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064af421 | 1 | /* |
39cc5c4a | 2 | * Copyright (c) 2009-2016 Nicira, Inc. |
43253595 | 3 | * Copyright (c) 2010 Jean Tourrilhes - HP-Labs. |
064af421 | 4 | * |
a14bc59f BP |
5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
6 | * you may not use this file except in compliance with the License. | |
7 | * You may obtain a copy of the License at: | |
064af421 | 8 | * |
a14bc59f BP |
9 | * http://www.apache.org/licenses/LICENSE-2.0 |
10 | * | |
11 | * Unless required by applicable law or agreed to in writing, software | |
12 | * distributed under the License is distributed on an "AS IS" BASIS, | |
13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
14 | * See the License for the specific language governing permissions and | |
15 | * limitations under the License. | |
064af421 BP |
16 | */ |
17 | ||
18 | #include <config.h> | |
064af421 BP |
19 | #include <errno.h> |
20 | #include <inttypes.h> | |
064af421 BP |
21 | #include <stdbool.h> |
22 | #include <stdlib.h> | |
448a4b2f | 23 | #include <unistd.h> |
b598f214 | 24 | |
52a90c29 | 25 | #include "bitmap.h" |
b598f214 | 26 | #include "bundles.h" |
10a24935 | 27 | #include "byte-order.h" |
064af421 | 28 | #include "classifier.h" |
da4a6191 | 29 | #include "connectivity.h" |
19a87e36 | 30 | #include "connmgr.h" |
064af421 | 31 | #include "coverage.h" |
b598f214 | 32 | #include "dp-packet.h" |
ca0f572c | 33 | #include "hash.h" |
ee89ea7b | 34 | #include "openvswitch/hmap.h" |
064af421 | 35 | #include "netdev.h" |
09246b99 | 36 | #include "nx-match.h" |
b598f214 | 37 | #include "ofproto.h" |
5bee6e26 | 38 | #include "ofproto-provider.h" |
064af421 BP |
39 | #include "openflow/nicira-ext.h" |
40 | #include "openflow/openflow.h" | |
d271907f BW |
41 | #include "openvswitch/dynamic-string.h" |
42 | #include "openvswitch/meta-flow.h" | |
b598f214 | 43 | #include "openvswitch/ofp-actions.h" |
d271907f BW |
44 | #include "openvswitch/ofp-errors.h" |
45 | #include "openvswitch/ofp-msgs.h" | |
25d436fb | 46 | #include "openvswitch/ofp-print.h" |
d271907f BW |
47 | #include "openvswitch/ofp-util.h" |
48 | #include "openvswitch/ofpbuf.h" | |
49 | #include "openvswitch/vlog.h" | |
06a0f3e2 | 50 | #include "ovs-rcu.h" |
064af421 BP |
51 | #include "packets.h" |
52 | #include "pinsched.h" | |
53 | #include "pktbuf.h" | |
54 | #include "poll-loop.h" | |
254750ce | 55 | #include "random.h" |
da4a6191 | 56 | #include "seq.h" |
ee89ea7b | 57 | #include "openvswitch/shash.h" |
0d085684 | 58 | #include "simap.h" |
e8f9a7bb | 59 | #include "smap.h" |
b3c01ed3 | 60 | #include "sset.h" |
064af421 | 61 | #include "timeval.h" |
9558d2a5 | 62 | #include "tun-metadata.h" |
c4617b3c | 63 | #include "unaligned.h" |
4f2cad2c | 64 | #include "unixctl.h" |
ee89ea7b | 65 | #include "util.h" |
064af421 | 66 | |
d98e6007 | 67 | VLOG_DEFINE_THIS_MODULE(ofproto); |
064af421 | 68 | |
d76f09ea | 69 | COVERAGE_DEFINE(ofproto_flush); |
d76f09ea BP |
70 | COVERAGE_DEFINE(ofproto_packet_out); |
71 | COVERAGE_DEFINE(ofproto_queue_req); | |
72 | COVERAGE_DEFINE(ofproto_recv_openflow); | |
73 | COVERAGE_DEFINE(ofproto_reinit_ports); | |
d76f09ea BP |
74 | COVERAGE_DEFINE(ofproto_update_port); |
75 | ||
f017d986 JR |
76 | /* Default fields to use for prefix tries in each flow table, unless something |
77 | * else is configured. */ | |
78 | const enum mf_field_id default_prefix_fields[2] = | |
79 | { MFF_IPV4_DST, MFF_IPV4_SRC }; | |
80 | ||
d0918789 BP |
81 | /* oftable. */ |
82 | static void oftable_init(struct oftable *); | |
83 | static void oftable_destroy(struct oftable *); | |
878ae780 | 84 | |
254750ce BP |
85 | static void oftable_set_name(struct oftable *, const char *name); |
86 | ||
6787a49f | 87 | static enum ofperr evict_rules_from_table(struct oftable *) |
834fe5cb | 88 | OVS_REQUIRES(ofproto_mutex); |
82c22d34 BP |
89 | static void oftable_configure_eviction(struct oftable *, |
90 | unsigned int eviction, | |
91 | const struct mf_subfield *fields, | |
92 | size_t n_fields) | |
7394b8fb | 93 | OVS_REQUIRES(ofproto_mutex); |
254750ce | 94 | |
82c22d34 BP |
95 | /* This is the only combination of OpenFlow eviction flags that OVS supports: a |
96 | * combination of OF1.4+ importance, the remaining lifetime of the flow, and | |
97 | * fairness based on user-specified fields. */ | |
98 | #define OFPROTO_EVICTION_FLAGS \ | |
99 | (OFPTMPEF14_OTHER | OFPTMPEF14_IMPORTANCE | OFPTMPEF14_LIFETIME) | |
100 | ||
254750ce BP |
101 | /* A set of rules within a single OpenFlow table (oftable) that have the same |
102 | * values for the oftable's eviction_fields. A rule to be evicted, when one is | |
103 | * needed, is taken from the eviction group that contains the greatest number | |
104 | * of rules. | |
105 | * | |
106 | * An oftable owns any number of eviction groups, each of which contains any | |
107 | * number of rules. | |
108 | * | |
109 | * Membership in an eviction group is imprecise, based on the hash of the | |
110 | * oftable's eviction_fields (in the eviction_group's id_node.hash member). | |
111 | * That is, if two rules have different eviction_fields, but those | |
112 | * eviction_fields hash to the same value, then they will belong to the same | |
113 | * eviction_group anyway. | |
114 | * | |
115 | * (When eviction is not enabled on an oftable, we don't track any eviction | |
116 | * groups, to save time and space.) */ | |
117 | struct eviction_group { | |
118 | struct hmap_node id_node; /* In oftable's "eviction_groups_by_id". */ | |
119 | struct heap_node size_node; /* In oftable's "eviction_groups_by_size". */ | |
120 | struct heap rules; /* Contains "struct rule"s. */ | |
121 | }; | |
122 | ||
3d900aa7 BP |
123 | static bool choose_rule_to_evict(struct oftable *table, struct rule **rulep) |
124 | OVS_REQUIRES(ofproto_mutex); | |
f70b94de BP |
125 | static uint64_t rule_eviction_priority(struct ofproto *ofproto, struct rule *) |
126 | OVS_REQUIRES(ofproto_mutex); | |
3d900aa7 BP |
127 | static void eviction_group_add_rule(struct rule *) |
128 | OVS_REQUIRES(ofproto_mutex); | |
129 | static void eviction_group_remove_rule(struct rule *) | |
130 | OVS_REQUIRES(ofproto_mutex); | |
f29152ca | 131 | |
a9b22b7f BP |
132 | /* Criteria that flow_mod and other operations use for selecting rules on |
133 | * which to operate. */ | |
134 | struct rule_criteria { | |
135 | /* An OpenFlow table or 255 for all tables. */ | |
136 | uint8_t table_id; | |
137 | ||
138 | /* OpenFlow matching criteria. Interpreted different in "loose" way by | |
139 | * collect_rules_loose() and "strict" way by collect_rules_strict(), as | |
140 | * defined in the OpenFlow spec. */ | |
141 | struct cls_rule cr; | |
44e0c35d | 142 | ovs_version_t version; |
a9b22b7f BP |
143 | |
144 | /* Matching criteria for the OpenFlow cookie. Consider a bit B in a rule's | |
145 | * cookie and the corresponding bits C in 'cookie' and M in 'cookie_mask'. | |
146 | * The rule will not be selected if M is 1 and B != C. */ | |
147 | ovs_be64 cookie; | |
148 | ovs_be64 cookie_mask; | |
149 | ||
150 | /* Selection based on actions within a rule: | |
151 | * | |
152 | * If out_port != OFPP_ANY, selects only rules that output to out_port. | |
153 | * If out_group != OFPG_ALL, select only rules that output to out_group. */ | |
154 | ofp_port_t out_port; | |
155 | uint32_t out_group; | |
dd51dae2 BP |
156 | |
157 | /* If true, collects only rules that are modifiable. */ | |
158 | bool include_hidden; | |
159 | bool include_readonly; | |
a9b22b7f BP |
160 | }; |
161 | ||
162 | static void rule_criteria_init(struct rule_criteria *, uint8_t table_id, | |
eb391b76 | 163 | const struct match *match, int priority, |
44e0c35d | 164 | ovs_version_t version, |
a9b22b7f BP |
165 | ovs_be64 cookie, ovs_be64 cookie_mask, |
166 | ofp_port_t out_port, uint32_t out_group); | |
dd51dae2 BP |
167 | static void rule_criteria_require_rw(struct rule_criteria *, |
168 | bool can_write_readonly); | |
a9b22b7f BP |
169 | static void rule_criteria_destroy(struct rule_criteria *); |
170 | ||
35f48b8b BP |
171 | static enum ofperr collect_rules_loose(struct ofproto *, |
172 | const struct rule_criteria *, | |
173 | struct rule_collection *); | |
174 | ||
15aaf599 BP |
175 | /* A packet that needs to be passed to rule_execute(). |
176 | * | |
177 | * (We can't do this immediately from ofopgroup_complete() because that holds | |
178 | * ofproto_mutex, which rule_execute() needs released.) */ | |
35412852 | 179 | struct rule_execute { |
ca6ba700 | 180 | struct ovs_list list_node; /* In struct ofproto's "rule_executes" list. */ |
35412852 BP |
181 | struct rule *rule; /* Owns a reference to the rule. */ |
182 | ofp_port_t in_port; | |
cf62fa4c | 183 | struct dp_packet *packet; /* Owns the packet. */ |
35412852 BP |
184 | }; |
185 | ||
15aaf599 | 186 | static void run_rule_executes(struct ofproto *) OVS_EXCLUDED(ofproto_mutex); |
35412852 BP |
187 | static void destroy_rule_executes(struct ofproto *); |
188 | ||
35f48b8b BP |
189 | struct learned_cookie { |
190 | union { | |
191 | /* In struct ofproto's 'learned_cookies' hmap. */ | |
192 | struct hmap_node hmap_node OVS_GUARDED_BY(ofproto_mutex); | |
193 | ||
194 | /* In 'dead_cookies' list when removed from hmap. */ | |
ca6ba700 | 195 | struct ovs_list list_node; |
35f48b8b BP |
196 | } u; |
197 | ||
198 | /* Key. */ | |
199 | ovs_be64 cookie OVS_GUARDED_BY(ofproto_mutex); | |
200 | uint8_t table_id OVS_GUARDED_BY(ofproto_mutex); | |
201 | ||
202 | /* Number of references from "learn" actions. | |
203 | * | |
204 | * When this drops to 0, all of the flows in 'table_id' with the specified | |
205 | * 'cookie' are deleted. */ | |
206 | int n OVS_GUARDED_BY(ofproto_mutex); | |
207 | }; | |
208 | ||
209 | static const struct ofpact_learn *next_learn_with_delete( | |
210 | const struct rule_actions *, const struct ofpact_learn *start); | |
211 | ||
212 | static void learned_cookies_inc(struct ofproto *, const struct rule_actions *) | |
213 | OVS_REQUIRES(ofproto_mutex); | |
214 | static void learned_cookies_dec(struct ofproto *, const struct rule_actions *, | |
ca6ba700 | 215 | struct ovs_list *dead_cookies) |
35f48b8b | 216 | OVS_REQUIRES(ofproto_mutex); |
ca6ba700 | 217 | static void learned_cookies_flush(struct ofproto *, struct ovs_list *dead_cookies) |
35f48b8b BP |
218 | OVS_REQUIRES(ofproto_mutex); |
219 | ||
d0918789 | 220 | /* ofport. */ |
15aaf599 | 221 | static void ofport_destroy__(struct ofport *) OVS_EXCLUDED(ofproto_mutex); |
9aad5a5a | 222 | static void ofport_destroy(struct ofport *, bool del); |
0670b5d0 | 223 | static inline bool ofport_is_internal(const struct ofport *); |
d0918789 | 224 | |
01c77073 | 225 | static int update_port(struct ofproto *, const char *devname); |
d0918789 BP |
226 | static int init_ports(struct ofproto *); |
227 | static void reinit_ports(struct ofproto *); | |
7ee20df1 | 228 | |
fdcea803 GS |
229 | static long long int ofport_get_usage(const struct ofproto *, |
230 | ofp_port_t ofp_port); | |
231 | static void ofport_set_usage(struct ofproto *, ofp_port_t ofp_port, | |
232 | long long int last_used); | |
865b26a4 | 233 | static void ofport_remove_usage(struct ofproto *, ofp_port_t ofp_port); |
fdcea803 GS |
234 | |
235 | /* Ofport usage. | |
236 | * | |
237 | * Keeps track of the currently used and recently used ofport values and is | |
238 | * used to prevent immediate recycling of ofport values. */ | |
239 | struct ofport_usage { | |
240 | struct hmap_node hmap_node; /* In struct ofproto's "ofport_usage" hmap. */ | |
241 | ofp_port_t ofp_port; /* OpenFlow port number. */ | |
242 | long long int last_used; /* Last time the 'ofp_port' was used. LLONG_MAX | |
243 | represents in-use ofports. */ | |
244 | }; | |
245 | ||
254750ce | 246 | /* rule. */ |
f695ebfa JR |
247 | static void ofproto_rule_send_removed(struct rule *) |
248 | OVS_EXCLUDED(ofproto_mutex); | |
834fe5cb | 249 | static bool rule_is_readonly(const struct rule *); |
bc5e6a91 JR |
250 | static void ofproto_rule_insert__(struct ofproto *, struct rule *) |
251 | OVS_REQUIRES(ofproto_mutex); | |
802f84ff JR |
252 | static void ofproto_rule_remove__(struct ofproto *, struct rule *) |
253 | OVS_REQUIRES(ofproto_mutex); | |
254750ce | 254 | |
0a0d9385 | 255 | /* The source of an OpenFlow request. |
baae3d02 | 256 | * |
0a0d9385 JR |
257 | * A table modification request can be generated externally, via OpenFlow, or |
258 | * internally through a function call. This structure indicates the source of | |
259 | * an OpenFlow-generated table modification. For an internal flow_mod, it | |
260 | * isn't meaningful and thus supplied as NULL. */ | |
261 | struct openflow_mod_requester { | |
baae3d02 | 262 | struct ofconn *ofconn; /* Connection on which flow_mod arrived. */ |
c84d8691 | 263 | const struct ofp_header *request; |
baae3d02 BP |
264 | }; |
265 | ||
d0918789 | 266 | /* OpenFlow. */ |
39c94593 | 267 | static enum ofperr replace_rule_create(struct ofproto *, |
dd27be82 | 268 | struct ofputil_flow_mod *, |
39c94593 JR |
269 | struct cls_rule *cr, uint8_t table_id, |
270 | struct rule *old_rule, | |
271 | struct rule **new_rule) | |
272 | OVS_REQUIRES(ofproto_mutex); | |
273 | ||
44e0c35d | 274 | static void replace_rule_start(struct ofproto *, ovs_version_t version, |
8be00367 | 275 | struct rule *old_rule, struct rule *new_rule, |
39c94593 | 276 | struct cls_conjunction *, size_t n_conjs) |
dd27be82 | 277 | OVS_REQUIRES(ofproto_mutex); |
39c94593 | 278 | |
6787a49f JR |
279 | static void replace_rule_revert(struct ofproto *, struct rule *old_rule, |
280 | struct rule *new_rule) | |
39c94593 JR |
281 | OVS_REQUIRES(ofproto_mutex); |
282 | ||
283 | static void replace_rule_finish(struct ofproto *, struct ofputil_flow_mod *, | |
0a0d9385 | 284 | const struct openflow_mod_requester *, |
39c94593 JR |
285 | struct rule *old_rule, struct rule *new_rule, |
286 | struct ovs_list *dead_cookies) | |
dd27be82 | 287 | OVS_REQUIRES(ofproto_mutex); |
39c94593 | 288 | static void delete_flows__(struct rule_collection *, |
9ca4a86f | 289 | enum ofp_flow_removed_reason, |
0a0d9385 | 290 | const struct openflow_mod_requester *) |
15aaf599 | 291 | OVS_REQUIRES(ofproto_mutex); |
834fe5cb | 292 | |
0a0d9385 | 293 | static void send_buffered_packet(const struct openflow_mod_requester *, |
c84d8691 | 294 | uint32_t buffer_id, struct rule *) |
834fe5cb BP |
295 | OVS_REQUIRES(ofproto_mutex); |
296 | ||
db88b35c | 297 | static bool ofproto_group_exists(const struct ofproto *, uint32_t group_id); |
b20f4073 | 298 | static void handle_openflow(struct ofconn *, const struct ofpbuf *); |
8be00367 JR |
299 | static enum ofperr ofproto_flow_mod_start(struct ofproto *, |
300 | struct ofproto_flow_mod *) | |
1f42be1c | 301 | OVS_REQUIRES(ofproto_mutex); |
8be00367 JR |
302 | static void ofproto_flow_mod_finish(struct ofproto *, |
303 | struct ofproto_flow_mod *, | |
0a0d9385 | 304 | const struct openflow_mod_requester *) |
1f42be1c | 305 | OVS_REQUIRES(ofproto_mutex); |
baae3d02 | 306 | static enum ofperr handle_flow_mod__(struct ofproto *, |
8be00367 | 307 | struct ofproto_flow_mod *, |
0a0d9385 | 308 | const struct openflow_mod_requester *) |
15aaf599 | 309 | OVS_EXCLUDED(ofproto_mutex); |
65e0be10 BP |
310 | static void calc_duration(long long int start, long long int now, |
311 | uint32_t *sec, uint32_t *nsec); | |
f29152ca | 312 | |
d0918789 BP |
313 | /* ofproto. */ |
314 | static uint64_t pick_datapath_id(const struct ofproto *); | |
315 | static uint64_t pick_fallback_dpid(void); | |
316 | static void ofproto_destroy__(struct ofproto *); | |
ada3428f | 317 | static void update_mtu(struct ofproto *, struct ofport *); |
0670b5d0 | 318 | static void update_mtu_ofproto(struct ofproto *); |
6b3f7f02 | 319 | static void meter_delete(struct ofproto *, uint32_t first, uint32_t last); |
062fea06 | 320 | static void meter_insert_rule(struct rule *); |
f29152ca | 321 | |
d0918789 | 322 | /* unixctl. */ |
abe529af | 323 | static void ofproto_unixctl_init(void); |
f29152ca | 324 | |
abe529af BP |
325 | /* All registered ofproto classes, in probe order. */ |
326 | static const struct ofproto_class **ofproto_classes; | |
327 | static size_t n_ofproto_classes; | |
328 | static size_t allocated_ofproto_classes; | |
7aa697dd | 329 | |
15aaf599 BP |
330 | /* Global lock that protects all flow table operations. */ |
331 | struct ovs_mutex ofproto_mutex = OVS_MUTEX_INITIALIZER; | |
abe7b10f | 332 | |
e79a6c83 | 333 | unsigned ofproto_flow_limit = OFPROTO_FLOW_LIMIT_DEFAULT; |
72310b04 | 334 | unsigned ofproto_max_idle = OFPROTO_MAX_IDLE_DEFAULT; |
380f49c4 | 335 | |
e79a6c83 | 336 | size_t n_handlers, n_revalidators; |
f2eee189 | 337 | char *pmd_cpu_mask; |
6567010f | 338 | |
f797957a | 339 | /* Map from datapath name to struct ofproto, for use by unixctl commands. */ |
abe529af | 340 | static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos); |
ebe482fd | 341 | |
e1b1d06a JP |
342 | /* Initial mappings of port to OpenFlow number mappings. */ |
343 | static struct shash init_ofp_ports = SHASH_INITIALIZER(&init_ofp_ports); | |
344 | ||
abe529af | 345 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
f29152ca | 346 | |
40358701 GS |
347 | /* The default value of true waits for flow restore. */ |
348 | static bool flow_restore_wait = true; | |
349 | ||
b0408fca JP |
350 | /* Must be called to initialize the ofproto library. |
351 | * | |
352 | * The caller may pass in 'iface_hints', which contains an shash of | |
353 | * "iface_hint" elements indexed by the interface's name. The provider | |
354 | * may use these hints to describe the startup configuration in order to | |
355 | * reinitialize its state. The caller owns the provided data, so a | |
356 | * provider will make copies of anything required. An ofproto provider | |
357 | * will remove any existing state that is not described by the hint, and | |
358 | * may choose to remove it all. */ | |
359 | void | |
360 | ofproto_init(const struct shash *iface_hints) | |
abe529af | 361 | { |
e1b1d06a | 362 | struct shash_node *node; |
b0408fca | 363 | size_t i; |
f29152ca | 364 | |
b0408fca JP |
365 | ofproto_class_register(&ofproto_dpif_class); |
366 | ||
e1b1d06a JP |
367 | /* Make a local copy, since we don't own 'iface_hints' elements. */ |
368 | SHASH_FOR_EACH(node, iface_hints) { | |
369 | const struct iface_hint *orig_hint = node->data; | |
370 | struct iface_hint *new_hint = xmalloc(sizeof *new_hint); | |
371 | const char *br_type = ofproto_normalize_type(orig_hint->br_type); | |
372 | ||
373 | new_hint->br_name = xstrdup(orig_hint->br_name); | |
374 | new_hint->br_type = xstrdup(br_type); | |
375 | new_hint->ofp_port = orig_hint->ofp_port; | |
376 | ||
377 | shash_add(&init_ofp_ports, node->name, new_hint); | |
378 | } | |
379 | ||
b0408fca | 380 | for (i = 0; i < n_ofproto_classes; i++) { |
e1b1d06a | 381 | ofproto_classes[i]->init(&init_ofp_ports); |
abe529af | 382 | } |
0fc1f5c0 HH |
383 | |
384 | ofproto_unixctl_init(); | |
abe529af | 385 | } |
f29152ca | 386 | |
abe529af BP |
387 | /* 'type' should be a normalized datapath type, as returned by |
388 | * ofproto_normalize_type(). Returns the corresponding ofproto_class | |
389 | * structure, or a null pointer if there is none registered for 'type'. */ | |
390 | static const struct ofproto_class * | |
391 | ofproto_class_find__(const char *type) | |
392 | { | |
393 | size_t i; | |
f29152ca | 394 | |
abe529af BP |
395 | for (i = 0; i < n_ofproto_classes; i++) { |
396 | const struct ofproto_class *class = ofproto_classes[i]; | |
397 | struct sset types; | |
398 | bool found; | |
064af421 | 399 | |
abe529af BP |
400 | sset_init(&types); |
401 | class->enumerate_types(&types); | |
402 | found = sset_contains(&types, type); | |
403 | sset_destroy(&types); | |
bcf84111 | 404 | |
abe529af BP |
405 | if (found) { |
406 | return class; | |
407 | } | |
408 | } | |
409 | VLOG_WARN("unknown datapath type %s", type); | |
410 | return NULL; | |
411 | } | |
064af421 | 412 | |
abe529af BP |
413 | /* Registers a new ofproto class. After successful registration, new ofprotos |
414 | * of that type can be created using ofproto_create(). */ | |
415 | int | |
416 | ofproto_class_register(const struct ofproto_class *new_class) | |
417 | { | |
418 | size_t i; | |
7aa697dd | 419 | |
abe529af BP |
420 | for (i = 0; i < n_ofproto_classes; i++) { |
421 | if (ofproto_classes[i] == new_class) { | |
422 | return EEXIST; | |
423 | } | |
424 | } | |
064af421 | 425 | |
abe529af BP |
426 | if (n_ofproto_classes >= allocated_ofproto_classes) { |
427 | ofproto_classes = x2nrealloc(ofproto_classes, | |
428 | &allocated_ofproto_classes, | |
429 | sizeof *ofproto_classes); | |
430 | } | |
431 | ofproto_classes[n_ofproto_classes++] = new_class; | |
432 | return 0; | |
433 | } | |
064af421 | 434 | |
abe529af BP |
435 | /* Unregisters a datapath provider. 'type' must have been previously |
436 | * registered and not currently be in use by any ofprotos. After | |
437 | * unregistration new datapaths of that type cannot be opened using | |
438 | * ofproto_create(). */ | |
439 | int | |
440 | ofproto_class_unregister(const struct ofproto_class *class) | |
441 | { | |
442 | size_t i; | |
76ce9432 | 443 | |
abe529af BP |
444 | for (i = 0; i < n_ofproto_classes; i++) { |
445 | if (ofproto_classes[i] == class) { | |
446 | for (i++; i < n_ofproto_classes; i++) { | |
447 | ofproto_classes[i - 1] = ofproto_classes[i]; | |
448 | } | |
449 | n_ofproto_classes--; | |
450 | return 0; | |
451 | } | |
452 | } | |
453 | VLOG_WARN("attempted to unregister an ofproto class that is not " | |
454 | "registered"); | |
455 | return EAFNOSUPPORT; | |
456 | } | |
4a4cdb3b | 457 | |
f79e673f BP |
458 | /* Clears 'types' and enumerates all registered ofproto types into it. The |
459 | * caller must first initialize the sset. */ | |
460 | void | |
461 | ofproto_enumerate_types(struct sset *types) | |
462 | { | |
abe529af | 463 | size_t i; |
064af421 | 464 | |
c799c306 | 465 | sset_clear(types); |
abe529af BP |
466 | for (i = 0; i < n_ofproto_classes; i++) { |
467 | ofproto_classes[i]->enumerate_types(types); | |
468 | } | |
f79e673f | 469 | } |
064af421 | 470 | |
f79e673f BP |
471 | /* Returns the fully spelled out name for the given ofproto 'type'. |
472 | * | |
473 | * Normalized type string can be compared with strcmp(). Unnormalized type | |
474 | * string might be the same even if they have different spellings. */ | |
475 | const char * | |
476 | ofproto_normalize_type(const char *type) | |
477 | { | |
abe529af | 478 | return type && type[0] ? type : "system"; |
f79e673f | 479 | } |
064af421 | 480 | |
f79e673f BP |
481 | /* Clears 'names' and enumerates the names of all known created ofprotos with |
482 | * the given 'type'. The caller must first initialize the sset. Returns 0 if | |
483 | * successful, otherwise a positive errno value. | |
484 | * | |
485 | * Some kinds of datapaths might not be practically enumerable. This is not | |
486 | * considered an error. */ | |
487 | int | |
488 | ofproto_enumerate_names(const char *type, struct sset *names) | |
489 | { | |
abe529af BP |
490 | const struct ofproto_class *class = ofproto_class_find__(type); |
491 | return class ? class->enumerate_names(type, names) : EAFNOSUPPORT; | |
239ad7d1 | 492 | } |
7aa697dd | 493 | |
39c94593 JR |
494 | static void |
495 | ofproto_bump_tables_version(struct ofproto *ofproto) | |
496 | { | |
497 | ++ofproto->tables_version; | |
498 | ofproto->ofproto_class->set_tables_version(ofproto, | |
499 | ofproto->tables_version); | |
500 | } | |
501 | ||
064af421 | 502 | int |
abe529af | 503 | ofproto_create(const char *datapath_name, const char *datapath_type, |
064af421 BP |
504 | struct ofproto **ofprotop) |
505 | { | |
abe529af BP |
506 | const struct ofproto_class *class; |
507 | struct ofproto *ofproto; | |
064af421 | 508 | int error; |
c2f0373a | 509 | int i; |
064af421 BP |
510 | |
511 | *ofprotop = NULL; | |
512 | ||
abe529af BP |
513 | datapath_type = ofproto_normalize_type(datapath_type); |
514 | class = ofproto_class_find__(datapath_type); | |
515 | if (!class) { | |
516 | VLOG_WARN("could not create datapath %s of unknown type %s", | |
517 | datapath_name, datapath_type); | |
518 | return EAFNOSUPPORT; | |
064af421 BP |
519 | } |
520 | ||
abe529af BP |
521 | ofproto = class->alloc(); |
522 | if (!ofproto) { | |
523 | VLOG_ERR("failed to allocate datapath %s of type %s", | |
524 | datapath_name, datapath_type); | |
525 | return ENOMEM; | |
526 | } | |
527 | ||
528 | /* Initialize. */ | |
abe7b10f | 529 | ovs_mutex_lock(&ofproto_mutex); |
abe529af BP |
530 | memset(ofproto, 0, sizeof *ofproto); |
531 | ofproto->ofproto_class = class; | |
532 | ofproto->name = xstrdup(datapath_name); | |
533 | ofproto->type = xstrdup(datapath_type); | |
534 | hmap_insert(&all_ofprotos, &ofproto->hmap_node, | |
535 | hash_string(ofproto->name, 0)); | |
536 | ofproto->datapath_id = 0; | |
8402c74b | 537 | ofproto->forward_bpdu = false; |
abe529af | 538 | ofproto->fallback_dpid = pick_fallback_dpid(); |
061bfea4 BP |
539 | ofproto->mfr_desc = NULL; |
540 | ofproto->hw_desc = NULL; | |
541 | ofproto->sw_desc = NULL; | |
542 | ofproto->serial_desc = NULL; | |
543 | ofproto->dp_desc = NULL; | |
ad99e2ed | 544 | ofproto->frag_handling = OFPUTIL_FRAG_NORMAL; |
abe529af | 545 | hmap_init(&ofproto->ports); |
fdcea803 | 546 | hmap_init(&ofproto->ofport_usage); |
abe529af | 547 | shash_init(&ofproto->port_by_name); |
e1b1d06a | 548 | simap_init(&ofproto->ofp_requests); |
430dbb14 | 549 | ofproto->max_ports = ofp_to_u16(OFPP_MAX); |
448c2fa8 | 550 | ofproto->eviction_group_timer = LLONG_MIN; |
6c1491fb BP |
551 | ofproto->tables = NULL; |
552 | ofproto->n_tables = 0; | |
44e0c35d | 553 | ofproto->tables_version = OVS_VERSION_MIN; |
98eaac36 | 554 | hindex_init(&ofproto->cookies); |
35f48b8b | 555 | hmap_init(&ofproto->learned_cookies); |
417e7e66 | 556 | ovs_list_init(&ofproto->expirable); |
abe529af | 557 | ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name); |
35412852 | 558 | guarded_list_init(&ofproto->rule_executes); |
ada3428f | 559 | ofproto->min_mtu = INT_MAX; |
db88b35c | 560 | cmap_init(&ofproto->groups); |
abe7b10f | 561 | ovs_mutex_unlock(&ofproto_mutex); |
0ae01c64 | 562 | ofproto->ogf.types = 0xf; |
7cb279c2 SH |
563 | ofproto->ogf.capabilities = OFPGFC_CHAINING | OFPGFC_SELECT_LIVENESS | |
564 | OFPGFC_SELECT_WEIGHT; | |
08d1e234 BP |
565 | for (i = 0; i < 4; i++) { |
566 | ofproto->ogf.max_groups[i] = OFPG_MAX; | |
567 | ofproto->ogf.ofpacts[i] = (UINT64_C(1) << N_OFPACTS) - 1; | |
568 | } | |
9558d2a5 | 569 | tun_metadata_init(); |
abe529af | 570 | |
0f5f95a9 | 571 | error = ofproto->ofproto_class->construct(ofproto); |
19a87e36 | 572 | if (error) { |
abe529af | 573 | VLOG_ERR("failed to open datapath %s: %s", |
10a89ef0 | 574 | datapath_name, ovs_strerror(error)); |
58f19539 | 575 | connmgr_destroy(ofproto->connmgr); |
abe529af | 576 | ofproto_destroy__(ofproto); |
19a87e36 BP |
577 | return error; |
578 | } | |
073e2a6f | 579 | |
c2f0373a | 580 | /* Check that hidden tables, if any, are at the end. */ |
cb22974d | 581 | ovs_assert(ofproto->n_tables); |
c2f0373a BP |
582 | for (i = 0; i + 1 < ofproto->n_tables; i++) { |
583 | enum oftable_flags flags = ofproto->tables[i].flags; | |
584 | enum oftable_flags next_flags = ofproto->tables[i + 1].flags; | |
585 | ||
cb22974d | 586 | ovs_assert(!(flags & OFTABLE_HIDDEN) || next_flags & OFTABLE_HIDDEN); |
c2f0373a | 587 | } |
19a87e36 | 588 | |
abe529af | 589 | ofproto->datapath_id = pick_datapath_id(ofproto); |
abe529af | 590 | init_ports(ofproto); |
7aa697dd | 591 | |
9cae45dc JR |
592 | /* Initialize meters table. */ |
593 | if (ofproto->ofproto_class->meter_get_features) { | |
594 | ofproto->ofproto_class->meter_get_features(ofproto, | |
595 | &ofproto->meter_features); | |
596 | } else { | |
597 | memset(&ofproto->meter_features, 0, sizeof ofproto->meter_features); | |
598 | } | |
599 | ofproto->meters = xzalloc((ofproto->meter_features.max_meters + 1) | |
600 | * sizeof(struct meter *)); | |
601 | ||
621b8064 | 602 | /* Set the initial tables version. */ |
39c94593 | 603 | ofproto_bump_tables_version(ofproto); |
621b8064 | 604 | |
abe529af | 605 | *ofprotop = ofproto; |
064af421 BP |
606 | return 0; |
607 | } | |
608 | ||
91858960 BP |
609 | /* Must be called (only) by an ofproto implementation in its constructor |
610 | * function. See the large comment on 'construct' in struct ofproto_class for | |
611 | * details. */ | |
0f5f95a9 BP |
612 | void |
613 | ofproto_init_tables(struct ofproto *ofproto, int n_tables) | |
614 | { | |
615 | struct oftable *table; | |
616 | ||
cb22974d BP |
617 | ovs_assert(!ofproto->n_tables); |
618 | ovs_assert(n_tables >= 1 && n_tables <= 255); | |
0f5f95a9 BP |
619 | |
620 | ofproto->n_tables = n_tables; | |
621 | ofproto->tables = xmalloc(n_tables * sizeof *ofproto->tables); | |
622 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
623 | oftable_init(table); | |
624 | } | |
625 | } | |
626 | ||
91858960 BP |
627 | /* To be optionally called (only) by an ofproto implementation in its |
628 | * constructor function. See the large comment on 'construct' in struct | |
629 | * ofproto_class for details. | |
630 | * | |
631 | * Sets the maximum number of ports to 'max_ports'. The ofproto generic layer | |
632 | * will then ensure that actions passed into the ofproto implementation will | |
633 | * not refer to OpenFlow ports numbered 'max_ports' or higher. If this | |
634 | * function is not called, there will be no such restriction. | |
635 | * | |
636 | * Reserved ports numbered OFPP_MAX and higher are special and not subject to | |
637 | * the 'max_ports' restriction. */ | |
638 | void | |
430dbb14 | 639 | ofproto_init_max_ports(struct ofproto *ofproto, uint16_t max_ports) |
91858960 | 640 | { |
430dbb14 | 641 | ovs_assert(max_ports <= ofp_to_u16(OFPP_MAX)); |
91858960 BP |
642 | ofproto->max_ports = max_ports; |
643 | } | |
644 | ||
e825ace2 BP |
645 | uint64_t |
646 | ofproto_get_datapath_id(const struct ofproto *ofproto) | |
647 | { | |
648 | return ofproto->datapath_id; | |
649 | } | |
650 | ||
064af421 BP |
651 | void |
652 | ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id) | |
653 | { | |
654 | uint64_t old_dpid = p->datapath_id; | |
fa60c019 | 655 | p->datapath_id = datapath_id ? datapath_id : pick_datapath_id(p); |
064af421 | 656 | if (p->datapath_id != old_dpid) { |
76ce9432 BP |
657 | /* Force all active connections to reconnect, since there is no way to |
658 | * notify a controller that the datapath ID has changed. */ | |
fa05809b | 659 | ofproto_reconnect_controllers(p); |
064af421 BP |
660 | } |
661 | } | |
662 | ||
76ce9432 BP |
663 | void |
664 | ofproto_set_controllers(struct ofproto *p, | |
665 | const struct ofproto_controller *controllers, | |
1d9ffc17 | 666 | size_t n_controllers, uint32_t allowed_versions) |
76ce9432 | 667 | { |
1d9ffc17 SH |
668 | connmgr_set_controllers(p->connmgr, controllers, n_controllers, |
669 | allowed_versions); | |
064af421 BP |
670 | } |
671 | ||
31681a5d JP |
672 | void |
673 | ofproto_set_fail_mode(struct ofproto *p, enum ofproto_fail_mode fail_mode) | |
674 | { | |
19a87e36 | 675 | connmgr_set_fail_mode(p->connmgr, fail_mode); |
31681a5d JP |
676 | } |
677 | ||
fa05809b BP |
678 | /* Drops the connections between 'ofproto' and all of its controllers, forcing |
679 | * them to reconnect. */ | |
680 | void | |
681 | ofproto_reconnect_controllers(struct ofproto *ofproto) | |
682 | { | |
19a87e36 | 683 | connmgr_reconnect(ofproto->connmgr); |
917e50e1 BP |
684 | } |
685 | ||
686 | /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s | |
687 | * in-band control should guarantee access, in the same way that in-band | |
688 | * control guarantees access to OpenFlow controllers. */ | |
689 | void | |
690 | ofproto_set_extra_in_band_remotes(struct ofproto *ofproto, | |
691 | const struct sockaddr_in *extras, size_t n) | |
692 | { | |
19a87e36 | 693 | connmgr_set_extra_in_band_remotes(ofproto->connmgr, extras, n); |
917e50e1 BP |
694 | } |
695 | ||
b1da6250 BP |
696 | /* Sets the OpenFlow queue used by flows set up by in-band control on |
697 | * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control | |
698 | * flows will use the default queue. */ | |
699 | void | |
700 | ofproto_set_in_band_queue(struct ofproto *ofproto, int queue_id) | |
701 | { | |
19a87e36 | 702 | connmgr_set_in_band_queue(ofproto->connmgr, queue_id); |
b1da6250 BP |
703 | } |
704 | ||
084f5290 SH |
705 | /* Sets the number of flows at which eviction from the kernel flow table |
706 | * will occur. */ | |
707 | void | |
e79a6c83 | 708 | ofproto_set_flow_limit(unsigned limit) |
084f5290 | 709 | { |
e79a6c83 | 710 | ofproto_flow_limit = limit; |
084f5290 SH |
711 | } |
712 | ||
72310b04 JS |
713 | /* Sets the maximum idle time for flows in the datapath before they are |
714 | * expired. */ | |
715 | void | |
716 | ofproto_set_max_idle(unsigned max_idle) | |
717 | { | |
718 | ofproto_max_idle = max_idle; | |
719 | } | |
720 | ||
b53055f4 | 721 | /* If forward_bpdu is true, the NORMAL action will forward frames with |
8402c74b SS |
722 | * reserved (e.g. STP) destination Ethernet addresses. if forward_bpdu is false, |
723 | * the NORMAL action will drop these frames. */ | |
724 | void | |
725 | ofproto_set_forward_bpdu(struct ofproto *ofproto, bool forward_bpdu) | |
726 | { | |
727 | bool old_val = ofproto->forward_bpdu; | |
728 | ofproto->forward_bpdu = forward_bpdu; | |
729 | if (old_val != ofproto->forward_bpdu) { | |
730 | if (ofproto->ofproto_class->forward_bpdu_changed) { | |
731 | ofproto->ofproto_class->forward_bpdu_changed(ofproto); | |
732 | } | |
b53055f4 | 733 | } |
8402c74b SS |
734 | } |
735 | ||
e764773c | 736 | /* Sets the MAC aging timeout for the OFPP_NORMAL action on 'ofproto' to |
c4069512 BP |
737 | * 'idle_time', in seconds, and the maximum number of MAC table entries to |
738 | * 'max_entries'. */ | |
e764773c | 739 | void |
c4069512 BP |
740 | ofproto_set_mac_table_config(struct ofproto *ofproto, unsigned idle_time, |
741 | size_t max_entries) | |
e764773c | 742 | { |
c4069512 BP |
743 | if (ofproto->ofproto_class->set_mac_table_config) { |
744 | ofproto->ofproto_class->set_mac_table_config(ofproto, idle_time, | |
745 | max_entries); | |
e764773c BP |
746 | } |
747 | } | |
748 | ||
7c38d0a5 FL |
749 | /* Multicast snooping configuration. */ |
750 | ||
751 | /* Configures multicast snooping on 'ofproto' using the settings | |
752 | * defined in 's'. If 's' is NULL, disables multicast snooping. | |
753 | * | |
754 | * Returns 0 if successful, otherwise a positive errno value. */ | |
755 | int | |
756 | ofproto_set_mcast_snooping(struct ofproto *ofproto, | |
757 | const struct ofproto_mcast_snooping_settings *s) | |
758 | { | |
759 | return (ofproto->ofproto_class->set_mcast_snooping | |
760 | ? ofproto->ofproto_class->set_mcast_snooping(ofproto, s) | |
761 | : EOPNOTSUPP); | |
762 | } | |
763 | ||
8e04a33f | 764 | /* Configures multicast snooping flood settings on 'ofp_port' of 'ofproto'. |
7c38d0a5 FL |
765 | * |
766 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
767 | int | |
8e04a33f FL |
768 | ofproto_port_set_mcast_snooping(struct ofproto *ofproto, void *aux, |
769 | const struct ofproto_mcast_snooping_port_settings *s) | |
7c38d0a5 FL |
770 | { |
771 | return (ofproto->ofproto_class->set_mcast_snooping_port | |
8e04a33f | 772 | ? ofproto->ofproto_class->set_mcast_snooping_port(ofproto, aux, s) |
7c38d0a5 FL |
773 | : EOPNOTSUPP); |
774 | } | |
775 | ||
f2eee189 AW |
776 | void |
777 | ofproto_set_cpu_mask(const char *cmask) | |
778 | { | |
779 | free(pmd_cpu_mask); | |
2225c0b9 | 780 | pmd_cpu_mask = nullable_xstrdup(cmask); |
f2eee189 AW |
781 | } |
782 | ||
448a4b2f | 783 | void |
30ea0da7 | 784 | ofproto_set_threads(int n_handlers_, int n_revalidators_) |
448a4b2f | 785 | { |
e79a6c83 EJ |
786 | int threads = MAX(count_cpu_cores(), 2); |
787 | ||
30ea0da7 GS |
788 | n_revalidators = MAX(n_revalidators_, 0); |
789 | n_handlers = MAX(n_handlers_, 0); | |
e79a6c83 EJ |
790 | |
791 | if (!n_revalidators) { | |
792 | n_revalidators = n_handlers | |
793 | ? MAX(threads - (int) n_handlers, 1) | |
794 | : threads / 4 + 1; | |
795 | } | |
796 | ||
797 | if (!n_handlers) { | |
798 | n_handlers = MAX(threads - (int) n_revalidators, 1); | |
799 | } | |
448a4b2f AW |
800 | } |
801 | ||
8b6ff729 BP |
802 | void |
803 | ofproto_set_dp_desc(struct ofproto *p, const char *dp_desc) | |
804 | { | |
805 | free(p->dp_desc); | |
2225c0b9 | 806 | p->dp_desc = nullable_xstrdup(dp_desc); |
8b6ff729 BP |
807 | } |
808 | ||
064af421 | 809 | int |
81e2083f | 810 | ofproto_set_snoops(struct ofproto *ofproto, const struct sset *snoops) |
064af421 | 811 | { |
19a87e36 | 812 | return connmgr_set_snoops(ofproto->connmgr, snoops); |
064af421 BP |
813 | } |
814 | ||
815 | int | |
0193b2af JG |
816 | ofproto_set_netflow(struct ofproto *ofproto, |
817 | const struct netflow_options *nf_options) | |
064af421 | 818 | { |
abe529af BP |
819 | if (nf_options && sset_is_empty(&nf_options->collectors)) { |
820 | nf_options = NULL; | |
821 | } | |
822 | ||
823 | if (ofproto->ofproto_class->set_netflow) { | |
824 | return ofproto->ofproto_class->set_netflow(ofproto, nf_options); | |
064af421 | 825 | } else { |
abe529af | 826 | return nf_options ? EOPNOTSUPP : 0; |
064af421 BP |
827 | } |
828 | } | |
829 | ||
abe529af | 830 | int |
72b06300 BP |
831 | ofproto_set_sflow(struct ofproto *ofproto, |
832 | const struct ofproto_sflow_options *oso) | |
833 | { | |
abe529af BP |
834 | if (oso && sset_is_empty(&oso->targets)) { |
835 | oso = NULL; | |
836 | } | |
72b06300 | 837 | |
abe529af BP |
838 | if (ofproto->ofproto_class->set_sflow) { |
839 | return ofproto->ofproto_class->set_sflow(ofproto, oso); | |
72b06300 | 840 | } else { |
abe529af | 841 | return oso ? EOPNOTSUPP : 0; |
72b06300 BP |
842 | } |
843 | } | |
29089a54 RL |
844 | |
845 | int | |
846 | ofproto_set_ipfix(struct ofproto *ofproto, | |
847 | const struct ofproto_ipfix_bridge_exporter_options *bo, | |
848 | const struct ofproto_ipfix_flow_exporter_options *fo, | |
849 | size_t n_fo) | |
850 | { | |
851 | if (ofproto->ofproto_class->set_ipfix) { | |
852 | return ofproto->ofproto_class->set_ipfix(ofproto, bo, fo, n_fo); | |
853 | } else { | |
854 | return (bo || fo) ? EOPNOTSUPP : 0; | |
855 | } | |
856 | } | |
40358701 | 857 | |
fb8f22c1 BY |
858 | static int |
859 | ofproto_get_ipfix_stats(struct ofproto *ofproto, | |
860 | bool bridge_ipfix, | |
861 | struct ovs_list *replies) | |
862 | { | |
863 | int error; | |
864 | ||
865 | if (ofproto->ofproto_class->get_ipfix_stats) { | |
866 | error = ofproto->ofproto_class->get_ipfix_stats(ofproto, | |
867 | bridge_ipfix, | |
868 | replies); | |
869 | } else { | |
870 | error = EOPNOTSUPP; | |
871 | } | |
872 | ||
873 | return error; | |
874 | } | |
875 | ||
876 | static enum ofperr | |
877 | handle_ipfix_bridge_stats_request(struct ofconn *ofconn, | |
878 | const struct ofp_header *request) | |
879 | { | |
880 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
881 | struct ovs_list replies; | |
882 | enum ofperr error; | |
883 | ||
884 | ofpmp_init(&replies, request); | |
885 | error = ofproto_get_ipfix_stats(ofproto, true, &replies); | |
886 | ||
887 | if (!error) { | |
888 | ofconn_send_replies(ofconn, &replies); | |
889 | } else { | |
890 | ofpbuf_list_delete(&replies); | |
891 | } | |
892 | ||
893 | return error; | |
894 | } | |
895 | ||
896 | static enum ofperr | |
897 | handle_ipfix_flow_stats_request(struct ofconn *ofconn, | |
898 | const struct ofp_header *request) | |
899 | { | |
900 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
901 | struct ovs_list replies; | |
902 | enum ofperr error; | |
903 | ||
904 | ofpmp_init(&replies, request); | |
905 | error = ofproto_get_ipfix_stats(ofproto, false, &replies); | |
906 | ||
907 | if (!error) { | |
908 | ofconn_send_replies(ofconn, &replies); | |
909 | } else { | |
910 | ofpbuf_list_delete(&replies); | |
911 | } | |
912 | ||
913 | return error; | |
914 | } | |
915 | ||
40358701 GS |
916 | void |
917 | ofproto_set_flow_restore_wait(bool flow_restore_wait_db) | |
918 | { | |
919 | flow_restore_wait = flow_restore_wait_db; | |
920 | } | |
921 | ||
922 | bool | |
923 | ofproto_get_flow_restore_wait(void) | |
924 | { | |
925 | return flow_restore_wait; | |
926 | } | |
927 | ||
e7934396 | 928 | \f |
21f7563c JP |
929 | /* Spanning Tree Protocol (STP) configuration. */ |
930 | ||
931 | /* Configures STP on 'ofproto' using the settings defined in 's'. If | |
932 | * 's' is NULL, disables STP. | |
933 | * | |
934 | * Returns 0 if successful, otherwise a positive errno value. */ | |
935 | int | |
936 | ofproto_set_stp(struct ofproto *ofproto, | |
937 | const struct ofproto_stp_settings *s) | |
938 | { | |
939 | return (ofproto->ofproto_class->set_stp | |
940 | ? ofproto->ofproto_class->set_stp(ofproto, s) | |
941 | : EOPNOTSUPP); | |
942 | } | |
943 | ||
944 | /* Retrieves STP status of 'ofproto' and stores it in 's'. If the | |
945 | * 'enabled' member of 's' is false, then the other members are not | |
946 | * meaningful. | |
947 | * | |
948 | * Returns 0 if successful, otherwise a positive errno value. */ | |
949 | int | |
950 | ofproto_get_stp_status(struct ofproto *ofproto, | |
951 | struct ofproto_stp_status *s) | |
952 | { | |
953 | return (ofproto->ofproto_class->get_stp_status | |
954 | ? ofproto->ofproto_class->get_stp_status(ofproto, s) | |
955 | : EOPNOTSUPP); | |
956 | } | |
957 | ||
958 | /* Configures STP on 'ofp_port' of 'ofproto' using the settings defined | |
959 | * in 's'. The caller is responsible for assigning STP port numbers | |
960 | * (using the 'port_num' member in the range of 1 through 255, inclusive) | |
961 | * and ensuring there are no duplicates. If the 's' is NULL, then STP | |
962 | * is disabled on the port. | |
963 | * | |
964 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
965 | int | |
4e022ec0 | 966 | ofproto_port_set_stp(struct ofproto *ofproto, ofp_port_t ofp_port, |
21f7563c JP |
967 | const struct ofproto_port_stp_settings *s) |
968 | { | |
969 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
970 | if (!ofport) { | |
971 | VLOG_WARN("%s: cannot configure STP on nonexistent port %"PRIu16, | |
972 | ofproto->name, ofp_port); | |
973 | return ENODEV; | |
974 | } | |
975 | ||
976 | return (ofproto->ofproto_class->set_stp_port | |
977 | ? ofproto->ofproto_class->set_stp_port(ofport, s) | |
978 | : EOPNOTSUPP); | |
979 | } | |
980 | ||
981 | /* Retrieves STP port status of 'ofp_port' on 'ofproto' and stores it in | |
982 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
983 | * are not meaningful. | |
984 | * | |
985 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
986 | int | |
4e022ec0 | 987 | ofproto_port_get_stp_status(struct ofproto *ofproto, ofp_port_t ofp_port, |
21f7563c JP |
988 | struct ofproto_port_stp_status *s) |
989 | { | |
990 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
991 | if (!ofport) { | |
b0a5c43b JP |
992 | VLOG_WARN_RL(&rl, "%s: cannot get STP status on nonexistent " |
993 | "port %"PRIu16, ofproto->name, ofp_port); | |
21f7563c JP |
994 | return ENODEV; |
995 | } | |
996 | ||
997 | return (ofproto->ofproto_class->get_stp_port_status | |
998 | ? ofproto->ofproto_class->get_stp_port_status(ofport, s) | |
999 | : EOPNOTSUPP); | |
1000 | } | |
fd28ce3a JS |
1001 | |
1002 | /* Retrieves STP port statistics of 'ofp_port' on 'ofproto' and stores it in | |
1003 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
1004 | * are not meaningful. | |
1005 | * | |
1006 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
1007 | int | |
1008 | ofproto_port_get_stp_stats(struct ofproto *ofproto, ofp_port_t ofp_port, | |
1009 | struct ofproto_port_stp_stats *s) | |
1010 | { | |
1011 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1012 | if (!ofport) { | |
1013 | VLOG_WARN_RL(&rl, "%s: cannot get STP stats on nonexistent " | |
1014 | "port %"PRIu16, ofproto->name, ofp_port); | |
1015 | return ENODEV; | |
1016 | } | |
1017 | ||
1018 | return (ofproto->ofproto_class->get_stp_port_stats | |
1019 | ? ofproto->ofproto_class->get_stp_port_stats(ofport, s) | |
1020 | : EOPNOTSUPP); | |
1021 | } | |
9efd308e DV |
1022 | |
1023 | /* Rapid Spanning Tree Protocol (RSTP) configuration. */ | |
1024 | ||
1025 | /* Configures RSTP on 'ofproto' using the settings defined in 's'. If | |
1026 | * 's' is NULL, disables RSTP. | |
1027 | * | |
1028 | * Returns 0 if successful, otherwise a positive errno value. */ | |
1029 | int | |
1030 | ofproto_set_rstp(struct ofproto *ofproto, | |
1031 | const struct ofproto_rstp_settings *s) | |
1032 | { | |
1033 | if (!ofproto->ofproto_class->set_rstp) { | |
1034 | return EOPNOTSUPP; | |
1035 | } | |
1036 | ofproto->ofproto_class->set_rstp(ofproto, s); | |
1037 | return 0; | |
1038 | } | |
1039 | ||
1040 | /* Retrieves RSTP status of 'ofproto' and stores it in 's'. If the | |
1041 | * 'enabled' member of 's' is false, then the other members are not | |
1042 | * meaningful. | |
1043 | * | |
1044 | * Returns 0 if successful, otherwise a positive errno value. */ | |
1045 | int | |
1046 | ofproto_get_rstp_status(struct ofproto *ofproto, | |
1047 | struct ofproto_rstp_status *s) | |
1048 | { | |
1049 | if (!ofproto->ofproto_class->get_rstp_status) { | |
1050 | return EOPNOTSUPP; | |
1051 | } | |
1052 | ofproto->ofproto_class->get_rstp_status(ofproto, s); | |
1053 | return 0; | |
1054 | } | |
1055 | ||
1056 | /* Configures RSTP on 'ofp_port' of 'ofproto' using the settings defined | |
1057 | * in 's'. The caller is responsible for assigning RSTP port numbers | |
1058 | * (using the 'port_num' member in the range of 1 through 255, inclusive) | |
1059 | * and ensuring there are no duplicates. If the 's' is NULL, then RSTP | |
1060 | * is disabled on the port. | |
1061 | * | |
1062 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
1063 | int | |
1064 | ofproto_port_set_rstp(struct ofproto *ofproto, ofp_port_t ofp_port, | |
1065 | const struct ofproto_port_rstp_settings *s) | |
1066 | { | |
1067 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1068 | if (!ofport) { | |
1069 | VLOG_WARN("%s: cannot configure RSTP on nonexistent port %"PRIu16, | |
1070 | ofproto->name, ofp_port); | |
1071 | return ENODEV; | |
1072 | } | |
1073 | ||
1074 | if (!ofproto->ofproto_class->set_rstp_port) { | |
1075 | return EOPNOTSUPP; | |
1076 | } | |
1077 | ofproto->ofproto_class->set_rstp_port(ofport, s); | |
1078 | return 0; | |
1079 | } | |
1080 | ||
1081 | /* Retrieves RSTP port status of 'ofp_port' on 'ofproto' and stores it in | |
1082 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
1083 | * are not meaningful. | |
1084 | * | |
1085 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
1086 | int | |
1087 | ofproto_port_get_rstp_status(struct ofproto *ofproto, ofp_port_t ofp_port, | |
1088 | struct ofproto_port_rstp_status *s) | |
1089 | { | |
1090 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1091 | if (!ofport) { | |
1092 | VLOG_WARN_RL(&rl, "%s: cannot get RSTP status on nonexistent " | |
1093 | "port %"PRIu16, ofproto->name, ofp_port); | |
1094 | return ENODEV; | |
1095 | } | |
1096 | ||
1097 | if (!ofproto->ofproto_class->get_rstp_port_status) { | |
1098 | return EOPNOTSUPP; | |
1099 | } | |
1100 | ofproto->ofproto_class->get_rstp_port_status(ofport, s); | |
1101 | return 0; | |
1102 | } | |
21f7563c | 1103 | \f |
8b36f51e EJ |
1104 | /* Queue DSCP configuration. */ |
1105 | ||
1106 | /* Registers meta-data associated with the 'n_qdscp' Qualities of Service | |
1107 | * 'queues' attached to 'ofport'. This data is not intended to be sufficient | |
1108 | * to implement QoS. Instead, it is used to implement features which require | |
1109 | * knowledge of what queues exist on a port, and some basic information about | |
1110 | * them. | |
1111 | * | |
1112 | * Returns 0 if successful, otherwise a positive errno value. */ | |
1113 | int | |
4e022ec0 | 1114 | ofproto_port_set_queues(struct ofproto *ofproto, ofp_port_t ofp_port, |
8b36f51e EJ |
1115 | const struct ofproto_port_queue *queues, |
1116 | size_t n_queues) | |
1117 | { | |
1118 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1119 | ||
1120 | if (!ofport) { | |
1121 | VLOG_WARN("%s: cannot set queues on nonexistent port %"PRIu16, | |
1122 | ofproto->name, ofp_port); | |
1123 | return ENODEV; | |
1124 | } | |
1125 | ||
1126 | return (ofproto->ofproto_class->set_queues | |
1127 | ? ofproto->ofproto_class->set_queues(ofport, queues, n_queues) | |
1128 | : EOPNOTSUPP); | |
1129 | } | |
1130 | \f | |
0477baa9 DF |
1131 | /* LLDP configuration. */ |
1132 | void | |
1133 | ofproto_port_set_lldp(struct ofproto *ofproto, | |
1134 | ofp_port_t ofp_port, | |
1135 | const struct smap *cfg) | |
1136 | { | |
1137 | struct ofport *ofport; | |
1138 | int error; | |
1139 | ||
1140 | ofport = ofproto_get_port(ofproto, ofp_port); | |
1141 | if (!ofport) { | |
1142 | VLOG_WARN("%s: cannot configure LLDP on nonexistent port %"PRIu16, | |
1143 | ofproto->name, ofp_port); | |
1144 | return; | |
1145 | } | |
1146 | error = (ofproto->ofproto_class->set_lldp | |
1147 | ? ofproto->ofproto_class->set_lldp(ofport, cfg) | |
1148 | : EOPNOTSUPP); | |
1149 | if (error) { | |
1150 | VLOG_WARN("%s: lldp configuration on port %"PRIu16" (%s) failed (%s)", | |
1151 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
1152 | ovs_strerror(error)); | |
1153 | } | |
1154 | } | |
1155 | ||
1156 | int | |
1157 | ofproto_set_aa(struct ofproto *ofproto, void *aux OVS_UNUSED, | |
1158 | const struct aa_settings *s) | |
1159 | { | |
1160 | if (!ofproto->ofproto_class->set_aa) { | |
1161 | return EOPNOTSUPP; | |
1162 | } | |
1163 | ofproto->ofproto_class->set_aa(ofproto, s); | |
1164 | return 0; | |
1165 | } | |
1166 | ||
1167 | int | |
1168 | ofproto_aa_mapping_register(struct ofproto *ofproto, void *aux, | |
1169 | const struct aa_mapping_settings *s) | |
1170 | { | |
1171 | if (!ofproto->ofproto_class->aa_mapping_set) { | |
1172 | return EOPNOTSUPP; | |
1173 | } | |
1174 | ofproto->ofproto_class->aa_mapping_set(ofproto, aux, s); | |
1175 | return 0; | |
1176 | } | |
1177 | ||
1178 | int | |
1179 | ofproto_aa_mapping_unregister(struct ofproto *ofproto, void *aux) | |
1180 | { | |
1181 | if (!ofproto->ofproto_class->aa_mapping_unset) { | |
1182 | return EOPNOTSUPP; | |
1183 | } | |
1184 | ofproto->ofproto_class->aa_mapping_unset(ofproto, aux); | |
1185 | return 0; | |
1186 | } | |
1187 | ||
1188 | int | |
1189 | ofproto_aa_vlan_get_queued(struct ofproto *ofproto, | |
1190 | struct ovs_list *list) | |
1191 | { | |
1192 | if (!ofproto->ofproto_class->aa_vlan_get_queued) { | |
1193 | return EOPNOTSUPP; | |
1194 | } | |
1195 | ofproto->ofproto_class->aa_vlan_get_queued(ofproto, list); | |
1196 | return 0; | |
1197 | } | |
1198 | ||
1199 | unsigned int | |
1200 | ofproto_aa_vlan_get_queue_size(struct ofproto *ofproto) | |
1201 | { | |
1202 | if (!ofproto->ofproto_class->aa_vlan_get_queue_size) { | |
1203 | return EOPNOTSUPP; | |
1204 | } | |
1205 | return ofproto->ofproto_class->aa_vlan_get_queue_size(ofproto); | |
1206 | } | |
1207 | ||
e7934396 BP |
1208 | /* Connectivity Fault Management configuration. */ |
1209 | ||
892815f5 | 1210 | /* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */ |
e7934396 | 1211 | void |
4e022ec0 | 1212 | ofproto_port_clear_cfm(struct ofproto *ofproto, ofp_port_t ofp_port) |
e7934396 | 1213 | { |
abe529af BP |
1214 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1215 | if (ofport && ofproto->ofproto_class->set_cfm) { | |
a5610457 | 1216 | ofproto->ofproto_class->set_cfm(ofport, NULL); |
e7934396 BP |
1217 | } |
1218 | } | |
72b06300 | 1219 | |
892815f5 | 1220 | /* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes |
93b8df38 EJ |
1221 | * basic configuration from the configuration members in 'cfm', and the remote |
1222 | * maintenance point ID from remote_mpid. Ignores the statistics members of | |
1223 | * 'cfm'. | |
e7934396 | 1224 | * |
892815f5 | 1225 | * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */ |
e7934396 | 1226 | void |
4e022ec0 | 1227 | ofproto_port_set_cfm(struct ofproto *ofproto, ofp_port_t ofp_port, |
a5610457 | 1228 | const struct cfm_settings *s) |
e7934396 BP |
1229 | { |
1230 | struct ofport *ofport; | |
abe529af | 1231 | int error; |
e7934396 | 1232 | |
abe529af | 1233 | ofport = ofproto_get_port(ofproto, ofp_port); |
e7934396 | 1234 | if (!ofport) { |
892815f5 BP |
1235 | VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16, |
1236 | ofproto->name, ofp_port); | |
e7934396 BP |
1237 | return; |
1238 | } | |
1239 | ||
93b8df38 EJ |
1240 | /* XXX: For configuration simplicity, we only support one remote_mpid |
1241 | * outside of the CFM module. It's not clear if this is the correct long | |
1242 | * term solution or not. */ | |
abe529af | 1243 | error = (ofproto->ofproto_class->set_cfm |
a5610457 | 1244 | ? ofproto->ofproto_class->set_cfm(ofport, s) |
abe529af BP |
1245 | : EOPNOTSUPP); |
1246 | if (error) { | |
1247 | VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed (%s)", | |
1248 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
10a89ef0 | 1249 | ovs_strerror(error)); |
e7934396 | 1250 | } |
e7934396 | 1251 | } |
e7934396 | 1252 | |
ccc09689 EJ |
1253 | /* Configures BFD on 'ofp_port' in 'ofproto'. This function has no effect if |
1254 | * 'ofproto' does not have a port 'ofp_port'. */ | |
1255 | void | |
4e022ec0 | 1256 | ofproto_port_set_bfd(struct ofproto *ofproto, ofp_port_t ofp_port, |
ccc09689 EJ |
1257 | const struct smap *cfg) |
1258 | { | |
1259 | struct ofport *ofport; | |
1260 | int error; | |
1261 | ||
1262 | ofport = ofproto_get_port(ofproto, ofp_port); | |
1263 | if (!ofport) { | |
1264 | VLOG_WARN("%s: cannot configure bfd on nonexistent port %"PRIu16, | |
1265 | ofproto->name, ofp_port); | |
e8999bdc | 1266 | return; |
ccc09689 EJ |
1267 | } |
1268 | ||
1269 | error = (ofproto->ofproto_class->set_bfd | |
1270 | ? ofproto->ofproto_class->set_bfd(ofport, cfg) | |
1271 | : EOPNOTSUPP); | |
1272 | if (error) { | |
1273 | VLOG_WARN("%s: bfd configuration on port %"PRIu16" (%s) failed (%s)", | |
1274 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
10a89ef0 | 1275 | ovs_strerror(error)); |
ccc09689 EJ |
1276 | } |
1277 | } | |
1278 | ||
8f5514fe AW |
1279 | /* Checks the status change of BFD on 'ofport'. |
1280 | * | |
1281 | * Returns true if 'ofproto_class' does not support 'bfd_status_changed'. */ | |
1282 | bool | |
1283 | ofproto_port_bfd_status_changed(struct ofproto *ofproto, ofp_port_t ofp_port) | |
1284 | { | |
1285 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1286 | return (ofport && ofproto->ofproto_class->bfd_status_changed | |
1287 | ? ofproto->ofproto_class->bfd_status_changed(ofport) | |
1288 | : true); | |
1289 | } | |
1290 | ||
88bf179a | 1291 | /* Populates 'status' with the status of BFD on 'ofport'. Returns 0 on |
8f5514fe AW |
1292 | * success. Returns a positive errno otherwise. Has no effect if 'ofp_port' |
1293 | * is not an OpenFlow port in 'ofproto'. | |
88bf179a AW |
1294 | * |
1295 | * The caller must provide and own '*status'. */ | |
ccc09689 | 1296 | int |
4e022ec0 | 1297 | ofproto_port_get_bfd_status(struct ofproto *ofproto, ofp_port_t ofp_port, |
ccc09689 EJ |
1298 | struct smap *status) |
1299 | { | |
1300 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1301 | return (ofport && ofproto->ofproto_class->get_bfd_status | |
1302 | ? ofproto->ofproto_class->get_bfd_status(ofport, status) | |
1303 | : EOPNOTSUPP); | |
1304 | } | |
1305 | ||
fa066f01 BP |
1306 | /* Checks the status of LACP negotiation for 'ofp_port' within ofproto. |
1307 | * Returns 1 if LACP partner information for 'ofp_port' is up-to-date, | |
1308 | * 0 if LACP partner information is not current (generally indicating a | |
1309 | * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */ | |
1310 | int | |
4e022ec0 | 1311 | ofproto_port_is_lacp_current(struct ofproto *ofproto, ofp_port_t ofp_port) |
fa066f01 | 1312 | { |
abe529af BP |
1313 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1314 | return (ofport && ofproto->ofproto_class->port_is_lacp_current | |
1315 | ? ofproto->ofproto_class->port_is_lacp_current(ofport) | |
fa066f01 | 1316 | : -1); |
e7934396 | 1317 | } |
50b9699f NM |
1318 | |
1319 | int | |
1320 | ofproto_port_get_lacp_stats(const struct ofport *port, struct lacp_slave_stats *stats) | |
1321 | { | |
1322 | struct ofproto *ofproto = port->ofproto; | |
1323 | int error; | |
1324 | ||
1325 | if (ofproto->ofproto_class->port_get_lacp_stats) { | |
1326 | error = ofproto->ofproto_class->port_get_lacp_stats(port, stats); | |
1327 | } else { | |
1328 | error = EOPNOTSUPP; | |
1329 | } | |
1330 | ||
1331 | return error; | |
1332 | } | |
e7934396 | 1333 | \f |
fa066f01 | 1334 | /* Bundles. */ |
e7934396 | 1335 | |
abe529af BP |
1336 | /* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'. |
1337 | * A bundle is the same concept as a Port in OVSDB, that is, it consists of one | |
1338 | * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN | |
1339 | * configuration plus, if there is more than one slave, a bonding | |
1340 | * configuration. | |
1341 | * | |
1342 | * If 'aux' is already registered then this function updates its configuration | |
1343 | * to 's'. Otherwise, this function registers a new bundle. | |
1344 | * | |
1345 | * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL | |
1346 | * port. */ | |
1347 | int | |
1348 | ofproto_bundle_register(struct ofproto *ofproto, void *aux, | |
1349 | const struct ofproto_bundle_settings *s) | |
fa066f01 | 1350 | { |
abe529af BP |
1351 | return (ofproto->ofproto_class->bundle_set |
1352 | ? ofproto->ofproto_class->bundle_set(ofproto, aux, s) | |
1353 | : EOPNOTSUPP); | |
fa066f01 BP |
1354 | } |
1355 | ||
abe529af BP |
1356 | /* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'. |
1357 | * If no such bundle has been registered, this has no effect. */ | |
1358 | int | |
1359 | ofproto_bundle_unregister(struct ofproto *ofproto, void *aux) | |
e7934396 | 1360 | { |
abe529af | 1361 | return ofproto_bundle_register(ofproto, aux, NULL); |
e7934396 | 1362 | } |
fa066f01 | 1363 | |
e7934396 | 1364 | \f |
abe529af BP |
1365 | /* Registers a mirror associated with client data pointer 'aux' in 'ofproto'. |
1366 | * If 'aux' is already registered then this function updates its configuration | |
c06bba01 | 1367 | * to 's'. Otherwise, this function registers a new mirror. */ |
abe529af BP |
1368 | int |
1369 | ofproto_mirror_register(struct ofproto *ofproto, void *aux, | |
1370 | const struct ofproto_mirror_settings *s) | |
064af421 | 1371 | { |
abe529af BP |
1372 | return (ofproto->ofproto_class->mirror_set |
1373 | ? ofproto->ofproto_class->mirror_set(ofproto, aux, s) | |
1374 | : EOPNOTSUPP); | |
064af421 BP |
1375 | } |
1376 | ||
abe529af BP |
1377 | /* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'. |
1378 | * If no mirror has been registered, this has no effect. */ | |
1379 | int | |
1380 | ofproto_mirror_unregister(struct ofproto *ofproto, void *aux) | |
064af421 | 1381 | { |
abe529af | 1382 | return ofproto_mirror_register(ofproto, aux, NULL); |
064af421 BP |
1383 | } |
1384 | ||
9d24de3b JP |
1385 | /* Retrieves statistics from mirror associated with client data pointer |
1386 | * 'aux' in 'ofproto'. Stores packet and byte counts in 'packets' and | |
1387 | * 'bytes', respectively. If a particular counters is not supported, | |
0477baa9 DF |
1388 | * the appropriate argument is set to UINT64_MAX. |
1389 | */ | |
9d24de3b JP |
1390 | int |
1391 | ofproto_mirror_get_stats(struct ofproto *ofproto, void *aux, | |
1392 | uint64_t *packets, uint64_t *bytes) | |
1393 | { | |
1394 | if (!ofproto->ofproto_class->mirror_get_stats) { | |
1395 | *packets = *bytes = UINT64_MAX; | |
1396 | return EOPNOTSUPP; | |
1397 | } | |
1398 | ||
1399 | return ofproto->ofproto_class->mirror_get_stats(ofproto, aux, | |
1400 | packets, bytes); | |
1401 | } | |
1402 | ||
abe529af BP |
1403 | /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on |
1404 | * which all packets are flooded, instead of using MAC learning. If | |
1405 | * 'flood_vlans' is NULL, then MAC learning applies to all VLANs. | |
1406 | * | |
1407 | * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL | |
1408 | * port. */ | |
1409 | int | |
1410 | ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans) | |
abdfe474 | 1411 | { |
abe529af BP |
1412 | return (ofproto->ofproto_class->set_flood_vlans |
1413 | ? ofproto->ofproto_class->set_flood_vlans(ofproto, flood_vlans) | |
1414 | : EOPNOTSUPP); | |
abdfe474 JP |
1415 | } |
1416 | ||
abe529af BP |
1417 | /* Returns true if 'aux' is a registered bundle that is currently in use as the |
1418 | * output for a mirror. */ | |
1419 | bool | |
b4affc74 | 1420 | ofproto_is_mirror_output_bundle(const struct ofproto *ofproto, void *aux) |
abe529af BP |
1421 | { |
1422 | return (ofproto->ofproto_class->is_mirror_output_bundle | |
1423 | ? ofproto->ofproto_class->is_mirror_output_bundle(ofproto, aux) | |
1424 | : false); | |
1425 | } | |
1426 | \f | |
254750ce BP |
1427 | /* Configuration of OpenFlow tables. */ |
1428 | ||
1429 | /* Returns the number of OpenFlow tables in 'ofproto'. */ | |
1430 | int | |
1431 | ofproto_get_n_tables(const struct ofproto *ofproto) | |
1432 | { | |
1433 | return ofproto->n_tables; | |
1434 | } | |
1435 | ||
adcf00ba AZ |
1436 | /* Returns the number of Controller visible OpenFlow tables |
1437 | * in 'ofproto'. This number will exclude Hidden tables. | |
1438 | * This funtion's return value should be less or equal to that of | |
1439 | * ofproto_get_n_tables() . */ | |
1440 | uint8_t | |
1441 | ofproto_get_n_visible_tables(const struct ofproto *ofproto) | |
1442 | { | |
1443 | uint8_t n = ofproto->n_tables; | |
1444 | ||
1445 | /* Count only non-hidden tables in the number of tables. (Hidden tables, | |
1446 | * if present, are always at the end.) */ | |
1447 | while(n && (ofproto->tables[n - 1].flags & OFTABLE_HIDDEN)) { | |
1448 | n--; | |
1449 | } | |
1450 | ||
1451 | return n; | |
1452 | } | |
1453 | ||
254750ce BP |
1454 | /* Configures the OpenFlow table in 'ofproto' with id 'table_id' with the |
1455 | * settings from 's'. 'table_id' must be in the range 0 through the number of | |
1456 | * OpenFlow tables in 'ofproto' minus 1, inclusive. | |
1457 | * | |
1458 | * For read-only tables, only the name may be configured. */ | |
1459 | void | |
1460 | ofproto_configure_table(struct ofproto *ofproto, int table_id, | |
1461 | const struct ofproto_table_settings *s) | |
1462 | { | |
1463 | struct oftable *table; | |
1464 | ||
cb22974d | 1465 | ovs_assert(table_id >= 0 && table_id < ofproto->n_tables); |
254750ce BP |
1466 | table = &ofproto->tables[table_id]; |
1467 | ||
1468 | oftable_set_name(table, s->name); | |
1469 | ||
1470 | if (table->flags & OFTABLE_READONLY) { | |
1471 | return; | |
1472 | } | |
1473 | ||
f358a2cb JR |
1474 | if (classifier_set_prefix_fields(&table->cls, |
1475 | s->prefix_fields, s->n_prefix_fields)) { | |
1476 | /* XXX: Trigger revalidation. */ | |
1477 | } | |
834fe5cb BP |
1478 | |
1479 | ovs_mutex_lock(&ofproto_mutex); | |
82c22d34 BP |
1480 | unsigned int new_eviction = (s->enable_eviction |
1481 | ? table->eviction | EVICTION_CLIENT | |
1482 | : table->eviction & ~EVICTION_CLIENT); | |
1483 | oftable_configure_eviction(table, new_eviction, s->groups, s->n_groups); | |
7394b8fb | 1484 | table->max_flows = s->max_flows; |
6787a49f | 1485 | evict_rules_from_table(table); |
834fe5cb | 1486 | ovs_mutex_unlock(&ofproto_mutex); |
254750ce BP |
1487 | } |
1488 | \f | |
81e2083f BP |
1489 | bool |
1490 | ofproto_has_snoops(const struct ofproto *ofproto) | |
1491 | { | |
1492 | return connmgr_has_snoops(ofproto->connmgr); | |
1493 | } | |
1494 | ||
064af421 | 1495 | void |
81e2083f | 1496 | ofproto_get_snoops(const struct ofproto *ofproto, struct sset *snoops) |
064af421 | 1497 | { |
19a87e36 | 1498 | connmgr_get_snoops(ofproto->connmgr, snoops); |
064af421 BP |
1499 | } |
1500 | ||
a73fcd71 | 1501 | /* Deletes 'rule' from 'ofproto'. |
8037acb4 | 1502 | * |
b74cb5d8 BP |
1503 | * Within an ofproto implementation, this function allows an ofproto |
1504 | * implementation to destroy any rules that remain when its ->destruct() | |
1505 | * function is called. This function is not suitable for use elsewhere in an | |
1506 | * ofproto implementation. | |
1507 | * | |
b74cb5d8 | 1508 | * This function implements steps 4.4 and 4.5 in the section titled "Rule Life |
8b81d1ef | 1509 | * Cycle" in ofproto-provider.h. */ |
b74cb5d8 | 1510 | void |
8b81d1ef | 1511 | ofproto_rule_delete(struct ofproto *ofproto, struct rule *rule) |
15aaf599 | 1512 | OVS_EXCLUDED(ofproto_mutex) |
7ee20df1 | 1513 | { |
834fe5cb BP |
1514 | /* This skips the ofmonitor and flow-removed notifications because the |
1515 | * switch is being deleted and any OpenFlow channels have been or soon will | |
1516 | * be killed. */ | |
15aaf599 | 1517 | ovs_mutex_lock(&ofproto_mutex); |
39c94593 JR |
1518 | |
1519 | if (!rule->removed) { | |
1520 | /* Make sure there is no postponed removal of the rule. */ | |
44e0c35d | 1521 | ovs_assert(cls_rule_visible_in_version(&rule->cr, OVS_VERSION_MAX)); |
39c94593 JR |
1522 | |
1523 | if (!classifier_remove(&rule->ofproto->tables[rule->table_id].cls, | |
1524 | &rule->cr)) { | |
1525 | OVS_NOT_REACHED(); | |
1526 | } | |
1527 | ofproto_rule_remove__(rule->ofproto, rule); | |
1fc71871 JR |
1528 | if (ofproto->ofproto_class->rule_delete) { |
1529 | ofproto->ofproto_class->rule_delete(rule); | |
1530 | } | |
39c94593 JR |
1531 | ofproto_rule_unref(rule); |
1532 | } | |
15aaf599 | 1533 | ovs_mutex_unlock(&ofproto_mutex); |
8037acb4 BP |
1534 | } |
1535 | ||
1536 | static void | |
1537 | ofproto_flush__(struct ofproto *ofproto) | |
15aaf599 | 1538 | OVS_EXCLUDED(ofproto_mutex) |
8037acb4 | 1539 | { |
d0918789 | 1540 | struct oftable *table; |
7ee20df1 | 1541 | |
3948503a | 1542 | /* This will flush all datapath flows. */ |
7ee20df1 BP |
1543 | if (ofproto->ofproto_class->flush) { |
1544 | ofproto->ofproto_class->flush(ofproto); | |
1545 | } | |
1546 | ||
3948503a JR |
1547 | /* XXX: There is a small race window here, where new datapath flows can be |
1548 | * created by upcall handlers based on the existing flow table. We can not | |
1549 | * call ofproto class flush while holding 'ofproto_mutex' to prevent this, | |
1550 | * as then we could deadlock on syncing with the handler threads waiting on | |
1551 | * the same mutex. */ | |
1552 | ||
15aaf599 | 1553 | ovs_mutex_lock(&ofproto_mutex); |
b772ded8 | 1554 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
802f84ff | 1555 | struct rule_collection rules; |
78c8df12 | 1556 | struct rule *rule; |
7ee20df1 | 1557 | |
5c67e4af BP |
1558 | if (table->flags & OFTABLE_HIDDEN) { |
1559 | continue; | |
1560 | } | |
1561 | ||
802f84ff JR |
1562 | rule_collection_init(&rules); |
1563 | ||
de4ad4a2 | 1564 | CLS_FOR_EACH (rule, cr, &table->cls) { |
802f84ff | 1565 | rule_collection_add(&rules, rule); |
7ee20df1 | 1566 | } |
802f84ff | 1567 | delete_flows__(&rules, OFPRR_DELETE, NULL); |
7ee20df1 | 1568 | } |
3948503a JR |
1569 | /* XXX: Concurrent handler threads may insert new learned flows based on |
1570 | * learn actions of the now deleted flows right after we release | |
1571 | * 'ofproto_mutex'. */ | |
15aaf599 | 1572 | ovs_mutex_unlock(&ofproto_mutex); |
7ee20df1 BP |
1573 | } |
1574 | ||
abe529af BP |
1575 | static void |
1576 | ofproto_destroy__(struct ofproto *ofproto) | |
15aaf599 | 1577 | OVS_EXCLUDED(ofproto_mutex) |
abe529af | 1578 | { |
d0918789 | 1579 | struct oftable *table; |
6c1491fb | 1580 | |
35412852 | 1581 | destroy_rule_executes(ofproto); |
5c09b672 GS |
1582 | |
1583 | guarded_list_destroy(&ofproto->rule_executes); | |
db88b35c | 1584 | cmap_destroy(&ofproto->groups); |
7395c052 | 1585 | |
abe529af BP |
1586 | hmap_remove(&all_ofprotos, &ofproto->hmap_node); |
1587 | free(ofproto->name); | |
955a7127 | 1588 | free(ofproto->type); |
abe529af BP |
1589 | free(ofproto->mfr_desc); |
1590 | free(ofproto->hw_desc); | |
1591 | free(ofproto->sw_desc); | |
1592 | free(ofproto->serial_desc); | |
1593 | free(ofproto->dp_desc); | |
abe529af | 1594 | hmap_destroy(&ofproto->ports); |
fdcea803 | 1595 | hmap_destroy(&ofproto->ofport_usage); |
abe529af | 1596 | shash_destroy(&ofproto->port_by_name); |
e1b1d06a | 1597 | simap_destroy(&ofproto->ofp_requests); |
6c1491fb | 1598 | |
b772ded8 | 1599 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
d0918789 | 1600 | oftable_destroy(table); |
6c1491fb BP |
1601 | } |
1602 | free(ofproto->tables); | |
fa066f01 | 1603 | |
1406c79b BP |
1604 | ovs_assert(hindex_is_empty(&ofproto->cookies)); |
1605 | hindex_destroy(&ofproto->cookies); | |
1606 | ||
35f48b8b BP |
1607 | ovs_assert(hmap_is_empty(&ofproto->learned_cookies)); |
1608 | hmap_destroy(&ofproto->learned_cookies); | |
1609 | ||
abe529af BP |
1610 | ofproto->ofproto_class->dealloc(ofproto); |
1611 | } | |
fa066f01 | 1612 | |
39c94593 JR |
1613 | /* Destroying rules is doubly deferred, must have 'ofproto' around for them. |
1614 | * - 1st we defer the removal of the rules from the classifier | |
1615 | * - 2nd we defer the actual destruction of the rules. */ | |
1616 | static void | |
1617 | ofproto_destroy_defer__(struct ofproto *ofproto) | |
1618 | OVS_EXCLUDED(ofproto_mutex) | |
1619 | { | |
1620 | ovsrcu_postpone(ofproto_destroy__, ofproto); | |
1621 | } | |
1622 | ||
064af421 | 1623 | void |
9aad5a5a | 1624 | ofproto_destroy(struct ofproto *p, bool del) |
15aaf599 | 1625 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 1626 | { |
ca0f572c | 1627 | struct ofport *ofport, *next_ofport; |
4ec3d7c7 | 1628 | struct ofport_usage *usage; |
064af421 BP |
1629 | |
1630 | if (!p) { | |
1631 | return; | |
1632 | } | |
1633 | ||
717de9ff JR |
1634 | if (p->meters) { |
1635 | meter_delete(p, 1, p->meter_features.max_meters); | |
1636 | p->meter_features.max_meters = 0; | |
1637 | free(p->meters); | |
1638 | p->meters = NULL; | |
1639 | } | |
1640 | ||
7ee20df1 | 1641 | ofproto_flush__(p); |
4e8e4213 | 1642 | HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) { |
9aad5a5a | 1643 | ofport_destroy(ofport, del); |
064af421 | 1644 | } |
064af421 | 1645 | |
4ec3d7c7 | 1646 | HMAP_FOR_EACH_POP (usage, hmap_node, &p->ofport_usage) { |
fdcea803 GS |
1647 | free(usage); |
1648 | } | |
1649 | ||
abe529af | 1650 | p->ofproto_class->destruct(p); |
58f19539 DDP |
1651 | |
1652 | /* We should not postpone this because it involves deleting a listening | |
1653 | * socket which we may want to reopen soon. 'connmgr' should not be used | |
1654 | * by other threads */ | |
1655 | connmgr_destroy(p->connmgr); | |
1656 | ||
f416c8d6 | 1657 | /* Destroying rules is deferred, must have 'ofproto' around for them. */ |
39c94593 | 1658 | ovsrcu_postpone(ofproto_destroy_defer__, p); |
064af421 BP |
1659 | } |
1660 | ||
abe529af BP |
1661 | /* Destroys the datapath with the respective 'name' and 'type'. With the Linux |
1662 | * kernel datapath, for example, this destroys the datapath in the kernel, and | |
1663 | * with the netdev-based datapath, it tears down the data structures that | |
1664 | * represent the datapath. | |
1665 | * | |
1666 | * The datapath should not be currently open as an ofproto. */ | |
064af421 | 1667 | int |
abe529af | 1668 | ofproto_delete(const char *name, const char *type) |
064af421 | 1669 | { |
abe529af BP |
1670 | const struct ofproto_class *class = ofproto_class_find__(type); |
1671 | return (!class ? EAFNOSUPPORT | |
1672 | : !class->del ? EACCES | |
1673 | : class->del(type, name)); | |
064af421 BP |
1674 | } |
1675 | ||
e9e28be3 BP |
1676 | static void |
1677 | process_port_change(struct ofproto *ofproto, int error, char *devname) | |
1678 | { | |
1679 | if (error == ENOBUFS) { | |
1680 | reinit_ports(ofproto); | |
1681 | } else if (!error) { | |
1682 | update_port(ofproto, devname); | |
1683 | free(devname); | |
1684 | } | |
1685 | } | |
1686 | ||
11a574a7 JP |
1687 | int |
1688 | ofproto_type_run(const char *datapath_type) | |
1689 | { | |
1690 | const struct ofproto_class *class; | |
1691 | int error; | |
1692 | ||
1693 | datapath_type = ofproto_normalize_type(datapath_type); | |
1694 | class = ofproto_class_find__(datapath_type); | |
1695 | ||
1696 | error = class->type_run ? class->type_run(datapath_type) : 0; | |
1697 | if (error && error != EAGAIN) { | |
1698 | VLOG_ERR_RL(&rl, "%s: type_run failed (%s)", | |
10a89ef0 | 1699 | datapath_type, ovs_strerror(error)); |
11a574a7 JP |
1700 | } |
1701 | return error; | |
1702 | } | |
1703 | ||
11a574a7 JP |
1704 | void |
1705 | ofproto_type_wait(const char *datapath_type) | |
1706 | { | |
1707 | const struct ofproto_class *class; | |
1708 | ||
1709 | datapath_type = ofproto_normalize_type(datapath_type); | |
1710 | class = ofproto_class_find__(datapath_type); | |
1711 | ||
1712 | if (class->type_wait) { | |
1713 | class->type_wait(datapath_type); | |
1714 | } | |
1715 | } | |
1716 | ||
064af421 | 1717 | int |
abe529af | 1718 | ofproto_run(struct ofproto *p) |
064af421 | 1719 | { |
064af421 | 1720 | int error; |
da4a6191 | 1721 | uint64_t new_seq; |
064af421 | 1722 | |
abe529af | 1723 | error = p->ofproto_class->run(p); |
5fcc0d00 | 1724 | if (error && error != EAGAIN) { |
10a89ef0 | 1725 | VLOG_ERR_RL(&rl, "%s: run failed (%s)", p->name, ovs_strerror(error)); |
149f577a JG |
1726 | } |
1727 | ||
35412852 BP |
1728 | run_rule_executes(p); |
1729 | ||
448c2fa8 EJ |
1730 | /* Restore the eviction group heap invariant occasionally. */ |
1731 | if (p->eviction_group_timer < time_msec()) { | |
1732 | size_t i; | |
1733 | ||
1734 | p->eviction_group_timer = time_msec() + 1000; | |
1735 | ||
1736 | for (i = 0; i < p->n_tables; i++) { | |
1737 | struct oftable *table = &p->tables[i]; | |
1738 | struct eviction_group *evg; | |
448c2fa8 EJ |
1739 | struct rule *rule; |
1740 | ||
82c22d34 | 1741 | if (!table->eviction) { |
448c2fa8 EJ |
1742 | continue; |
1743 | } | |
1744 | ||
d79e3d70 | 1745 | if (table->n_flows > 100000) { |
1a9bb326 EJ |
1746 | static struct vlog_rate_limit count_rl = |
1747 | VLOG_RATE_LIMIT_INIT(1, 1); | |
1748 | VLOG_WARN_RL(&count_rl, "Table %"PRIuSIZE" has an excessive" | |
d79e3d70 | 1749 | " number of rules: %d", i, table->n_flows); |
1a9bb326 EJ |
1750 | } |
1751 | ||
15aaf599 | 1752 | ovs_mutex_lock(&ofproto_mutex); |
5f0476ce | 1753 | CLS_FOR_EACH (rule, cr, &table->cls) { |
6d56c1f1 K |
1754 | if (rule->idle_timeout || rule->hard_timeout) { |
1755 | if (!rule->eviction_group) { | |
1756 | eviction_group_add_rule(rule); | |
1757 | } else { | |
1758 | heap_raw_change(&rule->evg_node, | |
1759 | rule_eviction_priority(p, rule)); | |
1760 | } | |
448c2fa8 EJ |
1761 | } |
1762 | } | |
6d56c1f1 K |
1763 | |
1764 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { | |
1765 | heap_rebuild(&evg->rules); | |
1766 | } | |
15aaf599 | 1767 | ovs_mutex_unlock(&ofproto_mutex); |
448c2fa8 EJ |
1768 | } |
1769 | } | |
1770 | ||
5bf0e941 | 1771 | if (p->ofproto_class->port_poll) { |
7436ed80 BP |
1772 | char *devname; |
1773 | ||
5bf0e941 BP |
1774 | while ((error = p->ofproto_class->port_poll(p, &devname)) != EAGAIN) { |
1775 | process_port_change(p, error, devname); | |
064af421 | 1776 | } |
e9e28be3 | 1777 | } |
031d8bff | 1778 | |
da4a6191 JS |
1779 | new_seq = seq_read(connectivity_seq_get()); |
1780 | if (new_seq != p->change_seq) { | |
1781 | struct sset devnames; | |
1782 | const char *devname; | |
1783 | struct ofport *ofport; | |
1784 | ||
1785 | /* Update OpenFlow port status for any port whose netdev has changed. | |
1786 | * | |
1787 | * Refreshing a given 'ofport' can cause an arbitrary ofport to be | |
1788 | * destroyed, so it's not safe to update ports directly from the | |
1789 | * HMAP_FOR_EACH loop, or even to use HMAP_FOR_EACH_SAFE. Instead, we | |
1790 | * need this two-phase approach. */ | |
1791 | sset_init(&devnames); | |
1792 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
61501798 AW |
1793 | uint64_t port_change_seq; |
1794 | ||
1795 | port_change_seq = netdev_get_change_seq(ofport->netdev); | |
1796 | if (ofport->change_seq != port_change_seq) { | |
1797 | ofport->change_seq = port_change_seq; | |
1798 | sset_add(&devnames, netdev_get_name(ofport->netdev)); | |
1799 | } | |
031d8bff | 1800 | } |
da4a6191 JS |
1801 | SSET_FOR_EACH (devname, &devnames) { |
1802 | update_port(p, devname); | |
1803 | } | |
1804 | sset_destroy(&devnames); | |
1805 | ||
1806 | p->change_seq = new_seq; | |
064af421 BP |
1807 | } |
1808 | ||
834fe5cb | 1809 | connmgr_run(p->connmgr, handle_openflow); |
064af421 | 1810 | |
5fcc0d00 BP |
1811 | return error; |
1812 | } | |
1813 | ||
064af421 BP |
1814 | void |
1815 | ofproto_wait(struct ofproto *p) | |
1816 | { | |
abe529af | 1817 | p->ofproto_class->wait(p); |
5bf0e941 BP |
1818 | if (p->ofproto_class->port_poll_wait) { |
1819 | p->ofproto_class->port_poll_wait(p); | |
e7934396 | 1820 | } |
da4a6191 | 1821 | seq_wait(connectivity_seq_get(), p->change_seq); |
834fe5cb | 1822 | connmgr_wait(p->connmgr); |
064af421 BP |
1823 | } |
1824 | ||
064af421 BP |
1825 | bool |
1826 | ofproto_is_alive(const struct ofproto *p) | |
1827 | { | |
19a87e36 | 1828 | return connmgr_has_controllers(p->connmgr); |
064af421 BP |
1829 | } |
1830 | ||
0d085684 BP |
1831 | /* Adds some memory usage statistics for 'ofproto' into 'usage', for use with |
1832 | * memory_report(). */ | |
1833 | void | |
1834 | ofproto_get_memory_usage(const struct ofproto *ofproto, struct simap *usage) | |
1835 | { | |
1836 | const struct oftable *table; | |
1837 | unsigned int n_rules; | |
1838 | ||
1839 | simap_increase(usage, "ports", hmap_count(&ofproto->ports)); | |
15aaf599 | 1840 | |
0d085684 BP |
1841 | n_rules = 0; |
1842 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
d79e3d70 | 1843 | n_rules += table->n_flows; |
0d085684 BP |
1844 | } |
1845 | simap_increase(usage, "rules", n_rules); | |
1846 | ||
1847 | if (ofproto->ofproto_class->get_memory_usage) { | |
1848 | ofproto->ofproto_class->get_memory_usage(ofproto, usage); | |
1849 | } | |
1850 | ||
1851 | connmgr_get_memory_usage(ofproto->connmgr, usage); | |
1852 | } | |
1853 | ||
1c030aa5 EJ |
1854 | void |
1855 | ofproto_type_get_memory_usage(const char *datapath_type, struct simap *usage) | |
1856 | { | |
1857 | const struct ofproto_class *class; | |
1858 | ||
1859 | datapath_type = ofproto_normalize_type(datapath_type); | |
1860 | class = ofproto_class_find__(datapath_type); | |
1861 | ||
1862 | if (class && class->type_get_memory_usage) { | |
1863 | class->type_get_memory_usage(datapath_type, usage); | |
1864 | } | |
1865 | } | |
1866 | ||
bffc0589 | 1867 | void |
2cdcb898 | 1868 | ofproto_get_ofproto_controller_info(const struct ofproto *ofproto, |
bffc0589 AE |
1869 | struct shash *info) |
1870 | { | |
19a87e36 | 1871 | connmgr_get_controller_info(ofproto->connmgr, info); |
bffc0589 AE |
1872 | } |
1873 | ||
1874 | void | |
1875 | ofproto_free_ofproto_controller_info(struct shash *info) | |
1876 | { | |
72ba2ed3 | 1877 | connmgr_free_controller_info(info); |
bffc0589 AE |
1878 | } |
1879 | ||
b5827b24 BP |
1880 | /* Makes a deep copy of 'old' into 'port'. */ |
1881 | void | |
1882 | ofproto_port_clone(struct ofproto_port *port, const struct ofproto_port *old) | |
1883 | { | |
1884 | port->name = xstrdup(old->name); | |
1885 | port->type = xstrdup(old->type); | |
1886 | port->ofp_port = old->ofp_port; | |
1887 | } | |
1888 | ||
1889 | /* Frees memory allocated to members of 'ofproto_port'. | |
3a6ccc8c | 1890 | * |
b5827b24 BP |
1891 | * Do not call this function on an ofproto_port obtained from |
1892 | * ofproto_port_dump_next(): that function retains ownership of the data in the | |
1893 | * ofproto_port. */ | |
1894 | void | |
1895 | ofproto_port_destroy(struct ofproto_port *ofproto_port) | |
1896 | { | |
1897 | free(ofproto_port->name); | |
1898 | free(ofproto_port->type); | |
1899 | } | |
1900 | ||
b5827b24 | 1901 | /* Initializes 'dump' to begin dumping the ports in an ofproto. |
3a6ccc8c | 1902 | * |
b5827b24 BP |
1903 | * This function provides no status indication. An error status for the entire |
1904 | * dump operation is provided when it is completed by calling | |
1905 | * ofproto_port_dump_done(). | |
1906 | */ | |
1907 | void | |
1908 | ofproto_port_dump_start(struct ofproto_port_dump *dump, | |
1909 | const struct ofproto *ofproto) | |
1910 | { | |
abe529af BP |
1911 | dump->ofproto = ofproto; |
1912 | dump->error = ofproto->ofproto_class->port_dump_start(ofproto, | |
1913 | &dump->state); | |
b5827b24 BP |
1914 | } |
1915 | ||
1916 | /* Attempts to retrieve another port from 'dump', which must have been created | |
1917 | * with ofproto_port_dump_start(). On success, stores a new ofproto_port into | |
1918 | * 'port' and returns true. On failure, returns false. | |
1919 | * | |
1920 | * Failure might indicate an actual error or merely that the last port has been | |
1921 | * dumped. An error status for the entire dump operation is provided when it | |
1922 | * is completed by calling ofproto_port_dump_done(). | |
1923 | * | |
1924 | * The ofproto owns the data stored in 'port'. It will remain valid until at | |
1925 | * least the next time 'dump' is passed to ofproto_port_dump_next() or | |
1926 | * ofproto_port_dump_done(). */ | |
1927 | bool | |
1928 | ofproto_port_dump_next(struct ofproto_port_dump *dump, | |
1929 | struct ofproto_port *port) | |
1930 | { | |
abe529af BP |
1931 | const struct ofproto *ofproto = dump->ofproto; |
1932 | ||
1933 | if (dump->error) { | |
1934 | return false; | |
1935 | } | |
b5827b24 | 1936 | |
abe529af BP |
1937 | dump->error = ofproto->ofproto_class->port_dump_next(ofproto, dump->state, |
1938 | port); | |
1939 | if (dump->error) { | |
1940 | ofproto->ofproto_class->port_dump_done(ofproto, dump->state); | |
1941 | return false; | |
b5827b24 | 1942 | } |
abe529af | 1943 | return true; |
b5827b24 BP |
1944 | } |
1945 | ||
1946 | /* Completes port table dump operation 'dump', which must have been created | |
1947 | * with ofproto_port_dump_start(). Returns 0 if the dump operation was | |
1948 | * error-free, otherwise a positive errno value describing the problem. */ | |
3a6ccc8c | 1949 | int |
b5827b24 | 1950 | ofproto_port_dump_done(struct ofproto_port_dump *dump) |
3a6ccc8c | 1951 | { |
abe529af BP |
1952 | const struct ofproto *ofproto = dump->ofproto; |
1953 | if (!dump->error) { | |
1954 | dump->error = ofproto->ofproto_class->port_dump_done(ofproto, | |
1955 | dump->state); | |
1956 | } | |
1957 | return dump->error == EOF ? 0 : dump->error; | |
b5827b24 BP |
1958 | } |
1959 | ||
0aeaabc8 JP |
1960 | /* Returns the type to pass to netdev_open() when a datapath of type |
1961 | * 'datapath_type' has a port of type 'port_type', for a few special | |
1962 | * cases when a netdev type differs from a port type. For example, when | |
1963 | * using the userspace datapath, a port of type "internal" needs to be | |
1964 | * opened as "tap". | |
1965 | * | |
1966 | * Returns either 'type' itself or a string literal, which must not be | |
1967 | * freed. */ | |
1968 | const char * | |
1969 | ofproto_port_open_type(const char *datapath_type, const char *port_type) | |
1970 | { | |
1971 | const struct ofproto_class *class; | |
1972 | ||
1973 | datapath_type = ofproto_normalize_type(datapath_type); | |
1974 | class = ofproto_class_find__(datapath_type); | |
1975 | if (!class) { | |
1976 | return port_type; | |
1977 | } | |
1978 | ||
1979 | return (class->port_open_type | |
1980 | ? class->port_open_type(datapath_type, port_type) | |
1981 | : port_type); | |
1982 | } | |
1983 | ||
81816a5f JP |
1984 | /* Attempts to add 'netdev' as a port on 'ofproto'. If 'ofp_portp' is |
1985 | * non-null and '*ofp_portp' is not OFPP_NONE, attempts to use that as | |
1986 | * the port's OpenFlow port number. | |
1987 | * | |
1988 | * If successful, returns 0 and sets '*ofp_portp' to the new port's | |
1989 | * OpenFlow port number (if 'ofp_portp' is non-null). On failure, | |
1990 | * returns a positive errno value and sets '*ofp_portp' to OFPP_NONE (if | |
1991 | * 'ofp_portp' is non-null). */ | |
b5827b24 BP |
1992 | int |
1993 | ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev, | |
4e022ec0 | 1994 | ofp_port_t *ofp_portp) |
b5827b24 | 1995 | { |
4e022ec0 | 1996 | ofp_port_t ofp_port = ofp_portp ? *ofp_portp : OFPP_NONE; |
3a6ccc8c BP |
1997 | int error; |
1998 | ||
e1b1d06a | 1999 | error = ofproto->ofproto_class->port_add(ofproto, netdev); |
1fa24dea | 2000 | if (!error) { |
e1b1d06a JP |
2001 | const char *netdev_name = netdev_get_name(netdev); |
2002 | ||
4e022ec0 AW |
2003 | simap_put(&ofproto->ofp_requests, netdev_name, |
2004 | ofp_to_u16(ofp_port)); | |
01c77073 | 2005 | error = update_port(ofproto, netdev_name); |
1fa24dea | 2006 | } |
b5827b24 | 2007 | if (ofp_portp) { |
17f69db5 BP |
2008 | *ofp_portp = OFPP_NONE; |
2009 | if (!error) { | |
2010 | struct ofproto_port ofproto_port; | |
2011 | ||
2012 | error = ofproto_port_query_by_name(ofproto, | |
2013 | netdev_get_name(netdev), | |
2014 | &ofproto_port); | |
2015 | if (!error) { | |
2016 | *ofp_portp = ofproto_port.ofp_port; | |
2017 | ofproto_port_destroy(&ofproto_port); | |
2018 | } | |
2019 | } | |
3a6ccc8c BP |
2020 | } |
2021 | return error; | |
2022 | } | |
2023 | ||
b5827b24 BP |
2024 | /* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and |
2025 | * initializes '*port' appropriately; on failure, returns a positive errno | |
2026 | * value. | |
2027 | * | |
abe529af | 2028 | * The caller owns the data in 'ofproto_port' and must free it with |
b5827b24 BP |
2029 | * ofproto_port_destroy() when it is no longer needed. */ |
2030 | int | |
2031 | ofproto_port_query_by_name(const struct ofproto *ofproto, const char *devname, | |
2032 | struct ofproto_port *port) | |
a4e2e1f2 | 2033 | { |
b5827b24 BP |
2034 | int error; |
2035 | ||
abe529af BP |
2036 | error = ofproto->ofproto_class->port_query_by_name(ofproto, devname, port); |
2037 | if (error) { | |
2038 | memset(port, 0, sizeof *port); | |
b5827b24 BP |
2039 | } |
2040 | return error; | |
a4e2e1f2 EJ |
2041 | } |
2042 | ||
b5827b24 | 2043 | /* Deletes port number 'ofp_port' from the datapath for 'ofproto'. |
3a6ccc8c | 2044 | * Returns 0 if successful, otherwise a positive errno. */ |
064af421 | 2045 | int |
4e022ec0 | 2046 | ofproto_port_del(struct ofproto *ofproto, ofp_port_t ofp_port) |
064af421 | 2047 | { |
abe529af | 2048 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1264ec95 | 2049 | const char *name = ofport ? netdev_get_name(ofport->netdev) : "<unknown>"; |
e1b1d06a | 2050 | struct simap_node *ofp_request_node; |
3cf10406 | 2051 | int error; |
cdee00fd | 2052 | |
e1b1d06a JP |
2053 | ofp_request_node = simap_find(&ofproto->ofp_requests, name); |
2054 | if (ofp_request_node) { | |
2055 | simap_delete(&ofproto->ofp_requests, ofp_request_node); | |
2056 | } | |
2057 | ||
abe529af | 2058 | error = ofproto->ofproto_class->port_del(ofproto, ofp_port); |
892815f5 | 2059 | if (!error && ofport) { |
1264ec95 BP |
2060 | /* 'name' is the netdev's name and update_port() is going to close the |
2061 | * netdev. Just in case update_port() refers to 'name' after it | |
3a6ccc8c BP |
2062 | * destroys 'ofport', make a copy of it around the update_port() |
2063 | * call. */ | |
2064 | char *devname = xstrdup(name); | |
2065 | update_port(ofproto, devname); | |
2066 | free(devname); | |
3cf10406 BP |
2067 | } |
2068 | return error; | |
064af421 BP |
2069 | } |
2070 | ||
91364d18 IM |
2071 | /* Refreshes datapath configuration of port number 'ofp_port' in 'ofproto'. |
2072 | * | |
2073 | * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */ | |
2074 | void | |
2075 | ofproto_port_set_config(struct ofproto *ofproto, ofp_port_t ofp_port, | |
2076 | const struct smap *cfg) | |
2077 | { | |
2078 | struct ofport *ofport; | |
2079 | int error; | |
2080 | ||
2081 | ofport = ofproto_get_port(ofproto, ofp_port); | |
2082 | if (!ofport) { | |
2083 | VLOG_WARN("%s: cannot configure datapath on nonexistent port %"PRIu16, | |
2084 | ofproto->name, ofp_port); | |
2085 | return; | |
2086 | } | |
2087 | ||
2088 | error = (ofproto->ofproto_class->port_set_config | |
2089 | ? ofproto->ofproto_class->port_set_config(ofport, cfg) | |
2090 | : EOPNOTSUPP); | |
2091 | if (error) { | |
2092 | VLOG_WARN("%s: datapath configuration on port %"PRIu16 | |
2093 | " (%s) failed (%s)", | |
2094 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
2095 | ovs_strerror(error)); | |
2096 | } | |
2097 | } | |
2098 | ||
2099 | ||
276f6518 SH |
2100 | static void |
2101 | flow_mod_init(struct ofputil_flow_mod *fm, | |
eb391b76 | 2102 | const struct match *match, int priority, |
276f6518 SH |
2103 | const struct ofpact *ofpacts, size_t ofpacts_len, |
2104 | enum ofp_flow_mod_command command) | |
2105 | { | |
39cc5c4a BP |
2106 | *fm = (struct ofputil_flow_mod) { |
2107 | .match = *match, | |
2108 | .priority = priority, | |
2109 | .table_id = 0, | |
2110 | .command = command, | |
2111 | .buffer_id = UINT32_MAX, | |
2112 | .out_port = OFPP_ANY, | |
2113 | .out_group = OFPG_ANY, | |
2114 | .ofpacts = CONST_CAST(struct ofpact *, ofpacts), | |
2115 | .ofpacts_len = ofpacts_len, | |
39cc5c4a | 2116 | }; |
276f6518 SH |
2117 | } |
2118 | ||
97f63e57 BP |
2119 | static int |
2120 | simple_flow_mod(struct ofproto *ofproto, | |
eb391b76 | 2121 | const struct match *match, int priority, |
97f63e57 BP |
2122 | const struct ofpact *ofpacts, size_t ofpacts_len, |
2123 | enum ofp_flow_mod_command command) | |
2124 | { | |
8be00367 | 2125 | struct ofproto_flow_mod ofm; |
97f63e57 | 2126 | |
8be00367 | 2127 | flow_mod_init(&ofm.fm, match, priority, ofpacts, ofpacts_len, command); |
15aaf599 | 2128 | |
8be00367 | 2129 | return handle_flow_mod__(ofproto, &ofm, NULL); |
97f63e57 BP |
2130 | } |
2131 | ||
6c1491fb | 2132 | /* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and |
fa8b054f BP |
2133 | * performs the 'n_actions' actions in 'actions'. The new flow will not |
2134 | * timeout. | |
2135 | * | |
2136 | * If cls_rule->priority is in the range of priorities supported by OpenFlow | |
2137 | * (0...65535, inclusive) then the flow will be visible to OpenFlow | |
2138 | * controllers; otherwise, it will be hidden. | |
2139 | * | |
f25d0cf3 | 2140 | * The caller retains ownership of 'cls_rule' and 'ofpacts'. |
6c1491fb BP |
2141 | * |
2142 | * This is a helper function for in-band control and fail-open. */ | |
064af421 | 2143 | void |
81a76618 | 2144 | ofproto_add_flow(struct ofproto *ofproto, const struct match *match, |
eb391b76 | 2145 | int priority, |
f25d0cf3 | 2146 | const struct ofpact *ofpacts, size_t ofpacts_len) |
15aaf599 | 2147 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 2148 | { |
7ee20df1 | 2149 | const struct rule *rule; |
6f00e29b | 2150 | bool must_add; |
7ee20df1 | 2151 | |
97f63e57 BP |
2152 | /* First do a cheap check whether the rule we're looking for already exists |
2153 | * with the actions that we want. If it does, then we're done. */ | |
81a76618 | 2154 | rule = rule_from_cls_rule(classifier_find_match_exactly( |
2b7b1427 | 2155 | &ofproto->tables[0].cls, match, priority, |
44e0c35d | 2156 | OVS_VERSION_MAX)); |
6f00e29b | 2157 | if (rule) { |
dc723c44 | 2158 | const struct rule_actions *actions = rule_get_actions(rule); |
06a0f3e2 | 2159 | must_add = !ofpacts_equal(actions->ofpacts, actions->ofpacts_len, |
6f00e29b | 2160 | ofpacts, ofpacts_len); |
6f00e29b BP |
2161 | } else { |
2162 | must_add = true; | |
2163 | } | |
97f63e57 BP |
2164 | |
2165 | /* If there's no such rule or the rule doesn't have the actions we want, | |
2166 | * fall back to a executing a full flow mod. We can't optimize this at | |
2167 | * all because we didn't take enough locks above to ensure that the flow | |
2168 | * table didn't already change beneath us. */ | |
6f00e29b | 2169 | if (must_add) { |
97f63e57 BP |
2170 | simple_flow_mod(ofproto, match, priority, ofpacts, ofpacts_len, |
2171 | OFPFC_MODIFY_STRICT); | |
7ee20df1 | 2172 | } |
064af421 BP |
2173 | } |
2174 | ||
d51c8b71 JR |
2175 | /* Executes the flow modification specified in 'fm'. Returns 0 on success, or |
2176 | * an OFPERR_* OpenFlow error code on failure. | |
75a75043 | 2177 | * |
1b63b91e BP |
2178 | * This is a helper function for in-band control and fail-open and the "learn" |
2179 | * action. */ | |
d51c8b71 | 2180 | enum ofperr |
8be00367 | 2181 | ofproto_flow_mod(struct ofproto *ofproto, struct ofproto_flow_mod *ofm) |
15aaf599 | 2182 | OVS_EXCLUDED(ofproto_mutex) |
75a75043 | 2183 | { |
8be00367 JR |
2184 | struct ofputil_flow_mod *fm = &ofm->fm; |
2185 | ||
b90d6ee5 JR |
2186 | /* Optimize for the most common case of a repeated learn action. |
2187 | * If an identical flow already exists we only need to update its | |
2188 | * 'modified' time. */ | |
2189 | if (fm->command == OFPFC_MODIFY_STRICT && fm->table_id != OFPTT_ALL | |
2190 | && !(fm->flags & OFPUTIL_FF_RESET_COUNTS)) { | |
2191 | struct oftable *table = &ofproto->tables[fm->table_id]; | |
b90d6ee5 JR |
2192 | struct rule *rule; |
2193 | bool done = false; | |
2194 | ||
2b7b1427 | 2195 | rule = rule_from_cls_rule(classifier_find_match_exactly( |
39c94593 | 2196 | &table->cls, &fm->match, fm->priority, |
44e0c35d | 2197 | OVS_VERSION_MAX)); |
b90d6ee5 JR |
2198 | if (rule) { |
2199 | /* Reading many of the rule fields and writing on 'modified' | |
2200 | * requires the rule->mutex. Also, rule->actions may change | |
2201 | * if rule->mutex is not held. */ | |
06a0f3e2 BP |
2202 | const struct rule_actions *actions; |
2203 | ||
b90d6ee5 | 2204 | ovs_mutex_lock(&rule->mutex); |
06a0f3e2 | 2205 | actions = rule_get_actions(rule); |
b90d6ee5 JR |
2206 | if (rule->idle_timeout == fm->idle_timeout |
2207 | && rule->hard_timeout == fm->hard_timeout | |
ca26eb44 | 2208 | && rule->importance == fm->importance |
b90d6ee5 JR |
2209 | && rule->flags == (fm->flags & OFPUTIL_FF_STATE) |
2210 | && (!fm->modify_cookie || (fm->new_cookie == rule->flow_cookie)) | |
2211 | && ofpacts_equal(fm->ofpacts, fm->ofpacts_len, | |
06a0f3e2 | 2212 | actions->ofpacts, actions->ofpacts_len)) { |
b90d6ee5 JR |
2213 | /* Rule already exists and need not change, only update the |
2214 | modified timestamp. */ | |
2215 | rule->modified = time_msec(); | |
2216 | done = true; | |
2217 | } | |
2218 | ovs_mutex_unlock(&rule->mutex); | |
2219 | } | |
b90d6ee5 JR |
2220 | |
2221 | if (done) { | |
2222 | return 0; | |
2223 | } | |
2224 | } | |
2225 | ||
8be00367 | 2226 | return handle_flow_mod__(ofproto, ofm, NULL); |
75a75043 BP |
2227 | } |
2228 | ||
6c1491fb BP |
2229 | /* Searches for a rule with matching criteria exactly equal to 'target' in |
2230 | * ofproto's table 0 and, if it finds one, deletes it. | |
2231 | * | |
2232 | * This is a helper function for in-band control and fail-open. */ | |
b20f4073 | 2233 | void |
81a76618 | 2234 | ofproto_delete_flow(struct ofproto *ofproto, |
eb391b76 | 2235 | const struct match *target, int priority) |
15aaf599 | 2236 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 2237 | { |
8037acb4 | 2238 | struct classifier *cls = &ofproto->tables[0].cls; |
064af421 BP |
2239 | struct rule *rule; |
2240 | ||
97f63e57 BP |
2241 | /* First do a cheap check whether the rule we're looking for has already |
2242 | * been deleted. If so, then we're done. */ | |
39c94593 | 2243 | rule = rule_from_cls_rule(classifier_find_match_exactly( |
44e0c35d | 2244 | cls, target, priority, OVS_VERSION_MAX)); |
834fe5cb BP |
2245 | if (!rule) { |
2246 | return; | |
bcf84111 | 2247 | } |
834fe5cb BP |
2248 | |
2249 | /* Execute a flow mod. We can't optimize this at all because we didn't | |
2250 | * take enough locks above to ensure that the flow table didn't already | |
2251 | * change beneath us. */ | |
2252 | simple_flow_mod(ofproto, target, priority, NULL, 0, OFPFC_DELETE_STRICT); | |
142e1f5c BP |
2253 | } |
2254 | ||
834fe5cb BP |
2255 | /* Delete all of the flows from all of ofproto's flow tables, then reintroduce |
2256 | * the flows required by in-band control and fail-open. */ | |
142e1f5c BP |
2257 | void |
2258 | ofproto_flush_flows(struct ofproto *ofproto) | |
2259 | { | |
7ee20df1 | 2260 | COVERAGE_INC(ofproto_flush); |
834fe5cb BP |
2261 | ofproto_flush__(ofproto); |
2262 | connmgr_flushed(ofproto->connmgr); | |
064af421 BP |
2263 | } |
2264 | \f | |
2265 | static void | |
2266 | reinit_ports(struct ofproto *p) | |
2267 | { | |
abe529af | 2268 | struct ofproto_port_dump dump; |
b3c01ed3 | 2269 | struct sset devnames; |
064af421 | 2270 | struct ofport *ofport; |
abe529af | 2271 | struct ofproto_port ofproto_port; |
b3c01ed3 | 2272 | const char *devname; |
064af421 | 2273 | |
898bf89d JP |
2274 | COVERAGE_INC(ofproto_reinit_ports); |
2275 | ||
b3c01ed3 | 2276 | sset_init(&devnames); |
4e8e4213 | 2277 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { |
1264ec95 | 2278 | sset_add(&devnames, netdev_get_name(ofport->netdev)); |
064af421 | 2279 | } |
abe529af BP |
2280 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { |
2281 | sset_add(&devnames, ofproto_port.name); | |
064af421 | 2282 | } |
064af421 | 2283 | |
b3c01ed3 BP |
2284 | SSET_FOR_EACH (devname, &devnames) { |
2285 | update_port(p, devname); | |
064af421 | 2286 | } |
b3c01ed3 | 2287 | sset_destroy(&devnames); |
064af421 BP |
2288 | } |
2289 | ||
4e022ec0 | 2290 | static ofp_port_t |
e1b1d06a JP |
2291 | alloc_ofp_port(struct ofproto *ofproto, const char *netdev_name) |
2292 | { | |
4e022ec0 | 2293 | uint16_t port_idx; |
e1b1d06a | 2294 | |
4e022ec0 | 2295 | port_idx = simap_get(&ofproto->ofp_requests, netdev_name); |
430dbb14 | 2296 | port_idx = port_idx ? port_idx : UINT16_MAX; |
4e022ec0 | 2297 | |
430dbb14 | 2298 | if (port_idx >= ofproto->max_ports |
fdcea803 GS |
2299 | || ofport_get_usage(ofproto, u16_to_ofp(port_idx)) == LLONG_MAX) { |
2300 | uint16_t lru_ofport = 0, end_port_no = ofproto->alloc_port_no; | |
2301 | long long int last_used_at, lru = LLONG_MAX; | |
e1b1d06a | 2302 | |
e1b1d06a JP |
2303 | /* Search for a free OpenFlow port number. We try not to |
2304 | * immediately reuse them to prevent problems due to old | |
484c8355 BP |
2305 | * flows. |
2306 | * | |
2307 | * We limit the automatically assigned port numbers to the lower half | |
2308 | * of the port range, to reserve the upper half for assignment by | |
2309 | * controllers. */ | |
6033d9d9 | 2310 | for (;;) { |
484c8355 | 2311 | if (++ofproto->alloc_port_no >= MIN(ofproto->max_ports, 32768)) { |
fdcea803 | 2312 | ofproto->alloc_port_no = 1; |
6033d9d9 | 2313 | } |
fdcea803 GS |
2314 | last_used_at = ofport_get_usage(ofproto, |
2315 | u16_to_ofp(ofproto->alloc_port_no)); | |
2316 | if (!last_used_at) { | |
430dbb14 | 2317 | port_idx = ofproto->alloc_port_no; |
6033d9d9 | 2318 | break; |
865b26a4 GS |
2319 | } else if ( last_used_at < time_msec() - 60*60*1000) { |
2320 | /* If the port with ofport 'ofproto->alloc_port_no' was deleted | |
2321 | * more than an hour ago, consider it usable. */ | |
2322 | ofport_remove_usage(ofproto, | |
2323 | u16_to_ofp(ofproto->alloc_port_no)); | |
2324 | port_idx = ofproto->alloc_port_no; | |
2325 | break; | |
fdcea803 GS |
2326 | } else if (last_used_at < lru) { |
2327 | lru = last_used_at; | |
2328 | lru_ofport = ofproto->alloc_port_no; | |
e1b1d06a | 2329 | } |
fdcea803 | 2330 | |
430dbb14 | 2331 | if (ofproto->alloc_port_no == end_port_no) { |
fdcea803 GS |
2332 | if (lru_ofport) { |
2333 | port_idx = lru_ofport; | |
2334 | break; | |
2335 | } | |
6033d9d9 | 2336 | return OFPP_NONE; |
e1b1d06a JP |
2337 | } |
2338 | } | |
2339 | } | |
fdcea803 | 2340 | ofport_set_usage(ofproto, u16_to_ofp(port_idx), LLONG_MAX); |
4e022ec0 | 2341 | return u16_to_ofp(port_idx); |
e1b1d06a JP |
2342 | } |
2343 | ||
2344 | static void | |
fdcea803 | 2345 | dealloc_ofp_port(struct ofproto *ofproto, ofp_port_t ofp_port) |
e1b1d06a | 2346 | { |
430dbb14 | 2347 | if (ofp_to_u16(ofp_port) < ofproto->max_ports) { |
fdcea803 | 2348 | ofport_set_usage(ofproto, ofp_port, time_msec()); |
40fa9417 | 2349 | } |
e1b1d06a JP |
2350 | } |
2351 | ||
fbfa2911 BP |
2352 | /* Opens and returns a netdev for 'ofproto_port' in 'ofproto', or a null |
2353 | * pointer if the netdev cannot be opened. On success, also fills in | |
d7d92203 | 2354 | * '*pp'. */ |
b33951b8 | 2355 | static struct netdev * |
e1b1d06a JP |
2356 | ofport_open(struct ofproto *ofproto, |
2357 | struct ofproto_port *ofproto_port, | |
9e1fd49b | 2358 | struct ofputil_phy_port *pp) |
064af421 BP |
2359 | { |
2360 | enum netdev_flags flags; | |
064af421 | 2361 | struct netdev *netdev; |
064af421 BP |
2362 | int error; |
2363 | ||
18812dff | 2364 | error = netdev_open(ofproto_port->name, ofproto_port->type, &netdev); |
064af421 | 2365 | if (error) { |
fbfa2911 | 2366 | VLOG_WARN_RL(&rl, "%s: ignoring port %s (%"PRIu16") because netdev %s " |
064af421 | 2367 | "cannot be opened (%s)", |
fbfa2911 | 2368 | ofproto->name, |
abe529af | 2369 | ofproto_port->name, ofproto_port->ofp_port, |
10a89ef0 | 2370 | ofproto_port->name, ovs_strerror(error)); |
064af421 BP |
2371 | return NULL; |
2372 | } | |
2373 | ||
e1b1d06a JP |
2374 | if (ofproto_port->ofp_port == OFPP_NONE) { |
2375 | if (!strcmp(ofproto->name, ofproto_port->name)) { | |
2376 | ofproto_port->ofp_port = OFPP_LOCAL; | |
2377 | } else { | |
2378 | ofproto_port->ofp_port = alloc_ofp_port(ofproto, | |
2379 | ofproto_port->name); | |
2380 | } | |
2381 | } | |
9e1fd49b | 2382 | pp->port_no = ofproto_port->ofp_port; |
74ff3298 | 2383 | netdev_get_etheraddr(netdev, &pp->hw_addr); |
9e1fd49b | 2384 | ovs_strlcpy(pp->name, ofproto_port->name, sizeof pp->name); |
064af421 | 2385 | netdev_get_flags(netdev, &flags); |
9e1fd49b BP |
2386 | pp->config = flags & NETDEV_UP ? 0 : OFPUTIL_PC_PORT_DOWN; |
2387 | pp->state = netdev_get_carrier(netdev) ? 0 : OFPUTIL_PS_LINK_DOWN; | |
2388 | netdev_get_features(netdev, &pp->curr, &pp->advertised, | |
2389 | &pp->supported, &pp->peer); | |
cd65125d BP |
2390 | pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000; |
2391 | pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000; | |
118c4676 | 2392 | |
b33951b8 | 2393 | return netdev; |
064af421 BP |
2394 | } |
2395 | ||
b33951b8 | 2396 | /* Returns true if most fields of 'a' and 'b' are equal. Differences in name, |
d7d92203 | 2397 | * port number, and 'config' bits other than OFPUTIL_PC_PORT_DOWN are |
b33951b8 BP |
2398 | * disregarded. */ |
2399 | static bool | |
9e1fd49b BP |
2400 | ofport_equal(const struct ofputil_phy_port *a, |
2401 | const struct ofputil_phy_port *b) | |
064af421 | 2402 | { |
9e1fd49b | 2403 | return (eth_addr_equals(a->hw_addr, b->hw_addr) |
064af421 | 2404 | && a->state == b->state |
9e1fd49b | 2405 | && !((a->config ^ b->config) & OFPUTIL_PC_PORT_DOWN) |
064af421 BP |
2406 | && a->curr == b->curr |
2407 | && a->advertised == b->advertised | |
2408 | && a->supported == b->supported | |
9e1fd49b BP |
2409 | && a->peer == b->peer |
2410 | && a->curr_speed == b->curr_speed | |
2411 | && a->max_speed == b->max_speed); | |
064af421 BP |
2412 | } |
2413 | ||
b33951b8 BP |
2414 | /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'. |
2415 | * The caller must ensure that 'p' does not have a conflicting ofport (that is, | |
2416 | * one with the same name or port number). */ | |
01c77073 | 2417 | static int |
b33951b8 | 2418 | ofport_install(struct ofproto *p, |
9e1fd49b | 2419 | struct netdev *netdev, const struct ofputil_phy_port *pp) |
064af421 | 2420 | { |
b33951b8 BP |
2421 | const char *netdev_name = netdev_get_name(netdev); |
2422 | struct ofport *ofport; | |
abe529af | 2423 | int error; |
72b06300 | 2424 | |
b33951b8 | 2425 | /* Create ofport. */ |
abe529af BP |
2426 | ofport = p->ofproto_class->port_alloc(); |
2427 | if (!ofport) { | |
2428 | error = ENOMEM; | |
2429 | goto error; | |
2430 | } | |
0f7d71a5 | 2431 | ofport->ofproto = p; |
b33951b8 | 2432 | ofport->netdev = netdev; |
61501798 | 2433 | ofport->change_seq = netdev_get_change_seq(netdev); |
9e1fd49b BP |
2434 | ofport->pp = *pp; |
2435 | ofport->ofp_port = pp->port_no; | |
65e0be10 | 2436 | ofport->created = time_msec(); |
b33951b8 BP |
2437 | |
2438 | /* Add port to 'p'. */ | |
4e022ec0 | 2439 | hmap_insert(&p->ports, &ofport->hmap_node, |
f9c0c3ec | 2440 | hash_ofp_port(ofport->ofp_port)); |
72b06300 | 2441 | shash_add(&p->port_by_name, netdev_name, ofport); |
abe529af | 2442 | |
ada3428f | 2443 | update_mtu(p, ofport); |
9197df76 | 2444 | |
abe529af BP |
2445 | /* Let the ofproto_class initialize its private data. */ |
2446 | error = p->ofproto_class->port_construct(ofport); | |
2447 | if (error) { | |
2448 | goto error; | |
2449 | } | |
2a6f78e0 | 2450 | connmgr_send_port_status(p->connmgr, NULL, pp, OFPPR_ADD); |
01c77073 | 2451 | return 0; |
abe529af BP |
2452 | |
2453 | error: | |
2454 | VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)", | |
10a89ef0 | 2455 | p->name, netdev_name, ovs_strerror(error)); |
abe529af BP |
2456 | if (ofport) { |
2457 | ofport_destroy__(ofport); | |
2458 | } else { | |
2459 | netdev_close(netdev); | |
72b06300 | 2460 | } |
01c77073 | 2461 | return error; |
064af421 BP |
2462 | } |
2463 | ||
b33951b8 | 2464 | /* Removes 'ofport' from 'p' and destroys it. */ |
064af421 | 2465 | static void |
0f7d71a5 | 2466 | ofport_remove(struct ofport *ofport) |
064af421 | 2467 | { |
0670b5d0 | 2468 | struct ofproto *p = ofport->ofproto; |
2469 | bool is_internal = ofport_is_internal(ofport); | |
2470 | ||
2a6f78e0 | 2471 | connmgr_send_port_status(ofport->ofproto->connmgr, NULL, &ofport->pp, |
fa066f01 | 2472 | OFPPR_DELETE); |
9aad5a5a | 2473 | ofport_destroy(ofport, true); |
0670b5d0 | 2474 | if (!is_internal) { |
2475 | update_mtu_ofproto(p); | |
2476 | } | |
b33951b8 BP |
2477 | } |
2478 | ||
2479 | /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and | |
2480 | * destroys it. */ | |
2481 | static void | |
2482 | ofport_remove_with_name(struct ofproto *ofproto, const char *name) | |
2483 | { | |
2484 | struct ofport *port = shash_find_data(&ofproto->port_by_name, name); | |
2485 | if (port) { | |
0f7d71a5 | 2486 | ofport_remove(port); |
b33951b8 BP |
2487 | } |
2488 | } | |
2489 | ||
9e1fd49b | 2490 | /* Updates 'port' with new 'pp' description. |
b33951b8 BP |
2491 | * |
2492 | * Does not handle a name or port number change. The caller must implement | |
2493 | * such a change as a delete followed by an add. */ | |
2494 | static void | |
9e1fd49b | 2495 | ofport_modified(struct ofport *port, struct ofputil_phy_port *pp) |
b33951b8 | 2496 | { |
74ff3298 | 2497 | port->pp.hw_addr = pp->hw_addr; |
9e1fd49b BP |
2498 | port->pp.config = ((port->pp.config & ~OFPUTIL_PC_PORT_DOWN) |
2499 | | (pp->config & OFPUTIL_PC_PORT_DOWN)); | |
53fd5c7c BP |
2500 | port->pp.state = ((port->pp.state & ~OFPUTIL_PS_LINK_DOWN) |
2501 | | (pp->state & OFPUTIL_PS_LINK_DOWN)); | |
9e1fd49b BP |
2502 | port->pp.curr = pp->curr; |
2503 | port->pp.advertised = pp->advertised; | |
2504 | port->pp.supported = pp->supported; | |
2505 | port->pp.peer = pp->peer; | |
2506 | port->pp.curr_speed = pp->curr_speed; | |
2507 | port->pp.max_speed = pp->max_speed; | |
b33951b8 | 2508 | |
2a6f78e0 BP |
2509 | connmgr_send_port_status(port->ofproto->connmgr, NULL, |
2510 | &port->pp, OFPPR_MODIFY); | |
064af421 BP |
2511 | } |
2512 | ||
5a2dfd47 JP |
2513 | /* Update OpenFlow 'state' in 'port' and notify controller. */ |
2514 | void | |
9e1fd49b | 2515 | ofproto_port_set_state(struct ofport *port, enum ofputil_port_state state) |
5a2dfd47 | 2516 | { |
9e1fd49b BP |
2517 | if (port->pp.state != state) { |
2518 | port->pp.state = state; | |
2a6f78e0 BP |
2519 | connmgr_send_port_status(port->ofproto->connmgr, NULL, |
2520 | &port->pp, OFPPR_MODIFY); | |
5a2dfd47 JP |
2521 | } |
2522 | } | |
2523 | ||
abe529af | 2524 | void |
4e022ec0 | 2525 | ofproto_port_unregister(struct ofproto *ofproto, ofp_port_t ofp_port) |
e7934396 | 2526 | { |
abe529af BP |
2527 | struct ofport *port = ofproto_get_port(ofproto, ofp_port); |
2528 | if (port) { | |
b308140a JP |
2529 | if (port->ofproto->ofproto_class->set_stp_port) { |
2530 | port->ofproto->ofproto_class->set_stp_port(port, NULL); | |
2531 | } | |
9efd308e DV |
2532 | if (port->ofproto->ofproto_class->set_rstp_port) { |
2533 | port->ofproto->ofproto_class->set_rstp_port(port, NULL); | |
2534 | } | |
abe529af | 2535 | if (port->ofproto->ofproto_class->set_cfm) { |
a5610457 | 2536 | port->ofproto->ofproto_class->set_cfm(port, NULL); |
abe529af BP |
2537 | } |
2538 | if (port->ofproto->ofproto_class->bundle_remove) { | |
2539 | port->ofproto->ofproto_class->bundle_remove(port); | |
e7934396 BP |
2540 | } |
2541 | } | |
2542 | } | |
2543 | ||
2544 | static void | |
abe529af | 2545 | ofport_destroy__(struct ofport *port) |
e7934396 | 2546 | { |
abe529af BP |
2547 | struct ofproto *ofproto = port->ofproto; |
2548 | const char *name = netdev_get_name(port->netdev); | |
fa066f01 | 2549 | |
abe529af BP |
2550 | hmap_remove(&ofproto->ports, &port->hmap_node); |
2551 | shash_delete(&ofproto->port_by_name, | |
2552 | shash_find(&ofproto->port_by_name, name)); | |
fa066f01 | 2553 | |
abe529af BP |
2554 | netdev_close(port->netdev); |
2555 | ofproto->ofproto_class->port_dealloc(port); | |
e7934396 BP |
2556 | } |
2557 | ||
064af421 | 2558 | static void |
9aad5a5a | 2559 | ofport_destroy(struct ofport *port, bool del) |
064af421 | 2560 | { |
fa066f01 | 2561 | if (port) { |
e1b1d06a | 2562 | dealloc_ofp_port(port->ofproto, port->ofp_port); |
9aad5a5a | 2563 | port->ofproto->ofproto_class->port_destruct(port, del); |
abe529af BP |
2564 | ofport_destroy__(port); |
2565 | } | |
064af421 BP |
2566 | } |
2567 | ||
abe529af | 2568 | struct ofport * |
4e022ec0 | 2569 | ofproto_get_port(const struct ofproto *ofproto, ofp_port_t ofp_port) |
ca0f572c BP |
2570 | { |
2571 | struct ofport *port; | |
2572 | ||
f9c0c3ec | 2573 | HMAP_FOR_EACH_IN_BUCKET (port, hmap_node, hash_ofp_port(ofp_port), |
4e022ec0 | 2574 | &ofproto->ports) { |
abe529af | 2575 | if (port->ofp_port == ofp_port) { |
ca0f572c BP |
2576 | return port; |
2577 | } | |
2578 | } | |
2579 | return NULL; | |
2580 | } | |
2581 | ||
fdcea803 GS |
2582 | static long long int |
2583 | ofport_get_usage(const struct ofproto *ofproto, ofp_port_t ofp_port) | |
2584 | { | |
2585 | struct ofport_usage *usage; | |
2586 | ||
2587 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2588 | &ofproto->ofport_usage) { | |
2589 | if (usage->ofp_port == ofp_port) { | |
2590 | return usage->last_used; | |
2591 | } | |
2592 | } | |
2593 | return 0; | |
2594 | } | |
2595 | ||
2596 | static void | |
2597 | ofport_set_usage(struct ofproto *ofproto, ofp_port_t ofp_port, | |
2598 | long long int last_used) | |
2599 | { | |
2600 | struct ofport_usage *usage; | |
2601 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2602 | &ofproto->ofport_usage) { | |
2603 | if (usage->ofp_port == ofp_port) { | |
2604 | usage->last_used = last_used; | |
2605 | return; | |
2606 | } | |
2607 | } | |
2608 | ovs_assert(last_used == LLONG_MAX); | |
2609 | ||
2610 | usage = xmalloc(sizeof *usage); | |
2611 | usage->ofp_port = ofp_port; | |
2612 | usage->last_used = last_used; | |
2613 | hmap_insert(&ofproto->ofport_usage, &usage->hmap_node, | |
2614 | hash_ofp_port(ofp_port)); | |
2615 | } | |
2616 | ||
865b26a4 GS |
2617 | static void |
2618 | ofport_remove_usage(struct ofproto *ofproto, ofp_port_t ofp_port) | |
2619 | { | |
2620 | struct ofport_usage *usage; | |
2621 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2622 | &ofproto->ofport_usage) { | |
2623 | if (usage->ofp_port == ofp_port) { | |
2624 | hmap_remove(&ofproto->ofport_usage, &usage->hmap_node); | |
2625 | free(usage); | |
2626 | break; | |
2627 | } | |
2628 | } | |
2629 | } | |
2630 | ||
6527c598 PS |
2631 | int |
2632 | ofproto_port_get_stats(const struct ofport *port, struct netdev_stats *stats) | |
2633 | { | |
2634 | struct ofproto *ofproto = port->ofproto; | |
2635 | int error; | |
2636 | ||
2637 | if (ofproto->ofproto_class->port_get_stats) { | |
2638 | error = ofproto->ofproto_class->port_get_stats(port, stats); | |
2639 | } else { | |
2640 | error = EOPNOTSUPP; | |
2641 | } | |
2642 | ||
2643 | return error; | |
2644 | } | |
2645 | ||
01c77073 | 2646 | static int |
b33951b8 | 2647 | update_port(struct ofproto *ofproto, const char *name) |
064af421 | 2648 | { |
abe529af | 2649 | struct ofproto_port ofproto_port; |
9e1fd49b | 2650 | struct ofputil_phy_port pp; |
b33951b8 BP |
2651 | struct netdev *netdev; |
2652 | struct ofport *port; | |
01c77073 | 2653 | int error = 0; |
064af421 BP |
2654 | |
2655 | COVERAGE_INC(ofproto_update_port); | |
c874dc6d | 2656 | |
b33951b8 | 2657 | /* Fetch 'name''s location and properties from the datapath. */ |
abe529af | 2658 | netdev = (!ofproto_port_query_by_name(ofproto, name, &ofproto_port) |
fbfa2911 | 2659 | ? ofport_open(ofproto, &ofproto_port, &pp) |
b33951b8 | 2660 | : NULL); |
4e022ec0 | 2661 | |
b33951b8 | 2662 | if (netdev) { |
abe529af | 2663 | port = ofproto_get_port(ofproto, ofproto_port.ofp_port); |
b33951b8 | 2664 | if (port && !strcmp(netdev_get_name(port->netdev), name)) { |
e65942a0 BP |
2665 | struct netdev *old_netdev = port->netdev; |
2666 | ||
b33951b8 | 2667 | /* 'name' hasn't changed location. Any properties changed? */ |
9e1fd49b BP |
2668 | if (!ofport_equal(&port->pp, &pp)) { |
2669 | ofport_modified(port, &pp); | |
abe529af BP |
2670 | } |
2671 | ||
ada3428f | 2672 | update_mtu(ofproto, port); |
9197df76 | 2673 | |
e65942a0 BP |
2674 | /* Install the newly opened netdev in case it has changed. |
2675 | * Don't close the old netdev yet in case port_modified has to | |
2676 | * remove a retained reference to it.*/ | |
abe529af | 2677 | port->netdev = netdev; |
61501798 | 2678 | port->change_seq = netdev_get_change_seq(netdev); |
abe529af BP |
2679 | |
2680 | if (port->ofproto->ofproto_class->port_modified) { | |
2681 | port->ofproto->ofproto_class->port_modified(port); | |
b33951b8 | 2682 | } |
e65942a0 BP |
2683 | |
2684 | netdev_close(old_netdev); | |
b33951b8 BP |
2685 | } else { |
2686 | /* If 'port' is nonnull then its name differs from 'name' and thus | |
2687 | * we should delete it. If we think there's a port named 'name' | |
2688 | * then its port number must be wrong now so delete it too. */ | |
2689 | if (port) { | |
0f7d71a5 | 2690 | ofport_remove(port); |
b33951b8 BP |
2691 | } |
2692 | ofport_remove_with_name(ofproto, name); | |
01c77073 | 2693 | error = ofport_install(ofproto, netdev, &pp); |
c874dc6d | 2694 | } |
b33951b8 BP |
2695 | } else { |
2696 | /* Any port named 'name' is gone now. */ | |
2697 | ofport_remove_with_name(ofproto, name); | |
c874dc6d | 2698 | } |
abe529af | 2699 | ofproto_port_destroy(&ofproto_port); |
01c77073 BP |
2700 | |
2701 | return error; | |
064af421 BP |
2702 | } |
2703 | ||
2704 | static int | |
2705 | init_ports(struct ofproto *p) | |
2706 | { | |
abe529af BP |
2707 | struct ofproto_port_dump dump; |
2708 | struct ofproto_port ofproto_port; | |
e1b1d06a | 2709 | struct shash_node *node, *next; |
abe529af BP |
2710 | |
2711 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { | |
e1b1d06a JP |
2712 | const char *name = ofproto_port.name; |
2713 | ||
2714 | if (shash_find(&p->port_by_name, name)) { | |
fbfa2911 | 2715 | VLOG_WARN_RL(&rl, "%s: ignoring duplicate device %s in datapath", |
e1b1d06a | 2716 | p->name, name); |
abe529af | 2717 | } else { |
9e1fd49b | 2718 | struct ofputil_phy_port pp; |
b33951b8 BP |
2719 | struct netdev *netdev; |
2720 | ||
e1b1d06a JP |
2721 | /* Check if an OpenFlow port number had been requested. */ |
2722 | node = shash_find(&init_ofp_ports, name); | |
2723 | if (node) { | |
2724 | const struct iface_hint *iface_hint = node->data; | |
4e022ec0 AW |
2725 | simap_put(&p->ofp_requests, name, |
2726 | ofp_to_u16(iface_hint->ofp_port)); | |
e1b1d06a JP |
2727 | } |
2728 | ||
fbfa2911 | 2729 | netdev = ofport_open(p, &ofproto_port, &pp); |
b33951b8 | 2730 | if (netdev) { |
9e1fd49b | 2731 | ofport_install(p, netdev, &pp); |
430dbb14 | 2732 | if (ofp_to_u16(ofproto_port.ofp_port) < p->max_ports) { |
7c35397c | 2733 | p->alloc_port_no = MAX(p->alloc_port_no, |
430dbb14 | 2734 | ofp_to_u16(ofproto_port.ofp_port)); |
7c35397c | 2735 | } |
064af421 BP |
2736 | } |
2737 | } | |
2738 | } | |
b0ec0f27 | 2739 | |
e1b1d06a | 2740 | SHASH_FOR_EACH_SAFE(node, next, &init_ofp_ports) { |
4f9e08a5 | 2741 | struct iface_hint *iface_hint = node->data; |
e1b1d06a JP |
2742 | |
2743 | if (!strcmp(iface_hint->br_name, p->name)) { | |
2744 | free(iface_hint->br_name); | |
2745 | free(iface_hint->br_type); | |
4f9e08a5 | 2746 | free(iface_hint); |
e1b1d06a JP |
2747 | shash_delete(&init_ofp_ports, node); |
2748 | } | |
2749 | } | |
2750 | ||
064af421 BP |
2751 | return 0; |
2752 | } | |
9197df76 | 2753 | |
0670b5d0 | 2754 | static inline bool |
2755 | ofport_is_internal(const struct ofport *port) | |
2756 | { | |
2757 | return !strcmp(netdev_get_type(port->netdev), "internal"); | |
2758 | } | |
2759 | ||
9197df76 JP |
2760 | /* Find the minimum MTU of all non-datapath devices attached to 'p'. |
2761 | * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */ | |
2762 | static int | |
2763 | find_min_mtu(struct ofproto *p) | |
2764 | { | |
2765 | struct ofport *ofport; | |
2766 | int mtu = 0; | |
2767 | ||
2768 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2769 | struct netdev *netdev = ofport->netdev; | |
2770 | int dev_mtu; | |
2771 | ||
2772 | /* Skip any internal ports, since that's what we're trying to | |
2773 | * set. */ | |
0670b5d0 | 2774 | if (ofport_is_internal(ofport)) { |
9197df76 JP |
2775 | continue; |
2776 | } | |
2777 | ||
2778 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2779 | continue; | |
2780 | } | |
2781 | if (!mtu || dev_mtu < mtu) { | |
2782 | mtu = dev_mtu; | |
2783 | } | |
2784 | } | |
2785 | ||
2786 | return mtu ? mtu: ETH_PAYLOAD_MAX; | |
2787 | } | |
2788 | ||
ada3428f PS |
2789 | /* Update MTU of all datapath devices on 'p' to the minimum of the |
2790 | * non-datapath ports in event of 'port' added or changed. */ | |
9197df76 | 2791 | static void |
ada3428f | 2792 | update_mtu(struct ofproto *p, struct ofport *port) |
9197df76 | 2793 | { |
ada3428f | 2794 | struct netdev *netdev = port->netdev; |
0670b5d0 | 2795 | int dev_mtu; |
ada3428f PS |
2796 | |
2797 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2798 | port->mtu = 0; | |
2799 | return; | |
2800 | } | |
0670b5d0 | 2801 | if (ofport_is_internal(port)) { |
ada3428f PS |
2802 | if (dev_mtu > p->min_mtu) { |
2803 | if (!netdev_set_mtu(port->netdev, p->min_mtu)) { | |
2804 | dev_mtu = p->min_mtu; | |
2805 | } | |
2806 | } | |
2807 | port->mtu = dev_mtu; | |
2808 | return; | |
2809 | } | |
2810 | ||
ada3428f | 2811 | port->mtu = dev_mtu; |
0670b5d0 | 2812 | /* For non-internal port find new min mtu. */ |
2813 | update_mtu_ofproto(p); | |
2814 | } | |
2815 | ||
2816 | static void | |
2817 | update_mtu_ofproto(struct ofproto *p) | |
2818 | { | |
2819 | /* For non-internal port find new min mtu. */ | |
2820 | struct ofport *ofport; | |
2821 | int old_min = p->min_mtu; | |
2822 | ||
ada3428f PS |
2823 | p->min_mtu = find_min_mtu(p); |
2824 | if (p->min_mtu == old_min) { | |
2825 | return; | |
2826 | } | |
9197df76 JP |
2827 | |
2828 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2829 | struct netdev *netdev = ofport->netdev; | |
2830 | ||
0670b5d0 | 2831 | if (ofport_is_internal(ofport)) { |
ada3428f PS |
2832 | if (!netdev_set_mtu(netdev, p->min_mtu)) { |
2833 | ofport->mtu = p->min_mtu; | |
2834 | } | |
9197df76 JP |
2835 | } |
2836 | } | |
2837 | } | |
064af421 | 2838 | \f |
f416c8d6 JR |
2839 | static void |
2840 | ofproto_rule_destroy__(struct rule *rule) | |
2841 | OVS_NO_THREAD_SAFETY_ANALYSIS | |
2842 | { | |
2843 | cls_rule_destroy(CONST_CAST(struct cls_rule *, &rule->cr)); | |
2844 | rule_actions_destroy(rule_get_actions(rule)); | |
2845 | ovs_mutex_destroy(&rule->mutex); | |
2846 | rule->ofproto->ofproto_class->rule_dealloc(rule); | |
2847 | } | |
2848 | ||
2849 | static void | |
2850 | rule_destroy_cb(struct rule *rule) | |
f695ebfa | 2851 | OVS_NO_THREAD_SAFETY_ANALYSIS |
f416c8d6 | 2852 | { |
f695ebfa JR |
2853 | /* Send rule removed if needed. */ |
2854 | if (rule->flags & OFPUTIL_FF_SEND_FLOW_REM | |
2855 | && rule->removed_reason != OVS_OFPRR_NONE | |
2856 | && !rule_is_hidden(rule)) { | |
2857 | ofproto_rule_send_removed(rule); | |
2858 | } | |
f416c8d6 JR |
2859 | rule->ofproto->ofproto_class->rule_destruct(rule); |
2860 | ofproto_rule_destroy__(rule); | |
2861 | } | |
2862 | ||
a2143702 BP |
2863 | void |
2864 | ofproto_rule_ref(struct rule *rule) | |
064af421 | 2865 | { |
1eae3d33 | 2866 | if (rule) { |
37bec3d3 | 2867 | ovs_refcount_ref(&rule->ref_count); |
a2143702 BP |
2868 | } |
2869 | } | |
2870 | ||
f5d16e55 JR |
2871 | bool |
2872 | ofproto_rule_try_ref(struct rule *rule) | |
2873 | { | |
2874 | if (rule) { | |
2875 | return ovs_refcount_try_ref_rcu(&rule->ref_count); | |
2876 | } | |
2877 | return false; | |
2878 | } | |
2879 | ||
f416c8d6 JR |
2880 | /* Decrements 'rule''s ref_count and schedules 'rule' to be destroyed if the |
2881 | * ref_count reaches 0. | |
2882 | * | |
2883 | * Use of RCU allows short term use (between RCU quiescent periods) without | |
2884 | * keeping a reference. A reference must be taken if the rule needs to | |
2885 | * stay around accross the RCU quiescent periods. */ | |
a2143702 BP |
2886 | void |
2887 | ofproto_rule_unref(struct rule *rule) | |
2888 | { | |
24f83812 | 2889 | if (rule && ovs_refcount_unref_relaxed(&rule->ref_count) == 1) { |
f416c8d6 | 2890 | ovsrcu_postpone(rule_destroy_cb, rule); |
1eae3d33 | 2891 | } |
064af421 BP |
2892 | } |
2893 | ||
39c94593 JR |
2894 | static void |
2895 | remove_rule_rcu__(struct rule *rule) | |
2896 | OVS_REQUIRES(ofproto_mutex) | |
2897 | { | |
2898 | struct ofproto *ofproto = rule->ofproto; | |
2899 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
2900 | ||
44e0c35d | 2901 | ovs_assert(!cls_rule_visible_in_version(&rule->cr, OVS_VERSION_MAX)); |
39c94593 JR |
2902 | if (!classifier_remove(&table->cls, &rule->cr)) { |
2903 | OVS_NOT_REACHED(); | |
2904 | } | |
1fc71871 JR |
2905 | if (ofproto->ofproto_class->rule_delete) { |
2906 | ofproto->ofproto_class->rule_delete(rule); | |
2907 | } | |
39c94593 JR |
2908 | ofproto_rule_unref(rule); |
2909 | } | |
2910 | ||
2911 | static void | |
2912 | remove_rule_rcu(struct rule *rule) | |
2913 | OVS_EXCLUDED(ofproto_mutex) | |
2914 | { | |
2915 | ovs_mutex_lock(&ofproto_mutex); | |
2916 | remove_rule_rcu__(rule); | |
2917 | ovs_mutex_unlock(&ofproto_mutex); | |
2918 | } | |
2919 | ||
2920 | /* Removes and deletes rules from a NULL-terminated array of rule pointers. */ | |
2921 | static void | |
2922 | remove_rules_rcu(struct rule **rules) | |
2923 | OVS_EXCLUDED(ofproto_mutex) | |
2924 | { | |
2925 | struct rule **orig_rules = rules; | |
2926 | ||
2927 | if (*rules) { | |
2928 | struct ofproto *ofproto = rules[0]->ofproto; | |
2929 | unsigned long tables[BITMAP_N_LONGS(256)]; | |
2930 | struct rule *rule; | |
2931 | size_t table_id; | |
2932 | ||
2933 | memset(tables, 0, sizeof tables); | |
2934 | ||
2935 | ovs_mutex_lock(&ofproto_mutex); | |
2936 | while ((rule = *rules++)) { | |
2937 | /* Defer once for each new table. This defers the subtable cleanup | |
2938 | * until later, so that when removing large number of flows the | |
2939 | * operation is faster. */ | |
2940 | if (!bitmap_is_set(tables, rule->table_id)) { | |
2941 | struct classifier *cls = &ofproto->tables[rule->table_id].cls; | |
2942 | ||
2943 | bitmap_set1(tables, rule->table_id); | |
2944 | classifier_defer(cls); | |
2945 | } | |
2946 | remove_rule_rcu__(rule); | |
2947 | } | |
2948 | ||
2949 | BITMAP_FOR_EACH_1(table_id, 256, tables) { | |
2950 | struct classifier *cls = &ofproto->tables[table_id].cls; | |
2951 | ||
2952 | classifier_publish(cls); | |
2953 | } | |
2954 | ovs_mutex_unlock(&ofproto_mutex); | |
2955 | } | |
2956 | ||
2957 | free(orig_rules); | |
2958 | } | |
2959 | ||
809c7548 RW |
2960 | void |
2961 | ofproto_group_ref(struct ofgroup *group) | |
2962 | { | |
2963 | if (group) { | |
2964 | ovs_refcount_ref(&group->ref_count); | |
2965 | } | |
2966 | } | |
2967 | ||
db88b35c JR |
2968 | bool |
2969 | ofproto_group_try_ref(struct ofgroup *group) | |
2970 | { | |
2971 | if (group) { | |
2972 | return ovs_refcount_try_ref_rcu(&group->ref_count); | |
2973 | } | |
2974 | return false; | |
2975 | } | |
2976 | ||
2977 | static void | |
2978 | group_destroy_cb(struct ofgroup *group) | |
2979 | { | |
2980 | group->ofproto->ofproto_class->group_destruct(group); | |
e8dba719 JR |
2981 | ofputil_group_properties_destroy(CONST_CAST(struct ofputil_group_props *, |
2982 | &group->props)); | |
db88b35c JR |
2983 | ofputil_bucket_list_destroy(CONST_CAST(struct ovs_list *, |
2984 | &group->buckets)); | |
2985 | group->ofproto->ofproto_class->group_dealloc(group); | |
2986 | } | |
2987 | ||
809c7548 RW |
2988 | void |
2989 | ofproto_group_unref(struct ofgroup *group) | |
cc099268 | 2990 | OVS_NO_THREAD_SAFETY_ANALYSIS |
809c7548 | 2991 | { |
db88b35c | 2992 | if (group && ovs_refcount_unref_relaxed(&group->ref_count) == 1) { |
fe59694b | 2993 | ovs_assert(rule_collection_n(&group->rules) == 0); |
db88b35c | 2994 | ovsrcu_postpone(group_destroy_cb, group); |
809c7548 RW |
2995 | } |
2996 | } | |
2997 | ||
5d08a275 JR |
2998 | static void |
2999 | remove_group_rcu__(struct ofgroup *group) | |
3000 | OVS_REQUIRES(ofproto_mutex) | |
3001 | { | |
3002 | struct ofproto *ofproto = group->ofproto; | |
3003 | ||
3004 | ovs_assert(!versions_visible_in_version(&group->versions, OVS_VERSION_MAX)); | |
3005 | ||
3006 | cmap_remove(&ofproto->groups, &group->cmap_node, | |
3007 | hash_int(group->group_id, 0)); | |
3008 | ofproto_group_unref(group); | |
3009 | } | |
3010 | ||
3011 | static void | |
3012 | remove_group_rcu(struct ofgroup *group) | |
3013 | OVS_EXCLUDED(ofproto_mutex) | |
3014 | { | |
3015 | ovs_mutex_lock(&ofproto_mutex); | |
3016 | remove_group_rcu__(group); | |
3017 | ovs_mutex_unlock(&ofproto_mutex); | |
3018 | } | |
3019 | ||
3020 | /* Removes and deletes groups from a NULL-terminated array of group | |
3021 | * pointers. */ | |
3022 | static void | |
3023 | remove_groups_rcu(struct ofgroup **groups) | |
3024 | OVS_EXCLUDED(ofproto_mutex) | |
3025 | { | |
3026 | ovs_mutex_lock(&ofproto_mutex); | |
3027 | for (struct ofgroup **g = groups; *g; g++) { | |
3028 | remove_group_rcu__(*g); | |
3029 | } | |
3030 | ovs_mutex_unlock(&ofproto_mutex); | |
3031 | free(groups); | |
3032 | } | |
3033 | ||
65efd2ab JR |
3034 | static uint32_t get_provider_meter_id(const struct ofproto *, |
3035 | uint32_t of_meter_id); | |
3036 | ||
dc723c44 JR |
3037 | /* Creates and returns a new 'struct rule_actions', whose actions are a copy |
3038 | * of from the 'ofpacts_len' bytes of 'ofpacts'. */ | |
3039 | const struct rule_actions * | |
4c7562c5 | 3040 | rule_actions_create(const struct ofpact *ofpacts, size_t ofpacts_len) |
6f00e29b BP |
3041 | { |
3042 | struct rule_actions *actions; | |
3043 | ||
dc723c44 | 3044 | actions = xmalloc(sizeof *actions + ofpacts_len); |
6f00e29b | 3045 | actions->ofpacts_len = ofpacts_len; |
dc723c44 | 3046 | memcpy(actions->ofpacts, ofpacts, ofpacts_len); |
cc099268 JR |
3047 | actions->has_meter = ofpacts_get_meter(ofpacts, ofpacts_len) != 0; |
3048 | actions->has_groups = | |
3049 | (ofpact_find_type_flattened(ofpacts, OFPACT_GROUP, | |
3050 | ofpact_end(ofpacts, ofpacts_len)) | |
3051 | != NULL); | |
35f48b8b BP |
3052 | actions->has_learn_with_delete = (next_learn_with_delete(actions, NULL) |
3053 | != NULL); | |
3054 | ||
6f00e29b BP |
3055 | return actions; |
3056 | } | |
3057 | ||
dc723c44 | 3058 | /* Free the actions after the RCU quiescent period is reached. */ |
6f00e29b | 3059 | void |
dc723c44 | 3060 | rule_actions_destroy(const struct rule_actions *actions) |
6f00e29b | 3061 | { |
06a0f3e2 | 3062 | if (actions) { |
dc723c44 | 3063 | ovsrcu_postpone(free, CONST_CAST(struct rule_actions *, actions)); |
6f00e29b BP |
3064 | } |
3065 | } | |
3066 | ||
bcf84111 | 3067 | /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action |
f25d0cf3 | 3068 | * that outputs to 'port' (output to OFPP_FLOOD and OFPP_ALL doesn't count). */ |
cdbdeeda | 3069 | bool |
4e022ec0 | 3070 | ofproto_rule_has_out_port(const struct rule *rule, ofp_port_t port) |
15aaf599 | 3071 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 3072 | { |
06a0f3e2 BP |
3073 | if (port == OFPP_ANY) { |
3074 | return true; | |
3075 | } else { | |
3076 | const struct rule_actions *actions = rule_get_actions(rule); | |
3077 | return ofpacts_output_to_port(actions->ofpacts, | |
3078 | actions->ofpacts_len, port); | |
3079 | } | |
064af421 BP |
3080 | } |
3081 | ||
7395c052 | 3082 | /* Returns true if 'rule' has group and equals group_id. */ |
74e79b7c | 3083 | static bool |
7395c052 | 3084 | ofproto_rule_has_out_group(const struct rule *rule, uint32_t group_id) |
15aaf599 | 3085 | OVS_REQUIRES(ofproto_mutex) |
7395c052 | 3086 | { |
06a0f3e2 BP |
3087 | if (group_id == OFPG_ANY) { |
3088 | return true; | |
3089 | } else { | |
3090 | const struct rule_actions *actions = rule_get_actions(rule); | |
3091 | return ofpacts_output_to_group(actions->ofpacts, | |
3092 | actions->ofpacts_len, group_id); | |
3093 | } | |
7395c052 NZ |
3094 | } |
3095 | ||
35412852 BP |
3096 | static void |
3097 | rule_execute_destroy(struct rule_execute *e) | |
eedc0097 | 3098 | { |
35412852 | 3099 | ofproto_rule_unref(e->rule); |
417e7e66 | 3100 | ovs_list_remove(&e->list_node); |
35412852 BP |
3101 | free(e); |
3102 | } | |
eedc0097 | 3103 | |
35412852 BP |
3104 | /* Executes all "rule_execute" operations queued up in ofproto->rule_executes, |
3105 | * by passing them to the ofproto provider. */ | |
3106 | static void | |
3107 | run_rule_executes(struct ofproto *ofproto) | |
15aaf599 | 3108 | OVS_EXCLUDED(ofproto_mutex) |
35412852 BP |
3109 | { |
3110 | struct rule_execute *e, *next; | |
ca6ba700 | 3111 | struct ovs_list executes; |
35412852 BP |
3112 | |
3113 | guarded_list_pop_all(&ofproto->rule_executes, &executes); | |
3114 | LIST_FOR_EACH_SAFE (e, next, list_node, &executes) { | |
35412852 BP |
3115 | struct flow flow; |
3116 | ||
cf62fa4c | 3117 | flow_extract(e->packet, &flow); |
b5e7e61a | 3118 | flow.in_port.ofp_port = e->in_port; |
35412852 BP |
3119 | ofproto->ofproto_class->rule_execute(e->rule, &flow, e->packet); |
3120 | ||
3121 | rule_execute_destroy(e); | |
3122 | } | |
3123 | } | |
3124 | ||
3125 | /* Destroys and discards all "rule_execute" operations queued up in | |
3126 | * ofproto->rule_executes. */ | |
3127 | static void | |
3128 | destroy_rule_executes(struct ofproto *ofproto) | |
3129 | { | |
3130 | struct rule_execute *e, *next; | |
ca6ba700 | 3131 | struct ovs_list executes; |
35412852 BP |
3132 | |
3133 | guarded_list_pop_all(&ofproto->rule_executes, &executes); | |
3134 | LIST_FOR_EACH_SAFE (e, next, list_node, &executes) { | |
cf62fa4c | 3135 | dp_packet_delete(e->packet); |
35412852 BP |
3136 | rule_execute_destroy(e); |
3137 | } | |
350a665f BP |
3138 | } |
3139 | ||
adcf00ba | 3140 | static bool |
834fe5cb | 3141 | rule_is_readonly(const struct rule *rule) |
5c67e4af | 3142 | { |
834fe5cb BP |
3143 | const struct oftable *table = &rule->ofproto->tables[rule->table_id]; |
3144 | return (table->flags & OFTABLE_READONLY) != 0; | |
5c67e4af | 3145 | } |
fa066f01 | 3146 | \f |
35f48b8b BP |
3147 | static uint32_t |
3148 | hash_learned_cookie(ovs_be64 cookie_, uint8_t table_id) | |
3149 | { | |
3150 | uint64_t cookie = (OVS_FORCE uint64_t) cookie_; | |
3151 | return hash_3words(cookie, cookie >> 32, table_id); | |
3152 | } | |
3153 | ||
3154 | static void | |
3155 | learned_cookies_update_one__(struct ofproto *ofproto, | |
3156 | const struct ofpact_learn *learn, | |
ca6ba700 | 3157 | int delta, struct ovs_list *dead_cookies) |
35f48b8b BP |
3158 | OVS_REQUIRES(ofproto_mutex) |
3159 | { | |
3160 | uint32_t hash = hash_learned_cookie(learn->cookie, learn->table_id); | |
3161 | struct learned_cookie *c; | |
3162 | ||
3163 | HMAP_FOR_EACH_WITH_HASH (c, u.hmap_node, hash, &ofproto->learned_cookies) { | |
3164 | if (c->cookie == learn->cookie && c->table_id == learn->table_id) { | |
3165 | c->n += delta; | |
3166 | ovs_assert(c->n >= 0); | |
3167 | ||
3168 | if (!c->n) { | |
3169 | hmap_remove(&ofproto->learned_cookies, &c->u.hmap_node); | |
417e7e66 | 3170 | ovs_list_push_back(dead_cookies, &c->u.list_node); |
35f48b8b BP |
3171 | } |
3172 | ||
3173 | return; | |
3174 | } | |
3175 | } | |
3176 | ||
3177 | ovs_assert(delta > 0); | |
3178 | c = xmalloc(sizeof *c); | |
3179 | hmap_insert(&ofproto->learned_cookies, &c->u.hmap_node, hash); | |
3180 | c->cookie = learn->cookie; | |
3181 | c->table_id = learn->table_id; | |
3182 | c->n = delta; | |
3183 | } | |
3184 | ||
3185 | static const struct ofpact_learn * | |
3186 | next_learn_with_delete(const struct rule_actions *actions, | |
3187 | const struct ofpact_learn *start) | |
3188 | { | |
3189 | const struct ofpact *pos; | |
3190 | ||
3191 | for (pos = start ? ofpact_next(&start->ofpact) : actions->ofpacts; | |
3192 | pos < ofpact_end(actions->ofpacts, actions->ofpacts_len); | |
3193 | pos = ofpact_next(pos)) { | |
3194 | if (pos->type == OFPACT_LEARN) { | |
3195 | const struct ofpact_learn *learn = ofpact_get_LEARN(pos); | |
3196 | if (learn->flags & NX_LEARN_F_DELETE_LEARNED) { | |
3197 | return learn; | |
3198 | } | |
3199 | } | |
3200 | } | |
3201 | ||
3202 | return NULL; | |
3203 | } | |
3204 | ||
3205 | static void | |
3206 | learned_cookies_update__(struct ofproto *ofproto, | |
3207 | const struct rule_actions *actions, | |
ca6ba700 | 3208 | int delta, struct ovs_list *dead_cookies) |
35f48b8b BP |
3209 | OVS_REQUIRES(ofproto_mutex) |
3210 | { | |
3211 | if (actions->has_learn_with_delete) { | |
3212 | const struct ofpact_learn *learn; | |
3213 | ||
3214 | for (learn = next_learn_with_delete(actions, NULL); learn; | |
3215 | learn = next_learn_with_delete(actions, learn)) { | |
3216 | learned_cookies_update_one__(ofproto, learn, delta, dead_cookies); | |
3217 | } | |
3218 | } | |
3219 | } | |
3220 | ||
3221 | static void | |
3222 | learned_cookies_inc(struct ofproto *ofproto, | |
3223 | const struct rule_actions *actions) | |
3224 | OVS_REQUIRES(ofproto_mutex) | |
3225 | { | |
3226 | learned_cookies_update__(ofproto, actions, +1, NULL); | |
3227 | } | |
3228 | ||
3229 | static void | |
3230 | learned_cookies_dec(struct ofproto *ofproto, | |
3231 | const struct rule_actions *actions, | |
ca6ba700 | 3232 | struct ovs_list *dead_cookies) |
35f48b8b BP |
3233 | OVS_REQUIRES(ofproto_mutex) |
3234 | { | |
3235 | learned_cookies_update__(ofproto, actions, -1, dead_cookies); | |
3236 | } | |
3237 | ||
3238 | static void | |
ca6ba700 | 3239 | learned_cookies_flush(struct ofproto *ofproto, struct ovs_list *dead_cookies) |
35f48b8b BP |
3240 | OVS_REQUIRES(ofproto_mutex) |
3241 | { | |
5f03c983 | 3242 | struct learned_cookie *c; |
35f48b8b | 3243 | |
5f03c983 | 3244 | LIST_FOR_EACH_POP (c, u.list_node, dead_cookies) { |
35f48b8b BP |
3245 | struct rule_criteria criteria; |
3246 | struct rule_collection rules; | |
3247 | struct match match; | |
3248 | ||
3249 | match_init_catchall(&match); | |
44e0c35d | 3250 | rule_criteria_init(&criteria, c->table_id, &match, 0, OVS_VERSION_MAX, |
35f48b8b BP |
3251 | c->cookie, OVS_BE64_MAX, OFPP_ANY, OFPG_ANY); |
3252 | rule_criteria_require_rw(&criteria, false); | |
3253 | collect_rules_loose(ofproto, &criteria, &rules); | |
35f48b8b | 3254 | rule_criteria_destroy(&criteria); |
39c94593 | 3255 | delete_flows__(&rules, OFPRR_DELETE, NULL); |
35f48b8b | 3256 | |
35f48b8b BP |
3257 | free(c); |
3258 | } | |
3259 | } | |
3260 | \f | |
90bf1e07 | 3261 | static enum ofperr |
d1e2cf21 | 3262 | handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3263 | { |
b0421aa2 | 3264 | ofconn_send_reply(ofconn, make_echo_reply(oh)); |
064af421 | 3265 | return 0; |
064af421 BP |
3266 | } |
3267 | ||
3c1bb396 BP |
3268 | static void |
3269 | query_tables(struct ofproto *ofproto, | |
3270 | struct ofputil_table_features **featuresp, | |
3271 | struct ofputil_table_stats **statsp) | |
3272 | { | |
178742f9 BP |
3273 | struct mf_bitmap rw_fields = oxm_writable_fields(); |
3274 | struct mf_bitmap match = oxm_matchable_fields(); | |
3275 | struct mf_bitmap mask = oxm_maskable_fields(); | |
3c1bb396 BP |
3276 | |
3277 | struct ofputil_table_features *features; | |
3278 | struct ofputil_table_stats *stats; | |
3279 | int i; | |
3280 | ||
3c1bb396 BP |
3281 | features = *featuresp = xcalloc(ofproto->n_tables, sizeof *features); |
3282 | for (i = 0; i < ofproto->n_tables; i++) { | |
3283 | struct ofputil_table_features *f = &features[i]; | |
3284 | ||
3285 | f->table_id = i; | |
3286 | sprintf(f->name, "table%d", i); | |
3287 | f->metadata_match = OVS_BE64_MAX; | |
3288 | f->metadata_write = OVS_BE64_MAX; | |
afcea9ea | 3289 | atomic_read_relaxed(&ofproto->tables[i].miss_config, &f->miss_config); |
3c1bb396 BP |
3290 | f->max_entries = 1000000; |
3291 | ||
5dc7516b BP |
3292 | bool more_tables = false; |
3293 | for (int j = i + 1; j < ofproto->n_tables; j++) { | |
3294 | if (!(ofproto->tables[j].flags & OFTABLE_HIDDEN)) { | |
3295 | bitmap_set1(f->nonmiss.next, j); | |
3296 | more_tables = true; | |
3297 | } | |
3298 | } | |
3c1bb396 | 3299 | f->nonmiss.instructions = (1u << N_OVS_INSTRUCTIONS) - 1; |
5dc7516b | 3300 | if (!more_tables) { |
3c1bb396 BP |
3301 | f->nonmiss.instructions &= ~(1u << OVSINST_OFPIT11_GOTO_TABLE); |
3302 | } | |
3303 | f->nonmiss.write.ofpacts = (UINT64_C(1) << N_OFPACTS) - 1; | |
3304 | f->nonmiss.write.set_fields = rw_fields; | |
3305 | f->nonmiss.apply = f->nonmiss.write; | |
3306 | f->miss = f->nonmiss; | |
3307 | ||
3308 | f->match = match; | |
3309 | f->mask = mask; | |
3310 | f->wildcard = match; | |
3311 | } | |
3312 | ||
3313 | if (statsp) { | |
3314 | stats = *statsp = xcalloc(ofproto->n_tables, sizeof *stats); | |
3315 | for (i = 0; i < ofproto->n_tables; i++) { | |
3316 | struct ofputil_table_stats *s = &stats[i]; | |
3c1bb396 BP |
3317 | |
3318 | s->table_id = i; | |
d79e3d70 | 3319 | s->active_count = ofproto->tables[i].n_flows; |
3fbbcba7 BP |
3320 | if (i == 0) { |
3321 | s->active_count -= connmgr_count_hidden_rules( | |
3322 | ofproto->connmgr); | |
3323 | } | |
3c1bb396 BP |
3324 | } |
3325 | } else { | |
3326 | stats = NULL; | |
3327 | } | |
3328 | ||
3329 | ofproto->ofproto_class->query_tables(ofproto, features, stats); | |
3330 | ||
3331 | for (i = 0; i < ofproto->n_tables; i++) { | |
3332 | const struct oftable *table = &ofproto->tables[i]; | |
3333 | struct ofputil_table_features *f = &features[i]; | |
3334 | ||
3335 | if (table->name) { | |
3336 | ovs_strzcpy(f->name, table->name, sizeof f->name); | |
3337 | } | |
3338 | ||
3339 | if (table->max_flows < f->max_entries) { | |
3340 | f->max_entries = table->max_flows; | |
3341 | } | |
3342 | } | |
3343 | } | |
3344 | ||
3345 | static void | |
3346 | query_switch_features(struct ofproto *ofproto, | |
3347 | bool *arp_match_ip, uint64_t *ofpacts) | |
3348 | { | |
3349 | struct ofputil_table_features *features, *f; | |
3350 | ||
3351 | *arp_match_ip = false; | |
3352 | *ofpacts = 0; | |
3353 | ||
3354 | query_tables(ofproto, &features, NULL); | |
3355 | for (f = features; f < &features[ofproto->n_tables]; f++) { | |
3356 | *ofpacts |= f->nonmiss.apply.ofpacts | f->miss.apply.ofpacts; | |
3357 | if (bitmap_is_set(f->match.bm, MFF_ARP_SPA) || | |
3358 | bitmap_is_set(f->match.bm, MFF_ARP_TPA)) { | |
3359 | *arp_match_ip = true; | |
3360 | } | |
3361 | } | |
3362 | free(features); | |
3363 | ||
3364 | /* Sanity check. */ | |
3365 | ovs_assert(*ofpacts & (UINT64_C(1) << OFPACT_OUTPUT)); | |
3366 | } | |
3367 | ||
90bf1e07 | 3368 | static enum ofperr |
d1e2cf21 | 3369 | handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3370 | { |
64ff1d96 | 3371 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
9e1fd49b | 3372 | struct ofputil_switch_features features; |
064af421 | 3373 | struct ofport *port; |
6c1491fb | 3374 | bool arp_match_ip; |
9e1fd49b | 3375 | struct ofpbuf *b; |
064af421 | 3376 | |
3c1bb396 | 3377 | query_switch_features(ofproto, &arp_match_ip, &features.ofpacts); |
064af421 | 3378 | |
9e1fd49b BP |
3379 | features.datapath_id = ofproto->datapath_id; |
3380 | features.n_buffers = pktbuf_capacity(); | |
adcf00ba | 3381 | features.n_tables = ofproto_get_n_visible_tables(ofproto); |
9e1fd49b | 3382 | features.capabilities = (OFPUTIL_C_FLOW_STATS | OFPUTIL_C_TABLE_STATS | |
4efe455d BP |
3383 | OFPUTIL_C_PORT_STATS | OFPUTIL_C_QUEUE_STATS | |
3384 | OFPUTIL_C_GROUP_STATS); | |
6c1491fb | 3385 | if (arp_match_ip) { |
9e1fd49b | 3386 | features.capabilities |= OFPUTIL_C_ARP_MATCH_IP; |
6c1491fb | 3387 | } |
2e1ae200 JR |
3388 | /* FIXME: Fill in proper features.auxiliary_id for auxiliary connections */ |
3389 | features.auxiliary_id = 0; | |
9e1fd49b BP |
3390 | b = ofputil_encode_switch_features(&features, ofconn_get_protocol(ofconn), |
3391 | oh->xid); | |
64ff1d96 | 3392 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
9e1fd49b | 3393 | ofputil_put_switch_features_port(&port->pp, b); |
064af421 | 3394 | } |
064af421 | 3395 | |
9e1fd49b | 3396 | ofconn_send_reply(ofconn, b); |
064af421 BP |
3397 | return 0; |
3398 | } | |
064af421 | 3399 | |
90bf1e07 | 3400 | static enum ofperr |
d1e2cf21 | 3401 | handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3402 | { |
ad99e2ed BP |
3403 | struct ofputil_switch_config config; |
3404 | config.frag = ofconn_get_ofproto(ofconn)->frag_handling; | |
3405 | config.invalid_ttl_to_controller | |
3406 | = ofconn_get_invalid_ttl_to_controller(ofconn); | |
3407 | config.miss_send_len = ofconn_get_miss_send_len(ofconn); | |
3408 | ||
3409 | ofconn_send_reply(ofconn, ofputil_encode_get_config_reply(oh, &config)); | |
2d70a31a | 3410 | |
064af421 BP |
3411 | return 0; |
3412 | } | |
064af421 | 3413 | |
90bf1e07 | 3414 | static enum ofperr |
982697a4 | 3415 | handle_set_config(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3416 | { |
64ff1d96 | 3417 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
ad99e2ed BP |
3418 | struct ofputil_switch_config config; |
3419 | enum ofperr error; | |
3420 | ||
3421 | error = ofputil_decode_set_config(oh, &config); | |
3422 | if (error) { | |
3423 | return error; | |
3424 | } | |
2d70a31a | 3425 | |
7257b535 | 3426 | if (ofconn_get_type(ofconn) != OFCONN_PRIMARY |
f4f1ea7e | 3427 | || ofconn_get_role(ofconn) != OFPCR12_ROLE_SLAVE) { |
ad99e2ed BP |
3428 | enum ofputil_frag_handling cur = ofproto->frag_handling; |
3429 | enum ofputil_frag_handling next = config.frag; | |
7257b535 | 3430 | |
7257b535 BP |
3431 | if (cur != next) { |
3432 | if (ofproto->ofproto_class->set_frag_handling(ofproto, next)) { | |
3433 | ofproto->frag_handling = next; | |
3434 | } else { | |
3435 | VLOG_WARN_RL(&rl, "%s: unsupported fragment handling mode %s", | |
3436 | ofproto->name, | |
3437 | ofputil_frag_handling_to_string(next)); | |
3438 | } | |
064af421 BP |
3439 | } |
3440 | } | |
ebe482fd | 3441 | |
ad99e2ed BP |
3442 | if (config.invalid_ttl_to_controller >= 0) { |
3443 | ofconn_set_invalid_ttl_to_controller(ofconn, | |
3444 | config.invalid_ttl_to_controller); | |
3445 | } | |
3446 | ||
3447 | ofconn_set_miss_send_len(ofconn, config.miss_send_len); | |
0ad9b732 | 3448 | |
064af421 | 3449 | return 0; |
064af421 BP |
3450 | } |
3451 | ||
9deba63b | 3452 | /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow |
90bf1e07 BP |
3453 | * error message code for the caller to propagate upward. Otherwise, returns |
3454 | * 0. | |
3455 | * | |
3456 | * The log message mentions 'msg_type'. */ | |
3457 | static enum ofperr | |
3458 | reject_slave_controller(struct ofconn *ofconn) | |
9deba63b | 3459 | { |
1ce0a5fa | 3460 | if (ofconn_get_type(ofconn) == OFCONN_PRIMARY |
f4f1ea7e | 3461 | && ofconn_get_role(ofconn) == OFPCR12_ROLE_SLAVE) { |
20e4ec1a | 3462 | return OFPERR_OFPBRC_IS_SLAVE; |
9deba63b BP |
3463 | } else { |
3464 | return 0; | |
3465 | } | |
3466 | } | |
3467 | ||
7e9f8266 BP |
3468 | /* Checks that the 'ofpacts_len' bytes of action in 'ofpacts' are appropriate |
3469 | * for 'ofproto': | |
3470 | * | |
3471 | * - If they use a meter, then 'ofproto' has that meter configured. | |
3472 | * | |
3473 | * - If they use any groups, then 'ofproto' has that group configured. | |
3474 | * | |
3475 | * Returns 0 if successful, otherwise an OpenFlow error. */ | |
89108874 | 3476 | enum ofperr |
9cae45dc | 3477 | ofproto_check_ofpacts(struct ofproto *ofproto, |
7e9f8266 | 3478 | const struct ofpact ofpacts[], size_t ofpacts_len) |
9cae45dc | 3479 | { |
9cae45dc JR |
3480 | uint32_t mid; |
3481 | ||
7e9f8266 BP |
3482 | mid = ofpacts_get_meter(ofpacts, ofpacts_len); |
3483 | if (mid && get_provider_meter_id(ofproto, mid) == UINT32_MAX) { | |
3484 | return OFPERR_OFPMMFC_INVALID_METER; | |
9cae45dc JR |
3485 | } |
3486 | ||
cc099268 JR |
3487 | const struct ofpact_group *a; |
3488 | OFPACT_FOR_EACH_TYPE_FLATTENED (a, GROUP, ofpacts, ofpacts_len) { | |
3489 | if (!ofproto_group_exists(ofproto, a->group_id)) { | |
7e9f8266 | 3490 | return OFPERR_OFPBAC_BAD_OUT_GROUP; |
84d68566 SH |
3491 | } |
3492 | } | |
3493 | ||
9cae45dc JR |
3494 | return 0; |
3495 | } | |
3496 | ||
90bf1e07 | 3497 | static enum ofperr |
982697a4 | 3498 | handle_packet_out(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3499 | { |
64ff1d96 | 3500 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
c6a93eb7 | 3501 | struct ofputil_packet_out po; |
cf62fa4c | 3502 | struct dp_packet *payload; |
f25d0cf3 BP |
3503 | uint64_t ofpacts_stub[1024 / 8]; |
3504 | struct ofpbuf ofpacts; | |
ae412e7d | 3505 | struct flow flow; |
90bf1e07 | 3506 | enum ofperr error; |
064af421 | 3507 | |
ac51afaf BP |
3508 | COVERAGE_INC(ofproto_packet_out); |
3509 | ||
76589937 | 3510 | error = reject_slave_controller(ofconn); |
9deba63b | 3511 | if (error) { |
f25d0cf3 | 3512 | goto exit; |
9deba63b BP |
3513 | } |
3514 | ||
c6a93eb7 | 3515 | /* Decode message. */ |
f25d0cf3 | 3516 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
982697a4 | 3517 | error = ofputil_decode_packet_out(&po, oh, &ofpacts); |
064af421 | 3518 | if (error) { |
f25d0cf3 | 3519 | goto exit_free_ofpacts; |
064af421 | 3520 | } |
430dbb14 | 3521 | if (ofp_to_u16(po.in_port) >= p->max_ports |
4e022ec0 | 3522 | && ofp_to_u16(po.in_port) < ofp_to_u16(OFPP_MAX)) { |
2e1bfcb6 | 3523 | error = OFPERR_OFPBRC_BAD_PORT; |
91858960 BP |
3524 | goto exit_free_ofpacts; |
3525 | } | |
064af421 | 3526 | |
ac51afaf | 3527 | /* Get payload. */ |
c6a93eb7 BP |
3528 | if (po.buffer_id != UINT32_MAX) { |
3529 | error = ofconn_pktbuf_retrieve(ofconn, po.buffer_id, &payload, NULL); | |
9bfe9334 | 3530 | if (error) { |
f25d0cf3 | 3531 | goto exit_free_ofpacts; |
064af421 | 3532 | } |
064af421 | 3533 | } else { |
bb622f82 | 3534 | /* Ensure that the L3 header is 32-bit aligned. */ |
cf62fa4c | 3535 | payload = dp_packet_clone_data_with_headroom(po.packet, po.packet_len, 2); |
e1154f71 BP |
3536 | } |
3537 | ||
548de4dd | 3538 | /* Verify actions against packet, then send packet if successful. */ |
cf62fa4c | 3539 | flow_extract(payload, &flow); |
b5e7e61a | 3540 | flow.in_port.ofp_port = po.in_port; |
89108874 JR |
3541 | |
3542 | /* Check actions like for flow mods. We pass a 'table_id' of 0 to | |
3543 | * ofproto_check_consistency(), which isn't strictly correct because these | |
3544 | * actions aren't in any table. This is OK as 'table_id' is only used to | |
3545 | * check instructions (e.g., goto-table), which can't appear on the action | |
3546 | * list of a packet-out. */ | |
3547 | error = ofpacts_check_consistency(po.ofpacts, po.ofpacts_len, | |
3548 | &flow, u16_to_ofp(p->max_ports), | |
3549 | 0, p->n_tables, | |
3550 | ofconn_get_protocol(ofconn)); | |
548de4dd | 3551 | if (!error) { |
cc099268 JR |
3552 | /* Should hold ofproto_mutex to guarantee state don't |
3553 | * change between the check and the execution. */ | |
89108874 JR |
3554 | error = ofproto_check_ofpacts(p, po.ofpacts, po.ofpacts_len); |
3555 | if (!error) { | |
3556 | error = p->ofproto_class->packet_out(p, payload, &flow, | |
3557 | po.ofpacts, po.ofpacts_len); | |
3558 | } | |
548de4dd | 3559 | } |
cf62fa4c | 3560 | dp_packet_delete(payload); |
abe529af | 3561 | |
f25d0cf3 BP |
3562 | exit_free_ofpacts: |
3563 | ofpbuf_uninit(&ofpacts); | |
3564 | exit: | |
abe529af | 3565 | return error; |
064af421 BP |
3566 | } |
3567 | ||
77ab5fd2 BP |
3568 | static enum ofperr |
3569 | handle_nxt_resume(struct ofconn *ofconn, const struct ofp_header *oh) | |
3570 | { | |
3571 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
3572 | struct ofputil_packet_in_private pin; | |
3573 | enum ofperr error; | |
3574 | ||
3575 | error = ofputil_decode_packet_in_private(oh, false, &pin, NULL, NULL); | |
3576 | if (error) { | |
3577 | return error; | |
3578 | } | |
3579 | ||
3580 | error = (ofproto->ofproto_class->nxt_resume | |
3581 | ? ofproto->ofproto_class->nxt_resume(ofproto, &pin) | |
3582 | : OFPERR_NXR_NOT_SUPPORTED); | |
3583 | ||
3584 | ofputil_packet_in_private_destroy(&pin); | |
3585 | ||
3586 | return error; | |
3587 | } | |
3588 | ||
064af421 | 3589 | static void |
2a6f78e0 | 3590 | update_port_config(struct ofconn *ofconn, struct ofport *port, |
9e1fd49b BP |
3591 | enum ofputil_port_config config, |
3592 | enum ofputil_port_config mask) | |
064af421 | 3593 | { |
2a6f78e0 | 3594 | enum ofputil_port_config toggle = (config ^ port->pp.config) & mask; |
abe529af | 3595 | |
2a6f78e0 BP |
3596 | if (toggle & OFPUTIL_PC_PORT_DOWN |
3597 | && (config & OFPUTIL_PC_PORT_DOWN | |
3598 | ? netdev_turn_flags_off(port->netdev, NETDEV_UP, NULL) | |
3599 | : netdev_turn_flags_on(port->netdev, NETDEV_UP, NULL))) { | |
3600 | /* We tried to bring the port up or down, but it failed, so don't | |
3601 | * update the "down" bit. */ | |
9e1fd49b | 3602 | toggle &= ~OFPUTIL_PC_PORT_DOWN; |
064af421 | 3603 | } |
abe529af | 3604 | |
2a6f78e0 BP |
3605 | if (toggle) { |
3606 | enum ofputil_port_config old_config = port->pp.config; | |
3607 | port->pp.config ^= toggle; | |
abe529af | 3608 | port->ofproto->ofproto_class->port_reconfigured(port, old_config); |
2a6f78e0 BP |
3609 | connmgr_send_port_status(port->ofproto->connmgr, ofconn, &port->pp, |
3610 | OFPPR_MODIFY); | |
064af421 BP |
3611 | } |
3612 | } | |
3613 | ||
90bf1e07 | 3614 | static enum ofperr |
1c38055d JR |
3615 | port_mod_start(struct ofconn *ofconn, struct ofputil_port_mod *pm, |
3616 | struct ofport **port) | |
064af421 | 3617 | { |
64ff1d96 | 3618 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
1c38055d JR |
3619 | |
3620 | *port = ofproto_get_port(p, pm->port_no); | |
3621 | if (!*port) { | |
3622 | return OFPERR_OFPPMFC_BAD_PORT; | |
3623 | } | |
3624 | if (!eth_addr_equals((*port)->pp.hw_addr, pm->hw_addr)) { | |
3625 | return OFPERR_OFPPMFC_BAD_HW_ADDR; | |
3626 | } | |
3627 | return 0; | |
3628 | } | |
3629 | ||
3630 | static void | |
3631 | port_mod_finish(struct ofconn *ofconn, struct ofputil_port_mod *pm, | |
3632 | struct ofport *port) | |
3633 | { | |
3634 | update_port_config(ofconn, port, pm->config, pm->mask); | |
3635 | if (pm->advertise) { | |
3636 | netdev_set_advertisements(port->netdev, pm->advertise); | |
3637 | } | |
3638 | } | |
3639 | ||
3640 | static enum ofperr | |
3641 | handle_port_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
3642 | { | |
9e1fd49b | 3643 | struct ofputil_port_mod pm; |
064af421 | 3644 | struct ofport *port; |
9e1fd49b | 3645 | enum ofperr error; |
064af421 | 3646 | |
76589937 | 3647 | error = reject_slave_controller(ofconn); |
9deba63b BP |
3648 | if (error) { |
3649 | return error; | |
3650 | } | |
064af421 | 3651 | |
18cc69d9 | 3652 | error = ofputil_decode_port_mod(oh, &pm, false); |
9e1fd49b BP |
3653 | if (error) { |
3654 | return error; | |
3655 | } | |
3656 | ||
1c38055d JR |
3657 | error = port_mod_start(ofconn, &pm, &port); |
3658 | if (!error) { | |
3659 | port_mod_finish(ofconn, &pm, port); | |
064af421 | 3660 | } |
1c38055d | 3661 | return error; |
064af421 BP |
3662 | } |
3663 | ||
90bf1e07 | 3664 | static enum ofperr |
3269c562 | 3665 | handle_desc_stats_request(struct ofconn *ofconn, |
982697a4 | 3666 | const struct ofp_header *request) |
064af421 | 3667 | { |
061bfea4 BP |
3668 | static const char *default_mfr_desc = "Nicira, Inc."; |
3669 | static const char *default_hw_desc = "Open vSwitch"; | |
3670 | static const char *default_sw_desc = VERSION; | |
3671 | static const char *default_serial_desc = "None"; | |
3672 | static const char *default_dp_desc = "None"; | |
3673 | ||
64ff1d96 | 3674 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 BP |
3675 | struct ofp_desc_stats *ods; |
3676 | struct ofpbuf *msg; | |
3677 | ||
982697a4 BP |
3678 | msg = ofpraw_alloc_stats_reply(request, 0); |
3679 | ods = ofpbuf_put_zeros(msg, sizeof *ods); | |
061bfea4 BP |
3680 | ovs_strlcpy(ods->mfr_desc, p->mfr_desc ? p->mfr_desc : default_mfr_desc, |
3681 | sizeof ods->mfr_desc); | |
3682 | ovs_strlcpy(ods->hw_desc, p->hw_desc ? p->hw_desc : default_hw_desc, | |
3683 | sizeof ods->hw_desc); | |
3684 | ovs_strlcpy(ods->sw_desc, p->sw_desc ? p->sw_desc : default_sw_desc, | |
3685 | sizeof ods->sw_desc); | |
3686 | ovs_strlcpy(ods->serial_num, | |
3687 | p->serial_desc ? p->serial_desc : default_serial_desc, | |
3688 | sizeof ods->serial_num); | |
3689 | ovs_strlcpy(ods->dp_desc, p->dp_desc ? p->dp_desc : default_dp_desc, | |
3690 | sizeof ods->dp_desc); | |
b0421aa2 | 3691 | ofconn_send_reply(ofconn, msg); |
064af421 BP |
3692 | |
3693 | return 0; | |
3694 | } | |
3695 | ||
90bf1e07 | 3696 | static enum ofperr |
3269c562 | 3697 | handle_table_stats_request(struct ofconn *ofconn, |
982697a4 | 3698 | const struct ofp_header *request) |
064af421 | 3699 | { |
3c1bb396 BP |
3700 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
3701 | struct ofputil_table_features *features; | |
08d1e234 | 3702 | struct ofputil_table_stats *stats; |
3c1bb396 | 3703 | struct ofpbuf *reply; |
6c1491fb | 3704 | size_t i; |
064af421 | 3705 | |
3c1bb396 | 3706 | query_tables(ofproto, &features, &stats); |
254750ce | 3707 | |
3c1bb396 BP |
3708 | reply = ofputil_encode_table_stats_reply(request); |
3709 | for (i = 0; i < ofproto->n_tables; i++) { | |
3710 | if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) { | |
3711 | ofputil_append_table_stats_reply(reply, &stats[i], &features[i]); | |
254750ce BP |
3712 | } |
3713 | } | |
3c1bb396 | 3714 | ofconn_send_reply(ofconn, reply); |
254750ce | 3715 | |
3c1bb396 | 3716 | free(features); |
08d1e234 | 3717 | free(stats); |
307975da | 3718 | |
064af421 BP |
3719 | return 0; |
3720 | } | |
3721 | ||
3c4e10fb BP |
3722 | static enum ofperr |
3723 | handle_table_features_request(struct ofconn *ofconn, | |
3724 | const struct ofp_header *request) | |
3725 | { | |
3726 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
0a2869d5 BP |
3727 | struct ofpbuf msg = ofpbuf_const_initializer(request, |
3728 | ntohs(request->length)); | |
3c4e10fb | 3729 | ofpraw_pull_assert(&msg); |
6fd6ed71 | 3730 | if (msg.size || ofpmp_more(request)) { |
3c4e10fb BP |
3731 | return OFPERR_OFPTFFC_EPERM; |
3732 | } | |
3733 | ||
0a2869d5 | 3734 | struct ofputil_table_features *features; |
3c4e10fb BP |
3735 | query_tables(ofproto, &features, NULL); |
3736 | ||
0a2869d5 | 3737 | struct ovs_list replies; |
3c4e10fb | 3738 | ofpmp_init(&replies, request); |
0a2869d5 | 3739 | for (size_t i = 0; i < ofproto->n_tables; i++) { |
3c4e10fb BP |
3740 | if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) { |
3741 | ofputil_append_table_features_reply(&features[i], &replies); | |
3742 | } | |
3743 | } | |
3744 | ofconn_send_replies(ofconn, &replies); | |
3745 | ||
3746 | free(features); | |
3747 | ||
3748 | return 0; | |
3749 | } | |
3750 | ||
6c6eedc5 SJ |
3751 | /* Returns the vacancy of 'oftable', a number that ranges from 0 (if the table |
3752 | * is full) to 100 (if the table is empty). | |
3753 | * | |
3754 | * A table without a limit on flows is considered to be empty. */ | |
3755 | static uint8_t | |
3756 | oftable_vacancy(const struct oftable *t) | |
3757 | { | |
3758 | return (!t->max_flows ? 100 | |
3759 | : t->n_flows >= t->max_flows ? 0 | |
3760 | : (t->max_flows - t->n_flows) * 100.0 / t->max_flows); | |
3761 | } | |
3762 | ||
bab86012 SJ |
3763 | static void |
3764 | query_table_desc__(struct ofputil_table_desc *td, | |
3765 | struct ofproto *ofproto, uint8_t table_id) | |
3766 | { | |
6c6eedc5 | 3767 | const struct oftable *t = &ofproto->tables[table_id]; |
bab86012 SJ |
3768 | |
3769 | td->table_id = table_id; | |
6c6eedc5 | 3770 | td->eviction = (t->eviction & EVICTION_OPENFLOW |
bab86012 SJ |
3771 | ? OFPUTIL_TABLE_EVICTION_ON |
3772 | : OFPUTIL_TABLE_EVICTION_OFF); | |
3773 | td->eviction_flags = OFPROTO_EVICTION_FLAGS; | |
6c6eedc5 | 3774 | td->vacancy = (t->vacancy_event |
bab86012 SJ |
3775 | ? OFPUTIL_TABLE_VACANCY_ON |
3776 | : OFPUTIL_TABLE_VACANCY_OFF); | |
6c6eedc5 SJ |
3777 | td->table_vacancy.vacancy_down = t->vacancy_down; |
3778 | td->table_vacancy.vacancy_up = t->vacancy_up; | |
3779 | td->table_vacancy.vacancy = oftable_vacancy(t); | |
bab86012 SJ |
3780 | } |
3781 | ||
03c72922 BP |
3782 | /* This function queries the database for dumping table-desc. */ |
3783 | static void | |
3784 | query_tables_desc(struct ofproto *ofproto, struct ofputil_table_desc **descp) | |
3785 | { | |
3786 | struct ofputil_table_desc *table_desc; | |
3787 | size_t i; | |
3788 | ||
3789 | table_desc = *descp = xcalloc(ofproto->n_tables, sizeof *table_desc); | |
3790 | for (i = 0; i < ofproto->n_tables; i++) { | |
3791 | struct ofputil_table_desc *td = &table_desc[i]; | |
bab86012 | 3792 | query_table_desc__(td, ofproto, i); |
03c72922 BP |
3793 | } |
3794 | } | |
3795 | ||
3796 | /* Function to handle dump-table-desc request. */ | |
3797 | static enum ofperr | |
3798 | handle_table_desc_request(struct ofconn *ofconn, | |
3799 | const struct ofp_header *request) | |
3800 | { | |
3801 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
3802 | struct ofputil_table_desc *table_desc; | |
3803 | struct ovs_list replies; | |
3804 | size_t i; | |
3805 | ||
3806 | query_tables_desc(ofproto, &table_desc); | |
3807 | ofpmp_init(&replies, request); | |
3808 | for (i = 0; i < ofproto->n_tables; i++) { | |
3809 | if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) { | |
3810 | ofputil_append_table_desc_reply(&table_desc[i], &replies, | |
3811 | request->version); | |
3812 | } | |
3813 | } | |
3814 | ofconn_send_replies(ofconn, &replies); | |
3815 | free(table_desc); | |
3816 | return 0; | |
3817 | } | |
3818 | ||
6c6eedc5 SJ |
3819 | /* This function determines and sends the vacancy event, based on the value |
3820 | * of current vacancy and threshold vacancy. If the current vacancy is less | |
3821 | * than or equal to vacancy_down, vacancy up events must be enabled, and when | |
3822 | * the current vacancy is greater or equal to vacancy_up, vacancy down events | |
3823 | * must be enabled. */ | |
3824 | static void | |
3825 | send_table_status(struct ofproto *ofproto, uint8_t table_id) | |
3826 | { | |
3827 | struct oftable *t = &ofproto->tables[table_id]; | |
3828 | if (!t->vacancy_event) { | |
3829 | return; | |
3830 | } | |
3831 | ||
3832 | uint8_t vacancy = oftable_vacancy(t); | |
3833 | enum ofp14_table_reason event; | |
3834 | if (vacancy < t->vacancy_down) { | |
3835 | event = OFPTR_VACANCY_DOWN; | |
3836 | } else if (vacancy > t->vacancy_up) { | |
3837 | event = OFPTR_VACANCY_UP; | |
3838 | } else { | |
3839 | return; | |
3840 | } | |
3841 | ||
3842 | if (event == t->vacancy_event) { | |
3843 | struct ofputil_table_desc td; | |
3844 | query_table_desc__(&td, ofproto, table_id); | |
3845 | connmgr_send_table_status(ofproto->connmgr, &td, event); | |
3846 | ||
3847 | t->vacancy_event = (event == OFPTR_VACANCY_DOWN | |
3848 | ? OFPTR_VACANCY_UP | |
3849 | : OFPTR_VACANCY_DOWN); | |
3850 | } | |
3851 | } | |
3852 | ||
abaad8cf | 3853 | static void |
ca6ba700 | 3854 | append_port_stat(struct ofport *port, struct ovs_list *replies) |
abaad8cf | 3855 | { |
f8e4867e | 3856 | struct ofputil_port_stats ops = { .port_no = port->pp.port_no }; |
abaad8cf | 3857 | |
65e0be10 BP |
3858 | calc_duration(port->created, time_msec(), |
3859 | &ops.duration_sec, &ops.duration_nsec); | |
3860 | ||
d295e8e9 JP |
3861 | /* Intentionally ignore return value, since errors will set |
3862 | * 'stats' to all-1s, which is correct for OpenFlow, and | |
abaad8cf | 3863 | * netdev_get_stats() will log errors. */ |
f8e4867e SH |
3864 | ofproto_port_get_stats(port, &ops.stats); |
3865 | ||
3866 | ofputil_append_port_stat(replies, &ops); | |
abaad8cf JP |
3867 | } |
3868 | ||
70ae4f93 BP |
3869 | static void |
3870 | handle_port_request(struct ofconn *ofconn, | |
3871 | const struct ofp_header *request, ofp_port_t port_no, | |
ca6ba700 | 3872 | void (*cb)(struct ofport *, struct ovs_list *replies)) |
064af421 | 3873 | { |
70ae4f93 | 3874 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 | 3875 | struct ofport *port; |
ca6ba700 | 3876 | struct ovs_list replies; |
064af421 | 3877 | |
982697a4 | 3878 | ofpmp_init(&replies, request); |
7f05e7ab | 3879 | if (port_no != OFPP_ANY) { |
70ae4f93 | 3880 | port = ofproto_get_port(ofproto, port_no); |
abaad8cf | 3881 | if (port) { |
70ae4f93 | 3882 | cb(port, &replies); |
abaad8cf JP |
3883 | } |
3884 | } else { | |
70ae4f93 BP |
3885 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
3886 | cb(port, &replies); | |
abaad8cf | 3887 | } |
064af421 BP |
3888 | } |
3889 | ||
63f2140a | 3890 | ofconn_send_replies(ofconn, &replies); |
70ae4f93 BP |
3891 | } |
3892 | ||
3893 | static enum ofperr | |
3894 | handle_port_stats_request(struct ofconn *ofconn, | |
3895 | const struct ofp_header *request) | |
3896 | { | |
3897 | ofp_port_t port_no; | |
3898 | enum ofperr error; | |
3899 | ||
3900 | error = ofputil_decode_port_stats_request(request, &port_no); | |
3901 | if (!error) { | |
3902 | handle_port_request(ofconn, request, port_no, append_port_stat); | |
3903 | } | |
3904 | return error; | |
3905 | } | |
3906 | ||
3907 | static void | |
ca6ba700 | 3908 | append_port_desc(struct ofport *port, struct ovs_list *replies) |
70ae4f93 BP |
3909 | { |
3910 | ofputil_append_port_desc_stats_reply(&port->pp, replies); | |
064af421 BP |
3911 | } |
3912 | ||
2be393ed JP |
3913 | static enum ofperr |
3914 | handle_port_desc_stats_request(struct ofconn *ofconn, | |
982697a4 | 3915 | const struct ofp_header *request) |
2be393ed | 3916 | { |
70ae4f93 BP |
3917 | ofp_port_t port_no; |
3918 | enum ofperr error; | |
2be393ed | 3919 | |
70ae4f93 BP |
3920 | error = ofputil_decode_port_desc_stats_request(request, &port_no); |
3921 | if (!error) { | |
3922 | handle_port_request(ofconn, request, port_no, append_port_desc); | |
2be393ed | 3923 | } |
70ae4f93 | 3924 | return error; |
2be393ed JP |
3925 | } |
3926 | ||
98eaac36 JR |
3927 | static uint32_t |
3928 | hash_cookie(ovs_be64 cookie) | |
3929 | { | |
965607c8 | 3930 | return hash_uint64((OVS_FORCE uint64_t)cookie); |
98eaac36 JR |
3931 | } |
3932 | ||
3933 | static void | |
3934 | cookies_insert(struct ofproto *ofproto, struct rule *rule) | |
2c916028 | 3935 | OVS_REQUIRES(ofproto_mutex) |
98eaac36 JR |
3936 | { |
3937 | hindex_insert(&ofproto->cookies, &rule->cookie_node, | |
3938 | hash_cookie(rule->flow_cookie)); | |
3939 | } | |
3940 | ||
3941 | static void | |
3942 | cookies_remove(struct ofproto *ofproto, struct rule *rule) | |
2c916028 | 3943 | OVS_REQUIRES(ofproto_mutex) |
98eaac36 JR |
3944 | { |
3945 | hindex_remove(&ofproto->cookies, &rule->cookie_node); | |
3946 | } | |
3947 | ||
c6ebb8fb | 3948 | static void |
65e0be10 BP |
3949 | calc_duration(long long int start, long long int now, |
3950 | uint32_t *sec, uint32_t *nsec) | |
c6ebb8fb | 3951 | { |
f27f2134 | 3952 | long long int msecs = now - start; |
588cd7b5 BP |
3953 | *sec = msecs / 1000; |
3954 | *nsec = (msecs % 1000) * (1000 * 1000); | |
3955 | } | |
3956 | ||
48266274 | 3957 | /* Checks whether 'table_id' is 0xff or a valid table ID in 'ofproto'. Returns |
554764d1 SH |
3958 | * true if 'table_id' is OK, false otherwise. */ |
3959 | static bool | |
48266274 BP |
3960 | check_table_id(const struct ofproto *ofproto, uint8_t table_id) |
3961 | { | |
554764d1 | 3962 | return table_id == OFPTT_ALL || table_id < ofproto->n_tables; |
48266274 BP |
3963 | } |
3964 | ||
5c67e4af | 3965 | static struct oftable * |
d4ce8a49 | 3966 | next_visible_table(const struct ofproto *ofproto, uint8_t table_id) |
5c67e4af BP |
3967 | { |
3968 | struct oftable *table; | |
3969 | ||
3970 | for (table = &ofproto->tables[table_id]; | |
3971 | table < &ofproto->tables[ofproto->n_tables]; | |
3972 | table++) { | |
3973 | if (!(table->flags & OFTABLE_HIDDEN)) { | |
3974 | return table; | |
3975 | } | |
3976 | } | |
3977 | ||
3978 | return NULL; | |
3979 | } | |
3980 | ||
d0918789 | 3981 | static struct oftable * |
d4ce8a49 | 3982 | first_matching_table(const struct ofproto *ofproto, uint8_t table_id) |
064af421 | 3983 | { |
6c1491fb | 3984 | if (table_id == 0xff) { |
5c67e4af | 3985 | return next_visible_table(ofproto, 0); |
6c1491fb BP |
3986 | } else if (table_id < ofproto->n_tables) { |
3987 | return &ofproto->tables[table_id]; | |
a02e5331 | 3988 | } else { |
6c1491fb | 3989 | return NULL; |
a02e5331 | 3990 | } |
064af421 BP |
3991 | } |
3992 | ||
d0918789 | 3993 | static struct oftable * |
d4ce8a49 BP |
3994 | next_matching_table(const struct ofproto *ofproto, |
3995 | const struct oftable *table, uint8_t table_id) | |
6c1491fb | 3996 | { |
5c67e4af BP |
3997 | return (table_id == 0xff |
3998 | ? next_visible_table(ofproto, (table - ofproto->tables) + 1) | |
6c1491fb BP |
3999 | : NULL); |
4000 | } | |
4001 | ||
d0918789 | 4002 | /* Assigns TABLE to each oftable, in turn, that matches TABLE_ID in OFPROTO: |
6c1491fb BP |
4003 | * |
4004 | * - If TABLE_ID is 0xff, this iterates over every classifier table in | |
5c67e4af | 4005 | * OFPROTO, skipping tables marked OFTABLE_HIDDEN. |
6c1491fb BP |
4006 | * |
4007 | * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates | |
5c67e4af BP |
4008 | * only once, for that table. (This can be used to access tables marked |
4009 | * OFTABLE_HIDDEN.) | |
6c1491fb | 4010 | * |
48266274 BP |
4011 | * - Otherwise, TABLE_ID isn't valid for OFPROTO, so the loop won't be |
4012 | * entered at all. (Perhaps you should have validated TABLE_ID with | |
4013 | * check_table_id().) | |
6c1491fb BP |
4014 | * |
4015 | * All parameters are evaluated multiple times. | |
4016 | */ | |
d0918789 BP |
4017 | #define FOR_EACH_MATCHING_TABLE(TABLE, TABLE_ID, OFPROTO) \ |
4018 | for ((TABLE) = first_matching_table(OFPROTO, TABLE_ID); \ | |
4019 | (TABLE) != NULL; \ | |
4020 | (TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID)) | |
6c1491fb | 4021 | |
a9b22b7f BP |
4022 | /* Initializes 'criteria' in a straightforward way based on the other |
4023 | * parameters. | |
4024 | * | |
dd51dae2 BP |
4025 | * By default, the criteria include flows that are read-only, on the assumption |
4026 | * that the collected flows won't be modified. Call rule_criteria_require_rw() | |
4027 | * if flows will be modified. | |
4028 | * | |
a9b22b7f BP |
4029 | * For "loose" matching, the 'priority' parameter is unimportant and may be |
4030 | * supplied as 0. */ | |
4031 | static void | |
4032 | rule_criteria_init(struct rule_criteria *criteria, uint8_t table_id, | |
18721c4a | 4033 | const struct match *match, int priority, |
44e0c35d | 4034 | ovs_version_t version, ovs_be64 cookie, |
18721c4a JR |
4035 | ovs_be64 cookie_mask, ofp_port_t out_port, |
4036 | uint32_t out_group) | |
a9b22b7f BP |
4037 | { |
4038 | criteria->table_id = table_id; | |
bd53aa17 JR |
4039 | cls_rule_init(&criteria->cr, match, priority); |
4040 | criteria->version = version; | |
a9b22b7f BP |
4041 | criteria->cookie = cookie; |
4042 | criteria->cookie_mask = cookie_mask; | |
4043 | criteria->out_port = out_port; | |
4044 | criteria->out_group = out_group; | |
dd51dae2 BP |
4045 | |
4046 | /* We ordinarily want to skip hidden rules, but there has to be a way for | |
4047 | * code internal to OVS to modify and delete them, so if the criteria | |
4048 | * specify a priority that can only be for a hidden flow, then allow hidden | |
4049 | * rules to be selected. (This doesn't allow OpenFlow clients to meddle | |
4050 | * with hidden flows because OpenFlow uses only a 16-bit field to specify | |
4051 | * priority.) */ | |
4052 | criteria->include_hidden = priority > UINT16_MAX; | |
4053 | ||
4054 | /* We assume that the criteria are being used to collect flows for reading | |
4055 | * but not modification. Thus, we should collect read-only flows. */ | |
4056 | criteria->include_readonly = true; | |
4057 | } | |
4058 | ||
4059 | /* By default, criteria initialized by rule_criteria_init() will match flows | |
4060 | * that are read-only, on the assumption that the collected flows won't be | |
4061 | * modified. Call this function to match only flows that are be modifiable. | |
4062 | * | |
4063 | * Specify 'can_write_readonly' as false in ordinary circumstances, true if the | |
4064 | * caller has special privileges that allow it to modify even "read-only" | |
4065 | * flows. */ | |
4066 | static void | |
4067 | rule_criteria_require_rw(struct rule_criteria *criteria, | |
4068 | bool can_write_readonly) | |
4069 | { | |
4070 | criteria->include_readonly = can_write_readonly; | |
a9b22b7f BP |
4071 | } |
4072 | ||
4073 | static void | |
4074 | rule_criteria_destroy(struct rule_criteria *criteria) | |
4075 | { | |
4076 | cls_rule_destroy(&criteria->cr); | |
4077 | } | |
4078 | ||
39c94593 JR |
4079 | /* Schedules postponed removal of rules, destroys 'rules'. */ |
4080 | static void | |
cc099268 | 4081 | remove_rules_postponed(struct rule_collection *rules) |
39c94593 JR |
4082 | OVS_REQUIRES(ofproto_mutex) |
4083 | { | |
fe59694b JR |
4084 | if (rule_collection_n(rules) > 0) { |
4085 | if (rule_collection_n(rules) == 1) { | |
4086 | ovsrcu_postpone(remove_rule_rcu, rule_collection_rules(rules)[0]); | |
4087 | rule_collection_init(rules); | |
39c94593 JR |
4088 | } else { |
4089 | ovsrcu_postpone(remove_rules_rcu, rule_collection_detach(rules)); | |
4090 | } | |
4091 | } | |
4092 | } | |
4093 | ||
5d08a275 JR |
4094 | /* Schedules postponed removal of groups, destroys 'groups'. */ |
4095 | static void | |
4096 | remove_groups_postponed(struct group_collection *groups) | |
4097 | OVS_REQUIRES(ofproto_mutex) | |
4098 | { | |
4099 | if (group_collection_n(groups) > 0) { | |
4100 | if (group_collection_n(groups) == 1) { | |
4101 | ovsrcu_postpone(remove_group_rcu, | |
4102 | group_collection_groups(groups)[0]); | |
4103 | group_collection_init(groups); | |
4104 | } else { | |
4105 | ovsrcu_postpone(remove_groups_rcu, | |
4106 | group_collection_detach(groups)); | |
4107 | } | |
4108 | } | |
4109 | } | |
4110 | ||
dd51dae2 BP |
4111 | /* Checks whether 'rule' matches 'c' and, if so, adds it to 'rules'. This |
4112 | * function verifies most of the criteria in 'c' itself, but the caller must | |
4113 | * check 'c->cr' itself. | |
4114 | * | |
2b7b1427 | 4115 | * Rules that have already been marked for removal are not collected. |
ce59413f | 4116 | * |
dd51dae2 | 4117 | * Increments '*n_readonly' if 'rule' wasn't added because it's read-only (and |
b20f4073 BP |
4118 | * 'c' only includes modifiable rules). */ |
4119 | static void | |
a9b22b7f | 4120 | collect_rule(struct rule *rule, const struct rule_criteria *c, |
dd51dae2 | 4121 | struct rule_collection *rules, size_t *n_readonly) |
15aaf599 | 4122 | OVS_REQUIRES(ofproto_mutex) |
6c1d7642 | 4123 | { |
dd51dae2 BP |
4124 | if ((c->table_id == rule->table_id || c->table_id == 0xff) |
4125 | && ofproto_rule_has_out_port(rule, c->out_port) | |
4126 | && ofproto_rule_has_out_group(rule, c->out_group) | |
4127 | && !((rule->flow_cookie ^ c->cookie) & c->cookie_mask) | |
ce59413f | 4128 | && (!rule_is_hidden(rule) || c->include_hidden) |
bd53aa17 | 4129 | && cls_rule_visible_in_version(&rule->cr, c->version)) { |
dd51dae2 | 4130 | /* Rule matches all the criteria... */ |
834fe5cb | 4131 | if (!rule_is_readonly(rule) || c->include_readonly) { |
dd51dae2 | 4132 | /* ...add it. */ |
a8e547c1 | 4133 | rule_collection_add(rules, rule); |
dd51dae2 BP |
4134 | } else { |
4135 | /* ...except it's read-only. */ | |
4136 | ++*n_readonly; | |
6c1d7642 | 4137 | } |
6c1d7642 BP |
4138 | } |
4139 | } | |
4140 | ||
a9b22b7f BP |
4141 | /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches |
4142 | * on classifiers rules are done in the "loose" way required for OpenFlow | |
4143 | * OFPFC_MODIFY and OFPFC_DELETE requests. Puts the selected rules on list | |
9ed18e46 BP |
4144 | * 'rules'. |
4145 | * | |
9ed18e46 | 4146 | * Returns 0 on success, otherwise an OpenFlow error code. */ |
90bf1e07 | 4147 | static enum ofperr |
a9b22b7f | 4148 | collect_rules_loose(struct ofproto *ofproto, |
a8e547c1 BP |
4149 | const struct rule_criteria *criteria, |
4150 | struct rule_collection *rules) | |
15aaf599 | 4151 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 4152 | { |
d0918789 | 4153 | struct oftable *table; |
554764d1 | 4154 | enum ofperr error = 0; |
dd51dae2 | 4155 | size_t n_readonly = 0; |
48266274 | 4156 | |
a8e547c1 BP |
4157 | rule_collection_init(rules); |
4158 | ||
554764d1 SH |
4159 | if (!check_table_id(ofproto, criteria->table_id)) { |
4160 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
a8e547c1 | 4161 | goto exit; |
48266274 | 4162 | } |
9ed18e46 | 4163 | |
b8266395 | 4164 | if (criteria->cookie_mask == OVS_BE64_MAX) { |
98eaac36 JR |
4165 | struct rule *rule; |
4166 | ||
a9b22b7f BP |
4167 | HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node, |
4168 | hash_cookie(criteria->cookie), | |
98eaac36 | 4169 | &ofproto->cookies) { |
a9b22b7f | 4170 | if (cls_rule_is_loose_match(&rule->cr, &criteria->cr.match)) { |
b20f4073 | 4171 | collect_rule(rule, criteria, rules, &n_readonly); |
98eaac36 JR |
4172 | } |
4173 | } | |
6c1d7642 | 4174 | } else { |
a9b22b7f | 4175 | FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) { |
6c1d7642 | 4176 | struct rule *rule; |
9ed18e46 | 4177 | |
bd53aa17 JR |
4178 | CLS_FOR_EACH_TARGET (rule, cr, &table->cls, &criteria->cr, |
4179 | criteria->version) { | |
b20f4073 | 4180 | collect_rule(rule, criteria, rules, &n_readonly); |
9ed18e46 BP |
4181 | } |
4182 | } | |
4183 | } | |
48d28ac1 | 4184 | |
a8e547c1 | 4185 | exit: |
fe59694b | 4186 | if (!error && !rule_collection_n(rules) && n_readonly) { |
dd51dae2 BP |
4187 | /* We didn't find any rules to modify. We did find some read-only |
4188 | * rules that we're not allowed to modify, so report that. */ | |
4189 | error = OFPERR_OFPBRC_EPERM; | |
4190 | } | |
a8e547c1 BP |
4191 | if (error) { |
4192 | rule_collection_destroy(rules); | |
4193 | } | |
48d28ac1 | 4194 | return error; |
9ed18e46 BP |
4195 | } |
4196 | ||
a9b22b7f BP |
4197 | /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches |
4198 | * on classifiers rules are done in the "strict" way required for OpenFlow | |
4199 | * OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests. Puts the selected | |
4200 | * rules on list 'rules'. | |
9ed18e46 | 4201 | * |
9ed18e46 | 4202 | * Returns 0 on success, otherwise an OpenFlow error code. */ |
90bf1e07 | 4203 | static enum ofperr |
a9b22b7f | 4204 | collect_rules_strict(struct ofproto *ofproto, |
a8e547c1 BP |
4205 | const struct rule_criteria *criteria, |
4206 | struct rule_collection *rules) | |
15aaf599 | 4207 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 4208 | { |
d0918789 | 4209 | struct oftable *table; |
dd51dae2 | 4210 | size_t n_readonly = 0; |
d51c8b71 | 4211 | enum ofperr error = 0; |
48266274 | 4212 | |
a8e547c1 BP |
4213 | rule_collection_init(rules); |
4214 | ||
554764d1 SH |
4215 | if (!check_table_id(ofproto, criteria->table_id)) { |
4216 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
a8e547c1 | 4217 | goto exit; |
48266274 | 4218 | } |
9ed18e46 | 4219 | |
b8266395 | 4220 | if (criteria->cookie_mask == OVS_BE64_MAX) { |
98eaac36 JR |
4221 | struct rule *rule; |
4222 | ||
a9b22b7f BP |
4223 | HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node, |
4224 | hash_cookie(criteria->cookie), | |
98eaac36 | 4225 | &ofproto->cookies) { |
a9b22b7f | 4226 | if (cls_rule_equal(&rule->cr, &criteria->cr)) { |
b20f4073 | 4227 | collect_rule(rule, criteria, rules, &n_readonly); |
98eaac36 JR |
4228 | } |
4229 | } | |
6c1d7642 | 4230 | } else { |
a9b22b7f | 4231 | FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) { |
6c1d7642 | 4232 | struct rule *rule; |
9ed18e46 | 4233 | |
a9b22b7f | 4234 | rule = rule_from_cls_rule(classifier_find_rule_exactly( |
bd53aa17 JR |
4235 | &table->cls, &criteria->cr, |
4236 | criteria->version)); | |
6c1d7642 | 4237 | if (rule) { |
b20f4073 | 4238 | collect_rule(rule, criteria, rules, &n_readonly); |
9ed18e46 BP |
4239 | } |
4240 | } | |
4241 | } | |
48d28ac1 | 4242 | |
a8e547c1 | 4243 | exit: |
fe59694b | 4244 | if (!error && !rule_collection_n(rules) && n_readonly) { |
b20f4073 BP |
4245 | /* We didn't find any rules to modify. We did find some read-only |
4246 | * rules that we're not allowed to modify, so report that. */ | |
4247 | error = OFPERR_OFPBRC_EPERM; | |
4248 | } | |
a8e547c1 BP |
4249 | if (error) { |
4250 | rule_collection_destroy(rules); | |
4251 | } | |
6c1d7642 | 4252 | return error; |
9ed18e46 BP |
4253 | } |
4254 | ||
f27f2134 BP |
4255 | /* Returns 'age_ms' (a duration in milliseconds), converted to seconds and |
4256 | * forced into the range of a uint16_t. */ | |
4257 | static int | |
4258 | age_secs(long long int age_ms) | |
4259 | { | |
4260 | return (age_ms < 0 ? 0 | |
4261 | : age_ms >= UINT16_MAX * 1000 ? UINT16_MAX | |
4262 | : (unsigned int) age_ms / 1000); | |
4263 | } | |
4264 | ||
90bf1e07 | 4265 | static enum ofperr |
63f2140a | 4266 | handle_flow_stats_request(struct ofconn *ofconn, |
982697a4 | 4267 | const struct ofp_header *request) |
15aaf599 | 4268 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 4269 | { |
64ff1d96 | 4270 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 4271 | struct ofputil_flow_stats_request fsr; |
a9b22b7f | 4272 | struct rule_criteria criteria; |
a8e547c1 | 4273 | struct rule_collection rules; |
ca6ba700 | 4274 | struct ovs_list replies; |
90bf1e07 | 4275 | enum ofperr error; |
09246b99 | 4276 | |
982697a4 | 4277 | error = ofputil_decode_flow_stats_request(&fsr, request); |
09246b99 BP |
4278 | if (error) { |
4279 | return error; | |
4280 | } | |
4281 | ||
44e0c35d | 4282 | rule_criteria_init(&criteria, fsr.table_id, &fsr.match, 0, OVS_VERSION_MAX, |
2b7b1427 JR |
4283 | fsr.cookie, fsr.cookie_mask, fsr.out_port, |
4284 | fsr.out_group); | |
15aaf599 BP |
4285 | |
4286 | ovs_mutex_lock(&ofproto_mutex); | |
a9b22b7f BP |
4287 | error = collect_rules_loose(ofproto, &criteria, &rules); |
4288 | rule_criteria_destroy(&criteria); | |
15aaf599 BP |
4289 | if (!error) { |
4290 | rule_collection_ref(&rules); | |
4291 | } | |
4292 | ovs_mutex_unlock(&ofproto_mutex); | |
4293 | ||
9ed18e46 BP |
4294 | if (error) { |
4295 | return error; | |
4296 | } | |
5ecc9d81 | 4297 | |
982697a4 | 4298 | ofpmp_init(&replies, request); |
fe59694b JR |
4299 | struct rule *rule; |
4300 | RULE_COLLECTION_FOR_EACH (rule, &rules) { | |
f27f2134 | 4301 | long long int now = time_msec(); |
9ed18e46 | 4302 | struct ofputil_flow_stats fs; |
15aaf599 | 4303 | long long int created, used, modified; |
dc723c44 | 4304 | const struct rule_actions *actions; |
15aaf599 | 4305 | enum ofputil_flow_mod_flags flags; |
a3779dbc | 4306 | |
d10976b7 | 4307 | ovs_mutex_lock(&rule->mutex); |
15aaf599 | 4308 | fs.cookie = rule->flow_cookie; |
a3779dbc EJ |
4309 | fs.idle_timeout = rule->idle_timeout; |
4310 | fs.hard_timeout = rule->hard_timeout; | |
ca26eb44 | 4311 | fs.importance = rule->importance; |
15aaf599 | 4312 | created = rule->created; |
15aaf599 | 4313 | modified = rule->modified; |
06a0f3e2 | 4314 | actions = rule_get_actions(rule); |
15aaf599 | 4315 | flags = rule->flags; |
d10976b7 | 4316 | ovs_mutex_unlock(&rule->mutex); |
a3779dbc | 4317 | |
dc437090 JR |
4318 | ofproto->ofproto_class->rule_get_stats(rule, &fs.packet_count, |
4319 | &fs.byte_count, &used); | |
4320 | ||
15aaf599 BP |
4321 | minimatch_expand(&rule->cr.match, &fs.match); |
4322 | fs.table_id = rule->table_id; | |
4323 | calc_duration(created, now, &fs.duration_sec, &fs.duration_nsec); | |
4324 | fs.priority = rule->cr.priority; | |
4325 | fs.idle_age = age_secs(now - used); | |
4326 | fs.hard_age = age_secs(now - modified); | |
15aaf599 BP |
4327 | fs.ofpacts = actions->ofpacts; |
4328 | fs.ofpacts_len = actions->ofpacts_len; | |
3f517bcd | 4329 | |
15aaf599 | 4330 | fs.flags = flags; |
9ed18e46 | 4331 | ofputil_append_flow_stats_reply(&fs, &replies); |
3c4486a5 | 4332 | } |
15aaf599 BP |
4333 | |
4334 | rule_collection_unref(&rules); | |
a8e547c1 BP |
4335 | rule_collection_destroy(&rules); |
4336 | ||
63f2140a | 4337 | ofconn_send_replies(ofconn, &replies); |
5ecc9d81 | 4338 | |
09246b99 BP |
4339 | return 0; |
4340 | } | |
4341 | ||
4f2cad2c | 4342 | static void |
3394b5b6 | 4343 | flow_stats_ds(struct rule *rule, struct ds *results) |
4f2cad2c | 4344 | { |
4f2cad2c | 4345 | uint64_t packet_count, byte_count; |
dc723c44 | 4346 | const struct rule_actions *actions; |
dc437090 | 4347 | long long int created, used; |
4f2cad2c | 4348 | |
dc437090 JR |
4349 | rule->ofproto->ofproto_class->rule_get_stats(rule, &packet_count, |
4350 | &byte_count, &used); | |
4f2cad2c | 4351 | |
15aaf599 | 4352 | ovs_mutex_lock(&rule->mutex); |
06a0f3e2 | 4353 | actions = rule_get_actions(rule); |
15aaf599 BP |
4354 | created = rule->created; |
4355 | ovs_mutex_unlock(&rule->mutex); | |
4356 | ||
6c1491fb BP |
4357 | if (rule->table_id != 0) { |
4358 | ds_put_format(results, "table_id=%"PRIu8", ", rule->table_id); | |
4359 | } | |
15aaf599 | 4360 | ds_put_format(results, "duration=%llds, ", (time_msec() - created) / 1000); |
4f2cad2c JP |
4361 | ds_put_format(results, "n_packets=%"PRIu64", ", packet_count); |
4362 | ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count); | |
cb833cf6 | 4363 | cls_rule_format(&rule->cr, results); |
a5df0e72 | 4364 | ds_put_char(results, ','); |
15aaf599 | 4365 | |
455ecd77 | 4366 | ds_put_cstr(results, "actions="); |
15aaf599 BP |
4367 | ofpacts_format(actions->ofpacts, actions->ofpacts_len, results); |
4368 | ||
4f2cad2c JP |
4369 | ds_put_cstr(results, "\n"); |
4370 | } | |
4371 | ||
d295e8e9 | 4372 | /* Adds a pretty-printed description of all flows to 'results', including |
ee8b231c | 4373 | * hidden flows (e.g., set up by in-band control). */ |
4f2cad2c JP |
4374 | void |
4375 | ofproto_get_all_flows(struct ofproto *p, struct ds *results) | |
4376 | { | |
d0918789 | 4377 | struct oftable *table; |
6c1491fb | 4378 | |
d0918789 | 4379 | OFPROTO_FOR_EACH_TABLE (table, p) { |
6c1491fb | 4380 | struct rule *rule; |
064af421 | 4381 | |
5f0476ce | 4382 | CLS_FOR_EACH (rule, cr, &table->cls) { |
6c1491fb BP |
4383 | flow_stats_ds(rule, results); |
4384 | } | |
064af421 | 4385 | } |
064af421 BP |
4386 | } |
4387 | ||
b5827b24 BP |
4388 | /* Obtains the NetFlow engine type and engine ID for 'ofproto' into |
4389 | * '*engine_type' and '*engine_id', respectively. */ | |
4390 | void | |
4391 | ofproto_get_netflow_ids(const struct ofproto *ofproto, | |
4392 | uint8_t *engine_type, uint8_t *engine_id) | |
4393 | { | |
abe529af | 4394 | ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id); |
b5827b24 BP |
4395 | } |
4396 | ||
8f5514fe AW |
4397 | /* Checks the status change of CFM on 'ofport'. |
4398 | * | |
4399 | * Returns true if 'ofproto_class' does not support 'cfm_status_changed'. */ | |
4400 | bool | |
4401 | ofproto_port_cfm_status_changed(struct ofproto *ofproto, ofp_port_t ofp_port) | |
4402 | { | |
4403 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
4404 | return (ofport && ofproto->ofproto_class->cfm_status_changed | |
4405 | ? ofproto->ofproto_class->cfm_status_changed(ofport) | |
4406 | : true); | |
4407 | } | |
4408 | ||
88bf179a AW |
4409 | /* Checks the status of CFM configured on 'ofp_port' within 'ofproto'. |
4410 | * Returns 0 if the port's CFM status was successfully stored into | |
4411 | * '*status'. Returns positive errno if the port did not have CFM | |
8f5514fe | 4412 | * configured. |
9a9e3786 | 4413 | * |
88bf179a AW |
4414 | * The caller must provide and own '*status', and must free 'status->rmps'. |
4415 | * '*status' is indeterminate if the return value is non-zero. */ | |
4416 | int | |
4e022ec0 | 4417 | ofproto_port_get_cfm_status(const struct ofproto *ofproto, ofp_port_t ofp_port, |
685acfd9 | 4418 | struct cfm_status *status) |
3967a833 MM |
4419 | { |
4420 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
88bf179a AW |
4421 | return (ofport && ofproto->ofproto_class->get_cfm_status |
4422 | ? ofproto->ofproto_class->get_cfm_status(ofport, status) | |
4423 | : EOPNOTSUPP); | |
3967a833 MM |
4424 | } |
4425 | ||
90bf1e07 | 4426 | static enum ofperr |
76c93b22 | 4427 | handle_aggregate_stats_request(struct ofconn *ofconn, |
982697a4 | 4428 | const struct ofp_header *oh) |
15aaf599 | 4429 | OVS_EXCLUDED(ofproto_mutex) |
27d34fce | 4430 | { |
76c93b22 | 4431 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 4432 | struct ofputil_flow_stats_request request; |
76c93b22 | 4433 | struct ofputil_aggregate_stats stats; |
5e9d0469 | 4434 | bool unknown_packets, unknown_bytes; |
a9b22b7f | 4435 | struct rule_criteria criteria; |
a8e547c1 | 4436 | struct rule_collection rules; |
76c93b22 | 4437 | struct ofpbuf *reply; |
90bf1e07 | 4438 | enum ofperr error; |
27d34fce | 4439 | |
982697a4 | 4440 | error = ofputil_decode_flow_stats_request(&request, oh); |
76c93b22 BP |
4441 | if (error) { |
4442 | return error; | |
4443 | } | |
5ecc9d81 | 4444 | |
a9b22b7f | 4445 | rule_criteria_init(&criteria, request.table_id, &request.match, 0, |
44e0c35d | 4446 | OVS_VERSION_MAX, request.cookie, request.cookie_mask, |
a9b22b7f | 4447 | request.out_port, request.out_group); |
15aaf599 BP |
4448 | |
4449 | ovs_mutex_lock(&ofproto_mutex); | |
a9b22b7f BP |
4450 | error = collect_rules_loose(ofproto, &criteria, &rules); |
4451 | rule_criteria_destroy(&criteria); | |
15aaf599 BP |
4452 | if (!error) { |
4453 | rule_collection_ref(&rules); | |
4454 | } | |
4455 | ovs_mutex_unlock(&ofproto_mutex); | |
4456 | ||
9ed18e46 BP |
4457 | if (error) { |
4458 | return error; | |
4459 | } | |
3c4486a5 | 4460 | |
9ed18e46 | 4461 | memset(&stats, 0, sizeof stats); |
5e9d0469 | 4462 | unknown_packets = unknown_bytes = false; |
fe59694b JR |
4463 | |
4464 | struct rule *rule; | |
4465 | RULE_COLLECTION_FOR_EACH (rule, &rules) { | |
9ed18e46 BP |
4466 | uint64_t packet_count; |
4467 | uint64_t byte_count; | |
dc437090 | 4468 | long long int used; |
5ecc9d81 | 4469 | |
9ed18e46 | 4470 | ofproto->ofproto_class->rule_get_stats(rule, &packet_count, |
dc437090 | 4471 | &byte_count, &used); |
5ecc9d81 | 4472 | |
5e9d0469 BP |
4473 | if (packet_count == UINT64_MAX) { |
4474 | unknown_packets = true; | |
4475 | } else { | |
4476 | stats.packet_count += packet_count; | |
4477 | } | |
4478 | ||
4479 | if (byte_count == UINT64_MAX) { | |
4480 | unknown_bytes = true; | |
4481 | } else { | |
4482 | stats.byte_count += byte_count; | |
4483 | } | |
4484 | ||
9ed18e46 | 4485 | stats.flow_count++; |
3c4486a5 | 4486 | } |
5e9d0469 BP |
4487 | if (unknown_packets) { |
4488 | stats.packet_count = UINT64_MAX; | |
4489 | } | |
4490 | if (unknown_bytes) { | |
4491 | stats.byte_count = UINT64_MAX; | |
4492 | } | |
27d34fce | 4493 | |
15aaf599 | 4494 | rule_collection_unref(&rules); |
a8e547c1 BP |
4495 | rule_collection_destroy(&rules); |
4496 | ||
982697a4 | 4497 | reply = ofputil_encode_aggregate_stats_reply(&stats, oh); |
76c93b22 | 4498 | ofconn_send_reply(ofconn, reply); |
09246b99 BP |
4499 | |
4500 | return 0; | |
4501 | } | |
4502 | ||
c1c9c9c4 | 4503 | struct queue_stats_cbdata { |
ca0f572c | 4504 | struct ofport *ofport; |
ca6ba700 | 4505 | struct ovs_list replies; |
6dc34a0d | 4506 | long long int now; |
c1c9c9c4 BP |
4507 | }; |
4508 | ||
4509 | static void | |
db9220c3 | 4510 | put_queue_stats(struct queue_stats_cbdata *cbdata, uint32_t queue_id, |
c1c9c9c4 BP |
4511 | const struct netdev_queue_stats *stats) |
4512 | { | |
6dc34a0d | 4513 | struct ofputil_queue_stats oqs; |
c1c9c9c4 | 4514 | |
6dc34a0d BP |
4515 | oqs.port_no = cbdata->ofport->pp.port_no; |
4516 | oqs.queue_id = queue_id; | |
4517 | oqs.tx_bytes = stats->tx_bytes; | |
4518 | oqs.tx_packets = stats->tx_packets; | |
4519 | oqs.tx_errors = stats->tx_errors; | |
4520 | if (stats->created != LLONG_MIN) { | |
4521 | calc_duration(stats->created, cbdata->now, | |
4522 | &oqs.duration_sec, &oqs.duration_nsec); | |
4523 | } else { | |
4524 | oqs.duration_sec = oqs.duration_nsec = UINT32_MAX; | |
4525 | } | |
64626975 | 4526 | ofputil_append_queue_stat(&cbdata->replies, &oqs); |
c1c9c9c4 BP |
4527 | } |
4528 | ||
4529 | static void | |
db9220c3 | 4530 | handle_queue_stats_dump_cb(uint32_t queue_id, |
c1c9c9c4 BP |
4531 | struct netdev_queue_stats *stats, |
4532 | void *cbdata_) | |
4533 | { | |
4534 | struct queue_stats_cbdata *cbdata = cbdata_; | |
4535 | ||
4536 | put_queue_stats(cbdata, queue_id, stats); | |
4537 | } | |
4538 | ||
0414d158 | 4539 | static enum ofperr |
ca0f572c | 4540 | handle_queue_stats_for_port(struct ofport *port, uint32_t queue_id, |
c1c9c9c4 BP |
4541 | struct queue_stats_cbdata *cbdata) |
4542 | { | |
ca0f572c | 4543 | cbdata->ofport = port; |
c1c9c9c4 BP |
4544 | if (queue_id == OFPQ_ALL) { |
4545 | netdev_dump_queue_stats(port->netdev, | |
4546 | handle_queue_stats_dump_cb, cbdata); | |
4547 | } else { | |
4548 | struct netdev_queue_stats stats; | |
4549 | ||
1ac788f6 BP |
4550 | if (!netdev_get_queue_stats(port->netdev, queue_id, &stats)) { |
4551 | put_queue_stats(cbdata, queue_id, &stats); | |
0414d158 BP |
4552 | } else { |
4553 | return OFPERR_OFPQOFC_BAD_QUEUE; | |
1ac788f6 | 4554 | } |
c1c9c9c4 | 4555 | } |
0414d158 | 4556 | return 0; |
c1c9c9c4 BP |
4557 | } |
4558 | ||
90bf1e07 | 4559 | static enum ofperr |
63f2140a | 4560 | handle_queue_stats_request(struct ofconn *ofconn, |
982697a4 | 4561 | const struct ofp_header *rq) |
c1c9c9c4 | 4562 | { |
64ff1d96 | 4563 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
c1c9c9c4 | 4564 | struct queue_stats_cbdata cbdata; |
0414d158 | 4565 | struct ofport *port; |
0414d158 | 4566 | enum ofperr error; |
64626975 | 4567 | struct ofputil_queue_stats_request oqsr; |
c1c9c9c4 | 4568 | |
c1c9c9c4 BP |
4569 | COVERAGE_INC(ofproto_queue_req); |
4570 | ||
982697a4 | 4571 | ofpmp_init(&cbdata.replies, rq); |
6dc34a0d | 4572 | cbdata.now = time_msec(); |
c1c9c9c4 | 4573 | |
64626975 SH |
4574 | error = ofputil_decode_queue_stats_request(rq, &oqsr); |
4575 | if (error) { | |
4576 | return error; | |
4577 | } | |
4578 | ||
7f05e7ab | 4579 | if (oqsr.port_no == OFPP_ANY) { |
0414d158 | 4580 | error = OFPERR_OFPQOFC_BAD_QUEUE; |
4e8e4213 | 4581 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
64626975 | 4582 | if (!handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata)) { |
0414d158 BP |
4583 | error = 0; |
4584 | } | |
c1c9c9c4 | 4585 | } |
0414d158 | 4586 | } else { |
64626975 | 4587 | port = ofproto_get_port(ofproto, oqsr.port_no); |
0414d158 | 4588 | error = (port |
64626975 | 4589 | ? handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata) |
0414d158 BP |
4590 | : OFPERR_OFPQOFC_BAD_PORT); |
4591 | } | |
4592 | if (!error) { | |
4593 | ofconn_send_replies(ofconn, &cbdata.replies); | |
c1c9c9c4 | 4594 | } else { |
63f2140a | 4595 | ofpbuf_list_delete(&cbdata.replies); |
c1c9c9c4 | 4596 | } |
c1c9c9c4 | 4597 | |
0414d158 | 4598 | return error; |
c1c9c9c4 | 4599 | } |
7ee20df1 | 4600 | |
2e31a9b8 | 4601 | static enum ofperr |
6787a49f | 4602 | evict_rules_from_table(struct oftable *table) |
15aaf599 | 4603 | OVS_REQUIRES(ofproto_mutex) |
2e31a9b8 | 4604 | { |
802f84ff JR |
4605 | enum ofperr error = 0; |
4606 | struct rule_collection rules; | |
6787a49f | 4607 | unsigned int count = table->n_flows; |
802f84ff JR |
4608 | unsigned int max_flows = table->max_flows; |
4609 | ||
4610 | rule_collection_init(&rules); | |
4611 | ||
4612 | while (count-- > max_flows) { | |
2e31a9b8 | 4613 | struct rule *rule; |
8037acb4 | 4614 | |
2e31a9b8 | 4615 | if (!choose_rule_to_evict(table, &rule)) { |
802f84ff JR |
4616 | error = OFPERR_OFPFMFC_TABLE_FULL; |
4617 | break; | |
2e31a9b8 | 4618 | } else { |
802f84ff JR |
4619 | eviction_group_remove_rule(rule); |
4620 | rule_collection_add(&rules, rule); | |
2e31a9b8 | 4621 | } |
8037acb4 | 4622 | } |
802f84ff | 4623 | delete_flows__(&rules, OFPRR_EVICTION, NULL); |
2e31a9b8 | 4624 | |
802f84ff | 4625 | return error; |
8037acb4 BP |
4626 | } |
4627 | ||
18080541 BP |
4628 | static void |
4629 | get_conjunctions(const struct ofputil_flow_mod *fm, | |
4630 | struct cls_conjunction **conjsp, size_t *n_conjsp) | |
4631 | OVS_REQUIRES(ofproto_mutex) | |
4632 | { | |
4633 | struct cls_conjunction *conjs = NULL; | |
4634 | int n_conjs = 0; | |
4635 | ||
f08e39dd BP |
4636 | const struct ofpact *ofpact; |
4637 | OFPACT_FOR_EACH (ofpact, fm->ofpacts, fm->ofpacts_len) { | |
4638 | if (ofpact->type == OFPACT_CONJUNCTION) { | |
18080541 | 4639 | n_conjs++; |
f08e39dd BP |
4640 | } else if (ofpact->type != OFPACT_NOTE) { |
4641 | /* "conjunction" may appear with "note" actions but not with any | |
4642 | * other type of actions. */ | |
4643 | ovs_assert(!n_conjs); | |
4644 | break; | |
18080541 | 4645 | } |
f08e39dd BP |
4646 | } |
4647 | if (n_conjs) { | |
4648 | int i = 0; | |
18080541 BP |
4649 | |
4650 | conjs = xzalloc(n_conjs * sizeof *conjs); | |
18080541 | 4651 | OFPACT_FOR_EACH (ofpact, fm->ofpacts, fm->ofpacts_len) { |
f08e39dd BP |
4652 | if (ofpact->type == OFPACT_CONJUNCTION) { |
4653 | struct ofpact_conjunction *oc = ofpact_get_CONJUNCTION(ofpact); | |
4654 | conjs[i].clause = oc->clause; | |
4655 | conjs[i].n_clauses = oc->n_clauses; | |
4656 | conjs[i].id = oc->id; | |
4657 | i++; | |
4658 | } | |
18080541 BP |
4659 | } |
4660 | } | |
4661 | ||
4662 | *conjsp = conjs; | |
4663 | *n_conjsp = n_conjs; | |
4664 | } | |
4665 | ||
1f42be1c JR |
4666 | /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT |
4667 | * in which no matching flow already exists in the flow table. | |
4668 | * | |
4669 | * Adds the flow specified by 'fm', to the ofproto's flow table. Returns 0 on | |
4670 | * success, or an OpenFlow error code on failure. | |
4671 | * | |
4672 | * On successful return the caller must complete the operation either by | |
4673 | * calling add_flow_finish(), or add_flow_revert() if the operation needs to | |
4674 | * be reverted. | |
4675 | * | |
4676 | * The caller retains ownership of 'fm->ofpacts'. */ | |
90bf1e07 | 4677 | static enum ofperr |
8be00367 | 4678 | add_flow_start(struct ofproto *ofproto, struct ofproto_flow_mod *ofm) |
15aaf599 | 4679 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 4680 | { |
8be00367 | 4681 | struct ofputil_flow_mod *fm = &ofm->fm; |
fe59694b JR |
4682 | struct rule **old_rule = rule_collection_stub(&ofm->old_rules); |
4683 | struct rule **new_rule = rule_collection_stub(&ofm->new_rules); | |
d0918789 | 4684 | struct oftable *table; |
8037acb4 | 4685 | struct cls_rule cr; |
064af421 | 4686 | struct rule *rule; |
5a361239 | 4687 | uint8_t table_id; |
39c94593 JR |
4688 | struct cls_conjunction *conjs; |
4689 | size_t n_conjs; | |
4690 | enum ofperr error; | |
064af421 | 4691 | |
554764d1 SH |
4692 | if (!check_table_id(ofproto, fm->table_id)) { |
4693 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
48266274 BP |
4694 | return error; |
4695 | } | |
4696 | ||
7ee20df1 BP |
4697 | /* Pick table. */ |
4698 | if (fm->table_id == 0xff) { | |
13521ff5 | 4699 | if (ofproto->ofproto_class->rule_choose_table) { |
81a76618 BP |
4700 | error = ofproto->ofproto_class->rule_choose_table(ofproto, |
4701 | &fm->match, | |
7ee20df1 BP |
4702 | &table_id); |
4703 | if (error) { | |
4704 | return error; | |
4705 | } | |
cb22974d | 4706 | ovs_assert(table_id < ofproto->n_tables); |
7ee20df1 | 4707 | } else { |
5a361239 | 4708 | table_id = 0; |
7ee20df1 BP |
4709 | } |
4710 | } else if (fm->table_id < ofproto->n_tables) { | |
5a361239 | 4711 | table_id = fm->table_id; |
7ee20df1 | 4712 | } else { |
c22c56bd | 4713 | return OFPERR_OFPBRC_BAD_TABLE_ID; |
064af421 BP |
4714 | } |
4715 | ||
5a361239 | 4716 | table = &ofproto->tables[table_id]; |
834fe5cb BP |
4717 | if (table->flags & OFTABLE_READONLY |
4718 | && !(fm->flags & OFPUTIL_FF_NO_READONLY)) { | |
5c67e4af BP |
4719 | return OFPERR_OFPBRC_EPERM; |
4720 | } | |
4721 | ||
c84d8691 JR |
4722 | if (!(fm->flags & OFPUTIL_FF_HIDDEN_FIELDS) |
4723 | && !match_has_default_hidden_fields(&fm->match)) { | |
4724 | VLOG_WARN_RL(&rl, "%s: (add_flow) only internal flows can set " | |
4725 | "non-default values to hidden fields", ofproto->name); | |
4726 | return OFPERR_OFPBRC_EPERM; | |
adcf00ba AZ |
4727 | } |
4728 | ||
bd53aa17 | 4729 | cls_rule_init(&cr, &fm->match, fm->priority); |
8037acb4 | 4730 | |
1f42be1c | 4731 | /* Check for the existence of an identical rule. |
2b7b1427 | 4732 | * This will not return rules earlier marked for removal. */ |
bd53aa17 JR |
4733 | rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls, &cr, |
4734 | ofm->version)); | |
39c94593 JR |
4735 | *old_rule = rule; |
4736 | if (!rule) { | |
c84d8691 JR |
4737 | /* Check for overlap, if requested. */ |
4738 | if (fm->flags & OFPUTIL_FF_CHECK_OVERLAP | |
bd53aa17 | 4739 | && classifier_rule_overlaps(&table->cls, &cr, ofm->version)) { |
c84d8691 JR |
4740 | cls_rule_destroy(&cr); |
4741 | return OFPERR_OFPFMFC_OVERLAP; | |
dd27be82 | 4742 | } |
b277c7cc | 4743 | |
c84d8691 | 4744 | /* If necessary, evict an existing rule to clear out space. */ |
6787a49f JR |
4745 | if (table->n_flows >= table->max_flows) { |
4746 | if (!choose_rule_to_evict(table, &rule)) { | |
4747 | error = OFPERR_OFPFMFC_TABLE_FULL; | |
4748 | cls_rule_destroy(&cr); | |
4749 | return error; | |
4750 | } | |
4751 | eviction_group_remove_rule(rule); | |
4752 | /* Marks '*old_rule' as an evicted rule rather than replaced rule. | |
4753 | */ | |
5aacc3e2 | 4754 | rule->removed_reason = OFPRR_EVICTION; |
6787a49f | 4755 | *old_rule = rule; |
c09f755d | 4756 | } |
39c94593 JR |
4757 | } else { |
4758 | fm->modify_cookie = true; | |
4759 | } | |
81a76618 | 4760 | |
39c94593 JR |
4761 | /* Allocate new rule. */ |
4762 | error = replace_rule_create(ofproto, fm, &cr, table - ofproto->tables, | |
4763 | rule, new_rule); | |
4764 | if (error) { | |
4765 | return error; | |
064af421 | 4766 | } |
8037acb4 | 4767 | |
39c94593 | 4768 | get_conjunctions(fm, &conjs, &n_conjs); |
8be00367 | 4769 | replace_rule_start(ofproto, ofm->version, rule, *new_rule, conjs, n_conjs); |
39c94593 JR |
4770 | free(conjs); |
4771 | ||
c84d8691 JR |
4772 | return 0; |
4773 | } | |
1ebeaaa7 | 4774 | |
6787a49f | 4775 | /* Revert the effects of add_flow_start(). */ |
1f42be1c | 4776 | static void |
8be00367 | 4777 | add_flow_revert(struct ofproto *ofproto, struct ofproto_flow_mod *ofm) |
1f42be1c JR |
4778 | OVS_REQUIRES(ofproto_mutex) |
4779 | { | |
fe59694b JR |
4780 | struct rule *old_rule = rule_collection_stub(&ofm->old_rules)[0]; |
4781 | struct rule *new_rule = rule_collection_stub(&ofm->new_rules)[0]; | |
8be00367 | 4782 | |
5aacc3e2 | 4783 | if (old_rule && old_rule->removed_reason == OFPRR_EVICTION) { |
6787a49f JR |
4784 | /* Revert the eviction. */ |
4785 | eviction_group_add_rule(old_rule); | |
4786 | } | |
4787 | ||
39c94593 | 4788 | replace_rule_revert(ofproto, old_rule, new_rule); |
1f42be1c JR |
4789 | } |
4790 | ||
39c94593 | 4791 | /* To be called after version bump. */ |
c84d8691 | 4792 | static void |
8be00367 | 4793 | add_flow_finish(struct ofproto *ofproto, struct ofproto_flow_mod *ofm, |
0a0d9385 | 4794 | const struct openflow_mod_requester *req) |
c84d8691 JR |
4795 | OVS_REQUIRES(ofproto_mutex) |
4796 | { | |
8be00367 | 4797 | struct ofputil_flow_mod *fm = &ofm->fm; |
fe59694b JR |
4798 | struct rule *old_rule = rule_collection_stub(&ofm->old_rules)[0]; |
4799 | struct rule *new_rule = rule_collection_stub(&ofm->new_rules)[0]; | |
39c94593 | 4800 | struct ovs_list dead_cookies = OVS_LIST_INITIALIZER(&dead_cookies); |
8037acb4 | 4801 | |
39c94593 JR |
4802 | replace_rule_finish(ofproto, fm, req, old_rule, new_rule, &dead_cookies); |
4803 | learned_cookies_flush(ofproto, &dead_cookies); | |
802f84ff | 4804 | |
39c94593 JR |
4805 | if (old_rule) { |
4806 | ovsrcu_postpone(remove_rule_rcu, old_rule); | |
4807 | } else { | |
39c94593 | 4808 | ofmonitor_report(ofproto->connmgr, new_rule, NXFME_ADDED, 0, |
c84d8691 JR |
4809 | req ? req->ofconn : NULL, |
4810 | req ? req->request->xid : 0, NULL); | |
6c6eedc5 SJ |
4811 | |
4812 | /* Send Vacancy Events for OF1.4+. */ | |
4813 | send_table_status(ofproto, new_rule->table_id); | |
c84d8691 JR |
4814 | } |
4815 | ||
39c94593 | 4816 | send_buffered_packet(req, fm->buffer_id, new_rule); |
c84d8691 | 4817 | } |
79eee1eb BP |
4818 | \f |
4819 | /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */ | |
064af421 | 4820 | |
39c94593 JR |
4821 | /* Create a new rule based on attributes in 'fm', match in 'cr', 'table_id', |
4822 | * and 'old_rule'. Note that the rule is NOT inserted into a any data | |
4823 | * structures yet. Takes ownership of 'cr'. */ | |
90bf1e07 | 4824 | static enum ofperr |
39c94593 JR |
4825 | replace_rule_create(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4826 | struct cls_rule *cr, uint8_t table_id, | |
4827 | struct rule *old_rule, struct rule **new_rule) | |
79eee1eb | 4828 | { |
39c94593 | 4829 | struct rule *rule; |
dd27be82 | 4830 | enum ofperr error; |
79eee1eb | 4831 | |
39c94593 JR |
4832 | /* Allocate new rule. */ |
4833 | rule = ofproto->ofproto_class->rule_alloc(); | |
4834 | if (!rule) { | |
4835 | cls_rule_destroy(cr); | |
4836 | VLOG_WARN_RL(&rl, "%s: failed to allocate a rule.", ofproto->name); | |
4837 | return OFPERR_OFPFMFC_UNKNOWN; | |
af822017 BP |
4838 | } |
4839 | ||
39c94593 JR |
4840 | /* Initialize base state. */ |
4841 | *CONST_CAST(struct ofproto **, &rule->ofproto) = ofproto; | |
4842 | cls_rule_move(CONST_CAST(struct cls_rule *, &rule->cr), cr); | |
4843 | ovs_refcount_init(&rule->ref_count); | |
4844 | rule->flow_cookie = fm->new_cookie; | |
4845 | rule->created = rule->modified = time_msec(); | |
834fe5cb | 4846 | |
39c94593 JR |
4847 | ovs_mutex_init(&rule->mutex); |
4848 | ovs_mutex_lock(&rule->mutex); | |
4849 | rule->idle_timeout = fm->idle_timeout; | |
4850 | rule->hard_timeout = fm->hard_timeout; | |
cf119e09 | 4851 | *CONST_CAST(uint16_t *, &rule->importance) = fm->importance; |
f695ebfa | 4852 | rule->removed_reason = OVS_OFPRR_NONE; |
834fe5cb | 4853 | |
39c94593 JR |
4854 | *CONST_CAST(uint8_t *, &rule->table_id) = table_id; |
4855 | rule->flags = fm->flags & OFPUTIL_FF_STATE; | |
4856 | *CONST_CAST(const struct rule_actions **, &rule->actions) | |
4857 | = rule_actions_create(fm->ofpacts, fm->ofpacts_len); | |
417e7e66 | 4858 | ovs_list_init(&rule->meter_list_node); |
39c94593 | 4859 | rule->eviction_group = NULL; |
417e7e66 | 4860 | ovs_list_init(&rule->expirable); |
39c94593 JR |
4861 | rule->monitor_flags = 0; |
4862 | rule->add_seqno = 0; | |
4863 | rule->modify_seqno = 0; | |
834fe5cb | 4864 | |
39c94593 | 4865 | /* Copy values from old rule for modify semantics. */ |
5aacc3e2 | 4866 | if (old_rule && old_rule->removed_reason != OFPRR_EVICTION) { |
39c94593 JR |
4867 | bool change_cookie = (fm->modify_cookie |
4868 | && fm->new_cookie != OVS_BE64_MAX | |
4869 | && fm->new_cookie != old_rule->flow_cookie); | |
4870 | ||
4871 | ovs_mutex_lock(&old_rule->mutex); | |
4872 | if (fm->command != OFPFC_ADD) { | |
4873 | rule->idle_timeout = old_rule->idle_timeout; | |
4874 | rule->hard_timeout = old_rule->hard_timeout; | |
cf119e09 | 4875 | *CONST_CAST(uint16_t *, &rule->importance) = old_rule->importance; |
39c94593 JR |
4876 | rule->flags = old_rule->flags; |
4877 | rule->created = old_rule->created; | |
4878 | } | |
4879 | if (!change_cookie) { | |
4880 | rule->flow_cookie = old_rule->flow_cookie; | |
4881 | } | |
4882 | ovs_mutex_unlock(&old_rule->mutex); | |
dd27be82 | 4883 | } |
dd27be82 JR |
4884 | ovs_mutex_unlock(&rule->mutex); |
4885 | ||
39c94593 JR |
4886 | /* Construct rule, initializing derived state. */ |
4887 | error = ofproto->ofproto_class->rule_construct(rule); | |
4888 | if (error) { | |
4889 | ofproto_rule_destroy__(rule); | |
4890 | return error; | |
dd27be82 | 4891 | } |
b277c7cc | 4892 | |
39c94593 | 4893 | rule->removed = true; /* Not yet in ofproto data structures. */ |
dd27be82 | 4894 | |
39c94593 JR |
4895 | *new_rule = rule; |
4896 | return 0; | |
4897 | } | |
884e1dc4 | 4898 | |
39c94593 | 4899 | static void |
44e0c35d | 4900 | replace_rule_start(struct ofproto *ofproto, ovs_version_t version, |
39c94593 JR |
4901 | struct rule *old_rule, struct rule *new_rule, |
4902 | struct cls_conjunction *conjs, size_t n_conjs) | |
4903 | { | |
4904 | struct oftable *table = &ofproto->tables[new_rule->table_id]; | |
834fe5cb | 4905 | |
6787a49f | 4906 | /* 'old_rule' may be either an evicted rule or replaced rule. */ |
39c94593 JR |
4907 | if (old_rule) { |
4908 | /* Mark the old rule for removal in the next version. */ | |
8be00367 | 4909 | cls_rule_make_invisible_in_version(&old_rule->cr, version); |
9bab38ff JR |
4910 | |
4911 | /* Remove the old rule from data structures. */ | |
4912 | ofproto_rule_remove__(ofproto, old_rule); | |
d79e3d70 JR |
4913 | } else { |
4914 | table->n_flows++; | |
dd27be82 | 4915 | } |
cc099268 JR |
4916 | /* Insert flow to ofproto data structures, so that later flow_mods may |
4917 | * relate to it. This is reversible, in case later errors require this to | |
39c94593 JR |
4918 | * be reverted. */ |
4919 | ofproto_rule_insert__(ofproto, new_rule); | |
4920 | /* Make the new rule visible for classifier lookups only from the next | |
4921 | * version. */ | |
bd53aa17 | 4922 | classifier_insert(&table->cls, &new_rule->cr, version, conjs, n_conjs); |
39c94593 JR |
4923 | } |
4924 | ||
cc099268 JR |
4925 | static void |
4926 | replace_rule_revert(struct ofproto *ofproto, | |
4927 | struct rule *old_rule, struct rule *new_rule) | |
39c94593 JR |
4928 | { |
4929 | struct oftable *table = &ofproto->tables[new_rule->table_id]; | |
35f48b8b | 4930 | |
39c94593 | 4931 | if (old_rule) { |
9bab38ff JR |
4932 | /* Restore the old rule to data structures. */ |
4933 | ofproto_rule_insert__(ofproto, old_rule); | |
4934 | ||
d79e3d70 | 4935 | /* Restore the original visibility of the old rule. */ |
39c94593 | 4936 | cls_rule_restore_visibility(&old_rule->cr); |
d79e3d70 JR |
4937 | } else { |
4938 | /* Restore table's rule count. */ | |
4939 | table->n_flows--; | |
834fe5cb BP |
4940 | } |
4941 | ||
39c94593 JR |
4942 | /* Remove the new rule immediately. It was never visible to lookups. */ |
4943 | if (!classifier_remove(&table->cls, &new_rule->cr)) { | |
4944 | OVS_NOT_REACHED(); | |
5ecc9d81 | 4945 | } |
39c94593 JR |
4946 | ofproto_rule_remove__(ofproto, new_rule); |
4947 | /* The rule was not inserted to the ofproto provider, so we can | |
4948 | * release it without deleting it from the ofproto provider. */ | |
4949 | ofproto_rule_unref(new_rule); | |
dd27be82 | 4950 | } |
79eee1eb | 4951 | |
39c94593 | 4952 | /* Adds the 'new_rule', replacing the 'old_rule'. */ |
dd27be82 | 4953 | static void |
39c94593 | 4954 | replace_rule_finish(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
0a0d9385 | 4955 | const struct openflow_mod_requester *req, |
39c94593 JR |
4956 | struct rule *old_rule, struct rule *new_rule, |
4957 | struct ovs_list *dead_cookies) | |
dd27be82 JR |
4958 | OVS_REQUIRES(ofproto_mutex) |
4959 | { | |
748eb2f5 | 4960 | bool forward_counts = !(new_rule->flags & OFPUTIL_FF_RESET_COUNTS); |
6787a49f JR |
4961 | struct rule *replaced_rule; |
4962 | ||
5aacc3e2 JR |
4963 | replaced_rule = (old_rule && old_rule->removed_reason != OFPRR_EVICTION) |
4964 | ? old_rule : NULL; | |
dd27be82 | 4965 | |
6787a49f JR |
4966 | /* Insert the new flow to the ofproto provider. A non-NULL 'replaced_rule' |
4967 | * is a duplicate rule the 'new_rule' is replacing. The provider should | |
748eb2f5 JR |
4968 | * link the packet and byte counts from the old rule to the new one if |
4969 | * 'forward_counts' is 'true'. The 'replaced_rule' will be deleted right | |
4970 | * after this call. */ | |
6787a49f | 4971 | ofproto->ofproto_class->rule_insert(new_rule, replaced_rule, |
748eb2f5 | 4972 | forward_counts); |
39c94593 JR |
4973 | learned_cookies_inc(ofproto, rule_get_actions(new_rule)); |
4974 | ||
4975 | if (old_rule) { | |
4976 | const struct rule_actions *old_actions = rule_get_actions(old_rule); | |
4977 | ||
39c94593 JR |
4978 | learned_cookies_dec(ofproto, old_actions, dead_cookies); |
4979 | ||
6787a49f JR |
4980 | if (replaced_rule) { |
4981 | enum nx_flow_update_event event = fm->command == OFPFC_ADD | |
4982 | ? NXFME_ADDED : NXFME_MODIFIED; | |
4983 | ||
4984 | bool change_cookie = (fm->modify_cookie | |
4985 | && fm->new_cookie != OVS_BE64_MAX | |
4986 | && fm->new_cookie != old_rule->flow_cookie); | |
4987 | ||
4988 | bool change_actions = !ofpacts_equal(fm->ofpacts, | |
4989 | fm->ofpacts_len, | |
4990 | old_actions->ofpacts, | |
4991 | old_actions->ofpacts_len); | |
4992 | ||
4993 | if (event != NXFME_MODIFIED || change_actions || change_cookie) { | |
4994 | ofmonitor_report(ofproto->connmgr, new_rule, event, 0, | |
4995 | req ? req->ofconn : NULL, | |
4996 | req ? req->request->xid : 0, | |
4997 | change_actions ? old_actions : NULL); | |
4998 | } | |
4999 | } else { | |
5000 | /* XXX: This is slight duplication with delete_flows_finish__() */ | |
6787a49f JR |
5001 | ofmonitor_report(ofproto->connmgr, old_rule, NXFME_DELETED, |
5002 | OFPRR_EVICTION, | |
39c94593 | 5003 | req ? req->ofconn : NULL, |
6787a49f | 5004 | req ? req->request->xid : 0, NULL); |
39c94593 | 5005 | } |
dd27be82 | 5006 | } |
9ed18e46 BP |
5007 | } |
5008 | ||
9387b970 | 5009 | static enum ofperr |
8be00367 | 5010 | modify_flows_start__(struct ofproto *ofproto, struct ofproto_flow_mod *ofm) |
dd27be82 JR |
5011 | OVS_REQUIRES(ofproto_mutex) |
5012 | { | |
8be00367 JR |
5013 | struct ofputil_flow_mod *fm = &ofm->fm; |
5014 | struct rule_collection *old_rules = &ofm->old_rules; | |
5015 | struct rule_collection *new_rules = &ofm->new_rules; | |
dd27be82 JR |
5016 | enum ofperr error; |
5017 | ||
39c94593 JR |
5018 | rule_collection_init(new_rules); |
5019 | ||
fe59694b | 5020 | if (rule_collection_n(old_rules) > 0) { |
39c94593 JR |
5021 | struct cls_conjunction *conjs; |
5022 | size_t n_conjs; | |
39c94593 JR |
5023 | |
5024 | /* Create a new 'modified' rule for each old rule. */ | |
fe59694b JR |
5025 | struct rule *old_rule; |
5026 | RULE_COLLECTION_FOR_EACH (old_rule, old_rules) { | |
39c94593 JR |
5027 | struct rule *new_rule; |
5028 | struct cls_rule cr; | |
5029 | ||
bd53aa17 | 5030 | cls_rule_clone(&cr, &old_rule->cr); |
39c94593 JR |
5031 | error = replace_rule_create(ofproto, fm, &cr, old_rule->table_id, |
5032 | old_rule, &new_rule); | |
5033 | if (!error) { | |
5034 | rule_collection_add(new_rules, new_rule); | |
5035 | } else { | |
5036 | rule_collection_unref(new_rules); | |
5037 | rule_collection_destroy(new_rules); | |
5038 | return error; | |
5039 | } | |
5040 | } | |
fe59694b JR |
5041 | ovs_assert(rule_collection_n(new_rules) |
5042 | == rule_collection_n(old_rules)); | |
39c94593 JR |
5043 | |
5044 | get_conjunctions(fm, &conjs, &n_conjs); | |
fe59694b JR |
5045 | struct rule *new_rule; |
5046 | RULE_COLLECTIONS_FOR_EACH (old_rule, new_rule, old_rules, new_rules) { | |
5047 | replace_rule_start(ofproto, ofm->version, old_rule, new_rule, | |
5048 | conjs, n_conjs); | |
39c94593 JR |
5049 | } |
5050 | free(conjs); | |
d99f64d7 JR |
5051 | } else if (!(fm->cookie_mask != htonll(0) |
5052 | || fm->new_cookie == OVS_BE64_MAX)) { | |
39c94593 | 5053 | /* No match, add a new flow. */ |
8be00367 | 5054 | error = add_flow_start(ofproto, ofm); |
fe59694b | 5055 | new_rules->collection.n = 1; |
dd27be82 | 5056 | } else { |
d99f64d7 | 5057 | error = 0; |
dd27be82 | 5058 | } |
39c94593 | 5059 | |
dd27be82 JR |
5060 | return error; |
5061 | } | |
5062 | ||
90bf1e07 BP |
5063 | /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on |
5064 | * failure. | |
9ed18e46 BP |
5065 | * |
5066 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, | |
5067 | * if any. */ | |
90bf1e07 | 5068 | static enum ofperr |
8be00367 | 5069 | modify_flows_start_loose(struct ofproto *ofproto, struct ofproto_flow_mod *ofm) |
15aaf599 | 5070 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 5071 | { |
8be00367 JR |
5072 | struct ofputil_flow_mod *fm = &ofm->fm; |
5073 | struct rule_collection *old_rules = &ofm->old_rules; | |
a9b22b7f | 5074 | struct rule_criteria criteria; |
d51c8b71 | 5075 | enum ofperr error; |
9ed18e46 | 5076 | |
44e0c35d | 5077 | rule_criteria_init(&criteria, fm->table_id, &fm->match, 0, OVS_VERSION_MAX, |
30ef36c6 | 5078 | fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG_ANY); |
dd51dae2 BP |
5079 | rule_criteria_require_rw(&criteria, |
5080 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
39c94593 | 5081 | error = collect_rules_loose(ofproto, &criteria, old_rules); |
a9b22b7f BP |
5082 | rule_criteria_destroy(&criteria); |
5083 | ||
a8e547c1 | 5084 | if (!error) { |
8be00367 | 5085 | error = modify_flows_start__(ofproto, ofm); |
d99f64d7 JR |
5086 | } |
5087 | ||
5088 | if (error) { | |
39c94593 | 5089 | rule_collection_destroy(old_rules); |
d99f64d7 JR |
5090 | } |
5091 | return error; | |
5092 | } | |
5093 | ||
1f42be1c | 5094 | static void |
8be00367 | 5095 | modify_flows_revert(struct ofproto *ofproto, struct ofproto_flow_mod *ofm) |
1f42be1c JR |
5096 | OVS_REQUIRES(ofproto_mutex) |
5097 | { | |
8be00367 JR |
5098 | struct rule_collection *old_rules = &ofm->old_rules; |
5099 | struct rule_collection *new_rules = &ofm->new_rules; | |
5100 | ||
39c94593 | 5101 | /* Old rules were not changed yet, only need to revert new rules. */ |
fe59694b JR |
5102 | if (rule_collection_n(old_rules) == 0 |
5103 | && rule_collection_n(new_rules) == 1) { | |
8be00367 | 5104 | add_flow_revert(ofproto, ofm); |
fe59694b JR |
5105 | } else if (rule_collection_n(old_rules) > 0) { |
5106 | struct rule *old_rule, *new_rule; | |
5107 | RULE_COLLECTIONS_FOR_EACH (old_rule, new_rule, old_rules, new_rules) { | |
5108 | replace_rule_revert(ofproto, old_rule, new_rule); | |
39c94593 JR |
5109 | } |
5110 | rule_collection_destroy(new_rules); | |
5111 | rule_collection_destroy(old_rules); | |
1f42be1c | 5112 | } |
1f42be1c JR |
5113 | } |
5114 | ||
d99f64d7 | 5115 | static void |
8be00367 | 5116 | modify_flows_finish(struct ofproto *ofproto, struct ofproto_flow_mod *ofm, |
0a0d9385 | 5117 | const struct openflow_mod_requester *req) |
d99f64d7 JR |
5118 | OVS_REQUIRES(ofproto_mutex) |
5119 | { | |
8be00367 JR |
5120 | struct ofputil_flow_mod *fm = &ofm->fm; |
5121 | struct rule_collection *old_rules = &ofm->old_rules; | |
5122 | struct rule_collection *new_rules = &ofm->new_rules; | |
5123 | ||
fe59694b JR |
5124 | if (rule_collection_n(old_rules) == 0 |
5125 | && rule_collection_n(new_rules) == 1) { | |
8be00367 | 5126 | add_flow_finish(ofproto, ofm, req); |
fe59694b | 5127 | } else if (rule_collection_n(old_rules) > 0) { |
39c94593 JR |
5128 | struct ovs_list dead_cookies = OVS_LIST_INITIALIZER(&dead_cookies); |
5129 | ||
fe59694b JR |
5130 | ovs_assert(rule_collection_n(new_rules) |
5131 | == rule_collection_n(old_rules)); | |
39c94593 | 5132 | |
fe59694b JR |
5133 | struct rule *old_rule, *new_rule; |
5134 | RULE_COLLECTIONS_FOR_EACH (old_rule, new_rule, old_rules, new_rules) { | |
5135 | replace_rule_finish(ofproto, fm, req, old_rule, new_rule, | |
5136 | &dead_cookies); | |
39c94593 JR |
5137 | } |
5138 | learned_cookies_flush(ofproto, &dead_cookies); | |
cc099268 | 5139 | remove_rules_postponed(old_rules); |
39c94593 | 5140 | |
fe59694b JR |
5141 | send_buffered_packet(req, fm->buffer_id, |
5142 | rule_collection_rules(new_rules)[0]); | |
39c94593 | 5143 | rule_collection_destroy(new_rules); |
d99f64d7 | 5144 | } |
d99f64d7 JR |
5145 | } |
5146 | ||
79eee1eb | 5147 | /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error |
baae3d02 | 5148 | * code on failure. */ |
90bf1e07 | 5149 | static enum ofperr |
8be00367 | 5150 | modify_flow_start_strict(struct ofproto *ofproto, struct ofproto_flow_mod *ofm) |
15aaf599 | 5151 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 5152 | { |
8be00367 JR |
5153 | struct ofputil_flow_mod *fm = &ofm->fm; |
5154 | struct rule_collection *old_rules = &ofm->old_rules; | |
a9b22b7f | 5155 | struct rule_criteria criteria; |
d51c8b71 | 5156 | enum ofperr error; |
6c1491fb | 5157 | |
a9b22b7f | 5158 | rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority, |
44e0c35d | 5159 | OVS_VERSION_MAX, fm->cookie, fm->cookie_mask, OFPP_ANY, |
30ef36c6 | 5160 | OFPG_ANY); |
dd51dae2 BP |
5161 | rule_criteria_require_rw(&criteria, |
5162 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
39c94593 | 5163 | error = collect_rules_strict(ofproto, &criteria, old_rules); |
a9b22b7f BP |
5164 | rule_criteria_destroy(&criteria); |
5165 | ||
a8e547c1 | 5166 | if (!error) { |
dd27be82 | 5167 | /* collect_rules_strict() can return max 1 rule. */ |
8be00367 | 5168 | error = modify_flows_start__(ofproto, ofm); |
d99f64d7 JR |
5169 | } |
5170 | ||
5171 | if (error) { | |
39c94593 | 5172 | rule_collection_destroy(old_rules); |
d99f64d7 JR |
5173 | } |
5174 | return error; | |
5175 | } | |
9ed18e46 BP |
5176 | \f |
5177 | /* OFPFC_DELETE implementation. */ | |
79eee1eb | 5178 | |
254750ce | 5179 | static void |
44e0c35d | 5180 | delete_flows_start__(struct ofproto *ofproto, ovs_version_t version, |
39c94593 JR |
5181 | const struct rule_collection *rules) |
5182 | OVS_REQUIRES(ofproto_mutex) | |
5183 | { | |
fe59694b JR |
5184 | struct rule *rule; |
5185 | ||
5186 | RULE_COLLECTION_FOR_EACH (rule, rules) { | |
d79e3d70 JR |
5187 | struct oftable *table = &ofproto->tables[rule->table_id]; |
5188 | ||
5189 | table->n_flows--; | |
8be00367 | 5190 | cls_rule_make_invisible_in_version(&rule->cr, version); |
9bab38ff JR |
5191 | |
5192 | /* Remove rule from ofproto data structures. */ | |
5193 | ofproto_rule_remove__(ofproto, rule); | |
39c94593 JR |
5194 | } |
5195 | } | |
5196 | ||
25070e04 JR |
5197 | static void |
5198 | delete_flows_revert__(struct ofproto *ofproto, | |
5199 | const struct rule_collection *rules) | |
5200 | OVS_REQUIRES(ofproto_mutex) | |
5201 | { | |
5202 | struct rule *rule; | |
5203 | ||
5204 | RULE_COLLECTION_FOR_EACH (rule, rules) { | |
5205 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
5206 | ||
5207 | /* Add rule back to ofproto data structures. */ | |
5208 | ofproto_rule_insert__(ofproto, rule); | |
5209 | ||
5210 | /* Restore table's rule count. */ | |
5211 | table->n_flows++; | |
5212 | ||
5213 | /* Restore the original visibility of the rule. */ | |
5214 | cls_rule_restore_visibility(&rule->cr); | |
5215 | } | |
5216 | } | |
5217 | ||
39c94593 JR |
5218 | static void |
5219 | delete_flows_finish__(struct ofproto *ofproto, | |
5220 | struct rule_collection *rules, | |
5221 | enum ofp_flow_removed_reason reason, | |
0a0d9385 | 5222 | const struct openflow_mod_requester *req) |
15aaf599 | 5223 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 5224 | { |
fe59694b | 5225 | if (rule_collection_n(rules)) { |
55951e15 | 5226 | struct ovs_list dead_cookies = OVS_LIST_INITIALIZER(&dead_cookies); |
fe59694b | 5227 | struct rule *rule; |
79eee1eb | 5228 | |
fe59694b | 5229 | RULE_COLLECTION_FOR_EACH (rule, rules) { |
f695ebfa JR |
5230 | /* This value will be used to send the flow removed message right |
5231 | * before the rule is actually destroyed. */ | |
5232 | rule->removed_reason = reason; | |
5233 | ||
9ca4a86f | 5234 | ofmonitor_report(ofproto->connmgr, rule, NXFME_DELETED, reason, |
c84d8691 JR |
5235 | req ? req->ofconn : NULL, |
5236 | req ? req->request->xid : 0, NULL); | |
6c6eedc5 SJ |
5237 | |
5238 | /* Send Vacancy Event for OF1.4+. */ | |
5239 | send_table_status(ofproto, rule->table_id); | |
5240 | ||
802f84ff JR |
5241 | learned_cookies_dec(ofproto, rule_get_actions(rule), |
5242 | &dead_cookies); | |
9ca4a86f | 5243 | } |
cc099268 | 5244 | remove_rules_postponed(rules); |
39c94593 | 5245 | |
35f48b8b | 5246 | learned_cookies_flush(ofproto, &dead_cookies); |
39c94593 JR |
5247 | } |
5248 | } | |
5249 | ||
5250 | /* Deletes the rules listed in 'rules'. | |
5251 | * The deleted rules will become invisible to the lookups in the next version. | |
5252 | * Destroys 'rules'. */ | |
5253 | static void | |
5254 | delete_flows__(struct rule_collection *rules, | |
5255 | enum ofp_flow_removed_reason reason, | |
0a0d9385 | 5256 | const struct openflow_mod_requester *req) |
39c94593 JR |
5257 | OVS_REQUIRES(ofproto_mutex) |
5258 | { | |
fe59694b JR |
5259 | if (rule_collection_n(rules)) { |
5260 | struct ofproto *ofproto = rule_collection_rules(rules)[0]->ofproto; | |
39c94593 | 5261 | |
8be00367 | 5262 | delete_flows_start__(ofproto, ofproto->tables_version + 1, rules); |
39c94593 JR |
5263 | ofproto_bump_tables_version(ofproto); |
5264 | delete_flows_finish__(ofproto, rules, reason, req); | |
9ca4a86f BP |
5265 | ofmonitor_flush(ofproto->connmgr); |
5266 | } | |
79eee1eb | 5267 | } |
79eee1eb BP |
5268 | |
5269 | /* Implements OFPFC_DELETE. */ | |
90bf1e07 | 5270 | static enum ofperr |
8be00367 | 5271 | delete_flows_start_loose(struct ofproto *ofproto, struct ofproto_flow_mod *ofm) |
15aaf599 | 5272 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 5273 | { |
8be00367 JR |
5274 | const struct ofputil_flow_mod *fm = &ofm->fm; |
5275 | struct rule_collection *rules = &ofm->old_rules; | |
a9b22b7f | 5276 | struct rule_criteria criteria; |
90bf1e07 | 5277 | enum ofperr error; |
064af421 | 5278 | |
44e0c35d | 5279 | rule_criteria_init(&criteria, fm->table_id, &fm->match, 0, OVS_VERSION_MAX, |
39c94593 JR |
5280 | fm->cookie, fm->cookie_mask, fm->out_port, |
5281 | fm->out_group); | |
dd51dae2 BP |
5282 | rule_criteria_require_rw(&criteria, |
5283 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
ce59413f | 5284 | error = collect_rules_loose(ofproto, &criteria, rules); |
a9b22b7f BP |
5285 | rule_criteria_destroy(&criteria); |
5286 | ||
802f84ff | 5287 | if (!error) { |
8be00367 | 5288 | delete_flows_start__(ofproto, ofm->version, rules); |
a8e547c1 | 5289 | } |
a8e547c1 BP |
5290 | |
5291 | return error; | |
064af421 BP |
5292 | } |
5293 | ||
ce59413f | 5294 | static void |
8be00367 | 5295 | delete_flows_revert(struct ofproto *ofproto, struct ofproto_flow_mod *ofm) |
ce59413f JR |
5296 | OVS_REQUIRES(ofproto_mutex) |
5297 | { | |
25070e04 JR |
5298 | delete_flows_revert__(ofproto, &ofm->old_rules); |
5299 | rule_collection_destroy(&ofm->old_rules); | |
ce59413f JR |
5300 | } |
5301 | ||
1f42be1c | 5302 | static void |
39c94593 | 5303 | delete_flows_finish(struct ofproto *ofproto, |
8be00367 | 5304 | struct ofproto_flow_mod *ofm, |
0a0d9385 | 5305 | const struct openflow_mod_requester *req) |
15aaf599 | 5306 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 5307 | { |
5aacc3e2 | 5308 | delete_flows_finish__(ofproto, &ofm->old_rules, OFPRR_DELETE, req); |
ce59413f JR |
5309 | } |
5310 | ||
5311 | /* Implements OFPFC_DELETE_STRICT. */ | |
5312 | static enum ofperr | |
4fcb2083 | 5313 | delete_flow_start_strict(struct ofproto *ofproto, |
8be00367 | 5314 | struct ofproto_flow_mod *ofm) |
ce59413f JR |
5315 | OVS_REQUIRES(ofproto_mutex) |
5316 | { | |
8be00367 JR |
5317 | const struct ofputil_flow_mod *fm = &ofm->fm; |
5318 | struct rule_collection *rules = &ofm->old_rules; | |
ce59413f JR |
5319 | struct rule_criteria criteria; |
5320 | enum ofperr error; | |
5321 | ||
a9b22b7f | 5322 | rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority, |
44e0c35d | 5323 | OVS_VERSION_MAX, fm->cookie, fm->cookie_mask, |
a9b22b7f | 5324 | fm->out_port, fm->out_group); |
dd51dae2 BP |
5325 | rule_criteria_require_rw(&criteria, |
5326 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
ce59413f | 5327 | error = collect_rules_strict(ofproto, &criteria, rules); |
a9b22b7f BP |
5328 | rule_criteria_destroy(&criteria); |
5329 | ||
802f84ff | 5330 | if (!error) { |
8be00367 | 5331 | delete_flows_start__(ofproto, ofm->version, rules); |
ce59413f JR |
5332 | } |
5333 | ||
5334 | return error; | |
5335 | } | |
5336 | ||
f695ebfa | 5337 | /* This may only be called by rule_destroy_cb()! */ |
abe529af | 5338 | static void |
f695ebfa JR |
5339 | ofproto_rule_send_removed(struct rule *rule) |
5340 | OVS_EXCLUDED(ofproto_mutex) | |
abe529af BP |
5341 | { |
5342 | struct ofputil_flow_removed fr; | |
dc437090 | 5343 | long long int used; |
abe529af | 5344 | |
5cb7a798 | 5345 | minimatch_expand(&rule->cr.match, &fr.match); |
81a76618 | 5346 | fr.priority = rule->cr.priority; |
f695ebfa JR |
5347 | |
5348 | ovs_mutex_lock(&ofproto_mutex); | |
abe529af | 5349 | fr.cookie = rule->flow_cookie; |
f695ebfa | 5350 | fr.reason = rule->removed_reason; |
95216219 | 5351 | fr.table_id = rule->table_id; |
65e0be10 BP |
5352 | calc_duration(rule->created, time_msec(), |
5353 | &fr.duration_sec, &fr.duration_nsec); | |
d10976b7 | 5354 | ovs_mutex_lock(&rule->mutex); |
abe529af | 5355 | fr.idle_timeout = rule->idle_timeout; |
fa2bad0f | 5356 | fr.hard_timeout = rule->hard_timeout; |
d10976b7 | 5357 | ovs_mutex_unlock(&rule->mutex); |
abe529af | 5358 | rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count, |
dc437090 | 5359 | &fr.byte_count, &used); |
abe529af | 5360 | connmgr_send_flow_removed(rule->ofproto->connmgr, &fr); |
f695ebfa | 5361 | ovs_mutex_unlock(&ofproto_mutex); |
abe529af BP |
5362 | } |
5363 | ||
5364 | /* Sends an OpenFlow "flow removed" message with the given 'reason' (either | |
5365 | * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its | |
5366 | * ofproto. | |
5367 | * | |
5368 | * ofproto implementation ->run() functions should use this function to expire | |
5369 | * OpenFlow flows. */ | |
5370 | void | |
5371 | ofproto_rule_expire(struct rule *rule, uint8_t reason) | |
15aaf599 | 5372 | OVS_REQUIRES(ofproto_mutex) |
abe529af | 5373 | { |
802f84ff JR |
5374 | struct rule_collection rules; |
5375 | ||
fe59694b JR |
5376 | rule_collection_init(&rules); |
5377 | rule_collection_add(&rules, rule); | |
802f84ff | 5378 | delete_flows__(&rules, reason, NULL); |
79eee1eb | 5379 | } |
994c9973 BP |
5380 | |
5381 | /* Reduces '*timeout' to no more than 'max'. A value of zero in either case | |
5382 | * means "infinite". */ | |
5383 | static void | |
5384 | reduce_timeout(uint16_t max, uint16_t *timeout) | |
5385 | { | |
5386 | if (max && (!*timeout || *timeout > max)) { | |
5387 | *timeout = max; | |
5388 | } | |
5389 | } | |
5390 | ||
5391 | /* If 'idle_timeout' is nonzero, and 'rule' has no idle timeout or an idle | |
5392 | * timeout greater than 'idle_timeout', lowers 'rule''s idle timeout to | |
5393 | * 'idle_timeout' seconds. Similarly for 'hard_timeout'. | |
5394 | * | |
5395 | * Suitable for implementing OFPACT_FIN_TIMEOUT. */ | |
5396 | void | |
5397 | ofproto_rule_reduce_timeouts(struct rule *rule, | |
5398 | uint16_t idle_timeout, uint16_t hard_timeout) | |
d10976b7 | 5399 | OVS_EXCLUDED(ofproto_mutex, rule->mutex) |
994c9973 BP |
5400 | { |
5401 | if (!idle_timeout && !hard_timeout) { | |
5402 | return; | |
5403 | } | |
5404 | ||
abe7b10f | 5405 | ovs_mutex_lock(&ofproto_mutex); |
417e7e66 BW |
5406 | if (ovs_list_is_empty(&rule->expirable)) { |
5407 | ovs_list_insert(&rule->ofproto->expirable, &rule->expirable); | |
994c9973 | 5408 | } |
abe7b10f | 5409 | ovs_mutex_unlock(&ofproto_mutex); |
994c9973 | 5410 | |
d10976b7 | 5411 | ovs_mutex_lock(&rule->mutex); |
994c9973 BP |
5412 | reduce_timeout(idle_timeout, &rule->idle_timeout); |
5413 | reduce_timeout(hard_timeout, &rule->hard_timeout); | |
d10976b7 | 5414 | ovs_mutex_unlock(&rule->mutex); |
994c9973 | 5415 | } |
79eee1eb | 5416 | \f |
90bf1e07 | 5417 | static enum ofperr |
2e4f5fcf | 5418 | handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
15aaf599 | 5419 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 5420 | { |
a5b8d268 | 5421 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
8be00367 | 5422 | struct ofproto_flow_mod ofm; |
f25d0cf3 BP |
5423 | uint64_t ofpacts_stub[1024 / 8]; |
5424 | struct ofpbuf ofpacts; | |
90bf1e07 | 5425 | enum ofperr error; |
064af421 | 5426 | |
76589937 | 5427 | error = reject_slave_controller(ofconn); |
9deba63b | 5428 | if (error) { |
b0d38b2f | 5429 | return error; |
9deba63b | 5430 | } |
3052b0c5 | 5431 | |
f25d0cf3 | 5432 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
8be00367 | 5433 | error = ofputil_decode_flow_mod(&ofm.fm, oh, ofconn_get_protocol(ofconn), |
7e9f8266 BP |
5434 | &ofpacts, |
5435 | u16_to_ofp(ofproto->max_ports), | |
5436 | ofproto->n_tables); | |
548de4dd | 5437 | if (!error) { |
0a0d9385 | 5438 | struct openflow_mod_requester req = { ofconn, oh }; |
8be00367 | 5439 | error = handle_flow_mod__(ofproto, &ofm, &req); |
49bdc010 | 5440 | } |
2e310801 | 5441 | |
f25d0cf3 | 5442 | ofpbuf_uninit(&ofpacts); |
f25d0cf3 | 5443 | return error; |
75a75043 BP |
5444 | } |
5445 | ||
90bf1e07 | 5446 | static enum ofperr |
8be00367 | 5447 | handle_flow_mod__(struct ofproto *ofproto, struct ofproto_flow_mod *ofm, |
0a0d9385 | 5448 | const struct openflow_mod_requester *req) |
15aaf599 | 5449 | OVS_EXCLUDED(ofproto_mutex) |
75a75043 | 5450 | { |
35412852 | 5451 | enum ofperr error; |
75a75043 | 5452 | |
15aaf599 | 5453 | ovs_mutex_lock(&ofproto_mutex); |
8be00367 JR |
5454 | ofm->version = ofproto->tables_version + 1; |
5455 | error = ofproto_flow_mod_start(ofproto, ofm); | |
1f42be1c | 5456 | if (!error) { |
39c94593 | 5457 | ofproto_bump_tables_version(ofproto); |
8be00367 | 5458 | ofproto_flow_mod_finish(ofproto, ofm, req); |
3052b0c5 | 5459 | } |
baae3d02 | 5460 | ofmonitor_flush(ofproto->connmgr); |
15aaf599 | 5461 | ovs_mutex_unlock(&ofproto_mutex); |
35412852 BP |
5462 | |
5463 | run_rule_executes(ofproto); | |
5464 | return error; | |
3052b0c5 BP |
5465 | } |
5466 | ||
90bf1e07 | 5467 | static enum ofperr |
d1e2cf21 | 5468 | handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh) |
9deba63b | 5469 | { |
f4f1ea7e BP |
5470 | struct ofputil_role_request request; |
5471 | struct ofputil_role_request reply; | |
9deba63b | 5472 | struct ofpbuf *buf; |
6ea4776b JR |
5473 | enum ofperr error; |
5474 | ||
f4f1ea7e | 5475 | error = ofputil_decode_role_message(oh, &request); |
6ea4776b JR |
5476 | if (error) { |
5477 | return error; | |
5478 | } | |
9deba63b | 5479 | |
f4f1ea7e | 5480 | if (request.role != OFPCR12_ROLE_NOCHANGE) { |
d26eda9f BP |
5481 | if (request.role != OFPCR12_ROLE_EQUAL |
5482 | && request.have_generation_id | |
f4f1ea7e BP |
5483 | && !ofconn_set_master_election_id(ofconn, request.generation_id)) { |
5484 | return OFPERR_OFPRRFC_STALE; | |
6ea4776b | 5485 | } |
6ea4776b | 5486 | |
f4f1ea7e BP |
5487 | ofconn_set_role(ofconn, request.role); |
5488 | } | |
9deba63b | 5489 | |
f4f1ea7e | 5490 | reply.role = ofconn_get_role(ofconn); |
147cc9d3 BP |
5491 | reply.have_generation_id = ofconn_get_master_election_id( |
5492 | ofconn, &reply.generation_id); | |
f4f1ea7e | 5493 | buf = ofputil_encode_role_reply(oh, &reply); |
b0421aa2 | 5494 | ofconn_send_reply(ofconn, buf); |
9deba63b BP |
5495 | |
5496 | return 0; | |
5497 | } | |
5498 | ||
90bf1e07 | 5499 | static enum ofperr |
6c1491fb BP |
5500 | handle_nxt_flow_mod_table_id(struct ofconn *ofconn, |
5501 | const struct ofp_header *oh) | |
5502 | { | |
982697a4 | 5503 | const struct nx_flow_mod_table_id *msg = ofpmsg_body(oh); |
27527aa0 BP |
5504 | enum ofputil_protocol cur, next; |
5505 | ||
5506 | cur = ofconn_get_protocol(ofconn); | |
5507 | next = ofputil_protocol_set_tid(cur, msg->set != 0); | |
5508 | ofconn_set_protocol(ofconn, next); | |
6c1491fb | 5509 | |
6c1491fb BP |
5510 | return 0; |
5511 | } | |
5512 | ||
90bf1e07 | 5513 | static enum ofperr |
d1e2cf21 | 5514 | handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh) |
09246b99 | 5515 | { |
982697a4 | 5516 | const struct nx_set_flow_format *msg = ofpmsg_body(oh); |
27527aa0 BP |
5517 | enum ofputil_protocol cur, next; |
5518 | enum ofputil_protocol next_base; | |
09246b99 | 5519 | |
27527aa0 BP |
5520 | next_base = ofputil_nx_flow_format_to_protocol(ntohl(msg->format)); |
5521 | if (!next_base) { | |
90bf1e07 | 5522 | return OFPERR_OFPBRC_EPERM; |
09246b99 | 5523 | } |
7ee20df1 | 5524 | |
27527aa0 BP |
5525 | cur = ofconn_get_protocol(ofconn); |
5526 | next = ofputil_protocol_set_base(cur, next_base); | |
27527aa0 | 5527 | ofconn_set_protocol(ofconn, next); |
b20f4073 | 5528 | |
7ee20df1 | 5529 | return 0; |
09246b99 BP |
5530 | } |
5531 | ||
90bf1e07 | 5532 | static enum ofperr |
54834960 EJ |
5533 | handle_nxt_set_packet_in_format(struct ofconn *ofconn, |
5534 | const struct ofp_header *oh) | |
5535 | { | |
982697a4 | 5536 | const struct nx_set_packet_in_format *msg = ofpmsg_body(oh); |
54834960 EJ |
5537 | uint32_t format; |
5538 | ||
54834960 | 5539 | format = ntohl(msg->format); |
6409e008 | 5540 | if (!ofputil_packet_in_format_is_valid(format)) { |
90bf1e07 | 5541 | return OFPERR_OFPBRC_EPERM; |
54834960 EJ |
5542 | } |
5543 | ||
54834960 EJ |
5544 | ofconn_set_packet_in_format(ofconn, format); |
5545 | return 0; | |
5546 | } | |
5547 | ||
80d5aefd BP |
5548 | static enum ofperr |
5549 | handle_nxt_set_async_config(struct ofconn *ofconn, const struct ofp_header *oh) | |
5550 | { | |
5876b4db BP |
5551 | struct ofputil_async_cfg basis = ofconn_get_async_config(ofconn); |
5552 | struct ofputil_async_cfg ac; | |
d18cc1ee | 5553 | enum ofperr error; |
80d5aefd | 5554 | |
5876b4db | 5555 | error = ofputil_decode_set_async_config(oh, false, &basis, &ac); |
d18cc1ee AA |
5556 | if (error) { |
5557 | return error; | |
5558 | } | |
80d5aefd | 5559 | |
a930d4c5 | 5560 | ofconn_set_async_config(ofconn, &ac); |
4550b647 MM |
5561 | if (ofconn_get_type(ofconn) == OFCONN_SERVICE && |
5562 | !ofconn_get_miss_send_len(ofconn)) { | |
5563 | ofconn_set_miss_send_len(ofconn, OFP_DEFAULT_MISS_SEND_LEN); | |
5564 | } | |
80d5aefd BP |
5565 | |
5566 | return 0; | |
5567 | } | |
5568 | ||
c423b3b3 AC |
5569 | static enum ofperr |
5570 | handle_nxt_get_async_request(struct ofconn *ofconn, const struct ofp_header *oh) | |
5571 | { | |
a930d4c5 | 5572 | struct ofputil_async_cfg ac = ofconn_get_async_config(ofconn); |
af7bc161 | 5573 | ofconn_send_reply(ofconn, ofputil_encode_get_async_reply(oh, &ac)); |
c423b3b3 AC |
5574 | |
5575 | return 0; | |
5576 | } | |
5577 | ||
a7349929 BP |
5578 | static enum ofperr |
5579 | handle_nxt_set_controller_id(struct ofconn *ofconn, | |
5580 | const struct ofp_header *oh) | |
5581 | { | |
982697a4 | 5582 | const struct nx_controller_id *nci = ofpmsg_body(oh); |
a7349929 | 5583 | |
a7349929 BP |
5584 | if (!is_all_zeros(nci->zero, sizeof nci->zero)) { |
5585 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
5586 | } | |
5587 | ||
5588 | ofconn_set_controller_id(ofconn, ntohs(nci->controller_id)); | |
5589 | return 0; | |
5590 | } | |
5591 | ||
90bf1e07 | 5592 | static enum ofperr |
d1e2cf21 | 5593 | handle_barrier_request(struct ofconn *ofconn, const struct ofp_header *oh) |
246e61ea | 5594 | { |
246e61ea JP |
5595 | struct ofpbuf *buf; |
5596 | ||
982697a4 BP |
5597 | buf = ofpraw_alloc_reply((oh->version == OFP10_VERSION |
5598 | ? OFPRAW_OFPT10_BARRIER_REPLY | |
5599 | : OFPRAW_OFPT11_BARRIER_REPLY), oh, 0); | |
b0421aa2 | 5600 | ofconn_send_reply(ofconn, buf); |
246e61ea JP |
5601 | return 0; |
5602 | } | |
5603 | ||
2b07c8b1 BP |
5604 | static void |
5605 | ofproto_compose_flow_refresh_update(const struct rule *rule, | |
5606 | enum nx_flow_monitor_flags flags, | |
ca6ba700 | 5607 | struct ovs_list *msgs) |
15aaf599 | 5608 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 | 5609 | { |
6f00e29b | 5610 | const struct rule_actions *actions; |
2b07c8b1 | 5611 | struct ofputil_flow_update fu; |
5cb7a798 | 5612 | struct match match; |
2b07c8b1 | 5613 | |
2b07c8b1 BP |
5614 | fu.event = (flags & (NXFMF_INITIAL | NXFMF_ADD) |
5615 | ? NXFME_ADDED : NXFME_MODIFIED); | |
5616 | fu.reason = 0; | |
d10976b7 | 5617 | ovs_mutex_lock(&rule->mutex); |
2b07c8b1 BP |
5618 | fu.idle_timeout = rule->idle_timeout; |
5619 | fu.hard_timeout = rule->hard_timeout; | |
d10976b7 | 5620 | ovs_mutex_unlock(&rule->mutex); |
2b07c8b1 BP |
5621 | fu.table_id = rule->table_id; |
5622 | fu.cookie = rule->flow_cookie; | |
5cb7a798 BP |
5623 | minimatch_expand(&rule->cr.match, &match); |
5624 | fu.match = &match; | |
6b140a4e | 5625 | fu.priority = rule->cr.priority; |
6f00e29b | 5626 | |
b20f4073 | 5627 | actions = flags & NXFMF_ACTIONS ? rule_get_actions(rule) : NULL; |
6f00e29b BP |
5628 | fu.ofpacts = actions ? actions->ofpacts : NULL; |
5629 | fu.ofpacts_len = actions ? actions->ofpacts_len : 0; | |
2b07c8b1 | 5630 | |
417e7e66 | 5631 | if (ovs_list_is_empty(msgs)) { |
2b07c8b1 BP |
5632 | ofputil_start_flow_update(msgs); |
5633 | } | |
5634 | ofputil_append_flow_update(&fu, msgs); | |
5635 | } | |
5636 | ||
5637 | void | |
a8e547c1 | 5638 | ofmonitor_compose_refresh_updates(struct rule_collection *rules, |
ca6ba700 | 5639 | struct ovs_list *msgs) |
15aaf599 | 5640 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 | 5641 | { |
fe59694b | 5642 | struct rule *rule; |
2b07c8b1 | 5643 | |
fe59694b | 5644 | RULE_COLLECTION_FOR_EACH (rule, rules) { |
2b07c8b1 BP |
5645 | enum nx_flow_monitor_flags flags = rule->monitor_flags; |
5646 | rule->monitor_flags = 0; | |
5647 | ||
5648 | ofproto_compose_flow_refresh_update(rule, flags, msgs); | |
5649 | } | |
5650 | } | |
5651 | ||
5652 | static void | |
5653 | ofproto_collect_ofmonitor_refresh_rule(const struct ofmonitor *m, | |
5654 | struct rule *rule, uint64_t seqno, | |
a8e547c1 | 5655 | struct rule_collection *rules) |
15aaf599 | 5656 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
5657 | { |
5658 | enum nx_flow_monitor_flags update; | |
5659 | ||
5e8b38b0 | 5660 | if (rule_is_hidden(rule)) { |
2b07c8b1 BP |
5661 | return; |
5662 | } | |
5663 | ||
b20f4073 | 5664 | if (!ofproto_rule_has_out_port(rule, m->out_port)) { |
2b07c8b1 BP |
5665 | return; |
5666 | } | |
5667 | ||
5668 | if (seqno) { | |
5669 | if (rule->add_seqno > seqno) { | |
5670 | update = NXFMF_ADD | NXFMF_MODIFY; | |
5671 | } else if (rule->modify_seqno > seqno) { | |
5672 | update = NXFMF_MODIFY; | |
5673 | } else { | |
5674 | return; | |
5675 | } | |
5676 | ||
5677 | if (!(m->flags & update)) { | |
5678 | return; | |
5679 | } | |
5680 | } else { | |
5681 | update = NXFMF_INITIAL; | |
5682 | } | |
5683 | ||
5684 | if (!rule->monitor_flags) { | |
a8e547c1 | 5685 | rule_collection_add(rules, rule); |
2b07c8b1 BP |
5686 | } |
5687 | rule->monitor_flags |= update | (m->flags & NXFMF_ACTIONS); | |
5688 | } | |
5689 | ||
5690 | static void | |
5691 | ofproto_collect_ofmonitor_refresh_rules(const struct ofmonitor *m, | |
5692 | uint64_t seqno, | |
a8e547c1 | 5693 | struct rule_collection *rules) |
15aaf599 | 5694 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
5695 | { |
5696 | const struct ofproto *ofproto = ofconn_get_ofproto(m->ofconn); | |
2b07c8b1 | 5697 | const struct oftable *table; |
81a76618 | 5698 | struct cls_rule target; |
2b07c8b1 | 5699 | |
bd53aa17 | 5700 | cls_rule_init_from_minimatch(&target, &m->match, 0); |
2b07c8b1 | 5701 | FOR_EACH_MATCHING_TABLE (table, m->table_id, ofproto) { |
2b07c8b1 BP |
5702 | struct rule *rule; |
5703 | ||
44e0c35d | 5704 | CLS_FOR_EACH_TARGET (rule, cr, &table->cls, &target, OVS_VERSION_MAX) { |
2b07c8b1 BP |
5705 | ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules); |
5706 | } | |
5707 | } | |
48d28ac1 | 5708 | cls_rule_destroy(&target); |
2b07c8b1 BP |
5709 | } |
5710 | ||
5711 | static void | |
5712 | ofproto_collect_ofmonitor_initial_rules(struct ofmonitor *m, | |
a8e547c1 | 5713 | struct rule_collection *rules) |
15aaf599 | 5714 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
5715 | { |
5716 | if (m->flags & NXFMF_INITIAL) { | |
5717 | ofproto_collect_ofmonitor_refresh_rules(m, 0, rules); | |
5718 | } | |
5719 | } | |
5720 | ||
5721 | void | |
5722 | ofmonitor_collect_resume_rules(struct ofmonitor *m, | |
a8e547c1 | 5723 | uint64_t seqno, struct rule_collection *rules) |
15aaf599 | 5724 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
5725 | { |
5726 | ofproto_collect_ofmonitor_refresh_rules(m, seqno, rules); | |
5727 | } | |
5728 | ||
7b900689 SH |
5729 | static enum ofperr |
5730 | flow_monitor_delete(struct ofconn *ofconn, uint32_t id) | |
5731 | OVS_REQUIRES(ofproto_mutex) | |
5732 | { | |
5733 | struct ofmonitor *m; | |
5734 | enum ofperr error; | |
5735 | ||
5736 | m = ofmonitor_lookup(ofconn, id); | |
5737 | if (m) { | |
5738 | ofmonitor_destroy(m); | |
5739 | error = 0; | |
5740 | } else { | |
5741 | error = OFPERR_OFPMOFC_UNKNOWN_MONITOR; | |
5742 | } | |
5743 | ||
5744 | return error; | |
5745 | } | |
5746 | ||
2b07c8b1 | 5747 | static enum ofperr |
982697a4 | 5748 | handle_flow_monitor_request(struct ofconn *ofconn, const struct ofp_header *oh) |
15aaf599 | 5749 | OVS_EXCLUDED(ofproto_mutex) |
2b07c8b1 BP |
5750 | { |
5751 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
2b07c8b1 | 5752 | |
0a2869d5 BP |
5753 | struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length)); |
5754 | ||
5755 | struct ofmonitor **monitors = NULL; | |
5756 | size_t allocated_monitors = 0; | |
5757 | size_t n_monitors = 0; | |
5758 | ||
5759 | enum ofperr error; | |
15aaf599 BP |
5760 | |
5761 | ovs_mutex_lock(&ofproto_mutex); | |
2b07c8b1 BP |
5762 | for (;;) { |
5763 | struct ofputil_flow_monitor_request request; | |
5764 | struct ofmonitor *m; | |
5765 | int retval; | |
5766 | ||
5767 | retval = ofputil_decode_flow_monitor_request(&request, &b); | |
5768 | if (retval == EOF) { | |
5769 | break; | |
5770 | } else if (retval) { | |
5771 | error = retval; | |
5772 | goto error; | |
5773 | } | |
5774 | ||
5775 | if (request.table_id != 0xff | |
5776 | && request.table_id >= ofproto->n_tables) { | |
5777 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
5778 | goto error; | |
5779 | } | |
5780 | ||
5781 | error = ofmonitor_create(&request, ofconn, &m); | |
5782 | if (error) { | |
5783 | goto error; | |
5784 | } | |
5785 | ||
5786 | if (n_monitors >= allocated_monitors) { | |
5787 | monitors = x2nrealloc(monitors, &allocated_monitors, | |
5788 | sizeof *monitors); | |
5789 | } | |
5790 | monitors[n_monitors++] = m; | |
5791 | } | |
5792 | ||
0a2869d5 | 5793 | struct rule_collection rules; |
a8e547c1 | 5794 | rule_collection_init(&rules); |
0a2869d5 | 5795 | for (size_t i = 0; i < n_monitors; i++) { |
2b07c8b1 BP |
5796 | ofproto_collect_ofmonitor_initial_rules(monitors[i], &rules); |
5797 | } | |
5798 | ||
0a2869d5 | 5799 | struct ovs_list replies; |
982697a4 | 5800 | ofpmp_init(&replies, oh); |
2b07c8b1 | 5801 | ofmonitor_compose_refresh_updates(&rules, &replies); |
15aaf599 BP |
5802 | ovs_mutex_unlock(&ofproto_mutex); |
5803 | ||
a8e547c1 BP |
5804 | rule_collection_destroy(&rules); |
5805 | ||
2b07c8b1 | 5806 | ofconn_send_replies(ofconn, &replies); |
2b07c8b1 BP |
5807 | free(monitors); |
5808 | ||
5809 | return 0; | |
5810 | ||
5811 | error: | |
0a2869d5 | 5812 | for (size_t i = 0; i < n_monitors; i++) { |
2b07c8b1 BP |
5813 | ofmonitor_destroy(monitors[i]); |
5814 | } | |
5815 | free(monitors); | |
4cd1bc9d BP |
5816 | ovs_mutex_unlock(&ofproto_mutex); |
5817 | ||
2b07c8b1 BP |
5818 | return error; |
5819 | } | |
5820 | ||
5821 | static enum ofperr | |
5822 | handle_flow_monitor_cancel(struct ofconn *ofconn, const struct ofp_header *oh) | |
15aaf599 | 5823 | OVS_EXCLUDED(ofproto_mutex) |
2b07c8b1 | 5824 | { |
15aaf599 | 5825 | enum ofperr error; |
2b07c8b1 BP |
5826 | uint32_t id; |
5827 | ||
5828 | id = ofputil_decode_flow_monitor_cancel(oh); | |
15aaf599 BP |
5829 | |
5830 | ovs_mutex_lock(&ofproto_mutex); | |
7b900689 | 5831 | error = flow_monitor_delete(ofconn, id); |
15aaf599 | 5832 | ovs_mutex_unlock(&ofproto_mutex); |
2b07c8b1 | 5833 | |
15aaf599 | 5834 | return error; |
2b07c8b1 BP |
5835 | } |
5836 | ||
9cae45dc JR |
5837 | /* Meters implementation. |
5838 | * | |
5839 | * Meter table entry, indexed by the OpenFlow meter_id. | |
9cae45dc JR |
5840 | * 'created' is used to compute the duration for meter stats. |
5841 | * 'list rules' is needed so that we can delete the dependent rules when the | |
5842 | * meter table entry is deleted. | |
5843 | * 'provider_meter_id' is for the provider's private use. | |
5844 | */ | |
5845 | struct meter { | |
5846 | long long int created; /* Time created. */ | |
ca6ba700 | 5847 | struct ovs_list rules; /* List of "struct rule_dpif"s. */ |
9cae45dc JR |
5848 | ofproto_meter_id provider_meter_id; |
5849 | uint16_t flags; /* Meter flags. */ | |
5850 | uint16_t n_bands; /* Number of meter bands. */ | |
5851 | struct ofputil_meter_band *bands; | |
5852 | }; | |
5853 | ||
5854 | /* | |
5855 | * This is used in instruction validation at flow set-up time, | |
5856 | * as flows may not use non-existing meters. | |
9cae45dc JR |
5857 | * Return value of UINT32_MAX signifies an invalid meter. |
5858 | */ | |
65efd2ab JR |
5859 | static uint32_t |
5860 | get_provider_meter_id(const struct ofproto *ofproto, uint32_t of_meter_id) | |
9cae45dc JR |
5861 | { |
5862 | if (of_meter_id && of_meter_id <= ofproto->meter_features.max_meters) { | |
5863 | const struct meter *meter = ofproto->meters[of_meter_id]; | |
5864 | if (meter) { | |
5865 | return meter->provider_meter_id.uint32; | |
5866 | } | |
5867 | } | |
5868 | return UINT32_MAX; | |
5869 | } | |
5870 | ||
062fea06 BP |
5871 | /* Finds the meter invoked by 'rule''s actions and adds 'rule' to the meter's |
5872 | * list of rules. */ | |
5873 | static void | |
5874 | meter_insert_rule(struct rule *rule) | |
5875 | { | |
5876 | const struct rule_actions *a = rule_get_actions(rule); | |
5877 | uint32_t meter_id = ofpacts_get_meter(a->ofpacts, a->ofpacts_len); | |
5878 | struct meter *meter = rule->ofproto->meters[meter_id]; | |
5879 | ||
417e7e66 | 5880 | ovs_list_insert(&meter->rules, &rule->meter_list_node); |
062fea06 BP |
5881 | } |
5882 | ||
9cae45dc JR |
5883 | static void |
5884 | meter_update(struct meter *meter, const struct ofputil_meter_config *config) | |
5885 | { | |
5886 | free(meter->bands); | |
5887 | ||
5888 | meter->flags = config->flags; | |
5889 | meter->n_bands = config->n_bands; | |
5890 | meter->bands = xmemdup(config->bands, | |
5891 | config->n_bands * sizeof *meter->bands); | |
5892 | } | |
5893 | ||
5894 | static struct meter * | |
5895 | meter_create(const struct ofputil_meter_config *config, | |
5896 | ofproto_meter_id provider_meter_id) | |
5897 | { | |
5898 | struct meter *meter; | |
5899 | ||
5900 | meter = xzalloc(sizeof *meter); | |
5901 | meter->provider_meter_id = provider_meter_id; | |
5902 | meter->created = time_msec(); | |
417e7e66 | 5903 | ovs_list_init(&meter->rules); |
9cae45dc JR |
5904 | |
5905 | meter_update(meter, config); | |
5906 | ||
5907 | return meter; | |
5908 | } | |
5909 | ||
6b3f7f02 JR |
5910 | static void |
5911 | meter_delete(struct ofproto *ofproto, uint32_t first, uint32_t last) | |
15aaf599 | 5912 | OVS_REQUIRES(ofproto_mutex) |
6b3f7f02 JR |
5913 | { |
5914 | uint32_t mid; | |
5915 | for (mid = first; mid <= last; ++mid) { | |
5916 | struct meter *meter = ofproto->meters[mid]; | |
5917 | if (meter) { | |
5918 | ofproto->meters[mid] = NULL; | |
5919 | ofproto->ofproto_class->meter_del(ofproto, | |
5920 | meter->provider_meter_id); | |
5921 | free(meter->bands); | |
5922 | free(meter); | |
5923 | } | |
5924 | } | |
5925 | } | |
5926 | ||
9cae45dc JR |
5927 | static enum ofperr |
5928 | handle_add_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm) | |
5929 | { | |
5930 | ofproto_meter_id provider_meter_id = { UINT32_MAX }; | |
5931 | struct meter **meterp = &ofproto->meters[mm->meter.meter_id]; | |
5932 | enum ofperr error; | |
5933 | ||
5934 | if (*meterp) { | |
5935 | return OFPERR_OFPMMFC_METER_EXISTS; | |
5936 | } | |
5937 | ||
5938 | error = ofproto->ofproto_class->meter_set(ofproto, &provider_meter_id, | |
5939 | &mm->meter); | |
5940 | if (!error) { | |
5941 | ovs_assert(provider_meter_id.uint32 != UINT32_MAX); | |
5942 | *meterp = meter_create(&mm->meter, provider_meter_id); | |
5943 | } | |
f0f8c6c2 | 5944 | return error; |
9cae45dc JR |
5945 | } |
5946 | ||
5947 | static enum ofperr | |
5948 | handle_modify_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm) | |
5949 | { | |
5950 | struct meter *meter = ofproto->meters[mm->meter.meter_id]; | |
5951 | enum ofperr error; | |
e555eb7c | 5952 | uint32_t provider_meter_id; |
9cae45dc JR |
5953 | |
5954 | if (!meter) { | |
5955 | return OFPERR_OFPMMFC_UNKNOWN_METER; | |
5956 | } | |
5957 | ||
e555eb7c | 5958 | provider_meter_id = meter->provider_meter_id.uint32; |
9cae45dc JR |
5959 | error = ofproto->ofproto_class->meter_set(ofproto, |
5960 | &meter->provider_meter_id, | |
5961 | &mm->meter); | |
e555eb7c | 5962 | ovs_assert(meter->provider_meter_id.uint32 == provider_meter_id); |
9cae45dc JR |
5963 | if (!error) { |
5964 | meter_update(meter, &mm->meter); | |
5965 | } | |
5966 | return error; | |
5967 | } | |
5968 | ||
5969 | static enum ofperr | |
baae3d02 | 5970 | handle_delete_meter(struct ofconn *ofconn, struct ofputil_meter_mod *mm) |
15aaf599 | 5971 | OVS_EXCLUDED(ofproto_mutex) |
9cae45dc JR |
5972 | { |
5973 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5974 | uint32_t meter_id = mm->meter.meter_id; | |
a8e547c1 BP |
5975 | struct rule_collection rules; |
5976 | enum ofperr error = 0; | |
9cae45dc | 5977 | uint32_t first, last; |
9cae45dc JR |
5978 | |
5979 | if (meter_id == OFPM13_ALL) { | |
5980 | first = 1; | |
5981 | last = ofproto->meter_features.max_meters; | |
5982 | } else { | |
5983 | if (!meter_id || meter_id > ofproto->meter_features.max_meters) { | |
5984 | return 0; | |
5985 | } | |
5986 | first = last = meter_id; | |
5987 | } | |
5988 | ||
5989 | /* First delete the rules that use this meter. If any of those rules are | |
5990 | * currently being modified, postpone the whole operation until later. */ | |
a8e547c1 | 5991 | rule_collection_init(&rules); |
15aaf599 | 5992 | ovs_mutex_lock(&ofproto_mutex); |
9cae45dc JR |
5993 | for (meter_id = first; meter_id <= last; ++meter_id) { |
5994 | struct meter *meter = ofproto->meters[meter_id]; | |
417e7e66 | 5995 | if (meter && !ovs_list_is_empty(&meter->rules)) { |
9cae45dc JR |
5996 | struct rule *rule; |
5997 | ||
5998 | LIST_FOR_EACH (rule, meter_list_node, &meter->rules) { | |
a8e547c1 | 5999 | rule_collection_add(&rules, rule); |
9cae45dc JR |
6000 | } |
6001 | } | |
6002 | } | |
802f84ff | 6003 | delete_flows__(&rules, OFPRR_METER_DELETE, NULL); |
9cae45dc JR |
6004 | |
6005 | /* Delete the meters. */ | |
6b3f7f02 | 6006 | meter_delete(ofproto, first, last); |
9cae45dc | 6007 | |
15aaf599 | 6008 | ovs_mutex_unlock(&ofproto_mutex); |
a8e547c1 BP |
6009 | |
6010 | return error; | |
9cae45dc JR |
6011 | } |
6012 | ||
6013 | static enum ofperr | |
6014 | handle_meter_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
6015 | { | |
6016 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
6017 | struct ofputil_meter_mod mm; | |
6018 | uint64_t bands_stub[256 / 8]; | |
6019 | struct ofpbuf bands; | |
6020 | uint32_t meter_id; | |
6021 | enum ofperr error; | |
6022 | ||
6023 | error = reject_slave_controller(ofconn); | |
6024 | if (error) { | |
6025 | return error; | |
6026 | } | |
6027 | ||
6028 | ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub); | |
6029 | ||
6030 | error = ofputil_decode_meter_mod(oh, &mm, &bands); | |
6031 | if (error) { | |
6032 | goto exit_free_bands; | |
6033 | } | |
6034 | ||
6035 | meter_id = mm.meter.meter_id; | |
6036 | ||
6037 | if (mm.command != OFPMC13_DELETE) { | |
6038 | /* Fails also when meters are not implemented by the provider. */ | |
b31e8700 | 6039 | if (meter_id == 0 || meter_id > OFPM13_MAX) { |
9cae45dc JR |
6040 | error = OFPERR_OFPMMFC_INVALID_METER; |
6041 | goto exit_free_bands; | |
b31e8700 JR |
6042 | } else if (meter_id > ofproto->meter_features.max_meters) { |
6043 | error = OFPERR_OFPMMFC_OUT_OF_METERS; | |
6044 | goto exit_free_bands; | |
9cae45dc JR |
6045 | } |
6046 | if (mm.meter.n_bands > ofproto->meter_features.max_bands) { | |
6047 | error = OFPERR_OFPMMFC_OUT_OF_BANDS; | |
6048 | goto exit_free_bands; | |
6049 | } | |
6050 | } | |
6051 | ||
6052 | switch (mm.command) { | |
6053 | case OFPMC13_ADD: | |
6054 | error = handle_add_meter(ofproto, &mm); | |
6055 | break; | |
6056 | ||
6057 | case OFPMC13_MODIFY: | |
6058 | error = handle_modify_meter(ofproto, &mm); | |
6059 | break; | |
6060 | ||
6061 | case OFPMC13_DELETE: | |
baae3d02 | 6062 | error = handle_delete_meter(ofconn, &mm); |
9cae45dc JR |
6063 | break; |
6064 | ||
6065 | default: | |
6066 | error = OFPERR_OFPMMFC_BAD_COMMAND; | |
6067 | break; | |
6068 | } | |
6069 | ||
3c35db62 NR |
6070 | if (!error) { |
6071 | struct ofputil_requestforward rf; | |
6072 | rf.xid = oh->xid; | |
6073 | rf.reason = OFPRFR_METER_MOD; | |
6074 | rf.meter_mod = &mm; | |
6075 | connmgr_send_requestforward(ofproto->connmgr, ofconn, &rf); | |
6076 | } | |
6077 | ||
9cae45dc JR |
6078 | exit_free_bands: |
6079 | ofpbuf_uninit(&bands); | |
6080 | return error; | |
6081 | } | |
6082 | ||
6083 | static enum ofperr | |
6084 | handle_meter_features_request(struct ofconn *ofconn, | |
6085 | const struct ofp_header *request) | |
6086 | { | |
6087 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
6088 | struct ofputil_meter_features features; | |
6089 | struct ofpbuf *b; | |
6090 | ||
6091 | if (ofproto->ofproto_class->meter_get_features) { | |
6092 | ofproto->ofproto_class->meter_get_features(ofproto, &features); | |
6093 | } else { | |
6094 | memset(&features, 0, sizeof features); | |
6095 | } | |
6096 | b = ofputil_encode_meter_features_reply(&features, request); | |
6097 | ||
6098 | ofconn_send_reply(ofconn, b); | |
6099 | return 0; | |
6100 | } | |
6101 | ||
6102 | static enum ofperr | |
6103 | handle_meter_request(struct ofconn *ofconn, const struct ofp_header *request, | |
6104 | enum ofptype type) | |
6105 | { | |
6106 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
ca6ba700 | 6107 | struct ovs_list replies; |
9cae45dc JR |
6108 | uint64_t bands_stub[256 / 8]; |
6109 | struct ofpbuf bands; | |
6110 | uint32_t meter_id, first, last; | |
6111 | ||
6112 | ofputil_decode_meter_request(request, &meter_id); | |
6113 | ||
6114 | if (meter_id == OFPM13_ALL) { | |
6115 | first = 1; | |
6116 | last = ofproto->meter_features.max_meters; | |
6117 | } else { | |
6118 | if (!meter_id || meter_id > ofproto->meter_features.max_meters || | |
6119 | !ofproto->meters[meter_id]) { | |
6120 | return OFPERR_OFPMMFC_UNKNOWN_METER; | |
6121 | } | |
6122 | first = last = meter_id; | |
6123 | } | |
6124 | ||
6125 | ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub); | |
6126 | ofpmp_init(&replies, request); | |
6127 | ||
6128 | for (meter_id = first; meter_id <= last; ++meter_id) { | |
6129 | struct meter *meter = ofproto->meters[meter_id]; | |
6130 | if (!meter) { | |
6131 | continue; /* Skip non-existing meters. */ | |
6132 | } | |
261bd854 | 6133 | if (type == OFPTYPE_METER_STATS_REQUEST) { |
9cae45dc JR |
6134 | struct ofputil_meter_stats stats; |
6135 | ||
6136 | stats.meter_id = meter_id; | |
6137 | ||
6138 | /* Provider sets the packet and byte counts, we do the rest. */ | |
417e7e66 | 6139 | stats.flow_count = ovs_list_size(&meter->rules); |
9cae45dc JR |
6140 | calc_duration(meter->created, time_msec(), |
6141 | &stats.duration_sec, &stats.duration_nsec); | |
6142 | stats.n_bands = meter->n_bands; | |
6143 | ofpbuf_clear(&bands); | |
6144 | stats.bands | |
6145 | = ofpbuf_put_uninit(&bands, | |
6146 | meter->n_bands * sizeof *stats.bands); | |
6147 | ||
6148 | if (!ofproto->ofproto_class->meter_get(ofproto, | |
6149 | meter->provider_meter_id, | |
6150 | &stats)) { | |
6151 | ofputil_append_meter_stats(&replies, &stats); | |
6152 | } | |
6153 | } else { /* type == OFPTYPE_METER_CONFIG_REQUEST */ | |
6154 | struct ofputil_meter_config config; | |
6155 | ||
6156 | config.meter_id = meter_id; | |
6157 | config.flags = meter->flags; | |
6158 | config.n_bands = meter->n_bands; | |
6159 | config.bands = meter->bands; | |
6160 | ofputil_append_meter_config(&replies, &config); | |
6161 | } | |
6162 | } | |
6163 | ||
6164 | ofconn_send_replies(ofconn, &replies); | |
6165 | ofpbuf_uninit(&bands); | |
6166 | return 0; | |
6167 | } | |
6168 | ||
db88b35c JR |
6169 | /* Returned group is RCU protected. */ |
6170 | static struct ofgroup * | |
5d08a275 JR |
6171 | ofproto_group_lookup__(const struct ofproto *ofproto, uint32_t group_id, |
6172 | ovs_version_t version) | |
db88b35c JR |
6173 | { |
6174 | struct ofgroup *group; | |
6175 | ||
6176 | CMAP_FOR_EACH_WITH_HASH (group, cmap_node, hash_int(group_id, 0), | |
6177 | &ofproto->groups) { | |
5d08a275 JR |
6178 | if (group->group_id == group_id |
6179 | && versions_visible_in_version(&group->versions, version)) { | |
db88b35c | 6180 | return group; |
7395c052 NZ |
6181 | } |
6182 | } | |
3fc3b679 | 6183 | |
db88b35c | 6184 | return NULL; |
7395c052 NZ |
6185 | } |
6186 | ||
3fc3b679 AZ |
6187 | /* If the group exists, this function increments the groups's reference count. |
6188 | * | |
6189 | * Make sure to call ofproto_group_unref() after no longer needing to maintain | |
6190 | * a reference to the group. */ | |
db88b35c | 6191 | struct ofgroup * |
76973237 | 6192 | ofproto_group_lookup(const struct ofproto *ofproto, uint32_t group_id, |
5d08a275 | 6193 | ovs_version_t version, bool take_ref) |
7395c052 | 6194 | { |
db88b35c | 6195 | struct ofgroup *group; |
7395c052 | 6196 | |
5d08a275 | 6197 | group = ofproto_group_lookup__(ofproto, group_id, version); |
76973237 | 6198 | if (group && take_ref) { |
db88b35c JR |
6199 | /* Not holding a lock, so it is possible that another thread releases |
6200 | * the last reference just before we manage to get one. */ | |
6201 | return ofproto_group_try_ref(group) ? group : NULL; | |
7395c052 | 6202 | } |
76973237 | 6203 | return group; |
7395c052 NZ |
6204 | } |
6205 | ||
cc099268 | 6206 | /* Caller should hold 'ofproto_mutex' if it is important that the |
db88b35c | 6207 | * group is not removed by someone else. */ |
7e9f8266 BP |
6208 | static bool |
6209 | ofproto_group_exists(const struct ofproto *ofproto, uint32_t group_id) | |
7e9f8266 | 6210 | { |
5d08a275 | 6211 | return ofproto_group_lookup__(ofproto, group_id, OVS_VERSION_MAX) != NULL; |
7e9f8266 BP |
6212 | } |
6213 | ||
cc099268 JR |
6214 | static void |
6215 | group_add_rule(struct ofgroup *group, struct rule *rule) | |
732feb93 | 6216 | { |
cc099268 JR |
6217 | rule_collection_add(&group->rules, rule); |
6218 | } | |
732feb93 | 6219 | |
cc099268 JR |
6220 | static void |
6221 | group_remove_rule(struct ofgroup *group, struct rule *rule) | |
6222 | { | |
6223 | rule_collection_remove(&group->rules, rule); | |
732feb93 SH |
6224 | } |
6225 | ||
7395c052 | 6226 | static void |
ca6ba700 | 6227 | append_group_stats(struct ofgroup *group, struct ovs_list *replies) |
cc099268 | 6228 | OVS_REQUIRES(ofproto_mutex) |
7395c052 NZ |
6229 | { |
6230 | struct ofputil_group_stats ogs; | |
eaf004bd | 6231 | const struct ofproto *ofproto = group->ofproto; |
7395c052 NZ |
6232 | long long int now = time_msec(); |
6233 | int error; | |
6234 | ||
646b2a9c SH |
6235 | ogs.bucket_stats = xmalloc(group->n_buckets * sizeof *ogs.bucket_stats); |
6236 | ||
732feb93 | 6237 | /* Provider sets the packet and byte counts, we do the rest. */ |
fe59694b | 6238 | ogs.ref_count = rule_collection_n(&group->rules); |
732feb93 SH |
6239 | ogs.n_buckets = group->n_buckets; |
6240 | ||
7395c052 NZ |
6241 | error = (ofproto->ofproto_class->group_get_stats |
6242 | ? ofproto->ofproto_class->group_get_stats(group, &ogs) | |
6243 | : EOPNOTSUPP); | |
6244 | if (error) { | |
7395c052 NZ |
6245 | ogs.packet_count = UINT64_MAX; |
6246 | ogs.byte_count = UINT64_MAX; | |
7395c052 NZ |
6247 | memset(ogs.bucket_stats, 0xff, |
6248 | ogs.n_buckets * sizeof *ogs.bucket_stats); | |
6249 | } | |
6250 | ||
6251 | ogs.group_id = group->group_id; | |
6252 | calc_duration(group->created, now, &ogs.duration_sec, &ogs.duration_nsec); | |
6253 | ||
6254 | ofputil_append_group_stats(replies, &ogs); | |
646b2a9c SH |
6255 | |
6256 | free(ogs.bucket_stats); | |
7395c052 NZ |
6257 | } |
6258 | ||
19187a71 BP |
6259 | static void |
6260 | handle_group_request(struct ofconn *ofconn, | |
6261 | const struct ofp_header *request, uint32_t group_id, | |
ca6ba700 | 6262 | void (*cb)(struct ofgroup *, struct ovs_list *replies)) |
cc099268 | 6263 | OVS_EXCLUDED(ofproto_mutex) |
7395c052 NZ |
6264 | { |
6265 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
7395c052 | 6266 | struct ofgroup *group; |
ca6ba700 | 6267 | struct ovs_list replies; |
7395c052 NZ |
6268 | |
6269 | ofpmp_init(&replies, request); | |
cc099268 JR |
6270 | /* Must exclude modifications to guarantee iterating groups. */ |
6271 | ovs_mutex_lock(&ofproto_mutex); | |
7395c052 | 6272 | if (group_id == OFPG_ALL) { |
db88b35c | 6273 | CMAP_FOR_EACH (group, cmap_node, &ofproto->groups) { |
19187a71 | 6274 | cb(group, &replies); |
7395c052 | 6275 | } |
7395c052 | 6276 | } else { |
5d08a275 | 6277 | group = ofproto_group_lookup__(ofproto, group_id, OVS_VERSION_MAX); |
db88b35c | 6278 | if (group) { |
19187a71 | 6279 | cb(group, &replies); |
7395c052 NZ |
6280 | } |
6281 | } | |
cc099268 | 6282 | ovs_mutex_unlock(&ofproto_mutex); |
7395c052 | 6283 | ofconn_send_replies(ofconn, &replies); |
7395c052 NZ |
6284 | } |
6285 | ||
6286 | static enum ofperr | |
19187a71 BP |
6287 | handle_group_stats_request(struct ofconn *ofconn, |
6288 | const struct ofp_header *request) | |
7395c052 | 6289 | { |
19187a71 BP |
6290 | uint32_t group_id; |
6291 | enum ofperr error; | |
7395c052 | 6292 | |
19187a71 BP |
6293 | error = ofputil_decode_group_stats_request(request, &group_id); |
6294 | if (error) { | |
6295 | return error; | |
7395c052 | 6296 | } |
7395c052 | 6297 | |
19187a71 BP |
6298 | handle_group_request(ofconn, request, group_id, append_group_stats); |
6299 | return 0; | |
6300 | } | |
6301 | ||
6302 | static void | |
ca6ba700 | 6303 | append_group_desc(struct ofgroup *group, struct ovs_list *replies) |
19187a71 BP |
6304 | { |
6305 | struct ofputil_group_desc gds; | |
7395c052 | 6306 | |
19187a71 BP |
6307 | gds.group_id = group->group_id; |
6308 | gds.type = group->type; | |
53eb84a5 SH |
6309 | gds.props = group->props; |
6310 | ||
19187a71 BP |
6311 | ofputil_append_group_desc_reply(&gds, &group->buckets, replies); |
6312 | } | |
6313 | ||
6314 | static enum ofperr | |
6315 | handle_group_desc_stats_request(struct ofconn *ofconn, | |
6316 | const struct ofp_header *request) | |
6317 | { | |
6318 | handle_group_request(ofconn, request, | |
6319 | ofputil_decode_group_desc_request(request), | |
6320 | append_group_desc); | |
7395c052 NZ |
6321 | return 0; |
6322 | } | |
6323 | ||
6324 | static enum ofperr | |
6325 | handle_group_features_stats_request(struct ofconn *ofconn, | |
6326 | const struct ofp_header *request) | |
6327 | { | |
6328 | struct ofproto *p = ofconn_get_ofproto(ofconn); | |
6329 | struct ofpbuf *msg; | |
6330 | ||
6331 | msg = ofputil_encode_group_features_reply(&p->ogf, request); | |
6332 | if (msg) { | |
6333 | ofconn_send_reply(ofconn, msg); | |
6334 | } | |
6335 | ||
6336 | return 0; | |
6337 | } | |
6338 | ||
56085be5 | 6339 | static void |
e016fb63 BP |
6340 | put_queue_get_config_reply(struct ofport *port, uint32_t queue, |
6341 | struct ovs_list *replies) | |
e8f9a7bb | 6342 | { |
e016fb63 | 6343 | struct ofputil_queue_config qc; |
e8f9a7bb | 6344 | |
e016fb63 BP |
6345 | /* None of the existing queues have compatible properties, so we hard-code |
6346 | * omitting min_rate and max_rate. */ | |
6347 | qc.port = port->ofp_port; | |
6348 | qc.queue = queue; | |
6349 | qc.min_rate = UINT16_MAX; | |
6350 | qc.max_rate = UINT16_MAX; | |
6351 | ofputil_append_queue_get_config_reply(&qc, replies); | |
6352 | } | |
e8f9a7bb | 6353 | |
e016fb63 BP |
6354 | static int |
6355 | handle_queue_get_config_request_for_port(struct ofport *port, uint32_t queue, | |
6356 | struct ovs_list *replies) | |
6357 | { | |
6358 | struct smap details = SMAP_INITIALIZER(&details); | |
6359 | if (queue != OFPQ_ALL) { | |
6360 | int error = netdev_get_queue(port->netdev, queue, &details); | |
6361 | switch (error) { | |
6362 | case 0: | |
6363 | put_queue_get_config_reply(port, queue, replies); | |
6364 | break; | |
6365 | case EOPNOTSUPP: | |
6366 | case EINVAL: | |
6367 | return OFPERR_OFPQOFC_BAD_QUEUE; | |
6368 | default: | |
6369 | return OFPERR_NXQOFC_QUEUE_ERROR; | |
6370 | } | |
6371 | } else { | |
6372 | struct netdev_queue_dump queue_dump; | |
6373 | uint32_t queue_id; | |
6374 | ||
6375 | NETDEV_QUEUE_FOR_EACH (&queue_id, &details, &queue_dump, | |
6376 | port->netdev) { | |
6377 | put_queue_get_config_reply(port, queue_id, replies); | |
6378 | } | |
6379 | } | |
6380 | smap_destroy(&details); | |
6381 | return 0; | |
56085be5 BP |
6382 | } |
6383 | ||
6384 | static enum ofperr | |
6385 | handle_queue_get_config_request(struct ofconn *ofconn, | |
6386 | const struct ofp_header *oh) | |
6387 | { | |
e016fb63 BP |
6388 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
6389 | struct ovs_list replies; | |
6390 | struct ofport *port; | |
6391 | ofp_port_t req_port; | |
6392 | uint32_t req_queue; | |
6393 | enum ofperr error; | |
6394 | ||
6395 | error = ofputil_decode_queue_get_config_request(oh, &req_port, &req_queue); | |
6396 | if (error) { | |
6397 | return error; | |
6398 | } | |
6399 | ||
6400 | ofputil_start_queue_get_config_reply(oh, &replies); | |
6401 | if (req_port == OFPP_ANY) { | |
6402 | error = OFPERR_OFPQOFC_BAD_QUEUE; | |
6403 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { | |
6404 | if (!handle_queue_get_config_request_for_port(port, req_queue, | |
6405 | &replies)) { | |
6406 | error = 0; | |
6407 | } | |
6408 | } | |
6409 | } else { | |
6410 | port = ofproto_get_port(ofproto, req_port); | |
6411 | error = (port | |
6412 | ? handle_queue_get_config_request_for_port(port, req_queue, | |
6413 | &replies) | |
6414 | : OFPERR_OFPQOFC_BAD_PORT); | |
6415 | } | |
6416 | if (!error) { | |
6417 | ofconn_send_replies(ofconn, &replies); | |
6418 | } else { | |
6419 | ofpbuf_list_delete(&replies); | |
6420 | } | |
6421 | ||
6422 | return error; | |
e8f9a7bb VG |
6423 | } |
6424 | ||
809c7548 | 6425 | static enum ofperr |
63eded98 | 6426 | init_group(struct ofproto *ofproto, const struct ofputil_group_mod *gm, |
5d08a275 | 6427 | ovs_version_t version, struct ofgroup **ofgroup) |
809c7548 RW |
6428 | { |
6429 | enum ofperr error; | |
eaf004bd | 6430 | const long long int now = time_msec(); |
809c7548 RW |
6431 | |
6432 | if (gm->group_id > OFPG_MAX) { | |
6433 | return OFPERR_OFPGMFC_INVALID_GROUP; | |
6434 | } | |
6435 | if (gm->type > OFPGT11_FF) { | |
6436 | return OFPERR_OFPGMFC_BAD_TYPE; | |
6437 | } | |
6438 | ||
6439 | *ofgroup = ofproto->ofproto_class->group_alloc(); | |
6440 | if (!*ofgroup) { | |
6441 | VLOG_WARN_RL(&rl, "%s: failed to allocate group", ofproto->name); | |
6442 | return OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
6443 | } | |
6444 | ||
5d08a275 | 6445 | *CONST_CAST(struct ofproto **, &(*ofgroup)->ofproto) = ofproto; |
eaf004bd AZ |
6446 | *CONST_CAST(uint32_t *, &((*ofgroup)->group_id)) = gm->group_id; |
6447 | *CONST_CAST(enum ofp11_group_type *, &(*ofgroup)->type) = gm->type; | |
6448 | *CONST_CAST(long long int *, &((*ofgroup)->created)) = now; | |
6449 | *CONST_CAST(long long int *, &((*ofgroup)->modified)) = now; | |
809c7548 | 6450 | ovs_refcount_init(&(*ofgroup)->ref_count); |
cc099268 | 6451 | (*ofgroup)->being_deleted = false; |
809c7548 | 6452 | |
db88b35c JR |
6453 | ovs_list_init(CONST_CAST(struct ovs_list *, &(*ofgroup)->buckets)); |
6454 | ofputil_bucket_clone_list(CONST_CAST(struct ovs_list *, | |
6455 | &(*ofgroup)->buckets), | |
6456 | &gm->buckets, NULL); | |
63eded98 | 6457 | |
eaf004bd | 6458 | *CONST_CAST(uint32_t *, &(*ofgroup)->n_buckets) = |
417e7e66 | 6459 | ovs_list_size(&(*ofgroup)->buckets); |
809c7548 | 6460 | |
e8dba719 JR |
6461 | ofputil_group_properties_copy(CONST_CAST(struct ofputil_group_props *, |
6462 | &(*ofgroup)->props), | |
6463 | &gm->props); | |
cc099268 | 6464 | rule_collection_init(&(*ofgroup)->rules); |
bc65c25a | 6465 | |
5d08a275 JR |
6466 | /* Make group visible from 'version'. */ |
6467 | (*ofgroup)->versions = VERSIONS_INITIALIZER(version, | |
6468 | OVS_VERSION_NOT_REMOVED); | |
6469 | ||
809c7548 RW |
6470 | /* Construct called BEFORE any locks are held. */ |
6471 | error = ofproto->ofproto_class->group_construct(*ofgroup); | |
6472 | if (error) { | |
e8dba719 JR |
6473 | ofputil_group_properties_destroy(CONST_CAST(struct ofputil_group_props *, |
6474 | &(*ofgroup)->props)); | |
db88b35c JR |
6475 | ofputil_bucket_list_destroy(CONST_CAST(struct ovs_list *, |
6476 | &(*ofgroup)->buckets)); | |
809c7548 RW |
6477 | ofproto->ofproto_class->group_dealloc(*ofgroup); |
6478 | } | |
6479 | return error; | |
6480 | } | |
6481 | ||
6c5b90ce BP |
6482 | /* Implements the OFPGC11_ADD operation specified by 'gm', adding a group to |
6483 | * 'ofproto''s group table. Returns 0 on success or an OpenFlow error code on | |
6484 | * failure. */ | |
7395c052 | 6485 | static enum ofperr |
2b0b0b80 | 6486 | add_group_start(struct ofproto *ofproto, struct ofproto_group_mod *ogm) |
cc099268 | 6487 | OVS_REQUIRES(ofproto_mutex) |
7395c052 | 6488 | { |
7395c052 NZ |
6489 | enum ofperr error; |
6490 | ||
2b0b0b80 JR |
6491 | if (ofproto_group_exists(ofproto, ogm->gm.group_id)) { |
6492 | return OFPERR_OFPGMFC_GROUP_EXISTS; | |
7395c052 NZ |
6493 | } |
6494 | ||
2b0b0b80 JR |
6495 | if (ofproto->n_groups[ogm->gm.type] |
6496 | >= ofproto->ogf.max_groups[ogm->gm.type]) { | |
6497 | return OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
7395c052 NZ |
6498 | } |
6499 | ||
2b0b0b80 | 6500 | /* Allocate new group and initialize it. */ |
5d08a275 | 6501 | error = init_group(ofproto, &ogm->gm, ogm->version, &ogm->new_group); |
2b0b0b80 JR |
6502 | if (!error) { |
6503 | /* Insert new group. */ | |
6504 | cmap_insert(&ofproto->groups, &ogm->new_group->cmap_node, | |
6505 | hash_int(ogm->new_group->group_id, 0)); | |
6506 | ofproto->n_groups[ogm->new_group->type]++; | |
7395c052 | 6507 | } |
7395c052 NZ |
6508 | return error; |
6509 | } | |
6510 | ||
fce4730c SH |
6511 | /* Adds all of the buckets from 'ofgroup' to 'new_ofgroup'. The buckets |
6512 | * already in 'new_ofgroup' will be placed just after the (copy of the) bucket | |
6513 | * in 'ofgroup' with bucket ID 'command_bucket_id'. Special | |
6514 | * 'command_bucket_id' values OFPG15_BUCKET_FIRST and OFPG15_BUCKET_LAST are | |
6515 | * also honored. */ | |
6516 | static enum ofperr | |
6517 | copy_buckets_for_insert_bucket(const struct ofgroup *ofgroup, | |
6518 | struct ofgroup *new_ofgroup, | |
6519 | uint32_t command_bucket_id) | |
6520 | { | |
6521 | struct ofputil_bucket *last = NULL; | |
6522 | ||
6523 | if (command_bucket_id <= OFPG15_BUCKET_MAX) { | |
6524 | /* Check here to ensure that a bucket corresponding to | |
6525 | * command_bucket_id exists in the old bucket list. | |
6526 | * | |
6527 | * The subsequent search of below of new_ofgroup covers | |
6528 | * both buckets in the old bucket list and buckets added | |
6529 | * by the insert buckets group mod message this function processes. */ | |
6530 | if (!ofputil_bucket_find(&ofgroup->buckets, command_bucket_id)) { | |
6531 | return OFPERR_OFPGMFC_UNKNOWN_BUCKET; | |
6532 | } | |
6533 | ||
417e7e66 | 6534 | if (!ovs_list_is_empty(&new_ofgroup->buckets)) { |
fce4730c SH |
6535 | last = ofputil_bucket_list_back(&new_ofgroup->buckets); |
6536 | } | |
6537 | } | |
6538 | ||
db88b35c JR |
6539 | ofputil_bucket_clone_list(CONST_CAST(struct ovs_list *, |
6540 | &new_ofgroup->buckets), | |
6541 | &ofgroup->buckets, NULL); | |
fce4730c | 6542 | |
23a31238 | 6543 | if (ofputil_bucket_check_duplicate_id(&new_ofgroup->buckets)) { |
d2873d53 | 6544 | VLOG_INFO_RL(&rl, "Duplicate bucket id"); |
fce4730c SH |
6545 | return OFPERR_OFPGMFC_BUCKET_EXISTS; |
6546 | } | |
6547 | ||
6548 | /* Rearrange list according to command_bucket_id */ | |
6549 | if (command_bucket_id == OFPG15_BUCKET_LAST) { | |
417e7e66 | 6550 | if (!ovs_list_is_empty(&ofgroup->buckets)) { |
8e19e655 BP |
6551 | struct ofputil_bucket *new_first; |
6552 | const struct ofputil_bucket *first; | |
fce4730c | 6553 | |
8e19e655 BP |
6554 | first = ofputil_bucket_list_front(&ofgroup->buckets); |
6555 | new_first = ofputil_bucket_find(&new_ofgroup->buckets, | |
6556 | first->bucket_id); | |
fce4730c | 6557 | |
417e7e66 | 6558 | ovs_list_splice(new_ofgroup->buckets.next, &new_first->list_node, |
db88b35c JR |
6559 | CONST_CAST(struct ovs_list *, |
6560 | &new_ofgroup->buckets)); | |
8e19e655 | 6561 | } |
fce4730c SH |
6562 | } else if (command_bucket_id <= OFPG15_BUCKET_MAX && last) { |
6563 | struct ofputil_bucket *after; | |
6564 | ||
6565 | /* Presence of bucket is checked above so after should never be NULL */ | |
6566 | after = ofputil_bucket_find(&new_ofgroup->buckets, command_bucket_id); | |
6567 | ||
417e7e66 | 6568 | ovs_list_splice(after->list_node.next, new_ofgroup->buckets.next, |
fce4730c SH |
6569 | last->list_node.next); |
6570 | } | |
6571 | ||
6572 | return 0; | |
6573 | } | |
6574 | ||
6575 | /* Appends all of the a copy of all the buckets from 'ofgroup' to 'new_ofgroup' | |
6576 | * with the exception of the bucket whose bucket id is 'command_bucket_id'. | |
6577 | * Special 'command_bucket_id' values OFPG15_BUCKET_FIRST, OFPG15_BUCKET_LAST | |
6578 | * and OFPG15_BUCKET_ALL are also honored. */ | |
6579 | static enum ofperr | |
6580 | copy_buckets_for_remove_bucket(const struct ofgroup *ofgroup, | |
6581 | struct ofgroup *new_ofgroup, | |
6582 | uint32_t command_bucket_id) | |
6583 | { | |
6584 | const struct ofputil_bucket *skip = NULL; | |
6585 | ||
6586 | if (command_bucket_id == OFPG15_BUCKET_ALL) { | |
6587 | return 0; | |
6588 | } | |
6589 | ||
6590 | if (command_bucket_id == OFPG15_BUCKET_FIRST) { | |
417e7e66 | 6591 | if (!ovs_list_is_empty(&ofgroup->buckets)) { |
fce4730c SH |
6592 | skip = ofputil_bucket_list_front(&ofgroup->buckets); |
6593 | } | |
6594 | } else if (command_bucket_id == OFPG15_BUCKET_LAST) { | |
417e7e66 | 6595 | if (!ovs_list_is_empty(&ofgroup->buckets)) { |
fce4730c SH |
6596 | skip = ofputil_bucket_list_back(&ofgroup->buckets); |
6597 | } | |
6598 | } else { | |
6599 | skip = ofputil_bucket_find(&ofgroup->buckets, command_bucket_id); | |
6600 | if (!skip) { | |
6601 | return OFPERR_OFPGMFC_UNKNOWN_BUCKET; | |
6602 | } | |
6603 | } | |
6604 | ||
db88b35c JR |
6605 | ofputil_bucket_clone_list(CONST_CAST(struct ovs_list *, |
6606 | &new_ofgroup->buckets), | |
6607 | &ofgroup->buckets, skip); | |
fce4730c SH |
6608 | |
6609 | return 0; | |
6610 | } | |
6611 | ||
6612 | /* Implements OFPGC11_MODIFY, OFPGC15_INSERT_BUCKET and | |
6613 | * OFPGC15_REMOVE_BUCKET. Returns 0 on success or an OpenFlow error code | |
6c5b90ce | 6614 | * on failure. |
7395c052 | 6615 | * |
809c7548 RW |
6616 | * Note that the group is re-created and then replaces the old group in |
6617 | * ofproto's ofgroup hash map. Thus, the group is never altered while users of | |
6c5b90ce | 6618 | * the xlate module hold a pointer to the group. */ |
7395c052 | 6619 | static enum ofperr |
2b0b0b80 | 6620 | modify_group_start(struct ofproto *ofproto, struct ofproto_group_mod *ogm) |
cc099268 | 6621 | OVS_REQUIRES(ofproto_mutex) |
7395c052 | 6622 | { |
2b0b0b80 JR |
6623 | struct ofgroup *old_group; /* Modified group. */ |
6624 | struct ofgroup *new_group; | |
7395c052 NZ |
6625 | enum ofperr error; |
6626 | ||
5d08a275 JR |
6627 | old_group = ofproto_group_lookup__(ofproto, ogm->gm.group_id, |
6628 | OVS_VERSION_MAX); | |
2b0b0b80 JR |
6629 | if (!old_group) { |
6630 | return OFPERR_OFPGMFC_UNKNOWN_GROUP; | |
7395c052 NZ |
6631 | } |
6632 | ||
2b0b0b80 JR |
6633 | if (old_group->type != ogm->gm.type |
6634 | && (ofproto->n_groups[ogm->gm.type] | |
6635 | >= ofproto->ogf.max_groups[ogm->gm.type])) { | |
6636 | return OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
7395c052 | 6637 | } |
809c7548 | 6638 | |
5d08a275 | 6639 | error = init_group(ofproto, &ogm->gm, ogm->version, &ogm->new_group); |
2b0b0b80 JR |
6640 | if (error) { |
6641 | return error; | |
7395c052 | 6642 | } |
2b0b0b80 | 6643 | new_group = ogm->new_group; |
7395c052 | 6644 | |
fce4730c | 6645 | /* Manipulate bucket list for bucket commands */ |
2b0b0b80 JR |
6646 | if (ogm->gm.command == OFPGC15_INSERT_BUCKET) { |
6647 | error = copy_buckets_for_insert_bucket(old_group, new_group, | |
6648 | ogm->gm.command_bucket_id); | |
6649 | } else if (ogm->gm.command == OFPGC15_REMOVE_BUCKET) { | |
6650 | error = copy_buckets_for_remove_bucket(old_group, new_group, | |
6651 | ogm->gm.command_bucket_id); | |
fce4730c SH |
6652 | } |
6653 | if (error) { | |
6654 | goto out; | |
6655 | } | |
6656 | ||
809c7548 | 6657 | /* The group creation time does not change during modification. */ |
2b0b0b80 JR |
6658 | *CONST_CAST(long long int *, &(new_group->created)) = old_group->created; |
6659 | *CONST_CAST(long long int *, &(new_group->modified)) = time_msec(); | |
7395c052 | 6660 | |
2b0b0b80 | 6661 | group_collection_add(&ogm->old_groups, old_group); |
db88b35c | 6662 | |
5d08a275 JR |
6663 | /* Mark the old group for deletion. */ |
6664 | versions_set_remove_version(&old_group->versions, ogm->version); | |
6665 | /* Insert replacement group. */ | |
6666 | cmap_insert(&ofproto->groups, &new_group->cmap_node, | |
6667 | hash_int(new_group->group_id, 0)); | |
cc099268 | 6668 | /* Transfer rules. */ |
2b0b0b80 | 6669 | rule_collection_move(&new_group->rules, &old_group->rules); |
db88b35c | 6670 | |
2b0b0b80 JR |
6671 | if (old_group->type != new_group->type) { |
6672 | ofproto->n_groups[old_group->type]--; | |
6673 | ofproto->n_groups[new_group->type]++; | |
7395c052 | 6674 | } |
2b0b0b80 | 6675 | return 0; |
7395c052 | 6676 | |
809c7548 | 6677 | out: |
2b0b0b80 | 6678 | ofproto_group_unref(new_group); |
7395c052 NZ |
6679 | return error; |
6680 | } | |
6681 | ||
88b87a36 JS |
6682 | /* Implements the OFPGC11_ADD_OR_MOD command which creates the group when it does not |
6683 | * exist yet and modifies it otherwise */ | |
6684 | static enum ofperr | |
2b0b0b80 JR |
6685 | add_or_modify_group_start(struct ofproto *ofproto, |
6686 | struct ofproto_group_mod *ogm) | |
cc099268 | 6687 | OVS_REQUIRES(ofproto_mutex) |
88b87a36 | 6688 | { |
88b87a36 | 6689 | enum ofperr error; |
88b87a36 | 6690 | |
2b0b0b80 JR |
6691 | if (!ofproto_group_exists(ofproto, ogm->gm.group_id)) { |
6692 | error = add_group_start(ofproto, ogm); | |
88b87a36 | 6693 | } else { |
2b0b0b80 | 6694 | error = modify_group_start(ofproto, ogm); |
88b87a36 | 6695 | } |
cc099268 | 6696 | |
88b87a36 JS |
6697 | return error; |
6698 | } | |
6699 | ||
7395c052 | 6700 | static void |
5d08a275 JR |
6701 | delete_group_start(struct ofproto *ofproto, ovs_version_t version, |
6702 | struct group_collection *groups, struct ofgroup *group) | |
cc099268 | 6703 | OVS_REQUIRES(ofproto_mutex) |
7395c052 | 6704 | { |
2b0b0b80 | 6705 | /* Makes flow deletion code leave the rule pointers in 'group->rules' |
cc099268 JR |
6706 | * intact, so that we can later refer to the rules deleted due to the group |
6707 | * deletion. Rule pointers will be removed from all other groups, if any, | |
6708 | * so we will never try to delete the same rule twice. */ | |
2b0b0b80 JR |
6709 | group->being_deleted = true; |
6710 | ||
6711 | /* Mark all the referring groups for deletion. */ | |
5d08a275 | 6712 | delete_flows_start__(ofproto, version, &group->rules); |
2b0b0b80 | 6713 | group_collection_add(groups, group); |
5d08a275 | 6714 | versions_set_remove_version(&group->versions, version); |
2b0b0b80 JR |
6715 | ofproto->n_groups[group->type]--; |
6716 | } | |
276f6518 | 6717 | |
2b0b0b80 JR |
6718 | static void |
6719 | delete_group_finish(struct ofproto *ofproto, struct ofgroup *group) | |
6720 | OVS_REQUIRES(ofproto_mutex) | |
6721 | { | |
6722 | /* Finish deletion of all flow entries containing this group in a group | |
6723 | * action. */ | |
6724 | delete_flows_finish__(ofproto, &group->rules, OFPRR_GROUP_DELETE, NULL); | |
276f6518 | 6725 | |
5d08a275 | 6726 | /* Group removal is postponed by the caller. */ |
7395c052 NZ |
6727 | } |
6728 | ||
6c5b90ce | 6729 | /* Implements OFPGC11_DELETE. */ |
7395c052 | 6730 | static void |
2b0b0b80 | 6731 | delete_groups_start(struct ofproto *ofproto, struct ofproto_group_mod *ogm) |
cc099268 | 6732 | OVS_REQUIRES(ofproto_mutex) |
7395c052 | 6733 | { |
2b0b0b80 | 6734 | struct ofgroup *group; |
7395c052 | 6735 | |
2b0b0b80 JR |
6736 | if (ogm->gm.group_id == OFPG_ALL) { |
6737 | CMAP_FOR_EACH (group, cmap_node, &ofproto->groups) { | |
5d08a275 JR |
6738 | if (versions_visible_in_version(&group->versions, ogm->version)) { |
6739 | delete_group_start(ofproto, ogm->version, &ogm->old_groups, | |
6740 | group); | |
6741 | } | |
7395c052 NZ |
6742 | } |
6743 | } else { | |
5d08a275 JR |
6744 | group = ofproto_group_lookup__(ofproto, ogm->gm.group_id, ogm->version); |
6745 | if (group) { | |
6746 | delete_group_start(ofproto, ogm->version, &ogm->old_groups, group); | |
7395c052 NZ |
6747 | } |
6748 | } | |
7395c052 NZ |
6749 | } |
6750 | ||
6751 | static enum ofperr | |
2b0b0b80 JR |
6752 | ofproto_group_mod_start(struct ofproto *ofproto, struct ofproto_group_mod *ogm) |
6753 | OVS_REQUIRES(ofproto_mutex) | |
7395c052 | 6754 | { |
7395c052 NZ |
6755 | enum ofperr error; |
6756 | ||
2b0b0b80 JR |
6757 | ogm->new_group = NULL; |
6758 | group_collection_init(&ogm->old_groups); | |
7395c052 | 6759 | |
2b0b0b80 | 6760 | switch (ogm->gm.command) { |
7395c052 | 6761 | case OFPGC11_ADD: |
2b0b0b80 | 6762 | error = add_group_start(ofproto, ogm); |
3c35db62 | 6763 | break; |
7395c052 NZ |
6764 | |
6765 | case OFPGC11_MODIFY: | |
2b0b0b80 | 6766 | error = modify_group_start(ofproto, ogm); |
3c35db62 | 6767 | break; |
7395c052 | 6768 | |
88b87a36 | 6769 | case OFPGC11_ADD_OR_MOD: |
2b0b0b80 | 6770 | error = add_or_modify_group_start(ofproto, ogm); |
88b87a36 JS |
6771 | break; |
6772 | ||
7395c052 | 6773 | case OFPGC11_DELETE: |
2b0b0b80 | 6774 | delete_groups_start(ofproto, ogm); |
3c35db62 NR |
6775 | error = 0; |
6776 | break; | |
7395c052 | 6777 | |
fce4730c | 6778 | case OFPGC15_INSERT_BUCKET: |
2b0b0b80 | 6779 | error = modify_group_start(ofproto, ogm); |
3c35db62 | 6780 | break; |
fce4730c SH |
6781 | |
6782 | case OFPGC15_REMOVE_BUCKET: | |
2b0b0b80 | 6783 | error = modify_group_start(ofproto, ogm); |
3c35db62 | 6784 | break; |
fce4730c | 6785 | |
7395c052 | 6786 | default: |
2b0b0b80 | 6787 | if (ogm->gm.command > OFPGC11_DELETE) { |
d2873d53 | 6788 | VLOG_INFO_RL(&rl, "%s: Invalid group_mod command type %d", |
2b0b0b80 | 6789 | ofproto->name, ogm->gm.command); |
7395c052 | 6790 | } |
63eded98 | 6791 | error = OFPERR_OFPGMFC_BAD_COMMAND; |
2b0b0b80 | 6792 | break; |
7395c052 | 6793 | } |
2b0b0b80 JR |
6794 | return error; |
6795 | } | |
3c35db62 | 6796 | |
25070e04 JR |
6797 | static void |
6798 | ofproto_group_mod_revert(struct ofproto *ofproto, | |
6799 | struct ofproto_group_mod *ogm) | |
6800 | OVS_REQUIRES(ofproto_mutex) | |
6801 | { | |
6802 | struct ofgroup *new_group = ogm->new_group; | |
6803 | struct ofgroup *old_group; | |
6804 | ||
6805 | /* Restore replaced or deleted groups. */ | |
6806 | GROUP_COLLECTION_FOR_EACH (old_group, &ogm->old_groups) { | |
6807 | ofproto->n_groups[old_group->type]++; | |
6808 | if (new_group) { | |
6809 | ovs_assert(group_collection_n(&ogm->old_groups) == 1); | |
6810 | /* Transfer rules back. */ | |
6811 | rule_collection_move(&old_group->rules, &new_group->rules); | |
6812 | } else { | |
6813 | old_group->being_deleted = false; | |
6814 | /* Revert rule deletion. */ | |
6815 | delete_flows_revert__(ofproto, &old_group->rules); | |
6816 | } | |
6817 | /* Restore visibility. */ | |
6818 | versions_set_remove_version(&old_group->versions, | |
6819 | OVS_VERSION_NOT_REMOVED); | |
6820 | } | |
6821 | if (new_group) { | |
6822 | /* Remove the new group immediately. It was never visible to | |
6823 | * lookups. */ | |
6824 | cmap_remove(&ofproto->groups, &new_group->cmap_node, | |
6825 | hash_int(new_group->group_id, 0)); | |
6826 | ofproto->n_groups[new_group->type]--; | |
6827 | ofproto_group_unref(new_group); | |
6828 | } | |
6829 | } | |
6830 | ||
2b0b0b80 JR |
6831 | static void |
6832 | ofproto_group_mod_finish(struct ofproto *ofproto, | |
6833 | struct ofproto_group_mod *ogm, | |
6834 | const struct openflow_mod_requester *req) | |
6835 | OVS_REQUIRES(ofproto_mutex) | |
6836 | { | |
6837 | struct ofgroup *new_group = ogm->new_group; | |
6838 | struct ofgroup *old_group; | |
6839 | ||
5d08a275 | 6840 | if (new_group && group_collection_n(&ogm->old_groups)) { |
2b0b0b80 JR |
6841 | /* Modify a group. */ |
6842 | ovs_assert(group_collection_n(&ogm->old_groups) == 1); | |
2b0b0b80 JR |
6843 | |
6844 | /* XXX: OK to lose old group's stats? */ | |
6845 | ofproto->ofproto_class->group_modify(new_group); | |
5d08a275 | 6846 | } |
2b0b0b80 | 6847 | |
5d08a275 JR |
6848 | /* Delete old groups. */ |
6849 | GROUP_COLLECTION_FOR_EACH(old_group, &ogm->old_groups) { | |
6850 | delete_group_finish(ofproto, old_group); | |
2b0b0b80 | 6851 | } |
5d08a275 | 6852 | remove_groups_postponed(&ogm->old_groups); |
2b0b0b80 JR |
6853 | |
6854 | if (req) { | |
3c35db62 | 6855 | struct ofputil_requestforward rf; |
2b0b0b80 | 6856 | rf.xid = req->request->xid; |
3c35db62 | 6857 | rf.reason = OFPRFR_GROUP_MOD; |
2b0b0b80 JR |
6858 | rf.group_mod = &ogm->gm; |
6859 | connmgr_send_requestforward(ofproto->connmgr, req->ofconn, &rf); | |
6860 | } | |
6861 | } | |
6862 | ||
6863 | /* Delete all groups from 'ofproto'. | |
6864 | * | |
6865 | * This is intended for use within an ofproto provider's 'destruct' | |
6866 | * function. */ | |
6867 | void | |
6868 | ofproto_group_delete_all(struct ofproto *ofproto) | |
6869 | OVS_EXCLUDED(ofproto_mutex) | |
6870 | { | |
6871 | struct ofproto_group_mod ogm; | |
6872 | ||
6873 | ogm.gm.command = OFPGC11_DELETE; | |
6874 | ogm.gm.group_id = OFPG_ALL; | |
6875 | ||
6876 | ovs_mutex_lock(&ofproto_mutex); | |
5d08a275 | 6877 | ogm.version = ofproto->tables_version + 1; |
2b0b0b80 | 6878 | ofproto_group_mod_start(ofproto, &ogm); |
5d08a275 | 6879 | ofproto_bump_tables_version(ofproto); |
2b0b0b80 JR |
6880 | ofproto_group_mod_finish(ofproto, &ogm, NULL); |
6881 | ovs_mutex_unlock(&ofproto_mutex); | |
6882 | } | |
6883 | ||
6884 | static enum ofperr | |
6885 | handle_group_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
6886 | OVS_EXCLUDED(ofproto_mutex) | |
6887 | { | |
6888 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
6889 | struct ofproto_group_mod ogm; | |
6890 | enum ofperr error; | |
6891 | ||
6892 | error = reject_slave_controller(ofconn); | |
6893 | if (error) { | |
6894 | return error; | |
6895 | } | |
6896 | ||
6897 | error = ofputil_decode_group_mod(oh, &ogm.gm); | |
6898 | if (error) { | |
6899 | return error; | |
3c35db62 | 6900 | } |
2b0b0b80 JR |
6901 | |
6902 | ovs_mutex_lock(&ofproto_mutex); | |
5d08a275 | 6903 | ogm.version = ofproto->tables_version + 1; |
2b0b0b80 JR |
6904 | error = ofproto_group_mod_start(ofproto, &ogm); |
6905 | if (!error) { | |
6906 | struct openflow_mod_requester req = { ofconn, oh }; | |
5d08a275 JR |
6907 | |
6908 | ofproto_bump_tables_version(ofproto); | |
2b0b0b80 JR |
6909 | ofproto_group_mod_finish(ofproto, &ogm, &req); |
6910 | } | |
6911 | ofmonitor_flush(ofproto->connmgr); | |
6912 | ovs_mutex_unlock(&ofproto_mutex); | |
6913 | ||
75868d0e | 6914 | ofputil_uninit_group_mod(&ogm.gm); |
63eded98 | 6915 | |
3c35db62 | 6916 | return error; |
7395c052 NZ |
6917 | } |
6918 | ||
3c1bb396 BP |
6919 | enum ofputil_table_miss |
6920 | ofproto_table_get_miss_config(const struct ofproto *ofproto, uint8_t table_id) | |
6d328fa2 | 6921 | { |
82c22d34 BP |
6922 | enum ofputil_table_miss miss; |
6923 | ||
6924 | atomic_read_relaxed(&ofproto->tables[table_id].miss_config, &miss); | |
6925 | return miss; | |
6926 | } | |
6927 | ||
6928 | static void | |
6929 | table_mod__(struct oftable *oftable, | |
de7d3c07 | 6930 | const struct ofputil_table_mod *tm) |
82c22d34 | 6931 | { |
de7d3c07 | 6932 | if (tm->miss == OFPUTIL_TABLE_MISS_DEFAULT) { |
82c22d34 BP |
6933 | /* This is how an OFPT_TABLE_MOD decodes if it doesn't specify any |
6934 | * table-miss configuration (because the protocol used doesn't have | |
6935 | * such a concept), so there's nothing to do. */ | |
6936 | } else { | |
de7d3c07 | 6937 | atomic_store_relaxed(&oftable->miss_config, tm->miss); |
82c22d34 BP |
6938 | } |
6939 | ||
6940 | unsigned int new_eviction = oftable->eviction; | |
de7d3c07 | 6941 | if (tm->eviction == OFPUTIL_TABLE_EVICTION_ON) { |
82c22d34 | 6942 | new_eviction |= EVICTION_OPENFLOW; |
de7d3c07 | 6943 | } else if (tm->eviction == OFPUTIL_TABLE_EVICTION_OFF) { |
82c22d34 BP |
6944 | new_eviction &= ~EVICTION_OPENFLOW; |
6945 | } | |
afcea9ea | 6946 | |
82c22d34 BP |
6947 | if (new_eviction != oftable->eviction) { |
6948 | ovs_mutex_lock(&ofproto_mutex); | |
6949 | oftable_configure_eviction(oftable, new_eviction, | |
6950 | oftable->eviction_fields, | |
6951 | oftable->n_eviction_fields); | |
6952 | ovs_mutex_unlock(&ofproto_mutex); | |
6953 | } | |
de7d3c07 SJ |
6954 | |
6955 | if (tm->vacancy != OFPUTIL_TABLE_VACANCY_DEFAULT) { | |
6956 | ovs_mutex_lock(&ofproto_mutex); | |
de7d3c07 SJ |
6957 | oftable->vacancy_down = tm->table_vacancy.vacancy_down; |
6958 | oftable->vacancy_up = tm->table_vacancy.vacancy_up; | |
6c6eedc5 SJ |
6959 | if (tm->vacancy == OFPUTIL_TABLE_VACANCY_OFF) { |
6960 | oftable->vacancy_event = 0; | |
6961 | } else if (!oftable->vacancy_event) { | |
6962 | uint8_t vacancy = oftable_vacancy(oftable); | |
6963 | oftable->vacancy_event = (vacancy < oftable->vacancy_up | |
6964 | ? OFPTR_VACANCY_UP | |
6965 | : OFPTR_VACANCY_DOWN); | |
6966 | } | |
de7d3c07 SJ |
6967 | ovs_mutex_unlock(&ofproto_mutex); |
6968 | } | |
6d328fa2 SH |
6969 | } |
6970 | ||
67761761 SH |
6971 | static enum ofperr |
6972 | table_mod(struct ofproto *ofproto, const struct ofputil_table_mod *tm) | |
6973 | { | |
3c1bb396 | 6974 | if (!check_table_id(ofproto, tm->table_id)) { |
67761761 | 6975 | return OFPERR_OFPTMFC_BAD_TABLE; |
82c22d34 BP |
6976 | } |
6977 | ||
6978 | /* Don't allow the eviction flags to be changed (except to the only fixed | |
6979 | * value that OVS supports). OF1.4 says this is normal: "The | |
6980 | * OFPTMPT_EVICTION property usually cannot be modified using a | |
6981 | * OFP_TABLE_MOD request, because the eviction mechanism is switch | |
6982 | * defined". */ | |
6983 | if (tm->eviction_flags != UINT32_MAX | |
6984 | && tm->eviction_flags != OFPROTO_EVICTION_FLAGS) { | |
6985 | return OFPERR_OFPTMFC_BAD_CONFIG; | |
6986 | } | |
6987 | ||
6988 | if (tm->table_id == OFPTT_ALL) { | |
6989 | struct oftable *oftable; | |
6990 | OFPROTO_FOR_EACH_TABLE (oftable, ofproto) { | |
6991 | if (!(oftable->flags & (OFTABLE_HIDDEN | OFTABLE_READONLY))) { | |
de7d3c07 | 6992 | table_mod__(oftable, tm); |
3c1bb396 | 6993 | } |
3c1bb396 | 6994 | } |
82c22d34 BP |
6995 | } else { |
6996 | struct oftable *oftable = &ofproto->tables[tm->table_id]; | |
6997 | if (oftable->flags & OFTABLE_READONLY) { | |
6998 | return OFPERR_OFPTMFC_EPERM; | |
6999 | } | |
de7d3c07 | 7000 | table_mod__(oftable, tm); |
67761761 | 7001 | } |
82c22d34 | 7002 | |
67761761 SH |
7003 | return 0; |
7004 | } | |
7005 | ||
918f2b82 AZ |
7006 | static enum ofperr |
7007 | handle_table_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
7008 | { | |
67761761 | 7009 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
918f2b82 AZ |
7010 | struct ofputil_table_mod tm; |
7011 | enum ofperr error; | |
7012 | ||
7013 | error = reject_slave_controller(ofconn); | |
7014 | if (error) { | |
7015 | return error; | |
7016 | } | |
7017 | ||
7018 | error = ofputil_decode_table_mod(oh, &tm); | |
7019 | if (error) { | |
7020 | return error; | |
7021 | } | |
7022 | ||
67761761 | 7023 | return table_mod(ofproto, &tm); |
918f2b82 AZ |
7024 | } |
7025 | ||
777af88d | 7026 | static enum ofperr |
8be00367 | 7027 | ofproto_flow_mod_start(struct ofproto *ofproto, struct ofproto_flow_mod *ofm) |
1f42be1c | 7028 | OVS_REQUIRES(ofproto_mutex) |
777af88d | 7029 | { |
cc099268 JR |
7030 | /* Must check actions while holding ofproto_mutex to avoid a race. */ |
7031 | enum ofperr error = ofproto_check_ofpacts(ofproto, ofm->fm.ofpacts, | |
7032 | ofm->fm.ofpacts_len); | |
7033 | if (error) { | |
7034 | return error; | |
7035 | } | |
7036 | ||
8be00367 | 7037 | switch (ofm->fm.command) { |
1f42be1c | 7038 | case OFPFC_ADD: |
8be00367 JR |
7039 | return add_flow_start(ofproto, ofm); |
7040 | /* , &be->old_rules.stub[0], | |
7041 | &be->new_rules.stub[0]); */ | |
1f42be1c | 7042 | case OFPFC_MODIFY: |
8be00367 | 7043 | return modify_flows_start_loose(ofproto, ofm); |
1f42be1c | 7044 | case OFPFC_MODIFY_STRICT: |
8be00367 | 7045 | return modify_flow_start_strict(ofproto, ofm); |
1f42be1c | 7046 | case OFPFC_DELETE: |
8be00367 | 7047 | return delete_flows_start_loose(ofproto, ofm); |
1f42be1c JR |
7048 | |
7049 | case OFPFC_DELETE_STRICT: | |
8be00367 | 7050 | return delete_flow_start_strict(ofproto, ofm); |
1f42be1c JR |
7051 | } |
7052 | ||
7053 | return OFPERR_OFPFMFC_BAD_COMMAND; | |
7054 | } | |
7055 | ||
7056 | static void | |
8be00367 | 7057 | ofproto_flow_mod_revert(struct ofproto *ofproto, struct ofproto_flow_mod *ofm) |
1f42be1c JR |
7058 | OVS_REQUIRES(ofproto_mutex) |
7059 | { | |
8be00367 | 7060 | switch (ofm->fm.command) { |
1f42be1c | 7061 | case OFPFC_ADD: |
8be00367 | 7062 | add_flow_revert(ofproto, ofm); |
1f42be1c JR |
7063 | break; |
7064 | ||
7065 | case OFPFC_MODIFY: | |
7066 | case OFPFC_MODIFY_STRICT: | |
8be00367 | 7067 | modify_flows_revert(ofproto, ofm); |
1f42be1c JR |
7068 | break; |
7069 | ||
7070 | case OFPFC_DELETE: | |
7071 | case OFPFC_DELETE_STRICT: | |
8be00367 | 7072 | delete_flows_revert(ofproto, ofm); |
1f42be1c JR |
7073 | break; |
7074 | ||
7075 | default: | |
7076 | break; | |
7077 | } | |
7078 | } | |
7079 | ||
7080 | static void | |
8be00367 JR |
7081 | ofproto_flow_mod_finish(struct ofproto *ofproto, |
7082 | struct ofproto_flow_mod *ofm, | |
0a0d9385 | 7083 | const struct openflow_mod_requester *req) |
1f42be1c JR |
7084 | OVS_REQUIRES(ofproto_mutex) |
7085 | { | |
8be00367 | 7086 | switch (ofm->fm.command) { |
1f42be1c | 7087 | case OFPFC_ADD: |
8be00367 | 7088 | add_flow_finish(ofproto, ofm, req); |
1f42be1c JR |
7089 | break; |
7090 | ||
7091 | case OFPFC_MODIFY: | |
7092 | case OFPFC_MODIFY_STRICT: | |
8be00367 | 7093 | modify_flows_finish(ofproto, ofm, req); |
1f42be1c JR |
7094 | break; |
7095 | ||
7096 | case OFPFC_DELETE: | |
7097 | case OFPFC_DELETE_STRICT: | |
8be00367 | 7098 | delete_flows_finish(ofproto, ofm, req); |
1f42be1c JR |
7099 | break; |
7100 | ||
7101 | default: | |
7102 | break; | |
7103 | } | |
b0d38b2f JR |
7104 | |
7105 | if (req) { | |
7106 | ofconn_report_flow_mod(req->ofconn, ofm->fm.command); | |
7107 | } | |
1f42be1c JR |
7108 | } |
7109 | ||
39c94593 JR |
7110 | /* Commit phases (all while locking ofproto_mutex): |
7111 | * | |
7112 | * 1. Begin: Gather resources and make changes visible in the next version. | |
7113 | * - Mark affected rules for removal in the next version. | |
7114 | * - Create new replacement rules, make visible in the next | |
7115 | * version. | |
7116 | * - Do not send any events or notifications. | |
7117 | * | |
7118 | * 2. Revert: Fail if any errors are found. After this point no errors are | |
7119 | * possible. No visible changes were made, so rollback is minimal (remove | |
7120 | * added invisible rules, restore visibility of rules marked for removal). | |
7121 | * | |
1c38055d JR |
7122 | * 3. Finish: Make the changes visible for lookups. Insert replacement rules to |
7123 | * the ofproto provider. Remove replaced and deleted rules from ofproto data | |
7124 | * structures, and Schedule postponed removal of deleted rules from the | |
7125 | * classifier. Send notifications, buffered packets, etc. | |
39c94593 | 7126 | */ |
1f42be1c JR |
7127 | static enum ofperr |
7128 | do_bundle_commit(struct ofconn *ofconn, uint32_t id, uint16_t flags) | |
7129 | { | |
7130 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
44e0c35d | 7131 | ovs_version_t version = ofproto->tables_version + 1; |
1f42be1c JR |
7132 | struct ofp_bundle *bundle; |
7133 | struct ofp_bundle_entry *be; | |
777af88d | 7134 | enum ofperr error; |
1f42be1c JR |
7135 | |
7136 | bundle = ofconn_get_bundle(ofconn, id); | |
7137 | ||
7138 | if (!bundle) { | |
7139 | return OFPERR_OFPBFC_BAD_ID; | |
7140 | } | |
7141 | if (bundle->flags != flags) { | |
7142 | error = OFPERR_OFPBFC_BAD_FLAGS; | |
7143 | } else { | |
1c38055d JR |
7144 | bool prev_is_port_mod = false; |
7145 | ||
1f42be1c JR |
7146 | error = 0; |
7147 | ovs_mutex_lock(&ofproto_mutex); | |
39c94593 JR |
7148 | |
7149 | /* 1. Begin. */ | |
1f42be1c JR |
7150 | LIST_FOR_EACH (be, node, &bundle->msg_list) { |
7151 | if (be->type == OFPTYPE_PORT_MOD) { | |
1c38055d JR |
7152 | /* Our port mods are not atomic. */ |
7153 | if (flags & OFPBF_ATOMIC) { | |
7154 | error = OFPERR_OFPBFC_MSG_FAILED; | |
7155 | } else { | |
7156 | prev_is_port_mod = true; | |
8be00367 | 7157 | error = port_mod_start(ofconn, &be->opm.pm, &be->opm.port); |
1c38055d | 7158 | } |
25070e04 JR |
7159 | } else { |
7160 | /* Flow & group mods between port mods are applied as a single | |
7161 | * version, but the versions are published only after we know | |
7162 | * the commit is successful. */ | |
1c38055d | 7163 | if (prev_is_port_mod) { |
25070e04 | 7164 | prev_is_port_mod = false; |
8be00367 | 7165 | ++version; |
1c38055d | 7166 | } |
25070e04 JR |
7167 | if (be->type == OFPTYPE_FLOW_MOD) { |
7168 | /* Store the version in which the changes should take | |
7169 | * effect. */ | |
7170 | be->ofm.version = version; | |
7171 | error = ofproto_flow_mod_start(ofproto, &be->ofm); | |
7172 | } else if (be->type == OFPTYPE_GROUP_MOD) { | |
7173 | /* Store the version in which the changes should take | |
7174 | * effect. */ | |
7175 | be->ogm.version = version; | |
7176 | error = ofproto_group_mod_start(ofproto, &be->ogm); | |
7177 | } else { | |
7178 | OVS_NOT_REACHED(); | |
7179 | } | |
1f42be1c JR |
7180 | } |
7181 | if (error) { | |
7182 | break; | |
7183 | } | |
7184 | } | |
1c38055d | 7185 | |
1f42be1c JR |
7186 | if (error) { |
7187 | /* Send error referring to the original message. */ | |
7188 | if (error) { | |
7189 | ofconn_send_error(ofconn, be->ofp_msg, error); | |
7190 | error = OFPERR_OFPBFC_MSG_FAILED; | |
7191 | } | |
7192 | ||
39c94593 | 7193 | /* 2. Revert. Undo all the changes made above. */ |
1f42be1c JR |
7194 | LIST_FOR_EACH_REVERSE_CONTINUE(be, node, &bundle->msg_list) { |
7195 | if (be->type == OFPTYPE_FLOW_MOD) { | |
8be00367 | 7196 | ofproto_flow_mod_revert(ofproto, &be->ofm); |
25070e04 JR |
7197 | } else if (be->type == OFPTYPE_GROUP_MOD) { |
7198 | ofproto_group_mod_revert(ofproto, &be->ogm); | |
1f42be1c | 7199 | } |
25070e04 | 7200 | |
1c38055d | 7201 | /* Nothing needs to be reverted for a port mod. */ |
1f42be1c JR |
7202 | } |
7203 | } else { | |
39c94593 | 7204 | /* 4. Finish. */ |
1f42be1c | 7205 | LIST_FOR_EACH (be, node, &bundle->msg_list) { |
25070e04 | 7206 | if (be->type == OFPTYPE_PORT_MOD) { |
1c38055d JR |
7207 | /* Perform the actual port mod. This is not atomic, i.e., |
7208 | * the effects will be immediately seen by upcall | |
7209 | * processing regardless of the lookup version. It should | |
7210 | * be noted that port configuration changes can originate | |
7211 | * also from OVSDB changes asynchronously to all upcall | |
7212 | * processing. */ | |
8be00367 | 7213 | port_mod_finish(ofconn, &be->opm.pm, be->opm.port); |
25070e04 JR |
7214 | } else { |
7215 | struct openflow_mod_requester req = { ofconn, | |
7216 | be->ofp_msg }; | |
7217 | if (be->type == OFPTYPE_FLOW_MOD) { | |
7218 | /* Bump the lookup version to the one of the current | |
7219 | * message. This makes all the changes in the bundle | |
7220 | * at this version visible to lookups at once. */ | |
7221 | if (ofproto->tables_version < be->ofm.version) { | |
7222 | ofproto->tables_version = be->ofm.version; | |
7223 | ofproto->ofproto_class->set_tables_version( | |
7224 | ofproto, ofproto->tables_version); | |
7225 | } | |
7226 | ||
7227 | ofproto_flow_mod_finish(ofproto, &be->ofm, &req); | |
7228 | } else if (be->type == OFPTYPE_GROUP_MOD) { | |
7229 | /* Bump the lookup version to the one of the current | |
7230 | * message. This makes all the changes in the bundle | |
7231 | * at this version visible to lookups at once. */ | |
7232 | if (ofproto->tables_version < be->ogm.version) { | |
7233 | ofproto->tables_version = be->ogm.version; | |
7234 | ofproto->ofproto_class->set_tables_version( | |
7235 | ofproto, ofproto->tables_version); | |
7236 | } | |
7237 | ||
7238 | ofproto_group_mod_finish(ofproto, &be->ogm, &req); | |
7239 | } | |
1f42be1c JR |
7240 | } |
7241 | } | |
7242 | } | |
1c38055d | 7243 | |
1f42be1c JR |
7244 | ofmonitor_flush(ofproto->connmgr); |
7245 | ovs_mutex_unlock(&ofproto_mutex); | |
7246 | ||
7247 | run_rule_executes(ofproto); | |
7248 | } | |
7249 | ||
7250 | /* The bundle is discarded regardless the outcome. */ | |
7251 | ofp_bundle_remove__(ofconn, bundle, !error); | |
7252 | return error; | |
7253 | } | |
7254 | ||
7255 | static enum ofperr | |
7256 | handle_bundle_control(struct ofconn *ofconn, const struct ofp_header *oh) | |
7257 | { | |
777af88d | 7258 | struct ofputil_bundle_ctrl_msg bctrl; |
777af88d | 7259 | struct ofputil_bundle_ctrl_msg reply; |
1f42be1c JR |
7260 | struct ofpbuf *buf; |
7261 | enum ofperr error; | |
777af88d | 7262 | |
ba9d374a JR |
7263 | error = reject_slave_controller(ofconn); |
7264 | if (error) { | |
7265 | return error; | |
7266 | } | |
7267 | ||
777af88d AC |
7268 | error = ofputil_decode_bundle_ctrl(oh, &bctrl); |
7269 | if (error) { | |
7270 | return error; | |
7271 | } | |
7272 | reply.flags = 0; | |
7273 | reply.bundle_id = bctrl.bundle_id; | |
7274 | ||
7275 | switch (bctrl.type) { | |
7276 | case OFPBCT_OPEN_REQUEST: | |
7277 | error = ofp_bundle_open(ofconn, bctrl.bundle_id, bctrl.flags); | |
7278 | reply.type = OFPBCT_OPEN_REPLY; | |
7279 | break; | |
7280 | case OFPBCT_CLOSE_REQUEST: | |
7281 | error = ofp_bundle_close(ofconn, bctrl.bundle_id, bctrl.flags); | |
ea53e3a8 | 7282 | reply.type = OFPBCT_CLOSE_REPLY; |
777af88d AC |
7283 | break; |
7284 | case OFPBCT_COMMIT_REQUEST: | |
1f42be1c | 7285 | error = do_bundle_commit(ofconn, bctrl.bundle_id, bctrl.flags); |
777af88d AC |
7286 | reply.type = OFPBCT_COMMIT_REPLY; |
7287 | break; | |
7288 | case OFPBCT_DISCARD_REQUEST: | |
7289 | error = ofp_bundle_discard(ofconn, bctrl.bundle_id); | |
7290 | reply.type = OFPBCT_DISCARD_REPLY; | |
7291 | break; | |
7292 | ||
7293 | case OFPBCT_OPEN_REPLY: | |
7294 | case OFPBCT_CLOSE_REPLY: | |
7295 | case OFPBCT_COMMIT_REPLY: | |
7296 | case OFPBCT_DISCARD_REPLY: | |
7297 | return OFPERR_OFPBFC_BAD_TYPE; | |
7298 | break; | |
7299 | } | |
7300 | ||
7301 | if (!error) { | |
7302 | buf = ofputil_encode_bundle_ctrl_reply(oh, &reply); | |
7303 | ofconn_send_reply(ofconn, buf); | |
7304 | } | |
7305 | return error; | |
7306 | } | |
7307 | ||
777af88d AC |
7308 | static enum ofperr |
7309 | handle_bundle_add(struct ofconn *ofconn, const struct ofp_header *oh) | |
7310 | { | |
7ac27a04 | 7311 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
777af88d AC |
7312 | enum ofperr error; |
7313 | struct ofputil_bundle_add_msg badd; | |
7ac27a04 JR |
7314 | struct ofp_bundle_entry *bmsg; |
7315 | enum ofptype type; | |
777af88d | 7316 | |
ba9d374a JR |
7317 | error = reject_slave_controller(ofconn); |
7318 | if (error) { | |
7319 | return error; | |
7320 | } | |
7321 | ||
7ac27a04 | 7322 | error = ofputil_decode_bundle_add(oh, &badd, &type); |
777af88d AC |
7323 | if (error) { |
7324 | return error; | |
7325 | } | |
7326 | ||
1f42be1c | 7327 | bmsg = ofp_bundle_entry_alloc(type, badd.msg); |
7ac27a04 JR |
7328 | |
7329 | if (type == OFPTYPE_PORT_MOD) { | |
8be00367 | 7330 | error = ofputil_decode_port_mod(badd.msg, &bmsg->opm.pm, false); |
7ac27a04 JR |
7331 | } else if (type == OFPTYPE_FLOW_MOD) { |
7332 | struct ofpbuf ofpacts; | |
7333 | uint64_t ofpacts_stub[1024 / 8]; | |
7334 | ||
7335 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); | |
8be00367 | 7336 | error = ofputil_decode_flow_mod(&bmsg->ofm.fm, badd.msg, |
7ac27a04 JR |
7337 | ofconn_get_protocol(ofconn), |
7338 | &ofpacts, | |
7339 | u16_to_ofp(ofproto->max_ports), | |
7340 | ofproto->n_tables); | |
7341 | /* Move actions to heap. */ | |
8be00367 | 7342 | bmsg->ofm.fm.ofpacts = ofpbuf_steal_data(&ofpacts); |
25070e04 JR |
7343 | } else if (type == OFPTYPE_GROUP_MOD) { |
7344 | error = ofputil_decode_group_mod(badd.msg, &bmsg->ogm.gm); | |
7ac27a04 JR |
7345 | } else { |
7346 | OVS_NOT_REACHED(); | |
7347 | } | |
7348 | ||
7349 | if (!error) { | |
7350 | error = ofp_bundle_add_message(ofconn, badd.bundle_id, badd.flags, | |
7351 | bmsg); | |
7352 | } | |
7353 | ||
7354 | if (error) { | |
7355 | ofp_bundle_entry_free(bmsg); | |
7356 | } | |
7357 | ||
7358 | return error; | |
777af88d AC |
7359 | } |
7360 | ||
6159c531 | 7361 | static enum ofperr |
4e548ad9 | 7362 | handle_tlv_table_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
6159c531 | 7363 | { |
4e548ad9 | 7364 | struct ofputil_tlv_table_mod ttm; |
6159c531 JG |
7365 | enum ofperr error; |
7366 | ||
7367 | error = reject_slave_controller(ofconn); | |
7368 | if (error) { | |
7369 | return error; | |
7370 | } | |
7371 | ||
4e548ad9 | 7372 | error = ofputil_decode_tlv_table_mod(oh, &ttm); |
6159c531 JG |
7373 | if (error) { |
7374 | return error; | |
7375 | } | |
7376 | ||
4e548ad9 | 7377 | error = tun_metadata_table_mod(&ttm); |
9558d2a5 | 7378 | |
4e548ad9 | 7379 | ofputil_uninit_tlv_table(&ttm.mappings); |
9558d2a5 | 7380 | return error; |
6159c531 JG |
7381 | } |
7382 | ||
7383 | static enum ofperr | |
4e548ad9 | 7384 | handle_tlv_table_request(struct ofconn *ofconn, const struct ofp_header *oh) |
6159c531 | 7385 | { |
4e548ad9 | 7386 | struct ofputil_tlv_table_reply ttr; |
9558d2a5 JG |
7387 | struct ofpbuf *b; |
7388 | ||
4e548ad9 ML |
7389 | tun_metadata_table_request(&ttr); |
7390 | b = ofputil_encode_tlv_table_reply(oh, &ttr); | |
7391 | ofputil_uninit_tlv_table(&ttr.mappings); | |
9558d2a5 JG |
7392 | |
7393 | ofconn_send_reply(ofconn, b); | |
7394 | return 0; | |
6159c531 JG |
7395 | } |
7396 | ||
90bf1e07 | 7397 | static enum ofperr |
d1e2cf21 | 7398 | handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg) |
15aaf599 | 7399 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 7400 | { |
6fd6ed71 | 7401 | const struct ofp_header *oh = msg->data; |
982697a4 | 7402 | enum ofptype type; |
90bf1e07 | 7403 | enum ofperr error; |
064af421 | 7404 | |
982697a4 | 7405 | error = ofptype_decode(&type, oh); |
d1e2cf21 BP |
7406 | if (error) { |
7407 | return error; | |
7408 | } | |
ff3c2c63 YT |
7409 | if (oh->version >= OFP13_VERSION && ofpmsg_is_stat_request(oh) |
7410 | && ofpmp_more(oh)) { | |
7411 | /* We have no buffer implementation for multipart requests. | |
7412 | * Report overflow for requests which consists of multiple | |
7413 | * messages. */ | |
7414 | return OFPERR_OFPBRC_MULTIPART_BUFFER_OVERFLOW; | |
7415 | } | |
064af421 | 7416 | |
982697a4 | 7417 | switch (type) { |
d1e2cf21 | 7418 | /* OpenFlow requests. */ |
982697a4 | 7419 | case OFPTYPE_ECHO_REQUEST: |
d1e2cf21 | 7420 | return handle_echo_request(ofconn, oh); |
064af421 | 7421 | |
982697a4 | 7422 | case OFPTYPE_FEATURES_REQUEST: |
d1e2cf21 | 7423 | return handle_features_request(ofconn, oh); |
064af421 | 7424 | |
982697a4 | 7425 | case OFPTYPE_GET_CONFIG_REQUEST: |
d1e2cf21 | 7426 | return handle_get_config_request(ofconn, oh); |
064af421 | 7427 | |
982697a4 BP |
7428 | case OFPTYPE_SET_CONFIG: |
7429 | return handle_set_config(ofconn, oh); | |
064af421 | 7430 | |
982697a4 BP |
7431 | case OFPTYPE_PACKET_OUT: |
7432 | return handle_packet_out(ofconn, oh); | |
064af421 | 7433 | |
982697a4 | 7434 | case OFPTYPE_PORT_MOD: |
d1e2cf21 | 7435 | return handle_port_mod(ofconn, oh); |
064af421 | 7436 | |
982697a4 | 7437 | case OFPTYPE_FLOW_MOD: |
2e4f5fcf | 7438 | return handle_flow_mod(ofconn, oh); |
064af421 | 7439 | |
7395c052 NZ |
7440 | case OFPTYPE_GROUP_MOD: |
7441 | return handle_group_mod(ofconn, oh); | |
7442 | ||
918f2b82 AZ |
7443 | case OFPTYPE_TABLE_MOD: |
7444 | return handle_table_mod(ofconn, oh); | |
7445 | ||
9cae45dc JR |
7446 | case OFPTYPE_METER_MOD: |
7447 | return handle_meter_mod(ofconn, oh); | |
7448 | ||
982697a4 | 7449 | case OFPTYPE_BARRIER_REQUEST: |
d1e2cf21 | 7450 | return handle_barrier_request(ofconn, oh); |
064af421 | 7451 | |
6ea4776b JR |
7452 | case OFPTYPE_ROLE_REQUEST: |
7453 | return handle_role_request(ofconn, oh); | |
7454 | ||
d1e2cf21 | 7455 | /* OpenFlow replies. */ |
982697a4 | 7456 | case OFPTYPE_ECHO_REPLY: |
d1e2cf21 | 7457 | return 0; |
246e61ea | 7458 | |
d1e2cf21 | 7459 | /* Nicira extension requests. */ |
982697a4 | 7460 | case OFPTYPE_FLOW_MOD_TABLE_ID: |
6c1491fb | 7461 | return handle_nxt_flow_mod_table_id(ofconn, oh); |
d1e2cf21 | 7462 | |
982697a4 | 7463 | case OFPTYPE_SET_FLOW_FORMAT: |
d1e2cf21 BP |
7464 | return handle_nxt_set_flow_format(ofconn, oh); |
7465 | ||
982697a4 | 7466 | case OFPTYPE_SET_PACKET_IN_FORMAT: |
54834960 EJ |
7467 | return handle_nxt_set_packet_in_format(ofconn, oh); |
7468 | ||
982697a4 | 7469 | case OFPTYPE_SET_CONTROLLER_ID: |
a7349929 BP |
7470 | return handle_nxt_set_controller_id(ofconn, oh); |
7471 | ||
982697a4 | 7472 | case OFPTYPE_FLOW_AGE: |
f27f2134 BP |
7473 | /* Nothing to do. */ |
7474 | return 0; | |
7475 | ||
982697a4 | 7476 | case OFPTYPE_FLOW_MONITOR_CANCEL: |
2b07c8b1 BP |
7477 | return handle_flow_monitor_cancel(ofconn, oh); |
7478 | ||
982697a4 | 7479 | case OFPTYPE_SET_ASYNC_CONFIG: |
80d5aefd BP |
7480 | return handle_nxt_set_async_config(ofconn, oh); |
7481 | ||
c423b3b3 AC |
7482 | case OFPTYPE_GET_ASYNC_REQUEST: |
7483 | return handle_nxt_get_async_request(ofconn, oh); | |
7484 | ||
77ab5fd2 BP |
7485 | case OFPTYPE_NXT_RESUME: |
7486 | return handle_nxt_resume(ofconn, oh); | |
7487 | ||
349adfb2 | 7488 | /* Statistics requests. */ |
982697a4 BP |
7489 | case OFPTYPE_DESC_STATS_REQUEST: |
7490 | return handle_desc_stats_request(ofconn, oh); | |
7491 | ||
7492 | case OFPTYPE_FLOW_STATS_REQUEST: | |
7493 | return handle_flow_stats_request(ofconn, oh); | |
7494 | ||
7495 | case OFPTYPE_AGGREGATE_STATS_REQUEST: | |
7496 | return handle_aggregate_stats_request(ofconn, oh); | |
7497 | ||
7498 | case OFPTYPE_TABLE_STATS_REQUEST: | |
7499 | return handle_table_stats_request(ofconn, oh); | |
7500 | ||
3c4e10fb BP |
7501 | case OFPTYPE_TABLE_FEATURES_STATS_REQUEST: |
7502 | return handle_table_features_request(ofconn, oh); | |
7503 | ||
03c72922 BP |
7504 | case OFPTYPE_TABLE_DESC_REQUEST: |
7505 | return handle_table_desc_request(ofconn, oh); | |
7506 | ||
982697a4 BP |
7507 | case OFPTYPE_PORT_STATS_REQUEST: |
7508 | return handle_port_stats_request(ofconn, oh); | |
7509 | ||
7510 | case OFPTYPE_QUEUE_STATS_REQUEST: | |
7511 | return handle_queue_stats_request(ofconn, oh); | |
7512 | ||
7513 | case OFPTYPE_PORT_DESC_STATS_REQUEST: | |
7514 | return handle_port_desc_stats_request(ofconn, oh); | |
7515 | ||
7516 | case OFPTYPE_FLOW_MONITOR_STATS_REQUEST: | |
7517 | return handle_flow_monitor_request(ofconn, oh); | |
7518 | ||
261bd854 BP |
7519 | case OFPTYPE_METER_STATS_REQUEST: |
7520 | case OFPTYPE_METER_CONFIG_STATS_REQUEST: | |
9cae45dc JR |
7521 | return handle_meter_request(ofconn, oh, type); |
7522 | ||
261bd854 | 7523 | case OFPTYPE_METER_FEATURES_STATS_REQUEST: |
9cae45dc JR |
7524 | return handle_meter_features_request(ofconn, oh); |
7525 | ||
261bd854 | 7526 | case OFPTYPE_GROUP_STATS_REQUEST: |
7395c052 NZ |
7527 | return handle_group_stats_request(ofconn, oh); |
7528 | ||
261bd854 | 7529 | case OFPTYPE_GROUP_DESC_STATS_REQUEST: |
7395c052 NZ |
7530 | return handle_group_desc_stats_request(ofconn, oh); |
7531 | ||
261bd854 | 7532 | case OFPTYPE_GROUP_FEATURES_STATS_REQUEST: |
7395c052 NZ |
7533 | return handle_group_features_stats_request(ofconn, oh); |
7534 | ||
7395c052 | 7535 | case OFPTYPE_QUEUE_GET_CONFIG_REQUEST: |
e8f9a7bb | 7536 | return handle_queue_get_config_request(ofconn, oh); |
2e1ae200 | 7537 | |
777af88d AC |
7538 | case OFPTYPE_BUNDLE_CONTROL: |
7539 | return handle_bundle_control(ofconn, oh); | |
7540 | ||
7541 | case OFPTYPE_BUNDLE_ADD_MESSAGE: | |
7542 | return handle_bundle_add(ofconn, oh); | |
7543 | ||
4e548ad9 ML |
7544 | case OFPTYPE_NXT_TLV_TABLE_MOD: |
7545 | return handle_tlv_table_mod(ofconn, oh); | |
6159c531 | 7546 | |
4e548ad9 ML |
7547 | case OFPTYPE_NXT_TLV_TABLE_REQUEST: |
7548 | return handle_tlv_table_request(ofconn, oh); | |
6159c531 | 7549 | |
fb8f22c1 BY |
7550 | case OFPTYPE_IPFIX_BRIDGE_STATS_REQUEST: |
7551 | return handle_ipfix_bridge_stats_request(ofconn, oh); | |
7552 | ||
7553 | case OFPTYPE_IPFIX_FLOW_STATS_REQUEST: | |
7554 | return handle_ipfix_flow_stats_request(ofconn, oh); | |
7555 | ||
982697a4 BP |
7556 | case OFPTYPE_HELLO: |
7557 | case OFPTYPE_ERROR: | |
7558 | case OFPTYPE_FEATURES_REPLY: | |
7559 | case OFPTYPE_GET_CONFIG_REPLY: | |
7560 | case OFPTYPE_PACKET_IN: | |
7561 | case OFPTYPE_FLOW_REMOVED: | |
7562 | case OFPTYPE_PORT_STATUS: | |
7563 | case OFPTYPE_BARRIER_REPLY: | |
c545d38d | 7564 | case OFPTYPE_QUEUE_GET_CONFIG_REPLY: |
982697a4 BP |
7565 | case OFPTYPE_DESC_STATS_REPLY: |
7566 | case OFPTYPE_FLOW_STATS_REPLY: | |
7567 | case OFPTYPE_QUEUE_STATS_REPLY: | |
7568 | case OFPTYPE_PORT_STATS_REPLY: | |
7569 | case OFPTYPE_TABLE_STATS_REPLY: | |
7570 | case OFPTYPE_AGGREGATE_STATS_REPLY: | |
7571 | case OFPTYPE_PORT_DESC_STATS_REPLY: | |
7572 | case OFPTYPE_ROLE_REPLY: | |
7573 | case OFPTYPE_FLOW_MONITOR_PAUSED: | |
7574 | case OFPTYPE_FLOW_MONITOR_RESUMED: | |
7575 | case OFPTYPE_FLOW_MONITOR_STATS_REPLY: | |
2e1ae200 | 7576 | case OFPTYPE_GET_ASYNC_REPLY: |
261bd854 BP |
7577 | case OFPTYPE_GROUP_STATS_REPLY: |
7578 | case OFPTYPE_GROUP_DESC_STATS_REPLY: | |
7579 | case OFPTYPE_GROUP_FEATURES_STATS_REPLY: | |
7580 | case OFPTYPE_METER_STATS_REPLY: | |
7581 | case OFPTYPE_METER_CONFIG_STATS_REPLY: | |
7582 | case OFPTYPE_METER_FEATURES_STATS_REPLY: | |
7583 | case OFPTYPE_TABLE_FEATURES_STATS_REPLY: | |
03c72922 | 7584 | case OFPTYPE_TABLE_DESC_REPLY: |
252f3411 | 7585 | case OFPTYPE_ROLE_STATUS: |
3c35db62 | 7586 | case OFPTYPE_REQUESTFORWARD: |
6c6eedc5 | 7587 | case OFPTYPE_TABLE_STATUS: |
4e548ad9 | 7588 | case OFPTYPE_NXT_TLV_TABLE_REPLY: |
fb8f22c1 BY |
7589 | case OFPTYPE_IPFIX_BRIDGE_STATS_REPLY: |
7590 | case OFPTYPE_IPFIX_FLOW_STATS_REPLY: | |
064af421 | 7591 | default: |
76ec08e0 YT |
7592 | if (ofpmsg_is_stat_request(oh)) { |
7593 | return OFPERR_OFPBRC_BAD_STAT; | |
7594 | } else { | |
7595 | return OFPERR_OFPBRC_BAD_TYPE; | |
7596 | } | |
064af421 | 7597 | } |
d1e2cf21 | 7598 | } |
064af421 | 7599 | |
b20f4073 | 7600 | static void |
e03248b7 | 7601 | handle_openflow(struct ofconn *ofconn, const struct ofpbuf *ofp_msg) |
15aaf599 | 7602 | OVS_EXCLUDED(ofproto_mutex) |
d1e2cf21 | 7603 | { |
d51c8b71 JR |
7604 | enum ofperr error = handle_openflow__(ofconn, ofp_msg); |
7605 | ||
b20f4073 | 7606 | if (error) { |
6fd6ed71 | 7607 | ofconn_send_error(ofconn, ofp_msg->data, error); |
064af421 | 7608 | } |
d1e2cf21 | 7609 | COVERAGE_INC(ofproto_recv_openflow); |
7ee20df1 BP |
7610 | } |
7611 | \f | |
7612 | /* Asynchronous operations. */ | |
7613 | ||
c84d8691 | 7614 | static void |
0a0d9385 JR |
7615 | send_buffered_packet(const struct openflow_mod_requester *req, |
7616 | uint32_t buffer_id, struct rule *rule) | |
15aaf599 | 7617 | OVS_REQUIRES(ofproto_mutex) |
7ee20df1 | 7618 | { |
c84d8691 JR |
7619 | if (req && req->ofconn && buffer_id != UINT32_MAX) { |
7620 | struct ofproto *ofproto = ofconn_get_ofproto(req->ofconn); | |
cf62fa4c | 7621 | struct dp_packet *packet; |
834fe5cb | 7622 | ofp_port_t in_port; |
c84d8691 | 7623 | enum ofperr error; |
b277c7cc | 7624 | |
c84d8691 JR |
7625 | error = ofconn_pktbuf_retrieve(req->ofconn, buffer_id, &packet, |
7626 | &in_port); | |
834fe5cb BP |
7627 | if (packet) { |
7628 | struct rule_execute *re; | |
b277c7cc | 7629 | |
834fe5cb | 7630 | ofproto_rule_ref(rule); |
b277c7cc | 7631 | |
834fe5cb BP |
7632 | re = xmalloc(sizeof *re); |
7633 | re->rule = rule; | |
7634 | re->in_port = in_port; | |
7635 | re->packet = packet; | |
b277c7cc | 7636 | |
834fe5cb BP |
7637 | if (!guarded_list_push_back(&ofproto->rule_executes, |
7638 | &re->list_node, 1024)) { | |
a2143702 | 7639 | ofproto_rule_unref(rule); |
cf62fa4c | 7640 | dp_packet_delete(re->packet); |
834fe5cb | 7641 | free(re); |
e615b0a3 | 7642 | } |
c84d8691 JR |
7643 | } else { |
7644 | ofconn_send_error(req->ofconn, req->request, error); | |
af822017 | 7645 | } |
7ee20df1 | 7646 | } |
7ee20df1 | 7647 | } |
064af421 | 7648 | \f |
064af421 | 7649 | static uint64_t |
fa60c019 | 7650 | pick_datapath_id(const struct ofproto *ofproto) |
064af421 | 7651 | { |
fa60c019 | 7652 | const struct ofport *port; |
064af421 | 7653 | |
abe529af | 7654 | port = ofproto_get_port(ofproto, OFPP_LOCAL); |
fa60c019 | 7655 | if (port) { |
74ff3298 | 7656 | struct eth_addr ea; |
fa60c019 BP |
7657 | int error; |
7658 | ||
74ff3298 | 7659 | error = netdev_get_etheraddr(port->netdev, &ea); |
064af421 BP |
7660 | if (!error) { |
7661 | return eth_addr_to_uint64(ea); | |
7662 | } | |
fbfa2911 BP |
7663 | VLOG_WARN("%s: could not get MAC address for %s (%s)", |
7664 | ofproto->name, netdev_get_name(port->netdev), | |
10a89ef0 | 7665 | ovs_strerror(error)); |
064af421 | 7666 | } |
fa60c019 | 7667 | return ofproto->fallback_dpid; |
064af421 BP |
7668 | } |
7669 | ||
7670 | static uint64_t | |
7671 | pick_fallback_dpid(void) | |
7672 | { | |
74ff3298 JR |
7673 | struct eth_addr ea; |
7674 | eth_addr_nicira_random(&ea); | |
064af421 BP |
7675 | return eth_addr_to_uint64(ea); |
7676 | } | |
7677 | \f | |
254750ce BP |
7678 | /* Table overflow policy. */ |
7679 | ||
ad3efdcb EJ |
7680 | /* Chooses and updates 'rulep' with a rule to evict from 'table'. Sets 'rulep' |
7681 | * to NULL if the table is not configured to evict rules or if the table | |
7682 | * contains no evictable rules. (Rules with a readlock on their evict rwlock, | |
7683 | * or with no timeouts are not evictable.) */ | |
7684 | static bool | |
7685 | choose_rule_to_evict(struct oftable *table, struct rule **rulep) | |
15aaf599 | 7686 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
7687 | { |
7688 | struct eviction_group *evg; | |
7689 | ||
ad3efdcb | 7690 | *rulep = NULL; |
82c22d34 | 7691 | if (!table->eviction) { |
ad3efdcb | 7692 | return false; |
254750ce BP |
7693 | } |
7694 | ||
7695 | /* In the common case, the outer and inner loops here will each be entered | |
7696 | * exactly once: | |
7697 | * | |
7698 | * - The inner loop normally "return"s in its first iteration. If the | |
7699 | * eviction group has any evictable rules, then it always returns in | |
7700 | * some iteration. | |
7701 | * | |
7702 | * - The outer loop only iterates more than once if the largest eviction | |
7703 | * group has no evictable rules. | |
7704 | * | |
7705 | * - The outer loop can exit only if table's 'max_flows' is all filled up | |
afe2143d | 7706 | * by unevictable rules. */ |
254750ce BP |
7707 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { |
7708 | struct rule *rule; | |
7709 | ||
7710 | HEAP_FOR_EACH (rule, evg_node, &evg->rules) { | |
15aaf599 BP |
7711 | *rulep = rule; |
7712 | return true; | |
254750ce BP |
7713 | } |
7714 | } | |
7715 | ||
ad3efdcb | 7716 | return false; |
254750ce | 7717 | } |
254750ce BP |
7718 | \f |
7719 | /* Eviction groups. */ | |
7720 | ||
7721 | /* Returns the priority to use for an eviction_group that contains 'n_rules' | |
7722 | * rules. The priority contains low-order random bits to ensure that eviction | |
7723 | * groups with the same number of rules are prioritized randomly. */ | |
7724 | static uint32_t | |
7725 | eviction_group_priority(size_t n_rules) | |
7726 | { | |
7727 | uint16_t size = MIN(UINT16_MAX, n_rules); | |
7728 | return (size << 16) | random_uint16(); | |
7729 | } | |
7730 | ||
7731 | /* Updates 'evg', an eviction_group within 'table', following a change that | |
7732 | * adds or removes rules in 'evg'. */ | |
7733 | static void | |
7734 | eviction_group_resized(struct oftable *table, struct eviction_group *evg) | |
15aaf599 | 7735 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
7736 | { |
7737 | heap_change(&table->eviction_groups_by_size, &evg->size_node, | |
7738 | eviction_group_priority(heap_count(&evg->rules))); | |
7739 | } | |
7740 | ||
7741 | /* Destroys 'evg', an eviction_group within 'table': | |
7742 | * | |
7743 | * - Removes all the rules, if any, from 'evg'. (It doesn't destroy the | |
7744 | * rules themselves, just removes them from the eviction group.) | |
7745 | * | |
7746 | * - Removes 'evg' from 'table'. | |
7747 | * | |
7748 | * - Frees 'evg'. */ | |
7749 | static void | |
7750 | eviction_group_destroy(struct oftable *table, struct eviction_group *evg) | |
15aaf599 | 7751 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
7752 | { |
7753 | while (!heap_is_empty(&evg->rules)) { | |
7754 | struct rule *rule; | |
7755 | ||
7756 | rule = CONTAINER_OF(heap_pop(&evg->rules), struct rule, evg_node); | |
7757 | rule->eviction_group = NULL; | |
7758 | } | |
7759 | hmap_remove(&table->eviction_groups_by_id, &evg->id_node); | |
7760 | heap_remove(&table->eviction_groups_by_size, &evg->size_node); | |
7761 | heap_destroy(&evg->rules); | |
7762 | free(evg); | |
7763 | } | |
7764 | ||
7765 | /* Removes 'rule' from its eviction group, if any. */ | |
7766 | static void | |
7767 | eviction_group_remove_rule(struct rule *rule) | |
15aaf599 | 7768 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
7769 | { |
7770 | if (rule->eviction_group) { | |
7771 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
7772 | struct eviction_group *evg = rule->eviction_group; | |
7773 | ||
7774 | rule->eviction_group = NULL; | |
7775 | heap_remove(&evg->rules, &rule->evg_node); | |
7776 | if (heap_is_empty(&evg->rules)) { | |
7777 | eviction_group_destroy(table, evg); | |
7778 | } else { | |
7779 | eviction_group_resized(table, evg); | |
7780 | } | |
7781 | } | |
7782 | } | |
7783 | ||
7784 | /* Hashes the 'rule''s values for the eviction_fields of 'rule''s table, and | |
7785 | * returns the hash value. */ | |
7786 | static uint32_t | |
7787 | eviction_group_hash_rule(struct rule *rule) | |
15aaf599 | 7788 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
7789 | { |
7790 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
7791 | const struct mf_subfield *sf; | |
5cb7a798 | 7792 | struct flow flow; |
254750ce BP |
7793 | uint32_t hash; |
7794 | ||
7795 | hash = table->eviction_group_id_basis; | |
8fd47924 | 7796 | miniflow_expand(rule->cr.match.flow, &flow); |
254750ce BP |
7797 | for (sf = table->eviction_fields; |
7798 | sf < &table->eviction_fields[table->n_eviction_fields]; | |
7799 | sf++) | |
7800 | { | |
aff49b8c | 7801 | if (mf_are_prereqs_ok(sf->field, &flow, NULL)) { |
254750ce BP |
7802 | union mf_value value; |
7803 | ||
5cb7a798 | 7804 | mf_get_value(sf->field, &flow, &value); |
254750ce BP |
7805 | if (sf->ofs) { |
7806 | bitwise_zero(&value, sf->field->n_bytes, 0, sf->ofs); | |
7807 | } | |
7808 | if (sf->ofs + sf->n_bits < sf->field->n_bytes * 8) { | |
7809 | unsigned int start = sf->ofs + sf->n_bits; | |
7810 | bitwise_zero(&value, sf->field->n_bytes, start, | |
7811 | sf->field->n_bytes * 8 - start); | |
7812 | } | |
7813 | hash = hash_bytes(&value, sf->field->n_bytes, hash); | |
7814 | } else { | |
7815 | hash = hash_int(hash, 0); | |
7816 | } | |
7817 | } | |
7818 | ||
7819 | return hash; | |
7820 | } | |
7821 | ||
7822 | /* Returns an eviction group within 'table' with the given 'id', creating one | |
7823 | * if necessary. */ | |
7824 | static struct eviction_group * | |
7825 | eviction_group_find(struct oftable *table, uint32_t id) | |
15aaf599 | 7826 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
7827 | { |
7828 | struct eviction_group *evg; | |
7829 | ||
7830 | HMAP_FOR_EACH_WITH_HASH (evg, id_node, id, &table->eviction_groups_by_id) { | |
7831 | return evg; | |
7832 | } | |
7833 | ||
7834 | evg = xmalloc(sizeof *evg); | |
7835 | hmap_insert(&table->eviction_groups_by_id, &evg->id_node, id); | |
7836 | heap_insert(&table->eviction_groups_by_size, &evg->size_node, | |
7837 | eviction_group_priority(0)); | |
7838 | heap_init(&evg->rules); | |
7839 | ||
7840 | return evg; | |
7841 | } | |
7842 | ||
7843 | /* Returns an eviction priority for 'rule'. The return value should be | |
f70b94de BP |
7844 | * interpreted so that higher priorities make a rule a more attractive |
7845 | * candidate for eviction. */ | |
7846 | static uint64_t | |
dc437090 | 7847 | rule_eviction_priority(struct ofproto *ofproto, struct rule *rule) |
15aaf599 | 7848 | OVS_REQUIRES(ofproto_mutex) |
254750ce | 7849 | { |
f70b94de BP |
7850 | /* Calculate absolute time when this flow will expire. If it will never |
7851 | * expire, then return 0 to make it unevictable. */ | |
dc437090 | 7852 | long long int expiration = LLONG_MAX; |
dc437090 | 7853 | if (rule->hard_timeout) { |
f70b94de BP |
7854 | /* 'modified' needs protection even when we hold 'ofproto_mutex'. */ |
7855 | ovs_mutex_lock(&rule->mutex); | |
7856 | long long int modified = rule->modified; | |
7857 | ovs_mutex_unlock(&rule->mutex); | |
7858 | ||
dc437090 JR |
7859 | expiration = modified + rule->hard_timeout * 1000; |
7860 | } | |
7861 | if (rule->idle_timeout) { | |
7862 | uint64_t packets, bytes; | |
7863 | long long int used; | |
7864 | long long int idle_expiration; | |
7865 | ||
7866 | ofproto->ofproto_class->rule_get_stats(rule, &packets, &bytes, &used); | |
7867 | idle_expiration = used + rule->idle_timeout * 1000; | |
7868 | expiration = MIN(expiration, idle_expiration); | |
7869 | } | |
254750ce BP |
7870 | if (expiration == LLONG_MAX) { |
7871 | return 0; | |
7872 | } | |
7873 | ||
7874 | /* Calculate the time of expiration as a number of (approximate) seconds | |
7875 | * after program startup. | |
7876 | * | |
7877 | * This should work OK for program runs that last UINT32_MAX seconds or | |
7878 | * less. Therefore, please restart OVS at least once every 136 years. */ | |
f70b94de | 7879 | uint32_t expiration_ofs = (expiration >> 10) - (time_boot_msec() >> 10); |
254750ce | 7880 | |
f70b94de BP |
7881 | /* Combine expiration time with OpenFlow "importance" to form a single |
7882 | * priority value. We want flows with relatively low "importance" to be | |
7883 | * evicted before even considering expiration time, so put "importance" in | |
7884 | * the most significant bits and expiration time in the least significant | |
7885 | * bits. | |
7886 | * | |
7887 | * Small 'priority' should be evicted before those with large 'priority'. | |
7888 | * The caller expects the opposite convention (a large return value being | |
7889 | * more attractive for eviction) so we invert it before returning. */ | |
7890 | uint64_t priority = ((uint64_t) rule->importance << 32) + expiration_ofs; | |
7891 | return UINT64_MAX - priority; | |
254750ce BP |
7892 | } |
7893 | ||
7894 | /* Adds 'rule' to an appropriate eviction group for its oftable's | |
7895 | * configuration. Does nothing if 'rule''s oftable doesn't have eviction | |
7896 | * enabled, or if 'rule' is a permanent rule (one that will never expire on its | |
7897 | * own). | |
7898 | * | |
7899 | * The caller must ensure that 'rule' is not already in an eviction group. */ | |
7900 | static void | |
7901 | eviction_group_add_rule(struct rule *rule) | |
15aaf599 | 7902 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
7903 | { |
7904 | struct ofproto *ofproto = rule->ofproto; | |
7905 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
a3779dbc | 7906 | bool has_timeout; |
254750ce | 7907 | |
dc437090 JR |
7908 | /* Timeouts may be modified only when holding 'ofproto_mutex'. We have it |
7909 | * so no additional protection is needed. */ | |
a3779dbc | 7910 | has_timeout = rule->hard_timeout || rule->idle_timeout; |
a3779dbc | 7911 | |
82c22d34 | 7912 | if (table->eviction && has_timeout) { |
254750ce BP |
7913 | struct eviction_group *evg; |
7914 | ||
7915 | evg = eviction_group_find(table, eviction_group_hash_rule(rule)); | |
7916 | ||
7917 | rule->eviction_group = evg; | |
7918 | heap_insert(&evg->rules, &rule->evg_node, | |
dc437090 | 7919 | rule_eviction_priority(ofproto, rule)); |
254750ce BP |
7920 | eviction_group_resized(table, evg); |
7921 | } | |
7922 | } | |
7923 | \f | |
d0918789 BP |
7924 | /* oftables. */ |
7925 | ||
7926 | /* Initializes 'table'. */ | |
7927 | static void | |
7928 | oftable_init(struct oftable *table) | |
7929 | { | |
5c67e4af | 7930 | memset(table, 0, sizeof *table); |
d70e8c28 | 7931 | classifier_init(&table->cls, flow_segment_u64s); |
ec1c5c7e | 7932 | table->max_flows = UINT_MAX; |
d79e3d70 | 7933 | table->n_flows = 0; |
82c22d34 BP |
7934 | hmap_init(&table->eviction_groups_by_id); |
7935 | heap_init(&table->eviction_groups_by_size); | |
3c1bb396 | 7936 | atomic_init(&table->miss_config, OFPUTIL_TABLE_MISS_DEFAULT); |
f017d986 | 7937 | |
f017d986 JR |
7938 | classifier_set_prefix_fields(&table->cls, default_prefix_fields, |
7939 | ARRAY_SIZE(default_prefix_fields)); | |
d611866c SH |
7940 | |
7941 | atomic_init(&table->n_matched, 0); | |
7942 | atomic_init(&table->n_missed, 0); | |
d0918789 BP |
7943 | } |
7944 | ||
254750ce | 7945 | /* Destroys 'table', including its classifier and eviction groups. |
d0918789 BP |
7946 | * |
7947 | * The caller is responsible for freeing 'table' itself. */ | |
7948 | static void | |
7949 | oftable_destroy(struct oftable *table) | |
7950 | { | |
cb22974d | 7951 | ovs_assert(classifier_is_empty(&table->cls)); |
82c22d34 | 7952 | |
7394b8fb | 7953 | ovs_mutex_lock(&ofproto_mutex); |
82c22d34 | 7954 | oftable_configure_eviction(table, 0, NULL, 0); |
7394b8fb | 7955 | ovs_mutex_unlock(&ofproto_mutex); |
82c22d34 BP |
7956 | |
7957 | hmap_destroy(&table->eviction_groups_by_id); | |
7958 | heap_destroy(&table->eviction_groups_by_size); | |
d0918789 | 7959 | classifier_destroy(&table->cls); |
254750ce BP |
7960 | free(table->name); |
7961 | } | |
7962 | ||
7963 | /* Changes the name of 'table' to 'name'. If 'name' is NULL or the empty | |
7964 | * string, then 'table' will use its default name. | |
7965 | * | |
7966 | * This only affects the name exposed for a table exposed through the OpenFlow | |
7967 | * OFPST_TABLE (as printed by "ovs-ofctl dump-tables"). */ | |
7968 | static void | |
7969 | oftable_set_name(struct oftable *table, const char *name) | |
7970 | { | |
7971 | if (name && name[0]) { | |
7972 | int len = strnlen(name, OFP_MAX_TABLE_NAME_LEN); | |
7973 | if (!table->name || strncmp(name, table->name, len)) { | |
7974 | free(table->name); | |
7975 | table->name = xmemdup0(name, len); | |
7976 | } | |
7977 | } else { | |
7978 | free(table->name); | |
7979 | table->name = NULL; | |
7980 | } | |
7981 | } | |
7982 | ||
254750ce BP |
7983 | /* oftables support a choice of two policies when adding a rule would cause the |
7984 | * number of flows in the table to exceed the configured maximum number: either | |
7985 | * they can refuse to add the new flow or they can evict some existing flow. | |
7986 | * This function configures the latter policy on 'table', with fairness based | |
7987 | * on the values of the 'n_fields' fields specified in 'fields'. (Specifying | |
7988 | * 'n_fields' as 0 disables fairness.) */ | |
7989 | static void | |
82c22d34 BP |
7990 | oftable_configure_eviction(struct oftable *table, unsigned int eviction, |
7991 | const struct mf_subfield *fields, size_t n_fields) | |
15aaf599 | 7992 | OVS_REQUIRES(ofproto_mutex) |
254750ce | 7993 | { |
254750ce BP |
7994 | struct rule *rule; |
7995 | ||
82c22d34 | 7996 | if ((table->eviction != 0) == (eviction != 0) |
254750ce BP |
7997 | && n_fields == table->n_eviction_fields |
7998 | && (!n_fields | |
7999 | || !memcmp(fields, table->eviction_fields, | |
8000 | n_fields * sizeof *fields))) { | |
82c22d34 BP |
8001 | /* The set of eviction fields did not change. If 'eviction' changed, |
8002 | * it remains nonzero, so that we can just update table->eviction | |
8003 | * without fussing with the eviction groups. */ | |
8004 | table->eviction = eviction; | |
254750ce BP |
8005 | return; |
8006 | } | |
8007 | ||
82c22d34 BP |
8008 | /* Destroy existing eviction groups, then destroy and recreate data |
8009 | * structures to recover memory. */ | |
8010 | struct eviction_group *evg, *next; | |
8011 | HMAP_FOR_EACH_SAFE (evg, next, id_node, &table->eviction_groups_by_id) { | |
8012 | eviction_group_destroy(table, evg); | |
8013 | } | |
8014 | hmap_destroy(&table->eviction_groups_by_id); | |
254750ce | 8015 | hmap_init(&table->eviction_groups_by_id); |
82c22d34 | 8016 | heap_destroy(&table->eviction_groups_by_size); |
254750ce BP |
8017 | heap_init(&table->eviction_groups_by_size); |
8018 | ||
82c22d34 BP |
8019 | /* Replace eviction groups by the new ones, if there is a change. Free the |
8020 | * old fields only after allocating the new ones, because 'fields == | |
8021 | * table->eviction_fields' is possible. */ | |
8022 | struct mf_subfield *old_fields = table->eviction_fields; | |
8023 | table->n_eviction_fields = n_fields; | |
8024 | table->eviction_fields = (fields | |
8025 | ? xmemdup(fields, n_fields * sizeof *fields) | |
8026 | : NULL); | |
8027 | free(old_fields); | |
8028 | ||
8029 | /* Add the new eviction groups, if enabled. */ | |
8030 | table->eviction = eviction; | |
8031 | if (table->eviction) { | |
8032 | table->eviction_group_id_basis = random_uint32(); | |
8033 | CLS_FOR_EACH (rule, cr, &table->cls) { | |
8034 | eviction_group_add_rule(rule); | |
8035 | } | |
254750ce | 8036 | } |
d0918789 BP |
8037 | } |
8038 | ||
bc5e6a91 JR |
8039 | /* Inserts 'rule' from the ofproto data structures BEFORE caller has inserted |
8040 | * it to the classifier. */ | |
8041 | static void | |
8042 | ofproto_rule_insert__(struct ofproto *ofproto, struct rule *rule) | |
8043 | OVS_REQUIRES(ofproto_mutex) | |
8044 | { | |
8045 | const struct rule_actions *actions = rule_get_actions(rule); | |
8046 | ||
39c94593 JR |
8047 | ovs_assert(rule->removed); |
8048 | ||
bc5e6a91 | 8049 | if (rule->hard_timeout || rule->idle_timeout) { |
417e7e66 | 8050 | ovs_list_insert(&ofproto->expirable, &rule->expirable); |
bc5e6a91 JR |
8051 | } |
8052 | cookies_insert(ofproto, rule); | |
8053 | eviction_group_add_rule(rule); | |
8054 | if (actions->has_meter) { | |
8055 | meter_insert_rule(rule); | |
8056 | } | |
cc099268 JR |
8057 | if (actions->has_groups) { |
8058 | const struct ofpact_group *a; | |
8059 | OFPACT_FOR_EACH_TYPE_FLATTENED (a, GROUP, actions->ofpacts, | |
8060 | actions->ofpacts_len) { | |
8061 | struct ofgroup *group; | |
8062 | ||
5d08a275 JR |
8063 | group = ofproto_group_lookup(ofproto, a->group_id, OVS_VERSION_MAX, |
8064 | false); | |
cc099268 JR |
8065 | ovs_assert(group != NULL); |
8066 | group_add_rule(group, rule); | |
8067 | } | |
8068 | } | |
8069 | ||
39c94593 | 8070 | rule->removed = false; |
bc5e6a91 JR |
8071 | } |
8072 | ||
6787a49f JR |
8073 | /* Removes 'rule' from the ofproto data structures. Caller may have deferred |
8074 | * the removal from the classifier. */ | |
d0918789 | 8075 | static void |
802f84ff | 8076 | ofproto_rule_remove__(struct ofproto *ofproto, struct rule *rule) |
15aaf599 | 8077 | OVS_REQUIRES(ofproto_mutex) |
d0918789 | 8078 | { |
39c94593 JR |
8079 | ovs_assert(!rule->removed); |
8080 | ||
98eaac36 | 8081 | cookies_remove(ofproto, rule); |
2c916028 | 8082 | |
254750ce | 8083 | eviction_group_remove_rule(rule); |
417e7e66 BW |
8084 | if (!ovs_list_is_empty(&rule->expirable)) { |
8085 | ovs_list_remove(&rule->expirable); | |
e503cc19 | 8086 | } |
417e7e66 BW |
8087 | if (!ovs_list_is_empty(&rule->meter_list_node)) { |
8088 | ovs_list_remove(&rule->meter_list_node); | |
8089 | ovs_list_init(&rule->meter_list_node); | |
9cae45dc | 8090 | } |
802f84ff | 8091 | |
cc099268 JR |
8092 | /* Remove the rule from any groups, except from the group that is being |
8093 | * deleted, if any. */ | |
8094 | const struct rule_actions *actions = rule_get_actions(rule); | |
8095 | ||
8096 | if (actions->has_groups) { | |
8097 | const struct ofpact_group *a; | |
8098 | ||
8099 | OFPACT_FOR_EACH_TYPE (a, GROUP, actions->ofpacts, | |
8100 | actions->ofpacts_len) { | |
8101 | struct ofgroup *group; | |
8102 | ||
5d08a275 JR |
8103 | group = ofproto_group_lookup(ofproto, a->group_id, OVS_VERSION_MAX, |
8104 | false); | |
cc099268 JR |
8105 | ovs_assert(group); |
8106 | ||
8107 | /* Leave the rule for the group that is being deleted, if any, | |
8108 | * as we still need the list of rules for clean-up. */ | |
8109 | if (!group->being_deleted) { | |
8110 | group_remove_rule(group, rule); | |
8111 | } | |
8112 | } | |
8113 | } | |
8114 | ||
39c94593 | 8115 | rule->removed = true; |
0b4f2078 | 8116 | } |
d0918789 | 8117 | \f |
abe529af | 8118 | /* unixctl commands. */ |
7aa697dd | 8119 | |
abe529af | 8120 | struct ofproto * |
2ac6bedd | 8121 | ofproto_lookup(const char *name) |
7aa697dd | 8122 | { |
2ac6bedd | 8123 | struct ofproto *ofproto; |
7aa697dd | 8124 | |
2ac6bedd BP |
8125 | HMAP_FOR_EACH_WITH_HASH (ofproto, hmap_node, hash_string(name, 0), |
8126 | &all_ofprotos) { | |
8127 | if (!strcmp(ofproto->name, name)) { | |
8128 | return ofproto; | |
8129 | } | |
7aa697dd | 8130 | } |
2ac6bedd | 8131 | return NULL; |
7aa697dd BP |
8132 | } |
8133 | ||
8134 | static void | |
0e15264f BP |
8135 | ofproto_unixctl_list(struct unixctl_conn *conn, int argc OVS_UNUSED, |
8136 | const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED) | |
7aa697dd | 8137 | { |
7aa697dd | 8138 | struct ofproto *ofproto; |
7aa697dd | 8139 | struct ds results; |
7aa697dd | 8140 | |
7aa697dd | 8141 | ds_init(&results); |
2ac6bedd BP |
8142 | HMAP_FOR_EACH (ofproto, hmap_node, &all_ofprotos) { |
8143 | ds_put_format(&results, "%s\n", ofproto->name); | |
7aa697dd | 8144 | } |
bde9f75d | 8145 | unixctl_command_reply(conn, ds_cstr(&results)); |
7aa697dd | 8146 | ds_destroy(&results); |
7aa697dd BP |
8147 | } |
8148 | ||
8149 | static void | |
8150 | ofproto_unixctl_init(void) | |
8151 | { | |
8152 | static bool registered; | |
8153 | if (registered) { | |
8154 | return; | |
8155 | } | |
8156 | registered = true; | |
8157 | ||
0e15264f BP |
8158 | unixctl_command_register("ofproto/list", "", 0, 0, |
8159 | ofproto_unixctl_list, NULL); | |
064af421 | 8160 | } |