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064af421 | 1 | /* |
c5f81b20 | 2 | * Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014 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" |
064af421 BP |
47 | #include "packets.h" |
48 | #include "pinsched.h" | |
49 | #include "pktbuf.h" | |
50 | #include "poll-loop.h" | |
254750ce | 51 | #include "random.h" |
da4a6191 | 52 | #include "seq.h" |
064af421 | 53 | #include "shash.h" |
0d085684 | 54 | #include "simap.h" |
e8f9a7bb | 55 | #include "smap.h" |
b3c01ed3 | 56 | #include "sset.h" |
064af421 | 57 | #include "timeval.h" |
c4617b3c | 58 | #include "unaligned.h" |
4f2cad2c | 59 | #include "unixctl.h" |
5136ce49 | 60 | #include "vlog.h" |
777af88d | 61 | #include "bundles.h" |
064af421 | 62 | |
d98e6007 | 63 | VLOG_DEFINE_THIS_MODULE(ofproto); |
064af421 | 64 | |
d76f09ea | 65 | COVERAGE_DEFINE(ofproto_flush); |
d76f09ea BP |
66 | COVERAGE_DEFINE(ofproto_packet_out); |
67 | COVERAGE_DEFINE(ofproto_queue_req); | |
68 | COVERAGE_DEFINE(ofproto_recv_openflow); | |
69 | COVERAGE_DEFINE(ofproto_reinit_ports); | |
d76f09ea BP |
70 | COVERAGE_DEFINE(ofproto_update_port); |
71 | ||
f017d986 JR |
72 | /* Default fields to use for prefix tries in each flow table, unless something |
73 | * else is configured. */ | |
74 | const enum mf_field_id default_prefix_fields[2] = | |
75 | { MFF_IPV4_DST, MFF_IPV4_SRC }; | |
76 | ||
d0918789 BP |
77 | /* oftable. */ |
78 | static void oftable_init(struct oftable *); | |
79 | static void oftable_destroy(struct oftable *); | |
878ae780 | 80 | |
254750ce BP |
81 | static void oftable_set_name(struct oftable *, const char *name); |
82 | ||
834fe5cb BP |
83 | static enum ofperr evict_rules_from_table(struct oftable *, |
84 | unsigned int extra_space) | |
85 | OVS_REQUIRES(ofproto_mutex); | |
254750ce BP |
86 | static void oftable_disable_eviction(struct oftable *); |
87 | static void oftable_enable_eviction(struct oftable *, | |
88 | const struct mf_subfield *fields, | |
89 | size_t n_fields); | |
90 | ||
15aaf599 | 91 | static void oftable_remove_rule(struct rule *rule) OVS_REQUIRES(ofproto_mutex); |
8b81d1ef | 92 | static void oftable_remove_rule__(struct ofproto *, struct rule *) |
15aaf599 | 93 | OVS_REQUIRES(ofproto_mutex); |
064af421 | 94 | |
254750ce BP |
95 | /* A set of rules within a single OpenFlow table (oftable) that have the same |
96 | * values for the oftable's eviction_fields. A rule to be evicted, when one is | |
97 | * needed, is taken from the eviction group that contains the greatest number | |
98 | * of rules. | |
99 | * | |
100 | * An oftable owns any number of eviction groups, each of which contains any | |
101 | * number of rules. | |
102 | * | |
103 | * Membership in an eviction group is imprecise, based on the hash of the | |
104 | * oftable's eviction_fields (in the eviction_group's id_node.hash member). | |
105 | * That is, if two rules have different eviction_fields, but those | |
106 | * eviction_fields hash to the same value, then they will belong to the same | |
107 | * eviction_group anyway. | |
108 | * | |
109 | * (When eviction is not enabled on an oftable, we don't track any eviction | |
110 | * groups, to save time and space.) */ | |
111 | struct eviction_group { | |
112 | struct hmap_node id_node; /* In oftable's "eviction_groups_by_id". */ | |
113 | struct heap_node size_node; /* In oftable's "eviction_groups_by_size". */ | |
114 | struct heap rules; /* Contains "struct rule"s. */ | |
115 | }; | |
116 | ||
3d900aa7 BP |
117 | static bool choose_rule_to_evict(struct oftable *table, struct rule **rulep) |
118 | OVS_REQUIRES(ofproto_mutex); | |
3d900aa7 BP |
119 | static uint32_t rule_eviction_priority(struct ofproto *ofproto, struct rule *) |
120 | OVS_REQUIRES(ofproto_mutex);; | |
121 | static void eviction_group_add_rule(struct rule *) | |
122 | OVS_REQUIRES(ofproto_mutex); | |
123 | static void eviction_group_remove_rule(struct rule *) | |
124 | OVS_REQUIRES(ofproto_mutex); | |
f29152ca | 125 | |
a9b22b7f BP |
126 | /* Criteria that flow_mod and other operations use for selecting rules on |
127 | * which to operate. */ | |
128 | struct rule_criteria { | |
129 | /* An OpenFlow table or 255 for all tables. */ | |
130 | uint8_t table_id; | |
131 | ||
132 | /* OpenFlow matching criteria. Interpreted different in "loose" way by | |
133 | * collect_rules_loose() and "strict" way by collect_rules_strict(), as | |
134 | * defined in the OpenFlow spec. */ | |
135 | struct cls_rule cr; | |
136 | ||
137 | /* Matching criteria for the OpenFlow cookie. Consider a bit B in a rule's | |
138 | * cookie and the corresponding bits C in 'cookie' and M in 'cookie_mask'. | |
139 | * The rule will not be selected if M is 1 and B != C. */ | |
140 | ovs_be64 cookie; | |
141 | ovs_be64 cookie_mask; | |
142 | ||
143 | /* Selection based on actions within a rule: | |
144 | * | |
145 | * If out_port != OFPP_ANY, selects only rules that output to out_port. | |
146 | * If out_group != OFPG_ALL, select only rules that output to out_group. */ | |
147 | ofp_port_t out_port; | |
148 | uint32_t out_group; | |
dd51dae2 BP |
149 | |
150 | /* If true, collects only rules that are modifiable. */ | |
151 | bool include_hidden; | |
152 | bool include_readonly; | |
a9b22b7f BP |
153 | }; |
154 | ||
155 | static void rule_criteria_init(struct rule_criteria *, uint8_t table_id, | |
156 | const struct match *match, | |
157 | unsigned int priority, | |
158 | ovs_be64 cookie, ovs_be64 cookie_mask, | |
159 | ofp_port_t out_port, uint32_t out_group); | |
dd51dae2 BP |
160 | static void rule_criteria_require_rw(struct rule_criteria *, |
161 | bool can_write_readonly); | |
a9b22b7f BP |
162 | static void rule_criteria_destroy(struct rule_criteria *); |
163 | ||
35f48b8b BP |
164 | static enum ofperr collect_rules_loose(struct ofproto *, |
165 | const struct rule_criteria *, | |
166 | struct rule_collection *); | |
167 | ||
15aaf599 BP |
168 | /* A packet that needs to be passed to rule_execute(). |
169 | * | |
170 | * (We can't do this immediately from ofopgroup_complete() because that holds | |
171 | * ofproto_mutex, which rule_execute() needs released.) */ | |
35412852 BP |
172 | struct rule_execute { |
173 | struct list list_node; /* In struct ofproto's "rule_executes" list. */ | |
174 | struct rule *rule; /* Owns a reference to the rule. */ | |
175 | ofp_port_t in_port; | |
176 | struct ofpbuf *packet; /* Owns the packet. */ | |
177 | }; | |
178 | ||
15aaf599 | 179 | static void run_rule_executes(struct ofproto *) OVS_EXCLUDED(ofproto_mutex); |
35412852 BP |
180 | static void destroy_rule_executes(struct ofproto *); |
181 | ||
35f48b8b BP |
182 | struct learned_cookie { |
183 | union { | |
184 | /* In struct ofproto's 'learned_cookies' hmap. */ | |
185 | struct hmap_node hmap_node OVS_GUARDED_BY(ofproto_mutex); | |
186 | ||
187 | /* In 'dead_cookies' list when removed from hmap. */ | |
188 | struct list list_node; | |
189 | } u; | |
190 | ||
191 | /* Key. */ | |
192 | ovs_be64 cookie OVS_GUARDED_BY(ofproto_mutex); | |
193 | uint8_t table_id OVS_GUARDED_BY(ofproto_mutex); | |
194 | ||
195 | /* Number of references from "learn" actions. | |
196 | * | |
197 | * When this drops to 0, all of the flows in 'table_id' with the specified | |
198 | * 'cookie' are deleted. */ | |
199 | int n OVS_GUARDED_BY(ofproto_mutex); | |
200 | }; | |
201 | ||
202 | static const struct ofpact_learn *next_learn_with_delete( | |
203 | const struct rule_actions *, const struct ofpact_learn *start); | |
204 | ||
205 | static void learned_cookies_inc(struct ofproto *, const struct rule_actions *) | |
206 | OVS_REQUIRES(ofproto_mutex); | |
207 | static void learned_cookies_dec(struct ofproto *, const struct rule_actions *, | |
208 | struct list *dead_cookies) | |
209 | OVS_REQUIRES(ofproto_mutex); | |
210 | static void learned_cookies_flush(struct ofproto *, struct list *dead_cookies) | |
211 | OVS_REQUIRES(ofproto_mutex); | |
212 | ||
d0918789 | 213 | /* ofport. */ |
15aaf599 | 214 | static void ofport_destroy__(struct ofport *) OVS_EXCLUDED(ofproto_mutex); |
d0918789 BP |
215 | static void ofport_destroy(struct ofport *); |
216 | ||
217 | static void update_port(struct ofproto *, const char *devname); | |
218 | static int init_ports(struct ofproto *); | |
219 | static void reinit_ports(struct ofproto *); | |
7ee20df1 | 220 | |
fdcea803 GS |
221 | static long long int ofport_get_usage(const struct ofproto *, |
222 | ofp_port_t ofp_port); | |
223 | static void ofport_set_usage(struct ofproto *, ofp_port_t ofp_port, | |
224 | long long int last_used); | |
865b26a4 | 225 | static void ofport_remove_usage(struct ofproto *, ofp_port_t ofp_port); |
fdcea803 GS |
226 | |
227 | /* Ofport usage. | |
228 | * | |
229 | * Keeps track of the currently used and recently used ofport values and is | |
230 | * used to prevent immediate recycling of ofport values. */ | |
231 | struct ofport_usage { | |
232 | struct hmap_node hmap_node; /* In struct ofproto's "ofport_usage" hmap. */ | |
233 | ofp_port_t ofp_port; /* OpenFlow port number. */ | |
234 | long long int last_used; /* Last time the 'ofp_port' was used. LLONG_MAX | |
235 | represents in-use ofports. */ | |
236 | }; | |
237 | ||
254750ce | 238 | /* rule. */ |
254750ce | 239 | static void ofproto_rule_send_removed(struct rule *, uint8_t reason); |
834fe5cb | 240 | static bool rule_is_readonly(const struct rule *); |
254750ce | 241 | |
baae3d02 BP |
242 | /* The source of a flow_mod request, in the code that processes flow_mods. |
243 | * | |
244 | * A flow table modification request can be generated externally, via OpenFlow, | |
245 | * or internally through a function call. This structure indicates the source | |
246 | * of an OpenFlow-generated flow_mod. For an internal flow_mod, it isn't | |
247 | * meaningful and thus supplied as NULL. */ | |
248 | struct flow_mod_requester { | |
249 | struct ofconn *ofconn; /* Connection on which flow_mod arrived. */ | |
834fe5cb | 250 | ovs_be32 xid; /* OpenFlow xid of flow_mod request. */ |
baae3d02 BP |
251 | }; |
252 | ||
d0918789 | 253 | /* OpenFlow. */ |
baae3d02 BP |
254 | static enum ofperr add_flow(struct ofproto *, struct ofputil_flow_mod *, |
255 | const struct flow_mod_requester *); | |
256 | ||
257 | static enum ofperr modify_flows__(struct ofproto *, struct ofputil_flow_mod *, | |
258 | const struct rule_collection *, | |
259 | const struct flow_mod_requester *); | |
9ca4a86f BP |
260 | static void delete_flows__(const struct rule_collection *, |
261 | enum ofp_flow_removed_reason, | |
262 | const struct flow_mod_requester *) | |
15aaf599 | 263 | OVS_REQUIRES(ofproto_mutex); |
834fe5cb BP |
264 | |
265 | static enum ofperr send_buffered_packet(struct ofconn *, uint32_t buffer_id, | |
266 | struct rule *) | |
267 | OVS_REQUIRES(ofproto_mutex); | |
268 | ||
7e9f8266 BP |
269 | static bool ofproto_group_exists__(const struct ofproto *ofproto, |
270 | uint32_t group_id) | |
271 | OVS_REQ_RDLOCK(ofproto->groups_rwlock); | |
84d68566 SH |
272 | static bool ofproto_group_exists(const struct ofproto *ofproto, |
273 | uint32_t group_id) | |
7e9f8266 | 274 | OVS_EXCLUDED(ofproto->groups_rwlock); |
7395c052 | 275 | static enum ofperr add_group(struct ofproto *, struct ofputil_group_mod *); |
b20f4073 | 276 | static void handle_openflow(struct ofconn *, const struct ofpbuf *); |
baae3d02 | 277 | static enum ofperr handle_flow_mod__(struct ofproto *, |
e3b56933 | 278 | struct ofputil_flow_mod *, |
baae3d02 | 279 | const struct flow_mod_requester *) |
15aaf599 | 280 | OVS_EXCLUDED(ofproto_mutex); |
65e0be10 BP |
281 | static void calc_duration(long long int start, long long int now, |
282 | uint32_t *sec, uint32_t *nsec); | |
f29152ca | 283 | |
d0918789 BP |
284 | /* ofproto. */ |
285 | static uint64_t pick_datapath_id(const struct ofproto *); | |
286 | static uint64_t pick_fallback_dpid(void); | |
287 | static void ofproto_destroy__(struct ofproto *); | |
ada3428f | 288 | static void update_mtu(struct ofproto *, struct ofport *); |
6b3f7f02 | 289 | static void meter_delete(struct ofproto *, uint32_t first, uint32_t last); |
062fea06 | 290 | static void meter_insert_rule(struct rule *); |
f29152ca | 291 | |
d0918789 | 292 | /* unixctl. */ |
abe529af | 293 | static void ofproto_unixctl_init(void); |
f29152ca | 294 | |
abe529af BP |
295 | /* All registered ofproto classes, in probe order. */ |
296 | static const struct ofproto_class **ofproto_classes; | |
297 | static size_t n_ofproto_classes; | |
298 | static size_t allocated_ofproto_classes; | |
7aa697dd | 299 | |
15aaf599 BP |
300 | /* Global lock that protects all flow table operations. */ |
301 | struct ovs_mutex ofproto_mutex = OVS_MUTEX_INITIALIZER; | |
abe7b10f | 302 | |
e79a6c83 | 303 | unsigned ofproto_flow_limit = OFPROTO_FLOW_LIMIT_DEFAULT; |
72310b04 | 304 | unsigned ofproto_max_idle = OFPROTO_MAX_IDLE_DEFAULT; |
380f49c4 | 305 | |
e79a6c83 | 306 | size_t n_handlers, n_revalidators; |
6567010f | 307 | |
f797957a | 308 | /* Map from datapath name to struct ofproto, for use by unixctl commands. */ |
abe529af | 309 | static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos); |
ebe482fd | 310 | |
e1b1d06a JP |
311 | /* Initial mappings of port to OpenFlow number mappings. */ |
312 | static struct shash init_ofp_ports = SHASH_INITIALIZER(&init_ofp_ports); | |
313 | ||
abe529af | 314 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
f29152ca | 315 | |
40358701 GS |
316 | /* The default value of true waits for flow restore. */ |
317 | static bool flow_restore_wait = true; | |
318 | ||
b0408fca JP |
319 | /* Must be called to initialize the ofproto library. |
320 | * | |
321 | * The caller may pass in 'iface_hints', which contains an shash of | |
322 | * "iface_hint" elements indexed by the interface's name. The provider | |
323 | * may use these hints to describe the startup configuration in order to | |
324 | * reinitialize its state. The caller owns the provided data, so a | |
325 | * provider will make copies of anything required. An ofproto provider | |
326 | * will remove any existing state that is not described by the hint, and | |
327 | * may choose to remove it all. */ | |
328 | void | |
329 | ofproto_init(const struct shash *iface_hints) | |
abe529af | 330 | { |
e1b1d06a | 331 | struct shash_node *node; |
b0408fca | 332 | size_t i; |
f29152ca | 333 | |
b0408fca JP |
334 | ofproto_class_register(&ofproto_dpif_class); |
335 | ||
e1b1d06a JP |
336 | /* Make a local copy, since we don't own 'iface_hints' elements. */ |
337 | SHASH_FOR_EACH(node, iface_hints) { | |
338 | const struct iface_hint *orig_hint = node->data; | |
339 | struct iface_hint *new_hint = xmalloc(sizeof *new_hint); | |
340 | const char *br_type = ofproto_normalize_type(orig_hint->br_type); | |
341 | ||
342 | new_hint->br_name = xstrdup(orig_hint->br_name); | |
343 | new_hint->br_type = xstrdup(br_type); | |
344 | new_hint->ofp_port = orig_hint->ofp_port; | |
345 | ||
346 | shash_add(&init_ofp_ports, node->name, new_hint); | |
347 | } | |
348 | ||
b0408fca | 349 | for (i = 0; i < n_ofproto_classes; i++) { |
e1b1d06a | 350 | ofproto_classes[i]->init(&init_ofp_ports); |
abe529af BP |
351 | } |
352 | } | |
f29152ca | 353 | |
abe529af BP |
354 | /* 'type' should be a normalized datapath type, as returned by |
355 | * ofproto_normalize_type(). Returns the corresponding ofproto_class | |
356 | * structure, or a null pointer if there is none registered for 'type'. */ | |
357 | static const struct ofproto_class * | |
358 | ofproto_class_find__(const char *type) | |
359 | { | |
360 | size_t i; | |
f29152ca | 361 | |
abe529af BP |
362 | for (i = 0; i < n_ofproto_classes; i++) { |
363 | const struct ofproto_class *class = ofproto_classes[i]; | |
364 | struct sset types; | |
365 | bool found; | |
064af421 | 366 | |
abe529af BP |
367 | sset_init(&types); |
368 | class->enumerate_types(&types); | |
369 | found = sset_contains(&types, type); | |
370 | sset_destroy(&types); | |
bcf84111 | 371 | |
abe529af BP |
372 | if (found) { |
373 | return class; | |
374 | } | |
375 | } | |
376 | VLOG_WARN("unknown datapath type %s", type); | |
377 | return NULL; | |
378 | } | |
064af421 | 379 | |
abe529af BP |
380 | /* Registers a new ofproto class. After successful registration, new ofprotos |
381 | * of that type can be created using ofproto_create(). */ | |
382 | int | |
383 | ofproto_class_register(const struct ofproto_class *new_class) | |
384 | { | |
385 | size_t i; | |
7aa697dd | 386 | |
abe529af BP |
387 | for (i = 0; i < n_ofproto_classes; i++) { |
388 | if (ofproto_classes[i] == new_class) { | |
389 | return EEXIST; | |
390 | } | |
391 | } | |
064af421 | 392 | |
abe529af BP |
393 | if (n_ofproto_classes >= allocated_ofproto_classes) { |
394 | ofproto_classes = x2nrealloc(ofproto_classes, | |
395 | &allocated_ofproto_classes, | |
396 | sizeof *ofproto_classes); | |
397 | } | |
398 | ofproto_classes[n_ofproto_classes++] = new_class; | |
399 | return 0; | |
400 | } | |
064af421 | 401 | |
abe529af BP |
402 | /* Unregisters a datapath provider. 'type' must have been previously |
403 | * registered and not currently be in use by any ofprotos. After | |
404 | * unregistration new datapaths of that type cannot be opened using | |
405 | * ofproto_create(). */ | |
406 | int | |
407 | ofproto_class_unregister(const struct ofproto_class *class) | |
408 | { | |
409 | size_t i; | |
76ce9432 | 410 | |
abe529af BP |
411 | for (i = 0; i < n_ofproto_classes; i++) { |
412 | if (ofproto_classes[i] == class) { | |
413 | for (i++; i < n_ofproto_classes; i++) { | |
414 | ofproto_classes[i - 1] = ofproto_classes[i]; | |
415 | } | |
416 | n_ofproto_classes--; | |
417 | return 0; | |
418 | } | |
419 | } | |
420 | VLOG_WARN("attempted to unregister an ofproto class that is not " | |
421 | "registered"); | |
422 | return EAFNOSUPPORT; | |
423 | } | |
4a4cdb3b | 424 | |
f79e673f BP |
425 | /* Clears 'types' and enumerates all registered ofproto types into it. The |
426 | * caller must first initialize the sset. */ | |
427 | void | |
428 | ofproto_enumerate_types(struct sset *types) | |
429 | { | |
abe529af | 430 | size_t i; |
064af421 | 431 | |
c799c306 | 432 | sset_clear(types); |
abe529af BP |
433 | for (i = 0; i < n_ofproto_classes; i++) { |
434 | ofproto_classes[i]->enumerate_types(types); | |
435 | } | |
f79e673f | 436 | } |
064af421 | 437 | |
f79e673f BP |
438 | /* Returns the fully spelled out name for the given ofproto 'type'. |
439 | * | |
440 | * Normalized type string can be compared with strcmp(). Unnormalized type | |
441 | * string might be the same even if they have different spellings. */ | |
442 | const char * | |
443 | ofproto_normalize_type(const char *type) | |
444 | { | |
abe529af | 445 | return type && type[0] ? type : "system"; |
f79e673f | 446 | } |
064af421 | 447 | |
f79e673f BP |
448 | /* Clears 'names' and enumerates the names of all known created ofprotos with |
449 | * the given 'type'. The caller must first initialize the sset. Returns 0 if | |
450 | * successful, otherwise a positive errno value. | |
451 | * | |
452 | * Some kinds of datapaths might not be practically enumerable. This is not | |
453 | * considered an error. */ | |
454 | int | |
455 | ofproto_enumerate_names(const char *type, struct sset *names) | |
456 | { | |
abe529af BP |
457 | const struct ofproto_class *class = ofproto_class_find__(type); |
458 | return class ? class->enumerate_names(type, names) : EAFNOSUPPORT; | |
239ad7d1 | 459 | } |
7aa697dd | 460 | |
064af421 | 461 | int |
abe529af | 462 | ofproto_create(const char *datapath_name, const char *datapath_type, |
064af421 BP |
463 | struct ofproto **ofprotop) |
464 | { | |
abe529af BP |
465 | const struct ofproto_class *class; |
466 | struct ofproto *ofproto; | |
064af421 | 467 | int error; |
c2f0373a | 468 | int i; |
064af421 BP |
469 | |
470 | *ofprotop = NULL; | |
471 | ||
7aa697dd BP |
472 | ofproto_unixctl_init(); |
473 | ||
abe529af BP |
474 | datapath_type = ofproto_normalize_type(datapath_type); |
475 | class = ofproto_class_find__(datapath_type); | |
476 | if (!class) { | |
477 | VLOG_WARN("could not create datapath %s of unknown type %s", | |
478 | datapath_name, datapath_type); | |
479 | return EAFNOSUPPORT; | |
064af421 BP |
480 | } |
481 | ||
abe529af BP |
482 | ofproto = class->alloc(); |
483 | if (!ofproto) { | |
484 | VLOG_ERR("failed to allocate datapath %s of type %s", | |
485 | datapath_name, datapath_type); | |
486 | return ENOMEM; | |
487 | } | |
488 | ||
489 | /* Initialize. */ | |
abe7b10f | 490 | ovs_mutex_lock(&ofproto_mutex); |
abe529af BP |
491 | memset(ofproto, 0, sizeof *ofproto); |
492 | ofproto->ofproto_class = class; | |
493 | ofproto->name = xstrdup(datapath_name); | |
494 | ofproto->type = xstrdup(datapath_type); | |
495 | hmap_insert(&all_ofprotos, &ofproto->hmap_node, | |
496 | hash_string(ofproto->name, 0)); | |
497 | ofproto->datapath_id = 0; | |
8402c74b | 498 | ofproto->forward_bpdu = false; |
abe529af | 499 | ofproto->fallback_dpid = pick_fallback_dpid(); |
061bfea4 BP |
500 | ofproto->mfr_desc = NULL; |
501 | ofproto->hw_desc = NULL; | |
502 | ofproto->sw_desc = NULL; | |
503 | ofproto->serial_desc = NULL; | |
504 | ofproto->dp_desc = NULL; | |
7257b535 | 505 | ofproto->frag_handling = OFPC_FRAG_NORMAL; |
abe529af | 506 | hmap_init(&ofproto->ports); |
fdcea803 | 507 | hmap_init(&ofproto->ofport_usage); |
abe529af | 508 | shash_init(&ofproto->port_by_name); |
e1b1d06a | 509 | simap_init(&ofproto->ofp_requests); |
430dbb14 | 510 | ofproto->max_ports = ofp_to_u16(OFPP_MAX); |
448c2fa8 | 511 | ofproto->eviction_group_timer = LLONG_MIN; |
6c1491fb BP |
512 | ofproto->tables = NULL; |
513 | ofproto->n_tables = 0; | |
98eaac36 | 514 | hindex_init(&ofproto->cookies); |
35f48b8b | 515 | hmap_init(&ofproto->learned_cookies); |
e503cc19 | 516 | list_init(&ofproto->expirable); |
abe529af | 517 | ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name); |
35412852 | 518 | guarded_list_init(&ofproto->rule_executes); |
52a90c29 BP |
519 | ofproto->vlan_bitmap = NULL; |
520 | ofproto->vlans_changed = false; | |
ada3428f | 521 | ofproto->min_mtu = INT_MAX; |
7395c052 NZ |
522 | ovs_rwlock_init(&ofproto->groups_rwlock); |
523 | hmap_init(&ofproto->groups); | |
abe7b10f | 524 | ovs_mutex_unlock(&ofproto_mutex); |
7cb279c2 SH |
525 | ofproto->ogf.capabilities = OFPGFC_CHAINING | OFPGFC_SELECT_LIVENESS | |
526 | OFPGFC_SELECT_WEIGHT; | |
08d1e234 BP |
527 | for (i = 0; i < 4; i++) { |
528 | ofproto->ogf.max_groups[i] = OFPG_MAX; | |
529 | ofproto->ogf.ofpacts[i] = (UINT64_C(1) << N_OFPACTS) - 1; | |
530 | } | |
abe529af | 531 | |
0f5f95a9 | 532 | error = ofproto->ofproto_class->construct(ofproto); |
19a87e36 | 533 | if (error) { |
abe529af | 534 | VLOG_ERR("failed to open datapath %s: %s", |
10a89ef0 | 535 | datapath_name, ovs_strerror(error)); |
abe529af | 536 | ofproto_destroy__(ofproto); |
19a87e36 BP |
537 | return error; |
538 | } | |
073e2a6f | 539 | |
c2f0373a | 540 | /* Check that hidden tables, if any, are at the end. */ |
cb22974d | 541 | ovs_assert(ofproto->n_tables); |
c2f0373a BP |
542 | for (i = 0; i + 1 < ofproto->n_tables; i++) { |
543 | enum oftable_flags flags = ofproto->tables[i].flags; | |
544 | enum oftable_flags next_flags = ofproto->tables[i + 1].flags; | |
545 | ||
cb22974d | 546 | ovs_assert(!(flags & OFTABLE_HIDDEN) || next_flags & OFTABLE_HIDDEN); |
c2f0373a | 547 | } |
19a87e36 | 548 | |
abe529af | 549 | ofproto->datapath_id = pick_datapath_id(ofproto); |
abe529af | 550 | init_ports(ofproto); |
7aa697dd | 551 | |
9cae45dc JR |
552 | /* Initialize meters table. */ |
553 | if (ofproto->ofproto_class->meter_get_features) { | |
554 | ofproto->ofproto_class->meter_get_features(ofproto, | |
555 | &ofproto->meter_features); | |
556 | } else { | |
557 | memset(&ofproto->meter_features, 0, sizeof ofproto->meter_features); | |
558 | } | |
559 | ofproto->meters = xzalloc((ofproto->meter_features.max_meters + 1) | |
560 | * sizeof(struct meter *)); | |
561 | ||
abe529af | 562 | *ofprotop = ofproto; |
064af421 BP |
563 | return 0; |
564 | } | |
565 | ||
91858960 BP |
566 | /* Must be called (only) by an ofproto implementation in its constructor |
567 | * function. See the large comment on 'construct' in struct ofproto_class for | |
568 | * details. */ | |
0f5f95a9 BP |
569 | void |
570 | ofproto_init_tables(struct ofproto *ofproto, int n_tables) | |
571 | { | |
572 | struct oftable *table; | |
573 | ||
cb22974d BP |
574 | ovs_assert(!ofproto->n_tables); |
575 | ovs_assert(n_tables >= 1 && n_tables <= 255); | |
0f5f95a9 BP |
576 | |
577 | ofproto->n_tables = n_tables; | |
578 | ofproto->tables = xmalloc(n_tables * sizeof *ofproto->tables); | |
579 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
580 | oftable_init(table); | |
581 | } | |
582 | } | |
583 | ||
91858960 BP |
584 | /* To be optionally called (only) by an ofproto implementation in its |
585 | * constructor function. See the large comment on 'construct' in struct | |
586 | * ofproto_class for details. | |
587 | * | |
588 | * Sets the maximum number of ports to 'max_ports'. The ofproto generic layer | |
589 | * will then ensure that actions passed into the ofproto implementation will | |
590 | * not refer to OpenFlow ports numbered 'max_ports' or higher. If this | |
591 | * function is not called, there will be no such restriction. | |
592 | * | |
593 | * Reserved ports numbered OFPP_MAX and higher are special and not subject to | |
594 | * the 'max_ports' restriction. */ | |
595 | void | |
430dbb14 | 596 | ofproto_init_max_ports(struct ofproto *ofproto, uint16_t max_ports) |
91858960 | 597 | { |
430dbb14 | 598 | ovs_assert(max_ports <= ofp_to_u16(OFPP_MAX)); |
91858960 BP |
599 | ofproto->max_ports = max_ports; |
600 | } | |
601 | ||
e825ace2 BP |
602 | uint64_t |
603 | ofproto_get_datapath_id(const struct ofproto *ofproto) | |
604 | { | |
605 | return ofproto->datapath_id; | |
606 | } | |
607 | ||
064af421 BP |
608 | void |
609 | ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id) | |
610 | { | |
611 | uint64_t old_dpid = p->datapath_id; | |
fa60c019 | 612 | p->datapath_id = datapath_id ? datapath_id : pick_datapath_id(p); |
064af421 | 613 | if (p->datapath_id != old_dpid) { |
76ce9432 BP |
614 | /* Force all active connections to reconnect, since there is no way to |
615 | * notify a controller that the datapath ID has changed. */ | |
fa05809b | 616 | ofproto_reconnect_controllers(p); |
064af421 BP |
617 | } |
618 | } | |
619 | ||
76ce9432 BP |
620 | void |
621 | ofproto_set_controllers(struct ofproto *p, | |
622 | const struct ofproto_controller *controllers, | |
1d9ffc17 | 623 | size_t n_controllers, uint32_t allowed_versions) |
76ce9432 | 624 | { |
1d9ffc17 SH |
625 | connmgr_set_controllers(p->connmgr, controllers, n_controllers, |
626 | allowed_versions); | |
064af421 BP |
627 | } |
628 | ||
31681a5d JP |
629 | void |
630 | ofproto_set_fail_mode(struct ofproto *p, enum ofproto_fail_mode fail_mode) | |
631 | { | |
19a87e36 | 632 | connmgr_set_fail_mode(p->connmgr, fail_mode); |
31681a5d JP |
633 | } |
634 | ||
fa05809b BP |
635 | /* Drops the connections between 'ofproto' and all of its controllers, forcing |
636 | * them to reconnect. */ | |
637 | void | |
638 | ofproto_reconnect_controllers(struct ofproto *ofproto) | |
639 | { | |
19a87e36 | 640 | connmgr_reconnect(ofproto->connmgr); |
917e50e1 BP |
641 | } |
642 | ||
643 | /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s | |
644 | * in-band control should guarantee access, in the same way that in-band | |
645 | * control guarantees access to OpenFlow controllers. */ | |
646 | void | |
647 | ofproto_set_extra_in_band_remotes(struct ofproto *ofproto, | |
648 | const struct sockaddr_in *extras, size_t n) | |
649 | { | |
19a87e36 | 650 | connmgr_set_extra_in_band_remotes(ofproto->connmgr, extras, n); |
917e50e1 BP |
651 | } |
652 | ||
b1da6250 BP |
653 | /* Sets the OpenFlow queue used by flows set up by in-band control on |
654 | * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control | |
655 | * flows will use the default queue. */ | |
656 | void | |
657 | ofproto_set_in_band_queue(struct ofproto *ofproto, int queue_id) | |
658 | { | |
19a87e36 | 659 | connmgr_set_in_band_queue(ofproto->connmgr, queue_id); |
b1da6250 BP |
660 | } |
661 | ||
084f5290 SH |
662 | /* Sets the number of flows at which eviction from the kernel flow table |
663 | * will occur. */ | |
664 | void | |
e79a6c83 | 665 | ofproto_set_flow_limit(unsigned limit) |
084f5290 | 666 | { |
e79a6c83 | 667 | ofproto_flow_limit = limit; |
084f5290 SH |
668 | } |
669 | ||
72310b04 JS |
670 | /* Sets the maximum idle time for flows in the datapath before they are |
671 | * expired. */ | |
672 | void | |
673 | ofproto_set_max_idle(unsigned max_idle) | |
674 | { | |
675 | ofproto_max_idle = max_idle; | |
676 | } | |
677 | ||
b53055f4 | 678 | /* If forward_bpdu is true, the NORMAL action will forward frames with |
8402c74b SS |
679 | * reserved (e.g. STP) destination Ethernet addresses. if forward_bpdu is false, |
680 | * the NORMAL action will drop these frames. */ | |
681 | void | |
682 | ofproto_set_forward_bpdu(struct ofproto *ofproto, bool forward_bpdu) | |
683 | { | |
684 | bool old_val = ofproto->forward_bpdu; | |
685 | ofproto->forward_bpdu = forward_bpdu; | |
686 | if (old_val != ofproto->forward_bpdu) { | |
687 | if (ofproto->ofproto_class->forward_bpdu_changed) { | |
688 | ofproto->ofproto_class->forward_bpdu_changed(ofproto); | |
689 | } | |
b53055f4 | 690 | } |
8402c74b SS |
691 | } |
692 | ||
e764773c | 693 | /* Sets the MAC aging timeout for the OFPP_NORMAL action on 'ofproto' to |
c4069512 BP |
694 | * 'idle_time', in seconds, and the maximum number of MAC table entries to |
695 | * 'max_entries'. */ | |
e764773c | 696 | void |
c4069512 BP |
697 | ofproto_set_mac_table_config(struct ofproto *ofproto, unsigned idle_time, |
698 | size_t max_entries) | |
e764773c | 699 | { |
c4069512 BP |
700 | if (ofproto->ofproto_class->set_mac_table_config) { |
701 | ofproto->ofproto_class->set_mac_table_config(ofproto, idle_time, | |
702 | max_entries); | |
e764773c BP |
703 | } |
704 | } | |
705 | ||
7c38d0a5 FL |
706 | /* Multicast snooping configuration. */ |
707 | ||
708 | /* Configures multicast snooping on 'ofproto' using the settings | |
709 | * defined in 's'. If 's' is NULL, disables multicast snooping. | |
710 | * | |
711 | * Returns 0 if successful, otherwise a positive errno value. */ | |
712 | int | |
713 | ofproto_set_mcast_snooping(struct ofproto *ofproto, | |
714 | const struct ofproto_mcast_snooping_settings *s) | |
715 | { | |
716 | return (ofproto->ofproto_class->set_mcast_snooping | |
717 | ? ofproto->ofproto_class->set_mcast_snooping(ofproto, s) | |
718 | : EOPNOTSUPP); | |
719 | } | |
720 | ||
721 | /* Configures multicast snooping flood setting on 'ofp_port' of 'ofproto'. | |
722 | * | |
723 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
724 | int | |
725 | ofproto_port_set_mcast_snooping(struct ofproto *ofproto, void *aux, bool flood) | |
726 | { | |
727 | return (ofproto->ofproto_class->set_mcast_snooping_port | |
728 | ? ofproto->ofproto_class->set_mcast_snooping_port(ofproto, aux, | |
729 | flood) | |
730 | : EOPNOTSUPP); | |
731 | } | |
732 | ||
448a4b2f | 733 | void |
30ea0da7 | 734 | ofproto_set_threads(int n_handlers_, int n_revalidators_) |
448a4b2f | 735 | { |
e79a6c83 EJ |
736 | int threads = MAX(count_cpu_cores(), 2); |
737 | ||
30ea0da7 GS |
738 | n_revalidators = MAX(n_revalidators_, 0); |
739 | n_handlers = MAX(n_handlers_, 0); | |
e79a6c83 EJ |
740 | |
741 | if (!n_revalidators) { | |
742 | n_revalidators = n_handlers | |
743 | ? MAX(threads - (int) n_handlers, 1) | |
744 | : threads / 4 + 1; | |
745 | } | |
746 | ||
747 | if (!n_handlers) { | |
748 | n_handlers = MAX(threads - (int) n_revalidators, 1); | |
749 | } | |
448a4b2f AW |
750 | } |
751 | ||
8b6ff729 BP |
752 | void |
753 | ofproto_set_dp_desc(struct ofproto *p, const char *dp_desc) | |
754 | { | |
755 | free(p->dp_desc); | |
756 | p->dp_desc = dp_desc ? xstrdup(dp_desc) : NULL; | |
757 | } | |
758 | ||
064af421 | 759 | int |
81e2083f | 760 | ofproto_set_snoops(struct ofproto *ofproto, const struct sset *snoops) |
064af421 | 761 | { |
19a87e36 | 762 | return connmgr_set_snoops(ofproto->connmgr, snoops); |
064af421 BP |
763 | } |
764 | ||
765 | int | |
0193b2af JG |
766 | ofproto_set_netflow(struct ofproto *ofproto, |
767 | const struct netflow_options *nf_options) | |
064af421 | 768 | { |
abe529af BP |
769 | if (nf_options && sset_is_empty(&nf_options->collectors)) { |
770 | nf_options = NULL; | |
771 | } | |
772 | ||
773 | if (ofproto->ofproto_class->set_netflow) { | |
774 | return ofproto->ofproto_class->set_netflow(ofproto, nf_options); | |
064af421 | 775 | } else { |
abe529af | 776 | return nf_options ? EOPNOTSUPP : 0; |
064af421 BP |
777 | } |
778 | } | |
779 | ||
abe529af | 780 | int |
72b06300 BP |
781 | ofproto_set_sflow(struct ofproto *ofproto, |
782 | const struct ofproto_sflow_options *oso) | |
783 | { | |
abe529af BP |
784 | if (oso && sset_is_empty(&oso->targets)) { |
785 | oso = NULL; | |
786 | } | |
72b06300 | 787 | |
abe529af BP |
788 | if (ofproto->ofproto_class->set_sflow) { |
789 | return ofproto->ofproto_class->set_sflow(ofproto, oso); | |
72b06300 | 790 | } else { |
abe529af | 791 | return oso ? EOPNOTSUPP : 0; |
72b06300 BP |
792 | } |
793 | } | |
29089a54 RL |
794 | |
795 | int | |
796 | ofproto_set_ipfix(struct ofproto *ofproto, | |
797 | const struct ofproto_ipfix_bridge_exporter_options *bo, | |
798 | const struct ofproto_ipfix_flow_exporter_options *fo, | |
799 | size_t n_fo) | |
800 | { | |
801 | if (ofproto->ofproto_class->set_ipfix) { | |
802 | return ofproto->ofproto_class->set_ipfix(ofproto, bo, fo, n_fo); | |
803 | } else { | |
804 | return (bo || fo) ? EOPNOTSUPP : 0; | |
805 | } | |
806 | } | |
40358701 GS |
807 | |
808 | void | |
809 | ofproto_set_flow_restore_wait(bool flow_restore_wait_db) | |
810 | { | |
811 | flow_restore_wait = flow_restore_wait_db; | |
812 | } | |
813 | ||
814 | bool | |
815 | ofproto_get_flow_restore_wait(void) | |
816 | { | |
817 | return flow_restore_wait; | |
818 | } | |
819 | ||
e7934396 | 820 | \f |
21f7563c JP |
821 | /* Spanning Tree Protocol (STP) configuration. */ |
822 | ||
823 | /* Configures STP on 'ofproto' using the settings defined in 's'. If | |
824 | * 's' is NULL, disables STP. | |
825 | * | |
826 | * Returns 0 if successful, otherwise a positive errno value. */ | |
827 | int | |
828 | ofproto_set_stp(struct ofproto *ofproto, | |
829 | const struct ofproto_stp_settings *s) | |
830 | { | |
831 | return (ofproto->ofproto_class->set_stp | |
832 | ? ofproto->ofproto_class->set_stp(ofproto, s) | |
833 | : EOPNOTSUPP); | |
834 | } | |
835 | ||
836 | /* Retrieves STP status of 'ofproto' and stores it in 's'. If the | |
837 | * 'enabled' member of 's' is false, then the other members are not | |
838 | * meaningful. | |
839 | * | |
840 | * Returns 0 if successful, otherwise a positive errno value. */ | |
841 | int | |
842 | ofproto_get_stp_status(struct ofproto *ofproto, | |
843 | struct ofproto_stp_status *s) | |
844 | { | |
845 | return (ofproto->ofproto_class->get_stp_status | |
846 | ? ofproto->ofproto_class->get_stp_status(ofproto, s) | |
847 | : EOPNOTSUPP); | |
848 | } | |
849 | ||
850 | /* Configures STP on 'ofp_port' of 'ofproto' using the settings defined | |
851 | * in 's'. The caller is responsible for assigning STP port numbers | |
852 | * (using the 'port_num' member in the range of 1 through 255, inclusive) | |
853 | * and ensuring there are no duplicates. If the 's' is NULL, then STP | |
854 | * is disabled on the port. | |
855 | * | |
856 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
857 | int | |
4e022ec0 | 858 | ofproto_port_set_stp(struct ofproto *ofproto, ofp_port_t ofp_port, |
21f7563c JP |
859 | const struct ofproto_port_stp_settings *s) |
860 | { | |
861 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
862 | if (!ofport) { | |
863 | VLOG_WARN("%s: cannot configure STP on nonexistent port %"PRIu16, | |
864 | ofproto->name, ofp_port); | |
865 | return ENODEV; | |
866 | } | |
867 | ||
868 | return (ofproto->ofproto_class->set_stp_port | |
869 | ? ofproto->ofproto_class->set_stp_port(ofport, s) | |
870 | : EOPNOTSUPP); | |
871 | } | |
872 | ||
873 | /* Retrieves STP port status of 'ofp_port' on 'ofproto' and stores it in | |
874 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
875 | * are not meaningful. | |
876 | * | |
877 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
878 | int | |
4e022ec0 | 879 | ofproto_port_get_stp_status(struct ofproto *ofproto, ofp_port_t ofp_port, |
21f7563c JP |
880 | struct ofproto_port_stp_status *s) |
881 | { | |
882 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
883 | if (!ofport) { | |
b0a5c43b JP |
884 | VLOG_WARN_RL(&rl, "%s: cannot get STP status on nonexistent " |
885 | "port %"PRIu16, ofproto->name, ofp_port); | |
21f7563c JP |
886 | return ENODEV; |
887 | } | |
888 | ||
889 | return (ofproto->ofproto_class->get_stp_port_status | |
890 | ? ofproto->ofproto_class->get_stp_port_status(ofport, s) | |
891 | : EOPNOTSUPP); | |
892 | } | |
fd28ce3a JS |
893 | |
894 | /* Retrieves STP port statistics of 'ofp_port' on 'ofproto' and stores it in | |
895 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
896 | * are not meaningful. | |
897 | * | |
898 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
899 | int | |
900 | ofproto_port_get_stp_stats(struct ofproto *ofproto, ofp_port_t ofp_port, | |
901 | struct ofproto_port_stp_stats *s) | |
902 | { | |
903 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
904 | if (!ofport) { | |
905 | VLOG_WARN_RL(&rl, "%s: cannot get STP stats on nonexistent " | |
906 | "port %"PRIu16, ofproto->name, ofp_port); | |
907 | return ENODEV; | |
908 | } | |
909 | ||
910 | return (ofproto->ofproto_class->get_stp_port_stats | |
911 | ? ofproto->ofproto_class->get_stp_port_stats(ofport, s) | |
912 | : EOPNOTSUPP); | |
913 | } | |
9efd308e DV |
914 | |
915 | /* Rapid Spanning Tree Protocol (RSTP) configuration. */ | |
916 | ||
917 | /* Configures RSTP on 'ofproto' using the settings defined in 's'. If | |
918 | * 's' is NULL, disables RSTP. | |
919 | * | |
920 | * Returns 0 if successful, otherwise a positive errno value. */ | |
921 | int | |
922 | ofproto_set_rstp(struct ofproto *ofproto, | |
923 | const struct ofproto_rstp_settings *s) | |
924 | { | |
925 | if (!ofproto->ofproto_class->set_rstp) { | |
926 | return EOPNOTSUPP; | |
927 | } | |
928 | ofproto->ofproto_class->set_rstp(ofproto, s); | |
929 | return 0; | |
930 | } | |
931 | ||
932 | /* Retrieves RSTP status of 'ofproto' and stores it in 's'. If the | |
933 | * 'enabled' member of 's' is false, then the other members are not | |
934 | * meaningful. | |
935 | * | |
936 | * Returns 0 if successful, otherwise a positive errno value. */ | |
937 | int | |
938 | ofproto_get_rstp_status(struct ofproto *ofproto, | |
939 | struct ofproto_rstp_status *s) | |
940 | { | |
941 | if (!ofproto->ofproto_class->get_rstp_status) { | |
942 | return EOPNOTSUPP; | |
943 | } | |
944 | ofproto->ofproto_class->get_rstp_status(ofproto, s); | |
945 | return 0; | |
946 | } | |
947 | ||
948 | /* Configures RSTP on 'ofp_port' of 'ofproto' using the settings defined | |
949 | * in 's'. The caller is responsible for assigning RSTP port numbers | |
950 | * (using the 'port_num' member in the range of 1 through 255, inclusive) | |
951 | * and ensuring there are no duplicates. If the 's' is NULL, then RSTP | |
952 | * is disabled on the port. | |
953 | * | |
954 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
955 | int | |
956 | ofproto_port_set_rstp(struct ofproto *ofproto, ofp_port_t ofp_port, | |
957 | const struct ofproto_port_rstp_settings *s) | |
958 | { | |
959 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
960 | if (!ofport) { | |
961 | VLOG_WARN("%s: cannot configure RSTP on nonexistent port %"PRIu16, | |
962 | ofproto->name, ofp_port); | |
963 | return ENODEV; | |
964 | } | |
965 | ||
966 | if (!ofproto->ofproto_class->set_rstp_port) { | |
967 | return EOPNOTSUPP; | |
968 | } | |
969 | ofproto->ofproto_class->set_rstp_port(ofport, s); | |
970 | return 0; | |
971 | } | |
972 | ||
973 | /* Retrieves RSTP port status of 'ofp_port' on 'ofproto' and stores it in | |
974 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
975 | * are not meaningful. | |
976 | * | |
977 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
978 | int | |
979 | ofproto_port_get_rstp_status(struct ofproto *ofproto, ofp_port_t ofp_port, | |
980 | struct ofproto_port_rstp_status *s) | |
981 | { | |
982 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
983 | if (!ofport) { | |
984 | VLOG_WARN_RL(&rl, "%s: cannot get RSTP status on nonexistent " | |
985 | "port %"PRIu16, ofproto->name, ofp_port); | |
986 | return ENODEV; | |
987 | } | |
988 | ||
989 | if (!ofproto->ofproto_class->get_rstp_port_status) { | |
990 | return EOPNOTSUPP; | |
991 | } | |
992 | ofproto->ofproto_class->get_rstp_port_status(ofport, s); | |
993 | return 0; | |
994 | } | |
21f7563c | 995 | \f |
8b36f51e EJ |
996 | /* Queue DSCP configuration. */ |
997 | ||
998 | /* Registers meta-data associated with the 'n_qdscp' Qualities of Service | |
999 | * 'queues' attached to 'ofport'. This data is not intended to be sufficient | |
1000 | * to implement QoS. Instead, it is used to implement features which require | |
1001 | * knowledge of what queues exist on a port, and some basic information about | |
1002 | * them. | |
1003 | * | |
1004 | * Returns 0 if successful, otherwise a positive errno value. */ | |
1005 | int | |
4e022ec0 | 1006 | ofproto_port_set_queues(struct ofproto *ofproto, ofp_port_t ofp_port, |
8b36f51e EJ |
1007 | const struct ofproto_port_queue *queues, |
1008 | size_t n_queues) | |
1009 | { | |
1010 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1011 | ||
1012 | if (!ofport) { | |
1013 | VLOG_WARN("%s: cannot set queues on nonexistent port %"PRIu16, | |
1014 | ofproto->name, ofp_port); | |
1015 | return ENODEV; | |
1016 | } | |
1017 | ||
1018 | return (ofproto->ofproto_class->set_queues | |
1019 | ? ofproto->ofproto_class->set_queues(ofport, queues, n_queues) | |
1020 | : EOPNOTSUPP); | |
1021 | } | |
1022 | \f | |
e7934396 BP |
1023 | /* Connectivity Fault Management configuration. */ |
1024 | ||
892815f5 | 1025 | /* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */ |
e7934396 | 1026 | void |
4e022ec0 | 1027 | ofproto_port_clear_cfm(struct ofproto *ofproto, ofp_port_t ofp_port) |
e7934396 | 1028 | { |
abe529af BP |
1029 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1030 | if (ofport && ofproto->ofproto_class->set_cfm) { | |
a5610457 | 1031 | ofproto->ofproto_class->set_cfm(ofport, NULL); |
e7934396 BP |
1032 | } |
1033 | } | |
72b06300 | 1034 | |
892815f5 | 1035 | /* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes |
93b8df38 EJ |
1036 | * basic configuration from the configuration members in 'cfm', and the remote |
1037 | * maintenance point ID from remote_mpid. Ignores the statistics members of | |
1038 | * 'cfm'. | |
e7934396 | 1039 | * |
892815f5 | 1040 | * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */ |
e7934396 | 1041 | void |
4e022ec0 | 1042 | ofproto_port_set_cfm(struct ofproto *ofproto, ofp_port_t ofp_port, |
a5610457 | 1043 | const struct cfm_settings *s) |
e7934396 BP |
1044 | { |
1045 | struct ofport *ofport; | |
abe529af | 1046 | int error; |
e7934396 | 1047 | |
abe529af | 1048 | ofport = ofproto_get_port(ofproto, ofp_port); |
e7934396 | 1049 | if (!ofport) { |
892815f5 BP |
1050 | VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16, |
1051 | ofproto->name, ofp_port); | |
e7934396 BP |
1052 | return; |
1053 | } | |
1054 | ||
93b8df38 EJ |
1055 | /* XXX: For configuration simplicity, we only support one remote_mpid |
1056 | * outside of the CFM module. It's not clear if this is the correct long | |
1057 | * term solution or not. */ | |
abe529af | 1058 | error = (ofproto->ofproto_class->set_cfm |
a5610457 | 1059 | ? ofproto->ofproto_class->set_cfm(ofport, s) |
abe529af BP |
1060 | : EOPNOTSUPP); |
1061 | if (error) { | |
1062 | VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed (%s)", | |
1063 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
10a89ef0 | 1064 | ovs_strerror(error)); |
e7934396 | 1065 | } |
e7934396 | 1066 | } |
e7934396 | 1067 | |
ccc09689 EJ |
1068 | /* Configures BFD on 'ofp_port' in 'ofproto'. This function has no effect if |
1069 | * 'ofproto' does not have a port 'ofp_port'. */ | |
1070 | void | |
4e022ec0 | 1071 | ofproto_port_set_bfd(struct ofproto *ofproto, ofp_port_t ofp_port, |
ccc09689 EJ |
1072 | const struct smap *cfg) |
1073 | { | |
1074 | struct ofport *ofport; | |
1075 | int error; | |
1076 | ||
1077 | ofport = ofproto_get_port(ofproto, ofp_port); | |
1078 | if (!ofport) { | |
1079 | VLOG_WARN("%s: cannot configure bfd on nonexistent port %"PRIu16, | |
1080 | ofproto->name, ofp_port); | |
e8999bdc | 1081 | return; |
ccc09689 EJ |
1082 | } |
1083 | ||
1084 | error = (ofproto->ofproto_class->set_bfd | |
1085 | ? ofproto->ofproto_class->set_bfd(ofport, cfg) | |
1086 | : EOPNOTSUPP); | |
1087 | if (error) { | |
1088 | VLOG_WARN("%s: bfd configuration on port %"PRIu16" (%s) failed (%s)", | |
1089 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
10a89ef0 | 1090 | ovs_strerror(error)); |
ccc09689 EJ |
1091 | } |
1092 | } | |
1093 | ||
8f5514fe AW |
1094 | /* Checks the status change of BFD on 'ofport'. |
1095 | * | |
1096 | * Returns true if 'ofproto_class' does not support 'bfd_status_changed'. */ | |
1097 | bool | |
1098 | ofproto_port_bfd_status_changed(struct ofproto *ofproto, ofp_port_t ofp_port) | |
1099 | { | |
1100 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1101 | return (ofport && ofproto->ofproto_class->bfd_status_changed | |
1102 | ? ofproto->ofproto_class->bfd_status_changed(ofport) | |
1103 | : true); | |
1104 | } | |
1105 | ||
88bf179a | 1106 | /* Populates 'status' with the status of BFD on 'ofport'. Returns 0 on |
8f5514fe AW |
1107 | * success. Returns a positive errno otherwise. Has no effect if 'ofp_port' |
1108 | * is not an OpenFlow port in 'ofproto'. | |
88bf179a AW |
1109 | * |
1110 | * The caller must provide and own '*status'. */ | |
ccc09689 | 1111 | int |
4e022ec0 | 1112 | ofproto_port_get_bfd_status(struct ofproto *ofproto, ofp_port_t ofp_port, |
ccc09689 EJ |
1113 | struct smap *status) |
1114 | { | |
1115 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1116 | return (ofport && ofproto->ofproto_class->get_bfd_status | |
1117 | ? ofproto->ofproto_class->get_bfd_status(ofport, status) | |
1118 | : EOPNOTSUPP); | |
1119 | } | |
1120 | ||
fa066f01 BP |
1121 | /* Checks the status of LACP negotiation for 'ofp_port' within ofproto. |
1122 | * Returns 1 if LACP partner information for 'ofp_port' is up-to-date, | |
1123 | * 0 if LACP partner information is not current (generally indicating a | |
1124 | * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */ | |
1125 | int | |
4e022ec0 | 1126 | ofproto_port_is_lacp_current(struct ofproto *ofproto, ofp_port_t ofp_port) |
fa066f01 | 1127 | { |
abe529af BP |
1128 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1129 | return (ofport && ofproto->ofproto_class->port_is_lacp_current | |
1130 | ? ofproto->ofproto_class->port_is_lacp_current(ofport) | |
fa066f01 | 1131 | : -1); |
e7934396 | 1132 | } |
e7934396 | 1133 | \f |
fa066f01 | 1134 | /* Bundles. */ |
e7934396 | 1135 | |
abe529af BP |
1136 | /* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'. |
1137 | * A bundle is the same concept as a Port in OVSDB, that is, it consists of one | |
1138 | * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN | |
1139 | * configuration plus, if there is more than one slave, a bonding | |
1140 | * configuration. | |
1141 | * | |
1142 | * If 'aux' is already registered then this function updates its configuration | |
1143 | * to 's'. Otherwise, this function registers a new bundle. | |
1144 | * | |
1145 | * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL | |
1146 | * port. */ | |
1147 | int | |
1148 | ofproto_bundle_register(struct ofproto *ofproto, void *aux, | |
1149 | const struct ofproto_bundle_settings *s) | |
fa066f01 | 1150 | { |
abe529af BP |
1151 | return (ofproto->ofproto_class->bundle_set |
1152 | ? ofproto->ofproto_class->bundle_set(ofproto, aux, s) | |
1153 | : EOPNOTSUPP); | |
fa066f01 BP |
1154 | } |
1155 | ||
abe529af BP |
1156 | /* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'. |
1157 | * If no such bundle has been registered, this has no effect. */ | |
1158 | int | |
1159 | ofproto_bundle_unregister(struct ofproto *ofproto, void *aux) | |
e7934396 | 1160 | { |
abe529af | 1161 | return ofproto_bundle_register(ofproto, aux, NULL); |
e7934396 | 1162 | } |
fa066f01 | 1163 | |
e7934396 | 1164 | \f |
abe529af BP |
1165 | /* Registers a mirror associated with client data pointer 'aux' in 'ofproto'. |
1166 | * If 'aux' is already registered then this function updates its configuration | |
c06bba01 | 1167 | * to 's'. Otherwise, this function registers a new mirror. */ |
abe529af BP |
1168 | int |
1169 | ofproto_mirror_register(struct ofproto *ofproto, void *aux, | |
1170 | const struct ofproto_mirror_settings *s) | |
064af421 | 1171 | { |
abe529af BP |
1172 | return (ofproto->ofproto_class->mirror_set |
1173 | ? ofproto->ofproto_class->mirror_set(ofproto, aux, s) | |
1174 | : EOPNOTSUPP); | |
064af421 BP |
1175 | } |
1176 | ||
abe529af BP |
1177 | /* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'. |
1178 | * If no mirror has been registered, this has no effect. */ | |
1179 | int | |
1180 | ofproto_mirror_unregister(struct ofproto *ofproto, void *aux) | |
064af421 | 1181 | { |
abe529af | 1182 | return ofproto_mirror_register(ofproto, aux, NULL); |
064af421 BP |
1183 | } |
1184 | ||
9d24de3b JP |
1185 | /* Retrieves statistics from mirror associated with client data pointer |
1186 | * 'aux' in 'ofproto'. Stores packet and byte counts in 'packets' and | |
1187 | * 'bytes', respectively. If a particular counters is not supported, | |
1188 | * the appropriate argument is set to UINT64_MAX. */ | |
1189 | int | |
1190 | ofproto_mirror_get_stats(struct ofproto *ofproto, void *aux, | |
1191 | uint64_t *packets, uint64_t *bytes) | |
1192 | { | |
1193 | if (!ofproto->ofproto_class->mirror_get_stats) { | |
1194 | *packets = *bytes = UINT64_MAX; | |
1195 | return EOPNOTSUPP; | |
1196 | } | |
1197 | ||
1198 | return ofproto->ofproto_class->mirror_get_stats(ofproto, aux, | |
1199 | packets, bytes); | |
1200 | } | |
1201 | ||
abe529af BP |
1202 | /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on |
1203 | * which all packets are flooded, instead of using MAC learning. If | |
1204 | * 'flood_vlans' is NULL, then MAC learning applies to all VLANs. | |
1205 | * | |
1206 | * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL | |
1207 | * port. */ | |
1208 | int | |
1209 | ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans) | |
abdfe474 | 1210 | { |
abe529af BP |
1211 | return (ofproto->ofproto_class->set_flood_vlans |
1212 | ? ofproto->ofproto_class->set_flood_vlans(ofproto, flood_vlans) | |
1213 | : EOPNOTSUPP); | |
abdfe474 JP |
1214 | } |
1215 | ||
abe529af BP |
1216 | /* Returns true if 'aux' is a registered bundle that is currently in use as the |
1217 | * output for a mirror. */ | |
1218 | bool | |
b4affc74 | 1219 | ofproto_is_mirror_output_bundle(const struct ofproto *ofproto, void *aux) |
abe529af BP |
1220 | { |
1221 | return (ofproto->ofproto_class->is_mirror_output_bundle | |
1222 | ? ofproto->ofproto_class->is_mirror_output_bundle(ofproto, aux) | |
1223 | : false); | |
1224 | } | |
1225 | \f | |
254750ce BP |
1226 | /* Configuration of OpenFlow tables. */ |
1227 | ||
1228 | /* Returns the number of OpenFlow tables in 'ofproto'. */ | |
1229 | int | |
1230 | ofproto_get_n_tables(const struct ofproto *ofproto) | |
1231 | { | |
1232 | return ofproto->n_tables; | |
1233 | } | |
1234 | ||
adcf00ba AZ |
1235 | /* Returns the number of Controller visible OpenFlow tables |
1236 | * in 'ofproto'. This number will exclude Hidden tables. | |
1237 | * This funtion's return value should be less or equal to that of | |
1238 | * ofproto_get_n_tables() . */ | |
1239 | uint8_t | |
1240 | ofproto_get_n_visible_tables(const struct ofproto *ofproto) | |
1241 | { | |
1242 | uint8_t n = ofproto->n_tables; | |
1243 | ||
1244 | /* Count only non-hidden tables in the number of tables. (Hidden tables, | |
1245 | * if present, are always at the end.) */ | |
1246 | while(n && (ofproto->tables[n - 1].flags & OFTABLE_HIDDEN)) { | |
1247 | n--; | |
1248 | } | |
1249 | ||
1250 | return n; | |
1251 | } | |
1252 | ||
254750ce BP |
1253 | /* Configures the OpenFlow table in 'ofproto' with id 'table_id' with the |
1254 | * settings from 's'. 'table_id' must be in the range 0 through the number of | |
1255 | * OpenFlow tables in 'ofproto' minus 1, inclusive. | |
1256 | * | |
1257 | * For read-only tables, only the name may be configured. */ | |
1258 | void | |
1259 | ofproto_configure_table(struct ofproto *ofproto, int table_id, | |
1260 | const struct ofproto_table_settings *s) | |
1261 | { | |
1262 | struct oftable *table; | |
1263 | ||
cb22974d | 1264 | ovs_assert(table_id >= 0 && table_id < ofproto->n_tables); |
254750ce BP |
1265 | table = &ofproto->tables[table_id]; |
1266 | ||
1267 | oftable_set_name(table, s->name); | |
1268 | ||
1269 | if (table->flags & OFTABLE_READONLY) { | |
1270 | return; | |
1271 | } | |
1272 | ||
1273 | if (s->groups) { | |
1274 | oftable_enable_eviction(table, s->groups, s->n_groups); | |
1275 | } else { | |
1276 | oftable_disable_eviction(table); | |
1277 | } | |
1278 | ||
1279 | table->max_flows = s->max_flows; | |
afae68b1 | 1280 | |
f358a2cb JR |
1281 | if (classifier_set_prefix_fields(&table->cls, |
1282 | s->prefix_fields, s->n_prefix_fields)) { | |
1283 | /* XXX: Trigger revalidation. */ | |
1284 | } | |
834fe5cb BP |
1285 | |
1286 | ovs_mutex_lock(&ofproto_mutex); | |
1287 | evict_rules_from_table(table, 0); | |
1288 | ovs_mutex_unlock(&ofproto_mutex); | |
254750ce BP |
1289 | } |
1290 | \f | |
81e2083f BP |
1291 | bool |
1292 | ofproto_has_snoops(const struct ofproto *ofproto) | |
1293 | { | |
1294 | return connmgr_has_snoops(ofproto->connmgr); | |
1295 | } | |
1296 | ||
064af421 | 1297 | void |
81e2083f | 1298 | ofproto_get_snoops(const struct ofproto *ofproto, struct sset *snoops) |
064af421 | 1299 | { |
19a87e36 | 1300 | connmgr_get_snoops(ofproto->connmgr, snoops); |
064af421 BP |
1301 | } |
1302 | ||
15aaf599 | 1303 | static void |
b20f4073 | 1304 | ofproto_rule_delete__(struct rule *rule, uint8_t reason) |
15aaf599 BP |
1305 | OVS_REQUIRES(ofproto_mutex) |
1306 | { | |
9ca4a86f | 1307 | struct rule_collection rules; |
15aaf599 | 1308 | |
9ca4a86f BP |
1309 | rules.rules = rules.stub; |
1310 | rules.n = 1; | |
1311 | rules.stub[0] = rule; | |
1312 | delete_flows__(&rules, reason, NULL); | |
15aaf599 BP |
1313 | } |
1314 | ||
a73fcd71 | 1315 | /* Deletes 'rule' from 'ofproto'. |
8037acb4 | 1316 | * |
b74cb5d8 BP |
1317 | * Within an ofproto implementation, this function allows an ofproto |
1318 | * implementation to destroy any rules that remain when its ->destruct() | |
1319 | * function is called. This function is not suitable for use elsewhere in an | |
1320 | * ofproto implementation. | |
1321 | * | |
b74cb5d8 | 1322 | * This function implements steps 4.4 and 4.5 in the section titled "Rule Life |
8b81d1ef | 1323 | * Cycle" in ofproto-provider.h. */ |
b74cb5d8 | 1324 | void |
8b81d1ef | 1325 | ofproto_rule_delete(struct ofproto *ofproto, struct rule *rule) |
15aaf599 | 1326 | OVS_EXCLUDED(ofproto_mutex) |
7ee20df1 | 1327 | { |
834fe5cb BP |
1328 | /* This skips the ofmonitor and flow-removed notifications because the |
1329 | * switch is being deleted and any OpenFlow channels have been or soon will | |
1330 | * be killed. */ | |
15aaf599 | 1331 | ovs_mutex_lock(&ofproto_mutex); |
8b81d1ef | 1332 | oftable_remove_rule__(ofproto, rule); |
8037acb4 | 1333 | ofproto->ofproto_class->rule_delete(rule); |
15aaf599 | 1334 | ovs_mutex_unlock(&ofproto_mutex); |
8037acb4 BP |
1335 | } |
1336 | ||
1337 | static void | |
1338 | ofproto_flush__(struct ofproto *ofproto) | |
15aaf599 | 1339 | OVS_EXCLUDED(ofproto_mutex) |
8037acb4 | 1340 | { |
d0918789 | 1341 | struct oftable *table; |
7ee20df1 BP |
1342 | |
1343 | if (ofproto->ofproto_class->flush) { | |
1344 | ofproto->ofproto_class->flush(ofproto); | |
1345 | } | |
1346 | ||
15aaf599 | 1347 | ovs_mutex_lock(&ofproto_mutex); |
b772ded8 | 1348 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
78c8df12 | 1349 | struct rule *rule; |
7ee20df1 | 1350 | |
5c67e4af BP |
1351 | if (table->flags & OFTABLE_HIDDEN) { |
1352 | continue; | |
1353 | } | |
1354 | ||
78c8df12 | 1355 | CLS_FOR_EACH_SAFE (rule, cr, &table->cls) { |
b20f4073 | 1356 | ofproto_rule_delete__(rule, OFPRR_DELETE); |
7ee20df1 BP |
1357 | } |
1358 | } | |
15aaf599 | 1359 | ovs_mutex_unlock(&ofproto_mutex); |
7ee20df1 BP |
1360 | } |
1361 | ||
7395c052 NZ |
1362 | static void delete_group(struct ofproto *ofproto, uint32_t group_id); |
1363 | ||
abe529af BP |
1364 | static void |
1365 | ofproto_destroy__(struct ofproto *ofproto) | |
15aaf599 | 1366 | OVS_EXCLUDED(ofproto_mutex) |
abe529af | 1367 | { |
d0918789 | 1368 | struct oftable *table; |
6c1491fb | 1369 | |
35412852 | 1370 | destroy_rule_executes(ofproto); |
7395c052 | 1371 | delete_group(ofproto, OFPG_ALL); |
5c09b672 GS |
1372 | |
1373 | guarded_list_destroy(&ofproto->rule_executes); | |
7395c052 NZ |
1374 | ovs_rwlock_destroy(&ofproto->groups_rwlock); |
1375 | hmap_destroy(&ofproto->groups); | |
1376 | ||
abe529af | 1377 | connmgr_destroy(ofproto->connmgr); |
fa066f01 | 1378 | |
abe529af BP |
1379 | hmap_remove(&all_ofprotos, &ofproto->hmap_node); |
1380 | free(ofproto->name); | |
955a7127 | 1381 | free(ofproto->type); |
abe529af BP |
1382 | free(ofproto->mfr_desc); |
1383 | free(ofproto->hw_desc); | |
1384 | free(ofproto->sw_desc); | |
1385 | free(ofproto->serial_desc); | |
1386 | free(ofproto->dp_desc); | |
abe529af | 1387 | hmap_destroy(&ofproto->ports); |
fdcea803 | 1388 | hmap_destroy(&ofproto->ofport_usage); |
abe529af | 1389 | shash_destroy(&ofproto->port_by_name); |
e1b1d06a | 1390 | simap_destroy(&ofproto->ofp_requests); |
6c1491fb | 1391 | |
b772ded8 | 1392 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
d0918789 | 1393 | oftable_destroy(table); |
6c1491fb BP |
1394 | } |
1395 | free(ofproto->tables); | |
fa066f01 | 1396 | |
1406c79b BP |
1397 | ovs_assert(hindex_is_empty(&ofproto->cookies)); |
1398 | hindex_destroy(&ofproto->cookies); | |
1399 | ||
35f48b8b BP |
1400 | ovs_assert(hmap_is_empty(&ofproto->learned_cookies)); |
1401 | hmap_destroy(&ofproto->learned_cookies); | |
1402 | ||
52a90c29 BP |
1403 | free(ofproto->vlan_bitmap); |
1404 | ||
abe529af BP |
1405 | ofproto->ofproto_class->dealloc(ofproto); |
1406 | } | |
fa066f01 | 1407 | |
064af421 BP |
1408 | void |
1409 | ofproto_destroy(struct ofproto *p) | |
15aaf599 | 1410 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 1411 | { |
ca0f572c | 1412 | struct ofport *ofport, *next_ofport; |
fdcea803 | 1413 | struct ofport_usage *usage, *next_usage; |
064af421 BP |
1414 | |
1415 | if (!p) { | |
1416 | return; | |
1417 | } | |
1418 | ||
717de9ff JR |
1419 | if (p->meters) { |
1420 | meter_delete(p, 1, p->meter_features.max_meters); | |
1421 | p->meter_features.max_meters = 0; | |
1422 | free(p->meters); | |
1423 | p->meters = NULL; | |
1424 | } | |
1425 | ||
7ee20df1 | 1426 | ofproto_flush__(p); |
4e8e4213 | 1427 | HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) { |
abe529af | 1428 | ofport_destroy(ofport); |
064af421 | 1429 | } |
064af421 | 1430 | |
fdcea803 GS |
1431 | HMAP_FOR_EACH_SAFE (usage, next_usage, hmap_node, &p->ofport_usage) { |
1432 | hmap_remove(&p->ofport_usage, &usage->hmap_node); | |
1433 | free(usage); | |
1434 | } | |
1435 | ||
abe529af | 1436 | p->ofproto_class->destruct(p); |
f416c8d6 JR |
1437 | /* Destroying rules is deferred, must have 'ofproto' around for them. */ |
1438 | ovsrcu_postpone(ofproto_destroy__, p); | |
064af421 BP |
1439 | } |
1440 | ||
abe529af BP |
1441 | /* Destroys the datapath with the respective 'name' and 'type'. With the Linux |
1442 | * kernel datapath, for example, this destroys the datapath in the kernel, and | |
1443 | * with the netdev-based datapath, it tears down the data structures that | |
1444 | * represent the datapath. | |
1445 | * | |
1446 | * The datapath should not be currently open as an ofproto. */ | |
064af421 | 1447 | int |
abe529af | 1448 | ofproto_delete(const char *name, const char *type) |
064af421 | 1449 | { |
abe529af BP |
1450 | const struct ofproto_class *class = ofproto_class_find__(type); |
1451 | return (!class ? EAFNOSUPPORT | |
1452 | : !class->del ? EACCES | |
1453 | : class->del(type, name)); | |
064af421 BP |
1454 | } |
1455 | ||
e9e28be3 BP |
1456 | static void |
1457 | process_port_change(struct ofproto *ofproto, int error, char *devname) | |
1458 | { | |
1459 | if (error == ENOBUFS) { | |
1460 | reinit_ports(ofproto); | |
1461 | } else if (!error) { | |
1462 | update_port(ofproto, devname); | |
1463 | free(devname); | |
1464 | } | |
1465 | } | |
1466 | ||
11a574a7 JP |
1467 | int |
1468 | ofproto_type_run(const char *datapath_type) | |
1469 | { | |
1470 | const struct ofproto_class *class; | |
1471 | int error; | |
1472 | ||
1473 | datapath_type = ofproto_normalize_type(datapath_type); | |
1474 | class = ofproto_class_find__(datapath_type); | |
1475 | ||
1476 | error = class->type_run ? class->type_run(datapath_type) : 0; | |
1477 | if (error && error != EAGAIN) { | |
1478 | VLOG_ERR_RL(&rl, "%s: type_run failed (%s)", | |
10a89ef0 | 1479 | datapath_type, ovs_strerror(error)); |
11a574a7 JP |
1480 | } |
1481 | return error; | |
1482 | } | |
1483 | ||
11a574a7 JP |
1484 | void |
1485 | ofproto_type_wait(const char *datapath_type) | |
1486 | { | |
1487 | const struct ofproto_class *class; | |
1488 | ||
1489 | datapath_type = ofproto_normalize_type(datapath_type); | |
1490 | class = ofproto_class_find__(datapath_type); | |
1491 | ||
1492 | if (class->type_wait) { | |
1493 | class->type_wait(datapath_type); | |
1494 | } | |
1495 | } | |
1496 | ||
064af421 | 1497 | int |
abe529af | 1498 | ofproto_run(struct ofproto *p) |
064af421 | 1499 | { |
064af421 | 1500 | int error; |
da4a6191 | 1501 | uint64_t new_seq; |
064af421 | 1502 | |
abe529af | 1503 | error = p->ofproto_class->run(p); |
5fcc0d00 | 1504 | if (error && error != EAGAIN) { |
10a89ef0 | 1505 | VLOG_ERR_RL(&rl, "%s: run failed (%s)", p->name, ovs_strerror(error)); |
149f577a JG |
1506 | } |
1507 | ||
35412852 BP |
1508 | run_rule_executes(p); |
1509 | ||
448c2fa8 EJ |
1510 | /* Restore the eviction group heap invariant occasionally. */ |
1511 | if (p->eviction_group_timer < time_msec()) { | |
1512 | size_t i; | |
1513 | ||
1514 | p->eviction_group_timer = time_msec() + 1000; | |
1515 | ||
1516 | for (i = 0; i < p->n_tables; i++) { | |
1517 | struct oftable *table = &p->tables[i]; | |
1518 | struct eviction_group *evg; | |
448c2fa8 EJ |
1519 | struct rule *rule; |
1520 | ||
1521 | if (!table->eviction_fields) { | |
1522 | continue; | |
1523 | } | |
1524 | ||
15aaf599 | 1525 | ovs_mutex_lock(&ofproto_mutex); |
5f0476ce | 1526 | CLS_FOR_EACH (rule, cr, &table->cls) { |
6d56c1f1 K |
1527 | if (rule->idle_timeout || rule->hard_timeout) { |
1528 | if (!rule->eviction_group) { | |
1529 | eviction_group_add_rule(rule); | |
1530 | } else { | |
1531 | heap_raw_change(&rule->evg_node, | |
1532 | rule_eviction_priority(p, rule)); | |
1533 | } | |
448c2fa8 EJ |
1534 | } |
1535 | } | |
6d56c1f1 K |
1536 | |
1537 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { | |
1538 | heap_rebuild(&evg->rules); | |
1539 | } | |
15aaf599 | 1540 | ovs_mutex_unlock(&ofproto_mutex); |
448c2fa8 EJ |
1541 | } |
1542 | } | |
1543 | ||
5bf0e941 | 1544 | if (p->ofproto_class->port_poll) { |
7436ed80 BP |
1545 | char *devname; |
1546 | ||
5bf0e941 BP |
1547 | while ((error = p->ofproto_class->port_poll(p, &devname)) != EAGAIN) { |
1548 | process_port_change(p, error, devname); | |
064af421 | 1549 | } |
e9e28be3 | 1550 | } |
031d8bff | 1551 | |
da4a6191 JS |
1552 | new_seq = seq_read(connectivity_seq_get()); |
1553 | if (new_seq != p->change_seq) { | |
1554 | struct sset devnames; | |
1555 | const char *devname; | |
1556 | struct ofport *ofport; | |
1557 | ||
1558 | /* Update OpenFlow port status for any port whose netdev has changed. | |
1559 | * | |
1560 | * Refreshing a given 'ofport' can cause an arbitrary ofport to be | |
1561 | * destroyed, so it's not safe to update ports directly from the | |
1562 | * HMAP_FOR_EACH loop, or even to use HMAP_FOR_EACH_SAFE. Instead, we | |
1563 | * need this two-phase approach. */ | |
1564 | sset_init(&devnames); | |
1565 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
61501798 AW |
1566 | uint64_t port_change_seq; |
1567 | ||
1568 | port_change_seq = netdev_get_change_seq(ofport->netdev); | |
1569 | if (ofport->change_seq != port_change_seq) { | |
1570 | ofport->change_seq = port_change_seq; | |
1571 | sset_add(&devnames, netdev_get_name(ofport->netdev)); | |
1572 | } | |
031d8bff | 1573 | } |
da4a6191 JS |
1574 | SSET_FOR_EACH (devname, &devnames) { |
1575 | update_port(p, devname); | |
1576 | } | |
1577 | sset_destroy(&devnames); | |
1578 | ||
1579 | p->change_seq = new_seq; | |
064af421 BP |
1580 | } |
1581 | ||
834fe5cb | 1582 | connmgr_run(p->connmgr, handle_openflow); |
064af421 | 1583 | |
5fcc0d00 BP |
1584 | return error; |
1585 | } | |
1586 | ||
064af421 BP |
1587 | void |
1588 | ofproto_wait(struct ofproto *p) | |
1589 | { | |
abe529af | 1590 | p->ofproto_class->wait(p); |
5bf0e941 BP |
1591 | if (p->ofproto_class->port_poll_wait) { |
1592 | p->ofproto_class->port_poll_wait(p); | |
e7934396 | 1593 | } |
da4a6191 | 1594 | seq_wait(connectivity_seq_get(), p->change_seq); |
834fe5cb | 1595 | connmgr_wait(p->connmgr); |
064af421 BP |
1596 | } |
1597 | ||
064af421 BP |
1598 | bool |
1599 | ofproto_is_alive(const struct ofproto *p) | |
1600 | { | |
19a87e36 | 1601 | return connmgr_has_controllers(p->connmgr); |
064af421 BP |
1602 | } |
1603 | ||
0d085684 BP |
1604 | /* Adds some memory usage statistics for 'ofproto' into 'usage', for use with |
1605 | * memory_report(). */ | |
1606 | void | |
1607 | ofproto_get_memory_usage(const struct ofproto *ofproto, struct simap *usage) | |
1608 | { | |
1609 | const struct oftable *table; | |
1610 | unsigned int n_rules; | |
1611 | ||
1612 | simap_increase(usage, "ports", hmap_count(&ofproto->ports)); | |
15aaf599 | 1613 | |
0d085684 BP |
1614 | n_rules = 0; |
1615 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
1616 | n_rules += classifier_count(&table->cls); | |
1617 | } | |
1618 | simap_increase(usage, "rules", n_rules); | |
1619 | ||
1620 | if (ofproto->ofproto_class->get_memory_usage) { | |
1621 | ofproto->ofproto_class->get_memory_usage(ofproto, usage); | |
1622 | } | |
1623 | ||
1624 | connmgr_get_memory_usage(ofproto->connmgr, usage); | |
1625 | } | |
1626 | ||
1c030aa5 EJ |
1627 | void |
1628 | ofproto_type_get_memory_usage(const char *datapath_type, struct simap *usage) | |
1629 | { | |
1630 | const struct ofproto_class *class; | |
1631 | ||
1632 | datapath_type = ofproto_normalize_type(datapath_type); | |
1633 | class = ofproto_class_find__(datapath_type); | |
1634 | ||
1635 | if (class && class->type_get_memory_usage) { | |
1636 | class->type_get_memory_usage(datapath_type, usage); | |
1637 | } | |
1638 | } | |
1639 | ||
bffc0589 | 1640 | void |
2cdcb898 | 1641 | ofproto_get_ofproto_controller_info(const struct ofproto *ofproto, |
bffc0589 AE |
1642 | struct shash *info) |
1643 | { | |
19a87e36 | 1644 | connmgr_get_controller_info(ofproto->connmgr, info); |
bffc0589 AE |
1645 | } |
1646 | ||
1647 | void | |
1648 | ofproto_free_ofproto_controller_info(struct shash *info) | |
1649 | { | |
72ba2ed3 | 1650 | connmgr_free_controller_info(info); |
bffc0589 AE |
1651 | } |
1652 | ||
b5827b24 BP |
1653 | /* Makes a deep copy of 'old' into 'port'. */ |
1654 | void | |
1655 | ofproto_port_clone(struct ofproto_port *port, const struct ofproto_port *old) | |
1656 | { | |
1657 | port->name = xstrdup(old->name); | |
1658 | port->type = xstrdup(old->type); | |
1659 | port->ofp_port = old->ofp_port; | |
1660 | } | |
1661 | ||
1662 | /* Frees memory allocated to members of 'ofproto_port'. | |
3a6ccc8c | 1663 | * |
b5827b24 BP |
1664 | * Do not call this function on an ofproto_port obtained from |
1665 | * ofproto_port_dump_next(): that function retains ownership of the data in the | |
1666 | * ofproto_port. */ | |
1667 | void | |
1668 | ofproto_port_destroy(struct ofproto_port *ofproto_port) | |
1669 | { | |
1670 | free(ofproto_port->name); | |
1671 | free(ofproto_port->type); | |
1672 | } | |
1673 | ||
b5827b24 | 1674 | /* Initializes 'dump' to begin dumping the ports in an ofproto. |
3a6ccc8c | 1675 | * |
b5827b24 BP |
1676 | * This function provides no status indication. An error status for the entire |
1677 | * dump operation is provided when it is completed by calling | |
1678 | * ofproto_port_dump_done(). | |
1679 | */ | |
1680 | void | |
1681 | ofproto_port_dump_start(struct ofproto_port_dump *dump, | |
1682 | const struct ofproto *ofproto) | |
1683 | { | |
abe529af BP |
1684 | dump->ofproto = ofproto; |
1685 | dump->error = ofproto->ofproto_class->port_dump_start(ofproto, | |
1686 | &dump->state); | |
b5827b24 BP |
1687 | } |
1688 | ||
1689 | /* Attempts to retrieve another port from 'dump', which must have been created | |
1690 | * with ofproto_port_dump_start(). On success, stores a new ofproto_port into | |
1691 | * 'port' and returns true. On failure, returns false. | |
1692 | * | |
1693 | * Failure might indicate an actual error or merely that the last port has been | |
1694 | * dumped. An error status for the entire dump operation is provided when it | |
1695 | * is completed by calling ofproto_port_dump_done(). | |
1696 | * | |
1697 | * The ofproto owns the data stored in 'port'. It will remain valid until at | |
1698 | * least the next time 'dump' is passed to ofproto_port_dump_next() or | |
1699 | * ofproto_port_dump_done(). */ | |
1700 | bool | |
1701 | ofproto_port_dump_next(struct ofproto_port_dump *dump, | |
1702 | struct ofproto_port *port) | |
1703 | { | |
abe529af BP |
1704 | const struct ofproto *ofproto = dump->ofproto; |
1705 | ||
1706 | if (dump->error) { | |
1707 | return false; | |
1708 | } | |
b5827b24 | 1709 | |
abe529af BP |
1710 | dump->error = ofproto->ofproto_class->port_dump_next(ofproto, dump->state, |
1711 | port); | |
1712 | if (dump->error) { | |
1713 | ofproto->ofproto_class->port_dump_done(ofproto, dump->state); | |
1714 | return false; | |
b5827b24 | 1715 | } |
abe529af | 1716 | return true; |
b5827b24 BP |
1717 | } |
1718 | ||
1719 | /* Completes port table dump operation 'dump', which must have been created | |
1720 | * with ofproto_port_dump_start(). Returns 0 if the dump operation was | |
1721 | * error-free, otherwise a positive errno value describing the problem. */ | |
3a6ccc8c | 1722 | int |
b5827b24 | 1723 | ofproto_port_dump_done(struct ofproto_port_dump *dump) |
3a6ccc8c | 1724 | { |
abe529af BP |
1725 | const struct ofproto *ofproto = dump->ofproto; |
1726 | if (!dump->error) { | |
1727 | dump->error = ofproto->ofproto_class->port_dump_done(ofproto, | |
1728 | dump->state); | |
1729 | } | |
1730 | return dump->error == EOF ? 0 : dump->error; | |
b5827b24 BP |
1731 | } |
1732 | ||
0aeaabc8 JP |
1733 | /* Returns the type to pass to netdev_open() when a datapath of type |
1734 | * 'datapath_type' has a port of type 'port_type', for a few special | |
1735 | * cases when a netdev type differs from a port type. For example, when | |
1736 | * using the userspace datapath, a port of type "internal" needs to be | |
1737 | * opened as "tap". | |
1738 | * | |
1739 | * Returns either 'type' itself or a string literal, which must not be | |
1740 | * freed. */ | |
1741 | const char * | |
1742 | ofproto_port_open_type(const char *datapath_type, const char *port_type) | |
1743 | { | |
1744 | const struct ofproto_class *class; | |
1745 | ||
1746 | datapath_type = ofproto_normalize_type(datapath_type); | |
1747 | class = ofproto_class_find__(datapath_type); | |
1748 | if (!class) { | |
1749 | return port_type; | |
1750 | } | |
1751 | ||
1752 | return (class->port_open_type | |
1753 | ? class->port_open_type(datapath_type, port_type) | |
1754 | : port_type); | |
1755 | } | |
1756 | ||
81816a5f JP |
1757 | /* Attempts to add 'netdev' as a port on 'ofproto'. If 'ofp_portp' is |
1758 | * non-null and '*ofp_portp' is not OFPP_NONE, attempts to use that as | |
1759 | * the port's OpenFlow port number. | |
1760 | * | |
1761 | * If successful, returns 0 and sets '*ofp_portp' to the new port's | |
1762 | * OpenFlow port number (if 'ofp_portp' is non-null). On failure, | |
1763 | * returns a positive errno value and sets '*ofp_portp' to OFPP_NONE (if | |
1764 | * 'ofp_portp' is non-null). */ | |
b5827b24 BP |
1765 | int |
1766 | ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev, | |
4e022ec0 | 1767 | ofp_port_t *ofp_portp) |
b5827b24 | 1768 | { |
4e022ec0 | 1769 | ofp_port_t ofp_port = ofp_portp ? *ofp_portp : OFPP_NONE; |
3a6ccc8c BP |
1770 | int error; |
1771 | ||
e1b1d06a | 1772 | error = ofproto->ofproto_class->port_add(ofproto, netdev); |
1fa24dea | 1773 | if (!error) { |
e1b1d06a JP |
1774 | const char *netdev_name = netdev_get_name(netdev); |
1775 | ||
4e022ec0 AW |
1776 | simap_put(&ofproto->ofp_requests, netdev_name, |
1777 | ofp_to_u16(ofp_port)); | |
e1b1d06a | 1778 | update_port(ofproto, netdev_name); |
1fa24dea | 1779 | } |
b5827b24 | 1780 | if (ofp_portp) { |
17f69db5 BP |
1781 | *ofp_portp = OFPP_NONE; |
1782 | if (!error) { | |
1783 | struct ofproto_port ofproto_port; | |
1784 | ||
1785 | error = ofproto_port_query_by_name(ofproto, | |
1786 | netdev_get_name(netdev), | |
1787 | &ofproto_port); | |
1788 | if (!error) { | |
1789 | *ofp_portp = ofproto_port.ofp_port; | |
1790 | ofproto_port_destroy(&ofproto_port); | |
1791 | } | |
1792 | } | |
3a6ccc8c BP |
1793 | } |
1794 | return error; | |
1795 | } | |
1796 | ||
b5827b24 BP |
1797 | /* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and |
1798 | * initializes '*port' appropriately; on failure, returns a positive errno | |
1799 | * value. | |
1800 | * | |
abe529af | 1801 | * The caller owns the data in 'ofproto_port' and must free it with |
b5827b24 BP |
1802 | * ofproto_port_destroy() when it is no longer needed. */ |
1803 | int | |
1804 | ofproto_port_query_by_name(const struct ofproto *ofproto, const char *devname, | |
1805 | struct ofproto_port *port) | |
a4e2e1f2 | 1806 | { |
b5827b24 BP |
1807 | int error; |
1808 | ||
abe529af BP |
1809 | error = ofproto->ofproto_class->port_query_by_name(ofproto, devname, port); |
1810 | if (error) { | |
1811 | memset(port, 0, sizeof *port); | |
b5827b24 BP |
1812 | } |
1813 | return error; | |
a4e2e1f2 EJ |
1814 | } |
1815 | ||
b5827b24 | 1816 | /* Deletes port number 'ofp_port' from the datapath for 'ofproto'. |
3a6ccc8c | 1817 | * Returns 0 if successful, otherwise a positive errno. */ |
064af421 | 1818 | int |
4e022ec0 | 1819 | ofproto_port_del(struct ofproto *ofproto, ofp_port_t ofp_port) |
064af421 | 1820 | { |
abe529af | 1821 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1264ec95 | 1822 | const char *name = ofport ? netdev_get_name(ofport->netdev) : "<unknown>"; |
e1b1d06a | 1823 | struct simap_node *ofp_request_node; |
3cf10406 | 1824 | int error; |
cdee00fd | 1825 | |
e1b1d06a JP |
1826 | ofp_request_node = simap_find(&ofproto->ofp_requests, name); |
1827 | if (ofp_request_node) { | |
1828 | simap_delete(&ofproto->ofp_requests, ofp_request_node); | |
1829 | } | |
1830 | ||
abe529af | 1831 | error = ofproto->ofproto_class->port_del(ofproto, ofp_port); |
892815f5 | 1832 | if (!error && ofport) { |
1264ec95 BP |
1833 | /* 'name' is the netdev's name and update_port() is going to close the |
1834 | * netdev. Just in case update_port() refers to 'name' after it | |
3a6ccc8c BP |
1835 | * destroys 'ofport', make a copy of it around the update_port() |
1836 | * call. */ | |
1837 | char *devname = xstrdup(name); | |
1838 | update_port(ofproto, devname); | |
1839 | free(devname); | |
3cf10406 BP |
1840 | } |
1841 | return error; | |
064af421 BP |
1842 | } |
1843 | ||
276f6518 SH |
1844 | static void |
1845 | flow_mod_init(struct ofputil_flow_mod *fm, | |
1846 | const struct match *match, unsigned int priority, | |
1847 | const struct ofpact *ofpacts, size_t ofpacts_len, | |
1848 | enum ofp_flow_mod_command command) | |
1849 | { | |
1850 | memset(fm, 0, sizeof *fm); | |
1851 | fm->match = *match; | |
1852 | fm->priority = priority; | |
1853 | fm->cookie = 0; | |
1854 | fm->new_cookie = 0; | |
1855 | fm->modify_cookie = false; | |
1856 | fm->table_id = 0; | |
1857 | fm->command = command; | |
1858 | fm->idle_timeout = 0; | |
1859 | fm->hard_timeout = 0; | |
1860 | fm->buffer_id = UINT32_MAX; | |
1861 | fm->out_port = OFPP_ANY; | |
1862 | fm->out_group = OFPG_ANY; | |
1863 | fm->flags = 0; | |
1864 | fm->ofpacts = CONST_CAST(struct ofpact *, ofpacts); | |
1865 | fm->ofpacts_len = ofpacts_len; | |
cc40d06b | 1866 | fm->delete_reason = OFPRR_DELETE; |
276f6518 SH |
1867 | } |
1868 | ||
97f63e57 BP |
1869 | static int |
1870 | simple_flow_mod(struct ofproto *ofproto, | |
1871 | const struct match *match, unsigned int priority, | |
1872 | const struct ofpact *ofpacts, size_t ofpacts_len, | |
1873 | enum ofp_flow_mod_command command) | |
1874 | { | |
1875 | struct ofputil_flow_mod fm; | |
1876 | ||
276f6518 | 1877 | flow_mod_init(&fm, match, priority, ofpacts, ofpacts_len, command); |
15aaf599 | 1878 | |
baae3d02 | 1879 | return handle_flow_mod__(ofproto, &fm, NULL); |
97f63e57 BP |
1880 | } |
1881 | ||
6c1491fb | 1882 | /* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and |
fa8b054f BP |
1883 | * performs the 'n_actions' actions in 'actions'. The new flow will not |
1884 | * timeout. | |
1885 | * | |
1886 | * If cls_rule->priority is in the range of priorities supported by OpenFlow | |
1887 | * (0...65535, inclusive) then the flow will be visible to OpenFlow | |
1888 | * controllers; otherwise, it will be hidden. | |
1889 | * | |
f25d0cf3 | 1890 | * The caller retains ownership of 'cls_rule' and 'ofpacts'. |
6c1491fb BP |
1891 | * |
1892 | * This is a helper function for in-band control and fail-open. */ | |
064af421 | 1893 | void |
81a76618 BP |
1894 | ofproto_add_flow(struct ofproto *ofproto, const struct match *match, |
1895 | unsigned int priority, | |
f25d0cf3 | 1896 | const struct ofpact *ofpacts, size_t ofpacts_len) |
15aaf599 | 1897 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 1898 | { |
7ee20df1 | 1899 | const struct rule *rule; |
6f00e29b | 1900 | bool must_add; |
7ee20df1 | 1901 | |
97f63e57 BP |
1902 | /* First do a cheap check whether the rule we're looking for already exists |
1903 | * with the actions that we want. If it does, then we're done. */ | |
81a76618 BP |
1904 | rule = rule_from_cls_rule(classifier_find_match_exactly( |
1905 | &ofproto->tables[0].cls, match, priority)); | |
6f00e29b | 1906 | if (rule) { |
dc723c44 | 1907 | const struct rule_actions *actions = rule_get_actions(rule); |
06a0f3e2 | 1908 | must_add = !ofpacts_equal(actions->ofpacts, actions->ofpacts_len, |
6f00e29b | 1909 | ofpacts, ofpacts_len); |
6f00e29b BP |
1910 | } else { |
1911 | must_add = true; | |
1912 | } | |
97f63e57 BP |
1913 | |
1914 | /* If there's no such rule or the rule doesn't have the actions we want, | |
1915 | * fall back to a executing a full flow mod. We can't optimize this at | |
1916 | * all because we didn't take enough locks above to ensure that the flow | |
1917 | * table didn't already change beneath us. */ | |
6f00e29b | 1918 | if (must_add) { |
97f63e57 BP |
1919 | simple_flow_mod(ofproto, match, priority, ofpacts, ofpacts_len, |
1920 | OFPFC_MODIFY_STRICT); | |
7ee20df1 | 1921 | } |
064af421 BP |
1922 | } |
1923 | ||
75a75043 | 1924 | /* Executes the flow modification specified in 'fm'. Returns 0 on success, an |
90bf1e07 BP |
1925 | * OFPERR_* OpenFlow error code on failure, or OFPROTO_POSTPONE if the |
1926 | * operation cannot be initiated now but may be retried later. | |
75a75043 | 1927 | * |
1b63b91e BP |
1928 | * This is a helper function for in-band control and fail-open and the "learn" |
1929 | * action. */ | |
75a75043 | 1930 | int |
e3b56933 | 1931 | ofproto_flow_mod(struct ofproto *ofproto, struct ofputil_flow_mod *fm) |
15aaf599 | 1932 | OVS_EXCLUDED(ofproto_mutex) |
75a75043 | 1933 | { |
b90d6ee5 JR |
1934 | /* Optimize for the most common case of a repeated learn action. |
1935 | * If an identical flow already exists we only need to update its | |
1936 | * 'modified' time. */ | |
1937 | if (fm->command == OFPFC_MODIFY_STRICT && fm->table_id != OFPTT_ALL | |
1938 | && !(fm->flags & OFPUTIL_FF_RESET_COUNTS)) { | |
1939 | struct oftable *table = &ofproto->tables[fm->table_id]; | |
b90d6ee5 JR |
1940 | struct rule *rule; |
1941 | bool done = false; | |
1942 | ||
0ef165ec EJ |
1943 | rule = rule_from_cls_rule(classifier_find_match_exactly(&table->cls, |
1944 | &fm->match, | |
1945 | fm->priority)); | |
b90d6ee5 JR |
1946 | if (rule) { |
1947 | /* Reading many of the rule fields and writing on 'modified' | |
1948 | * requires the rule->mutex. Also, rule->actions may change | |
1949 | * if rule->mutex is not held. */ | |
06a0f3e2 BP |
1950 | const struct rule_actions *actions; |
1951 | ||
b90d6ee5 | 1952 | ovs_mutex_lock(&rule->mutex); |
06a0f3e2 | 1953 | actions = rule_get_actions(rule); |
b90d6ee5 JR |
1954 | if (rule->idle_timeout == fm->idle_timeout |
1955 | && rule->hard_timeout == fm->hard_timeout | |
1956 | && rule->flags == (fm->flags & OFPUTIL_FF_STATE) | |
1957 | && (!fm->modify_cookie || (fm->new_cookie == rule->flow_cookie)) | |
1958 | && ofpacts_equal(fm->ofpacts, fm->ofpacts_len, | |
06a0f3e2 | 1959 | actions->ofpacts, actions->ofpacts_len)) { |
b90d6ee5 JR |
1960 | /* Rule already exists and need not change, only update the |
1961 | modified timestamp. */ | |
1962 | rule->modified = time_msec(); | |
1963 | done = true; | |
1964 | } | |
1965 | ovs_mutex_unlock(&rule->mutex); | |
1966 | } | |
b90d6ee5 JR |
1967 | |
1968 | if (done) { | |
1969 | return 0; | |
1970 | } | |
1971 | } | |
1972 | ||
baae3d02 | 1973 | return handle_flow_mod__(ofproto, fm, NULL); |
75a75043 BP |
1974 | } |
1975 | ||
6c1491fb BP |
1976 | /* Searches for a rule with matching criteria exactly equal to 'target' in |
1977 | * ofproto's table 0 and, if it finds one, deletes it. | |
1978 | * | |
1979 | * This is a helper function for in-band control and fail-open. */ | |
b20f4073 | 1980 | void |
81a76618 BP |
1981 | ofproto_delete_flow(struct ofproto *ofproto, |
1982 | const struct match *target, unsigned int priority) | |
15aaf599 | 1983 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 1984 | { |
8037acb4 | 1985 | struct classifier *cls = &ofproto->tables[0].cls; |
064af421 BP |
1986 | struct rule *rule; |
1987 | ||
97f63e57 BP |
1988 | /* First do a cheap check whether the rule we're looking for has already |
1989 | * been deleted. If so, then we're done. */ | |
8037acb4 BP |
1990 | rule = rule_from_cls_rule(classifier_find_match_exactly(cls, target, |
1991 | priority)); | |
834fe5cb BP |
1992 | if (!rule) { |
1993 | return; | |
bcf84111 | 1994 | } |
834fe5cb BP |
1995 | |
1996 | /* Execute a flow mod. We can't optimize this at all because we didn't | |
1997 | * take enough locks above to ensure that the flow table didn't already | |
1998 | * change beneath us. */ | |
1999 | simple_flow_mod(ofproto, target, priority, NULL, 0, OFPFC_DELETE_STRICT); | |
142e1f5c BP |
2000 | } |
2001 | ||
834fe5cb BP |
2002 | /* Delete all of the flows from all of ofproto's flow tables, then reintroduce |
2003 | * the flows required by in-band control and fail-open. */ | |
142e1f5c BP |
2004 | void |
2005 | ofproto_flush_flows(struct ofproto *ofproto) | |
2006 | { | |
7ee20df1 | 2007 | COVERAGE_INC(ofproto_flush); |
834fe5cb BP |
2008 | ofproto_flush__(ofproto); |
2009 | connmgr_flushed(ofproto->connmgr); | |
064af421 BP |
2010 | } |
2011 | \f | |
2012 | static void | |
2013 | reinit_ports(struct ofproto *p) | |
2014 | { | |
abe529af | 2015 | struct ofproto_port_dump dump; |
b3c01ed3 | 2016 | struct sset devnames; |
064af421 | 2017 | struct ofport *ofport; |
abe529af | 2018 | struct ofproto_port ofproto_port; |
b3c01ed3 | 2019 | const char *devname; |
064af421 | 2020 | |
898bf89d JP |
2021 | COVERAGE_INC(ofproto_reinit_ports); |
2022 | ||
b3c01ed3 | 2023 | sset_init(&devnames); |
4e8e4213 | 2024 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { |
1264ec95 | 2025 | sset_add(&devnames, netdev_get_name(ofport->netdev)); |
064af421 | 2026 | } |
abe529af BP |
2027 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { |
2028 | sset_add(&devnames, ofproto_port.name); | |
064af421 | 2029 | } |
064af421 | 2030 | |
b3c01ed3 BP |
2031 | SSET_FOR_EACH (devname, &devnames) { |
2032 | update_port(p, devname); | |
064af421 | 2033 | } |
b3c01ed3 | 2034 | sset_destroy(&devnames); |
064af421 BP |
2035 | } |
2036 | ||
4e022ec0 | 2037 | static ofp_port_t |
e1b1d06a JP |
2038 | alloc_ofp_port(struct ofproto *ofproto, const char *netdev_name) |
2039 | { | |
4e022ec0 | 2040 | uint16_t port_idx; |
e1b1d06a | 2041 | |
4e022ec0 | 2042 | port_idx = simap_get(&ofproto->ofp_requests, netdev_name); |
430dbb14 | 2043 | port_idx = port_idx ? port_idx : UINT16_MAX; |
4e022ec0 | 2044 | |
430dbb14 | 2045 | if (port_idx >= ofproto->max_ports |
fdcea803 GS |
2046 | || ofport_get_usage(ofproto, u16_to_ofp(port_idx)) == LLONG_MAX) { |
2047 | uint16_t lru_ofport = 0, end_port_no = ofproto->alloc_port_no; | |
2048 | long long int last_used_at, lru = LLONG_MAX; | |
e1b1d06a | 2049 | |
e1b1d06a JP |
2050 | /* Search for a free OpenFlow port number. We try not to |
2051 | * immediately reuse them to prevent problems due to old | |
484c8355 BP |
2052 | * flows. |
2053 | * | |
2054 | * We limit the automatically assigned port numbers to the lower half | |
2055 | * of the port range, to reserve the upper half for assignment by | |
2056 | * controllers. */ | |
6033d9d9 | 2057 | for (;;) { |
484c8355 | 2058 | if (++ofproto->alloc_port_no >= MIN(ofproto->max_ports, 32768)) { |
fdcea803 | 2059 | ofproto->alloc_port_no = 1; |
6033d9d9 | 2060 | } |
fdcea803 GS |
2061 | last_used_at = ofport_get_usage(ofproto, |
2062 | u16_to_ofp(ofproto->alloc_port_no)); | |
2063 | if (!last_used_at) { | |
430dbb14 | 2064 | port_idx = ofproto->alloc_port_no; |
6033d9d9 | 2065 | break; |
865b26a4 GS |
2066 | } else if ( last_used_at < time_msec() - 60*60*1000) { |
2067 | /* If the port with ofport 'ofproto->alloc_port_no' was deleted | |
2068 | * more than an hour ago, consider it usable. */ | |
2069 | ofport_remove_usage(ofproto, | |
2070 | u16_to_ofp(ofproto->alloc_port_no)); | |
2071 | port_idx = ofproto->alloc_port_no; | |
2072 | break; | |
fdcea803 GS |
2073 | } else if (last_used_at < lru) { |
2074 | lru = last_used_at; | |
2075 | lru_ofport = ofproto->alloc_port_no; | |
e1b1d06a | 2076 | } |
fdcea803 | 2077 | |
430dbb14 | 2078 | if (ofproto->alloc_port_no == end_port_no) { |
fdcea803 GS |
2079 | if (lru_ofport) { |
2080 | port_idx = lru_ofport; | |
2081 | break; | |
2082 | } | |
6033d9d9 | 2083 | return OFPP_NONE; |
e1b1d06a JP |
2084 | } |
2085 | } | |
2086 | } | |
fdcea803 | 2087 | ofport_set_usage(ofproto, u16_to_ofp(port_idx), LLONG_MAX); |
4e022ec0 | 2088 | return u16_to_ofp(port_idx); |
e1b1d06a JP |
2089 | } |
2090 | ||
2091 | static void | |
fdcea803 | 2092 | dealloc_ofp_port(struct ofproto *ofproto, ofp_port_t ofp_port) |
e1b1d06a | 2093 | { |
430dbb14 | 2094 | if (ofp_to_u16(ofp_port) < ofproto->max_ports) { |
fdcea803 | 2095 | ofport_set_usage(ofproto, ofp_port, time_msec()); |
40fa9417 | 2096 | } |
e1b1d06a JP |
2097 | } |
2098 | ||
fbfa2911 BP |
2099 | /* Opens and returns a netdev for 'ofproto_port' in 'ofproto', or a null |
2100 | * pointer if the netdev cannot be opened. On success, also fills in | |
d7d92203 | 2101 | * '*pp'. */ |
b33951b8 | 2102 | static struct netdev * |
e1b1d06a JP |
2103 | ofport_open(struct ofproto *ofproto, |
2104 | struct ofproto_port *ofproto_port, | |
9e1fd49b | 2105 | struct ofputil_phy_port *pp) |
064af421 BP |
2106 | { |
2107 | enum netdev_flags flags; | |
064af421 | 2108 | struct netdev *netdev; |
064af421 BP |
2109 | int error; |
2110 | ||
18812dff | 2111 | error = netdev_open(ofproto_port->name, ofproto_port->type, &netdev); |
064af421 | 2112 | if (error) { |
fbfa2911 | 2113 | VLOG_WARN_RL(&rl, "%s: ignoring port %s (%"PRIu16") because netdev %s " |
064af421 | 2114 | "cannot be opened (%s)", |
fbfa2911 | 2115 | ofproto->name, |
abe529af | 2116 | ofproto_port->name, ofproto_port->ofp_port, |
10a89ef0 | 2117 | ofproto_port->name, ovs_strerror(error)); |
064af421 BP |
2118 | return NULL; |
2119 | } | |
2120 | ||
e1b1d06a JP |
2121 | if (ofproto_port->ofp_port == OFPP_NONE) { |
2122 | if (!strcmp(ofproto->name, ofproto_port->name)) { | |
2123 | ofproto_port->ofp_port = OFPP_LOCAL; | |
2124 | } else { | |
2125 | ofproto_port->ofp_port = alloc_ofp_port(ofproto, | |
2126 | ofproto_port->name); | |
2127 | } | |
2128 | } | |
9e1fd49b BP |
2129 | pp->port_no = ofproto_port->ofp_port; |
2130 | netdev_get_etheraddr(netdev, pp->hw_addr); | |
2131 | ovs_strlcpy(pp->name, ofproto_port->name, sizeof pp->name); | |
064af421 | 2132 | netdev_get_flags(netdev, &flags); |
9e1fd49b BP |
2133 | pp->config = flags & NETDEV_UP ? 0 : OFPUTIL_PC_PORT_DOWN; |
2134 | pp->state = netdev_get_carrier(netdev) ? 0 : OFPUTIL_PS_LINK_DOWN; | |
2135 | netdev_get_features(netdev, &pp->curr, &pp->advertised, | |
2136 | &pp->supported, &pp->peer); | |
cd65125d BP |
2137 | pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000; |
2138 | pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000; | |
118c4676 | 2139 | |
b33951b8 | 2140 | return netdev; |
064af421 BP |
2141 | } |
2142 | ||
b33951b8 | 2143 | /* Returns true if most fields of 'a' and 'b' are equal. Differences in name, |
d7d92203 | 2144 | * port number, and 'config' bits other than OFPUTIL_PC_PORT_DOWN are |
b33951b8 BP |
2145 | * disregarded. */ |
2146 | static bool | |
9e1fd49b BP |
2147 | ofport_equal(const struct ofputil_phy_port *a, |
2148 | const struct ofputil_phy_port *b) | |
064af421 | 2149 | { |
9e1fd49b | 2150 | return (eth_addr_equals(a->hw_addr, b->hw_addr) |
064af421 | 2151 | && a->state == b->state |
9e1fd49b | 2152 | && !((a->config ^ b->config) & OFPUTIL_PC_PORT_DOWN) |
064af421 BP |
2153 | && a->curr == b->curr |
2154 | && a->advertised == b->advertised | |
2155 | && a->supported == b->supported | |
9e1fd49b BP |
2156 | && a->peer == b->peer |
2157 | && a->curr_speed == b->curr_speed | |
2158 | && a->max_speed == b->max_speed); | |
064af421 BP |
2159 | } |
2160 | ||
b33951b8 BP |
2161 | /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'. |
2162 | * The caller must ensure that 'p' does not have a conflicting ofport (that is, | |
2163 | * one with the same name or port number). */ | |
064af421 | 2164 | static void |
b33951b8 | 2165 | ofport_install(struct ofproto *p, |
9e1fd49b | 2166 | struct netdev *netdev, const struct ofputil_phy_port *pp) |
064af421 | 2167 | { |
b33951b8 BP |
2168 | const char *netdev_name = netdev_get_name(netdev); |
2169 | struct ofport *ofport; | |
abe529af | 2170 | int error; |
72b06300 | 2171 | |
b33951b8 | 2172 | /* Create ofport. */ |
abe529af BP |
2173 | ofport = p->ofproto_class->port_alloc(); |
2174 | if (!ofport) { | |
2175 | error = ENOMEM; | |
2176 | goto error; | |
2177 | } | |
0f7d71a5 | 2178 | ofport->ofproto = p; |
b33951b8 | 2179 | ofport->netdev = netdev; |
61501798 | 2180 | ofport->change_seq = netdev_get_change_seq(netdev); |
9e1fd49b BP |
2181 | ofport->pp = *pp; |
2182 | ofport->ofp_port = pp->port_no; | |
65e0be10 | 2183 | ofport->created = time_msec(); |
b33951b8 BP |
2184 | |
2185 | /* Add port to 'p'. */ | |
4e022ec0 | 2186 | hmap_insert(&p->ports, &ofport->hmap_node, |
f9c0c3ec | 2187 | hash_ofp_port(ofport->ofp_port)); |
72b06300 | 2188 | shash_add(&p->port_by_name, netdev_name, ofport); |
abe529af | 2189 | |
ada3428f | 2190 | update_mtu(p, ofport); |
9197df76 | 2191 | |
abe529af BP |
2192 | /* Let the ofproto_class initialize its private data. */ |
2193 | error = p->ofproto_class->port_construct(ofport); | |
2194 | if (error) { | |
2195 | goto error; | |
2196 | } | |
2a6f78e0 | 2197 | connmgr_send_port_status(p->connmgr, NULL, pp, OFPPR_ADD); |
abe529af BP |
2198 | return; |
2199 | ||
2200 | error: | |
2201 | VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)", | |
10a89ef0 | 2202 | p->name, netdev_name, ovs_strerror(error)); |
abe529af BP |
2203 | if (ofport) { |
2204 | ofport_destroy__(ofport); | |
2205 | } else { | |
2206 | netdev_close(netdev); | |
72b06300 | 2207 | } |
064af421 BP |
2208 | } |
2209 | ||
b33951b8 | 2210 | /* Removes 'ofport' from 'p' and destroys it. */ |
064af421 | 2211 | static void |
0f7d71a5 | 2212 | ofport_remove(struct ofport *ofport) |
064af421 | 2213 | { |
2a6f78e0 | 2214 | connmgr_send_port_status(ofport->ofproto->connmgr, NULL, &ofport->pp, |
fa066f01 | 2215 | OFPPR_DELETE); |
abe529af | 2216 | ofport_destroy(ofport); |
b33951b8 BP |
2217 | } |
2218 | ||
2219 | /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and | |
2220 | * destroys it. */ | |
2221 | static void | |
2222 | ofport_remove_with_name(struct ofproto *ofproto, const char *name) | |
2223 | { | |
2224 | struct ofport *port = shash_find_data(&ofproto->port_by_name, name); | |
2225 | if (port) { | |
0f7d71a5 | 2226 | ofport_remove(port); |
b33951b8 BP |
2227 | } |
2228 | } | |
2229 | ||
9e1fd49b | 2230 | /* Updates 'port' with new 'pp' description. |
b33951b8 BP |
2231 | * |
2232 | * Does not handle a name or port number change. The caller must implement | |
2233 | * such a change as a delete followed by an add. */ | |
2234 | static void | |
9e1fd49b | 2235 | ofport_modified(struct ofport *port, struct ofputil_phy_port *pp) |
b33951b8 | 2236 | { |
9e1fd49b BP |
2237 | memcpy(port->pp.hw_addr, pp->hw_addr, ETH_ADDR_LEN); |
2238 | port->pp.config = ((port->pp.config & ~OFPUTIL_PC_PORT_DOWN) | |
2239 | | (pp->config & OFPUTIL_PC_PORT_DOWN)); | |
53fd5c7c BP |
2240 | port->pp.state = ((port->pp.state & ~OFPUTIL_PS_LINK_DOWN) |
2241 | | (pp->state & OFPUTIL_PS_LINK_DOWN)); | |
9e1fd49b BP |
2242 | port->pp.curr = pp->curr; |
2243 | port->pp.advertised = pp->advertised; | |
2244 | port->pp.supported = pp->supported; | |
2245 | port->pp.peer = pp->peer; | |
2246 | port->pp.curr_speed = pp->curr_speed; | |
2247 | port->pp.max_speed = pp->max_speed; | |
b33951b8 | 2248 | |
2a6f78e0 BP |
2249 | connmgr_send_port_status(port->ofproto->connmgr, NULL, |
2250 | &port->pp, OFPPR_MODIFY); | |
064af421 BP |
2251 | } |
2252 | ||
5a2dfd47 JP |
2253 | /* Update OpenFlow 'state' in 'port' and notify controller. */ |
2254 | void | |
9e1fd49b | 2255 | ofproto_port_set_state(struct ofport *port, enum ofputil_port_state state) |
5a2dfd47 | 2256 | { |
9e1fd49b BP |
2257 | if (port->pp.state != state) { |
2258 | port->pp.state = state; | |
2a6f78e0 BP |
2259 | connmgr_send_port_status(port->ofproto->connmgr, NULL, |
2260 | &port->pp, OFPPR_MODIFY); | |
5a2dfd47 JP |
2261 | } |
2262 | } | |
2263 | ||
abe529af | 2264 | void |
4e022ec0 | 2265 | ofproto_port_unregister(struct ofproto *ofproto, ofp_port_t ofp_port) |
e7934396 | 2266 | { |
abe529af BP |
2267 | struct ofport *port = ofproto_get_port(ofproto, ofp_port); |
2268 | if (port) { | |
52a90c29 BP |
2269 | if (port->ofproto->ofproto_class->set_realdev) { |
2270 | port->ofproto->ofproto_class->set_realdev(port, 0, 0); | |
2271 | } | |
b308140a JP |
2272 | if (port->ofproto->ofproto_class->set_stp_port) { |
2273 | port->ofproto->ofproto_class->set_stp_port(port, NULL); | |
2274 | } | |
9efd308e DV |
2275 | if (port->ofproto->ofproto_class->set_rstp_port) { |
2276 | port->ofproto->ofproto_class->set_rstp_port(port, NULL); | |
2277 | } | |
abe529af | 2278 | if (port->ofproto->ofproto_class->set_cfm) { |
a5610457 | 2279 | port->ofproto->ofproto_class->set_cfm(port, NULL); |
abe529af BP |
2280 | } |
2281 | if (port->ofproto->ofproto_class->bundle_remove) { | |
2282 | port->ofproto->ofproto_class->bundle_remove(port); | |
e7934396 BP |
2283 | } |
2284 | } | |
2285 | } | |
2286 | ||
2287 | static void | |
abe529af | 2288 | ofport_destroy__(struct ofport *port) |
e7934396 | 2289 | { |
abe529af BP |
2290 | struct ofproto *ofproto = port->ofproto; |
2291 | const char *name = netdev_get_name(port->netdev); | |
fa066f01 | 2292 | |
abe529af BP |
2293 | hmap_remove(&ofproto->ports, &port->hmap_node); |
2294 | shash_delete(&ofproto->port_by_name, | |
2295 | shash_find(&ofproto->port_by_name, name)); | |
fa066f01 | 2296 | |
abe529af BP |
2297 | netdev_close(port->netdev); |
2298 | ofproto->ofproto_class->port_dealloc(port); | |
e7934396 BP |
2299 | } |
2300 | ||
064af421 | 2301 | static void |
abe529af | 2302 | ofport_destroy(struct ofport *port) |
064af421 | 2303 | { |
fa066f01 | 2304 | if (port) { |
e1b1d06a | 2305 | dealloc_ofp_port(port->ofproto, port->ofp_port); |
abe529af BP |
2306 | port->ofproto->ofproto_class->port_destruct(port); |
2307 | ofport_destroy__(port); | |
2308 | } | |
064af421 BP |
2309 | } |
2310 | ||
abe529af | 2311 | struct ofport * |
4e022ec0 | 2312 | ofproto_get_port(const struct ofproto *ofproto, ofp_port_t ofp_port) |
ca0f572c BP |
2313 | { |
2314 | struct ofport *port; | |
2315 | ||
f9c0c3ec | 2316 | HMAP_FOR_EACH_IN_BUCKET (port, hmap_node, hash_ofp_port(ofp_port), |
4e022ec0 | 2317 | &ofproto->ports) { |
abe529af | 2318 | if (port->ofp_port == ofp_port) { |
ca0f572c BP |
2319 | return port; |
2320 | } | |
2321 | } | |
2322 | return NULL; | |
2323 | } | |
2324 | ||
fdcea803 GS |
2325 | static long long int |
2326 | ofport_get_usage(const struct ofproto *ofproto, ofp_port_t ofp_port) | |
2327 | { | |
2328 | struct ofport_usage *usage; | |
2329 | ||
2330 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2331 | &ofproto->ofport_usage) { | |
2332 | if (usage->ofp_port == ofp_port) { | |
2333 | return usage->last_used; | |
2334 | } | |
2335 | } | |
2336 | return 0; | |
2337 | } | |
2338 | ||
2339 | static void | |
2340 | ofport_set_usage(struct ofproto *ofproto, ofp_port_t ofp_port, | |
2341 | long long int last_used) | |
2342 | { | |
2343 | struct ofport_usage *usage; | |
2344 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2345 | &ofproto->ofport_usage) { | |
2346 | if (usage->ofp_port == ofp_port) { | |
2347 | usage->last_used = last_used; | |
2348 | return; | |
2349 | } | |
2350 | } | |
2351 | ovs_assert(last_used == LLONG_MAX); | |
2352 | ||
2353 | usage = xmalloc(sizeof *usage); | |
2354 | usage->ofp_port = ofp_port; | |
2355 | usage->last_used = last_used; | |
2356 | hmap_insert(&ofproto->ofport_usage, &usage->hmap_node, | |
2357 | hash_ofp_port(ofp_port)); | |
2358 | } | |
2359 | ||
865b26a4 GS |
2360 | static void |
2361 | ofport_remove_usage(struct ofproto *ofproto, ofp_port_t ofp_port) | |
2362 | { | |
2363 | struct ofport_usage *usage; | |
2364 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2365 | &ofproto->ofport_usage) { | |
2366 | if (usage->ofp_port == ofp_port) { | |
2367 | hmap_remove(&ofproto->ofport_usage, &usage->hmap_node); | |
2368 | free(usage); | |
2369 | break; | |
2370 | } | |
2371 | } | |
2372 | } | |
2373 | ||
6527c598 PS |
2374 | int |
2375 | ofproto_port_get_stats(const struct ofport *port, struct netdev_stats *stats) | |
2376 | { | |
2377 | struct ofproto *ofproto = port->ofproto; | |
2378 | int error; | |
2379 | ||
2380 | if (ofproto->ofproto_class->port_get_stats) { | |
2381 | error = ofproto->ofproto_class->port_get_stats(port, stats); | |
2382 | } else { | |
2383 | error = EOPNOTSUPP; | |
2384 | } | |
2385 | ||
2386 | return error; | |
2387 | } | |
2388 | ||
064af421 | 2389 | static void |
b33951b8 | 2390 | update_port(struct ofproto *ofproto, const char *name) |
064af421 | 2391 | { |
abe529af | 2392 | struct ofproto_port ofproto_port; |
9e1fd49b | 2393 | struct ofputil_phy_port pp; |
b33951b8 BP |
2394 | struct netdev *netdev; |
2395 | struct ofport *port; | |
064af421 BP |
2396 | |
2397 | COVERAGE_INC(ofproto_update_port); | |
c874dc6d | 2398 | |
b33951b8 | 2399 | /* Fetch 'name''s location and properties from the datapath. */ |
abe529af | 2400 | netdev = (!ofproto_port_query_by_name(ofproto, name, &ofproto_port) |
fbfa2911 | 2401 | ? ofport_open(ofproto, &ofproto_port, &pp) |
b33951b8 | 2402 | : NULL); |
4e022ec0 | 2403 | |
b33951b8 | 2404 | if (netdev) { |
abe529af | 2405 | port = ofproto_get_port(ofproto, ofproto_port.ofp_port); |
b33951b8 | 2406 | if (port && !strcmp(netdev_get_name(port->netdev), name)) { |
e65942a0 BP |
2407 | struct netdev *old_netdev = port->netdev; |
2408 | ||
b33951b8 | 2409 | /* 'name' hasn't changed location. Any properties changed? */ |
9e1fd49b BP |
2410 | if (!ofport_equal(&port->pp, &pp)) { |
2411 | ofport_modified(port, &pp); | |
abe529af BP |
2412 | } |
2413 | ||
ada3428f | 2414 | update_mtu(ofproto, port); |
9197df76 | 2415 | |
e65942a0 BP |
2416 | /* Install the newly opened netdev in case it has changed. |
2417 | * Don't close the old netdev yet in case port_modified has to | |
2418 | * remove a retained reference to it.*/ | |
abe529af | 2419 | port->netdev = netdev; |
61501798 | 2420 | port->change_seq = netdev_get_change_seq(netdev); |
abe529af BP |
2421 | |
2422 | if (port->ofproto->ofproto_class->port_modified) { | |
2423 | port->ofproto->ofproto_class->port_modified(port); | |
b33951b8 | 2424 | } |
e65942a0 BP |
2425 | |
2426 | netdev_close(old_netdev); | |
b33951b8 BP |
2427 | } else { |
2428 | /* If 'port' is nonnull then its name differs from 'name' and thus | |
2429 | * we should delete it. If we think there's a port named 'name' | |
2430 | * then its port number must be wrong now so delete it too. */ | |
2431 | if (port) { | |
0f7d71a5 | 2432 | ofport_remove(port); |
b33951b8 BP |
2433 | } |
2434 | ofport_remove_with_name(ofproto, name); | |
9e1fd49b | 2435 | ofport_install(ofproto, netdev, &pp); |
c874dc6d | 2436 | } |
b33951b8 BP |
2437 | } else { |
2438 | /* Any port named 'name' is gone now. */ | |
2439 | ofport_remove_with_name(ofproto, name); | |
c874dc6d | 2440 | } |
abe529af | 2441 | ofproto_port_destroy(&ofproto_port); |
064af421 BP |
2442 | } |
2443 | ||
2444 | static int | |
2445 | init_ports(struct ofproto *p) | |
2446 | { | |
abe529af BP |
2447 | struct ofproto_port_dump dump; |
2448 | struct ofproto_port ofproto_port; | |
e1b1d06a | 2449 | struct shash_node *node, *next; |
abe529af BP |
2450 | |
2451 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { | |
e1b1d06a JP |
2452 | const char *name = ofproto_port.name; |
2453 | ||
2454 | if (shash_find(&p->port_by_name, name)) { | |
fbfa2911 | 2455 | VLOG_WARN_RL(&rl, "%s: ignoring duplicate device %s in datapath", |
e1b1d06a | 2456 | p->name, name); |
abe529af | 2457 | } else { |
9e1fd49b | 2458 | struct ofputil_phy_port pp; |
b33951b8 BP |
2459 | struct netdev *netdev; |
2460 | ||
e1b1d06a JP |
2461 | /* Check if an OpenFlow port number had been requested. */ |
2462 | node = shash_find(&init_ofp_ports, name); | |
2463 | if (node) { | |
2464 | const struct iface_hint *iface_hint = node->data; | |
4e022ec0 AW |
2465 | simap_put(&p->ofp_requests, name, |
2466 | ofp_to_u16(iface_hint->ofp_port)); | |
e1b1d06a JP |
2467 | } |
2468 | ||
fbfa2911 | 2469 | netdev = ofport_open(p, &ofproto_port, &pp); |
b33951b8 | 2470 | if (netdev) { |
9e1fd49b | 2471 | ofport_install(p, netdev, &pp); |
430dbb14 | 2472 | if (ofp_to_u16(ofproto_port.ofp_port) < p->max_ports) { |
7c35397c | 2473 | p->alloc_port_no = MAX(p->alloc_port_no, |
430dbb14 | 2474 | ofp_to_u16(ofproto_port.ofp_port)); |
7c35397c | 2475 | } |
064af421 BP |
2476 | } |
2477 | } | |
2478 | } | |
b0ec0f27 | 2479 | |
e1b1d06a | 2480 | SHASH_FOR_EACH_SAFE(node, next, &init_ofp_ports) { |
4f9e08a5 | 2481 | struct iface_hint *iface_hint = node->data; |
e1b1d06a JP |
2482 | |
2483 | if (!strcmp(iface_hint->br_name, p->name)) { | |
2484 | free(iface_hint->br_name); | |
2485 | free(iface_hint->br_type); | |
4f9e08a5 | 2486 | free(iface_hint); |
e1b1d06a JP |
2487 | shash_delete(&init_ofp_ports, node); |
2488 | } | |
2489 | } | |
2490 | ||
064af421 BP |
2491 | return 0; |
2492 | } | |
9197df76 JP |
2493 | |
2494 | /* Find the minimum MTU of all non-datapath devices attached to 'p'. | |
2495 | * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */ | |
2496 | static int | |
2497 | find_min_mtu(struct ofproto *p) | |
2498 | { | |
2499 | struct ofport *ofport; | |
2500 | int mtu = 0; | |
2501 | ||
2502 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2503 | struct netdev *netdev = ofport->netdev; | |
2504 | int dev_mtu; | |
2505 | ||
2506 | /* Skip any internal ports, since that's what we're trying to | |
2507 | * set. */ | |
2508 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
2509 | continue; | |
2510 | } | |
2511 | ||
2512 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2513 | continue; | |
2514 | } | |
2515 | if (!mtu || dev_mtu < mtu) { | |
2516 | mtu = dev_mtu; | |
2517 | } | |
2518 | } | |
2519 | ||
2520 | return mtu ? mtu: ETH_PAYLOAD_MAX; | |
2521 | } | |
2522 | ||
ada3428f PS |
2523 | /* Update MTU of all datapath devices on 'p' to the minimum of the |
2524 | * non-datapath ports in event of 'port' added or changed. */ | |
9197df76 | 2525 | static void |
ada3428f | 2526 | update_mtu(struct ofproto *p, struct ofport *port) |
9197df76 JP |
2527 | { |
2528 | struct ofport *ofport; | |
ada3428f PS |
2529 | struct netdev *netdev = port->netdev; |
2530 | int dev_mtu, old_min; | |
2531 | ||
2532 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2533 | port->mtu = 0; | |
2534 | return; | |
2535 | } | |
2536 | if (!strcmp(netdev_get_type(port->netdev), "internal")) { | |
2537 | if (dev_mtu > p->min_mtu) { | |
2538 | if (!netdev_set_mtu(port->netdev, p->min_mtu)) { | |
2539 | dev_mtu = p->min_mtu; | |
2540 | } | |
2541 | } | |
2542 | port->mtu = dev_mtu; | |
2543 | return; | |
2544 | } | |
2545 | ||
2546 | /* For non-internal port find new min mtu. */ | |
2547 | old_min = p->min_mtu; | |
2548 | port->mtu = dev_mtu; | |
2549 | p->min_mtu = find_min_mtu(p); | |
2550 | if (p->min_mtu == old_min) { | |
2551 | return; | |
2552 | } | |
9197df76 JP |
2553 | |
2554 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2555 | struct netdev *netdev = ofport->netdev; | |
2556 | ||
2557 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
ada3428f PS |
2558 | if (!netdev_set_mtu(netdev, p->min_mtu)) { |
2559 | ofport->mtu = p->min_mtu; | |
2560 | } | |
9197df76 JP |
2561 | } |
2562 | } | |
2563 | } | |
064af421 | 2564 | \f |
f416c8d6 JR |
2565 | static void |
2566 | ofproto_rule_destroy__(struct rule *rule) | |
2567 | OVS_NO_THREAD_SAFETY_ANALYSIS | |
2568 | { | |
2569 | cls_rule_destroy(CONST_CAST(struct cls_rule *, &rule->cr)); | |
2570 | rule_actions_destroy(rule_get_actions(rule)); | |
2571 | ovs_mutex_destroy(&rule->mutex); | |
2572 | rule->ofproto->ofproto_class->rule_dealloc(rule); | |
2573 | } | |
2574 | ||
2575 | static void | |
2576 | rule_destroy_cb(struct rule *rule) | |
2577 | { | |
2578 | rule->ofproto->ofproto_class->rule_destruct(rule); | |
2579 | ofproto_rule_destroy__(rule); | |
2580 | } | |
2581 | ||
a2143702 BP |
2582 | void |
2583 | ofproto_rule_ref(struct rule *rule) | |
064af421 | 2584 | { |
1eae3d33 | 2585 | if (rule) { |
37bec3d3 | 2586 | ovs_refcount_ref(&rule->ref_count); |
a2143702 BP |
2587 | } |
2588 | } | |
2589 | ||
f5d16e55 JR |
2590 | bool |
2591 | ofproto_rule_try_ref(struct rule *rule) | |
2592 | { | |
2593 | if (rule) { | |
2594 | return ovs_refcount_try_ref_rcu(&rule->ref_count); | |
2595 | } | |
2596 | return false; | |
2597 | } | |
2598 | ||
f416c8d6 JR |
2599 | /* Decrements 'rule''s ref_count and schedules 'rule' to be destroyed if the |
2600 | * ref_count reaches 0. | |
2601 | * | |
2602 | * Use of RCU allows short term use (between RCU quiescent periods) without | |
2603 | * keeping a reference. A reference must be taken if the rule needs to | |
2604 | * stay around accross the RCU quiescent periods. */ | |
a2143702 BP |
2605 | void |
2606 | ofproto_rule_unref(struct rule *rule) | |
2607 | { | |
24f83812 | 2608 | if (rule && ovs_refcount_unref_relaxed(&rule->ref_count) == 1) { |
f416c8d6 | 2609 | ovsrcu_postpone(rule_destroy_cb, rule); |
1eae3d33 | 2610 | } |
064af421 BP |
2611 | } |
2612 | ||
809c7548 RW |
2613 | void |
2614 | ofproto_group_ref(struct ofgroup *group) | |
2615 | { | |
2616 | if (group) { | |
2617 | ovs_refcount_ref(&group->ref_count); | |
2618 | } | |
2619 | } | |
2620 | ||
2621 | void | |
2622 | ofproto_group_unref(struct ofgroup *group) | |
2623 | { | |
2624 | if (group && ovs_refcount_unref(&group->ref_count) == 1) { | |
2625 | group->ofproto->ofproto_class->group_destruct(group); | |
2626 | ofputil_bucket_list_destroy(&group->buckets); | |
2627 | group->ofproto->ofproto_class->group_dealloc(group); | |
2628 | } | |
2629 | } | |
2630 | ||
65efd2ab JR |
2631 | static uint32_t get_provider_meter_id(const struct ofproto *, |
2632 | uint32_t of_meter_id); | |
2633 | ||
dc723c44 JR |
2634 | /* Creates and returns a new 'struct rule_actions', whose actions are a copy |
2635 | * of from the 'ofpacts_len' bytes of 'ofpacts'. */ | |
2636 | const struct rule_actions * | |
4c7562c5 | 2637 | rule_actions_create(const struct ofpact *ofpacts, size_t ofpacts_len) |
6f00e29b BP |
2638 | { |
2639 | struct rule_actions *actions; | |
2640 | ||
dc723c44 | 2641 | actions = xmalloc(sizeof *actions + ofpacts_len); |
6f00e29b | 2642 | actions->ofpacts_len = ofpacts_len; |
4c7562c5 | 2643 | actions->has_meter = ofpacts_get_meter(ofpacts, ofpacts_len) != 0; |
dc723c44 | 2644 | memcpy(actions->ofpacts, ofpacts, ofpacts_len); |
65efd2ab | 2645 | |
35f48b8b BP |
2646 | actions->has_learn_with_delete = (next_learn_with_delete(actions, NULL) |
2647 | != NULL); | |
2648 | ||
6f00e29b BP |
2649 | return actions; |
2650 | } | |
2651 | ||
dc723c44 | 2652 | /* Free the actions after the RCU quiescent period is reached. */ |
6f00e29b | 2653 | void |
dc723c44 | 2654 | rule_actions_destroy(const struct rule_actions *actions) |
6f00e29b | 2655 | { |
06a0f3e2 | 2656 | if (actions) { |
dc723c44 | 2657 | ovsrcu_postpone(free, CONST_CAST(struct rule_actions *, actions)); |
6f00e29b BP |
2658 | } |
2659 | } | |
2660 | ||
bcf84111 | 2661 | /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action |
f25d0cf3 | 2662 | * that outputs to 'port' (output to OFPP_FLOOD and OFPP_ALL doesn't count). */ |
cdbdeeda | 2663 | bool |
4e022ec0 | 2664 | ofproto_rule_has_out_port(const struct rule *rule, ofp_port_t port) |
15aaf599 | 2665 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 2666 | { |
06a0f3e2 BP |
2667 | if (port == OFPP_ANY) { |
2668 | return true; | |
2669 | } else { | |
2670 | const struct rule_actions *actions = rule_get_actions(rule); | |
2671 | return ofpacts_output_to_port(actions->ofpacts, | |
2672 | actions->ofpacts_len, port); | |
2673 | } | |
064af421 BP |
2674 | } |
2675 | ||
7395c052 | 2676 | /* Returns true if 'rule' has group and equals group_id. */ |
74e79b7c | 2677 | static bool |
7395c052 | 2678 | ofproto_rule_has_out_group(const struct rule *rule, uint32_t group_id) |
15aaf599 | 2679 | OVS_REQUIRES(ofproto_mutex) |
7395c052 | 2680 | { |
06a0f3e2 BP |
2681 | if (group_id == OFPG_ANY) { |
2682 | return true; | |
2683 | } else { | |
2684 | const struct rule_actions *actions = rule_get_actions(rule); | |
2685 | return ofpacts_output_to_group(actions->ofpacts, | |
2686 | actions->ofpacts_len, group_id); | |
2687 | } | |
7395c052 NZ |
2688 | } |
2689 | ||
35412852 BP |
2690 | static void |
2691 | rule_execute_destroy(struct rule_execute *e) | |
eedc0097 | 2692 | { |
35412852 BP |
2693 | ofproto_rule_unref(e->rule); |
2694 | list_remove(&e->list_node); | |
2695 | free(e); | |
2696 | } | |
eedc0097 | 2697 | |
35412852 BP |
2698 | /* Executes all "rule_execute" operations queued up in ofproto->rule_executes, |
2699 | * by passing them to the ofproto provider. */ | |
2700 | static void | |
2701 | run_rule_executes(struct ofproto *ofproto) | |
15aaf599 | 2702 | OVS_EXCLUDED(ofproto_mutex) |
35412852 BP |
2703 | { |
2704 | struct rule_execute *e, *next; | |
2705 | struct list executes; | |
2706 | ||
2707 | guarded_list_pop_all(&ofproto->rule_executes, &executes); | |
2708 | LIST_FOR_EACH_SAFE (e, next, list_node, &executes) { | |
35412852 BP |
2709 | struct flow flow; |
2710 | ||
b5e7e61a AZ |
2711 | flow_extract(e->packet, NULL, &flow); |
2712 | flow.in_port.ofp_port = e->in_port; | |
35412852 BP |
2713 | ofproto->ofproto_class->rule_execute(e->rule, &flow, e->packet); |
2714 | ||
2715 | rule_execute_destroy(e); | |
2716 | } | |
2717 | } | |
2718 | ||
2719 | /* Destroys and discards all "rule_execute" operations queued up in | |
2720 | * ofproto->rule_executes. */ | |
2721 | static void | |
2722 | destroy_rule_executes(struct ofproto *ofproto) | |
2723 | { | |
2724 | struct rule_execute *e, *next; | |
2725 | struct list executes; | |
2726 | ||
2727 | guarded_list_pop_all(&ofproto->rule_executes, &executes); | |
2728 | LIST_FOR_EACH_SAFE (e, next, list_node, &executes) { | |
2729 | ofpbuf_delete(e->packet); | |
2730 | rule_execute_destroy(e); | |
2731 | } | |
350a665f BP |
2732 | } |
2733 | ||
adcf00ba | 2734 | static bool |
834fe5cb | 2735 | rule_is_readonly(const struct rule *rule) |
5c67e4af | 2736 | { |
834fe5cb BP |
2737 | const struct oftable *table = &rule->ofproto->tables[rule->table_id]; |
2738 | return (table->flags & OFTABLE_READONLY) != 0; | |
5c67e4af | 2739 | } |
fa066f01 | 2740 | \f |
35f48b8b BP |
2741 | static uint32_t |
2742 | hash_learned_cookie(ovs_be64 cookie_, uint8_t table_id) | |
2743 | { | |
2744 | uint64_t cookie = (OVS_FORCE uint64_t) cookie_; | |
2745 | return hash_3words(cookie, cookie >> 32, table_id); | |
2746 | } | |
2747 | ||
2748 | static void | |
2749 | learned_cookies_update_one__(struct ofproto *ofproto, | |
2750 | const struct ofpact_learn *learn, | |
2751 | int delta, struct list *dead_cookies) | |
2752 | OVS_REQUIRES(ofproto_mutex) | |
2753 | { | |
2754 | uint32_t hash = hash_learned_cookie(learn->cookie, learn->table_id); | |
2755 | struct learned_cookie *c; | |
2756 | ||
2757 | HMAP_FOR_EACH_WITH_HASH (c, u.hmap_node, hash, &ofproto->learned_cookies) { | |
2758 | if (c->cookie == learn->cookie && c->table_id == learn->table_id) { | |
2759 | c->n += delta; | |
2760 | ovs_assert(c->n >= 0); | |
2761 | ||
2762 | if (!c->n) { | |
2763 | hmap_remove(&ofproto->learned_cookies, &c->u.hmap_node); | |
2764 | list_push_back(dead_cookies, &c->u.list_node); | |
2765 | } | |
2766 | ||
2767 | return; | |
2768 | } | |
2769 | } | |
2770 | ||
2771 | ovs_assert(delta > 0); | |
2772 | c = xmalloc(sizeof *c); | |
2773 | hmap_insert(&ofproto->learned_cookies, &c->u.hmap_node, hash); | |
2774 | c->cookie = learn->cookie; | |
2775 | c->table_id = learn->table_id; | |
2776 | c->n = delta; | |
2777 | } | |
2778 | ||
2779 | static const struct ofpact_learn * | |
2780 | next_learn_with_delete(const struct rule_actions *actions, | |
2781 | const struct ofpact_learn *start) | |
2782 | { | |
2783 | const struct ofpact *pos; | |
2784 | ||
2785 | for (pos = start ? ofpact_next(&start->ofpact) : actions->ofpacts; | |
2786 | pos < ofpact_end(actions->ofpacts, actions->ofpacts_len); | |
2787 | pos = ofpact_next(pos)) { | |
2788 | if (pos->type == OFPACT_LEARN) { | |
2789 | const struct ofpact_learn *learn = ofpact_get_LEARN(pos); | |
2790 | if (learn->flags & NX_LEARN_F_DELETE_LEARNED) { | |
2791 | return learn; | |
2792 | } | |
2793 | } | |
2794 | } | |
2795 | ||
2796 | return NULL; | |
2797 | } | |
2798 | ||
2799 | static void | |
2800 | learned_cookies_update__(struct ofproto *ofproto, | |
2801 | const struct rule_actions *actions, | |
2802 | int delta, struct list *dead_cookies) | |
2803 | OVS_REQUIRES(ofproto_mutex) | |
2804 | { | |
2805 | if (actions->has_learn_with_delete) { | |
2806 | const struct ofpact_learn *learn; | |
2807 | ||
2808 | for (learn = next_learn_with_delete(actions, NULL); learn; | |
2809 | learn = next_learn_with_delete(actions, learn)) { | |
2810 | learned_cookies_update_one__(ofproto, learn, delta, dead_cookies); | |
2811 | } | |
2812 | } | |
2813 | } | |
2814 | ||
2815 | static void | |
2816 | learned_cookies_inc(struct ofproto *ofproto, | |
2817 | const struct rule_actions *actions) | |
2818 | OVS_REQUIRES(ofproto_mutex) | |
2819 | { | |
2820 | learned_cookies_update__(ofproto, actions, +1, NULL); | |
2821 | } | |
2822 | ||
2823 | static void | |
2824 | learned_cookies_dec(struct ofproto *ofproto, | |
2825 | const struct rule_actions *actions, | |
2826 | struct list *dead_cookies) | |
2827 | OVS_REQUIRES(ofproto_mutex) | |
2828 | { | |
2829 | learned_cookies_update__(ofproto, actions, -1, dead_cookies); | |
2830 | } | |
2831 | ||
2832 | static void | |
2833 | learned_cookies_flush(struct ofproto *ofproto, struct list *dead_cookies) | |
2834 | OVS_REQUIRES(ofproto_mutex) | |
2835 | { | |
2836 | struct learned_cookie *c, *next; | |
2837 | ||
2838 | LIST_FOR_EACH_SAFE (c, next, u.list_node, dead_cookies) { | |
2839 | struct rule_criteria criteria; | |
2840 | struct rule_collection rules; | |
2841 | struct match match; | |
2842 | ||
2843 | match_init_catchall(&match); | |
2844 | rule_criteria_init(&criteria, c->table_id, &match, 0, | |
2845 | c->cookie, OVS_BE64_MAX, OFPP_ANY, OFPG_ANY); | |
2846 | rule_criteria_require_rw(&criteria, false); | |
2847 | collect_rules_loose(ofproto, &criteria, &rules); | |
2848 | delete_flows__(&rules, OFPRR_DELETE, NULL); | |
2849 | rule_criteria_destroy(&criteria); | |
2850 | rule_collection_destroy(&rules); | |
2851 | ||
2852 | list_remove(&c->u.list_node); | |
2853 | free(c); | |
2854 | } | |
2855 | } | |
2856 | \f | |
90bf1e07 | 2857 | static enum ofperr |
d1e2cf21 | 2858 | handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2859 | { |
b0421aa2 | 2860 | ofconn_send_reply(ofconn, make_echo_reply(oh)); |
064af421 | 2861 | return 0; |
064af421 BP |
2862 | } |
2863 | ||
3c1bb396 BP |
2864 | static void |
2865 | query_tables(struct ofproto *ofproto, | |
2866 | struct ofputil_table_features **featuresp, | |
2867 | struct ofputil_table_stats **statsp) | |
2868 | { | |
2869 | struct mf_bitmap rw_fields = MF_BITMAP_INITIALIZER; | |
2870 | struct mf_bitmap match = MF_BITMAP_INITIALIZER; | |
2871 | struct mf_bitmap mask = MF_BITMAP_INITIALIZER; | |
2872 | ||
2873 | struct ofputil_table_features *features; | |
2874 | struct ofputil_table_stats *stats; | |
2875 | int i; | |
2876 | ||
2877 | for (i = 0; i < MFF_N_IDS; i++) { | |
2878 | const struct mf_field *mf = mf_from_id(i); | |
2879 | ||
2880 | if (mf->writable) { | |
2881 | bitmap_set1(rw_fields.bm, i); | |
2882 | } | |
2883 | if (mf->oxm_header || mf->nxm_header) { | |
2884 | bitmap_set1(match.bm, i); | |
2885 | if (mf->maskable == MFM_FULLY) { | |
2886 | bitmap_set1(mask.bm, i); | |
2887 | } | |
2888 | } | |
2889 | } | |
2890 | ||
2891 | features = *featuresp = xcalloc(ofproto->n_tables, sizeof *features); | |
2892 | for (i = 0; i < ofproto->n_tables; i++) { | |
2893 | struct ofputil_table_features *f = &features[i]; | |
2894 | ||
2895 | f->table_id = i; | |
2896 | sprintf(f->name, "table%d", i); | |
2897 | f->metadata_match = OVS_BE64_MAX; | |
2898 | f->metadata_write = OVS_BE64_MAX; | |
afcea9ea | 2899 | atomic_read_relaxed(&ofproto->tables[i].miss_config, &f->miss_config); |
3c1bb396 BP |
2900 | f->max_entries = 1000000; |
2901 | ||
2902 | bitmap_set_multiple(f->nonmiss.next, i + 1, | |
2903 | ofproto->n_tables - (i + 1), true); | |
2904 | f->nonmiss.instructions = (1u << N_OVS_INSTRUCTIONS) - 1; | |
2905 | if (i == ofproto->n_tables - 1) { | |
2906 | f->nonmiss.instructions &= ~(1u << OVSINST_OFPIT11_GOTO_TABLE); | |
2907 | } | |
2908 | f->nonmiss.write.ofpacts = (UINT64_C(1) << N_OFPACTS) - 1; | |
2909 | f->nonmiss.write.set_fields = rw_fields; | |
2910 | f->nonmiss.apply = f->nonmiss.write; | |
2911 | f->miss = f->nonmiss; | |
2912 | ||
2913 | f->match = match; | |
2914 | f->mask = mask; | |
2915 | f->wildcard = match; | |
2916 | } | |
2917 | ||
2918 | if (statsp) { | |
2919 | stats = *statsp = xcalloc(ofproto->n_tables, sizeof *stats); | |
2920 | for (i = 0; i < ofproto->n_tables; i++) { | |
2921 | struct ofputil_table_stats *s = &stats[i]; | |
2922 | struct classifier *cls = &ofproto->tables[i].cls; | |
2923 | ||
2924 | s->table_id = i; | |
2925 | s->active_count = classifier_count(cls); | |
2926 | } | |
2927 | } else { | |
2928 | stats = NULL; | |
2929 | } | |
2930 | ||
2931 | ofproto->ofproto_class->query_tables(ofproto, features, stats); | |
2932 | ||
2933 | for (i = 0; i < ofproto->n_tables; i++) { | |
2934 | const struct oftable *table = &ofproto->tables[i]; | |
2935 | struct ofputil_table_features *f = &features[i]; | |
2936 | ||
2937 | if (table->name) { | |
2938 | ovs_strzcpy(f->name, table->name, sizeof f->name); | |
2939 | } | |
2940 | ||
2941 | if (table->max_flows < f->max_entries) { | |
2942 | f->max_entries = table->max_flows; | |
2943 | } | |
2944 | } | |
2945 | } | |
2946 | ||
2947 | static void | |
2948 | query_switch_features(struct ofproto *ofproto, | |
2949 | bool *arp_match_ip, uint64_t *ofpacts) | |
2950 | { | |
2951 | struct ofputil_table_features *features, *f; | |
2952 | ||
2953 | *arp_match_ip = false; | |
2954 | *ofpacts = 0; | |
2955 | ||
2956 | query_tables(ofproto, &features, NULL); | |
2957 | for (f = features; f < &features[ofproto->n_tables]; f++) { | |
2958 | *ofpacts |= f->nonmiss.apply.ofpacts | f->miss.apply.ofpacts; | |
2959 | if (bitmap_is_set(f->match.bm, MFF_ARP_SPA) || | |
2960 | bitmap_is_set(f->match.bm, MFF_ARP_TPA)) { | |
2961 | *arp_match_ip = true; | |
2962 | } | |
2963 | } | |
2964 | free(features); | |
2965 | ||
2966 | /* Sanity check. */ | |
2967 | ovs_assert(*ofpacts & (UINT64_C(1) << OFPACT_OUTPUT)); | |
2968 | } | |
2969 | ||
90bf1e07 | 2970 | static enum ofperr |
d1e2cf21 | 2971 | handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2972 | { |
64ff1d96 | 2973 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
9e1fd49b | 2974 | struct ofputil_switch_features features; |
064af421 | 2975 | struct ofport *port; |
6c1491fb | 2976 | bool arp_match_ip; |
9e1fd49b | 2977 | struct ofpbuf *b; |
064af421 | 2978 | |
3c1bb396 | 2979 | query_switch_features(ofproto, &arp_match_ip, &features.ofpacts); |
064af421 | 2980 | |
9e1fd49b BP |
2981 | features.datapath_id = ofproto->datapath_id; |
2982 | features.n_buffers = pktbuf_capacity(); | |
adcf00ba | 2983 | features.n_tables = ofproto_get_n_visible_tables(ofproto); |
9e1fd49b BP |
2984 | features.capabilities = (OFPUTIL_C_FLOW_STATS | OFPUTIL_C_TABLE_STATS | |
2985 | OFPUTIL_C_PORT_STATS | OFPUTIL_C_QUEUE_STATS); | |
6c1491fb | 2986 | if (arp_match_ip) { |
9e1fd49b | 2987 | features.capabilities |= OFPUTIL_C_ARP_MATCH_IP; |
6c1491fb | 2988 | } |
2e1ae200 JR |
2989 | /* FIXME: Fill in proper features.auxiliary_id for auxiliary connections */ |
2990 | features.auxiliary_id = 0; | |
9e1fd49b BP |
2991 | b = ofputil_encode_switch_features(&features, ofconn_get_protocol(ofconn), |
2992 | oh->xid); | |
64ff1d96 | 2993 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
9e1fd49b | 2994 | ofputil_put_switch_features_port(&port->pp, b); |
064af421 | 2995 | } |
064af421 | 2996 | |
9e1fd49b | 2997 | ofconn_send_reply(ofconn, b); |
064af421 BP |
2998 | return 0; |
2999 | } | |
064af421 | 3000 | |
90bf1e07 | 3001 | static enum ofperr |
d1e2cf21 | 3002 | handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3003 | { |
64ff1d96 | 3004 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 | 3005 | struct ofp_switch_config *osc; |
f0fd1a17 | 3006 | enum ofp_config_flags flags; |
7257b535 | 3007 | struct ofpbuf *buf; |
959a2ecd | 3008 | |
064af421 | 3009 | /* Send reply. */ |
982697a4 BP |
3010 | buf = ofpraw_alloc_reply(OFPRAW_OFPT_GET_CONFIG_REPLY, oh, 0); |
3011 | osc = ofpbuf_put_uninit(buf, sizeof *osc); | |
f0fd1a17 | 3012 | flags = ofproto->frag_handling; |
2e1ae200 JR |
3013 | /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */ |
3014 | if (oh->version < OFP13_VERSION | |
3015 | && ofconn_get_invalid_ttl_to_controller(ofconn)) { | |
f0fd1a17 PS |
3016 | flags |= OFPC_INVALID_TTL_TO_CONTROLLER; |
3017 | } | |
3018 | osc->flags = htons(flags); | |
810605a2 | 3019 | osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn)); |
b0421aa2 | 3020 | ofconn_send_reply(ofconn, buf); |
2d70a31a | 3021 | |
064af421 BP |
3022 | return 0; |
3023 | } | |
064af421 | 3024 | |
90bf1e07 | 3025 | static enum ofperr |
982697a4 | 3026 | handle_set_config(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3027 | { |
982697a4 | 3028 | const struct ofp_switch_config *osc = ofpmsg_body(oh); |
64ff1d96 | 3029 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
d1e2cf21 | 3030 | uint16_t flags = ntohs(osc->flags); |
2d70a31a | 3031 | |
7257b535 | 3032 | if (ofconn_get_type(ofconn) != OFCONN_PRIMARY |
f4f1ea7e | 3033 | || ofconn_get_role(ofconn) != OFPCR12_ROLE_SLAVE) { |
7257b535 BP |
3034 | enum ofp_config_flags cur = ofproto->frag_handling; |
3035 | enum ofp_config_flags next = flags & OFPC_FRAG_MASK; | |
3036 | ||
cb22974d | 3037 | ovs_assert((cur & OFPC_FRAG_MASK) == cur); |
7257b535 BP |
3038 | if (cur != next) { |
3039 | if (ofproto->ofproto_class->set_frag_handling(ofproto, next)) { | |
3040 | ofproto->frag_handling = next; | |
3041 | } else { | |
3042 | VLOG_WARN_RL(&rl, "%s: unsupported fragment handling mode %s", | |
3043 | ofproto->name, | |
3044 | ofputil_frag_handling_to_string(next)); | |
3045 | } | |
064af421 BP |
3046 | } |
3047 | } | |
2e1ae200 | 3048 | /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */ |
f0fd1a17 | 3049 | ofconn_set_invalid_ttl_to_controller(ofconn, |
2e1ae200 JR |
3050 | (oh->version < OFP13_VERSION |
3051 | && flags & OFPC_INVALID_TTL_TO_CONTROLLER)); | |
ebe482fd | 3052 | |
810605a2 | 3053 | ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len)); |
0ad9b732 | 3054 | |
064af421 | 3055 | return 0; |
064af421 BP |
3056 | } |
3057 | ||
9deba63b | 3058 | /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow |
90bf1e07 BP |
3059 | * error message code for the caller to propagate upward. Otherwise, returns |
3060 | * 0. | |
3061 | * | |
3062 | * The log message mentions 'msg_type'. */ | |
3063 | static enum ofperr | |
3064 | reject_slave_controller(struct ofconn *ofconn) | |
9deba63b | 3065 | { |
1ce0a5fa | 3066 | if (ofconn_get_type(ofconn) == OFCONN_PRIMARY |
f4f1ea7e | 3067 | && ofconn_get_role(ofconn) == OFPCR12_ROLE_SLAVE) { |
90bf1e07 | 3068 | return OFPERR_OFPBRC_EPERM; |
9deba63b BP |
3069 | } else { |
3070 | return 0; | |
3071 | } | |
3072 | } | |
3073 | ||
7e9f8266 BP |
3074 | /* Checks that the 'ofpacts_len' bytes of action in 'ofpacts' are appropriate |
3075 | * for 'ofproto': | |
3076 | * | |
3077 | * - If they use a meter, then 'ofproto' has that meter configured. | |
3078 | * | |
3079 | * - If they use any groups, then 'ofproto' has that group configured. | |
3080 | * | |
3081 | * Returns 0 if successful, otherwise an OpenFlow error. */ | |
9cae45dc JR |
3082 | static enum ofperr |
3083 | ofproto_check_ofpacts(struct ofproto *ofproto, | |
7e9f8266 | 3084 | const struct ofpact ofpacts[], size_t ofpacts_len) |
9cae45dc | 3085 | { |
84d68566 | 3086 | const struct ofpact *a; |
9cae45dc JR |
3087 | uint32_t mid; |
3088 | ||
7e9f8266 BP |
3089 | mid = ofpacts_get_meter(ofpacts, ofpacts_len); |
3090 | if (mid && get_provider_meter_id(ofproto, mid) == UINT32_MAX) { | |
3091 | return OFPERR_OFPMMFC_INVALID_METER; | |
9cae45dc JR |
3092 | } |
3093 | ||
84d68566 | 3094 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
7e9f8266 BP |
3095 | if (a->type == OFPACT_GROUP |
3096 | && !ofproto_group_exists(ofproto, ofpact_get_GROUP(a)->group_id)) { | |
3097 | return OFPERR_OFPBAC_BAD_OUT_GROUP; | |
84d68566 SH |
3098 | } |
3099 | } | |
3100 | ||
9cae45dc JR |
3101 | return 0; |
3102 | } | |
3103 | ||
90bf1e07 | 3104 | static enum ofperr |
982697a4 | 3105 | handle_packet_out(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3106 | { |
64ff1d96 | 3107 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
c6a93eb7 BP |
3108 | struct ofputil_packet_out po; |
3109 | struct ofpbuf *payload; | |
f25d0cf3 BP |
3110 | uint64_t ofpacts_stub[1024 / 8]; |
3111 | struct ofpbuf ofpacts; | |
ae412e7d | 3112 | struct flow flow; |
90bf1e07 | 3113 | enum ofperr error; |
064af421 | 3114 | |
ac51afaf BP |
3115 | COVERAGE_INC(ofproto_packet_out); |
3116 | ||
76589937 | 3117 | error = reject_slave_controller(ofconn); |
9deba63b | 3118 | if (error) { |
f25d0cf3 | 3119 | goto exit; |
9deba63b BP |
3120 | } |
3121 | ||
c6a93eb7 | 3122 | /* Decode message. */ |
f25d0cf3 | 3123 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
982697a4 | 3124 | error = ofputil_decode_packet_out(&po, oh, &ofpacts); |
064af421 | 3125 | if (error) { |
f25d0cf3 | 3126 | goto exit_free_ofpacts; |
064af421 | 3127 | } |
430dbb14 | 3128 | if (ofp_to_u16(po.in_port) >= p->max_ports |
4e022ec0 | 3129 | && ofp_to_u16(po.in_port) < ofp_to_u16(OFPP_MAX)) { |
2e1bfcb6 | 3130 | error = OFPERR_OFPBRC_BAD_PORT; |
91858960 BP |
3131 | goto exit_free_ofpacts; |
3132 | } | |
064af421 | 3133 | |
ac51afaf | 3134 | /* Get payload. */ |
c6a93eb7 BP |
3135 | if (po.buffer_id != UINT32_MAX) { |
3136 | error = ofconn_pktbuf_retrieve(ofconn, po.buffer_id, &payload, NULL); | |
3137 | if (error || !payload) { | |
f25d0cf3 | 3138 | goto exit_free_ofpacts; |
064af421 | 3139 | } |
064af421 | 3140 | } else { |
bb622f82 BP |
3141 | /* Ensure that the L3 header is 32-bit aligned. */ |
3142 | payload = ofpbuf_clone_data_with_headroom(po.packet, po.packet_len, 2); | |
e1154f71 BP |
3143 | } |
3144 | ||
548de4dd | 3145 | /* Verify actions against packet, then send packet if successful. */ |
b5e7e61a AZ |
3146 | flow_extract(payload, NULL, &flow); |
3147 | flow.in_port.ofp_port = po.in_port; | |
7e9f8266 | 3148 | error = ofproto_check_ofpacts(p, po.ofpacts, po.ofpacts_len); |
548de4dd BP |
3149 | if (!error) { |
3150 | error = p->ofproto_class->packet_out(p, payload, &flow, | |
3151 | po.ofpacts, po.ofpacts_len); | |
3152 | } | |
c6a93eb7 | 3153 | ofpbuf_delete(payload); |
abe529af | 3154 | |
f25d0cf3 BP |
3155 | exit_free_ofpacts: |
3156 | ofpbuf_uninit(&ofpacts); | |
3157 | exit: | |
abe529af | 3158 | return error; |
064af421 BP |
3159 | } |
3160 | ||
3161 | static void | |
2a6f78e0 | 3162 | update_port_config(struct ofconn *ofconn, struct ofport *port, |
9e1fd49b BP |
3163 | enum ofputil_port_config config, |
3164 | enum ofputil_port_config mask) | |
064af421 | 3165 | { |
2a6f78e0 | 3166 | enum ofputil_port_config toggle = (config ^ port->pp.config) & mask; |
abe529af | 3167 | |
2a6f78e0 BP |
3168 | if (toggle & OFPUTIL_PC_PORT_DOWN |
3169 | && (config & OFPUTIL_PC_PORT_DOWN | |
3170 | ? netdev_turn_flags_off(port->netdev, NETDEV_UP, NULL) | |
3171 | : netdev_turn_flags_on(port->netdev, NETDEV_UP, NULL))) { | |
3172 | /* We tried to bring the port up or down, but it failed, so don't | |
3173 | * update the "down" bit. */ | |
9e1fd49b | 3174 | toggle &= ~OFPUTIL_PC_PORT_DOWN; |
064af421 | 3175 | } |
abe529af | 3176 | |
2a6f78e0 BP |
3177 | if (toggle) { |
3178 | enum ofputil_port_config old_config = port->pp.config; | |
3179 | port->pp.config ^= toggle; | |
abe529af | 3180 | port->ofproto->ofproto_class->port_reconfigured(port, old_config); |
2a6f78e0 BP |
3181 | connmgr_send_port_status(port->ofproto->connmgr, ofconn, &port->pp, |
3182 | OFPPR_MODIFY); | |
064af421 BP |
3183 | } |
3184 | } | |
3185 | ||
90bf1e07 | 3186 | static enum ofperr |
d1e2cf21 | 3187 | handle_port_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3188 | { |
64ff1d96 | 3189 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
9e1fd49b | 3190 | struct ofputil_port_mod pm; |
064af421 | 3191 | struct ofport *port; |
9e1fd49b | 3192 | enum ofperr error; |
064af421 | 3193 | |
76589937 | 3194 | error = reject_slave_controller(ofconn); |
9deba63b BP |
3195 | if (error) { |
3196 | return error; | |
3197 | } | |
064af421 | 3198 | |
18cc69d9 | 3199 | error = ofputil_decode_port_mod(oh, &pm, false); |
9e1fd49b BP |
3200 | if (error) { |
3201 | return error; | |
3202 | } | |
3203 | ||
3204 | port = ofproto_get_port(p, pm.port_no); | |
064af421 | 3205 | if (!port) { |
90bf1e07 | 3206 | return OFPERR_OFPPMFC_BAD_PORT; |
9e1fd49b | 3207 | } else if (!eth_addr_equals(port->pp.hw_addr, pm.hw_addr)) { |
90bf1e07 | 3208 | return OFPERR_OFPPMFC_BAD_HW_ADDR; |
064af421 | 3209 | } else { |
2a6f78e0 | 3210 | update_port_config(ofconn, port, pm.config, pm.mask); |
9e1fd49b BP |
3211 | if (pm.advertise) { |
3212 | netdev_set_advertisements(port->netdev, pm.advertise); | |
064af421 BP |
3213 | } |
3214 | } | |
3215 | return 0; | |
3216 | } | |
3217 | ||
90bf1e07 | 3218 | static enum ofperr |
3269c562 | 3219 | handle_desc_stats_request(struct ofconn *ofconn, |
982697a4 | 3220 | const struct ofp_header *request) |
064af421 | 3221 | { |
061bfea4 BP |
3222 | static const char *default_mfr_desc = "Nicira, Inc."; |
3223 | static const char *default_hw_desc = "Open vSwitch"; | |
3224 | static const char *default_sw_desc = VERSION; | |
3225 | static const char *default_serial_desc = "None"; | |
3226 | static const char *default_dp_desc = "None"; | |
3227 | ||
64ff1d96 | 3228 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 BP |
3229 | struct ofp_desc_stats *ods; |
3230 | struct ofpbuf *msg; | |
3231 | ||
982697a4 BP |
3232 | msg = ofpraw_alloc_stats_reply(request, 0); |
3233 | ods = ofpbuf_put_zeros(msg, sizeof *ods); | |
061bfea4 BP |
3234 | ovs_strlcpy(ods->mfr_desc, p->mfr_desc ? p->mfr_desc : default_mfr_desc, |
3235 | sizeof ods->mfr_desc); | |
3236 | ovs_strlcpy(ods->hw_desc, p->hw_desc ? p->hw_desc : default_hw_desc, | |
3237 | sizeof ods->hw_desc); | |
3238 | ovs_strlcpy(ods->sw_desc, p->sw_desc ? p->sw_desc : default_sw_desc, | |
3239 | sizeof ods->sw_desc); | |
3240 | ovs_strlcpy(ods->serial_num, | |
3241 | p->serial_desc ? p->serial_desc : default_serial_desc, | |
3242 | sizeof ods->serial_num); | |
3243 | ovs_strlcpy(ods->dp_desc, p->dp_desc ? p->dp_desc : default_dp_desc, | |
3244 | sizeof ods->dp_desc); | |
b0421aa2 | 3245 | ofconn_send_reply(ofconn, msg); |
064af421 BP |
3246 | |
3247 | return 0; | |
3248 | } | |
3249 | ||
90bf1e07 | 3250 | static enum ofperr |
3269c562 | 3251 | handle_table_stats_request(struct ofconn *ofconn, |
982697a4 | 3252 | const struct ofp_header *request) |
064af421 | 3253 | { |
3c1bb396 BP |
3254 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
3255 | struct ofputil_table_features *features; | |
08d1e234 | 3256 | struct ofputil_table_stats *stats; |
3c1bb396 | 3257 | struct ofpbuf *reply; |
6c1491fb | 3258 | size_t i; |
064af421 | 3259 | |
3c1bb396 | 3260 | query_tables(ofproto, &features, &stats); |
254750ce | 3261 | |
3c1bb396 BP |
3262 | reply = ofputil_encode_table_stats_reply(request); |
3263 | for (i = 0; i < ofproto->n_tables; i++) { | |
3264 | if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) { | |
3265 | ofputil_append_table_stats_reply(reply, &stats[i], &features[i]); | |
254750ce BP |
3266 | } |
3267 | } | |
3c1bb396 | 3268 | ofconn_send_reply(ofconn, reply); |
254750ce | 3269 | |
3c1bb396 | 3270 | free(features); |
08d1e234 | 3271 | free(stats); |
307975da | 3272 | |
064af421 BP |
3273 | return 0; |
3274 | } | |
3275 | ||
3c4e10fb BP |
3276 | static enum ofperr |
3277 | handle_table_features_request(struct ofconn *ofconn, | |
3278 | const struct ofp_header *request) | |
3279 | { | |
3280 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
3281 | struct ofputil_table_features *features; | |
3282 | struct list replies; | |
3283 | struct ofpbuf msg; | |
3284 | size_t i; | |
3285 | ||
3286 | ofpbuf_use_const(&msg, request, ntohs(request->length)); | |
3287 | ofpraw_pull_assert(&msg); | |
3288 | if (ofpbuf_size(&msg) || ofpmp_more(request)) { | |
3289 | return OFPERR_OFPTFFC_EPERM; | |
3290 | } | |
3291 | ||
3292 | query_tables(ofproto, &features, NULL); | |
3293 | ||
3294 | ofpmp_init(&replies, request); | |
3295 | for (i = 0; i < ofproto->n_tables; i++) { | |
3296 | if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) { | |
3297 | ofputil_append_table_features_reply(&features[i], &replies); | |
3298 | } | |
3299 | } | |
3300 | ofconn_send_replies(ofconn, &replies); | |
3301 | ||
3302 | free(features); | |
3303 | ||
3304 | return 0; | |
3305 | } | |
3306 | ||
abaad8cf | 3307 | static void |
63f2140a | 3308 | append_port_stat(struct ofport *port, struct list *replies) |
abaad8cf | 3309 | { |
f8e4867e | 3310 | struct ofputil_port_stats ops = { .port_no = port->pp.port_no }; |
abaad8cf | 3311 | |
65e0be10 BP |
3312 | calc_duration(port->created, time_msec(), |
3313 | &ops.duration_sec, &ops.duration_nsec); | |
3314 | ||
d295e8e9 JP |
3315 | /* Intentionally ignore return value, since errors will set |
3316 | * 'stats' to all-1s, which is correct for OpenFlow, and | |
abaad8cf | 3317 | * netdev_get_stats() will log errors. */ |
f8e4867e SH |
3318 | ofproto_port_get_stats(port, &ops.stats); |
3319 | ||
3320 | ofputil_append_port_stat(replies, &ops); | |
abaad8cf JP |
3321 | } |
3322 | ||
70ae4f93 BP |
3323 | static void |
3324 | handle_port_request(struct ofconn *ofconn, | |
3325 | const struct ofp_header *request, ofp_port_t port_no, | |
3326 | void (*cb)(struct ofport *, struct list *replies)) | |
064af421 | 3327 | { |
70ae4f93 | 3328 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 | 3329 | struct ofport *port; |
63f2140a | 3330 | struct list replies; |
064af421 | 3331 | |
982697a4 | 3332 | ofpmp_init(&replies, request); |
7f05e7ab | 3333 | if (port_no != OFPP_ANY) { |
70ae4f93 | 3334 | port = ofproto_get_port(ofproto, port_no); |
abaad8cf | 3335 | if (port) { |
70ae4f93 | 3336 | cb(port, &replies); |
abaad8cf JP |
3337 | } |
3338 | } else { | |
70ae4f93 BP |
3339 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
3340 | cb(port, &replies); | |
abaad8cf | 3341 | } |
064af421 BP |
3342 | } |
3343 | ||
63f2140a | 3344 | ofconn_send_replies(ofconn, &replies); |
70ae4f93 BP |
3345 | } |
3346 | ||
3347 | static enum ofperr | |
3348 | handle_port_stats_request(struct ofconn *ofconn, | |
3349 | const struct ofp_header *request) | |
3350 | { | |
3351 | ofp_port_t port_no; | |
3352 | enum ofperr error; | |
3353 | ||
3354 | error = ofputil_decode_port_stats_request(request, &port_no); | |
3355 | if (!error) { | |
3356 | handle_port_request(ofconn, request, port_no, append_port_stat); | |
3357 | } | |
3358 | return error; | |
3359 | } | |
3360 | ||
3361 | static void | |
3362 | append_port_desc(struct ofport *port, struct list *replies) | |
3363 | { | |
3364 | ofputil_append_port_desc_stats_reply(&port->pp, replies); | |
064af421 BP |
3365 | } |
3366 | ||
2be393ed JP |
3367 | static enum ofperr |
3368 | handle_port_desc_stats_request(struct ofconn *ofconn, | |
982697a4 | 3369 | const struct ofp_header *request) |
2be393ed | 3370 | { |
70ae4f93 BP |
3371 | ofp_port_t port_no; |
3372 | enum ofperr error; | |
2be393ed | 3373 | |
70ae4f93 BP |
3374 | error = ofputil_decode_port_desc_stats_request(request, &port_no); |
3375 | if (!error) { | |
3376 | handle_port_request(ofconn, request, port_no, append_port_desc); | |
2be393ed | 3377 | } |
70ae4f93 | 3378 | return error; |
2be393ed JP |
3379 | } |
3380 | ||
98eaac36 JR |
3381 | static uint32_t |
3382 | hash_cookie(ovs_be64 cookie) | |
3383 | { | |
965607c8 | 3384 | return hash_uint64((OVS_FORCE uint64_t)cookie); |
98eaac36 JR |
3385 | } |
3386 | ||
3387 | static void | |
3388 | cookies_insert(struct ofproto *ofproto, struct rule *rule) | |
2c916028 | 3389 | OVS_REQUIRES(ofproto_mutex) |
98eaac36 JR |
3390 | { |
3391 | hindex_insert(&ofproto->cookies, &rule->cookie_node, | |
3392 | hash_cookie(rule->flow_cookie)); | |
3393 | } | |
3394 | ||
3395 | static void | |
3396 | cookies_remove(struct ofproto *ofproto, struct rule *rule) | |
2c916028 | 3397 | OVS_REQUIRES(ofproto_mutex) |
98eaac36 JR |
3398 | { |
3399 | hindex_remove(&ofproto->cookies, &rule->cookie_node); | |
3400 | } | |
3401 | ||
c6ebb8fb | 3402 | static void |
65e0be10 BP |
3403 | calc_duration(long long int start, long long int now, |
3404 | uint32_t *sec, uint32_t *nsec) | |
c6ebb8fb | 3405 | { |
f27f2134 | 3406 | long long int msecs = now - start; |
588cd7b5 BP |
3407 | *sec = msecs / 1000; |
3408 | *nsec = (msecs % 1000) * (1000 * 1000); | |
3409 | } | |
3410 | ||
48266274 | 3411 | /* Checks whether 'table_id' is 0xff or a valid table ID in 'ofproto'. Returns |
554764d1 SH |
3412 | * true if 'table_id' is OK, false otherwise. */ |
3413 | static bool | |
48266274 BP |
3414 | check_table_id(const struct ofproto *ofproto, uint8_t table_id) |
3415 | { | |
554764d1 | 3416 | return table_id == OFPTT_ALL || table_id < ofproto->n_tables; |
48266274 BP |
3417 | } |
3418 | ||
5c67e4af | 3419 | static struct oftable * |
d4ce8a49 | 3420 | next_visible_table(const struct ofproto *ofproto, uint8_t table_id) |
5c67e4af BP |
3421 | { |
3422 | struct oftable *table; | |
3423 | ||
3424 | for (table = &ofproto->tables[table_id]; | |
3425 | table < &ofproto->tables[ofproto->n_tables]; | |
3426 | table++) { | |
3427 | if (!(table->flags & OFTABLE_HIDDEN)) { | |
3428 | return table; | |
3429 | } | |
3430 | } | |
3431 | ||
3432 | return NULL; | |
3433 | } | |
3434 | ||
d0918789 | 3435 | static struct oftable * |
d4ce8a49 | 3436 | first_matching_table(const struct ofproto *ofproto, uint8_t table_id) |
064af421 | 3437 | { |
6c1491fb | 3438 | if (table_id == 0xff) { |
5c67e4af | 3439 | return next_visible_table(ofproto, 0); |
6c1491fb BP |
3440 | } else if (table_id < ofproto->n_tables) { |
3441 | return &ofproto->tables[table_id]; | |
a02e5331 | 3442 | } else { |
6c1491fb | 3443 | return NULL; |
a02e5331 | 3444 | } |
064af421 BP |
3445 | } |
3446 | ||
d0918789 | 3447 | static struct oftable * |
d4ce8a49 BP |
3448 | next_matching_table(const struct ofproto *ofproto, |
3449 | const struct oftable *table, uint8_t table_id) | |
6c1491fb | 3450 | { |
5c67e4af BP |
3451 | return (table_id == 0xff |
3452 | ? next_visible_table(ofproto, (table - ofproto->tables) + 1) | |
6c1491fb BP |
3453 | : NULL); |
3454 | } | |
3455 | ||
d0918789 | 3456 | /* Assigns TABLE to each oftable, in turn, that matches TABLE_ID in OFPROTO: |
6c1491fb BP |
3457 | * |
3458 | * - If TABLE_ID is 0xff, this iterates over every classifier table in | |
5c67e4af | 3459 | * OFPROTO, skipping tables marked OFTABLE_HIDDEN. |
6c1491fb BP |
3460 | * |
3461 | * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates | |
5c67e4af BP |
3462 | * only once, for that table. (This can be used to access tables marked |
3463 | * OFTABLE_HIDDEN.) | |
6c1491fb | 3464 | * |
48266274 BP |
3465 | * - Otherwise, TABLE_ID isn't valid for OFPROTO, so the loop won't be |
3466 | * entered at all. (Perhaps you should have validated TABLE_ID with | |
3467 | * check_table_id().) | |
6c1491fb BP |
3468 | * |
3469 | * All parameters are evaluated multiple times. | |
3470 | */ | |
d0918789 BP |
3471 | #define FOR_EACH_MATCHING_TABLE(TABLE, TABLE_ID, OFPROTO) \ |
3472 | for ((TABLE) = first_matching_table(OFPROTO, TABLE_ID); \ | |
3473 | (TABLE) != NULL; \ | |
3474 | (TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID)) | |
6c1491fb | 3475 | |
a9b22b7f BP |
3476 | /* Initializes 'criteria' in a straightforward way based on the other |
3477 | * parameters. | |
3478 | * | |
dd51dae2 BP |
3479 | * By default, the criteria include flows that are read-only, on the assumption |
3480 | * that the collected flows won't be modified. Call rule_criteria_require_rw() | |
3481 | * if flows will be modified. | |
3482 | * | |
a9b22b7f BP |
3483 | * For "loose" matching, the 'priority' parameter is unimportant and may be |
3484 | * supplied as 0. */ | |
3485 | static void | |
3486 | rule_criteria_init(struct rule_criteria *criteria, uint8_t table_id, | |
3487 | const struct match *match, unsigned int priority, | |
3488 | ovs_be64 cookie, ovs_be64 cookie_mask, | |
3489 | ofp_port_t out_port, uint32_t out_group) | |
3490 | { | |
3491 | criteria->table_id = table_id; | |
3492 | cls_rule_init(&criteria->cr, match, priority); | |
3493 | criteria->cookie = cookie; | |
3494 | criteria->cookie_mask = cookie_mask; | |
3495 | criteria->out_port = out_port; | |
3496 | criteria->out_group = out_group; | |
dd51dae2 BP |
3497 | |
3498 | /* We ordinarily want to skip hidden rules, but there has to be a way for | |
3499 | * code internal to OVS to modify and delete them, so if the criteria | |
3500 | * specify a priority that can only be for a hidden flow, then allow hidden | |
3501 | * rules to be selected. (This doesn't allow OpenFlow clients to meddle | |
3502 | * with hidden flows because OpenFlow uses only a 16-bit field to specify | |
3503 | * priority.) */ | |
3504 | criteria->include_hidden = priority > UINT16_MAX; | |
3505 | ||
3506 | /* We assume that the criteria are being used to collect flows for reading | |
3507 | * but not modification. Thus, we should collect read-only flows. */ | |
3508 | criteria->include_readonly = true; | |
3509 | } | |
3510 | ||
3511 | /* By default, criteria initialized by rule_criteria_init() will match flows | |
3512 | * that are read-only, on the assumption that the collected flows won't be | |
3513 | * modified. Call this function to match only flows that are be modifiable. | |
3514 | * | |
3515 | * Specify 'can_write_readonly' as false in ordinary circumstances, true if the | |
3516 | * caller has special privileges that allow it to modify even "read-only" | |
3517 | * flows. */ | |
3518 | static void | |
3519 | rule_criteria_require_rw(struct rule_criteria *criteria, | |
3520 | bool can_write_readonly) | |
3521 | { | |
3522 | criteria->include_readonly = can_write_readonly; | |
a9b22b7f BP |
3523 | } |
3524 | ||
3525 | static void | |
3526 | rule_criteria_destroy(struct rule_criteria *criteria) | |
3527 | { | |
3528 | cls_rule_destroy(&criteria->cr); | |
3529 | } | |
3530 | ||
a8e547c1 BP |
3531 | void |
3532 | rule_collection_init(struct rule_collection *rules) | |
3533 | { | |
3534 | rules->rules = rules->stub; | |
3535 | rules->n = 0; | |
3536 | rules->capacity = ARRAY_SIZE(rules->stub); | |
3537 | } | |
3538 | ||
3539 | void | |
3540 | rule_collection_add(struct rule_collection *rules, struct rule *rule) | |
3541 | { | |
3542 | if (rules->n >= rules->capacity) { | |
3543 | size_t old_size, new_size; | |
3544 | ||
3545 | old_size = rules->capacity * sizeof *rules->rules; | |
3546 | rules->capacity *= 2; | |
3547 | new_size = rules->capacity * sizeof *rules->rules; | |
3548 | ||
3549 | if (rules->rules == rules->stub) { | |
3550 | rules->rules = xmalloc(new_size); | |
3551 | memcpy(rules->rules, rules->stub, old_size); | |
3552 | } else { | |
3553 | rules->rules = xrealloc(rules->rules, new_size); | |
3554 | } | |
3555 | } | |
3556 | ||
3557 | rules->rules[rules->n++] = rule; | |
3558 | } | |
3559 | ||
15aaf599 BP |
3560 | void |
3561 | rule_collection_ref(struct rule_collection *rules) | |
3562 | OVS_REQUIRES(ofproto_mutex) | |
3563 | { | |
3564 | size_t i; | |
3565 | ||
3566 | for (i = 0; i < rules->n; i++) { | |
3567 | ofproto_rule_ref(rules->rules[i]); | |
3568 | } | |
3569 | } | |
3570 | ||
3571 | void | |
3572 | rule_collection_unref(struct rule_collection *rules) | |
3573 | { | |
3574 | size_t i; | |
3575 | ||
3576 | for (i = 0; i < rules->n; i++) { | |
3577 | ofproto_rule_unref(rules->rules[i]); | |
3578 | } | |
3579 | } | |
3580 | ||
a8e547c1 BP |
3581 | void |
3582 | rule_collection_destroy(struct rule_collection *rules) | |
3583 | { | |
3584 | if (rules->rules != rules->stub) { | |
3585 | free(rules->rules); | |
3586 | } | |
bfd3dbf6 BP |
3587 | |
3588 | /* Make repeated destruction harmless. */ | |
3589 | rule_collection_init(rules); | |
a8e547c1 BP |
3590 | } |
3591 | ||
dd51dae2 BP |
3592 | /* Checks whether 'rule' matches 'c' and, if so, adds it to 'rules'. This |
3593 | * function verifies most of the criteria in 'c' itself, but the caller must | |
3594 | * check 'c->cr' itself. | |
3595 | * | |
3596 | * Increments '*n_readonly' if 'rule' wasn't added because it's read-only (and | |
b20f4073 BP |
3597 | * 'c' only includes modifiable rules). */ |
3598 | static void | |
a9b22b7f | 3599 | collect_rule(struct rule *rule, const struct rule_criteria *c, |
dd51dae2 | 3600 | struct rule_collection *rules, size_t *n_readonly) |
15aaf599 | 3601 | OVS_REQUIRES(ofproto_mutex) |
6c1d7642 | 3602 | { |
dd51dae2 BP |
3603 | if ((c->table_id == rule->table_id || c->table_id == 0xff) |
3604 | && ofproto_rule_has_out_port(rule, c->out_port) | |
3605 | && ofproto_rule_has_out_group(rule, c->out_group) | |
3606 | && !((rule->flow_cookie ^ c->cookie) & c->cookie_mask) | |
3607 | && (!rule_is_hidden(rule) || c->include_hidden)) { | |
dd51dae2 | 3608 | /* Rule matches all the criteria... */ |
834fe5cb | 3609 | if (!rule_is_readonly(rule) || c->include_readonly) { |
dd51dae2 | 3610 | /* ...add it. */ |
a8e547c1 | 3611 | rule_collection_add(rules, rule); |
dd51dae2 BP |
3612 | } else { |
3613 | /* ...except it's read-only. */ | |
3614 | ++*n_readonly; | |
6c1d7642 | 3615 | } |
6c1d7642 BP |
3616 | } |
3617 | } | |
3618 | ||
a9b22b7f BP |
3619 | /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches |
3620 | * on classifiers rules are done in the "loose" way required for OpenFlow | |
3621 | * OFPFC_MODIFY and OFPFC_DELETE requests. Puts the selected rules on list | |
9ed18e46 BP |
3622 | * 'rules'. |
3623 | * | |
9ed18e46 | 3624 | * Returns 0 on success, otherwise an OpenFlow error code. */ |
90bf1e07 | 3625 | static enum ofperr |
a9b22b7f | 3626 | collect_rules_loose(struct ofproto *ofproto, |
a8e547c1 BP |
3627 | const struct rule_criteria *criteria, |
3628 | struct rule_collection *rules) | |
15aaf599 | 3629 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 3630 | { |
d0918789 | 3631 | struct oftable *table; |
554764d1 | 3632 | enum ofperr error = 0; |
dd51dae2 | 3633 | size_t n_readonly = 0; |
48266274 | 3634 | |
a8e547c1 BP |
3635 | rule_collection_init(rules); |
3636 | ||
554764d1 SH |
3637 | if (!check_table_id(ofproto, criteria->table_id)) { |
3638 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
a8e547c1 | 3639 | goto exit; |
48266274 | 3640 | } |
9ed18e46 | 3641 | |
b8266395 | 3642 | if (criteria->cookie_mask == OVS_BE64_MAX) { |
98eaac36 JR |
3643 | struct rule *rule; |
3644 | ||
a9b22b7f BP |
3645 | HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node, |
3646 | hash_cookie(criteria->cookie), | |
98eaac36 | 3647 | &ofproto->cookies) { |
a9b22b7f | 3648 | if (cls_rule_is_loose_match(&rule->cr, &criteria->cr.match)) { |
b20f4073 | 3649 | collect_rule(rule, criteria, rules, &n_readonly); |
98eaac36 JR |
3650 | } |
3651 | } | |
6c1d7642 | 3652 | } else { |
a9b22b7f | 3653 | FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) { |
6c1d7642 | 3654 | struct rule *rule; |
9ed18e46 | 3655 | |
5f0476ce | 3656 | CLS_FOR_EACH_TARGET (rule, cr, &table->cls, &criteria->cr) { |
b20f4073 | 3657 | collect_rule(rule, criteria, rules, &n_readonly); |
9ed18e46 BP |
3658 | } |
3659 | } | |
3660 | } | |
48d28ac1 | 3661 | |
a8e547c1 | 3662 | exit: |
dd51dae2 BP |
3663 | if (!error && !rules->n && n_readonly) { |
3664 | /* We didn't find any rules to modify. We did find some read-only | |
3665 | * rules that we're not allowed to modify, so report that. */ | |
3666 | error = OFPERR_OFPBRC_EPERM; | |
3667 | } | |
a8e547c1 BP |
3668 | if (error) { |
3669 | rule_collection_destroy(rules); | |
3670 | } | |
48d28ac1 | 3671 | return error; |
9ed18e46 BP |
3672 | } |
3673 | ||
a9b22b7f BP |
3674 | /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches |
3675 | * on classifiers rules are done in the "strict" way required for OpenFlow | |
3676 | * OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests. Puts the selected | |
3677 | * rules on list 'rules'. | |
9ed18e46 | 3678 | * |
9ed18e46 | 3679 | * Returns 0 on success, otherwise an OpenFlow error code. */ |
90bf1e07 | 3680 | static enum ofperr |
a9b22b7f | 3681 | collect_rules_strict(struct ofproto *ofproto, |
a8e547c1 BP |
3682 | const struct rule_criteria *criteria, |
3683 | struct rule_collection *rules) | |
15aaf599 | 3684 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 3685 | { |
d0918789 | 3686 | struct oftable *table; |
dd51dae2 | 3687 | size_t n_readonly = 0; |
554764d1 | 3688 | int error = 0; |
48266274 | 3689 | |
a8e547c1 BP |
3690 | rule_collection_init(rules); |
3691 | ||
554764d1 SH |
3692 | if (!check_table_id(ofproto, criteria->table_id)) { |
3693 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
a8e547c1 | 3694 | goto exit; |
48266274 | 3695 | } |
9ed18e46 | 3696 | |
b8266395 | 3697 | if (criteria->cookie_mask == OVS_BE64_MAX) { |
98eaac36 JR |
3698 | struct rule *rule; |
3699 | ||
a9b22b7f BP |
3700 | HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node, |
3701 | hash_cookie(criteria->cookie), | |
98eaac36 | 3702 | &ofproto->cookies) { |
a9b22b7f | 3703 | if (cls_rule_equal(&rule->cr, &criteria->cr)) { |
b20f4073 | 3704 | collect_rule(rule, criteria, rules, &n_readonly); |
98eaac36 JR |
3705 | } |
3706 | } | |
6c1d7642 | 3707 | } else { |
a9b22b7f | 3708 | FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) { |
6c1d7642 | 3709 | struct rule *rule; |
9ed18e46 | 3710 | |
a9b22b7f BP |
3711 | rule = rule_from_cls_rule(classifier_find_rule_exactly( |
3712 | &table->cls, &criteria->cr)); | |
6c1d7642 | 3713 | if (rule) { |
b20f4073 | 3714 | collect_rule(rule, criteria, rules, &n_readonly); |
9ed18e46 BP |
3715 | } |
3716 | } | |
3717 | } | |
48d28ac1 | 3718 | |
a8e547c1 | 3719 | exit: |
b20f4073 BP |
3720 | if (!error && !rules->n && n_readonly) { |
3721 | /* We didn't find any rules to modify. We did find some read-only | |
3722 | * rules that we're not allowed to modify, so report that. */ | |
3723 | error = OFPERR_OFPBRC_EPERM; | |
3724 | } | |
a8e547c1 BP |
3725 | if (error) { |
3726 | rule_collection_destroy(rules); | |
3727 | } | |
6c1d7642 | 3728 | return error; |
9ed18e46 BP |
3729 | } |
3730 | ||
f27f2134 BP |
3731 | /* Returns 'age_ms' (a duration in milliseconds), converted to seconds and |
3732 | * forced into the range of a uint16_t. */ | |
3733 | static int | |
3734 | age_secs(long long int age_ms) | |
3735 | { | |
3736 | return (age_ms < 0 ? 0 | |
3737 | : age_ms >= UINT16_MAX * 1000 ? UINT16_MAX | |
3738 | : (unsigned int) age_ms / 1000); | |
3739 | } | |
3740 | ||
90bf1e07 | 3741 | static enum ofperr |
63f2140a | 3742 | handle_flow_stats_request(struct ofconn *ofconn, |
982697a4 | 3743 | const struct ofp_header *request) |
15aaf599 | 3744 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 3745 | { |
64ff1d96 | 3746 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 3747 | struct ofputil_flow_stats_request fsr; |
a9b22b7f | 3748 | struct rule_criteria criteria; |
a8e547c1 | 3749 | struct rule_collection rules; |
63f2140a | 3750 | struct list replies; |
90bf1e07 | 3751 | enum ofperr error; |
a8e547c1 | 3752 | size_t i; |
09246b99 | 3753 | |
982697a4 | 3754 | error = ofputil_decode_flow_stats_request(&fsr, request); |
09246b99 BP |
3755 | if (error) { |
3756 | return error; | |
3757 | } | |
3758 | ||
a9b22b7f BP |
3759 | rule_criteria_init(&criteria, fsr.table_id, &fsr.match, 0, fsr.cookie, |
3760 | fsr.cookie_mask, fsr.out_port, fsr.out_group); | |
15aaf599 BP |
3761 | |
3762 | ovs_mutex_lock(&ofproto_mutex); | |
a9b22b7f BP |
3763 | error = collect_rules_loose(ofproto, &criteria, &rules); |
3764 | rule_criteria_destroy(&criteria); | |
15aaf599 BP |
3765 | if (!error) { |
3766 | rule_collection_ref(&rules); | |
3767 | } | |
3768 | ovs_mutex_unlock(&ofproto_mutex); | |
3769 | ||
9ed18e46 BP |
3770 | if (error) { |
3771 | return error; | |
3772 | } | |
5ecc9d81 | 3773 | |
982697a4 | 3774 | ofpmp_init(&replies, request); |
a8e547c1 BP |
3775 | for (i = 0; i < rules.n; i++) { |
3776 | struct rule *rule = rules.rules[i]; | |
f27f2134 | 3777 | long long int now = time_msec(); |
9ed18e46 | 3778 | struct ofputil_flow_stats fs; |
15aaf599 | 3779 | long long int created, used, modified; |
dc723c44 | 3780 | const struct rule_actions *actions; |
15aaf599 | 3781 | enum ofputil_flow_mod_flags flags; |
a3779dbc | 3782 | |
d10976b7 | 3783 | ovs_mutex_lock(&rule->mutex); |
15aaf599 | 3784 | fs.cookie = rule->flow_cookie; |
a3779dbc EJ |
3785 | fs.idle_timeout = rule->idle_timeout; |
3786 | fs.hard_timeout = rule->hard_timeout; | |
15aaf599 | 3787 | created = rule->created; |
15aaf599 | 3788 | modified = rule->modified; |
06a0f3e2 | 3789 | actions = rule_get_actions(rule); |
15aaf599 | 3790 | flags = rule->flags; |
d10976b7 | 3791 | ovs_mutex_unlock(&rule->mutex); |
a3779dbc | 3792 | |
dc437090 JR |
3793 | ofproto->ofproto_class->rule_get_stats(rule, &fs.packet_count, |
3794 | &fs.byte_count, &used); | |
3795 | ||
15aaf599 BP |
3796 | minimatch_expand(&rule->cr.match, &fs.match); |
3797 | fs.table_id = rule->table_id; | |
3798 | calc_duration(created, now, &fs.duration_sec, &fs.duration_nsec); | |
3799 | fs.priority = rule->cr.priority; | |
3800 | fs.idle_age = age_secs(now - used); | |
3801 | fs.hard_age = age_secs(now - modified); | |
15aaf599 BP |
3802 | fs.ofpacts = actions->ofpacts; |
3803 | fs.ofpacts_len = actions->ofpacts_len; | |
3f517bcd | 3804 | |
15aaf599 | 3805 | fs.flags = flags; |
9ed18e46 | 3806 | ofputil_append_flow_stats_reply(&fs, &replies); |
3c4486a5 | 3807 | } |
15aaf599 BP |
3808 | |
3809 | rule_collection_unref(&rules); | |
a8e547c1 BP |
3810 | rule_collection_destroy(&rules); |
3811 | ||
63f2140a | 3812 | ofconn_send_replies(ofconn, &replies); |
5ecc9d81 | 3813 | |
09246b99 BP |
3814 | return 0; |
3815 | } | |
3816 | ||
4f2cad2c | 3817 | static void |
3394b5b6 | 3818 | flow_stats_ds(struct rule *rule, struct ds *results) |
4f2cad2c | 3819 | { |
4f2cad2c | 3820 | uint64_t packet_count, byte_count; |
dc723c44 | 3821 | const struct rule_actions *actions; |
dc437090 | 3822 | long long int created, used; |
4f2cad2c | 3823 | |
dc437090 JR |
3824 | rule->ofproto->ofproto_class->rule_get_stats(rule, &packet_count, |
3825 | &byte_count, &used); | |
4f2cad2c | 3826 | |
15aaf599 | 3827 | ovs_mutex_lock(&rule->mutex); |
06a0f3e2 | 3828 | actions = rule_get_actions(rule); |
15aaf599 BP |
3829 | created = rule->created; |
3830 | ovs_mutex_unlock(&rule->mutex); | |
3831 | ||
6c1491fb BP |
3832 | if (rule->table_id != 0) { |
3833 | ds_put_format(results, "table_id=%"PRIu8", ", rule->table_id); | |
3834 | } | |
15aaf599 | 3835 | ds_put_format(results, "duration=%llds, ", (time_msec() - created) / 1000); |
4f2cad2c JP |
3836 | ds_put_format(results, "n_packets=%"PRIu64", ", packet_count); |
3837 | ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count); | |
cb833cf6 | 3838 | cls_rule_format(&rule->cr, results); |
a5df0e72 | 3839 | ds_put_char(results, ','); |
15aaf599 | 3840 | |
455ecd77 | 3841 | ds_put_cstr(results, "actions="); |
15aaf599 BP |
3842 | ofpacts_format(actions->ofpacts, actions->ofpacts_len, results); |
3843 | ||
4f2cad2c JP |
3844 | ds_put_cstr(results, "\n"); |
3845 | } | |
3846 | ||
d295e8e9 | 3847 | /* Adds a pretty-printed description of all flows to 'results', including |
ee8b231c | 3848 | * hidden flows (e.g., set up by in-band control). */ |
4f2cad2c JP |
3849 | void |
3850 | ofproto_get_all_flows(struct ofproto *p, struct ds *results) | |
3851 | { | |
d0918789 | 3852 | struct oftable *table; |
6c1491fb | 3853 | |
d0918789 | 3854 | OFPROTO_FOR_EACH_TABLE (table, p) { |
6c1491fb | 3855 | struct rule *rule; |
064af421 | 3856 | |
5f0476ce | 3857 | CLS_FOR_EACH (rule, cr, &table->cls) { |
6c1491fb BP |
3858 | flow_stats_ds(rule, results); |
3859 | } | |
064af421 | 3860 | } |
064af421 BP |
3861 | } |
3862 | ||
b5827b24 BP |
3863 | /* Obtains the NetFlow engine type and engine ID for 'ofproto' into |
3864 | * '*engine_type' and '*engine_id', respectively. */ | |
3865 | void | |
3866 | ofproto_get_netflow_ids(const struct ofproto *ofproto, | |
3867 | uint8_t *engine_type, uint8_t *engine_id) | |
3868 | { | |
abe529af | 3869 | ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id); |
b5827b24 BP |
3870 | } |
3871 | ||
8f5514fe AW |
3872 | /* Checks the status change of CFM on 'ofport'. |
3873 | * | |
3874 | * Returns true if 'ofproto_class' does not support 'cfm_status_changed'. */ | |
3875 | bool | |
3876 | ofproto_port_cfm_status_changed(struct ofproto *ofproto, ofp_port_t ofp_port) | |
3877 | { | |
3878 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
3879 | return (ofport && ofproto->ofproto_class->cfm_status_changed | |
3880 | ? ofproto->ofproto_class->cfm_status_changed(ofport) | |
3881 | : true); | |
3882 | } | |
3883 | ||
88bf179a AW |
3884 | /* Checks the status of CFM configured on 'ofp_port' within 'ofproto'. |
3885 | * Returns 0 if the port's CFM status was successfully stored into | |
3886 | * '*status'. Returns positive errno if the port did not have CFM | |
8f5514fe | 3887 | * configured. |
9a9e3786 | 3888 | * |
88bf179a AW |
3889 | * The caller must provide and own '*status', and must free 'status->rmps'. |
3890 | * '*status' is indeterminate if the return value is non-zero. */ | |
3891 | int | |
4e022ec0 | 3892 | ofproto_port_get_cfm_status(const struct ofproto *ofproto, ofp_port_t ofp_port, |
685acfd9 | 3893 | struct cfm_status *status) |
3967a833 MM |
3894 | { |
3895 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
88bf179a AW |
3896 | return (ofport && ofproto->ofproto_class->get_cfm_status |
3897 | ? ofproto->ofproto_class->get_cfm_status(ofport, status) | |
3898 | : EOPNOTSUPP); | |
3967a833 MM |
3899 | } |
3900 | ||
90bf1e07 | 3901 | static enum ofperr |
76c93b22 | 3902 | handle_aggregate_stats_request(struct ofconn *ofconn, |
982697a4 | 3903 | const struct ofp_header *oh) |
15aaf599 | 3904 | OVS_EXCLUDED(ofproto_mutex) |
27d34fce | 3905 | { |
76c93b22 | 3906 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 3907 | struct ofputil_flow_stats_request request; |
76c93b22 | 3908 | struct ofputil_aggregate_stats stats; |
5e9d0469 | 3909 | bool unknown_packets, unknown_bytes; |
a9b22b7f | 3910 | struct rule_criteria criteria; |
a8e547c1 | 3911 | struct rule_collection rules; |
76c93b22 | 3912 | struct ofpbuf *reply; |
90bf1e07 | 3913 | enum ofperr error; |
a8e547c1 | 3914 | size_t i; |
27d34fce | 3915 | |
982697a4 | 3916 | error = ofputil_decode_flow_stats_request(&request, oh); |
76c93b22 BP |
3917 | if (error) { |
3918 | return error; | |
3919 | } | |
5ecc9d81 | 3920 | |
a9b22b7f BP |
3921 | rule_criteria_init(&criteria, request.table_id, &request.match, 0, |
3922 | request.cookie, request.cookie_mask, | |
3923 | request.out_port, request.out_group); | |
15aaf599 BP |
3924 | |
3925 | ovs_mutex_lock(&ofproto_mutex); | |
a9b22b7f BP |
3926 | error = collect_rules_loose(ofproto, &criteria, &rules); |
3927 | rule_criteria_destroy(&criteria); | |
15aaf599 BP |
3928 | if (!error) { |
3929 | rule_collection_ref(&rules); | |
3930 | } | |
3931 | ovs_mutex_unlock(&ofproto_mutex); | |
3932 | ||
9ed18e46 BP |
3933 | if (error) { |
3934 | return error; | |
3935 | } | |
3c4486a5 | 3936 | |
9ed18e46 | 3937 | memset(&stats, 0, sizeof stats); |
5e9d0469 | 3938 | unknown_packets = unknown_bytes = false; |
a8e547c1 BP |
3939 | for (i = 0; i < rules.n; i++) { |
3940 | struct rule *rule = rules.rules[i]; | |
9ed18e46 BP |
3941 | uint64_t packet_count; |
3942 | uint64_t byte_count; | |
dc437090 | 3943 | long long int used; |
5ecc9d81 | 3944 | |
9ed18e46 | 3945 | ofproto->ofproto_class->rule_get_stats(rule, &packet_count, |
dc437090 | 3946 | &byte_count, &used); |
5ecc9d81 | 3947 | |
5e9d0469 BP |
3948 | if (packet_count == UINT64_MAX) { |
3949 | unknown_packets = true; | |
3950 | } else { | |
3951 | stats.packet_count += packet_count; | |
3952 | } | |
3953 | ||
3954 | if (byte_count == UINT64_MAX) { | |
3955 | unknown_bytes = true; | |
3956 | } else { | |
3957 | stats.byte_count += byte_count; | |
3958 | } | |
3959 | ||
9ed18e46 | 3960 | stats.flow_count++; |
3c4486a5 | 3961 | } |
5e9d0469 BP |
3962 | if (unknown_packets) { |
3963 | stats.packet_count = UINT64_MAX; | |
3964 | } | |
3965 | if (unknown_bytes) { | |
3966 | stats.byte_count = UINT64_MAX; | |
3967 | } | |
27d34fce | 3968 | |
15aaf599 | 3969 | rule_collection_unref(&rules); |
a8e547c1 BP |
3970 | rule_collection_destroy(&rules); |
3971 | ||
982697a4 | 3972 | reply = ofputil_encode_aggregate_stats_reply(&stats, oh); |
76c93b22 | 3973 | ofconn_send_reply(ofconn, reply); |
09246b99 BP |
3974 | |
3975 | return 0; | |
3976 | } | |
3977 | ||
c1c9c9c4 | 3978 | struct queue_stats_cbdata { |
ca0f572c | 3979 | struct ofport *ofport; |
63f2140a | 3980 | struct list replies; |
6dc34a0d | 3981 | long long int now; |
c1c9c9c4 BP |
3982 | }; |
3983 | ||
3984 | static void | |
db9220c3 | 3985 | put_queue_stats(struct queue_stats_cbdata *cbdata, uint32_t queue_id, |
c1c9c9c4 BP |
3986 | const struct netdev_queue_stats *stats) |
3987 | { | |
6dc34a0d | 3988 | struct ofputil_queue_stats oqs; |
c1c9c9c4 | 3989 | |
6dc34a0d BP |
3990 | oqs.port_no = cbdata->ofport->pp.port_no; |
3991 | oqs.queue_id = queue_id; | |
3992 | oqs.tx_bytes = stats->tx_bytes; | |
3993 | oqs.tx_packets = stats->tx_packets; | |
3994 | oqs.tx_errors = stats->tx_errors; | |
3995 | if (stats->created != LLONG_MIN) { | |
3996 | calc_duration(stats->created, cbdata->now, | |
3997 | &oqs.duration_sec, &oqs.duration_nsec); | |
3998 | } else { | |
3999 | oqs.duration_sec = oqs.duration_nsec = UINT32_MAX; | |
4000 | } | |
64626975 | 4001 | ofputil_append_queue_stat(&cbdata->replies, &oqs); |
c1c9c9c4 BP |
4002 | } |
4003 | ||
4004 | static void | |
db9220c3 | 4005 | handle_queue_stats_dump_cb(uint32_t queue_id, |
c1c9c9c4 BP |
4006 | struct netdev_queue_stats *stats, |
4007 | void *cbdata_) | |
4008 | { | |
4009 | struct queue_stats_cbdata *cbdata = cbdata_; | |
4010 | ||
4011 | put_queue_stats(cbdata, queue_id, stats); | |
4012 | } | |
4013 | ||
0414d158 | 4014 | static enum ofperr |
ca0f572c | 4015 | handle_queue_stats_for_port(struct ofport *port, uint32_t queue_id, |
c1c9c9c4 BP |
4016 | struct queue_stats_cbdata *cbdata) |
4017 | { | |
ca0f572c | 4018 | cbdata->ofport = port; |
c1c9c9c4 BP |
4019 | if (queue_id == OFPQ_ALL) { |
4020 | netdev_dump_queue_stats(port->netdev, | |
4021 | handle_queue_stats_dump_cb, cbdata); | |
4022 | } else { | |
4023 | struct netdev_queue_stats stats; | |
4024 | ||
1ac788f6 BP |
4025 | if (!netdev_get_queue_stats(port->netdev, queue_id, &stats)) { |
4026 | put_queue_stats(cbdata, queue_id, &stats); | |
0414d158 BP |
4027 | } else { |
4028 | return OFPERR_OFPQOFC_BAD_QUEUE; | |
1ac788f6 | 4029 | } |
c1c9c9c4 | 4030 | } |
0414d158 | 4031 | return 0; |
c1c9c9c4 BP |
4032 | } |
4033 | ||
90bf1e07 | 4034 | static enum ofperr |
63f2140a | 4035 | handle_queue_stats_request(struct ofconn *ofconn, |
982697a4 | 4036 | const struct ofp_header *rq) |
c1c9c9c4 | 4037 | { |
64ff1d96 | 4038 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
c1c9c9c4 | 4039 | struct queue_stats_cbdata cbdata; |
0414d158 | 4040 | struct ofport *port; |
0414d158 | 4041 | enum ofperr error; |
64626975 | 4042 | struct ofputil_queue_stats_request oqsr; |
c1c9c9c4 | 4043 | |
c1c9c9c4 BP |
4044 | COVERAGE_INC(ofproto_queue_req); |
4045 | ||
982697a4 | 4046 | ofpmp_init(&cbdata.replies, rq); |
6dc34a0d | 4047 | cbdata.now = time_msec(); |
c1c9c9c4 | 4048 | |
64626975 SH |
4049 | error = ofputil_decode_queue_stats_request(rq, &oqsr); |
4050 | if (error) { | |
4051 | return error; | |
4052 | } | |
4053 | ||
7f05e7ab | 4054 | if (oqsr.port_no == OFPP_ANY) { |
0414d158 | 4055 | error = OFPERR_OFPQOFC_BAD_QUEUE; |
4e8e4213 | 4056 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
64626975 | 4057 | if (!handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata)) { |
0414d158 BP |
4058 | error = 0; |
4059 | } | |
c1c9c9c4 | 4060 | } |
0414d158 | 4061 | } else { |
64626975 | 4062 | port = ofproto_get_port(ofproto, oqsr.port_no); |
0414d158 | 4063 | error = (port |
64626975 | 4064 | ? handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata) |
0414d158 BP |
4065 | : OFPERR_OFPQOFC_BAD_PORT); |
4066 | } | |
4067 | if (!error) { | |
4068 | ofconn_send_replies(ofconn, &cbdata.replies); | |
c1c9c9c4 | 4069 | } else { |
63f2140a | 4070 | ofpbuf_list_delete(&cbdata.replies); |
c1c9c9c4 | 4071 | } |
c1c9c9c4 | 4072 | |
0414d158 | 4073 | return error; |
c1c9c9c4 | 4074 | } |
7ee20df1 | 4075 | |
2e31a9b8 BP |
4076 | static bool |
4077 | should_evict_a_rule(struct oftable *table, unsigned int extra_space) | |
15aaf599 BP |
4078 | OVS_REQUIRES(ofproto_mutex) |
4079 | OVS_NO_THREAD_SAFETY_ANALYSIS | |
8037acb4 | 4080 | { |
15aaf599 | 4081 | return classifier_count(&table->cls) + extra_space > table->max_flows; |
2e31a9b8 | 4082 | } |
8037acb4 | 4083 | |
2e31a9b8 | 4084 | static enum ofperr |
834fe5cb | 4085 | evict_rules_from_table(struct oftable *table, unsigned int extra_space) |
15aaf599 | 4086 | OVS_REQUIRES(ofproto_mutex) |
2e31a9b8 BP |
4087 | { |
4088 | while (should_evict_a_rule(table, extra_space)) { | |
4089 | struct rule *rule; | |
8037acb4 | 4090 | |
2e31a9b8 BP |
4091 | if (!choose_rule_to_evict(table, &rule)) { |
4092 | return OFPERR_OFPFMFC_TABLE_FULL; | |
2e31a9b8 | 4093 | } else { |
834fe5cb | 4094 | ofproto_rule_delete__(rule, OFPRR_EVICTION); |
2e31a9b8 | 4095 | } |
8037acb4 | 4096 | } |
2e31a9b8 BP |
4097 | |
4098 | return 0; | |
8037acb4 BP |
4099 | } |
4100 | ||
79eee1eb BP |
4101 | /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT |
4102 | * in which no matching flow already exists in the flow table. | |
4103 | * | |
4104 | * Adds the flow specified by 'ofm', which is followed by 'n_actions' | |
75a75043 | 4105 | * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow |
90bf1e07 BP |
4106 | * error code on failure, or OFPROTO_POSTPONE if the operation cannot be |
4107 | * initiated now but may be retried later. | |
79eee1eb | 4108 | * |
2509616e | 4109 | * The caller retains ownership of 'fm->ofpacts'. |
f25d0cf3 | 4110 | * |
79eee1eb BP |
4111 | * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id, |
4112 | * if any. */ | |
90bf1e07 | 4113 | static enum ofperr |
baae3d02 BP |
4114 | add_flow(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4115 | const struct flow_mod_requester *req) | |
15aaf599 | 4116 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 4117 | { |
062fea06 | 4118 | const struct rule_actions *actions; |
d0918789 | 4119 | struct oftable *table; |
8037acb4 | 4120 | struct cls_rule cr; |
064af421 | 4121 | struct rule *rule; |
5a361239 | 4122 | uint8_t table_id; |
554764d1 | 4123 | int error = 0; |
064af421 | 4124 | |
554764d1 SH |
4125 | if (!check_table_id(ofproto, fm->table_id)) { |
4126 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
48266274 BP |
4127 | return error; |
4128 | } | |
4129 | ||
7ee20df1 BP |
4130 | /* Pick table. */ |
4131 | if (fm->table_id == 0xff) { | |
13521ff5 | 4132 | if (ofproto->ofproto_class->rule_choose_table) { |
81a76618 BP |
4133 | error = ofproto->ofproto_class->rule_choose_table(ofproto, |
4134 | &fm->match, | |
7ee20df1 BP |
4135 | &table_id); |
4136 | if (error) { | |
4137 | return error; | |
4138 | } | |
cb22974d | 4139 | ovs_assert(table_id < ofproto->n_tables); |
7ee20df1 | 4140 | } else { |
5a361239 | 4141 | table_id = 0; |
7ee20df1 BP |
4142 | } |
4143 | } else if (fm->table_id < ofproto->n_tables) { | |
5a361239 | 4144 | table_id = fm->table_id; |
7ee20df1 | 4145 | } else { |
c22c56bd | 4146 | return OFPERR_OFPBRC_BAD_TABLE_ID; |
064af421 BP |
4147 | } |
4148 | ||
5a361239 | 4149 | table = &ofproto->tables[table_id]; |
834fe5cb BP |
4150 | if (table->flags & OFTABLE_READONLY |
4151 | && !(fm->flags & OFPUTIL_FF_NO_READONLY)) { | |
5c67e4af BP |
4152 | return OFPERR_OFPBRC_EPERM; |
4153 | } | |
4154 | ||
adcf00ba AZ |
4155 | if (!(fm->flags & OFPUTIL_FF_HIDDEN_FIELDS)) { |
4156 | if (!match_has_default_hidden_fields(&fm->match)) { | |
4157 | VLOG_WARN_RL(&rl, "%s: (add_flow) only internal flows can set " | |
4158 | "non-default values to hidden fields", ofproto->name); | |
4159 | return OFPERR_OFPBRC_EPERM; | |
4160 | } | |
4161 | } | |
4162 | ||
8037acb4 BP |
4163 | cls_rule_init(&cr, &fm->match, fm->priority); |
4164 | ||
b277c7cc | 4165 | /* Transform "add" into "modify" if there's an existing identical flow. */ |
8037acb4 | 4166 | rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls, &cr)); |
b277c7cc | 4167 | if (rule) { |
834fe5cb BP |
4168 | struct rule_collection rules; |
4169 | ||
8037acb4 | 4170 | cls_rule_destroy(&cr); |
b277c7cc | 4171 | |
834fe5cb BP |
4172 | rule_collection_init(&rules); |
4173 | rule_collection_add(&rules, rule); | |
4174 | fm->modify_cookie = true; | |
4175 | error = modify_flows__(ofproto, fm, &rules, req); | |
4176 | rule_collection_destroy(&rules); | |
a8e547c1 | 4177 | |
834fe5cb | 4178 | return error; |
b277c7cc BP |
4179 | } |
4180 | ||
81a76618 | 4181 | /* Check for overlap, if requested. */ |
0fb88c18 | 4182 | if (fm->flags & OFPUTIL_FF_CHECK_OVERLAP) { |
afae68b1 | 4183 | if (classifier_rule_overlaps(&table->cls, &cr)) { |
8037acb4 | 4184 | cls_rule_destroy(&cr); |
c09f755d BP |
4185 | return OFPERR_OFPFMFC_OVERLAP; |
4186 | } | |
7ee20df1 | 4187 | } |
81a76618 | 4188 | |
8037acb4 | 4189 | /* If necessary, evict an existing rule to clear out space. */ |
834fe5cb | 4190 | error = evict_rules_from_table(table, 1); |
8037acb4 BP |
4191 | if (error) { |
4192 | cls_rule_destroy(&cr); | |
4193 | return error; | |
4194 | } | |
2e1ae200 | 4195 | |
8037acb4 BP |
4196 | /* Allocate new rule. */ |
4197 | rule = ofproto->ofproto_class->rule_alloc(); | |
4198 | if (!rule) { | |
4199 | cls_rule_destroy(&cr); | |
4200 | VLOG_WARN_RL(&rl, "%s: failed to create rule (%s)", | |
4201 | ofproto->name, ovs_strerror(error)); | |
4202 | return ENOMEM; | |
4203 | } | |
4204 | ||
4205 | /* Initialize base state. */ | |
49a0e0eb BP |
4206 | *CONST_CAST(struct ofproto **, &rule->ofproto) = ofproto; |
4207 | cls_rule_move(CONST_CAST(struct cls_rule *, &rule->cr), &cr); | |
37bec3d3 | 4208 | ovs_refcount_init(&rule->ref_count); |
623e1caf | 4209 | rule->flow_cookie = fm->new_cookie; |
dc437090 | 4210 | rule->created = rule->modified = time_msec(); |
a3779dbc | 4211 | |
d10976b7 BP |
4212 | ovs_mutex_init(&rule->mutex); |
4213 | ovs_mutex_lock(&rule->mutex); | |
7ee20df1 BP |
4214 | rule->idle_timeout = fm->idle_timeout; |
4215 | rule->hard_timeout = fm->hard_timeout; | |
d10976b7 | 4216 | ovs_mutex_unlock(&rule->mutex); |
a3779dbc | 4217 | |
49a0e0eb | 4218 | *CONST_CAST(uint8_t *, &rule->table_id) = table - ofproto->tables; |
3f517bcd | 4219 | rule->flags = fm->flags & OFPUTIL_FF_STATE; |
4c7562c5 | 4220 | actions = rule_actions_create(fm->ofpacts, fm->ofpacts_len); |
062fea06 | 4221 | ovsrcu_set(&rule->actions, actions); |
9cae45dc | 4222 | list_init(&rule->meter_list_node); |
254750ce | 4223 | rule->eviction_group = NULL; |
e503cc19 | 4224 | list_init(&rule->expirable); |
2b07c8b1 BP |
4225 | rule->monitor_flags = 0; |
4226 | rule->add_seqno = 0; | |
4227 | rule->modify_seqno = 0; | |
7ee20df1 | 4228 | |
8037acb4 | 4229 | /* Construct rule, initializing derived state. */ |
b277c7cc BP |
4230 | error = ofproto->ofproto_class->rule_construct(rule); |
4231 | if (error) { | |
8037acb4 BP |
4232 | ofproto_rule_destroy__(rule); |
4233 | return error; | |
064af421 | 4234 | } |
8037acb4 | 4235 | |
062fea06 BP |
4236 | if (fm->hard_timeout || fm->idle_timeout) { |
4237 | list_insert(&ofproto->expirable, &rule->expirable); | |
4238 | } | |
4239 | cookies_insert(ofproto, rule); | |
4240 | eviction_group_add_rule(rule); | |
4c7562c5 | 4241 | if (actions->has_meter) { |
062fea06 BP |
4242 | meter_insert_rule(rule); |
4243 | } | |
1ebeaaa7 | 4244 | |
062fea06 | 4245 | classifier_insert(&table->cls, CONST_CAST(struct cls_rule *, &rule->cr)); |
8037acb4 | 4246 | |
b20f4073 | 4247 | error = ofproto->ofproto_class->rule_insert(rule); |
834fe5cb BP |
4248 | if (error) { |
4249 | oftable_remove_rule(rule); | |
4250 | ofproto_rule_unref(rule); | |
4251 | return error; | |
4252 | } | |
35f48b8b | 4253 | learned_cookies_inc(ofproto, actions); |
062fea06 | 4254 | |
834fe5cb BP |
4255 | if (minimask_get_vid_mask(&rule->cr.match.mask) == VLAN_VID_MASK) { |
4256 | if (ofproto->vlan_bitmap) { | |
4257 | uint16_t vid = miniflow_get_vid(&rule->cr.match.flow); | |
4258 | if (!bitmap_is_set(ofproto->vlan_bitmap, vid)) { | |
4259 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
4260 | ofproto->vlans_changed = true; | |
4261 | } | |
4262 | } else { | |
4263 | ofproto->vlans_changed = true; | |
4264 | } | |
4265 | } | |
4266 | ||
4267 | ofmonitor_report(ofproto->connmgr, rule, NXFME_ADDED, 0, | |
cdbdeeda | 4268 | req ? req->ofconn : NULL, req ? req->xid : 0, NULL); |
834fe5cb BP |
4269 | |
4270 | return req ? send_buffered_packet(req->ofconn, fm->buffer_id, rule) : 0; | |
064af421 | 4271 | } |
79eee1eb BP |
4272 | \f |
4273 | /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */ | |
064af421 | 4274 | |
9ed18e46 BP |
4275 | /* Modifies the rules listed in 'rules', changing their actions to match those |
4276 | * in 'fm'. | |
79eee1eb | 4277 | * |
9ed18e46 BP |
4278 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, |
4279 | * if any. | |
4280 | * | |
4281 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 4282 | static enum ofperr |
baae3d02 BP |
4283 | modify_flows__(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4284 | const struct rule_collection *rules, | |
4285 | const struct flow_mod_requester *req) | |
15aaf599 | 4286 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4287 | { |
35f48b8b | 4288 | struct list dead_cookies = LIST_INITIALIZER(&dead_cookies); |
834fe5cb | 4289 | enum nx_flow_update_event event; |
a8e547c1 | 4290 | size_t i; |
79eee1eb | 4291 | |
af822017 BP |
4292 | if (ofproto->ofproto_class->rule_premodify_actions) { |
4293 | for (i = 0; i < rules->n; i++) { | |
4294 | struct rule *rule = rules->rules[i]; | |
cb220b39 | 4295 | enum ofperr error; |
af822017 | 4296 | |
dd51dae2 BP |
4297 | error = ofproto->ofproto_class->rule_premodify_actions( |
4298 | rule, fm->ofpacts, fm->ofpacts_len); | |
4299 | if (error) { | |
4300 | return error; | |
af822017 BP |
4301 | } |
4302 | } | |
4303 | } | |
4304 | ||
834fe5cb | 4305 | event = fm->command == OFPFC_ADD ? NXFME_ADDED : NXFME_MODIFIED; |
a8e547c1 BP |
4306 | for (i = 0; i < rules->n; i++) { |
4307 | struct rule *rule = rules->rules[i]; | |
08043761 | 4308 | |
834fe5cb BP |
4309 | /* 'fm' says that */ |
4310 | bool change_cookie = (fm->modify_cookie | |
4311 | && fm->new_cookie != OVS_BE64_MAX | |
4312 | && fm->new_cookie != rule->flow_cookie); | |
2e1ae200 | 4313 | |
834fe5cb BP |
4314 | const struct rule_actions *actions = rule_get_actions(rule); |
4315 | bool change_actions = !ofpacts_equal(fm->ofpacts, fm->ofpacts_len, | |
4316 | actions->ofpacts, | |
4317 | actions->ofpacts_len); | |
5c67e4af | 4318 | |
834fe5cb | 4319 | bool reset_counters = (fm->flags & OFPUTIL_FF_RESET_COUNTS) != 0; |
a7d94793 | 4320 | |
834fe5cb BP |
4321 | long long int now = time_msec(); |
4322 | ||
4323 | /* FIXME: Implement OFPFUTIL_FF_RESET_COUNTS */ | |
98eaac36 | 4324 | |
834fe5cb BP |
4325 | if (change_cookie) { |
4326 | cookies_remove(ofproto, rule); | |
98eaac36 | 4327 | } |
834fe5cb BP |
4328 | |
4329 | ovs_mutex_lock(&rule->mutex); | |
4330 | if (fm->command == OFPFC_ADD) { | |
b277c7cc BP |
4331 | rule->idle_timeout = fm->idle_timeout; |
4332 | rule->hard_timeout = fm->hard_timeout; | |
3f517bcd | 4333 | rule->flags = fm->flags & OFPUTIL_FF_STATE; |
834fe5cb BP |
4334 | rule->created = now; |
4335 | } | |
4336 | if (change_cookie) { | |
4337 | rule->flow_cookie = fm->new_cookie; | |
4338 | } | |
4339 | rule->modified = now; | |
4340 | ovs_mutex_unlock(&rule->mutex); | |
4341 | ||
4342 | if (change_cookie) { | |
4343 | cookies_insert(ofproto, rule); | |
4344 | } | |
4345 | if (fm->command == OFPFC_ADD) { | |
b277c7cc BP |
4346 | if (fm->idle_timeout || fm->hard_timeout) { |
4347 | if (!rule->eviction_group) { | |
4348 | eviction_group_add_rule(rule); | |
4349 | } | |
4350 | } else { | |
4351 | eviction_group_remove_rule(rule); | |
4352 | } | |
4353 | } | |
4354 | ||
834fe5cb | 4355 | if (change_actions) { |
4c7562c5 | 4356 | ovsrcu_set(&rule->actions, rule_actions_create(fm->ofpacts, |
834fe5cb | 4357 | fm->ofpacts_len)); |
834fe5cb | 4358 | } |
884e1dc4 | 4359 | |
834fe5cb | 4360 | if (change_actions || reset_counters) { |
af822017 | 4361 | ofproto->ofproto_class->rule_modify_actions(rule, reset_counters); |
623e1caf | 4362 | } |
834fe5cb BP |
4363 | |
4364 | if (event != NXFME_MODIFIED || change_actions || change_cookie) { | |
4365 | ofmonitor_report(ofproto->connmgr, rule, event, 0, | |
cdbdeeda SH |
4366 | req ? req->ofconn : NULL, req ? req->xid : 0, |
4367 | change_actions ? actions : NULL); | |
834fe5cb | 4368 | } |
35f48b8b BP |
4369 | |
4370 | if (change_actions) { | |
4371 | learned_cookies_inc(ofproto, rule_get_actions(rule)); | |
4372 | learned_cookies_dec(ofproto, actions, &dead_cookies); | |
cdbdeeda | 4373 | rule_actions_destroy(actions); |
35f48b8b | 4374 | } |
834fe5cb | 4375 | } |
35f48b8b | 4376 | learned_cookies_flush(ofproto, &dead_cookies); |
834fe5cb BP |
4377 | |
4378 | if (fm->buffer_id != UINT32_MAX && req) { | |
cb220b39 SH |
4379 | return send_buffered_packet(req->ofconn, fm->buffer_id, |
4380 | rules->rules[0]); | |
5ecc9d81 | 4381 | } |
79eee1eb | 4382 | |
cb220b39 | 4383 | return 0; |
9ed18e46 BP |
4384 | } |
4385 | ||
9387b970 | 4386 | static enum ofperr |
baae3d02 BP |
4387 | modify_flows_add(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4388 | const struct flow_mod_requester *req) | |
15aaf599 | 4389 | OVS_REQUIRES(ofproto_mutex) |
9387b970 | 4390 | { |
b8266395 | 4391 | if (fm->cookie_mask != htonll(0) || fm->new_cookie == OVS_BE64_MAX) { |
9387b970 SH |
4392 | return 0; |
4393 | } | |
baae3d02 | 4394 | return add_flow(ofproto, fm, req); |
9387b970 SH |
4395 | } |
4396 | ||
90bf1e07 BP |
4397 | /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on |
4398 | * failure. | |
9ed18e46 BP |
4399 | * |
4400 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, | |
4401 | * if any. */ | |
90bf1e07 | 4402 | static enum ofperr |
baae3d02 BP |
4403 | modify_flows_loose(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4404 | const struct flow_mod_requester *req) | |
15aaf599 | 4405 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 4406 | { |
a9b22b7f | 4407 | struct rule_criteria criteria; |
a8e547c1 | 4408 | struct rule_collection rules; |
9ed18e46 BP |
4409 | int error; |
4410 | ||
a9b22b7f BP |
4411 | rule_criteria_init(&criteria, fm->table_id, &fm->match, 0, |
4412 | fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG11_ANY); | |
dd51dae2 BP |
4413 | rule_criteria_require_rw(&criteria, |
4414 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
a9b22b7f BP |
4415 | error = collect_rules_loose(ofproto, &criteria, &rules); |
4416 | rule_criteria_destroy(&criteria); | |
4417 | ||
a8e547c1 BP |
4418 | if (!error) { |
4419 | error = (rules.n > 0 | |
baae3d02 BP |
4420 | ? modify_flows__(ofproto, fm, &rules, req) |
4421 | : modify_flows_add(ofproto, fm, req)); | |
623e1caf | 4422 | } |
a8e547c1 BP |
4423 | |
4424 | rule_collection_destroy(&rules); | |
4425 | ||
4426 | return error; | |
79eee1eb BP |
4427 | } |
4428 | ||
4429 | /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error | |
baae3d02 | 4430 | * code on failure. */ |
90bf1e07 | 4431 | static enum ofperr |
baae3d02 BP |
4432 | modify_flow_strict(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4433 | const struct flow_mod_requester *req) | |
15aaf599 | 4434 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4435 | { |
a9b22b7f | 4436 | struct rule_criteria criteria; |
a8e547c1 | 4437 | struct rule_collection rules; |
6c1491fb BP |
4438 | int error; |
4439 | ||
a9b22b7f BP |
4440 | rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority, |
4441 | fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG11_ANY); | |
dd51dae2 BP |
4442 | rule_criteria_require_rw(&criteria, |
4443 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
a9b22b7f BP |
4444 | error = collect_rules_strict(ofproto, &criteria, &rules); |
4445 | rule_criteria_destroy(&criteria); | |
4446 | ||
a8e547c1 BP |
4447 | if (!error) { |
4448 | if (rules.n == 0) { | |
baae3d02 | 4449 | error = modify_flows_add(ofproto, fm, req); |
a8e547c1 | 4450 | } else if (rules.n == 1) { |
baae3d02 | 4451 | error = modify_flows__(ofproto, fm, &rules, req); |
a8e547c1 | 4452 | } |
623e1caf | 4453 | } |
a8e547c1 BP |
4454 | |
4455 | rule_collection_destroy(&rules); | |
4456 | ||
4457 | return error; | |
79eee1eb | 4458 | } |
9ed18e46 BP |
4459 | \f |
4460 | /* OFPFC_DELETE implementation. */ | |
79eee1eb | 4461 | |
9ca4a86f | 4462 | /* Deletes the rules listed in 'rules'. */ |
254750ce | 4463 | static void |
9ca4a86f | 4464 | delete_flows__(const struct rule_collection *rules, |
baae3d02 BP |
4465 | enum ofp_flow_removed_reason reason, |
4466 | const struct flow_mod_requester *req) | |
15aaf599 | 4467 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 4468 | { |
9ca4a86f | 4469 | if (rules->n) { |
35f48b8b | 4470 | struct list dead_cookies = LIST_INITIALIZER(&dead_cookies); |
9ca4a86f BP |
4471 | struct ofproto *ofproto = rules->rules[0]->ofproto; |
4472 | size_t i; | |
79eee1eb | 4473 | |
9ca4a86f BP |
4474 | for (i = 0; i < rules->n; i++) { |
4475 | struct rule *rule = rules->rules[i]; | |
35f48b8b | 4476 | const struct rule_actions *actions = rule_get_actions(rule); |
79eee1eb | 4477 | |
9ca4a86f BP |
4478 | ofproto_rule_send_removed(rule, reason); |
4479 | ||
4480 | ofmonitor_report(ofproto->connmgr, rule, NXFME_DELETED, reason, | |
cdbdeeda SH |
4481 | req ? req->ofconn : NULL, req ? req->xid : 0, |
4482 | NULL); | |
9ca4a86f BP |
4483 | oftable_remove_rule(rule); |
4484 | ofproto->ofproto_class->rule_delete(rule); | |
35f48b8b BP |
4485 | |
4486 | learned_cookies_dec(ofproto, actions, &dead_cookies); | |
9ca4a86f | 4487 | } |
35f48b8b | 4488 | learned_cookies_flush(ofproto, &dead_cookies); |
9ca4a86f BP |
4489 | ofmonitor_flush(ofproto->connmgr); |
4490 | } | |
79eee1eb | 4491 | } |
79eee1eb BP |
4492 | |
4493 | /* Implements OFPFC_DELETE. */ | |
90bf1e07 | 4494 | static enum ofperr |
baae3d02 | 4495 | delete_flows_loose(struct ofproto *ofproto, |
7024dffe | 4496 | const struct ofputil_flow_mod *fm, |
baae3d02 | 4497 | const struct flow_mod_requester *req) |
15aaf599 | 4498 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4499 | { |
a9b22b7f | 4500 | struct rule_criteria criteria; |
a8e547c1 | 4501 | struct rule_collection rules; |
90bf1e07 | 4502 | enum ofperr error; |
064af421 | 4503 | |
a9b22b7f BP |
4504 | rule_criteria_init(&criteria, fm->table_id, &fm->match, 0, |
4505 | fm->cookie, fm->cookie_mask, | |
4506 | fm->out_port, fm->out_group); | |
dd51dae2 BP |
4507 | rule_criteria_require_rw(&criteria, |
4508 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
a9b22b7f BP |
4509 | error = collect_rules_loose(ofproto, &criteria, &rules); |
4510 | rule_criteria_destroy(&criteria); | |
4511 | ||
a8e547c1 | 4512 | if (!error && rules.n > 0) { |
9ca4a86f | 4513 | delete_flows__(&rules, fm->delete_reason, req); |
a8e547c1 BP |
4514 | } |
4515 | rule_collection_destroy(&rules); | |
4516 | ||
4517 | return error; | |
064af421 BP |
4518 | } |
4519 | ||
79eee1eb | 4520 | /* Implements OFPFC_DELETE_STRICT. */ |
90bf1e07 | 4521 | static enum ofperr |
baae3d02 BP |
4522 | delete_flow_strict(struct ofproto *ofproto, const struct ofputil_flow_mod *fm, |
4523 | const struct flow_mod_requester *req) | |
15aaf599 | 4524 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4525 | { |
a9b22b7f | 4526 | struct rule_criteria criteria; |
a8e547c1 | 4527 | struct rule_collection rules; |
90bf1e07 | 4528 | enum ofperr error; |
79eee1eb | 4529 | |
a9b22b7f BP |
4530 | rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority, |
4531 | fm->cookie, fm->cookie_mask, | |
4532 | fm->out_port, fm->out_group); | |
dd51dae2 BP |
4533 | rule_criteria_require_rw(&criteria, |
4534 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
a9b22b7f BP |
4535 | error = collect_rules_strict(ofproto, &criteria, &rules); |
4536 | rule_criteria_destroy(&criteria); | |
4537 | ||
a8e547c1 | 4538 | if (!error && rules.n > 0) { |
9ca4a86f | 4539 | delete_flows__(&rules, fm->delete_reason, req); |
a8e547c1 BP |
4540 | } |
4541 | rule_collection_destroy(&rules); | |
4542 | ||
4543 | return error; | |
abe529af BP |
4544 | } |
4545 | ||
4546 | static void | |
4547 | ofproto_rule_send_removed(struct rule *rule, uint8_t reason) | |
15aaf599 | 4548 | OVS_REQUIRES(ofproto_mutex) |
abe529af BP |
4549 | { |
4550 | struct ofputil_flow_removed fr; | |
dc437090 | 4551 | long long int used; |
abe529af | 4552 | |
834fe5cb BP |
4553 | if (rule_is_hidden(rule) || |
4554 | !(rule->flags & OFPUTIL_FF_SEND_FLOW_REM)) { | |
abe529af BP |
4555 | return; |
4556 | } | |
4557 | ||
5cb7a798 | 4558 | minimatch_expand(&rule->cr.match, &fr.match); |
81a76618 | 4559 | fr.priority = rule->cr.priority; |
abe529af BP |
4560 | fr.cookie = rule->flow_cookie; |
4561 | fr.reason = reason; | |
95216219 | 4562 | fr.table_id = rule->table_id; |
65e0be10 BP |
4563 | calc_duration(rule->created, time_msec(), |
4564 | &fr.duration_sec, &fr.duration_nsec); | |
d10976b7 | 4565 | ovs_mutex_lock(&rule->mutex); |
abe529af | 4566 | fr.idle_timeout = rule->idle_timeout; |
fa2bad0f | 4567 | fr.hard_timeout = rule->hard_timeout; |
d10976b7 | 4568 | ovs_mutex_unlock(&rule->mutex); |
abe529af | 4569 | rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count, |
dc437090 | 4570 | &fr.byte_count, &used); |
abe529af BP |
4571 | |
4572 | connmgr_send_flow_removed(rule->ofproto->connmgr, &fr); | |
4573 | } | |
4574 | ||
4575 | /* Sends an OpenFlow "flow removed" message with the given 'reason' (either | |
4576 | * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its | |
4577 | * ofproto. | |
4578 | * | |
4579 | * ofproto implementation ->run() functions should use this function to expire | |
4580 | * OpenFlow flows. */ | |
4581 | void | |
4582 | ofproto_rule_expire(struct rule *rule, uint8_t reason) | |
15aaf599 | 4583 | OVS_REQUIRES(ofproto_mutex) |
abe529af | 4584 | { |
b20f4073 | 4585 | ofproto_rule_delete__(rule, reason); |
79eee1eb | 4586 | } |
994c9973 BP |
4587 | |
4588 | /* Reduces '*timeout' to no more than 'max'. A value of zero in either case | |
4589 | * means "infinite". */ | |
4590 | static void | |
4591 | reduce_timeout(uint16_t max, uint16_t *timeout) | |
4592 | { | |
4593 | if (max && (!*timeout || *timeout > max)) { | |
4594 | *timeout = max; | |
4595 | } | |
4596 | } | |
4597 | ||
4598 | /* If 'idle_timeout' is nonzero, and 'rule' has no idle timeout or an idle | |
4599 | * timeout greater than 'idle_timeout', lowers 'rule''s idle timeout to | |
4600 | * 'idle_timeout' seconds. Similarly for 'hard_timeout'. | |
4601 | * | |
4602 | * Suitable for implementing OFPACT_FIN_TIMEOUT. */ | |
4603 | void | |
4604 | ofproto_rule_reduce_timeouts(struct rule *rule, | |
4605 | uint16_t idle_timeout, uint16_t hard_timeout) | |
d10976b7 | 4606 | OVS_EXCLUDED(ofproto_mutex, rule->mutex) |
994c9973 BP |
4607 | { |
4608 | if (!idle_timeout && !hard_timeout) { | |
4609 | return; | |
4610 | } | |
4611 | ||
abe7b10f | 4612 | ovs_mutex_lock(&ofproto_mutex); |
994c9973 BP |
4613 | if (list_is_empty(&rule->expirable)) { |
4614 | list_insert(&rule->ofproto->expirable, &rule->expirable); | |
4615 | } | |
abe7b10f | 4616 | ovs_mutex_unlock(&ofproto_mutex); |
994c9973 | 4617 | |
d10976b7 | 4618 | ovs_mutex_lock(&rule->mutex); |
994c9973 BP |
4619 | reduce_timeout(idle_timeout, &rule->idle_timeout); |
4620 | reduce_timeout(hard_timeout, &rule->hard_timeout); | |
d10976b7 | 4621 | ovs_mutex_unlock(&rule->mutex); |
994c9973 | 4622 | } |
79eee1eb | 4623 | \f |
90bf1e07 | 4624 | static enum ofperr |
2e4f5fcf | 4625 | handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
15aaf599 | 4626 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 4627 | { |
a5b8d268 | 4628 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
a9a2da38 | 4629 | struct ofputil_flow_mod fm; |
f25d0cf3 BP |
4630 | uint64_t ofpacts_stub[1024 / 8]; |
4631 | struct ofpbuf ofpacts; | |
90bf1e07 | 4632 | enum ofperr error; |
064af421 | 4633 | |
76589937 | 4634 | error = reject_slave_controller(ofconn); |
9deba63b | 4635 | if (error) { |
f25d0cf3 | 4636 | goto exit; |
9deba63b | 4637 | } |
3052b0c5 | 4638 | |
f25d0cf3 BP |
4639 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
4640 | error = ofputil_decode_flow_mod(&fm, oh, ofconn_get_protocol(ofconn), | |
7e9f8266 BP |
4641 | &ofpacts, |
4642 | u16_to_ofp(ofproto->max_ports), | |
4643 | ofproto->n_tables); | |
4644 | if (!error) { | |
4645 | error = ofproto_check_ofpacts(ofproto, fm.ofpacts, fm.ofpacts_len); | |
4646 | } | |
548de4dd | 4647 | if (!error) { |
baae3d02 BP |
4648 | struct flow_mod_requester req; |
4649 | ||
4650 | req.ofconn = ofconn; | |
834fe5cb | 4651 | req.xid = oh->xid; |
baae3d02 | 4652 | error = handle_flow_mod__(ofproto, &fm, &req); |
49bdc010 | 4653 | } |
a5b8d268 | 4654 | if (error) { |
f25d0cf3 | 4655 | goto exit_free_ofpacts; |
a5b8d268 | 4656 | } |
2e310801 | 4657 | |
696d1bcf | 4658 | ofconn_report_flow_mod(ofconn, fm.command); |
a5b8d268 | 4659 | |
f25d0cf3 BP |
4660 | exit_free_ofpacts: |
4661 | ofpbuf_uninit(&ofpacts); | |
4662 | exit: | |
4663 | return error; | |
75a75043 BP |
4664 | } |
4665 | ||
90bf1e07 | 4666 | static enum ofperr |
baae3d02 BP |
4667 | handle_flow_mod__(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4668 | const struct flow_mod_requester *req) | |
15aaf599 | 4669 | OVS_EXCLUDED(ofproto_mutex) |
75a75043 | 4670 | { |
35412852 | 4671 | enum ofperr error; |
75a75043 | 4672 | |
15aaf599 | 4673 | ovs_mutex_lock(&ofproto_mutex); |
baae3d02 BP |
4674 | switch (fm->command) { |
4675 | case OFPFC_ADD: | |
4676 | error = add_flow(ofproto, fm, req); | |
4677 | break; | |
3052b0c5 | 4678 | |
baae3d02 BP |
4679 | case OFPFC_MODIFY: |
4680 | error = modify_flows_loose(ofproto, fm, req); | |
4681 | break; | |
3052b0c5 | 4682 | |
baae3d02 BP |
4683 | case OFPFC_MODIFY_STRICT: |
4684 | error = modify_flow_strict(ofproto, fm, req); | |
4685 | break; | |
3052b0c5 | 4686 | |
baae3d02 BP |
4687 | case OFPFC_DELETE: |
4688 | error = delete_flows_loose(ofproto, fm, req); | |
4689 | break; | |
3052b0c5 | 4690 | |
baae3d02 BP |
4691 | case OFPFC_DELETE_STRICT: |
4692 | error = delete_flow_strict(ofproto, fm, req); | |
4693 | break; | |
3052b0c5 | 4694 | |
baae3d02 BP |
4695 | default: |
4696 | if (fm->command > 0xff) { | |
4697 | VLOG_WARN_RL(&rl, "%s: flow_mod has explicit table_id but " | |
4698 | "flow_mod_table_id extension is not enabled", | |
4699 | ofproto->name); | |
6c1491fb | 4700 | } |
baae3d02 BP |
4701 | error = OFPERR_OFPFMFC_BAD_COMMAND; |
4702 | break; | |
3052b0c5 | 4703 | } |
baae3d02 | 4704 | ofmonitor_flush(ofproto->connmgr); |
15aaf599 | 4705 | ovs_mutex_unlock(&ofproto_mutex); |
35412852 BP |
4706 | |
4707 | run_rule_executes(ofproto); | |
4708 | return error; | |
3052b0c5 BP |
4709 | } |
4710 | ||
90bf1e07 | 4711 | static enum ofperr |
d1e2cf21 | 4712 | handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh) |
9deba63b | 4713 | { |
f4f1ea7e BP |
4714 | struct ofputil_role_request request; |
4715 | struct ofputil_role_request reply; | |
9deba63b | 4716 | struct ofpbuf *buf; |
6ea4776b JR |
4717 | enum ofperr error; |
4718 | ||
f4f1ea7e | 4719 | error = ofputil_decode_role_message(oh, &request); |
6ea4776b JR |
4720 | if (error) { |
4721 | return error; | |
4722 | } | |
9deba63b | 4723 | |
f4f1ea7e | 4724 | if (request.role != OFPCR12_ROLE_NOCHANGE) { |
f4f1ea7e BP |
4725 | if (request.have_generation_id |
4726 | && !ofconn_set_master_election_id(ofconn, request.generation_id)) { | |
4727 | return OFPERR_OFPRRFC_STALE; | |
6ea4776b | 4728 | } |
6ea4776b | 4729 | |
f4f1ea7e BP |
4730 | ofconn_set_role(ofconn, request.role); |
4731 | } | |
9deba63b | 4732 | |
f4f1ea7e | 4733 | reply.role = ofconn_get_role(ofconn); |
147cc9d3 BP |
4734 | reply.have_generation_id = ofconn_get_master_election_id( |
4735 | ofconn, &reply.generation_id); | |
f4f1ea7e | 4736 | buf = ofputil_encode_role_reply(oh, &reply); |
b0421aa2 | 4737 | ofconn_send_reply(ofconn, buf); |
9deba63b BP |
4738 | |
4739 | return 0; | |
4740 | } | |
4741 | ||
90bf1e07 | 4742 | static enum ofperr |
6c1491fb BP |
4743 | handle_nxt_flow_mod_table_id(struct ofconn *ofconn, |
4744 | const struct ofp_header *oh) | |
4745 | { | |
982697a4 | 4746 | const struct nx_flow_mod_table_id *msg = ofpmsg_body(oh); |
27527aa0 BP |
4747 | enum ofputil_protocol cur, next; |
4748 | ||
4749 | cur = ofconn_get_protocol(ofconn); | |
4750 | next = ofputil_protocol_set_tid(cur, msg->set != 0); | |
4751 | ofconn_set_protocol(ofconn, next); | |
6c1491fb | 4752 | |
6c1491fb BP |
4753 | return 0; |
4754 | } | |
4755 | ||
90bf1e07 | 4756 | static enum ofperr |
d1e2cf21 | 4757 | handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh) |
09246b99 | 4758 | { |
982697a4 | 4759 | const struct nx_set_flow_format *msg = ofpmsg_body(oh); |
27527aa0 BP |
4760 | enum ofputil_protocol cur, next; |
4761 | enum ofputil_protocol next_base; | |
09246b99 | 4762 | |
27527aa0 BP |
4763 | next_base = ofputil_nx_flow_format_to_protocol(ntohl(msg->format)); |
4764 | if (!next_base) { | |
90bf1e07 | 4765 | return OFPERR_OFPBRC_EPERM; |
09246b99 | 4766 | } |
7ee20df1 | 4767 | |
27527aa0 BP |
4768 | cur = ofconn_get_protocol(ofconn); |
4769 | next = ofputil_protocol_set_base(cur, next_base); | |
27527aa0 | 4770 | ofconn_set_protocol(ofconn, next); |
b20f4073 | 4771 | |
7ee20df1 | 4772 | return 0; |
09246b99 BP |
4773 | } |
4774 | ||
90bf1e07 | 4775 | static enum ofperr |
54834960 EJ |
4776 | handle_nxt_set_packet_in_format(struct ofconn *ofconn, |
4777 | const struct ofp_header *oh) | |
4778 | { | |
982697a4 | 4779 | const struct nx_set_packet_in_format *msg = ofpmsg_body(oh); |
54834960 EJ |
4780 | uint32_t format; |
4781 | ||
54834960 | 4782 | format = ntohl(msg->format); |
a15f0eeb | 4783 | if (format != NXPIF_OPENFLOW10 && format != NXPIF_NXM) { |
90bf1e07 | 4784 | return OFPERR_OFPBRC_EPERM; |
54834960 EJ |
4785 | } |
4786 | ||
54834960 EJ |
4787 | ofconn_set_packet_in_format(ofconn, format); |
4788 | return 0; | |
4789 | } | |
4790 | ||
80d5aefd BP |
4791 | static enum ofperr |
4792 | handle_nxt_set_async_config(struct ofconn *ofconn, const struct ofp_header *oh) | |
4793 | { | |
982697a4 | 4794 | const struct nx_async_config *msg = ofpmsg_body(oh); |
80d5aefd BP |
4795 | uint32_t master[OAM_N_TYPES]; |
4796 | uint32_t slave[OAM_N_TYPES]; | |
4797 | ||
4798 | master[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[0]); | |
4799 | master[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[0]); | |
4800 | master[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[0]); | |
4801 | ||
4802 | slave[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[1]); | |
4803 | slave[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[1]); | |
4804 | slave[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[1]); | |
4805 | ||
4806 | ofconn_set_async_config(ofconn, master, slave); | |
4550b647 MM |
4807 | if (ofconn_get_type(ofconn) == OFCONN_SERVICE && |
4808 | !ofconn_get_miss_send_len(ofconn)) { | |
4809 | ofconn_set_miss_send_len(ofconn, OFP_DEFAULT_MISS_SEND_LEN); | |
4810 | } | |
80d5aefd BP |
4811 | |
4812 | return 0; | |
4813 | } | |
4814 | ||
c423b3b3 AC |
4815 | static enum ofperr |
4816 | handle_nxt_get_async_request(struct ofconn *ofconn, const struct ofp_header *oh) | |
4817 | { | |
4818 | struct ofpbuf *buf; | |
4819 | uint32_t master[OAM_N_TYPES]; | |
4820 | uint32_t slave[OAM_N_TYPES]; | |
4821 | struct nx_async_config *msg; | |
4822 | ||
4823 | ofconn_get_async_config(ofconn, master, slave); | |
4824 | buf = ofpraw_alloc_reply(OFPRAW_OFPT13_GET_ASYNC_REPLY, oh, 0); | |
4825 | msg = ofpbuf_put_zeros(buf, sizeof *msg); | |
4826 | ||
4827 | msg->packet_in_mask[0] = htonl(master[OAM_PACKET_IN]); | |
4828 | msg->port_status_mask[0] = htonl(master[OAM_PORT_STATUS]); | |
4829 | msg->flow_removed_mask[0] = htonl(master[OAM_FLOW_REMOVED]); | |
4830 | ||
4831 | msg->packet_in_mask[1] = htonl(slave[OAM_PACKET_IN]); | |
4832 | msg->port_status_mask[1] = htonl(slave[OAM_PORT_STATUS]); | |
4833 | msg->flow_removed_mask[1] = htonl(slave[OAM_FLOW_REMOVED]); | |
4834 | ||
4835 | ofconn_send_reply(ofconn, buf); | |
4836 | ||
4837 | return 0; | |
4838 | } | |
4839 | ||
a7349929 BP |
4840 | static enum ofperr |
4841 | handle_nxt_set_controller_id(struct ofconn *ofconn, | |
4842 | const struct ofp_header *oh) | |
4843 | { | |
982697a4 | 4844 | const struct nx_controller_id *nci = ofpmsg_body(oh); |
a7349929 | 4845 | |
a7349929 BP |
4846 | if (!is_all_zeros(nci->zero, sizeof nci->zero)) { |
4847 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
4848 | } | |
4849 | ||
4850 | ofconn_set_controller_id(ofconn, ntohs(nci->controller_id)); | |
4851 | return 0; | |
4852 | } | |
4853 | ||
90bf1e07 | 4854 | static enum ofperr |
d1e2cf21 | 4855 | handle_barrier_request(struct ofconn *ofconn, const struct ofp_header *oh) |
246e61ea | 4856 | { |
246e61ea JP |
4857 | struct ofpbuf *buf; |
4858 | ||
982697a4 BP |
4859 | buf = ofpraw_alloc_reply((oh->version == OFP10_VERSION |
4860 | ? OFPRAW_OFPT10_BARRIER_REPLY | |
4861 | : OFPRAW_OFPT11_BARRIER_REPLY), oh, 0); | |
b0421aa2 | 4862 | ofconn_send_reply(ofconn, buf); |
246e61ea JP |
4863 | return 0; |
4864 | } | |
4865 | ||
2b07c8b1 BP |
4866 | static void |
4867 | ofproto_compose_flow_refresh_update(const struct rule *rule, | |
4868 | enum nx_flow_monitor_flags flags, | |
4869 | struct list *msgs) | |
15aaf599 | 4870 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 | 4871 | { |
6f00e29b | 4872 | const struct rule_actions *actions; |
2b07c8b1 | 4873 | struct ofputil_flow_update fu; |
5cb7a798 | 4874 | struct match match; |
2b07c8b1 | 4875 | |
2b07c8b1 BP |
4876 | fu.event = (flags & (NXFMF_INITIAL | NXFMF_ADD) |
4877 | ? NXFME_ADDED : NXFME_MODIFIED); | |
4878 | fu.reason = 0; | |
d10976b7 | 4879 | ovs_mutex_lock(&rule->mutex); |
2b07c8b1 BP |
4880 | fu.idle_timeout = rule->idle_timeout; |
4881 | fu.hard_timeout = rule->hard_timeout; | |
d10976b7 | 4882 | ovs_mutex_unlock(&rule->mutex); |
2b07c8b1 BP |
4883 | fu.table_id = rule->table_id; |
4884 | fu.cookie = rule->flow_cookie; | |
5cb7a798 BP |
4885 | minimatch_expand(&rule->cr.match, &match); |
4886 | fu.match = &match; | |
6b140a4e | 4887 | fu.priority = rule->cr.priority; |
6f00e29b | 4888 | |
b20f4073 | 4889 | actions = flags & NXFMF_ACTIONS ? rule_get_actions(rule) : NULL; |
6f00e29b BP |
4890 | fu.ofpacts = actions ? actions->ofpacts : NULL; |
4891 | fu.ofpacts_len = actions ? actions->ofpacts_len : 0; | |
2b07c8b1 BP |
4892 | |
4893 | if (list_is_empty(msgs)) { | |
4894 | ofputil_start_flow_update(msgs); | |
4895 | } | |
4896 | ofputil_append_flow_update(&fu, msgs); | |
4897 | } | |
4898 | ||
4899 | void | |
a8e547c1 BP |
4900 | ofmonitor_compose_refresh_updates(struct rule_collection *rules, |
4901 | struct list *msgs) | |
15aaf599 | 4902 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 | 4903 | { |
a8e547c1 | 4904 | size_t i; |
2b07c8b1 | 4905 | |
a8e547c1 BP |
4906 | for (i = 0; i < rules->n; i++) { |
4907 | struct rule *rule = rules->rules[i]; | |
2b07c8b1 BP |
4908 | enum nx_flow_monitor_flags flags = rule->monitor_flags; |
4909 | rule->monitor_flags = 0; | |
4910 | ||
4911 | ofproto_compose_flow_refresh_update(rule, flags, msgs); | |
4912 | } | |
4913 | } | |
4914 | ||
4915 | static void | |
4916 | ofproto_collect_ofmonitor_refresh_rule(const struct ofmonitor *m, | |
4917 | struct rule *rule, uint64_t seqno, | |
a8e547c1 | 4918 | struct rule_collection *rules) |
15aaf599 | 4919 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
4920 | { |
4921 | enum nx_flow_monitor_flags update; | |
4922 | ||
5e8b38b0 | 4923 | if (rule_is_hidden(rule)) { |
2b07c8b1 BP |
4924 | return; |
4925 | } | |
4926 | ||
b20f4073 | 4927 | if (!ofproto_rule_has_out_port(rule, m->out_port)) { |
2b07c8b1 BP |
4928 | return; |
4929 | } | |
4930 | ||
4931 | if (seqno) { | |
4932 | if (rule->add_seqno > seqno) { | |
4933 | update = NXFMF_ADD | NXFMF_MODIFY; | |
4934 | } else if (rule->modify_seqno > seqno) { | |
4935 | update = NXFMF_MODIFY; | |
4936 | } else { | |
4937 | return; | |
4938 | } | |
4939 | ||
4940 | if (!(m->flags & update)) { | |
4941 | return; | |
4942 | } | |
4943 | } else { | |
4944 | update = NXFMF_INITIAL; | |
4945 | } | |
4946 | ||
4947 | if (!rule->monitor_flags) { | |
a8e547c1 | 4948 | rule_collection_add(rules, rule); |
2b07c8b1 BP |
4949 | } |
4950 | rule->monitor_flags |= update | (m->flags & NXFMF_ACTIONS); | |
4951 | } | |
4952 | ||
4953 | static void | |
4954 | ofproto_collect_ofmonitor_refresh_rules(const struct ofmonitor *m, | |
4955 | uint64_t seqno, | |
a8e547c1 | 4956 | struct rule_collection *rules) |
15aaf599 | 4957 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
4958 | { |
4959 | const struct ofproto *ofproto = ofconn_get_ofproto(m->ofconn); | |
2b07c8b1 | 4960 | const struct oftable *table; |
81a76618 | 4961 | struct cls_rule target; |
2b07c8b1 | 4962 | |
5cb7a798 | 4963 | cls_rule_init_from_minimatch(&target, &m->match, 0); |
2b07c8b1 | 4964 | FOR_EACH_MATCHING_TABLE (table, m->table_id, ofproto) { |
2b07c8b1 BP |
4965 | struct rule *rule; |
4966 | ||
5f0476ce | 4967 | CLS_FOR_EACH_TARGET (rule, cr, &table->cls, &target) { |
2b07c8b1 BP |
4968 | ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules); |
4969 | } | |
4970 | } | |
48d28ac1 | 4971 | cls_rule_destroy(&target); |
2b07c8b1 BP |
4972 | } |
4973 | ||
4974 | static void | |
4975 | ofproto_collect_ofmonitor_initial_rules(struct ofmonitor *m, | |
a8e547c1 | 4976 | struct rule_collection *rules) |
15aaf599 | 4977 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
4978 | { |
4979 | if (m->flags & NXFMF_INITIAL) { | |
4980 | ofproto_collect_ofmonitor_refresh_rules(m, 0, rules); | |
4981 | } | |
4982 | } | |
4983 | ||
4984 | void | |
4985 | ofmonitor_collect_resume_rules(struct ofmonitor *m, | |
a8e547c1 | 4986 | uint64_t seqno, struct rule_collection *rules) |
15aaf599 | 4987 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
4988 | { |
4989 | ofproto_collect_ofmonitor_refresh_rules(m, seqno, rules); | |
4990 | } | |
4991 | ||
7b900689 SH |
4992 | static enum ofperr |
4993 | flow_monitor_delete(struct ofconn *ofconn, uint32_t id) | |
4994 | OVS_REQUIRES(ofproto_mutex) | |
4995 | { | |
4996 | struct ofmonitor *m; | |
4997 | enum ofperr error; | |
4998 | ||
4999 | m = ofmonitor_lookup(ofconn, id); | |
5000 | if (m) { | |
5001 | ofmonitor_destroy(m); | |
5002 | error = 0; | |
5003 | } else { | |
5004 | error = OFPERR_OFPMOFC_UNKNOWN_MONITOR; | |
5005 | } | |
5006 | ||
5007 | return error; | |
5008 | } | |
5009 | ||
2b07c8b1 | 5010 | static enum ofperr |
982697a4 | 5011 | handle_flow_monitor_request(struct ofconn *ofconn, const struct ofp_header *oh) |
15aaf599 | 5012 | OVS_EXCLUDED(ofproto_mutex) |
2b07c8b1 BP |
5013 | { |
5014 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5015 | struct ofmonitor **monitors; | |
5016 | size_t n_monitors, allocated_monitors; | |
a8e547c1 | 5017 | struct rule_collection rules; |
2b07c8b1 BP |
5018 | struct list replies; |
5019 | enum ofperr error; | |
2b07c8b1 BP |
5020 | struct ofpbuf b; |
5021 | size_t i; | |
5022 | ||
982697a4 | 5023 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
2b07c8b1 BP |
5024 | monitors = NULL; |
5025 | n_monitors = allocated_monitors = 0; | |
15aaf599 BP |
5026 | |
5027 | ovs_mutex_lock(&ofproto_mutex); | |
2b07c8b1 BP |
5028 | for (;;) { |
5029 | struct ofputil_flow_monitor_request request; | |
5030 | struct ofmonitor *m; | |
5031 | int retval; | |
5032 | ||
5033 | retval = ofputil_decode_flow_monitor_request(&request, &b); | |
5034 | if (retval == EOF) { | |
5035 | break; | |
5036 | } else if (retval) { | |
5037 | error = retval; | |
5038 | goto error; | |
5039 | } | |
5040 | ||
5041 | if (request.table_id != 0xff | |
5042 | && request.table_id >= ofproto->n_tables) { | |
5043 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
5044 | goto error; | |
5045 | } | |
5046 | ||
5047 | error = ofmonitor_create(&request, ofconn, &m); | |
5048 | if (error) { | |
5049 | goto error; | |
5050 | } | |
5051 | ||
5052 | if (n_monitors >= allocated_monitors) { | |
5053 | monitors = x2nrealloc(monitors, &allocated_monitors, | |
5054 | sizeof *monitors); | |
5055 | } | |
5056 | monitors[n_monitors++] = m; | |
5057 | } | |
5058 | ||
a8e547c1 | 5059 | rule_collection_init(&rules); |
2b07c8b1 BP |
5060 | for (i = 0; i < n_monitors; i++) { |
5061 | ofproto_collect_ofmonitor_initial_rules(monitors[i], &rules); | |
5062 | } | |
5063 | ||
982697a4 | 5064 | ofpmp_init(&replies, oh); |
2b07c8b1 | 5065 | ofmonitor_compose_refresh_updates(&rules, &replies); |
15aaf599 BP |
5066 | ovs_mutex_unlock(&ofproto_mutex); |
5067 | ||
a8e547c1 BP |
5068 | rule_collection_destroy(&rules); |
5069 | ||
2b07c8b1 | 5070 | ofconn_send_replies(ofconn, &replies); |
2b07c8b1 BP |
5071 | free(monitors); |
5072 | ||
5073 | return 0; | |
5074 | ||
5075 | error: | |
5076 | for (i = 0; i < n_monitors; i++) { | |
5077 | ofmonitor_destroy(monitors[i]); | |
5078 | } | |
5079 | free(monitors); | |
4cd1bc9d BP |
5080 | ovs_mutex_unlock(&ofproto_mutex); |
5081 | ||
2b07c8b1 BP |
5082 | return error; |
5083 | } | |
5084 | ||
5085 | static enum ofperr | |
5086 | handle_flow_monitor_cancel(struct ofconn *ofconn, const struct ofp_header *oh) | |
15aaf599 | 5087 | OVS_EXCLUDED(ofproto_mutex) |
2b07c8b1 | 5088 | { |
15aaf599 | 5089 | enum ofperr error; |
2b07c8b1 BP |
5090 | uint32_t id; |
5091 | ||
5092 | id = ofputil_decode_flow_monitor_cancel(oh); | |
15aaf599 BP |
5093 | |
5094 | ovs_mutex_lock(&ofproto_mutex); | |
7b900689 | 5095 | error = flow_monitor_delete(ofconn, id); |
15aaf599 | 5096 | ovs_mutex_unlock(&ofproto_mutex); |
2b07c8b1 | 5097 | |
15aaf599 | 5098 | return error; |
2b07c8b1 BP |
5099 | } |
5100 | ||
9cae45dc JR |
5101 | /* Meters implementation. |
5102 | * | |
5103 | * Meter table entry, indexed by the OpenFlow meter_id. | |
9cae45dc JR |
5104 | * 'created' is used to compute the duration for meter stats. |
5105 | * 'list rules' is needed so that we can delete the dependent rules when the | |
5106 | * meter table entry is deleted. | |
5107 | * 'provider_meter_id' is for the provider's private use. | |
5108 | */ | |
5109 | struct meter { | |
5110 | long long int created; /* Time created. */ | |
5111 | struct list rules; /* List of "struct rule_dpif"s. */ | |
5112 | ofproto_meter_id provider_meter_id; | |
5113 | uint16_t flags; /* Meter flags. */ | |
5114 | uint16_t n_bands; /* Number of meter bands. */ | |
5115 | struct ofputil_meter_band *bands; | |
5116 | }; | |
5117 | ||
5118 | /* | |
5119 | * This is used in instruction validation at flow set-up time, | |
5120 | * as flows may not use non-existing meters. | |
9cae45dc JR |
5121 | * Return value of UINT32_MAX signifies an invalid meter. |
5122 | */ | |
65efd2ab JR |
5123 | static uint32_t |
5124 | get_provider_meter_id(const struct ofproto *ofproto, uint32_t of_meter_id) | |
9cae45dc JR |
5125 | { |
5126 | if (of_meter_id && of_meter_id <= ofproto->meter_features.max_meters) { | |
5127 | const struct meter *meter = ofproto->meters[of_meter_id]; | |
5128 | if (meter) { | |
5129 | return meter->provider_meter_id.uint32; | |
5130 | } | |
5131 | } | |
5132 | return UINT32_MAX; | |
5133 | } | |
5134 | ||
062fea06 BP |
5135 | /* Finds the meter invoked by 'rule''s actions and adds 'rule' to the meter's |
5136 | * list of rules. */ | |
5137 | static void | |
5138 | meter_insert_rule(struct rule *rule) | |
5139 | { | |
5140 | const struct rule_actions *a = rule_get_actions(rule); | |
5141 | uint32_t meter_id = ofpacts_get_meter(a->ofpacts, a->ofpacts_len); | |
5142 | struct meter *meter = rule->ofproto->meters[meter_id]; | |
5143 | ||
5144 | list_insert(&meter->rules, &rule->meter_list_node); | |
5145 | } | |
5146 | ||
9cae45dc JR |
5147 | static void |
5148 | meter_update(struct meter *meter, const struct ofputil_meter_config *config) | |
5149 | { | |
5150 | free(meter->bands); | |
5151 | ||
5152 | meter->flags = config->flags; | |
5153 | meter->n_bands = config->n_bands; | |
5154 | meter->bands = xmemdup(config->bands, | |
5155 | config->n_bands * sizeof *meter->bands); | |
5156 | } | |
5157 | ||
5158 | static struct meter * | |
5159 | meter_create(const struct ofputil_meter_config *config, | |
5160 | ofproto_meter_id provider_meter_id) | |
5161 | { | |
5162 | struct meter *meter; | |
5163 | ||
5164 | meter = xzalloc(sizeof *meter); | |
5165 | meter->provider_meter_id = provider_meter_id; | |
5166 | meter->created = time_msec(); | |
5167 | list_init(&meter->rules); | |
5168 | ||
5169 | meter_update(meter, config); | |
5170 | ||
5171 | return meter; | |
5172 | } | |
5173 | ||
6b3f7f02 JR |
5174 | static void |
5175 | meter_delete(struct ofproto *ofproto, uint32_t first, uint32_t last) | |
15aaf599 | 5176 | OVS_REQUIRES(ofproto_mutex) |
6b3f7f02 JR |
5177 | { |
5178 | uint32_t mid; | |
5179 | for (mid = first; mid <= last; ++mid) { | |
5180 | struct meter *meter = ofproto->meters[mid]; | |
5181 | if (meter) { | |
5182 | ofproto->meters[mid] = NULL; | |
5183 | ofproto->ofproto_class->meter_del(ofproto, | |
5184 | meter->provider_meter_id); | |
5185 | free(meter->bands); | |
5186 | free(meter); | |
5187 | } | |
5188 | } | |
5189 | } | |
5190 | ||
9cae45dc JR |
5191 | static enum ofperr |
5192 | handle_add_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm) | |
5193 | { | |
5194 | ofproto_meter_id provider_meter_id = { UINT32_MAX }; | |
5195 | struct meter **meterp = &ofproto->meters[mm->meter.meter_id]; | |
5196 | enum ofperr error; | |
5197 | ||
5198 | if (*meterp) { | |
5199 | return OFPERR_OFPMMFC_METER_EXISTS; | |
5200 | } | |
5201 | ||
5202 | error = ofproto->ofproto_class->meter_set(ofproto, &provider_meter_id, | |
5203 | &mm->meter); | |
5204 | if (!error) { | |
5205 | ovs_assert(provider_meter_id.uint32 != UINT32_MAX); | |
5206 | *meterp = meter_create(&mm->meter, provider_meter_id); | |
5207 | } | |
f0f8c6c2 | 5208 | return error; |
9cae45dc JR |
5209 | } |
5210 | ||
5211 | static enum ofperr | |
5212 | handle_modify_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm) | |
5213 | { | |
5214 | struct meter *meter = ofproto->meters[mm->meter.meter_id]; | |
5215 | enum ofperr error; | |
e555eb7c | 5216 | uint32_t provider_meter_id; |
9cae45dc JR |
5217 | |
5218 | if (!meter) { | |
5219 | return OFPERR_OFPMMFC_UNKNOWN_METER; | |
5220 | } | |
5221 | ||
e555eb7c | 5222 | provider_meter_id = meter->provider_meter_id.uint32; |
9cae45dc JR |
5223 | error = ofproto->ofproto_class->meter_set(ofproto, |
5224 | &meter->provider_meter_id, | |
5225 | &mm->meter); | |
e555eb7c | 5226 | ovs_assert(meter->provider_meter_id.uint32 == provider_meter_id); |
9cae45dc JR |
5227 | if (!error) { |
5228 | meter_update(meter, &mm->meter); | |
5229 | } | |
5230 | return error; | |
5231 | } | |
5232 | ||
5233 | static enum ofperr | |
baae3d02 | 5234 | handle_delete_meter(struct ofconn *ofconn, struct ofputil_meter_mod *mm) |
15aaf599 | 5235 | OVS_EXCLUDED(ofproto_mutex) |
9cae45dc JR |
5236 | { |
5237 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5238 | uint32_t meter_id = mm->meter.meter_id; | |
a8e547c1 BP |
5239 | struct rule_collection rules; |
5240 | enum ofperr error = 0; | |
9cae45dc | 5241 | uint32_t first, last; |
9cae45dc JR |
5242 | |
5243 | if (meter_id == OFPM13_ALL) { | |
5244 | first = 1; | |
5245 | last = ofproto->meter_features.max_meters; | |
5246 | } else { | |
5247 | if (!meter_id || meter_id > ofproto->meter_features.max_meters) { | |
5248 | return 0; | |
5249 | } | |
5250 | first = last = meter_id; | |
5251 | } | |
5252 | ||
5253 | /* First delete the rules that use this meter. If any of those rules are | |
5254 | * currently being modified, postpone the whole operation until later. */ | |
a8e547c1 | 5255 | rule_collection_init(&rules); |
15aaf599 | 5256 | ovs_mutex_lock(&ofproto_mutex); |
9cae45dc JR |
5257 | for (meter_id = first; meter_id <= last; ++meter_id) { |
5258 | struct meter *meter = ofproto->meters[meter_id]; | |
5259 | if (meter && !list_is_empty(&meter->rules)) { | |
5260 | struct rule *rule; | |
5261 | ||
5262 | LIST_FOR_EACH (rule, meter_list_node, &meter->rules) { | |
a8e547c1 | 5263 | rule_collection_add(&rules, rule); |
9cae45dc JR |
5264 | } |
5265 | } | |
5266 | } | |
a8e547c1 | 5267 | if (rules.n > 0) { |
9ca4a86f | 5268 | delete_flows__(&rules, OFPRR_METER_DELETE, NULL); |
9cae45dc JR |
5269 | } |
5270 | ||
5271 | /* Delete the meters. */ | |
6b3f7f02 | 5272 | meter_delete(ofproto, first, last); |
9cae45dc | 5273 | |
15aaf599 | 5274 | ovs_mutex_unlock(&ofproto_mutex); |
a8e547c1 BP |
5275 | rule_collection_destroy(&rules); |
5276 | ||
5277 | return error; | |
9cae45dc JR |
5278 | } |
5279 | ||
5280 | static enum ofperr | |
5281 | handle_meter_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
5282 | { | |
5283 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5284 | struct ofputil_meter_mod mm; | |
5285 | uint64_t bands_stub[256 / 8]; | |
5286 | struct ofpbuf bands; | |
5287 | uint32_t meter_id; | |
5288 | enum ofperr error; | |
5289 | ||
5290 | error = reject_slave_controller(ofconn); | |
5291 | if (error) { | |
5292 | return error; | |
5293 | } | |
5294 | ||
5295 | ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub); | |
5296 | ||
5297 | error = ofputil_decode_meter_mod(oh, &mm, &bands); | |
5298 | if (error) { | |
5299 | goto exit_free_bands; | |
5300 | } | |
5301 | ||
5302 | meter_id = mm.meter.meter_id; | |
5303 | ||
5304 | if (mm.command != OFPMC13_DELETE) { | |
5305 | /* Fails also when meters are not implemented by the provider. */ | |
b31e8700 | 5306 | if (meter_id == 0 || meter_id > OFPM13_MAX) { |
9cae45dc JR |
5307 | error = OFPERR_OFPMMFC_INVALID_METER; |
5308 | goto exit_free_bands; | |
b31e8700 JR |
5309 | } else if (meter_id > ofproto->meter_features.max_meters) { |
5310 | error = OFPERR_OFPMMFC_OUT_OF_METERS; | |
5311 | goto exit_free_bands; | |
9cae45dc JR |
5312 | } |
5313 | if (mm.meter.n_bands > ofproto->meter_features.max_bands) { | |
5314 | error = OFPERR_OFPMMFC_OUT_OF_BANDS; | |
5315 | goto exit_free_bands; | |
5316 | } | |
5317 | } | |
5318 | ||
5319 | switch (mm.command) { | |
5320 | case OFPMC13_ADD: | |
5321 | error = handle_add_meter(ofproto, &mm); | |
5322 | break; | |
5323 | ||
5324 | case OFPMC13_MODIFY: | |
5325 | error = handle_modify_meter(ofproto, &mm); | |
5326 | break; | |
5327 | ||
5328 | case OFPMC13_DELETE: | |
baae3d02 | 5329 | error = handle_delete_meter(ofconn, &mm); |
9cae45dc JR |
5330 | break; |
5331 | ||
5332 | default: | |
5333 | error = OFPERR_OFPMMFC_BAD_COMMAND; | |
5334 | break; | |
5335 | } | |
5336 | ||
5337 | exit_free_bands: | |
5338 | ofpbuf_uninit(&bands); | |
5339 | return error; | |
5340 | } | |
5341 | ||
5342 | static enum ofperr | |
5343 | handle_meter_features_request(struct ofconn *ofconn, | |
5344 | const struct ofp_header *request) | |
5345 | { | |
5346 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5347 | struct ofputil_meter_features features; | |
5348 | struct ofpbuf *b; | |
5349 | ||
5350 | if (ofproto->ofproto_class->meter_get_features) { | |
5351 | ofproto->ofproto_class->meter_get_features(ofproto, &features); | |
5352 | } else { | |
5353 | memset(&features, 0, sizeof features); | |
5354 | } | |
5355 | b = ofputil_encode_meter_features_reply(&features, request); | |
5356 | ||
5357 | ofconn_send_reply(ofconn, b); | |
5358 | return 0; | |
5359 | } | |
5360 | ||
5361 | static enum ofperr | |
5362 | handle_meter_request(struct ofconn *ofconn, const struct ofp_header *request, | |
5363 | enum ofptype type) | |
5364 | { | |
5365 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5366 | struct list replies; | |
5367 | uint64_t bands_stub[256 / 8]; | |
5368 | struct ofpbuf bands; | |
5369 | uint32_t meter_id, first, last; | |
5370 | ||
5371 | ofputil_decode_meter_request(request, &meter_id); | |
5372 | ||
5373 | if (meter_id == OFPM13_ALL) { | |
5374 | first = 1; | |
5375 | last = ofproto->meter_features.max_meters; | |
5376 | } else { | |
5377 | if (!meter_id || meter_id > ofproto->meter_features.max_meters || | |
5378 | !ofproto->meters[meter_id]) { | |
5379 | return OFPERR_OFPMMFC_UNKNOWN_METER; | |
5380 | } | |
5381 | first = last = meter_id; | |
5382 | } | |
5383 | ||
5384 | ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub); | |
5385 | ofpmp_init(&replies, request); | |
5386 | ||
5387 | for (meter_id = first; meter_id <= last; ++meter_id) { | |
5388 | struct meter *meter = ofproto->meters[meter_id]; | |
5389 | if (!meter) { | |
5390 | continue; /* Skip non-existing meters. */ | |
5391 | } | |
261bd854 | 5392 | if (type == OFPTYPE_METER_STATS_REQUEST) { |
9cae45dc JR |
5393 | struct ofputil_meter_stats stats; |
5394 | ||
5395 | stats.meter_id = meter_id; | |
5396 | ||
5397 | /* Provider sets the packet and byte counts, we do the rest. */ | |
5398 | stats.flow_count = list_size(&meter->rules); | |
5399 | calc_duration(meter->created, time_msec(), | |
5400 | &stats.duration_sec, &stats.duration_nsec); | |
5401 | stats.n_bands = meter->n_bands; | |
5402 | ofpbuf_clear(&bands); | |
5403 | stats.bands | |
5404 | = ofpbuf_put_uninit(&bands, | |
5405 | meter->n_bands * sizeof *stats.bands); | |
5406 | ||
5407 | if (!ofproto->ofproto_class->meter_get(ofproto, | |
5408 | meter->provider_meter_id, | |
5409 | &stats)) { | |
5410 | ofputil_append_meter_stats(&replies, &stats); | |
5411 | } | |
5412 | } else { /* type == OFPTYPE_METER_CONFIG_REQUEST */ | |
5413 | struct ofputil_meter_config config; | |
5414 | ||
5415 | config.meter_id = meter_id; | |
5416 | config.flags = meter->flags; | |
5417 | config.n_bands = meter->n_bands; | |
5418 | config.bands = meter->bands; | |
5419 | ofputil_append_meter_config(&replies, &config); | |
5420 | } | |
5421 | } | |
5422 | ||
5423 | ofconn_send_replies(ofconn, &replies); | |
5424 | ofpbuf_uninit(&bands); | |
5425 | return 0; | |
5426 | } | |
5427 | ||
3fc3b679 AZ |
5428 | static bool |
5429 | ofproto_group_lookup__(const struct ofproto *ofproto, uint32_t group_id, | |
5430 | struct ofgroup **group) | |
5431 | OVS_REQ_RDLOCK(ofproto->groups_rwlock) | |
7395c052 | 5432 | { |
7395c052 NZ |
5433 | HMAP_FOR_EACH_IN_BUCKET (*group, hmap_node, |
5434 | hash_int(group_id, 0), &ofproto->groups) { | |
5435 | if ((*group)->group_id == group_id) { | |
7395c052 NZ |
5436 | return true; |
5437 | } | |
5438 | } | |
3fc3b679 | 5439 | |
7395c052 NZ |
5440 | return false; |
5441 | } | |
5442 | ||
3fc3b679 AZ |
5443 | /* If the group exists, this function increments the groups's reference count. |
5444 | * | |
5445 | * Make sure to call ofproto_group_unref() after no longer needing to maintain | |
5446 | * a reference to the group. */ | |
5447 | bool | |
5448 | ofproto_group_lookup(const struct ofproto *ofproto, uint32_t group_id, | |
5449 | struct ofgroup **group) | |
7395c052 | 5450 | { |
3fc3b679 AZ |
5451 | bool found; |
5452 | ||
5453 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
5454 | found = ofproto_group_lookup__(ofproto, group_id, group); | |
5455 | if (found) { | |
5456 | ofproto_group_ref(*group); | |
7395c052 | 5457 | } |
3fc3b679 AZ |
5458 | ovs_rwlock_unlock(&ofproto->groups_rwlock); |
5459 | return found; | |
7395c052 NZ |
5460 | } |
5461 | ||
5462 | static bool | |
7e9f8266 | 5463 | ofproto_group_exists__(const struct ofproto *ofproto, uint32_t group_id) |
7395c052 NZ |
5464 | OVS_REQ_RDLOCK(ofproto->groups_rwlock) |
5465 | { | |
5466 | struct ofgroup *grp; | |
5467 | ||
5468 | HMAP_FOR_EACH_IN_BUCKET (grp, hmap_node, | |
5469 | hash_int(group_id, 0), &ofproto->groups) { | |
5470 | if (grp->group_id == group_id) { | |
5471 | return true; | |
5472 | } | |
5473 | } | |
5474 | return false; | |
5475 | } | |
5476 | ||
7e9f8266 BP |
5477 | static bool |
5478 | ofproto_group_exists(const struct ofproto *ofproto, uint32_t group_id) | |
5479 | OVS_EXCLUDED(ofproto->groups_rwlock) | |
5480 | { | |
5481 | bool exists; | |
5482 | ||
5483 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
5484 | exists = ofproto_group_exists__(ofproto, group_id); | |
5485 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5486 | ||
5487 | return exists; | |
5488 | } | |
5489 | ||
732feb93 SH |
5490 | static uint32_t |
5491 | group_get_ref_count(struct ofgroup *group) | |
5492 | OVS_EXCLUDED(ofproto_mutex) | |
5493 | { | |
eaf004bd | 5494 | struct ofproto *ofproto = CONST_CAST(struct ofproto *, group->ofproto); |
732feb93 SH |
5495 | struct rule_criteria criteria; |
5496 | struct rule_collection rules; | |
5497 | struct match match; | |
5498 | enum ofperr error; | |
5499 | uint32_t count; | |
5500 | ||
5501 | match_init_catchall(&match); | |
5502 | rule_criteria_init(&criteria, 0xff, &match, 0, htonll(0), htonll(0), | |
5503 | OFPP_ANY, group->group_id); | |
5504 | ovs_mutex_lock(&ofproto_mutex); | |
5505 | error = collect_rules_loose(ofproto, &criteria, &rules); | |
5506 | ovs_mutex_unlock(&ofproto_mutex); | |
5507 | rule_criteria_destroy(&criteria); | |
5508 | ||
5509 | count = !error && rules.n < UINT32_MAX ? rules.n : UINT32_MAX; | |
5510 | ||
5511 | rule_collection_destroy(&rules); | |
5512 | return count; | |
5513 | } | |
5514 | ||
7395c052 NZ |
5515 | static void |
5516 | append_group_stats(struct ofgroup *group, struct list *replies) | |
7395c052 NZ |
5517 | { |
5518 | struct ofputil_group_stats ogs; | |
eaf004bd | 5519 | const struct ofproto *ofproto = group->ofproto; |
7395c052 NZ |
5520 | long long int now = time_msec(); |
5521 | int error; | |
5522 | ||
646b2a9c SH |
5523 | ogs.bucket_stats = xmalloc(group->n_buckets * sizeof *ogs.bucket_stats); |
5524 | ||
732feb93 SH |
5525 | /* Provider sets the packet and byte counts, we do the rest. */ |
5526 | ogs.ref_count = group_get_ref_count(group); | |
5527 | ogs.n_buckets = group->n_buckets; | |
5528 | ||
7395c052 NZ |
5529 | error = (ofproto->ofproto_class->group_get_stats |
5530 | ? ofproto->ofproto_class->group_get_stats(group, &ogs) | |
5531 | : EOPNOTSUPP); | |
5532 | if (error) { | |
7395c052 NZ |
5533 | ogs.packet_count = UINT64_MAX; |
5534 | ogs.byte_count = UINT64_MAX; | |
7395c052 NZ |
5535 | memset(ogs.bucket_stats, 0xff, |
5536 | ogs.n_buckets * sizeof *ogs.bucket_stats); | |
5537 | } | |
5538 | ||
5539 | ogs.group_id = group->group_id; | |
5540 | calc_duration(group->created, now, &ogs.duration_sec, &ogs.duration_nsec); | |
5541 | ||
5542 | ofputil_append_group_stats(replies, &ogs); | |
646b2a9c SH |
5543 | |
5544 | free(ogs.bucket_stats); | |
7395c052 NZ |
5545 | } |
5546 | ||
19187a71 BP |
5547 | static void |
5548 | handle_group_request(struct ofconn *ofconn, | |
5549 | const struct ofp_header *request, uint32_t group_id, | |
5550 | void (*cb)(struct ofgroup *, struct list *replies)) | |
7395c052 NZ |
5551 | { |
5552 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
7395c052 | 5553 | struct ofgroup *group; |
19187a71 | 5554 | struct list replies; |
7395c052 NZ |
5555 | |
5556 | ofpmp_init(&replies, request); | |
7395c052 NZ |
5557 | if (group_id == OFPG_ALL) { |
5558 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
5559 | HMAP_FOR_EACH (group, hmap_node, &ofproto->groups) { | |
19187a71 | 5560 | cb(group, &replies); |
7395c052 NZ |
5561 | } |
5562 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5563 | } else { | |
5564 | if (ofproto_group_lookup(ofproto, group_id, &group)) { | |
19187a71 | 5565 | cb(group, &replies); |
809c7548 | 5566 | ofproto_group_unref(group); |
7395c052 NZ |
5567 | } |
5568 | } | |
7395c052 | 5569 | ofconn_send_replies(ofconn, &replies); |
7395c052 NZ |
5570 | } |
5571 | ||
5572 | static enum ofperr | |
19187a71 BP |
5573 | handle_group_stats_request(struct ofconn *ofconn, |
5574 | const struct ofp_header *request) | |
7395c052 | 5575 | { |
19187a71 BP |
5576 | uint32_t group_id; |
5577 | enum ofperr error; | |
7395c052 | 5578 | |
19187a71 BP |
5579 | error = ofputil_decode_group_stats_request(request, &group_id); |
5580 | if (error) { | |
5581 | return error; | |
7395c052 | 5582 | } |
7395c052 | 5583 | |
19187a71 BP |
5584 | handle_group_request(ofconn, request, group_id, append_group_stats); |
5585 | return 0; | |
5586 | } | |
5587 | ||
5588 | static void | |
5589 | append_group_desc(struct ofgroup *group, struct list *replies) | |
5590 | { | |
5591 | struct ofputil_group_desc gds; | |
7395c052 | 5592 | |
19187a71 BP |
5593 | gds.group_id = group->group_id; |
5594 | gds.type = group->type; | |
5595 | ofputil_append_group_desc_reply(&gds, &group->buckets, replies); | |
5596 | } | |
5597 | ||
5598 | static enum ofperr | |
5599 | handle_group_desc_stats_request(struct ofconn *ofconn, | |
5600 | const struct ofp_header *request) | |
5601 | { | |
5602 | handle_group_request(ofconn, request, | |
5603 | ofputil_decode_group_desc_request(request), | |
5604 | append_group_desc); | |
7395c052 NZ |
5605 | return 0; |
5606 | } | |
5607 | ||
5608 | static enum ofperr | |
5609 | handle_group_features_stats_request(struct ofconn *ofconn, | |
5610 | const struct ofp_header *request) | |
5611 | { | |
5612 | struct ofproto *p = ofconn_get_ofproto(ofconn); | |
5613 | struct ofpbuf *msg; | |
5614 | ||
5615 | msg = ofputil_encode_group_features_reply(&p->ogf, request); | |
5616 | if (msg) { | |
5617 | ofconn_send_reply(ofconn, msg); | |
5618 | } | |
5619 | ||
5620 | return 0; | |
5621 | } | |
5622 | ||
e8f9a7bb VG |
5623 | static enum ofperr |
5624 | handle_queue_get_config_request(struct ofconn *ofconn, | |
5625 | const struct ofp_header *oh) | |
5626 | { | |
5627 | struct ofproto *p = ofconn_get_ofproto(ofconn); | |
5628 | struct netdev_queue_dump queue_dump; | |
5629 | struct ofport *ofport; | |
5630 | unsigned int queue_id; | |
5631 | struct ofpbuf *reply; | |
5632 | struct smap details; | |
5633 | ofp_port_t request; | |
5634 | enum ofperr error; | |
5635 | ||
5636 | error = ofputil_decode_queue_get_config_request(oh, &request); | |
5637 | if (error) { | |
5638 | return error; | |
5639 | } | |
5640 | ||
5641 | ofport = ofproto_get_port(p, request); | |
5642 | if (!ofport) { | |
5643 | return OFPERR_OFPQOFC_BAD_PORT; | |
5644 | } | |
5645 | ||
5646 | reply = ofputil_encode_queue_get_config_reply(oh); | |
5647 | ||
5648 | smap_init(&details); | |
5649 | NETDEV_QUEUE_FOR_EACH (&queue_id, &details, &queue_dump, ofport->netdev) { | |
5650 | struct ofputil_queue_config queue; | |
5651 | ||
5652 | /* None of the existing queues have compatible properties, so we | |
5653 | * hard-code omitting min_rate and max_rate. */ | |
5654 | queue.queue_id = queue_id; | |
5655 | queue.min_rate = UINT16_MAX; | |
5656 | queue.max_rate = UINT16_MAX; | |
5657 | ofputil_append_queue_get_config_reply(reply, &queue); | |
5658 | } | |
5659 | smap_destroy(&details); | |
5660 | ||
5661 | ofconn_send_reply(ofconn, reply); | |
5662 | ||
5663 | return 0; | |
5664 | } | |
5665 | ||
809c7548 RW |
5666 | static enum ofperr |
5667 | init_group(struct ofproto *ofproto, struct ofputil_group_mod *gm, | |
5668 | struct ofgroup **ofgroup) | |
5669 | { | |
5670 | enum ofperr error; | |
eaf004bd | 5671 | const long long int now = time_msec(); |
809c7548 RW |
5672 | |
5673 | if (gm->group_id > OFPG_MAX) { | |
5674 | return OFPERR_OFPGMFC_INVALID_GROUP; | |
5675 | } | |
5676 | if (gm->type > OFPGT11_FF) { | |
5677 | return OFPERR_OFPGMFC_BAD_TYPE; | |
5678 | } | |
5679 | ||
5680 | *ofgroup = ofproto->ofproto_class->group_alloc(); | |
5681 | if (!*ofgroup) { | |
5682 | VLOG_WARN_RL(&rl, "%s: failed to allocate group", ofproto->name); | |
5683 | return OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
5684 | } | |
5685 | ||
eaf004bd AZ |
5686 | (*ofgroup)->ofproto = ofproto; |
5687 | *CONST_CAST(uint32_t *, &((*ofgroup)->group_id)) = gm->group_id; | |
5688 | *CONST_CAST(enum ofp11_group_type *, &(*ofgroup)->type) = gm->type; | |
5689 | *CONST_CAST(long long int *, &((*ofgroup)->created)) = now; | |
5690 | *CONST_CAST(long long int *, &((*ofgroup)->modified)) = now; | |
809c7548 RW |
5691 | ovs_refcount_init(&(*ofgroup)->ref_count); |
5692 | ||
5693 | list_move(&(*ofgroup)->buckets, &gm->buckets); | |
eaf004bd AZ |
5694 | *CONST_CAST(uint32_t *, &(*ofgroup)->n_buckets) = |
5695 | list_size(&(*ofgroup)->buckets); | |
809c7548 RW |
5696 | |
5697 | /* Construct called BEFORE any locks are held. */ | |
5698 | error = ofproto->ofproto_class->group_construct(*ofgroup); | |
5699 | if (error) { | |
5700 | ofputil_bucket_list_destroy(&(*ofgroup)->buckets); | |
5701 | ofproto->ofproto_class->group_dealloc(*ofgroup); | |
5702 | } | |
5703 | return error; | |
5704 | } | |
5705 | ||
6c5b90ce BP |
5706 | /* Implements the OFPGC11_ADD operation specified by 'gm', adding a group to |
5707 | * 'ofproto''s group table. Returns 0 on success or an OpenFlow error code on | |
5708 | * failure. */ | |
7395c052 NZ |
5709 | static enum ofperr |
5710 | add_group(struct ofproto *ofproto, struct ofputil_group_mod *gm) | |
5711 | { | |
5712 | struct ofgroup *ofgroup; | |
5713 | enum ofperr error; | |
5714 | ||
7395c052 | 5715 | /* Allocate new group and initialize it. */ |
809c7548 | 5716 | error = init_group(ofproto, gm, &ofgroup); |
7395c052 | 5717 | if (error) { |
809c7548 | 5718 | return error; |
7395c052 NZ |
5719 | } |
5720 | ||
5721 | /* We wrlock as late as possible to minimize the time we jam any other | |
5722 | * threads: No visible state changes before acquiring the lock. */ | |
5723 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
5724 | ||
5725 | if (ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) { | |
5726 | error = OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
5727 | goto unlock_out; | |
5728 | } | |
5729 | ||
7e9f8266 | 5730 | if (ofproto_group_exists__(ofproto, gm->group_id)) { |
7395c052 NZ |
5731 | error = OFPERR_OFPGMFC_GROUP_EXISTS; |
5732 | goto unlock_out; | |
5733 | } | |
5734 | ||
5735 | if (!error) { | |
5736 | /* Insert new group. */ | |
5737 | hmap_insert(&ofproto->groups, &ofgroup->hmap_node, | |
5738 | hash_int(ofgroup->group_id, 0)); | |
5739 | ofproto->n_groups[ofgroup->type]++; | |
5740 | ||
5741 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5742 | return error; | |
5743 | } | |
5744 | ||
5745 | unlock_out: | |
5746 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5747 | ofproto->ofproto_class->group_destruct(ofgroup); | |
7395c052 NZ |
5748 | ofputil_bucket_list_destroy(&ofgroup->buckets); |
5749 | ofproto->ofproto_class->group_dealloc(ofgroup); | |
5750 | ||
5751 | return error; | |
5752 | } | |
5753 | ||
6c5b90ce BP |
5754 | /* Implements OFPGC11_MODIFY. Returns 0 on success or an OpenFlow error code |
5755 | * on failure. | |
7395c052 | 5756 | * |
809c7548 RW |
5757 | * Note that the group is re-created and then replaces the old group in |
5758 | * ofproto's ofgroup hash map. Thus, the group is never altered while users of | |
6c5b90ce | 5759 | * the xlate module hold a pointer to the group. */ |
7395c052 NZ |
5760 | static enum ofperr |
5761 | modify_group(struct ofproto *ofproto, struct ofputil_group_mod *gm) | |
5762 | { | |
809c7548 | 5763 | struct ofgroup *ofgroup, *new_ofgroup, *retiring; |
7395c052 NZ |
5764 | enum ofperr error; |
5765 | ||
809c7548 RW |
5766 | error = init_group(ofproto, gm, &new_ofgroup); |
5767 | if (error) { | |
5768 | return error; | |
7395c052 NZ |
5769 | } |
5770 | ||
809c7548 | 5771 | retiring = new_ofgroup; |
7395c052 | 5772 | |
3fc3b679 AZ |
5773 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); |
5774 | if (!ofproto_group_lookup__(ofproto, gm->group_id, &ofgroup)) { | |
7395c052 | 5775 | error = OFPERR_OFPGMFC_UNKNOWN_GROUP; |
809c7548 | 5776 | goto out; |
7395c052 | 5777 | } |
809c7548 RW |
5778 | |
5779 | /* Ofproto's group write lock is held now. */ | |
7395c052 NZ |
5780 | if (ofgroup->type != gm->type |
5781 | && ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) { | |
5782 | error = OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
809c7548 | 5783 | goto out; |
7395c052 NZ |
5784 | } |
5785 | ||
809c7548 | 5786 | /* The group creation time does not change during modification. */ |
eaf004bd AZ |
5787 | *CONST_CAST(long long int *, &(new_ofgroup->created)) = ofgroup->created; |
5788 | *CONST_CAST(long long int *, &(new_ofgroup->modified)) = time_msec(); | |
7395c052 | 5789 | |
809c7548 RW |
5790 | error = ofproto->ofproto_class->group_modify(new_ofgroup); |
5791 | if (error) { | |
5792 | goto out; | |
5793 | } | |
7395c052 | 5794 | |
809c7548 RW |
5795 | retiring = ofgroup; |
5796 | /* Replace ofgroup in ofproto's groups hash map with new_ofgroup. */ | |
5797 | hmap_remove(&ofproto->groups, &ofgroup->hmap_node); | |
5798 | hmap_insert(&ofproto->groups, &new_ofgroup->hmap_node, | |
5799 | hash_int(new_ofgroup->group_id, 0)); | |
5800 | if (ofgroup->type != new_ofgroup->type) { | |
5801 | ofproto->n_groups[ofgroup->type]--; | |
5802 | ofproto->n_groups[new_ofgroup->type]++; | |
7395c052 NZ |
5803 | } |
5804 | ||
809c7548 RW |
5805 | out: |
5806 | ofproto_group_unref(retiring); | |
7395c052 | 5807 | ovs_rwlock_unlock(&ofproto->groups_rwlock); |
7395c052 NZ |
5808 | return error; |
5809 | } | |
5810 | ||
5811 | static void | |
5812 | delete_group__(struct ofproto *ofproto, struct ofgroup *ofgroup) | |
5813 | OVS_RELEASES(ofproto->groups_rwlock) | |
5814 | { | |
276f6518 SH |
5815 | struct match match; |
5816 | struct ofputil_flow_mod fm; | |
5817 | ||
5818 | /* Delete all flow entries containing this group in a group action */ | |
5819 | match_init_catchall(&match); | |
5820 | flow_mod_init(&fm, &match, 0, NULL, 0, OFPFC_DELETE); | |
cc40d06b | 5821 | fm.delete_reason = OFPRR_GROUP_DELETE; |
276f6518 | 5822 | fm.out_group = ofgroup->group_id; |
baae3d02 | 5823 | handle_flow_mod__(ofproto, &fm, NULL); |
276f6518 | 5824 | |
7395c052 NZ |
5825 | hmap_remove(&ofproto->groups, &ofgroup->hmap_node); |
5826 | /* No-one can find this group any more. */ | |
5827 | ofproto->n_groups[ofgroup->type]--; | |
5828 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
809c7548 | 5829 | ofproto_group_unref(ofgroup); |
7395c052 NZ |
5830 | } |
5831 | ||
6c5b90ce | 5832 | /* Implements OFPGC11_DELETE. */ |
7395c052 NZ |
5833 | static void |
5834 | delete_group(struct ofproto *ofproto, uint32_t group_id) | |
5835 | { | |
5836 | struct ofgroup *ofgroup; | |
5837 | ||
5838 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
5839 | if (group_id == OFPG_ALL) { | |
5840 | for (;;) { | |
5841 | struct hmap_node *node = hmap_first(&ofproto->groups); | |
5842 | if (!node) { | |
5843 | break; | |
5844 | } | |
5845 | ofgroup = CONTAINER_OF(node, struct ofgroup, hmap_node); | |
5846 | delete_group__(ofproto, ofgroup); | |
5847 | /* Lock for each node separately, so that we will not jam the | |
5848 | * other threads for too long time. */ | |
5849 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
5850 | } | |
5851 | } else { | |
5852 | HMAP_FOR_EACH_IN_BUCKET (ofgroup, hmap_node, | |
5853 | hash_int(group_id, 0), &ofproto->groups) { | |
5854 | if (ofgroup->group_id == group_id) { | |
5855 | delete_group__(ofproto, ofgroup); | |
5856 | return; | |
5857 | } | |
5858 | } | |
5859 | } | |
5860 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5861 | } | |
5862 | ||
5863 | static enum ofperr | |
5864 | handle_group_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
5865 | { | |
5866 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5867 | struct ofputil_group_mod gm; | |
5868 | enum ofperr error; | |
5869 | ||
5870 | error = reject_slave_controller(ofconn); | |
5871 | if (error) { | |
5872 | return error; | |
5873 | } | |
5874 | ||
5875 | error = ofputil_decode_group_mod(oh, &gm); | |
5876 | if (error) { | |
5877 | return error; | |
5878 | } | |
5879 | ||
5880 | switch (gm.command) { | |
5881 | case OFPGC11_ADD: | |
5882 | return add_group(ofproto, &gm); | |
5883 | ||
5884 | case OFPGC11_MODIFY: | |
5885 | return modify_group(ofproto, &gm); | |
5886 | ||
5887 | case OFPGC11_DELETE: | |
5888 | delete_group(ofproto, gm.group_id); | |
5889 | return 0; | |
5890 | ||
5891 | default: | |
5892 | if (gm.command > OFPGC11_DELETE) { | |
5893 | VLOG_WARN_RL(&rl, "%s: Invalid group_mod command type %d", | |
5894 | ofproto->name, gm.command); | |
5895 | } | |
5896 | return OFPERR_OFPGMFC_BAD_COMMAND; | |
5897 | } | |
5898 | } | |
5899 | ||
3c1bb396 BP |
5900 | enum ofputil_table_miss |
5901 | ofproto_table_get_miss_config(const struct ofproto *ofproto, uint8_t table_id) | |
6d328fa2 | 5902 | { |
3c1bb396 | 5903 | enum ofputil_table_miss value; |
afcea9ea JR |
5904 | |
5905 | atomic_read_relaxed(&ofproto->tables[table_id].miss_config, &value); | |
3c1bb396 | 5906 | return value; |
6d328fa2 SH |
5907 | } |
5908 | ||
67761761 SH |
5909 | static enum ofperr |
5910 | table_mod(struct ofproto *ofproto, const struct ofputil_table_mod *tm) | |
5911 | { | |
3c1bb396 | 5912 | if (!check_table_id(ofproto, tm->table_id)) { |
67761761 | 5913 | return OFPERR_OFPTMFC_BAD_TABLE; |
3c1bb396 BP |
5914 | } else if (tm->miss_config != OFPUTIL_TABLE_MISS_DEFAULT) { |
5915 | if (tm->table_id == OFPTT_ALL) { | |
5916 | int i; | |
5917 | for (i = 0; i < ofproto->n_tables; i++) { | |
afcea9ea JR |
5918 | atomic_store_relaxed(&ofproto->tables[i].miss_config, |
5919 | tm->miss_config); | |
3c1bb396 BP |
5920 | } |
5921 | } else { | |
afcea9ea JR |
5922 | atomic_store_relaxed(&ofproto->tables[tm->table_id].miss_config, |
5923 | tm->miss_config); | |
3c1bb396 | 5924 | } |
67761761 | 5925 | } |
67761761 SH |
5926 | return 0; |
5927 | } | |
5928 | ||
918f2b82 AZ |
5929 | static enum ofperr |
5930 | handle_table_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
5931 | { | |
67761761 | 5932 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
918f2b82 AZ |
5933 | struct ofputil_table_mod tm; |
5934 | enum ofperr error; | |
5935 | ||
5936 | error = reject_slave_controller(ofconn); | |
5937 | if (error) { | |
5938 | return error; | |
5939 | } | |
5940 | ||
5941 | error = ofputil_decode_table_mod(oh, &tm); | |
5942 | if (error) { | |
5943 | return error; | |
5944 | } | |
5945 | ||
67761761 | 5946 | return table_mod(ofproto, &tm); |
918f2b82 AZ |
5947 | } |
5948 | ||
777af88d AC |
5949 | static enum ofperr |
5950 | handle_bundle_control(struct ofconn *ofconn, const struct ofp_header *oh) | |
5951 | { | |
5952 | enum ofperr error; | |
5953 | struct ofputil_bundle_ctrl_msg bctrl; | |
5954 | struct ofpbuf *buf; | |
5955 | struct ofputil_bundle_ctrl_msg reply; | |
5956 | ||
5957 | error = ofputil_decode_bundle_ctrl(oh, &bctrl); | |
5958 | if (error) { | |
5959 | return error; | |
5960 | } | |
5961 | reply.flags = 0; | |
5962 | reply.bundle_id = bctrl.bundle_id; | |
5963 | ||
5964 | switch (bctrl.type) { | |
5965 | case OFPBCT_OPEN_REQUEST: | |
5966 | error = ofp_bundle_open(ofconn, bctrl.bundle_id, bctrl.flags); | |
5967 | reply.type = OFPBCT_OPEN_REPLY; | |
5968 | break; | |
5969 | case OFPBCT_CLOSE_REQUEST: | |
5970 | error = ofp_bundle_close(ofconn, bctrl.bundle_id, bctrl.flags); | |
5971 | reply.type = OFPBCT_CLOSE_REPLY;; | |
5972 | break; | |
5973 | case OFPBCT_COMMIT_REQUEST: | |
5974 | error = ofp_bundle_commit(ofconn, bctrl.bundle_id, bctrl.flags); | |
5975 | reply.type = OFPBCT_COMMIT_REPLY; | |
5976 | break; | |
5977 | case OFPBCT_DISCARD_REQUEST: | |
5978 | error = ofp_bundle_discard(ofconn, bctrl.bundle_id); | |
5979 | reply.type = OFPBCT_DISCARD_REPLY; | |
5980 | break; | |
5981 | ||
5982 | case OFPBCT_OPEN_REPLY: | |
5983 | case OFPBCT_CLOSE_REPLY: | |
5984 | case OFPBCT_COMMIT_REPLY: | |
5985 | case OFPBCT_DISCARD_REPLY: | |
5986 | return OFPERR_OFPBFC_BAD_TYPE; | |
5987 | break; | |
5988 | } | |
5989 | ||
5990 | if (!error) { | |
5991 | buf = ofputil_encode_bundle_ctrl_reply(oh, &reply); | |
5992 | ofconn_send_reply(ofconn, buf); | |
5993 | } | |
5994 | return error; | |
5995 | } | |
5996 | ||
5997 | ||
5998 | static enum ofperr | |
5999 | handle_bundle_add(struct ofconn *ofconn, const struct ofp_header *oh) | |
6000 | { | |
6001 | enum ofperr error; | |
6002 | struct ofputil_bundle_add_msg badd; | |
6003 | ||
6004 | error = ofputil_decode_bundle_add(oh, &badd); | |
6005 | if (error) { | |
6006 | return error; | |
6007 | } | |
6008 | ||
6009 | return ofp_bundle_add_message(ofconn, &badd); | |
6010 | } | |
6011 | ||
90bf1e07 | 6012 | static enum ofperr |
d1e2cf21 | 6013 | handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg) |
15aaf599 | 6014 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 6015 | { |
1f317cb5 | 6016 | const struct ofp_header *oh = ofpbuf_data(msg); |
982697a4 | 6017 | enum ofptype type; |
90bf1e07 | 6018 | enum ofperr error; |
064af421 | 6019 | |
982697a4 | 6020 | error = ofptype_decode(&type, oh); |
d1e2cf21 BP |
6021 | if (error) { |
6022 | return error; | |
6023 | } | |
ff3c2c63 YT |
6024 | if (oh->version >= OFP13_VERSION && ofpmsg_is_stat_request(oh) |
6025 | && ofpmp_more(oh)) { | |
6026 | /* We have no buffer implementation for multipart requests. | |
6027 | * Report overflow for requests which consists of multiple | |
6028 | * messages. */ | |
6029 | return OFPERR_OFPBRC_MULTIPART_BUFFER_OVERFLOW; | |
6030 | } | |
064af421 | 6031 | |
982697a4 | 6032 | switch (type) { |
d1e2cf21 | 6033 | /* OpenFlow requests. */ |
982697a4 | 6034 | case OFPTYPE_ECHO_REQUEST: |
d1e2cf21 | 6035 | return handle_echo_request(ofconn, oh); |
064af421 | 6036 | |
982697a4 | 6037 | case OFPTYPE_FEATURES_REQUEST: |
d1e2cf21 | 6038 | return handle_features_request(ofconn, oh); |
064af421 | 6039 | |
982697a4 | 6040 | case OFPTYPE_GET_CONFIG_REQUEST: |
d1e2cf21 | 6041 | return handle_get_config_request(ofconn, oh); |
064af421 | 6042 | |
982697a4 BP |
6043 | case OFPTYPE_SET_CONFIG: |
6044 | return handle_set_config(ofconn, oh); | |
064af421 | 6045 | |
982697a4 BP |
6046 | case OFPTYPE_PACKET_OUT: |
6047 | return handle_packet_out(ofconn, oh); | |
064af421 | 6048 | |
982697a4 | 6049 | case OFPTYPE_PORT_MOD: |
d1e2cf21 | 6050 | return handle_port_mod(ofconn, oh); |
064af421 | 6051 | |
982697a4 | 6052 | case OFPTYPE_FLOW_MOD: |
2e4f5fcf | 6053 | return handle_flow_mod(ofconn, oh); |
064af421 | 6054 | |
7395c052 NZ |
6055 | case OFPTYPE_GROUP_MOD: |
6056 | return handle_group_mod(ofconn, oh); | |
6057 | ||
918f2b82 AZ |
6058 | case OFPTYPE_TABLE_MOD: |
6059 | return handle_table_mod(ofconn, oh); | |
6060 | ||
9cae45dc JR |
6061 | case OFPTYPE_METER_MOD: |
6062 | return handle_meter_mod(ofconn, oh); | |
6063 | ||
982697a4 | 6064 | case OFPTYPE_BARRIER_REQUEST: |
d1e2cf21 | 6065 | return handle_barrier_request(ofconn, oh); |
064af421 | 6066 | |
6ea4776b JR |
6067 | case OFPTYPE_ROLE_REQUEST: |
6068 | return handle_role_request(ofconn, oh); | |
6069 | ||
d1e2cf21 | 6070 | /* OpenFlow replies. */ |
982697a4 | 6071 | case OFPTYPE_ECHO_REPLY: |
d1e2cf21 | 6072 | return 0; |
246e61ea | 6073 | |
d1e2cf21 | 6074 | /* Nicira extension requests. */ |
982697a4 | 6075 | case OFPTYPE_FLOW_MOD_TABLE_ID: |
6c1491fb | 6076 | return handle_nxt_flow_mod_table_id(ofconn, oh); |
d1e2cf21 | 6077 | |
982697a4 | 6078 | case OFPTYPE_SET_FLOW_FORMAT: |
d1e2cf21 BP |
6079 | return handle_nxt_set_flow_format(ofconn, oh); |
6080 | ||
982697a4 | 6081 | case OFPTYPE_SET_PACKET_IN_FORMAT: |
54834960 EJ |
6082 | return handle_nxt_set_packet_in_format(ofconn, oh); |
6083 | ||
982697a4 | 6084 | case OFPTYPE_SET_CONTROLLER_ID: |
a7349929 BP |
6085 | return handle_nxt_set_controller_id(ofconn, oh); |
6086 | ||
982697a4 | 6087 | case OFPTYPE_FLOW_AGE: |
f27f2134 BP |
6088 | /* Nothing to do. */ |
6089 | return 0; | |
6090 | ||
982697a4 | 6091 | case OFPTYPE_FLOW_MONITOR_CANCEL: |
2b07c8b1 BP |
6092 | return handle_flow_monitor_cancel(ofconn, oh); |
6093 | ||
982697a4 | 6094 | case OFPTYPE_SET_ASYNC_CONFIG: |
80d5aefd BP |
6095 | return handle_nxt_set_async_config(ofconn, oh); |
6096 | ||
c423b3b3 AC |
6097 | case OFPTYPE_GET_ASYNC_REQUEST: |
6098 | return handle_nxt_get_async_request(ofconn, oh); | |
6099 | ||
349adfb2 | 6100 | /* Statistics requests. */ |
982697a4 BP |
6101 | case OFPTYPE_DESC_STATS_REQUEST: |
6102 | return handle_desc_stats_request(ofconn, oh); | |
6103 | ||
6104 | case OFPTYPE_FLOW_STATS_REQUEST: | |
6105 | return handle_flow_stats_request(ofconn, oh); | |
6106 | ||
6107 | case OFPTYPE_AGGREGATE_STATS_REQUEST: | |
6108 | return handle_aggregate_stats_request(ofconn, oh); | |
6109 | ||
6110 | case OFPTYPE_TABLE_STATS_REQUEST: | |
6111 | return handle_table_stats_request(ofconn, oh); | |
6112 | ||
3c4e10fb BP |
6113 | case OFPTYPE_TABLE_FEATURES_STATS_REQUEST: |
6114 | return handle_table_features_request(ofconn, oh); | |
6115 | ||
982697a4 BP |
6116 | case OFPTYPE_PORT_STATS_REQUEST: |
6117 | return handle_port_stats_request(ofconn, oh); | |
6118 | ||
6119 | case OFPTYPE_QUEUE_STATS_REQUEST: | |
6120 | return handle_queue_stats_request(ofconn, oh); | |
6121 | ||
6122 | case OFPTYPE_PORT_DESC_STATS_REQUEST: | |
6123 | return handle_port_desc_stats_request(ofconn, oh); | |
6124 | ||
6125 | case OFPTYPE_FLOW_MONITOR_STATS_REQUEST: | |
6126 | return handle_flow_monitor_request(ofconn, oh); | |
6127 | ||
261bd854 BP |
6128 | case OFPTYPE_METER_STATS_REQUEST: |
6129 | case OFPTYPE_METER_CONFIG_STATS_REQUEST: | |
9cae45dc JR |
6130 | return handle_meter_request(ofconn, oh, type); |
6131 | ||
261bd854 | 6132 | case OFPTYPE_METER_FEATURES_STATS_REQUEST: |
9cae45dc JR |
6133 | return handle_meter_features_request(ofconn, oh); |
6134 | ||
261bd854 | 6135 | case OFPTYPE_GROUP_STATS_REQUEST: |
7395c052 NZ |
6136 | return handle_group_stats_request(ofconn, oh); |
6137 | ||
261bd854 | 6138 | case OFPTYPE_GROUP_DESC_STATS_REQUEST: |
7395c052 NZ |
6139 | return handle_group_desc_stats_request(ofconn, oh); |
6140 | ||
261bd854 | 6141 | case OFPTYPE_GROUP_FEATURES_STATS_REQUEST: |
7395c052 NZ |
6142 | return handle_group_features_stats_request(ofconn, oh); |
6143 | ||
7395c052 | 6144 | case OFPTYPE_QUEUE_GET_CONFIG_REQUEST: |
e8f9a7bb | 6145 | return handle_queue_get_config_request(ofconn, oh); |
2e1ae200 | 6146 | |
777af88d AC |
6147 | case OFPTYPE_BUNDLE_CONTROL: |
6148 | return handle_bundle_control(ofconn, oh); | |
6149 | ||
6150 | case OFPTYPE_BUNDLE_ADD_MESSAGE: | |
6151 | return handle_bundle_add(ofconn, oh); | |
6152 | ||
982697a4 BP |
6153 | case OFPTYPE_HELLO: |
6154 | case OFPTYPE_ERROR: | |
6155 | case OFPTYPE_FEATURES_REPLY: | |
6156 | case OFPTYPE_GET_CONFIG_REPLY: | |
6157 | case OFPTYPE_PACKET_IN: | |
6158 | case OFPTYPE_FLOW_REMOVED: | |
6159 | case OFPTYPE_PORT_STATUS: | |
6160 | case OFPTYPE_BARRIER_REPLY: | |
c545d38d | 6161 | case OFPTYPE_QUEUE_GET_CONFIG_REPLY: |
982697a4 BP |
6162 | case OFPTYPE_DESC_STATS_REPLY: |
6163 | case OFPTYPE_FLOW_STATS_REPLY: | |
6164 | case OFPTYPE_QUEUE_STATS_REPLY: | |
6165 | case OFPTYPE_PORT_STATS_REPLY: | |
6166 | case OFPTYPE_TABLE_STATS_REPLY: | |
6167 | case OFPTYPE_AGGREGATE_STATS_REPLY: | |
6168 | case OFPTYPE_PORT_DESC_STATS_REPLY: | |
6169 | case OFPTYPE_ROLE_REPLY: | |
6170 | case OFPTYPE_FLOW_MONITOR_PAUSED: | |
6171 | case OFPTYPE_FLOW_MONITOR_RESUMED: | |
6172 | case OFPTYPE_FLOW_MONITOR_STATS_REPLY: | |
2e1ae200 | 6173 | case OFPTYPE_GET_ASYNC_REPLY: |
261bd854 BP |
6174 | case OFPTYPE_GROUP_STATS_REPLY: |
6175 | case OFPTYPE_GROUP_DESC_STATS_REPLY: | |
6176 | case OFPTYPE_GROUP_FEATURES_STATS_REPLY: | |
6177 | case OFPTYPE_METER_STATS_REPLY: | |
6178 | case OFPTYPE_METER_CONFIG_STATS_REPLY: | |
6179 | case OFPTYPE_METER_FEATURES_STATS_REPLY: | |
6180 | case OFPTYPE_TABLE_FEATURES_STATS_REPLY: | |
252f3411 | 6181 | case OFPTYPE_ROLE_STATUS: |
064af421 | 6182 | default: |
76ec08e0 YT |
6183 | if (ofpmsg_is_stat_request(oh)) { |
6184 | return OFPERR_OFPBRC_BAD_STAT; | |
6185 | } else { | |
6186 | return OFPERR_OFPBRC_BAD_TYPE; | |
6187 | } | |
064af421 | 6188 | } |
d1e2cf21 | 6189 | } |
064af421 | 6190 | |
b20f4073 | 6191 | static void |
e03248b7 | 6192 | handle_openflow(struct ofconn *ofconn, const struct ofpbuf *ofp_msg) |
15aaf599 | 6193 | OVS_EXCLUDED(ofproto_mutex) |
d1e2cf21 BP |
6194 | { |
6195 | int error = handle_openflow__(ofconn, ofp_msg); | |
b20f4073 | 6196 | if (error) { |
1f317cb5 | 6197 | ofconn_send_error(ofconn, ofpbuf_data(ofp_msg), error); |
064af421 | 6198 | } |
d1e2cf21 | 6199 | COVERAGE_INC(ofproto_recv_openflow); |
7ee20df1 BP |
6200 | } |
6201 | \f | |
6202 | /* Asynchronous operations. */ | |
6203 | ||
834fe5cb BP |
6204 | static enum ofperr |
6205 | send_buffered_packet(struct ofconn *ofconn, uint32_t buffer_id, | |
6206 | struct rule *rule) | |
15aaf599 | 6207 | OVS_REQUIRES(ofproto_mutex) |
7ee20df1 | 6208 | { |
834fe5cb BP |
6209 | enum ofperr error = 0; |
6210 | if (ofconn && buffer_id != UINT32_MAX) { | |
6211 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
6212 | struct ofpbuf *packet; | |
6213 | ofp_port_t in_port; | |
b277c7cc | 6214 | |
834fe5cb BP |
6215 | error = ofconn_pktbuf_retrieve(ofconn, buffer_id, &packet, &in_port); |
6216 | if (packet) { | |
6217 | struct rule_execute *re; | |
b277c7cc | 6218 | |
834fe5cb | 6219 | ofproto_rule_ref(rule); |
b277c7cc | 6220 | |
834fe5cb BP |
6221 | re = xmalloc(sizeof *re); |
6222 | re->rule = rule; | |
6223 | re->in_port = in_port; | |
6224 | re->packet = packet; | |
b277c7cc | 6225 | |
834fe5cb BP |
6226 | if (!guarded_list_push_back(&ofproto->rule_executes, |
6227 | &re->list_node, 1024)) { | |
a2143702 | 6228 | ofproto_rule_unref(rule); |
834fe5cb BP |
6229 | ofpbuf_delete(re->packet); |
6230 | free(re); | |
e615b0a3 | 6231 | } |
af822017 | 6232 | } |
7ee20df1 | 6233 | } |
834fe5cb | 6234 | return error; |
7ee20df1 | 6235 | } |
064af421 | 6236 | \f |
064af421 | 6237 | static uint64_t |
fa60c019 | 6238 | pick_datapath_id(const struct ofproto *ofproto) |
064af421 | 6239 | { |
fa60c019 | 6240 | const struct ofport *port; |
064af421 | 6241 | |
abe529af | 6242 | port = ofproto_get_port(ofproto, OFPP_LOCAL); |
fa60c019 BP |
6243 | if (port) { |
6244 | uint8_t ea[ETH_ADDR_LEN]; | |
6245 | int error; | |
6246 | ||
6247 | error = netdev_get_etheraddr(port->netdev, ea); | |
064af421 BP |
6248 | if (!error) { |
6249 | return eth_addr_to_uint64(ea); | |
6250 | } | |
fbfa2911 BP |
6251 | VLOG_WARN("%s: could not get MAC address for %s (%s)", |
6252 | ofproto->name, netdev_get_name(port->netdev), | |
10a89ef0 | 6253 | ovs_strerror(error)); |
064af421 | 6254 | } |
fa60c019 | 6255 | return ofproto->fallback_dpid; |
064af421 BP |
6256 | } |
6257 | ||
6258 | static uint64_t | |
6259 | pick_fallback_dpid(void) | |
6260 | { | |
6261 | uint8_t ea[ETH_ADDR_LEN]; | |
70150daf | 6262 | eth_addr_nicira_random(ea); |
064af421 BP |
6263 | return eth_addr_to_uint64(ea); |
6264 | } | |
6265 | \f | |
254750ce BP |
6266 | /* Table overflow policy. */ |
6267 | ||
ad3efdcb EJ |
6268 | /* Chooses and updates 'rulep' with a rule to evict from 'table'. Sets 'rulep' |
6269 | * to NULL if the table is not configured to evict rules or if the table | |
6270 | * contains no evictable rules. (Rules with a readlock on their evict rwlock, | |
6271 | * or with no timeouts are not evictable.) */ | |
6272 | static bool | |
6273 | choose_rule_to_evict(struct oftable *table, struct rule **rulep) | |
15aaf599 | 6274 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6275 | { |
6276 | struct eviction_group *evg; | |
6277 | ||
ad3efdcb | 6278 | *rulep = NULL; |
254750ce | 6279 | if (!table->eviction_fields) { |
ad3efdcb | 6280 | return false; |
254750ce BP |
6281 | } |
6282 | ||
6283 | /* In the common case, the outer and inner loops here will each be entered | |
6284 | * exactly once: | |
6285 | * | |
6286 | * - The inner loop normally "return"s in its first iteration. If the | |
6287 | * eviction group has any evictable rules, then it always returns in | |
6288 | * some iteration. | |
6289 | * | |
6290 | * - The outer loop only iterates more than once if the largest eviction | |
6291 | * group has no evictable rules. | |
6292 | * | |
6293 | * - The outer loop can exit only if table's 'max_flows' is all filled up | |
afe2143d | 6294 | * by unevictable rules. */ |
254750ce BP |
6295 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { |
6296 | struct rule *rule; | |
6297 | ||
6298 | HEAP_FOR_EACH (rule, evg_node, &evg->rules) { | |
15aaf599 BP |
6299 | *rulep = rule; |
6300 | return true; | |
254750ce BP |
6301 | } |
6302 | } | |
6303 | ||
ad3efdcb | 6304 | return false; |
254750ce | 6305 | } |
254750ce BP |
6306 | \f |
6307 | /* Eviction groups. */ | |
6308 | ||
6309 | /* Returns the priority to use for an eviction_group that contains 'n_rules' | |
6310 | * rules. The priority contains low-order random bits to ensure that eviction | |
6311 | * groups with the same number of rules are prioritized randomly. */ | |
6312 | static uint32_t | |
6313 | eviction_group_priority(size_t n_rules) | |
6314 | { | |
6315 | uint16_t size = MIN(UINT16_MAX, n_rules); | |
6316 | return (size << 16) | random_uint16(); | |
6317 | } | |
6318 | ||
6319 | /* Updates 'evg', an eviction_group within 'table', following a change that | |
6320 | * adds or removes rules in 'evg'. */ | |
6321 | static void | |
6322 | eviction_group_resized(struct oftable *table, struct eviction_group *evg) | |
15aaf599 | 6323 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6324 | { |
6325 | heap_change(&table->eviction_groups_by_size, &evg->size_node, | |
6326 | eviction_group_priority(heap_count(&evg->rules))); | |
6327 | } | |
6328 | ||
6329 | /* Destroys 'evg', an eviction_group within 'table': | |
6330 | * | |
6331 | * - Removes all the rules, if any, from 'evg'. (It doesn't destroy the | |
6332 | * rules themselves, just removes them from the eviction group.) | |
6333 | * | |
6334 | * - Removes 'evg' from 'table'. | |
6335 | * | |
6336 | * - Frees 'evg'. */ | |
6337 | static void | |
6338 | eviction_group_destroy(struct oftable *table, struct eviction_group *evg) | |
15aaf599 | 6339 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6340 | { |
6341 | while (!heap_is_empty(&evg->rules)) { | |
6342 | struct rule *rule; | |
6343 | ||
6344 | rule = CONTAINER_OF(heap_pop(&evg->rules), struct rule, evg_node); | |
6345 | rule->eviction_group = NULL; | |
6346 | } | |
6347 | hmap_remove(&table->eviction_groups_by_id, &evg->id_node); | |
6348 | heap_remove(&table->eviction_groups_by_size, &evg->size_node); | |
6349 | heap_destroy(&evg->rules); | |
6350 | free(evg); | |
6351 | } | |
6352 | ||
6353 | /* Removes 'rule' from its eviction group, if any. */ | |
6354 | static void | |
6355 | eviction_group_remove_rule(struct rule *rule) | |
15aaf599 | 6356 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6357 | { |
6358 | if (rule->eviction_group) { | |
6359 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
6360 | struct eviction_group *evg = rule->eviction_group; | |
6361 | ||
6362 | rule->eviction_group = NULL; | |
6363 | heap_remove(&evg->rules, &rule->evg_node); | |
6364 | if (heap_is_empty(&evg->rules)) { | |
6365 | eviction_group_destroy(table, evg); | |
6366 | } else { | |
6367 | eviction_group_resized(table, evg); | |
6368 | } | |
6369 | } | |
6370 | } | |
6371 | ||
6372 | /* Hashes the 'rule''s values for the eviction_fields of 'rule''s table, and | |
6373 | * returns the hash value. */ | |
6374 | static uint32_t | |
6375 | eviction_group_hash_rule(struct rule *rule) | |
15aaf599 | 6376 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6377 | { |
6378 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
6379 | const struct mf_subfield *sf; | |
5cb7a798 | 6380 | struct flow flow; |
254750ce BP |
6381 | uint32_t hash; |
6382 | ||
6383 | hash = table->eviction_group_id_basis; | |
5cb7a798 | 6384 | miniflow_expand(&rule->cr.match.flow, &flow); |
254750ce BP |
6385 | for (sf = table->eviction_fields; |
6386 | sf < &table->eviction_fields[table->n_eviction_fields]; | |
6387 | sf++) | |
6388 | { | |
5cb7a798 | 6389 | if (mf_are_prereqs_ok(sf->field, &flow)) { |
254750ce BP |
6390 | union mf_value value; |
6391 | ||
5cb7a798 | 6392 | mf_get_value(sf->field, &flow, &value); |
254750ce BP |
6393 | if (sf->ofs) { |
6394 | bitwise_zero(&value, sf->field->n_bytes, 0, sf->ofs); | |
6395 | } | |
6396 | if (sf->ofs + sf->n_bits < sf->field->n_bytes * 8) { | |
6397 | unsigned int start = sf->ofs + sf->n_bits; | |
6398 | bitwise_zero(&value, sf->field->n_bytes, start, | |
6399 | sf->field->n_bytes * 8 - start); | |
6400 | } | |
6401 | hash = hash_bytes(&value, sf->field->n_bytes, hash); | |
6402 | } else { | |
6403 | hash = hash_int(hash, 0); | |
6404 | } | |
6405 | } | |
6406 | ||
6407 | return hash; | |
6408 | } | |
6409 | ||
6410 | /* Returns an eviction group within 'table' with the given 'id', creating one | |
6411 | * if necessary. */ | |
6412 | static struct eviction_group * | |
6413 | eviction_group_find(struct oftable *table, uint32_t id) | |
15aaf599 | 6414 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6415 | { |
6416 | struct eviction_group *evg; | |
6417 | ||
6418 | HMAP_FOR_EACH_WITH_HASH (evg, id_node, id, &table->eviction_groups_by_id) { | |
6419 | return evg; | |
6420 | } | |
6421 | ||
6422 | evg = xmalloc(sizeof *evg); | |
6423 | hmap_insert(&table->eviction_groups_by_id, &evg->id_node, id); | |
6424 | heap_insert(&table->eviction_groups_by_size, &evg->size_node, | |
6425 | eviction_group_priority(0)); | |
6426 | heap_init(&evg->rules); | |
6427 | ||
6428 | return evg; | |
6429 | } | |
6430 | ||
6431 | /* Returns an eviction priority for 'rule'. The return value should be | |
6432 | * interpreted so that higher priorities make a rule more attractive candidates | |
dc437090 JR |
6433 | * for eviction. |
6434 | * Called only if have a timeout. */ | |
254750ce | 6435 | static uint32_t |
dc437090 | 6436 | rule_eviction_priority(struct ofproto *ofproto, struct rule *rule) |
15aaf599 | 6437 | OVS_REQUIRES(ofproto_mutex) |
254750ce | 6438 | { |
dc437090 JR |
6439 | long long int expiration = LLONG_MAX; |
6440 | long long int modified; | |
254750ce BP |
6441 | uint32_t expiration_offset; |
6442 | ||
dc437090 | 6443 | /* 'modified' needs protection even when we hold 'ofproto_mutex'. */ |
d10976b7 | 6444 | ovs_mutex_lock(&rule->mutex); |
dc437090 | 6445 | modified = rule->modified; |
d10976b7 | 6446 | ovs_mutex_unlock(&rule->mutex); |
dc437090 JR |
6447 | |
6448 | if (rule->hard_timeout) { | |
6449 | expiration = modified + rule->hard_timeout * 1000; | |
6450 | } | |
6451 | if (rule->idle_timeout) { | |
6452 | uint64_t packets, bytes; | |
6453 | long long int used; | |
6454 | long long int idle_expiration; | |
6455 | ||
6456 | ofproto->ofproto_class->rule_get_stats(rule, &packets, &bytes, &used); | |
6457 | idle_expiration = used + rule->idle_timeout * 1000; | |
6458 | expiration = MIN(expiration, idle_expiration); | |
6459 | } | |
6460 | ||
254750ce BP |
6461 | if (expiration == LLONG_MAX) { |
6462 | return 0; | |
6463 | } | |
6464 | ||
6465 | /* Calculate the time of expiration as a number of (approximate) seconds | |
6466 | * after program startup. | |
6467 | * | |
6468 | * This should work OK for program runs that last UINT32_MAX seconds or | |
6469 | * less. Therefore, please restart OVS at least once every 136 years. */ | |
6470 | expiration_offset = (expiration >> 10) - (time_boot_msec() >> 10); | |
6471 | ||
6472 | /* Invert the expiration offset because we're using a max-heap. */ | |
6473 | return UINT32_MAX - expiration_offset; | |
6474 | } | |
6475 | ||
6476 | /* Adds 'rule' to an appropriate eviction group for its oftable's | |
6477 | * configuration. Does nothing if 'rule''s oftable doesn't have eviction | |
6478 | * enabled, or if 'rule' is a permanent rule (one that will never expire on its | |
6479 | * own). | |
6480 | * | |
6481 | * The caller must ensure that 'rule' is not already in an eviction group. */ | |
6482 | static void | |
6483 | eviction_group_add_rule(struct rule *rule) | |
15aaf599 | 6484 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6485 | { |
6486 | struct ofproto *ofproto = rule->ofproto; | |
6487 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
a3779dbc | 6488 | bool has_timeout; |
254750ce | 6489 | |
dc437090 JR |
6490 | /* Timeouts may be modified only when holding 'ofproto_mutex'. We have it |
6491 | * so no additional protection is needed. */ | |
a3779dbc | 6492 | has_timeout = rule->hard_timeout || rule->idle_timeout; |
a3779dbc EJ |
6493 | |
6494 | if (table->eviction_fields && has_timeout) { | |
254750ce BP |
6495 | struct eviction_group *evg; |
6496 | ||
6497 | evg = eviction_group_find(table, eviction_group_hash_rule(rule)); | |
6498 | ||
6499 | rule->eviction_group = evg; | |
6500 | heap_insert(&evg->rules, &rule->evg_node, | |
dc437090 | 6501 | rule_eviction_priority(ofproto, rule)); |
254750ce BP |
6502 | eviction_group_resized(table, evg); |
6503 | } | |
6504 | } | |
6505 | \f | |
d0918789 BP |
6506 | /* oftables. */ |
6507 | ||
6508 | /* Initializes 'table'. */ | |
6509 | static void | |
6510 | oftable_init(struct oftable *table) | |
6511 | { | |
5c67e4af | 6512 | memset(table, 0, sizeof *table); |
476f36e8 | 6513 | classifier_init(&table->cls, flow_segment_u32s); |
ec1c5c7e | 6514 | table->max_flows = UINT_MAX; |
3c1bb396 | 6515 | atomic_init(&table->miss_config, OFPUTIL_TABLE_MISS_DEFAULT); |
f017d986 | 6516 | |
f017d986 JR |
6517 | classifier_set_prefix_fields(&table->cls, default_prefix_fields, |
6518 | ARRAY_SIZE(default_prefix_fields)); | |
d611866c SH |
6519 | |
6520 | atomic_init(&table->n_matched, 0); | |
6521 | atomic_init(&table->n_missed, 0); | |
d0918789 BP |
6522 | } |
6523 | ||
254750ce | 6524 | /* Destroys 'table', including its classifier and eviction groups. |
d0918789 BP |
6525 | * |
6526 | * The caller is responsible for freeing 'table' itself. */ | |
6527 | static void | |
6528 | oftable_destroy(struct oftable *table) | |
6529 | { | |
cb22974d | 6530 | ovs_assert(classifier_is_empty(&table->cls)); |
254750ce | 6531 | oftable_disable_eviction(table); |
d0918789 | 6532 | classifier_destroy(&table->cls); |
254750ce BP |
6533 | free(table->name); |
6534 | } | |
6535 | ||
6536 | /* Changes the name of 'table' to 'name'. If 'name' is NULL or the empty | |
6537 | * string, then 'table' will use its default name. | |
6538 | * | |
6539 | * This only affects the name exposed for a table exposed through the OpenFlow | |
6540 | * OFPST_TABLE (as printed by "ovs-ofctl dump-tables"). */ | |
6541 | static void | |
6542 | oftable_set_name(struct oftable *table, const char *name) | |
6543 | { | |
6544 | if (name && name[0]) { | |
6545 | int len = strnlen(name, OFP_MAX_TABLE_NAME_LEN); | |
6546 | if (!table->name || strncmp(name, table->name, len)) { | |
6547 | free(table->name); | |
6548 | table->name = xmemdup0(name, len); | |
6549 | } | |
6550 | } else { | |
6551 | free(table->name); | |
6552 | table->name = NULL; | |
6553 | } | |
6554 | } | |
6555 | ||
6556 | /* oftables support a choice of two policies when adding a rule would cause the | |
6557 | * number of flows in the table to exceed the configured maximum number: either | |
6558 | * they can refuse to add the new flow or they can evict some existing flow. | |
6559 | * This function configures the former policy on 'table'. */ | |
6560 | static void | |
6561 | oftable_disable_eviction(struct oftable *table) | |
15aaf599 | 6562 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6563 | { |
6564 | if (table->eviction_fields) { | |
6565 | struct eviction_group *evg, *next; | |
6566 | ||
6567 | HMAP_FOR_EACH_SAFE (evg, next, id_node, | |
6568 | &table->eviction_groups_by_id) { | |
6569 | eviction_group_destroy(table, evg); | |
6570 | } | |
6571 | hmap_destroy(&table->eviction_groups_by_id); | |
6572 | heap_destroy(&table->eviction_groups_by_size); | |
6573 | ||
6574 | free(table->eviction_fields); | |
6575 | table->eviction_fields = NULL; | |
6576 | table->n_eviction_fields = 0; | |
6577 | } | |
6578 | } | |
6579 | ||
6580 | /* oftables support a choice of two policies when adding a rule would cause the | |
6581 | * number of flows in the table to exceed the configured maximum number: either | |
6582 | * they can refuse to add the new flow or they can evict some existing flow. | |
6583 | * This function configures the latter policy on 'table', with fairness based | |
6584 | * on the values of the 'n_fields' fields specified in 'fields'. (Specifying | |
6585 | * 'n_fields' as 0 disables fairness.) */ | |
6586 | static void | |
6587 | oftable_enable_eviction(struct oftable *table, | |
6588 | const struct mf_subfield *fields, size_t n_fields) | |
15aaf599 | 6589 | OVS_REQUIRES(ofproto_mutex) |
254750ce | 6590 | { |
254750ce BP |
6591 | struct rule *rule; |
6592 | ||
6593 | if (table->eviction_fields | |
6594 | && n_fields == table->n_eviction_fields | |
6595 | && (!n_fields | |
6596 | || !memcmp(fields, table->eviction_fields, | |
6597 | n_fields * sizeof *fields))) { | |
6598 | /* No change. */ | |
6599 | return; | |
6600 | } | |
6601 | ||
6602 | oftable_disable_eviction(table); | |
6603 | ||
6604 | table->n_eviction_fields = n_fields; | |
6605 | table->eviction_fields = xmemdup(fields, n_fields * sizeof *fields); | |
6606 | ||
6607 | table->eviction_group_id_basis = random_uint32(); | |
6608 | hmap_init(&table->eviction_groups_by_id); | |
6609 | heap_init(&table->eviction_groups_by_size); | |
6610 | ||
5f0476ce | 6611 | CLS_FOR_EACH (rule, cr, &table->cls) { |
254750ce BP |
6612 | eviction_group_add_rule(rule); |
6613 | } | |
d0918789 BP |
6614 | } |
6615 | ||
6616 | /* Removes 'rule' from the oftable that contains it. */ | |
6617 | static void | |
8b81d1ef | 6618 | oftable_remove_rule__(struct ofproto *ofproto, struct rule *rule) |
15aaf599 | 6619 | OVS_REQUIRES(ofproto_mutex) |
d0918789 | 6620 | { |
8b81d1ef BP |
6621 | struct classifier *cls = &ofproto->tables[rule->table_id].cls; |
6622 | ||
49a0e0eb | 6623 | classifier_remove(cls, CONST_CAST(struct cls_rule *, &rule->cr)); |
2c916028 | 6624 | |
98eaac36 | 6625 | cookies_remove(ofproto, rule); |
2c916028 | 6626 | |
254750ce | 6627 | eviction_group_remove_rule(rule); |
e503cc19 SH |
6628 | if (!list_is_empty(&rule->expirable)) { |
6629 | list_remove(&rule->expirable); | |
6630 | } | |
9cae45dc JR |
6631 | if (!list_is_empty(&rule->meter_list_node)) { |
6632 | list_remove(&rule->meter_list_node); | |
51b50dfd | 6633 | list_init(&rule->meter_list_node); |
9cae45dc | 6634 | } |
d0918789 BP |
6635 | } |
6636 | ||
0b4f2078 EJ |
6637 | static void |
6638 | oftable_remove_rule(struct rule *rule) | |
15aaf599 | 6639 | OVS_REQUIRES(ofproto_mutex) |
0b4f2078 | 6640 | { |
8b81d1ef | 6641 | oftable_remove_rule__(rule->ofproto, rule); |
0b4f2078 | 6642 | } |
d0918789 | 6643 | \f |
abe529af | 6644 | /* unixctl commands. */ |
7aa697dd | 6645 | |
abe529af | 6646 | struct ofproto * |
2ac6bedd | 6647 | ofproto_lookup(const char *name) |
7aa697dd | 6648 | { |
2ac6bedd | 6649 | struct ofproto *ofproto; |
7aa697dd | 6650 | |
2ac6bedd BP |
6651 | HMAP_FOR_EACH_WITH_HASH (ofproto, hmap_node, hash_string(name, 0), |
6652 | &all_ofprotos) { | |
6653 | if (!strcmp(ofproto->name, name)) { | |
6654 | return ofproto; | |
6655 | } | |
7aa697dd | 6656 | } |
2ac6bedd | 6657 | return NULL; |
7aa697dd BP |
6658 | } |
6659 | ||
6660 | static void | |
0e15264f BP |
6661 | ofproto_unixctl_list(struct unixctl_conn *conn, int argc OVS_UNUSED, |
6662 | const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED) | |
7aa697dd | 6663 | { |
7aa697dd | 6664 | struct ofproto *ofproto; |
7aa697dd | 6665 | struct ds results; |
7aa697dd | 6666 | |
7aa697dd | 6667 | ds_init(&results); |
2ac6bedd BP |
6668 | HMAP_FOR_EACH (ofproto, hmap_node, &all_ofprotos) { |
6669 | ds_put_format(&results, "%s\n", ofproto->name); | |
7aa697dd | 6670 | } |
bde9f75d | 6671 | unixctl_command_reply(conn, ds_cstr(&results)); |
7aa697dd | 6672 | ds_destroy(&results); |
7aa697dd BP |
6673 | } |
6674 | ||
6675 | static void | |
6676 | ofproto_unixctl_init(void) | |
6677 | { | |
6678 | static bool registered; | |
6679 | if (registered) { | |
6680 | return; | |
6681 | } | |
6682 | registered = true; | |
6683 | ||
0e15264f BP |
6684 | unixctl_command_register("ofproto/list", "", 0, 0, |
6685 | ofproto_unixctl_list, NULL); | |
064af421 | 6686 | } |
52a90c29 BP |
6687 | \f |
6688 | /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.) | |
6689 | * | |
6690 | * This is deprecated. It is only for compatibility with broken device drivers | |
6691 | * in old versions of Linux that do not properly support VLANs when VLAN | |
6692 | * devices are not used. When broken device drivers are no longer in | |
6693 | * widespread use, we will delete these interfaces. */ | |
6694 | ||
6695 | /* Sets a 1-bit in the 4096-bit 'vlan_bitmap' for each VLAN ID that is matched | |
6696 | * (exactly) by an OpenFlow rule in 'ofproto'. */ | |
6697 | void | |
6698 | ofproto_get_vlan_usage(struct ofproto *ofproto, unsigned long int *vlan_bitmap) | |
6699 | { | |
ac4aa4c8 JR |
6700 | struct match match; |
6701 | struct cls_rule target; | |
d0918789 | 6702 | const struct oftable *oftable; |
52a90c29 | 6703 | |
ac4aa4c8 JR |
6704 | match_init_catchall(&match); |
6705 | match_set_vlan_vid_masked(&match, htons(VLAN_CFI), htons(VLAN_CFI)); | |
6706 | cls_rule_init(&target, &match, 0); | |
6707 | ||
52a90c29 BP |
6708 | free(ofproto->vlan_bitmap); |
6709 | ofproto->vlan_bitmap = bitmap_allocate(4096); | |
6710 | ofproto->vlans_changed = false; | |
6711 | ||
d0918789 | 6712 | OFPROTO_FOR_EACH_TABLE (oftable, ofproto) { |
ac4aa4c8 | 6713 | struct rule *rule; |
52a90c29 | 6714 | |
5f0476ce | 6715 | CLS_FOR_EACH_TARGET (rule, cr, &oftable->cls, &target) { |
ac4aa4c8 JR |
6716 | if (minimask_get_vid_mask(&rule->cr.match.mask) == VLAN_VID_MASK) { |
6717 | uint16_t vid = miniflow_get_vid(&rule->cr.match.flow); | |
6718 | ||
6719 | bitmap_set1(vlan_bitmap, vid); | |
6720 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
52a90c29 BP |
6721 | } |
6722 | } | |
6723 | } | |
059ef3c6 EJ |
6724 | |
6725 | cls_rule_destroy(&target); | |
52a90c29 BP |
6726 | } |
6727 | ||
6728 | /* Returns true if new VLANs have come into use by the flow table since the | |
6729 | * last call to ofproto_get_vlan_usage(). | |
6730 | * | |
6731 | * We don't track when old VLANs stop being used. */ | |
6732 | bool | |
6733 | ofproto_has_vlan_usage_changed(const struct ofproto *ofproto) | |
6734 | { | |
6735 | return ofproto->vlans_changed; | |
6736 | } | |
6737 | ||
6738 | /* Configures a VLAN splinter binding between the ports identified by OpenFlow | |
6739 | * port numbers 'vlandev_ofp_port' and 'realdev_ofp_port'. If | |
6740 | * 'realdev_ofp_port' is nonzero, then the VLAN device is enslaved to the real | |
6741 | * device as a VLAN splinter for VLAN ID 'vid'. If 'realdev_ofp_port' is zero, | |
6742 | * then the VLAN device is un-enslaved. */ | |
6743 | int | |
4e022ec0 AW |
6744 | ofproto_port_set_realdev(struct ofproto *ofproto, ofp_port_t vlandev_ofp_port, |
6745 | ofp_port_t realdev_ofp_port, int vid) | |
52a90c29 BP |
6746 | { |
6747 | struct ofport *ofport; | |
6748 | int error; | |
6749 | ||
cb22974d | 6750 | ovs_assert(vlandev_ofp_port != realdev_ofp_port); |
52a90c29 BP |
6751 | |
6752 | ofport = ofproto_get_port(ofproto, vlandev_ofp_port); | |
6753 | if (!ofport) { | |
6754 | VLOG_WARN("%s: cannot set realdev on nonexistent port %"PRIu16, | |
6755 | ofproto->name, vlandev_ofp_port); | |
6756 | return EINVAL; | |
6757 | } | |
6758 | ||
6759 | if (!ofproto->ofproto_class->set_realdev) { | |
6760 | if (!vlandev_ofp_port) { | |
6761 | return 0; | |
6762 | } | |
6763 | VLOG_WARN("%s: vlan splinters not supported", ofproto->name); | |
6764 | return EOPNOTSUPP; | |
6765 | } | |
6766 | ||
6767 | error = ofproto->ofproto_class->set_realdev(ofport, realdev_ofp_port, vid); | |
6768 | if (error) { | |
6769 | VLOG_WARN("%s: setting realdev on port %"PRIu16" (%s) failed (%s)", | |
6770 | ofproto->name, vlandev_ofp_port, | |
10a89ef0 | 6771 | netdev_get_name(ofport->netdev), ovs_strerror(error)); |
52a90c29 BP |
6772 | } |
6773 | return error; | |
6774 | } |