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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 BP |
33 | #include "hash.h" |
34 | #include "hmap.h" | |
064af421 | 35 | #include "netdev.h" |
09246b99 | 36 | #include "nx-match.h" |
064af421 | 37 | #include "ofp-print.h" |
b598f214 | 38 | #include "ofproto.h" |
5bee6e26 | 39 | #include "ofproto-provider.h" |
064af421 BP |
40 | #include "openflow/nicira-ext.h" |
41 | #include "openflow/openflow.h" | |
d271907f BW |
42 | #include "openvswitch/dynamic-string.h" |
43 | #include "openvswitch/meta-flow.h" | |
b598f214 | 44 | #include "openvswitch/ofp-actions.h" |
d271907f BW |
45 | #include "openvswitch/ofp-errors.h" |
46 | #include "openvswitch/ofp-msgs.h" | |
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" |
064af421 | 57 | #include "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" |
064af421 | 65 | |
d98e6007 | 66 | VLOG_DEFINE_THIS_MODULE(ofproto); |
064af421 | 67 | |
d76f09ea | 68 | COVERAGE_DEFINE(ofproto_flush); |
d76f09ea BP |
69 | COVERAGE_DEFINE(ofproto_packet_out); |
70 | COVERAGE_DEFINE(ofproto_queue_req); | |
71 | COVERAGE_DEFINE(ofproto_recv_openflow); | |
72 | COVERAGE_DEFINE(ofproto_reinit_ports); | |
d76f09ea BP |
73 | COVERAGE_DEFINE(ofproto_update_port); |
74 | ||
f017d986 JR |
75 | /* Default fields to use for prefix tries in each flow table, unless something |
76 | * else is configured. */ | |
77 | const enum mf_field_id default_prefix_fields[2] = | |
78 | { MFF_IPV4_DST, MFF_IPV4_SRC }; | |
79 | ||
d0918789 BP |
80 | /* oftable. */ |
81 | static void oftable_init(struct oftable *); | |
82 | static void oftable_destroy(struct oftable *); | |
878ae780 | 83 | |
254750ce BP |
84 | static void oftable_set_name(struct oftable *, const char *name); |
85 | ||
6787a49f | 86 | static enum ofperr evict_rules_from_table(struct oftable *) |
834fe5cb | 87 | OVS_REQUIRES(ofproto_mutex); |
82c22d34 BP |
88 | static void oftable_configure_eviction(struct oftable *, |
89 | unsigned int eviction, | |
90 | const struct mf_subfield *fields, | |
91 | size_t n_fields) | |
7394b8fb | 92 | OVS_REQUIRES(ofproto_mutex); |
254750ce | 93 | |
82c22d34 BP |
94 | /* This is the only combination of OpenFlow eviction flags that OVS supports: a |
95 | * combination of OF1.4+ importance, the remaining lifetime of the flow, and | |
96 | * fairness based on user-specified fields. */ | |
97 | #define OFPROTO_EVICTION_FLAGS \ | |
98 | (OFPTMPEF14_OTHER | OFPTMPEF14_IMPORTANCE | OFPTMPEF14_LIFETIME) | |
99 | ||
254750ce BP |
100 | /* A set of rules within a single OpenFlow table (oftable) that have the same |
101 | * values for the oftable's eviction_fields. A rule to be evicted, when one is | |
102 | * needed, is taken from the eviction group that contains the greatest number | |
103 | * of rules. | |
104 | * | |
105 | * An oftable owns any number of eviction groups, each of which contains any | |
106 | * number of rules. | |
107 | * | |
108 | * Membership in an eviction group is imprecise, based on the hash of the | |
109 | * oftable's eviction_fields (in the eviction_group's id_node.hash member). | |
110 | * That is, if two rules have different eviction_fields, but those | |
111 | * eviction_fields hash to the same value, then they will belong to the same | |
112 | * eviction_group anyway. | |
113 | * | |
114 | * (When eviction is not enabled on an oftable, we don't track any eviction | |
115 | * groups, to save time and space.) */ | |
116 | struct eviction_group { | |
117 | struct hmap_node id_node; /* In oftable's "eviction_groups_by_id". */ | |
118 | struct heap_node size_node; /* In oftable's "eviction_groups_by_size". */ | |
119 | struct heap rules; /* Contains "struct rule"s. */ | |
120 | }; | |
121 | ||
3d900aa7 BP |
122 | static bool choose_rule_to_evict(struct oftable *table, struct rule **rulep) |
123 | OVS_REQUIRES(ofproto_mutex); | |
f70b94de BP |
124 | static uint64_t rule_eviction_priority(struct ofproto *ofproto, struct rule *) |
125 | OVS_REQUIRES(ofproto_mutex); | |
3d900aa7 BP |
126 | static void eviction_group_add_rule(struct rule *) |
127 | OVS_REQUIRES(ofproto_mutex); | |
128 | static void eviction_group_remove_rule(struct rule *) | |
129 | OVS_REQUIRES(ofproto_mutex); | |
f29152ca | 130 | |
a9b22b7f BP |
131 | /* Criteria that flow_mod and other operations use for selecting rules on |
132 | * which to operate. */ | |
133 | struct rule_criteria { | |
134 | /* An OpenFlow table or 255 for all tables. */ | |
135 | uint8_t table_id; | |
136 | ||
137 | /* OpenFlow matching criteria. Interpreted different in "loose" way by | |
138 | * collect_rules_loose() and "strict" way by collect_rules_strict(), as | |
139 | * defined in the OpenFlow spec. */ | |
140 | struct cls_rule cr; | |
bd53aa17 | 141 | cls_version_t version; |
a9b22b7f BP |
142 | |
143 | /* Matching criteria for the OpenFlow cookie. Consider a bit B in a rule's | |
144 | * cookie and the corresponding bits C in 'cookie' and M in 'cookie_mask'. | |
145 | * The rule will not be selected if M is 1 and B != C. */ | |
146 | ovs_be64 cookie; | |
147 | ovs_be64 cookie_mask; | |
148 | ||
149 | /* Selection based on actions within a rule: | |
150 | * | |
151 | * If out_port != OFPP_ANY, selects only rules that output to out_port. | |
152 | * If out_group != OFPG_ALL, select only rules that output to out_group. */ | |
153 | ofp_port_t out_port; | |
154 | uint32_t out_group; | |
dd51dae2 BP |
155 | |
156 | /* If true, collects only rules that are modifiable. */ | |
157 | bool include_hidden; | |
158 | bool include_readonly; | |
a9b22b7f BP |
159 | }; |
160 | ||
161 | static void rule_criteria_init(struct rule_criteria *, uint8_t table_id, | |
eb391b76 | 162 | const struct match *match, int priority, |
18721c4a | 163 | cls_version_t version, |
a9b22b7f BP |
164 | ovs_be64 cookie, ovs_be64 cookie_mask, |
165 | ofp_port_t out_port, uint32_t out_group); | |
dd51dae2 BP |
166 | static void rule_criteria_require_rw(struct rule_criteria *, |
167 | bool can_write_readonly); | |
a9b22b7f BP |
168 | static void rule_criteria_destroy(struct rule_criteria *); |
169 | ||
35f48b8b BP |
170 | static enum ofperr collect_rules_loose(struct ofproto *, |
171 | const struct rule_criteria *, | |
172 | struct rule_collection *); | |
173 | ||
15aaf599 BP |
174 | /* A packet that needs to be passed to rule_execute(). |
175 | * | |
176 | * (We can't do this immediately from ofopgroup_complete() because that holds | |
177 | * ofproto_mutex, which rule_execute() needs released.) */ | |
35412852 | 178 | struct rule_execute { |
ca6ba700 | 179 | struct ovs_list list_node; /* In struct ofproto's "rule_executes" list. */ |
35412852 BP |
180 | struct rule *rule; /* Owns a reference to the rule. */ |
181 | ofp_port_t in_port; | |
cf62fa4c | 182 | struct dp_packet *packet; /* Owns the packet. */ |
35412852 BP |
183 | }; |
184 | ||
15aaf599 | 185 | static void run_rule_executes(struct ofproto *) OVS_EXCLUDED(ofproto_mutex); |
35412852 BP |
186 | static void destroy_rule_executes(struct ofproto *); |
187 | ||
35f48b8b BP |
188 | struct learned_cookie { |
189 | union { | |
190 | /* In struct ofproto's 'learned_cookies' hmap. */ | |
191 | struct hmap_node hmap_node OVS_GUARDED_BY(ofproto_mutex); | |
192 | ||
193 | /* In 'dead_cookies' list when removed from hmap. */ | |
ca6ba700 | 194 | struct ovs_list list_node; |
35f48b8b BP |
195 | } u; |
196 | ||
197 | /* Key. */ | |
198 | ovs_be64 cookie OVS_GUARDED_BY(ofproto_mutex); | |
199 | uint8_t table_id OVS_GUARDED_BY(ofproto_mutex); | |
200 | ||
201 | /* Number of references from "learn" actions. | |
202 | * | |
203 | * When this drops to 0, all of the flows in 'table_id' with the specified | |
204 | * 'cookie' are deleted. */ | |
205 | int n OVS_GUARDED_BY(ofproto_mutex); | |
206 | }; | |
207 | ||
208 | static const struct ofpact_learn *next_learn_with_delete( | |
209 | const struct rule_actions *, const struct ofpact_learn *start); | |
210 | ||
211 | static void learned_cookies_inc(struct ofproto *, const struct rule_actions *) | |
212 | OVS_REQUIRES(ofproto_mutex); | |
213 | static void learned_cookies_dec(struct ofproto *, const struct rule_actions *, | |
ca6ba700 | 214 | struct ovs_list *dead_cookies) |
35f48b8b | 215 | OVS_REQUIRES(ofproto_mutex); |
ca6ba700 | 216 | static void learned_cookies_flush(struct ofproto *, struct ovs_list *dead_cookies) |
35f48b8b BP |
217 | OVS_REQUIRES(ofproto_mutex); |
218 | ||
d0918789 | 219 | /* ofport. */ |
15aaf599 | 220 | static void ofport_destroy__(struct ofport *) OVS_EXCLUDED(ofproto_mutex); |
9aad5a5a | 221 | static void ofport_destroy(struct ofport *, bool del); |
d0918789 | 222 | |
01c77073 | 223 | static int update_port(struct ofproto *, const char *devname); |
d0918789 BP |
224 | static int init_ports(struct ofproto *); |
225 | static void reinit_ports(struct ofproto *); | |
7ee20df1 | 226 | |
fdcea803 GS |
227 | static long long int ofport_get_usage(const struct ofproto *, |
228 | ofp_port_t ofp_port); | |
229 | static void ofport_set_usage(struct ofproto *, ofp_port_t ofp_port, | |
230 | long long int last_used); | |
865b26a4 | 231 | static void ofport_remove_usage(struct ofproto *, ofp_port_t ofp_port); |
fdcea803 GS |
232 | |
233 | /* Ofport usage. | |
234 | * | |
235 | * Keeps track of the currently used and recently used ofport values and is | |
236 | * used to prevent immediate recycling of ofport values. */ | |
237 | struct ofport_usage { | |
238 | struct hmap_node hmap_node; /* In struct ofproto's "ofport_usage" hmap. */ | |
239 | ofp_port_t ofp_port; /* OpenFlow port number. */ | |
240 | long long int last_used; /* Last time the 'ofp_port' was used. LLONG_MAX | |
241 | represents in-use ofports. */ | |
242 | }; | |
243 | ||
254750ce | 244 | /* rule. */ |
f695ebfa JR |
245 | static void ofproto_rule_send_removed(struct rule *) |
246 | OVS_EXCLUDED(ofproto_mutex); | |
834fe5cb | 247 | static bool rule_is_readonly(const struct rule *); |
bc5e6a91 JR |
248 | static void ofproto_rule_insert__(struct ofproto *, struct rule *) |
249 | OVS_REQUIRES(ofproto_mutex); | |
802f84ff JR |
250 | static void ofproto_rule_remove__(struct ofproto *, struct rule *) |
251 | OVS_REQUIRES(ofproto_mutex); | |
254750ce | 252 | |
baae3d02 BP |
253 | /* The source of a flow_mod request, in the code that processes flow_mods. |
254 | * | |
255 | * A flow table modification request can be generated externally, via OpenFlow, | |
256 | * or internally through a function call. This structure indicates the source | |
257 | * of an OpenFlow-generated flow_mod. For an internal flow_mod, it isn't | |
258 | * meaningful and thus supplied as NULL. */ | |
259 | struct flow_mod_requester { | |
260 | struct ofconn *ofconn; /* Connection on which flow_mod arrived. */ | |
c84d8691 | 261 | const struct ofp_header *request; |
baae3d02 BP |
262 | }; |
263 | ||
d0918789 | 264 | /* OpenFlow. */ |
39c94593 | 265 | static enum ofperr replace_rule_create(struct ofproto *, |
dd27be82 | 266 | struct ofputil_flow_mod *, |
39c94593 JR |
267 | struct cls_rule *cr, uint8_t table_id, |
268 | struct rule *old_rule, | |
269 | struct rule **new_rule) | |
270 | OVS_REQUIRES(ofproto_mutex); | |
271 | ||
8be00367 JR |
272 | static void replace_rule_start(struct ofproto *, cls_version_t version, |
273 | struct rule *old_rule, struct rule *new_rule, | |
39c94593 | 274 | struct cls_conjunction *, size_t n_conjs) |
dd27be82 | 275 | OVS_REQUIRES(ofproto_mutex); |
39c94593 | 276 | |
6787a49f JR |
277 | static void replace_rule_revert(struct ofproto *, struct rule *old_rule, |
278 | struct rule *new_rule) | |
39c94593 JR |
279 | OVS_REQUIRES(ofproto_mutex); |
280 | ||
281 | static void replace_rule_finish(struct ofproto *, struct ofputil_flow_mod *, | |
282 | const struct flow_mod_requester *, | |
283 | struct rule *old_rule, struct rule *new_rule, | |
284 | struct ovs_list *dead_cookies) | |
dd27be82 | 285 | OVS_REQUIRES(ofproto_mutex); |
39c94593 | 286 | static void delete_flows__(struct rule_collection *, |
9ca4a86f BP |
287 | enum ofp_flow_removed_reason, |
288 | const struct flow_mod_requester *) | |
15aaf599 | 289 | OVS_REQUIRES(ofproto_mutex); |
834fe5cb | 290 | |
c84d8691 JR |
291 | static void send_buffered_packet(const struct flow_mod_requester *, |
292 | uint32_t buffer_id, struct rule *) | |
834fe5cb BP |
293 | OVS_REQUIRES(ofproto_mutex); |
294 | ||
7e9f8266 BP |
295 | static bool ofproto_group_exists__(const struct ofproto *ofproto, |
296 | uint32_t group_id) | |
297 | OVS_REQ_RDLOCK(ofproto->groups_rwlock); | |
84d68566 SH |
298 | static bool ofproto_group_exists(const struct ofproto *ofproto, |
299 | uint32_t group_id) | |
7e9f8266 | 300 | OVS_EXCLUDED(ofproto->groups_rwlock); |
63eded98 BP |
301 | static enum ofperr add_group(struct ofproto *, |
302 | const struct ofputil_group_mod *); | |
b20f4073 | 303 | static void handle_openflow(struct ofconn *, const struct ofpbuf *); |
8be00367 JR |
304 | static enum ofperr ofproto_flow_mod_start(struct ofproto *, |
305 | struct ofproto_flow_mod *) | |
1f42be1c | 306 | OVS_REQUIRES(ofproto_mutex); |
8be00367 JR |
307 | static void ofproto_flow_mod_finish(struct ofproto *, |
308 | struct ofproto_flow_mod *, | |
309 | const struct flow_mod_requester *) | |
1f42be1c | 310 | OVS_REQUIRES(ofproto_mutex); |
baae3d02 | 311 | static enum ofperr handle_flow_mod__(struct ofproto *, |
8be00367 | 312 | struct ofproto_flow_mod *, |
baae3d02 | 313 | const struct flow_mod_requester *) |
15aaf599 | 314 | OVS_EXCLUDED(ofproto_mutex); |
65e0be10 BP |
315 | static void calc_duration(long long int start, long long int now, |
316 | uint32_t *sec, uint32_t *nsec); | |
f29152ca | 317 | |
d0918789 BP |
318 | /* ofproto. */ |
319 | static uint64_t pick_datapath_id(const struct ofproto *); | |
320 | static uint64_t pick_fallback_dpid(void); | |
321 | static void ofproto_destroy__(struct ofproto *); | |
ada3428f | 322 | static void update_mtu(struct ofproto *, struct ofport *); |
6b3f7f02 | 323 | static void meter_delete(struct ofproto *, uint32_t first, uint32_t last); |
062fea06 | 324 | static void meter_insert_rule(struct rule *); |
f29152ca | 325 | |
d0918789 | 326 | /* unixctl. */ |
abe529af | 327 | static void ofproto_unixctl_init(void); |
f29152ca | 328 | |
abe529af BP |
329 | /* All registered ofproto classes, in probe order. */ |
330 | static const struct ofproto_class **ofproto_classes; | |
331 | static size_t n_ofproto_classes; | |
332 | static size_t allocated_ofproto_classes; | |
7aa697dd | 333 | |
15aaf599 BP |
334 | /* Global lock that protects all flow table operations. */ |
335 | struct ovs_mutex ofproto_mutex = OVS_MUTEX_INITIALIZER; | |
abe7b10f | 336 | |
e79a6c83 | 337 | unsigned ofproto_flow_limit = OFPROTO_FLOW_LIMIT_DEFAULT; |
72310b04 | 338 | unsigned ofproto_max_idle = OFPROTO_MAX_IDLE_DEFAULT; |
380f49c4 | 339 | |
e79a6c83 | 340 | size_t n_handlers, n_revalidators; |
f2eee189 | 341 | char *pmd_cpu_mask; |
6567010f | 342 | |
f797957a | 343 | /* Map from datapath name to struct ofproto, for use by unixctl commands. */ |
abe529af | 344 | static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos); |
ebe482fd | 345 | |
e1b1d06a JP |
346 | /* Initial mappings of port to OpenFlow number mappings. */ |
347 | static struct shash init_ofp_ports = SHASH_INITIALIZER(&init_ofp_ports); | |
348 | ||
abe529af | 349 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
f29152ca | 350 | |
40358701 GS |
351 | /* The default value of true waits for flow restore. */ |
352 | static bool flow_restore_wait = true; | |
353 | ||
b0408fca JP |
354 | /* Must be called to initialize the ofproto library. |
355 | * | |
356 | * The caller may pass in 'iface_hints', which contains an shash of | |
357 | * "iface_hint" elements indexed by the interface's name. The provider | |
358 | * may use these hints to describe the startup configuration in order to | |
359 | * reinitialize its state. The caller owns the provided data, so a | |
360 | * provider will make copies of anything required. An ofproto provider | |
361 | * will remove any existing state that is not described by the hint, and | |
362 | * may choose to remove it all. */ | |
363 | void | |
364 | ofproto_init(const struct shash *iface_hints) | |
abe529af | 365 | { |
e1b1d06a | 366 | struct shash_node *node; |
b0408fca | 367 | size_t i; |
f29152ca | 368 | |
b0408fca JP |
369 | ofproto_class_register(&ofproto_dpif_class); |
370 | ||
e1b1d06a JP |
371 | /* Make a local copy, since we don't own 'iface_hints' elements. */ |
372 | SHASH_FOR_EACH(node, iface_hints) { | |
373 | const struct iface_hint *orig_hint = node->data; | |
374 | struct iface_hint *new_hint = xmalloc(sizeof *new_hint); | |
375 | const char *br_type = ofproto_normalize_type(orig_hint->br_type); | |
376 | ||
377 | new_hint->br_name = xstrdup(orig_hint->br_name); | |
378 | new_hint->br_type = xstrdup(br_type); | |
379 | new_hint->ofp_port = orig_hint->ofp_port; | |
380 | ||
381 | shash_add(&init_ofp_ports, node->name, new_hint); | |
382 | } | |
383 | ||
b0408fca | 384 | for (i = 0; i < n_ofproto_classes; i++) { |
e1b1d06a | 385 | ofproto_classes[i]->init(&init_ofp_ports); |
abe529af | 386 | } |
0fc1f5c0 HH |
387 | |
388 | ofproto_unixctl_init(); | |
abe529af | 389 | } |
f29152ca | 390 | |
abe529af BP |
391 | /* 'type' should be a normalized datapath type, as returned by |
392 | * ofproto_normalize_type(). Returns the corresponding ofproto_class | |
393 | * structure, or a null pointer if there is none registered for 'type'. */ | |
394 | static const struct ofproto_class * | |
395 | ofproto_class_find__(const char *type) | |
396 | { | |
397 | size_t i; | |
f29152ca | 398 | |
abe529af BP |
399 | for (i = 0; i < n_ofproto_classes; i++) { |
400 | const struct ofproto_class *class = ofproto_classes[i]; | |
401 | struct sset types; | |
402 | bool found; | |
064af421 | 403 | |
abe529af BP |
404 | sset_init(&types); |
405 | class->enumerate_types(&types); | |
406 | found = sset_contains(&types, type); | |
407 | sset_destroy(&types); | |
bcf84111 | 408 | |
abe529af BP |
409 | if (found) { |
410 | return class; | |
411 | } | |
412 | } | |
413 | VLOG_WARN("unknown datapath type %s", type); | |
414 | return NULL; | |
415 | } | |
064af421 | 416 | |
abe529af BP |
417 | /* Registers a new ofproto class. After successful registration, new ofprotos |
418 | * of that type can be created using ofproto_create(). */ | |
419 | int | |
420 | ofproto_class_register(const struct ofproto_class *new_class) | |
421 | { | |
422 | size_t i; | |
7aa697dd | 423 | |
abe529af BP |
424 | for (i = 0; i < n_ofproto_classes; i++) { |
425 | if (ofproto_classes[i] == new_class) { | |
426 | return EEXIST; | |
427 | } | |
428 | } | |
064af421 | 429 | |
abe529af BP |
430 | if (n_ofproto_classes >= allocated_ofproto_classes) { |
431 | ofproto_classes = x2nrealloc(ofproto_classes, | |
432 | &allocated_ofproto_classes, | |
433 | sizeof *ofproto_classes); | |
434 | } | |
435 | ofproto_classes[n_ofproto_classes++] = new_class; | |
436 | return 0; | |
437 | } | |
064af421 | 438 | |
abe529af BP |
439 | /* Unregisters a datapath provider. 'type' must have been previously |
440 | * registered and not currently be in use by any ofprotos. After | |
441 | * unregistration new datapaths of that type cannot be opened using | |
442 | * ofproto_create(). */ | |
443 | int | |
444 | ofproto_class_unregister(const struct ofproto_class *class) | |
445 | { | |
446 | size_t i; | |
76ce9432 | 447 | |
abe529af BP |
448 | for (i = 0; i < n_ofproto_classes; i++) { |
449 | if (ofproto_classes[i] == class) { | |
450 | for (i++; i < n_ofproto_classes; i++) { | |
451 | ofproto_classes[i - 1] = ofproto_classes[i]; | |
452 | } | |
453 | n_ofproto_classes--; | |
454 | return 0; | |
455 | } | |
456 | } | |
457 | VLOG_WARN("attempted to unregister an ofproto class that is not " | |
458 | "registered"); | |
459 | return EAFNOSUPPORT; | |
460 | } | |
4a4cdb3b | 461 | |
f79e673f BP |
462 | /* Clears 'types' and enumerates all registered ofproto types into it. The |
463 | * caller must first initialize the sset. */ | |
464 | void | |
465 | ofproto_enumerate_types(struct sset *types) | |
466 | { | |
abe529af | 467 | size_t i; |
064af421 | 468 | |
c799c306 | 469 | sset_clear(types); |
abe529af BP |
470 | for (i = 0; i < n_ofproto_classes; i++) { |
471 | ofproto_classes[i]->enumerate_types(types); | |
472 | } | |
f79e673f | 473 | } |
064af421 | 474 | |
f79e673f BP |
475 | /* Returns the fully spelled out name for the given ofproto 'type'. |
476 | * | |
477 | * Normalized type string can be compared with strcmp(). Unnormalized type | |
478 | * string might be the same even if they have different spellings. */ | |
479 | const char * | |
480 | ofproto_normalize_type(const char *type) | |
481 | { | |
abe529af | 482 | return type && type[0] ? type : "system"; |
f79e673f | 483 | } |
064af421 | 484 | |
f79e673f BP |
485 | /* Clears 'names' and enumerates the names of all known created ofprotos with |
486 | * the given 'type'. The caller must first initialize the sset. Returns 0 if | |
487 | * successful, otherwise a positive errno value. | |
488 | * | |
489 | * Some kinds of datapaths might not be practically enumerable. This is not | |
490 | * considered an error. */ | |
491 | int | |
492 | ofproto_enumerate_names(const char *type, struct sset *names) | |
493 | { | |
abe529af BP |
494 | const struct ofproto_class *class = ofproto_class_find__(type); |
495 | return class ? class->enumerate_names(type, names) : EAFNOSUPPORT; | |
239ad7d1 | 496 | } |
7aa697dd | 497 | |
39c94593 JR |
498 | static void |
499 | ofproto_bump_tables_version(struct ofproto *ofproto) | |
500 | { | |
501 | ++ofproto->tables_version; | |
502 | ofproto->ofproto_class->set_tables_version(ofproto, | |
503 | ofproto->tables_version); | |
504 | } | |
505 | ||
064af421 | 506 | int |
abe529af | 507 | ofproto_create(const char *datapath_name, const char *datapath_type, |
064af421 BP |
508 | struct ofproto **ofprotop) |
509 | { | |
abe529af BP |
510 | const struct ofproto_class *class; |
511 | struct ofproto *ofproto; | |
064af421 | 512 | int error; |
c2f0373a | 513 | int i; |
064af421 BP |
514 | |
515 | *ofprotop = NULL; | |
516 | ||
abe529af BP |
517 | datapath_type = ofproto_normalize_type(datapath_type); |
518 | class = ofproto_class_find__(datapath_type); | |
519 | if (!class) { | |
520 | VLOG_WARN("could not create datapath %s of unknown type %s", | |
521 | datapath_name, datapath_type); | |
522 | return EAFNOSUPPORT; | |
064af421 BP |
523 | } |
524 | ||
abe529af BP |
525 | ofproto = class->alloc(); |
526 | if (!ofproto) { | |
527 | VLOG_ERR("failed to allocate datapath %s of type %s", | |
528 | datapath_name, datapath_type); | |
529 | return ENOMEM; | |
530 | } | |
531 | ||
532 | /* Initialize. */ | |
abe7b10f | 533 | ovs_mutex_lock(&ofproto_mutex); |
abe529af BP |
534 | memset(ofproto, 0, sizeof *ofproto); |
535 | ofproto->ofproto_class = class; | |
536 | ofproto->name = xstrdup(datapath_name); | |
537 | ofproto->type = xstrdup(datapath_type); | |
538 | hmap_insert(&all_ofprotos, &ofproto->hmap_node, | |
539 | hash_string(ofproto->name, 0)); | |
540 | ofproto->datapath_id = 0; | |
8402c74b | 541 | ofproto->forward_bpdu = false; |
abe529af | 542 | ofproto->fallback_dpid = pick_fallback_dpid(); |
061bfea4 BP |
543 | ofproto->mfr_desc = NULL; |
544 | ofproto->hw_desc = NULL; | |
545 | ofproto->sw_desc = NULL; | |
546 | ofproto->serial_desc = NULL; | |
547 | ofproto->dp_desc = NULL; | |
ad99e2ed | 548 | ofproto->frag_handling = OFPUTIL_FRAG_NORMAL; |
abe529af | 549 | hmap_init(&ofproto->ports); |
fdcea803 | 550 | hmap_init(&ofproto->ofport_usage); |
abe529af | 551 | shash_init(&ofproto->port_by_name); |
e1b1d06a | 552 | simap_init(&ofproto->ofp_requests); |
430dbb14 | 553 | ofproto->max_ports = ofp_to_u16(OFPP_MAX); |
448c2fa8 | 554 | ofproto->eviction_group_timer = LLONG_MIN; |
6c1491fb BP |
555 | ofproto->tables = NULL; |
556 | ofproto->n_tables = 0; | |
621b8064 | 557 | ofproto->tables_version = CLS_MIN_VERSION; |
98eaac36 | 558 | hindex_init(&ofproto->cookies); |
35f48b8b | 559 | hmap_init(&ofproto->learned_cookies); |
417e7e66 | 560 | ovs_list_init(&ofproto->expirable); |
abe529af | 561 | ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name); |
35412852 | 562 | guarded_list_init(&ofproto->rule_executes); |
52a90c29 BP |
563 | ofproto->vlan_bitmap = NULL; |
564 | ofproto->vlans_changed = false; | |
ada3428f | 565 | ofproto->min_mtu = INT_MAX; |
7395c052 NZ |
566 | ovs_rwlock_init(&ofproto->groups_rwlock); |
567 | hmap_init(&ofproto->groups); | |
abe7b10f | 568 | ovs_mutex_unlock(&ofproto_mutex); |
0ae01c64 | 569 | ofproto->ogf.types = 0xf; |
7cb279c2 SH |
570 | ofproto->ogf.capabilities = OFPGFC_CHAINING | OFPGFC_SELECT_LIVENESS | |
571 | OFPGFC_SELECT_WEIGHT; | |
08d1e234 BP |
572 | for (i = 0; i < 4; i++) { |
573 | ofproto->ogf.max_groups[i] = OFPG_MAX; | |
574 | ofproto->ogf.ofpacts[i] = (UINT64_C(1) << N_OFPACTS) - 1; | |
575 | } | |
9558d2a5 | 576 | tun_metadata_init(); |
abe529af | 577 | |
0f5f95a9 | 578 | error = ofproto->ofproto_class->construct(ofproto); |
19a87e36 | 579 | if (error) { |
abe529af | 580 | VLOG_ERR("failed to open datapath %s: %s", |
10a89ef0 | 581 | datapath_name, ovs_strerror(error)); |
58f19539 | 582 | connmgr_destroy(ofproto->connmgr); |
abe529af | 583 | ofproto_destroy__(ofproto); |
19a87e36 BP |
584 | return error; |
585 | } | |
073e2a6f | 586 | |
c2f0373a | 587 | /* Check that hidden tables, if any, are at the end. */ |
cb22974d | 588 | ovs_assert(ofproto->n_tables); |
c2f0373a BP |
589 | for (i = 0; i + 1 < ofproto->n_tables; i++) { |
590 | enum oftable_flags flags = ofproto->tables[i].flags; | |
591 | enum oftable_flags next_flags = ofproto->tables[i + 1].flags; | |
592 | ||
cb22974d | 593 | ovs_assert(!(flags & OFTABLE_HIDDEN) || next_flags & OFTABLE_HIDDEN); |
c2f0373a | 594 | } |
19a87e36 | 595 | |
abe529af | 596 | ofproto->datapath_id = pick_datapath_id(ofproto); |
abe529af | 597 | init_ports(ofproto); |
7aa697dd | 598 | |
9cae45dc JR |
599 | /* Initialize meters table. */ |
600 | if (ofproto->ofproto_class->meter_get_features) { | |
601 | ofproto->ofproto_class->meter_get_features(ofproto, | |
602 | &ofproto->meter_features); | |
603 | } else { | |
604 | memset(&ofproto->meter_features, 0, sizeof ofproto->meter_features); | |
605 | } | |
606 | ofproto->meters = xzalloc((ofproto->meter_features.max_meters + 1) | |
607 | * sizeof(struct meter *)); | |
608 | ||
621b8064 | 609 | /* Set the initial tables version. */ |
39c94593 | 610 | ofproto_bump_tables_version(ofproto); |
621b8064 | 611 | |
abe529af | 612 | *ofprotop = ofproto; |
064af421 BP |
613 | return 0; |
614 | } | |
615 | ||
91858960 BP |
616 | /* Must be called (only) by an ofproto implementation in its constructor |
617 | * function. See the large comment on 'construct' in struct ofproto_class for | |
618 | * details. */ | |
0f5f95a9 BP |
619 | void |
620 | ofproto_init_tables(struct ofproto *ofproto, int n_tables) | |
621 | { | |
622 | struct oftable *table; | |
623 | ||
cb22974d BP |
624 | ovs_assert(!ofproto->n_tables); |
625 | ovs_assert(n_tables >= 1 && n_tables <= 255); | |
0f5f95a9 BP |
626 | |
627 | ofproto->n_tables = n_tables; | |
628 | ofproto->tables = xmalloc(n_tables * sizeof *ofproto->tables); | |
629 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
630 | oftable_init(table); | |
631 | } | |
632 | } | |
633 | ||
91858960 BP |
634 | /* To be optionally called (only) by an ofproto implementation in its |
635 | * constructor function. See the large comment on 'construct' in struct | |
636 | * ofproto_class for details. | |
637 | * | |
638 | * Sets the maximum number of ports to 'max_ports'. The ofproto generic layer | |
639 | * will then ensure that actions passed into the ofproto implementation will | |
640 | * not refer to OpenFlow ports numbered 'max_ports' or higher. If this | |
641 | * function is not called, there will be no such restriction. | |
642 | * | |
643 | * Reserved ports numbered OFPP_MAX and higher are special and not subject to | |
644 | * the 'max_ports' restriction. */ | |
645 | void | |
430dbb14 | 646 | ofproto_init_max_ports(struct ofproto *ofproto, uint16_t max_ports) |
91858960 | 647 | { |
430dbb14 | 648 | ovs_assert(max_ports <= ofp_to_u16(OFPP_MAX)); |
91858960 BP |
649 | ofproto->max_ports = max_ports; |
650 | } | |
651 | ||
e825ace2 BP |
652 | uint64_t |
653 | ofproto_get_datapath_id(const struct ofproto *ofproto) | |
654 | { | |
655 | return ofproto->datapath_id; | |
656 | } | |
657 | ||
064af421 BP |
658 | void |
659 | ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id) | |
660 | { | |
661 | uint64_t old_dpid = p->datapath_id; | |
fa60c019 | 662 | p->datapath_id = datapath_id ? datapath_id : pick_datapath_id(p); |
064af421 | 663 | if (p->datapath_id != old_dpid) { |
76ce9432 BP |
664 | /* Force all active connections to reconnect, since there is no way to |
665 | * notify a controller that the datapath ID has changed. */ | |
fa05809b | 666 | ofproto_reconnect_controllers(p); |
064af421 BP |
667 | } |
668 | } | |
669 | ||
76ce9432 BP |
670 | void |
671 | ofproto_set_controllers(struct ofproto *p, | |
672 | const struct ofproto_controller *controllers, | |
1d9ffc17 | 673 | size_t n_controllers, uint32_t allowed_versions) |
76ce9432 | 674 | { |
1d9ffc17 SH |
675 | connmgr_set_controllers(p->connmgr, controllers, n_controllers, |
676 | allowed_versions); | |
064af421 BP |
677 | } |
678 | ||
31681a5d JP |
679 | void |
680 | ofproto_set_fail_mode(struct ofproto *p, enum ofproto_fail_mode fail_mode) | |
681 | { | |
19a87e36 | 682 | connmgr_set_fail_mode(p->connmgr, fail_mode); |
31681a5d JP |
683 | } |
684 | ||
fa05809b BP |
685 | /* Drops the connections between 'ofproto' and all of its controllers, forcing |
686 | * them to reconnect. */ | |
687 | void | |
688 | ofproto_reconnect_controllers(struct ofproto *ofproto) | |
689 | { | |
19a87e36 | 690 | connmgr_reconnect(ofproto->connmgr); |
917e50e1 BP |
691 | } |
692 | ||
693 | /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s | |
694 | * in-band control should guarantee access, in the same way that in-band | |
695 | * control guarantees access to OpenFlow controllers. */ | |
696 | void | |
697 | ofproto_set_extra_in_band_remotes(struct ofproto *ofproto, | |
698 | const struct sockaddr_in *extras, size_t n) | |
699 | { | |
19a87e36 | 700 | connmgr_set_extra_in_band_remotes(ofproto->connmgr, extras, n); |
917e50e1 BP |
701 | } |
702 | ||
b1da6250 BP |
703 | /* Sets the OpenFlow queue used by flows set up by in-band control on |
704 | * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control | |
705 | * flows will use the default queue. */ | |
706 | void | |
707 | ofproto_set_in_band_queue(struct ofproto *ofproto, int queue_id) | |
708 | { | |
19a87e36 | 709 | connmgr_set_in_band_queue(ofproto->connmgr, queue_id); |
b1da6250 BP |
710 | } |
711 | ||
084f5290 SH |
712 | /* Sets the number of flows at which eviction from the kernel flow table |
713 | * will occur. */ | |
714 | void | |
e79a6c83 | 715 | ofproto_set_flow_limit(unsigned limit) |
084f5290 | 716 | { |
e79a6c83 | 717 | ofproto_flow_limit = limit; |
084f5290 SH |
718 | } |
719 | ||
72310b04 JS |
720 | /* Sets the maximum idle time for flows in the datapath before they are |
721 | * expired. */ | |
722 | void | |
723 | ofproto_set_max_idle(unsigned max_idle) | |
724 | { | |
725 | ofproto_max_idle = max_idle; | |
726 | } | |
727 | ||
b53055f4 | 728 | /* If forward_bpdu is true, the NORMAL action will forward frames with |
8402c74b SS |
729 | * reserved (e.g. STP) destination Ethernet addresses. if forward_bpdu is false, |
730 | * the NORMAL action will drop these frames. */ | |
731 | void | |
732 | ofproto_set_forward_bpdu(struct ofproto *ofproto, bool forward_bpdu) | |
733 | { | |
734 | bool old_val = ofproto->forward_bpdu; | |
735 | ofproto->forward_bpdu = forward_bpdu; | |
736 | if (old_val != ofproto->forward_bpdu) { | |
737 | if (ofproto->ofproto_class->forward_bpdu_changed) { | |
738 | ofproto->ofproto_class->forward_bpdu_changed(ofproto); | |
739 | } | |
b53055f4 | 740 | } |
8402c74b SS |
741 | } |
742 | ||
e764773c | 743 | /* Sets the MAC aging timeout for the OFPP_NORMAL action on 'ofproto' to |
c4069512 BP |
744 | * 'idle_time', in seconds, and the maximum number of MAC table entries to |
745 | * 'max_entries'. */ | |
e764773c | 746 | void |
c4069512 BP |
747 | ofproto_set_mac_table_config(struct ofproto *ofproto, unsigned idle_time, |
748 | size_t max_entries) | |
e764773c | 749 | { |
c4069512 BP |
750 | if (ofproto->ofproto_class->set_mac_table_config) { |
751 | ofproto->ofproto_class->set_mac_table_config(ofproto, idle_time, | |
752 | max_entries); | |
e764773c BP |
753 | } |
754 | } | |
755 | ||
7c38d0a5 FL |
756 | /* Multicast snooping configuration. */ |
757 | ||
758 | /* Configures multicast snooping on 'ofproto' using the settings | |
759 | * defined in 's'. If 's' is NULL, disables multicast snooping. | |
760 | * | |
761 | * Returns 0 if successful, otherwise a positive errno value. */ | |
762 | int | |
763 | ofproto_set_mcast_snooping(struct ofproto *ofproto, | |
764 | const struct ofproto_mcast_snooping_settings *s) | |
765 | { | |
766 | return (ofproto->ofproto_class->set_mcast_snooping | |
767 | ? ofproto->ofproto_class->set_mcast_snooping(ofproto, s) | |
768 | : EOPNOTSUPP); | |
769 | } | |
770 | ||
8e04a33f | 771 | /* Configures multicast snooping flood settings on 'ofp_port' of 'ofproto'. |
7c38d0a5 FL |
772 | * |
773 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
774 | int | |
8e04a33f FL |
775 | ofproto_port_set_mcast_snooping(struct ofproto *ofproto, void *aux, |
776 | const struct ofproto_mcast_snooping_port_settings *s) | |
7c38d0a5 FL |
777 | { |
778 | return (ofproto->ofproto_class->set_mcast_snooping_port | |
8e04a33f | 779 | ? ofproto->ofproto_class->set_mcast_snooping_port(ofproto, aux, s) |
7c38d0a5 FL |
780 | : EOPNOTSUPP); |
781 | } | |
782 | ||
f2eee189 AW |
783 | void |
784 | ofproto_set_cpu_mask(const char *cmask) | |
785 | { | |
786 | free(pmd_cpu_mask); | |
787 | ||
788 | pmd_cpu_mask = cmask ? xstrdup(cmask) : NULL; | |
789 | } | |
790 | ||
448a4b2f | 791 | void |
30ea0da7 | 792 | ofproto_set_threads(int n_handlers_, int n_revalidators_) |
448a4b2f | 793 | { |
e79a6c83 EJ |
794 | int threads = MAX(count_cpu_cores(), 2); |
795 | ||
30ea0da7 GS |
796 | n_revalidators = MAX(n_revalidators_, 0); |
797 | n_handlers = MAX(n_handlers_, 0); | |
e79a6c83 EJ |
798 | |
799 | if (!n_revalidators) { | |
800 | n_revalidators = n_handlers | |
801 | ? MAX(threads - (int) n_handlers, 1) | |
802 | : threads / 4 + 1; | |
803 | } | |
804 | ||
805 | if (!n_handlers) { | |
806 | n_handlers = MAX(threads - (int) n_revalidators, 1); | |
807 | } | |
448a4b2f AW |
808 | } |
809 | ||
8b6ff729 BP |
810 | void |
811 | ofproto_set_dp_desc(struct ofproto *p, const char *dp_desc) | |
812 | { | |
813 | free(p->dp_desc); | |
814 | p->dp_desc = dp_desc ? xstrdup(dp_desc) : NULL; | |
815 | } | |
816 | ||
064af421 | 817 | int |
81e2083f | 818 | ofproto_set_snoops(struct ofproto *ofproto, const struct sset *snoops) |
064af421 | 819 | { |
19a87e36 | 820 | return connmgr_set_snoops(ofproto->connmgr, snoops); |
064af421 BP |
821 | } |
822 | ||
823 | int | |
0193b2af JG |
824 | ofproto_set_netflow(struct ofproto *ofproto, |
825 | const struct netflow_options *nf_options) | |
064af421 | 826 | { |
abe529af BP |
827 | if (nf_options && sset_is_empty(&nf_options->collectors)) { |
828 | nf_options = NULL; | |
829 | } | |
830 | ||
831 | if (ofproto->ofproto_class->set_netflow) { | |
832 | return ofproto->ofproto_class->set_netflow(ofproto, nf_options); | |
064af421 | 833 | } else { |
abe529af | 834 | return nf_options ? EOPNOTSUPP : 0; |
064af421 BP |
835 | } |
836 | } | |
837 | ||
abe529af | 838 | int |
72b06300 BP |
839 | ofproto_set_sflow(struct ofproto *ofproto, |
840 | const struct ofproto_sflow_options *oso) | |
841 | { | |
abe529af BP |
842 | if (oso && sset_is_empty(&oso->targets)) { |
843 | oso = NULL; | |
844 | } | |
72b06300 | 845 | |
abe529af BP |
846 | if (ofproto->ofproto_class->set_sflow) { |
847 | return ofproto->ofproto_class->set_sflow(ofproto, oso); | |
72b06300 | 848 | } else { |
abe529af | 849 | return oso ? EOPNOTSUPP : 0; |
72b06300 BP |
850 | } |
851 | } | |
29089a54 RL |
852 | |
853 | int | |
854 | ofproto_set_ipfix(struct ofproto *ofproto, | |
855 | const struct ofproto_ipfix_bridge_exporter_options *bo, | |
856 | const struct ofproto_ipfix_flow_exporter_options *fo, | |
857 | size_t n_fo) | |
858 | { | |
859 | if (ofproto->ofproto_class->set_ipfix) { | |
860 | return ofproto->ofproto_class->set_ipfix(ofproto, bo, fo, n_fo); | |
861 | } else { | |
862 | return (bo || fo) ? EOPNOTSUPP : 0; | |
863 | } | |
864 | } | |
40358701 GS |
865 | |
866 | void | |
867 | ofproto_set_flow_restore_wait(bool flow_restore_wait_db) | |
868 | { | |
869 | flow_restore_wait = flow_restore_wait_db; | |
870 | } | |
871 | ||
872 | bool | |
873 | ofproto_get_flow_restore_wait(void) | |
874 | { | |
875 | return flow_restore_wait; | |
876 | } | |
877 | ||
e7934396 | 878 | \f |
21f7563c JP |
879 | /* Spanning Tree Protocol (STP) configuration. */ |
880 | ||
881 | /* Configures STP on 'ofproto' using the settings defined in 's'. If | |
882 | * 's' is NULL, disables STP. | |
883 | * | |
884 | * Returns 0 if successful, otherwise a positive errno value. */ | |
885 | int | |
886 | ofproto_set_stp(struct ofproto *ofproto, | |
887 | const struct ofproto_stp_settings *s) | |
888 | { | |
889 | return (ofproto->ofproto_class->set_stp | |
890 | ? ofproto->ofproto_class->set_stp(ofproto, s) | |
891 | : EOPNOTSUPP); | |
892 | } | |
893 | ||
894 | /* Retrieves STP status of 'ofproto' and stores it in 's'. If the | |
895 | * 'enabled' member of 's' is false, then the other members are not | |
896 | * meaningful. | |
897 | * | |
898 | * Returns 0 if successful, otherwise a positive errno value. */ | |
899 | int | |
900 | ofproto_get_stp_status(struct ofproto *ofproto, | |
901 | struct ofproto_stp_status *s) | |
902 | { | |
903 | return (ofproto->ofproto_class->get_stp_status | |
904 | ? ofproto->ofproto_class->get_stp_status(ofproto, s) | |
905 | : EOPNOTSUPP); | |
906 | } | |
907 | ||
908 | /* Configures STP on 'ofp_port' of 'ofproto' using the settings defined | |
909 | * in 's'. The caller is responsible for assigning STP port numbers | |
910 | * (using the 'port_num' member in the range of 1 through 255, inclusive) | |
911 | * and ensuring there are no duplicates. If the 's' is NULL, then STP | |
912 | * is disabled on the port. | |
913 | * | |
914 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
915 | int | |
4e022ec0 | 916 | ofproto_port_set_stp(struct ofproto *ofproto, ofp_port_t ofp_port, |
21f7563c JP |
917 | const struct ofproto_port_stp_settings *s) |
918 | { | |
919 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
920 | if (!ofport) { | |
921 | VLOG_WARN("%s: cannot configure STP on nonexistent port %"PRIu16, | |
922 | ofproto->name, ofp_port); | |
923 | return ENODEV; | |
924 | } | |
925 | ||
926 | return (ofproto->ofproto_class->set_stp_port | |
927 | ? ofproto->ofproto_class->set_stp_port(ofport, s) | |
928 | : EOPNOTSUPP); | |
929 | } | |
930 | ||
931 | /* Retrieves STP port status of 'ofp_port' on 'ofproto' and stores it in | |
932 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
933 | * are not meaningful. | |
934 | * | |
935 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
936 | int | |
4e022ec0 | 937 | ofproto_port_get_stp_status(struct ofproto *ofproto, ofp_port_t ofp_port, |
21f7563c JP |
938 | struct ofproto_port_stp_status *s) |
939 | { | |
940 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
941 | if (!ofport) { | |
b0a5c43b JP |
942 | VLOG_WARN_RL(&rl, "%s: cannot get STP status on nonexistent " |
943 | "port %"PRIu16, ofproto->name, ofp_port); | |
21f7563c JP |
944 | return ENODEV; |
945 | } | |
946 | ||
947 | return (ofproto->ofproto_class->get_stp_port_status | |
948 | ? ofproto->ofproto_class->get_stp_port_status(ofport, s) | |
949 | : EOPNOTSUPP); | |
950 | } | |
fd28ce3a JS |
951 | |
952 | /* Retrieves STP port statistics of 'ofp_port' on 'ofproto' and stores it in | |
953 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
954 | * are not meaningful. | |
955 | * | |
956 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
957 | int | |
958 | ofproto_port_get_stp_stats(struct ofproto *ofproto, ofp_port_t ofp_port, | |
959 | struct ofproto_port_stp_stats *s) | |
960 | { | |
961 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
962 | if (!ofport) { | |
963 | VLOG_WARN_RL(&rl, "%s: cannot get STP stats on nonexistent " | |
964 | "port %"PRIu16, ofproto->name, ofp_port); | |
965 | return ENODEV; | |
966 | } | |
967 | ||
968 | return (ofproto->ofproto_class->get_stp_port_stats | |
969 | ? ofproto->ofproto_class->get_stp_port_stats(ofport, s) | |
970 | : EOPNOTSUPP); | |
971 | } | |
9efd308e DV |
972 | |
973 | /* Rapid Spanning Tree Protocol (RSTP) configuration. */ | |
974 | ||
975 | /* Configures RSTP on 'ofproto' using the settings defined in 's'. If | |
976 | * 's' is NULL, disables RSTP. | |
977 | * | |
978 | * Returns 0 if successful, otherwise a positive errno value. */ | |
979 | int | |
980 | ofproto_set_rstp(struct ofproto *ofproto, | |
981 | const struct ofproto_rstp_settings *s) | |
982 | { | |
983 | if (!ofproto->ofproto_class->set_rstp) { | |
984 | return EOPNOTSUPP; | |
985 | } | |
986 | ofproto->ofproto_class->set_rstp(ofproto, s); | |
987 | return 0; | |
988 | } | |
989 | ||
990 | /* Retrieves RSTP status of 'ofproto' and stores it in 's'. If the | |
991 | * 'enabled' member of 's' is false, then the other members are not | |
992 | * meaningful. | |
993 | * | |
994 | * Returns 0 if successful, otherwise a positive errno value. */ | |
995 | int | |
996 | ofproto_get_rstp_status(struct ofproto *ofproto, | |
997 | struct ofproto_rstp_status *s) | |
998 | { | |
999 | if (!ofproto->ofproto_class->get_rstp_status) { | |
1000 | return EOPNOTSUPP; | |
1001 | } | |
1002 | ofproto->ofproto_class->get_rstp_status(ofproto, s); | |
1003 | return 0; | |
1004 | } | |
1005 | ||
1006 | /* Configures RSTP on 'ofp_port' of 'ofproto' using the settings defined | |
1007 | * in 's'. The caller is responsible for assigning RSTP port numbers | |
1008 | * (using the 'port_num' member in the range of 1 through 255, inclusive) | |
1009 | * and ensuring there are no duplicates. If the 's' is NULL, then RSTP | |
1010 | * is disabled on the port. | |
1011 | * | |
1012 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
1013 | int | |
1014 | ofproto_port_set_rstp(struct ofproto *ofproto, ofp_port_t ofp_port, | |
1015 | const struct ofproto_port_rstp_settings *s) | |
1016 | { | |
1017 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1018 | if (!ofport) { | |
1019 | VLOG_WARN("%s: cannot configure RSTP on nonexistent port %"PRIu16, | |
1020 | ofproto->name, ofp_port); | |
1021 | return ENODEV; | |
1022 | } | |
1023 | ||
1024 | if (!ofproto->ofproto_class->set_rstp_port) { | |
1025 | return EOPNOTSUPP; | |
1026 | } | |
1027 | ofproto->ofproto_class->set_rstp_port(ofport, s); | |
1028 | return 0; | |
1029 | } | |
1030 | ||
1031 | /* Retrieves RSTP port status of 'ofp_port' on 'ofproto' and stores it in | |
1032 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
1033 | * are not meaningful. | |
1034 | * | |
1035 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
1036 | int | |
1037 | ofproto_port_get_rstp_status(struct ofproto *ofproto, ofp_port_t ofp_port, | |
1038 | struct ofproto_port_rstp_status *s) | |
1039 | { | |
1040 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1041 | if (!ofport) { | |
1042 | VLOG_WARN_RL(&rl, "%s: cannot get RSTP status on nonexistent " | |
1043 | "port %"PRIu16, ofproto->name, ofp_port); | |
1044 | return ENODEV; | |
1045 | } | |
1046 | ||
1047 | if (!ofproto->ofproto_class->get_rstp_port_status) { | |
1048 | return EOPNOTSUPP; | |
1049 | } | |
1050 | ofproto->ofproto_class->get_rstp_port_status(ofport, s); | |
1051 | return 0; | |
1052 | } | |
21f7563c | 1053 | \f |
8b36f51e EJ |
1054 | /* Queue DSCP configuration. */ |
1055 | ||
1056 | /* Registers meta-data associated with the 'n_qdscp' Qualities of Service | |
1057 | * 'queues' attached to 'ofport'. This data is not intended to be sufficient | |
1058 | * to implement QoS. Instead, it is used to implement features which require | |
1059 | * knowledge of what queues exist on a port, and some basic information about | |
1060 | * them. | |
1061 | * | |
1062 | * Returns 0 if successful, otherwise a positive errno value. */ | |
1063 | int | |
4e022ec0 | 1064 | ofproto_port_set_queues(struct ofproto *ofproto, ofp_port_t ofp_port, |
8b36f51e EJ |
1065 | const struct ofproto_port_queue *queues, |
1066 | size_t n_queues) | |
1067 | { | |
1068 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1069 | ||
1070 | if (!ofport) { | |
1071 | VLOG_WARN("%s: cannot set queues on nonexistent port %"PRIu16, | |
1072 | ofproto->name, ofp_port); | |
1073 | return ENODEV; | |
1074 | } | |
1075 | ||
1076 | return (ofproto->ofproto_class->set_queues | |
1077 | ? ofproto->ofproto_class->set_queues(ofport, queues, n_queues) | |
1078 | : EOPNOTSUPP); | |
1079 | } | |
1080 | \f | |
0477baa9 DF |
1081 | /* LLDP configuration. */ |
1082 | void | |
1083 | ofproto_port_set_lldp(struct ofproto *ofproto, | |
1084 | ofp_port_t ofp_port, | |
1085 | const struct smap *cfg) | |
1086 | { | |
1087 | struct ofport *ofport; | |
1088 | int error; | |
1089 | ||
1090 | ofport = ofproto_get_port(ofproto, ofp_port); | |
1091 | if (!ofport) { | |
1092 | VLOG_WARN("%s: cannot configure LLDP on nonexistent port %"PRIu16, | |
1093 | ofproto->name, ofp_port); | |
1094 | return; | |
1095 | } | |
1096 | error = (ofproto->ofproto_class->set_lldp | |
1097 | ? ofproto->ofproto_class->set_lldp(ofport, cfg) | |
1098 | : EOPNOTSUPP); | |
1099 | if (error) { | |
1100 | VLOG_WARN("%s: lldp configuration on port %"PRIu16" (%s) failed (%s)", | |
1101 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
1102 | ovs_strerror(error)); | |
1103 | } | |
1104 | } | |
1105 | ||
1106 | int | |
1107 | ofproto_set_aa(struct ofproto *ofproto, void *aux OVS_UNUSED, | |
1108 | const struct aa_settings *s) | |
1109 | { | |
1110 | if (!ofproto->ofproto_class->set_aa) { | |
1111 | return EOPNOTSUPP; | |
1112 | } | |
1113 | ofproto->ofproto_class->set_aa(ofproto, s); | |
1114 | return 0; | |
1115 | } | |
1116 | ||
1117 | int | |
1118 | ofproto_aa_mapping_register(struct ofproto *ofproto, void *aux, | |
1119 | const struct aa_mapping_settings *s) | |
1120 | { | |
1121 | if (!ofproto->ofproto_class->aa_mapping_set) { | |
1122 | return EOPNOTSUPP; | |
1123 | } | |
1124 | ofproto->ofproto_class->aa_mapping_set(ofproto, aux, s); | |
1125 | return 0; | |
1126 | } | |
1127 | ||
1128 | int | |
1129 | ofproto_aa_mapping_unregister(struct ofproto *ofproto, void *aux) | |
1130 | { | |
1131 | if (!ofproto->ofproto_class->aa_mapping_unset) { | |
1132 | return EOPNOTSUPP; | |
1133 | } | |
1134 | ofproto->ofproto_class->aa_mapping_unset(ofproto, aux); | |
1135 | return 0; | |
1136 | } | |
1137 | ||
1138 | int | |
1139 | ofproto_aa_vlan_get_queued(struct ofproto *ofproto, | |
1140 | struct ovs_list *list) | |
1141 | { | |
1142 | if (!ofproto->ofproto_class->aa_vlan_get_queued) { | |
1143 | return EOPNOTSUPP; | |
1144 | } | |
1145 | ofproto->ofproto_class->aa_vlan_get_queued(ofproto, list); | |
1146 | return 0; | |
1147 | } | |
1148 | ||
1149 | unsigned int | |
1150 | ofproto_aa_vlan_get_queue_size(struct ofproto *ofproto) | |
1151 | { | |
1152 | if (!ofproto->ofproto_class->aa_vlan_get_queue_size) { | |
1153 | return EOPNOTSUPP; | |
1154 | } | |
1155 | return ofproto->ofproto_class->aa_vlan_get_queue_size(ofproto); | |
1156 | } | |
1157 | ||
e7934396 BP |
1158 | /* Connectivity Fault Management configuration. */ |
1159 | ||
892815f5 | 1160 | /* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */ |
e7934396 | 1161 | void |
4e022ec0 | 1162 | ofproto_port_clear_cfm(struct ofproto *ofproto, ofp_port_t ofp_port) |
e7934396 | 1163 | { |
abe529af BP |
1164 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1165 | if (ofport && ofproto->ofproto_class->set_cfm) { | |
a5610457 | 1166 | ofproto->ofproto_class->set_cfm(ofport, NULL); |
e7934396 BP |
1167 | } |
1168 | } | |
72b06300 | 1169 | |
892815f5 | 1170 | /* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes |
93b8df38 EJ |
1171 | * basic configuration from the configuration members in 'cfm', and the remote |
1172 | * maintenance point ID from remote_mpid. Ignores the statistics members of | |
1173 | * 'cfm'. | |
e7934396 | 1174 | * |
892815f5 | 1175 | * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */ |
e7934396 | 1176 | void |
4e022ec0 | 1177 | ofproto_port_set_cfm(struct ofproto *ofproto, ofp_port_t ofp_port, |
a5610457 | 1178 | const struct cfm_settings *s) |
e7934396 BP |
1179 | { |
1180 | struct ofport *ofport; | |
abe529af | 1181 | int error; |
e7934396 | 1182 | |
abe529af | 1183 | ofport = ofproto_get_port(ofproto, ofp_port); |
e7934396 | 1184 | if (!ofport) { |
892815f5 BP |
1185 | VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16, |
1186 | ofproto->name, ofp_port); | |
e7934396 BP |
1187 | return; |
1188 | } | |
1189 | ||
93b8df38 EJ |
1190 | /* XXX: For configuration simplicity, we only support one remote_mpid |
1191 | * outside of the CFM module. It's not clear if this is the correct long | |
1192 | * term solution or not. */ | |
abe529af | 1193 | error = (ofproto->ofproto_class->set_cfm |
a5610457 | 1194 | ? ofproto->ofproto_class->set_cfm(ofport, s) |
abe529af BP |
1195 | : EOPNOTSUPP); |
1196 | if (error) { | |
1197 | VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed (%s)", | |
1198 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
10a89ef0 | 1199 | ovs_strerror(error)); |
e7934396 | 1200 | } |
e7934396 | 1201 | } |
e7934396 | 1202 | |
ccc09689 EJ |
1203 | /* Configures BFD on 'ofp_port' in 'ofproto'. This function has no effect if |
1204 | * 'ofproto' does not have a port 'ofp_port'. */ | |
1205 | void | |
4e022ec0 | 1206 | ofproto_port_set_bfd(struct ofproto *ofproto, ofp_port_t ofp_port, |
ccc09689 EJ |
1207 | const struct smap *cfg) |
1208 | { | |
1209 | struct ofport *ofport; | |
1210 | int error; | |
1211 | ||
1212 | ofport = ofproto_get_port(ofproto, ofp_port); | |
1213 | if (!ofport) { | |
1214 | VLOG_WARN("%s: cannot configure bfd on nonexistent port %"PRIu16, | |
1215 | ofproto->name, ofp_port); | |
e8999bdc | 1216 | return; |
ccc09689 EJ |
1217 | } |
1218 | ||
1219 | error = (ofproto->ofproto_class->set_bfd | |
1220 | ? ofproto->ofproto_class->set_bfd(ofport, cfg) | |
1221 | : EOPNOTSUPP); | |
1222 | if (error) { | |
1223 | VLOG_WARN("%s: bfd configuration on port %"PRIu16" (%s) failed (%s)", | |
1224 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
10a89ef0 | 1225 | ovs_strerror(error)); |
ccc09689 EJ |
1226 | } |
1227 | } | |
1228 | ||
8f5514fe AW |
1229 | /* Checks the status change of BFD on 'ofport'. |
1230 | * | |
1231 | * Returns true if 'ofproto_class' does not support 'bfd_status_changed'. */ | |
1232 | bool | |
1233 | ofproto_port_bfd_status_changed(struct ofproto *ofproto, ofp_port_t ofp_port) | |
1234 | { | |
1235 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1236 | return (ofport && ofproto->ofproto_class->bfd_status_changed | |
1237 | ? ofproto->ofproto_class->bfd_status_changed(ofport) | |
1238 | : true); | |
1239 | } | |
1240 | ||
88bf179a | 1241 | /* Populates 'status' with the status of BFD on 'ofport'. Returns 0 on |
8f5514fe AW |
1242 | * success. Returns a positive errno otherwise. Has no effect if 'ofp_port' |
1243 | * is not an OpenFlow port in 'ofproto'. | |
88bf179a AW |
1244 | * |
1245 | * The caller must provide and own '*status'. */ | |
ccc09689 | 1246 | int |
4e022ec0 | 1247 | ofproto_port_get_bfd_status(struct ofproto *ofproto, ofp_port_t ofp_port, |
ccc09689 EJ |
1248 | struct smap *status) |
1249 | { | |
1250 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1251 | return (ofport && ofproto->ofproto_class->get_bfd_status | |
1252 | ? ofproto->ofproto_class->get_bfd_status(ofport, status) | |
1253 | : EOPNOTSUPP); | |
1254 | } | |
1255 | ||
fa066f01 BP |
1256 | /* Checks the status of LACP negotiation for 'ofp_port' within ofproto. |
1257 | * Returns 1 if LACP partner information for 'ofp_port' is up-to-date, | |
1258 | * 0 if LACP partner information is not current (generally indicating a | |
1259 | * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */ | |
1260 | int | |
4e022ec0 | 1261 | ofproto_port_is_lacp_current(struct ofproto *ofproto, ofp_port_t ofp_port) |
fa066f01 | 1262 | { |
abe529af BP |
1263 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1264 | return (ofport && ofproto->ofproto_class->port_is_lacp_current | |
1265 | ? ofproto->ofproto_class->port_is_lacp_current(ofport) | |
fa066f01 | 1266 | : -1); |
e7934396 | 1267 | } |
50b9699f NM |
1268 | |
1269 | int | |
1270 | ofproto_port_get_lacp_stats(const struct ofport *port, struct lacp_slave_stats *stats) | |
1271 | { | |
1272 | struct ofproto *ofproto = port->ofproto; | |
1273 | int error; | |
1274 | ||
1275 | if (ofproto->ofproto_class->port_get_lacp_stats) { | |
1276 | error = ofproto->ofproto_class->port_get_lacp_stats(port, stats); | |
1277 | } else { | |
1278 | error = EOPNOTSUPP; | |
1279 | } | |
1280 | ||
1281 | return error; | |
1282 | } | |
e7934396 | 1283 | \f |
fa066f01 | 1284 | /* Bundles. */ |
e7934396 | 1285 | |
abe529af BP |
1286 | /* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'. |
1287 | * A bundle is the same concept as a Port in OVSDB, that is, it consists of one | |
1288 | * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN | |
1289 | * configuration plus, if there is more than one slave, a bonding | |
1290 | * configuration. | |
1291 | * | |
1292 | * If 'aux' is already registered then this function updates its configuration | |
1293 | * to 's'. Otherwise, this function registers a new bundle. | |
1294 | * | |
1295 | * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL | |
1296 | * port. */ | |
1297 | int | |
1298 | ofproto_bundle_register(struct ofproto *ofproto, void *aux, | |
1299 | const struct ofproto_bundle_settings *s) | |
fa066f01 | 1300 | { |
abe529af BP |
1301 | return (ofproto->ofproto_class->bundle_set |
1302 | ? ofproto->ofproto_class->bundle_set(ofproto, aux, s) | |
1303 | : EOPNOTSUPP); | |
fa066f01 BP |
1304 | } |
1305 | ||
abe529af BP |
1306 | /* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'. |
1307 | * If no such bundle has been registered, this has no effect. */ | |
1308 | int | |
1309 | ofproto_bundle_unregister(struct ofproto *ofproto, void *aux) | |
e7934396 | 1310 | { |
abe529af | 1311 | return ofproto_bundle_register(ofproto, aux, NULL); |
e7934396 | 1312 | } |
fa066f01 | 1313 | |
e7934396 | 1314 | \f |
abe529af BP |
1315 | /* Registers a mirror associated with client data pointer 'aux' in 'ofproto'. |
1316 | * If 'aux' is already registered then this function updates its configuration | |
c06bba01 | 1317 | * to 's'. Otherwise, this function registers a new mirror. */ |
abe529af BP |
1318 | int |
1319 | ofproto_mirror_register(struct ofproto *ofproto, void *aux, | |
1320 | const struct ofproto_mirror_settings *s) | |
064af421 | 1321 | { |
abe529af BP |
1322 | return (ofproto->ofproto_class->mirror_set |
1323 | ? ofproto->ofproto_class->mirror_set(ofproto, aux, s) | |
1324 | : EOPNOTSUPP); | |
064af421 BP |
1325 | } |
1326 | ||
abe529af BP |
1327 | /* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'. |
1328 | * If no mirror has been registered, this has no effect. */ | |
1329 | int | |
1330 | ofproto_mirror_unregister(struct ofproto *ofproto, void *aux) | |
064af421 | 1331 | { |
abe529af | 1332 | return ofproto_mirror_register(ofproto, aux, NULL); |
064af421 BP |
1333 | } |
1334 | ||
9d24de3b JP |
1335 | /* Retrieves statistics from mirror associated with client data pointer |
1336 | * 'aux' in 'ofproto'. Stores packet and byte counts in 'packets' and | |
1337 | * 'bytes', respectively. If a particular counters is not supported, | |
0477baa9 DF |
1338 | * the appropriate argument is set to UINT64_MAX. |
1339 | */ | |
9d24de3b JP |
1340 | int |
1341 | ofproto_mirror_get_stats(struct ofproto *ofproto, void *aux, | |
1342 | uint64_t *packets, uint64_t *bytes) | |
1343 | { | |
1344 | if (!ofproto->ofproto_class->mirror_get_stats) { | |
1345 | *packets = *bytes = UINT64_MAX; | |
1346 | return EOPNOTSUPP; | |
1347 | } | |
1348 | ||
1349 | return ofproto->ofproto_class->mirror_get_stats(ofproto, aux, | |
1350 | packets, bytes); | |
1351 | } | |
1352 | ||
abe529af BP |
1353 | /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on |
1354 | * which all packets are flooded, instead of using MAC learning. If | |
1355 | * 'flood_vlans' is NULL, then MAC learning applies to all VLANs. | |
1356 | * | |
1357 | * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL | |
1358 | * port. */ | |
1359 | int | |
1360 | ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans) | |
abdfe474 | 1361 | { |
abe529af BP |
1362 | return (ofproto->ofproto_class->set_flood_vlans |
1363 | ? ofproto->ofproto_class->set_flood_vlans(ofproto, flood_vlans) | |
1364 | : EOPNOTSUPP); | |
abdfe474 JP |
1365 | } |
1366 | ||
abe529af BP |
1367 | /* Returns true if 'aux' is a registered bundle that is currently in use as the |
1368 | * output for a mirror. */ | |
1369 | bool | |
b4affc74 | 1370 | ofproto_is_mirror_output_bundle(const struct ofproto *ofproto, void *aux) |
abe529af BP |
1371 | { |
1372 | return (ofproto->ofproto_class->is_mirror_output_bundle | |
1373 | ? ofproto->ofproto_class->is_mirror_output_bundle(ofproto, aux) | |
1374 | : false); | |
1375 | } | |
1376 | \f | |
254750ce BP |
1377 | /* Configuration of OpenFlow tables. */ |
1378 | ||
1379 | /* Returns the number of OpenFlow tables in 'ofproto'. */ | |
1380 | int | |
1381 | ofproto_get_n_tables(const struct ofproto *ofproto) | |
1382 | { | |
1383 | return ofproto->n_tables; | |
1384 | } | |
1385 | ||
adcf00ba AZ |
1386 | /* Returns the number of Controller visible OpenFlow tables |
1387 | * in 'ofproto'. This number will exclude Hidden tables. | |
1388 | * This funtion's return value should be less or equal to that of | |
1389 | * ofproto_get_n_tables() . */ | |
1390 | uint8_t | |
1391 | ofproto_get_n_visible_tables(const struct ofproto *ofproto) | |
1392 | { | |
1393 | uint8_t n = ofproto->n_tables; | |
1394 | ||
1395 | /* Count only non-hidden tables in the number of tables. (Hidden tables, | |
1396 | * if present, are always at the end.) */ | |
1397 | while(n && (ofproto->tables[n - 1].flags & OFTABLE_HIDDEN)) { | |
1398 | n--; | |
1399 | } | |
1400 | ||
1401 | return n; | |
1402 | } | |
1403 | ||
254750ce BP |
1404 | /* Configures the OpenFlow table in 'ofproto' with id 'table_id' with the |
1405 | * settings from 's'. 'table_id' must be in the range 0 through the number of | |
1406 | * OpenFlow tables in 'ofproto' minus 1, inclusive. | |
1407 | * | |
1408 | * For read-only tables, only the name may be configured. */ | |
1409 | void | |
1410 | ofproto_configure_table(struct ofproto *ofproto, int table_id, | |
1411 | const struct ofproto_table_settings *s) | |
1412 | { | |
1413 | struct oftable *table; | |
1414 | ||
cb22974d | 1415 | ovs_assert(table_id >= 0 && table_id < ofproto->n_tables); |
254750ce BP |
1416 | table = &ofproto->tables[table_id]; |
1417 | ||
1418 | oftable_set_name(table, s->name); | |
1419 | ||
1420 | if (table->flags & OFTABLE_READONLY) { | |
1421 | return; | |
1422 | } | |
1423 | ||
f358a2cb JR |
1424 | if (classifier_set_prefix_fields(&table->cls, |
1425 | s->prefix_fields, s->n_prefix_fields)) { | |
1426 | /* XXX: Trigger revalidation. */ | |
1427 | } | |
834fe5cb BP |
1428 | |
1429 | ovs_mutex_lock(&ofproto_mutex); | |
82c22d34 BP |
1430 | unsigned int new_eviction = (s->enable_eviction |
1431 | ? table->eviction | EVICTION_CLIENT | |
1432 | : table->eviction & ~EVICTION_CLIENT); | |
1433 | oftable_configure_eviction(table, new_eviction, s->groups, s->n_groups); | |
7394b8fb | 1434 | table->max_flows = s->max_flows; |
6787a49f | 1435 | evict_rules_from_table(table); |
834fe5cb | 1436 | ovs_mutex_unlock(&ofproto_mutex); |
254750ce BP |
1437 | } |
1438 | \f | |
81e2083f BP |
1439 | bool |
1440 | ofproto_has_snoops(const struct ofproto *ofproto) | |
1441 | { | |
1442 | return connmgr_has_snoops(ofproto->connmgr); | |
1443 | } | |
1444 | ||
064af421 | 1445 | void |
81e2083f | 1446 | ofproto_get_snoops(const struct ofproto *ofproto, struct sset *snoops) |
064af421 | 1447 | { |
19a87e36 | 1448 | connmgr_get_snoops(ofproto->connmgr, snoops); |
064af421 BP |
1449 | } |
1450 | ||
a73fcd71 | 1451 | /* Deletes 'rule' from 'ofproto'. |
8037acb4 | 1452 | * |
b74cb5d8 BP |
1453 | * Within an ofproto implementation, this function allows an ofproto |
1454 | * implementation to destroy any rules that remain when its ->destruct() | |
1455 | * function is called. This function is not suitable for use elsewhere in an | |
1456 | * ofproto implementation. | |
1457 | * | |
b74cb5d8 | 1458 | * This function implements steps 4.4 and 4.5 in the section titled "Rule Life |
8b81d1ef | 1459 | * Cycle" in ofproto-provider.h. */ |
b74cb5d8 | 1460 | void |
8b81d1ef | 1461 | ofproto_rule_delete(struct ofproto *ofproto, struct rule *rule) |
15aaf599 | 1462 | OVS_EXCLUDED(ofproto_mutex) |
7ee20df1 | 1463 | { |
834fe5cb BP |
1464 | /* This skips the ofmonitor and flow-removed notifications because the |
1465 | * switch is being deleted and any OpenFlow channels have been or soon will | |
1466 | * be killed. */ | |
15aaf599 | 1467 | ovs_mutex_lock(&ofproto_mutex); |
39c94593 JR |
1468 | |
1469 | if (!rule->removed) { | |
1470 | /* Make sure there is no postponed removal of the rule. */ | |
1471 | ovs_assert(cls_rule_visible_in_version(&rule->cr, CLS_MAX_VERSION)); | |
1472 | ||
1473 | if (!classifier_remove(&rule->ofproto->tables[rule->table_id].cls, | |
1474 | &rule->cr)) { | |
1475 | OVS_NOT_REACHED(); | |
1476 | } | |
1477 | ofproto_rule_remove__(rule->ofproto, rule); | |
1478 | ofproto->ofproto_class->rule_delete(rule); | |
1479 | ofproto_rule_unref(rule); | |
1480 | } | |
15aaf599 | 1481 | ovs_mutex_unlock(&ofproto_mutex); |
8037acb4 BP |
1482 | } |
1483 | ||
1484 | static void | |
1485 | ofproto_flush__(struct ofproto *ofproto) | |
15aaf599 | 1486 | OVS_EXCLUDED(ofproto_mutex) |
8037acb4 | 1487 | { |
d0918789 | 1488 | struct oftable *table; |
7ee20df1 | 1489 | |
3948503a | 1490 | /* This will flush all datapath flows. */ |
7ee20df1 BP |
1491 | if (ofproto->ofproto_class->flush) { |
1492 | ofproto->ofproto_class->flush(ofproto); | |
1493 | } | |
1494 | ||
3948503a JR |
1495 | /* XXX: There is a small race window here, where new datapath flows can be |
1496 | * created by upcall handlers based on the existing flow table. We can not | |
1497 | * call ofproto class flush while holding 'ofproto_mutex' to prevent this, | |
1498 | * as then we could deadlock on syncing with the handler threads waiting on | |
1499 | * the same mutex. */ | |
1500 | ||
15aaf599 | 1501 | ovs_mutex_lock(&ofproto_mutex); |
b772ded8 | 1502 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
802f84ff | 1503 | struct rule_collection rules; |
78c8df12 | 1504 | struct rule *rule; |
7ee20df1 | 1505 | |
5c67e4af BP |
1506 | if (table->flags & OFTABLE_HIDDEN) { |
1507 | continue; | |
1508 | } | |
1509 | ||
802f84ff JR |
1510 | rule_collection_init(&rules); |
1511 | ||
de4ad4a2 | 1512 | CLS_FOR_EACH (rule, cr, &table->cls) { |
802f84ff | 1513 | rule_collection_add(&rules, rule); |
7ee20df1 | 1514 | } |
802f84ff | 1515 | delete_flows__(&rules, OFPRR_DELETE, NULL); |
7ee20df1 | 1516 | } |
3948503a JR |
1517 | /* XXX: Concurrent handler threads may insert new learned flows based on |
1518 | * learn actions of the now deleted flows right after we release | |
1519 | * 'ofproto_mutex'. */ | |
15aaf599 | 1520 | ovs_mutex_unlock(&ofproto_mutex); |
7ee20df1 BP |
1521 | } |
1522 | ||
7395c052 NZ |
1523 | static void delete_group(struct ofproto *ofproto, uint32_t group_id); |
1524 | ||
abe529af BP |
1525 | static void |
1526 | ofproto_destroy__(struct ofproto *ofproto) | |
15aaf599 | 1527 | OVS_EXCLUDED(ofproto_mutex) |
abe529af | 1528 | { |
d0918789 | 1529 | struct oftable *table; |
6c1491fb | 1530 | |
35412852 | 1531 | destroy_rule_executes(ofproto); |
5c09b672 GS |
1532 | |
1533 | guarded_list_destroy(&ofproto->rule_executes); | |
7395c052 NZ |
1534 | ovs_rwlock_destroy(&ofproto->groups_rwlock); |
1535 | hmap_destroy(&ofproto->groups); | |
1536 | ||
abe529af BP |
1537 | hmap_remove(&all_ofprotos, &ofproto->hmap_node); |
1538 | free(ofproto->name); | |
955a7127 | 1539 | free(ofproto->type); |
abe529af BP |
1540 | free(ofproto->mfr_desc); |
1541 | free(ofproto->hw_desc); | |
1542 | free(ofproto->sw_desc); | |
1543 | free(ofproto->serial_desc); | |
1544 | free(ofproto->dp_desc); | |
abe529af | 1545 | hmap_destroy(&ofproto->ports); |
fdcea803 | 1546 | hmap_destroy(&ofproto->ofport_usage); |
abe529af | 1547 | shash_destroy(&ofproto->port_by_name); |
e1b1d06a | 1548 | simap_destroy(&ofproto->ofp_requests); |
6c1491fb | 1549 | |
b772ded8 | 1550 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
d0918789 | 1551 | oftable_destroy(table); |
6c1491fb BP |
1552 | } |
1553 | free(ofproto->tables); | |
fa066f01 | 1554 | |
1406c79b BP |
1555 | ovs_assert(hindex_is_empty(&ofproto->cookies)); |
1556 | hindex_destroy(&ofproto->cookies); | |
1557 | ||
35f48b8b BP |
1558 | ovs_assert(hmap_is_empty(&ofproto->learned_cookies)); |
1559 | hmap_destroy(&ofproto->learned_cookies); | |
1560 | ||
52a90c29 BP |
1561 | free(ofproto->vlan_bitmap); |
1562 | ||
abe529af BP |
1563 | ofproto->ofproto_class->dealloc(ofproto); |
1564 | } | |
fa066f01 | 1565 | |
39c94593 JR |
1566 | /* Destroying rules is doubly deferred, must have 'ofproto' around for them. |
1567 | * - 1st we defer the removal of the rules from the classifier | |
1568 | * - 2nd we defer the actual destruction of the rules. */ | |
1569 | static void | |
1570 | ofproto_destroy_defer__(struct ofproto *ofproto) | |
1571 | OVS_EXCLUDED(ofproto_mutex) | |
1572 | { | |
1573 | ovsrcu_postpone(ofproto_destroy__, ofproto); | |
1574 | } | |
1575 | ||
064af421 | 1576 | void |
9aad5a5a | 1577 | ofproto_destroy(struct ofproto *p, bool del) |
15aaf599 | 1578 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 1579 | { |
ca0f572c | 1580 | struct ofport *ofport, *next_ofport; |
fdcea803 | 1581 | struct ofport_usage *usage, *next_usage; |
064af421 BP |
1582 | |
1583 | if (!p) { | |
1584 | return; | |
1585 | } | |
1586 | ||
717de9ff JR |
1587 | if (p->meters) { |
1588 | meter_delete(p, 1, p->meter_features.max_meters); | |
1589 | p->meter_features.max_meters = 0; | |
1590 | free(p->meters); | |
1591 | p->meters = NULL; | |
1592 | } | |
1593 | ||
7ee20df1 | 1594 | ofproto_flush__(p); |
4e8e4213 | 1595 | HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) { |
9aad5a5a | 1596 | ofport_destroy(ofport, del); |
064af421 | 1597 | } |
064af421 | 1598 | |
fdcea803 GS |
1599 | HMAP_FOR_EACH_SAFE (usage, next_usage, hmap_node, &p->ofport_usage) { |
1600 | hmap_remove(&p->ofport_usage, &usage->hmap_node); | |
1601 | free(usage); | |
1602 | } | |
1603 | ||
abe529af | 1604 | p->ofproto_class->destruct(p); |
58f19539 DDP |
1605 | |
1606 | /* We should not postpone this because it involves deleting a listening | |
1607 | * socket which we may want to reopen soon. 'connmgr' should not be used | |
1608 | * by other threads */ | |
1609 | connmgr_destroy(p->connmgr); | |
1610 | ||
f416c8d6 | 1611 | /* Destroying rules is deferred, must have 'ofproto' around for them. */ |
39c94593 | 1612 | ovsrcu_postpone(ofproto_destroy_defer__, p); |
064af421 BP |
1613 | } |
1614 | ||
abe529af BP |
1615 | /* Destroys the datapath with the respective 'name' and 'type'. With the Linux |
1616 | * kernel datapath, for example, this destroys the datapath in the kernel, and | |
1617 | * with the netdev-based datapath, it tears down the data structures that | |
1618 | * represent the datapath. | |
1619 | * | |
1620 | * The datapath should not be currently open as an ofproto. */ | |
064af421 | 1621 | int |
abe529af | 1622 | ofproto_delete(const char *name, const char *type) |
064af421 | 1623 | { |
abe529af BP |
1624 | const struct ofproto_class *class = ofproto_class_find__(type); |
1625 | return (!class ? EAFNOSUPPORT | |
1626 | : !class->del ? EACCES | |
1627 | : class->del(type, name)); | |
064af421 BP |
1628 | } |
1629 | ||
e9e28be3 BP |
1630 | static void |
1631 | process_port_change(struct ofproto *ofproto, int error, char *devname) | |
1632 | { | |
1633 | if (error == ENOBUFS) { | |
1634 | reinit_ports(ofproto); | |
1635 | } else if (!error) { | |
1636 | update_port(ofproto, devname); | |
1637 | free(devname); | |
1638 | } | |
1639 | } | |
1640 | ||
11a574a7 JP |
1641 | int |
1642 | ofproto_type_run(const char *datapath_type) | |
1643 | { | |
1644 | const struct ofproto_class *class; | |
1645 | int error; | |
1646 | ||
1647 | datapath_type = ofproto_normalize_type(datapath_type); | |
1648 | class = ofproto_class_find__(datapath_type); | |
1649 | ||
1650 | error = class->type_run ? class->type_run(datapath_type) : 0; | |
1651 | if (error && error != EAGAIN) { | |
1652 | VLOG_ERR_RL(&rl, "%s: type_run failed (%s)", | |
10a89ef0 | 1653 | datapath_type, ovs_strerror(error)); |
11a574a7 JP |
1654 | } |
1655 | return error; | |
1656 | } | |
1657 | ||
11a574a7 JP |
1658 | void |
1659 | ofproto_type_wait(const char *datapath_type) | |
1660 | { | |
1661 | const struct ofproto_class *class; | |
1662 | ||
1663 | datapath_type = ofproto_normalize_type(datapath_type); | |
1664 | class = ofproto_class_find__(datapath_type); | |
1665 | ||
1666 | if (class->type_wait) { | |
1667 | class->type_wait(datapath_type); | |
1668 | } | |
1669 | } | |
1670 | ||
064af421 | 1671 | int |
abe529af | 1672 | ofproto_run(struct ofproto *p) |
064af421 | 1673 | { |
064af421 | 1674 | int error; |
da4a6191 | 1675 | uint64_t new_seq; |
064af421 | 1676 | |
abe529af | 1677 | error = p->ofproto_class->run(p); |
5fcc0d00 | 1678 | if (error && error != EAGAIN) { |
10a89ef0 | 1679 | VLOG_ERR_RL(&rl, "%s: run failed (%s)", p->name, ovs_strerror(error)); |
149f577a JG |
1680 | } |
1681 | ||
35412852 BP |
1682 | run_rule_executes(p); |
1683 | ||
448c2fa8 EJ |
1684 | /* Restore the eviction group heap invariant occasionally. */ |
1685 | if (p->eviction_group_timer < time_msec()) { | |
1686 | size_t i; | |
1687 | ||
1688 | p->eviction_group_timer = time_msec() + 1000; | |
1689 | ||
1690 | for (i = 0; i < p->n_tables; i++) { | |
1691 | struct oftable *table = &p->tables[i]; | |
1692 | struct eviction_group *evg; | |
448c2fa8 EJ |
1693 | struct rule *rule; |
1694 | ||
82c22d34 | 1695 | if (!table->eviction) { |
448c2fa8 EJ |
1696 | continue; |
1697 | } | |
1698 | ||
d79e3d70 | 1699 | if (table->n_flows > 100000) { |
1a9bb326 EJ |
1700 | static struct vlog_rate_limit count_rl = |
1701 | VLOG_RATE_LIMIT_INIT(1, 1); | |
1702 | VLOG_WARN_RL(&count_rl, "Table %"PRIuSIZE" has an excessive" | |
d79e3d70 | 1703 | " number of rules: %d", i, table->n_flows); |
1a9bb326 EJ |
1704 | } |
1705 | ||
15aaf599 | 1706 | ovs_mutex_lock(&ofproto_mutex); |
5f0476ce | 1707 | CLS_FOR_EACH (rule, cr, &table->cls) { |
6d56c1f1 K |
1708 | if (rule->idle_timeout || rule->hard_timeout) { |
1709 | if (!rule->eviction_group) { | |
1710 | eviction_group_add_rule(rule); | |
1711 | } else { | |
1712 | heap_raw_change(&rule->evg_node, | |
1713 | rule_eviction_priority(p, rule)); | |
1714 | } | |
448c2fa8 EJ |
1715 | } |
1716 | } | |
6d56c1f1 K |
1717 | |
1718 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { | |
1719 | heap_rebuild(&evg->rules); | |
1720 | } | |
15aaf599 | 1721 | ovs_mutex_unlock(&ofproto_mutex); |
448c2fa8 EJ |
1722 | } |
1723 | } | |
1724 | ||
5bf0e941 | 1725 | if (p->ofproto_class->port_poll) { |
7436ed80 BP |
1726 | char *devname; |
1727 | ||
5bf0e941 BP |
1728 | while ((error = p->ofproto_class->port_poll(p, &devname)) != EAGAIN) { |
1729 | process_port_change(p, error, devname); | |
064af421 | 1730 | } |
e9e28be3 | 1731 | } |
031d8bff | 1732 | |
da4a6191 JS |
1733 | new_seq = seq_read(connectivity_seq_get()); |
1734 | if (new_seq != p->change_seq) { | |
1735 | struct sset devnames; | |
1736 | const char *devname; | |
1737 | struct ofport *ofport; | |
1738 | ||
1739 | /* Update OpenFlow port status for any port whose netdev has changed. | |
1740 | * | |
1741 | * Refreshing a given 'ofport' can cause an arbitrary ofport to be | |
1742 | * destroyed, so it's not safe to update ports directly from the | |
1743 | * HMAP_FOR_EACH loop, or even to use HMAP_FOR_EACH_SAFE. Instead, we | |
1744 | * need this two-phase approach. */ | |
1745 | sset_init(&devnames); | |
1746 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
61501798 AW |
1747 | uint64_t port_change_seq; |
1748 | ||
1749 | port_change_seq = netdev_get_change_seq(ofport->netdev); | |
1750 | if (ofport->change_seq != port_change_seq) { | |
1751 | ofport->change_seq = port_change_seq; | |
1752 | sset_add(&devnames, netdev_get_name(ofport->netdev)); | |
1753 | } | |
031d8bff | 1754 | } |
da4a6191 JS |
1755 | SSET_FOR_EACH (devname, &devnames) { |
1756 | update_port(p, devname); | |
1757 | } | |
1758 | sset_destroy(&devnames); | |
1759 | ||
1760 | p->change_seq = new_seq; | |
064af421 BP |
1761 | } |
1762 | ||
834fe5cb | 1763 | connmgr_run(p->connmgr, handle_openflow); |
064af421 | 1764 | |
5fcc0d00 BP |
1765 | return error; |
1766 | } | |
1767 | ||
064af421 BP |
1768 | void |
1769 | ofproto_wait(struct ofproto *p) | |
1770 | { | |
abe529af | 1771 | p->ofproto_class->wait(p); |
5bf0e941 BP |
1772 | if (p->ofproto_class->port_poll_wait) { |
1773 | p->ofproto_class->port_poll_wait(p); | |
e7934396 | 1774 | } |
da4a6191 | 1775 | seq_wait(connectivity_seq_get(), p->change_seq); |
834fe5cb | 1776 | connmgr_wait(p->connmgr); |
064af421 BP |
1777 | } |
1778 | ||
064af421 BP |
1779 | bool |
1780 | ofproto_is_alive(const struct ofproto *p) | |
1781 | { | |
19a87e36 | 1782 | return connmgr_has_controllers(p->connmgr); |
064af421 BP |
1783 | } |
1784 | ||
0d085684 BP |
1785 | /* Adds some memory usage statistics for 'ofproto' into 'usage', for use with |
1786 | * memory_report(). */ | |
1787 | void | |
1788 | ofproto_get_memory_usage(const struct ofproto *ofproto, struct simap *usage) | |
1789 | { | |
1790 | const struct oftable *table; | |
1791 | unsigned int n_rules; | |
1792 | ||
1793 | simap_increase(usage, "ports", hmap_count(&ofproto->ports)); | |
15aaf599 | 1794 | |
0d085684 BP |
1795 | n_rules = 0; |
1796 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
d79e3d70 | 1797 | n_rules += table->n_flows; |
0d085684 BP |
1798 | } |
1799 | simap_increase(usage, "rules", n_rules); | |
1800 | ||
1801 | if (ofproto->ofproto_class->get_memory_usage) { | |
1802 | ofproto->ofproto_class->get_memory_usage(ofproto, usage); | |
1803 | } | |
1804 | ||
1805 | connmgr_get_memory_usage(ofproto->connmgr, usage); | |
1806 | } | |
1807 | ||
1c030aa5 EJ |
1808 | void |
1809 | ofproto_type_get_memory_usage(const char *datapath_type, struct simap *usage) | |
1810 | { | |
1811 | const struct ofproto_class *class; | |
1812 | ||
1813 | datapath_type = ofproto_normalize_type(datapath_type); | |
1814 | class = ofproto_class_find__(datapath_type); | |
1815 | ||
1816 | if (class && class->type_get_memory_usage) { | |
1817 | class->type_get_memory_usage(datapath_type, usage); | |
1818 | } | |
1819 | } | |
1820 | ||
bffc0589 | 1821 | void |
2cdcb898 | 1822 | ofproto_get_ofproto_controller_info(const struct ofproto *ofproto, |
bffc0589 AE |
1823 | struct shash *info) |
1824 | { | |
19a87e36 | 1825 | connmgr_get_controller_info(ofproto->connmgr, info); |
bffc0589 AE |
1826 | } |
1827 | ||
1828 | void | |
1829 | ofproto_free_ofproto_controller_info(struct shash *info) | |
1830 | { | |
72ba2ed3 | 1831 | connmgr_free_controller_info(info); |
bffc0589 AE |
1832 | } |
1833 | ||
b5827b24 BP |
1834 | /* Makes a deep copy of 'old' into 'port'. */ |
1835 | void | |
1836 | ofproto_port_clone(struct ofproto_port *port, const struct ofproto_port *old) | |
1837 | { | |
1838 | port->name = xstrdup(old->name); | |
1839 | port->type = xstrdup(old->type); | |
1840 | port->ofp_port = old->ofp_port; | |
1841 | } | |
1842 | ||
1843 | /* Frees memory allocated to members of 'ofproto_port'. | |
3a6ccc8c | 1844 | * |
b5827b24 BP |
1845 | * Do not call this function on an ofproto_port obtained from |
1846 | * ofproto_port_dump_next(): that function retains ownership of the data in the | |
1847 | * ofproto_port. */ | |
1848 | void | |
1849 | ofproto_port_destroy(struct ofproto_port *ofproto_port) | |
1850 | { | |
1851 | free(ofproto_port->name); | |
1852 | free(ofproto_port->type); | |
1853 | } | |
1854 | ||
b5827b24 | 1855 | /* Initializes 'dump' to begin dumping the ports in an ofproto. |
3a6ccc8c | 1856 | * |
b5827b24 BP |
1857 | * This function provides no status indication. An error status for the entire |
1858 | * dump operation is provided when it is completed by calling | |
1859 | * ofproto_port_dump_done(). | |
1860 | */ | |
1861 | void | |
1862 | ofproto_port_dump_start(struct ofproto_port_dump *dump, | |
1863 | const struct ofproto *ofproto) | |
1864 | { | |
abe529af BP |
1865 | dump->ofproto = ofproto; |
1866 | dump->error = ofproto->ofproto_class->port_dump_start(ofproto, | |
1867 | &dump->state); | |
b5827b24 BP |
1868 | } |
1869 | ||
1870 | /* Attempts to retrieve another port from 'dump', which must have been created | |
1871 | * with ofproto_port_dump_start(). On success, stores a new ofproto_port into | |
1872 | * 'port' and returns true. On failure, returns false. | |
1873 | * | |
1874 | * Failure might indicate an actual error or merely that the last port has been | |
1875 | * dumped. An error status for the entire dump operation is provided when it | |
1876 | * is completed by calling ofproto_port_dump_done(). | |
1877 | * | |
1878 | * The ofproto owns the data stored in 'port'. It will remain valid until at | |
1879 | * least the next time 'dump' is passed to ofproto_port_dump_next() or | |
1880 | * ofproto_port_dump_done(). */ | |
1881 | bool | |
1882 | ofproto_port_dump_next(struct ofproto_port_dump *dump, | |
1883 | struct ofproto_port *port) | |
1884 | { | |
abe529af BP |
1885 | const struct ofproto *ofproto = dump->ofproto; |
1886 | ||
1887 | if (dump->error) { | |
1888 | return false; | |
1889 | } | |
b5827b24 | 1890 | |
abe529af BP |
1891 | dump->error = ofproto->ofproto_class->port_dump_next(ofproto, dump->state, |
1892 | port); | |
1893 | if (dump->error) { | |
1894 | ofproto->ofproto_class->port_dump_done(ofproto, dump->state); | |
1895 | return false; | |
b5827b24 | 1896 | } |
abe529af | 1897 | return true; |
b5827b24 BP |
1898 | } |
1899 | ||
1900 | /* Completes port table dump operation 'dump', which must have been created | |
1901 | * with ofproto_port_dump_start(). Returns 0 if the dump operation was | |
1902 | * error-free, otherwise a positive errno value describing the problem. */ | |
3a6ccc8c | 1903 | int |
b5827b24 | 1904 | ofproto_port_dump_done(struct ofproto_port_dump *dump) |
3a6ccc8c | 1905 | { |
abe529af BP |
1906 | const struct ofproto *ofproto = dump->ofproto; |
1907 | if (!dump->error) { | |
1908 | dump->error = ofproto->ofproto_class->port_dump_done(ofproto, | |
1909 | dump->state); | |
1910 | } | |
1911 | return dump->error == EOF ? 0 : dump->error; | |
b5827b24 BP |
1912 | } |
1913 | ||
0aeaabc8 JP |
1914 | /* Returns the type to pass to netdev_open() when a datapath of type |
1915 | * 'datapath_type' has a port of type 'port_type', for a few special | |
1916 | * cases when a netdev type differs from a port type. For example, when | |
1917 | * using the userspace datapath, a port of type "internal" needs to be | |
1918 | * opened as "tap". | |
1919 | * | |
1920 | * Returns either 'type' itself or a string literal, which must not be | |
1921 | * freed. */ | |
1922 | const char * | |
1923 | ofproto_port_open_type(const char *datapath_type, const char *port_type) | |
1924 | { | |
1925 | const struct ofproto_class *class; | |
1926 | ||
1927 | datapath_type = ofproto_normalize_type(datapath_type); | |
1928 | class = ofproto_class_find__(datapath_type); | |
1929 | if (!class) { | |
1930 | return port_type; | |
1931 | } | |
1932 | ||
1933 | return (class->port_open_type | |
1934 | ? class->port_open_type(datapath_type, port_type) | |
1935 | : port_type); | |
1936 | } | |
1937 | ||
81816a5f JP |
1938 | /* Attempts to add 'netdev' as a port on 'ofproto'. If 'ofp_portp' is |
1939 | * non-null and '*ofp_portp' is not OFPP_NONE, attempts to use that as | |
1940 | * the port's OpenFlow port number. | |
1941 | * | |
1942 | * If successful, returns 0 and sets '*ofp_portp' to the new port's | |
1943 | * OpenFlow port number (if 'ofp_portp' is non-null). On failure, | |
1944 | * returns a positive errno value and sets '*ofp_portp' to OFPP_NONE (if | |
1945 | * 'ofp_portp' is non-null). */ | |
b5827b24 BP |
1946 | int |
1947 | ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev, | |
4e022ec0 | 1948 | ofp_port_t *ofp_portp) |
b5827b24 | 1949 | { |
4e022ec0 | 1950 | ofp_port_t ofp_port = ofp_portp ? *ofp_portp : OFPP_NONE; |
3a6ccc8c BP |
1951 | int error; |
1952 | ||
e1b1d06a | 1953 | error = ofproto->ofproto_class->port_add(ofproto, netdev); |
1fa24dea | 1954 | if (!error) { |
e1b1d06a JP |
1955 | const char *netdev_name = netdev_get_name(netdev); |
1956 | ||
4e022ec0 AW |
1957 | simap_put(&ofproto->ofp_requests, netdev_name, |
1958 | ofp_to_u16(ofp_port)); | |
01c77073 | 1959 | error = update_port(ofproto, netdev_name); |
1fa24dea | 1960 | } |
b5827b24 | 1961 | if (ofp_portp) { |
17f69db5 BP |
1962 | *ofp_portp = OFPP_NONE; |
1963 | if (!error) { | |
1964 | struct ofproto_port ofproto_port; | |
1965 | ||
1966 | error = ofproto_port_query_by_name(ofproto, | |
1967 | netdev_get_name(netdev), | |
1968 | &ofproto_port); | |
1969 | if (!error) { | |
1970 | *ofp_portp = ofproto_port.ofp_port; | |
1971 | ofproto_port_destroy(&ofproto_port); | |
1972 | } | |
1973 | } | |
3a6ccc8c BP |
1974 | } |
1975 | return error; | |
1976 | } | |
1977 | ||
b5827b24 BP |
1978 | /* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and |
1979 | * initializes '*port' appropriately; on failure, returns a positive errno | |
1980 | * value. | |
1981 | * | |
abe529af | 1982 | * The caller owns the data in 'ofproto_port' and must free it with |
b5827b24 BP |
1983 | * ofproto_port_destroy() when it is no longer needed. */ |
1984 | int | |
1985 | ofproto_port_query_by_name(const struct ofproto *ofproto, const char *devname, | |
1986 | struct ofproto_port *port) | |
a4e2e1f2 | 1987 | { |
b5827b24 BP |
1988 | int error; |
1989 | ||
abe529af BP |
1990 | error = ofproto->ofproto_class->port_query_by_name(ofproto, devname, port); |
1991 | if (error) { | |
1992 | memset(port, 0, sizeof *port); | |
b5827b24 BP |
1993 | } |
1994 | return error; | |
a4e2e1f2 EJ |
1995 | } |
1996 | ||
b5827b24 | 1997 | /* Deletes port number 'ofp_port' from the datapath for 'ofproto'. |
3a6ccc8c | 1998 | * Returns 0 if successful, otherwise a positive errno. */ |
064af421 | 1999 | int |
4e022ec0 | 2000 | ofproto_port_del(struct ofproto *ofproto, ofp_port_t ofp_port) |
064af421 | 2001 | { |
abe529af | 2002 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1264ec95 | 2003 | const char *name = ofport ? netdev_get_name(ofport->netdev) : "<unknown>"; |
e1b1d06a | 2004 | struct simap_node *ofp_request_node; |
3cf10406 | 2005 | int error; |
cdee00fd | 2006 | |
e1b1d06a JP |
2007 | ofp_request_node = simap_find(&ofproto->ofp_requests, name); |
2008 | if (ofp_request_node) { | |
2009 | simap_delete(&ofproto->ofp_requests, ofp_request_node); | |
2010 | } | |
2011 | ||
abe529af | 2012 | error = ofproto->ofproto_class->port_del(ofproto, ofp_port); |
892815f5 | 2013 | if (!error && ofport) { |
1264ec95 BP |
2014 | /* 'name' is the netdev's name and update_port() is going to close the |
2015 | * netdev. Just in case update_port() refers to 'name' after it | |
3a6ccc8c BP |
2016 | * destroys 'ofport', make a copy of it around the update_port() |
2017 | * call. */ | |
2018 | char *devname = xstrdup(name); | |
2019 | update_port(ofproto, devname); | |
2020 | free(devname); | |
3cf10406 BP |
2021 | } |
2022 | return error; | |
064af421 BP |
2023 | } |
2024 | ||
276f6518 SH |
2025 | static void |
2026 | flow_mod_init(struct ofputil_flow_mod *fm, | |
eb391b76 | 2027 | const struct match *match, int priority, |
276f6518 SH |
2028 | const struct ofpact *ofpacts, size_t ofpacts_len, |
2029 | enum ofp_flow_mod_command command) | |
2030 | { | |
39cc5c4a BP |
2031 | *fm = (struct ofputil_flow_mod) { |
2032 | .match = *match, | |
2033 | .priority = priority, | |
2034 | .table_id = 0, | |
2035 | .command = command, | |
2036 | .buffer_id = UINT32_MAX, | |
2037 | .out_port = OFPP_ANY, | |
2038 | .out_group = OFPG_ANY, | |
2039 | .ofpacts = CONST_CAST(struct ofpact *, ofpacts), | |
2040 | .ofpacts_len = ofpacts_len, | |
2041 | .delete_reason = OFPRR_DELETE, | |
2042 | }; | |
276f6518 SH |
2043 | } |
2044 | ||
97f63e57 BP |
2045 | static int |
2046 | simple_flow_mod(struct ofproto *ofproto, | |
eb391b76 | 2047 | const struct match *match, int priority, |
97f63e57 BP |
2048 | const struct ofpact *ofpacts, size_t ofpacts_len, |
2049 | enum ofp_flow_mod_command command) | |
2050 | { | |
8be00367 | 2051 | struct ofproto_flow_mod ofm; |
97f63e57 | 2052 | |
8be00367 | 2053 | flow_mod_init(&ofm.fm, match, priority, ofpacts, ofpacts_len, command); |
15aaf599 | 2054 | |
8be00367 | 2055 | return handle_flow_mod__(ofproto, &ofm, NULL); |
97f63e57 BP |
2056 | } |
2057 | ||
6c1491fb | 2058 | /* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and |
fa8b054f BP |
2059 | * performs the 'n_actions' actions in 'actions'. The new flow will not |
2060 | * timeout. | |
2061 | * | |
2062 | * If cls_rule->priority is in the range of priorities supported by OpenFlow | |
2063 | * (0...65535, inclusive) then the flow will be visible to OpenFlow | |
2064 | * controllers; otherwise, it will be hidden. | |
2065 | * | |
f25d0cf3 | 2066 | * The caller retains ownership of 'cls_rule' and 'ofpacts'. |
6c1491fb BP |
2067 | * |
2068 | * This is a helper function for in-band control and fail-open. */ | |
064af421 | 2069 | void |
81a76618 | 2070 | ofproto_add_flow(struct ofproto *ofproto, const struct match *match, |
eb391b76 | 2071 | int priority, |
f25d0cf3 | 2072 | const struct ofpact *ofpacts, size_t ofpacts_len) |
15aaf599 | 2073 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 2074 | { |
7ee20df1 | 2075 | const struct rule *rule; |
6f00e29b | 2076 | bool must_add; |
7ee20df1 | 2077 | |
97f63e57 BP |
2078 | /* First do a cheap check whether the rule we're looking for already exists |
2079 | * with the actions that we want. If it does, then we're done. */ | |
81a76618 | 2080 | rule = rule_from_cls_rule(classifier_find_match_exactly( |
2b7b1427 JR |
2081 | &ofproto->tables[0].cls, match, priority, |
2082 | CLS_MAX_VERSION)); | |
6f00e29b | 2083 | if (rule) { |
dc723c44 | 2084 | const struct rule_actions *actions = rule_get_actions(rule); |
06a0f3e2 | 2085 | must_add = !ofpacts_equal(actions->ofpacts, actions->ofpacts_len, |
6f00e29b | 2086 | ofpacts, ofpacts_len); |
6f00e29b BP |
2087 | } else { |
2088 | must_add = true; | |
2089 | } | |
97f63e57 BP |
2090 | |
2091 | /* If there's no such rule or the rule doesn't have the actions we want, | |
2092 | * fall back to a executing a full flow mod. We can't optimize this at | |
2093 | * all because we didn't take enough locks above to ensure that the flow | |
2094 | * table didn't already change beneath us. */ | |
6f00e29b | 2095 | if (must_add) { |
97f63e57 BP |
2096 | simple_flow_mod(ofproto, match, priority, ofpacts, ofpacts_len, |
2097 | OFPFC_MODIFY_STRICT); | |
7ee20df1 | 2098 | } |
064af421 BP |
2099 | } |
2100 | ||
d51c8b71 JR |
2101 | /* Executes the flow modification specified in 'fm'. Returns 0 on success, or |
2102 | * an OFPERR_* OpenFlow error code on failure. | |
75a75043 | 2103 | * |
1b63b91e BP |
2104 | * This is a helper function for in-band control and fail-open and the "learn" |
2105 | * action. */ | |
d51c8b71 | 2106 | enum ofperr |
8be00367 | 2107 | ofproto_flow_mod(struct ofproto *ofproto, struct ofproto_flow_mod *ofm) |
15aaf599 | 2108 | OVS_EXCLUDED(ofproto_mutex) |
75a75043 | 2109 | { |
8be00367 JR |
2110 | struct ofputil_flow_mod *fm = &ofm->fm; |
2111 | ||
b90d6ee5 JR |
2112 | /* Optimize for the most common case of a repeated learn action. |
2113 | * If an identical flow already exists we only need to update its | |
2114 | * 'modified' time. */ | |
2115 | if (fm->command == OFPFC_MODIFY_STRICT && fm->table_id != OFPTT_ALL | |
2116 | && !(fm->flags & OFPUTIL_FF_RESET_COUNTS)) { | |
2117 | struct oftable *table = &ofproto->tables[fm->table_id]; | |
b90d6ee5 JR |
2118 | struct rule *rule; |
2119 | bool done = false; | |
2120 | ||
2b7b1427 | 2121 | rule = rule_from_cls_rule(classifier_find_match_exactly( |
39c94593 JR |
2122 | &table->cls, &fm->match, fm->priority, |
2123 | CLS_MAX_VERSION)); | |
b90d6ee5 JR |
2124 | if (rule) { |
2125 | /* Reading many of the rule fields and writing on 'modified' | |
2126 | * requires the rule->mutex. Also, rule->actions may change | |
2127 | * if rule->mutex is not held. */ | |
06a0f3e2 BP |
2128 | const struct rule_actions *actions; |
2129 | ||
b90d6ee5 | 2130 | ovs_mutex_lock(&rule->mutex); |
06a0f3e2 | 2131 | actions = rule_get_actions(rule); |
b90d6ee5 JR |
2132 | if (rule->idle_timeout == fm->idle_timeout |
2133 | && rule->hard_timeout == fm->hard_timeout | |
ca26eb44 | 2134 | && rule->importance == fm->importance |
b90d6ee5 JR |
2135 | && rule->flags == (fm->flags & OFPUTIL_FF_STATE) |
2136 | && (!fm->modify_cookie || (fm->new_cookie == rule->flow_cookie)) | |
2137 | && ofpacts_equal(fm->ofpacts, fm->ofpacts_len, | |
06a0f3e2 | 2138 | actions->ofpacts, actions->ofpacts_len)) { |
b90d6ee5 JR |
2139 | /* Rule already exists and need not change, only update the |
2140 | modified timestamp. */ | |
2141 | rule->modified = time_msec(); | |
2142 | done = true; | |
2143 | } | |
2144 | ovs_mutex_unlock(&rule->mutex); | |
2145 | } | |
b90d6ee5 JR |
2146 | |
2147 | if (done) { | |
2148 | return 0; | |
2149 | } | |
2150 | } | |
2151 | ||
8be00367 | 2152 | return handle_flow_mod__(ofproto, ofm, NULL); |
75a75043 BP |
2153 | } |
2154 | ||
6c1491fb BP |
2155 | /* Searches for a rule with matching criteria exactly equal to 'target' in |
2156 | * ofproto's table 0 and, if it finds one, deletes it. | |
2157 | * | |
2158 | * This is a helper function for in-band control and fail-open. */ | |
b20f4073 | 2159 | void |
81a76618 | 2160 | ofproto_delete_flow(struct ofproto *ofproto, |
eb391b76 | 2161 | const struct match *target, int priority) |
15aaf599 | 2162 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 2163 | { |
8037acb4 | 2164 | struct classifier *cls = &ofproto->tables[0].cls; |
064af421 BP |
2165 | struct rule *rule; |
2166 | ||
97f63e57 BP |
2167 | /* First do a cheap check whether the rule we're looking for has already |
2168 | * been deleted. If so, then we're done. */ | |
39c94593 JR |
2169 | rule = rule_from_cls_rule(classifier_find_match_exactly( |
2170 | cls, target, priority, CLS_MAX_VERSION)); | |
834fe5cb BP |
2171 | if (!rule) { |
2172 | return; | |
bcf84111 | 2173 | } |
834fe5cb BP |
2174 | |
2175 | /* Execute a flow mod. We can't optimize this at all because we didn't | |
2176 | * take enough locks above to ensure that the flow table didn't already | |
2177 | * change beneath us. */ | |
2178 | simple_flow_mod(ofproto, target, priority, NULL, 0, OFPFC_DELETE_STRICT); | |
142e1f5c BP |
2179 | } |
2180 | ||
834fe5cb BP |
2181 | /* Delete all of the flows from all of ofproto's flow tables, then reintroduce |
2182 | * the flows required by in-band control and fail-open. */ | |
142e1f5c BP |
2183 | void |
2184 | ofproto_flush_flows(struct ofproto *ofproto) | |
2185 | { | |
7ee20df1 | 2186 | COVERAGE_INC(ofproto_flush); |
834fe5cb BP |
2187 | ofproto_flush__(ofproto); |
2188 | connmgr_flushed(ofproto->connmgr); | |
064af421 BP |
2189 | } |
2190 | \f | |
2191 | static void | |
2192 | reinit_ports(struct ofproto *p) | |
2193 | { | |
abe529af | 2194 | struct ofproto_port_dump dump; |
b3c01ed3 | 2195 | struct sset devnames; |
064af421 | 2196 | struct ofport *ofport; |
abe529af | 2197 | struct ofproto_port ofproto_port; |
b3c01ed3 | 2198 | const char *devname; |
064af421 | 2199 | |
898bf89d JP |
2200 | COVERAGE_INC(ofproto_reinit_ports); |
2201 | ||
b3c01ed3 | 2202 | sset_init(&devnames); |
4e8e4213 | 2203 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { |
1264ec95 | 2204 | sset_add(&devnames, netdev_get_name(ofport->netdev)); |
064af421 | 2205 | } |
abe529af BP |
2206 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { |
2207 | sset_add(&devnames, ofproto_port.name); | |
064af421 | 2208 | } |
064af421 | 2209 | |
b3c01ed3 BP |
2210 | SSET_FOR_EACH (devname, &devnames) { |
2211 | update_port(p, devname); | |
064af421 | 2212 | } |
b3c01ed3 | 2213 | sset_destroy(&devnames); |
064af421 BP |
2214 | } |
2215 | ||
4e022ec0 | 2216 | static ofp_port_t |
e1b1d06a JP |
2217 | alloc_ofp_port(struct ofproto *ofproto, const char *netdev_name) |
2218 | { | |
4e022ec0 | 2219 | uint16_t port_idx; |
e1b1d06a | 2220 | |
4e022ec0 | 2221 | port_idx = simap_get(&ofproto->ofp_requests, netdev_name); |
430dbb14 | 2222 | port_idx = port_idx ? port_idx : UINT16_MAX; |
4e022ec0 | 2223 | |
430dbb14 | 2224 | if (port_idx >= ofproto->max_ports |
fdcea803 GS |
2225 | || ofport_get_usage(ofproto, u16_to_ofp(port_idx)) == LLONG_MAX) { |
2226 | uint16_t lru_ofport = 0, end_port_no = ofproto->alloc_port_no; | |
2227 | long long int last_used_at, lru = LLONG_MAX; | |
e1b1d06a | 2228 | |
e1b1d06a JP |
2229 | /* Search for a free OpenFlow port number. We try not to |
2230 | * immediately reuse them to prevent problems due to old | |
484c8355 BP |
2231 | * flows. |
2232 | * | |
2233 | * We limit the automatically assigned port numbers to the lower half | |
2234 | * of the port range, to reserve the upper half for assignment by | |
2235 | * controllers. */ | |
6033d9d9 | 2236 | for (;;) { |
484c8355 | 2237 | if (++ofproto->alloc_port_no >= MIN(ofproto->max_ports, 32768)) { |
fdcea803 | 2238 | ofproto->alloc_port_no = 1; |
6033d9d9 | 2239 | } |
fdcea803 GS |
2240 | last_used_at = ofport_get_usage(ofproto, |
2241 | u16_to_ofp(ofproto->alloc_port_no)); | |
2242 | if (!last_used_at) { | |
430dbb14 | 2243 | port_idx = ofproto->alloc_port_no; |
6033d9d9 | 2244 | break; |
865b26a4 GS |
2245 | } else if ( last_used_at < time_msec() - 60*60*1000) { |
2246 | /* If the port with ofport 'ofproto->alloc_port_no' was deleted | |
2247 | * more than an hour ago, consider it usable. */ | |
2248 | ofport_remove_usage(ofproto, | |
2249 | u16_to_ofp(ofproto->alloc_port_no)); | |
2250 | port_idx = ofproto->alloc_port_no; | |
2251 | break; | |
fdcea803 GS |
2252 | } else if (last_used_at < lru) { |
2253 | lru = last_used_at; | |
2254 | lru_ofport = ofproto->alloc_port_no; | |
e1b1d06a | 2255 | } |
fdcea803 | 2256 | |
430dbb14 | 2257 | if (ofproto->alloc_port_no == end_port_no) { |
fdcea803 GS |
2258 | if (lru_ofport) { |
2259 | port_idx = lru_ofport; | |
2260 | break; | |
2261 | } | |
6033d9d9 | 2262 | return OFPP_NONE; |
e1b1d06a JP |
2263 | } |
2264 | } | |
2265 | } | |
fdcea803 | 2266 | ofport_set_usage(ofproto, u16_to_ofp(port_idx), LLONG_MAX); |
4e022ec0 | 2267 | return u16_to_ofp(port_idx); |
e1b1d06a JP |
2268 | } |
2269 | ||
2270 | static void | |
fdcea803 | 2271 | dealloc_ofp_port(struct ofproto *ofproto, ofp_port_t ofp_port) |
e1b1d06a | 2272 | { |
430dbb14 | 2273 | if (ofp_to_u16(ofp_port) < ofproto->max_ports) { |
fdcea803 | 2274 | ofport_set_usage(ofproto, ofp_port, time_msec()); |
40fa9417 | 2275 | } |
e1b1d06a JP |
2276 | } |
2277 | ||
fbfa2911 BP |
2278 | /* Opens and returns a netdev for 'ofproto_port' in 'ofproto', or a null |
2279 | * pointer if the netdev cannot be opened. On success, also fills in | |
d7d92203 | 2280 | * '*pp'. */ |
b33951b8 | 2281 | static struct netdev * |
e1b1d06a JP |
2282 | ofport_open(struct ofproto *ofproto, |
2283 | struct ofproto_port *ofproto_port, | |
9e1fd49b | 2284 | struct ofputil_phy_port *pp) |
064af421 BP |
2285 | { |
2286 | enum netdev_flags flags; | |
064af421 | 2287 | struct netdev *netdev; |
064af421 BP |
2288 | int error; |
2289 | ||
18812dff | 2290 | error = netdev_open(ofproto_port->name, ofproto_port->type, &netdev); |
064af421 | 2291 | if (error) { |
fbfa2911 | 2292 | VLOG_WARN_RL(&rl, "%s: ignoring port %s (%"PRIu16") because netdev %s " |
064af421 | 2293 | "cannot be opened (%s)", |
fbfa2911 | 2294 | ofproto->name, |
abe529af | 2295 | ofproto_port->name, ofproto_port->ofp_port, |
10a89ef0 | 2296 | ofproto_port->name, ovs_strerror(error)); |
064af421 BP |
2297 | return NULL; |
2298 | } | |
2299 | ||
e1b1d06a JP |
2300 | if (ofproto_port->ofp_port == OFPP_NONE) { |
2301 | if (!strcmp(ofproto->name, ofproto_port->name)) { | |
2302 | ofproto_port->ofp_port = OFPP_LOCAL; | |
2303 | } else { | |
2304 | ofproto_port->ofp_port = alloc_ofp_port(ofproto, | |
2305 | ofproto_port->name); | |
2306 | } | |
2307 | } | |
9e1fd49b | 2308 | pp->port_no = ofproto_port->ofp_port; |
74ff3298 | 2309 | netdev_get_etheraddr(netdev, &pp->hw_addr); |
9e1fd49b | 2310 | ovs_strlcpy(pp->name, ofproto_port->name, sizeof pp->name); |
064af421 | 2311 | netdev_get_flags(netdev, &flags); |
9e1fd49b BP |
2312 | pp->config = flags & NETDEV_UP ? 0 : OFPUTIL_PC_PORT_DOWN; |
2313 | pp->state = netdev_get_carrier(netdev) ? 0 : OFPUTIL_PS_LINK_DOWN; | |
2314 | netdev_get_features(netdev, &pp->curr, &pp->advertised, | |
2315 | &pp->supported, &pp->peer); | |
cd65125d BP |
2316 | pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000; |
2317 | pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000; | |
118c4676 | 2318 | |
b33951b8 | 2319 | return netdev; |
064af421 BP |
2320 | } |
2321 | ||
b33951b8 | 2322 | /* Returns true if most fields of 'a' and 'b' are equal. Differences in name, |
d7d92203 | 2323 | * port number, and 'config' bits other than OFPUTIL_PC_PORT_DOWN are |
b33951b8 BP |
2324 | * disregarded. */ |
2325 | static bool | |
9e1fd49b BP |
2326 | ofport_equal(const struct ofputil_phy_port *a, |
2327 | const struct ofputil_phy_port *b) | |
064af421 | 2328 | { |
9e1fd49b | 2329 | return (eth_addr_equals(a->hw_addr, b->hw_addr) |
064af421 | 2330 | && a->state == b->state |
9e1fd49b | 2331 | && !((a->config ^ b->config) & OFPUTIL_PC_PORT_DOWN) |
064af421 BP |
2332 | && a->curr == b->curr |
2333 | && a->advertised == b->advertised | |
2334 | && a->supported == b->supported | |
9e1fd49b BP |
2335 | && a->peer == b->peer |
2336 | && a->curr_speed == b->curr_speed | |
2337 | && a->max_speed == b->max_speed); | |
064af421 BP |
2338 | } |
2339 | ||
b33951b8 BP |
2340 | /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'. |
2341 | * The caller must ensure that 'p' does not have a conflicting ofport (that is, | |
2342 | * one with the same name or port number). */ | |
01c77073 | 2343 | static int |
b33951b8 | 2344 | ofport_install(struct ofproto *p, |
9e1fd49b | 2345 | struct netdev *netdev, const struct ofputil_phy_port *pp) |
064af421 | 2346 | { |
b33951b8 BP |
2347 | const char *netdev_name = netdev_get_name(netdev); |
2348 | struct ofport *ofport; | |
abe529af | 2349 | int error; |
72b06300 | 2350 | |
b33951b8 | 2351 | /* Create ofport. */ |
abe529af BP |
2352 | ofport = p->ofproto_class->port_alloc(); |
2353 | if (!ofport) { | |
2354 | error = ENOMEM; | |
2355 | goto error; | |
2356 | } | |
0f7d71a5 | 2357 | ofport->ofproto = p; |
b33951b8 | 2358 | ofport->netdev = netdev; |
61501798 | 2359 | ofport->change_seq = netdev_get_change_seq(netdev); |
9e1fd49b BP |
2360 | ofport->pp = *pp; |
2361 | ofport->ofp_port = pp->port_no; | |
65e0be10 | 2362 | ofport->created = time_msec(); |
b33951b8 BP |
2363 | |
2364 | /* Add port to 'p'. */ | |
4e022ec0 | 2365 | hmap_insert(&p->ports, &ofport->hmap_node, |
f9c0c3ec | 2366 | hash_ofp_port(ofport->ofp_port)); |
72b06300 | 2367 | shash_add(&p->port_by_name, netdev_name, ofport); |
abe529af | 2368 | |
ada3428f | 2369 | update_mtu(p, ofport); |
9197df76 | 2370 | |
abe529af BP |
2371 | /* Let the ofproto_class initialize its private data. */ |
2372 | error = p->ofproto_class->port_construct(ofport); | |
2373 | if (error) { | |
2374 | goto error; | |
2375 | } | |
2a6f78e0 | 2376 | connmgr_send_port_status(p->connmgr, NULL, pp, OFPPR_ADD); |
01c77073 | 2377 | return 0; |
abe529af BP |
2378 | |
2379 | error: | |
2380 | VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)", | |
10a89ef0 | 2381 | p->name, netdev_name, ovs_strerror(error)); |
abe529af BP |
2382 | if (ofport) { |
2383 | ofport_destroy__(ofport); | |
2384 | } else { | |
2385 | netdev_close(netdev); | |
72b06300 | 2386 | } |
01c77073 | 2387 | return error; |
064af421 BP |
2388 | } |
2389 | ||
b33951b8 | 2390 | /* Removes 'ofport' from 'p' and destroys it. */ |
064af421 | 2391 | static void |
0f7d71a5 | 2392 | ofport_remove(struct ofport *ofport) |
064af421 | 2393 | { |
2a6f78e0 | 2394 | connmgr_send_port_status(ofport->ofproto->connmgr, NULL, &ofport->pp, |
fa066f01 | 2395 | OFPPR_DELETE); |
9aad5a5a | 2396 | ofport_destroy(ofport, true); |
b33951b8 BP |
2397 | } |
2398 | ||
2399 | /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and | |
2400 | * destroys it. */ | |
2401 | static void | |
2402 | ofport_remove_with_name(struct ofproto *ofproto, const char *name) | |
2403 | { | |
2404 | struct ofport *port = shash_find_data(&ofproto->port_by_name, name); | |
2405 | if (port) { | |
0f7d71a5 | 2406 | ofport_remove(port); |
b33951b8 BP |
2407 | } |
2408 | } | |
2409 | ||
9e1fd49b | 2410 | /* Updates 'port' with new 'pp' description. |
b33951b8 BP |
2411 | * |
2412 | * Does not handle a name or port number change. The caller must implement | |
2413 | * such a change as a delete followed by an add. */ | |
2414 | static void | |
9e1fd49b | 2415 | ofport_modified(struct ofport *port, struct ofputil_phy_port *pp) |
b33951b8 | 2416 | { |
74ff3298 | 2417 | port->pp.hw_addr = pp->hw_addr; |
9e1fd49b BP |
2418 | port->pp.config = ((port->pp.config & ~OFPUTIL_PC_PORT_DOWN) |
2419 | | (pp->config & OFPUTIL_PC_PORT_DOWN)); | |
53fd5c7c BP |
2420 | port->pp.state = ((port->pp.state & ~OFPUTIL_PS_LINK_DOWN) |
2421 | | (pp->state & OFPUTIL_PS_LINK_DOWN)); | |
9e1fd49b BP |
2422 | port->pp.curr = pp->curr; |
2423 | port->pp.advertised = pp->advertised; | |
2424 | port->pp.supported = pp->supported; | |
2425 | port->pp.peer = pp->peer; | |
2426 | port->pp.curr_speed = pp->curr_speed; | |
2427 | port->pp.max_speed = pp->max_speed; | |
b33951b8 | 2428 | |
2a6f78e0 BP |
2429 | connmgr_send_port_status(port->ofproto->connmgr, NULL, |
2430 | &port->pp, OFPPR_MODIFY); | |
064af421 BP |
2431 | } |
2432 | ||
5a2dfd47 JP |
2433 | /* Update OpenFlow 'state' in 'port' and notify controller. */ |
2434 | void | |
9e1fd49b | 2435 | ofproto_port_set_state(struct ofport *port, enum ofputil_port_state state) |
5a2dfd47 | 2436 | { |
9e1fd49b BP |
2437 | if (port->pp.state != state) { |
2438 | port->pp.state = state; | |
2a6f78e0 BP |
2439 | connmgr_send_port_status(port->ofproto->connmgr, NULL, |
2440 | &port->pp, OFPPR_MODIFY); | |
5a2dfd47 JP |
2441 | } |
2442 | } | |
2443 | ||
abe529af | 2444 | void |
4e022ec0 | 2445 | ofproto_port_unregister(struct ofproto *ofproto, ofp_port_t ofp_port) |
e7934396 | 2446 | { |
abe529af BP |
2447 | struct ofport *port = ofproto_get_port(ofproto, ofp_port); |
2448 | if (port) { | |
52a90c29 BP |
2449 | if (port->ofproto->ofproto_class->set_realdev) { |
2450 | port->ofproto->ofproto_class->set_realdev(port, 0, 0); | |
2451 | } | |
b308140a JP |
2452 | if (port->ofproto->ofproto_class->set_stp_port) { |
2453 | port->ofproto->ofproto_class->set_stp_port(port, NULL); | |
2454 | } | |
9efd308e DV |
2455 | if (port->ofproto->ofproto_class->set_rstp_port) { |
2456 | port->ofproto->ofproto_class->set_rstp_port(port, NULL); | |
2457 | } | |
abe529af | 2458 | if (port->ofproto->ofproto_class->set_cfm) { |
a5610457 | 2459 | port->ofproto->ofproto_class->set_cfm(port, NULL); |
abe529af BP |
2460 | } |
2461 | if (port->ofproto->ofproto_class->bundle_remove) { | |
2462 | port->ofproto->ofproto_class->bundle_remove(port); | |
e7934396 BP |
2463 | } |
2464 | } | |
2465 | } | |
2466 | ||
2467 | static void | |
abe529af | 2468 | ofport_destroy__(struct ofport *port) |
e7934396 | 2469 | { |
abe529af BP |
2470 | struct ofproto *ofproto = port->ofproto; |
2471 | const char *name = netdev_get_name(port->netdev); | |
fa066f01 | 2472 | |
abe529af BP |
2473 | hmap_remove(&ofproto->ports, &port->hmap_node); |
2474 | shash_delete(&ofproto->port_by_name, | |
2475 | shash_find(&ofproto->port_by_name, name)); | |
fa066f01 | 2476 | |
abe529af BP |
2477 | netdev_close(port->netdev); |
2478 | ofproto->ofproto_class->port_dealloc(port); | |
e7934396 BP |
2479 | } |
2480 | ||
064af421 | 2481 | static void |
9aad5a5a | 2482 | ofport_destroy(struct ofport *port, bool del) |
064af421 | 2483 | { |
fa066f01 | 2484 | if (port) { |
e1b1d06a | 2485 | dealloc_ofp_port(port->ofproto, port->ofp_port); |
9aad5a5a | 2486 | port->ofproto->ofproto_class->port_destruct(port, del); |
abe529af BP |
2487 | ofport_destroy__(port); |
2488 | } | |
064af421 BP |
2489 | } |
2490 | ||
abe529af | 2491 | struct ofport * |
4e022ec0 | 2492 | ofproto_get_port(const struct ofproto *ofproto, ofp_port_t ofp_port) |
ca0f572c BP |
2493 | { |
2494 | struct ofport *port; | |
2495 | ||
f9c0c3ec | 2496 | HMAP_FOR_EACH_IN_BUCKET (port, hmap_node, hash_ofp_port(ofp_port), |
4e022ec0 | 2497 | &ofproto->ports) { |
abe529af | 2498 | if (port->ofp_port == ofp_port) { |
ca0f572c BP |
2499 | return port; |
2500 | } | |
2501 | } | |
2502 | return NULL; | |
2503 | } | |
2504 | ||
fdcea803 GS |
2505 | static long long int |
2506 | ofport_get_usage(const struct ofproto *ofproto, ofp_port_t ofp_port) | |
2507 | { | |
2508 | struct ofport_usage *usage; | |
2509 | ||
2510 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2511 | &ofproto->ofport_usage) { | |
2512 | if (usage->ofp_port == ofp_port) { | |
2513 | return usage->last_used; | |
2514 | } | |
2515 | } | |
2516 | return 0; | |
2517 | } | |
2518 | ||
2519 | static void | |
2520 | ofport_set_usage(struct ofproto *ofproto, ofp_port_t ofp_port, | |
2521 | long long int last_used) | |
2522 | { | |
2523 | struct ofport_usage *usage; | |
2524 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2525 | &ofproto->ofport_usage) { | |
2526 | if (usage->ofp_port == ofp_port) { | |
2527 | usage->last_used = last_used; | |
2528 | return; | |
2529 | } | |
2530 | } | |
2531 | ovs_assert(last_used == LLONG_MAX); | |
2532 | ||
2533 | usage = xmalloc(sizeof *usage); | |
2534 | usage->ofp_port = ofp_port; | |
2535 | usage->last_used = last_used; | |
2536 | hmap_insert(&ofproto->ofport_usage, &usage->hmap_node, | |
2537 | hash_ofp_port(ofp_port)); | |
2538 | } | |
2539 | ||
865b26a4 GS |
2540 | static void |
2541 | ofport_remove_usage(struct ofproto *ofproto, ofp_port_t ofp_port) | |
2542 | { | |
2543 | struct ofport_usage *usage; | |
2544 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2545 | &ofproto->ofport_usage) { | |
2546 | if (usage->ofp_port == ofp_port) { | |
2547 | hmap_remove(&ofproto->ofport_usage, &usage->hmap_node); | |
2548 | free(usage); | |
2549 | break; | |
2550 | } | |
2551 | } | |
2552 | } | |
2553 | ||
6527c598 PS |
2554 | int |
2555 | ofproto_port_get_stats(const struct ofport *port, struct netdev_stats *stats) | |
2556 | { | |
2557 | struct ofproto *ofproto = port->ofproto; | |
2558 | int error; | |
2559 | ||
2560 | if (ofproto->ofproto_class->port_get_stats) { | |
2561 | error = ofproto->ofproto_class->port_get_stats(port, stats); | |
2562 | } else { | |
2563 | error = EOPNOTSUPP; | |
2564 | } | |
2565 | ||
2566 | return error; | |
2567 | } | |
2568 | ||
01c77073 | 2569 | static int |
b33951b8 | 2570 | update_port(struct ofproto *ofproto, const char *name) |
064af421 | 2571 | { |
abe529af | 2572 | struct ofproto_port ofproto_port; |
9e1fd49b | 2573 | struct ofputil_phy_port pp; |
b33951b8 BP |
2574 | struct netdev *netdev; |
2575 | struct ofport *port; | |
01c77073 | 2576 | int error = 0; |
064af421 BP |
2577 | |
2578 | COVERAGE_INC(ofproto_update_port); | |
c874dc6d | 2579 | |
b33951b8 | 2580 | /* Fetch 'name''s location and properties from the datapath. */ |
abe529af | 2581 | netdev = (!ofproto_port_query_by_name(ofproto, name, &ofproto_port) |
fbfa2911 | 2582 | ? ofport_open(ofproto, &ofproto_port, &pp) |
b33951b8 | 2583 | : NULL); |
4e022ec0 | 2584 | |
b33951b8 | 2585 | if (netdev) { |
abe529af | 2586 | port = ofproto_get_port(ofproto, ofproto_port.ofp_port); |
b33951b8 | 2587 | if (port && !strcmp(netdev_get_name(port->netdev), name)) { |
e65942a0 BP |
2588 | struct netdev *old_netdev = port->netdev; |
2589 | ||
b33951b8 | 2590 | /* 'name' hasn't changed location. Any properties changed? */ |
9e1fd49b BP |
2591 | if (!ofport_equal(&port->pp, &pp)) { |
2592 | ofport_modified(port, &pp); | |
abe529af BP |
2593 | } |
2594 | ||
ada3428f | 2595 | update_mtu(ofproto, port); |
9197df76 | 2596 | |
e65942a0 BP |
2597 | /* Install the newly opened netdev in case it has changed. |
2598 | * Don't close the old netdev yet in case port_modified has to | |
2599 | * remove a retained reference to it.*/ | |
abe529af | 2600 | port->netdev = netdev; |
61501798 | 2601 | port->change_seq = netdev_get_change_seq(netdev); |
abe529af BP |
2602 | |
2603 | if (port->ofproto->ofproto_class->port_modified) { | |
2604 | port->ofproto->ofproto_class->port_modified(port); | |
b33951b8 | 2605 | } |
e65942a0 BP |
2606 | |
2607 | netdev_close(old_netdev); | |
b33951b8 BP |
2608 | } else { |
2609 | /* If 'port' is nonnull then its name differs from 'name' and thus | |
2610 | * we should delete it. If we think there's a port named 'name' | |
2611 | * then its port number must be wrong now so delete it too. */ | |
2612 | if (port) { | |
0f7d71a5 | 2613 | ofport_remove(port); |
b33951b8 BP |
2614 | } |
2615 | ofport_remove_with_name(ofproto, name); | |
01c77073 | 2616 | error = ofport_install(ofproto, netdev, &pp); |
c874dc6d | 2617 | } |
b33951b8 BP |
2618 | } else { |
2619 | /* Any port named 'name' is gone now. */ | |
2620 | ofport_remove_with_name(ofproto, name); | |
c874dc6d | 2621 | } |
abe529af | 2622 | ofproto_port_destroy(&ofproto_port); |
01c77073 BP |
2623 | |
2624 | return error; | |
064af421 BP |
2625 | } |
2626 | ||
2627 | static int | |
2628 | init_ports(struct ofproto *p) | |
2629 | { | |
abe529af BP |
2630 | struct ofproto_port_dump dump; |
2631 | struct ofproto_port ofproto_port; | |
e1b1d06a | 2632 | struct shash_node *node, *next; |
abe529af BP |
2633 | |
2634 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { | |
e1b1d06a JP |
2635 | const char *name = ofproto_port.name; |
2636 | ||
2637 | if (shash_find(&p->port_by_name, name)) { | |
fbfa2911 | 2638 | VLOG_WARN_RL(&rl, "%s: ignoring duplicate device %s in datapath", |
e1b1d06a | 2639 | p->name, name); |
abe529af | 2640 | } else { |
9e1fd49b | 2641 | struct ofputil_phy_port pp; |
b33951b8 BP |
2642 | struct netdev *netdev; |
2643 | ||
e1b1d06a JP |
2644 | /* Check if an OpenFlow port number had been requested. */ |
2645 | node = shash_find(&init_ofp_ports, name); | |
2646 | if (node) { | |
2647 | const struct iface_hint *iface_hint = node->data; | |
4e022ec0 AW |
2648 | simap_put(&p->ofp_requests, name, |
2649 | ofp_to_u16(iface_hint->ofp_port)); | |
e1b1d06a JP |
2650 | } |
2651 | ||
fbfa2911 | 2652 | netdev = ofport_open(p, &ofproto_port, &pp); |
b33951b8 | 2653 | if (netdev) { |
9e1fd49b | 2654 | ofport_install(p, netdev, &pp); |
430dbb14 | 2655 | if (ofp_to_u16(ofproto_port.ofp_port) < p->max_ports) { |
7c35397c | 2656 | p->alloc_port_no = MAX(p->alloc_port_no, |
430dbb14 | 2657 | ofp_to_u16(ofproto_port.ofp_port)); |
7c35397c | 2658 | } |
064af421 BP |
2659 | } |
2660 | } | |
2661 | } | |
b0ec0f27 | 2662 | |
e1b1d06a | 2663 | SHASH_FOR_EACH_SAFE(node, next, &init_ofp_ports) { |
4f9e08a5 | 2664 | struct iface_hint *iface_hint = node->data; |
e1b1d06a JP |
2665 | |
2666 | if (!strcmp(iface_hint->br_name, p->name)) { | |
2667 | free(iface_hint->br_name); | |
2668 | free(iface_hint->br_type); | |
4f9e08a5 | 2669 | free(iface_hint); |
e1b1d06a JP |
2670 | shash_delete(&init_ofp_ports, node); |
2671 | } | |
2672 | } | |
2673 | ||
064af421 BP |
2674 | return 0; |
2675 | } | |
9197df76 JP |
2676 | |
2677 | /* Find the minimum MTU of all non-datapath devices attached to 'p'. | |
2678 | * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */ | |
2679 | static int | |
2680 | find_min_mtu(struct ofproto *p) | |
2681 | { | |
2682 | struct ofport *ofport; | |
2683 | int mtu = 0; | |
2684 | ||
2685 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2686 | struct netdev *netdev = ofport->netdev; | |
2687 | int dev_mtu; | |
2688 | ||
2689 | /* Skip any internal ports, since that's what we're trying to | |
2690 | * set. */ | |
2691 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
2692 | continue; | |
2693 | } | |
2694 | ||
2695 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2696 | continue; | |
2697 | } | |
2698 | if (!mtu || dev_mtu < mtu) { | |
2699 | mtu = dev_mtu; | |
2700 | } | |
2701 | } | |
2702 | ||
2703 | return mtu ? mtu: ETH_PAYLOAD_MAX; | |
2704 | } | |
2705 | ||
ada3428f PS |
2706 | /* Update MTU of all datapath devices on 'p' to the minimum of the |
2707 | * non-datapath ports in event of 'port' added or changed. */ | |
9197df76 | 2708 | static void |
ada3428f | 2709 | update_mtu(struct ofproto *p, struct ofport *port) |
9197df76 JP |
2710 | { |
2711 | struct ofport *ofport; | |
ada3428f PS |
2712 | struct netdev *netdev = port->netdev; |
2713 | int dev_mtu, old_min; | |
2714 | ||
2715 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2716 | port->mtu = 0; | |
2717 | return; | |
2718 | } | |
2719 | if (!strcmp(netdev_get_type(port->netdev), "internal")) { | |
2720 | if (dev_mtu > p->min_mtu) { | |
2721 | if (!netdev_set_mtu(port->netdev, p->min_mtu)) { | |
2722 | dev_mtu = p->min_mtu; | |
2723 | } | |
2724 | } | |
2725 | port->mtu = dev_mtu; | |
2726 | return; | |
2727 | } | |
2728 | ||
2729 | /* For non-internal port find new min mtu. */ | |
2730 | old_min = p->min_mtu; | |
2731 | port->mtu = dev_mtu; | |
2732 | p->min_mtu = find_min_mtu(p); | |
2733 | if (p->min_mtu == old_min) { | |
2734 | return; | |
2735 | } | |
9197df76 JP |
2736 | |
2737 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2738 | struct netdev *netdev = ofport->netdev; | |
2739 | ||
2740 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
ada3428f PS |
2741 | if (!netdev_set_mtu(netdev, p->min_mtu)) { |
2742 | ofport->mtu = p->min_mtu; | |
2743 | } | |
9197df76 JP |
2744 | } |
2745 | } | |
2746 | } | |
064af421 | 2747 | \f |
f416c8d6 JR |
2748 | static void |
2749 | ofproto_rule_destroy__(struct rule *rule) | |
2750 | OVS_NO_THREAD_SAFETY_ANALYSIS | |
2751 | { | |
2752 | cls_rule_destroy(CONST_CAST(struct cls_rule *, &rule->cr)); | |
2753 | rule_actions_destroy(rule_get_actions(rule)); | |
2754 | ovs_mutex_destroy(&rule->mutex); | |
2755 | rule->ofproto->ofproto_class->rule_dealloc(rule); | |
2756 | } | |
2757 | ||
2758 | static void | |
2759 | rule_destroy_cb(struct rule *rule) | |
f695ebfa | 2760 | OVS_NO_THREAD_SAFETY_ANALYSIS |
f416c8d6 | 2761 | { |
f695ebfa JR |
2762 | /* Send rule removed if needed. */ |
2763 | if (rule->flags & OFPUTIL_FF_SEND_FLOW_REM | |
2764 | && rule->removed_reason != OVS_OFPRR_NONE | |
2765 | && !rule_is_hidden(rule)) { | |
2766 | ofproto_rule_send_removed(rule); | |
2767 | } | |
f416c8d6 JR |
2768 | rule->ofproto->ofproto_class->rule_destruct(rule); |
2769 | ofproto_rule_destroy__(rule); | |
2770 | } | |
2771 | ||
a2143702 BP |
2772 | void |
2773 | ofproto_rule_ref(struct rule *rule) | |
064af421 | 2774 | { |
1eae3d33 | 2775 | if (rule) { |
37bec3d3 | 2776 | ovs_refcount_ref(&rule->ref_count); |
a2143702 BP |
2777 | } |
2778 | } | |
2779 | ||
f5d16e55 JR |
2780 | bool |
2781 | ofproto_rule_try_ref(struct rule *rule) | |
2782 | { | |
2783 | if (rule) { | |
2784 | return ovs_refcount_try_ref_rcu(&rule->ref_count); | |
2785 | } | |
2786 | return false; | |
2787 | } | |
2788 | ||
f416c8d6 JR |
2789 | /* Decrements 'rule''s ref_count and schedules 'rule' to be destroyed if the |
2790 | * ref_count reaches 0. | |
2791 | * | |
2792 | * Use of RCU allows short term use (between RCU quiescent periods) without | |
2793 | * keeping a reference. A reference must be taken if the rule needs to | |
2794 | * stay around accross the RCU quiescent periods. */ | |
a2143702 BP |
2795 | void |
2796 | ofproto_rule_unref(struct rule *rule) | |
2797 | { | |
24f83812 | 2798 | if (rule && ovs_refcount_unref_relaxed(&rule->ref_count) == 1) { |
f416c8d6 | 2799 | ovsrcu_postpone(rule_destroy_cb, rule); |
1eae3d33 | 2800 | } |
064af421 BP |
2801 | } |
2802 | ||
39c94593 JR |
2803 | static void |
2804 | remove_rule_rcu__(struct rule *rule) | |
2805 | OVS_REQUIRES(ofproto_mutex) | |
2806 | { | |
2807 | struct ofproto *ofproto = rule->ofproto; | |
2808 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
2809 | ||
2810 | ovs_assert(!cls_rule_visible_in_version(&rule->cr, CLS_MAX_VERSION)); | |
2811 | if (!classifier_remove(&table->cls, &rule->cr)) { | |
2812 | OVS_NOT_REACHED(); | |
2813 | } | |
2814 | ofproto->ofproto_class->rule_delete(rule); | |
2815 | ofproto_rule_unref(rule); | |
2816 | } | |
2817 | ||
2818 | static void | |
2819 | remove_rule_rcu(struct rule *rule) | |
2820 | OVS_EXCLUDED(ofproto_mutex) | |
2821 | { | |
2822 | ovs_mutex_lock(&ofproto_mutex); | |
2823 | remove_rule_rcu__(rule); | |
2824 | ovs_mutex_unlock(&ofproto_mutex); | |
2825 | } | |
2826 | ||
2827 | /* Removes and deletes rules from a NULL-terminated array of rule pointers. */ | |
2828 | static void | |
2829 | remove_rules_rcu(struct rule **rules) | |
2830 | OVS_EXCLUDED(ofproto_mutex) | |
2831 | { | |
2832 | struct rule **orig_rules = rules; | |
2833 | ||
2834 | if (*rules) { | |
2835 | struct ofproto *ofproto = rules[0]->ofproto; | |
2836 | unsigned long tables[BITMAP_N_LONGS(256)]; | |
2837 | struct rule *rule; | |
2838 | size_t table_id; | |
2839 | ||
2840 | memset(tables, 0, sizeof tables); | |
2841 | ||
2842 | ovs_mutex_lock(&ofproto_mutex); | |
2843 | while ((rule = *rules++)) { | |
2844 | /* Defer once for each new table. This defers the subtable cleanup | |
2845 | * until later, so that when removing large number of flows the | |
2846 | * operation is faster. */ | |
2847 | if (!bitmap_is_set(tables, rule->table_id)) { | |
2848 | struct classifier *cls = &ofproto->tables[rule->table_id].cls; | |
2849 | ||
2850 | bitmap_set1(tables, rule->table_id); | |
2851 | classifier_defer(cls); | |
2852 | } | |
2853 | remove_rule_rcu__(rule); | |
2854 | } | |
2855 | ||
2856 | BITMAP_FOR_EACH_1(table_id, 256, tables) { | |
2857 | struct classifier *cls = &ofproto->tables[table_id].cls; | |
2858 | ||
2859 | classifier_publish(cls); | |
2860 | } | |
2861 | ovs_mutex_unlock(&ofproto_mutex); | |
2862 | } | |
2863 | ||
2864 | free(orig_rules); | |
2865 | } | |
2866 | ||
809c7548 RW |
2867 | void |
2868 | ofproto_group_ref(struct ofgroup *group) | |
2869 | { | |
2870 | if (group) { | |
2871 | ovs_refcount_ref(&group->ref_count); | |
2872 | } | |
2873 | } | |
2874 | ||
2875 | void | |
2876 | ofproto_group_unref(struct ofgroup *group) | |
2877 | { | |
2878 | if (group && ovs_refcount_unref(&group->ref_count) == 1) { | |
2879 | group->ofproto->ofproto_class->group_destruct(group); | |
2880 | ofputil_bucket_list_destroy(&group->buckets); | |
2881 | group->ofproto->ofproto_class->group_dealloc(group); | |
2882 | } | |
2883 | } | |
2884 | ||
65efd2ab JR |
2885 | static uint32_t get_provider_meter_id(const struct ofproto *, |
2886 | uint32_t of_meter_id); | |
2887 | ||
dc723c44 JR |
2888 | /* Creates and returns a new 'struct rule_actions', whose actions are a copy |
2889 | * of from the 'ofpacts_len' bytes of 'ofpacts'. */ | |
2890 | const struct rule_actions * | |
4c7562c5 | 2891 | rule_actions_create(const struct ofpact *ofpacts, size_t ofpacts_len) |
6f00e29b BP |
2892 | { |
2893 | struct rule_actions *actions; | |
2894 | ||
dc723c44 | 2895 | actions = xmalloc(sizeof *actions + ofpacts_len); |
6f00e29b | 2896 | actions->ofpacts_len = ofpacts_len; |
4c7562c5 | 2897 | actions->has_meter = ofpacts_get_meter(ofpacts, ofpacts_len) != 0; |
dc723c44 | 2898 | memcpy(actions->ofpacts, ofpacts, ofpacts_len); |
65efd2ab | 2899 | |
35f48b8b BP |
2900 | actions->has_learn_with_delete = (next_learn_with_delete(actions, NULL) |
2901 | != NULL); | |
2902 | ||
6f00e29b BP |
2903 | return actions; |
2904 | } | |
2905 | ||
dc723c44 | 2906 | /* Free the actions after the RCU quiescent period is reached. */ |
6f00e29b | 2907 | void |
dc723c44 | 2908 | rule_actions_destroy(const struct rule_actions *actions) |
6f00e29b | 2909 | { |
06a0f3e2 | 2910 | if (actions) { |
dc723c44 | 2911 | ovsrcu_postpone(free, CONST_CAST(struct rule_actions *, actions)); |
6f00e29b BP |
2912 | } |
2913 | } | |
2914 | ||
bcf84111 | 2915 | /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action |
f25d0cf3 | 2916 | * that outputs to 'port' (output to OFPP_FLOOD and OFPP_ALL doesn't count). */ |
cdbdeeda | 2917 | bool |
4e022ec0 | 2918 | ofproto_rule_has_out_port(const struct rule *rule, ofp_port_t port) |
15aaf599 | 2919 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 2920 | { |
06a0f3e2 BP |
2921 | if (port == OFPP_ANY) { |
2922 | return true; | |
2923 | } else { | |
2924 | const struct rule_actions *actions = rule_get_actions(rule); | |
2925 | return ofpacts_output_to_port(actions->ofpacts, | |
2926 | actions->ofpacts_len, port); | |
2927 | } | |
064af421 BP |
2928 | } |
2929 | ||
7395c052 | 2930 | /* Returns true if 'rule' has group and equals group_id. */ |
74e79b7c | 2931 | static bool |
7395c052 | 2932 | ofproto_rule_has_out_group(const struct rule *rule, uint32_t group_id) |
15aaf599 | 2933 | OVS_REQUIRES(ofproto_mutex) |
7395c052 | 2934 | { |
06a0f3e2 BP |
2935 | if (group_id == OFPG_ANY) { |
2936 | return true; | |
2937 | } else { | |
2938 | const struct rule_actions *actions = rule_get_actions(rule); | |
2939 | return ofpacts_output_to_group(actions->ofpacts, | |
2940 | actions->ofpacts_len, group_id); | |
2941 | } | |
7395c052 NZ |
2942 | } |
2943 | ||
35412852 BP |
2944 | static void |
2945 | rule_execute_destroy(struct rule_execute *e) | |
eedc0097 | 2946 | { |
35412852 | 2947 | ofproto_rule_unref(e->rule); |
417e7e66 | 2948 | ovs_list_remove(&e->list_node); |
35412852 BP |
2949 | free(e); |
2950 | } | |
eedc0097 | 2951 | |
35412852 BP |
2952 | /* Executes all "rule_execute" operations queued up in ofproto->rule_executes, |
2953 | * by passing them to the ofproto provider. */ | |
2954 | static void | |
2955 | run_rule_executes(struct ofproto *ofproto) | |
15aaf599 | 2956 | OVS_EXCLUDED(ofproto_mutex) |
35412852 BP |
2957 | { |
2958 | struct rule_execute *e, *next; | |
ca6ba700 | 2959 | struct ovs_list executes; |
35412852 BP |
2960 | |
2961 | guarded_list_pop_all(&ofproto->rule_executes, &executes); | |
2962 | LIST_FOR_EACH_SAFE (e, next, list_node, &executes) { | |
35412852 BP |
2963 | struct flow flow; |
2964 | ||
cf62fa4c | 2965 | flow_extract(e->packet, &flow); |
b5e7e61a | 2966 | flow.in_port.ofp_port = e->in_port; |
35412852 BP |
2967 | ofproto->ofproto_class->rule_execute(e->rule, &flow, e->packet); |
2968 | ||
2969 | rule_execute_destroy(e); | |
2970 | } | |
2971 | } | |
2972 | ||
2973 | /* Destroys and discards all "rule_execute" operations queued up in | |
2974 | * ofproto->rule_executes. */ | |
2975 | static void | |
2976 | destroy_rule_executes(struct ofproto *ofproto) | |
2977 | { | |
2978 | struct rule_execute *e, *next; | |
ca6ba700 | 2979 | struct ovs_list executes; |
35412852 BP |
2980 | |
2981 | guarded_list_pop_all(&ofproto->rule_executes, &executes); | |
2982 | LIST_FOR_EACH_SAFE (e, next, list_node, &executes) { | |
cf62fa4c | 2983 | dp_packet_delete(e->packet); |
35412852 BP |
2984 | rule_execute_destroy(e); |
2985 | } | |
350a665f BP |
2986 | } |
2987 | ||
adcf00ba | 2988 | static bool |
834fe5cb | 2989 | rule_is_readonly(const struct rule *rule) |
5c67e4af | 2990 | { |
834fe5cb BP |
2991 | const struct oftable *table = &rule->ofproto->tables[rule->table_id]; |
2992 | return (table->flags & OFTABLE_READONLY) != 0; | |
5c67e4af | 2993 | } |
fa066f01 | 2994 | \f |
35f48b8b BP |
2995 | static uint32_t |
2996 | hash_learned_cookie(ovs_be64 cookie_, uint8_t table_id) | |
2997 | { | |
2998 | uint64_t cookie = (OVS_FORCE uint64_t) cookie_; | |
2999 | return hash_3words(cookie, cookie >> 32, table_id); | |
3000 | } | |
3001 | ||
3002 | static void | |
3003 | learned_cookies_update_one__(struct ofproto *ofproto, | |
3004 | const struct ofpact_learn *learn, | |
ca6ba700 | 3005 | int delta, struct ovs_list *dead_cookies) |
35f48b8b BP |
3006 | OVS_REQUIRES(ofproto_mutex) |
3007 | { | |
3008 | uint32_t hash = hash_learned_cookie(learn->cookie, learn->table_id); | |
3009 | struct learned_cookie *c; | |
3010 | ||
3011 | HMAP_FOR_EACH_WITH_HASH (c, u.hmap_node, hash, &ofproto->learned_cookies) { | |
3012 | if (c->cookie == learn->cookie && c->table_id == learn->table_id) { | |
3013 | c->n += delta; | |
3014 | ovs_assert(c->n >= 0); | |
3015 | ||
3016 | if (!c->n) { | |
3017 | hmap_remove(&ofproto->learned_cookies, &c->u.hmap_node); | |
417e7e66 | 3018 | ovs_list_push_back(dead_cookies, &c->u.list_node); |
35f48b8b BP |
3019 | } |
3020 | ||
3021 | return; | |
3022 | } | |
3023 | } | |
3024 | ||
3025 | ovs_assert(delta > 0); | |
3026 | c = xmalloc(sizeof *c); | |
3027 | hmap_insert(&ofproto->learned_cookies, &c->u.hmap_node, hash); | |
3028 | c->cookie = learn->cookie; | |
3029 | c->table_id = learn->table_id; | |
3030 | c->n = delta; | |
3031 | } | |
3032 | ||
3033 | static const struct ofpact_learn * | |
3034 | next_learn_with_delete(const struct rule_actions *actions, | |
3035 | const struct ofpact_learn *start) | |
3036 | { | |
3037 | const struct ofpact *pos; | |
3038 | ||
3039 | for (pos = start ? ofpact_next(&start->ofpact) : actions->ofpacts; | |
3040 | pos < ofpact_end(actions->ofpacts, actions->ofpacts_len); | |
3041 | pos = ofpact_next(pos)) { | |
3042 | if (pos->type == OFPACT_LEARN) { | |
3043 | const struct ofpact_learn *learn = ofpact_get_LEARN(pos); | |
3044 | if (learn->flags & NX_LEARN_F_DELETE_LEARNED) { | |
3045 | return learn; | |
3046 | } | |
3047 | } | |
3048 | } | |
3049 | ||
3050 | return NULL; | |
3051 | } | |
3052 | ||
3053 | static void | |
3054 | learned_cookies_update__(struct ofproto *ofproto, | |
3055 | const struct rule_actions *actions, | |
ca6ba700 | 3056 | int delta, struct ovs_list *dead_cookies) |
35f48b8b BP |
3057 | OVS_REQUIRES(ofproto_mutex) |
3058 | { | |
3059 | if (actions->has_learn_with_delete) { | |
3060 | const struct ofpact_learn *learn; | |
3061 | ||
3062 | for (learn = next_learn_with_delete(actions, NULL); learn; | |
3063 | learn = next_learn_with_delete(actions, learn)) { | |
3064 | learned_cookies_update_one__(ofproto, learn, delta, dead_cookies); | |
3065 | } | |
3066 | } | |
3067 | } | |
3068 | ||
3069 | static void | |
3070 | learned_cookies_inc(struct ofproto *ofproto, | |
3071 | const struct rule_actions *actions) | |
3072 | OVS_REQUIRES(ofproto_mutex) | |
3073 | { | |
3074 | learned_cookies_update__(ofproto, actions, +1, NULL); | |
3075 | } | |
3076 | ||
3077 | static void | |
3078 | learned_cookies_dec(struct ofproto *ofproto, | |
3079 | const struct rule_actions *actions, | |
ca6ba700 | 3080 | struct ovs_list *dead_cookies) |
35f48b8b BP |
3081 | OVS_REQUIRES(ofproto_mutex) |
3082 | { | |
3083 | learned_cookies_update__(ofproto, actions, -1, dead_cookies); | |
3084 | } | |
3085 | ||
3086 | static void | |
ca6ba700 | 3087 | learned_cookies_flush(struct ofproto *ofproto, struct ovs_list *dead_cookies) |
35f48b8b BP |
3088 | OVS_REQUIRES(ofproto_mutex) |
3089 | { | |
5f03c983 | 3090 | struct learned_cookie *c; |
35f48b8b | 3091 | |
5f03c983 | 3092 | LIST_FOR_EACH_POP (c, u.list_node, dead_cookies) { |
35f48b8b BP |
3093 | struct rule_criteria criteria; |
3094 | struct rule_collection rules; | |
3095 | struct match match; | |
3096 | ||
3097 | match_init_catchall(&match); | |
2b7b1427 | 3098 | rule_criteria_init(&criteria, c->table_id, &match, 0, CLS_MAX_VERSION, |
35f48b8b BP |
3099 | c->cookie, OVS_BE64_MAX, OFPP_ANY, OFPG_ANY); |
3100 | rule_criteria_require_rw(&criteria, false); | |
3101 | collect_rules_loose(ofproto, &criteria, &rules); | |
35f48b8b | 3102 | rule_criteria_destroy(&criteria); |
39c94593 | 3103 | delete_flows__(&rules, OFPRR_DELETE, NULL); |
35f48b8b | 3104 | |
35f48b8b BP |
3105 | free(c); |
3106 | } | |
3107 | } | |
3108 | \f | |
90bf1e07 | 3109 | static enum ofperr |
d1e2cf21 | 3110 | handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3111 | { |
b0421aa2 | 3112 | ofconn_send_reply(ofconn, make_echo_reply(oh)); |
064af421 | 3113 | return 0; |
064af421 BP |
3114 | } |
3115 | ||
3c1bb396 BP |
3116 | static void |
3117 | query_tables(struct ofproto *ofproto, | |
3118 | struct ofputil_table_features **featuresp, | |
3119 | struct ofputil_table_stats **statsp) | |
3120 | { | |
178742f9 BP |
3121 | struct mf_bitmap rw_fields = oxm_writable_fields(); |
3122 | struct mf_bitmap match = oxm_matchable_fields(); | |
3123 | struct mf_bitmap mask = oxm_maskable_fields(); | |
3c1bb396 BP |
3124 | |
3125 | struct ofputil_table_features *features; | |
3126 | struct ofputil_table_stats *stats; | |
3127 | int i; | |
3128 | ||
3c1bb396 BP |
3129 | features = *featuresp = xcalloc(ofproto->n_tables, sizeof *features); |
3130 | for (i = 0; i < ofproto->n_tables; i++) { | |
3131 | struct ofputil_table_features *f = &features[i]; | |
3132 | ||
3133 | f->table_id = i; | |
3134 | sprintf(f->name, "table%d", i); | |
3135 | f->metadata_match = OVS_BE64_MAX; | |
3136 | f->metadata_write = OVS_BE64_MAX; | |
afcea9ea | 3137 | atomic_read_relaxed(&ofproto->tables[i].miss_config, &f->miss_config); |
3c1bb396 BP |
3138 | f->max_entries = 1000000; |
3139 | ||
5dc7516b BP |
3140 | bool more_tables = false; |
3141 | for (int j = i + 1; j < ofproto->n_tables; j++) { | |
3142 | if (!(ofproto->tables[j].flags & OFTABLE_HIDDEN)) { | |
3143 | bitmap_set1(f->nonmiss.next, j); | |
3144 | more_tables = true; | |
3145 | } | |
3146 | } | |
3c1bb396 | 3147 | f->nonmiss.instructions = (1u << N_OVS_INSTRUCTIONS) - 1; |
5dc7516b | 3148 | if (!more_tables) { |
3c1bb396 BP |
3149 | f->nonmiss.instructions &= ~(1u << OVSINST_OFPIT11_GOTO_TABLE); |
3150 | } | |
3151 | f->nonmiss.write.ofpacts = (UINT64_C(1) << N_OFPACTS) - 1; | |
3152 | f->nonmiss.write.set_fields = rw_fields; | |
3153 | f->nonmiss.apply = f->nonmiss.write; | |
3154 | f->miss = f->nonmiss; | |
3155 | ||
3156 | f->match = match; | |
3157 | f->mask = mask; | |
3158 | f->wildcard = match; | |
3159 | } | |
3160 | ||
3161 | if (statsp) { | |
3162 | stats = *statsp = xcalloc(ofproto->n_tables, sizeof *stats); | |
3163 | for (i = 0; i < ofproto->n_tables; i++) { | |
3164 | struct ofputil_table_stats *s = &stats[i]; | |
3c1bb396 BP |
3165 | |
3166 | s->table_id = i; | |
d79e3d70 | 3167 | s->active_count = ofproto->tables[i].n_flows; |
3fbbcba7 BP |
3168 | if (i == 0) { |
3169 | s->active_count -= connmgr_count_hidden_rules( | |
3170 | ofproto->connmgr); | |
3171 | } | |
3c1bb396 BP |
3172 | } |
3173 | } else { | |
3174 | stats = NULL; | |
3175 | } | |
3176 | ||
3177 | ofproto->ofproto_class->query_tables(ofproto, features, stats); | |
3178 | ||
3179 | for (i = 0; i < ofproto->n_tables; i++) { | |
3180 | const struct oftable *table = &ofproto->tables[i]; | |
3181 | struct ofputil_table_features *f = &features[i]; | |
3182 | ||
3183 | if (table->name) { | |
3184 | ovs_strzcpy(f->name, table->name, sizeof f->name); | |
3185 | } | |
3186 | ||
3187 | if (table->max_flows < f->max_entries) { | |
3188 | f->max_entries = table->max_flows; | |
3189 | } | |
3190 | } | |
3191 | } | |
3192 | ||
3193 | static void | |
3194 | query_switch_features(struct ofproto *ofproto, | |
3195 | bool *arp_match_ip, uint64_t *ofpacts) | |
3196 | { | |
3197 | struct ofputil_table_features *features, *f; | |
3198 | ||
3199 | *arp_match_ip = false; | |
3200 | *ofpacts = 0; | |
3201 | ||
3202 | query_tables(ofproto, &features, NULL); | |
3203 | for (f = features; f < &features[ofproto->n_tables]; f++) { | |
3204 | *ofpacts |= f->nonmiss.apply.ofpacts | f->miss.apply.ofpacts; | |
3205 | if (bitmap_is_set(f->match.bm, MFF_ARP_SPA) || | |
3206 | bitmap_is_set(f->match.bm, MFF_ARP_TPA)) { | |
3207 | *arp_match_ip = true; | |
3208 | } | |
3209 | } | |
3210 | free(features); | |
3211 | ||
3212 | /* Sanity check. */ | |
3213 | ovs_assert(*ofpacts & (UINT64_C(1) << OFPACT_OUTPUT)); | |
3214 | } | |
3215 | ||
90bf1e07 | 3216 | static enum ofperr |
d1e2cf21 | 3217 | handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3218 | { |
64ff1d96 | 3219 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
9e1fd49b | 3220 | struct ofputil_switch_features features; |
064af421 | 3221 | struct ofport *port; |
6c1491fb | 3222 | bool arp_match_ip; |
9e1fd49b | 3223 | struct ofpbuf *b; |
064af421 | 3224 | |
3c1bb396 | 3225 | query_switch_features(ofproto, &arp_match_ip, &features.ofpacts); |
064af421 | 3226 | |
9e1fd49b BP |
3227 | features.datapath_id = ofproto->datapath_id; |
3228 | features.n_buffers = pktbuf_capacity(); | |
adcf00ba | 3229 | features.n_tables = ofproto_get_n_visible_tables(ofproto); |
9e1fd49b | 3230 | features.capabilities = (OFPUTIL_C_FLOW_STATS | OFPUTIL_C_TABLE_STATS | |
4efe455d BP |
3231 | OFPUTIL_C_PORT_STATS | OFPUTIL_C_QUEUE_STATS | |
3232 | OFPUTIL_C_GROUP_STATS); | |
6c1491fb | 3233 | if (arp_match_ip) { |
9e1fd49b | 3234 | features.capabilities |= OFPUTIL_C_ARP_MATCH_IP; |
6c1491fb | 3235 | } |
2e1ae200 JR |
3236 | /* FIXME: Fill in proper features.auxiliary_id for auxiliary connections */ |
3237 | features.auxiliary_id = 0; | |
9e1fd49b BP |
3238 | b = ofputil_encode_switch_features(&features, ofconn_get_protocol(ofconn), |
3239 | oh->xid); | |
64ff1d96 | 3240 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
9e1fd49b | 3241 | ofputil_put_switch_features_port(&port->pp, b); |
064af421 | 3242 | } |
064af421 | 3243 | |
9e1fd49b | 3244 | ofconn_send_reply(ofconn, b); |
064af421 BP |
3245 | return 0; |
3246 | } | |
064af421 | 3247 | |
90bf1e07 | 3248 | static enum ofperr |
d1e2cf21 | 3249 | handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3250 | { |
ad99e2ed BP |
3251 | struct ofputil_switch_config config; |
3252 | config.frag = ofconn_get_ofproto(ofconn)->frag_handling; | |
3253 | config.invalid_ttl_to_controller | |
3254 | = ofconn_get_invalid_ttl_to_controller(ofconn); | |
3255 | config.miss_send_len = ofconn_get_miss_send_len(ofconn); | |
3256 | ||
3257 | ofconn_send_reply(ofconn, ofputil_encode_get_config_reply(oh, &config)); | |
2d70a31a | 3258 | |
064af421 BP |
3259 | return 0; |
3260 | } | |
064af421 | 3261 | |
90bf1e07 | 3262 | static enum ofperr |
982697a4 | 3263 | handle_set_config(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3264 | { |
64ff1d96 | 3265 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
ad99e2ed BP |
3266 | struct ofputil_switch_config config; |
3267 | enum ofperr error; | |
3268 | ||
3269 | error = ofputil_decode_set_config(oh, &config); | |
3270 | if (error) { | |
3271 | return error; | |
3272 | } | |
2d70a31a | 3273 | |
7257b535 | 3274 | if (ofconn_get_type(ofconn) != OFCONN_PRIMARY |
f4f1ea7e | 3275 | || ofconn_get_role(ofconn) != OFPCR12_ROLE_SLAVE) { |
ad99e2ed BP |
3276 | enum ofputil_frag_handling cur = ofproto->frag_handling; |
3277 | enum ofputil_frag_handling next = config.frag; | |
7257b535 | 3278 | |
7257b535 BP |
3279 | if (cur != next) { |
3280 | if (ofproto->ofproto_class->set_frag_handling(ofproto, next)) { | |
3281 | ofproto->frag_handling = next; | |
3282 | } else { | |
3283 | VLOG_WARN_RL(&rl, "%s: unsupported fragment handling mode %s", | |
3284 | ofproto->name, | |
3285 | ofputil_frag_handling_to_string(next)); | |
3286 | } | |
064af421 BP |
3287 | } |
3288 | } | |
ebe482fd | 3289 | |
ad99e2ed BP |
3290 | if (config.invalid_ttl_to_controller >= 0) { |
3291 | ofconn_set_invalid_ttl_to_controller(ofconn, | |
3292 | config.invalid_ttl_to_controller); | |
3293 | } | |
3294 | ||
3295 | ofconn_set_miss_send_len(ofconn, config.miss_send_len); | |
0ad9b732 | 3296 | |
064af421 | 3297 | return 0; |
064af421 BP |
3298 | } |
3299 | ||
9deba63b | 3300 | /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow |
90bf1e07 BP |
3301 | * error message code for the caller to propagate upward. Otherwise, returns |
3302 | * 0. | |
3303 | * | |
3304 | * The log message mentions 'msg_type'. */ | |
3305 | static enum ofperr | |
3306 | reject_slave_controller(struct ofconn *ofconn) | |
9deba63b | 3307 | { |
1ce0a5fa | 3308 | if (ofconn_get_type(ofconn) == OFCONN_PRIMARY |
f4f1ea7e | 3309 | && ofconn_get_role(ofconn) == OFPCR12_ROLE_SLAVE) { |
20e4ec1a | 3310 | return OFPERR_OFPBRC_IS_SLAVE; |
9deba63b BP |
3311 | } else { |
3312 | return 0; | |
3313 | } | |
3314 | } | |
3315 | ||
7e9f8266 BP |
3316 | /* Checks that the 'ofpacts_len' bytes of action in 'ofpacts' are appropriate |
3317 | * for 'ofproto': | |
3318 | * | |
3319 | * - If they use a meter, then 'ofproto' has that meter configured. | |
3320 | * | |
3321 | * - If they use any groups, then 'ofproto' has that group configured. | |
3322 | * | |
3323 | * Returns 0 if successful, otherwise an OpenFlow error. */ | |
89108874 | 3324 | enum ofperr |
9cae45dc | 3325 | ofproto_check_ofpacts(struct ofproto *ofproto, |
7e9f8266 | 3326 | const struct ofpact ofpacts[], size_t ofpacts_len) |
9cae45dc | 3327 | { |
84d68566 | 3328 | const struct ofpact *a; |
9cae45dc JR |
3329 | uint32_t mid; |
3330 | ||
7e9f8266 BP |
3331 | mid = ofpacts_get_meter(ofpacts, ofpacts_len); |
3332 | if (mid && get_provider_meter_id(ofproto, mid) == UINT32_MAX) { | |
3333 | return OFPERR_OFPMMFC_INVALID_METER; | |
9cae45dc JR |
3334 | } |
3335 | ||
4f20179d | 3336 | OFPACT_FOR_EACH_FLATTENED (a, ofpacts, ofpacts_len) { |
7e9f8266 BP |
3337 | if (a->type == OFPACT_GROUP |
3338 | && !ofproto_group_exists(ofproto, ofpact_get_GROUP(a)->group_id)) { | |
3339 | return OFPERR_OFPBAC_BAD_OUT_GROUP; | |
84d68566 SH |
3340 | } |
3341 | } | |
3342 | ||
9cae45dc JR |
3343 | return 0; |
3344 | } | |
3345 | ||
90bf1e07 | 3346 | static enum ofperr |
982697a4 | 3347 | handle_packet_out(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3348 | { |
64ff1d96 | 3349 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
c6a93eb7 | 3350 | struct ofputil_packet_out po; |
cf62fa4c | 3351 | struct dp_packet *payload; |
f25d0cf3 BP |
3352 | uint64_t ofpacts_stub[1024 / 8]; |
3353 | struct ofpbuf ofpacts; | |
ae412e7d | 3354 | struct flow flow; |
90bf1e07 | 3355 | enum ofperr error; |
064af421 | 3356 | |
ac51afaf BP |
3357 | COVERAGE_INC(ofproto_packet_out); |
3358 | ||
76589937 | 3359 | error = reject_slave_controller(ofconn); |
9deba63b | 3360 | if (error) { |
f25d0cf3 | 3361 | goto exit; |
9deba63b BP |
3362 | } |
3363 | ||
c6a93eb7 | 3364 | /* Decode message. */ |
f25d0cf3 | 3365 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
982697a4 | 3366 | error = ofputil_decode_packet_out(&po, oh, &ofpacts); |
064af421 | 3367 | if (error) { |
f25d0cf3 | 3368 | goto exit_free_ofpacts; |
064af421 | 3369 | } |
430dbb14 | 3370 | if (ofp_to_u16(po.in_port) >= p->max_ports |
4e022ec0 | 3371 | && ofp_to_u16(po.in_port) < ofp_to_u16(OFPP_MAX)) { |
2e1bfcb6 | 3372 | error = OFPERR_OFPBRC_BAD_PORT; |
91858960 BP |
3373 | goto exit_free_ofpacts; |
3374 | } | |
064af421 | 3375 | |
ac51afaf | 3376 | /* Get payload. */ |
c6a93eb7 BP |
3377 | if (po.buffer_id != UINT32_MAX) { |
3378 | error = ofconn_pktbuf_retrieve(ofconn, po.buffer_id, &payload, NULL); | |
9bfe9334 | 3379 | if (error) { |
f25d0cf3 | 3380 | goto exit_free_ofpacts; |
064af421 | 3381 | } |
064af421 | 3382 | } else { |
bb622f82 | 3383 | /* Ensure that the L3 header is 32-bit aligned. */ |
cf62fa4c | 3384 | payload = dp_packet_clone_data_with_headroom(po.packet, po.packet_len, 2); |
e1154f71 BP |
3385 | } |
3386 | ||
548de4dd | 3387 | /* Verify actions against packet, then send packet if successful. */ |
cf62fa4c | 3388 | flow_extract(payload, &flow); |
b5e7e61a | 3389 | flow.in_port.ofp_port = po.in_port; |
89108874 JR |
3390 | |
3391 | /* Check actions like for flow mods. We pass a 'table_id' of 0 to | |
3392 | * ofproto_check_consistency(), which isn't strictly correct because these | |
3393 | * actions aren't in any table. This is OK as 'table_id' is only used to | |
3394 | * check instructions (e.g., goto-table), which can't appear on the action | |
3395 | * list of a packet-out. */ | |
3396 | error = ofpacts_check_consistency(po.ofpacts, po.ofpacts_len, | |
3397 | &flow, u16_to_ofp(p->max_ports), | |
3398 | 0, p->n_tables, | |
3399 | ofconn_get_protocol(ofconn)); | |
548de4dd | 3400 | if (!error) { |
89108874 JR |
3401 | error = ofproto_check_ofpacts(p, po.ofpacts, po.ofpacts_len); |
3402 | if (!error) { | |
3403 | error = p->ofproto_class->packet_out(p, payload, &flow, | |
3404 | po.ofpacts, po.ofpacts_len); | |
3405 | } | |
548de4dd | 3406 | } |
cf62fa4c | 3407 | dp_packet_delete(payload); |
abe529af | 3408 | |
f25d0cf3 BP |
3409 | exit_free_ofpacts: |
3410 | ofpbuf_uninit(&ofpacts); | |
3411 | exit: | |
abe529af | 3412 | return error; |
064af421 BP |
3413 | } |
3414 | ||
77ab5fd2 BP |
3415 | static enum ofperr |
3416 | handle_nxt_resume(struct ofconn *ofconn, const struct ofp_header *oh) | |
3417 | { | |
3418 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
3419 | struct ofputil_packet_in_private pin; | |
3420 | enum ofperr error; | |
3421 | ||
3422 | error = ofputil_decode_packet_in_private(oh, false, &pin, NULL, NULL); | |
3423 | if (error) { | |
3424 | return error; | |
3425 | } | |
3426 | ||
3427 | error = (ofproto->ofproto_class->nxt_resume | |
3428 | ? ofproto->ofproto_class->nxt_resume(ofproto, &pin) | |
3429 | : OFPERR_NXR_NOT_SUPPORTED); | |
3430 | ||
3431 | ofputil_packet_in_private_destroy(&pin); | |
3432 | ||
3433 | return error; | |
3434 | } | |
3435 | ||
064af421 | 3436 | static void |
2a6f78e0 | 3437 | update_port_config(struct ofconn *ofconn, struct ofport *port, |
9e1fd49b BP |
3438 | enum ofputil_port_config config, |
3439 | enum ofputil_port_config mask) | |
064af421 | 3440 | { |
2a6f78e0 | 3441 | enum ofputil_port_config toggle = (config ^ port->pp.config) & mask; |
abe529af | 3442 | |
2a6f78e0 BP |
3443 | if (toggle & OFPUTIL_PC_PORT_DOWN |
3444 | && (config & OFPUTIL_PC_PORT_DOWN | |
3445 | ? netdev_turn_flags_off(port->netdev, NETDEV_UP, NULL) | |
3446 | : netdev_turn_flags_on(port->netdev, NETDEV_UP, NULL))) { | |
3447 | /* We tried to bring the port up or down, but it failed, so don't | |
3448 | * update the "down" bit. */ | |
9e1fd49b | 3449 | toggle &= ~OFPUTIL_PC_PORT_DOWN; |
064af421 | 3450 | } |
abe529af | 3451 | |
2a6f78e0 BP |
3452 | if (toggle) { |
3453 | enum ofputil_port_config old_config = port->pp.config; | |
3454 | port->pp.config ^= toggle; | |
abe529af | 3455 | port->ofproto->ofproto_class->port_reconfigured(port, old_config); |
2a6f78e0 BP |
3456 | connmgr_send_port_status(port->ofproto->connmgr, ofconn, &port->pp, |
3457 | OFPPR_MODIFY); | |
064af421 BP |
3458 | } |
3459 | } | |
3460 | ||
90bf1e07 | 3461 | static enum ofperr |
1c38055d JR |
3462 | port_mod_start(struct ofconn *ofconn, struct ofputil_port_mod *pm, |
3463 | struct ofport **port) | |
064af421 | 3464 | { |
64ff1d96 | 3465 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
1c38055d JR |
3466 | |
3467 | *port = ofproto_get_port(p, pm->port_no); | |
3468 | if (!*port) { | |
3469 | return OFPERR_OFPPMFC_BAD_PORT; | |
3470 | } | |
3471 | if (!eth_addr_equals((*port)->pp.hw_addr, pm->hw_addr)) { | |
3472 | return OFPERR_OFPPMFC_BAD_HW_ADDR; | |
3473 | } | |
3474 | return 0; | |
3475 | } | |
3476 | ||
3477 | static void | |
3478 | port_mod_finish(struct ofconn *ofconn, struct ofputil_port_mod *pm, | |
3479 | struct ofport *port) | |
3480 | { | |
3481 | update_port_config(ofconn, port, pm->config, pm->mask); | |
3482 | if (pm->advertise) { | |
3483 | netdev_set_advertisements(port->netdev, pm->advertise); | |
3484 | } | |
3485 | } | |
3486 | ||
3487 | static enum ofperr | |
3488 | handle_port_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
3489 | { | |
9e1fd49b | 3490 | struct ofputil_port_mod pm; |
064af421 | 3491 | struct ofport *port; |
9e1fd49b | 3492 | enum ofperr error; |
064af421 | 3493 | |
76589937 | 3494 | error = reject_slave_controller(ofconn); |
9deba63b BP |
3495 | if (error) { |
3496 | return error; | |
3497 | } | |
064af421 | 3498 | |
18cc69d9 | 3499 | error = ofputil_decode_port_mod(oh, &pm, false); |
9e1fd49b BP |
3500 | if (error) { |
3501 | return error; | |
3502 | } | |
3503 | ||
1c38055d JR |
3504 | error = port_mod_start(ofconn, &pm, &port); |
3505 | if (!error) { | |
3506 | port_mod_finish(ofconn, &pm, port); | |
064af421 | 3507 | } |
1c38055d | 3508 | return error; |
064af421 BP |
3509 | } |
3510 | ||
90bf1e07 | 3511 | static enum ofperr |
3269c562 | 3512 | handle_desc_stats_request(struct ofconn *ofconn, |
982697a4 | 3513 | const struct ofp_header *request) |
064af421 | 3514 | { |
061bfea4 BP |
3515 | static const char *default_mfr_desc = "Nicira, Inc."; |
3516 | static const char *default_hw_desc = "Open vSwitch"; | |
3517 | static const char *default_sw_desc = VERSION; | |
3518 | static const char *default_serial_desc = "None"; | |
3519 | static const char *default_dp_desc = "None"; | |
3520 | ||
64ff1d96 | 3521 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 BP |
3522 | struct ofp_desc_stats *ods; |
3523 | struct ofpbuf *msg; | |
3524 | ||
982697a4 BP |
3525 | msg = ofpraw_alloc_stats_reply(request, 0); |
3526 | ods = ofpbuf_put_zeros(msg, sizeof *ods); | |
061bfea4 BP |
3527 | ovs_strlcpy(ods->mfr_desc, p->mfr_desc ? p->mfr_desc : default_mfr_desc, |
3528 | sizeof ods->mfr_desc); | |
3529 | ovs_strlcpy(ods->hw_desc, p->hw_desc ? p->hw_desc : default_hw_desc, | |
3530 | sizeof ods->hw_desc); | |
3531 | ovs_strlcpy(ods->sw_desc, p->sw_desc ? p->sw_desc : default_sw_desc, | |
3532 | sizeof ods->sw_desc); | |
3533 | ovs_strlcpy(ods->serial_num, | |
3534 | p->serial_desc ? p->serial_desc : default_serial_desc, | |
3535 | sizeof ods->serial_num); | |
3536 | ovs_strlcpy(ods->dp_desc, p->dp_desc ? p->dp_desc : default_dp_desc, | |
3537 | sizeof ods->dp_desc); | |
b0421aa2 | 3538 | ofconn_send_reply(ofconn, msg); |
064af421 BP |
3539 | |
3540 | return 0; | |
3541 | } | |
3542 | ||
90bf1e07 | 3543 | static enum ofperr |
3269c562 | 3544 | handle_table_stats_request(struct ofconn *ofconn, |
982697a4 | 3545 | const struct ofp_header *request) |
064af421 | 3546 | { |
3c1bb396 BP |
3547 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
3548 | struct ofputil_table_features *features; | |
08d1e234 | 3549 | struct ofputil_table_stats *stats; |
3c1bb396 | 3550 | struct ofpbuf *reply; |
6c1491fb | 3551 | size_t i; |
064af421 | 3552 | |
3c1bb396 | 3553 | query_tables(ofproto, &features, &stats); |
254750ce | 3554 | |
3c1bb396 BP |
3555 | reply = ofputil_encode_table_stats_reply(request); |
3556 | for (i = 0; i < ofproto->n_tables; i++) { | |
3557 | if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) { | |
3558 | ofputil_append_table_stats_reply(reply, &stats[i], &features[i]); | |
254750ce BP |
3559 | } |
3560 | } | |
3c1bb396 | 3561 | ofconn_send_reply(ofconn, reply); |
254750ce | 3562 | |
3c1bb396 | 3563 | free(features); |
08d1e234 | 3564 | free(stats); |
307975da | 3565 | |
064af421 BP |
3566 | return 0; |
3567 | } | |
3568 | ||
3c4e10fb BP |
3569 | static enum ofperr |
3570 | handle_table_features_request(struct ofconn *ofconn, | |
3571 | const struct ofp_header *request) | |
3572 | { | |
3573 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
0a2869d5 BP |
3574 | struct ofpbuf msg = ofpbuf_const_initializer(request, |
3575 | ntohs(request->length)); | |
3c4e10fb | 3576 | ofpraw_pull_assert(&msg); |
6fd6ed71 | 3577 | if (msg.size || ofpmp_more(request)) { |
3c4e10fb BP |
3578 | return OFPERR_OFPTFFC_EPERM; |
3579 | } | |
3580 | ||
0a2869d5 | 3581 | struct ofputil_table_features *features; |
3c4e10fb BP |
3582 | query_tables(ofproto, &features, NULL); |
3583 | ||
0a2869d5 | 3584 | struct ovs_list replies; |
3c4e10fb | 3585 | ofpmp_init(&replies, request); |
0a2869d5 | 3586 | for (size_t i = 0; i < ofproto->n_tables; i++) { |
3c4e10fb BP |
3587 | if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) { |
3588 | ofputil_append_table_features_reply(&features[i], &replies); | |
3589 | } | |
3590 | } | |
3591 | ofconn_send_replies(ofconn, &replies); | |
3592 | ||
3593 | free(features); | |
3594 | ||
3595 | return 0; | |
3596 | } | |
3597 | ||
6c6eedc5 SJ |
3598 | /* Returns the vacancy of 'oftable', a number that ranges from 0 (if the table |
3599 | * is full) to 100 (if the table is empty). | |
3600 | * | |
3601 | * A table without a limit on flows is considered to be empty. */ | |
3602 | static uint8_t | |
3603 | oftable_vacancy(const struct oftable *t) | |
3604 | { | |
3605 | return (!t->max_flows ? 100 | |
3606 | : t->n_flows >= t->max_flows ? 0 | |
3607 | : (t->max_flows - t->n_flows) * 100.0 / t->max_flows); | |
3608 | } | |
3609 | ||
bab86012 SJ |
3610 | static void |
3611 | query_table_desc__(struct ofputil_table_desc *td, | |
3612 | struct ofproto *ofproto, uint8_t table_id) | |
3613 | { | |
6c6eedc5 | 3614 | const struct oftable *t = &ofproto->tables[table_id]; |
bab86012 SJ |
3615 | |
3616 | td->table_id = table_id; | |
6c6eedc5 | 3617 | td->eviction = (t->eviction & EVICTION_OPENFLOW |
bab86012 SJ |
3618 | ? OFPUTIL_TABLE_EVICTION_ON |
3619 | : OFPUTIL_TABLE_EVICTION_OFF); | |
3620 | td->eviction_flags = OFPROTO_EVICTION_FLAGS; | |
6c6eedc5 | 3621 | td->vacancy = (t->vacancy_event |
bab86012 SJ |
3622 | ? OFPUTIL_TABLE_VACANCY_ON |
3623 | : OFPUTIL_TABLE_VACANCY_OFF); | |
6c6eedc5 SJ |
3624 | td->table_vacancy.vacancy_down = t->vacancy_down; |
3625 | td->table_vacancy.vacancy_up = t->vacancy_up; | |
3626 | td->table_vacancy.vacancy = oftable_vacancy(t); | |
bab86012 SJ |
3627 | } |
3628 | ||
03c72922 BP |
3629 | /* This function queries the database for dumping table-desc. */ |
3630 | static void | |
3631 | query_tables_desc(struct ofproto *ofproto, struct ofputil_table_desc **descp) | |
3632 | { | |
3633 | struct ofputil_table_desc *table_desc; | |
3634 | size_t i; | |
3635 | ||
3636 | table_desc = *descp = xcalloc(ofproto->n_tables, sizeof *table_desc); | |
3637 | for (i = 0; i < ofproto->n_tables; i++) { | |
3638 | struct ofputil_table_desc *td = &table_desc[i]; | |
bab86012 | 3639 | query_table_desc__(td, ofproto, i); |
03c72922 BP |
3640 | } |
3641 | } | |
3642 | ||
3643 | /* Function to handle dump-table-desc request. */ | |
3644 | static enum ofperr | |
3645 | handle_table_desc_request(struct ofconn *ofconn, | |
3646 | const struct ofp_header *request) | |
3647 | { | |
3648 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
3649 | struct ofputil_table_desc *table_desc; | |
3650 | struct ovs_list replies; | |
3651 | size_t i; | |
3652 | ||
3653 | query_tables_desc(ofproto, &table_desc); | |
3654 | ofpmp_init(&replies, request); | |
3655 | for (i = 0; i < ofproto->n_tables; i++) { | |
3656 | if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) { | |
3657 | ofputil_append_table_desc_reply(&table_desc[i], &replies, | |
3658 | request->version); | |
3659 | } | |
3660 | } | |
3661 | ofconn_send_replies(ofconn, &replies); | |
3662 | free(table_desc); | |
3663 | return 0; | |
3664 | } | |
3665 | ||
6c6eedc5 SJ |
3666 | /* This function determines and sends the vacancy event, based on the value |
3667 | * of current vacancy and threshold vacancy. If the current vacancy is less | |
3668 | * than or equal to vacancy_down, vacancy up events must be enabled, and when | |
3669 | * the current vacancy is greater or equal to vacancy_up, vacancy down events | |
3670 | * must be enabled. */ | |
3671 | static void | |
3672 | send_table_status(struct ofproto *ofproto, uint8_t table_id) | |
3673 | { | |
3674 | struct oftable *t = &ofproto->tables[table_id]; | |
3675 | if (!t->vacancy_event) { | |
3676 | return; | |
3677 | } | |
3678 | ||
3679 | uint8_t vacancy = oftable_vacancy(t); | |
3680 | enum ofp14_table_reason event; | |
3681 | if (vacancy < t->vacancy_down) { | |
3682 | event = OFPTR_VACANCY_DOWN; | |
3683 | } else if (vacancy > t->vacancy_up) { | |
3684 | event = OFPTR_VACANCY_UP; | |
3685 | } else { | |
3686 | return; | |
3687 | } | |
3688 | ||
3689 | if (event == t->vacancy_event) { | |
3690 | struct ofputil_table_desc td; | |
3691 | query_table_desc__(&td, ofproto, table_id); | |
3692 | connmgr_send_table_status(ofproto->connmgr, &td, event); | |
3693 | ||
3694 | t->vacancy_event = (event == OFPTR_VACANCY_DOWN | |
3695 | ? OFPTR_VACANCY_UP | |
3696 | : OFPTR_VACANCY_DOWN); | |
3697 | } | |
3698 | } | |
3699 | ||
abaad8cf | 3700 | static void |
ca6ba700 | 3701 | append_port_stat(struct ofport *port, struct ovs_list *replies) |
abaad8cf | 3702 | { |
f8e4867e | 3703 | struct ofputil_port_stats ops = { .port_no = port->pp.port_no }; |
abaad8cf | 3704 | |
65e0be10 BP |
3705 | calc_duration(port->created, time_msec(), |
3706 | &ops.duration_sec, &ops.duration_nsec); | |
3707 | ||
d295e8e9 JP |
3708 | /* Intentionally ignore return value, since errors will set |
3709 | * 'stats' to all-1s, which is correct for OpenFlow, and | |
abaad8cf | 3710 | * netdev_get_stats() will log errors. */ |
f8e4867e SH |
3711 | ofproto_port_get_stats(port, &ops.stats); |
3712 | ||
3713 | ofputil_append_port_stat(replies, &ops); | |
abaad8cf JP |
3714 | } |
3715 | ||
70ae4f93 BP |
3716 | static void |
3717 | handle_port_request(struct ofconn *ofconn, | |
3718 | const struct ofp_header *request, ofp_port_t port_no, | |
ca6ba700 | 3719 | void (*cb)(struct ofport *, struct ovs_list *replies)) |
064af421 | 3720 | { |
70ae4f93 | 3721 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 | 3722 | struct ofport *port; |
ca6ba700 | 3723 | struct ovs_list replies; |
064af421 | 3724 | |
982697a4 | 3725 | ofpmp_init(&replies, request); |
7f05e7ab | 3726 | if (port_no != OFPP_ANY) { |
70ae4f93 | 3727 | port = ofproto_get_port(ofproto, port_no); |
abaad8cf | 3728 | if (port) { |
70ae4f93 | 3729 | cb(port, &replies); |
abaad8cf JP |
3730 | } |
3731 | } else { | |
70ae4f93 BP |
3732 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
3733 | cb(port, &replies); | |
abaad8cf | 3734 | } |
064af421 BP |
3735 | } |
3736 | ||
63f2140a | 3737 | ofconn_send_replies(ofconn, &replies); |
70ae4f93 BP |
3738 | } |
3739 | ||
3740 | static enum ofperr | |
3741 | handle_port_stats_request(struct ofconn *ofconn, | |
3742 | const struct ofp_header *request) | |
3743 | { | |
3744 | ofp_port_t port_no; | |
3745 | enum ofperr error; | |
3746 | ||
3747 | error = ofputil_decode_port_stats_request(request, &port_no); | |
3748 | if (!error) { | |
3749 | handle_port_request(ofconn, request, port_no, append_port_stat); | |
3750 | } | |
3751 | return error; | |
3752 | } | |
3753 | ||
3754 | static void | |
ca6ba700 | 3755 | append_port_desc(struct ofport *port, struct ovs_list *replies) |
70ae4f93 BP |
3756 | { |
3757 | ofputil_append_port_desc_stats_reply(&port->pp, replies); | |
064af421 BP |
3758 | } |
3759 | ||
2be393ed JP |
3760 | static enum ofperr |
3761 | handle_port_desc_stats_request(struct ofconn *ofconn, | |
982697a4 | 3762 | const struct ofp_header *request) |
2be393ed | 3763 | { |
70ae4f93 BP |
3764 | ofp_port_t port_no; |
3765 | enum ofperr error; | |
2be393ed | 3766 | |
70ae4f93 BP |
3767 | error = ofputil_decode_port_desc_stats_request(request, &port_no); |
3768 | if (!error) { | |
3769 | handle_port_request(ofconn, request, port_no, append_port_desc); | |
2be393ed | 3770 | } |
70ae4f93 | 3771 | return error; |
2be393ed JP |
3772 | } |
3773 | ||
98eaac36 JR |
3774 | static uint32_t |
3775 | hash_cookie(ovs_be64 cookie) | |
3776 | { | |
965607c8 | 3777 | return hash_uint64((OVS_FORCE uint64_t)cookie); |
98eaac36 JR |
3778 | } |
3779 | ||
3780 | static void | |
3781 | cookies_insert(struct ofproto *ofproto, struct rule *rule) | |
2c916028 | 3782 | OVS_REQUIRES(ofproto_mutex) |
98eaac36 JR |
3783 | { |
3784 | hindex_insert(&ofproto->cookies, &rule->cookie_node, | |
3785 | hash_cookie(rule->flow_cookie)); | |
3786 | } | |
3787 | ||
3788 | static void | |
3789 | cookies_remove(struct ofproto *ofproto, struct rule *rule) | |
2c916028 | 3790 | OVS_REQUIRES(ofproto_mutex) |
98eaac36 JR |
3791 | { |
3792 | hindex_remove(&ofproto->cookies, &rule->cookie_node); | |
3793 | } | |
3794 | ||
c6ebb8fb | 3795 | static void |
65e0be10 BP |
3796 | calc_duration(long long int start, long long int now, |
3797 | uint32_t *sec, uint32_t *nsec) | |
c6ebb8fb | 3798 | { |
f27f2134 | 3799 | long long int msecs = now - start; |
588cd7b5 BP |
3800 | *sec = msecs / 1000; |
3801 | *nsec = (msecs % 1000) * (1000 * 1000); | |
3802 | } | |
3803 | ||
48266274 | 3804 | /* Checks whether 'table_id' is 0xff or a valid table ID in 'ofproto'. Returns |
554764d1 SH |
3805 | * true if 'table_id' is OK, false otherwise. */ |
3806 | static bool | |
48266274 BP |
3807 | check_table_id(const struct ofproto *ofproto, uint8_t table_id) |
3808 | { | |
554764d1 | 3809 | return table_id == OFPTT_ALL || table_id < ofproto->n_tables; |
48266274 BP |
3810 | } |
3811 | ||
5c67e4af | 3812 | static struct oftable * |
d4ce8a49 | 3813 | next_visible_table(const struct ofproto *ofproto, uint8_t table_id) |
5c67e4af BP |
3814 | { |
3815 | struct oftable *table; | |
3816 | ||
3817 | for (table = &ofproto->tables[table_id]; | |
3818 | table < &ofproto->tables[ofproto->n_tables]; | |
3819 | table++) { | |
3820 | if (!(table->flags & OFTABLE_HIDDEN)) { | |
3821 | return table; | |
3822 | } | |
3823 | } | |
3824 | ||
3825 | return NULL; | |
3826 | } | |
3827 | ||
d0918789 | 3828 | static struct oftable * |
d4ce8a49 | 3829 | first_matching_table(const struct ofproto *ofproto, uint8_t table_id) |
064af421 | 3830 | { |
6c1491fb | 3831 | if (table_id == 0xff) { |
5c67e4af | 3832 | return next_visible_table(ofproto, 0); |
6c1491fb BP |
3833 | } else if (table_id < ofproto->n_tables) { |
3834 | return &ofproto->tables[table_id]; | |
a02e5331 | 3835 | } else { |
6c1491fb | 3836 | return NULL; |
a02e5331 | 3837 | } |
064af421 BP |
3838 | } |
3839 | ||
d0918789 | 3840 | static struct oftable * |
d4ce8a49 BP |
3841 | next_matching_table(const struct ofproto *ofproto, |
3842 | const struct oftable *table, uint8_t table_id) | |
6c1491fb | 3843 | { |
5c67e4af BP |
3844 | return (table_id == 0xff |
3845 | ? next_visible_table(ofproto, (table - ofproto->tables) + 1) | |
6c1491fb BP |
3846 | : NULL); |
3847 | } | |
3848 | ||
d0918789 | 3849 | /* Assigns TABLE to each oftable, in turn, that matches TABLE_ID in OFPROTO: |
6c1491fb BP |
3850 | * |
3851 | * - If TABLE_ID is 0xff, this iterates over every classifier table in | |
5c67e4af | 3852 | * OFPROTO, skipping tables marked OFTABLE_HIDDEN. |
6c1491fb BP |
3853 | * |
3854 | * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates | |
5c67e4af BP |
3855 | * only once, for that table. (This can be used to access tables marked |
3856 | * OFTABLE_HIDDEN.) | |
6c1491fb | 3857 | * |
48266274 BP |
3858 | * - Otherwise, TABLE_ID isn't valid for OFPROTO, so the loop won't be |
3859 | * entered at all. (Perhaps you should have validated TABLE_ID with | |
3860 | * check_table_id().) | |
6c1491fb BP |
3861 | * |
3862 | * All parameters are evaluated multiple times. | |
3863 | */ | |
d0918789 BP |
3864 | #define FOR_EACH_MATCHING_TABLE(TABLE, TABLE_ID, OFPROTO) \ |
3865 | for ((TABLE) = first_matching_table(OFPROTO, TABLE_ID); \ | |
3866 | (TABLE) != NULL; \ | |
3867 | (TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID)) | |
6c1491fb | 3868 | |
a9b22b7f BP |
3869 | /* Initializes 'criteria' in a straightforward way based on the other |
3870 | * parameters. | |
3871 | * | |
dd51dae2 BP |
3872 | * By default, the criteria include flows that are read-only, on the assumption |
3873 | * that the collected flows won't be modified. Call rule_criteria_require_rw() | |
3874 | * if flows will be modified. | |
3875 | * | |
a9b22b7f BP |
3876 | * For "loose" matching, the 'priority' parameter is unimportant and may be |
3877 | * supplied as 0. */ | |
3878 | static void | |
3879 | rule_criteria_init(struct rule_criteria *criteria, uint8_t table_id, | |
18721c4a JR |
3880 | const struct match *match, int priority, |
3881 | cls_version_t version, ovs_be64 cookie, | |
3882 | ovs_be64 cookie_mask, ofp_port_t out_port, | |
3883 | uint32_t out_group) | |
a9b22b7f BP |
3884 | { |
3885 | criteria->table_id = table_id; | |
bd53aa17 JR |
3886 | cls_rule_init(&criteria->cr, match, priority); |
3887 | criteria->version = version; | |
a9b22b7f BP |
3888 | criteria->cookie = cookie; |
3889 | criteria->cookie_mask = cookie_mask; | |
3890 | criteria->out_port = out_port; | |
3891 | criteria->out_group = out_group; | |
dd51dae2 BP |
3892 | |
3893 | /* We ordinarily want to skip hidden rules, but there has to be a way for | |
3894 | * code internal to OVS to modify and delete them, so if the criteria | |
3895 | * specify a priority that can only be for a hidden flow, then allow hidden | |
3896 | * rules to be selected. (This doesn't allow OpenFlow clients to meddle | |
3897 | * with hidden flows because OpenFlow uses only a 16-bit field to specify | |
3898 | * priority.) */ | |
3899 | criteria->include_hidden = priority > UINT16_MAX; | |
3900 | ||
3901 | /* We assume that the criteria are being used to collect flows for reading | |
3902 | * but not modification. Thus, we should collect read-only flows. */ | |
3903 | criteria->include_readonly = true; | |
3904 | } | |
3905 | ||
3906 | /* By default, criteria initialized by rule_criteria_init() will match flows | |
3907 | * that are read-only, on the assumption that the collected flows won't be | |
3908 | * modified. Call this function to match only flows that are be modifiable. | |
3909 | * | |
3910 | * Specify 'can_write_readonly' as false in ordinary circumstances, true if the | |
3911 | * caller has special privileges that allow it to modify even "read-only" | |
3912 | * flows. */ | |
3913 | static void | |
3914 | rule_criteria_require_rw(struct rule_criteria *criteria, | |
3915 | bool can_write_readonly) | |
3916 | { | |
3917 | criteria->include_readonly = can_write_readonly; | |
a9b22b7f BP |
3918 | } |
3919 | ||
3920 | static void | |
3921 | rule_criteria_destroy(struct rule_criteria *criteria) | |
3922 | { | |
3923 | cls_rule_destroy(&criteria->cr); | |
3924 | } | |
3925 | ||
a8e547c1 BP |
3926 | void |
3927 | rule_collection_init(struct rule_collection *rules) | |
3928 | { | |
3929 | rules->rules = rules->stub; | |
3930 | rules->n = 0; | |
3931 | rules->capacity = ARRAY_SIZE(rules->stub); | |
3932 | } | |
3933 | ||
3934 | void | |
3935 | rule_collection_add(struct rule_collection *rules, struct rule *rule) | |
3936 | { | |
3937 | if (rules->n >= rules->capacity) { | |
3938 | size_t old_size, new_size; | |
3939 | ||
3940 | old_size = rules->capacity * sizeof *rules->rules; | |
3941 | rules->capacity *= 2; | |
3942 | new_size = rules->capacity * sizeof *rules->rules; | |
3943 | ||
3944 | if (rules->rules == rules->stub) { | |
3945 | rules->rules = xmalloc(new_size); | |
3946 | memcpy(rules->rules, rules->stub, old_size); | |
3947 | } else { | |
3948 | rules->rules = xrealloc(rules->rules, new_size); | |
3949 | } | |
3950 | } | |
3951 | ||
3952 | rules->rules[rules->n++] = rule; | |
3953 | } | |
3954 | ||
15aaf599 BP |
3955 | void |
3956 | rule_collection_ref(struct rule_collection *rules) | |
3957 | OVS_REQUIRES(ofproto_mutex) | |
3958 | { | |
3959 | size_t i; | |
3960 | ||
3961 | for (i = 0; i < rules->n; i++) { | |
3962 | ofproto_rule_ref(rules->rules[i]); | |
3963 | } | |
3964 | } | |
3965 | ||
3966 | void | |
3967 | rule_collection_unref(struct rule_collection *rules) | |
3968 | { | |
3969 | size_t i; | |
3970 | ||
3971 | for (i = 0; i < rules->n; i++) { | |
3972 | ofproto_rule_unref(rules->rules[i]); | |
3973 | } | |
3974 | } | |
3975 | ||
39c94593 JR |
3976 | /* Returns a NULL-terminated array of rule pointers, |
3977 | * destroys 'rules'. */ | |
3978 | static struct rule ** | |
3979 | rule_collection_detach(struct rule_collection *rules) | |
3980 | { | |
3981 | struct rule **rule_array; | |
3982 | ||
3983 | rule_collection_add(rules, NULL); | |
3984 | ||
3985 | if (rules->rules == rules->stub) { | |
3986 | rules->rules = xmemdup(rules->rules, rules->n * sizeof *rules->rules); | |
3987 | } | |
3988 | ||
3989 | rule_array = rules->rules; | |
3990 | rule_collection_init(rules); | |
3991 | ||
3992 | return rule_array; | |
3993 | } | |
3994 | ||
a8e547c1 BP |
3995 | void |
3996 | rule_collection_destroy(struct rule_collection *rules) | |
3997 | { | |
3998 | if (rules->rules != rules->stub) { | |
3999 | free(rules->rules); | |
4000 | } | |
bfd3dbf6 BP |
4001 | |
4002 | /* Make repeated destruction harmless. */ | |
4003 | rule_collection_init(rules); | |
a8e547c1 BP |
4004 | } |
4005 | ||
39c94593 JR |
4006 | /* Schedules postponed removal of rules, destroys 'rules'. */ |
4007 | static void | |
4008 | rule_collection_remove_postponed(struct rule_collection *rules) | |
4009 | OVS_REQUIRES(ofproto_mutex) | |
4010 | { | |
4011 | if (rules->n > 0) { | |
4012 | if (rules->n == 1) { | |
4013 | ovsrcu_postpone(remove_rule_rcu, rules->rules[0]); | |
4014 | } else { | |
4015 | ovsrcu_postpone(remove_rules_rcu, rule_collection_detach(rules)); | |
4016 | } | |
4017 | } | |
4018 | } | |
4019 | ||
dd51dae2 BP |
4020 | /* Checks whether 'rule' matches 'c' and, if so, adds it to 'rules'. This |
4021 | * function verifies most of the criteria in 'c' itself, but the caller must | |
4022 | * check 'c->cr' itself. | |
4023 | * | |
2b7b1427 | 4024 | * Rules that have already been marked for removal are not collected. |
ce59413f | 4025 | * |
dd51dae2 | 4026 | * Increments '*n_readonly' if 'rule' wasn't added because it's read-only (and |
b20f4073 BP |
4027 | * 'c' only includes modifiable rules). */ |
4028 | static void | |
a9b22b7f | 4029 | collect_rule(struct rule *rule, const struct rule_criteria *c, |
dd51dae2 | 4030 | struct rule_collection *rules, size_t *n_readonly) |
15aaf599 | 4031 | OVS_REQUIRES(ofproto_mutex) |
6c1d7642 | 4032 | { |
dd51dae2 BP |
4033 | if ((c->table_id == rule->table_id || c->table_id == 0xff) |
4034 | && ofproto_rule_has_out_port(rule, c->out_port) | |
4035 | && ofproto_rule_has_out_group(rule, c->out_group) | |
4036 | && !((rule->flow_cookie ^ c->cookie) & c->cookie_mask) | |
ce59413f | 4037 | && (!rule_is_hidden(rule) || c->include_hidden) |
bd53aa17 | 4038 | && cls_rule_visible_in_version(&rule->cr, c->version)) { |
dd51dae2 | 4039 | /* Rule matches all the criteria... */ |
834fe5cb | 4040 | if (!rule_is_readonly(rule) || c->include_readonly) { |
dd51dae2 | 4041 | /* ...add it. */ |
a8e547c1 | 4042 | rule_collection_add(rules, rule); |
dd51dae2 BP |
4043 | } else { |
4044 | /* ...except it's read-only. */ | |
4045 | ++*n_readonly; | |
6c1d7642 | 4046 | } |
6c1d7642 BP |
4047 | } |
4048 | } | |
4049 | ||
a9b22b7f BP |
4050 | /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches |
4051 | * on classifiers rules are done in the "loose" way required for OpenFlow | |
4052 | * OFPFC_MODIFY and OFPFC_DELETE requests. Puts the selected rules on list | |
9ed18e46 BP |
4053 | * 'rules'. |
4054 | * | |
9ed18e46 | 4055 | * Returns 0 on success, otherwise an OpenFlow error code. */ |
90bf1e07 | 4056 | static enum ofperr |
a9b22b7f | 4057 | collect_rules_loose(struct ofproto *ofproto, |
a8e547c1 BP |
4058 | const struct rule_criteria *criteria, |
4059 | struct rule_collection *rules) | |
15aaf599 | 4060 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 4061 | { |
d0918789 | 4062 | struct oftable *table; |
554764d1 | 4063 | enum ofperr error = 0; |
dd51dae2 | 4064 | size_t n_readonly = 0; |
48266274 | 4065 | |
a8e547c1 BP |
4066 | rule_collection_init(rules); |
4067 | ||
554764d1 SH |
4068 | if (!check_table_id(ofproto, criteria->table_id)) { |
4069 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
a8e547c1 | 4070 | goto exit; |
48266274 | 4071 | } |
9ed18e46 | 4072 | |
b8266395 | 4073 | if (criteria->cookie_mask == OVS_BE64_MAX) { |
98eaac36 JR |
4074 | struct rule *rule; |
4075 | ||
a9b22b7f BP |
4076 | HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node, |
4077 | hash_cookie(criteria->cookie), | |
98eaac36 | 4078 | &ofproto->cookies) { |
a9b22b7f | 4079 | if (cls_rule_is_loose_match(&rule->cr, &criteria->cr.match)) { |
b20f4073 | 4080 | collect_rule(rule, criteria, rules, &n_readonly); |
98eaac36 JR |
4081 | } |
4082 | } | |
6c1d7642 | 4083 | } else { |
a9b22b7f | 4084 | FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) { |
6c1d7642 | 4085 | struct rule *rule; |
9ed18e46 | 4086 | |
bd53aa17 JR |
4087 | CLS_FOR_EACH_TARGET (rule, cr, &table->cls, &criteria->cr, |
4088 | criteria->version) { | |
b20f4073 | 4089 | collect_rule(rule, criteria, rules, &n_readonly); |
9ed18e46 BP |
4090 | } |
4091 | } | |
4092 | } | |
48d28ac1 | 4093 | |
a8e547c1 | 4094 | exit: |
dd51dae2 BP |
4095 | if (!error && !rules->n && n_readonly) { |
4096 | /* We didn't find any rules to modify. We did find some read-only | |
4097 | * rules that we're not allowed to modify, so report that. */ | |
4098 | error = OFPERR_OFPBRC_EPERM; | |
4099 | } | |
a8e547c1 BP |
4100 | if (error) { |
4101 | rule_collection_destroy(rules); | |
4102 | } | |
48d28ac1 | 4103 | return error; |
9ed18e46 BP |
4104 | } |
4105 | ||
a9b22b7f BP |
4106 | /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches |
4107 | * on classifiers rules are done in the "strict" way required for OpenFlow | |
4108 | * OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests. Puts the selected | |
4109 | * rules on list 'rules'. | |
9ed18e46 | 4110 | * |
9ed18e46 | 4111 | * Returns 0 on success, otherwise an OpenFlow error code. */ |
90bf1e07 | 4112 | static enum ofperr |
a9b22b7f | 4113 | collect_rules_strict(struct ofproto *ofproto, |
a8e547c1 BP |
4114 | const struct rule_criteria *criteria, |
4115 | struct rule_collection *rules) | |
15aaf599 | 4116 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 4117 | { |
d0918789 | 4118 | struct oftable *table; |
dd51dae2 | 4119 | size_t n_readonly = 0; |
d51c8b71 | 4120 | enum ofperr error = 0; |
48266274 | 4121 | |
a8e547c1 BP |
4122 | rule_collection_init(rules); |
4123 | ||
554764d1 SH |
4124 | if (!check_table_id(ofproto, criteria->table_id)) { |
4125 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
a8e547c1 | 4126 | goto exit; |
48266274 | 4127 | } |
9ed18e46 | 4128 | |
b8266395 | 4129 | if (criteria->cookie_mask == OVS_BE64_MAX) { |
98eaac36 JR |
4130 | struct rule *rule; |
4131 | ||
a9b22b7f BP |
4132 | HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node, |
4133 | hash_cookie(criteria->cookie), | |
98eaac36 | 4134 | &ofproto->cookies) { |
a9b22b7f | 4135 | if (cls_rule_equal(&rule->cr, &criteria->cr)) { |
b20f4073 | 4136 | collect_rule(rule, criteria, rules, &n_readonly); |
98eaac36 JR |
4137 | } |
4138 | } | |
6c1d7642 | 4139 | } else { |
a9b22b7f | 4140 | FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) { |
6c1d7642 | 4141 | struct rule *rule; |
9ed18e46 | 4142 | |
a9b22b7f | 4143 | rule = rule_from_cls_rule(classifier_find_rule_exactly( |
bd53aa17 JR |
4144 | &table->cls, &criteria->cr, |
4145 | criteria->version)); | |
6c1d7642 | 4146 | if (rule) { |
b20f4073 | 4147 | collect_rule(rule, criteria, rules, &n_readonly); |
9ed18e46 BP |
4148 | } |
4149 | } | |
4150 | } | |
48d28ac1 | 4151 | |
a8e547c1 | 4152 | exit: |
b20f4073 BP |
4153 | if (!error && !rules->n && n_readonly) { |
4154 | /* We didn't find any rules to modify. We did find some read-only | |
4155 | * rules that we're not allowed to modify, so report that. */ | |
4156 | error = OFPERR_OFPBRC_EPERM; | |
4157 | } | |
a8e547c1 BP |
4158 | if (error) { |
4159 | rule_collection_destroy(rules); | |
4160 | } | |
6c1d7642 | 4161 | return error; |
9ed18e46 BP |
4162 | } |
4163 | ||
f27f2134 BP |
4164 | /* Returns 'age_ms' (a duration in milliseconds), converted to seconds and |
4165 | * forced into the range of a uint16_t. */ | |
4166 | static int | |
4167 | age_secs(long long int age_ms) | |
4168 | { | |
4169 | return (age_ms < 0 ? 0 | |
4170 | : age_ms >= UINT16_MAX * 1000 ? UINT16_MAX | |
4171 | : (unsigned int) age_ms / 1000); | |
4172 | } | |
4173 | ||
90bf1e07 | 4174 | static enum ofperr |
63f2140a | 4175 | handle_flow_stats_request(struct ofconn *ofconn, |
982697a4 | 4176 | const struct ofp_header *request) |
15aaf599 | 4177 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 4178 | { |
64ff1d96 | 4179 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 4180 | struct ofputil_flow_stats_request fsr; |
a9b22b7f | 4181 | struct rule_criteria criteria; |
a8e547c1 | 4182 | struct rule_collection rules; |
ca6ba700 | 4183 | struct ovs_list replies; |
90bf1e07 | 4184 | enum ofperr error; |
a8e547c1 | 4185 | size_t i; |
09246b99 | 4186 | |
982697a4 | 4187 | error = ofputil_decode_flow_stats_request(&fsr, request); |
09246b99 BP |
4188 | if (error) { |
4189 | return error; | |
4190 | } | |
4191 | ||
2b7b1427 JR |
4192 | rule_criteria_init(&criteria, fsr.table_id, &fsr.match, 0, CLS_MAX_VERSION, |
4193 | fsr.cookie, fsr.cookie_mask, fsr.out_port, | |
4194 | fsr.out_group); | |
15aaf599 BP |
4195 | |
4196 | ovs_mutex_lock(&ofproto_mutex); | |
a9b22b7f BP |
4197 | error = collect_rules_loose(ofproto, &criteria, &rules); |
4198 | rule_criteria_destroy(&criteria); | |
15aaf599 BP |
4199 | if (!error) { |
4200 | rule_collection_ref(&rules); | |
4201 | } | |
4202 | ovs_mutex_unlock(&ofproto_mutex); | |
4203 | ||
9ed18e46 BP |
4204 | if (error) { |
4205 | return error; | |
4206 | } | |
5ecc9d81 | 4207 | |
982697a4 | 4208 | ofpmp_init(&replies, request); |
a8e547c1 BP |
4209 | for (i = 0; i < rules.n; i++) { |
4210 | struct rule *rule = rules.rules[i]; | |
f27f2134 | 4211 | long long int now = time_msec(); |
9ed18e46 | 4212 | struct ofputil_flow_stats fs; |
15aaf599 | 4213 | long long int created, used, modified; |
dc723c44 | 4214 | const struct rule_actions *actions; |
15aaf599 | 4215 | enum ofputil_flow_mod_flags flags; |
a3779dbc | 4216 | |
d10976b7 | 4217 | ovs_mutex_lock(&rule->mutex); |
15aaf599 | 4218 | fs.cookie = rule->flow_cookie; |
a3779dbc EJ |
4219 | fs.idle_timeout = rule->idle_timeout; |
4220 | fs.hard_timeout = rule->hard_timeout; | |
ca26eb44 | 4221 | fs.importance = rule->importance; |
15aaf599 | 4222 | created = rule->created; |
15aaf599 | 4223 | modified = rule->modified; |
06a0f3e2 | 4224 | actions = rule_get_actions(rule); |
15aaf599 | 4225 | flags = rule->flags; |
d10976b7 | 4226 | ovs_mutex_unlock(&rule->mutex); |
a3779dbc | 4227 | |
dc437090 JR |
4228 | ofproto->ofproto_class->rule_get_stats(rule, &fs.packet_count, |
4229 | &fs.byte_count, &used); | |
4230 | ||
15aaf599 BP |
4231 | minimatch_expand(&rule->cr.match, &fs.match); |
4232 | fs.table_id = rule->table_id; | |
4233 | calc_duration(created, now, &fs.duration_sec, &fs.duration_nsec); | |
4234 | fs.priority = rule->cr.priority; | |
4235 | fs.idle_age = age_secs(now - used); | |
4236 | fs.hard_age = age_secs(now - modified); | |
15aaf599 BP |
4237 | fs.ofpacts = actions->ofpacts; |
4238 | fs.ofpacts_len = actions->ofpacts_len; | |
3f517bcd | 4239 | |
15aaf599 | 4240 | fs.flags = flags; |
9ed18e46 | 4241 | ofputil_append_flow_stats_reply(&fs, &replies); |
3c4486a5 | 4242 | } |
15aaf599 BP |
4243 | |
4244 | rule_collection_unref(&rules); | |
a8e547c1 BP |
4245 | rule_collection_destroy(&rules); |
4246 | ||
63f2140a | 4247 | ofconn_send_replies(ofconn, &replies); |
5ecc9d81 | 4248 | |
09246b99 BP |
4249 | return 0; |
4250 | } | |
4251 | ||
4f2cad2c | 4252 | static void |
3394b5b6 | 4253 | flow_stats_ds(struct rule *rule, struct ds *results) |
4f2cad2c | 4254 | { |
4f2cad2c | 4255 | uint64_t packet_count, byte_count; |
dc723c44 | 4256 | const struct rule_actions *actions; |
dc437090 | 4257 | long long int created, used; |
4f2cad2c | 4258 | |
dc437090 JR |
4259 | rule->ofproto->ofproto_class->rule_get_stats(rule, &packet_count, |
4260 | &byte_count, &used); | |
4f2cad2c | 4261 | |
15aaf599 | 4262 | ovs_mutex_lock(&rule->mutex); |
06a0f3e2 | 4263 | actions = rule_get_actions(rule); |
15aaf599 BP |
4264 | created = rule->created; |
4265 | ovs_mutex_unlock(&rule->mutex); | |
4266 | ||
6c1491fb BP |
4267 | if (rule->table_id != 0) { |
4268 | ds_put_format(results, "table_id=%"PRIu8", ", rule->table_id); | |
4269 | } | |
15aaf599 | 4270 | ds_put_format(results, "duration=%llds, ", (time_msec() - created) / 1000); |
4f2cad2c JP |
4271 | ds_put_format(results, "n_packets=%"PRIu64", ", packet_count); |
4272 | ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count); | |
cb833cf6 | 4273 | cls_rule_format(&rule->cr, results); |
a5df0e72 | 4274 | ds_put_char(results, ','); |
15aaf599 | 4275 | |
455ecd77 | 4276 | ds_put_cstr(results, "actions="); |
15aaf599 BP |
4277 | ofpacts_format(actions->ofpacts, actions->ofpacts_len, results); |
4278 | ||
4f2cad2c JP |
4279 | ds_put_cstr(results, "\n"); |
4280 | } | |
4281 | ||
d295e8e9 | 4282 | /* Adds a pretty-printed description of all flows to 'results', including |
ee8b231c | 4283 | * hidden flows (e.g., set up by in-band control). */ |
4f2cad2c JP |
4284 | void |
4285 | ofproto_get_all_flows(struct ofproto *p, struct ds *results) | |
4286 | { | |
d0918789 | 4287 | struct oftable *table; |
6c1491fb | 4288 | |
d0918789 | 4289 | OFPROTO_FOR_EACH_TABLE (table, p) { |
6c1491fb | 4290 | struct rule *rule; |
064af421 | 4291 | |
5f0476ce | 4292 | CLS_FOR_EACH (rule, cr, &table->cls) { |
6c1491fb BP |
4293 | flow_stats_ds(rule, results); |
4294 | } | |
064af421 | 4295 | } |
064af421 BP |
4296 | } |
4297 | ||
b5827b24 BP |
4298 | /* Obtains the NetFlow engine type and engine ID for 'ofproto' into |
4299 | * '*engine_type' and '*engine_id', respectively. */ | |
4300 | void | |
4301 | ofproto_get_netflow_ids(const struct ofproto *ofproto, | |
4302 | uint8_t *engine_type, uint8_t *engine_id) | |
4303 | { | |
abe529af | 4304 | ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id); |
b5827b24 BP |
4305 | } |
4306 | ||
8f5514fe AW |
4307 | /* Checks the status change of CFM on 'ofport'. |
4308 | * | |
4309 | * Returns true if 'ofproto_class' does not support 'cfm_status_changed'. */ | |
4310 | bool | |
4311 | ofproto_port_cfm_status_changed(struct ofproto *ofproto, ofp_port_t ofp_port) | |
4312 | { | |
4313 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
4314 | return (ofport && ofproto->ofproto_class->cfm_status_changed | |
4315 | ? ofproto->ofproto_class->cfm_status_changed(ofport) | |
4316 | : true); | |
4317 | } | |
4318 | ||
88bf179a AW |
4319 | /* Checks the status of CFM configured on 'ofp_port' within 'ofproto'. |
4320 | * Returns 0 if the port's CFM status was successfully stored into | |
4321 | * '*status'. Returns positive errno if the port did not have CFM | |
8f5514fe | 4322 | * configured. |
9a9e3786 | 4323 | * |
88bf179a AW |
4324 | * The caller must provide and own '*status', and must free 'status->rmps'. |
4325 | * '*status' is indeterminate if the return value is non-zero. */ | |
4326 | int | |
4e022ec0 | 4327 | ofproto_port_get_cfm_status(const struct ofproto *ofproto, ofp_port_t ofp_port, |
685acfd9 | 4328 | struct cfm_status *status) |
3967a833 MM |
4329 | { |
4330 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
88bf179a AW |
4331 | return (ofport && ofproto->ofproto_class->get_cfm_status |
4332 | ? ofproto->ofproto_class->get_cfm_status(ofport, status) | |
4333 | : EOPNOTSUPP); | |
3967a833 MM |
4334 | } |
4335 | ||
90bf1e07 | 4336 | static enum ofperr |
76c93b22 | 4337 | handle_aggregate_stats_request(struct ofconn *ofconn, |
982697a4 | 4338 | const struct ofp_header *oh) |
15aaf599 | 4339 | OVS_EXCLUDED(ofproto_mutex) |
27d34fce | 4340 | { |
76c93b22 | 4341 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 4342 | struct ofputil_flow_stats_request request; |
76c93b22 | 4343 | struct ofputil_aggregate_stats stats; |
5e9d0469 | 4344 | bool unknown_packets, unknown_bytes; |
a9b22b7f | 4345 | struct rule_criteria criteria; |
a8e547c1 | 4346 | struct rule_collection rules; |
76c93b22 | 4347 | struct ofpbuf *reply; |
90bf1e07 | 4348 | enum ofperr error; |
a8e547c1 | 4349 | size_t i; |
27d34fce | 4350 | |
982697a4 | 4351 | error = ofputil_decode_flow_stats_request(&request, oh); |
76c93b22 BP |
4352 | if (error) { |
4353 | return error; | |
4354 | } | |
5ecc9d81 | 4355 | |
a9b22b7f | 4356 | rule_criteria_init(&criteria, request.table_id, &request.match, 0, |
2b7b1427 | 4357 | CLS_MAX_VERSION, request.cookie, request.cookie_mask, |
a9b22b7f | 4358 | request.out_port, request.out_group); |
15aaf599 BP |
4359 | |
4360 | ovs_mutex_lock(&ofproto_mutex); | |
a9b22b7f BP |
4361 | error = collect_rules_loose(ofproto, &criteria, &rules); |
4362 | rule_criteria_destroy(&criteria); | |
15aaf599 BP |
4363 | if (!error) { |
4364 | rule_collection_ref(&rules); | |
4365 | } | |
4366 | ovs_mutex_unlock(&ofproto_mutex); | |
4367 | ||
9ed18e46 BP |
4368 | if (error) { |
4369 | return error; | |
4370 | } | |
3c4486a5 | 4371 | |
9ed18e46 | 4372 | memset(&stats, 0, sizeof stats); |
5e9d0469 | 4373 | unknown_packets = unknown_bytes = false; |
a8e547c1 BP |
4374 | for (i = 0; i < rules.n; i++) { |
4375 | struct rule *rule = rules.rules[i]; | |
9ed18e46 BP |
4376 | uint64_t packet_count; |
4377 | uint64_t byte_count; | |
dc437090 | 4378 | long long int used; |
5ecc9d81 | 4379 | |
9ed18e46 | 4380 | ofproto->ofproto_class->rule_get_stats(rule, &packet_count, |
dc437090 | 4381 | &byte_count, &used); |
5ecc9d81 | 4382 | |
5e9d0469 BP |
4383 | if (packet_count == UINT64_MAX) { |
4384 | unknown_packets = true; | |
4385 | } else { | |
4386 | stats.packet_count += packet_count; | |
4387 | } | |
4388 | ||
4389 | if (byte_count == UINT64_MAX) { | |
4390 | unknown_bytes = true; | |
4391 | } else { | |
4392 | stats.byte_count += byte_count; | |
4393 | } | |
4394 | ||
9ed18e46 | 4395 | stats.flow_count++; |
3c4486a5 | 4396 | } |
5e9d0469 BP |
4397 | if (unknown_packets) { |
4398 | stats.packet_count = UINT64_MAX; | |
4399 | } | |
4400 | if (unknown_bytes) { | |
4401 | stats.byte_count = UINT64_MAX; | |
4402 | } | |
27d34fce | 4403 | |
15aaf599 | 4404 | rule_collection_unref(&rules); |
a8e547c1 BP |
4405 | rule_collection_destroy(&rules); |
4406 | ||
982697a4 | 4407 | reply = ofputil_encode_aggregate_stats_reply(&stats, oh); |
76c93b22 | 4408 | ofconn_send_reply(ofconn, reply); |
09246b99 BP |
4409 | |
4410 | return 0; | |
4411 | } | |
4412 | ||
c1c9c9c4 | 4413 | struct queue_stats_cbdata { |
ca0f572c | 4414 | struct ofport *ofport; |
ca6ba700 | 4415 | struct ovs_list replies; |
6dc34a0d | 4416 | long long int now; |
c1c9c9c4 BP |
4417 | }; |
4418 | ||
4419 | static void | |
db9220c3 | 4420 | put_queue_stats(struct queue_stats_cbdata *cbdata, uint32_t queue_id, |
c1c9c9c4 BP |
4421 | const struct netdev_queue_stats *stats) |
4422 | { | |
6dc34a0d | 4423 | struct ofputil_queue_stats oqs; |
c1c9c9c4 | 4424 | |
6dc34a0d BP |
4425 | oqs.port_no = cbdata->ofport->pp.port_no; |
4426 | oqs.queue_id = queue_id; | |
4427 | oqs.tx_bytes = stats->tx_bytes; | |
4428 | oqs.tx_packets = stats->tx_packets; | |
4429 | oqs.tx_errors = stats->tx_errors; | |
4430 | if (stats->created != LLONG_MIN) { | |
4431 | calc_duration(stats->created, cbdata->now, | |
4432 | &oqs.duration_sec, &oqs.duration_nsec); | |
4433 | } else { | |
4434 | oqs.duration_sec = oqs.duration_nsec = UINT32_MAX; | |
4435 | } | |
64626975 | 4436 | ofputil_append_queue_stat(&cbdata->replies, &oqs); |
c1c9c9c4 BP |
4437 | } |
4438 | ||
4439 | static void | |
db9220c3 | 4440 | handle_queue_stats_dump_cb(uint32_t queue_id, |
c1c9c9c4 BP |
4441 | struct netdev_queue_stats *stats, |
4442 | void *cbdata_) | |
4443 | { | |
4444 | struct queue_stats_cbdata *cbdata = cbdata_; | |
4445 | ||
4446 | put_queue_stats(cbdata, queue_id, stats); | |
4447 | } | |
4448 | ||
0414d158 | 4449 | static enum ofperr |
ca0f572c | 4450 | handle_queue_stats_for_port(struct ofport *port, uint32_t queue_id, |
c1c9c9c4 BP |
4451 | struct queue_stats_cbdata *cbdata) |
4452 | { | |
ca0f572c | 4453 | cbdata->ofport = port; |
c1c9c9c4 BP |
4454 | if (queue_id == OFPQ_ALL) { |
4455 | netdev_dump_queue_stats(port->netdev, | |
4456 | handle_queue_stats_dump_cb, cbdata); | |
4457 | } else { | |
4458 | struct netdev_queue_stats stats; | |
4459 | ||
1ac788f6 BP |
4460 | if (!netdev_get_queue_stats(port->netdev, queue_id, &stats)) { |
4461 | put_queue_stats(cbdata, queue_id, &stats); | |
0414d158 BP |
4462 | } else { |
4463 | return OFPERR_OFPQOFC_BAD_QUEUE; | |
1ac788f6 | 4464 | } |
c1c9c9c4 | 4465 | } |
0414d158 | 4466 | return 0; |
c1c9c9c4 BP |
4467 | } |
4468 | ||
90bf1e07 | 4469 | static enum ofperr |
63f2140a | 4470 | handle_queue_stats_request(struct ofconn *ofconn, |
982697a4 | 4471 | const struct ofp_header *rq) |
c1c9c9c4 | 4472 | { |
64ff1d96 | 4473 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
c1c9c9c4 | 4474 | struct queue_stats_cbdata cbdata; |
0414d158 | 4475 | struct ofport *port; |
0414d158 | 4476 | enum ofperr error; |
64626975 | 4477 | struct ofputil_queue_stats_request oqsr; |
c1c9c9c4 | 4478 | |
c1c9c9c4 BP |
4479 | COVERAGE_INC(ofproto_queue_req); |
4480 | ||
982697a4 | 4481 | ofpmp_init(&cbdata.replies, rq); |
6dc34a0d | 4482 | cbdata.now = time_msec(); |
c1c9c9c4 | 4483 | |
64626975 SH |
4484 | error = ofputil_decode_queue_stats_request(rq, &oqsr); |
4485 | if (error) { | |
4486 | return error; | |
4487 | } | |
4488 | ||
7f05e7ab | 4489 | if (oqsr.port_no == OFPP_ANY) { |
0414d158 | 4490 | error = OFPERR_OFPQOFC_BAD_QUEUE; |
4e8e4213 | 4491 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
64626975 | 4492 | if (!handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata)) { |
0414d158 BP |
4493 | error = 0; |
4494 | } | |
c1c9c9c4 | 4495 | } |
0414d158 | 4496 | } else { |
64626975 | 4497 | port = ofproto_get_port(ofproto, oqsr.port_no); |
0414d158 | 4498 | error = (port |
64626975 | 4499 | ? handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata) |
0414d158 BP |
4500 | : OFPERR_OFPQOFC_BAD_PORT); |
4501 | } | |
4502 | if (!error) { | |
4503 | ofconn_send_replies(ofconn, &cbdata.replies); | |
c1c9c9c4 | 4504 | } else { |
63f2140a | 4505 | ofpbuf_list_delete(&cbdata.replies); |
c1c9c9c4 | 4506 | } |
c1c9c9c4 | 4507 | |
0414d158 | 4508 | return error; |
c1c9c9c4 | 4509 | } |
7ee20df1 | 4510 | |
2e31a9b8 | 4511 | static enum ofperr |
6787a49f | 4512 | evict_rules_from_table(struct oftable *table) |
15aaf599 | 4513 | OVS_REQUIRES(ofproto_mutex) |
2e31a9b8 | 4514 | { |
802f84ff JR |
4515 | enum ofperr error = 0; |
4516 | struct rule_collection rules; | |
6787a49f | 4517 | unsigned int count = table->n_flows; |
802f84ff JR |
4518 | unsigned int max_flows = table->max_flows; |
4519 | ||
4520 | rule_collection_init(&rules); | |
4521 | ||
4522 | while (count-- > max_flows) { | |
2e31a9b8 | 4523 | struct rule *rule; |
8037acb4 | 4524 | |
2e31a9b8 | 4525 | if (!choose_rule_to_evict(table, &rule)) { |
802f84ff JR |
4526 | error = OFPERR_OFPFMFC_TABLE_FULL; |
4527 | break; | |
2e31a9b8 | 4528 | } else { |
802f84ff JR |
4529 | eviction_group_remove_rule(rule); |
4530 | rule_collection_add(&rules, rule); | |
2e31a9b8 | 4531 | } |
8037acb4 | 4532 | } |
802f84ff | 4533 | delete_flows__(&rules, OFPRR_EVICTION, NULL); |
2e31a9b8 | 4534 | |
802f84ff | 4535 | return error; |
8037acb4 BP |
4536 | } |
4537 | ||
18080541 BP |
4538 | static void |
4539 | get_conjunctions(const struct ofputil_flow_mod *fm, | |
4540 | struct cls_conjunction **conjsp, size_t *n_conjsp) | |
4541 | OVS_REQUIRES(ofproto_mutex) | |
4542 | { | |
4543 | struct cls_conjunction *conjs = NULL; | |
4544 | int n_conjs = 0; | |
4545 | ||
f08e39dd BP |
4546 | const struct ofpact *ofpact; |
4547 | OFPACT_FOR_EACH (ofpact, fm->ofpacts, fm->ofpacts_len) { | |
4548 | if (ofpact->type == OFPACT_CONJUNCTION) { | |
18080541 | 4549 | n_conjs++; |
f08e39dd BP |
4550 | } else if (ofpact->type != OFPACT_NOTE) { |
4551 | /* "conjunction" may appear with "note" actions but not with any | |
4552 | * other type of actions. */ | |
4553 | ovs_assert(!n_conjs); | |
4554 | break; | |
18080541 | 4555 | } |
f08e39dd BP |
4556 | } |
4557 | if (n_conjs) { | |
4558 | int i = 0; | |
18080541 BP |
4559 | |
4560 | conjs = xzalloc(n_conjs * sizeof *conjs); | |
18080541 | 4561 | OFPACT_FOR_EACH (ofpact, fm->ofpacts, fm->ofpacts_len) { |
f08e39dd BP |
4562 | if (ofpact->type == OFPACT_CONJUNCTION) { |
4563 | struct ofpact_conjunction *oc = ofpact_get_CONJUNCTION(ofpact); | |
4564 | conjs[i].clause = oc->clause; | |
4565 | conjs[i].n_clauses = oc->n_clauses; | |
4566 | conjs[i].id = oc->id; | |
4567 | i++; | |
4568 | } | |
18080541 BP |
4569 | } |
4570 | } | |
4571 | ||
4572 | *conjsp = conjs; | |
4573 | *n_conjsp = n_conjs; | |
4574 | } | |
4575 | ||
1f42be1c JR |
4576 | /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT |
4577 | * in which no matching flow already exists in the flow table. | |
4578 | * | |
4579 | * Adds the flow specified by 'fm', to the ofproto's flow table. Returns 0 on | |
4580 | * success, or an OpenFlow error code on failure. | |
4581 | * | |
4582 | * On successful return the caller must complete the operation either by | |
4583 | * calling add_flow_finish(), or add_flow_revert() if the operation needs to | |
4584 | * be reverted. | |
4585 | * | |
4586 | * The caller retains ownership of 'fm->ofpacts'. */ | |
90bf1e07 | 4587 | static enum ofperr |
8be00367 | 4588 | add_flow_start(struct ofproto *ofproto, struct ofproto_flow_mod *ofm) |
15aaf599 | 4589 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 4590 | { |
8be00367 JR |
4591 | struct ofputil_flow_mod *fm = &ofm->fm; |
4592 | struct rule **old_rule = &ofm->old_rules.stub[0]; | |
4593 | struct rule **new_rule = &ofm->new_rules.stub[0]; | |
d0918789 | 4594 | struct oftable *table; |
8037acb4 | 4595 | struct cls_rule cr; |
064af421 | 4596 | struct rule *rule; |
5a361239 | 4597 | uint8_t table_id; |
39c94593 JR |
4598 | struct cls_conjunction *conjs; |
4599 | size_t n_conjs; | |
4600 | enum ofperr error; | |
064af421 | 4601 | |
554764d1 SH |
4602 | if (!check_table_id(ofproto, fm->table_id)) { |
4603 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
48266274 BP |
4604 | return error; |
4605 | } | |
4606 | ||
7ee20df1 BP |
4607 | /* Pick table. */ |
4608 | if (fm->table_id == 0xff) { | |
13521ff5 | 4609 | if (ofproto->ofproto_class->rule_choose_table) { |
81a76618 BP |
4610 | error = ofproto->ofproto_class->rule_choose_table(ofproto, |
4611 | &fm->match, | |
7ee20df1 BP |
4612 | &table_id); |
4613 | if (error) { | |
4614 | return error; | |
4615 | } | |
cb22974d | 4616 | ovs_assert(table_id < ofproto->n_tables); |
7ee20df1 | 4617 | } else { |
5a361239 | 4618 | table_id = 0; |
7ee20df1 BP |
4619 | } |
4620 | } else if (fm->table_id < ofproto->n_tables) { | |
5a361239 | 4621 | table_id = fm->table_id; |
7ee20df1 | 4622 | } else { |
c22c56bd | 4623 | return OFPERR_OFPBRC_BAD_TABLE_ID; |
064af421 BP |
4624 | } |
4625 | ||
5a361239 | 4626 | table = &ofproto->tables[table_id]; |
834fe5cb BP |
4627 | if (table->flags & OFTABLE_READONLY |
4628 | && !(fm->flags & OFPUTIL_FF_NO_READONLY)) { | |
5c67e4af BP |
4629 | return OFPERR_OFPBRC_EPERM; |
4630 | } | |
4631 | ||
c84d8691 JR |
4632 | if (!(fm->flags & OFPUTIL_FF_HIDDEN_FIELDS) |
4633 | && !match_has_default_hidden_fields(&fm->match)) { | |
4634 | VLOG_WARN_RL(&rl, "%s: (add_flow) only internal flows can set " | |
4635 | "non-default values to hidden fields", ofproto->name); | |
4636 | return OFPERR_OFPBRC_EPERM; | |
adcf00ba AZ |
4637 | } |
4638 | ||
bd53aa17 | 4639 | cls_rule_init(&cr, &fm->match, fm->priority); |
8037acb4 | 4640 | |
1f42be1c | 4641 | /* Check for the existence of an identical rule. |
2b7b1427 | 4642 | * This will not return rules earlier marked for removal. */ |
bd53aa17 JR |
4643 | rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls, &cr, |
4644 | ofm->version)); | |
39c94593 JR |
4645 | *old_rule = rule; |
4646 | if (!rule) { | |
c84d8691 JR |
4647 | /* Check for overlap, if requested. */ |
4648 | if (fm->flags & OFPUTIL_FF_CHECK_OVERLAP | |
bd53aa17 | 4649 | && classifier_rule_overlaps(&table->cls, &cr, ofm->version)) { |
c84d8691 JR |
4650 | cls_rule_destroy(&cr); |
4651 | return OFPERR_OFPFMFC_OVERLAP; | |
dd27be82 | 4652 | } |
b277c7cc | 4653 | |
c84d8691 | 4654 | /* If necessary, evict an existing rule to clear out space. */ |
6787a49f JR |
4655 | if (table->n_flows >= table->max_flows) { |
4656 | if (!choose_rule_to_evict(table, &rule)) { | |
4657 | error = OFPERR_OFPFMFC_TABLE_FULL; | |
4658 | cls_rule_destroy(&cr); | |
4659 | return error; | |
4660 | } | |
4661 | eviction_group_remove_rule(rule); | |
4662 | /* Marks '*old_rule' as an evicted rule rather than replaced rule. | |
4663 | */ | |
4664 | fm->delete_reason = OFPRR_EVICTION; | |
4665 | *old_rule = rule; | |
c09f755d | 4666 | } |
39c94593 JR |
4667 | } else { |
4668 | fm->modify_cookie = true; | |
4669 | } | |
81a76618 | 4670 | |
39c94593 JR |
4671 | /* Allocate new rule. */ |
4672 | error = replace_rule_create(ofproto, fm, &cr, table - ofproto->tables, | |
4673 | rule, new_rule); | |
4674 | if (error) { | |
4675 | return error; | |
064af421 | 4676 | } |
8037acb4 | 4677 | |
39c94593 | 4678 | get_conjunctions(fm, &conjs, &n_conjs); |
8be00367 | 4679 | replace_rule_start(ofproto, ofm->version, rule, *new_rule, conjs, n_conjs); |
39c94593 JR |
4680 | free(conjs); |
4681 | ||
c84d8691 JR |
4682 | return 0; |
4683 | } | |
1ebeaaa7 | 4684 | |
6787a49f | 4685 | /* Revert the effects of add_flow_start(). */ |
1f42be1c | 4686 | static void |
8be00367 | 4687 | add_flow_revert(struct ofproto *ofproto, struct ofproto_flow_mod *ofm) |
1f42be1c JR |
4688 | OVS_REQUIRES(ofproto_mutex) |
4689 | { | |
8be00367 JR |
4690 | struct ofputil_flow_mod *fm = &ofm->fm; |
4691 | struct rule *old_rule = ofm->old_rules.stub[0]; | |
4692 | struct rule *new_rule = ofm->new_rules.stub[0]; | |
4693 | ||
6787a49f JR |
4694 | if (old_rule && fm->delete_reason == OFPRR_EVICTION) { |
4695 | /* Revert the eviction. */ | |
4696 | eviction_group_add_rule(old_rule); | |
4697 | } | |
4698 | ||
39c94593 | 4699 | replace_rule_revert(ofproto, old_rule, new_rule); |
1f42be1c JR |
4700 | } |
4701 | ||
39c94593 | 4702 | /* To be called after version bump. */ |
c84d8691 | 4703 | static void |
8be00367 JR |
4704 | add_flow_finish(struct ofproto *ofproto, struct ofproto_flow_mod *ofm, |
4705 | const struct flow_mod_requester *req) | |
c84d8691 JR |
4706 | OVS_REQUIRES(ofproto_mutex) |
4707 | { | |
8be00367 JR |
4708 | struct ofputil_flow_mod *fm = &ofm->fm; |
4709 | struct rule *old_rule = ofm->old_rules.stub[0]; | |
4710 | struct rule *new_rule = ofm->new_rules.stub[0]; | |
39c94593 | 4711 | struct ovs_list dead_cookies = OVS_LIST_INITIALIZER(&dead_cookies); |
8037acb4 | 4712 | |
39c94593 JR |
4713 | replace_rule_finish(ofproto, fm, req, old_rule, new_rule, &dead_cookies); |
4714 | learned_cookies_flush(ofproto, &dead_cookies); | |
802f84ff | 4715 | |
39c94593 JR |
4716 | if (old_rule) { |
4717 | ovsrcu_postpone(remove_rule_rcu, old_rule); | |
4718 | } else { | |
8fd47924 | 4719 | if (minimask_get_vid_mask(new_rule->cr.match.mask) == VLAN_VID_MASK) { |
c84d8691 | 4720 | if (ofproto->vlan_bitmap) { |
8fd47924 | 4721 | uint16_t vid = miniflow_get_vid(new_rule->cr.match.flow); |
062fea06 | 4722 | |
c84d8691 JR |
4723 | if (!bitmap_is_set(ofproto->vlan_bitmap, vid)) { |
4724 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
4725 | ofproto->vlans_changed = true; | |
4726 | } | |
4727 | } else { | |
834fe5cb BP |
4728 | ofproto->vlans_changed = true; |
4729 | } | |
834fe5cb | 4730 | } |
c84d8691 | 4731 | |
39c94593 | 4732 | ofmonitor_report(ofproto->connmgr, new_rule, NXFME_ADDED, 0, |
c84d8691 JR |
4733 | req ? req->ofconn : NULL, |
4734 | req ? req->request->xid : 0, NULL); | |
6c6eedc5 SJ |
4735 | |
4736 | /* Send Vacancy Events for OF1.4+. */ | |
4737 | send_table_status(ofproto, new_rule->table_id); | |
c84d8691 JR |
4738 | } |
4739 | ||
39c94593 | 4740 | send_buffered_packet(req, fm->buffer_id, new_rule); |
c84d8691 | 4741 | } |
79eee1eb BP |
4742 | \f |
4743 | /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */ | |
064af421 | 4744 | |
39c94593 JR |
4745 | /* Create a new rule based on attributes in 'fm', match in 'cr', 'table_id', |
4746 | * and 'old_rule'. Note that the rule is NOT inserted into a any data | |
4747 | * structures yet. Takes ownership of 'cr'. */ | |
90bf1e07 | 4748 | static enum ofperr |
39c94593 JR |
4749 | replace_rule_create(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4750 | struct cls_rule *cr, uint8_t table_id, | |
4751 | struct rule *old_rule, struct rule **new_rule) | |
79eee1eb | 4752 | { |
39c94593 | 4753 | struct rule *rule; |
dd27be82 | 4754 | enum ofperr error; |
79eee1eb | 4755 | |
39c94593 JR |
4756 | /* Allocate new rule. */ |
4757 | rule = ofproto->ofproto_class->rule_alloc(); | |
4758 | if (!rule) { | |
4759 | cls_rule_destroy(cr); | |
4760 | VLOG_WARN_RL(&rl, "%s: failed to allocate a rule.", ofproto->name); | |
4761 | return OFPERR_OFPFMFC_UNKNOWN; | |
af822017 BP |
4762 | } |
4763 | ||
39c94593 JR |
4764 | /* Initialize base state. */ |
4765 | *CONST_CAST(struct ofproto **, &rule->ofproto) = ofproto; | |
4766 | cls_rule_move(CONST_CAST(struct cls_rule *, &rule->cr), cr); | |
4767 | ovs_refcount_init(&rule->ref_count); | |
4768 | rule->flow_cookie = fm->new_cookie; | |
4769 | rule->created = rule->modified = time_msec(); | |
834fe5cb | 4770 | |
39c94593 JR |
4771 | ovs_mutex_init(&rule->mutex); |
4772 | ovs_mutex_lock(&rule->mutex); | |
4773 | rule->idle_timeout = fm->idle_timeout; | |
4774 | rule->hard_timeout = fm->hard_timeout; | |
cf119e09 | 4775 | *CONST_CAST(uint16_t *, &rule->importance) = fm->importance; |
f695ebfa | 4776 | rule->removed_reason = OVS_OFPRR_NONE; |
834fe5cb | 4777 | |
39c94593 JR |
4778 | *CONST_CAST(uint8_t *, &rule->table_id) = table_id; |
4779 | rule->flags = fm->flags & OFPUTIL_FF_STATE; | |
4780 | *CONST_CAST(const struct rule_actions **, &rule->actions) | |
4781 | = rule_actions_create(fm->ofpacts, fm->ofpacts_len); | |
417e7e66 | 4782 | ovs_list_init(&rule->meter_list_node); |
39c94593 | 4783 | rule->eviction_group = NULL; |
417e7e66 | 4784 | ovs_list_init(&rule->expirable); |
39c94593 JR |
4785 | rule->monitor_flags = 0; |
4786 | rule->add_seqno = 0; | |
4787 | rule->modify_seqno = 0; | |
834fe5cb | 4788 | |
39c94593 | 4789 | /* Copy values from old rule for modify semantics. */ |
6787a49f | 4790 | if (old_rule && fm->delete_reason != OFPRR_EVICTION) { |
39c94593 JR |
4791 | bool change_cookie = (fm->modify_cookie |
4792 | && fm->new_cookie != OVS_BE64_MAX | |
4793 | && fm->new_cookie != old_rule->flow_cookie); | |
4794 | ||
4795 | ovs_mutex_lock(&old_rule->mutex); | |
4796 | if (fm->command != OFPFC_ADD) { | |
4797 | rule->idle_timeout = old_rule->idle_timeout; | |
4798 | rule->hard_timeout = old_rule->hard_timeout; | |
cf119e09 | 4799 | *CONST_CAST(uint16_t *, &rule->importance) = old_rule->importance; |
39c94593 JR |
4800 | rule->flags = old_rule->flags; |
4801 | rule->created = old_rule->created; | |
4802 | } | |
4803 | if (!change_cookie) { | |
4804 | rule->flow_cookie = old_rule->flow_cookie; | |
4805 | } | |
4806 | ovs_mutex_unlock(&old_rule->mutex); | |
dd27be82 | 4807 | } |
dd27be82 JR |
4808 | ovs_mutex_unlock(&rule->mutex); |
4809 | ||
39c94593 JR |
4810 | /* Construct rule, initializing derived state. */ |
4811 | error = ofproto->ofproto_class->rule_construct(rule); | |
4812 | if (error) { | |
4813 | ofproto_rule_destroy__(rule); | |
4814 | return error; | |
dd27be82 | 4815 | } |
b277c7cc | 4816 | |
39c94593 | 4817 | rule->removed = true; /* Not yet in ofproto data structures. */ |
dd27be82 | 4818 | |
39c94593 JR |
4819 | *new_rule = rule; |
4820 | return 0; | |
4821 | } | |
884e1dc4 | 4822 | |
39c94593 | 4823 | static void |
8be00367 | 4824 | replace_rule_start(struct ofproto *ofproto, cls_version_t version, |
39c94593 JR |
4825 | struct rule *old_rule, struct rule *new_rule, |
4826 | struct cls_conjunction *conjs, size_t n_conjs) | |
4827 | { | |
4828 | struct oftable *table = &ofproto->tables[new_rule->table_id]; | |
834fe5cb | 4829 | |
6787a49f | 4830 | /* 'old_rule' may be either an evicted rule or replaced rule. */ |
39c94593 JR |
4831 | if (old_rule) { |
4832 | /* Mark the old rule for removal in the next version. */ | |
8be00367 | 4833 | cls_rule_make_invisible_in_version(&old_rule->cr, version); |
d79e3d70 JR |
4834 | } else { |
4835 | table->n_flows++; | |
dd27be82 | 4836 | } |
39c94593 JR |
4837 | /* Insert flow to the classifier, so that later flow_mods may relate |
4838 | * to it. This is reversible, in case later errors require this to | |
4839 | * be reverted. */ | |
4840 | ofproto_rule_insert__(ofproto, new_rule); | |
4841 | /* Make the new rule visible for classifier lookups only from the next | |
4842 | * version. */ | |
bd53aa17 | 4843 | classifier_insert(&table->cls, &new_rule->cr, version, conjs, n_conjs); |
39c94593 JR |
4844 | } |
4845 | ||
4846 | static void replace_rule_revert(struct ofproto *ofproto, | |
4847 | struct rule *old_rule, struct rule *new_rule) | |
4848 | { | |
4849 | struct oftable *table = &ofproto->tables[new_rule->table_id]; | |
35f48b8b | 4850 | |
39c94593 | 4851 | if (old_rule) { |
d79e3d70 | 4852 | /* Restore the original visibility of the old rule. */ |
39c94593 | 4853 | cls_rule_restore_visibility(&old_rule->cr); |
d79e3d70 JR |
4854 | } else { |
4855 | /* Restore table's rule count. */ | |
4856 | table->n_flows--; | |
834fe5cb BP |
4857 | } |
4858 | ||
39c94593 JR |
4859 | /* Remove the new rule immediately. It was never visible to lookups. */ |
4860 | if (!classifier_remove(&table->cls, &new_rule->cr)) { | |
4861 | OVS_NOT_REACHED(); | |
5ecc9d81 | 4862 | } |
39c94593 JR |
4863 | ofproto_rule_remove__(ofproto, new_rule); |
4864 | /* The rule was not inserted to the ofproto provider, so we can | |
4865 | * release it without deleting it from the ofproto provider. */ | |
4866 | ofproto_rule_unref(new_rule); | |
dd27be82 | 4867 | } |
79eee1eb | 4868 | |
39c94593 | 4869 | /* Adds the 'new_rule', replacing the 'old_rule'. */ |
dd27be82 | 4870 | static void |
39c94593 JR |
4871 | replace_rule_finish(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4872 | const struct flow_mod_requester *req, | |
4873 | struct rule *old_rule, struct rule *new_rule, | |
4874 | struct ovs_list *dead_cookies) | |
dd27be82 JR |
4875 | OVS_REQUIRES(ofproto_mutex) |
4876 | { | |
39c94593 | 4877 | bool forward_stats = !(fm->flags & OFPUTIL_FF_RESET_COUNTS); |
6787a49f JR |
4878 | struct rule *replaced_rule; |
4879 | ||
4880 | replaced_rule = fm->delete_reason != OFPRR_EVICTION ? old_rule : NULL; | |
dd27be82 | 4881 | |
6787a49f JR |
4882 | /* Insert the new flow to the ofproto provider. A non-NULL 'replaced_rule' |
4883 | * is a duplicate rule the 'new_rule' is replacing. The provider should | |
4884 | * link the stats from the old rule to the new one if 'forward_stats' is | |
4885 | * 'true'. The 'replaced_rule' will be deleted right after this call. */ | |
4886 | ofproto->ofproto_class->rule_insert(new_rule, replaced_rule, | |
4887 | forward_stats); | |
39c94593 JR |
4888 | learned_cookies_inc(ofproto, rule_get_actions(new_rule)); |
4889 | ||
4890 | if (old_rule) { | |
4891 | const struct rule_actions *old_actions = rule_get_actions(old_rule); | |
4892 | ||
39c94593 JR |
4893 | /* Remove the old rule from data structures. Removal from the |
4894 | * classifier and the deletion of the rule is RCU postponed by the | |
4895 | * caller. */ | |
4896 | ofproto_rule_remove__(ofproto, old_rule); | |
4897 | learned_cookies_dec(ofproto, old_actions, dead_cookies); | |
4898 | ||
6787a49f JR |
4899 | if (replaced_rule) { |
4900 | enum nx_flow_update_event event = fm->command == OFPFC_ADD | |
4901 | ? NXFME_ADDED : NXFME_MODIFIED; | |
4902 | ||
4903 | bool change_cookie = (fm->modify_cookie | |
4904 | && fm->new_cookie != OVS_BE64_MAX | |
4905 | && fm->new_cookie != old_rule->flow_cookie); | |
4906 | ||
4907 | bool change_actions = !ofpacts_equal(fm->ofpacts, | |
4908 | fm->ofpacts_len, | |
4909 | old_actions->ofpacts, | |
4910 | old_actions->ofpacts_len); | |
4911 | ||
4912 | if (event != NXFME_MODIFIED || change_actions || change_cookie) { | |
4913 | ofmonitor_report(ofproto->connmgr, new_rule, event, 0, | |
4914 | req ? req->ofconn : NULL, | |
4915 | req ? req->request->xid : 0, | |
4916 | change_actions ? old_actions : NULL); | |
4917 | } | |
4918 | } else { | |
4919 | /* XXX: This is slight duplication with delete_flows_finish__() */ | |
4920 | ||
f695ebfa | 4921 | old_rule->removed_reason = OFPRR_EVICTION; |
6787a49f JR |
4922 | |
4923 | ofmonitor_report(ofproto->connmgr, old_rule, NXFME_DELETED, | |
4924 | OFPRR_EVICTION, | |
39c94593 | 4925 | req ? req->ofconn : NULL, |
6787a49f | 4926 | req ? req->request->xid : 0, NULL); |
39c94593 | 4927 | } |
dd27be82 | 4928 | } |
9ed18e46 BP |
4929 | } |
4930 | ||
9387b970 | 4931 | static enum ofperr |
8be00367 | 4932 | modify_flows_start__(struct ofproto *ofproto, struct ofproto_flow_mod *ofm) |
dd27be82 JR |
4933 | OVS_REQUIRES(ofproto_mutex) |
4934 | { | |
8be00367 JR |
4935 | struct ofputil_flow_mod *fm = &ofm->fm; |
4936 | struct rule_collection *old_rules = &ofm->old_rules; | |
4937 | struct rule_collection *new_rules = &ofm->new_rules; | |
dd27be82 JR |
4938 | enum ofperr error; |
4939 | ||
39c94593 JR |
4940 | rule_collection_init(new_rules); |
4941 | ||
4942 | if (old_rules->n > 0) { | |
4943 | struct cls_conjunction *conjs; | |
4944 | size_t n_conjs; | |
4945 | size_t i; | |
4946 | ||
4947 | /* Create a new 'modified' rule for each old rule. */ | |
4948 | for (i = 0; i < old_rules->n; i++) { | |
4949 | struct rule *old_rule = old_rules->rules[i]; | |
4950 | struct rule *new_rule; | |
4951 | struct cls_rule cr; | |
4952 | ||
bd53aa17 | 4953 | cls_rule_clone(&cr, &old_rule->cr); |
39c94593 JR |
4954 | error = replace_rule_create(ofproto, fm, &cr, old_rule->table_id, |
4955 | old_rule, &new_rule); | |
4956 | if (!error) { | |
4957 | rule_collection_add(new_rules, new_rule); | |
4958 | } else { | |
4959 | rule_collection_unref(new_rules); | |
4960 | rule_collection_destroy(new_rules); | |
4961 | return error; | |
4962 | } | |
4963 | } | |
4964 | ovs_assert(new_rules->n == old_rules->n); | |
4965 | ||
4966 | get_conjunctions(fm, &conjs, &n_conjs); | |
4967 | for (i = 0; i < old_rules->n; i++) { | |
8be00367 | 4968 | replace_rule_start(ofproto, ofm->version, old_rules->rules[i], |
39c94593 JR |
4969 | new_rules->rules[i], conjs, n_conjs); |
4970 | } | |
4971 | free(conjs); | |
d99f64d7 JR |
4972 | } else if (!(fm->cookie_mask != htonll(0) |
4973 | || fm->new_cookie == OVS_BE64_MAX)) { | |
39c94593 | 4974 | /* No match, add a new flow. */ |
8be00367 | 4975 | error = add_flow_start(ofproto, ofm); |
dd27be82 | 4976 | if (!error) { |
6787a49f JR |
4977 | ovs_assert(fm->delete_reason == OFPRR_EVICTION |
4978 | || !old_rules->rules[0]); | |
dd27be82 | 4979 | } |
39c94593 | 4980 | new_rules->n = 1; |
dd27be82 | 4981 | } else { |
d99f64d7 | 4982 | error = 0; |
dd27be82 | 4983 | } |
39c94593 | 4984 | |
dd27be82 JR |
4985 | return error; |
4986 | } | |
4987 | ||
90bf1e07 BP |
4988 | /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on |
4989 | * failure. | |
9ed18e46 BP |
4990 | * |
4991 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, | |
4992 | * if any. */ | |
90bf1e07 | 4993 | static enum ofperr |
8be00367 | 4994 | modify_flows_start_loose(struct ofproto *ofproto, struct ofproto_flow_mod *ofm) |
15aaf599 | 4995 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 4996 | { |
8be00367 JR |
4997 | struct ofputil_flow_mod *fm = &ofm->fm; |
4998 | struct rule_collection *old_rules = &ofm->old_rules; | |
a9b22b7f | 4999 | struct rule_criteria criteria; |
d51c8b71 | 5000 | enum ofperr error; |
9ed18e46 | 5001 | |
2b7b1427 | 5002 | rule_criteria_init(&criteria, fm->table_id, &fm->match, 0, CLS_MAX_VERSION, |
30ef36c6 | 5003 | fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG_ANY); |
dd51dae2 BP |
5004 | rule_criteria_require_rw(&criteria, |
5005 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
39c94593 | 5006 | error = collect_rules_loose(ofproto, &criteria, old_rules); |
a9b22b7f BP |
5007 | rule_criteria_destroy(&criteria); |
5008 | ||
a8e547c1 | 5009 | if (!error) { |
8be00367 | 5010 | error = modify_flows_start__(ofproto, ofm); |
d99f64d7 JR |
5011 | } |
5012 | ||
5013 | if (error) { | |
39c94593 | 5014 | rule_collection_destroy(old_rules); |
d99f64d7 JR |
5015 | } |
5016 | return error; | |
5017 | } | |
5018 | ||
1f42be1c | 5019 | static void |
8be00367 | 5020 | modify_flows_revert(struct ofproto *ofproto, struct ofproto_flow_mod *ofm) |
1f42be1c JR |
5021 | OVS_REQUIRES(ofproto_mutex) |
5022 | { | |
8be00367 JR |
5023 | struct rule_collection *old_rules = &ofm->old_rules; |
5024 | struct rule_collection *new_rules = &ofm->new_rules; | |
5025 | ||
39c94593 JR |
5026 | /* Old rules were not changed yet, only need to revert new rules. */ |
5027 | if (old_rules->n == 0 && new_rules->n == 1) { | |
8be00367 | 5028 | add_flow_revert(ofproto, ofm); |
39c94593 JR |
5029 | } else if (old_rules->n > 0) { |
5030 | for (size_t i = 0; i < old_rules->n; i++) { | |
5031 | replace_rule_revert(ofproto, old_rules->rules[i], | |
5032 | new_rules->rules[i]); | |
5033 | } | |
5034 | rule_collection_destroy(new_rules); | |
5035 | rule_collection_destroy(old_rules); | |
1f42be1c | 5036 | } |
1f42be1c JR |
5037 | } |
5038 | ||
d99f64d7 | 5039 | static void |
8be00367 JR |
5040 | modify_flows_finish(struct ofproto *ofproto, struct ofproto_flow_mod *ofm, |
5041 | const struct flow_mod_requester *req) | |
d99f64d7 JR |
5042 | OVS_REQUIRES(ofproto_mutex) |
5043 | { | |
8be00367 JR |
5044 | struct ofputil_flow_mod *fm = &ofm->fm; |
5045 | struct rule_collection *old_rules = &ofm->old_rules; | |
5046 | struct rule_collection *new_rules = &ofm->new_rules; | |
5047 | ||
39c94593 | 5048 | if (old_rules->n == 0 && new_rules->n == 1) { |
8be00367 | 5049 | add_flow_finish(ofproto, ofm, req); |
39c94593 JR |
5050 | } else if (old_rules->n > 0) { |
5051 | struct ovs_list dead_cookies = OVS_LIST_INITIALIZER(&dead_cookies); | |
5052 | ||
5053 | ovs_assert(new_rules->n == old_rules->n); | |
5054 | ||
5055 | for (size_t i = 0; i < old_rules->n; i++) { | |
5056 | replace_rule_finish(ofproto, fm, req, old_rules->rules[i], | |
5057 | new_rules->rules[i], &dead_cookies); | |
5058 | } | |
5059 | learned_cookies_flush(ofproto, &dead_cookies); | |
5060 | rule_collection_remove_postponed(old_rules); | |
5061 | ||
5062 | send_buffered_packet(req, fm->buffer_id, new_rules->rules[0]); | |
5063 | rule_collection_destroy(new_rules); | |
d99f64d7 | 5064 | } |
d99f64d7 JR |
5065 | } |
5066 | ||
79eee1eb | 5067 | /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error |
baae3d02 | 5068 | * code on failure. */ |
90bf1e07 | 5069 | static enum ofperr |
8be00367 | 5070 | modify_flow_start_strict(struct ofproto *ofproto, struct ofproto_flow_mod *ofm) |
15aaf599 | 5071 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 5072 | { |
8be00367 JR |
5073 | struct ofputil_flow_mod *fm = &ofm->fm; |
5074 | struct rule_collection *old_rules = &ofm->old_rules; | |
a9b22b7f | 5075 | struct rule_criteria criteria; |
d51c8b71 | 5076 | enum ofperr error; |
6c1491fb | 5077 | |
a9b22b7f | 5078 | rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority, |
2b7b1427 | 5079 | CLS_MAX_VERSION, fm->cookie, fm->cookie_mask, OFPP_ANY, |
30ef36c6 | 5080 | OFPG_ANY); |
dd51dae2 BP |
5081 | rule_criteria_require_rw(&criteria, |
5082 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
39c94593 | 5083 | error = collect_rules_strict(ofproto, &criteria, old_rules); |
a9b22b7f BP |
5084 | rule_criteria_destroy(&criteria); |
5085 | ||
a8e547c1 | 5086 | if (!error) { |
dd27be82 | 5087 | /* collect_rules_strict() can return max 1 rule. */ |
8be00367 | 5088 | error = modify_flows_start__(ofproto, ofm); |
d99f64d7 JR |
5089 | } |
5090 | ||
5091 | if (error) { | |
39c94593 | 5092 | rule_collection_destroy(old_rules); |
d99f64d7 JR |
5093 | } |
5094 | return error; | |
5095 | } | |
9ed18e46 BP |
5096 | \f |
5097 | /* OFPFC_DELETE implementation. */ | |
79eee1eb | 5098 | |
254750ce | 5099 | static void |
8be00367 | 5100 | delete_flows_start__(struct ofproto *ofproto, cls_version_t version, |
39c94593 JR |
5101 | const struct rule_collection *rules) |
5102 | OVS_REQUIRES(ofproto_mutex) | |
5103 | { | |
5104 | for (size_t i = 0; i < rules->n; i++) { | |
d79e3d70 JR |
5105 | struct rule *rule = rules->rules[i]; |
5106 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
5107 | ||
5108 | table->n_flows--; | |
8be00367 | 5109 | cls_rule_make_invisible_in_version(&rule->cr, version); |
39c94593 JR |
5110 | } |
5111 | } | |
5112 | ||
5113 | static void | |
5114 | delete_flows_finish__(struct ofproto *ofproto, | |
5115 | struct rule_collection *rules, | |
5116 | enum ofp_flow_removed_reason reason, | |
5117 | const struct flow_mod_requester *req) | |
15aaf599 | 5118 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 5119 | { |
9ca4a86f | 5120 | if (rules->n) { |
55951e15 | 5121 | struct ovs_list dead_cookies = OVS_LIST_INITIALIZER(&dead_cookies); |
79eee1eb | 5122 | |
39c94593 JR |
5123 | for (size_t i = 0; i < rules->n; i++) { |
5124 | struct rule *rule = rules->rules[i]; | |
79eee1eb | 5125 | |
f695ebfa JR |
5126 | /* This value will be used to send the flow removed message right |
5127 | * before the rule is actually destroyed. */ | |
5128 | rule->removed_reason = reason; | |
5129 | ||
9ca4a86f | 5130 | ofmonitor_report(ofproto->connmgr, rule, NXFME_DELETED, reason, |
c84d8691 JR |
5131 | req ? req->ofconn : NULL, |
5132 | req ? req->request->xid : 0, NULL); | |
6c6eedc5 SJ |
5133 | |
5134 | /* Send Vacancy Event for OF1.4+. */ | |
5135 | send_table_status(ofproto, rule->table_id); | |
5136 | ||
802f84ff | 5137 | ofproto_rule_remove__(ofproto, rule); |
802f84ff JR |
5138 | learned_cookies_dec(ofproto, rule_get_actions(rule), |
5139 | &dead_cookies); | |
9ca4a86f | 5140 | } |
39c94593 JR |
5141 | rule_collection_remove_postponed(rules); |
5142 | ||
35f48b8b | 5143 | learned_cookies_flush(ofproto, &dead_cookies); |
39c94593 JR |
5144 | } |
5145 | } | |
5146 | ||
5147 | /* Deletes the rules listed in 'rules'. | |
5148 | * The deleted rules will become invisible to the lookups in the next version. | |
5149 | * Destroys 'rules'. */ | |
5150 | static void | |
5151 | delete_flows__(struct rule_collection *rules, | |
5152 | enum ofp_flow_removed_reason reason, | |
5153 | const struct flow_mod_requester *req) | |
5154 | OVS_REQUIRES(ofproto_mutex) | |
5155 | { | |
5156 | if (rules->n) { | |
5157 | struct ofproto *ofproto = rules->rules[0]->ofproto; | |
5158 | ||
8be00367 | 5159 | delete_flows_start__(ofproto, ofproto->tables_version + 1, rules); |
39c94593 JR |
5160 | ofproto_bump_tables_version(ofproto); |
5161 | delete_flows_finish__(ofproto, rules, reason, req); | |
9ca4a86f BP |
5162 | ofmonitor_flush(ofproto->connmgr); |
5163 | } | |
79eee1eb | 5164 | } |
79eee1eb BP |
5165 | |
5166 | /* Implements OFPFC_DELETE. */ | |
90bf1e07 | 5167 | static enum ofperr |
8be00367 | 5168 | delete_flows_start_loose(struct ofproto *ofproto, struct ofproto_flow_mod *ofm) |
15aaf599 | 5169 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 5170 | { |
8be00367 JR |
5171 | const struct ofputil_flow_mod *fm = &ofm->fm; |
5172 | struct rule_collection *rules = &ofm->old_rules; | |
a9b22b7f | 5173 | struct rule_criteria criteria; |
90bf1e07 | 5174 | enum ofperr error; |
064af421 | 5175 | |
2b7b1427 | 5176 | rule_criteria_init(&criteria, fm->table_id, &fm->match, 0, CLS_MAX_VERSION, |
39c94593 JR |
5177 | fm->cookie, fm->cookie_mask, fm->out_port, |
5178 | fm->out_group); | |
dd51dae2 BP |
5179 | rule_criteria_require_rw(&criteria, |
5180 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
ce59413f | 5181 | error = collect_rules_loose(ofproto, &criteria, rules); |
a9b22b7f BP |
5182 | rule_criteria_destroy(&criteria); |
5183 | ||
802f84ff | 5184 | if (!error) { |
8be00367 | 5185 | delete_flows_start__(ofproto, ofm->version, rules); |
a8e547c1 | 5186 | } |
a8e547c1 BP |
5187 | |
5188 | return error; | |
064af421 BP |
5189 | } |
5190 | ||
ce59413f | 5191 | static void |
8be00367 | 5192 | delete_flows_revert(struct ofproto *ofproto, struct ofproto_flow_mod *ofm) |
ce59413f JR |
5193 | OVS_REQUIRES(ofproto_mutex) |
5194 | { | |
8be00367 JR |
5195 | struct rule_collection *rules = &ofm->old_rules; |
5196 | ||
1f42be1c | 5197 | for (size_t i = 0; i < rules->n; i++) { |
39c94593 | 5198 | struct rule *rule = rules->rules[i]; |
d79e3d70 JR |
5199 | struct oftable *table = &ofproto->tables[rule->table_id]; |
5200 | ||
5201 | /* Restore table's rule count. */ | |
5202 | table->n_flows++; | |
39c94593 JR |
5203 | |
5204 | /* Restore the original visibility of the rule. */ | |
5205 | cls_rule_restore_visibility(&rule->cr); | |
1f42be1c | 5206 | } |
ce59413f JR |
5207 | rule_collection_destroy(rules); |
5208 | } | |
5209 | ||
1f42be1c | 5210 | static void |
39c94593 | 5211 | delete_flows_finish(struct ofproto *ofproto, |
8be00367 JR |
5212 | struct ofproto_flow_mod *ofm, |
5213 | const struct flow_mod_requester *req) | |
15aaf599 | 5214 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 5215 | { |
8be00367 JR |
5216 | delete_flows_finish__(ofproto, &ofm->old_rules, ofm->fm.delete_reason, |
5217 | req); | |
ce59413f JR |
5218 | } |
5219 | ||
5220 | /* Implements OFPFC_DELETE_STRICT. */ | |
5221 | static enum ofperr | |
4fcb2083 | 5222 | delete_flow_start_strict(struct ofproto *ofproto, |
8be00367 | 5223 | struct ofproto_flow_mod *ofm) |
ce59413f JR |
5224 | OVS_REQUIRES(ofproto_mutex) |
5225 | { | |
8be00367 JR |
5226 | const struct ofputil_flow_mod *fm = &ofm->fm; |
5227 | struct rule_collection *rules = &ofm->old_rules; | |
ce59413f JR |
5228 | struct rule_criteria criteria; |
5229 | enum ofperr error; | |
5230 | ||
a9b22b7f | 5231 | rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority, |
2b7b1427 | 5232 | CLS_MAX_VERSION, fm->cookie, fm->cookie_mask, |
a9b22b7f | 5233 | fm->out_port, fm->out_group); |
dd51dae2 BP |
5234 | rule_criteria_require_rw(&criteria, |
5235 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
ce59413f | 5236 | error = collect_rules_strict(ofproto, &criteria, rules); |
a9b22b7f BP |
5237 | rule_criteria_destroy(&criteria); |
5238 | ||
802f84ff | 5239 | if (!error) { |
8be00367 | 5240 | delete_flows_start__(ofproto, ofm->version, rules); |
ce59413f JR |
5241 | } |
5242 | ||
5243 | return error; | |
5244 | } | |
5245 | ||
f695ebfa | 5246 | /* This may only be called by rule_destroy_cb()! */ |
abe529af | 5247 | static void |
f695ebfa JR |
5248 | ofproto_rule_send_removed(struct rule *rule) |
5249 | OVS_EXCLUDED(ofproto_mutex) | |
abe529af BP |
5250 | { |
5251 | struct ofputil_flow_removed fr; | |
dc437090 | 5252 | long long int used; |
abe529af | 5253 | |
5cb7a798 | 5254 | minimatch_expand(&rule->cr.match, &fr.match); |
81a76618 | 5255 | fr.priority = rule->cr.priority; |
f695ebfa JR |
5256 | |
5257 | ovs_mutex_lock(&ofproto_mutex); | |
abe529af | 5258 | fr.cookie = rule->flow_cookie; |
f695ebfa | 5259 | fr.reason = rule->removed_reason; |
95216219 | 5260 | fr.table_id = rule->table_id; |
65e0be10 BP |
5261 | calc_duration(rule->created, time_msec(), |
5262 | &fr.duration_sec, &fr.duration_nsec); | |
d10976b7 | 5263 | ovs_mutex_lock(&rule->mutex); |
abe529af | 5264 | fr.idle_timeout = rule->idle_timeout; |
fa2bad0f | 5265 | fr.hard_timeout = rule->hard_timeout; |
d10976b7 | 5266 | ovs_mutex_unlock(&rule->mutex); |
abe529af | 5267 | rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count, |
dc437090 | 5268 | &fr.byte_count, &used); |
abe529af | 5269 | connmgr_send_flow_removed(rule->ofproto->connmgr, &fr); |
f695ebfa | 5270 | ovs_mutex_unlock(&ofproto_mutex); |
abe529af BP |
5271 | } |
5272 | ||
5273 | /* Sends an OpenFlow "flow removed" message with the given 'reason' (either | |
5274 | * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its | |
5275 | * ofproto. | |
5276 | * | |
5277 | * ofproto implementation ->run() functions should use this function to expire | |
5278 | * OpenFlow flows. */ | |
5279 | void | |
5280 | ofproto_rule_expire(struct rule *rule, uint8_t reason) | |
15aaf599 | 5281 | OVS_REQUIRES(ofproto_mutex) |
abe529af | 5282 | { |
802f84ff JR |
5283 | struct rule_collection rules; |
5284 | ||
5285 | rules.rules = rules.stub; | |
5286 | rules.n = 1; | |
5287 | rules.stub[0] = rule; | |
5288 | delete_flows__(&rules, reason, NULL); | |
79eee1eb | 5289 | } |
994c9973 BP |
5290 | |
5291 | /* Reduces '*timeout' to no more than 'max'. A value of zero in either case | |
5292 | * means "infinite". */ | |
5293 | static void | |
5294 | reduce_timeout(uint16_t max, uint16_t *timeout) | |
5295 | { | |
5296 | if (max && (!*timeout || *timeout > max)) { | |
5297 | *timeout = max; | |
5298 | } | |
5299 | } | |
5300 | ||
5301 | /* If 'idle_timeout' is nonzero, and 'rule' has no idle timeout or an idle | |
5302 | * timeout greater than 'idle_timeout', lowers 'rule''s idle timeout to | |
5303 | * 'idle_timeout' seconds. Similarly for 'hard_timeout'. | |
5304 | * | |
5305 | * Suitable for implementing OFPACT_FIN_TIMEOUT. */ | |
5306 | void | |
5307 | ofproto_rule_reduce_timeouts(struct rule *rule, | |
5308 | uint16_t idle_timeout, uint16_t hard_timeout) | |
d10976b7 | 5309 | OVS_EXCLUDED(ofproto_mutex, rule->mutex) |
994c9973 BP |
5310 | { |
5311 | if (!idle_timeout && !hard_timeout) { | |
5312 | return; | |
5313 | } | |
5314 | ||
abe7b10f | 5315 | ovs_mutex_lock(&ofproto_mutex); |
417e7e66 BW |
5316 | if (ovs_list_is_empty(&rule->expirable)) { |
5317 | ovs_list_insert(&rule->ofproto->expirable, &rule->expirable); | |
994c9973 | 5318 | } |
abe7b10f | 5319 | ovs_mutex_unlock(&ofproto_mutex); |
994c9973 | 5320 | |
d10976b7 | 5321 | ovs_mutex_lock(&rule->mutex); |
994c9973 BP |
5322 | reduce_timeout(idle_timeout, &rule->idle_timeout); |
5323 | reduce_timeout(hard_timeout, &rule->hard_timeout); | |
d10976b7 | 5324 | ovs_mutex_unlock(&rule->mutex); |
994c9973 | 5325 | } |
79eee1eb | 5326 | \f |
90bf1e07 | 5327 | static enum ofperr |
2e4f5fcf | 5328 | handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
15aaf599 | 5329 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 5330 | { |
a5b8d268 | 5331 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
8be00367 | 5332 | struct ofproto_flow_mod ofm; |
f25d0cf3 BP |
5333 | uint64_t ofpacts_stub[1024 / 8]; |
5334 | struct ofpbuf ofpacts; | |
90bf1e07 | 5335 | enum ofperr error; |
064af421 | 5336 | |
76589937 | 5337 | error = reject_slave_controller(ofconn); |
9deba63b | 5338 | if (error) { |
f25d0cf3 | 5339 | goto exit; |
9deba63b | 5340 | } |
3052b0c5 | 5341 | |
f25d0cf3 | 5342 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
8be00367 | 5343 | error = ofputil_decode_flow_mod(&ofm.fm, oh, ofconn_get_protocol(ofconn), |
7e9f8266 BP |
5344 | &ofpacts, |
5345 | u16_to_ofp(ofproto->max_ports), | |
5346 | ofproto->n_tables); | |
5347 | if (!error) { | |
8be00367 JR |
5348 | error = ofproto_check_ofpacts(ofproto, ofm.fm.ofpacts, |
5349 | ofm.fm.ofpacts_len); | |
7e9f8266 | 5350 | } |
548de4dd | 5351 | if (!error) { |
baae3d02 BP |
5352 | struct flow_mod_requester req; |
5353 | ||
5354 | req.ofconn = ofconn; | |
c84d8691 | 5355 | req.request = oh; |
8be00367 | 5356 | error = handle_flow_mod__(ofproto, &ofm, &req); |
49bdc010 | 5357 | } |
a5b8d268 | 5358 | if (error) { |
f25d0cf3 | 5359 | goto exit_free_ofpacts; |
a5b8d268 | 5360 | } |
2e310801 | 5361 | |
8be00367 | 5362 | ofconn_report_flow_mod(ofconn, ofm.fm.command); |
a5b8d268 | 5363 | |
f25d0cf3 BP |
5364 | exit_free_ofpacts: |
5365 | ofpbuf_uninit(&ofpacts); | |
5366 | exit: | |
5367 | return error; | |
75a75043 BP |
5368 | } |
5369 | ||
90bf1e07 | 5370 | static enum ofperr |
8be00367 | 5371 | handle_flow_mod__(struct ofproto *ofproto, struct ofproto_flow_mod *ofm, |
baae3d02 | 5372 | const struct flow_mod_requester *req) |
15aaf599 | 5373 | OVS_EXCLUDED(ofproto_mutex) |
75a75043 | 5374 | { |
35412852 | 5375 | enum ofperr error; |
75a75043 | 5376 | |
15aaf599 | 5377 | ovs_mutex_lock(&ofproto_mutex); |
8be00367 JR |
5378 | ofm->version = ofproto->tables_version + 1; |
5379 | error = ofproto_flow_mod_start(ofproto, ofm); | |
1f42be1c | 5380 | if (!error) { |
39c94593 | 5381 | ofproto_bump_tables_version(ofproto); |
8be00367 | 5382 | ofproto_flow_mod_finish(ofproto, ofm, req); |
3052b0c5 | 5383 | } |
baae3d02 | 5384 | ofmonitor_flush(ofproto->connmgr); |
15aaf599 | 5385 | ovs_mutex_unlock(&ofproto_mutex); |
35412852 BP |
5386 | |
5387 | run_rule_executes(ofproto); | |
5388 | return error; | |
3052b0c5 BP |
5389 | } |
5390 | ||
90bf1e07 | 5391 | static enum ofperr |
d1e2cf21 | 5392 | handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh) |
9deba63b | 5393 | { |
f4f1ea7e BP |
5394 | struct ofputil_role_request request; |
5395 | struct ofputil_role_request reply; | |
9deba63b | 5396 | struct ofpbuf *buf; |
6ea4776b JR |
5397 | enum ofperr error; |
5398 | ||
f4f1ea7e | 5399 | error = ofputil_decode_role_message(oh, &request); |
6ea4776b JR |
5400 | if (error) { |
5401 | return error; | |
5402 | } | |
9deba63b | 5403 | |
f4f1ea7e | 5404 | if (request.role != OFPCR12_ROLE_NOCHANGE) { |
d26eda9f BP |
5405 | if (request.role != OFPCR12_ROLE_EQUAL |
5406 | && request.have_generation_id | |
f4f1ea7e BP |
5407 | && !ofconn_set_master_election_id(ofconn, request.generation_id)) { |
5408 | return OFPERR_OFPRRFC_STALE; | |
6ea4776b | 5409 | } |
6ea4776b | 5410 | |
f4f1ea7e BP |
5411 | ofconn_set_role(ofconn, request.role); |
5412 | } | |
9deba63b | 5413 | |
f4f1ea7e | 5414 | reply.role = ofconn_get_role(ofconn); |
147cc9d3 BP |
5415 | reply.have_generation_id = ofconn_get_master_election_id( |
5416 | ofconn, &reply.generation_id); | |
f4f1ea7e | 5417 | buf = ofputil_encode_role_reply(oh, &reply); |
b0421aa2 | 5418 | ofconn_send_reply(ofconn, buf); |
9deba63b BP |
5419 | |
5420 | return 0; | |
5421 | } | |
5422 | ||
90bf1e07 | 5423 | static enum ofperr |
6c1491fb BP |
5424 | handle_nxt_flow_mod_table_id(struct ofconn *ofconn, |
5425 | const struct ofp_header *oh) | |
5426 | { | |
982697a4 | 5427 | const struct nx_flow_mod_table_id *msg = ofpmsg_body(oh); |
27527aa0 BP |
5428 | enum ofputil_protocol cur, next; |
5429 | ||
5430 | cur = ofconn_get_protocol(ofconn); | |
5431 | next = ofputil_protocol_set_tid(cur, msg->set != 0); | |
5432 | ofconn_set_protocol(ofconn, next); | |
6c1491fb | 5433 | |
6c1491fb BP |
5434 | return 0; |
5435 | } | |
5436 | ||
90bf1e07 | 5437 | static enum ofperr |
d1e2cf21 | 5438 | handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh) |
09246b99 | 5439 | { |
982697a4 | 5440 | const struct nx_set_flow_format *msg = ofpmsg_body(oh); |
27527aa0 BP |
5441 | enum ofputil_protocol cur, next; |
5442 | enum ofputil_protocol next_base; | |
09246b99 | 5443 | |
27527aa0 BP |
5444 | next_base = ofputil_nx_flow_format_to_protocol(ntohl(msg->format)); |
5445 | if (!next_base) { | |
90bf1e07 | 5446 | return OFPERR_OFPBRC_EPERM; |
09246b99 | 5447 | } |
7ee20df1 | 5448 | |
27527aa0 BP |
5449 | cur = ofconn_get_protocol(ofconn); |
5450 | next = ofputil_protocol_set_base(cur, next_base); | |
27527aa0 | 5451 | ofconn_set_protocol(ofconn, next); |
b20f4073 | 5452 | |
7ee20df1 | 5453 | return 0; |
09246b99 BP |
5454 | } |
5455 | ||
90bf1e07 | 5456 | static enum ofperr |
54834960 EJ |
5457 | handle_nxt_set_packet_in_format(struct ofconn *ofconn, |
5458 | const struct ofp_header *oh) | |
5459 | { | |
982697a4 | 5460 | const struct nx_set_packet_in_format *msg = ofpmsg_body(oh); |
54834960 EJ |
5461 | uint32_t format; |
5462 | ||
54834960 | 5463 | format = ntohl(msg->format); |
6409e008 | 5464 | if (!ofputil_packet_in_format_is_valid(format)) { |
90bf1e07 | 5465 | return OFPERR_OFPBRC_EPERM; |
54834960 EJ |
5466 | } |
5467 | ||
54834960 EJ |
5468 | ofconn_set_packet_in_format(ofconn, format); |
5469 | return 0; | |
5470 | } | |
5471 | ||
80d5aefd BP |
5472 | static enum ofperr |
5473 | handle_nxt_set_async_config(struct ofconn *ofconn, const struct ofp_header *oh) | |
5474 | { | |
5876b4db BP |
5475 | struct ofputil_async_cfg basis = ofconn_get_async_config(ofconn); |
5476 | struct ofputil_async_cfg ac; | |
d18cc1ee | 5477 | enum ofperr error; |
80d5aefd | 5478 | |
5876b4db | 5479 | error = ofputil_decode_set_async_config(oh, false, &basis, &ac); |
d18cc1ee AA |
5480 | if (error) { |
5481 | return error; | |
5482 | } | |
80d5aefd | 5483 | |
a930d4c5 | 5484 | ofconn_set_async_config(ofconn, &ac); |
4550b647 MM |
5485 | if (ofconn_get_type(ofconn) == OFCONN_SERVICE && |
5486 | !ofconn_get_miss_send_len(ofconn)) { | |
5487 | ofconn_set_miss_send_len(ofconn, OFP_DEFAULT_MISS_SEND_LEN); | |
5488 | } | |
80d5aefd BP |
5489 | |
5490 | return 0; | |
5491 | } | |
5492 | ||
c423b3b3 AC |
5493 | static enum ofperr |
5494 | handle_nxt_get_async_request(struct ofconn *ofconn, const struct ofp_header *oh) | |
5495 | { | |
a930d4c5 | 5496 | struct ofputil_async_cfg ac = ofconn_get_async_config(ofconn); |
af7bc161 | 5497 | ofconn_send_reply(ofconn, ofputil_encode_get_async_reply(oh, &ac)); |
c423b3b3 AC |
5498 | |
5499 | return 0; | |
5500 | } | |
5501 | ||
a7349929 BP |
5502 | static enum ofperr |
5503 | handle_nxt_set_controller_id(struct ofconn *ofconn, | |
5504 | const struct ofp_header *oh) | |
5505 | { | |
982697a4 | 5506 | const struct nx_controller_id *nci = ofpmsg_body(oh); |
a7349929 | 5507 | |
a7349929 BP |
5508 | if (!is_all_zeros(nci->zero, sizeof nci->zero)) { |
5509 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
5510 | } | |
5511 | ||
5512 | ofconn_set_controller_id(ofconn, ntohs(nci->controller_id)); | |
5513 | return 0; | |
5514 | } | |
5515 | ||
90bf1e07 | 5516 | static enum ofperr |
d1e2cf21 | 5517 | handle_barrier_request(struct ofconn *ofconn, const struct ofp_header *oh) |
246e61ea | 5518 | { |
246e61ea JP |
5519 | struct ofpbuf *buf; |
5520 | ||
982697a4 BP |
5521 | buf = ofpraw_alloc_reply((oh->version == OFP10_VERSION |
5522 | ? OFPRAW_OFPT10_BARRIER_REPLY | |
5523 | : OFPRAW_OFPT11_BARRIER_REPLY), oh, 0); | |
b0421aa2 | 5524 | ofconn_send_reply(ofconn, buf); |
246e61ea JP |
5525 | return 0; |
5526 | } | |
5527 | ||
2b07c8b1 BP |
5528 | static void |
5529 | ofproto_compose_flow_refresh_update(const struct rule *rule, | |
5530 | enum nx_flow_monitor_flags flags, | |
ca6ba700 | 5531 | struct ovs_list *msgs) |
15aaf599 | 5532 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 | 5533 | { |
6f00e29b | 5534 | const struct rule_actions *actions; |
2b07c8b1 | 5535 | struct ofputil_flow_update fu; |
5cb7a798 | 5536 | struct match match; |
2b07c8b1 | 5537 | |
2b07c8b1 BP |
5538 | fu.event = (flags & (NXFMF_INITIAL | NXFMF_ADD) |
5539 | ? NXFME_ADDED : NXFME_MODIFIED); | |
5540 | fu.reason = 0; | |
d10976b7 | 5541 | ovs_mutex_lock(&rule->mutex); |
2b07c8b1 BP |
5542 | fu.idle_timeout = rule->idle_timeout; |
5543 | fu.hard_timeout = rule->hard_timeout; | |
d10976b7 | 5544 | ovs_mutex_unlock(&rule->mutex); |
2b07c8b1 BP |
5545 | fu.table_id = rule->table_id; |
5546 | fu.cookie = rule->flow_cookie; | |
5cb7a798 BP |
5547 | minimatch_expand(&rule->cr.match, &match); |
5548 | fu.match = &match; | |
6b140a4e | 5549 | fu.priority = rule->cr.priority; |
6f00e29b | 5550 | |
b20f4073 | 5551 | actions = flags & NXFMF_ACTIONS ? rule_get_actions(rule) : NULL; |
6f00e29b BP |
5552 | fu.ofpacts = actions ? actions->ofpacts : NULL; |
5553 | fu.ofpacts_len = actions ? actions->ofpacts_len : 0; | |
2b07c8b1 | 5554 | |
417e7e66 | 5555 | if (ovs_list_is_empty(msgs)) { |
2b07c8b1 BP |
5556 | ofputil_start_flow_update(msgs); |
5557 | } | |
5558 | ofputil_append_flow_update(&fu, msgs); | |
5559 | } | |
5560 | ||
5561 | void | |
a8e547c1 | 5562 | ofmonitor_compose_refresh_updates(struct rule_collection *rules, |
ca6ba700 | 5563 | struct ovs_list *msgs) |
15aaf599 | 5564 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 | 5565 | { |
a8e547c1 | 5566 | size_t i; |
2b07c8b1 | 5567 | |
a8e547c1 BP |
5568 | for (i = 0; i < rules->n; i++) { |
5569 | struct rule *rule = rules->rules[i]; | |
2b07c8b1 BP |
5570 | enum nx_flow_monitor_flags flags = rule->monitor_flags; |
5571 | rule->monitor_flags = 0; | |
5572 | ||
5573 | ofproto_compose_flow_refresh_update(rule, flags, msgs); | |
5574 | } | |
5575 | } | |
5576 | ||
5577 | static void | |
5578 | ofproto_collect_ofmonitor_refresh_rule(const struct ofmonitor *m, | |
5579 | struct rule *rule, uint64_t seqno, | |
a8e547c1 | 5580 | struct rule_collection *rules) |
15aaf599 | 5581 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
5582 | { |
5583 | enum nx_flow_monitor_flags update; | |
5584 | ||
5e8b38b0 | 5585 | if (rule_is_hidden(rule)) { |
2b07c8b1 BP |
5586 | return; |
5587 | } | |
5588 | ||
b20f4073 | 5589 | if (!ofproto_rule_has_out_port(rule, m->out_port)) { |
2b07c8b1 BP |
5590 | return; |
5591 | } | |
5592 | ||
5593 | if (seqno) { | |
5594 | if (rule->add_seqno > seqno) { | |
5595 | update = NXFMF_ADD | NXFMF_MODIFY; | |
5596 | } else if (rule->modify_seqno > seqno) { | |
5597 | update = NXFMF_MODIFY; | |
5598 | } else { | |
5599 | return; | |
5600 | } | |
5601 | ||
5602 | if (!(m->flags & update)) { | |
5603 | return; | |
5604 | } | |
5605 | } else { | |
5606 | update = NXFMF_INITIAL; | |
5607 | } | |
5608 | ||
5609 | if (!rule->monitor_flags) { | |
a8e547c1 | 5610 | rule_collection_add(rules, rule); |
2b07c8b1 BP |
5611 | } |
5612 | rule->monitor_flags |= update | (m->flags & NXFMF_ACTIONS); | |
5613 | } | |
5614 | ||
5615 | static void | |
5616 | ofproto_collect_ofmonitor_refresh_rules(const struct ofmonitor *m, | |
5617 | uint64_t seqno, | |
a8e547c1 | 5618 | struct rule_collection *rules) |
15aaf599 | 5619 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
5620 | { |
5621 | const struct ofproto *ofproto = ofconn_get_ofproto(m->ofconn); | |
2b07c8b1 | 5622 | const struct oftable *table; |
81a76618 | 5623 | struct cls_rule target; |
2b07c8b1 | 5624 | |
bd53aa17 | 5625 | cls_rule_init_from_minimatch(&target, &m->match, 0); |
2b07c8b1 | 5626 | FOR_EACH_MATCHING_TABLE (table, m->table_id, ofproto) { |
2b07c8b1 BP |
5627 | struct rule *rule; |
5628 | ||
bd53aa17 | 5629 | CLS_FOR_EACH_TARGET (rule, cr, &table->cls, &target, CLS_MAX_VERSION) { |
2b07c8b1 BP |
5630 | ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules); |
5631 | } | |
5632 | } | |
48d28ac1 | 5633 | cls_rule_destroy(&target); |
2b07c8b1 BP |
5634 | } |
5635 | ||
5636 | static void | |
5637 | ofproto_collect_ofmonitor_initial_rules(struct ofmonitor *m, | |
a8e547c1 | 5638 | struct rule_collection *rules) |
15aaf599 | 5639 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
5640 | { |
5641 | if (m->flags & NXFMF_INITIAL) { | |
5642 | ofproto_collect_ofmonitor_refresh_rules(m, 0, rules); | |
5643 | } | |
5644 | } | |
5645 | ||
5646 | void | |
5647 | ofmonitor_collect_resume_rules(struct ofmonitor *m, | |
a8e547c1 | 5648 | uint64_t seqno, struct rule_collection *rules) |
15aaf599 | 5649 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
5650 | { |
5651 | ofproto_collect_ofmonitor_refresh_rules(m, seqno, rules); | |
5652 | } | |
5653 | ||
7b900689 SH |
5654 | static enum ofperr |
5655 | flow_monitor_delete(struct ofconn *ofconn, uint32_t id) | |
5656 | OVS_REQUIRES(ofproto_mutex) | |
5657 | { | |
5658 | struct ofmonitor *m; | |
5659 | enum ofperr error; | |
5660 | ||
5661 | m = ofmonitor_lookup(ofconn, id); | |
5662 | if (m) { | |
5663 | ofmonitor_destroy(m); | |
5664 | error = 0; | |
5665 | } else { | |
5666 | error = OFPERR_OFPMOFC_UNKNOWN_MONITOR; | |
5667 | } | |
5668 | ||
5669 | return error; | |
5670 | } | |
5671 | ||
2b07c8b1 | 5672 | static enum ofperr |
982697a4 | 5673 | handle_flow_monitor_request(struct ofconn *ofconn, const struct ofp_header *oh) |
15aaf599 | 5674 | OVS_EXCLUDED(ofproto_mutex) |
2b07c8b1 BP |
5675 | { |
5676 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
2b07c8b1 | 5677 | |
0a2869d5 BP |
5678 | struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length)); |
5679 | ||
5680 | struct ofmonitor **monitors = NULL; | |
5681 | size_t allocated_monitors = 0; | |
5682 | size_t n_monitors = 0; | |
5683 | ||
5684 | enum ofperr error; | |
15aaf599 BP |
5685 | |
5686 | ovs_mutex_lock(&ofproto_mutex); | |
2b07c8b1 BP |
5687 | for (;;) { |
5688 | struct ofputil_flow_monitor_request request; | |
5689 | struct ofmonitor *m; | |
5690 | int retval; | |
5691 | ||
5692 | retval = ofputil_decode_flow_monitor_request(&request, &b); | |
5693 | if (retval == EOF) { | |
5694 | break; | |
5695 | } else if (retval) { | |
5696 | error = retval; | |
5697 | goto error; | |
5698 | } | |
5699 | ||
5700 | if (request.table_id != 0xff | |
5701 | && request.table_id >= ofproto->n_tables) { | |
5702 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
5703 | goto error; | |
5704 | } | |
5705 | ||
5706 | error = ofmonitor_create(&request, ofconn, &m); | |
5707 | if (error) { | |
5708 | goto error; | |
5709 | } | |
5710 | ||
5711 | if (n_monitors >= allocated_monitors) { | |
5712 | monitors = x2nrealloc(monitors, &allocated_monitors, | |
5713 | sizeof *monitors); | |
5714 | } | |
5715 | monitors[n_monitors++] = m; | |
5716 | } | |
5717 | ||
0a2869d5 | 5718 | struct rule_collection rules; |
a8e547c1 | 5719 | rule_collection_init(&rules); |
0a2869d5 | 5720 | for (size_t i = 0; i < n_monitors; i++) { |
2b07c8b1 BP |
5721 | ofproto_collect_ofmonitor_initial_rules(monitors[i], &rules); |
5722 | } | |
5723 | ||
0a2869d5 | 5724 | struct ovs_list replies; |
982697a4 | 5725 | ofpmp_init(&replies, oh); |
2b07c8b1 | 5726 | ofmonitor_compose_refresh_updates(&rules, &replies); |
15aaf599 BP |
5727 | ovs_mutex_unlock(&ofproto_mutex); |
5728 | ||
a8e547c1 BP |
5729 | rule_collection_destroy(&rules); |
5730 | ||
2b07c8b1 | 5731 | ofconn_send_replies(ofconn, &replies); |
2b07c8b1 BP |
5732 | free(monitors); |
5733 | ||
5734 | return 0; | |
5735 | ||
5736 | error: | |
0a2869d5 | 5737 | for (size_t i = 0; i < n_monitors; i++) { |
2b07c8b1 BP |
5738 | ofmonitor_destroy(monitors[i]); |
5739 | } | |
5740 | free(monitors); | |
4cd1bc9d BP |
5741 | ovs_mutex_unlock(&ofproto_mutex); |
5742 | ||
2b07c8b1 BP |
5743 | return error; |
5744 | } | |
5745 | ||
5746 | static enum ofperr | |
5747 | handle_flow_monitor_cancel(struct ofconn *ofconn, const struct ofp_header *oh) | |
15aaf599 | 5748 | OVS_EXCLUDED(ofproto_mutex) |
2b07c8b1 | 5749 | { |
15aaf599 | 5750 | enum ofperr error; |
2b07c8b1 BP |
5751 | uint32_t id; |
5752 | ||
5753 | id = ofputil_decode_flow_monitor_cancel(oh); | |
15aaf599 BP |
5754 | |
5755 | ovs_mutex_lock(&ofproto_mutex); | |
7b900689 | 5756 | error = flow_monitor_delete(ofconn, id); |
15aaf599 | 5757 | ovs_mutex_unlock(&ofproto_mutex); |
2b07c8b1 | 5758 | |
15aaf599 | 5759 | return error; |
2b07c8b1 BP |
5760 | } |
5761 | ||
9cae45dc JR |
5762 | /* Meters implementation. |
5763 | * | |
5764 | * Meter table entry, indexed by the OpenFlow meter_id. | |
9cae45dc JR |
5765 | * 'created' is used to compute the duration for meter stats. |
5766 | * 'list rules' is needed so that we can delete the dependent rules when the | |
5767 | * meter table entry is deleted. | |
5768 | * 'provider_meter_id' is for the provider's private use. | |
5769 | */ | |
5770 | struct meter { | |
5771 | long long int created; /* Time created. */ | |
ca6ba700 | 5772 | struct ovs_list rules; /* List of "struct rule_dpif"s. */ |
9cae45dc JR |
5773 | ofproto_meter_id provider_meter_id; |
5774 | uint16_t flags; /* Meter flags. */ | |
5775 | uint16_t n_bands; /* Number of meter bands. */ | |
5776 | struct ofputil_meter_band *bands; | |
5777 | }; | |
5778 | ||
5779 | /* | |
5780 | * This is used in instruction validation at flow set-up time, | |
5781 | * as flows may not use non-existing meters. | |
9cae45dc JR |
5782 | * Return value of UINT32_MAX signifies an invalid meter. |
5783 | */ | |
65efd2ab JR |
5784 | static uint32_t |
5785 | get_provider_meter_id(const struct ofproto *ofproto, uint32_t of_meter_id) | |
9cae45dc JR |
5786 | { |
5787 | if (of_meter_id && of_meter_id <= ofproto->meter_features.max_meters) { | |
5788 | const struct meter *meter = ofproto->meters[of_meter_id]; | |
5789 | if (meter) { | |
5790 | return meter->provider_meter_id.uint32; | |
5791 | } | |
5792 | } | |
5793 | return UINT32_MAX; | |
5794 | } | |
5795 | ||
062fea06 BP |
5796 | /* Finds the meter invoked by 'rule''s actions and adds 'rule' to the meter's |
5797 | * list of rules. */ | |
5798 | static void | |
5799 | meter_insert_rule(struct rule *rule) | |
5800 | { | |
5801 | const struct rule_actions *a = rule_get_actions(rule); | |
5802 | uint32_t meter_id = ofpacts_get_meter(a->ofpacts, a->ofpacts_len); | |
5803 | struct meter *meter = rule->ofproto->meters[meter_id]; | |
5804 | ||
417e7e66 | 5805 | ovs_list_insert(&meter->rules, &rule->meter_list_node); |
062fea06 BP |
5806 | } |
5807 | ||
9cae45dc JR |
5808 | static void |
5809 | meter_update(struct meter *meter, const struct ofputil_meter_config *config) | |
5810 | { | |
5811 | free(meter->bands); | |
5812 | ||
5813 | meter->flags = config->flags; | |
5814 | meter->n_bands = config->n_bands; | |
5815 | meter->bands = xmemdup(config->bands, | |
5816 | config->n_bands * sizeof *meter->bands); | |
5817 | } | |
5818 | ||
5819 | static struct meter * | |
5820 | meter_create(const struct ofputil_meter_config *config, | |
5821 | ofproto_meter_id provider_meter_id) | |
5822 | { | |
5823 | struct meter *meter; | |
5824 | ||
5825 | meter = xzalloc(sizeof *meter); | |
5826 | meter->provider_meter_id = provider_meter_id; | |
5827 | meter->created = time_msec(); | |
417e7e66 | 5828 | ovs_list_init(&meter->rules); |
9cae45dc JR |
5829 | |
5830 | meter_update(meter, config); | |
5831 | ||
5832 | return meter; | |
5833 | } | |
5834 | ||
6b3f7f02 JR |
5835 | static void |
5836 | meter_delete(struct ofproto *ofproto, uint32_t first, uint32_t last) | |
15aaf599 | 5837 | OVS_REQUIRES(ofproto_mutex) |
6b3f7f02 JR |
5838 | { |
5839 | uint32_t mid; | |
5840 | for (mid = first; mid <= last; ++mid) { | |
5841 | struct meter *meter = ofproto->meters[mid]; | |
5842 | if (meter) { | |
5843 | ofproto->meters[mid] = NULL; | |
5844 | ofproto->ofproto_class->meter_del(ofproto, | |
5845 | meter->provider_meter_id); | |
5846 | free(meter->bands); | |
5847 | free(meter); | |
5848 | } | |
5849 | } | |
5850 | } | |
5851 | ||
9cae45dc JR |
5852 | static enum ofperr |
5853 | handle_add_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm) | |
5854 | { | |
5855 | ofproto_meter_id provider_meter_id = { UINT32_MAX }; | |
5856 | struct meter **meterp = &ofproto->meters[mm->meter.meter_id]; | |
5857 | enum ofperr error; | |
5858 | ||
5859 | if (*meterp) { | |
5860 | return OFPERR_OFPMMFC_METER_EXISTS; | |
5861 | } | |
5862 | ||
5863 | error = ofproto->ofproto_class->meter_set(ofproto, &provider_meter_id, | |
5864 | &mm->meter); | |
5865 | if (!error) { | |
5866 | ovs_assert(provider_meter_id.uint32 != UINT32_MAX); | |
5867 | *meterp = meter_create(&mm->meter, provider_meter_id); | |
5868 | } | |
f0f8c6c2 | 5869 | return error; |
9cae45dc JR |
5870 | } |
5871 | ||
5872 | static enum ofperr | |
5873 | handle_modify_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm) | |
5874 | { | |
5875 | struct meter *meter = ofproto->meters[mm->meter.meter_id]; | |
5876 | enum ofperr error; | |
e555eb7c | 5877 | uint32_t provider_meter_id; |
9cae45dc JR |
5878 | |
5879 | if (!meter) { | |
5880 | return OFPERR_OFPMMFC_UNKNOWN_METER; | |
5881 | } | |
5882 | ||
e555eb7c | 5883 | provider_meter_id = meter->provider_meter_id.uint32; |
9cae45dc JR |
5884 | error = ofproto->ofproto_class->meter_set(ofproto, |
5885 | &meter->provider_meter_id, | |
5886 | &mm->meter); | |
e555eb7c | 5887 | ovs_assert(meter->provider_meter_id.uint32 == provider_meter_id); |
9cae45dc JR |
5888 | if (!error) { |
5889 | meter_update(meter, &mm->meter); | |
5890 | } | |
5891 | return error; | |
5892 | } | |
5893 | ||
5894 | static enum ofperr | |
baae3d02 | 5895 | handle_delete_meter(struct ofconn *ofconn, struct ofputil_meter_mod *mm) |
15aaf599 | 5896 | OVS_EXCLUDED(ofproto_mutex) |
9cae45dc JR |
5897 | { |
5898 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5899 | uint32_t meter_id = mm->meter.meter_id; | |
a8e547c1 BP |
5900 | struct rule_collection rules; |
5901 | enum ofperr error = 0; | |
9cae45dc | 5902 | uint32_t first, last; |
9cae45dc JR |
5903 | |
5904 | if (meter_id == OFPM13_ALL) { | |
5905 | first = 1; | |
5906 | last = ofproto->meter_features.max_meters; | |
5907 | } else { | |
5908 | if (!meter_id || meter_id > ofproto->meter_features.max_meters) { | |
5909 | return 0; | |
5910 | } | |
5911 | first = last = meter_id; | |
5912 | } | |
5913 | ||
5914 | /* First delete the rules that use this meter. If any of those rules are | |
5915 | * currently being modified, postpone the whole operation until later. */ | |
a8e547c1 | 5916 | rule_collection_init(&rules); |
15aaf599 | 5917 | ovs_mutex_lock(&ofproto_mutex); |
9cae45dc JR |
5918 | for (meter_id = first; meter_id <= last; ++meter_id) { |
5919 | struct meter *meter = ofproto->meters[meter_id]; | |
417e7e66 | 5920 | if (meter && !ovs_list_is_empty(&meter->rules)) { |
9cae45dc JR |
5921 | struct rule *rule; |
5922 | ||
5923 | LIST_FOR_EACH (rule, meter_list_node, &meter->rules) { | |
a8e547c1 | 5924 | rule_collection_add(&rules, rule); |
9cae45dc JR |
5925 | } |
5926 | } | |
5927 | } | |
802f84ff | 5928 | delete_flows__(&rules, OFPRR_METER_DELETE, NULL); |
9cae45dc JR |
5929 | |
5930 | /* Delete the meters. */ | |
6b3f7f02 | 5931 | meter_delete(ofproto, first, last); |
9cae45dc | 5932 | |
15aaf599 | 5933 | ovs_mutex_unlock(&ofproto_mutex); |
a8e547c1 BP |
5934 | |
5935 | return error; | |
9cae45dc JR |
5936 | } |
5937 | ||
5938 | static enum ofperr | |
5939 | handle_meter_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
5940 | { | |
5941 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5942 | struct ofputil_meter_mod mm; | |
5943 | uint64_t bands_stub[256 / 8]; | |
5944 | struct ofpbuf bands; | |
5945 | uint32_t meter_id; | |
5946 | enum ofperr error; | |
5947 | ||
5948 | error = reject_slave_controller(ofconn); | |
5949 | if (error) { | |
5950 | return error; | |
5951 | } | |
5952 | ||
5953 | ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub); | |
5954 | ||
5955 | error = ofputil_decode_meter_mod(oh, &mm, &bands); | |
5956 | if (error) { | |
5957 | goto exit_free_bands; | |
5958 | } | |
5959 | ||
5960 | meter_id = mm.meter.meter_id; | |
5961 | ||
5962 | if (mm.command != OFPMC13_DELETE) { | |
5963 | /* Fails also when meters are not implemented by the provider. */ | |
b31e8700 | 5964 | if (meter_id == 0 || meter_id > OFPM13_MAX) { |
9cae45dc JR |
5965 | error = OFPERR_OFPMMFC_INVALID_METER; |
5966 | goto exit_free_bands; | |
b31e8700 JR |
5967 | } else if (meter_id > ofproto->meter_features.max_meters) { |
5968 | error = OFPERR_OFPMMFC_OUT_OF_METERS; | |
5969 | goto exit_free_bands; | |
9cae45dc JR |
5970 | } |
5971 | if (mm.meter.n_bands > ofproto->meter_features.max_bands) { | |
5972 | error = OFPERR_OFPMMFC_OUT_OF_BANDS; | |
5973 | goto exit_free_bands; | |
5974 | } | |
5975 | } | |
5976 | ||
5977 | switch (mm.command) { | |
5978 | case OFPMC13_ADD: | |
5979 | error = handle_add_meter(ofproto, &mm); | |
5980 | break; | |
5981 | ||
5982 | case OFPMC13_MODIFY: | |
5983 | error = handle_modify_meter(ofproto, &mm); | |
5984 | break; | |
5985 | ||
5986 | case OFPMC13_DELETE: | |
baae3d02 | 5987 | error = handle_delete_meter(ofconn, &mm); |
9cae45dc JR |
5988 | break; |
5989 | ||
5990 | default: | |
5991 | error = OFPERR_OFPMMFC_BAD_COMMAND; | |
5992 | break; | |
5993 | } | |
5994 | ||
3c35db62 NR |
5995 | if (!error) { |
5996 | struct ofputil_requestforward rf; | |
5997 | rf.xid = oh->xid; | |
5998 | rf.reason = OFPRFR_METER_MOD; | |
5999 | rf.meter_mod = &mm; | |
6000 | connmgr_send_requestforward(ofproto->connmgr, ofconn, &rf); | |
6001 | } | |
6002 | ||
9cae45dc JR |
6003 | exit_free_bands: |
6004 | ofpbuf_uninit(&bands); | |
6005 | return error; | |
6006 | } | |
6007 | ||
6008 | static enum ofperr | |
6009 | handle_meter_features_request(struct ofconn *ofconn, | |
6010 | const struct ofp_header *request) | |
6011 | { | |
6012 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
6013 | struct ofputil_meter_features features; | |
6014 | struct ofpbuf *b; | |
6015 | ||
6016 | if (ofproto->ofproto_class->meter_get_features) { | |
6017 | ofproto->ofproto_class->meter_get_features(ofproto, &features); | |
6018 | } else { | |
6019 | memset(&features, 0, sizeof features); | |
6020 | } | |
6021 | b = ofputil_encode_meter_features_reply(&features, request); | |
6022 | ||
6023 | ofconn_send_reply(ofconn, b); | |
6024 | return 0; | |
6025 | } | |
6026 | ||
6027 | static enum ofperr | |
6028 | handle_meter_request(struct ofconn *ofconn, const struct ofp_header *request, | |
6029 | enum ofptype type) | |
6030 | { | |
6031 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
ca6ba700 | 6032 | struct ovs_list replies; |
9cae45dc JR |
6033 | uint64_t bands_stub[256 / 8]; |
6034 | struct ofpbuf bands; | |
6035 | uint32_t meter_id, first, last; | |
6036 | ||
6037 | ofputil_decode_meter_request(request, &meter_id); | |
6038 | ||
6039 | if (meter_id == OFPM13_ALL) { | |
6040 | first = 1; | |
6041 | last = ofproto->meter_features.max_meters; | |
6042 | } else { | |
6043 | if (!meter_id || meter_id > ofproto->meter_features.max_meters || | |
6044 | !ofproto->meters[meter_id]) { | |
6045 | return OFPERR_OFPMMFC_UNKNOWN_METER; | |
6046 | } | |
6047 | first = last = meter_id; | |
6048 | } | |
6049 | ||
6050 | ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub); | |
6051 | ofpmp_init(&replies, request); | |
6052 | ||
6053 | for (meter_id = first; meter_id <= last; ++meter_id) { | |
6054 | struct meter *meter = ofproto->meters[meter_id]; | |
6055 | if (!meter) { | |
6056 | continue; /* Skip non-existing meters. */ | |
6057 | } | |
261bd854 | 6058 | if (type == OFPTYPE_METER_STATS_REQUEST) { |
9cae45dc JR |
6059 | struct ofputil_meter_stats stats; |
6060 | ||
6061 | stats.meter_id = meter_id; | |
6062 | ||
6063 | /* Provider sets the packet and byte counts, we do the rest. */ | |
417e7e66 | 6064 | stats.flow_count = ovs_list_size(&meter->rules); |
9cae45dc JR |
6065 | calc_duration(meter->created, time_msec(), |
6066 | &stats.duration_sec, &stats.duration_nsec); | |
6067 | stats.n_bands = meter->n_bands; | |
6068 | ofpbuf_clear(&bands); | |
6069 | stats.bands | |
6070 | = ofpbuf_put_uninit(&bands, | |
6071 | meter->n_bands * sizeof *stats.bands); | |
6072 | ||
6073 | if (!ofproto->ofproto_class->meter_get(ofproto, | |
6074 | meter->provider_meter_id, | |
6075 | &stats)) { | |
6076 | ofputil_append_meter_stats(&replies, &stats); | |
6077 | } | |
6078 | } else { /* type == OFPTYPE_METER_CONFIG_REQUEST */ | |
6079 | struct ofputil_meter_config config; | |
6080 | ||
6081 | config.meter_id = meter_id; | |
6082 | config.flags = meter->flags; | |
6083 | config.n_bands = meter->n_bands; | |
6084 | config.bands = meter->bands; | |
6085 | ofputil_append_meter_config(&replies, &config); | |
6086 | } | |
6087 | } | |
6088 | ||
6089 | ofconn_send_replies(ofconn, &replies); | |
6090 | ofpbuf_uninit(&bands); | |
6091 | return 0; | |
6092 | } | |
6093 | ||
3fc3b679 AZ |
6094 | static bool |
6095 | ofproto_group_lookup__(const struct ofproto *ofproto, uint32_t group_id, | |
6096 | struct ofgroup **group) | |
6097 | OVS_REQ_RDLOCK(ofproto->groups_rwlock) | |
7395c052 | 6098 | { |
7395c052 NZ |
6099 | HMAP_FOR_EACH_IN_BUCKET (*group, hmap_node, |
6100 | hash_int(group_id, 0), &ofproto->groups) { | |
6101 | if ((*group)->group_id == group_id) { | |
7395c052 NZ |
6102 | return true; |
6103 | } | |
6104 | } | |
3fc3b679 | 6105 | |
7395c052 NZ |
6106 | return false; |
6107 | } | |
6108 | ||
3fc3b679 AZ |
6109 | /* If the group exists, this function increments the groups's reference count. |
6110 | * | |
6111 | * Make sure to call ofproto_group_unref() after no longer needing to maintain | |
6112 | * a reference to the group. */ | |
6113 | bool | |
6114 | ofproto_group_lookup(const struct ofproto *ofproto, uint32_t group_id, | |
6115 | struct ofgroup **group) | |
7395c052 | 6116 | { |
3fc3b679 AZ |
6117 | bool found; |
6118 | ||
6119 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
6120 | found = ofproto_group_lookup__(ofproto, group_id, group); | |
6121 | if (found) { | |
6122 | ofproto_group_ref(*group); | |
7395c052 | 6123 | } |
3fc3b679 AZ |
6124 | ovs_rwlock_unlock(&ofproto->groups_rwlock); |
6125 | return found; | |
7395c052 NZ |
6126 | } |
6127 | ||
6128 | static bool | |
7e9f8266 | 6129 | ofproto_group_exists__(const struct ofproto *ofproto, uint32_t group_id) |
7395c052 NZ |
6130 | OVS_REQ_RDLOCK(ofproto->groups_rwlock) |
6131 | { | |
6132 | struct ofgroup *grp; | |
6133 | ||
6134 | HMAP_FOR_EACH_IN_BUCKET (grp, hmap_node, | |
6135 | hash_int(group_id, 0), &ofproto->groups) { | |
6136 | if (grp->group_id == group_id) { | |
6137 | return true; | |
6138 | } | |
6139 | } | |
6140 | return false; | |
6141 | } | |
6142 | ||
7e9f8266 BP |
6143 | static bool |
6144 | ofproto_group_exists(const struct ofproto *ofproto, uint32_t group_id) | |
6145 | OVS_EXCLUDED(ofproto->groups_rwlock) | |
6146 | { | |
6147 | bool exists; | |
6148 | ||
6149 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
6150 | exists = ofproto_group_exists__(ofproto, group_id); | |
6151 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
6152 | ||
6153 | return exists; | |
6154 | } | |
6155 | ||
732feb93 SH |
6156 | static uint32_t |
6157 | group_get_ref_count(struct ofgroup *group) | |
6158 | OVS_EXCLUDED(ofproto_mutex) | |
6159 | { | |
eaf004bd | 6160 | struct ofproto *ofproto = CONST_CAST(struct ofproto *, group->ofproto); |
732feb93 SH |
6161 | struct rule_criteria criteria; |
6162 | struct rule_collection rules; | |
6163 | struct match match; | |
6164 | enum ofperr error; | |
6165 | uint32_t count; | |
6166 | ||
6167 | match_init_catchall(&match); | |
2b7b1427 JR |
6168 | rule_criteria_init(&criteria, 0xff, &match, 0, CLS_MAX_VERSION, htonll(0), |
6169 | htonll(0), OFPP_ANY, group->group_id); | |
732feb93 SH |
6170 | ovs_mutex_lock(&ofproto_mutex); |
6171 | error = collect_rules_loose(ofproto, &criteria, &rules); | |
6172 | ovs_mutex_unlock(&ofproto_mutex); | |
6173 | rule_criteria_destroy(&criteria); | |
6174 | ||
6175 | count = !error && rules.n < UINT32_MAX ? rules.n : UINT32_MAX; | |
6176 | ||
6177 | rule_collection_destroy(&rules); | |
6178 | return count; | |
6179 | } | |
6180 | ||
7395c052 | 6181 | static void |
ca6ba700 | 6182 | append_group_stats(struct ofgroup *group, struct ovs_list *replies) |
7395c052 NZ |
6183 | { |
6184 | struct ofputil_group_stats ogs; | |
eaf004bd | 6185 | const struct ofproto *ofproto = group->ofproto; |
7395c052 NZ |
6186 | long long int now = time_msec(); |
6187 | int error; | |
6188 | ||
646b2a9c SH |
6189 | ogs.bucket_stats = xmalloc(group->n_buckets * sizeof *ogs.bucket_stats); |
6190 | ||
732feb93 SH |
6191 | /* Provider sets the packet and byte counts, we do the rest. */ |
6192 | ogs.ref_count = group_get_ref_count(group); | |
6193 | ogs.n_buckets = group->n_buckets; | |
6194 | ||
7395c052 NZ |
6195 | error = (ofproto->ofproto_class->group_get_stats |
6196 | ? ofproto->ofproto_class->group_get_stats(group, &ogs) | |
6197 | : EOPNOTSUPP); | |
6198 | if (error) { | |
7395c052 NZ |
6199 | ogs.packet_count = UINT64_MAX; |
6200 | ogs.byte_count = UINT64_MAX; | |
7395c052 NZ |
6201 | memset(ogs.bucket_stats, 0xff, |
6202 | ogs.n_buckets * sizeof *ogs.bucket_stats); | |
6203 | } | |
6204 | ||
6205 | ogs.group_id = group->group_id; | |
6206 | calc_duration(group->created, now, &ogs.duration_sec, &ogs.duration_nsec); | |
6207 | ||
6208 | ofputil_append_group_stats(replies, &ogs); | |
646b2a9c SH |
6209 | |
6210 | free(ogs.bucket_stats); | |
7395c052 NZ |
6211 | } |
6212 | ||
19187a71 BP |
6213 | static void |
6214 | handle_group_request(struct ofconn *ofconn, | |
6215 | const struct ofp_header *request, uint32_t group_id, | |
ca6ba700 | 6216 | void (*cb)(struct ofgroup *, struct ovs_list *replies)) |
7395c052 NZ |
6217 | { |
6218 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
7395c052 | 6219 | struct ofgroup *group; |
ca6ba700 | 6220 | struct ovs_list replies; |
7395c052 NZ |
6221 | |
6222 | ofpmp_init(&replies, request); | |
7395c052 NZ |
6223 | if (group_id == OFPG_ALL) { |
6224 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
6225 | HMAP_FOR_EACH (group, hmap_node, &ofproto->groups) { | |
19187a71 | 6226 | cb(group, &replies); |
7395c052 NZ |
6227 | } |
6228 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
6229 | } else { | |
6230 | if (ofproto_group_lookup(ofproto, group_id, &group)) { | |
19187a71 | 6231 | cb(group, &replies); |
809c7548 | 6232 | ofproto_group_unref(group); |
7395c052 NZ |
6233 | } |
6234 | } | |
7395c052 | 6235 | ofconn_send_replies(ofconn, &replies); |
7395c052 NZ |
6236 | } |
6237 | ||
6238 | static enum ofperr | |
19187a71 BP |
6239 | handle_group_stats_request(struct ofconn *ofconn, |
6240 | const struct ofp_header *request) | |
7395c052 | 6241 | { |
19187a71 BP |
6242 | uint32_t group_id; |
6243 | enum ofperr error; | |
7395c052 | 6244 | |
19187a71 BP |
6245 | error = ofputil_decode_group_stats_request(request, &group_id); |
6246 | if (error) { | |
6247 | return error; | |
7395c052 | 6248 | } |
7395c052 | 6249 | |
19187a71 BP |
6250 | handle_group_request(ofconn, request, group_id, append_group_stats); |
6251 | return 0; | |
6252 | } | |
6253 | ||
6254 | static void | |
ca6ba700 | 6255 | append_group_desc(struct ofgroup *group, struct ovs_list *replies) |
19187a71 BP |
6256 | { |
6257 | struct ofputil_group_desc gds; | |
7395c052 | 6258 | |
19187a71 BP |
6259 | gds.group_id = group->group_id; |
6260 | gds.type = group->type; | |
53eb84a5 SH |
6261 | gds.props = group->props; |
6262 | ||
19187a71 BP |
6263 | ofputil_append_group_desc_reply(&gds, &group->buckets, replies); |
6264 | } | |
6265 | ||
6266 | static enum ofperr | |
6267 | handle_group_desc_stats_request(struct ofconn *ofconn, | |
6268 | const struct ofp_header *request) | |
6269 | { | |
6270 | handle_group_request(ofconn, request, | |
6271 | ofputil_decode_group_desc_request(request), | |
6272 | append_group_desc); | |
7395c052 NZ |
6273 | return 0; |
6274 | } | |
6275 | ||
6276 | static enum ofperr | |
6277 | handle_group_features_stats_request(struct ofconn *ofconn, | |
6278 | const struct ofp_header *request) | |
6279 | { | |
6280 | struct ofproto *p = ofconn_get_ofproto(ofconn); | |
6281 | struct ofpbuf *msg; | |
6282 | ||
6283 | msg = ofputil_encode_group_features_reply(&p->ogf, request); | |
6284 | if (msg) { | |
6285 | ofconn_send_reply(ofconn, msg); | |
6286 | } | |
6287 | ||
6288 | return 0; | |
6289 | } | |
6290 | ||
56085be5 | 6291 | static void |
e016fb63 BP |
6292 | put_queue_get_config_reply(struct ofport *port, uint32_t queue, |
6293 | struct ovs_list *replies) | |
e8f9a7bb | 6294 | { |
e016fb63 | 6295 | struct ofputil_queue_config qc; |
e8f9a7bb | 6296 | |
e016fb63 BP |
6297 | /* None of the existing queues have compatible properties, so we hard-code |
6298 | * omitting min_rate and max_rate. */ | |
6299 | qc.port = port->ofp_port; | |
6300 | qc.queue = queue; | |
6301 | qc.min_rate = UINT16_MAX; | |
6302 | qc.max_rate = UINT16_MAX; | |
6303 | ofputil_append_queue_get_config_reply(&qc, replies); | |
6304 | } | |
e8f9a7bb | 6305 | |
e016fb63 BP |
6306 | static int |
6307 | handle_queue_get_config_request_for_port(struct ofport *port, uint32_t queue, | |
6308 | struct ovs_list *replies) | |
6309 | { | |
6310 | struct smap details = SMAP_INITIALIZER(&details); | |
6311 | if (queue != OFPQ_ALL) { | |
6312 | int error = netdev_get_queue(port->netdev, queue, &details); | |
6313 | switch (error) { | |
6314 | case 0: | |
6315 | put_queue_get_config_reply(port, queue, replies); | |
6316 | break; | |
6317 | case EOPNOTSUPP: | |
6318 | case EINVAL: | |
6319 | return OFPERR_OFPQOFC_BAD_QUEUE; | |
6320 | default: | |
6321 | return OFPERR_NXQOFC_QUEUE_ERROR; | |
6322 | } | |
6323 | } else { | |
6324 | struct netdev_queue_dump queue_dump; | |
6325 | uint32_t queue_id; | |
6326 | ||
6327 | NETDEV_QUEUE_FOR_EACH (&queue_id, &details, &queue_dump, | |
6328 | port->netdev) { | |
6329 | put_queue_get_config_reply(port, queue_id, replies); | |
6330 | } | |
6331 | } | |
6332 | smap_destroy(&details); | |
6333 | return 0; | |
56085be5 BP |
6334 | } |
6335 | ||
6336 | static enum ofperr | |
6337 | handle_queue_get_config_request(struct ofconn *ofconn, | |
6338 | const struct ofp_header *oh) | |
6339 | { | |
e016fb63 BP |
6340 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
6341 | struct ovs_list replies; | |
6342 | struct ofport *port; | |
6343 | ofp_port_t req_port; | |
6344 | uint32_t req_queue; | |
6345 | enum ofperr error; | |
6346 | ||
6347 | error = ofputil_decode_queue_get_config_request(oh, &req_port, &req_queue); | |
6348 | if (error) { | |
6349 | return error; | |
6350 | } | |
6351 | ||
6352 | ofputil_start_queue_get_config_reply(oh, &replies); | |
6353 | if (req_port == OFPP_ANY) { | |
6354 | error = OFPERR_OFPQOFC_BAD_QUEUE; | |
6355 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { | |
6356 | if (!handle_queue_get_config_request_for_port(port, req_queue, | |
6357 | &replies)) { | |
6358 | error = 0; | |
6359 | } | |
6360 | } | |
6361 | } else { | |
6362 | port = ofproto_get_port(ofproto, req_port); | |
6363 | error = (port | |
6364 | ? handle_queue_get_config_request_for_port(port, req_queue, | |
6365 | &replies) | |
6366 | : OFPERR_OFPQOFC_BAD_PORT); | |
6367 | } | |
6368 | if (!error) { | |
6369 | ofconn_send_replies(ofconn, &replies); | |
6370 | } else { | |
6371 | ofpbuf_list_delete(&replies); | |
6372 | } | |
6373 | ||
6374 | return error; | |
e8f9a7bb VG |
6375 | } |
6376 | ||
809c7548 | 6377 | static enum ofperr |
63eded98 | 6378 | init_group(struct ofproto *ofproto, const struct ofputil_group_mod *gm, |
809c7548 RW |
6379 | struct ofgroup **ofgroup) |
6380 | { | |
6381 | enum ofperr error; | |
eaf004bd | 6382 | const long long int now = time_msec(); |
809c7548 RW |
6383 | |
6384 | if (gm->group_id > OFPG_MAX) { | |
6385 | return OFPERR_OFPGMFC_INVALID_GROUP; | |
6386 | } | |
6387 | if (gm->type > OFPGT11_FF) { | |
6388 | return OFPERR_OFPGMFC_BAD_TYPE; | |
6389 | } | |
6390 | ||
6391 | *ofgroup = ofproto->ofproto_class->group_alloc(); | |
6392 | if (!*ofgroup) { | |
6393 | VLOG_WARN_RL(&rl, "%s: failed to allocate group", ofproto->name); | |
6394 | return OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
6395 | } | |
6396 | ||
eaf004bd AZ |
6397 | (*ofgroup)->ofproto = ofproto; |
6398 | *CONST_CAST(uint32_t *, &((*ofgroup)->group_id)) = gm->group_id; | |
6399 | *CONST_CAST(enum ofp11_group_type *, &(*ofgroup)->type) = gm->type; | |
6400 | *CONST_CAST(long long int *, &((*ofgroup)->created)) = now; | |
6401 | *CONST_CAST(long long int *, &((*ofgroup)->modified)) = now; | |
809c7548 RW |
6402 | ovs_refcount_init(&(*ofgroup)->ref_count); |
6403 | ||
417e7e66 | 6404 | ovs_list_init(&(*ofgroup)->buckets); |
63eded98 BP |
6405 | ofputil_bucket_clone_list(&(*ofgroup)->buckets, &gm->buckets, NULL); |
6406 | ||
eaf004bd | 6407 | *CONST_CAST(uint32_t *, &(*ofgroup)->n_buckets) = |
417e7e66 | 6408 | ovs_list_size(&(*ofgroup)->buckets); |
809c7548 | 6409 | |
bc65c25a SH |
6410 | memcpy(CONST_CAST(struct ofputil_group_props *, &(*ofgroup)->props), |
6411 | &gm->props, sizeof (struct ofputil_group_props)); | |
6412 | ||
809c7548 RW |
6413 | /* Construct called BEFORE any locks are held. */ |
6414 | error = ofproto->ofproto_class->group_construct(*ofgroup); | |
6415 | if (error) { | |
6416 | ofputil_bucket_list_destroy(&(*ofgroup)->buckets); | |
6417 | ofproto->ofproto_class->group_dealloc(*ofgroup); | |
6418 | } | |
6419 | return error; | |
6420 | } | |
6421 | ||
6c5b90ce BP |
6422 | /* Implements the OFPGC11_ADD operation specified by 'gm', adding a group to |
6423 | * 'ofproto''s group table. Returns 0 on success or an OpenFlow error code on | |
6424 | * failure. */ | |
7395c052 | 6425 | static enum ofperr |
63eded98 | 6426 | add_group(struct ofproto *ofproto, const struct ofputil_group_mod *gm) |
7395c052 NZ |
6427 | { |
6428 | struct ofgroup *ofgroup; | |
6429 | enum ofperr error; | |
6430 | ||
7395c052 | 6431 | /* Allocate new group and initialize it. */ |
809c7548 | 6432 | error = init_group(ofproto, gm, &ofgroup); |
7395c052 | 6433 | if (error) { |
809c7548 | 6434 | return error; |
7395c052 NZ |
6435 | } |
6436 | ||
6437 | /* We wrlock as late as possible to minimize the time we jam any other | |
6438 | * threads: No visible state changes before acquiring the lock. */ | |
6439 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
6440 | ||
6441 | if (ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) { | |
6442 | error = OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
6443 | goto unlock_out; | |
6444 | } | |
6445 | ||
7e9f8266 | 6446 | if (ofproto_group_exists__(ofproto, gm->group_id)) { |
7395c052 NZ |
6447 | error = OFPERR_OFPGMFC_GROUP_EXISTS; |
6448 | goto unlock_out; | |
6449 | } | |
6450 | ||
6451 | if (!error) { | |
6452 | /* Insert new group. */ | |
6453 | hmap_insert(&ofproto->groups, &ofgroup->hmap_node, | |
6454 | hash_int(ofgroup->group_id, 0)); | |
6455 | ofproto->n_groups[ofgroup->type]++; | |
6456 | ||
6457 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
6458 | return error; | |
6459 | } | |
6460 | ||
6461 | unlock_out: | |
6462 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
6463 | ofproto->ofproto_class->group_destruct(ofgroup); | |
7395c052 NZ |
6464 | ofputil_bucket_list_destroy(&ofgroup->buckets); |
6465 | ofproto->ofproto_class->group_dealloc(ofgroup); | |
6466 | ||
6467 | return error; | |
6468 | } | |
6469 | ||
fce4730c SH |
6470 | /* Adds all of the buckets from 'ofgroup' to 'new_ofgroup'. The buckets |
6471 | * already in 'new_ofgroup' will be placed just after the (copy of the) bucket | |
6472 | * in 'ofgroup' with bucket ID 'command_bucket_id'. Special | |
6473 | * 'command_bucket_id' values OFPG15_BUCKET_FIRST and OFPG15_BUCKET_LAST are | |
6474 | * also honored. */ | |
6475 | static enum ofperr | |
6476 | copy_buckets_for_insert_bucket(const struct ofgroup *ofgroup, | |
6477 | struct ofgroup *new_ofgroup, | |
6478 | uint32_t command_bucket_id) | |
6479 | { | |
6480 | struct ofputil_bucket *last = NULL; | |
6481 | ||
6482 | if (command_bucket_id <= OFPG15_BUCKET_MAX) { | |
6483 | /* Check here to ensure that a bucket corresponding to | |
6484 | * command_bucket_id exists in the old bucket list. | |
6485 | * | |
6486 | * The subsequent search of below of new_ofgroup covers | |
6487 | * both buckets in the old bucket list and buckets added | |
6488 | * by the insert buckets group mod message this function processes. */ | |
6489 | if (!ofputil_bucket_find(&ofgroup->buckets, command_bucket_id)) { | |
6490 | return OFPERR_OFPGMFC_UNKNOWN_BUCKET; | |
6491 | } | |
6492 | ||
417e7e66 | 6493 | if (!ovs_list_is_empty(&new_ofgroup->buckets)) { |
fce4730c SH |
6494 | last = ofputil_bucket_list_back(&new_ofgroup->buckets); |
6495 | } | |
6496 | } | |
6497 | ||
6498 | ofputil_bucket_clone_list(&new_ofgroup->buckets, &ofgroup->buckets, NULL); | |
6499 | ||
23a31238 | 6500 | if (ofputil_bucket_check_duplicate_id(&new_ofgroup->buckets)) { |
d2873d53 | 6501 | VLOG_INFO_RL(&rl, "Duplicate bucket id"); |
fce4730c SH |
6502 | return OFPERR_OFPGMFC_BUCKET_EXISTS; |
6503 | } | |
6504 | ||
6505 | /* Rearrange list according to command_bucket_id */ | |
6506 | if (command_bucket_id == OFPG15_BUCKET_LAST) { | |
417e7e66 | 6507 | if (!ovs_list_is_empty(&ofgroup->buckets)) { |
8e19e655 BP |
6508 | struct ofputil_bucket *new_first; |
6509 | const struct ofputil_bucket *first; | |
fce4730c | 6510 | |
8e19e655 BP |
6511 | first = ofputil_bucket_list_front(&ofgroup->buckets); |
6512 | new_first = ofputil_bucket_find(&new_ofgroup->buckets, | |
6513 | first->bucket_id); | |
fce4730c | 6514 | |
417e7e66 | 6515 | ovs_list_splice(new_ofgroup->buckets.next, &new_first->list_node, |
8e19e655 BP |
6516 | &new_ofgroup->buckets); |
6517 | } | |
fce4730c SH |
6518 | } else if (command_bucket_id <= OFPG15_BUCKET_MAX && last) { |
6519 | struct ofputil_bucket *after; | |
6520 | ||
6521 | /* Presence of bucket is checked above so after should never be NULL */ | |
6522 | after = ofputil_bucket_find(&new_ofgroup->buckets, command_bucket_id); | |
6523 | ||
417e7e66 | 6524 | ovs_list_splice(after->list_node.next, new_ofgroup->buckets.next, |
fce4730c SH |
6525 | last->list_node.next); |
6526 | } | |
6527 | ||
6528 | return 0; | |
6529 | } | |
6530 | ||
6531 | /* Appends all of the a copy of all the buckets from 'ofgroup' to 'new_ofgroup' | |
6532 | * with the exception of the bucket whose bucket id is 'command_bucket_id'. | |
6533 | * Special 'command_bucket_id' values OFPG15_BUCKET_FIRST, OFPG15_BUCKET_LAST | |
6534 | * and OFPG15_BUCKET_ALL are also honored. */ | |
6535 | static enum ofperr | |
6536 | copy_buckets_for_remove_bucket(const struct ofgroup *ofgroup, | |
6537 | struct ofgroup *new_ofgroup, | |
6538 | uint32_t command_bucket_id) | |
6539 | { | |
6540 | const struct ofputil_bucket *skip = NULL; | |
6541 | ||
6542 | if (command_bucket_id == OFPG15_BUCKET_ALL) { | |
6543 | return 0; | |
6544 | } | |
6545 | ||
6546 | if (command_bucket_id == OFPG15_BUCKET_FIRST) { | |
417e7e66 | 6547 | if (!ovs_list_is_empty(&ofgroup->buckets)) { |
fce4730c SH |
6548 | skip = ofputil_bucket_list_front(&ofgroup->buckets); |
6549 | } | |
6550 | } else if (command_bucket_id == OFPG15_BUCKET_LAST) { | |
417e7e66 | 6551 | if (!ovs_list_is_empty(&ofgroup->buckets)) { |
fce4730c SH |
6552 | skip = ofputil_bucket_list_back(&ofgroup->buckets); |
6553 | } | |
6554 | } else { | |
6555 | skip = ofputil_bucket_find(&ofgroup->buckets, command_bucket_id); | |
6556 | if (!skip) { | |
6557 | return OFPERR_OFPGMFC_UNKNOWN_BUCKET; | |
6558 | } | |
6559 | } | |
6560 | ||
6561 | ofputil_bucket_clone_list(&new_ofgroup->buckets, &ofgroup->buckets, skip); | |
6562 | ||
6563 | return 0; | |
6564 | } | |
6565 | ||
6566 | /* Implements OFPGC11_MODIFY, OFPGC15_INSERT_BUCKET and | |
6567 | * OFPGC15_REMOVE_BUCKET. Returns 0 on success or an OpenFlow error code | |
6c5b90ce | 6568 | * on failure. |
7395c052 | 6569 | * |
809c7548 RW |
6570 | * Note that the group is re-created and then replaces the old group in |
6571 | * ofproto's ofgroup hash map. Thus, the group is never altered while users of | |
6c5b90ce | 6572 | * the xlate module hold a pointer to the group. */ |
7395c052 | 6573 | static enum ofperr |
63eded98 | 6574 | modify_group(struct ofproto *ofproto, const struct ofputil_group_mod *gm) |
7395c052 | 6575 | { |
809c7548 | 6576 | struct ofgroup *ofgroup, *new_ofgroup, *retiring; |
7395c052 NZ |
6577 | enum ofperr error; |
6578 | ||
809c7548 RW |
6579 | error = init_group(ofproto, gm, &new_ofgroup); |
6580 | if (error) { | |
6581 | return error; | |
7395c052 NZ |
6582 | } |
6583 | ||
809c7548 | 6584 | retiring = new_ofgroup; |
7395c052 | 6585 | |
3fc3b679 AZ |
6586 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); |
6587 | if (!ofproto_group_lookup__(ofproto, gm->group_id, &ofgroup)) { | |
7395c052 | 6588 | error = OFPERR_OFPGMFC_UNKNOWN_GROUP; |
809c7548 | 6589 | goto out; |
7395c052 | 6590 | } |
809c7548 RW |
6591 | |
6592 | /* Ofproto's group write lock is held now. */ | |
7395c052 NZ |
6593 | if (ofgroup->type != gm->type |
6594 | && ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) { | |
6595 | error = OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
809c7548 | 6596 | goto out; |
7395c052 NZ |
6597 | } |
6598 | ||
fce4730c SH |
6599 | /* Manipulate bucket list for bucket commands */ |
6600 | if (gm->command == OFPGC15_INSERT_BUCKET) { | |
6601 | error = copy_buckets_for_insert_bucket(ofgroup, new_ofgroup, | |
6602 | gm->command_bucket_id); | |
6603 | } else if (gm->command == OFPGC15_REMOVE_BUCKET) { | |
6604 | error = copy_buckets_for_remove_bucket(ofgroup, new_ofgroup, | |
6605 | gm->command_bucket_id); | |
6606 | } | |
6607 | if (error) { | |
6608 | goto out; | |
6609 | } | |
6610 | ||
809c7548 | 6611 | /* The group creation time does not change during modification. */ |
eaf004bd AZ |
6612 | *CONST_CAST(long long int *, &(new_ofgroup->created)) = ofgroup->created; |
6613 | *CONST_CAST(long long int *, &(new_ofgroup->modified)) = time_msec(); | |
7395c052 | 6614 | |
809c7548 RW |
6615 | error = ofproto->ofproto_class->group_modify(new_ofgroup); |
6616 | if (error) { | |
6617 | goto out; | |
6618 | } | |
7395c052 | 6619 | |
809c7548 RW |
6620 | retiring = ofgroup; |
6621 | /* Replace ofgroup in ofproto's groups hash map with new_ofgroup. */ | |
6622 | hmap_remove(&ofproto->groups, &ofgroup->hmap_node); | |
6623 | hmap_insert(&ofproto->groups, &new_ofgroup->hmap_node, | |
6624 | hash_int(new_ofgroup->group_id, 0)); | |
6625 | if (ofgroup->type != new_ofgroup->type) { | |
6626 | ofproto->n_groups[ofgroup->type]--; | |
6627 | ofproto->n_groups[new_ofgroup->type]++; | |
7395c052 NZ |
6628 | } |
6629 | ||
809c7548 RW |
6630 | out: |
6631 | ofproto_group_unref(retiring); | |
7395c052 | 6632 | ovs_rwlock_unlock(&ofproto->groups_rwlock); |
7395c052 NZ |
6633 | return error; |
6634 | } | |
6635 | ||
6636 | static void | |
6637 | delete_group__(struct ofproto *ofproto, struct ofgroup *ofgroup) | |
6638 | OVS_RELEASES(ofproto->groups_rwlock) | |
6639 | { | |
276f6518 | 6640 | struct match match; |
8be00367 | 6641 | struct ofproto_flow_mod ofm; |
276f6518 SH |
6642 | |
6643 | /* Delete all flow entries containing this group in a group action */ | |
6644 | match_init_catchall(&match); | |
8be00367 JR |
6645 | flow_mod_init(&ofm.fm, &match, 0, NULL, 0, OFPFC_DELETE); |
6646 | ofm.fm.delete_reason = OFPRR_GROUP_DELETE; | |
6647 | ofm.fm.out_group = ofgroup->group_id; | |
8b792aef | 6648 | ofm.fm.table_id = OFPTT_ALL; |
8be00367 | 6649 | handle_flow_mod__(ofproto, &ofm, NULL); |
276f6518 | 6650 | |
7395c052 NZ |
6651 | hmap_remove(&ofproto->groups, &ofgroup->hmap_node); |
6652 | /* No-one can find this group any more. */ | |
6653 | ofproto->n_groups[ofgroup->type]--; | |
6654 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
809c7548 | 6655 | ofproto_group_unref(ofgroup); |
7395c052 NZ |
6656 | } |
6657 | ||
6c5b90ce | 6658 | /* Implements OFPGC11_DELETE. */ |
7395c052 NZ |
6659 | static void |
6660 | delete_group(struct ofproto *ofproto, uint32_t group_id) | |
6661 | { | |
6662 | struct ofgroup *ofgroup; | |
6663 | ||
6664 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
6665 | if (group_id == OFPG_ALL) { | |
6666 | for (;;) { | |
6667 | struct hmap_node *node = hmap_first(&ofproto->groups); | |
6668 | if (!node) { | |
6669 | break; | |
6670 | } | |
6671 | ofgroup = CONTAINER_OF(node, struct ofgroup, hmap_node); | |
6672 | delete_group__(ofproto, ofgroup); | |
6673 | /* Lock for each node separately, so that we will not jam the | |
6674 | * other threads for too long time. */ | |
6675 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
6676 | } | |
6677 | } else { | |
6678 | HMAP_FOR_EACH_IN_BUCKET (ofgroup, hmap_node, | |
6679 | hash_int(group_id, 0), &ofproto->groups) { | |
6680 | if (ofgroup->group_id == group_id) { | |
6681 | delete_group__(ofproto, ofgroup); | |
6682 | return; | |
6683 | } | |
6684 | } | |
6685 | } | |
6686 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
6687 | } | |
6688 | ||
daab0ae6 BP |
6689 | /* Delete all groups from 'ofproto'. |
6690 | * | |
6691 | * This is intended for use within an ofproto provider's 'destruct' | |
6692 | * function. */ | |
6693 | void | |
6694 | ofproto_group_delete_all(struct ofproto *ofproto) | |
6695 | { | |
6696 | delete_group(ofproto, OFPG_ALL); | |
6697 | } | |
6698 | ||
7395c052 NZ |
6699 | static enum ofperr |
6700 | handle_group_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
6701 | { | |
6702 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
6703 | struct ofputil_group_mod gm; | |
6704 | enum ofperr error; | |
6705 | ||
6706 | error = reject_slave_controller(ofconn); | |
6707 | if (error) { | |
6708 | return error; | |
6709 | } | |
6710 | ||
6711 | error = ofputil_decode_group_mod(oh, &gm); | |
6712 | if (error) { | |
6713 | return error; | |
6714 | } | |
6715 | ||
6716 | switch (gm.command) { | |
6717 | case OFPGC11_ADD: | |
3c35db62 NR |
6718 | error = add_group(ofproto, &gm); |
6719 | break; | |
7395c052 NZ |
6720 | |
6721 | case OFPGC11_MODIFY: | |
3c35db62 NR |
6722 | error = modify_group(ofproto, &gm); |
6723 | break; | |
7395c052 NZ |
6724 | |
6725 | case OFPGC11_DELETE: | |
6726 | delete_group(ofproto, gm.group_id); | |
3c35db62 NR |
6727 | error = 0; |
6728 | break; | |
7395c052 | 6729 | |
fce4730c | 6730 | case OFPGC15_INSERT_BUCKET: |
3c35db62 NR |
6731 | error = modify_group(ofproto, &gm); |
6732 | break; | |
fce4730c SH |
6733 | |
6734 | case OFPGC15_REMOVE_BUCKET: | |
3c35db62 NR |
6735 | error = modify_group(ofproto, &gm); |
6736 | break; | |
fce4730c | 6737 | |
7395c052 NZ |
6738 | default: |
6739 | if (gm.command > OFPGC11_DELETE) { | |
d2873d53 | 6740 | VLOG_INFO_RL(&rl, "%s: Invalid group_mod command type %d", |
7395c052 NZ |
6741 | ofproto->name, gm.command); |
6742 | } | |
63eded98 | 6743 | error = OFPERR_OFPGMFC_BAD_COMMAND; |
7395c052 | 6744 | } |
3c35db62 NR |
6745 | |
6746 | if (!error) { | |
6747 | struct ofputil_requestforward rf; | |
6748 | rf.xid = oh->xid; | |
6749 | rf.reason = OFPRFR_GROUP_MOD; | |
6750 | rf.group_mod = &gm; | |
6751 | connmgr_send_requestforward(ofproto->connmgr, ofconn, &rf); | |
6752 | } | |
63eded98 BP |
6753 | ofputil_bucket_list_destroy(&gm.buckets); |
6754 | ||
3c35db62 | 6755 | return error; |
7395c052 NZ |
6756 | } |
6757 | ||
3c1bb396 BP |
6758 | enum ofputil_table_miss |
6759 | ofproto_table_get_miss_config(const struct ofproto *ofproto, uint8_t table_id) | |
6d328fa2 | 6760 | { |
82c22d34 BP |
6761 | enum ofputil_table_miss miss; |
6762 | ||
6763 | atomic_read_relaxed(&ofproto->tables[table_id].miss_config, &miss); | |
6764 | return miss; | |
6765 | } | |
6766 | ||
6767 | static void | |
6768 | table_mod__(struct oftable *oftable, | |
de7d3c07 | 6769 | const struct ofputil_table_mod *tm) |
82c22d34 | 6770 | { |
de7d3c07 | 6771 | if (tm->miss == OFPUTIL_TABLE_MISS_DEFAULT) { |
82c22d34 BP |
6772 | /* This is how an OFPT_TABLE_MOD decodes if it doesn't specify any |
6773 | * table-miss configuration (because the protocol used doesn't have | |
6774 | * such a concept), so there's nothing to do. */ | |
6775 | } else { | |
de7d3c07 | 6776 | atomic_store_relaxed(&oftable->miss_config, tm->miss); |
82c22d34 BP |
6777 | } |
6778 | ||
6779 | unsigned int new_eviction = oftable->eviction; | |
de7d3c07 | 6780 | if (tm->eviction == OFPUTIL_TABLE_EVICTION_ON) { |
82c22d34 | 6781 | new_eviction |= EVICTION_OPENFLOW; |
de7d3c07 | 6782 | } else if (tm->eviction == OFPUTIL_TABLE_EVICTION_OFF) { |
82c22d34 BP |
6783 | new_eviction &= ~EVICTION_OPENFLOW; |
6784 | } | |
afcea9ea | 6785 | |
82c22d34 BP |
6786 | if (new_eviction != oftable->eviction) { |
6787 | ovs_mutex_lock(&ofproto_mutex); | |
6788 | oftable_configure_eviction(oftable, new_eviction, | |
6789 | oftable->eviction_fields, | |
6790 | oftable->n_eviction_fields); | |
6791 | ovs_mutex_unlock(&ofproto_mutex); | |
6792 | } | |
de7d3c07 SJ |
6793 | |
6794 | if (tm->vacancy != OFPUTIL_TABLE_VACANCY_DEFAULT) { | |
6795 | ovs_mutex_lock(&ofproto_mutex); | |
de7d3c07 SJ |
6796 | oftable->vacancy_down = tm->table_vacancy.vacancy_down; |
6797 | oftable->vacancy_up = tm->table_vacancy.vacancy_up; | |
6c6eedc5 SJ |
6798 | if (tm->vacancy == OFPUTIL_TABLE_VACANCY_OFF) { |
6799 | oftable->vacancy_event = 0; | |
6800 | } else if (!oftable->vacancy_event) { | |
6801 | uint8_t vacancy = oftable_vacancy(oftable); | |
6802 | oftable->vacancy_event = (vacancy < oftable->vacancy_up | |
6803 | ? OFPTR_VACANCY_UP | |
6804 | : OFPTR_VACANCY_DOWN); | |
6805 | } | |
de7d3c07 SJ |
6806 | ovs_mutex_unlock(&ofproto_mutex); |
6807 | } | |
6d328fa2 SH |
6808 | } |
6809 | ||
67761761 SH |
6810 | static enum ofperr |
6811 | table_mod(struct ofproto *ofproto, const struct ofputil_table_mod *tm) | |
6812 | { | |
3c1bb396 | 6813 | if (!check_table_id(ofproto, tm->table_id)) { |
67761761 | 6814 | return OFPERR_OFPTMFC_BAD_TABLE; |
82c22d34 BP |
6815 | } |
6816 | ||
6817 | /* Don't allow the eviction flags to be changed (except to the only fixed | |
6818 | * value that OVS supports). OF1.4 says this is normal: "The | |
6819 | * OFPTMPT_EVICTION property usually cannot be modified using a | |
6820 | * OFP_TABLE_MOD request, because the eviction mechanism is switch | |
6821 | * defined". */ | |
6822 | if (tm->eviction_flags != UINT32_MAX | |
6823 | && tm->eviction_flags != OFPROTO_EVICTION_FLAGS) { | |
6824 | return OFPERR_OFPTMFC_BAD_CONFIG; | |
6825 | } | |
6826 | ||
6827 | if (tm->table_id == OFPTT_ALL) { | |
6828 | struct oftable *oftable; | |
6829 | OFPROTO_FOR_EACH_TABLE (oftable, ofproto) { | |
6830 | if (!(oftable->flags & (OFTABLE_HIDDEN | OFTABLE_READONLY))) { | |
de7d3c07 | 6831 | table_mod__(oftable, tm); |
3c1bb396 | 6832 | } |
3c1bb396 | 6833 | } |
82c22d34 BP |
6834 | } else { |
6835 | struct oftable *oftable = &ofproto->tables[tm->table_id]; | |
6836 | if (oftable->flags & OFTABLE_READONLY) { | |
6837 | return OFPERR_OFPTMFC_EPERM; | |
6838 | } | |
de7d3c07 | 6839 | table_mod__(oftable, tm); |
67761761 | 6840 | } |
82c22d34 | 6841 | |
67761761 SH |
6842 | return 0; |
6843 | } | |
6844 | ||
918f2b82 AZ |
6845 | static enum ofperr |
6846 | handle_table_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
6847 | { | |
67761761 | 6848 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
918f2b82 AZ |
6849 | struct ofputil_table_mod tm; |
6850 | enum ofperr error; | |
6851 | ||
6852 | error = reject_slave_controller(ofconn); | |
6853 | if (error) { | |
6854 | return error; | |
6855 | } | |
6856 | ||
6857 | error = ofputil_decode_table_mod(oh, &tm); | |
6858 | if (error) { | |
6859 | return error; | |
6860 | } | |
6861 | ||
67761761 | 6862 | return table_mod(ofproto, &tm); |
918f2b82 AZ |
6863 | } |
6864 | ||
777af88d | 6865 | static enum ofperr |
8be00367 | 6866 | ofproto_flow_mod_start(struct ofproto *ofproto, struct ofproto_flow_mod *ofm) |
1f42be1c | 6867 | OVS_REQUIRES(ofproto_mutex) |
777af88d | 6868 | { |
8be00367 | 6869 | switch (ofm->fm.command) { |
1f42be1c | 6870 | case OFPFC_ADD: |
8be00367 JR |
6871 | return add_flow_start(ofproto, ofm); |
6872 | /* , &be->old_rules.stub[0], | |
6873 | &be->new_rules.stub[0]); */ | |
1f42be1c | 6874 | case OFPFC_MODIFY: |
8be00367 | 6875 | return modify_flows_start_loose(ofproto, ofm); |
1f42be1c | 6876 | case OFPFC_MODIFY_STRICT: |
8be00367 | 6877 | return modify_flow_start_strict(ofproto, ofm); |
1f42be1c | 6878 | case OFPFC_DELETE: |
8be00367 | 6879 | return delete_flows_start_loose(ofproto, ofm); |
1f42be1c JR |
6880 | |
6881 | case OFPFC_DELETE_STRICT: | |
8be00367 | 6882 | return delete_flow_start_strict(ofproto, ofm); |
1f42be1c JR |
6883 | } |
6884 | ||
6885 | return OFPERR_OFPFMFC_BAD_COMMAND; | |
6886 | } | |
6887 | ||
6888 | static void | |
8be00367 | 6889 | ofproto_flow_mod_revert(struct ofproto *ofproto, struct ofproto_flow_mod *ofm) |
1f42be1c JR |
6890 | OVS_REQUIRES(ofproto_mutex) |
6891 | { | |
8be00367 | 6892 | switch (ofm->fm.command) { |
1f42be1c | 6893 | case OFPFC_ADD: |
8be00367 | 6894 | add_flow_revert(ofproto, ofm); |
1f42be1c JR |
6895 | break; |
6896 | ||
6897 | case OFPFC_MODIFY: | |
6898 | case OFPFC_MODIFY_STRICT: | |
8be00367 | 6899 | modify_flows_revert(ofproto, ofm); |
1f42be1c JR |
6900 | break; |
6901 | ||
6902 | case OFPFC_DELETE: | |
6903 | case OFPFC_DELETE_STRICT: | |
8be00367 | 6904 | delete_flows_revert(ofproto, ofm); |
1f42be1c JR |
6905 | break; |
6906 | ||
6907 | default: | |
6908 | break; | |
6909 | } | |
6910 | } | |
6911 | ||
6912 | static void | |
8be00367 JR |
6913 | ofproto_flow_mod_finish(struct ofproto *ofproto, |
6914 | struct ofproto_flow_mod *ofm, | |
6915 | const struct flow_mod_requester *req) | |
1f42be1c JR |
6916 | OVS_REQUIRES(ofproto_mutex) |
6917 | { | |
8be00367 | 6918 | switch (ofm->fm.command) { |
1f42be1c | 6919 | case OFPFC_ADD: |
8be00367 | 6920 | add_flow_finish(ofproto, ofm, req); |
1f42be1c JR |
6921 | break; |
6922 | ||
6923 | case OFPFC_MODIFY: | |
6924 | case OFPFC_MODIFY_STRICT: | |
8be00367 | 6925 | modify_flows_finish(ofproto, ofm, req); |
1f42be1c JR |
6926 | break; |
6927 | ||
6928 | case OFPFC_DELETE: | |
6929 | case OFPFC_DELETE_STRICT: | |
8be00367 | 6930 | delete_flows_finish(ofproto, ofm, req); |
1f42be1c JR |
6931 | break; |
6932 | ||
6933 | default: | |
6934 | break; | |
6935 | } | |
6936 | } | |
6937 | ||
39c94593 JR |
6938 | /* Commit phases (all while locking ofproto_mutex): |
6939 | * | |
6940 | * 1. Begin: Gather resources and make changes visible in the next version. | |
6941 | * - Mark affected rules for removal in the next version. | |
6942 | * - Create new replacement rules, make visible in the next | |
6943 | * version. | |
6944 | * - Do not send any events or notifications. | |
6945 | * | |
6946 | * 2. Revert: Fail if any errors are found. After this point no errors are | |
6947 | * possible. No visible changes were made, so rollback is minimal (remove | |
6948 | * added invisible rules, restore visibility of rules marked for removal). | |
6949 | * | |
1c38055d JR |
6950 | * 3. Finish: Make the changes visible for lookups. Insert replacement rules to |
6951 | * the ofproto provider. Remove replaced and deleted rules from ofproto data | |
6952 | * structures, and Schedule postponed removal of deleted rules from the | |
6953 | * classifier. Send notifications, buffered packets, etc. | |
39c94593 | 6954 | */ |
1f42be1c JR |
6955 | static enum ofperr |
6956 | do_bundle_commit(struct ofconn *ofconn, uint32_t id, uint16_t flags) | |
6957 | { | |
6958 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
8be00367 | 6959 | cls_version_t version = ofproto->tables_version + 1; |
1f42be1c JR |
6960 | struct ofp_bundle *bundle; |
6961 | struct ofp_bundle_entry *be; | |
777af88d | 6962 | enum ofperr error; |
1f42be1c JR |
6963 | |
6964 | bundle = ofconn_get_bundle(ofconn, id); | |
6965 | ||
6966 | if (!bundle) { | |
6967 | return OFPERR_OFPBFC_BAD_ID; | |
6968 | } | |
6969 | if (bundle->flags != flags) { | |
6970 | error = OFPERR_OFPBFC_BAD_FLAGS; | |
6971 | } else { | |
1c38055d JR |
6972 | bool prev_is_port_mod = false; |
6973 | ||
1f42be1c JR |
6974 | error = 0; |
6975 | ovs_mutex_lock(&ofproto_mutex); | |
39c94593 JR |
6976 | |
6977 | /* 1. Begin. */ | |
1f42be1c JR |
6978 | LIST_FOR_EACH (be, node, &bundle->msg_list) { |
6979 | if (be->type == OFPTYPE_PORT_MOD) { | |
1c38055d JR |
6980 | /* Our port mods are not atomic. */ |
6981 | if (flags & OFPBF_ATOMIC) { | |
6982 | error = OFPERR_OFPBFC_MSG_FAILED; | |
6983 | } else { | |
6984 | prev_is_port_mod = true; | |
8be00367 | 6985 | error = port_mod_start(ofconn, &be->opm.pm, &be->opm.port); |
1c38055d | 6986 | } |
1f42be1c | 6987 | } else if (be->type == OFPTYPE_FLOW_MOD) { |
1c38055d JR |
6988 | /* Flow mods between port mods are applied as a single |
6989 | * version, but the versions are published only after | |
6990 | * we know the commit is successful. */ | |
6991 | if (prev_is_port_mod) { | |
8be00367 | 6992 | ++version; |
1c38055d JR |
6993 | } |
6994 | prev_is_port_mod = false; | |
8be00367 JR |
6995 | /* Store the version in which the changes should take |
6996 | * effect. */ | |
6997 | be->ofm.version = version; | |
6998 | error = ofproto_flow_mod_start(ofproto, &be->ofm); | |
1f42be1c JR |
6999 | } else { |
7000 | OVS_NOT_REACHED(); | |
7001 | } | |
7002 | if (error) { | |
7003 | break; | |
7004 | } | |
7005 | } | |
1c38055d | 7006 | |
1f42be1c JR |
7007 | if (error) { |
7008 | /* Send error referring to the original message. */ | |
7009 | if (error) { | |
7010 | ofconn_send_error(ofconn, be->ofp_msg, error); | |
7011 | error = OFPERR_OFPBFC_MSG_FAILED; | |
7012 | } | |
7013 | ||
39c94593 | 7014 | /* 2. Revert. Undo all the changes made above. */ |
1f42be1c JR |
7015 | LIST_FOR_EACH_REVERSE_CONTINUE(be, node, &bundle->msg_list) { |
7016 | if (be->type == OFPTYPE_FLOW_MOD) { | |
8be00367 | 7017 | ofproto_flow_mod_revert(ofproto, &be->ofm); |
1f42be1c | 7018 | } |
1c38055d | 7019 | /* Nothing needs to be reverted for a port mod. */ |
1f42be1c JR |
7020 | } |
7021 | } else { | |
39c94593 | 7022 | /* 4. Finish. */ |
1f42be1c JR |
7023 | LIST_FOR_EACH (be, node, &bundle->msg_list) { |
7024 | if (be->type == OFPTYPE_FLOW_MOD) { | |
7025 | struct flow_mod_requester req = { ofconn, be->ofp_msg }; | |
7026 | ||
8be00367 JR |
7027 | /* Bump the lookup version to the one of the current |
7028 | * message. This makes all the changes in the bundle at | |
7029 | * this version visible to lookups at once. */ | |
7030 | if (ofproto->tables_version < be->ofm.version) { | |
7031 | ofproto->tables_version = be->ofm.version; | |
7032 | ofproto->ofproto_class->set_tables_version( | |
7033 | ofproto, ofproto->tables_version); | |
7034 | } | |
7035 | ||
7036 | ofproto_flow_mod_finish(ofproto, &be->ofm, &req); | |
1c38055d JR |
7037 | } else if (be->type == OFPTYPE_PORT_MOD) { |
7038 | /* Perform the actual port mod. This is not atomic, i.e., | |
7039 | * the effects will be immediately seen by upcall | |
7040 | * processing regardless of the lookup version. It should | |
7041 | * be noted that port configuration changes can originate | |
7042 | * also from OVSDB changes asynchronously to all upcall | |
7043 | * processing. */ | |
8be00367 | 7044 | port_mod_finish(ofconn, &be->opm.pm, be->opm.port); |
1f42be1c JR |
7045 | } |
7046 | } | |
7047 | } | |
1c38055d | 7048 | |
1f42be1c JR |
7049 | ofmonitor_flush(ofproto->connmgr); |
7050 | ovs_mutex_unlock(&ofproto_mutex); | |
7051 | ||
7052 | run_rule_executes(ofproto); | |
7053 | } | |
7054 | ||
7055 | /* The bundle is discarded regardless the outcome. */ | |
7056 | ofp_bundle_remove__(ofconn, bundle, !error); | |
7057 | return error; | |
7058 | } | |
7059 | ||
7060 | static enum ofperr | |
7061 | handle_bundle_control(struct ofconn *ofconn, const struct ofp_header *oh) | |
7062 | { | |
777af88d | 7063 | struct ofputil_bundle_ctrl_msg bctrl; |
777af88d | 7064 | struct ofputil_bundle_ctrl_msg reply; |
1f42be1c JR |
7065 | struct ofpbuf *buf; |
7066 | enum ofperr error; | |
777af88d | 7067 | |
ba9d374a JR |
7068 | error = reject_slave_controller(ofconn); |
7069 | if (error) { | |
7070 | return error; | |
7071 | } | |
7072 | ||
777af88d AC |
7073 | error = ofputil_decode_bundle_ctrl(oh, &bctrl); |
7074 | if (error) { | |
7075 | return error; | |
7076 | } | |
7077 | reply.flags = 0; | |
7078 | reply.bundle_id = bctrl.bundle_id; | |
7079 | ||
7080 | switch (bctrl.type) { | |
7081 | case OFPBCT_OPEN_REQUEST: | |
7082 | error = ofp_bundle_open(ofconn, bctrl.bundle_id, bctrl.flags); | |
7083 | reply.type = OFPBCT_OPEN_REPLY; | |
7084 | break; | |
7085 | case OFPBCT_CLOSE_REQUEST: | |
7086 | error = ofp_bundle_close(ofconn, bctrl.bundle_id, bctrl.flags); | |
ea53e3a8 | 7087 | reply.type = OFPBCT_CLOSE_REPLY; |
777af88d AC |
7088 | break; |
7089 | case OFPBCT_COMMIT_REQUEST: | |
1f42be1c | 7090 | error = do_bundle_commit(ofconn, bctrl.bundle_id, bctrl.flags); |
777af88d AC |
7091 | reply.type = OFPBCT_COMMIT_REPLY; |
7092 | break; | |
7093 | case OFPBCT_DISCARD_REQUEST: | |
7094 | error = ofp_bundle_discard(ofconn, bctrl.bundle_id); | |
7095 | reply.type = OFPBCT_DISCARD_REPLY; | |
7096 | break; | |
7097 | ||
7098 | case OFPBCT_OPEN_REPLY: | |
7099 | case OFPBCT_CLOSE_REPLY: | |
7100 | case OFPBCT_COMMIT_REPLY: | |
7101 | case OFPBCT_DISCARD_REPLY: | |
7102 | return OFPERR_OFPBFC_BAD_TYPE; | |
7103 | break; | |
7104 | } | |
7105 | ||
7106 | if (!error) { | |
7107 | buf = ofputil_encode_bundle_ctrl_reply(oh, &reply); | |
7108 | ofconn_send_reply(ofconn, buf); | |
7109 | } | |
7110 | return error; | |
7111 | } | |
7112 | ||
777af88d AC |
7113 | static enum ofperr |
7114 | handle_bundle_add(struct ofconn *ofconn, const struct ofp_header *oh) | |
7115 | { | |
7ac27a04 | 7116 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
777af88d AC |
7117 | enum ofperr error; |
7118 | struct ofputil_bundle_add_msg badd; | |
7ac27a04 JR |
7119 | struct ofp_bundle_entry *bmsg; |
7120 | enum ofptype type; | |
777af88d | 7121 | |
ba9d374a JR |
7122 | error = reject_slave_controller(ofconn); |
7123 | if (error) { | |
7124 | return error; | |
7125 | } | |
7126 | ||
7ac27a04 | 7127 | error = ofputil_decode_bundle_add(oh, &badd, &type); |
777af88d AC |
7128 | if (error) { |
7129 | return error; | |
7130 | } | |
7131 | ||
1f42be1c | 7132 | bmsg = ofp_bundle_entry_alloc(type, badd.msg); |
7ac27a04 JR |
7133 | |
7134 | if (type == OFPTYPE_PORT_MOD) { | |
8be00367 | 7135 | error = ofputil_decode_port_mod(badd.msg, &bmsg->opm.pm, false); |
7ac27a04 JR |
7136 | } else if (type == OFPTYPE_FLOW_MOD) { |
7137 | struct ofpbuf ofpacts; | |
7138 | uint64_t ofpacts_stub[1024 / 8]; | |
7139 | ||
7140 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); | |
8be00367 | 7141 | error = ofputil_decode_flow_mod(&bmsg->ofm.fm, badd.msg, |
7ac27a04 JR |
7142 | ofconn_get_protocol(ofconn), |
7143 | &ofpacts, | |
7144 | u16_to_ofp(ofproto->max_ports), | |
7145 | ofproto->n_tables); | |
7146 | /* Move actions to heap. */ | |
8be00367 | 7147 | bmsg->ofm.fm.ofpacts = ofpbuf_steal_data(&ofpacts); |
7ac27a04 | 7148 | |
8be00367 JR |
7149 | if (!error && bmsg->ofm.fm.ofpacts_len) { |
7150 | error = ofproto_check_ofpacts(ofproto, bmsg->ofm.fm.ofpacts, | |
7151 | bmsg->ofm.fm.ofpacts_len); | |
7ac27a04 JR |
7152 | } |
7153 | } else { | |
7154 | OVS_NOT_REACHED(); | |
7155 | } | |
7156 | ||
7157 | if (!error) { | |
7158 | error = ofp_bundle_add_message(ofconn, badd.bundle_id, badd.flags, | |
7159 | bmsg); | |
7160 | } | |
7161 | ||
7162 | if (error) { | |
7163 | ofp_bundle_entry_free(bmsg); | |
7164 | } | |
7165 | ||
7166 | return error; | |
777af88d AC |
7167 | } |
7168 | ||
6159c531 | 7169 | static enum ofperr |
4e548ad9 | 7170 | handle_tlv_table_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
6159c531 | 7171 | { |
4e548ad9 | 7172 | struct ofputil_tlv_table_mod ttm; |
6159c531 JG |
7173 | enum ofperr error; |
7174 | ||
7175 | error = reject_slave_controller(ofconn); | |
7176 | if (error) { | |
7177 | return error; | |
7178 | } | |
7179 | ||
4e548ad9 | 7180 | error = ofputil_decode_tlv_table_mod(oh, &ttm); |
6159c531 JG |
7181 | if (error) { |
7182 | return error; | |
7183 | } | |
7184 | ||
4e548ad9 | 7185 | error = tun_metadata_table_mod(&ttm); |
9558d2a5 | 7186 | |
4e548ad9 | 7187 | ofputil_uninit_tlv_table(&ttm.mappings); |
9558d2a5 | 7188 | return error; |
6159c531 JG |
7189 | } |
7190 | ||
7191 | static enum ofperr | |
4e548ad9 | 7192 | handle_tlv_table_request(struct ofconn *ofconn, const struct ofp_header *oh) |
6159c531 | 7193 | { |
4e548ad9 | 7194 | struct ofputil_tlv_table_reply ttr; |
9558d2a5 JG |
7195 | struct ofpbuf *b; |
7196 | ||
4e548ad9 ML |
7197 | tun_metadata_table_request(&ttr); |
7198 | b = ofputil_encode_tlv_table_reply(oh, &ttr); | |
7199 | ofputil_uninit_tlv_table(&ttr.mappings); | |
9558d2a5 JG |
7200 | |
7201 | ofconn_send_reply(ofconn, b); | |
7202 | return 0; | |
6159c531 JG |
7203 | } |
7204 | ||
90bf1e07 | 7205 | static enum ofperr |
d1e2cf21 | 7206 | handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg) |
15aaf599 | 7207 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 7208 | { |
6fd6ed71 | 7209 | const struct ofp_header *oh = msg->data; |
982697a4 | 7210 | enum ofptype type; |
90bf1e07 | 7211 | enum ofperr error; |
064af421 | 7212 | |
982697a4 | 7213 | error = ofptype_decode(&type, oh); |
d1e2cf21 BP |
7214 | if (error) { |
7215 | return error; | |
7216 | } | |
ff3c2c63 YT |
7217 | if (oh->version >= OFP13_VERSION && ofpmsg_is_stat_request(oh) |
7218 | && ofpmp_more(oh)) { | |
7219 | /* We have no buffer implementation for multipart requests. | |
7220 | * Report overflow for requests which consists of multiple | |
7221 | * messages. */ | |
7222 | return OFPERR_OFPBRC_MULTIPART_BUFFER_OVERFLOW; | |
7223 | } | |
064af421 | 7224 | |
982697a4 | 7225 | switch (type) { |
d1e2cf21 | 7226 | /* OpenFlow requests. */ |
982697a4 | 7227 | case OFPTYPE_ECHO_REQUEST: |
d1e2cf21 | 7228 | return handle_echo_request(ofconn, oh); |
064af421 | 7229 | |
982697a4 | 7230 | case OFPTYPE_FEATURES_REQUEST: |
d1e2cf21 | 7231 | return handle_features_request(ofconn, oh); |
064af421 | 7232 | |
982697a4 | 7233 | case OFPTYPE_GET_CONFIG_REQUEST: |
d1e2cf21 | 7234 | return handle_get_config_request(ofconn, oh); |
064af421 | 7235 | |
982697a4 BP |
7236 | case OFPTYPE_SET_CONFIG: |
7237 | return handle_set_config(ofconn, oh); | |
064af421 | 7238 | |
982697a4 BP |
7239 | case OFPTYPE_PACKET_OUT: |
7240 | return handle_packet_out(ofconn, oh); | |
064af421 | 7241 | |
982697a4 | 7242 | case OFPTYPE_PORT_MOD: |
d1e2cf21 | 7243 | return handle_port_mod(ofconn, oh); |
064af421 | 7244 | |
982697a4 | 7245 | case OFPTYPE_FLOW_MOD: |
2e4f5fcf | 7246 | return handle_flow_mod(ofconn, oh); |
064af421 | 7247 | |
7395c052 NZ |
7248 | case OFPTYPE_GROUP_MOD: |
7249 | return handle_group_mod(ofconn, oh); | |
7250 | ||
918f2b82 AZ |
7251 | case OFPTYPE_TABLE_MOD: |
7252 | return handle_table_mod(ofconn, oh); | |
7253 | ||
9cae45dc JR |
7254 | case OFPTYPE_METER_MOD: |
7255 | return handle_meter_mod(ofconn, oh); | |
7256 | ||
982697a4 | 7257 | case OFPTYPE_BARRIER_REQUEST: |
d1e2cf21 | 7258 | return handle_barrier_request(ofconn, oh); |
064af421 | 7259 | |
6ea4776b JR |
7260 | case OFPTYPE_ROLE_REQUEST: |
7261 | return handle_role_request(ofconn, oh); | |
7262 | ||
d1e2cf21 | 7263 | /* OpenFlow replies. */ |
982697a4 | 7264 | case OFPTYPE_ECHO_REPLY: |
d1e2cf21 | 7265 | return 0; |
246e61ea | 7266 | |
d1e2cf21 | 7267 | /* Nicira extension requests. */ |
982697a4 | 7268 | case OFPTYPE_FLOW_MOD_TABLE_ID: |
6c1491fb | 7269 | return handle_nxt_flow_mod_table_id(ofconn, oh); |
d1e2cf21 | 7270 | |
982697a4 | 7271 | case OFPTYPE_SET_FLOW_FORMAT: |
d1e2cf21 BP |
7272 | return handle_nxt_set_flow_format(ofconn, oh); |
7273 | ||
982697a4 | 7274 | case OFPTYPE_SET_PACKET_IN_FORMAT: |
54834960 EJ |
7275 | return handle_nxt_set_packet_in_format(ofconn, oh); |
7276 | ||
982697a4 | 7277 | case OFPTYPE_SET_CONTROLLER_ID: |
a7349929 BP |
7278 | return handle_nxt_set_controller_id(ofconn, oh); |
7279 | ||
982697a4 | 7280 | case OFPTYPE_FLOW_AGE: |
f27f2134 BP |
7281 | /* Nothing to do. */ |
7282 | return 0; | |
7283 | ||
982697a4 | 7284 | case OFPTYPE_FLOW_MONITOR_CANCEL: |
2b07c8b1 BP |
7285 | return handle_flow_monitor_cancel(ofconn, oh); |
7286 | ||
982697a4 | 7287 | case OFPTYPE_SET_ASYNC_CONFIG: |
80d5aefd BP |
7288 | return handle_nxt_set_async_config(ofconn, oh); |
7289 | ||
c423b3b3 AC |
7290 | case OFPTYPE_GET_ASYNC_REQUEST: |
7291 | return handle_nxt_get_async_request(ofconn, oh); | |
7292 | ||
77ab5fd2 BP |
7293 | case OFPTYPE_NXT_RESUME: |
7294 | return handle_nxt_resume(ofconn, oh); | |
7295 | ||
349adfb2 | 7296 | /* Statistics requests. */ |
982697a4 BP |
7297 | case OFPTYPE_DESC_STATS_REQUEST: |
7298 | return handle_desc_stats_request(ofconn, oh); | |
7299 | ||
7300 | case OFPTYPE_FLOW_STATS_REQUEST: | |
7301 | return handle_flow_stats_request(ofconn, oh); | |
7302 | ||
7303 | case OFPTYPE_AGGREGATE_STATS_REQUEST: | |
7304 | return handle_aggregate_stats_request(ofconn, oh); | |
7305 | ||
7306 | case OFPTYPE_TABLE_STATS_REQUEST: | |
7307 | return handle_table_stats_request(ofconn, oh); | |
7308 | ||
3c4e10fb BP |
7309 | case OFPTYPE_TABLE_FEATURES_STATS_REQUEST: |
7310 | return handle_table_features_request(ofconn, oh); | |
7311 | ||
03c72922 BP |
7312 | case OFPTYPE_TABLE_DESC_REQUEST: |
7313 | return handle_table_desc_request(ofconn, oh); | |
7314 | ||
982697a4 BP |
7315 | case OFPTYPE_PORT_STATS_REQUEST: |
7316 | return handle_port_stats_request(ofconn, oh); | |
7317 | ||
7318 | case OFPTYPE_QUEUE_STATS_REQUEST: | |
7319 | return handle_queue_stats_request(ofconn, oh); | |
7320 | ||
7321 | case OFPTYPE_PORT_DESC_STATS_REQUEST: | |
7322 | return handle_port_desc_stats_request(ofconn, oh); | |
7323 | ||
7324 | case OFPTYPE_FLOW_MONITOR_STATS_REQUEST: | |
7325 | return handle_flow_monitor_request(ofconn, oh); | |
7326 | ||
261bd854 BP |
7327 | case OFPTYPE_METER_STATS_REQUEST: |
7328 | case OFPTYPE_METER_CONFIG_STATS_REQUEST: | |
9cae45dc JR |
7329 | return handle_meter_request(ofconn, oh, type); |
7330 | ||
261bd854 | 7331 | case OFPTYPE_METER_FEATURES_STATS_REQUEST: |
9cae45dc JR |
7332 | return handle_meter_features_request(ofconn, oh); |
7333 | ||
261bd854 | 7334 | case OFPTYPE_GROUP_STATS_REQUEST: |
7395c052 NZ |
7335 | return handle_group_stats_request(ofconn, oh); |
7336 | ||
261bd854 | 7337 | case OFPTYPE_GROUP_DESC_STATS_REQUEST: |
7395c052 NZ |
7338 | return handle_group_desc_stats_request(ofconn, oh); |
7339 | ||
261bd854 | 7340 | case OFPTYPE_GROUP_FEATURES_STATS_REQUEST: |
7395c052 NZ |
7341 | return handle_group_features_stats_request(ofconn, oh); |
7342 | ||
7395c052 | 7343 | case OFPTYPE_QUEUE_GET_CONFIG_REQUEST: |
e8f9a7bb | 7344 | return handle_queue_get_config_request(ofconn, oh); |
2e1ae200 | 7345 | |
777af88d AC |
7346 | case OFPTYPE_BUNDLE_CONTROL: |
7347 | return handle_bundle_control(ofconn, oh); | |
7348 | ||
7349 | case OFPTYPE_BUNDLE_ADD_MESSAGE: | |
7350 | return handle_bundle_add(ofconn, oh); | |
7351 | ||
4e548ad9 ML |
7352 | case OFPTYPE_NXT_TLV_TABLE_MOD: |
7353 | return handle_tlv_table_mod(ofconn, oh); | |
6159c531 | 7354 | |
4e548ad9 ML |
7355 | case OFPTYPE_NXT_TLV_TABLE_REQUEST: |
7356 | return handle_tlv_table_request(ofconn, oh); | |
6159c531 | 7357 | |
982697a4 BP |
7358 | case OFPTYPE_HELLO: |
7359 | case OFPTYPE_ERROR: | |
7360 | case OFPTYPE_FEATURES_REPLY: | |
7361 | case OFPTYPE_GET_CONFIG_REPLY: | |
7362 | case OFPTYPE_PACKET_IN: | |
7363 | case OFPTYPE_FLOW_REMOVED: | |
7364 | case OFPTYPE_PORT_STATUS: | |
7365 | case OFPTYPE_BARRIER_REPLY: | |
c545d38d | 7366 | case OFPTYPE_QUEUE_GET_CONFIG_REPLY: |
982697a4 BP |
7367 | case OFPTYPE_DESC_STATS_REPLY: |
7368 | case OFPTYPE_FLOW_STATS_REPLY: | |
7369 | case OFPTYPE_QUEUE_STATS_REPLY: | |
7370 | case OFPTYPE_PORT_STATS_REPLY: | |
7371 | case OFPTYPE_TABLE_STATS_REPLY: | |
7372 | case OFPTYPE_AGGREGATE_STATS_REPLY: | |
7373 | case OFPTYPE_PORT_DESC_STATS_REPLY: | |
7374 | case OFPTYPE_ROLE_REPLY: | |
7375 | case OFPTYPE_FLOW_MONITOR_PAUSED: | |
7376 | case OFPTYPE_FLOW_MONITOR_RESUMED: | |
7377 | case OFPTYPE_FLOW_MONITOR_STATS_REPLY: | |
2e1ae200 | 7378 | case OFPTYPE_GET_ASYNC_REPLY: |
261bd854 BP |
7379 | case OFPTYPE_GROUP_STATS_REPLY: |
7380 | case OFPTYPE_GROUP_DESC_STATS_REPLY: | |
7381 | case OFPTYPE_GROUP_FEATURES_STATS_REPLY: | |
7382 | case OFPTYPE_METER_STATS_REPLY: | |
7383 | case OFPTYPE_METER_CONFIG_STATS_REPLY: | |
7384 | case OFPTYPE_METER_FEATURES_STATS_REPLY: | |
7385 | case OFPTYPE_TABLE_FEATURES_STATS_REPLY: | |
03c72922 | 7386 | case OFPTYPE_TABLE_DESC_REPLY: |
252f3411 | 7387 | case OFPTYPE_ROLE_STATUS: |
3c35db62 | 7388 | case OFPTYPE_REQUESTFORWARD: |
6c6eedc5 | 7389 | case OFPTYPE_TABLE_STATUS: |
4e548ad9 | 7390 | case OFPTYPE_NXT_TLV_TABLE_REPLY: |
064af421 | 7391 | default: |
76ec08e0 YT |
7392 | if (ofpmsg_is_stat_request(oh)) { |
7393 | return OFPERR_OFPBRC_BAD_STAT; | |
7394 | } else { | |
7395 | return OFPERR_OFPBRC_BAD_TYPE; | |
7396 | } | |
064af421 | 7397 | } |
d1e2cf21 | 7398 | } |
064af421 | 7399 | |
b20f4073 | 7400 | static void |
e03248b7 | 7401 | handle_openflow(struct ofconn *ofconn, const struct ofpbuf *ofp_msg) |
15aaf599 | 7402 | OVS_EXCLUDED(ofproto_mutex) |
d1e2cf21 | 7403 | { |
d51c8b71 JR |
7404 | enum ofperr error = handle_openflow__(ofconn, ofp_msg); |
7405 | ||
b20f4073 | 7406 | if (error) { |
6fd6ed71 | 7407 | ofconn_send_error(ofconn, ofp_msg->data, error); |
064af421 | 7408 | } |
d1e2cf21 | 7409 | COVERAGE_INC(ofproto_recv_openflow); |
7ee20df1 BP |
7410 | } |
7411 | \f | |
7412 | /* Asynchronous operations. */ | |
7413 | ||
c84d8691 JR |
7414 | static void |
7415 | send_buffered_packet(const struct flow_mod_requester *req, uint32_t buffer_id, | |
834fe5cb | 7416 | struct rule *rule) |
15aaf599 | 7417 | OVS_REQUIRES(ofproto_mutex) |
7ee20df1 | 7418 | { |
c84d8691 JR |
7419 | if (req && req->ofconn && buffer_id != UINT32_MAX) { |
7420 | struct ofproto *ofproto = ofconn_get_ofproto(req->ofconn); | |
cf62fa4c | 7421 | struct dp_packet *packet; |
834fe5cb | 7422 | ofp_port_t in_port; |
c84d8691 | 7423 | enum ofperr error; |
b277c7cc | 7424 | |
c84d8691 JR |
7425 | error = ofconn_pktbuf_retrieve(req->ofconn, buffer_id, &packet, |
7426 | &in_port); | |
834fe5cb BP |
7427 | if (packet) { |
7428 | struct rule_execute *re; | |
b277c7cc | 7429 | |
834fe5cb | 7430 | ofproto_rule_ref(rule); |
b277c7cc | 7431 | |
834fe5cb BP |
7432 | re = xmalloc(sizeof *re); |
7433 | re->rule = rule; | |
7434 | re->in_port = in_port; | |
7435 | re->packet = packet; | |
b277c7cc | 7436 | |
834fe5cb BP |
7437 | if (!guarded_list_push_back(&ofproto->rule_executes, |
7438 | &re->list_node, 1024)) { | |
a2143702 | 7439 | ofproto_rule_unref(rule); |
cf62fa4c | 7440 | dp_packet_delete(re->packet); |
834fe5cb | 7441 | free(re); |
e615b0a3 | 7442 | } |
c84d8691 JR |
7443 | } else { |
7444 | ofconn_send_error(req->ofconn, req->request, error); | |
af822017 | 7445 | } |
7ee20df1 | 7446 | } |
7ee20df1 | 7447 | } |
064af421 | 7448 | \f |
064af421 | 7449 | static uint64_t |
fa60c019 | 7450 | pick_datapath_id(const struct ofproto *ofproto) |
064af421 | 7451 | { |
fa60c019 | 7452 | const struct ofport *port; |
064af421 | 7453 | |
abe529af | 7454 | port = ofproto_get_port(ofproto, OFPP_LOCAL); |
fa60c019 | 7455 | if (port) { |
74ff3298 | 7456 | struct eth_addr ea; |
fa60c019 BP |
7457 | int error; |
7458 | ||
74ff3298 | 7459 | error = netdev_get_etheraddr(port->netdev, &ea); |
064af421 BP |
7460 | if (!error) { |
7461 | return eth_addr_to_uint64(ea); | |
7462 | } | |
fbfa2911 BP |
7463 | VLOG_WARN("%s: could not get MAC address for %s (%s)", |
7464 | ofproto->name, netdev_get_name(port->netdev), | |
10a89ef0 | 7465 | ovs_strerror(error)); |
064af421 | 7466 | } |
fa60c019 | 7467 | return ofproto->fallback_dpid; |
064af421 BP |
7468 | } |
7469 | ||
7470 | static uint64_t | |
7471 | pick_fallback_dpid(void) | |
7472 | { | |
74ff3298 JR |
7473 | struct eth_addr ea; |
7474 | eth_addr_nicira_random(&ea); | |
064af421 BP |
7475 | return eth_addr_to_uint64(ea); |
7476 | } | |
7477 | \f | |
254750ce BP |
7478 | /* Table overflow policy. */ |
7479 | ||
ad3efdcb EJ |
7480 | /* Chooses and updates 'rulep' with a rule to evict from 'table'. Sets 'rulep' |
7481 | * to NULL if the table is not configured to evict rules or if the table | |
7482 | * contains no evictable rules. (Rules with a readlock on their evict rwlock, | |
7483 | * or with no timeouts are not evictable.) */ | |
7484 | static bool | |
7485 | choose_rule_to_evict(struct oftable *table, struct rule **rulep) | |
15aaf599 | 7486 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
7487 | { |
7488 | struct eviction_group *evg; | |
7489 | ||
ad3efdcb | 7490 | *rulep = NULL; |
82c22d34 | 7491 | if (!table->eviction) { |
ad3efdcb | 7492 | return false; |
254750ce BP |
7493 | } |
7494 | ||
7495 | /* In the common case, the outer and inner loops here will each be entered | |
7496 | * exactly once: | |
7497 | * | |
7498 | * - The inner loop normally "return"s in its first iteration. If the | |
7499 | * eviction group has any evictable rules, then it always returns in | |
7500 | * some iteration. | |
7501 | * | |
7502 | * - The outer loop only iterates more than once if the largest eviction | |
7503 | * group has no evictable rules. | |
7504 | * | |
7505 | * - The outer loop can exit only if table's 'max_flows' is all filled up | |
afe2143d | 7506 | * by unevictable rules. */ |
254750ce BP |
7507 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { |
7508 | struct rule *rule; | |
7509 | ||
7510 | HEAP_FOR_EACH (rule, evg_node, &evg->rules) { | |
15aaf599 BP |
7511 | *rulep = rule; |
7512 | return true; | |
254750ce BP |
7513 | } |
7514 | } | |
7515 | ||
ad3efdcb | 7516 | return false; |
254750ce | 7517 | } |
254750ce BP |
7518 | \f |
7519 | /* Eviction groups. */ | |
7520 | ||
7521 | /* Returns the priority to use for an eviction_group that contains 'n_rules' | |
7522 | * rules. The priority contains low-order random bits to ensure that eviction | |
7523 | * groups with the same number of rules are prioritized randomly. */ | |
7524 | static uint32_t | |
7525 | eviction_group_priority(size_t n_rules) | |
7526 | { | |
7527 | uint16_t size = MIN(UINT16_MAX, n_rules); | |
7528 | return (size << 16) | random_uint16(); | |
7529 | } | |
7530 | ||
7531 | /* Updates 'evg', an eviction_group within 'table', following a change that | |
7532 | * adds or removes rules in 'evg'. */ | |
7533 | static void | |
7534 | eviction_group_resized(struct oftable *table, struct eviction_group *evg) | |
15aaf599 | 7535 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
7536 | { |
7537 | heap_change(&table->eviction_groups_by_size, &evg->size_node, | |
7538 | eviction_group_priority(heap_count(&evg->rules))); | |
7539 | } | |
7540 | ||
7541 | /* Destroys 'evg', an eviction_group within 'table': | |
7542 | * | |
7543 | * - Removes all the rules, if any, from 'evg'. (It doesn't destroy the | |
7544 | * rules themselves, just removes them from the eviction group.) | |
7545 | * | |
7546 | * - Removes 'evg' from 'table'. | |
7547 | * | |
7548 | * - Frees 'evg'. */ | |
7549 | static void | |
7550 | eviction_group_destroy(struct oftable *table, struct eviction_group *evg) | |
15aaf599 | 7551 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
7552 | { |
7553 | while (!heap_is_empty(&evg->rules)) { | |
7554 | struct rule *rule; | |
7555 | ||
7556 | rule = CONTAINER_OF(heap_pop(&evg->rules), struct rule, evg_node); | |
7557 | rule->eviction_group = NULL; | |
7558 | } | |
7559 | hmap_remove(&table->eviction_groups_by_id, &evg->id_node); | |
7560 | heap_remove(&table->eviction_groups_by_size, &evg->size_node); | |
7561 | heap_destroy(&evg->rules); | |
7562 | free(evg); | |
7563 | } | |
7564 | ||
7565 | /* Removes 'rule' from its eviction group, if any. */ | |
7566 | static void | |
7567 | eviction_group_remove_rule(struct rule *rule) | |
15aaf599 | 7568 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
7569 | { |
7570 | if (rule->eviction_group) { | |
7571 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
7572 | struct eviction_group *evg = rule->eviction_group; | |
7573 | ||
7574 | rule->eviction_group = NULL; | |
7575 | heap_remove(&evg->rules, &rule->evg_node); | |
7576 | if (heap_is_empty(&evg->rules)) { | |
7577 | eviction_group_destroy(table, evg); | |
7578 | } else { | |
7579 | eviction_group_resized(table, evg); | |
7580 | } | |
7581 | } | |
7582 | } | |
7583 | ||
7584 | /* Hashes the 'rule''s values for the eviction_fields of 'rule''s table, and | |
7585 | * returns the hash value. */ | |
7586 | static uint32_t | |
7587 | eviction_group_hash_rule(struct rule *rule) | |
15aaf599 | 7588 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
7589 | { |
7590 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
7591 | const struct mf_subfield *sf; | |
5cb7a798 | 7592 | struct flow flow; |
254750ce BP |
7593 | uint32_t hash; |
7594 | ||
7595 | hash = table->eviction_group_id_basis; | |
8fd47924 | 7596 | miniflow_expand(rule->cr.match.flow, &flow); |
254750ce BP |
7597 | for (sf = table->eviction_fields; |
7598 | sf < &table->eviction_fields[table->n_eviction_fields]; | |
7599 | sf++) | |
7600 | { | |
5cb7a798 | 7601 | if (mf_are_prereqs_ok(sf->field, &flow)) { |
254750ce BP |
7602 | union mf_value value; |
7603 | ||
5cb7a798 | 7604 | mf_get_value(sf->field, &flow, &value); |
254750ce BP |
7605 | if (sf->ofs) { |
7606 | bitwise_zero(&value, sf->field->n_bytes, 0, sf->ofs); | |
7607 | } | |
7608 | if (sf->ofs + sf->n_bits < sf->field->n_bytes * 8) { | |
7609 | unsigned int start = sf->ofs + sf->n_bits; | |
7610 | bitwise_zero(&value, sf->field->n_bytes, start, | |
7611 | sf->field->n_bytes * 8 - start); | |
7612 | } | |
7613 | hash = hash_bytes(&value, sf->field->n_bytes, hash); | |
7614 | } else { | |
7615 | hash = hash_int(hash, 0); | |
7616 | } | |
7617 | } | |
7618 | ||
7619 | return hash; | |
7620 | } | |
7621 | ||
7622 | /* Returns an eviction group within 'table' with the given 'id', creating one | |
7623 | * if necessary. */ | |
7624 | static struct eviction_group * | |
7625 | eviction_group_find(struct oftable *table, uint32_t id) | |
15aaf599 | 7626 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
7627 | { |
7628 | struct eviction_group *evg; | |
7629 | ||
7630 | HMAP_FOR_EACH_WITH_HASH (evg, id_node, id, &table->eviction_groups_by_id) { | |
7631 | return evg; | |
7632 | } | |
7633 | ||
7634 | evg = xmalloc(sizeof *evg); | |
7635 | hmap_insert(&table->eviction_groups_by_id, &evg->id_node, id); | |
7636 | heap_insert(&table->eviction_groups_by_size, &evg->size_node, | |
7637 | eviction_group_priority(0)); | |
7638 | heap_init(&evg->rules); | |
7639 | ||
7640 | return evg; | |
7641 | } | |
7642 | ||
7643 | /* Returns an eviction priority for 'rule'. The return value should be | |
f70b94de BP |
7644 | * interpreted so that higher priorities make a rule a more attractive |
7645 | * candidate for eviction. */ | |
7646 | static uint64_t | |
dc437090 | 7647 | rule_eviction_priority(struct ofproto *ofproto, struct rule *rule) |
15aaf599 | 7648 | OVS_REQUIRES(ofproto_mutex) |
254750ce | 7649 | { |
f70b94de BP |
7650 | /* Calculate absolute time when this flow will expire. If it will never |
7651 | * expire, then return 0 to make it unevictable. */ | |
dc437090 | 7652 | long long int expiration = LLONG_MAX; |
dc437090 | 7653 | if (rule->hard_timeout) { |
f70b94de BP |
7654 | /* 'modified' needs protection even when we hold 'ofproto_mutex'. */ |
7655 | ovs_mutex_lock(&rule->mutex); | |
7656 | long long int modified = rule->modified; | |
7657 | ovs_mutex_unlock(&rule->mutex); | |
7658 | ||
dc437090 JR |
7659 | expiration = modified + rule->hard_timeout * 1000; |
7660 | } | |
7661 | if (rule->idle_timeout) { | |
7662 | uint64_t packets, bytes; | |
7663 | long long int used; | |
7664 | long long int idle_expiration; | |
7665 | ||
7666 | ofproto->ofproto_class->rule_get_stats(rule, &packets, &bytes, &used); | |
7667 | idle_expiration = used + rule->idle_timeout * 1000; | |
7668 | expiration = MIN(expiration, idle_expiration); | |
7669 | } | |
254750ce BP |
7670 | if (expiration == LLONG_MAX) { |
7671 | return 0; | |
7672 | } | |
7673 | ||
7674 | /* Calculate the time of expiration as a number of (approximate) seconds | |
7675 | * after program startup. | |
7676 | * | |
7677 | * This should work OK for program runs that last UINT32_MAX seconds or | |
7678 | * less. Therefore, please restart OVS at least once every 136 years. */ | |
f70b94de | 7679 | uint32_t expiration_ofs = (expiration >> 10) - (time_boot_msec() >> 10); |
254750ce | 7680 | |
f70b94de BP |
7681 | /* Combine expiration time with OpenFlow "importance" to form a single |
7682 | * priority value. We want flows with relatively low "importance" to be | |
7683 | * evicted before even considering expiration time, so put "importance" in | |
7684 | * the most significant bits and expiration time in the least significant | |
7685 | * bits. | |
7686 | * | |
7687 | * Small 'priority' should be evicted before those with large 'priority'. | |
7688 | * The caller expects the opposite convention (a large return value being | |
7689 | * more attractive for eviction) so we invert it before returning. */ | |
7690 | uint64_t priority = ((uint64_t) rule->importance << 32) + expiration_ofs; | |
7691 | return UINT64_MAX - priority; | |
254750ce BP |
7692 | } |
7693 | ||
7694 | /* Adds 'rule' to an appropriate eviction group for its oftable's | |
7695 | * configuration. Does nothing if 'rule''s oftable doesn't have eviction | |
7696 | * enabled, or if 'rule' is a permanent rule (one that will never expire on its | |
7697 | * own). | |
7698 | * | |
7699 | * The caller must ensure that 'rule' is not already in an eviction group. */ | |
7700 | static void | |
7701 | eviction_group_add_rule(struct rule *rule) | |
15aaf599 | 7702 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
7703 | { |
7704 | struct ofproto *ofproto = rule->ofproto; | |
7705 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
a3779dbc | 7706 | bool has_timeout; |
254750ce | 7707 | |
dc437090 JR |
7708 | /* Timeouts may be modified only when holding 'ofproto_mutex'. We have it |
7709 | * so no additional protection is needed. */ | |
a3779dbc | 7710 | has_timeout = rule->hard_timeout || rule->idle_timeout; |
a3779dbc | 7711 | |
82c22d34 | 7712 | if (table->eviction && has_timeout) { |
254750ce BP |
7713 | struct eviction_group *evg; |
7714 | ||
7715 | evg = eviction_group_find(table, eviction_group_hash_rule(rule)); | |
7716 | ||
7717 | rule->eviction_group = evg; | |
7718 | heap_insert(&evg->rules, &rule->evg_node, | |
dc437090 | 7719 | rule_eviction_priority(ofproto, rule)); |
254750ce BP |
7720 | eviction_group_resized(table, evg); |
7721 | } | |
7722 | } | |
7723 | \f | |
d0918789 BP |
7724 | /* oftables. */ |
7725 | ||
7726 | /* Initializes 'table'. */ | |
7727 | static void | |
7728 | oftable_init(struct oftable *table) | |
7729 | { | |
5c67e4af | 7730 | memset(table, 0, sizeof *table); |
d70e8c28 | 7731 | classifier_init(&table->cls, flow_segment_u64s); |
ec1c5c7e | 7732 | table->max_flows = UINT_MAX; |
d79e3d70 | 7733 | table->n_flows = 0; |
82c22d34 BP |
7734 | hmap_init(&table->eviction_groups_by_id); |
7735 | heap_init(&table->eviction_groups_by_size); | |
3c1bb396 | 7736 | atomic_init(&table->miss_config, OFPUTIL_TABLE_MISS_DEFAULT); |
f017d986 | 7737 | |
f017d986 JR |
7738 | classifier_set_prefix_fields(&table->cls, default_prefix_fields, |
7739 | ARRAY_SIZE(default_prefix_fields)); | |
d611866c SH |
7740 | |
7741 | atomic_init(&table->n_matched, 0); | |
7742 | atomic_init(&table->n_missed, 0); | |
d0918789 BP |
7743 | } |
7744 | ||
254750ce | 7745 | /* Destroys 'table', including its classifier and eviction groups. |
d0918789 BP |
7746 | * |
7747 | * The caller is responsible for freeing 'table' itself. */ | |
7748 | static void | |
7749 | oftable_destroy(struct oftable *table) | |
7750 | { | |
cb22974d | 7751 | ovs_assert(classifier_is_empty(&table->cls)); |
82c22d34 | 7752 | |
7394b8fb | 7753 | ovs_mutex_lock(&ofproto_mutex); |
82c22d34 | 7754 | oftable_configure_eviction(table, 0, NULL, 0); |
7394b8fb | 7755 | ovs_mutex_unlock(&ofproto_mutex); |
82c22d34 BP |
7756 | |
7757 | hmap_destroy(&table->eviction_groups_by_id); | |
7758 | heap_destroy(&table->eviction_groups_by_size); | |
d0918789 | 7759 | classifier_destroy(&table->cls); |
254750ce BP |
7760 | free(table->name); |
7761 | } | |
7762 | ||
7763 | /* Changes the name of 'table' to 'name'. If 'name' is NULL or the empty | |
7764 | * string, then 'table' will use its default name. | |
7765 | * | |
7766 | * This only affects the name exposed for a table exposed through the OpenFlow | |
7767 | * OFPST_TABLE (as printed by "ovs-ofctl dump-tables"). */ | |
7768 | static void | |
7769 | oftable_set_name(struct oftable *table, const char *name) | |
7770 | { | |
7771 | if (name && name[0]) { | |
7772 | int len = strnlen(name, OFP_MAX_TABLE_NAME_LEN); | |
7773 | if (!table->name || strncmp(name, table->name, len)) { | |
7774 | free(table->name); | |
7775 | table->name = xmemdup0(name, len); | |
7776 | } | |
7777 | } else { | |
7778 | free(table->name); | |
7779 | table->name = NULL; | |
7780 | } | |
7781 | } | |
7782 | ||
254750ce BP |
7783 | /* oftables support a choice of two policies when adding a rule would cause the |
7784 | * number of flows in the table to exceed the configured maximum number: either | |
7785 | * they can refuse to add the new flow or they can evict some existing flow. | |
7786 | * This function configures the latter policy on 'table', with fairness based | |
7787 | * on the values of the 'n_fields' fields specified in 'fields'. (Specifying | |
7788 | * 'n_fields' as 0 disables fairness.) */ | |
7789 | static void | |
82c22d34 BP |
7790 | oftable_configure_eviction(struct oftable *table, unsigned int eviction, |
7791 | const struct mf_subfield *fields, size_t n_fields) | |
15aaf599 | 7792 | OVS_REQUIRES(ofproto_mutex) |
254750ce | 7793 | { |
254750ce BP |
7794 | struct rule *rule; |
7795 | ||
82c22d34 | 7796 | if ((table->eviction != 0) == (eviction != 0) |
254750ce BP |
7797 | && n_fields == table->n_eviction_fields |
7798 | && (!n_fields | |
7799 | || !memcmp(fields, table->eviction_fields, | |
7800 | n_fields * sizeof *fields))) { | |
82c22d34 BP |
7801 | /* The set of eviction fields did not change. If 'eviction' changed, |
7802 | * it remains nonzero, so that we can just update table->eviction | |
7803 | * without fussing with the eviction groups. */ | |
7804 | table->eviction = eviction; | |
254750ce BP |
7805 | return; |
7806 | } | |
7807 | ||
82c22d34 BP |
7808 | /* Destroy existing eviction groups, then destroy and recreate data |
7809 | * structures to recover memory. */ | |
7810 | struct eviction_group *evg, *next; | |
7811 | HMAP_FOR_EACH_SAFE (evg, next, id_node, &table->eviction_groups_by_id) { | |
7812 | eviction_group_destroy(table, evg); | |
7813 | } | |
7814 | hmap_destroy(&table->eviction_groups_by_id); | |
254750ce | 7815 | hmap_init(&table->eviction_groups_by_id); |
82c22d34 | 7816 | heap_destroy(&table->eviction_groups_by_size); |
254750ce BP |
7817 | heap_init(&table->eviction_groups_by_size); |
7818 | ||
82c22d34 BP |
7819 | /* Replace eviction groups by the new ones, if there is a change. Free the |
7820 | * old fields only after allocating the new ones, because 'fields == | |
7821 | * table->eviction_fields' is possible. */ | |
7822 | struct mf_subfield *old_fields = table->eviction_fields; | |
7823 | table->n_eviction_fields = n_fields; | |
7824 | table->eviction_fields = (fields | |
7825 | ? xmemdup(fields, n_fields * sizeof *fields) | |
7826 | : NULL); | |
7827 | free(old_fields); | |
7828 | ||
7829 | /* Add the new eviction groups, if enabled. */ | |
7830 | table->eviction = eviction; | |
7831 | if (table->eviction) { | |
7832 | table->eviction_group_id_basis = random_uint32(); | |
7833 | CLS_FOR_EACH (rule, cr, &table->cls) { | |
7834 | eviction_group_add_rule(rule); | |
7835 | } | |
254750ce | 7836 | } |
d0918789 BP |
7837 | } |
7838 | ||
bc5e6a91 JR |
7839 | /* Inserts 'rule' from the ofproto data structures BEFORE caller has inserted |
7840 | * it to the classifier. */ | |
7841 | static void | |
7842 | ofproto_rule_insert__(struct ofproto *ofproto, struct rule *rule) | |
7843 | OVS_REQUIRES(ofproto_mutex) | |
7844 | { | |
7845 | const struct rule_actions *actions = rule_get_actions(rule); | |
7846 | ||
39c94593 JR |
7847 | ovs_assert(rule->removed); |
7848 | ||
bc5e6a91 | 7849 | if (rule->hard_timeout || rule->idle_timeout) { |
417e7e66 | 7850 | ovs_list_insert(&ofproto->expirable, &rule->expirable); |
bc5e6a91 JR |
7851 | } |
7852 | cookies_insert(ofproto, rule); | |
7853 | eviction_group_add_rule(rule); | |
7854 | if (actions->has_meter) { | |
7855 | meter_insert_rule(rule); | |
7856 | } | |
39c94593 | 7857 | rule->removed = false; |
bc5e6a91 JR |
7858 | } |
7859 | ||
6787a49f JR |
7860 | /* Removes 'rule' from the ofproto data structures. Caller may have deferred |
7861 | * the removal from the classifier. */ | |
d0918789 | 7862 | static void |
802f84ff | 7863 | ofproto_rule_remove__(struct ofproto *ofproto, struct rule *rule) |
15aaf599 | 7864 | OVS_REQUIRES(ofproto_mutex) |
d0918789 | 7865 | { |
39c94593 JR |
7866 | ovs_assert(!rule->removed); |
7867 | ||
98eaac36 | 7868 | cookies_remove(ofproto, rule); |
2c916028 | 7869 | |
254750ce | 7870 | eviction_group_remove_rule(rule); |
417e7e66 BW |
7871 | if (!ovs_list_is_empty(&rule->expirable)) { |
7872 | ovs_list_remove(&rule->expirable); | |
e503cc19 | 7873 | } |
417e7e66 BW |
7874 | if (!ovs_list_is_empty(&rule->meter_list_node)) { |
7875 | ovs_list_remove(&rule->meter_list_node); | |
7876 | ovs_list_init(&rule->meter_list_node); | |
9cae45dc | 7877 | } |
802f84ff | 7878 | |
39c94593 | 7879 | rule->removed = true; |
0b4f2078 | 7880 | } |
d0918789 | 7881 | \f |
abe529af | 7882 | /* unixctl commands. */ |
7aa697dd | 7883 | |
abe529af | 7884 | struct ofproto * |
2ac6bedd | 7885 | ofproto_lookup(const char *name) |
7aa697dd | 7886 | { |
2ac6bedd | 7887 | struct ofproto *ofproto; |
7aa697dd | 7888 | |
2ac6bedd BP |
7889 | HMAP_FOR_EACH_WITH_HASH (ofproto, hmap_node, hash_string(name, 0), |
7890 | &all_ofprotos) { | |
7891 | if (!strcmp(ofproto->name, name)) { | |
7892 | return ofproto; | |
7893 | } | |
7aa697dd | 7894 | } |
2ac6bedd | 7895 | return NULL; |
7aa697dd BP |
7896 | } |
7897 | ||
7898 | static void | |
0e15264f BP |
7899 | ofproto_unixctl_list(struct unixctl_conn *conn, int argc OVS_UNUSED, |
7900 | const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED) | |
7aa697dd | 7901 | { |
7aa697dd | 7902 | struct ofproto *ofproto; |
7aa697dd | 7903 | struct ds results; |
7aa697dd | 7904 | |
7aa697dd | 7905 | ds_init(&results); |
2ac6bedd BP |
7906 | HMAP_FOR_EACH (ofproto, hmap_node, &all_ofprotos) { |
7907 | ds_put_format(&results, "%s\n", ofproto->name); | |
7aa697dd | 7908 | } |
bde9f75d | 7909 | unixctl_command_reply(conn, ds_cstr(&results)); |
7aa697dd | 7910 | ds_destroy(&results); |
7aa697dd BP |
7911 | } |
7912 | ||
7913 | static void | |
7914 | ofproto_unixctl_init(void) | |
7915 | { | |
7916 | static bool registered; | |
7917 | if (registered) { | |
7918 | return; | |
7919 | } | |
7920 | registered = true; | |
7921 | ||
0e15264f BP |
7922 | unixctl_command_register("ofproto/list", "", 0, 0, |
7923 | ofproto_unixctl_list, NULL); | |
064af421 | 7924 | } |
52a90c29 BP |
7925 | \f |
7926 | /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.) | |
7927 | * | |
7928 | * This is deprecated. It is only for compatibility with broken device drivers | |
7929 | * in old versions of Linux that do not properly support VLANs when VLAN | |
7930 | * devices are not used. When broken device drivers are no longer in | |
7931 | * widespread use, we will delete these interfaces. */ | |
7932 | ||
7933 | /* Sets a 1-bit in the 4096-bit 'vlan_bitmap' for each VLAN ID that is matched | |
7934 | * (exactly) by an OpenFlow rule in 'ofproto'. */ | |
7935 | void | |
7936 | ofproto_get_vlan_usage(struct ofproto *ofproto, unsigned long int *vlan_bitmap) | |
7937 | { | |
ac4aa4c8 JR |
7938 | struct match match; |
7939 | struct cls_rule target; | |
d0918789 | 7940 | const struct oftable *oftable; |
52a90c29 | 7941 | |
ac4aa4c8 JR |
7942 | match_init_catchall(&match); |
7943 | match_set_vlan_vid_masked(&match, htons(VLAN_CFI), htons(VLAN_CFI)); | |
bd53aa17 | 7944 | cls_rule_init(&target, &match, 0); |
ac4aa4c8 | 7945 | |
52a90c29 BP |
7946 | free(ofproto->vlan_bitmap); |
7947 | ofproto->vlan_bitmap = bitmap_allocate(4096); | |
7948 | ofproto->vlans_changed = false; | |
7949 | ||
d0918789 | 7950 | OFPROTO_FOR_EACH_TABLE (oftable, ofproto) { |
ac4aa4c8 | 7951 | struct rule *rule; |
52a90c29 | 7952 | |
bd53aa17 JR |
7953 | CLS_FOR_EACH_TARGET (rule, cr, &oftable->cls, &target, |
7954 | CLS_MAX_VERSION) { | |
8fd47924 JR |
7955 | if (minimask_get_vid_mask(rule->cr.match.mask) == VLAN_VID_MASK) { |
7956 | uint16_t vid = miniflow_get_vid(rule->cr.match.flow); | |
ac4aa4c8 JR |
7957 | |
7958 | bitmap_set1(vlan_bitmap, vid); | |
7959 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
52a90c29 BP |
7960 | } |
7961 | } | |
7962 | } | |
059ef3c6 EJ |
7963 | |
7964 | cls_rule_destroy(&target); | |
52a90c29 BP |
7965 | } |
7966 | ||
7967 | /* Returns true if new VLANs have come into use by the flow table since the | |
7968 | * last call to ofproto_get_vlan_usage(). | |
7969 | * | |
7970 | * We don't track when old VLANs stop being used. */ | |
7971 | bool | |
7972 | ofproto_has_vlan_usage_changed(const struct ofproto *ofproto) | |
7973 | { | |
7974 | return ofproto->vlans_changed; | |
7975 | } | |
7976 | ||
7977 | /* Configures a VLAN splinter binding between the ports identified by OpenFlow | |
7978 | * port numbers 'vlandev_ofp_port' and 'realdev_ofp_port'. If | |
7979 | * 'realdev_ofp_port' is nonzero, then the VLAN device is enslaved to the real | |
7980 | * device as a VLAN splinter for VLAN ID 'vid'. If 'realdev_ofp_port' is zero, | |
7981 | * then the VLAN device is un-enslaved. */ | |
7982 | int | |
4e022ec0 AW |
7983 | ofproto_port_set_realdev(struct ofproto *ofproto, ofp_port_t vlandev_ofp_port, |
7984 | ofp_port_t realdev_ofp_port, int vid) | |
52a90c29 BP |
7985 | { |
7986 | struct ofport *ofport; | |
7987 | int error; | |
7988 | ||
cb22974d | 7989 | ovs_assert(vlandev_ofp_port != realdev_ofp_port); |
52a90c29 BP |
7990 | |
7991 | ofport = ofproto_get_port(ofproto, vlandev_ofp_port); | |
7992 | if (!ofport) { | |
7993 | VLOG_WARN("%s: cannot set realdev on nonexistent port %"PRIu16, | |
7994 | ofproto->name, vlandev_ofp_port); | |
7995 | return EINVAL; | |
7996 | } | |
7997 | ||
7998 | if (!ofproto->ofproto_class->set_realdev) { | |
7999 | if (!vlandev_ofp_port) { | |
8000 | return 0; | |
8001 | } | |
8002 | VLOG_WARN("%s: vlan splinters not supported", ofproto->name); | |
8003 | return EOPNOTSUPP; | |
8004 | } | |
8005 | ||
8006 | error = ofproto->ofproto_class->set_realdev(ofport, realdev_ofp_port, vid); | |
8007 | if (error) { | |
8008 | VLOG_WARN("%s: setting realdev on port %"PRIu16" (%s) failed (%s)", | |
8009 | ofproto->name, vlandev_ofp_port, | |
10a89ef0 | 8010 | netdev_get_name(ofport->netdev), ovs_strerror(error)); |
52a90c29 BP |
8011 | } |
8012 | return error; | |
8013 | } |