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064af421 | 1 | /* |
3fbbcba7 | 2 | * Copyright (c) 2009-2015 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> | |
19 | #include "ofproto.h" | |
20 | #include <errno.h> | |
21 | #include <inttypes.h> | |
064af421 BP |
22 | #include <stdbool.h> |
23 | #include <stdlib.h> | |
448a4b2f | 24 | #include <unistd.h> |
52a90c29 | 25 | #include "bitmap.h" |
10a24935 | 26 | #include "byte-order.h" |
064af421 | 27 | #include "classifier.h" |
da4a6191 | 28 | #include "connectivity.h" |
19a87e36 | 29 | #include "connmgr.h" |
064af421 | 30 | #include "coverage.h" |
4f2cad2c | 31 | #include "dynamic-string.h" |
ca0f572c BP |
32 | #include "hash.h" |
33 | #include "hmap.h" | |
254750ce | 34 | #include "meta-flow.h" |
064af421 | 35 | #include "netdev.h" |
09246b99 | 36 | #include "nx-match.h" |
f25d0cf3 | 37 | #include "ofp-actions.h" |
90bf1e07 | 38 | #include "ofp-errors.h" |
982697a4 | 39 | #include "ofp-msgs.h" |
064af421 | 40 | #include "ofp-print.h" |
fa37b408 | 41 | #include "ofp-util.h" |
064af421 | 42 | #include "ofpbuf.h" |
5bee6e26 | 43 | #include "ofproto-provider.h" |
064af421 BP |
44 | #include "openflow/nicira-ext.h" |
45 | #include "openflow/openflow.h" | |
06a0f3e2 | 46 | #include "ovs-rcu.h" |
cf62fa4c | 47 | #include "dp-packet.h" |
064af421 BP |
48 | #include "packets.h" |
49 | #include "pinsched.h" | |
50 | #include "pktbuf.h" | |
51 | #include "poll-loop.h" | |
254750ce | 52 | #include "random.h" |
da4a6191 | 53 | #include "seq.h" |
064af421 | 54 | #include "shash.h" |
0d085684 | 55 | #include "simap.h" |
e8f9a7bb | 56 | #include "smap.h" |
b3c01ed3 | 57 | #include "sset.h" |
064af421 | 58 | #include "timeval.h" |
c4617b3c | 59 | #include "unaligned.h" |
4f2cad2c | 60 | #include "unixctl.h" |
e6211adc | 61 | #include "openvswitch/vlog.h" |
777af88d | 62 | #include "bundles.h" |
064af421 | 63 | |
d98e6007 | 64 | VLOG_DEFINE_THIS_MODULE(ofproto); |
064af421 | 65 | |
d76f09ea | 66 | COVERAGE_DEFINE(ofproto_flush); |
d76f09ea BP |
67 | COVERAGE_DEFINE(ofproto_packet_out); |
68 | COVERAGE_DEFINE(ofproto_queue_req); | |
69 | COVERAGE_DEFINE(ofproto_recv_openflow); | |
70 | COVERAGE_DEFINE(ofproto_reinit_ports); | |
d76f09ea BP |
71 | COVERAGE_DEFINE(ofproto_update_port); |
72 | ||
f017d986 JR |
73 | /* Default fields to use for prefix tries in each flow table, unless something |
74 | * else is configured. */ | |
75 | const enum mf_field_id default_prefix_fields[2] = | |
76 | { MFF_IPV4_DST, MFF_IPV4_SRC }; | |
77 | ||
d0918789 BP |
78 | /* oftable. */ |
79 | static void oftable_init(struct oftable *); | |
80 | static void oftable_destroy(struct oftable *); | |
878ae780 | 81 | |
254750ce BP |
82 | static void oftable_set_name(struct oftable *, const char *name); |
83 | ||
834fe5cb BP |
84 | static enum ofperr evict_rules_from_table(struct oftable *, |
85 | unsigned int extra_space) | |
86 | OVS_REQUIRES(ofproto_mutex); | |
254750ce BP |
87 | static void oftable_disable_eviction(struct oftable *); |
88 | static void oftable_enable_eviction(struct oftable *, | |
89 | const struct mf_subfield *fields, | |
90 | size_t n_fields); | |
91 | ||
15aaf599 | 92 | static void oftable_remove_rule(struct rule *rule) OVS_REQUIRES(ofproto_mutex); |
064af421 | 93 | |
254750ce BP |
94 | /* A set of rules within a single OpenFlow table (oftable) that have the same |
95 | * values for the oftable's eviction_fields. A rule to be evicted, when one is | |
96 | * needed, is taken from the eviction group that contains the greatest number | |
97 | * of rules. | |
98 | * | |
99 | * An oftable owns any number of eviction groups, each of which contains any | |
100 | * number of rules. | |
101 | * | |
102 | * Membership in an eviction group is imprecise, based on the hash of the | |
103 | * oftable's eviction_fields (in the eviction_group's id_node.hash member). | |
104 | * That is, if two rules have different eviction_fields, but those | |
105 | * eviction_fields hash to the same value, then they will belong to the same | |
106 | * eviction_group anyway. | |
107 | * | |
108 | * (When eviction is not enabled on an oftable, we don't track any eviction | |
109 | * groups, to save time and space.) */ | |
110 | struct eviction_group { | |
111 | struct hmap_node id_node; /* In oftable's "eviction_groups_by_id". */ | |
112 | struct heap_node size_node; /* In oftable's "eviction_groups_by_size". */ | |
113 | struct heap rules; /* Contains "struct rule"s. */ | |
114 | }; | |
115 | ||
3d900aa7 BP |
116 | static bool choose_rule_to_evict(struct oftable *table, struct rule **rulep) |
117 | OVS_REQUIRES(ofproto_mutex); | |
3d900aa7 BP |
118 | static uint32_t rule_eviction_priority(struct ofproto *ofproto, struct rule *) |
119 | OVS_REQUIRES(ofproto_mutex);; | |
120 | static void eviction_group_add_rule(struct rule *) | |
121 | OVS_REQUIRES(ofproto_mutex); | |
122 | static void eviction_group_remove_rule(struct rule *) | |
123 | OVS_REQUIRES(ofproto_mutex); | |
f29152ca | 124 | |
a9b22b7f BP |
125 | /* Criteria that flow_mod and other operations use for selecting rules on |
126 | * which to operate. */ | |
127 | struct rule_criteria { | |
128 | /* An OpenFlow table or 255 for all tables. */ | |
129 | uint8_t table_id; | |
130 | ||
131 | /* OpenFlow matching criteria. Interpreted different in "loose" way by | |
132 | * collect_rules_loose() and "strict" way by collect_rules_strict(), as | |
133 | * defined in the OpenFlow spec. */ | |
134 | struct cls_rule cr; | |
135 | ||
136 | /* Matching criteria for the OpenFlow cookie. Consider a bit B in a rule's | |
137 | * cookie and the corresponding bits C in 'cookie' and M in 'cookie_mask'. | |
138 | * The rule will not be selected if M is 1 and B != C. */ | |
139 | ovs_be64 cookie; | |
140 | ovs_be64 cookie_mask; | |
141 | ||
142 | /* Selection based on actions within a rule: | |
143 | * | |
144 | * If out_port != OFPP_ANY, selects only rules that output to out_port. | |
145 | * If out_group != OFPG_ALL, select only rules that output to out_group. */ | |
146 | ofp_port_t out_port; | |
147 | uint32_t out_group; | |
dd51dae2 BP |
148 | |
149 | /* If true, collects only rules that are modifiable. */ | |
150 | bool include_hidden; | |
151 | bool include_readonly; | |
a9b22b7f BP |
152 | }; |
153 | ||
154 | static void rule_criteria_init(struct rule_criteria *, uint8_t table_id, | |
eb391b76 | 155 | const struct match *match, int priority, |
a9b22b7f BP |
156 | ovs_be64 cookie, ovs_be64 cookie_mask, |
157 | ofp_port_t out_port, uint32_t out_group); | |
dd51dae2 BP |
158 | static void rule_criteria_require_rw(struct rule_criteria *, |
159 | bool can_write_readonly); | |
a9b22b7f BP |
160 | static void rule_criteria_destroy(struct rule_criteria *); |
161 | ||
35f48b8b BP |
162 | static enum ofperr collect_rules_loose(struct ofproto *, |
163 | const struct rule_criteria *, | |
164 | struct rule_collection *); | |
165 | ||
15aaf599 BP |
166 | /* A packet that needs to be passed to rule_execute(). |
167 | * | |
168 | * (We can't do this immediately from ofopgroup_complete() because that holds | |
169 | * ofproto_mutex, which rule_execute() needs released.) */ | |
35412852 | 170 | struct rule_execute { |
ca6ba700 | 171 | struct ovs_list list_node; /* In struct ofproto's "rule_executes" list. */ |
35412852 BP |
172 | struct rule *rule; /* Owns a reference to the rule. */ |
173 | ofp_port_t in_port; | |
cf62fa4c | 174 | struct dp_packet *packet; /* Owns the packet. */ |
35412852 BP |
175 | }; |
176 | ||
15aaf599 | 177 | static void run_rule_executes(struct ofproto *) OVS_EXCLUDED(ofproto_mutex); |
35412852 BP |
178 | static void destroy_rule_executes(struct ofproto *); |
179 | ||
35f48b8b BP |
180 | struct learned_cookie { |
181 | union { | |
182 | /* In struct ofproto's 'learned_cookies' hmap. */ | |
183 | struct hmap_node hmap_node OVS_GUARDED_BY(ofproto_mutex); | |
184 | ||
185 | /* In 'dead_cookies' list when removed from hmap. */ | |
ca6ba700 | 186 | struct ovs_list list_node; |
35f48b8b BP |
187 | } u; |
188 | ||
189 | /* Key. */ | |
190 | ovs_be64 cookie OVS_GUARDED_BY(ofproto_mutex); | |
191 | uint8_t table_id OVS_GUARDED_BY(ofproto_mutex); | |
192 | ||
193 | /* Number of references from "learn" actions. | |
194 | * | |
195 | * When this drops to 0, all of the flows in 'table_id' with the specified | |
196 | * 'cookie' are deleted. */ | |
197 | int n OVS_GUARDED_BY(ofproto_mutex); | |
198 | }; | |
199 | ||
200 | static const struct ofpact_learn *next_learn_with_delete( | |
201 | const struct rule_actions *, const struct ofpact_learn *start); | |
202 | ||
203 | static void learned_cookies_inc(struct ofproto *, const struct rule_actions *) | |
204 | OVS_REQUIRES(ofproto_mutex); | |
205 | static void learned_cookies_dec(struct ofproto *, const struct rule_actions *, | |
ca6ba700 | 206 | struct ovs_list *dead_cookies) |
35f48b8b | 207 | OVS_REQUIRES(ofproto_mutex); |
ca6ba700 | 208 | static void learned_cookies_flush(struct ofproto *, struct ovs_list *dead_cookies) |
35f48b8b BP |
209 | OVS_REQUIRES(ofproto_mutex); |
210 | ||
d0918789 | 211 | /* ofport. */ |
15aaf599 | 212 | static void ofport_destroy__(struct ofport *) OVS_EXCLUDED(ofproto_mutex); |
d0918789 BP |
213 | static void ofport_destroy(struct ofport *); |
214 | ||
215 | static void update_port(struct ofproto *, const char *devname); | |
216 | static int init_ports(struct ofproto *); | |
217 | static void reinit_ports(struct ofproto *); | |
7ee20df1 | 218 | |
fdcea803 GS |
219 | static long long int ofport_get_usage(const struct ofproto *, |
220 | ofp_port_t ofp_port); | |
221 | static void ofport_set_usage(struct ofproto *, ofp_port_t ofp_port, | |
222 | long long int last_used); | |
865b26a4 | 223 | static void ofport_remove_usage(struct ofproto *, ofp_port_t ofp_port); |
fdcea803 GS |
224 | |
225 | /* Ofport usage. | |
226 | * | |
227 | * Keeps track of the currently used and recently used ofport values and is | |
228 | * used to prevent immediate recycling of ofport values. */ | |
229 | struct ofport_usage { | |
230 | struct hmap_node hmap_node; /* In struct ofproto's "ofport_usage" hmap. */ | |
231 | ofp_port_t ofp_port; /* OpenFlow port number. */ | |
232 | long long int last_used; /* Last time the 'ofp_port' was used. LLONG_MAX | |
233 | represents in-use ofports. */ | |
234 | }; | |
235 | ||
254750ce | 236 | /* rule. */ |
254750ce | 237 | static void ofproto_rule_send_removed(struct rule *, uint8_t reason); |
834fe5cb | 238 | static bool rule_is_readonly(const struct rule *); |
bc5e6a91 JR |
239 | static void ofproto_rule_insert__(struct ofproto *, struct rule *) |
240 | OVS_REQUIRES(ofproto_mutex); | |
802f84ff JR |
241 | static void ofproto_rule_remove__(struct ofproto *, struct rule *) |
242 | OVS_REQUIRES(ofproto_mutex); | |
254750ce | 243 | |
baae3d02 BP |
244 | /* The source of a flow_mod request, in the code that processes flow_mods. |
245 | * | |
246 | * A flow table modification request can be generated externally, via OpenFlow, | |
247 | * or internally through a function call. This structure indicates the source | |
248 | * of an OpenFlow-generated flow_mod. For an internal flow_mod, it isn't | |
249 | * meaningful and thus supplied as NULL. */ | |
250 | struct flow_mod_requester { | |
251 | struct ofconn *ofconn; /* Connection on which flow_mod arrived. */ | |
834fe5cb | 252 | ovs_be32 xid; /* OpenFlow xid of flow_mod request. */ |
baae3d02 BP |
253 | }; |
254 | ||
d0918789 | 255 | /* OpenFlow. */ |
baae3d02 BP |
256 | static enum ofperr add_flow(struct ofproto *, struct ofputil_flow_mod *, |
257 | const struct flow_mod_requester *); | |
258 | ||
dd27be82 JR |
259 | static enum ofperr modify_flow_check__(struct ofproto *, |
260 | struct ofputil_flow_mod *, | |
261 | const struct rule *) | |
262 | OVS_REQUIRES(ofproto_mutex); | |
263 | static void modify_flow__(struct ofproto *, struct ofputil_flow_mod *, | |
264 | struct rule *, const struct flow_mod_requester *, | |
265 | struct ovs_list *dead_cookies) | |
266 | OVS_REQUIRES(ofproto_mutex); | |
9ca4a86f BP |
267 | static void delete_flows__(const struct rule_collection *, |
268 | enum ofp_flow_removed_reason, | |
269 | const struct flow_mod_requester *) | |
15aaf599 | 270 | OVS_REQUIRES(ofproto_mutex); |
834fe5cb BP |
271 | |
272 | static enum ofperr send_buffered_packet(struct ofconn *, uint32_t buffer_id, | |
273 | struct rule *) | |
274 | OVS_REQUIRES(ofproto_mutex); | |
275 | ||
7e9f8266 BP |
276 | static bool ofproto_group_exists__(const struct ofproto *ofproto, |
277 | uint32_t group_id) | |
278 | OVS_REQ_RDLOCK(ofproto->groups_rwlock); | |
84d68566 SH |
279 | static bool ofproto_group_exists(const struct ofproto *ofproto, |
280 | uint32_t group_id) | |
7e9f8266 | 281 | OVS_EXCLUDED(ofproto->groups_rwlock); |
7395c052 | 282 | static enum ofperr add_group(struct ofproto *, struct ofputil_group_mod *); |
b20f4073 | 283 | static void handle_openflow(struct ofconn *, const struct ofpbuf *); |
baae3d02 | 284 | static enum ofperr handle_flow_mod__(struct ofproto *, |
e3b56933 | 285 | struct ofputil_flow_mod *, |
baae3d02 | 286 | const struct flow_mod_requester *) |
15aaf599 | 287 | OVS_EXCLUDED(ofproto_mutex); |
65e0be10 BP |
288 | static void calc_duration(long long int start, long long int now, |
289 | uint32_t *sec, uint32_t *nsec); | |
f29152ca | 290 | |
d0918789 BP |
291 | /* ofproto. */ |
292 | static uint64_t pick_datapath_id(const struct ofproto *); | |
293 | static uint64_t pick_fallback_dpid(void); | |
294 | static void ofproto_destroy__(struct ofproto *); | |
ada3428f | 295 | static void update_mtu(struct ofproto *, struct ofport *); |
6b3f7f02 | 296 | static void meter_delete(struct ofproto *, uint32_t first, uint32_t last); |
062fea06 | 297 | static void meter_insert_rule(struct rule *); |
f29152ca | 298 | |
d0918789 | 299 | /* unixctl. */ |
abe529af | 300 | static void ofproto_unixctl_init(void); |
f29152ca | 301 | |
abe529af BP |
302 | /* All registered ofproto classes, in probe order. */ |
303 | static const struct ofproto_class **ofproto_classes; | |
304 | static size_t n_ofproto_classes; | |
305 | static size_t allocated_ofproto_classes; | |
7aa697dd | 306 | |
15aaf599 BP |
307 | /* Global lock that protects all flow table operations. */ |
308 | struct ovs_mutex ofproto_mutex = OVS_MUTEX_INITIALIZER; | |
abe7b10f | 309 | |
e79a6c83 | 310 | unsigned ofproto_flow_limit = OFPROTO_FLOW_LIMIT_DEFAULT; |
72310b04 | 311 | unsigned ofproto_max_idle = OFPROTO_MAX_IDLE_DEFAULT; |
380f49c4 | 312 | |
e79a6c83 | 313 | size_t n_handlers, n_revalidators; |
f2eee189 AW |
314 | size_t n_dpdk_rxqs; |
315 | char *pmd_cpu_mask; | |
6567010f | 316 | |
f797957a | 317 | /* Map from datapath name to struct ofproto, for use by unixctl commands. */ |
abe529af | 318 | static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos); |
ebe482fd | 319 | |
e1b1d06a JP |
320 | /* Initial mappings of port to OpenFlow number mappings. */ |
321 | static struct shash init_ofp_ports = SHASH_INITIALIZER(&init_ofp_ports); | |
322 | ||
abe529af | 323 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
f29152ca | 324 | |
40358701 GS |
325 | /* The default value of true waits for flow restore. */ |
326 | static bool flow_restore_wait = true; | |
327 | ||
b0408fca JP |
328 | /* Must be called to initialize the ofproto library. |
329 | * | |
330 | * The caller may pass in 'iface_hints', which contains an shash of | |
331 | * "iface_hint" elements indexed by the interface's name. The provider | |
332 | * may use these hints to describe the startup configuration in order to | |
333 | * reinitialize its state. The caller owns the provided data, so a | |
334 | * provider will make copies of anything required. An ofproto provider | |
335 | * will remove any existing state that is not described by the hint, and | |
336 | * may choose to remove it all. */ | |
337 | void | |
338 | ofproto_init(const struct shash *iface_hints) | |
abe529af | 339 | { |
e1b1d06a | 340 | struct shash_node *node; |
b0408fca | 341 | size_t i; |
f29152ca | 342 | |
b0408fca JP |
343 | ofproto_class_register(&ofproto_dpif_class); |
344 | ||
e1b1d06a JP |
345 | /* Make a local copy, since we don't own 'iface_hints' elements. */ |
346 | SHASH_FOR_EACH(node, iface_hints) { | |
347 | const struct iface_hint *orig_hint = node->data; | |
348 | struct iface_hint *new_hint = xmalloc(sizeof *new_hint); | |
349 | const char *br_type = ofproto_normalize_type(orig_hint->br_type); | |
350 | ||
351 | new_hint->br_name = xstrdup(orig_hint->br_name); | |
352 | new_hint->br_type = xstrdup(br_type); | |
353 | new_hint->ofp_port = orig_hint->ofp_port; | |
354 | ||
355 | shash_add(&init_ofp_ports, node->name, new_hint); | |
356 | } | |
357 | ||
b0408fca | 358 | for (i = 0; i < n_ofproto_classes; i++) { |
e1b1d06a | 359 | ofproto_classes[i]->init(&init_ofp_ports); |
abe529af BP |
360 | } |
361 | } | |
f29152ca | 362 | |
abe529af BP |
363 | /* 'type' should be a normalized datapath type, as returned by |
364 | * ofproto_normalize_type(). Returns the corresponding ofproto_class | |
365 | * structure, or a null pointer if there is none registered for 'type'. */ | |
366 | static const struct ofproto_class * | |
367 | ofproto_class_find__(const char *type) | |
368 | { | |
369 | size_t i; | |
f29152ca | 370 | |
abe529af BP |
371 | for (i = 0; i < n_ofproto_classes; i++) { |
372 | const struct ofproto_class *class = ofproto_classes[i]; | |
373 | struct sset types; | |
374 | bool found; | |
064af421 | 375 | |
abe529af BP |
376 | sset_init(&types); |
377 | class->enumerate_types(&types); | |
378 | found = sset_contains(&types, type); | |
379 | sset_destroy(&types); | |
bcf84111 | 380 | |
abe529af BP |
381 | if (found) { |
382 | return class; | |
383 | } | |
384 | } | |
385 | VLOG_WARN("unknown datapath type %s", type); | |
386 | return NULL; | |
387 | } | |
064af421 | 388 | |
abe529af BP |
389 | /* Registers a new ofproto class. After successful registration, new ofprotos |
390 | * of that type can be created using ofproto_create(). */ | |
391 | int | |
392 | ofproto_class_register(const struct ofproto_class *new_class) | |
393 | { | |
394 | size_t i; | |
7aa697dd | 395 | |
abe529af BP |
396 | for (i = 0; i < n_ofproto_classes; i++) { |
397 | if (ofproto_classes[i] == new_class) { | |
398 | return EEXIST; | |
399 | } | |
400 | } | |
064af421 | 401 | |
abe529af BP |
402 | if (n_ofproto_classes >= allocated_ofproto_classes) { |
403 | ofproto_classes = x2nrealloc(ofproto_classes, | |
404 | &allocated_ofproto_classes, | |
405 | sizeof *ofproto_classes); | |
406 | } | |
407 | ofproto_classes[n_ofproto_classes++] = new_class; | |
408 | return 0; | |
409 | } | |
064af421 | 410 | |
abe529af BP |
411 | /* Unregisters a datapath provider. 'type' must have been previously |
412 | * registered and not currently be in use by any ofprotos. After | |
413 | * unregistration new datapaths of that type cannot be opened using | |
414 | * ofproto_create(). */ | |
415 | int | |
416 | ofproto_class_unregister(const struct ofproto_class *class) | |
417 | { | |
418 | size_t i; | |
76ce9432 | 419 | |
abe529af BP |
420 | for (i = 0; i < n_ofproto_classes; i++) { |
421 | if (ofproto_classes[i] == class) { | |
422 | for (i++; i < n_ofproto_classes; i++) { | |
423 | ofproto_classes[i - 1] = ofproto_classes[i]; | |
424 | } | |
425 | n_ofproto_classes--; | |
426 | return 0; | |
427 | } | |
428 | } | |
429 | VLOG_WARN("attempted to unregister an ofproto class that is not " | |
430 | "registered"); | |
431 | return EAFNOSUPPORT; | |
432 | } | |
4a4cdb3b | 433 | |
f79e673f BP |
434 | /* Clears 'types' and enumerates all registered ofproto types into it. The |
435 | * caller must first initialize the sset. */ | |
436 | void | |
437 | ofproto_enumerate_types(struct sset *types) | |
438 | { | |
abe529af | 439 | size_t i; |
064af421 | 440 | |
c799c306 | 441 | sset_clear(types); |
abe529af BP |
442 | for (i = 0; i < n_ofproto_classes; i++) { |
443 | ofproto_classes[i]->enumerate_types(types); | |
444 | } | |
f79e673f | 445 | } |
064af421 | 446 | |
f79e673f BP |
447 | /* Returns the fully spelled out name for the given ofproto 'type'. |
448 | * | |
449 | * Normalized type string can be compared with strcmp(). Unnormalized type | |
450 | * string might be the same even if they have different spellings. */ | |
451 | const char * | |
452 | ofproto_normalize_type(const char *type) | |
453 | { | |
abe529af | 454 | return type && type[0] ? type : "system"; |
f79e673f | 455 | } |
064af421 | 456 | |
f79e673f BP |
457 | /* Clears 'names' and enumerates the names of all known created ofprotos with |
458 | * the given 'type'. The caller must first initialize the sset. Returns 0 if | |
459 | * successful, otherwise a positive errno value. | |
460 | * | |
461 | * Some kinds of datapaths might not be practically enumerable. This is not | |
462 | * considered an error. */ | |
463 | int | |
464 | ofproto_enumerate_names(const char *type, struct sset *names) | |
465 | { | |
abe529af BP |
466 | const struct ofproto_class *class = ofproto_class_find__(type); |
467 | return class ? class->enumerate_names(type, names) : EAFNOSUPPORT; | |
239ad7d1 | 468 | } |
7aa697dd | 469 | |
064af421 | 470 | int |
abe529af | 471 | ofproto_create(const char *datapath_name, const char *datapath_type, |
064af421 BP |
472 | struct ofproto **ofprotop) |
473 | { | |
abe529af BP |
474 | const struct ofproto_class *class; |
475 | struct ofproto *ofproto; | |
064af421 | 476 | int error; |
c2f0373a | 477 | int i; |
064af421 BP |
478 | |
479 | *ofprotop = NULL; | |
480 | ||
7aa697dd BP |
481 | ofproto_unixctl_init(); |
482 | ||
abe529af BP |
483 | datapath_type = ofproto_normalize_type(datapath_type); |
484 | class = ofproto_class_find__(datapath_type); | |
485 | if (!class) { | |
486 | VLOG_WARN("could not create datapath %s of unknown type %s", | |
487 | datapath_name, datapath_type); | |
488 | return EAFNOSUPPORT; | |
064af421 BP |
489 | } |
490 | ||
abe529af BP |
491 | ofproto = class->alloc(); |
492 | if (!ofproto) { | |
493 | VLOG_ERR("failed to allocate datapath %s of type %s", | |
494 | datapath_name, datapath_type); | |
495 | return ENOMEM; | |
496 | } | |
497 | ||
498 | /* Initialize. */ | |
abe7b10f | 499 | ovs_mutex_lock(&ofproto_mutex); |
abe529af BP |
500 | memset(ofproto, 0, sizeof *ofproto); |
501 | ofproto->ofproto_class = class; | |
502 | ofproto->name = xstrdup(datapath_name); | |
503 | ofproto->type = xstrdup(datapath_type); | |
504 | hmap_insert(&all_ofprotos, &ofproto->hmap_node, | |
505 | hash_string(ofproto->name, 0)); | |
506 | ofproto->datapath_id = 0; | |
8402c74b | 507 | ofproto->forward_bpdu = false; |
abe529af | 508 | ofproto->fallback_dpid = pick_fallback_dpid(); |
061bfea4 BP |
509 | ofproto->mfr_desc = NULL; |
510 | ofproto->hw_desc = NULL; | |
511 | ofproto->sw_desc = NULL; | |
512 | ofproto->serial_desc = NULL; | |
513 | ofproto->dp_desc = NULL; | |
7257b535 | 514 | ofproto->frag_handling = OFPC_FRAG_NORMAL; |
abe529af | 515 | hmap_init(&ofproto->ports); |
fdcea803 | 516 | hmap_init(&ofproto->ofport_usage); |
abe529af | 517 | shash_init(&ofproto->port_by_name); |
e1b1d06a | 518 | simap_init(&ofproto->ofp_requests); |
430dbb14 | 519 | ofproto->max_ports = ofp_to_u16(OFPP_MAX); |
448c2fa8 | 520 | ofproto->eviction_group_timer = LLONG_MIN; |
6c1491fb BP |
521 | ofproto->tables = NULL; |
522 | ofproto->n_tables = 0; | |
98eaac36 | 523 | hindex_init(&ofproto->cookies); |
35f48b8b | 524 | hmap_init(&ofproto->learned_cookies); |
e503cc19 | 525 | list_init(&ofproto->expirable); |
abe529af | 526 | ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name); |
35412852 | 527 | guarded_list_init(&ofproto->rule_executes); |
52a90c29 BP |
528 | ofproto->vlan_bitmap = NULL; |
529 | ofproto->vlans_changed = false; | |
ada3428f | 530 | ofproto->min_mtu = INT_MAX; |
7395c052 NZ |
531 | ovs_rwlock_init(&ofproto->groups_rwlock); |
532 | hmap_init(&ofproto->groups); | |
abe7b10f | 533 | ovs_mutex_unlock(&ofproto_mutex); |
0ae01c64 | 534 | ofproto->ogf.types = 0xf; |
7cb279c2 SH |
535 | ofproto->ogf.capabilities = OFPGFC_CHAINING | OFPGFC_SELECT_LIVENESS | |
536 | OFPGFC_SELECT_WEIGHT; | |
08d1e234 BP |
537 | for (i = 0; i < 4; i++) { |
538 | ofproto->ogf.max_groups[i] = OFPG_MAX; | |
539 | ofproto->ogf.ofpacts[i] = (UINT64_C(1) << N_OFPACTS) - 1; | |
540 | } | |
abe529af | 541 | |
0f5f95a9 | 542 | error = ofproto->ofproto_class->construct(ofproto); |
19a87e36 | 543 | if (error) { |
abe529af | 544 | VLOG_ERR("failed to open datapath %s: %s", |
10a89ef0 | 545 | datapath_name, ovs_strerror(error)); |
58f19539 | 546 | connmgr_destroy(ofproto->connmgr); |
abe529af | 547 | ofproto_destroy__(ofproto); |
19a87e36 BP |
548 | return error; |
549 | } | |
073e2a6f | 550 | |
c2f0373a | 551 | /* Check that hidden tables, if any, are at the end. */ |
cb22974d | 552 | ovs_assert(ofproto->n_tables); |
c2f0373a BP |
553 | for (i = 0; i + 1 < ofproto->n_tables; i++) { |
554 | enum oftable_flags flags = ofproto->tables[i].flags; | |
555 | enum oftable_flags next_flags = ofproto->tables[i + 1].flags; | |
556 | ||
cb22974d | 557 | ovs_assert(!(flags & OFTABLE_HIDDEN) || next_flags & OFTABLE_HIDDEN); |
c2f0373a | 558 | } |
19a87e36 | 559 | |
abe529af | 560 | ofproto->datapath_id = pick_datapath_id(ofproto); |
abe529af | 561 | init_ports(ofproto); |
7aa697dd | 562 | |
9cae45dc JR |
563 | /* Initialize meters table. */ |
564 | if (ofproto->ofproto_class->meter_get_features) { | |
565 | ofproto->ofproto_class->meter_get_features(ofproto, | |
566 | &ofproto->meter_features); | |
567 | } else { | |
568 | memset(&ofproto->meter_features, 0, sizeof ofproto->meter_features); | |
569 | } | |
570 | ofproto->meters = xzalloc((ofproto->meter_features.max_meters + 1) | |
571 | * sizeof(struct meter *)); | |
572 | ||
abe529af | 573 | *ofprotop = ofproto; |
064af421 BP |
574 | return 0; |
575 | } | |
576 | ||
91858960 BP |
577 | /* Must be called (only) by an ofproto implementation in its constructor |
578 | * function. See the large comment on 'construct' in struct ofproto_class for | |
579 | * details. */ | |
0f5f95a9 BP |
580 | void |
581 | ofproto_init_tables(struct ofproto *ofproto, int n_tables) | |
582 | { | |
583 | struct oftable *table; | |
584 | ||
cb22974d BP |
585 | ovs_assert(!ofproto->n_tables); |
586 | ovs_assert(n_tables >= 1 && n_tables <= 255); | |
0f5f95a9 BP |
587 | |
588 | ofproto->n_tables = n_tables; | |
589 | ofproto->tables = xmalloc(n_tables * sizeof *ofproto->tables); | |
590 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
591 | oftable_init(table); | |
592 | } | |
593 | } | |
594 | ||
91858960 BP |
595 | /* To be optionally called (only) by an ofproto implementation in its |
596 | * constructor function. See the large comment on 'construct' in struct | |
597 | * ofproto_class for details. | |
598 | * | |
599 | * Sets the maximum number of ports to 'max_ports'. The ofproto generic layer | |
600 | * will then ensure that actions passed into the ofproto implementation will | |
601 | * not refer to OpenFlow ports numbered 'max_ports' or higher. If this | |
602 | * function is not called, there will be no such restriction. | |
603 | * | |
604 | * Reserved ports numbered OFPP_MAX and higher are special and not subject to | |
605 | * the 'max_ports' restriction. */ | |
606 | void | |
430dbb14 | 607 | ofproto_init_max_ports(struct ofproto *ofproto, uint16_t max_ports) |
91858960 | 608 | { |
430dbb14 | 609 | ovs_assert(max_ports <= ofp_to_u16(OFPP_MAX)); |
91858960 BP |
610 | ofproto->max_ports = max_ports; |
611 | } | |
612 | ||
e825ace2 BP |
613 | uint64_t |
614 | ofproto_get_datapath_id(const struct ofproto *ofproto) | |
615 | { | |
616 | return ofproto->datapath_id; | |
617 | } | |
618 | ||
064af421 BP |
619 | void |
620 | ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id) | |
621 | { | |
622 | uint64_t old_dpid = p->datapath_id; | |
fa60c019 | 623 | p->datapath_id = datapath_id ? datapath_id : pick_datapath_id(p); |
064af421 | 624 | if (p->datapath_id != old_dpid) { |
76ce9432 BP |
625 | /* Force all active connections to reconnect, since there is no way to |
626 | * notify a controller that the datapath ID has changed. */ | |
fa05809b | 627 | ofproto_reconnect_controllers(p); |
064af421 BP |
628 | } |
629 | } | |
630 | ||
76ce9432 BP |
631 | void |
632 | ofproto_set_controllers(struct ofproto *p, | |
633 | const struct ofproto_controller *controllers, | |
1d9ffc17 | 634 | size_t n_controllers, uint32_t allowed_versions) |
76ce9432 | 635 | { |
1d9ffc17 SH |
636 | connmgr_set_controllers(p->connmgr, controllers, n_controllers, |
637 | allowed_versions); | |
064af421 BP |
638 | } |
639 | ||
31681a5d JP |
640 | void |
641 | ofproto_set_fail_mode(struct ofproto *p, enum ofproto_fail_mode fail_mode) | |
642 | { | |
19a87e36 | 643 | connmgr_set_fail_mode(p->connmgr, fail_mode); |
31681a5d JP |
644 | } |
645 | ||
fa05809b BP |
646 | /* Drops the connections between 'ofproto' and all of its controllers, forcing |
647 | * them to reconnect. */ | |
648 | void | |
649 | ofproto_reconnect_controllers(struct ofproto *ofproto) | |
650 | { | |
19a87e36 | 651 | connmgr_reconnect(ofproto->connmgr); |
917e50e1 BP |
652 | } |
653 | ||
654 | /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s | |
655 | * in-band control should guarantee access, in the same way that in-band | |
656 | * control guarantees access to OpenFlow controllers. */ | |
657 | void | |
658 | ofproto_set_extra_in_band_remotes(struct ofproto *ofproto, | |
659 | const struct sockaddr_in *extras, size_t n) | |
660 | { | |
19a87e36 | 661 | connmgr_set_extra_in_band_remotes(ofproto->connmgr, extras, n); |
917e50e1 BP |
662 | } |
663 | ||
b1da6250 BP |
664 | /* Sets the OpenFlow queue used by flows set up by in-band control on |
665 | * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control | |
666 | * flows will use the default queue. */ | |
667 | void | |
668 | ofproto_set_in_band_queue(struct ofproto *ofproto, int queue_id) | |
669 | { | |
19a87e36 | 670 | connmgr_set_in_band_queue(ofproto->connmgr, queue_id); |
b1da6250 BP |
671 | } |
672 | ||
084f5290 SH |
673 | /* Sets the number of flows at which eviction from the kernel flow table |
674 | * will occur. */ | |
675 | void | |
e79a6c83 | 676 | ofproto_set_flow_limit(unsigned limit) |
084f5290 | 677 | { |
e79a6c83 | 678 | ofproto_flow_limit = limit; |
084f5290 SH |
679 | } |
680 | ||
72310b04 JS |
681 | /* Sets the maximum idle time for flows in the datapath before they are |
682 | * expired. */ | |
683 | void | |
684 | ofproto_set_max_idle(unsigned max_idle) | |
685 | { | |
686 | ofproto_max_idle = max_idle; | |
687 | } | |
688 | ||
b53055f4 | 689 | /* If forward_bpdu is true, the NORMAL action will forward frames with |
8402c74b SS |
690 | * reserved (e.g. STP) destination Ethernet addresses. if forward_bpdu is false, |
691 | * the NORMAL action will drop these frames. */ | |
692 | void | |
693 | ofproto_set_forward_bpdu(struct ofproto *ofproto, bool forward_bpdu) | |
694 | { | |
695 | bool old_val = ofproto->forward_bpdu; | |
696 | ofproto->forward_bpdu = forward_bpdu; | |
697 | if (old_val != ofproto->forward_bpdu) { | |
698 | if (ofproto->ofproto_class->forward_bpdu_changed) { | |
699 | ofproto->ofproto_class->forward_bpdu_changed(ofproto); | |
700 | } | |
b53055f4 | 701 | } |
8402c74b SS |
702 | } |
703 | ||
e764773c | 704 | /* Sets the MAC aging timeout for the OFPP_NORMAL action on 'ofproto' to |
c4069512 BP |
705 | * 'idle_time', in seconds, and the maximum number of MAC table entries to |
706 | * 'max_entries'. */ | |
e764773c | 707 | void |
c4069512 BP |
708 | ofproto_set_mac_table_config(struct ofproto *ofproto, unsigned idle_time, |
709 | size_t max_entries) | |
e764773c | 710 | { |
c4069512 BP |
711 | if (ofproto->ofproto_class->set_mac_table_config) { |
712 | ofproto->ofproto_class->set_mac_table_config(ofproto, idle_time, | |
713 | max_entries); | |
e764773c BP |
714 | } |
715 | } | |
716 | ||
7c38d0a5 FL |
717 | /* Multicast snooping configuration. */ |
718 | ||
719 | /* Configures multicast snooping on 'ofproto' using the settings | |
720 | * defined in 's'. If 's' is NULL, disables multicast snooping. | |
721 | * | |
722 | * Returns 0 if successful, otherwise a positive errno value. */ | |
723 | int | |
724 | ofproto_set_mcast_snooping(struct ofproto *ofproto, | |
725 | const struct ofproto_mcast_snooping_settings *s) | |
726 | { | |
727 | return (ofproto->ofproto_class->set_mcast_snooping | |
728 | ? ofproto->ofproto_class->set_mcast_snooping(ofproto, s) | |
729 | : EOPNOTSUPP); | |
730 | } | |
731 | ||
8e04a33f | 732 | /* Configures multicast snooping flood settings on 'ofp_port' of 'ofproto'. |
7c38d0a5 FL |
733 | * |
734 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
735 | int | |
8e04a33f FL |
736 | ofproto_port_set_mcast_snooping(struct ofproto *ofproto, void *aux, |
737 | const struct ofproto_mcast_snooping_port_settings *s) | |
7c38d0a5 FL |
738 | { |
739 | return (ofproto->ofproto_class->set_mcast_snooping_port | |
8e04a33f | 740 | ? ofproto->ofproto_class->set_mcast_snooping_port(ofproto, aux, s) |
7c38d0a5 FL |
741 | : EOPNOTSUPP); |
742 | } | |
743 | ||
f2eee189 AW |
744 | void |
745 | ofproto_set_n_dpdk_rxqs(int n_rxqs) | |
746 | { | |
747 | n_dpdk_rxqs = MAX(n_rxqs, 0); | |
748 | } | |
749 | ||
750 | void | |
751 | ofproto_set_cpu_mask(const char *cmask) | |
752 | { | |
753 | free(pmd_cpu_mask); | |
754 | ||
755 | pmd_cpu_mask = cmask ? xstrdup(cmask) : NULL; | |
756 | } | |
757 | ||
448a4b2f | 758 | void |
30ea0da7 | 759 | ofproto_set_threads(int n_handlers_, int n_revalidators_) |
448a4b2f | 760 | { |
e79a6c83 EJ |
761 | int threads = MAX(count_cpu_cores(), 2); |
762 | ||
30ea0da7 GS |
763 | n_revalidators = MAX(n_revalidators_, 0); |
764 | n_handlers = MAX(n_handlers_, 0); | |
e79a6c83 EJ |
765 | |
766 | if (!n_revalidators) { | |
767 | n_revalidators = n_handlers | |
768 | ? MAX(threads - (int) n_handlers, 1) | |
769 | : threads / 4 + 1; | |
770 | } | |
771 | ||
772 | if (!n_handlers) { | |
773 | n_handlers = MAX(threads - (int) n_revalidators, 1); | |
774 | } | |
448a4b2f AW |
775 | } |
776 | ||
8b6ff729 BP |
777 | void |
778 | ofproto_set_dp_desc(struct ofproto *p, const char *dp_desc) | |
779 | { | |
780 | free(p->dp_desc); | |
781 | p->dp_desc = dp_desc ? xstrdup(dp_desc) : NULL; | |
782 | } | |
783 | ||
064af421 | 784 | int |
81e2083f | 785 | ofproto_set_snoops(struct ofproto *ofproto, const struct sset *snoops) |
064af421 | 786 | { |
19a87e36 | 787 | return connmgr_set_snoops(ofproto->connmgr, snoops); |
064af421 BP |
788 | } |
789 | ||
790 | int | |
0193b2af JG |
791 | ofproto_set_netflow(struct ofproto *ofproto, |
792 | const struct netflow_options *nf_options) | |
064af421 | 793 | { |
abe529af BP |
794 | if (nf_options && sset_is_empty(&nf_options->collectors)) { |
795 | nf_options = NULL; | |
796 | } | |
797 | ||
798 | if (ofproto->ofproto_class->set_netflow) { | |
799 | return ofproto->ofproto_class->set_netflow(ofproto, nf_options); | |
064af421 | 800 | } else { |
abe529af | 801 | return nf_options ? EOPNOTSUPP : 0; |
064af421 BP |
802 | } |
803 | } | |
804 | ||
abe529af | 805 | int |
72b06300 BP |
806 | ofproto_set_sflow(struct ofproto *ofproto, |
807 | const struct ofproto_sflow_options *oso) | |
808 | { | |
abe529af BP |
809 | if (oso && sset_is_empty(&oso->targets)) { |
810 | oso = NULL; | |
811 | } | |
72b06300 | 812 | |
abe529af BP |
813 | if (ofproto->ofproto_class->set_sflow) { |
814 | return ofproto->ofproto_class->set_sflow(ofproto, oso); | |
72b06300 | 815 | } else { |
abe529af | 816 | return oso ? EOPNOTSUPP : 0; |
72b06300 BP |
817 | } |
818 | } | |
29089a54 RL |
819 | |
820 | int | |
821 | ofproto_set_ipfix(struct ofproto *ofproto, | |
822 | const struct ofproto_ipfix_bridge_exporter_options *bo, | |
823 | const struct ofproto_ipfix_flow_exporter_options *fo, | |
824 | size_t n_fo) | |
825 | { | |
826 | if (ofproto->ofproto_class->set_ipfix) { | |
827 | return ofproto->ofproto_class->set_ipfix(ofproto, bo, fo, n_fo); | |
828 | } else { | |
829 | return (bo || fo) ? EOPNOTSUPP : 0; | |
830 | } | |
831 | } | |
40358701 GS |
832 | |
833 | void | |
834 | ofproto_set_flow_restore_wait(bool flow_restore_wait_db) | |
835 | { | |
836 | flow_restore_wait = flow_restore_wait_db; | |
837 | } | |
838 | ||
839 | bool | |
840 | ofproto_get_flow_restore_wait(void) | |
841 | { | |
842 | return flow_restore_wait; | |
843 | } | |
844 | ||
e7934396 | 845 | \f |
21f7563c JP |
846 | /* Spanning Tree Protocol (STP) configuration. */ |
847 | ||
848 | /* Configures STP on 'ofproto' using the settings defined in 's'. If | |
849 | * 's' is NULL, disables STP. | |
850 | * | |
851 | * Returns 0 if successful, otherwise a positive errno value. */ | |
852 | int | |
853 | ofproto_set_stp(struct ofproto *ofproto, | |
854 | const struct ofproto_stp_settings *s) | |
855 | { | |
856 | return (ofproto->ofproto_class->set_stp | |
857 | ? ofproto->ofproto_class->set_stp(ofproto, s) | |
858 | : EOPNOTSUPP); | |
859 | } | |
860 | ||
861 | /* Retrieves STP status of 'ofproto' and stores it in 's'. If the | |
862 | * 'enabled' member of 's' is false, then the other members are not | |
863 | * meaningful. | |
864 | * | |
865 | * Returns 0 if successful, otherwise a positive errno value. */ | |
866 | int | |
867 | ofproto_get_stp_status(struct ofproto *ofproto, | |
868 | struct ofproto_stp_status *s) | |
869 | { | |
870 | return (ofproto->ofproto_class->get_stp_status | |
871 | ? ofproto->ofproto_class->get_stp_status(ofproto, s) | |
872 | : EOPNOTSUPP); | |
873 | } | |
874 | ||
875 | /* Configures STP on 'ofp_port' of 'ofproto' using the settings defined | |
876 | * in 's'. The caller is responsible for assigning STP port numbers | |
877 | * (using the 'port_num' member in the range of 1 through 255, inclusive) | |
878 | * and ensuring there are no duplicates. If the 's' is NULL, then STP | |
879 | * is disabled on the port. | |
880 | * | |
881 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
882 | int | |
4e022ec0 | 883 | ofproto_port_set_stp(struct ofproto *ofproto, ofp_port_t ofp_port, |
21f7563c JP |
884 | const struct ofproto_port_stp_settings *s) |
885 | { | |
886 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
887 | if (!ofport) { | |
888 | VLOG_WARN("%s: cannot configure STP on nonexistent port %"PRIu16, | |
889 | ofproto->name, ofp_port); | |
890 | return ENODEV; | |
891 | } | |
892 | ||
893 | return (ofproto->ofproto_class->set_stp_port | |
894 | ? ofproto->ofproto_class->set_stp_port(ofport, s) | |
895 | : EOPNOTSUPP); | |
896 | } | |
897 | ||
898 | /* Retrieves STP port status of 'ofp_port' on 'ofproto' and stores it in | |
899 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
900 | * are not meaningful. | |
901 | * | |
902 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
903 | int | |
4e022ec0 | 904 | ofproto_port_get_stp_status(struct ofproto *ofproto, ofp_port_t ofp_port, |
21f7563c JP |
905 | struct ofproto_port_stp_status *s) |
906 | { | |
907 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
908 | if (!ofport) { | |
b0a5c43b JP |
909 | VLOG_WARN_RL(&rl, "%s: cannot get STP status on nonexistent " |
910 | "port %"PRIu16, ofproto->name, ofp_port); | |
21f7563c JP |
911 | return ENODEV; |
912 | } | |
913 | ||
914 | return (ofproto->ofproto_class->get_stp_port_status | |
915 | ? ofproto->ofproto_class->get_stp_port_status(ofport, s) | |
916 | : EOPNOTSUPP); | |
917 | } | |
fd28ce3a JS |
918 | |
919 | /* Retrieves STP port statistics of 'ofp_port' on 'ofproto' and stores it in | |
920 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
921 | * are not meaningful. | |
922 | * | |
923 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
924 | int | |
925 | ofproto_port_get_stp_stats(struct ofproto *ofproto, ofp_port_t ofp_port, | |
926 | struct ofproto_port_stp_stats *s) | |
927 | { | |
928 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
929 | if (!ofport) { | |
930 | VLOG_WARN_RL(&rl, "%s: cannot get STP stats on nonexistent " | |
931 | "port %"PRIu16, ofproto->name, ofp_port); | |
932 | return ENODEV; | |
933 | } | |
934 | ||
935 | return (ofproto->ofproto_class->get_stp_port_stats | |
936 | ? ofproto->ofproto_class->get_stp_port_stats(ofport, s) | |
937 | : EOPNOTSUPP); | |
938 | } | |
9efd308e DV |
939 | |
940 | /* Rapid Spanning Tree Protocol (RSTP) configuration. */ | |
941 | ||
942 | /* Configures RSTP on 'ofproto' using the settings defined in 's'. If | |
943 | * 's' is NULL, disables RSTP. | |
944 | * | |
945 | * Returns 0 if successful, otherwise a positive errno value. */ | |
946 | int | |
947 | ofproto_set_rstp(struct ofproto *ofproto, | |
948 | const struct ofproto_rstp_settings *s) | |
949 | { | |
950 | if (!ofproto->ofproto_class->set_rstp) { | |
951 | return EOPNOTSUPP; | |
952 | } | |
953 | ofproto->ofproto_class->set_rstp(ofproto, s); | |
954 | return 0; | |
955 | } | |
956 | ||
957 | /* Retrieves RSTP status of 'ofproto' and stores it in 's'. If the | |
958 | * 'enabled' member of 's' is false, then the other members are not | |
959 | * meaningful. | |
960 | * | |
961 | * Returns 0 if successful, otherwise a positive errno value. */ | |
962 | int | |
963 | ofproto_get_rstp_status(struct ofproto *ofproto, | |
964 | struct ofproto_rstp_status *s) | |
965 | { | |
966 | if (!ofproto->ofproto_class->get_rstp_status) { | |
967 | return EOPNOTSUPP; | |
968 | } | |
969 | ofproto->ofproto_class->get_rstp_status(ofproto, s); | |
970 | return 0; | |
971 | } | |
972 | ||
973 | /* Configures RSTP on 'ofp_port' of 'ofproto' using the settings defined | |
974 | * in 's'. The caller is responsible for assigning RSTP port numbers | |
975 | * (using the 'port_num' member in the range of 1 through 255, inclusive) | |
976 | * and ensuring there are no duplicates. If the 's' is NULL, then RSTP | |
977 | * is disabled on the port. | |
978 | * | |
979 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
980 | int | |
981 | ofproto_port_set_rstp(struct ofproto *ofproto, ofp_port_t ofp_port, | |
982 | const struct ofproto_port_rstp_settings *s) | |
983 | { | |
984 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
985 | if (!ofport) { | |
986 | VLOG_WARN("%s: cannot configure RSTP on nonexistent port %"PRIu16, | |
987 | ofproto->name, ofp_port); | |
988 | return ENODEV; | |
989 | } | |
990 | ||
991 | if (!ofproto->ofproto_class->set_rstp_port) { | |
992 | return EOPNOTSUPP; | |
993 | } | |
994 | ofproto->ofproto_class->set_rstp_port(ofport, s); | |
995 | return 0; | |
996 | } | |
997 | ||
998 | /* Retrieves RSTP port status of 'ofp_port' on 'ofproto' and stores it in | |
999 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
1000 | * are not meaningful. | |
1001 | * | |
1002 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
1003 | int | |
1004 | ofproto_port_get_rstp_status(struct ofproto *ofproto, ofp_port_t ofp_port, | |
1005 | struct ofproto_port_rstp_status *s) | |
1006 | { | |
1007 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1008 | if (!ofport) { | |
1009 | VLOG_WARN_RL(&rl, "%s: cannot get RSTP status on nonexistent " | |
1010 | "port %"PRIu16, ofproto->name, ofp_port); | |
1011 | return ENODEV; | |
1012 | } | |
1013 | ||
1014 | if (!ofproto->ofproto_class->get_rstp_port_status) { | |
1015 | return EOPNOTSUPP; | |
1016 | } | |
1017 | ofproto->ofproto_class->get_rstp_port_status(ofport, s); | |
1018 | return 0; | |
1019 | } | |
21f7563c | 1020 | \f |
8b36f51e EJ |
1021 | /* Queue DSCP configuration. */ |
1022 | ||
1023 | /* Registers meta-data associated with the 'n_qdscp' Qualities of Service | |
1024 | * 'queues' attached to 'ofport'. This data is not intended to be sufficient | |
1025 | * to implement QoS. Instead, it is used to implement features which require | |
1026 | * knowledge of what queues exist on a port, and some basic information about | |
1027 | * them. | |
1028 | * | |
1029 | * Returns 0 if successful, otherwise a positive errno value. */ | |
1030 | int | |
4e022ec0 | 1031 | ofproto_port_set_queues(struct ofproto *ofproto, ofp_port_t ofp_port, |
8b36f51e EJ |
1032 | const struct ofproto_port_queue *queues, |
1033 | size_t n_queues) | |
1034 | { | |
1035 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1036 | ||
1037 | if (!ofport) { | |
1038 | VLOG_WARN("%s: cannot set queues on nonexistent port %"PRIu16, | |
1039 | ofproto->name, ofp_port); | |
1040 | return ENODEV; | |
1041 | } | |
1042 | ||
1043 | return (ofproto->ofproto_class->set_queues | |
1044 | ? ofproto->ofproto_class->set_queues(ofport, queues, n_queues) | |
1045 | : EOPNOTSUPP); | |
1046 | } | |
1047 | \f | |
0477baa9 DF |
1048 | /* LLDP configuration. */ |
1049 | void | |
1050 | ofproto_port_set_lldp(struct ofproto *ofproto, | |
1051 | ofp_port_t ofp_port, | |
1052 | const struct smap *cfg) | |
1053 | { | |
1054 | struct ofport *ofport; | |
1055 | int error; | |
1056 | ||
1057 | ofport = ofproto_get_port(ofproto, ofp_port); | |
1058 | if (!ofport) { | |
1059 | VLOG_WARN("%s: cannot configure LLDP on nonexistent port %"PRIu16, | |
1060 | ofproto->name, ofp_port); | |
1061 | return; | |
1062 | } | |
1063 | error = (ofproto->ofproto_class->set_lldp | |
1064 | ? ofproto->ofproto_class->set_lldp(ofport, cfg) | |
1065 | : EOPNOTSUPP); | |
1066 | if (error) { | |
1067 | VLOG_WARN("%s: lldp configuration on port %"PRIu16" (%s) failed (%s)", | |
1068 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
1069 | ovs_strerror(error)); | |
1070 | } | |
1071 | } | |
1072 | ||
1073 | int | |
1074 | ofproto_set_aa(struct ofproto *ofproto, void *aux OVS_UNUSED, | |
1075 | const struct aa_settings *s) | |
1076 | { | |
1077 | if (!ofproto->ofproto_class->set_aa) { | |
1078 | return EOPNOTSUPP; | |
1079 | } | |
1080 | ofproto->ofproto_class->set_aa(ofproto, s); | |
1081 | return 0; | |
1082 | } | |
1083 | ||
1084 | int | |
1085 | ofproto_aa_mapping_register(struct ofproto *ofproto, void *aux, | |
1086 | const struct aa_mapping_settings *s) | |
1087 | { | |
1088 | if (!ofproto->ofproto_class->aa_mapping_set) { | |
1089 | return EOPNOTSUPP; | |
1090 | } | |
1091 | ofproto->ofproto_class->aa_mapping_set(ofproto, aux, s); | |
1092 | return 0; | |
1093 | } | |
1094 | ||
1095 | int | |
1096 | ofproto_aa_mapping_unregister(struct ofproto *ofproto, void *aux) | |
1097 | { | |
1098 | if (!ofproto->ofproto_class->aa_mapping_unset) { | |
1099 | return EOPNOTSUPP; | |
1100 | } | |
1101 | ofproto->ofproto_class->aa_mapping_unset(ofproto, aux); | |
1102 | return 0; | |
1103 | } | |
1104 | ||
1105 | int | |
1106 | ofproto_aa_vlan_get_queued(struct ofproto *ofproto, | |
1107 | struct ovs_list *list) | |
1108 | { | |
1109 | if (!ofproto->ofproto_class->aa_vlan_get_queued) { | |
1110 | return EOPNOTSUPP; | |
1111 | } | |
1112 | ofproto->ofproto_class->aa_vlan_get_queued(ofproto, list); | |
1113 | return 0; | |
1114 | } | |
1115 | ||
1116 | unsigned int | |
1117 | ofproto_aa_vlan_get_queue_size(struct ofproto *ofproto) | |
1118 | { | |
1119 | if (!ofproto->ofproto_class->aa_vlan_get_queue_size) { | |
1120 | return EOPNOTSUPP; | |
1121 | } | |
1122 | return ofproto->ofproto_class->aa_vlan_get_queue_size(ofproto); | |
1123 | } | |
1124 | ||
e7934396 BP |
1125 | /* Connectivity Fault Management configuration. */ |
1126 | ||
892815f5 | 1127 | /* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */ |
e7934396 | 1128 | void |
4e022ec0 | 1129 | ofproto_port_clear_cfm(struct ofproto *ofproto, ofp_port_t ofp_port) |
e7934396 | 1130 | { |
abe529af BP |
1131 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1132 | if (ofport && ofproto->ofproto_class->set_cfm) { | |
a5610457 | 1133 | ofproto->ofproto_class->set_cfm(ofport, NULL); |
e7934396 BP |
1134 | } |
1135 | } | |
72b06300 | 1136 | |
892815f5 | 1137 | /* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes |
93b8df38 EJ |
1138 | * basic configuration from the configuration members in 'cfm', and the remote |
1139 | * maintenance point ID from remote_mpid. Ignores the statistics members of | |
1140 | * 'cfm'. | |
e7934396 | 1141 | * |
892815f5 | 1142 | * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */ |
e7934396 | 1143 | void |
4e022ec0 | 1144 | ofproto_port_set_cfm(struct ofproto *ofproto, ofp_port_t ofp_port, |
a5610457 | 1145 | const struct cfm_settings *s) |
e7934396 BP |
1146 | { |
1147 | struct ofport *ofport; | |
abe529af | 1148 | int error; |
e7934396 | 1149 | |
abe529af | 1150 | ofport = ofproto_get_port(ofproto, ofp_port); |
e7934396 | 1151 | if (!ofport) { |
892815f5 BP |
1152 | VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16, |
1153 | ofproto->name, ofp_port); | |
e7934396 BP |
1154 | return; |
1155 | } | |
1156 | ||
93b8df38 EJ |
1157 | /* XXX: For configuration simplicity, we only support one remote_mpid |
1158 | * outside of the CFM module. It's not clear if this is the correct long | |
1159 | * term solution or not. */ | |
abe529af | 1160 | error = (ofproto->ofproto_class->set_cfm |
a5610457 | 1161 | ? ofproto->ofproto_class->set_cfm(ofport, s) |
abe529af BP |
1162 | : EOPNOTSUPP); |
1163 | if (error) { | |
1164 | VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed (%s)", | |
1165 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
10a89ef0 | 1166 | ovs_strerror(error)); |
e7934396 | 1167 | } |
e7934396 | 1168 | } |
e7934396 | 1169 | |
ccc09689 EJ |
1170 | /* Configures BFD on 'ofp_port' in 'ofproto'. This function has no effect if |
1171 | * 'ofproto' does not have a port 'ofp_port'. */ | |
1172 | void | |
4e022ec0 | 1173 | ofproto_port_set_bfd(struct ofproto *ofproto, ofp_port_t ofp_port, |
ccc09689 EJ |
1174 | const struct smap *cfg) |
1175 | { | |
1176 | struct ofport *ofport; | |
1177 | int error; | |
1178 | ||
1179 | ofport = ofproto_get_port(ofproto, ofp_port); | |
1180 | if (!ofport) { | |
1181 | VLOG_WARN("%s: cannot configure bfd on nonexistent port %"PRIu16, | |
1182 | ofproto->name, ofp_port); | |
e8999bdc | 1183 | return; |
ccc09689 EJ |
1184 | } |
1185 | ||
1186 | error = (ofproto->ofproto_class->set_bfd | |
1187 | ? ofproto->ofproto_class->set_bfd(ofport, cfg) | |
1188 | : EOPNOTSUPP); | |
1189 | if (error) { | |
1190 | VLOG_WARN("%s: bfd configuration on port %"PRIu16" (%s) failed (%s)", | |
1191 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
10a89ef0 | 1192 | ovs_strerror(error)); |
ccc09689 EJ |
1193 | } |
1194 | } | |
1195 | ||
8f5514fe AW |
1196 | /* Checks the status change of BFD on 'ofport'. |
1197 | * | |
1198 | * Returns true if 'ofproto_class' does not support 'bfd_status_changed'. */ | |
1199 | bool | |
1200 | ofproto_port_bfd_status_changed(struct ofproto *ofproto, ofp_port_t ofp_port) | |
1201 | { | |
1202 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1203 | return (ofport && ofproto->ofproto_class->bfd_status_changed | |
1204 | ? ofproto->ofproto_class->bfd_status_changed(ofport) | |
1205 | : true); | |
1206 | } | |
1207 | ||
88bf179a | 1208 | /* Populates 'status' with the status of BFD on 'ofport'. Returns 0 on |
8f5514fe AW |
1209 | * success. Returns a positive errno otherwise. Has no effect if 'ofp_port' |
1210 | * is not an OpenFlow port in 'ofproto'. | |
88bf179a AW |
1211 | * |
1212 | * The caller must provide and own '*status'. */ | |
ccc09689 | 1213 | int |
4e022ec0 | 1214 | ofproto_port_get_bfd_status(struct ofproto *ofproto, ofp_port_t ofp_port, |
ccc09689 EJ |
1215 | struct smap *status) |
1216 | { | |
1217 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1218 | return (ofport && ofproto->ofproto_class->get_bfd_status | |
1219 | ? ofproto->ofproto_class->get_bfd_status(ofport, status) | |
1220 | : EOPNOTSUPP); | |
1221 | } | |
1222 | ||
fa066f01 BP |
1223 | /* Checks the status of LACP negotiation for 'ofp_port' within ofproto. |
1224 | * Returns 1 if LACP partner information for 'ofp_port' is up-to-date, | |
1225 | * 0 if LACP partner information is not current (generally indicating a | |
1226 | * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */ | |
1227 | int | |
4e022ec0 | 1228 | ofproto_port_is_lacp_current(struct ofproto *ofproto, ofp_port_t ofp_port) |
fa066f01 | 1229 | { |
abe529af BP |
1230 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1231 | return (ofport && ofproto->ofproto_class->port_is_lacp_current | |
1232 | ? ofproto->ofproto_class->port_is_lacp_current(ofport) | |
fa066f01 | 1233 | : -1); |
e7934396 | 1234 | } |
50b9699f NM |
1235 | |
1236 | int | |
1237 | ofproto_port_get_lacp_stats(const struct ofport *port, struct lacp_slave_stats *stats) | |
1238 | { | |
1239 | struct ofproto *ofproto = port->ofproto; | |
1240 | int error; | |
1241 | ||
1242 | if (ofproto->ofproto_class->port_get_lacp_stats) { | |
1243 | error = ofproto->ofproto_class->port_get_lacp_stats(port, stats); | |
1244 | } else { | |
1245 | error = EOPNOTSUPP; | |
1246 | } | |
1247 | ||
1248 | return error; | |
1249 | } | |
e7934396 | 1250 | \f |
fa066f01 | 1251 | /* Bundles. */ |
e7934396 | 1252 | |
abe529af BP |
1253 | /* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'. |
1254 | * A bundle is the same concept as a Port in OVSDB, that is, it consists of one | |
1255 | * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN | |
1256 | * configuration plus, if there is more than one slave, a bonding | |
1257 | * configuration. | |
1258 | * | |
1259 | * If 'aux' is already registered then this function updates its configuration | |
1260 | * to 's'. Otherwise, this function registers a new bundle. | |
1261 | * | |
1262 | * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL | |
1263 | * port. */ | |
1264 | int | |
1265 | ofproto_bundle_register(struct ofproto *ofproto, void *aux, | |
1266 | const struct ofproto_bundle_settings *s) | |
fa066f01 | 1267 | { |
abe529af BP |
1268 | return (ofproto->ofproto_class->bundle_set |
1269 | ? ofproto->ofproto_class->bundle_set(ofproto, aux, s) | |
1270 | : EOPNOTSUPP); | |
fa066f01 BP |
1271 | } |
1272 | ||
abe529af BP |
1273 | /* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'. |
1274 | * If no such bundle has been registered, this has no effect. */ | |
1275 | int | |
1276 | ofproto_bundle_unregister(struct ofproto *ofproto, void *aux) | |
e7934396 | 1277 | { |
abe529af | 1278 | return ofproto_bundle_register(ofproto, aux, NULL); |
e7934396 | 1279 | } |
fa066f01 | 1280 | |
e7934396 | 1281 | \f |
abe529af BP |
1282 | /* Registers a mirror associated with client data pointer 'aux' in 'ofproto'. |
1283 | * If 'aux' is already registered then this function updates its configuration | |
c06bba01 | 1284 | * to 's'. Otherwise, this function registers a new mirror. */ |
abe529af BP |
1285 | int |
1286 | ofproto_mirror_register(struct ofproto *ofproto, void *aux, | |
1287 | const struct ofproto_mirror_settings *s) | |
064af421 | 1288 | { |
abe529af BP |
1289 | return (ofproto->ofproto_class->mirror_set |
1290 | ? ofproto->ofproto_class->mirror_set(ofproto, aux, s) | |
1291 | : EOPNOTSUPP); | |
064af421 BP |
1292 | } |
1293 | ||
abe529af BP |
1294 | /* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'. |
1295 | * If no mirror has been registered, this has no effect. */ | |
1296 | int | |
1297 | ofproto_mirror_unregister(struct ofproto *ofproto, void *aux) | |
064af421 | 1298 | { |
abe529af | 1299 | return ofproto_mirror_register(ofproto, aux, NULL); |
064af421 BP |
1300 | } |
1301 | ||
9d24de3b JP |
1302 | /* Retrieves statistics from mirror associated with client data pointer |
1303 | * 'aux' in 'ofproto'. Stores packet and byte counts in 'packets' and | |
1304 | * 'bytes', respectively. If a particular counters is not supported, | |
0477baa9 DF |
1305 | * the appropriate argument is set to UINT64_MAX. |
1306 | */ | |
9d24de3b JP |
1307 | int |
1308 | ofproto_mirror_get_stats(struct ofproto *ofproto, void *aux, | |
1309 | uint64_t *packets, uint64_t *bytes) | |
1310 | { | |
1311 | if (!ofproto->ofproto_class->mirror_get_stats) { | |
1312 | *packets = *bytes = UINT64_MAX; | |
1313 | return EOPNOTSUPP; | |
1314 | } | |
1315 | ||
1316 | return ofproto->ofproto_class->mirror_get_stats(ofproto, aux, | |
1317 | packets, bytes); | |
1318 | } | |
1319 | ||
abe529af BP |
1320 | /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on |
1321 | * which all packets are flooded, instead of using MAC learning. If | |
1322 | * 'flood_vlans' is NULL, then MAC learning applies to all VLANs. | |
1323 | * | |
1324 | * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL | |
1325 | * port. */ | |
1326 | int | |
1327 | ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans) | |
abdfe474 | 1328 | { |
abe529af BP |
1329 | return (ofproto->ofproto_class->set_flood_vlans |
1330 | ? ofproto->ofproto_class->set_flood_vlans(ofproto, flood_vlans) | |
1331 | : EOPNOTSUPP); | |
abdfe474 JP |
1332 | } |
1333 | ||
abe529af BP |
1334 | /* Returns true if 'aux' is a registered bundle that is currently in use as the |
1335 | * output for a mirror. */ | |
1336 | bool | |
b4affc74 | 1337 | ofproto_is_mirror_output_bundle(const struct ofproto *ofproto, void *aux) |
abe529af BP |
1338 | { |
1339 | return (ofproto->ofproto_class->is_mirror_output_bundle | |
1340 | ? ofproto->ofproto_class->is_mirror_output_bundle(ofproto, aux) | |
1341 | : false); | |
1342 | } | |
1343 | \f | |
254750ce BP |
1344 | /* Configuration of OpenFlow tables. */ |
1345 | ||
1346 | /* Returns the number of OpenFlow tables in 'ofproto'. */ | |
1347 | int | |
1348 | ofproto_get_n_tables(const struct ofproto *ofproto) | |
1349 | { | |
1350 | return ofproto->n_tables; | |
1351 | } | |
1352 | ||
adcf00ba AZ |
1353 | /* Returns the number of Controller visible OpenFlow tables |
1354 | * in 'ofproto'. This number will exclude Hidden tables. | |
1355 | * This funtion's return value should be less or equal to that of | |
1356 | * ofproto_get_n_tables() . */ | |
1357 | uint8_t | |
1358 | ofproto_get_n_visible_tables(const struct ofproto *ofproto) | |
1359 | { | |
1360 | uint8_t n = ofproto->n_tables; | |
1361 | ||
1362 | /* Count only non-hidden tables in the number of tables. (Hidden tables, | |
1363 | * if present, are always at the end.) */ | |
1364 | while(n && (ofproto->tables[n - 1].flags & OFTABLE_HIDDEN)) { | |
1365 | n--; | |
1366 | } | |
1367 | ||
1368 | return n; | |
1369 | } | |
1370 | ||
254750ce BP |
1371 | /* Configures the OpenFlow table in 'ofproto' with id 'table_id' with the |
1372 | * settings from 's'. 'table_id' must be in the range 0 through the number of | |
1373 | * OpenFlow tables in 'ofproto' minus 1, inclusive. | |
1374 | * | |
1375 | * For read-only tables, only the name may be configured. */ | |
1376 | void | |
1377 | ofproto_configure_table(struct ofproto *ofproto, int table_id, | |
1378 | const struct ofproto_table_settings *s) | |
1379 | { | |
1380 | struct oftable *table; | |
1381 | ||
cb22974d | 1382 | ovs_assert(table_id >= 0 && table_id < ofproto->n_tables); |
254750ce BP |
1383 | table = &ofproto->tables[table_id]; |
1384 | ||
1385 | oftable_set_name(table, s->name); | |
1386 | ||
1387 | if (table->flags & OFTABLE_READONLY) { | |
1388 | return; | |
1389 | } | |
1390 | ||
1391 | if (s->groups) { | |
1392 | oftable_enable_eviction(table, s->groups, s->n_groups); | |
1393 | } else { | |
1394 | oftable_disable_eviction(table); | |
1395 | } | |
1396 | ||
1397 | table->max_flows = s->max_flows; | |
afae68b1 | 1398 | |
f358a2cb JR |
1399 | if (classifier_set_prefix_fields(&table->cls, |
1400 | s->prefix_fields, s->n_prefix_fields)) { | |
1401 | /* XXX: Trigger revalidation. */ | |
1402 | } | |
834fe5cb BP |
1403 | |
1404 | ovs_mutex_lock(&ofproto_mutex); | |
1405 | evict_rules_from_table(table, 0); | |
1406 | ovs_mutex_unlock(&ofproto_mutex); | |
254750ce BP |
1407 | } |
1408 | \f | |
81e2083f BP |
1409 | bool |
1410 | ofproto_has_snoops(const struct ofproto *ofproto) | |
1411 | { | |
1412 | return connmgr_has_snoops(ofproto->connmgr); | |
1413 | } | |
1414 | ||
064af421 | 1415 | void |
81e2083f | 1416 | ofproto_get_snoops(const struct ofproto *ofproto, struct sset *snoops) |
064af421 | 1417 | { |
19a87e36 | 1418 | connmgr_get_snoops(ofproto->connmgr, snoops); |
064af421 BP |
1419 | } |
1420 | ||
a73fcd71 | 1421 | /* Deletes 'rule' from 'ofproto'. |
8037acb4 | 1422 | * |
b74cb5d8 BP |
1423 | * Within an ofproto implementation, this function allows an ofproto |
1424 | * implementation to destroy any rules that remain when its ->destruct() | |
1425 | * function is called. This function is not suitable for use elsewhere in an | |
1426 | * ofproto implementation. | |
1427 | * | |
b74cb5d8 | 1428 | * This function implements steps 4.4 and 4.5 in the section titled "Rule Life |
8b81d1ef | 1429 | * Cycle" in ofproto-provider.h. */ |
b74cb5d8 | 1430 | void |
8b81d1ef | 1431 | ofproto_rule_delete(struct ofproto *ofproto, struct rule *rule) |
15aaf599 | 1432 | OVS_EXCLUDED(ofproto_mutex) |
7ee20df1 | 1433 | { |
834fe5cb BP |
1434 | /* This skips the ofmonitor and flow-removed notifications because the |
1435 | * switch is being deleted and any OpenFlow channels have been or soon will | |
1436 | * be killed. */ | |
15aaf599 | 1437 | ovs_mutex_lock(&ofproto_mutex); |
802f84ff | 1438 | oftable_remove_rule(rule); |
8037acb4 | 1439 | ofproto->ofproto_class->rule_delete(rule); |
15aaf599 | 1440 | ovs_mutex_unlock(&ofproto_mutex); |
8037acb4 BP |
1441 | } |
1442 | ||
1443 | static void | |
1444 | ofproto_flush__(struct ofproto *ofproto) | |
15aaf599 | 1445 | OVS_EXCLUDED(ofproto_mutex) |
8037acb4 | 1446 | { |
d0918789 | 1447 | struct oftable *table; |
7ee20df1 | 1448 | |
3948503a | 1449 | /* This will flush all datapath flows. */ |
7ee20df1 BP |
1450 | if (ofproto->ofproto_class->flush) { |
1451 | ofproto->ofproto_class->flush(ofproto); | |
1452 | } | |
1453 | ||
3948503a JR |
1454 | /* XXX: There is a small race window here, where new datapath flows can be |
1455 | * created by upcall handlers based on the existing flow table. We can not | |
1456 | * call ofproto class flush while holding 'ofproto_mutex' to prevent this, | |
1457 | * as then we could deadlock on syncing with the handler threads waiting on | |
1458 | * the same mutex. */ | |
1459 | ||
15aaf599 | 1460 | ovs_mutex_lock(&ofproto_mutex); |
b772ded8 | 1461 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
802f84ff | 1462 | struct rule_collection rules; |
78c8df12 | 1463 | struct rule *rule; |
7ee20df1 | 1464 | |
5c67e4af BP |
1465 | if (table->flags & OFTABLE_HIDDEN) { |
1466 | continue; | |
1467 | } | |
1468 | ||
802f84ff JR |
1469 | rule_collection_init(&rules); |
1470 | ||
de4ad4a2 | 1471 | CLS_FOR_EACH (rule, cr, &table->cls) { |
802f84ff | 1472 | rule_collection_add(&rules, rule); |
7ee20df1 | 1473 | } |
802f84ff JR |
1474 | delete_flows__(&rules, OFPRR_DELETE, NULL); |
1475 | rule_collection_destroy(&rules); | |
7ee20df1 | 1476 | } |
3948503a JR |
1477 | /* XXX: Concurrent handler threads may insert new learned flows based on |
1478 | * learn actions of the now deleted flows right after we release | |
1479 | * 'ofproto_mutex'. */ | |
15aaf599 | 1480 | ovs_mutex_unlock(&ofproto_mutex); |
7ee20df1 BP |
1481 | } |
1482 | ||
7395c052 NZ |
1483 | static void delete_group(struct ofproto *ofproto, uint32_t group_id); |
1484 | ||
abe529af BP |
1485 | static void |
1486 | ofproto_destroy__(struct ofproto *ofproto) | |
15aaf599 | 1487 | OVS_EXCLUDED(ofproto_mutex) |
abe529af | 1488 | { |
d0918789 | 1489 | struct oftable *table; |
6c1491fb | 1490 | |
35412852 | 1491 | destroy_rule_executes(ofproto); |
7395c052 | 1492 | delete_group(ofproto, OFPG_ALL); |
5c09b672 GS |
1493 | |
1494 | guarded_list_destroy(&ofproto->rule_executes); | |
7395c052 NZ |
1495 | ovs_rwlock_destroy(&ofproto->groups_rwlock); |
1496 | hmap_destroy(&ofproto->groups); | |
1497 | ||
abe529af BP |
1498 | hmap_remove(&all_ofprotos, &ofproto->hmap_node); |
1499 | free(ofproto->name); | |
955a7127 | 1500 | free(ofproto->type); |
abe529af BP |
1501 | free(ofproto->mfr_desc); |
1502 | free(ofproto->hw_desc); | |
1503 | free(ofproto->sw_desc); | |
1504 | free(ofproto->serial_desc); | |
1505 | free(ofproto->dp_desc); | |
abe529af | 1506 | hmap_destroy(&ofproto->ports); |
fdcea803 | 1507 | hmap_destroy(&ofproto->ofport_usage); |
abe529af | 1508 | shash_destroy(&ofproto->port_by_name); |
e1b1d06a | 1509 | simap_destroy(&ofproto->ofp_requests); |
6c1491fb | 1510 | |
b772ded8 | 1511 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
d0918789 | 1512 | oftable_destroy(table); |
6c1491fb BP |
1513 | } |
1514 | free(ofproto->tables); | |
fa066f01 | 1515 | |
1406c79b BP |
1516 | ovs_assert(hindex_is_empty(&ofproto->cookies)); |
1517 | hindex_destroy(&ofproto->cookies); | |
1518 | ||
35f48b8b BP |
1519 | ovs_assert(hmap_is_empty(&ofproto->learned_cookies)); |
1520 | hmap_destroy(&ofproto->learned_cookies); | |
1521 | ||
52a90c29 BP |
1522 | free(ofproto->vlan_bitmap); |
1523 | ||
abe529af BP |
1524 | ofproto->ofproto_class->dealloc(ofproto); |
1525 | } | |
fa066f01 | 1526 | |
064af421 BP |
1527 | void |
1528 | ofproto_destroy(struct ofproto *p) | |
15aaf599 | 1529 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 1530 | { |
ca0f572c | 1531 | struct ofport *ofport, *next_ofport; |
fdcea803 | 1532 | struct ofport_usage *usage, *next_usage; |
064af421 BP |
1533 | |
1534 | if (!p) { | |
1535 | return; | |
1536 | } | |
1537 | ||
717de9ff JR |
1538 | if (p->meters) { |
1539 | meter_delete(p, 1, p->meter_features.max_meters); | |
1540 | p->meter_features.max_meters = 0; | |
1541 | free(p->meters); | |
1542 | p->meters = NULL; | |
1543 | } | |
1544 | ||
7ee20df1 | 1545 | ofproto_flush__(p); |
4e8e4213 | 1546 | HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) { |
abe529af | 1547 | ofport_destroy(ofport); |
064af421 | 1548 | } |
064af421 | 1549 | |
fdcea803 GS |
1550 | HMAP_FOR_EACH_SAFE (usage, next_usage, hmap_node, &p->ofport_usage) { |
1551 | hmap_remove(&p->ofport_usage, &usage->hmap_node); | |
1552 | free(usage); | |
1553 | } | |
1554 | ||
abe529af | 1555 | p->ofproto_class->destruct(p); |
58f19539 DDP |
1556 | |
1557 | /* We should not postpone this because it involves deleting a listening | |
1558 | * socket which we may want to reopen soon. 'connmgr' should not be used | |
1559 | * by other threads */ | |
1560 | connmgr_destroy(p->connmgr); | |
1561 | ||
f416c8d6 JR |
1562 | /* Destroying rules is deferred, must have 'ofproto' around for them. */ |
1563 | ovsrcu_postpone(ofproto_destroy__, p); | |
064af421 BP |
1564 | } |
1565 | ||
abe529af BP |
1566 | /* Destroys the datapath with the respective 'name' and 'type'. With the Linux |
1567 | * kernel datapath, for example, this destroys the datapath in the kernel, and | |
1568 | * with the netdev-based datapath, it tears down the data structures that | |
1569 | * represent the datapath. | |
1570 | * | |
1571 | * The datapath should not be currently open as an ofproto. */ | |
064af421 | 1572 | int |
abe529af | 1573 | ofproto_delete(const char *name, const char *type) |
064af421 | 1574 | { |
abe529af BP |
1575 | const struct ofproto_class *class = ofproto_class_find__(type); |
1576 | return (!class ? EAFNOSUPPORT | |
1577 | : !class->del ? EACCES | |
1578 | : class->del(type, name)); | |
064af421 BP |
1579 | } |
1580 | ||
e9e28be3 BP |
1581 | static void |
1582 | process_port_change(struct ofproto *ofproto, int error, char *devname) | |
1583 | { | |
1584 | if (error == ENOBUFS) { | |
1585 | reinit_ports(ofproto); | |
1586 | } else if (!error) { | |
1587 | update_port(ofproto, devname); | |
1588 | free(devname); | |
1589 | } | |
1590 | } | |
1591 | ||
11a574a7 JP |
1592 | int |
1593 | ofproto_type_run(const char *datapath_type) | |
1594 | { | |
1595 | const struct ofproto_class *class; | |
1596 | int error; | |
1597 | ||
1598 | datapath_type = ofproto_normalize_type(datapath_type); | |
1599 | class = ofproto_class_find__(datapath_type); | |
1600 | ||
1601 | error = class->type_run ? class->type_run(datapath_type) : 0; | |
1602 | if (error && error != EAGAIN) { | |
1603 | VLOG_ERR_RL(&rl, "%s: type_run failed (%s)", | |
10a89ef0 | 1604 | datapath_type, ovs_strerror(error)); |
11a574a7 JP |
1605 | } |
1606 | return error; | |
1607 | } | |
1608 | ||
11a574a7 JP |
1609 | void |
1610 | ofproto_type_wait(const char *datapath_type) | |
1611 | { | |
1612 | const struct ofproto_class *class; | |
1613 | ||
1614 | datapath_type = ofproto_normalize_type(datapath_type); | |
1615 | class = ofproto_class_find__(datapath_type); | |
1616 | ||
1617 | if (class->type_wait) { | |
1618 | class->type_wait(datapath_type); | |
1619 | } | |
1620 | } | |
1621 | ||
064af421 | 1622 | int |
abe529af | 1623 | ofproto_run(struct ofproto *p) |
064af421 | 1624 | { |
064af421 | 1625 | int error; |
da4a6191 | 1626 | uint64_t new_seq; |
064af421 | 1627 | |
abe529af | 1628 | error = p->ofproto_class->run(p); |
5fcc0d00 | 1629 | if (error && error != EAGAIN) { |
10a89ef0 | 1630 | VLOG_ERR_RL(&rl, "%s: run failed (%s)", p->name, ovs_strerror(error)); |
149f577a JG |
1631 | } |
1632 | ||
35412852 BP |
1633 | run_rule_executes(p); |
1634 | ||
448c2fa8 EJ |
1635 | /* Restore the eviction group heap invariant occasionally. */ |
1636 | if (p->eviction_group_timer < time_msec()) { | |
1637 | size_t i; | |
1638 | ||
1639 | p->eviction_group_timer = time_msec() + 1000; | |
1640 | ||
1641 | for (i = 0; i < p->n_tables; i++) { | |
1642 | struct oftable *table = &p->tables[i]; | |
1643 | struct eviction_group *evg; | |
448c2fa8 EJ |
1644 | struct rule *rule; |
1645 | ||
1646 | if (!table->eviction_fields) { | |
1647 | continue; | |
1648 | } | |
1649 | ||
1a9bb326 EJ |
1650 | if (classifier_count(&table->cls) > 100000) { |
1651 | static struct vlog_rate_limit count_rl = | |
1652 | VLOG_RATE_LIMIT_INIT(1, 1); | |
1653 | VLOG_WARN_RL(&count_rl, "Table %"PRIuSIZE" has an excessive" | |
1654 | " number of rules: %d", i, | |
1655 | classifier_count(&table->cls)); | |
1656 | } | |
1657 | ||
15aaf599 | 1658 | ovs_mutex_lock(&ofproto_mutex); |
5f0476ce | 1659 | CLS_FOR_EACH (rule, cr, &table->cls) { |
6d56c1f1 K |
1660 | if (rule->idle_timeout || rule->hard_timeout) { |
1661 | if (!rule->eviction_group) { | |
1662 | eviction_group_add_rule(rule); | |
1663 | } else { | |
1664 | heap_raw_change(&rule->evg_node, | |
1665 | rule_eviction_priority(p, rule)); | |
1666 | } | |
448c2fa8 EJ |
1667 | } |
1668 | } | |
6d56c1f1 K |
1669 | |
1670 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { | |
1671 | heap_rebuild(&evg->rules); | |
1672 | } | |
15aaf599 | 1673 | ovs_mutex_unlock(&ofproto_mutex); |
448c2fa8 EJ |
1674 | } |
1675 | } | |
1676 | ||
5bf0e941 | 1677 | if (p->ofproto_class->port_poll) { |
7436ed80 BP |
1678 | char *devname; |
1679 | ||
5bf0e941 BP |
1680 | while ((error = p->ofproto_class->port_poll(p, &devname)) != EAGAIN) { |
1681 | process_port_change(p, error, devname); | |
064af421 | 1682 | } |
e9e28be3 | 1683 | } |
031d8bff | 1684 | |
da4a6191 JS |
1685 | new_seq = seq_read(connectivity_seq_get()); |
1686 | if (new_seq != p->change_seq) { | |
1687 | struct sset devnames; | |
1688 | const char *devname; | |
1689 | struct ofport *ofport; | |
1690 | ||
1691 | /* Update OpenFlow port status for any port whose netdev has changed. | |
1692 | * | |
1693 | * Refreshing a given 'ofport' can cause an arbitrary ofport to be | |
1694 | * destroyed, so it's not safe to update ports directly from the | |
1695 | * HMAP_FOR_EACH loop, or even to use HMAP_FOR_EACH_SAFE. Instead, we | |
1696 | * need this two-phase approach. */ | |
1697 | sset_init(&devnames); | |
1698 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
61501798 AW |
1699 | uint64_t port_change_seq; |
1700 | ||
1701 | port_change_seq = netdev_get_change_seq(ofport->netdev); | |
1702 | if (ofport->change_seq != port_change_seq) { | |
1703 | ofport->change_seq = port_change_seq; | |
1704 | sset_add(&devnames, netdev_get_name(ofport->netdev)); | |
1705 | } | |
031d8bff | 1706 | } |
da4a6191 JS |
1707 | SSET_FOR_EACH (devname, &devnames) { |
1708 | update_port(p, devname); | |
1709 | } | |
1710 | sset_destroy(&devnames); | |
1711 | ||
1712 | p->change_seq = new_seq; | |
064af421 BP |
1713 | } |
1714 | ||
834fe5cb | 1715 | connmgr_run(p->connmgr, handle_openflow); |
064af421 | 1716 | |
5fcc0d00 BP |
1717 | return error; |
1718 | } | |
1719 | ||
064af421 BP |
1720 | void |
1721 | ofproto_wait(struct ofproto *p) | |
1722 | { | |
abe529af | 1723 | p->ofproto_class->wait(p); |
5bf0e941 BP |
1724 | if (p->ofproto_class->port_poll_wait) { |
1725 | p->ofproto_class->port_poll_wait(p); | |
e7934396 | 1726 | } |
da4a6191 | 1727 | seq_wait(connectivity_seq_get(), p->change_seq); |
834fe5cb | 1728 | connmgr_wait(p->connmgr); |
064af421 BP |
1729 | } |
1730 | ||
064af421 BP |
1731 | bool |
1732 | ofproto_is_alive(const struct ofproto *p) | |
1733 | { | |
19a87e36 | 1734 | return connmgr_has_controllers(p->connmgr); |
064af421 BP |
1735 | } |
1736 | ||
0d085684 BP |
1737 | /* Adds some memory usage statistics for 'ofproto' into 'usage', for use with |
1738 | * memory_report(). */ | |
1739 | void | |
1740 | ofproto_get_memory_usage(const struct ofproto *ofproto, struct simap *usage) | |
1741 | { | |
1742 | const struct oftable *table; | |
1743 | unsigned int n_rules; | |
1744 | ||
1745 | simap_increase(usage, "ports", hmap_count(&ofproto->ports)); | |
15aaf599 | 1746 | |
0d085684 BP |
1747 | n_rules = 0; |
1748 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
1749 | n_rules += classifier_count(&table->cls); | |
1750 | } | |
1751 | simap_increase(usage, "rules", n_rules); | |
1752 | ||
1753 | if (ofproto->ofproto_class->get_memory_usage) { | |
1754 | ofproto->ofproto_class->get_memory_usage(ofproto, usage); | |
1755 | } | |
1756 | ||
1757 | connmgr_get_memory_usage(ofproto->connmgr, usage); | |
1758 | } | |
1759 | ||
1c030aa5 EJ |
1760 | void |
1761 | ofproto_type_get_memory_usage(const char *datapath_type, struct simap *usage) | |
1762 | { | |
1763 | const struct ofproto_class *class; | |
1764 | ||
1765 | datapath_type = ofproto_normalize_type(datapath_type); | |
1766 | class = ofproto_class_find__(datapath_type); | |
1767 | ||
1768 | if (class && class->type_get_memory_usage) { | |
1769 | class->type_get_memory_usage(datapath_type, usage); | |
1770 | } | |
1771 | } | |
1772 | ||
bffc0589 | 1773 | void |
2cdcb898 | 1774 | ofproto_get_ofproto_controller_info(const struct ofproto *ofproto, |
bffc0589 AE |
1775 | struct shash *info) |
1776 | { | |
19a87e36 | 1777 | connmgr_get_controller_info(ofproto->connmgr, info); |
bffc0589 AE |
1778 | } |
1779 | ||
1780 | void | |
1781 | ofproto_free_ofproto_controller_info(struct shash *info) | |
1782 | { | |
72ba2ed3 | 1783 | connmgr_free_controller_info(info); |
bffc0589 AE |
1784 | } |
1785 | ||
b5827b24 BP |
1786 | /* Makes a deep copy of 'old' into 'port'. */ |
1787 | void | |
1788 | ofproto_port_clone(struct ofproto_port *port, const struct ofproto_port *old) | |
1789 | { | |
1790 | port->name = xstrdup(old->name); | |
1791 | port->type = xstrdup(old->type); | |
1792 | port->ofp_port = old->ofp_port; | |
1793 | } | |
1794 | ||
1795 | /* Frees memory allocated to members of 'ofproto_port'. | |
3a6ccc8c | 1796 | * |
b5827b24 BP |
1797 | * Do not call this function on an ofproto_port obtained from |
1798 | * ofproto_port_dump_next(): that function retains ownership of the data in the | |
1799 | * ofproto_port. */ | |
1800 | void | |
1801 | ofproto_port_destroy(struct ofproto_port *ofproto_port) | |
1802 | { | |
1803 | free(ofproto_port->name); | |
1804 | free(ofproto_port->type); | |
1805 | } | |
1806 | ||
b5827b24 | 1807 | /* Initializes 'dump' to begin dumping the ports in an ofproto. |
3a6ccc8c | 1808 | * |
b5827b24 BP |
1809 | * This function provides no status indication. An error status for the entire |
1810 | * dump operation is provided when it is completed by calling | |
1811 | * ofproto_port_dump_done(). | |
1812 | */ | |
1813 | void | |
1814 | ofproto_port_dump_start(struct ofproto_port_dump *dump, | |
1815 | const struct ofproto *ofproto) | |
1816 | { | |
abe529af BP |
1817 | dump->ofproto = ofproto; |
1818 | dump->error = ofproto->ofproto_class->port_dump_start(ofproto, | |
1819 | &dump->state); | |
b5827b24 BP |
1820 | } |
1821 | ||
1822 | /* Attempts to retrieve another port from 'dump', which must have been created | |
1823 | * with ofproto_port_dump_start(). On success, stores a new ofproto_port into | |
1824 | * 'port' and returns true. On failure, returns false. | |
1825 | * | |
1826 | * Failure might indicate an actual error or merely that the last port has been | |
1827 | * dumped. An error status for the entire dump operation is provided when it | |
1828 | * is completed by calling ofproto_port_dump_done(). | |
1829 | * | |
1830 | * The ofproto owns the data stored in 'port'. It will remain valid until at | |
1831 | * least the next time 'dump' is passed to ofproto_port_dump_next() or | |
1832 | * ofproto_port_dump_done(). */ | |
1833 | bool | |
1834 | ofproto_port_dump_next(struct ofproto_port_dump *dump, | |
1835 | struct ofproto_port *port) | |
1836 | { | |
abe529af BP |
1837 | const struct ofproto *ofproto = dump->ofproto; |
1838 | ||
1839 | if (dump->error) { | |
1840 | return false; | |
1841 | } | |
b5827b24 | 1842 | |
abe529af BP |
1843 | dump->error = ofproto->ofproto_class->port_dump_next(ofproto, dump->state, |
1844 | port); | |
1845 | if (dump->error) { | |
1846 | ofproto->ofproto_class->port_dump_done(ofproto, dump->state); | |
1847 | return false; | |
b5827b24 | 1848 | } |
abe529af | 1849 | return true; |
b5827b24 BP |
1850 | } |
1851 | ||
1852 | /* Completes port table dump operation 'dump', which must have been created | |
1853 | * with ofproto_port_dump_start(). Returns 0 if the dump operation was | |
1854 | * error-free, otherwise a positive errno value describing the problem. */ | |
3a6ccc8c | 1855 | int |
b5827b24 | 1856 | ofproto_port_dump_done(struct ofproto_port_dump *dump) |
3a6ccc8c | 1857 | { |
abe529af BP |
1858 | const struct ofproto *ofproto = dump->ofproto; |
1859 | if (!dump->error) { | |
1860 | dump->error = ofproto->ofproto_class->port_dump_done(ofproto, | |
1861 | dump->state); | |
1862 | } | |
1863 | return dump->error == EOF ? 0 : dump->error; | |
b5827b24 BP |
1864 | } |
1865 | ||
0aeaabc8 JP |
1866 | /* Returns the type to pass to netdev_open() when a datapath of type |
1867 | * 'datapath_type' has a port of type 'port_type', for a few special | |
1868 | * cases when a netdev type differs from a port type. For example, when | |
1869 | * using the userspace datapath, a port of type "internal" needs to be | |
1870 | * opened as "tap". | |
1871 | * | |
1872 | * Returns either 'type' itself or a string literal, which must not be | |
1873 | * freed. */ | |
1874 | const char * | |
1875 | ofproto_port_open_type(const char *datapath_type, const char *port_type) | |
1876 | { | |
1877 | const struct ofproto_class *class; | |
1878 | ||
1879 | datapath_type = ofproto_normalize_type(datapath_type); | |
1880 | class = ofproto_class_find__(datapath_type); | |
1881 | if (!class) { | |
1882 | return port_type; | |
1883 | } | |
1884 | ||
1885 | return (class->port_open_type | |
1886 | ? class->port_open_type(datapath_type, port_type) | |
1887 | : port_type); | |
1888 | } | |
1889 | ||
81816a5f JP |
1890 | /* Attempts to add 'netdev' as a port on 'ofproto'. If 'ofp_portp' is |
1891 | * non-null and '*ofp_portp' is not OFPP_NONE, attempts to use that as | |
1892 | * the port's OpenFlow port number. | |
1893 | * | |
1894 | * If successful, returns 0 and sets '*ofp_portp' to the new port's | |
1895 | * OpenFlow port number (if 'ofp_portp' is non-null). On failure, | |
1896 | * returns a positive errno value and sets '*ofp_portp' to OFPP_NONE (if | |
1897 | * 'ofp_portp' is non-null). */ | |
b5827b24 BP |
1898 | int |
1899 | ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev, | |
4e022ec0 | 1900 | ofp_port_t *ofp_portp) |
b5827b24 | 1901 | { |
4e022ec0 | 1902 | ofp_port_t ofp_port = ofp_portp ? *ofp_portp : OFPP_NONE; |
3a6ccc8c BP |
1903 | int error; |
1904 | ||
e1b1d06a | 1905 | error = ofproto->ofproto_class->port_add(ofproto, netdev); |
1fa24dea | 1906 | if (!error) { |
e1b1d06a JP |
1907 | const char *netdev_name = netdev_get_name(netdev); |
1908 | ||
4e022ec0 AW |
1909 | simap_put(&ofproto->ofp_requests, netdev_name, |
1910 | ofp_to_u16(ofp_port)); | |
e1b1d06a | 1911 | update_port(ofproto, netdev_name); |
1fa24dea | 1912 | } |
b5827b24 | 1913 | if (ofp_portp) { |
17f69db5 BP |
1914 | *ofp_portp = OFPP_NONE; |
1915 | if (!error) { | |
1916 | struct ofproto_port ofproto_port; | |
1917 | ||
1918 | error = ofproto_port_query_by_name(ofproto, | |
1919 | netdev_get_name(netdev), | |
1920 | &ofproto_port); | |
1921 | if (!error) { | |
1922 | *ofp_portp = ofproto_port.ofp_port; | |
1923 | ofproto_port_destroy(&ofproto_port); | |
1924 | } | |
1925 | } | |
3a6ccc8c BP |
1926 | } |
1927 | return error; | |
1928 | } | |
1929 | ||
b5827b24 BP |
1930 | /* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and |
1931 | * initializes '*port' appropriately; on failure, returns a positive errno | |
1932 | * value. | |
1933 | * | |
abe529af | 1934 | * The caller owns the data in 'ofproto_port' and must free it with |
b5827b24 BP |
1935 | * ofproto_port_destroy() when it is no longer needed. */ |
1936 | int | |
1937 | ofproto_port_query_by_name(const struct ofproto *ofproto, const char *devname, | |
1938 | struct ofproto_port *port) | |
a4e2e1f2 | 1939 | { |
b5827b24 BP |
1940 | int error; |
1941 | ||
abe529af BP |
1942 | error = ofproto->ofproto_class->port_query_by_name(ofproto, devname, port); |
1943 | if (error) { | |
1944 | memset(port, 0, sizeof *port); | |
b5827b24 BP |
1945 | } |
1946 | return error; | |
a4e2e1f2 EJ |
1947 | } |
1948 | ||
b5827b24 | 1949 | /* Deletes port number 'ofp_port' from the datapath for 'ofproto'. |
3a6ccc8c | 1950 | * Returns 0 if successful, otherwise a positive errno. */ |
064af421 | 1951 | int |
4e022ec0 | 1952 | ofproto_port_del(struct ofproto *ofproto, ofp_port_t ofp_port) |
064af421 | 1953 | { |
abe529af | 1954 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1264ec95 | 1955 | const char *name = ofport ? netdev_get_name(ofport->netdev) : "<unknown>"; |
e1b1d06a | 1956 | struct simap_node *ofp_request_node; |
3cf10406 | 1957 | int error; |
cdee00fd | 1958 | |
e1b1d06a JP |
1959 | ofp_request_node = simap_find(&ofproto->ofp_requests, name); |
1960 | if (ofp_request_node) { | |
1961 | simap_delete(&ofproto->ofp_requests, ofp_request_node); | |
1962 | } | |
1963 | ||
abe529af | 1964 | error = ofproto->ofproto_class->port_del(ofproto, ofp_port); |
892815f5 | 1965 | if (!error && ofport) { |
1264ec95 BP |
1966 | /* 'name' is the netdev's name and update_port() is going to close the |
1967 | * netdev. Just in case update_port() refers to 'name' after it | |
3a6ccc8c BP |
1968 | * destroys 'ofport', make a copy of it around the update_port() |
1969 | * call. */ | |
1970 | char *devname = xstrdup(name); | |
1971 | update_port(ofproto, devname); | |
1972 | free(devname); | |
3cf10406 BP |
1973 | } |
1974 | return error; | |
064af421 BP |
1975 | } |
1976 | ||
276f6518 SH |
1977 | static void |
1978 | flow_mod_init(struct ofputil_flow_mod *fm, | |
eb391b76 | 1979 | const struct match *match, int priority, |
276f6518 SH |
1980 | const struct ofpact *ofpacts, size_t ofpacts_len, |
1981 | enum ofp_flow_mod_command command) | |
1982 | { | |
1983 | memset(fm, 0, sizeof *fm); | |
1984 | fm->match = *match; | |
1985 | fm->priority = priority; | |
1986 | fm->cookie = 0; | |
1987 | fm->new_cookie = 0; | |
1988 | fm->modify_cookie = false; | |
1989 | fm->table_id = 0; | |
1990 | fm->command = command; | |
1991 | fm->idle_timeout = 0; | |
1992 | fm->hard_timeout = 0; | |
ca26eb44 | 1993 | fm->importance = 0; |
276f6518 SH |
1994 | fm->buffer_id = UINT32_MAX; |
1995 | fm->out_port = OFPP_ANY; | |
1996 | fm->out_group = OFPG_ANY; | |
1997 | fm->flags = 0; | |
1998 | fm->ofpacts = CONST_CAST(struct ofpact *, ofpacts); | |
1999 | fm->ofpacts_len = ofpacts_len; | |
cc40d06b | 2000 | fm->delete_reason = OFPRR_DELETE; |
276f6518 SH |
2001 | } |
2002 | ||
97f63e57 BP |
2003 | static int |
2004 | simple_flow_mod(struct ofproto *ofproto, | |
eb391b76 | 2005 | const struct match *match, int priority, |
97f63e57 BP |
2006 | const struct ofpact *ofpacts, size_t ofpacts_len, |
2007 | enum ofp_flow_mod_command command) | |
2008 | { | |
2009 | struct ofputil_flow_mod fm; | |
2010 | ||
276f6518 | 2011 | flow_mod_init(&fm, match, priority, ofpacts, ofpacts_len, command); |
15aaf599 | 2012 | |
baae3d02 | 2013 | return handle_flow_mod__(ofproto, &fm, NULL); |
97f63e57 BP |
2014 | } |
2015 | ||
6c1491fb | 2016 | /* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and |
fa8b054f BP |
2017 | * performs the 'n_actions' actions in 'actions'. The new flow will not |
2018 | * timeout. | |
2019 | * | |
2020 | * If cls_rule->priority is in the range of priorities supported by OpenFlow | |
2021 | * (0...65535, inclusive) then the flow will be visible to OpenFlow | |
2022 | * controllers; otherwise, it will be hidden. | |
2023 | * | |
f25d0cf3 | 2024 | * The caller retains ownership of 'cls_rule' and 'ofpacts'. |
6c1491fb BP |
2025 | * |
2026 | * This is a helper function for in-band control and fail-open. */ | |
064af421 | 2027 | void |
81a76618 | 2028 | ofproto_add_flow(struct ofproto *ofproto, const struct match *match, |
eb391b76 | 2029 | int priority, |
f25d0cf3 | 2030 | const struct ofpact *ofpacts, size_t ofpacts_len) |
15aaf599 | 2031 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 2032 | { |
7ee20df1 | 2033 | const struct rule *rule; |
6f00e29b | 2034 | bool must_add; |
7ee20df1 | 2035 | |
97f63e57 BP |
2036 | /* First do a cheap check whether the rule we're looking for already exists |
2037 | * with the actions that we want. If it does, then we're done. */ | |
81a76618 BP |
2038 | rule = rule_from_cls_rule(classifier_find_match_exactly( |
2039 | &ofproto->tables[0].cls, match, priority)); | |
6f00e29b | 2040 | if (rule) { |
dc723c44 | 2041 | const struct rule_actions *actions = rule_get_actions(rule); |
06a0f3e2 | 2042 | must_add = !ofpacts_equal(actions->ofpacts, actions->ofpacts_len, |
6f00e29b | 2043 | ofpacts, ofpacts_len); |
6f00e29b BP |
2044 | } else { |
2045 | must_add = true; | |
2046 | } | |
97f63e57 BP |
2047 | |
2048 | /* If there's no such rule or the rule doesn't have the actions we want, | |
2049 | * fall back to a executing a full flow mod. We can't optimize this at | |
2050 | * all because we didn't take enough locks above to ensure that the flow | |
2051 | * table didn't already change beneath us. */ | |
6f00e29b | 2052 | if (must_add) { |
97f63e57 BP |
2053 | simple_flow_mod(ofproto, match, priority, ofpacts, ofpacts_len, |
2054 | OFPFC_MODIFY_STRICT); | |
7ee20df1 | 2055 | } |
064af421 BP |
2056 | } |
2057 | ||
d51c8b71 JR |
2058 | /* Executes the flow modification specified in 'fm'. Returns 0 on success, or |
2059 | * an OFPERR_* OpenFlow error code on failure. | |
75a75043 | 2060 | * |
1b63b91e BP |
2061 | * This is a helper function for in-band control and fail-open and the "learn" |
2062 | * action. */ | |
d51c8b71 | 2063 | enum ofperr |
e3b56933 | 2064 | ofproto_flow_mod(struct ofproto *ofproto, struct ofputil_flow_mod *fm) |
15aaf599 | 2065 | OVS_EXCLUDED(ofproto_mutex) |
75a75043 | 2066 | { |
b90d6ee5 JR |
2067 | /* Optimize for the most common case of a repeated learn action. |
2068 | * If an identical flow already exists we only need to update its | |
2069 | * 'modified' time. */ | |
2070 | if (fm->command == OFPFC_MODIFY_STRICT && fm->table_id != OFPTT_ALL | |
2071 | && !(fm->flags & OFPUTIL_FF_RESET_COUNTS)) { | |
2072 | struct oftable *table = &ofproto->tables[fm->table_id]; | |
b90d6ee5 JR |
2073 | struct rule *rule; |
2074 | bool done = false; | |
2075 | ||
0ef165ec EJ |
2076 | rule = rule_from_cls_rule(classifier_find_match_exactly(&table->cls, |
2077 | &fm->match, | |
2078 | fm->priority)); | |
b90d6ee5 JR |
2079 | if (rule) { |
2080 | /* Reading many of the rule fields and writing on 'modified' | |
2081 | * requires the rule->mutex. Also, rule->actions may change | |
2082 | * if rule->mutex is not held. */ | |
06a0f3e2 BP |
2083 | const struct rule_actions *actions; |
2084 | ||
b90d6ee5 | 2085 | ovs_mutex_lock(&rule->mutex); |
06a0f3e2 | 2086 | actions = rule_get_actions(rule); |
b90d6ee5 JR |
2087 | if (rule->idle_timeout == fm->idle_timeout |
2088 | && rule->hard_timeout == fm->hard_timeout | |
ca26eb44 | 2089 | && rule->importance == fm->importance |
b90d6ee5 JR |
2090 | && rule->flags == (fm->flags & OFPUTIL_FF_STATE) |
2091 | && (!fm->modify_cookie || (fm->new_cookie == rule->flow_cookie)) | |
2092 | && ofpacts_equal(fm->ofpacts, fm->ofpacts_len, | |
06a0f3e2 | 2093 | actions->ofpacts, actions->ofpacts_len)) { |
b90d6ee5 JR |
2094 | /* Rule already exists and need not change, only update the |
2095 | modified timestamp. */ | |
2096 | rule->modified = time_msec(); | |
2097 | done = true; | |
2098 | } | |
2099 | ovs_mutex_unlock(&rule->mutex); | |
2100 | } | |
b90d6ee5 JR |
2101 | |
2102 | if (done) { | |
2103 | return 0; | |
2104 | } | |
2105 | } | |
2106 | ||
baae3d02 | 2107 | return handle_flow_mod__(ofproto, fm, NULL); |
75a75043 BP |
2108 | } |
2109 | ||
6c1491fb BP |
2110 | /* Searches for a rule with matching criteria exactly equal to 'target' in |
2111 | * ofproto's table 0 and, if it finds one, deletes it. | |
2112 | * | |
2113 | * This is a helper function for in-band control and fail-open. */ | |
b20f4073 | 2114 | void |
81a76618 | 2115 | ofproto_delete_flow(struct ofproto *ofproto, |
eb391b76 | 2116 | const struct match *target, int priority) |
15aaf599 | 2117 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 2118 | { |
8037acb4 | 2119 | struct classifier *cls = &ofproto->tables[0].cls; |
064af421 BP |
2120 | struct rule *rule; |
2121 | ||
97f63e57 BP |
2122 | /* First do a cheap check whether the rule we're looking for has already |
2123 | * been deleted. If so, then we're done. */ | |
8037acb4 BP |
2124 | rule = rule_from_cls_rule(classifier_find_match_exactly(cls, target, |
2125 | priority)); | |
834fe5cb BP |
2126 | if (!rule) { |
2127 | return; | |
bcf84111 | 2128 | } |
834fe5cb BP |
2129 | |
2130 | /* Execute a flow mod. We can't optimize this at all because we didn't | |
2131 | * take enough locks above to ensure that the flow table didn't already | |
2132 | * change beneath us. */ | |
2133 | simple_flow_mod(ofproto, target, priority, NULL, 0, OFPFC_DELETE_STRICT); | |
142e1f5c BP |
2134 | } |
2135 | ||
834fe5cb BP |
2136 | /* Delete all of the flows from all of ofproto's flow tables, then reintroduce |
2137 | * the flows required by in-band control and fail-open. */ | |
142e1f5c BP |
2138 | void |
2139 | ofproto_flush_flows(struct ofproto *ofproto) | |
2140 | { | |
7ee20df1 | 2141 | COVERAGE_INC(ofproto_flush); |
834fe5cb BP |
2142 | ofproto_flush__(ofproto); |
2143 | connmgr_flushed(ofproto->connmgr); | |
064af421 BP |
2144 | } |
2145 | \f | |
2146 | static void | |
2147 | reinit_ports(struct ofproto *p) | |
2148 | { | |
abe529af | 2149 | struct ofproto_port_dump dump; |
b3c01ed3 | 2150 | struct sset devnames; |
064af421 | 2151 | struct ofport *ofport; |
abe529af | 2152 | struct ofproto_port ofproto_port; |
b3c01ed3 | 2153 | const char *devname; |
064af421 | 2154 | |
898bf89d JP |
2155 | COVERAGE_INC(ofproto_reinit_ports); |
2156 | ||
b3c01ed3 | 2157 | sset_init(&devnames); |
4e8e4213 | 2158 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { |
1264ec95 | 2159 | sset_add(&devnames, netdev_get_name(ofport->netdev)); |
064af421 | 2160 | } |
abe529af BP |
2161 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { |
2162 | sset_add(&devnames, ofproto_port.name); | |
064af421 | 2163 | } |
064af421 | 2164 | |
b3c01ed3 BP |
2165 | SSET_FOR_EACH (devname, &devnames) { |
2166 | update_port(p, devname); | |
064af421 | 2167 | } |
b3c01ed3 | 2168 | sset_destroy(&devnames); |
064af421 BP |
2169 | } |
2170 | ||
4e022ec0 | 2171 | static ofp_port_t |
e1b1d06a JP |
2172 | alloc_ofp_port(struct ofproto *ofproto, const char *netdev_name) |
2173 | { | |
4e022ec0 | 2174 | uint16_t port_idx; |
e1b1d06a | 2175 | |
4e022ec0 | 2176 | port_idx = simap_get(&ofproto->ofp_requests, netdev_name); |
430dbb14 | 2177 | port_idx = port_idx ? port_idx : UINT16_MAX; |
4e022ec0 | 2178 | |
430dbb14 | 2179 | if (port_idx >= ofproto->max_ports |
fdcea803 GS |
2180 | || ofport_get_usage(ofproto, u16_to_ofp(port_idx)) == LLONG_MAX) { |
2181 | uint16_t lru_ofport = 0, end_port_no = ofproto->alloc_port_no; | |
2182 | long long int last_used_at, lru = LLONG_MAX; | |
e1b1d06a | 2183 | |
e1b1d06a JP |
2184 | /* Search for a free OpenFlow port number. We try not to |
2185 | * immediately reuse them to prevent problems due to old | |
484c8355 BP |
2186 | * flows. |
2187 | * | |
2188 | * We limit the automatically assigned port numbers to the lower half | |
2189 | * of the port range, to reserve the upper half for assignment by | |
2190 | * controllers. */ | |
6033d9d9 | 2191 | for (;;) { |
484c8355 | 2192 | if (++ofproto->alloc_port_no >= MIN(ofproto->max_ports, 32768)) { |
fdcea803 | 2193 | ofproto->alloc_port_no = 1; |
6033d9d9 | 2194 | } |
fdcea803 GS |
2195 | last_used_at = ofport_get_usage(ofproto, |
2196 | u16_to_ofp(ofproto->alloc_port_no)); | |
2197 | if (!last_used_at) { | |
430dbb14 | 2198 | port_idx = ofproto->alloc_port_no; |
6033d9d9 | 2199 | break; |
865b26a4 GS |
2200 | } else if ( last_used_at < time_msec() - 60*60*1000) { |
2201 | /* If the port with ofport 'ofproto->alloc_port_no' was deleted | |
2202 | * more than an hour ago, consider it usable. */ | |
2203 | ofport_remove_usage(ofproto, | |
2204 | u16_to_ofp(ofproto->alloc_port_no)); | |
2205 | port_idx = ofproto->alloc_port_no; | |
2206 | break; | |
fdcea803 GS |
2207 | } else if (last_used_at < lru) { |
2208 | lru = last_used_at; | |
2209 | lru_ofport = ofproto->alloc_port_no; | |
e1b1d06a | 2210 | } |
fdcea803 | 2211 | |
430dbb14 | 2212 | if (ofproto->alloc_port_no == end_port_no) { |
fdcea803 GS |
2213 | if (lru_ofport) { |
2214 | port_idx = lru_ofport; | |
2215 | break; | |
2216 | } | |
6033d9d9 | 2217 | return OFPP_NONE; |
e1b1d06a JP |
2218 | } |
2219 | } | |
2220 | } | |
fdcea803 | 2221 | ofport_set_usage(ofproto, u16_to_ofp(port_idx), LLONG_MAX); |
4e022ec0 | 2222 | return u16_to_ofp(port_idx); |
e1b1d06a JP |
2223 | } |
2224 | ||
2225 | static void | |
fdcea803 | 2226 | dealloc_ofp_port(struct ofproto *ofproto, ofp_port_t ofp_port) |
e1b1d06a | 2227 | { |
430dbb14 | 2228 | if (ofp_to_u16(ofp_port) < ofproto->max_ports) { |
fdcea803 | 2229 | ofport_set_usage(ofproto, ofp_port, time_msec()); |
40fa9417 | 2230 | } |
e1b1d06a JP |
2231 | } |
2232 | ||
fbfa2911 BP |
2233 | /* Opens and returns a netdev for 'ofproto_port' in 'ofproto', or a null |
2234 | * pointer if the netdev cannot be opened. On success, also fills in | |
d7d92203 | 2235 | * '*pp'. */ |
b33951b8 | 2236 | static struct netdev * |
e1b1d06a JP |
2237 | ofport_open(struct ofproto *ofproto, |
2238 | struct ofproto_port *ofproto_port, | |
9e1fd49b | 2239 | struct ofputil_phy_port *pp) |
064af421 BP |
2240 | { |
2241 | enum netdev_flags flags; | |
064af421 | 2242 | struct netdev *netdev; |
064af421 BP |
2243 | int error; |
2244 | ||
18812dff | 2245 | error = netdev_open(ofproto_port->name, ofproto_port->type, &netdev); |
064af421 | 2246 | if (error) { |
fbfa2911 | 2247 | VLOG_WARN_RL(&rl, "%s: ignoring port %s (%"PRIu16") because netdev %s " |
064af421 | 2248 | "cannot be opened (%s)", |
fbfa2911 | 2249 | ofproto->name, |
abe529af | 2250 | ofproto_port->name, ofproto_port->ofp_port, |
10a89ef0 | 2251 | ofproto_port->name, ovs_strerror(error)); |
064af421 BP |
2252 | return NULL; |
2253 | } | |
2254 | ||
e1b1d06a JP |
2255 | if (ofproto_port->ofp_port == OFPP_NONE) { |
2256 | if (!strcmp(ofproto->name, ofproto_port->name)) { | |
2257 | ofproto_port->ofp_port = OFPP_LOCAL; | |
2258 | } else { | |
2259 | ofproto_port->ofp_port = alloc_ofp_port(ofproto, | |
2260 | ofproto_port->name); | |
2261 | } | |
2262 | } | |
9e1fd49b BP |
2263 | pp->port_no = ofproto_port->ofp_port; |
2264 | netdev_get_etheraddr(netdev, pp->hw_addr); | |
2265 | ovs_strlcpy(pp->name, ofproto_port->name, sizeof pp->name); | |
064af421 | 2266 | netdev_get_flags(netdev, &flags); |
9e1fd49b BP |
2267 | pp->config = flags & NETDEV_UP ? 0 : OFPUTIL_PC_PORT_DOWN; |
2268 | pp->state = netdev_get_carrier(netdev) ? 0 : OFPUTIL_PS_LINK_DOWN; | |
2269 | netdev_get_features(netdev, &pp->curr, &pp->advertised, | |
2270 | &pp->supported, &pp->peer); | |
cd65125d BP |
2271 | pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000; |
2272 | pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000; | |
118c4676 | 2273 | |
b33951b8 | 2274 | return netdev; |
064af421 BP |
2275 | } |
2276 | ||
b33951b8 | 2277 | /* Returns true if most fields of 'a' and 'b' are equal. Differences in name, |
d7d92203 | 2278 | * port number, and 'config' bits other than OFPUTIL_PC_PORT_DOWN are |
b33951b8 BP |
2279 | * disregarded. */ |
2280 | static bool | |
9e1fd49b BP |
2281 | ofport_equal(const struct ofputil_phy_port *a, |
2282 | const struct ofputil_phy_port *b) | |
064af421 | 2283 | { |
9e1fd49b | 2284 | return (eth_addr_equals(a->hw_addr, b->hw_addr) |
064af421 | 2285 | && a->state == b->state |
9e1fd49b | 2286 | && !((a->config ^ b->config) & OFPUTIL_PC_PORT_DOWN) |
064af421 BP |
2287 | && a->curr == b->curr |
2288 | && a->advertised == b->advertised | |
2289 | && a->supported == b->supported | |
9e1fd49b BP |
2290 | && a->peer == b->peer |
2291 | && a->curr_speed == b->curr_speed | |
2292 | && a->max_speed == b->max_speed); | |
064af421 BP |
2293 | } |
2294 | ||
b33951b8 BP |
2295 | /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'. |
2296 | * The caller must ensure that 'p' does not have a conflicting ofport (that is, | |
2297 | * one with the same name or port number). */ | |
064af421 | 2298 | static void |
b33951b8 | 2299 | ofport_install(struct ofproto *p, |
9e1fd49b | 2300 | struct netdev *netdev, const struct ofputil_phy_port *pp) |
064af421 | 2301 | { |
b33951b8 BP |
2302 | const char *netdev_name = netdev_get_name(netdev); |
2303 | struct ofport *ofport; | |
abe529af | 2304 | int error; |
72b06300 | 2305 | |
b33951b8 | 2306 | /* Create ofport. */ |
abe529af BP |
2307 | ofport = p->ofproto_class->port_alloc(); |
2308 | if (!ofport) { | |
2309 | error = ENOMEM; | |
2310 | goto error; | |
2311 | } | |
0f7d71a5 | 2312 | ofport->ofproto = p; |
b33951b8 | 2313 | ofport->netdev = netdev; |
61501798 | 2314 | ofport->change_seq = netdev_get_change_seq(netdev); |
9e1fd49b BP |
2315 | ofport->pp = *pp; |
2316 | ofport->ofp_port = pp->port_no; | |
65e0be10 | 2317 | ofport->created = time_msec(); |
b33951b8 BP |
2318 | |
2319 | /* Add port to 'p'. */ | |
4e022ec0 | 2320 | hmap_insert(&p->ports, &ofport->hmap_node, |
f9c0c3ec | 2321 | hash_ofp_port(ofport->ofp_port)); |
72b06300 | 2322 | shash_add(&p->port_by_name, netdev_name, ofport); |
abe529af | 2323 | |
ada3428f | 2324 | update_mtu(p, ofport); |
9197df76 | 2325 | |
abe529af BP |
2326 | /* Let the ofproto_class initialize its private data. */ |
2327 | error = p->ofproto_class->port_construct(ofport); | |
2328 | if (error) { | |
2329 | goto error; | |
2330 | } | |
2a6f78e0 | 2331 | connmgr_send_port_status(p->connmgr, NULL, pp, OFPPR_ADD); |
abe529af BP |
2332 | return; |
2333 | ||
2334 | error: | |
2335 | VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)", | |
10a89ef0 | 2336 | p->name, netdev_name, ovs_strerror(error)); |
abe529af BP |
2337 | if (ofport) { |
2338 | ofport_destroy__(ofport); | |
2339 | } else { | |
2340 | netdev_close(netdev); | |
72b06300 | 2341 | } |
064af421 BP |
2342 | } |
2343 | ||
b33951b8 | 2344 | /* Removes 'ofport' from 'p' and destroys it. */ |
064af421 | 2345 | static void |
0f7d71a5 | 2346 | ofport_remove(struct ofport *ofport) |
064af421 | 2347 | { |
2a6f78e0 | 2348 | connmgr_send_port_status(ofport->ofproto->connmgr, NULL, &ofport->pp, |
fa066f01 | 2349 | OFPPR_DELETE); |
abe529af | 2350 | ofport_destroy(ofport); |
b33951b8 BP |
2351 | } |
2352 | ||
2353 | /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and | |
2354 | * destroys it. */ | |
2355 | static void | |
2356 | ofport_remove_with_name(struct ofproto *ofproto, const char *name) | |
2357 | { | |
2358 | struct ofport *port = shash_find_data(&ofproto->port_by_name, name); | |
2359 | if (port) { | |
0f7d71a5 | 2360 | ofport_remove(port); |
b33951b8 BP |
2361 | } |
2362 | } | |
2363 | ||
9e1fd49b | 2364 | /* Updates 'port' with new 'pp' description. |
b33951b8 BP |
2365 | * |
2366 | * Does not handle a name or port number change. The caller must implement | |
2367 | * such a change as a delete followed by an add. */ | |
2368 | static void | |
9e1fd49b | 2369 | ofport_modified(struct ofport *port, struct ofputil_phy_port *pp) |
b33951b8 | 2370 | { |
9e1fd49b BP |
2371 | memcpy(port->pp.hw_addr, pp->hw_addr, ETH_ADDR_LEN); |
2372 | port->pp.config = ((port->pp.config & ~OFPUTIL_PC_PORT_DOWN) | |
2373 | | (pp->config & OFPUTIL_PC_PORT_DOWN)); | |
53fd5c7c BP |
2374 | port->pp.state = ((port->pp.state & ~OFPUTIL_PS_LINK_DOWN) |
2375 | | (pp->state & OFPUTIL_PS_LINK_DOWN)); | |
9e1fd49b BP |
2376 | port->pp.curr = pp->curr; |
2377 | port->pp.advertised = pp->advertised; | |
2378 | port->pp.supported = pp->supported; | |
2379 | port->pp.peer = pp->peer; | |
2380 | port->pp.curr_speed = pp->curr_speed; | |
2381 | port->pp.max_speed = pp->max_speed; | |
b33951b8 | 2382 | |
2a6f78e0 BP |
2383 | connmgr_send_port_status(port->ofproto->connmgr, NULL, |
2384 | &port->pp, OFPPR_MODIFY); | |
064af421 BP |
2385 | } |
2386 | ||
5a2dfd47 JP |
2387 | /* Update OpenFlow 'state' in 'port' and notify controller. */ |
2388 | void | |
9e1fd49b | 2389 | ofproto_port_set_state(struct ofport *port, enum ofputil_port_state state) |
5a2dfd47 | 2390 | { |
9e1fd49b BP |
2391 | if (port->pp.state != state) { |
2392 | port->pp.state = state; | |
2a6f78e0 BP |
2393 | connmgr_send_port_status(port->ofproto->connmgr, NULL, |
2394 | &port->pp, OFPPR_MODIFY); | |
5a2dfd47 JP |
2395 | } |
2396 | } | |
2397 | ||
abe529af | 2398 | void |
4e022ec0 | 2399 | ofproto_port_unregister(struct ofproto *ofproto, ofp_port_t ofp_port) |
e7934396 | 2400 | { |
abe529af BP |
2401 | struct ofport *port = ofproto_get_port(ofproto, ofp_port); |
2402 | if (port) { | |
52a90c29 BP |
2403 | if (port->ofproto->ofproto_class->set_realdev) { |
2404 | port->ofproto->ofproto_class->set_realdev(port, 0, 0); | |
2405 | } | |
b308140a JP |
2406 | if (port->ofproto->ofproto_class->set_stp_port) { |
2407 | port->ofproto->ofproto_class->set_stp_port(port, NULL); | |
2408 | } | |
9efd308e DV |
2409 | if (port->ofproto->ofproto_class->set_rstp_port) { |
2410 | port->ofproto->ofproto_class->set_rstp_port(port, NULL); | |
2411 | } | |
abe529af | 2412 | if (port->ofproto->ofproto_class->set_cfm) { |
a5610457 | 2413 | port->ofproto->ofproto_class->set_cfm(port, NULL); |
abe529af BP |
2414 | } |
2415 | if (port->ofproto->ofproto_class->bundle_remove) { | |
2416 | port->ofproto->ofproto_class->bundle_remove(port); | |
e7934396 BP |
2417 | } |
2418 | } | |
2419 | } | |
2420 | ||
2421 | static void | |
abe529af | 2422 | ofport_destroy__(struct ofport *port) |
e7934396 | 2423 | { |
abe529af BP |
2424 | struct ofproto *ofproto = port->ofproto; |
2425 | const char *name = netdev_get_name(port->netdev); | |
fa066f01 | 2426 | |
abe529af BP |
2427 | hmap_remove(&ofproto->ports, &port->hmap_node); |
2428 | shash_delete(&ofproto->port_by_name, | |
2429 | shash_find(&ofproto->port_by_name, name)); | |
fa066f01 | 2430 | |
abe529af BP |
2431 | netdev_close(port->netdev); |
2432 | ofproto->ofproto_class->port_dealloc(port); | |
e7934396 BP |
2433 | } |
2434 | ||
064af421 | 2435 | static void |
abe529af | 2436 | ofport_destroy(struct ofport *port) |
064af421 | 2437 | { |
fa066f01 | 2438 | if (port) { |
e1b1d06a | 2439 | dealloc_ofp_port(port->ofproto, port->ofp_port); |
abe529af BP |
2440 | port->ofproto->ofproto_class->port_destruct(port); |
2441 | ofport_destroy__(port); | |
2442 | } | |
064af421 BP |
2443 | } |
2444 | ||
abe529af | 2445 | struct ofport * |
4e022ec0 | 2446 | ofproto_get_port(const struct ofproto *ofproto, ofp_port_t ofp_port) |
ca0f572c BP |
2447 | { |
2448 | struct ofport *port; | |
2449 | ||
f9c0c3ec | 2450 | HMAP_FOR_EACH_IN_BUCKET (port, hmap_node, hash_ofp_port(ofp_port), |
4e022ec0 | 2451 | &ofproto->ports) { |
abe529af | 2452 | if (port->ofp_port == ofp_port) { |
ca0f572c BP |
2453 | return port; |
2454 | } | |
2455 | } | |
2456 | return NULL; | |
2457 | } | |
2458 | ||
fdcea803 GS |
2459 | static long long int |
2460 | ofport_get_usage(const struct ofproto *ofproto, ofp_port_t ofp_port) | |
2461 | { | |
2462 | struct ofport_usage *usage; | |
2463 | ||
2464 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2465 | &ofproto->ofport_usage) { | |
2466 | if (usage->ofp_port == ofp_port) { | |
2467 | return usage->last_used; | |
2468 | } | |
2469 | } | |
2470 | return 0; | |
2471 | } | |
2472 | ||
2473 | static void | |
2474 | ofport_set_usage(struct ofproto *ofproto, ofp_port_t ofp_port, | |
2475 | long long int last_used) | |
2476 | { | |
2477 | struct ofport_usage *usage; | |
2478 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2479 | &ofproto->ofport_usage) { | |
2480 | if (usage->ofp_port == ofp_port) { | |
2481 | usage->last_used = last_used; | |
2482 | return; | |
2483 | } | |
2484 | } | |
2485 | ovs_assert(last_used == LLONG_MAX); | |
2486 | ||
2487 | usage = xmalloc(sizeof *usage); | |
2488 | usage->ofp_port = ofp_port; | |
2489 | usage->last_used = last_used; | |
2490 | hmap_insert(&ofproto->ofport_usage, &usage->hmap_node, | |
2491 | hash_ofp_port(ofp_port)); | |
2492 | } | |
2493 | ||
865b26a4 GS |
2494 | static void |
2495 | ofport_remove_usage(struct ofproto *ofproto, ofp_port_t ofp_port) | |
2496 | { | |
2497 | struct ofport_usage *usage; | |
2498 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2499 | &ofproto->ofport_usage) { | |
2500 | if (usage->ofp_port == ofp_port) { | |
2501 | hmap_remove(&ofproto->ofport_usage, &usage->hmap_node); | |
2502 | free(usage); | |
2503 | break; | |
2504 | } | |
2505 | } | |
2506 | } | |
2507 | ||
6527c598 PS |
2508 | int |
2509 | ofproto_port_get_stats(const struct ofport *port, struct netdev_stats *stats) | |
2510 | { | |
2511 | struct ofproto *ofproto = port->ofproto; | |
2512 | int error; | |
2513 | ||
2514 | if (ofproto->ofproto_class->port_get_stats) { | |
2515 | error = ofproto->ofproto_class->port_get_stats(port, stats); | |
2516 | } else { | |
2517 | error = EOPNOTSUPP; | |
2518 | } | |
2519 | ||
2520 | return error; | |
2521 | } | |
2522 | ||
064af421 | 2523 | static void |
b33951b8 | 2524 | update_port(struct ofproto *ofproto, const char *name) |
064af421 | 2525 | { |
abe529af | 2526 | struct ofproto_port ofproto_port; |
9e1fd49b | 2527 | struct ofputil_phy_port pp; |
b33951b8 BP |
2528 | struct netdev *netdev; |
2529 | struct ofport *port; | |
064af421 BP |
2530 | |
2531 | COVERAGE_INC(ofproto_update_port); | |
c874dc6d | 2532 | |
b33951b8 | 2533 | /* Fetch 'name''s location and properties from the datapath. */ |
abe529af | 2534 | netdev = (!ofproto_port_query_by_name(ofproto, name, &ofproto_port) |
fbfa2911 | 2535 | ? ofport_open(ofproto, &ofproto_port, &pp) |
b33951b8 | 2536 | : NULL); |
4e022ec0 | 2537 | |
b33951b8 | 2538 | if (netdev) { |
abe529af | 2539 | port = ofproto_get_port(ofproto, ofproto_port.ofp_port); |
b33951b8 | 2540 | if (port && !strcmp(netdev_get_name(port->netdev), name)) { |
e65942a0 BP |
2541 | struct netdev *old_netdev = port->netdev; |
2542 | ||
b33951b8 | 2543 | /* 'name' hasn't changed location. Any properties changed? */ |
9e1fd49b BP |
2544 | if (!ofport_equal(&port->pp, &pp)) { |
2545 | ofport_modified(port, &pp); | |
abe529af BP |
2546 | } |
2547 | ||
ada3428f | 2548 | update_mtu(ofproto, port); |
9197df76 | 2549 | |
e65942a0 BP |
2550 | /* Install the newly opened netdev in case it has changed. |
2551 | * Don't close the old netdev yet in case port_modified has to | |
2552 | * remove a retained reference to it.*/ | |
abe529af | 2553 | port->netdev = netdev; |
61501798 | 2554 | port->change_seq = netdev_get_change_seq(netdev); |
abe529af BP |
2555 | |
2556 | if (port->ofproto->ofproto_class->port_modified) { | |
2557 | port->ofproto->ofproto_class->port_modified(port); | |
b33951b8 | 2558 | } |
e65942a0 BP |
2559 | |
2560 | netdev_close(old_netdev); | |
b33951b8 BP |
2561 | } else { |
2562 | /* If 'port' is nonnull then its name differs from 'name' and thus | |
2563 | * we should delete it. If we think there's a port named 'name' | |
2564 | * then its port number must be wrong now so delete it too. */ | |
2565 | if (port) { | |
0f7d71a5 | 2566 | ofport_remove(port); |
b33951b8 BP |
2567 | } |
2568 | ofport_remove_with_name(ofproto, name); | |
9e1fd49b | 2569 | ofport_install(ofproto, netdev, &pp); |
c874dc6d | 2570 | } |
b33951b8 BP |
2571 | } else { |
2572 | /* Any port named 'name' is gone now. */ | |
2573 | ofport_remove_with_name(ofproto, name); | |
c874dc6d | 2574 | } |
abe529af | 2575 | ofproto_port_destroy(&ofproto_port); |
064af421 BP |
2576 | } |
2577 | ||
2578 | static int | |
2579 | init_ports(struct ofproto *p) | |
2580 | { | |
abe529af BP |
2581 | struct ofproto_port_dump dump; |
2582 | struct ofproto_port ofproto_port; | |
e1b1d06a | 2583 | struct shash_node *node, *next; |
abe529af BP |
2584 | |
2585 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { | |
e1b1d06a JP |
2586 | const char *name = ofproto_port.name; |
2587 | ||
2588 | if (shash_find(&p->port_by_name, name)) { | |
fbfa2911 | 2589 | VLOG_WARN_RL(&rl, "%s: ignoring duplicate device %s in datapath", |
e1b1d06a | 2590 | p->name, name); |
abe529af | 2591 | } else { |
9e1fd49b | 2592 | struct ofputil_phy_port pp; |
b33951b8 BP |
2593 | struct netdev *netdev; |
2594 | ||
e1b1d06a JP |
2595 | /* Check if an OpenFlow port number had been requested. */ |
2596 | node = shash_find(&init_ofp_ports, name); | |
2597 | if (node) { | |
2598 | const struct iface_hint *iface_hint = node->data; | |
4e022ec0 AW |
2599 | simap_put(&p->ofp_requests, name, |
2600 | ofp_to_u16(iface_hint->ofp_port)); | |
e1b1d06a JP |
2601 | } |
2602 | ||
fbfa2911 | 2603 | netdev = ofport_open(p, &ofproto_port, &pp); |
b33951b8 | 2604 | if (netdev) { |
9e1fd49b | 2605 | ofport_install(p, netdev, &pp); |
430dbb14 | 2606 | if (ofp_to_u16(ofproto_port.ofp_port) < p->max_ports) { |
7c35397c | 2607 | p->alloc_port_no = MAX(p->alloc_port_no, |
430dbb14 | 2608 | ofp_to_u16(ofproto_port.ofp_port)); |
7c35397c | 2609 | } |
064af421 BP |
2610 | } |
2611 | } | |
2612 | } | |
b0ec0f27 | 2613 | |
e1b1d06a | 2614 | SHASH_FOR_EACH_SAFE(node, next, &init_ofp_ports) { |
4f9e08a5 | 2615 | struct iface_hint *iface_hint = node->data; |
e1b1d06a JP |
2616 | |
2617 | if (!strcmp(iface_hint->br_name, p->name)) { | |
2618 | free(iface_hint->br_name); | |
2619 | free(iface_hint->br_type); | |
4f9e08a5 | 2620 | free(iface_hint); |
e1b1d06a JP |
2621 | shash_delete(&init_ofp_ports, node); |
2622 | } | |
2623 | } | |
2624 | ||
064af421 BP |
2625 | return 0; |
2626 | } | |
9197df76 JP |
2627 | |
2628 | /* Find the minimum MTU of all non-datapath devices attached to 'p'. | |
2629 | * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */ | |
2630 | static int | |
2631 | find_min_mtu(struct ofproto *p) | |
2632 | { | |
2633 | struct ofport *ofport; | |
2634 | int mtu = 0; | |
2635 | ||
2636 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2637 | struct netdev *netdev = ofport->netdev; | |
2638 | int dev_mtu; | |
2639 | ||
2640 | /* Skip any internal ports, since that's what we're trying to | |
2641 | * set. */ | |
2642 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
2643 | continue; | |
2644 | } | |
2645 | ||
2646 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2647 | continue; | |
2648 | } | |
2649 | if (!mtu || dev_mtu < mtu) { | |
2650 | mtu = dev_mtu; | |
2651 | } | |
2652 | } | |
2653 | ||
2654 | return mtu ? mtu: ETH_PAYLOAD_MAX; | |
2655 | } | |
2656 | ||
ada3428f PS |
2657 | /* Update MTU of all datapath devices on 'p' to the minimum of the |
2658 | * non-datapath ports in event of 'port' added or changed. */ | |
9197df76 | 2659 | static void |
ada3428f | 2660 | update_mtu(struct ofproto *p, struct ofport *port) |
9197df76 JP |
2661 | { |
2662 | struct ofport *ofport; | |
ada3428f PS |
2663 | struct netdev *netdev = port->netdev; |
2664 | int dev_mtu, old_min; | |
2665 | ||
2666 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2667 | port->mtu = 0; | |
2668 | return; | |
2669 | } | |
2670 | if (!strcmp(netdev_get_type(port->netdev), "internal")) { | |
2671 | if (dev_mtu > p->min_mtu) { | |
2672 | if (!netdev_set_mtu(port->netdev, p->min_mtu)) { | |
2673 | dev_mtu = p->min_mtu; | |
2674 | } | |
2675 | } | |
2676 | port->mtu = dev_mtu; | |
2677 | return; | |
2678 | } | |
2679 | ||
2680 | /* For non-internal port find new min mtu. */ | |
2681 | old_min = p->min_mtu; | |
2682 | port->mtu = dev_mtu; | |
2683 | p->min_mtu = find_min_mtu(p); | |
2684 | if (p->min_mtu == old_min) { | |
2685 | return; | |
2686 | } | |
9197df76 JP |
2687 | |
2688 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2689 | struct netdev *netdev = ofport->netdev; | |
2690 | ||
2691 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
ada3428f PS |
2692 | if (!netdev_set_mtu(netdev, p->min_mtu)) { |
2693 | ofport->mtu = p->min_mtu; | |
2694 | } | |
9197df76 JP |
2695 | } |
2696 | } | |
2697 | } | |
064af421 | 2698 | \f |
f416c8d6 JR |
2699 | static void |
2700 | ofproto_rule_destroy__(struct rule *rule) | |
2701 | OVS_NO_THREAD_SAFETY_ANALYSIS | |
2702 | { | |
2703 | cls_rule_destroy(CONST_CAST(struct cls_rule *, &rule->cr)); | |
2704 | rule_actions_destroy(rule_get_actions(rule)); | |
2705 | ovs_mutex_destroy(&rule->mutex); | |
2706 | rule->ofproto->ofproto_class->rule_dealloc(rule); | |
2707 | } | |
2708 | ||
d6671377 JR |
2709 | /* Create a new rule based on attributes in 'fm', match in 'cr', and |
2710 | * 'table_id'. Note that the rule is NOT inserted into a any data structures | |
2711 | * yet. Takes ownership of 'cr'. */ | |
2712 | static enum ofperr | |
2713 | ofproto_rule_create(struct ofproto *ofproto, struct ofputil_flow_mod *fm, | |
2714 | struct cls_rule *cr, uint8_t table_id, | |
2715 | struct rule **rulep) | |
2716 | OVS_REQUIRES(ofproto_mutex) | |
2717 | { | |
2718 | struct rule *rule; | |
2719 | enum ofperr error; | |
2720 | ||
2721 | /* Allocate new rule. */ | |
2722 | rule = ofproto->ofproto_class->rule_alloc(); | |
2723 | if (!rule) { | |
2724 | cls_rule_destroy(cr); | |
2725 | VLOG_WARN_RL(&rl, "%s: failed to allocate a rule.", ofproto->name); | |
d51c8b71 | 2726 | return OFPERR_OFPFMFC_UNKNOWN; |
d6671377 JR |
2727 | } |
2728 | ||
2729 | /* Initialize base state. */ | |
2730 | *CONST_CAST(struct ofproto **, &rule->ofproto) = ofproto; | |
2731 | cls_rule_move(CONST_CAST(struct cls_rule *, &rule->cr), cr); | |
2732 | ovs_refcount_init(&rule->ref_count); | |
2733 | rule->flow_cookie = fm->new_cookie; | |
2734 | rule->created = rule->modified = time_msec(); | |
2735 | ||
2736 | ovs_mutex_init(&rule->mutex); | |
2737 | ovs_mutex_lock(&rule->mutex); | |
2738 | rule->idle_timeout = fm->idle_timeout; | |
2739 | rule->hard_timeout = fm->hard_timeout; | |
2740 | rule->importance = fm->importance; | |
2741 | ovs_mutex_unlock(&rule->mutex); | |
2742 | ||
2743 | *CONST_CAST(uint8_t *, &rule->table_id) = table_id; | |
2744 | rule->flags = fm->flags & OFPUTIL_FF_STATE; | |
2745 | ovsrcu_set_hidden(&rule->actions, | |
2746 | rule_actions_create(fm->ofpacts, fm->ofpacts_len)); | |
2747 | list_init(&rule->meter_list_node); | |
2748 | rule->eviction_group = NULL; | |
2749 | list_init(&rule->expirable); | |
2750 | rule->monitor_flags = 0; | |
2751 | rule->add_seqno = 0; | |
2752 | rule->modify_seqno = 0; | |
2753 | ||
2754 | /* Construct rule, initializing derived state. */ | |
2755 | error = ofproto->ofproto_class->rule_construct(rule); | |
2756 | if (error) { | |
2757 | ofproto_rule_destroy__(rule); | |
2758 | return error; | |
2759 | } | |
2760 | ||
2761 | *rulep = rule; | |
2762 | return 0; | |
2763 | } | |
2764 | ||
f416c8d6 JR |
2765 | static void |
2766 | rule_destroy_cb(struct rule *rule) | |
2767 | { | |
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 | ||
809c7548 RW |
2803 | void |
2804 | ofproto_group_ref(struct ofgroup *group) | |
2805 | { | |
2806 | if (group) { | |
2807 | ovs_refcount_ref(&group->ref_count); | |
2808 | } | |
2809 | } | |
2810 | ||
2811 | void | |
2812 | ofproto_group_unref(struct ofgroup *group) | |
2813 | { | |
2814 | if (group && ovs_refcount_unref(&group->ref_count) == 1) { | |
2815 | group->ofproto->ofproto_class->group_destruct(group); | |
2816 | ofputil_bucket_list_destroy(&group->buckets); | |
2817 | group->ofproto->ofproto_class->group_dealloc(group); | |
2818 | } | |
2819 | } | |
2820 | ||
65efd2ab JR |
2821 | static uint32_t get_provider_meter_id(const struct ofproto *, |
2822 | uint32_t of_meter_id); | |
2823 | ||
dc723c44 JR |
2824 | /* Creates and returns a new 'struct rule_actions', whose actions are a copy |
2825 | * of from the 'ofpacts_len' bytes of 'ofpacts'. */ | |
2826 | const struct rule_actions * | |
4c7562c5 | 2827 | rule_actions_create(const struct ofpact *ofpacts, size_t ofpacts_len) |
6f00e29b BP |
2828 | { |
2829 | struct rule_actions *actions; | |
2830 | ||
dc723c44 | 2831 | actions = xmalloc(sizeof *actions + ofpacts_len); |
6f00e29b | 2832 | actions->ofpacts_len = ofpacts_len; |
4c7562c5 | 2833 | actions->has_meter = ofpacts_get_meter(ofpacts, ofpacts_len) != 0; |
dc723c44 | 2834 | memcpy(actions->ofpacts, ofpacts, ofpacts_len); |
65efd2ab | 2835 | |
35f48b8b BP |
2836 | actions->has_learn_with_delete = (next_learn_with_delete(actions, NULL) |
2837 | != NULL); | |
2838 | ||
6f00e29b BP |
2839 | return actions; |
2840 | } | |
2841 | ||
dc723c44 | 2842 | /* Free the actions after the RCU quiescent period is reached. */ |
6f00e29b | 2843 | void |
dc723c44 | 2844 | rule_actions_destroy(const struct rule_actions *actions) |
6f00e29b | 2845 | { |
06a0f3e2 | 2846 | if (actions) { |
dc723c44 | 2847 | ovsrcu_postpone(free, CONST_CAST(struct rule_actions *, actions)); |
6f00e29b BP |
2848 | } |
2849 | } | |
2850 | ||
bcf84111 | 2851 | /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action |
f25d0cf3 | 2852 | * that outputs to 'port' (output to OFPP_FLOOD and OFPP_ALL doesn't count). */ |
cdbdeeda | 2853 | bool |
4e022ec0 | 2854 | ofproto_rule_has_out_port(const struct rule *rule, ofp_port_t port) |
15aaf599 | 2855 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 2856 | { |
06a0f3e2 BP |
2857 | if (port == OFPP_ANY) { |
2858 | return true; | |
2859 | } else { | |
2860 | const struct rule_actions *actions = rule_get_actions(rule); | |
2861 | return ofpacts_output_to_port(actions->ofpacts, | |
2862 | actions->ofpacts_len, port); | |
2863 | } | |
064af421 BP |
2864 | } |
2865 | ||
7395c052 | 2866 | /* Returns true if 'rule' has group and equals group_id. */ |
74e79b7c | 2867 | static bool |
7395c052 | 2868 | ofproto_rule_has_out_group(const struct rule *rule, uint32_t group_id) |
15aaf599 | 2869 | OVS_REQUIRES(ofproto_mutex) |
7395c052 | 2870 | { |
06a0f3e2 BP |
2871 | if (group_id == OFPG_ANY) { |
2872 | return true; | |
2873 | } else { | |
2874 | const struct rule_actions *actions = rule_get_actions(rule); | |
2875 | return ofpacts_output_to_group(actions->ofpacts, | |
2876 | actions->ofpacts_len, group_id); | |
2877 | } | |
7395c052 NZ |
2878 | } |
2879 | ||
35412852 BP |
2880 | static void |
2881 | rule_execute_destroy(struct rule_execute *e) | |
eedc0097 | 2882 | { |
35412852 BP |
2883 | ofproto_rule_unref(e->rule); |
2884 | list_remove(&e->list_node); | |
2885 | free(e); | |
2886 | } | |
eedc0097 | 2887 | |
35412852 BP |
2888 | /* Executes all "rule_execute" operations queued up in ofproto->rule_executes, |
2889 | * by passing them to the ofproto provider. */ | |
2890 | static void | |
2891 | run_rule_executes(struct ofproto *ofproto) | |
15aaf599 | 2892 | OVS_EXCLUDED(ofproto_mutex) |
35412852 BP |
2893 | { |
2894 | struct rule_execute *e, *next; | |
ca6ba700 | 2895 | struct ovs_list executes; |
35412852 BP |
2896 | |
2897 | guarded_list_pop_all(&ofproto->rule_executes, &executes); | |
2898 | LIST_FOR_EACH_SAFE (e, next, list_node, &executes) { | |
35412852 BP |
2899 | struct flow flow; |
2900 | ||
cf62fa4c | 2901 | flow_extract(e->packet, &flow); |
b5e7e61a | 2902 | flow.in_port.ofp_port = e->in_port; |
35412852 BP |
2903 | ofproto->ofproto_class->rule_execute(e->rule, &flow, e->packet); |
2904 | ||
2905 | rule_execute_destroy(e); | |
2906 | } | |
2907 | } | |
2908 | ||
2909 | /* Destroys and discards all "rule_execute" operations queued up in | |
2910 | * ofproto->rule_executes. */ | |
2911 | static void | |
2912 | destroy_rule_executes(struct ofproto *ofproto) | |
2913 | { | |
2914 | struct rule_execute *e, *next; | |
ca6ba700 | 2915 | struct ovs_list executes; |
35412852 BP |
2916 | |
2917 | guarded_list_pop_all(&ofproto->rule_executes, &executes); | |
2918 | LIST_FOR_EACH_SAFE (e, next, list_node, &executes) { | |
cf62fa4c | 2919 | dp_packet_delete(e->packet); |
35412852 BP |
2920 | rule_execute_destroy(e); |
2921 | } | |
350a665f BP |
2922 | } |
2923 | ||
adcf00ba | 2924 | static bool |
834fe5cb | 2925 | rule_is_readonly(const struct rule *rule) |
5c67e4af | 2926 | { |
834fe5cb BP |
2927 | const struct oftable *table = &rule->ofproto->tables[rule->table_id]; |
2928 | return (table->flags & OFTABLE_READONLY) != 0; | |
5c67e4af | 2929 | } |
fa066f01 | 2930 | \f |
35f48b8b BP |
2931 | static uint32_t |
2932 | hash_learned_cookie(ovs_be64 cookie_, uint8_t table_id) | |
2933 | { | |
2934 | uint64_t cookie = (OVS_FORCE uint64_t) cookie_; | |
2935 | return hash_3words(cookie, cookie >> 32, table_id); | |
2936 | } | |
2937 | ||
2938 | static void | |
2939 | learned_cookies_update_one__(struct ofproto *ofproto, | |
2940 | const struct ofpact_learn *learn, | |
ca6ba700 | 2941 | int delta, struct ovs_list *dead_cookies) |
35f48b8b BP |
2942 | OVS_REQUIRES(ofproto_mutex) |
2943 | { | |
2944 | uint32_t hash = hash_learned_cookie(learn->cookie, learn->table_id); | |
2945 | struct learned_cookie *c; | |
2946 | ||
2947 | HMAP_FOR_EACH_WITH_HASH (c, u.hmap_node, hash, &ofproto->learned_cookies) { | |
2948 | if (c->cookie == learn->cookie && c->table_id == learn->table_id) { | |
2949 | c->n += delta; | |
2950 | ovs_assert(c->n >= 0); | |
2951 | ||
2952 | if (!c->n) { | |
2953 | hmap_remove(&ofproto->learned_cookies, &c->u.hmap_node); | |
2954 | list_push_back(dead_cookies, &c->u.list_node); | |
2955 | } | |
2956 | ||
2957 | return; | |
2958 | } | |
2959 | } | |
2960 | ||
2961 | ovs_assert(delta > 0); | |
2962 | c = xmalloc(sizeof *c); | |
2963 | hmap_insert(&ofproto->learned_cookies, &c->u.hmap_node, hash); | |
2964 | c->cookie = learn->cookie; | |
2965 | c->table_id = learn->table_id; | |
2966 | c->n = delta; | |
2967 | } | |
2968 | ||
2969 | static const struct ofpact_learn * | |
2970 | next_learn_with_delete(const struct rule_actions *actions, | |
2971 | const struct ofpact_learn *start) | |
2972 | { | |
2973 | const struct ofpact *pos; | |
2974 | ||
2975 | for (pos = start ? ofpact_next(&start->ofpact) : actions->ofpacts; | |
2976 | pos < ofpact_end(actions->ofpacts, actions->ofpacts_len); | |
2977 | pos = ofpact_next(pos)) { | |
2978 | if (pos->type == OFPACT_LEARN) { | |
2979 | const struct ofpact_learn *learn = ofpact_get_LEARN(pos); | |
2980 | if (learn->flags & NX_LEARN_F_DELETE_LEARNED) { | |
2981 | return learn; | |
2982 | } | |
2983 | } | |
2984 | } | |
2985 | ||
2986 | return NULL; | |
2987 | } | |
2988 | ||
2989 | static void | |
2990 | learned_cookies_update__(struct ofproto *ofproto, | |
2991 | const struct rule_actions *actions, | |
ca6ba700 | 2992 | int delta, struct ovs_list *dead_cookies) |
35f48b8b BP |
2993 | OVS_REQUIRES(ofproto_mutex) |
2994 | { | |
2995 | if (actions->has_learn_with_delete) { | |
2996 | const struct ofpact_learn *learn; | |
2997 | ||
2998 | for (learn = next_learn_with_delete(actions, NULL); learn; | |
2999 | learn = next_learn_with_delete(actions, learn)) { | |
3000 | learned_cookies_update_one__(ofproto, learn, delta, dead_cookies); | |
3001 | } | |
3002 | } | |
3003 | } | |
3004 | ||
3005 | static void | |
3006 | learned_cookies_inc(struct ofproto *ofproto, | |
3007 | const struct rule_actions *actions) | |
3008 | OVS_REQUIRES(ofproto_mutex) | |
3009 | { | |
3010 | learned_cookies_update__(ofproto, actions, +1, NULL); | |
3011 | } | |
3012 | ||
3013 | static void | |
3014 | learned_cookies_dec(struct ofproto *ofproto, | |
3015 | const struct rule_actions *actions, | |
ca6ba700 | 3016 | struct ovs_list *dead_cookies) |
35f48b8b BP |
3017 | OVS_REQUIRES(ofproto_mutex) |
3018 | { | |
3019 | learned_cookies_update__(ofproto, actions, -1, dead_cookies); | |
3020 | } | |
3021 | ||
3022 | static void | |
ca6ba700 | 3023 | learned_cookies_flush(struct ofproto *ofproto, struct ovs_list *dead_cookies) |
35f48b8b BP |
3024 | OVS_REQUIRES(ofproto_mutex) |
3025 | { | |
5f03c983 | 3026 | struct learned_cookie *c; |
35f48b8b | 3027 | |
5f03c983 | 3028 | LIST_FOR_EACH_POP (c, u.list_node, dead_cookies) { |
35f48b8b BP |
3029 | struct rule_criteria criteria; |
3030 | struct rule_collection rules; | |
3031 | struct match match; | |
3032 | ||
3033 | match_init_catchall(&match); | |
3034 | rule_criteria_init(&criteria, c->table_id, &match, 0, | |
3035 | c->cookie, OVS_BE64_MAX, OFPP_ANY, OFPG_ANY); | |
3036 | rule_criteria_require_rw(&criteria, false); | |
3037 | collect_rules_loose(ofproto, &criteria, &rules); | |
3038 | delete_flows__(&rules, OFPRR_DELETE, NULL); | |
3039 | rule_criteria_destroy(&criteria); | |
3040 | rule_collection_destroy(&rules); | |
3041 | ||
35f48b8b BP |
3042 | free(c); |
3043 | } | |
3044 | } | |
3045 | \f | |
90bf1e07 | 3046 | static enum ofperr |
d1e2cf21 | 3047 | handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3048 | { |
b0421aa2 | 3049 | ofconn_send_reply(ofconn, make_echo_reply(oh)); |
064af421 | 3050 | return 0; |
064af421 BP |
3051 | } |
3052 | ||
3c1bb396 BP |
3053 | static void |
3054 | query_tables(struct ofproto *ofproto, | |
3055 | struct ofputil_table_features **featuresp, | |
3056 | struct ofputil_table_stats **statsp) | |
3057 | { | |
178742f9 BP |
3058 | struct mf_bitmap rw_fields = oxm_writable_fields(); |
3059 | struct mf_bitmap match = oxm_matchable_fields(); | |
3060 | struct mf_bitmap mask = oxm_maskable_fields(); | |
3c1bb396 BP |
3061 | |
3062 | struct ofputil_table_features *features; | |
3063 | struct ofputil_table_stats *stats; | |
3064 | int i; | |
3065 | ||
3c1bb396 BP |
3066 | features = *featuresp = xcalloc(ofproto->n_tables, sizeof *features); |
3067 | for (i = 0; i < ofproto->n_tables; i++) { | |
3068 | struct ofputil_table_features *f = &features[i]; | |
3069 | ||
3070 | f->table_id = i; | |
3071 | sprintf(f->name, "table%d", i); | |
3072 | f->metadata_match = OVS_BE64_MAX; | |
3073 | f->metadata_write = OVS_BE64_MAX; | |
afcea9ea | 3074 | atomic_read_relaxed(&ofproto->tables[i].miss_config, &f->miss_config); |
3c1bb396 BP |
3075 | f->max_entries = 1000000; |
3076 | ||
5dc7516b BP |
3077 | bool more_tables = false; |
3078 | for (int j = i + 1; j < ofproto->n_tables; j++) { | |
3079 | if (!(ofproto->tables[j].flags & OFTABLE_HIDDEN)) { | |
3080 | bitmap_set1(f->nonmiss.next, j); | |
3081 | more_tables = true; | |
3082 | } | |
3083 | } | |
3c1bb396 | 3084 | f->nonmiss.instructions = (1u << N_OVS_INSTRUCTIONS) - 1; |
5dc7516b | 3085 | if (!more_tables) { |
3c1bb396 BP |
3086 | f->nonmiss.instructions &= ~(1u << OVSINST_OFPIT11_GOTO_TABLE); |
3087 | } | |
3088 | f->nonmiss.write.ofpacts = (UINT64_C(1) << N_OFPACTS) - 1; | |
3089 | f->nonmiss.write.set_fields = rw_fields; | |
3090 | f->nonmiss.apply = f->nonmiss.write; | |
3091 | f->miss = f->nonmiss; | |
3092 | ||
3093 | f->match = match; | |
3094 | f->mask = mask; | |
3095 | f->wildcard = match; | |
3096 | } | |
3097 | ||
3098 | if (statsp) { | |
3099 | stats = *statsp = xcalloc(ofproto->n_tables, sizeof *stats); | |
3100 | for (i = 0; i < ofproto->n_tables; i++) { | |
3101 | struct ofputil_table_stats *s = &stats[i]; | |
3102 | struct classifier *cls = &ofproto->tables[i].cls; | |
3103 | ||
3104 | s->table_id = i; | |
3105 | s->active_count = classifier_count(cls); | |
3fbbcba7 BP |
3106 | if (i == 0) { |
3107 | s->active_count -= connmgr_count_hidden_rules( | |
3108 | ofproto->connmgr); | |
3109 | } | |
3c1bb396 BP |
3110 | } |
3111 | } else { | |
3112 | stats = NULL; | |
3113 | } | |
3114 | ||
3115 | ofproto->ofproto_class->query_tables(ofproto, features, stats); | |
3116 | ||
3117 | for (i = 0; i < ofproto->n_tables; i++) { | |
3118 | const struct oftable *table = &ofproto->tables[i]; | |
3119 | struct ofputil_table_features *f = &features[i]; | |
3120 | ||
3121 | if (table->name) { | |
3122 | ovs_strzcpy(f->name, table->name, sizeof f->name); | |
3123 | } | |
3124 | ||
3125 | if (table->max_flows < f->max_entries) { | |
3126 | f->max_entries = table->max_flows; | |
3127 | } | |
3128 | } | |
3129 | } | |
3130 | ||
3131 | static void | |
3132 | query_switch_features(struct ofproto *ofproto, | |
3133 | bool *arp_match_ip, uint64_t *ofpacts) | |
3134 | { | |
3135 | struct ofputil_table_features *features, *f; | |
3136 | ||
3137 | *arp_match_ip = false; | |
3138 | *ofpacts = 0; | |
3139 | ||
3140 | query_tables(ofproto, &features, NULL); | |
3141 | for (f = features; f < &features[ofproto->n_tables]; f++) { | |
3142 | *ofpacts |= f->nonmiss.apply.ofpacts | f->miss.apply.ofpacts; | |
3143 | if (bitmap_is_set(f->match.bm, MFF_ARP_SPA) || | |
3144 | bitmap_is_set(f->match.bm, MFF_ARP_TPA)) { | |
3145 | *arp_match_ip = true; | |
3146 | } | |
3147 | } | |
3148 | free(features); | |
3149 | ||
3150 | /* Sanity check. */ | |
3151 | ovs_assert(*ofpacts & (UINT64_C(1) << OFPACT_OUTPUT)); | |
3152 | } | |
3153 | ||
90bf1e07 | 3154 | static enum ofperr |
d1e2cf21 | 3155 | handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3156 | { |
64ff1d96 | 3157 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
9e1fd49b | 3158 | struct ofputil_switch_features features; |
064af421 | 3159 | struct ofport *port; |
6c1491fb | 3160 | bool arp_match_ip; |
9e1fd49b | 3161 | struct ofpbuf *b; |
064af421 | 3162 | |
3c1bb396 | 3163 | query_switch_features(ofproto, &arp_match_ip, &features.ofpacts); |
064af421 | 3164 | |
9e1fd49b BP |
3165 | features.datapath_id = ofproto->datapath_id; |
3166 | features.n_buffers = pktbuf_capacity(); | |
adcf00ba | 3167 | features.n_tables = ofproto_get_n_visible_tables(ofproto); |
9e1fd49b | 3168 | features.capabilities = (OFPUTIL_C_FLOW_STATS | OFPUTIL_C_TABLE_STATS | |
4efe455d BP |
3169 | OFPUTIL_C_PORT_STATS | OFPUTIL_C_QUEUE_STATS | |
3170 | OFPUTIL_C_GROUP_STATS); | |
6c1491fb | 3171 | if (arp_match_ip) { |
9e1fd49b | 3172 | features.capabilities |= OFPUTIL_C_ARP_MATCH_IP; |
6c1491fb | 3173 | } |
2e1ae200 JR |
3174 | /* FIXME: Fill in proper features.auxiliary_id for auxiliary connections */ |
3175 | features.auxiliary_id = 0; | |
9e1fd49b BP |
3176 | b = ofputil_encode_switch_features(&features, ofconn_get_protocol(ofconn), |
3177 | oh->xid); | |
64ff1d96 | 3178 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
9e1fd49b | 3179 | ofputil_put_switch_features_port(&port->pp, b); |
064af421 | 3180 | } |
064af421 | 3181 | |
9e1fd49b | 3182 | ofconn_send_reply(ofconn, b); |
064af421 BP |
3183 | return 0; |
3184 | } | |
064af421 | 3185 | |
90bf1e07 | 3186 | static enum ofperr |
d1e2cf21 | 3187 | handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3188 | { |
64ff1d96 | 3189 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 | 3190 | struct ofp_switch_config *osc; |
f0fd1a17 | 3191 | enum ofp_config_flags flags; |
7257b535 | 3192 | struct ofpbuf *buf; |
959a2ecd | 3193 | |
064af421 | 3194 | /* Send reply. */ |
982697a4 BP |
3195 | buf = ofpraw_alloc_reply(OFPRAW_OFPT_GET_CONFIG_REPLY, oh, 0); |
3196 | osc = ofpbuf_put_uninit(buf, sizeof *osc); | |
f0fd1a17 | 3197 | flags = ofproto->frag_handling; |
2e1ae200 JR |
3198 | /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */ |
3199 | if (oh->version < OFP13_VERSION | |
3200 | && ofconn_get_invalid_ttl_to_controller(ofconn)) { | |
f0fd1a17 PS |
3201 | flags |= OFPC_INVALID_TTL_TO_CONTROLLER; |
3202 | } | |
3203 | osc->flags = htons(flags); | |
810605a2 | 3204 | osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn)); |
b0421aa2 | 3205 | ofconn_send_reply(ofconn, buf); |
2d70a31a | 3206 | |
064af421 BP |
3207 | return 0; |
3208 | } | |
064af421 | 3209 | |
90bf1e07 | 3210 | static enum ofperr |
982697a4 | 3211 | handle_set_config(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3212 | { |
982697a4 | 3213 | const struct ofp_switch_config *osc = ofpmsg_body(oh); |
64ff1d96 | 3214 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
d1e2cf21 | 3215 | uint16_t flags = ntohs(osc->flags); |
2d70a31a | 3216 | |
7257b535 | 3217 | if (ofconn_get_type(ofconn) != OFCONN_PRIMARY |
f4f1ea7e | 3218 | || ofconn_get_role(ofconn) != OFPCR12_ROLE_SLAVE) { |
7257b535 BP |
3219 | enum ofp_config_flags cur = ofproto->frag_handling; |
3220 | enum ofp_config_flags next = flags & OFPC_FRAG_MASK; | |
3221 | ||
cb22974d | 3222 | ovs_assert((cur & OFPC_FRAG_MASK) == cur); |
7257b535 BP |
3223 | if (cur != next) { |
3224 | if (ofproto->ofproto_class->set_frag_handling(ofproto, next)) { | |
3225 | ofproto->frag_handling = next; | |
3226 | } else { | |
3227 | VLOG_WARN_RL(&rl, "%s: unsupported fragment handling mode %s", | |
3228 | ofproto->name, | |
3229 | ofputil_frag_handling_to_string(next)); | |
3230 | } | |
064af421 BP |
3231 | } |
3232 | } | |
2e1ae200 | 3233 | /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */ |
f0fd1a17 | 3234 | ofconn_set_invalid_ttl_to_controller(ofconn, |
2e1ae200 JR |
3235 | (oh->version < OFP13_VERSION |
3236 | && flags & OFPC_INVALID_TTL_TO_CONTROLLER)); | |
ebe482fd | 3237 | |
810605a2 | 3238 | ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len)); |
0ad9b732 | 3239 | |
064af421 | 3240 | return 0; |
064af421 BP |
3241 | } |
3242 | ||
9deba63b | 3243 | /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow |
90bf1e07 BP |
3244 | * error message code for the caller to propagate upward. Otherwise, returns |
3245 | * 0. | |
3246 | * | |
3247 | * The log message mentions 'msg_type'. */ | |
3248 | static enum ofperr | |
3249 | reject_slave_controller(struct ofconn *ofconn) | |
9deba63b | 3250 | { |
1ce0a5fa | 3251 | if (ofconn_get_type(ofconn) == OFCONN_PRIMARY |
f4f1ea7e | 3252 | && ofconn_get_role(ofconn) == OFPCR12_ROLE_SLAVE) { |
20e4ec1a | 3253 | return OFPERR_OFPBRC_IS_SLAVE; |
9deba63b BP |
3254 | } else { |
3255 | return 0; | |
3256 | } | |
3257 | } | |
3258 | ||
7e9f8266 BP |
3259 | /* Checks that the 'ofpacts_len' bytes of action in 'ofpacts' are appropriate |
3260 | * for 'ofproto': | |
3261 | * | |
3262 | * - If they use a meter, then 'ofproto' has that meter configured. | |
3263 | * | |
3264 | * - If they use any groups, then 'ofproto' has that group configured. | |
3265 | * | |
3266 | * Returns 0 if successful, otherwise an OpenFlow error. */ | |
9cae45dc JR |
3267 | static enum ofperr |
3268 | ofproto_check_ofpacts(struct ofproto *ofproto, | |
7e9f8266 | 3269 | const struct ofpact ofpacts[], size_t ofpacts_len) |
9cae45dc | 3270 | { |
84d68566 | 3271 | const struct ofpact *a; |
9cae45dc JR |
3272 | uint32_t mid; |
3273 | ||
7e9f8266 BP |
3274 | mid = ofpacts_get_meter(ofpacts, ofpacts_len); |
3275 | if (mid && get_provider_meter_id(ofproto, mid) == UINT32_MAX) { | |
3276 | return OFPERR_OFPMMFC_INVALID_METER; | |
9cae45dc JR |
3277 | } |
3278 | ||
84d68566 | 3279 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
7e9f8266 BP |
3280 | if (a->type == OFPACT_GROUP |
3281 | && !ofproto_group_exists(ofproto, ofpact_get_GROUP(a)->group_id)) { | |
3282 | return OFPERR_OFPBAC_BAD_OUT_GROUP; | |
84d68566 SH |
3283 | } |
3284 | } | |
3285 | ||
9cae45dc JR |
3286 | return 0; |
3287 | } | |
3288 | ||
90bf1e07 | 3289 | static enum ofperr |
982697a4 | 3290 | handle_packet_out(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3291 | { |
64ff1d96 | 3292 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
c6a93eb7 | 3293 | struct ofputil_packet_out po; |
cf62fa4c | 3294 | struct dp_packet *payload; |
f25d0cf3 BP |
3295 | uint64_t ofpacts_stub[1024 / 8]; |
3296 | struct ofpbuf ofpacts; | |
ae412e7d | 3297 | struct flow flow; |
90bf1e07 | 3298 | enum ofperr error; |
064af421 | 3299 | |
ac51afaf BP |
3300 | COVERAGE_INC(ofproto_packet_out); |
3301 | ||
76589937 | 3302 | error = reject_slave_controller(ofconn); |
9deba63b | 3303 | if (error) { |
f25d0cf3 | 3304 | goto exit; |
9deba63b BP |
3305 | } |
3306 | ||
c6a93eb7 | 3307 | /* Decode message. */ |
f25d0cf3 | 3308 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
982697a4 | 3309 | error = ofputil_decode_packet_out(&po, oh, &ofpacts); |
064af421 | 3310 | if (error) { |
f25d0cf3 | 3311 | goto exit_free_ofpacts; |
064af421 | 3312 | } |
430dbb14 | 3313 | if (ofp_to_u16(po.in_port) >= p->max_ports |
4e022ec0 | 3314 | && ofp_to_u16(po.in_port) < ofp_to_u16(OFPP_MAX)) { |
2e1bfcb6 | 3315 | error = OFPERR_OFPBRC_BAD_PORT; |
91858960 BP |
3316 | goto exit_free_ofpacts; |
3317 | } | |
064af421 | 3318 | |
ac51afaf | 3319 | /* Get payload. */ |
c6a93eb7 BP |
3320 | if (po.buffer_id != UINT32_MAX) { |
3321 | error = ofconn_pktbuf_retrieve(ofconn, po.buffer_id, &payload, NULL); | |
3322 | if (error || !payload) { | |
f25d0cf3 | 3323 | goto exit_free_ofpacts; |
064af421 | 3324 | } |
064af421 | 3325 | } else { |
bb622f82 | 3326 | /* Ensure that the L3 header is 32-bit aligned. */ |
cf62fa4c | 3327 | payload = dp_packet_clone_data_with_headroom(po.packet, po.packet_len, 2); |
e1154f71 BP |
3328 | } |
3329 | ||
548de4dd | 3330 | /* Verify actions against packet, then send packet if successful. */ |
cf62fa4c | 3331 | flow_extract(payload, &flow); |
b5e7e61a | 3332 | flow.in_port.ofp_port = po.in_port; |
7e9f8266 | 3333 | error = ofproto_check_ofpacts(p, po.ofpacts, po.ofpacts_len); |
548de4dd BP |
3334 | if (!error) { |
3335 | error = p->ofproto_class->packet_out(p, payload, &flow, | |
3336 | po.ofpacts, po.ofpacts_len); | |
3337 | } | |
cf62fa4c | 3338 | dp_packet_delete(payload); |
abe529af | 3339 | |
f25d0cf3 BP |
3340 | exit_free_ofpacts: |
3341 | ofpbuf_uninit(&ofpacts); | |
3342 | exit: | |
abe529af | 3343 | return error; |
064af421 BP |
3344 | } |
3345 | ||
3346 | static void | |
2a6f78e0 | 3347 | update_port_config(struct ofconn *ofconn, struct ofport *port, |
9e1fd49b BP |
3348 | enum ofputil_port_config config, |
3349 | enum ofputil_port_config mask) | |
064af421 | 3350 | { |
2a6f78e0 | 3351 | enum ofputil_port_config toggle = (config ^ port->pp.config) & mask; |
abe529af | 3352 | |
2a6f78e0 BP |
3353 | if (toggle & OFPUTIL_PC_PORT_DOWN |
3354 | && (config & OFPUTIL_PC_PORT_DOWN | |
3355 | ? netdev_turn_flags_off(port->netdev, NETDEV_UP, NULL) | |
3356 | : netdev_turn_flags_on(port->netdev, NETDEV_UP, NULL))) { | |
3357 | /* We tried to bring the port up or down, but it failed, so don't | |
3358 | * update the "down" bit. */ | |
9e1fd49b | 3359 | toggle &= ~OFPUTIL_PC_PORT_DOWN; |
064af421 | 3360 | } |
abe529af | 3361 | |
2a6f78e0 BP |
3362 | if (toggle) { |
3363 | enum ofputil_port_config old_config = port->pp.config; | |
3364 | port->pp.config ^= toggle; | |
abe529af | 3365 | port->ofproto->ofproto_class->port_reconfigured(port, old_config); |
2a6f78e0 BP |
3366 | connmgr_send_port_status(port->ofproto->connmgr, ofconn, &port->pp, |
3367 | OFPPR_MODIFY); | |
064af421 BP |
3368 | } |
3369 | } | |
3370 | ||
90bf1e07 | 3371 | static enum ofperr |
d1e2cf21 | 3372 | handle_port_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3373 | { |
64ff1d96 | 3374 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
9e1fd49b | 3375 | struct ofputil_port_mod pm; |
064af421 | 3376 | struct ofport *port; |
9e1fd49b | 3377 | enum ofperr error; |
064af421 | 3378 | |
76589937 | 3379 | error = reject_slave_controller(ofconn); |
9deba63b BP |
3380 | if (error) { |
3381 | return error; | |
3382 | } | |
064af421 | 3383 | |
18cc69d9 | 3384 | error = ofputil_decode_port_mod(oh, &pm, false); |
9e1fd49b BP |
3385 | if (error) { |
3386 | return error; | |
3387 | } | |
3388 | ||
3389 | port = ofproto_get_port(p, pm.port_no); | |
064af421 | 3390 | if (!port) { |
90bf1e07 | 3391 | return OFPERR_OFPPMFC_BAD_PORT; |
9e1fd49b | 3392 | } else if (!eth_addr_equals(port->pp.hw_addr, pm.hw_addr)) { |
90bf1e07 | 3393 | return OFPERR_OFPPMFC_BAD_HW_ADDR; |
064af421 | 3394 | } else { |
2a6f78e0 | 3395 | update_port_config(ofconn, port, pm.config, pm.mask); |
9e1fd49b BP |
3396 | if (pm.advertise) { |
3397 | netdev_set_advertisements(port->netdev, pm.advertise); | |
064af421 BP |
3398 | } |
3399 | } | |
3400 | return 0; | |
3401 | } | |
3402 | ||
90bf1e07 | 3403 | static enum ofperr |
3269c562 | 3404 | handle_desc_stats_request(struct ofconn *ofconn, |
982697a4 | 3405 | const struct ofp_header *request) |
064af421 | 3406 | { |
061bfea4 BP |
3407 | static const char *default_mfr_desc = "Nicira, Inc."; |
3408 | static const char *default_hw_desc = "Open vSwitch"; | |
3409 | static const char *default_sw_desc = VERSION; | |
3410 | static const char *default_serial_desc = "None"; | |
3411 | static const char *default_dp_desc = "None"; | |
3412 | ||
64ff1d96 | 3413 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 BP |
3414 | struct ofp_desc_stats *ods; |
3415 | struct ofpbuf *msg; | |
3416 | ||
982697a4 BP |
3417 | msg = ofpraw_alloc_stats_reply(request, 0); |
3418 | ods = ofpbuf_put_zeros(msg, sizeof *ods); | |
061bfea4 BP |
3419 | ovs_strlcpy(ods->mfr_desc, p->mfr_desc ? p->mfr_desc : default_mfr_desc, |
3420 | sizeof ods->mfr_desc); | |
3421 | ovs_strlcpy(ods->hw_desc, p->hw_desc ? p->hw_desc : default_hw_desc, | |
3422 | sizeof ods->hw_desc); | |
3423 | ovs_strlcpy(ods->sw_desc, p->sw_desc ? p->sw_desc : default_sw_desc, | |
3424 | sizeof ods->sw_desc); | |
3425 | ovs_strlcpy(ods->serial_num, | |
3426 | p->serial_desc ? p->serial_desc : default_serial_desc, | |
3427 | sizeof ods->serial_num); | |
3428 | ovs_strlcpy(ods->dp_desc, p->dp_desc ? p->dp_desc : default_dp_desc, | |
3429 | sizeof ods->dp_desc); | |
b0421aa2 | 3430 | ofconn_send_reply(ofconn, msg); |
064af421 BP |
3431 | |
3432 | return 0; | |
3433 | } | |
3434 | ||
90bf1e07 | 3435 | static enum ofperr |
3269c562 | 3436 | handle_table_stats_request(struct ofconn *ofconn, |
982697a4 | 3437 | const struct ofp_header *request) |
064af421 | 3438 | { |
3c1bb396 BP |
3439 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
3440 | struct ofputil_table_features *features; | |
08d1e234 | 3441 | struct ofputil_table_stats *stats; |
3c1bb396 | 3442 | struct ofpbuf *reply; |
6c1491fb | 3443 | size_t i; |
064af421 | 3444 | |
3c1bb396 | 3445 | query_tables(ofproto, &features, &stats); |
254750ce | 3446 | |
3c1bb396 BP |
3447 | reply = ofputil_encode_table_stats_reply(request); |
3448 | for (i = 0; i < ofproto->n_tables; i++) { | |
3449 | if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) { | |
3450 | ofputil_append_table_stats_reply(reply, &stats[i], &features[i]); | |
254750ce BP |
3451 | } |
3452 | } | |
3c1bb396 | 3453 | ofconn_send_reply(ofconn, reply); |
254750ce | 3454 | |
3c1bb396 | 3455 | free(features); |
08d1e234 | 3456 | free(stats); |
307975da | 3457 | |
064af421 BP |
3458 | return 0; |
3459 | } | |
3460 | ||
3c4e10fb BP |
3461 | static enum ofperr |
3462 | handle_table_features_request(struct ofconn *ofconn, | |
3463 | const struct ofp_header *request) | |
3464 | { | |
3465 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
3466 | struct ofputil_table_features *features; | |
ca6ba700 | 3467 | struct ovs_list replies; |
3c4e10fb BP |
3468 | struct ofpbuf msg; |
3469 | size_t i; | |
3470 | ||
3471 | ofpbuf_use_const(&msg, request, ntohs(request->length)); | |
3472 | ofpraw_pull_assert(&msg); | |
6fd6ed71 | 3473 | if (msg.size || ofpmp_more(request)) { |
3c4e10fb BP |
3474 | return OFPERR_OFPTFFC_EPERM; |
3475 | } | |
3476 | ||
3477 | query_tables(ofproto, &features, NULL); | |
3478 | ||
3479 | ofpmp_init(&replies, request); | |
3480 | for (i = 0; i < ofproto->n_tables; i++) { | |
3481 | if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) { | |
3482 | ofputil_append_table_features_reply(&features[i], &replies); | |
3483 | } | |
3484 | } | |
3485 | ofconn_send_replies(ofconn, &replies); | |
3486 | ||
3487 | free(features); | |
3488 | ||
3489 | return 0; | |
3490 | } | |
3491 | ||
abaad8cf | 3492 | static void |
ca6ba700 | 3493 | append_port_stat(struct ofport *port, struct ovs_list *replies) |
abaad8cf | 3494 | { |
f8e4867e | 3495 | struct ofputil_port_stats ops = { .port_no = port->pp.port_no }; |
abaad8cf | 3496 | |
65e0be10 BP |
3497 | calc_duration(port->created, time_msec(), |
3498 | &ops.duration_sec, &ops.duration_nsec); | |
3499 | ||
d295e8e9 JP |
3500 | /* Intentionally ignore return value, since errors will set |
3501 | * 'stats' to all-1s, which is correct for OpenFlow, and | |
abaad8cf | 3502 | * netdev_get_stats() will log errors. */ |
f8e4867e SH |
3503 | ofproto_port_get_stats(port, &ops.stats); |
3504 | ||
3505 | ofputil_append_port_stat(replies, &ops); | |
abaad8cf JP |
3506 | } |
3507 | ||
70ae4f93 BP |
3508 | static void |
3509 | handle_port_request(struct ofconn *ofconn, | |
3510 | const struct ofp_header *request, ofp_port_t port_no, | |
ca6ba700 | 3511 | void (*cb)(struct ofport *, struct ovs_list *replies)) |
064af421 | 3512 | { |
70ae4f93 | 3513 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 | 3514 | struct ofport *port; |
ca6ba700 | 3515 | struct ovs_list replies; |
064af421 | 3516 | |
982697a4 | 3517 | ofpmp_init(&replies, request); |
7f05e7ab | 3518 | if (port_no != OFPP_ANY) { |
70ae4f93 | 3519 | port = ofproto_get_port(ofproto, port_no); |
abaad8cf | 3520 | if (port) { |
70ae4f93 | 3521 | cb(port, &replies); |
abaad8cf JP |
3522 | } |
3523 | } else { | |
70ae4f93 BP |
3524 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
3525 | cb(port, &replies); | |
abaad8cf | 3526 | } |
064af421 BP |
3527 | } |
3528 | ||
63f2140a | 3529 | ofconn_send_replies(ofconn, &replies); |
70ae4f93 BP |
3530 | } |
3531 | ||
3532 | static enum ofperr | |
3533 | handle_port_stats_request(struct ofconn *ofconn, | |
3534 | const struct ofp_header *request) | |
3535 | { | |
3536 | ofp_port_t port_no; | |
3537 | enum ofperr error; | |
3538 | ||
3539 | error = ofputil_decode_port_stats_request(request, &port_no); | |
3540 | if (!error) { | |
3541 | handle_port_request(ofconn, request, port_no, append_port_stat); | |
3542 | } | |
3543 | return error; | |
3544 | } | |
3545 | ||
3546 | static void | |
ca6ba700 | 3547 | append_port_desc(struct ofport *port, struct ovs_list *replies) |
70ae4f93 BP |
3548 | { |
3549 | ofputil_append_port_desc_stats_reply(&port->pp, replies); | |
064af421 BP |
3550 | } |
3551 | ||
2be393ed JP |
3552 | static enum ofperr |
3553 | handle_port_desc_stats_request(struct ofconn *ofconn, | |
982697a4 | 3554 | const struct ofp_header *request) |
2be393ed | 3555 | { |
70ae4f93 BP |
3556 | ofp_port_t port_no; |
3557 | enum ofperr error; | |
2be393ed | 3558 | |
70ae4f93 BP |
3559 | error = ofputil_decode_port_desc_stats_request(request, &port_no); |
3560 | if (!error) { | |
3561 | handle_port_request(ofconn, request, port_no, append_port_desc); | |
2be393ed | 3562 | } |
70ae4f93 | 3563 | return error; |
2be393ed JP |
3564 | } |
3565 | ||
98eaac36 JR |
3566 | static uint32_t |
3567 | hash_cookie(ovs_be64 cookie) | |
3568 | { | |
965607c8 | 3569 | return hash_uint64((OVS_FORCE uint64_t)cookie); |
98eaac36 JR |
3570 | } |
3571 | ||
3572 | static void | |
3573 | cookies_insert(struct ofproto *ofproto, struct rule *rule) | |
2c916028 | 3574 | OVS_REQUIRES(ofproto_mutex) |
98eaac36 JR |
3575 | { |
3576 | hindex_insert(&ofproto->cookies, &rule->cookie_node, | |
3577 | hash_cookie(rule->flow_cookie)); | |
3578 | } | |
3579 | ||
3580 | static void | |
3581 | cookies_remove(struct ofproto *ofproto, struct rule *rule) | |
2c916028 | 3582 | OVS_REQUIRES(ofproto_mutex) |
98eaac36 JR |
3583 | { |
3584 | hindex_remove(&ofproto->cookies, &rule->cookie_node); | |
3585 | } | |
3586 | ||
c6ebb8fb | 3587 | static void |
65e0be10 BP |
3588 | calc_duration(long long int start, long long int now, |
3589 | uint32_t *sec, uint32_t *nsec) | |
c6ebb8fb | 3590 | { |
f27f2134 | 3591 | long long int msecs = now - start; |
588cd7b5 BP |
3592 | *sec = msecs / 1000; |
3593 | *nsec = (msecs % 1000) * (1000 * 1000); | |
3594 | } | |
3595 | ||
48266274 | 3596 | /* Checks whether 'table_id' is 0xff or a valid table ID in 'ofproto'. Returns |
554764d1 SH |
3597 | * true if 'table_id' is OK, false otherwise. */ |
3598 | static bool | |
48266274 BP |
3599 | check_table_id(const struct ofproto *ofproto, uint8_t table_id) |
3600 | { | |
554764d1 | 3601 | return table_id == OFPTT_ALL || table_id < ofproto->n_tables; |
48266274 BP |
3602 | } |
3603 | ||
5c67e4af | 3604 | static struct oftable * |
d4ce8a49 | 3605 | next_visible_table(const struct ofproto *ofproto, uint8_t table_id) |
5c67e4af BP |
3606 | { |
3607 | struct oftable *table; | |
3608 | ||
3609 | for (table = &ofproto->tables[table_id]; | |
3610 | table < &ofproto->tables[ofproto->n_tables]; | |
3611 | table++) { | |
3612 | if (!(table->flags & OFTABLE_HIDDEN)) { | |
3613 | return table; | |
3614 | } | |
3615 | } | |
3616 | ||
3617 | return NULL; | |
3618 | } | |
3619 | ||
d0918789 | 3620 | static struct oftable * |
d4ce8a49 | 3621 | first_matching_table(const struct ofproto *ofproto, uint8_t table_id) |
064af421 | 3622 | { |
6c1491fb | 3623 | if (table_id == 0xff) { |
5c67e4af | 3624 | return next_visible_table(ofproto, 0); |
6c1491fb BP |
3625 | } else if (table_id < ofproto->n_tables) { |
3626 | return &ofproto->tables[table_id]; | |
a02e5331 | 3627 | } else { |
6c1491fb | 3628 | return NULL; |
a02e5331 | 3629 | } |
064af421 BP |
3630 | } |
3631 | ||
d0918789 | 3632 | static struct oftable * |
d4ce8a49 BP |
3633 | next_matching_table(const struct ofproto *ofproto, |
3634 | const struct oftable *table, uint8_t table_id) | |
6c1491fb | 3635 | { |
5c67e4af BP |
3636 | return (table_id == 0xff |
3637 | ? next_visible_table(ofproto, (table - ofproto->tables) + 1) | |
6c1491fb BP |
3638 | : NULL); |
3639 | } | |
3640 | ||
d0918789 | 3641 | /* Assigns TABLE to each oftable, in turn, that matches TABLE_ID in OFPROTO: |
6c1491fb BP |
3642 | * |
3643 | * - If TABLE_ID is 0xff, this iterates over every classifier table in | |
5c67e4af | 3644 | * OFPROTO, skipping tables marked OFTABLE_HIDDEN. |
6c1491fb BP |
3645 | * |
3646 | * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates | |
5c67e4af BP |
3647 | * only once, for that table. (This can be used to access tables marked |
3648 | * OFTABLE_HIDDEN.) | |
6c1491fb | 3649 | * |
48266274 BP |
3650 | * - Otherwise, TABLE_ID isn't valid for OFPROTO, so the loop won't be |
3651 | * entered at all. (Perhaps you should have validated TABLE_ID with | |
3652 | * check_table_id().) | |
6c1491fb BP |
3653 | * |
3654 | * All parameters are evaluated multiple times. | |
3655 | */ | |
d0918789 BP |
3656 | #define FOR_EACH_MATCHING_TABLE(TABLE, TABLE_ID, OFPROTO) \ |
3657 | for ((TABLE) = first_matching_table(OFPROTO, TABLE_ID); \ | |
3658 | (TABLE) != NULL; \ | |
3659 | (TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID)) | |
6c1491fb | 3660 | |
a9b22b7f BP |
3661 | /* Initializes 'criteria' in a straightforward way based on the other |
3662 | * parameters. | |
3663 | * | |
dd51dae2 BP |
3664 | * By default, the criteria include flows that are read-only, on the assumption |
3665 | * that the collected flows won't be modified. Call rule_criteria_require_rw() | |
3666 | * if flows will be modified. | |
3667 | * | |
a9b22b7f BP |
3668 | * For "loose" matching, the 'priority' parameter is unimportant and may be |
3669 | * supplied as 0. */ | |
3670 | static void | |
3671 | rule_criteria_init(struct rule_criteria *criteria, uint8_t table_id, | |
eb391b76 | 3672 | const struct match *match, int priority, |
a9b22b7f BP |
3673 | ovs_be64 cookie, ovs_be64 cookie_mask, |
3674 | ofp_port_t out_port, uint32_t out_group) | |
3675 | { | |
3676 | criteria->table_id = table_id; | |
3677 | cls_rule_init(&criteria->cr, match, priority); | |
3678 | criteria->cookie = cookie; | |
3679 | criteria->cookie_mask = cookie_mask; | |
3680 | criteria->out_port = out_port; | |
3681 | criteria->out_group = out_group; | |
dd51dae2 BP |
3682 | |
3683 | /* We ordinarily want to skip hidden rules, but there has to be a way for | |
3684 | * code internal to OVS to modify and delete them, so if the criteria | |
3685 | * specify a priority that can only be for a hidden flow, then allow hidden | |
3686 | * rules to be selected. (This doesn't allow OpenFlow clients to meddle | |
3687 | * with hidden flows because OpenFlow uses only a 16-bit field to specify | |
3688 | * priority.) */ | |
3689 | criteria->include_hidden = priority > UINT16_MAX; | |
3690 | ||
3691 | /* We assume that the criteria are being used to collect flows for reading | |
3692 | * but not modification. Thus, we should collect read-only flows. */ | |
3693 | criteria->include_readonly = true; | |
3694 | } | |
3695 | ||
3696 | /* By default, criteria initialized by rule_criteria_init() will match flows | |
3697 | * that are read-only, on the assumption that the collected flows won't be | |
3698 | * modified. Call this function to match only flows that are be modifiable. | |
3699 | * | |
3700 | * Specify 'can_write_readonly' as false in ordinary circumstances, true if the | |
3701 | * caller has special privileges that allow it to modify even "read-only" | |
3702 | * flows. */ | |
3703 | static void | |
3704 | rule_criteria_require_rw(struct rule_criteria *criteria, | |
3705 | bool can_write_readonly) | |
3706 | { | |
3707 | criteria->include_readonly = can_write_readonly; | |
a9b22b7f BP |
3708 | } |
3709 | ||
3710 | static void | |
3711 | rule_criteria_destroy(struct rule_criteria *criteria) | |
3712 | { | |
3713 | cls_rule_destroy(&criteria->cr); | |
3714 | } | |
3715 | ||
a8e547c1 BP |
3716 | void |
3717 | rule_collection_init(struct rule_collection *rules) | |
3718 | { | |
3719 | rules->rules = rules->stub; | |
3720 | rules->n = 0; | |
3721 | rules->capacity = ARRAY_SIZE(rules->stub); | |
3722 | } | |
3723 | ||
3724 | void | |
3725 | rule_collection_add(struct rule_collection *rules, struct rule *rule) | |
3726 | { | |
3727 | if (rules->n >= rules->capacity) { | |
3728 | size_t old_size, new_size; | |
3729 | ||
3730 | old_size = rules->capacity * sizeof *rules->rules; | |
3731 | rules->capacity *= 2; | |
3732 | new_size = rules->capacity * sizeof *rules->rules; | |
3733 | ||
3734 | if (rules->rules == rules->stub) { | |
3735 | rules->rules = xmalloc(new_size); | |
3736 | memcpy(rules->rules, rules->stub, old_size); | |
3737 | } else { | |
3738 | rules->rules = xrealloc(rules->rules, new_size); | |
3739 | } | |
3740 | } | |
3741 | ||
3742 | rules->rules[rules->n++] = rule; | |
3743 | } | |
3744 | ||
15aaf599 BP |
3745 | void |
3746 | rule_collection_ref(struct rule_collection *rules) | |
3747 | OVS_REQUIRES(ofproto_mutex) | |
3748 | { | |
3749 | size_t i; | |
3750 | ||
3751 | for (i = 0; i < rules->n; i++) { | |
3752 | ofproto_rule_ref(rules->rules[i]); | |
3753 | } | |
3754 | } | |
3755 | ||
3756 | void | |
3757 | rule_collection_unref(struct rule_collection *rules) | |
3758 | { | |
3759 | size_t i; | |
3760 | ||
3761 | for (i = 0; i < rules->n; i++) { | |
3762 | ofproto_rule_unref(rules->rules[i]); | |
3763 | } | |
3764 | } | |
3765 | ||
a8e547c1 BP |
3766 | void |
3767 | rule_collection_destroy(struct rule_collection *rules) | |
3768 | { | |
3769 | if (rules->rules != rules->stub) { | |
3770 | free(rules->rules); | |
3771 | } | |
bfd3dbf6 BP |
3772 | |
3773 | /* Make repeated destruction harmless. */ | |
3774 | rule_collection_init(rules); | |
a8e547c1 BP |
3775 | } |
3776 | ||
dd51dae2 BP |
3777 | /* Checks whether 'rule' matches 'c' and, if so, adds it to 'rules'. This |
3778 | * function verifies most of the criteria in 'c' itself, but the caller must | |
3779 | * check 'c->cr' itself. | |
3780 | * | |
3781 | * Increments '*n_readonly' if 'rule' wasn't added because it's read-only (and | |
b20f4073 BP |
3782 | * 'c' only includes modifiable rules). */ |
3783 | static void | |
a9b22b7f | 3784 | collect_rule(struct rule *rule, const struct rule_criteria *c, |
dd51dae2 | 3785 | struct rule_collection *rules, size_t *n_readonly) |
15aaf599 | 3786 | OVS_REQUIRES(ofproto_mutex) |
6c1d7642 | 3787 | { |
dd51dae2 BP |
3788 | if ((c->table_id == rule->table_id || c->table_id == 0xff) |
3789 | && ofproto_rule_has_out_port(rule, c->out_port) | |
3790 | && ofproto_rule_has_out_group(rule, c->out_group) | |
3791 | && !((rule->flow_cookie ^ c->cookie) & c->cookie_mask) | |
3792 | && (!rule_is_hidden(rule) || c->include_hidden)) { | |
dd51dae2 | 3793 | /* Rule matches all the criteria... */ |
834fe5cb | 3794 | if (!rule_is_readonly(rule) || c->include_readonly) { |
dd51dae2 | 3795 | /* ...add it. */ |
a8e547c1 | 3796 | rule_collection_add(rules, rule); |
dd51dae2 BP |
3797 | } else { |
3798 | /* ...except it's read-only. */ | |
3799 | ++*n_readonly; | |
6c1d7642 | 3800 | } |
6c1d7642 BP |
3801 | } |
3802 | } | |
3803 | ||
a9b22b7f BP |
3804 | /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches |
3805 | * on classifiers rules are done in the "loose" way required for OpenFlow | |
3806 | * OFPFC_MODIFY and OFPFC_DELETE requests. Puts the selected rules on list | |
9ed18e46 BP |
3807 | * 'rules'. |
3808 | * | |
9ed18e46 | 3809 | * Returns 0 on success, otherwise an OpenFlow error code. */ |
90bf1e07 | 3810 | static enum ofperr |
a9b22b7f | 3811 | collect_rules_loose(struct ofproto *ofproto, |
a8e547c1 BP |
3812 | const struct rule_criteria *criteria, |
3813 | struct rule_collection *rules) | |
15aaf599 | 3814 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 3815 | { |
d0918789 | 3816 | struct oftable *table; |
554764d1 | 3817 | enum ofperr error = 0; |
dd51dae2 | 3818 | size_t n_readonly = 0; |
48266274 | 3819 | |
a8e547c1 BP |
3820 | rule_collection_init(rules); |
3821 | ||
554764d1 SH |
3822 | if (!check_table_id(ofproto, criteria->table_id)) { |
3823 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
a8e547c1 | 3824 | goto exit; |
48266274 | 3825 | } |
9ed18e46 | 3826 | |
b8266395 | 3827 | if (criteria->cookie_mask == OVS_BE64_MAX) { |
98eaac36 JR |
3828 | struct rule *rule; |
3829 | ||
a9b22b7f BP |
3830 | HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node, |
3831 | hash_cookie(criteria->cookie), | |
98eaac36 | 3832 | &ofproto->cookies) { |
a9b22b7f | 3833 | if (cls_rule_is_loose_match(&rule->cr, &criteria->cr.match)) { |
b20f4073 | 3834 | collect_rule(rule, criteria, rules, &n_readonly); |
98eaac36 JR |
3835 | } |
3836 | } | |
6c1d7642 | 3837 | } else { |
a9b22b7f | 3838 | FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) { |
6c1d7642 | 3839 | struct rule *rule; |
9ed18e46 | 3840 | |
5f0476ce | 3841 | CLS_FOR_EACH_TARGET (rule, cr, &table->cls, &criteria->cr) { |
b20f4073 | 3842 | collect_rule(rule, criteria, rules, &n_readonly); |
9ed18e46 BP |
3843 | } |
3844 | } | |
3845 | } | |
48d28ac1 | 3846 | |
a8e547c1 | 3847 | exit: |
dd51dae2 BP |
3848 | if (!error && !rules->n && n_readonly) { |
3849 | /* We didn't find any rules to modify. We did find some read-only | |
3850 | * rules that we're not allowed to modify, so report that. */ | |
3851 | error = OFPERR_OFPBRC_EPERM; | |
3852 | } | |
a8e547c1 BP |
3853 | if (error) { |
3854 | rule_collection_destroy(rules); | |
3855 | } | |
48d28ac1 | 3856 | return error; |
9ed18e46 BP |
3857 | } |
3858 | ||
a9b22b7f BP |
3859 | /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches |
3860 | * on classifiers rules are done in the "strict" way required for OpenFlow | |
3861 | * OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests. Puts the selected | |
3862 | * rules on list 'rules'. | |
9ed18e46 | 3863 | * |
9ed18e46 | 3864 | * Returns 0 on success, otherwise an OpenFlow error code. */ |
90bf1e07 | 3865 | static enum ofperr |
a9b22b7f | 3866 | collect_rules_strict(struct ofproto *ofproto, |
a8e547c1 BP |
3867 | const struct rule_criteria *criteria, |
3868 | struct rule_collection *rules) | |
15aaf599 | 3869 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 3870 | { |
d0918789 | 3871 | struct oftable *table; |
dd51dae2 | 3872 | size_t n_readonly = 0; |
d51c8b71 | 3873 | enum ofperr error = 0; |
48266274 | 3874 | |
a8e547c1 BP |
3875 | rule_collection_init(rules); |
3876 | ||
554764d1 SH |
3877 | if (!check_table_id(ofproto, criteria->table_id)) { |
3878 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
a8e547c1 | 3879 | goto exit; |
48266274 | 3880 | } |
9ed18e46 | 3881 | |
b8266395 | 3882 | if (criteria->cookie_mask == OVS_BE64_MAX) { |
98eaac36 JR |
3883 | struct rule *rule; |
3884 | ||
a9b22b7f BP |
3885 | HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node, |
3886 | hash_cookie(criteria->cookie), | |
98eaac36 | 3887 | &ofproto->cookies) { |
a9b22b7f | 3888 | if (cls_rule_equal(&rule->cr, &criteria->cr)) { |
b20f4073 | 3889 | collect_rule(rule, criteria, rules, &n_readonly); |
98eaac36 JR |
3890 | } |
3891 | } | |
6c1d7642 | 3892 | } else { |
a9b22b7f | 3893 | FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) { |
6c1d7642 | 3894 | struct rule *rule; |
9ed18e46 | 3895 | |
a9b22b7f BP |
3896 | rule = rule_from_cls_rule(classifier_find_rule_exactly( |
3897 | &table->cls, &criteria->cr)); | |
6c1d7642 | 3898 | if (rule) { |
b20f4073 | 3899 | collect_rule(rule, criteria, rules, &n_readonly); |
9ed18e46 BP |
3900 | } |
3901 | } | |
3902 | } | |
48d28ac1 | 3903 | |
a8e547c1 | 3904 | exit: |
b20f4073 BP |
3905 | if (!error && !rules->n && n_readonly) { |
3906 | /* We didn't find any rules to modify. We did find some read-only | |
3907 | * rules that we're not allowed to modify, so report that. */ | |
3908 | error = OFPERR_OFPBRC_EPERM; | |
3909 | } | |
a8e547c1 BP |
3910 | if (error) { |
3911 | rule_collection_destroy(rules); | |
3912 | } | |
6c1d7642 | 3913 | return error; |
9ed18e46 BP |
3914 | } |
3915 | ||
f27f2134 BP |
3916 | /* Returns 'age_ms' (a duration in milliseconds), converted to seconds and |
3917 | * forced into the range of a uint16_t. */ | |
3918 | static int | |
3919 | age_secs(long long int age_ms) | |
3920 | { | |
3921 | return (age_ms < 0 ? 0 | |
3922 | : age_ms >= UINT16_MAX * 1000 ? UINT16_MAX | |
3923 | : (unsigned int) age_ms / 1000); | |
3924 | } | |
3925 | ||
90bf1e07 | 3926 | static enum ofperr |
63f2140a | 3927 | handle_flow_stats_request(struct ofconn *ofconn, |
982697a4 | 3928 | const struct ofp_header *request) |
15aaf599 | 3929 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 3930 | { |
64ff1d96 | 3931 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 3932 | struct ofputil_flow_stats_request fsr; |
a9b22b7f | 3933 | struct rule_criteria criteria; |
a8e547c1 | 3934 | struct rule_collection rules; |
ca6ba700 | 3935 | struct ovs_list replies; |
90bf1e07 | 3936 | enum ofperr error; |
a8e547c1 | 3937 | size_t i; |
09246b99 | 3938 | |
982697a4 | 3939 | error = ofputil_decode_flow_stats_request(&fsr, request); |
09246b99 BP |
3940 | if (error) { |
3941 | return error; | |
3942 | } | |
3943 | ||
a9b22b7f BP |
3944 | rule_criteria_init(&criteria, fsr.table_id, &fsr.match, 0, fsr.cookie, |
3945 | fsr.cookie_mask, fsr.out_port, fsr.out_group); | |
15aaf599 BP |
3946 | |
3947 | ovs_mutex_lock(&ofproto_mutex); | |
a9b22b7f BP |
3948 | error = collect_rules_loose(ofproto, &criteria, &rules); |
3949 | rule_criteria_destroy(&criteria); | |
15aaf599 BP |
3950 | if (!error) { |
3951 | rule_collection_ref(&rules); | |
3952 | } | |
3953 | ovs_mutex_unlock(&ofproto_mutex); | |
3954 | ||
9ed18e46 BP |
3955 | if (error) { |
3956 | return error; | |
3957 | } | |
5ecc9d81 | 3958 | |
982697a4 | 3959 | ofpmp_init(&replies, request); |
a8e547c1 BP |
3960 | for (i = 0; i < rules.n; i++) { |
3961 | struct rule *rule = rules.rules[i]; | |
f27f2134 | 3962 | long long int now = time_msec(); |
9ed18e46 | 3963 | struct ofputil_flow_stats fs; |
15aaf599 | 3964 | long long int created, used, modified; |
dc723c44 | 3965 | const struct rule_actions *actions; |
15aaf599 | 3966 | enum ofputil_flow_mod_flags flags; |
a3779dbc | 3967 | |
d10976b7 | 3968 | ovs_mutex_lock(&rule->mutex); |
15aaf599 | 3969 | fs.cookie = rule->flow_cookie; |
a3779dbc EJ |
3970 | fs.idle_timeout = rule->idle_timeout; |
3971 | fs.hard_timeout = rule->hard_timeout; | |
ca26eb44 | 3972 | fs.importance = rule->importance; |
15aaf599 | 3973 | created = rule->created; |
15aaf599 | 3974 | modified = rule->modified; |
06a0f3e2 | 3975 | actions = rule_get_actions(rule); |
15aaf599 | 3976 | flags = rule->flags; |
d10976b7 | 3977 | ovs_mutex_unlock(&rule->mutex); |
a3779dbc | 3978 | |
dc437090 JR |
3979 | ofproto->ofproto_class->rule_get_stats(rule, &fs.packet_count, |
3980 | &fs.byte_count, &used); | |
3981 | ||
15aaf599 BP |
3982 | minimatch_expand(&rule->cr.match, &fs.match); |
3983 | fs.table_id = rule->table_id; | |
3984 | calc_duration(created, now, &fs.duration_sec, &fs.duration_nsec); | |
3985 | fs.priority = rule->cr.priority; | |
3986 | fs.idle_age = age_secs(now - used); | |
3987 | fs.hard_age = age_secs(now - modified); | |
15aaf599 BP |
3988 | fs.ofpacts = actions->ofpacts; |
3989 | fs.ofpacts_len = actions->ofpacts_len; | |
3f517bcd | 3990 | |
15aaf599 | 3991 | fs.flags = flags; |
9ed18e46 | 3992 | ofputil_append_flow_stats_reply(&fs, &replies); |
3c4486a5 | 3993 | } |
15aaf599 BP |
3994 | |
3995 | rule_collection_unref(&rules); | |
a8e547c1 BP |
3996 | rule_collection_destroy(&rules); |
3997 | ||
63f2140a | 3998 | ofconn_send_replies(ofconn, &replies); |
5ecc9d81 | 3999 | |
09246b99 BP |
4000 | return 0; |
4001 | } | |
4002 | ||
4f2cad2c | 4003 | static void |
3394b5b6 | 4004 | flow_stats_ds(struct rule *rule, struct ds *results) |
4f2cad2c | 4005 | { |
4f2cad2c | 4006 | uint64_t packet_count, byte_count; |
dc723c44 | 4007 | const struct rule_actions *actions; |
dc437090 | 4008 | long long int created, used; |
4f2cad2c | 4009 | |
dc437090 JR |
4010 | rule->ofproto->ofproto_class->rule_get_stats(rule, &packet_count, |
4011 | &byte_count, &used); | |
4f2cad2c | 4012 | |
15aaf599 | 4013 | ovs_mutex_lock(&rule->mutex); |
06a0f3e2 | 4014 | actions = rule_get_actions(rule); |
15aaf599 BP |
4015 | created = rule->created; |
4016 | ovs_mutex_unlock(&rule->mutex); | |
4017 | ||
6c1491fb BP |
4018 | if (rule->table_id != 0) { |
4019 | ds_put_format(results, "table_id=%"PRIu8", ", rule->table_id); | |
4020 | } | |
15aaf599 | 4021 | ds_put_format(results, "duration=%llds, ", (time_msec() - created) / 1000); |
4f2cad2c JP |
4022 | ds_put_format(results, "n_packets=%"PRIu64", ", packet_count); |
4023 | ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count); | |
cb833cf6 | 4024 | cls_rule_format(&rule->cr, results); |
a5df0e72 | 4025 | ds_put_char(results, ','); |
15aaf599 | 4026 | |
455ecd77 | 4027 | ds_put_cstr(results, "actions="); |
15aaf599 BP |
4028 | ofpacts_format(actions->ofpacts, actions->ofpacts_len, results); |
4029 | ||
4f2cad2c JP |
4030 | ds_put_cstr(results, "\n"); |
4031 | } | |
4032 | ||
d295e8e9 | 4033 | /* Adds a pretty-printed description of all flows to 'results', including |
ee8b231c | 4034 | * hidden flows (e.g., set up by in-band control). */ |
4f2cad2c JP |
4035 | void |
4036 | ofproto_get_all_flows(struct ofproto *p, struct ds *results) | |
4037 | { | |
d0918789 | 4038 | struct oftable *table; |
6c1491fb | 4039 | |
d0918789 | 4040 | OFPROTO_FOR_EACH_TABLE (table, p) { |
6c1491fb | 4041 | struct rule *rule; |
064af421 | 4042 | |
5f0476ce | 4043 | CLS_FOR_EACH (rule, cr, &table->cls) { |
6c1491fb BP |
4044 | flow_stats_ds(rule, results); |
4045 | } | |
064af421 | 4046 | } |
064af421 BP |
4047 | } |
4048 | ||
b5827b24 BP |
4049 | /* Obtains the NetFlow engine type and engine ID for 'ofproto' into |
4050 | * '*engine_type' and '*engine_id', respectively. */ | |
4051 | void | |
4052 | ofproto_get_netflow_ids(const struct ofproto *ofproto, | |
4053 | uint8_t *engine_type, uint8_t *engine_id) | |
4054 | { | |
abe529af | 4055 | ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id); |
b5827b24 BP |
4056 | } |
4057 | ||
8f5514fe AW |
4058 | /* Checks the status change of CFM on 'ofport'. |
4059 | * | |
4060 | * Returns true if 'ofproto_class' does not support 'cfm_status_changed'. */ | |
4061 | bool | |
4062 | ofproto_port_cfm_status_changed(struct ofproto *ofproto, ofp_port_t ofp_port) | |
4063 | { | |
4064 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
4065 | return (ofport && ofproto->ofproto_class->cfm_status_changed | |
4066 | ? ofproto->ofproto_class->cfm_status_changed(ofport) | |
4067 | : true); | |
4068 | } | |
4069 | ||
88bf179a AW |
4070 | /* Checks the status of CFM configured on 'ofp_port' within 'ofproto'. |
4071 | * Returns 0 if the port's CFM status was successfully stored into | |
4072 | * '*status'. Returns positive errno if the port did not have CFM | |
8f5514fe | 4073 | * configured. |
9a9e3786 | 4074 | * |
88bf179a AW |
4075 | * The caller must provide and own '*status', and must free 'status->rmps'. |
4076 | * '*status' is indeterminate if the return value is non-zero. */ | |
4077 | int | |
4e022ec0 | 4078 | ofproto_port_get_cfm_status(const struct ofproto *ofproto, ofp_port_t ofp_port, |
685acfd9 | 4079 | struct cfm_status *status) |
3967a833 MM |
4080 | { |
4081 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
88bf179a AW |
4082 | return (ofport && ofproto->ofproto_class->get_cfm_status |
4083 | ? ofproto->ofproto_class->get_cfm_status(ofport, status) | |
4084 | : EOPNOTSUPP); | |
3967a833 MM |
4085 | } |
4086 | ||
90bf1e07 | 4087 | static enum ofperr |
76c93b22 | 4088 | handle_aggregate_stats_request(struct ofconn *ofconn, |
982697a4 | 4089 | const struct ofp_header *oh) |
15aaf599 | 4090 | OVS_EXCLUDED(ofproto_mutex) |
27d34fce | 4091 | { |
76c93b22 | 4092 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 4093 | struct ofputil_flow_stats_request request; |
76c93b22 | 4094 | struct ofputil_aggregate_stats stats; |
5e9d0469 | 4095 | bool unknown_packets, unknown_bytes; |
a9b22b7f | 4096 | struct rule_criteria criteria; |
a8e547c1 | 4097 | struct rule_collection rules; |
76c93b22 | 4098 | struct ofpbuf *reply; |
90bf1e07 | 4099 | enum ofperr error; |
a8e547c1 | 4100 | size_t i; |
27d34fce | 4101 | |
982697a4 | 4102 | error = ofputil_decode_flow_stats_request(&request, oh); |
76c93b22 BP |
4103 | if (error) { |
4104 | return error; | |
4105 | } | |
5ecc9d81 | 4106 | |
a9b22b7f BP |
4107 | rule_criteria_init(&criteria, request.table_id, &request.match, 0, |
4108 | request.cookie, request.cookie_mask, | |
4109 | request.out_port, request.out_group); | |
15aaf599 BP |
4110 | |
4111 | ovs_mutex_lock(&ofproto_mutex); | |
a9b22b7f BP |
4112 | error = collect_rules_loose(ofproto, &criteria, &rules); |
4113 | rule_criteria_destroy(&criteria); | |
15aaf599 BP |
4114 | if (!error) { |
4115 | rule_collection_ref(&rules); | |
4116 | } | |
4117 | ovs_mutex_unlock(&ofproto_mutex); | |
4118 | ||
9ed18e46 BP |
4119 | if (error) { |
4120 | return error; | |
4121 | } | |
3c4486a5 | 4122 | |
9ed18e46 | 4123 | memset(&stats, 0, sizeof stats); |
5e9d0469 | 4124 | unknown_packets = unknown_bytes = false; |
a8e547c1 BP |
4125 | for (i = 0; i < rules.n; i++) { |
4126 | struct rule *rule = rules.rules[i]; | |
9ed18e46 BP |
4127 | uint64_t packet_count; |
4128 | uint64_t byte_count; | |
dc437090 | 4129 | long long int used; |
5ecc9d81 | 4130 | |
9ed18e46 | 4131 | ofproto->ofproto_class->rule_get_stats(rule, &packet_count, |
dc437090 | 4132 | &byte_count, &used); |
5ecc9d81 | 4133 | |
5e9d0469 BP |
4134 | if (packet_count == UINT64_MAX) { |
4135 | unknown_packets = true; | |
4136 | } else { | |
4137 | stats.packet_count += packet_count; | |
4138 | } | |
4139 | ||
4140 | if (byte_count == UINT64_MAX) { | |
4141 | unknown_bytes = true; | |
4142 | } else { | |
4143 | stats.byte_count += byte_count; | |
4144 | } | |
4145 | ||
9ed18e46 | 4146 | stats.flow_count++; |
3c4486a5 | 4147 | } |
5e9d0469 BP |
4148 | if (unknown_packets) { |
4149 | stats.packet_count = UINT64_MAX; | |
4150 | } | |
4151 | if (unknown_bytes) { | |
4152 | stats.byte_count = UINT64_MAX; | |
4153 | } | |
27d34fce | 4154 | |
15aaf599 | 4155 | rule_collection_unref(&rules); |
a8e547c1 BP |
4156 | rule_collection_destroy(&rules); |
4157 | ||
982697a4 | 4158 | reply = ofputil_encode_aggregate_stats_reply(&stats, oh); |
76c93b22 | 4159 | ofconn_send_reply(ofconn, reply); |
09246b99 BP |
4160 | |
4161 | return 0; | |
4162 | } | |
4163 | ||
c1c9c9c4 | 4164 | struct queue_stats_cbdata { |
ca0f572c | 4165 | struct ofport *ofport; |
ca6ba700 | 4166 | struct ovs_list replies; |
6dc34a0d | 4167 | long long int now; |
c1c9c9c4 BP |
4168 | }; |
4169 | ||
4170 | static void | |
db9220c3 | 4171 | put_queue_stats(struct queue_stats_cbdata *cbdata, uint32_t queue_id, |
c1c9c9c4 BP |
4172 | const struct netdev_queue_stats *stats) |
4173 | { | |
6dc34a0d | 4174 | struct ofputil_queue_stats oqs; |
c1c9c9c4 | 4175 | |
6dc34a0d BP |
4176 | oqs.port_no = cbdata->ofport->pp.port_no; |
4177 | oqs.queue_id = queue_id; | |
4178 | oqs.tx_bytes = stats->tx_bytes; | |
4179 | oqs.tx_packets = stats->tx_packets; | |
4180 | oqs.tx_errors = stats->tx_errors; | |
4181 | if (stats->created != LLONG_MIN) { | |
4182 | calc_duration(stats->created, cbdata->now, | |
4183 | &oqs.duration_sec, &oqs.duration_nsec); | |
4184 | } else { | |
4185 | oqs.duration_sec = oqs.duration_nsec = UINT32_MAX; | |
4186 | } | |
64626975 | 4187 | ofputil_append_queue_stat(&cbdata->replies, &oqs); |
c1c9c9c4 BP |
4188 | } |
4189 | ||
4190 | static void | |
db9220c3 | 4191 | handle_queue_stats_dump_cb(uint32_t queue_id, |
c1c9c9c4 BP |
4192 | struct netdev_queue_stats *stats, |
4193 | void *cbdata_) | |
4194 | { | |
4195 | struct queue_stats_cbdata *cbdata = cbdata_; | |
4196 | ||
4197 | put_queue_stats(cbdata, queue_id, stats); | |
4198 | } | |
4199 | ||
0414d158 | 4200 | static enum ofperr |
ca0f572c | 4201 | handle_queue_stats_for_port(struct ofport *port, uint32_t queue_id, |
c1c9c9c4 BP |
4202 | struct queue_stats_cbdata *cbdata) |
4203 | { | |
ca0f572c | 4204 | cbdata->ofport = port; |
c1c9c9c4 BP |
4205 | if (queue_id == OFPQ_ALL) { |
4206 | netdev_dump_queue_stats(port->netdev, | |
4207 | handle_queue_stats_dump_cb, cbdata); | |
4208 | } else { | |
4209 | struct netdev_queue_stats stats; | |
4210 | ||
1ac788f6 BP |
4211 | if (!netdev_get_queue_stats(port->netdev, queue_id, &stats)) { |
4212 | put_queue_stats(cbdata, queue_id, &stats); | |
0414d158 BP |
4213 | } else { |
4214 | return OFPERR_OFPQOFC_BAD_QUEUE; | |
1ac788f6 | 4215 | } |
c1c9c9c4 | 4216 | } |
0414d158 | 4217 | return 0; |
c1c9c9c4 BP |
4218 | } |
4219 | ||
90bf1e07 | 4220 | static enum ofperr |
63f2140a | 4221 | handle_queue_stats_request(struct ofconn *ofconn, |
982697a4 | 4222 | const struct ofp_header *rq) |
c1c9c9c4 | 4223 | { |
64ff1d96 | 4224 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
c1c9c9c4 | 4225 | struct queue_stats_cbdata cbdata; |
0414d158 | 4226 | struct ofport *port; |
0414d158 | 4227 | enum ofperr error; |
64626975 | 4228 | struct ofputil_queue_stats_request oqsr; |
c1c9c9c4 | 4229 | |
c1c9c9c4 BP |
4230 | COVERAGE_INC(ofproto_queue_req); |
4231 | ||
982697a4 | 4232 | ofpmp_init(&cbdata.replies, rq); |
6dc34a0d | 4233 | cbdata.now = time_msec(); |
c1c9c9c4 | 4234 | |
64626975 SH |
4235 | error = ofputil_decode_queue_stats_request(rq, &oqsr); |
4236 | if (error) { | |
4237 | return error; | |
4238 | } | |
4239 | ||
7f05e7ab | 4240 | if (oqsr.port_no == OFPP_ANY) { |
0414d158 | 4241 | error = OFPERR_OFPQOFC_BAD_QUEUE; |
4e8e4213 | 4242 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
64626975 | 4243 | if (!handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata)) { |
0414d158 BP |
4244 | error = 0; |
4245 | } | |
c1c9c9c4 | 4246 | } |
0414d158 | 4247 | } else { |
64626975 | 4248 | port = ofproto_get_port(ofproto, oqsr.port_no); |
0414d158 | 4249 | error = (port |
64626975 | 4250 | ? handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata) |
0414d158 BP |
4251 | : OFPERR_OFPQOFC_BAD_PORT); |
4252 | } | |
4253 | if (!error) { | |
4254 | ofconn_send_replies(ofconn, &cbdata.replies); | |
c1c9c9c4 | 4255 | } else { |
63f2140a | 4256 | ofpbuf_list_delete(&cbdata.replies); |
c1c9c9c4 | 4257 | } |
c1c9c9c4 | 4258 | |
0414d158 | 4259 | return error; |
c1c9c9c4 | 4260 | } |
7ee20df1 | 4261 | |
2e31a9b8 | 4262 | static enum ofperr |
834fe5cb | 4263 | evict_rules_from_table(struct oftable *table, unsigned int extra_space) |
15aaf599 | 4264 | OVS_REQUIRES(ofproto_mutex) |
2e31a9b8 | 4265 | { |
802f84ff JR |
4266 | enum ofperr error = 0; |
4267 | struct rule_collection rules; | |
4268 | unsigned int count = classifier_count(&table->cls) + extra_space; | |
4269 | unsigned int max_flows = table->max_flows; | |
4270 | ||
4271 | rule_collection_init(&rules); | |
4272 | ||
4273 | while (count-- > max_flows) { | |
2e31a9b8 | 4274 | struct rule *rule; |
8037acb4 | 4275 | |
2e31a9b8 | 4276 | if (!choose_rule_to_evict(table, &rule)) { |
802f84ff JR |
4277 | error = OFPERR_OFPFMFC_TABLE_FULL; |
4278 | break; | |
2e31a9b8 | 4279 | } else { |
802f84ff JR |
4280 | eviction_group_remove_rule(rule); |
4281 | rule_collection_add(&rules, rule); | |
2e31a9b8 | 4282 | } |
8037acb4 | 4283 | } |
802f84ff JR |
4284 | delete_flows__(&rules, OFPRR_EVICTION, NULL); |
4285 | rule_collection_destroy(&rules); | |
2e31a9b8 | 4286 | |
802f84ff | 4287 | return error; |
8037acb4 BP |
4288 | } |
4289 | ||
18080541 BP |
4290 | static bool |
4291 | is_conjunction(const struct ofpact *ofpacts, size_t ofpacts_len) | |
4292 | { | |
4293 | return ofpacts_len > 0 && ofpacts->type == OFPACT_CONJUNCTION; | |
4294 | } | |
4295 | ||
4296 | static void | |
4297 | get_conjunctions(const struct ofputil_flow_mod *fm, | |
4298 | struct cls_conjunction **conjsp, size_t *n_conjsp) | |
4299 | OVS_REQUIRES(ofproto_mutex) | |
4300 | { | |
4301 | struct cls_conjunction *conjs = NULL; | |
4302 | int n_conjs = 0; | |
4303 | ||
4304 | if (is_conjunction(fm->ofpacts, fm->ofpacts_len)) { | |
4305 | const struct ofpact *ofpact; | |
4306 | int i; | |
4307 | ||
4308 | n_conjs = 0; | |
4309 | OFPACT_FOR_EACH (ofpact, fm->ofpacts, fm->ofpacts_len) { | |
4310 | n_conjs++; | |
4311 | } | |
4312 | ||
4313 | conjs = xzalloc(n_conjs * sizeof *conjs); | |
4314 | i = 0; | |
4315 | OFPACT_FOR_EACH (ofpact, fm->ofpacts, fm->ofpacts_len) { | |
4316 | struct ofpact_conjunction *oc = ofpact_get_CONJUNCTION(ofpact); | |
4317 | conjs[i].clause = oc->clause; | |
4318 | conjs[i].n_clauses = oc->n_clauses; | |
4319 | conjs[i].id = oc->id; | |
4320 | i++; | |
4321 | } | |
4322 | } | |
4323 | ||
4324 | *conjsp = conjs; | |
4325 | *n_conjsp = n_conjs; | |
4326 | } | |
4327 | ||
4328 | static void | |
4329 | set_conjunctions(struct rule *rule, const struct cls_conjunction *conjs, | |
4330 | size_t n_conjs) | |
4331 | OVS_REQUIRES(ofproto_mutex) | |
4332 | { | |
4333 | struct cls_rule *cr = CONST_CAST(struct cls_rule *, &rule->cr); | |
4334 | ||
4335 | cls_rule_set_conjunctions(cr, conjs, n_conjs); | |
4336 | } | |
4337 | ||
79eee1eb BP |
4338 | /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT |
4339 | * in which no matching flow already exists in the flow table. | |
4340 | * | |
4341 | * Adds the flow specified by 'ofm', which is followed by 'n_actions' | |
d51c8b71 JR |
4342 | * ofp_actions, to the ofproto's flow table. Returns 0 on success, or an |
4343 | * OpenFlow error code on failure. | |
79eee1eb | 4344 | * |
2509616e | 4345 | * The caller retains ownership of 'fm->ofpacts'. |
f25d0cf3 | 4346 | * |
79eee1eb BP |
4347 | * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id, |
4348 | * if any. */ | |
90bf1e07 | 4349 | static enum ofperr |
baae3d02 BP |
4350 | add_flow(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4351 | const struct flow_mod_requester *req) | |
15aaf599 | 4352 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 4353 | { |
d0918789 | 4354 | struct oftable *table; |
8037acb4 | 4355 | struct cls_rule cr; |
064af421 | 4356 | struct rule *rule; |
5a361239 | 4357 | uint8_t table_id; |
d51c8b71 | 4358 | enum ofperr error = 0; |
064af421 | 4359 | |
554764d1 SH |
4360 | if (!check_table_id(ofproto, fm->table_id)) { |
4361 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
48266274 BP |
4362 | return error; |
4363 | } | |
4364 | ||
7ee20df1 BP |
4365 | /* Pick table. */ |
4366 | if (fm->table_id == 0xff) { | |
13521ff5 | 4367 | if (ofproto->ofproto_class->rule_choose_table) { |
81a76618 BP |
4368 | error = ofproto->ofproto_class->rule_choose_table(ofproto, |
4369 | &fm->match, | |
7ee20df1 BP |
4370 | &table_id); |
4371 | if (error) { | |
4372 | return error; | |
4373 | } | |
cb22974d | 4374 | ovs_assert(table_id < ofproto->n_tables); |
7ee20df1 | 4375 | } else { |
5a361239 | 4376 | table_id = 0; |
7ee20df1 BP |
4377 | } |
4378 | } else if (fm->table_id < ofproto->n_tables) { | |
5a361239 | 4379 | table_id = fm->table_id; |
7ee20df1 | 4380 | } else { |
c22c56bd | 4381 | return OFPERR_OFPBRC_BAD_TABLE_ID; |
064af421 BP |
4382 | } |
4383 | ||
5a361239 | 4384 | table = &ofproto->tables[table_id]; |
834fe5cb BP |
4385 | if (table->flags & OFTABLE_READONLY |
4386 | && !(fm->flags & OFPUTIL_FF_NO_READONLY)) { | |
5c67e4af BP |
4387 | return OFPERR_OFPBRC_EPERM; |
4388 | } | |
4389 | ||
adcf00ba AZ |
4390 | if (!(fm->flags & OFPUTIL_FF_HIDDEN_FIELDS)) { |
4391 | if (!match_has_default_hidden_fields(&fm->match)) { | |
4392 | VLOG_WARN_RL(&rl, "%s: (add_flow) only internal flows can set " | |
4393 | "non-default values to hidden fields", ofproto->name); | |
4394 | return OFPERR_OFPBRC_EPERM; | |
4395 | } | |
4396 | } | |
4397 | ||
8037acb4 BP |
4398 | cls_rule_init(&cr, &fm->match, fm->priority); |
4399 | ||
b277c7cc | 4400 | /* Transform "add" into "modify" if there's an existing identical flow. */ |
8037acb4 | 4401 | rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls, &cr)); |
b277c7cc | 4402 | if (rule) { |
8037acb4 | 4403 | cls_rule_destroy(&cr); |
b277c7cc | 4404 | |
834fe5cb | 4405 | fm->modify_cookie = true; |
dd27be82 JR |
4406 | error = modify_flow_check__(ofproto, fm, rule); |
4407 | if (!error) { | |
4408 | struct ovs_list dead_cookies = OVS_LIST_INITIALIZER(&dead_cookies); | |
a8e547c1 | 4409 | |
dd27be82 JR |
4410 | modify_flow__(ofproto, fm, rule, req, &dead_cookies); |
4411 | learned_cookies_flush(ofproto, &dead_cookies); | |
4412 | ||
4413 | goto send_packet; | |
4414 | } | |
834fe5cb | 4415 | return error; |
b277c7cc BP |
4416 | } |
4417 | ||
81a76618 | 4418 | /* Check for overlap, if requested. */ |
0fb88c18 | 4419 | if (fm->flags & OFPUTIL_FF_CHECK_OVERLAP) { |
afae68b1 | 4420 | if (classifier_rule_overlaps(&table->cls, &cr)) { |
8037acb4 | 4421 | cls_rule_destroy(&cr); |
c09f755d BP |
4422 | return OFPERR_OFPFMFC_OVERLAP; |
4423 | } | |
7ee20df1 | 4424 | } |
81a76618 | 4425 | |
8037acb4 | 4426 | /* If necessary, evict an existing rule to clear out space. */ |
834fe5cb | 4427 | error = evict_rules_from_table(table, 1); |
8037acb4 BP |
4428 | if (error) { |
4429 | cls_rule_destroy(&cr); | |
4430 | return error; | |
4431 | } | |
2e1ae200 | 4432 | |
8037acb4 | 4433 | /* Allocate new rule. */ |
d6671377 JR |
4434 | error = ofproto_rule_create(ofproto, fm, &cr, table - ofproto->tables, |
4435 | &rule); | |
b277c7cc | 4436 | if (error) { |
8037acb4 | 4437 | return error; |
064af421 | 4438 | } |
8037acb4 | 4439 | |
bc5e6a91 | 4440 | ofproto_rule_insert__(ofproto, rule); |
1ebeaaa7 | 4441 | |
802f84ff | 4442 | classifier_defer(&table->cls); |
18080541 BP |
4443 | |
4444 | struct cls_conjunction *conjs; | |
4445 | size_t n_conjs; | |
4446 | get_conjunctions(fm, &conjs, &n_conjs); | |
4447 | classifier_insert(&table->cls, &rule->cr, conjs, n_conjs); | |
4448 | free(conjs); | |
8037acb4 | 4449 | |
b20f4073 | 4450 | error = ofproto->ofproto_class->rule_insert(rule); |
834fe5cb BP |
4451 | if (error) { |
4452 | oftable_remove_rule(rule); | |
4453 | ofproto_rule_unref(rule); | |
4454 | return error; | |
4455 | } | |
fc02ecc7 | 4456 | cls_rule_make_visible(&rule->cr); |
802f84ff JR |
4457 | classifier_publish(&table->cls); |
4458 | ||
d6671377 | 4459 | learned_cookies_inc(ofproto, rule_get_actions(rule)); |
062fea06 | 4460 | |
834fe5cb BP |
4461 | if (minimask_get_vid_mask(&rule->cr.match.mask) == VLAN_VID_MASK) { |
4462 | if (ofproto->vlan_bitmap) { | |
4463 | uint16_t vid = miniflow_get_vid(&rule->cr.match.flow); | |
4464 | if (!bitmap_is_set(ofproto->vlan_bitmap, vid)) { | |
4465 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
4466 | ofproto->vlans_changed = true; | |
4467 | } | |
4468 | } else { | |
4469 | ofproto->vlans_changed = true; | |
4470 | } | |
4471 | } | |
4472 | ||
4473 | ofmonitor_report(ofproto->connmgr, rule, NXFME_ADDED, 0, | |
cdbdeeda | 4474 | req ? req->ofconn : NULL, req ? req->xid : 0, NULL); |
dd27be82 | 4475 | send_packet: |
834fe5cb | 4476 | return req ? send_buffered_packet(req->ofconn, fm->buffer_id, rule) : 0; |
064af421 | 4477 | } |
79eee1eb BP |
4478 | \f |
4479 | /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */ | |
064af421 | 4480 | |
dd27be82 | 4481 | /* Checks if the 'rule' can be modified to match 'fm'. |
79eee1eb | 4482 | * |
dd27be82 JR |
4483 | * Returns 0 on success, otherwise an OpenFlow error code. */ |
4484 | static enum ofperr | |
4485 | modify_flow_check__(struct ofproto *ofproto, struct ofputil_flow_mod *fm, | |
4486 | const struct rule *rule) | |
4487 | OVS_REQUIRES(ofproto_mutex) | |
4488 | { | |
4489 | if (ofproto->ofproto_class->rule_premodify_actions) { | |
4490 | return ofproto->ofproto_class->rule_premodify_actions( | |
4491 | rule, fm->ofpacts, fm->ofpacts_len); | |
4492 | } | |
4493 | return 0; | |
4494 | } | |
4495 | ||
4496 | /* Checks if the rules listed in 'rules' can have their actions changed to | |
4497 | * match those in 'fm'. | |
9ed18e46 BP |
4498 | * |
4499 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 4500 | static enum ofperr |
dd27be82 JR |
4501 | modify_flows_check__(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4502 | const struct rule_collection *rules) | |
15aaf599 | 4503 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4504 | { |
dd27be82 | 4505 | enum ofperr error; |
a8e547c1 | 4506 | size_t i; |
79eee1eb | 4507 | |
af822017 BP |
4508 | if (ofproto->ofproto_class->rule_premodify_actions) { |
4509 | for (i = 0; i < rules->n; i++) { | |
dd27be82 | 4510 | error = modify_flow_check__(ofproto, fm, rules->rules[i]); |
dd51dae2 BP |
4511 | if (error) { |
4512 | return error; | |
af822017 BP |
4513 | } |
4514 | } | |
4515 | } | |
4516 | ||
dd27be82 JR |
4517 | return 0; |
4518 | } | |
08043761 | 4519 | |
dd27be82 JR |
4520 | /* Modifies the 'rule', changing them to match 'fm'. */ |
4521 | static void | |
4522 | modify_flow__(struct ofproto *ofproto, struct ofputil_flow_mod *fm, | |
4523 | struct rule *rule, const struct flow_mod_requester *req, | |
4524 | struct ovs_list *dead_cookies) | |
4525 | OVS_REQUIRES(ofproto_mutex) | |
4526 | { | |
4527 | enum nx_flow_update_event event = fm->command == OFPFC_ADD | |
4528 | ? NXFME_ADDED : NXFME_MODIFIED; | |
2e1ae200 | 4529 | |
dd27be82 JR |
4530 | /* 'fm' says that */ |
4531 | bool change_cookie = (fm->modify_cookie | |
4532 | && fm->new_cookie != OVS_BE64_MAX | |
4533 | && fm->new_cookie != rule->flow_cookie); | |
5c67e4af | 4534 | |
dd27be82 JR |
4535 | const struct rule_actions *actions = rule_get_actions(rule); |
4536 | bool change_actions = !ofpacts_equal(fm->ofpacts, fm->ofpacts_len, | |
4537 | actions->ofpacts, | |
4538 | actions->ofpacts_len); | |
a7d94793 | 4539 | |
dd27be82 | 4540 | bool reset_counters = (fm->flags & OFPUTIL_FF_RESET_COUNTS) != 0; |
834fe5cb | 4541 | |
dd27be82 | 4542 | long long int now = time_msec(); |
834fe5cb | 4543 | |
dd27be82 JR |
4544 | if (change_cookie) { |
4545 | cookies_remove(ofproto, rule); | |
4546 | } | |
834fe5cb | 4547 | |
dd27be82 JR |
4548 | ovs_mutex_lock(&rule->mutex); |
4549 | if (fm->command == OFPFC_ADD) { | |
4550 | rule->idle_timeout = fm->idle_timeout; | |
4551 | rule->hard_timeout = fm->hard_timeout; | |
4552 | rule->importance = fm->importance; | |
4553 | rule->flags = fm->flags & OFPUTIL_FF_STATE; | |
4554 | rule->created = now; | |
4555 | } | |
4556 | if (change_cookie) { | |
4557 | rule->flow_cookie = fm->new_cookie; | |
4558 | } | |
4559 | rule->modified = now; | |
4560 | ovs_mutex_unlock(&rule->mutex); | |
4561 | ||
4562 | if (change_cookie) { | |
4563 | cookies_insert(ofproto, rule); | |
4564 | } | |
4565 | if (fm->command == OFPFC_ADD) { | |
4566 | if (fm->idle_timeout || fm->hard_timeout || fm->importance) { | |
4567 | if (!rule->eviction_group) { | |
4568 | eviction_group_add_rule(rule); | |
b277c7cc | 4569 | } |
dd27be82 JR |
4570 | } else { |
4571 | eviction_group_remove_rule(rule); | |
b277c7cc | 4572 | } |
dd27be82 | 4573 | } |
b277c7cc | 4574 | |
dd27be82 JR |
4575 | if (change_actions) { |
4576 | /* We have to change the actions. The rule's conjunctive match set | |
4577 | * is a function of its actions, so we need to update that too. The | |
4578 | * conjunctive match set is used in the lookup process to figure | |
4579 | * which (if any) collection of conjunctive sets the packet matches | |
4580 | * with. However, a rule with conjunction actions is never to be | |
4581 | * returned as a classifier lookup result. To make sure a rule with | |
4582 | * conjunction actions is not returned as a lookup result, we update | |
4583 | * them in a carefully chosen order: | |
4584 | * | |
4585 | * - If we're adding a conjunctive match set where there wasn't one | |
4586 | * before, we have to make the conjunctive match set available to | |
4587 | * lookups before the rule's actions are changed, as otherwise | |
4588 | * rule with a conjunction action could be returned as a lookup | |
4589 | * result. | |
4590 | * | |
4591 | * - To clear some nonempty conjunctive set, we set the rule's | |
4592 | * actions first, so that a lookup can't return a rule with | |
4593 | * conjunction actions. | |
4594 | * | |
4595 | * - Otherwise, order doesn't matter for changing one nonempty | |
4596 | * conjunctive match set to some other nonempty set, since the | |
4597 | * rule's actions are not seen by the classifier, and hence don't | |
4598 | * matter either before or after the change. */ | |
4599 | struct cls_conjunction *conjs; | |
4600 | size_t n_conjs; | |
4601 | get_conjunctions(fm, &conjs, &n_conjs); | |
4602 | ||
4603 | if (n_conjs) { | |
4604 | set_conjunctions(rule, conjs, n_conjs); | |
4605 | } | |
4606 | ovsrcu_set(&rule->actions, rule_actions_create(fm->ofpacts, | |
834fe5cb | 4607 | fm->ofpacts_len)); |
dd27be82 JR |
4608 | if (!conjs) { |
4609 | set_conjunctions(rule, conjs, n_conjs); | |
834fe5cb | 4610 | } |
884e1dc4 | 4611 | |
dd27be82 JR |
4612 | free(conjs); |
4613 | } | |
834fe5cb | 4614 | |
dd27be82 JR |
4615 | if (change_actions || reset_counters) { |
4616 | ofproto->ofproto_class->rule_modify_actions(rule, reset_counters); | |
4617 | } | |
35f48b8b | 4618 | |
dd27be82 JR |
4619 | if (event != NXFME_MODIFIED || change_actions || change_cookie) { |
4620 | ofmonitor_report(ofproto->connmgr, rule, event, 0, | |
4621 | req ? req->ofconn : NULL, req ? req->xid : 0, | |
4622 | change_actions ? actions : NULL); | |
834fe5cb BP |
4623 | } |
4624 | ||
dd27be82 JR |
4625 | if (change_actions) { |
4626 | learned_cookies_inc(ofproto, rule_get_actions(rule)); | |
4627 | learned_cookies_dec(ofproto, actions, dead_cookies); | |
4628 | rule_actions_destroy(actions); | |
5ecc9d81 | 4629 | } |
dd27be82 | 4630 | } |
79eee1eb | 4631 | |
dd27be82 JR |
4632 | /* Modifies the rules listed in 'rules', changing their actions to match those |
4633 | * in 'fm'. | |
4634 | * | |
4635 | * 'req' is used to retrieve the packet buffer specified in fm->buffer_id, | |
4636 | * if any. */ | |
4637 | static void | |
4638 | modify_flows__(struct ofproto *ofproto, struct ofputil_flow_mod *fm, | |
4639 | const struct rule_collection *rules, | |
4640 | const struct flow_mod_requester *req) | |
4641 | OVS_REQUIRES(ofproto_mutex) | |
4642 | { | |
4643 | struct ovs_list dead_cookies = OVS_LIST_INITIALIZER(&dead_cookies); | |
4644 | size_t i; | |
4645 | ||
4646 | for (i = 0; i < rules->n; i++) { | |
4647 | modify_flow__(ofproto, fm, rules->rules[i], req, &dead_cookies); | |
4648 | } | |
4649 | learned_cookies_flush(ofproto, &dead_cookies); | |
9ed18e46 BP |
4650 | } |
4651 | ||
9387b970 | 4652 | static enum ofperr |
dd27be82 JR |
4653 | modify_flows_add__(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4654 | const struct flow_mod_requester *req) | |
15aaf599 | 4655 | OVS_REQUIRES(ofproto_mutex) |
9387b970 | 4656 | { |
b8266395 | 4657 | if (fm->cookie_mask != htonll(0) || fm->new_cookie == OVS_BE64_MAX) { |
9387b970 SH |
4658 | return 0; |
4659 | } | |
baae3d02 | 4660 | return add_flow(ofproto, fm, req); |
9387b970 SH |
4661 | } |
4662 | ||
dd27be82 JR |
4663 | static enum ofperr |
4664 | modify_flows(struct ofproto *ofproto, struct ofputil_flow_mod *fm, | |
4665 | const struct rule_collection *rules, | |
4666 | const struct flow_mod_requester *req) | |
4667 | OVS_REQUIRES(ofproto_mutex) | |
4668 | { | |
4669 | enum ofperr error; | |
4670 | ||
4671 | if (rules->n > 0) { | |
4672 | error = modify_flows_check__(ofproto, fm, rules); | |
4673 | if (!error) { | |
4674 | modify_flows__(ofproto, fm, rules, req); | |
4675 | ||
4676 | if (fm->buffer_id != UINT32_MAX && req) { | |
4677 | error = send_buffered_packet(req->ofconn, fm->buffer_id, | |
4678 | rules->rules[0]); | |
4679 | } | |
4680 | } | |
4681 | } else { | |
4682 | error = modify_flows_add__(ofproto, fm, req); | |
4683 | } | |
4684 | ||
4685 | return error; | |
4686 | } | |
4687 | ||
90bf1e07 BP |
4688 | /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on |
4689 | * failure. | |
9ed18e46 BP |
4690 | * |
4691 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, | |
4692 | * if any. */ | |
90bf1e07 | 4693 | static enum ofperr |
baae3d02 BP |
4694 | modify_flows_loose(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4695 | const struct flow_mod_requester *req) | |
15aaf599 | 4696 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 4697 | { |
a9b22b7f | 4698 | struct rule_criteria criteria; |
a8e547c1 | 4699 | struct rule_collection rules; |
d51c8b71 | 4700 | enum ofperr error; |
9ed18e46 | 4701 | |
a9b22b7f BP |
4702 | rule_criteria_init(&criteria, fm->table_id, &fm->match, 0, |
4703 | fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG11_ANY); | |
dd51dae2 BP |
4704 | rule_criteria_require_rw(&criteria, |
4705 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
a9b22b7f BP |
4706 | error = collect_rules_loose(ofproto, &criteria, &rules); |
4707 | rule_criteria_destroy(&criteria); | |
4708 | ||
a8e547c1 | 4709 | if (!error) { |
dd27be82 | 4710 | error = modify_flows(ofproto, fm, &rules, req); |
623e1caf | 4711 | } |
a8e547c1 BP |
4712 | rule_collection_destroy(&rules); |
4713 | ||
4714 | return error; | |
79eee1eb BP |
4715 | } |
4716 | ||
4717 | /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error | |
baae3d02 | 4718 | * code on failure. */ |
90bf1e07 | 4719 | static enum ofperr |
baae3d02 BP |
4720 | modify_flow_strict(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4721 | const struct flow_mod_requester *req) | |
15aaf599 | 4722 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4723 | { |
a9b22b7f | 4724 | struct rule_criteria criteria; |
a8e547c1 | 4725 | struct rule_collection rules; |
d51c8b71 | 4726 | enum ofperr error; |
6c1491fb | 4727 | |
a9b22b7f BP |
4728 | rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority, |
4729 | fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG11_ANY); | |
dd51dae2 BP |
4730 | rule_criteria_require_rw(&criteria, |
4731 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
a9b22b7f BP |
4732 | error = collect_rules_strict(ofproto, &criteria, &rules); |
4733 | rule_criteria_destroy(&criteria); | |
4734 | ||
a8e547c1 | 4735 | if (!error) { |
dd27be82 JR |
4736 | /* collect_rules_strict() can return max 1 rule. */ |
4737 | error = modify_flows(ofproto, fm, &rules, req); | |
623e1caf | 4738 | } |
a8e547c1 BP |
4739 | rule_collection_destroy(&rules); |
4740 | ||
4741 | return error; | |
79eee1eb | 4742 | } |
9ed18e46 BP |
4743 | \f |
4744 | /* OFPFC_DELETE implementation. */ | |
79eee1eb | 4745 | |
9ca4a86f | 4746 | /* Deletes the rules listed in 'rules'. */ |
254750ce | 4747 | static void |
9ca4a86f | 4748 | delete_flows__(const struct rule_collection *rules, |
baae3d02 BP |
4749 | enum ofp_flow_removed_reason reason, |
4750 | const struct flow_mod_requester *req) | |
15aaf599 | 4751 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 4752 | { |
9ca4a86f | 4753 | if (rules->n) { |
55951e15 | 4754 | struct ovs_list dead_cookies = OVS_LIST_INITIALIZER(&dead_cookies); |
9ca4a86f | 4755 | struct ofproto *ofproto = rules->rules[0]->ofproto; |
802f84ff | 4756 | struct rule *rule, *next; |
9ca4a86f | 4757 | size_t i; |
79eee1eb | 4758 | |
802f84ff JR |
4759 | for (i = 0, next = rules->rules[0]; |
4760 | rule = next, next = (++i < rules->n) ? rules->rules[i] : NULL, | |
4761 | rule; ) { | |
4762 | struct classifier *cls = &ofproto->tables[rule->table_id].cls; | |
4763 | uint8_t next_table = next ? next->table_id : UINT8_MAX; | |
79eee1eb | 4764 | |
9ca4a86f BP |
4765 | ofproto_rule_send_removed(rule, reason); |
4766 | ||
4767 | ofmonitor_report(ofproto->connmgr, rule, NXFME_DELETED, reason, | |
cdbdeeda SH |
4768 | req ? req->ofconn : NULL, req ? req->xid : 0, |
4769 | NULL); | |
802f84ff JR |
4770 | |
4771 | if (next_table == rule->table_id) { | |
4772 | classifier_defer(cls); | |
4773 | } | |
4774 | classifier_remove(cls, &rule->cr); | |
4775 | if (next_table != rule->table_id) { | |
4776 | classifier_publish(cls); | |
4777 | } | |
4778 | ofproto_rule_remove__(ofproto, rule); | |
4779 | ||
9ca4a86f | 4780 | ofproto->ofproto_class->rule_delete(rule); |
35f48b8b | 4781 | |
802f84ff JR |
4782 | learned_cookies_dec(ofproto, rule_get_actions(rule), |
4783 | &dead_cookies); | |
401aa90e JR |
4784 | |
4785 | ofproto_rule_unref(rule); | |
9ca4a86f | 4786 | } |
35f48b8b | 4787 | learned_cookies_flush(ofproto, &dead_cookies); |
9ca4a86f BP |
4788 | ofmonitor_flush(ofproto->connmgr); |
4789 | } | |
79eee1eb | 4790 | } |
79eee1eb BP |
4791 | |
4792 | /* Implements OFPFC_DELETE. */ | |
90bf1e07 | 4793 | static enum ofperr |
baae3d02 | 4794 | delete_flows_loose(struct ofproto *ofproto, |
7024dffe | 4795 | const struct ofputil_flow_mod *fm, |
baae3d02 | 4796 | const struct flow_mod_requester *req) |
15aaf599 | 4797 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4798 | { |
a9b22b7f | 4799 | struct rule_criteria criteria; |
a8e547c1 | 4800 | struct rule_collection rules; |
90bf1e07 | 4801 | enum ofperr error; |
064af421 | 4802 | |
a9b22b7f BP |
4803 | rule_criteria_init(&criteria, fm->table_id, &fm->match, 0, |
4804 | fm->cookie, fm->cookie_mask, | |
4805 | fm->out_port, fm->out_group); | |
dd51dae2 BP |
4806 | rule_criteria_require_rw(&criteria, |
4807 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
a9b22b7f BP |
4808 | error = collect_rules_loose(ofproto, &criteria, &rules); |
4809 | rule_criteria_destroy(&criteria); | |
4810 | ||
802f84ff | 4811 | if (!error) { |
9ca4a86f | 4812 | delete_flows__(&rules, fm->delete_reason, req); |
a8e547c1 BP |
4813 | } |
4814 | rule_collection_destroy(&rules); | |
4815 | ||
4816 | return error; | |
064af421 BP |
4817 | } |
4818 | ||
79eee1eb | 4819 | /* Implements OFPFC_DELETE_STRICT. */ |
90bf1e07 | 4820 | static enum ofperr |
baae3d02 BP |
4821 | delete_flow_strict(struct ofproto *ofproto, const struct ofputil_flow_mod *fm, |
4822 | const struct flow_mod_requester *req) | |
15aaf599 | 4823 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4824 | { |
a9b22b7f | 4825 | struct rule_criteria criteria; |
a8e547c1 | 4826 | struct rule_collection rules; |
90bf1e07 | 4827 | enum ofperr error; |
79eee1eb | 4828 | |
a9b22b7f BP |
4829 | rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority, |
4830 | fm->cookie, fm->cookie_mask, | |
4831 | fm->out_port, fm->out_group); | |
dd51dae2 BP |
4832 | rule_criteria_require_rw(&criteria, |
4833 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
a9b22b7f BP |
4834 | error = collect_rules_strict(ofproto, &criteria, &rules); |
4835 | rule_criteria_destroy(&criteria); | |
4836 | ||
802f84ff | 4837 | if (!error) { |
9ca4a86f | 4838 | delete_flows__(&rules, fm->delete_reason, req); |
a8e547c1 BP |
4839 | } |
4840 | rule_collection_destroy(&rules); | |
4841 | ||
4842 | return error; | |
abe529af BP |
4843 | } |
4844 | ||
4845 | static void | |
4846 | ofproto_rule_send_removed(struct rule *rule, uint8_t reason) | |
15aaf599 | 4847 | OVS_REQUIRES(ofproto_mutex) |
abe529af BP |
4848 | { |
4849 | struct ofputil_flow_removed fr; | |
dc437090 | 4850 | long long int used; |
abe529af | 4851 | |
834fe5cb BP |
4852 | if (rule_is_hidden(rule) || |
4853 | !(rule->flags & OFPUTIL_FF_SEND_FLOW_REM)) { | |
abe529af BP |
4854 | return; |
4855 | } | |
4856 | ||
5cb7a798 | 4857 | minimatch_expand(&rule->cr.match, &fr.match); |
81a76618 | 4858 | fr.priority = rule->cr.priority; |
abe529af BP |
4859 | fr.cookie = rule->flow_cookie; |
4860 | fr.reason = reason; | |
95216219 | 4861 | fr.table_id = rule->table_id; |
65e0be10 BP |
4862 | calc_duration(rule->created, time_msec(), |
4863 | &fr.duration_sec, &fr.duration_nsec); | |
d10976b7 | 4864 | ovs_mutex_lock(&rule->mutex); |
abe529af | 4865 | fr.idle_timeout = rule->idle_timeout; |
fa2bad0f | 4866 | fr.hard_timeout = rule->hard_timeout; |
d10976b7 | 4867 | ovs_mutex_unlock(&rule->mutex); |
abe529af | 4868 | rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count, |
dc437090 | 4869 | &fr.byte_count, &used); |
abe529af BP |
4870 | |
4871 | connmgr_send_flow_removed(rule->ofproto->connmgr, &fr); | |
4872 | } | |
4873 | ||
4874 | /* Sends an OpenFlow "flow removed" message with the given 'reason' (either | |
4875 | * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its | |
4876 | * ofproto. | |
4877 | * | |
4878 | * ofproto implementation ->run() functions should use this function to expire | |
4879 | * OpenFlow flows. */ | |
4880 | void | |
4881 | ofproto_rule_expire(struct rule *rule, uint8_t reason) | |
15aaf599 | 4882 | OVS_REQUIRES(ofproto_mutex) |
abe529af | 4883 | { |
802f84ff JR |
4884 | struct rule_collection rules; |
4885 | ||
4886 | rules.rules = rules.stub; | |
4887 | rules.n = 1; | |
4888 | rules.stub[0] = rule; | |
4889 | delete_flows__(&rules, reason, NULL); | |
79eee1eb | 4890 | } |
994c9973 BP |
4891 | |
4892 | /* Reduces '*timeout' to no more than 'max'. A value of zero in either case | |
4893 | * means "infinite". */ | |
4894 | static void | |
4895 | reduce_timeout(uint16_t max, uint16_t *timeout) | |
4896 | { | |
4897 | if (max && (!*timeout || *timeout > max)) { | |
4898 | *timeout = max; | |
4899 | } | |
4900 | } | |
4901 | ||
4902 | /* If 'idle_timeout' is nonzero, and 'rule' has no idle timeout or an idle | |
4903 | * timeout greater than 'idle_timeout', lowers 'rule''s idle timeout to | |
4904 | * 'idle_timeout' seconds. Similarly for 'hard_timeout'. | |
4905 | * | |
4906 | * Suitable for implementing OFPACT_FIN_TIMEOUT. */ | |
4907 | void | |
4908 | ofproto_rule_reduce_timeouts(struct rule *rule, | |
4909 | uint16_t idle_timeout, uint16_t hard_timeout) | |
d10976b7 | 4910 | OVS_EXCLUDED(ofproto_mutex, rule->mutex) |
994c9973 BP |
4911 | { |
4912 | if (!idle_timeout && !hard_timeout) { | |
4913 | return; | |
4914 | } | |
4915 | ||
abe7b10f | 4916 | ovs_mutex_lock(&ofproto_mutex); |
994c9973 BP |
4917 | if (list_is_empty(&rule->expirable)) { |
4918 | list_insert(&rule->ofproto->expirable, &rule->expirable); | |
4919 | } | |
abe7b10f | 4920 | ovs_mutex_unlock(&ofproto_mutex); |
994c9973 | 4921 | |
d10976b7 | 4922 | ovs_mutex_lock(&rule->mutex); |
994c9973 BP |
4923 | reduce_timeout(idle_timeout, &rule->idle_timeout); |
4924 | reduce_timeout(hard_timeout, &rule->hard_timeout); | |
d10976b7 | 4925 | ovs_mutex_unlock(&rule->mutex); |
994c9973 | 4926 | } |
79eee1eb | 4927 | \f |
90bf1e07 | 4928 | static enum ofperr |
2e4f5fcf | 4929 | handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
15aaf599 | 4930 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 4931 | { |
a5b8d268 | 4932 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
a9a2da38 | 4933 | struct ofputil_flow_mod fm; |
f25d0cf3 BP |
4934 | uint64_t ofpacts_stub[1024 / 8]; |
4935 | struct ofpbuf ofpacts; | |
90bf1e07 | 4936 | enum ofperr error; |
064af421 | 4937 | |
76589937 | 4938 | error = reject_slave_controller(ofconn); |
9deba63b | 4939 | if (error) { |
f25d0cf3 | 4940 | goto exit; |
9deba63b | 4941 | } |
3052b0c5 | 4942 | |
f25d0cf3 BP |
4943 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
4944 | error = ofputil_decode_flow_mod(&fm, oh, ofconn_get_protocol(ofconn), | |
7e9f8266 BP |
4945 | &ofpacts, |
4946 | u16_to_ofp(ofproto->max_ports), | |
4947 | ofproto->n_tables); | |
4948 | if (!error) { | |
4949 | error = ofproto_check_ofpacts(ofproto, fm.ofpacts, fm.ofpacts_len); | |
4950 | } | |
548de4dd | 4951 | if (!error) { |
baae3d02 BP |
4952 | struct flow_mod_requester req; |
4953 | ||
4954 | req.ofconn = ofconn; | |
834fe5cb | 4955 | req.xid = oh->xid; |
baae3d02 | 4956 | error = handle_flow_mod__(ofproto, &fm, &req); |
49bdc010 | 4957 | } |
a5b8d268 | 4958 | if (error) { |
f25d0cf3 | 4959 | goto exit_free_ofpacts; |
a5b8d268 | 4960 | } |
2e310801 | 4961 | |
696d1bcf | 4962 | ofconn_report_flow_mod(ofconn, fm.command); |
a5b8d268 | 4963 | |
f25d0cf3 BP |
4964 | exit_free_ofpacts: |
4965 | ofpbuf_uninit(&ofpacts); | |
4966 | exit: | |
4967 | return error; | |
75a75043 BP |
4968 | } |
4969 | ||
90bf1e07 | 4970 | static enum ofperr |
baae3d02 BP |
4971 | handle_flow_mod__(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4972 | const struct flow_mod_requester *req) | |
15aaf599 | 4973 | OVS_EXCLUDED(ofproto_mutex) |
75a75043 | 4974 | { |
35412852 | 4975 | enum ofperr error; |
75a75043 | 4976 | |
15aaf599 | 4977 | ovs_mutex_lock(&ofproto_mutex); |
baae3d02 BP |
4978 | switch (fm->command) { |
4979 | case OFPFC_ADD: | |
4980 | error = add_flow(ofproto, fm, req); | |
4981 | break; | |
3052b0c5 | 4982 | |
baae3d02 BP |
4983 | case OFPFC_MODIFY: |
4984 | error = modify_flows_loose(ofproto, fm, req); | |
4985 | break; | |
3052b0c5 | 4986 | |
baae3d02 BP |
4987 | case OFPFC_MODIFY_STRICT: |
4988 | error = modify_flow_strict(ofproto, fm, req); | |
4989 | break; | |
3052b0c5 | 4990 | |
baae3d02 BP |
4991 | case OFPFC_DELETE: |
4992 | error = delete_flows_loose(ofproto, fm, req); | |
4993 | break; | |
3052b0c5 | 4994 | |
baae3d02 BP |
4995 | case OFPFC_DELETE_STRICT: |
4996 | error = delete_flow_strict(ofproto, fm, req); | |
4997 | break; | |
3052b0c5 | 4998 | |
baae3d02 BP |
4999 | default: |
5000 | if (fm->command > 0xff) { | |
5001 | VLOG_WARN_RL(&rl, "%s: flow_mod has explicit table_id but " | |
5002 | "flow_mod_table_id extension is not enabled", | |
5003 | ofproto->name); | |
6c1491fb | 5004 | } |
baae3d02 BP |
5005 | error = OFPERR_OFPFMFC_BAD_COMMAND; |
5006 | break; | |
3052b0c5 | 5007 | } |
baae3d02 | 5008 | ofmonitor_flush(ofproto->connmgr); |
15aaf599 | 5009 | ovs_mutex_unlock(&ofproto_mutex); |
35412852 BP |
5010 | |
5011 | run_rule_executes(ofproto); | |
5012 | return error; | |
3052b0c5 BP |
5013 | } |
5014 | ||
90bf1e07 | 5015 | static enum ofperr |
d1e2cf21 | 5016 | handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh) |
9deba63b | 5017 | { |
f4f1ea7e BP |
5018 | struct ofputil_role_request request; |
5019 | struct ofputil_role_request reply; | |
9deba63b | 5020 | struct ofpbuf *buf; |
6ea4776b JR |
5021 | enum ofperr error; |
5022 | ||
f4f1ea7e | 5023 | error = ofputil_decode_role_message(oh, &request); |
6ea4776b JR |
5024 | if (error) { |
5025 | return error; | |
5026 | } | |
9deba63b | 5027 | |
f4f1ea7e | 5028 | if (request.role != OFPCR12_ROLE_NOCHANGE) { |
f4f1ea7e BP |
5029 | if (request.have_generation_id |
5030 | && !ofconn_set_master_election_id(ofconn, request.generation_id)) { | |
5031 | return OFPERR_OFPRRFC_STALE; | |
6ea4776b | 5032 | } |
6ea4776b | 5033 | |
f4f1ea7e BP |
5034 | ofconn_set_role(ofconn, request.role); |
5035 | } | |
9deba63b | 5036 | |
f4f1ea7e | 5037 | reply.role = ofconn_get_role(ofconn); |
147cc9d3 BP |
5038 | reply.have_generation_id = ofconn_get_master_election_id( |
5039 | ofconn, &reply.generation_id); | |
f4f1ea7e | 5040 | buf = ofputil_encode_role_reply(oh, &reply); |
b0421aa2 | 5041 | ofconn_send_reply(ofconn, buf); |
9deba63b BP |
5042 | |
5043 | return 0; | |
5044 | } | |
5045 | ||
90bf1e07 | 5046 | static enum ofperr |
6c1491fb BP |
5047 | handle_nxt_flow_mod_table_id(struct ofconn *ofconn, |
5048 | const struct ofp_header *oh) | |
5049 | { | |
982697a4 | 5050 | const struct nx_flow_mod_table_id *msg = ofpmsg_body(oh); |
27527aa0 BP |
5051 | enum ofputil_protocol cur, next; |
5052 | ||
5053 | cur = ofconn_get_protocol(ofconn); | |
5054 | next = ofputil_protocol_set_tid(cur, msg->set != 0); | |
5055 | ofconn_set_protocol(ofconn, next); | |
6c1491fb | 5056 | |
6c1491fb BP |
5057 | return 0; |
5058 | } | |
5059 | ||
90bf1e07 | 5060 | static enum ofperr |
d1e2cf21 | 5061 | handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh) |
09246b99 | 5062 | { |
982697a4 | 5063 | const struct nx_set_flow_format *msg = ofpmsg_body(oh); |
27527aa0 BP |
5064 | enum ofputil_protocol cur, next; |
5065 | enum ofputil_protocol next_base; | |
09246b99 | 5066 | |
27527aa0 BP |
5067 | next_base = ofputil_nx_flow_format_to_protocol(ntohl(msg->format)); |
5068 | if (!next_base) { | |
90bf1e07 | 5069 | return OFPERR_OFPBRC_EPERM; |
09246b99 | 5070 | } |
7ee20df1 | 5071 | |
27527aa0 BP |
5072 | cur = ofconn_get_protocol(ofconn); |
5073 | next = ofputil_protocol_set_base(cur, next_base); | |
27527aa0 | 5074 | ofconn_set_protocol(ofconn, next); |
b20f4073 | 5075 | |
7ee20df1 | 5076 | return 0; |
09246b99 BP |
5077 | } |
5078 | ||
90bf1e07 | 5079 | static enum ofperr |
54834960 EJ |
5080 | handle_nxt_set_packet_in_format(struct ofconn *ofconn, |
5081 | const struct ofp_header *oh) | |
5082 | { | |
982697a4 | 5083 | const struct nx_set_packet_in_format *msg = ofpmsg_body(oh); |
54834960 EJ |
5084 | uint32_t format; |
5085 | ||
54834960 | 5086 | format = ntohl(msg->format); |
a15f0eeb | 5087 | if (format != NXPIF_OPENFLOW10 && format != NXPIF_NXM) { |
90bf1e07 | 5088 | return OFPERR_OFPBRC_EPERM; |
54834960 EJ |
5089 | } |
5090 | ||
54834960 EJ |
5091 | ofconn_set_packet_in_format(ofconn, format); |
5092 | return 0; | |
5093 | } | |
5094 | ||
80d5aefd BP |
5095 | static enum ofperr |
5096 | handle_nxt_set_async_config(struct ofconn *ofconn, const struct ofp_header *oh) | |
5097 | { | |
982697a4 | 5098 | const struct nx_async_config *msg = ofpmsg_body(oh); |
80d5aefd BP |
5099 | uint32_t master[OAM_N_TYPES]; |
5100 | uint32_t slave[OAM_N_TYPES]; | |
5101 | ||
5102 | master[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[0]); | |
5103 | master[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[0]); | |
5104 | master[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[0]); | |
5105 | ||
5106 | slave[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[1]); | |
5107 | slave[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[1]); | |
5108 | slave[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[1]); | |
5109 | ||
5110 | ofconn_set_async_config(ofconn, master, slave); | |
4550b647 MM |
5111 | if (ofconn_get_type(ofconn) == OFCONN_SERVICE && |
5112 | !ofconn_get_miss_send_len(ofconn)) { | |
5113 | ofconn_set_miss_send_len(ofconn, OFP_DEFAULT_MISS_SEND_LEN); | |
5114 | } | |
80d5aefd BP |
5115 | |
5116 | return 0; | |
5117 | } | |
5118 | ||
c423b3b3 AC |
5119 | static enum ofperr |
5120 | handle_nxt_get_async_request(struct ofconn *ofconn, const struct ofp_header *oh) | |
5121 | { | |
5122 | struct ofpbuf *buf; | |
5123 | uint32_t master[OAM_N_TYPES]; | |
5124 | uint32_t slave[OAM_N_TYPES]; | |
5125 | struct nx_async_config *msg; | |
5126 | ||
5127 | ofconn_get_async_config(ofconn, master, slave); | |
5128 | buf = ofpraw_alloc_reply(OFPRAW_OFPT13_GET_ASYNC_REPLY, oh, 0); | |
5129 | msg = ofpbuf_put_zeros(buf, sizeof *msg); | |
5130 | ||
5131 | msg->packet_in_mask[0] = htonl(master[OAM_PACKET_IN]); | |
5132 | msg->port_status_mask[0] = htonl(master[OAM_PORT_STATUS]); | |
5133 | msg->flow_removed_mask[0] = htonl(master[OAM_FLOW_REMOVED]); | |
5134 | ||
5135 | msg->packet_in_mask[1] = htonl(slave[OAM_PACKET_IN]); | |
5136 | msg->port_status_mask[1] = htonl(slave[OAM_PORT_STATUS]); | |
5137 | msg->flow_removed_mask[1] = htonl(slave[OAM_FLOW_REMOVED]); | |
5138 | ||
5139 | ofconn_send_reply(ofconn, buf); | |
5140 | ||
5141 | return 0; | |
5142 | } | |
5143 | ||
a7349929 BP |
5144 | static enum ofperr |
5145 | handle_nxt_set_controller_id(struct ofconn *ofconn, | |
5146 | const struct ofp_header *oh) | |
5147 | { | |
982697a4 | 5148 | const struct nx_controller_id *nci = ofpmsg_body(oh); |
a7349929 | 5149 | |
a7349929 BP |
5150 | if (!is_all_zeros(nci->zero, sizeof nci->zero)) { |
5151 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
5152 | } | |
5153 | ||
5154 | ofconn_set_controller_id(ofconn, ntohs(nci->controller_id)); | |
5155 | return 0; | |
5156 | } | |
5157 | ||
90bf1e07 | 5158 | static enum ofperr |
d1e2cf21 | 5159 | handle_barrier_request(struct ofconn *ofconn, const struct ofp_header *oh) |
246e61ea | 5160 | { |
246e61ea JP |
5161 | struct ofpbuf *buf; |
5162 | ||
982697a4 BP |
5163 | buf = ofpraw_alloc_reply((oh->version == OFP10_VERSION |
5164 | ? OFPRAW_OFPT10_BARRIER_REPLY | |
5165 | : OFPRAW_OFPT11_BARRIER_REPLY), oh, 0); | |
b0421aa2 | 5166 | ofconn_send_reply(ofconn, buf); |
246e61ea JP |
5167 | return 0; |
5168 | } | |
5169 | ||
2b07c8b1 BP |
5170 | static void |
5171 | ofproto_compose_flow_refresh_update(const struct rule *rule, | |
5172 | enum nx_flow_monitor_flags flags, | |
ca6ba700 | 5173 | struct ovs_list *msgs) |
15aaf599 | 5174 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 | 5175 | { |
6f00e29b | 5176 | const struct rule_actions *actions; |
2b07c8b1 | 5177 | struct ofputil_flow_update fu; |
5cb7a798 | 5178 | struct match match; |
2b07c8b1 | 5179 | |
2b07c8b1 BP |
5180 | fu.event = (flags & (NXFMF_INITIAL | NXFMF_ADD) |
5181 | ? NXFME_ADDED : NXFME_MODIFIED); | |
5182 | fu.reason = 0; | |
d10976b7 | 5183 | ovs_mutex_lock(&rule->mutex); |
2b07c8b1 BP |
5184 | fu.idle_timeout = rule->idle_timeout; |
5185 | fu.hard_timeout = rule->hard_timeout; | |
d10976b7 | 5186 | ovs_mutex_unlock(&rule->mutex); |
2b07c8b1 BP |
5187 | fu.table_id = rule->table_id; |
5188 | fu.cookie = rule->flow_cookie; | |
5cb7a798 BP |
5189 | minimatch_expand(&rule->cr.match, &match); |
5190 | fu.match = &match; | |
6b140a4e | 5191 | fu.priority = rule->cr.priority; |
6f00e29b | 5192 | |
b20f4073 | 5193 | actions = flags & NXFMF_ACTIONS ? rule_get_actions(rule) : NULL; |
6f00e29b BP |
5194 | fu.ofpacts = actions ? actions->ofpacts : NULL; |
5195 | fu.ofpacts_len = actions ? actions->ofpacts_len : 0; | |
2b07c8b1 BP |
5196 | |
5197 | if (list_is_empty(msgs)) { | |
5198 | ofputil_start_flow_update(msgs); | |
5199 | } | |
5200 | ofputil_append_flow_update(&fu, msgs); | |
5201 | } | |
5202 | ||
5203 | void | |
a8e547c1 | 5204 | ofmonitor_compose_refresh_updates(struct rule_collection *rules, |
ca6ba700 | 5205 | struct ovs_list *msgs) |
15aaf599 | 5206 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 | 5207 | { |
a8e547c1 | 5208 | size_t i; |
2b07c8b1 | 5209 | |
a8e547c1 BP |
5210 | for (i = 0; i < rules->n; i++) { |
5211 | struct rule *rule = rules->rules[i]; | |
2b07c8b1 BP |
5212 | enum nx_flow_monitor_flags flags = rule->monitor_flags; |
5213 | rule->monitor_flags = 0; | |
5214 | ||
5215 | ofproto_compose_flow_refresh_update(rule, flags, msgs); | |
5216 | } | |
5217 | } | |
5218 | ||
5219 | static void | |
5220 | ofproto_collect_ofmonitor_refresh_rule(const struct ofmonitor *m, | |
5221 | struct rule *rule, uint64_t seqno, | |
a8e547c1 | 5222 | struct rule_collection *rules) |
15aaf599 | 5223 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
5224 | { |
5225 | enum nx_flow_monitor_flags update; | |
5226 | ||
5e8b38b0 | 5227 | if (rule_is_hidden(rule)) { |
2b07c8b1 BP |
5228 | return; |
5229 | } | |
5230 | ||
b20f4073 | 5231 | if (!ofproto_rule_has_out_port(rule, m->out_port)) { |
2b07c8b1 BP |
5232 | return; |
5233 | } | |
5234 | ||
5235 | if (seqno) { | |
5236 | if (rule->add_seqno > seqno) { | |
5237 | update = NXFMF_ADD | NXFMF_MODIFY; | |
5238 | } else if (rule->modify_seqno > seqno) { | |
5239 | update = NXFMF_MODIFY; | |
5240 | } else { | |
5241 | return; | |
5242 | } | |
5243 | ||
5244 | if (!(m->flags & update)) { | |
5245 | return; | |
5246 | } | |
5247 | } else { | |
5248 | update = NXFMF_INITIAL; | |
5249 | } | |
5250 | ||
5251 | if (!rule->monitor_flags) { | |
a8e547c1 | 5252 | rule_collection_add(rules, rule); |
2b07c8b1 BP |
5253 | } |
5254 | rule->monitor_flags |= update | (m->flags & NXFMF_ACTIONS); | |
5255 | } | |
5256 | ||
5257 | static void | |
5258 | ofproto_collect_ofmonitor_refresh_rules(const struct ofmonitor *m, | |
5259 | uint64_t seqno, | |
a8e547c1 | 5260 | struct rule_collection *rules) |
15aaf599 | 5261 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
5262 | { |
5263 | const struct ofproto *ofproto = ofconn_get_ofproto(m->ofconn); | |
2b07c8b1 | 5264 | const struct oftable *table; |
81a76618 | 5265 | struct cls_rule target; |
2b07c8b1 | 5266 | |
5cb7a798 | 5267 | cls_rule_init_from_minimatch(&target, &m->match, 0); |
2b07c8b1 | 5268 | FOR_EACH_MATCHING_TABLE (table, m->table_id, ofproto) { |
2b07c8b1 BP |
5269 | struct rule *rule; |
5270 | ||
5f0476ce | 5271 | CLS_FOR_EACH_TARGET (rule, cr, &table->cls, &target) { |
2b07c8b1 BP |
5272 | ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules); |
5273 | } | |
5274 | } | |
48d28ac1 | 5275 | cls_rule_destroy(&target); |
2b07c8b1 BP |
5276 | } |
5277 | ||
5278 | static void | |
5279 | ofproto_collect_ofmonitor_initial_rules(struct ofmonitor *m, | |
a8e547c1 | 5280 | struct rule_collection *rules) |
15aaf599 | 5281 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
5282 | { |
5283 | if (m->flags & NXFMF_INITIAL) { | |
5284 | ofproto_collect_ofmonitor_refresh_rules(m, 0, rules); | |
5285 | } | |
5286 | } | |
5287 | ||
5288 | void | |
5289 | ofmonitor_collect_resume_rules(struct ofmonitor *m, | |
a8e547c1 | 5290 | uint64_t seqno, struct rule_collection *rules) |
15aaf599 | 5291 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
5292 | { |
5293 | ofproto_collect_ofmonitor_refresh_rules(m, seqno, rules); | |
5294 | } | |
5295 | ||
7b900689 SH |
5296 | static enum ofperr |
5297 | flow_monitor_delete(struct ofconn *ofconn, uint32_t id) | |
5298 | OVS_REQUIRES(ofproto_mutex) | |
5299 | { | |
5300 | struct ofmonitor *m; | |
5301 | enum ofperr error; | |
5302 | ||
5303 | m = ofmonitor_lookup(ofconn, id); | |
5304 | if (m) { | |
5305 | ofmonitor_destroy(m); | |
5306 | error = 0; | |
5307 | } else { | |
5308 | error = OFPERR_OFPMOFC_UNKNOWN_MONITOR; | |
5309 | } | |
5310 | ||
5311 | return error; | |
5312 | } | |
5313 | ||
2b07c8b1 | 5314 | static enum ofperr |
982697a4 | 5315 | handle_flow_monitor_request(struct ofconn *ofconn, const struct ofp_header *oh) |
15aaf599 | 5316 | OVS_EXCLUDED(ofproto_mutex) |
2b07c8b1 BP |
5317 | { |
5318 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5319 | struct ofmonitor **monitors; | |
5320 | size_t n_monitors, allocated_monitors; | |
a8e547c1 | 5321 | struct rule_collection rules; |
ca6ba700 | 5322 | struct ovs_list replies; |
2b07c8b1 | 5323 | enum ofperr error; |
2b07c8b1 BP |
5324 | struct ofpbuf b; |
5325 | size_t i; | |
5326 | ||
982697a4 | 5327 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
2b07c8b1 BP |
5328 | monitors = NULL; |
5329 | n_monitors = allocated_monitors = 0; | |
15aaf599 BP |
5330 | |
5331 | ovs_mutex_lock(&ofproto_mutex); | |
2b07c8b1 BP |
5332 | for (;;) { |
5333 | struct ofputil_flow_monitor_request request; | |
5334 | struct ofmonitor *m; | |
5335 | int retval; | |
5336 | ||
5337 | retval = ofputil_decode_flow_monitor_request(&request, &b); | |
5338 | if (retval == EOF) { | |
5339 | break; | |
5340 | } else if (retval) { | |
5341 | error = retval; | |
5342 | goto error; | |
5343 | } | |
5344 | ||
5345 | if (request.table_id != 0xff | |
5346 | && request.table_id >= ofproto->n_tables) { | |
5347 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
5348 | goto error; | |
5349 | } | |
5350 | ||
5351 | error = ofmonitor_create(&request, ofconn, &m); | |
5352 | if (error) { | |
5353 | goto error; | |
5354 | } | |
5355 | ||
5356 | if (n_monitors >= allocated_monitors) { | |
5357 | monitors = x2nrealloc(monitors, &allocated_monitors, | |
5358 | sizeof *monitors); | |
5359 | } | |
5360 | monitors[n_monitors++] = m; | |
5361 | } | |
5362 | ||
a8e547c1 | 5363 | rule_collection_init(&rules); |
2b07c8b1 BP |
5364 | for (i = 0; i < n_monitors; i++) { |
5365 | ofproto_collect_ofmonitor_initial_rules(monitors[i], &rules); | |
5366 | } | |
5367 | ||
982697a4 | 5368 | ofpmp_init(&replies, oh); |
2b07c8b1 | 5369 | ofmonitor_compose_refresh_updates(&rules, &replies); |
15aaf599 BP |
5370 | ovs_mutex_unlock(&ofproto_mutex); |
5371 | ||
a8e547c1 BP |
5372 | rule_collection_destroy(&rules); |
5373 | ||
2b07c8b1 | 5374 | ofconn_send_replies(ofconn, &replies); |
2b07c8b1 BP |
5375 | free(monitors); |
5376 | ||
5377 | return 0; | |
5378 | ||
5379 | error: | |
5380 | for (i = 0; i < n_monitors; i++) { | |
5381 | ofmonitor_destroy(monitors[i]); | |
5382 | } | |
5383 | free(monitors); | |
4cd1bc9d BP |
5384 | ovs_mutex_unlock(&ofproto_mutex); |
5385 | ||
2b07c8b1 BP |
5386 | return error; |
5387 | } | |
5388 | ||
5389 | static enum ofperr | |
5390 | handle_flow_monitor_cancel(struct ofconn *ofconn, const struct ofp_header *oh) | |
15aaf599 | 5391 | OVS_EXCLUDED(ofproto_mutex) |
2b07c8b1 | 5392 | { |
15aaf599 | 5393 | enum ofperr error; |
2b07c8b1 BP |
5394 | uint32_t id; |
5395 | ||
5396 | id = ofputil_decode_flow_monitor_cancel(oh); | |
15aaf599 BP |
5397 | |
5398 | ovs_mutex_lock(&ofproto_mutex); | |
7b900689 | 5399 | error = flow_monitor_delete(ofconn, id); |
15aaf599 | 5400 | ovs_mutex_unlock(&ofproto_mutex); |
2b07c8b1 | 5401 | |
15aaf599 | 5402 | return error; |
2b07c8b1 BP |
5403 | } |
5404 | ||
9cae45dc JR |
5405 | /* Meters implementation. |
5406 | * | |
5407 | * Meter table entry, indexed by the OpenFlow meter_id. | |
9cae45dc JR |
5408 | * 'created' is used to compute the duration for meter stats. |
5409 | * 'list rules' is needed so that we can delete the dependent rules when the | |
5410 | * meter table entry is deleted. | |
5411 | * 'provider_meter_id' is for the provider's private use. | |
5412 | */ | |
5413 | struct meter { | |
5414 | long long int created; /* Time created. */ | |
ca6ba700 | 5415 | struct ovs_list rules; /* List of "struct rule_dpif"s. */ |
9cae45dc JR |
5416 | ofproto_meter_id provider_meter_id; |
5417 | uint16_t flags; /* Meter flags. */ | |
5418 | uint16_t n_bands; /* Number of meter bands. */ | |
5419 | struct ofputil_meter_band *bands; | |
5420 | }; | |
5421 | ||
5422 | /* | |
5423 | * This is used in instruction validation at flow set-up time, | |
5424 | * as flows may not use non-existing meters. | |
9cae45dc JR |
5425 | * Return value of UINT32_MAX signifies an invalid meter. |
5426 | */ | |
65efd2ab JR |
5427 | static uint32_t |
5428 | get_provider_meter_id(const struct ofproto *ofproto, uint32_t of_meter_id) | |
9cae45dc JR |
5429 | { |
5430 | if (of_meter_id && of_meter_id <= ofproto->meter_features.max_meters) { | |
5431 | const struct meter *meter = ofproto->meters[of_meter_id]; | |
5432 | if (meter) { | |
5433 | return meter->provider_meter_id.uint32; | |
5434 | } | |
5435 | } | |
5436 | return UINT32_MAX; | |
5437 | } | |
5438 | ||
062fea06 BP |
5439 | /* Finds the meter invoked by 'rule''s actions and adds 'rule' to the meter's |
5440 | * list of rules. */ | |
5441 | static void | |
5442 | meter_insert_rule(struct rule *rule) | |
5443 | { | |
5444 | const struct rule_actions *a = rule_get_actions(rule); | |
5445 | uint32_t meter_id = ofpacts_get_meter(a->ofpacts, a->ofpacts_len); | |
5446 | struct meter *meter = rule->ofproto->meters[meter_id]; | |
5447 | ||
5448 | list_insert(&meter->rules, &rule->meter_list_node); | |
5449 | } | |
5450 | ||
9cae45dc JR |
5451 | static void |
5452 | meter_update(struct meter *meter, const struct ofputil_meter_config *config) | |
5453 | { | |
5454 | free(meter->bands); | |
5455 | ||
5456 | meter->flags = config->flags; | |
5457 | meter->n_bands = config->n_bands; | |
5458 | meter->bands = xmemdup(config->bands, | |
5459 | config->n_bands * sizeof *meter->bands); | |
5460 | } | |
5461 | ||
5462 | static struct meter * | |
5463 | meter_create(const struct ofputil_meter_config *config, | |
5464 | ofproto_meter_id provider_meter_id) | |
5465 | { | |
5466 | struct meter *meter; | |
5467 | ||
5468 | meter = xzalloc(sizeof *meter); | |
5469 | meter->provider_meter_id = provider_meter_id; | |
5470 | meter->created = time_msec(); | |
5471 | list_init(&meter->rules); | |
5472 | ||
5473 | meter_update(meter, config); | |
5474 | ||
5475 | return meter; | |
5476 | } | |
5477 | ||
6b3f7f02 JR |
5478 | static void |
5479 | meter_delete(struct ofproto *ofproto, uint32_t first, uint32_t last) | |
15aaf599 | 5480 | OVS_REQUIRES(ofproto_mutex) |
6b3f7f02 JR |
5481 | { |
5482 | uint32_t mid; | |
5483 | for (mid = first; mid <= last; ++mid) { | |
5484 | struct meter *meter = ofproto->meters[mid]; | |
5485 | if (meter) { | |
5486 | ofproto->meters[mid] = NULL; | |
5487 | ofproto->ofproto_class->meter_del(ofproto, | |
5488 | meter->provider_meter_id); | |
5489 | free(meter->bands); | |
5490 | free(meter); | |
5491 | } | |
5492 | } | |
5493 | } | |
5494 | ||
9cae45dc JR |
5495 | static enum ofperr |
5496 | handle_add_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm) | |
5497 | { | |
5498 | ofproto_meter_id provider_meter_id = { UINT32_MAX }; | |
5499 | struct meter **meterp = &ofproto->meters[mm->meter.meter_id]; | |
5500 | enum ofperr error; | |
5501 | ||
5502 | if (*meterp) { | |
5503 | return OFPERR_OFPMMFC_METER_EXISTS; | |
5504 | } | |
5505 | ||
5506 | error = ofproto->ofproto_class->meter_set(ofproto, &provider_meter_id, | |
5507 | &mm->meter); | |
5508 | if (!error) { | |
5509 | ovs_assert(provider_meter_id.uint32 != UINT32_MAX); | |
5510 | *meterp = meter_create(&mm->meter, provider_meter_id); | |
5511 | } | |
f0f8c6c2 | 5512 | return error; |
9cae45dc JR |
5513 | } |
5514 | ||
5515 | static enum ofperr | |
5516 | handle_modify_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm) | |
5517 | { | |
5518 | struct meter *meter = ofproto->meters[mm->meter.meter_id]; | |
5519 | enum ofperr error; | |
e555eb7c | 5520 | uint32_t provider_meter_id; |
9cae45dc JR |
5521 | |
5522 | if (!meter) { | |
5523 | return OFPERR_OFPMMFC_UNKNOWN_METER; | |
5524 | } | |
5525 | ||
e555eb7c | 5526 | provider_meter_id = meter->provider_meter_id.uint32; |
9cae45dc JR |
5527 | error = ofproto->ofproto_class->meter_set(ofproto, |
5528 | &meter->provider_meter_id, | |
5529 | &mm->meter); | |
e555eb7c | 5530 | ovs_assert(meter->provider_meter_id.uint32 == provider_meter_id); |
9cae45dc JR |
5531 | if (!error) { |
5532 | meter_update(meter, &mm->meter); | |
5533 | } | |
5534 | return error; | |
5535 | } | |
5536 | ||
5537 | static enum ofperr | |
baae3d02 | 5538 | handle_delete_meter(struct ofconn *ofconn, struct ofputil_meter_mod *mm) |
15aaf599 | 5539 | OVS_EXCLUDED(ofproto_mutex) |
9cae45dc JR |
5540 | { |
5541 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5542 | uint32_t meter_id = mm->meter.meter_id; | |
a8e547c1 BP |
5543 | struct rule_collection rules; |
5544 | enum ofperr error = 0; | |
9cae45dc | 5545 | uint32_t first, last; |
9cae45dc JR |
5546 | |
5547 | if (meter_id == OFPM13_ALL) { | |
5548 | first = 1; | |
5549 | last = ofproto->meter_features.max_meters; | |
5550 | } else { | |
5551 | if (!meter_id || meter_id > ofproto->meter_features.max_meters) { | |
5552 | return 0; | |
5553 | } | |
5554 | first = last = meter_id; | |
5555 | } | |
5556 | ||
5557 | /* First delete the rules that use this meter. If any of those rules are | |
5558 | * currently being modified, postpone the whole operation until later. */ | |
a8e547c1 | 5559 | rule_collection_init(&rules); |
15aaf599 | 5560 | ovs_mutex_lock(&ofproto_mutex); |
9cae45dc JR |
5561 | for (meter_id = first; meter_id <= last; ++meter_id) { |
5562 | struct meter *meter = ofproto->meters[meter_id]; | |
5563 | if (meter && !list_is_empty(&meter->rules)) { | |
5564 | struct rule *rule; | |
5565 | ||
5566 | LIST_FOR_EACH (rule, meter_list_node, &meter->rules) { | |
a8e547c1 | 5567 | rule_collection_add(&rules, rule); |
9cae45dc JR |
5568 | } |
5569 | } | |
5570 | } | |
802f84ff | 5571 | delete_flows__(&rules, OFPRR_METER_DELETE, NULL); |
9cae45dc JR |
5572 | |
5573 | /* Delete the meters. */ | |
6b3f7f02 | 5574 | meter_delete(ofproto, first, last); |
9cae45dc | 5575 | |
15aaf599 | 5576 | ovs_mutex_unlock(&ofproto_mutex); |
a8e547c1 BP |
5577 | rule_collection_destroy(&rules); |
5578 | ||
5579 | return error; | |
9cae45dc JR |
5580 | } |
5581 | ||
5582 | static enum ofperr | |
5583 | handle_meter_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
5584 | { | |
5585 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5586 | struct ofputil_meter_mod mm; | |
5587 | uint64_t bands_stub[256 / 8]; | |
5588 | struct ofpbuf bands; | |
5589 | uint32_t meter_id; | |
5590 | enum ofperr error; | |
5591 | ||
5592 | error = reject_slave_controller(ofconn); | |
5593 | if (error) { | |
5594 | return error; | |
5595 | } | |
5596 | ||
5597 | ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub); | |
5598 | ||
5599 | error = ofputil_decode_meter_mod(oh, &mm, &bands); | |
5600 | if (error) { | |
5601 | goto exit_free_bands; | |
5602 | } | |
5603 | ||
5604 | meter_id = mm.meter.meter_id; | |
5605 | ||
5606 | if (mm.command != OFPMC13_DELETE) { | |
5607 | /* Fails also when meters are not implemented by the provider. */ | |
b31e8700 | 5608 | if (meter_id == 0 || meter_id > OFPM13_MAX) { |
9cae45dc JR |
5609 | error = OFPERR_OFPMMFC_INVALID_METER; |
5610 | goto exit_free_bands; | |
b31e8700 JR |
5611 | } else if (meter_id > ofproto->meter_features.max_meters) { |
5612 | error = OFPERR_OFPMMFC_OUT_OF_METERS; | |
5613 | goto exit_free_bands; | |
9cae45dc JR |
5614 | } |
5615 | if (mm.meter.n_bands > ofproto->meter_features.max_bands) { | |
5616 | error = OFPERR_OFPMMFC_OUT_OF_BANDS; | |
5617 | goto exit_free_bands; | |
5618 | } | |
5619 | } | |
5620 | ||
5621 | switch (mm.command) { | |
5622 | case OFPMC13_ADD: | |
5623 | error = handle_add_meter(ofproto, &mm); | |
5624 | break; | |
5625 | ||
5626 | case OFPMC13_MODIFY: | |
5627 | error = handle_modify_meter(ofproto, &mm); | |
5628 | break; | |
5629 | ||
5630 | case OFPMC13_DELETE: | |
baae3d02 | 5631 | error = handle_delete_meter(ofconn, &mm); |
9cae45dc JR |
5632 | break; |
5633 | ||
5634 | default: | |
5635 | error = OFPERR_OFPMMFC_BAD_COMMAND; | |
5636 | break; | |
5637 | } | |
5638 | ||
5639 | exit_free_bands: | |
5640 | ofpbuf_uninit(&bands); | |
5641 | return error; | |
5642 | } | |
5643 | ||
5644 | static enum ofperr | |
5645 | handle_meter_features_request(struct ofconn *ofconn, | |
5646 | const struct ofp_header *request) | |
5647 | { | |
5648 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5649 | struct ofputil_meter_features features; | |
5650 | struct ofpbuf *b; | |
5651 | ||
5652 | if (ofproto->ofproto_class->meter_get_features) { | |
5653 | ofproto->ofproto_class->meter_get_features(ofproto, &features); | |
5654 | } else { | |
5655 | memset(&features, 0, sizeof features); | |
5656 | } | |
5657 | b = ofputil_encode_meter_features_reply(&features, request); | |
5658 | ||
5659 | ofconn_send_reply(ofconn, b); | |
5660 | return 0; | |
5661 | } | |
5662 | ||
5663 | static enum ofperr | |
5664 | handle_meter_request(struct ofconn *ofconn, const struct ofp_header *request, | |
5665 | enum ofptype type) | |
5666 | { | |
5667 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
ca6ba700 | 5668 | struct ovs_list replies; |
9cae45dc JR |
5669 | uint64_t bands_stub[256 / 8]; |
5670 | struct ofpbuf bands; | |
5671 | uint32_t meter_id, first, last; | |
5672 | ||
5673 | ofputil_decode_meter_request(request, &meter_id); | |
5674 | ||
5675 | if (meter_id == OFPM13_ALL) { | |
5676 | first = 1; | |
5677 | last = ofproto->meter_features.max_meters; | |
5678 | } else { | |
5679 | if (!meter_id || meter_id > ofproto->meter_features.max_meters || | |
5680 | !ofproto->meters[meter_id]) { | |
5681 | return OFPERR_OFPMMFC_UNKNOWN_METER; | |
5682 | } | |
5683 | first = last = meter_id; | |
5684 | } | |
5685 | ||
5686 | ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub); | |
5687 | ofpmp_init(&replies, request); | |
5688 | ||
5689 | for (meter_id = first; meter_id <= last; ++meter_id) { | |
5690 | struct meter *meter = ofproto->meters[meter_id]; | |
5691 | if (!meter) { | |
5692 | continue; /* Skip non-existing meters. */ | |
5693 | } | |
261bd854 | 5694 | if (type == OFPTYPE_METER_STATS_REQUEST) { |
9cae45dc JR |
5695 | struct ofputil_meter_stats stats; |
5696 | ||
5697 | stats.meter_id = meter_id; | |
5698 | ||
5699 | /* Provider sets the packet and byte counts, we do the rest. */ | |
5700 | stats.flow_count = list_size(&meter->rules); | |
5701 | calc_duration(meter->created, time_msec(), | |
5702 | &stats.duration_sec, &stats.duration_nsec); | |
5703 | stats.n_bands = meter->n_bands; | |
5704 | ofpbuf_clear(&bands); | |
5705 | stats.bands | |
5706 | = ofpbuf_put_uninit(&bands, | |
5707 | meter->n_bands * sizeof *stats.bands); | |
5708 | ||
5709 | if (!ofproto->ofproto_class->meter_get(ofproto, | |
5710 | meter->provider_meter_id, | |
5711 | &stats)) { | |
5712 | ofputil_append_meter_stats(&replies, &stats); | |
5713 | } | |
5714 | } else { /* type == OFPTYPE_METER_CONFIG_REQUEST */ | |
5715 | struct ofputil_meter_config config; | |
5716 | ||
5717 | config.meter_id = meter_id; | |
5718 | config.flags = meter->flags; | |
5719 | config.n_bands = meter->n_bands; | |
5720 | config.bands = meter->bands; | |
5721 | ofputil_append_meter_config(&replies, &config); | |
5722 | } | |
5723 | } | |
5724 | ||
5725 | ofconn_send_replies(ofconn, &replies); | |
5726 | ofpbuf_uninit(&bands); | |
5727 | return 0; | |
5728 | } | |
5729 | ||
3fc3b679 AZ |
5730 | static bool |
5731 | ofproto_group_lookup__(const struct ofproto *ofproto, uint32_t group_id, | |
5732 | struct ofgroup **group) | |
5733 | OVS_REQ_RDLOCK(ofproto->groups_rwlock) | |
7395c052 | 5734 | { |
7395c052 NZ |
5735 | HMAP_FOR_EACH_IN_BUCKET (*group, hmap_node, |
5736 | hash_int(group_id, 0), &ofproto->groups) { | |
5737 | if ((*group)->group_id == group_id) { | |
7395c052 NZ |
5738 | return true; |
5739 | } | |
5740 | } | |
3fc3b679 | 5741 | |
7395c052 NZ |
5742 | return false; |
5743 | } | |
5744 | ||
3fc3b679 AZ |
5745 | /* If the group exists, this function increments the groups's reference count. |
5746 | * | |
5747 | * Make sure to call ofproto_group_unref() after no longer needing to maintain | |
5748 | * a reference to the group. */ | |
5749 | bool | |
5750 | ofproto_group_lookup(const struct ofproto *ofproto, uint32_t group_id, | |
5751 | struct ofgroup **group) | |
7395c052 | 5752 | { |
3fc3b679 AZ |
5753 | bool found; |
5754 | ||
5755 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
5756 | found = ofproto_group_lookup__(ofproto, group_id, group); | |
5757 | if (found) { | |
5758 | ofproto_group_ref(*group); | |
7395c052 | 5759 | } |
3fc3b679 AZ |
5760 | ovs_rwlock_unlock(&ofproto->groups_rwlock); |
5761 | return found; | |
7395c052 NZ |
5762 | } |
5763 | ||
5764 | static bool | |
7e9f8266 | 5765 | ofproto_group_exists__(const struct ofproto *ofproto, uint32_t group_id) |
7395c052 NZ |
5766 | OVS_REQ_RDLOCK(ofproto->groups_rwlock) |
5767 | { | |
5768 | struct ofgroup *grp; | |
5769 | ||
5770 | HMAP_FOR_EACH_IN_BUCKET (grp, hmap_node, | |
5771 | hash_int(group_id, 0), &ofproto->groups) { | |
5772 | if (grp->group_id == group_id) { | |
5773 | return true; | |
5774 | } | |
5775 | } | |
5776 | return false; | |
5777 | } | |
5778 | ||
7e9f8266 BP |
5779 | static bool |
5780 | ofproto_group_exists(const struct ofproto *ofproto, uint32_t group_id) | |
5781 | OVS_EXCLUDED(ofproto->groups_rwlock) | |
5782 | { | |
5783 | bool exists; | |
5784 | ||
5785 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
5786 | exists = ofproto_group_exists__(ofproto, group_id); | |
5787 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5788 | ||
5789 | return exists; | |
5790 | } | |
5791 | ||
732feb93 SH |
5792 | static uint32_t |
5793 | group_get_ref_count(struct ofgroup *group) | |
5794 | OVS_EXCLUDED(ofproto_mutex) | |
5795 | { | |
eaf004bd | 5796 | struct ofproto *ofproto = CONST_CAST(struct ofproto *, group->ofproto); |
732feb93 SH |
5797 | struct rule_criteria criteria; |
5798 | struct rule_collection rules; | |
5799 | struct match match; | |
5800 | enum ofperr error; | |
5801 | uint32_t count; | |
5802 | ||
5803 | match_init_catchall(&match); | |
5804 | rule_criteria_init(&criteria, 0xff, &match, 0, htonll(0), htonll(0), | |
5805 | OFPP_ANY, group->group_id); | |
5806 | ovs_mutex_lock(&ofproto_mutex); | |
5807 | error = collect_rules_loose(ofproto, &criteria, &rules); | |
5808 | ovs_mutex_unlock(&ofproto_mutex); | |
5809 | rule_criteria_destroy(&criteria); | |
5810 | ||
5811 | count = !error && rules.n < UINT32_MAX ? rules.n : UINT32_MAX; | |
5812 | ||
5813 | rule_collection_destroy(&rules); | |
5814 | return count; | |
5815 | } | |
5816 | ||
7395c052 | 5817 | static void |
ca6ba700 | 5818 | append_group_stats(struct ofgroup *group, struct ovs_list *replies) |
7395c052 NZ |
5819 | { |
5820 | struct ofputil_group_stats ogs; | |
eaf004bd | 5821 | const struct ofproto *ofproto = group->ofproto; |
7395c052 NZ |
5822 | long long int now = time_msec(); |
5823 | int error; | |
5824 | ||
646b2a9c SH |
5825 | ogs.bucket_stats = xmalloc(group->n_buckets * sizeof *ogs.bucket_stats); |
5826 | ||
732feb93 SH |
5827 | /* Provider sets the packet and byte counts, we do the rest. */ |
5828 | ogs.ref_count = group_get_ref_count(group); | |
5829 | ogs.n_buckets = group->n_buckets; | |
5830 | ||
7395c052 NZ |
5831 | error = (ofproto->ofproto_class->group_get_stats |
5832 | ? ofproto->ofproto_class->group_get_stats(group, &ogs) | |
5833 | : EOPNOTSUPP); | |
5834 | if (error) { | |
7395c052 NZ |
5835 | ogs.packet_count = UINT64_MAX; |
5836 | ogs.byte_count = UINT64_MAX; | |
7395c052 NZ |
5837 | memset(ogs.bucket_stats, 0xff, |
5838 | ogs.n_buckets * sizeof *ogs.bucket_stats); | |
5839 | } | |
5840 | ||
5841 | ogs.group_id = group->group_id; | |
5842 | calc_duration(group->created, now, &ogs.duration_sec, &ogs.duration_nsec); | |
5843 | ||
5844 | ofputil_append_group_stats(replies, &ogs); | |
646b2a9c SH |
5845 | |
5846 | free(ogs.bucket_stats); | |
7395c052 NZ |
5847 | } |
5848 | ||
19187a71 BP |
5849 | static void |
5850 | handle_group_request(struct ofconn *ofconn, | |
5851 | const struct ofp_header *request, uint32_t group_id, | |
ca6ba700 | 5852 | void (*cb)(struct ofgroup *, struct ovs_list *replies)) |
7395c052 NZ |
5853 | { |
5854 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
7395c052 | 5855 | struct ofgroup *group; |
ca6ba700 | 5856 | struct ovs_list replies; |
7395c052 NZ |
5857 | |
5858 | ofpmp_init(&replies, request); | |
7395c052 NZ |
5859 | if (group_id == OFPG_ALL) { |
5860 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
5861 | HMAP_FOR_EACH (group, hmap_node, &ofproto->groups) { | |
19187a71 | 5862 | cb(group, &replies); |
7395c052 NZ |
5863 | } |
5864 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5865 | } else { | |
5866 | if (ofproto_group_lookup(ofproto, group_id, &group)) { | |
19187a71 | 5867 | cb(group, &replies); |
809c7548 | 5868 | ofproto_group_unref(group); |
7395c052 NZ |
5869 | } |
5870 | } | |
7395c052 | 5871 | ofconn_send_replies(ofconn, &replies); |
7395c052 NZ |
5872 | } |
5873 | ||
5874 | static enum ofperr | |
19187a71 BP |
5875 | handle_group_stats_request(struct ofconn *ofconn, |
5876 | const struct ofp_header *request) | |
7395c052 | 5877 | { |
19187a71 BP |
5878 | uint32_t group_id; |
5879 | enum ofperr error; | |
7395c052 | 5880 | |
19187a71 BP |
5881 | error = ofputil_decode_group_stats_request(request, &group_id); |
5882 | if (error) { | |
5883 | return error; | |
7395c052 | 5884 | } |
7395c052 | 5885 | |
19187a71 BP |
5886 | handle_group_request(ofconn, request, group_id, append_group_stats); |
5887 | return 0; | |
5888 | } | |
5889 | ||
5890 | static void | |
ca6ba700 | 5891 | append_group_desc(struct ofgroup *group, struct ovs_list *replies) |
19187a71 BP |
5892 | { |
5893 | struct ofputil_group_desc gds; | |
7395c052 | 5894 | |
19187a71 BP |
5895 | gds.group_id = group->group_id; |
5896 | gds.type = group->type; | |
53eb84a5 SH |
5897 | gds.props = group->props; |
5898 | ||
19187a71 BP |
5899 | ofputil_append_group_desc_reply(&gds, &group->buckets, replies); |
5900 | } | |
5901 | ||
5902 | static enum ofperr | |
5903 | handle_group_desc_stats_request(struct ofconn *ofconn, | |
5904 | const struct ofp_header *request) | |
5905 | { | |
5906 | handle_group_request(ofconn, request, | |
5907 | ofputil_decode_group_desc_request(request), | |
5908 | append_group_desc); | |
7395c052 NZ |
5909 | return 0; |
5910 | } | |
5911 | ||
5912 | static enum ofperr | |
5913 | handle_group_features_stats_request(struct ofconn *ofconn, | |
5914 | const struct ofp_header *request) | |
5915 | { | |
5916 | struct ofproto *p = ofconn_get_ofproto(ofconn); | |
5917 | struct ofpbuf *msg; | |
5918 | ||
5919 | msg = ofputil_encode_group_features_reply(&p->ogf, request); | |
5920 | if (msg) { | |
5921 | ofconn_send_reply(ofconn, msg); | |
5922 | } | |
5923 | ||
5924 | return 0; | |
5925 | } | |
5926 | ||
e8f9a7bb VG |
5927 | static enum ofperr |
5928 | handle_queue_get_config_request(struct ofconn *ofconn, | |
5929 | const struct ofp_header *oh) | |
5930 | { | |
5931 | struct ofproto *p = ofconn_get_ofproto(ofconn); | |
5932 | struct netdev_queue_dump queue_dump; | |
5933 | struct ofport *ofport; | |
5934 | unsigned int queue_id; | |
5935 | struct ofpbuf *reply; | |
5936 | struct smap details; | |
5937 | ofp_port_t request; | |
5938 | enum ofperr error; | |
5939 | ||
5940 | error = ofputil_decode_queue_get_config_request(oh, &request); | |
5941 | if (error) { | |
5942 | return error; | |
5943 | } | |
5944 | ||
5945 | ofport = ofproto_get_port(p, request); | |
5946 | if (!ofport) { | |
5947 | return OFPERR_OFPQOFC_BAD_PORT; | |
5948 | } | |
5949 | ||
5950 | reply = ofputil_encode_queue_get_config_reply(oh); | |
5951 | ||
5952 | smap_init(&details); | |
5953 | NETDEV_QUEUE_FOR_EACH (&queue_id, &details, &queue_dump, ofport->netdev) { | |
5954 | struct ofputil_queue_config queue; | |
5955 | ||
5956 | /* None of the existing queues have compatible properties, so we | |
5957 | * hard-code omitting min_rate and max_rate. */ | |
5958 | queue.queue_id = queue_id; | |
5959 | queue.min_rate = UINT16_MAX; | |
5960 | queue.max_rate = UINT16_MAX; | |
5961 | ofputil_append_queue_get_config_reply(reply, &queue); | |
5962 | } | |
5963 | smap_destroy(&details); | |
5964 | ||
5965 | ofconn_send_reply(ofconn, reply); | |
5966 | ||
5967 | return 0; | |
5968 | } | |
5969 | ||
809c7548 RW |
5970 | static enum ofperr |
5971 | init_group(struct ofproto *ofproto, struct ofputil_group_mod *gm, | |
5972 | struct ofgroup **ofgroup) | |
5973 | { | |
5974 | enum ofperr error; | |
eaf004bd | 5975 | const long long int now = time_msec(); |
809c7548 RW |
5976 | |
5977 | if (gm->group_id > OFPG_MAX) { | |
5978 | return OFPERR_OFPGMFC_INVALID_GROUP; | |
5979 | } | |
5980 | if (gm->type > OFPGT11_FF) { | |
5981 | return OFPERR_OFPGMFC_BAD_TYPE; | |
5982 | } | |
5983 | ||
5984 | *ofgroup = ofproto->ofproto_class->group_alloc(); | |
5985 | if (!*ofgroup) { | |
5986 | VLOG_WARN_RL(&rl, "%s: failed to allocate group", ofproto->name); | |
5987 | return OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
5988 | } | |
5989 | ||
eaf004bd AZ |
5990 | (*ofgroup)->ofproto = ofproto; |
5991 | *CONST_CAST(uint32_t *, &((*ofgroup)->group_id)) = gm->group_id; | |
5992 | *CONST_CAST(enum ofp11_group_type *, &(*ofgroup)->type) = gm->type; | |
5993 | *CONST_CAST(long long int *, &((*ofgroup)->created)) = now; | |
5994 | *CONST_CAST(long long int *, &((*ofgroup)->modified)) = now; | |
809c7548 RW |
5995 | ovs_refcount_init(&(*ofgroup)->ref_count); |
5996 | ||
5997 | list_move(&(*ofgroup)->buckets, &gm->buckets); | |
eaf004bd AZ |
5998 | *CONST_CAST(uint32_t *, &(*ofgroup)->n_buckets) = |
5999 | list_size(&(*ofgroup)->buckets); | |
809c7548 | 6000 | |
bc65c25a SH |
6001 | memcpy(CONST_CAST(struct ofputil_group_props *, &(*ofgroup)->props), |
6002 | &gm->props, sizeof (struct ofputil_group_props)); | |
6003 | ||
809c7548 RW |
6004 | /* Construct called BEFORE any locks are held. */ |
6005 | error = ofproto->ofproto_class->group_construct(*ofgroup); | |
6006 | if (error) { | |
6007 | ofputil_bucket_list_destroy(&(*ofgroup)->buckets); | |
6008 | ofproto->ofproto_class->group_dealloc(*ofgroup); | |
6009 | } | |
6010 | return error; | |
6011 | } | |
6012 | ||
6c5b90ce BP |
6013 | /* Implements the OFPGC11_ADD operation specified by 'gm', adding a group to |
6014 | * 'ofproto''s group table. Returns 0 on success or an OpenFlow error code on | |
6015 | * failure. */ | |
7395c052 NZ |
6016 | static enum ofperr |
6017 | add_group(struct ofproto *ofproto, struct ofputil_group_mod *gm) | |
6018 | { | |
6019 | struct ofgroup *ofgroup; | |
6020 | enum ofperr error; | |
6021 | ||
7395c052 | 6022 | /* Allocate new group and initialize it. */ |
809c7548 | 6023 | error = init_group(ofproto, gm, &ofgroup); |
7395c052 | 6024 | if (error) { |
809c7548 | 6025 | return error; |
7395c052 NZ |
6026 | } |
6027 | ||
6028 | /* We wrlock as late as possible to minimize the time we jam any other | |
6029 | * threads: No visible state changes before acquiring the lock. */ | |
6030 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
6031 | ||
6032 | if (ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) { | |
6033 | error = OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
6034 | goto unlock_out; | |
6035 | } | |
6036 | ||
7e9f8266 | 6037 | if (ofproto_group_exists__(ofproto, gm->group_id)) { |
7395c052 NZ |
6038 | error = OFPERR_OFPGMFC_GROUP_EXISTS; |
6039 | goto unlock_out; | |
6040 | } | |
6041 | ||
6042 | if (!error) { | |
6043 | /* Insert new group. */ | |
6044 | hmap_insert(&ofproto->groups, &ofgroup->hmap_node, | |
6045 | hash_int(ofgroup->group_id, 0)); | |
6046 | ofproto->n_groups[ofgroup->type]++; | |
6047 | ||
6048 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
6049 | return error; | |
6050 | } | |
6051 | ||
6052 | unlock_out: | |
6053 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
6054 | ofproto->ofproto_class->group_destruct(ofgroup); | |
7395c052 NZ |
6055 | ofputil_bucket_list_destroy(&ofgroup->buckets); |
6056 | ofproto->ofproto_class->group_dealloc(ofgroup); | |
6057 | ||
6058 | return error; | |
6059 | } | |
6060 | ||
fce4730c SH |
6061 | /* Adds all of the buckets from 'ofgroup' to 'new_ofgroup'. The buckets |
6062 | * already in 'new_ofgroup' will be placed just after the (copy of the) bucket | |
6063 | * in 'ofgroup' with bucket ID 'command_bucket_id'. Special | |
6064 | * 'command_bucket_id' values OFPG15_BUCKET_FIRST and OFPG15_BUCKET_LAST are | |
6065 | * also honored. */ | |
6066 | static enum ofperr | |
6067 | copy_buckets_for_insert_bucket(const struct ofgroup *ofgroup, | |
6068 | struct ofgroup *new_ofgroup, | |
6069 | uint32_t command_bucket_id) | |
6070 | { | |
6071 | struct ofputil_bucket *last = NULL; | |
6072 | ||
6073 | if (command_bucket_id <= OFPG15_BUCKET_MAX) { | |
6074 | /* Check here to ensure that a bucket corresponding to | |
6075 | * command_bucket_id exists in the old bucket list. | |
6076 | * | |
6077 | * The subsequent search of below of new_ofgroup covers | |
6078 | * both buckets in the old bucket list and buckets added | |
6079 | * by the insert buckets group mod message this function processes. */ | |
6080 | if (!ofputil_bucket_find(&ofgroup->buckets, command_bucket_id)) { | |
6081 | return OFPERR_OFPGMFC_UNKNOWN_BUCKET; | |
6082 | } | |
6083 | ||
6084 | if (!list_is_empty(&new_ofgroup->buckets)) { | |
6085 | last = ofputil_bucket_list_back(&new_ofgroup->buckets); | |
6086 | } | |
6087 | } | |
6088 | ||
6089 | ofputil_bucket_clone_list(&new_ofgroup->buckets, &ofgroup->buckets, NULL); | |
6090 | ||
6091 | if (ofputil_bucket_check_duplicate_id(&ofgroup->buckets)) { | |
6092 | VLOG_WARN_RL(&rl, "Duplicate bucket id"); | |
6093 | return OFPERR_OFPGMFC_BUCKET_EXISTS; | |
6094 | } | |
6095 | ||
6096 | /* Rearrange list according to command_bucket_id */ | |
6097 | if (command_bucket_id == OFPG15_BUCKET_LAST) { | |
6098 | struct ofputil_bucket *new_first; | |
6099 | const struct ofputil_bucket *first; | |
6100 | ||
6101 | first = ofputil_bucket_list_front(&ofgroup->buckets); | |
6102 | new_first = ofputil_bucket_find(&new_ofgroup->buckets, | |
6103 | first->bucket_id); | |
6104 | ||
6105 | list_splice(new_ofgroup->buckets.next, &new_first->list_node, | |
6106 | &new_ofgroup->buckets); | |
6107 | } else if (command_bucket_id <= OFPG15_BUCKET_MAX && last) { | |
6108 | struct ofputil_bucket *after; | |
6109 | ||
6110 | /* Presence of bucket is checked above so after should never be NULL */ | |
6111 | after = ofputil_bucket_find(&new_ofgroup->buckets, command_bucket_id); | |
6112 | ||
6113 | list_splice(after->list_node.next, new_ofgroup->buckets.next, | |
6114 | last->list_node.next); | |
6115 | } | |
6116 | ||
6117 | return 0; | |
6118 | } | |
6119 | ||
6120 | /* Appends all of the a copy of all the buckets from 'ofgroup' to 'new_ofgroup' | |
6121 | * with the exception of the bucket whose bucket id is 'command_bucket_id'. | |
6122 | * Special 'command_bucket_id' values OFPG15_BUCKET_FIRST, OFPG15_BUCKET_LAST | |
6123 | * and OFPG15_BUCKET_ALL are also honored. */ | |
6124 | static enum ofperr | |
6125 | copy_buckets_for_remove_bucket(const struct ofgroup *ofgroup, | |
6126 | struct ofgroup *new_ofgroup, | |
6127 | uint32_t command_bucket_id) | |
6128 | { | |
6129 | const struct ofputil_bucket *skip = NULL; | |
6130 | ||
6131 | if (command_bucket_id == OFPG15_BUCKET_ALL) { | |
6132 | return 0; | |
6133 | } | |
6134 | ||
6135 | if (command_bucket_id == OFPG15_BUCKET_FIRST) { | |
6136 | if (!list_is_empty(&ofgroup->buckets)) { | |
6137 | skip = ofputil_bucket_list_front(&ofgroup->buckets); | |
6138 | } | |
6139 | } else if (command_bucket_id == OFPG15_BUCKET_LAST) { | |
6140 | if (!list_is_empty(&ofgroup->buckets)) { | |
6141 | skip = ofputil_bucket_list_back(&ofgroup->buckets); | |
6142 | } | |
6143 | } else { | |
6144 | skip = ofputil_bucket_find(&ofgroup->buckets, command_bucket_id); | |
6145 | if (!skip) { | |
6146 | return OFPERR_OFPGMFC_UNKNOWN_BUCKET; | |
6147 | } | |
6148 | } | |
6149 | ||
6150 | ofputil_bucket_clone_list(&new_ofgroup->buckets, &ofgroup->buckets, skip); | |
6151 | ||
6152 | return 0; | |
6153 | } | |
6154 | ||
6155 | /* Implements OFPGC11_MODIFY, OFPGC15_INSERT_BUCKET and | |
6156 | * OFPGC15_REMOVE_BUCKET. Returns 0 on success or an OpenFlow error code | |
6c5b90ce | 6157 | * on failure. |
7395c052 | 6158 | * |
809c7548 RW |
6159 | * Note that the group is re-created and then replaces the old group in |
6160 | * ofproto's ofgroup hash map. Thus, the group is never altered while users of | |
6c5b90ce | 6161 | * the xlate module hold a pointer to the group. */ |
7395c052 NZ |
6162 | static enum ofperr |
6163 | modify_group(struct ofproto *ofproto, struct ofputil_group_mod *gm) | |
6164 | { | |
809c7548 | 6165 | struct ofgroup *ofgroup, *new_ofgroup, *retiring; |
7395c052 NZ |
6166 | enum ofperr error; |
6167 | ||
809c7548 RW |
6168 | error = init_group(ofproto, gm, &new_ofgroup); |
6169 | if (error) { | |
6170 | return error; | |
7395c052 NZ |
6171 | } |
6172 | ||
809c7548 | 6173 | retiring = new_ofgroup; |
7395c052 | 6174 | |
3fc3b679 AZ |
6175 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); |
6176 | if (!ofproto_group_lookup__(ofproto, gm->group_id, &ofgroup)) { | |
7395c052 | 6177 | error = OFPERR_OFPGMFC_UNKNOWN_GROUP; |
809c7548 | 6178 | goto out; |
7395c052 | 6179 | } |
809c7548 RW |
6180 | |
6181 | /* Ofproto's group write lock is held now. */ | |
7395c052 NZ |
6182 | if (ofgroup->type != gm->type |
6183 | && ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) { | |
6184 | error = OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
809c7548 | 6185 | goto out; |
7395c052 NZ |
6186 | } |
6187 | ||
fce4730c SH |
6188 | /* Manipulate bucket list for bucket commands */ |
6189 | if (gm->command == OFPGC15_INSERT_BUCKET) { | |
6190 | error = copy_buckets_for_insert_bucket(ofgroup, new_ofgroup, | |
6191 | gm->command_bucket_id); | |
6192 | } else if (gm->command == OFPGC15_REMOVE_BUCKET) { | |
6193 | error = copy_buckets_for_remove_bucket(ofgroup, new_ofgroup, | |
6194 | gm->command_bucket_id); | |
6195 | } | |
6196 | if (error) { | |
6197 | goto out; | |
6198 | } | |
6199 | ||
809c7548 | 6200 | /* The group creation time does not change during modification. */ |
eaf004bd AZ |
6201 | *CONST_CAST(long long int *, &(new_ofgroup->created)) = ofgroup->created; |
6202 | *CONST_CAST(long long int *, &(new_ofgroup->modified)) = time_msec(); | |
7395c052 | 6203 | |
809c7548 RW |
6204 | error = ofproto->ofproto_class->group_modify(new_ofgroup); |
6205 | if (error) { | |
6206 | goto out; | |
6207 | } | |
7395c052 | 6208 | |
809c7548 RW |
6209 | retiring = ofgroup; |
6210 | /* Replace ofgroup in ofproto's groups hash map with new_ofgroup. */ | |
6211 | hmap_remove(&ofproto->groups, &ofgroup->hmap_node); | |
6212 | hmap_insert(&ofproto->groups, &new_ofgroup->hmap_node, | |
6213 | hash_int(new_ofgroup->group_id, 0)); | |
6214 | if (ofgroup->type != new_ofgroup->type) { | |
6215 | ofproto->n_groups[ofgroup->type]--; | |
6216 | ofproto->n_groups[new_ofgroup->type]++; | |
7395c052 NZ |
6217 | } |
6218 | ||
809c7548 RW |
6219 | out: |
6220 | ofproto_group_unref(retiring); | |
7395c052 | 6221 | ovs_rwlock_unlock(&ofproto->groups_rwlock); |
7395c052 NZ |
6222 | return error; |
6223 | } | |
6224 | ||
6225 | static void | |
6226 | delete_group__(struct ofproto *ofproto, struct ofgroup *ofgroup) | |
6227 | OVS_RELEASES(ofproto->groups_rwlock) | |
6228 | { | |
276f6518 SH |
6229 | struct match match; |
6230 | struct ofputil_flow_mod fm; | |
6231 | ||
6232 | /* Delete all flow entries containing this group in a group action */ | |
6233 | match_init_catchall(&match); | |
6234 | flow_mod_init(&fm, &match, 0, NULL, 0, OFPFC_DELETE); | |
cc40d06b | 6235 | fm.delete_reason = OFPRR_GROUP_DELETE; |
276f6518 | 6236 | fm.out_group = ofgroup->group_id; |
baae3d02 | 6237 | handle_flow_mod__(ofproto, &fm, NULL); |
276f6518 | 6238 | |
7395c052 NZ |
6239 | hmap_remove(&ofproto->groups, &ofgroup->hmap_node); |
6240 | /* No-one can find this group any more. */ | |
6241 | ofproto->n_groups[ofgroup->type]--; | |
6242 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
809c7548 | 6243 | ofproto_group_unref(ofgroup); |
7395c052 NZ |
6244 | } |
6245 | ||
6c5b90ce | 6246 | /* Implements OFPGC11_DELETE. */ |
7395c052 NZ |
6247 | static void |
6248 | delete_group(struct ofproto *ofproto, uint32_t group_id) | |
6249 | { | |
6250 | struct ofgroup *ofgroup; | |
6251 | ||
6252 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
6253 | if (group_id == OFPG_ALL) { | |
6254 | for (;;) { | |
6255 | struct hmap_node *node = hmap_first(&ofproto->groups); | |
6256 | if (!node) { | |
6257 | break; | |
6258 | } | |
6259 | ofgroup = CONTAINER_OF(node, struct ofgroup, hmap_node); | |
6260 | delete_group__(ofproto, ofgroup); | |
6261 | /* Lock for each node separately, so that we will not jam the | |
6262 | * other threads for too long time. */ | |
6263 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
6264 | } | |
6265 | } else { | |
6266 | HMAP_FOR_EACH_IN_BUCKET (ofgroup, hmap_node, | |
6267 | hash_int(group_id, 0), &ofproto->groups) { | |
6268 | if (ofgroup->group_id == group_id) { | |
6269 | delete_group__(ofproto, ofgroup); | |
6270 | return; | |
6271 | } | |
6272 | } | |
6273 | } | |
6274 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
6275 | } | |
6276 | ||
6277 | static enum ofperr | |
6278 | handle_group_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
6279 | { | |
6280 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
6281 | struct ofputil_group_mod gm; | |
6282 | enum ofperr error; | |
6283 | ||
6284 | error = reject_slave_controller(ofconn); | |
6285 | if (error) { | |
6286 | return error; | |
6287 | } | |
6288 | ||
6289 | error = ofputil_decode_group_mod(oh, &gm); | |
6290 | if (error) { | |
6291 | return error; | |
6292 | } | |
6293 | ||
6294 | switch (gm.command) { | |
6295 | case OFPGC11_ADD: | |
6296 | return add_group(ofproto, &gm); | |
6297 | ||
6298 | case OFPGC11_MODIFY: | |
6299 | return modify_group(ofproto, &gm); | |
6300 | ||
6301 | case OFPGC11_DELETE: | |
6302 | delete_group(ofproto, gm.group_id); | |
6303 | return 0; | |
6304 | ||
fce4730c SH |
6305 | case OFPGC15_INSERT_BUCKET: |
6306 | return modify_group(ofproto, &gm); | |
6307 | ||
6308 | case OFPGC15_REMOVE_BUCKET: | |
6309 | return modify_group(ofproto, &gm); | |
6310 | ||
7395c052 NZ |
6311 | default: |
6312 | if (gm.command > OFPGC11_DELETE) { | |
6313 | VLOG_WARN_RL(&rl, "%s: Invalid group_mod command type %d", | |
6314 | ofproto->name, gm.command); | |
6315 | } | |
6316 | return OFPERR_OFPGMFC_BAD_COMMAND; | |
6317 | } | |
6318 | } | |
6319 | ||
3c1bb396 BP |
6320 | enum ofputil_table_miss |
6321 | ofproto_table_get_miss_config(const struct ofproto *ofproto, uint8_t table_id) | |
6d328fa2 | 6322 | { |
3c1bb396 | 6323 | enum ofputil_table_miss value; |
afcea9ea JR |
6324 | |
6325 | atomic_read_relaxed(&ofproto->tables[table_id].miss_config, &value); | |
3c1bb396 | 6326 | return value; |
6d328fa2 SH |
6327 | } |
6328 | ||
67761761 SH |
6329 | static enum ofperr |
6330 | table_mod(struct ofproto *ofproto, const struct ofputil_table_mod *tm) | |
6331 | { | |
3c1bb396 | 6332 | if (!check_table_id(ofproto, tm->table_id)) { |
67761761 | 6333 | return OFPERR_OFPTMFC_BAD_TABLE; |
3c1bb396 BP |
6334 | } else if (tm->miss_config != OFPUTIL_TABLE_MISS_DEFAULT) { |
6335 | if (tm->table_id == OFPTT_ALL) { | |
6336 | int i; | |
6337 | for (i = 0; i < ofproto->n_tables; i++) { | |
afcea9ea JR |
6338 | atomic_store_relaxed(&ofproto->tables[i].miss_config, |
6339 | tm->miss_config); | |
3c1bb396 BP |
6340 | } |
6341 | } else { | |
afcea9ea JR |
6342 | atomic_store_relaxed(&ofproto->tables[tm->table_id].miss_config, |
6343 | tm->miss_config); | |
3c1bb396 | 6344 | } |
67761761 | 6345 | } |
67761761 SH |
6346 | return 0; |
6347 | } | |
6348 | ||
918f2b82 AZ |
6349 | static enum ofperr |
6350 | handle_table_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
6351 | { | |
67761761 | 6352 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
918f2b82 AZ |
6353 | struct ofputil_table_mod tm; |
6354 | enum ofperr error; | |
6355 | ||
6356 | error = reject_slave_controller(ofconn); | |
6357 | if (error) { | |
6358 | return error; | |
6359 | } | |
6360 | ||
6361 | error = ofputil_decode_table_mod(oh, &tm); | |
6362 | if (error) { | |
6363 | return error; | |
6364 | } | |
6365 | ||
67761761 | 6366 | return table_mod(ofproto, &tm); |
918f2b82 AZ |
6367 | } |
6368 | ||
777af88d AC |
6369 | static enum ofperr |
6370 | handle_bundle_control(struct ofconn *ofconn, const struct ofp_header *oh) | |
6371 | { | |
6372 | enum ofperr error; | |
6373 | struct ofputil_bundle_ctrl_msg bctrl; | |
6374 | struct ofpbuf *buf; | |
6375 | struct ofputil_bundle_ctrl_msg reply; | |
6376 | ||
ba9d374a JR |
6377 | error = reject_slave_controller(ofconn); |
6378 | if (error) { | |
6379 | return error; | |
6380 | } | |
6381 | ||
777af88d AC |
6382 | error = ofputil_decode_bundle_ctrl(oh, &bctrl); |
6383 | if (error) { | |
6384 | return error; | |
6385 | } | |
6386 | reply.flags = 0; | |
6387 | reply.bundle_id = bctrl.bundle_id; | |
6388 | ||
6389 | switch (bctrl.type) { | |
6390 | case OFPBCT_OPEN_REQUEST: | |
6391 | error = ofp_bundle_open(ofconn, bctrl.bundle_id, bctrl.flags); | |
6392 | reply.type = OFPBCT_OPEN_REPLY; | |
6393 | break; | |
6394 | case OFPBCT_CLOSE_REQUEST: | |
6395 | error = ofp_bundle_close(ofconn, bctrl.bundle_id, bctrl.flags); | |
6396 | reply.type = OFPBCT_CLOSE_REPLY;; | |
6397 | break; | |
6398 | case OFPBCT_COMMIT_REQUEST: | |
6399 | error = ofp_bundle_commit(ofconn, bctrl.bundle_id, bctrl.flags); | |
6400 | reply.type = OFPBCT_COMMIT_REPLY; | |
6401 | break; | |
6402 | case OFPBCT_DISCARD_REQUEST: | |
6403 | error = ofp_bundle_discard(ofconn, bctrl.bundle_id); | |
6404 | reply.type = OFPBCT_DISCARD_REPLY; | |
6405 | break; | |
6406 | ||
6407 | case OFPBCT_OPEN_REPLY: | |
6408 | case OFPBCT_CLOSE_REPLY: | |
6409 | case OFPBCT_COMMIT_REPLY: | |
6410 | case OFPBCT_DISCARD_REPLY: | |
6411 | return OFPERR_OFPBFC_BAD_TYPE; | |
6412 | break; | |
6413 | } | |
6414 | ||
6415 | if (!error) { | |
6416 | buf = ofputil_encode_bundle_ctrl_reply(oh, &reply); | |
6417 | ofconn_send_reply(ofconn, buf); | |
6418 | } | |
6419 | return error; | |
6420 | } | |
6421 | ||
777af88d AC |
6422 | static enum ofperr |
6423 | handle_bundle_add(struct ofconn *ofconn, const struct ofp_header *oh) | |
6424 | { | |
7ac27a04 | 6425 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
777af88d AC |
6426 | enum ofperr error; |
6427 | struct ofputil_bundle_add_msg badd; | |
7ac27a04 JR |
6428 | struct ofp_bundle_entry *bmsg; |
6429 | enum ofptype type; | |
777af88d | 6430 | |
ba9d374a JR |
6431 | error = reject_slave_controller(ofconn); |
6432 | if (error) { | |
6433 | return error; | |
6434 | } | |
6435 | ||
7ac27a04 | 6436 | error = ofputil_decode_bundle_add(oh, &badd, &type); |
777af88d AC |
6437 | if (error) { |
6438 | return error; | |
6439 | } | |
6440 | ||
7ac27a04 JR |
6441 | bmsg = ofp_bundle_entry_alloc(type, badd.msg->xid); |
6442 | ||
6443 | if (type == OFPTYPE_PORT_MOD) { | |
6444 | error = ofputil_decode_port_mod(badd.msg, &bmsg->pm, false); | |
6445 | } else if (type == OFPTYPE_FLOW_MOD) { | |
6446 | struct ofpbuf ofpacts; | |
6447 | uint64_t ofpacts_stub[1024 / 8]; | |
6448 | ||
6449 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); | |
6450 | error = ofputil_decode_flow_mod(&bmsg->fm, badd.msg, | |
6451 | ofconn_get_protocol(ofconn), | |
6452 | &ofpacts, | |
6453 | u16_to_ofp(ofproto->max_ports), | |
6454 | ofproto->n_tables); | |
6455 | /* Move actions to heap. */ | |
6456 | bmsg->fm.ofpacts = ofpbuf_steal_data(&ofpacts); | |
6457 | ||
6458 | if (!error && bmsg->fm.ofpacts_len) { | |
6459 | error = ofproto_check_ofpacts(ofproto, bmsg->fm.ofpacts, | |
6460 | bmsg->fm.ofpacts_len); | |
6461 | } | |
6462 | } else { | |
6463 | OVS_NOT_REACHED(); | |
6464 | } | |
6465 | ||
6466 | if (!error) { | |
6467 | error = ofp_bundle_add_message(ofconn, badd.bundle_id, badd.flags, | |
6468 | bmsg); | |
6469 | } | |
6470 | ||
6471 | if (error) { | |
6472 | ofp_bundle_entry_free(bmsg); | |
6473 | } | |
6474 | ||
6475 | return error; | |
777af88d AC |
6476 | } |
6477 | ||
90bf1e07 | 6478 | static enum ofperr |
d1e2cf21 | 6479 | handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg) |
15aaf599 | 6480 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 6481 | { |
6fd6ed71 | 6482 | const struct ofp_header *oh = msg->data; |
982697a4 | 6483 | enum ofptype type; |
90bf1e07 | 6484 | enum ofperr error; |
064af421 | 6485 | |
982697a4 | 6486 | error = ofptype_decode(&type, oh); |
d1e2cf21 BP |
6487 | if (error) { |
6488 | return error; | |
6489 | } | |
ff3c2c63 YT |
6490 | if (oh->version >= OFP13_VERSION && ofpmsg_is_stat_request(oh) |
6491 | && ofpmp_more(oh)) { | |
6492 | /* We have no buffer implementation for multipart requests. | |
6493 | * Report overflow for requests which consists of multiple | |
6494 | * messages. */ | |
6495 | return OFPERR_OFPBRC_MULTIPART_BUFFER_OVERFLOW; | |
6496 | } | |
064af421 | 6497 | |
982697a4 | 6498 | switch (type) { |
d1e2cf21 | 6499 | /* OpenFlow requests. */ |
982697a4 | 6500 | case OFPTYPE_ECHO_REQUEST: |
d1e2cf21 | 6501 | return handle_echo_request(ofconn, oh); |
064af421 | 6502 | |
982697a4 | 6503 | case OFPTYPE_FEATURES_REQUEST: |
d1e2cf21 | 6504 | return handle_features_request(ofconn, oh); |
064af421 | 6505 | |
982697a4 | 6506 | case OFPTYPE_GET_CONFIG_REQUEST: |
d1e2cf21 | 6507 | return handle_get_config_request(ofconn, oh); |
064af421 | 6508 | |
982697a4 BP |
6509 | case OFPTYPE_SET_CONFIG: |
6510 | return handle_set_config(ofconn, oh); | |
064af421 | 6511 | |
982697a4 BP |
6512 | case OFPTYPE_PACKET_OUT: |
6513 | return handle_packet_out(ofconn, oh); | |
064af421 | 6514 | |
982697a4 | 6515 | case OFPTYPE_PORT_MOD: |
d1e2cf21 | 6516 | return handle_port_mod(ofconn, oh); |
064af421 | 6517 | |
982697a4 | 6518 | case OFPTYPE_FLOW_MOD: |
2e4f5fcf | 6519 | return handle_flow_mod(ofconn, oh); |
064af421 | 6520 | |
7395c052 NZ |
6521 | case OFPTYPE_GROUP_MOD: |
6522 | return handle_group_mod(ofconn, oh); | |
6523 | ||
918f2b82 AZ |
6524 | case OFPTYPE_TABLE_MOD: |
6525 | return handle_table_mod(ofconn, oh); | |
6526 | ||
9cae45dc JR |
6527 | case OFPTYPE_METER_MOD: |
6528 | return handle_meter_mod(ofconn, oh); | |
6529 | ||
982697a4 | 6530 | case OFPTYPE_BARRIER_REQUEST: |
d1e2cf21 | 6531 | return handle_barrier_request(ofconn, oh); |
064af421 | 6532 | |
6ea4776b JR |
6533 | case OFPTYPE_ROLE_REQUEST: |
6534 | return handle_role_request(ofconn, oh); | |
6535 | ||
d1e2cf21 | 6536 | /* OpenFlow replies. */ |
982697a4 | 6537 | case OFPTYPE_ECHO_REPLY: |
d1e2cf21 | 6538 | return 0; |
246e61ea | 6539 | |
d1e2cf21 | 6540 | /* Nicira extension requests. */ |
982697a4 | 6541 | case OFPTYPE_FLOW_MOD_TABLE_ID: |
6c1491fb | 6542 | return handle_nxt_flow_mod_table_id(ofconn, oh); |
d1e2cf21 | 6543 | |
982697a4 | 6544 | case OFPTYPE_SET_FLOW_FORMAT: |
d1e2cf21 BP |
6545 | return handle_nxt_set_flow_format(ofconn, oh); |
6546 | ||
982697a4 | 6547 | case OFPTYPE_SET_PACKET_IN_FORMAT: |
54834960 EJ |
6548 | return handle_nxt_set_packet_in_format(ofconn, oh); |
6549 | ||
982697a4 | 6550 | case OFPTYPE_SET_CONTROLLER_ID: |
a7349929 BP |
6551 | return handle_nxt_set_controller_id(ofconn, oh); |
6552 | ||
982697a4 | 6553 | case OFPTYPE_FLOW_AGE: |
f27f2134 BP |
6554 | /* Nothing to do. */ |
6555 | return 0; | |
6556 | ||
982697a4 | 6557 | case OFPTYPE_FLOW_MONITOR_CANCEL: |
2b07c8b1 BP |
6558 | return handle_flow_monitor_cancel(ofconn, oh); |
6559 | ||
982697a4 | 6560 | case OFPTYPE_SET_ASYNC_CONFIG: |
80d5aefd BP |
6561 | return handle_nxt_set_async_config(ofconn, oh); |
6562 | ||
c423b3b3 AC |
6563 | case OFPTYPE_GET_ASYNC_REQUEST: |
6564 | return handle_nxt_get_async_request(ofconn, oh); | |
6565 | ||
349adfb2 | 6566 | /* Statistics requests. */ |
982697a4 BP |
6567 | case OFPTYPE_DESC_STATS_REQUEST: |
6568 | return handle_desc_stats_request(ofconn, oh); | |
6569 | ||
6570 | case OFPTYPE_FLOW_STATS_REQUEST: | |
6571 | return handle_flow_stats_request(ofconn, oh); | |
6572 | ||
6573 | case OFPTYPE_AGGREGATE_STATS_REQUEST: | |
6574 | return handle_aggregate_stats_request(ofconn, oh); | |
6575 | ||
6576 | case OFPTYPE_TABLE_STATS_REQUEST: | |
6577 | return handle_table_stats_request(ofconn, oh); | |
6578 | ||
3c4e10fb BP |
6579 | case OFPTYPE_TABLE_FEATURES_STATS_REQUEST: |
6580 | return handle_table_features_request(ofconn, oh); | |
6581 | ||
982697a4 BP |
6582 | case OFPTYPE_PORT_STATS_REQUEST: |
6583 | return handle_port_stats_request(ofconn, oh); | |
6584 | ||
6585 | case OFPTYPE_QUEUE_STATS_REQUEST: | |
6586 | return handle_queue_stats_request(ofconn, oh); | |
6587 | ||
6588 | case OFPTYPE_PORT_DESC_STATS_REQUEST: | |
6589 | return handle_port_desc_stats_request(ofconn, oh); | |
6590 | ||
6591 | case OFPTYPE_FLOW_MONITOR_STATS_REQUEST: | |
6592 | return handle_flow_monitor_request(ofconn, oh); | |
6593 | ||
261bd854 BP |
6594 | case OFPTYPE_METER_STATS_REQUEST: |
6595 | case OFPTYPE_METER_CONFIG_STATS_REQUEST: | |
9cae45dc JR |
6596 | return handle_meter_request(ofconn, oh, type); |
6597 | ||
261bd854 | 6598 | case OFPTYPE_METER_FEATURES_STATS_REQUEST: |
9cae45dc JR |
6599 | return handle_meter_features_request(ofconn, oh); |
6600 | ||
261bd854 | 6601 | case OFPTYPE_GROUP_STATS_REQUEST: |
7395c052 NZ |
6602 | return handle_group_stats_request(ofconn, oh); |
6603 | ||
261bd854 | 6604 | case OFPTYPE_GROUP_DESC_STATS_REQUEST: |
7395c052 NZ |
6605 | return handle_group_desc_stats_request(ofconn, oh); |
6606 | ||
261bd854 | 6607 | case OFPTYPE_GROUP_FEATURES_STATS_REQUEST: |
7395c052 NZ |
6608 | return handle_group_features_stats_request(ofconn, oh); |
6609 | ||
7395c052 | 6610 | case OFPTYPE_QUEUE_GET_CONFIG_REQUEST: |
e8f9a7bb | 6611 | return handle_queue_get_config_request(ofconn, oh); |
2e1ae200 | 6612 | |
777af88d AC |
6613 | case OFPTYPE_BUNDLE_CONTROL: |
6614 | return handle_bundle_control(ofconn, oh); | |
6615 | ||
6616 | case OFPTYPE_BUNDLE_ADD_MESSAGE: | |
6617 | return handle_bundle_add(ofconn, oh); | |
6618 | ||
982697a4 BP |
6619 | case OFPTYPE_HELLO: |
6620 | case OFPTYPE_ERROR: | |
6621 | case OFPTYPE_FEATURES_REPLY: | |
6622 | case OFPTYPE_GET_CONFIG_REPLY: | |
6623 | case OFPTYPE_PACKET_IN: | |
6624 | case OFPTYPE_FLOW_REMOVED: | |
6625 | case OFPTYPE_PORT_STATUS: | |
6626 | case OFPTYPE_BARRIER_REPLY: | |
c545d38d | 6627 | case OFPTYPE_QUEUE_GET_CONFIG_REPLY: |
982697a4 BP |
6628 | case OFPTYPE_DESC_STATS_REPLY: |
6629 | case OFPTYPE_FLOW_STATS_REPLY: | |
6630 | case OFPTYPE_QUEUE_STATS_REPLY: | |
6631 | case OFPTYPE_PORT_STATS_REPLY: | |
6632 | case OFPTYPE_TABLE_STATS_REPLY: | |
6633 | case OFPTYPE_AGGREGATE_STATS_REPLY: | |
6634 | case OFPTYPE_PORT_DESC_STATS_REPLY: | |
6635 | case OFPTYPE_ROLE_REPLY: | |
6636 | case OFPTYPE_FLOW_MONITOR_PAUSED: | |
6637 | case OFPTYPE_FLOW_MONITOR_RESUMED: | |
6638 | case OFPTYPE_FLOW_MONITOR_STATS_REPLY: | |
2e1ae200 | 6639 | case OFPTYPE_GET_ASYNC_REPLY: |
261bd854 BP |
6640 | case OFPTYPE_GROUP_STATS_REPLY: |
6641 | case OFPTYPE_GROUP_DESC_STATS_REPLY: | |
6642 | case OFPTYPE_GROUP_FEATURES_STATS_REPLY: | |
6643 | case OFPTYPE_METER_STATS_REPLY: | |
6644 | case OFPTYPE_METER_CONFIG_STATS_REPLY: | |
6645 | case OFPTYPE_METER_FEATURES_STATS_REPLY: | |
6646 | case OFPTYPE_TABLE_FEATURES_STATS_REPLY: | |
252f3411 | 6647 | case OFPTYPE_ROLE_STATUS: |
064af421 | 6648 | default: |
76ec08e0 YT |
6649 | if (ofpmsg_is_stat_request(oh)) { |
6650 | return OFPERR_OFPBRC_BAD_STAT; | |
6651 | } else { | |
6652 | return OFPERR_OFPBRC_BAD_TYPE; | |
6653 | } | |
064af421 | 6654 | } |
d1e2cf21 | 6655 | } |
064af421 | 6656 | |
b20f4073 | 6657 | static void |
e03248b7 | 6658 | handle_openflow(struct ofconn *ofconn, const struct ofpbuf *ofp_msg) |
15aaf599 | 6659 | OVS_EXCLUDED(ofproto_mutex) |
d1e2cf21 | 6660 | { |
d51c8b71 JR |
6661 | enum ofperr error = handle_openflow__(ofconn, ofp_msg); |
6662 | ||
b20f4073 | 6663 | if (error) { |
6fd6ed71 | 6664 | ofconn_send_error(ofconn, ofp_msg->data, error); |
064af421 | 6665 | } |
d1e2cf21 | 6666 | COVERAGE_INC(ofproto_recv_openflow); |
7ee20df1 BP |
6667 | } |
6668 | \f | |
6669 | /* Asynchronous operations. */ | |
6670 | ||
834fe5cb BP |
6671 | static enum ofperr |
6672 | send_buffered_packet(struct ofconn *ofconn, uint32_t buffer_id, | |
6673 | struct rule *rule) | |
15aaf599 | 6674 | OVS_REQUIRES(ofproto_mutex) |
7ee20df1 | 6675 | { |
834fe5cb BP |
6676 | enum ofperr error = 0; |
6677 | if (ofconn && buffer_id != UINT32_MAX) { | |
6678 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
cf62fa4c | 6679 | struct dp_packet *packet; |
834fe5cb | 6680 | ofp_port_t in_port; |
b277c7cc | 6681 | |
834fe5cb BP |
6682 | error = ofconn_pktbuf_retrieve(ofconn, buffer_id, &packet, &in_port); |
6683 | if (packet) { | |
6684 | struct rule_execute *re; | |
b277c7cc | 6685 | |
834fe5cb | 6686 | ofproto_rule_ref(rule); |
b277c7cc | 6687 | |
834fe5cb BP |
6688 | re = xmalloc(sizeof *re); |
6689 | re->rule = rule; | |
6690 | re->in_port = in_port; | |
6691 | re->packet = packet; | |
b277c7cc | 6692 | |
834fe5cb BP |
6693 | if (!guarded_list_push_back(&ofproto->rule_executes, |
6694 | &re->list_node, 1024)) { | |
a2143702 | 6695 | ofproto_rule_unref(rule); |
cf62fa4c | 6696 | dp_packet_delete(re->packet); |
834fe5cb | 6697 | free(re); |
e615b0a3 | 6698 | } |
af822017 | 6699 | } |
7ee20df1 | 6700 | } |
834fe5cb | 6701 | return error; |
7ee20df1 | 6702 | } |
064af421 | 6703 | \f |
064af421 | 6704 | static uint64_t |
fa60c019 | 6705 | pick_datapath_id(const struct ofproto *ofproto) |
064af421 | 6706 | { |
fa60c019 | 6707 | const struct ofport *port; |
064af421 | 6708 | |
abe529af | 6709 | port = ofproto_get_port(ofproto, OFPP_LOCAL); |
fa60c019 BP |
6710 | if (port) { |
6711 | uint8_t ea[ETH_ADDR_LEN]; | |
6712 | int error; | |
6713 | ||
6714 | error = netdev_get_etheraddr(port->netdev, ea); | |
064af421 BP |
6715 | if (!error) { |
6716 | return eth_addr_to_uint64(ea); | |
6717 | } | |
fbfa2911 BP |
6718 | VLOG_WARN("%s: could not get MAC address for %s (%s)", |
6719 | ofproto->name, netdev_get_name(port->netdev), | |
10a89ef0 | 6720 | ovs_strerror(error)); |
064af421 | 6721 | } |
fa60c019 | 6722 | return ofproto->fallback_dpid; |
064af421 BP |
6723 | } |
6724 | ||
6725 | static uint64_t | |
6726 | pick_fallback_dpid(void) | |
6727 | { | |
6728 | uint8_t ea[ETH_ADDR_LEN]; | |
70150daf | 6729 | eth_addr_nicira_random(ea); |
064af421 BP |
6730 | return eth_addr_to_uint64(ea); |
6731 | } | |
6732 | \f | |
254750ce BP |
6733 | /* Table overflow policy. */ |
6734 | ||
ad3efdcb EJ |
6735 | /* Chooses and updates 'rulep' with a rule to evict from 'table'. Sets 'rulep' |
6736 | * to NULL if the table is not configured to evict rules or if the table | |
6737 | * contains no evictable rules. (Rules with a readlock on their evict rwlock, | |
6738 | * or with no timeouts are not evictable.) */ | |
6739 | static bool | |
6740 | choose_rule_to_evict(struct oftable *table, struct rule **rulep) | |
15aaf599 | 6741 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6742 | { |
6743 | struct eviction_group *evg; | |
6744 | ||
ad3efdcb | 6745 | *rulep = NULL; |
254750ce | 6746 | if (!table->eviction_fields) { |
ad3efdcb | 6747 | return false; |
254750ce BP |
6748 | } |
6749 | ||
6750 | /* In the common case, the outer and inner loops here will each be entered | |
6751 | * exactly once: | |
6752 | * | |
6753 | * - The inner loop normally "return"s in its first iteration. If the | |
6754 | * eviction group has any evictable rules, then it always returns in | |
6755 | * some iteration. | |
6756 | * | |
6757 | * - The outer loop only iterates more than once if the largest eviction | |
6758 | * group has no evictable rules. | |
6759 | * | |
6760 | * - The outer loop can exit only if table's 'max_flows' is all filled up | |
afe2143d | 6761 | * by unevictable rules. */ |
254750ce BP |
6762 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { |
6763 | struct rule *rule; | |
6764 | ||
6765 | HEAP_FOR_EACH (rule, evg_node, &evg->rules) { | |
15aaf599 BP |
6766 | *rulep = rule; |
6767 | return true; | |
254750ce BP |
6768 | } |
6769 | } | |
6770 | ||
ad3efdcb | 6771 | return false; |
254750ce | 6772 | } |
254750ce BP |
6773 | \f |
6774 | /* Eviction groups. */ | |
6775 | ||
6776 | /* Returns the priority to use for an eviction_group that contains 'n_rules' | |
6777 | * rules. The priority contains low-order random bits to ensure that eviction | |
6778 | * groups with the same number of rules are prioritized randomly. */ | |
6779 | static uint32_t | |
6780 | eviction_group_priority(size_t n_rules) | |
6781 | { | |
6782 | uint16_t size = MIN(UINT16_MAX, n_rules); | |
6783 | return (size << 16) | random_uint16(); | |
6784 | } | |
6785 | ||
6786 | /* Updates 'evg', an eviction_group within 'table', following a change that | |
6787 | * adds or removes rules in 'evg'. */ | |
6788 | static void | |
6789 | eviction_group_resized(struct oftable *table, struct eviction_group *evg) | |
15aaf599 | 6790 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6791 | { |
6792 | heap_change(&table->eviction_groups_by_size, &evg->size_node, | |
6793 | eviction_group_priority(heap_count(&evg->rules))); | |
6794 | } | |
6795 | ||
6796 | /* Destroys 'evg', an eviction_group within 'table': | |
6797 | * | |
6798 | * - Removes all the rules, if any, from 'evg'. (It doesn't destroy the | |
6799 | * rules themselves, just removes them from the eviction group.) | |
6800 | * | |
6801 | * - Removes 'evg' from 'table'. | |
6802 | * | |
6803 | * - Frees 'evg'. */ | |
6804 | static void | |
6805 | eviction_group_destroy(struct oftable *table, struct eviction_group *evg) | |
15aaf599 | 6806 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6807 | { |
6808 | while (!heap_is_empty(&evg->rules)) { | |
6809 | struct rule *rule; | |
6810 | ||
6811 | rule = CONTAINER_OF(heap_pop(&evg->rules), struct rule, evg_node); | |
6812 | rule->eviction_group = NULL; | |
6813 | } | |
6814 | hmap_remove(&table->eviction_groups_by_id, &evg->id_node); | |
6815 | heap_remove(&table->eviction_groups_by_size, &evg->size_node); | |
6816 | heap_destroy(&evg->rules); | |
6817 | free(evg); | |
6818 | } | |
6819 | ||
6820 | /* Removes 'rule' from its eviction group, if any. */ | |
6821 | static void | |
6822 | eviction_group_remove_rule(struct rule *rule) | |
15aaf599 | 6823 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6824 | { |
6825 | if (rule->eviction_group) { | |
6826 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
6827 | struct eviction_group *evg = rule->eviction_group; | |
6828 | ||
6829 | rule->eviction_group = NULL; | |
6830 | heap_remove(&evg->rules, &rule->evg_node); | |
6831 | if (heap_is_empty(&evg->rules)) { | |
6832 | eviction_group_destroy(table, evg); | |
6833 | } else { | |
6834 | eviction_group_resized(table, evg); | |
6835 | } | |
6836 | } | |
6837 | } | |
6838 | ||
6839 | /* Hashes the 'rule''s values for the eviction_fields of 'rule''s table, and | |
6840 | * returns the hash value. */ | |
6841 | static uint32_t | |
6842 | eviction_group_hash_rule(struct rule *rule) | |
15aaf599 | 6843 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6844 | { |
6845 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
6846 | const struct mf_subfield *sf; | |
5cb7a798 | 6847 | struct flow flow; |
254750ce BP |
6848 | uint32_t hash; |
6849 | ||
6850 | hash = table->eviction_group_id_basis; | |
5cb7a798 | 6851 | miniflow_expand(&rule->cr.match.flow, &flow); |
254750ce BP |
6852 | for (sf = table->eviction_fields; |
6853 | sf < &table->eviction_fields[table->n_eviction_fields]; | |
6854 | sf++) | |
6855 | { | |
5cb7a798 | 6856 | if (mf_are_prereqs_ok(sf->field, &flow)) { |
254750ce BP |
6857 | union mf_value value; |
6858 | ||
5cb7a798 | 6859 | mf_get_value(sf->field, &flow, &value); |
254750ce BP |
6860 | if (sf->ofs) { |
6861 | bitwise_zero(&value, sf->field->n_bytes, 0, sf->ofs); | |
6862 | } | |
6863 | if (sf->ofs + sf->n_bits < sf->field->n_bytes * 8) { | |
6864 | unsigned int start = sf->ofs + sf->n_bits; | |
6865 | bitwise_zero(&value, sf->field->n_bytes, start, | |
6866 | sf->field->n_bytes * 8 - start); | |
6867 | } | |
6868 | hash = hash_bytes(&value, sf->field->n_bytes, hash); | |
6869 | } else { | |
6870 | hash = hash_int(hash, 0); | |
6871 | } | |
6872 | } | |
6873 | ||
6874 | return hash; | |
6875 | } | |
6876 | ||
6877 | /* Returns an eviction group within 'table' with the given 'id', creating one | |
6878 | * if necessary. */ | |
6879 | static struct eviction_group * | |
6880 | eviction_group_find(struct oftable *table, uint32_t id) | |
15aaf599 | 6881 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6882 | { |
6883 | struct eviction_group *evg; | |
6884 | ||
6885 | HMAP_FOR_EACH_WITH_HASH (evg, id_node, id, &table->eviction_groups_by_id) { | |
6886 | return evg; | |
6887 | } | |
6888 | ||
6889 | evg = xmalloc(sizeof *evg); | |
6890 | hmap_insert(&table->eviction_groups_by_id, &evg->id_node, id); | |
6891 | heap_insert(&table->eviction_groups_by_size, &evg->size_node, | |
6892 | eviction_group_priority(0)); | |
6893 | heap_init(&evg->rules); | |
6894 | ||
6895 | return evg; | |
6896 | } | |
6897 | ||
6898 | /* Returns an eviction priority for 'rule'. The return value should be | |
6899 | * interpreted so that higher priorities make a rule more attractive candidates | |
dc437090 JR |
6900 | * for eviction. |
6901 | * Called only if have a timeout. */ | |
254750ce | 6902 | static uint32_t |
dc437090 | 6903 | rule_eviction_priority(struct ofproto *ofproto, struct rule *rule) |
15aaf599 | 6904 | OVS_REQUIRES(ofproto_mutex) |
254750ce | 6905 | { |
dc437090 JR |
6906 | long long int expiration = LLONG_MAX; |
6907 | long long int modified; | |
254750ce BP |
6908 | uint32_t expiration_offset; |
6909 | ||
dc437090 | 6910 | /* 'modified' needs protection even when we hold 'ofproto_mutex'. */ |
d10976b7 | 6911 | ovs_mutex_lock(&rule->mutex); |
dc437090 | 6912 | modified = rule->modified; |
d10976b7 | 6913 | ovs_mutex_unlock(&rule->mutex); |
dc437090 JR |
6914 | |
6915 | if (rule->hard_timeout) { | |
6916 | expiration = modified + rule->hard_timeout * 1000; | |
6917 | } | |
6918 | if (rule->idle_timeout) { | |
6919 | uint64_t packets, bytes; | |
6920 | long long int used; | |
6921 | long long int idle_expiration; | |
6922 | ||
6923 | ofproto->ofproto_class->rule_get_stats(rule, &packets, &bytes, &used); | |
6924 | idle_expiration = used + rule->idle_timeout * 1000; | |
6925 | expiration = MIN(expiration, idle_expiration); | |
6926 | } | |
6927 | ||
254750ce BP |
6928 | if (expiration == LLONG_MAX) { |
6929 | return 0; | |
6930 | } | |
6931 | ||
6932 | /* Calculate the time of expiration as a number of (approximate) seconds | |
6933 | * after program startup. | |
6934 | * | |
6935 | * This should work OK for program runs that last UINT32_MAX seconds or | |
6936 | * less. Therefore, please restart OVS at least once every 136 years. */ | |
6937 | expiration_offset = (expiration >> 10) - (time_boot_msec() >> 10); | |
6938 | ||
6939 | /* Invert the expiration offset because we're using a max-heap. */ | |
6940 | return UINT32_MAX - expiration_offset; | |
6941 | } | |
6942 | ||
6943 | /* Adds 'rule' to an appropriate eviction group for its oftable's | |
6944 | * configuration. Does nothing if 'rule''s oftable doesn't have eviction | |
6945 | * enabled, or if 'rule' is a permanent rule (one that will never expire on its | |
6946 | * own). | |
6947 | * | |
6948 | * The caller must ensure that 'rule' is not already in an eviction group. */ | |
6949 | static void | |
6950 | eviction_group_add_rule(struct rule *rule) | |
15aaf599 | 6951 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6952 | { |
6953 | struct ofproto *ofproto = rule->ofproto; | |
6954 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
a3779dbc | 6955 | bool has_timeout; |
254750ce | 6956 | |
dc437090 JR |
6957 | /* Timeouts may be modified only when holding 'ofproto_mutex'. We have it |
6958 | * so no additional protection is needed. */ | |
a3779dbc | 6959 | has_timeout = rule->hard_timeout || rule->idle_timeout; |
a3779dbc EJ |
6960 | |
6961 | if (table->eviction_fields && has_timeout) { | |
254750ce BP |
6962 | struct eviction_group *evg; |
6963 | ||
6964 | evg = eviction_group_find(table, eviction_group_hash_rule(rule)); | |
6965 | ||
6966 | rule->eviction_group = evg; | |
6967 | heap_insert(&evg->rules, &rule->evg_node, | |
dc437090 | 6968 | rule_eviction_priority(ofproto, rule)); |
254750ce BP |
6969 | eviction_group_resized(table, evg); |
6970 | } | |
6971 | } | |
6972 | \f | |
d0918789 BP |
6973 | /* oftables. */ |
6974 | ||
6975 | /* Initializes 'table'. */ | |
6976 | static void | |
6977 | oftable_init(struct oftable *table) | |
6978 | { | |
5c67e4af | 6979 | memset(table, 0, sizeof *table); |
d70e8c28 | 6980 | classifier_init(&table->cls, flow_segment_u64s); |
ec1c5c7e | 6981 | table->max_flows = UINT_MAX; |
3c1bb396 | 6982 | atomic_init(&table->miss_config, OFPUTIL_TABLE_MISS_DEFAULT); |
f017d986 | 6983 | |
f017d986 JR |
6984 | classifier_set_prefix_fields(&table->cls, default_prefix_fields, |
6985 | ARRAY_SIZE(default_prefix_fields)); | |
d611866c SH |
6986 | |
6987 | atomic_init(&table->n_matched, 0); | |
6988 | atomic_init(&table->n_missed, 0); | |
d0918789 BP |
6989 | } |
6990 | ||
254750ce | 6991 | /* Destroys 'table', including its classifier and eviction groups. |
d0918789 BP |
6992 | * |
6993 | * The caller is responsible for freeing 'table' itself. */ | |
6994 | static void | |
6995 | oftable_destroy(struct oftable *table) | |
6996 | { | |
cb22974d | 6997 | ovs_assert(classifier_is_empty(&table->cls)); |
254750ce | 6998 | oftable_disable_eviction(table); |
d0918789 | 6999 | classifier_destroy(&table->cls); |
254750ce BP |
7000 | free(table->name); |
7001 | } | |
7002 | ||
7003 | /* Changes the name of 'table' to 'name'. If 'name' is NULL or the empty | |
7004 | * string, then 'table' will use its default name. | |
7005 | * | |
7006 | * This only affects the name exposed for a table exposed through the OpenFlow | |
7007 | * OFPST_TABLE (as printed by "ovs-ofctl dump-tables"). */ | |
7008 | static void | |
7009 | oftable_set_name(struct oftable *table, const char *name) | |
7010 | { | |
7011 | if (name && name[0]) { | |
7012 | int len = strnlen(name, OFP_MAX_TABLE_NAME_LEN); | |
7013 | if (!table->name || strncmp(name, table->name, len)) { | |
7014 | free(table->name); | |
7015 | table->name = xmemdup0(name, len); | |
7016 | } | |
7017 | } else { | |
7018 | free(table->name); | |
7019 | table->name = NULL; | |
7020 | } | |
7021 | } | |
7022 | ||
7023 | /* oftables support a choice of two policies when adding a rule would cause the | |
7024 | * number of flows in the table to exceed the configured maximum number: either | |
7025 | * they can refuse to add the new flow or they can evict some existing flow. | |
7026 | * This function configures the former policy on 'table'. */ | |
7027 | static void | |
7028 | oftable_disable_eviction(struct oftable *table) | |
15aaf599 | 7029 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
7030 | { |
7031 | if (table->eviction_fields) { | |
7032 | struct eviction_group *evg, *next; | |
7033 | ||
7034 | HMAP_FOR_EACH_SAFE (evg, next, id_node, | |
7035 | &table->eviction_groups_by_id) { | |
7036 | eviction_group_destroy(table, evg); | |
7037 | } | |
7038 | hmap_destroy(&table->eviction_groups_by_id); | |
7039 | heap_destroy(&table->eviction_groups_by_size); | |
7040 | ||
7041 | free(table->eviction_fields); | |
7042 | table->eviction_fields = NULL; | |
7043 | table->n_eviction_fields = 0; | |
7044 | } | |
7045 | } | |
7046 | ||
7047 | /* oftables support a choice of two policies when adding a rule would cause the | |
7048 | * number of flows in the table to exceed the configured maximum number: either | |
7049 | * they can refuse to add the new flow or they can evict some existing flow. | |
7050 | * This function configures the latter policy on 'table', with fairness based | |
7051 | * on the values of the 'n_fields' fields specified in 'fields'. (Specifying | |
7052 | * 'n_fields' as 0 disables fairness.) */ | |
7053 | static void | |
7054 | oftable_enable_eviction(struct oftable *table, | |
7055 | const struct mf_subfield *fields, size_t n_fields) | |
15aaf599 | 7056 | OVS_REQUIRES(ofproto_mutex) |
254750ce | 7057 | { |
254750ce BP |
7058 | struct rule *rule; |
7059 | ||
7060 | if (table->eviction_fields | |
7061 | && n_fields == table->n_eviction_fields | |
7062 | && (!n_fields | |
7063 | || !memcmp(fields, table->eviction_fields, | |
7064 | n_fields * sizeof *fields))) { | |
7065 | /* No change. */ | |
7066 | return; | |
7067 | } | |
7068 | ||
7069 | oftable_disable_eviction(table); | |
7070 | ||
7071 | table->n_eviction_fields = n_fields; | |
7072 | table->eviction_fields = xmemdup(fields, n_fields * sizeof *fields); | |
7073 | ||
7074 | table->eviction_group_id_basis = random_uint32(); | |
7075 | hmap_init(&table->eviction_groups_by_id); | |
7076 | heap_init(&table->eviction_groups_by_size); | |
7077 | ||
5f0476ce | 7078 | CLS_FOR_EACH (rule, cr, &table->cls) { |
254750ce BP |
7079 | eviction_group_add_rule(rule); |
7080 | } | |
d0918789 BP |
7081 | } |
7082 | ||
bc5e6a91 JR |
7083 | /* Inserts 'rule' from the ofproto data structures BEFORE caller has inserted |
7084 | * it to the classifier. */ | |
7085 | static void | |
7086 | ofproto_rule_insert__(struct ofproto *ofproto, struct rule *rule) | |
7087 | OVS_REQUIRES(ofproto_mutex) | |
7088 | { | |
7089 | const struct rule_actions *actions = rule_get_actions(rule); | |
7090 | ||
7091 | if (rule->hard_timeout || rule->idle_timeout) { | |
7092 | list_insert(&ofproto->expirable, &rule->expirable); | |
7093 | } | |
7094 | cookies_insert(ofproto, rule); | |
7095 | eviction_group_add_rule(rule); | |
7096 | if (actions->has_meter) { | |
7097 | meter_insert_rule(rule); | |
7098 | } | |
7099 | } | |
7100 | ||
802f84ff JR |
7101 | /* Removes 'rule' from the ofproto data structures AFTER caller has removed |
7102 | * it from the classifier. */ | |
d0918789 | 7103 | static void |
802f84ff | 7104 | ofproto_rule_remove__(struct ofproto *ofproto, struct rule *rule) |
15aaf599 | 7105 | OVS_REQUIRES(ofproto_mutex) |
d0918789 | 7106 | { |
98eaac36 | 7107 | cookies_remove(ofproto, rule); |
2c916028 | 7108 | |
254750ce | 7109 | eviction_group_remove_rule(rule); |
e503cc19 SH |
7110 | if (!list_is_empty(&rule->expirable)) { |
7111 | list_remove(&rule->expirable); | |
7112 | } | |
9cae45dc JR |
7113 | if (!list_is_empty(&rule->meter_list_node)) { |
7114 | list_remove(&rule->meter_list_node); | |
51b50dfd | 7115 | list_init(&rule->meter_list_node); |
9cae45dc | 7116 | } |
d0918789 BP |
7117 | } |
7118 | ||
0b4f2078 EJ |
7119 | static void |
7120 | oftable_remove_rule(struct rule *rule) | |
15aaf599 | 7121 | OVS_REQUIRES(ofproto_mutex) |
0b4f2078 | 7122 | { |
802f84ff JR |
7123 | struct classifier *cls = &rule->ofproto->tables[rule->table_id].cls; |
7124 | ||
7125 | if (classifier_remove(cls, &rule->cr)) { | |
7126 | ofproto_rule_remove__(rule->ofproto, rule); | |
7127 | } | |
0b4f2078 | 7128 | } |
d0918789 | 7129 | \f |
abe529af | 7130 | /* unixctl commands. */ |
7aa697dd | 7131 | |
abe529af | 7132 | struct ofproto * |
2ac6bedd | 7133 | ofproto_lookup(const char *name) |
7aa697dd | 7134 | { |
2ac6bedd | 7135 | struct ofproto *ofproto; |
7aa697dd | 7136 | |
2ac6bedd BP |
7137 | HMAP_FOR_EACH_WITH_HASH (ofproto, hmap_node, hash_string(name, 0), |
7138 | &all_ofprotos) { | |
7139 | if (!strcmp(ofproto->name, name)) { | |
7140 | return ofproto; | |
7141 | } | |
7aa697dd | 7142 | } |
2ac6bedd | 7143 | return NULL; |
7aa697dd BP |
7144 | } |
7145 | ||
7146 | static void | |
0e15264f BP |
7147 | ofproto_unixctl_list(struct unixctl_conn *conn, int argc OVS_UNUSED, |
7148 | const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED) | |
7aa697dd | 7149 | { |
7aa697dd | 7150 | struct ofproto *ofproto; |
7aa697dd | 7151 | struct ds results; |
7aa697dd | 7152 | |
7aa697dd | 7153 | ds_init(&results); |
2ac6bedd BP |
7154 | HMAP_FOR_EACH (ofproto, hmap_node, &all_ofprotos) { |
7155 | ds_put_format(&results, "%s\n", ofproto->name); | |
7aa697dd | 7156 | } |
bde9f75d | 7157 | unixctl_command_reply(conn, ds_cstr(&results)); |
7aa697dd | 7158 | ds_destroy(&results); |
7aa697dd BP |
7159 | } |
7160 | ||
7161 | static void | |
7162 | ofproto_unixctl_init(void) | |
7163 | { | |
7164 | static bool registered; | |
7165 | if (registered) { | |
7166 | return; | |
7167 | } | |
7168 | registered = true; | |
7169 | ||
0e15264f BP |
7170 | unixctl_command_register("ofproto/list", "", 0, 0, |
7171 | ofproto_unixctl_list, NULL); | |
064af421 | 7172 | } |
52a90c29 BP |
7173 | \f |
7174 | /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.) | |
7175 | * | |
7176 | * This is deprecated. It is only for compatibility with broken device drivers | |
7177 | * in old versions of Linux that do not properly support VLANs when VLAN | |
7178 | * devices are not used. When broken device drivers are no longer in | |
7179 | * widespread use, we will delete these interfaces. */ | |
7180 | ||
7181 | /* Sets a 1-bit in the 4096-bit 'vlan_bitmap' for each VLAN ID that is matched | |
7182 | * (exactly) by an OpenFlow rule in 'ofproto'. */ | |
7183 | void | |
7184 | ofproto_get_vlan_usage(struct ofproto *ofproto, unsigned long int *vlan_bitmap) | |
7185 | { | |
ac4aa4c8 JR |
7186 | struct match match; |
7187 | struct cls_rule target; | |
d0918789 | 7188 | const struct oftable *oftable; |
52a90c29 | 7189 | |
ac4aa4c8 JR |
7190 | match_init_catchall(&match); |
7191 | match_set_vlan_vid_masked(&match, htons(VLAN_CFI), htons(VLAN_CFI)); | |
7192 | cls_rule_init(&target, &match, 0); | |
7193 | ||
52a90c29 BP |
7194 | free(ofproto->vlan_bitmap); |
7195 | ofproto->vlan_bitmap = bitmap_allocate(4096); | |
7196 | ofproto->vlans_changed = false; | |
7197 | ||
d0918789 | 7198 | OFPROTO_FOR_EACH_TABLE (oftable, ofproto) { |
ac4aa4c8 | 7199 | struct rule *rule; |
52a90c29 | 7200 | |
5f0476ce | 7201 | CLS_FOR_EACH_TARGET (rule, cr, &oftable->cls, &target) { |
ac4aa4c8 JR |
7202 | if (minimask_get_vid_mask(&rule->cr.match.mask) == VLAN_VID_MASK) { |
7203 | uint16_t vid = miniflow_get_vid(&rule->cr.match.flow); | |
7204 | ||
7205 | bitmap_set1(vlan_bitmap, vid); | |
7206 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
52a90c29 BP |
7207 | } |
7208 | } | |
7209 | } | |
059ef3c6 EJ |
7210 | |
7211 | cls_rule_destroy(&target); | |
52a90c29 BP |
7212 | } |
7213 | ||
7214 | /* Returns true if new VLANs have come into use by the flow table since the | |
7215 | * last call to ofproto_get_vlan_usage(). | |
7216 | * | |
7217 | * We don't track when old VLANs stop being used. */ | |
7218 | bool | |
7219 | ofproto_has_vlan_usage_changed(const struct ofproto *ofproto) | |
7220 | { | |
7221 | return ofproto->vlans_changed; | |
7222 | } | |
7223 | ||
7224 | /* Configures a VLAN splinter binding between the ports identified by OpenFlow | |
7225 | * port numbers 'vlandev_ofp_port' and 'realdev_ofp_port'. If | |
7226 | * 'realdev_ofp_port' is nonzero, then the VLAN device is enslaved to the real | |
7227 | * device as a VLAN splinter for VLAN ID 'vid'. If 'realdev_ofp_port' is zero, | |
7228 | * then the VLAN device is un-enslaved. */ | |
7229 | int | |
4e022ec0 AW |
7230 | ofproto_port_set_realdev(struct ofproto *ofproto, ofp_port_t vlandev_ofp_port, |
7231 | ofp_port_t realdev_ofp_port, int vid) | |
52a90c29 BP |
7232 | { |
7233 | struct ofport *ofport; | |
7234 | int error; | |
7235 | ||
cb22974d | 7236 | ovs_assert(vlandev_ofp_port != realdev_ofp_port); |
52a90c29 BP |
7237 | |
7238 | ofport = ofproto_get_port(ofproto, vlandev_ofp_port); | |
7239 | if (!ofport) { | |
7240 | VLOG_WARN("%s: cannot set realdev on nonexistent port %"PRIu16, | |
7241 | ofproto->name, vlandev_ofp_port); | |
7242 | return EINVAL; | |
7243 | } | |
7244 | ||
7245 | if (!ofproto->ofproto_class->set_realdev) { | |
7246 | if (!vlandev_ofp_port) { | |
7247 | return 0; | |
7248 | } | |
7249 | VLOG_WARN("%s: vlan splinters not supported", ofproto->name); | |
7250 | return EOPNOTSUPP; | |
7251 | } | |
7252 | ||
7253 | error = ofproto->ofproto_class->set_realdev(ofport, realdev_ofp_port, vid); | |
7254 | if (error) { | |
7255 | VLOG_WARN("%s: setting realdev on port %"PRIu16" (%s) failed (%s)", | |
7256 | ofproto->name, vlandev_ofp_port, | |
10a89ef0 | 7257 | netdev_get_name(ofport->netdev), ovs_strerror(error)); |
52a90c29 BP |
7258 | } |
7259 | return error; | |
7260 | } |