]>
Commit | Line | Data |
---|---|---|
064af421 | 1 | /* |
3fbbcba7 | 2 | * Copyright (c) 2009-2015 Nicira, Inc. |
43253595 | 3 | * Copyright (c) 2010 Jean Tourrilhes - HP-Labs. |
064af421 | 4 | * |
a14bc59f BP |
5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
6 | * you may not use this file except in compliance with the License. | |
7 | * You may obtain a copy of the License at: | |
064af421 | 8 | * |
a14bc59f BP |
9 | * http://www.apache.org/licenses/LICENSE-2.0 |
10 | * | |
11 | * Unless required by applicable law or agreed to in writing, software | |
12 | * distributed under the License is distributed on an "AS IS" BASIS, | |
13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
14 | * See the License for the specific language governing permissions and | |
15 | * limitations under the License. | |
064af421 BP |
16 | */ |
17 | ||
18 | #include <config.h> | |
19 | #include "ofproto.h" | |
20 | #include <errno.h> | |
21 | #include <inttypes.h> | |
064af421 BP |
22 | #include <stdbool.h> |
23 | #include <stdlib.h> | |
448a4b2f | 24 | #include <unistd.h> |
52a90c29 | 25 | #include "bitmap.h" |
10a24935 | 26 | #include "byte-order.h" |
064af421 | 27 | #include "classifier.h" |
da4a6191 | 28 | #include "connectivity.h" |
19a87e36 | 29 | #include "connmgr.h" |
064af421 | 30 | #include "coverage.h" |
4f2cad2c | 31 | #include "dynamic-string.h" |
ca0f572c BP |
32 | #include "hash.h" |
33 | #include "hmap.h" | |
254750ce | 34 | #include "meta-flow.h" |
064af421 | 35 | #include "netdev.h" |
09246b99 | 36 | #include "nx-match.h" |
f25d0cf3 | 37 | #include "ofp-actions.h" |
90bf1e07 | 38 | #include "ofp-errors.h" |
982697a4 | 39 | #include "ofp-msgs.h" |
064af421 | 40 | #include "ofp-print.h" |
fa37b408 | 41 | #include "ofp-util.h" |
064af421 | 42 | #include "ofpbuf.h" |
5bee6e26 | 43 | #include "ofproto-provider.h" |
064af421 BP |
44 | #include "openflow/nicira-ext.h" |
45 | #include "openflow/openflow.h" | |
06a0f3e2 | 46 | #include "ovs-rcu.h" |
cf62fa4c | 47 | #include "dp-packet.h" |
064af421 BP |
48 | #include "packets.h" |
49 | #include "pinsched.h" | |
50 | #include "pktbuf.h" | |
51 | #include "poll-loop.h" | |
254750ce | 52 | #include "random.h" |
da4a6191 | 53 | #include "seq.h" |
064af421 | 54 | #include "shash.h" |
0d085684 | 55 | #include "simap.h" |
e8f9a7bb | 56 | #include "smap.h" |
b3c01ed3 | 57 | #include "sset.h" |
064af421 | 58 | #include "timeval.h" |
9558d2a5 | 59 | #include "tun-metadata.h" |
c4617b3c | 60 | #include "unaligned.h" |
4f2cad2c | 61 | #include "unixctl.h" |
e6211adc | 62 | #include "openvswitch/vlog.h" |
777af88d | 63 | #include "bundles.h" |
064af421 | 64 | |
d98e6007 | 65 | VLOG_DEFINE_THIS_MODULE(ofproto); |
064af421 | 66 | |
d76f09ea | 67 | COVERAGE_DEFINE(ofproto_flush); |
d76f09ea BP |
68 | COVERAGE_DEFINE(ofproto_packet_out); |
69 | COVERAGE_DEFINE(ofproto_queue_req); | |
70 | COVERAGE_DEFINE(ofproto_recv_openflow); | |
71 | COVERAGE_DEFINE(ofproto_reinit_ports); | |
d76f09ea BP |
72 | COVERAGE_DEFINE(ofproto_update_port); |
73 | ||
f017d986 JR |
74 | /* Default fields to use for prefix tries in each flow table, unless something |
75 | * else is configured. */ | |
76 | const enum mf_field_id default_prefix_fields[2] = | |
77 | { MFF_IPV4_DST, MFF_IPV4_SRC }; | |
78 | ||
d0918789 BP |
79 | /* oftable. */ |
80 | static void oftable_init(struct oftable *); | |
81 | static void oftable_destroy(struct oftable *); | |
878ae780 | 82 | |
254750ce BP |
83 | static void oftable_set_name(struct oftable *, const char *name); |
84 | ||
6787a49f | 85 | static enum ofperr evict_rules_from_table(struct oftable *) |
834fe5cb | 86 | OVS_REQUIRES(ofproto_mutex); |
7394b8fb BP |
87 | static void oftable_disable_eviction(struct oftable *) |
88 | OVS_REQUIRES(ofproto_mutex); | |
254750ce BP |
89 | static void oftable_enable_eviction(struct oftable *, |
90 | const struct mf_subfield *fields, | |
7394b8fb BP |
91 | size_t n_fields) |
92 | OVS_REQUIRES(ofproto_mutex); | |
254750ce | 93 | |
254750ce BP |
94 | /* A set of rules within a single OpenFlow table (oftable) that have the same |
95 | * values for the oftable's eviction_fields. A rule to be evicted, when one is | |
96 | * needed, is taken from the eviction group that contains the greatest number | |
97 | * of rules. | |
98 | * | |
99 | * An oftable owns any number of eviction groups, each of which contains any | |
100 | * number of rules. | |
101 | * | |
102 | * Membership in an eviction group is imprecise, based on the hash of the | |
103 | * oftable's eviction_fields (in the eviction_group's id_node.hash member). | |
104 | * That is, if two rules have different eviction_fields, but those | |
105 | * eviction_fields hash to the same value, then they will belong to the same | |
106 | * eviction_group anyway. | |
107 | * | |
108 | * (When eviction is not enabled on an oftable, we don't track any eviction | |
109 | * groups, to save time and space.) */ | |
110 | struct eviction_group { | |
111 | struct hmap_node id_node; /* In oftable's "eviction_groups_by_id". */ | |
112 | struct heap_node size_node; /* In oftable's "eviction_groups_by_size". */ | |
113 | struct heap rules; /* Contains "struct rule"s. */ | |
114 | }; | |
115 | ||
3d900aa7 BP |
116 | static bool choose_rule_to_evict(struct oftable *table, struct rule **rulep) |
117 | OVS_REQUIRES(ofproto_mutex); | |
f70b94de BP |
118 | static uint64_t rule_eviction_priority(struct ofproto *ofproto, struct rule *) |
119 | OVS_REQUIRES(ofproto_mutex); | |
3d900aa7 BP |
120 | static void eviction_group_add_rule(struct rule *) |
121 | OVS_REQUIRES(ofproto_mutex); | |
122 | static void eviction_group_remove_rule(struct rule *) | |
123 | OVS_REQUIRES(ofproto_mutex); | |
f29152ca | 124 | |
a9b22b7f BP |
125 | /* Criteria that flow_mod and other operations use for selecting rules on |
126 | * which to operate. */ | |
127 | struct rule_criteria { | |
128 | /* An OpenFlow table or 255 for all tables. */ | |
129 | uint8_t table_id; | |
130 | ||
131 | /* OpenFlow matching criteria. Interpreted different in "loose" way by | |
132 | * collect_rules_loose() and "strict" way by collect_rules_strict(), as | |
133 | * defined in the OpenFlow spec. */ | |
134 | struct cls_rule cr; | |
135 | ||
136 | /* Matching criteria for the OpenFlow cookie. Consider a bit B in a rule's | |
137 | * cookie and the corresponding bits C in 'cookie' and M in 'cookie_mask'. | |
138 | * The rule will not be selected if M is 1 and B != C. */ | |
139 | ovs_be64 cookie; | |
140 | ovs_be64 cookie_mask; | |
141 | ||
142 | /* Selection based on actions within a rule: | |
143 | * | |
144 | * If out_port != OFPP_ANY, selects only rules that output to out_port. | |
145 | * If out_group != OFPG_ALL, select only rules that output to out_group. */ | |
146 | ofp_port_t out_port; | |
147 | uint32_t out_group; | |
dd51dae2 BP |
148 | |
149 | /* If true, collects only rules that are modifiable. */ | |
150 | bool include_hidden; | |
151 | bool include_readonly; | |
a9b22b7f BP |
152 | }; |
153 | ||
154 | static void rule_criteria_init(struct rule_criteria *, uint8_t table_id, | |
eb391b76 | 155 | const struct match *match, int priority, |
18721c4a | 156 | cls_version_t version, |
a9b22b7f BP |
157 | ovs_be64 cookie, ovs_be64 cookie_mask, |
158 | ofp_port_t out_port, uint32_t out_group); | |
dd51dae2 BP |
159 | static void rule_criteria_require_rw(struct rule_criteria *, |
160 | bool can_write_readonly); | |
a9b22b7f BP |
161 | static void rule_criteria_destroy(struct rule_criteria *); |
162 | ||
35f48b8b BP |
163 | static enum ofperr collect_rules_loose(struct ofproto *, |
164 | const struct rule_criteria *, | |
165 | struct rule_collection *); | |
166 | ||
15aaf599 BP |
167 | /* A packet that needs to be passed to rule_execute(). |
168 | * | |
169 | * (We can't do this immediately from ofopgroup_complete() because that holds | |
170 | * ofproto_mutex, which rule_execute() needs released.) */ | |
35412852 | 171 | struct rule_execute { |
ca6ba700 | 172 | struct ovs_list list_node; /* In struct ofproto's "rule_executes" list. */ |
35412852 BP |
173 | struct rule *rule; /* Owns a reference to the rule. */ |
174 | ofp_port_t in_port; | |
cf62fa4c | 175 | struct dp_packet *packet; /* Owns the packet. */ |
35412852 BP |
176 | }; |
177 | ||
15aaf599 | 178 | static void run_rule_executes(struct ofproto *) OVS_EXCLUDED(ofproto_mutex); |
35412852 BP |
179 | static void destroy_rule_executes(struct ofproto *); |
180 | ||
35f48b8b BP |
181 | struct learned_cookie { |
182 | union { | |
183 | /* In struct ofproto's 'learned_cookies' hmap. */ | |
184 | struct hmap_node hmap_node OVS_GUARDED_BY(ofproto_mutex); | |
185 | ||
186 | /* In 'dead_cookies' list when removed from hmap. */ | |
ca6ba700 | 187 | struct ovs_list list_node; |
35f48b8b BP |
188 | } u; |
189 | ||
190 | /* Key. */ | |
191 | ovs_be64 cookie OVS_GUARDED_BY(ofproto_mutex); | |
192 | uint8_t table_id OVS_GUARDED_BY(ofproto_mutex); | |
193 | ||
194 | /* Number of references from "learn" actions. | |
195 | * | |
196 | * When this drops to 0, all of the flows in 'table_id' with the specified | |
197 | * 'cookie' are deleted. */ | |
198 | int n OVS_GUARDED_BY(ofproto_mutex); | |
199 | }; | |
200 | ||
201 | static const struct ofpact_learn *next_learn_with_delete( | |
202 | const struct rule_actions *, const struct ofpact_learn *start); | |
203 | ||
204 | static void learned_cookies_inc(struct ofproto *, const struct rule_actions *) | |
205 | OVS_REQUIRES(ofproto_mutex); | |
206 | static void learned_cookies_dec(struct ofproto *, const struct rule_actions *, | |
ca6ba700 | 207 | struct ovs_list *dead_cookies) |
35f48b8b | 208 | OVS_REQUIRES(ofproto_mutex); |
ca6ba700 | 209 | static void learned_cookies_flush(struct ofproto *, struct ovs_list *dead_cookies) |
35f48b8b BP |
210 | OVS_REQUIRES(ofproto_mutex); |
211 | ||
d0918789 | 212 | /* ofport. */ |
15aaf599 | 213 | static void ofport_destroy__(struct ofport *) OVS_EXCLUDED(ofproto_mutex); |
d0918789 BP |
214 | static void ofport_destroy(struct ofport *); |
215 | ||
216 | static void update_port(struct ofproto *, const char *devname); | |
217 | static int init_ports(struct ofproto *); | |
218 | static void reinit_ports(struct ofproto *); | |
7ee20df1 | 219 | |
fdcea803 GS |
220 | static long long int ofport_get_usage(const struct ofproto *, |
221 | ofp_port_t ofp_port); | |
222 | static void ofport_set_usage(struct ofproto *, ofp_port_t ofp_port, | |
223 | long long int last_used); | |
865b26a4 | 224 | static void ofport_remove_usage(struct ofproto *, ofp_port_t ofp_port); |
fdcea803 GS |
225 | |
226 | /* Ofport usage. | |
227 | * | |
228 | * Keeps track of the currently used and recently used ofport values and is | |
229 | * used to prevent immediate recycling of ofport values. */ | |
230 | struct ofport_usage { | |
231 | struct hmap_node hmap_node; /* In struct ofproto's "ofport_usage" hmap. */ | |
232 | ofp_port_t ofp_port; /* OpenFlow port number. */ | |
233 | long long int last_used; /* Last time the 'ofp_port' was used. LLONG_MAX | |
234 | represents in-use ofports. */ | |
235 | }; | |
236 | ||
254750ce | 237 | /* rule. */ |
f695ebfa JR |
238 | static void ofproto_rule_send_removed(struct rule *) |
239 | OVS_EXCLUDED(ofproto_mutex); | |
834fe5cb | 240 | static bool rule_is_readonly(const struct rule *); |
bc5e6a91 JR |
241 | static void ofproto_rule_insert__(struct ofproto *, struct rule *) |
242 | OVS_REQUIRES(ofproto_mutex); | |
802f84ff JR |
243 | static void ofproto_rule_remove__(struct ofproto *, struct rule *) |
244 | OVS_REQUIRES(ofproto_mutex); | |
254750ce | 245 | |
baae3d02 BP |
246 | /* The source of a flow_mod request, in the code that processes flow_mods. |
247 | * | |
248 | * A flow table modification request can be generated externally, via OpenFlow, | |
249 | * or internally through a function call. This structure indicates the source | |
250 | * of an OpenFlow-generated flow_mod. For an internal flow_mod, it isn't | |
251 | * meaningful and thus supplied as NULL. */ | |
252 | struct flow_mod_requester { | |
253 | struct ofconn *ofconn; /* Connection on which flow_mod arrived. */ | |
c84d8691 | 254 | const struct ofp_header *request; |
baae3d02 BP |
255 | }; |
256 | ||
d0918789 | 257 | /* OpenFlow. */ |
39c94593 | 258 | static enum ofperr replace_rule_create(struct ofproto *, |
dd27be82 | 259 | struct ofputil_flow_mod *, |
39c94593 JR |
260 | struct cls_rule *cr, uint8_t table_id, |
261 | struct rule *old_rule, | |
262 | struct rule **new_rule) | |
263 | OVS_REQUIRES(ofproto_mutex); | |
264 | ||
265 | static void replace_rule_start(struct ofproto *, | |
266 | struct rule *old_rule, | |
267 | struct rule *new_rule, | |
268 | struct cls_conjunction *, size_t n_conjs) | |
dd27be82 | 269 | OVS_REQUIRES(ofproto_mutex); |
39c94593 | 270 | |
6787a49f JR |
271 | static void replace_rule_revert(struct ofproto *, struct rule *old_rule, |
272 | struct rule *new_rule) | |
39c94593 JR |
273 | OVS_REQUIRES(ofproto_mutex); |
274 | ||
275 | static void replace_rule_finish(struct ofproto *, struct ofputil_flow_mod *, | |
276 | const struct flow_mod_requester *, | |
277 | struct rule *old_rule, struct rule *new_rule, | |
278 | struct ovs_list *dead_cookies) | |
dd27be82 | 279 | OVS_REQUIRES(ofproto_mutex); |
39c94593 | 280 | static void delete_flows__(struct rule_collection *, |
9ca4a86f BP |
281 | enum ofp_flow_removed_reason, |
282 | const struct flow_mod_requester *) | |
15aaf599 | 283 | OVS_REQUIRES(ofproto_mutex); |
834fe5cb | 284 | |
c84d8691 JR |
285 | static void send_buffered_packet(const struct flow_mod_requester *, |
286 | uint32_t buffer_id, struct rule *) | |
834fe5cb BP |
287 | OVS_REQUIRES(ofproto_mutex); |
288 | ||
7e9f8266 BP |
289 | static bool ofproto_group_exists__(const struct ofproto *ofproto, |
290 | uint32_t group_id) | |
291 | OVS_REQ_RDLOCK(ofproto->groups_rwlock); | |
84d68566 SH |
292 | static bool ofproto_group_exists(const struct ofproto *ofproto, |
293 | uint32_t group_id) | |
7e9f8266 | 294 | OVS_EXCLUDED(ofproto->groups_rwlock); |
7395c052 | 295 | static enum ofperr add_group(struct ofproto *, struct ofputil_group_mod *); |
b20f4073 | 296 | static void handle_openflow(struct ofconn *, const struct ofpbuf *); |
4fcb2083 | 297 | static enum ofperr do_bundle_flow_mod_start(struct ofproto *, |
1f42be1c JR |
298 | struct ofputil_flow_mod *, |
299 | struct ofp_bundle_entry *) | |
300 | OVS_REQUIRES(ofproto_mutex); | |
301 | static void do_bundle_flow_mod_finish(struct ofproto *, | |
302 | struct ofputil_flow_mod *, | |
303 | const struct flow_mod_requester *, | |
304 | struct ofp_bundle_entry *) | |
305 | OVS_REQUIRES(ofproto_mutex); | |
baae3d02 | 306 | static enum ofperr handle_flow_mod__(struct ofproto *, |
e3b56933 | 307 | struct ofputil_flow_mod *, |
baae3d02 | 308 | const struct flow_mod_requester *) |
15aaf599 | 309 | OVS_EXCLUDED(ofproto_mutex); |
65e0be10 BP |
310 | static void calc_duration(long long int start, long long int now, |
311 | uint32_t *sec, uint32_t *nsec); | |
f29152ca | 312 | |
d0918789 BP |
313 | /* ofproto. */ |
314 | static uint64_t pick_datapath_id(const struct ofproto *); | |
315 | static uint64_t pick_fallback_dpid(void); | |
316 | static void ofproto_destroy__(struct ofproto *); | |
ada3428f | 317 | static void update_mtu(struct ofproto *, struct ofport *); |
6b3f7f02 | 318 | static void meter_delete(struct ofproto *, uint32_t first, uint32_t last); |
062fea06 | 319 | static void meter_insert_rule(struct rule *); |
f29152ca | 320 | |
d0918789 | 321 | /* unixctl. */ |
abe529af | 322 | static void ofproto_unixctl_init(void); |
f29152ca | 323 | |
abe529af BP |
324 | /* All registered ofproto classes, in probe order. */ |
325 | static const struct ofproto_class **ofproto_classes; | |
326 | static size_t n_ofproto_classes; | |
327 | static size_t allocated_ofproto_classes; | |
7aa697dd | 328 | |
15aaf599 BP |
329 | /* Global lock that protects all flow table operations. */ |
330 | struct ovs_mutex ofproto_mutex = OVS_MUTEX_INITIALIZER; | |
abe7b10f | 331 | |
e79a6c83 | 332 | unsigned ofproto_flow_limit = OFPROTO_FLOW_LIMIT_DEFAULT; |
72310b04 | 333 | unsigned ofproto_max_idle = OFPROTO_MAX_IDLE_DEFAULT; |
380f49c4 | 334 | |
e79a6c83 | 335 | size_t n_handlers, n_revalidators; |
f2eee189 AW |
336 | size_t n_dpdk_rxqs; |
337 | char *pmd_cpu_mask; | |
6567010f | 338 | |
f797957a | 339 | /* Map from datapath name to struct ofproto, for use by unixctl commands. */ |
abe529af | 340 | static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos); |
ebe482fd | 341 | |
e1b1d06a JP |
342 | /* Initial mappings of port to OpenFlow number mappings. */ |
343 | static struct shash init_ofp_ports = SHASH_INITIALIZER(&init_ofp_ports); | |
344 | ||
abe529af | 345 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
f29152ca | 346 | |
40358701 GS |
347 | /* The default value of true waits for flow restore. */ |
348 | static bool flow_restore_wait = true; | |
349 | ||
b0408fca JP |
350 | /* Must be called to initialize the ofproto library. |
351 | * | |
352 | * The caller may pass in 'iface_hints', which contains an shash of | |
353 | * "iface_hint" elements indexed by the interface's name. The provider | |
354 | * may use these hints to describe the startup configuration in order to | |
355 | * reinitialize its state. The caller owns the provided data, so a | |
356 | * provider will make copies of anything required. An ofproto provider | |
357 | * will remove any existing state that is not described by the hint, and | |
358 | * may choose to remove it all. */ | |
359 | void | |
360 | ofproto_init(const struct shash *iface_hints) | |
abe529af | 361 | { |
e1b1d06a | 362 | struct shash_node *node; |
b0408fca | 363 | size_t i; |
f29152ca | 364 | |
b0408fca JP |
365 | ofproto_class_register(&ofproto_dpif_class); |
366 | ||
e1b1d06a JP |
367 | /* Make a local copy, since we don't own 'iface_hints' elements. */ |
368 | SHASH_FOR_EACH(node, iface_hints) { | |
369 | const struct iface_hint *orig_hint = node->data; | |
370 | struct iface_hint *new_hint = xmalloc(sizeof *new_hint); | |
371 | const char *br_type = ofproto_normalize_type(orig_hint->br_type); | |
372 | ||
373 | new_hint->br_name = xstrdup(orig_hint->br_name); | |
374 | new_hint->br_type = xstrdup(br_type); | |
375 | new_hint->ofp_port = orig_hint->ofp_port; | |
376 | ||
377 | shash_add(&init_ofp_ports, node->name, new_hint); | |
378 | } | |
379 | ||
b0408fca | 380 | for (i = 0; i < n_ofproto_classes; i++) { |
e1b1d06a | 381 | ofproto_classes[i]->init(&init_ofp_ports); |
abe529af BP |
382 | } |
383 | } | |
f29152ca | 384 | |
abe529af BP |
385 | /* 'type' should be a normalized datapath type, as returned by |
386 | * ofproto_normalize_type(). Returns the corresponding ofproto_class | |
387 | * structure, or a null pointer if there is none registered for 'type'. */ | |
388 | static const struct ofproto_class * | |
389 | ofproto_class_find__(const char *type) | |
390 | { | |
391 | size_t i; | |
f29152ca | 392 | |
abe529af BP |
393 | for (i = 0; i < n_ofproto_classes; i++) { |
394 | const struct ofproto_class *class = ofproto_classes[i]; | |
395 | struct sset types; | |
396 | bool found; | |
064af421 | 397 | |
abe529af BP |
398 | sset_init(&types); |
399 | class->enumerate_types(&types); | |
400 | found = sset_contains(&types, type); | |
401 | sset_destroy(&types); | |
bcf84111 | 402 | |
abe529af BP |
403 | if (found) { |
404 | return class; | |
405 | } | |
406 | } | |
407 | VLOG_WARN("unknown datapath type %s", type); | |
408 | return NULL; | |
409 | } | |
064af421 | 410 | |
abe529af BP |
411 | /* Registers a new ofproto class. After successful registration, new ofprotos |
412 | * of that type can be created using ofproto_create(). */ | |
413 | int | |
414 | ofproto_class_register(const struct ofproto_class *new_class) | |
415 | { | |
416 | size_t i; | |
7aa697dd | 417 | |
abe529af BP |
418 | for (i = 0; i < n_ofproto_classes; i++) { |
419 | if (ofproto_classes[i] == new_class) { | |
420 | return EEXIST; | |
421 | } | |
422 | } | |
064af421 | 423 | |
abe529af BP |
424 | if (n_ofproto_classes >= allocated_ofproto_classes) { |
425 | ofproto_classes = x2nrealloc(ofproto_classes, | |
426 | &allocated_ofproto_classes, | |
427 | sizeof *ofproto_classes); | |
428 | } | |
429 | ofproto_classes[n_ofproto_classes++] = new_class; | |
430 | return 0; | |
431 | } | |
064af421 | 432 | |
abe529af BP |
433 | /* Unregisters a datapath provider. 'type' must have been previously |
434 | * registered and not currently be in use by any ofprotos. After | |
435 | * unregistration new datapaths of that type cannot be opened using | |
436 | * ofproto_create(). */ | |
437 | int | |
438 | ofproto_class_unregister(const struct ofproto_class *class) | |
439 | { | |
440 | size_t i; | |
76ce9432 | 441 | |
abe529af BP |
442 | for (i = 0; i < n_ofproto_classes; i++) { |
443 | if (ofproto_classes[i] == class) { | |
444 | for (i++; i < n_ofproto_classes; i++) { | |
445 | ofproto_classes[i - 1] = ofproto_classes[i]; | |
446 | } | |
447 | n_ofproto_classes--; | |
448 | return 0; | |
449 | } | |
450 | } | |
451 | VLOG_WARN("attempted to unregister an ofproto class that is not " | |
452 | "registered"); | |
453 | return EAFNOSUPPORT; | |
454 | } | |
4a4cdb3b | 455 | |
f79e673f BP |
456 | /* Clears 'types' and enumerates all registered ofproto types into it. The |
457 | * caller must first initialize the sset. */ | |
458 | void | |
459 | ofproto_enumerate_types(struct sset *types) | |
460 | { | |
abe529af | 461 | size_t i; |
064af421 | 462 | |
c799c306 | 463 | sset_clear(types); |
abe529af BP |
464 | for (i = 0; i < n_ofproto_classes; i++) { |
465 | ofproto_classes[i]->enumerate_types(types); | |
466 | } | |
f79e673f | 467 | } |
064af421 | 468 | |
f79e673f BP |
469 | /* Returns the fully spelled out name for the given ofproto 'type'. |
470 | * | |
471 | * Normalized type string can be compared with strcmp(). Unnormalized type | |
472 | * string might be the same even if they have different spellings. */ | |
473 | const char * | |
474 | ofproto_normalize_type(const char *type) | |
475 | { | |
abe529af | 476 | return type && type[0] ? type : "system"; |
f79e673f | 477 | } |
064af421 | 478 | |
f79e673f BP |
479 | /* Clears 'names' and enumerates the names of all known created ofprotos with |
480 | * the given 'type'. The caller must first initialize the sset. Returns 0 if | |
481 | * successful, otherwise a positive errno value. | |
482 | * | |
483 | * Some kinds of datapaths might not be practically enumerable. This is not | |
484 | * considered an error. */ | |
485 | int | |
486 | ofproto_enumerate_names(const char *type, struct sset *names) | |
487 | { | |
abe529af BP |
488 | const struct ofproto_class *class = ofproto_class_find__(type); |
489 | return class ? class->enumerate_names(type, names) : EAFNOSUPPORT; | |
239ad7d1 | 490 | } |
7aa697dd | 491 | |
39c94593 JR |
492 | static void |
493 | ofproto_bump_tables_version(struct ofproto *ofproto) | |
494 | { | |
495 | ++ofproto->tables_version; | |
496 | ofproto->ofproto_class->set_tables_version(ofproto, | |
497 | ofproto->tables_version); | |
498 | } | |
499 | ||
064af421 | 500 | int |
abe529af | 501 | ofproto_create(const char *datapath_name, const char *datapath_type, |
064af421 BP |
502 | struct ofproto **ofprotop) |
503 | { | |
abe529af BP |
504 | const struct ofproto_class *class; |
505 | struct ofproto *ofproto; | |
064af421 | 506 | int error; |
c2f0373a | 507 | int i; |
064af421 BP |
508 | |
509 | *ofprotop = NULL; | |
510 | ||
7aa697dd BP |
511 | ofproto_unixctl_init(); |
512 | ||
abe529af BP |
513 | datapath_type = ofproto_normalize_type(datapath_type); |
514 | class = ofproto_class_find__(datapath_type); | |
515 | if (!class) { | |
516 | VLOG_WARN("could not create datapath %s of unknown type %s", | |
517 | datapath_name, datapath_type); | |
518 | return EAFNOSUPPORT; | |
064af421 BP |
519 | } |
520 | ||
abe529af BP |
521 | ofproto = class->alloc(); |
522 | if (!ofproto) { | |
523 | VLOG_ERR("failed to allocate datapath %s of type %s", | |
524 | datapath_name, datapath_type); | |
525 | return ENOMEM; | |
526 | } | |
527 | ||
528 | /* Initialize. */ | |
abe7b10f | 529 | ovs_mutex_lock(&ofproto_mutex); |
abe529af BP |
530 | memset(ofproto, 0, sizeof *ofproto); |
531 | ofproto->ofproto_class = class; | |
532 | ofproto->name = xstrdup(datapath_name); | |
533 | ofproto->type = xstrdup(datapath_type); | |
534 | hmap_insert(&all_ofprotos, &ofproto->hmap_node, | |
535 | hash_string(ofproto->name, 0)); | |
536 | ofproto->datapath_id = 0; | |
8402c74b | 537 | ofproto->forward_bpdu = false; |
abe529af | 538 | ofproto->fallback_dpid = pick_fallback_dpid(); |
061bfea4 BP |
539 | ofproto->mfr_desc = NULL; |
540 | ofproto->hw_desc = NULL; | |
541 | ofproto->sw_desc = NULL; | |
542 | ofproto->serial_desc = NULL; | |
543 | ofproto->dp_desc = NULL; | |
7257b535 | 544 | ofproto->frag_handling = OFPC_FRAG_NORMAL; |
abe529af | 545 | hmap_init(&ofproto->ports); |
fdcea803 | 546 | hmap_init(&ofproto->ofport_usage); |
abe529af | 547 | shash_init(&ofproto->port_by_name); |
e1b1d06a | 548 | simap_init(&ofproto->ofp_requests); |
430dbb14 | 549 | ofproto->max_ports = ofp_to_u16(OFPP_MAX); |
448c2fa8 | 550 | ofproto->eviction_group_timer = LLONG_MIN; |
6c1491fb BP |
551 | ofproto->tables = NULL; |
552 | ofproto->n_tables = 0; | |
621b8064 | 553 | ofproto->tables_version = CLS_MIN_VERSION; |
98eaac36 | 554 | hindex_init(&ofproto->cookies); |
35f48b8b | 555 | hmap_init(&ofproto->learned_cookies); |
e503cc19 | 556 | list_init(&ofproto->expirable); |
abe529af | 557 | ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name); |
35412852 | 558 | guarded_list_init(&ofproto->rule_executes); |
52a90c29 BP |
559 | ofproto->vlan_bitmap = NULL; |
560 | ofproto->vlans_changed = false; | |
ada3428f | 561 | ofproto->min_mtu = INT_MAX; |
7395c052 NZ |
562 | ovs_rwlock_init(&ofproto->groups_rwlock); |
563 | hmap_init(&ofproto->groups); | |
abe7b10f | 564 | ovs_mutex_unlock(&ofproto_mutex); |
0ae01c64 | 565 | ofproto->ogf.types = 0xf; |
7cb279c2 SH |
566 | ofproto->ogf.capabilities = OFPGFC_CHAINING | OFPGFC_SELECT_LIVENESS | |
567 | OFPGFC_SELECT_WEIGHT; | |
08d1e234 BP |
568 | for (i = 0; i < 4; i++) { |
569 | ofproto->ogf.max_groups[i] = OFPG_MAX; | |
570 | ofproto->ogf.ofpacts[i] = (UINT64_C(1) << N_OFPACTS) - 1; | |
571 | } | |
9558d2a5 | 572 | tun_metadata_init(); |
abe529af | 573 | |
0f5f95a9 | 574 | error = ofproto->ofproto_class->construct(ofproto); |
19a87e36 | 575 | if (error) { |
abe529af | 576 | VLOG_ERR("failed to open datapath %s: %s", |
10a89ef0 | 577 | datapath_name, ovs_strerror(error)); |
58f19539 | 578 | connmgr_destroy(ofproto->connmgr); |
abe529af | 579 | ofproto_destroy__(ofproto); |
19a87e36 BP |
580 | return error; |
581 | } | |
073e2a6f | 582 | |
c2f0373a | 583 | /* Check that hidden tables, if any, are at the end. */ |
cb22974d | 584 | ovs_assert(ofproto->n_tables); |
c2f0373a BP |
585 | for (i = 0; i + 1 < ofproto->n_tables; i++) { |
586 | enum oftable_flags flags = ofproto->tables[i].flags; | |
587 | enum oftable_flags next_flags = ofproto->tables[i + 1].flags; | |
588 | ||
cb22974d | 589 | ovs_assert(!(flags & OFTABLE_HIDDEN) || next_flags & OFTABLE_HIDDEN); |
c2f0373a | 590 | } |
19a87e36 | 591 | |
abe529af | 592 | ofproto->datapath_id = pick_datapath_id(ofproto); |
abe529af | 593 | init_ports(ofproto); |
7aa697dd | 594 | |
9cae45dc JR |
595 | /* Initialize meters table. */ |
596 | if (ofproto->ofproto_class->meter_get_features) { | |
597 | ofproto->ofproto_class->meter_get_features(ofproto, | |
598 | &ofproto->meter_features); | |
599 | } else { | |
600 | memset(&ofproto->meter_features, 0, sizeof ofproto->meter_features); | |
601 | } | |
602 | ofproto->meters = xzalloc((ofproto->meter_features.max_meters + 1) | |
603 | * sizeof(struct meter *)); | |
604 | ||
621b8064 | 605 | /* Set the initial tables version. */ |
39c94593 | 606 | ofproto_bump_tables_version(ofproto); |
621b8064 | 607 | |
abe529af | 608 | *ofprotop = ofproto; |
064af421 BP |
609 | return 0; |
610 | } | |
611 | ||
91858960 BP |
612 | /* Must be called (only) by an ofproto implementation in its constructor |
613 | * function. See the large comment on 'construct' in struct ofproto_class for | |
614 | * details. */ | |
0f5f95a9 BP |
615 | void |
616 | ofproto_init_tables(struct ofproto *ofproto, int n_tables) | |
617 | { | |
618 | struct oftable *table; | |
619 | ||
cb22974d BP |
620 | ovs_assert(!ofproto->n_tables); |
621 | ovs_assert(n_tables >= 1 && n_tables <= 255); | |
0f5f95a9 BP |
622 | |
623 | ofproto->n_tables = n_tables; | |
624 | ofproto->tables = xmalloc(n_tables * sizeof *ofproto->tables); | |
625 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
626 | oftable_init(table); | |
627 | } | |
628 | } | |
629 | ||
91858960 BP |
630 | /* To be optionally called (only) by an ofproto implementation in its |
631 | * constructor function. See the large comment on 'construct' in struct | |
632 | * ofproto_class for details. | |
633 | * | |
634 | * Sets the maximum number of ports to 'max_ports'. The ofproto generic layer | |
635 | * will then ensure that actions passed into the ofproto implementation will | |
636 | * not refer to OpenFlow ports numbered 'max_ports' or higher. If this | |
637 | * function is not called, there will be no such restriction. | |
638 | * | |
639 | * Reserved ports numbered OFPP_MAX and higher are special and not subject to | |
640 | * the 'max_ports' restriction. */ | |
641 | void | |
430dbb14 | 642 | ofproto_init_max_ports(struct ofproto *ofproto, uint16_t max_ports) |
91858960 | 643 | { |
430dbb14 | 644 | ovs_assert(max_ports <= ofp_to_u16(OFPP_MAX)); |
91858960 BP |
645 | ofproto->max_ports = max_ports; |
646 | } | |
647 | ||
e825ace2 BP |
648 | uint64_t |
649 | ofproto_get_datapath_id(const struct ofproto *ofproto) | |
650 | { | |
651 | return ofproto->datapath_id; | |
652 | } | |
653 | ||
064af421 BP |
654 | void |
655 | ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id) | |
656 | { | |
657 | uint64_t old_dpid = p->datapath_id; | |
fa60c019 | 658 | p->datapath_id = datapath_id ? datapath_id : pick_datapath_id(p); |
064af421 | 659 | if (p->datapath_id != old_dpid) { |
76ce9432 BP |
660 | /* Force all active connections to reconnect, since there is no way to |
661 | * notify a controller that the datapath ID has changed. */ | |
fa05809b | 662 | ofproto_reconnect_controllers(p); |
064af421 BP |
663 | } |
664 | } | |
665 | ||
76ce9432 BP |
666 | void |
667 | ofproto_set_controllers(struct ofproto *p, | |
668 | const struct ofproto_controller *controllers, | |
1d9ffc17 | 669 | size_t n_controllers, uint32_t allowed_versions) |
76ce9432 | 670 | { |
1d9ffc17 SH |
671 | connmgr_set_controllers(p->connmgr, controllers, n_controllers, |
672 | allowed_versions); | |
064af421 BP |
673 | } |
674 | ||
31681a5d JP |
675 | void |
676 | ofproto_set_fail_mode(struct ofproto *p, enum ofproto_fail_mode fail_mode) | |
677 | { | |
19a87e36 | 678 | connmgr_set_fail_mode(p->connmgr, fail_mode); |
31681a5d JP |
679 | } |
680 | ||
fa05809b BP |
681 | /* Drops the connections between 'ofproto' and all of its controllers, forcing |
682 | * them to reconnect. */ | |
683 | void | |
684 | ofproto_reconnect_controllers(struct ofproto *ofproto) | |
685 | { | |
19a87e36 | 686 | connmgr_reconnect(ofproto->connmgr); |
917e50e1 BP |
687 | } |
688 | ||
689 | /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s | |
690 | * in-band control should guarantee access, in the same way that in-band | |
691 | * control guarantees access to OpenFlow controllers. */ | |
692 | void | |
693 | ofproto_set_extra_in_band_remotes(struct ofproto *ofproto, | |
694 | const struct sockaddr_in *extras, size_t n) | |
695 | { | |
19a87e36 | 696 | connmgr_set_extra_in_band_remotes(ofproto->connmgr, extras, n); |
917e50e1 BP |
697 | } |
698 | ||
b1da6250 BP |
699 | /* Sets the OpenFlow queue used by flows set up by in-band control on |
700 | * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control | |
701 | * flows will use the default queue. */ | |
702 | void | |
703 | ofproto_set_in_band_queue(struct ofproto *ofproto, int queue_id) | |
704 | { | |
19a87e36 | 705 | connmgr_set_in_band_queue(ofproto->connmgr, queue_id); |
b1da6250 BP |
706 | } |
707 | ||
084f5290 SH |
708 | /* Sets the number of flows at which eviction from the kernel flow table |
709 | * will occur. */ | |
710 | void | |
e79a6c83 | 711 | ofproto_set_flow_limit(unsigned limit) |
084f5290 | 712 | { |
e79a6c83 | 713 | ofproto_flow_limit = limit; |
084f5290 SH |
714 | } |
715 | ||
72310b04 JS |
716 | /* Sets the maximum idle time for flows in the datapath before they are |
717 | * expired. */ | |
718 | void | |
719 | ofproto_set_max_idle(unsigned max_idle) | |
720 | { | |
721 | ofproto_max_idle = max_idle; | |
722 | } | |
723 | ||
b53055f4 | 724 | /* If forward_bpdu is true, the NORMAL action will forward frames with |
8402c74b SS |
725 | * reserved (e.g. STP) destination Ethernet addresses. if forward_bpdu is false, |
726 | * the NORMAL action will drop these frames. */ | |
727 | void | |
728 | ofproto_set_forward_bpdu(struct ofproto *ofproto, bool forward_bpdu) | |
729 | { | |
730 | bool old_val = ofproto->forward_bpdu; | |
731 | ofproto->forward_bpdu = forward_bpdu; | |
732 | if (old_val != ofproto->forward_bpdu) { | |
733 | if (ofproto->ofproto_class->forward_bpdu_changed) { | |
734 | ofproto->ofproto_class->forward_bpdu_changed(ofproto); | |
735 | } | |
b53055f4 | 736 | } |
8402c74b SS |
737 | } |
738 | ||
e764773c | 739 | /* Sets the MAC aging timeout for the OFPP_NORMAL action on 'ofproto' to |
c4069512 BP |
740 | * 'idle_time', in seconds, and the maximum number of MAC table entries to |
741 | * 'max_entries'. */ | |
e764773c | 742 | void |
c4069512 BP |
743 | ofproto_set_mac_table_config(struct ofproto *ofproto, unsigned idle_time, |
744 | size_t max_entries) | |
e764773c | 745 | { |
c4069512 BP |
746 | if (ofproto->ofproto_class->set_mac_table_config) { |
747 | ofproto->ofproto_class->set_mac_table_config(ofproto, idle_time, | |
748 | max_entries); | |
e764773c BP |
749 | } |
750 | } | |
751 | ||
7c38d0a5 FL |
752 | /* Multicast snooping configuration. */ |
753 | ||
754 | /* Configures multicast snooping on 'ofproto' using the settings | |
755 | * defined in 's'. If 's' is NULL, disables multicast snooping. | |
756 | * | |
757 | * Returns 0 if successful, otherwise a positive errno value. */ | |
758 | int | |
759 | ofproto_set_mcast_snooping(struct ofproto *ofproto, | |
760 | const struct ofproto_mcast_snooping_settings *s) | |
761 | { | |
762 | return (ofproto->ofproto_class->set_mcast_snooping | |
763 | ? ofproto->ofproto_class->set_mcast_snooping(ofproto, s) | |
764 | : EOPNOTSUPP); | |
765 | } | |
766 | ||
8e04a33f | 767 | /* Configures multicast snooping flood settings on 'ofp_port' of 'ofproto'. |
7c38d0a5 FL |
768 | * |
769 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
770 | int | |
8e04a33f FL |
771 | ofproto_port_set_mcast_snooping(struct ofproto *ofproto, void *aux, |
772 | const struct ofproto_mcast_snooping_port_settings *s) | |
7c38d0a5 FL |
773 | { |
774 | return (ofproto->ofproto_class->set_mcast_snooping_port | |
8e04a33f | 775 | ? ofproto->ofproto_class->set_mcast_snooping_port(ofproto, aux, s) |
7c38d0a5 FL |
776 | : EOPNOTSUPP); |
777 | } | |
778 | ||
f2eee189 AW |
779 | void |
780 | ofproto_set_n_dpdk_rxqs(int n_rxqs) | |
781 | { | |
782 | n_dpdk_rxqs = MAX(n_rxqs, 0); | |
783 | } | |
784 | ||
785 | void | |
786 | ofproto_set_cpu_mask(const char *cmask) | |
787 | { | |
788 | free(pmd_cpu_mask); | |
789 | ||
790 | pmd_cpu_mask = cmask ? xstrdup(cmask) : NULL; | |
791 | } | |
792 | ||
448a4b2f | 793 | void |
30ea0da7 | 794 | ofproto_set_threads(int n_handlers_, int n_revalidators_) |
448a4b2f | 795 | { |
e79a6c83 EJ |
796 | int threads = MAX(count_cpu_cores(), 2); |
797 | ||
30ea0da7 GS |
798 | n_revalidators = MAX(n_revalidators_, 0); |
799 | n_handlers = MAX(n_handlers_, 0); | |
e79a6c83 EJ |
800 | |
801 | if (!n_revalidators) { | |
802 | n_revalidators = n_handlers | |
803 | ? MAX(threads - (int) n_handlers, 1) | |
804 | : threads / 4 + 1; | |
805 | } | |
806 | ||
807 | if (!n_handlers) { | |
808 | n_handlers = MAX(threads - (int) n_revalidators, 1); | |
809 | } | |
448a4b2f AW |
810 | } |
811 | ||
8b6ff729 BP |
812 | void |
813 | ofproto_set_dp_desc(struct ofproto *p, const char *dp_desc) | |
814 | { | |
815 | free(p->dp_desc); | |
816 | p->dp_desc = dp_desc ? xstrdup(dp_desc) : NULL; | |
817 | } | |
818 | ||
064af421 | 819 | int |
81e2083f | 820 | ofproto_set_snoops(struct ofproto *ofproto, const struct sset *snoops) |
064af421 | 821 | { |
19a87e36 | 822 | return connmgr_set_snoops(ofproto->connmgr, snoops); |
064af421 BP |
823 | } |
824 | ||
825 | int | |
0193b2af JG |
826 | ofproto_set_netflow(struct ofproto *ofproto, |
827 | const struct netflow_options *nf_options) | |
064af421 | 828 | { |
abe529af BP |
829 | if (nf_options && sset_is_empty(&nf_options->collectors)) { |
830 | nf_options = NULL; | |
831 | } | |
832 | ||
833 | if (ofproto->ofproto_class->set_netflow) { | |
834 | return ofproto->ofproto_class->set_netflow(ofproto, nf_options); | |
064af421 | 835 | } else { |
abe529af | 836 | return nf_options ? EOPNOTSUPP : 0; |
064af421 BP |
837 | } |
838 | } | |
839 | ||
abe529af | 840 | int |
72b06300 BP |
841 | ofproto_set_sflow(struct ofproto *ofproto, |
842 | const struct ofproto_sflow_options *oso) | |
843 | { | |
abe529af BP |
844 | if (oso && sset_is_empty(&oso->targets)) { |
845 | oso = NULL; | |
846 | } | |
72b06300 | 847 | |
abe529af BP |
848 | if (ofproto->ofproto_class->set_sflow) { |
849 | return ofproto->ofproto_class->set_sflow(ofproto, oso); | |
72b06300 | 850 | } else { |
abe529af | 851 | return oso ? EOPNOTSUPP : 0; |
72b06300 BP |
852 | } |
853 | } | |
29089a54 RL |
854 | |
855 | int | |
856 | ofproto_set_ipfix(struct ofproto *ofproto, | |
857 | const struct ofproto_ipfix_bridge_exporter_options *bo, | |
858 | const struct ofproto_ipfix_flow_exporter_options *fo, | |
859 | size_t n_fo) | |
860 | { | |
861 | if (ofproto->ofproto_class->set_ipfix) { | |
862 | return ofproto->ofproto_class->set_ipfix(ofproto, bo, fo, n_fo); | |
863 | } else { | |
864 | return (bo || fo) ? EOPNOTSUPP : 0; | |
865 | } | |
866 | } | |
40358701 GS |
867 | |
868 | void | |
869 | ofproto_set_flow_restore_wait(bool flow_restore_wait_db) | |
870 | { | |
871 | flow_restore_wait = flow_restore_wait_db; | |
872 | } | |
873 | ||
874 | bool | |
875 | ofproto_get_flow_restore_wait(void) | |
876 | { | |
877 | return flow_restore_wait; | |
878 | } | |
879 | ||
e7934396 | 880 | \f |
21f7563c JP |
881 | /* Spanning Tree Protocol (STP) configuration. */ |
882 | ||
883 | /* Configures STP on 'ofproto' using the settings defined in 's'. If | |
884 | * 's' is NULL, disables STP. | |
885 | * | |
886 | * Returns 0 if successful, otherwise a positive errno value. */ | |
887 | int | |
888 | ofproto_set_stp(struct ofproto *ofproto, | |
889 | const struct ofproto_stp_settings *s) | |
890 | { | |
891 | return (ofproto->ofproto_class->set_stp | |
892 | ? ofproto->ofproto_class->set_stp(ofproto, s) | |
893 | : EOPNOTSUPP); | |
894 | } | |
895 | ||
896 | /* Retrieves STP status of 'ofproto' and stores it in 's'. If the | |
897 | * 'enabled' member of 's' is false, then the other members are not | |
898 | * meaningful. | |
899 | * | |
900 | * Returns 0 if successful, otherwise a positive errno value. */ | |
901 | int | |
902 | ofproto_get_stp_status(struct ofproto *ofproto, | |
903 | struct ofproto_stp_status *s) | |
904 | { | |
905 | return (ofproto->ofproto_class->get_stp_status | |
906 | ? ofproto->ofproto_class->get_stp_status(ofproto, s) | |
907 | : EOPNOTSUPP); | |
908 | } | |
909 | ||
910 | /* Configures STP on 'ofp_port' of 'ofproto' using the settings defined | |
911 | * in 's'. The caller is responsible for assigning STP port numbers | |
912 | * (using the 'port_num' member in the range of 1 through 255, inclusive) | |
913 | * and ensuring there are no duplicates. If the 's' is NULL, then STP | |
914 | * is disabled on the port. | |
915 | * | |
916 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
917 | int | |
4e022ec0 | 918 | ofproto_port_set_stp(struct ofproto *ofproto, ofp_port_t ofp_port, |
21f7563c JP |
919 | const struct ofproto_port_stp_settings *s) |
920 | { | |
921 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
922 | if (!ofport) { | |
923 | VLOG_WARN("%s: cannot configure STP on nonexistent port %"PRIu16, | |
924 | ofproto->name, ofp_port); | |
925 | return ENODEV; | |
926 | } | |
927 | ||
928 | return (ofproto->ofproto_class->set_stp_port | |
929 | ? ofproto->ofproto_class->set_stp_port(ofport, s) | |
930 | : EOPNOTSUPP); | |
931 | } | |
932 | ||
933 | /* Retrieves STP port status of 'ofp_port' on 'ofproto' and stores it in | |
934 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
935 | * are not meaningful. | |
936 | * | |
937 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
938 | int | |
4e022ec0 | 939 | ofproto_port_get_stp_status(struct ofproto *ofproto, ofp_port_t ofp_port, |
21f7563c JP |
940 | struct ofproto_port_stp_status *s) |
941 | { | |
942 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
943 | if (!ofport) { | |
b0a5c43b JP |
944 | VLOG_WARN_RL(&rl, "%s: cannot get STP status on nonexistent " |
945 | "port %"PRIu16, ofproto->name, ofp_port); | |
21f7563c JP |
946 | return ENODEV; |
947 | } | |
948 | ||
949 | return (ofproto->ofproto_class->get_stp_port_status | |
950 | ? ofproto->ofproto_class->get_stp_port_status(ofport, s) | |
951 | : EOPNOTSUPP); | |
952 | } | |
fd28ce3a JS |
953 | |
954 | /* Retrieves STP port statistics of 'ofp_port' on 'ofproto' and stores it in | |
955 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
956 | * are not meaningful. | |
957 | * | |
958 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
959 | int | |
960 | ofproto_port_get_stp_stats(struct ofproto *ofproto, ofp_port_t ofp_port, | |
961 | struct ofproto_port_stp_stats *s) | |
962 | { | |
963 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
964 | if (!ofport) { | |
965 | VLOG_WARN_RL(&rl, "%s: cannot get STP stats on nonexistent " | |
966 | "port %"PRIu16, ofproto->name, ofp_port); | |
967 | return ENODEV; | |
968 | } | |
969 | ||
970 | return (ofproto->ofproto_class->get_stp_port_stats | |
971 | ? ofproto->ofproto_class->get_stp_port_stats(ofport, s) | |
972 | : EOPNOTSUPP); | |
973 | } | |
9efd308e DV |
974 | |
975 | /* Rapid Spanning Tree Protocol (RSTP) configuration. */ | |
976 | ||
977 | /* Configures RSTP on 'ofproto' using the settings defined in 's'. If | |
978 | * 's' is NULL, disables RSTP. | |
979 | * | |
980 | * Returns 0 if successful, otherwise a positive errno value. */ | |
981 | int | |
982 | ofproto_set_rstp(struct ofproto *ofproto, | |
983 | const struct ofproto_rstp_settings *s) | |
984 | { | |
985 | if (!ofproto->ofproto_class->set_rstp) { | |
986 | return EOPNOTSUPP; | |
987 | } | |
988 | ofproto->ofproto_class->set_rstp(ofproto, s); | |
989 | return 0; | |
990 | } | |
991 | ||
992 | /* Retrieves RSTP status of 'ofproto' and stores it in 's'. If the | |
993 | * 'enabled' member of 's' is false, then the other members are not | |
994 | * meaningful. | |
995 | * | |
996 | * Returns 0 if successful, otherwise a positive errno value. */ | |
997 | int | |
998 | ofproto_get_rstp_status(struct ofproto *ofproto, | |
999 | struct ofproto_rstp_status *s) | |
1000 | { | |
1001 | if (!ofproto->ofproto_class->get_rstp_status) { | |
1002 | return EOPNOTSUPP; | |
1003 | } | |
1004 | ofproto->ofproto_class->get_rstp_status(ofproto, s); | |
1005 | return 0; | |
1006 | } | |
1007 | ||
1008 | /* Configures RSTP on 'ofp_port' of 'ofproto' using the settings defined | |
1009 | * in 's'. The caller is responsible for assigning RSTP port numbers | |
1010 | * (using the 'port_num' member in the range of 1 through 255, inclusive) | |
1011 | * and ensuring there are no duplicates. If the 's' is NULL, then RSTP | |
1012 | * is disabled on the port. | |
1013 | * | |
1014 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
1015 | int | |
1016 | ofproto_port_set_rstp(struct ofproto *ofproto, ofp_port_t ofp_port, | |
1017 | const struct ofproto_port_rstp_settings *s) | |
1018 | { | |
1019 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1020 | if (!ofport) { | |
1021 | VLOG_WARN("%s: cannot configure RSTP on nonexistent port %"PRIu16, | |
1022 | ofproto->name, ofp_port); | |
1023 | return ENODEV; | |
1024 | } | |
1025 | ||
1026 | if (!ofproto->ofproto_class->set_rstp_port) { | |
1027 | return EOPNOTSUPP; | |
1028 | } | |
1029 | ofproto->ofproto_class->set_rstp_port(ofport, s); | |
1030 | return 0; | |
1031 | } | |
1032 | ||
1033 | /* Retrieves RSTP port status of 'ofp_port' on 'ofproto' and stores it in | |
1034 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
1035 | * are not meaningful. | |
1036 | * | |
1037 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
1038 | int | |
1039 | ofproto_port_get_rstp_status(struct ofproto *ofproto, ofp_port_t ofp_port, | |
1040 | struct ofproto_port_rstp_status *s) | |
1041 | { | |
1042 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1043 | if (!ofport) { | |
1044 | VLOG_WARN_RL(&rl, "%s: cannot get RSTP status on nonexistent " | |
1045 | "port %"PRIu16, ofproto->name, ofp_port); | |
1046 | return ENODEV; | |
1047 | } | |
1048 | ||
1049 | if (!ofproto->ofproto_class->get_rstp_port_status) { | |
1050 | return EOPNOTSUPP; | |
1051 | } | |
1052 | ofproto->ofproto_class->get_rstp_port_status(ofport, s); | |
1053 | return 0; | |
1054 | } | |
21f7563c | 1055 | \f |
8b36f51e EJ |
1056 | /* Queue DSCP configuration. */ |
1057 | ||
1058 | /* Registers meta-data associated with the 'n_qdscp' Qualities of Service | |
1059 | * 'queues' attached to 'ofport'. This data is not intended to be sufficient | |
1060 | * to implement QoS. Instead, it is used to implement features which require | |
1061 | * knowledge of what queues exist on a port, and some basic information about | |
1062 | * them. | |
1063 | * | |
1064 | * Returns 0 if successful, otherwise a positive errno value. */ | |
1065 | int | |
4e022ec0 | 1066 | ofproto_port_set_queues(struct ofproto *ofproto, ofp_port_t ofp_port, |
8b36f51e EJ |
1067 | const struct ofproto_port_queue *queues, |
1068 | size_t n_queues) | |
1069 | { | |
1070 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1071 | ||
1072 | if (!ofport) { | |
1073 | VLOG_WARN("%s: cannot set queues on nonexistent port %"PRIu16, | |
1074 | ofproto->name, ofp_port); | |
1075 | return ENODEV; | |
1076 | } | |
1077 | ||
1078 | return (ofproto->ofproto_class->set_queues | |
1079 | ? ofproto->ofproto_class->set_queues(ofport, queues, n_queues) | |
1080 | : EOPNOTSUPP); | |
1081 | } | |
1082 | \f | |
0477baa9 DF |
1083 | /* LLDP configuration. */ |
1084 | void | |
1085 | ofproto_port_set_lldp(struct ofproto *ofproto, | |
1086 | ofp_port_t ofp_port, | |
1087 | const struct smap *cfg) | |
1088 | { | |
1089 | struct ofport *ofport; | |
1090 | int error; | |
1091 | ||
1092 | ofport = ofproto_get_port(ofproto, ofp_port); | |
1093 | if (!ofport) { | |
1094 | VLOG_WARN("%s: cannot configure LLDP on nonexistent port %"PRIu16, | |
1095 | ofproto->name, ofp_port); | |
1096 | return; | |
1097 | } | |
1098 | error = (ofproto->ofproto_class->set_lldp | |
1099 | ? ofproto->ofproto_class->set_lldp(ofport, cfg) | |
1100 | : EOPNOTSUPP); | |
1101 | if (error) { | |
1102 | VLOG_WARN("%s: lldp configuration on port %"PRIu16" (%s) failed (%s)", | |
1103 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
1104 | ovs_strerror(error)); | |
1105 | } | |
1106 | } | |
1107 | ||
1108 | int | |
1109 | ofproto_set_aa(struct ofproto *ofproto, void *aux OVS_UNUSED, | |
1110 | const struct aa_settings *s) | |
1111 | { | |
1112 | if (!ofproto->ofproto_class->set_aa) { | |
1113 | return EOPNOTSUPP; | |
1114 | } | |
1115 | ofproto->ofproto_class->set_aa(ofproto, s); | |
1116 | return 0; | |
1117 | } | |
1118 | ||
1119 | int | |
1120 | ofproto_aa_mapping_register(struct ofproto *ofproto, void *aux, | |
1121 | const struct aa_mapping_settings *s) | |
1122 | { | |
1123 | if (!ofproto->ofproto_class->aa_mapping_set) { | |
1124 | return EOPNOTSUPP; | |
1125 | } | |
1126 | ofproto->ofproto_class->aa_mapping_set(ofproto, aux, s); | |
1127 | return 0; | |
1128 | } | |
1129 | ||
1130 | int | |
1131 | ofproto_aa_mapping_unregister(struct ofproto *ofproto, void *aux) | |
1132 | { | |
1133 | if (!ofproto->ofproto_class->aa_mapping_unset) { | |
1134 | return EOPNOTSUPP; | |
1135 | } | |
1136 | ofproto->ofproto_class->aa_mapping_unset(ofproto, aux); | |
1137 | return 0; | |
1138 | } | |
1139 | ||
1140 | int | |
1141 | ofproto_aa_vlan_get_queued(struct ofproto *ofproto, | |
1142 | struct ovs_list *list) | |
1143 | { | |
1144 | if (!ofproto->ofproto_class->aa_vlan_get_queued) { | |
1145 | return EOPNOTSUPP; | |
1146 | } | |
1147 | ofproto->ofproto_class->aa_vlan_get_queued(ofproto, list); | |
1148 | return 0; | |
1149 | } | |
1150 | ||
1151 | unsigned int | |
1152 | ofproto_aa_vlan_get_queue_size(struct ofproto *ofproto) | |
1153 | { | |
1154 | if (!ofproto->ofproto_class->aa_vlan_get_queue_size) { | |
1155 | return EOPNOTSUPP; | |
1156 | } | |
1157 | return ofproto->ofproto_class->aa_vlan_get_queue_size(ofproto); | |
1158 | } | |
1159 | ||
e7934396 BP |
1160 | /* Connectivity Fault Management configuration. */ |
1161 | ||
892815f5 | 1162 | /* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */ |
e7934396 | 1163 | void |
4e022ec0 | 1164 | ofproto_port_clear_cfm(struct ofproto *ofproto, ofp_port_t ofp_port) |
e7934396 | 1165 | { |
abe529af BP |
1166 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1167 | if (ofport && ofproto->ofproto_class->set_cfm) { | |
a5610457 | 1168 | ofproto->ofproto_class->set_cfm(ofport, NULL); |
e7934396 BP |
1169 | } |
1170 | } | |
72b06300 | 1171 | |
892815f5 | 1172 | /* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes |
93b8df38 EJ |
1173 | * basic configuration from the configuration members in 'cfm', and the remote |
1174 | * maintenance point ID from remote_mpid. Ignores the statistics members of | |
1175 | * 'cfm'. | |
e7934396 | 1176 | * |
892815f5 | 1177 | * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */ |
e7934396 | 1178 | void |
4e022ec0 | 1179 | ofproto_port_set_cfm(struct ofproto *ofproto, ofp_port_t ofp_port, |
a5610457 | 1180 | const struct cfm_settings *s) |
e7934396 BP |
1181 | { |
1182 | struct ofport *ofport; | |
abe529af | 1183 | int error; |
e7934396 | 1184 | |
abe529af | 1185 | ofport = ofproto_get_port(ofproto, ofp_port); |
e7934396 | 1186 | if (!ofport) { |
892815f5 BP |
1187 | VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16, |
1188 | ofproto->name, ofp_port); | |
e7934396 BP |
1189 | return; |
1190 | } | |
1191 | ||
93b8df38 EJ |
1192 | /* XXX: For configuration simplicity, we only support one remote_mpid |
1193 | * outside of the CFM module. It's not clear if this is the correct long | |
1194 | * term solution or not. */ | |
abe529af | 1195 | error = (ofproto->ofproto_class->set_cfm |
a5610457 | 1196 | ? ofproto->ofproto_class->set_cfm(ofport, s) |
abe529af BP |
1197 | : EOPNOTSUPP); |
1198 | if (error) { | |
1199 | VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed (%s)", | |
1200 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
10a89ef0 | 1201 | ovs_strerror(error)); |
e7934396 | 1202 | } |
e7934396 | 1203 | } |
e7934396 | 1204 | |
ccc09689 EJ |
1205 | /* Configures BFD on 'ofp_port' in 'ofproto'. This function has no effect if |
1206 | * 'ofproto' does not have a port 'ofp_port'. */ | |
1207 | void | |
4e022ec0 | 1208 | ofproto_port_set_bfd(struct ofproto *ofproto, ofp_port_t ofp_port, |
ccc09689 EJ |
1209 | const struct smap *cfg) |
1210 | { | |
1211 | struct ofport *ofport; | |
1212 | int error; | |
1213 | ||
1214 | ofport = ofproto_get_port(ofproto, ofp_port); | |
1215 | if (!ofport) { | |
1216 | VLOG_WARN("%s: cannot configure bfd on nonexistent port %"PRIu16, | |
1217 | ofproto->name, ofp_port); | |
e8999bdc | 1218 | return; |
ccc09689 EJ |
1219 | } |
1220 | ||
1221 | error = (ofproto->ofproto_class->set_bfd | |
1222 | ? ofproto->ofproto_class->set_bfd(ofport, cfg) | |
1223 | : EOPNOTSUPP); | |
1224 | if (error) { | |
1225 | VLOG_WARN("%s: bfd configuration on port %"PRIu16" (%s) failed (%s)", | |
1226 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
10a89ef0 | 1227 | ovs_strerror(error)); |
ccc09689 EJ |
1228 | } |
1229 | } | |
1230 | ||
8f5514fe AW |
1231 | /* Checks the status change of BFD on 'ofport'. |
1232 | * | |
1233 | * Returns true if 'ofproto_class' does not support 'bfd_status_changed'. */ | |
1234 | bool | |
1235 | ofproto_port_bfd_status_changed(struct ofproto *ofproto, ofp_port_t ofp_port) | |
1236 | { | |
1237 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1238 | return (ofport && ofproto->ofproto_class->bfd_status_changed | |
1239 | ? ofproto->ofproto_class->bfd_status_changed(ofport) | |
1240 | : true); | |
1241 | } | |
1242 | ||
88bf179a | 1243 | /* Populates 'status' with the status of BFD on 'ofport'. Returns 0 on |
8f5514fe AW |
1244 | * success. Returns a positive errno otherwise. Has no effect if 'ofp_port' |
1245 | * is not an OpenFlow port in 'ofproto'. | |
88bf179a AW |
1246 | * |
1247 | * The caller must provide and own '*status'. */ | |
ccc09689 | 1248 | int |
4e022ec0 | 1249 | ofproto_port_get_bfd_status(struct ofproto *ofproto, ofp_port_t ofp_port, |
ccc09689 EJ |
1250 | struct smap *status) |
1251 | { | |
1252 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1253 | return (ofport && ofproto->ofproto_class->get_bfd_status | |
1254 | ? ofproto->ofproto_class->get_bfd_status(ofport, status) | |
1255 | : EOPNOTSUPP); | |
1256 | } | |
1257 | ||
fa066f01 BP |
1258 | /* Checks the status of LACP negotiation for 'ofp_port' within ofproto. |
1259 | * Returns 1 if LACP partner information for 'ofp_port' is up-to-date, | |
1260 | * 0 if LACP partner information is not current (generally indicating a | |
1261 | * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */ | |
1262 | int | |
4e022ec0 | 1263 | ofproto_port_is_lacp_current(struct ofproto *ofproto, ofp_port_t ofp_port) |
fa066f01 | 1264 | { |
abe529af BP |
1265 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1266 | return (ofport && ofproto->ofproto_class->port_is_lacp_current | |
1267 | ? ofproto->ofproto_class->port_is_lacp_current(ofport) | |
fa066f01 | 1268 | : -1); |
e7934396 | 1269 | } |
50b9699f NM |
1270 | |
1271 | int | |
1272 | ofproto_port_get_lacp_stats(const struct ofport *port, struct lacp_slave_stats *stats) | |
1273 | { | |
1274 | struct ofproto *ofproto = port->ofproto; | |
1275 | int error; | |
1276 | ||
1277 | if (ofproto->ofproto_class->port_get_lacp_stats) { | |
1278 | error = ofproto->ofproto_class->port_get_lacp_stats(port, stats); | |
1279 | } else { | |
1280 | error = EOPNOTSUPP; | |
1281 | } | |
1282 | ||
1283 | return error; | |
1284 | } | |
e7934396 | 1285 | \f |
fa066f01 | 1286 | /* Bundles. */ |
e7934396 | 1287 | |
abe529af BP |
1288 | /* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'. |
1289 | * A bundle is the same concept as a Port in OVSDB, that is, it consists of one | |
1290 | * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN | |
1291 | * configuration plus, if there is more than one slave, a bonding | |
1292 | * configuration. | |
1293 | * | |
1294 | * If 'aux' is already registered then this function updates its configuration | |
1295 | * to 's'. Otherwise, this function registers a new bundle. | |
1296 | * | |
1297 | * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL | |
1298 | * port. */ | |
1299 | int | |
1300 | ofproto_bundle_register(struct ofproto *ofproto, void *aux, | |
1301 | const struct ofproto_bundle_settings *s) | |
fa066f01 | 1302 | { |
abe529af BP |
1303 | return (ofproto->ofproto_class->bundle_set |
1304 | ? ofproto->ofproto_class->bundle_set(ofproto, aux, s) | |
1305 | : EOPNOTSUPP); | |
fa066f01 BP |
1306 | } |
1307 | ||
abe529af BP |
1308 | /* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'. |
1309 | * If no such bundle has been registered, this has no effect. */ | |
1310 | int | |
1311 | ofproto_bundle_unregister(struct ofproto *ofproto, void *aux) | |
e7934396 | 1312 | { |
abe529af | 1313 | return ofproto_bundle_register(ofproto, aux, NULL); |
e7934396 | 1314 | } |
fa066f01 | 1315 | |
e7934396 | 1316 | \f |
abe529af BP |
1317 | /* Registers a mirror associated with client data pointer 'aux' in 'ofproto'. |
1318 | * If 'aux' is already registered then this function updates its configuration | |
c06bba01 | 1319 | * to 's'. Otherwise, this function registers a new mirror. */ |
abe529af BP |
1320 | int |
1321 | ofproto_mirror_register(struct ofproto *ofproto, void *aux, | |
1322 | const struct ofproto_mirror_settings *s) | |
064af421 | 1323 | { |
abe529af BP |
1324 | return (ofproto->ofproto_class->mirror_set |
1325 | ? ofproto->ofproto_class->mirror_set(ofproto, aux, s) | |
1326 | : EOPNOTSUPP); | |
064af421 BP |
1327 | } |
1328 | ||
abe529af BP |
1329 | /* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'. |
1330 | * If no mirror has been registered, this has no effect. */ | |
1331 | int | |
1332 | ofproto_mirror_unregister(struct ofproto *ofproto, void *aux) | |
064af421 | 1333 | { |
abe529af | 1334 | return ofproto_mirror_register(ofproto, aux, NULL); |
064af421 BP |
1335 | } |
1336 | ||
9d24de3b JP |
1337 | /* Retrieves statistics from mirror associated with client data pointer |
1338 | * 'aux' in 'ofproto'. Stores packet and byte counts in 'packets' and | |
1339 | * 'bytes', respectively. If a particular counters is not supported, | |
0477baa9 DF |
1340 | * the appropriate argument is set to UINT64_MAX. |
1341 | */ | |
9d24de3b JP |
1342 | int |
1343 | ofproto_mirror_get_stats(struct ofproto *ofproto, void *aux, | |
1344 | uint64_t *packets, uint64_t *bytes) | |
1345 | { | |
1346 | if (!ofproto->ofproto_class->mirror_get_stats) { | |
1347 | *packets = *bytes = UINT64_MAX; | |
1348 | return EOPNOTSUPP; | |
1349 | } | |
1350 | ||
1351 | return ofproto->ofproto_class->mirror_get_stats(ofproto, aux, | |
1352 | packets, bytes); | |
1353 | } | |
1354 | ||
abe529af BP |
1355 | /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on |
1356 | * which all packets are flooded, instead of using MAC learning. If | |
1357 | * 'flood_vlans' is NULL, then MAC learning applies to all VLANs. | |
1358 | * | |
1359 | * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL | |
1360 | * port. */ | |
1361 | int | |
1362 | ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans) | |
abdfe474 | 1363 | { |
abe529af BP |
1364 | return (ofproto->ofproto_class->set_flood_vlans |
1365 | ? ofproto->ofproto_class->set_flood_vlans(ofproto, flood_vlans) | |
1366 | : EOPNOTSUPP); | |
abdfe474 JP |
1367 | } |
1368 | ||
abe529af BP |
1369 | /* Returns true if 'aux' is a registered bundle that is currently in use as the |
1370 | * output for a mirror. */ | |
1371 | bool | |
b4affc74 | 1372 | ofproto_is_mirror_output_bundle(const struct ofproto *ofproto, void *aux) |
abe529af BP |
1373 | { |
1374 | return (ofproto->ofproto_class->is_mirror_output_bundle | |
1375 | ? ofproto->ofproto_class->is_mirror_output_bundle(ofproto, aux) | |
1376 | : false); | |
1377 | } | |
1378 | \f | |
254750ce BP |
1379 | /* Configuration of OpenFlow tables. */ |
1380 | ||
1381 | /* Returns the number of OpenFlow tables in 'ofproto'. */ | |
1382 | int | |
1383 | ofproto_get_n_tables(const struct ofproto *ofproto) | |
1384 | { | |
1385 | return ofproto->n_tables; | |
1386 | } | |
1387 | ||
adcf00ba AZ |
1388 | /* Returns the number of Controller visible OpenFlow tables |
1389 | * in 'ofproto'. This number will exclude Hidden tables. | |
1390 | * This funtion's return value should be less or equal to that of | |
1391 | * ofproto_get_n_tables() . */ | |
1392 | uint8_t | |
1393 | ofproto_get_n_visible_tables(const struct ofproto *ofproto) | |
1394 | { | |
1395 | uint8_t n = ofproto->n_tables; | |
1396 | ||
1397 | /* Count only non-hidden tables in the number of tables. (Hidden tables, | |
1398 | * if present, are always at the end.) */ | |
1399 | while(n && (ofproto->tables[n - 1].flags & OFTABLE_HIDDEN)) { | |
1400 | n--; | |
1401 | } | |
1402 | ||
1403 | return n; | |
1404 | } | |
1405 | ||
254750ce BP |
1406 | /* Configures the OpenFlow table in 'ofproto' with id 'table_id' with the |
1407 | * settings from 's'. 'table_id' must be in the range 0 through the number of | |
1408 | * OpenFlow tables in 'ofproto' minus 1, inclusive. | |
1409 | * | |
1410 | * For read-only tables, only the name may be configured. */ | |
1411 | void | |
1412 | ofproto_configure_table(struct ofproto *ofproto, int table_id, | |
1413 | const struct ofproto_table_settings *s) | |
1414 | { | |
1415 | struct oftable *table; | |
1416 | ||
cb22974d | 1417 | ovs_assert(table_id >= 0 && table_id < ofproto->n_tables); |
254750ce BP |
1418 | table = &ofproto->tables[table_id]; |
1419 | ||
1420 | oftable_set_name(table, s->name); | |
1421 | ||
1422 | if (table->flags & OFTABLE_READONLY) { | |
1423 | return; | |
1424 | } | |
1425 | ||
f358a2cb JR |
1426 | if (classifier_set_prefix_fields(&table->cls, |
1427 | s->prefix_fields, s->n_prefix_fields)) { | |
1428 | /* XXX: Trigger revalidation. */ | |
1429 | } | |
834fe5cb BP |
1430 | |
1431 | ovs_mutex_lock(&ofproto_mutex); | |
7394b8fb BP |
1432 | if (s->groups) { |
1433 | oftable_enable_eviction(table, s->groups, s->n_groups); | |
1434 | } else { | |
1435 | oftable_disable_eviction(table); | |
1436 | } | |
1437 | table->max_flows = s->max_flows; | |
6787a49f | 1438 | evict_rules_from_table(table); |
834fe5cb | 1439 | ovs_mutex_unlock(&ofproto_mutex); |
254750ce BP |
1440 | } |
1441 | \f | |
81e2083f BP |
1442 | bool |
1443 | ofproto_has_snoops(const struct ofproto *ofproto) | |
1444 | { | |
1445 | return connmgr_has_snoops(ofproto->connmgr); | |
1446 | } | |
1447 | ||
064af421 | 1448 | void |
81e2083f | 1449 | ofproto_get_snoops(const struct ofproto *ofproto, struct sset *snoops) |
064af421 | 1450 | { |
19a87e36 | 1451 | connmgr_get_snoops(ofproto->connmgr, snoops); |
064af421 BP |
1452 | } |
1453 | ||
a73fcd71 | 1454 | /* Deletes 'rule' from 'ofproto'. |
8037acb4 | 1455 | * |
b74cb5d8 BP |
1456 | * Within an ofproto implementation, this function allows an ofproto |
1457 | * implementation to destroy any rules that remain when its ->destruct() | |
1458 | * function is called. This function is not suitable for use elsewhere in an | |
1459 | * ofproto implementation. | |
1460 | * | |
b74cb5d8 | 1461 | * This function implements steps 4.4 and 4.5 in the section titled "Rule Life |
8b81d1ef | 1462 | * Cycle" in ofproto-provider.h. */ |
b74cb5d8 | 1463 | void |
8b81d1ef | 1464 | ofproto_rule_delete(struct ofproto *ofproto, struct rule *rule) |
15aaf599 | 1465 | OVS_EXCLUDED(ofproto_mutex) |
7ee20df1 | 1466 | { |
834fe5cb BP |
1467 | /* This skips the ofmonitor and flow-removed notifications because the |
1468 | * switch is being deleted and any OpenFlow channels have been or soon will | |
1469 | * be killed. */ | |
15aaf599 | 1470 | ovs_mutex_lock(&ofproto_mutex); |
39c94593 JR |
1471 | |
1472 | if (!rule->removed) { | |
1473 | /* Make sure there is no postponed removal of the rule. */ | |
1474 | ovs_assert(cls_rule_visible_in_version(&rule->cr, CLS_MAX_VERSION)); | |
1475 | ||
1476 | if (!classifier_remove(&rule->ofproto->tables[rule->table_id].cls, | |
1477 | &rule->cr)) { | |
1478 | OVS_NOT_REACHED(); | |
1479 | } | |
1480 | ofproto_rule_remove__(rule->ofproto, rule); | |
1481 | ofproto->ofproto_class->rule_delete(rule); | |
1482 | ofproto_rule_unref(rule); | |
1483 | } | |
15aaf599 | 1484 | ovs_mutex_unlock(&ofproto_mutex); |
8037acb4 BP |
1485 | } |
1486 | ||
1487 | static void | |
1488 | ofproto_flush__(struct ofproto *ofproto) | |
15aaf599 | 1489 | OVS_EXCLUDED(ofproto_mutex) |
8037acb4 | 1490 | { |
d0918789 | 1491 | struct oftable *table; |
7ee20df1 | 1492 | |
3948503a | 1493 | /* This will flush all datapath flows. */ |
7ee20df1 BP |
1494 | if (ofproto->ofproto_class->flush) { |
1495 | ofproto->ofproto_class->flush(ofproto); | |
1496 | } | |
1497 | ||
3948503a JR |
1498 | /* XXX: There is a small race window here, where new datapath flows can be |
1499 | * created by upcall handlers based on the existing flow table. We can not | |
1500 | * call ofproto class flush while holding 'ofproto_mutex' to prevent this, | |
1501 | * as then we could deadlock on syncing with the handler threads waiting on | |
1502 | * the same mutex. */ | |
1503 | ||
15aaf599 | 1504 | ovs_mutex_lock(&ofproto_mutex); |
b772ded8 | 1505 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
802f84ff | 1506 | struct rule_collection rules; |
78c8df12 | 1507 | struct rule *rule; |
7ee20df1 | 1508 | |
5c67e4af BP |
1509 | if (table->flags & OFTABLE_HIDDEN) { |
1510 | continue; | |
1511 | } | |
1512 | ||
802f84ff JR |
1513 | rule_collection_init(&rules); |
1514 | ||
de4ad4a2 | 1515 | CLS_FOR_EACH (rule, cr, &table->cls) { |
802f84ff | 1516 | rule_collection_add(&rules, rule); |
7ee20df1 | 1517 | } |
802f84ff | 1518 | delete_flows__(&rules, OFPRR_DELETE, NULL); |
7ee20df1 | 1519 | } |
3948503a JR |
1520 | /* XXX: Concurrent handler threads may insert new learned flows based on |
1521 | * learn actions of the now deleted flows right after we release | |
1522 | * 'ofproto_mutex'. */ | |
15aaf599 | 1523 | ovs_mutex_unlock(&ofproto_mutex); |
7ee20df1 BP |
1524 | } |
1525 | ||
7395c052 NZ |
1526 | static void delete_group(struct ofproto *ofproto, uint32_t group_id); |
1527 | ||
abe529af BP |
1528 | static void |
1529 | ofproto_destroy__(struct ofproto *ofproto) | |
15aaf599 | 1530 | OVS_EXCLUDED(ofproto_mutex) |
abe529af | 1531 | { |
d0918789 | 1532 | struct oftable *table; |
6c1491fb | 1533 | |
35412852 | 1534 | destroy_rule_executes(ofproto); |
5c09b672 GS |
1535 | |
1536 | guarded_list_destroy(&ofproto->rule_executes); | |
7395c052 NZ |
1537 | ovs_rwlock_destroy(&ofproto->groups_rwlock); |
1538 | hmap_destroy(&ofproto->groups); | |
1539 | ||
abe529af BP |
1540 | hmap_remove(&all_ofprotos, &ofproto->hmap_node); |
1541 | free(ofproto->name); | |
955a7127 | 1542 | free(ofproto->type); |
abe529af BP |
1543 | free(ofproto->mfr_desc); |
1544 | free(ofproto->hw_desc); | |
1545 | free(ofproto->sw_desc); | |
1546 | free(ofproto->serial_desc); | |
1547 | free(ofproto->dp_desc); | |
abe529af | 1548 | hmap_destroy(&ofproto->ports); |
fdcea803 | 1549 | hmap_destroy(&ofproto->ofport_usage); |
abe529af | 1550 | shash_destroy(&ofproto->port_by_name); |
e1b1d06a | 1551 | simap_destroy(&ofproto->ofp_requests); |
6c1491fb | 1552 | |
b772ded8 | 1553 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
d0918789 | 1554 | oftable_destroy(table); |
6c1491fb BP |
1555 | } |
1556 | free(ofproto->tables); | |
fa066f01 | 1557 | |
1406c79b BP |
1558 | ovs_assert(hindex_is_empty(&ofproto->cookies)); |
1559 | hindex_destroy(&ofproto->cookies); | |
1560 | ||
35f48b8b BP |
1561 | ovs_assert(hmap_is_empty(&ofproto->learned_cookies)); |
1562 | hmap_destroy(&ofproto->learned_cookies); | |
1563 | ||
52a90c29 BP |
1564 | free(ofproto->vlan_bitmap); |
1565 | ||
abe529af BP |
1566 | ofproto->ofproto_class->dealloc(ofproto); |
1567 | } | |
fa066f01 | 1568 | |
39c94593 JR |
1569 | /* Destroying rules is doubly deferred, must have 'ofproto' around for them. |
1570 | * - 1st we defer the removal of the rules from the classifier | |
1571 | * - 2nd we defer the actual destruction of the rules. */ | |
1572 | static void | |
1573 | ofproto_destroy_defer__(struct ofproto *ofproto) | |
1574 | OVS_EXCLUDED(ofproto_mutex) | |
1575 | { | |
1576 | ovsrcu_postpone(ofproto_destroy__, ofproto); | |
1577 | } | |
1578 | ||
064af421 BP |
1579 | void |
1580 | ofproto_destroy(struct ofproto *p) | |
15aaf599 | 1581 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 1582 | { |
ca0f572c | 1583 | struct ofport *ofport, *next_ofport; |
fdcea803 | 1584 | struct ofport_usage *usage, *next_usage; |
064af421 BP |
1585 | |
1586 | if (!p) { | |
1587 | return; | |
1588 | } | |
1589 | ||
717de9ff JR |
1590 | if (p->meters) { |
1591 | meter_delete(p, 1, p->meter_features.max_meters); | |
1592 | p->meter_features.max_meters = 0; | |
1593 | free(p->meters); | |
1594 | p->meters = NULL; | |
1595 | } | |
1596 | ||
7ee20df1 | 1597 | ofproto_flush__(p); |
4e8e4213 | 1598 | HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) { |
abe529af | 1599 | ofport_destroy(ofport); |
064af421 | 1600 | } |
064af421 | 1601 | |
fdcea803 GS |
1602 | HMAP_FOR_EACH_SAFE (usage, next_usage, hmap_node, &p->ofport_usage) { |
1603 | hmap_remove(&p->ofport_usage, &usage->hmap_node); | |
1604 | free(usage); | |
1605 | } | |
1606 | ||
abe529af | 1607 | p->ofproto_class->destruct(p); |
58f19539 DDP |
1608 | |
1609 | /* We should not postpone this because it involves deleting a listening | |
1610 | * socket which we may want to reopen soon. 'connmgr' should not be used | |
1611 | * by other threads */ | |
1612 | connmgr_destroy(p->connmgr); | |
1613 | ||
f416c8d6 | 1614 | /* Destroying rules is deferred, must have 'ofproto' around for them. */ |
39c94593 | 1615 | ovsrcu_postpone(ofproto_destroy_defer__, p); |
064af421 BP |
1616 | } |
1617 | ||
abe529af BP |
1618 | /* Destroys the datapath with the respective 'name' and 'type'. With the Linux |
1619 | * kernel datapath, for example, this destroys the datapath in the kernel, and | |
1620 | * with the netdev-based datapath, it tears down the data structures that | |
1621 | * represent the datapath. | |
1622 | * | |
1623 | * The datapath should not be currently open as an ofproto. */ | |
064af421 | 1624 | int |
abe529af | 1625 | ofproto_delete(const char *name, const char *type) |
064af421 | 1626 | { |
abe529af BP |
1627 | const struct ofproto_class *class = ofproto_class_find__(type); |
1628 | return (!class ? EAFNOSUPPORT | |
1629 | : !class->del ? EACCES | |
1630 | : class->del(type, name)); | |
064af421 BP |
1631 | } |
1632 | ||
e9e28be3 BP |
1633 | static void |
1634 | process_port_change(struct ofproto *ofproto, int error, char *devname) | |
1635 | { | |
1636 | if (error == ENOBUFS) { | |
1637 | reinit_ports(ofproto); | |
1638 | } else if (!error) { | |
1639 | update_port(ofproto, devname); | |
1640 | free(devname); | |
1641 | } | |
1642 | } | |
1643 | ||
11a574a7 JP |
1644 | int |
1645 | ofproto_type_run(const char *datapath_type) | |
1646 | { | |
1647 | const struct ofproto_class *class; | |
1648 | int error; | |
1649 | ||
1650 | datapath_type = ofproto_normalize_type(datapath_type); | |
1651 | class = ofproto_class_find__(datapath_type); | |
1652 | ||
1653 | error = class->type_run ? class->type_run(datapath_type) : 0; | |
1654 | if (error && error != EAGAIN) { | |
1655 | VLOG_ERR_RL(&rl, "%s: type_run failed (%s)", | |
10a89ef0 | 1656 | datapath_type, ovs_strerror(error)); |
11a574a7 JP |
1657 | } |
1658 | return error; | |
1659 | } | |
1660 | ||
11a574a7 JP |
1661 | void |
1662 | ofproto_type_wait(const char *datapath_type) | |
1663 | { | |
1664 | const struct ofproto_class *class; | |
1665 | ||
1666 | datapath_type = ofproto_normalize_type(datapath_type); | |
1667 | class = ofproto_class_find__(datapath_type); | |
1668 | ||
1669 | if (class->type_wait) { | |
1670 | class->type_wait(datapath_type); | |
1671 | } | |
1672 | } | |
1673 | ||
064af421 | 1674 | int |
abe529af | 1675 | ofproto_run(struct ofproto *p) |
064af421 | 1676 | { |
064af421 | 1677 | int error; |
da4a6191 | 1678 | uint64_t new_seq; |
064af421 | 1679 | |
abe529af | 1680 | error = p->ofproto_class->run(p); |
5fcc0d00 | 1681 | if (error && error != EAGAIN) { |
10a89ef0 | 1682 | VLOG_ERR_RL(&rl, "%s: run failed (%s)", p->name, ovs_strerror(error)); |
149f577a JG |
1683 | } |
1684 | ||
35412852 BP |
1685 | run_rule_executes(p); |
1686 | ||
448c2fa8 EJ |
1687 | /* Restore the eviction group heap invariant occasionally. */ |
1688 | if (p->eviction_group_timer < time_msec()) { | |
1689 | size_t i; | |
1690 | ||
1691 | p->eviction_group_timer = time_msec() + 1000; | |
1692 | ||
1693 | for (i = 0; i < p->n_tables; i++) { | |
1694 | struct oftable *table = &p->tables[i]; | |
1695 | struct eviction_group *evg; | |
448c2fa8 EJ |
1696 | struct rule *rule; |
1697 | ||
1698 | if (!table->eviction_fields) { | |
1699 | continue; | |
1700 | } | |
1701 | ||
d79e3d70 | 1702 | if (table->n_flows > 100000) { |
1a9bb326 EJ |
1703 | static struct vlog_rate_limit count_rl = |
1704 | VLOG_RATE_LIMIT_INIT(1, 1); | |
1705 | VLOG_WARN_RL(&count_rl, "Table %"PRIuSIZE" has an excessive" | |
d79e3d70 | 1706 | " number of rules: %d", i, table->n_flows); |
1a9bb326 EJ |
1707 | } |
1708 | ||
15aaf599 | 1709 | ovs_mutex_lock(&ofproto_mutex); |
5f0476ce | 1710 | CLS_FOR_EACH (rule, cr, &table->cls) { |
6d56c1f1 K |
1711 | if (rule->idle_timeout || rule->hard_timeout) { |
1712 | if (!rule->eviction_group) { | |
1713 | eviction_group_add_rule(rule); | |
1714 | } else { | |
1715 | heap_raw_change(&rule->evg_node, | |
1716 | rule_eviction_priority(p, rule)); | |
1717 | } | |
448c2fa8 EJ |
1718 | } |
1719 | } | |
6d56c1f1 K |
1720 | |
1721 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { | |
1722 | heap_rebuild(&evg->rules); | |
1723 | } | |
15aaf599 | 1724 | ovs_mutex_unlock(&ofproto_mutex); |
448c2fa8 EJ |
1725 | } |
1726 | } | |
1727 | ||
5bf0e941 | 1728 | if (p->ofproto_class->port_poll) { |
7436ed80 BP |
1729 | char *devname; |
1730 | ||
5bf0e941 BP |
1731 | while ((error = p->ofproto_class->port_poll(p, &devname)) != EAGAIN) { |
1732 | process_port_change(p, error, devname); | |
064af421 | 1733 | } |
e9e28be3 | 1734 | } |
031d8bff | 1735 | |
da4a6191 JS |
1736 | new_seq = seq_read(connectivity_seq_get()); |
1737 | if (new_seq != p->change_seq) { | |
1738 | struct sset devnames; | |
1739 | const char *devname; | |
1740 | struct ofport *ofport; | |
1741 | ||
1742 | /* Update OpenFlow port status for any port whose netdev has changed. | |
1743 | * | |
1744 | * Refreshing a given 'ofport' can cause an arbitrary ofport to be | |
1745 | * destroyed, so it's not safe to update ports directly from the | |
1746 | * HMAP_FOR_EACH loop, or even to use HMAP_FOR_EACH_SAFE. Instead, we | |
1747 | * need this two-phase approach. */ | |
1748 | sset_init(&devnames); | |
1749 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
61501798 AW |
1750 | uint64_t port_change_seq; |
1751 | ||
1752 | port_change_seq = netdev_get_change_seq(ofport->netdev); | |
1753 | if (ofport->change_seq != port_change_seq) { | |
1754 | ofport->change_seq = port_change_seq; | |
1755 | sset_add(&devnames, netdev_get_name(ofport->netdev)); | |
1756 | } | |
031d8bff | 1757 | } |
da4a6191 JS |
1758 | SSET_FOR_EACH (devname, &devnames) { |
1759 | update_port(p, devname); | |
1760 | } | |
1761 | sset_destroy(&devnames); | |
1762 | ||
1763 | p->change_seq = new_seq; | |
064af421 BP |
1764 | } |
1765 | ||
834fe5cb | 1766 | connmgr_run(p->connmgr, handle_openflow); |
064af421 | 1767 | |
5fcc0d00 BP |
1768 | return error; |
1769 | } | |
1770 | ||
064af421 BP |
1771 | void |
1772 | ofproto_wait(struct ofproto *p) | |
1773 | { | |
abe529af | 1774 | p->ofproto_class->wait(p); |
5bf0e941 BP |
1775 | if (p->ofproto_class->port_poll_wait) { |
1776 | p->ofproto_class->port_poll_wait(p); | |
e7934396 | 1777 | } |
da4a6191 | 1778 | seq_wait(connectivity_seq_get(), p->change_seq); |
834fe5cb | 1779 | connmgr_wait(p->connmgr); |
064af421 BP |
1780 | } |
1781 | ||
064af421 BP |
1782 | bool |
1783 | ofproto_is_alive(const struct ofproto *p) | |
1784 | { | |
19a87e36 | 1785 | return connmgr_has_controllers(p->connmgr); |
064af421 BP |
1786 | } |
1787 | ||
0d085684 BP |
1788 | /* Adds some memory usage statistics for 'ofproto' into 'usage', for use with |
1789 | * memory_report(). */ | |
1790 | void | |
1791 | ofproto_get_memory_usage(const struct ofproto *ofproto, struct simap *usage) | |
1792 | { | |
1793 | const struct oftable *table; | |
1794 | unsigned int n_rules; | |
1795 | ||
1796 | simap_increase(usage, "ports", hmap_count(&ofproto->ports)); | |
15aaf599 | 1797 | |
0d085684 BP |
1798 | n_rules = 0; |
1799 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
d79e3d70 | 1800 | n_rules += table->n_flows; |
0d085684 BP |
1801 | } |
1802 | simap_increase(usage, "rules", n_rules); | |
1803 | ||
1804 | if (ofproto->ofproto_class->get_memory_usage) { | |
1805 | ofproto->ofproto_class->get_memory_usage(ofproto, usage); | |
1806 | } | |
1807 | ||
1808 | connmgr_get_memory_usage(ofproto->connmgr, usage); | |
1809 | } | |
1810 | ||
1c030aa5 EJ |
1811 | void |
1812 | ofproto_type_get_memory_usage(const char *datapath_type, struct simap *usage) | |
1813 | { | |
1814 | const struct ofproto_class *class; | |
1815 | ||
1816 | datapath_type = ofproto_normalize_type(datapath_type); | |
1817 | class = ofproto_class_find__(datapath_type); | |
1818 | ||
1819 | if (class && class->type_get_memory_usage) { | |
1820 | class->type_get_memory_usage(datapath_type, usage); | |
1821 | } | |
1822 | } | |
1823 | ||
bffc0589 | 1824 | void |
2cdcb898 | 1825 | ofproto_get_ofproto_controller_info(const struct ofproto *ofproto, |
bffc0589 AE |
1826 | struct shash *info) |
1827 | { | |
19a87e36 | 1828 | connmgr_get_controller_info(ofproto->connmgr, info); |
bffc0589 AE |
1829 | } |
1830 | ||
1831 | void | |
1832 | ofproto_free_ofproto_controller_info(struct shash *info) | |
1833 | { | |
72ba2ed3 | 1834 | connmgr_free_controller_info(info); |
bffc0589 AE |
1835 | } |
1836 | ||
b5827b24 BP |
1837 | /* Makes a deep copy of 'old' into 'port'. */ |
1838 | void | |
1839 | ofproto_port_clone(struct ofproto_port *port, const struct ofproto_port *old) | |
1840 | { | |
1841 | port->name = xstrdup(old->name); | |
1842 | port->type = xstrdup(old->type); | |
1843 | port->ofp_port = old->ofp_port; | |
1844 | } | |
1845 | ||
1846 | /* Frees memory allocated to members of 'ofproto_port'. | |
3a6ccc8c | 1847 | * |
b5827b24 BP |
1848 | * Do not call this function on an ofproto_port obtained from |
1849 | * ofproto_port_dump_next(): that function retains ownership of the data in the | |
1850 | * ofproto_port. */ | |
1851 | void | |
1852 | ofproto_port_destroy(struct ofproto_port *ofproto_port) | |
1853 | { | |
1854 | free(ofproto_port->name); | |
1855 | free(ofproto_port->type); | |
1856 | } | |
1857 | ||
b5827b24 | 1858 | /* Initializes 'dump' to begin dumping the ports in an ofproto. |
3a6ccc8c | 1859 | * |
b5827b24 BP |
1860 | * This function provides no status indication. An error status for the entire |
1861 | * dump operation is provided when it is completed by calling | |
1862 | * ofproto_port_dump_done(). | |
1863 | */ | |
1864 | void | |
1865 | ofproto_port_dump_start(struct ofproto_port_dump *dump, | |
1866 | const struct ofproto *ofproto) | |
1867 | { | |
abe529af BP |
1868 | dump->ofproto = ofproto; |
1869 | dump->error = ofproto->ofproto_class->port_dump_start(ofproto, | |
1870 | &dump->state); | |
b5827b24 BP |
1871 | } |
1872 | ||
1873 | /* Attempts to retrieve another port from 'dump', which must have been created | |
1874 | * with ofproto_port_dump_start(). On success, stores a new ofproto_port into | |
1875 | * 'port' and returns true. On failure, returns false. | |
1876 | * | |
1877 | * Failure might indicate an actual error or merely that the last port has been | |
1878 | * dumped. An error status for the entire dump operation is provided when it | |
1879 | * is completed by calling ofproto_port_dump_done(). | |
1880 | * | |
1881 | * The ofproto owns the data stored in 'port'. It will remain valid until at | |
1882 | * least the next time 'dump' is passed to ofproto_port_dump_next() or | |
1883 | * ofproto_port_dump_done(). */ | |
1884 | bool | |
1885 | ofproto_port_dump_next(struct ofproto_port_dump *dump, | |
1886 | struct ofproto_port *port) | |
1887 | { | |
abe529af BP |
1888 | const struct ofproto *ofproto = dump->ofproto; |
1889 | ||
1890 | if (dump->error) { | |
1891 | return false; | |
1892 | } | |
b5827b24 | 1893 | |
abe529af BP |
1894 | dump->error = ofproto->ofproto_class->port_dump_next(ofproto, dump->state, |
1895 | port); | |
1896 | if (dump->error) { | |
1897 | ofproto->ofproto_class->port_dump_done(ofproto, dump->state); | |
1898 | return false; | |
b5827b24 | 1899 | } |
abe529af | 1900 | return true; |
b5827b24 BP |
1901 | } |
1902 | ||
1903 | /* Completes port table dump operation 'dump', which must have been created | |
1904 | * with ofproto_port_dump_start(). Returns 0 if the dump operation was | |
1905 | * error-free, otherwise a positive errno value describing the problem. */ | |
3a6ccc8c | 1906 | int |
b5827b24 | 1907 | ofproto_port_dump_done(struct ofproto_port_dump *dump) |
3a6ccc8c | 1908 | { |
abe529af BP |
1909 | const struct ofproto *ofproto = dump->ofproto; |
1910 | if (!dump->error) { | |
1911 | dump->error = ofproto->ofproto_class->port_dump_done(ofproto, | |
1912 | dump->state); | |
1913 | } | |
1914 | return dump->error == EOF ? 0 : dump->error; | |
b5827b24 BP |
1915 | } |
1916 | ||
0aeaabc8 JP |
1917 | /* Returns the type to pass to netdev_open() when a datapath of type |
1918 | * 'datapath_type' has a port of type 'port_type', for a few special | |
1919 | * cases when a netdev type differs from a port type. For example, when | |
1920 | * using the userspace datapath, a port of type "internal" needs to be | |
1921 | * opened as "tap". | |
1922 | * | |
1923 | * Returns either 'type' itself or a string literal, which must not be | |
1924 | * freed. */ | |
1925 | const char * | |
1926 | ofproto_port_open_type(const char *datapath_type, const char *port_type) | |
1927 | { | |
1928 | const struct ofproto_class *class; | |
1929 | ||
1930 | datapath_type = ofproto_normalize_type(datapath_type); | |
1931 | class = ofproto_class_find__(datapath_type); | |
1932 | if (!class) { | |
1933 | return port_type; | |
1934 | } | |
1935 | ||
1936 | return (class->port_open_type | |
1937 | ? class->port_open_type(datapath_type, port_type) | |
1938 | : port_type); | |
1939 | } | |
1940 | ||
81816a5f JP |
1941 | /* Attempts to add 'netdev' as a port on 'ofproto'. If 'ofp_portp' is |
1942 | * non-null and '*ofp_portp' is not OFPP_NONE, attempts to use that as | |
1943 | * the port's OpenFlow port number. | |
1944 | * | |
1945 | * If successful, returns 0 and sets '*ofp_portp' to the new port's | |
1946 | * OpenFlow port number (if 'ofp_portp' is non-null). On failure, | |
1947 | * returns a positive errno value and sets '*ofp_portp' to OFPP_NONE (if | |
1948 | * 'ofp_portp' is non-null). */ | |
b5827b24 BP |
1949 | int |
1950 | ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev, | |
4e022ec0 | 1951 | ofp_port_t *ofp_portp) |
b5827b24 | 1952 | { |
4e022ec0 | 1953 | ofp_port_t ofp_port = ofp_portp ? *ofp_portp : OFPP_NONE; |
3a6ccc8c BP |
1954 | int error; |
1955 | ||
e1b1d06a | 1956 | error = ofproto->ofproto_class->port_add(ofproto, netdev); |
1fa24dea | 1957 | if (!error) { |
e1b1d06a JP |
1958 | const char *netdev_name = netdev_get_name(netdev); |
1959 | ||
4e022ec0 AW |
1960 | simap_put(&ofproto->ofp_requests, netdev_name, |
1961 | ofp_to_u16(ofp_port)); | |
e1b1d06a | 1962 | update_port(ofproto, netdev_name); |
1fa24dea | 1963 | } |
b5827b24 | 1964 | if (ofp_portp) { |
17f69db5 BP |
1965 | *ofp_portp = OFPP_NONE; |
1966 | if (!error) { | |
1967 | struct ofproto_port ofproto_port; | |
1968 | ||
1969 | error = ofproto_port_query_by_name(ofproto, | |
1970 | netdev_get_name(netdev), | |
1971 | &ofproto_port); | |
1972 | if (!error) { | |
1973 | *ofp_portp = ofproto_port.ofp_port; | |
1974 | ofproto_port_destroy(&ofproto_port); | |
1975 | } | |
1976 | } | |
3a6ccc8c BP |
1977 | } |
1978 | return error; | |
1979 | } | |
1980 | ||
b5827b24 BP |
1981 | /* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and |
1982 | * initializes '*port' appropriately; on failure, returns a positive errno | |
1983 | * value. | |
1984 | * | |
abe529af | 1985 | * The caller owns the data in 'ofproto_port' and must free it with |
b5827b24 BP |
1986 | * ofproto_port_destroy() when it is no longer needed. */ |
1987 | int | |
1988 | ofproto_port_query_by_name(const struct ofproto *ofproto, const char *devname, | |
1989 | struct ofproto_port *port) | |
a4e2e1f2 | 1990 | { |
b5827b24 BP |
1991 | int error; |
1992 | ||
abe529af BP |
1993 | error = ofproto->ofproto_class->port_query_by_name(ofproto, devname, port); |
1994 | if (error) { | |
1995 | memset(port, 0, sizeof *port); | |
b5827b24 BP |
1996 | } |
1997 | return error; | |
a4e2e1f2 EJ |
1998 | } |
1999 | ||
b5827b24 | 2000 | /* Deletes port number 'ofp_port' from the datapath for 'ofproto'. |
3a6ccc8c | 2001 | * Returns 0 if successful, otherwise a positive errno. */ |
064af421 | 2002 | int |
4e022ec0 | 2003 | ofproto_port_del(struct ofproto *ofproto, ofp_port_t ofp_port) |
064af421 | 2004 | { |
abe529af | 2005 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1264ec95 | 2006 | const char *name = ofport ? netdev_get_name(ofport->netdev) : "<unknown>"; |
e1b1d06a | 2007 | struct simap_node *ofp_request_node; |
3cf10406 | 2008 | int error; |
cdee00fd | 2009 | |
e1b1d06a JP |
2010 | ofp_request_node = simap_find(&ofproto->ofp_requests, name); |
2011 | if (ofp_request_node) { | |
2012 | simap_delete(&ofproto->ofp_requests, ofp_request_node); | |
2013 | } | |
2014 | ||
abe529af | 2015 | error = ofproto->ofproto_class->port_del(ofproto, ofp_port); |
892815f5 | 2016 | if (!error && ofport) { |
1264ec95 BP |
2017 | /* 'name' is the netdev's name and update_port() is going to close the |
2018 | * netdev. Just in case update_port() refers to 'name' after it | |
3a6ccc8c BP |
2019 | * destroys 'ofport', make a copy of it around the update_port() |
2020 | * call. */ | |
2021 | char *devname = xstrdup(name); | |
2022 | update_port(ofproto, devname); | |
2023 | free(devname); | |
3cf10406 BP |
2024 | } |
2025 | return error; | |
064af421 BP |
2026 | } |
2027 | ||
276f6518 SH |
2028 | static void |
2029 | flow_mod_init(struct ofputil_flow_mod *fm, | |
eb391b76 | 2030 | const struct match *match, int priority, |
276f6518 SH |
2031 | const struct ofpact *ofpacts, size_t ofpacts_len, |
2032 | enum ofp_flow_mod_command command) | |
2033 | { | |
2034 | memset(fm, 0, sizeof *fm); | |
2035 | fm->match = *match; | |
2036 | fm->priority = priority; | |
2037 | fm->cookie = 0; | |
2038 | fm->new_cookie = 0; | |
2039 | fm->modify_cookie = false; | |
2040 | fm->table_id = 0; | |
2041 | fm->command = command; | |
2042 | fm->idle_timeout = 0; | |
2043 | fm->hard_timeout = 0; | |
ca26eb44 | 2044 | fm->importance = 0; |
276f6518 SH |
2045 | fm->buffer_id = UINT32_MAX; |
2046 | fm->out_port = OFPP_ANY; | |
2047 | fm->out_group = OFPG_ANY; | |
2048 | fm->flags = 0; | |
2049 | fm->ofpacts = CONST_CAST(struct ofpact *, ofpacts); | |
2050 | fm->ofpacts_len = ofpacts_len; | |
cc40d06b | 2051 | fm->delete_reason = OFPRR_DELETE; |
276f6518 SH |
2052 | } |
2053 | ||
97f63e57 BP |
2054 | static int |
2055 | simple_flow_mod(struct ofproto *ofproto, | |
eb391b76 | 2056 | const struct match *match, int priority, |
97f63e57 BP |
2057 | const struct ofpact *ofpacts, size_t ofpacts_len, |
2058 | enum ofp_flow_mod_command command) | |
2059 | { | |
2060 | struct ofputil_flow_mod fm; | |
2061 | ||
276f6518 | 2062 | flow_mod_init(&fm, match, priority, ofpacts, ofpacts_len, command); |
15aaf599 | 2063 | |
baae3d02 | 2064 | return handle_flow_mod__(ofproto, &fm, NULL); |
97f63e57 BP |
2065 | } |
2066 | ||
6c1491fb | 2067 | /* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and |
fa8b054f BP |
2068 | * performs the 'n_actions' actions in 'actions'. The new flow will not |
2069 | * timeout. | |
2070 | * | |
2071 | * If cls_rule->priority is in the range of priorities supported by OpenFlow | |
2072 | * (0...65535, inclusive) then the flow will be visible to OpenFlow | |
2073 | * controllers; otherwise, it will be hidden. | |
2074 | * | |
f25d0cf3 | 2075 | * The caller retains ownership of 'cls_rule' and 'ofpacts'. |
6c1491fb BP |
2076 | * |
2077 | * This is a helper function for in-band control and fail-open. */ | |
064af421 | 2078 | void |
81a76618 | 2079 | ofproto_add_flow(struct ofproto *ofproto, const struct match *match, |
eb391b76 | 2080 | int priority, |
f25d0cf3 | 2081 | const struct ofpact *ofpacts, size_t ofpacts_len) |
15aaf599 | 2082 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 2083 | { |
7ee20df1 | 2084 | const struct rule *rule; |
6f00e29b | 2085 | bool must_add; |
7ee20df1 | 2086 | |
97f63e57 BP |
2087 | /* First do a cheap check whether the rule we're looking for already exists |
2088 | * with the actions that we want. If it does, then we're done. */ | |
81a76618 | 2089 | rule = rule_from_cls_rule(classifier_find_match_exactly( |
2b7b1427 JR |
2090 | &ofproto->tables[0].cls, match, priority, |
2091 | CLS_MAX_VERSION)); | |
6f00e29b | 2092 | if (rule) { |
dc723c44 | 2093 | const struct rule_actions *actions = rule_get_actions(rule); |
06a0f3e2 | 2094 | must_add = !ofpacts_equal(actions->ofpacts, actions->ofpacts_len, |
6f00e29b | 2095 | ofpacts, ofpacts_len); |
6f00e29b BP |
2096 | } else { |
2097 | must_add = true; | |
2098 | } | |
97f63e57 BP |
2099 | |
2100 | /* If there's no such rule or the rule doesn't have the actions we want, | |
2101 | * fall back to a executing a full flow mod. We can't optimize this at | |
2102 | * all because we didn't take enough locks above to ensure that the flow | |
2103 | * table didn't already change beneath us. */ | |
6f00e29b | 2104 | if (must_add) { |
97f63e57 BP |
2105 | simple_flow_mod(ofproto, match, priority, ofpacts, ofpacts_len, |
2106 | OFPFC_MODIFY_STRICT); | |
7ee20df1 | 2107 | } |
064af421 BP |
2108 | } |
2109 | ||
d51c8b71 JR |
2110 | /* Executes the flow modification specified in 'fm'. Returns 0 on success, or |
2111 | * an OFPERR_* OpenFlow error code on failure. | |
75a75043 | 2112 | * |
1b63b91e BP |
2113 | * This is a helper function for in-band control and fail-open and the "learn" |
2114 | * action. */ | |
d51c8b71 | 2115 | enum ofperr |
e3b56933 | 2116 | ofproto_flow_mod(struct ofproto *ofproto, struct ofputil_flow_mod *fm) |
15aaf599 | 2117 | OVS_EXCLUDED(ofproto_mutex) |
75a75043 | 2118 | { |
b90d6ee5 JR |
2119 | /* Optimize for the most common case of a repeated learn action. |
2120 | * If an identical flow already exists we only need to update its | |
2121 | * 'modified' time. */ | |
2122 | if (fm->command == OFPFC_MODIFY_STRICT && fm->table_id != OFPTT_ALL | |
2123 | && !(fm->flags & OFPUTIL_FF_RESET_COUNTS)) { | |
2124 | struct oftable *table = &ofproto->tables[fm->table_id]; | |
b90d6ee5 JR |
2125 | struct rule *rule; |
2126 | bool done = false; | |
2127 | ||
2b7b1427 | 2128 | rule = rule_from_cls_rule(classifier_find_match_exactly( |
39c94593 JR |
2129 | &table->cls, &fm->match, fm->priority, |
2130 | CLS_MAX_VERSION)); | |
b90d6ee5 JR |
2131 | if (rule) { |
2132 | /* Reading many of the rule fields and writing on 'modified' | |
2133 | * requires the rule->mutex. Also, rule->actions may change | |
2134 | * if rule->mutex is not held. */ | |
06a0f3e2 BP |
2135 | const struct rule_actions *actions; |
2136 | ||
b90d6ee5 | 2137 | ovs_mutex_lock(&rule->mutex); |
06a0f3e2 | 2138 | actions = rule_get_actions(rule); |
b90d6ee5 JR |
2139 | if (rule->idle_timeout == fm->idle_timeout |
2140 | && rule->hard_timeout == fm->hard_timeout | |
ca26eb44 | 2141 | && rule->importance == fm->importance |
b90d6ee5 JR |
2142 | && rule->flags == (fm->flags & OFPUTIL_FF_STATE) |
2143 | && (!fm->modify_cookie || (fm->new_cookie == rule->flow_cookie)) | |
2144 | && ofpacts_equal(fm->ofpacts, fm->ofpacts_len, | |
06a0f3e2 | 2145 | actions->ofpacts, actions->ofpacts_len)) { |
b90d6ee5 JR |
2146 | /* Rule already exists and need not change, only update the |
2147 | modified timestamp. */ | |
2148 | rule->modified = time_msec(); | |
2149 | done = true; | |
2150 | } | |
2151 | ovs_mutex_unlock(&rule->mutex); | |
2152 | } | |
b90d6ee5 JR |
2153 | |
2154 | if (done) { | |
2155 | return 0; | |
2156 | } | |
2157 | } | |
2158 | ||
baae3d02 | 2159 | return handle_flow_mod__(ofproto, fm, NULL); |
75a75043 BP |
2160 | } |
2161 | ||
6c1491fb BP |
2162 | /* Searches for a rule with matching criteria exactly equal to 'target' in |
2163 | * ofproto's table 0 and, if it finds one, deletes it. | |
2164 | * | |
2165 | * This is a helper function for in-band control and fail-open. */ | |
b20f4073 | 2166 | void |
81a76618 | 2167 | ofproto_delete_flow(struct ofproto *ofproto, |
eb391b76 | 2168 | const struct match *target, int priority) |
15aaf599 | 2169 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 2170 | { |
8037acb4 | 2171 | struct classifier *cls = &ofproto->tables[0].cls; |
064af421 BP |
2172 | struct rule *rule; |
2173 | ||
97f63e57 BP |
2174 | /* First do a cheap check whether the rule we're looking for has already |
2175 | * been deleted. If so, then we're done. */ | |
39c94593 JR |
2176 | rule = rule_from_cls_rule(classifier_find_match_exactly( |
2177 | cls, target, priority, CLS_MAX_VERSION)); | |
834fe5cb BP |
2178 | if (!rule) { |
2179 | return; | |
bcf84111 | 2180 | } |
834fe5cb BP |
2181 | |
2182 | /* Execute a flow mod. We can't optimize this at all because we didn't | |
2183 | * take enough locks above to ensure that the flow table didn't already | |
2184 | * change beneath us. */ | |
2185 | simple_flow_mod(ofproto, target, priority, NULL, 0, OFPFC_DELETE_STRICT); | |
142e1f5c BP |
2186 | } |
2187 | ||
834fe5cb BP |
2188 | /* Delete all of the flows from all of ofproto's flow tables, then reintroduce |
2189 | * the flows required by in-band control and fail-open. */ | |
142e1f5c BP |
2190 | void |
2191 | ofproto_flush_flows(struct ofproto *ofproto) | |
2192 | { | |
7ee20df1 | 2193 | COVERAGE_INC(ofproto_flush); |
834fe5cb BP |
2194 | ofproto_flush__(ofproto); |
2195 | connmgr_flushed(ofproto->connmgr); | |
064af421 BP |
2196 | } |
2197 | \f | |
2198 | static void | |
2199 | reinit_ports(struct ofproto *p) | |
2200 | { | |
abe529af | 2201 | struct ofproto_port_dump dump; |
b3c01ed3 | 2202 | struct sset devnames; |
064af421 | 2203 | struct ofport *ofport; |
abe529af | 2204 | struct ofproto_port ofproto_port; |
b3c01ed3 | 2205 | const char *devname; |
064af421 | 2206 | |
898bf89d JP |
2207 | COVERAGE_INC(ofproto_reinit_ports); |
2208 | ||
b3c01ed3 | 2209 | sset_init(&devnames); |
4e8e4213 | 2210 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { |
1264ec95 | 2211 | sset_add(&devnames, netdev_get_name(ofport->netdev)); |
064af421 | 2212 | } |
abe529af BP |
2213 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { |
2214 | sset_add(&devnames, ofproto_port.name); | |
064af421 | 2215 | } |
064af421 | 2216 | |
b3c01ed3 BP |
2217 | SSET_FOR_EACH (devname, &devnames) { |
2218 | update_port(p, devname); | |
064af421 | 2219 | } |
b3c01ed3 | 2220 | sset_destroy(&devnames); |
064af421 BP |
2221 | } |
2222 | ||
4e022ec0 | 2223 | static ofp_port_t |
e1b1d06a JP |
2224 | alloc_ofp_port(struct ofproto *ofproto, const char *netdev_name) |
2225 | { | |
4e022ec0 | 2226 | uint16_t port_idx; |
e1b1d06a | 2227 | |
4e022ec0 | 2228 | port_idx = simap_get(&ofproto->ofp_requests, netdev_name); |
430dbb14 | 2229 | port_idx = port_idx ? port_idx : UINT16_MAX; |
4e022ec0 | 2230 | |
430dbb14 | 2231 | if (port_idx >= ofproto->max_ports |
fdcea803 GS |
2232 | || ofport_get_usage(ofproto, u16_to_ofp(port_idx)) == LLONG_MAX) { |
2233 | uint16_t lru_ofport = 0, end_port_no = ofproto->alloc_port_no; | |
2234 | long long int last_used_at, lru = LLONG_MAX; | |
e1b1d06a | 2235 | |
e1b1d06a JP |
2236 | /* Search for a free OpenFlow port number. We try not to |
2237 | * immediately reuse them to prevent problems due to old | |
484c8355 BP |
2238 | * flows. |
2239 | * | |
2240 | * We limit the automatically assigned port numbers to the lower half | |
2241 | * of the port range, to reserve the upper half for assignment by | |
2242 | * controllers. */ | |
6033d9d9 | 2243 | for (;;) { |
484c8355 | 2244 | if (++ofproto->alloc_port_no >= MIN(ofproto->max_ports, 32768)) { |
fdcea803 | 2245 | ofproto->alloc_port_no = 1; |
6033d9d9 | 2246 | } |
fdcea803 GS |
2247 | last_used_at = ofport_get_usage(ofproto, |
2248 | u16_to_ofp(ofproto->alloc_port_no)); | |
2249 | if (!last_used_at) { | |
430dbb14 | 2250 | port_idx = ofproto->alloc_port_no; |
6033d9d9 | 2251 | break; |
865b26a4 GS |
2252 | } else if ( last_used_at < time_msec() - 60*60*1000) { |
2253 | /* If the port with ofport 'ofproto->alloc_port_no' was deleted | |
2254 | * more than an hour ago, consider it usable. */ | |
2255 | ofport_remove_usage(ofproto, | |
2256 | u16_to_ofp(ofproto->alloc_port_no)); | |
2257 | port_idx = ofproto->alloc_port_no; | |
2258 | break; | |
fdcea803 GS |
2259 | } else if (last_used_at < lru) { |
2260 | lru = last_used_at; | |
2261 | lru_ofport = ofproto->alloc_port_no; | |
e1b1d06a | 2262 | } |
fdcea803 | 2263 | |
430dbb14 | 2264 | if (ofproto->alloc_port_no == end_port_no) { |
fdcea803 GS |
2265 | if (lru_ofport) { |
2266 | port_idx = lru_ofport; | |
2267 | break; | |
2268 | } | |
6033d9d9 | 2269 | return OFPP_NONE; |
e1b1d06a JP |
2270 | } |
2271 | } | |
2272 | } | |
fdcea803 | 2273 | ofport_set_usage(ofproto, u16_to_ofp(port_idx), LLONG_MAX); |
4e022ec0 | 2274 | return u16_to_ofp(port_idx); |
e1b1d06a JP |
2275 | } |
2276 | ||
2277 | static void | |
fdcea803 | 2278 | dealloc_ofp_port(struct ofproto *ofproto, ofp_port_t ofp_port) |
e1b1d06a | 2279 | { |
430dbb14 | 2280 | if (ofp_to_u16(ofp_port) < ofproto->max_ports) { |
fdcea803 | 2281 | ofport_set_usage(ofproto, ofp_port, time_msec()); |
40fa9417 | 2282 | } |
e1b1d06a JP |
2283 | } |
2284 | ||
fbfa2911 BP |
2285 | /* Opens and returns a netdev for 'ofproto_port' in 'ofproto', or a null |
2286 | * pointer if the netdev cannot be opened. On success, also fills in | |
d7d92203 | 2287 | * '*pp'. */ |
b33951b8 | 2288 | static struct netdev * |
e1b1d06a JP |
2289 | ofport_open(struct ofproto *ofproto, |
2290 | struct ofproto_port *ofproto_port, | |
9e1fd49b | 2291 | struct ofputil_phy_port *pp) |
064af421 BP |
2292 | { |
2293 | enum netdev_flags flags; | |
064af421 | 2294 | struct netdev *netdev; |
064af421 BP |
2295 | int error; |
2296 | ||
18812dff | 2297 | error = netdev_open(ofproto_port->name, ofproto_port->type, &netdev); |
064af421 | 2298 | if (error) { |
fbfa2911 | 2299 | VLOG_WARN_RL(&rl, "%s: ignoring port %s (%"PRIu16") because netdev %s " |
064af421 | 2300 | "cannot be opened (%s)", |
fbfa2911 | 2301 | ofproto->name, |
abe529af | 2302 | ofproto_port->name, ofproto_port->ofp_port, |
10a89ef0 | 2303 | ofproto_port->name, ovs_strerror(error)); |
064af421 BP |
2304 | return NULL; |
2305 | } | |
2306 | ||
e1b1d06a JP |
2307 | if (ofproto_port->ofp_port == OFPP_NONE) { |
2308 | if (!strcmp(ofproto->name, ofproto_port->name)) { | |
2309 | ofproto_port->ofp_port = OFPP_LOCAL; | |
2310 | } else { | |
2311 | ofproto_port->ofp_port = alloc_ofp_port(ofproto, | |
2312 | ofproto_port->name); | |
2313 | } | |
2314 | } | |
9e1fd49b BP |
2315 | pp->port_no = ofproto_port->ofp_port; |
2316 | netdev_get_etheraddr(netdev, pp->hw_addr); | |
2317 | ovs_strlcpy(pp->name, ofproto_port->name, sizeof pp->name); | |
064af421 | 2318 | netdev_get_flags(netdev, &flags); |
9e1fd49b BP |
2319 | pp->config = flags & NETDEV_UP ? 0 : OFPUTIL_PC_PORT_DOWN; |
2320 | pp->state = netdev_get_carrier(netdev) ? 0 : OFPUTIL_PS_LINK_DOWN; | |
2321 | netdev_get_features(netdev, &pp->curr, &pp->advertised, | |
2322 | &pp->supported, &pp->peer); | |
cd65125d BP |
2323 | pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000; |
2324 | pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000; | |
118c4676 | 2325 | |
b33951b8 | 2326 | return netdev; |
064af421 BP |
2327 | } |
2328 | ||
b33951b8 | 2329 | /* Returns true if most fields of 'a' and 'b' are equal. Differences in name, |
d7d92203 | 2330 | * port number, and 'config' bits other than OFPUTIL_PC_PORT_DOWN are |
b33951b8 BP |
2331 | * disregarded. */ |
2332 | static bool | |
9e1fd49b BP |
2333 | ofport_equal(const struct ofputil_phy_port *a, |
2334 | const struct ofputil_phy_port *b) | |
064af421 | 2335 | { |
9e1fd49b | 2336 | return (eth_addr_equals(a->hw_addr, b->hw_addr) |
064af421 | 2337 | && a->state == b->state |
9e1fd49b | 2338 | && !((a->config ^ b->config) & OFPUTIL_PC_PORT_DOWN) |
064af421 BP |
2339 | && a->curr == b->curr |
2340 | && a->advertised == b->advertised | |
2341 | && a->supported == b->supported | |
9e1fd49b BP |
2342 | && a->peer == b->peer |
2343 | && a->curr_speed == b->curr_speed | |
2344 | && a->max_speed == b->max_speed); | |
064af421 BP |
2345 | } |
2346 | ||
b33951b8 BP |
2347 | /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'. |
2348 | * The caller must ensure that 'p' does not have a conflicting ofport (that is, | |
2349 | * one with the same name or port number). */ | |
064af421 | 2350 | static void |
b33951b8 | 2351 | ofport_install(struct ofproto *p, |
9e1fd49b | 2352 | struct netdev *netdev, const struct ofputil_phy_port *pp) |
064af421 | 2353 | { |
b33951b8 BP |
2354 | const char *netdev_name = netdev_get_name(netdev); |
2355 | struct ofport *ofport; | |
abe529af | 2356 | int error; |
72b06300 | 2357 | |
b33951b8 | 2358 | /* Create ofport. */ |
abe529af BP |
2359 | ofport = p->ofproto_class->port_alloc(); |
2360 | if (!ofport) { | |
2361 | error = ENOMEM; | |
2362 | goto error; | |
2363 | } | |
0f7d71a5 | 2364 | ofport->ofproto = p; |
b33951b8 | 2365 | ofport->netdev = netdev; |
61501798 | 2366 | ofport->change_seq = netdev_get_change_seq(netdev); |
9e1fd49b BP |
2367 | ofport->pp = *pp; |
2368 | ofport->ofp_port = pp->port_no; | |
65e0be10 | 2369 | ofport->created = time_msec(); |
b33951b8 BP |
2370 | |
2371 | /* Add port to 'p'. */ | |
4e022ec0 | 2372 | hmap_insert(&p->ports, &ofport->hmap_node, |
f9c0c3ec | 2373 | hash_ofp_port(ofport->ofp_port)); |
72b06300 | 2374 | shash_add(&p->port_by_name, netdev_name, ofport); |
abe529af | 2375 | |
ada3428f | 2376 | update_mtu(p, ofport); |
9197df76 | 2377 | |
abe529af BP |
2378 | /* Let the ofproto_class initialize its private data. */ |
2379 | error = p->ofproto_class->port_construct(ofport); | |
2380 | if (error) { | |
2381 | goto error; | |
2382 | } | |
2a6f78e0 | 2383 | connmgr_send_port_status(p->connmgr, NULL, pp, OFPPR_ADD); |
abe529af BP |
2384 | return; |
2385 | ||
2386 | error: | |
2387 | VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)", | |
10a89ef0 | 2388 | p->name, netdev_name, ovs_strerror(error)); |
abe529af BP |
2389 | if (ofport) { |
2390 | ofport_destroy__(ofport); | |
2391 | } else { | |
2392 | netdev_close(netdev); | |
72b06300 | 2393 | } |
064af421 BP |
2394 | } |
2395 | ||
b33951b8 | 2396 | /* Removes 'ofport' from 'p' and destroys it. */ |
064af421 | 2397 | static void |
0f7d71a5 | 2398 | ofport_remove(struct ofport *ofport) |
064af421 | 2399 | { |
2a6f78e0 | 2400 | connmgr_send_port_status(ofport->ofproto->connmgr, NULL, &ofport->pp, |
fa066f01 | 2401 | OFPPR_DELETE); |
abe529af | 2402 | ofport_destroy(ofport); |
b33951b8 BP |
2403 | } |
2404 | ||
2405 | /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and | |
2406 | * destroys it. */ | |
2407 | static void | |
2408 | ofport_remove_with_name(struct ofproto *ofproto, const char *name) | |
2409 | { | |
2410 | struct ofport *port = shash_find_data(&ofproto->port_by_name, name); | |
2411 | if (port) { | |
0f7d71a5 | 2412 | ofport_remove(port); |
b33951b8 BP |
2413 | } |
2414 | } | |
2415 | ||
9e1fd49b | 2416 | /* Updates 'port' with new 'pp' description. |
b33951b8 BP |
2417 | * |
2418 | * Does not handle a name or port number change. The caller must implement | |
2419 | * such a change as a delete followed by an add. */ | |
2420 | static void | |
9e1fd49b | 2421 | ofport_modified(struct ofport *port, struct ofputil_phy_port *pp) |
b33951b8 | 2422 | { |
9e1fd49b BP |
2423 | memcpy(port->pp.hw_addr, pp->hw_addr, ETH_ADDR_LEN); |
2424 | port->pp.config = ((port->pp.config & ~OFPUTIL_PC_PORT_DOWN) | |
2425 | | (pp->config & OFPUTIL_PC_PORT_DOWN)); | |
53fd5c7c BP |
2426 | port->pp.state = ((port->pp.state & ~OFPUTIL_PS_LINK_DOWN) |
2427 | | (pp->state & OFPUTIL_PS_LINK_DOWN)); | |
9e1fd49b BP |
2428 | port->pp.curr = pp->curr; |
2429 | port->pp.advertised = pp->advertised; | |
2430 | port->pp.supported = pp->supported; | |
2431 | port->pp.peer = pp->peer; | |
2432 | port->pp.curr_speed = pp->curr_speed; | |
2433 | port->pp.max_speed = pp->max_speed; | |
b33951b8 | 2434 | |
2a6f78e0 BP |
2435 | connmgr_send_port_status(port->ofproto->connmgr, NULL, |
2436 | &port->pp, OFPPR_MODIFY); | |
064af421 BP |
2437 | } |
2438 | ||
5a2dfd47 JP |
2439 | /* Update OpenFlow 'state' in 'port' and notify controller. */ |
2440 | void | |
9e1fd49b | 2441 | ofproto_port_set_state(struct ofport *port, enum ofputil_port_state state) |
5a2dfd47 | 2442 | { |
9e1fd49b BP |
2443 | if (port->pp.state != state) { |
2444 | port->pp.state = state; | |
2a6f78e0 BP |
2445 | connmgr_send_port_status(port->ofproto->connmgr, NULL, |
2446 | &port->pp, OFPPR_MODIFY); | |
5a2dfd47 JP |
2447 | } |
2448 | } | |
2449 | ||
abe529af | 2450 | void |
4e022ec0 | 2451 | ofproto_port_unregister(struct ofproto *ofproto, ofp_port_t ofp_port) |
e7934396 | 2452 | { |
abe529af BP |
2453 | struct ofport *port = ofproto_get_port(ofproto, ofp_port); |
2454 | if (port) { | |
52a90c29 BP |
2455 | if (port->ofproto->ofproto_class->set_realdev) { |
2456 | port->ofproto->ofproto_class->set_realdev(port, 0, 0); | |
2457 | } | |
b308140a JP |
2458 | if (port->ofproto->ofproto_class->set_stp_port) { |
2459 | port->ofproto->ofproto_class->set_stp_port(port, NULL); | |
2460 | } | |
9efd308e DV |
2461 | if (port->ofproto->ofproto_class->set_rstp_port) { |
2462 | port->ofproto->ofproto_class->set_rstp_port(port, NULL); | |
2463 | } | |
abe529af | 2464 | if (port->ofproto->ofproto_class->set_cfm) { |
a5610457 | 2465 | port->ofproto->ofproto_class->set_cfm(port, NULL); |
abe529af BP |
2466 | } |
2467 | if (port->ofproto->ofproto_class->bundle_remove) { | |
2468 | port->ofproto->ofproto_class->bundle_remove(port); | |
e7934396 BP |
2469 | } |
2470 | } | |
2471 | } | |
2472 | ||
2473 | static void | |
abe529af | 2474 | ofport_destroy__(struct ofport *port) |
e7934396 | 2475 | { |
abe529af BP |
2476 | struct ofproto *ofproto = port->ofproto; |
2477 | const char *name = netdev_get_name(port->netdev); | |
fa066f01 | 2478 | |
abe529af BP |
2479 | hmap_remove(&ofproto->ports, &port->hmap_node); |
2480 | shash_delete(&ofproto->port_by_name, | |
2481 | shash_find(&ofproto->port_by_name, name)); | |
fa066f01 | 2482 | |
abe529af BP |
2483 | netdev_close(port->netdev); |
2484 | ofproto->ofproto_class->port_dealloc(port); | |
e7934396 BP |
2485 | } |
2486 | ||
064af421 | 2487 | static void |
abe529af | 2488 | ofport_destroy(struct ofport *port) |
064af421 | 2489 | { |
fa066f01 | 2490 | if (port) { |
e1b1d06a | 2491 | dealloc_ofp_port(port->ofproto, port->ofp_port); |
abe529af BP |
2492 | port->ofproto->ofproto_class->port_destruct(port); |
2493 | ofport_destroy__(port); | |
2494 | } | |
064af421 BP |
2495 | } |
2496 | ||
abe529af | 2497 | struct ofport * |
4e022ec0 | 2498 | ofproto_get_port(const struct ofproto *ofproto, ofp_port_t ofp_port) |
ca0f572c BP |
2499 | { |
2500 | struct ofport *port; | |
2501 | ||
f9c0c3ec | 2502 | HMAP_FOR_EACH_IN_BUCKET (port, hmap_node, hash_ofp_port(ofp_port), |
4e022ec0 | 2503 | &ofproto->ports) { |
abe529af | 2504 | if (port->ofp_port == ofp_port) { |
ca0f572c BP |
2505 | return port; |
2506 | } | |
2507 | } | |
2508 | return NULL; | |
2509 | } | |
2510 | ||
fdcea803 GS |
2511 | static long long int |
2512 | ofport_get_usage(const struct ofproto *ofproto, ofp_port_t ofp_port) | |
2513 | { | |
2514 | struct ofport_usage *usage; | |
2515 | ||
2516 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2517 | &ofproto->ofport_usage) { | |
2518 | if (usage->ofp_port == ofp_port) { | |
2519 | return usage->last_used; | |
2520 | } | |
2521 | } | |
2522 | return 0; | |
2523 | } | |
2524 | ||
2525 | static void | |
2526 | ofport_set_usage(struct ofproto *ofproto, ofp_port_t ofp_port, | |
2527 | long long int last_used) | |
2528 | { | |
2529 | struct ofport_usage *usage; | |
2530 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2531 | &ofproto->ofport_usage) { | |
2532 | if (usage->ofp_port == ofp_port) { | |
2533 | usage->last_used = last_used; | |
2534 | return; | |
2535 | } | |
2536 | } | |
2537 | ovs_assert(last_used == LLONG_MAX); | |
2538 | ||
2539 | usage = xmalloc(sizeof *usage); | |
2540 | usage->ofp_port = ofp_port; | |
2541 | usage->last_used = last_used; | |
2542 | hmap_insert(&ofproto->ofport_usage, &usage->hmap_node, | |
2543 | hash_ofp_port(ofp_port)); | |
2544 | } | |
2545 | ||
865b26a4 GS |
2546 | static void |
2547 | ofport_remove_usage(struct ofproto *ofproto, ofp_port_t ofp_port) | |
2548 | { | |
2549 | struct ofport_usage *usage; | |
2550 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2551 | &ofproto->ofport_usage) { | |
2552 | if (usage->ofp_port == ofp_port) { | |
2553 | hmap_remove(&ofproto->ofport_usage, &usage->hmap_node); | |
2554 | free(usage); | |
2555 | break; | |
2556 | } | |
2557 | } | |
2558 | } | |
2559 | ||
6527c598 PS |
2560 | int |
2561 | ofproto_port_get_stats(const struct ofport *port, struct netdev_stats *stats) | |
2562 | { | |
2563 | struct ofproto *ofproto = port->ofproto; | |
2564 | int error; | |
2565 | ||
2566 | if (ofproto->ofproto_class->port_get_stats) { | |
2567 | error = ofproto->ofproto_class->port_get_stats(port, stats); | |
2568 | } else { | |
2569 | error = EOPNOTSUPP; | |
2570 | } | |
2571 | ||
2572 | return error; | |
2573 | } | |
2574 | ||
064af421 | 2575 | static void |
b33951b8 | 2576 | update_port(struct ofproto *ofproto, const char *name) |
064af421 | 2577 | { |
abe529af | 2578 | struct ofproto_port ofproto_port; |
9e1fd49b | 2579 | struct ofputil_phy_port pp; |
b33951b8 BP |
2580 | struct netdev *netdev; |
2581 | struct ofport *port; | |
064af421 BP |
2582 | |
2583 | COVERAGE_INC(ofproto_update_port); | |
c874dc6d | 2584 | |
b33951b8 | 2585 | /* Fetch 'name''s location and properties from the datapath. */ |
abe529af | 2586 | netdev = (!ofproto_port_query_by_name(ofproto, name, &ofproto_port) |
fbfa2911 | 2587 | ? ofport_open(ofproto, &ofproto_port, &pp) |
b33951b8 | 2588 | : NULL); |
4e022ec0 | 2589 | |
b33951b8 | 2590 | if (netdev) { |
abe529af | 2591 | port = ofproto_get_port(ofproto, ofproto_port.ofp_port); |
b33951b8 | 2592 | if (port && !strcmp(netdev_get_name(port->netdev), name)) { |
e65942a0 BP |
2593 | struct netdev *old_netdev = port->netdev; |
2594 | ||
b33951b8 | 2595 | /* 'name' hasn't changed location. Any properties changed? */ |
9e1fd49b BP |
2596 | if (!ofport_equal(&port->pp, &pp)) { |
2597 | ofport_modified(port, &pp); | |
abe529af BP |
2598 | } |
2599 | ||
ada3428f | 2600 | update_mtu(ofproto, port); |
9197df76 | 2601 | |
e65942a0 BP |
2602 | /* Install the newly opened netdev in case it has changed. |
2603 | * Don't close the old netdev yet in case port_modified has to | |
2604 | * remove a retained reference to it.*/ | |
abe529af | 2605 | port->netdev = netdev; |
61501798 | 2606 | port->change_seq = netdev_get_change_seq(netdev); |
abe529af BP |
2607 | |
2608 | if (port->ofproto->ofproto_class->port_modified) { | |
2609 | port->ofproto->ofproto_class->port_modified(port); | |
b33951b8 | 2610 | } |
e65942a0 BP |
2611 | |
2612 | netdev_close(old_netdev); | |
b33951b8 BP |
2613 | } else { |
2614 | /* If 'port' is nonnull then its name differs from 'name' and thus | |
2615 | * we should delete it. If we think there's a port named 'name' | |
2616 | * then its port number must be wrong now so delete it too. */ | |
2617 | if (port) { | |
0f7d71a5 | 2618 | ofport_remove(port); |
b33951b8 BP |
2619 | } |
2620 | ofport_remove_with_name(ofproto, name); | |
9e1fd49b | 2621 | ofport_install(ofproto, netdev, &pp); |
c874dc6d | 2622 | } |
b33951b8 BP |
2623 | } else { |
2624 | /* Any port named 'name' is gone now. */ | |
2625 | ofport_remove_with_name(ofproto, name); | |
c874dc6d | 2626 | } |
abe529af | 2627 | ofproto_port_destroy(&ofproto_port); |
064af421 BP |
2628 | } |
2629 | ||
2630 | static int | |
2631 | init_ports(struct ofproto *p) | |
2632 | { | |
abe529af BP |
2633 | struct ofproto_port_dump dump; |
2634 | struct ofproto_port ofproto_port; | |
e1b1d06a | 2635 | struct shash_node *node, *next; |
abe529af BP |
2636 | |
2637 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { | |
e1b1d06a JP |
2638 | const char *name = ofproto_port.name; |
2639 | ||
2640 | if (shash_find(&p->port_by_name, name)) { | |
fbfa2911 | 2641 | VLOG_WARN_RL(&rl, "%s: ignoring duplicate device %s in datapath", |
e1b1d06a | 2642 | p->name, name); |
abe529af | 2643 | } else { |
9e1fd49b | 2644 | struct ofputil_phy_port pp; |
b33951b8 BP |
2645 | struct netdev *netdev; |
2646 | ||
e1b1d06a JP |
2647 | /* Check if an OpenFlow port number had been requested. */ |
2648 | node = shash_find(&init_ofp_ports, name); | |
2649 | if (node) { | |
2650 | const struct iface_hint *iface_hint = node->data; | |
4e022ec0 AW |
2651 | simap_put(&p->ofp_requests, name, |
2652 | ofp_to_u16(iface_hint->ofp_port)); | |
e1b1d06a JP |
2653 | } |
2654 | ||
fbfa2911 | 2655 | netdev = ofport_open(p, &ofproto_port, &pp); |
b33951b8 | 2656 | if (netdev) { |
9e1fd49b | 2657 | ofport_install(p, netdev, &pp); |
430dbb14 | 2658 | if (ofp_to_u16(ofproto_port.ofp_port) < p->max_ports) { |
7c35397c | 2659 | p->alloc_port_no = MAX(p->alloc_port_no, |
430dbb14 | 2660 | ofp_to_u16(ofproto_port.ofp_port)); |
7c35397c | 2661 | } |
064af421 BP |
2662 | } |
2663 | } | |
2664 | } | |
b0ec0f27 | 2665 | |
e1b1d06a | 2666 | SHASH_FOR_EACH_SAFE(node, next, &init_ofp_ports) { |
4f9e08a5 | 2667 | struct iface_hint *iface_hint = node->data; |
e1b1d06a JP |
2668 | |
2669 | if (!strcmp(iface_hint->br_name, p->name)) { | |
2670 | free(iface_hint->br_name); | |
2671 | free(iface_hint->br_type); | |
4f9e08a5 | 2672 | free(iface_hint); |
e1b1d06a JP |
2673 | shash_delete(&init_ofp_ports, node); |
2674 | } | |
2675 | } | |
2676 | ||
064af421 BP |
2677 | return 0; |
2678 | } | |
9197df76 JP |
2679 | |
2680 | /* Find the minimum MTU of all non-datapath devices attached to 'p'. | |
2681 | * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */ | |
2682 | static int | |
2683 | find_min_mtu(struct ofproto *p) | |
2684 | { | |
2685 | struct ofport *ofport; | |
2686 | int mtu = 0; | |
2687 | ||
2688 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2689 | struct netdev *netdev = ofport->netdev; | |
2690 | int dev_mtu; | |
2691 | ||
2692 | /* Skip any internal ports, since that's what we're trying to | |
2693 | * set. */ | |
2694 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
2695 | continue; | |
2696 | } | |
2697 | ||
2698 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2699 | continue; | |
2700 | } | |
2701 | if (!mtu || dev_mtu < mtu) { | |
2702 | mtu = dev_mtu; | |
2703 | } | |
2704 | } | |
2705 | ||
2706 | return mtu ? mtu: ETH_PAYLOAD_MAX; | |
2707 | } | |
2708 | ||
ada3428f PS |
2709 | /* Update MTU of all datapath devices on 'p' to the minimum of the |
2710 | * non-datapath ports in event of 'port' added or changed. */ | |
9197df76 | 2711 | static void |
ada3428f | 2712 | update_mtu(struct ofproto *p, struct ofport *port) |
9197df76 JP |
2713 | { |
2714 | struct ofport *ofport; | |
ada3428f PS |
2715 | struct netdev *netdev = port->netdev; |
2716 | int dev_mtu, old_min; | |
2717 | ||
2718 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2719 | port->mtu = 0; | |
2720 | return; | |
2721 | } | |
2722 | if (!strcmp(netdev_get_type(port->netdev), "internal")) { | |
2723 | if (dev_mtu > p->min_mtu) { | |
2724 | if (!netdev_set_mtu(port->netdev, p->min_mtu)) { | |
2725 | dev_mtu = p->min_mtu; | |
2726 | } | |
2727 | } | |
2728 | port->mtu = dev_mtu; | |
2729 | return; | |
2730 | } | |
2731 | ||
2732 | /* For non-internal port find new min mtu. */ | |
2733 | old_min = p->min_mtu; | |
2734 | port->mtu = dev_mtu; | |
2735 | p->min_mtu = find_min_mtu(p); | |
2736 | if (p->min_mtu == old_min) { | |
2737 | return; | |
2738 | } | |
9197df76 JP |
2739 | |
2740 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2741 | struct netdev *netdev = ofport->netdev; | |
2742 | ||
2743 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
ada3428f PS |
2744 | if (!netdev_set_mtu(netdev, p->min_mtu)) { |
2745 | ofport->mtu = p->min_mtu; | |
2746 | } | |
9197df76 JP |
2747 | } |
2748 | } | |
2749 | } | |
064af421 | 2750 | \f |
f416c8d6 JR |
2751 | static void |
2752 | ofproto_rule_destroy__(struct rule *rule) | |
2753 | OVS_NO_THREAD_SAFETY_ANALYSIS | |
2754 | { | |
2755 | cls_rule_destroy(CONST_CAST(struct cls_rule *, &rule->cr)); | |
2756 | rule_actions_destroy(rule_get_actions(rule)); | |
2757 | ovs_mutex_destroy(&rule->mutex); | |
2758 | rule->ofproto->ofproto_class->rule_dealloc(rule); | |
2759 | } | |
2760 | ||
2761 | static void | |
2762 | rule_destroy_cb(struct rule *rule) | |
f695ebfa | 2763 | OVS_NO_THREAD_SAFETY_ANALYSIS |
f416c8d6 | 2764 | { |
f695ebfa JR |
2765 | /* Send rule removed if needed. */ |
2766 | if (rule->flags & OFPUTIL_FF_SEND_FLOW_REM | |
2767 | && rule->removed_reason != OVS_OFPRR_NONE | |
2768 | && !rule_is_hidden(rule)) { | |
2769 | ofproto_rule_send_removed(rule); | |
2770 | } | |
f416c8d6 JR |
2771 | rule->ofproto->ofproto_class->rule_destruct(rule); |
2772 | ofproto_rule_destroy__(rule); | |
2773 | } | |
2774 | ||
a2143702 BP |
2775 | void |
2776 | ofproto_rule_ref(struct rule *rule) | |
064af421 | 2777 | { |
1eae3d33 | 2778 | if (rule) { |
37bec3d3 | 2779 | ovs_refcount_ref(&rule->ref_count); |
a2143702 BP |
2780 | } |
2781 | } | |
2782 | ||
f5d16e55 JR |
2783 | bool |
2784 | ofproto_rule_try_ref(struct rule *rule) | |
2785 | { | |
2786 | if (rule) { | |
2787 | return ovs_refcount_try_ref_rcu(&rule->ref_count); | |
2788 | } | |
2789 | return false; | |
2790 | } | |
2791 | ||
f416c8d6 JR |
2792 | /* Decrements 'rule''s ref_count and schedules 'rule' to be destroyed if the |
2793 | * ref_count reaches 0. | |
2794 | * | |
2795 | * Use of RCU allows short term use (between RCU quiescent periods) without | |
2796 | * keeping a reference. A reference must be taken if the rule needs to | |
2797 | * stay around accross the RCU quiescent periods. */ | |
a2143702 BP |
2798 | void |
2799 | ofproto_rule_unref(struct rule *rule) | |
2800 | { | |
24f83812 | 2801 | if (rule && ovs_refcount_unref_relaxed(&rule->ref_count) == 1) { |
f416c8d6 | 2802 | ovsrcu_postpone(rule_destroy_cb, rule); |
1eae3d33 | 2803 | } |
064af421 BP |
2804 | } |
2805 | ||
39c94593 JR |
2806 | static void |
2807 | remove_rule_rcu__(struct rule *rule) | |
2808 | OVS_REQUIRES(ofproto_mutex) | |
2809 | { | |
2810 | struct ofproto *ofproto = rule->ofproto; | |
2811 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
2812 | ||
2813 | ovs_assert(!cls_rule_visible_in_version(&rule->cr, CLS_MAX_VERSION)); | |
2814 | if (!classifier_remove(&table->cls, &rule->cr)) { | |
2815 | OVS_NOT_REACHED(); | |
2816 | } | |
2817 | ofproto->ofproto_class->rule_delete(rule); | |
2818 | ofproto_rule_unref(rule); | |
2819 | } | |
2820 | ||
2821 | static void | |
2822 | remove_rule_rcu(struct rule *rule) | |
2823 | OVS_EXCLUDED(ofproto_mutex) | |
2824 | { | |
2825 | ovs_mutex_lock(&ofproto_mutex); | |
2826 | remove_rule_rcu__(rule); | |
2827 | ovs_mutex_unlock(&ofproto_mutex); | |
2828 | } | |
2829 | ||
2830 | /* Removes and deletes rules from a NULL-terminated array of rule pointers. */ | |
2831 | static void | |
2832 | remove_rules_rcu(struct rule **rules) | |
2833 | OVS_EXCLUDED(ofproto_mutex) | |
2834 | { | |
2835 | struct rule **orig_rules = rules; | |
2836 | ||
2837 | if (*rules) { | |
2838 | struct ofproto *ofproto = rules[0]->ofproto; | |
2839 | unsigned long tables[BITMAP_N_LONGS(256)]; | |
2840 | struct rule *rule; | |
2841 | size_t table_id; | |
2842 | ||
2843 | memset(tables, 0, sizeof tables); | |
2844 | ||
2845 | ovs_mutex_lock(&ofproto_mutex); | |
2846 | while ((rule = *rules++)) { | |
2847 | /* Defer once for each new table. This defers the subtable cleanup | |
2848 | * until later, so that when removing large number of flows the | |
2849 | * operation is faster. */ | |
2850 | if (!bitmap_is_set(tables, rule->table_id)) { | |
2851 | struct classifier *cls = &ofproto->tables[rule->table_id].cls; | |
2852 | ||
2853 | bitmap_set1(tables, rule->table_id); | |
2854 | classifier_defer(cls); | |
2855 | } | |
2856 | remove_rule_rcu__(rule); | |
2857 | } | |
2858 | ||
2859 | BITMAP_FOR_EACH_1(table_id, 256, tables) { | |
2860 | struct classifier *cls = &ofproto->tables[table_id].cls; | |
2861 | ||
2862 | classifier_publish(cls); | |
2863 | } | |
2864 | ovs_mutex_unlock(&ofproto_mutex); | |
2865 | } | |
2866 | ||
2867 | free(orig_rules); | |
2868 | } | |
2869 | ||
809c7548 RW |
2870 | void |
2871 | ofproto_group_ref(struct ofgroup *group) | |
2872 | { | |
2873 | if (group) { | |
2874 | ovs_refcount_ref(&group->ref_count); | |
2875 | } | |
2876 | } | |
2877 | ||
2878 | void | |
2879 | ofproto_group_unref(struct ofgroup *group) | |
2880 | { | |
2881 | if (group && ovs_refcount_unref(&group->ref_count) == 1) { | |
2882 | group->ofproto->ofproto_class->group_destruct(group); | |
2883 | ofputil_bucket_list_destroy(&group->buckets); | |
2884 | group->ofproto->ofproto_class->group_dealloc(group); | |
2885 | } | |
2886 | } | |
2887 | ||
65efd2ab JR |
2888 | static uint32_t get_provider_meter_id(const struct ofproto *, |
2889 | uint32_t of_meter_id); | |
2890 | ||
dc723c44 JR |
2891 | /* Creates and returns a new 'struct rule_actions', whose actions are a copy |
2892 | * of from the 'ofpacts_len' bytes of 'ofpacts'. */ | |
2893 | const struct rule_actions * | |
4c7562c5 | 2894 | rule_actions_create(const struct ofpact *ofpacts, size_t ofpacts_len) |
6f00e29b BP |
2895 | { |
2896 | struct rule_actions *actions; | |
2897 | ||
dc723c44 | 2898 | actions = xmalloc(sizeof *actions + ofpacts_len); |
6f00e29b | 2899 | actions->ofpacts_len = ofpacts_len; |
4c7562c5 | 2900 | actions->has_meter = ofpacts_get_meter(ofpacts, ofpacts_len) != 0; |
dc723c44 | 2901 | memcpy(actions->ofpacts, ofpacts, ofpacts_len); |
65efd2ab | 2902 | |
35f48b8b BP |
2903 | actions->has_learn_with_delete = (next_learn_with_delete(actions, NULL) |
2904 | != NULL); | |
2905 | ||
6f00e29b BP |
2906 | return actions; |
2907 | } | |
2908 | ||
dc723c44 | 2909 | /* Free the actions after the RCU quiescent period is reached. */ |
6f00e29b | 2910 | void |
dc723c44 | 2911 | rule_actions_destroy(const struct rule_actions *actions) |
6f00e29b | 2912 | { |
06a0f3e2 | 2913 | if (actions) { |
dc723c44 | 2914 | ovsrcu_postpone(free, CONST_CAST(struct rule_actions *, actions)); |
6f00e29b BP |
2915 | } |
2916 | } | |
2917 | ||
bcf84111 | 2918 | /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action |
f25d0cf3 | 2919 | * that outputs to 'port' (output to OFPP_FLOOD and OFPP_ALL doesn't count). */ |
cdbdeeda | 2920 | bool |
4e022ec0 | 2921 | ofproto_rule_has_out_port(const struct rule *rule, ofp_port_t port) |
15aaf599 | 2922 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 2923 | { |
06a0f3e2 BP |
2924 | if (port == OFPP_ANY) { |
2925 | return true; | |
2926 | } else { | |
2927 | const struct rule_actions *actions = rule_get_actions(rule); | |
2928 | return ofpacts_output_to_port(actions->ofpacts, | |
2929 | actions->ofpacts_len, port); | |
2930 | } | |
064af421 BP |
2931 | } |
2932 | ||
7395c052 | 2933 | /* Returns true if 'rule' has group and equals group_id. */ |
74e79b7c | 2934 | static bool |
7395c052 | 2935 | ofproto_rule_has_out_group(const struct rule *rule, uint32_t group_id) |
15aaf599 | 2936 | OVS_REQUIRES(ofproto_mutex) |
7395c052 | 2937 | { |
06a0f3e2 BP |
2938 | if (group_id == OFPG_ANY) { |
2939 | return true; | |
2940 | } else { | |
2941 | const struct rule_actions *actions = rule_get_actions(rule); | |
2942 | return ofpacts_output_to_group(actions->ofpacts, | |
2943 | actions->ofpacts_len, group_id); | |
2944 | } | |
7395c052 NZ |
2945 | } |
2946 | ||
35412852 BP |
2947 | static void |
2948 | rule_execute_destroy(struct rule_execute *e) | |
eedc0097 | 2949 | { |
35412852 BP |
2950 | ofproto_rule_unref(e->rule); |
2951 | list_remove(&e->list_node); | |
2952 | free(e); | |
2953 | } | |
eedc0097 | 2954 | |
35412852 BP |
2955 | /* Executes all "rule_execute" operations queued up in ofproto->rule_executes, |
2956 | * by passing them to the ofproto provider. */ | |
2957 | static void | |
2958 | run_rule_executes(struct ofproto *ofproto) | |
15aaf599 | 2959 | OVS_EXCLUDED(ofproto_mutex) |
35412852 BP |
2960 | { |
2961 | struct rule_execute *e, *next; | |
ca6ba700 | 2962 | struct ovs_list executes; |
35412852 BP |
2963 | |
2964 | guarded_list_pop_all(&ofproto->rule_executes, &executes); | |
2965 | LIST_FOR_EACH_SAFE (e, next, list_node, &executes) { | |
35412852 BP |
2966 | struct flow flow; |
2967 | ||
cf62fa4c | 2968 | flow_extract(e->packet, &flow); |
b5e7e61a | 2969 | flow.in_port.ofp_port = e->in_port; |
35412852 BP |
2970 | ofproto->ofproto_class->rule_execute(e->rule, &flow, e->packet); |
2971 | ||
2972 | rule_execute_destroy(e); | |
2973 | } | |
2974 | } | |
2975 | ||
2976 | /* Destroys and discards all "rule_execute" operations queued up in | |
2977 | * ofproto->rule_executes. */ | |
2978 | static void | |
2979 | destroy_rule_executes(struct ofproto *ofproto) | |
2980 | { | |
2981 | struct rule_execute *e, *next; | |
ca6ba700 | 2982 | struct ovs_list executes; |
35412852 BP |
2983 | |
2984 | guarded_list_pop_all(&ofproto->rule_executes, &executes); | |
2985 | LIST_FOR_EACH_SAFE (e, next, list_node, &executes) { | |
cf62fa4c | 2986 | dp_packet_delete(e->packet); |
35412852 BP |
2987 | rule_execute_destroy(e); |
2988 | } | |
350a665f BP |
2989 | } |
2990 | ||
adcf00ba | 2991 | static bool |
834fe5cb | 2992 | rule_is_readonly(const struct rule *rule) |
5c67e4af | 2993 | { |
834fe5cb BP |
2994 | const struct oftable *table = &rule->ofproto->tables[rule->table_id]; |
2995 | return (table->flags & OFTABLE_READONLY) != 0; | |
5c67e4af | 2996 | } |
fa066f01 | 2997 | \f |
35f48b8b BP |
2998 | static uint32_t |
2999 | hash_learned_cookie(ovs_be64 cookie_, uint8_t table_id) | |
3000 | { | |
3001 | uint64_t cookie = (OVS_FORCE uint64_t) cookie_; | |
3002 | return hash_3words(cookie, cookie >> 32, table_id); | |
3003 | } | |
3004 | ||
3005 | static void | |
3006 | learned_cookies_update_one__(struct ofproto *ofproto, | |
3007 | const struct ofpact_learn *learn, | |
ca6ba700 | 3008 | int delta, struct ovs_list *dead_cookies) |
35f48b8b BP |
3009 | OVS_REQUIRES(ofproto_mutex) |
3010 | { | |
3011 | uint32_t hash = hash_learned_cookie(learn->cookie, learn->table_id); | |
3012 | struct learned_cookie *c; | |
3013 | ||
3014 | HMAP_FOR_EACH_WITH_HASH (c, u.hmap_node, hash, &ofproto->learned_cookies) { | |
3015 | if (c->cookie == learn->cookie && c->table_id == learn->table_id) { | |
3016 | c->n += delta; | |
3017 | ovs_assert(c->n >= 0); | |
3018 | ||
3019 | if (!c->n) { | |
3020 | hmap_remove(&ofproto->learned_cookies, &c->u.hmap_node); | |
3021 | list_push_back(dead_cookies, &c->u.list_node); | |
3022 | } | |
3023 | ||
3024 | return; | |
3025 | } | |
3026 | } | |
3027 | ||
3028 | ovs_assert(delta > 0); | |
3029 | c = xmalloc(sizeof *c); | |
3030 | hmap_insert(&ofproto->learned_cookies, &c->u.hmap_node, hash); | |
3031 | c->cookie = learn->cookie; | |
3032 | c->table_id = learn->table_id; | |
3033 | c->n = delta; | |
3034 | } | |
3035 | ||
3036 | static const struct ofpact_learn * | |
3037 | next_learn_with_delete(const struct rule_actions *actions, | |
3038 | const struct ofpact_learn *start) | |
3039 | { | |
3040 | const struct ofpact *pos; | |
3041 | ||
3042 | for (pos = start ? ofpact_next(&start->ofpact) : actions->ofpacts; | |
3043 | pos < ofpact_end(actions->ofpacts, actions->ofpacts_len); | |
3044 | pos = ofpact_next(pos)) { | |
3045 | if (pos->type == OFPACT_LEARN) { | |
3046 | const struct ofpact_learn *learn = ofpact_get_LEARN(pos); | |
3047 | if (learn->flags & NX_LEARN_F_DELETE_LEARNED) { | |
3048 | return learn; | |
3049 | } | |
3050 | } | |
3051 | } | |
3052 | ||
3053 | return NULL; | |
3054 | } | |
3055 | ||
3056 | static void | |
3057 | learned_cookies_update__(struct ofproto *ofproto, | |
3058 | const struct rule_actions *actions, | |
ca6ba700 | 3059 | int delta, struct ovs_list *dead_cookies) |
35f48b8b BP |
3060 | OVS_REQUIRES(ofproto_mutex) |
3061 | { | |
3062 | if (actions->has_learn_with_delete) { | |
3063 | const struct ofpact_learn *learn; | |
3064 | ||
3065 | for (learn = next_learn_with_delete(actions, NULL); learn; | |
3066 | learn = next_learn_with_delete(actions, learn)) { | |
3067 | learned_cookies_update_one__(ofproto, learn, delta, dead_cookies); | |
3068 | } | |
3069 | } | |
3070 | } | |
3071 | ||
3072 | static void | |
3073 | learned_cookies_inc(struct ofproto *ofproto, | |
3074 | const struct rule_actions *actions) | |
3075 | OVS_REQUIRES(ofproto_mutex) | |
3076 | { | |
3077 | learned_cookies_update__(ofproto, actions, +1, NULL); | |
3078 | } | |
3079 | ||
3080 | static void | |
3081 | learned_cookies_dec(struct ofproto *ofproto, | |
3082 | const struct rule_actions *actions, | |
ca6ba700 | 3083 | struct ovs_list *dead_cookies) |
35f48b8b BP |
3084 | OVS_REQUIRES(ofproto_mutex) |
3085 | { | |
3086 | learned_cookies_update__(ofproto, actions, -1, dead_cookies); | |
3087 | } | |
3088 | ||
3089 | static void | |
ca6ba700 | 3090 | learned_cookies_flush(struct ofproto *ofproto, struct ovs_list *dead_cookies) |
35f48b8b BP |
3091 | OVS_REQUIRES(ofproto_mutex) |
3092 | { | |
5f03c983 | 3093 | struct learned_cookie *c; |
35f48b8b | 3094 | |
5f03c983 | 3095 | LIST_FOR_EACH_POP (c, u.list_node, dead_cookies) { |
35f48b8b BP |
3096 | struct rule_criteria criteria; |
3097 | struct rule_collection rules; | |
3098 | struct match match; | |
3099 | ||
3100 | match_init_catchall(&match); | |
2b7b1427 | 3101 | rule_criteria_init(&criteria, c->table_id, &match, 0, CLS_MAX_VERSION, |
35f48b8b BP |
3102 | c->cookie, OVS_BE64_MAX, OFPP_ANY, OFPG_ANY); |
3103 | rule_criteria_require_rw(&criteria, false); | |
3104 | collect_rules_loose(ofproto, &criteria, &rules); | |
35f48b8b | 3105 | rule_criteria_destroy(&criteria); |
39c94593 | 3106 | delete_flows__(&rules, OFPRR_DELETE, NULL); |
35f48b8b | 3107 | |
35f48b8b BP |
3108 | free(c); |
3109 | } | |
3110 | } | |
3111 | \f | |
90bf1e07 | 3112 | static enum ofperr |
d1e2cf21 | 3113 | handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3114 | { |
b0421aa2 | 3115 | ofconn_send_reply(ofconn, make_echo_reply(oh)); |
064af421 | 3116 | return 0; |
064af421 BP |
3117 | } |
3118 | ||
3c1bb396 BP |
3119 | static void |
3120 | query_tables(struct ofproto *ofproto, | |
3121 | struct ofputil_table_features **featuresp, | |
3122 | struct ofputil_table_stats **statsp) | |
3123 | { | |
178742f9 BP |
3124 | struct mf_bitmap rw_fields = oxm_writable_fields(); |
3125 | struct mf_bitmap match = oxm_matchable_fields(); | |
3126 | struct mf_bitmap mask = oxm_maskable_fields(); | |
3c1bb396 BP |
3127 | |
3128 | struct ofputil_table_features *features; | |
3129 | struct ofputil_table_stats *stats; | |
3130 | int i; | |
3131 | ||
3c1bb396 BP |
3132 | features = *featuresp = xcalloc(ofproto->n_tables, sizeof *features); |
3133 | for (i = 0; i < ofproto->n_tables; i++) { | |
3134 | struct ofputil_table_features *f = &features[i]; | |
3135 | ||
3136 | f->table_id = i; | |
3137 | sprintf(f->name, "table%d", i); | |
3138 | f->metadata_match = OVS_BE64_MAX; | |
3139 | f->metadata_write = OVS_BE64_MAX; | |
afcea9ea | 3140 | atomic_read_relaxed(&ofproto->tables[i].miss_config, &f->miss_config); |
3c1bb396 BP |
3141 | f->max_entries = 1000000; |
3142 | ||
5dc7516b BP |
3143 | bool more_tables = false; |
3144 | for (int j = i + 1; j < ofproto->n_tables; j++) { | |
3145 | if (!(ofproto->tables[j].flags & OFTABLE_HIDDEN)) { | |
3146 | bitmap_set1(f->nonmiss.next, j); | |
3147 | more_tables = true; | |
3148 | } | |
3149 | } | |
3c1bb396 | 3150 | f->nonmiss.instructions = (1u << N_OVS_INSTRUCTIONS) - 1; |
5dc7516b | 3151 | if (!more_tables) { |
3c1bb396 BP |
3152 | f->nonmiss.instructions &= ~(1u << OVSINST_OFPIT11_GOTO_TABLE); |
3153 | } | |
3154 | f->nonmiss.write.ofpacts = (UINT64_C(1) << N_OFPACTS) - 1; | |
3155 | f->nonmiss.write.set_fields = rw_fields; | |
3156 | f->nonmiss.apply = f->nonmiss.write; | |
3157 | f->miss = f->nonmiss; | |
3158 | ||
3159 | f->match = match; | |
3160 | f->mask = mask; | |
3161 | f->wildcard = match; | |
3162 | } | |
3163 | ||
3164 | if (statsp) { | |
3165 | stats = *statsp = xcalloc(ofproto->n_tables, sizeof *stats); | |
3166 | for (i = 0; i < ofproto->n_tables; i++) { | |
3167 | struct ofputil_table_stats *s = &stats[i]; | |
3c1bb396 BP |
3168 | |
3169 | s->table_id = i; | |
d79e3d70 | 3170 | s->active_count = ofproto->tables[i].n_flows; |
3fbbcba7 BP |
3171 | if (i == 0) { |
3172 | s->active_count -= connmgr_count_hidden_rules( | |
3173 | ofproto->connmgr); | |
3174 | } | |
3c1bb396 BP |
3175 | } |
3176 | } else { | |
3177 | stats = NULL; | |
3178 | } | |
3179 | ||
3180 | ofproto->ofproto_class->query_tables(ofproto, features, stats); | |
3181 | ||
3182 | for (i = 0; i < ofproto->n_tables; i++) { | |
3183 | const struct oftable *table = &ofproto->tables[i]; | |
3184 | struct ofputil_table_features *f = &features[i]; | |
3185 | ||
3186 | if (table->name) { | |
3187 | ovs_strzcpy(f->name, table->name, sizeof f->name); | |
3188 | } | |
3189 | ||
3190 | if (table->max_flows < f->max_entries) { | |
3191 | f->max_entries = table->max_flows; | |
3192 | } | |
3193 | } | |
3194 | } | |
3195 | ||
3196 | static void | |
3197 | query_switch_features(struct ofproto *ofproto, | |
3198 | bool *arp_match_ip, uint64_t *ofpacts) | |
3199 | { | |
3200 | struct ofputil_table_features *features, *f; | |
3201 | ||
3202 | *arp_match_ip = false; | |
3203 | *ofpacts = 0; | |
3204 | ||
3205 | query_tables(ofproto, &features, NULL); | |
3206 | for (f = features; f < &features[ofproto->n_tables]; f++) { | |
3207 | *ofpacts |= f->nonmiss.apply.ofpacts | f->miss.apply.ofpacts; | |
3208 | if (bitmap_is_set(f->match.bm, MFF_ARP_SPA) || | |
3209 | bitmap_is_set(f->match.bm, MFF_ARP_TPA)) { | |
3210 | *arp_match_ip = true; | |
3211 | } | |
3212 | } | |
3213 | free(features); | |
3214 | ||
3215 | /* Sanity check. */ | |
3216 | ovs_assert(*ofpacts & (UINT64_C(1) << OFPACT_OUTPUT)); | |
3217 | } | |
3218 | ||
90bf1e07 | 3219 | static enum ofperr |
d1e2cf21 | 3220 | handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3221 | { |
64ff1d96 | 3222 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
9e1fd49b | 3223 | struct ofputil_switch_features features; |
064af421 | 3224 | struct ofport *port; |
6c1491fb | 3225 | bool arp_match_ip; |
9e1fd49b | 3226 | struct ofpbuf *b; |
064af421 | 3227 | |
3c1bb396 | 3228 | query_switch_features(ofproto, &arp_match_ip, &features.ofpacts); |
064af421 | 3229 | |
9e1fd49b BP |
3230 | features.datapath_id = ofproto->datapath_id; |
3231 | features.n_buffers = pktbuf_capacity(); | |
adcf00ba | 3232 | features.n_tables = ofproto_get_n_visible_tables(ofproto); |
9e1fd49b | 3233 | features.capabilities = (OFPUTIL_C_FLOW_STATS | OFPUTIL_C_TABLE_STATS | |
4efe455d BP |
3234 | OFPUTIL_C_PORT_STATS | OFPUTIL_C_QUEUE_STATS | |
3235 | OFPUTIL_C_GROUP_STATS); | |
6c1491fb | 3236 | if (arp_match_ip) { |
9e1fd49b | 3237 | features.capabilities |= OFPUTIL_C_ARP_MATCH_IP; |
6c1491fb | 3238 | } |
2e1ae200 JR |
3239 | /* FIXME: Fill in proper features.auxiliary_id for auxiliary connections */ |
3240 | features.auxiliary_id = 0; | |
9e1fd49b BP |
3241 | b = ofputil_encode_switch_features(&features, ofconn_get_protocol(ofconn), |
3242 | oh->xid); | |
64ff1d96 | 3243 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
9e1fd49b | 3244 | ofputil_put_switch_features_port(&port->pp, b); |
064af421 | 3245 | } |
064af421 | 3246 | |
9e1fd49b | 3247 | ofconn_send_reply(ofconn, b); |
064af421 BP |
3248 | return 0; |
3249 | } | |
064af421 | 3250 | |
90bf1e07 | 3251 | static enum ofperr |
d1e2cf21 | 3252 | handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3253 | { |
64ff1d96 | 3254 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 | 3255 | struct ofp_switch_config *osc; |
f0fd1a17 | 3256 | enum ofp_config_flags flags; |
7257b535 | 3257 | struct ofpbuf *buf; |
959a2ecd | 3258 | |
064af421 | 3259 | /* Send reply. */ |
982697a4 BP |
3260 | buf = ofpraw_alloc_reply(OFPRAW_OFPT_GET_CONFIG_REPLY, oh, 0); |
3261 | osc = ofpbuf_put_uninit(buf, sizeof *osc); | |
f0fd1a17 | 3262 | flags = ofproto->frag_handling; |
2e1ae200 JR |
3263 | /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */ |
3264 | if (oh->version < OFP13_VERSION | |
3265 | && ofconn_get_invalid_ttl_to_controller(ofconn)) { | |
f0fd1a17 PS |
3266 | flags |= OFPC_INVALID_TTL_TO_CONTROLLER; |
3267 | } | |
3268 | osc->flags = htons(flags); | |
810605a2 | 3269 | osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn)); |
b0421aa2 | 3270 | ofconn_send_reply(ofconn, buf); |
2d70a31a | 3271 | |
064af421 BP |
3272 | return 0; |
3273 | } | |
064af421 | 3274 | |
90bf1e07 | 3275 | static enum ofperr |
982697a4 | 3276 | handle_set_config(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3277 | { |
982697a4 | 3278 | const struct ofp_switch_config *osc = ofpmsg_body(oh); |
64ff1d96 | 3279 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
d1e2cf21 | 3280 | uint16_t flags = ntohs(osc->flags); |
2d70a31a | 3281 | |
7257b535 | 3282 | if (ofconn_get_type(ofconn) != OFCONN_PRIMARY |
f4f1ea7e | 3283 | || ofconn_get_role(ofconn) != OFPCR12_ROLE_SLAVE) { |
7257b535 BP |
3284 | enum ofp_config_flags cur = ofproto->frag_handling; |
3285 | enum ofp_config_flags next = flags & OFPC_FRAG_MASK; | |
3286 | ||
cb22974d | 3287 | ovs_assert((cur & OFPC_FRAG_MASK) == cur); |
7257b535 BP |
3288 | if (cur != next) { |
3289 | if (ofproto->ofproto_class->set_frag_handling(ofproto, next)) { | |
3290 | ofproto->frag_handling = next; | |
3291 | } else { | |
3292 | VLOG_WARN_RL(&rl, "%s: unsupported fragment handling mode %s", | |
3293 | ofproto->name, | |
3294 | ofputil_frag_handling_to_string(next)); | |
3295 | } | |
064af421 BP |
3296 | } |
3297 | } | |
2e1ae200 | 3298 | /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */ |
f0fd1a17 | 3299 | ofconn_set_invalid_ttl_to_controller(ofconn, |
2e1ae200 JR |
3300 | (oh->version < OFP13_VERSION |
3301 | && flags & OFPC_INVALID_TTL_TO_CONTROLLER)); | |
ebe482fd | 3302 | |
810605a2 | 3303 | ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len)); |
0ad9b732 | 3304 | |
064af421 | 3305 | return 0; |
064af421 BP |
3306 | } |
3307 | ||
9deba63b | 3308 | /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow |
90bf1e07 BP |
3309 | * error message code for the caller to propagate upward. Otherwise, returns |
3310 | * 0. | |
3311 | * | |
3312 | * The log message mentions 'msg_type'. */ | |
3313 | static enum ofperr | |
3314 | reject_slave_controller(struct ofconn *ofconn) | |
9deba63b | 3315 | { |
1ce0a5fa | 3316 | if (ofconn_get_type(ofconn) == OFCONN_PRIMARY |
f4f1ea7e | 3317 | && ofconn_get_role(ofconn) == OFPCR12_ROLE_SLAVE) { |
20e4ec1a | 3318 | return OFPERR_OFPBRC_IS_SLAVE; |
9deba63b BP |
3319 | } else { |
3320 | return 0; | |
3321 | } | |
3322 | } | |
3323 | ||
7e9f8266 BP |
3324 | /* Checks that the 'ofpacts_len' bytes of action in 'ofpacts' are appropriate |
3325 | * for 'ofproto': | |
3326 | * | |
3327 | * - If they use a meter, then 'ofproto' has that meter configured. | |
3328 | * | |
3329 | * - If they use any groups, then 'ofproto' has that group configured. | |
3330 | * | |
3331 | * Returns 0 if successful, otherwise an OpenFlow error. */ | |
9cae45dc JR |
3332 | static enum ofperr |
3333 | ofproto_check_ofpacts(struct ofproto *ofproto, | |
7e9f8266 | 3334 | const struct ofpact ofpacts[], size_t ofpacts_len) |
9cae45dc | 3335 | { |
84d68566 | 3336 | const struct ofpact *a; |
9cae45dc JR |
3337 | uint32_t mid; |
3338 | ||
7e9f8266 BP |
3339 | mid = ofpacts_get_meter(ofpacts, ofpacts_len); |
3340 | if (mid && get_provider_meter_id(ofproto, mid) == UINT32_MAX) { | |
3341 | return OFPERR_OFPMMFC_INVALID_METER; | |
9cae45dc JR |
3342 | } |
3343 | ||
84d68566 | 3344 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
7e9f8266 BP |
3345 | if (a->type == OFPACT_GROUP |
3346 | && !ofproto_group_exists(ofproto, ofpact_get_GROUP(a)->group_id)) { | |
3347 | return OFPERR_OFPBAC_BAD_OUT_GROUP; | |
84d68566 SH |
3348 | } |
3349 | } | |
3350 | ||
9cae45dc JR |
3351 | return 0; |
3352 | } | |
3353 | ||
90bf1e07 | 3354 | static enum ofperr |
982697a4 | 3355 | handle_packet_out(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3356 | { |
64ff1d96 | 3357 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
c6a93eb7 | 3358 | struct ofputil_packet_out po; |
cf62fa4c | 3359 | struct dp_packet *payload; |
f25d0cf3 BP |
3360 | uint64_t ofpacts_stub[1024 / 8]; |
3361 | struct ofpbuf ofpacts; | |
ae412e7d | 3362 | struct flow flow; |
90bf1e07 | 3363 | enum ofperr error; |
064af421 | 3364 | |
ac51afaf BP |
3365 | COVERAGE_INC(ofproto_packet_out); |
3366 | ||
76589937 | 3367 | error = reject_slave_controller(ofconn); |
9deba63b | 3368 | if (error) { |
f25d0cf3 | 3369 | goto exit; |
9deba63b BP |
3370 | } |
3371 | ||
c6a93eb7 | 3372 | /* Decode message. */ |
f25d0cf3 | 3373 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
982697a4 | 3374 | error = ofputil_decode_packet_out(&po, oh, &ofpacts); |
064af421 | 3375 | if (error) { |
f25d0cf3 | 3376 | goto exit_free_ofpacts; |
064af421 | 3377 | } |
430dbb14 | 3378 | if (ofp_to_u16(po.in_port) >= p->max_ports |
4e022ec0 | 3379 | && ofp_to_u16(po.in_port) < ofp_to_u16(OFPP_MAX)) { |
2e1bfcb6 | 3380 | error = OFPERR_OFPBRC_BAD_PORT; |
91858960 BP |
3381 | goto exit_free_ofpacts; |
3382 | } | |
064af421 | 3383 | |
ac51afaf | 3384 | /* Get payload. */ |
c6a93eb7 BP |
3385 | if (po.buffer_id != UINT32_MAX) { |
3386 | error = ofconn_pktbuf_retrieve(ofconn, po.buffer_id, &payload, NULL); | |
3387 | if (error || !payload) { | |
f25d0cf3 | 3388 | goto exit_free_ofpacts; |
064af421 | 3389 | } |
064af421 | 3390 | } else { |
bb622f82 | 3391 | /* Ensure that the L3 header is 32-bit aligned. */ |
cf62fa4c | 3392 | payload = dp_packet_clone_data_with_headroom(po.packet, po.packet_len, 2); |
e1154f71 BP |
3393 | } |
3394 | ||
548de4dd | 3395 | /* Verify actions against packet, then send packet if successful. */ |
cf62fa4c | 3396 | flow_extract(payload, &flow); |
b5e7e61a | 3397 | flow.in_port.ofp_port = po.in_port; |
7e9f8266 | 3398 | error = ofproto_check_ofpacts(p, po.ofpacts, po.ofpacts_len); |
548de4dd BP |
3399 | if (!error) { |
3400 | error = p->ofproto_class->packet_out(p, payload, &flow, | |
3401 | po.ofpacts, po.ofpacts_len); | |
3402 | } | |
cf62fa4c | 3403 | dp_packet_delete(payload); |
abe529af | 3404 | |
f25d0cf3 BP |
3405 | exit_free_ofpacts: |
3406 | ofpbuf_uninit(&ofpacts); | |
3407 | exit: | |
abe529af | 3408 | return error; |
064af421 BP |
3409 | } |
3410 | ||
3411 | static void | |
2a6f78e0 | 3412 | update_port_config(struct ofconn *ofconn, struct ofport *port, |
9e1fd49b BP |
3413 | enum ofputil_port_config config, |
3414 | enum ofputil_port_config mask) | |
064af421 | 3415 | { |
2a6f78e0 | 3416 | enum ofputil_port_config toggle = (config ^ port->pp.config) & mask; |
abe529af | 3417 | |
2a6f78e0 BP |
3418 | if (toggle & OFPUTIL_PC_PORT_DOWN |
3419 | && (config & OFPUTIL_PC_PORT_DOWN | |
3420 | ? netdev_turn_flags_off(port->netdev, NETDEV_UP, NULL) | |
3421 | : netdev_turn_flags_on(port->netdev, NETDEV_UP, NULL))) { | |
3422 | /* We tried to bring the port up or down, but it failed, so don't | |
3423 | * update the "down" bit. */ | |
9e1fd49b | 3424 | toggle &= ~OFPUTIL_PC_PORT_DOWN; |
064af421 | 3425 | } |
abe529af | 3426 | |
2a6f78e0 BP |
3427 | if (toggle) { |
3428 | enum ofputil_port_config old_config = port->pp.config; | |
3429 | port->pp.config ^= toggle; | |
abe529af | 3430 | port->ofproto->ofproto_class->port_reconfigured(port, old_config); |
2a6f78e0 BP |
3431 | connmgr_send_port_status(port->ofproto->connmgr, ofconn, &port->pp, |
3432 | OFPPR_MODIFY); | |
064af421 BP |
3433 | } |
3434 | } | |
3435 | ||
90bf1e07 | 3436 | static enum ofperr |
1c38055d JR |
3437 | port_mod_start(struct ofconn *ofconn, struct ofputil_port_mod *pm, |
3438 | struct ofport **port) | |
064af421 | 3439 | { |
64ff1d96 | 3440 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
1c38055d JR |
3441 | |
3442 | *port = ofproto_get_port(p, pm->port_no); | |
3443 | if (!*port) { | |
3444 | return OFPERR_OFPPMFC_BAD_PORT; | |
3445 | } | |
3446 | if (!eth_addr_equals((*port)->pp.hw_addr, pm->hw_addr)) { | |
3447 | return OFPERR_OFPPMFC_BAD_HW_ADDR; | |
3448 | } | |
3449 | return 0; | |
3450 | } | |
3451 | ||
3452 | static void | |
3453 | port_mod_finish(struct ofconn *ofconn, struct ofputil_port_mod *pm, | |
3454 | struct ofport *port) | |
3455 | { | |
3456 | update_port_config(ofconn, port, pm->config, pm->mask); | |
3457 | if (pm->advertise) { | |
3458 | netdev_set_advertisements(port->netdev, pm->advertise); | |
3459 | } | |
3460 | } | |
3461 | ||
3462 | static enum ofperr | |
3463 | handle_port_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
3464 | { | |
9e1fd49b | 3465 | struct ofputil_port_mod pm; |
064af421 | 3466 | struct ofport *port; |
9e1fd49b | 3467 | enum ofperr error; |
064af421 | 3468 | |
76589937 | 3469 | error = reject_slave_controller(ofconn); |
9deba63b BP |
3470 | if (error) { |
3471 | return error; | |
3472 | } | |
064af421 | 3473 | |
18cc69d9 | 3474 | error = ofputil_decode_port_mod(oh, &pm, false); |
9e1fd49b BP |
3475 | if (error) { |
3476 | return error; | |
3477 | } | |
3478 | ||
1c38055d JR |
3479 | error = port_mod_start(ofconn, &pm, &port); |
3480 | if (!error) { | |
3481 | port_mod_finish(ofconn, &pm, port); | |
064af421 | 3482 | } |
1c38055d | 3483 | return error; |
064af421 BP |
3484 | } |
3485 | ||
90bf1e07 | 3486 | static enum ofperr |
3269c562 | 3487 | handle_desc_stats_request(struct ofconn *ofconn, |
982697a4 | 3488 | const struct ofp_header *request) |
064af421 | 3489 | { |
061bfea4 BP |
3490 | static const char *default_mfr_desc = "Nicira, Inc."; |
3491 | static const char *default_hw_desc = "Open vSwitch"; | |
3492 | static const char *default_sw_desc = VERSION; | |
3493 | static const char *default_serial_desc = "None"; | |
3494 | static const char *default_dp_desc = "None"; | |
3495 | ||
64ff1d96 | 3496 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 BP |
3497 | struct ofp_desc_stats *ods; |
3498 | struct ofpbuf *msg; | |
3499 | ||
982697a4 BP |
3500 | msg = ofpraw_alloc_stats_reply(request, 0); |
3501 | ods = ofpbuf_put_zeros(msg, sizeof *ods); | |
061bfea4 BP |
3502 | ovs_strlcpy(ods->mfr_desc, p->mfr_desc ? p->mfr_desc : default_mfr_desc, |
3503 | sizeof ods->mfr_desc); | |
3504 | ovs_strlcpy(ods->hw_desc, p->hw_desc ? p->hw_desc : default_hw_desc, | |
3505 | sizeof ods->hw_desc); | |
3506 | ovs_strlcpy(ods->sw_desc, p->sw_desc ? p->sw_desc : default_sw_desc, | |
3507 | sizeof ods->sw_desc); | |
3508 | ovs_strlcpy(ods->serial_num, | |
3509 | p->serial_desc ? p->serial_desc : default_serial_desc, | |
3510 | sizeof ods->serial_num); | |
3511 | ovs_strlcpy(ods->dp_desc, p->dp_desc ? p->dp_desc : default_dp_desc, | |
3512 | sizeof ods->dp_desc); | |
b0421aa2 | 3513 | ofconn_send_reply(ofconn, msg); |
064af421 BP |
3514 | |
3515 | return 0; | |
3516 | } | |
3517 | ||
90bf1e07 | 3518 | static enum ofperr |
3269c562 | 3519 | handle_table_stats_request(struct ofconn *ofconn, |
982697a4 | 3520 | const struct ofp_header *request) |
064af421 | 3521 | { |
3c1bb396 BP |
3522 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
3523 | struct ofputil_table_features *features; | |
08d1e234 | 3524 | struct ofputil_table_stats *stats; |
3c1bb396 | 3525 | struct ofpbuf *reply; |
6c1491fb | 3526 | size_t i; |
064af421 | 3527 | |
3c1bb396 | 3528 | query_tables(ofproto, &features, &stats); |
254750ce | 3529 | |
3c1bb396 BP |
3530 | reply = ofputil_encode_table_stats_reply(request); |
3531 | for (i = 0; i < ofproto->n_tables; i++) { | |
3532 | if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) { | |
3533 | ofputil_append_table_stats_reply(reply, &stats[i], &features[i]); | |
254750ce BP |
3534 | } |
3535 | } | |
3c1bb396 | 3536 | ofconn_send_reply(ofconn, reply); |
254750ce | 3537 | |
3c1bb396 | 3538 | free(features); |
08d1e234 | 3539 | free(stats); |
307975da | 3540 | |
064af421 BP |
3541 | return 0; |
3542 | } | |
3543 | ||
3c4e10fb BP |
3544 | static enum ofperr |
3545 | handle_table_features_request(struct ofconn *ofconn, | |
3546 | const struct ofp_header *request) | |
3547 | { | |
3548 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
3549 | struct ofputil_table_features *features; | |
ca6ba700 | 3550 | struct ovs_list replies; |
3c4e10fb BP |
3551 | struct ofpbuf msg; |
3552 | size_t i; | |
3553 | ||
3554 | ofpbuf_use_const(&msg, request, ntohs(request->length)); | |
3555 | ofpraw_pull_assert(&msg); | |
6fd6ed71 | 3556 | if (msg.size || ofpmp_more(request)) { |
3c4e10fb BP |
3557 | return OFPERR_OFPTFFC_EPERM; |
3558 | } | |
3559 | ||
3560 | query_tables(ofproto, &features, NULL); | |
3561 | ||
3562 | ofpmp_init(&replies, request); | |
3563 | for (i = 0; i < ofproto->n_tables; i++) { | |
3564 | if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) { | |
3565 | ofputil_append_table_features_reply(&features[i], &replies); | |
3566 | } | |
3567 | } | |
3568 | ofconn_send_replies(ofconn, &replies); | |
3569 | ||
3570 | free(features); | |
3571 | ||
3572 | return 0; | |
3573 | } | |
3574 | ||
abaad8cf | 3575 | static void |
ca6ba700 | 3576 | append_port_stat(struct ofport *port, struct ovs_list *replies) |
abaad8cf | 3577 | { |
f8e4867e | 3578 | struct ofputil_port_stats ops = { .port_no = port->pp.port_no }; |
abaad8cf | 3579 | |
65e0be10 BP |
3580 | calc_duration(port->created, time_msec(), |
3581 | &ops.duration_sec, &ops.duration_nsec); | |
3582 | ||
d295e8e9 JP |
3583 | /* Intentionally ignore return value, since errors will set |
3584 | * 'stats' to all-1s, which is correct for OpenFlow, and | |
abaad8cf | 3585 | * netdev_get_stats() will log errors. */ |
f8e4867e SH |
3586 | ofproto_port_get_stats(port, &ops.stats); |
3587 | ||
3588 | ofputil_append_port_stat(replies, &ops); | |
abaad8cf JP |
3589 | } |
3590 | ||
70ae4f93 BP |
3591 | static void |
3592 | handle_port_request(struct ofconn *ofconn, | |
3593 | const struct ofp_header *request, ofp_port_t port_no, | |
ca6ba700 | 3594 | void (*cb)(struct ofport *, struct ovs_list *replies)) |
064af421 | 3595 | { |
70ae4f93 | 3596 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 | 3597 | struct ofport *port; |
ca6ba700 | 3598 | struct ovs_list replies; |
064af421 | 3599 | |
982697a4 | 3600 | ofpmp_init(&replies, request); |
7f05e7ab | 3601 | if (port_no != OFPP_ANY) { |
70ae4f93 | 3602 | port = ofproto_get_port(ofproto, port_no); |
abaad8cf | 3603 | if (port) { |
70ae4f93 | 3604 | cb(port, &replies); |
abaad8cf JP |
3605 | } |
3606 | } else { | |
70ae4f93 BP |
3607 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
3608 | cb(port, &replies); | |
abaad8cf | 3609 | } |
064af421 BP |
3610 | } |
3611 | ||
63f2140a | 3612 | ofconn_send_replies(ofconn, &replies); |
70ae4f93 BP |
3613 | } |
3614 | ||
3615 | static enum ofperr | |
3616 | handle_port_stats_request(struct ofconn *ofconn, | |
3617 | const struct ofp_header *request) | |
3618 | { | |
3619 | ofp_port_t port_no; | |
3620 | enum ofperr error; | |
3621 | ||
3622 | error = ofputil_decode_port_stats_request(request, &port_no); | |
3623 | if (!error) { | |
3624 | handle_port_request(ofconn, request, port_no, append_port_stat); | |
3625 | } | |
3626 | return error; | |
3627 | } | |
3628 | ||
3629 | static void | |
ca6ba700 | 3630 | append_port_desc(struct ofport *port, struct ovs_list *replies) |
70ae4f93 BP |
3631 | { |
3632 | ofputil_append_port_desc_stats_reply(&port->pp, replies); | |
064af421 BP |
3633 | } |
3634 | ||
2be393ed JP |
3635 | static enum ofperr |
3636 | handle_port_desc_stats_request(struct ofconn *ofconn, | |
982697a4 | 3637 | const struct ofp_header *request) |
2be393ed | 3638 | { |
70ae4f93 BP |
3639 | ofp_port_t port_no; |
3640 | enum ofperr error; | |
2be393ed | 3641 | |
70ae4f93 BP |
3642 | error = ofputil_decode_port_desc_stats_request(request, &port_no); |
3643 | if (!error) { | |
3644 | handle_port_request(ofconn, request, port_no, append_port_desc); | |
2be393ed | 3645 | } |
70ae4f93 | 3646 | return error; |
2be393ed JP |
3647 | } |
3648 | ||
98eaac36 JR |
3649 | static uint32_t |
3650 | hash_cookie(ovs_be64 cookie) | |
3651 | { | |
965607c8 | 3652 | return hash_uint64((OVS_FORCE uint64_t)cookie); |
98eaac36 JR |
3653 | } |
3654 | ||
3655 | static void | |
3656 | cookies_insert(struct ofproto *ofproto, struct rule *rule) | |
2c916028 | 3657 | OVS_REQUIRES(ofproto_mutex) |
98eaac36 JR |
3658 | { |
3659 | hindex_insert(&ofproto->cookies, &rule->cookie_node, | |
3660 | hash_cookie(rule->flow_cookie)); | |
3661 | } | |
3662 | ||
3663 | static void | |
3664 | cookies_remove(struct ofproto *ofproto, struct rule *rule) | |
2c916028 | 3665 | OVS_REQUIRES(ofproto_mutex) |
98eaac36 JR |
3666 | { |
3667 | hindex_remove(&ofproto->cookies, &rule->cookie_node); | |
3668 | } | |
3669 | ||
c6ebb8fb | 3670 | static void |
65e0be10 BP |
3671 | calc_duration(long long int start, long long int now, |
3672 | uint32_t *sec, uint32_t *nsec) | |
c6ebb8fb | 3673 | { |
f27f2134 | 3674 | long long int msecs = now - start; |
588cd7b5 BP |
3675 | *sec = msecs / 1000; |
3676 | *nsec = (msecs % 1000) * (1000 * 1000); | |
3677 | } | |
3678 | ||
48266274 | 3679 | /* Checks whether 'table_id' is 0xff or a valid table ID in 'ofproto'. Returns |
554764d1 SH |
3680 | * true if 'table_id' is OK, false otherwise. */ |
3681 | static bool | |
48266274 BP |
3682 | check_table_id(const struct ofproto *ofproto, uint8_t table_id) |
3683 | { | |
554764d1 | 3684 | return table_id == OFPTT_ALL || table_id < ofproto->n_tables; |
48266274 BP |
3685 | } |
3686 | ||
5c67e4af | 3687 | static struct oftable * |
d4ce8a49 | 3688 | next_visible_table(const struct ofproto *ofproto, uint8_t table_id) |
5c67e4af BP |
3689 | { |
3690 | struct oftable *table; | |
3691 | ||
3692 | for (table = &ofproto->tables[table_id]; | |
3693 | table < &ofproto->tables[ofproto->n_tables]; | |
3694 | table++) { | |
3695 | if (!(table->flags & OFTABLE_HIDDEN)) { | |
3696 | return table; | |
3697 | } | |
3698 | } | |
3699 | ||
3700 | return NULL; | |
3701 | } | |
3702 | ||
d0918789 | 3703 | static struct oftable * |
d4ce8a49 | 3704 | first_matching_table(const struct ofproto *ofproto, uint8_t table_id) |
064af421 | 3705 | { |
6c1491fb | 3706 | if (table_id == 0xff) { |
5c67e4af | 3707 | return next_visible_table(ofproto, 0); |
6c1491fb BP |
3708 | } else if (table_id < ofproto->n_tables) { |
3709 | return &ofproto->tables[table_id]; | |
a02e5331 | 3710 | } else { |
6c1491fb | 3711 | return NULL; |
a02e5331 | 3712 | } |
064af421 BP |
3713 | } |
3714 | ||
d0918789 | 3715 | static struct oftable * |
d4ce8a49 BP |
3716 | next_matching_table(const struct ofproto *ofproto, |
3717 | const struct oftable *table, uint8_t table_id) | |
6c1491fb | 3718 | { |
5c67e4af BP |
3719 | return (table_id == 0xff |
3720 | ? next_visible_table(ofproto, (table - ofproto->tables) + 1) | |
6c1491fb BP |
3721 | : NULL); |
3722 | } | |
3723 | ||
d0918789 | 3724 | /* Assigns TABLE to each oftable, in turn, that matches TABLE_ID in OFPROTO: |
6c1491fb BP |
3725 | * |
3726 | * - If TABLE_ID is 0xff, this iterates over every classifier table in | |
5c67e4af | 3727 | * OFPROTO, skipping tables marked OFTABLE_HIDDEN. |
6c1491fb BP |
3728 | * |
3729 | * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates | |
5c67e4af BP |
3730 | * only once, for that table. (This can be used to access tables marked |
3731 | * OFTABLE_HIDDEN.) | |
6c1491fb | 3732 | * |
48266274 BP |
3733 | * - Otherwise, TABLE_ID isn't valid for OFPROTO, so the loop won't be |
3734 | * entered at all. (Perhaps you should have validated TABLE_ID with | |
3735 | * check_table_id().) | |
6c1491fb BP |
3736 | * |
3737 | * All parameters are evaluated multiple times. | |
3738 | */ | |
d0918789 BP |
3739 | #define FOR_EACH_MATCHING_TABLE(TABLE, TABLE_ID, OFPROTO) \ |
3740 | for ((TABLE) = first_matching_table(OFPROTO, TABLE_ID); \ | |
3741 | (TABLE) != NULL; \ | |
3742 | (TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID)) | |
6c1491fb | 3743 | |
a9b22b7f BP |
3744 | /* Initializes 'criteria' in a straightforward way based on the other |
3745 | * parameters. | |
3746 | * | |
dd51dae2 BP |
3747 | * By default, the criteria include flows that are read-only, on the assumption |
3748 | * that the collected flows won't be modified. Call rule_criteria_require_rw() | |
3749 | * if flows will be modified. | |
3750 | * | |
a9b22b7f BP |
3751 | * For "loose" matching, the 'priority' parameter is unimportant and may be |
3752 | * supplied as 0. */ | |
3753 | static void | |
3754 | rule_criteria_init(struct rule_criteria *criteria, uint8_t table_id, | |
18721c4a JR |
3755 | const struct match *match, int priority, |
3756 | cls_version_t version, ovs_be64 cookie, | |
3757 | ovs_be64 cookie_mask, ofp_port_t out_port, | |
3758 | uint32_t out_group) | |
a9b22b7f BP |
3759 | { |
3760 | criteria->table_id = table_id; | |
2b7b1427 | 3761 | cls_rule_init(&criteria->cr, match, priority, version); |
a9b22b7f BP |
3762 | criteria->cookie = cookie; |
3763 | criteria->cookie_mask = cookie_mask; | |
3764 | criteria->out_port = out_port; | |
3765 | criteria->out_group = out_group; | |
dd51dae2 BP |
3766 | |
3767 | /* We ordinarily want to skip hidden rules, but there has to be a way for | |
3768 | * code internal to OVS to modify and delete them, so if the criteria | |
3769 | * specify a priority that can only be for a hidden flow, then allow hidden | |
3770 | * rules to be selected. (This doesn't allow OpenFlow clients to meddle | |
3771 | * with hidden flows because OpenFlow uses only a 16-bit field to specify | |
3772 | * priority.) */ | |
3773 | criteria->include_hidden = priority > UINT16_MAX; | |
3774 | ||
3775 | /* We assume that the criteria are being used to collect flows for reading | |
3776 | * but not modification. Thus, we should collect read-only flows. */ | |
3777 | criteria->include_readonly = true; | |
3778 | } | |
3779 | ||
3780 | /* By default, criteria initialized by rule_criteria_init() will match flows | |
3781 | * that are read-only, on the assumption that the collected flows won't be | |
3782 | * modified. Call this function to match only flows that are be modifiable. | |
3783 | * | |
3784 | * Specify 'can_write_readonly' as false in ordinary circumstances, true if the | |
3785 | * caller has special privileges that allow it to modify even "read-only" | |
3786 | * flows. */ | |
3787 | static void | |
3788 | rule_criteria_require_rw(struct rule_criteria *criteria, | |
3789 | bool can_write_readonly) | |
3790 | { | |
3791 | criteria->include_readonly = can_write_readonly; | |
a9b22b7f BP |
3792 | } |
3793 | ||
3794 | static void | |
3795 | rule_criteria_destroy(struct rule_criteria *criteria) | |
3796 | { | |
3797 | cls_rule_destroy(&criteria->cr); | |
3798 | } | |
3799 | ||
a8e547c1 BP |
3800 | void |
3801 | rule_collection_init(struct rule_collection *rules) | |
3802 | { | |
3803 | rules->rules = rules->stub; | |
3804 | rules->n = 0; | |
3805 | rules->capacity = ARRAY_SIZE(rules->stub); | |
3806 | } | |
3807 | ||
3808 | void | |
3809 | rule_collection_add(struct rule_collection *rules, struct rule *rule) | |
3810 | { | |
3811 | if (rules->n >= rules->capacity) { | |
3812 | size_t old_size, new_size; | |
3813 | ||
3814 | old_size = rules->capacity * sizeof *rules->rules; | |
3815 | rules->capacity *= 2; | |
3816 | new_size = rules->capacity * sizeof *rules->rules; | |
3817 | ||
3818 | if (rules->rules == rules->stub) { | |
3819 | rules->rules = xmalloc(new_size); | |
3820 | memcpy(rules->rules, rules->stub, old_size); | |
3821 | } else { | |
3822 | rules->rules = xrealloc(rules->rules, new_size); | |
3823 | } | |
3824 | } | |
3825 | ||
3826 | rules->rules[rules->n++] = rule; | |
3827 | } | |
3828 | ||
15aaf599 BP |
3829 | void |
3830 | rule_collection_ref(struct rule_collection *rules) | |
3831 | OVS_REQUIRES(ofproto_mutex) | |
3832 | { | |
3833 | size_t i; | |
3834 | ||
3835 | for (i = 0; i < rules->n; i++) { | |
3836 | ofproto_rule_ref(rules->rules[i]); | |
3837 | } | |
3838 | } | |
3839 | ||
3840 | void | |
3841 | rule_collection_unref(struct rule_collection *rules) | |
3842 | { | |
3843 | size_t i; | |
3844 | ||
3845 | for (i = 0; i < rules->n; i++) { | |
3846 | ofproto_rule_unref(rules->rules[i]); | |
3847 | } | |
3848 | } | |
3849 | ||
39c94593 JR |
3850 | /* Returns a NULL-terminated array of rule pointers, |
3851 | * destroys 'rules'. */ | |
3852 | static struct rule ** | |
3853 | rule_collection_detach(struct rule_collection *rules) | |
3854 | { | |
3855 | struct rule **rule_array; | |
3856 | ||
3857 | rule_collection_add(rules, NULL); | |
3858 | ||
3859 | if (rules->rules == rules->stub) { | |
3860 | rules->rules = xmemdup(rules->rules, rules->n * sizeof *rules->rules); | |
3861 | } | |
3862 | ||
3863 | rule_array = rules->rules; | |
3864 | rule_collection_init(rules); | |
3865 | ||
3866 | return rule_array; | |
3867 | } | |
3868 | ||
a8e547c1 BP |
3869 | void |
3870 | rule_collection_destroy(struct rule_collection *rules) | |
3871 | { | |
3872 | if (rules->rules != rules->stub) { | |
3873 | free(rules->rules); | |
3874 | } | |
bfd3dbf6 BP |
3875 | |
3876 | /* Make repeated destruction harmless. */ | |
3877 | rule_collection_init(rules); | |
a8e547c1 BP |
3878 | } |
3879 | ||
39c94593 JR |
3880 | /* Schedules postponed removal of rules, destroys 'rules'. */ |
3881 | static void | |
3882 | rule_collection_remove_postponed(struct rule_collection *rules) | |
3883 | OVS_REQUIRES(ofproto_mutex) | |
3884 | { | |
3885 | if (rules->n > 0) { | |
3886 | if (rules->n == 1) { | |
3887 | ovsrcu_postpone(remove_rule_rcu, rules->rules[0]); | |
3888 | } else { | |
3889 | ovsrcu_postpone(remove_rules_rcu, rule_collection_detach(rules)); | |
3890 | } | |
3891 | } | |
3892 | } | |
3893 | ||
dd51dae2 BP |
3894 | /* Checks whether 'rule' matches 'c' and, if so, adds it to 'rules'. This |
3895 | * function verifies most of the criteria in 'c' itself, but the caller must | |
3896 | * check 'c->cr' itself. | |
3897 | * | |
2b7b1427 | 3898 | * Rules that have already been marked for removal are not collected. |
ce59413f | 3899 | * |
dd51dae2 | 3900 | * Increments '*n_readonly' if 'rule' wasn't added because it's read-only (and |
b20f4073 BP |
3901 | * 'c' only includes modifiable rules). */ |
3902 | static void | |
a9b22b7f | 3903 | collect_rule(struct rule *rule, const struct rule_criteria *c, |
dd51dae2 | 3904 | struct rule_collection *rules, size_t *n_readonly) |
15aaf599 | 3905 | OVS_REQUIRES(ofproto_mutex) |
6c1d7642 | 3906 | { |
dd51dae2 BP |
3907 | if ((c->table_id == rule->table_id || c->table_id == 0xff) |
3908 | && ofproto_rule_has_out_port(rule, c->out_port) | |
3909 | && ofproto_rule_has_out_group(rule, c->out_group) | |
3910 | && !((rule->flow_cookie ^ c->cookie) & c->cookie_mask) | |
ce59413f | 3911 | && (!rule_is_hidden(rule) || c->include_hidden) |
2b7b1427 | 3912 | && cls_rule_visible_in_version(&rule->cr, c->cr.version)) { |
dd51dae2 | 3913 | /* Rule matches all the criteria... */ |
834fe5cb | 3914 | if (!rule_is_readonly(rule) || c->include_readonly) { |
dd51dae2 | 3915 | /* ...add it. */ |
a8e547c1 | 3916 | rule_collection_add(rules, rule); |
dd51dae2 BP |
3917 | } else { |
3918 | /* ...except it's read-only. */ | |
3919 | ++*n_readonly; | |
6c1d7642 | 3920 | } |
6c1d7642 BP |
3921 | } |
3922 | } | |
3923 | ||
a9b22b7f BP |
3924 | /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches |
3925 | * on classifiers rules are done in the "loose" way required for OpenFlow | |
3926 | * OFPFC_MODIFY and OFPFC_DELETE requests. Puts the selected rules on list | |
9ed18e46 BP |
3927 | * 'rules'. |
3928 | * | |
9ed18e46 | 3929 | * Returns 0 on success, otherwise an OpenFlow error code. */ |
90bf1e07 | 3930 | static enum ofperr |
a9b22b7f | 3931 | collect_rules_loose(struct ofproto *ofproto, |
a8e547c1 BP |
3932 | const struct rule_criteria *criteria, |
3933 | struct rule_collection *rules) | |
15aaf599 | 3934 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 3935 | { |
d0918789 | 3936 | struct oftable *table; |
554764d1 | 3937 | enum ofperr error = 0; |
dd51dae2 | 3938 | size_t n_readonly = 0; |
48266274 | 3939 | |
a8e547c1 BP |
3940 | rule_collection_init(rules); |
3941 | ||
554764d1 SH |
3942 | if (!check_table_id(ofproto, criteria->table_id)) { |
3943 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
a8e547c1 | 3944 | goto exit; |
48266274 | 3945 | } |
9ed18e46 | 3946 | |
b8266395 | 3947 | if (criteria->cookie_mask == OVS_BE64_MAX) { |
98eaac36 JR |
3948 | struct rule *rule; |
3949 | ||
a9b22b7f BP |
3950 | HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node, |
3951 | hash_cookie(criteria->cookie), | |
98eaac36 | 3952 | &ofproto->cookies) { |
a9b22b7f | 3953 | if (cls_rule_is_loose_match(&rule->cr, &criteria->cr.match)) { |
b20f4073 | 3954 | collect_rule(rule, criteria, rules, &n_readonly); |
98eaac36 JR |
3955 | } |
3956 | } | |
6c1d7642 | 3957 | } else { |
a9b22b7f | 3958 | FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) { |
6c1d7642 | 3959 | struct rule *rule; |
9ed18e46 | 3960 | |
5f0476ce | 3961 | CLS_FOR_EACH_TARGET (rule, cr, &table->cls, &criteria->cr) { |
b20f4073 | 3962 | collect_rule(rule, criteria, rules, &n_readonly); |
9ed18e46 BP |
3963 | } |
3964 | } | |
3965 | } | |
48d28ac1 | 3966 | |
a8e547c1 | 3967 | exit: |
dd51dae2 BP |
3968 | if (!error && !rules->n && n_readonly) { |
3969 | /* We didn't find any rules to modify. We did find some read-only | |
3970 | * rules that we're not allowed to modify, so report that. */ | |
3971 | error = OFPERR_OFPBRC_EPERM; | |
3972 | } | |
a8e547c1 BP |
3973 | if (error) { |
3974 | rule_collection_destroy(rules); | |
3975 | } | |
48d28ac1 | 3976 | return error; |
9ed18e46 BP |
3977 | } |
3978 | ||
a9b22b7f BP |
3979 | /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches |
3980 | * on classifiers rules are done in the "strict" way required for OpenFlow | |
3981 | * OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests. Puts the selected | |
3982 | * rules on list 'rules'. | |
9ed18e46 | 3983 | * |
9ed18e46 | 3984 | * Returns 0 on success, otherwise an OpenFlow error code. */ |
90bf1e07 | 3985 | static enum ofperr |
a9b22b7f | 3986 | collect_rules_strict(struct ofproto *ofproto, |
a8e547c1 BP |
3987 | const struct rule_criteria *criteria, |
3988 | struct rule_collection *rules) | |
15aaf599 | 3989 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 3990 | { |
d0918789 | 3991 | struct oftable *table; |
dd51dae2 | 3992 | size_t n_readonly = 0; |
d51c8b71 | 3993 | enum ofperr error = 0; |
48266274 | 3994 | |
a8e547c1 BP |
3995 | rule_collection_init(rules); |
3996 | ||
554764d1 SH |
3997 | if (!check_table_id(ofproto, criteria->table_id)) { |
3998 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
a8e547c1 | 3999 | goto exit; |
48266274 | 4000 | } |
9ed18e46 | 4001 | |
b8266395 | 4002 | if (criteria->cookie_mask == OVS_BE64_MAX) { |
98eaac36 JR |
4003 | struct rule *rule; |
4004 | ||
a9b22b7f BP |
4005 | HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node, |
4006 | hash_cookie(criteria->cookie), | |
98eaac36 | 4007 | &ofproto->cookies) { |
a9b22b7f | 4008 | if (cls_rule_equal(&rule->cr, &criteria->cr)) { |
b20f4073 | 4009 | collect_rule(rule, criteria, rules, &n_readonly); |
98eaac36 JR |
4010 | } |
4011 | } | |
6c1d7642 | 4012 | } else { |
a9b22b7f | 4013 | FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) { |
6c1d7642 | 4014 | struct rule *rule; |
9ed18e46 | 4015 | |
a9b22b7f BP |
4016 | rule = rule_from_cls_rule(classifier_find_rule_exactly( |
4017 | &table->cls, &criteria->cr)); | |
6c1d7642 | 4018 | if (rule) { |
b20f4073 | 4019 | collect_rule(rule, criteria, rules, &n_readonly); |
9ed18e46 BP |
4020 | } |
4021 | } | |
4022 | } | |
48d28ac1 | 4023 | |
a8e547c1 | 4024 | exit: |
b20f4073 BP |
4025 | if (!error && !rules->n && n_readonly) { |
4026 | /* We didn't find any rules to modify. We did find some read-only | |
4027 | * rules that we're not allowed to modify, so report that. */ | |
4028 | error = OFPERR_OFPBRC_EPERM; | |
4029 | } | |
a8e547c1 BP |
4030 | if (error) { |
4031 | rule_collection_destroy(rules); | |
4032 | } | |
6c1d7642 | 4033 | return error; |
9ed18e46 BP |
4034 | } |
4035 | ||
f27f2134 BP |
4036 | /* Returns 'age_ms' (a duration in milliseconds), converted to seconds and |
4037 | * forced into the range of a uint16_t. */ | |
4038 | static int | |
4039 | age_secs(long long int age_ms) | |
4040 | { | |
4041 | return (age_ms < 0 ? 0 | |
4042 | : age_ms >= UINT16_MAX * 1000 ? UINT16_MAX | |
4043 | : (unsigned int) age_ms / 1000); | |
4044 | } | |
4045 | ||
90bf1e07 | 4046 | static enum ofperr |
63f2140a | 4047 | handle_flow_stats_request(struct ofconn *ofconn, |
982697a4 | 4048 | const struct ofp_header *request) |
15aaf599 | 4049 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 4050 | { |
64ff1d96 | 4051 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 4052 | struct ofputil_flow_stats_request fsr; |
a9b22b7f | 4053 | struct rule_criteria criteria; |
a8e547c1 | 4054 | struct rule_collection rules; |
ca6ba700 | 4055 | struct ovs_list replies; |
90bf1e07 | 4056 | enum ofperr error; |
a8e547c1 | 4057 | size_t i; |
09246b99 | 4058 | |
982697a4 | 4059 | error = ofputil_decode_flow_stats_request(&fsr, request); |
09246b99 BP |
4060 | if (error) { |
4061 | return error; | |
4062 | } | |
4063 | ||
2b7b1427 JR |
4064 | rule_criteria_init(&criteria, fsr.table_id, &fsr.match, 0, CLS_MAX_VERSION, |
4065 | fsr.cookie, fsr.cookie_mask, fsr.out_port, | |
4066 | fsr.out_group); | |
15aaf599 BP |
4067 | |
4068 | ovs_mutex_lock(&ofproto_mutex); | |
a9b22b7f BP |
4069 | error = collect_rules_loose(ofproto, &criteria, &rules); |
4070 | rule_criteria_destroy(&criteria); | |
15aaf599 BP |
4071 | if (!error) { |
4072 | rule_collection_ref(&rules); | |
4073 | } | |
4074 | ovs_mutex_unlock(&ofproto_mutex); | |
4075 | ||
9ed18e46 BP |
4076 | if (error) { |
4077 | return error; | |
4078 | } | |
5ecc9d81 | 4079 | |
982697a4 | 4080 | ofpmp_init(&replies, request); |
a8e547c1 BP |
4081 | for (i = 0; i < rules.n; i++) { |
4082 | struct rule *rule = rules.rules[i]; | |
f27f2134 | 4083 | long long int now = time_msec(); |
9ed18e46 | 4084 | struct ofputil_flow_stats fs; |
15aaf599 | 4085 | long long int created, used, modified; |
dc723c44 | 4086 | const struct rule_actions *actions; |
15aaf599 | 4087 | enum ofputil_flow_mod_flags flags; |
a3779dbc | 4088 | |
d10976b7 | 4089 | ovs_mutex_lock(&rule->mutex); |
15aaf599 | 4090 | fs.cookie = rule->flow_cookie; |
a3779dbc EJ |
4091 | fs.idle_timeout = rule->idle_timeout; |
4092 | fs.hard_timeout = rule->hard_timeout; | |
ca26eb44 | 4093 | fs.importance = rule->importance; |
15aaf599 | 4094 | created = rule->created; |
15aaf599 | 4095 | modified = rule->modified; |
06a0f3e2 | 4096 | actions = rule_get_actions(rule); |
15aaf599 | 4097 | flags = rule->flags; |
d10976b7 | 4098 | ovs_mutex_unlock(&rule->mutex); |
a3779dbc | 4099 | |
dc437090 JR |
4100 | ofproto->ofproto_class->rule_get_stats(rule, &fs.packet_count, |
4101 | &fs.byte_count, &used); | |
4102 | ||
15aaf599 BP |
4103 | minimatch_expand(&rule->cr.match, &fs.match); |
4104 | fs.table_id = rule->table_id; | |
4105 | calc_duration(created, now, &fs.duration_sec, &fs.duration_nsec); | |
4106 | fs.priority = rule->cr.priority; | |
4107 | fs.idle_age = age_secs(now - used); | |
4108 | fs.hard_age = age_secs(now - modified); | |
15aaf599 BP |
4109 | fs.ofpacts = actions->ofpacts; |
4110 | fs.ofpacts_len = actions->ofpacts_len; | |
3f517bcd | 4111 | |
15aaf599 | 4112 | fs.flags = flags; |
9ed18e46 | 4113 | ofputil_append_flow_stats_reply(&fs, &replies); |
3c4486a5 | 4114 | } |
15aaf599 BP |
4115 | |
4116 | rule_collection_unref(&rules); | |
a8e547c1 BP |
4117 | rule_collection_destroy(&rules); |
4118 | ||
63f2140a | 4119 | ofconn_send_replies(ofconn, &replies); |
5ecc9d81 | 4120 | |
09246b99 BP |
4121 | return 0; |
4122 | } | |
4123 | ||
4f2cad2c | 4124 | static void |
3394b5b6 | 4125 | flow_stats_ds(struct rule *rule, struct ds *results) |
4f2cad2c | 4126 | { |
4f2cad2c | 4127 | uint64_t packet_count, byte_count; |
dc723c44 | 4128 | const struct rule_actions *actions; |
dc437090 | 4129 | long long int created, used; |
4f2cad2c | 4130 | |
dc437090 JR |
4131 | rule->ofproto->ofproto_class->rule_get_stats(rule, &packet_count, |
4132 | &byte_count, &used); | |
4f2cad2c | 4133 | |
15aaf599 | 4134 | ovs_mutex_lock(&rule->mutex); |
06a0f3e2 | 4135 | actions = rule_get_actions(rule); |
15aaf599 BP |
4136 | created = rule->created; |
4137 | ovs_mutex_unlock(&rule->mutex); | |
4138 | ||
6c1491fb BP |
4139 | if (rule->table_id != 0) { |
4140 | ds_put_format(results, "table_id=%"PRIu8", ", rule->table_id); | |
4141 | } | |
15aaf599 | 4142 | ds_put_format(results, "duration=%llds, ", (time_msec() - created) / 1000); |
4f2cad2c JP |
4143 | ds_put_format(results, "n_packets=%"PRIu64", ", packet_count); |
4144 | ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count); | |
cb833cf6 | 4145 | cls_rule_format(&rule->cr, results); |
a5df0e72 | 4146 | ds_put_char(results, ','); |
15aaf599 | 4147 | |
455ecd77 | 4148 | ds_put_cstr(results, "actions="); |
15aaf599 BP |
4149 | ofpacts_format(actions->ofpacts, actions->ofpacts_len, results); |
4150 | ||
4f2cad2c JP |
4151 | ds_put_cstr(results, "\n"); |
4152 | } | |
4153 | ||
d295e8e9 | 4154 | /* Adds a pretty-printed description of all flows to 'results', including |
ee8b231c | 4155 | * hidden flows (e.g., set up by in-band control). */ |
4f2cad2c JP |
4156 | void |
4157 | ofproto_get_all_flows(struct ofproto *p, struct ds *results) | |
4158 | { | |
d0918789 | 4159 | struct oftable *table; |
6c1491fb | 4160 | |
d0918789 | 4161 | OFPROTO_FOR_EACH_TABLE (table, p) { |
6c1491fb | 4162 | struct rule *rule; |
064af421 | 4163 | |
5f0476ce | 4164 | CLS_FOR_EACH (rule, cr, &table->cls) { |
6c1491fb BP |
4165 | flow_stats_ds(rule, results); |
4166 | } | |
064af421 | 4167 | } |
064af421 BP |
4168 | } |
4169 | ||
b5827b24 BP |
4170 | /* Obtains the NetFlow engine type and engine ID for 'ofproto' into |
4171 | * '*engine_type' and '*engine_id', respectively. */ | |
4172 | void | |
4173 | ofproto_get_netflow_ids(const struct ofproto *ofproto, | |
4174 | uint8_t *engine_type, uint8_t *engine_id) | |
4175 | { | |
abe529af | 4176 | ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id); |
b5827b24 BP |
4177 | } |
4178 | ||
8f5514fe AW |
4179 | /* Checks the status change of CFM on 'ofport'. |
4180 | * | |
4181 | * Returns true if 'ofproto_class' does not support 'cfm_status_changed'. */ | |
4182 | bool | |
4183 | ofproto_port_cfm_status_changed(struct ofproto *ofproto, ofp_port_t ofp_port) | |
4184 | { | |
4185 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
4186 | return (ofport && ofproto->ofproto_class->cfm_status_changed | |
4187 | ? ofproto->ofproto_class->cfm_status_changed(ofport) | |
4188 | : true); | |
4189 | } | |
4190 | ||
88bf179a AW |
4191 | /* Checks the status of CFM configured on 'ofp_port' within 'ofproto'. |
4192 | * Returns 0 if the port's CFM status was successfully stored into | |
4193 | * '*status'. Returns positive errno if the port did not have CFM | |
8f5514fe | 4194 | * configured. |
9a9e3786 | 4195 | * |
88bf179a AW |
4196 | * The caller must provide and own '*status', and must free 'status->rmps'. |
4197 | * '*status' is indeterminate if the return value is non-zero. */ | |
4198 | int | |
4e022ec0 | 4199 | ofproto_port_get_cfm_status(const struct ofproto *ofproto, ofp_port_t ofp_port, |
685acfd9 | 4200 | struct cfm_status *status) |
3967a833 MM |
4201 | { |
4202 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
88bf179a AW |
4203 | return (ofport && ofproto->ofproto_class->get_cfm_status |
4204 | ? ofproto->ofproto_class->get_cfm_status(ofport, status) | |
4205 | : EOPNOTSUPP); | |
3967a833 MM |
4206 | } |
4207 | ||
90bf1e07 | 4208 | static enum ofperr |
76c93b22 | 4209 | handle_aggregate_stats_request(struct ofconn *ofconn, |
982697a4 | 4210 | const struct ofp_header *oh) |
15aaf599 | 4211 | OVS_EXCLUDED(ofproto_mutex) |
27d34fce | 4212 | { |
76c93b22 | 4213 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 4214 | struct ofputil_flow_stats_request request; |
76c93b22 | 4215 | struct ofputil_aggregate_stats stats; |
5e9d0469 | 4216 | bool unknown_packets, unknown_bytes; |
a9b22b7f | 4217 | struct rule_criteria criteria; |
a8e547c1 | 4218 | struct rule_collection rules; |
76c93b22 | 4219 | struct ofpbuf *reply; |
90bf1e07 | 4220 | enum ofperr error; |
a8e547c1 | 4221 | size_t i; |
27d34fce | 4222 | |
982697a4 | 4223 | error = ofputil_decode_flow_stats_request(&request, oh); |
76c93b22 BP |
4224 | if (error) { |
4225 | return error; | |
4226 | } | |
5ecc9d81 | 4227 | |
a9b22b7f | 4228 | rule_criteria_init(&criteria, request.table_id, &request.match, 0, |
2b7b1427 | 4229 | CLS_MAX_VERSION, request.cookie, request.cookie_mask, |
a9b22b7f | 4230 | request.out_port, request.out_group); |
15aaf599 BP |
4231 | |
4232 | ovs_mutex_lock(&ofproto_mutex); | |
a9b22b7f BP |
4233 | error = collect_rules_loose(ofproto, &criteria, &rules); |
4234 | rule_criteria_destroy(&criteria); | |
15aaf599 BP |
4235 | if (!error) { |
4236 | rule_collection_ref(&rules); | |
4237 | } | |
4238 | ovs_mutex_unlock(&ofproto_mutex); | |
4239 | ||
9ed18e46 BP |
4240 | if (error) { |
4241 | return error; | |
4242 | } | |
3c4486a5 | 4243 | |
9ed18e46 | 4244 | memset(&stats, 0, sizeof stats); |
5e9d0469 | 4245 | unknown_packets = unknown_bytes = false; |
a8e547c1 BP |
4246 | for (i = 0; i < rules.n; i++) { |
4247 | struct rule *rule = rules.rules[i]; | |
9ed18e46 BP |
4248 | uint64_t packet_count; |
4249 | uint64_t byte_count; | |
dc437090 | 4250 | long long int used; |
5ecc9d81 | 4251 | |
9ed18e46 | 4252 | ofproto->ofproto_class->rule_get_stats(rule, &packet_count, |
dc437090 | 4253 | &byte_count, &used); |
5ecc9d81 | 4254 | |
5e9d0469 BP |
4255 | if (packet_count == UINT64_MAX) { |
4256 | unknown_packets = true; | |
4257 | } else { | |
4258 | stats.packet_count += packet_count; | |
4259 | } | |
4260 | ||
4261 | if (byte_count == UINT64_MAX) { | |
4262 | unknown_bytes = true; | |
4263 | } else { | |
4264 | stats.byte_count += byte_count; | |
4265 | } | |
4266 | ||
9ed18e46 | 4267 | stats.flow_count++; |
3c4486a5 | 4268 | } |
5e9d0469 BP |
4269 | if (unknown_packets) { |
4270 | stats.packet_count = UINT64_MAX; | |
4271 | } | |
4272 | if (unknown_bytes) { | |
4273 | stats.byte_count = UINT64_MAX; | |
4274 | } | |
27d34fce | 4275 | |
15aaf599 | 4276 | rule_collection_unref(&rules); |
a8e547c1 BP |
4277 | rule_collection_destroy(&rules); |
4278 | ||
982697a4 | 4279 | reply = ofputil_encode_aggregate_stats_reply(&stats, oh); |
76c93b22 | 4280 | ofconn_send_reply(ofconn, reply); |
09246b99 BP |
4281 | |
4282 | return 0; | |
4283 | } | |
4284 | ||
c1c9c9c4 | 4285 | struct queue_stats_cbdata { |
ca0f572c | 4286 | struct ofport *ofport; |
ca6ba700 | 4287 | struct ovs_list replies; |
6dc34a0d | 4288 | long long int now; |
c1c9c9c4 BP |
4289 | }; |
4290 | ||
4291 | static void | |
db9220c3 | 4292 | put_queue_stats(struct queue_stats_cbdata *cbdata, uint32_t queue_id, |
c1c9c9c4 BP |
4293 | const struct netdev_queue_stats *stats) |
4294 | { | |
6dc34a0d | 4295 | struct ofputil_queue_stats oqs; |
c1c9c9c4 | 4296 | |
6dc34a0d BP |
4297 | oqs.port_no = cbdata->ofport->pp.port_no; |
4298 | oqs.queue_id = queue_id; | |
4299 | oqs.tx_bytes = stats->tx_bytes; | |
4300 | oqs.tx_packets = stats->tx_packets; | |
4301 | oqs.tx_errors = stats->tx_errors; | |
4302 | if (stats->created != LLONG_MIN) { | |
4303 | calc_duration(stats->created, cbdata->now, | |
4304 | &oqs.duration_sec, &oqs.duration_nsec); | |
4305 | } else { | |
4306 | oqs.duration_sec = oqs.duration_nsec = UINT32_MAX; | |
4307 | } | |
64626975 | 4308 | ofputil_append_queue_stat(&cbdata->replies, &oqs); |
c1c9c9c4 BP |
4309 | } |
4310 | ||
4311 | static void | |
db9220c3 | 4312 | handle_queue_stats_dump_cb(uint32_t queue_id, |
c1c9c9c4 BP |
4313 | struct netdev_queue_stats *stats, |
4314 | void *cbdata_) | |
4315 | { | |
4316 | struct queue_stats_cbdata *cbdata = cbdata_; | |
4317 | ||
4318 | put_queue_stats(cbdata, queue_id, stats); | |
4319 | } | |
4320 | ||
0414d158 | 4321 | static enum ofperr |
ca0f572c | 4322 | handle_queue_stats_for_port(struct ofport *port, uint32_t queue_id, |
c1c9c9c4 BP |
4323 | struct queue_stats_cbdata *cbdata) |
4324 | { | |
ca0f572c | 4325 | cbdata->ofport = port; |
c1c9c9c4 BP |
4326 | if (queue_id == OFPQ_ALL) { |
4327 | netdev_dump_queue_stats(port->netdev, | |
4328 | handle_queue_stats_dump_cb, cbdata); | |
4329 | } else { | |
4330 | struct netdev_queue_stats stats; | |
4331 | ||
1ac788f6 BP |
4332 | if (!netdev_get_queue_stats(port->netdev, queue_id, &stats)) { |
4333 | put_queue_stats(cbdata, queue_id, &stats); | |
0414d158 BP |
4334 | } else { |
4335 | return OFPERR_OFPQOFC_BAD_QUEUE; | |
1ac788f6 | 4336 | } |
c1c9c9c4 | 4337 | } |
0414d158 | 4338 | return 0; |
c1c9c9c4 BP |
4339 | } |
4340 | ||
90bf1e07 | 4341 | static enum ofperr |
63f2140a | 4342 | handle_queue_stats_request(struct ofconn *ofconn, |
982697a4 | 4343 | const struct ofp_header *rq) |
c1c9c9c4 | 4344 | { |
64ff1d96 | 4345 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
c1c9c9c4 | 4346 | struct queue_stats_cbdata cbdata; |
0414d158 | 4347 | struct ofport *port; |
0414d158 | 4348 | enum ofperr error; |
64626975 | 4349 | struct ofputil_queue_stats_request oqsr; |
c1c9c9c4 | 4350 | |
c1c9c9c4 BP |
4351 | COVERAGE_INC(ofproto_queue_req); |
4352 | ||
982697a4 | 4353 | ofpmp_init(&cbdata.replies, rq); |
6dc34a0d | 4354 | cbdata.now = time_msec(); |
c1c9c9c4 | 4355 | |
64626975 SH |
4356 | error = ofputil_decode_queue_stats_request(rq, &oqsr); |
4357 | if (error) { | |
4358 | return error; | |
4359 | } | |
4360 | ||
7f05e7ab | 4361 | if (oqsr.port_no == OFPP_ANY) { |
0414d158 | 4362 | error = OFPERR_OFPQOFC_BAD_QUEUE; |
4e8e4213 | 4363 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
64626975 | 4364 | if (!handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata)) { |
0414d158 BP |
4365 | error = 0; |
4366 | } | |
c1c9c9c4 | 4367 | } |
0414d158 | 4368 | } else { |
64626975 | 4369 | port = ofproto_get_port(ofproto, oqsr.port_no); |
0414d158 | 4370 | error = (port |
64626975 | 4371 | ? handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata) |
0414d158 BP |
4372 | : OFPERR_OFPQOFC_BAD_PORT); |
4373 | } | |
4374 | if (!error) { | |
4375 | ofconn_send_replies(ofconn, &cbdata.replies); | |
c1c9c9c4 | 4376 | } else { |
63f2140a | 4377 | ofpbuf_list_delete(&cbdata.replies); |
c1c9c9c4 | 4378 | } |
c1c9c9c4 | 4379 | |
0414d158 | 4380 | return error; |
c1c9c9c4 | 4381 | } |
7ee20df1 | 4382 | |
2e31a9b8 | 4383 | static enum ofperr |
6787a49f | 4384 | evict_rules_from_table(struct oftable *table) |
15aaf599 | 4385 | OVS_REQUIRES(ofproto_mutex) |
2e31a9b8 | 4386 | { |
802f84ff JR |
4387 | enum ofperr error = 0; |
4388 | struct rule_collection rules; | |
6787a49f | 4389 | unsigned int count = table->n_flows; |
802f84ff JR |
4390 | unsigned int max_flows = table->max_flows; |
4391 | ||
4392 | rule_collection_init(&rules); | |
4393 | ||
4394 | while (count-- > max_flows) { | |
2e31a9b8 | 4395 | struct rule *rule; |
8037acb4 | 4396 | |
2e31a9b8 | 4397 | if (!choose_rule_to_evict(table, &rule)) { |
802f84ff JR |
4398 | error = OFPERR_OFPFMFC_TABLE_FULL; |
4399 | break; | |
2e31a9b8 | 4400 | } else { |
802f84ff JR |
4401 | eviction_group_remove_rule(rule); |
4402 | rule_collection_add(&rules, rule); | |
2e31a9b8 | 4403 | } |
8037acb4 | 4404 | } |
802f84ff | 4405 | delete_flows__(&rules, OFPRR_EVICTION, NULL); |
2e31a9b8 | 4406 | |
802f84ff | 4407 | return error; |
8037acb4 BP |
4408 | } |
4409 | ||
18080541 BP |
4410 | static void |
4411 | get_conjunctions(const struct ofputil_flow_mod *fm, | |
4412 | struct cls_conjunction **conjsp, size_t *n_conjsp) | |
4413 | OVS_REQUIRES(ofproto_mutex) | |
4414 | { | |
4415 | struct cls_conjunction *conjs = NULL; | |
4416 | int n_conjs = 0; | |
4417 | ||
f08e39dd BP |
4418 | const struct ofpact *ofpact; |
4419 | OFPACT_FOR_EACH (ofpact, fm->ofpacts, fm->ofpacts_len) { | |
4420 | if (ofpact->type == OFPACT_CONJUNCTION) { | |
18080541 | 4421 | n_conjs++; |
f08e39dd BP |
4422 | } else if (ofpact->type != OFPACT_NOTE) { |
4423 | /* "conjunction" may appear with "note" actions but not with any | |
4424 | * other type of actions. */ | |
4425 | ovs_assert(!n_conjs); | |
4426 | break; | |
18080541 | 4427 | } |
f08e39dd BP |
4428 | } |
4429 | if (n_conjs) { | |
4430 | int i = 0; | |
18080541 BP |
4431 | |
4432 | conjs = xzalloc(n_conjs * sizeof *conjs); | |
18080541 | 4433 | OFPACT_FOR_EACH (ofpact, fm->ofpacts, fm->ofpacts_len) { |
f08e39dd BP |
4434 | if (ofpact->type == OFPACT_CONJUNCTION) { |
4435 | struct ofpact_conjunction *oc = ofpact_get_CONJUNCTION(ofpact); | |
4436 | conjs[i].clause = oc->clause; | |
4437 | conjs[i].n_clauses = oc->n_clauses; | |
4438 | conjs[i].id = oc->id; | |
4439 | i++; | |
4440 | } | |
18080541 BP |
4441 | } |
4442 | } | |
4443 | ||
4444 | *conjsp = conjs; | |
4445 | *n_conjsp = n_conjs; | |
4446 | } | |
4447 | ||
1f42be1c JR |
4448 | /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT |
4449 | * in which no matching flow already exists in the flow table. | |
4450 | * | |
4451 | * Adds the flow specified by 'fm', to the ofproto's flow table. Returns 0 on | |
4452 | * success, or an OpenFlow error code on failure. | |
4453 | * | |
4454 | * On successful return the caller must complete the operation either by | |
4455 | * calling add_flow_finish(), or add_flow_revert() if the operation needs to | |
4456 | * be reverted. | |
4457 | * | |
4458 | * The caller retains ownership of 'fm->ofpacts'. */ | |
90bf1e07 | 4459 | static enum ofperr |
4fcb2083 | 4460 | add_flow_start(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
39c94593 | 4461 | struct rule **old_rule, struct rule **new_rule) |
15aaf599 | 4462 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 4463 | { |
d0918789 | 4464 | struct oftable *table; |
8037acb4 | 4465 | struct cls_rule cr; |
064af421 | 4466 | struct rule *rule; |
5a361239 | 4467 | uint8_t table_id; |
39c94593 JR |
4468 | struct cls_conjunction *conjs; |
4469 | size_t n_conjs; | |
4470 | enum ofperr error; | |
064af421 | 4471 | |
554764d1 SH |
4472 | if (!check_table_id(ofproto, fm->table_id)) { |
4473 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
48266274 BP |
4474 | return error; |
4475 | } | |
4476 | ||
7ee20df1 BP |
4477 | /* Pick table. */ |
4478 | if (fm->table_id == 0xff) { | |
13521ff5 | 4479 | if (ofproto->ofproto_class->rule_choose_table) { |
81a76618 BP |
4480 | error = ofproto->ofproto_class->rule_choose_table(ofproto, |
4481 | &fm->match, | |
7ee20df1 BP |
4482 | &table_id); |
4483 | if (error) { | |
4484 | return error; | |
4485 | } | |
cb22974d | 4486 | ovs_assert(table_id < ofproto->n_tables); |
7ee20df1 | 4487 | } else { |
5a361239 | 4488 | table_id = 0; |
7ee20df1 BP |
4489 | } |
4490 | } else if (fm->table_id < ofproto->n_tables) { | |
5a361239 | 4491 | table_id = fm->table_id; |
7ee20df1 | 4492 | } else { |
c22c56bd | 4493 | return OFPERR_OFPBRC_BAD_TABLE_ID; |
064af421 BP |
4494 | } |
4495 | ||
5a361239 | 4496 | table = &ofproto->tables[table_id]; |
834fe5cb BP |
4497 | if (table->flags & OFTABLE_READONLY |
4498 | && !(fm->flags & OFPUTIL_FF_NO_READONLY)) { | |
5c67e4af BP |
4499 | return OFPERR_OFPBRC_EPERM; |
4500 | } | |
4501 | ||
c84d8691 JR |
4502 | if (!(fm->flags & OFPUTIL_FF_HIDDEN_FIELDS) |
4503 | && !match_has_default_hidden_fields(&fm->match)) { | |
4504 | VLOG_WARN_RL(&rl, "%s: (add_flow) only internal flows can set " | |
4505 | "non-default values to hidden fields", ofproto->name); | |
4506 | return OFPERR_OFPBRC_EPERM; | |
adcf00ba AZ |
4507 | } |
4508 | ||
39c94593 | 4509 | cls_rule_init(&cr, &fm->match, fm->priority, ofproto->tables_version + 1); |
8037acb4 | 4510 | |
1f42be1c | 4511 | /* Check for the existence of an identical rule. |
2b7b1427 | 4512 | * This will not return rules earlier marked for removal. */ |
8037acb4 | 4513 | rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls, &cr)); |
39c94593 JR |
4514 | *old_rule = rule; |
4515 | if (!rule) { | |
c84d8691 JR |
4516 | /* Check for overlap, if requested. */ |
4517 | if (fm->flags & OFPUTIL_FF_CHECK_OVERLAP | |
4518 | && classifier_rule_overlaps(&table->cls, &cr)) { | |
4519 | cls_rule_destroy(&cr); | |
4520 | return OFPERR_OFPFMFC_OVERLAP; | |
dd27be82 | 4521 | } |
b277c7cc | 4522 | |
c84d8691 | 4523 | /* If necessary, evict an existing rule to clear out space. */ |
6787a49f JR |
4524 | if (table->n_flows >= table->max_flows) { |
4525 | if (!choose_rule_to_evict(table, &rule)) { | |
4526 | error = OFPERR_OFPFMFC_TABLE_FULL; | |
4527 | cls_rule_destroy(&cr); | |
4528 | return error; | |
4529 | } | |
4530 | eviction_group_remove_rule(rule); | |
4531 | /* Marks '*old_rule' as an evicted rule rather than replaced rule. | |
4532 | */ | |
4533 | fm->delete_reason = OFPRR_EVICTION; | |
4534 | *old_rule = rule; | |
c09f755d | 4535 | } |
39c94593 JR |
4536 | } else { |
4537 | fm->modify_cookie = true; | |
4538 | } | |
81a76618 | 4539 | |
39c94593 JR |
4540 | /* Allocate new rule. */ |
4541 | error = replace_rule_create(ofproto, fm, &cr, table - ofproto->tables, | |
4542 | rule, new_rule); | |
4543 | if (error) { | |
4544 | return error; | |
064af421 | 4545 | } |
8037acb4 | 4546 | |
39c94593 JR |
4547 | get_conjunctions(fm, &conjs, &n_conjs); |
4548 | replace_rule_start(ofproto, rule, *new_rule, conjs, n_conjs); | |
4549 | free(conjs); | |
4550 | ||
c84d8691 JR |
4551 | return 0; |
4552 | } | |
1ebeaaa7 | 4553 | |
6787a49f | 4554 | /* Revert the effects of add_flow_start(). */ |
1f42be1c | 4555 | static void |
6787a49f JR |
4556 | add_flow_revert(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4557 | struct rule *old_rule, struct rule *new_rule) | |
1f42be1c JR |
4558 | OVS_REQUIRES(ofproto_mutex) |
4559 | { | |
6787a49f JR |
4560 | if (old_rule && fm->delete_reason == OFPRR_EVICTION) { |
4561 | /* Revert the eviction. */ | |
4562 | eviction_group_add_rule(old_rule); | |
4563 | } | |
4564 | ||
39c94593 | 4565 | replace_rule_revert(ofproto, old_rule, new_rule); |
1f42be1c JR |
4566 | } |
4567 | ||
39c94593 | 4568 | /* To be called after version bump. */ |
c84d8691 JR |
4569 | static void |
4570 | add_flow_finish(struct ofproto *ofproto, struct ofputil_flow_mod *fm, | |
4571 | const struct flow_mod_requester *req, | |
39c94593 | 4572 | struct rule *old_rule, struct rule *new_rule) |
c84d8691 JR |
4573 | OVS_REQUIRES(ofproto_mutex) |
4574 | { | |
39c94593 | 4575 | struct ovs_list dead_cookies = OVS_LIST_INITIALIZER(&dead_cookies); |
8037acb4 | 4576 | |
39c94593 JR |
4577 | replace_rule_finish(ofproto, fm, req, old_rule, new_rule, &dead_cookies); |
4578 | learned_cookies_flush(ofproto, &dead_cookies); | |
802f84ff | 4579 | |
39c94593 JR |
4580 | if (old_rule) { |
4581 | ovsrcu_postpone(remove_rule_rcu, old_rule); | |
4582 | } else { | |
4583 | if (minimask_get_vid_mask(&new_rule->cr.match.mask) == VLAN_VID_MASK) { | |
c84d8691 | 4584 | if (ofproto->vlan_bitmap) { |
39c94593 | 4585 | uint16_t vid = miniflow_get_vid(&new_rule->cr.match.flow); |
062fea06 | 4586 | |
c84d8691 JR |
4587 | if (!bitmap_is_set(ofproto->vlan_bitmap, vid)) { |
4588 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
4589 | ofproto->vlans_changed = true; | |
4590 | } | |
4591 | } else { | |
834fe5cb BP |
4592 | ofproto->vlans_changed = true; |
4593 | } | |
834fe5cb | 4594 | } |
c84d8691 | 4595 | |
39c94593 | 4596 | ofmonitor_report(ofproto->connmgr, new_rule, NXFME_ADDED, 0, |
c84d8691 JR |
4597 | req ? req->ofconn : NULL, |
4598 | req ? req->request->xid : 0, NULL); | |
4599 | } | |
4600 | ||
39c94593 | 4601 | send_buffered_packet(req, fm->buffer_id, new_rule); |
c84d8691 | 4602 | } |
79eee1eb BP |
4603 | \f |
4604 | /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */ | |
064af421 | 4605 | |
39c94593 JR |
4606 | /* Create a new rule based on attributes in 'fm', match in 'cr', 'table_id', |
4607 | * and 'old_rule'. Note that the rule is NOT inserted into a any data | |
4608 | * structures yet. Takes ownership of 'cr'. */ | |
90bf1e07 | 4609 | static enum ofperr |
39c94593 JR |
4610 | replace_rule_create(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4611 | struct cls_rule *cr, uint8_t table_id, | |
4612 | struct rule *old_rule, struct rule **new_rule) | |
79eee1eb | 4613 | { |
39c94593 | 4614 | struct rule *rule; |
dd27be82 | 4615 | enum ofperr error; |
79eee1eb | 4616 | |
39c94593 JR |
4617 | /* Allocate new rule. */ |
4618 | rule = ofproto->ofproto_class->rule_alloc(); | |
4619 | if (!rule) { | |
4620 | cls_rule_destroy(cr); | |
4621 | VLOG_WARN_RL(&rl, "%s: failed to allocate a rule.", ofproto->name); | |
4622 | return OFPERR_OFPFMFC_UNKNOWN; | |
af822017 BP |
4623 | } |
4624 | ||
39c94593 JR |
4625 | /* Initialize base state. */ |
4626 | *CONST_CAST(struct ofproto **, &rule->ofproto) = ofproto; | |
4627 | cls_rule_move(CONST_CAST(struct cls_rule *, &rule->cr), cr); | |
4628 | ovs_refcount_init(&rule->ref_count); | |
4629 | rule->flow_cookie = fm->new_cookie; | |
4630 | rule->created = rule->modified = time_msec(); | |
834fe5cb | 4631 | |
39c94593 JR |
4632 | ovs_mutex_init(&rule->mutex); |
4633 | ovs_mutex_lock(&rule->mutex); | |
4634 | rule->idle_timeout = fm->idle_timeout; | |
4635 | rule->hard_timeout = fm->hard_timeout; | |
cf119e09 | 4636 | *CONST_CAST(uint16_t *, &rule->importance) = fm->importance; |
f695ebfa | 4637 | rule->removed_reason = OVS_OFPRR_NONE; |
834fe5cb | 4638 | |
39c94593 JR |
4639 | *CONST_CAST(uint8_t *, &rule->table_id) = table_id; |
4640 | rule->flags = fm->flags & OFPUTIL_FF_STATE; | |
4641 | *CONST_CAST(const struct rule_actions **, &rule->actions) | |
4642 | = rule_actions_create(fm->ofpacts, fm->ofpacts_len); | |
4643 | list_init(&rule->meter_list_node); | |
4644 | rule->eviction_group = NULL; | |
4645 | list_init(&rule->expirable); | |
4646 | rule->monitor_flags = 0; | |
4647 | rule->add_seqno = 0; | |
4648 | rule->modify_seqno = 0; | |
834fe5cb | 4649 | |
39c94593 | 4650 | /* Copy values from old rule for modify semantics. */ |
6787a49f | 4651 | if (old_rule && fm->delete_reason != OFPRR_EVICTION) { |
39c94593 JR |
4652 | bool change_cookie = (fm->modify_cookie |
4653 | && fm->new_cookie != OVS_BE64_MAX | |
4654 | && fm->new_cookie != old_rule->flow_cookie); | |
4655 | ||
4656 | ovs_mutex_lock(&old_rule->mutex); | |
4657 | if (fm->command != OFPFC_ADD) { | |
4658 | rule->idle_timeout = old_rule->idle_timeout; | |
4659 | rule->hard_timeout = old_rule->hard_timeout; | |
cf119e09 | 4660 | *CONST_CAST(uint16_t *, &rule->importance) = old_rule->importance; |
39c94593 JR |
4661 | rule->flags = old_rule->flags; |
4662 | rule->created = old_rule->created; | |
4663 | } | |
4664 | if (!change_cookie) { | |
4665 | rule->flow_cookie = old_rule->flow_cookie; | |
4666 | } | |
4667 | ovs_mutex_unlock(&old_rule->mutex); | |
dd27be82 | 4668 | } |
dd27be82 JR |
4669 | ovs_mutex_unlock(&rule->mutex); |
4670 | ||
39c94593 JR |
4671 | /* Construct rule, initializing derived state. */ |
4672 | error = ofproto->ofproto_class->rule_construct(rule); | |
4673 | if (error) { | |
4674 | ofproto_rule_destroy__(rule); | |
4675 | return error; | |
dd27be82 | 4676 | } |
b277c7cc | 4677 | |
39c94593 | 4678 | rule->removed = true; /* Not yet in ofproto data structures. */ |
dd27be82 | 4679 | |
39c94593 JR |
4680 | *new_rule = rule; |
4681 | return 0; | |
4682 | } | |
884e1dc4 | 4683 | |
39c94593 JR |
4684 | static void |
4685 | replace_rule_start(struct ofproto *ofproto, | |
4686 | struct rule *old_rule, struct rule *new_rule, | |
4687 | struct cls_conjunction *conjs, size_t n_conjs) | |
4688 | { | |
4689 | struct oftable *table = &ofproto->tables[new_rule->table_id]; | |
834fe5cb | 4690 | |
6787a49f | 4691 | /* 'old_rule' may be either an evicted rule or replaced rule. */ |
39c94593 JR |
4692 | if (old_rule) { |
4693 | /* Mark the old rule for removal in the next version. */ | |
4694 | cls_rule_make_invisible_in_version(&old_rule->cr, | |
18721c4a | 4695 | ofproto->tables_version + 1); |
d79e3d70 JR |
4696 | } else { |
4697 | table->n_flows++; | |
dd27be82 | 4698 | } |
39c94593 JR |
4699 | /* Insert flow to the classifier, so that later flow_mods may relate |
4700 | * to it. This is reversible, in case later errors require this to | |
4701 | * be reverted. */ | |
4702 | ofproto_rule_insert__(ofproto, new_rule); | |
4703 | /* Make the new rule visible for classifier lookups only from the next | |
4704 | * version. */ | |
4705 | classifier_insert(&table->cls, &new_rule->cr, conjs, n_conjs); | |
4706 | } | |
4707 | ||
4708 | static void replace_rule_revert(struct ofproto *ofproto, | |
4709 | struct rule *old_rule, struct rule *new_rule) | |
4710 | { | |
4711 | struct oftable *table = &ofproto->tables[new_rule->table_id]; | |
35f48b8b | 4712 | |
39c94593 | 4713 | if (old_rule) { |
d79e3d70 | 4714 | /* Restore the original visibility of the old rule. */ |
39c94593 | 4715 | cls_rule_restore_visibility(&old_rule->cr); |
d79e3d70 JR |
4716 | } else { |
4717 | /* Restore table's rule count. */ | |
4718 | table->n_flows--; | |
834fe5cb BP |
4719 | } |
4720 | ||
39c94593 JR |
4721 | /* Remove the new rule immediately. It was never visible to lookups. */ |
4722 | if (!classifier_remove(&table->cls, &new_rule->cr)) { | |
4723 | OVS_NOT_REACHED(); | |
5ecc9d81 | 4724 | } |
39c94593 JR |
4725 | ofproto_rule_remove__(ofproto, new_rule); |
4726 | /* The rule was not inserted to the ofproto provider, so we can | |
4727 | * release it without deleting it from the ofproto provider. */ | |
4728 | ofproto_rule_unref(new_rule); | |
dd27be82 | 4729 | } |
79eee1eb | 4730 | |
39c94593 | 4731 | /* Adds the 'new_rule', replacing the 'old_rule'. */ |
dd27be82 | 4732 | static void |
39c94593 JR |
4733 | replace_rule_finish(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4734 | const struct flow_mod_requester *req, | |
4735 | struct rule *old_rule, struct rule *new_rule, | |
4736 | struct ovs_list *dead_cookies) | |
dd27be82 JR |
4737 | OVS_REQUIRES(ofproto_mutex) |
4738 | { | |
39c94593 | 4739 | bool forward_stats = !(fm->flags & OFPUTIL_FF_RESET_COUNTS); |
6787a49f JR |
4740 | struct rule *replaced_rule; |
4741 | ||
4742 | replaced_rule = fm->delete_reason != OFPRR_EVICTION ? old_rule : NULL; | |
dd27be82 | 4743 | |
6787a49f JR |
4744 | /* Insert the new flow to the ofproto provider. A non-NULL 'replaced_rule' |
4745 | * is a duplicate rule the 'new_rule' is replacing. The provider should | |
4746 | * link the stats from the old rule to the new one if 'forward_stats' is | |
4747 | * 'true'. The 'replaced_rule' will be deleted right after this call. */ | |
4748 | ofproto->ofproto_class->rule_insert(new_rule, replaced_rule, | |
4749 | forward_stats); | |
39c94593 JR |
4750 | learned_cookies_inc(ofproto, rule_get_actions(new_rule)); |
4751 | ||
4752 | if (old_rule) { | |
4753 | const struct rule_actions *old_actions = rule_get_actions(old_rule); | |
4754 | ||
39c94593 JR |
4755 | /* Remove the old rule from data structures. Removal from the |
4756 | * classifier and the deletion of the rule is RCU postponed by the | |
4757 | * caller. */ | |
4758 | ofproto_rule_remove__(ofproto, old_rule); | |
4759 | learned_cookies_dec(ofproto, old_actions, dead_cookies); | |
4760 | ||
6787a49f JR |
4761 | if (replaced_rule) { |
4762 | enum nx_flow_update_event event = fm->command == OFPFC_ADD | |
4763 | ? NXFME_ADDED : NXFME_MODIFIED; | |
4764 | ||
4765 | bool change_cookie = (fm->modify_cookie | |
4766 | && fm->new_cookie != OVS_BE64_MAX | |
4767 | && fm->new_cookie != old_rule->flow_cookie); | |
4768 | ||
4769 | bool change_actions = !ofpacts_equal(fm->ofpacts, | |
4770 | fm->ofpacts_len, | |
4771 | old_actions->ofpacts, | |
4772 | old_actions->ofpacts_len); | |
4773 | ||
4774 | if (event != NXFME_MODIFIED || change_actions || change_cookie) { | |
4775 | ofmonitor_report(ofproto->connmgr, new_rule, event, 0, | |
4776 | req ? req->ofconn : NULL, | |
4777 | req ? req->request->xid : 0, | |
4778 | change_actions ? old_actions : NULL); | |
4779 | } | |
4780 | } else { | |
4781 | /* XXX: This is slight duplication with delete_flows_finish__() */ | |
4782 | ||
f695ebfa | 4783 | old_rule->removed_reason = OFPRR_EVICTION; |
6787a49f JR |
4784 | |
4785 | ofmonitor_report(ofproto->connmgr, old_rule, NXFME_DELETED, | |
4786 | OFPRR_EVICTION, | |
39c94593 | 4787 | req ? req->ofconn : NULL, |
6787a49f | 4788 | req ? req->request->xid : 0, NULL); |
39c94593 | 4789 | } |
dd27be82 | 4790 | } |
9ed18e46 BP |
4791 | } |
4792 | ||
9387b970 | 4793 | static enum ofperr |
4fcb2083 | 4794 | modify_flows_start__(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
39c94593 JR |
4795 | struct rule_collection *old_rules, |
4796 | struct rule_collection *new_rules) | |
dd27be82 JR |
4797 | OVS_REQUIRES(ofproto_mutex) |
4798 | { | |
4799 | enum ofperr error; | |
4800 | ||
39c94593 JR |
4801 | rule_collection_init(new_rules); |
4802 | ||
4803 | if (old_rules->n > 0) { | |
4804 | struct cls_conjunction *conjs; | |
4805 | size_t n_conjs; | |
4806 | size_t i; | |
4807 | ||
4808 | /* Create a new 'modified' rule for each old rule. */ | |
4809 | for (i = 0; i < old_rules->n; i++) { | |
4810 | struct rule *old_rule = old_rules->rules[i]; | |
4811 | struct rule *new_rule; | |
4812 | struct cls_rule cr; | |
4813 | ||
4814 | cls_rule_clone_in_version(&cr, &old_rule->cr, | |
4815 | ofproto->tables_version + 1); | |
4816 | error = replace_rule_create(ofproto, fm, &cr, old_rule->table_id, | |
4817 | old_rule, &new_rule); | |
4818 | if (!error) { | |
4819 | rule_collection_add(new_rules, new_rule); | |
4820 | } else { | |
4821 | rule_collection_unref(new_rules); | |
4822 | rule_collection_destroy(new_rules); | |
4823 | return error; | |
4824 | } | |
4825 | } | |
4826 | ovs_assert(new_rules->n == old_rules->n); | |
4827 | ||
4828 | get_conjunctions(fm, &conjs, &n_conjs); | |
4829 | for (i = 0; i < old_rules->n; i++) { | |
4830 | replace_rule_start(ofproto, old_rules->rules[i], | |
4831 | new_rules->rules[i], conjs, n_conjs); | |
4832 | } | |
4833 | free(conjs); | |
d99f64d7 JR |
4834 | } else if (!(fm->cookie_mask != htonll(0) |
4835 | || fm->new_cookie == OVS_BE64_MAX)) { | |
39c94593 JR |
4836 | /* No match, add a new flow. */ |
4837 | error = add_flow_start(ofproto, fm, &old_rules->rules[0], | |
4838 | &new_rules->rules[0]); | |
dd27be82 | 4839 | if (!error) { |
6787a49f JR |
4840 | ovs_assert(fm->delete_reason == OFPRR_EVICTION |
4841 | || !old_rules->rules[0]); | |
dd27be82 | 4842 | } |
39c94593 | 4843 | new_rules->n = 1; |
dd27be82 | 4844 | } else { |
d99f64d7 | 4845 | error = 0; |
dd27be82 | 4846 | } |
39c94593 | 4847 | |
dd27be82 JR |
4848 | return error; |
4849 | } | |
4850 | ||
90bf1e07 BP |
4851 | /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on |
4852 | * failure. | |
9ed18e46 BP |
4853 | * |
4854 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, | |
4855 | * if any. */ | |
90bf1e07 | 4856 | static enum ofperr |
4fcb2083 | 4857 | modify_flows_start_loose(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
39c94593 JR |
4858 | struct rule_collection *old_rules, |
4859 | struct rule_collection *new_rules) | |
15aaf599 | 4860 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 4861 | { |
a9b22b7f | 4862 | struct rule_criteria criteria; |
d51c8b71 | 4863 | enum ofperr error; |
9ed18e46 | 4864 | |
2b7b1427 | 4865 | rule_criteria_init(&criteria, fm->table_id, &fm->match, 0, CLS_MAX_VERSION, |
a9b22b7f | 4866 | fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG11_ANY); |
dd51dae2 BP |
4867 | rule_criteria_require_rw(&criteria, |
4868 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
39c94593 | 4869 | error = collect_rules_loose(ofproto, &criteria, old_rules); |
a9b22b7f BP |
4870 | rule_criteria_destroy(&criteria); |
4871 | ||
a8e547c1 | 4872 | if (!error) { |
39c94593 | 4873 | error = modify_flows_start__(ofproto, fm, old_rules, new_rules); |
d99f64d7 JR |
4874 | } |
4875 | ||
4876 | if (error) { | |
39c94593 | 4877 | rule_collection_destroy(old_rules); |
d99f64d7 JR |
4878 | } |
4879 | return error; | |
4880 | } | |
4881 | ||
1f42be1c | 4882 | static void |
6787a49f JR |
4883 | modify_flows_revert(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4884 | struct rule_collection *old_rules, | |
39c94593 | 4885 | struct rule_collection *new_rules) |
1f42be1c JR |
4886 | OVS_REQUIRES(ofproto_mutex) |
4887 | { | |
39c94593 JR |
4888 | /* Old rules were not changed yet, only need to revert new rules. */ |
4889 | if (old_rules->n == 0 && new_rules->n == 1) { | |
6787a49f | 4890 | add_flow_revert(ofproto, fm, old_rules->rules[0], new_rules->rules[0]); |
39c94593 JR |
4891 | } else if (old_rules->n > 0) { |
4892 | for (size_t i = 0; i < old_rules->n; i++) { | |
4893 | replace_rule_revert(ofproto, old_rules->rules[i], | |
4894 | new_rules->rules[i]); | |
4895 | } | |
4896 | rule_collection_destroy(new_rules); | |
4897 | rule_collection_destroy(old_rules); | |
1f42be1c | 4898 | } |
1f42be1c JR |
4899 | } |
4900 | ||
d99f64d7 JR |
4901 | static void |
4902 | modify_flows_finish(struct ofproto *ofproto, struct ofputil_flow_mod *fm, | |
4903 | const struct flow_mod_requester *req, | |
39c94593 JR |
4904 | struct rule_collection *old_rules, |
4905 | struct rule_collection *new_rules) | |
d99f64d7 JR |
4906 | OVS_REQUIRES(ofproto_mutex) |
4907 | { | |
39c94593 JR |
4908 | if (old_rules->n == 0 && new_rules->n == 1) { |
4909 | add_flow_finish(ofproto, fm, req, old_rules->rules[0], | |
4910 | new_rules->rules[0]); | |
4911 | } else if (old_rules->n > 0) { | |
4912 | struct ovs_list dead_cookies = OVS_LIST_INITIALIZER(&dead_cookies); | |
4913 | ||
4914 | ovs_assert(new_rules->n == old_rules->n); | |
4915 | ||
4916 | for (size_t i = 0; i < old_rules->n; i++) { | |
4917 | replace_rule_finish(ofproto, fm, req, old_rules->rules[i], | |
4918 | new_rules->rules[i], &dead_cookies); | |
4919 | } | |
4920 | learned_cookies_flush(ofproto, &dead_cookies); | |
4921 | rule_collection_remove_postponed(old_rules); | |
4922 | ||
4923 | send_buffered_packet(req, fm->buffer_id, new_rules->rules[0]); | |
4924 | rule_collection_destroy(new_rules); | |
d99f64d7 | 4925 | } |
d99f64d7 JR |
4926 | } |
4927 | ||
79eee1eb | 4928 | /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error |
baae3d02 | 4929 | * code on failure. */ |
90bf1e07 | 4930 | static enum ofperr |
4fcb2083 | 4931 | modify_flow_start_strict(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
39c94593 JR |
4932 | struct rule_collection *old_rules, |
4933 | struct rule_collection *new_rules) | |
15aaf599 | 4934 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4935 | { |
a9b22b7f | 4936 | struct rule_criteria criteria; |
d51c8b71 | 4937 | enum ofperr error; |
6c1491fb | 4938 | |
a9b22b7f | 4939 | rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority, |
2b7b1427 JR |
4940 | CLS_MAX_VERSION, fm->cookie, fm->cookie_mask, OFPP_ANY, |
4941 | OFPG11_ANY); | |
dd51dae2 BP |
4942 | rule_criteria_require_rw(&criteria, |
4943 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
39c94593 | 4944 | error = collect_rules_strict(ofproto, &criteria, old_rules); |
a9b22b7f BP |
4945 | rule_criteria_destroy(&criteria); |
4946 | ||
a8e547c1 | 4947 | if (!error) { |
dd27be82 | 4948 | /* collect_rules_strict() can return max 1 rule. */ |
39c94593 | 4949 | error = modify_flows_start__(ofproto, fm, old_rules, new_rules); |
d99f64d7 JR |
4950 | } |
4951 | ||
4952 | if (error) { | |
39c94593 | 4953 | rule_collection_destroy(old_rules); |
d99f64d7 JR |
4954 | } |
4955 | return error; | |
4956 | } | |
9ed18e46 BP |
4957 | \f |
4958 | /* OFPFC_DELETE implementation. */ | |
79eee1eb | 4959 | |
254750ce | 4960 | static void |
39c94593 JR |
4961 | delete_flows_start__(struct ofproto *ofproto, |
4962 | const struct rule_collection *rules) | |
4963 | OVS_REQUIRES(ofproto_mutex) | |
4964 | { | |
4965 | for (size_t i = 0; i < rules->n; i++) { | |
d79e3d70 JR |
4966 | struct rule *rule = rules->rules[i]; |
4967 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
4968 | ||
4969 | table->n_flows--; | |
4970 | cls_rule_make_invisible_in_version(&rule->cr, | |
18721c4a | 4971 | ofproto->tables_version + 1); |
39c94593 JR |
4972 | } |
4973 | } | |
4974 | ||
4975 | static void | |
4976 | delete_flows_finish__(struct ofproto *ofproto, | |
4977 | struct rule_collection *rules, | |
4978 | enum ofp_flow_removed_reason reason, | |
4979 | const struct flow_mod_requester *req) | |
15aaf599 | 4980 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 4981 | { |
9ca4a86f | 4982 | if (rules->n) { |
55951e15 | 4983 | struct ovs_list dead_cookies = OVS_LIST_INITIALIZER(&dead_cookies); |
79eee1eb | 4984 | |
39c94593 JR |
4985 | for (size_t i = 0; i < rules->n; i++) { |
4986 | struct rule *rule = rules->rules[i]; | |
79eee1eb | 4987 | |
f695ebfa JR |
4988 | /* This value will be used to send the flow removed message right |
4989 | * before the rule is actually destroyed. */ | |
4990 | rule->removed_reason = reason; | |
4991 | ||
9ca4a86f | 4992 | ofmonitor_report(ofproto->connmgr, rule, NXFME_DELETED, reason, |
c84d8691 JR |
4993 | req ? req->ofconn : NULL, |
4994 | req ? req->request->xid : 0, NULL); | |
802f84ff | 4995 | ofproto_rule_remove__(ofproto, rule); |
802f84ff JR |
4996 | learned_cookies_dec(ofproto, rule_get_actions(rule), |
4997 | &dead_cookies); | |
9ca4a86f | 4998 | } |
39c94593 JR |
4999 | rule_collection_remove_postponed(rules); |
5000 | ||
35f48b8b | 5001 | learned_cookies_flush(ofproto, &dead_cookies); |
39c94593 JR |
5002 | } |
5003 | } | |
5004 | ||
5005 | /* Deletes the rules listed in 'rules'. | |
5006 | * The deleted rules will become invisible to the lookups in the next version. | |
5007 | * Destroys 'rules'. */ | |
5008 | static void | |
5009 | delete_flows__(struct rule_collection *rules, | |
5010 | enum ofp_flow_removed_reason reason, | |
5011 | const struct flow_mod_requester *req) | |
5012 | OVS_REQUIRES(ofproto_mutex) | |
5013 | { | |
5014 | if (rules->n) { | |
5015 | struct ofproto *ofproto = rules->rules[0]->ofproto; | |
5016 | ||
5017 | delete_flows_start__(ofproto, rules); | |
5018 | ofproto_bump_tables_version(ofproto); | |
5019 | delete_flows_finish__(ofproto, rules, reason, req); | |
9ca4a86f BP |
5020 | ofmonitor_flush(ofproto->connmgr); |
5021 | } | |
79eee1eb | 5022 | } |
79eee1eb BP |
5023 | |
5024 | /* Implements OFPFC_DELETE. */ | |
90bf1e07 | 5025 | static enum ofperr |
4fcb2083 | 5026 | delete_flows_start_loose(struct ofproto *ofproto, |
ce59413f JR |
5027 | const struct ofputil_flow_mod *fm, |
5028 | struct rule_collection *rules) | |
15aaf599 | 5029 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 5030 | { |
a9b22b7f | 5031 | struct rule_criteria criteria; |
90bf1e07 | 5032 | enum ofperr error; |
064af421 | 5033 | |
2b7b1427 | 5034 | rule_criteria_init(&criteria, fm->table_id, &fm->match, 0, CLS_MAX_VERSION, |
39c94593 JR |
5035 | fm->cookie, fm->cookie_mask, fm->out_port, |
5036 | fm->out_group); | |
dd51dae2 BP |
5037 | rule_criteria_require_rw(&criteria, |
5038 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
ce59413f | 5039 | error = collect_rules_loose(ofproto, &criteria, rules); |
a9b22b7f BP |
5040 | rule_criteria_destroy(&criteria); |
5041 | ||
802f84ff | 5042 | if (!error) { |
39c94593 | 5043 | delete_flows_start__(ofproto, rules); |
a8e547c1 | 5044 | } |
a8e547c1 BP |
5045 | |
5046 | return error; | |
064af421 BP |
5047 | } |
5048 | ||
ce59413f | 5049 | static void |
d79e3d70 | 5050 | delete_flows_revert(struct ofproto *ofproto, |
39c94593 | 5051 | struct rule_collection *rules) |
ce59413f JR |
5052 | OVS_REQUIRES(ofproto_mutex) |
5053 | { | |
1f42be1c | 5054 | for (size_t i = 0; i < rules->n; i++) { |
39c94593 | 5055 | struct rule *rule = rules->rules[i]; |
d79e3d70 JR |
5056 | struct oftable *table = &ofproto->tables[rule->table_id]; |
5057 | ||
5058 | /* Restore table's rule count. */ | |
5059 | table->n_flows++; | |
39c94593 JR |
5060 | |
5061 | /* Restore the original visibility of the rule. */ | |
5062 | cls_rule_restore_visibility(&rule->cr); | |
1f42be1c | 5063 | } |
ce59413f JR |
5064 | rule_collection_destroy(rules); |
5065 | } | |
5066 | ||
1f42be1c | 5067 | static void |
39c94593 JR |
5068 | delete_flows_finish(struct ofproto *ofproto, |
5069 | const struct ofputil_flow_mod *fm, | |
1f42be1c JR |
5070 | const struct flow_mod_requester *req, |
5071 | struct rule_collection *rules) | |
15aaf599 | 5072 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 5073 | { |
39c94593 | 5074 | delete_flows_finish__(ofproto, rules, fm->delete_reason, req); |
ce59413f JR |
5075 | } |
5076 | ||
5077 | /* Implements OFPFC_DELETE_STRICT. */ | |
5078 | static enum ofperr | |
4fcb2083 | 5079 | delete_flow_start_strict(struct ofproto *ofproto, |
ce59413f JR |
5080 | const struct ofputil_flow_mod *fm, |
5081 | struct rule_collection *rules) | |
5082 | OVS_REQUIRES(ofproto_mutex) | |
5083 | { | |
5084 | struct rule_criteria criteria; | |
5085 | enum ofperr error; | |
5086 | ||
a9b22b7f | 5087 | rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority, |
2b7b1427 | 5088 | CLS_MAX_VERSION, fm->cookie, fm->cookie_mask, |
a9b22b7f | 5089 | fm->out_port, fm->out_group); |
dd51dae2 BP |
5090 | rule_criteria_require_rw(&criteria, |
5091 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
ce59413f | 5092 | error = collect_rules_strict(ofproto, &criteria, rules); |
a9b22b7f BP |
5093 | rule_criteria_destroy(&criteria); |
5094 | ||
802f84ff | 5095 | if (!error) { |
39c94593 | 5096 | delete_flows_start__(ofproto, rules); |
ce59413f JR |
5097 | } |
5098 | ||
5099 | return error; | |
5100 | } | |
5101 | ||
f695ebfa | 5102 | /* This may only be called by rule_destroy_cb()! */ |
abe529af | 5103 | static void |
f695ebfa JR |
5104 | ofproto_rule_send_removed(struct rule *rule) |
5105 | OVS_EXCLUDED(ofproto_mutex) | |
abe529af BP |
5106 | { |
5107 | struct ofputil_flow_removed fr; | |
dc437090 | 5108 | long long int used; |
abe529af | 5109 | |
5cb7a798 | 5110 | minimatch_expand(&rule->cr.match, &fr.match); |
81a76618 | 5111 | fr.priority = rule->cr.priority; |
f695ebfa JR |
5112 | |
5113 | ovs_mutex_lock(&ofproto_mutex); | |
abe529af | 5114 | fr.cookie = rule->flow_cookie; |
f695ebfa | 5115 | fr.reason = rule->removed_reason; |
95216219 | 5116 | fr.table_id = rule->table_id; |
65e0be10 BP |
5117 | calc_duration(rule->created, time_msec(), |
5118 | &fr.duration_sec, &fr.duration_nsec); | |
d10976b7 | 5119 | ovs_mutex_lock(&rule->mutex); |
abe529af | 5120 | fr.idle_timeout = rule->idle_timeout; |
fa2bad0f | 5121 | fr.hard_timeout = rule->hard_timeout; |
d10976b7 | 5122 | ovs_mutex_unlock(&rule->mutex); |
abe529af | 5123 | rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count, |
dc437090 | 5124 | &fr.byte_count, &used); |
abe529af | 5125 | connmgr_send_flow_removed(rule->ofproto->connmgr, &fr); |
f695ebfa | 5126 | ovs_mutex_unlock(&ofproto_mutex); |
abe529af BP |
5127 | } |
5128 | ||
5129 | /* Sends an OpenFlow "flow removed" message with the given 'reason' (either | |
5130 | * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its | |
5131 | * ofproto. | |
5132 | * | |
5133 | * ofproto implementation ->run() functions should use this function to expire | |
5134 | * OpenFlow flows. */ | |
5135 | void | |
5136 | ofproto_rule_expire(struct rule *rule, uint8_t reason) | |
15aaf599 | 5137 | OVS_REQUIRES(ofproto_mutex) |
abe529af | 5138 | { |
802f84ff JR |
5139 | struct rule_collection rules; |
5140 | ||
5141 | rules.rules = rules.stub; | |
5142 | rules.n = 1; | |
5143 | rules.stub[0] = rule; | |
5144 | delete_flows__(&rules, reason, NULL); | |
79eee1eb | 5145 | } |
994c9973 BP |
5146 | |
5147 | /* Reduces '*timeout' to no more than 'max'. A value of zero in either case | |
5148 | * means "infinite". */ | |
5149 | static void | |
5150 | reduce_timeout(uint16_t max, uint16_t *timeout) | |
5151 | { | |
5152 | if (max && (!*timeout || *timeout > max)) { | |
5153 | *timeout = max; | |
5154 | } | |
5155 | } | |
5156 | ||
5157 | /* If 'idle_timeout' is nonzero, and 'rule' has no idle timeout or an idle | |
5158 | * timeout greater than 'idle_timeout', lowers 'rule''s idle timeout to | |
5159 | * 'idle_timeout' seconds. Similarly for 'hard_timeout'. | |
5160 | * | |
5161 | * Suitable for implementing OFPACT_FIN_TIMEOUT. */ | |
5162 | void | |
5163 | ofproto_rule_reduce_timeouts(struct rule *rule, | |
5164 | uint16_t idle_timeout, uint16_t hard_timeout) | |
d10976b7 | 5165 | OVS_EXCLUDED(ofproto_mutex, rule->mutex) |
994c9973 BP |
5166 | { |
5167 | if (!idle_timeout && !hard_timeout) { | |
5168 | return; | |
5169 | } | |
5170 | ||
abe7b10f | 5171 | ovs_mutex_lock(&ofproto_mutex); |
994c9973 BP |
5172 | if (list_is_empty(&rule->expirable)) { |
5173 | list_insert(&rule->ofproto->expirable, &rule->expirable); | |
5174 | } | |
abe7b10f | 5175 | ovs_mutex_unlock(&ofproto_mutex); |
994c9973 | 5176 | |
d10976b7 | 5177 | ovs_mutex_lock(&rule->mutex); |
994c9973 BP |
5178 | reduce_timeout(idle_timeout, &rule->idle_timeout); |
5179 | reduce_timeout(hard_timeout, &rule->hard_timeout); | |
d10976b7 | 5180 | ovs_mutex_unlock(&rule->mutex); |
994c9973 | 5181 | } |
79eee1eb | 5182 | \f |
90bf1e07 | 5183 | static enum ofperr |
2e4f5fcf | 5184 | handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
15aaf599 | 5185 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 5186 | { |
a5b8d268 | 5187 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
a9a2da38 | 5188 | struct ofputil_flow_mod fm; |
f25d0cf3 BP |
5189 | uint64_t ofpacts_stub[1024 / 8]; |
5190 | struct ofpbuf ofpacts; | |
90bf1e07 | 5191 | enum ofperr error; |
064af421 | 5192 | |
76589937 | 5193 | error = reject_slave_controller(ofconn); |
9deba63b | 5194 | if (error) { |
f25d0cf3 | 5195 | goto exit; |
9deba63b | 5196 | } |
3052b0c5 | 5197 | |
f25d0cf3 BP |
5198 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
5199 | error = ofputil_decode_flow_mod(&fm, oh, ofconn_get_protocol(ofconn), | |
7e9f8266 BP |
5200 | &ofpacts, |
5201 | u16_to_ofp(ofproto->max_ports), | |
5202 | ofproto->n_tables); | |
5203 | if (!error) { | |
5204 | error = ofproto_check_ofpacts(ofproto, fm.ofpacts, fm.ofpacts_len); | |
5205 | } | |
548de4dd | 5206 | if (!error) { |
baae3d02 BP |
5207 | struct flow_mod_requester req; |
5208 | ||
5209 | req.ofconn = ofconn; | |
c84d8691 | 5210 | req.request = oh; |
baae3d02 | 5211 | error = handle_flow_mod__(ofproto, &fm, &req); |
49bdc010 | 5212 | } |
a5b8d268 | 5213 | if (error) { |
f25d0cf3 | 5214 | goto exit_free_ofpacts; |
a5b8d268 | 5215 | } |
2e310801 | 5216 | |
696d1bcf | 5217 | ofconn_report_flow_mod(ofconn, fm.command); |
a5b8d268 | 5218 | |
f25d0cf3 BP |
5219 | exit_free_ofpacts: |
5220 | ofpbuf_uninit(&ofpacts); | |
5221 | exit: | |
5222 | return error; | |
75a75043 BP |
5223 | } |
5224 | ||
90bf1e07 | 5225 | static enum ofperr |
baae3d02 BP |
5226 | handle_flow_mod__(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
5227 | const struct flow_mod_requester *req) | |
15aaf599 | 5228 | OVS_EXCLUDED(ofproto_mutex) |
75a75043 | 5229 | { |
1f42be1c | 5230 | struct ofp_bundle_entry be; |
35412852 | 5231 | enum ofperr error; |
75a75043 | 5232 | |
15aaf599 | 5233 | ovs_mutex_lock(&ofproto_mutex); |
4fcb2083 | 5234 | error = do_bundle_flow_mod_start(ofproto, fm, &be); |
1f42be1c | 5235 | if (!error) { |
39c94593 | 5236 | ofproto_bump_tables_version(ofproto); |
1f42be1c | 5237 | do_bundle_flow_mod_finish(ofproto, fm, req, &be); |
3052b0c5 | 5238 | } |
baae3d02 | 5239 | ofmonitor_flush(ofproto->connmgr); |
15aaf599 | 5240 | ovs_mutex_unlock(&ofproto_mutex); |
35412852 BP |
5241 | |
5242 | run_rule_executes(ofproto); | |
5243 | return error; | |
3052b0c5 BP |
5244 | } |
5245 | ||
90bf1e07 | 5246 | static enum ofperr |
d1e2cf21 | 5247 | handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh) |
9deba63b | 5248 | { |
f4f1ea7e BP |
5249 | struct ofputil_role_request request; |
5250 | struct ofputil_role_request reply; | |
9deba63b | 5251 | struct ofpbuf *buf; |
6ea4776b JR |
5252 | enum ofperr error; |
5253 | ||
f4f1ea7e | 5254 | error = ofputil_decode_role_message(oh, &request); |
6ea4776b JR |
5255 | if (error) { |
5256 | return error; | |
5257 | } | |
9deba63b | 5258 | |
f4f1ea7e | 5259 | if (request.role != OFPCR12_ROLE_NOCHANGE) { |
f4f1ea7e BP |
5260 | if (request.have_generation_id |
5261 | && !ofconn_set_master_election_id(ofconn, request.generation_id)) { | |
5262 | return OFPERR_OFPRRFC_STALE; | |
6ea4776b | 5263 | } |
6ea4776b | 5264 | |
f4f1ea7e BP |
5265 | ofconn_set_role(ofconn, request.role); |
5266 | } | |
9deba63b | 5267 | |
f4f1ea7e | 5268 | reply.role = ofconn_get_role(ofconn); |
147cc9d3 BP |
5269 | reply.have_generation_id = ofconn_get_master_election_id( |
5270 | ofconn, &reply.generation_id); | |
f4f1ea7e | 5271 | buf = ofputil_encode_role_reply(oh, &reply); |
b0421aa2 | 5272 | ofconn_send_reply(ofconn, buf); |
9deba63b BP |
5273 | |
5274 | return 0; | |
5275 | } | |
5276 | ||
90bf1e07 | 5277 | static enum ofperr |
6c1491fb BP |
5278 | handle_nxt_flow_mod_table_id(struct ofconn *ofconn, |
5279 | const struct ofp_header *oh) | |
5280 | { | |
982697a4 | 5281 | const struct nx_flow_mod_table_id *msg = ofpmsg_body(oh); |
27527aa0 BP |
5282 | enum ofputil_protocol cur, next; |
5283 | ||
5284 | cur = ofconn_get_protocol(ofconn); | |
5285 | next = ofputil_protocol_set_tid(cur, msg->set != 0); | |
5286 | ofconn_set_protocol(ofconn, next); | |
6c1491fb | 5287 | |
6c1491fb BP |
5288 | return 0; |
5289 | } | |
5290 | ||
90bf1e07 | 5291 | static enum ofperr |
d1e2cf21 | 5292 | handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh) |
09246b99 | 5293 | { |
982697a4 | 5294 | const struct nx_set_flow_format *msg = ofpmsg_body(oh); |
27527aa0 BP |
5295 | enum ofputil_protocol cur, next; |
5296 | enum ofputil_protocol next_base; | |
09246b99 | 5297 | |
27527aa0 BP |
5298 | next_base = ofputil_nx_flow_format_to_protocol(ntohl(msg->format)); |
5299 | if (!next_base) { | |
90bf1e07 | 5300 | return OFPERR_OFPBRC_EPERM; |
09246b99 | 5301 | } |
7ee20df1 | 5302 | |
27527aa0 BP |
5303 | cur = ofconn_get_protocol(ofconn); |
5304 | next = ofputil_protocol_set_base(cur, next_base); | |
27527aa0 | 5305 | ofconn_set_protocol(ofconn, next); |
b20f4073 | 5306 | |
7ee20df1 | 5307 | return 0; |
09246b99 BP |
5308 | } |
5309 | ||
90bf1e07 | 5310 | static enum ofperr |
54834960 EJ |
5311 | handle_nxt_set_packet_in_format(struct ofconn *ofconn, |
5312 | const struct ofp_header *oh) | |
5313 | { | |
982697a4 | 5314 | const struct nx_set_packet_in_format *msg = ofpmsg_body(oh); |
54834960 EJ |
5315 | uint32_t format; |
5316 | ||
54834960 | 5317 | format = ntohl(msg->format); |
a15f0eeb | 5318 | if (format != NXPIF_OPENFLOW10 && format != NXPIF_NXM) { |
90bf1e07 | 5319 | return OFPERR_OFPBRC_EPERM; |
54834960 EJ |
5320 | } |
5321 | ||
54834960 EJ |
5322 | ofconn_set_packet_in_format(ofconn, format); |
5323 | return 0; | |
5324 | } | |
5325 | ||
80d5aefd BP |
5326 | static enum ofperr |
5327 | handle_nxt_set_async_config(struct ofconn *ofconn, const struct ofp_header *oh) | |
5328 | { | |
982697a4 | 5329 | const struct nx_async_config *msg = ofpmsg_body(oh); |
80d5aefd BP |
5330 | uint32_t master[OAM_N_TYPES]; |
5331 | uint32_t slave[OAM_N_TYPES]; | |
5332 | ||
5333 | master[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[0]); | |
5334 | master[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[0]); | |
5335 | master[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[0]); | |
5336 | ||
5337 | slave[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[1]); | |
5338 | slave[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[1]); | |
5339 | slave[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[1]); | |
5340 | ||
5341 | ofconn_set_async_config(ofconn, master, slave); | |
4550b647 MM |
5342 | if (ofconn_get_type(ofconn) == OFCONN_SERVICE && |
5343 | !ofconn_get_miss_send_len(ofconn)) { | |
5344 | ofconn_set_miss_send_len(ofconn, OFP_DEFAULT_MISS_SEND_LEN); | |
5345 | } | |
80d5aefd BP |
5346 | |
5347 | return 0; | |
5348 | } | |
5349 | ||
c423b3b3 AC |
5350 | static enum ofperr |
5351 | handle_nxt_get_async_request(struct ofconn *ofconn, const struct ofp_header *oh) | |
5352 | { | |
5353 | struct ofpbuf *buf; | |
5354 | uint32_t master[OAM_N_TYPES]; | |
5355 | uint32_t slave[OAM_N_TYPES]; | |
5356 | struct nx_async_config *msg; | |
5357 | ||
5358 | ofconn_get_async_config(ofconn, master, slave); | |
5359 | buf = ofpraw_alloc_reply(OFPRAW_OFPT13_GET_ASYNC_REPLY, oh, 0); | |
5360 | msg = ofpbuf_put_zeros(buf, sizeof *msg); | |
5361 | ||
5362 | msg->packet_in_mask[0] = htonl(master[OAM_PACKET_IN]); | |
5363 | msg->port_status_mask[0] = htonl(master[OAM_PORT_STATUS]); | |
5364 | msg->flow_removed_mask[0] = htonl(master[OAM_FLOW_REMOVED]); | |
5365 | ||
5366 | msg->packet_in_mask[1] = htonl(slave[OAM_PACKET_IN]); | |
5367 | msg->port_status_mask[1] = htonl(slave[OAM_PORT_STATUS]); | |
5368 | msg->flow_removed_mask[1] = htonl(slave[OAM_FLOW_REMOVED]); | |
5369 | ||
5370 | ofconn_send_reply(ofconn, buf); | |
5371 | ||
5372 | return 0; | |
5373 | } | |
5374 | ||
a7349929 BP |
5375 | static enum ofperr |
5376 | handle_nxt_set_controller_id(struct ofconn *ofconn, | |
5377 | const struct ofp_header *oh) | |
5378 | { | |
982697a4 | 5379 | const struct nx_controller_id *nci = ofpmsg_body(oh); |
a7349929 | 5380 | |
a7349929 BP |
5381 | if (!is_all_zeros(nci->zero, sizeof nci->zero)) { |
5382 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
5383 | } | |
5384 | ||
5385 | ofconn_set_controller_id(ofconn, ntohs(nci->controller_id)); | |
5386 | return 0; | |
5387 | } | |
5388 | ||
90bf1e07 | 5389 | static enum ofperr |
d1e2cf21 | 5390 | handle_barrier_request(struct ofconn *ofconn, const struct ofp_header *oh) |
246e61ea | 5391 | { |
246e61ea JP |
5392 | struct ofpbuf *buf; |
5393 | ||
982697a4 BP |
5394 | buf = ofpraw_alloc_reply((oh->version == OFP10_VERSION |
5395 | ? OFPRAW_OFPT10_BARRIER_REPLY | |
5396 | : OFPRAW_OFPT11_BARRIER_REPLY), oh, 0); | |
b0421aa2 | 5397 | ofconn_send_reply(ofconn, buf); |
246e61ea JP |
5398 | return 0; |
5399 | } | |
5400 | ||
2b07c8b1 BP |
5401 | static void |
5402 | ofproto_compose_flow_refresh_update(const struct rule *rule, | |
5403 | enum nx_flow_monitor_flags flags, | |
ca6ba700 | 5404 | struct ovs_list *msgs) |
15aaf599 | 5405 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 | 5406 | { |
6f00e29b | 5407 | const struct rule_actions *actions; |
2b07c8b1 | 5408 | struct ofputil_flow_update fu; |
5cb7a798 | 5409 | struct match match; |
2b07c8b1 | 5410 | |
2b07c8b1 BP |
5411 | fu.event = (flags & (NXFMF_INITIAL | NXFMF_ADD) |
5412 | ? NXFME_ADDED : NXFME_MODIFIED); | |
5413 | fu.reason = 0; | |
d10976b7 | 5414 | ovs_mutex_lock(&rule->mutex); |
2b07c8b1 BP |
5415 | fu.idle_timeout = rule->idle_timeout; |
5416 | fu.hard_timeout = rule->hard_timeout; | |
d10976b7 | 5417 | ovs_mutex_unlock(&rule->mutex); |
2b07c8b1 BP |
5418 | fu.table_id = rule->table_id; |
5419 | fu.cookie = rule->flow_cookie; | |
5cb7a798 BP |
5420 | minimatch_expand(&rule->cr.match, &match); |
5421 | fu.match = &match; | |
6b140a4e | 5422 | fu.priority = rule->cr.priority; |
6f00e29b | 5423 | |
b20f4073 | 5424 | actions = flags & NXFMF_ACTIONS ? rule_get_actions(rule) : NULL; |
6f00e29b BP |
5425 | fu.ofpacts = actions ? actions->ofpacts : NULL; |
5426 | fu.ofpacts_len = actions ? actions->ofpacts_len : 0; | |
2b07c8b1 BP |
5427 | |
5428 | if (list_is_empty(msgs)) { | |
5429 | ofputil_start_flow_update(msgs); | |
5430 | } | |
5431 | ofputil_append_flow_update(&fu, msgs); | |
5432 | } | |
5433 | ||
5434 | void | |
a8e547c1 | 5435 | ofmonitor_compose_refresh_updates(struct rule_collection *rules, |
ca6ba700 | 5436 | struct ovs_list *msgs) |
15aaf599 | 5437 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 | 5438 | { |
a8e547c1 | 5439 | size_t i; |
2b07c8b1 | 5440 | |
a8e547c1 BP |
5441 | for (i = 0; i < rules->n; i++) { |
5442 | struct rule *rule = rules->rules[i]; | |
2b07c8b1 BP |
5443 | enum nx_flow_monitor_flags flags = rule->monitor_flags; |
5444 | rule->monitor_flags = 0; | |
5445 | ||
5446 | ofproto_compose_flow_refresh_update(rule, flags, msgs); | |
5447 | } | |
5448 | } | |
5449 | ||
5450 | static void | |
5451 | ofproto_collect_ofmonitor_refresh_rule(const struct ofmonitor *m, | |
5452 | struct rule *rule, uint64_t seqno, | |
a8e547c1 | 5453 | struct rule_collection *rules) |
15aaf599 | 5454 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
5455 | { |
5456 | enum nx_flow_monitor_flags update; | |
5457 | ||
5e8b38b0 | 5458 | if (rule_is_hidden(rule)) { |
2b07c8b1 BP |
5459 | return; |
5460 | } | |
5461 | ||
b20f4073 | 5462 | if (!ofproto_rule_has_out_port(rule, m->out_port)) { |
2b07c8b1 BP |
5463 | return; |
5464 | } | |
5465 | ||
5466 | if (seqno) { | |
5467 | if (rule->add_seqno > seqno) { | |
5468 | update = NXFMF_ADD | NXFMF_MODIFY; | |
5469 | } else if (rule->modify_seqno > seqno) { | |
5470 | update = NXFMF_MODIFY; | |
5471 | } else { | |
5472 | return; | |
5473 | } | |
5474 | ||
5475 | if (!(m->flags & update)) { | |
5476 | return; | |
5477 | } | |
5478 | } else { | |
5479 | update = NXFMF_INITIAL; | |
5480 | } | |
5481 | ||
5482 | if (!rule->monitor_flags) { | |
a8e547c1 | 5483 | rule_collection_add(rules, rule); |
2b07c8b1 BP |
5484 | } |
5485 | rule->monitor_flags |= update | (m->flags & NXFMF_ACTIONS); | |
5486 | } | |
5487 | ||
5488 | static void | |
5489 | ofproto_collect_ofmonitor_refresh_rules(const struct ofmonitor *m, | |
5490 | uint64_t seqno, | |
a8e547c1 | 5491 | struct rule_collection *rules) |
15aaf599 | 5492 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
5493 | { |
5494 | const struct ofproto *ofproto = ofconn_get_ofproto(m->ofconn); | |
2b07c8b1 | 5495 | const struct oftable *table; |
81a76618 | 5496 | struct cls_rule target; |
2b07c8b1 | 5497 | |
2b7b1427 | 5498 | cls_rule_init_from_minimatch(&target, &m->match, 0, CLS_MAX_VERSION); |
2b07c8b1 | 5499 | FOR_EACH_MATCHING_TABLE (table, m->table_id, ofproto) { |
2b07c8b1 BP |
5500 | struct rule *rule; |
5501 | ||
5f0476ce | 5502 | CLS_FOR_EACH_TARGET (rule, cr, &table->cls, &target) { |
2b07c8b1 BP |
5503 | ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules); |
5504 | } | |
5505 | } | |
48d28ac1 | 5506 | cls_rule_destroy(&target); |
2b07c8b1 BP |
5507 | } |
5508 | ||
5509 | static void | |
5510 | ofproto_collect_ofmonitor_initial_rules(struct ofmonitor *m, | |
a8e547c1 | 5511 | struct rule_collection *rules) |
15aaf599 | 5512 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
5513 | { |
5514 | if (m->flags & NXFMF_INITIAL) { | |
5515 | ofproto_collect_ofmonitor_refresh_rules(m, 0, rules); | |
5516 | } | |
5517 | } | |
5518 | ||
5519 | void | |
5520 | ofmonitor_collect_resume_rules(struct ofmonitor *m, | |
a8e547c1 | 5521 | uint64_t seqno, struct rule_collection *rules) |
15aaf599 | 5522 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
5523 | { |
5524 | ofproto_collect_ofmonitor_refresh_rules(m, seqno, rules); | |
5525 | } | |
5526 | ||
7b900689 SH |
5527 | static enum ofperr |
5528 | flow_monitor_delete(struct ofconn *ofconn, uint32_t id) | |
5529 | OVS_REQUIRES(ofproto_mutex) | |
5530 | { | |
5531 | struct ofmonitor *m; | |
5532 | enum ofperr error; | |
5533 | ||
5534 | m = ofmonitor_lookup(ofconn, id); | |
5535 | if (m) { | |
5536 | ofmonitor_destroy(m); | |
5537 | error = 0; | |
5538 | } else { | |
5539 | error = OFPERR_OFPMOFC_UNKNOWN_MONITOR; | |
5540 | } | |
5541 | ||
5542 | return error; | |
5543 | } | |
5544 | ||
2b07c8b1 | 5545 | static enum ofperr |
982697a4 | 5546 | handle_flow_monitor_request(struct ofconn *ofconn, const struct ofp_header *oh) |
15aaf599 | 5547 | OVS_EXCLUDED(ofproto_mutex) |
2b07c8b1 BP |
5548 | { |
5549 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5550 | struct ofmonitor **monitors; | |
5551 | size_t n_monitors, allocated_monitors; | |
a8e547c1 | 5552 | struct rule_collection rules; |
ca6ba700 | 5553 | struct ovs_list replies; |
2b07c8b1 | 5554 | enum ofperr error; |
2b07c8b1 BP |
5555 | struct ofpbuf b; |
5556 | size_t i; | |
5557 | ||
982697a4 | 5558 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
2b07c8b1 BP |
5559 | monitors = NULL; |
5560 | n_monitors = allocated_monitors = 0; | |
15aaf599 BP |
5561 | |
5562 | ovs_mutex_lock(&ofproto_mutex); | |
2b07c8b1 BP |
5563 | for (;;) { |
5564 | struct ofputil_flow_monitor_request request; | |
5565 | struct ofmonitor *m; | |
5566 | int retval; | |
5567 | ||
5568 | retval = ofputil_decode_flow_monitor_request(&request, &b); | |
5569 | if (retval == EOF) { | |
5570 | break; | |
5571 | } else if (retval) { | |
5572 | error = retval; | |
5573 | goto error; | |
5574 | } | |
5575 | ||
5576 | if (request.table_id != 0xff | |
5577 | && request.table_id >= ofproto->n_tables) { | |
5578 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
5579 | goto error; | |
5580 | } | |
5581 | ||
5582 | error = ofmonitor_create(&request, ofconn, &m); | |
5583 | if (error) { | |
5584 | goto error; | |
5585 | } | |
5586 | ||
5587 | if (n_monitors >= allocated_monitors) { | |
5588 | monitors = x2nrealloc(monitors, &allocated_monitors, | |
5589 | sizeof *monitors); | |
5590 | } | |
5591 | monitors[n_monitors++] = m; | |
5592 | } | |
5593 | ||
a8e547c1 | 5594 | rule_collection_init(&rules); |
2b07c8b1 BP |
5595 | for (i = 0; i < n_monitors; i++) { |
5596 | ofproto_collect_ofmonitor_initial_rules(monitors[i], &rules); | |
5597 | } | |
5598 | ||
982697a4 | 5599 | ofpmp_init(&replies, oh); |
2b07c8b1 | 5600 | ofmonitor_compose_refresh_updates(&rules, &replies); |
15aaf599 BP |
5601 | ovs_mutex_unlock(&ofproto_mutex); |
5602 | ||
a8e547c1 BP |
5603 | rule_collection_destroy(&rules); |
5604 | ||
2b07c8b1 | 5605 | ofconn_send_replies(ofconn, &replies); |
2b07c8b1 BP |
5606 | free(monitors); |
5607 | ||
5608 | return 0; | |
5609 | ||
5610 | error: | |
5611 | for (i = 0; i < n_monitors; i++) { | |
5612 | ofmonitor_destroy(monitors[i]); | |
5613 | } | |
5614 | free(monitors); | |
4cd1bc9d BP |
5615 | ovs_mutex_unlock(&ofproto_mutex); |
5616 | ||
2b07c8b1 BP |
5617 | return error; |
5618 | } | |
5619 | ||
5620 | static enum ofperr | |
5621 | handle_flow_monitor_cancel(struct ofconn *ofconn, const struct ofp_header *oh) | |
15aaf599 | 5622 | OVS_EXCLUDED(ofproto_mutex) |
2b07c8b1 | 5623 | { |
15aaf599 | 5624 | enum ofperr error; |
2b07c8b1 BP |
5625 | uint32_t id; |
5626 | ||
5627 | id = ofputil_decode_flow_monitor_cancel(oh); | |
15aaf599 BP |
5628 | |
5629 | ovs_mutex_lock(&ofproto_mutex); | |
7b900689 | 5630 | error = flow_monitor_delete(ofconn, id); |
15aaf599 | 5631 | ovs_mutex_unlock(&ofproto_mutex); |
2b07c8b1 | 5632 | |
15aaf599 | 5633 | return error; |
2b07c8b1 BP |
5634 | } |
5635 | ||
9cae45dc JR |
5636 | /* Meters implementation. |
5637 | * | |
5638 | * Meter table entry, indexed by the OpenFlow meter_id. | |
9cae45dc JR |
5639 | * 'created' is used to compute the duration for meter stats. |
5640 | * 'list rules' is needed so that we can delete the dependent rules when the | |
5641 | * meter table entry is deleted. | |
5642 | * 'provider_meter_id' is for the provider's private use. | |
5643 | */ | |
5644 | struct meter { | |
5645 | long long int created; /* Time created. */ | |
ca6ba700 | 5646 | struct ovs_list rules; /* List of "struct rule_dpif"s. */ |
9cae45dc JR |
5647 | ofproto_meter_id provider_meter_id; |
5648 | uint16_t flags; /* Meter flags. */ | |
5649 | uint16_t n_bands; /* Number of meter bands. */ | |
5650 | struct ofputil_meter_band *bands; | |
5651 | }; | |
5652 | ||
5653 | /* | |
5654 | * This is used in instruction validation at flow set-up time, | |
5655 | * as flows may not use non-existing meters. | |
9cae45dc JR |
5656 | * Return value of UINT32_MAX signifies an invalid meter. |
5657 | */ | |
65efd2ab JR |
5658 | static uint32_t |
5659 | get_provider_meter_id(const struct ofproto *ofproto, uint32_t of_meter_id) | |
9cae45dc JR |
5660 | { |
5661 | if (of_meter_id && of_meter_id <= ofproto->meter_features.max_meters) { | |
5662 | const struct meter *meter = ofproto->meters[of_meter_id]; | |
5663 | if (meter) { | |
5664 | return meter->provider_meter_id.uint32; | |
5665 | } | |
5666 | } | |
5667 | return UINT32_MAX; | |
5668 | } | |
5669 | ||
062fea06 BP |
5670 | /* Finds the meter invoked by 'rule''s actions and adds 'rule' to the meter's |
5671 | * list of rules. */ | |
5672 | static void | |
5673 | meter_insert_rule(struct rule *rule) | |
5674 | { | |
5675 | const struct rule_actions *a = rule_get_actions(rule); | |
5676 | uint32_t meter_id = ofpacts_get_meter(a->ofpacts, a->ofpacts_len); | |
5677 | struct meter *meter = rule->ofproto->meters[meter_id]; | |
5678 | ||
5679 | list_insert(&meter->rules, &rule->meter_list_node); | |
5680 | } | |
5681 | ||
9cae45dc JR |
5682 | static void |
5683 | meter_update(struct meter *meter, const struct ofputil_meter_config *config) | |
5684 | { | |
5685 | free(meter->bands); | |
5686 | ||
5687 | meter->flags = config->flags; | |
5688 | meter->n_bands = config->n_bands; | |
5689 | meter->bands = xmemdup(config->bands, | |
5690 | config->n_bands * sizeof *meter->bands); | |
5691 | } | |
5692 | ||
5693 | static struct meter * | |
5694 | meter_create(const struct ofputil_meter_config *config, | |
5695 | ofproto_meter_id provider_meter_id) | |
5696 | { | |
5697 | struct meter *meter; | |
5698 | ||
5699 | meter = xzalloc(sizeof *meter); | |
5700 | meter->provider_meter_id = provider_meter_id; | |
5701 | meter->created = time_msec(); | |
5702 | list_init(&meter->rules); | |
5703 | ||
5704 | meter_update(meter, config); | |
5705 | ||
5706 | return meter; | |
5707 | } | |
5708 | ||
6b3f7f02 JR |
5709 | static void |
5710 | meter_delete(struct ofproto *ofproto, uint32_t first, uint32_t last) | |
15aaf599 | 5711 | OVS_REQUIRES(ofproto_mutex) |
6b3f7f02 JR |
5712 | { |
5713 | uint32_t mid; | |
5714 | for (mid = first; mid <= last; ++mid) { | |
5715 | struct meter *meter = ofproto->meters[mid]; | |
5716 | if (meter) { | |
5717 | ofproto->meters[mid] = NULL; | |
5718 | ofproto->ofproto_class->meter_del(ofproto, | |
5719 | meter->provider_meter_id); | |
5720 | free(meter->bands); | |
5721 | free(meter); | |
5722 | } | |
5723 | } | |
5724 | } | |
5725 | ||
9cae45dc JR |
5726 | static enum ofperr |
5727 | handle_add_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm) | |
5728 | { | |
5729 | ofproto_meter_id provider_meter_id = { UINT32_MAX }; | |
5730 | struct meter **meterp = &ofproto->meters[mm->meter.meter_id]; | |
5731 | enum ofperr error; | |
5732 | ||
5733 | if (*meterp) { | |
5734 | return OFPERR_OFPMMFC_METER_EXISTS; | |
5735 | } | |
5736 | ||
5737 | error = ofproto->ofproto_class->meter_set(ofproto, &provider_meter_id, | |
5738 | &mm->meter); | |
5739 | if (!error) { | |
5740 | ovs_assert(provider_meter_id.uint32 != UINT32_MAX); | |
5741 | *meterp = meter_create(&mm->meter, provider_meter_id); | |
5742 | } | |
f0f8c6c2 | 5743 | return error; |
9cae45dc JR |
5744 | } |
5745 | ||
5746 | static enum ofperr | |
5747 | handle_modify_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm) | |
5748 | { | |
5749 | struct meter *meter = ofproto->meters[mm->meter.meter_id]; | |
5750 | enum ofperr error; | |
e555eb7c | 5751 | uint32_t provider_meter_id; |
9cae45dc JR |
5752 | |
5753 | if (!meter) { | |
5754 | return OFPERR_OFPMMFC_UNKNOWN_METER; | |
5755 | } | |
5756 | ||
e555eb7c | 5757 | provider_meter_id = meter->provider_meter_id.uint32; |
9cae45dc JR |
5758 | error = ofproto->ofproto_class->meter_set(ofproto, |
5759 | &meter->provider_meter_id, | |
5760 | &mm->meter); | |
e555eb7c | 5761 | ovs_assert(meter->provider_meter_id.uint32 == provider_meter_id); |
9cae45dc JR |
5762 | if (!error) { |
5763 | meter_update(meter, &mm->meter); | |
5764 | } | |
5765 | return error; | |
5766 | } | |
5767 | ||
5768 | static enum ofperr | |
baae3d02 | 5769 | handle_delete_meter(struct ofconn *ofconn, struct ofputil_meter_mod *mm) |
15aaf599 | 5770 | OVS_EXCLUDED(ofproto_mutex) |
9cae45dc JR |
5771 | { |
5772 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5773 | uint32_t meter_id = mm->meter.meter_id; | |
a8e547c1 BP |
5774 | struct rule_collection rules; |
5775 | enum ofperr error = 0; | |
9cae45dc | 5776 | uint32_t first, last; |
9cae45dc JR |
5777 | |
5778 | if (meter_id == OFPM13_ALL) { | |
5779 | first = 1; | |
5780 | last = ofproto->meter_features.max_meters; | |
5781 | } else { | |
5782 | if (!meter_id || meter_id > ofproto->meter_features.max_meters) { | |
5783 | return 0; | |
5784 | } | |
5785 | first = last = meter_id; | |
5786 | } | |
5787 | ||
5788 | /* First delete the rules that use this meter. If any of those rules are | |
5789 | * currently being modified, postpone the whole operation until later. */ | |
a8e547c1 | 5790 | rule_collection_init(&rules); |
15aaf599 | 5791 | ovs_mutex_lock(&ofproto_mutex); |
9cae45dc JR |
5792 | for (meter_id = first; meter_id <= last; ++meter_id) { |
5793 | struct meter *meter = ofproto->meters[meter_id]; | |
5794 | if (meter && !list_is_empty(&meter->rules)) { | |
5795 | struct rule *rule; | |
5796 | ||
5797 | LIST_FOR_EACH (rule, meter_list_node, &meter->rules) { | |
a8e547c1 | 5798 | rule_collection_add(&rules, rule); |
9cae45dc JR |
5799 | } |
5800 | } | |
5801 | } | |
802f84ff | 5802 | delete_flows__(&rules, OFPRR_METER_DELETE, NULL); |
9cae45dc JR |
5803 | |
5804 | /* Delete the meters. */ | |
6b3f7f02 | 5805 | meter_delete(ofproto, first, last); |
9cae45dc | 5806 | |
15aaf599 | 5807 | ovs_mutex_unlock(&ofproto_mutex); |
a8e547c1 BP |
5808 | |
5809 | return error; | |
9cae45dc JR |
5810 | } |
5811 | ||
5812 | static enum ofperr | |
5813 | handle_meter_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
5814 | { | |
5815 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5816 | struct ofputil_meter_mod mm; | |
5817 | uint64_t bands_stub[256 / 8]; | |
5818 | struct ofpbuf bands; | |
5819 | uint32_t meter_id; | |
5820 | enum ofperr error; | |
5821 | ||
5822 | error = reject_slave_controller(ofconn); | |
5823 | if (error) { | |
5824 | return error; | |
5825 | } | |
5826 | ||
5827 | ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub); | |
5828 | ||
5829 | error = ofputil_decode_meter_mod(oh, &mm, &bands); | |
5830 | if (error) { | |
5831 | goto exit_free_bands; | |
5832 | } | |
5833 | ||
5834 | meter_id = mm.meter.meter_id; | |
5835 | ||
5836 | if (mm.command != OFPMC13_DELETE) { | |
5837 | /* Fails also when meters are not implemented by the provider. */ | |
b31e8700 | 5838 | if (meter_id == 0 || meter_id > OFPM13_MAX) { |
9cae45dc JR |
5839 | error = OFPERR_OFPMMFC_INVALID_METER; |
5840 | goto exit_free_bands; | |
b31e8700 JR |
5841 | } else if (meter_id > ofproto->meter_features.max_meters) { |
5842 | error = OFPERR_OFPMMFC_OUT_OF_METERS; | |
5843 | goto exit_free_bands; | |
9cae45dc JR |
5844 | } |
5845 | if (mm.meter.n_bands > ofproto->meter_features.max_bands) { | |
5846 | error = OFPERR_OFPMMFC_OUT_OF_BANDS; | |
5847 | goto exit_free_bands; | |
5848 | } | |
5849 | } | |
5850 | ||
5851 | switch (mm.command) { | |
5852 | case OFPMC13_ADD: | |
5853 | error = handle_add_meter(ofproto, &mm); | |
5854 | break; | |
5855 | ||
5856 | case OFPMC13_MODIFY: | |
5857 | error = handle_modify_meter(ofproto, &mm); | |
5858 | break; | |
5859 | ||
5860 | case OFPMC13_DELETE: | |
baae3d02 | 5861 | error = handle_delete_meter(ofconn, &mm); |
9cae45dc JR |
5862 | break; |
5863 | ||
5864 | default: | |
5865 | error = OFPERR_OFPMMFC_BAD_COMMAND; | |
5866 | break; | |
5867 | } | |
5868 | ||
5869 | exit_free_bands: | |
5870 | ofpbuf_uninit(&bands); | |
5871 | return error; | |
5872 | } | |
5873 | ||
5874 | static enum ofperr | |
5875 | handle_meter_features_request(struct ofconn *ofconn, | |
5876 | const struct ofp_header *request) | |
5877 | { | |
5878 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5879 | struct ofputil_meter_features features; | |
5880 | struct ofpbuf *b; | |
5881 | ||
5882 | if (ofproto->ofproto_class->meter_get_features) { | |
5883 | ofproto->ofproto_class->meter_get_features(ofproto, &features); | |
5884 | } else { | |
5885 | memset(&features, 0, sizeof features); | |
5886 | } | |
5887 | b = ofputil_encode_meter_features_reply(&features, request); | |
5888 | ||
5889 | ofconn_send_reply(ofconn, b); | |
5890 | return 0; | |
5891 | } | |
5892 | ||
5893 | static enum ofperr | |
5894 | handle_meter_request(struct ofconn *ofconn, const struct ofp_header *request, | |
5895 | enum ofptype type) | |
5896 | { | |
5897 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
ca6ba700 | 5898 | struct ovs_list replies; |
9cae45dc JR |
5899 | uint64_t bands_stub[256 / 8]; |
5900 | struct ofpbuf bands; | |
5901 | uint32_t meter_id, first, last; | |
5902 | ||
5903 | ofputil_decode_meter_request(request, &meter_id); | |
5904 | ||
5905 | if (meter_id == OFPM13_ALL) { | |
5906 | first = 1; | |
5907 | last = ofproto->meter_features.max_meters; | |
5908 | } else { | |
5909 | if (!meter_id || meter_id > ofproto->meter_features.max_meters || | |
5910 | !ofproto->meters[meter_id]) { | |
5911 | return OFPERR_OFPMMFC_UNKNOWN_METER; | |
5912 | } | |
5913 | first = last = meter_id; | |
5914 | } | |
5915 | ||
5916 | ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub); | |
5917 | ofpmp_init(&replies, request); | |
5918 | ||
5919 | for (meter_id = first; meter_id <= last; ++meter_id) { | |
5920 | struct meter *meter = ofproto->meters[meter_id]; | |
5921 | if (!meter) { | |
5922 | continue; /* Skip non-existing meters. */ | |
5923 | } | |
261bd854 | 5924 | if (type == OFPTYPE_METER_STATS_REQUEST) { |
9cae45dc JR |
5925 | struct ofputil_meter_stats stats; |
5926 | ||
5927 | stats.meter_id = meter_id; | |
5928 | ||
5929 | /* Provider sets the packet and byte counts, we do the rest. */ | |
5930 | stats.flow_count = list_size(&meter->rules); | |
5931 | calc_duration(meter->created, time_msec(), | |
5932 | &stats.duration_sec, &stats.duration_nsec); | |
5933 | stats.n_bands = meter->n_bands; | |
5934 | ofpbuf_clear(&bands); | |
5935 | stats.bands | |
5936 | = ofpbuf_put_uninit(&bands, | |
5937 | meter->n_bands * sizeof *stats.bands); | |
5938 | ||
5939 | if (!ofproto->ofproto_class->meter_get(ofproto, | |
5940 | meter->provider_meter_id, | |
5941 | &stats)) { | |
5942 | ofputil_append_meter_stats(&replies, &stats); | |
5943 | } | |
5944 | } else { /* type == OFPTYPE_METER_CONFIG_REQUEST */ | |
5945 | struct ofputil_meter_config config; | |
5946 | ||
5947 | config.meter_id = meter_id; | |
5948 | config.flags = meter->flags; | |
5949 | config.n_bands = meter->n_bands; | |
5950 | config.bands = meter->bands; | |
5951 | ofputil_append_meter_config(&replies, &config); | |
5952 | } | |
5953 | } | |
5954 | ||
5955 | ofconn_send_replies(ofconn, &replies); | |
5956 | ofpbuf_uninit(&bands); | |
5957 | return 0; | |
5958 | } | |
5959 | ||
3fc3b679 AZ |
5960 | static bool |
5961 | ofproto_group_lookup__(const struct ofproto *ofproto, uint32_t group_id, | |
5962 | struct ofgroup **group) | |
5963 | OVS_REQ_RDLOCK(ofproto->groups_rwlock) | |
7395c052 | 5964 | { |
7395c052 NZ |
5965 | HMAP_FOR_EACH_IN_BUCKET (*group, hmap_node, |
5966 | hash_int(group_id, 0), &ofproto->groups) { | |
5967 | if ((*group)->group_id == group_id) { | |
7395c052 NZ |
5968 | return true; |
5969 | } | |
5970 | } | |
3fc3b679 | 5971 | |
7395c052 NZ |
5972 | return false; |
5973 | } | |
5974 | ||
3fc3b679 AZ |
5975 | /* If the group exists, this function increments the groups's reference count. |
5976 | * | |
5977 | * Make sure to call ofproto_group_unref() after no longer needing to maintain | |
5978 | * a reference to the group. */ | |
5979 | bool | |
5980 | ofproto_group_lookup(const struct ofproto *ofproto, uint32_t group_id, | |
5981 | struct ofgroup **group) | |
7395c052 | 5982 | { |
3fc3b679 AZ |
5983 | bool found; |
5984 | ||
5985 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
5986 | found = ofproto_group_lookup__(ofproto, group_id, group); | |
5987 | if (found) { | |
5988 | ofproto_group_ref(*group); | |
7395c052 | 5989 | } |
3fc3b679 AZ |
5990 | ovs_rwlock_unlock(&ofproto->groups_rwlock); |
5991 | return found; | |
7395c052 NZ |
5992 | } |
5993 | ||
5994 | static bool | |
7e9f8266 | 5995 | ofproto_group_exists__(const struct ofproto *ofproto, uint32_t group_id) |
7395c052 NZ |
5996 | OVS_REQ_RDLOCK(ofproto->groups_rwlock) |
5997 | { | |
5998 | struct ofgroup *grp; | |
5999 | ||
6000 | HMAP_FOR_EACH_IN_BUCKET (grp, hmap_node, | |
6001 | hash_int(group_id, 0), &ofproto->groups) { | |
6002 | if (grp->group_id == group_id) { | |
6003 | return true; | |
6004 | } | |
6005 | } | |
6006 | return false; | |
6007 | } | |
6008 | ||
7e9f8266 BP |
6009 | static bool |
6010 | ofproto_group_exists(const struct ofproto *ofproto, uint32_t group_id) | |
6011 | OVS_EXCLUDED(ofproto->groups_rwlock) | |
6012 | { | |
6013 | bool exists; | |
6014 | ||
6015 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
6016 | exists = ofproto_group_exists__(ofproto, group_id); | |
6017 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
6018 | ||
6019 | return exists; | |
6020 | } | |
6021 | ||
732feb93 SH |
6022 | static uint32_t |
6023 | group_get_ref_count(struct ofgroup *group) | |
6024 | OVS_EXCLUDED(ofproto_mutex) | |
6025 | { | |
eaf004bd | 6026 | struct ofproto *ofproto = CONST_CAST(struct ofproto *, group->ofproto); |
732feb93 SH |
6027 | struct rule_criteria criteria; |
6028 | struct rule_collection rules; | |
6029 | struct match match; | |
6030 | enum ofperr error; | |
6031 | uint32_t count; | |
6032 | ||
6033 | match_init_catchall(&match); | |
2b7b1427 JR |
6034 | rule_criteria_init(&criteria, 0xff, &match, 0, CLS_MAX_VERSION, htonll(0), |
6035 | htonll(0), OFPP_ANY, group->group_id); | |
732feb93 SH |
6036 | ovs_mutex_lock(&ofproto_mutex); |
6037 | error = collect_rules_loose(ofproto, &criteria, &rules); | |
6038 | ovs_mutex_unlock(&ofproto_mutex); | |
6039 | rule_criteria_destroy(&criteria); | |
6040 | ||
6041 | count = !error && rules.n < UINT32_MAX ? rules.n : UINT32_MAX; | |
6042 | ||
6043 | rule_collection_destroy(&rules); | |
6044 | return count; | |
6045 | } | |
6046 | ||
7395c052 | 6047 | static void |
ca6ba700 | 6048 | append_group_stats(struct ofgroup *group, struct ovs_list *replies) |
7395c052 NZ |
6049 | { |
6050 | struct ofputil_group_stats ogs; | |
eaf004bd | 6051 | const struct ofproto *ofproto = group->ofproto; |
7395c052 NZ |
6052 | long long int now = time_msec(); |
6053 | int error; | |
6054 | ||
646b2a9c SH |
6055 | ogs.bucket_stats = xmalloc(group->n_buckets * sizeof *ogs.bucket_stats); |
6056 | ||
732feb93 SH |
6057 | /* Provider sets the packet and byte counts, we do the rest. */ |
6058 | ogs.ref_count = group_get_ref_count(group); | |
6059 | ogs.n_buckets = group->n_buckets; | |
6060 | ||
7395c052 NZ |
6061 | error = (ofproto->ofproto_class->group_get_stats |
6062 | ? ofproto->ofproto_class->group_get_stats(group, &ogs) | |
6063 | : EOPNOTSUPP); | |
6064 | if (error) { | |
7395c052 NZ |
6065 | ogs.packet_count = UINT64_MAX; |
6066 | ogs.byte_count = UINT64_MAX; | |
7395c052 NZ |
6067 | memset(ogs.bucket_stats, 0xff, |
6068 | ogs.n_buckets * sizeof *ogs.bucket_stats); | |
6069 | } | |
6070 | ||
6071 | ogs.group_id = group->group_id; | |
6072 | calc_duration(group->created, now, &ogs.duration_sec, &ogs.duration_nsec); | |
6073 | ||
6074 | ofputil_append_group_stats(replies, &ogs); | |
646b2a9c SH |
6075 | |
6076 | free(ogs.bucket_stats); | |
7395c052 NZ |
6077 | } |
6078 | ||
19187a71 BP |
6079 | static void |
6080 | handle_group_request(struct ofconn *ofconn, | |
6081 | const struct ofp_header *request, uint32_t group_id, | |
ca6ba700 | 6082 | void (*cb)(struct ofgroup *, struct ovs_list *replies)) |
7395c052 NZ |
6083 | { |
6084 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
7395c052 | 6085 | struct ofgroup *group; |
ca6ba700 | 6086 | struct ovs_list replies; |
7395c052 NZ |
6087 | |
6088 | ofpmp_init(&replies, request); | |
7395c052 NZ |
6089 | if (group_id == OFPG_ALL) { |
6090 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
6091 | HMAP_FOR_EACH (group, hmap_node, &ofproto->groups) { | |
19187a71 | 6092 | cb(group, &replies); |
7395c052 NZ |
6093 | } |
6094 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
6095 | } else { | |
6096 | if (ofproto_group_lookup(ofproto, group_id, &group)) { | |
19187a71 | 6097 | cb(group, &replies); |
809c7548 | 6098 | ofproto_group_unref(group); |
7395c052 NZ |
6099 | } |
6100 | } | |
7395c052 | 6101 | ofconn_send_replies(ofconn, &replies); |
7395c052 NZ |
6102 | } |
6103 | ||
6104 | static enum ofperr | |
19187a71 BP |
6105 | handle_group_stats_request(struct ofconn *ofconn, |
6106 | const struct ofp_header *request) | |
7395c052 | 6107 | { |
19187a71 BP |
6108 | uint32_t group_id; |
6109 | enum ofperr error; | |
7395c052 | 6110 | |
19187a71 BP |
6111 | error = ofputil_decode_group_stats_request(request, &group_id); |
6112 | if (error) { | |
6113 | return error; | |
7395c052 | 6114 | } |
7395c052 | 6115 | |
19187a71 BP |
6116 | handle_group_request(ofconn, request, group_id, append_group_stats); |
6117 | return 0; | |
6118 | } | |
6119 | ||
6120 | static void | |
ca6ba700 | 6121 | append_group_desc(struct ofgroup *group, struct ovs_list *replies) |
19187a71 BP |
6122 | { |
6123 | struct ofputil_group_desc gds; | |
7395c052 | 6124 | |
19187a71 BP |
6125 | gds.group_id = group->group_id; |
6126 | gds.type = group->type; | |
53eb84a5 SH |
6127 | gds.props = group->props; |
6128 | ||
19187a71 BP |
6129 | ofputil_append_group_desc_reply(&gds, &group->buckets, replies); |
6130 | } | |
6131 | ||
6132 | static enum ofperr | |
6133 | handle_group_desc_stats_request(struct ofconn *ofconn, | |
6134 | const struct ofp_header *request) | |
6135 | { | |
6136 | handle_group_request(ofconn, request, | |
6137 | ofputil_decode_group_desc_request(request), | |
6138 | append_group_desc); | |
7395c052 NZ |
6139 | return 0; |
6140 | } | |
6141 | ||
6142 | static enum ofperr | |
6143 | handle_group_features_stats_request(struct ofconn *ofconn, | |
6144 | const struct ofp_header *request) | |
6145 | { | |
6146 | struct ofproto *p = ofconn_get_ofproto(ofconn); | |
6147 | struct ofpbuf *msg; | |
6148 | ||
6149 | msg = ofputil_encode_group_features_reply(&p->ogf, request); | |
6150 | if (msg) { | |
6151 | ofconn_send_reply(ofconn, msg); | |
6152 | } | |
6153 | ||
6154 | return 0; | |
6155 | } | |
6156 | ||
e8f9a7bb VG |
6157 | static enum ofperr |
6158 | handle_queue_get_config_request(struct ofconn *ofconn, | |
6159 | const struct ofp_header *oh) | |
6160 | { | |
6161 | struct ofproto *p = ofconn_get_ofproto(ofconn); | |
6162 | struct netdev_queue_dump queue_dump; | |
6163 | struct ofport *ofport; | |
6164 | unsigned int queue_id; | |
6165 | struct ofpbuf *reply; | |
6166 | struct smap details; | |
6167 | ofp_port_t request; | |
6168 | enum ofperr error; | |
6169 | ||
6170 | error = ofputil_decode_queue_get_config_request(oh, &request); | |
6171 | if (error) { | |
6172 | return error; | |
6173 | } | |
6174 | ||
6175 | ofport = ofproto_get_port(p, request); | |
6176 | if (!ofport) { | |
6177 | return OFPERR_OFPQOFC_BAD_PORT; | |
6178 | } | |
6179 | ||
6180 | reply = ofputil_encode_queue_get_config_reply(oh); | |
6181 | ||
6182 | smap_init(&details); | |
6183 | NETDEV_QUEUE_FOR_EACH (&queue_id, &details, &queue_dump, ofport->netdev) { | |
6184 | struct ofputil_queue_config queue; | |
6185 | ||
6186 | /* None of the existing queues have compatible properties, so we | |
6187 | * hard-code omitting min_rate and max_rate. */ | |
6188 | queue.queue_id = queue_id; | |
6189 | queue.min_rate = UINT16_MAX; | |
6190 | queue.max_rate = UINT16_MAX; | |
6191 | ofputil_append_queue_get_config_reply(reply, &queue); | |
6192 | } | |
6193 | smap_destroy(&details); | |
6194 | ||
6195 | ofconn_send_reply(ofconn, reply); | |
6196 | ||
6197 | return 0; | |
6198 | } | |
6199 | ||
809c7548 RW |
6200 | static enum ofperr |
6201 | init_group(struct ofproto *ofproto, struct ofputil_group_mod *gm, | |
6202 | struct ofgroup **ofgroup) | |
6203 | { | |
6204 | enum ofperr error; | |
eaf004bd | 6205 | const long long int now = time_msec(); |
809c7548 RW |
6206 | |
6207 | if (gm->group_id > OFPG_MAX) { | |
6208 | return OFPERR_OFPGMFC_INVALID_GROUP; | |
6209 | } | |
6210 | if (gm->type > OFPGT11_FF) { | |
6211 | return OFPERR_OFPGMFC_BAD_TYPE; | |
6212 | } | |
6213 | ||
6214 | *ofgroup = ofproto->ofproto_class->group_alloc(); | |
6215 | if (!*ofgroup) { | |
6216 | VLOG_WARN_RL(&rl, "%s: failed to allocate group", ofproto->name); | |
6217 | return OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
6218 | } | |
6219 | ||
eaf004bd AZ |
6220 | (*ofgroup)->ofproto = ofproto; |
6221 | *CONST_CAST(uint32_t *, &((*ofgroup)->group_id)) = gm->group_id; | |
6222 | *CONST_CAST(enum ofp11_group_type *, &(*ofgroup)->type) = gm->type; | |
6223 | *CONST_CAST(long long int *, &((*ofgroup)->created)) = now; | |
6224 | *CONST_CAST(long long int *, &((*ofgroup)->modified)) = now; | |
809c7548 RW |
6225 | ovs_refcount_init(&(*ofgroup)->ref_count); |
6226 | ||
6227 | list_move(&(*ofgroup)->buckets, &gm->buckets); | |
eaf004bd AZ |
6228 | *CONST_CAST(uint32_t *, &(*ofgroup)->n_buckets) = |
6229 | list_size(&(*ofgroup)->buckets); | |
809c7548 | 6230 | |
bc65c25a SH |
6231 | memcpy(CONST_CAST(struct ofputil_group_props *, &(*ofgroup)->props), |
6232 | &gm->props, sizeof (struct ofputil_group_props)); | |
6233 | ||
809c7548 RW |
6234 | /* Construct called BEFORE any locks are held. */ |
6235 | error = ofproto->ofproto_class->group_construct(*ofgroup); | |
6236 | if (error) { | |
6237 | ofputil_bucket_list_destroy(&(*ofgroup)->buckets); | |
6238 | ofproto->ofproto_class->group_dealloc(*ofgroup); | |
6239 | } | |
6240 | return error; | |
6241 | } | |
6242 | ||
6c5b90ce BP |
6243 | /* Implements the OFPGC11_ADD operation specified by 'gm', adding a group to |
6244 | * 'ofproto''s group table. Returns 0 on success or an OpenFlow error code on | |
6245 | * failure. */ | |
7395c052 NZ |
6246 | static enum ofperr |
6247 | add_group(struct ofproto *ofproto, struct ofputil_group_mod *gm) | |
6248 | { | |
6249 | struct ofgroup *ofgroup; | |
6250 | enum ofperr error; | |
6251 | ||
7395c052 | 6252 | /* Allocate new group and initialize it. */ |
809c7548 | 6253 | error = init_group(ofproto, gm, &ofgroup); |
7395c052 | 6254 | if (error) { |
809c7548 | 6255 | return error; |
7395c052 NZ |
6256 | } |
6257 | ||
6258 | /* We wrlock as late as possible to minimize the time we jam any other | |
6259 | * threads: No visible state changes before acquiring the lock. */ | |
6260 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
6261 | ||
6262 | if (ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) { | |
6263 | error = OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
6264 | goto unlock_out; | |
6265 | } | |
6266 | ||
7e9f8266 | 6267 | if (ofproto_group_exists__(ofproto, gm->group_id)) { |
7395c052 NZ |
6268 | error = OFPERR_OFPGMFC_GROUP_EXISTS; |
6269 | goto unlock_out; | |
6270 | } | |
6271 | ||
6272 | if (!error) { | |
6273 | /* Insert new group. */ | |
6274 | hmap_insert(&ofproto->groups, &ofgroup->hmap_node, | |
6275 | hash_int(ofgroup->group_id, 0)); | |
6276 | ofproto->n_groups[ofgroup->type]++; | |
6277 | ||
6278 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
6279 | return error; | |
6280 | } | |
6281 | ||
6282 | unlock_out: | |
6283 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
6284 | ofproto->ofproto_class->group_destruct(ofgroup); | |
7395c052 NZ |
6285 | ofputil_bucket_list_destroy(&ofgroup->buckets); |
6286 | ofproto->ofproto_class->group_dealloc(ofgroup); | |
6287 | ||
6288 | return error; | |
6289 | } | |
6290 | ||
fce4730c SH |
6291 | /* Adds all of the buckets from 'ofgroup' to 'new_ofgroup'. The buckets |
6292 | * already in 'new_ofgroup' will be placed just after the (copy of the) bucket | |
6293 | * in 'ofgroup' with bucket ID 'command_bucket_id'. Special | |
6294 | * 'command_bucket_id' values OFPG15_BUCKET_FIRST and OFPG15_BUCKET_LAST are | |
6295 | * also honored. */ | |
6296 | static enum ofperr | |
6297 | copy_buckets_for_insert_bucket(const struct ofgroup *ofgroup, | |
6298 | struct ofgroup *new_ofgroup, | |
6299 | uint32_t command_bucket_id) | |
6300 | { | |
6301 | struct ofputil_bucket *last = NULL; | |
6302 | ||
6303 | if (command_bucket_id <= OFPG15_BUCKET_MAX) { | |
6304 | /* Check here to ensure that a bucket corresponding to | |
6305 | * command_bucket_id exists in the old bucket list. | |
6306 | * | |
6307 | * The subsequent search of below of new_ofgroup covers | |
6308 | * both buckets in the old bucket list and buckets added | |
6309 | * by the insert buckets group mod message this function processes. */ | |
6310 | if (!ofputil_bucket_find(&ofgroup->buckets, command_bucket_id)) { | |
6311 | return OFPERR_OFPGMFC_UNKNOWN_BUCKET; | |
6312 | } | |
6313 | ||
6314 | if (!list_is_empty(&new_ofgroup->buckets)) { | |
6315 | last = ofputil_bucket_list_back(&new_ofgroup->buckets); | |
6316 | } | |
6317 | } | |
6318 | ||
6319 | ofputil_bucket_clone_list(&new_ofgroup->buckets, &ofgroup->buckets, NULL); | |
6320 | ||
6321 | if (ofputil_bucket_check_duplicate_id(&ofgroup->buckets)) { | |
6322 | VLOG_WARN_RL(&rl, "Duplicate bucket id"); | |
6323 | return OFPERR_OFPGMFC_BUCKET_EXISTS; | |
6324 | } | |
6325 | ||
6326 | /* Rearrange list according to command_bucket_id */ | |
6327 | if (command_bucket_id == OFPG15_BUCKET_LAST) { | |
6328 | struct ofputil_bucket *new_first; | |
6329 | const struct ofputil_bucket *first; | |
6330 | ||
6331 | first = ofputil_bucket_list_front(&ofgroup->buckets); | |
6332 | new_first = ofputil_bucket_find(&new_ofgroup->buckets, | |
6333 | first->bucket_id); | |
6334 | ||
6335 | list_splice(new_ofgroup->buckets.next, &new_first->list_node, | |
6336 | &new_ofgroup->buckets); | |
6337 | } else if (command_bucket_id <= OFPG15_BUCKET_MAX && last) { | |
6338 | struct ofputil_bucket *after; | |
6339 | ||
6340 | /* Presence of bucket is checked above so after should never be NULL */ | |
6341 | after = ofputil_bucket_find(&new_ofgroup->buckets, command_bucket_id); | |
6342 | ||
6343 | list_splice(after->list_node.next, new_ofgroup->buckets.next, | |
6344 | last->list_node.next); | |
6345 | } | |
6346 | ||
6347 | return 0; | |
6348 | } | |
6349 | ||
6350 | /* Appends all of the a copy of all the buckets from 'ofgroup' to 'new_ofgroup' | |
6351 | * with the exception of the bucket whose bucket id is 'command_bucket_id'. | |
6352 | * Special 'command_bucket_id' values OFPG15_BUCKET_FIRST, OFPG15_BUCKET_LAST | |
6353 | * and OFPG15_BUCKET_ALL are also honored. */ | |
6354 | static enum ofperr | |
6355 | copy_buckets_for_remove_bucket(const struct ofgroup *ofgroup, | |
6356 | struct ofgroup *new_ofgroup, | |
6357 | uint32_t command_bucket_id) | |
6358 | { | |
6359 | const struct ofputil_bucket *skip = NULL; | |
6360 | ||
6361 | if (command_bucket_id == OFPG15_BUCKET_ALL) { | |
6362 | return 0; | |
6363 | } | |
6364 | ||
6365 | if (command_bucket_id == OFPG15_BUCKET_FIRST) { | |
6366 | if (!list_is_empty(&ofgroup->buckets)) { | |
6367 | skip = ofputil_bucket_list_front(&ofgroup->buckets); | |
6368 | } | |
6369 | } else if (command_bucket_id == OFPG15_BUCKET_LAST) { | |
6370 | if (!list_is_empty(&ofgroup->buckets)) { | |
6371 | skip = ofputil_bucket_list_back(&ofgroup->buckets); | |
6372 | } | |
6373 | } else { | |
6374 | skip = ofputil_bucket_find(&ofgroup->buckets, command_bucket_id); | |
6375 | if (!skip) { | |
6376 | return OFPERR_OFPGMFC_UNKNOWN_BUCKET; | |
6377 | } | |
6378 | } | |
6379 | ||
6380 | ofputil_bucket_clone_list(&new_ofgroup->buckets, &ofgroup->buckets, skip); | |
6381 | ||
6382 | return 0; | |
6383 | } | |
6384 | ||
6385 | /* Implements OFPGC11_MODIFY, OFPGC15_INSERT_BUCKET and | |
6386 | * OFPGC15_REMOVE_BUCKET. Returns 0 on success or an OpenFlow error code | |
6c5b90ce | 6387 | * on failure. |
7395c052 | 6388 | * |
809c7548 RW |
6389 | * Note that the group is re-created and then replaces the old group in |
6390 | * ofproto's ofgroup hash map. Thus, the group is never altered while users of | |
6c5b90ce | 6391 | * the xlate module hold a pointer to the group. */ |
7395c052 NZ |
6392 | static enum ofperr |
6393 | modify_group(struct ofproto *ofproto, struct ofputil_group_mod *gm) | |
6394 | { | |
809c7548 | 6395 | struct ofgroup *ofgroup, *new_ofgroup, *retiring; |
7395c052 NZ |
6396 | enum ofperr error; |
6397 | ||
809c7548 RW |
6398 | error = init_group(ofproto, gm, &new_ofgroup); |
6399 | if (error) { | |
6400 | return error; | |
7395c052 NZ |
6401 | } |
6402 | ||
809c7548 | 6403 | retiring = new_ofgroup; |
7395c052 | 6404 | |
3fc3b679 AZ |
6405 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); |
6406 | if (!ofproto_group_lookup__(ofproto, gm->group_id, &ofgroup)) { | |
7395c052 | 6407 | error = OFPERR_OFPGMFC_UNKNOWN_GROUP; |
809c7548 | 6408 | goto out; |
7395c052 | 6409 | } |
809c7548 RW |
6410 | |
6411 | /* Ofproto's group write lock is held now. */ | |
7395c052 NZ |
6412 | if (ofgroup->type != gm->type |
6413 | && ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) { | |
6414 | error = OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
809c7548 | 6415 | goto out; |
7395c052 NZ |
6416 | } |
6417 | ||
fce4730c SH |
6418 | /* Manipulate bucket list for bucket commands */ |
6419 | if (gm->command == OFPGC15_INSERT_BUCKET) { | |
6420 | error = copy_buckets_for_insert_bucket(ofgroup, new_ofgroup, | |
6421 | gm->command_bucket_id); | |
6422 | } else if (gm->command == OFPGC15_REMOVE_BUCKET) { | |
6423 | error = copy_buckets_for_remove_bucket(ofgroup, new_ofgroup, | |
6424 | gm->command_bucket_id); | |
6425 | } | |
6426 | if (error) { | |
6427 | goto out; | |
6428 | } | |
6429 | ||
809c7548 | 6430 | /* The group creation time does not change during modification. */ |
eaf004bd AZ |
6431 | *CONST_CAST(long long int *, &(new_ofgroup->created)) = ofgroup->created; |
6432 | *CONST_CAST(long long int *, &(new_ofgroup->modified)) = time_msec(); | |
7395c052 | 6433 | |
809c7548 RW |
6434 | error = ofproto->ofproto_class->group_modify(new_ofgroup); |
6435 | if (error) { | |
6436 | goto out; | |
6437 | } | |
7395c052 | 6438 | |
809c7548 RW |
6439 | retiring = ofgroup; |
6440 | /* Replace ofgroup in ofproto's groups hash map with new_ofgroup. */ | |
6441 | hmap_remove(&ofproto->groups, &ofgroup->hmap_node); | |
6442 | hmap_insert(&ofproto->groups, &new_ofgroup->hmap_node, | |
6443 | hash_int(new_ofgroup->group_id, 0)); | |
6444 | if (ofgroup->type != new_ofgroup->type) { | |
6445 | ofproto->n_groups[ofgroup->type]--; | |
6446 | ofproto->n_groups[new_ofgroup->type]++; | |
7395c052 NZ |
6447 | } |
6448 | ||
809c7548 RW |
6449 | out: |
6450 | ofproto_group_unref(retiring); | |
7395c052 | 6451 | ovs_rwlock_unlock(&ofproto->groups_rwlock); |
7395c052 NZ |
6452 | return error; |
6453 | } | |
6454 | ||
6455 | static void | |
6456 | delete_group__(struct ofproto *ofproto, struct ofgroup *ofgroup) | |
6457 | OVS_RELEASES(ofproto->groups_rwlock) | |
6458 | { | |
276f6518 SH |
6459 | struct match match; |
6460 | struct ofputil_flow_mod fm; | |
6461 | ||
6462 | /* Delete all flow entries containing this group in a group action */ | |
6463 | match_init_catchall(&match); | |
6464 | flow_mod_init(&fm, &match, 0, NULL, 0, OFPFC_DELETE); | |
cc40d06b | 6465 | fm.delete_reason = OFPRR_GROUP_DELETE; |
276f6518 | 6466 | fm.out_group = ofgroup->group_id; |
baae3d02 | 6467 | handle_flow_mod__(ofproto, &fm, NULL); |
276f6518 | 6468 | |
7395c052 NZ |
6469 | hmap_remove(&ofproto->groups, &ofgroup->hmap_node); |
6470 | /* No-one can find this group any more. */ | |
6471 | ofproto->n_groups[ofgroup->type]--; | |
6472 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
809c7548 | 6473 | ofproto_group_unref(ofgroup); |
7395c052 NZ |
6474 | } |
6475 | ||
6c5b90ce | 6476 | /* Implements OFPGC11_DELETE. */ |
7395c052 NZ |
6477 | static void |
6478 | delete_group(struct ofproto *ofproto, uint32_t group_id) | |
6479 | { | |
6480 | struct ofgroup *ofgroup; | |
6481 | ||
6482 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
6483 | if (group_id == OFPG_ALL) { | |
6484 | for (;;) { | |
6485 | struct hmap_node *node = hmap_first(&ofproto->groups); | |
6486 | if (!node) { | |
6487 | break; | |
6488 | } | |
6489 | ofgroup = CONTAINER_OF(node, struct ofgroup, hmap_node); | |
6490 | delete_group__(ofproto, ofgroup); | |
6491 | /* Lock for each node separately, so that we will not jam the | |
6492 | * other threads for too long time. */ | |
6493 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
6494 | } | |
6495 | } else { | |
6496 | HMAP_FOR_EACH_IN_BUCKET (ofgroup, hmap_node, | |
6497 | hash_int(group_id, 0), &ofproto->groups) { | |
6498 | if (ofgroup->group_id == group_id) { | |
6499 | delete_group__(ofproto, ofgroup); | |
6500 | return; | |
6501 | } | |
6502 | } | |
6503 | } | |
6504 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
6505 | } | |
6506 | ||
daab0ae6 BP |
6507 | /* Delete all groups from 'ofproto'. |
6508 | * | |
6509 | * This is intended for use within an ofproto provider's 'destruct' | |
6510 | * function. */ | |
6511 | void | |
6512 | ofproto_group_delete_all(struct ofproto *ofproto) | |
6513 | { | |
6514 | delete_group(ofproto, OFPG_ALL); | |
6515 | } | |
6516 | ||
7395c052 NZ |
6517 | static enum ofperr |
6518 | handle_group_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
6519 | { | |
6520 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
6521 | struct ofputil_group_mod gm; | |
6522 | enum ofperr error; | |
6523 | ||
6524 | error = reject_slave_controller(ofconn); | |
6525 | if (error) { | |
6526 | return error; | |
6527 | } | |
6528 | ||
6529 | error = ofputil_decode_group_mod(oh, &gm); | |
6530 | if (error) { | |
6531 | return error; | |
6532 | } | |
6533 | ||
6534 | switch (gm.command) { | |
6535 | case OFPGC11_ADD: | |
6536 | return add_group(ofproto, &gm); | |
6537 | ||
6538 | case OFPGC11_MODIFY: | |
6539 | return modify_group(ofproto, &gm); | |
6540 | ||
6541 | case OFPGC11_DELETE: | |
6542 | delete_group(ofproto, gm.group_id); | |
6543 | return 0; | |
6544 | ||
fce4730c SH |
6545 | case OFPGC15_INSERT_BUCKET: |
6546 | return modify_group(ofproto, &gm); | |
6547 | ||
6548 | case OFPGC15_REMOVE_BUCKET: | |
6549 | return modify_group(ofproto, &gm); | |
6550 | ||
7395c052 NZ |
6551 | default: |
6552 | if (gm.command > OFPGC11_DELETE) { | |
6553 | VLOG_WARN_RL(&rl, "%s: Invalid group_mod command type %d", | |
6554 | ofproto->name, gm.command); | |
6555 | } | |
6556 | return OFPERR_OFPGMFC_BAD_COMMAND; | |
6557 | } | |
6558 | } | |
6559 | ||
3c1bb396 BP |
6560 | enum ofputil_table_miss |
6561 | ofproto_table_get_miss_config(const struct ofproto *ofproto, uint8_t table_id) | |
6d328fa2 | 6562 | { |
3c1bb396 | 6563 | enum ofputil_table_miss value; |
afcea9ea JR |
6564 | |
6565 | atomic_read_relaxed(&ofproto->tables[table_id].miss_config, &value); | |
3c1bb396 | 6566 | return value; |
6d328fa2 SH |
6567 | } |
6568 | ||
67761761 SH |
6569 | static enum ofperr |
6570 | table_mod(struct ofproto *ofproto, const struct ofputil_table_mod *tm) | |
6571 | { | |
3c1bb396 | 6572 | if (!check_table_id(ofproto, tm->table_id)) { |
67761761 | 6573 | return OFPERR_OFPTMFC_BAD_TABLE; |
3c1bb396 BP |
6574 | } else if (tm->miss_config != OFPUTIL_TABLE_MISS_DEFAULT) { |
6575 | if (tm->table_id == OFPTT_ALL) { | |
6576 | int i; | |
6577 | for (i = 0; i < ofproto->n_tables; i++) { | |
afcea9ea JR |
6578 | atomic_store_relaxed(&ofproto->tables[i].miss_config, |
6579 | tm->miss_config); | |
3c1bb396 BP |
6580 | } |
6581 | } else { | |
afcea9ea JR |
6582 | atomic_store_relaxed(&ofproto->tables[tm->table_id].miss_config, |
6583 | tm->miss_config); | |
3c1bb396 | 6584 | } |
67761761 | 6585 | } |
67761761 SH |
6586 | return 0; |
6587 | } | |
6588 | ||
918f2b82 AZ |
6589 | static enum ofperr |
6590 | handle_table_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
6591 | { | |
67761761 | 6592 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
918f2b82 AZ |
6593 | struct ofputil_table_mod tm; |
6594 | enum ofperr error; | |
6595 | ||
6596 | error = reject_slave_controller(ofconn); | |
6597 | if (error) { | |
6598 | return error; | |
6599 | } | |
6600 | ||
6601 | error = ofputil_decode_table_mod(oh, &tm); | |
6602 | if (error) { | |
6603 | return error; | |
6604 | } | |
6605 | ||
67761761 | 6606 | return table_mod(ofproto, &tm); |
918f2b82 AZ |
6607 | } |
6608 | ||
777af88d | 6609 | static enum ofperr |
4fcb2083 | 6610 | do_bundle_flow_mod_start(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
1f42be1c JR |
6611 | struct ofp_bundle_entry *be) |
6612 | OVS_REQUIRES(ofproto_mutex) | |
777af88d | 6613 | { |
1f42be1c JR |
6614 | switch (fm->command) { |
6615 | case OFPFC_ADD: | |
39c94593 JR |
6616 | return add_flow_start(ofproto, fm, &be->old_rules.stub[0], |
6617 | &be->new_rules.stub[0]); | |
1f42be1c | 6618 | case OFPFC_MODIFY: |
39c94593 JR |
6619 | return modify_flows_start_loose(ofproto, fm, &be->old_rules, |
6620 | &be->new_rules); | |
1f42be1c | 6621 | case OFPFC_MODIFY_STRICT: |
39c94593 JR |
6622 | return modify_flow_start_strict(ofproto, fm, &be->old_rules, |
6623 | &be->new_rules); | |
1f42be1c | 6624 | case OFPFC_DELETE: |
39c94593 | 6625 | return delete_flows_start_loose(ofproto, fm, &be->old_rules); |
1f42be1c JR |
6626 | |
6627 | case OFPFC_DELETE_STRICT: | |
39c94593 | 6628 | return delete_flow_start_strict(ofproto, fm, &be->old_rules); |
1f42be1c JR |
6629 | } |
6630 | ||
6631 | return OFPERR_OFPFMFC_BAD_COMMAND; | |
6632 | } | |
6633 | ||
6634 | static void | |
6635 | do_bundle_flow_mod_revert(struct ofproto *ofproto, struct ofputil_flow_mod *fm, | |
6636 | struct ofp_bundle_entry *be) | |
6637 | OVS_REQUIRES(ofproto_mutex) | |
6638 | { | |
6639 | switch (fm->command) { | |
6640 | case OFPFC_ADD: | |
6787a49f JR |
6641 | add_flow_revert(ofproto, fm, be->old_rules.stub[0], |
6642 | be->new_rules.stub[0]); | |
1f42be1c JR |
6643 | break; |
6644 | ||
6645 | case OFPFC_MODIFY: | |
6646 | case OFPFC_MODIFY_STRICT: | |
6787a49f | 6647 | modify_flows_revert(ofproto, fm, &be->old_rules, &be->new_rules); |
1f42be1c JR |
6648 | break; |
6649 | ||
6650 | case OFPFC_DELETE: | |
6651 | case OFPFC_DELETE_STRICT: | |
39c94593 | 6652 | delete_flows_revert(ofproto, &be->old_rules); |
1f42be1c JR |
6653 | break; |
6654 | ||
6655 | default: | |
6656 | break; | |
6657 | } | |
6658 | } | |
6659 | ||
6660 | static void | |
6661 | do_bundle_flow_mod_finish(struct ofproto *ofproto, struct ofputil_flow_mod *fm, | |
6662 | const struct flow_mod_requester *req, | |
6663 | struct ofp_bundle_entry *be) | |
6664 | OVS_REQUIRES(ofproto_mutex) | |
6665 | { | |
6666 | switch (fm->command) { | |
6667 | case OFPFC_ADD: | |
39c94593 JR |
6668 | add_flow_finish(ofproto, fm, req, be->old_rules.stub[0], |
6669 | be->new_rules.stub[0]); | |
1f42be1c JR |
6670 | break; |
6671 | ||
6672 | case OFPFC_MODIFY: | |
6673 | case OFPFC_MODIFY_STRICT: | |
39c94593 | 6674 | modify_flows_finish(ofproto, fm, req, &be->old_rules, &be->new_rules); |
1f42be1c JR |
6675 | break; |
6676 | ||
6677 | case OFPFC_DELETE: | |
6678 | case OFPFC_DELETE_STRICT: | |
39c94593 | 6679 | delete_flows_finish(ofproto, fm, req, &be->old_rules); |
1f42be1c JR |
6680 | break; |
6681 | ||
6682 | default: | |
6683 | break; | |
6684 | } | |
6685 | } | |
6686 | ||
39c94593 JR |
6687 | /* Commit phases (all while locking ofproto_mutex): |
6688 | * | |
6689 | * 1. Begin: Gather resources and make changes visible in the next version. | |
6690 | * - Mark affected rules for removal in the next version. | |
6691 | * - Create new replacement rules, make visible in the next | |
6692 | * version. | |
6693 | * - Do not send any events or notifications. | |
6694 | * | |
6695 | * 2. Revert: Fail if any errors are found. After this point no errors are | |
6696 | * possible. No visible changes were made, so rollback is minimal (remove | |
6697 | * added invisible rules, restore visibility of rules marked for removal). | |
6698 | * | |
1c38055d JR |
6699 | * 3. Finish: Make the changes visible for lookups. Insert replacement rules to |
6700 | * the ofproto provider. Remove replaced and deleted rules from ofproto data | |
6701 | * structures, and Schedule postponed removal of deleted rules from the | |
6702 | * classifier. Send notifications, buffered packets, etc. | |
39c94593 | 6703 | */ |
1f42be1c JR |
6704 | static enum ofperr |
6705 | do_bundle_commit(struct ofconn *ofconn, uint32_t id, uint16_t flags) | |
6706 | { | |
6707 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
1c38055d | 6708 | cls_version_t visible_version = ofproto->tables_version; |
1f42be1c JR |
6709 | struct ofp_bundle *bundle; |
6710 | struct ofp_bundle_entry *be; | |
777af88d | 6711 | enum ofperr error; |
1f42be1c JR |
6712 | |
6713 | bundle = ofconn_get_bundle(ofconn, id); | |
6714 | ||
6715 | if (!bundle) { | |
6716 | return OFPERR_OFPBFC_BAD_ID; | |
6717 | } | |
6718 | if (bundle->flags != flags) { | |
6719 | error = OFPERR_OFPBFC_BAD_FLAGS; | |
6720 | } else { | |
1c38055d JR |
6721 | bool prev_is_port_mod = false; |
6722 | ||
1f42be1c JR |
6723 | error = 0; |
6724 | ovs_mutex_lock(&ofproto_mutex); | |
39c94593 JR |
6725 | |
6726 | /* 1. Begin. */ | |
1f42be1c JR |
6727 | LIST_FOR_EACH (be, node, &bundle->msg_list) { |
6728 | if (be->type == OFPTYPE_PORT_MOD) { | |
1c38055d JR |
6729 | /* Our port mods are not atomic. */ |
6730 | if (flags & OFPBF_ATOMIC) { | |
6731 | error = OFPERR_OFPBFC_MSG_FAILED; | |
6732 | } else { | |
6733 | prev_is_port_mod = true; | |
6734 | error = port_mod_start(ofconn, &be->pm, &be->port); | |
6735 | } | |
1f42be1c | 6736 | } else if (be->type == OFPTYPE_FLOW_MOD) { |
1c38055d JR |
6737 | /* Flow mods between port mods are applied as a single |
6738 | * version, but the versions are published only after | |
6739 | * we know the commit is successful. */ | |
6740 | if (prev_is_port_mod) { | |
6741 | ++ofproto->tables_version; | |
6742 | } | |
6743 | prev_is_port_mod = false; | |
4fcb2083 | 6744 | error = do_bundle_flow_mod_start(ofproto, &be->fm, be); |
1f42be1c JR |
6745 | } else { |
6746 | OVS_NOT_REACHED(); | |
6747 | } | |
6748 | if (error) { | |
6749 | break; | |
1c38055d JR |
6750 | } else { |
6751 | /* Store the version in which the changes should take | |
6752 | * effect. */ | |
6753 | be->version = ofproto->tables_version + 1; | |
1f42be1c JR |
6754 | } |
6755 | } | |
1c38055d | 6756 | |
1f42be1c JR |
6757 | if (error) { |
6758 | /* Send error referring to the original message. */ | |
6759 | if (error) { | |
6760 | ofconn_send_error(ofconn, be->ofp_msg, error); | |
6761 | error = OFPERR_OFPBFC_MSG_FAILED; | |
6762 | } | |
6763 | ||
39c94593 | 6764 | /* 2. Revert. Undo all the changes made above. */ |
1f42be1c JR |
6765 | LIST_FOR_EACH_REVERSE_CONTINUE(be, node, &bundle->msg_list) { |
6766 | if (be->type == OFPTYPE_FLOW_MOD) { | |
6767 | do_bundle_flow_mod_revert(ofproto, &be->fm, be); | |
6768 | } | |
1c38055d | 6769 | /* Nothing needs to be reverted for a port mod. */ |
1f42be1c JR |
6770 | } |
6771 | } else { | |
39c94593 | 6772 | /* 4. Finish. */ |
1f42be1c | 6773 | LIST_FOR_EACH (be, node, &bundle->msg_list) { |
1c38055d JR |
6774 | /* Bump the lookup version to the one of the current message. |
6775 | * This makes all the changes in the bundle at this version | |
6776 | * visible to lookups at once. */ | |
6777 | if (visible_version < be->version) { | |
6778 | visible_version = be->version; | |
6779 | ofproto->ofproto_class->set_tables_version( | |
6780 | ofproto, visible_version); | |
6781 | } | |
1f42be1c JR |
6782 | if (be->type == OFPTYPE_FLOW_MOD) { |
6783 | struct flow_mod_requester req = { ofconn, be->ofp_msg }; | |
6784 | ||
6785 | do_bundle_flow_mod_finish(ofproto, &be->fm, &req, be); | |
1c38055d JR |
6786 | } else if (be->type == OFPTYPE_PORT_MOD) { |
6787 | /* Perform the actual port mod. This is not atomic, i.e., | |
6788 | * the effects will be immediately seen by upcall | |
6789 | * processing regardless of the lookup version. It should | |
6790 | * be noted that port configuration changes can originate | |
6791 | * also from OVSDB changes asynchronously to all upcall | |
6792 | * processing. */ | |
6793 | port_mod_finish(ofconn, &be->pm, be->port); | |
1f42be1c JR |
6794 | } |
6795 | } | |
6796 | } | |
1c38055d JR |
6797 | |
6798 | /* Reset the tables_version. */ | |
6799 | ofproto->tables_version = visible_version; | |
6800 | ||
1f42be1c JR |
6801 | ofmonitor_flush(ofproto->connmgr); |
6802 | ovs_mutex_unlock(&ofproto_mutex); | |
6803 | ||
6804 | run_rule_executes(ofproto); | |
6805 | } | |
6806 | ||
6807 | /* The bundle is discarded regardless the outcome. */ | |
6808 | ofp_bundle_remove__(ofconn, bundle, !error); | |
6809 | return error; | |
6810 | } | |
6811 | ||
6812 | static enum ofperr | |
6813 | handle_bundle_control(struct ofconn *ofconn, const struct ofp_header *oh) | |
6814 | { | |
777af88d | 6815 | struct ofputil_bundle_ctrl_msg bctrl; |
777af88d | 6816 | struct ofputil_bundle_ctrl_msg reply; |
1f42be1c JR |
6817 | struct ofpbuf *buf; |
6818 | enum ofperr error; | |
777af88d | 6819 | |
ba9d374a JR |
6820 | error = reject_slave_controller(ofconn); |
6821 | if (error) { | |
6822 | return error; | |
6823 | } | |
6824 | ||
777af88d AC |
6825 | error = ofputil_decode_bundle_ctrl(oh, &bctrl); |
6826 | if (error) { | |
6827 | return error; | |
6828 | } | |
6829 | reply.flags = 0; | |
6830 | reply.bundle_id = bctrl.bundle_id; | |
6831 | ||
6832 | switch (bctrl.type) { | |
6833 | case OFPBCT_OPEN_REQUEST: | |
6834 | error = ofp_bundle_open(ofconn, bctrl.bundle_id, bctrl.flags); | |
6835 | reply.type = OFPBCT_OPEN_REPLY; | |
6836 | break; | |
6837 | case OFPBCT_CLOSE_REQUEST: | |
6838 | error = ofp_bundle_close(ofconn, bctrl.bundle_id, bctrl.flags); | |
6839 | reply.type = OFPBCT_CLOSE_REPLY;; | |
6840 | break; | |
6841 | case OFPBCT_COMMIT_REQUEST: | |
1f42be1c | 6842 | error = do_bundle_commit(ofconn, bctrl.bundle_id, bctrl.flags); |
777af88d AC |
6843 | reply.type = OFPBCT_COMMIT_REPLY; |
6844 | break; | |
6845 | case OFPBCT_DISCARD_REQUEST: | |
6846 | error = ofp_bundle_discard(ofconn, bctrl.bundle_id); | |
6847 | reply.type = OFPBCT_DISCARD_REPLY; | |
6848 | break; | |
6849 | ||
6850 | case OFPBCT_OPEN_REPLY: | |
6851 | case OFPBCT_CLOSE_REPLY: | |
6852 | case OFPBCT_COMMIT_REPLY: | |
6853 | case OFPBCT_DISCARD_REPLY: | |
6854 | return OFPERR_OFPBFC_BAD_TYPE; | |
6855 | break; | |
6856 | } | |
6857 | ||
6858 | if (!error) { | |
6859 | buf = ofputil_encode_bundle_ctrl_reply(oh, &reply); | |
6860 | ofconn_send_reply(ofconn, buf); | |
6861 | } | |
6862 | return error; | |
6863 | } | |
6864 | ||
777af88d AC |
6865 | static enum ofperr |
6866 | handle_bundle_add(struct ofconn *ofconn, const struct ofp_header *oh) | |
6867 | { | |
7ac27a04 | 6868 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
777af88d AC |
6869 | enum ofperr error; |
6870 | struct ofputil_bundle_add_msg badd; | |
7ac27a04 JR |
6871 | struct ofp_bundle_entry *bmsg; |
6872 | enum ofptype type; | |
777af88d | 6873 | |
ba9d374a JR |
6874 | error = reject_slave_controller(ofconn); |
6875 | if (error) { | |
6876 | return error; | |
6877 | } | |
6878 | ||
7ac27a04 | 6879 | error = ofputil_decode_bundle_add(oh, &badd, &type); |
777af88d AC |
6880 | if (error) { |
6881 | return error; | |
6882 | } | |
6883 | ||
1f42be1c | 6884 | bmsg = ofp_bundle_entry_alloc(type, badd.msg); |
7ac27a04 JR |
6885 | |
6886 | if (type == OFPTYPE_PORT_MOD) { | |
6887 | error = ofputil_decode_port_mod(badd.msg, &bmsg->pm, false); | |
6888 | } else if (type == OFPTYPE_FLOW_MOD) { | |
6889 | struct ofpbuf ofpacts; | |
6890 | uint64_t ofpacts_stub[1024 / 8]; | |
6891 | ||
6892 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); | |
6893 | error = ofputil_decode_flow_mod(&bmsg->fm, badd.msg, | |
6894 | ofconn_get_protocol(ofconn), | |
6895 | &ofpacts, | |
6896 | u16_to_ofp(ofproto->max_ports), | |
6897 | ofproto->n_tables); | |
6898 | /* Move actions to heap. */ | |
6899 | bmsg->fm.ofpacts = ofpbuf_steal_data(&ofpacts); | |
6900 | ||
6901 | if (!error && bmsg->fm.ofpacts_len) { | |
6902 | error = ofproto_check_ofpacts(ofproto, bmsg->fm.ofpacts, | |
6903 | bmsg->fm.ofpacts_len); | |
6904 | } | |
6905 | } else { | |
6906 | OVS_NOT_REACHED(); | |
6907 | } | |
6908 | ||
6909 | if (!error) { | |
6910 | error = ofp_bundle_add_message(ofconn, badd.bundle_id, badd.flags, | |
6911 | bmsg); | |
6912 | } | |
6913 | ||
6914 | if (error) { | |
6915 | ofp_bundle_entry_free(bmsg); | |
6916 | } | |
6917 | ||
6918 | return error; | |
777af88d AC |
6919 | } |
6920 | ||
6159c531 JG |
6921 | static enum ofperr |
6922 | handle_geneve_table_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
6923 | { | |
6924 | struct ofputil_geneve_table_mod gtm; | |
6925 | enum ofperr error; | |
6926 | ||
6927 | error = reject_slave_controller(ofconn); | |
6928 | if (error) { | |
6929 | return error; | |
6930 | } | |
6931 | ||
6932 | error = ofputil_decode_geneve_table_mod(oh, >m); | |
6933 | if (error) { | |
6934 | return error; | |
6935 | } | |
6936 | ||
9558d2a5 JG |
6937 | error = tun_metadata_table_mod(>m); |
6938 | ||
6159c531 | 6939 | ofputil_uninit_geneve_table(>m.mappings); |
9558d2a5 | 6940 | return error; |
6159c531 JG |
6941 | } |
6942 | ||
6943 | static enum ofperr | |
9558d2a5 | 6944 | handle_geneve_table_request(struct ofconn *ofconn, const struct ofp_header *oh) |
6159c531 | 6945 | { |
9558d2a5 JG |
6946 | struct ofputil_geneve_table_reply gtr; |
6947 | struct ofpbuf *b; | |
6948 | ||
6949 | tun_metadata_table_request(>r); | |
6950 | b = ofputil_encode_geneve_table_reply(oh, >r); | |
6951 | ofputil_uninit_geneve_table(>r.mappings); | |
6952 | ||
6953 | ofconn_send_reply(ofconn, b); | |
6954 | return 0; | |
6159c531 JG |
6955 | } |
6956 | ||
90bf1e07 | 6957 | static enum ofperr |
d1e2cf21 | 6958 | handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg) |
15aaf599 | 6959 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 6960 | { |
6fd6ed71 | 6961 | const struct ofp_header *oh = msg->data; |
982697a4 | 6962 | enum ofptype type; |
90bf1e07 | 6963 | enum ofperr error; |
064af421 | 6964 | |
982697a4 | 6965 | error = ofptype_decode(&type, oh); |
d1e2cf21 BP |
6966 | if (error) { |
6967 | return error; | |
6968 | } | |
ff3c2c63 YT |
6969 | if (oh->version >= OFP13_VERSION && ofpmsg_is_stat_request(oh) |
6970 | && ofpmp_more(oh)) { | |
6971 | /* We have no buffer implementation for multipart requests. | |
6972 | * Report overflow for requests which consists of multiple | |
6973 | * messages. */ | |
6974 | return OFPERR_OFPBRC_MULTIPART_BUFFER_OVERFLOW; | |
6975 | } | |
064af421 | 6976 | |
982697a4 | 6977 | switch (type) { |
d1e2cf21 | 6978 | /* OpenFlow requests. */ |
982697a4 | 6979 | case OFPTYPE_ECHO_REQUEST: |
d1e2cf21 | 6980 | return handle_echo_request(ofconn, oh); |
064af421 | 6981 | |
982697a4 | 6982 | case OFPTYPE_FEATURES_REQUEST: |
d1e2cf21 | 6983 | return handle_features_request(ofconn, oh); |
064af421 | 6984 | |
982697a4 | 6985 | case OFPTYPE_GET_CONFIG_REQUEST: |
d1e2cf21 | 6986 | return handle_get_config_request(ofconn, oh); |
064af421 | 6987 | |
982697a4 BP |
6988 | case OFPTYPE_SET_CONFIG: |
6989 | return handle_set_config(ofconn, oh); | |
064af421 | 6990 | |
982697a4 BP |
6991 | case OFPTYPE_PACKET_OUT: |
6992 | return handle_packet_out(ofconn, oh); | |
064af421 | 6993 | |
982697a4 | 6994 | case OFPTYPE_PORT_MOD: |
d1e2cf21 | 6995 | return handle_port_mod(ofconn, oh); |
064af421 | 6996 | |
982697a4 | 6997 | case OFPTYPE_FLOW_MOD: |
2e4f5fcf | 6998 | return handle_flow_mod(ofconn, oh); |
064af421 | 6999 | |
7395c052 NZ |
7000 | case OFPTYPE_GROUP_MOD: |
7001 | return handle_group_mod(ofconn, oh); | |
7002 | ||
918f2b82 AZ |
7003 | case OFPTYPE_TABLE_MOD: |
7004 | return handle_table_mod(ofconn, oh); | |
7005 | ||
9cae45dc JR |
7006 | case OFPTYPE_METER_MOD: |
7007 | return handle_meter_mod(ofconn, oh); | |
7008 | ||
982697a4 | 7009 | case OFPTYPE_BARRIER_REQUEST: |
d1e2cf21 | 7010 | return handle_barrier_request(ofconn, oh); |
064af421 | 7011 | |
6ea4776b JR |
7012 | case OFPTYPE_ROLE_REQUEST: |
7013 | return handle_role_request(ofconn, oh); | |
7014 | ||
d1e2cf21 | 7015 | /* OpenFlow replies. */ |
982697a4 | 7016 | case OFPTYPE_ECHO_REPLY: |
d1e2cf21 | 7017 | return 0; |
246e61ea | 7018 | |
d1e2cf21 | 7019 | /* Nicira extension requests. */ |
982697a4 | 7020 | case OFPTYPE_FLOW_MOD_TABLE_ID: |
6c1491fb | 7021 | return handle_nxt_flow_mod_table_id(ofconn, oh); |
d1e2cf21 | 7022 | |
982697a4 | 7023 | case OFPTYPE_SET_FLOW_FORMAT: |
d1e2cf21 BP |
7024 | return handle_nxt_set_flow_format(ofconn, oh); |
7025 | ||
982697a4 | 7026 | case OFPTYPE_SET_PACKET_IN_FORMAT: |
54834960 EJ |
7027 | return handle_nxt_set_packet_in_format(ofconn, oh); |
7028 | ||
982697a4 | 7029 | case OFPTYPE_SET_CONTROLLER_ID: |
a7349929 BP |
7030 | return handle_nxt_set_controller_id(ofconn, oh); |
7031 | ||
982697a4 | 7032 | case OFPTYPE_FLOW_AGE: |
f27f2134 BP |
7033 | /* Nothing to do. */ |
7034 | return 0; | |
7035 | ||
982697a4 | 7036 | case OFPTYPE_FLOW_MONITOR_CANCEL: |
2b07c8b1 BP |
7037 | return handle_flow_monitor_cancel(ofconn, oh); |
7038 | ||
982697a4 | 7039 | case OFPTYPE_SET_ASYNC_CONFIG: |
80d5aefd BP |
7040 | return handle_nxt_set_async_config(ofconn, oh); |
7041 | ||
c423b3b3 AC |
7042 | case OFPTYPE_GET_ASYNC_REQUEST: |
7043 | return handle_nxt_get_async_request(ofconn, oh); | |
7044 | ||
349adfb2 | 7045 | /* Statistics requests. */ |
982697a4 BP |
7046 | case OFPTYPE_DESC_STATS_REQUEST: |
7047 | return handle_desc_stats_request(ofconn, oh); | |
7048 | ||
7049 | case OFPTYPE_FLOW_STATS_REQUEST: | |
7050 | return handle_flow_stats_request(ofconn, oh); | |
7051 | ||
7052 | case OFPTYPE_AGGREGATE_STATS_REQUEST: | |
7053 | return handle_aggregate_stats_request(ofconn, oh); | |
7054 | ||
7055 | case OFPTYPE_TABLE_STATS_REQUEST: | |
7056 | return handle_table_stats_request(ofconn, oh); | |
7057 | ||
3c4e10fb BP |
7058 | case OFPTYPE_TABLE_FEATURES_STATS_REQUEST: |
7059 | return handle_table_features_request(ofconn, oh); | |
7060 | ||
982697a4 BP |
7061 | case OFPTYPE_PORT_STATS_REQUEST: |
7062 | return handle_port_stats_request(ofconn, oh); | |
7063 | ||
7064 | case OFPTYPE_QUEUE_STATS_REQUEST: | |
7065 | return handle_queue_stats_request(ofconn, oh); | |
7066 | ||
7067 | case OFPTYPE_PORT_DESC_STATS_REQUEST: | |
7068 | return handle_port_desc_stats_request(ofconn, oh); | |
7069 | ||
7070 | case OFPTYPE_FLOW_MONITOR_STATS_REQUEST: | |
7071 | return handle_flow_monitor_request(ofconn, oh); | |
7072 | ||
261bd854 BP |
7073 | case OFPTYPE_METER_STATS_REQUEST: |
7074 | case OFPTYPE_METER_CONFIG_STATS_REQUEST: | |
9cae45dc JR |
7075 | return handle_meter_request(ofconn, oh, type); |
7076 | ||
261bd854 | 7077 | case OFPTYPE_METER_FEATURES_STATS_REQUEST: |
9cae45dc JR |
7078 | return handle_meter_features_request(ofconn, oh); |
7079 | ||
261bd854 | 7080 | case OFPTYPE_GROUP_STATS_REQUEST: |
7395c052 NZ |
7081 | return handle_group_stats_request(ofconn, oh); |
7082 | ||
261bd854 | 7083 | case OFPTYPE_GROUP_DESC_STATS_REQUEST: |
7395c052 NZ |
7084 | return handle_group_desc_stats_request(ofconn, oh); |
7085 | ||
261bd854 | 7086 | case OFPTYPE_GROUP_FEATURES_STATS_REQUEST: |
7395c052 NZ |
7087 | return handle_group_features_stats_request(ofconn, oh); |
7088 | ||
7395c052 | 7089 | case OFPTYPE_QUEUE_GET_CONFIG_REQUEST: |
e8f9a7bb | 7090 | return handle_queue_get_config_request(ofconn, oh); |
2e1ae200 | 7091 | |
777af88d AC |
7092 | case OFPTYPE_BUNDLE_CONTROL: |
7093 | return handle_bundle_control(ofconn, oh); | |
7094 | ||
7095 | case OFPTYPE_BUNDLE_ADD_MESSAGE: | |
7096 | return handle_bundle_add(ofconn, oh); | |
7097 | ||
6159c531 JG |
7098 | case OFPTYPE_NXT_GENEVE_TABLE_MOD: |
7099 | return handle_geneve_table_mod(ofconn, oh); | |
7100 | ||
7101 | case OFPTYPE_NXT_GENEVE_TABLE_REQUEST: | |
7102 | return handle_geneve_table_request(ofconn, oh); | |
7103 | ||
982697a4 BP |
7104 | case OFPTYPE_HELLO: |
7105 | case OFPTYPE_ERROR: | |
7106 | case OFPTYPE_FEATURES_REPLY: | |
7107 | case OFPTYPE_GET_CONFIG_REPLY: | |
7108 | case OFPTYPE_PACKET_IN: | |
7109 | case OFPTYPE_FLOW_REMOVED: | |
7110 | case OFPTYPE_PORT_STATUS: | |
7111 | case OFPTYPE_BARRIER_REPLY: | |
c545d38d | 7112 | case OFPTYPE_QUEUE_GET_CONFIG_REPLY: |
982697a4 BP |
7113 | case OFPTYPE_DESC_STATS_REPLY: |
7114 | case OFPTYPE_FLOW_STATS_REPLY: | |
7115 | case OFPTYPE_QUEUE_STATS_REPLY: | |
7116 | case OFPTYPE_PORT_STATS_REPLY: | |
7117 | case OFPTYPE_TABLE_STATS_REPLY: | |
7118 | case OFPTYPE_AGGREGATE_STATS_REPLY: | |
7119 | case OFPTYPE_PORT_DESC_STATS_REPLY: | |
7120 | case OFPTYPE_ROLE_REPLY: | |
7121 | case OFPTYPE_FLOW_MONITOR_PAUSED: | |
7122 | case OFPTYPE_FLOW_MONITOR_RESUMED: | |
7123 | case OFPTYPE_FLOW_MONITOR_STATS_REPLY: | |
2e1ae200 | 7124 | case OFPTYPE_GET_ASYNC_REPLY: |
261bd854 BP |
7125 | case OFPTYPE_GROUP_STATS_REPLY: |
7126 | case OFPTYPE_GROUP_DESC_STATS_REPLY: | |
7127 | case OFPTYPE_GROUP_FEATURES_STATS_REPLY: | |
7128 | case OFPTYPE_METER_STATS_REPLY: | |
7129 | case OFPTYPE_METER_CONFIG_STATS_REPLY: | |
7130 | case OFPTYPE_METER_FEATURES_STATS_REPLY: | |
7131 | case OFPTYPE_TABLE_FEATURES_STATS_REPLY: | |
252f3411 | 7132 | case OFPTYPE_ROLE_STATUS: |
6159c531 | 7133 | case OFPTYPE_NXT_GENEVE_TABLE_REPLY: |
064af421 | 7134 | default: |
76ec08e0 YT |
7135 | if (ofpmsg_is_stat_request(oh)) { |
7136 | return OFPERR_OFPBRC_BAD_STAT; | |
7137 | } else { | |
7138 | return OFPERR_OFPBRC_BAD_TYPE; | |
7139 | } | |
064af421 | 7140 | } |
d1e2cf21 | 7141 | } |
064af421 | 7142 | |
b20f4073 | 7143 | static void |
e03248b7 | 7144 | handle_openflow(struct ofconn *ofconn, const struct ofpbuf *ofp_msg) |
15aaf599 | 7145 | OVS_EXCLUDED(ofproto_mutex) |
d1e2cf21 | 7146 | { |
d51c8b71 JR |
7147 | enum ofperr error = handle_openflow__(ofconn, ofp_msg); |
7148 | ||
b20f4073 | 7149 | if (error) { |
6fd6ed71 | 7150 | ofconn_send_error(ofconn, ofp_msg->data, error); |
064af421 | 7151 | } |
d1e2cf21 | 7152 | COVERAGE_INC(ofproto_recv_openflow); |
7ee20df1 BP |
7153 | } |
7154 | \f | |
7155 | /* Asynchronous operations. */ | |
7156 | ||
c84d8691 JR |
7157 | static void |
7158 | send_buffered_packet(const struct flow_mod_requester *req, uint32_t buffer_id, | |
834fe5cb | 7159 | struct rule *rule) |
15aaf599 | 7160 | OVS_REQUIRES(ofproto_mutex) |
7ee20df1 | 7161 | { |
c84d8691 JR |
7162 | if (req && req->ofconn && buffer_id != UINT32_MAX) { |
7163 | struct ofproto *ofproto = ofconn_get_ofproto(req->ofconn); | |
cf62fa4c | 7164 | struct dp_packet *packet; |
834fe5cb | 7165 | ofp_port_t in_port; |
c84d8691 | 7166 | enum ofperr error; |
b277c7cc | 7167 | |
c84d8691 JR |
7168 | error = ofconn_pktbuf_retrieve(req->ofconn, buffer_id, &packet, |
7169 | &in_port); | |
834fe5cb BP |
7170 | if (packet) { |
7171 | struct rule_execute *re; | |
b277c7cc | 7172 | |
834fe5cb | 7173 | ofproto_rule_ref(rule); |
b277c7cc | 7174 | |
834fe5cb BP |
7175 | re = xmalloc(sizeof *re); |
7176 | re->rule = rule; | |
7177 | re->in_port = in_port; | |
7178 | re->packet = packet; | |
b277c7cc | 7179 | |
834fe5cb BP |
7180 | if (!guarded_list_push_back(&ofproto->rule_executes, |
7181 | &re->list_node, 1024)) { | |
a2143702 | 7182 | ofproto_rule_unref(rule); |
cf62fa4c | 7183 | dp_packet_delete(re->packet); |
834fe5cb | 7184 | free(re); |
e615b0a3 | 7185 | } |
c84d8691 JR |
7186 | } else { |
7187 | ofconn_send_error(req->ofconn, req->request, error); | |
af822017 | 7188 | } |
7ee20df1 | 7189 | } |
7ee20df1 | 7190 | } |
064af421 | 7191 | \f |
064af421 | 7192 | static uint64_t |
fa60c019 | 7193 | pick_datapath_id(const struct ofproto *ofproto) |
064af421 | 7194 | { |
fa60c019 | 7195 | const struct ofport *port; |
064af421 | 7196 | |
abe529af | 7197 | port = ofproto_get_port(ofproto, OFPP_LOCAL); |
fa60c019 BP |
7198 | if (port) { |
7199 | uint8_t ea[ETH_ADDR_LEN]; | |
7200 | int error; | |
7201 | ||
7202 | error = netdev_get_etheraddr(port->netdev, ea); | |
064af421 BP |
7203 | if (!error) { |
7204 | return eth_addr_to_uint64(ea); | |
7205 | } | |
fbfa2911 BP |
7206 | VLOG_WARN("%s: could not get MAC address for %s (%s)", |
7207 | ofproto->name, netdev_get_name(port->netdev), | |
10a89ef0 | 7208 | ovs_strerror(error)); |
064af421 | 7209 | } |
fa60c019 | 7210 | return ofproto->fallback_dpid; |
064af421 BP |
7211 | } |
7212 | ||
7213 | static uint64_t | |
7214 | pick_fallback_dpid(void) | |
7215 | { | |
7216 | uint8_t ea[ETH_ADDR_LEN]; | |
70150daf | 7217 | eth_addr_nicira_random(ea); |
064af421 BP |
7218 | return eth_addr_to_uint64(ea); |
7219 | } | |
7220 | \f | |
254750ce BP |
7221 | /* Table overflow policy. */ |
7222 | ||
ad3efdcb EJ |
7223 | /* Chooses and updates 'rulep' with a rule to evict from 'table'. Sets 'rulep' |
7224 | * to NULL if the table is not configured to evict rules or if the table | |
7225 | * contains no evictable rules. (Rules with a readlock on their evict rwlock, | |
7226 | * or with no timeouts are not evictable.) */ | |
7227 | static bool | |
7228 | choose_rule_to_evict(struct oftable *table, struct rule **rulep) | |
15aaf599 | 7229 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
7230 | { |
7231 | struct eviction_group *evg; | |
7232 | ||
ad3efdcb | 7233 | *rulep = NULL; |
254750ce | 7234 | if (!table->eviction_fields) { |
ad3efdcb | 7235 | return false; |
254750ce BP |
7236 | } |
7237 | ||
7238 | /* In the common case, the outer and inner loops here will each be entered | |
7239 | * exactly once: | |
7240 | * | |
7241 | * - The inner loop normally "return"s in its first iteration. If the | |
7242 | * eviction group has any evictable rules, then it always returns in | |
7243 | * some iteration. | |
7244 | * | |
7245 | * - The outer loop only iterates more than once if the largest eviction | |
7246 | * group has no evictable rules. | |
7247 | * | |
7248 | * - The outer loop can exit only if table's 'max_flows' is all filled up | |
afe2143d | 7249 | * by unevictable rules. */ |
254750ce BP |
7250 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { |
7251 | struct rule *rule; | |
7252 | ||
7253 | HEAP_FOR_EACH (rule, evg_node, &evg->rules) { | |
15aaf599 BP |
7254 | *rulep = rule; |
7255 | return true; | |
254750ce BP |
7256 | } |
7257 | } | |
7258 | ||
ad3efdcb | 7259 | return false; |
254750ce | 7260 | } |
254750ce BP |
7261 | \f |
7262 | /* Eviction groups. */ | |
7263 | ||
7264 | /* Returns the priority to use for an eviction_group that contains 'n_rules' | |
7265 | * rules. The priority contains low-order random bits to ensure that eviction | |
7266 | * groups with the same number of rules are prioritized randomly. */ | |
7267 | static uint32_t | |
7268 | eviction_group_priority(size_t n_rules) | |
7269 | { | |
7270 | uint16_t size = MIN(UINT16_MAX, n_rules); | |
7271 | return (size << 16) | random_uint16(); | |
7272 | } | |
7273 | ||
7274 | /* Updates 'evg', an eviction_group within 'table', following a change that | |
7275 | * adds or removes rules in 'evg'. */ | |
7276 | static void | |
7277 | eviction_group_resized(struct oftable *table, struct eviction_group *evg) | |
15aaf599 | 7278 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
7279 | { |
7280 | heap_change(&table->eviction_groups_by_size, &evg->size_node, | |
7281 | eviction_group_priority(heap_count(&evg->rules))); | |
7282 | } | |
7283 | ||
7284 | /* Destroys 'evg', an eviction_group within 'table': | |
7285 | * | |
7286 | * - Removes all the rules, if any, from 'evg'. (It doesn't destroy the | |
7287 | * rules themselves, just removes them from the eviction group.) | |
7288 | * | |
7289 | * - Removes 'evg' from 'table'. | |
7290 | * | |
7291 | * - Frees 'evg'. */ | |
7292 | static void | |
7293 | eviction_group_destroy(struct oftable *table, struct eviction_group *evg) | |
15aaf599 | 7294 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
7295 | { |
7296 | while (!heap_is_empty(&evg->rules)) { | |
7297 | struct rule *rule; | |
7298 | ||
7299 | rule = CONTAINER_OF(heap_pop(&evg->rules), struct rule, evg_node); | |
7300 | rule->eviction_group = NULL; | |
7301 | } | |
7302 | hmap_remove(&table->eviction_groups_by_id, &evg->id_node); | |
7303 | heap_remove(&table->eviction_groups_by_size, &evg->size_node); | |
7304 | heap_destroy(&evg->rules); | |
7305 | free(evg); | |
7306 | } | |
7307 | ||
7308 | /* Removes 'rule' from its eviction group, if any. */ | |
7309 | static void | |
7310 | eviction_group_remove_rule(struct rule *rule) | |
15aaf599 | 7311 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
7312 | { |
7313 | if (rule->eviction_group) { | |
7314 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
7315 | struct eviction_group *evg = rule->eviction_group; | |
7316 | ||
7317 | rule->eviction_group = NULL; | |
7318 | heap_remove(&evg->rules, &rule->evg_node); | |
7319 | if (heap_is_empty(&evg->rules)) { | |
7320 | eviction_group_destroy(table, evg); | |
7321 | } else { | |
7322 | eviction_group_resized(table, evg); | |
7323 | } | |
7324 | } | |
7325 | } | |
7326 | ||
7327 | /* Hashes the 'rule''s values for the eviction_fields of 'rule''s table, and | |
7328 | * returns the hash value. */ | |
7329 | static uint32_t | |
7330 | eviction_group_hash_rule(struct rule *rule) | |
15aaf599 | 7331 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
7332 | { |
7333 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
7334 | const struct mf_subfield *sf; | |
5cb7a798 | 7335 | struct flow flow; |
254750ce BP |
7336 | uint32_t hash; |
7337 | ||
7338 | hash = table->eviction_group_id_basis; | |
5cb7a798 | 7339 | miniflow_expand(&rule->cr.match.flow, &flow); |
254750ce BP |
7340 | for (sf = table->eviction_fields; |
7341 | sf < &table->eviction_fields[table->n_eviction_fields]; | |
7342 | sf++) | |
7343 | { | |
5cb7a798 | 7344 | if (mf_are_prereqs_ok(sf->field, &flow)) { |
254750ce BP |
7345 | union mf_value value; |
7346 | ||
5cb7a798 | 7347 | mf_get_value(sf->field, &flow, &value); |
254750ce BP |
7348 | if (sf->ofs) { |
7349 | bitwise_zero(&value, sf->field->n_bytes, 0, sf->ofs); | |
7350 | } | |
7351 | if (sf->ofs + sf->n_bits < sf->field->n_bytes * 8) { | |
7352 | unsigned int start = sf->ofs + sf->n_bits; | |
7353 | bitwise_zero(&value, sf->field->n_bytes, start, | |
7354 | sf->field->n_bytes * 8 - start); | |
7355 | } | |
7356 | hash = hash_bytes(&value, sf->field->n_bytes, hash); | |
7357 | } else { | |
7358 | hash = hash_int(hash, 0); | |
7359 | } | |
7360 | } | |
7361 | ||
7362 | return hash; | |
7363 | } | |
7364 | ||
7365 | /* Returns an eviction group within 'table' with the given 'id', creating one | |
7366 | * if necessary. */ | |
7367 | static struct eviction_group * | |
7368 | eviction_group_find(struct oftable *table, uint32_t id) | |
15aaf599 | 7369 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
7370 | { |
7371 | struct eviction_group *evg; | |
7372 | ||
7373 | HMAP_FOR_EACH_WITH_HASH (evg, id_node, id, &table->eviction_groups_by_id) { | |
7374 | return evg; | |
7375 | } | |
7376 | ||
7377 | evg = xmalloc(sizeof *evg); | |
7378 | hmap_insert(&table->eviction_groups_by_id, &evg->id_node, id); | |
7379 | heap_insert(&table->eviction_groups_by_size, &evg->size_node, | |
7380 | eviction_group_priority(0)); | |
7381 | heap_init(&evg->rules); | |
7382 | ||
7383 | return evg; | |
7384 | } | |
7385 | ||
7386 | /* Returns an eviction priority for 'rule'. The return value should be | |
f70b94de BP |
7387 | * interpreted so that higher priorities make a rule a more attractive |
7388 | * candidate for eviction. */ | |
7389 | static uint64_t | |
dc437090 | 7390 | rule_eviction_priority(struct ofproto *ofproto, struct rule *rule) |
15aaf599 | 7391 | OVS_REQUIRES(ofproto_mutex) |
254750ce | 7392 | { |
f70b94de BP |
7393 | /* Calculate absolute time when this flow will expire. If it will never |
7394 | * expire, then return 0 to make it unevictable. */ | |
dc437090 | 7395 | long long int expiration = LLONG_MAX; |
dc437090 | 7396 | if (rule->hard_timeout) { |
f70b94de BP |
7397 | /* 'modified' needs protection even when we hold 'ofproto_mutex'. */ |
7398 | ovs_mutex_lock(&rule->mutex); | |
7399 | long long int modified = rule->modified; | |
7400 | ovs_mutex_unlock(&rule->mutex); | |
7401 | ||
dc437090 JR |
7402 | expiration = modified + rule->hard_timeout * 1000; |
7403 | } | |
7404 | if (rule->idle_timeout) { | |
7405 | uint64_t packets, bytes; | |
7406 | long long int used; | |
7407 | long long int idle_expiration; | |
7408 | ||
7409 | ofproto->ofproto_class->rule_get_stats(rule, &packets, &bytes, &used); | |
7410 | idle_expiration = used + rule->idle_timeout * 1000; | |
7411 | expiration = MIN(expiration, idle_expiration); | |
7412 | } | |
254750ce BP |
7413 | if (expiration == LLONG_MAX) { |
7414 | return 0; | |
7415 | } | |
7416 | ||
7417 | /* Calculate the time of expiration as a number of (approximate) seconds | |
7418 | * after program startup. | |
7419 | * | |
7420 | * This should work OK for program runs that last UINT32_MAX seconds or | |
7421 | * less. Therefore, please restart OVS at least once every 136 years. */ | |
f70b94de | 7422 | uint32_t expiration_ofs = (expiration >> 10) - (time_boot_msec() >> 10); |
254750ce | 7423 | |
f70b94de BP |
7424 | /* Combine expiration time with OpenFlow "importance" to form a single |
7425 | * priority value. We want flows with relatively low "importance" to be | |
7426 | * evicted before even considering expiration time, so put "importance" in | |
7427 | * the most significant bits and expiration time in the least significant | |
7428 | * bits. | |
7429 | * | |
7430 | * Small 'priority' should be evicted before those with large 'priority'. | |
7431 | * The caller expects the opposite convention (a large return value being | |
7432 | * more attractive for eviction) so we invert it before returning. */ | |
7433 | uint64_t priority = ((uint64_t) rule->importance << 32) + expiration_ofs; | |
7434 | return UINT64_MAX - priority; | |
254750ce BP |
7435 | } |
7436 | ||
7437 | /* Adds 'rule' to an appropriate eviction group for its oftable's | |
7438 | * configuration. Does nothing if 'rule''s oftable doesn't have eviction | |
7439 | * enabled, or if 'rule' is a permanent rule (one that will never expire on its | |
7440 | * own). | |
7441 | * | |
7442 | * The caller must ensure that 'rule' is not already in an eviction group. */ | |
7443 | static void | |
7444 | eviction_group_add_rule(struct rule *rule) | |
15aaf599 | 7445 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
7446 | { |
7447 | struct ofproto *ofproto = rule->ofproto; | |
7448 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
a3779dbc | 7449 | bool has_timeout; |
254750ce | 7450 | |
dc437090 JR |
7451 | /* Timeouts may be modified only when holding 'ofproto_mutex'. We have it |
7452 | * so no additional protection is needed. */ | |
a3779dbc | 7453 | has_timeout = rule->hard_timeout || rule->idle_timeout; |
a3779dbc EJ |
7454 | |
7455 | if (table->eviction_fields && has_timeout) { | |
254750ce BP |
7456 | struct eviction_group *evg; |
7457 | ||
7458 | evg = eviction_group_find(table, eviction_group_hash_rule(rule)); | |
7459 | ||
7460 | rule->eviction_group = evg; | |
7461 | heap_insert(&evg->rules, &rule->evg_node, | |
dc437090 | 7462 | rule_eviction_priority(ofproto, rule)); |
254750ce BP |
7463 | eviction_group_resized(table, evg); |
7464 | } | |
7465 | } | |
7466 | \f | |
d0918789 BP |
7467 | /* oftables. */ |
7468 | ||
7469 | /* Initializes 'table'. */ | |
7470 | static void | |
7471 | oftable_init(struct oftable *table) | |
7472 | { | |
5c67e4af | 7473 | memset(table, 0, sizeof *table); |
d70e8c28 | 7474 | classifier_init(&table->cls, flow_segment_u64s); |
ec1c5c7e | 7475 | table->max_flows = UINT_MAX; |
d79e3d70 | 7476 | table->n_flows = 0; |
3c1bb396 | 7477 | atomic_init(&table->miss_config, OFPUTIL_TABLE_MISS_DEFAULT); |
f017d986 | 7478 | |
f017d986 JR |
7479 | classifier_set_prefix_fields(&table->cls, default_prefix_fields, |
7480 | ARRAY_SIZE(default_prefix_fields)); | |
d611866c SH |
7481 | |
7482 | atomic_init(&table->n_matched, 0); | |
7483 | atomic_init(&table->n_missed, 0); | |
d0918789 BP |
7484 | } |
7485 | ||
254750ce | 7486 | /* Destroys 'table', including its classifier and eviction groups. |
d0918789 BP |
7487 | * |
7488 | * The caller is responsible for freeing 'table' itself. */ | |
7489 | static void | |
7490 | oftable_destroy(struct oftable *table) | |
7491 | { | |
cb22974d | 7492 | ovs_assert(classifier_is_empty(&table->cls)); |
7394b8fb | 7493 | ovs_mutex_lock(&ofproto_mutex); |
254750ce | 7494 | oftable_disable_eviction(table); |
7394b8fb | 7495 | ovs_mutex_unlock(&ofproto_mutex); |
d0918789 | 7496 | classifier_destroy(&table->cls); |
254750ce BP |
7497 | free(table->name); |
7498 | } | |
7499 | ||
7500 | /* Changes the name of 'table' to 'name'. If 'name' is NULL or the empty | |
7501 | * string, then 'table' will use its default name. | |
7502 | * | |
7503 | * This only affects the name exposed for a table exposed through the OpenFlow | |
7504 | * OFPST_TABLE (as printed by "ovs-ofctl dump-tables"). */ | |
7505 | static void | |
7506 | oftable_set_name(struct oftable *table, const char *name) | |
7507 | { | |
7508 | if (name && name[0]) { | |
7509 | int len = strnlen(name, OFP_MAX_TABLE_NAME_LEN); | |
7510 | if (!table->name || strncmp(name, table->name, len)) { | |
7511 | free(table->name); | |
7512 | table->name = xmemdup0(name, len); | |
7513 | } | |
7514 | } else { | |
7515 | free(table->name); | |
7516 | table->name = NULL; | |
7517 | } | |
7518 | } | |
7519 | ||
7520 | /* oftables support a choice of two policies when adding a rule would cause the | |
7521 | * number of flows in the table to exceed the configured maximum number: either | |
7522 | * they can refuse to add the new flow or they can evict some existing flow. | |
7523 | * This function configures the former policy on 'table'. */ | |
7524 | static void | |
7525 | oftable_disable_eviction(struct oftable *table) | |
15aaf599 | 7526 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
7527 | { |
7528 | if (table->eviction_fields) { | |
7529 | struct eviction_group *evg, *next; | |
7530 | ||
7531 | HMAP_FOR_EACH_SAFE (evg, next, id_node, | |
7532 | &table->eviction_groups_by_id) { | |
7533 | eviction_group_destroy(table, evg); | |
7534 | } | |
7535 | hmap_destroy(&table->eviction_groups_by_id); | |
7536 | heap_destroy(&table->eviction_groups_by_size); | |
7537 | ||
7538 | free(table->eviction_fields); | |
7539 | table->eviction_fields = NULL; | |
7540 | table->n_eviction_fields = 0; | |
7541 | } | |
7542 | } | |
7543 | ||
7544 | /* oftables support a choice of two policies when adding a rule would cause the | |
7545 | * number of flows in the table to exceed the configured maximum number: either | |
7546 | * they can refuse to add the new flow or they can evict some existing flow. | |
7547 | * This function configures the latter policy on 'table', with fairness based | |
7548 | * on the values of the 'n_fields' fields specified in 'fields'. (Specifying | |
7549 | * 'n_fields' as 0 disables fairness.) */ | |
7550 | static void | |
7551 | oftable_enable_eviction(struct oftable *table, | |
7552 | const struct mf_subfield *fields, size_t n_fields) | |
15aaf599 | 7553 | OVS_REQUIRES(ofproto_mutex) |
254750ce | 7554 | { |
254750ce BP |
7555 | struct rule *rule; |
7556 | ||
7557 | if (table->eviction_fields | |
7558 | && n_fields == table->n_eviction_fields | |
7559 | && (!n_fields | |
7560 | || !memcmp(fields, table->eviction_fields, | |
7561 | n_fields * sizeof *fields))) { | |
7562 | /* No change. */ | |
7563 | return; | |
7564 | } | |
7565 | ||
7566 | oftable_disable_eviction(table); | |
7567 | ||
7568 | table->n_eviction_fields = n_fields; | |
7569 | table->eviction_fields = xmemdup(fields, n_fields * sizeof *fields); | |
7570 | ||
7571 | table->eviction_group_id_basis = random_uint32(); | |
7572 | hmap_init(&table->eviction_groups_by_id); | |
7573 | heap_init(&table->eviction_groups_by_size); | |
7574 | ||
5f0476ce | 7575 | CLS_FOR_EACH (rule, cr, &table->cls) { |
254750ce BP |
7576 | eviction_group_add_rule(rule); |
7577 | } | |
d0918789 BP |
7578 | } |
7579 | ||
bc5e6a91 JR |
7580 | /* Inserts 'rule' from the ofproto data structures BEFORE caller has inserted |
7581 | * it to the classifier. */ | |
7582 | static void | |
7583 | ofproto_rule_insert__(struct ofproto *ofproto, struct rule *rule) | |
7584 | OVS_REQUIRES(ofproto_mutex) | |
7585 | { | |
7586 | const struct rule_actions *actions = rule_get_actions(rule); | |
7587 | ||
39c94593 JR |
7588 | ovs_assert(rule->removed); |
7589 | ||
bc5e6a91 JR |
7590 | if (rule->hard_timeout || rule->idle_timeout) { |
7591 | list_insert(&ofproto->expirable, &rule->expirable); | |
7592 | } | |
7593 | cookies_insert(ofproto, rule); | |
7594 | eviction_group_add_rule(rule); | |
7595 | if (actions->has_meter) { | |
7596 | meter_insert_rule(rule); | |
7597 | } | |
39c94593 | 7598 | rule->removed = false; |
bc5e6a91 JR |
7599 | } |
7600 | ||
6787a49f JR |
7601 | /* Removes 'rule' from the ofproto data structures. Caller may have deferred |
7602 | * the removal from the classifier. */ | |
d0918789 | 7603 | static void |
802f84ff | 7604 | ofproto_rule_remove__(struct ofproto *ofproto, struct rule *rule) |
15aaf599 | 7605 | OVS_REQUIRES(ofproto_mutex) |
d0918789 | 7606 | { |
39c94593 JR |
7607 | ovs_assert(!rule->removed); |
7608 | ||
98eaac36 | 7609 | cookies_remove(ofproto, rule); |
2c916028 | 7610 | |
254750ce | 7611 | eviction_group_remove_rule(rule); |
e503cc19 SH |
7612 | if (!list_is_empty(&rule->expirable)) { |
7613 | list_remove(&rule->expirable); | |
7614 | } | |
9cae45dc JR |
7615 | if (!list_is_empty(&rule->meter_list_node)) { |
7616 | list_remove(&rule->meter_list_node); | |
51b50dfd | 7617 | list_init(&rule->meter_list_node); |
9cae45dc | 7618 | } |
802f84ff | 7619 | |
39c94593 | 7620 | rule->removed = true; |
0b4f2078 | 7621 | } |
d0918789 | 7622 | \f |
abe529af | 7623 | /* unixctl commands. */ |
7aa697dd | 7624 | |
abe529af | 7625 | struct ofproto * |
2ac6bedd | 7626 | ofproto_lookup(const char *name) |
7aa697dd | 7627 | { |
2ac6bedd | 7628 | struct ofproto *ofproto; |
7aa697dd | 7629 | |
2ac6bedd BP |
7630 | HMAP_FOR_EACH_WITH_HASH (ofproto, hmap_node, hash_string(name, 0), |
7631 | &all_ofprotos) { | |
7632 | if (!strcmp(ofproto->name, name)) { | |
7633 | return ofproto; | |
7634 | } | |
7aa697dd | 7635 | } |
2ac6bedd | 7636 | return NULL; |
7aa697dd BP |
7637 | } |
7638 | ||
7639 | static void | |
0e15264f BP |
7640 | ofproto_unixctl_list(struct unixctl_conn *conn, int argc OVS_UNUSED, |
7641 | const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED) | |
7aa697dd | 7642 | { |
7aa697dd | 7643 | struct ofproto *ofproto; |
7aa697dd | 7644 | struct ds results; |
7aa697dd | 7645 | |
7aa697dd | 7646 | ds_init(&results); |
2ac6bedd BP |
7647 | HMAP_FOR_EACH (ofproto, hmap_node, &all_ofprotos) { |
7648 | ds_put_format(&results, "%s\n", ofproto->name); | |
7aa697dd | 7649 | } |
bde9f75d | 7650 | unixctl_command_reply(conn, ds_cstr(&results)); |
7aa697dd | 7651 | ds_destroy(&results); |
7aa697dd BP |
7652 | } |
7653 | ||
7654 | static void | |
7655 | ofproto_unixctl_init(void) | |
7656 | { | |
7657 | static bool registered; | |
7658 | if (registered) { | |
7659 | return; | |
7660 | } | |
7661 | registered = true; | |
7662 | ||
0e15264f BP |
7663 | unixctl_command_register("ofproto/list", "", 0, 0, |
7664 | ofproto_unixctl_list, NULL); | |
064af421 | 7665 | } |
52a90c29 BP |
7666 | \f |
7667 | /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.) | |
7668 | * | |
7669 | * This is deprecated. It is only for compatibility with broken device drivers | |
7670 | * in old versions of Linux that do not properly support VLANs when VLAN | |
7671 | * devices are not used. When broken device drivers are no longer in | |
7672 | * widespread use, we will delete these interfaces. */ | |
7673 | ||
7674 | /* Sets a 1-bit in the 4096-bit 'vlan_bitmap' for each VLAN ID that is matched | |
7675 | * (exactly) by an OpenFlow rule in 'ofproto'. */ | |
7676 | void | |
7677 | ofproto_get_vlan_usage(struct ofproto *ofproto, unsigned long int *vlan_bitmap) | |
7678 | { | |
ac4aa4c8 JR |
7679 | struct match match; |
7680 | struct cls_rule target; | |
d0918789 | 7681 | const struct oftable *oftable; |
52a90c29 | 7682 | |
ac4aa4c8 JR |
7683 | match_init_catchall(&match); |
7684 | match_set_vlan_vid_masked(&match, htons(VLAN_CFI), htons(VLAN_CFI)); | |
2b7b1427 | 7685 | cls_rule_init(&target, &match, 0, CLS_MAX_VERSION); |
ac4aa4c8 | 7686 | |
52a90c29 BP |
7687 | free(ofproto->vlan_bitmap); |
7688 | ofproto->vlan_bitmap = bitmap_allocate(4096); | |
7689 | ofproto->vlans_changed = false; | |
7690 | ||
d0918789 | 7691 | OFPROTO_FOR_EACH_TABLE (oftable, ofproto) { |
ac4aa4c8 | 7692 | struct rule *rule; |
52a90c29 | 7693 | |
5f0476ce | 7694 | CLS_FOR_EACH_TARGET (rule, cr, &oftable->cls, &target) { |
ac4aa4c8 JR |
7695 | if (minimask_get_vid_mask(&rule->cr.match.mask) == VLAN_VID_MASK) { |
7696 | uint16_t vid = miniflow_get_vid(&rule->cr.match.flow); | |
7697 | ||
7698 | bitmap_set1(vlan_bitmap, vid); | |
7699 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
52a90c29 BP |
7700 | } |
7701 | } | |
7702 | } | |
059ef3c6 EJ |
7703 | |
7704 | cls_rule_destroy(&target); | |
52a90c29 BP |
7705 | } |
7706 | ||
7707 | /* Returns true if new VLANs have come into use by the flow table since the | |
7708 | * last call to ofproto_get_vlan_usage(). | |
7709 | * | |
7710 | * We don't track when old VLANs stop being used. */ | |
7711 | bool | |
7712 | ofproto_has_vlan_usage_changed(const struct ofproto *ofproto) | |
7713 | { | |
7714 | return ofproto->vlans_changed; | |
7715 | } | |
7716 | ||
7717 | /* Configures a VLAN splinter binding between the ports identified by OpenFlow | |
7718 | * port numbers 'vlandev_ofp_port' and 'realdev_ofp_port'. If | |
7719 | * 'realdev_ofp_port' is nonzero, then the VLAN device is enslaved to the real | |
7720 | * device as a VLAN splinter for VLAN ID 'vid'. If 'realdev_ofp_port' is zero, | |
7721 | * then the VLAN device is un-enslaved. */ | |
7722 | int | |
4e022ec0 AW |
7723 | ofproto_port_set_realdev(struct ofproto *ofproto, ofp_port_t vlandev_ofp_port, |
7724 | ofp_port_t realdev_ofp_port, int vid) | |
52a90c29 BP |
7725 | { |
7726 | struct ofport *ofport; | |
7727 | int error; | |
7728 | ||
cb22974d | 7729 | ovs_assert(vlandev_ofp_port != realdev_ofp_port); |
52a90c29 BP |
7730 | |
7731 | ofport = ofproto_get_port(ofproto, vlandev_ofp_port); | |
7732 | if (!ofport) { | |
7733 | VLOG_WARN("%s: cannot set realdev on nonexistent port %"PRIu16, | |
7734 | ofproto->name, vlandev_ofp_port); | |
7735 | return EINVAL; | |
7736 | } | |
7737 | ||
7738 | if (!ofproto->ofproto_class->set_realdev) { | |
7739 | if (!vlandev_ofp_port) { | |
7740 | return 0; | |
7741 | } | |
7742 | VLOG_WARN("%s: vlan splinters not supported", ofproto->name); | |
7743 | return EOPNOTSUPP; | |
7744 | } | |
7745 | ||
7746 | error = ofproto->ofproto_class->set_realdev(ofport, realdev_ofp_port, vid); | |
7747 | if (error) { | |
7748 | VLOG_WARN("%s: setting realdev on port %"PRIu16" (%s) failed (%s)", | |
7749 | ofproto->name, vlandev_ofp_port, | |
10a89ef0 | 7750 | netdev_get_name(ofport->netdev), ovs_strerror(error)); |
52a90c29 BP |
7751 | } |
7752 | return error; | |
7753 | } |