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064af421 | 1 | /* |
c5f81b20 | 2 | * Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014 Nicira, Inc. |
43253595 | 3 | * Copyright (c) 2010 Jean Tourrilhes - HP-Labs. |
064af421 | 4 | * |
a14bc59f BP |
5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
6 | * you may not use this file except in compliance with the License. | |
7 | * You may obtain a copy of the License at: | |
064af421 | 8 | * |
a14bc59f BP |
9 | * http://www.apache.org/licenses/LICENSE-2.0 |
10 | * | |
11 | * Unless required by applicable law or agreed to in writing, software | |
12 | * distributed under the License is distributed on an "AS IS" BASIS, | |
13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
14 | * See the License for the specific language governing permissions and | |
15 | * limitations under the License. | |
064af421 BP |
16 | */ |
17 | ||
18 | #include <config.h> | |
19 | #include "ofproto.h" | |
20 | #include <errno.h> | |
21 | #include <inttypes.h> | |
064af421 BP |
22 | #include <stdbool.h> |
23 | #include <stdlib.h> | |
448a4b2f | 24 | #include <unistd.h> |
52a90c29 | 25 | #include "bitmap.h" |
10a24935 | 26 | #include "byte-order.h" |
064af421 | 27 | #include "classifier.h" |
da4a6191 | 28 | #include "connectivity.h" |
19a87e36 | 29 | #include "connmgr.h" |
064af421 | 30 | #include "coverage.h" |
4f2cad2c | 31 | #include "dynamic-string.h" |
ca0f572c BP |
32 | #include "hash.h" |
33 | #include "hmap.h" | |
254750ce | 34 | #include "meta-flow.h" |
064af421 | 35 | #include "netdev.h" |
09246b99 | 36 | #include "nx-match.h" |
f25d0cf3 | 37 | #include "ofp-actions.h" |
90bf1e07 | 38 | #include "ofp-errors.h" |
982697a4 | 39 | #include "ofp-msgs.h" |
064af421 | 40 | #include "ofp-print.h" |
fa37b408 | 41 | #include "ofp-util.h" |
064af421 | 42 | #include "ofpbuf.h" |
5bee6e26 | 43 | #include "ofproto-provider.h" |
064af421 BP |
44 | #include "openflow/nicira-ext.h" |
45 | #include "openflow/openflow.h" | |
06a0f3e2 | 46 | #include "ovs-rcu.h" |
064af421 BP |
47 | #include "packets.h" |
48 | #include "pinsched.h" | |
49 | #include "pktbuf.h" | |
50 | #include "poll-loop.h" | |
254750ce | 51 | #include "random.h" |
da4a6191 | 52 | #include "seq.h" |
064af421 | 53 | #include "shash.h" |
0d085684 | 54 | #include "simap.h" |
e8f9a7bb | 55 | #include "smap.h" |
b3c01ed3 | 56 | #include "sset.h" |
064af421 | 57 | #include "timeval.h" |
c4617b3c | 58 | #include "unaligned.h" |
4f2cad2c | 59 | #include "unixctl.h" |
5136ce49 | 60 | #include "vlog.h" |
777af88d | 61 | #include "bundles.h" |
064af421 | 62 | |
d98e6007 | 63 | VLOG_DEFINE_THIS_MODULE(ofproto); |
064af421 | 64 | |
d76f09ea | 65 | COVERAGE_DEFINE(ofproto_flush); |
d76f09ea BP |
66 | COVERAGE_DEFINE(ofproto_packet_out); |
67 | COVERAGE_DEFINE(ofproto_queue_req); | |
68 | COVERAGE_DEFINE(ofproto_recv_openflow); | |
69 | COVERAGE_DEFINE(ofproto_reinit_ports); | |
d76f09ea BP |
70 | COVERAGE_DEFINE(ofproto_update_port); |
71 | ||
f017d986 JR |
72 | /* Default fields to use for prefix tries in each flow table, unless something |
73 | * else is configured. */ | |
74 | const enum mf_field_id default_prefix_fields[2] = | |
75 | { MFF_IPV4_DST, MFF_IPV4_SRC }; | |
76 | ||
d0918789 BP |
77 | /* oftable. */ |
78 | static void oftable_init(struct oftable *); | |
79 | static void oftable_destroy(struct oftable *); | |
878ae780 | 80 | |
254750ce BP |
81 | static void oftable_set_name(struct oftable *, const char *name); |
82 | ||
834fe5cb BP |
83 | static enum ofperr evict_rules_from_table(struct oftable *, |
84 | unsigned int extra_space) | |
85 | OVS_REQUIRES(ofproto_mutex); | |
254750ce BP |
86 | static void oftable_disable_eviction(struct oftable *); |
87 | static void oftable_enable_eviction(struct oftable *, | |
88 | const struct mf_subfield *fields, | |
89 | size_t n_fields); | |
90 | ||
15aaf599 | 91 | static void oftable_remove_rule(struct rule *rule) OVS_REQUIRES(ofproto_mutex); |
8b81d1ef | 92 | static void oftable_remove_rule__(struct ofproto *, struct rule *) |
15aaf599 | 93 | OVS_REQUIRES(ofproto_mutex); |
064af421 | 94 | |
254750ce BP |
95 | /* A set of rules within a single OpenFlow table (oftable) that have the same |
96 | * values for the oftable's eviction_fields. A rule to be evicted, when one is | |
97 | * needed, is taken from the eviction group that contains the greatest number | |
98 | * of rules. | |
99 | * | |
100 | * An oftable owns any number of eviction groups, each of which contains any | |
101 | * number of rules. | |
102 | * | |
103 | * Membership in an eviction group is imprecise, based on the hash of the | |
104 | * oftable's eviction_fields (in the eviction_group's id_node.hash member). | |
105 | * That is, if two rules have different eviction_fields, but those | |
106 | * eviction_fields hash to the same value, then they will belong to the same | |
107 | * eviction_group anyway. | |
108 | * | |
109 | * (When eviction is not enabled on an oftable, we don't track any eviction | |
110 | * groups, to save time and space.) */ | |
111 | struct eviction_group { | |
112 | struct hmap_node id_node; /* In oftable's "eviction_groups_by_id". */ | |
113 | struct heap_node size_node; /* In oftable's "eviction_groups_by_size". */ | |
114 | struct heap rules; /* Contains "struct rule"s. */ | |
115 | }; | |
116 | ||
3d900aa7 BP |
117 | static bool choose_rule_to_evict(struct oftable *table, struct rule **rulep) |
118 | OVS_REQUIRES(ofproto_mutex); | |
3d900aa7 BP |
119 | static uint32_t rule_eviction_priority(struct ofproto *ofproto, struct rule *) |
120 | OVS_REQUIRES(ofproto_mutex);; | |
121 | static void eviction_group_add_rule(struct rule *) | |
122 | OVS_REQUIRES(ofproto_mutex); | |
123 | static void eviction_group_remove_rule(struct rule *) | |
124 | OVS_REQUIRES(ofproto_mutex); | |
f29152ca | 125 | |
a9b22b7f BP |
126 | /* Criteria that flow_mod and other operations use for selecting rules on |
127 | * which to operate. */ | |
128 | struct rule_criteria { | |
129 | /* An OpenFlow table or 255 for all tables. */ | |
130 | uint8_t table_id; | |
131 | ||
132 | /* OpenFlow matching criteria. Interpreted different in "loose" way by | |
133 | * collect_rules_loose() and "strict" way by collect_rules_strict(), as | |
134 | * defined in the OpenFlow spec. */ | |
135 | struct cls_rule cr; | |
136 | ||
137 | /* Matching criteria for the OpenFlow cookie. Consider a bit B in a rule's | |
138 | * cookie and the corresponding bits C in 'cookie' and M in 'cookie_mask'. | |
139 | * The rule will not be selected if M is 1 and B != C. */ | |
140 | ovs_be64 cookie; | |
141 | ovs_be64 cookie_mask; | |
142 | ||
143 | /* Selection based on actions within a rule: | |
144 | * | |
145 | * If out_port != OFPP_ANY, selects only rules that output to out_port. | |
146 | * If out_group != OFPG_ALL, select only rules that output to out_group. */ | |
147 | ofp_port_t out_port; | |
148 | uint32_t out_group; | |
dd51dae2 BP |
149 | |
150 | /* If true, collects only rules that are modifiable. */ | |
151 | bool include_hidden; | |
152 | bool include_readonly; | |
a9b22b7f BP |
153 | }; |
154 | ||
155 | static void rule_criteria_init(struct rule_criteria *, uint8_t table_id, | |
156 | const struct match *match, | |
157 | unsigned int priority, | |
158 | ovs_be64 cookie, ovs_be64 cookie_mask, | |
159 | ofp_port_t out_port, uint32_t out_group); | |
dd51dae2 BP |
160 | static void rule_criteria_require_rw(struct rule_criteria *, |
161 | bool can_write_readonly); | |
a9b22b7f BP |
162 | static void rule_criteria_destroy(struct rule_criteria *); |
163 | ||
35f48b8b BP |
164 | static enum ofperr collect_rules_loose(struct ofproto *, |
165 | const struct rule_criteria *, | |
166 | struct rule_collection *); | |
167 | ||
15aaf599 BP |
168 | /* A packet that needs to be passed to rule_execute(). |
169 | * | |
170 | * (We can't do this immediately from ofopgroup_complete() because that holds | |
171 | * ofproto_mutex, which rule_execute() needs released.) */ | |
35412852 BP |
172 | struct rule_execute { |
173 | struct list list_node; /* In struct ofproto's "rule_executes" list. */ | |
174 | struct rule *rule; /* Owns a reference to the rule. */ | |
175 | ofp_port_t in_port; | |
176 | struct ofpbuf *packet; /* Owns the packet. */ | |
177 | }; | |
178 | ||
15aaf599 | 179 | static void run_rule_executes(struct ofproto *) OVS_EXCLUDED(ofproto_mutex); |
35412852 BP |
180 | static void destroy_rule_executes(struct ofproto *); |
181 | ||
35f48b8b BP |
182 | struct learned_cookie { |
183 | union { | |
184 | /* In struct ofproto's 'learned_cookies' hmap. */ | |
185 | struct hmap_node hmap_node OVS_GUARDED_BY(ofproto_mutex); | |
186 | ||
187 | /* In 'dead_cookies' list when removed from hmap. */ | |
188 | struct list list_node; | |
189 | } u; | |
190 | ||
191 | /* Key. */ | |
192 | ovs_be64 cookie OVS_GUARDED_BY(ofproto_mutex); | |
193 | uint8_t table_id OVS_GUARDED_BY(ofproto_mutex); | |
194 | ||
195 | /* Number of references from "learn" actions. | |
196 | * | |
197 | * When this drops to 0, all of the flows in 'table_id' with the specified | |
198 | * 'cookie' are deleted. */ | |
199 | int n OVS_GUARDED_BY(ofproto_mutex); | |
200 | }; | |
201 | ||
202 | static const struct ofpact_learn *next_learn_with_delete( | |
203 | const struct rule_actions *, const struct ofpact_learn *start); | |
204 | ||
205 | static void learned_cookies_inc(struct ofproto *, const struct rule_actions *) | |
206 | OVS_REQUIRES(ofproto_mutex); | |
207 | static void learned_cookies_dec(struct ofproto *, const struct rule_actions *, | |
208 | struct list *dead_cookies) | |
209 | OVS_REQUIRES(ofproto_mutex); | |
210 | static void learned_cookies_flush(struct ofproto *, struct list *dead_cookies) | |
211 | OVS_REQUIRES(ofproto_mutex); | |
212 | ||
d0918789 | 213 | /* ofport. */ |
15aaf599 | 214 | static void ofport_destroy__(struct ofport *) OVS_EXCLUDED(ofproto_mutex); |
d0918789 BP |
215 | static void ofport_destroy(struct ofport *); |
216 | ||
217 | static void update_port(struct ofproto *, const char *devname); | |
218 | static int init_ports(struct ofproto *); | |
219 | static void reinit_ports(struct ofproto *); | |
7ee20df1 | 220 | |
fdcea803 GS |
221 | static long long int ofport_get_usage(const struct ofproto *, |
222 | ofp_port_t ofp_port); | |
223 | static void ofport_set_usage(struct ofproto *, ofp_port_t ofp_port, | |
224 | long long int last_used); | |
865b26a4 | 225 | static void ofport_remove_usage(struct ofproto *, ofp_port_t ofp_port); |
fdcea803 GS |
226 | |
227 | /* Ofport usage. | |
228 | * | |
229 | * Keeps track of the currently used and recently used ofport values and is | |
230 | * used to prevent immediate recycling of ofport values. */ | |
231 | struct ofport_usage { | |
232 | struct hmap_node hmap_node; /* In struct ofproto's "ofport_usage" hmap. */ | |
233 | ofp_port_t ofp_port; /* OpenFlow port number. */ | |
234 | long long int last_used; /* Last time the 'ofp_port' was used. LLONG_MAX | |
235 | represents in-use ofports. */ | |
236 | }; | |
237 | ||
254750ce | 238 | /* rule. */ |
254750ce | 239 | static void ofproto_rule_send_removed(struct rule *, uint8_t reason); |
834fe5cb | 240 | static bool rule_is_readonly(const struct rule *); |
254750ce | 241 | |
baae3d02 BP |
242 | /* The source of a flow_mod request, in the code that processes flow_mods. |
243 | * | |
244 | * A flow table modification request can be generated externally, via OpenFlow, | |
245 | * or internally through a function call. This structure indicates the source | |
246 | * of an OpenFlow-generated flow_mod. For an internal flow_mod, it isn't | |
247 | * meaningful and thus supplied as NULL. */ | |
248 | struct flow_mod_requester { | |
249 | struct ofconn *ofconn; /* Connection on which flow_mod arrived. */ | |
834fe5cb | 250 | ovs_be32 xid; /* OpenFlow xid of flow_mod request. */ |
baae3d02 BP |
251 | }; |
252 | ||
d0918789 | 253 | /* OpenFlow. */ |
baae3d02 BP |
254 | static enum ofperr add_flow(struct ofproto *, struct ofputil_flow_mod *, |
255 | const struct flow_mod_requester *); | |
256 | ||
257 | static enum ofperr modify_flows__(struct ofproto *, struct ofputil_flow_mod *, | |
258 | const struct rule_collection *, | |
259 | const struct flow_mod_requester *); | |
9ca4a86f BP |
260 | static void delete_flows__(const struct rule_collection *, |
261 | enum ofp_flow_removed_reason, | |
262 | const struct flow_mod_requester *) | |
15aaf599 | 263 | OVS_REQUIRES(ofproto_mutex); |
834fe5cb BP |
264 | |
265 | static enum ofperr send_buffered_packet(struct ofconn *, uint32_t buffer_id, | |
266 | struct rule *) | |
267 | OVS_REQUIRES(ofproto_mutex); | |
268 | ||
7e9f8266 BP |
269 | static bool ofproto_group_exists__(const struct ofproto *ofproto, |
270 | uint32_t group_id) | |
271 | OVS_REQ_RDLOCK(ofproto->groups_rwlock); | |
84d68566 SH |
272 | static bool ofproto_group_exists(const struct ofproto *ofproto, |
273 | uint32_t group_id) | |
7e9f8266 | 274 | OVS_EXCLUDED(ofproto->groups_rwlock); |
7395c052 | 275 | static enum ofperr add_group(struct ofproto *, struct ofputil_group_mod *); |
b20f4073 | 276 | static void handle_openflow(struct ofconn *, const struct ofpbuf *); |
baae3d02 | 277 | static enum ofperr handle_flow_mod__(struct ofproto *, |
e3b56933 | 278 | struct ofputil_flow_mod *, |
baae3d02 | 279 | const struct flow_mod_requester *) |
15aaf599 | 280 | OVS_EXCLUDED(ofproto_mutex); |
65e0be10 BP |
281 | static void calc_duration(long long int start, long long int now, |
282 | uint32_t *sec, uint32_t *nsec); | |
f29152ca | 283 | |
d0918789 BP |
284 | /* ofproto. */ |
285 | static uint64_t pick_datapath_id(const struct ofproto *); | |
286 | static uint64_t pick_fallback_dpid(void); | |
287 | static void ofproto_destroy__(struct ofproto *); | |
ada3428f | 288 | static void update_mtu(struct ofproto *, struct ofport *); |
6b3f7f02 | 289 | static void meter_delete(struct ofproto *, uint32_t first, uint32_t last); |
062fea06 | 290 | static void meter_insert_rule(struct rule *); |
f29152ca | 291 | |
d0918789 | 292 | /* unixctl. */ |
abe529af | 293 | static void ofproto_unixctl_init(void); |
f29152ca | 294 | |
abe529af BP |
295 | /* All registered ofproto classes, in probe order. */ |
296 | static const struct ofproto_class **ofproto_classes; | |
297 | static size_t n_ofproto_classes; | |
298 | static size_t allocated_ofproto_classes; | |
7aa697dd | 299 | |
15aaf599 BP |
300 | /* Global lock that protects all flow table operations. */ |
301 | struct ovs_mutex ofproto_mutex = OVS_MUTEX_INITIALIZER; | |
abe7b10f | 302 | |
e79a6c83 | 303 | unsigned ofproto_flow_limit = OFPROTO_FLOW_LIMIT_DEFAULT; |
72310b04 | 304 | unsigned ofproto_max_idle = OFPROTO_MAX_IDLE_DEFAULT; |
380f49c4 | 305 | |
e79a6c83 | 306 | size_t n_handlers, n_revalidators; |
f2eee189 AW |
307 | size_t n_dpdk_rxqs; |
308 | char *pmd_cpu_mask; | |
6567010f | 309 | |
f797957a | 310 | /* Map from datapath name to struct ofproto, for use by unixctl commands. */ |
abe529af | 311 | static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos); |
ebe482fd | 312 | |
e1b1d06a JP |
313 | /* Initial mappings of port to OpenFlow number mappings. */ |
314 | static struct shash init_ofp_ports = SHASH_INITIALIZER(&init_ofp_ports); | |
315 | ||
abe529af | 316 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
f29152ca | 317 | |
40358701 GS |
318 | /* The default value of true waits for flow restore. */ |
319 | static bool flow_restore_wait = true; | |
320 | ||
b0408fca JP |
321 | /* Must be called to initialize the ofproto library. |
322 | * | |
323 | * The caller may pass in 'iface_hints', which contains an shash of | |
324 | * "iface_hint" elements indexed by the interface's name. The provider | |
325 | * may use these hints to describe the startup configuration in order to | |
326 | * reinitialize its state. The caller owns the provided data, so a | |
327 | * provider will make copies of anything required. An ofproto provider | |
328 | * will remove any existing state that is not described by the hint, and | |
329 | * may choose to remove it all. */ | |
330 | void | |
331 | ofproto_init(const struct shash *iface_hints) | |
abe529af | 332 | { |
e1b1d06a | 333 | struct shash_node *node; |
b0408fca | 334 | size_t i; |
f29152ca | 335 | |
b0408fca JP |
336 | ofproto_class_register(&ofproto_dpif_class); |
337 | ||
e1b1d06a JP |
338 | /* Make a local copy, since we don't own 'iface_hints' elements. */ |
339 | SHASH_FOR_EACH(node, iface_hints) { | |
340 | const struct iface_hint *orig_hint = node->data; | |
341 | struct iface_hint *new_hint = xmalloc(sizeof *new_hint); | |
342 | const char *br_type = ofproto_normalize_type(orig_hint->br_type); | |
343 | ||
344 | new_hint->br_name = xstrdup(orig_hint->br_name); | |
345 | new_hint->br_type = xstrdup(br_type); | |
346 | new_hint->ofp_port = orig_hint->ofp_port; | |
347 | ||
348 | shash_add(&init_ofp_ports, node->name, new_hint); | |
349 | } | |
350 | ||
b0408fca | 351 | for (i = 0; i < n_ofproto_classes; i++) { |
e1b1d06a | 352 | ofproto_classes[i]->init(&init_ofp_ports); |
abe529af BP |
353 | } |
354 | } | |
f29152ca | 355 | |
abe529af BP |
356 | /* 'type' should be a normalized datapath type, as returned by |
357 | * ofproto_normalize_type(). Returns the corresponding ofproto_class | |
358 | * structure, or a null pointer if there is none registered for 'type'. */ | |
359 | static const struct ofproto_class * | |
360 | ofproto_class_find__(const char *type) | |
361 | { | |
362 | size_t i; | |
f29152ca | 363 | |
abe529af BP |
364 | for (i = 0; i < n_ofproto_classes; i++) { |
365 | const struct ofproto_class *class = ofproto_classes[i]; | |
366 | struct sset types; | |
367 | bool found; | |
064af421 | 368 | |
abe529af BP |
369 | sset_init(&types); |
370 | class->enumerate_types(&types); | |
371 | found = sset_contains(&types, type); | |
372 | sset_destroy(&types); | |
bcf84111 | 373 | |
abe529af BP |
374 | if (found) { |
375 | return class; | |
376 | } | |
377 | } | |
378 | VLOG_WARN("unknown datapath type %s", type); | |
379 | return NULL; | |
380 | } | |
064af421 | 381 | |
abe529af BP |
382 | /* Registers a new ofproto class. After successful registration, new ofprotos |
383 | * of that type can be created using ofproto_create(). */ | |
384 | int | |
385 | ofproto_class_register(const struct ofproto_class *new_class) | |
386 | { | |
387 | size_t i; | |
7aa697dd | 388 | |
abe529af BP |
389 | for (i = 0; i < n_ofproto_classes; i++) { |
390 | if (ofproto_classes[i] == new_class) { | |
391 | return EEXIST; | |
392 | } | |
393 | } | |
064af421 | 394 | |
abe529af BP |
395 | if (n_ofproto_classes >= allocated_ofproto_classes) { |
396 | ofproto_classes = x2nrealloc(ofproto_classes, | |
397 | &allocated_ofproto_classes, | |
398 | sizeof *ofproto_classes); | |
399 | } | |
400 | ofproto_classes[n_ofproto_classes++] = new_class; | |
401 | return 0; | |
402 | } | |
064af421 | 403 | |
abe529af BP |
404 | /* Unregisters a datapath provider. 'type' must have been previously |
405 | * registered and not currently be in use by any ofprotos. After | |
406 | * unregistration new datapaths of that type cannot be opened using | |
407 | * ofproto_create(). */ | |
408 | int | |
409 | ofproto_class_unregister(const struct ofproto_class *class) | |
410 | { | |
411 | size_t i; | |
76ce9432 | 412 | |
abe529af BP |
413 | for (i = 0; i < n_ofproto_classes; i++) { |
414 | if (ofproto_classes[i] == class) { | |
415 | for (i++; i < n_ofproto_classes; i++) { | |
416 | ofproto_classes[i - 1] = ofproto_classes[i]; | |
417 | } | |
418 | n_ofproto_classes--; | |
419 | return 0; | |
420 | } | |
421 | } | |
422 | VLOG_WARN("attempted to unregister an ofproto class that is not " | |
423 | "registered"); | |
424 | return EAFNOSUPPORT; | |
425 | } | |
4a4cdb3b | 426 | |
f79e673f BP |
427 | /* Clears 'types' and enumerates all registered ofproto types into it. The |
428 | * caller must first initialize the sset. */ | |
429 | void | |
430 | ofproto_enumerate_types(struct sset *types) | |
431 | { | |
abe529af | 432 | size_t i; |
064af421 | 433 | |
c799c306 | 434 | sset_clear(types); |
abe529af BP |
435 | for (i = 0; i < n_ofproto_classes; i++) { |
436 | ofproto_classes[i]->enumerate_types(types); | |
437 | } | |
f79e673f | 438 | } |
064af421 | 439 | |
f79e673f BP |
440 | /* Returns the fully spelled out name for the given ofproto 'type'. |
441 | * | |
442 | * Normalized type string can be compared with strcmp(). Unnormalized type | |
443 | * string might be the same even if they have different spellings. */ | |
444 | const char * | |
445 | ofproto_normalize_type(const char *type) | |
446 | { | |
abe529af | 447 | return type && type[0] ? type : "system"; |
f79e673f | 448 | } |
064af421 | 449 | |
f79e673f BP |
450 | /* Clears 'names' and enumerates the names of all known created ofprotos with |
451 | * the given 'type'. The caller must first initialize the sset. Returns 0 if | |
452 | * successful, otherwise a positive errno value. | |
453 | * | |
454 | * Some kinds of datapaths might not be practically enumerable. This is not | |
455 | * considered an error. */ | |
456 | int | |
457 | ofproto_enumerate_names(const char *type, struct sset *names) | |
458 | { | |
abe529af BP |
459 | const struct ofproto_class *class = ofproto_class_find__(type); |
460 | return class ? class->enumerate_names(type, names) : EAFNOSUPPORT; | |
239ad7d1 | 461 | } |
7aa697dd | 462 | |
064af421 | 463 | int |
abe529af | 464 | ofproto_create(const char *datapath_name, const char *datapath_type, |
064af421 BP |
465 | struct ofproto **ofprotop) |
466 | { | |
abe529af BP |
467 | const struct ofproto_class *class; |
468 | struct ofproto *ofproto; | |
064af421 | 469 | int error; |
c2f0373a | 470 | int i; |
064af421 BP |
471 | |
472 | *ofprotop = NULL; | |
473 | ||
7aa697dd BP |
474 | ofproto_unixctl_init(); |
475 | ||
abe529af BP |
476 | datapath_type = ofproto_normalize_type(datapath_type); |
477 | class = ofproto_class_find__(datapath_type); | |
478 | if (!class) { | |
479 | VLOG_WARN("could not create datapath %s of unknown type %s", | |
480 | datapath_name, datapath_type); | |
481 | return EAFNOSUPPORT; | |
064af421 BP |
482 | } |
483 | ||
abe529af BP |
484 | ofproto = class->alloc(); |
485 | if (!ofproto) { | |
486 | VLOG_ERR("failed to allocate datapath %s of type %s", | |
487 | datapath_name, datapath_type); | |
488 | return ENOMEM; | |
489 | } | |
490 | ||
491 | /* Initialize. */ | |
abe7b10f | 492 | ovs_mutex_lock(&ofproto_mutex); |
abe529af BP |
493 | memset(ofproto, 0, sizeof *ofproto); |
494 | ofproto->ofproto_class = class; | |
495 | ofproto->name = xstrdup(datapath_name); | |
496 | ofproto->type = xstrdup(datapath_type); | |
497 | hmap_insert(&all_ofprotos, &ofproto->hmap_node, | |
498 | hash_string(ofproto->name, 0)); | |
499 | ofproto->datapath_id = 0; | |
8402c74b | 500 | ofproto->forward_bpdu = false; |
abe529af | 501 | ofproto->fallback_dpid = pick_fallback_dpid(); |
061bfea4 BP |
502 | ofproto->mfr_desc = NULL; |
503 | ofproto->hw_desc = NULL; | |
504 | ofproto->sw_desc = NULL; | |
505 | ofproto->serial_desc = NULL; | |
506 | ofproto->dp_desc = NULL; | |
7257b535 | 507 | ofproto->frag_handling = OFPC_FRAG_NORMAL; |
abe529af | 508 | hmap_init(&ofproto->ports); |
fdcea803 | 509 | hmap_init(&ofproto->ofport_usage); |
abe529af | 510 | shash_init(&ofproto->port_by_name); |
e1b1d06a | 511 | simap_init(&ofproto->ofp_requests); |
430dbb14 | 512 | ofproto->max_ports = ofp_to_u16(OFPP_MAX); |
448c2fa8 | 513 | ofproto->eviction_group_timer = LLONG_MIN; |
6c1491fb BP |
514 | ofproto->tables = NULL; |
515 | ofproto->n_tables = 0; | |
98eaac36 | 516 | hindex_init(&ofproto->cookies); |
35f48b8b | 517 | hmap_init(&ofproto->learned_cookies); |
e503cc19 | 518 | list_init(&ofproto->expirable); |
abe529af | 519 | ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name); |
35412852 | 520 | guarded_list_init(&ofproto->rule_executes); |
52a90c29 BP |
521 | ofproto->vlan_bitmap = NULL; |
522 | ofproto->vlans_changed = false; | |
ada3428f | 523 | ofproto->min_mtu = INT_MAX; |
7395c052 NZ |
524 | ovs_rwlock_init(&ofproto->groups_rwlock); |
525 | hmap_init(&ofproto->groups); | |
abe7b10f | 526 | ovs_mutex_unlock(&ofproto_mutex); |
7cb279c2 SH |
527 | ofproto->ogf.capabilities = OFPGFC_CHAINING | OFPGFC_SELECT_LIVENESS | |
528 | OFPGFC_SELECT_WEIGHT; | |
08d1e234 BP |
529 | for (i = 0; i < 4; i++) { |
530 | ofproto->ogf.max_groups[i] = OFPG_MAX; | |
531 | ofproto->ogf.ofpacts[i] = (UINT64_C(1) << N_OFPACTS) - 1; | |
532 | } | |
abe529af | 533 | |
0f5f95a9 | 534 | error = ofproto->ofproto_class->construct(ofproto); |
19a87e36 | 535 | if (error) { |
abe529af | 536 | VLOG_ERR("failed to open datapath %s: %s", |
10a89ef0 | 537 | datapath_name, ovs_strerror(error)); |
58f19539 | 538 | connmgr_destroy(ofproto->connmgr); |
abe529af | 539 | ofproto_destroy__(ofproto); |
19a87e36 BP |
540 | return error; |
541 | } | |
073e2a6f | 542 | |
c2f0373a | 543 | /* Check that hidden tables, if any, are at the end. */ |
cb22974d | 544 | ovs_assert(ofproto->n_tables); |
c2f0373a BP |
545 | for (i = 0; i + 1 < ofproto->n_tables; i++) { |
546 | enum oftable_flags flags = ofproto->tables[i].flags; | |
547 | enum oftable_flags next_flags = ofproto->tables[i + 1].flags; | |
548 | ||
cb22974d | 549 | ovs_assert(!(flags & OFTABLE_HIDDEN) || next_flags & OFTABLE_HIDDEN); |
c2f0373a | 550 | } |
19a87e36 | 551 | |
abe529af | 552 | ofproto->datapath_id = pick_datapath_id(ofproto); |
abe529af | 553 | init_ports(ofproto); |
7aa697dd | 554 | |
9cae45dc JR |
555 | /* Initialize meters table. */ |
556 | if (ofproto->ofproto_class->meter_get_features) { | |
557 | ofproto->ofproto_class->meter_get_features(ofproto, | |
558 | &ofproto->meter_features); | |
559 | } else { | |
560 | memset(&ofproto->meter_features, 0, sizeof ofproto->meter_features); | |
561 | } | |
562 | ofproto->meters = xzalloc((ofproto->meter_features.max_meters + 1) | |
563 | * sizeof(struct meter *)); | |
564 | ||
abe529af | 565 | *ofprotop = ofproto; |
064af421 BP |
566 | return 0; |
567 | } | |
568 | ||
91858960 BP |
569 | /* Must be called (only) by an ofproto implementation in its constructor |
570 | * function. See the large comment on 'construct' in struct ofproto_class for | |
571 | * details. */ | |
0f5f95a9 BP |
572 | void |
573 | ofproto_init_tables(struct ofproto *ofproto, int n_tables) | |
574 | { | |
575 | struct oftable *table; | |
576 | ||
cb22974d BP |
577 | ovs_assert(!ofproto->n_tables); |
578 | ovs_assert(n_tables >= 1 && n_tables <= 255); | |
0f5f95a9 BP |
579 | |
580 | ofproto->n_tables = n_tables; | |
581 | ofproto->tables = xmalloc(n_tables * sizeof *ofproto->tables); | |
582 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
583 | oftable_init(table); | |
584 | } | |
585 | } | |
586 | ||
91858960 BP |
587 | /* To be optionally called (only) by an ofproto implementation in its |
588 | * constructor function. See the large comment on 'construct' in struct | |
589 | * ofproto_class for details. | |
590 | * | |
591 | * Sets the maximum number of ports to 'max_ports'. The ofproto generic layer | |
592 | * will then ensure that actions passed into the ofproto implementation will | |
593 | * not refer to OpenFlow ports numbered 'max_ports' or higher. If this | |
594 | * function is not called, there will be no such restriction. | |
595 | * | |
596 | * Reserved ports numbered OFPP_MAX and higher are special and not subject to | |
597 | * the 'max_ports' restriction. */ | |
598 | void | |
430dbb14 | 599 | ofproto_init_max_ports(struct ofproto *ofproto, uint16_t max_ports) |
91858960 | 600 | { |
430dbb14 | 601 | ovs_assert(max_ports <= ofp_to_u16(OFPP_MAX)); |
91858960 BP |
602 | ofproto->max_ports = max_ports; |
603 | } | |
604 | ||
e825ace2 BP |
605 | uint64_t |
606 | ofproto_get_datapath_id(const struct ofproto *ofproto) | |
607 | { | |
608 | return ofproto->datapath_id; | |
609 | } | |
610 | ||
064af421 BP |
611 | void |
612 | ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id) | |
613 | { | |
614 | uint64_t old_dpid = p->datapath_id; | |
fa60c019 | 615 | p->datapath_id = datapath_id ? datapath_id : pick_datapath_id(p); |
064af421 | 616 | if (p->datapath_id != old_dpid) { |
76ce9432 BP |
617 | /* Force all active connections to reconnect, since there is no way to |
618 | * notify a controller that the datapath ID has changed. */ | |
fa05809b | 619 | ofproto_reconnect_controllers(p); |
064af421 BP |
620 | } |
621 | } | |
622 | ||
76ce9432 BP |
623 | void |
624 | ofproto_set_controllers(struct ofproto *p, | |
625 | const struct ofproto_controller *controllers, | |
1d9ffc17 | 626 | size_t n_controllers, uint32_t allowed_versions) |
76ce9432 | 627 | { |
1d9ffc17 SH |
628 | connmgr_set_controllers(p->connmgr, controllers, n_controllers, |
629 | allowed_versions); | |
064af421 BP |
630 | } |
631 | ||
31681a5d JP |
632 | void |
633 | ofproto_set_fail_mode(struct ofproto *p, enum ofproto_fail_mode fail_mode) | |
634 | { | |
19a87e36 | 635 | connmgr_set_fail_mode(p->connmgr, fail_mode); |
31681a5d JP |
636 | } |
637 | ||
fa05809b BP |
638 | /* Drops the connections between 'ofproto' and all of its controllers, forcing |
639 | * them to reconnect. */ | |
640 | void | |
641 | ofproto_reconnect_controllers(struct ofproto *ofproto) | |
642 | { | |
19a87e36 | 643 | connmgr_reconnect(ofproto->connmgr); |
917e50e1 BP |
644 | } |
645 | ||
646 | /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s | |
647 | * in-band control should guarantee access, in the same way that in-band | |
648 | * control guarantees access to OpenFlow controllers. */ | |
649 | void | |
650 | ofproto_set_extra_in_band_remotes(struct ofproto *ofproto, | |
651 | const struct sockaddr_in *extras, size_t n) | |
652 | { | |
19a87e36 | 653 | connmgr_set_extra_in_band_remotes(ofproto->connmgr, extras, n); |
917e50e1 BP |
654 | } |
655 | ||
b1da6250 BP |
656 | /* Sets the OpenFlow queue used by flows set up by in-band control on |
657 | * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control | |
658 | * flows will use the default queue. */ | |
659 | void | |
660 | ofproto_set_in_band_queue(struct ofproto *ofproto, int queue_id) | |
661 | { | |
19a87e36 | 662 | connmgr_set_in_band_queue(ofproto->connmgr, queue_id); |
b1da6250 BP |
663 | } |
664 | ||
084f5290 SH |
665 | /* Sets the number of flows at which eviction from the kernel flow table |
666 | * will occur. */ | |
667 | void | |
e79a6c83 | 668 | ofproto_set_flow_limit(unsigned limit) |
084f5290 | 669 | { |
e79a6c83 | 670 | ofproto_flow_limit = limit; |
084f5290 SH |
671 | } |
672 | ||
72310b04 JS |
673 | /* Sets the maximum idle time for flows in the datapath before they are |
674 | * expired. */ | |
675 | void | |
676 | ofproto_set_max_idle(unsigned max_idle) | |
677 | { | |
678 | ofproto_max_idle = max_idle; | |
679 | } | |
680 | ||
b53055f4 | 681 | /* If forward_bpdu is true, the NORMAL action will forward frames with |
8402c74b SS |
682 | * reserved (e.g. STP) destination Ethernet addresses. if forward_bpdu is false, |
683 | * the NORMAL action will drop these frames. */ | |
684 | void | |
685 | ofproto_set_forward_bpdu(struct ofproto *ofproto, bool forward_bpdu) | |
686 | { | |
687 | bool old_val = ofproto->forward_bpdu; | |
688 | ofproto->forward_bpdu = forward_bpdu; | |
689 | if (old_val != ofproto->forward_bpdu) { | |
690 | if (ofproto->ofproto_class->forward_bpdu_changed) { | |
691 | ofproto->ofproto_class->forward_bpdu_changed(ofproto); | |
692 | } | |
b53055f4 | 693 | } |
8402c74b SS |
694 | } |
695 | ||
e764773c | 696 | /* Sets the MAC aging timeout for the OFPP_NORMAL action on 'ofproto' to |
c4069512 BP |
697 | * 'idle_time', in seconds, and the maximum number of MAC table entries to |
698 | * 'max_entries'. */ | |
e764773c | 699 | void |
c4069512 BP |
700 | ofproto_set_mac_table_config(struct ofproto *ofproto, unsigned idle_time, |
701 | size_t max_entries) | |
e764773c | 702 | { |
c4069512 BP |
703 | if (ofproto->ofproto_class->set_mac_table_config) { |
704 | ofproto->ofproto_class->set_mac_table_config(ofproto, idle_time, | |
705 | max_entries); | |
e764773c BP |
706 | } |
707 | } | |
708 | ||
7c38d0a5 FL |
709 | /* Multicast snooping configuration. */ |
710 | ||
711 | /* Configures multicast snooping on 'ofproto' using the settings | |
712 | * defined in 's'. If 's' is NULL, disables multicast snooping. | |
713 | * | |
714 | * Returns 0 if successful, otherwise a positive errno value. */ | |
715 | int | |
716 | ofproto_set_mcast_snooping(struct ofproto *ofproto, | |
717 | const struct ofproto_mcast_snooping_settings *s) | |
718 | { | |
719 | return (ofproto->ofproto_class->set_mcast_snooping | |
720 | ? ofproto->ofproto_class->set_mcast_snooping(ofproto, s) | |
721 | : EOPNOTSUPP); | |
722 | } | |
723 | ||
724 | /* Configures multicast snooping flood setting on 'ofp_port' of 'ofproto'. | |
725 | * | |
726 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
727 | int | |
728 | ofproto_port_set_mcast_snooping(struct ofproto *ofproto, void *aux, bool flood) | |
729 | { | |
730 | return (ofproto->ofproto_class->set_mcast_snooping_port | |
731 | ? ofproto->ofproto_class->set_mcast_snooping_port(ofproto, aux, | |
732 | flood) | |
733 | : EOPNOTSUPP); | |
734 | } | |
735 | ||
f2eee189 AW |
736 | void |
737 | ofproto_set_n_dpdk_rxqs(int n_rxqs) | |
738 | { | |
739 | n_dpdk_rxqs = MAX(n_rxqs, 0); | |
740 | } | |
741 | ||
742 | void | |
743 | ofproto_set_cpu_mask(const char *cmask) | |
744 | { | |
745 | free(pmd_cpu_mask); | |
746 | ||
747 | pmd_cpu_mask = cmask ? xstrdup(cmask) : NULL; | |
748 | } | |
749 | ||
448a4b2f | 750 | void |
30ea0da7 | 751 | ofproto_set_threads(int n_handlers_, int n_revalidators_) |
448a4b2f | 752 | { |
e79a6c83 EJ |
753 | int threads = MAX(count_cpu_cores(), 2); |
754 | ||
30ea0da7 GS |
755 | n_revalidators = MAX(n_revalidators_, 0); |
756 | n_handlers = MAX(n_handlers_, 0); | |
e79a6c83 EJ |
757 | |
758 | if (!n_revalidators) { | |
759 | n_revalidators = n_handlers | |
760 | ? MAX(threads - (int) n_handlers, 1) | |
761 | : threads / 4 + 1; | |
762 | } | |
763 | ||
764 | if (!n_handlers) { | |
765 | n_handlers = MAX(threads - (int) n_revalidators, 1); | |
766 | } | |
448a4b2f AW |
767 | } |
768 | ||
8b6ff729 BP |
769 | void |
770 | ofproto_set_dp_desc(struct ofproto *p, const char *dp_desc) | |
771 | { | |
772 | free(p->dp_desc); | |
773 | p->dp_desc = dp_desc ? xstrdup(dp_desc) : NULL; | |
774 | } | |
775 | ||
064af421 | 776 | int |
81e2083f | 777 | ofproto_set_snoops(struct ofproto *ofproto, const struct sset *snoops) |
064af421 | 778 | { |
19a87e36 | 779 | return connmgr_set_snoops(ofproto->connmgr, snoops); |
064af421 BP |
780 | } |
781 | ||
782 | int | |
0193b2af JG |
783 | ofproto_set_netflow(struct ofproto *ofproto, |
784 | const struct netflow_options *nf_options) | |
064af421 | 785 | { |
abe529af BP |
786 | if (nf_options && sset_is_empty(&nf_options->collectors)) { |
787 | nf_options = NULL; | |
788 | } | |
789 | ||
790 | if (ofproto->ofproto_class->set_netflow) { | |
791 | return ofproto->ofproto_class->set_netflow(ofproto, nf_options); | |
064af421 | 792 | } else { |
abe529af | 793 | return nf_options ? EOPNOTSUPP : 0; |
064af421 BP |
794 | } |
795 | } | |
796 | ||
abe529af | 797 | int |
72b06300 BP |
798 | ofproto_set_sflow(struct ofproto *ofproto, |
799 | const struct ofproto_sflow_options *oso) | |
800 | { | |
abe529af BP |
801 | if (oso && sset_is_empty(&oso->targets)) { |
802 | oso = NULL; | |
803 | } | |
72b06300 | 804 | |
abe529af BP |
805 | if (ofproto->ofproto_class->set_sflow) { |
806 | return ofproto->ofproto_class->set_sflow(ofproto, oso); | |
72b06300 | 807 | } else { |
abe529af | 808 | return oso ? EOPNOTSUPP : 0; |
72b06300 BP |
809 | } |
810 | } | |
29089a54 RL |
811 | |
812 | int | |
813 | ofproto_set_ipfix(struct ofproto *ofproto, | |
814 | const struct ofproto_ipfix_bridge_exporter_options *bo, | |
815 | const struct ofproto_ipfix_flow_exporter_options *fo, | |
816 | size_t n_fo) | |
817 | { | |
818 | if (ofproto->ofproto_class->set_ipfix) { | |
819 | return ofproto->ofproto_class->set_ipfix(ofproto, bo, fo, n_fo); | |
820 | } else { | |
821 | return (bo || fo) ? EOPNOTSUPP : 0; | |
822 | } | |
823 | } | |
40358701 GS |
824 | |
825 | void | |
826 | ofproto_set_flow_restore_wait(bool flow_restore_wait_db) | |
827 | { | |
828 | flow_restore_wait = flow_restore_wait_db; | |
829 | } | |
830 | ||
831 | bool | |
832 | ofproto_get_flow_restore_wait(void) | |
833 | { | |
834 | return flow_restore_wait; | |
835 | } | |
836 | ||
e7934396 | 837 | \f |
21f7563c JP |
838 | /* Spanning Tree Protocol (STP) configuration. */ |
839 | ||
840 | /* Configures STP on 'ofproto' using the settings defined in 's'. If | |
841 | * 's' is NULL, disables STP. | |
842 | * | |
843 | * Returns 0 if successful, otherwise a positive errno value. */ | |
844 | int | |
845 | ofproto_set_stp(struct ofproto *ofproto, | |
846 | const struct ofproto_stp_settings *s) | |
847 | { | |
848 | return (ofproto->ofproto_class->set_stp | |
849 | ? ofproto->ofproto_class->set_stp(ofproto, s) | |
850 | : EOPNOTSUPP); | |
851 | } | |
852 | ||
853 | /* Retrieves STP status of 'ofproto' and stores it in 's'. If the | |
854 | * 'enabled' member of 's' is false, then the other members are not | |
855 | * meaningful. | |
856 | * | |
857 | * Returns 0 if successful, otherwise a positive errno value. */ | |
858 | int | |
859 | ofproto_get_stp_status(struct ofproto *ofproto, | |
860 | struct ofproto_stp_status *s) | |
861 | { | |
862 | return (ofproto->ofproto_class->get_stp_status | |
863 | ? ofproto->ofproto_class->get_stp_status(ofproto, s) | |
864 | : EOPNOTSUPP); | |
865 | } | |
866 | ||
867 | /* Configures STP on 'ofp_port' of 'ofproto' using the settings defined | |
868 | * in 's'. The caller is responsible for assigning STP port numbers | |
869 | * (using the 'port_num' member in the range of 1 through 255, inclusive) | |
870 | * and ensuring there are no duplicates. If the 's' is NULL, then STP | |
871 | * is disabled on the port. | |
872 | * | |
873 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
874 | int | |
4e022ec0 | 875 | ofproto_port_set_stp(struct ofproto *ofproto, ofp_port_t ofp_port, |
21f7563c JP |
876 | const struct ofproto_port_stp_settings *s) |
877 | { | |
878 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
879 | if (!ofport) { | |
880 | VLOG_WARN("%s: cannot configure STP on nonexistent port %"PRIu16, | |
881 | ofproto->name, ofp_port); | |
882 | return ENODEV; | |
883 | } | |
884 | ||
885 | return (ofproto->ofproto_class->set_stp_port | |
886 | ? ofproto->ofproto_class->set_stp_port(ofport, s) | |
887 | : EOPNOTSUPP); | |
888 | } | |
889 | ||
890 | /* Retrieves STP port status of 'ofp_port' on 'ofproto' and stores it in | |
891 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
892 | * are not meaningful. | |
893 | * | |
894 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
895 | int | |
4e022ec0 | 896 | ofproto_port_get_stp_status(struct ofproto *ofproto, ofp_port_t ofp_port, |
21f7563c JP |
897 | struct ofproto_port_stp_status *s) |
898 | { | |
899 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
900 | if (!ofport) { | |
b0a5c43b JP |
901 | VLOG_WARN_RL(&rl, "%s: cannot get STP status on nonexistent " |
902 | "port %"PRIu16, ofproto->name, ofp_port); | |
21f7563c JP |
903 | return ENODEV; |
904 | } | |
905 | ||
906 | return (ofproto->ofproto_class->get_stp_port_status | |
907 | ? ofproto->ofproto_class->get_stp_port_status(ofport, s) | |
908 | : EOPNOTSUPP); | |
909 | } | |
fd28ce3a JS |
910 | |
911 | /* Retrieves STP port statistics of 'ofp_port' on 'ofproto' and stores it in | |
912 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
913 | * are not meaningful. | |
914 | * | |
915 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
916 | int | |
917 | ofproto_port_get_stp_stats(struct ofproto *ofproto, ofp_port_t ofp_port, | |
918 | struct ofproto_port_stp_stats *s) | |
919 | { | |
920 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
921 | if (!ofport) { | |
922 | VLOG_WARN_RL(&rl, "%s: cannot get STP stats on nonexistent " | |
923 | "port %"PRIu16, ofproto->name, ofp_port); | |
924 | return ENODEV; | |
925 | } | |
926 | ||
927 | return (ofproto->ofproto_class->get_stp_port_stats | |
928 | ? ofproto->ofproto_class->get_stp_port_stats(ofport, s) | |
929 | : EOPNOTSUPP); | |
930 | } | |
9efd308e DV |
931 | |
932 | /* Rapid Spanning Tree Protocol (RSTP) configuration. */ | |
933 | ||
934 | /* Configures RSTP on 'ofproto' using the settings defined in 's'. If | |
935 | * 's' is NULL, disables RSTP. | |
936 | * | |
937 | * Returns 0 if successful, otherwise a positive errno value. */ | |
938 | int | |
939 | ofproto_set_rstp(struct ofproto *ofproto, | |
940 | const struct ofproto_rstp_settings *s) | |
941 | { | |
942 | if (!ofproto->ofproto_class->set_rstp) { | |
943 | return EOPNOTSUPP; | |
944 | } | |
945 | ofproto->ofproto_class->set_rstp(ofproto, s); | |
946 | return 0; | |
947 | } | |
948 | ||
949 | /* Retrieves RSTP status of 'ofproto' and stores it in 's'. If the | |
950 | * 'enabled' member of 's' is false, then the other members are not | |
951 | * meaningful. | |
952 | * | |
953 | * Returns 0 if successful, otherwise a positive errno value. */ | |
954 | int | |
955 | ofproto_get_rstp_status(struct ofproto *ofproto, | |
956 | struct ofproto_rstp_status *s) | |
957 | { | |
958 | if (!ofproto->ofproto_class->get_rstp_status) { | |
959 | return EOPNOTSUPP; | |
960 | } | |
961 | ofproto->ofproto_class->get_rstp_status(ofproto, s); | |
962 | return 0; | |
963 | } | |
964 | ||
965 | /* Configures RSTP on 'ofp_port' of 'ofproto' using the settings defined | |
966 | * in 's'. The caller is responsible for assigning RSTP port numbers | |
967 | * (using the 'port_num' member in the range of 1 through 255, inclusive) | |
968 | * and ensuring there are no duplicates. If the 's' is NULL, then RSTP | |
969 | * is disabled on the port. | |
970 | * | |
971 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
972 | int | |
973 | ofproto_port_set_rstp(struct ofproto *ofproto, ofp_port_t ofp_port, | |
974 | const struct ofproto_port_rstp_settings *s) | |
975 | { | |
976 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
977 | if (!ofport) { | |
978 | VLOG_WARN("%s: cannot configure RSTP on nonexistent port %"PRIu16, | |
979 | ofproto->name, ofp_port); | |
980 | return ENODEV; | |
981 | } | |
982 | ||
983 | if (!ofproto->ofproto_class->set_rstp_port) { | |
984 | return EOPNOTSUPP; | |
985 | } | |
986 | ofproto->ofproto_class->set_rstp_port(ofport, s); | |
987 | return 0; | |
988 | } | |
989 | ||
990 | /* Retrieves RSTP port status of 'ofp_port' on 'ofproto' and stores it in | |
991 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
992 | * are not meaningful. | |
993 | * | |
994 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
995 | int | |
996 | ofproto_port_get_rstp_status(struct ofproto *ofproto, ofp_port_t ofp_port, | |
997 | struct ofproto_port_rstp_status *s) | |
998 | { | |
999 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1000 | if (!ofport) { | |
1001 | VLOG_WARN_RL(&rl, "%s: cannot get RSTP status on nonexistent " | |
1002 | "port %"PRIu16, ofproto->name, ofp_port); | |
1003 | return ENODEV; | |
1004 | } | |
1005 | ||
1006 | if (!ofproto->ofproto_class->get_rstp_port_status) { | |
1007 | return EOPNOTSUPP; | |
1008 | } | |
1009 | ofproto->ofproto_class->get_rstp_port_status(ofport, s); | |
1010 | return 0; | |
1011 | } | |
21f7563c | 1012 | \f |
8b36f51e EJ |
1013 | /* Queue DSCP configuration. */ |
1014 | ||
1015 | /* Registers meta-data associated with the 'n_qdscp' Qualities of Service | |
1016 | * 'queues' attached to 'ofport'. This data is not intended to be sufficient | |
1017 | * to implement QoS. Instead, it is used to implement features which require | |
1018 | * knowledge of what queues exist on a port, and some basic information about | |
1019 | * them. | |
1020 | * | |
1021 | * Returns 0 if successful, otherwise a positive errno value. */ | |
1022 | int | |
4e022ec0 | 1023 | ofproto_port_set_queues(struct ofproto *ofproto, ofp_port_t ofp_port, |
8b36f51e EJ |
1024 | const struct ofproto_port_queue *queues, |
1025 | size_t n_queues) | |
1026 | { | |
1027 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1028 | ||
1029 | if (!ofport) { | |
1030 | VLOG_WARN("%s: cannot set queues on nonexistent port %"PRIu16, | |
1031 | ofproto->name, ofp_port); | |
1032 | return ENODEV; | |
1033 | } | |
1034 | ||
1035 | return (ofproto->ofproto_class->set_queues | |
1036 | ? ofproto->ofproto_class->set_queues(ofport, queues, n_queues) | |
1037 | : EOPNOTSUPP); | |
1038 | } | |
1039 | \f | |
e7934396 BP |
1040 | /* Connectivity Fault Management configuration. */ |
1041 | ||
892815f5 | 1042 | /* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */ |
e7934396 | 1043 | void |
4e022ec0 | 1044 | ofproto_port_clear_cfm(struct ofproto *ofproto, ofp_port_t ofp_port) |
e7934396 | 1045 | { |
abe529af BP |
1046 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1047 | if (ofport && ofproto->ofproto_class->set_cfm) { | |
a5610457 | 1048 | ofproto->ofproto_class->set_cfm(ofport, NULL); |
e7934396 BP |
1049 | } |
1050 | } | |
72b06300 | 1051 | |
892815f5 | 1052 | /* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes |
93b8df38 EJ |
1053 | * basic configuration from the configuration members in 'cfm', and the remote |
1054 | * maintenance point ID from remote_mpid. Ignores the statistics members of | |
1055 | * 'cfm'. | |
e7934396 | 1056 | * |
892815f5 | 1057 | * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */ |
e7934396 | 1058 | void |
4e022ec0 | 1059 | ofproto_port_set_cfm(struct ofproto *ofproto, ofp_port_t ofp_port, |
a5610457 | 1060 | const struct cfm_settings *s) |
e7934396 BP |
1061 | { |
1062 | struct ofport *ofport; | |
abe529af | 1063 | int error; |
e7934396 | 1064 | |
abe529af | 1065 | ofport = ofproto_get_port(ofproto, ofp_port); |
e7934396 | 1066 | if (!ofport) { |
892815f5 BP |
1067 | VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16, |
1068 | ofproto->name, ofp_port); | |
e7934396 BP |
1069 | return; |
1070 | } | |
1071 | ||
93b8df38 EJ |
1072 | /* XXX: For configuration simplicity, we only support one remote_mpid |
1073 | * outside of the CFM module. It's not clear if this is the correct long | |
1074 | * term solution or not. */ | |
abe529af | 1075 | error = (ofproto->ofproto_class->set_cfm |
a5610457 | 1076 | ? ofproto->ofproto_class->set_cfm(ofport, s) |
abe529af BP |
1077 | : EOPNOTSUPP); |
1078 | if (error) { | |
1079 | VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed (%s)", | |
1080 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
10a89ef0 | 1081 | ovs_strerror(error)); |
e7934396 | 1082 | } |
e7934396 | 1083 | } |
e7934396 | 1084 | |
ccc09689 EJ |
1085 | /* Configures BFD on 'ofp_port' in 'ofproto'. This function has no effect if |
1086 | * 'ofproto' does not have a port 'ofp_port'. */ | |
1087 | void | |
4e022ec0 | 1088 | ofproto_port_set_bfd(struct ofproto *ofproto, ofp_port_t ofp_port, |
ccc09689 EJ |
1089 | const struct smap *cfg) |
1090 | { | |
1091 | struct ofport *ofport; | |
1092 | int error; | |
1093 | ||
1094 | ofport = ofproto_get_port(ofproto, ofp_port); | |
1095 | if (!ofport) { | |
1096 | VLOG_WARN("%s: cannot configure bfd on nonexistent port %"PRIu16, | |
1097 | ofproto->name, ofp_port); | |
e8999bdc | 1098 | return; |
ccc09689 EJ |
1099 | } |
1100 | ||
1101 | error = (ofproto->ofproto_class->set_bfd | |
1102 | ? ofproto->ofproto_class->set_bfd(ofport, cfg) | |
1103 | : EOPNOTSUPP); | |
1104 | if (error) { | |
1105 | VLOG_WARN("%s: bfd configuration on port %"PRIu16" (%s) failed (%s)", | |
1106 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
10a89ef0 | 1107 | ovs_strerror(error)); |
ccc09689 EJ |
1108 | } |
1109 | } | |
1110 | ||
8f5514fe AW |
1111 | /* Checks the status change of BFD on 'ofport'. |
1112 | * | |
1113 | * Returns true if 'ofproto_class' does not support 'bfd_status_changed'. */ | |
1114 | bool | |
1115 | ofproto_port_bfd_status_changed(struct ofproto *ofproto, ofp_port_t ofp_port) | |
1116 | { | |
1117 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1118 | return (ofport && ofproto->ofproto_class->bfd_status_changed | |
1119 | ? ofproto->ofproto_class->bfd_status_changed(ofport) | |
1120 | : true); | |
1121 | } | |
1122 | ||
88bf179a | 1123 | /* Populates 'status' with the status of BFD on 'ofport'. Returns 0 on |
8f5514fe AW |
1124 | * success. Returns a positive errno otherwise. Has no effect if 'ofp_port' |
1125 | * is not an OpenFlow port in 'ofproto'. | |
88bf179a AW |
1126 | * |
1127 | * The caller must provide and own '*status'. */ | |
ccc09689 | 1128 | int |
4e022ec0 | 1129 | ofproto_port_get_bfd_status(struct ofproto *ofproto, ofp_port_t ofp_port, |
ccc09689 EJ |
1130 | struct smap *status) |
1131 | { | |
1132 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1133 | return (ofport && ofproto->ofproto_class->get_bfd_status | |
1134 | ? ofproto->ofproto_class->get_bfd_status(ofport, status) | |
1135 | : EOPNOTSUPP); | |
1136 | } | |
1137 | ||
fa066f01 BP |
1138 | /* Checks the status of LACP negotiation for 'ofp_port' within ofproto. |
1139 | * Returns 1 if LACP partner information for 'ofp_port' is up-to-date, | |
1140 | * 0 if LACP partner information is not current (generally indicating a | |
1141 | * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */ | |
1142 | int | |
4e022ec0 | 1143 | ofproto_port_is_lacp_current(struct ofproto *ofproto, ofp_port_t ofp_port) |
fa066f01 | 1144 | { |
abe529af BP |
1145 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1146 | return (ofport && ofproto->ofproto_class->port_is_lacp_current | |
1147 | ? ofproto->ofproto_class->port_is_lacp_current(ofport) | |
fa066f01 | 1148 | : -1); |
e7934396 | 1149 | } |
e7934396 | 1150 | \f |
fa066f01 | 1151 | /* Bundles. */ |
e7934396 | 1152 | |
abe529af BP |
1153 | /* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'. |
1154 | * A bundle is the same concept as a Port in OVSDB, that is, it consists of one | |
1155 | * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN | |
1156 | * configuration plus, if there is more than one slave, a bonding | |
1157 | * configuration. | |
1158 | * | |
1159 | * If 'aux' is already registered then this function updates its configuration | |
1160 | * to 's'. Otherwise, this function registers a new bundle. | |
1161 | * | |
1162 | * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL | |
1163 | * port. */ | |
1164 | int | |
1165 | ofproto_bundle_register(struct ofproto *ofproto, void *aux, | |
1166 | const struct ofproto_bundle_settings *s) | |
fa066f01 | 1167 | { |
abe529af BP |
1168 | return (ofproto->ofproto_class->bundle_set |
1169 | ? ofproto->ofproto_class->bundle_set(ofproto, aux, s) | |
1170 | : EOPNOTSUPP); | |
fa066f01 BP |
1171 | } |
1172 | ||
abe529af BP |
1173 | /* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'. |
1174 | * If no such bundle has been registered, this has no effect. */ | |
1175 | int | |
1176 | ofproto_bundle_unregister(struct ofproto *ofproto, void *aux) | |
e7934396 | 1177 | { |
abe529af | 1178 | return ofproto_bundle_register(ofproto, aux, NULL); |
e7934396 | 1179 | } |
fa066f01 | 1180 | |
e7934396 | 1181 | \f |
abe529af BP |
1182 | /* Registers a mirror associated with client data pointer 'aux' in 'ofproto'. |
1183 | * If 'aux' is already registered then this function updates its configuration | |
c06bba01 | 1184 | * to 's'. Otherwise, this function registers a new mirror. */ |
abe529af BP |
1185 | int |
1186 | ofproto_mirror_register(struct ofproto *ofproto, void *aux, | |
1187 | const struct ofproto_mirror_settings *s) | |
064af421 | 1188 | { |
abe529af BP |
1189 | return (ofproto->ofproto_class->mirror_set |
1190 | ? ofproto->ofproto_class->mirror_set(ofproto, aux, s) | |
1191 | : EOPNOTSUPP); | |
064af421 BP |
1192 | } |
1193 | ||
abe529af BP |
1194 | /* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'. |
1195 | * If no mirror has been registered, this has no effect. */ | |
1196 | int | |
1197 | ofproto_mirror_unregister(struct ofproto *ofproto, void *aux) | |
064af421 | 1198 | { |
abe529af | 1199 | return ofproto_mirror_register(ofproto, aux, NULL); |
064af421 BP |
1200 | } |
1201 | ||
9d24de3b JP |
1202 | /* Retrieves statistics from mirror associated with client data pointer |
1203 | * 'aux' in 'ofproto'. Stores packet and byte counts in 'packets' and | |
1204 | * 'bytes', respectively. If a particular counters is not supported, | |
1205 | * the appropriate argument is set to UINT64_MAX. */ | |
1206 | int | |
1207 | ofproto_mirror_get_stats(struct ofproto *ofproto, void *aux, | |
1208 | uint64_t *packets, uint64_t *bytes) | |
1209 | { | |
1210 | if (!ofproto->ofproto_class->mirror_get_stats) { | |
1211 | *packets = *bytes = UINT64_MAX; | |
1212 | return EOPNOTSUPP; | |
1213 | } | |
1214 | ||
1215 | return ofproto->ofproto_class->mirror_get_stats(ofproto, aux, | |
1216 | packets, bytes); | |
1217 | } | |
1218 | ||
abe529af BP |
1219 | /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on |
1220 | * which all packets are flooded, instead of using MAC learning. If | |
1221 | * 'flood_vlans' is NULL, then MAC learning applies to all VLANs. | |
1222 | * | |
1223 | * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL | |
1224 | * port. */ | |
1225 | int | |
1226 | ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans) | |
abdfe474 | 1227 | { |
abe529af BP |
1228 | return (ofproto->ofproto_class->set_flood_vlans |
1229 | ? ofproto->ofproto_class->set_flood_vlans(ofproto, flood_vlans) | |
1230 | : EOPNOTSUPP); | |
abdfe474 JP |
1231 | } |
1232 | ||
abe529af BP |
1233 | /* Returns true if 'aux' is a registered bundle that is currently in use as the |
1234 | * output for a mirror. */ | |
1235 | bool | |
b4affc74 | 1236 | ofproto_is_mirror_output_bundle(const struct ofproto *ofproto, void *aux) |
abe529af BP |
1237 | { |
1238 | return (ofproto->ofproto_class->is_mirror_output_bundle | |
1239 | ? ofproto->ofproto_class->is_mirror_output_bundle(ofproto, aux) | |
1240 | : false); | |
1241 | } | |
1242 | \f | |
254750ce BP |
1243 | /* Configuration of OpenFlow tables. */ |
1244 | ||
1245 | /* Returns the number of OpenFlow tables in 'ofproto'. */ | |
1246 | int | |
1247 | ofproto_get_n_tables(const struct ofproto *ofproto) | |
1248 | { | |
1249 | return ofproto->n_tables; | |
1250 | } | |
1251 | ||
adcf00ba AZ |
1252 | /* Returns the number of Controller visible OpenFlow tables |
1253 | * in 'ofproto'. This number will exclude Hidden tables. | |
1254 | * This funtion's return value should be less or equal to that of | |
1255 | * ofproto_get_n_tables() . */ | |
1256 | uint8_t | |
1257 | ofproto_get_n_visible_tables(const struct ofproto *ofproto) | |
1258 | { | |
1259 | uint8_t n = ofproto->n_tables; | |
1260 | ||
1261 | /* Count only non-hidden tables in the number of tables. (Hidden tables, | |
1262 | * if present, are always at the end.) */ | |
1263 | while(n && (ofproto->tables[n - 1].flags & OFTABLE_HIDDEN)) { | |
1264 | n--; | |
1265 | } | |
1266 | ||
1267 | return n; | |
1268 | } | |
1269 | ||
254750ce BP |
1270 | /* Configures the OpenFlow table in 'ofproto' with id 'table_id' with the |
1271 | * settings from 's'. 'table_id' must be in the range 0 through the number of | |
1272 | * OpenFlow tables in 'ofproto' minus 1, inclusive. | |
1273 | * | |
1274 | * For read-only tables, only the name may be configured. */ | |
1275 | void | |
1276 | ofproto_configure_table(struct ofproto *ofproto, int table_id, | |
1277 | const struct ofproto_table_settings *s) | |
1278 | { | |
1279 | struct oftable *table; | |
1280 | ||
cb22974d | 1281 | ovs_assert(table_id >= 0 && table_id < ofproto->n_tables); |
254750ce BP |
1282 | table = &ofproto->tables[table_id]; |
1283 | ||
1284 | oftable_set_name(table, s->name); | |
1285 | ||
1286 | if (table->flags & OFTABLE_READONLY) { | |
1287 | return; | |
1288 | } | |
1289 | ||
1290 | if (s->groups) { | |
1291 | oftable_enable_eviction(table, s->groups, s->n_groups); | |
1292 | } else { | |
1293 | oftable_disable_eviction(table); | |
1294 | } | |
1295 | ||
1296 | table->max_flows = s->max_flows; | |
afae68b1 | 1297 | |
f358a2cb JR |
1298 | if (classifier_set_prefix_fields(&table->cls, |
1299 | s->prefix_fields, s->n_prefix_fields)) { | |
1300 | /* XXX: Trigger revalidation. */ | |
1301 | } | |
834fe5cb BP |
1302 | |
1303 | ovs_mutex_lock(&ofproto_mutex); | |
1304 | evict_rules_from_table(table, 0); | |
1305 | ovs_mutex_unlock(&ofproto_mutex); | |
254750ce BP |
1306 | } |
1307 | \f | |
81e2083f BP |
1308 | bool |
1309 | ofproto_has_snoops(const struct ofproto *ofproto) | |
1310 | { | |
1311 | return connmgr_has_snoops(ofproto->connmgr); | |
1312 | } | |
1313 | ||
064af421 | 1314 | void |
81e2083f | 1315 | ofproto_get_snoops(const struct ofproto *ofproto, struct sset *snoops) |
064af421 | 1316 | { |
19a87e36 | 1317 | connmgr_get_snoops(ofproto->connmgr, snoops); |
064af421 BP |
1318 | } |
1319 | ||
15aaf599 | 1320 | static void |
b20f4073 | 1321 | ofproto_rule_delete__(struct rule *rule, uint8_t reason) |
15aaf599 BP |
1322 | OVS_REQUIRES(ofproto_mutex) |
1323 | { | |
9ca4a86f | 1324 | struct rule_collection rules; |
15aaf599 | 1325 | |
9ca4a86f BP |
1326 | rules.rules = rules.stub; |
1327 | rules.n = 1; | |
1328 | rules.stub[0] = rule; | |
1329 | delete_flows__(&rules, reason, NULL); | |
15aaf599 BP |
1330 | } |
1331 | ||
a73fcd71 | 1332 | /* Deletes 'rule' from 'ofproto'. |
8037acb4 | 1333 | * |
b74cb5d8 BP |
1334 | * Within an ofproto implementation, this function allows an ofproto |
1335 | * implementation to destroy any rules that remain when its ->destruct() | |
1336 | * function is called. This function is not suitable for use elsewhere in an | |
1337 | * ofproto implementation. | |
1338 | * | |
b74cb5d8 | 1339 | * This function implements steps 4.4 and 4.5 in the section titled "Rule Life |
8b81d1ef | 1340 | * Cycle" in ofproto-provider.h. */ |
b74cb5d8 | 1341 | void |
8b81d1ef | 1342 | ofproto_rule_delete(struct ofproto *ofproto, struct rule *rule) |
15aaf599 | 1343 | OVS_EXCLUDED(ofproto_mutex) |
7ee20df1 | 1344 | { |
834fe5cb BP |
1345 | /* This skips the ofmonitor and flow-removed notifications because the |
1346 | * switch is being deleted and any OpenFlow channels have been or soon will | |
1347 | * be killed. */ | |
15aaf599 | 1348 | ovs_mutex_lock(&ofproto_mutex); |
8b81d1ef | 1349 | oftable_remove_rule__(ofproto, rule); |
8037acb4 | 1350 | ofproto->ofproto_class->rule_delete(rule); |
15aaf599 | 1351 | ovs_mutex_unlock(&ofproto_mutex); |
8037acb4 BP |
1352 | } |
1353 | ||
1354 | static void | |
1355 | ofproto_flush__(struct ofproto *ofproto) | |
15aaf599 | 1356 | OVS_EXCLUDED(ofproto_mutex) |
8037acb4 | 1357 | { |
d0918789 | 1358 | struct oftable *table; |
7ee20df1 | 1359 | |
3948503a | 1360 | /* This will flush all datapath flows. */ |
7ee20df1 BP |
1361 | if (ofproto->ofproto_class->flush) { |
1362 | ofproto->ofproto_class->flush(ofproto); | |
1363 | } | |
1364 | ||
3948503a JR |
1365 | /* XXX: There is a small race window here, where new datapath flows can be |
1366 | * created by upcall handlers based on the existing flow table. We can not | |
1367 | * call ofproto class flush while holding 'ofproto_mutex' to prevent this, | |
1368 | * as then we could deadlock on syncing with the handler threads waiting on | |
1369 | * the same mutex. */ | |
1370 | ||
15aaf599 | 1371 | ovs_mutex_lock(&ofproto_mutex); |
b772ded8 | 1372 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
78c8df12 | 1373 | struct rule *rule; |
7ee20df1 | 1374 | |
5c67e4af BP |
1375 | if (table->flags & OFTABLE_HIDDEN) { |
1376 | continue; | |
1377 | } | |
1378 | ||
78c8df12 | 1379 | CLS_FOR_EACH_SAFE (rule, cr, &table->cls) { |
b20f4073 | 1380 | ofproto_rule_delete__(rule, OFPRR_DELETE); |
7ee20df1 BP |
1381 | } |
1382 | } | |
3948503a JR |
1383 | /* XXX: Concurrent handler threads may insert new learned flows based on |
1384 | * learn actions of the now deleted flows right after we release | |
1385 | * 'ofproto_mutex'. */ | |
15aaf599 | 1386 | ovs_mutex_unlock(&ofproto_mutex); |
7ee20df1 BP |
1387 | } |
1388 | ||
7395c052 NZ |
1389 | static void delete_group(struct ofproto *ofproto, uint32_t group_id); |
1390 | ||
abe529af BP |
1391 | static void |
1392 | ofproto_destroy__(struct ofproto *ofproto) | |
15aaf599 | 1393 | OVS_EXCLUDED(ofproto_mutex) |
abe529af | 1394 | { |
d0918789 | 1395 | struct oftable *table; |
6c1491fb | 1396 | |
35412852 | 1397 | destroy_rule_executes(ofproto); |
7395c052 | 1398 | delete_group(ofproto, OFPG_ALL); |
5c09b672 GS |
1399 | |
1400 | guarded_list_destroy(&ofproto->rule_executes); | |
7395c052 NZ |
1401 | ovs_rwlock_destroy(&ofproto->groups_rwlock); |
1402 | hmap_destroy(&ofproto->groups); | |
1403 | ||
abe529af BP |
1404 | hmap_remove(&all_ofprotos, &ofproto->hmap_node); |
1405 | free(ofproto->name); | |
955a7127 | 1406 | free(ofproto->type); |
abe529af BP |
1407 | free(ofproto->mfr_desc); |
1408 | free(ofproto->hw_desc); | |
1409 | free(ofproto->sw_desc); | |
1410 | free(ofproto->serial_desc); | |
1411 | free(ofproto->dp_desc); | |
abe529af | 1412 | hmap_destroy(&ofproto->ports); |
fdcea803 | 1413 | hmap_destroy(&ofproto->ofport_usage); |
abe529af | 1414 | shash_destroy(&ofproto->port_by_name); |
e1b1d06a | 1415 | simap_destroy(&ofproto->ofp_requests); |
6c1491fb | 1416 | |
b772ded8 | 1417 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
d0918789 | 1418 | oftable_destroy(table); |
6c1491fb BP |
1419 | } |
1420 | free(ofproto->tables); | |
fa066f01 | 1421 | |
1406c79b BP |
1422 | ovs_assert(hindex_is_empty(&ofproto->cookies)); |
1423 | hindex_destroy(&ofproto->cookies); | |
1424 | ||
35f48b8b BP |
1425 | ovs_assert(hmap_is_empty(&ofproto->learned_cookies)); |
1426 | hmap_destroy(&ofproto->learned_cookies); | |
1427 | ||
52a90c29 BP |
1428 | free(ofproto->vlan_bitmap); |
1429 | ||
abe529af BP |
1430 | ofproto->ofproto_class->dealloc(ofproto); |
1431 | } | |
fa066f01 | 1432 | |
064af421 BP |
1433 | void |
1434 | ofproto_destroy(struct ofproto *p) | |
15aaf599 | 1435 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 1436 | { |
ca0f572c | 1437 | struct ofport *ofport, *next_ofport; |
fdcea803 | 1438 | struct ofport_usage *usage, *next_usage; |
064af421 BP |
1439 | |
1440 | if (!p) { | |
1441 | return; | |
1442 | } | |
1443 | ||
717de9ff JR |
1444 | if (p->meters) { |
1445 | meter_delete(p, 1, p->meter_features.max_meters); | |
1446 | p->meter_features.max_meters = 0; | |
1447 | free(p->meters); | |
1448 | p->meters = NULL; | |
1449 | } | |
1450 | ||
7ee20df1 | 1451 | ofproto_flush__(p); |
4e8e4213 | 1452 | HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) { |
abe529af | 1453 | ofport_destroy(ofport); |
064af421 | 1454 | } |
064af421 | 1455 | |
fdcea803 GS |
1456 | HMAP_FOR_EACH_SAFE (usage, next_usage, hmap_node, &p->ofport_usage) { |
1457 | hmap_remove(&p->ofport_usage, &usage->hmap_node); | |
1458 | free(usage); | |
1459 | } | |
1460 | ||
abe529af | 1461 | p->ofproto_class->destruct(p); |
58f19539 DDP |
1462 | |
1463 | /* We should not postpone this because it involves deleting a listening | |
1464 | * socket which we may want to reopen soon. 'connmgr' should not be used | |
1465 | * by other threads */ | |
1466 | connmgr_destroy(p->connmgr); | |
1467 | ||
f416c8d6 JR |
1468 | /* Destroying rules is deferred, must have 'ofproto' around for them. */ |
1469 | ovsrcu_postpone(ofproto_destroy__, p); | |
064af421 BP |
1470 | } |
1471 | ||
abe529af BP |
1472 | /* Destroys the datapath with the respective 'name' and 'type'. With the Linux |
1473 | * kernel datapath, for example, this destroys the datapath in the kernel, and | |
1474 | * with the netdev-based datapath, it tears down the data structures that | |
1475 | * represent the datapath. | |
1476 | * | |
1477 | * The datapath should not be currently open as an ofproto. */ | |
064af421 | 1478 | int |
abe529af | 1479 | ofproto_delete(const char *name, const char *type) |
064af421 | 1480 | { |
abe529af BP |
1481 | const struct ofproto_class *class = ofproto_class_find__(type); |
1482 | return (!class ? EAFNOSUPPORT | |
1483 | : !class->del ? EACCES | |
1484 | : class->del(type, name)); | |
064af421 BP |
1485 | } |
1486 | ||
e9e28be3 BP |
1487 | static void |
1488 | process_port_change(struct ofproto *ofproto, int error, char *devname) | |
1489 | { | |
1490 | if (error == ENOBUFS) { | |
1491 | reinit_ports(ofproto); | |
1492 | } else if (!error) { | |
1493 | update_port(ofproto, devname); | |
1494 | free(devname); | |
1495 | } | |
1496 | } | |
1497 | ||
11a574a7 JP |
1498 | int |
1499 | ofproto_type_run(const char *datapath_type) | |
1500 | { | |
1501 | const struct ofproto_class *class; | |
1502 | int error; | |
1503 | ||
1504 | datapath_type = ofproto_normalize_type(datapath_type); | |
1505 | class = ofproto_class_find__(datapath_type); | |
1506 | ||
1507 | error = class->type_run ? class->type_run(datapath_type) : 0; | |
1508 | if (error && error != EAGAIN) { | |
1509 | VLOG_ERR_RL(&rl, "%s: type_run failed (%s)", | |
10a89ef0 | 1510 | datapath_type, ovs_strerror(error)); |
11a574a7 JP |
1511 | } |
1512 | return error; | |
1513 | } | |
1514 | ||
11a574a7 JP |
1515 | void |
1516 | ofproto_type_wait(const char *datapath_type) | |
1517 | { | |
1518 | const struct ofproto_class *class; | |
1519 | ||
1520 | datapath_type = ofproto_normalize_type(datapath_type); | |
1521 | class = ofproto_class_find__(datapath_type); | |
1522 | ||
1523 | if (class->type_wait) { | |
1524 | class->type_wait(datapath_type); | |
1525 | } | |
1526 | } | |
1527 | ||
064af421 | 1528 | int |
abe529af | 1529 | ofproto_run(struct ofproto *p) |
064af421 | 1530 | { |
064af421 | 1531 | int error; |
da4a6191 | 1532 | uint64_t new_seq; |
064af421 | 1533 | |
abe529af | 1534 | error = p->ofproto_class->run(p); |
5fcc0d00 | 1535 | if (error && error != EAGAIN) { |
10a89ef0 | 1536 | VLOG_ERR_RL(&rl, "%s: run failed (%s)", p->name, ovs_strerror(error)); |
149f577a JG |
1537 | } |
1538 | ||
35412852 BP |
1539 | run_rule_executes(p); |
1540 | ||
448c2fa8 EJ |
1541 | /* Restore the eviction group heap invariant occasionally. */ |
1542 | if (p->eviction_group_timer < time_msec()) { | |
1543 | size_t i; | |
1544 | ||
1545 | p->eviction_group_timer = time_msec() + 1000; | |
1546 | ||
1547 | for (i = 0; i < p->n_tables; i++) { | |
1548 | struct oftable *table = &p->tables[i]; | |
1549 | struct eviction_group *evg; | |
448c2fa8 EJ |
1550 | struct rule *rule; |
1551 | ||
1552 | if (!table->eviction_fields) { | |
1553 | continue; | |
1554 | } | |
1555 | ||
1a9bb326 EJ |
1556 | if (classifier_count(&table->cls) > 100000) { |
1557 | static struct vlog_rate_limit count_rl = | |
1558 | VLOG_RATE_LIMIT_INIT(1, 1); | |
1559 | VLOG_WARN_RL(&count_rl, "Table %"PRIuSIZE" has an excessive" | |
1560 | " number of rules: %d", i, | |
1561 | classifier_count(&table->cls)); | |
1562 | } | |
1563 | ||
15aaf599 | 1564 | ovs_mutex_lock(&ofproto_mutex); |
5f0476ce | 1565 | CLS_FOR_EACH (rule, cr, &table->cls) { |
6d56c1f1 K |
1566 | if (rule->idle_timeout || rule->hard_timeout) { |
1567 | if (!rule->eviction_group) { | |
1568 | eviction_group_add_rule(rule); | |
1569 | } else { | |
1570 | heap_raw_change(&rule->evg_node, | |
1571 | rule_eviction_priority(p, rule)); | |
1572 | } | |
448c2fa8 EJ |
1573 | } |
1574 | } | |
6d56c1f1 K |
1575 | |
1576 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { | |
1577 | heap_rebuild(&evg->rules); | |
1578 | } | |
15aaf599 | 1579 | ovs_mutex_unlock(&ofproto_mutex); |
448c2fa8 EJ |
1580 | } |
1581 | } | |
1582 | ||
5bf0e941 | 1583 | if (p->ofproto_class->port_poll) { |
7436ed80 BP |
1584 | char *devname; |
1585 | ||
5bf0e941 BP |
1586 | while ((error = p->ofproto_class->port_poll(p, &devname)) != EAGAIN) { |
1587 | process_port_change(p, error, devname); | |
064af421 | 1588 | } |
e9e28be3 | 1589 | } |
031d8bff | 1590 | |
da4a6191 JS |
1591 | new_seq = seq_read(connectivity_seq_get()); |
1592 | if (new_seq != p->change_seq) { | |
1593 | struct sset devnames; | |
1594 | const char *devname; | |
1595 | struct ofport *ofport; | |
1596 | ||
1597 | /* Update OpenFlow port status for any port whose netdev has changed. | |
1598 | * | |
1599 | * Refreshing a given 'ofport' can cause an arbitrary ofport to be | |
1600 | * destroyed, so it's not safe to update ports directly from the | |
1601 | * HMAP_FOR_EACH loop, or even to use HMAP_FOR_EACH_SAFE. Instead, we | |
1602 | * need this two-phase approach. */ | |
1603 | sset_init(&devnames); | |
1604 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
61501798 AW |
1605 | uint64_t port_change_seq; |
1606 | ||
1607 | port_change_seq = netdev_get_change_seq(ofport->netdev); | |
1608 | if (ofport->change_seq != port_change_seq) { | |
1609 | ofport->change_seq = port_change_seq; | |
1610 | sset_add(&devnames, netdev_get_name(ofport->netdev)); | |
1611 | } | |
031d8bff | 1612 | } |
da4a6191 JS |
1613 | SSET_FOR_EACH (devname, &devnames) { |
1614 | update_port(p, devname); | |
1615 | } | |
1616 | sset_destroy(&devnames); | |
1617 | ||
1618 | p->change_seq = new_seq; | |
064af421 BP |
1619 | } |
1620 | ||
834fe5cb | 1621 | connmgr_run(p->connmgr, handle_openflow); |
064af421 | 1622 | |
5fcc0d00 BP |
1623 | return error; |
1624 | } | |
1625 | ||
064af421 BP |
1626 | void |
1627 | ofproto_wait(struct ofproto *p) | |
1628 | { | |
abe529af | 1629 | p->ofproto_class->wait(p); |
5bf0e941 BP |
1630 | if (p->ofproto_class->port_poll_wait) { |
1631 | p->ofproto_class->port_poll_wait(p); | |
e7934396 | 1632 | } |
da4a6191 | 1633 | seq_wait(connectivity_seq_get(), p->change_seq); |
834fe5cb | 1634 | connmgr_wait(p->connmgr); |
064af421 BP |
1635 | } |
1636 | ||
064af421 BP |
1637 | bool |
1638 | ofproto_is_alive(const struct ofproto *p) | |
1639 | { | |
19a87e36 | 1640 | return connmgr_has_controllers(p->connmgr); |
064af421 BP |
1641 | } |
1642 | ||
0d085684 BP |
1643 | /* Adds some memory usage statistics for 'ofproto' into 'usage', for use with |
1644 | * memory_report(). */ | |
1645 | void | |
1646 | ofproto_get_memory_usage(const struct ofproto *ofproto, struct simap *usage) | |
1647 | { | |
1648 | const struct oftable *table; | |
1649 | unsigned int n_rules; | |
1650 | ||
1651 | simap_increase(usage, "ports", hmap_count(&ofproto->ports)); | |
15aaf599 | 1652 | |
0d085684 BP |
1653 | n_rules = 0; |
1654 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
1655 | n_rules += classifier_count(&table->cls); | |
1656 | } | |
1657 | simap_increase(usage, "rules", n_rules); | |
1658 | ||
1659 | if (ofproto->ofproto_class->get_memory_usage) { | |
1660 | ofproto->ofproto_class->get_memory_usage(ofproto, usage); | |
1661 | } | |
1662 | ||
1663 | connmgr_get_memory_usage(ofproto->connmgr, usage); | |
1664 | } | |
1665 | ||
1c030aa5 EJ |
1666 | void |
1667 | ofproto_type_get_memory_usage(const char *datapath_type, struct simap *usage) | |
1668 | { | |
1669 | const struct ofproto_class *class; | |
1670 | ||
1671 | datapath_type = ofproto_normalize_type(datapath_type); | |
1672 | class = ofproto_class_find__(datapath_type); | |
1673 | ||
1674 | if (class && class->type_get_memory_usage) { | |
1675 | class->type_get_memory_usage(datapath_type, usage); | |
1676 | } | |
1677 | } | |
1678 | ||
bffc0589 | 1679 | void |
2cdcb898 | 1680 | ofproto_get_ofproto_controller_info(const struct ofproto *ofproto, |
bffc0589 AE |
1681 | struct shash *info) |
1682 | { | |
19a87e36 | 1683 | connmgr_get_controller_info(ofproto->connmgr, info); |
bffc0589 AE |
1684 | } |
1685 | ||
1686 | void | |
1687 | ofproto_free_ofproto_controller_info(struct shash *info) | |
1688 | { | |
72ba2ed3 | 1689 | connmgr_free_controller_info(info); |
bffc0589 AE |
1690 | } |
1691 | ||
b5827b24 BP |
1692 | /* Makes a deep copy of 'old' into 'port'. */ |
1693 | void | |
1694 | ofproto_port_clone(struct ofproto_port *port, const struct ofproto_port *old) | |
1695 | { | |
1696 | port->name = xstrdup(old->name); | |
1697 | port->type = xstrdup(old->type); | |
1698 | port->ofp_port = old->ofp_port; | |
1699 | } | |
1700 | ||
1701 | /* Frees memory allocated to members of 'ofproto_port'. | |
3a6ccc8c | 1702 | * |
b5827b24 BP |
1703 | * Do not call this function on an ofproto_port obtained from |
1704 | * ofproto_port_dump_next(): that function retains ownership of the data in the | |
1705 | * ofproto_port. */ | |
1706 | void | |
1707 | ofproto_port_destroy(struct ofproto_port *ofproto_port) | |
1708 | { | |
1709 | free(ofproto_port->name); | |
1710 | free(ofproto_port->type); | |
1711 | } | |
1712 | ||
b5827b24 | 1713 | /* Initializes 'dump' to begin dumping the ports in an ofproto. |
3a6ccc8c | 1714 | * |
b5827b24 BP |
1715 | * This function provides no status indication. An error status for the entire |
1716 | * dump operation is provided when it is completed by calling | |
1717 | * ofproto_port_dump_done(). | |
1718 | */ | |
1719 | void | |
1720 | ofproto_port_dump_start(struct ofproto_port_dump *dump, | |
1721 | const struct ofproto *ofproto) | |
1722 | { | |
abe529af BP |
1723 | dump->ofproto = ofproto; |
1724 | dump->error = ofproto->ofproto_class->port_dump_start(ofproto, | |
1725 | &dump->state); | |
b5827b24 BP |
1726 | } |
1727 | ||
1728 | /* Attempts to retrieve another port from 'dump', which must have been created | |
1729 | * with ofproto_port_dump_start(). On success, stores a new ofproto_port into | |
1730 | * 'port' and returns true. On failure, returns false. | |
1731 | * | |
1732 | * Failure might indicate an actual error or merely that the last port has been | |
1733 | * dumped. An error status for the entire dump operation is provided when it | |
1734 | * is completed by calling ofproto_port_dump_done(). | |
1735 | * | |
1736 | * The ofproto owns the data stored in 'port'. It will remain valid until at | |
1737 | * least the next time 'dump' is passed to ofproto_port_dump_next() or | |
1738 | * ofproto_port_dump_done(). */ | |
1739 | bool | |
1740 | ofproto_port_dump_next(struct ofproto_port_dump *dump, | |
1741 | struct ofproto_port *port) | |
1742 | { | |
abe529af BP |
1743 | const struct ofproto *ofproto = dump->ofproto; |
1744 | ||
1745 | if (dump->error) { | |
1746 | return false; | |
1747 | } | |
b5827b24 | 1748 | |
abe529af BP |
1749 | dump->error = ofproto->ofproto_class->port_dump_next(ofproto, dump->state, |
1750 | port); | |
1751 | if (dump->error) { | |
1752 | ofproto->ofproto_class->port_dump_done(ofproto, dump->state); | |
1753 | return false; | |
b5827b24 | 1754 | } |
abe529af | 1755 | return true; |
b5827b24 BP |
1756 | } |
1757 | ||
1758 | /* Completes port table dump operation 'dump', which must have been created | |
1759 | * with ofproto_port_dump_start(). Returns 0 if the dump operation was | |
1760 | * error-free, otherwise a positive errno value describing the problem. */ | |
3a6ccc8c | 1761 | int |
b5827b24 | 1762 | ofproto_port_dump_done(struct ofproto_port_dump *dump) |
3a6ccc8c | 1763 | { |
abe529af BP |
1764 | const struct ofproto *ofproto = dump->ofproto; |
1765 | if (!dump->error) { | |
1766 | dump->error = ofproto->ofproto_class->port_dump_done(ofproto, | |
1767 | dump->state); | |
1768 | } | |
1769 | return dump->error == EOF ? 0 : dump->error; | |
b5827b24 BP |
1770 | } |
1771 | ||
0aeaabc8 JP |
1772 | /* Returns the type to pass to netdev_open() when a datapath of type |
1773 | * 'datapath_type' has a port of type 'port_type', for a few special | |
1774 | * cases when a netdev type differs from a port type. For example, when | |
1775 | * using the userspace datapath, a port of type "internal" needs to be | |
1776 | * opened as "tap". | |
1777 | * | |
1778 | * Returns either 'type' itself or a string literal, which must not be | |
1779 | * freed. */ | |
1780 | const char * | |
1781 | ofproto_port_open_type(const char *datapath_type, const char *port_type) | |
1782 | { | |
1783 | const struct ofproto_class *class; | |
1784 | ||
1785 | datapath_type = ofproto_normalize_type(datapath_type); | |
1786 | class = ofproto_class_find__(datapath_type); | |
1787 | if (!class) { | |
1788 | return port_type; | |
1789 | } | |
1790 | ||
1791 | return (class->port_open_type | |
1792 | ? class->port_open_type(datapath_type, port_type) | |
1793 | : port_type); | |
1794 | } | |
1795 | ||
81816a5f JP |
1796 | /* Attempts to add 'netdev' as a port on 'ofproto'. If 'ofp_portp' is |
1797 | * non-null and '*ofp_portp' is not OFPP_NONE, attempts to use that as | |
1798 | * the port's OpenFlow port number. | |
1799 | * | |
1800 | * If successful, returns 0 and sets '*ofp_portp' to the new port's | |
1801 | * OpenFlow port number (if 'ofp_portp' is non-null). On failure, | |
1802 | * returns a positive errno value and sets '*ofp_portp' to OFPP_NONE (if | |
1803 | * 'ofp_portp' is non-null). */ | |
b5827b24 BP |
1804 | int |
1805 | ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev, | |
4e022ec0 | 1806 | ofp_port_t *ofp_portp) |
b5827b24 | 1807 | { |
4e022ec0 | 1808 | ofp_port_t ofp_port = ofp_portp ? *ofp_portp : OFPP_NONE; |
3a6ccc8c BP |
1809 | int error; |
1810 | ||
e1b1d06a | 1811 | error = ofproto->ofproto_class->port_add(ofproto, netdev); |
1fa24dea | 1812 | if (!error) { |
e1b1d06a JP |
1813 | const char *netdev_name = netdev_get_name(netdev); |
1814 | ||
4e022ec0 AW |
1815 | simap_put(&ofproto->ofp_requests, netdev_name, |
1816 | ofp_to_u16(ofp_port)); | |
e1b1d06a | 1817 | update_port(ofproto, netdev_name); |
1fa24dea | 1818 | } |
b5827b24 | 1819 | if (ofp_portp) { |
17f69db5 BP |
1820 | *ofp_portp = OFPP_NONE; |
1821 | if (!error) { | |
1822 | struct ofproto_port ofproto_port; | |
1823 | ||
1824 | error = ofproto_port_query_by_name(ofproto, | |
1825 | netdev_get_name(netdev), | |
1826 | &ofproto_port); | |
1827 | if (!error) { | |
1828 | *ofp_portp = ofproto_port.ofp_port; | |
1829 | ofproto_port_destroy(&ofproto_port); | |
1830 | } | |
1831 | } | |
3a6ccc8c BP |
1832 | } |
1833 | return error; | |
1834 | } | |
1835 | ||
b5827b24 BP |
1836 | /* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and |
1837 | * initializes '*port' appropriately; on failure, returns a positive errno | |
1838 | * value. | |
1839 | * | |
abe529af | 1840 | * The caller owns the data in 'ofproto_port' and must free it with |
b5827b24 BP |
1841 | * ofproto_port_destroy() when it is no longer needed. */ |
1842 | int | |
1843 | ofproto_port_query_by_name(const struct ofproto *ofproto, const char *devname, | |
1844 | struct ofproto_port *port) | |
a4e2e1f2 | 1845 | { |
b5827b24 BP |
1846 | int error; |
1847 | ||
abe529af BP |
1848 | error = ofproto->ofproto_class->port_query_by_name(ofproto, devname, port); |
1849 | if (error) { | |
1850 | memset(port, 0, sizeof *port); | |
b5827b24 BP |
1851 | } |
1852 | return error; | |
a4e2e1f2 EJ |
1853 | } |
1854 | ||
b5827b24 | 1855 | /* Deletes port number 'ofp_port' from the datapath for 'ofproto'. |
3a6ccc8c | 1856 | * Returns 0 if successful, otherwise a positive errno. */ |
064af421 | 1857 | int |
4e022ec0 | 1858 | ofproto_port_del(struct ofproto *ofproto, ofp_port_t ofp_port) |
064af421 | 1859 | { |
abe529af | 1860 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1264ec95 | 1861 | const char *name = ofport ? netdev_get_name(ofport->netdev) : "<unknown>"; |
e1b1d06a | 1862 | struct simap_node *ofp_request_node; |
3cf10406 | 1863 | int error; |
cdee00fd | 1864 | |
e1b1d06a JP |
1865 | ofp_request_node = simap_find(&ofproto->ofp_requests, name); |
1866 | if (ofp_request_node) { | |
1867 | simap_delete(&ofproto->ofp_requests, ofp_request_node); | |
1868 | } | |
1869 | ||
abe529af | 1870 | error = ofproto->ofproto_class->port_del(ofproto, ofp_port); |
892815f5 | 1871 | if (!error && ofport) { |
1264ec95 BP |
1872 | /* 'name' is the netdev's name and update_port() is going to close the |
1873 | * netdev. Just in case update_port() refers to 'name' after it | |
3a6ccc8c BP |
1874 | * destroys 'ofport', make a copy of it around the update_port() |
1875 | * call. */ | |
1876 | char *devname = xstrdup(name); | |
1877 | update_port(ofproto, devname); | |
1878 | free(devname); | |
3cf10406 BP |
1879 | } |
1880 | return error; | |
064af421 BP |
1881 | } |
1882 | ||
276f6518 SH |
1883 | static void |
1884 | flow_mod_init(struct ofputil_flow_mod *fm, | |
1885 | const struct match *match, unsigned int priority, | |
1886 | const struct ofpact *ofpacts, size_t ofpacts_len, | |
1887 | enum ofp_flow_mod_command command) | |
1888 | { | |
1889 | memset(fm, 0, sizeof *fm); | |
1890 | fm->match = *match; | |
1891 | fm->priority = priority; | |
1892 | fm->cookie = 0; | |
1893 | fm->new_cookie = 0; | |
1894 | fm->modify_cookie = false; | |
1895 | fm->table_id = 0; | |
1896 | fm->command = command; | |
1897 | fm->idle_timeout = 0; | |
1898 | fm->hard_timeout = 0; | |
1899 | fm->buffer_id = UINT32_MAX; | |
1900 | fm->out_port = OFPP_ANY; | |
1901 | fm->out_group = OFPG_ANY; | |
1902 | fm->flags = 0; | |
1903 | fm->ofpacts = CONST_CAST(struct ofpact *, ofpacts); | |
1904 | fm->ofpacts_len = ofpacts_len; | |
cc40d06b | 1905 | fm->delete_reason = OFPRR_DELETE; |
276f6518 SH |
1906 | } |
1907 | ||
97f63e57 BP |
1908 | static int |
1909 | simple_flow_mod(struct ofproto *ofproto, | |
1910 | const struct match *match, unsigned int priority, | |
1911 | const struct ofpact *ofpacts, size_t ofpacts_len, | |
1912 | enum ofp_flow_mod_command command) | |
1913 | { | |
1914 | struct ofputil_flow_mod fm; | |
1915 | ||
276f6518 | 1916 | flow_mod_init(&fm, match, priority, ofpacts, ofpacts_len, command); |
15aaf599 | 1917 | |
baae3d02 | 1918 | return handle_flow_mod__(ofproto, &fm, NULL); |
97f63e57 BP |
1919 | } |
1920 | ||
6c1491fb | 1921 | /* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and |
fa8b054f BP |
1922 | * performs the 'n_actions' actions in 'actions'. The new flow will not |
1923 | * timeout. | |
1924 | * | |
1925 | * If cls_rule->priority is in the range of priorities supported by OpenFlow | |
1926 | * (0...65535, inclusive) then the flow will be visible to OpenFlow | |
1927 | * controllers; otherwise, it will be hidden. | |
1928 | * | |
f25d0cf3 | 1929 | * The caller retains ownership of 'cls_rule' and 'ofpacts'. |
6c1491fb BP |
1930 | * |
1931 | * This is a helper function for in-band control and fail-open. */ | |
064af421 | 1932 | void |
81a76618 BP |
1933 | ofproto_add_flow(struct ofproto *ofproto, const struct match *match, |
1934 | unsigned int priority, | |
f25d0cf3 | 1935 | const struct ofpact *ofpacts, size_t ofpacts_len) |
15aaf599 | 1936 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 1937 | { |
7ee20df1 | 1938 | const struct rule *rule; |
6f00e29b | 1939 | bool must_add; |
7ee20df1 | 1940 | |
97f63e57 BP |
1941 | /* First do a cheap check whether the rule we're looking for already exists |
1942 | * with the actions that we want. If it does, then we're done. */ | |
81a76618 BP |
1943 | rule = rule_from_cls_rule(classifier_find_match_exactly( |
1944 | &ofproto->tables[0].cls, match, priority)); | |
6f00e29b | 1945 | if (rule) { |
dc723c44 | 1946 | const struct rule_actions *actions = rule_get_actions(rule); |
06a0f3e2 | 1947 | must_add = !ofpacts_equal(actions->ofpacts, actions->ofpacts_len, |
6f00e29b | 1948 | ofpacts, ofpacts_len); |
6f00e29b BP |
1949 | } else { |
1950 | must_add = true; | |
1951 | } | |
97f63e57 BP |
1952 | |
1953 | /* If there's no such rule or the rule doesn't have the actions we want, | |
1954 | * fall back to a executing a full flow mod. We can't optimize this at | |
1955 | * all because we didn't take enough locks above to ensure that the flow | |
1956 | * table didn't already change beneath us. */ | |
6f00e29b | 1957 | if (must_add) { |
97f63e57 BP |
1958 | simple_flow_mod(ofproto, match, priority, ofpacts, ofpacts_len, |
1959 | OFPFC_MODIFY_STRICT); | |
7ee20df1 | 1960 | } |
064af421 BP |
1961 | } |
1962 | ||
75a75043 | 1963 | /* Executes the flow modification specified in 'fm'. Returns 0 on success, an |
90bf1e07 BP |
1964 | * OFPERR_* OpenFlow error code on failure, or OFPROTO_POSTPONE if the |
1965 | * operation cannot be initiated now but may be retried later. | |
75a75043 | 1966 | * |
1b63b91e BP |
1967 | * This is a helper function for in-band control and fail-open and the "learn" |
1968 | * action. */ | |
75a75043 | 1969 | int |
e3b56933 | 1970 | ofproto_flow_mod(struct ofproto *ofproto, struct ofputil_flow_mod *fm) |
15aaf599 | 1971 | OVS_EXCLUDED(ofproto_mutex) |
75a75043 | 1972 | { |
b90d6ee5 JR |
1973 | /* Optimize for the most common case of a repeated learn action. |
1974 | * If an identical flow already exists we only need to update its | |
1975 | * 'modified' time. */ | |
1976 | if (fm->command == OFPFC_MODIFY_STRICT && fm->table_id != OFPTT_ALL | |
1977 | && !(fm->flags & OFPUTIL_FF_RESET_COUNTS)) { | |
1978 | struct oftable *table = &ofproto->tables[fm->table_id]; | |
b90d6ee5 JR |
1979 | struct rule *rule; |
1980 | bool done = false; | |
1981 | ||
0ef165ec EJ |
1982 | rule = rule_from_cls_rule(classifier_find_match_exactly(&table->cls, |
1983 | &fm->match, | |
1984 | fm->priority)); | |
b90d6ee5 JR |
1985 | if (rule) { |
1986 | /* Reading many of the rule fields and writing on 'modified' | |
1987 | * requires the rule->mutex. Also, rule->actions may change | |
1988 | * if rule->mutex is not held. */ | |
06a0f3e2 BP |
1989 | const struct rule_actions *actions; |
1990 | ||
b90d6ee5 | 1991 | ovs_mutex_lock(&rule->mutex); |
06a0f3e2 | 1992 | actions = rule_get_actions(rule); |
b90d6ee5 JR |
1993 | if (rule->idle_timeout == fm->idle_timeout |
1994 | && rule->hard_timeout == fm->hard_timeout | |
1995 | && rule->flags == (fm->flags & OFPUTIL_FF_STATE) | |
1996 | && (!fm->modify_cookie || (fm->new_cookie == rule->flow_cookie)) | |
1997 | && ofpacts_equal(fm->ofpacts, fm->ofpacts_len, | |
06a0f3e2 | 1998 | actions->ofpacts, actions->ofpacts_len)) { |
b90d6ee5 JR |
1999 | /* Rule already exists and need not change, only update the |
2000 | modified timestamp. */ | |
2001 | rule->modified = time_msec(); | |
2002 | done = true; | |
2003 | } | |
2004 | ovs_mutex_unlock(&rule->mutex); | |
2005 | } | |
b90d6ee5 JR |
2006 | |
2007 | if (done) { | |
2008 | return 0; | |
2009 | } | |
2010 | } | |
2011 | ||
baae3d02 | 2012 | return handle_flow_mod__(ofproto, fm, NULL); |
75a75043 BP |
2013 | } |
2014 | ||
6c1491fb BP |
2015 | /* Searches for a rule with matching criteria exactly equal to 'target' in |
2016 | * ofproto's table 0 and, if it finds one, deletes it. | |
2017 | * | |
2018 | * This is a helper function for in-band control and fail-open. */ | |
b20f4073 | 2019 | void |
81a76618 BP |
2020 | ofproto_delete_flow(struct ofproto *ofproto, |
2021 | const struct match *target, unsigned int priority) | |
15aaf599 | 2022 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 2023 | { |
8037acb4 | 2024 | struct classifier *cls = &ofproto->tables[0].cls; |
064af421 BP |
2025 | struct rule *rule; |
2026 | ||
97f63e57 BP |
2027 | /* First do a cheap check whether the rule we're looking for has already |
2028 | * been deleted. If so, then we're done. */ | |
8037acb4 BP |
2029 | rule = rule_from_cls_rule(classifier_find_match_exactly(cls, target, |
2030 | priority)); | |
834fe5cb BP |
2031 | if (!rule) { |
2032 | return; | |
bcf84111 | 2033 | } |
834fe5cb BP |
2034 | |
2035 | /* Execute a flow mod. We can't optimize this at all because we didn't | |
2036 | * take enough locks above to ensure that the flow table didn't already | |
2037 | * change beneath us. */ | |
2038 | simple_flow_mod(ofproto, target, priority, NULL, 0, OFPFC_DELETE_STRICT); | |
142e1f5c BP |
2039 | } |
2040 | ||
834fe5cb BP |
2041 | /* Delete all of the flows from all of ofproto's flow tables, then reintroduce |
2042 | * the flows required by in-band control and fail-open. */ | |
142e1f5c BP |
2043 | void |
2044 | ofproto_flush_flows(struct ofproto *ofproto) | |
2045 | { | |
7ee20df1 | 2046 | COVERAGE_INC(ofproto_flush); |
834fe5cb BP |
2047 | ofproto_flush__(ofproto); |
2048 | connmgr_flushed(ofproto->connmgr); | |
064af421 BP |
2049 | } |
2050 | \f | |
2051 | static void | |
2052 | reinit_ports(struct ofproto *p) | |
2053 | { | |
abe529af | 2054 | struct ofproto_port_dump dump; |
b3c01ed3 | 2055 | struct sset devnames; |
064af421 | 2056 | struct ofport *ofport; |
abe529af | 2057 | struct ofproto_port ofproto_port; |
b3c01ed3 | 2058 | const char *devname; |
064af421 | 2059 | |
898bf89d JP |
2060 | COVERAGE_INC(ofproto_reinit_ports); |
2061 | ||
b3c01ed3 | 2062 | sset_init(&devnames); |
4e8e4213 | 2063 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { |
1264ec95 | 2064 | sset_add(&devnames, netdev_get_name(ofport->netdev)); |
064af421 | 2065 | } |
abe529af BP |
2066 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { |
2067 | sset_add(&devnames, ofproto_port.name); | |
064af421 | 2068 | } |
064af421 | 2069 | |
b3c01ed3 BP |
2070 | SSET_FOR_EACH (devname, &devnames) { |
2071 | update_port(p, devname); | |
064af421 | 2072 | } |
b3c01ed3 | 2073 | sset_destroy(&devnames); |
064af421 BP |
2074 | } |
2075 | ||
4e022ec0 | 2076 | static ofp_port_t |
e1b1d06a JP |
2077 | alloc_ofp_port(struct ofproto *ofproto, const char *netdev_name) |
2078 | { | |
4e022ec0 | 2079 | uint16_t port_idx; |
e1b1d06a | 2080 | |
4e022ec0 | 2081 | port_idx = simap_get(&ofproto->ofp_requests, netdev_name); |
430dbb14 | 2082 | port_idx = port_idx ? port_idx : UINT16_MAX; |
4e022ec0 | 2083 | |
430dbb14 | 2084 | if (port_idx >= ofproto->max_ports |
fdcea803 GS |
2085 | || ofport_get_usage(ofproto, u16_to_ofp(port_idx)) == LLONG_MAX) { |
2086 | uint16_t lru_ofport = 0, end_port_no = ofproto->alloc_port_no; | |
2087 | long long int last_used_at, lru = LLONG_MAX; | |
e1b1d06a | 2088 | |
e1b1d06a JP |
2089 | /* Search for a free OpenFlow port number. We try not to |
2090 | * immediately reuse them to prevent problems due to old | |
484c8355 BP |
2091 | * flows. |
2092 | * | |
2093 | * We limit the automatically assigned port numbers to the lower half | |
2094 | * of the port range, to reserve the upper half for assignment by | |
2095 | * controllers. */ | |
6033d9d9 | 2096 | for (;;) { |
484c8355 | 2097 | if (++ofproto->alloc_port_no >= MIN(ofproto->max_ports, 32768)) { |
fdcea803 | 2098 | ofproto->alloc_port_no = 1; |
6033d9d9 | 2099 | } |
fdcea803 GS |
2100 | last_used_at = ofport_get_usage(ofproto, |
2101 | u16_to_ofp(ofproto->alloc_port_no)); | |
2102 | if (!last_used_at) { | |
430dbb14 | 2103 | port_idx = ofproto->alloc_port_no; |
6033d9d9 | 2104 | break; |
865b26a4 GS |
2105 | } else if ( last_used_at < time_msec() - 60*60*1000) { |
2106 | /* If the port with ofport 'ofproto->alloc_port_no' was deleted | |
2107 | * more than an hour ago, consider it usable. */ | |
2108 | ofport_remove_usage(ofproto, | |
2109 | u16_to_ofp(ofproto->alloc_port_no)); | |
2110 | port_idx = ofproto->alloc_port_no; | |
2111 | break; | |
fdcea803 GS |
2112 | } else if (last_used_at < lru) { |
2113 | lru = last_used_at; | |
2114 | lru_ofport = ofproto->alloc_port_no; | |
e1b1d06a | 2115 | } |
fdcea803 | 2116 | |
430dbb14 | 2117 | if (ofproto->alloc_port_no == end_port_no) { |
fdcea803 GS |
2118 | if (lru_ofport) { |
2119 | port_idx = lru_ofport; | |
2120 | break; | |
2121 | } | |
6033d9d9 | 2122 | return OFPP_NONE; |
e1b1d06a JP |
2123 | } |
2124 | } | |
2125 | } | |
fdcea803 | 2126 | ofport_set_usage(ofproto, u16_to_ofp(port_idx), LLONG_MAX); |
4e022ec0 | 2127 | return u16_to_ofp(port_idx); |
e1b1d06a JP |
2128 | } |
2129 | ||
2130 | static void | |
fdcea803 | 2131 | dealloc_ofp_port(struct ofproto *ofproto, ofp_port_t ofp_port) |
e1b1d06a | 2132 | { |
430dbb14 | 2133 | if (ofp_to_u16(ofp_port) < ofproto->max_ports) { |
fdcea803 | 2134 | ofport_set_usage(ofproto, ofp_port, time_msec()); |
40fa9417 | 2135 | } |
e1b1d06a JP |
2136 | } |
2137 | ||
fbfa2911 BP |
2138 | /* Opens and returns a netdev for 'ofproto_port' in 'ofproto', or a null |
2139 | * pointer if the netdev cannot be opened. On success, also fills in | |
d7d92203 | 2140 | * '*pp'. */ |
b33951b8 | 2141 | static struct netdev * |
e1b1d06a JP |
2142 | ofport_open(struct ofproto *ofproto, |
2143 | struct ofproto_port *ofproto_port, | |
9e1fd49b | 2144 | struct ofputil_phy_port *pp) |
064af421 BP |
2145 | { |
2146 | enum netdev_flags flags; | |
064af421 | 2147 | struct netdev *netdev; |
064af421 BP |
2148 | int error; |
2149 | ||
18812dff | 2150 | error = netdev_open(ofproto_port->name, ofproto_port->type, &netdev); |
064af421 | 2151 | if (error) { |
fbfa2911 | 2152 | VLOG_WARN_RL(&rl, "%s: ignoring port %s (%"PRIu16") because netdev %s " |
064af421 | 2153 | "cannot be opened (%s)", |
fbfa2911 | 2154 | ofproto->name, |
abe529af | 2155 | ofproto_port->name, ofproto_port->ofp_port, |
10a89ef0 | 2156 | ofproto_port->name, ovs_strerror(error)); |
064af421 BP |
2157 | return NULL; |
2158 | } | |
2159 | ||
e1b1d06a JP |
2160 | if (ofproto_port->ofp_port == OFPP_NONE) { |
2161 | if (!strcmp(ofproto->name, ofproto_port->name)) { | |
2162 | ofproto_port->ofp_port = OFPP_LOCAL; | |
2163 | } else { | |
2164 | ofproto_port->ofp_port = alloc_ofp_port(ofproto, | |
2165 | ofproto_port->name); | |
2166 | } | |
2167 | } | |
9e1fd49b BP |
2168 | pp->port_no = ofproto_port->ofp_port; |
2169 | netdev_get_etheraddr(netdev, pp->hw_addr); | |
2170 | ovs_strlcpy(pp->name, ofproto_port->name, sizeof pp->name); | |
064af421 | 2171 | netdev_get_flags(netdev, &flags); |
9e1fd49b BP |
2172 | pp->config = flags & NETDEV_UP ? 0 : OFPUTIL_PC_PORT_DOWN; |
2173 | pp->state = netdev_get_carrier(netdev) ? 0 : OFPUTIL_PS_LINK_DOWN; | |
2174 | netdev_get_features(netdev, &pp->curr, &pp->advertised, | |
2175 | &pp->supported, &pp->peer); | |
cd65125d BP |
2176 | pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000; |
2177 | pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000; | |
118c4676 | 2178 | |
b33951b8 | 2179 | return netdev; |
064af421 BP |
2180 | } |
2181 | ||
b33951b8 | 2182 | /* Returns true if most fields of 'a' and 'b' are equal. Differences in name, |
d7d92203 | 2183 | * port number, and 'config' bits other than OFPUTIL_PC_PORT_DOWN are |
b33951b8 BP |
2184 | * disregarded. */ |
2185 | static bool | |
9e1fd49b BP |
2186 | ofport_equal(const struct ofputil_phy_port *a, |
2187 | const struct ofputil_phy_port *b) | |
064af421 | 2188 | { |
9e1fd49b | 2189 | return (eth_addr_equals(a->hw_addr, b->hw_addr) |
064af421 | 2190 | && a->state == b->state |
9e1fd49b | 2191 | && !((a->config ^ b->config) & OFPUTIL_PC_PORT_DOWN) |
064af421 BP |
2192 | && a->curr == b->curr |
2193 | && a->advertised == b->advertised | |
2194 | && a->supported == b->supported | |
9e1fd49b BP |
2195 | && a->peer == b->peer |
2196 | && a->curr_speed == b->curr_speed | |
2197 | && a->max_speed == b->max_speed); | |
064af421 BP |
2198 | } |
2199 | ||
b33951b8 BP |
2200 | /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'. |
2201 | * The caller must ensure that 'p' does not have a conflicting ofport (that is, | |
2202 | * one with the same name or port number). */ | |
064af421 | 2203 | static void |
b33951b8 | 2204 | ofport_install(struct ofproto *p, |
9e1fd49b | 2205 | struct netdev *netdev, const struct ofputil_phy_port *pp) |
064af421 | 2206 | { |
b33951b8 BP |
2207 | const char *netdev_name = netdev_get_name(netdev); |
2208 | struct ofport *ofport; | |
abe529af | 2209 | int error; |
72b06300 | 2210 | |
b33951b8 | 2211 | /* Create ofport. */ |
abe529af BP |
2212 | ofport = p->ofproto_class->port_alloc(); |
2213 | if (!ofport) { | |
2214 | error = ENOMEM; | |
2215 | goto error; | |
2216 | } | |
0f7d71a5 | 2217 | ofport->ofproto = p; |
b33951b8 | 2218 | ofport->netdev = netdev; |
61501798 | 2219 | ofport->change_seq = netdev_get_change_seq(netdev); |
9e1fd49b BP |
2220 | ofport->pp = *pp; |
2221 | ofport->ofp_port = pp->port_no; | |
65e0be10 | 2222 | ofport->created = time_msec(); |
b33951b8 BP |
2223 | |
2224 | /* Add port to 'p'. */ | |
4e022ec0 | 2225 | hmap_insert(&p->ports, &ofport->hmap_node, |
f9c0c3ec | 2226 | hash_ofp_port(ofport->ofp_port)); |
72b06300 | 2227 | shash_add(&p->port_by_name, netdev_name, ofport); |
abe529af | 2228 | |
ada3428f | 2229 | update_mtu(p, ofport); |
9197df76 | 2230 | |
abe529af BP |
2231 | /* Let the ofproto_class initialize its private data. */ |
2232 | error = p->ofproto_class->port_construct(ofport); | |
2233 | if (error) { | |
2234 | goto error; | |
2235 | } | |
2a6f78e0 | 2236 | connmgr_send_port_status(p->connmgr, NULL, pp, OFPPR_ADD); |
abe529af BP |
2237 | return; |
2238 | ||
2239 | error: | |
2240 | VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)", | |
10a89ef0 | 2241 | p->name, netdev_name, ovs_strerror(error)); |
abe529af BP |
2242 | if (ofport) { |
2243 | ofport_destroy__(ofport); | |
2244 | } else { | |
2245 | netdev_close(netdev); | |
72b06300 | 2246 | } |
064af421 BP |
2247 | } |
2248 | ||
b33951b8 | 2249 | /* Removes 'ofport' from 'p' and destroys it. */ |
064af421 | 2250 | static void |
0f7d71a5 | 2251 | ofport_remove(struct ofport *ofport) |
064af421 | 2252 | { |
2a6f78e0 | 2253 | connmgr_send_port_status(ofport->ofproto->connmgr, NULL, &ofport->pp, |
fa066f01 | 2254 | OFPPR_DELETE); |
abe529af | 2255 | ofport_destroy(ofport); |
b33951b8 BP |
2256 | } |
2257 | ||
2258 | /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and | |
2259 | * destroys it. */ | |
2260 | static void | |
2261 | ofport_remove_with_name(struct ofproto *ofproto, const char *name) | |
2262 | { | |
2263 | struct ofport *port = shash_find_data(&ofproto->port_by_name, name); | |
2264 | if (port) { | |
0f7d71a5 | 2265 | ofport_remove(port); |
b33951b8 BP |
2266 | } |
2267 | } | |
2268 | ||
9e1fd49b | 2269 | /* Updates 'port' with new 'pp' description. |
b33951b8 BP |
2270 | * |
2271 | * Does not handle a name or port number change. The caller must implement | |
2272 | * such a change as a delete followed by an add. */ | |
2273 | static void | |
9e1fd49b | 2274 | ofport_modified(struct ofport *port, struct ofputil_phy_port *pp) |
b33951b8 | 2275 | { |
9e1fd49b BP |
2276 | memcpy(port->pp.hw_addr, pp->hw_addr, ETH_ADDR_LEN); |
2277 | port->pp.config = ((port->pp.config & ~OFPUTIL_PC_PORT_DOWN) | |
2278 | | (pp->config & OFPUTIL_PC_PORT_DOWN)); | |
53fd5c7c BP |
2279 | port->pp.state = ((port->pp.state & ~OFPUTIL_PS_LINK_DOWN) |
2280 | | (pp->state & OFPUTIL_PS_LINK_DOWN)); | |
9e1fd49b BP |
2281 | port->pp.curr = pp->curr; |
2282 | port->pp.advertised = pp->advertised; | |
2283 | port->pp.supported = pp->supported; | |
2284 | port->pp.peer = pp->peer; | |
2285 | port->pp.curr_speed = pp->curr_speed; | |
2286 | port->pp.max_speed = pp->max_speed; | |
b33951b8 | 2287 | |
2a6f78e0 BP |
2288 | connmgr_send_port_status(port->ofproto->connmgr, NULL, |
2289 | &port->pp, OFPPR_MODIFY); | |
064af421 BP |
2290 | } |
2291 | ||
5a2dfd47 JP |
2292 | /* Update OpenFlow 'state' in 'port' and notify controller. */ |
2293 | void | |
9e1fd49b | 2294 | ofproto_port_set_state(struct ofport *port, enum ofputil_port_state state) |
5a2dfd47 | 2295 | { |
9e1fd49b BP |
2296 | if (port->pp.state != state) { |
2297 | port->pp.state = state; | |
2a6f78e0 BP |
2298 | connmgr_send_port_status(port->ofproto->connmgr, NULL, |
2299 | &port->pp, OFPPR_MODIFY); | |
5a2dfd47 JP |
2300 | } |
2301 | } | |
2302 | ||
abe529af | 2303 | void |
4e022ec0 | 2304 | ofproto_port_unregister(struct ofproto *ofproto, ofp_port_t ofp_port) |
e7934396 | 2305 | { |
abe529af BP |
2306 | struct ofport *port = ofproto_get_port(ofproto, ofp_port); |
2307 | if (port) { | |
52a90c29 BP |
2308 | if (port->ofproto->ofproto_class->set_realdev) { |
2309 | port->ofproto->ofproto_class->set_realdev(port, 0, 0); | |
2310 | } | |
b308140a JP |
2311 | if (port->ofproto->ofproto_class->set_stp_port) { |
2312 | port->ofproto->ofproto_class->set_stp_port(port, NULL); | |
2313 | } | |
9efd308e DV |
2314 | if (port->ofproto->ofproto_class->set_rstp_port) { |
2315 | port->ofproto->ofproto_class->set_rstp_port(port, NULL); | |
2316 | } | |
abe529af | 2317 | if (port->ofproto->ofproto_class->set_cfm) { |
a5610457 | 2318 | port->ofproto->ofproto_class->set_cfm(port, NULL); |
abe529af BP |
2319 | } |
2320 | if (port->ofproto->ofproto_class->bundle_remove) { | |
2321 | port->ofproto->ofproto_class->bundle_remove(port); | |
e7934396 BP |
2322 | } |
2323 | } | |
2324 | } | |
2325 | ||
2326 | static void | |
abe529af | 2327 | ofport_destroy__(struct ofport *port) |
e7934396 | 2328 | { |
abe529af BP |
2329 | struct ofproto *ofproto = port->ofproto; |
2330 | const char *name = netdev_get_name(port->netdev); | |
fa066f01 | 2331 | |
abe529af BP |
2332 | hmap_remove(&ofproto->ports, &port->hmap_node); |
2333 | shash_delete(&ofproto->port_by_name, | |
2334 | shash_find(&ofproto->port_by_name, name)); | |
fa066f01 | 2335 | |
abe529af BP |
2336 | netdev_close(port->netdev); |
2337 | ofproto->ofproto_class->port_dealloc(port); | |
e7934396 BP |
2338 | } |
2339 | ||
064af421 | 2340 | static void |
abe529af | 2341 | ofport_destroy(struct ofport *port) |
064af421 | 2342 | { |
fa066f01 | 2343 | if (port) { |
e1b1d06a | 2344 | dealloc_ofp_port(port->ofproto, port->ofp_port); |
abe529af BP |
2345 | port->ofproto->ofproto_class->port_destruct(port); |
2346 | ofport_destroy__(port); | |
2347 | } | |
064af421 BP |
2348 | } |
2349 | ||
abe529af | 2350 | struct ofport * |
4e022ec0 | 2351 | ofproto_get_port(const struct ofproto *ofproto, ofp_port_t ofp_port) |
ca0f572c BP |
2352 | { |
2353 | struct ofport *port; | |
2354 | ||
f9c0c3ec | 2355 | HMAP_FOR_EACH_IN_BUCKET (port, hmap_node, hash_ofp_port(ofp_port), |
4e022ec0 | 2356 | &ofproto->ports) { |
abe529af | 2357 | if (port->ofp_port == ofp_port) { |
ca0f572c BP |
2358 | return port; |
2359 | } | |
2360 | } | |
2361 | return NULL; | |
2362 | } | |
2363 | ||
fdcea803 GS |
2364 | static long long int |
2365 | ofport_get_usage(const struct ofproto *ofproto, ofp_port_t ofp_port) | |
2366 | { | |
2367 | struct ofport_usage *usage; | |
2368 | ||
2369 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2370 | &ofproto->ofport_usage) { | |
2371 | if (usage->ofp_port == ofp_port) { | |
2372 | return usage->last_used; | |
2373 | } | |
2374 | } | |
2375 | return 0; | |
2376 | } | |
2377 | ||
2378 | static void | |
2379 | ofport_set_usage(struct ofproto *ofproto, ofp_port_t ofp_port, | |
2380 | long long int last_used) | |
2381 | { | |
2382 | struct ofport_usage *usage; | |
2383 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2384 | &ofproto->ofport_usage) { | |
2385 | if (usage->ofp_port == ofp_port) { | |
2386 | usage->last_used = last_used; | |
2387 | return; | |
2388 | } | |
2389 | } | |
2390 | ovs_assert(last_used == LLONG_MAX); | |
2391 | ||
2392 | usage = xmalloc(sizeof *usage); | |
2393 | usage->ofp_port = ofp_port; | |
2394 | usage->last_used = last_used; | |
2395 | hmap_insert(&ofproto->ofport_usage, &usage->hmap_node, | |
2396 | hash_ofp_port(ofp_port)); | |
2397 | } | |
2398 | ||
865b26a4 GS |
2399 | static void |
2400 | ofport_remove_usage(struct ofproto *ofproto, ofp_port_t ofp_port) | |
2401 | { | |
2402 | struct ofport_usage *usage; | |
2403 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2404 | &ofproto->ofport_usage) { | |
2405 | if (usage->ofp_port == ofp_port) { | |
2406 | hmap_remove(&ofproto->ofport_usage, &usage->hmap_node); | |
2407 | free(usage); | |
2408 | break; | |
2409 | } | |
2410 | } | |
2411 | } | |
2412 | ||
6527c598 PS |
2413 | int |
2414 | ofproto_port_get_stats(const struct ofport *port, struct netdev_stats *stats) | |
2415 | { | |
2416 | struct ofproto *ofproto = port->ofproto; | |
2417 | int error; | |
2418 | ||
2419 | if (ofproto->ofproto_class->port_get_stats) { | |
2420 | error = ofproto->ofproto_class->port_get_stats(port, stats); | |
2421 | } else { | |
2422 | error = EOPNOTSUPP; | |
2423 | } | |
2424 | ||
2425 | return error; | |
2426 | } | |
2427 | ||
064af421 | 2428 | static void |
b33951b8 | 2429 | update_port(struct ofproto *ofproto, const char *name) |
064af421 | 2430 | { |
abe529af | 2431 | struct ofproto_port ofproto_port; |
9e1fd49b | 2432 | struct ofputil_phy_port pp; |
b33951b8 BP |
2433 | struct netdev *netdev; |
2434 | struct ofport *port; | |
064af421 BP |
2435 | |
2436 | COVERAGE_INC(ofproto_update_port); | |
c874dc6d | 2437 | |
b33951b8 | 2438 | /* Fetch 'name''s location and properties from the datapath. */ |
abe529af | 2439 | netdev = (!ofproto_port_query_by_name(ofproto, name, &ofproto_port) |
fbfa2911 | 2440 | ? ofport_open(ofproto, &ofproto_port, &pp) |
b33951b8 | 2441 | : NULL); |
4e022ec0 | 2442 | |
b33951b8 | 2443 | if (netdev) { |
abe529af | 2444 | port = ofproto_get_port(ofproto, ofproto_port.ofp_port); |
b33951b8 | 2445 | if (port && !strcmp(netdev_get_name(port->netdev), name)) { |
e65942a0 BP |
2446 | struct netdev *old_netdev = port->netdev; |
2447 | ||
b33951b8 | 2448 | /* 'name' hasn't changed location. Any properties changed? */ |
9e1fd49b BP |
2449 | if (!ofport_equal(&port->pp, &pp)) { |
2450 | ofport_modified(port, &pp); | |
abe529af BP |
2451 | } |
2452 | ||
ada3428f | 2453 | update_mtu(ofproto, port); |
9197df76 | 2454 | |
e65942a0 BP |
2455 | /* Install the newly opened netdev in case it has changed. |
2456 | * Don't close the old netdev yet in case port_modified has to | |
2457 | * remove a retained reference to it.*/ | |
abe529af | 2458 | port->netdev = netdev; |
61501798 | 2459 | port->change_seq = netdev_get_change_seq(netdev); |
abe529af BP |
2460 | |
2461 | if (port->ofproto->ofproto_class->port_modified) { | |
2462 | port->ofproto->ofproto_class->port_modified(port); | |
b33951b8 | 2463 | } |
e65942a0 BP |
2464 | |
2465 | netdev_close(old_netdev); | |
b33951b8 BP |
2466 | } else { |
2467 | /* If 'port' is nonnull then its name differs from 'name' and thus | |
2468 | * we should delete it. If we think there's a port named 'name' | |
2469 | * then its port number must be wrong now so delete it too. */ | |
2470 | if (port) { | |
0f7d71a5 | 2471 | ofport_remove(port); |
b33951b8 BP |
2472 | } |
2473 | ofport_remove_with_name(ofproto, name); | |
9e1fd49b | 2474 | ofport_install(ofproto, netdev, &pp); |
c874dc6d | 2475 | } |
b33951b8 BP |
2476 | } else { |
2477 | /* Any port named 'name' is gone now. */ | |
2478 | ofport_remove_with_name(ofproto, name); | |
c874dc6d | 2479 | } |
abe529af | 2480 | ofproto_port_destroy(&ofproto_port); |
064af421 BP |
2481 | } |
2482 | ||
2483 | static int | |
2484 | init_ports(struct ofproto *p) | |
2485 | { | |
abe529af BP |
2486 | struct ofproto_port_dump dump; |
2487 | struct ofproto_port ofproto_port; | |
e1b1d06a | 2488 | struct shash_node *node, *next; |
abe529af BP |
2489 | |
2490 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { | |
e1b1d06a JP |
2491 | const char *name = ofproto_port.name; |
2492 | ||
2493 | if (shash_find(&p->port_by_name, name)) { | |
fbfa2911 | 2494 | VLOG_WARN_RL(&rl, "%s: ignoring duplicate device %s in datapath", |
e1b1d06a | 2495 | p->name, name); |
abe529af | 2496 | } else { |
9e1fd49b | 2497 | struct ofputil_phy_port pp; |
b33951b8 BP |
2498 | struct netdev *netdev; |
2499 | ||
e1b1d06a JP |
2500 | /* Check if an OpenFlow port number had been requested. */ |
2501 | node = shash_find(&init_ofp_ports, name); | |
2502 | if (node) { | |
2503 | const struct iface_hint *iface_hint = node->data; | |
4e022ec0 AW |
2504 | simap_put(&p->ofp_requests, name, |
2505 | ofp_to_u16(iface_hint->ofp_port)); | |
e1b1d06a JP |
2506 | } |
2507 | ||
fbfa2911 | 2508 | netdev = ofport_open(p, &ofproto_port, &pp); |
b33951b8 | 2509 | if (netdev) { |
9e1fd49b | 2510 | ofport_install(p, netdev, &pp); |
430dbb14 | 2511 | if (ofp_to_u16(ofproto_port.ofp_port) < p->max_ports) { |
7c35397c | 2512 | p->alloc_port_no = MAX(p->alloc_port_no, |
430dbb14 | 2513 | ofp_to_u16(ofproto_port.ofp_port)); |
7c35397c | 2514 | } |
064af421 BP |
2515 | } |
2516 | } | |
2517 | } | |
b0ec0f27 | 2518 | |
e1b1d06a | 2519 | SHASH_FOR_EACH_SAFE(node, next, &init_ofp_ports) { |
4f9e08a5 | 2520 | struct iface_hint *iface_hint = node->data; |
e1b1d06a JP |
2521 | |
2522 | if (!strcmp(iface_hint->br_name, p->name)) { | |
2523 | free(iface_hint->br_name); | |
2524 | free(iface_hint->br_type); | |
4f9e08a5 | 2525 | free(iface_hint); |
e1b1d06a JP |
2526 | shash_delete(&init_ofp_ports, node); |
2527 | } | |
2528 | } | |
2529 | ||
064af421 BP |
2530 | return 0; |
2531 | } | |
9197df76 JP |
2532 | |
2533 | /* Find the minimum MTU of all non-datapath devices attached to 'p'. | |
2534 | * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */ | |
2535 | static int | |
2536 | find_min_mtu(struct ofproto *p) | |
2537 | { | |
2538 | struct ofport *ofport; | |
2539 | int mtu = 0; | |
2540 | ||
2541 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2542 | struct netdev *netdev = ofport->netdev; | |
2543 | int dev_mtu; | |
2544 | ||
2545 | /* Skip any internal ports, since that's what we're trying to | |
2546 | * set. */ | |
2547 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
2548 | continue; | |
2549 | } | |
2550 | ||
2551 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2552 | continue; | |
2553 | } | |
2554 | if (!mtu || dev_mtu < mtu) { | |
2555 | mtu = dev_mtu; | |
2556 | } | |
2557 | } | |
2558 | ||
2559 | return mtu ? mtu: ETH_PAYLOAD_MAX; | |
2560 | } | |
2561 | ||
ada3428f PS |
2562 | /* Update MTU of all datapath devices on 'p' to the minimum of the |
2563 | * non-datapath ports in event of 'port' added or changed. */ | |
9197df76 | 2564 | static void |
ada3428f | 2565 | update_mtu(struct ofproto *p, struct ofport *port) |
9197df76 JP |
2566 | { |
2567 | struct ofport *ofport; | |
ada3428f PS |
2568 | struct netdev *netdev = port->netdev; |
2569 | int dev_mtu, old_min; | |
2570 | ||
2571 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2572 | port->mtu = 0; | |
2573 | return; | |
2574 | } | |
2575 | if (!strcmp(netdev_get_type(port->netdev), "internal")) { | |
2576 | if (dev_mtu > p->min_mtu) { | |
2577 | if (!netdev_set_mtu(port->netdev, p->min_mtu)) { | |
2578 | dev_mtu = p->min_mtu; | |
2579 | } | |
2580 | } | |
2581 | port->mtu = dev_mtu; | |
2582 | return; | |
2583 | } | |
2584 | ||
2585 | /* For non-internal port find new min mtu. */ | |
2586 | old_min = p->min_mtu; | |
2587 | port->mtu = dev_mtu; | |
2588 | p->min_mtu = find_min_mtu(p); | |
2589 | if (p->min_mtu == old_min) { | |
2590 | return; | |
2591 | } | |
9197df76 JP |
2592 | |
2593 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2594 | struct netdev *netdev = ofport->netdev; | |
2595 | ||
2596 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
ada3428f PS |
2597 | if (!netdev_set_mtu(netdev, p->min_mtu)) { |
2598 | ofport->mtu = p->min_mtu; | |
2599 | } | |
9197df76 JP |
2600 | } |
2601 | } | |
2602 | } | |
064af421 | 2603 | \f |
f416c8d6 JR |
2604 | static void |
2605 | ofproto_rule_destroy__(struct rule *rule) | |
2606 | OVS_NO_THREAD_SAFETY_ANALYSIS | |
2607 | { | |
2608 | cls_rule_destroy(CONST_CAST(struct cls_rule *, &rule->cr)); | |
2609 | rule_actions_destroy(rule_get_actions(rule)); | |
2610 | ovs_mutex_destroy(&rule->mutex); | |
2611 | rule->ofproto->ofproto_class->rule_dealloc(rule); | |
2612 | } | |
2613 | ||
2614 | static void | |
2615 | rule_destroy_cb(struct rule *rule) | |
2616 | { | |
2617 | rule->ofproto->ofproto_class->rule_destruct(rule); | |
2618 | ofproto_rule_destroy__(rule); | |
2619 | } | |
2620 | ||
a2143702 BP |
2621 | void |
2622 | ofproto_rule_ref(struct rule *rule) | |
064af421 | 2623 | { |
1eae3d33 | 2624 | if (rule) { |
37bec3d3 | 2625 | ovs_refcount_ref(&rule->ref_count); |
a2143702 BP |
2626 | } |
2627 | } | |
2628 | ||
f5d16e55 JR |
2629 | bool |
2630 | ofproto_rule_try_ref(struct rule *rule) | |
2631 | { | |
2632 | if (rule) { | |
2633 | return ovs_refcount_try_ref_rcu(&rule->ref_count); | |
2634 | } | |
2635 | return false; | |
2636 | } | |
2637 | ||
f416c8d6 JR |
2638 | /* Decrements 'rule''s ref_count and schedules 'rule' to be destroyed if the |
2639 | * ref_count reaches 0. | |
2640 | * | |
2641 | * Use of RCU allows short term use (between RCU quiescent periods) without | |
2642 | * keeping a reference. A reference must be taken if the rule needs to | |
2643 | * stay around accross the RCU quiescent periods. */ | |
a2143702 BP |
2644 | void |
2645 | ofproto_rule_unref(struct rule *rule) | |
2646 | { | |
24f83812 | 2647 | if (rule && ovs_refcount_unref_relaxed(&rule->ref_count) == 1) { |
f416c8d6 | 2648 | ovsrcu_postpone(rule_destroy_cb, rule); |
1eae3d33 | 2649 | } |
064af421 BP |
2650 | } |
2651 | ||
809c7548 RW |
2652 | void |
2653 | ofproto_group_ref(struct ofgroup *group) | |
2654 | { | |
2655 | if (group) { | |
2656 | ovs_refcount_ref(&group->ref_count); | |
2657 | } | |
2658 | } | |
2659 | ||
2660 | void | |
2661 | ofproto_group_unref(struct ofgroup *group) | |
2662 | { | |
2663 | if (group && ovs_refcount_unref(&group->ref_count) == 1) { | |
2664 | group->ofproto->ofproto_class->group_destruct(group); | |
2665 | ofputil_bucket_list_destroy(&group->buckets); | |
2666 | group->ofproto->ofproto_class->group_dealloc(group); | |
2667 | } | |
2668 | } | |
2669 | ||
65efd2ab JR |
2670 | static uint32_t get_provider_meter_id(const struct ofproto *, |
2671 | uint32_t of_meter_id); | |
2672 | ||
dc723c44 JR |
2673 | /* Creates and returns a new 'struct rule_actions', whose actions are a copy |
2674 | * of from the 'ofpacts_len' bytes of 'ofpacts'. */ | |
2675 | const struct rule_actions * | |
4c7562c5 | 2676 | rule_actions_create(const struct ofpact *ofpacts, size_t ofpacts_len) |
6f00e29b BP |
2677 | { |
2678 | struct rule_actions *actions; | |
2679 | ||
dc723c44 | 2680 | actions = xmalloc(sizeof *actions + ofpacts_len); |
6f00e29b | 2681 | actions->ofpacts_len = ofpacts_len; |
4c7562c5 | 2682 | actions->has_meter = ofpacts_get_meter(ofpacts, ofpacts_len) != 0; |
dc723c44 | 2683 | memcpy(actions->ofpacts, ofpacts, ofpacts_len); |
65efd2ab | 2684 | |
35f48b8b BP |
2685 | actions->has_learn_with_delete = (next_learn_with_delete(actions, NULL) |
2686 | != NULL); | |
2687 | ||
6f00e29b BP |
2688 | return actions; |
2689 | } | |
2690 | ||
dc723c44 | 2691 | /* Free the actions after the RCU quiescent period is reached. */ |
6f00e29b | 2692 | void |
dc723c44 | 2693 | rule_actions_destroy(const struct rule_actions *actions) |
6f00e29b | 2694 | { |
06a0f3e2 | 2695 | if (actions) { |
dc723c44 | 2696 | ovsrcu_postpone(free, CONST_CAST(struct rule_actions *, actions)); |
6f00e29b BP |
2697 | } |
2698 | } | |
2699 | ||
bcf84111 | 2700 | /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action |
f25d0cf3 | 2701 | * that outputs to 'port' (output to OFPP_FLOOD and OFPP_ALL doesn't count). */ |
cdbdeeda | 2702 | bool |
4e022ec0 | 2703 | ofproto_rule_has_out_port(const struct rule *rule, ofp_port_t port) |
15aaf599 | 2704 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 2705 | { |
06a0f3e2 BP |
2706 | if (port == OFPP_ANY) { |
2707 | return true; | |
2708 | } else { | |
2709 | const struct rule_actions *actions = rule_get_actions(rule); | |
2710 | return ofpacts_output_to_port(actions->ofpacts, | |
2711 | actions->ofpacts_len, port); | |
2712 | } | |
064af421 BP |
2713 | } |
2714 | ||
7395c052 | 2715 | /* Returns true if 'rule' has group and equals group_id. */ |
74e79b7c | 2716 | static bool |
7395c052 | 2717 | ofproto_rule_has_out_group(const struct rule *rule, uint32_t group_id) |
15aaf599 | 2718 | OVS_REQUIRES(ofproto_mutex) |
7395c052 | 2719 | { |
06a0f3e2 BP |
2720 | if (group_id == OFPG_ANY) { |
2721 | return true; | |
2722 | } else { | |
2723 | const struct rule_actions *actions = rule_get_actions(rule); | |
2724 | return ofpacts_output_to_group(actions->ofpacts, | |
2725 | actions->ofpacts_len, group_id); | |
2726 | } | |
7395c052 NZ |
2727 | } |
2728 | ||
35412852 BP |
2729 | static void |
2730 | rule_execute_destroy(struct rule_execute *e) | |
eedc0097 | 2731 | { |
35412852 BP |
2732 | ofproto_rule_unref(e->rule); |
2733 | list_remove(&e->list_node); | |
2734 | free(e); | |
2735 | } | |
eedc0097 | 2736 | |
35412852 BP |
2737 | /* Executes all "rule_execute" operations queued up in ofproto->rule_executes, |
2738 | * by passing them to the ofproto provider. */ | |
2739 | static void | |
2740 | run_rule_executes(struct ofproto *ofproto) | |
15aaf599 | 2741 | OVS_EXCLUDED(ofproto_mutex) |
35412852 BP |
2742 | { |
2743 | struct rule_execute *e, *next; | |
2744 | struct list executes; | |
2745 | ||
2746 | guarded_list_pop_all(&ofproto->rule_executes, &executes); | |
2747 | LIST_FOR_EACH_SAFE (e, next, list_node, &executes) { | |
35412852 BP |
2748 | struct flow flow; |
2749 | ||
b5e7e61a AZ |
2750 | flow_extract(e->packet, NULL, &flow); |
2751 | flow.in_port.ofp_port = e->in_port; | |
35412852 BP |
2752 | ofproto->ofproto_class->rule_execute(e->rule, &flow, e->packet); |
2753 | ||
2754 | rule_execute_destroy(e); | |
2755 | } | |
2756 | } | |
2757 | ||
2758 | /* Destroys and discards all "rule_execute" operations queued up in | |
2759 | * ofproto->rule_executes. */ | |
2760 | static void | |
2761 | destroy_rule_executes(struct ofproto *ofproto) | |
2762 | { | |
2763 | struct rule_execute *e, *next; | |
2764 | struct list executes; | |
2765 | ||
2766 | guarded_list_pop_all(&ofproto->rule_executes, &executes); | |
2767 | LIST_FOR_EACH_SAFE (e, next, list_node, &executes) { | |
2768 | ofpbuf_delete(e->packet); | |
2769 | rule_execute_destroy(e); | |
2770 | } | |
350a665f BP |
2771 | } |
2772 | ||
adcf00ba | 2773 | static bool |
834fe5cb | 2774 | rule_is_readonly(const struct rule *rule) |
5c67e4af | 2775 | { |
834fe5cb BP |
2776 | const struct oftable *table = &rule->ofproto->tables[rule->table_id]; |
2777 | return (table->flags & OFTABLE_READONLY) != 0; | |
5c67e4af | 2778 | } |
fa066f01 | 2779 | \f |
35f48b8b BP |
2780 | static uint32_t |
2781 | hash_learned_cookie(ovs_be64 cookie_, uint8_t table_id) | |
2782 | { | |
2783 | uint64_t cookie = (OVS_FORCE uint64_t) cookie_; | |
2784 | return hash_3words(cookie, cookie >> 32, table_id); | |
2785 | } | |
2786 | ||
2787 | static void | |
2788 | learned_cookies_update_one__(struct ofproto *ofproto, | |
2789 | const struct ofpact_learn *learn, | |
2790 | int delta, struct list *dead_cookies) | |
2791 | OVS_REQUIRES(ofproto_mutex) | |
2792 | { | |
2793 | uint32_t hash = hash_learned_cookie(learn->cookie, learn->table_id); | |
2794 | struct learned_cookie *c; | |
2795 | ||
2796 | HMAP_FOR_EACH_WITH_HASH (c, u.hmap_node, hash, &ofproto->learned_cookies) { | |
2797 | if (c->cookie == learn->cookie && c->table_id == learn->table_id) { | |
2798 | c->n += delta; | |
2799 | ovs_assert(c->n >= 0); | |
2800 | ||
2801 | if (!c->n) { | |
2802 | hmap_remove(&ofproto->learned_cookies, &c->u.hmap_node); | |
2803 | list_push_back(dead_cookies, &c->u.list_node); | |
2804 | } | |
2805 | ||
2806 | return; | |
2807 | } | |
2808 | } | |
2809 | ||
2810 | ovs_assert(delta > 0); | |
2811 | c = xmalloc(sizeof *c); | |
2812 | hmap_insert(&ofproto->learned_cookies, &c->u.hmap_node, hash); | |
2813 | c->cookie = learn->cookie; | |
2814 | c->table_id = learn->table_id; | |
2815 | c->n = delta; | |
2816 | } | |
2817 | ||
2818 | static const struct ofpact_learn * | |
2819 | next_learn_with_delete(const struct rule_actions *actions, | |
2820 | const struct ofpact_learn *start) | |
2821 | { | |
2822 | const struct ofpact *pos; | |
2823 | ||
2824 | for (pos = start ? ofpact_next(&start->ofpact) : actions->ofpacts; | |
2825 | pos < ofpact_end(actions->ofpacts, actions->ofpacts_len); | |
2826 | pos = ofpact_next(pos)) { | |
2827 | if (pos->type == OFPACT_LEARN) { | |
2828 | const struct ofpact_learn *learn = ofpact_get_LEARN(pos); | |
2829 | if (learn->flags & NX_LEARN_F_DELETE_LEARNED) { | |
2830 | return learn; | |
2831 | } | |
2832 | } | |
2833 | } | |
2834 | ||
2835 | return NULL; | |
2836 | } | |
2837 | ||
2838 | static void | |
2839 | learned_cookies_update__(struct ofproto *ofproto, | |
2840 | const struct rule_actions *actions, | |
2841 | int delta, struct list *dead_cookies) | |
2842 | OVS_REQUIRES(ofproto_mutex) | |
2843 | { | |
2844 | if (actions->has_learn_with_delete) { | |
2845 | const struct ofpact_learn *learn; | |
2846 | ||
2847 | for (learn = next_learn_with_delete(actions, NULL); learn; | |
2848 | learn = next_learn_with_delete(actions, learn)) { | |
2849 | learned_cookies_update_one__(ofproto, learn, delta, dead_cookies); | |
2850 | } | |
2851 | } | |
2852 | } | |
2853 | ||
2854 | static void | |
2855 | learned_cookies_inc(struct ofproto *ofproto, | |
2856 | const struct rule_actions *actions) | |
2857 | OVS_REQUIRES(ofproto_mutex) | |
2858 | { | |
2859 | learned_cookies_update__(ofproto, actions, +1, NULL); | |
2860 | } | |
2861 | ||
2862 | static void | |
2863 | learned_cookies_dec(struct ofproto *ofproto, | |
2864 | const struct rule_actions *actions, | |
2865 | struct list *dead_cookies) | |
2866 | OVS_REQUIRES(ofproto_mutex) | |
2867 | { | |
2868 | learned_cookies_update__(ofproto, actions, -1, dead_cookies); | |
2869 | } | |
2870 | ||
2871 | static void | |
2872 | learned_cookies_flush(struct ofproto *ofproto, struct list *dead_cookies) | |
2873 | OVS_REQUIRES(ofproto_mutex) | |
2874 | { | |
2875 | struct learned_cookie *c, *next; | |
2876 | ||
2877 | LIST_FOR_EACH_SAFE (c, next, u.list_node, dead_cookies) { | |
2878 | struct rule_criteria criteria; | |
2879 | struct rule_collection rules; | |
2880 | struct match match; | |
2881 | ||
2882 | match_init_catchall(&match); | |
2883 | rule_criteria_init(&criteria, c->table_id, &match, 0, | |
2884 | c->cookie, OVS_BE64_MAX, OFPP_ANY, OFPG_ANY); | |
2885 | rule_criteria_require_rw(&criteria, false); | |
2886 | collect_rules_loose(ofproto, &criteria, &rules); | |
2887 | delete_flows__(&rules, OFPRR_DELETE, NULL); | |
2888 | rule_criteria_destroy(&criteria); | |
2889 | rule_collection_destroy(&rules); | |
2890 | ||
2891 | list_remove(&c->u.list_node); | |
2892 | free(c); | |
2893 | } | |
2894 | } | |
2895 | \f | |
90bf1e07 | 2896 | static enum ofperr |
d1e2cf21 | 2897 | handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2898 | { |
b0421aa2 | 2899 | ofconn_send_reply(ofconn, make_echo_reply(oh)); |
064af421 | 2900 | return 0; |
064af421 BP |
2901 | } |
2902 | ||
3c1bb396 BP |
2903 | static void |
2904 | query_tables(struct ofproto *ofproto, | |
2905 | struct ofputil_table_features **featuresp, | |
2906 | struct ofputil_table_stats **statsp) | |
2907 | { | |
178742f9 BP |
2908 | struct mf_bitmap rw_fields = oxm_writable_fields(); |
2909 | struct mf_bitmap match = oxm_matchable_fields(); | |
2910 | struct mf_bitmap mask = oxm_maskable_fields(); | |
3c1bb396 BP |
2911 | |
2912 | struct ofputil_table_features *features; | |
2913 | struct ofputil_table_stats *stats; | |
2914 | int i; | |
2915 | ||
3c1bb396 BP |
2916 | features = *featuresp = xcalloc(ofproto->n_tables, sizeof *features); |
2917 | for (i = 0; i < ofproto->n_tables; i++) { | |
2918 | struct ofputil_table_features *f = &features[i]; | |
2919 | ||
2920 | f->table_id = i; | |
2921 | sprintf(f->name, "table%d", i); | |
2922 | f->metadata_match = OVS_BE64_MAX; | |
2923 | f->metadata_write = OVS_BE64_MAX; | |
afcea9ea | 2924 | atomic_read_relaxed(&ofproto->tables[i].miss_config, &f->miss_config); |
3c1bb396 BP |
2925 | f->max_entries = 1000000; |
2926 | ||
2927 | bitmap_set_multiple(f->nonmiss.next, i + 1, | |
2928 | ofproto->n_tables - (i + 1), true); | |
2929 | f->nonmiss.instructions = (1u << N_OVS_INSTRUCTIONS) - 1; | |
2930 | if (i == ofproto->n_tables - 1) { | |
2931 | f->nonmiss.instructions &= ~(1u << OVSINST_OFPIT11_GOTO_TABLE); | |
2932 | } | |
2933 | f->nonmiss.write.ofpacts = (UINT64_C(1) << N_OFPACTS) - 1; | |
2934 | f->nonmiss.write.set_fields = rw_fields; | |
2935 | f->nonmiss.apply = f->nonmiss.write; | |
2936 | f->miss = f->nonmiss; | |
2937 | ||
2938 | f->match = match; | |
2939 | f->mask = mask; | |
2940 | f->wildcard = match; | |
2941 | } | |
2942 | ||
2943 | if (statsp) { | |
2944 | stats = *statsp = xcalloc(ofproto->n_tables, sizeof *stats); | |
2945 | for (i = 0; i < ofproto->n_tables; i++) { | |
2946 | struct ofputil_table_stats *s = &stats[i]; | |
2947 | struct classifier *cls = &ofproto->tables[i].cls; | |
2948 | ||
2949 | s->table_id = i; | |
2950 | s->active_count = classifier_count(cls); | |
2951 | } | |
2952 | } else { | |
2953 | stats = NULL; | |
2954 | } | |
2955 | ||
2956 | ofproto->ofproto_class->query_tables(ofproto, features, stats); | |
2957 | ||
2958 | for (i = 0; i < ofproto->n_tables; i++) { | |
2959 | const struct oftable *table = &ofproto->tables[i]; | |
2960 | struct ofputil_table_features *f = &features[i]; | |
2961 | ||
2962 | if (table->name) { | |
2963 | ovs_strzcpy(f->name, table->name, sizeof f->name); | |
2964 | } | |
2965 | ||
2966 | if (table->max_flows < f->max_entries) { | |
2967 | f->max_entries = table->max_flows; | |
2968 | } | |
2969 | } | |
2970 | } | |
2971 | ||
2972 | static void | |
2973 | query_switch_features(struct ofproto *ofproto, | |
2974 | bool *arp_match_ip, uint64_t *ofpacts) | |
2975 | { | |
2976 | struct ofputil_table_features *features, *f; | |
2977 | ||
2978 | *arp_match_ip = false; | |
2979 | *ofpacts = 0; | |
2980 | ||
2981 | query_tables(ofproto, &features, NULL); | |
2982 | for (f = features; f < &features[ofproto->n_tables]; f++) { | |
2983 | *ofpacts |= f->nonmiss.apply.ofpacts | f->miss.apply.ofpacts; | |
2984 | if (bitmap_is_set(f->match.bm, MFF_ARP_SPA) || | |
2985 | bitmap_is_set(f->match.bm, MFF_ARP_TPA)) { | |
2986 | *arp_match_ip = true; | |
2987 | } | |
2988 | } | |
2989 | free(features); | |
2990 | ||
2991 | /* Sanity check. */ | |
2992 | ovs_assert(*ofpacts & (UINT64_C(1) << OFPACT_OUTPUT)); | |
2993 | } | |
2994 | ||
90bf1e07 | 2995 | static enum ofperr |
d1e2cf21 | 2996 | handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2997 | { |
64ff1d96 | 2998 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
9e1fd49b | 2999 | struct ofputil_switch_features features; |
064af421 | 3000 | struct ofport *port; |
6c1491fb | 3001 | bool arp_match_ip; |
9e1fd49b | 3002 | struct ofpbuf *b; |
064af421 | 3003 | |
3c1bb396 | 3004 | query_switch_features(ofproto, &arp_match_ip, &features.ofpacts); |
064af421 | 3005 | |
9e1fd49b BP |
3006 | features.datapath_id = ofproto->datapath_id; |
3007 | features.n_buffers = pktbuf_capacity(); | |
adcf00ba | 3008 | features.n_tables = ofproto_get_n_visible_tables(ofproto); |
9e1fd49b | 3009 | features.capabilities = (OFPUTIL_C_FLOW_STATS | OFPUTIL_C_TABLE_STATS | |
4efe455d BP |
3010 | OFPUTIL_C_PORT_STATS | OFPUTIL_C_QUEUE_STATS | |
3011 | OFPUTIL_C_GROUP_STATS); | |
6c1491fb | 3012 | if (arp_match_ip) { |
9e1fd49b | 3013 | features.capabilities |= OFPUTIL_C_ARP_MATCH_IP; |
6c1491fb | 3014 | } |
2e1ae200 JR |
3015 | /* FIXME: Fill in proper features.auxiliary_id for auxiliary connections */ |
3016 | features.auxiliary_id = 0; | |
9e1fd49b BP |
3017 | b = ofputil_encode_switch_features(&features, ofconn_get_protocol(ofconn), |
3018 | oh->xid); | |
64ff1d96 | 3019 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
9e1fd49b | 3020 | ofputil_put_switch_features_port(&port->pp, b); |
064af421 | 3021 | } |
064af421 | 3022 | |
9e1fd49b | 3023 | ofconn_send_reply(ofconn, b); |
064af421 BP |
3024 | return 0; |
3025 | } | |
064af421 | 3026 | |
90bf1e07 | 3027 | static enum ofperr |
d1e2cf21 | 3028 | handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3029 | { |
64ff1d96 | 3030 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 | 3031 | struct ofp_switch_config *osc; |
f0fd1a17 | 3032 | enum ofp_config_flags flags; |
7257b535 | 3033 | struct ofpbuf *buf; |
959a2ecd | 3034 | |
064af421 | 3035 | /* Send reply. */ |
982697a4 BP |
3036 | buf = ofpraw_alloc_reply(OFPRAW_OFPT_GET_CONFIG_REPLY, oh, 0); |
3037 | osc = ofpbuf_put_uninit(buf, sizeof *osc); | |
f0fd1a17 | 3038 | flags = ofproto->frag_handling; |
2e1ae200 JR |
3039 | /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */ |
3040 | if (oh->version < OFP13_VERSION | |
3041 | && ofconn_get_invalid_ttl_to_controller(ofconn)) { | |
f0fd1a17 PS |
3042 | flags |= OFPC_INVALID_TTL_TO_CONTROLLER; |
3043 | } | |
3044 | osc->flags = htons(flags); | |
810605a2 | 3045 | osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn)); |
b0421aa2 | 3046 | ofconn_send_reply(ofconn, buf); |
2d70a31a | 3047 | |
064af421 BP |
3048 | return 0; |
3049 | } | |
064af421 | 3050 | |
90bf1e07 | 3051 | static enum ofperr |
982697a4 | 3052 | handle_set_config(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3053 | { |
982697a4 | 3054 | const struct ofp_switch_config *osc = ofpmsg_body(oh); |
64ff1d96 | 3055 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
d1e2cf21 | 3056 | uint16_t flags = ntohs(osc->flags); |
2d70a31a | 3057 | |
7257b535 | 3058 | if (ofconn_get_type(ofconn) != OFCONN_PRIMARY |
f4f1ea7e | 3059 | || ofconn_get_role(ofconn) != OFPCR12_ROLE_SLAVE) { |
7257b535 BP |
3060 | enum ofp_config_flags cur = ofproto->frag_handling; |
3061 | enum ofp_config_flags next = flags & OFPC_FRAG_MASK; | |
3062 | ||
cb22974d | 3063 | ovs_assert((cur & OFPC_FRAG_MASK) == cur); |
7257b535 BP |
3064 | if (cur != next) { |
3065 | if (ofproto->ofproto_class->set_frag_handling(ofproto, next)) { | |
3066 | ofproto->frag_handling = next; | |
3067 | } else { | |
3068 | VLOG_WARN_RL(&rl, "%s: unsupported fragment handling mode %s", | |
3069 | ofproto->name, | |
3070 | ofputil_frag_handling_to_string(next)); | |
3071 | } | |
064af421 BP |
3072 | } |
3073 | } | |
2e1ae200 | 3074 | /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */ |
f0fd1a17 | 3075 | ofconn_set_invalid_ttl_to_controller(ofconn, |
2e1ae200 JR |
3076 | (oh->version < OFP13_VERSION |
3077 | && flags & OFPC_INVALID_TTL_TO_CONTROLLER)); | |
ebe482fd | 3078 | |
810605a2 | 3079 | ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len)); |
0ad9b732 | 3080 | |
064af421 | 3081 | return 0; |
064af421 BP |
3082 | } |
3083 | ||
9deba63b | 3084 | /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow |
90bf1e07 BP |
3085 | * error message code for the caller to propagate upward. Otherwise, returns |
3086 | * 0. | |
3087 | * | |
3088 | * The log message mentions 'msg_type'. */ | |
3089 | static enum ofperr | |
3090 | reject_slave_controller(struct ofconn *ofconn) | |
9deba63b | 3091 | { |
1ce0a5fa | 3092 | if (ofconn_get_type(ofconn) == OFCONN_PRIMARY |
f4f1ea7e | 3093 | && ofconn_get_role(ofconn) == OFPCR12_ROLE_SLAVE) { |
90bf1e07 | 3094 | return OFPERR_OFPBRC_EPERM; |
9deba63b BP |
3095 | } else { |
3096 | return 0; | |
3097 | } | |
3098 | } | |
3099 | ||
7e9f8266 BP |
3100 | /* Checks that the 'ofpacts_len' bytes of action in 'ofpacts' are appropriate |
3101 | * for 'ofproto': | |
3102 | * | |
3103 | * - If they use a meter, then 'ofproto' has that meter configured. | |
3104 | * | |
3105 | * - If they use any groups, then 'ofproto' has that group configured. | |
3106 | * | |
3107 | * Returns 0 if successful, otherwise an OpenFlow error. */ | |
9cae45dc JR |
3108 | static enum ofperr |
3109 | ofproto_check_ofpacts(struct ofproto *ofproto, | |
7e9f8266 | 3110 | const struct ofpact ofpacts[], size_t ofpacts_len) |
9cae45dc | 3111 | { |
84d68566 | 3112 | const struct ofpact *a; |
9cae45dc JR |
3113 | uint32_t mid; |
3114 | ||
7e9f8266 BP |
3115 | mid = ofpacts_get_meter(ofpacts, ofpacts_len); |
3116 | if (mid && get_provider_meter_id(ofproto, mid) == UINT32_MAX) { | |
3117 | return OFPERR_OFPMMFC_INVALID_METER; | |
9cae45dc JR |
3118 | } |
3119 | ||
84d68566 | 3120 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
7e9f8266 BP |
3121 | if (a->type == OFPACT_GROUP |
3122 | && !ofproto_group_exists(ofproto, ofpact_get_GROUP(a)->group_id)) { | |
3123 | return OFPERR_OFPBAC_BAD_OUT_GROUP; | |
84d68566 SH |
3124 | } |
3125 | } | |
3126 | ||
9cae45dc JR |
3127 | return 0; |
3128 | } | |
3129 | ||
90bf1e07 | 3130 | static enum ofperr |
982697a4 | 3131 | handle_packet_out(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3132 | { |
64ff1d96 | 3133 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
c6a93eb7 BP |
3134 | struct ofputil_packet_out po; |
3135 | struct ofpbuf *payload; | |
f25d0cf3 BP |
3136 | uint64_t ofpacts_stub[1024 / 8]; |
3137 | struct ofpbuf ofpacts; | |
ae412e7d | 3138 | struct flow flow; |
90bf1e07 | 3139 | enum ofperr error; |
064af421 | 3140 | |
ac51afaf BP |
3141 | COVERAGE_INC(ofproto_packet_out); |
3142 | ||
76589937 | 3143 | error = reject_slave_controller(ofconn); |
9deba63b | 3144 | if (error) { |
f25d0cf3 | 3145 | goto exit; |
9deba63b BP |
3146 | } |
3147 | ||
c6a93eb7 | 3148 | /* Decode message. */ |
f25d0cf3 | 3149 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
982697a4 | 3150 | error = ofputil_decode_packet_out(&po, oh, &ofpacts); |
064af421 | 3151 | if (error) { |
f25d0cf3 | 3152 | goto exit_free_ofpacts; |
064af421 | 3153 | } |
430dbb14 | 3154 | if (ofp_to_u16(po.in_port) >= p->max_ports |
4e022ec0 | 3155 | && ofp_to_u16(po.in_port) < ofp_to_u16(OFPP_MAX)) { |
2e1bfcb6 | 3156 | error = OFPERR_OFPBRC_BAD_PORT; |
91858960 BP |
3157 | goto exit_free_ofpacts; |
3158 | } | |
064af421 | 3159 | |
ac51afaf | 3160 | /* Get payload. */ |
c6a93eb7 BP |
3161 | if (po.buffer_id != UINT32_MAX) { |
3162 | error = ofconn_pktbuf_retrieve(ofconn, po.buffer_id, &payload, NULL); | |
3163 | if (error || !payload) { | |
f25d0cf3 | 3164 | goto exit_free_ofpacts; |
064af421 | 3165 | } |
064af421 | 3166 | } else { |
bb622f82 BP |
3167 | /* Ensure that the L3 header is 32-bit aligned. */ |
3168 | payload = ofpbuf_clone_data_with_headroom(po.packet, po.packet_len, 2); | |
e1154f71 BP |
3169 | } |
3170 | ||
548de4dd | 3171 | /* Verify actions against packet, then send packet if successful. */ |
b5e7e61a AZ |
3172 | flow_extract(payload, NULL, &flow); |
3173 | flow.in_port.ofp_port = po.in_port; | |
7e9f8266 | 3174 | error = ofproto_check_ofpacts(p, po.ofpacts, po.ofpacts_len); |
548de4dd BP |
3175 | if (!error) { |
3176 | error = p->ofproto_class->packet_out(p, payload, &flow, | |
3177 | po.ofpacts, po.ofpacts_len); | |
3178 | } | |
c6a93eb7 | 3179 | ofpbuf_delete(payload); |
abe529af | 3180 | |
f25d0cf3 BP |
3181 | exit_free_ofpacts: |
3182 | ofpbuf_uninit(&ofpacts); | |
3183 | exit: | |
abe529af | 3184 | return error; |
064af421 BP |
3185 | } |
3186 | ||
3187 | static void | |
2a6f78e0 | 3188 | update_port_config(struct ofconn *ofconn, struct ofport *port, |
9e1fd49b BP |
3189 | enum ofputil_port_config config, |
3190 | enum ofputil_port_config mask) | |
064af421 | 3191 | { |
2a6f78e0 | 3192 | enum ofputil_port_config toggle = (config ^ port->pp.config) & mask; |
abe529af | 3193 | |
2a6f78e0 BP |
3194 | if (toggle & OFPUTIL_PC_PORT_DOWN |
3195 | && (config & OFPUTIL_PC_PORT_DOWN | |
3196 | ? netdev_turn_flags_off(port->netdev, NETDEV_UP, NULL) | |
3197 | : netdev_turn_flags_on(port->netdev, NETDEV_UP, NULL))) { | |
3198 | /* We tried to bring the port up or down, but it failed, so don't | |
3199 | * update the "down" bit. */ | |
9e1fd49b | 3200 | toggle &= ~OFPUTIL_PC_PORT_DOWN; |
064af421 | 3201 | } |
abe529af | 3202 | |
2a6f78e0 BP |
3203 | if (toggle) { |
3204 | enum ofputil_port_config old_config = port->pp.config; | |
3205 | port->pp.config ^= toggle; | |
abe529af | 3206 | port->ofproto->ofproto_class->port_reconfigured(port, old_config); |
2a6f78e0 BP |
3207 | connmgr_send_port_status(port->ofproto->connmgr, ofconn, &port->pp, |
3208 | OFPPR_MODIFY); | |
064af421 BP |
3209 | } |
3210 | } | |
3211 | ||
90bf1e07 | 3212 | static enum ofperr |
d1e2cf21 | 3213 | handle_port_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3214 | { |
64ff1d96 | 3215 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
9e1fd49b | 3216 | struct ofputil_port_mod pm; |
064af421 | 3217 | struct ofport *port; |
9e1fd49b | 3218 | enum ofperr error; |
064af421 | 3219 | |
76589937 | 3220 | error = reject_slave_controller(ofconn); |
9deba63b BP |
3221 | if (error) { |
3222 | return error; | |
3223 | } | |
064af421 | 3224 | |
18cc69d9 | 3225 | error = ofputil_decode_port_mod(oh, &pm, false); |
9e1fd49b BP |
3226 | if (error) { |
3227 | return error; | |
3228 | } | |
3229 | ||
3230 | port = ofproto_get_port(p, pm.port_no); | |
064af421 | 3231 | if (!port) { |
90bf1e07 | 3232 | return OFPERR_OFPPMFC_BAD_PORT; |
9e1fd49b | 3233 | } else if (!eth_addr_equals(port->pp.hw_addr, pm.hw_addr)) { |
90bf1e07 | 3234 | return OFPERR_OFPPMFC_BAD_HW_ADDR; |
064af421 | 3235 | } else { |
2a6f78e0 | 3236 | update_port_config(ofconn, port, pm.config, pm.mask); |
9e1fd49b BP |
3237 | if (pm.advertise) { |
3238 | netdev_set_advertisements(port->netdev, pm.advertise); | |
064af421 BP |
3239 | } |
3240 | } | |
3241 | return 0; | |
3242 | } | |
3243 | ||
90bf1e07 | 3244 | static enum ofperr |
3269c562 | 3245 | handle_desc_stats_request(struct ofconn *ofconn, |
982697a4 | 3246 | const struct ofp_header *request) |
064af421 | 3247 | { |
061bfea4 BP |
3248 | static const char *default_mfr_desc = "Nicira, Inc."; |
3249 | static const char *default_hw_desc = "Open vSwitch"; | |
3250 | static const char *default_sw_desc = VERSION; | |
3251 | static const char *default_serial_desc = "None"; | |
3252 | static const char *default_dp_desc = "None"; | |
3253 | ||
64ff1d96 | 3254 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 BP |
3255 | struct ofp_desc_stats *ods; |
3256 | struct ofpbuf *msg; | |
3257 | ||
982697a4 BP |
3258 | msg = ofpraw_alloc_stats_reply(request, 0); |
3259 | ods = ofpbuf_put_zeros(msg, sizeof *ods); | |
061bfea4 BP |
3260 | ovs_strlcpy(ods->mfr_desc, p->mfr_desc ? p->mfr_desc : default_mfr_desc, |
3261 | sizeof ods->mfr_desc); | |
3262 | ovs_strlcpy(ods->hw_desc, p->hw_desc ? p->hw_desc : default_hw_desc, | |
3263 | sizeof ods->hw_desc); | |
3264 | ovs_strlcpy(ods->sw_desc, p->sw_desc ? p->sw_desc : default_sw_desc, | |
3265 | sizeof ods->sw_desc); | |
3266 | ovs_strlcpy(ods->serial_num, | |
3267 | p->serial_desc ? p->serial_desc : default_serial_desc, | |
3268 | sizeof ods->serial_num); | |
3269 | ovs_strlcpy(ods->dp_desc, p->dp_desc ? p->dp_desc : default_dp_desc, | |
3270 | sizeof ods->dp_desc); | |
b0421aa2 | 3271 | ofconn_send_reply(ofconn, msg); |
064af421 BP |
3272 | |
3273 | return 0; | |
3274 | } | |
3275 | ||
90bf1e07 | 3276 | static enum ofperr |
3269c562 | 3277 | handle_table_stats_request(struct ofconn *ofconn, |
982697a4 | 3278 | const struct ofp_header *request) |
064af421 | 3279 | { |
3c1bb396 BP |
3280 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
3281 | struct ofputil_table_features *features; | |
08d1e234 | 3282 | struct ofputil_table_stats *stats; |
3c1bb396 | 3283 | struct ofpbuf *reply; |
6c1491fb | 3284 | size_t i; |
064af421 | 3285 | |
3c1bb396 | 3286 | query_tables(ofproto, &features, &stats); |
254750ce | 3287 | |
3c1bb396 BP |
3288 | reply = ofputil_encode_table_stats_reply(request); |
3289 | for (i = 0; i < ofproto->n_tables; i++) { | |
3290 | if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) { | |
3291 | ofputil_append_table_stats_reply(reply, &stats[i], &features[i]); | |
254750ce BP |
3292 | } |
3293 | } | |
3c1bb396 | 3294 | ofconn_send_reply(ofconn, reply); |
254750ce | 3295 | |
3c1bb396 | 3296 | free(features); |
08d1e234 | 3297 | free(stats); |
307975da | 3298 | |
064af421 BP |
3299 | return 0; |
3300 | } | |
3301 | ||
3c4e10fb BP |
3302 | static enum ofperr |
3303 | handle_table_features_request(struct ofconn *ofconn, | |
3304 | const struct ofp_header *request) | |
3305 | { | |
3306 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
3307 | struct ofputil_table_features *features; | |
3308 | struct list replies; | |
3309 | struct ofpbuf msg; | |
3310 | size_t i; | |
3311 | ||
3312 | ofpbuf_use_const(&msg, request, ntohs(request->length)); | |
3313 | ofpraw_pull_assert(&msg); | |
3314 | if (ofpbuf_size(&msg) || ofpmp_more(request)) { | |
3315 | return OFPERR_OFPTFFC_EPERM; | |
3316 | } | |
3317 | ||
3318 | query_tables(ofproto, &features, NULL); | |
3319 | ||
3320 | ofpmp_init(&replies, request); | |
3321 | for (i = 0; i < ofproto->n_tables; i++) { | |
3322 | if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) { | |
3323 | ofputil_append_table_features_reply(&features[i], &replies); | |
3324 | } | |
3325 | } | |
3326 | ofconn_send_replies(ofconn, &replies); | |
3327 | ||
3328 | free(features); | |
3329 | ||
3330 | return 0; | |
3331 | } | |
3332 | ||
abaad8cf | 3333 | static void |
63f2140a | 3334 | append_port_stat(struct ofport *port, struct list *replies) |
abaad8cf | 3335 | { |
f8e4867e | 3336 | struct ofputil_port_stats ops = { .port_no = port->pp.port_no }; |
abaad8cf | 3337 | |
65e0be10 BP |
3338 | calc_duration(port->created, time_msec(), |
3339 | &ops.duration_sec, &ops.duration_nsec); | |
3340 | ||
d295e8e9 JP |
3341 | /* Intentionally ignore return value, since errors will set |
3342 | * 'stats' to all-1s, which is correct for OpenFlow, and | |
abaad8cf | 3343 | * netdev_get_stats() will log errors. */ |
f8e4867e SH |
3344 | ofproto_port_get_stats(port, &ops.stats); |
3345 | ||
3346 | ofputil_append_port_stat(replies, &ops); | |
abaad8cf JP |
3347 | } |
3348 | ||
70ae4f93 BP |
3349 | static void |
3350 | handle_port_request(struct ofconn *ofconn, | |
3351 | const struct ofp_header *request, ofp_port_t port_no, | |
3352 | void (*cb)(struct ofport *, struct list *replies)) | |
064af421 | 3353 | { |
70ae4f93 | 3354 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 | 3355 | struct ofport *port; |
63f2140a | 3356 | struct list replies; |
064af421 | 3357 | |
982697a4 | 3358 | ofpmp_init(&replies, request); |
7f05e7ab | 3359 | if (port_no != OFPP_ANY) { |
70ae4f93 | 3360 | port = ofproto_get_port(ofproto, port_no); |
abaad8cf | 3361 | if (port) { |
70ae4f93 | 3362 | cb(port, &replies); |
abaad8cf JP |
3363 | } |
3364 | } else { | |
70ae4f93 BP |
3365 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
3366 | cb(port, &replies); | |
abaad8cf | 3367 | } |
064af421 BP |
3368 | } |
3369 | ||
63f2140a | 3370 | ofconn_send_replies(ofconn, &replies); |
70ae4f93 BP |
3371 | } |
3372 | ||
3373 | static enum ofperr | |
3374 | handle_port_stats_request(struct ofconn *ofconn, | |
3375 | const struct ofp_header *request) | |
3376 | { | |
3377 | ofp_port_t port_no; | |
3378 | enum ofperr error; | |
3379 | ||
3380 | error = ofputil_decode_port_stats_request(request, &port_no); | |
3381 | if (!error) { | |
3382 | handle_port_request(ofconn, request, port_no, append_port_stat); | |
3383 | } | |
3384 | return error; | |
3385 | } | |
3386 | ||
3387 | static void | |
3388 | append_port_desc(struct ofport *port, struct list *replies) | |
3389 | { | |
3390 | ofputil_append_port_desc_stats_reply(&port->pp, replies); | |
064af421 BP |
3391 | } |
3392 | ||
2be393ed JP |
3393 | static enum ofperr |
3394 | handle_port_desc_stats_request(struct ofconn *ofconn, | |
982697a4 | 3395 | const struct ofp_header *request) |
2be393ed | 3396 | { |
70ae4f93 BP |
3397 | ofp_port_t port_no; |
3398 | enum ofperr error; | |
2be393ed | 3399 | |
70ae4f93 BP |
3400 | error = ofputil_decode_port_desc_stats_request(request, &port_no); |
3401 | if (!error) { | |
3402 | handle_port_request(ofconn, request, port_no, append_port_desc); | |
2be393ed | 3403 | } |
70ae4f93 | 3404 | return error; |
2be393ed JP |
3405 | } |
3406 | ||
98eaac36 JR |
3407 | static uint32_t |
3408 | hash_cookie(ovs_be64 cookie) | |
3409 | { | |
965607c8 | 3410 | return hash_uint64((OVS_FORCE uint64_t)cookie); |
98eaac36 JR |
3411 | } |
3412 | ||
3413 | static void | |
3414 | cookies_insert(struct ofproto *ofproto, struct rule *rule) | |
2c916028 | 3415 | OVS_REQUIRES(ofproto_mutex) |
98eaac36 JR |
3416 | { |
3417 | hindex_insert(&ofproto->cookies, &rule->cookie_node, | |
3418 | hash_cookie(rule->flow_cookie)); | |
3419 | } | |
3420 | ||
3421 | static void | |
3422 | cookies_remove(struct ofproto *ofproto, struct rule *rule) | |
2c916028 | 3423 | OVS_REQUIRES(ofproto_mutex) |
98eaac36 JR |
3424 | { |
3425 | hindex_remove(&ofproto->cookies, &rule->cookie_node); | |
3426 | } | |
3427 | ||
c6ebb8fb | 3428 | static void |
65e0be10 BP |
3429 | calc_duration(long long int start, long long int now, |
3430 | uint32_t *sec, uint32_t *nsec) | |
c6ebb8fb | 3431 | { |
f27f2134 | 3432 | long long int msecs = now - start; |
588cd7b5 BP |
3433 | *sec = msecs / 1000; |
3434 | *nsec = (msecs % 1000) * (1000 * 1000); | |
3435 | } | |
3436 | ||
48266274 | 3437 | /* Checks whether 'table_id' is 0xff or a valid table ID in 'ofproto'. Returns |
554764d1 SH |
3438 | * true if 'table_id' is OK, false otherwise. */ |
3439 | static bool | |
48266274 BP |
3440 | check_table_id(const struct ofproto *ofproto, uint8_t table_id) |
3441 | { | |
554764d1 | 3442 | return table_id == OFPTT_ALL || table_id < ofproto->n_tables; |
48266274 BP |
3443 | } |
3444 | ||
5c67e4af | 3445 | static struct oftable * |
d4ce8a49 | 3446 | next_visible_table(const struct ofproto *ofproto, uint8_t table_id) |
5c67e4af BP |
3447 | { |
3448 | struct oftable *table; | |
3449 | ||
3450 | for (table = &ofproto->tables[table_id]; | |
3451 | table < &ofproto->tables[ofproto->n_tables]; | |
3452 | table++) { | |
3453 | if (!(table->flags & OFTABLE_HIDDEN)) { | |
3454 | return table; | |
3455 | } | |
3456 | } | |
3457 | ||
3458 | return NULL; | |
3459 | } | |
3460 | ||
d0918789 | 3461 | static struct oftable * |
d4ce8a49 | 3462 | first_matching_table(const struct ofproto *ofproto, uint8_t table_id) |
064af421 | 3463 | { |
6c1491fb | 3464 | if (table_id == 0xff) { |
5c67e4af | 3465 | return next_visible_table(ofproto, 0); |
6c1491fb BP |
3466 | } else if (table_id < ofproto->n_tables) { |
3467 | return &ofproto->tables[table_id]; | |
a02e5331 | 3468 | } else { |
6c1491fb | 3469 | return NULL; |
a02e5331 | 3470 | } |
064af421 BP |
3471 | } |
3472 | ||
d0918789 | 3473 | static struct oftable * |
d4ce8a49 BP |
3474 | next_matching_table(const struct ofproto *ofproto, |
3475 | const struct oftable *table, uint8_t table_id) | |
6c1491fb | 3476 | { |
5c67e4af BP |
3477 | return (table_id == 0xff |
3478 | ? next_visible_table(ofproto, (table - ofproto->tables) + 1) | |
6c1491fb BP |
3479 | : NULL); |
3480 | } | |
3481 | ||
d0918789 | 3482 | /* Assigns TABLE to each oftable, in turn, that matches TABLE_ID in OFPROTO: |
6c1491fb BP |
3483 | * |
3484 | * - If TABLE_ID is 0xff, this iterates over every classifier table in | |
5c67e4af | 3485 | * OFPROTO, skipping tables marked OFTABLE_HIDDEN. |
6c1491fb BP |
3486 | * |
3487 | * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates | |
5c67e4af BP |
3488 | * only once, for that table. (This can be used to access tables marked |
3489 | * OFTABLE_HIDDEN.) | |
6c1491fb | 3490 | * |
48266274 BP |
3491 | * - Otherwise, TABLE_ID isn't valid for OFPROTO, so the loop won't be |
3492 | * entered at all. (Perhaps you should have validated TABLE_ID with | |
3493 | * check_table_id().) | |
6c1491fb BP |
3494 | * |
3495 | * All parameters are evaluated multiple times. | |
3496 | */ | |
d0918789 BP |
3497 | #define FOR_EACH_MATCHING_TABLE(TABLE, TABLE_ID, OFPROTO) \ |
3498 | for ((TABLE) = first_matching_table(OFPROTO, TABLE_ID); \ | |
3499 | (TABLE) != NULL; \ | |
3500 | (TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID)) | |
6c1491fb | 3501 | |
a9b22b7f BP |
3502 | /* Initializes 'criteria' in a straightforward way based on the other |
3503 | * parameters. | |
3504 | * | |
dd51dae2 BP |
3505 | * By default, the criteria include flows that are read-only, on the assumption |
3506 | * that the collected flows won't be modified. Call rule_criteria_require_rw() | |
3507 | * if flows will be modified. | |
3508 | * | |
a9b22b7f BP |
3509 | * For "loose" matching, the 'priority' parameter is unimportant and may be |
3510 | * supplied as 0. */ | |
3511 | static void | |
3512 | rule_criteria_init(struct rule_criteria *criteria, uint8_t table_id, | |
3513 | const struct match *match, unsigned int priority, | |
3514 | ovs_be64 cookie, ovs_be64 cookie_mask, | |
3515 | ofp_port_t out_port, uint32_t out_group) | |
3516 | { | |
3517 | criteria->table_id = table_id; | |
3518 | cls_rule_init(&criteria->cr, match, priority); | |
3519 | criteria->cookie = cookie; | |
3520 | criteria->cookie_mask = cookie_mask; | |
3521 | criteria->out_port = out_port; | |
3522 | criteria->out_group = out_group; | |
dd51dae2 BP |
3523 | |
3524 | /* We ordinarily want to skip hidden rules, but there has to be a way for | |
3525 | * code internal to OVS to modify and delete them, so if the criteria | |
3526 | * specify a priority that can only be for a hidden flow, then allow hidden | |
3527 | * rules to be selected. (This doesn't allow OpenFlow clients to meddle | |
3528 | * with hidden flows because OpenFlow uses only a 16-bit field to specify | |
3529 | * priority.) */ | |
3530 | criteria->include_hidden = priority > UINT16_MAX; | |
3531 | ||
3532 | /* We assume that the criteria are being used to collect flows for reading | |
3533 | * but not modification. Thus, we should collect read-only flows. */ | |
3534 | criteria->include_readonly = true; | |
3535 | } | |
3536 | ||
3537 | /* By default, criteria initialized by rule_criteria_init() will match flows | |
3538 | * that are read-only, on the assumption that the collected flows won't be | |
3539 | * modified. Call this function to match only flows that are be modifiable. | |
3540 | * | |
3541 | * Specify 'can_write_readonly' as false in ordinary circumstances, true if the | |
3542 | * caller has special privileges that allow it to modify even "read-only" | |
3543 | * flows. */ | |
3544 | static void | |
3545 | rule_criteria_require_rw(struct rule_criteria *criteria, | |
3546 | bool can_write_readonly) | |
3547 | { | |
3548 | criteria->include_readonly = can_write_readonly; | |
a9b22b7f BP |
3549 | } |
3550 | ||
3551 | static void | |
3552 | rule_criteria_destroy(struct rule_criteria *criteria) | |
3553 | { | |
3554 | cls_rule_destroy(&criteria->cr); | |
3555 | } | |
3556 | ||
a8e547c1 BP |
3557 | void |
3558 | rule_collection_init(struct rule_collection *rules) | |
3559 | { | |
3560 | rules->rules = rules->stub; | |
3561 | rules->n = 0; | |
3562 | rules->capacity = ARRAY_SIZE(rules->stub); | |
3563 | } | |
3564 | ||
3565 | void | |
3566 | rule_collection_add(struct rule_collection *rules, struct rule *rule) | |
3567 | { | |
3568 | if (rules->n >= rules->capacity) { | |
3569 | size_t old_size, new_size; | |
3570 | ||
3571 | old_size = rules->capacity * sizeof *rules->rules; | |
3572 | rules->capacity *= 2; | |
3573 | new_size = rules->capacity * sizeof *rules->rules; | |
3574 | ||
3575 | if (rules->rules == rules->stub) { | |
3576 | rules->rules = xmalloc(new_size); | |
3577 | memcpy(rules->rules, rules->stub, old_size); | |
3578 | } else { | |
3579 | rules->rules = xrealloc(rules->rules, new_size); | |
3580 | } | |
3581 | } | |
3582 | ||
3583 | rules->rules[rules->n++] = rule; | |
3584 | } | |
3585 | ||
15aaf599 BP |
3586 | void |
3587 | rule_collection_ref(struct rule_collection *rules) | |
3588 | OVS_REQUIRES(ofproto_mutex) | |
3589 | { | |
3590 | size_t i; | |
3591 | ||
3592 | for (i = 0; i < rules->n; i++) { | |
3593 | ofproto_rule_ref(rules->rules[i]); | |
3594 | } | |
3595 | } | |
3596 | ||
3597 | void | |
3598 | rule_collection_unref(struct rule_collection *rules) | |
3599 | { | |
3600 | size_t i; | |
3601 | ||
3602 | for (i = 0; i < rules->n; i++) { | |
3603 | ofproto_rule_unref(rules->rules[i]); | |
3604 | } | |
3605 | } | |
3606 | ||
a8e547c1 BP |
3607 | void |
3608 | rule_collection_destroy(struct rule_collection *rules) | |
3609 | { | |
3610 | if (rules->rules != rules->stub) { | |
3611 | free(rules->rules); | |
3612 | } | |
bfd3dbf6 BP |
3613 | |
3614 | /* Make repeated destruction harmless. */ | |
3615 | rule_collection_init(rules); | |
a8e547c1 BP |
3616 | } |
3617 | ||
dd51dae2 BP |
3618 | /* Checks whether 'rule' matches 'c' and, if so, adds it to 'rules'. This |
3619 | * function verifies most of the criteria in 'c' itself, but the caller must | |
3620 | * check 'c->cr' itself. | |
3621 | * | |
3622 | * Increments '*n_readonly' if 'rule' wasn't added because it's read-only (and | |
b20f4073 BP |
3623 | * 'c' only includes modifiable rules). */ |
3624 | static void | |
a9b22b7f | 3625 | collect_rule(struct rule *rule, const struct rule_criteria *c, |
dd51dae2 | 3626 | struct rule_collection *rules, size_t *n_readonly) |
15aaf599 | 3627 | OVS_REQUIRES(ofproto_mutex) |
6c1d7642 | 3628 | { |
dd51dae2 BP |
3629 | if ((c->table_id == rule->table_id || c->table_id == 0xff) |
3630 | && ofproto_rule_has_out_port(rule, c->out_port) | |
3631 | && ofproto_rule_has_out_group(rule, c->out_group) | |
3632 | && !((rule->flow_cookie ^ c->cookie) & c->cookie_mask) | |
3633 | && (!rule_is_hidden(rule) || c->include_hidden)) { | |
dd51dae2 | 3634 | /* Rule matches all the criteria... */ |
834fe5cb | 3635 | if (!rule_is_readonly(rule) || c->include_readonly) { |
dd51dae2 | 3636 | /* ...add it. */ |
a8e547c1 | 3637 | rule_collection_add(rules, rule); |
dd51dae2 BP |
3638 | } else { |
3639 | /* ...except it's read-only. */ | |
3640 | ++*n_readonly; | |
6c1d7642 | 3641 | } |
6c1d7642 BP |
3642 | } |
3643 | } | |
3644 | ||
a9b22b7f BP |
3645 | /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches |
3646 | * on classifiers rules are done in the "loose" way required for OpenFlow | |
3647 | * OFPFC_MODIFY and OFPFC_DELETE requests. Puts the selected rules on list | |
9ed18e46 BP |
3648 | * 'rules'. |
3649 | * | |
9ed18e46 | 3650 | * Returns 0 on success, otherwise an OpenFlow error code. */ |
90bf1e07 | 3651 | static enum ofperr |
a9b22b7f | 3652 | collect_rules_loose(struct ofproto *ofproto, |
a8e547c1 BP |
3653 | const struct rule_criteria *criteria, |
3654 | struct rule_collection *rules) | |
15aaf599 | 3655 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 3656 | { |
d0918789 | 3657 | struct oftable *table; |
554764d1 | 3658 | enum ofperr error = 0; |
dd51dae2 | 3659 | size_t n_readonly = 0; |
48266274 | 3660 | |
a8e547c1 BP |
3661 | rule_collection_init(rules); |
3662 | ||
554764d1 SH |
3663 | if (!check_table_id(ofproto, criteria->table_id)) { |
3664 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
a8e547c1 | 3665 | goto exit; |
48266274 | 3666 | } |
9ed18e46 | 3667 | |
b8266395 | 3668 | if (criteria->cookie_mask == OVS_BE64_MAX) { |
98eaac36 JR |
3669 | struct rule *rule; |
3670 | ||
a9b22b7f BP |
3671 | HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node, |
3672 | hash_cookie(criteria->cookie), | |
98eaac36 | 3673 | &ofproto->cookies) { |
a9b22b7f | 3674 | if (cls_rule_is_loose_match(&rule->cr, &criteria->cr.match)) { |
b20f4073 | 3675 | collect_rule(rule, criteria, rules, &n_readonly); |
98eaac36 JR |
3676 | } |
3677 | } | |
6c1d7642 | 3678 | } else { |
a9b22b7f | 3679 | FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) { |
6c1d7642 | 3680 | struct rule *rule; |
9ed18e46 | 3681 | |
5f0476ce | 3682 | CLS_FOR_EACH_TARGET (rule, cr, &table->cls, &criteria->cr) { |
b20f4073 | 3683 | collect_rule(rule, criteria, rules, &n_readonly); |
9ed18e46 BP |
3684 | } |
3685 | } | |
3686 | } | |
48d28ac1 | 3687 | |
a8e547c1 | 3688 | exit: |
dd51dae2 BP |
3689 | if (!error && !rules->n && n_readonly) { |
3690 | /* We didn't find any rules to modify. We did find some read-only | |
3691 | * rules that we're not allowed to modify, so report that. */ | |
3692 | error = OFPERR_OFPBRC_EPERM; | |
3693 | } | |
a8e547c1 BP |
3694 | if (error) { |
3695 | rule_collection_destroy(rules); | |
3696 | } | |
48d28ac1 | 3697 | return error; |
9ed18e46 BP |
3698 | } |
3699 | ||
a9b22b7f BP |
3700 | /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches |
3701 | * on classifiers rules are done in the "strict" way required for OpenFlow | |
3702 | * OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests. Puts the selected | |
3703 | * rules on list 'rules'. | |
9ed18e46 | 3704 | * |
9ed18e46 | 3705 | * Returns 0 on success, otherwise an OpenFlow error code. */ |
90bf1e07 | 3706 | static enum ofperr |
a9b22b7f | 3707 | collect_rules_strict(struct ofproto *ofproto, |
a8e547c1 BP |
3708 | const struct rule_criteria *criteria, |
3709 | struct rule_collection *rules) | |
15aaf599 | 3710 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 3711 | { |
d0918789 | 3712 | struct oftable *table; |
dd51dae2 | 3713 | size_t n_readonly = 0; |
554764d1 | 3714 | int error = 0; |
48266274 | 3715 | |
a8e547c1 BP |
3716 | rule_collection_init(rules); |
3717 | ||
554764d1 SH |
3718 | if (!check_table_id(ofproto, criteria->table_id)) { |
3719 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
a8e547c1 | 3720 | goto exit; |
48266274 | 3721 | } |
9ed18e46 | 3722 | |
b8266395 | 3723 | if (criteria->cookie_mask == OVS_BE64_MAX) { |
98eaac36 JR |
3724 | struct rule *rule; |
3725 | ||
a9b22b7f BP |
3726 | HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node, |
3727 | hash_cookie(criteria->cookie), | |
98eaac36 | 3728 | &ofproto->cookies) { |
a9b22b7f | 3729 | if (cls_rule_equal(&rule->cr, &criteria->cr)) { |
b20f4073 | 3730 | collect_rule(rule, criteria, rules, &n_readonly); |
98eaac36 JR |
3731 | } |
3732 | } | |
6c1d7642 | 3733 | } else { |
a9b22b7f | 3734 | FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) { |
6c1d7642 | 3735 | struct rule *rule; |
9ed18e46 | 3736 | |
a9b22b7f BP |
3737 | rule = rule_from_cls_rule(classifier_find_rule_exactly( |
3738 | &table->cls, &criteria->cr)); | |
6c1d7642 | 3739 | if (rule) { |
b20f4073 | 3740 | collect_rule(rule, criteria, rules, &n_readonly); |
9ed18e46 BP |
3741 | } |
3742 | } | |
3743 | } | |
48d28ac1 | 3744 | |
a8e547c1 | 3745 | exit: |
b20f4073 BP |
3746 | if (!error && !rules->n && n_readonly) { |
3747 | /* We didn't find any rules to modify. We did find some read-only | |
3748 | * rules that we're not allowed to modify, so report that. */ | |
3749 | error = OFPERR_OFPBRC_EPERM; | |
3750 | } | |
a8e547c1 BP |
3751 | if (error) { |
3752 | rule_collection_destroy(rules); | |
3753 | } | |
6c1d7642 | 3754 | return error; |
9ed18e46 BP |
3755 | } |
3756 | ||
f27f2134 BP |
3757 | /* Returns 'age_ms' (a duration in milliseconds), converted to seconds and |
3758 | * forced into the range of a uint16_t. */ | |
3759 | static int | |
3760 | age_secs(long long int age_ms) | |
3761 | { | |
3762 | return (age_ms < 0 ? 0 | |
3763 | : age_ms >= UINT16_MAX * 1000 ? UINT16_MAX | |
3764 | : (unsigned int) age_ms / 1000); | |
3765 | } | |
3766 | ||
90bf1e07 | 3767 | static enum ofperr |
63f2140a | 3768 | handle_flow_stats_request(struct ofconn *ofconn, |
982697a4 | 3769 | const struct ofp_header *request) |
15aaf599 | 3770 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 3771 | { |
64ff1d96 | 3772 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 3773 | struct ofputil_flow_stats_request fsr; |
a9b22b7f | 3774 | struct rule_criteria criteria; |
a8e547c1 | 3775 | struct rule_collection rules; |
63f2140a | 3776 | struct list replies; |
90bf1e07 | 3777 | enum ofperr error; |
a8e547c1 | 3778 | size_t i; |
09246b99 | 3779 | |
982697a4 | 3780 | error = ofputil_decode_flow_stats_request(&fsr, request); |
09246b99 BP |
3781 | if (error) { |
3782 | return error; | |
3783 | } | |
3784 | ||
a9b22b7f BP |
3785 | rule_criteria_init(&criteria, fsr.table_id, &fsr.match, 0, fsr.cookie, |
3786 | fsr.cookie_mask, fsr.out_port, fsr.out_group); | |
15aaf599 BP |
3787 | |
3788 | ovs_mutex_lock(&ofproto_mutex); | |
a9b22b7f BP |
3789 | error = collect_rules_loose(ofproto, &criteria, &rules); |
3790 | rule_criteria_destroy(&criteria); | |
15aaf599 BP |
3791 | if (!error) { |
3792 | rule_collection_ref(&rules); | |
3793 | } | |
3794 | ovs_mutex_unlock(&ofproto_mutex); | |
3795 | ||
9ed18e46 BP |
3796 | if (error) { |
3797 | return error; | |
3798 | } | |
5ecc9d81 | 3799 | |
982697a4 | 3800 | ofpmp_init(&replies, request); |
a8e547c1 BP |
3801 | for (i = 0; i < rules.n; i++) { |
3802 | struct rule *rule = rules.rules[i]; | |
f27f2134 | 3803 | long long int now = time_msec(); |
9ed18e46 | 3804 | struct ofputil_flow_stats fs; |
15aaf599 | 3805 | long long int created, used, modified; |
dc723c44 | 3806 | const struct rule_actions *actions; |
15aaf599 | 3807 | enum ofputil_flow_mod_flags flags; |
a3779dbc | 3808 | |
d10976b7 | 3809 | ovs_mutex_lock(&rule->mutex); |
15aaf599 | 3810 | fs.cookie = rule->flow_cookie; |
a3779dbc EJ |
3811 | fs.idle_timeout = rule->idle_timeout; |
3812 | fs.hard_timeout = rule->hard_timeout; | |
15aaf599 | 3813 | created = rule->created; |
15aaf599 | 3814 | modified = rule->modified; |
06a0f3e2 | 3815 | actions = rule_get_actions(rule); |
15aaf599 | 3816 | flags = rule->flags; |
d10976b7 | 3817 | ovs_mutex_unlock(&rule->mutex); |
a3779dbc | 3818 | |
dc437090 JR |
3819 | ofproto->ofproto_class->rule_get_stats(rule, &fs.packet_count, |
3820 | &fs.byte_count, &used); | |
3821 | ||
15aaf599 BP |
3822 | minimatch_expand(&rule->cr.match, &fs.match); |
3823 | fs.table_id = rule->table_id; | |
3824 | calc_duration(created, now, &fs.duration_sec, &fs.duration_nsec); | |
3825 | fs.priority = rule->cr.priority; | |
3826 | fs.idle_age = age_secs(now - used); | |
3827 | fs.hard_age = age_secs(now - modified); | |
15aaf599 BP |
3828 | fs.ofpacts = actions->ofpacts; |
3829 | fs.ofpacts_len = actions->ofpacts_len; | |
3f517bcd | 3830 | |
15aaf599 | 3831 | fs.flags = flags; |
9ed18e46 | 3832 | ofputil_append_flow_stats_reply(&fs, &replies); |
3c4486a5 | 3833 | } |
15aaf599 BP |
3834 | |
3835 | rule_collection_unref(&rules); | |
a8e547c1 BP |
3836 | rule_collection_destroy(&rules); |
3837 | ||
63f2140a | 3838 | ofconn_send_replies(ofconn, &replies); |
5ecc9d81 | 3839 | |
09246b99 BP |
3840 | return 0; |
3841 | } | |
3842 | ||
4f2cad2c | 3843 | static void |
3394b5b6 | 3844 | flow_stats_ds(struct rule *rule, struct ds *results) |
4f2cad2c | 3845 | { |
4f2cad2c | 3846 | uint64_t packet_count, byte_count; |
dc723c44 | 3847 | const struct rule_actions *actions; |
dc437090 | 3848 | long long int created, used; |
4f2cad2c | 3849 | |
dc437090 JR |
3850 | rule->ofproto->ofproto_class->rule_get_stats(rule, &packet_count, |
3851 | &byte_count, &used); | |
4f2cad2c | 3852 | |
15aaf599 | 3853 | ovs_mutex_lock(&rule->mutex); |
06a0f3e2 | 3854 | actions = rule_get_actions(rule); |
15aaf599 BP |
3855 | created = rule->created; |
3856 | ovs_mutex_unlock(&rule->mutex); | |
3857 | ||
6c1491fb BP |
3858 | if (rule->table_id != 0) { |
3859 | ds_put_format(results, "table_id=%"PRIu8", ", rule->table_id); | |
3860 | } | |
15aaf599 | 3861 | ds_put_format(results, "duration=%llds, ", (time_msec() - created) / 1000); |
4f2cad2c JP |
3862 | ds_put_format(results, "n_packets=%"PRIu64", ", packet_count); |
3863 | ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count); | |
cb833cf6 | 3864 | cls_rule_format(&rule->cr, results); |
a5df0e72 | 3865 | ds_put_char(results, ','); |
15aaf599 | 3866 | |
455ecd77 | 3867 | ds_put_cstr(results, "actions="); |
15aaf599 BP |
3868 | ofpacts_format(actions->ofpacts, actions->ofpacts_len, results); |
3869 | ||
4f2cad2c JP |
3870 | ds_put_cstr(results, "\n"); |
3871 | } | |
3872 | ||
d295e8e9 | 3873 | /* Adds a pretty-printed description of all flows to 'results', including |
ee8b231c | 3874 | * hidden flows (e.g., set up by in-band control). */ |
4f2cad2c JP |
3875 | void |
3876 | ofproto_get_all_flows(struct ofproto *p, struct ds *results) | |
3877 | { | |
d0918789 | 3878 | struct oftable *table; |
6c1491fb | 3879 | |
d0918789 | 3880 | OFPROTO_FOR_EACH_TABLE (table, p) { |
6c1491fb | 3881 | struct rule *rule; |
064af421 | 3882 | |
5f0476ce | 3883 | CLS_FOR_EACH (rule, cr, &table->cls) { |
6c1491fb BP |
3884 | flow_stats_ds(rule, results); |
3885 | } | |
064af421 | 3886 | } |
064af421 BP |
3887 | } |
3888 | ||
b5827b24 BP |
3889 | /* Obtains the NetFlow engine type and engine ID for 'ofproto' into |
3890 | * '*engine_type' and '*engine_id', respectively. */ | |
3891 | void | |
3892 | ofproto_get_netflow_ids(const struct ofproto *ofproto, | |
3893 | uint8_t *engine_type, uint8_t *engine_id) | |
3894 | { | |
abe529af | 3895 | ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id); |
b5827b24 BP |
3896 | } |
3897 | ||
8f5514fe AW |
3898 | /* Checks the status change of CFM on 'ofport'. |
3899 | * | |
3900 | * Returns true if 'ofproto_class' does not support 'cfm_status_changed'. */ | |
3901 | bool | |
3902 | ofproto_port_cfm_status_changed(struct ofproto *ofproto, ofp_port_t ofp_port) | |
3903 | { | |
3904 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
3905 | return (ofport && ofproto->ofproto_class->cfm_status_changed | |
3906 | ? ofproto->ofproto_class->cfm_status_changed(ofport) | |
3907 | : true); | |
3908 | } | |
3909 | ||
88bf179a AW |
3910 | /* Checks the status of CFM configured on 'ofp_port' within 'ofproto'. |
3911 | * Returns 0 if the port's CFM status was successfully stored into | |
3912 | * '*status'. Returns positive errno if the port did not have CFM | |
8f5514fe | 3913 | * configured. |
9a9e3786 | 3914 | * |
88bf179a AW |
3915 | * The caller must provide and own '*status', and must free 'status->rmps'. |
3916 | * '*status' is indeterminate if the return value is non-zero. */ | |
3917 | int | |
4e022ec0 | 3918 | ofproto_port_get_cfm_status(const struct ofproto *ofproto, ofp_port_t ofp_port, |
685acfd9 | 3919 | struct cfm_status *status) |
3967a833 MM |
3920 | { |
3921 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
88bf179a AW |
3922 | return (ofport && ofproto->ofproto_class->get_cfm_status |
3923 | ? ofproto->ofproto_class->get_cfm_status(ofport, status) | |
3924 | : EOPNOTSUPP); | |
3967a833 MM |
3925 | } |
3926 | ||
90bf1e07 | 3927 | static enum ofperr |
76c93b22 | 3928 | handle_aggregate_stats_request(struct ofconn *ofconn, |
982697a4 | 3929 | const struct ofp_header *oh) |
15aaf599 | 3930 | OVS_EXCLUDED(ofproto_mutex) |
27d34fce | 3931 | { |
76c93b22 | 3932 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 3933 | struct ofputil_flow_stats_request request; |
76c93b22 | 3934 | struct ofputil_aggregate_stats stats; |
5e9d0469 | 3935 | bool unknown_packets, unknown_bytes; |
a9b22b7f | 3936 | struct rule_criteria criteria; |
a8e547c1 | 3937 | struct rule_collection rules; |
76c93b22 | 3938 | struct ofpbuf *reply; |
90bf1e07 | 3939 | enum ofperr error; |
a8e547c1 | 3940 | size_t i; |
27d34fce | 3941 | |
982697a4 | 3942 | error = ofputil_decode_flow_stats_request(&request, oh); |
76c93b22 BP |
3943 | if (error) { |
3944 | return error; | |
3945 | } | |
5ecc9d81 | 3946 | |
a9b22b7f BP |
3947 | rule_criteria_init(&criteria, request.table_id, &request.match, 0, |
3948 | request.cookie, request.cookie_mask, | |
3949 | request.out_port, request.out_group); | |
15aaf599 BP |
3950 | |
3951 | ovs_mutex_lock(&ofproto_mutex); | |
a9b22b7f BP |
3952 | error = collect_rules_loose(ofproto, &criteria, &rules); |
3953 | rule_criteria_destroy(&criteria); | |
15aaf599 BP |
3954 | if (!error) { |
3955 | rule_collection_ref(&rules); | |
3956 | } | |
3957 | ovs_mutex_unlock(&ofproto_mutex); | |
3958 | ||
9ed18e46 BP |
3959 | if (error) { |
3960 | return error; | |
3961 | } | |
3c4486a5 | 3962 | |
9ed18e46 | 3963 | memset(&stats, 0, sizeof stats); |
5e9d0469 | 3964 | unknown_packets = unknown_bytes = false; |
a8e547c1 BP |
3965 | for (i = 0; i < rules.n; i++) { |
3966 | struct rule *rule = rules.rules[i]; | |
9ed18e46 BP |
3967 | uint64_t packet_count; |
3968 | uint64_t byte_count; | |
dc437090 | 3969 | long long int used; |
5ecc9d81 | 3970 | |
9ed18e46 | 3971 | ofproto->ofproto_class->rule_get_stats(rule, &packet_count, |
dc437090 | 3972 | &byte_count, &used); |
5ecc9d81 | 3973 | |
5e9d0469 BP |
3974 | if (packet_count == UINT64_MAX) { |
3975 | unknown_packets = true; | |
3976 | } else { | |
3977 | stats.packet_count += packet_count; | |
3978 | } | |
3979 | ||
3980 | if (byte_count == UINT64_MAX) { | |
3981 | unknown_bytes = true; | |
3982 | } else { | |
3983 | stats.byte_count += byte_count; | |
3984 | } | |
3985 | ||
9ed18e46 | 3986 | stats.flow_count++; |
3c4486a5 | 3987 | } |
5e9d0469 BP |
3988 | if (unknown_packets) { |
3989 | stats.packet_count = UINT64_MAX; | |
3990 | } | |
3991 | if (unknown_bytes) { | |
3992 | stats.byte_count = UINT64_MAX; | |
3993 | } | |
27d34fce | 3994 | |
15aaf599 | 3995 | rule_collection_unref(&rules); |
a8e547c1 BP |
3996 | rule_collection_destroy(&rules); |
3997 | ||
982697a4 | 3998 | reply = ofputil_encode_aggregate_stats_reply(&stats, oh); |
76c93b22 | 3999 | ofconn_send_reply(ofconn, reply); |
09246b99 BP |
4000 | |
4001 | return 0; | |
4002 | } | |
4003 | ||
c1c9c9c4 | 4004 | struct queue_stats_cbdata { |
ca0f572c | 4005 | struct ofport *ofport; |
63f2140a | 4006 | struct list replies; |
6dc34a0d | 4007 | long long int now; |
c1c9c9c4 BP |
4008 | }; |
4009 | ||
4010 | static void | |
db9220c3 | 4011 | put_queue_stats(struct queue_stats_cbdata *cbdata, uint32_t queue_id, |
c1c9c9c4 BP |
4012 | const struct netdev_queue_stats *stats) |
4013 | { | |
6dc34a0d | 4014 | struct ofputil_queue_stats oqs; |
c1c9c9c4 | 4015 | |
6dc34a0d BP |
4016 | oqs.port_no = cbdata->ofport->pp.port_no; |
4017 | oqs.queue_id = queue_id; | |
4018 | oqs.tx_bytes = stats->tx_bytes; | |
4019 | oqs.tx_packets = stats->tx_packets; | |
4020 | oqs.tx_errors = stats->tx_errors; | |
4021 | if (stats->created != LLONG_MIN) { | |
4022 | calc_duration(stats->created, cbdata->now, | |
4023 | &oqs.duration_sec, &oqs.duration_nsec); | |
4024 | } else { | |
4025 | oqs.duration_sec = oqs.duration_nsec = UINT32_MAX; | |
4026 | } | |
64626975 | 4027 | ofputil_append_queue_stat(&cbdata->replies, &oqs); |
c1c9c9c4 BP |
4028 | } |
4029 | ||
4030 | static void | |
db9220c3 | 4031 | handle_queue_stats_dump_cb(uint32_t queue_id, |
c1c9c9c4 BP |
4032 | struct netdev_queue_stats *stats, |
4033 | void *cbdata_) | |
4034 | { | |
4035 | struct queue_stats_cbdata *cbdata = cbdata_; | |
4036 | ||
4037 | put_queue_stats(cbdata, queue_id, stats); | |
4038 | } | |
4039 | ||
0414d158 | 4040 | static enum ofperr |
ca0f572c | 4041 | handle_queue_stats_for_port(struct ofport *port, uint32_t queue_id, |
c1c9c9c4 BP |
4042 | struct queue_stats_cbdata *cbdata) |
4043 | { | |
ca0f572c | 4044 | cbdata->ofport = port; |
c1c9c9c4 BP |
4045 | if (queue_id == OFPQ_ALL) { |
4046 | netdev_dump_queue_stats(port->netdev, | |
4047 | handle_queue_stats_dump_cb, cbdata); | |
4048 | } else { | |
4049 | struct netdev_queue_stats stats; | |
4050 | ||
1ac788f6 BP |
4051 | if (!netdev_get_queue_stats(port->netdev, queue_id, &stats)) { |
4052 | put_queue_stats(cbdata, queue_id, &stats); | |
0414d158 BP |
4053 | } else { |
4054 | return OFPERR_OFPQOFC_BAD_QUEUE; | |
1ac788f6 | 4055 | } |
c1c9c9c4 | 4056 | } |
0414d158 | 4057 | return 0; |
c1c9c9c4 BP |
4058 | } |
4059 | ||
90bf1e07 | 4060 | static enum ofperr |
63f2140a | 4061 | handle_queue_stats_request(struct ofconn *ofconn, |
982697a4 | 4062 | const struct ofp_header *rq) |
c1c9c9c4 | 4063 | { |
64ff1d96 | 4064 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
c1c9c9c4 | 4065 | struct queue_stats_cbdata cbdata; |
0414d158 | 4066 | struct ofport *port; |
0414d158 | 4067 | enum ofperr error; |
64626975 | 4068 | struct ofputil_queue_stats_request oqsr; |
c1c9c9c4 | 4069 | |
c1c9c9c4 BP |
4070 | COVERAGE_INC(ofproto_queue_req); |
4071 | ||
982697a4 | 4072 | ofpmp_init(&cbdata.replies, rq); |
6dc34a0d | 4073 | cbdata.now = time_msec(); |
c1c9c9c4 | 4074 | |
64626975 SH |
4075 | error = ofputil_decode_queue_stats_request(rq, &oqsr); |
4076 | if (error) { | |
4077 | return error; | |
4078 | } | |
4079 | ||
7f05e7ab | 4080 | if (oqsr.port_no == OFPP_ANY) { |
0414d158 | 4081 | error = OFPERR_OFPQOFC_BAD_QUEUE; |
4e8e4213 | 4082 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
64626975 | 4083 | if (!handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata)) { |
0414d158 BP |
4084 | error = 0; |
4085 | } | |
c1c9c9c4 | 4086 | } |
0414d158 | 4087 | } else { |
64626975 | 4088 | port = ofproto_get_port(ofproto, oqsr.port_no); |
0414d158 | 4089 | error = (port |
64626975 | 4090 | ? handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata) |
0414d158 BP |
4091 | : OFPERR_OFPQOFC_BAD_PORT); |
4092 | } | |
4093 | if (!error) { | |
4094 | ofconn_send_replies(ofconn, &cbdata.replies); | |
c1c9c9c4 | 4095 | } else { |
63f2140a | 4096 | ofpbuf_list_delete(&cbdata.replies); |
c1c9c9c4 | 4097 | } |
c1c9c9c4 | 4098 | |
0414d158 | 4099 | return error; |
c1c9c9c4 | 4100 | } |
7ee20df1 | 4101 | |
2e31a9b8 BP |
4102 | static bool |
4103 | should_evict_a_rule(struct oftable *table, unsigned int extra_space) | |
15aaf599 BP |
4104 | OVS_REQUIRES(ofproto_mutex) |
4105 | OVS_NO_THREAD_SAFETY_ANALYSIS | |
8037acb4 | 4106 | { |
15aaf599 | 4107 | return classifier_count(&table->cls) + extra_space > table->max_flows; |
2e31a9b8 | 4108 | } |
8037acb4 | 4109 | |
2e31a9b8 | 4110 | static enum ofperr |
834fe5cb | 4111 | evict_rules_from_table(struct oftable *table, unsigned int extra_space) |
15aaf599 | 4112 | OVS_REQUIRES(ofproto_mutex) |
2e31a9b8 BP |
4113 | { |
4114 | while (should_evict_a_rule(table, extra_space)) { | |
4115 | struct rule *rule; | |
8037acb4 | 4116 | |
2e31a9b8 BP |
4117 | if (!choose_rule_to_evict(table, &rule)) { |
4118 | return OFPERR_OFPFMFC_TABLE_FULL; | |
2e31a9b8 | 4119 | } else { |
834fe5cb | 4120 | ofproto_rule_delete__(rule, OFPRR_EVICTION); |
2e31a9b8 | 4121 | } |
8037acb4 | 4122 | } |
2e31a9b8 BP |
4123 | |
4124 | return 0; | |
8037acb4 BP |
4125 | } |
4126 | ||
79eee1eb BP |
4127 | /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT |
4128 | * in which no matching flow already exists in the flow table. | |
4129 | * | |
4130 | * Adds the flow specified by 'ofm', which is followed by 'n_actions' | |
75a75043 | 4131 | * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow |
90bf1e07 BP |
4132 | * error code on failure, or OFPROTO_POSTPONE if the operation cannot be |
4133 | * initiated now but may be retried later. | |
79eee1eb | 4134 | * |
2509616e | 4135 | * The caller retains ownership of 'fm->ofpacts'. |
f25d0cf3 | 4136 | * |
79eee1eb BP |
4137 | * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id, |
4138 | * if any. */ | |
90bf1e07 | 4139 | static enum ofperr |
baae3d02 BP |
4140 | add_flow(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4141 | const struct flow_mod_requester *req) | |
15aaf599 | 4142 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 4143 | { |
062fea06 | 4144 | const struct rule_actions *actions; |
d0918789 | 4145 | struct oftable *table; |
8037acb4 | 4146 | struct cls_rule cr; |
064af421 | 4147 | struct rule *rule; |
5a361239 | 4148 | uint8_t table_id; |
554764d1 | 4149 | int error = 0; |
064af421 | 4150 | |
554764d1 SH |
4151 | if (!check_table_id(ofproto, fm->table_id)) { |
4152 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
48266274 BP |
4153 | return error; |
4154 | } | |
4155 | ||
7ee20df1 BP |
4156 | /* Pick table. */ |
4157 | if (fm->table_id == 0xff) { | |
13521ff5 | 4158 | if (ofproto->ofproto_class->rule_choose_table) { |
81a76618 BP |
4159 | error = ofproto->ofproto_class->rule_choose_table(ofproto, |
4160 | &fm->match, | |
7ee20df1 BP |
4161 | &table_id); |
4162 | if (error) { | |
4163 | return error; | |
4164 | } | |
cb22974d | 4165 | ovs_assert(table_id < ofproto->n_tables); |
7ee20df1 | 4166 | } else { |
5a361239 | 4167 | table_id = 0; |
7ee20df1 BP |
4168 | } |
4169 | } else if (fm->table_id < ofproto->n_tables) { | |
5a361239 | 4170 | table_id = fm->table_id; |
7ee20df1 | 4171 | } else { |
c22c56bd | 4172 | return OFPERR_OFPBRC_BAD_TABLE_ID; |
064af421 BP |
4173 | } |
4174 | ||
5a361239 | 4175 | table = &ofproto->tables[table_id]; |
834fe5cb BP |
4176 | if (table->flags & OFTABLE_READONLY |
4177 | && !(fm->flags & OFPUTIL_FF_NO_READONLY)) { | |
5c67e4af BP |
4178 | return OFPERR_OFPBRC_EPERM; |
4179 | } | |
4180 | ||
adcf00ba AZ |
4181 | if (!(fm->flags & OFPUTIL_FF_HIDDEN_FIELDS)) { |
4182 | if (!match_has_default_hidden_fields(&fm->match)) { | |
4183 | VLOG_WARN_RL(&rl, "%s: (add_flow) only internal flows can set " | |
4184 | "non-default values to hidden fields", ofproto->name); | |
4185 | return OFPERR_OFPBRC_EPERM; | |
4186 | } | |
4187 | } | |
4188 | ||
8037acb4 BP |
4189 | cls_rule_init(&cr, &fm->match, fm->priority); |
4190 | ||
b277c7cc | 4191 | /* Transform "add" into "modify" if there's an existing identical flow. */ |
8037acb4 | 4192 | rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls, &cr)); |
b277c7cc | 4193 | if (rule) { |
834fe5cb BP |
4194 | struct rule_collection rules; |
4195 | ||
8037acb4 | 4196 | cls_rule_destroy(&cr); |
b277c7cc | 4197 | |
834fe5cb BP |
4198 | rule_collection_init(&rules); |
4199 | rule_collection_add(&rules, rule); | |
4200 | fm->modify_cookie = true; | |
4201 | error = modify_flows__(ofproto, fm, &rules, req); | |
4202 | rule_collection_destroy(&rules); | |
a8e547c1 | 4203 | |
834fe5cb | 4204 | return error; |
b277c7cc BP |
4205 | } |
4206 | ||
81a76618 | 4207 | /* Check for overlap, if requested. */ |
0fb88c18 | 4208 | if (fm->flags & OFPUTIL_FF_CHECK_OVERLAP) { |
afae68b1 | 4209 | if (classifier_rule_overlaps(&table->cls, &cr)) { |
8037acb4 | 4210 | cls_rule_destroy(&cr); |
c09f755d BP |
4211 | return OFPERR_OFPFMFC_OVERLAP; |
4212 | } | |
7ee20df1 | 4213 | } |
81a76618 | 4214 | |
8037acb4 | 4215 | /* If necessary, evict an existing rule to clear out space. */ |
834fe5cb | 4216 | error = evict_rules_from_table(table, 1); |
8037acb4 BP |
4217 | if (error) { |
4218 | cls_rule_destroy(&cr); | |
4219 | return error; | |
4220 | } | |
2e1ae200 | 4221 | |
8037acb4 BP |
4222 | /* Allocate new rule. */ |
4223 | rule = ofproto->ofproto_class->rule_alloc(); | |
4224 | if (!rule) { | |
4225 | cls_rule_destroy(&cr); | |
4226 | VLOG_WARN_RL(&rl, "%s: failed to create rule (%s)", | |
4227 | ofproto->name, ovs_strerror(error)); | |
4228 | return ENOMEM; | |
4229 | } | |
4230 | ||
4231 | /* Initialize base state. */ | |
49a0e0eb BP |
4232 | *CONST_CAST(struct ofproto **, &rule->ofproto) = ofproto; |
4233 | cls_rule_move(CONST_CAST(struct cls_rule *, &rule->cr), &cr); | |
37bec3d3 | 4234 | ovs_refcount_init(&rule->ref_count); |
623e1caf | 4235 | rule->flow_cookie = fm->new_cookie; |
dc437090 | 4236 | rule->created = rule->modified = time_msec(); |
a3779dbc | 4237 | |
d10976b7 BP |
4238 | ovs_mutex_init(&rule->mutex); |
4239 | ovs_mutex_lock(&rule->mutex); | |
7ee20df1 BP |
4240 | rule->idle_timeout = fm->idle_timeout; |
4241 | rule->hard_timeout = fm->hard_timeout; | |
d10976b7 | 4242 | ovs_mutex_unlock(&rule->mutex); |
a3779dbc | 4243 | |
49a0e0eb | 4244 | *CONST_CAST(uint8_t *, &rule->table_id) = table - ofproto->tables; |
3f517bcd | 4245 | rule->flags = fm->flags & OFPUTIL_FF_STATE; |
4c7562c5 | 4246 | actions = rule_actions_create(fm->ofpacts, fm->ofpacts_len); |
062fea06 | 4247 | ovsrcu_set(&rule->actions, actions); |
9cae45dc | 4248 | list_init(&rule->meter_list_node); |
254750ce | 4249 | rule->eviction_group = NULL; |
e503cc19 | 4250 | list_init(&rule->expirable); |
2b07c8b1 BP |
4251 | rule->monitor_flags = 0; |
4252 | rule->add_seqno = 0; | |
4253 | rule->modify_seqno = 0; | |
7ee20df1 | 4254 | |
8037acb4 | 4255 | /* Construct rule, initializing derived state. */ |
b277c7cc BP |
4256 | error = ofproto->ofproto_class->rule_construct(rule); |
4257 | if (error) { | |
8037acb4 BP |
4258 | ofproto_rule_destroy__(rule); |
4259 | return error; | |
064af421 | 4260 | } |
8037acb4 | 4261 | |
062fea06 BP |
4262 | if (fm->hard_timeout || fm->idle_timeout) { |
4263 | list_insert(&ofproto->expirable, &rule->expirable); | |
4264 | } | |
4265 | cookies_insert(ofproto, rule); | |
4266 | eviction_group_add_rule(rule); | |
4c7562c5 | 4267 | if (actions->has_meter) { |
062fea06 BP |
4268 | meter_insert_rule(rule); |
4269 | } | |
1ebeaaa7 | 4270 | |
062fea06 | 4271 | classifier_insert(&table->cls, CONST_CAST(struct cls_rule *, &rule->cr)); |
8037acb4 | 4272 | |
b20f4073 | 4273 | error = ofproto->ofproto_class->rule_insert(rule); |
834fe5cb BP |
4274 | if (error) { |
4275 | oftable_remove_rule(rule); | |
4276 | ofproto_rule_unref(rule); | |
4277 | return error; | |
4278 | } | |
35f48b8b | 4279 | learned_cookies_inc(ofproto, actions); |
062fea06 | 4280 | |
834fe5cb BP |
4281 | if (minimask_get_vid_mask(&rule->cr.match.mask) == VLAN_VID_MASK) { |
4282 | if (ofproto->vlan_bitmap) { | |
4283 | uint16_t vid = miniflow_get_vid(&rule->cr.match.flow); | |
4284 | if (!bitmap_is_set(ofproto->vlan_bitmap, vid)) { | |
4285 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
4286 | ofproto->vlans_changed = true; | |
4287 | } | |
4288 | } else { | |
4289 | ofproto->vlans_changed = true; | |
4290 | } | |
4291 | } | |
4292 | ||
4293 | ofmonitor_report(ofproto->connmgr, rule, NXFME_ADDED, 0, | |
cdbdeeda | 4294 | req ? req->ofconn : NULL, req ? req->xid : 0, NULL); |
834fe5cb BP |
4295 | |
4296 | return req ? send_buffered_packet(req->ofconn, fm->buffer_id, rule) : 0; | |
064af421 | 4297 | } |
79eee1eb BP |
4298 | \f |
4299 | /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */ | |
064af421 | 4300 | |
9ed18e46 BP |
4301 | /* Modifies the rules listed in 'rules', changing their actions to match those |
4302 | * in 'fm'. | |
79eee1eb | 4303 | * |
9ed18e46 BP |
4304 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, |
4305 | * if any. | |
4306 | * | |
4307 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 4308 | static enum ofperr |
baae3d02 BP |
4309 | modify_flows__(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4310 | const struct rule_collection *rules, | |
4311 | const struct flow_mod_requester *req) | |
15aaf599 | 4312 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4313 | { |
35f48b8b | 4314 | struct list dead_cookies = LIST_INITIALIZER(&dead_cookies); |
834fe5cb | 4315 | enum nx_flow_update_event event; |
a8e547c1 | 4316 | size_t i; |
79eee1eb | 4317 | |
af822017 BP |
4318 | if (ofproto->ofproto_class->rule_premodify_actions) { |
4319 | for (i = 0; i < rules->n; i++) { | |
4320 | struct rule *rule = rules->rules[i]; | |
cb220b39 | 4321 | enum ofperr error; |
af822017 | 4322 | |
dd51dae2 BP |
4323 | error = ofproto->ofproto_class->rule_premodify_actions( |
4324 | rule, fm->ofpacts, fm->ofpacts_len); | |
4325 | if (error) { | |
4326 | return error; | |
af822017 BP |
4327 | } |
4328 | } | |
4329 | } | |
4330 | ||
834fe5cb | 4331 | event = fm->command == OFPFC_ADD ? NXFME_ADDED : NXFME_MODIFIED; |
a8e547c1 BP |
4332 | for (i = 0; i < rules->n; i++) { |
4333 | struct rule *rule = rules->rules[i]; | |
08043761 | 4334 | |
834fe5cb BP |
4335 | /* 'fm' says that */ |
4336 | bool change_cookie = (fm->modify_cookie | |
4337 | && fm->new_cookie != OVS_BE64_MAX | |
4338 | && fm->new_cookie != rule->flow_cookie); | |
2e1ae200 | 4339 | |
834fe5cb BP |
4340 | const struct rule_actions *actions = rule_get_actions(rule); |
4341 | bool change_actions = !ofpacts_equal(fm->ofpacts, fm->ofpacts_len, | |
4342 | actions->ofpacts, | |
4343 | actions->ofpacts_len); | |
5c67e4af | 4344 | |
834fe5cb | 4345 | bool reset_counters = (fm->flags & OFPUTIL_FF_RESET_COUNTS) != 0; |
a7d94793 | 4346 | |
834fe5cb BP |
4347 | long long int now = time_msec(); |
4348 | ||
834fe5cb BP |
4349 | if (change_cookie) { |
4350 | cookies_remove(ofproto, rule); | |
98eaac36 | 4351 | } |
834fe5cb BP |
4352 | |
4353 | ovs_mutex_lock(&rule->mutex); | |
4354 | if (fm->command == OFPFC_ADD) { | |
b277c7cc BP |
4355 | rule->idle_timeout = fm->idle_timeout; |
4356 | rule->hard_timeout = fm->hard_timeout; | |
3f517bcd | 4357 | rule->flags = fm->flags & OFPUTIL_FF_STATE; |
834fe5cb BP |
4358 | rule->created = now; |
4359 | } | |
4360 | if (change_cookie) { | |
4361 | rule->flow_cookie = fm->new_cookie; | |
4362 | } | |
4363 | rule->modified = now; | |
4364 | ovs_mutex_unlock(&rule->mutex); | |
4365 | ||
4366 | if (change_cookie) { | |
4367 | cookies_insert(ofproto, rule); | |
4368 | } | |
4369 | if (fm->command == OFPFC_ADD) { | |
b277c7cc BP |
4370 | if (fm->idle_timeout || fm->hard_timeout) { |
4371 | if (!rule->eviction_group) { | |
4372 | eviction_group_add_rule(rule); | |
4373 | } | |
4374 | } else { | |
4375 | eviction_group_remove_rule(rule); | |
4376 | } | |
4377 | } | |
4378 | ||
834fe5cb | 4379 | if (change_actions) { |
4c7562c5 | 4380 | ovsrcu_set(&rule->actions, rule_actions_create(fm->ofpacts, |
834fe5cb | 4381 | fm->ofpacts_len)); |
834fe5cb | 4382 | } |
884e1dc4 | 4383 | |
834fe5cb | 4384 | if (change_actions || reset_counters) { |
af822017 | 4385 | ofproto->ofproto_class->rule_modify_actions(rule, reset_counters); |
623e1caf | 4386 | } |
834fe5cb BP |
4387 | |
4388 | if (event != NXFME_MODIFIED || change_actions || change_cookie) { | |
4389 | ofmonitor_report(ofproto->connmgr, rule, event, 0, | |
cdbdeeda SH |
4390 | req ? req->ofconn : NULL, req ? req->xid : 0, |
4391 | change_actions ? actions : NULL); | |
834fe5cb | 4392 | } |
35f48b8b BP |
4393 | |
4394 | if (change_actions) { | |
4395 | learned_cookies_inc(ofproto, rule_get_actions(rule)); | |
4396 | learned_cookies_dec(ofproto, actions, &dead_cookies); | |
cdbdeeda | 4397 | rule_actions_destroy(actions); |
35f48b8b | 4398 | } |
834fe5cb | 4399 | } |
35f48b8b | 4400 | learned_cookies_flush(ofproto, &dead_cookies); |
834fe5cb BP |
4401 | |
4402 | if (fm->buffer_id != UINT32_MAX && req) { | |
cb220b39 SH |
4403 | return send_buffered_packet(req->ofconn, fm->buffer_id, |
4404 | rules->rules[0]); | |
5ecc9d81 | 4405 | } |
79eee1eb | 4406 | |
cb220b39 | 4407 | return 0; |
9ed18e46 BP |
4408 | } |
4409 | ||
9387b970 | 4410 | static enum ofperr |
baae3d02 BP |
4411 | modify_flows_add(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4412 | const struct flow_mod_requester *req) | |
15aaf599 | 4413 | OVS_REQUIRES(ofproto_mutex) |
9387b970 | 4414 | { |
b8266395 | 4415 | if (fm->cookie_mask != htonll(0) || fm->new_cookie == OVS_BE64_MAX) { |
9387b970 SH |
4416 | return 0; |
4417 | } | |
baae3d02 | 4418 | return add_flow(ofproto, fm, req); |
9387b970 SH |
4419 | } |
4420 | ||
90bf1e07 BP |
4421 | /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on |
4422 | * failure. | |
9ed18e46 BP |
4423 | * |
4424 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, | |
4425 | * if any. */ | |
90bf1e07 | 4426 | static enum ofperr |
baae3d02 BP |
4427 | modify_flows_loose(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4428 | const struct flow_mod_requester *req) | |
15aaf599 | 4429 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 4430 | { |
a9b22b7f | 4431 | struct rule_criteria criteria; |
a8e547c1 | 4432 | struct rule_collection rules; |
9ed18e46 BP |
4433 | int error; |
4434 | ||
a9b22b7f BP |
4435 | rule_criteria_init(&criteria, fm->table_id, &fm->match, 0, |
4436 | fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG11_ANY); | |
dd51dae2 BP |
4437 | rule_criteria_require_rw(&criteria, |
4438 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
a9b22b7f BP |
4439 | error = collect_rules_loose(ofproto, &criteria, &rules); |
4440 | rule_criteria_destroy(&criteria); | |
4441 | ||
a8e547c1 BP |
4442 | if (!error) { |
4443 | error = (rules.n > 0 | |
baae3d02 BP |
4444 | ? modify_flows__(ofproto, fm, &rules, req) |
4445 | : modify_flows_add(ofproto, fm, req)); | |
623e1caf | 4446 | } |
a8e547c1 BP |
4447 | |
4448 | rule_collection_destroy(&rules); | |
4449 | ||
4450 | return error; | |
79eee1eb BP |
4451 | } |
4452 | ||
4453 | /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error | |
baae3d02 | 4454 | * code on failure. */ |
90bf1e07 | 4455 | static enum ofperr |
baae3d02 BP |
4456 | modify_flow_strict(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4457 | const struct flow_mod_requester *req) | |
15aaf599 | 4458 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4459 | { |
a9b22b7f | 4460 | struct rule_criteria criteria; |
a8e547c1 | 4461 | struct rule_collection rules; |
6c1491fb BP |
4462 | int error; |
4463 | ||
a9b22b7f BP |
4464 | rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority, |
4465 | fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG11_ANY); | |
dd51dae2 BP |
4466 | rule_criteria_require_rw(&criteria, |
4467 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
a9b22b7f BP |
4468 | error = collect_rules_strict(ofproto, &criteria, &rules); |
4469 | rule_criteria_destroy(&criteria); | |
4470 | ||
a8e547c1 BP |
4471 | if (!error) { |
4472 | if (rules.n == 0) { | |
baae3d02 | 4473 | error = modify_flows_add(ofproto, fm, req); |
a8e547c1 | 4474 | } else if (rules.n == 1) { |
baae3d02 | 4475 | error = modify_flows__(ofproto, fm, &rules, req); |
a8e547c1 | 4476 | } |
623e1caf | 4477 | } |
a8e547c1 BP |
4478 | |
4479 | rule_collection_destroy(&rules); | |
4480 | ||
4481 | return error; | |
79eee1eb | 4482 | } |
9ed18e46 BP |
4483 | \f |
4484 | /* OFPFC_DELETE implementation. */ | |
79eee1eb | 4485 | |
9ca4a86f | 4486 | /* Deletes the rules listed in 'rules'. */ |
254750ce | 4487 | static void |
9ca4a86f | 4488 | delete_flows__(const struct rule_collection *rules, |
baae3d02 BP |
4489 | enum ofp_flow_removed_reason reason, |
4490 | const struct flow_mod_requester *req) | |
15aaf599 | 4491 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 4492 | { |
9ca4a86f | 4493 | if (rules->n) { |
35f48b8b | 4494 | struct list dead_cookies = LIST_INITIALIZER(&dead_cookies); |
9ca4a86f BP |
4495 | struct ofproto *ofproto = rules->rules[0]->ofproto; |
4496 | size_t i; | |
79eee1eb | 4497 | |
9ca4a86f BP |
4498 | for (i = 0; i < rules->n; i++) { |
4499 | struct rule *rule = rules->rules[i]; | |
35f48b8b | 4500 | const struct rule_actions *actions = rule_get_actions(rule); |
79eee1eb | 4501 | |
9ca4a86f BP |
4502 | ofproto_rule_send_removed(rule, reason); |
4503 | ||
4504 | ofmonitor_report(ofproto->connmgr, rule, NXFME_DELETED, reason, | |
cdbdeeda SH |
4505 | req ? req->ofconn : NULL, req ? req->xid : 0, |
4506 | NULL); | |
9ca4a86f BP |
4507 | oftable_remove_rule(rule); |
4508 | ofproto->ofproto_class->rule_delete(rule); | |
35f48b8b BP |
4509 | |
4510 | learned_cookies_dec(ofproto, actions, &dead_cookies); | |
9ca4a86f | 4511 | } |
35f48b8b | 4512 | learned_cookies_flush(ofproto, &dead_cookies); |
9ca4a86f BP |
4513 | ofmonitor_flush(ofproto->connmgr); |
4514 | } | |
79eee1eb | 4515 | } |
79eee1eb BP |
4516 | |
4517 | /* Implements OFPFC_DELETE. */ | |
90bf1e07 | 4518 | static enum ofperr |
baae3d02 | 4519 | delete_flows_loose(struct ofproto *ofproto, |
7024dffe | 4520 | const struct ofputil_flow_mod *fm, |
baae3d02 | 4521 | const struct flow_mod_requester *req) |
15aaf599 | 4522 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4523 | { |
a9b22b7f | 4524 | struct rule_criteria criteria; |
a8e547c1 | 4525 | struct rule_collection rules; |
90bf1e07 | 4526 | enum ofperr error; |
064af421 | 4527 | |
a9b22b7f BP |
4528 | rule_criteria_init(&criteria, fm->table_id, &fm->match, 0, |
4529 | fm->cookie, fm->cookie_mask, | |
4530 | fm->out_port, fm->out_group); | |
dd51dae2 BP |
4531 | rule_criteria_require_rw(&criteria, |
4532 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
a9b22b7f BP |
4533 | error = collect_rules_loose(ofproto, &criteria, &rules); |
4534 | rule_criteria_destroy(&criteria); | |
4535 | ||
a8e547c1 | 4536 | if (!error && rules.n > 0) { |
9ca4a86f | 4537 | delete_flows__(&rules, fm->delete_reason, req); |
a8e547c1 BP |
4538 | } |
4539 | rule_collection_destroy(&rules); | |
4540 | ||
4541 | return error; | |
064af421 BP |
4542 | } |
4543 | ||
79eee1eb | 4544 | /* Implements OFPFC_DELETE_STRICT. */ |
90bf1e07 | 4545 | static enum ofperr |
baae3d02 BP |
4546 | delete_flow_strict(struct ofproto *ofproto, const struct ofputil_flow_mod *fm, |
4547 | const struct flow_mod_requester *req) | |
15aaf599 | 4548 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4549 | { |
a9b22b7f | 4550 | struct rule_criteria criteria; |
a8e547c1 | 4551 | struct rule_collection rules; |
90bf1e07 | 4552 | enum ofperr error; |
79eee1eb | 4553 | |
a9b22b7f BP |
4554 | rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority, |
4555 | fm->cookie, fm->cookie_mask, | |
4556 | fm->out_port, fm->out_group); | |
dd51dae2 BP |
4557 | rule_criteria_require_rw(&criteria, |
4558 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
a9b22b7f BP |
4559 | error = collect_rules_strict(ofproto, &criteria, &rules); |
4560 | rule_criteria_destroy(&criteria); | |
4561 | ||
a8e547c1 | 4562 | if (!error && rules.n > 0) { |
9ca4a86f | 4563 | delete_flows__(&rules, fm->delete_reason, req); |
a8e547c1 BP |
4564 | } |
4565 | rule_collection_destroy(&rules); | |
4566 | ||
4567 | return error; | |
abe529af BP |
4568 | } |
4569 | ||
4570 | static void | |
4571 | ofproto_rule_send_removed(struct rule *rule, uint8_t reason) | |
15aaf599 | 4572 | OVS_REQUIRES(ofproto_mutex) |
abe529af BP |
4573 | { |
4574 | struct ofputil_flow_removed fr; | |
dc437090 | 4575 | long long int used; |
abe529af | 4576 | |
834fe5cb BP |
4577 | if (rule_is_hidden(rule) || |
4578 | !(rule->flags & OFPUTIL_FF_SEND_FLOW_REM)) { | |
abe529af BP |
4579 | return; |
4580 | } | |
4581 | ||
5cb7a798 | 4582 | minimatch_expand(&rule->cr.match, &fr.match); |
81a76618 | 4583 | fr.priority = rule->cr.priority; |
abe529af BP |
4584 | fr.cookie = rule->flow_cookie; |
4585 | fr.reason = reason; | |
95216219 | 4586 | fr.table_id = rule->table_id; |
65e0be10 BP |
4587 | calc_duration(rule->created, time_msec(), |
4588 | &fr.duration_sec, &fr.duration_nsec); | |
d10976b7 | 4589 | ovs_mutex_lock(&rule->mutex); |
abe529af | 4590 | fr.idle_timeout = rule->idle_timeout; |
fa2bad0f | 4591 | fr.hard_timeout = rule->hard_timeout; |
d10976b7 | 4592 | ovs_mutex_unlock(&rule->mutex); |
abe529af | 4593 | rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count, |
dc437090 | 4594 | &fr.byte_count, &used); |
abe529af BP |
4595 | |
4596 | connmgr_send_flow_removed(rule->ofproto->connmgr, &fr); | |
4597 | } | |
4598 | ||
4599 | /* Sends an OpenFlow "flow removed" message with the given 'reason' (either | |
4600 | * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its | |
4601 | * ofproto. | |
4602 | * | |
4603 | * ofproto implementation ->run() functions should use this function to expire | |
4604 | * OpenFlow flows. */ | |
4605 | void | |
4606 | ofproto_rule_expire(struct rule *rule, uint8_t reason) | |
15aaf599 | 4607 | OVS_REQUIRES(ofproto_mutex) |
abe529af | 4608 | { |
b20f4073 | 4609 | ofproto_rule_delete__(rule, reason); |
79eee1eb | 4610 | } |
994c9973 BP |
4611 | |
4612 | /* Reduces '*timeout' to no more than 'max'. A value of zero in either case | |
4613 | * means "infinite". */ | |
4614 | static void | |
4615 | reduce_timeout(uint16_t max, uint16_t *timeout) | |
4616 | { | |
4617 | if (max && (!*timeout || *timeout > max)) { | |
4618 | *timeout = max; | |
4619 | } | |
4620 | } | |
4621 | ||
4622 | /* If 'idle_timeout' is nonzero, and 'rule' has no idle timeout or an idle | |
4623 | * timeout greater than 'idle_timeout', lowers 'rule''s idle timeout to | |
4624 | * 'idle_timeout' seconds. Similarly for 'hard_timeout'. | |
4625 | * | |
4626 | * Suitable for implementing OFPACT_FIN_TIMEOUT. */ | |
4627 | void | |
4628 | ofproto_rule_reduce_timeouts(struct rule *rule, | |
4629 | uint16_t idle_timeout, uint16_t hard_timeout) | |
d10976b7 | 4630 | OVS_EXCLUDED(ofproto_mutex, rule->mutex) |
994c9973 BP |
4631 | { |
4632 | if (!idle_timeout && !hard_timeout) { | |
4633 | return; | |
4634 | } | |
4635 | ||
abe7b10f | 4636 | ovs_mutex_lock(&ofproto_mutex); |
994c9973 BP |
4637 | if (list_is_empty(&rule->expirable)) { |
4638 | list_insert(&rule->ofproto->expirable, &rule->expirable); | |
4639 | } | |
abe7b10f | 4640 | ovs_mutex_unlock(&ofproto_mutex); |
994c9973 | 4641 | |
d10976b7 | 4642 | ovs_mutex_lock(&rule->mutex); |
994c9973 BP |
4643 | reduce_timeout(idle_timeout, &rule->idle_timeout); |
4644 | reduce_timeout(hard_timeout, &rule->hard_timeout); | |
d10976b7 | 4645 | ovs_mutex_unlock(&rule->mutex); |
994c9973 | 4646 | } |
79eee1eb | 4647 | \f |
90bf1e07 | 4648 | static enum ofperr |
2e4f5fcf | 4649 | handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
15aaf599 | 4650 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 4651 | { |
a5b8d268 | 4652 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
a9a2da38 | 4653 | struct ofputil_flow_mod fm; |
f25d0cf3 BP |
4654 | uint64_t ofpacts_stub[1024 / 8]; |
4655 | struct ofpbuf ofpacts; | |
90bf1e07 | 4656 | enum ofperr error; |
064af421 | 4657 | |
76589937 | 4658 | error = reject_slave_controller(ofconn); |
9deba63b | 4659 | if (error) { |
f25d0cf3 | 4660 | goto exit; |
9deba63b | 4661 | } |
3052b0c5 | 4662 | |
f25d0cf3 BP |
4663 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
4664 | error = ofputil_decode_flow_mod(&fm, oh, ofconn_get_protocol(ofconn), | |
7e9f8266 BP |
4665 | &ofpacts, |
4666 | u16_to_ofp(ofproto->max_ports), | |
4667 | ofproto->n_tables); | |
4668 | if (!error) { | |
4669 | error = ofproto_check_ofpacts(ofproto, fm.ofpacts, fm.ofpacts_len); | |
4670 | } | |
548de4dd | 4671 | if (!error) { |
baae3d02 BP |
4672 | struct flow_mod_requester req; |
4673 | ||
4674 | req.ofconn = ofconn; | |
834fe5cb | 4675 | req.xid = oh->xid; |
baae3d02 | 4676 | error = handle_flow_mod__(ofproto, &fm, &req); |
49bdc010 | 4677 | } |
a5b8d268 | 4678 | if (error) { |
f25d0cf3 | 4679 | goto exit_free_ofpacts; |
a5b8d268 | 4680 | } |
2e310801 | 4681 | |
696d1bcf | 4682 | ofconn_report_flow_mod(ofconn, fm.command); |
a5b8d268 | 4683 | |
f25d0cf3 BP |
4684 | exit_free_ofpacts: |
4685 | ofpbuf_uninit(&ofpacts); | |
4686 | exit: | |
4687 | return error; | |
75a75043 BP |
4688 | } |
4689 | ||
90bf1e07 | 4690 | static enum ofperr |
baae3d02 BP |
4691 | handle_flow_mod__(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4692 | const struct flow_mod_requester *req) | |
15aaf599 | 4693 | OVS_EXCLUDED(ofproto_mutex) |
75a75043 | 4694 | { |
35412852 | 4695 | enum ofperr error; |
75a75043 | 4696 | |
15aaf599 | 4697 | ovs_mutex_lock(&ofproto_mutex); |
baae3d02 BP |
4698 | switch (fm->command) { |
4699 | case OFPFC_ADD: | |
4700 | error = add_flow(ofproto, fm, req); | |
4701 | break; | |
3052b0c5 | 4702 | |
baae3d02 BP |
4703 | case OFPFC_MODIFY: |
4704 | error = modify_flows_loose(ofproto, fm, req); | |
4705 | break; | |
3052b0c5 | 4706 | |
baae3d02 BP |
4707 | case OFPFC_MODIFY_STRICT: |
4708 | error = modify_flow_strict(ofproto, fm, req); | |
4709 | break; | |
3052b0c5 | 4710 | |
baae3d02 BP |
4711 | case OFPFC_DELETE: |
4712 | error = delete_flows_loose(ofproto, fm, req); | |
4713 | break; | |
3052b0c5 | 4714 | |
baae3d02 BP |
4715 | case OFPFC_DELETE_STRICT: |
4716 | error = delete_flow_strict(ofproto, fm, req); | |
4717 | break; | |
3052b0c5 | 4718 | |
baae3d02 BP |
4719 | default: |
4720 | if (fm->command > 0xff) { | |
4721 | VLOG_WARN_RL(&rl, "%s: flow_mod has explicit table_id but " | |
4722 | "flow_mod_table_id extension is not enabled", | |
4723 | ofproto->name); | |
6c1491fb | 4724 | } |
baae3d02 BP |
4725 | error = OFPERR_OFPFMFC_BAD_COMMAND; |
4726 | break; | |
3052b0c5 | 4727 | } |
baae3d02 | 4728 | ofmonitor_flush(ofproto->connmgr); |
15aaf599 | 4729 | ovs_mutex_unlock(&ofproto_mutex); |
35412852 BP |
4730 | |
4731 | run_rule_executes(ofproto); | |
4732 | return error; | |
3052b0c5 BP |
4733 | } |
4734 | ||
90bf1e07 | 4735 | static enum ofperr |
d1e2cf21 | 4736 | handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh) |
9deba63b | 4737 | { |
f4f1ea7e BP |
4738 | struct ofputil_role_request request; |
4739 | struct ofputil_role_request reply; | |
9deba63b | 4740 | struct ofpbuf *buf; |
6ea4776b JR |
4741 | enum ofperr error; |
4742 | ||
f4f1ea7e | 4743 | error = ofputil_decode_role_message(oh, &request); |
6ea4776b JR |
4744 | if (error) { |
4745 | return error; | |
4746 | } | |
9deba63b | 4747 | |
f4f1ea7e | 4748 | if (request.role != OFPCR12_ROLE_NOCHANGE) { |
f4f1ea7e BP |
4749 | if (request.have_generation_id |
4750 | && !ofconn_set_master_election_id(ofconn, request.generation_id)) { | |
4751 | return OFPERR_OFPRRFC_STALE; | |
6ea4776b | 4752 | } |
6ea4776b | 4753 | |
f4f1ea7e BP |
4754 | ofconn_set_role(ofconn, request.role); |
4755 | } | |
9deba63b | 4756 | |
f4f1ea7e | 4757 | reply.role = ofconn_get_role(ofconn); |
147cc9d3 BP |
4758 | reply.have_generation_id = ofconn_get_master_election_id( |
4759 | ofconn, &reply.generation_id); | |
f4f1ea7e | 4760 | buf = ofputil_encode_role_reply(oh, &reply); |
b0421aa2 | 4761 | ofconn_send_reply(ofconn, buf); |
9deba63b BP |
4762 | |
4763 | return 0; | |
4764 | } | |
4765 | ||
90bf1e07 | 4766 | static enum ofperr |
6c1491fb BP |
4767 | handle_nxt_flow_mod_table_id(struct ofconn *ofconn, |
4768 | const struct ofp_header *oh) | |
4769 | { | |
982697a4 | 4770 | const struct nx_flow_mod_table_id *msg = ofpmsg_body(oh); |
27527aa0 BP |
4771 | enum ofputil_protocol cur, next; |
4772 | ||
4773 | cur = ofconn_get_protocol(ofconn); | |
4774 | next = ofputil_protocol_set_tid(cur, msg->set != 0); | |
4775 | ofconn_set_protocol(ofconn, next); | |
6c1491fb | 4776 | |
6c1491fb BP |
4777 | return 0; |
4778 | } | |
4779 | ||
90bf1e07 | 4780 | static enum ofperr |
d1e2cf21 | 4781 | handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh) |
09246b99 | 4782 | { |
982697a4 | 4783 | const struct nx_set_flow_format *msg = ofpmsg_body(oh); |
27527aa0 BP |
4784 | enum ofputil_protocol cur, next; |
4785 | enum ofputil_protocol next_base; | |
09246b99 | 4786 | |
27527aa0 BP |
4787 | next_base = ofputil_nx_flow_format_to_protocol(ntohl(msg->format)); |
4788 | if (!next_base) { | |
90bf1e07 | 4789 | return OFPERR_OFPBRC_EPERM; |
09246b99 | 4790 | } |
7ee20df1 | 4791 | |
27527aa0 BP |
4792 | cur = ofconn_get_protocol(ofconn); |
4793 | next = ofputil_protocol_set_base(cur, next_base); | |
27527aa0 | 4794 | ofconn_set_protocol(ofconn, next); |
b20f4073 | 4795 | |
7ee20df1 | 4796 | return 0; |
09246b99 BP |
4797 | } |
4798 | ||
90bf1e07 | 4799 | static enum ofperr |
54834960 EJ |
4800 | handle_nxt_set_packet_in_format(struct ofconn *ofconn, |
4801 | const struct ofp_header *oh) | |
4802 | { | |
982697a4 | 4803 | const struct nx_set_packet_in_format *msg = ofpmsg_body(oh); |
54834960 EJ |
4804 | uint32_t format; |
4805 | ||
54834960 | 4806 | format = ntohl(msg->format); |
a15f0eeb | 4807 | if (format != NXPIF_OPENFLOW10 && format != NXPIF_NXM) { |
90bf1e07 | 4808 | return OFPERR_OFPBRC_EPERM; |
54834960 EJ |
4809 | } |
4810 | ||
54834960 EJ |
4811 | ofconn_set_packet_in_format(ofconn, format); |
4812 | return 0; | |
4813 | } | |
4814 | ||
80d5aefd BP |
4815 | static enum ofperr |
4816 | handle_nxt_set_async_config(struct ofconn *ofconn, const struct ofp_header *oh) | |
4817 | { | |
982697a4 | 4818 | const struct nx_async_config *msg = ofpmsg_body(oh); |
80d5aefd BP |
4819 | uint32_t master[OAM_N_TYPES]; |
4820 | uint32_t slave[OAM_N_TYPES]; | |
4821 | ||
4822 | master[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[0]); | |
4823 | master[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[0]); | |
4824 | master[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[0]); | |
4825 | ||
4826 | slave[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[1]); | |
4827 | slave[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[1]); | |
4828 | slave[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[1]); | |
4829 | ||
4830 | ofconn_set_async_config(ofconn, master, slave); | |
4550b647 MM |
4831 | if (ofconn_get_type(ofconn) == OFCONN_SERVICE && |
4832 | !ofconn_get_miss_send_len(ofconn)) { | |
4833 | ofconn_set_miss_send_len(ofconn, OFP_DEFAULT_MISS_SEND_LEN); | |
4834 | } | |
80d5aefd BP |
4835 | |
4836 | return 0; | |
4837 | } | |
4838 | ||
c423b3b3 AC |
4839 | static enum ofperr |
4840 | handle_nxt_get_async_request(struct ofconn *ofconn, const struct ofp_header *oh) | |
4841 | { | |
4842 | struct ofpbuf *buf; | |
4843 | uint32_t master[OAM_N_TYPES]; | |
4844 | uint32_t slave[OAM_N_TYPES]; | |
4845 | struct nx_async_config *msg; | |
4846 | ||
4847 | ofconn_get_async_config(ofconn, master, slave); | |
4848 | buf = ofpraw_alloc_reply(OFPRAW_OFPT13_GET_ASYNC_REPLY, oh, 0); | |
4849 | msg = ofpbuf_put_zeros(buf, sizeof *msg); | |
4850 | ||
4851 | msg->packet_in_mask[0] = htonl(master[OAM_PACKET_IN]); | |
4852 | msg->port_status_mask[0] = htonl(master[OAM_PORT_STATUS]); | |
4853 | msg->flow_removed_mask[0] = htonl(master[OAM_FLOW_REMOVED]); | |
4854 | ||
4855 | msg->packet_in_mask[1] = htonl(slave[OAM_PACKET_IN]); | |
4856 | msg->port_status_mask[1] = htonl(slave[OAM_PORT_STATUS]); | |
4857 | msg->flow_removed_mask[1] = htonl(slave[OAM_FLOW_REMOVED]); | |
4858 | ||
4859 | ofconn_send_reply(ofconn, buf); | |
4860 | ||
4861 | return 0; | |
4862 | } | |
4863 | ||
a7349929 BP |
4864 | static enum ofperr |
4865 | handle_nxt_set_controller_id(struct ofconn *ofconn, | |
4866 | const struct ofp_header *oh) | |
4867 | { | |
982697a4 | 4868 | const struct nx_controller_id *nci = ofpmsg_body(oh); |
a7349929 | 4869 | |
a7349929 BP |
4870 | if (!is_all_zeros(nci->zero, sizeof nci->zero)) { |
4871 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
4872 | } | |
4873 | ||
4874 | ofconn_set_controller_id(ofconn, ntohs(nci->controller_id)); | |
4875 | return 0; | |
4876 | } | |
4877 | ||
90bf1e07 | 4878 | static enum ofperr |
d1e2cf21 | 4879 | handle_barrier_request(struct ofconn *ofconn, const struct ofp_header *oh) |
246e61ea | 4880 | { |
246e61ea JP |
4881 | struct ofpbuf *buf; |
4882 | ||
982697a4 BP |
4883 | buf = ofpraw_alloc_reply((oh->version == OFP10_VERSION |
4884 | ? OFPRAW_OFPT10_BARRIER_REPLY | |
4885 | : OFPRAW_OFPT11_BARRIER_REPLY), oh, 0); | |
b0421aa2 | 4886 | ofconn_send_reply(ofconn, buf); |
246e61ea JP |
4887 | return 0; |
4888 | } | |
4889 | ||
2b07c8b1 BP |
4890 | static void |
4891 | ofproto_compose_flow_refresh_update(const struct rule *rule, | |
4892 | enum nx_flow_monitor_flags flags, | |
4893 | struct list *msgs) | |
15aaf599 | 4894 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 | 4895 | { |
6f00e29b | 4896 | const struct rule_actions *actions; |
2b07c8b1 | 4897 | struct ofputil_flow_update fu; |
5cb7a798 | 4898 | struct match match; |
2b07c8b1 | 4899 | |
2b07c8b1 BP |
4900 | fu.event = (flags & (NXFMF_INITIAL | NXFMF_ADD) |
4901 | ? NXFME_ADDED : NXFME_MODIFIED); | |
4902 | fu.reason = 0; | |
d10976b7 | 4903 | ovs_mutex_lock(&rule->mutex); |
2b07c8b1 BP |
4904 | fu.idle_timeout = rule->idle_timeout; |
4905 | fu.hard_timeout = rule->hard_timeout; | |
d10976b7 | 4906 | ovs_mutex_unlock(&rule->mutex); |
2b07c8b1 BP |
4907 | fu.table_id = rule->table_id; |
4908 | fu.cookie = rule->flow_cookie; | |
5cb7a798 BP |
4909 | minimatch_expand(&rule->cr.match, &match); |
4910 | fu.match = &match; | |
6b140a4e | 4911 | fu.priority = rule->cr.priority; |
6f00e29b | 4912 | |
b20f4073 | 4913 | actions = flags & NXFMF_ACTIONS ? rule_get_actions(rule) : NULL; |
6f00e29b BP |
4914 | fu.ofpacts = actions ? actions->ofpacts : NULL; |
4915 | fu.ofpacts_len = actions ? actions->ofpacts_len : 0; | |
2b07c8b1 BP |
4916 | |
4917 | if (list_is_empty(msgs)) { | |
4918 | ofputil_start_flow_update(msgs); | |
4919 | } | |
4920 | ofputil_append_flow_update(&fu, msgs); | |
4921 | } | |
4922 | ||
4923 | void | |
a8e547c1 BP |
4924 | ofmonitor_compose_refresh_updates(struct rule_collection *rules, |
4925 | struct list *msgs) | |
15aaf599 | 4926 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 | 4927 | { |
a8e547c1 | 4928 | size_t i; |
2b07c8b1 | 4929 | |
a8e547c1 BP |
4930 | for (i = 0; i < rules->n; i++) { |
4931 | struct rule *rule = rules->rules[i]; | |
2b07c8b1 BP |
4932 | enum nx_flow_monitor_flags flags = rule->monitor_flags; |
4933 | rule->monitor_flags = 0; | |
4934 | ||
4935 | ofproto_compose_flow_refresh_update(rule, flags, msgs); | |
4936 | } | |
4937 | } | |
4938 | ||
4939 | static void | |
4940 | ofproto_collect_ofmonitor_refresh_rule(const struct ofmonitor *m, | |
4941 | struct rule *rule, uint64_t seqno, | |
a8e547c1 | 4942 | struct rule_collection *rules) |
15aaf599 | 4943 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
4944 | { |
4945 | enum nx_flow_monitor_flags update; | |
4946 | ||
5e8b38b0 | 4947 | if (rule_is_hidden(rule)) { |
2b07c8b1 BP |
4948 | return; |
4949 | } | |
4950 | ||
b20f4073 | 4951 | if (!ofproto_rule_has_out_port(rule, m->out_port)) { |
2b07c8b1 BP |
4952 | return; |
4953 | } | |
4954 | ||
4955 | if (seqno) { | |
4956 | if (rule->add_seqno > seqno) { | |
4957 | update = NXFMF_ADD | NXFMF_MODIFY; | |
4958 | } else if (rule->modify_seqno > seqno) { | |
4959 | update = NXFMF_MODIFY; | |
4960 | } else { | |
4961 | return; | |
4962 | } | |
4963 | ||
4964 | if (!(m->flags & update)) { | |
4965 | return; | |
4966 | } | |
4967 | } else { | |
4968 | update = NXFMF_INITIAL; | |
4969 | } | |
4970 | ||
4971 | if (!rule->monitor_flags) { | |
a8e547c1 | 4972 | rule_collection_add(rules, rule); |
2b07c8b1 BP |
4973 | } |
4974 | rule->monitor_flags |= update | (m->flags & NXFMF_ACTIONS); | |
4975 | } | |
4976 | ||
4977 | static void | |
4978 | ofproto_collect_ofmonitor_refresh_rules(const struct ofmonitor *m, | |
4979 | uint64_t seqno, | |
a8e547c1 | 4980 | struct rule_collection *rules) |
15aaf599 | 4981 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
4982 | { |
4983 | const struct ofproto *ofproto = ofconn_get_ofproto(m->ofconn); | |
2b07c8b1 | 4984 | const struct oftable *table; |
81a76618 | 4985 | struct cls_rule target; |
2b07c8b1 | 4986 | |
5cb7a798 | 4987 | cls_rule_init_from_minimatch(&target, &m->match, 0); |
2b07c8b1 | 4988 | FOR_EACH_MATCHING_TABLE (table, m->table_id, ofproto) { |
2b07c8b1 BP |
4989 | struct rule *rule; |
4990 | ||
5f0476ce | 4991 | CLS_FOR_EACH_TARGET (rule, cr, &table->cls, &target) { |
2b07c8b1 BP |
4992 | ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules); |
4993 | } | |
4994 | } | |
48d28ac1 | 4995 | cls_rule_destroy(&target); |
2b07c8b1 BP |
4996 | } |
4997 | ||
4998 | static void | |
4999 | ofproto_collect_ofmonitor_initial_rules(struct ofmonitor *m, | |
a8e547c1 | 5000 | struct rule_collection *rules) |
15aaf599 | 5001 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
5002 | { |
5003 | if (m->flags & NXFMF_INITIAL) { | |
5004 | ofproto_collect_ofmonitor_refresh_rules(m, 0, rules); | |
5005 | } | |
5006 | } | |
5007 | ||
5008 | void | |
5009 | ofmonitor_collect_resume_rules(struct ofmonitor *m, | |
a8e547c1 | 5010 | uint64_t seqno, struct rule_collection *rules) |
15aaf599 | 5011 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
5012 | { |
5013 | ofproto_collect_ofmonitor_refresh_rules(m, seqno, rules); | |
5014 | } | |
5015 | ||
7b900689 SH |
5016 | static enum ofperr |
5017 | flow_monitor_delete(struct ofconn *ofconn, uint32_t id) | |
5018 | OVS_REQUIRES(ofproto_mutex) | |
5019 | { | |
5020 | struct ofmonitor *m; | |
5021 | enum ofperr error; | |
5022 | ||
5023 | m = ofmonitor_lookup(ofconn, id); | |
5024 | if (m) { | |
5025 | ofmonitor_destroy(m); | |
5026 | error = 0; | |
5027 | } else { | |
5028 | error = OFPERR_OFPMOFC_UNKNOWN_MONITOR; | |
5029 | } | |
5030 | ||
5031 | return error; | |
5032 | } | |
5033 | ||
2b07c8b1 | 5034 | static enum ofperr |
982697a4 | 5035 | handle_flow_monitor_request(struct ofconn *ofconn, const struct ofp_header *oh) |
15aaf599 | 5036 | OVS_EXCLUDED(ofproto_mutex) |
2b07c8b1 BP |
5037 | { |
5038 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5039 | struct ofmonitor **monitors; | |
5040 | size_t n_monitors, allocated_monitors; | |
a8e547c1 | 5041 | struct rule_collection rules; |
2b07c8b1 BP |
5042 | struct list replies; |
5043 | enum ofperr error; | |
2b07c8b1 BP |
5044 | struct ofpbuf b; |
5045 | size_t i; | |
5046 | ||
982697a4 | 5047 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
2b07c8b1 BP |
5048 | monitors = NULL; |
5049 | n_monitors = allocated_monitors = 0; | |
15aaf599 BP |
5050 | |
5051 | ovs_mutex_lock(&ofproto_mutex); | |
2b07c8b1 BP |
5052 | for (;;) { |
5053 | struct ofputil_flow_monitor_request request; | |
5054 | struct ofmonitor *m; | |
5055 | int retval; | |
5056 | ||
5057 | retval = ofputil_decode_flow_monitor_request(&request, &b); | |
5058 | if (retval == EOF) { | |
5059 | break; | |
5060 | } else if (retval) { | |
5061 | error = retval; | |
5062 | goto error; | |
5063 | } | |
5064 | ||
5065 | if (request.table_id != 0xff | |
5066 | && request.table_id >= ofproto->n_tables) { | |
5067 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
5068 | goto error; | |
5069 | } | |
5070 | ||
5071 | error = ofmonitor_create(&request, ofconn, &m); | |
5072 | if (error) { | |
5073 | goto error; | |
5074 | } | |
5075 | ||
5076 | if (n_monitors >= allocated_monitors) { | |
5077 | monitors = x2nrealloc(monitors, &allocated_monitors, | |
5078 | sizeof *monitors); | |
5079 | } | |
5080 | monitors[n_monitors++] = m; | |
5081 | } | |
5082 | ||
a8e547c1 | 5083 | rule_collection_init(&rules); |
2b07c8b1 BP |
5084 | for (i = 0; i < n_monitors; i++) { |
5085 | ofproto_collect_ofmonitor_initial_rules(monitors[i], &rules); | |
5086 | } | |
5087 | ||
982697a4 | 5088 | ofpmp_init(&replies, oh); |
2b07c8b1 | 5089 | ofmonitor_compose_refresh_updates(&rules, &replies); |
15aaf599 BP |
5090 | ovs_mutex_unlock(&ofproto_mutex); |
5091 | ||
a8e547c1 BP |
5092 | rule_collection_destroy(&rules); |
5093 | ||
2b07c8b1 | 5094 | ofconn_send_replies(ofconn, &replies); |
2b07c8b1 BP |
5095 | free(monitors); |
5096 | ||
5097 | return 0; | |
5098 | ||
5099 | error: | |
5100 | for (i = 0; i < n_monitors; i++) { | |
5101 | ofmonitor_destroy(monitors[i]); | |
5102 | } | |
5103 | free(monitors); | |
4cd1bc9d BP |
5104 | ovs_mutex_unlock(&ofproto_mutex); |
5105 | ||
2b07c8b1 BP |
5106 | return error; |
5107 | } | |
5108 | ||
5109 | static enum ofperr | |
5110 | handle_flow_monitor_cancel(struct ofconn *ofconn, const struct ofp_header *oh) | |
15aaf599 | 5111 | OVS_EXCLUDED(ofproto_mutex) |
2b07c8b1 | 5112 | { |
15aaf599 | 5113 | enum ofperr error; |
2b07c8b1 BP |
5114 | uint32_t id; |
5115 | ||
5116 | id = ofputil_decode_flow_monitor_cancel(oh); | |
15aaf599 BP |
5117 | |
5118 | ovs_mutex_lock(&ofproto_mutex); | |
7b900689 | 5119 | error = flow_monitor_delete(ofconn, id); |
15aaf599 | 5120 | ovs_mutex_unlock(&ofproto_mutex); |
2b07c8b1 | 5121 | |
15aaf599 | 5122 | return error; |
2b07c8b1 BP |
5123 | } |
5124 | ||
9cae45dc JR |
5125 | /* Meters implementation. |
5126 | * | |
5127 | * Meter table entry, indexed by the OpenFlow meter_id. | |
9cae45dc JR |
5128 | * 'created' is used to compute the duration for meter stats. |
5129 | * 'list rules' is needed so that we can delete the dependent rules when the | |
5130 | * meter table entry is deleted. | |
5131 | * 'provider_meter_id' is for the provider's private use. | |
5132 | */ | |
5133 | struct meter { | |
5134 | long long int created; /* Time created. */ | |
5135 | struct list rules; /* List of "struct rule_dpif"s. */ | |
5136 | ofproto_meter_id provider_meter_id; | |
5137 | uint16_t flags; /* Meter flags. */ | |
5138 | uint16_t n_bands; /* Number of meter bands. */ | |
5139 | struct ofputil_meter_band *bands; | |
5140 | }; | |
5141 | ||
5142 | /* | |
5143 | * This is used in instruction validation at flow set-up time, | |
5144 | * as flows may not use non-existing meters. | |
9cae45dc JR |
5145 | * Return value of UINT32_MAX signifies an invalid meter. |
5146 | */ | |
65efd2ab JR |
5147 | static uint32_t |
5148 | get_provider_meter_id(const struct ofproto *ofproto, uint32_t of_meter_id) | |
9cae45dc JR |
5149 | { |
5150 | if (of_meter_id && of_meter_id <= ofproto->meter_features.max_meters) { | |
5151 | const struct meter *meter = ofproto->meters[of_meter_id]; | |
5152 | if (meter) { | |
5153 | return meter->provider_meter_id.uint32; | |
5154 | } | |
5155 | } | |
5156 | return UINT32_MAX; | |
5157 | } | |
5158 | ||
062fea06 BP |
5159 | /* Finds the meter invoked by 'rule''s actions and adds 'rule' to the meter's |
5160 | * list of rules. */ | |
5161 | static void | |
5162 | meter_insert_rule(struct rule *rule) | |
5163 | { | |
5164 | const struct rule_actions *a = rule_get_actions(rule); | |
5165 | uint32_t meter_id = ofpacts_get_meter(a->ofpacts, a->ofpacts_len); | |
5166 | struct meter *meter = rule->ofproto->meters[meter_id]; | |
5167 | ||
5168 | list_insert(&meter->rules, &rule->meter_list_node); | |
5169 | } | |
5170 | ||
9cae45dc JR |
5171 | static void |
5172 | meter_update(struct meter *meter, const struct ofputil_meter_config *config) | |
5173 | { | |
5174 | free(meter->bands); | |
5175 | ||
5176 | meter->flags = config->flags; | |
5177 | meter->n_bands = config->n_bands; | |
5178 | meter->bands = xmemdup(config->bands, | |
5179 | config->n_bands * sizeof *meter->bands); | |
5180 | } | |
5181 | ||
5182 | static struct meter * | |
5183 | meter_create(const struct ofputil_meter_config *config, | |
5184 | ofproto_meter_id provider_meter_id) | |
5185 | { | |
5186 | struct meter *meter; | |
5187 | ||
5188 | meter = xzalloc(sizeof *meter); | |
5189 | meter->provider_meter_id = provider_meter_id; | |
5190 | meter->created = time_msec(); | |
5191 | list_init(&meter->rules); | |
5192 | ||
5193 | meter_update(meter, config); | |
5194 | ||
5195 | return meter; | |
5196 | } | |
5197 | ||
6b3f7f02 JR |
5198 | static void |
5199 | meter_delete(struct ofproto *ofproto, uint32_t first, uint32_t last) | |
15aaf599 | 5200 | OVS_REQUIRES(ofproto_mutex) |
6b3f7f02 JR |
5201 | { |
5202 | uint32_t mid; | |
5203 | for (mid = first; mid <= last; ++mid) { | |
5204 | struct meter *meter = ofproto->meters[mid]; | |
5205 | if (meter) { | |
5206 | ofproto->meters[mid] = NULL; | |
5207 | ofproto->ofproto_class->meter_del(ofproto, | |
5208 | meter->provider_meter_id); | |
5209 | free(meter->bands); | |
5210 | free(meter); | |
5211 | } | |
5212 | } | |
5213 | } | |
5214 | ||
9cae45dc JR |
5215 | static enum ofperr |
5216 | handle_add_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm) | |
5217 | { | |
5218 | ofproto_meter_id provider_meter_id = { UINT32_MAX }; | |
5219 | struct meter **meterp = &ofproto->meters[mm->meter.meter_id]; | |
5220 | enum ofperr error; | |
5221 | ||
5222 | if (*meterp) { | |
5223 | return OFPERR_OFPMMFC_METER_EXISTS; | |
5224 | } | |
5225 | ||
5226 | error = ofproto->ofproto_class->meter_set(ofproto, &provider_meter_id, | |
5227 | &mm->meter); | |
5228 | if (!error) { | |
5229 | ovs_assert(provider_meter_id.uint32 != UINT32_MAX); | |
5230 | *meterp = meter_create(&mm->meter, provider_meter_id); | |
5231 | } | |
f0f8c6c2 | 5232 | return error; |
9cae45dc JR |
5233 | } |
5234 | ||
5235 | static enum ofperr | |
5236 | handle_modify_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm) | |
5237 | { | |
5238 | struct meter *meter = ofproto->meters[mm->meter.meter_id]; | |
5239 | enum ofperr error; | |
e555eb7c | 5240 | uint32_t provider_meter_id; |
9cae45dc JR |
5241 | |
5242 | if (!meter) { | |
5243 | return OFPERR_OFPMMFC_UNKNOWN_METER; | |
5244 | } | |
5245 | ||
e555eb7c | 5246 | provider_meter_id = meter->provider_meter_id.uint32; |
9cae45dc JR |
5247 | error = ofproto->ofproto_class->meter_set(ofproto, |
5248 | &meter->provider_meter_id, | |
5249 | &mm->meter); | |
e555eb7c | 5250 | ovs_assert(meter->provider_meter_id.uint32 == provider_meter_id); |
9cae45dc JR |
5251 | if (!error) { |
5252 | meter_update(meter, &mm->meter); | |
5253 | } | |
5254 | return error; | |
5255 | } | |
5256 | ||
5257 | static enum ofperr | |
baae3d02 | 5258 | handle_delete_meter(struct ofconn *ofconn, struct ofputil_meter_mod *mm) |
15aaf599 | 5259 | OVS_EXCLUDED(ofproto_mutex) |
9cae45dc JR |
5260 | { |
5261 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5262 | uint32_t meter_id = mm->meter.meter_id; | |
a8e547c1 BP |
5263 | struct rule_collection rules; |
5264 | enum ofperr error = 0; | |
9cae45dc | 5265 | uint32_t first, last; |
9cae45dc JR |
5266 | |
5267 | if (meter_id == OFPM13_ALL) { | |
5268 | first = 1; | |
5269 | last = ofproto->meter_features.max_meters; | |
5270 | } else { | |
5271 | if (!meter_id || meter_id > ofproto->meter_features.max_meters) { | |
5272 | return 0; | |
5273 | } | |
5274 | first = last = meter_id; | |
5275 | } | |
5276 | ||
5277 | /* First delete the rules that use this meter. If any of those rules are | |
5278 | * currently being modified, postpone the whole operation until later. */ | |
a8e547c1 | 5279 | rule_collection_init(&rules); |
15aaf599 | 5280 | ovs_mutex_lock(&ofproto_mutex); |
9cae45dc JR |
5281 | for (meter_id = first; meter_id <= last; ++meter_id) { |
5282 | struct meter *meter = ofproto->meters[meter_id]; | |
5283 | if (meter && !list_is_empty(&meter->rules)) { | |
5284 | struct rule *rule; | |
5285 | ||
5286 | LIST_FOR_EACH (rule, meter_list_node, &meter->rules) { | |
a8e547c1 | 5287 | rule_collection_add(&rules, rule); |
9cae45dc JR |
5288 | } |
5289 | } | |
5290 | } | |
a8e547c1 | 5291 | if (rules.n > 0) { |
9ca4a86f | 5292 | delete_flows__(&rules, OFPRR_METER_DELETE, NULL); |
9cae45dc JR |
5293 | } |
5294 | ||
5295 | /* Delete the meters. */ | |
6b3f7f02 | 5296 | meter_delete(ofproto, first, last); |
9cae45dc | 5297 | |
15aaf599 | 5298 | ovs_mutex_unlock(&ofproto_mutex); |
a8e547c1 BP |
5299 | rule_collection_destroy(&rules); |
5300 | ||
5301 | return error; | |
9cae45dc JR |
5302 | } |
5303 | ||
5304 | static enum ofperr | |
5305 | handle_meter_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
5306 | { | |
5307 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5308 | struct ofputil_meter_mod mm; | |
5309 | uint64_t bands_stub[256 / 8]; | |
5310 | struct ofpbuf bands; | |
5311 | uint32_t meter_id; | |
5312 | enum ofperr error; | |
5313 | ||
5314 | error = reject_slave_controller(ofconn); | |
5315 | if (error) { | |
5316 | return error; | |
5317 | } | |
5318 | ||
5319 | ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub); | |
5320 | ||
5321 | error = ofputil_decode_meter_mod(oh, &mm, &bands); | |
5322 | if (error) { | |
5323 | goto exit_free_bands; | |
5324 | } | |
5325 | ||
5326 | meter_id = mm.meter.meter_id; | |
5327 | ||
5328 | if (mm.command != OFPMC13_DELETE) { | |
5329 | /* Fails also when meters are not implemented by the provider. */ | |
b31e8700 | 5330 | if (meter_id == 0 || meter_id > OFPM13_MAX) { |
9cae45dc JR |
5331 | error = OFPERR_OFPMMFC_INVALID_METER; |
5332 | goto exit_free_bands; | |
b31e8700 JR |
5333 | } else if (meter_id > ofproto->meter_features.max_meters) { |
5334 | error = OFPERR_OFPMMFC_OUT_OF_METERS; | |
5335 | goto exit_free_bands; | |
9cae45dc JR |
5336 | } |
5337 | if (mm.meter.n_bands > ofproto->meter_features.max_bands) { | |
5338 | error = OFPERR_OFPMMFC_OUT_OF_BANDS; | |
5339 | goto exit_free_bands; | |
5340 | } | |
5341 | } | |
5342 | ||
5343 | switch (mm.command) { | |
5344 | case OFPMC13_ADD: | |
5345 | error = handle_add_meter(ofproto, &mm); | |
5346 | break; | |
5347 | ||
5348 | case OFPMC13_MODIFY: | |
5349 | error = handle_modify_meter(ofproto, &mm); | |
5350 | break; | |
5351 | ||
5352 | case OFPMC13_DELETE: | |
baae3d02 | 5353 | error = handle_delete_meter(ofconn, &mm); |
9cae45dc JR |
5354 | break; |
5355 | ||
5356 | default: | |
5357 | error = OFPERR_OFPMMFC_BAD_COMMAND; | |
5358 | break; | |
5359 | } | |
5360 | ||
5361 | exit_free_bands: | |
5362 | ofpbuf_uninit(&bands); | |
5363 | return error; | |
5364 | } | |
5365 | ||
5366 | static enum ofperr | |
5367 | handle_meter_features_request(struct ofconn *ofconn, | |
5368 | const struct ofp_header *request) | |
5369 | { | |
5370 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5371 | struct ofputil_meter_features features; | |
5372 | struct ofpbuf *b; | |
5373 | ||
5374 | if (ofproto->ofproto_class->meter_get_features) { | |
5375 | ofproto->ofproto_class->meter_get_features(ofproto, &features); | |
5376 | } else { | |
5377 | memset(&features, 0, sizeof features); | |
5378 | } | |
5379 | b = ofputil_encode_meter_features_reply(&features, request); | |
5380 | ||
5381 | ofconn_send_reply(ofconn, b); | |
5382 | return 0; | |
5383 | } | |
5384 | ||
5385 | static enum ofperr | |
5386 | handle_meter_request(struct ofconn *ofconn, const struct ofp_header *request, | |
5387 | enum ofptype type) | |
5388 | { | |
5389 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5390 | struct list replies; | |
5391 | uint64_t bands_stub[256 / 8]; | |
5392 | struct ofpbuf bands; | |
5393 | uint32_t meter_id, first, last; | |
5394 | ||
5395 | ofputil_decode_meter_request(request, &meter_id); | |
5396 | ||
5397 | if (meter_id == OFPM13_ALL) { | |
5398 | first = 1; | |
5399 | last = ofproto->meter_features.max_meters; | |
5400 | } else { | |
5401 | if (!meter_id || meter_id > ofproto->meter_features.max_meters || | |
5402 | !ofproto->meters[meter_id]) { | |
5403 | return OFPERR_OFPMMFC_UNKNOWN_METER; | |
5404 | } | |
5405 | first = last = meter_id; | |
5406 | } | |
5407 | ||
5408 | ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub); | |
5409 | ofpmp_init(&replies, request); | |
5410 | ||
5411 | for (meter_id = first; meter_id <= last; ++meter_id) { | |
5412 | struct meter *meter = ofproto->meters[meter_id]; | |
5413 | if (!meter) { | |
5414 | continue; /* Skip non-existing meters. */ | |
5415 | } | |
261bd854 | 5416 | if (type == OFPTYPE_METER_STATS_REQUEST) { |
9cae45dc JR |
5417 | struct ofputil_meter_stats stats; |
5418 | ||
5419 | stats.meter_id = meter_id; | |
5420 | ||
5421 | /* Provider sets the packet and byte counts, we do the rest. */ | |
5422 | stats.flow_count = list_size(&meter->rules); | |
5423 | calc_duration(meter->created, time_msec(), | |
5424 | &stats.duration_sec, &stats.duration_nsec); | |
5425 | stats.n_bands = meter->n_bands; | |
5426 | ofpbuf_clear(&bands); | |
5427 | stats.bands | |
5428 | = ofpbuf_put_uninit(&bands, | |
5429 | meter->n_bands * sizeof *stats.bands); | |
5430 | ||
5431 | if (!ofproto->ofproto_class->meter_get(ofproto, | |
5432 | meter->provider_meter_id, | |
5433 | &stats)) { | |
5434 | ofputil_append_meter_stats(&replies, &stats); | |
5435 | } | |
5436 | } else { /* type == OFPTYPE_METER_CONFIG_REQUEST */ | |
5437 | struct ofputil_meter_config config; | |
5438 | ||
5439 | config.meter_id = meter_id; | |
5440 | config.flags = meter->flags; | |
5441 | config.n_bands = meter->n_bands; | |
5442 | config.bands = meter->bands; | |
5443 | ofputil_append_meter_config(&replies, &config); | |
5444 | } | |
5445 | } | |
5446 | ||
5447 | ofconn_send_replies(ofconn, &replies); | |
5448 | ofpbuf_uninit(&bands); | |
5449 | return 0; | |
5450 | } | |
5451 | ||
3fc3b679 AZ |
5452 | static bool |
5453 | ofproto_group_lookup__(const struct ofproto *ofproto, uint32_t group_id, | |
5454 | struct ofgroup **group) | |
5455 | OVS_REQ_RDLOCK(ofproto->groups_rwlock) | |
7395c052 | 5456 | { |
7395c052 NZ |
5457 | HMAP_FOR_EACH_IN_BUCKET (*group, hmap_node, |
5458 | hash_int(group_id, 0), &ofproto->groups) { | |
5459 | if ((*group)->group_id == group_id) { | |
7395c052 NZ |
5460 | return true; |
5461 | } | |
5462 | } | |
3fc3b679 | 5463 | |
7395c052 NZ |
5464 | return false; |
5465 | } | |
5466 | ||
3fc3b679 AZ |
5467 | /* If the group exists, this function increments the groups's reference count. |
5468 | * | |
5469 | * Make sure to call ofproto_group_unref() after no longer needing to maintain | |
5470 | * a reference to the group. */ | |
5471 | bool | |
5472 | ofproto_group_lookup(const struct ofproto *ofproto, uint32_t group_id, | |
5473 | struct ofgroup **group) | |
7395c052 | 5474 | { |
3fc3b679 AZ |
5475 | bool found; |
5476 | ||
5477 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
5478 | found = ofproto_group_lookup__(ofproto, group_id, group); | |
5479 | if (found) { | |
5480 | ofproto_group_ref(*group); | |
7395c052 | 5481 | } |
3fc3b679 AZ |
5482 | ovs_rwlock_unlock(&ofproto->groups_rwlock); |
5483 | return found; | |
7395c052 NZ |
5484 | } |
5485 | ||
5486 | static bool | |
7e9f8266 | 5487 | ofproto_group_exists__(const struct ofproto *ofproto, uint32_t group_id) |
7395c052 NZ |
5488 | OVS_REQ_RDLOCK(ofproto->groups_rwlock) |
5489 | { | |
5490 | struct ofgroup *grp; | |
5491 | ||
5492 | HMAP_FOR_EACH_IN_BUCKET (grp, hmap_node, | |
5493 | hash_int(group_id, 0), &ofproto->groups) { | |
5494 | if (grp->group_id == group_id) { | |
5495 | return true; | |
5496 | } | |
5497 | } | |
5498 | return false; | |
5499 | } | |
5500 | ||
7e9f8266 BP |
5501 | static bool |
5502 | ofproto_group_exists(const struct ofproto *ofproto, uint32_t group_id) | |
5503 | OVS_EXCLUDED(ofproto->groups_rwlock) | |
5504 | { | |
5505 | bool exists; | |
5506 | ||
5507 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
5508 | exists = ofproto_group_exists__(ofproto, group_id); | |
5509 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5510 | ||
5511 | return exists; | |
5512 | } | |
5513 | ||
732feb93 SH |
5514 | static uint32_t |
5515 | group_get_ref_count(struct ofgroup *group) | |
5516 | OVS_EXCLUDED(ofproto_mutex) | |
5517 | { | |
eaf004bd | 5518 | struct ofproto *ofproto = CONST_CAST(struct ofproto *, group->ofproto); |
732feb93 SH |
5519 | struct rule_criteria criteria; |
5520 | struct rule_collection rules; | |
5521 | struct match match; | |
5522 | enum ofperr error; | |
5523 | uint32_t count; | |
5524 | ||
5525 | match_init_catchall(&match); | |
5526 | rule_criteria_init(&criteria, 0xff, &match, 0, htonll(0), htonll(0), | |
5527 | OFPP_ANY, group->group_id); | |
5528 | ovs_mutex_lock(&ofproto_mutex); | |
5529 | error = collect_rules_loose(ofproto, &criteria, &rules); | |
5530 | ovs_mutex_unlock(&ofproto_mutex); | |
5531 | rule_criteria_destroy(&criteria); | |
5532 | ||
5533 | count = !error && rules.n < UINT32_MAX ? rules.n : UINT32_MAX; | |
5534 | ||
5535 | rule_collection_destroy(&rules); | |
5536 | return count; | |
5537 | } | |
5538 | ||
7395c052 NZ |
5539 | static void |
5540 | append_group_stats(struct ofgroup *group, struct list *replies) | |
7395c052 NZ |
5541 | { |
5542 | struct ofputil_group_stats ogs; | |
eaf004bd | 5543 | const struct ofproto *ofproto = group->ofproto; |
7395c052 NZ |
5544 | long long int now = time_msec(); |
5545 | int error; | |
5546 | ||
646b2a9c SH |
5547 | ogs.bucket_stats = xmalloc(group->n_buckets * sizeof *ogs.bucket_stats); |
5548 | ||
732feb93 SH |
5549 | /* Provider sets the packet and byte counts, we do the rest. */ |
5550 | ogs.ref_count = group_get_ref_count(group); | |
5551 | ogs.n_buckets = group->n_buckets; | |
5552 | ||
7395c052 NZ |
5553 | error = (ofproto->ofproto_class->group_get_stats |
5554 | ? ofproto->ofproto_class->group_get_stats(group, &ogs) | |
5555 | : EOPNOTSUPP); | |
5556 | if (error) { | |
7395c052 NZ |
5557 | ogs.packet_count = UINT64_MAX; |
5558 | ogs.byte_count = UINT64_MAX; | |
7395c052 NZ |
5559 | memset(ogs.bucket_stats, 0xff, |
5560 | ogs.n_buckets * sizeof *ogs.bucket_stats); | |
5561 | } | |
5562 | ||
5563 | ogs.group_id = group->group_id; | |
5564 | calc_duration(group->created, now, &ogs.duration_sec, &ogs.duration_nsec); | |
5565 | ||
5566 | ofputil_append_group_stats(replies, &ogs); | |
646b2a9c SH |
5567 | |
5568 | free(ogs.bucket_stats); | |
7395c052 NZ |
5569 | } |
5570 | ||
19187a71 BP |
5571 | static void |
5572 | handle_group_request(struct ofconn *ofconn, | |
5573 | const struct ofp_header *request, uint32_t group_id, | |
5574 | void (*cb)(struct ofgroup *, struct list *replies)) | |
7395c052 NZ |
5575 | { |
5576 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
7395c052 | 5577 | struct ofgroup *group; |
19187a71 | 5578 | struct list replies; |
7395c052 NZ |
5579 | |
5580 | ofpmp_init(&replies, request); | |
7395c052 NZ |
5581 | if (group_id == OFPG_ALL) { |
5582 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
5583 | HMAP_FOR_EACH (group, hmap_node, &ofproto->groups) { | |
19187a71 | 5584 | cb(group, &replies); |
7395c052 NZ |
5585 | } |
5586 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5587 | } else { | |
5588 | if (ofproto_group_lookup(ofproto, group_id, &group)) { | |
19187a71 | 5589 | cb(group, &replies); |
809c7548 | 5590 | ofproto_group_unref(group); |
7395c052 NZ |
5591 | } |
5592 | } | |
7395c052 | 5593 | ofconn_send_replies(ofconn, &replies); |
7395c052 NZ |
5594 | } |
5595 | ||
5596 | static enum ofperr | |
19187a71 BP |
5597 | handle_group_stats_request(struct ofconn *ofconn, |
5598 | const struct ofp_header *request) | |
7395c052 | 5599 | { |
19187a71 BP |
5600 | uint32_t group_id; |
5601 | enum ofperr error; | |
7395c052 | 5602 | |
19187a71 BP |
5603 | error = ofputil_decode_group_stats_request(request, &group_id); |
5604 | if (error) { | |
5605 | return error; | |
7395c052 | 5606 | } |
7395c052 | 5607 | |
19187a71 BP |
5608 | handle_group_request(ofconn, request, group_id, append_group_stats); |
5609 | return 0; | |
5610 | } | |
5611 | ||
5612 | static void | |
5613 | append_group_desc(struct ofgroup *group, struct list *replies) | |
5614 | { | |
5615 | struct ofputil_group_desc gds; | |
7395c052 | 5616 | |
19187a71 BP |
5617 | gds.group_id = group->group_id; |
5618 | gds.type = group->type; | |
5619 | ofputil_append_group_desc_reply(&gds, &group->buckets, replies); | |
5620 | } | |
5621 | ||
5622 | static enum ofperr | |
5623 | handle_group_desc_stats_request(struct ofconn *ofconn, | |
5624 | const struct ofp_header *request) | |
5625 | { | |
5626 | handle_group_request(ofconn, request, | |
5627 | ofputil_decode_group_desc_request(request), | |
5628 | append_group_desc); | |
7395c052 NZ |
5629 | return 0; |
5630 | } | |
5631 | ||
5632 | static enum ofperr | |
5633 | handle_group_features_stats_request(struct ofconn *ofconn, | |
5634 | const struct ofp_header *request) | |
5635 | { | |
5636 | struct ofproto *p = ofconn_get_ofproto(ofconn); | |
5637 | struct ofpbuf *msg; | |
5638 | ||
5639 | msg = ofputil_encode_group_features_reply(&p->ogf, request); | |
5640 | if (msg) { | |
5641 | ofconn_send_reply(ofconn, msg); | |
5642 | } | |
5643 | ||
5644 | return 0; | |
5645 | } | |
5646 | ||
e8f9a7bb VG |
5647 | static enum ofperr |
5648 | handle_queue_get_config_request(struct ofconn *ofconn, | |
5649 | const struct ofp_header *oh) | |
5650 | { | |
5651 | struct ofproto *p = ofconn_get_ofproto(ofconn); | |
5652 | struct netdev_queue_dump queue_dump; | |
5653 | struct ofport *ofport; | |
5654 | unsigned int queue_id; | |
5655 | struct ofpbuf *reply; | |
5656 | struct smap details; | |
5657 | ofp_port_t request; | |
5658 | enum ofperr error; | |
5659 | ||
5660 | error = ofputil_decode_queue_get_config_request(oh, &request); | |
5661 | if (error) { | |
5662 | return error; | |
5663 | } | |
5664 | ||
5665 | ofport = ofproto_get_port(p, request); | |
5666 | if (!ofport) { | |
5667 | return OFPERR_OFPQOFC_BAD_PORT; | |
5668 | } | |
5669 | ||
5670 | reply = ofputil_encode_queue_get_config_reply(oh); | |
5671 | ||
5672 | smap_init(&details); | |
5673 | NETDEV_QUEUE_FOR_EACH (&queue_id, &details, &queue_dump, ofport->netdev) { | |
5674 | struct ofputil_queue_config queue; | |
5675 | ||
5676 | /* None of the existing queues have compatible properties, so we | |
5677 | * hard-code omitting min_rate and max_rate. */ | |
5678 | queue.queue_id = queue_id; | |
5679 | queue.min_rate = UINT16_MAX; | |
5680 | queue.max_rate = UINT16_MAX; | |
5681 | ofputil_append_queue_get_config_reply(reply, &queue); | |
5682 | } | |
5683 | smap_destroy(&details); | |
5684 | ||
5685 | ofconn_send_reply(ofconn, reply); | |
5686 | ||
5687 | return 0; | |
5688 | } | |
5689 | ||
809c7548 RW |
5690 | static enum ofperr |
5691 | init_group(struct ofproto *ofproto, struct ofputil_group_mod *gm, | |
5692 | struct ofgroup **ofgroup) | |
5693 | { | |
5694 | enum ofperr error; | |
eaf004bd | 5695 | const long long int now = time_msec(); |
809c7548 RW |
5696 | |
5697 | if (gm->group_id > OFPG_MAX) { | |
5698 | return OFPERR_OFPGMFC_INVALID_GROUP; | |
5699 | } | |
5700 | if (gm->type > OFPGT11_FF) { | |
5701 | return OFPERR_OFPGMFC_BAD_TYPE; | |
5702 | } | |
5703 | ||
5704 | *ofgroup = ofproto->ofproto_class->group_alloc(); | |
5705 | if (!*ofgroup) { | |
5706 | VLOG_WARN_RL(&rl, "%s: failed to allocate group", ofproto->name); | |
5707 | return OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
5708 | } | |
5709 | ||
eaf004bd AZ |
5710 | (*ofgroup)->ofproto = ofproto; |
5711 | *CONST_CAST(uint32_t *, &((*ofgroup)->group_id)) = gm->group_id; | |
5712 | *CONST_CAST(enum ofp11_group_type *, &(*ofgroup)->type) = gm->type; | |
5713 | *CONST_CAST(long long int *, &((*ofgroup)->created)) = now; | |
5714 | *CONST_CAST(long long int *, &((*ofgroup)->modified)) = now; | |
809c7548 RW |
5715 | ovs_refcount_init(&(*ofgroup)->ref_count); |
5716 | ||
5717 | list_move(&(*ofgroup)->buckets, &gm->buckets); | |
eaf004bd AZ |
5718 | *CONST_CAST(uint32_t *, &(*ofgroup)->n_buckets) = |
5719 | list_size(&(*ofgroup)->buckets); | |
809c7548 RW |
5720 | |
5721 | /* Construct called BEFORE any locks are held. */ | |
5722 | error = ofproto->ofproto_class->group_construct(*ofgroup); | |
5723 | if (error) { | |
5724 | ofputil_bucket_list_destroy(&(*ofgroup)->buckets); | |
5725 | ofproto->ofproto_class->group_dealloc(*ofgroup); | |
5726 | } | |
5727 | return error; | |
5728 | } | |
5729 | ||
6c5b90ce BP |
5730 | /* Implements the OFPGC11_ADD operation specified by 'gm', adding a group to |
5731 | * 'ofproto''s group table. Returns 0 on success or an OpenFlow error code on | |
5732 | * failure. */ | |
7395c052 NZ |
5733 | static enum ofperr |
5734 | add_group(struct ofproto *ofproto, struct ofputil_group_mod *gm) | |
5735 | { | |
5736 | struct ofgroup *ofgroup; | |
5737 | enum ofperr error; | |
5738 | ||
7395c052 | 5739 | /* Allocate new group and initialize it. */ |
809c7548 | 5740 | error = init_group(ofproto, gm, &ofgroup); |
7395c052 | 5741 | if (error) { |
809c7548 | 5742 | return error; |
7395c052 NZ |
5743 | } |
5744 | ||
5745 | /* We wrlock as late as possible to minimize the time we jam any other | |
5746 | * threads: No visible state changes before acquiring the lock. */ | |
5747 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
5748 | ||
5749 | if (ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) { | |
5750 | error = OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
5751 | goto unlock_out; | |
5752 | } | |
5753 | ||
7e9f8266 | 5754 | if (ofproto_group_exists__(ofproto, gm->group_id)) { |
7395c052 NZ |
5755 | error = OFPERR_OFPGMFC_GROUP_EXISTS; |
5756 | goto unlock_out; | |
5757 | } | |
5758 | ||
5759 | if (!error) { | |
5760 | /* Insert new group. */ | |
5761 | hmap_insert(&ofproto->groups, &ofgroup->hmap_node, | |
5762 | hash_int(ofgroup->group_id, 0)); | |
5763 | ofproto->n_groups[ofgroup->type]++; | |
5764 | ||
5765 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5766 | return error; | |
5767 | } | |
5768 | ||
5769 | unlock_out: | |
5770 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5771 | ofproto->ofproto_class->group_destruct(ofgroup); | |
7395c052 NZ |
5772 | ofputil_bucket_list_destroy(&ofgroup->buckets); |
5773 | ofproto->ofproto_class->group_dealloc(ofgroup); | |
5774 | ||
5775 | return error; | |
5776 | } | |
5777 | ||
6c5b90ce BP |
5778 | /* Implements OFPGC11_MODIFY. Returns 0 on success or an OpenFlow error code |
5779 | * on failure. | |
7395c052 | 5780 | * |
809c7548 RW |
5781 | * Note that the group is re-created and then replaces the old group in |
5782 | * ofproto's ofgroup hash map. Thus, the group is never altered while users of | |
6c5b90ce | 5783 | * the xlate module hold a pointer to the group. */ |
7395c052 NZ |
5784 | static enum ofperr |
5785 | modify_group(struct ofproto *ofproto, struct ofputil_group_mod *gm) | |
5786 | { | |
809c7548 | 5787 | struct ofgroup *ofgroup, *new_ofgroup, *retiring; |
7395c052 NZ |
5788 | enum ofperr error; |
5789 | ||
809c7548 RW |
5790 | error = init_group(ofproto, gm, &new_ofgroup); |
5791 | if (error) { | |
5792 | return error; | |
7395c052 NZ |
5793 | } |
5794 | ||
809c7548 | 5795 | retiring = new_ofgroup; |
7395c052 | 5796 | |
3fc3b679 AZ |
5797 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); |
5798 | if (!ofproto_group_lookup__(ofproto, gm->group_id, &ofgroup)) { | |
7395c052 | 5799 | error = OFPERR_OFPGMFC_UNKNOWN_GROUP; |
809c7548 | 5800 | goto out; |
7395c052 | 5801 | } |
809c7548 RW |
5802 | |
5803 | /* Ofproto's group write lock is held now. */ | |
7395c052 NZ |
5804 | if (ofgroup->type != gm->type |
5805 | && ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) { | |
5806 | error = OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
809c7548 | 5807 | goto out; |
7395c052 NZ |
5808 | } |
5809 | ||
809c7548 | 5810 | /* The group creation time does not change during modification. */ |
eaf004bd AZ |
5811 | *CONST_CAST(long long int *, &(new_ofgroup->created)) = ofgroup->created; |
5812 | *CONST_CAST(long long int *, &(new_ofgroup->modified)) = time_msec(); | |
7395c052 | 5813 | |
809c7548 RW |
5814 | error = ofproto->ofproto_class->group_modify(new_ofgroup); |
5815 | if (error) { | |
5816 | goto out; | |
5817 | } | |
7395c052 | 5818 | |
809c7548 RW |
5819 | retiring = ofgroup; |
5820 | /* Replace ofgroup in ofproto's groups hash map with new_ofgroup. */ | |
5821 | hmap_remove(&ofproto->groups, &ofgroup->hmap_node); | |
5822 | hmap_insert(&ofproto->groups, &new_ofgroup->hmap_node, | |
5823 | hash_int(new_ofgroup->group_id, 0)); | |
5824 | if (ofgroup->type != new_ofgroup->type) { | |
5825 | ofproto->n_groups[ofgroup->type]--; | |
5826 | ofproto->n_groups[new_ofgroup->type]++; | |
7395c052 NZ |
5827 | } |
5828 | ||
809c7548 RW |
5829 | out: |
5830 | ofproto_group_unref(retiring); | |
7395c052 | 5831 | ovs_rwlock_unlock(&ofproto->groups_rwlock); |
7395c052 NZ |
5832 | return error; |
5833 | } | |
5834 | ||
5835 | static void | |
5836 | delete_group__(struct ofproto *ofproto, struct ofgroup *ofgroup) | |
5837 | OVS_RELEASES(ofproto->groups_rwlock) | |
5838 | { | |
276f6518 SH |
5839 | struct match match; |
5840 | struct ofputil_flow_mod fm; | |
5841 | ||
5842 | /* Delete all flow entries containing this group in a group action */ | |
5843 | match_init_catchall(&match); | |
5844 | flow_mod_init(&fm, &match, 0, NULL, 0, OFPFC_DELETE); | |
cc40d06b | 5845 | fm.delete_reason = OFPRR_GROUP_DELETE; |
276f6518 | 5846 | fm.out_group = ofgroup->group_id; |
baae3d02 | 5847 | handle_flow_mod__(ofproto, &fm, NULL); |
276f6518 | 5848 | |
7395c052 NZ |
5849 | hmap_remove(&ofproto->groups, &ofgroup->hmap_node); |
5850 | /* No-one can find this group any more. */ | |
5851 | ofproto->n_groups[ofgroup->type]--; | |
5852 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
809c7548 | 5853 | ofproto_group_unref(ofgroup); |
7395c052 NZ |
5854 | } |
5855 | ||
6c5b90ce | 5856 | /* Implements OFPGC11_DELETE. */ |
7395c052 NZ |
5857 | static void |
5858 | delete_group(struct ofproto *ofproto, uint32_t group_id) | |
5859 | { | |
5860 | struct ofgroup *ofgroup; | |
5861 | ||
5862 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
5863 | if (group_id == OFPG_ALL) { | |
5864 | for (;;) { | |
5865 | struct hmap_node *node = hmap_first(&ofproto->groups); | |
5866 | if (!node) { | |
5867 | break; | |
5868 | } | |
5869 | ofgroup = CONTAINER_OF(node, struct ofgroup, hmap_node); | |
5870 | delete_group__(ofproto, ofgroup); | |
5871 | /* Lock for each node separately, so that we will not jam the | |
5872 | * other threads for too long time. */ | |
5873 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
5874 | } | |
5875 | } else { | |
5876 | HMAP_FOR_EACH_IN_BUCKET (ofgroup, hmap_node, | |
5877 | hash_int(group_id, 0), &ofproto->groups) { | |
5878 | if (ofgroup->group_id == group_id) { | |
5879 | delete_group__(ofproto, ofgroup); | |
5880 | return; | |
5881 | } | |
5882 | } | |
5883 | } | |
5884 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5885 | } | |
5886 | ||
5887 | static enum ofperr | |
5888 | handle_group_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
5889 | { | |
5890 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5891 | struct ofputil_group_mod gm; | |
5892 | enum ofperr error; | |
5893 | ||
5894 | error = reject_slave_controller(ofconn); | |
5895 | if (error) { | |
5896 | return error; | |
5897 | } | |
5898 | ||
5899 | error = ofputil_decode_group_mod(oh, &gm); | |
5900 | if (error) { | |
5901 | return error; | |
5902 | } | |
5903 | ||
5904 | switch (gm.command) { | |
5905 | case OFPGC11_ADD: | |
5906 | return add_group(ofproto, &gm); | |
5907 | ||
5908 | case OFPGC11_MODIFY: | |
5909 | return modify_group(ofproto, &gm); | |
5910 | ||
5911 | case OFPGC11_DELETE: | |
5912 | delete_group(ofproto, gm.group_id); | |
5913 | return 0; | |
5914 | ||
5915 | default: | |
5916 | if (gm.command > OFPGC11_DELETE) { | |
5917 | VLOG_WARN_RL(&rl, "%s: Invalid group_mod command type %d", | |
5918 | ofproto->name, gm.command); | |
5919 | } | |
5920 | return OFPERR_OFPGMFC_BAD_COMMAND; | |
5921 | } | |
5922 | } | |
5923 | ||
3c1bb396 BP |
5924 | enum ofputil_table_miss |
5925 | ofproto_table_get_miss_config(const struct ofproto *ofproto, uint8_t table_id) | |
6d328fa2 | 5926 | { |
3c1bb396 | 5927 | enum ofputil_table_miss value; |
afcea9ea JR |
5928 | |
5929 | atomic_read_relaxed(&ofproto->tables[table_id].miss_config, &value); | |
3c1bb396 | 5930 | return value; |
6d328fa2 SH |
5931 | } |
5932 | ||
67761761 SH |
5933 | static enum ofperr |
5934 | table_mod(struct ofproto *ofproto, const struct ofputil_table_mod *tm) | |
5935 | { | |
3c1bb396 | 5936 | if (!check_table_id(ofproto, tm->table_id)) { |
67761761 | 5937 | return OFPERR_OFPTMFC_BAD_TABLE; |
3c1bb396 BP |
5938 | } else if (tm->miss_config != OFPUTIL_TABLE_MISS_DEFAULT) { |
5939 | if (tm->table_id == OFPTT_ALL) { | |
5940 | int i; | |
5941 | for (i = 0; i < ofproto->n_tables; i++) { | |
afcea9ea JR |
5942 | atomic_store_relaxed(&ofproto->tables[i].miss_config, |
5943 | tm->miss_config); | |
3c1bb396 BP |
5944 | } |
5945 | } else { | |
afcea9ea JR |
5946 | atomic_store_relaxed(&ofproto->tables[tm->table_id].miss_config, |
5947 | tm->miss_config); | |
3c1bb396 | 5948 | } |
67761761 | 5949 | } |
67761761 SH |
5950 | return 0; |
5951 | } | |
5952 | ||
918f2b82 AZ |
5953 | static enum ofperr |
5954 | handle_table_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
5955 | { | |
67761761 | 5956 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
918f2b82 AZ |
5957 | struct ofputil_table_mod tm; |
5958 | enum ofperr error; | |
5959 | ||
5960 | error = reject_slave_controller(ofconn); | |
5961 | if (error) { | |
5962 | return error; | |
5963 | } | |
5964 | ||
5965 | error = ofputil_decode_table_mod(oh, &tm); | |
5966 | if (error) { | |
5967 | return error; | |
5968 | } | |
5969 | ||
67761761 | 5970 | return table_mod(ofproto, &tm); |
918f2b82 AZ |
5971 | } |
5972 | ||
777af88d AC |
5973 | static enum ofperr |
5974 | handle_bundle_control(struct ofconn *ofconn, const struct ofp_header *oh) | |
5975 | { | |
5976 | enum ofperr error; | |
5977 | struct ofputil_bundle_ctrl_msg bctrl; | |
5978 | struct ofpbuf *buf; | |
5979 | struct ofputil_bundle_ctrl_msg reply; | |
5980 | ||
5981 | error = ofputil_decode_bundle_ctrl(oh, &bctrl); | |
5982 | if (error) { | |
5983 | return error; | |
5984 | } | |
5985 | reply.flags = 0; | |
5986 | reply.bundle_id = bctrl.bundle_id; | |
5987 | ||
5988 | switch (bctrl.type) { | |
5989 | case OFPBCT_OPEN_REQUEST: | |
5990 | error = ofp_bundle_open(ofconn, bctrl.bundle_id, bctrl.flags); | |
5991 | reply.type = OFPBCT_OPEN_REPLY; | |
5992 | break; | |
5993 | case OFPBCT_CLOSE_REQUEST: | |
5994 | error = ofp_bundle_close(ofconn, bctrl.bundle_id, bctrl.flags); | |
5995 | reply.type = OFPBCT_CLOSE_REPLY;; | |
5996 | break; | |
5997 | case OFPBCT_COMMIT_REQUEST: | |
5998 | error = ofp_bundle_commit(ofconn, bctrl.bundle_id, bctrl.flags); | |
5999 | reply.type = OFPBCT_COMMIT_REPLY; | |
6000 | break; | |
6001 | case OFPBCT_DISCARD_REQUEST: | |
6002 | error = ofp_bundle_discard(ofconn, bctrl.bundle_id); | |
6003 | reply.type = OFPBCT_DISCARD_REPLY; | |
6004 | break; | |
6005 | ||
6006 | case OFPBCT_OPEN_REPLY: | |
6007 | case OFPBCT_CLOSE_REPLY: | |
6008 | case OFPBCT_COMMIT_REPLY: | |
6009 | case OFPBCT_DISCARD_REPLY: | |
6010 | return OFPERR_OFPBFC_BAD_TYPE; | |
6011 | break; | |
6012 | } | |
6013 | ||
6014 | if (!error) { | |
6015 | buf = ofputil_encode_bundle_ctrl_reply(oh, &reply); | |
6016 | ofconn_send_reply(ofconn, buf); | |
6017 | } | |
6018 | return error; | |
6019 | } | |
6020 | ||
6021 | ||
6022 | static enum ofperr | |
6023 | handle_bundle_add(struct ofconn *ofconn, const struct ofp_header *oh) | |
6024 | { | |
6025 | enum ofperr error; | |
6026 | struct ofputil_bundle_add_msg badd; | |
6027 | ||
6028 | error = ofputil_decode_bundle_add(oh, &badd); | |
6029 | if (error) { | |
6030 | return error; | |
6031 | } | |
6032 | ||
6033 | return ofp_bundle_add_message(ofconn, &badd); | |
6034 | } | |
6035 | ||
90bf1e07 | 6036 | static enum ofperr |
d1e2cf21 | 6037 | handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg) |
15aaf599 | 6038 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 6039 | { |
1f317cb5 | 6040 | const struct ofp_header *oh = ofpbuf_data(msg); |
982697a4 | 6041 | enum ofptype type; |
90bf1e07 | 6042 | enum ofperr error; |
064af421 | 6043 | |
982697a4 | 6044 | error = ofptype_decode(&type, oh); |
d1e2cf21 BP |
6045 | if (error) { |
6046 | return error; | |
6047 | } | |
ff3c2c63 YT |
6048 | if (oh->version >= OFP13_VERSION && ofpmsg_is_stat_request(oh) |
6049 | && ofpmp_more(oh)) { | |
6050 | /* We have no buffer implementation for multipart requests. | |
6051 | * Report overflow for requests which consists of multiple | |
6052 | * messages. */ | |
6053 | return OFPERR_OFPBRC_MULTIPART_BUFFER_OVERFLOW; | |
6054 | } | |
064af421 | 6055 | |
982697a4 | 6056 | switch (type) { |
d1e2cf21 | 6057 | /* OpenFlow requests. */ |
982697a4 | 6058 | case OFPTYPE_ECHO_REQUEST: |
d1e2cf21 | 6059 | return handle_echo_request(ofconn, oh); |
064af421 | 6060 | |
982697a4 | 6061 | case OFPTYPE_FEATURES_REQUEST: |
d1e2cf21 | 6062 | return handle_features_request(ofconn, oh); |
064af421 | 6063 | |
982697a4 | 6064 | case OFPTYPE_GET_CONFIG_REQUEST: |
d1e2cf21 | 6065 | return handle_get_config_request(ofconn, oh); |
064af421 | 6066 | |
982697a4 BP |
6067 | case OFPTYPE_SET_CONFIG: |
6068 | return handle_set_config(ofconn, oh); | |
064af421 | 6069 | |
982697a4 BP |
6070 | case OFPTYPE_PACKET_OUT: |
6071 | return handle_packet_out(ofconn, oh); | |
064af421 | 6072 | |
982697a4 | 6073 | case OFPTYPE_PORT_MOD: |
d1e2cf21 | 6074 | return handle_port_mod(ofconn, oh); |
064af421 | 6075 | |
982697a4 | 6076 | case OFPTYPE_FLOW_MOD: |
2e4f5fcf | 6077 | return handle_flow_mod(ofconn, oh); |
064af421 | 6078 | |
7395c052 NZ |
6079 | case OFPTYPE_GROUP_MOD: |
6080 | return handle_group_mod(ofconn, oh); | |
6081 | ||
918f2b82 AZ |
6082 | case OFPTYPE_TABLE_MOD: |
6083 | return handle_table_mod(ofconn, oh); | |
6084 | ||
9cae45dc JR |
6085 | case OFPTYPE_METER_MOD: |
6086 | return handle_meter_mod(ofconn, oh); | |
6087 | ||
982697a4 | 6088 | case OFPTYPE_BARRIER_REQUEST: |
d1e2cf21 | 6089 | return handle_barrier_request(ofconn, oh); |
064af421 | 6090 | |
6ea4776b JR |
6091 | case OFPTYPE_ROLE_REQUEST: |
6092 | return handle_role_request(ofconn, oh); | |
6093 | ||
d1e2cf21 | 6094 | /* OpenFlow replies. */ |
982697a4 | 6095 | case OFPTYPE_ECHO_REPLY: |
d1e2cf21 | 6096 | return 0; |
246e61ea | 6097 | |
d1e2cf21 | 6098 | /* Nicira extension requests. */ |
982697a4 | 6099 | case OFPTYPE_FLOW_MOD_TABLE_ID: |
6c1491fb | 6100 | return handle_nxt_flow_mod_table_id(ofconn, oh); |
d1e2cf21 | 6101 | |
982697a4 | 6102 | case OFPTYPE_SET_FLOW_FORMAT: |
d1e2cf21 BP |
6103 | return handle_nxt_set_flow_format(ofconn, oh); |
6104 | ||
982697a4 | 6105 | case OFPTYPE_SET_PACKET_IN_FORMAT: |
54834960 EJ |
6106 | return handle_nxt_set_packet_in_format(ofconn, oh); |
6107 | ||
982697a4 | 6108 | case OFPTYPE_SET_CONTROLLER_ID: |
a7349929 BP |
6109 | return handle_nxt_set_controller_id(ofconn, oh); |
6110 | ||
982697a4 | 6111 | case OFPTYPE_FLOW_AGE: |
f27f2134 BP |
6112 | /* Nothing to do. */ |
6113 | return 0; | |
6114 | ||
982697a4 | 6115 | case OFPTYPE_FLOW_MONITOR_CANCEL: |
2b07c8b1 BP |
6116 | return handle_flow_monitor_cancel(ofconn, oh); |
6117 | ||
982697a4 | 6118 | case OFPTYPE_SET_ASYNC_CONFIG: |
80d5aefd BP |
6119 | return handle_nxt_set_async_config(ofconn, oh); |
6120 | ||
c423b3b3 AC |
6121 | case OFPTYPE_GET_ASYNC_REQUEST: |
6122 | return handle_nxt_get_async_request(ofconn, oh); | |
6123 | ||
349adfb2 | 6124 | /* Statistics requests. */ |
982697a4 BP |
6125 | case OFPTYPE_DESC_STATS_REQUEST: |
6126 | return handle_desc_stats_request(ofconn, oh); | |
6127 | ||
6128 | case OFPTYPE_FLOW_STATS_REQUEST: | |
6129 | return handle_flow_stats_request(ofconn, oh); | |
6130 | ||
6131 | case OFPTYPE_AGGREGATE_STATS_REQUEST: | |
6132 | return handle_aggregate_stats_request(ofconn, oh); | |
6133 | ||
6134 | case OFPTYPE_TABLE_STATS_REQUEST: | |
6135 | return handle_table_stats_request(ofconn, oh); | |
6136 | ||
3c4e10fb BP |
6137 | case OFPTYPE_TABLE_FEATURES_STATS_REQUEST: |
6138 | return handle_table_features_request(ofconn, oh); | |
6139 | ||
982697a4 BP |
6140 | case OFPTYPE_PORT_STATS_REQUEST: |
6141 | return handle_port_stats_request(ofconn, oh); | |
6142 | ||
6143 | case OFPTYPE_QUEUE_STATS_REQUEST: | |
6144 | return handle_queue_stats_request(ofconn, oh); | |
6145 | ||
6146 | case OFPTYPE_PORT_DESC_STATS_REQUEST: | |
6147 | return handle_port_desc_stats_request(ofconn, oh); | |
6148 | ||
6149 | case OFPTYPE_FLOW_MONITOR_STATS_REQUEST: | |
6150 | return handle_flow_monitor_request(ofconn, oh); | |
6151 | ||
261bd854 BP |
6152 | case OFPTYPE_METER_STATS_REQUEST: |
6153 | case OFPTYPE_METER_CONFIG_STATS_REQUEST: | |
9cae45dc JR |
6154 | return handle_meter_request(ofconn, oh, type); |
6155 | ||
261bd854 | 6156 | case OFPTYPE_METER_FEATURES_STATS_REQUEST: |
9cae45dc JR |
6157 | return handle_meter_features_request(ofconn, oh); |
6158 | ||
261bd854 | 6159 | case OFPTYPE_GROUP_STATS_REQUEST: |
7395c052 NZ |
6160 | return handle_group_stats_request(ofconn, oh); |
6161 | ||
261bd854 | 6162 | case OFPTYPE_GROUP_DESC_STATS_REQUEST: |
7395c052 NZ |
6163 | return handle_group_desc_stats_request(ofconn, oh); |
6164 | ||
261bd854 | 6165 | case OFPTYPE_GROUP_FEATURES_STATS_REQUEST: |
7395c052 NZ |
6166 | return handle_group_features_stats_request(ofconn, oh); |
6167 | ||
7395c052 | 6168 | case OFPTYPE_QUEUE_GET_CONFIG_REQUEST: |
e8f9a7bb | 6169 | return handle_queue_get_config_request(ofconn, oh); |
2e1ae200 | 6170 | |
777af88d AC |
6171 | case OFPTYPE_BUNDLE_CONTROL: |
6172 | return handle_bundle_control(ofconn, oh); | |
6173 | ||
6174 | case OFPTYPE_BUNDLE_ADD_MESSAGE: | |
6175 | return handle_bundle_add(ofconn, oh); | |
6176 | ||
982697a4 BP |
6177 | case OFPTYPE_HELLO: |
6178 | case OFPTYPE_ERROR: | |
6179 | case OFPTYPE_FEATURES_REPLY: | |
6180 | case OFPTYPE_GET_CONFIG_REPLY: | |
6181 | case OFPTYPE_PACKET_IN: | |
6182 | case OFPTYPE_FLOW_REMOVED: | |
6183 | case OFPTYPE_PORT_STATUS: | |
6184 | case OFPTYPE_BARRIER_REPLY: | |
c545d38d | 6185 | case OFPTYPE_QUEUE_GET_CONFIG_REPLY: |
982697a4 BP |
6186 | case OFPTYPE_DESC_STATS_REPLY: |
6187 | case OFPTYPE_FLOW_STATS_REPLY: | |
6188 | case OFPTYPE_QUEUE_STATS_REPLY: | |
6189 | case OFPTYPE_PORT_STATS_REPLY: | |
6190 | case OFPTYPE_TABLE_STATS_REPLY: | |
6191 | case OFPTYPE_AGGREGATE_STATS_REPLY: | |
6192 | case OFPTYPE_PORT_DESC_STATS_REPLY: | |
6193 | case OFPTYPE_ROLE_REPLY: | |
6194 | case OFPTYPE_FLOW_MONITOR_PAUSED: | |
6195 | case OFPTYPE_FLOW_MONITOR_RESUMED: | |
6196 | case OFPTYPE_FLOW_MONITOR_STATS_REPLY: | |
2e1ae200 | 6197 | case OFPTYPE_GET_ASYNC_REPLY: |
261bd854 BP |
6198 | case OFPTYPE_GROUP_STATS_REPLY: |
6199 | case OFPTYPE_GROUP_DESC_STATS_REPLY: | |
6200 | case OFPTYPE_GROUP_FEATURES_STATS_REPLY: | |
6201 | case OFPTYPE_METER_STATS_REPLY: | |
6202 | case OFPTYPE_METER_CONFIG_STATS_REPLY: | |
6203 | case OFPTYPE_METER_FEATURES_STATS_REPLY: | |
6204 | case OFPTYPE_TABLE_FEATURES_STATS_REPLY: | |
252f3411 | 6205 | case OFPTYPE_ROLE_STATUS: |
064af421 | 6206 | default: |
76ec08e0 YT |
6207 | if (ofpmsg_is_stat_request(oh)) { |
6208 | return OFPERR_OFPBRC_BAD_STAT; | |
6209 | } else { | |
6210 | return OFPERR_OFPBRC_BAD_TYPE; | |
6211 | } | |
064af421 | 6212 | } |
d1e2cf21 | 6213 | } |
064af421 | 6214 | |
b20f4073 | 6215 | static void |
e03248b7 | 6216 | handle_openflow(struct ofconn *ofconn, const struct ofpbuf *ofp_msg) |
15aaf599 | 6217 | OVS_EXCLUDED(ofproto_mutex) |
d1e2cf21 BP |
6218 | { |
6219 | int error = handle_openflow__(ofconn, ofp_msg); | |
b20f4073 | 6220 | if (error) { |
1f317cb5 | 6221 | ofconn_send_error(ofconn, ofpbuf_data(ofp_msg), error); |
064af421 | 6222 | } |
d1e2cf21 | 6223 | COVERAGE_INC(ofproto_recv_openflow); |
7ee20df1 BP |
6224 | } |
6225 | \f | |
6226 | /* Asynchronous operations. */ | |
6227 | ||
834fe5cb BP |
6228 | static enum ofperr |
6229 | send_buffered_packet(struct ofconn *ofconn, uint32_t buffer_id, | |
6230 | struct rule *rule) | |
15aaf599 | 6231 | OVS_REQUIRES(ofproto_mutex) |
7ee20df1 | 6232 | { |
834fe5cb BP |
6233 | enum ofperr error = 0; |
6234 | if (ofconn && buffer_id != UINT32_MAX) { | |
6235 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
6236 | struct ofpbuf *packet; | |
6237 | ofp_port_t in_port; | |
b277c7cc | 6238 | |
834fe5cb BP |
6239 | error = ofconn_pktbuf_retrieve(ofconn, buffer_id, &packet, &in_port); |
6240 | if (packet) { | |
6241 | struct rule_execute *re; | |
b277c7cc | 6242 | |
834fe5cb | 6243 | ofproto_rule_ref(rule); |
b277c7cc | 6244 | |
834fe5cb BP |
6245 | re = xmalloc(sizeof *re); |
6246 | re->rule = rule; | |
6247 | re->in_port = in_port; | |
6248 | re->packet = packet; | |
b277c7cc | 6249 | |
834fe5cb BP |
6250 | if (!guarded_list_push_back(&ofproto->rule_executes, |
6251 | &re->list_node, 1024)) { | |
a2143702 | 6252 | ofproto_rule_unref(rule); |
834fe5cb BP |
6253 | ofpbuf_delete(re->packet); |
6254 | free(re); | |
e615b0a3 | 6255 | } |
af822017 | 6256 | } |
7ee20df1 | 6257 | } |
834fe5cb | 6258 | return error; |
7ee20df1 | 6259 | } |
064af421 | 6260 | \f |
064af421 | 6261 | static uint64_t |
fa60c019 | 6262 | pick_datapath_id(const struct ofproto *ofproto) |
064af421 | 6263 | { |
fa60c019 | 6264 | const struct ofport *port; |
064af421 | 6265 | |
abe529af | 6266 | port = ofproto_get_port(ofproto, OFPP_LOCAL); |
fa60c019 BP |
6267 | if (port) { |
6268 | uint8_t ea[ETH_ADDR_LEN]; | |
6269 | int error; | |
6270 | ||
6271 | error = netdev_get_etheraddr(port->netdev, ea); | |
064af421 BP |
6272 | if (!error) { |
6273 | return eth_addr_to_uint64(ea); | |
6274 | } | |
fbfa2911 BP |
6275 | VLOG_WARN("%s: could not get MAC address for %s (%s)", |
6276 | ofproto->name, netdev_get_name(port->netdev), | |
10a89ef0 | 6277 | ovs_strerror(error)); |
064af421 | 6278 | } |
fa60c019 | 6279 | return ofproto->fallback_dpid; |
064af421 BP |
6280 | } |
6281 | ||
6282 | static uint64_t | |
6283 | pick_fallback_dpid(void) | |
6284 | { | |
6285 | uint8_t ea[ETH_ADDR_LEN]; | |
70150daf | 6286 | eth_addr_nicira_random(ea); |
064af421 BP |
6287 | return eth_addr_to_uint64(ea); |
6288 | } | |
6289 | \f | |
254750ce BP |
6290 | /* Table overflow policy. */ |
6291 | ||
ad3efdcb EJ |
6292 | /* Chooses and updates 'rulep' with a rule to evict from 'table'. Sets 'rulep' |
6293 | * to NULL if the table is not configured to evict rules or if the table | |
6294 | * contains no evictable rules. (Rules with a readlock on their evict rwlock, | |
6295 | * or with no timeouts are not evictable.) */ | |
6296 | static bool | |
6297 | choose_rule_to_evict(struct oftable *table, struct rule **rulep) | |
15aaf599 | 6298 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6299 | { |
6300 | struct eviction_group *evg; | |
6301 | ||
ad3efdcb | 6302 | *rulep = NULL; |
254750ce | 6303 | if (!table->eviction_fields) { |
ad3efdcb | 6304 | return false; |
254750ce BP |
6305 | } |
6306 | ||
6307 | /* In the common case, the outer and inner loops here will each be entered | |
6308 | * exactly once: | |
6309 | * | |
6310 | * - The inner loop normally "return"s in its first iteration. If the | |
6311 | * eviction group has any evictable rules, then it always returns in | |
6312 | * some iteration. | |
6313 | * | |
6314 | * - The outer loop only iterates more than once if the largest eviction | |
6315 | * group has no evictable rules. | |
6316 | * | |
6317 | * - The outer loop can exit only if table's 'max_flows' is all filled up | |
afe2143d | 6318 | * by unevictable rules. */ |
254750ce BP |
6319 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { |
6320 | struct rule *rule; | |
6321 | ||
6322 | HEAP_FOR_EACH (rule, evg_node, &evg->rules) { | |
15aaf599 BP |
6323 | *rulep = rule; |
6324 | return true; | |
254750ce BP |
6325 | } |
6326 | } | |
6327 | ||
ad3efdcb | 6328 | return false; |
254750ce | 6329 | } |
254750ce BP |
6330 | \f |
6331 | /* Eviction groups. */ | |
6332 | ||
6333 | /* Returns the priority to use for an eviction_group that contains 'n_rules' | |
6334 | * rules. The priority contains low-order random bits to ensure that eviction | |
6335 | * groups with the same number of rules are prioritized randomly. */ | |
6336 | static uint32_t | |
6337 | eviction_group_priority(size_t n_rules) | |
6338 | { | |
6339 | uint16_t size = MIN(UINT16_MAX, n_rules); | |
6340 | return (size << 16) | random_uint16(); | |
6341 | } | |
6342 | ||
6343 | /* Updates 'evg', an eviction_group within 'table', following a change that | |
6344 | * adds or removes rules in 'evg'. */ | |
6345 | static void | |
6346 | eviction_group_resized(struct oftable *table, struct eviction_group *evg) | |
15aaf599 | 6347 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6348 | { |
6349 | heap_change(&table->eviction_groups_by_size, &evg->size_node, | |
6350 | eviction_group_priority(heap_count(&evg->rules))); | |
6351 | } | |
6352 | ||
6353 | /* Destroys 'evg', an eviction_group within 'table': | |
6354 | * | |
6355 | * - Removes all the rules, if any, from 'evg'. (It doesn't destroy the | |
6356 | * rules themselves, just removes them from the eviction group.) | |
6357 | * | |
6358 | * - Removes 'evg' from 'table'. | |
6359 | * | |
6360 | * - Frees 'evg'. */ | |
6361 | static void | |
6362 | eviction_group_destroy(struct oftable *table, struct eviction_group *evg) | |
15aaf599 | 6363 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6364 | { |
6365 | while (!heap_is_empty(&evg->rules)) { | |
6366 | struct rule *rule; | |
6367 | ||
6368 | rule = CONTAINER_OF(heap_pop(&evg->rules), struct rule, evg_node); | |
6369 | rule->eviction_group = NULL; | |
6370 | } | |
6371 | hmap_remove(&table->eviction_groups_by_id, &evg->id_node); | |
6372 | heap_remove(&table->eviction_groups_by_size, &evg->size_node); | |
6373 | heap_destroy(&evg->rules); | |
6374 | free(evg); | |
6375 | } | |
6376 | ||
6377 | /* Removes 'rule' from its eviction group, if any. */ | |
6378 | static void | |
6379 | eviction_group_remove_rule(struct rule *rule) | |
15aaf599 | 6380 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6381 | { |
6382 | if (rule->eviction_group) { | |
6383 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
6384 | struct eviction_group *evg = rule->eviction_group; | |
6385 | ||
6386 | rule->eviction_group = NULL; | |
6387 | heap_remove(&evg->rules, &rule->evg_node); | |
6388 | if (heap_is_empty(&evg->rules)) { | |
6389 | eviction_group_destroy(table, evg); | |
6390 | } else { | |
6391 | eviction_group_resized(table, evg); | |
6392 | } | |
6393 | } | |
6394 | } | |
6395 | ||
6396 | /* Hashes the 'rule''s values for the eviction_fields of 'rule''s table, and | |
6397 | * returns the hash value. */ | |
6398 | static uint32_t | |
6399 | eviction_group_hash_rule(struct rule *rule) | |
15aaf599 | 6400 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6401 | { |
6402 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
6403 | const struct mf_subfield *sf; | |
5cb7a798 | 6404 | struct flow flow; |
254750ce BP |
6405 | uint32_t hash; |
6406 | ||
6407 | hash = table->eviction_group_id_basis; | |
5cb7a798 | 6408 | miniflow_expand(&rule->cr.match.flow, &flow); |
254750ce BP |
6409 | for (sf = table->eviction_fields; |
6410 | sf < &table->eviction_fields[table->n_eviction_fields]; | |
6411 | sf++) | |
6412 | { | |
5cb7a798 | 6413 | if (mf_are_prereqs_ok(sf->field, &flow)) { |
254750ce BP |
6414 | union mf_value value; |
6415 | ||
5cb7a798 | 6416 | mf_get_value(sf->field, &flow, &value); |
254750ce BP |
6417 | if (sf->ofs) { |
6418 | bitwise_zero(&value, sf->field->n_bytes, 0, sf->ofs); | |
6419 | } | |
6420 | if (sf->ofs + sf->n_bits < sf->field->n_bytes * 8) { | |
6421 | unsigned int start = sf->ofs + sf->n_bits; | |
6422 | bitwise_zero(&value, sf->field->n_bytes, start, | |
6423 | sf->field->n_bytes * 8 - start); | |
6424 | } | |
6425 | hash = hash_bytes(&value, sf->field->n_bytes, hash); | |
6426 | } else { | |
6427 | hash = hash_int(hash, 0); | |
6428 | } | |
6429 | } | |
6430 | ||
6431 | return hash; | |
6432 | } | |
6433 | ||
6434 | /* Returns an eviction group within 'table' with the given 'id', creating one | |
6435 | * if necessary. */ | |
6436 | static struct eviction_group * | |
6437 | eviction_group_find(struct oftable *table, uint32_t id) | |
15aaf599 | 6438 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6439 | { |
6440 | struct eviction_group *evg; | |
6441 | ||
6442 | HMAP_FOR_EACH_WITH_HASH (evg, id_node, id, &table->eviction_groups_by_id) { | |
6443 | return evg; | |
6444 | } | |
6445 | ||
6446 | evg = xmalloc(sizeof *evg); | |
6447 | hmap_insert(&table->eviction_groups_by_id, &evg->id_node, id); | |
6448 | heap_insert(&table->eviction_groups_by_size, &evg->size_node, | |
6449 | eviction_group_priority(0)); | |
6450 | heap_init(&evg->rules); | |
6451 | ||
6452 | return evg; | |
6453 | } | |
6454 | ||
6455 | /* Returns an eviction priority for 'rule'. The return value should be | |
6456 | * interpreted so that higher priorities make a rule more attractive candidates | |
dc437090 JR |
6457 | * for eviction. |
6458 | * Called only if have a timeout. */ | |
254750ce | 6459 | static uint32_t |
dc437090 | 6460 | rule_eviction_priority(struct ofproto *ofproto, struct rule *rule) |
15aaf599 | 6461 | OVS_REQUIRES(ofproto_mutex) |
254750ce | 6462 | { |
dc437090 JR |
6463 | long long int expiration = LLONG_MAX; |
6464 | long long int modified; | |
254750ce BP |
6465 | uint32_t expiration_offset; |
6466 | ||
dc437090 | 6467 | /* 'modified' needs protection even when we hold 'ofproto_mutex'. */ |
d10976b7 | 6468 | ovs_mutex_lock(&rule->mutex); |
dc437090 | 6469 | modified = rule->modified; |
d10976b7 | 6470 | ovs_mutex_unlock(&rule->mutex); |
dc437090 JR |
6471 | |
6472 | if (rule->hard_timeout) { | |
6473 | expiration = modified + rule->hard_timeout * 1000; | |
6474 | } | |
6475 | if (rule->idle_timeout) { | |
6476 | uint64_t packets, bytes; | |
6477 | long long int used; | |
6478 | long long int idle_expiration; | |
6479 | ||
6480 | ofproto->ofproto_class->rule_get_stats(rule, &packets, &bytes, &used); | |
6481 | idle_expiration = used + rule->idle_timeout * 1000; | |
6482 | expiration = MIN(expiration, idle_expiration); | |
6483 | } | |
6484 | ||
254750ce BP |
6485 | if (expiration == LLONG_MAX) { |
6486 | return 0; | |
6487 | } | |
6488 | ||
6489 | /* Calculate the time of expiration as a number of (approximate) seconds | |
6490 | * after program startup. | |
6491 | * | |
6492 | * This should work OK for program runs that last UINT32_MAX seconds or | |
6493 | * less. Therefore, please restart OVS at least once every 136 years. */ | |
6494 | expiration_offset = (expiration >> 10) - (time_boot_msec() >> 10); | |
6495 | ||
6496 | /* Invert the expiration offset because we're using a max-heap. */ | |
6497 | return UINT32_MAX - expiration_offset; | |
6498 | } | |
6499 | ||
6500 | /* Adds 'rule' to an appropriate eviction group for its oftable's | |
6501 | * configuration. Does nothing if 'rule''s oftable doesn't have eviction | |
6502 | * enabled, or if 'rule' is a permanent rule (one that will never expire on its | |
6503 | * own). | |
6504 | * | |
6505 | * The caller must ensure that 'rule' is not already in an eviction group. */ | |
6506 | static void | |
6507 | eviction_group_add_rule(struct rule *rule) | |
15aaf599 | 6508 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6509 | { |
6510 | struct ofproto *ofproto = rule->ofproto; | |
6511 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
a3779dbc | 6512 | bool has_timeout; |
254750ce | 6513 | |
dc437090 JR |
6514 | /* Timeouts may be modified only when holding 'ofproto_mutex'. We have it |
6515 | * so no additional protection is needed. */ | |
a3779dbc | 6516 | has_timeout = rule->hard_timeout || rule->idle_timeout; |
a3779dbc EJ |
6517 | |
6518 | if (table->eviction_fields && has_timeout) { | |
254750ce BP |
6519 | struct eviction_group *evg; |
6520 | ||
6521 | evg = eviction_group_find(table, eviction_group_hash_rule(rule)); | |
6522 | ||
6523 | rule->eviction_group = evg; | |
6524 | heap_insert(&evg->rules, &rule->evg_node, | |
dc437090 | 6525 | rule_eviction_priority(ofproto, rule)); |
254750ce BP |
6526 | eviction_group_resized(table, evg); |
6527 | } | |
6528 | } | |
6529 | \f | |
d0918789 BP |
6530 | /* oftables. */ |
6531 | ||
6532 | /* Initializes 'table'. */ | |
6533 | static void | |
6534 | oftable_init(struct oftable *table) | |
6535 | { | |
5c67e4af | 6536 | memset(table, 0, sizeof *table); |
476f36e8 | 6537 | classifier_init(&table->cls, flow_segment_u32s); |
ec1c5c7e | 6538 | table->max_flows = UINT_MAX; |
3c1bb396 | 6539 | atomic_init(&table->miss_config, OFPUTIL_TABLE_MISS_DEFAULT); |
f017d986 | 6540 | |
f017d986 JR |
6541 | classifier_set_prefix_fields(&table->cls, default_prefix_fields, |
6542 | ARRAY_SIZE(default_prefix_fields)); | |
d611866c SH |
6543 | |
6544 | atomic_init(&table->n_matched, 0); | |
6545 | atomic_init(&table->n_missed, 0); | |
d0918789 BP |
6546 | } |
6547 | ||
254750ce | 6548 | /* Destroys 'table', including its classifier and eviction groups. |
d0918789 BP |
6549 | * |
6550 | * The caller is responsible for freeing 'table' itself. */ | |
6551 | static void | |
6552 | oftable_destroy(struct oftable *table) | |
6553 | { | |
cb22974d | 6554 | ovs_assert(classifier_is_empty(&table->cls)); |
254750ce | 6555 | oftable_disable_eviction(table); |
d0918789 | 6556 | classifier_destroy(&table->cls); |
254750ce BP |
6557 | free(table->name); |
6558 | } | |
6559 | ||
6560 | /* Changes the name of 'table' to 'name'. If 'name' is NULL or the empty | |
6561 | * string, then 'table' will use its default name. | |
6562 | * | |
6563 | * This only affects the name exposed for a table exposed through the OpenFlow | |
6564 | * OFPST_TABLE (as printed by "ovs-ofctl dump-tables"). */ | |
6565 | static void | |
6566 | oftable_set_name(struct oftable *table, const char *name) | |
6567 | { | |
6568 | if (name && name[0]) { | |
6569 | int len = strnlen(name, OFP_MAX_TABLE_NAME_LEN); | |
6570 | if (!table->name || strncmp(name, table->name, len)) { | |
6571 | free(table->name); | |
6572 | table->name = xmemdup0(name, len); | |
6573 | } | |
6574 | } else { | |
6575 | free(table->name); | |
6576 | table->name = NULL; | |
6577 | } | |
6578 | } | |
6579 | ||
6580 | /* oftables support a choice of two policies when adding a rule would cause the | |
6581 | * number of flows in the table to exceed the configured maximum number: either | |
6582 | * they can refuse to add the new flow or they can evict some existing flow. | |
6583 | * This function configures the former policy on 'table'. */ | |
6584 | static void | |
6585 | oftable_disable_eviction(struct oftable *table) | |
15aaf599 | 6586 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6587 | { |
6588 | if (table->eviction_fields) { | |
6589 | struct eviction_group *evg, *next; | |
6590 | ||
6591 | HMAP_FOR_EACH_SAFE (evg, next, id_node, | |
6592 | &table->eviction_groups_by_id) { | |
6593 | eviction_group_destroy(table, evg); | |
6594 | } | |
6595 | hmap_destroy(&table->eviction_groups_by_id); | |
6596 | heap_destroy(&table->eviction_groups_by_size); | |
6597 | ||
6598 | free(table->eviction_fields); | |
6599 | table->eviction_fields = NULL; | |
6600 | table->n_eviction_fields = 0; | |
6601 | } | |
6602 | } | |
6603 | ||
6604 | /* oftables support a choice of two policies when adding a rule would cause the | |
6605 | * number of flows in the table to exceed the configured maximum number: either | |
6606 | * they can refuse to add the new flow or they can evict some existing flow. | |
6607 | * This function configures the latter policy on 'table', with fairness based | |
6608 | * on the values of the 'n_fields' fields specified in 'fields'. (Specifying | |
6609 | * 'n_fields' as 0 disables fairness.) */ | |
6610 | static void | |
6611 | oftable_enable_eviction(struct oftable *table, | |
6612 | const struct mf_subfield *fields, size_t n_fields) | |
15aaf599 | 6613 | OVS_REQUIRES(ofproto_mutex) |
254750ce | 6614 | { |
254750ce BP |
6615 | struct rule *rule; |
6616 | ||
6617 | if (table->eviction_fields | |
6618 | && n_fields == table->n_eviction_fields | |
6619 | && (!n_fields | |
6620 | || !memcmp(fields, table->eviction_fields, | |
6621 | n_fields * sizeof *fields))) { | |
6622 | /* No change. */ | |
6623 | return; | |
6624 | } | |
6625 | ||
6626 | oftable_disable_eviction(table); | |
6627 | ||
6628 | table->n_eviction_fields = n_fields; | |
6629 | table->eviction_fields = xmemdup(fields, n_fields * sizeof *fields); | |
6630 | ||
6631 | table->eviction_group_id_basis = random_uint32(); | |
6632 | hmap_init(&table->eviction_groups_by_id); | |
6633 | heap_init(&table->eviction_groups_by_size); | |
6634 | ||
5f0476ce | 6635 | CLS_FOR_EACH (rule, cr, &table->cls) { |
254750ce BP |
6636 | eviction_group_add_rule(rule); |
6637 | } | |
d0918789 BP |
6638 | } |
6639 | ||
6640 | /* Removes 'rule' from the oftable that contains it. */ | |
6641 | static void | |
8b81d1ef | 6642 | oftable_remove_rule__(struct ofproto *ofproto, struct rule *rule) |
15aaf599 | 6643 | OVS_REQUIRES(ofproto_mutex) |
d0918789 | 6644 | { |
8b81d1ef BP |
6645 | struct classifier *cls = &ofproto->tables[rule->table_id].cls; |
6646 | ||
49a0e0eb | 6647 | classifier_remove(cls, CONST_CAST(struct cls_rule *, &rule->cr)); |
2c916028 | 6648 | |
98eaac36 | 6649 | cookies_remove(ofproto, rule); |
2c916028 | 6650 | |
254750ce | 6651 | eviction_group_remove_rule(rule); |
e503cc19 SH |
6652 | if (!list_is_empty(&rule->expirable)) { |
6653 | list_remove(&rule->expirable); | |
6654 | } | |
9cae45dc JR |
6655 | if (!list_is_empty(&rule->meter_list_node)) { |
6656 | list_remove(&rule->meter_list_node); | |
51b50dfd | 6657 | list_init(&rule->meter_list_node); |
9cae45dc | 6658 | } |
d0918789 BP |
6659 | } |
6660 | ||
0b4f2078 EJ |
6661 | static void |
6662 | oftable_remove_rule(struct rule *rule) | |
15aaf599 | 6663 | OVS_REQUIRES(ofproto_mutex) |
0b4f2078 | 6664 | { |
8b81d1ef | 6665 | oftable_remove_rule__(rule->ofproto, rule); |
0b4f2078 | 6666 | } |
d0918789 | 6667 | \f |
abe529af | 6668 | /* unixctl commands. */ |
7aa697dd | 6669 | |
abe529af | 6670 | struct ofproto * |
2ac6bedd | 6671 | ofproto_lookup(const char *name) |
7aa697dd | 6672 | { |
2ac6bedd | 6673 | struct ofproto *ofproto; |
7aa697dd | 6674 | |
2ac6bedd BP |
6675 | HMAP_FOR_EACH_WITH_HASH (ofproto, hmap_node, hash_string(name, 0), |
6676 | &all_ofprotos) { | |
6677 | if (!strcmp(ofproto->name, name)) { | |
6678 | return ofproto; | |
6679 | } | |
7aa697dd | 6680 | } |
2ac6bedd | 6681 | return NULL; |
7aa697dd BP |
6682 | } |
6683 | ||
6684 | static void | |
0e15264f BP |
6685 | ofproto_unixctl_list(struct unixctl_conn *conn, int argc OVS_UNUSED, |
6686 | const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED) | |
7aa697dd | 6687 | { |
7aa697dd | 6688 | struct ofproto *ofproto; |
7aa697dd | 6689 | struct ds results; |
7aa697dd | 6690 | |
7aa697dd | 6691 | ds_init(&results); |
2ac6bedd BP |
6692 | HMAP_FOR_EACH (ofproto, hmap_node, &all_ofprotos) { |
6693 | ds_put_format(&results, "%s\n", ofproto->name); | |
7aa697dd | 6694 | } |
bde9f75d | 6695 | unixctl_command_reply(conn, ds_cstr(&results)); |
7aa697dd | 6696 | ds_destroy(&results); |
7aa697dd BP |
6697 | } |
6698 | ||
6699 | static void | |
6700 | ofproto_unixctl_init(void) | |
6701 | { | |
6702 | static bool registered; | |
6703 | if (registered) { | |
6704 | return; | |
6705 | } | |
6706 | registered = true; | |
6707 | ||
0e15264f BP |
6708 | unixctl_command_register("ofproto/list", "", 0, 0, |
6709 | ofproto_unixctl_list, NULL); | |
064af421 | 6710 | } |
52a90c29 BP |
6711 | \f |
6712 | /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.) | |
6713 | * | |
6714 | * This is deprecated. It is only for compatibility with broken device drivers | |
6715 | * in old versions of Linux that do not properly support VLANs when VLAN | |
6716 | * devices are not used. When broken device drivers are no longer in | |
6717 | * widespread use, we will delete these interfaces. */ | |
6718 | ||
6719 | /* Sets a 1-bit in the 4096-bit 'vlan_bitmap' for each VLAN ID that is matched | |
6720 | * (exactly) by an OpenFlow rule in 'ofproto'. */ | |
6721 | void | |
6722 | ofproto_get_vlan_usage(struct ofproto *ofproto, unsigned long int *vlan_bitmap) | |
6723 | { | |
ac4aa4c8 JR |
6724 | struct match match; |
6725 | struct cls_rule target; | |
d0918789 | 6726 | const struct oftable *oftable; |
52a90c29 | 6727 | |
ac4aa4c8 JR |
6728 | match_init_catchall(&match); |
6729 | match_set_vlan_vid_masked(&match, htons(VLAN_CFI), htons(VLAN_CFI)); | |
6730 | cls_rule_init(&target, &match, 0); | |
6731 | ||
52a90c29 BP |
6732 | free(ofproto->vlan_bitmap); |
6733 | ofproto->vlan_bitmap = bitmap_allocate(4096); | |
6734 | ofproto->vlans_changed = false; | |
6735 | ||
d0918789 | 6736 | OFPROTO_FOR_EACH_TABLE (oftable, ofproto) { |
ac4aa4c8 | 6737 | struct rule *rule; |
52a90c29 | 6738 | |
5f0476ce | 6739 | CLS_FOR_EACH_TARGET (rule, cr, &oftable->cls, &target) { |
ac4aa4c8 JR |
6740 | if (minimask_get_vid_mask(&rule->cr.match.mask) == VLAN_VID_MASK) { |
6741 | uint16_t vid = miniflow_get_vid(&rule->cr.match.flow); | |
6742 | ||
6743 | bitmap_set1(vlan_bitmap, vid); | |
6744 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
52a90c29 BP |
6745 | } |
6746 | } | |
6747 | } | |
059ef3c6 EJ |
6748 | |
6749 | cls_rule_destroy(&target); | |
52a90c29 BP |
6750 | } |
6751 | ||
6752 | /* Returns true if new VLANs have come into use by the flow table since the | |
6753 | * last call to ofproto_get_vlan_usage(). | |
6754 | * | |
6755 | * We don't track when old VLANs stop being used. */ | |
6756 | bool | |
6757 | ofproto_has_vlan_usage_changed(const struct ofproto *ofproto) | |
6758 | { | |
6759 | return ofproto->vlans_changed; | |
6760 | } | |
6761 | ||
6762 | /* Configures a VLAN splinter binding between the ports identified by OpenFlow | |
6763 | * port numbers 'vlandev_ofp_port' and 'realdev_ofp_port'. If | |
6764 | * 'realdev_ofp_port' is nonzero, then the VLAN device is enslaved to the real | |
6765 | * device as a VLAN splinter for VLAN ID 'vid'. If 'realdev_ofp_port' is zero, | |
6766 | * then the VLAN device is un-enslaved. */ | |
6767 | int | |
4e022ec0 AW |
6768 | ofproto_port_set_realdev(struct ofproto *ofproto, ofp_port_t vlandev_ofp_port, |
6769 | ofp_port_t realdev_ofp_port, int vid) | |
52a90c29 BP |
6770 | { |
6771 | struct ofport *ofport; | |
6772 | int error; | |
6773 | ||
cb22974d | 6774 | ovs_assert(vlandev_ofp_port != realdev_ofp_port); |
52a90c29 BP |
6775 | |
6776 | ofport = ofproto_get_port(ofproto, vlandev_ofp_port); | |
6777 | if (!ofport) { | |
6778 | VLOG_WARN("%s: cannot set realdev on nonexistent port %"PRIu16, | |
6779 | ofproto->name, vlandev_ofp_port); | |
6780 | return EINVAL; | |
6781 | } | |
6782 | ||
6783 | if (!ofproto->ofproto_class->set_realdev) { | |
6784 | if (!vlandev_ofp_port) { | |
6785 | return 0; | |
6786 | } | |
6787 | VLOG_WARN("%s: vlan splinters not supported", ofproto->name); | |
6788 | return EOPNOTSUPP; | |
6789 | } | |
6790 | ||
6791 | error = ofproto->ofproto_class->set_realdev(ofport, realdev_ofp_port, vid); | |
6792 | if (error) { | |
6793 | VLOG_WARN("%s: setting realdev on port %"PRIu16" (%s) failed (%s)", | |
6794 | ofproto->name, vlandev_ofp_port, | |
10a89ef0 | 6795 | netdev_get_name(ofport->netdev), ovs_strerror(error)); |
52a90c29 BP |
6796 | } |
6797 | return error; | |
6798 | } |