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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, | |
eb391b76 | 156 | const struct match *match, int priority, |
a9b22b7f BP |
157 | ovs_be64 cookie, ovs_be64 cookie_mask, |
158 | ofp_port_t out_port, uint32_t out_group); | |
dd51dae2 BP |
159 | static void rule_criteria_require_rw(struct rule_criteria *, |
160 | bool can_write_readonly); | |
a9b22b7f BP |
161 | static void rule_criteria_destroy(struct rule_criteria *); |
162 | ||
35f48b8b BP |
163 | static enum ofperr collect_rules_loose(struct ofproto *, |
164 | const struct rule_criteria *, | |
165 | struct rule_collection *); | |
166 | ||
15aaf599 BP |
167 | /* A packet that needs to be passed to rule_execute(). |
168 | * | |
169 | * (We can't do this immediately from ofopgroup_complete() because that holds | |
170 | * ofproto_mutex, which rule_execute() needs released.) */ | |
35412852 BP |
171 | struct rule_execute { |
172 | struct list list_node; /* In struct ofproto's "rule_executes" list. */ | |
173 | struct rule *rule; /* Owns a reference to the rule. */ | |
174 | ofp_port_t in_port; | |
175 | struct ofpbuf *packet; /* Owns the packet. */ | |
176 | }; | |
177 | ||
15aaf599 | 178 | static void run_rule_executes(struct ofproto *) OVS_EXCLUDED(ofproto_mutex); |
35412852 BP |
179 | static void destroy_rule_executes(struct ofproto *); |
180 | ||
35f48b8b BP |
181 | struct learned_cookie { |
182 | union { | |
183 | /* In struct ofproto's 'learned_cookies' hmap. */ | |
184 | struct hmap_node hmap_node OVS_GUARDED_BY(ofproto_mutex); | |
185 | ||
186 | /* In 'dead_cookies' list when removed from hmap. */ | |
187 | struct list list_node; | |
188 | } u; | |
189 | ||
190 | /* Key. */ | |
191 | ovs_be64 cookie OVS_GUARDED_BY(ofproto_mutex); | |
192 | uint8_t table_id OVS_GUARDED_BY(ofproto_mutex); | |
193 | ||
194 | /* Number of references from "learn" actions. | |
195 | * | |
196 | * When this drops to 0, all of the flows in 'table_id' with the specified | |
197 | * 'cookie' are deleted. */ | |
198 | int n OVS_GUARDED_BY(ofproto_mutex); | |
199 | }; | |
200 | ||
201 | static const struct ofpact_learn *next_learn_with_delete( | |
202 | const struct rule_actions *, const struct ofpact_learn *start); | |
203 | ||
204 | static void learned_cookies_inc(struct ofproto *, const struct rule_actions *) | |
205 | OVS_REQUIRES(ofproto_mutex); | |
206 | static void learned_cookies_dec(struct ofproto *, const struct rule_actions *, | |
207 | struct list *dead_cookies) | |
208 | OVS_REQUIRES(ofproto_mutex); | |
209 | static void learned_cookies_flush(struct ofproto *, struct list *dead_cookies) | |
210 | OVS_REQUIRES(ofproto_mutex); | |
211 | ||
d0918789 | 212 | /* ofport. */ |
15aaf599 | 213 | static void ofport_destroy__(struct ofport *) OVS_EXCLUDED(ofproto_mutex); |
d0918789 BP |
214 | static void ofport_destroy(struct ofport *); |
215 | ||
216 | static void update_port(struct ofproto *, const char *devname); | |
217 | static int init_ports(struct ofproto *); | |
218 | static void reinit_ports(struct ofproto *); | |
7ee20df1 | 219 | |
fdcea803 GS |
220 | static long long int ofport_get_usage(const struct ofproto *, |
221 | ofp_port_t ofp_port); | |
222 | static void ofport_set_usage(struct ofproto *, ofp_port_t ofp_port, | |
223 | long long int last_used); | |
865b26a4 | 224 | static void ofport_remove_usage(struct ofproto *, ofp_port_t ofp_port); |
fdcea803 GS |
225 | |
226 | /* Ofport usage. | |
227 | * | |
228 | * Keeps track of the currently used and recently used ofport values and is | |
229 | * used to prevent immediate recycling of ofport values. */ | |
230 | struct ofport_usage { | |
231 | struct hmap_node hmap_node; /* In struct ofproto's "ofport_usage" hmap. */ | |
232 | ofp_port_t ofp_port; /* OpenFlow port number. */ | |
233 | long long int last_used; /* Last time the 'ofp_port' was used. LLONG_MAX | |
234 | represents in-use ofports. */ | |
235 | }; | |
236 | ||
254750ce | 237 | /* rule. */ |
254750ce | 238 | static void ofproto_rule_send_removed(struct rule *, uint8_t reason); |
834fe5cb | 239 | static bool rule_is_readonly(const struct rule *); |
254750ce | 240 | |
baae3d02 BP |
241 | /* The source of a flow_mod request, in the code that processes flow_mods. |
242 | * | |
243 | * A flow table modification request can be generated externally, via OpenFlow, | |
244 | * or internally through a function call. This structure indicates the source | |
245 | * of an OpenFlow-generated flow_mod. For an internal flow_mod, it isn't | |
246 | * meaningful and thus supplied as NULL. */ | |
247 | struct flow_mod_requester { | |
248 | struct ofconn *ofconn; /* Connection on which flow_mod arrived. */ | |
834fe5cb | 249 | ovs_be32 xid; /* OpenFlow xid of flow_mod request. */ |
baae3d02 BP |
250 | }; |
251 | ||
d0918789 | 252 | /* OpenFlow. */ |
baae3d02 BP |
253 | static enum ofperr add_flow(struct ofproto *, struct ofputil_flow_mod *, |
254 | const struct flow_mod_requester *); | |
255 | ||
256 | static enum ofperr modify_flows__(struct ofproto *, struct ofputil_flow_mod *, | |
257 | const struct rule_collection *, | |
258 | const struct flow_mod_requester *); | |
9ca4a86f BP |
259 | static void delete_flows__(const struct rule_collection *, |
260 | enum ofp_flow_removed_reason, | |
261 | const struct flow_mod_requester *) | |
15aaf599 | 262 | OVS_REQUIRES(ofproto_mutex); |
834fe5cb BP |
263 | |
264 | static enum ofperr send_buffered_packet(struct ofconn *, uint32_t buffer_id, | |
265 | struct rule *) | |
266 | OVS_REQUIRES(ofproto_mutex); | |
267 | ||
7e9f8266 BP |
268 | static bool ofproto_group_exists__(const struct ofproto *ofproto, |
269 | uint32_t group_id) | |
270 | OVS_REQ_RDLOCK(ofproto->groups_rwlock); | |
84d68566 SH |
271 | static bool ofproto_group_exists(const struct ofproto *ofproto, |
272 | uint32_t group_id) | |
7e9f8266 | 273 | OVS_EXCLUDED(ofproto->groups_rwlock); |
7395c052 | 274 | static enum ofperr add_group(struct ofproto *, struct ofputil_group_mod *); |
b20f4073 | 275 | static void handle_openflow(struct ofconn *, const struct ofpbuf *); |
baae3d02 | 276 | static enum ofperr handle_flow_mod__(struct ofproto *, |
e3b56933 | 277 | struct ofputil_flow_mod *, |
baae3d02 | 278 | const struct flow_mod_requester *) |
15aaf599 | 279 | OVS_EXCLUDED(ofproto_mutex); |
65e0be10 BP |
280 | static void calc_duration(long long int start, long long int now, |
281 | uint32_t *sec, uint32_t *nsec); | |
f29152ca | 282 | |
d0918789 BP |
283 | /* ofproto. */ |
284 | static uint64_t pick_datapath_id(const struct ofproto *); | |
285 | static uint64_t pick_fallback_dpid(void); | |
286 | static void ofproto_destroy__(struct ofproto *); | |
ada3428f | 287 | static void update_mtu(struct ofproto *, struct ofport *); |
6b3f7f02 | 288 | static void meter_delete(struct ofproto *, uint32_t first, uint32_t last); |
062fea06 | 289 | static void meter_insert_rule(struct rule *); |
f29152ca | 290 | |
d0918789 | 291 | /* unixctl. */ |
abe529af | 292 | static void ofproto_unixctl_init(void); |
f29152ca | 293 | |
abe529af BP |
294 | /* All registered ofproto classes, in probe order. */ |
295 | static const struct ofproto_class **ofproto_classes; | |
296 | static size_t n_ofproto_classes; | |
297 | static size_t allocated_ofproto_classes; | |
7aa697dd | 298 | |
15aaf599 BP |
299 | /* Global lock that protects all flow table operations. */ |
300 | struct ovs_mutex ofproto_mutex = OVS_MUTEX_INITIALIZER; | |
abe7b10f | 301 | |
e79a6c83 | 302 | unsigned ofproto_flow_limit = OFPROTO_FLOW_LIMIT_DEFAULT; |
72310b04 | 303 | unsigned ofproto_max_idle = OFPROTO_MAX_IDLE_DEFAULT; |
380f49c4 | 304 | |
e79a6c83 | 305 | size_t n_handlers, n_revalidators; |
f2eee189 AW |
306 | size_t n_dpdk_rxqs; |
307 | char *pmd_cpu_mask; | |
6567010f | 308 | |
f797957a | 309 | /* Map from datapath name to struct ofproto, for use by unixctl commands. */ |
abe529af | 310 | static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos); |
ebe482fd | 311 | |
e1b1d06a JP |
312 | /* Initial mappings of port to OpenFlow number mappings. */ |
313 | static struct shash init_ofp_ports = SHASH_INITIALIZER(&init_ofp_ports); | |
314 | ||
abe529af | 315 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
f29152ca | 316 | |
40358701 GS |
317 | /* The default value of true waits for flow restore. */ |
318 | static bool flow_restore_wait = true; | |
319 | ||
b0408fca JP |
320 | /* Must be called to initialize the ofproto library. |
321 | * | |
322 | * The caller may pass in 'iface_hints', which contains an shash of | |
323 | * "iface_hint" elements indexed by the interface's name. The provider | |
324 | * may use these hints to describe the startup configuration in order to | |
325 | * reinitialize its state. The caller owns the provided data, so a | |
326 | * provider will make copies of anything required. An ofproto provider | |
327 | * will remove any existing state that is not described by the hint, and | |
328 | * may choose to remove it all. */ | |
329 | void | |
330 | ofproto_init(const struct shash *iface_hints) | |
abe529af | 331 | { |
e1b1d06a | 332 | struct shash_node *node; |
b0408fca | 333 | size_t i; |
f29152ca | 334 | |
b0408fca JP |
335 | ofproto_class_register(&ofproto_dpif_class); |
336 | ||
e1b1d06a JP |
337 | /* Make a local copy, since we don't own 'iface_hints' elements. */ |
338 | SHASH_FOR_EACH(node, iface_hints) { | |
339 | const struct iface_hint *orig_hint = node->data; | |
340 | struct iface_hint *new_hint = xmalloc(sizeof *new_hint); | |
341 | const char *br_type = ofproto_normalize_type(orig_hint->br_type); | |
342 | ||
343 | new_hint->br_name = xstrdup(orig_hint->br_name); | |
344 | new_hint->br_type = xstrdup(br_type); | |
345 | new_hint->ofp_port = orig_hint->ofp_port; | |
346 | ||
347 | shash_add(&init_ofp_ports, node->name, new_hint); | |
348 | } | |
349 | ||
b0408fca | 350 | for (i = 0; i < n_ofproto_classes; i++) { |
e1b1d06a | 351 | ofproto_classes[i]->init(&init_ofp_ports); |
abe529af BP |
352 | } |
353 | } | |
f29152ca | 354 | |
abe529af BP |
355 | /* 'type' should be a normalized datapath type, as returned by |
356 | * ofproto_normalize_type(). Returns the corresponding ofproto_class | |
357 | * structure, or a null pointer if there is none registered for 'type'. */ | |
358 | static const struct ofproto_class * | |
359 | ofproto_class_find__(const char *type) | |
360 | { | |
361 | size_t i; | |
f29152ca | 362 | |
abe529af BP |
363 | for (i = 0; i < n_ofproto_classes; i++) { |
364 | const struct ofproto_class *class = ofproto_classes[i]; | |
365 | struct sset types; | |
366 | bool found; | |
064af421 | 367 | |
abe529af BP |
368 | sset_init(&types); |
369 | class->enumerate_types(&types); | |
370 | found = sset_contains(&types, type); | |
371 | sset_destroy(&types); | |
bcf84111 | 372 | |
abe529af BP |
373 | if (found) { |
374 | return class; | |
375 | } | |
376 | } | |
377 | VLOG_WARN("unknown datapath type %s", type); | |
378 | return NULL; | |
379 | } | |
064af421 | 380 | |
abe529af BP |
381 | /* Registers a new ofproto class. After successful registration, new ofprotos |
382 | * of that type can be created using ofproto_create(). */ | |
383 | int | |
384 | ofproto_class_register(const struct ofproto_class *new_class) | |
385 | { | |
386 | size_t i; | |
7aa697dd | 387 | |
abe529af BP |
388 | for (i = 0; i < n_ofproto_classes; i++) { |
389 | if (ofproto_classes[i] == new_class) { | |
390 | return EEXIST; | |
391 | } | |
392 | } | |
064af421 | 393 | |
abe529af BP |
394 | if (n_ofproto_classes >= allocated_ofproto_classes) { |
395 | ofproto_classes = x2nrealloc(ofproto_classes, | |
396 | &allocated_ofproto_classes, | |
397 | sizeof *ofproto_classes); | |
398 | } | |
399 | ofproto_classes[n_ofproto_classes++] = new_class; | |
400 | return 0; | |
401 | } | |
064af421 | 402 | |
abe529af BP |
403 | /* Unregisters a datapath provider. 'type' must have been previously |
404 | * registered and not currently be in use by any ofprotos. After | |
405 | * unregistration new datapaths of that type cannot be opened using | |
406 | * ofproto_create(). */ | |
407 | int | |
408 | ofproto_class_unregister(const struct ofproto_class *class) | |
409 | { | |
410 | size_t i; | |
76ce9432 | 411 | |
abe529af BP |
412 | for (i = 0; i < n_ofproto_classes; i++) { |
413 | if (ofproto_classes[i] == class) { | |
414 | for (i++; i < n_ofproto_classes; i++) { | |
415 | ofproto_classes[i - 1] = ofproto_classes[i]; | |
416 | } | |
417 | n_ofproto_classes--; | |
418 | return 0; | |
419 | } | |
420 | } | |
421 | VLOG_WARN("attempted to unregister an ofproto class that is not " | |
422 | "registered"); | |
423 | return EAFNOSUPPORT; | |
424 | } | |
4a4cdb3b | 425 | |
f79e673f BP |
426 | /* Clears 'types' and enumerates all registered ofproto types into it. The |
427 | * caller must first initialize the sset. */ | |
428 | void | |
429 | ofproto_enumerate_types(struct sset *types) | |
430 | { | |
abe529af | 431 | size_t i; |
064af421 | 432 | |
c799c306 | 433 | sset_clear(types); |
abe529af BP |
434 | for (i = 0; i < n_ofproto_classes; i++) { |
435 | ofproto_classes[i]->enumerate_types(types); | |
436 | } | |
f79e673f | 437 | } |
064af421 | 438 | |
f79e673f BP |
439 | /* Returns the fully spelled out name for the given ofproto 'type'. |
440 | * | |
441 | * Normalized type string can be compared with strcmp(). Unnormalized type | |
442 | * string might be the same even if they have different spellings. */ | |
443 | const char * | |
444 | ofproto_normalize_type(const char *type) | |
445 | { | |
abe529af | 446 | return type && type[0] ? type : "system"; |
f79e673f | 447 | } |
064af421 | 448 | |
f79e673f BP |
449 | /* Clears 'names' and enumerates the names of all known created ofprotos with |
450 | * the given 'type'. The caller must first initialize the sset. Returns 0 if | |
451 | * successful, otherwise a positive errno value. | |
452 | * | |
453 | * Some kinds of datapaths might not be practically enumerable. This is not | |
454 | * considered an error. */ | |
455 | int | |
456 | ofproto_enumerate_names(const char *type, struct sset *names) | |
457 | { | |
abe529af BP |
458 | const struct ofproto_class *class = ofproto_class_find__(type); |
459 | return class ? class->enumerate_names(type, names) : EAFNOSUPPORT; | |
239ad7d1 | 460 | } |
7aa697dd | 461 | |
064af421 | 462 | int |
abe529af | 463 | ofproto_create(const char *datapath_name, const char *datapath_type, |
064af421 BP |
464 | struct ofproto **ofprotop) |
465 | { | |
abe529af BP |
466 | const struct ofproto_class *class; |
467 | struct ofproto *ofproto; | |
064af421 | 468 | int error; |
c2f0373a | 469 | int i; |
064af421 BP |
470 | |
471 | *ofprotop = NULL; | |
472 | ||
7aa697dd BP |
473 | ofproto_unixctl_init(); |
474 | ||
abe529af BP |
475 | datapath_type = ofproto_normalize_type(datapath_type); |
476 | class = ofproto_class_find__(datapath_type); | |
477 | if (!class) { | |
478 | VLOG_WARN("could not create datapath %s of unknown type %s", | |
479 | datapath_name, datapath_type); | |
480 | return EAFNOSUPPORT; | |
064af421 BP |
481 | } |
482 | ||
abe529af BP |
483 | ofproto = class->alloc(); |
484 | if (!ofproto) { | |
485 | VLOG_ERR("failed to allocate datapath %s of type %s", | |
486 | datapath_name, datapath_type); | |
487 | return ENOMEM; | |
488 | } | |
489 | ||
490 | /* Initialize. */ | |
abe7b10f | 491 | ovs_mutex_lock(&ofproto_mutex); |
abe529af BP |
492 | memset(ofproto, 0, sizeof *ofproto); |
493 | ofproto->ofproto_class = class; | |
494 | ofproto->name = xstrdup(datapath_name); | |
495 | ofproto->type = xstrdup(datapath_type); | |
496 | hmap_insert(&all_ofprotos, &ofproto->hmap_node, | |
497 | hash_string(ofproto->name, 0)); | |
498 | ofproto->datapath_id = 0; | |
8402c74b | 499 | ofproto->forward_bpdu = false; |
abe529af | 500 | ofproto->fallback_dpid = pick_fallback_dpid(); |
061bfea4 BP |
501 | ofproto->mfr_desc = NULL; |
502 | ofproto->hw_desc = NULL; | |
503 | ofproto->sw_desc = NULL; | |
504 | ofproto->serial_desc = NULL; | |
505 | ofproto->dp_desc = NULL; | |
7257b535 | 506 | ofproto->frag_handling = OFPC_FRAG_NORMAL; |
abe529af | 507 | hmap_init(&ofproto->ports); |
fdcea803 | 508 | hmap_init(&ofproto->ofport_usage); |
abe529af | 509 | shash_init(&ofproto->port_by_name); |
e1b1d06a | 510 | simap_init(&ofproto->ofp_requests); |
430dbb14 | 511 | ofproto->max_ports = ofp_to_u16(OFPP_MAX); |
448c2fa8 | 512 | ofproto->eviction_group_timer = LLONG_MIN; |
6c1491fb BP |
513 | ofproto->tables = NULL; |
514 | ofproto->n_tables = 0; | |
98eaac36 | 515 | hindex_init(&ofproto->cookies); |
35f48b8b | 516 | hmap_init(&ofproto->learned_cookies); |
e503cc19 | 517 | list_init(&ofproto->expirable); |
abe529af | 518 | ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name); |
35412852 | 519 | guarded_list_init(&ofproto->rule_executes); |
52a90c29 BP |
520 | ofproto->vlan_bitmap = NULL; |
521 | ofproto->vlans_changed = false; | |
ada3428f | 522 | ofproto->min_mtu = INT_MAX; |
7395c052 NZ |
523 | ovs_rwlock_init(&ofproto->groups_rwlock); |
524 | hmap_init(&ofproto->groups); | |
abe7b10f | 525 | ovs_mutex_unlock(&ofproto_mutex); |
0ae01c64 | 526 | ofproto->ogf.types = 0xf; |
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 | } |
50b9699f NM |
1150 | |
1151 | int | |
1152 | ofproto_port_get_lacp_stats(const struct ofport *port, struct lacp_slave_stats *stats) | |
1153 | { | |
1154 | struct ofproto *ofproto = port->ofproto; | |
1155 | int error; | |
1156 | ||
1157 | if (ofproto->ofproto_class->port_get_lacp_stats) { | |
1158 | error = ofproto->ofproto_class->port_get_lacp_stats(port, stats); | |
1159 | } else { | |
1160 | error = EOPNOTSUPP; | |
1161 | } | |
1162 | ||
1163 | return error; | |
1164 | } | |
e7934396 | 1165 | \f |
fa066f01 | 1166 | /* Bundles. */ |
e7934396 | 1167 | |
abe529af BP |
1168 | /* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'. |
1169 | * A bundle is the same concept as a Port in OVSDB, that is, it consists of one | |
1170 | * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN | |
1171 | * configuration plus, if there is more than one slave, a bonding | |
1172 | * configuration. | |
1173 | * | |
1174 | * If 'aux' is already registered then this function updates its configuration | |
1175 | * to 's'. Otherwise, this function registers a new bundle. | |
1176 | * | |
1177 | * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL | |
1178 | * port. */ | |
1179 | int | |
1180 | ofproto_bundle_register(struct ofproto *ofproto, void *aux, | |
1181 | const struct ofproto_bundle_settings *s) | |
fa066f01 | 1182 | { |
abe529af BP |
1183 | return (ofproto->ofproto_class->bundle_set |
1184 | ? ofproto->ofproto_class->bundle_set(ofproto, aux, s) | |
1185 | : EOPNOTSUPP); | |
fa066f01 BP |
1186 | } |
1187 | ||
abe529af BP |
1188 | /* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'. |
1189 | * If no such bundle has been registered, this has no effect. */ | |
1190 | int | |
1191 | ofproto_bundle_unregister(struct ofproto *ofproto, void *aux) | |
e7934396 | 1192 | { |
abe529af | 1193 | return ofproto_bundle_register(ofproto, aux, NULL); |
e7934396 | 1194 | } |
fa066f01 | 1195 | |
e7934396 | 1196 | \f |
abe529af BP |
1197 | /* Registers a mirror associated with client data pointer 'aux' in 'ofproto'. |
1198 | * If 'aux' is already registered then this function updates its configuration | |
c06bba01 | 1199 | * to 's'. Otherwise, this function registers a new mirror. */ |
abe529af BP |
1200 | int |
1201 | ofproto_mirror_register(struct ofproto *ofproto, void *aux, | |
1202 | const struct ofproto_mirror_settings *s) | |
064af421 | 1203 | { |
abe529af BP |
1204 | return (ofproto->ofproto_class->mirror_set |
1205 | ? ofproto->ofproto_class->mirror_set(ofproto, aux, s) | |
1206 | : EOPNOTSUPP); | |
064af421 BP |
1207 | } |
1208 | ||
abe529af BP |
1209 | /* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'. |
1210 | * If no mirror has been registered, this has no effect. */ | |
1211 | int | |
1212 | ofproto_mirror_unregister(struct ofproto *ofproto, void *aux) | |
064af421 | 1213 | { |
abe529af | 1214 | return ofproto_mirror_register(ofproto, aux, NULL); |
064af421 BP |
1215 | } |
1216 | ||
9d24de3b JP |
1217 | /* Retrieves statistics from mirror associated with client data pointer |
1218 | * 'aux' in 'ofproto'. Stores packet and byte counts in 'packets' and | |
1219 | * 'bytes', respectively. If a particular counters is not supported, | |
1220 | * the appropriate argument is set to UINT64_MAX. */ | |
1221 | int | |
1222 | ofproto_mirror_get_stats(struct ofproto *ofproto, void *aux, | |
1223 | uint64_t *packets, uint64_t *bytes) | |
1224 | { | |
1225 | if (!ofproto->ofproto_class->mirror_get_stats) { | |
1226 | *packets = *bytes = UINT64_MAX; | |
1227 | return EOPNOTSUPP; | |
1228 | } | |
1229 | ||
1230 | return ofproto->ofproto_class->mirror_get_stats(ofproto, aux, | |
1231 | packets, bytes); | |
1232 | } | |
1233 | ||
abe529af BP |
1234 | /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on |
1235 | * which all packets are flooded, instead of using MAC learning. If | |
1236 | * 'flood_vlans' is NULL, then MAC learning applies to all VLANs. | |
1237 | * | |
1238 | * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL | |
1239 | * port. */ | |
1240 | int | |
1241 | ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans) | |
abdfe474 | 1242 | { |
abe529af BP |
1243 | return (ofproto->ofproto_class->set_flood_vlans |
1244 | ? ofproto->ofproto_class->set_flood_vlans(ofproto, flood_vlans) | |
1245 | : EOPNOTSUPP); | |
abdfe474 JP |
1246 | } |
1247 | ||
abe529af BP |
1248 | /* Returns true if 'aux' is a registered bundle that is currently in use as the |
1249 | * output for a mirror. */ | |
1250 | bool | |
b4affc74 | 1251 | ofproto_is_mirror_output_bundle(const struct ofproto *ofproto, void *aux) |
abe529af BP |
1252 | { |
1253 | return (ofproto->ofproto_class->is_mirror_output_bundle | |
1254 | ? ofproto->ofproto_class->is_mirror_output_bundle(ofproto, aux) | |
1255 | : false); | |
1256 | } | |
1257 | \f | |
254750ce BP |
1258 | /* Configuration of OpenFlow tables. */ |
1259 | ||
1260 | /* Returns the number of OpenFlow tables in 'ofproto'. */ | |
1261 | int | |
1262 | ofproto_get_n_tables(const struct ofproto *ofproto) | |
1263 | { | |
1264 | return ofproto->n_tables; | |
1265 | } | |
1266 | ||
adcf00ba AZ |
1267 | /* Returns the number of Controller visible OpenFlow tables |
1268 | * in 'ofproto'. This number will exclude Hidden tables. | |
1269 | * This funtion's return value should be less or equal to that of | |
1270 | * ofproto_get_n_tables() . */ | |
1271 | uint8_t | |
1272 | ofproto_get_n_visible_tables(const struct ofproto *ofproto) | |
1273 | { | |
1274 | uint8_t n = ofproto->n_tables; | |
1275 | ||
1276 | /* Count only non-hidden tables in the number of tables. (Hidden tables, | |
1277 | * if present, are always at the end.) */ | |
1278 | while(n && (ofproto->tables[n - 1].flags & OFTABLE_HIDDEN)) { | |
1279 | n--; | |
1280 | } | |
1281 | ||
1282 | return n; | |
1283 | } | |
1284 | ||
254750ce BP |
1285 | /* Configures the OpenFlow table in 'ofproto' with id 'table_id' with the |
1286 | * settings from 's'. 'table_id' must be in the range 0 through the number of | |
1287 | * OpenFlow tables in 'ofproto' minus 1, inclusive. | |
1288 | * | |
1289 | * For read-only tables, only the name may be configured. */ | |
1290 | void | |
1291 | ofproto_configure_table(struct ofproto *ofproto, int table_id, | |
1292 | const struct ofproto_table_settings *s) | |
1293 | { | |
1294 | struct oftable *table; | |
1295 | ||
cb22974d | 1296 | ovs_assert(table_id >= 0 && table_id < ofproto->n_tables); |
254750ce BP |
1297 | table = &ofproto->tables[table_id]; |
1298 | ||
1299 | oftable_set_name(table, s->name); | |
1300 | ||
1301 | if (table->flags & OFTABLE_READONLY) { | |
1302 | return; | |
1303 | } | |
1304 | ||
1305 | if (s->groups) { | |
1306 | oftable_enable_eviction(table, s->groups, s->n_groups); | |
1307 | } else { | |
1308 | oftable_disable_eviction(table); | |
1309 | } | |
1310 | ||
1311 | table->max_flows = s->max_flows; | |
afae68b1 | 1312 | |
f358a2cb JR |
1313 | if (classifier_set_prefix_fields(&table->cls, |
1314 | s->prefix_fields, s->n_prefix_fields)) { | |
1315 | /* XXX: Trigger revalidation. */ | |
1316 | } | |
834fe5cb BP |
1317 | |
1318 | ovs_mutex_lock(&ofproto_mutex); | |
1319 | evict_rules_from_table(table, 0); | |
1320 | ovs_mutex_unlock(&ofproto_mutex); | |
254750ce BP |
1321 | } |
1322 | \f | |
81e2083f BP |
1323 | bool |
1324 | ofproto_has_snoops(const struct ofproto *ofproto) | |
1325 | { | |
1326 | return connmgr_has_snoops(ofproto->connmgr); | |
1327 | } | |
1328 | ||
064af421 | 1329 | void |
81e2083f | 1330 | ofproto_get_snoops(const struct ofproto *ofproto, struct sset *snoops) |
064af421 | 1331 | { |
19a87e36 | 1332 | connmgr_get_snoops(ofproto->connmgr, snoops); |
064af421 BP |
1333 | } |
1334 | ||
15aaf599 | 1335 | static void |
b20f4073 | 1336 | ofproto_rule_delete__(struct rule *rule, uint8_t reason) |
15aaf599 BP |
1337 | OVS_REQUIRES(ofproto_mutex) |
1338 | { | |
9ca4a86f | 1339 | struct rule_collection rules; |
15aaf599 | 1340 | |
9ca4a86f BP |
1341 | rules.rules = rules.stub; |
1342 | rules.n = 1; | |
1343 | rules.stub[0] = rule; | |
1344 | delete_flows__(&rules, reason, NULL); | |
15aaf599 BP |
1345 | } |
1346 | ||
a73fcd71 | 1347 | /* Deletes 'rule' from 'ofproto'. |
8037acb4 | 1348 | * |
b74cb5d8 BP |
1349 | * Within an ofproto implementation, this function allows an ofproto |
1350 | * implementation to destroy any rules that remain when its ->destruct() | |
1351 | * function is called. This function is not suitable for use elsewhere in an | |
1352 | * ofproto implementation. | |
1353 | * | |
b74cb5d8 | 1354 | * This function implements steps 4.4 and 4.5 in the section titled "Rule Life |
8b81d1ef | 1355 | * Cycle" in ofproto-provider.h. */ |
b74cb5d8 | 1356 | void |
8b81d1ef | 1357 | ofproto_rule_delete(struct ofproto *ofproto, struct rule *rule) |
15aaf599 | 1358 | OVS_EXCLUDED(ofproto_mutex) |
7ee20df1 | 1359 | { |
834fe5cb BP |
1360 | /* This skips the ofmonitor and flow-removed notifications because the |
1361 | * switch is being deleted and any OpenFlow channels have been or soon will | |
1362 | * be killed. */ | |
15aaf599 | 1363 | ovs_mutex_lock(&ofproto_mutex); |
8b81d1ef | 1364 | oftable_remove_rule__(ofproto, rule); |
8037acb4 | 1365 | ofproto->ofproto_class->rule_delete(rule); |
15aaf599 | 1366 | ovs_mutex_unlock(&ofproto_mutex); |
8037acb4 BP |
1367 | } |
1368 | ||
1369 | static void | |
1370 | ofproto_flush__(struct ofproto *ofproto) | |
15aaf599 | 1371 | OVS_EXCLUDED(ofproto_mutex) |
8037acb4 | 1372 | { |
d0918789 | 1373 | struct oftable *table; |
7ee20df1 | 1374 | |
3948503a | 1375 | /* This will flush all datapath flows. */ |
7ee20df1 BP |
1376 | if (ofproto->ofproto_class->flush) { |
1377 | ofproto->ofproto_class->flush(ofproto); | |
1378 | } | |
1379 | ||
3948503a JR |
1380 | /* XXX: There is a small race window here, where new datapath flows can be |
1381 | * created by upcall handlers based on the existing flow table. We can not | |
1382 | * call ofproto class flush while holding 'ofproto_mutex' to prevent this, | |
1383 | * as then we could deadlock on syncing with the handler threads waiting on | |
1384 | * the same mutex. */ | |
1385 | ||
15aaf599 | 1386 | ovs_mutex_lock(&ofproto_mutex); |
b772ded8 | 1387 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
78c8df12 | 1388 | struct rule *rule; |
7ee20df1 | 1389 | |
5c67e4af BP |
1390 | if (table->flags & OFTABLE_HIDDEN) { |
1391 | continue; | |
1392 | } | |
1393 | ||
78c8df12 | 1394 | CLS_FOR_EACH_SAFE (rule, cr, &table->cls) { |
b20f4073 | 1395 | ofproto_rule_delete__(rule, OFPRR_DELETE); |
7ee20df1 BP |
1396 | } |
1397 | } | |
3948503a JR |
1398 | /* XXX: Concurrent handler threads may insert new learned flows based on |
1399 | * learn actions of the now deleted flows right after we release | |
1400 | * 'ofproto_mutex'. */ | |
15aaf599 | 1401 | ovs_mutex_unlock(&ofproto_mutex); |
7ee20df1 BP |
1402 | } |
1403 | ||
7395c052 NZ |
1404 | static void delete_group(struct ofproto *ofproto, uint32_t group_id); |
1405 | ||
abe529af BP |
1406 | static void |
1407 | ofproto_destroy__(struct ofproto *ofproto) | |
15aaf599 | 1408 | OVS_EXCLUDED(ofproto_mutex) |
abe529af | 1409 | { |
d0918789 | 1410 | struct oftable *table; |
6c1491fb | 1411 | |
35412852 | 1412 | destroy_rule_executes(ofproto); |
7395c052 | 1413 | delete_group(ofproto, OFPG_ALL); |
5c09b672 GS |
1414 | |
1415 | guarded_list_destroy(&ofproto->rule_executes); | |
7395c052 NZ |
1416 | ovs_rwlock_destroy(&ofproto->groups_rwlock); |
1417 | hmap_destroy(&ofproto->groups); | |
1418 | ||
abe529af BP |
1419 | hmap_remove(&all_ofprotos, &ofproto->hmap_node); |
1420 | free(ofproto->name); | |
955a7127 | 1421 | free(ofproto->type); |
abe529af BP |
1422 | free(ofproto->mfr_desc); |
1423 | free(ofproto->hw_desc); | |
1424 | free(ofproto->sw_desc); | |
1425 | free(ofproto->serial_desc); | |
1426 | free(ofproto->dp_desc); | |
abe529af | 1427 | hmap_destroy(&ofproto->ports); |
fdcea803 | 1428 | hmap_destroy(&ofproto->ofport_usage); |
abe529af | 1429 | shash_destroy(&ofproto->port_by_name); |
e1b1d06a | 1430 | simap_destroy(&ofproto->ofp_requests); |
6c1491fb | 1431 | |
b772ded8 | 1432 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
d0918789 | 1433 | oftable_destroy(table); |
6c1491fb BP |
1434 | } |
1435 | free(ofproto->tables); | |
fa066f01 | 1436 | |
1406c79b BP |
1437 | ovs_assert(hindex_is_empty(&ofproto->cookies)); |
1438 | hindex_destroy(&ofproto->cookies); | |
1439 | ||
35f48b8b BP |
1440 | ovs_assert(hmap_is_empty(&ofproto->learned_cookies)); |
1441 | hmap_destroy(&ofproto->learned_cookies); | |
1442 | ||
52a90c29 BP |
1443 | free(ofproto->vlan_bitmap); |
1444 | ||
abe529af BP |
1445 | ofproto->ofproto_class->dealloc(ofproto); |
1446 | } | |
fa066f01 | 1447 | |
064af421 BP |
1448 | void |
1449 | ofproto_destroy(struct ofproto *p) | |
15aaf599 | 1450 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 1451 | { |
ca0f572c | 1452 | struct ofport *ofport, *next_ofport; |
fdcea803 | 1453 | struct ofport_usage *usage, *next_usage; |
064af421 BP |
1454 | |
1455 | if (!p) { | |
1456 | return; | |
1457 | } | |
1458 | ||
717de9ff JR |
1459 | if (p->meters) { |
1460 | meter_delete(p, 1, p->meter_features.max_meters); | |
1461 | p->meter_features.max_meters = 0; | |
1462 | free(p->meters); | |
1463 | p->meters = NULL; | |
1464 | } | |
1465 | ||
7ee20df1 | 1466 | ofproto_flush__(p); |
4e8e4213 | 1467 | HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) { |
abe529af | 1468 | ofport_destroy(ofport); |
064af421 | 1469 | } |
064af421 | 1470 | |
fdcea803 GS |
1471 | HMAP_FOR_EACH_SAFE (usage, next_usage, hmap_node, &p->ofport_usage) { |
1472 | hmap_remove(&p->ofport_usage, &usage->hmap_node); | |
1473 | free(usage); | |
1474 | } | |
1475 | ||
abe529af | 1476 | p->ofproto_class->destruct(p); |
58f19539 DDP |
1477 | |
1478 | /* We should not postpone this because it involves deleting a listening | |
1479 | * socket which we may want to reopen soon. 'connmgr' should not be used | |
1480 | * by other threads */ | |
1481 | connmgr_destroy(p->connmgr); | |
1482 | ||
f416c8d6 JR |
1483 | /* Destroying rules is deferred, must have 'ofproto' around for them. */ |
1484 | ovsrcu_postpone(ofproto_destroy__, p); | |
064af421 BP |
1485 | } |
1486 | ||
abe529af BP |
1487 | /* Destroys the datapath with the respective 'name' and 'type'. With the Linux |
1488 | * kernel datapath, for example, this destroys the datapath in the kernel, and | |
1489 | * with the netdev-based datapath, it tears down the data structures that | |
1490 | * represent the datapath. | |
1491 | * | |
1492 | * The datapath should not be currently open as an ofproto. */ | |
064af421 | 1493 | int |
abe529af | 1494 | ofproto_delete(const char *name, const char *type) |
064af421 | 1495 | { |
abe529af BP |
1496 | const struct ofproto_class *class = ofproto_class_find__(type); |
1497 | return (!class ? EAFNOSUPPORT | |
1498 | : !class->del ? EACCES | |
1499 | : class->del(type, name)); | |
064af421 BP |
1500 | } |
1501 | ||
e9e28be3 BP |
1502 | static void |
1503 | process_port_change(struct ofproto *ofproto, int error, char *devname) | |
1504 | { | |
1505 | if (error == ENOBUFS) { | |
1506 | reinit_ports(ofproto); | |
1507 | } else if (!error) { | |
1508 | update_port(ofproto, devname); | |
1509 | free(devname); | |
1510 | } | |
1511 | } | |
1512 | ||
11a574a7 JP |
1513 | int |
1514 | ofproto_type_run(const char *datapath_type) | |
1515 | { | |
1516 | const struct ofproto_class *class; | |
1517 | int error; | |
1518 | ||
1519 | datapath_type = ofproto_normalize_type(datapath_type); | |
1520 | class = ofproto_class_find__(datapath_type); | |
1521 | ||
1522 | error = class->type_run ? class->type_run(datapath_type) : 0; | |
1523 | if (error && error != EAGAIN) { | |
1524 | VLOG_ERR_RL(&rl, "%s: type_run failed (%s)", | |
10a89ef0 | 1525 | datapath_type, ovs_strerror(error)); |
11a574a7 JP |
1526 | } |
1527 | return error; | |
1528 | } | |
1529 | ||
11a574a7 JP |
1530 | void |
1531 | ofproto_type_wait(const char *datapath_type) | |
1532 | { | |
1533 | const struct ofproto_class *class; | |
1534 | ||
1535 | datapath_type = ofproto_normalize_type(datapath_type); | |
1536 | class = ofproto_class_find__(datapath_type); | |
1537 | ||
1538 | if (class->type_wait) { | |
1539 | class->type_wait(datapath_type); | |
1540 | } | |
1541 | } | |
1542 | ||
064af421 | 1543 | int |
abe529af | 1544 | ofproto_run(struct ofproto *p) |
064af421 | 1545 | { |
064af421 | 1546 | int error; |
da4a6191 | 1547 | uint64_t new_seq; |
064af421 | 1548 | |
abe529af | 1549 | error = p->ofproto_class->run(p); |
5fcc0d00 | 1550 | if (error && error != EAGAIN) { |
10a89ef0 | 1551 | VLOG_ERR_RL(&rl, "%s: run failed (%s)", p->name, ovs_strerror(error)); |
149f577a JG |
1552 | } |
1553 | ||
35412852 BP |
1554 | run_rule_executes(p); |
1555 | ||
448c2fa8 EJ |
1556 | /* Restore the eviction group heap invariant occasionally. */ |
1557 | if (p->eviction_group_timer < time_msec()) { | |
1558 | size_t i; | |
1559 | ||
1560 | p->eviction_group_timer = time_msec() + 1000; | |
1561 | ||
1562 | for (i = 0; i < p->n_tables; i++) { | |
1563 | struct oftable *table = &p->tables[i]; | |
1564 | struct eviction_group *evg; | |
448c2fa8 EJ |
1565 | struct rule *rule; |
1566 | ||
1567 | if (!table->eviction_fields) { | |
1568 | continue; | |
1569 | } | |
1570 | ||
1a9bb326 EJ |
1571 | if (classifier_count(&table->cls) > 100000) { |
1572 | static struct vlog_rate_limit count_rl = | |
1573 | VLOG_RATE_LIMIT_INIT(1, 1); | |
1574 | VLOG_WARN_RL(&count_rl, "Table %"PRIuSIZE" has an excessive" | |
1575 | " number of rules: %d", i, | |
1576 | classifier_count(&table->cls)); | |
1577 | } | |
1578 | ||
15aaf599 | 1579 | ovs_mutex_lock(&ofproto_mutex); |
5f0476ce | 1580 | CLS_FOR_EACH (rule, cr, &table->cls) { |
6d56c1f1 K |
1581 | if (rule->idle_timeout || rule->hard_timeout) { |
1582 | if (!rule->eviction_group) { | |
1583 | eviction_group_add_rule(rule); | |
1584 | } else { | |
1585 | heap_raw_change(&rule->evg_node, | |
1586 | rule_eviction_priority(p, rule)); | |
1587 | } | |
448c2fa8 EJ |
1588 | } |
1589 | } | |
6d56c1f1 K |
1590 | |
1591 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { | |
1592 | heap_rebuild(&evg->rules); | |
1593 | } | |
15aaf599 | 1594 | ovs_mutex_unlock(&ofproto_mutex); |
448c2fa8 EJ |
1595 | } |
1596 | } | |
1597 | ||
5bf0e941 | 1598 | if (p->ofproto_class->port_poll) { |
7436ed80 BP |
1599 | char *devname; |
1600 | ||
5bf0e941 BP |
1601 | while ((error = p->ofproto_class->port_poll(p, &devname)) != EAGAIN) { |
1602 | process_port_change(p, error, devname); | |
064af421 | 1603 | } |
e9e28be3 | 1604 | } |
031d8bff | 1605 | |
da4a6191 JS |
1606 | new_seq = seq_read(connectivity_seq_get()); |
1607 | if (new_seq != p->change_seq) { | |
1608 | struct sset devnames; | |
1609 | const char *devname; | |
1610 | struct ofport *ofport; | |
1611 | ||
1612 | /* Update OpenFlow port status for any port whose netdev has changed. | |
1613 | * | |
1614 | * Refreshing a given 'ofport' can cause an arbitrary ofport to be | |
1615 | * destroyed, so it's not safe to update ports directly from the | |
1616 | * HMAP_FOR_EACH loop, or even to use HMAP_FOR_EACH_SAFE. Instead, we | |
1617 | * need this two-phase approach. */ | |
1618 | sset_init(&devnames); | |
1619 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
61501798 AW |
1620 | uint64_t port_change_seq; |
1621 | ||
1622 | port_change_seq = netdev_get_change_seq(ofport->netdev); | |
1623 | if (ofport->change_seq != port_change_seq) { | |
1624 | ofport->change_seq = port_change_seq; | |
1625 | sset_add(&devnames, netdev_get_name(ofport->netdev)); | |
1626 | } | |
031d8bff | 1627 | } |
da4a6191 JS |
1628 | SSET_FOR_EACH (devname, &devnames) { |
1629 | update_port(p, devname); | |
1630 | } | |
1631 | sset_destroy(&devnames); | |
1632 | ||
1633 | p->change_seq = new_seq; | |
064af421 BP |
1634 | } |
1635 | ||
834fe5cb | 1636 | connmgr_run(p->connmgr, handle_openflow); |
064af421 | 1637 | |
5fcc0d00 BP |
1638 | return error; |
1639 | } | |
1640 | ||
064af421 BP |
1641 | void |
1642 | ofproto_wait(struct ofproto *p) | |
1643 | { | |
abe529af | 1644 | p->ofproto_class->wait(p); |
5bf0e941 BP |
1645 | if (p->ofproto_class->port_poll_wait) { |
1646 | p->ofproto_class->port_poll_wait(p); | |
e7934396 | 1647 | } |
da4a6191 | 1648 | seq_wait(connectivity_seq_get(), p->change_seq); |
834fe5cb | 1649 | connmgr_wait(p->connmgr); |
064af421 BP |
1650 | } |
1651 | ||
064af421 BP |
1652 | bool |
1653 | ofproto_is_alive(const struct ofproto *p) | |
1654 | { | |
19a87e36 | 1655 | return connmgr_has_controllers(p->connmgr); |
064af421 BP |
1656 | } |
1657 | ||
0d085684 BP |
1658 | /* Adds some memory usage statistics for 'ofproto' into 'usage', for use with |
1659 | * memory_report(). */ | |
1660 | void | |
1661 | ofproto_get_memory_usage(const struct ofproto *ofproto, struct simap *usage) | |
1662 | { | |
1663 | const struct oftable *table; | |
1664 | unsigned int n_rules; | |
1665 | ||
1666 | simap_increase(usage, "ports", hmap_count(&ofproto->ports)); | |
15aaf599 | 1667 | |
0d085684 BP |
1668 | n_rules = 0; |
1669 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
1670 | n_rules += classifier_count(&table->cls); | |
1671 | } | |
1672 | simap_increase(usage, "rules", n_rules); | |
1673 | ||
1674 | if (ofproto->ofproto_class->get_memory_usage) { | |
1675 | ofproto->ofproto_class->get_memory_usage(ofproto, usage); | |
1676 | } | |
1677 | ||
1678 | connmgr_get_memory_usage(ofproto->connmgr, usage); | |
1679 | } | |
1680 | ||
1c030aa5 EJ |
1681 | void |
1682 | ofproto_type_get_memory_usage(const char *datapath_type, struct simap *usage) | |
1683 | { | |
1684 | const struct ofproto_class *class; | |
1685 | ||
1686 | datapath_type = ofproto_normalize_type(datapath_type); | |
1687 | class = ofproto_class_find__(datapath_type); | |
1688 | ||
1689 | if (class && class->type_get_memory_usage) { | |
1690 | class->type_get_memory_usage(datapath_type, usage); | |
1691 | } | |
1692 | } | |
1693 | ||
bffc0589 | 1694 | void |
2cdcb898 | 1695 | ofproto_get_ofproto_controller_info(const struct ofproto *ofproto, |
bffc0589 AE |
1696 | struct shash *info) |
1697 | { | |
19a87e36 | 1698 | connmgr_get_controller_info(ofproto->connmgr, info); |
bffc0589 AE |
1699 | } |
1700 | ||
1701 | void | |
1702 | ofproto_free_ofproto_controller_info(struct shash *info) | |
1703 | { | |
72ba2ed3 | 1704 | connmgr_free_controller_info(info); |
bffc0589 AE |
1705 | } |
1706 | ||
b5827b24 BP |
1707 | /* Makes a deep copy of 'old' into 'port'. */ |
1708 | void | |
1709 | ofproto_port_clone(struct ofproto_port *port, const struct ofproto_port *old) | |
1710 | { | |
1711 | port->name = xstrdup(old->name); | |
1712 | port->type = xstrdup(old->type); | |
1713 | port->ofp_port = old->ofp_port; | |
1714 | } | |
1715 | ||
1716 | /* Frees memory allocated to members of 'ofproto_port'. | |
3a6ccc8c | 1717 | * |
b5827b24 BP |
1718 | * Do not call this function on an ofproto_port obtained from |
1719 | * ofproto_port_dump_next(): that function retains ownership of the data in the | |
1720 | * ofproto_port. */ | |
1721 | void | |
1722 | ofproto_port_destroy(struct ofproto_port *ofproto_port) | |
1723 | { | |
1724 | free(ofproto_port->name); | |
1725 | free(ofproto_port->type); | |
1726 | } | |
1727 | ||
b5827b24 | 1728 | /* Initializes 'dump' to begin dumping the ports in an ofproto. |
3a6ccc8c | 1729 | * |
b5827b24 BP |
1730 | * This function provides no status indication. An error status for the entire |
1731 | * dump operation is provided when it is completed by calling | |
1732 | * ofproto_port_dump_done(). | |
1733 | */ | |
1734 | void | |
1735 | ofproto_port_dump_start(struct ofproto_port_dump *dump, | |
1736 | const struct ofproto *ofproto) | |
1737 | { | |
abe529af BP |
1738 | dump->ofproto = ofproto; |
1739 | dump->error = ofproto->ofproto_class->port_dump_start(ofproto, | |
1740 | &dump->state); | |
b5827b24 BP |
1741 | } |
1742 | ||
1743 | /* Attempts to retrieve another port from 'dump', which must have been created | |
1744 | * with ofproto_port_dump_start(). On success, stores a new ofproto_port into | |
1745 | * 'port' and returns true. On failure, returns false. | |
1746 | * | |
1747 | * Failure might indicate an actual error or merely that the last port has been | |
1748 | * dumped. An error status for the entire dump operation is provided when it | |
1749 | * is completed by calling ofproto_port_dump_done(). | |
1750 | * | |
1751 | * The ofproto owns the data stored in 'port'. It will remain valid until at | |
1752 | * least the next time 'dump' is passed to ofproto_port_dump_next() or | |
1753 | * ofproto_port_dump_done(). */ | |
1754 | bool | |
1755 | ofproto_port_dump_next(struct ofproto_port_dump *dump, | |
1756 | struct ofproto_port *port) | |
1757 | { | |
abe529af BP |
1758 | const struct ofproto *ofproto = dump->ofproto; |
1759 | ||
1760 | if (dump->error) { | |
1761 | return false; | |
1762 | } | |
b5827b24 | 1763 | |
abe529af BP |
1764 | dump->error = ofproto->ofproto_class->port_dump_next(ofproto, dump->state, |
1765 | port); | |
1766 | if (dump->error) { | |
1767 | ofproto->ofproto_class->port_dump_done(ofproto, dump->state); | |
1768 | return false; | |
b5827b24 | 1769 | } |
abe529af | 1770 | return true; |
b5827b24 BP |
1771 | } |
1772 | ||
1773 | /* Completes port table dump operation 'dump', which must have been created | |
1774 | * with ofproto_port_dump_start(). Returns 0 if the dump operation was | |
1775 | * error-free, otherwise a positive errno value describing the problem. */ | |
3a6ccc8c | 1776 | int |
b5827b24 | 1777 | ofproto_port_dump_done(struct ofproto_port_dump *dump) |
3a6ccc8c | 1778 | { |
abe529af BP |
1779 | const struct ofproto *ofproto = dump->ofproto; |
1780 | if (!dump->error) { | |
1781 | dump->error = ofproto->ofproto_class->port_dump_done(ofproto, | |
1782 | dump->state); | |
1783 | } | |
1784 | return dump->error == EOF ? 0 : dump->error; | |
b5827b24 BP |
1785 | } |
1786 | ||
0aeaabc8 JP |
1787 | /* Returns the type to pass to netdev_open() when a datapath of type |
1788 | * 'datapath_type' has a port of type 'port_type', for a few special | |
1789 | * cases when a netdev type differs from a port type. For example, when | |
1790 | * using the userspace datapath, a port of type "internal" needs to be | |
1791 | * opened as "tap". | |
1792 | * | |
1793 | * Returns either 'type' itself or a string literal, which must not be | |
1794 | * freed. */ | |
1795 | const char * | |
1796 | ofproto_port_open_type(const char *datapath_type, const char *port_type) | |
1797 | { | |
1798 | const struct ofproto_class *class; | |
1799 | ||
1800 | datapath_type = ofproto_normalize_type(datapath_type); | |
1801 | class = ofproto_class_find__(datapath_type); | |
1802 | if (!class) { | |
1803 | return port_type; | |
1804 | } | |
1805 | ||
1806 | return (class->port_open_type | |
1807 | ? class->port_open_type(datapath_type, port_type) | |
1808 | : port_type); | |
1809 | } | |
1810 | ||
81816a5f JP |
1811 | /* Attempts to add 'netdev' as a port on 'ofproto'. If 'ofp_portp' is |
1812 | * non-null and '*ofp_portp' is not OFPP_NONE, attempts to use that as | |
1813 | * the port's OpenFlow port number. | |
1814 | * | |
1815 | * If successful, returns 0 and sets '*ofp_portp' to the new port's | |
1816 | * OpenFlow port number (if 'ofp_portp' is non-null). On failure, | |
1817 | * returns a positive errno value and sets '*ofp_portp' to OFPP_NONE (if | |
1818 | * 'ofp_portp' is non-null). */ | |
b5827b24 BP |
1819 | int |
1820 | ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev, | |
4e022ec0 | 1821 | ofp_port_t *ofp_portp) |
b5827b24 | 1822 | { |
4e022ec0 | 1823 | ofp_port_t ofp_port = ofp_portp ? *ofp_portp : OFPP_NONE; |
3a6ccc8c BP |
1824 | int error; |
1825 | ||
e1b1d06a | 1826 | error = ofproto->ofproto_class->port_add(ofproto, netdev); |
1fa24dea | 1827 | if (!error) { |
e1b1d06a JP |
1828 | const char *netdev_name = netdev_get_name(netdev); |
1829 | ||
4e022ec0 AW |
1830 | simap_put(&ofproto->ofp_requests, netdev_name, |
1831 | ofp_to_u16(ofp_port)); | |
e1b1d06a | 1832 | update_port(ofproto, netdev_name); |
1fa24dea | 1833 | } |
b5827b24 | 1834 | if (ofp_portp) { |
17f69db5 BP |
1835 | *ofp_portp = OFPP_NONE; |
1836 | if (!error) { | |
1837 | struct ofproto_port ofproto_port; | |
1838 | ||
1839 | error = ofproto_port_query_by_name(ofproto, | |
1840 | netdev_get_name(netdev), | |
1841 | &ofproto_port); | |
1842 | if (!error) { | |
1843 | *ofp_portp = ofproto_port.ofp_port; | |
1844 | ofproto_port_destroy(&ofproto_port); | |
1845 | } | |
1846 | } | |
3a6ccc8c BP |
1847 | } |
1848 | return error; | |
1849 | } | |
1850 | ||
b5827b24 BP |
1851 | /* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and |
1852 | * initializes '*port' appropriately; on failure, returns a positive errno | |
1853 | * value. | |
1854 | * | |
abe529af | 1855 | * The caller owns the data in 'ofproto_port' and must free it with |
b5827b24 BP |
1856 | * ofproto_port_destroy() when it is no longer needed. */ |
1857 | int | |
1858 | ofproto_port_query_by_name(const struct ofproto *ofproto, const char *devname, | |
1859 | struct ofproto_port *port) | |
a4e2e1f2 | 1860 | { |
b5827b24 BP |
1861 | int error; |
1862 | ||
abe529af BP |
1863 | error = ofproto->ofproto_class->port_query_by_name(ofproto, devname, port); |
1864 | if (error) { | |
1865 | memset(port, 0, sizeof *port); | |
b5827b24 BP |
1866 | } |
1867 | return error; | |
a4e2e1f2 EJ |
1868 | } |
1869 | ||
b5827b24 | 1870 | /* Deletes port number 'ofp_port' from the datapath for 'ofproto'. |
3a6ccc8c | 1871 | * Returns 0 if successful, otherwise a positive errno. */ |
064af421 | 1872 | int |
4e022ec0 | 1873 | ofproto_port_del(struct ofproto *ofproto, ofp_port_t ofp_port) |
064af421 | 1874 | { |
abe529af | 1875 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1264ec95 | 1876 | const char *name = ofport ? netdev_get_name(ofport->netdev) : "<unknown>"; |
e1b1d06a | 1877 | struct simap_node *ofp_request_node; |
3cf10406 | 1878 | int error; |
cdee00fd | 1879 | |
e1b1d06a JP |
1880 | ofp_request_node = simap_find(&ofproto->ofp_requests, name); |
1881 | if (ofp_request_node) { | |
1882 | simap_delete(&ofproto->ofp_requests, ofp_request_node); | |
1883 | } | |
1884 | ||
abe529af | 1885 | error = ofproto->ofproto_class->port_del(ofproto, ofp_port); |
892815f5 | 1886 | if (!error && ofport) { |
1264ec95 BP |
1887 | /* 'name' is the netdev's name and update_port() is going to close the |
1888 | * netdev. Just in case update_port() refers to 'name' after it | |
3a6ccc8c BP |
1889 | * destroys 'ofport', make a copy of it around the update_port() |
1890 | * call. */ | |
1891 | char *devname = xstrdup(name); | |
1892 | update_port(ofproto, devname); | |
1893 | free(devname); | |
3cf10406 BP |
1894 | } |
1895 | return error; | |
064af421 BP |
1896 | } |
1897 | ||
276f6518 SH |
1898 | static void |
1899 | flow_mod_init(struct ofputil_flow_mod *fm, | |
eb391b76 | 1900 | const struct match *match, int priority, |
276f6518 SH |
1901 | const struct ofpact *ofpacts, size_t ofpacts_len, |
1902 | enum ofp_flow_mod_command command) | |
1903 | { | |
1904 | memset(fm, 0, sizeof *fm); | |
1905 | fm->match = *match; | |
1906 | fm->priority = priority; | |
1907 | fm->cookie = 0; | |
1908 | fm->new_cookie = 0; | |
1909 | fm->modify_cookie = false; | |
1910 | fm->table_id = 0; | |
1911 | fm->command = command; | |
1912 | fm->idle_timeout = 0; | |
1913 | fm->hard_timeout = 0; | |
ca26eb44 | 1914 | fm->importance = 0; |
276f6518 SH |
1915 | fm->buffer_id = UINT32_MAX; |
1916 | fm->out_port = OFPP_ANY; | |
1917 | fm->out_group = OFPG_ANY; | |
1918 | fm->flags = 0; | |
1919 | fm->ofpacts = CONST_CAST(struct ofpact *, ofpacts); | |
1920 | fm->ofpacts_len = ofpacts_len; | |
cc40d06b | 1921 | fm->delete_reason = OFPRR_DELETE; |
276f6518 SH |
1922 | } |
1923 | ||
97f63e57 BP |
1924 | static int |
1925 | simple_flow_mod(struct ofproto *ofproto, | |
eb391b76 | 1926 | const struct match *match, int priority, |
97f63e57 BP |
1927 | const struct ofpact *ofpacts, size_t ofpacts_len, |
1928 | enum ofp_flow_mod_command command) | |
1929 | { | |
1930 | struct ofputil_flow_mod fm; | |
1931 | ||
276f6518 | 1932 | flow_mod_init(&fm, match, priority, ofpacts, ofpacts_len, command); |
15aaf599 | 1933 | |
baae3d02 | 1934 | return handle_flow_mod__(ofproto, &fm, NULL); |
97f63e57 BP |
1935 | } |
1936 | ||
6c1491fb | 1937 | /* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and |
fa8b054f BP |
1938 | * performs the 'n_actions' actions in 'actions'. The new flow will not |
1939 | * timeout. | |
1940 | * | |
1941 | * If cls_rule->priority is in the range of priorities supported by OpenFlow | |
1942 | * (0...65535, inclusive) then the flow will be visible to OpenFlow | |
1943 | * controllers; otherwise, it will be hidden. | |
1944 | * | |
f25d0cf3 | 1945 | * The caller retains ownership of 'cls_rule' and 'ofpacts'. |
6c1491fb BP |
1946 | * |
1947 | * This is a helper function for in-band control and fail-open. */ | |
064af421 | 1948 | void |
81a76618 | 1949 | ofproto_add_flow(struct ofproto *ofproto, const struct match *match, |
eb391b76 | 1950 | int priority, |
f25d0cf3 | 1951 | const struct ofpact *ofpacts, size_t ofpacts_len) |
15aaf599 | 1952 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 1953 | { |
7ee20df1 | 1954 | const struct rule *rule; |
6f00e29b | 1955 | bool must_add; |
7ee20df1 | 1956 | |
97f63e57 BP |
1957 | /* First do a cheap check whether the rule we're looking for already exists |
1958 | * with the actions that we want. If it does, then we're done. */ | |
81a76618 BP |
1959 | rule = rule_from_cls_rule(classifier_find_match_exactly( |
1960 | &ofproto->tables[0].cls, match, priority)); | |
6f00e29b | 1961 | if (rule) { |
dc723c44 | 1962 | const struct rule_actions *actions = rule_get_actions(rule); |
06a0f3e2 | 1963 | must_add = !ofpacts_equal(actions->ofpacts, actions->ofpacts_len, |
6f00e29b | 1964 | ofpacts, ofpacts_len); |
6f00e29b BP |
1965 | } else { |
1966 | must_add = true; | |
1967 | } | |
97f63e57 BP |
1968 | |
1969 | /* If there's no such rule or the rule doesn't have the actions we want, | |
1970 | * fall back to a executing a full flow mod. We can't optimize this at | |
1971 | * all because we didn't take enough locks above to ensure that the flow | |
1972 | * table didn't already change beneath us. */ | |
6f00e29b | 1973 | if (must_add) { |
97f63e57 BP |
1974 | simple_flow_mod(ofproto, match, priority, ofpacts, ofpacts_len, |
1975 | OFPFC_MODIFY_STRICT); | |
7ee20df1 | 1976 | } |
064af421 BP |
1977 | } |
1978 | ||
75a75043 | 1979 | /* Executes the flow modification specified in 'fm'. Returns 0 on success, an |
90bf1e07 BP |
1980 | * OFPERR_* OpenFlow error code on failure, or OFPROTO_POSTPONE if the |
1981 | * operation cannot be initiated now but may be retried later. | |
75a75043 | 1982 | * |
1b63b91e BP |
1983 | * This is a helper function for in-band control and fail-open and the "learn" |
1984 | * action. */ | |
75a75043 | 1985 | int |
e3b56933 | 1986 | ofproto_flow_mod(struct ofproto *ofproto, struct ofputil_flow_mod *fm) |
15aaf599 | 1987 | OVS_EXCLUDED(ofproto_mutex) |
75a75043 | 1988 | { |
b90d6ee5 JR |
1989 | /* Optimize for the most common case of a repeated learn action. |
1990 | * If an identical flow already exists we only need to update its | |
1991 | * 'modified' time. */ | |
1992 | if (fm->command == OFPFC_MODIFY_STRICT && fm->table_id != OFPTT_ALL | |
1993 | && !(fm->flags & OFPUTIL_FF_RESET_COUNTS)) { | |
1994 | struct oftable *table = &ofproto->tables[fm->table_id]; | |
b90d6ee5 JR |
1995 | struct rule *rule; |
1996 | bool done = false; | |
1997 | ||
0ef165ec EJ |
1998 | rule = rule_from_cls_rule(classifier_find_match_exactly(&table->cls, |
1999 | &fm->match, | |
2000 | fm->priority)); | |
b90d6ee5 JR |
2001 | if (rule) { |
2002 | /* Reading many of the rule fields and writing on 'modified' | |
2003 | * requires the rule->mutex. Also, rule->actions may change | |
2004 | * if rule->mutex is not held. */ | |
06a0f3e2 BP |
2005 | const struct rule_actions *actions; |
2006 | ||
b90d6ee5 | 2007 | ovs_mutex_lock(&rule->mutex); |
06a0f3e2 | 2008 | actions = rule_get_actions(rule); |
b90d6ee5 JR |
2009 | if (rule->idle_timeout == fm->idle_timeout |
2010 | && rule->hard_timeout == fm->hard_timeout | |
ca26eb44 | 2011 | && rule->importance == fm->importance |
b90d6ee5 JR |
2012 | && rule->flags == (fm->flags & OFPUTIL_FF_STATE) |
2013 | && (!fm->modify_cookie || (fm->new_cookie == rule->flow_cookie)) | |
2014 | && ofpacts_equal(fm->ofpacts, fm->ofpacts_len, | |
06a0f3e2 | 2015 | actions->ofpacts, actions->ofpacts_len)) { |
b90d6ee5 JR |
2016 | /* Rule already exists and need not change, only update the |
2017 | modified timestamp. */ | |
2018 | rule->modified = time_msec(); | |
2019 | done = true; | |
2020 | } | |
2021 | ovs_mutex_unlock(&rule->mutex); | |
2022 | } | |
b90d6ee5 JR |
2023 | |
2024 | if (done) { | |
2025 | return 0; | |
2026 | } | |
2027 | } | |
2028 | ||
baae3d02 | 2029 | return handle_flow_mod__(ofproto, fm, NULL); |
75a75043 BP |
2030 | } |
2031 | ||
6c1491fb BP |
2032 | /* Searches for a rule with matching criteria exactly equal to 'target' in |
2033 | * ofproto's table 0 and, if it finds one, deletes it. | |
2034 | * | |
2035 | * This is a helper function for in-band control and fail-open. */ | |
b20f4073 | 2036 | void |
81a76618 | 2037 | ofproto_delete_flow(struct ofproto *ofproto, |
eb391b76 | 2038 | const struct match *target, int priority) |
15aaf599 | 2039 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 2040 | { |
8037acb4 | 2041 | struct classifier *cls = &ofproto->tables[0].cls; |
064af421 BP |
2042 | struct rule *rule; |
2043 | ||
97f63e57 BP |
2044 | /* First do a cheap check whether the rule we're looking for has already |
2045 | * been deleted. If so, then we're done. */ | |
8037acb4 BP |
2046 | rule = rule_from_cls_rule(classifier_find_match_exactly(cls, target, |
2047 | priority)); | |
834fe5cb BP |
2048 | if (!rule) { |
2049 | return; | |
bcf84111 | 2050 | } |
834fe5cb BP |
2051 | |
2052 | /* Execute a flow mod. We can't optimize this at all because we didn't | |
2053 | * take enough locks above to ensure that the flow table didn't already | |
2054 | * change beneath us. */ | |
2055 | simple_flow_mod(ofproto, target, priority, NULL, 0, OFPFC_DELETE_STRICT); | |
142e1f5c BP |
2056 | } |
2057 | ||
834fe5cb BP |
2058 | /* Delete all of the flows from all of ofproto's flow tables, then reintroduce |
2059 | * the flows required by in-band control and fail-open. */ | |
142e1f5c BP |
2060 | void |
2061 | ofproto_flush_flows(struct ofproto *ofproto) | |
2062 | { | |
7ee20df1 | 2063 | COVERAGE_INC(ofproto_flush); |
834fe5cb BP |
2064 | ofproto_flush__(ofproto); |
2065 | connmgr_flushed(ofproto->connmgr); | |
064af421 BP |
2066 | } |
2067 | \f | |
2068 | static void | |
2069 | reinit_ports(struct ofproto *p) | |
2070 | { | |
abe529af | 2071 | struct ofproto_port_dump dump; |
b3c01ed3 | 2072 | struct sset devnames; |
064af421 | 2073 | struct ofport *ofport; |
abe529af | 2074 | struct ofproto_port ofproto_port; |
b3c01ed3 | 2075 | const char *devname; |
064af421 | 2076 | |
898bf89d JP |
2077 | COVERAGE_INC(ofproto_reinit_ports); |
2078 | ||
b3c01ed3 | 2079 | sset_init(&devnames); |
4e8e4213 | 2080 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { |
1264ec95 | 2081 | sset_add(&devnames, netdev_get_name(ofport->netdev)); |
064af421 | 2082 | } |
abe529af BP |
2083 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { |
2084 | sset_add(&devnames, ofproto_port.name); | |
064af421 | 2085 | } |
064af421 | 2086 | |
b3c01ed3 BP |
2087 | SSET_FOR_EACH (devname, &devnames) { |
2088 | update_port(p, devname); | |
064af421 | 2089 | } |
b3c01ed3 | 2090 | sset_destroy(&devnames); |
064af421 BP |
2091 | } |
2092 | ||
4e022ec0 | 2093 | static ofp_port_t |
e1b1d06a JP |
2094 | alloc_ofp_port(struct ofproto *ofproto, const char *netdev_name) |
2095 | { | |
4e022ec0 | 2096 | uint16_t port_idx; |
e1b1d06a | 2097 | |
4e022ec0 | 2098 | port_idx = simap_get(&ofproto->ofp_requests, netdev_name); |
430dbb14 | 2099 | port_idx = port_idx ? port_idx : UINT16_MAX; |
4e022ec0 | 2100 | |
430dbb14 | 2101 | if (port_idx >= ofproto->max_ports |
fdcea803 GS |
2102 | || ofport_get_usage(ofproto, u16_to_ofp(port_idx)) == LLONG_MAX) { |
2103 | uint16_t lru_ofport = 0, end_port_no = ofproto->alloc_port_no; | |
2104 | long long int last_used_at, lru = LLONG_MAX; | |
e1b1d06a | 2105 | |
e1b1d06a JP |
2106 | /* Search for a free OpenFlow port number. We try not to |
2107 | * immediately reuse them to prevent problems due to old | |
484c8355 BP |
2108 | * flows. |
2109 | * | |
2110 | * We limit the automatically assigned port numbers to the lower half | |
2111 | * of the port range, to reserve the upper half for assignment by | |
2112 | * controllers. */ | |
6033d9d9 | 2113 | for (;;) { |
484c8355 | 2114 | if (++ofproto->alloc_port_no >= MIN(ofproto->max_ports, 32768)) { |
fdcea803 | 2115 | ofproto->alloc_port_no = 1; |
6033d9d9 | 2116 | } |
fdcea803 GS |
2117 | last_used_at = ofport_get_usage(ofproto, |
2118 | u16_to_ofp(ofproto->alloc_port_no)); | |
2119 | if (!last_used_at) { | |
430dbb14 | 2120 | port_idx = ofproto->alloc_port_no; |
6033d9d9 | 2121 | break; |
865b26a4 GS |
2122 | } else if ( last_used_at < time_msec() - 60*60*1000) { |
2123 | /* If the port with ofport 'ofproto->alloc_port_no' was deleted | |
2124 | * more than an hour ago, consider it usable. */ | |
2125 | ofport_remove_usage(ofproto, | |
2126 | u16_to_ofp(ofproto->alloc_port_no)); | |
2127 | port_idx = ofproto->alloc_port_no; | |
2128 | break; | |
fdcea803 GS |
2129 | } else if (last_used_at < lru) { |
2130 | lru = last_used_at; | |
2131 | lru_ofport = ofproto->alloc_port_no; | |
e1b1d06a | 2132 | } |
fdcea803 | 2133 | |
430dbb14 | 2134 | if (ofproto->alloc_port_no == end_port_no) { |
fdcea803 GS |
2135 | if (lru_ofport) { |
2136 | port_idx = lru_ofport; | |
2137 | break; | |
2138 | } | |
6033d9d9 | 2139 | return OFPP_NONE; |
e1b1d06a JP |
2140 | } |
2141 | } | |
2142 | } | |
fdcea803 | 2143 | ofport_set_usage(ofproto, u16_to_ofp(port_idx), LLONG_MAX); |
4e022ec0 | 2144 | return u16_to_ofp(port_idx); |
e1b1d06a JP |
2145 | } |
2146 | ||
2147 | static void | |
fdcea803 | 2148 | dealloc_ofp_port(struct ofproto *ofproto, ofp_port_t ofp_port) |
e1b1d06a | 2149 | { |
430dbb14 | 2150 | if (ofp_to_u16(ofp_port) < ofproto->max_ports) { |
fdcea803 | 2151 | ofport_set_usage(ofproto, ofp_port, time_msec()); |
40fa9417 | 2152 | } |
e1b1d06a JP |
2153 | } |
2154 | ||
fbfa2911 BP |
2155 | /* Opens and returns a netdev for 'ofproto_port' in 'ofproto', or a null |
2156 | * pointer if the netdev cannot be opened. On success, also fills in | |
d7d92203 | 2157 | * '*pp'. */ |
b33951b8 | 2158 | static struct netdev * |
e1b1d06a JP |
2159 | ofport_open(struct ofproto *ofproto, |
2160 | struct ofproto_port *ofproto_port, | |
9e1fd49b | 2161 | struct ofputil_phy_port *pp) |
064af421 BP |
2162 | { |
2163 | enum netdev_flags flags; | |
064af421 | 2164 | struct netdev *netdev; |
064af421 BP |
2165 | int error; |
2166 | ||
18812dff | 2167 | error = netdev_open(ofproto_port->name, ofproto_port->type, &netdev); |
064af421 | 2168 | if (error) { |
fbfa2911 | 2169 | VLOG_WARN_RL(&rl, "%s: ignoring port %s (%"PRIu16") because netdev %s " |
064af421 | 2170 | "cannot be opened (%s)", |
fbfa2911 | 2171 | ofproto->name, |
abe529af | 2172 | ofproto_port->name, ofproto_port->ofp_port, |
10a89ef0 | 2173 | ofproto_port->name, ovs_strerror(error)); |
064af421 BP |
2174 | return NULL; |
2175 | } | |
2176 | ||
e1b1d06a JP |
2177 | if (ofproto_port->ofp_port == OFPP_NONE) { |
2178 | if (!strcmp(ofproto->name, ofproto_port->name)) { | |
2179 | ofproto_port->ofp_port = OFPP_LOCAL; | |
2180 | } else { | |
2181 | ofproto_port->ofp_port = alloc_ofp_port(ofproto, | |
2182 | ofproto_port->name); | |
2183 | } | |
2184 | } | |
9e1fd49b BP |
2185 | pp->port_no = ofproto_port->ofp_port; |
2186 | netdev_get_etheraddr(netdev, pp->hw_addr); | |
2187 | ovs_strlcpy(pp->name, ofproto_port->name, sizeof pp->name); | |
064af421 | 2188 | netdev_get_flags(netdev, &flags); |
9e1fd49b BP |
2189 | pp->config = flags & NETDEV_UP ? 0 : OFPUTIL_PC_PORT_DOWN; |
2190 | pp->state = netdev_get_carrier(netdev) ? 0 : OFPUTIL_PS_LINK_DOWN; | |
2191 | netdev_get_features(netdev, &pp->curr, &pp->advertised, | |
2192 | &pp->supported, &pp->peer); | |
cd65125d BP |
2193 | pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000; |
2194 | pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000; | |
118c4676 | 2195 | |
b33951b8 | 2196 | return netdev; |
064af421 BP |
2197 | } |
2198 | ||
b33951b8 | 2199 | /* Returns true if most fields of 'a' and 'b' are equal. Differences in name, |
d7d92203 | 2200 | * port number, and 'config' bits other than OFPUTIL_PC_PORT_DOWN are |
b33951b8 BP |
2201 | * disregarded. */ |
2202 | static bool | |
9e1fd49b BP |
2203 | ofport_equal(const struct ofputil_phy_port *a, |
2204 | const struct ofputil_phy_port *b) | |
064af421 | 2205 | { |
9e1fd49b | 2206 | return (eth_addr_equals(a->hw_addr, b->hw_addr) |
064af421 | 2207 | && a->state == b->state |
9e1fd49b | 2208 | && !((a->config ^ b->config) & OFPUTIL_PC_PORT_DOWN) |
064af421 BP |
2209 | && a->curr == b->curr |
2210 | && a->advertised == b->advertised | |
2211 | && a->supported == b->supported | |
9e1fd49b BP |
2212 | && a->peer == b->peer |
2213 | && a->curr_speed == b->curr_speed | |
2214 | && a->max_speed == b->max_speed); | |
064af421 BP |
2215 | } |
2216 | ||
b33951b8 BP |
2217 | /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'. |
2218 | * The caller must ensure that 'p' does not have a conflicting ofport (that is, | |
2219 | * one with the same name or port number). */ | |
064af421 | 2220 | static void |
b33951b8 | 2221 | ofport_install(struct ofproto *p, |
9e1fd49b | 2222 | struct netdev *netdev, const struct ofputil_phy_port *pp) |
064af421 | 2223 | { |
b33951b8 BP |
2224 | const char *netdev_name = netdev_get_name(netdev); |
2225 | struct ofport *ofport; | |
abe529af | 2226 | int error; |
72b06300 | 2227 | |
b33951b8 | 2228 | /* Create ofport. */ |
abe529af BP |
2229 | ofport = p->ofproto_class->port_alloc(); |
2230 | if (!ofport) { | |
2231 | error = ENOMEM; | |
2232 | goto error; | |
2233 | } | |
0f7d71a5 | 2234 | ofport->ofproto = p; |
b33951b8 | 2235 | ofport->netdev = netdev; |
61501798 | 2236 | ofport->change_seq = netdev_get_change_seq(netdev); |
9e1fd49b BP |
2237 | ofport->pp = *pp; |
2238 | ofport->ofp_port = pp->port_no; | |
65e0be10 | 2239 | ofport->created = time_msec(); |
b33951b8 BP |
2240 | |
2241 | /* Add port to 'p'. */ | |
4e022ec0 | 2242 | hmap_insert(&p->ports, &ofport->hmap_node, |
f9c0c3ec | 2243 | hash_ofp_port(ofport->ofp_port)); |
72b06300 | 2244 | shash_add(&p->port_by_name, netdev_name, ofport); |
abe529af | 2245 | |
ada3428f | 2246 | update_mtu(p, ofport); |
9197df76 | 2247 | |
abe529af BP |
2248 | /* Let the ofproto_class initialize its private data. */ |
2249 | error = p->ofproto_class->port_construct(ofport); | |
2250 | if (error) { | |
2251 | goto error; | |
2252 | } | |
2a6f78e0 | 2253 | connmgr_send_port_status(p->connmgr, NULL, pp, OFPPR_ADD); |
abe529af BP |
2254 | return; |
2255 | ||
2256 | error: | |
2257 | VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)", | |
10a89ef0 | 2258 | p->name, netdev_name, ovs_strerror(error)); |
abe529af BP |
2259 | if (ofport) { |
2260 | ofport_destroy__(ofport); | |
2261 | } else { | |
2262 | netdev_close(netdev); | |
72b06300 | 2263 | } |
064af421 BP |
2264 | } |
2265 | ||
b33951b8 | 2266 | /* Removes 'ofport' from 'p' and destroys it. */ |
064af421 | 2267 | static void |
0f7d71a5 | 2268 | ofport_remove(struct ofport *ofport) |
064af421 | 2269 | { |
2a6f78e0 | 2270 | connmgr_send_port_status(ofport->ofproto->connmgr, NULL, &ofport->pp, |
fa066f01 | 2271 | OFPPR_DELETE); |
abe529af | 2272 | ofport_destroy(ofport); |
b33951b8 BP |
2273 | } |
2274 | ||
2275 | /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and | |
2276 | * destroys it. */ | |
2277 | static void | |
2278 | ofport_remove_with_name(struct ofproto *ofproto, const char *name) | |
2279 | { | |
2280 | struct ofport *port = shash_find_data(&ofproto->port_by_name, name); | |
2281 | if (port) { | |
0f7d71a5 | 2282 | ofport_remove(port); |
b33951b8 BP |
2283 | } |
2284 | } | |
2285 | ||
9e1fd49b | 2286 | /* Updates 'port' with new 'pp' description. |
b33951b8 BP |
2287 | * |
2288 | * Does not handle a name or port number change. The caller must implement | |
2289 | * such a change as a delete followed by an add. */ | |
2290 | static void | |
9e1fd49b | 2291 | ofport_modified(struct ofport *port, struct ofputil_phy_port *pp) |
b33951b8 | 2292 | { |
9e1fd49b BP |
2293 | memcpy(port->pp.hw_addr, pp->hw_addr, ETH_ADDR_LEN); |
2294 | port->pp.config = ((port->pp.config & ~OFPUTIL_PC_PORT_DOWN) | |
2295 | | (pp->config & OFPUTIL_PC_PORT_DOWN)); | |
53fd5c7c BP |
2296 | port->pp.state = ((port->pp.state & ~OFPUTIL_PS_LINK_DOWN) |
2297 | | (pp->state & OFPUTIL_PS_LINK_DOWN)); | |
9e1fd49b BP |
2298 | port->pp.curr = pp->curr; |
2299 | port->pp.advertised = pp->advertised; | |
2300 | port->pp.supported = pp->supported; | |
2301 | port->pp.peer = pp->peer; | |
2302 | port->pp.curr_speed = pp->curr_speed; | |
2303 | port->pp.max_speed = pp->max_speed; | |
b33951b8 | 2304 | |
2a6f78e0 BP |
2305 | connmgr_send_port_status(port->ofproto->connmgr, NULL, |
2306 | &port->pp, OFPPR_MODIFY); | |
064af421 BP |
2307 | } |
2308 | ||
5a2dfd47 JP |
2309 | /* Update OpenFlow 'state' in 'port' and notify controller. */ |
2310 | void | |
9e1fd49b | 2311 | ofproto_port_set_state(struct ofport *port, enum ofputil_port_state state) |
5a2dfd47 | 2312 | { |
9e1fd49b BP |
2313 | if (port->pp.state != state) { |
2314 | port->pp.state = state; | |
2a6f78e0 BP |
2315 | connmgr_send_port_status(port->ofproto->connmgr, NULL, |
2316 | &port->pp, OFPPR_MODIFY); | |
5a2dfd47 JP |
2317 | } |
2318 | } | |
2319 | ||
abe529af | 2320 | void |
4e022ec0 | 2321 | ofproto_port_unregister(struct ofproto *ofproto, ofp_port_t ofp_port) |
e7934396 | 2322 | { |
abe529af BP |
2323 | struct ofport *port = ofproto_get_port(ofproto, ofp_port); |
2324 | if (port) { | |
52a90c29 BP |
2325 | if (port->ofproto->ofproto_class->set_realdev) { |
2326 | port->ofproto->ofproto_class->set_realdev(port, 0, 0); | |
2327 | } | |
b308140a JP |
2328 | if (port->ofproto->ofproto_class->set_stp_port) { |
2329 | port->ofproto->ofproto_class->set_stp_port(port, NULL); | |
2330 | } | |
9efd308e DV |
2331 | if (port->ofproto->ofproto_class->set_rstp_port) { |
2332 | port->ofproto->ofproto_class->set_rstp_port(port, NULL); | |
2333 | } | |
abe529af | 2334 | if (port->ofproto->ofproto_class->set_cfm) { |
a5610457 | 2335 | port->ofproto->ofproto_class->set_cfm(port, NULL); |
abe529af BP |
2336 | } |
2337 | if (port->ofproto->ofproto_class->bundle_remove) { | |
2338 | port->ofproto->ofproto_class->bundle_remove(port); | |
e7934396 BP |
2339 | } |
2340 | } | |
2341 | } | |
2342 | ||
2343 | static void | |
abe529af | 2344 | ofport_destroy__(struct ofport *port) |
e7934396 | 2345 | { |
abe529af BP |
2346 | struct ofproto *ofproto = port->ofproto; |
2347 | const char *name = netdev_get_name(port->netdev); | |
fa066f01 | 2348 | |
abe529af BP |
2349 | hmap_remove(&ofproto->ports, &port->hmap_node); |
2350 | shash_delete(&ofproto->port_by_name, | |
2351 | shash_find(&ofproto->port_by_name, name)); | |
fa066f01 | 2352 | |
abe529af BP |
2353 | netdev_close(port->netdev); |
2354 | ofproto->ofproto_class->port_dealloc(port); | |
e7934396 BP |
2355 | } |
2356 | ||
064af421 | 2357 | static void |
abe529af | 2358 | ofport_destroy(struct ofport *port) |
064af421 | 2359 | { |
fa066f01 | 2360 | if (port) { |
e1b1d06a | 2361 | dealloc_ofp_port(port->ofproto, port->ofp_port); |
abe529af BP |
2362 | port->ofproto->ofproto_class->port_destruct(port); |
2363 | ofport_destroy__(port); | |
2364 | } | |
064af421 BP |
2365 | } |
2366 | ||
abe529af | 2367 | struct ofport * |
4e022ec0 | 2368 | ofproto_get_port(const struct ofproto *ofproto, ofp_port_t ofp_port) |
ca0f572c BP |
2369 | { |
2370 | struct ofport *port; | |
2371 | ||
f9c0c3ec | 2372 | HMAP_FOR_EACH_IN_BUCKET (port, hmap_node, hash_ofp_port(ofp_port), |
4e022ec0 | 2373 | &ofproto->ports) { |
abe529af | 2374 | if (port->ofp_port == ofp_port) { |
ca0f572c BP |
2375 | return port; |
2376 | } | |
2377 | } | |
2378 | return NULL; | |
2379 | } | |
2380 | ||
fdcea803 GS |
2381 | static long long int |
2382 | ofport_get_usage(const struct ofproto *ofproto, ofp_port_t ofp_port) | |
2383 | { | |
2384 | struct ofport_usage *usage; | |
2385 | ||
2386 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2387 | &ofproto->ofport_usage) { | |
2388 | if (usage->ofp_port == ofp_port) { | |
2389 | return usage->last_used; | |
2390 | } | |
2391 | } | |
2392 | return 0; | |
2393 | } | |
2394 | ||
2395 | static void | |
2396 | ofport_set_usage(struct ofproto *ofproto, ofp_port_t ofp_port, | |
2397 | long long int last_used) | |
2398 | { | |
2399 | struct ofport_usage *usage; | |
2400 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2401 | &ofproto->ofport_usage) { | |
2402 | if (usage->ofp_port == ofp_port) { | |
2403 | usage->last_used = last_used; | |
2404 | return; | |
2405 | } | |
2406 | } | |
2407 | ovs_assert(last_used == LLONG_MAX); | |
2408 | ||
2409 | usage = xmalloc(sizeof *usage); | |
2410 | usage->ofp_port = ofp_port; | |
2411 | usage->last_used = last_used; | |
2412 | hmap_insert(&ofproto->ofport_usage, &usage->hmap_node, | |
2413 | hash_ofp_port(ofp_port)); | |
2414 | } | |
2415 | ||
865b26a4 GS |
2416 | static void |
2417 | ofport_remove_usage(struct ofproto *ofproto, ofp_port_t ofp_port) | |
2418 | { | |
2419 | struct ofport_usage *usage; | |
2420 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2421 | &ofproto->ofport_usage) { | |
2422 | if (usage->ofp_port == ofp_port) { | |
2423 | hmap_remove(&ofproto->ofport_usage, &usage->hmap_node); | |
2424 | free(usage); | |
2425 | break; | |
2426 | } | |
2427 | } | |
2428 | } | |
2429 | ||
6527c598 PS |
2430 | int |
2431 | ofproto_port_get_stats(const struct ofport *port, struct netdev_stats *stats) | |
2432 | { | |
2433 | struct ofproto *ofproto = port->ofproto; | |
2434 | int error; | |
2435 | ||
2436 | if (ofproto->ofproto_class->port_get_stats) { | |
2437 | error = ofproto->ofproto_class->port_get_stats(port, stats); | |
2438 | } else { | |
2439 | error = EOPNOTSUPP; | |
2440 | } | |
2441 | ||
2442 | return error; | |
2443 | } | |
2444 | ||
064af421 | 2445 | static void |
b33951b8 | 2446 | update_port(struct ofproto *ofproto, const char *name) |
064af421 | 2447 | { |
abe529af | 2448 | struct ofproto_port ofproto_port; |
9e1fd49b | 2449 | struct ofputil_phy_port pp; |
b33951b8 BP |
2450 | struct netdev *netdev; |
2451 | struct ofport *port; | |
064af421 BP |
2452 | |
2453 | COVERAGE_INC(ofproto_update_port); | |
c874dc6d | 2454 | |
b33951b8 | 2455 | /* Fetch 'name''s location and properties from the datapath. */ |
abe529af | 2456 | netdev = (!ofproto_port_query_by_name(ofproto, name, &ofproto_port) |
fbfa2911 | 2457 | ? ofport_open(ofproto, &ofproto_port, &pp) |
b33951b8 | 2458 | : NULL); |
4e022ec0 | 2459 | |
b33951b8 | 2460 | if (netdev) { |
abe529af | 2461 | port = ofproto_get_port(ofproto, ofproto_port.ofp_port); |
b33951b8 | 2462 | if (port && !strcmp(netdev_get_name(port->netdev), name)) { |
e65942a0 BP |
2463 | struct netdev *old_netdev = port->netdev; |
2464 | ||
b33951b8 | 2465 | /* 'name' hasn't changed location. Any properties changed? */ |
9e1fd49b BP |
2466 | if (!ofport_equal(&port->pp, &pp)) { |
2467 | ofport_modified(port, &pp); | |
abe529af BP |
2468 | } |
2469 | ||
ada3428f | 2470 | update_mtu(ofproto, port); |
9197df76 | 2471 | |
e65942a0 BP |
2472 | /* Install the newly opened netdev in case it has changed. |
2473 | * Don't close the old netdev yet in case port_modified has to | |
2474 | * remove a retained reference to it.*/ | |
abe529af | 2475 | port->netdev = netdev; |
61501798 | 2476 | port->change_seq = netdev_get_change_seq(netdev); |
abe529af BP |
2477 | |
2478 | if (port->ofproto->ofproto_class->port_modified) { | |
2479 | port->ofproto->ofproto_class->port_modified(port); | |
b33951b8 | 2480 | } |
e65942a0 BP |
2481 | |
2482 | netdev_close(old_netdev); | |
b33951b8 BP |
2483 | } else { |
2484 | /* If 'port' is nonnull then its name differs from 'name' and thus | |
2485 | * we should delete it. If we think there's a port named 'name' | |
2486 | * then its port number must be wrong now so delete it too. */ | |
2487 | if (port) { | |
0f7d71a5 | 2488 | ofport_remove(port); |
b33951b8 BP |
2489 | } |
2490 | ofport_remove_with_name(ofproto, name); | |
9e1fd49b | 2491 | ofport_install(ofproto, netdev, &pp); |
c874dc6d | 2492 | } |
b33951b8 BP |
2493 | } else { |
2494 | /* Any port named 'name' is gone now. */ | |
2495 | ofport_remove_with_name(ofproto, name); | |
c874dc6d | 2496 | } |
abe529af | 2497 | ofproto_port_destroy(&ofproto_port); |
064af421 BP |
2498 | } |
2499 | ||
2500 | static int | |
2501 | init_ports(struct ofproto *p) | |
2502 | { | |
abe529af BP |
2503 | struct ofproto_port_dump dump; |
2504 | struct ofproto_port ofproto_port; | |
e1b1d06a | 2505 | struct shash_node *node, *next; |
abe529af BP |
2506 | |
2507 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { | |
e1b1d06a JP |
2508 | const char *name = ofproto_port.name; |
2509 | ||
2510 | if (shash_find(&p->port_by_name, name)) { | |
fbfa2911 | 2511 | VLOG_WARN_RL(&rl, "%s: ignoring duplicate device %s in datapath", |
e1b1d06a | 2512 | p->name, name); |
abe529af | 2513 | } else { |
9e1fd49b | 2514 | struct ofputil_phy_port pp; |
b33951b8 BP |
2515 | struct netdev *netdev; |
2516 | ||
e1b1d06a JP |
2517 | /* Check if an OpenFlow port number had been requested. */ |
2518 | node = shash_find(&init_ofp_ports, name); | |
2519 | if (node) { | |
2520 | const struct iface_hint *iface_hint = node->data; | |
4e022ec0 AW |
2521 | simap_put(&p->ofp_requests, name, |
2522 | ofp_to_u16(iface_hint->ofp_port)); | |
e1b1d06a JP |
2523 | } |
2524 | ||
fbfa2911 | 2525 | netdev = ofport_open(p, &ofproto_port, &pp); |
b33951b8 | 2526 | if (netdev) { |
9e1fd49b | 2527 | ofport_install(p, netdev, &pp); |
430dbb14 | 2528 | if (ofp_to_u16(ofproto_port.ofp_port) < p->max_ports) { |
7c35397c | 2529 | p->alloc_port_no = MAX(p->alloc_port_no, |
430dbb14 | 2530 | ofp_to_u16(ofproto_port.ofp_port)); |
7c35397c | 2531 | } |
064af421 BP |
2532 | } |
2533 | } | |
2534 | } | |
b0ec0f27 | 2535 | |
e1b1d06a | 2536 | SHASH_FOR_EACH_SAFE(node, next, &init_ofp_ports) { |
4f9e08a5 | 2537 | struct iface_hint *iface_hint = node->data; |
e1b1d06a JP |
2538 | |
2539 | if (!strcmp(iface_hint->br_name, p->name)) { | |
2540 | free(iface_hint->br_name); | |
2541 | free(iface_hint->br_type); | |
4f9e08a5 | 2542 | free(iface_hint); |
e1b1d06a JP |
2543 | shash_delete(&init_ofp_ports, node); |
2544 | } | |
2545 | } | |
2546 | ||
064af421 BP |
2547 | return 0; |
2548 | } | |
9197df76 JP |
2549 | |
2550 | /* Find the minimum MTU of all non-datapath devices attached to 'p'. | |
2551 | * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */ | |
2552 | static int | |
2553 | find_min_mtu(struct ofproto *p) | |
2554 | { | |
2555 | struct ofport *ofport; | |
2556 | int mtu = 0; | |
2557 | ||
2558 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2559 | struct netdev *netdev = ofport->netdev; | |
2560 | int dev_mtu; | |
2561 | ||
2562 | /* Skip any internal ports, since that's what we're trying to | |
2563 | * set. */ | |
2564 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
2565 | continue; | |
2566 | } | |
2567 | ||
2568 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2569 | continue; | |
2570 | } | |
2571 | if (!mtu || dev_mtu < mtu) { | |
2572 | mtu = dev_mtu; | |
2573 | } | |
2574 | } | |
2575 | ||
2576 | return mtu ? mtu: ETH_PAYLOAD_MAX; | |
2577 | } | |
2578 | ||
ada3428f PS |
2579 | /* Update MTU of all datapath devices on 'p' to the minimum of the |
2580 | * non-datapath ports in event of 'port' added or changed. */ | |
9197df76 | 2581 | static void |
ada3428f | 2582 | update_mtu(struct ofproto *p, struct ofport *port) |
9197df76 JP |
2583 | { |
2584 | struct ofport *ofport; | |
ada3428f PS |
2585 | struct netdev *netdev = port->netdev; |
2586 | int dev_mtu, old_min; | |
2587 | ||
2588 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2589 | port->mtu = 0; | |
2590 | return; | |
2591 | } | |
2592 | if (!strcmp(netdev_get_type(port->netdev), "internal")) { | |
2593 | if (dev_mtu > p->min_mtu) { | |
2594 | if (!netdev_set_mtu(port->netdev, p->min_mtu)) { | |
2595 | dev_mtu = p->min_mtu; | |
2596 | } | |
2597 | } | |
2598 | port->mtu = dev_mtu; | |
2599 | return; | |
2600 | } | |
2601 | ||
2602 | /* For non-internal port find new min mtu. */ | |
2603 | old_min = p->min_mtu; | |
2604 | port->mtu = dev_mtu; | |
2605 | p->min_mtu = find_min_mtu(p); | |
2606 | if (p->min_mtu == old_min) { | |
2607 | return; | |
2608 | } | |
9197df76 JP |
2609 | |
2610 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2611 | struct netdev *netdev = ofport->netdev; | |
2612 | ||
2613 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
ada3428f PS |
2614 | if (!netdev_set_mtu(netdev, p->min_mtu)) { |
2615 | ofport->mtu = p->min_mtu; | |
2616 | } | |
9197df76 JP |
2617 | } |
2618 | } | |
2619 | } | |
064af421 | 2620 | \f |
f416c8d6 JR |
2621 | static void |
2622 | ofproto_rule_destroy__(struct rule *rule) | |
2623 | OVS_NO_THREAD_SAFETY_ANALYSIS | |
2624 | { | |
2625 | cls_rule_destroy(CONST_CAST(struct cls_rule *, &rule->cr)); | |
2626 | rule_actions_destroy(rule_get_actions(rule)); | |
2627 | ovs_mutex_destroy(&rule->mutex); | |
2628 | rule->ofproto->ofproto_class->rule_dealloc(rule); | |
2629 | } | |
2630 | ||
2631 | static void | |
2632 | rule_destroy_cb(struct rule *rule) | |
2633 | { | |
2634 | rule->ofproto->ofproto_class->rule_destruct(rule); | |
2635 | ofproto_rule_destroy__(rule); | |
2636 | } | |
2637 | ||
a2143702 BP |
2638 | void |
2639 | ofproto_rule_ref(struct rule *rule) | |
064af421 | 2640 | { |
1eae3d33 | 2641 | if (rule) { |
37bec3d3 | 2642 | ovs_refcount_ref(&rule->ref_count); |
a2143702 BP |
2643 | } |
2644 | } | |
2645 | ||
f5d16e55 JR |
2646 | bool |
2647 | ofproto_rule_try_ref(struct rule *rule) | |
2648 | { | |
2649 | if (rule) { | |
2650 | return ovs_refcount_try_ref_rcu(&rule->ref_count); | |
2651 | } | |
2652 | return false; | |
2653 | } | |
2654 | ||
f416c8d6 JR |
2655 | /* Decrements 'rule''s ref_count and schedules 'rule' to be destroyed if the |
2656 | * ref_count reaches 0. | |
2657 | * | |
2658 | * Use of RCU allows short term use (between RCU quiescent periods) without | |
2659 | * keeping a reference. A reference must be taken if the rule needs to | |
2660 | * stay around accross the RCU quiescent periods. */ | |
a2143702 BP |
2661 | void |
2662 | ofproto_rule_unref(struct rule *rule) | |
2663 | { | |
24f83812 | 2664 | if (rule && ovs_refcount_unref_relaxed(&rule->ref_count) == 1) { |
f416c8d6 | 2665 | ovsrcu_postpone(rule_destroy_cb, rule); |
1eae3d33 | 2666 | } |
064af421 BP |
2667 | } |
2668 | ||
809c7548 RW |
2669 | void |
2670 | ofproto_group_ref(struct ofgroup *group) | |
2671 | { | |
2672 | if (group) { | |
2673 | ovs_refcount_ref(&group->ref_count); | |
2674 | } | |
2675 | } | |
2676 | ||
2677 | void | |
2678 | ofproto_group_unref(struct ofgroup *group) | |
2679 | { | |
2680 | if (group && ovs_refcount_unref(&group->ref_count) == 1) { | |
2681 | group->ofproto->ofproto_class->group_destruct(group); | |
2682 | ofputil_bucket_list_destroy(&group->buckets); | |
2683 | group->ofproto->ofproto_class->group_dealloc(group); | |
2684 | } | |
2685 | } | |
2686 | ||
65efd2ab JR |
2687 | static uint32_t get_provider_meter_id(const struct ofproto *, |
2688 | uint32_t of_meter_id); | |
2689 | ||
dc723c44 JR |
2690 | /* Creates and returns a new 'struct rule_actions', whose actions are a copy |
2691 | * of from the 'ofpacts_len' bytes of 'ofpacts'. */ | |
2692 | const struct rule_actions * | |
4c7562c5 | 2693 | rule_actions_create(const struct ofpact *ofpacts, size_t ofpacts_len) |
6f00e29b BP |
2694 | { |
2695 | struct rule_actions *actions; | |
2696 | ||
dc723c44 | 2697 | actions = xmalloc(sizeof *actions + ofpacts_len); |
6f00e29b | 2698 | actions->ofpacts_len = ofpacts_len; |
4c7562c5 | 2699 | actions->has_meter = ofpacts_get_meter(ofpacts, ofpacts_len) != 0; |
dc723c44 | 2700 | memcpy(actions->ofpacts, ofpacts, ofpacts_len); |
65efd2ab | 2701 | |
35f48b8b BP |
2702 | actions->has_learn_with_delete = (next_learn_with_delete(actions, NULL) |
2703 | != NULL); | |
2704 | ||
6f00e29b BP |
2705 | return actions; |
2706 | } | |
2707 | ||
dc723c44 | 2708 | /* Free the actions after the RCU quiescent period is reached. */ |
6f00e29b | 2709 | void |
dc723c44 | 2710 | rule_actions_destroy(const struct rule_actions *actions) |
6f00e29b | 2711 | { |
06a0f3e2 | 2712 | if (actions) { |
dc723c44 | 2713 | ovsrcu_postpone(free, CONST_CAST(struct rule_actions *, actions)); |
6f00e29b BP |
2714 | } |
2715 | } | |
2716 | ||
bcf84111 | 2717 | /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action |
f25d0cf3 | 2718 | * that outputs to 'port' (output to OFPP_FLOOD and OFPP_ALL doesn't count). */ |
cdbdeeda | 2719 | bool |
4e022ec0 | 2720 | ofproto_rule_has_out_port(const struct rule *rule, ofp_port_t port) |
15aaf599 | 2721 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 2722 | { |
06a0f3e2 BP |
2723 | if (port == OFPP_ANY) { |
2724 | return true; | |
2725 | } else { | |
2726 | const struct rule_actions *actions = rule_get_actions(rule); | |
2727 | return ofpacts_output_to_port(actions->ofpacts, | |
2728 | actions->ofpacts_len, port); | |
2729 | } | |
064af421 BP |
2730 | } |
2731 | ||
7395c052 | 2732 | /* Returns true if 'rule' has group and equals group_id. */ |
74e79b7c | 2733 | static bool |
7395c052 | 2734 | ofproto_rule_has_out_group(const struct rule *rule, uint32_t group_id) |
15aaf599 | 2735 | OVS_REQUIRES(ofproto_mutex) |
7395c052 | 2736 | { |
06a0f3e2 BP |
2737 | if (group_id == OFPG_ANY) { |
2738 | return true; | |
2739 | } else { | |
2740 | const struct rule_actions *actions = rule_get_actions(rule); | |
2741 | return ofpacts_output_to_group(actions->ofpacts, | |
2742 | actions->ofpacts_len, group_id); | |
2743 | } | |
7395c052 NZ |
2744 | } |
2745 | ||
35412852 BP |
2746 | static void |
2747 | rule_execute_destroy(struct rule_execute *e) | |
eedc0097 | 2748 | { |
35412852 BP |
2749 | ofproto_rule_unref(e->rule); |
2750 | list_remove(&e->list_node); | |
2751 | free(e); | |
2752 | } | |
eedc0097 | 2753 | |
35412852 BP |
2754 | /* Executes all "rule_execute" operations queued up in ofproto->rule_executes, |
2755 | * by passing them to the ofproto provider. */ | |
2756 | static void | |
2757 | run_rule_executes(struct ofproto *ofproto) | |
15aaf599 | 2758 | OVS_EXCLUDED(ofproto_mutex) |
35412852 BP |
2759 | { |
2760 | struct rule_execute *e, *next; | |
2761 | struct list executes; | |
2762 | ||
2763 | guarded_list_pop_all(&ofproto->rule_executes, &executes); | |
2764 | LIST_FOR_EACH_SAFE (e, next, list_node, &executes) { | |
35412852 BP |
2765 | struct flow flow; |
2766 | ||
b5e7e61a AZ |
2767 | flow_extract(e->packet, NULL, &flow); |
2768 | flow.in_port.ofp_port = e->in_port; | |
35412852 BP |
2769 | ofproto->ofproto_class->rule_execute(e->rule, &flow, e->packet); |
2770 | ||
2771 | rule_execute_destroy(e); | |
2772 | } | |
2773 | } | |
2774 | ||
2775 | /* Destroys and discards all "rule_execute" operations queued up in | |
2776 | * ofproto->rule_executes. */ | |
2777 | static void | |
2778 | destroy_rule_executes(struct ofproto *ofproto) | |
2779 | { | |
2780 | struct rule_execute *e, *next; | |
2781 | struct list executes; | |
2782 | ||
2783 | guarded_list_pop_all(&ofproto->rule_executes, &executes); | |
2784 | LIST_FOR_EACH_SAFE (e, next, list_node, &executes) { | |
2785 | ofpbuf_delete(e->packet); | |
2786 | rule_execute_destroy(e); | |
2787 | } | |
350a665f BP |
2788 | } |
2789 | ||
adcf00ba | 2790 | static bool |
834fe5cb | 2791 | rule_is_readonly(const struct rule *rule) |
5c67e4af | 2792 | { |
834fe5cb BP |
2793 | const struct oftable *table = &rule->ofproto->tables[rule->table_id]; |
2794 | return (table->flags & OFTABLE_READONLY) != 0; | |
5c67e4af | 2795 | } |
fa066f01 | 2796 | \f |
35f48b8b BP |
2797 | static uint32_t |
2798 | hash_learned_cookie(ovs_be64 cookie_, uint8_t table_id) | |
2799 | { | |
2800 | uint64_t cookie = (OVS_FORCE uint64_t) cookie_; | |
2801 | return hash_3words(cookie, cookie >> 32, table_id); | |
2802 | } | |
2803 | ||
2804 | static void | |
2805 | learned_cookies_update_one__(struct ofproto *ofproto, | |
2806 | const struct ofpact_learn *learn, | |
2807 | int delta, struct list *dead_cookies) | |
2808 | OVS_REQUIRES(ofproto_mutex) | |
2809 | { | |
2810 | uint32_t hash = hash_learned_cookie(learn->cookie, learn->table_id); | |
2811 | struct learned_cookie *c; | |
2812 | ||
2813 | HMAP_FOR_EACH_WITH_HASH (c, u.hmap_node, hash, &ofproto->learned_cookies) { | |
2814 | if (c->cookie == learn->cookie && c->table_id == learn->table_id) { | |
2815 | c->n += delta; | |
2816 | ovs_assert(c->n >= 0); | |
2817 | ||
2818 | if (!c->n) { | |
2819 | hmap_remove(&ofproto->learned_cookies, &c->u.hmap_node); | |
2820 | list_push_back(dead_cookies, &c->u.list_node); | |
2821 | } | |
2822 | ||
2823 | return; | |
2824 | } | |
2825 | } | |
2826 | ||
2827 | ovs_assert(delta > 0); | |
2828 | c = xmalloc(sizeof *c); | |
2829 | hmap_insert(&ofproto->learned_cookies, &c->u.hmap_node, hash); | |
2830 | c->cookie = learn->cookie; | |
2831 | c->table_id = learn->table_id; | |
2832 | c->n = delta; | |
2833 | } | |
2834 | ||
2835 | static const struct ofpact_learn * | |
2836 | next_learn_with_delete(const struct rule_actions *actions, | |
2837 | const struct ofpact_learn *start) | |
2838 | { | |
2839 | const struct ofpact *pos; | |
2840 | ||
2841 | for (pos = start ? ofpact_next(&start->ofpact) : actions->ofpacts; | |
2842 | pos < ofpact_end(actions->ofpacts, actions->ofpacts_len); | |
2843 | pos = ofpact_next(pos)) { | |
2844 | if (pos->type == OFPACT_LEARN) { | |
2845 | const struct ofpact_learn *learn = ofpact_get_LEARN(pos); | |
2846 | if (learn->flags & NX_LEARN_F_DELETE_LEARNED) { | |
2847 | return learn; | |
2848 | } | |
2849 | } | |
2850 | } | |
2851 | ||
2852 | return NULL; | |
2853 | } | |
2854 | ||
2855 | static void | |
2856 | learned_cookies_update__(struct ofproto *ofproto, | |
2857 | const struct rule_actions *actions, | |
2858 | int delta, struct list *dead_cookies) | |
2859 | OVS_REQUIRES(ofproto_mutex) | |
2860 | { | |
2861 | if (actions->has_learn_with_delete) { | |
2862 | const struct ofpact_learn *learn; | |
2863 | ||
2864 | for (learn = next_learn_with_delete(actions, NULL); learn; | |
2865 | learn = next_learn_with_delete(actions, learn)) { | |
2866 | learned_cookies_update_one__(ofproto, learn, delta, dead_cookies); | |
2867 | } | |
2868 | } | |
2869 | } | |
2870 | ||
2871 | static void | |
2872 | learned_cookies_inc(struct ofproto *ofproto, | |
2873 | const struct rule_actions *actions) | |
2874 | OVS_REQUIRES(ofproto_mutex) | |
2875 | { | |
2876 | learned_cookies_update__(ofproto, actions, +1, NULL); | |
2877 | } | |
2878 | ||
2879 | static void | |
2880 | learned_cookies_dec(struct ofproto *ofproto, | |
2881 | const struct rule_actions *actions, | |
2882 | struct list *dead_cookies) | |
2883 | OVS_REQUIRES(ofproto_mutex) | |
2884 | { | |
2885 | learned_cookies_update__(ofproto, actions, -1, dead_cookies); | |
2886 | } | |
2887 | ||
2888 | static void | |
2889 | learned_cookies_flush(struct ofproto *ofproto, struct list *dead_cookies) | |
2890 | OVS_REQUIRES(ofproto_mutex) | |
2891 | { | |
2892 | struct learned_cookie *c, *next; | |
2893 | ||
2894 | LIST_FOR_EACH_SAFE (c, next, u.list_node, dead_cookies) { | |
2895 | struct rule_criteria criteria; | |
2896 | struct rule_collection rules; | |
2897 | struct match match; | |
2898 | ||
2899 | match_init_catchall(&match); | |
2900 | rule_criteria_init(&criteria, c->table_id, &match, 0, | |
2901 | c->cookie, OVS_BE64_MAX, OFPP_ANY, OFPG_ANY); | |
2902 | rule_criteria_require_rw(&criteria, false); | |
2903 | collect_rules_loose(ofproto, &criteria, &rules); | |
2904 | delete_flows__(&rules, OFPRR_DELETE, NULL); | |
2905 | rule_criteria_destroy(&criteria); | |
2906 | rule_collection_destroy(&rules); | |
2907 | ||
2908 | list_remove(&c->u.list_node); | |
2909 | free(c); | |
2910 | } | |
2911 | } | |
2912 | \f | |
90bf1e07 | 2913 | static enum ofperr |
d1e2cf21 | 2914 | handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2915 | { |
b0421aa2 | 2916 | ofconn_send_reply(ofconn, make_echo_reply(oh)); |
064af421 | 2917 | return 0; |
064af421 BP |
2918 | } |
2919 | ||
3c1bb396 BP |
2920 | static void |
2921 | query_tables(struct ofproto *ofproto, | |
2922 | struct ofputil_table_features **featuresp, | |
2923 | struct ofputil_table_stats **statsp) | |
2924 | { | |
178742f9 BP |
2925 | struct mf_bitmap rw_fields = oxm_writable_fields(); |
2926 | struct mf_bitmap match = oxm_matchable_fields(); | |
2927 | struct mf_bitmap mask = oxm_maskable_fields(); | |
3c1bb396 BP |
2928 | |
2929 | struct ofputil_table_features *features; | |
2930 | struct ofputil_table_stats *stats; | |
2931 | int i; | |
2932 | ||
3c1bb396 BP |
2933 | features = *featuresp = xcalloc(ofproto->n_tables, sizeof *features); |
2934 | for (i = 0; i < ofproto->n_tables; i++) { | |
2935 | struct ofputil_table_features *f = &features[i]; | |
2936 | ||
2937 | f->table_id = i; | |
2938 | sprintf(f->name, "table%d", i); | |
2939 | f->metadata_match = OVS_BE64_MAX; | |
2940 | f->metadata_write = OVS_BE64_MAX; | |
afcea9ea | 2941 | atomic_read_relaxed(&ofproto->tables[i].miss_config, &f->miss_config); |
3c1bb396 BP |
2942 | f->max_entries = 1000000; |
2943 | ||
2944 | bitmap_set_multiple(f->nonmiss.next, i + 1, | |
2945 | ofproto->n_tables - (i + 1), true); | |
2946 | f->nonmiss.instructions = (1u << N_OVS_INSTRUCTIONS) - 1; | |
2947 | if (i == ofproto->n_tables - 1) { | |
2948 | f->nonmiss.instructions &= ~(1u << OVSINST_OFPIT11_GOTO_TABLE); | |
2949 | } | |
2950 | f->nonmiss.write.ofpacts = (UINT64_C(1) << N_OFPACTS) - 1; | |
2951 | f->nonmiss.write.set_fields = rw_fields; | |
2952 | f->nonmiss.apply = f->nonmiss.write; | |
2953 | f->miss = f->nonmiss; | |
2954 | ||
2955 | f->match = match; | |
2956 | f->mask = mask; | |
2957 | f->wildcard = match; | |
2958 | } | |
2959 | ||
2960 | if (statsp) { | |
2961 | stats = *statsp = xcalloc(ofproto->n_tables, sizeof *stats); | |
2962 | for (i = 0; i < ofproto->n_tables; i++) { | |
2963 | struct ofputil_table_stats *s = &stats[i]; | |
2964 | struct classifier *cls = &ofproto->tables[i].cls; | |
2965 | ||
2966 | s->table_id = i; | |
2967 | s->active_count = classifier_count(cls); | |
2968 | } | |
2969 | } else { | |
2970 | stats = NULL; | |
2971 | } | |
2972 | ||
2973 | ofproto->ofproto_class->query_tables(ofproto, features, stats); | |
2974 | ||
2975 | for (i = 0; i < ofproto->n_tables; i++) { | |
2976 | const struct oftable *table = &ofproto->tables[i]; | |
2977 | struct ofputil_table_features *f = &features[i]; | |
2978 | ||
2979 | if (table->name) { | |
2980 | ovs_strzcpy(f->name, table->name, sizeof f->name); | |
2981 | } | |
2982 | ||
2983 | if (table->max_flows < f->max_entries) { | |
2984 | f->max_entries = table->max_flows; | |
2985 | } | |
2986 | } | |
2987 | } | |
2988 | ||
2989 | static void | |
2990 | query_switch_features(struct ofproto *ofproto, | |
2991 | bool *arp_match_ip, uint64_t *ofpacts) | |
2992 | { | |
2993 | struct ofputil_table_features *features, *f; | |
2994 | ||
2995 | *arp_match_ip = false; | |
2996 | *ofpacts = 0; | |
2997 | ||
2998 | query_tables(ofproto, &features, NULL); | |
2999 | for (f = features; f < &features[ofproto->n_tables]; f++) { | |
3000 | *ofpacts |= f->nonmiss.apply.ofpacts | f->miss.apply.ofpacts; | |
3001 | if (bitmap_is_set(f->match.bm, MFF_ARP_SPA) || | |
3002 | bitmap_is_set(f->match.bm, MFF_ARP_TPA)) { | |
3003 | *arp_match_ip = true; | |
3004 | } | |
3005 | } | |
3006 | free(features); | |
3007 | ||
3008 | /* Sanity check. */ | |
3009 | ovs_assert(*ofpacts & (UINT64_C(1) << OFPACT_OUTPUT)); | |
3010 | } | |
3011 | ||
90bf1e07 | 3012 | static enum ofperr |
d1e2cf21 | 3013 | handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3014 | { |
64ff1d96 | 3015 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
9e1fd49b | 3016 | struct ofputil_switch_features features; |
064af421 | 3017 | struct ofport *port; |
6c1491fb | 3018 | bool arp_match_ip; |
9e1fd49b | 3019 | struct ofpbuf *b; |
064af421 | 3020 | |
3c1bb396 | 3021 | query_switch_features(ofproto, &arp_match_ip, &features.ofpacts); |
064af421 | 3022 | |
9e1fd49b BP |
3023 | features.datapath_id = ofproto->datapath_id; |
3024 | features.n_buffers = pktbuf_capacity(); | |
adcf00ba | 3025 | features.n_tables = ofproto_get_n_visible_tables(ofproto); |
9e1fd49b | 3026 | features.capabilities = (OFPUTIL_C_FLOW_STATS | OFPUTIL_C_TABLE_STATS | |
4efe455d BP |
3027 | OFPUTIL_C_PORT_STATS | OFPUTIL_C_QUEUE_STATS | |
3028 | OFPUTIL_C_GROUP_STATS); | |
6c1491fb | 3029 | if (arp_match_ip) { |
9e1fd49b | 3030 | features.capabilities |= OFPUTIL_C_ARP_MATCH_IP; |
6c1491fb | 3031 | } |
2e1ae200 JR |
3032 | /* FIXME: Fill in proper features.auxiliary_id for auxiliary connections */ |
3033 | features.auxiliary_id = 0; | |
9e1fd49b BP |
3034 | b = ofputil_encode_switch_features(&features, ofconn_get_protocol(ofconn), |
3035 | oh->xid); | |
64ff1d96 | 3036 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
9e1fd49b | 3037 | ofputil_put_switch_features_port(&port->pp, b); |
064af421 | 3038 | } |
064af421 | 3039 | |
9e1fd49b | 3040 | ofconn_send_reply(ofconn, b); |
064af421 BP |
3041 | return 0; |
3042 | } | |
064af421 | 3043 | |
90bf1e07 | 3044 | static enum ofperr |
d1e2cf21 | 3045 | handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3046 | { |
64ff1d96 | 3047 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 | 3048 | struct ofp_switch_config *osc; |
f0fd1a17 | 3049 | enum ofp_config_flags flags; |
7257b535 | 3050 | struct ofpbuf *buf; |
959a2ecd | 3051 | |
064af421 | 3052 | /* Send reply. */ |
982697a4 BP |
3053 | buf = ofpraw_alloc_reply(OFPRAW_OFPT_GET_CONFIG_REPLY, oh, 0); |
3054 | osc = ofpbuf_put_uninit(buf, sizeof *osc); | |
f0fd1a17 | 3055 | flags = ofproto->frag_handling; |
2e1ae200 JR |
3056 | /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */ |
3057 | if (oh->version < OFP13_VERSION | |
3058 | && ofconn_get_invalid_ttl_to_controller(ofconn)) { | |
f0fd1a17 PS |
3059 | flags |= OFPC_INVALID_TTL_TO_CONTROLLER; |
3060 | } | |
3061 | osc->flags = htons(flags); | |
810605a2 | 3062 | osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn)); |
b0421aa2 | 3063 | ofconn_send_reply(ofconn, buf); |
2d70a31a | 3064 | |
064af421 BP |
3065 | return 0; |
3066 | } | |
064af421 | 3067 | |
90bf1e07 | 3068 | static enum ofperr |
982697a4 | 3069 | handle_set_config(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3070 | { |
982697a4 | 3071 | const struct ofp_switch_config *osc = ofpmsg_body(oh); |
64ff1d96 | 3072 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
d1e2cf21 | 3073 | uint16_t flags = ntohs(osc->flags); |
2d70a31a | 3074 | |
7257b535 | 3075 | if (ofconn_get_type(ofconn) != OFCONN_PRIMARY |
f4f1ea7e | 3076 | || ofconn_get_role(ofconn) != OFPCR12_ROLE_SLAVE) { |
7257b535 BP |
3077 | enum ofp_config_flags cur = ofproto->frag_handling; |
3078 | enum ofp_config_flags next = flags & OFPC_FRAG_MASK; | |
3079 | ||
cb22974d | 3080 | ovs_assert((cur & OFPC_FRAG_MASK) == cur); |
7257b535 BP |
3081 | if (cur != next) { |
3082 | if (ofproto->ofproto_class->set_frag_handling(ofproto, next)) { | |
3083 | ofproto->frag_handling = next; | |
3084 | } else { | |
3085 | VLOG_WARN_RL(&rl, "%s: unsupported fragment handling mode %s", | |
3086 | ofproto->name, | |
3087 | ofputil_frag_handling_to_string(next)); | |
3088 | } | |
064af421 BP |
3089 | } |
3090 | } | |
2e1ae200 | 3091 | /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */ |
f0fd1a17 | 3092 | ofconn_set_invalid_ttl_to_controller(ofconn, |
2e1ae200 JR |
3093 | (oh->version < OFP13_VERSION |
3094 | && flags & OFPC_INVALID_TTL_TO_CONTROLLER)); | |
ebe482fd | 3095 | |
810605a2 | 3096 | ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len)); |
0ad9b732 | 3097 | |
064af421 | 3098 | return 0; |
064af421 BP |
3099 | } |
3100 | ||
9deba63b | 3101 | /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow |
90bf1e07 BP |
3102 | * error message code for the caller to propagate upward. Otherwise, returns |
3103 | * 0. | |
3104 | * | |
3105 | * The log message mentions 'msg_type'. */ | |
3106 | static enum ofperr | |
3107 | reject_slave_controller(struct ofconn *ofconn) | |
9deba63b | 3108 | { |
1ce0a5fa | 3109 | if (ofconn_get_type(ofconn) == OFCONN_PRIMARY |
f4f1ea7e | 3110 | && ofconn_get_role(ofconn) == OFPCR12_ROLE_SLAVE) { |
90bf1e07 | 3111 | return OFPERR_OFPBRC_EPERM; |
9deba63b BP |
3112 | } else { |
3113 | return 0; | |
3114 | } | |
3115 | } | |
3116 | ||
7e9f8266 BP |
3117 | /* Checks that the 'ofpacts_len' bytes of action in 'ofpacts' are appropriate |
3118 | * for 'ofproto': | |
3119 | * | |
3120 | * - If they use a meter, then 'ofproto' has that meter configured. | |
3121 | * | |
3122 | * - If they use any groups, then 'ofproto' has that group configured. | |
3123 | * | |
3124 | * Returns 0 if successful, otherwise an OpenFlow error. */ | |
9cae45dc JR |
3125 | static enum ofperr |
3126 | ofproto_check_ofpacts(struct ofproto *ofproto, | |
7e9f8266 | 3127 | const struct ofpact ofpacts[], size_t ofpacts_len) |
9cae45dc | 3128 | { |
84d68566 | 3129 | const struct ofpact *a; |
9cae45dc JR |
3130 | uint32_t mid; |
3131 | ||
7e9f8266 BP |
3132 | mid = ofpacts_get_meter(ofpacts, ofpacts_len); |
3133 | if (mid && get_provider_meter_id(ofproto, mid) == UINT32_MAX) { | |
3134 | return OFPERR_OFPMMFC_INVALID_METER; | |
9cae45dc JR |
3135 | } |
3136 | ||
84d68566 | 3137 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
7e9f8266 BP |
3138 | if (a->type == OFPACT_GROUP |
3139 | && !ofproto_group_exists(ofproto, ofpact_get_GROUP(a)->group_id)) { | |
3140 | return OFPERR_OFPBAC_BAD_OUT_GROUP; | |
84d68566 SH |
3141 | } |
3142 | } | |
3143 | ||
9cae45dc JR |
3144 | return 0; |
3145 | } | |
3146 | ||
90bf1e07 | 3147 | static enum ofperr |
982697a4 | 3148 | handle_packet_out(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3149 | { |
64ff1d96 | 3150 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
c6a93eb7 BP |
3151 | struct ofputil_packet_out po; |
3152 | struct ofpbuf *payload; | |
f25d0cf3 BP |
3153 | uint64_t ofpacts_stub[1024 / 8]; |
3154 | struct ofpbuf ofpacts; | |
ae412e7d | 3155 | struct flow flow; |
90bf1e07 | 3156 | enum ofperr error; |
064af421 | 3157 | |
ac51afaf BP |
3158 | COVERAGE_INC(ofproto_packet_out); |
3159 | ||
76589937 | 3160 | error = reject_slave_controller(ofconn); |
9deba63b | 3161 | if (error) { |
f25d0cf3 | 3162 | goto exit; |
9deba63b BP |
3163 | } |
3164 | ||
c6a93eb7 | 3165 | /* Decode message. */ |
f25d0cf3 | 3166 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
982697a4 | 3167 | error = ofputil_decode_packet_out(&po, oh, &ofpacts); |
064af421 | 3168 | if (error) { |
f25d0cf3 | 3169 | goto exit_free_ofpacts; |
064af421 | 3170 | } |
430dbb14 | 3171 | if (ofp_to_u16(po.in_port) >= p->max_ports |
4e022ec0 | 3172 | && ofp_to_u16(po.in_port) < ofp_to_u16(OFPP_MAX)) { |
2e1bfcb6 | 3173 | error = OFPERR_OFPBRC_BAD_PORT; |
91858960 BP |
3174 | goto exit_free_ofpacts; |
3175 | } | |
064af421 | 3176 | |
ac51afaf | 3177 | /* Get payload. */ |
c6a93eb7 BP |
3178 | if (po.buffer_id != UINT32_MAX) { |
3179 | error = ofconn_pktbuf_retrieve(ofconn, po.buffer_id, &payload, NULL); | |
3180 | if (error || !payload) { | |
f25d0cf3 | 3181 | goto exit_free_ofpacts; |
064af421 | 3182 | } |
064af421 | 3183 | } else { |
bb622f82 BP |
3184 | /* Ensure that the L3 header is 32-bit aligned. */ |
3185 | payload = ofpbuf_clone_data_with_headroom(po.packet, po.packet_len, 2); | |
e1154f71 BP |
3186 | } |
3187 | ||
548de4dd | 3188 | /* Verify actions against packet, then send packet if successful. */ |
b5e7e61a AZ |
3189 | flow_extract(payload, NULL, &flow); |
3190 | flow.in_port.ofp_port = po.in_port; | |
7e9f8266 | 3191 | error = ofproto_check_ofpacts(p, po.ofpacts, po.ofpacts_len); |
548de4dd BP |
3192 | if (!error) { |
3193 | error = p->ofproto_class->packet_out(p, payload, &flow, | |
3194 | po.ofpacts, po.ofpacts_len); | |
3195 | } | |
c6a93eb7 | 3196 | ofpbuf_delete(payload); |
abe529af | 3197 | |
f25d0cf3 BP |
3198 | exit_free_ofpacts: |
3199 | ofpbuf_uninit(&ofpacts); | |
3200 | exit: | |
abe529af | 3201 | return error; |
064af421 BP |
3202 | } |
3203 | ||
3204 | static void | |
2a6f78e0 | 3205 | update_port_config(struct ofconn *ofconn, struct ofport *port, |
9e1fd49b BP |
3206 | enum ofputil_port_config config, |
3207 | enum ofputil_port_config mask) | |
064af421 | 3208 | { |
2a6f78e0 | 3209 | enum ofputil_port_config toggle = (config ^ port->pp.config) & mask; |
abe529af | 3210 | |
2a6f78e0 BP |
3211 | if (toggle & OFPUTIL_PC_PORT_DOWN |
3212 | && (config & OFPUTIL_PC_PORT_DOWN | |
3213 | ? netdev_turn_flags_off(port->netdev, NETDEV_UP, NULL) | |
3214 | : netdev_turn_flags_on(port->netdev, NETDEV_UP, NULL))) { | |
3215 | /* We tried to bring the port up or down, but it failed, so don't | |
3216 | * update the "down" bit. */ | |
9e1fd49b | 3217 | toggle &= ~OFPUTIL_PC_PORT_DOWN; |
064af421 | 3218 | } |
abe529af | 3219 | |
2a6f78e0 BP |
3220 | if (toggle) { |
3221 | enum ofputil_port_config old_config = port->pp.config; | |
3222 | port->pp.config ^= toggle; | |
abe529af | 3223 | port->ofproto->ofproto_class->port_reconfigured(port, old_config); |
2a6f78e0 BP |
3224 | connmgr_send_port_status(port->ofproto->connmgr, ofconn, &port->pp, |
3225 | OFPPR_MODIFY); | |
064af421 BP |
3226 | } |
3227 | } | |
3228 | ||
90bf1e07 | 3229 | static enum ofperr |
d1e2cf21 | 3230 | handle_port_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3231 | { |
64ff1d96 | 3232 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
9e1fd49b | 3233 | struct ofputil_port_mod pm; |
064af421 | 3234 | struct ofport *port; |
9e1fd49b | 3235 | enum ofperr error; |
064af421 | 3236 | |
76589937 | 3237 | error = reject_slave_controller(ofconn); |
9deba63b BP |
3238 | if (error) { |
3239 | return error; | |
3240 | } | |
064af421 | 3241 | |
18cc69d9 | 3242 | error = ofputil_decode_port_mod(oh, &pm, false); |
9e1fd49b BP |
3243 | if (error) { |
3244 | return error; | |
3245 | } | |
3246 | ||
3247 | port = ofproto_get_port(p, pm.port_no); | |
064af421 | 3248 | if (!port) { |
90bf1e07 | 3249 | return OFPERR_OFPPMFC_BAD_PORT; |
9e1fd49b | 3250 | } else if (!eth_addr_equals(port->pp.hw_addr, pm.hw_addr)) { |
90bf1e07 | 3251 | return OFPERR_OFPPMFC_BAD_HW_ADDR; |
064af421 | 3252 | } else { |
2a6f78e0 | 3253 | update_port_config(ofconn, port, pm.config, pm.mask); |
9e1fd49b BP |
3254 | if (pm.advertise) { |
3255 | netdev_set_advertisements(port->netdev, pm.advertise); | |
064af421 BP |
3256 | } |
3257 | } | |
3258 | return 0; | |
3259 | } | |
3260 | ||
90bf1e07 | 3261 | static enum ofperr |
3269c562 | 3262 | handle_desc_stats_request(struct ofconn *ofconn, |
982697a4 | 3263 | const struct ofp_header *request) |
064af421 | 3264 | { |
061bfea4 BP |
3265 | static const char *default_mfr_desc = "Nicira, Inc."; |
3266 | static const char *default_hw_desc = "Open vSwitch"; | |
3267 | static const char *default_sw_desc = VERSION; | |
3268 | static const char *default_serial_desc = "None"; | |
3269 | static const char *default_dp_desc = "None"; | |
3270 | ||
64ff1d96 | 3271 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 BP |
3272 | struct ofp_desc_stats *ods; |
3273 | struct ofpbuf *msg; | |
3274 | ||
982697a4 BP |
3275 | msg = ofpraw_alloc_stats_reply(request, 0); |
3276 | ods = ofpbuf_put_zeros(msg, sizeof *ods); | |
061bfea4 BP |
3277 | ovs_strlcpy(ods->mfr_desc, p->mfr_desc ? p->mfr_desc : default_mfr_desc, |
3278 | sizeof ods->mfr_desc); | |
3279 | ovs_strlcpy(ods->hw_desc, p->hw_desc ? p->hw_desc : default_hw_desc, | |
3280 | sizeof ods->hw_desc); | |
3281 | ovs_strlcpy(ods->sw_desc, p->sw_desc ? p->sw_desc : default_sw_desc, | |
3282 | sizeof ods->sw_desc); | |
3283 | ovs_strlcpy(ods->serial_num, | |
3284 | p->serial_desc ? p->serial_desc : default_serial_desc, | |
3285 | sizeof ods->serial_num); | |
3286 | ovs_strlcpy(ods->dp_desc, p->dp_desc ? p->dp_desc : default_dp_desc, | |
3287 | sizeof ods->dp_desc); | |
b0421aa2 | 3288 | ofconn_send_reply(ofconn, msg); |
064af421 BP |
3289 | |
3290 | return 0; | |
3291 | } | |
3292 | ||
90bf1e07 | 3293 | static enum ofperr |
3269c562 | 3294 | handle_table_stats_request(struct ofconn *ofconn, |
982697a4 | 3295 | const struct ofp_header *request) |
064af421 | 3296 | { |
3c1bb396 BP |
3297 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
3298 | struct ofputil_table_features *features; | |
08d1e234 | 3299 | struct ofputil_table_stats *stats; |
3c1bb396 | 3300 | struct ofpbuf *reply; |
6c1491fb | 3301 | size_t i; |
064af421 | 3302 | |
3c1bb396 | 3303 | query_tables(ofproto, &features, &stats); |
254750ce | 3304 | |
3c1bb396 BP |
3305 | reply = ofputil_encode_table_stats_reply(request); |
3306 | for (i = 0; i < ofproto->n_tables; i++) { | |
3307 | if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) { | |
3308 | ofputil_append_table_stats_reply(reply, &stats[i], &features[i]); | |
254750ce BP |
3309 | } |
3310 | } | |
3c1bb396 | 3311 | ofconn_send_reply(ofconn, reply); |
254750ce | 3312 | |
3c1bb396 | 3313 | free(features); |
08d1e234 | 3314 | free(stats); |
307975da | 3315 | |
064af421 BP |
3316 | return 0; |
3317 | } | |
3318 | ||
3c4e10fb BP |
3319 | static enum ofperr |
3320 | handle_table_features_request(struct ofconn *ofconn, | |
3321 | const struct ofp_header *request) | |
3322 | { | |
3323 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
3324 | struct ofputil_table_features *features; | |
3325 | struct list replies; | |
3326 | struct ofpbuf msg; | |
3327 | size_t i; | |
3328 | ||
3329 | ofpbuf_use_const(&msg, request, ntohs(request->length)); | |
3330 | ofpraw_pull_assert(&msg); | |
3331 | if (ofpbuf_size(&msg) || ofpmp_more(request)) { | |
3332 | return OFPERR_OFPTFFC_EPERM; | |
3333 | } | |
3334 | ||
3335 | query_tables(ofproto, &features, NULL); | |
3336 | ||
3337 | ofpmp_init(&replies, request); | |
3338 | for (i = 0; i < ofproto->n_tables; i++) { | |
3339 | if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) { | |
3340 | ofputil_append_table_features_reply(&features[i], &replies); | |
3341 | } | |
3342 | } | |
3343 | ofconn_send_replies(ofconn, &replies); | |
3344 | ||
3345 | free(features); | |
3346 | ||
3347 | return 0; | |
3348 | } | |
3349 | ||
abaad8cf | 3350 | static void |
63f2140a | 3351 | append_port_stat(struct ofport *port, struct list *replies) |
abaad8cf | 3352 | { |
f8e4867e | 3353 | struct ofputil_port_stats ops = { .port_no = port->pp.port_no }; |
abaad8cf | 3354 | |
65e0be10 BP |
3355 | calc_duration(port->created, time_msec(), |
3356 | &ops.duration_sec, &ops.duration_nsec); | |
3357 | ||
d295e8e9 JP |
3358 | /* Intentionally ignore return value, since errors will set |
3359 | * 'stats' to all-1s, which is correct for OpenFlow, and | |
abaad8cf | 3360 | * netdev_get_stats() will log errors. */ |
f8e4867e SH |
3361 | ofproto_port_get_stats(port, &ops.stats); |
3362 | ||
3363 | ofputil_append_port_stat(replies, &ops); | |
abaad8cf JP |
3364 | } |
3365 | ||
70ae4f93 BP |
3366 | static void |
3367 | handle_port_request(struct ofconn *ofconn, | |
3368 | const struct ofp_header *request, ofp_port_t port_no, | |
3369 | void (*cb)(struct ofport *, struct list *replies)) | |
064af421 | 3370 | { |
70ae4f93 | 3371 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 | 3372 | struct ofport *port; |
63f2140a | 3373 | struct list replies; |
064af421 | 3374 | |
982697a4 | 3375 | ofpmp_init(&replies, request); |
7f05e7ab | 3376 | if (port_no != OFPP_ANY) { |
70ae4f93 | 3377 | port = ofproto_get_port(ofproto, port_no); |
abaad8cf | 3378 | if (port) { |
70ae4f93 | 3379 | cb(port, &replies); |
abaad8cf JP |
3380 | } |
3381 | } else { | |
70ae4f93 BP |
3382 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
3383 | cb(port, &replies); | |
abaad8cf | 3384 | } |
064af421 BP |
3385 | } |
3386 | ||
63f2140a | 3387 | ofconn_send_replies(ofconn, &replies); |
70ae4f93 BP |
3388 | } |
3389 | ||
3390 | static enum ofperr | |
3391 | handle_port_stats_request(struct ofconn *ofconn, | |
3392 | const struct ofp_header *request) | |
3393 | { | |
3394 | ofp_port_t port_no; | |
3395 | enum ofperr error; | |
3396 | ||
3397 | error = ofputil_decode_port_stats_request(request, &port_no); | |
3398 | if (!error) { | |
3399 | handle_port_request(ofconn, request, port_no, append_port_stat); | |
3400 | } | |
3401 | return error; | |
3402 | } | |
3403 | ||
3404 | static void | |
3405 | append_port_desc(struct ofport *port, struct list *replies) | |
3406 | { | |
3407 | ofputil_append_port_desc_stats_reply(&port->pp, replies); | |
064af421 BP |
3408 | } |
3409 | ||
2be393ed JP |
3410 | static enum ofperr |
3411 | handle_port_desc_stats_request(struct ofconn *ofconn, | |
982697a4 | 3412 | const struct ofp_header *request) |
2be393ed | 3413 | { |
70ae4f93 BP |
3414 | ofp_port_t port_no; |
3415 | enum ofperr error; | |
2be393ed | 3416 | |
70ae4f93 BP |
3417 | error = ofputil_decode_port_desc_stats_request(request, &port_no); |
3418 | if (!error) { | |
3419 | handle_port_request(ofconn, request, port_no, append_port_desc); | |
2be393ed | 3420 | } |
70ae4f93 | 3421 | return error; |
2be393ed JP |
3422 | } |
3423 | ||
98eaac36 JR |
3424 | static uint32_t |
3425 | hash_cookie(ovs_be64 cookie) | |
3426 | { | |
965607c8 | 3427 | return hash_uint64((OVS_FORCE uint64_t)cookie); |
98eaac36 JR |
3428 | } |
3429 | ||
3430 | static void | |
3431 | cookies_insert(struct ofproto *ofproto, struct rule *rule) | |
2c916028 | 3432 | OVS_REQUIRES(ofproto_mutex) |
98eaac36 JR |
3433 | { |
3434 | hindex_insert(&ofproto->cookies, &rule->cookie_node, | |
3435 | hash_cookie(rule->flow_cookie)); | |
3436 | } | |
3437 | ||
3438 | static void | |
3439 | cookies_remove(struct ofproto *ofproto, struct rule *rule) | |
2c916028 | 3440 | OVS_REQUIRES(ofproto_mutex) |
98eaac36 JR |
3441 | { |
3442 | hindex_remove(&ofproto->cookies, &rule->cookie_node); | |
3443 | } | |
3444 | ||
c6ebb8fb | 3445 | static void |
65e0be10 BP |
3446 | calc_duration(long long int start, long long int now, |
3447 | uint32_t *sec, uint32_t *nsec) | |
c6ebb8fb | 3448 | { |
f27f2134 | 3449 | long long int msecs = now - start; |
588cd7b5 BP |
3450 | *sec = msecs / 1000; |
3451 | *nsec = (msecs % 1000) * (1000 * 1000); | |
3452 | } | |
3453 | ||
48266274 | 3454 | /* Checks whether 'table_id' is 0xff or a valid table ID in 'ofproto'. Returns |
554764d1 SH |
3455 | * true if 'table_id' is OK, false otherwise. */ |
3456 | static bool | |
48266274 BP |
3457 | check_table_id(const struct ofproto *ofproto, uint8_t table_id) |
3458 | { | |
554764d1 | 3459 | return table_id == OFPTT_ALL || table_id < ofproto->n_tables; |
48266274 BP |
3460 | } |
3461 | ||
5c67e4af | 3462 | static struct oftable * |
d4ce8a49 | 3463 | next_visible_table(const struct ofproto *ofproto, uint8_t table_id) |
5c67e4af BP |
3464 | { |
3465 | struct oftable *table; | |
3466 | ||
3467 | for (table = &ofproto->tables[table_id]; | |
3468 | table < &ofproto->tables[ofproto->n_tables]; | |
3469 | table++) { | |
3470 | if (!(table->flags & OFTABLE_HIDDEN)) { | |
3471 | return table; | |
3472 | } | |
3473 | } | |
3474 | ||
3475 | return NULL; | |
3476 | } | |
3477 | ||
d0918789 | 3478 | static struct oftable * |
d4ce8a49 | 3479 | first_matching_table(const struct ofproto *ofproto, uint8_t table_id) |
064af421 | 3480 | { |
6c1491fb | 3481 | if (table_id == 0xff) { |
5c67e4af | 3482 | return next_visible_table(ofproto, 0); |
6c1491fb BP |
3483 | } else if (table_id < ofproto->n_tables) { |
3484 | return &ofproto->tables[table_id]; | |
a02e5331 | 3485 | } else { |
6c1491fb | 3486 | return NULL; |
a02e5331 | 3487 | } |
064af421 BP |
3488 | } |
3489 | ||
d0918789 | 3490 | static struct oftable * |
d4ce8a49 BP |
3491 | next_matching_table(const struct ofproto *ofproto, |
3492 | const struct oftable *table, uint8_t table_id) | |
6c1491fb | 3493 | { |
5c67e4af BP |
3494 | return (table_id == 0xff |
3495 | ? next_visible_table(ofproto, (table - ofproto->tables) + 1) | |
6c1491fb BP |
3496 | : NULL); |
3497 | } | |
3498 | ||
d0918789 | 3499 | /* Assigns TABLE to each oftable, in turn, that matches TABLE_ID in OFPROTO: |
6c1491fb BP |
3500 | * |
3501 | * - If TABLE_ID is 0xff, this iterates over every classifier table in | |
5c67e4af | 3502 | * OFPROTO, skipping tables marked OFTABLE_HIDDEN. |
6c1491fb BP |
3503 | * |
3504 | * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates | |
5c67e4af BP |
3505 | * only once, for that table. (This can be used to access tables marked |
3506 | * OFTABLE_HIDDEN.) | |
6c1491fb | 3507 | * |
48266274 BP |
3508 | * - Otherwise, TABLE_ID isn't valid for OFPROTO, so the loop won't be |
3509 | * entered at all. (Perhaps you should have validated TABLE_ID with | |
3510 | * check_table_id().) | |
6c1491fb BP |
3511 | * |
3512 | * All parameters are evaluated multiple times. | |
3513 | */ | |
d0918789 BP |
3514 | #define FOR_EACH_MATCHING_TABLE(TABLE, TABLE_ID, OFPROTO) \ |
3515 | for ((TABLE) = first_matching_table(OFPROTO, TABLE_ID); \ | |
3516 | (TABLE) != NULL; \ | |
3517 | (TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID)) | |
6c1491fb | 3518 | |
a9b22b7f BP |
3519 | /* Initializes 'criteria' in a straightforward way based on the other |
3520 | * parameters. | |
3521 | * | |
dd51dae2 BP |
3522 | * By default, the criteria include flows that are read-only, on the assumption |
3523 | * that the collected flows won't be modified. Call rule_criteria_require_rw() | |
3524 | * if flows will be modified. | |
3525 | * | |
a9b22b7f BP |
3526 | * For "loose" matching, the 'priority' parameter is unimportant and may be |
3527 | * supplied as 0. */ | |
3528 | static void | |
3529 | rule_criteria_init(struct rule_criteria *criteria, uint8_t table_id, | |
eb391b76 | 3530 | const struct match *match, int priority, |
a9b22b7f BP |
3531 | ovs_be64 cookie, ovs_be64 cookie_mask, |
3532 | ofp_port_t out_port, uint32_t out_group) | |
3533 | { | |
3534 | criteria->table_id = table_id; | |
3535 | cls_rule_init(&criteria->cr, match, priority); | |
3536 | criteria->cookie = cookie; | |
3537 | criteria->cookie_mask = cookie_mask; | |
3538 | criteria->out_port = out_port; | |
3539 | criteria->out_group = out_group; | |
dd51dae2 BP |
3540 | |
3541 | /* We ordinarily want to skip hidden rules, but there has to be a way for | |
3542 | * code internal to OVS to modify and delete them, so if the criteria | |
3543 | * specify a priority that can only be for a hidden flow, then allow hidden | |
3544 | * rules to be selected. (This doesn't allow OpenFlow clients to meddle | |
3545 | * with hidden flows because OpenFlow uses only a 16-bit field to specify | |
3546 | * priority.) */ | |
3547 | criteria->include_hidden = priority > UINT16_MAX; | |
3548 | ||
3549 | /* We assume that the criteria are being used to collect flows for reading | |
3550 | * but not modification. Thus, we should collect read-only flows. */ | |
3551 | criteria->include_readonly = true; | |
3552 | } | |
3553 | ||
3554 | /* By default, criteria initialized by rule_criteria_init() will match flows | |
3555 | * that are read-only, on the assumption that the collected flows won't be | |
3556 | * modified. Call this function to match only flows that are be modifiable. | |
3557 | * | |
3558 | * Specify 'can_write_readonly' as false in ordinary circumstances, true if the | |
3559 | * caller has special privileges that allow it to modify even "read-only" | |
3560 | * flows. */ | |
3561 | static void | |
3562 | rule_criteria_require_rw(struct rule_criteria *criteria, | |
3563 | bool can_write_readonly) | |
3564 | { | |
3565 | criteria->include_readonly = can_write_readonly; | |
a9b22b7f BP |
3566 | } |
3567 | ||
3568 | static void | |
3569 | rule_criteria_destroy(struct rule_criteria *criteria) | |
3570 | { | |
3571 | cls_rule_destroy(&criteria->cr); | |
3572 | } | |
3573 | ||
a8e547c1 BP |
3574 | void |
3575 | rule_collection_init(struct rule_collection *rules) | |
3576 | { | |
3577 | rules->rules = rules->stub; | |
3578 | rules->n = 0; | |
3579 | rules->capacity = ARRAY_SIZE(rules->stub); | |
3580 | } | |
3581 | ||
3582 | void | |
3583 | rule_collection_add(struct rule_collection *rules, struct rule *rule) | |
3584 | { | |
3585 | if (rules->n >= rules->capacity) { | |
3586 | size_t old_size, new_size; | |
3587 | ||
3588 | old_size = rules->capacity * sizeof *rules->rules; | |
3589 | rules->capacity *= 2; | |
3590 | new_size = rules->capacity * sizeof *rules->rules; | |
3591 | ||
3592 | if (rules->rules == rules->stub) { | |
3593 | rules->rules = xmalloc(new_size); | |
3594 | memcpy(rules->rules, rules->stub, old_size); | |
3595 | } else { | |
3596 | rules->rules = xrealloc(rules->rules, new_size); | |
3597 | } | |
3598 | } | |
3599 | ||
3600 | rules->rules[rules->n++] = rule; | |
3601 | } | |
3602 | ||
15aaf599 BP |
3603 | void |
3604 | rule_collection_ref(struct rule_collection *rules) | |
3605 | OVS_REQUIRES(ofproto_mutex) | |
3606 | { | |
3607 | size_t i; | |
3608 | ||
3609 | for (i = 0; i < rules->n; i++) { | |
3610 | ofproto_rule_ref(rules->rules[i]); | |
3611 | } | |
3612 | } | |
3613 | ||
3614 | void | |
3615 | rule_collection_unref(struct rule_collection *rules) | |
3616 | { | |
3617 | size_t i; | |
3618 | ||
3619 | for (i = 0; i < rules->n; i++) { | |
3620 | ofproto_rule_unref(rules->rules[i]); | |
3621 | } | |
3622 | } | |
3623 | ||
a8e547c1 BP |
3624 | void |
3625 | rule_collection_destroy(struct rule_collection *rules) | |
3626 | { | |
3627 | if (rules->rules != rules->stub) { | |
3628 | free(rules->rules); | |
3629 | } | |
bfd3dbf6 BP |
3630 | |
3631 | /* Make repeated destruction harmless. */ | |
3632 | rule_collection_init(rules); | |
a8e547c1 BP |
3633 | } |
3634 | ||
dd51dae2 BP |
3635 | /* Checks whether 'rule' matches 'c' and, if so, adds it to 'rules'. This |
3636 | * function verifies most of the criteria in 'c' itself, but the caller must | |
3637 | * check 'c->cr' itself. | |
3638 | * | |
3639 | * Increments '*n_readonly' if 'rule' wasn't added because it's read-only (and | |
b20f4073 BP |
3640 | * 'c' only includes modifiable rules). */ |
3641 | static void | |
a9b22b7f | 3642 | collect_rule(struct rule *rule, const struct rule_criteria *c, |
dd51dae2 | 3643 | struct rule_collection *rules, size_t *n_readonly) |
15aaf599 | 3644 | OVS_REQUIRES(ofproto_mutex) |
6c1d7642 | 3645 | { |
dd51dae2 BP |
3646 | if ((c->table_id == rule->table_id || c->table_id == 0xff) |
3647 | && ofproto_rule_has_out_port(rule, c->out_port) | |
3648 | && ofproto_rule_has_out_group(rule, c->out_group) | |
3649 | && !((rule->flow_cookie ^ c->cookie) & c->cookie_mask) | |
3650 | && (!rule_is_hidden(rule) || c->include_hidden)) { | |
dd51dae2 | 3651 | /* Rule matches all the criteria... */ |
834fe5cb | 3652 | if (!rule_is_readonly(rule) || c->include_readonly) { |
dd51dae2 | 3653 | /* ...add it. */ |
a8e547c1 | 3654 | rule_collection_add(rules, rule); |
dd51dae2 BP |
3655 | } else { |
3656 | /* ...except it's read-only. */ | |
3657 | ++*n_readonly; | |
6c1d7642 | 3658 | } |
6c1d7642 BP |
3659 | } |
3660 | } | |
3661 | ||
a9b22b7f BP |
3662 | /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches |
3663 | * on classifiers rules are done in the "loose" way required for OpenFlow | |
3664 | * OFPFC_MODIFY and OFPFC_DELETE requests. Puts the selected rules on list | |
9ed18e46 BP |
3665 | * 'rules'. |
3666 | * | |
9ed18e46 | 3667 | * Returns 0 on success, otherwise an OpenFlow error code. */ |
90bf1e07 | 3668 | static enum ofperr |
a9b22b7f | 3669 | collect_rules_loose(struct ofproto *ofproto, |
a8e547c1 BP |
3670 | const struct rule_criteria *criteria, |
3671 | struct rule_collection *rules) | |
15aaf599 | 3672 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 3673 | { |
d0918789 | 3674 | struct oftable *table; |
554764d1 | 3675 | enum ofperr error = 0; |
dd51dae2 | 3676 | size_t n_readonly = 0; |
48266274 | 3677 | |
a8e547c1 BP |
3678 | rule_collection_init(rules); |
3679 | ||
554764d1 SH |
3680 | if (!check_table_id(ofproto, criteria->table_id)) { |
3681 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
a8e547c1 | 3682 | goto exit; |
48266274 | 3683 | } |
9ed18e46 | 3684 | |
b8266395 | 3685 | if (criteria->cookie_mask == OVS_BE64_MAX) { |
98eaac36 JR |
3686 | struct rule *rule; |
3687 | ||
a9b22b7f BP |
3688 | HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node, |
3689 | hash_cookie(criteria->cookie), | |
98eaac36 | 3690 | &ofproto->cookies) { |
a9b22b7f | 3691 | if (cls_rule_is_loose_match(&rule->cr, &criteria->cr.match)) { |
b20f4073 | 3692 | collect_rule(rule, criteria, rules, &n_readonly); |
98eaac36 JR |
3693 | } |
3694 | } | |
6c1d7642 | 3695 | } else { |
a9b22b7f | 3696 | FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) { |
6c1d7642 | 3697 | struct rule *rule; |
9ed18e46 | 3698 | |
5f0476ce | 3699 | CLS_FOR_EACH_TARGET (rule, cr, &table->cls, &criteria->cr) { |
b20f4073 | 3700 | collect_rule(rule, criteria, rules, &n_readonly); |
9ed18e46 BP |
3701 | } |
3702 | } | |
3703 | } | |
48d28ac1 | 3704 | |
a8e547c1 | 3705 | exit: |
dd51dae2 BP |
3706 | if (!error && !rules->n && n_readonly) { |
3707 | /* We didn't find any rules to modify. We did find some read-only | |
3708 | * rules that we're not allowed to modify, so report that. */ | |
3709 | error = OFPERR_OFPBRC_EPERM; | |
3710 | } | |
a8e547c1 BP |
3711 | if (error) { |
3712 | rule_collection_destroy(rules); | |
3713 | } | |
48d28ac1 | 3714 | return error; |
9ed18e46 BP |
3715 | } |
3716 | ||
a9b22b7f BP |
3717 | /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches |
3718 | * on classifiers rules are done in the "strict" way required for OpenFlow | |
3719 | * OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests. Puts the selected | |
3720 | * rules on list 'rules'. | |
9ed18e46 | 3721 | * |
9ed18e46 | 3722 | * Returns 0 on success, otherwise an OpenFlow error code. */ |
90bf1e07 | 3723 | static enum ofperr |
a9b22b7f | 3724 | collect_rules_strict(struct ofproto *ofproto, |
a8e547c1 BP |
3725 | const struct rule_criteria *criteria, |
3726 | struct rule_collection *rules) | |
15aaf599 | 3727 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 3728 | { |
d0918789 | 3729 | struct oftable *table; |
dd51dae2 | 3730 | size_t n_readonly = 0; |
554764d1 | 3731 | int error = 0; |
48266274 | 3732 | |
a8e547c1 BP |
3733 | rule_collection_init(rules); |
3734 | ||
554764d1 SH |
3735 | if (!check_table_id(ofproto, criteria->table_id)) { |
3736 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
a8e547c1 | 3737 | goto exit; |
48266274 | 3738 | } |
9ed18e46 | 3739 | |
b8266395 | 3740 | if (criteria->cookie_mask == OVS_BE64_MAX) { |
98eaac36 JR |
3741 | struct rule *rule; |
3742 | ||
a9b22b7f BP |
3743 | HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node, |
3744 | hash_cookie(criteria->cookie), | |
98eaac36 | 3745 | &ofproto->cookies) { |
a9b22b7f | 3746 | if (cls_rule_equal(&rule->cr, &criteria->cr)) { |
b20f4073 | 3747 | collect_rule(rule, criteria, rules, &n_readonly); |
98eaac36 JR |
3748 | } |
3749 | } | |
6c1d7642 | 3750 | } else { |
a9b22b7f | 3751 | FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) { |
6c1d7642 | 3752 | struct rule *rule; |
9ed18e46 | 3753 | |
a9b22b7f BP |
3754 | rule = rule_from_cls_rule(classifier_find_rule_exactly( |
3755 | &table->cls, &criteria->cr)); | |
6c1d7642 | 3756 | if (rule) { |
b20f4073 | 3757 | collect_rule(rule, criteria, rules, &n_readonly); |
9ed18e46 BP |
3758 | } |
3759 | } | |
3760 | } | |
48d28ac1 | 3761 | |
a8e547c1 | 3762 | exit: |
b20f4073 BP |
3763 | if (!error && !rules->n && n_readonly) { |
3764 | /* We didn't find any rules to modify. We did find some read-only | |
3765 | * rules that we're not allowed to modify, so report that. */ | |
3766 | error = OFPERR_OFPBRC_EPERM; | |
3767 | } | |
a8e547c1 BP |
3768 | if (error) { |
3769 | rule_collection_destroy(rules); | |
3770 | } | |
6c1d7642 | 3771 | return error; |
9ed18e46 BP |
3772 | } |
3773 | ||
f27f2134 BP |
3774 | /* Returns 'age_ms' (a duration in milliseconds), converted to seconds and |
3775 | * forced into the range of a uint16_t. */ | |
3776 | static int | |
3777 | age_secs(long long int age_ms) | |
3778 | { | |
3779 | return (age_ms < 0 ? 0 | |
3780 | : age_ms >= UINT16_MAX * 1000 ? UINT16_MAX | |
3781 | : (unsigned int) age_ms / 1000); | |
3782 | } | |
3783 | ||
90bf1e07 | 3784 | static enum ofperr |
63f2140a | 3785 | handle_flow_stats_request(struct ofconn *ofconn, |
982697a4 | 3786 | const struct ofp_header *request) |
15aaf599 | 3787 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 3788 | { |
64ff1d96 | 3789 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 3790 | struct ofputil_flow_stats_request fsr; |
a9b22b7f | 3791 | struct rule_criteria criteria; |
a8e547c1 | 3792 | struct rule_collection rules; |
63f2140a | 3793 | struct list replies; |
90bf1e07 | 3794 | enum ofperr error; |
a8e547c1 | 3795 | size_t i; |
09246b99 | 3796 | |
982697a4 | 3797 | error = ofputil_decode_flow_stats_request(&fsr, request); |
09246b99 BP |
3798 | if (error) { |
3799 | return error; | |
3800 | } | |
3801 | ||
a9b22b7f BP |
3802 | rule_criteria_init(&criteria, fsr.table_id, &fsr.match, 0, fsr.cookie, |
3803 | fsr.cookie_mask, fsr.out_port, fsr.out_group); | |
15aaf599 BP |
3804 | |
3805 | ovs_mutex_lock(&ofproto_mutex); | |
a9b22b7f BP |
3806 | error = collect_rules_loose(ofproto, &criteria, &rules); |
3807 | rule_criteria_destroy(&criteria); | |
15aaf599 BP |
3808 | if (!error) { |
3809 | rule_collection_ref(&rules); | |
3810 | } | |
3811 | ovs_mutex_unlock(&ofproto_mutex); | |
3812 | ||
9ed18e46 BP |
3813 | if (error) { |
3814 | return error; | |
3815 | } | |
5ecc9d81 | 3816 | |
982697a4 | 3817 | ofpmp_init(&replies, request); |
a8e547c1 BP |
3818 | for (i = 0; i < rules.n; i++) { |
3819 | struct rule *rule = rules.rules[i]; | |
f27f2134 | 3820 | long long int now = time_msec(); |
9ed18e46 | 3821 | struct ofputil_flow_stats fs; |
15aaf599 | 3822 | long long int created, used, modified; |
dc723c44 | 3823 | const struct rule_actions *actions; |
15aaf599 | 3824 | enum ofputil_flow_mod_flags flags; |
a3779dbc | 3825 | |
d10976b7 | 3826 | ovs_mutex_lock(&rule->mutex); |
15aaf599 | 3827 | fs.cookie = rule->flow_cookie; |
a3779dbc EJ |
3828 | fs.idle_timeout = rule->idle_timeout; |
3829 | fs.hard_timeout = rule->hard_timeout; | |
ca26eb44 | 3830 | fs.importance = rule->importance; |
15aaf599 | 3831 | created = rule->created; |
15aaf599 | 3832 | modified = rule->modified; |
06a0f3e2 | 3833 | actions = rule_get_actions(rule); |
15aaf599 | 3834 | flags = rule->flags; |
d10976b7 | 3835 | ovs_mutex_unlock(&rule->mutex); |
a3779dbc | 3836 | |
dc437090 JR |
3837 | ofproto->ofproto_class->rule_get_stats(rule, &fs.packet_count, |
3838 | &fs.byte_count, &used); | |
3839 | ||
15aaf599 BP |
3840 | minimatch_expand(&rule->cr.match, &fs.match); |
3841 | fs.table_id = rule->table_id; | |
3842 | calc_duration(created, now, &fs.duration_sec, &fs.duration_nsec); | |
3843 | fs.priority = rule->cr.priority; | |
3844 | fs.idle_age = age_secs(now - used); | |
3845 | fs.hard_age = age_secs(now - modified); | |
15aaf599 BP |
3846 | fs.ofpacts = actions->ofpacts; |
3847 | fs.ofpacts_len = actions->ofpacts_len; | |
3f517bcd | 3848 | |
15aaf599 | 3849 | fs.flags = flags; |
9ed18e46 | 3850 | ofputil_append_flow_stats_reply(&fs, &replies); |
3c4486a5 | 3851 | } |
15aaf599 BP |
3852 | |
3853 | rule_collection_unref(&rules); | |
a8e547c1 BP |
3854 | rule_collection_destroy(&rules); |
3855 | ||
63f2140a | 3856 | ofconn_send_replies(ofconn, &replies); |
5ecc9d81 | 3857 | |
09246b99 BP |
3858 | return 0; |
3859 | } | |
3860 | ||
4f2cad2c | 3861 | static void |
3394b5b6 | 3862 | flow_stats_ds(struct rule *rule, struct ds *results) |
4f2cad2c | 3863 | { |
4f2cad2c | 3864 | uint64_t packet_count, byte_count; |
dc723c44 | 3865 | const struct rule_actions *actions; |
dc437090 | 3866 | long long int created, used; |
4f2cad2c | 3867 | |
dc437090 JR |
3868 | rule->ofproto->ofproto_class->rule_get_stats(rule, &packet_count, |
3869 | &byte_count, &used); | |
4f2cad2c | 3870 | |
15aaf599 | 3871 | ovs_mutex_lock(&rule->mutex); |
06a0f3e2 | 3872 | actions = rule_get_actions(rule); |
15aaf599 BP |
3873 | created = rule->created; |
3874 | ovs_mutex_unlock(&rule->mutex); | |
3875 | ||
6c1491fb BP |
3876 | if (rule->table_id != 0) { |
3877 | ds_put_format(results, "table_id=%"PRIu8", ", rule->table_id); | |
3878 | } | |
15aaf599 | 3879 | ds_put_format(results, "duration=%llds, ", (time_msec() - created) / 1000); |
4f2cad2c JP |
3880 | ds_put_format(results, "n_packets=%"PRIu64", ", packet_count); |
3881 | ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count); | |
cb833cf6 | 3882 | cls_rule_format(&rule->cr, results); |
a5df0e72 | 3883 | ds_put_char(results, ','); |
15aaf599 | 3884 | |
455ecd77 | 3885 | ds_put_cstr(results, "actions="); |
15aaf599 BP |
3886 | ofpacts_format(actions->ofpacts, actions->ofpacts_len, results); |
3887 | ||
4f2cad2c JP |
3888 | ds_put_cstr(results, "\n"); |
3889 | } | |
3890 | ||
d295e8e9 | 3891 | /* Adds a pretty-printed description of all flows to 'results', including |
ee8b231c | 3892 | * hidden flows (e.g., set up by in-band control). */ |
4f2cad2c JP |
3893 | void |
3894 | ofproto_get_all_flows(struct ofproto *p, struct ds *results) | |
3895 | { | |
d0918789 | 3896 | struct oftable *table; |
6c1491fb | 3897 | |
d0918789 | 3898 | OFPROTO_FOR_EACH_TABLE (table, p) { |
6c1491fb | 3899 | struct rule *rule; |
064af421 | 3900 | |
5f0476ce | 3901 | CLS_FOR_EACH (rule, cr, &table->cls) { |
6c1491fb BP |
3902 | flow_stats_ds(rule, results); |
3903 | } | |
064af421 | 3904 | } |
064af421 BP |
3905 | } |
3906 | ||
b5827b24 BP |
3907 | /* Obtains the NetFlow engine type and engine ID for 'ofproto' into |
3908 | * '*engine_type' and '*engine_id', respectively. */ | |
3909 | void | |
3910 | ofproto_get_netflow_ids(const struct ofproto *ofproto, | |
3911 | uint8_t *engine_type, uint8_t *engine_id) | |
3912 | { | |
abe529af | 3913 | ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id); |
b5827b24 BP |
3914 | } |
3915 | ||
8f5514fe AW |
3916 | /* Checks the status change of CFM on 'ofport'. |
3917 | * | |
3918 | * Returns true if 'ofproto_class' does not support 'cfm_status_changed'. */ | |
3919 | bool | |
3920 | ofproto_port_cfm_status_changed(struct ofproto *ofproto, ofp_port_t ofp_port) | |
3921 | { | |
3922 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
3923 | return (ofport && ofproto->ofproto_class->cfm_status_changed | |
3924 | ? ofproto->ofproto_class->cfm_status_changed(ofport) | |
3925 | : true); | |
3926 | } | |
3927 | ||
88bf179a AW |
3928 | /* Checks the status of CFM configured on 'ofp_port' within 'ofproto'. |
3929 | * Returns 0 if the port's CFM status was successfully stored into | |
3930 | * '*status'. Returns positive errno if the port did not have CFM | |
8f5514fe | 3931 | * configured. |
9a9e3786 | 3932 | * |
88bf179a AW |
3933 | * The caller must provide and own '*status', and must free 'status->rmps'. |
3934 | * '*status' is indeterminate if the return value is non-zero. */ | |
3935 | int | |
4e022ec0 | 3936 | ofproto_port_get_cfm_status(const struct ofproto *ofproto, ofp_port_t ofp_port, |
685acfd9 | 3937 | struct cfm_status *status) |
3967a833 MM |
3938 | { |
3939 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
88bf179a AW |
3940 | return (ofport && ofproto->ofproto_class->get_cfm_status |
3941 | ? ofproto->ofproto_class->get_cfm_status(ofport, status) | |
3942 | : EOPNOTSUPP); | |
3967a833 MM |
3943 | } |
3944 | ||
90bf1e07 | 3945 | static enum ofperr |
76c93b22 | 3946 | handle_aggregate_stats_request(struct ofconn *ofconn, |
982697a4 | 3947 | const struct ofp_header *oh) |
15aaf599 | 3948 | OVS_EXCLUDED(ofproto_mutex) |
27d34fce | 3949 | { |
76c93b22 | 3950 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 3951 | struct ofputil_flow_stats_request request; |
76c93b22 | 3952 | struct ofputil_aggregate_stats stats; |
5e9d0469 | 3953 | bool unknown_packets, unknown_bytes; |
a9b22b7f | 3954 | struct rule_criteria criteria; |
a8e547c1 | 3955 | struct rule_collection rules; |
76c93b22 | 3956 | struct ofpbuf *reply; |
90bf1e07 | 3957 | enum ofperr error; |
a8e547c1 | 3958 | size_t i; |
27d34fce | 3959 | |
982697a4 | 3960 | error = ofputil_decode_flow_stats_request(&request, oh); |
76c93b22 BP |
3961 | if (error) { |
3962 | return error; | |
3963 | } | |
5ecc9d81 | 3964 | |
a9b22b7f BP |
3965 | rule_criteria_init(&criteria, request.table_id, &request.match, 0, |
3966 | request.cookie, request.cookie_mask, | |
3967 | request.out_port, request.out_group); | |
15aaf599 BP |
3968 | |
3969 | ovs_mutex_lock(&ofproto_mutex); | |
a9b22b7f BP |
3970 | error = collect_rules_loose(ofproto, &criteria, &rules); |
3971 | rule_criteria_destroy(&criteria); | |
15aaf599 BP |
3972 | if (!error) { |
3973 | rule_collection_ref(&rules); | |
3974 | } | |
3975 | ovs_mutex_unlock(&ofproto_mutex); | |
3976 | ||
9ed18e46 BP |
3977 | if (error) { |
3978 | return error; | |
3979 | } | |
3c4486a5 | 3980 | |
9ed18e46 | 3981 | memset(&stats, 0, sizeof stats); |
5e9d0469 | 3982 | unknown_packets = unknown_bytes = false; |
a8e547c1 BP |
3983 | for (i = 0; i < rules.n; i++) { |
3984 | struct rule *rule = rules.rules[i]; | |
9ed18e46 BP |
3985 | uint64_t packet_count; |
3986 | uint64_t byte_count; | |
dc437090 | 3987 | long long int used; |
5ecc9d81 | 3988 | |
9ed18e46 | 3989 | ofproto->ofproto_class->rule_get_stats(rule, &packet_count, |
dc437090 | 3990 | &byte_count, &used); |
5ecc9d81 | 3991 | |
5e9d0469 BP |
3992 | if (packet_count == UINT64_MAX) { |
3993 | unknown_packets = true; | |
3994 | } else { | |
3995 | stats.packet_count += packet_count; | |
3996 | } | |
3997 | ||
3998 | if (byte_count == UINT64_MAX) { | |
3999 | unknown_bytes = true; | |
4000 | } else { | |
4001 | stats.byte_count += byte_count; | |
4002 | } | |
4003 | ||
9ed18e46 | 4004 | stats.flow_count++; |
3c4486a5 | 4005 | } |
5e9d0469 BP |
4006 | if (unknown_packets) { |
4007 | stats.packet_count = UINT64_MAX; | |
4008 | } | |
4009 | if (unknown_bytes) { | |
4010 | stats.byte_count = UINT64_MAX; | |
4011 | } | |
27d34fce | 4012 | |
15aaf599 | 4013 | rule_collection_unref(&rules); |
a8e547c1 BP |
4014 | rule_collection_destroy(&rules); |
4015 | ||
982697a4 | 4016 | reply = ofputil_encode_aggregate_stats_reply(&stats, oh); |
76c93b22 | 4017 | ofconn_send_reply(ofconn, reply); |
09246b99 BP |
4018 | |
4019 | return 0; | |
4020 | } | |
4021 | ||
c1c9c9c4 | 4022 | struct queue_stats_cbdata { |
ca0f572c | 4023 | struct ofport *ofport; |
63f2140a | 4024 | struct list replies; |
6dc34a0d | 4025 | long long int now; |
c1c9c9c4 BP |
4026 | }; |
4027 | ||
4028 | static void | |
db9220c3 | 4029 | put_queue_stats(struct queue_stats_cbdata *cbdata, uint32_t queue_id, |
c1c9c9c4 BP |
4030 | const struct netdev_queue_stats *stats) |
4031 | { | |
6dc34a0d | 4032 | struct ofputil_queue_stats oqs; |
c1c9c9c4 | 4033 | |
6dc34a0d BP |
4034 | oqs.port_no = cbdata->ofport->pp.port_no; |
4035 | oqs.queue_id = queue_id; | |
4036 | oqs.tx_bytes = stats->tx_bytes; | |
4037 | oqs.tx_packets = stats->tx_packets; | |
4038 | oqs.tx_errors = stats->tx_errors; | |
4039 | if (stats->created != LLONG_MIN) { | |
4040 | calc_duration(stats->created, cbdata->now, | |
4041 | &oqs.duration_sec, &oqs.duration_nsec); | |
4042 | } else { | |
4043 | oqs.duration_sec = oqs.duration_nsec = UINT32_MAX; | |
4044 | } | |
64626975 | 4045 | ofputil_append_queue_stat(&cbdata->replies, &oqs); |
c1c9c9c4 BP |
4046 | } |
4047 | ||
4048 | static void | |
db9220c3 | 4049 | handle_queue_stats_dump_cb(uint32_t queue_id, |
c1c9c9c4 BP |
4050 | struct netdev_queue_stats *stats, |
4051 | void *cbdata_) | |
4052 | { | |
4053 | struct queue_stats_cbdata *cbdata = cbdata_; | |
4054 | ||
4055 | put_queue_stats(cbdata, queue_id, stats); | |
4056 | } | |
4057 | ||
0414d158 | 4058 | static enum ofperr |
ca0f572c | 4059 | handle_queue_stats_for_port(struct ofport *port, uint32_t queue_id, |
c1c9c9c4 BP |
4060 | struct queue_stats_cbdata *cbdata) |
4061 | { | |
ca0f572c | 4062 | cbdata->ofport = port; |
c1c9c9c4 BP |
4063 | if (queue_id == OFPQ_ALL) { |
4064 | netdev_dump_queue_stats(port->netdev, | |
4065 | handle_queue_stats_dump_cb, cbdata); | |
4066 | } else { | |
4067 | struct netdev_queue_stats stats; | |
4068 | ||
1ac788f6 BP |
4069 | if (!netdev_get_queue_stats(port->netdev, queue_id, &stats)) { |
4070 | put_queue_stats(cbdata, queue_id, &stats); | |
0414d158 BP |
4071 | } else { |
4072 | return OFPERR_OFPQOFC_BAD_QUEUE; | |
1ac788f6 | 4073 | } |
c1c9c9c4 | 4074 | } |
0414d158 | 4075 | return 0; |
c1c9c9c4 BP |
4076 | } |
4077 | ||
90bf1e07 | 4078 | static enum ofperr |
63f2140a | 4079 | handle_queue_stats_request(struct ofconn *ofconn, |
982697a4 | 4080 | const struct ofp_header *rq) |
c1c9c9c4 | 4081 | { |
64ff1d96 | 4082 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
c1c9c9c4 | 4083 | struct queue_stats_cbdata cbdata; |
0414d158 | 4084 | struct ofport *port; |
0414d158 | 4085 | enum ofperr error; |
64626975 | 4086 | struct ofputil_queue_stats_request oqsr; |
c1c9c9c4 | 4087 | |
c1c9c9c4 BP |
4088 | COVERAGE_INC(ofproto_queue_req); |
4089 | ||
982697a4 | 4090 | ofpmp_init(&cbdata.replies, rq); |
6dc34a0d | 4091 | cbdata.now = time_msec(); |
c1c9c9c4 | 4092 | |
64626975 SH |
4093 | error = ofputil_decode_queue_stats_request(rq, &oqsr); |
4094 | if (error) { | |
4095 | return error; | |
4096 | } | |
4097 | ||
7f05e7ab | 4098 | if (oqsr.port_no == OFPP_ANY) { |
0414d158 | 4099 | error = OFPERR_OFPQOFC_BAD_QUEUE; |
4e8e4213 | 4100 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
64626975 | 4101 | if (!handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata)) { |
0414d158 BP |
4102 | error = 0; |
4103 | } | |
c1c9c9c4 | 4104 | } |
0414d158 | 4105 | } else { |
64626975 | 4106 | port = ofproto_get_port(ofproto, oqsr.port_no); |
0414d158 | 4107 | error = (port |
64626975 | 4108 | ? handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata) |
0414d158 BP |
4109 | : OFPERR_OFPQOFC_BAD_PORT); |
4110 | } | |
4111 | if (!error) { | |
4112 | ofconn_send_replies(ofconn, &cbdata.replies); | |
c1c9c9c4 | 4113 | } else { |
63f2140a | 4114 | ofpbuf_list_delete(&cbdata.replies); |
c1c9c9c4 | 4115 | } |
c1c9c9c4 | 4116 | |
0414d158 | 4117 | return error; |
c1c9c9c4 | 4118 | } |
7ee20df1 | 4119 | |
2e31a9b8 BP |
4120 | static bool |
4121 | should_evict_a_rule(struct oftable *table, unsigned int extra_space) | |
15aaf599 BP |
4122 | OVS_REQUIRES(ofproto_mutex) |
4123 | OVS_NO_THREAD_SAFETY_ANALYSIS | |
8037acb4 | 4124 | { |
15aaf599 | 4125 | return classifier_count(&table->cls) + extra_space > table->max_flows; |
2e31a9b8 | 4126 | } |
8037acb4 | 4127 | |
2e31a9b8 | 4128 | static enum ofperr |
834fe5cb | 4129 | evict_rules_from_table(struct oftable *table, unsigned int extra_space) |
15aaf599 | 4130 | OVS_REQUIRES(ofproto_mutex) |
2e31a9b8 BP |
4131 | { |
4132 | while (should_evict_a_rule(table, extra_space)) { | |
4133 | struct rule *rule; | |
8037acb4 | 4134 | |
2e31a9b8 BP |
4135 | if (!choose_rule_to_evict(table, &rule)) { |
4136 | return OFPERR_OFPFMFC_TABLE_FULL; | |
2e31a9b8 | 4137 | } else { |
834fe5cb | 4138 | ofproto_rule_delete__(rule, OFPRR_EVICTION); |
2e31a9b8 | 4139 | } |
8037acb4 | 4140 | } |
2e31a9b8 BP |
4141 | |
4142 | return 0; | |
8037acb4 BP |
4143 | } |
4144 | ||
79eee1eb BP |
4145 | /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT |
4146 | * in which no matching flow already exists in the flow table. | |
4147 | * | |
4148 | * Adds the flow specified by 'ofm', which is followed by 'n_actions' | |
75a75043 | 4149 | * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow |
90bf1e07 BP |
4150 | * error code on failure, or OFPROTO_POSTPONE if the operation cannot be |
4151 | * initiated now but may be retried later. | |
79eee1eb | 4152 | * |
2509616e | 4153 | * The caller retains ownership of 'fm->ofpacts'. |
f25d0cf3 | 4154 | * |
79eee1eb BP |
4155 | * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id, |
4156 | * if any. */ | |
90bf1e07 | 4157 | static enum ofperr |
baae3d02 BP |
4158 | add_flow(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4159 | const struct flow_mod_requester *req) | |
15aaf599 | 4160 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 4161 | { |
062fea06 | 4162 | const struct rule_actions *actions; |
d0918789 | 4163 | struct oftable *table; |
8037acb4 | 4164 | struct cls_rule cr; |
064af421 | 4165 | struct rule *rule; |
5a361239 | 4166 | uint8_t table_id; |
554764d1 | 4167 | int error = 0; |
064af421 | 4168 | |
554764d1 SH |
4169 | if (!check_table_id(ofproto, fm->table_id)) { |
4170 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
48266274 BP |
4171 | return error; |
4172 | } | |
4173 | ||
7ee20df1 BP |
4174 | /* Pick table. */ |
4175 | if (fm->table_id == 0xff) { | |
13521ff5 | 4176 | if (ofproto->ofproto_class->rule_choose_table) { |
81a76618 BP |
4177 | error = ofproto->ofproto_class->rule_choose_table(ofproto, |
4178 | &fm->match, | |
7ee20df1 BP |
4179 | &table_id); |
4180 | if (error) { | |
4181 | return error; | |
4182 | } | |
cb22974d | 4183 | ovs_assert(table_id < ofproto->n_tables); |
7ee20df1 | 4184 | } else { |
5a361239 | 4185 | table_id = 0; |
7ee20df1 BP |
4186 | } |
4187 | } else if (fm->table_id < ofproto->n_tables) { | |
5a361239 | 4188 | table_id = fm->table_id; |
7ee20df1 | 4189 | } else { |
c22c56bd | 4190 | return OFPERR_OFPBRC_BAD_TABLE_ID; |
064af421 BP |
4191 | } |
4192 | ||
5a361239 | 4193 | table = &ofproto->tables[table_id]; |
834fe5cb BP |
4194 | if (table->flags & OFTABLE_READONLY |
4195 | && !(fm->flags & OFPUTIL_FF_NO_READONLY)) { | |
5c67e4af BP |
4196 | return OFPERR_OFPBRC_EPERM; |
4197 | } | |
4198 | ||
adcf00ba AZ |
4199 | if (!(fm->flags & OFPUTIL_FF_HIDDEN_FIELDS)) { |
4200 | if (!match_has_default_hidden_fields(&fm->match)) { | |
4201 | VLOG_WARN_RL(&rl, "%s: (add_flow) only internal flows can set " | |
4202 | "non-default values to hidden fields", ofproto->name); | |
4203 | return OFPERR_OFPBRC_EPERM; | |
4204 | } | |
4205 | } | |
4206 | ||
8037acb4 BP |
4207 | cls_rule_init(&cr, &fm->match, fm->priority); |
4208 | ||
b277c7cc | 4209 | /* Transform "add" into "modify" if there's an existing identical flow. */ |
8037acb4 | 4210 | rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls, &cr)); |
b277c7cc | 4211 | if (rule) { |
834fe5cb BP |
4212 | struct rule_collection rules; |
4213 | ||
8037acb4 | 4214 | cls_rule_destroy(&cr); |
b277c7cc | 4215 | |
834fe5cb BP |
4216 | rule_collection_init(&rules); |
4217 | rule_collection_add(&rules, rule); | |
4218 | fm->modify_cookie = true; | |
4219 | error = modify_flows__(ofproto, fm, &rules, req); | |
4220 | rule_collection_destroy(&rules); | |
a8e547c1 | 4221 | |
834fe5cb | 4222 | return error; |
b277c7cc BP |
4223 | } |
4224 | ||
81a76618 | 4225 | /* Check for overlap, if requested. */ |
0fb88c18 | 4226 | if (fm->flags & OFPUTIL_FF_CHECK_OVERLAP) { |
afae68b1 | 4227 | if (classifier_rule_overlaps(&table->cls, &cr)) { |
8037acb4 | 4228 | cls_rule_destroy(&cr); |
c09f755d BP |
4229 | return OFPERR_OFPFMFC_OVERLAP; |
4230 | } | |
7ee20df1 | 4231 | } |
81a76618 | 4232 | |
8037acb4 | 4233 | /* If necessary, evict an existing rule to clear out space. */ |
834fe5cb | 4234 | error = evict_rules_from_table(table, 1); |
8037acb4 BP |
4235 | if (error) { |
4236 | cls_rule_destroy(&cr); | |
4237 | return error; | |
4238 | } | |
2e1ae200 | 4239 | |
8037acb4 BP |
4240 | /* Allocate new rule. */ |
4241 | rule = ofproto->ofproto_class->rule_alloc(); | |
4242 | if (!rule) { | |
4243 | cls_rule_destroy(&cr); | |
4244 | VLOG_WARN_RL(&rl, "%s: failed to create rule (%s)", | |
4245 | ofproto->name, ovs_strerror(error)); | |
4246 | return ENOMEM; | |
4247 | } | |
4248 | ||
4249 | /* Initialize base state. */ | |
49a0e0eb BP |
4250 | *CONST_CAST(struct ofproto **, &rule->ofproto) = ofproto; |
4251 | cls_rule_move(CONST_CAST(struct cls_rule *, &rule->cr), &cr); | |
37bec3d3 | 4252 | ovs_refcount_init(&rule->ref_count); |
623e1caf | 4253 | rule->flow_cookie = fm->new_cookie; |
dc437090 | 4254 | rule->created = rule->modified = time_msec(); |
a3779dbc | 4255 | |
d10976b7 BP |
4256 | ovs_mutex_init(&rule->mutex); |
4257 | ovs_mutex_lock(&rule->mutex); | |
7ee20df1 BP |
4258 | rule->idle_timeout = fm->idle_timeout; |
4259 | rule->hard_timeout = fm->hard_timeout; | |
ca26eb44 | 4260 | rule->importance = fm->importance; |
d10976b7 | 4261 | ovs_mutex_unlock(&rule->mutex); |
a3779dbc | 4262 | |
49a0e0eb | 4263 | *CONST_CAST(uint8_t *, &rule->table_id) = table - ofproto->tables; |
3f517bcd | 4264 | rule->flags = fm->flags & OFPUTIL_FF_STATE; |
4c7562c5 | 4265 | actions = rule_actions_create(fm->ofpacts, fm->ofpacts_len); |
062fea06 | 4266 | ovsrcu_set(&rule->actions, actions); |
9cae45dc | 4267 | list_init(&rule->meter_list_node); |
254750ce | 4268 | rule->eviction_group = NULL; |
e503cc19 | 4269 | list_init(&rule->expirable); |
2b07c8b1 BP |
4270 | rule->monitor_flags = 0; |
4271 | rule->add_seqno = 0; | |
4272 | rule->modify_seqno = 0; | |
7ee20df1 | 4273 | |
8037acb4 | 4274 | /* Construct rule, initializing derived state. */ |
b277c7cc BP |
4275 | error = ofproto->ofproto_class->rule_construct(rule); |
4276 | if (error) { | |
8037acb4 BP |
4277 | ofproto_rule_destroy__(rule); |
4278 | return error; | |
064af421 | 4279 | } |
8037acb4 | 4280 | |
062fea06 BP |
4281 | if (fm->hard_timeout || fm->idle_timeout) { |
4282 | list_insert(&ofproto->expirable, &rule->expirable); | |
4283 | } | |
4284 | cookies_insert(ofproto, rule); | |
4285 | eviction_group_add_rule(rule); | |
4c7562c5 | 4286 | if (actions->has_meter) { |
062fea06 BP |
4287 | meter_insert_rule(rule); |
4288 | } | |
1ebeaaa7 | 4289 | |
062fea06 | 4290 | classifier_insert(&table->cls, CONST_CAST(struct cls_rule *, &rule->cr)); |
8037acb4 | 4291 | |
b20f4073 | 4292 | error = ofproto->ofproto_class->rule_insert(rule); |
834fe5cb BP |
4293 | if (error) { |
4294 | oftable_remove_rule(rule); | |
4295 | ofproto_rule_unref(rule); | |
4296 | return error; | |
4297 | } | |
35f48b8b | 4298 | learned_cookies_inc(ofproto, actions); |
062fea06 | 4299 | |
834fe5cb BP |
4300 | if (minimask_get_vid_mask(&rule->cr.match.mask) == VLAN_VID_MASK) { |
4301 | if (ofproto->vlan_bitmap) { | |
4302 | uint16_t vid = miniflow_get_vid(&rule->cr.match.flow); | |
4303 | if (!bitmap_is_set(ofproto->vlan_bitmap, vid)) { | |
4304 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
4305 | ofproto->vlans_changed = true; | |
4306 | } | |
4307 | } else { | |
4308 | ofproto->vlans_changed = true; | |
4309 | } | |
4310 | } | |
4311 | ||
4312 | ofmonitor_report(ofproto->connmgr, rule, NXFME_ADDED, 0, | |
cdbdeeda | 4313 | req ? req->ofconn : NULL, req ? req->xid : 0, NULL); |
834fe5cb BP |
4314 | |
4315 | return req ? send_buffered_packet(req->ofconn, fm->buffer_id, rule) : 0; | |
064af421 | 4316 | } |
79eee1eb BP |
4317 | \f |
4318 | /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */ | |
064af421 | 4319 | |
9ed18e46 BP |
4320 | /* Modifies the rules listed in 'rules', changing their actions to match those |
4321 | * in 'fm'. | |
79eee1eb | 4322 | * |
9ed18e46 BP |
4323 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, |
4324 | * if any. | |
4325 | * | |
4326 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 4327 | static enum ofperr |
baae3d02 BP |
4328 | modify_flows__(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4329 | const struct rule_collection *rules, | |
4330 | const struct flow_mod_requester *req) | |
15aaf599 | 4331 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4332 | { |
35f48b8b | 4333 | struct list dead_cookies = LIST_INITIALIZER(&dead_cookies); |
834fe5cb | 4334 | enum nx_flow_update_event event; |
a8e547c1 | 4335 | size_t i; |
79eee1eb | 4336 | |
af822017 BP |
4337 | if (ofproto->ofproto_class->rule_premodify_actions) { |
4338 | for (i = 0; i < rules->n; i++) { | |
4339 | struct rule *rule = rules->rules[i]; | |
cb220b39 | 4340 | enum ofperr error; |
af822017 | 4341 | |
dd51dae2 BP |
4342 | error = ofproto->ofproto_class->rule_premodify_actions( |
4343 | rule, fm->ofpacts, fm->ofpacts_len); | |
4344 | if (error) { | |
4345 | return error; | |
af822017 BP |
4346 | } |
4347 | } | |
4348 | } | |
4349 | ||
834fe5cb | 4350 | event = fm->command == OFPFC_ADD ? NXFME_ADDED : NXFME_MODIFIED; |
a8e547c1 BP |
4351 | for (i = 0; i < rules->n; i++) { |
4352 | struct rule *rule = rules->rules[i]; | |
08043761 | 4353 | |
834fe5cb BP |
4354 | /* 'fm' says that */ |
4355 | bool change_cookie = (fm->modify_cookie | |
4356 | && fm->new_cookie != OVS_BE64_MAX | |
4357 | && fm->new_cookie != rule->flow_cookie); | |
2e1ae200 | 4358 | |
834fe5cb BP |
4359 | const struct rule_actions *actions = rule_get_actions(rule); |
4360 | bool change_actions = !ofpacts_equal(fm->ofpacts, fm->ofpacts_len, | |
4361 | actions->ofpacts, | |
4362 | actions->ofpacts_len); | |
5c67e4af | 4363 | |
834fe5cb | 4364 | bool reset_counters = (fm->flags & OFPUTIL_FF_RESET_COUNTS) != 0; |
a7d94793 | 4365 | |
834fe5cb BP |
4366 | long long int now = time_msec(); |
4367 | ||
834fe5cb BP |
4368 | if (change_cookie) { |
4369 | cookies_remove(ofproto, rule); | |
98eaac36 | 4370 | } |
834fe5cb BP |
4371 | |
4372 | ovs_mutex_lock(&rule->mutex); | |
4373 | if (fm->command == OFPFC_ADD) { | |
b277c7cc BP |
4374 | rule->idle_timeout = fm->idle_timeout; |
4375 | rule->hard_timeout = fm->hard_timeout; | |
ca26eb44 | 4376 | rule->importance = fm->importance; |
3f517bcd | 4377 | rule->flags = fm->flags & OFPUTIL_FF_STATE; |
834fe5cb BP |
4378 | rule->created = now; |
4379 | } | |
4380 | if (change_cookie) { | |
4381 | rule->flow_cookie = fm->new_cookie; | |
4382 | } | |
4383 | rule->modified = now; | |
4384 | ovs_mutex_unlock(&rule->mutex); | |
4385 | ||
4386 | if (change_cookie) { | |
4387 | cookies_insert(ofproto, rule); | |
4388 | } | |
4389 | if (fm->command == OFPFC_ADD) { | |
ca26eb44 | 4390 | if (fm->idle_timeout || fm->hard_timeout || fm->importance) { |
b277c7cc BP |
4391 | if (!rule->eviction_group) { |
4392 | eviction_group_add_rule(rule); | |
4393 | } | |
4394 | } else { | |
4395 | eviction_group_remove_rule(rule); | |
4396 | } | |
4397 | } | |
4398 | ||
834fe5cb | 4399 | if (change_actions) { |
4c7562c5 | 4400 | ovsrcu_set(&rule->actions, rule_actions_create(fm->ofpacts, |
834fe5cb | 4401 | fm->ofpacts_len)); |
834fe5cb | 4402 | } |
884e1dc4 | 4403 | |
834fe5cb | 4404 | if (change_actions || reset_counters) { |
af822017 | 4405 | ofproto->ofproto_class->rule_modify_actions(rule, reset_counters); |
623e1caf | 4406 | } |
834fe5cb BP |
4407 | |
4408 | if (event != NXFME_MODIFIED || change_actions || change_cookie) { | |
4409 | ofmonitor_report(ofproto->connmgr, rule, event, 0, | |
cdbdeeda SH |
4410 | req ? req->ofconn : NULL, req ? req->xid : 0, |
4411 | change_actions ? actions : NULL); | |
834fe5cb | 4412 | } |
35f48b8b BP |
4413 | |
4414 | if (change_actions) { | |
4415 | learned_cookies_inc(ofproto, rule_get_actions(rule)); | |
4416 | learned_cookies_dec(ofproto, actions, &dead_cookies); | |
cdbdeeda | 4417 | rule_actions_destroy(actions); |
35f48b8b | 4418 | } |
834fe5cb | 4419 | } |
35f48b8b | 4420 | learned_cookies_flush(ofproto, &dead_cookies); |
834fe5cb BP |
4421 | |
4422 | if (fm->buffer_id != UINT32_MAX && req) { | |
cb220b39 SH |
4423 | return send_buffered_packet(req->ofconn, fm->buffer_id, |
4424 | rules->rules[0]); | |
5ecc9d81 | 4425 | } |
79eee1eb | 4426 | |
cb220b39 | 4427 | return 0; |
9ed18e46 BP |
4428 | } |
4429 | ||
9387b970 | 4430 | static enum ofperr |
baae3d02 BP |
4431 | modify_flows_add(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4432 | const struct flow_mod_requester *req) | |
15aaf599 | 4433 | OVS_REQUIRES(ofproto_mutex) |
9387b970 | 4434 | { |
b8266395 | 4435 | if (fm->cookie_mask != htonll(0) || fm->new_cookie == OVS_BE64_MAX) { |
9387b970 SH |
4436 | return 0; |
4437 | } | |
baae3d02 | 4438 | return add_flow(ofproto, fm, req); |
9387b970 SH |
4439 | } |
4440 | ||
90bf1e07 BP |
4441 | /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on |
4442 | * failure. | |
9ed18e46 BP |
4443 | * |
4444 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, | |
4445 | * if any. */ | |
90bf1e07 | 4446 | static enum ofperr |
baae3d02 BP |
4447 | modify_flows_loose(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4448 | const struct flow_mod_requester *req) | |
15aaf599 | 4449 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 4450 | { |
a9b22b7f | 4451 | struct rule_criteria criteria; |
a8e547c1 | 4452 | struct rule_collection rules; |
9ed18e46 BP |
4453 | int error; |
4454 | ||
a9b22b7f BP |
4455 | rule_criteria_init(&criteria, fm->table_id, &fm->match, 0, |
4456 | fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG11_ANY); | |
dd51dae2 BP |
4457 | rule_criteria_require_rw(&criteria, |
4458 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
a9b22b7f BP |
4459 | error = collect_rules_loose(ofproto, &criteria, &rules); |
4460 | rule_criteria_destroy(&criteria); | |
4461 | ||
a8e547c1 BP |
4462 | if (!error) { |
4463 | error = (rules.n > 0 | |
baae3d02 BP |
4464 | ? modify_flows__(ofproto, fm, &rules, req) |
4465 | : modify_flows_add(ofproto, fm, req)); | |
623e1caf | 4466 | } |
a8e547c1 BP |
4467 | |
4468 | rule_collection_destroy(&rules); | |
4469 | ||
4470 | return error; | |
79eee1eb BP |
4471 | } |
4472 | ||
4473 | /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error | |
baae3d02 | 4474 | * code on failure. */ |
90bf1e07 | 4475 | static enum ofperr |
baae3d02 BP |
4476 | modify_flow_strict(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4477 | const struct flow_mod_requester *req) | |
15aaf599 | 4478 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4479 | { |
a9b22b7f | 4480 | struct rule_criteria criteria; |
a8e547c1 | 4481 | struct rule_collection rules; |
6c1491fb BP |
4482 | int error; |
4483 | ||
a9b22b7f BP |
4484 | rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority, |
4485 | fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG11_ANY); | |
dd51dae2 BP |
4486 | rule_criteria_require_rw(&criteria, |
4487 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
a9b22b7f BP |
4488 | error = collect_rules_strict(ofproto, &criteria, &rules); |
4489 | rule_criteria_destroy(&criteria); | |
4490 | ||
a8e547c1 BP |
4491 | if (!error) { |
4492 | if (rules.n == 0) { | |
baae3d02 | 4493 | error = modify_flows_add(ofproto, fm, req); |
a8e547c1 | 4494 | } else if (rules.n == 1) { |
baae3d02 | 4495 | error = modify_flows__(ofproto, fm, &rules, req); |
a8e547c1 | 4496 | } |
623e1caf | 4497 | } |
a8e547c1 BP |
4498 | |
4499 | rule_collection_destroy(&rules); | |
4500 | ||
4501 | return error; | |
79eee1eb | 4502 | } |
9ed18e46 BP |
4503 | \f |
4504 | /* OFPFC_DELETE implementation. */ | |
79eee1eb | 4505 | |
9ca4a86f | 4506 | /* Deletes the rules listed in 'rules'. */ |
254750ce | 4507 | static void |
9ca4a86f | 4508 | delete_flows__(const struct rule_collection *rules, |
baae3d02 BP |
4509 | enum ofp_flow_removed_reason reason, |
4510 | const struct flow_mod_requester *req) | |
15aaf599 | 4511 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 4512 | { |
9ca4a86f | 4513 | if (rules->n) { |
35f48b8b | 4514 | struct list dead_cookies = LIST_INITIALIZER(&dead_cookies); |
9ca4a86f BP |
4515 | struct ofproto *ofproto = rules->rules[0]->ofproto; |
4516 | size_t i; | |
79eee1eb | 4517 | |
9ca4a86f BP |
4518 | for (i = 0; i < rules->n; i++) { |
4519 | struct rule *rule = rules->rules[i]; | |
35f48b8b | 4520 | const struct rule_actions *actions = rule_get_actions(rule); |
79eee1eb | 4521 | |
9ca4a86f BP |
4522 | ofproto_rule_send_removed(rule, reason); |
4523 | ||
4524 | ofmonitor_report(ofproto->connmgr, rule, NXFME_DELETED, reason, | |
cdbdeeda SH |
4525 | req ? req->ofconn : NULL, req ? req->xid : 0, |
4526 | NULL); | |
9ca4a86f BP |
4527 | oftable_remove_rule(rule); |
4528 | ofproto->ofproto_class->rule_delete(rule); | |
35f48b8b BP |
4529 | |
4530 | learned_cookies_dec(ofproto, actions, &dead_cookies); | |
9ca4a86f | 4531 | } |
35f48b8b | 4532 | learned_cookies_flush(ofproto, &dead_cookies); |
9ca4a86f BP |
4533 | ofmonitor_flush(ofproto->connmgr); |
4534 | } | |
79eee1eb | 4535 | } |
79eee1eb BP |
4536 | |
4537 | /* Implements OFPFC_DELETE. */ | |
90bf1e07 | 4538 | static enum ofperr |
baae3d02 | 4539 | delete_flows_loose(struct ofproto *ofproto, |
7024dffe | 4540 | const struct ofputil_flow_mod *fm, |
baae3d02 | 4541 | const struct flow_mod_requester *req) |
15aaf599 | 4542 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4543 | { |
a9b22b7f | 4544 | struct rule_criteria criteria; |
a8e547c1 | 4545 | struct rule_collection rules; |
90bf1e07 | 4546 | enum ofperr error; |
064af421 | 4547 | |
a9b22b7f BP |
4548 | rule_criteria_init(&criteria, fm->table_id, &fm->match, 0, |
4549 | fm->cookie, fm->cookie_mask, | |
4550 | fm->out_port, fm->out_group); | |
dd51dae2 BP |
4551 | rule_criteria_require_rw(&criteria, |
4552 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
a9b22b7f BP |
4553 | error = collect_rules_loose(ofproto, &criteria, &rules); |
4554 | rule_criteria_destroy(&criteria); | |
4555 | ||
a8e547c1 | 4556 | if (!error && rules.n > 0) { |
9ca4a86f | 4557 | delete_flows__(&rules, fm->delete_reason, req); |
a8e547c1 BP |
4558 | } |
4559 | rule_collection_destroy(&rules); | |
4560 | ||
4561 | return error; | |
064af421 BP |
4562 | } |
4563 | ||
79eee1eb | 4564 | /* Implements OFPFC_DELETE_STRICT. */ |
90bf1e07 | 4565 | static enum ofperr |
baae3d02 BP |
4566 | delete_flow_strict(struct ofproto *ofproto, const struct ofputil_flow_mod *fm, |
4567 | const struct flow_mod_requester *req) | |
15aaf599 | 4568 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4569 | { |
a9b22b7f | 4570 | struct rule_criteria criteria; |
a8e547c1 | 4571 | struct rule_collection rules; |
90bf1e07 | 4572 | enum ofperr error; |
79eee1eb | 4573 | |
a9b22b7f BP |
4574 | rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority, |
4575 | fm->cookie, fm->cookie_mask, | |
4576 | fm->out_port, fm->out_group); | |
dd51dae2 BP |
4577 | rule_criteria_require_rw(&criteria, |
4578 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
a9b22b7f BP |
4579 | error = collect_rules_strict(ofproto, &criteria, &rules); |
4580 | rule_criteria_destroy(&criteria); | |
4581 | ||
a8e547c1 | 4582 | if (!error && rules.n > 0) { |
9ca4a86f | 4583 | delete_flows__(&rules, fm->delete_reason, req); |
a8e547c1 BP |
4584 | } |
4585 | rule_collection_destroy(&rules); | |
4586 | ||
4587 | return error; | |
abe529af BP |
4588 | } |
4589 | ||
4590 | static void | |
4591 | ofproto_rule_send_removed(struct rule *rule, uint8_t reason) | |
15aaf599 | 4592 | OVS_REQUIRES(ofproto_mutex) |
abe529af BP |
4593 | { |
4594 | struct ofputil_flow_removed fr; | |
dc437090 | 4595 | long long int used; |
abe529af | 4596 | |
834fe5cb BP |
4597 | if (rule_is_hidden(rule) || |
4598 | !(rule->flags & OFPUTIL_FF_SEND_FLOW_REM)) { | |
abe529af BP |
4599 | return; |
4600 | } | |
4601 | ||
5cb7a798 | 4602 | minimatch_expand(&rule->cr.match, &fr.match); |
81a76618 | 4603 | fr.priority = rule->cr.priority; |
abe529af BP |
4604 | fr.cookie = rule->flow_cookie; |
4605 | fr.reason = reason; | |
95216219 | 4606 | fr.table_id = rule->table_id; |
65e0be10 BP |
4607 | calc_duration(rule->created, time_msec(), |
4608 | &fr.duration_sec, &fr.duration_nsec); | |
d10976b7 | 4609 | ovs_mutex_lock(&rule->mutex); |
abe529af | 4610 | fr.idle_timeout = rule->idle_timeout; |
fa2bad0f | 4611 | fr.hard_timeout = rule->hard_timeout; |
d10976b7 | 4612 | ovs_mutex_unlock(&rule->mutex); |
abe529af | 4613 | rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count, |
dc437090 | 4614 | &fr.byte_count, &used); |
abe529af BP |
4615 | |
4616 | connmgr_send_flow_removed(rule->ofproto->connmgr, &fr); | |
4617 | } | |
4618 | ||
4619 | /* Sends an OpenFlow "flow removed" message with the given 'reason' (either | |
4620 | * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its | |
4621 | * ofproto. | |
4622 | * | |
4623 | * ofproto implementation ->run() functions should use this function to expire | |
4624 | * OpenFlow flows. */ | |
4625 | void | |
4626 | ofproto_rule_expire(struct rule *rule, uint8_t reason) | |
15aaf599 | 4627 | OVS_REQUIRES(ofproto_mutex) |
abe529af | 4628 | { |
b20f4073 | 4629 | ofproto_rule_delete__(rule, reason); |
79eee1eb | 4630 | } |
994c9973 BP |
4631 | |
4632 | /* Reduces '*timeout' to no more than 'max'. A value of zero in either case | |
4633 | * means "infinite". */ | |
4634 | static void | |
4635 | reduce_timeout(uint16_t max, uint16_t *timeout) | |
4636 | { | |
4637 | if (max && (!*timeout || *timeout > max)) { | |
4638 | *timeout = max; | |
4639 | } | |
4640 | } | |
4641 | ||
4642 | /* If 'idle_timeout' is nonzero, and 'rule' has no idle timeout or an idle | |
4643 | * timeout greater than 'idle_timeout', lowers 'rule''s idle timeout to | |
4644 | * 'idle_timeout' seconds. Similarly for 'hard_timeout'. | |
4645 | * | |
4646 | * Suitable for implementing OFPACT_FIN_TIMEOUT. */ | |
4647 | void | |
4648 | ofproto_rule_reduce_timeouts(struct rule *rule, | |
4649 | uint16_t idle_timeout, uint16_t hard_timeout) | |
d10976b7 | 4650 | OVS_EXCLUDED(ofproto_mutex, rule->mutex) |
994c9973 BP |
4651 | { |
4652 | if (!idle_timeout && !hard_timeout) { | |
4653 | return; | |
4654 | } | |
4655 | ||
abe7b10f | 4656 | ovs_mutex_lock(&ofproto_mutex); |
994c9973 BP |
4657 | if (list_is_empty(&rule->expirable)) { |
4658 | list_insert(&rule->ofproto->expirable, &rule->expirable); | |
4659 | } | |
abe7b10f | 4660 | ovs_mutex_unlock(&ofproto_mutex); |
994c9973 | 4661 | |
d10976b7 | 4662 | ovs_mutex_lock(&rule->mutex); |
994c9973 BP |
4663 | reduce_timeout(idle_timeout, &rule->idle_timeout); |
4664 | reduce_timeout(hard_timeout, &rule->hard_timeout); | |
d10976b7 | 4665 | ovs_mutex_unlock(&rule->mutex); |
994c9973 | 4666 | } |
79eee1eb | 4667 | \f |
90bf1e07 | 4668 | static enum ofperr |
2e4f5fcf | 4669 | handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
15aaf599 | 4670 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 4671 | { |
a5b8d268 | 4672 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
a9a2da38 | 4673 | struct ofputil_flow_mod fm; |
f25d0cf3 BP |
4674 | uint64_t ofpacts_stub[1024 / 8]; |
4675 | struct ofpbuf ofpacts; | |
90bf1e07 | 4676 | enum ofperr error; |
064af421 | 4677 | |
76589937 | 4678 | error = reject_slave_controller(ofconn); |
9deba63b | 4679 | if (error) { |
f25d0cf3 | 4680 | goto exit; |
9deba63b | 4681 | } |
3052b0c5 | 4682 | |
f25d0cf3 BP |
4683 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
4684 | error = ofputil_decode_flow_mod(&fm, oh, ofconn_get_protocol(ofconn), | |
7e9f8266 BP |
4685 | &ofpacts, |
4686 | u16_to_ofp(ofproto->max_ports), | |
4687 | ofproto->n_tables); | |
4688 | if (!error) { | |
4689 | error = ofproto_check_ofpacts(ofproto, fm.ofpacts, fm.ofpacts_len); | |
4690 | } | |
548de4dd | 4691 | if (!error) { |
baae3d02 BP |
4692 | struct flow_mod_requester req; |
4693 | ||
4694 | req.ofconn = ofconn; | |
834fe5cb | 4695 | req.xid = oh->xid; |
baae3d02 | 4696 | error = handle_flow_mod__(ofproto, &fm, &req); |
49bdc010 | 4697 | } |
a5b8d268 | 4698 | if (error) { |
f25d0cf3 | 4699 | goto exit_free_ofpacts; |
a5b8d268 | 4700 | } |
2e310801 | 4701 | |
696d1bcf | 4702 | ofconn_report_flow_mod(ofconn, fm.command); |
a5b8d268 | 4703 | |
f25d0cf3 BP |
4704 | exit_free_ofpacts: |
4705 | ofpbuf_uninit(&ofpacts); | |
4706 | exit: | |
4707 | return error; | |
75a75043 BP |
4708 | } |
4709 | ||
90bf1e07 | 4710 | static enum ofperr |
baae3d02 BP |
4711 | handle_flow_mod__(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4712 | const struct flow_mod_requester *req) | |
15aaf599 | 4713 | OVS_EXCLUDED(ofproto_mutex) |
75a75043 | 4714 | { |
35412852 | 4715 | enum ofperr error; |
75a75043 | 4716 | |
15aaf599 | 4717 | ovs_mutex_lock(&ofproto_mutex); |
baae3d02 BP |
4718 | switch (fm->command) { |
4719 | case OFPFC_ADD: | |
4720 | error = add_flow(ofproto, fm, req); | |
4721 | break; | |
3052b0c5 | 4722 | |
baae3d02 BP |
4723 | case OFPFC_MODIFY: |
4724 | error = modify_flows_loose(ofproto, fm, req); | |
4725 | break; | |
3052b0c5 | 4726 | |
baae3d02 BP |
4727 | case OFPFC_MODIFY_STRICT: |
4728 | error = modify_flow_strict(ofproto, fm, req); | |
4729 | break; | |
3052b0c5 | 4730 | |
baae3d02 BP |
4731 | case OFPFC_DELETE: |
4732 | error = delete_flows_loose(ofproto, fm, req); | |
4733 | break; | |
3052b0c5 | 4734 | |
baae3d02 BP |
4735 | case OFPFC_DELETE_STRICT: |
4736 | error = delete_flow_strict(ofproto, fm, req); | |
4737 | break; | |
3052b0c5 | 4738 | |
baae3d02 BP |
4739 | default: |
4740 | if (fm->command > 0xff) { | |
4741 | VLOG_WARN_RL(&rl, "%s: flow_mod has explicit table_id but " | |
4742 | "flow_mod_table_id extension is not enabled", | |
4743 | ofproto->name); | |
6c1491fb | 4744 | } |
baae3d02 BP |
4745 | error = OFPERR_OFPFMFC_BAD_COMMAND; |
4746 | break; | |
3052b0c5 | 4747 | } |
baae3d02 | 4748 | ofmonitor_flush(ofproto->connmgr); |
15aaf599 | 4749 | ovs_mutex_unlock(&ofproto_mutex); |
35412852 BP |
4750 | |
4751 | run_rule_executes(ofproto); | |
4752 | return error; | |
3052b0c5 BP |
4753 | } |
4754 | ||
90bf1e07 | 4755 | static enum ofperr |
d1e2cf21 | 4756 | handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh) |
9deba63b | 4757 | { |
f4f1ea7e BP |
4758 | struct ofputil_role_request request; |
4759 | struct ofputil_role_request reply; | |
9deba63b | 4760 | struct ofpbuf *buf; |
6ea4776b JR |
4761 | enum ofperr error; |
4762 | ||
f4f1ea7e | 4763 | error = ofputil_decode_role_message(oh, &request); |
6ea4776b JR |
4764 | if (error) { |
4765 | return error; | |
4766 | } | |
9deba63b | 4767 | |
f4f1ea7e | 4768 | if (request.role != OFPCR12_ROLE_NOCHANGE) { |
f4f1ea7e BP |
4769 | if (request.have_generation_id |
4770 | && !ofconn_set_master_election_id(ofconn, request.generation_id)) { | |
4771 | return OFPERR_OFPRRFC_STALE; | |
6ea4776b | 4772 | } |
6ea4776b | 4773 | |
f4f1ea7e BP |
4774 | ofconn_set_role(ofconn, request.role); |
4775 | } | |
9deba63b | 4776 | |
f4f1ea7e | 4777 | reply.role = ofconn_get_role(ofconn); |
147cc9d3 BP |
4778 | reply.have_generation_id = ofconn_get_master_election_id( |
4779 | ofconn, &reply.generation_id); | |
f4f1ea7e | 4780 | buf = ofputil_encode_role_reply(oh, &reply); |
b0421aa2 | 4781 | ofconn_send_reply(ofconn, buf); |
9deba63b BP |
4782 | |
4783 | return 0; | |
4784 | } | |
4785 | ||
90bf1e07 | 4786 | static enum ofperr |
6c1491fb BP |
4787 | handle_nxt_flow_mod_table_id(struct ofconn *ofconn, |
4788 | const struct ofp_header *oh) | |
4789 | { | |
982697a4 | 4790 | const struct nx_flow_mod_table_id *msg = ofpmsg_body(oh); |
27527aa0 BP |
4791 | enum ofputil_protocol cur, next; |
4792 | ||
4793 | cur = ofconn_get_protocol(ofconn); | |
4794 | next = ofputil_protocol_set_tid(cur, msg->set != 0); | |
4795 | ofconn_set_protocol(ofconn, next); | |
6c1491fb | 4796 | |
6c1491fb BP |
4797 | return 0; |
4798 | } | |
4799 | ||
90bf1e07 | 4800 | static enum ofperr |
d1e2cf21 | 4801 | handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh) |
09246b99 | 4802 | { |
982697a4 | 4803 | const struct nx_set_flow_format *msg = ofpmsg_body(oh); |
27527aa0 BP |
4804 | enum ofputil_protocol cur, next; |
4805 | enum ofputil_protocol next_base; | |
09246b99 | 4806 | |
27527aa0 BP |
4807 | next_base = ofputil_nx_flow_format_to_protocol(ntohl(msg->format)); |
4808 | if (!next_base) { | |
90bf1e07 | 4809 | return OFPERR_OFPBRC_EPERM; |
09246b99 | 4810 | } |
7ee20df1 | 4811 | |
27527aa0 BP |
4812 | cur = ofconn_get_protocol(ofconn); |
4813 | next = ofputil_protocol_set_base(cur, next_base); | |
27527aa0 | 4814 | ofconn_set_protocol(ofconn, next); |
b20f4073 | 4815 | |
7ee20df1 | 4816 | return 0; |
09246b99 BP |
4817 | } |
4818 | ||
90bf1e07 | 4819 | static enum ofperr |
54834960 EJ |
4820 | handle_nxt_set_packet_in_format(struct ofconn *ofconn, |
4821 | const struct ofp_header *oh) | |
4822 | { | |
982697a4 | 4823 | const struct nx_set_packet_in_format *msg = ofpmsg_body(oh); |
54834960 EJ |
4824 | uint32_t format; |
4825 | ||
54834960 | 4826 | format = ntohl(msg->format); |
a15f0eeb | 4827 | if (format != NXPIF_OPENFLOW10 && format != NXPIF_NXM) { |
90bf1e07 | 4828 | return OFPERR_OFPBRC_EPERM; |
54834960 EJ |
4829 | } |
4830 | ||
54834960 EJ |
4831 | ofconn_set_packet_in_format(ofconn, format); |
4832 | return 0; | |
4833 | } | |
4834 | ||
80d5aefd BP |
4835 | static enum ofperr |
4836 | handle_nxt_set_async_config(struct ofconn *ofconn, const struct ofp_header *oh) | |
4837 | { | |
982697a4 | 4838 | const struct nx_async_config *msg = ofpmsg_body(oh); |
80d5aefd BP |
4839 | uint32_t master[OAM_N_TYPES]; |
4840 | uint32_t slave[OAM_N_TYPES]; | |
4841 | ||
4842 | master[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[0]); | |
4843 | master[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[0]); | |
4844 | master[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[0]); | |
4845 | ||
4846 | slave[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[1]); | |
4847 | slave[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[1]); | |
4848 | slave[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[1]); | |
4849 | ||
4850 | ofconn_set_async_config(ofconn, master, slave); | |
4550b647 MM |
4851 | if (ofconn_get_type(ofconn) == OFCONN_SERVICE && |
4852 | !ofconn_get_miss_send_len(ofconn)) { | |
4853 | ofconn_set_miss_send_len(ofconn, OFP_DEFAULT_MISS_SEND_LEN); | |
4854 | } | |
80d5aefd BP |
4855 | |
4856 | return 0; | |
4857 | } | |
4858 | ||
c423b3b3 AC |
4859 | static enum ofperr |
4860 | handle_nxt_get_async_request(struct ofconn *ofconn, const struct ofp_header *oh) | |
4861 | { | |
4862 | struct ofpbuf *buf; | |
4863 | uint32_t master[OAM_N_TYPES]; | |
4864 | uint32_t slave[OAM_N_TYPES]; | |
4865 | struct nx_async_config *msg; | |
4866 | ||
4867 | ofconn_get_async_config(ofconn, master, slave); | |
4868 | buf = ofpraw_alloc_reply(OFPRAW_OFPT13_GET_ASYNC_REPLY, oh, 0); | |
4869 | msg = ofpbuf_put_zeros(buf, sizeof *msg); | |
4870 | ||
4871 | msg->packet_in_mask[0] = htonl(master[OAM_PACKET_IN]); | |
4872 | msg->port_status_mask[0] = htonl(master[OAM_PORT_STATUS]); | |
4873 | msg->flow_removed_mask[0] = htonl(master[OAM_FLOW_REMOVED]); | |
4874 | ||
4875 | msg->packet_in_mask[1] = htonl(slave[OAM_PACKET_IN]); | |
4876 | msg->port_status_mask[1] = htonl(slave[OAM_PORT_STATUS]); | |
4877 | msg->flow_removed_mask[1] = htonl(slave[OAM_FLOW_REMOVED]); | |
4878 | ||
4879 | ofconn_send_reply(ofconn, buf); | |
4880 | ||
4881 | return 0; | |
4882 | } | |
4883 | ||
a7349929 BP |
4884 | static enum ofperr |
4885 | handle_nxt_set_controller_id(struct ofconn *ofconn, | |
4886 | const struct ofp_header *oh) | |
4887 | { | |
982697a4 | 4888 | const struct nx_controller_id *nci = ofpmsg_body(oh); |
a7349929 | 4889 | |
a7349929 BP |
4890 | if (!is_all_zeros(nci->zero, sizeof nci->zero)) { |
4891 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
4892 | } | |
4893 | ||
4894 | ofconn_set_controller_id(ofconn, ntohs(nci->controller_id)); | |
4895 | return 0; | |
4896 | } | |
4897 | ||
90bf1e07 | 4898 | static enum ofperr |
d1e2cf21 | 4899 | handle_barrier_request(struct ofconn *ofconn, const struct ofp_header *oh) |
246e61ea | 4900 | { |
246e61ea JP |
4901 | struct ofpbuf *buf; |
4902 | ||
982697a4 BP |
4903 | buf = ofpraw_alloc_reply((oh->version == OFP10_VERSION |
4904 | ? OFPRAW_OFPT10_BARRIER_REPLY | |
4905 | : OFPRAW_OFPT11_BARRIER_REPLY), oh, 0); | |
b0421aa2 | 4906 | ofconn_send_reply(ofconn, buf); |
246e61ea JP |
4907 | return 0; |
4908 | } | |
4909 | ||
2b07c8b1 BP |
4910 | static void |
4911 | ofproto_compose_flow_refresh_update(const struct rule *rule, | |
4912 | enum nx_flow_monitor_flags flags, | |
4913 | struct list *msgs) | |
15aaf599 | 4914 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 | 4915 | { |
6f00e29b | 4916 | const struct rule_actions *actions; |
2b07c8b1 | 4917 | struct ofputil_flow_update fu; |
5cb7a798 | 4918 | struct match match; |
2b07c8b1 | 4919 | |
2b07c8b1 BP |
4920 | fu.event = (flags & (NXFMF_INITIAL | NXFMF_ADD) |
4921 | ? NXFME_ADDED : NXFME_MODIFIED); | |
4922 | fu.reason = 0; | |
d10976b7 | 4923 | ovs_mutex_lock(&rule->mutex); |
2b07c8b1 BP |
4924 | fu.idle_timeout = rule->idle_timeout; |
4925 | fu.hard_timeout = rule->hard_timeout; | |
d10976b7 | 4926 | ovs_mutex_unlock(&rule->mutex); |
2b07c8b1 BP |
4927 | fu.table_id = rule->table_id; |
4928 | fu.cookie = rule->flow_cookie; | |
5cb7a798 BP |
4929 | minimatch_expand(&rule->cr.match, &match); |
4930 | fu.match = &match; | |
6b140a4e | 4931 | fu.priority = rule->cr.priority; |
6f00e29b | 4932 | |
b20f4073 | 4933 | actions = flags & NXFMF_ACTIONS ? rule_get_actions(rule) : NULL; |
6f00e29b BP |
4934 | fu.ofpacts = actions ? actions->ofpacts : NULL; |
4935 | fu.ofpacts_len = actions ? actions->ofpacts_len : 0; | |
2b07c8b1 BP |
4936 | |
4937 | if (list_is_empty(msgs)) { | |
4938 | ofputil_start_flow_update(msgs); | |
4939 | } | |
4940 | ofputil_append_flow_update(&fu, msgs); | |
4941 | } | |
4942 | ||
4943 | void | |
a8e547c1 BP |
4944 | ofmonitor_compose_refresh_updates(struct rule_collection *rules, |
4945 | struct list *msgs) | |
15aaf599 | 4946 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 | 4947 | { |
a8e547c1 | 4948 | size_t i; |
2b07c8b1 | 4949 | |
a8e547c1 BP |
4950 | for (i = 0; i < rules->n; i++) { |
4951 | struct rule *rule = rules->rules[i]; | |
2b07c8b1 BP |
4952 | enum nx_flow_monitor_flags flags = rule->monitor_flags; |
4953 | rule->monitor_flags = 0; | |
4954 | ||
4955 | ofproto_compose_flow_refresh_update(rule, flags, msgs); | |
4956 | } | |
4957 | } | |
4958 | ||
4959 | static void | |
4960 | ofproto_collect_ofmonitor_refresh_rule(const struct ofmonitor *m, | |
4961 | struct rule *rule, uint64_t seqno, | |
a8e547c1 | 4962 | struct rule_collection *rules) |
15aaf599 | 4963 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
4964 | { |
4965 | enum nx_flow_monitor_flags update; | |
4966 | ||
5e8b38b0 | 4967 | if (rule_is_hidden(rule)) { |
2b07c8b1 BP |
4968 | return; |
4969 | } | |
4970 | ||
b20f4073 | 4971 | if (!ofproto_rule_has_out_port(rule, m->out_port)) { |
2b07c8b1 BP |
4972 | return; |
4973 | } | |
4974 | ||
4975 | if (seqno) { | |
4976 | if (rule->add_seqno > seqno) { | |
4977 | update = NXFMF_ADD | NXFMF_MODIFY; | |
4978 | } else if (rule->modify_seqno > seqno) { | |
4979 | update = NXFMF_MODIFY; | |
4980 | } else { | |
4981 | return; | |
4982 | } | |
4983 | ||
4984 | if (!(m->flags & update)) { | |
4985 | return; | |
4986 | } | |
4987 | } else { | |
4988 | update = NXFMF_INITIAL; | |
4989 | } | |
4990 | ||
4991 | if (!rule->monitor_flags) { | |
a8e547c1 | 4992 | rule_collection_add(rules, rule); |
2b07c8b1 BP |
4993 | } |
4994 | rule->monitor_flags |= update | (m->flags & NXFMF_ACTIONS); | |
4995 | } | |
4996 | ||
4997 | static void | |
4998 | ofproto_collect_ofmonitor_refresh_rules(const struct ofmonitor *m, | |
4999 | uint64_t seqno, | |
a8e547c1 | 5000 | struct rule_collection *rules) |
15aaf599 | 5001 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
5002 | { |
5003 | const struct ofproto *ofproto = ofconn_get_ofproto(m->ofconn); | |
2b07c8b1 | 5004 | const struct oftable *table; |
81a76618 | 5005 | struct cls_rule target; |
2b07c8b1 | 5006 | |
5cb7a798 | 5007 | cls_rule_init_from_minimatch(&target, &m->match, 0); |
2b07c8b1 | 5008 | FOR_EACH_MATCHING_TABLE (table, m->table_id, ofproto) { |
2b07c8b1 BP |
5009 | struct rule *rule; |
5010 | ||
5f0476ce | 5011 | CLS_FOR_EACH_TARGET (rule, cr, &table->cls, &target) { |
2b07c8b1 BP |
5012 | ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules); |
5013 | } | |
5014 | } | |
48d28ac1 | 5015 | cls_rule_destroy(&target); |
2b07c8b1 BP |
5016 | } |
5017 | ||
5018 | static void | |
5019 | ofproto_collect_ofmonitor_initial_rules(struct ofmonitor *m, | |
a8e547c1 | 5020 | struct rule_collection *rules) |
15aaf599 | 5021 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
5022 | { |
5023 | if (m->flags & NXFMF_INITIAL) { | |
5024 | ofproto_collect_ofmonitor_refresh_rules(m, 0, rules); | |
5025 | } | |
5026 | } | |
5027 | ||
5028 | void | |
5029 | ofmonitor_collect_resume_rules(struct ofmonitor *m, | |
a8e547c1 | 5030 | uint64_t seqno, struct rule_collection *rules) |
15aaf599 | 5031 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
5032 | { |
5033 | ofproto_collect_ofmonitor_refresh_rules(m, seqno, rules); | |
5034 | } | |
5035 | ||
7b900689 SH |
5036 | static enum ofperr |
5037 | flow_monitor_delete(struct ofconn *ofconn, uint32_t id) | |
5038 | OVS_REQUIRES(ofproto_mutex) | |
5039 | { | |
5040 | struct ofmonitor *m; | |
5041 | enum ofperr error; | |
5042 | ||
5043 | m = ofmonitor_lookup(ofconn, id); | |
5044 | if (m) { | |
5045 | ofmonitor_destroy(m); | |
5046 | error = 0; | |
5047 | } else { | |
5048 | error = OFPERR_OFPMOFC_UNKNOWN_MONITOR; | |
5049 | } | |
5050 | ||
5051 | return error; | |
5052 | } | |
5053 | ||
2b07c8b1 | 5054 | static enum ofperr |
982697a4 | 5055 | handle_flow_monitor_request(struct ofconn *ofconn, const struct ofp_header *oh) |
15aaf599 | 5056 | OVS_EXCLUDED(ofproto_mutex) |
2b07c8b1 BP |
5057 | { |
5058 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5059 | struct ofmonitor **monitors; | |
5060 | size_t n_monitors, allocated_monitors; | |
a8e547c1 | 5061 | struct rule_collection rules; |
2b07c8b1 BP |
5062 | struct list replies; |
5063 | enum ofperr error; | |
2b07c8b1 BP |
5064 | struct ofpbuf b; |
5065 | size_t i; | |
5066 | ||
982697a4 | 5067 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
2b07c8b1 BP |
5068 | monitors = NULL; |
5069 | n_monitors = allocated_monitors = 0; | |
15aaf599 BP |
5070 | |
5071 | ovs_mutex_lock(&ofproto_mutex); | |
2b07c8b1 BP |
5072 | for (;;) { |
5073 | struct ofputil_flow_monitor_request request; | |
5074 | struct ofmonitor *m; | |
5075 | int retval; | |
5076 | ||
5077 | retval = ofputil_decode_flow_monitor_request(&request, &b); | |
5078 | if (retval == EOF) { | |
5079 | break; | |
5080 | } else if (retval) { | |
5081 | error = retval; | |
5082 | goto error; | |
5083 | } | |
5084 | ||
5085 | if (request.table_id != 0xff | |
5086 | && request.table_id >= ofproto->n_tables) { | |
5087 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
5088 | goto error; | |
5089 | } | |
5090 | ||
5091 | error = ofmonitor_create(&request, ofconn, &m); | |
5092 | if (error) { | |
5093 | goto error; | |
5094 | } | |
5095 | ||
5096 | if (n_monitors >= allocated_monitors) { | |
5097 | monitors = x2nrealloc(monitors, &allocated_monitors, | |
5098 | sizeof *monitors); | |
5099 | } | |
5100 | monitors[n_monitors++] = m; | |
5101 | } | |
5102 | ||
a8e547c1 | 5103 | rule_collection_init(&rules); |
2b07c8b1 BP |
5104 | for (i = 0; i < n_monitors; i++) { |
5105 | ofproto_collect_ofmonitor_initial_rules(monitors[i], &rules); | |
5106 | } | |
5107 | ||
982697a4 | 5108 | ofpmp_init(&replies, oh); |
2b07c8b1 | 5109 | ofmonitor_compose_refresh_updates(&rules, &replies); |
15aaf599 BP |
5110 | ovs_mutex_unlock(&ofproto_mutex); |
5111 | ||
a8e547c1 BP |
5112 | rule_collection_destroy(&rules); |
5113 | ||
2b07c8b1 | 5114 | ofconn_send_replies(ofconn, &replies); |
2b07c8b1 BP |
5115 | free(monitors); |
5116 | ||
5117 | return 0; | |
5118 | ||
5119 | error: | |
5120 | for (i = 0; i < n_monitors; i++) { | |
5121 | ofmonitor_destroy(monitors[i]); | |
5122 | } | |
5123 | free(monitors); | |
4cd1bc9d BP |
5124 | ovs_mutex_unlock(&ofproto_mutex); |
5125 | ||
2b07c8b1 BP |
5126 | return error; |
5127 | } | |
5128 | ||
5129 | static enum ofperr | |
5130 | handle_flow_monitor_cancel(struct ofconn *ofconn, const struct ofp_header *oh) | |
15aaf599 | 5131 | OVS_EXCLUDED(ofproto_mutex) |
2b07c8b1 | 5132 | { |
15aaf599 | 5133 | enum ofperr error; |
2b07c8b1 BP |
5134 | uint32_t id; |
5135 | ||
5136 | id = ofputil_decode_flow_monitor_cancel(oh); | |
15aaf599 BP |
5137 | |
5138 | ovs_mutex_lock(&ofproto_mutex); | |
7b900689 | 5139 | error = flow_monitor_delete(ofconn, id); |
15aaf599 | 5140 | ovs_mutex_unlock(&ofproto_mutex); |
2b07c8b1 | 5141 | |
15aaf599 | 5142 | return error; |
2b07c8b1 BP |
5143 | } |
5144 | ||
9cae45dc JR |
5145 | /* Meters implementation. |
5146 | * | |
5147 | * Meter table entry, indexed by the OpenFlow meter_id. | |
9cae45dc JR |
5148 | * 'created' is used to compute the duration for meter stats. |
5149 | * 'list rules' is needed so that we can delete the dependent rules when the | |
5150 | * meter table entry is deleted. | |
5151 | * 'provider_meter_id' is for the provider's private use. | |
5152 | */ | |
5153 | struct meter { | |
5154 | long long int created; /* Time created. */ | |
5155 | struct list rules; /* List of "struct rule_dpif"s. */ | |
5156 | ofproto_meter_id provider_meter_id; | |
5157 | uint16_t flags; /* Meter flags. */ | |
5158 | uint16_t n_bands; /* Number of meter bands. */ | |
5159 | struct ofputil_meter_band *bands; | |
5160 | }; | |
5161 | ||
5162 | /* | |
5163 | * This is used in instruction validation at flow set-up time, | |
5164 | * as flows may not use non-existing meters. | |
9cae45dc JR |
5165 | * Return value of UINT32_MAX signifies an invalid meter. |
5166 | */ | |
65efd2ab JR |
5167 | static uint32_t |
5168 | get_provider_meter_id(const struct ofproto *ofproto, uint32_t of_meter_id) | |
9cae45dc JR |
5169 | { |
5170 | if (of_meter_id && of_meter_id <= ofproto->meter_features.max_meters) { | |
5171 | const struct meter *meter = ofproto->meters[of_meter_id]; | |
5172 | if (meter) { | |
5173 | return meter->provider_meter_id.uint32; | |
5174 | } | |
5175 | } | |
5176 | return UINT32_MAX; | |
5177 | } | |
5178 | ||
062fea06 BP |
5179 | /* Finds the meter invoked by 'rule''s actions and adds 'rule' to the meter's |
5180 | * list of rules. */ | |
5181 | static void | |
5182 | meter_insert_rule(struct rule *rule) | |
5183 | { | |
5184 | const struct rule_actions *a = rule_get_actions(rule); | |
5185 | uint32_t meter_id = ofpacts_get_meter(a->ofpacts, a->ofpacts_len); | |
5186 | struct meter *meter = rule->ofproto->meters[meter_id]; | |
5187 | ||
5188 | list_insert(&meter->rules, &rule->meter_list_node); | |
5189 | } | |
5190 | ||
9cae45dc JR |
5191 | static void |
5192 | meter_update(struct meter *meter, const struct ofputil_meter_config *config) | |
5193 | { | |
5194 | free(meter->bands); | |
5195 | ||
5196 | meter->flags = config->flags; | |
5197 | meter->n_bands = config->n_bands; | |
5198 | meter->bands = xmemdup(config->bands, | |
5199 | config->n_bands * sizeof *meter->bands); | |
5200 | } | |
5201 | ||
5202 | static struct meter * | |
5203 | meter_create(const struct ofputil_meter_config *config, | |
5204 | ofproto_meter_id provider_meter_id) | |
5205 | { | |
5206 | struct meter *meter; | |
5207 | ||
5208 | meter = xzalloc(sizeof *meter); | |
5209 | meter->provider_meter_id = provider_meter_id; | |
5210 | meter->created = time_msec(); | |
5211 | list_init(&meter->rules); | |
5212 | ||
5213 | meter_update(meter, config); | |
5214 | ||
5215 | return meter; | |
5216 | } | |
5217 | ||
6b3f7f02 JR |
5218 | static void |
5219 | meter_delete(struct ofproto *ofproto, uint32_t first, uint32_t last) | |
15aaf599 | 5220 | OVS_REQUIRES(ofproto_mutex) |
6b3f7f02 JR |
5221 | { |
5222 | uint32_t mid; | |
5223 | for (mid = first; mid <= last; ++mid) { | |
5224 | struct meter *meter = ofproto->meters[mid]; | |
5225 | if (meter) { | |
5226 | ofproto->meters[mid] = NULL; | |
5227 | ofproto->ofproto_class->meter_del(ofproto, | |
5228 | meter->provider_meter_id); | |
5229 | free(meter->bands); | |
5230 | free(meter); | |
5231 | } | |
5232 | } | |
5233 | } | |
5234 | ||
9cae45dc JR |
5235 | static enum ofperr |
5236 | handle_add_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm) | |
5237 | { | |
5238 | ofproto_meter_id provider_meter_id = { UINT32_MAX }; | |
5239 | struct meter **meterp = &ofproto->meters[mm->meter.meter_id]; | |
5240 | enum ofperr error; | |
5241 | ||
5242 | if (*meterp) { | |
5243 | return OFPERR_OFPMMFC_METER_EXISTS; | |
5244 | } | |
5245 | ||
5246 | error = ofproto->ofproto_class->meter_set(ofproto, &provider_meter_id, | |
5247 | &mm->meter); | |
5248 | if (!error) { | |
5249 | ovs_assert(provider_meter_id.uint32 != UINT32_MAX); | |
5250 | *meterp = meter_create(&mm->meter, provider_meter_id); | |
5251 | } | |
f0f8c6c2 | 5252 | return error; |
9cae45dc JR |
5253 | } |
5254 | ||
5255 | static enum ofperr | |
5256 | handle_modify_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm) | |
5257 | { | |
5258 | struct meter *meter = ofproto->meters[mm->meter.meter_id]; | |
5259 | enum ofperr error; | |
e555eb7c | 5260 | uint32_t provider_meter_id; |
9cae45dc JR |
5261 | |
5262 | if (!meter) { | |
5263 | return OFPERR_OFPMMFC_UNKNOWN_METER; | |
5264 | } | |
5265 | ||
e555eb7c | 5266 | provider_meter_id = meter->provider_meter_id.uint32; |
9cae45dc JR |
5267 | error = ofproto->ofproto_class->meter_set(ofproto, |
5268 | &meter->provider_meter_id, | |
5269 | &mm->meter); | |
e555eb7c | 5270 | ovs_assert(meter->provider_meter_id.uint32 == provider_meter_id); |
9cae45dc JR |
5271 | if (!error) { |
5272 | meter_update(meter, &mm->meter); | |
5273 | } | |
5274 | return error; | |
5275 | } | |
5276 | ||
5277 | static enum ofperr | |
baae3d02 | 5278 | handle_delete_meter(struct ofconn *ofconn, struct ofputil_meter_mod *mm) |
15aaf599 | 5279 | OVS_EXCLUDED(ofproto_mutex) |
9cae45dc JR |
5280 | { |
5281 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5282 | uint32_t meter_id = mm->meter.meter_id; | |
a8e547c1 BP |
5283 | struct rule_collection rules; |
5284 | enum ofperr error = 0; | |
9cae45dc | 5285 | uint32_t first, last; |
9cae45dc JR |
5286 | |
5287 | if (meter_id == OFPM13_ALL) { | |
5288 | first = 1; | |
5289 | last = ofproto->meter_features.max_meters; | |
5290 | } else { | |
5291 | if (!meter_id || meter_id > ofproto->meter_features.max_meters) { | |
5292 | return 0; | |
5293 | } | |
5294 | first = last = meter_id; | |
5295 | } | |
5296 | ||
5297 | /* First delete the rules that use this meter. If any of those rules are | |
5298 | * currently being modified, postpone the whole operation until later. */ | |
a8e547c1 | 5299 | rule_collection_init(&rules); |
15aaf599 | 5300 | ovs_mutex_lock(&ofproto_mutex); |
9cae45dc JR |
5301 | for (meter_id = first; meter_id <= last; ++meter_id) { |
5302 | struct meter *meter = ofproto->meters[meter_id]; | |
5303 | if (meter && !list_is_empty(&meter->rules)) { | |
5304 | struct rule *rule; | |
5305 | ||
5306 | LIST_FOR_EACH (rule, meter_list_node, &meter->rules) { | |
a8e547c1 | 5307 | rule_collection_add(&rules, rule); |
9cae45dc JR |
5308 | } |
5309 | } | |
5310 | } | |
a8e547c1 | 5311 | if (rules.n > 0) { |
9ca4a86f | 5312 | delete_flows__(&rules, OFPRR_METER_DELETE, NULL); |
9cae45dc JR |
5313 | } |
5314 | ||
5315 | /* Delete the meters. */ | |
6b3f7f02 | 5316 | meter_delete(ofproto, first, last); |
9cae45dc | 5317 | |
15aaf599 | 5318 | ovs_mutex_unlock(&ofproto_mutex); |
a8e547c1 BP |
5319 | rule_collection_destroy(&rules); |
5320 | ||
5321 | return error; | |
9cae45dc JR |
5322 | } |
5323 | ||
5324 | static enum ofperr | |
5325 | handle_meter_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
5326 | { | |
5327 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5328 | struct ofputil_meter_mod mm; | |
5329 | uint64_t bands_stub[256 / 8]; | |
5330 | struct ofpbuf bands; | |
5331 | uint32_t meter_id; | |
5332 | enum ofperr error; | |
5333 | ||
5334 | error = reject_slave_controller(ofconn); | |
5335 | if (error) { | |
5336 | return error; | |
5337 | } | |
5338 | ||
5339 | ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub); | |
5340 | ||
5341 | error = ofputil_decode_meter_mod(oh, &mm, &bands); | |
5342 | if (error) { | |
5343 | goto exit_free_bands; | |
5344 | } | |
5345 | ||
5346 | meter_id = mm.meter.meter_id; | |
5347 | ||
5348 | if (mm.command != OFPMC13_DELETE) { | |
5349 | /* Fails also when meters are not implemented by the provider. */ | |
b31e8700 | 5350 | if (meter_id == 0 || meter_id > OFPM13_MAX) { |
9cae45dc JR |
5351 | error = OFPERR_OFPMMFC_INVALID_METER; |
5352 | goto exit_free_bands; | |
b31e8700 JR |
5353 | } else if (meter_id > ofproto->meter_features.max_meters) { |
5354 | error = OFPERR_OFPMMFC_OUT_OF_METERS; | |
5355 | goto exit_free_bands; | |
9cae45dc JR |
5356 | } |
5357 | if (mm.meter.n_bands > ofproto->meter_features.max_bands) { | |
5358 | error = OFPERR_OFPMMFC_OUT_OF_BANDS; | |
5359 | goto exit_free_bands; | |
5360 | } | |
5361 | } | |
5362 | ||
5363 | switch (mm.command) { | |
5364 | case OFPMC13_ADD: | |
5365 | error = handle_add_meter(ofproto, &mm); | |
5366 | break; | |
5367 | ||
5368 | case OFPMC13_MODIFY: | |
5369 | error = handle_modify_meter(ofproto, &mm); | |
5370 | break; | |
5371 | ||
5372 | case OFPMC13_DELETE: | |
baae3d02 | 5373 | error = handle_delete_meter(ofconn, &mm); |
9cae45dc JR |
5374 | break; |
5375 | ||
5376 | default: | |
5377 | error = OFPERR_OFPMMFC_BAD_COMMAND; | |
5378 | break; | |
5379 | } | |
5380 | ||
5381 | exit_free_bands: | |
5382 | ofpbuf_uninit(&bands); | |
5383 | return error; | |
5384 | } | |
5385 | ||
5386 | static enum ofperr | |
5387 | handle_meter_features_request(struct ofconn *ofconn, | |
5388 | const struct ofp_header *request) | |
5389 | { | |
5390 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5391 | struct ofputil_meter_features features; | |
5392 | struct ofpbuf *b; | |
5393 | ||
5394 | if (ofproto->ofproto_class->meter_get_features) { | |
5395 | ofproto->ofproto_class->meter_get_features(ofproto, &features); | |
5396 | } else { | |
5397 | memset(&features, 0, sizeof features); | |
5398 | } | |
5399 | b = ofputil_encode_meter_features_reply(&features, request); | |
5400 | ||
5401 | ofconn_send_reply(ofconn, b); | |
5402 | return 0; | |
5403 | } | |
5404 | ||
5405 | static enum ofperr | |
5406 | handle_meter_request(struct ofconn *ofconn, const struct ofp_header *request, | |
5407 | enum ofptype type) | |
5408 | { | |
5409 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5410 | struct list replies; | |
5411 | uint64_t bands_stub[256 / 8]; | |
5412 | struct ofpbuf bands; | |
5413 | uint32_t meter_id, first, last; | |
5414 | ||
5415 | ofputil_decode_meter_request(request, &meter_id); | |
5416 | ||
5417 | if (meter_id == OFPM13_ALL) { | |
5418 | first = 1; | |
5419 | last = ofproto->meter_features.max_meters; | |
5420 | } else { | |
5421 | if (!meter_id || meter_id > ofproto->meter_features.max_meters || | |
5422 | !ofproto->meters[meter_id]) { | |
5423 | return OFPERR_OFPMMFC_UNKNOWN_METER; | |
5424 | } | |
5425 | first = last = meter_id; | |
5426 | } | |
5427 | ||
5428 | ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub); | |
5429 | ofpmp_init(&replies, request); | |
5430 | ||
5431 | for (meter_id = first; meter_id <= last; ++meter_id) { | |
5432 | struct meter *meter = ofproto->meters[meter_id]; | |
5433 | if (!meter) { | |
5434 | continue; /* Skip non-existing meters. */ | |
5435 | } | |
261bd854 | 5436 | if (type == OFPTYPE_METER_STATS_REQUEST) { |
9cae45dc JR |
5437 | struct ofputil_meter_stats stats; |
5438 | ||
5439 | stats.meter_id = meter_id; | |
5440 | ||
5441 | /* Provider sets the packet and byte counts, we do the rest. */ | |
5442 | stats.flow_count = list_size(&meter->rules); | |
5443 | calc_duration(meter->created, time_msec(), | |
5444 | &stats.duration_sec, &stats.duration_nsec); | |
5445 | stats.n_bands = meter->n_bands; | |
5446 | ofpbuf_clear(&bands); | |
5447 | stats.bands | |
5448 | = ofpbuf_put_uninit(&bands, | |
5449 | meter->n_bands * sizeof *stats.bands); | |
5450 | ||
5451 | if (!ofproto->ofproto_class->meter_get(ofproto, | |
5452 | meter->provider_meter_id, | |
5453 | &stats)) { | |
5454 | ofputil_append_meter_stats(&replies, &stats); | |
5455 | } | |
5456 | } else { /* type == OFPTYPE_METER_CONFIG_REQUEST */ | |
5457 | struct ofputil_meter_config config; | |
5458 | ||
5459 | config.meter_id = meter_id; | |
5460 | config.flags = meter->flags; | |
5461 | config.n_bands = meter->n_bands; | |
5462 | config.bands = meter->bands; | |
5463 | ofputil_append_meter_config(&replies, &config); | |
5464 | } | |
5465 | } | |
5466 | ||
5467 | ofconn_send_replies(ofconn, &replies); | |
5468 | ofpbuf_uninit(&bands); | |
5469 | return 0; | |
5470 | } | |
5471 | ||
3fc3b679 AZ |
5472 | static bool |
5473 | ofproto_group_lookup__(const struct ofproto *ofproto, uint32_t group_id, | |
5474 | struct ofgroup **group) | |
5475 | OVS_REQ_RDLOCK(ofproto->groups_rwlock) | |
7395c052 | 5476 | { |
7395c052 NZ |
5477 | HMAP_FOR_EACH_IN_BUCKET (*group, hmap_node, |
5478 | hash_int(group_id, 0), &ofproto->groups) { | |
5479 | if ((*group)->group_id == group_id) { | |
7395c052 NZ |
5480 | return true; |
5481 | } | |
5482 | } | |
3fc3b679 | 5483 | |
7395c052 NZ |
5484 | return false; |
5485 | } | |
5486 | ||
3fc3b679 AZ |
5487 | /* If the group exists, this function increments the groups's reference count. |
5488 | * | |
5489 | * Make sure to call ofproto_group_unref() after no longer needing to maintain | |
5490 | * a reference to the group. */ | |
5491 | bool | |
5492 | ofproto_group_lookup(const struct ofproto *ofproto, uint32_t group_id, | |
5493 | struct ofgroup **group) | |
7395c052 | 5494 | { |
3fc3b679 AZ |
5495 | bool found; |
5496 | ||
5497 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
5498 | found = ofproto_group_lookup__(ofproto, group_id, group); | |
5499 | if (found) { | |
5500 | ofproto_group_ref(*group); | |
7395c052 | 5501 | } |
3fc3b679 AZ |
5502 | ovs_rwlock_unlock(&ofproto->groups_rwlock); |
5503 | return found; | |
7395c052 NZ |
5504 | } |
5505 | ||
5506 | static bool | |
7e9f8266 | 5507 | ofproto_group_exists__(const struct ofproto *ofproto, uint32_t group_id) |
7395c052 NZ |
5508 | OVS_REQ_RDLOCK(ofproto->groups_rwlock) |
5509 | { | |
5510 | struct ofgroup *grp; | |
5511 | ||
5512 | HMAP_FOR_EACH_IN_BUCKET (grp, hmap_node, | |
5513 | hash_int(group_id, 0), &ofproto->groups) { | |
5514 | if (grp->group_id == group_id) { | |
5515 | return true; | |
5516 | } | |
5517 | } | |
5518 | return false; | |
5519 | } | |
5520 | ||
7e9f8266 BP |
5521 | static bool |
5522 | ofproto_group_exists(const struct ofproto *ofproto, uint32_t group_id) | |
5523 | OVS_EXCLUDED(ofproto->groups_rwlock) | |
5524 | { | |
5525 | bool exists; | |
5526 | ||
5527 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
5528 | exists = ofproto_group_exists__(ofproto, group_id); | |
5529 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5530 | ||
5531 | return exists; | |
5532 | } | |
5533 | ||
732feb93 SH |
5534 | static uint32_t |
5535 | group_get_ref_count(struct ofgroup *group) | |
5536 | OVS_EXCLUDED(ofproto_mutex) | |
5537 | { | |
eaf004bd | 5538 | struct ofproto *ofproto = CONST_CAST(struct ofproto *, group->ofproto); |
732feb93 SH |
5539 | struct rule_criteria criteria; |
5540 | struct rule_collection rules; | |
5541 | struct match match; | |
5542 | enum ofperr error; | |
5543 | uint32_t count; | |
5544 | ||
5545 | match_init_catchall(&match); | |
5546 | rule_criteria_init(&criteria, 0xff, &match, 0, htonll(0), htonll(0), | |
5547 | OFPP_ANY, group->group_id); | |
5548 | ovs_mutex_lock(&ofproto_mutex); | |
5549 | error = collect_rules_loose(ofproto, &criteria, &rules); | |
5550 | ovs_mutex_unlock(&ofproto_mutex); | |
5551 | rule_criteria_destroy(&criteria); | |
5552 | ||
5553 | count = !error && rules.n < UINT32_MAX ? rules.n : UINT32_MAX; | |
5554 | ||
5555 | rule_collection_destroy(&rules); | |
5556 | return count; | |
5557 | } | |
5558 | ||
7395c052 NZ |
5559 | static void |
5560 | append_group_stats(struct ofgroup *group, struct list *replies) | |
7395c052 NZ |
5561 | { |
5562 | struct ofputil_group_stats ogs; | |
eaf004bd | 5563 | const struct ofproto *ofproto = group->ofproto; |
7395c052 NZ |
5564 | long long int now = time_msec(); |
5565 | int error; | |
5566 | ||
646b2a9c SH |
5567 | ogs.bucket_stats = xmalloc(group->n_buckets * sizeof *ogs.bucket_stats); |
5568 | ||
732feb93 SH |
5569 | /* Provider sets the packet and byte counts, we do the rest. */ |
5570 | ogs.ref_count = group_get_ref_count(group); | |
5571 | ogs.n_buckets = group->n_buckets; | |
5572 | ||
7395c052 NZ |
5573 | error = (ofproto->ofproto_class->group_get_stats |
5574 | ? ofproto->ofproto_class->group_get_stats(group, &ogs) | |
5575 | : EOPNOTSUPP); | |
5576 | if (error) { | |
7395c052 NZ |
5577 | ogs.packet_count = UINT64_MAX; |
5578 | ogs.byte_count = UINT64_MAX; | |
7395c052 NZ |
5579 | memset(ogs.bucket_stats, 0xff, |
5580 | ogs.n_buckets * sizeof *ogs.bucket_stats); | |
5581 | } | |
5582 | ||
5583 | ogs.group_id = group->group_id; | |
5584 | calc_duration(group->created, now, &ogs.duration_sec, &ogs.duration_nsec); | |
5585 | ||
5586 | ofputil_append_group_stats(replies, &ogs); | |
646b2a9c SH |
5587 | |
5588 | free(ogs.bucket_stats); | |
7395c052 NZ |
5589 | } |
5590 | ||
19187a71 BP |
5591 | static void |
5592 | handle_group_request(struct ofconn *ofconn, | |
5593 | const struct ofp_header *request, uint32_t group_id, | |
5594 | void (*cb)(struct ofgroup *, struct list *replies)) | |
7395c052 NZ |
5595 | { |
5596 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
7395c052 | 5597 | struct ofgroup *group; |
19187a71 | 5598 | struct list replies; |
7395c052 NZ |
5599 | |
5600 | ofpmp_init(&replies, request); | |
7395c052 NZ |
5601 | if (group_id == OFPG_ALL) { |
5602 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
5603 | HMAP_FOR_EACH (group, hmap_node, &ofproto->groups) { | |
19187a71 | 5604 | cb(group, &replies); |
7395c052 NZ |
5605 | } |
5606 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5607 | } else { | |
5608 | if (ofproto_group_lookup(ofproto, group_id, &group)) { | |
19187a71 | 5609 | cb(group, &replies); |
809c7548 | 5610 | ofproto_group_unref(group); |
7395c052 NZ |
5611 | } |
5612 | } | |
7395c052 | 5613 | ofconn_send_replies(ofconn, &replies); |
7395c052 NZ |
5614 | } |
5615 | ||
5616 | static enum ofperr | |
19187a71 BP |
5617 | handle_group_stats_request(struct ofconn *ofconn, |
5618 | const struct ofp_header *request) | |
7395c052 | 5619 | { |
19187a71 BP |
5620 | uint32_t group_id; |
5621 | enum ofperr error; | |
7395c052 | 5622 | |
19187a71 BP |
5623 | error = ofputil_decode_group_stats_request(request, &group_id); |
5624 | if (error) { | |
5625 | return error; | |
7395c052 | 5626 | } |
7395c052 | 5627 | |
19187a71 BP |
5628 | handle_group_request(ofconn, request, group_id, append_group_stats); |
5629 | return 0; | |
5630 | } | |
5631 | ||
5632 | static void | |
5633 | append_group_desc(struct ofgroup *group, struct list *replies) | |
5634 | { | |
5635 | struct ofputil_group_desc gds; | |
7395c052 | 5636 | |
19187a71 BP |
5637 | gds.group_id = group->group_id; |
5638 | gds.type = group->type; | |
5639 | ofputil_append_group_desc_reply(&gds, &group->buckets, replies); | |
5640 | } | |
5641 | ||
5642 | static enum ofperr | |
5643 | handle_group_desc_stats_request(struct ofconn *ofconn, | |
5644 | const struct ofp_header *request) | |
5645 | { | |
5646 | handle_group_request(ofconn, request, | |
5647 | ofputil_decode_group_desc_request(request), | |
5648 | append_group_desc); | |
7395c052 NZ |
5649 | return 0; |
5650 | } | |
5651 | ||
5652 | static enum ofperr | |
5653 | handle_group_features_stats_request(struct ofconn *ofconn, | |
5654 | const struct ofp_header *request) | |
5655 | { | |
5656 | struct ofproto *p = ofconn_get_ofproto(ofconn); | |
5657 | struct ofpbuf *msg; | |
5658 | ||
5659 | msg = ofputil_encode_group_features_reply(&p->ogf, request); | |
5660 | if (msg) { | |
5661 | ofconn_send_reply(ofconn, msg); | |
5662 | } | |
5663 | ||
5664 | return 0; | |
5665 | } | |
5666 | ||
e8f9a7bb VG |
5667 | static enum ofperr |
5668 | handle_queue_get_config_request(struct ofconn *ofconn, | |
5669 | const struct ofp_header *oh) | |
5670 | { | |
5671 | struct ofproto *p = ofconn_get_ofproto(ofconn); | |
5672 | struct netdev_queue_dump queue_dump; | |
5673 | struct ofport *ofport; | |
5674 | unsigned int queue_id; | |
5675 | struct ofpbuf *reply; | |
5676 | struct smap details; | |
5677 | ofp_port_t request; | |
5678 | enum ofperr error; | |
5679 | ||
5680 | error = ofputil_decode_queue_get_config_request(oh, &request); | |
5681 | if (error) { | |
5682 | return error; | |
5683 | } | |
5684 | ||
5685 | ofport = ofproto_get_port(p, request); | |
5686 | if (!ofport) { | |
5687 | return OFPERR_OFPQOFC_BAD_PORT; | |
5688 | } | |
5689 | ||
5690 | reply = ofputil_encode_queue_get_config_reply(oh); | |
5691 | ||
5692 | smap_init(&details); | |
5693 | NETDEV_QUEUE_FOR_EACH (&queue_id, &details, &queue_dump, ofport->netdev) { | |
5694 | struct ofputil_queue_config queue; | |
5695 | ||
5696 | /* None of the existing queues have compatible properties, so we | |
5697 | * hard-code omitting min_rate and max_rate. */ | |
5698 | queue.queue_id = queue_id; | |
5699 | queue.min_rate = UINT16_MAX; | |
5700 | queue.max_rate = UINT16_MAX; | |
5701 | ofputil_append_queue_get_config_reply(reply, &queue); | |
5702 | } | |
5703 | smap_destroy(&details); | |
5704 | ||
5705 | ofconn_send_reply(ofconn, reply); | |
5706 | ||
5707 | return 0; | |
5708 | } | |
5709 | ||
809c7548 RW |
5710 | static enum ofperr |
5711 | init_group(struct ofproto *ofproto, struct ofputil_group_mod *gm, | |
5712 | struct ofgroup **ofgroup) | |
5713 | { | |
5714 | enum ofperr error; | |
eaf004bd | 5715 | const long long int now = time_msec(); |
809c7548 RW |
5716 | |
5717 | if (gm->group_id > OFPG_MAX) { | |
5718 | return OFPERR_OFPGMFC_INVALID_GROUP; | |
5719 | } | |
5720 | if (gm->type > OFPGT11_FF) { | |
5721 | return OFPERR_OFPGMFC_BAD_TYPE; | |
5722 | } | |
5723 | ||
5724 | *ofgroup = ofproto->ofproto_class->group_alloc(); | |
5725 | if (!*ofgroup) { | |
5726 | VLOG_WARN_RL(&rl, "%s: failed to allocate group", ofproto->name); | |
5727 | return OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
5728 | } | |
5729 | ||
eaf004bd AZ |
5730 | (*ofgroup)->ofproto = ofproto; |
5731 | *CONST_CAST(uint32_t *, &((*ofgroup)->group_id)) = gm->group_id; | |
5732 | *CONST_CAST(enum ofp11_group_type *, &(*ofgroup)->type) = gm->type; | |
5733 | *CONST_CAST(long long int *, &((*ofgroup)->created)) = now; | |
5734 | *CONST_CAST(long long int *, &((*ofgroup)->modified)) = now; | |
809c7548 RW |
5735 | ovs_refcount_init(&(*ofgroup)->ref_count); |
5736 | ||
5737 | list_move(&(*ofgroup)->buckets, &gm->buckets); | |
eaf004bd AZ |
5738 | *CONST_CAST(uint32_t *, &(*ofgroup)->n_buckets) = |
5739 | list_size(&(*ofgroup)->buckets); | |
809c7548 RW |
5740 | |
5741 | /* Construct called BEFORE any locks are held. */ | |
5742 | error = ofproto->ofproto_class->group_construct(*ofgroup); | |
5743 | if (error) { | |
5744 | ofputil_bucket_list_destroy(&(*ofgroup)->buckets); | |
5745 | ofproto->ofproto_class->group_dealloc(*ofgroup); | |
5746 | } | |
5747 | return error; | |
5748 | } | |
5749 | ||
6c5b90ce BP |
5750 | /* Implements the OFPGC11_ADD operation specified by 'gm', adding a group to |
5751 | * 'ofproto''s group table. Returns 0 on success or an OpenFlow error code on | |
5752 | * failure. */ | |
7395c052 NZ |
5753 | static enum ofperr |
5754 | add_group(struct ofproto *ofproto, struct ofputil_group_mod *gm) | |
5755 | { | |
5756 | struct ofgroup *ofgroup; | |
5757 | enum ofperr error; | |
5758 | ||
7395c052 | 5759 | /* Allocate new group and initialize it. */ |
809c7548 | 5760 | error = init_group(ofproto, gm, &ofgroup); |
7395c052 | 5761 | if (error) { |
809c7548 | 5762 | return error; |
7395c052 NZ |
5763 | } |
5764 | ||
5765 | /* We wrlock as late as possible to minimize the time we jam any other | |
5766 | * threads: No visible state changes before acquiring the lock. */ | |
5767 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
5768 | ||
5769 | if (ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) { | |
5770 | error = OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
5771 | goto unlock_out; | |
5772 | } | |
5773 | ||
7e9f8266 | 5774 | if (ofproto_group_exists__(ofproto, gm->group_id)) { |
7395c052 NZ |
5775 | error = OFPERR_OFPGMFC_GROUP_EXISTS; |
5776 | goto unlock_out; | |
5777 | } | |
5778 | ||
5779 | if (!error) { | |
5780 | /* Insert new group. */ | |
5781 | hmap_insert(&ofproto->groups, &ofgroup->hmap_node, | |
5782 | hash_int(ofgroup->group_id, 0)); | |
5783 | ofproto->n_groups[ofgroup->type]++; | |
5784 | ||
5785 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5786 | return error; | |
5787 | } | |
5788 | ||
5789 | unlock_out: | |
5790 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5791 | ofproto->ofproto_class->group_destruct(ofgroup); | |
7395c052 NZ |
5792 | ofputil_bucket_list_destroy(&ofgroup->buckets); |
5793 | ofproto->ofproto_class->group_dealloc(ofgroup); | |
5794 | ||
5795 | return error; | |
5796 | } | |
5797 | ||
6c5b90ce BP |
5798 | /* Implements OFPGC11_MODIFY. Returns 0 on success or an OpenFlow error code |
5799 | * on failure. | |
7395c052 | 5800 | * |
809c7548 RW |
5801 | * Note that the group is re-created and then replaces the old group in |
5802 | * ofproto's ofgroup hash map. Thus, the group is never altered while users of | |
6c5b90ce | 5803 | * the xlate module hold a pointer to the group. */ |
7395c052 NZ |
5804 | static enum ofperr |
5805 | modify_group(struct ofproto *ofproto, struct ofputil_group_mod *gm) | |
5806 | { | |
809c7548 | 5807 | struct ofgroup *ofgroup, *new_ofgroup, *retiring; |
7395c052 NZ |
5808 | enum ofperr error; |
5809 | ||
809c7548 RW |
5810 | error = init_group(ofproto, gm, &new_ofgroup); |
5811 | if (error) { | |
5812 | return error; | |
7395c052 NZ |
5813 | } |
5814 | ||
809c7548 | 5815 | retiring = new_ofgroup; |
7395c052 | 5816 | |
3fc3b679 AZ |
5817 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); |
5818 | if (!ofproto_group_lookup__(ofproto, gm->group_id, &ofgroup)) { | |
7395c052 | 5819 | error = OFPERR_OFPGMFC_UNKNOWN_GROUP; |
809c7548 | 5820 | goto out; |
7395c052 | 5821 | } |
809c7548 RW |
5822 | |
5823 | /* Ofproto's group write lock is held now. */ | |
7395c052 NZ |
5824 | if (ofgroup->type != gm->type |
5825 | && ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) { | |
5826 | error = OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
809c7548 | 5827 | goto out; |
7395c052 NZ |
5828 | } |
5829 | ||
809c7548 | 5830 | /* The group creation time does not change during modification. */ |
eaf004bd AZ |
5831 | *CONST_CAST(long long int *, &(new_ofgroup->created)) = ofgroup->created; |
5832 | *CONST_CAST(long long int *, &(new_ofgroup->modified)) = time_msec(); | |
7395c052 | 5833 | |
809c7548 RW |
5834 | error = ofproto->ofproto_class->group_modify(new_ofgroup); |
5835 | if (error) { | |
5836 | goto out; | |
5837 | } | |
7395c052 | 5838 | |
809c7548 RW |
5839 | retiring = ofgroup; |
5840 | /* Replace ofgroup in ofproto's groups hash map with new_ofgroup. */ | |
5841 | hmap_remove(&ofproto->groups, &ofgroup->hmap_node); | |
5842 | hmap_insert(&ofproto->groups, &new_ofgroup->hmap_node, | |
5843 | hash_int(new_ofgroup->group_id, 0)); | |
5844 | if (ofgroup->type != new_ofgroup->type) { | |
5845 | ofproto->n_groups[ofgroup->type]--; | |
5846 | ofproto->n_groups[new_ofgroup->type]++; | |
7395c052 NZ |
5847 | } |
5848 | ||
809c7548 RW |
5849 | out: |
5850 | ofproto_group_unref(retiring); | |
7395c052 | 5851 | ovs_rwlock_unlock(&ofproto->groups_rwlock); |
7395c052 NZ |
5852 | return error; |
5853 | } | |
5854 | ||
5855 | static void | |
5856 | delete_group__(struct ofproto *ofproto, struct ofgroup *ofgroup) | |
5857 | OVS_RELEASES(ofproto->groups_rwlock) | |
5858 | { | |
276f6518 SH |
5859 | struct match match; |
5860 | struct ofputil_flow_mod fm; | |
5861 | ||
5862 | /* Delete all flow entries containing this group in a group action */ | |
5863 | match_init_catchall(&match); | |
5864 | flow_mod_init(&fm, &match, 0, NULL, 0, OFPFC_DELETE); | |
cc40d06b | 5865 | fm.delete_reason = OFPRR_GROUP_DELETE; |
276f6518 | 5866 | fm.out_group = ofgroup->group_id; |
baae3d02 | 5867 | handle_flow_mod__(ofproto, &fm, NULL); |
276f6518 | 5868 | |
7395c052 NZ |
5869 | hmap_remove(&ofproto->groups, &ofgroup->hmap_node); |
5870 | /* No-one can find this group any more. */ | |
5871 | ofproto->n_groups[ofgroup->type]--; | |
5872 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
809c7548 | 5873 | ofproto_group_unref(ofgroup); |
7395c052 NZ |
5874 | } |
5875 | ||
6c5b90ce | 5876 | /* Implements OFPGC11_DELETE. */ |
7395c052 NZ |
5877 | static void |
5878 | delete_group(struct ofproto *ofproto, uint32_t group_id) | |
5879 | { | |
5880 | struct ofgroup *ofgroup; | |
5881 | ||
5882 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
5883 | if (group_id == OFPG_ALL) { | |
5884 | for (;;) { | |
5885 | struct hmap_node *node = hmap_first(&ofproto->groups); | |
5886 | if (!node) { | |
5887 | break; | |
5888 | } | |
5889 | ofgroup = CONTAINER_OF(node, struct ofgroup, hmap_node); | |
5890 | delete_group__(ofproto, ofgroup); | |
5891 | /* Lock for each node separately, so that we will not jam the | |
5892 | * other threads for too long time. */ | |
5893 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
5894 | } | |
5895 | } else { | |
5896 | HMAP_FOR_EACH_IN_BUCKET (ofgroup, hmap_node, | |
5897 | hash_int(group_id, 0), &ofproto->groups) { | |
5898 | if (ofgroup->group_id == group_id) { | |
5899 | delete_group__(ofproto, ofgroup); | |
5900 | return; | |
5901 | } | |
5902 | } | |
5903 | } | |
5904 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5905 | } | |
5906 | ||
5907 | static enum ofperr | |
5908 | handle_group_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
5909 | { | |
5910 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5911 | struct ofputil_group_mod gm; | |
5912 | enum ofperr error; | |
5913 | ||
5914 | error = reject_slave_controller(ofconn); | |
5915 | if (error) { | |
5916 | return error; | |
5917 | } | |
5918 | ||
5919 | error = ofputil_decode_group_mod(oh, &gm); | |
5920 | if (error) { | |
5921 | return error; | |
5922 | } | |
5923 | ||
5924 | switch (gm.command) { | |
5925 | case OFPGC11_ADD: | |
5926 | return add_group(ofproto, &gm); | |
5927 | ||
5928 | case OFPGC11_MODIFY: | |
5929 | return modify_group(ofproto, &gm); | |
5930 | ||
5931 | case OFPGC11_DELETE: | |
5932 | delete_group(ofproto, gm.group_id); | |
5933 | return 0; | |
5934 | ||
5935 | default: | |
5936 | if (gm.command > OFPGC11_DELETE) { | |
5937 | VLOG_WARN_RL(&rl, "%s: Invalid group_mod command type %d", | |
5938 | ofproto->name, gm.command); | |
5939 | } | |
5940 | return OFPERR_OFPGMFC_BAD_COMMAND; | |
5941 | } | |
5942 | } | |
5943 | ||
3c1bb396 BP |
5944 | enum ofputil_table_miss |
5945 | ofproto_table_get_miss_config(const struct ofproto *ofproto, uint8_t table_id) | |
6d328fa2 | 5946 | { |
3c1bb396 | 5947 | enum ofputil_table_miss value; |
afcea9ea JR |
5948 | |
5949 | atomic_read_relaxed(&ofproto->tables[table_id].miss_config, &value); | |
3c1bb396 | 5950 | return value; |
6d328fa2 SH |
5951 | } |
5952 | ||
67761761 SH |
5953 | static enum ofperr |
5954 | table_mod(struct ofproto *ofproto, const struct ofputil_table_mod *tm) | |
5955 | { | |
3c1bb396 | 5956 | if (!check_table_id(ofproto, tm->table_id)) { |
67761761 | 5957 | return OFPERR_OFPTMFC_BAD_TABLE; |
3c1bb396 BP |
5958 | } else if (tm->miss_config != OFPUTIL_TABLE_MISS_DEFAULT) { |
5959 | if (tm->table_id == OFPTT_ALL) { | |
5960 | int i; | |
5961 | for (i = 0; i < ofproto->n_tables; i++) { | |
afcea9ea JR |
5962 | atomic_store_relaxed(&ofproto->tables[i].miss_config, |
5963 | tm->miss_config); | |
3c1bb396 BP |
5964 | } |
5965 | } else { | |
afcea9ea JR |
5966 | atomic_store_relaxed(&ofproto->tables[tm->table_id].miss_config, |
5967 | tm->miss_config); | |
3c1bb396 | 5968 | } |
67761761 | 5969 | } |
67761761 SH |
5970 | return 0; |
5971 | } | |
5972 | ||
918f2b82 AZ |
5973 | static enum ofperr |
5974 | handle_table_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
5975 | { | |
67761761 | 5976 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
918f2b82 AZ |
5977 | struct ofputil_table_mod tm; |
5978 | enum ofperr error; | |
5979 | ||
5980 | error = reject_slave_controller(ofconn); | |
5981 | if (error) { | |
5982 | return error; | |
5983 | } | |
5984 | ||
5985 | error = ofputil_decode_table_mod(oh, &tm); | |
5986 | if (error) { | |
5987 | return error; | |
5988 | } | |
5989 | ||
67761761 | 5990 | return table_mod(ofproto, &tm); |
918f2b82 AZ |
5991 | } |
5992 | ||
777af88d AC |
5993 | static enum ofperr |
5994 | handle_bundle_control(struct ofconn *ofconn, const struct ofp_header *oh) | |
5995 | { | |
5996 | enum ofperr error; | |
5997 | struct ofputil_bundle_ctrl_msg bctrl; | |
5998 | struct ofpbuf *buf; | |
5999 | struct ofputil_bundle_ctrl_msg reply; | |
6000 | ||
6001 | error = ofputil_decode_bundle_ctrl(oh, &bctrl); | |
6002 | if (error) { | |
6003 | return error; | |
6004 | } | |
6005 | reply.flags = 0; | |
6006 | reply.bundle_id = bctrl.bundle_id; | |
6007 | ||
6008 | switch (bctrl.type) { | |
6009 | case OFPBCT_OPEN_REQUEST: | |
6010 | error = ofp_bundle_open(ofconn, bctrl.bundle_id, bctrl.flags); | |
6011 | reply.type = OFPBCT_OPEN_REPLY; | |
6012 | break; | |
6013 | case OFPBCT_CLOSE_REQUEST: | |
6014 | error = ofp_bundle_close(ofconn, bctrl.bundle_id, bctrl.flags); | |
6015 | reply.type = OFPBCT_CLOSE_REPLY;; | |
6016 | break; | |
6017 | case OFPBCT_COMMIT_REQUEST: | |
6018 | error = ofp_bundle_commit(ofconn, bctrl.bundle_id, bctrl.flags); | |
6019 | reply.type = OFPBCT_COMMIT_REPLY; | |
6020 | break; | |
6021 | case OFPBCT_DISCARD_REQUEST: | |
6022 | error = ofp_bundle_discard(ofconn, bctrl.bundle_id); | |
6023 | reply.type = OFPBCT_DISCARD_REPLY; | |
6024 | break; | |
6025 | ||
6026 | case OFPBCT_OPEN_REPLY: | |
6027 | case OFPBCT_CLOSE_REPLY: | |
6028 | case OFPBCT_COMMIT_REPLY: | |
6029 | case OFPBCT_DISCARD_REPLY: | |
6030 | return OFPERR_OFPBFC_BAD_TYPE; | |
6031 | break; | |
6032 | } | |
6033 | ||
6034 | if (!error) { | |
6035 | buf = ofputil_encode_bundle_ctrl_reply(oh, &reply); | |
6036 | ofconn_send_reply(ofconn, buf); | |
6037 | } | |
6038 | return error; | |
6039 | } | |
6040 | ||
6041 | ||
6042 | static enum ofperr | |
6043 | handle_bundle_add(struct ofconn *ofconn, const struct ofp_header *oh) | |
6044 | { | |
6045 | enum ofperr error; | |
6046 | struct ofputil_bundle_add_msg badd; | |
6047 | ||
6048 | error = ofputil_decode_bundle_add(oh, &badd); | |
6049 | if (error) { | |
6050 | return error; | |
6051 | } | |
6052 | ||
6053 | return ofp_bundle_add_message(ofconn, &badd); | |
6054 | } | |
6055 | ||
90bf1e07 | 6056 | static enum ofperr |
d1e2cf21 | 6057 | handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg) |
15aaf599 | 6058 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 6059 | { |
1f317cb5 | 6060 | const struct ofp_header *oh = ofpbuf_data(msg); |
982697a4 | 6061 | enum ofptype type; |
90bf1e07 | 6062 | enum ofperr error; |
064af421 | 6063 | |
982697a4 | 6064 | error = ofptype_decode(&type, oh); |
d1e2cf21 BP |
6065 | if (error) { |
6066 | return error; | |
6067 | } | |
ff3c2c63 YT |
6068 | if (oh->version >= OFP13_VERSION && ofpmsg_is_stat_request(oh) |
6069 | && ofpmp_more(oh)) { | |
6070 | /* We have no buffer implementation for multipart requests. | |
6071 | * Report overflow for requests which consists of multiple | |
6072 | * messages. */ | |
6073 | return OFPERR_OFPBRC_MULTIPART_BUFFER_OVERFLOW; | |
6074 | } | |
064af421 | 6075 | |
982697a4 | 6076 | switch (type) { |
d1e2cf21 | 6077 | /* OpenFlow requests. */ |
982697a4 | 6078 | case OFPTYPE_ECHO_REQUEST: |
d1e2cf21 | 6079 | return handle_echo_request(ofconn, oh); |
064af421 | 6080 | |
982697a4 | 6081 | case OFPTYPE_FEATURES_REQUEST: |
d1e2cf21 | 6082 | return handle_features_request(ofconn, oh); |
064af421 | 6083 | |
982697a4 | 6084 | case OFPTYPE_GET_CONFIG_REQUEST: |
d1e2cf21 | 6085 | return handle_get_config_request(ofconn, oh); |
064af421 | 6086 | |
982697a4 BP |
6087 | case OFPTYPE_SET_CONFIG: |
6088 | return handle_set_config(ofconn, oh); | |
064af421 | 6089 | |
982697a4 BP |
6090 | case OFPTYPE_PACKET_OUT: |
6091 | return handle_packet_out(ofconn, oh); | |
064af421 | 6092 | |
982697a4 | 6093 | case OFPTYPE_PORT_MOD: |
d1e2cf21 | 6094 | return handle_port_mod(ofconn, oh); |
064af421 | 6095 | |
982697a4 | 6096 | case OFPTYPE_FLOW_MOD: |
2e4f5fcf | 6097 | return handle_flow_mod(ofconn, oh); |
064af421 | 6098 | |
7395c052 NZ |
6099 | case OFPTYPE_GROUP_MOD: |
6100 | return handle_group_mod(ofconn, oh); | |
6101 | ||
918f2b82 AZ |
6102 | case OFPTYPE_TABLE_MOD: |
6103 | return handle_table_mod(ofconn, oh); | |
6104 | ||
9cae45dc JR |
6105 | case OFPTYPE_METER_MOD: |
6106 | return handle_meter_mod(ofconn, oh); | |
6107 | ||
982697a4 | 6108 | case OFPTYPE_BARRIER_REQUEST: |
d1e2cf21 | 6109 | return handle_barrier_request(ofconn, oh); |
064af421 | 6110 | |
6ea4776b JR |
6111 | case OFPTYPE_ROLE_REQUEST: |
6112 | return handle_role_request(ofconn, oh); | |
6113 | ||
d1e2cf21 | 6114 | /* OpenFlow replies. */ |
982697a4 | 6115 | case OFPTYPE_ECHO_REPLY: |
d1e2cf21 | 6116 | return 0; |
246e61ea | 6117 | |
d1e2cf21 | 6118 | /* Nicira extension requests. */ |
982697a4 | 6119 | case OFPTYPE_FLOW_MOD_TABLE_ID: |
6c1491fb | 6120 | return handle_nxt_flow_mod_table_id(ofconn, oh); |
d1e2cf21 | 6121 | |
982697a4 | 6122 | case OFPTYPE_SET_FLOW_FORMAT: |
d1e2cf21 BP |
6123 | return handle_nxt_set_flow_format(ofconn, oh); |
6124 | ||
982697a4 | 6125 | case OFPTYPE_SET_PACKET_IN_FORMAT: |
54834960 EJ |
6126 | return handle_nxt_set_packet_in_format(ofconn, oh); |
6127 | ||
982697a4 | 6128 | case OFPTYPE_SET_CONTROLLER_ID: |
a7349929 BP |
6129 | return handle_nxt_set_controller_id(ofconn, oh); |
6130 | ||
982697a4 | 6131 | case OFPTYPE_FLOW_AGE: |
f27f2134 BP |
6132 | /* Nothing to do. */ |
6133 | return 0; | |
6134 | ||
982697a4 | 6135 | case OFPTYPE_FLOW_MONITOR_CANCEL: |
2b07c8b1 BP |
6136 | return handle_flow_monitor_cancel(ofconn, oh); |
6137 | ||
982697a4 | 6138 | case OFPTYPE_SET_ASYNC_CONFIG: |
80d5aefd BP |
6139 | return handle_nxt_set_async_config(ofconn, oh); |
6140 | ||
c423b3b3 AC |
6141 | case OFPTYPE_GET_ASYNC_REQUEST: |
6142 | return handle_nxt_get_async_request(ofconn, oh); | |
6143 | ||
349adfb2 | 6144 | /* Statistics requests. */ |
982697a4 BP |
6145 | case OFPTYPE_DESC_STATS_REQUEST: |
6146 | return handle_desc_stats_request(ofconn, oh); | |
6147 | ||
6148 | case OFPTYPE_FLOW_STATS_REQUEST: | |
6149 | return handle_flow_stats_request(ofconn, oh); | |
6150 | ||
6151 | case OFPTYPE_AGGREGATE_STATS_REQUEST: | |
6152 | return handle_aggregate_stats_request(ofconn, oh); | |
6153 | ||
6154 | case OFPTYPE_TABLE_STATS_REQUEST: | |
6155 | return handle_table_stats_request(ofconn, oh); | |
6156 | ||
3c4e10fb BP |
6157 | case OFPTYPE_TABLE_FEATURES_STATS_REQUEST: |
6158 | return handle_table_features_request(ofconn, oh); | |
6159 | ||
982697a4 BP |
6160 | case OFPTYPE_PORT_STATS_REQUEST: |
6161 | return handle_port_stats_request(ofconn, oh); | |
6162 | ||
6163 | case OFPTYPE_QUEUE_STATS_REQUEST: | |
6164 | return handle_queue_stats_request(ofconn, oh); | |
6165 | ||
6166 | case OFPTYPE_PORT_DESC_STATS_REQUEST: | |
6167 | return handle_port_desc_stats_request(ofconn, oh); | |
6168 | ||
6169 | case OFPTYPE_FLOW_MONITOR_STATS_REQUEST: | |
6170 | return handle_flow_monitor_request(ofconn, oh); | |
6171 | ||
261bd854 BP |
6172 | case OFPTYPE_METER_STATS_REQUEST: |
6173 | case OFPTYPE_METER_CONFIG_STATS_REQUEST: | |
9cae45dc JR |
6174 | return handle_meter_request(ofconn, oh, type); |
6175 | ||
261bd854 | 6176 | case OFPTYPE_METER_FEATURES_STATS_REQUEST: |
9cae45dc JR |
6177 | return handle_meter_features_request(ofconn, oh); |
6178 | ||
261bd854 | 6179 | case OFPTYPE_GROUP_STATS_REQUEST: |
7395c052 NZ |
6180 | return handle_group_stats_request(ofconn, oh); |
6181 | ||
261bd854 | 6182 | case OFPTYPE_GROUP_DESC_STATS_REQUEST: |
7395c052 NZ |
6183 | return handle_group_desc_stats_request(ofconn, oh); |
6184 | ||
261bd854 | 6185 | case OFPTYPE_GROUP_FEATURES_STATS_REQUEST: |
7395c052 NZ |
6186 | return handle_group_features_stats_request(ofconn, oh); |
6187 | ||
7395c052 | 6188 | case OFPTYPE_QUEUE_GET_CONFIG_REQUEST: |
e8f9a7bb | 6189 | return handle_queue_get_config_request(ofconn, oh); |
2e1ae200 | 6190 | |
777af88d AC |
6191 | case OFPTYPE_BUNDLE_CONTROL: |
6192 | return handle_bundle_control(ofconn, oh); | |
6193 | ||
6194 | case OFPTYPE_BUNDLE_ADD_MESSAGE: | |
6195 | return handle_bundle_add(ofconn, oh); | |
6196 | ||
982697a4 BP |
6197 | case OFPTYPE_HELLO: |
6198 | case OFPTYPE_ERROR: | |
6199 | case OFPTYPE_FEATURES_REPLY: | |
6200 | case OFPTYPE_GET_CONFIG_REPLY: | |
6201 | case OFPTYPE_PACKET_IN: | |
6202 | case OFPTYPE_FLOW_REMOVED: | |
6203 | case OFPTYPE_PORT_STATUS: | |
6204 | case OFPTYPE_BARRIER_REPLY: | |
c545d38d | 6205 | case OFPTYPE_QUEUE_GET_CONFIG_REPLY: |
982697a4 BP |
6206 | case OFPTYPE_DESC_STATS_REPLY: |
6207 | case OFPTYPE_FLOW_STATS_REPLY: | |
6208 | case OFPTYPE_QUEUE_STATS_REPLY: | |
6209 | case OFPTYPE_PORT_STATS_REPLY: | |
6210 | case OFPTYPE_TABLE_STATS_REPLY: | |
6211 | case OFPTYPE_AGGREGATE_STATS_REPLY: | |
6212 | case OFPTYPE_PORT_DESC_STATS_REPLY: | |
6213 | case OFPTYPE_ROLE_REPLY: | |
6214 | case OFPTYPE_FLOW_MONITOR_PAUSED: | |
6215 | case OFPTYPE_FLOW_MONITOR_RESUMED: | |
6216 | case OFPTYPE_FLOW_MONITOR_STATS_REPLY: | |
2e1ae200 | 6217 | case OFPTYPE_GET_ASYNC_REPLY: |
261bd854 BP |
6218 | case OFPTYPE_GROUP_STATS_REPLY: |
6219 | case OFPTYPE_GROUP_DESC_STATS_REPLY: | |
6220 | case OFPTYPE_GROUP_FEATURES_STATS_REPLY: | |
6221 | case OFPTYPE_METER_STATS_REPLY: | |
6222 | case OFPTYPE_METER_CONFIG_STATS_REPLY: | |
6223 | case OFPTYPE_METER_FEATURES_STATS_REPLY: | |
6224 | case OFPTYPE_TABLE_FEATURES_STATS_REPLY: | |
252f3411 | 6225 | case OFPTYPE_ROLE_STATUS: |
064af421 | 6226 | default: |
76ec08e0 YT |
6227 | if (ofpmsg_is_stat_request(oh)) { |
6228 | return OFPERR_OFPBRC_BAD_STAT; | |
6229 | } else { | |
6230 | return OFPERR_OFPBRC_BAD_TYPE; | |
6231 | } | |
064af421 | 6232 | } |
d1e2cf21 | 6233 | } |
064af421 | 6234 | |
b20f4073 | 6235 | static void |
e03248b7 | 6236 | handle_openflow(struct ofconn *ofconn, const struct ofpbuf *ofp_msg) |
15aaf599 | 6237 | OVS_EXCLUDED(ofproto_mutex) |
d1e2cf21 BP |
6238 | { |
6239 | int error = handle_openflow__(ofconn, ofp_msg); | |
b20f4073 | 6240 | if (error) { |
1f317cb5 | 6241 | ofconn_send_error(ofconn, ofpbuf_data(ofp_msg), error); |
064af421 | 6242 | } |
d1e2cf21 | 6243 | COVERAGE_INC(ofproto_recv_openflow); |
7ee20df1 BP |
6244 | } |
6245 | \f | |
6246 | /* Asynchronous operations. */ | |
6247 | ||
834fe5cb BP |
6248 | static enum ofperr |
6249 | send_buffered_packet(struct ofconn *ofconn, uint32_t buffer_id, | |
6250 | struct rule *rule) | |
15aaf599 | 6251 | OVS_REQUIRES(ofproto_mutex) |
7ee20df1 | 6252 | { |
834fe5cb BP |
6253 | enum ofperr error = 0; |
6254 | if (ofconn && buffer_id != UINT32_MAX) { | |
6255 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
6256 | struct ofpbuf *packet; | |
6257 | ofp_port_t in_port; | |
b277c7cc | 6258 | |
834fe5cb BP |
6259 | error = ofconn_pktbuf_retrieve(ofconn, buffer_id, &packet, &in_port); |
6260 | if (packet) { | |
6261 | struct rule_execute *re; | |
b277c7cc | 6262 | |
834fe5cb | 6263 | ofproto_rule_ref(rule); |
b277c7cc | 6264 | |
834fe5cb BP |
6265 | re = xmalloc(sizeof *re); |
6266 | re->rule = rule; | |
6267 | re->in_port = in_port; | |
6268 | re->packet = packet; | |
b277c7cc | 6269 | |
834fe5cb BP |
6270 | if (!guarded_list_push_back(&ofproto->rule_executes, |
6271 | &re->list_node, 1024)) { | |
a2143702 | 6272 | ofproto_rule_unref(rule); |
834fe5cb BP |
6273 | ofpbuf_delete(re->packet); |
6274 | free(re); | |
e615b0a3 | 6275 | } |
af822017 | 6276 | } |
7ee20df1 | 6277 | } |
834fe5cb | 6278 | return error; |
7ee20df1 | 6279 | } |
064af421 | 6280 | \f |
064af421 | 6281 | static uint64_t |
fa60c019 | 6282 | pick_datapath_id(const struct ofproto *ofproto) |
064af421 | 6283 | { |
fa60c019 | 6284 | const struct ofport *port; |
064af421 | 6285 | |
abe529af | 6286 | port = ofproto_get_port(ofproto, OFPP_LOCAL); |
fa60c019 BP |
6287 | if (port) { |
6288 | uint8_t ea[ETH_ADDR_LEN]; | |
6289 | int error; | |
6290 | ||
6291 | error = netdev_get_etheraddr(port->netdev, ea); | |
064af421 BP |
6292 | if (!error) { |
6293 | return eth_addr_to_uint64(ea); | |
6294 | } | |
fbfa2911 BP |
6295 | VLOG_WARN("%s: could not get MAC address for %s (%s)", |
6296 | ofproto->name, netdev_get_name(port->netdev), | |
10a89ef0 | 6297 | ovs_strerror(error)); |
064af421 | 6298 | } |
fa60c019 | 6299 | return ofproto->fallback_dpid; |
064af421 BP |
6300 | } |
6301 | ||
6302 | static uint64_t | |
6303 | pick_fallback_dpid(void) | |
6304 | { | |
6305 | uint8_t ea[ETH_ADDR_LEN]; | |
70150daf | 6306 | eth_addr_nicira_random(ea); |
064af421 BP |
6307 | return eth_addr_to_uint64(ea); |
6308 | } | |
6309 | \f | |
254750ce BP |
6310 | /* Table overflow policy. */ |
6311 | ||
ad3efdcb EJ |
6312 | /* Chooses and updates 'rulep' with a rule to evict from 'table'. Sets 'rulep' |
6313 | * to NULL if the table is not configured to evict rules or if the table | |
6314 | * contains no evictable rules. (Rules with a readlock on their evict rwlock, | |
6315 | * or with no timeouts are not evictable.) */ | |
6316 | static bool | |
6317 | choose_rule_to_evict(struct oftable *table, struct rule **rulep) | |
15aaf599 | 6318 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6319 | { |
6320 | struct eviction_group *evg; | |
6321 | ||
ad3efdcb | 6322 | *rulep = NULL; |
254750ce | 6323 | if (!table->eviction_fields) { |
ad3efdcb | 6324 | return false; |
254750ce BP |
6325 | } |
6326 | ||
6327 | /* In the common case, the outer and inner loops here will each be entered | |
6328 | * exactly once: | |
6329 | * | |
6330 | * - The inner loop normally "return"s in its first iteration. If the | |
6331 | * eviction group has any evictable rules, then it always returns in | |
6332 | * some iteration. | |
6333 | * | |
6334 | * - The outer loop only iterates more than once if the largest eviction | |
6335 | * group has no evictable rules. | |
6336 | * | |
6337 | * - The outer loop can exit only if table's 'max_flows' is all filled up | |
afe2143d | 6338 | * by unevictable rules. */ |
254750ce BP |
6339 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { |
6340 | struct rule *rule; | |
6341 | ||
6342 | HEAP_FOR_EACH (rule, evg_node, &evg->rules) { | |
15aaf599 BP |
6343 | *rulep = rule; |
6344 | return true; | |
254750ce BP |
6345 | } |
6346 | } | |
6347 | ||
ad3efdcb | 6348 | return false; |
254750ce | 6349 | } |
254750ce BP |
6350 | \f |
6351 | /* Eviction groups. */ | |
6352 | ||
6353 | /* Returns the priority to use for an eviction_group that contains 'n_rules' | |
6354 | * rules. The priority contains low-order random bits to ensure that eviction | |
6355 | * groups with the same number of rules are prioritized randomly. */ | |
6356 | static uint32_t | |
6357 | eviction_group_priority(size_t n_rules) | |
6358 | { | |
6359 | uint16_t size = MIN(UINT16_MAX, n_rules); | |
6360 | return (size << 16) | random_uint16(); | |
6361 | } | |
6362 | ||
6363 | /* Updates 'evg', an eviction_group within 'table', following a change that | |
6364 | * adds or removes rules in 'evg'. */ | |
6365 | static void | |
6366 | eviction_group_resized(struct oftable *table, struct eviction_group *evg) | |
15aaf599 | 6367 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6368 | { |
6369 | heap_change(&table->eviction_groups_by_size, &evg->size_node, | |
6370 | eviction_group_priority(heap_count(&evg->rules))); | |
6371 | } | |
6372 | ||
6373 | /* Destroys 'evg', an eviction_group within 'table': | |
6374 | * | |
6375 | * - Removes all the rules, if any, from 'evg'. (It doesn't destroy the | |
6376 | * rules themselves, just removes them from the eviction group.) | |
6377 | * | |
6378 | * - Removes 'evg' from 'table'. | |
6379 | * | |
6380 | * - Frees 'evg'. */ | |
6381 | static void | |
6382 | eviction_group_destroy(struct oftable *table, struct eviction_group *evg) | |
15aaf599 | 6383 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6384 | { |
6385 | while (!heap_is_empty(&evg->rules)) { | |
6386 | struct rule *rule; | |
6387 | ||
6388 | rule = CONTAINER_OF(heap_pop(&evg->rules), struct rule, evg_node); | |
6389 | rule->eviction_group = NULL; | |
6390 | } | |
6391 | hmap_remove(&table->eviction_groups_by_id, &evg->id_node); | |
6392 | heap_remove(&table->eviction_groups_by_size, &evg->size_node); | |
6393 | heap_destroy(&evg->rules); | |
6394 | free(evg); | |
6395 | } | |
6396 | ||
6397 | /* Removes 'rule' from its eviction group, if any. */ | |
6398 | static void | |
6399 | eviction_group_remove_rule(struct rule *rule) | |
15aaf599 | 6400 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6401 | { |
6402 | if (rule->eviction_group) { | |
6403 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
6404 | struct eviction_group *evg = rule->eviction_group; | |
6405 | ||
6406 | rule->eviction_group = NULL; | |
6407 | heap_remove(&evg->rules, &rule->evg_node); | |
6408 | if (heap_is_empty(&evg->rules)) { | |
6409 | eviction_group_destroy(table, evg); | |
6410 | } else { | |
6411 | eviction_group_resized(table, evg); | |
6412 | } | |
6413 | } | |
6414 | } | |
6415 | ||
6416 | /* Hashes the 'rule''s values for the eviction_fields of 'rule''s table, and | |
6417 | * returns the hash value. */ | |
6418 | static uint32_t | |
6419 | eviction_group_hash_rule(struct rule *rule) | |
15aaf599 | 6420 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6421 | { |
6422 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
6423 | const struct mf_subfield *sf; | |
5cb7a798 | 6424 | struct flow flow; |
254750ce BP |
6425 | uint32_t hash; |
6426 | ||
6427 | hash = table->eviction_group_id_basis; | |
5cb7a798 | 6428 | miniflow_expand(&rule->cr.match.flow, &flow); |
254750ce BP |
6429 | for (sf = table->eviction_fields; |
6430 | sf < &table->eviction_fields[table->n_eviction_fields]; | |
6431 | sf++) | |
6432 | { | |
5cb7a798 | 6433 | if (mf_are_prereqs_ok(sf->field, &flow)) { |
254750ce BP |
6434 | union mf_value value; |
6435 | ||
5cb7a798 | 6436 | mf_get_value(sf->field, &flow, &value); |
254750ce BP |
6437 | if (sf->ofs) { |
6438 | bitwise_zero(&value, sf->field->n_bytes, 0, sf->ofs); | |
6439 | } | |
6440 | if (sf->ofs + sf->n_bits < sf->field->n_bytes * 8) { | |
6441 | unsigned int start = sf->ofs + sf->n_bits; | |
6442 | bitwise_zero(&value, sf->field->n_bytes, start, | |
6443 | sf->field->n_bytes * 8 - start); | |
6444 | } | |
6445 | hash = hash_bytes(&value, sf->field->n_bytes, hash); | |
6446 | } else { | |
6447 | hash = hash_int(hash, 0); | |
6448 | } | |
6449 | } | |
6450 | ||
6451 | return hash; | |
6452 | } | |
6453 | ||
6454 | /* Returns an eviction group within 'table' with the given 'id', creating one | |
6455 | * if necessary. */ | |
6456 | static struct eviction_group * | |
6457 | eviction_group_find(struct oftable *table, uint32_t id) | |
15aaf599 | 6458 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6459 | { |
6460 | struct eviction_group *evg; | |
6461 | ||
6462 | HMAP_FOR_EACH_WITH_HASH (evg, id_node, id, &table->eviction_groups_by_id) { | |
6463 | return evg; | |
6464 | } | |
6465 | ||
6466 | evg = xmalloc(sizeof *evg); | |
6467 | hmap_insert(&table->eviction_groups_by_id, &evg->id_node, id); | |
6468 | heap_insert(&table->eviction_groups_by_size, &evg->size_node, | |
6469 | eviction_group_priority(0)); | |
6470 | heap_init(&evg->rules); | |
6471 | ||
6472 | return evg; | |
6473 | } | |
6474 | ||
6475 | /* Returns an eviction priority for 'rule'. The return value should be | |
6476 | * interpreted so that higher priorities make a rule more attractive candidates | |
dc437090 JR |
6477 | * for eviction. |
6478 | * Called only if have a timeout. */ | |
254750ce | 6479 | static uint32_t |
dc437090 | 6480 | rule_eviction_priority(struct ofproto *ofproto, struct rule *rule) |
15aaf599 | 6481 | OVS_REQUIRES(ofproto_mutex) |
254750ce | 6482 | { |
dc437090 JR |
6483 | long long int expiration = LLONG_MAX; |
6484 | long long int modified; | |
254750ce BP |
6485 | uint32_t expiration_offset; |
6486 | ||
dc437090 | 6487 | /* 'modified' needs protection even when we hold 'ofproto_mutex'. */ |
d10976b7 | 6488 | ovs_mutex_lock(&rule->mutex); |
dc437090 | 6489 | modified = rule->modified; |
d10976b7 | 6490 | ovs_mutex_unlock(&rule->mutex); |
dc437090 JR |
6491 | |
6492 | if (rule->hard_timeout) { | |
6493 | expiration = modified + rule->hard_timeout * 1000; | |
6494 | } | |
6495 | if (rule->idle_timeout) { | |
6496 | uint64_t packets, bytes; | |
6497 | long long int used; | |
6498 | long long int idle_expiration; | |
6499 | ||
6500 | ofproto->ofproto_class->rule_get_stats(rule, &packets, &bytes, &used); | |
6501 | idle_expiration = used + rule->idle_timeout * 1000; | |
6502 | expiration = MIN(expiration, idle_expiration); | |
6503 | } | |
6504 | ||
254750ce BP |
6505 | if (expiration == LLONG_MAX) { |
6506 | return 0; | |
6507 | } | |
6508 | ||
6509 | /* Calculate the time of expiration as a number of (approximate) seconds | |
6510 | * after program startup. | |
6511 | * | |
6512 | * This should work OK for program runs that last UINT32_MAX seconds or | |
6513 | * less. Therefore, please restart OVS at least once every 136 years. */ | |
6514 | expiration_offset = (expiration >> 10) - (time_boot_msec() >> 10); | |
6515 | ||
6516 | /* Invert the expiration offset because we're using a max-heap. */ | |
6517 | return UINT32_MAX - expiration_offset; | |
6518 | } | |
6519 | ||
6520 | /* Adds 'rule' to an appropriate eviction group for its oftable's | |
6521 | * configuration. Does nothing if 'rule''s oftable doesn't have eviction | |
6522 | * enabled, or if 'rule' is a permanent rule (one that will never expire on its | |
6523 | * own). | |
6524 | * | |
6525 | * The caller must ensure that 'rule' is not already in an eviction group. */ | |
6526 | static void | |
6527 | eviction_group_add_rule(struct rule *rule) | |
15aaf599 | 6528 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6529 | { |
6530 | struct ofproto *ofproto = rule->ofproto; | |
6531 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
a3779dbc | 6532 | bool has_timeout; |
254750ce | 6533 | |
dc437090 JR |
6534 | /* Timeouts may be modified only when holding 'ofproto_mutex'. We have it |
6535 | * so no additional protection is needed. */ | |
a3779dbc | 6536 | has_timeout = rule->hard_timeout || rule->idle_timeout; |
a3779dbc EJ |
6537 | |
6538 | if (table->eviction_fields && has_timeout) { | |
254750ce BP |
6539 | struct eviction_group *evg; |
6540 | ||
6541 | evg = eviction_group_find(table, eviction_group_hash_rule(rule)); | |
6542 | ||
6543 | rule->eviction_group = evg; | |
6544 | heap_insert(&evg->rules, &rule->evg_node, | |
dc437090 | 6545 | rule_eviction_priority(ofproto, rule)); |
254750ce BP |
6546 | eviction_group_resized(table, evg); |
6547 | } | |
6548 | } | |
6549 | \f | |
d0918789 BP |
6550 | /* oftables. */ |
6551 | ||
6552 | /* Initializes 'table'. */ | |
6553 | static void | |
6554 | oftable_init(struct oftable *table) | |
6555 | { | |
5c67e4af | 6556 | memset(table, 0, sizeof *table); |
476f36e8 | 6557 | classifier_init(&table->cls, flow_segment_u32s); |
ec1c5c7e | 6558 | table->max_flows = UINT_MAX; |
3c1bb396 | 6559 | atomic_init(&table->miss_config, OFPUTIL_TABLE_MISS_DEFAULT); |
f017d986 | 6560 | |
f017d986 JR |
6561 | classifier_set_prefix_fields(&table->cls, default_prefix_fields, |
6562 | ARRAY_SIZE(default_prefix_fields)); | |
d611866c SH |
6563 | |
6564 | atomic_init(&table->n_matched, 0); | |
6565 | atomic_init(&table->n_missed, 0); | |
d0918789 BP |
6566 | } |
6567 | ||
254750ce | 6568 | /* Destroys 'table', including its classifier and eviction groups. |
d0918789 BP |
6569 | * |
6570 | * The caller is responsible for freeing 'table' itself. */ | |
6571 | static void | |
6572 | oftable_destroy(struct oftable *table) | |
6573 | { | |
cb22974d | 6574 | ovs_assert(classifier_is_empty(&table->cls)); |
254750ce | 6575 | oftable_disable_eviction(table); |
d0918789 | 6576 | classifier_destroy(&table->cls); |
254750ce BP |
6577 | free(table->name); |
6578 | } | |
6579 | ||
6580 | /* Changes the name of 'table' to 'name'. If 'name' is NULL or the empty | |
6581 | * string, then 'table' will use its default name. | |
6582 | * | |
6583 | * This only affects the name exposed for a table exposed through the OpenFlow | |
6584 | * OFPST_TABLE (as printed by "ovs-ofctl dump-tables"). */ | |
6585 | static void | |
6586 | oftable_set_name(struct oftable *table, const char *name) | |
6587 | { | |
6588 | if (name && name[0]) { | |
6589 | int len = strnlen(name, OFP_MAX_TABLE_NAME_LEN); | |
6590 | if (!table->name || strncmp(name, table->name, len)) { | |
6591 | free(table->name); | |
6592 | table->name = xmemdup0(name, len); | |
6593 | } | |
6594 | } else { | |
6595 | free(table->name); | |
6596 | table->name = NULL; | |
6597 | } | |
6598 | } | |
6599 | ||
6600 | /* oftables support a choice of two policies when adding a rule would cause the | |
6601 | * number of flows in the table to exceed the configured maximum number: either | |
6602 | * they can refuse to add the new flow or they can evict some existing flow. | |
6603 | * This function configures the former policy on 'table'. */ | |
6604 | static void | |
6605 | oftable_disable_eviction(struct oftable *table) | |
15aaf599 | 6606 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6607 | { |
6608 | if (table->eviction_fields) { | |
6609 | struct eviction_group *evg, *next; | |
6610 | ||
6611 | HMAP_FOR_EACH_SAFE (evg, next, id_node, | |
6612 | &table->eviction_groups_by_id) { | |
6613 | eviction_group_destroy(table, evg); | |
6614 | } | |
6615 | hmap_destroy(&table->eviction_groups_by_id); | |
6616 | heap_destroy(&table->eviction_groups_by_size); | |
6617 | ||
6618 | free(table->eviction_fields); | |
6619 | table->eviction_fields = NULL; | |
6620 | table->n_eviction_fields = 0; | |
6621 | } | |
6622 | } | |
6623 | ||
6624 | /* oftables support a choice of two policies when adding a rule would cause the | |
6625 | * number of flows in the table to exceed the configured maximum number: either | |
6626 | * they can refuse to add the new flow or they can evict some existing flow. | |
6627 | * This function configures the latter policy on 'table', with fairness based | |
6628 | * on the values of the 'n_fields' fields specified in 'fields'. (Specifying | |
6629 | * 'n_fields' as 0 disables fairness.) */ | |
6630 | static void | |
6631 | oftable_enable_eviction(struct oftable *table, | |
6632 | const struct mf_subfield *fields, size_t n_fields) | |
15aaf599 | 6633 | OVS_REQUIRES(ofproto_mutex) |
254750ce | 6634 | { |
254750ce BP |
6635 | struct rule *rule; |
6636 | ||
6637 | if (table->eviction_fields | |
6638 | && n_fields == table->n_eviction_fields | |
6639 | && (!n_fields | |
6640 | || !memcmp(fields, table->eviction_fields, | |
6641 | n_fields * sizeof *fields))) { | |
6642 | /* No change. */ | |
6643 | return; | |
6644 | } | |
6645 | ||
6646 | oftable_disable_eviction(table); | |
6647 | ||
6648 | table->n_eviction_fields = n_fields; | |
6649 | table->eviction_fields = xmemdup(fields, n_fields * sizeof *fields); | |
6650 | ||
6651 | table->eviction_group_id_basis = random_uint32(); | |
6652 | hmap_init(&table->eviction_groups_by_id); | |
6653 | heap_init(&table->eviction_groups_by_size); | |
6654 | ||
5f0476ce | 6655 | CLS_FOR_EACH (rule, cr, &table->cls) { |
254750ce BP |
6656 | eviction_group_add_rule(rule); |
6657 | } | |
d0918789 BP |
6658 | } |
6659 | ||
6660 | /* Removes 'rule' from the oftable that contains it. */ | |
6661 | static void | |
8b81d1ef | 6662 | oftable_remove_rule__(struct ofproto *ofproto, struct rule *rule) |
15aaf599 | 6663 | OVS_REQUIRES(ofproto_mutex) |
d0918789 | 6664 | { |
8b81d1ef BP |
6665 | struct classifier *cls = &ofproto->tables[rule->table_id].cls; |
6666 | ||
49a0e0eb | 6667 | classifier_remove(cls, CONST_CAST(struct cls_rule *, &rule->cr)); |
2c916028 | 6668 | |
98eaac36 | 6669 | cookies_remove(ofproto, rule); |
2c916028 | 6670 | |
254750ce | 6671 | eviction_group_remove_rule(rule); |
e503cc19 SH |
6672 | if (!list_is_empty(&rule->expirable)) { |
6673 | list_remove(&rule->expirable); | |
6674 | } | |
9cae45dc JR |
6675 | if (!list_is_empty(&rule->meter_list_node)) { |
6676 | list_remove(&rule->meter_list_node); | |
51b50dfd | 6677 | list_init(&rule->meter_list_node); |
9cae45dc | 6678 | } |
d0918789 BP |
6679 | } |
6680 | ||
0b4f2078 EJ |
6681 | static void |
6682 | oftable_remove_rule(struct rule *rule) | |
15aaf599 | 6683 | OVS_REQUIRES(ofproto_mutex) |
0b4f2078 | 6684 | { |
8b81d1ef | 6685 | oftable_remove_rule__(rule->ofproto, rule); |
0b4f2078 | 6686 | } |
d0918789 | 6687 | \f |
abe529af | 6688 | /* unixctl commands. */ |
7aa697dd | 6689 | |
abe529af | 6690 | struct ofproto * |
2ac6bedd | 6691 | ofproto_lookup(const char *name) |
7aa697dd | 6692 | { |
2ac6bedd | 6693 | struct ofproto *ofproto; |
7aa697dd | 6694 | |
2ac6bedd BP |
6695 | HMAP_FOR_EACH_WITH_HASH (ofproto, hmap_node, hash_string(name, 0), |
6696 | &all_ofprotos) { | |
6697 | if (!strcmp(ofproto->name, name)) { | |
6698 | return ofproto; | |
6699 | } | |
7aa697dd | 6700 | } |
2ac6bedd | 6701 | return NULL; |
7aa697dd BP |
6702 | } |
6703 | ||
6704 | static void | |
0e15264f BP |
6705 | ofproto_unixctl_list(struct unixctl_conn *conn, int argc OVS_UNUSED, |
6706 | const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED) | |
7aa697dd | 6707 | { |
7aa697dd | 6708 | struct ofproto *ofproto; |
7aa697dd | 6709 | struct ds results; |
7aa697dd | 6710 | |
7aa697dd | 6711 | ds_init(&results); |
2ac6bedd BP |
6712 | HMAP_FOR_EACH (ofproto, hmap_node, &all_ofprotos) { |
6713 | ds_put_format(&results, "%s\n", ofproto->name); | |
7aa697dd | 6714 | } |
bde9f75d | 6715 | unixctl_command_reply(conn, ds_cstr(&results)); |
7aa697dd | 6716 | ds_destroy(&results); |
7aa697dd BP |
6717 | } |
6718 | ||
6719 | static void | |
6720 | ofproto_unixctl_init(void) | |
6721 | { | |
6722 | static bool registered; | |
6723 | if (registered) { | |
6724 | return; | |
6725 | } | |
6726 | registered = true; | |
6727 | ||
0e15264f BP |
6728 | unixctl_command_register("ofproto/list", "", 0, 0, |
6729 | ofproto_unixctl_list, NULL); | |
064af421 | 6730 | } |
52a90c29 BP |
6731 | \f |
6732 | /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.) | |
6733 | * | |
6734 | * This is deprecated. It is only for compatibility with broken device drivers | |
6735 | * in old versions of Linux that do not properly support VLANs when VLAN | |
6736 | * devices are not used. When broken device drivers are no longer in | |
6737 | * widespread use, we will delete these interfaces. */ | |
6738 | ||
6739 | /* Sets a 1-bit in the 4096-bit 'vlan_bitmap' for each VLAN ID that is matched | |
6740 | * (exactly) by an OpenFlow rule in 'ofproto'. */ | |
6741 | void | |
6742 | ofproto_get_vlan_usage(struct ofproto *ofproto, unsigned long int *vlan_bitmap) | |
6743 | { | |
ac4aa4c8 JR |
6744 | struct match match; |
6745 | struct cls_rule target; | |
d0918789 | 6746 | const struct oftable *oftable; |
52a90c29 | 6747 | |
ac4aa4c8 JR |
6748 | match_init_catchall(&match); |
6749 | match_set_vlan_vid_masked(&match, htons(VLAN_CFI), htons(VLAN_CFI)); | |
6750 | cls_rule_init(&target, &match, 0); | |
6751 | ||
52a90c29 BP |
6752 | free(ofproto->vlan_bitmap); |
6753 | ofproto->vlan_bitmap = bitmap_allocate(4096); | |
6754 | ofproto->vlans_changed = false; | |
6755 | ||
d0918789 | 6756 | OFPROTO_FOR_EACH_TABLE (oftable, ofproto) { |
ac4aa4c8 | 6757 | struct rule *rule; |
52a90c29 | 6758 | |
5f0476ce | 6759 | CLS_FOR_EACH_TARGET (rule, cr, &oftable->cls, &target) { |
ac4aa4c8 JR |
6760 | if (minimask_get_vid_mask(&rule->cr.match.mask) == VLAN_VID_MASK) { |
6761 | uint16_t vid = miniflow_get_vid(&rule->cr.match.flow); | |
6762 | ||
6763 | bitmap_set1(vlan_bitmap, vid); | |
6764 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
52a90c29 BP |
6765 | } |
6766 | } | |
6767 | } | |
059ef3c6 EJ |
6768 | |
6769 | cls_rule_destroy(&target); | |
52a90c29 BP |
6770 | } |
6771 | ||
6772 | /* Returns true if new VLANs have come into use by the flow table since the | |
6773 | * last call to ofproto_get_vlan_usage(). | |
6774 | * | |
6775 | * We don't track when old VLANs stop being used. */ | |
6776 | bool | |
6777 | ofproto_has_vlan_usage_changed(const struct ofproto *ofproto) | |
6778 | { | |
6779 | return ofproto->vlans_changed; | |
6780 | } | |
6781 | ||
6782 | /* Configures a VLAN splinter binding between the ports identified by OpenFlow | |
6783 | * port numbers 'vlandev_ofp_port' and 'realdev_ofp_port'. If | |
6784 | * 'realdev_ofp_port' is nonzero, then the VLAN device is enslaved to the real | |
6785 | * device as a VLAN splinter for VLAN ID 'vid'. If 'realdev_ofp_port' is zero, | |
6786 | * then the VLAN device is un-enslaved. */ | |
6787 | int | |
4e022ec0 AW |
6788 | ofproto_port_set_realdev(struct ofproto *ofproto, ofp_port_t vlandev_ofp_port, |
6789 | ofp_port_t realdev_ofp_port, int vid) | |
52a90c29 BP |
6790 | { |
6791 | struct ofport *ofport; | |
6792 | int error; | |
6793 | ||
cb22974d | 6794 | ovs_assert(vlandev_ofp_port != realdev_ofp_port); |
52a90c29 BP |
6795 | |
6796 | ofport = ofproto_get_port(ofproto, vlandev_ofp_port); | |
6797 | if (!ofport) { | |
6798 | VLOG_WARN("%s: cannot set realdev on nonexistent port %"PRIu16, | |
6799 | ofproto->name, vlandev_ofp_port); | |
6800 | return EINVAL; | |
6801 | } | |
6802 | ||
6803 | if (!ofproto->ofproto_class->set_realdev) { | |
6804 | if (!vlandev_ofp_port) { | |
6805 | return 0; | |
6806 | } | |
6807 | VLOG_WARN("%s: vlan splinters not supported", ofproto->name); | |
6808 | return EOPNOTSUPP; | |
6809 | } | |
6810 | ||
6811 | error = ofproto->ofproto_class->set_realdev(ofport, realdev_ofp_port, vid); | |
6812 | if (error) { | |
6813 | VLOG_WARN("%s: setting realdev on port %"PRIu16" (%s) failed (%s)", | |
6814 | ofproto->name, vlandev_ofp_port, | |
10a89ef0 | 6815 | netdev_get_name(ofport->netdev), ovs_strerror(error)); |
52a90c29 BP |
6816 | } |
6817 | return error; | |
6818 | } |