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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); |
7cb279c2 SH |
526 | ofproto->ogf.capabilities = OFPGFC_CHAINING | OFPGFC_SELECT_LIVENESS | |
527 | OFPGFC_SELECT_WEIGHT; | |
08d1e234 BP |
528 | for (i = 0; i < 4; i++) { |
529 | ofproto->ogf.max_groups[i] = OFPG_MAX; | |
530 | ofproto->ogf.ofpacts[i] = (UINT64_C(1) << N_OFPACTS) - 1; | |
531 | } | |
abe529af | 532 | |
0f5f95a9 | 533 | error = ofproto->ofproto_class->construct(ofproto); |
19a87e36 | 534 | if (error) { |
abe529af | 535 | VLOG_ERR("failed to open datapath %s: %s", |
10a89ef0 | 536 | datapath_name, ovs_strerror(error)); |
58f19539 | 537 | connmgr_destroy(ofproto->connmgr); |
abe529af | 538 | ofproto_destroy__(ofproto); |
19a87e36 BP |
539 | return error; |
540 | } | |
073e2a6f | 541 | |
c2f0373a | 542 | /* Check that hidden tables, if any, are at the end. */ |
cb22974d | 543 | ovs_assert(ofproto->n_tables); |
c2f0373a BP |
544 | for (i = 0; i + 1 < ofproto->n_tables; i++) { |
545 | enum oftable_flags flags = ofproto->tables[i].flags; | |
546 | enum oftable_flags next_flags = ofproto->tables[i + 1].flags; | |
547 | ||
cb22974d | 548 | ovs_assert(!(flags & OFTABLE_HIDDEN) || next_flags & OFTABLE_HIDDEN); |
c2f0373a | 549 | } |
19a87e36 | 550 | |
abe529af | 551 | ofproto->datapath_id = pick_datapath_id(ofproto); |
abe529af | 552 | init_ports(ofproto); |
7aa697dd | 553 | |
9cae45dc JR |
554 | /* Initialize meters table. */ |
555 | if (ofproto->ofproto_class->meter_get_features) { | |
556 | ofproto->ofproto_class->meter_get_features(ofproto, | |
557 | &ofproto->meter_features); | |
558 | } else { | |
559 | memset(&ofproto->meter_features, 0, sizeof ofproto->meter_features); | |
560 | } | |
561 | ofproto->meters = xzalloc((ofproto->meter_features.max_meters + 1) | |
562 | * sizeof(struct meter *)); | |
563 | ||
abe529af | 564 | *ofprotop = ofproto; |
064af421 BP |
565 | return 0; |
566 | } | |
567 | ||
91858960 BP |
568 | /* Must be called (only) by an ofproto implementation in its constructor |
569 | * function. See the large comment on 'construct' in struct ofproto_class for | |
570 | * details. */ | |
0f5f95a9 BP |
571 | void |
572 | ofproto_init_tables(struct ofproto *ofproto, int n_tables) | |
573 | { | |
574 | struct oftable *table; | |
575 | ||
cb22974d BP |
576 | ovs_assert(!ofproto->n_tables); |
577 | ovs_assert(n_tables >= 1 && n_tables <= 255); | |
0f5f95a9 BP |
578 | |
579 | ofproto->n_tables = n_tables; | |
580 | ofproto->tables = xmalloc(n_tables * sizeof *ofproto->tables); | |
581 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
582 | oftable_init(table); | |
583 | } | |
584 | } | |
585 | ||
91858960 BP |
586 | /* To be optionally called (only) by an ofproto implementation in its |
587 | * constructor function. See the large comment on 'construct' in struct | |
588 | * ofproto_class for details. | |
589 | * | |
590 | * Sets the maximum number of ports to 'max_ports'. The ofproto generic layer | |
591 | * will then ensure that actions passed into the ofproto implementation will | |
592 | * not refer to OpenFlow ports numbered 'max_ports' or higher. If this | |
593 | * function is not called, there will be no such restriction. | |
594 | * | |
595 | * Reserved ports numbered OFPP_MAX and higher are special and not subject to | |
596 | * the 'max_ports' restriction. */ | |
597 | void | |
430dbb14 | 598 | ofproto_init_max_ports(struct ofproto *ofproto, uint16_t max_ports) |
91858960 | 599 | { |
430dbb14 | 600 | ovs_assert(max_ports <= ofp_to_u16(OFPP_MAX)); |
91858960 BP |
601 | ofproto->max_ports = max_ports; |
602 | } | |
603 | ||
e825ace2 BP |
604 | uint64_t |
605 | ofproto_get_datapath_id(const struct ofproto *ofproto) | |
606 | { | |
607 | return ofproto->datapath_id; | |
608 | } | |
609 | ||
064af421 BP |
610 | void |
611 | ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id) | |
612 | { | |
613 | uint64_t old_dpid = p->datapath_id; | |
fa60c019 | 614 | p->datapath_id = datapath_id ? datapath_id : pick_datapath_id(p); |
064af421 | 615 | if (p->datapath_id != old_dpid) { |
76ce9432 BP |
616 | /* Force all active connections to reconnect, since there is no way to |
617 | * notify a controller that the datapath ID has changed. */ | |
fa05809b | 618 | ofproto_reconnect_controllers(p); |
064af421 BP |
619 | } |
620 | } | |
621 | ||
76ce9432 BP |
622 | void |
623 | ofproto_set_controllers(struct ofproto *p, | |
624 | const struct ofproto_controller *controllers, | |
1d9ffc17 | 625 | size_t n_controllers, uint32_t allowed_versions) |
76ce9432 | 626 | { |
1d9ffc17 SH |
627 | connmgr_set_controllers(p->connmgr, controllers, n_controllers, |
628 | allowed_versions); | |
064af421 BP |
629 | } |
630 | ||
31681a5d JP |
631 | void |
632 | ofproto_set_fail_mode(struct ofproto *p, enum ofproto_fail_mode fail_mode) | |
633 | { | |
19a87e36 | 634 | connmgr_set_fail_mode(p->connmgr, fail_mode); |
31681a5d JP |
635 | } |
636 | ||
fa05809b BP |
637 | /* Drops the connections between 'ofproto' and all of its controllers, forcing |
638 | * them to reconnect. */ | |
639 | void | |
640 | ofproto_reconnect_controllers(struct ofproto *ofproto) | |
641 | { | |
19a87e36 | 642 | connmgr_reconnect(ofproto->connmgr); |
917e50e1 BP |
643 | } |
644 | ||
645 | /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s | |
646 | * in-band control should guarantee access, in the same way that in-band | |
647 | * control guarantees access to OpenFlow controllers. */ | |
648 | void | |
649 | ofproto_set_extra_in_band_remotes(struct ofproto *ofproto, | |
650 | const struct sockaddr_in *extras, size_t n) | |
651 | { | |
19a87e36 | 652 | connmgr_set_extra_in_band_remotes(ofproto->connmgr, extras, n); |
917e50e1 BP |
653 | } |
654 | ||
b1da6250 BP |
655 | /* Sets the OpenFlow queue used by flows set up by in-band control on |
656 | * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control | |
657 | * flows will use the default queue. */ | |
658 | void | |
659 | ofproto_set_in_band_queue(struct ofproto *ofproto, int queue_id) | |
660 | { | |
19a87e36 | 661 | connmgr_set_in_band_queue(ofproto->connmgr, queue_id); |
b1da6250 BP |
662 | } |
663 | ||
084f5290 SH |
664 | /* Sets the number of flows at which eviction from the kernel flow table |
665 | * will occur. */ | |
666 | void | |
e79a6c83 | 667 | ofproto_set_flow_limit(unsigned limit) |
084f5290 | 668 | { |
e79a6c83 | 669 | ofproto_flow_limit = limit; |
084f5290 SH |
670 | } |
671 | ||
72310b04 JS |
672 | /* Sets the maximum idle time for flows in the datapath before they are |
673 | * expired. */ | |
674 | void | |
675 | ofproto_set_max_idle(unsigned max_idle) | |
676 | { | |
677 | ofproto_max_idle = max_idle; | |
678 | } | |
679 | ||
b53055f4 | 680 | /* If forward_bpdu is true, the NORMAL action will forward frames with |
8402c74b SS |
681 | * reserved (e.g. STP) destination Ethernet addresses. if forward_bpdu is false, |
682 | * the NORMAL action will drop these frames. */ | |
683 | void | |
684 | ofproto_set_forward_bpdu(struct ofproto *ofproto, bool forward_bpdu) | |
685 | { | |
686 | bool old_val = ofproto->forward_bpdu; | |
687 | ofproto->forward_bpdu = forward_bpdu; | |
688 | if (old_val != ofproto->forward_bpdu) { | |
689 | if (ofproto->ofproto_class->forward_bpdu_changed) { | |
690 | ofproto->ofproto_class->forward_bpdu_changed(ofproto); | |
691 | } | |
b53055f4 | 692 | } |
8402c74b SS |
693 | } |
694 | ||
e764773c | 695 | /* Sets the MAC aging timeout for the OFPP_NORMAL action on 'ofproto' to |
c4069512 BP |
696 | * 'idle_time', in seconds, and the maximum number of MAC table entries to |
697 | * 'max_entries'. */ | |
e764773c | 698 | void |
c4069512 BP |
699 | ofproto_set_mac_table_config(struct ofproto *ofproto, unsigned idle_time, |
700 | size_t max_entries) | |
e764773c | 701 | { |
c4069512 BP |
702 | if (ofproto->ofproto_class->set_mac_table_config) { |
703 | ofproto->ofproto_class->set_mac_table_config(ofproto, idle_time, | |
704 | max_entries); | |
e764773c BP |
705 | } |
706 | } | |
707 | ||
7c38d0a5 FL |
708 | /* Multicast snooping configuration. */ |
709 | ||
710 | /* Configures multicast snooping on 'ofproto' using the settings | |
711 | * defined in 's'. If 's' is NULL, disables multicast snooping. | |
712 | * | |
713 | * Returns 0 if successful, otherwise a positive errno value. */ | |
714 | int | |
715 | ofproto_set_mcast_snooping(struct ofproto *ofproto, | |
716 | const struct ofproto_mcast_snooping_settings *s) | |
717 | { | |
718 | return (ofproto->ofproto_class->set_mcast_snooping | |
719 | ? ofproto->ofproto_class->set_mcast_snooping(ofproto, s) | |
720 | : EOPNOTSUPP); | |
721 | } | |
722 | ||
723 | /* Configures multicast snooping flood setting on 'ofp_port' of 'ofproto'. | |
724 | * | |
725 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
726 | int | |
727 | ofproto_port_set_mcast_snooping(struct ofproto *ofproto, void *aux, bool flood) | |
728 | { | |
729 | return (ofproto->ofproto_class->set_mcast_snooping_port | |
730 | ? ofproto->ofproto_class->set_mcast_snooping_port(ofproto, aux, | |
731 | flood) | |
732 | : EOPNOTSUPP); | |
733 | } | |
734 | ||
f2eee189 AW |
735 | void |
736 | ofproto_set_n_dpdk_rxqs(int n_rxqs) | |
737 | { | |
738 | n_dpdk_rxqs = MAX(n_rxqs, 0); | |
739 | } | |
740 | ||
741 | void | |
742 | ofproto_set_cpu_mask(const char *cmask) | |
743 | { | |
744 | free(pmd_cpu_mask); | |
745 | ||
746 | pmd_cpu_mask = cmask ? xstrdup(cmask) : NULL; | |
747 | } | |
748 | ||
448a4b2f | 749 | void |
30ea0da7 | 750 | ofproto_set_threads(int n_handlers_, int n_revalidators_) |
448a4b2f | 751 | { |
e79a6c83 EJ |
752 | int threads = MAX(count_cpu_cores(), 2); |
753 | ||
30ea0da7 GS |
754 | n_revalidators = MAX(n_revalidators_, 0); |
755 | n_handlers = MAX(n_handlers_, 0); | |
e79a6c83 EJ |
756 | |
757 | if (!n_revalidators) { | |
758 | n_revalidators = n_handlers | |
759 | ? MAX(threads - (int) n_handlers, 1) | |
760 | : threads / 4 + 1; | |
761 | } | |
762 | ||
763 | if (!n_handlers) { | |
764 | n_handlers = MAX(threads - (int) n_revalidators, 1); | |
765 | } | |
448a4b2f AW |
766 | } |
767 | ||
8b6ff729 BP |
768 | void |
769 | ofproto_set_dp_desc(struct ofproto *p, const char *dp_desc) | |
770 | { | |
771 | free(p->dp_desc); | |
772 | p->dp_desc = dp_desc ? xstrdup(dp_desc) : NULL; | |
773 | } | |
774 | ||
064af421 | 775 | int |
81e2083f | 776 | ofproto_set_snoops(struct ofproto *ofproto, const struct sset *snoops) |
064af421 | 777 | { |
19a87e36 | 778 | return connmgr_set_snoops(ofproto->connmgr, snoops); |
064af421 BP |
779 | } |
780 | ||
781 | int | |
0193b2af JG |
782 | ofproto_set_netflow(struct ofproto *ofproto, |
783 | const struct netflow_options *nf_options) | |
064af421 | 784 | { |
abe529af BP |
785 | if (nf_options && sset_is_empty(&nf_options->collectors)) { |
786 | nf_options = NULL; | |
787 | } | |
788 | ||
789 | if (ofproto->ofproto_class->set_netflow) { | |
790 | return ofproto->ofproto_class->set_netflow(ofproto, nf_options); | |
064af421 | 791 | } else { |
abe529af | 792 | return nf_options ? EOPNOTSUPP : 0; |
064af421 BP |
793 | } |
794 | } | |
795 | ||
abe529af | 796 | int |
72b06300 BP |
797 | ofproto_set_sflow(struct ofproto *ofproto, |
798 | const struct ofproto_sflow_options *oso) | |
799 | { | |
abe529af BP |
800 | if (oso && sset_is_empty(&oso->targets)) { |
801 | oso = NULL; | |
802 | } | |
72b06300 | 803 | |
abe529af BP |
804 | if (ofproto->ofproto_class->set_sflow) { |
805 | return ofproto->ofproto_class->set_sflow(ofproto, oso); | |
72b06300 | 806 | } else { |
abe529af | 807 | return oso ? EOPNOTSUPP : 0; |
72b06300 BP |
808 | } |
809 | } | |
29089a54 RL |
810 | |
811 | int | |
812 | ofproto_set_ipfix(struct ofproto *ofproto, | |
813 | const struct ofproto_ipfix_bridge_exporter_options *bo, | |
814 | const struct ofproto_ipfix_flow_exporter_options *fo, | |
815 | size_t n_fo) | |
816 | { | |
817 | if (ofproto->ofproto_class->set_ipfix) { | |
818 | return ofproto->ofproto_class->set_ipfix(ofproto, bo, fo, n_fo); | |
819 | } else { | |
820 | return (bo || fo) ? EOPNOTSUPP : 0; | |
821 | } | |
822 | } | |
40358701 GS |
823 | |
824 | void | |
825 | ofproto_set_flow_restore_wait(bool flow_restore_wait_db) | |
826 | { | |
827 | flow_restore_wait = flow_restore_wait_db; | |
828 | } | |
829 | ||
830 | bool | |
831 | ofproto_get_flow_restore_wait(void) | |
832 | { | |
833 | return flow_restore_wait; | |
834 | } | |
835 | ||
e7934396 | 836 | \f |
21f7563c JP |
837 | /* Spanning Tree Protocol (STP) configuration. */ |
838 | ||
839 | /* Configures STP on 'ofproto' using the settings defined in 's'. If | |
840 | * 's' is NULL, disables STP. | |
841 | * | |
842 | * Returns 0 if successful, otherwise a positive errno value. */ | |
843 | int | |
844 | ofproto_set_stp(struct ofproto *ofproto, | |
845 | const struct ofproto_stp_settings *s) | |
846 | { | |
847 | return (ofproto->ofproto_class->set_stp | |
848 | ? ofproto->ofproto_class->set_stp(ofproto, s) | |
849 | : EOPNOTSUPP); | |
850 | } | |
851 | ||
852 | /* Retrieves STP status of 'ofproto' and stores it in 's'. If the | |
853 | * 'enabled' member of 's' is false, then the other members are not | |
854 | * meaningful. | |
855 | * | |
856 | * Returns 0 if successful, otherwise a positive errno value. */ | |
857 | int | |
858 | ofproto_get_stp_status(struct ofproto *ofproto, | |
859 | struct ofproto_stp_status *s) | |
860 | { | |
861 | return (ofproto->ofproto_class->get_stp_status | |
862 | ? ofproto->ofproto_class->get_stp_status(ofproto, s) | |
863 | : EOPNOTSUPP); | |
864 | } | |
865 | ||
866 | /* Configures STP on 'ofp_port' of 'ofproto' using the settings defined | |
867 | * in 's'. The caller is responsible for assigning STP port numbers | |
868 | * (using the 'port_num' member in the range of 1 through 255, inclusive) | |
869 | * and ensuring there are no duplicates. If the 's' is NULL, then STP | |
870 | * is disabled on the port. | |
871 | * | |
872 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
873 | int | |
4e022ec0 | 874 | ofproto_port_set_stp(struct ofproto *ofproto, ofp_port_t ofp_port, |
21f7563c JP |
875 | const struct ofproto_port_stp_settings *s) |
876 | { | |
877 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
878 | if (!ofport) { | |
879 | VLOG_WARN("%s: cannot configure STP on nonexistent port %"PRIu16, | |
880 | ofproto->name, ofp_port); | |
881 | return ENODEV; | |
882 | } | |
883 | ||
884 | return (ofproto->ofproto_class->set_stp_port | |
885 | ? ofproto->ofproto_class->set_stp_port(ofport, s) | |
886 | : EOPNOTSUPP); | |
887 | } | |
888 | ||
889 | /* Retrieves STP port status of 'ofp_port' on 'ofproto' and stores it in | |
890 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
891 | * are not meaningful. | |
892 | * | |
893 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
894 | int | |
4e022ec0 | 895 | ofproto_port_get_stp_status(struct ofproto *ofproto, ofp_port_t ofp_port, |
21f7563c JP |
896 | struct ofproto_port_stp_status *s) |
897 | { | |
898 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
899 | if (!ofport) { | |
b0a5c43b JP |
900 | VLOG_WARN_RL(&rl, "%s: cannot get STP status on nonexistent " |
901 | "port %"PRIu16, ofproto->name, ofp_port); | |
21f7563c JP |
902 | return ENODEV; |
903 | } | |
904 | ||
905 | return (ofproto->ofproto_class->get_stp_port_status | |
906 | ? ofproto->ofproto_class->get_stp_port_status(ofport, s) | |
907 | : EOPNOTSUPP); | |
908 | } | |
fd28ce3a JS |
909 | |
910 | /* Retrieves STP port statistics of 'ofp_port' on 'ofproto' and stores it in | |
911 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
912 | * are not meaningful. | |
913 | * | |
914 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
915 | int | |
916 | ofproto_port_get_stp_stats(struct ofproto *ofproto, ofp_port_t ofp_port, | |
917 | struct ofproto_port_stp_stats *s) | |
918 | { | |
919 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
920 | if (!ofport) { | |
921 | VLOG_WARN_RL(&rl, "%s: cannot get STP stats on nonexistent " | |
922 | "port %"PRIu16, ofproto->name, ofp_port); | |
923 | return ENODEV; | |
924 | } | |
925 | ||
926 | return (ofproto->ofproto_class->get_stp_port_stats | |
927 | ? ofproto->ofproto_class->get_stp_port_stats(ofport, s) | |
928 | : EOPNOTSUPP); | |
929 | } | |
9efd308e DV |
930 | |
931 | /* Rapid Spanning Tree Protocol (RSTP) configuration. */ | |
932 | ||
933 | /* Configures RSTP on 'ofproto' using the settings defined in 's'. If | |
934 | * 's' is NULL, disables RSTP. | |
935 | * | |
936 | * Returns 0 if successful, otherwise a positive errno value. */ | |
937 | int | |
938 | ofproto_set_rstp(struct ofproto *ofproto, | |
939 | const struct ofproto_rstp_settings *s) | |
940 | { | |
941 | if (!ofproto->ofproto_class->set_rstp) { | |
942 | return EOPNOTSUPP; | |
943 | } | |
944 | ofproto->ofproto_class->set_rstp(ofproto, s); | |
945 | return 0; | |
946 | } | |
947 | ||
948 | /* Retrieves RSTP status of 'ofproto' and stores it in 's'. If the | |
949 | * 'enabled' member of 's' is false, then the other members are not | |
950 | * meaningful. | |
951 | * | |
952 | * Returns 0 if successful, otherwise a positive errno value. */ | |
953 | int | |
954 | ofproto_get_rstp_status(struct ofproto *ofproto, | |
955 | struct ofproto_rstp_status *s) | |
956 | { | |
957 | if (!ofproto->ofproto_class->get_rstp_status) { | |
958 | return EOPNOTSUPP; | |
959 | } | |
960 | ofproto->ofproto_class->get_rstp_status(ofproto, s); | |
961 | return 0; | |
962 | } | |
963 | ||
964 | /* Configures RSTP on 'ofp_port' of 'ofproto' using the settings defined | |
965 | * in 's'. The caller is responsible for assigning RSTP port numbers | |
966 | * (using the 'port_num' member in the range of 1 through 255, inclusive) | |
967 | * and ensuring there are no duplicates. If the 's' is NULL, then RSTP | |
968 | * is disabled on the port. | |
969 | * | |
970 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
971 | int | |
972 | ofproto_port_set_rstp(struct ofproto *ofproto, ofp_port_t ofp_port, | |
973 | const struct ofproto_port_rstp_settings *s) | |
974 | { | |
975 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
976 | if (!ofport) { | |
977 | VLOG_WARN("%s: cannot configure RSTP on nonexistent port %"PRIu16, | |
978 | ofproto->name, ofp_port); | |
979 | return ENODEV; | |
980 | } | |
981 | ||
982 | if (!ofproto->ofproto_class->set_rstp_port) { | |
983 | return EOPNOTSUPP; | |
984 | } | |
985 | ofproto->ofproto_class->set_rstp_port(ofport, s); | |
986 | return 0; | |
987 | } | |
988 | ||
989 | /* Retrieves RSTP port status of 'ofp_port' on 'ofproto' and stores it in | |
990 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
991 | * are not meaningful. | |
992 | * | |
993 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
994 | int | |
995 | ofproto_port_get_rstp_status(struct ofproto *ofproto, ofp_port_t ofp_port, | |
996 | struct ofproto_port_rstp_status *s) | |
997 | { | |
998 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
999 | if (!ofport) { | |
1000 | VLOG_WARN_RL(&rl, "%s: cannot get RSTP status on nonexistent " | |
1001 | "port %"PRIu16, ofproto->name, ofp_port); | |
1002 | return ENODEV; | |
1003 | } | |
1004 | ||
1005 | if (!ofproto->ofproto_class->get_rstp_port_status) { | |
1006 | return EOPNOTSUPP; | |
1007 | } | |
1008 | ofproto->ofproto_class->get_rstp_port_status(ofport, s); | |
1009 | return 0; | |
1010 | } | |
21f7563c | 1011 | \f |
8b36f51e EJ |
1012 | /* Queue DSCP configuration. */ |
1013 | ||
1014 | /* Registers meta-data associated with the 'n_qdscp' Qualities of Service | |
1015 | * 'queues' attached to 'ofport'. This data is not intended to be sufficient | |
1016 | * to implement QoS. Instead, it is used to implement features which require | |
1017 | * knowledge of what queues exist on a port, and some basic information about | |
1018 | * them. | |
1019 | * | |
1020 | * Returns 0 if successful, otherwise a positive errno value. */ | |
1021 | int | |
4e022ec0 | 1022 | ofproto_port_set_queues(struct ofproto *ofproto, ofp_port_t ofp_port, |
8b36f51e EJ |
1023 | const struct ofproto_port_queue *queues, |
1024 | size_t n_queues) | |
1025 | { | |
1026 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1027 | ||
1028 | if (!ofport) { | |
1029 | VLOG_WARN("%s: cannot set queues on nonexistent port %"PRIu16, | |
1030 | ofproto->name, ofp_port); | |
1031 | return ENODEV; | |
1032 | } | |
1033 | ||
1034 | return (ofproto->ofproto_class->set_queues | |
1035 | ? ofproto->ofproto_class->set_queues(ofport, queues, n_queues) | |
1036 | : EOPNOTSUPP); | |
1037 | } | |
1038 | \f | |
e7934396 BP |
1039 | /* Connectivity Fault Management configuration. */ |
1040 | ||
892815f5 | 1041 | /* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */ |
e7934396 | 1042 | void |
4e022ec0 | 1043 | ofproto_port_clear_cfm(struct ofproto *ofproto, ofp_port_t ofp_port) |
e7934396 | 1044 | { |
abe529af BP |
1045 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1046 | if (ofport && ofproto->ofproto_class->set_cfm) { | |
a5610457 | 1047 | ofproto->ofproto_class->set_cfm(ofport, NULL); |
e7934396 BP |
1048 | } |
1049 | } | |
72b06300 | 1050 | |
892815f5 | 1051 | /* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes |
93b8df38 EJ |
1052 | * basic configuration from the configuration members in 'cfm', and the remote |
1053 | * maintenance point ID from remote_mpid. Ignores the statistics members of | |
1054 | * 'cfm'. | |
e7934396 | 1055 | * |
892815f5 | 1056 | * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */ |
e7934396 | 1057 | void |
4e022ec0 | 1058 | ofproto_port_set_cfm(struct ofproto *ofproto, ofp_port_t ofp_port, |
a5610457 | 1059 | const struct cfm_settings *s) |
e7934396 BP |
1060 | { |
1061 | struct ofport *ofport; | |
abe529af | 1062 | int error; |
e7934396 | 1063 | |
abe529af | 1064 | ofport = ofproto_get_port(ofproto, ofp_port); |
e7934396 | 1065 | if (!ofport) { |
892815f5 BP |
1066 | VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16, |
1067 | ofproto->name, ofp_port); | |
e7934396 BP |
1068 | return; |
1069 | } | |
1070 | ||
93b8df38 EJ |
1071 | /* XXX: For configuration simplicity, we only support one remote_mpid |
1072 | * outside of the CFM module. It's not clear if this is the correct long | |
1073 | * term solution or not. */ | |
abe529af | 1074 | error = (ofproto->ofproto_class->set_cfm |
a5610457 | 1075 | ? ofproto->ofproto_class->set_cfm(ofport, s) |
abe529af BP |
1076 | : EOPNOTSUPP); |
1077 | if (error) { | |
1078 | VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed (%s)", | |
1079 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
10a89ef0 | 1080 | ovs_strerror(error)); |
e7934396 | 1081 | } |
e7934396 | 1082 | } |
e7934396 | 1083 | |
ccc09689 EJ |
1084 | /* Configures BFD on 'ofp_port' in 'ofproto'. This function has no effect if |
1085 | * 'ofproto' does not have a port 'ofp_port'. */ | |
1086 | void | |
4e022ec0 | 1087 | ofproto_port_set_bfd(struct ofproto *ofproto, ofp_port_t ofp_port, |
ccc09689 EJ |
1088 | const struct smap *cfg) |
1089 | { | |
1090 | struct ofport *ofport; | |
1091 | int error; | |
1092 | ||
1093 | ofport = ofproto_get_port(ofproto, ofp_port); | |
1094 | if (!ofport) { | |
1095 | VLOG_WARN("%s: cannot configure bfd on nonexistent port %"PRIu16, | |
1096 | ofproto->name, ofp_port); | |
e8999bdc | 1097 | return; |
ccc09689 EJ |
1098 | } |
1099 | ||
1100 | error = (ofproto->ofproto_class->set_bfd | |
1101 | ? ofproto->ofproto_class->set_bfd(ofport, cfg) | |
1102 | : EOPNOTSUPP); | |
1103 | if (error) { | |
1104 | VLOG_WARN("%s: bfd configuration on port %"PRIu16" (%s) failed (%s)", | |
1105 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
10a89ef0 | 1106 | ovs_strerror(error)); |
ccc09689 EJ |
1107 | } |
1108 | } | |
1109 | ||
8f5514fe AW |
1110 | /* Checks the status change of BFD on 'ofport'. |
1111 | * | |
1112 | * Returns true if 'ofproto_class' does not support 'bfd_status_changed'. */ | |
1113 | bool | |
1114 | ofproto_port_bfd_status_changed(struct ofproto *ofproto, ofp_port_t ofp_port) | |
1115 | { | |
1116 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1117 | return (ofport && ofproto->ofproto_class->bfd_status_changed | |
1118 | ? ofproto->ofproto_class->bfd_status_changed(ofport) | |
1119 | : true); | |
1120 | } | |
1121 | ||
88bf179a | 1122 | /* Populates 'status' with the status of BFD on 'ofport'. Returns 0 on |
8f5514fe AW |
1123 | * success. Returns a positive errno otherwise. Has no effect if 'ofp_port' |
1124 | * is not an OpenFlow port in 'ofproto'. | |
88bf179a AW |
1125 | * |
1126 | * The caller must provide and own '*status'. */ | |
ccc09689 | 1127 | int |
4e022ec0 | 1128 | ofproto_port_get_bfd_status(struct ofproto *ofproto, ofp_port_t ofp_port, |
ccc09689 EJ |
1129 | struct smap *status) |
1130 | { | |
1131 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1132 | return (ofport && ofproto->ofproto_class->get_bfd_status | |
1133 | ? ofproto->ofproto_class->get_bfd_status(ofport, status) | |
1134 | : EOPNOTSUPP); | |
1135 | } | |
1136 | ||
fa066f01 BP |
1137 | /* Checks the status of LACP negotiation for 'ofp_port' within ofproto. |
1138 | * Returns 1 if LACP partner information for 'ofp_port' is up-to-date, | |
1139 | * 0 if LACP partner information is not current (generally indicating a | |
1140 | * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */ | |
1141 | int | |
4e022ec0 | 1142 | ofproto_port_is_lacp_current(struct ofproto *ofproto, ofp_port_t ofp_port) |
fa066f01 | 1143 | { |
abe529af BP |
1144 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1145 | return (ofport && ofproto->ofproto_class->port_is_lacp_current | |
1146 | ? ofproto->ofproto_class->port_is_lacp_current(ofport) | |
fa066f01 | 1147 | : -1); |
e7934396 | 1148 | } |
e7934396 | 1149 | \f |
fa066f01 | 1150 | /* Bundles. */ |
e7934396 | 1151 | |
abe529af BP |
1152 | /* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'. |
1153 | * A bundle is the same concept as a Port in OVSDB, that is, it consists of one | |
1154 | * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN | |
1155 | * configuration plus, if there is more than one slave, a bonding | |
1156 | * configuration. | |
1157 | * | |
1158 | * If 'aux' is already registered then this function updates its configuration | |
1159 | * to 's'. Otherwise, this function registers a new bundle. | |
1160 | * | |
1161 | * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL | |
1162 | * port. */ | |
1163 | int | |
1164 | ofproto_bundle_register(struct ofproto *ofproto, void *aux, | |
1165 | const struct ofproto_bundle_settings *s) | |
fa066f01 | 1166 | { |
abe529af BP |
1167 | return (ofproto->ofproto_class->bundle_set |
1168 | ? ofproto->ofproto_class->bundle_set(ofproto, aux, s) | |
1169 | : EOPNOTSUPP); | |
fa066f01 BP |
1170 | } |
1171 | ||
abe529af BP |
1172 | /* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'. |
1173 | * If no such bundle has been registered, this has no effect. */ | |
1174 | int | |
1175 | ofproto_bundle_unregister(struct ofproto *ofproto, void *aux) | |
e7934396 | 1176 | { |
abe529af | 1177 | return ofproto_bundle_register(ofproto, aux, NULL); |
e7934396 | 1178 | } |
fa066f01 | 1179 | |
e7934396 | 1180 | \f |
abe529af BP |
1181 | /* Registers a mirror associated with client data pointer 'aux' in 'ofproto'. |
1182 | * If 'aux' is already registered then this function updates its configuration | |
c06bba01 | 1183 | * to 's'. Otherwise, this function registers a new mirror. */ |
abe529af BP |
1184 | int |
1185 | ofproto_mirror_register(struct ofproto *ofproto, void *aux, | |
1186 | const struct ofproto_mirror_settings *s) | |
064af421 | 1187 | { |
abe529af BP |
1188 | return (ofproto->ofproto_class->mirror_set |
1189 | ? ofproto->ofproto_class->mirror_set(ofproto, aux, s) | |
1190 | : EOPNOTSUPP); | |
064af421 BP |
1191 | } |
1192 | ||
abe529af BP |
1193 | /* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'. |
1194 | * If no mirror has been registered, this has no effect. */ | |
1195 | int | |
1196 | ofproto_mirror_unregister(struct ofproto *ofproto, void *aux) | |
064af421 | 1197 | { |
abe529af | 1198 | return ofproto_mirror_register(ofproto, aux, NULL); |
064af421 BP |
1199 | } |
1200 | ||
9d24de3b JP |
1201 | /* Retrieves statistics from mirror associated with client data pointer |
1202 | * 'aux' in 'ofproto'. Stores packet and byte counts in 'packets' and | |
1203 | * 'bytes', respectively. If a particular counters is not supported, | |
1204 | * the appropriate argument is set to UINT64_MAX. */ | |
1205 | int | |
1206 | ofproto_mirror_get_stats(struct ofproto *ofproto, void *aux, | |
1207 | uint64_t *packets, uint64_t *bytes) | |
1208 | { | |
1209 | if (!ofproto->ofproto_class->mirror_get_stats) { | |
1210 | *packets = *bytes = UINT64_MAX; | |
1211 | return EOPNOTSUPP; | |
1212 | } | |
1213 | ||
1214 | return ofproto->ofproto_class->mirror_get_stats(ofproto, aux, | |
1215 | packets, bytes); | |
1216 | } | |
1217 | ||
abe529af BP |
1218 | /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on |
1219 | * which all packets are flooded, instead of using MAC learning. If | |
1220 | * 'flood_vlans' is NULL, then MAC learning applies to all VLANs. | |
1221 | * | |
1222 | * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL | |
1223 | * port. */ | |
1224 | int | |
1225 | ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans) | |
abdfe474 | 1226 | { |
abe529af BP |
1227 | return (ofproto->ofproto_class->set_flood_vlans |
1228 | ? ofproto->ofproto_class->set_flood_vlans(ofproto, flood_vlans) | |
1229 | : EOPNOTSUPP); | |
abdfe474 JP |
1230 | } |
1231 | ||
abe529af BP |
1232 | /* Returns true if 'aux' is a registered bundle that is currently in use as the |
1233 | * output for a mirror. */ | |
1234 | bool | |
b4affc74 | 1235 | ofproto_is_mirror_output_bundle(const struct ofproto *ofproto, void *aux) |
abe529af BP |
1236 | { |
1237 | return (ofproto->ofproto_class->is_mirror_output_bundle | |
1238 | ? ofproto->ofproto_class->is_mirror_output_bundle(ofproto, aux) | |
1239 | : false); | |
1240 | } | |
1241 | \f | |
254750ce BP |
1242 | /* Configuration of OpenFlow tables. */ |
1243 | ||
1244 | /* Returns the number of OpenFlow tables in 'ofproto'. */ | |
1245 | int | |
1246 | ofproto_get_n_tables(const struct ofproto *ofproto) | |
1247 | { | |
1248 | return ofproto->n_tables; | |
1249 | } | |
1250 | ||
adcf00ba AZ |
1251 | /* Returns the number of Controller visible OpenFlow tables |
1252 | * in 'ofproto'. This number will exclude Hidden tables. | |
1253 | * This funtion's return value should be less or equal to that of | |
1254 | * ofproto_get_n_tables() . */ | |
1255 | uint8_t | |
1256 | ofproto_get_n_visible_tables(const struct ofproto *ofproto) | |
1257 | { | |
1258 | uint8_t n = ofproto->n_tables; | |
1259 | ||
1260 | /* Count only non-hidden tables in the number of tables. (Hidden tables, | |
1261 | * if present, are always at the end.) */ | |
1262 | while(n && (ofproto->tables[n - 1].flags & OFTABLE_HIDDEN)) { | |
1263 | n--; | |
1264 | } | |
1265 | ||
1266 | return n; | |
1267 | } | |
1268 | ||
254750ce BP |
1269 | /* Configures the OpenFlow table in 'ofproto' with id 'table_id' with the |
1270 | * settings from 's'. 'table_id' must be in the range 0 through the number of | |
1271 | * OpenFlow tables in 'ofproto' minus 1, inclusive. | |
1272 | * | |
1273 | * For read-only tables, only the name may be configured. */ | |
1274 | void | |
1275 | ofproto_configure_table(struct ofproto *ofproto, int table_id, | |
1276 | const struct ofproto_table_settings *s) | |
1277 | { | |
1278 | struct oftable *table; | |
1279 | ||
cb22974d | 1280 | ovs_assert(table_id >= 0 && table_id < ofproto->n_tables); |
254750ce BP |
1281 | table = &ofproto->tables[table_id]; |
1282 | ||
1283 | oftable_set_name(table, s->name); | |
1284 | ||
1285 | if (table->flags & OFTABLE_READONLY) { | |
1286 | return; | |
1287 | } | |
1288 | ||
1289 | if (s->groups) { | |
1290 | oftable_enable_eviction(table, s->groups, s->n_groups); | |
1291 | } else { | |
1292 | oftable_disable_eviction(table); | |
1293 | } | |
1294 | ||
1295 | table->max_flows = s->max_flows; | |
afae68b1 | 1296 | |
f358a2cb JR |
1297 | if (classifier_set_prefix_fields(&table->cls, |
1298 | s->prefix_fields, s->n_prefix_fields)) { | |
1299 | /* XXX: Trigger revalidation. */ | |
1300 | } | |
834fe5cb BP |
1301 | |
1302 | ovs_mutex_lock(&ofproto_mutex); | |
1303 | evict_rules_from_table(table, 0); | |
1304 | ovs_mutex_unlock(&ofproto_mutex); | |
254750ce BP |
1305 | } |
1306 | \f | |
81e2083f BP |
1307 | bool |
1308 | ofproto_has_snoops(const struct ofproto *ofproto) | |
1309 | { | |
1310 | return connmgr_has_snoops(ofproto->connmgr); | |
1311 | } | |
1312 | ||
064af421 | 1313 | void |
81e2083f | 1314 | ofproto_get_snoops(const struct ofproto *ofproto, struct sset *snoops) |
064af421 | 1315 | { |
19a87e36 | 1316 | connmgr_get_snoops(ofproto->connmgr, snoops); |
064af421 BP |
1317 | } |
1318 | ||
15aaf599 | 1319 | static void |
b20f4073 | 1320 | ofproto_rule_delete__(struct rule *rule, uint8_t reason) |
15aaf599 BP |
1321 | OVS_REQUIRES(ofproto_mutex) |
1322 | { | |
9ca4a86f | 1323 | struct rule_collection rules; |
15aaf599 | 1324 | |
9ca4a86f BP |
1325 | rules.rules = rules.stub; |
1326 | rules.n = 1; | |
1327 | rules.stub[0] = rule; | |
1328 | delete_flows__(&rules, reason, NULL); | |
15aaf599 BP |
1329 | } |
1330 | ||
a73fcd71 | 1331 | /* Deletes 'rule' from 'ofproto'. |
8037acb4 | 1332 | * |
b74cb5d8 BP |
1333 | * Within an ofproto implementation, this function allows an ofproto |
1334 | * implementation to destroy any rules that remain when its ->destruct() | |
1335 | * function is called. This function is not suitable for use elsewhere in an | |
1336 | * ofproto implementation. | |
1337 | * | |
b74cb5d8 | 1338 | * This function implements steps 4.4 and 4.5 in the section titled "Rule Life |
8b81d1ef | 1339 | * Cycle" in ofproto-provider.h. */ |
b74cb5d8 | 1340 | void |
8b81d1ef | 1341 | ofproto_rule_delete(struct ofproto *ofproto, struct rule *rule) |
15aaf599 | 1342 | OVS_EXCLUDED(ofproto_mutex) |
7ee20df1 | 1343 | { |
834fe5cb BP |
1344 | /* This skips the ofmonitor and flow-removed notifications because the |
1345 | * switch is being deleted and any OpenFlow channels have been or soon will | |
1346 | * be killed. */ | |
15aaf599 | 1347 | ovs_mutex_lock(&ofproto_mutex); |
8b81d1ef | 1348 | oftable_remove_rule__(ofproto, rule); |
8037acb4 | 1349 | ofproto->ofproto_class->rule_delete(rule); |
15aaf599 | 1350 | ovs_mutex_unlock(&ofproto_mutex); |
8037acb4 BP |
1351 | } |
1352 | ||
1353 | static void | |
1354 | ofproto_flush__(struct ofproto *ofproto) | |
15aaf599 | 1355 | OVS_EXCLUDED(ofproto_mutex) |
8037acb4 | 1356 | { |
d0918789 | 1357 | struct oftable *table; |
7ee20df1 | 1358 | |
3948503a | 1359 | /* This will flush all datapath flows. */ |
7ee20df1 BP |
1360 | if (ofproto->ofproto_class->flush) { |
1361 | ofproto->ofproto_class->flush(ofproto); | |
1362 | } | |
1363 | ||
3948503a JR |
1364 | /* XXX: There is a small race window here, where new datapath flows can be |
1365 | * created by upcall handlers based on the existing flow table. We can not | |
1366 | * call ofproto class flush while holding 'ofproto_mutex' to prevent this, | |
1367 | * as then we could deadlock on syncing with the handler threads waiting on | |
1368 | * the same mutex. */ | |
1369 | ||
15aaf599 | 1370 | ovs_mutex_lock(&ofproto_mutex); |
b772ded8 | 1371 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
78c8df12 | 1372 | struct rule *rule; |
7ee20df1 | 1373 | |
5c67e4af BP |
1374 | if (table->flags & OFTABLE_HIDDEN) { |
1375 | continue; | |
1376 | } | |
1377 | ||
78c8df12 | 1378 | CLS_FOR_EACH_SAFE (rule, cr, &table->cls) { |
b20f4073 | 1379 | ofproto_rule_delete__(rule, OFPRR_DELETE); |
7ee20df1 BP |
1380 | } |
1381 | } | |
3948503a JR |
1382 | /* XXX: Concurrent handler threads may insert new learned flows based on |
1383 | * learn actions of the now deleted flows right after we release | |
1384 | * 'ofproto_mutex'. */ | |
15aaf599 | 1385 | ovs_mutex_unlock(&ofproto_mutex); |
7ee20df1 BP |
1386 | } |
1387 | ||
7395c052 NZ |
1388 | static void delete_group(struct ofproto *ofproto, uint32_t group_id); |
1389 | ||
abe529af BP |
1390 | static void |
1391 | ofproto_destroy__(struct ofproto *ofproto) | |
15aaf599 | 1392 | OVS_EXCLUDED(ofproto_mutex) |
abe529af | 1393 | { |
d0918789 | 1394 | struct oftable *table; |
6c1491fb | 1395 | |
35412852 | 1396 | destroy_rule_executes(ofproto); |
7395c052 | 1397 | delete_group(ofproto, OFPG_ALL); |
5c09b672 GS |
1398 | |
1399 | guarded_list_destroy(&ofproto->rule_executes); | |
7395c052 NZ |
1400 | ovs_rwlock_destroy(&ofproto->groups_rwlock); |
1401 | hmap_destroy(&ofproto->groups); | |
1402 | ||
abe529af BP |
1403 | hmap_remove(&all_ofprotos, &ofproto->hmap_node); |
1404 | free(ofproto->name); | |
955a7127 | 1405 | free(ofproto->type); |
abe529af BP |
1406 | free(ofproto->mfr_desc); |
1407 | free(ofproto->hw_desc); | |
1408 | free(ofproto->sw_desc); | |
1409 | free(ofproto->serial_desc); | |
1410 | free(ofproto->dp_desc); | |
abe529af | 1411 | hmap_destroy(&ofproto->ports); |
fdcea803 | 1412 | hmap_destroy(&ofproto->ofport_usage); |
abe529af | 1413 | shash_destroy(&ofproto->port_by_name); |
e1b1d06a | 1414 | simap_destroy(&ofproto->ofp_requests); |
6c1491fb | 1415 | |
b772ded8 | 1416 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
d0918789 | 1417 | oftable_destroy(table); |
6c1491fb BP |
1418 | } |
1419 | free(ofproto->tables); | |
fa066f01 | 1420 | |
1406c79b BP |
1421 | ovs_assert(hindex_is_empty(&ofproto->cookies)); |
1422 | hindex_destroy(&ofproto->cookies); | |
1423 | ||
35f48b8b BP |
1424 | ovs_assert(hmap_is_empty(&ofproto->learned_cookies)); |
1425 | hmap_destroy(&ofproto->learned_cookies); | |
1426 | ||
52a90c29 BP |
1427 | free(ofproto->vlan_bitmap); |
1428 | ||
abe529af BP |
1429 | ofproto->ofproto_class->dealloc(ofproto); |
1430 | } | |
fa066f01 | 1431 | |
064af421 BP |
1432 | void |
1433 | ofproto_destroy(struct ofproto *p) | |
15aaf599 | 1434 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 1435 | { |
ca0f572c | 1436 | struct ofport *ofport, *next_ofport; |
fdcea803 | 1437 | struct ofport_usage *usage, *next_usage; |
064af421 BP |
1438 | |
1439 | if (!p) { | |
1440 | return; | |
1441 | } | |
1442 | ||
717de9ff JR |
1443 | if (p->meters) { |
1444 | meter_delete(p, 1, p->meter_features.max_meters); | |
1445 | p->meter_features.max_meters = 0; | |
1446 | free(p->meters); | |
1447 | p->meters = NULL; | |
1448 | } | |
1449 | ||
7ee20df1 | 1450 | ofproto_flush__(p); |
4e8e4213 | 1451 | HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) { |
abe529af | 1452 | ofport_destroy(ofport); |
064af421 | 1453 | } |
064af421 | 1454 | |
fdcea803 GS |
1455 | HMAP_FOR_EACH_SAFE (usage, next_usage, hmap_node, &p->ofport_usage) { |
1456 | hmap_remove(&p->ofport_usage, &usage->hmap_node); | |
1457 | free(usage); | |
1458 | } | |
1459 | ||
abe529af | 1460 | p->ofproto_class->destruct(p); |
58f19539 DDP |
1461 | |
1462 | /* We should not postpone this because it involves deleting a listening | |
1463 | * socket which we may want to reopen soon. 'connmgr' should not be used | |
1464 | * by other threads */ | |
1465 | connmgr_destroy(p->connmgr); | |
1466 | ||
f416c8d6 JR |
1467 | /* Destroying rules is deferred, must have 'ofproto' around for them. */ |
1468 | ovsrcu_postpone(ofproto_destroy__, p); | |
064af421 BP |
1469 | } |
1470 | ||
abe529af BP |
1471 | /* Destroys the datapath with the respective 'name' and 'type'. With the Linux |
1472 | * kernel datapath, for example, this destroys the datapath in the kernel, and | |
1473 | * with the netdev-based datapath, it tears down the data structures that | |
1474 | * represent the datapath. | |
1475 | * | |
1476 | * The datapath should not be currently open as an ofproto. */ | |
064af421 | 1477 | int |
abe529af | 1478 | ofproto_delete(const char *name, const char *type) |
064af421 | 1479 | { |
abe529af BP |
1480 | const struct ofproto_class *class = ofproto_class_find__(type); |
1481 | return (!class ? EAFNOSUPPORT | |
1482 | : !class->del ? EACCES | |
1483 | : class->del(type, name)); | |
064af421 BP |
1484 | } |
1485 | ||
e9e28be3 BP |
1486 | static void |
1487 | process_port_change(struct ofproto *ofproto, int error, char *devname) | |
1488 | { | |
1489 | if (error == ENOBUFS) { | |
1490 | reinit_ports(ofproto); | |
1491 | } else if (!error) { | |
1492 | update_port(ofproto, devname); | |
1493 | free(devname); | |
1494 | } | |
1495 | } | |
1496 | ||
11a574a7 JP |
1497 | int |
1498 | ofproto_type_run(const char *datapath_type) | |
1499 | { | |
1500 | const struct ofproto_class *class; | |
1501 | int error; | |
1502 | ||
1503 | datapath_type = ofproto_normalize_type(datapath_type); | |
1504 | class = ofproto_class_find__(datapath_type); | |
1505 | ||
1506 | error = class->type_run ? class->type_run(datapath_type) : 0; | |
1507 | if (error && error != EAGAIN) { | |
1508 | VLOG_ERR_RL(&rl, "%s: type_run failed (%s)", | |
10a89ef0 | 1509 | datapath_type, ovs_strerror(error)); |
11a574a7 JP |
1510 | } |
1511 | return error; | |
1512 | } | |
1513 | ||
11a574a7 JP |
1514 | void |
1515 | ofproto_type_wait(const char *datapath_type) | |
1516 | { | |
1517 | const struct ofproto_class *class; | |
1518 | ||
1519 | datapath_type = ofproto_normalize_type(datapath_type); | |
1520 | class = ofproto_class_find__(datapath_type); | |
1521 | ||
1522 | if (class->type_wait) { | |
1523 | class->type_wait(datapath_type); | |
1524 | } | |
1525 | } | |
1526 | ||
064af421 | 1527 | int |
abe529af | 1528 | ofproto_run(struct ofproto *p) |
064af421 | 1529 | { |
064af421 | 1530 | int error; |
da4a6191 | 1531 | uint64_t new_seq; |
064af421 | 1532 | |
abe529af | 1533 | error = p->ofproto_class->run(p); |
5fcc0d00 | 1534 | if (error && error != EAGAIN) { |
10a89ef0 | 1535 | VLOG_ERR_RL(&rl, "%s: run failed (%s)", p->name, ovs_strerror(error)); |
149f577a JG |
1536 | } |
1537 | ||
35412852 BP |
1538 | run_rule_executes(p); |
1539 | ||
448c2fa8 EJ |
1540 | /* Restore the eviction group heap invariant occasionally. */ |
1541 | if (p->eviction_group_timer < time_msec()) { | |
1542 | size_t i; | |
1543 | ||
1544 | p->eviction_group_timer = time_msec() + 1000; | |
1545 | ||
1546 | for (i = 0; i < p->n_tables; i++) { | |
1547 | struct oftable *table = &p->tables[i]; | |
1548 | struct eviction_group *evg; | |
448c2fa8 EJ |
1549 | struct rule *rule; |
1550 | ||
1551 | if (!table->eviction_fields) { | |
1552 | continue; | |
1553 | } | |
1554 | ||
1a9bb326 EJ |
1555 | if (classifier_count(&table->cls) > 100000) { |
1556 | static struct vlog_rate_limit count_rl = | |
1557 | VLOG_RATE_LIMIT_INIT(1, 1); | |
1558 | VLOG_WARN_RL(&count_rl, "Table %"PRIuSIZE" has an excessive" | |
1559 | " number of rules: %d", i, | |
1560 | classifier_count(&table->cls)); | |
1561 | } | |
1562 | ||
15aaf599 | 1563 | ovs_mutex_lock(&ofproto_mutex); |
5f0476ce | 1564 | CLS_FOR_EACH (rule, cr, &table->cls) { |
6d56c1f1 K |
1565 | if (rule->idle_timeout || rule->hard_timeout) { |
1566 | if (!rule->eviction_group) { | |
1567 | eviction_group_add_rule(rule); | |
1568 | } else { | |
1569 | heap_raw_change(&rule->evg_node, | |
1570 | rule_eviction_priority(p, rule)); | |
1571 | } | |
448c2fa8 EJ |
1572 | } |
1573 | } | |
6d56c1f1 K |
1574 | |
1575 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { | |
1576 | heap_rebuild(&evg->rules); | |
1577 | } | |
15aaf599 | 1578 | ovs_mutex_unlock(&ofproto_mutex); |
448c2fa8 EJ |
1579 | } |
1580 | } | |
1581 | ||
5bf0e941 | 1582 | if (p->ofproto_class->port_poll) { |
7436ed80 BP |
1583 | char *devname; |
1584 | ||
5bf0e941 BP |
1585 | while ((error = p->ofproto_class->port_poll(p, &devname)) != EAGAIN) { |
1586 | process_port_change(p, error, devname); | |
064af421 | 1587 | } |
e9e28be3 | 1588 | } |
031d8bff | 1589 | |
da4a6191 JS |
1590 | new_seq = seq_read(connectivity_seq_get()); |
1591 | if (new_seq != p->change_seq) { | |
1592 | struct sset devnames; | |
1593 | const char *devname; | |
1594 | struct ofport *ofport; | |
1595 | ||
1596 | /* Update OpenFlow port status for any port whose netdev has changed. | |
1597 | * | |
1598 | * Refreshing a given 'ofport' can cause an arbitrary ofport to be | |
1599 | * destroyed, so it's not safe to update ports directly from the | |
1600 | * HMAP_FOR_EACH loop, or even to use HMAP_FOR_EACH_SAFE. Instead, we | |
1601 | * need this two-phase approach. */ | |
1602 | sset_init(&devnames); | |
1603 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
61501798 AW |
1604 | uint64_t port_change_seq; |
1605 | ||
1606 | port_change_seq = netdev_get_change_seq(ofport->netdev); | |
1607 | if (ofport->change_seq != port_change_seq) { | |
1608 | ofport->change_seq = port_change_seq; | |
1609 | sset_add(&devnames, netdev_get_name(ofport->netdev)); | |
1610 | } | |
031d8bff | 1611 | } |
da4a6191 JS |
1612 | SSET_FOR_EACH (devname, &devnames) { |
1613 | update_port(p, devname); | |
1614 | } | |
1615 | sset_destroy(&devnames); | |
1616 | ||
1617 | p->change_seq = new_seq; | |
064af421 BP |
1618 | } |
1619 | ||
834fe5cb | 1620 | connmgr_run(p->connmgr, handle_openflow); |
064af421 | 1621 | |
5fcc0d00 BP |
1622 | return error; |
1623 | } | |
1624 | ||
064af421 BP |
1625 | void |
1626 | ofproto_wait(struct ofproto *p) | |
1627 | { | |
abe529af | 1628 | p->ofproto_class->wait(p); |
5bf0e941 BP |
1629 | if (p->ofproto_class->port_poll_wait) { |
1630 | p->ofproto_class->port_poll_wait(p); | |
e7934396 | 1631 | } |
da4a6191 | 1632 | seq_wait(connectivity_seq_get(), p->change_seq); |
834fe5cb | 1633 | connmgr_wait(p->connmgr); |
064af421 BP |
1634 | } |
1635 | ||
064af421 BP |
1636 | bool |
1637 | ofproto_is_alive(const struct ofproto *p) | |
1638 | { | |
19a87e36 | 1639 | return connmgr_has_controllers(p->connmgr); |
064af421 BP |
1640 | } |
1641 | ||
0d085684 BP |
1642 | /* Adds some memory usage statistics for 'ofproto' into 'usage', for use with |
1643 | * memory_report(). */ | |
1644 | void | |
1645 | ofproto_get_memory_usage(const struct ofproto *ofproto, struct simap *usage) | |
1646 | { | |
1647 | const struct oftable *table; | |
1648 | unsigned int n_rules; | |
1649 | ||
1650 | simap_increase(usage, "ports", hmap_count(&ofproto->ports)); | |
15aaf599 | 1651 | |
0d085684 BP |
1652 | n_rules = 0; |
1653 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
1654 | n_rules += classifier_count(&table->cls); | |
1655 | } | |
1656 | simap_increase(usage, "rules", n_rules); | |
1657 | ||
1658 | if (ofproto->ofproto_class->get_memory_usage) { | |
1659 | ofproto->ofproto_class->get_memory_usage(ofproto, usage); | |
1660 | } | |
1661 | ||
1662 | connmgr_get_memory_usage(ofproto->connmgr, usage); | |
1663 | } | |
1664 | ||
1c030aa5 EJ |
1665 | void |
1666 | ofproto_type_get_memory_usage(const char *datapath_type, struct simap *usage) | |
1667 | { | |
1668 | const struct ofproto_class *class; | |
1669 | ||
1670 | datapath_type = ofproto_normalize_type(datapath_type); | |
1671 | class = ofproto_class_find__(datapath_type); | |
1672 | ||
1673 | if (class && class->type_get_memory_usage) { | |
1674 | class->type_get_memory_usage(datapath_type, usage); | |
1675 | } | |
1676 | } | |
1677 | ||
bffc0589 | 1678 | void |
2cdcb898 | 1679 | ofproto_get_ofproto_controller_info(const struct ofproto *ofproto, |
bffc0589 AE |
1680 | struct shash *info) |
1681 | { | |
19a87e36 | 1682 | connmgr_get_controller_info(ofproto->connmgr, info); |
bffc0589 AE |
1683 | } |
1684 | ||
1685 | void | |
1686 | ofproto_free_ofproto_controller_info(struct shash *info) | |
1687 | { | |
72ba2ed3 | 1688 | connmgr_free_controller_info(info); |
bffc0589 AE |
1689 | } |
1690 | ||
b5827b24 BP |
1691 | /* Makes a deep copy of 'old' into 'port'. */ |
1692 | void | |
1693 | ofproto_port_clone(struct ofproto_port *port, const struct ofproto_port *old) | |
1694 | { | |
1695 | port->name = xstrdup(old->name); | |
1696 | port->type = xstrdup(old->type); | |
1697 | port->ofp_port = old->ofp_port; | |
1698 | } | |
1699 | ||
1700 | /* Frees memory allocated to members of 'ofproto_port'. | |
3a6ccc8c | 1701 | * |
b5827b24 BP |
1702 | * Do not call this function on an ofproto_port obtained from |
1703 | * ofproto_port_dump_next(): that function retains ownership of the data in the | |
1704 | * ofproto_port. */ | |
1705 | void | |
1706 | ofproto_port_destroy(struct ofproto_port *ofproto_port) | |
1707 | { | |
1708 | free(ofproto_port->name); | |
1709 | free(ofproto_port->type); | |
1710 | } | |
1711 | ||
b5827b24 | 1712 | /* Initializes 'dump' to begin dumping the ports in an ofproto. |
3a6ccc8c | 1713 | * |
b5827b24 BP |
1714 | * This function provides no status indication. An error status for the entire |
1715 | * dump operation is provided when it is completed by calling | |
1716 | * ofproto_port_dump_done(). | |
1717 | */ | |
1718 | void | |
1719 | ofproto_port_dump_start(struct ofproto_port_dump *dump, | |
1720 | const struct ofproto *ofproto) | |
1721 | { | |
abe529af BP |
1722 | dump->ofproto = ofproto; |
1723 | dump->error = ofproto->ofproto_class->port_dump_start(ofproto, | |
1724 | &dump->state); | |
b5827b24 BP |
1725 | } |
1726 | ||
1727 | /* Attempts to retrieve another port from 'dump', which must have been created | |
1728 | * with ofproto_port_dump_start(). On success, stores a new ofproto_port into | |
1729 | * 'port' and returns true. On failure, returns false. | |
1730 | * | |
1731 | * Failure might indicate an actual error or merely that the last port has been | |
1732 | * dumped. An error status for the entire dump operation is provided when it | |
1733 | * is completed by calling ofproto_port_dump_done(). | |
1734 | * | |
1735 | * The ofproto owns the data stored in 'port'. It will remain valid until at | |
1736 | * least the next time 'dump' is passed to ofproto_port_dump_next() or | |
1737 | * ofproto_port_dump_done(). */ | |
1738 | bool | |
1739 | ofproto_port_dump_next(struct ofproto_port_dump *dump, | |
1740 | struct ofproto_port *port) | |
1741 | { | |
abe529af BP |
1742 | const struct ofproto *ofproto = dump->ofproto; |
1743 | ||
1744 | if (dump->error) { | |
1745 | return false; | |
1746 | } | |
b5827b24 | 1747 | |
abe529af BP |
1748 | dump->error = ofproto->ofproto_class->port_dump_next(ofproto, dump->state, |
1749 | port); | |
1750 | if (dump->error) { | |
1751 | ofproto->ofproto_class->port_dump_done(ofproto, dump->state); | |
1752 | return false; | |
b5827b24 | 1753 | } |
abe529af | 1754 | return true; |
b5827b24 BP |
1755 | } |
1756 | ||
1757 | /* Completes port table dump operation 'dump', which must have been created | |
1758 | * with ofproto_port_dump_start(). Returns 0 if the dump operation was | |
1759 | * error-free, otherwise a positive errno value describing the problem. */ | |
3a6ccc8c | 1760 | int |
b5827b24 | 1761 | ofproto_port_dump_done(struct ofproto_port_dump *dump) |
3a6ccc8c | 1762 | { |
abe529af BP |
1763 | const struct ofproto *ofproto = dump->ofproto; |
1764 | if (!dump->error) { | |
1765 | dump->error = ofproto->ofproto_class->port_dump_done(ofproto, | |
1766 | dump->state); | |
1767 | } | |
1768 | return dump->error == EOF ? 0 : dump->error; | |
b5827b24 BP |
1769 | } |
1770 | ||
0aeaabc8 JP |
1771 | /* Returns the type to pass to netdev_open() when a datapath of type |
1772 | * 'datapath_type' has a port of type 'port_type', for a few special | |
1773 | * cases when a netdev type differs from a port type. For example, when | |
1774 | * using the userspace datapath, a port of type "internal" needs to be | |
1775 | * opened as "tap". | |
1776 | * | |
1777 | * Returns either 'type' itself or a string literal, which must not be | |
1778 | * freed. */ | |
1779 | const char * | |
1780 | ofproto_port_open_type(const char *datapath_type, const char *port_type) | |
1781 | { | |
1782 | const struct ofproto_class *class; | |
1783 | ||
1784 | datapath_type = ofproto_normalize_type(datapath_type); | |
1785 | class = ofproto_class_find__(datapath_type); | |
1786 | if (!class) { | |
1787 | return port_type; | |
1788 | } | |
1789 | ||
1790 | return (class->port_open_type | |
1791 | ? class->port_open_type(datapath_type, port_type) | |
1792 | : port_type); | |
1793 | } | |
1794 | ||
81816a5f JP |
1795 | /* Attempts to add 'netdev' as a port on 'ofproto'. If 'ofp_portp' is |
1796 | * non-null and '*ofp_portp' is not OFPP_NONE, attempts to use that as | |
1797 | * the port's OpenFlow port number. | |
1798 | * | |
1799 | * If successful, returns 0 and sets '*ofp_portp' to the new port's | |
1800 | * OpenFlow port number (if 'ofp_portp' is non-null). On failure, | |
1801 | * returns a positive errno value and sets '*ofp_portp' to OFPP_NONE (if | |
1802 | * 'ofp_portp' is non-null). */ | |
b5827b24 BP |
1803 | int |
1804 | ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev, | |
4e022ec0 | 1805 | ofp_port_t *ofp_portp) |
b5827b24 | 1806 | { |
4e022ec0 | 1807 | ofp_port_t ofp_port = ofp_portp ? *ofp_portp : OFPP_NONE; |
3a6ccc8c BP |
1808 | int error; |
1809 | ||
e1b1d06a | 1810 | error = ofproto->ofproto_class->port_add(ofproto, netdev); |
1fa24dea | 1811 | if (!error) { |
e1b1d06a JP |
1812 | const char *netdev_name = netdev_get_name(netdev); |
1813 | ||
4e022ec0 AW |
1814 | simap_put(&ofproto->ofp_requests, netdev_name, |
1815 | ofp_to_u16(ofp_port)); | |
e1b1d06a | 1816 | update_port(ofproto, netdev_name); |
1fa24dea | 1817 | } |
b5827b24 | 1818 | if (ofp_portp) { |
17f69db5 BP |
1819 | *ofp_portp = OFPP_NONE; |
1820 | if (!error) { | |
1821 | struct ofproto_port ofproto_port; | |
1822 | ||
1823 | error = ofproto_port_query_by_name(ofproto, | |
1824 | netdev_get_name(netdev), | |
1825 | &ofproto_port); | |
1826 | if (!error) { | |
1827 | *ofp_portp = ofproto_port.ofp_port; | |
1828 | ofproto_port_destroy(&ofproto_port); | |
1829 | } | |
1830 | } | |
3a6ccc8c BP |
1831 | } |
1832 | return error; | |
1833 | } | |
1834 | ||
b5827b24 BP |
1835 | /* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and |
1836 | * initializes '*port' appropriately; on failure, returns a positive errno | |
1837 | * value. | |
1838 | * | |
abe529af | 1839 | * The caller owns the data in 'ofproto_port' and must free it with |
b5827b24 BP |
1840 | * ofproto_port_destroy() when it is no longer needed. */ |
1841 | int | |
1842 | ofproto_port_query_by_name(const struct ofproto *ofproto, const char *devname, | |
1843 | struct ofproto_port *port) | |
a4e2e1f2 | 1844 | { |
b5827b24 BP |
1845 | int error; |
1846 | ||
abe529af BP |
1847 | error = ofproto->ofproto_class->port_query_by_name(ofproto, devname, port); |
1848 | if (error) { | |
1849 | memset(port, 0, sizeof *port); | |
b5827b24 BP |
1850 | } |
1851 | return error; | |
a4e2e1f2 EJ |
1852 | } |
1853 | ||
b5827b24 | 1854 | /* Deletes port number 'ofp_port' from the datapath for 'ofproto'. |
3a6ccc8c | 1855 | * Returns 0 if successful, otherwise a positive errno. */ |
064af421 | 1856 | int |
4e022ec0 | 1857 | ofproto_port_del(struct ofproto *ofproto, ofp_port_t ofp_port) |
064af421 | 1858 | { |
abe529af | 1859 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1264ec95 | 1860 | const char *name = ofport ? netdev_get_name(ofport->netdev) : "<unknown>"; |
e1b1d06a | 1861 | struct simap_node *ofp_request_node; |
3cf10406 | 1862 | int error; |
cdee00fd | 1863 | |
e1b1d06a JP |
1864 | ofp_request_node = simap_find(&ofproto->ofp_requests, name); |
1865 | if (ofp_request_node) { | |
1866 | simap_delete(&ofproto->ofp_requests, ofp_request_node); | |
1867 | } | |
1868 | ||
abe529af | 1869 | error = ofproto->ofproto_class->port_del(ofproto, ofp_port); |
892815f5 | 1870 | if (!error && ofport) { |
1264ec95 BP |
1871 | /* 'name' is the netdev's name and update_port() is going to close the |
1872 | * netdev. Just in case update_port() refers to 'name' after it | |
3a6ccc8c BP |
1873 | * destroys 'ofport', make a copy of it around the update_port() |
1874 | * call. */ | |
1875 | char *devname = xstrdup(name); | |
1876 | update_port(ofproto, devname); | |
1877 | free(devname); | |
3cf10406 BP |
1878 | } |
1879 | return error; | |
064af421 BP |
1880 | } |
1881 | ||
276f6518 SH |
1882 | static void |
1883 | flow_mod_init(struct ofputil_flow_mod *fm, | |
eb391b76 | 1884 | const struct match *match, int priority, |
276f6518 SH |
1885 | const struct ofpact *ofpacts, size_t ofpacts_len, |
1886 | enum ofp_flow_mod_command command) | |
1887 | { | |
1888 | memset(fm, 0, sizeof *fm); | |
1889 | fm->match = *match; | |
1890 | fm->priority = priority; | |
1891 | fm->cookie = 0; | |
1892 | fm->new_cookie = 0; | |
1893 | fm->modify_cookie = false; | |
1894 | fm->table_id = 0; | |
1895 | fm->command = command; | |
1896 | fm->idle_timeout = 0; | |
1897 | fm->hard_timeout = 0; | |
ca26eb44 | 1898 | fm->importance = 0; |
276f6518 SH |
1899 | fm->buffer_id = UINT32_MAX; |
1900 | fm->out_port = OFPP_ANY; | |
1901 | fm->out_group = OFPG_ANY; | |
1902 | fm->flags = 0; | |
1903 | fm->ofpacts = CONST_CAST(struct ofpact *, ofpacts); | |
1904 | fm->ofpacts_len = ofpacts_len; | |
cc40d06b | 1905 | fm->delete_reason = OFPRR_DELETE; |
276f6518 SH |
1906 | } |
1907 | ||
97f63e57 BP |
1908 | static int |
1909 | simple_flow_mod(struct ofproto *ofproto, | |
eb391b76 | 1910 | const struct match *match, int priority, |
97f63e57 BP |
1911 | const struct ofpact *ofpacts, size_t ofpacts_len, |
1912 | enum ofp_flow_mod_command command) | |
1913 | { | |
1914 | struct ofputil_flow_mod fm; | |
1915 | ||
276f6518 | 1916 | flow_mod_init(&fm, match, priority, ofpacts, ofpacts_len, command); |
15aaf599 | 1917 | |
baae3d02 | 1918 | return handle_flow_mod__(ofproto, &fm, NULL); |
97f63e57 BP |
1919 | } |
1920 | ||
6c1491fb | 1921 | /* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and |
fa8b054f BP |
1922 | * performs the 'n_actions' actions in 'actions'. The new flow will not |
1923 | * timeout. | |
1924 | * | |
1925 | * If cls_rule->priority is in the range of priorities supported by OpenFlow | |
1926 | * (0...65535, inclusive) then the flow will be visible to OpenFlow | |
1927 | * controllers; otherwise, it will be hidden. | |
1928 | * | |
f25d0cf3 | 1929 | * The caller retains ownership of 'cls_rule' and 'ofpacts'. |
6c1491fb BP |
1930 | * |
1931 | * This is a helper function for in-band control and fail-open. */ | |
064af421 | 1932 | void |
81a76618 | 1933 | ofproto_add_flow(struct ofproto *ofproto, const struct match *match, |
eb391b76 | 1934 | int priority, |
f25d0cf3 | 1935 | const struct ofpact *ofpacts, size_t ofpacts_len) |
15aaf599 | 1936 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 1937 | { |
7ee20df1 | 1938 | const struct rule *rule; |
6f00e29b | 1939 | bool must_add; |
7ee20df1 | 1940 | |
97f63e57 BP |
1941 | /* First do a cheap check whether the rule we're looking for already exists |
1942 | * with the actions that we want. If it does, then we're done. */ | |
81a76618 BP |
1943 | rule = rule_from_cls_rule(classifier_find_match_exactly( |
1944 | &ofproto->tables[0].cls, match, priority)); | |
6f00e29b | 1945 | if (rule) { |
dc723c44 | 1946 | const struct rule_actions *actions = rule_get_actions(rule); |
06a0f3e2 | 1947 | must_add = !ofpacts_equal(actions->ofpacts, actions->ofpacts_len, |
6f00e29b | 1948 | ofpacts, ofpacts_len); |
6f00e29b BP |
1949 | } else { |
1950 | must_add = true; | |
1951 | } | |
97f63e57 BP |
1952 | |
1953 | /* If there's no such rule or the rule doesn't have the actions we want, | |
1954 | * fall back to a executing a full flow mod. We can't optimize this at | |
1955 | * all because we didn't take enough locks above to ensure that the flow | |
1956 | * table didn't already change beneath us. */ | |
6f00e29b | 1957 | if (must_add) { |
97f63e57 BP |
1958 | simple_flow_mod(ofproto, match, priority, ofpacts, ofpacts_len, |
1959 | OFPFC_MODIFY_STRICT); | |
7ee20df1 | 1960 | } |
064af421 BP |
1961 | } |
1962 | ||
75a75043 | 1963 | /* Executes the flow modification specified in 'fm'. Returns 0 on success, an |
90bf1e07 BP |
1964 | * OFPERR_* OpenFlow error code on failure, or OFPROTO_POSTPONE if the |
1965 | * operation cannot be initiated now but may be retried later. | |
75a75043 | 1966 | * |
1b63b91e BP |
1967 | * This is a helper function for in-band control and fail-open and the "learn" |
1968 | * action. */ | |
75a75043 | 1969 | int |
e3b56933 | 1970 | ofproto_flow_mod(struct ofproto *ofproto, struct ofputil_flow_mod *fm) |
15aaf599 | 1971 | OVS_EXCLUDED(ofproto_mutex) |
75a75043 | 1972 | { |
b90d6ee5 JR |
1973 | /* Optimize for the most common case of a repeated learn action. |
1974 | * If an identical flow already exists we only need to update its | |
1975 | * 'modified' time. */ | |
1976 | if (fm->command == OFPFC_MODIFY_STRICT && fm->table_id != OFPTT_ALL | |
1977 | && !(fm->flags & OFPUTIL_FF_RESET_COUNTS)) { | |
1978 | struct oftable *table = &ofproto->tables[fm->table_id]; | |
b90d6ee5 JR |
1979 | struct rule *rule; |
1980 | bool done = false; | |
1981 | ||
0ef165ec EJ |
1982 | rule = rule_from_cls_rule(classifier_find_match_exactly(&table->cls, |
1983 | &fm->match, | |
1984 | fm->priority)); | |
b90d6ee5 JR |
1985 | if (rule) { |
1986 | /* Reading many of the rule fields and writing on 'modified' | |
1987 | * requires the rule->mutex. Also, rule->actions may change | |
1988 | * if rule->mutex is not held. */ | |
06a0f3e2 BP |
1989 | const struct rule_actions *actions; |
1990 | ||
b90d6ee5 | 1991 | ovs_mutex_lock(&rule->mutex); |
06a0f3e2 | 1992 | actions = rule_get_actions(rule); |
b90d6ee5 JR |
1993 | if (rule->idle_timeout == fm->idle_timeout |
1994 | && rule->hard_timeout == fm->hard_timeout | |
ca26eb44 | 1995 | && rule->importance == fm->importance |
b90d6ee5 JR |
1996 | && rule->flags == (fm->flags & OFPUTIL_FF_STATE) |
1997 | && (!fm->modify_cookie || (fm->new_cookie == rule->flow_cookie)) | |
1998 | && ofpacts_equal(fm->ofpacts, fm->ofpacts_len, | |
06a0f3e2 | 1999 | actions->ofpacts, actions->ofpacts_len)) { |
b90d6ee5 JR |
2000 | /* Rule already exists and need not change, only update the |
2001 | modified timestamp. */ | |
2002 | rule->modified = time_msec(); | |
2003 | done = true; | |
2004 | } | |
2005 | ovs_mutex_unlock(&rule->mutex); | |
2006 | } | |
b90d6ee5 JR |
2007 | |
2008 | if (done) { | |
2009 | return 0; | |
2010 | } | |
2011 | } | |
2012 | ||
baae3d02 | 2013 | return handle_flow_mod__(ofproto, fm, NULL); |
75a75043 BP |
2014 | } |
2015 | ||
6c1491fb BP |
2016 | /* Searches for a rule with matching criteria exactly equal to 'target' in |
2017 | * ofproto's table 0 and, if it finds one, deletes it. | |
2018 | * | |
2019 | * This is a helper function for in-band control and fail-open. */ | |
b20f4073 | 2020 | void |
81a76618 | 2021 | ofproto_delete_flow(struct ofproto *ofproto, |
eb391b76 | 2022 | const struct match *target, int priority) |
15aaf599 | 2023 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 2024 | { |
8037acb4 | 2025 | struct classifier *cls = &ofproto->tables[0].cls; |
064af421 BP |
2026 | struct rule *rule; |
2027 | ||
97f63e57 BP |
2028 | /* First do a cheap check whether the rule we're looking for has already |
2029 | * been deleted. If so, then we're done. */ | |
8037acb4 BP |
2030 | rule = rule_from_cls_rule(classifier_find_match_exactly(cls, target, |
2031 | priority)); | |
834fe5cb BP |
2032 | if (!rule) { |
2033 | return; | |
bcf84111 | 2034 | } |
834fe5cb BP |
2035 | |
2036 | /* Execute a flow mod. We can't optimize this at all because we didn't | |
2037 | * take enough locks above to ensure that the flow table didn't already | |
2038 | * change beneath us. */ | |
2039 | simple_flow_mod(ofproto, target, priority, NULL, 0, OFPFC_DELETE_STRICT); | |
142e1f5c BP |
2040 | } |
2041 | ||
834fe5cb BP |
2042 | /* Delete all of the flows from all of ofproto's flow tables, then reintroduce |
2043 | * the flows required by in-band control and fail-open. */ | |
142e1f5c BP |
2044 | void |
2045 | ofproto_flush_flows(struct ofproto *ofproto) | |
2046 | { | |
7ee20df1 | 2047 | COVERAGE_INC(ofproto_flush); |
834fe5cb BP |
2048 | ofproto_flush__(ofproto); |
2049 | connmgr_flushed(ofproto->connmgr); | |
064af421 BP |
2050 | } |
2051 | \f | |
2052 | static void | |
2053 | reinit_ports(struct ofproto *p) | |
2054 | { | |
abe529af | 2055 | struct ofproto_port_dump dump; |
b3c01ed3 | 2056 | struct sset devnames; |
064af421 | 2057 | struct ofport *ofport; |
abe529af | 2058 | struct ofproto_port ofproto_port; |
b3c01ed3 | 2059 | const char *devname; |
064af421 | 2060 | |
898bf89d JP |
2061 | COVERAGE_INC(ofproto_reinit_ports); |
2062 | ||
b3c01ed3 | 2063 | sset_init(&devnames); |
4e8e4213 | 2064 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { |
1264ec95 | 2065 | sset_add(&devnames, netdev_get_name(ofport->netdev)); |
064af421 | 2066 | } |
abe529af BP |
2067 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { |
2068 | sset_add(&devnames, ofproto_port.name); | |
064af421 | 2069 | } |
064af421 | 2070 | |
b3c01ed3 BP |
2071 | SSET_FOR_EACH (devname, &devnames) { |
2072 | update_port(p, devname); | |
064af421 | 2073 | } |
b3c01ed3 | 2074 | sset_destroy(&devnames); |
064af421 BP |
2075 | } |
2076 | ||
4e022ec0 | 2077 | static ofp_port_t |
e1b1d06a JP |
2078 | alloc_ofp_port(struct ofproto *ofproto, const char *netdev_name) |
2079 | { | |
4e022ec0 | 2080 | uint16_t port_idx; |
e1b1d06a | 2081 | |
4e022ec0 | 2082 | port_idx = simap_get(&ofproto->ofp_requests, netdev_name); |
430dbb14 | 2083 | port_idx = port_idx ? port_idx : UINT16_MAX; |
4e022ec0 | 2084 | |
430dbb14 | 2085 | if (port_idx >= ofproto->max_ports |
fdcea803 GS |
2086 | || ofport_get_usage(ofproto, u16_to_ofp(port_idx)) == LLONG_MAX) { |
2087 | uint16_t lru_ofport = 0, end_port_no = ofproto->alloc_port_no; | |
2088 | long long int last_used_at, lru = LLONG_MAX; | |
e1b1d06a | 2089 | |
e1b1d06a JP |
2090 | /* Search for a free OpenFlow port number. We try not to |
2091 | * immediately reuse them to prevent problems due to old | |
484c8355 BP |
2092 | * flows. |
2093 | * | |
2094 | * We limit the automatically assigned port numbers to the lower half | |
2095 | * of the port range, to reserve the upper half for assignment by | |
2096 | * controllers. */ | |
6033d9d9 | 2097 | for (;;) { |
484c8355 | 2098 | if (++ofproto->alloc_port_no >= MIN(ofproto->max_ports, 32768)) { |
fdcea803 | 2099 | ofproto->alloc_port_no = 1; |
6033d9d9 | 2100 | } |
fdcea803 GS |
2101 | last_used_at = ofport_get_usage(ofproto, |
2102 | u16_to_ofp(ofproto->alloc_port_no)); | |
2103 | if (!last_used_at) { | |
430dbb14 | 2104 | port_idx = ofproto->alloc_port_no; |
6033d9d9 | 2105 | break; |
865b26a4 GS |
2106 | } else if ( last_used_at < time_msec() - 60*60*1000) { |
2107 | /* If the port with ofport 'ofproto->alloc_port_no' was deleted | |
2108 | * more than an hour ago, consider it usable. */ | |
2109 | ofport_remove_usage(ofproto, | |
2110 | u16_to_ofp(ofproto->alloc_port_no)); | |
2111 | port_idx = ofproto->alloc_port_no; | |
2112 | break; | |
fdcea803 GS |
2113 | } else if (last_used_at < lru) { |
2114 | lru = last_used_at; | |
2115 | lru_ofport = ofproto->alloc_port_no; | |
e1b1d06a | 2116 | } |
fdcea803 | 2117 | |
430dbb14 | 2118 | if (ofproto->alloc_port_no == end_port_no) { |
fdcea803 GS |
2119 | if (lru_ofport) { |
2120 | port_idx = lru_ofport; | |
2121 | break; | |
2122 | } | |
6033d9d9 | 2123 | return OFPP_NONE; |
e1b1d06a JP |
2124 | } |
2125 | } | |
2126 | } | |
fdcea803 | 2127 | ofport_set_usage(ofproto, u16_to_ofp(port_idx), LLONG_MAX); |
4e022ec0 | 2128 | return u16_to_ofp(port_idx); |
e1b1d06a JP |
2129 | } |
2130 | ||
2131 | static void | |
fdcea803 | 2132 | dealloc_ofp_port(struct ofproto *ofproto, ofp_port_t ofp_port) |
e1b1d06a | 2133 | { |
430dbb14 | 2134 | if (ofp_to_u16(ofp_port) < ofproto->max_ports) { |
fdcea803 | 2135 | ofport_set_usage(ofproto, ofp_port, time_msec()); |
40fa9417 | 2136 | } |
e1b1d06a JP |
2137 | } |
2138 | ||
fbfa2911 BP |
2139 | /* Opens and returns a netdev for 'ofproto_port' in 'ofproto', or a null |
2140 | * pointer if the netdev cannot be opened. On success, also fills in | |
d7d92203 | 2141 | * '*pp'. */ |
b33951b8 | 2142 | static struct netdev * |
e1b1d06a JP |
2143 | ofport_open(struct ofproto *ofproto, |
2144 | struct ofproto_port *ofproto_port, | |
9e1fd49b | 2145 | struct ofputil_phy_port *pp) |
064af421 BP |
2146 | { |
2147 | enum netdev_flags flags; | |
064af421 | 2148 | struct netdev *netdev; |
064af421 BP |
2149 | int error; |
2150 | ||
18812dff | 2151 | error = netdev_open(ofproto_port->name, ofproto_port->type, &netdev); |
064af421 | 2152 | if (error) { |
fbfa2911 | 2153 | VLOG_WARN_RL(&rl, "%s: ignoring port %s (%"PRIu16") because netdev %s " |
064af421 | 2154 | "cannot be opened (%s)", |
fbfa2911 | 2155 | ofproto->name, |
abe529af | 2156 | ofproto_port->name, ofproto_port->ofp_port, |
10a89ef0 | 2157 | ofproto_port->name, ovs_strerror(error)); |
064af421 BP |
2158 | return NULL; |
2159 | } | |
2160 | ||
e1b1d06a JP |
2161 | if (ofproto_port->ofp_port == OFPP_NONE) { |
2162 | if (!strcmp(ofproto->name, ofproto_port->name)) { | |
2163 | ofproto_port->ofp_port = OFPP_LOCAL; | |
2164 | } else { | |
2165 | ofproto_port->ofp_port = alloc_ofp_port(ofproto, | |
2166 | ofproto_port->name); | |
2167 | } | |
2168 | } | |
9e1fd49b BP |
2169 | pp->port_no = ofproto_port->ofp_port; |
2170 | netdev_get_etheraddr(netdev, pp->hw_addr); | |
2171 | ovs_strlcpy(pp->name, ofproto_port->name, sizeof pp->name); | |
064af421 | 2172 | netdev_get_flags(netdev, &flags); |
9e1fd49b BP |
2173 | pp->config = flags & NETDEV_UP ? 0 : OFPUTIL_PC_PORT_DOWN; |
2174 | pp->state = netdev_get_carrier(netdev) ? 0 : OFPUTIL_PS_LINK_DOWN; | |
2175 | netdev_get_features(netdev, &pp->curr, &pp->advertised, | |
2176 | &pp->supported, &pp->peer); | |
cd65125d BP |
2177 | pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000; |
2178 | pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000; | |
118c4676 | 2179 | |
b33951b8 | 2180 | return netdev; |
064af421 BP |
2181 | } |
2182 | ||
b33951b8 | 2183 | /* Returns true if most fields of 'a' and 'b' are equal. Differences in name, |
d7d92203 | 2184 | * port number, and 'config' bits other than OFPUTIL_PC_PORT_DOWN are |
b33951b8 BP |
2185 | * disregarded. */ |
2186 | static bool | |
9e1fd49b BP |
2187 | ofport_equal(const struct ofputil_phy_port *a, |
2188 | const struct ofputil_phy_port *b) | |
064af421 | 2189 | { |
9e1fd49b | 2190 | return (eth_addr_equals(a->hw_addr, b->hw_addr) |
064af421 | 2191 | && a->state == b->state |
9e1fd49b | 2192 | && !((a->config ^ b->config) & OFPUTIL_PC_PORT_DOWN) |
064af421 BP |
2193 | && a->curr == b->curr |
2194 | && a->advertised == b->advertised | |
2195 | && a->supported == b->supported | |
9e1fd49b BP |
2196 | && a->peer == b->peer |
2197 | && a->curr_speed == b->curr_speed | |
2198 | && a->max_speed == b->max_speed); | |
064af421 BP |
2199 | } |
2200 | ||
b33951b8 BP |
2201 | /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'. |
2202 | * The caller must ensure that 'p' does not have a conflicting ofport (that is, | |
2203 | * one with the same name or port number). */ | |
064af421 | 2204 | static void |
b33951b8 | 2205 | ofport_install(struct ofproto *p, |
9e1fd49b | 2206 | struct netdev *netdev, const struct ofputil_phy_port *pp) |
064af421 | 2207 | { |
b33951b8 BP |
2208 | const char *netdev_name = netdev_get_name(netdev); |
2209 | struct ofport *ofport; | |
abe529af | 2210 | int error; |
72b06300 | 2211 | |
b33951b8 | 2212 | /* Create ofport. */ |
abe529af BP |
2213 | ofport = p->ofproto_class->port_alloc(); |
2214 | if (!ofport) { | |
2215 | error = ENOMEM; | |
2216 | goto error; | |
2217 | } | |
0f7d71a5 | 2218 | ofport->ofproto = p; |
b33951b8 | 2219 | ofport->netdev = netdev; |
61501798 | 2220 | ofport->change_seq = netdev_get_change_seq(netdev); |
9e1fd49b BP |
2221 | ofport->pp = *pp; |
2222 | ofport->ofp_port = pp->port_no; | |
65e0be10 | 2223 | ofport->created = time_msec(); |
b33951b8 BP |
2224 | |
2225 | /* Add port to 'p'. */ | |
4e022ec0 | 2226 | hmap_insert(&p->ports, &ofport->hmap_node, |
f9c0c3ec | 2227 | hash_ofp_port(ofport->ofp_port)); |
72b06300 | 2228 | shash_add(&p->port_by_name, netdev_name, ofport); |
abe529af | 2229 | |
ada3428f | 2230 | update_mtu(p, ofport); |
9197df76 | 2231 | |
abe529af BP |
2232 | /* Let the ofproto_class initialize its private data. */ |
2233 | error = p->ofproto_class->port_construct(ofport); | |
2234 | if (error) { | |
2235 | goto error; | |
2236 | } | |
2a6f78e0 | 2237 | connmgr_send_port_status(p->connmgr, NULL, pp, OFPPR_ADD); |
abe529af BP |
2238 | return; |
2239 | ||
2240 | error: | |
2241 | VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)", | |
10a89ef0 | 2242 | p->name, netdev_name, ovs_strerror(error)); |
abe529af BP |
2243 | if (ofport) { |
2244 | ofport_destroy__(ofport); | |
2245 | } else { | |
2246 | netdev_close(netdev); | |
72b06300 | 2247 | } |
064af421 BP |
2248 | } |
2249 | ||
b33951b8 | 2250 | /* Removes 'ofport' from 'p' and destroys it. */ |
064af421 | 2251 | static void |
0f7d71a5 | 2252 | ofport_remove(struct ofport *ofport) |
064af421 | 2253 | { |
2a6f78e0 | 2254 | connmgr_send_port_status(ofport->ofproto->connmgr, NULL, &ofport->pp, |
fa066f01 | 2255 | OFPPR_DELETE); |
abe529af | 2256 | ofport_destroy(ofport); |
b33951b8 BP |
2257 | } |
2258 | ||
2259 | /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and | |
2260 | * destroys it. */ | |
2261 | static void | |
2262 | ofport_remove_with_name(struct ofproto *ofproto, const char *name) | |
2263 | { | |
2264 | struct ofport *port = shash_find_data(&ofproto->port_by_name, name); | |
2265 | if (port) { | |
0f7d71a5 | 2266 | ofport_remove(port); |
b33951b8 BP |
2267 | } |
2268 | } | |
2269 | ||
9e1fd49b | 2270 | /* Updates 'port' with new 'pp' description. |
b33951b8 BP |
2271 | * |
2272 | * Does not handle a name or port number change. The caller must implement | |
2273 | * such a change as a delete followed by an add. */ | |
2274 | static void | |
9e1fd49b | 2275 | ofport_modified(struct ofport *port, struct ofputil_phy_port *pp) |
b33951b8 | 2276 | { |
9e1fd49b BP |
2277 | memcpy(port->pp.hw_addr, pp->hw_addr, ETH_ADDR_LEN); |
2278 | port->pp.config = ((port->pp.config & ~OFPUTIL_PC_PORT_DOWN) | |
2279 | | (pp->config & OFPUTIL_PC_PORT_DOWN)); | |
53fd5c7c BP |
2280 | port->pp.state = ((port->pp.state & ~OFPUTIL_PS_LINK_DOWN) |
2281 | | (pp->state & OFPUTIL_PS_LINK_DOWN)); | |
9e1fd49b BP |
2282 | port->pp.curr = pp->curr; |
2283 | port->pp.advertised = pp->advertised; | |
2284 | port->pp.supported = pp->supported; | |
2285 | port->pp.peer = pp->peer; | |
2286 | port->pp.curr_speed = pp->curr_speed; | |
2287 | port->pp.max_speed = pp->max_speed; | |
b33951b8 | 2288 | |
2a6f78e0 BP |
2289 | connmgr_send_port_status(port->ofproto->connmgr, NULL, |
2290 | &port->pp, OFPPR_MODIFY); | |
064af421 BP |
2291 | } |
2292 | ||
5a2dfd47 JP |
2293 | /* Update OpenFlow 'state' in 'port' and notify controller. */ |
2294 | void | |
9e1fd49b | 2295 | ofproto_port_set_state(struct ofport *port, enum ofputil_port_state state) |
5a2dfd47 | 2296 | { |
9e1fd49b BP |
2297 | if (port->pp.state != state) { |
2298 | port->pp.state = state; | |
2a6f78e0 BP |
2299 | connmgr_send_port_status(port->ofproto->connmgr, NULL, |
2300 | &port->pp, OFPPR_MODIFY); | |
5a2dfd47 JP |
2301 | } |
2302 | } | |
2303 | ||
abe529af | 2304 | void |
4e022ec0 | 2305 | ofproto_port_unregister(struct ofproto *ofproto, ofp_port_t ofp_port) |
e7934396 | 2306 | { |
abe529af BP |
2307 | struct ofport *port = ofproto_get_port(ofproto, ofp_port); |
2308 | if (port) { | |
52a90c29 BP |
2309 | if (port->ofproto->ofproto_class->set_realdev) { |
2310 | port->ofproto->ofproto_class->set_realdev(port, 0, 0); | |
2311 | } | |
b308140a JP |
2312 | if (port->ofproto->ofproto_class->set_stp_port) { |
2313 | port->ofproto->ofproto_class->set_stp_port(port, NULL); | |
2314 | } | |
9efd308e DV |
2315 | if (port->ofproto->ofproto_class->set_rstp_port) { |
2316 | port->ofproto->ofproto_class->set_rstp_port(port, NULL); | |
2317 | } | |
abe529af | 2318 | if (port->ofproto->ofproto_class->set_cfm) { |
a5610457 | 2319 | port->ofproto->ofproto_class->set_cfm(port, NULL); |
abe529af BP |
2320 | } |
2321 | if (port->ofproto->ofproto_class->bundle_remove) { | |
2322 | port->ofproto->ofproto_class->bundle_remove(port); | |
e7934396 BP |
2323 | } |
2324 | } | |
2325 | } | |
2326 | ||
2327 | static void | |
abe529af | 2328 | ofport_destroy__(struct ofport *port) |
e7934396 | 2329 | { |
abe529af BP |
2330 | struct ofproto *ofproto = port->ofproto; |
2331 | const char *name = netdev_get_name(port->netdev); | |
fa066f01 | 2332 | |
abe529af BP |
2333 | hmap_remove(&ofproto->ports, &port->hmap_node); |
2334 | shash_delete(&ofproto->port_by_name, | |
2335 | shash_find(&ofproto->port_by_name, name)); | |
fa066f01 | 2336 | |
abe529af BP |
2337 | netdev_close(port->netdev); |
2338 | ofproto->ofproto_class->port_dealloc(port); | |
e7934396 BP |
2339 | } |
2340 | ||
064af421 | 2341 | static void |
abe529af | 2342 | ofport_destroy(struct ofport *port) |
064af421 | 2343 | { |
fa066f01 | 2344 | if (port) { |
e1b1d06a | 2345 | dealloc_ofp_port(port->ofproto, port->ofp_port); |
abe529af BP |
2346 | port->ofproto->ofproto_class->port_destruct(port); |
2347 | ofport_destroy__(port); | |
2348 | } | |
064af421 BP |
2349 | } |
2350 | ||
abe529af | 2351 | struct ofport * |
4e022ec0 | 2352 | ofproto_get_port(const struct ofproto *ofproto, ofp_port_t ofp_port) |
ca0f572c BP |
2353 | { |
2354 | struct ofport *port; | |
2355 | ||
f9c0c3ec | 2356 | HMAP_FOR_EACH_IN_BUCKET (port, hmap_node, hash_ofp_port(ofp_port), |
4e022ec0 | 2357 | &ofproto->ports) { |
abe529af | 2358 | if (port->ofp_port == ofp_port) { |
ca0f572c BP |
2359 | return port; |
2360 | } | |
2361 | } | |
2362 | return NULL; | |
2363 | } | |
2364 | ||
fdcea803 GS |
2365 | static long long int |
2366 | ofport_get_usage(const struct ofproto *ofproto, ofp_port_t ofp_port) | |
2367 | { | |
2368 | struct ofport_usage *usage; | |
2369 | ||
2370 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2371 | &ofproto->ofport_usage) { | |
2372 | if (usage->ofp_port == ofp_port) { | |
2373 | return usage->last_used; | |
2374 | } | |
2375 | } | |
2376 | return 0; | |
2377 | } | |
2378 | ||
2379 | static void | |
2380 | ofport_set_usage(struct ofproto *ofproto, ofp_port_t ofp_port, | |
2381 | long long int last_used) | |
2382 | { | |
2383 | struct ofport_usage *usage; | |
2384 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2385 | &ofproto->ofport_usage) { | |
2386 | if (usage->ofp_port == ofp_port) { | |
2387 | usage->last_used = last_used; | |
2388 | return; | |
2389 | } | |
2390 | } | |
2391 | ovs_assert(last_used == LLONG_MAX); | |
2392 | ||
2393 | usage = xmalloc(sizeof *usage); | |
2394 | usage->ofp_port = ofp_port; | |
2395 | usage->last_used = last_used; | |
2396 | hmap_insert(&ofproto->ofport_usage, &usage->hmap_node, | |
2397 | hash_ofp_port(ofp_port)); | |
2398 | } | |
2399 | ||
865b26a4 GS |
2400 | static void |
2401 | ofport_remove_usage(struct ofproto *ofproto, ofp_port_t ofp_port) | |
2402 | { | |
2403 | struct ofport_usage *usage; | |
2404 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2405 | &ofproto->ofport_usage) { | |
2406 | if (usage->ofp_port == ofp_port) { | |
2407 | hmap_remove(&ofproto->ofport_usage, &usage->hmap_node); | |
2408 | free(usage); | |
2409 | break; | |
2410 | } | |
2411 | } | |
2412 | } | |
2413 | ||
6527c598 PS |
2414 | int |
2415 | ofproto_port_get_stats(const struct ofport *port, struct netdev_stats *stats) | |
2416 | { | |
2417 | struct ofproto *ofproto = port->ofproto; | |
2418 | int error; | |
2419 | ||
2420 | if (ofproto->ofproto_class->port_get_stats) { | |
2421 | error = ofproto->ofproto_class->port_get_stats(port, stats); | |
2422 | } else { | |
2423 | error = EOPNOTSUPP; | |
2424 | } | |
2425 | ||
2426 | return error; | |
2427 | } | |
2428 | ||
064af421 | 2429 | static void |
b33951b8 | 2430 | update_port(struct ofproto *ofproto, const char *name) |
064af421 | 2431 | { |
abe529af | 2432 | struct ofproto_port ofproto_port; |
9e1fd49b | 2433 | struct ofputil_phy_port pp; |
b33951b8 BP |
2434 | struct netdev *netdev; |
2435 | struct ofport *port; | |
064af421 BP |
2436 | |
2437 | COVERAGE_INC(ofproto_update_port); | |
c874dc6d | 2438 | |
b33951b8 | 2439 | /* Fetch 'name''s location and properties from the datapath. */ |
abe529af | 2440 | netdev = (!ofproto_port_query_by_name(ofproto, name, &ofproto_port) |
fbfa2911 | 2441 | ? ofport_open(ofproto, &ofproto_port, &pp) |
b33951b8 | 2442 | : NULL); |
4e022ec0 | 2443 | |
b33951b8 | 2444 | if (netdev) { |
abe529af | 2445 | port = ofproto_get_port(ofproto, ofproto_port.ofp_port); |
b33951b8 | 2446 | if (port && !strcmp(netdev_get_name(port->netdev), name)) { |
e65942a0 BP |
2447 | struct netdev *old_netdev = port->netdev; |
2448 | ||
b33951b8 | 2449 | /* 'name' hasn't changed location. Any properties changed? */ |
9e1fd49b BP |
2450 | if (!ofport_equal(&port->pp, &pp)) { |
2451 | ofport_modified(port, &pp); | |
abe529af BP |
2452 | } |
2453 | ||
ada3428f | 2454 | update_mtu(ofproto, port); |
9197df76 | 2455 | |
e65942a0 BP |
2456 | /* Install the newly opened netdev in case it has changed. |
2457 | * Don't close the old netdev yet in case port_modified has to | |
2458 | * remove a retained reference to it.*/ | |
abe529af | 2459 | port->netdev = netdev; |
61501798 | 2460 | port->change_seq = netdev_get_change_seq(netdev); |
abe529af BP |
2461 | |
2462 | if (port->ofproto->ofproto_class->port_modified) { | |
2463 | port->ofproto->ofproto_class->port_modified(port); | |
b33951b8 | 2464 | } |
e65942a0 BP |
2465 | |
2466 | netdev_close(old_netdev); | |
b33951b8 BP |
2467 | } else { |
2468 | /* If 'port' is nonnull then its name differs from 'name' and thus | |
2469 | * we should delete it. If we think there's a port named 'name' | |
2470 | * then its port number must be wrong now so delete it too. */ | |
2471 | if (port) { | |
0f7d71a5 | 2472 | ofport_remove(port); |
b33951b8 BP |
2473 | } |
2474 | ofport_remove_with_name(ofproto, name); | |
9e1fd49b | 2475 | ofport_install(ofproto, netdev, &pp); |
c874dc6d | 2476 | } |
b33951b8 BP |
2477 | } else { |
2478 | /* Any port named 'name' is gone now. */ | |
2479 | ofport_remove_with_name(ofproto, name); | |
c874dc6d | 2480 | } |
abe529af | 2481 | ofproto_port_destroy(&ofproto_port); |
064af421 BP |
2482 | } |
2483 | ||
2484 | static int | |
2485 | init_ports(struct ofproto *p) | |
2486 | { | |
abe529af BP |
2487 | struct ofproto_port_dump dump; |
2488 | struct ofproto_port ofproto_port; | |
e1b1d06a | 2489 | struct shash_node *node, *next; |
abe529af BP |
2490 | |
2491 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { | |
e1b1d06a JP |
2492 | const char *name = ofproto_port.name; |
2493 | ||
2494 | if (shash_find(&p->port_by_name, name)) { | |
fbfa2911 | 2495 | VLOG_WARN_RL(&rl, "%s: ignoring duplicate device %s in datapath", |
e1b1d06a | 2496 | p->name, name); |
abe529af | 2497 | } else { |
9e1fd49b | 2498 | struct ofputil_phy_port pp; |
b33951b8 BP |
2499 | struct netdev *netdev; |
2500 | ||
e1b1d06a JP |
2501 | /* Check if an OpenFlow port number had been requested. */ |
2502 | node = shash_find(&init_ofp_ports, name); | |
2503 | if (node) { | |
2504 | const struct iface_hint *iface_hint = node->data; | |
4e022ec0 AW |
2505 | simap_put(&p->ofp_requests, name, |
2506 | ofp_to_u16(iface_hint->ofp_port)); | |
e1b1d06a JP |
2507 | } |
2508 | ||
fbfa2911 | 2509 | netdev = ofport_open(p, &ofproto_port, &pp); |
b33951b8 | 2510 | if (netdev) { |
9e1fd49b | 2511 | ofport_install(p, netdev, &pp); |
430dbb14 | 2512 | if (ofp_to_u16(ofproto_port.ofp_port) < p->max_ports) { |
7c35397c | 2513 | p->alloc_port_no = MAX(p->alloc_port_no, |
430dbb14 | 2514 | ofp_to_u16(ofproto_port.ofp_port)); |
7c35397c | 2515 | } |
064af421 BP |
2516 | } |
2517 | } | |
2518 | } | |
b0ec0f27 | 2519 | |
e1b1d06a | 2520 | SHASH_FOR_EACH_SAFE(node, next, &init_ofp_ports) { |
4f9e08a5 | 2521 | struct iface_hint *iface_hint = node->data; |
e1b1d06a JP |
2522 | |
2523 | if (!strcmp(iface_hint->br_name, p->name)) { | |
2524 | free(iface_hint->br_name); | |
2525 | free(iface_hint->br_type); | |
4f9e08a5 | 2526 | free(iface_hint); |
e1b1d06a JP |
2527 | shash_delete(&init_ofp_ports, node); |
2528 | } | |
2529 | } | |
2530 | ||
064af421 BP |
2531 | return 0; |
2532 | } | |
9197df76 JP |
2533 | |
2534 | /* Find the minimum MTU of all non-datapath devices attached to 'p'. | |
2535 | * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */ | |
2536 | static int | |
2537 | find_min_mtu(struct ofproto *p) | |
2538 | { | |
2539 | struct ofport *ofport; | |
2540 | int mtu = 0; | |
2541 | ||
2542 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2543 | struct netdev *netdev = ofport->netdev; | |
2544 | int dev_mtu; | |
2545 | ||
2546 | /* Skip any internal ports, since that's what we're trying to | |
2547 | * set. */ | |
2548 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
2549 | continue; | |
2550 | } | |
2551 | ||
2552 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2553 | continue; | |
2554 | } | |
2555 | if (!mtu || dev_mtu < mtu) { | |
2556 | mtu = dev_mtu; | |
2557 | } | |
2558 | } | |
2559 | ||
2560 | return mtu ? mtu: ETH_PAYLOAD_MAX; | |
2561 | } | |
2562 | ||
ada3428f PS |
2563 | /* Update MTU of all datapath devices on 'p' to the minimum of the |
2564 | * non-datapath ports in event of 'port' added or changed. */ | |
9197df76 | 2565 | static void |
ada3428f | 2566 | update_mtu(struct ofproto *p, struct ofport *port) |
9197df76 JP |
2567 | { |
2568 | struct ofport *ofport; | |
ada3428f PS |
2569 | struct netdev *netdev = port->netdev; |
2570 | int dev_mtu, old_min; | |
2571 | ||
2572 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2573 | port->mtu = 0; | |
2574 | return; | |
2575 | } | |
2576 | if (!strcmp(netdev_get_type(port->netdev), "internal")) { | |
2577 | if (dev_mtu > p->min_mtu) { | |
2578 | if (!netdev_set_mtu(port->netdev, p->min_mtu)) { | |
2579 | dev_mtu = p->min_mtu; | |
2580 | } | |
2581 | } | |
2582 | port->mtu = dev_mtu; | |
2583 | return; | |
2584 | } | |
2585 | ||
2586 | /* For non-internal port find new min mtu. */ | |
2587 | old_min = p->min_mtu; | |
2588 | port->mtu = dev_mtu; | |
2589 | p->min_mtu = find_min_mtu(p); | |
2590 | if (p->min_mtu == old_min) { | |
2591 | return; | |
2592 | } | |
9197df76 JP |
2593 | |
2594 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2595 | struct netdev *netdev = ofport->netdev; | |
2596 | ||
2597 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
ada3428f PS |
2598 | if (!netdev_set_mtu(netdev, p->min_mtu)) { |
2599 | ofport->mtu = p->min_mtu; | |
2600 | } | |
9197df76 JP |
2601 | } |
2602 | } | |
2603 | } | |
064af421 | 2604 | \f |
f416c8d6 JR |
2605 | static void |
2606 | ofproto_rule_destroy__(struct rule *rule) | |
2607 | OVS_NO_THREAD_SAFETY_ANALYSIS | |
2608 | { | |
2609 | cls_rule_destroy(CONST_CAST(struct cls_rule *, &rule->cr)); | |
2610 | rule_actions_destroy(rule_get_actions(rule)); | |
2611 | ovs_mutex_destroy(&rule->mutex); | |
2612 | rule->ofproto->ofproto_class->rule_dealloc(rule); | |
2613 | } | |
2614 | ||
2615 | static void | |
2616 | rule_destroy_cb(struct rule *rule) | |
2617 | { | |
2618 | rule->ofproto->ofproto_class->rule_destruct(rule); | |
2619 | ofproto_rule_destroy__(rule); | |
2620 | } | |
2621 | ||
a2143702 BP |
2622 | void |
2623 | ofproto_rule_ref(struct rule *rule) | |
064af421 | 2624 | { |
1eae3d33 | 2625 | if (rule) { |
37bec3d3 | 2626 | ovs_refcount_ref(&rule->ref_count); |
a2143702 BP |
2627 | } |
2628 | } | |
2629 | ||
f5d16e55 JR |
2630 | bool |
2631 | ofproto_rule_try_ref(struct rule *rule) | |
2632 | { | |
2633 | if (rule) { | |
2634 | return ovs_refcount_try_ref_rcu(&rule->ref_count); | |
2635 | } | |
2636 | return false; | |
2637 | } | |
2638 | ||
f416c8d6 JR |
2639 | /* Decrements 'rule''s ref_count and schedules 'rule' to be destroyed if the |
2640 | * ref_count reaches 0. | |
2641 | * | |
2642 | * Use of RCU allows short term use (between RCU quiescent periods) without | |
2643 | * keeping a reference. A reference must be taken if the rule needs to | |
2644 | * stay around accross the RCU quiescent periods. */ | |
a2143702 BP |
2645 | void |
2646 | ofproto_rule_unref(struct rule *rule) | |
2647 | { | |
24f83812 | 2648 | if (rule && ovs_refcount_unref_relaxed(&rule->ref_count) == 1) { |
f416c8d6 | 2649 | ovsrcu_postpone(rule_destroy_cb, rule); |
1eae3d33 | 2650 | } |
064af421 BP |
2651 | } |
2652 | ||
809c7548 RW |
2653 | void |
2654 | ofproto_group_ref(struct ofgroup *group) | |
2655 | { | |
2656 | if (group) { | |
2657 | ovs_refcount_ref(&group->ref_count); | |
2658 | } | |
2659 | } | |
2660 | ||
2661 | void | |
2662 | ofproto_group_unref(struct ofgroup *group) | |
2663 | { | |
2664 | if (group && ovs_refcount_unref(&group->ref_count) == 1) { | |
2665 | group->ofproto->ofproto_class->group_destruct(group); | |
2666 | ofputil_bucket_list_destroy(&group->buckets); | |
2667 | group->ofproto->ofproto_class->group_dealloc(group); | |
2668 | } | |
2669 | } | |
2670 | ||
65efd2ab JR |
2671 | static uint32_t get_provider_meter_id(const struct ofproto *, |
2672 | uint32_t of_meter_id); | |
2673 | ||
dc723c44 JR |
2674 | /* Creates and returns a new 'struct rule_actions', whose actions are a copy |
2675 | * of from the 'ofpacts_len' bytes of 'ofpacts'. */ | |
2676 | const struct rule_actions * | |
4c7562c5 | 2677 | rule_actions_create(const struct ofpact *ofpacts, size_t ofpacts_len) |
6f00e29b BP |
2678 | { |
2679 | struct rule_actions *actions; | |
2680 | ||
dc723c44 | 2681 | actions = xmalloc(sizeof *actions + ofpacts_len); |
6f00e29b | 2682 | actions->ofpacts_len = ofpacts_len; |
4c7562c5 | 2683 | actions->has_meter = ofpacts_get_meter(ofpacts, ofpacts_len) != 0; |
dc723c44 | 2684 | memcpy(actions->ofpacts, ofpacts, ofpacts_len); |
65efd2ab | 2685 | |
35f48b8b BP |
2686 | actions->has_learn_with_delete = (next_learn_with_delete(actions, NULL) |
2687 | != NULL); | |
2688 | ||
6f00e29b BP |
2689 | return actions; |
2690 | } | |
2691 | ||
dc723c44 | 2692 | /* Free the actions after the RCU quiescent period is reached. */ |
6f00e29b | 2693 | void |
dc723c44 | 2694 | rule_actions_destroy(const struct rule_actions *actions) |
6f00e29b | 2695 | { |
06a0f3e2 | 2696 | if (actions) { |
dc723c44 | 2697 | ovsrcu_postpone(free, CONST_CAST(struct rule_actions *, actions)); |
6f00e29b BP |
2698 | } |
2699 | } | |
2700 | ||
bcf84111 | 2701 | /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action |
f25d0cf3 | 2702 | * that outputs to 'port' (output to OFPP_FLOOD and OFPP_ALL doesn't count). */ |
cdbdeeda | 2703 | bool |
4e022ec0 | 2704 | ofproto_rule_has_out_port(const struct rule *rule, ofp_port_t port) |
15aaf599 | 2705 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 2706 | { |
06a0f3e2 BP |
2707 | if (port == OFPP_ANY) { |
2708 | return true; | |
2709 | } else { | |
2710 | const struct rule_actions *actions = rule_get_actions(rule); | |
2711 | return ofpacts_output_to_port(actions->ofpacts, | |
2712 | actions->ofpacts_len, port); | |
2713 | } | |
064af421 BP |
2714 | } |
2715 | ||
7395c052 | 2716 | /* Returns true if 'rule' has group and equals group_id. */ |
74e79b7c | 2717 | static bool |
7395c052 | 2718 | ofproto_rule_has_out_group(const struct rule *rule, uint32_t group_id) |
15aaf599 | 2719 | OVS_REQUIRES(ofproto_mutex) |
7395c052 | 2720 | { |
06a0f3e2 BP |
2721 | if (group_id == OFPG_ANY) { |
2722 | return true; | |
2723 | } else { | |
2724 | const struct rule_actions *actions = rule_get_actions(rule); | |
2725 | return ofpacts_output_to_group(actions->ofpacts, | |
2726 | actions->ofpacts_len, group_id); | |
2727 | } | |
7395c052 NZ |
2728 | } |
2729 | ||
35412852 BP |
2730 | static void |
2731 | rule_execute_destroy(struct rule_execute *e) | |
eedc0097 | 2732 | { |
35412852 BP |
2733 | ofproto_rule_unref(e->rule); |
2734 | list_remove(&e->list_node); | |
2735 | free(e); | |
2736 | } | |
eedc0097 | 2737 | |
35412852 BP |
2738 | /* Executes all "rule_execute" operations queued up in ofproto->rule_executes, |
2739 | * by passing them to the ofproto provider. */ | |
2740 | static void | |
2741 | run_rule_executes(struct ofproto *ofproto) | |
15aaf599 | 2742 | OVS_EXCLUDED(ofproto_mutex) |
35412852 BP |
2743 | { |
2744 | struct rule_execute *e, *next; | |
2745 | struct list executes; | |
2746 | ||
2747 | guarded_list_pop_all(&ofproto->rule_executes, &executes); | |
2748 | LIST_FOR_EACH_SAFE (e, next, list_node, &executes) { | |
35412852 BP |
2749 | struct flow flow; |
2750 | ||
b5e7e61a AZ |
2751 | flow_extract(e->packet, NULL, &flow); |
2752 | flow.in_port.ofp_port = e->in_port; | |
35412852 BP |
2753 | ofproto->ofproto_class->rule_execute(e->rule, &flow, e->packet); |
2754 | ||
2755 | rule_execute_destroy(e); | |
2756 | } | |
2757 | } | |
2758 | ||
2759 | /* Destroys and discards all "rule_execute" operations queued up in | |
2760 | * ofproto->rule_executes. */ | |
2761 | static void | |
2762 | destroy_rule_executes(struct ofproto *ofproto) | |
2763 | { | |
2764 | struct rule_execute *e, *next; | |
2765 | struct list executes; | |
2766 | ||
2767 | guarded_list_pop_all(&ofproto->rule_executes, &executes); | |
2768 | LIST_FOR_EACH_SAFE (e, next, list_node, &executes) { | |
2769 | ofpbuf_delete(e->packet); | |
2770 | rule_execute_destroy(e); | |
2771 | } | |
350a665f BP |
2772 | } |
2773 | ||
adcf00ba | 2774 | static bool |
834fe5cb | 2775 | rule_is_readonly(const struct rule *rule) |
5c67e4af | 2776 | { |
834fe5cb BP |
2777 | const struct oftable *table = &rule->ofproto->tables[rule->table_id]; |
2778 | return (table->flags & OFTABLE_READONLY) != 0; | |
5c67e4af | 2779 | } |
fa066f01 | 2780 | \f |
35f48b8b BP |
2781 | static uint32_t |
2782 | hash_learned_cookie(ovs_be64 cookie_, uint8_t table_id) | |
2783 | { | |
2784 | uint64_t cookie = (OVS_FORCE uint64_t) cookie_; | |
2785 | return hash_3words(cookie, cookie >> 32, table_id); | |
2786 | } | |
2787 | ||
2788 | static void | |
2789 | learned_cookies_update_one__(struct ofproto *ofproto, | |
2790 | const struct ofpact_learn *learn, | |
2791 | int delta, struct list *dead_cookies) | |
2792 | OVS_REQUIRES(ofproto_mutex) | |
2793 | { | |
2794 | uint32_t hash = hash_learned_cookie(learn->cookie, learn->table_id); | |
2795 | struct learned_cookie *c; | |
2796 | ||
2797 | HMAP_FOR_EACH_WITH_HASH (c, u.hmap_node, hash, &ofproto->learned_cookies) { | |
2798 | if (c->cookie == learn->cookie && c->table_id == learn->table_id) { | |
2799 | c->n += delta; | |
2800 | ovs_assert(c->n >= 0); | |
2801 | ||
2802 | if (!c->n) { | |
2803 | hmap_remove(&ofproto->learned_cookies, &c->u.hmap_node); | |
2804 | list_push_back(dead_cookies, &c->u.list_node); | |
2805 | } | |
2806 | ||
2807 | return; | |
2808 | } | |
2809 | } | |
2810 | ||
2811 | ovs_assert(delta > 0); | |
2812 | c = xmalloc(sizeof *c); | |
2813 | hmap_insert(&ofproto->learned_cookies, &c->u.hmap_node, hash); | |
2814 | c->cookie = learn->cookie; | |
2815 | c->table_id = learn->table_id; | |
2816 | c->n = delta; | |
2817 | } | |
2818 | ||
2819 | static const struct ofpact_learn * | |
2820 | next_learn_with_delete(const struct rule_actions *actions, | |
2821 | const struct ofpact_learn *start) | |
2822 | { | |
2823 | const struct ofpact *pos; | |
2824 | ||
2825 | for (pos = start ? ofpact_next(&start->ofpact) : actions->ofpacts; | |
2826 | pos < ofpact_end(actions->ofpacts, actions->ofpacts_len); | |
2827 | pos = ofpact_next(pos)) { | |
2828 | if (pos->type == OFPACT_LEARN) { | |
2829 | const struct ofpact_learn *learn = ofpact_get_LEARN(pos); | |
2830 | if (learn->flags & NX_LEARN_F_DELETE_LEARNED) { | |
2831 | return learn; | |
2832 | } | |
2833 | } | |
2834 | } | |
2835 | ||
2836 | return NULL; | |
2837 | } | |
2838 | ||
2839 | static void | |
2840 | learned_cookies_update__(struct ofproto *ofproto, | |
2841 | const struct rule_actions *actions, | |
2842 | int delta, struct list *dead_cookies) | |
2843 | OVS_REQUIRES(ofproto_mutex) | |
2844 | { | |
2845 | if (actions->has_learn_with_delete) { | |
2846 | const struct ofpact_learn *learn; | |
2847 | ||
2848 | for (learn = next_learn_with_delete(actions, NULL); learn; | |
2849 | learn = next_learn_with_delete(actions, learn)) { | |
2850 | learned_cookies_update_one__(ofproto, learn, delta, dead_cookies); | |
2851 | } | |
2852 | } | |
2853 | } | |
2854 | ||
2855 | static void | |
2856 | learned_cookies_inc(struct ofproto *ofproto, | |
2857 | const struct rule_actions *actions) | |
2858 | OVS_REQUIRES(ofproto_mutex) | |
2859 | { | |
2860 | learned_cookies_update__(ofproto, actions, +1, NULL); | |
2861 | } | |
2862 | ||
2863 | static void | |
2864 | learned_cookies_dec(struct ofproto *ofproto, | |
2865 | const struct rule_actions *actions, | |
2866 | struct list *dead_cookies) | |
2867 | OVS_REQUIRES(ofproto_mutex) | |
2868 | { | |
2869 | learned_cookies_update__(ofproto, actions, -1, dead_cookies); | |
2870 | } | |
2871 | ||
2872 | static void | |
2873 | learned_cookies_flush(struct ofproto *ofproto, struct list *dead_cookies) | |
2874 | OVS_REQUIRES(ofproto_mutex) | |
2875 | { | |
2876 | struct learned_cookie *c, *next; | |
2877 | ||
2878 | LIST_FOR_EACH_SAFE (c, next, u.list_node, dead_cookies) { | |
2879 | struct rule_criteria criteria; | |
2880 | struct rule_collection rules; | |
2881 | struct match match; | |
2882 | ||
2883 | match_init_catchall(&match); | |
2884 | rule_criteria_init(&criteria, c->table_id, &match, 0, | |
2885 | c->cookie, OVS_BE64_MAX, OFPP_ANY, OFPG_ANY); | |
2886 | rule_criteria_require_rw(&criteria, false); | |
2887 | collect_rules_loose(ofproto, &criteria, &rules); | |
2888 | delete_flows__(&rules, OFPRR_DELETE, NULL); | |
2889 | rule_criteria_destroy(&criteria); | |
2890 | rule_collection_destroy(&rules); | |
2891 | ||
2892 | list_remove(&c->u.list_node); | |
2893 | free(c); | |
2894 | } | |
2895 | } | |
2896 | \f | |
90bf1e07 | 2897 | static enum ofperr |
d1e2cf21 | 2898 | handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2899 | { |
b0421aa2 | 2900 | ofconn_send_reply(ofconn, make_echo_reply(oh)); |
064af421 | 2901 | return 0; |
064af421 BP |
2902 | } |
2903 | ||
3c1bb396 BP |
2904 | static void |
2905 | query_tables(struct ofproto *ofproto, | |
2906 | struct ofputil_table_features **featuresp, | |
2907 | struct ofputil_table_stats **statsp) | |
2908 | { | |
178742f9 BP |
2909 | struct mf_bitmap rw_fields = oxm_writable_fields(); |
2910 | struct mf_bitmap match = oxm_matchable_fields(); | |
2911 | struct mf_bitmap mask = oxm_maskable_fields(); | |
3c1bb396 BP |
2912 | |
2913 | struct ofputil_table_features *features; | |
2914 | struct ofputil_table_stats *stats; | |
2915 | int i; | |
2916 | ||
3c1bb396 BP |
2917 | features = *featuresp = xcalloc(ofproto->n_tables, sizeof *features); |
2918 | for (i = 0; i < ofproto->n_tables; i++) { | |
2919 | struct ofputil_table_features *f = &features[i]; | |
2920 | ||
2921 | f->table_id = i; | |
2922 | sprintf(f->name, "table%d", i); | |
2923 | f->metadata_match = OVS_BE64_MAX; | |
2924 | f->metadata_write = OVS_BE64_MAX; | |
afcea9ea | 2925 | atomic_read_relaxed(&ofproto->tables[i].miss_config, &f->miss_config); |
3c1bb396 BP |
2926 | f->max_entries = 1000000; |
2927 | ||
2928 | bitmap_set_multiple(f->nonmiss.next, i + 1, | |
2929 | ofproto->n_tables - (i + 1), true); | |
2930 | f->nonmiss.instructions = (1u << N_OVS_INSTRUCTIONS) - 1; | |
2931 | if (i == ofproto->n_tables - 1) { | |
2932 | f->nonmiss.instructions &= ~(1u << OVSINST_OFPIT11_GOTO_TABLE); | |
2933 | } | |
2934 | f->nonmiss.write.ofpacts = (UINT64_C(1) << N_OFPACTS) - 1; | |
2935 | f->nonmiss.write.set_fields = rw_fields; | |
2936 | f->nonmiss.apply = f->nonmiss.write; | |
2937 | f->miss = f->nonmiss; | |
2938 | ||
2939 | f->match = match; | |
2940 | f->mask = mask; | |
2941 | f->wildcard = match; | |
2942 | } | |
2943 | ||
2944 | if (statsp) { | |
2945 | stats = *statsp = xcalloc(ofproto->n_tables, sizeof *stats); | |
2946 | for (i = 0; i < ofproto->n_tables; i++) { | |
2947 | struct ofputil_table_stats *s = &stats[i]; | |
2948 | struct classifier *cls = &ofproto->tables[i].cls; | |
2949 | ||
2950 | s->table_id = i; | |
2951 | s->active_count = classifier_count(cls); | |
2952 | } | |
2953 | } else { | |
2954 | stats = NULL; | |
2955 | } | |
2956 | ||
2957 | ofproto->ofproto_class->query_tables(ofproto, features, stats); | |
2958 | ||
2959 | for (i = 0; i < ofproto->n_tables; i++) { | |
2960 | const struct oftable *table = &ofproto->tables[i]; | |
2961 | struct ofputil_table_features *f = &features[i]; | |
2962 | ||
2963 | if (table->name) { | |
2964 | ovs_strzcpy(f->name, table->name, sizeof f->name); | |
2965 | } | |
2966 | ||
2967 | if (table->max_flows < f->max_entries) { | |
2968 | f->max_entries = table->max_flows; | |
2969 | } | |
2970 | } | |
2971 | } | |
2972 | ||
2973 | static void | |
2974 | query_switch_features(struct ofproto *ofproto, | |
2975 | bool *arp_match_ip, uint64_t *ofpacts) | |
2976 | { | |
2977 | struct ofputil_table_features *features, *f; | |
2978 | ||
2979 | *arp_match_ip = false; | |
2980 | *ofpacts = 0; | |
2981 | ||
2982 | query_tables(ofproto, &features, NULL); | |
2983 | for (f = features; f < &features[ofproto->n_tables]; f++) { | |
2984 | *ofpacts |= f->nonmiss.apply.ofpacts | f->miss.apply.ofpacts; | |
2985 | if (bitmap_is_set(f->match.bm, MFF_ARP_SPA) || | |
2986 | bitmap_is_set(f->match.bm, MFF_ARP_TPA)) { | |
2987 | *arp_match_ip = true; | |
2988 | } | |
2989 | } | |
2990 | free(features); | |
2991 | ||
2992 | /* Sanity check. */ | |
2993 | ovs_assert(*ofpacts & (UINT64_C(1) << OFPACT_OUTPUT)); | |
2994 | } | |
2995 | ||
90bf1e07 | 2996 | static enum ofperr |
d1e2cf21 | 2997 | handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2998 | { |
64ff1d96 | 2999 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
9e1fd49b | 3000 | struct ofputil_switch_features features; |
064af421 | 3001 | struct ofport *port; |
6c1491fb | 3002 | bool arp_match_ip; |
9e1fd49b | 3003 | struct ofpbuf *b; |
064af421 | 3004 | |
3c1bb396 | 3005 | query_switch_features(ofproto, &arp_match_ip, &features.ofpacts); |
064af421 | 3006 | |
9e1fd49b BP |
3007 | features.datapath_id = ofproto->datapath_id; |
3008 | features.n_buffers = pktbuf_capacity(); | |
adcf00ba | 3009 | features.n_tables = ofproto_get_n_visible_tables(ofproto); |
9e1fd49b | 3010 | features.capabilities = (OFPUTIL_C_FLOW_STATS | OFPUTIL_C_TABLE_STATS | |
4efe455d BP |
3011 | OFPUTIL_C_PORT_STATS | OFPUTIL_C_QUEUE_STATS | |
3012 | OFPUTIL_C_GROUP_STATS); | |
6c1491fb | 3013 | if (arp_match_ip) { |
9e1fd49b | 3014 | features.capabilities |= OFPUTIL_C_ARP_MATCH_IP; |
6c1491fb | 3015 | } |
2e1ae200 JR |
3016 | /* FIXME: Fill in proper features.auxiliary_id for auxiliary connections */ |
3017 | features.auxiliary_id = 0; | |
9e1fd49b BP |
3018 | b = ofputil_encode_switch_features(&features, ofconn_get_protocol(ofconn), |
3019 | oh->xid); | |
64ff1d96 | 3020 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
9e1fd49b | 3021 | ofputil_put_switch_features_port(&port->pp, b); |
064af421 | 3022 | } |
064af421 | 3023 | |
9e1fd49b | 3024 | ofconn_send_reply(ofconn, b); |
064af421 BP |
3025 | return 0; |
3026 | } | |
064af421 | 3027 | |
90bf1e07 | 3028 | static enum ofperr |
d1e2cf21 | 3029 | handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3030 | { |
64ff1d96 | 3031 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 | 3032 | struct ofp_switch_config *osc; |
f0fd1a17 | 3033 | enum ofp_config_flags flags; |
7257b535 | 3034 | struct ofpbuf *buf; |
959a2ecd | 3035 | |
064af421 | 3036 | /* Send reply. */ |
982697a4 BP |
3037 | buf = ofpraw_alloc_reply(OFPRAW_OFPT_GET_CONFIG_REPLY, oh, 0); |
3038 | osc = ofpbuf_put_uninit(buf, sizeof *osc); | |
f0fd1a17 | 3039 | flags = ofproto->frag_handling; |
2e1ae200 JR |
3040 | /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */ |
3041 | if (oh->version < OFP13_VERSION | |
3042 | && ofconn_get_invalid_ttl_to_controller(ofconn)) { | |
f0fd1a17 PS |
3043 | flags |= OFPC_INVALID_TTL_TO_CONTROLLER; |
3044 | } | |
3045 | osc->flags = htons(flags); | |
810605a2 | 3046 | osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn)); |
b0421aa2 | 3047 | ofconn_send_reply(ofconn, buf); |
2d70a31a | 3048 | |
064af421 BP |
3049 | return 0; |
3050 | } | |
064af421 | 3051 | |
90bf1e07 | 3052 | static enum ofperr |
982697a4 | 3053 | handle_set_config(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3054 | { |
982697a4 | 3055 | const struct ofp_switch_config *osc = ofpmsg_body(oh); |
64ff1d96 | 3056 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
d1e2cf21 | 3057 | uint16_t flags = ntohs(osc->flags); |
2d70a31a | 3058 | |
7257b535 | 3059 | if (ofconn_get_type(ofconn) != OFCONN_PRIMARY |
f4f1ea7e | 3060 | || ofconn_get_role(ofconn) != OFPCR12_ROLE_SLAVE) { |
7257b535 BP |
3061 | enum ofp_config_flags cur = ofproto->frag_handling; |
3062 | enum ofp_config_flags next = flags & OFPC_FRAG_MASK; | |
3063 | ||
cb22974d | 3064 | ovs_assert((cur & OFPC_FRAG_MASK) == cur); |
7257b535 BP |
3065 | if (cur != next) { |
3066 | if (ofproto->ofproto_class->set_frag_handling(ofproto, next)) { | |
3067 | ofproto->frag_handling = next; | |
3068 | } else { | |
3069 | VLOG_WARN_RL(&rl, "%s: unsupported fragment handling mode %s", | |
3070 | ofproto->name, | |
3071 | ofputil_frag_handling_to_string(next)); | |
3072 | } | |
064af421 BP |
3073 | } |
3074 | } | |
2e1ae200 | 3075 | /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */ |
f0fd1a17 | 3076 | ofconn_set_invalid_ttl_to_controller(ofconn, |
2e1ae200 JR |
3077 | (oh->version < OFP13_VERSION |
3078 | && flags & OFPC_INVALID_TTL_TO_CONTROLLER)); | |
ebe482fd | 3079 | |
810605a2 | 3080 | ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len)); |
0ad9b732 | 3081 | |
064af421 | 3082 | return 0; |
064af421 BP |
3083 | } |
3084 | ||
9deba63b | 3085 | /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow |
90bf1e07 BP |
3086 | * error message code for the caller to propagate upward. Otherwise, returns |
3087 | * 0. | |
3088 | * | |
3089 | * The log message mentions 'msg_type'. */ | |
3090 | static enum ofperr | |
3091 | reject_slave_controller(struct ofconn *ofconn) | |
9deba63b | 3092 | { |
1ce0a5fa | 3093 | if (ofconn_get_type(ofconn) == OFCONN_PRIMARY |
f4f1ea7e | 3094 | && ofconn_get_role(ofconn) == OFPCR12_ROLE_SLAVE) { |
90bf1e07 | 3095 | return OFPERR_OFPBRC_EPERM; |
9deba63b BP |
3096 | } else { |
3097 | return 0; | |
3098 | } | |
3099 | } | |
3100 | ||
7e9f8266 BP |
3101 | /* Checks that the 'ofpacts_len' bytes of action in 'ofpacts' are appropriate |
3102 | * for 'ofproto': | |
3103 | * | |
3104 | * - If they use a meter, then 'ofproto' has that meter configured. | |
3105 | * | |
3106 | * - If they use any groups, then 'ofproto' has that group configured. | |
3107 | * | |
3108 | * Returns 0 if successful, otherwise an OpenFlow error. */ | |
9cae45dc JR |
3109 | static enum ofperr |
3110 | ofproto_check_ofpacts(struct ofproto *ofproto, | |
7e9f8266 | 3111 | const struct ofpact ofpacts[], size_t ofpacts_len) |
9cae45dc | 3112 | { |
84d68566 | 3113 | const struct ofpact *a; |
9cae45dc JR |
3114 | uint32_t mid; |
3115 | ||
7e9f8266 BP |
3116 | mid = ofpacts_get_meter(ofpacts, ofpacts_len); |
3117 | if (mid && get_provider_meter_id(ofproto, mid) == UINT32_MAX) { | |
3118 | return OFPERR_OFPMMFC_INVALID_METER; | |
9cae45dc JR |
3119 | } |
3120 | ||
84d68566 | 3121 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
7e9f8266 BP |
3122 | if (a->type == OFPACT_GROUP |
3123 | && !ofproto_group_exists(ofproto, ofpact_get_GROUP(a)->group_id)) { | |
3124 | return OFPERR_OFPBAC_BAD_OUT_GROUP; | |
84d68566 SH |
3125 | } |
3126 | } | |
3127 | ||
9cae45dc JR |
3128 | return 0; |
3129 | } | |
3130 | ||
90bf1e07 | 3131 | static enum ofperr |
982697a4 | 3132 | handle_packet_out(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3133 | { |
64ff1d96 | 3134 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
c6a93eb7 BP |
3135 | struct ofputil_packet_out po; |
3136 | struct ofpbuf *payload; | |
f25d0cf3 BP |
3137 | uint64_t ofpacts_stub[1024 / 8]; |
3138 | struct ofpbuf ofpacts; | |
ae412e7d | 3139 | struct flow flow; |
90bf1e07 | 3140 | enum ofperr error; |
064af421 | 3141 | |
ac51afaf BP |
3142 | COVERAGE_INC(ofproto_packet_out); |
3143 | ||
76589937 | 3144 | error = reject_slave_controller(ofconn); |
9deba63b | 3145 | if (error) { |
f25d0cf3 | 3146 | goto exit; |
9deba63b BP |
3147 | } |
3148 | ||
c6a93eb7 | 3149 | /* Decode message. */ |
f25d0cf3 | 3150 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
982697a4 | 3151 | error = ofputil_decode_packet_out(&po, oh, &ofpacts); |
064af421 | 3152 | if (error) { |
f25d0cf3 | 3153 | goto exit_free_ofpacts; |
064af421 | 3154 | } |
430dbb14 | 3155 | if (ofp_to_u16(po.in_port) >= p->max_ports |
4e022ec0 | 3156 | && ofp_to_u16(po.in_port) < ofp_to_u16(OFPP_MAX)) { |
2e1bfcb6 | 3157 | error = OFPERR_OFPBRC_BAD_PORT; |
91858960 BP |
3158 | goto exit_free_ofpacts; |
3159 | } | |
064af421 | 3160 | |
ac51afaf | 3161 | /* Get payload. */ |
c6a93eb7 BP |
3162 | if (po.buffer_id != UINT32_MAX) { |
3163 | error = ofconn_pktbuf_retrieve(ofconn, po.buffer_id, &payload, NULL); | |
3164 | if (error || !payload) { | |
f25d0cf3 | 3165 | goto exit_free_ofpacts; |
064af421 | 3166 | } |
064af421 | 3167 | } else { |
bb622f82 BP |
3168 | /* Ensure that the L3 header is 32-bit aligned. */ |
3169 | payload = ofpbuf_clone_data_with_headroom(po.packet, po.packet_len, 2); | |
e1154f71 BP |
3170 | } |
3171 | ||
548de4dd | 3172 | /* Verify actions against packet, then send packet if successful. */ |
b5e7e61a AZ |
3173 | flow_extract(payload, NULL, &flow); |
3174 | flow.in_port.ofp_port = po.in_port; | |
7e9f8266 | 3175 | error = ofproto_check_ofpacts(p, po.ofpacts, po.ofpacts_len); |
548de4dd BP |
3176 | if (!error) { |
3177 | error = p->ofproto_class->packet_out(p, payload, &flow, | |
3178 | po.ofpacts, po.ofpacts_len); | |
3179 | } | |
c6a93eb7 | 3180 | ofpbuf_delete(payload); |
abe529af | 3181 | |
f25d0cf3 BP |
3182 | exit_free_ofpacts: |
3183 | ofpbuf_uninit(&ofpacts); | |
3184 | exit: | |
abe529af | 3185 | return error; |
064af421 BP |
3186 | } |
3187 | ||
3188 | static void | |
2a6f78e0 | 3189 | update_port_config(struct ofconn *ofconn, struct ofport *port, |
9e1fd49b BP |
3190 | enum ofputil_port_config config, |
3191 | enum ofputil_port_config mask) | |
064af421 | 3192 | { |
2a6f78e0 | 3193 | enum ofputil_port_config toggle = (config ^ port->pp.config) & mask; |
abe529af | 3194 | |
2a6f78e0 BP |
3195 | if (toggle & OFPUTIL_PC_PORT_DOWN |
3196 | && (config & OFPUTIL_PC_PORT_DOWN | |
3197 | ? netdev_turn_flags_off(port->netdev, NETDEV_UP, NULL) | |
3198 | : netdev_turn_flags_on(port->netdev, NETDEV_UP, NULL))) { | |
3199 | /* We tried to bring the port up or down, but it failed, so don't | |
3200 | * update the "down" bit. */ | |
9e1fd49b | 3201 | toggle &= ~OFPUTIL_PC_PORT_DOWN; |
064af421 | 3202 | } |
abe529af | 3203 | |
2a6f78e0 BP |
3204 | if (toggle) { |
3205 | enum ofputil_port_config old_config = port->pp.config; | |
3206 | port->pp.config ^= toggle; | |
abe529af | 3207 | port->ofproto->ofproto_class->port_reconfigured(port, old_config); |
2a6f78e0 BP |
3208 | connmgr_send_port_status(port->ofproto->connmgr, ofconn, &port->pp, |
3209 | OFPPR_MODIFY); | |
064af421 BP |
3210 | } |
3211 | } | |
3212 | ||
90bf1e07 | 3213 | static enum ofperr |
d1e2cf21 | 3214 | handle_port_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3215 | { |
64ff1d96 | 3216 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
9e1fd49b | 3217 | struct ofputil_port_mod pm; |
064af421 | 3218 | struct ofport *port; |
9e1fd49b | 3219 | enum ofperr error; |
064af421 | 3220 | |
76589937 | 3221 | error = reject_slave_controller(ofconn); |
9deba63b BP |
3222 | if (error) { |
3223 | return error; | |
3224 | } | |
064af421 | 3225 | |
18cc69d9 | 3226 | error = ofputil_decode_port_mod(oh, &pm, false); |
9e1fd49b BP |
3227 | if (error) { |
3228 | return error; | |
3229 | } | |
3230 | ||
3231 | port = ofproto_get_port(p, pm.port_no); | |
064af421 | 3232 | if (!port) { |
90bf1e07 | 3233 | return OFPERR_OFPPMFC_BAD_PORT; |
9e1fd49b | 3234 | } else if (!eth_addr_equals(port->pp.hw_addr, pm.hw_addr)) { |
90bf1e07 | 3235 | return OFPERR_OFPPMFC_BAD_HW_ADDR; |
064af421 | 3236 | } else { |
2a6f78e0 | 3237 | update_port_config(ofconn, port, pm.config, pm.mask); |
9e1fd49b BP |
3238 | if (pm.advertise) { |
3239 | netdev_set_advertisements(port->netdev, pm.advertise); | |
064af421 BP |
3240 | } |
3241 | } | |
3242 | return 0; | |
3243 | } | |
3244 | ||
90bf1e07 | 3245 | static enum ofperr |
3269c562 | 3246 | handle_desc_stats_request(struct ofconn *ofconn, |
982697a4 | 3247 | const struct ofp_header *request) |
064af421 | 3248 | { |
061bfea4 BP |
3249 | static const char *default_mfr_desc = "Nicira, Inc."; |
3250 | static const char *default_hw_desc = "Open vSwitch"; | |
3251 | static const char *default_sw_desc = VERSION; | |
3252 | static const char *default_serial_desc = "None"; | |
3253 | static const char *default_dp_desc = "None"; | |
3254 | ||
64ff1d96 | 3255 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 BP |
3256 | struct ofp_desc_stats *ods; |
3257 | struct ofpbuf *msg; | |
3258 | ||
982697a4 BP |
3259 | msg = ofpraw_alloc_stats_reply(request, 0); |
3260 | ods = ofpbuf_put_zeros(msg, sizeof *ods); | |
061bfea4 BP |
3261 | ovs_strlcpy(ods->mfr_desc, p->mfr_desc ? p->mfr_desc : default_mfr_desc, |
3262 | sizeof ods->mfr_desc); | |
3263 | ovs_strlcpy(ods->hw_desc, p->hw_desc ? p->hw_desc : default_hw_desc, | |
3264 | sizeof ods->hw_desc); | |
3265 | ovs_strlcpy(ods->sw_desc, p->sw_desc ? p->sw_desc : default_sw_desc, | |
3266 | sizeof ods->sw_desc); | |
3267 | ovs_strlcpy(ods->serial_num, | |
3268 | p->serial_desc ? p->serial_desc : default_serial_desc, | |
3269 | sizeof ods->serial_num); | |
3270 | ovs_strlcpy(ods->dp_desc, p->dp_desc ? p->dp_desc : default_dp_desc, | |
3271 | sizeof ods->dp_desc); | |
b0421aa2 | 3272 | ofconn_send_reply(ofconn, msg); |
064af421 BP |
3273 | |
3274 | return 0; | |
3275 | } | |
3276 | ||
90bf1e07 | 3277 | static enum ofperr |
3269c562 | 3278 | handle_table_stats_request(struct ofconn *ofconn, |
982697a4 | 3279 | const struct ofp_header *request) |
064af421 | 3280 | { |
3c1bb396 BP |
3281 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
3282 | struct ofputil_table_features *features; | |
08d1e234 | 3283 | struct ofputil_table_stats *stats; |
3c1bb396 | 3284 | struct ofpbuf *reply; |
6c1491fb | 3285 | size_t i; |
064af421 | 3286 | |
3c1bb396 | 3287 | query_tables(ofproto, &features, &stats); |
254750ce | 3288 | |
3c1bb396 BP |
3289 | reply = ofputil_encode_table_stats_reply(request); |
3290 | for (i = 0; i < ofproto->n_tables; i++) { | |
3291 | if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) { | |
3292 | ofputil_append_table_stats_reply(reply, &stats[i], &features[i]); | |
254750ce BP |
3293 | } |
3294 | } | |
3c1bb396 | 3295 | ofconn_send_reply(ofconn, reply); |
254750ce | 3296 | |
3c1bb396 | 3297 | free(features); |
08d1e234 | 3298 | free(stats); |
307975da | 3299 | |
064af421 BP |
3300 | return 0; |
3301 | } | |
3302 | ||
3c4e10fb BP |
3303 | static enum ofperr |
3304 | handle_table_features_request(struct ofconn *ofconn, | |
3305 | const struct ofp_header *request) | |
3306 | { | |
3307 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
3308 | struct ofputil_table_features *features; | |
3309 | struct list replies; | |
3310 | struct ofpbuf msg; | |
3311 | size_t i; | |
3312 | ||
3313 | ofpbuf_use_const(&msg, request, ntohs(request->length)); | |
3314 | ofpraw_pull_assert(&msg); | |
3315 | if (ofpbuf_size(&msg) || ofpmp_more(request)) { | |
3316 | return OFPERR_OFPTFFC_EPERM; | |
3317 | } | |
3318 | ||
3319 | query_tables(ofproto, &features, NULL); | |
3320 | ||
3321 | ofpmp_init(&replies, request); | |
3322 | for (i = 0; i < ofproto->n_tables; i++) { | |
3323 | if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) { | |
3324 | ofputil_append_table_features_reply(&features[i], &replies); | |
3325 | } | |
3326 | } | |
3327 | ofconn_send_replies(ofconn, &replies); | |
3328 | ||
3329 | free(features); | |
3330 | ||
3331 | return 0; | |
3332 | } | |
3333 | ||
abaad8cf | 3334 | static void |
63f2140a | 3335 | append_port_stat(struct ofport *port, struct list *replies) |
abaad8cf | 3336 | { |
f8e4867e | 3337 | struct ofputil_port_stats ops = { .port_no = port->pp.port_no }; |
abaad8cf | 3338 | |
65e0be10 BP |
3339 | calc_duration(port->created, time_msec(), |
3340 | &ops.duration_sec, &ops.duration_nsec); | |
3341 | ||
d295e8e9 JP |
3342 | /* Intentionally ignore return value, since errors will set |
3343 | * 'stats' to all-1s, which is correct for OpenFlow, and | |
abaad8cf | 3344 | * netdev_get_stats() will log errors. */ |
f8e4867e SH |
3345 | ofproto_port_get_stats(port, &ops.stats); |
3346 | ||
3347 | ofputil_append_port_stat(replies, &ops); | |
abaad8cf JP |
3348 | } |
3349 | ||
70ae4f93 BP |
3350 | static void |
3351 | handle_port_request(struct ofconn *ofconn, | |
3352 | const struct ofp_header *request, ofp_port_t port_no, | |
3353 | void (*cb)(struct ofport *, struct list *replies)) | |
064af421 | 3354 | { |
70ae4f93 | 3355 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 | 3356 | struct ofport *port; |
63f2140a | 3357 | struct list replies; |
064af421 | 3358 | |
982697a4 | 3359 | ofpmp_init(&replies, request); |
7f05e7ab | 3360 | if (port_no != OFPP_ANY) { |
70ae4f93 | 3361 | port = ofproto_get_port(ofproto, port_no); |
abaad8cf | 3362 | if (port) { |
70ae4f93 | 3363 | cb(port, &replies); |
abaad8cf JP |
3364 | } |
3365 | } else { | |
70ae4f93 BP |
3366 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
3367 | cb(port, &replies); | |
abaad8cf | 3368 | } |
064af421 BP |
3369 | } |
3370 | ||
63f2140a | 3371 | ofconn_send_replies(ofconn, &replies); |
70ae4f93 BP |
3372 | } |
3373 | ||
3374 | static enum ofperr | |
3375 | handle_port_stats_request(struct ofconn *ofconn, | |
3376 | const struct ofp_header *request) | |
3377 | { | |
3378 | ofp_port_t port_no; | |
3379 | enum ofperr error; | |
3380 | ||
3381 | error = ofputil_decode_port_stats_request(request, &port_no); | |
3382 | if (!error) { | |
3383 | handle_port_request(ofconn, request, port_no, append_port_stat); | |
3384 | } | |
3385 | return error; | |
3386 | } | |
3387 | ||
3388 | static void | |
3389 | append_port_desc(struct ofport *port, struct list *replies) | |
3390 | { | |
3391 | ofputil_append_port_desc_stats_reply(&port->pp, replies); | |
064af421 BP |
3392 | } |
3393 | ||
2be393ed JP |
3394 | static enum ofperr |
3395 | handle_port_desc_stats_request(struct ofconn *ofconn, | |
982697a4 | 3396 | const struct ofp_header *request) |
2be393ed | 3397 | { |
70ae4f93 BP |
3398 | ofp_port_t port_no; |
3399 | enum ofperr error; | |
2be393ed | 3400 | |
70ae4f93 BP |
3401 | error = ofputil_decode_port_desc_stats_request(request, &port_no); |
3402 | if (!error) { | |
3403 | handle_port_request(ofconn, request, port_no, append_port_desc); | |
2be393ed | 3404 | } |
70ae4f93 | 3405 | return error; |
2be393ed JP |
3406 | } |
3407 | ||
98eaac36 JR |
3408 | static uint32_t |
3409 | hash_cookie(ovs_be64 cookie) | |
3410 | { | |
965607c8 | 3411 | return hash_uint64((OVS_FORCE uint64_t)cookie); |
98eaac36 JR |
3412 | } |
3413 | ||
3414 | static void | |
3415 | cookies_insert(struct ofproto *ofproto, struct rule *rule) | |
2c916028 | 3416 | OVS_REQUIRES(ofproto_mutex) |
98eaac36 JR |
3417 | { |
3418 | hindex_insert(&ofproto->cookies, &rule->cookie_node, | |
3419 | hash_cookie(rule->flow_cookie)); | |
3420 | } | |
3421 | ||
3422 | static void | |
3423 | cookies_remove(struct ofproto *ofproto, struct rule *rule) | |
2c916028 | 3424 | OVS_REQUIRES(ofproto_mutex) |
98eaac36 JR |
3425 | { |
3426 | hindex_remove(&ofproto->cookies, &rule->cookie_node); | |
3427 | } | |
3428 | ||
c6ebb8fb | 3429 | static void |
65e0be10 BP |
3430 | calc_duration(long long int start, long long int now, |
3431 | uint32_t *sec, uint32_t *nsec) | |
c6ebb8fb | 3432 | { |
f27f2134 | 3433 | long long int msecs = now - start; |
588cd7b5 BP |
3434 | *sec = msecs / 1000; |
3435 | *nsec = (msecs % 1000) * (1000 * 1000); | |
3436 | } | |
3437 | ||
48266274 | 3438 | /* Checks whether 'table_id' is 0xff or a valid table ID in 'ofproto'. Returns |
554764d1 SH |
3439 | * true if 'table_id' is OK, false otherwise. */ |
3440 | static bool | |
48266274 BP |
3441 | check_table_id(const struct ofproto *ofproto, uint8_t table_id) |
3442 | { | |
554764d1 | 3443 | return table_id == OFPTT_ALL || table_id < ofproto->n_tables; |
48266274 BP |
3444 | } |
3445 | ||
5c67e4af | 3446 | static struct oftable * |
d4ce8a49 | 3447 | next_visible_table(const struct ofproto *ofproto, uint8_t table_id) |
5c67e4af BP |
3448 | { |
3449 | struct oftable *table; | |
3450 | ||
3451 | for (table = &ofproto->tables[table_id]; | |
3452 | table < &ofproto->tables[ofproto->n_tables]; | |
3453 | table++) { | |
3454 | if (!(table->flags & OFTABLE_HIDDEN)) { | |
3455 | return table; | |
3456 | } | |
3457 | } | |
3458 | ||
3459 | return NULL; | |
3460 | } | |
3461 | ||
d0918789 | 3462 | static struct oftable * |
d4ce8a49 | 3463 | first_matching_table(const struct ofproto *ofproto, uint8_t table_id) |
064af421 | 3464 | { |
6c1491fb | 3465 | if (table_id == 0xff) { |
5c67e4af | 3466 | return next_visible_table(ofproto, 0); |
6c1491fb BP |
3467 | } else if (table_id < ofproto->n_tables) { |
3468 | return &ofproto->tables[table_id]; | |
a02e5331 | 3469 | } else { |
6c1491fb | 3470 | return NULL; |
a02e5331 | 3471 | } |
064af421 BP |
3472 | } |
3473 | ||
d0918789 | 3474 | static struct oftable * |
d4ce8a49 BP |
3475 | next_matching_table(const struct ofproto *ofproto, |
3476 | const struct oftable *table, uint8_t table_id) | |
6c1491fb | 3477 | { |
5c67e4af BP |
3478 | return (table_id == 0xff |
3479 | ? next_visible_table(ofproto, (table - ofproto->tables) + 1) | |
6c1491fb BP |
3480 | : NULL); |
3481 | } | |
3482 | ||
d0918789 | 3483 | /* Assigns TABLE to each oftable, in turn, that matches TABLE_ID in OFPROTO: |
6c1491fb BP |
3484 | * |
3485 | * - If TABLE_ID is 0xff, this iterates over every classifier table in | |
5c67e4af | 3486 | * OFPROTO, skipping tables marked OFTABLE_HIDDEN. |
6c1491fb BP |
3487 | * |
3488 | * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates | |
5c67e4af BP |
3489 | * only once, for that table. (This can be used to access tables marked |
3490 | * OFTABLE_HIDDEN.) | |
6c1491fb | 3491 | * |
48266274 BP |
3492 | * - Otherwise, TABLE_ID isn't valid for OFPROTO, so the loop won't be |
3493 | * entered at all. (Perhaps you should have validated TABLE_ID with | |
3494 | * check_table_id().) | |
6c1491fb BP |
3495 | * |
3496 | * All parameters are evaluated multiple times. | |
3497 | */ | |
d0918789 BP |
3498 | #define FOR_EACH_MATCHING_TABLE(TABLE, TABLE_ID, OFPROTO) \ |
3499 | for ((TABLE) = first_matching_table(OFPROTO, TABLE_ID); \ | |
3500 | (TABLE) != NULL; \ | |
3501 | (TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID)) | |
6c1491fb | 3502 | |
a9b22b7f BP |
3503 | /* Initializes 'criteria' in a straightforward way based on the other |
3504 | * parameters. | |
3505 | * | |
dd51dae2 BP |
3506 | * By default, the criteria include flows that are read-only, on the assumption |
3507 | * that the collected flows won't be modified. Call rule_criteria_require_rw() | |
3508 | * if flows will be modified. | |
3509 | * | |
a9b22b7f BP |
3510 | * For "loose" matching, the 'priority' parameter is unimportant and may be |
3511 | * supplied as 0. */ | |
3512 | static void | |
3513 | rule_criteria_init(struct rule_criteria *criteria, uint8_t table_id, | |
eb391b76 | 3514 | const struct match *match, int priority, |
a9b22b7f BP |
3515 | ovs_be64 cookie, ovs_be64 cookie_mask, |
3516 | ofp_port_t out_port, uint32_t out_group) | |
3517 | { | |
3518 | criteria->table_id = table_id; | |
3519 | cls_rule_init(&criteria->cr, match, priority); | |
3520 | criteria->cookie = cookie; | |
3521 | criteria->cookie_mask = cookie_mask; | |
3522 | criteria->out_port = out_port; | |
3523 | criteria->out_group = out_group; | |
dd51dae2 BP |
3524 | |
3525 | /* We ordinarily want to skip hidden rules, but there has to be a way for | |
3526 | * code internal to OVS to modify and delete them, so if the criteria | |
3527 | * specify a priority that can only be for a hidden flow, then allow hidden | |
3528 | * rules to be selected. (This doesn't allow OpenFlow clients to meddle | |
3529 | * with hidden flows because OpenFlow uses only a 16-bit field to specify | |
3530 | * priority.) */ | |
3531 | criteria->include_hidden = priority > UINT16_MAX; | |
3532 | ||
3533 | /* We assume that the criteria are being used to collect flows for reading | |
3534 | * but not modification. Thus, we should collect read-only flows. */ | |
3535 | criteria->include_readonly = true; | |
3536 | } | |
3537 | ||
3538 | /* By default, criteria initialized by rule_criteria_init() will match flows | |
3539 | * that are read-only, on the assumption that the collected flows won't be | |
3540 | * modified. Call this function to match only flows that are be modifiable. | |
3541 | * | |
3542 | * Specify 'can_write_readonly' as false in ordinary circumstances, true if the | |
3543 | * caller has special privileges that allow it to modify even "read-only" | |
3544 | * flows. */ | |
3545 | static void | |
3546 | rule_criteria_require_rw(struct rule_criteria *criteria, | |
3547 | bool can_write_readonly) | |
3548 | { | |
3549 | criteria->include_readonly = can_write_readonly; | |
a9b22b7f BP |
3550 | } |
3551 | ||
3552 | static void | |
3553 | rule_criteria_destroy(struct rule_criteria *criteria) | |
3554 | { | |
3555 | cls_rule_destroy(&criteria->cr); | |
3556 | } | |
3557 | ||
a8e547c1 BP |
3558 | void |
3559 | rule_collection_init(struct rule_collection *rules) | |
3560 | { | |
3561 | rules->rules = rules->stub; | |
3562 | rules->n = 0; | |
3563 | rules->capacity = ARRAY_SIZE(rules->stub); | |
3564 | } | |
3565 | ||
3566 | void | |
3567 | rule_collection_add(struct rule_collection *rules, struct rule *rule) | |
3568 | { | |
3569 | if (rules->n >= rules->capacity) { | |
3570 | size_t old_size, new_size; | |
3571 | ||
3572 | old_size = rules->capacity * sizeof *rules->rules; | |
3573 | rules->capacity *= 2; | |
3574 | new_size = rules->capacity * sizeof *rules->rules; | |
3575 | ||
3576 | if (rules->rules == rules->stub) { | |
3577 | rules->rules = xmalloc(new_size); | |
3578 | memcpy(rules->rules, rules->stub, old_size); | |
3579 | } else { | |
3580 | rules->rules = xrealloc(rules->rules, new_size); | |
3581 | } | |
3582 | } | |
3583 | ||
3584 | rules->rules[rules->n++] = rule; | |
3585 | } | |
3586 | ||
15aaf599 BP |
3587 | void |
3588 | rule_collection_ref(struct rule_collection *rules) | |
3589 | OVS_REQUIRES(ofproto_mutex) | |
3590 | { | |
3591 | size_t i; | |
3592 | ||
3593 | for (i = 0; i < rules->n; i++) { | |
3594 | ofproto_rule_ref(rules->rules[i]); | |
3595 | } | |
3596 | } | |
3597 | ||
3598 | void | |
3599 | rule_collection_unref(struct rule_collection *rules) | |
3600 | { | |
3601 | size_t i; | |
3602 | ||
3603 | for (i = 0; i < rules->n; i++) { | |
3604 | ofproto_rule_unref(rules->rules[i]); | |
3605 | } | |
3606 | } | |
3607 | ||
a8e547c1 BP |
3608 | void |
3609 | rule_collection_destroy(struct rule_collection *rules) | |
3610 | { | |
3611 | if (rules->rules != rules->stub) { | |
3612 | free(rules->rules); | |
3613 | } | |
bfd3dbf6 BP |
3614 | |
3615 | /* Make repeated destruction harmless. */ | |
3616 | rule_collection_init(rules); | |
a8e547c1 BP |
3617 | } |
3618 | ||
dd51dae2 BP |
3619 | /* Checks whether 'rule' matches 'c' and, if so, adds it to 'rules'. This |
3620 | * function verifies most of the criteria in 'c' itself, but the caller must | |
3621 | * check 'c->cr' itself. | |
3622 | * | |
3623 | * Increments '*n_readonly' if 'rule' wasn't added because it's read-only (and | |
b20f4073 BP |
3624 | * 'c' only includes modifiable rules). */ |
3625 | static void | |
a9b22b7f | 3626 | collect_rule(struct rule *rule, const struct rule_criteria *c, |
dd51dae2 | 3627 | struct rule_collection *rules, size_t *n_readonly) |
15aaf599 | 3628 | OVS_REQUIRES(ofproto_mutex) |
6c1d7642 | 3629 | { |
dd51dae2 BP |
3630 | if ((c->table_id == rule->table_id || c->table_id == 0xff) |
3631 | && ofproto_rule_has_out_port(rule, c->out_port) | |
3632 | && ofproto_rule_has_out_group(rule, c->out_group) | |
3633 | && !((rule->flow_cookie ^ c->cookie) & c->cookie_mask) | |
3634 | && (!rule_is_hidden(rule) || c->include_hidden)) { | |
dd51dae2 | 3635 | /* Rule matches all the criteria... */ |
834fe5cb | 3636 | if (!rule_is_readonly(rule) || c->include_readonly) { |
dd51dae2 | 3637 | /* ...add it. */ |
a8e547c1 | 3638 | rule_collection_add(rules, rule); |
dd51dae2 BP |
3639 | } else { |
3640 | /* ...except it's read-only. */ | |
3641 | ++*n_readonly; | |
6c1d7642 | 3642 | } |
6c1d7642 BP |
3643 | } |
3644 | } | |
3645 | ||
a9b22b7f BP |
3646 | /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches |
3647 | * on classifiers rules are done in the "loose" way required for OpenFlow | |
3648 | * OFPFC_MODIFY and OFPFC_DELETE requests. Puts the selected rules on list | |
9ed18e46 BP |
3649 | * 'rules'. |
3650 | * | |
9ed18e46 | 3651 | * Returns 0 on success, otherwise an OpenFlow error code. */ |
90bf1e07 | 3652 | static enum ofperr |
a9b22b7f | 3653 | collect_rules_loose(struct ofproto *ofproto, |
a8e547c1 BP |
3654 | const struct rule_criteria *criteria, |
3655 | struct rule_collection *rules) | |
15aaf599 | 3656 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 3657 | { |
d0918789 | 3658 | struct oftable *table; |
554764d1 | 3659 | enum ofperr error = 0; |
dd51dae2 | 3660 | size_t n_readonly = 0; |
48266274 | 3661 | |
a8e547c1 BP |
3662 | rule_collection_init(rules); |
3663 | ||
554764d1 SH |
3664 | if (!check_table_id(ofproto, criteria->table_id)) { |
3665 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
a8e547c1 | 3666 | goto exit; |
48266274 | 3667 | } |
9ed18e46 | 3668 | |
b8266395 | 3669 | if (criteria->cookie_mask == OVS_BE64_MAX) { |
98eaac36 JR |
3670 | struct rule *rule; |
3671 | ||
a9b22b7f BP |
3672 | HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node, |
3673 | hash_cookie(criteria->cookie), | |
98eaac36 | 3674 | &ofproto->cookies) { |
a9b22b7f | 3675 | if (cls_rule_is_loose_match(&rule->cr, &criteria->cr.match)) { |
b20f4073 | 3676 | collect_rule(rule, criteria, rules, &n_readonly); |
98eaac36 JR |
3677 | } |
3678 | } | |
6c1d7642 | 3679 | } else { |
a9b22b7f | 3680 | FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) { |
6c1d7642 | 3681 | struct rule *rule; |
9ed18e46 | 3682 | |
5f0476ce | 3683 | CLS_FOR_EACH_TARGET (rule, cr, &table->cls, &criteria->cr) { |
b20f4073 | 3684 | collect_rule(rule, criteria, rules, &n_readonly); |
9ed18e46 BP |
3685 | } |
3686 | } | |
3687 | } | |
48d28ac1 | 3688 | |
a8e547c1 | 3689 | exit: |
dd51dae2 BP |
3690 | if (!error && !rules->n && n_readonly) { |
3691 | /* We didn't find any rules to modify. We did find some read-only | |
3692 | * rules that we're not allowed to modify, so report that. */ | |
3693 | error = OFPERR_OFPBRC_EPERM; | |
3694 | } | |
a8e547c1 BP |
3695 | if (error) { |
3696 | rule_collection_destroy(rules); | |
3697 | } | |
48d28ac1 | 3698 | return error; |
9ed18e46 BP |
3699 | } |
3700 | ||
a9b22b7f BP |
3701 | /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches |
3702 | * on classifiers rules are done in the "strict" way required for OpenFlow | |
3703 | * OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests. Puts the selected | |
3704 | * rules on list 'rules'. | |
9ed18e46 | 3705 | * |
9ed18e46 | 3706 | * Returns 0 on success, otherwise an OpenFlow error code. */ |
90bf1e07 | 3707 | static enum ofperr |
a9b22b7f | 3708 | collect_rules_strict(struct ofproto *ofproto, |
a8e547c1 BP |
3709 | const struct rule_criteria *criteria, |
3710 | struct rule_collection *rules) | |
15aaf599 | 3711 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 3712 | { |
d0918789 | 3713 | struct oftable *table; |
dd51dae2 | 3714 | size_t n_readonly = 0; |
554764d1 | 3715 | int error = 0; |
48266274 | 3716 | |
a8e547c1 BP |
3717 | rule_collection_init(rules); |
3718 | ||
554764d1 SH |
3719 | if (!check_table_id(ofproto, criteria->table_id)) { |
3720 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
a8e547c1 | 3721 | goto exit; |
48266274 | 3722 | } |
9ed18e46 | 3723 | |
b8266395 | 3724 | if (criteria->cookie_mask == OVS_BE64_MAX) { |
98eaac36 JR |
3725 | struct rule *rule; |
3726 | ||
a9b22b7f BP |
3727 | HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node, |
3728 | hash_cookie(criteria->cookie), | |
98eaac36 | 3729 | &ofproto->cookies) { |
a9b22b7f | 3730 | if (cls_rule_equal(&rule->cr, &criteria->cr)) { |
b20f4073 | 3731 | collect_rule(rule, criteria, rules, &n_readonly); |
98eaac36 JR |
3732 | } |
3733 | } | |
6c1d7642 | 3734 | } else { |
a9b22b7f | 3735 | FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) { |
6c1d7642 | 3736 | struct rule *rule; |
9ed18e46 | 3737 | |
a9b22b7f BP |
3738 | rule = rule_from_cls_rule(classifier_find_rule_exactly( |
3739 | &table->cls, &criteria->cr)); | |
6c1d7642 | 3740 | if (rule) { |
b20f4073 | 3741 | collect_rule(rule, criteria, rules, &n_readonly); |
9ed18e46 BP |
3742 | } |
3743 | } | |
3744 | } | |
48d28ac1 | 3745 | |
a8e547c1 | 3746 | exit: |
b20f4073 BP |
3747 | if (!error && !rules->n && n_readonly) { |
3748 | /* We didn't find any rules to modify. We did find some read-only | |
3749 | * rules that we're not allowed to modify, so report that. */ | |
3750 | error = OFPERR_OFPBRC_EPERM; | |
3751 | } | |
a8e547c1 BP |
3752 | if (error) { |
3753 | rule_collection_destroy(rules); | |
3754 | } | |
6c1d7642 | 3755 | return error; |
9ed18e46 BP |
3756 | } |
3757 | ||
f27f2134 BP |
3758 | /* Returns 'age_ms' (a duration in milliseconds), converted to seconds and |
3759 | * forced into the range of a uint16_t. */ | |
3760 | static int | |
3761 | age_secs(long long int age_ms) | |
3762 | { | |
3763 | return (age_ms < 0 ? 0 | |
3764 | : age_ms >= UINT16_MAX * 1000 ? UINT16_MAX | |
3765 | : (unsigned int) age_ms / 1000); | |
3766 | } | |
3767 | ||
90bf1e07 | 3768 | static enum ofperr |
63f2140a | 3769 | handle_flow_stats_request(struct ofconn *ofconn, |
982697a4 | 3770 | const struct ofp_header *request) |
15aaf599 | 3771 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 3772 | { |
64ff1d96 | 3773 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 3774 | struct ofputil_flow_stats_request fsr; |
a9b22b7f | 3775 | struct rule_criteria criteria; |
a8e547c1 | 3776 | struct rule_collection rules; |
63f2140a | 3777 | struct list replies; |
90bf1e07 | 3778 | enum ofperr error; |
a8e547c1 | 3779 | size_t i; |
09246b99 | 3780 | |
982697a4 | 3781 | error = ofputil_decode_flow_stats_request(&fsr, request); |
09246b99 BP |
3782 | if (error) { |
3783 | return error; | |
3784 | } | |
3785 | ||
a9b22b7f BP |
3786 | rule_criteria_init(&criteria, fsr.table_id, &fsr.match, 0, fsr.cookie, |
3787 | fsr.cookie_mask, fsr.out_port, fsr.out_group); | |
15aaf599 BP |
3788 | |
3789 | ovs_mutex_lock(&ofproto_mutex); | |
a9b22b7f BP |
3790 | error = collect_rules_loose(ofproto, &criteria, &rules); |
3791 | rule_criteria_destroy(&criteria); | |
15aaf599 BP |
3792 | if (!error) { |
3793 | rule_collection_ref(&rules); | |
3794 | } | |
3795 | ovs_mutex_unlock(&ofproto_mutex); | |
3796 | ||
9ed18e46 BP |
3797 | if (error) { |
3798 | return error; | |
3799 | } | |
5ecc9d81 | 3800 | |
982697a4 | 3801 | ofpmp_init(&replies, request); |
a8e547c1 BP |
3802 | for (i = 0; i < rules.n; i++) { |
3803 | struct rule *rule = rules.rules[i]; | |
f27f2134 | 3804 | long long int now = time_msec(); |
9ed18e46 | 3805 | struct ofputil_flow_stats fs; |
15aaf599 | 3806 | long long int created, used, modified; |
dc723c44 | 3807 | const struct rule_actions *actions; |
15aaf599 | 3808 | enum ofputil_flow_mod_flags flags; |
a3779dbc | 3809 | |
d10976b7 | 3810 | ovs_mutex_lock(&rule->mutex); |
15aaf599 | 3811 | fs.cookie = rule->flow_cookie; |
a3779dbc EJ |
3812 | fs.idle_timeout = rule->idle_timeout; |
3813 | fs.hard_timeout = rule->hard_timeout; | |
ca26eb44 | 3814 | fs.importance = rule->importance; |
15aaf599 | 3815 | created = rule->created; |
15aaf599 | 3816 | modified = rule->modified; |
06a0f3e2 | 3817 | actions = rule_get_actions(rule); |
15aaf599 | 3818 | flags = rule->flags; |
d10976b7 | 3819 | ovs_mutex_unlock(&rule->mutex); |
a3779dbc | 3820 | |
dc437090 JR |
3821 | ofproto->ofproto_class->rule_get_stats(rule, &fs.packet_count, |
3822 | &fs.byte_count, &used); | |
3823 | ||
15aaf599 BP |
3824 | minimatch_expand(&rule->cr.match, &fs.match); |
3825 | fs.table_id = rule->table_id; | |
3826 | calc_duration(created, now, &fs.duration_sec, &fs.duration_nsec); | |
3827 | fs.priority = rule->cr.priority; | |
3828 | fs.idle_age = age_secs(now - used); | |
3829 | fs.hard_age = age_secs(now - modified); | |
15aaf599 BP |
3830 | fs.ofpacts = actions->ofpacts; |
3831 | fs.ofpacts_len = actions->ofpacts_len; | |
3f517bcd | 3832 | |
15aaf599 | 3833 | fs.flags = flags; |
9ed18e46 | 3834 | ofputil_append_flow_stats_reply(&fs, &replies); |
3c4486a5 | 3835 | } |
15aaf599 BP |
3836 | |
3837 | rule_collection_unref(&rules); | |
a8e547c1 BP |
3838 | rule_collection_destroy(&rules); |
3839 | ||
63f2140a | 3840 | ofconn_send_replies(ofconn, &replies); |
5ecc9d81 | 3841 | |
09246b99 BP |
3842 | return 0; |
3843 | } | |
3844 | ||
4f2cad2c | 3845 | static void |
3394b5b6 | 3846 | flow_stats_ds(struct rule *rule, struct ds *results) |
4f2cad2c | 3847 | { |
4f2cad2c | 3848 | uint64_t packet_count, byte_count; |
dc723c44 | 3849 | const struct rule_actions *actions; |
dc437090 | 3850 | long long int created, used; |
4f2cad2c | 3851 | |
dc437090 JR |
3852 | rule->ofproto->ofproto_class->rule_get_stats(rule, &packet_count, |
3853 | &byte_count, &used); | |
4f2cad2c | 3854 | |
15aaf599 | 3855 | ovs_mutex_lock(&rule->mutex); |
06a0f3e2 | 3856 | actions = rule_get_actions(rule); |
15aaf599 BP |
3857 | created = rule->created; |
3858 | ovs_mutex_unlock(&rule->mutex); | |
3859 | ||
6c1491fb BP |
3860 | if (rule->table_id != 0) { |
3861 | ds_put_format(results, "table_id=%"PRIu8", ", rule->table_id); | |
3862 | } | |
15aaf599 | 3863 | ds_put_format(results, "duration=%llds, ", (time_msec() - created) / 1000); |
4f2cad2c JP |
3864 | ds_put_format(results, "n_packets=%"PRIu64", ", packet_count); |
3865 | ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count); | |
cb833cf6 | 3866 | cls_rule_format(&rule->cr, results); |
a5df0e72 | 3867 | ds_put_char(results, ','); |
15aaf599 | 3868 | |
455ecd77 | 3869 | ds_put_cstr(results, "actions="); |
15aaf599 BP |
3870 | ofpacts_format(actions->ofpacts, actions->ofpacts_len, results); |
3871 | ||
4f2cad2c JP |
3872 | ds_put_cstr(results, "\n"); |
3873 | } | |
3874 | ||
d295e8e9 | 3875 | /* Adds a pretty-printed description of all flows to 'results', including |
ee8b231c | 3876 | * hidden flows (e.g., set up by in-band control). */ |
4f2cad2c JP |
3877 | void |
3878 | ofproto_get_all_flows(struct ofproto *p, struct ds *results) | |
3879 | { | |
d0918789 | 3880 | struct oftable *table; |
6c1491fb | 3881 | |
d0918789 | 3882 | OFPROTO_FOR_EACH_TABLE (table, p) { |
6c1491fb | 3883 | struct rule *rule; |
064af421 | 3884 | |
5f0476ce | 3885 | CLS_FOR_EACH (rule, cr, &table->cls) { |
6c1491fb BP |
3886 | flow_stats_ds(rule, results); |
3887 | } | |
064af421 | 3888 | } |
064af421 BP |
3889 | } |
3890 | ||
b5827b24 BP |
3891 | /* Obtains the NetFlow engine type and engine ID for 'ofproto' into |
3892 | * '*engine_type' and '*engine_id', respectively. */ | |
3893 | void | |
3894 | ofproto_get_netflow_ids(const struct ofproto *ofproto, | |
3895 | uint8_t *engine_type, uint8_t *engine_id) | |
3896 | { | |
abe529af | 3897 | ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id); |
b5827b24 BP |
3898 | } |
3899 | ||
8f5514fe AW |
3900 | /* Checks the status change of CFM on 'ofport'. |
3901 | * | |
3902 | * Returns true if 'ofproto_class' does not support 'cfm_status_changed'. */ | |
3903 | bool | |
3904 | ofproto_port_cfm_status_changed(struct ofproto *ofproto, ofp_port_t ofp_port) | |
3905 | { | |
3906 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
3907 | return (ofport && ofproto->ofproto_class->cfm_status_changed | |
3908 | ? ofproto->ofproto_class->cfm_status_changed(ofport) | |
3909 | : true); | |
3910 | } | |
3911 | ||
88bf179a AW |
3912 | /* Checks the status of CFM configured on 'ofp_port' within 'ofproto'. |
3913 | * Returns 0 if the port's CFM status was successfully stored into | |
3914 | * '*status'. Returns positive errno if the port did not have CFM | |
8f5514fe | 3915 | * configured. |
9a9e3786 | 3916 | * |
88bf179a AW |
3917 | * The caller must provide and own '*status', and must free 'status->rmps'. |
3918 | * '*status' is indeterminate if the return value is non-zero. */ | |
3919 | int | |
4e022ec0 | 3920 | ofproto_port_get_cfm_status(const struct ofproto *ofproto, ofp_port_t ofp_port, |
685acfd9 | 3921 | struct cfm_status *status) |
3967a833 MM |
3922 | { |
3923 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
88bf179a AW |
3924 | return (ofport && ofproto->ofproto_class->get_cfm_status |
3925 | ? ofproto->ofproto_class->get_cfm_status(ofport, status) | |
3926 | : EOPNOTSUPP); | |
3967a833 MM |
3927 | } |
3928 | ||
90bf1e07 | 3929 | static enum ofperr |
76c93b22 | 3930 | handle_aggregate_stats_request(struct ofconn *ofconn, |
982697a4 | 3931 | const struct ofp_header *oh) |
15aaf599 | 3932 | OVS_EXCLUDED(ofproto_mutex) |
27d34fce | 3933 | { |
76c93b22 | 3934 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 3935 | struct ofputil_flow_stats_request request; |
76c93b22 | 3936 | struct ofputil_aggregate_stats stats; |
5e9d0469 | 3937 | bool unknown_packets, unknown_bytes; |
a9b22b7f | 3938 | struct rule_criteria criteria; |
a8e547c1 | 3939 | struct rule_collection rules; |
76c93b22 | 3940 | struct ofpbuf *reply; |
90bf1e07 | 3941 | enum ofperr error; |
a8e547c1 | 3942 | size_t i; |
27d34fce | 3943 | |
982697a4 | 3944 | error = ofputil_decode_flow_stats_request(&request, oh); |
76c93b22 BP |
3945 | if (error) { |
3946 | return error; | |
3947 | } | |
5ecc9d81 | 3948 | |
a9b22b7f BP |
3949 | rule_criteria_init(&criteria, request.table_id, &request.match, 0, |
3950 | request.cookie, request.cookie_mask, | |
3951 | request.out_port, request.out_group); | |
15aaf599 BP |
3952 | |
3953 | ovs_mutex_lock(&ofproto_mutex); | |
a9b22b7f BP |
3954 | error = collect_rules_loose(ofproto, &criteria, &rules); |
3955 | rule_criteria_destroy(&criteria); | |
15aaf599 BP |
3956 | if (!error) { |
3957 | rule_collection_ref(&rules); | |
3958 | } | |
3959 | ovs_mutex_unlock(&ofproto_mutex); | |
3960 | ||
9ed18e46 BP |
3961 | if (error) { |
3962 | return error; | |
3963 | } | |
3c4486a5 | 3964 | |
9ed18e46 | 3965 | memset(&stats, 0, sizeof stats); |
5e9d0469 | 3966 | unknown_packets = unknown_bytes = false; |
a8e547c1 BP |
3967 | for (i = 0; i < rules.n; i++) { |
3968 | struct rule *rule = rules.rules[i]; | |
9ed18e46 BP |
3969 | uint64_t packet_count; |
3970 | uint64_t byte_count; | |
dc437090 | 3971 | long long int used; |
5ecc9d81 | 3972 | |
9ed18e46 | 3973 | ofproto->ofproto_class->rule_get_stats(rule, &packet_count, |
dc437090 | 3974 | &byte_count, &used); |
5ecc9d81 | 3975 | |
5e9d0469 BP |
3976 | if (packet_count == UINT64_MAX) { |
3977 | unknown_packets = true; | |
3978 | } else { | |
3979 | stats.packet_count += packet_count; | |
3980 | } | |
3981 | ||
3982 | if (byte_count == UINT64_MAX) { | |
3983 | unknown_bytes = true; | |
3984 | } else { | |
3985 | stats.byte_count += byte_count; | |
3986 | } | |
3987 | ||
9ed18e46 | 3988 | stats.flow_count++; |
3c4486a5 | 3989 | } |
5e9d0469 BP |
3990 | if (unknown_packets) { |
3991 | stats.packet_count = UINT64_MAX; | |
3992 | } | |
3993 | if (unknown_bytes) { | |
3994 | stats.byte_count = UINT64_MAX; | |
3995 | } | |
27d34fce | 3996 | |
15aaf599 | 3997 | rule_collection_unref(&rules); |
a8e547c1 BP |
3998 | rule_collection_destroy(&rules); |
3999 | ||
982697a4 | 4000 | reply = ofputil_encode_aggregate_stats_reply(&stats, oh); |
76c93b22 | 4001 | ofconn_send_reply(ofconn, reply); |
09246b99 BP |
4002 | |
4003 | return 0; | |
4004 | } | |
4005 | ||
c1c9c9c4 | 4006 | struct queue_stats_cbdata { |
ca0f572c | 4007 | struct ofport *ofport; |
63f2140a | 4008 | struct list replies; |
6dc34a0d | 4009 | long long int now; |
c1c9c9c4 BP |
4010 | }; |
4011 | ||
4012 | static void | |
db9220c3 | 4013 | put_queue_stats(struct queue_stats_cbdata *cbdata, uint32_t queue_id, |
c1c9c9c4 BP |
4014 | const struct netdev_queue_stats *stats) |
4015 | { | |
6dc34a0d | 4016 | struct ofputil_queue_stats oqs; |
c1c9c9c4 | 4017 | |
6dc34a0d BP |
4018 | oqs.port_no = cbdata->ofport->pp.port_no; |
4019 | oqs.queue_id = queue_id; | |
4020 | oqs.tx_bytes = stats->tx_bytes; | |
4021 | oqs.tx_packets = stats->tx_packets; | |
4022 | oqs.tx_errors = stats->tx_errors; | |
4023 | if (stats->created != LLONG_MIN) { | |
4024 | calc_duration(stats->created, cbdata->now, | |
4025 | &oqs.duration_sec, &oqs.duration_nsec); | |
4026 | } else { | |
4027 | oqs.duration_sec = oqs.duration_nsec = UINT32_MAX; | |
4028 | } | |
64626975 | 4029 | ofputil_append_queue_stat(&cbdata->replies, &oqs); |
c1c9c9c4 BP |
4030 | } |
4031 | ||
4032 | static void | |
db9220c3 | 4033 | handle_queue_stats_dump_cb(uint32_t queue_id, |
c1c9c9c4 BP |
4034 | struct netdev_queue_stats *stats, |
4035 | void *cbdata_) | |
4036 | { | |
4037 | struct queue_stats_cbdata *cbdata = cbdata_; | |
4038 | ||
4039 | put_queue_stats(cbdata, queue_id, stats); | |
4040 | } | |
4041 | ||
0414d158 | 4042 | static enum ofperr |
ca0f572c | 4043 | handle_queue_stats_for_port(struct ofport *port, uint32_t queue_id, |
c1c9c9c4 BP |
4044 | struct queue_stats_cbdata *cbdata) |
4045 | { | |
ca0f572c | 4046 | cbdata->ofport = port; |
c1c9c9c4 BP |
4047 | if (queue_id == OFPQ_ALL) { |
4048 | netdev_dump_queue_stats(port->netdev, | |
4049 | handle_queue_stats_dump_cb, cbdata); | |
4050 | } else { | |
4051 | struct netdev_queue_stats stats; | |
4052 | ||
1ac788f6 BP |
4053 | if (!netdev_get_queue_stats(port->netdev, queue_id, &stats)) { |
4054 | put_queue_stats(cbdata, queue_id, &stats); | |
0414d158 BP |
4055 | } else { |
4056 | return OFPERR_OFPQOFC_BAD_QUEUE; | |
1ac788f6 | 4057 | } |
c1c9c9c4 | 4058 | } |
0414d158 | 4059 | return 0; |
c1c9c9c4 BP |
4060 | } |
4061 | ||
90bf1e07 | 4062 | static enum ofperr |
63f2140a | 4063 | handle_queue_stats_request(struct ofconn *ofconn, |
982697a4 | 4064 | const struct ofp_header *rq) |
c1c9c9c4 | 4065 | { |
64ff1d96 | 4066 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
c1c9c9c4 | 4067 | struct queue_stats_cbdata cbdata; |
0414d158 | 4068 | struct ofport *port; |
0414d158 | 4069 | enum ofperr error; |
64626975 | 4070 | struct ofputil_queue_stats_request oqsr; |
c1c9c9c4 | 4071 | |
c1c9c9c4 BP |
4072 | COVERAGE_INC(ofproto_queue_req); |
4073 | ||
982697a4 | 4074 | ofpmp_init(&cbdata.replies, rq); |
6dc34a0d | 4075 | cbdata.now = time_msec(); |
c1c9c9c4 | 4076 | |
64626975 SH |
4077 | error = ofputil_decode_queue_stats_request(rq, &oqsr); |
4078 | if (error) { | |
4079 | return error; | |
4080 | } | |
4081 | ||
7f05e7ab | 4082 | if (oqsr.port_no == OFPP_ANY) { |
0414d158 | 4083 | error = OFPERR_OFPQOFC_BAD_QUEUE; |
4e8e4213 | 4084 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
64626975 | 4085 | if (!handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata)) { |
0414d158 BP |
4086 | error = 0; |
4087 | } | |
c1c9c9c4 | 4088 | } |
0414d158 | 4089 | } else { |
64626975 | 4090 | port = ofproto_get_port(ofproto, oqsr.port_no); |
0414d158 | 4091 | error = (port |
64626975 | 4092 | ? handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata) |
0414d158 BP |
4093 | : OFPERR_OFPQOFC_BAD_PORT); |
4094 | } | |
4095 | if (!error) { | |
4096 | ofconn_send_replies(ofconn, &cbdata.replies); | |
c1c9c9c4 | 4097 | } else { |
63f2140a | 4098 | ofpbuf_list_delete(&cbdata.replies); |
c1c9c9c4 | 4099 | } |
c1c9c9c4 | 4100 | |
0414d158 | 4101 | return error; |
c1c9c9c4 | 4102 | } |
7ee20df1 | 4103 | |
2e31a9b8 BP |
4104 | static bool |
4105 | should_evict_a_rule(struct oftable *table, unsigned int extra_space) | |
15aaf599 BP |
4106 | OVS_REQUIRES(ofproto_mutex) |
4107 | OVS_NO_THREAD_SAFETY_ANALYSIS | |
8037acb4 | 4108 | { |
15aaf599 | 4109 | return classifier_count(&table->cls) + extra_space > table->max_flows; |
2e31a9b8 | 4110 | } |
8037acb4 | 4111 | |
2e31a9b8 | 4112 | static enum ofperr |
834fe5cb | 4113 | evict_rules_from_table(struct oftable *table, unsigned int extra_space) |
15aaf599 | 4114 | OVS_REQUIRES(ofproto_mutex) |
2e31a9b8 BP |
4115 | { |
4116 | while (should_evict_a_rule(table, extra_space)) { | |
4117 | struct rule *rule; | |
8037acb4 | 4118 | |
2e31a9b8 BP |
4119 | if (!choose_rule_to_evict(table, &rule)) { |
4120 | return OFPERR_OFPFMFC_TABLE_FULL; | |
2e31a9b8 | 4121 | } else { |
834fe5cb | 4122 | ofproto_rule_delete__(rule, OFPRR_EVICTION); |
2e31a9b8 | 4123 | } |
8037acb4 | 4124 | } |
2e31a9b8 BP |
4125 | |
4126 | return 0; | |
8037acb4 BP |
4127 | } |
4128 | ||
79eee1eb BP |
4129 | /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT |
4130 | * in which no matching flow already exists in the flow table. | |
4131 | * | |
4132 | * Adds the flow specified by 'ofm', which is followed by 'n_actions' | |
75a75043 | 4133 | * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow |
90bf1e07 BP |
4134 | * error code on failure, or OFPROTO_POSTPONE if the operation cannot be |
4135 | * initiated now but may be retried later. | |
79eee1eb | 4136 | * |
2509616e | 4137 | * The caller retains ownership of 'fm->ofpacts'. |
f25d0cf3 | 4138 | * |
79eee1eb BP |
4139 | * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id, |
4140 | * if any. */ | |
90bf1e07 | 4141 | static enum ofperr |
baae3d02 BP |
4142 | add_flow(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4143 | const struct flow_mod_requester *req) | |
15aaf599 | 4144 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 4145 | { |
062fea06 | 4146 | const struct rule_actions *actions; |
d0918789 | 4147 | struct oftable *table; |
8037acb4 | 4148 | struct cls_rule cr; |
064af421 | 4149 | struct rule *rule; |
5a361239 | 4150 | uint8_t table_id; |
554764d1 | 4151 | int error = 0; |
064af421 | 4152 | |
554764d1 SH |
4153 | if (!check_table_id(ofproto, fm->table_id)) { |
4154 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
48266274 BP |
4155 | return error; |
4156 | } | |
4157 | ||
7ee20df1 BP |
4158 | /* Pick table. */ |
4159 | if (fm->table_id == 0xff) { | |
13521ff5 | 4160 | if (ofproto->ofproto_class->rule_choose_table) { |
81a76618 BP |
4161 | error = ofproto->ofproto_class->rule_choose_table(ofproto, |
4162 | &fm->match, | |
7ee20df1 BP |
4163 | &table_id); |
4164 | if (error) { | |
4165 | return error; | |
4166 | } | |
cb22974d | 4167 | ovs_assert(table_id < ofproto->n_tables); |
7ee20df1 | 4168 | } else { |
5a361239 | 4169 | table_id = 0; |
7ee20df1 BP |
4170 | } |
4171 | } else if (fm->table_id < ofproto->n_tables) { | |
5a361239 | 4172 | table_id = fm->table_id; |
7ee20df1 | 4173 | } else { |
c22c56bd | 4174 | return OFPERR_OFPBRC_BAD_TABLE_ID; |
064af421 BP |
4175 | } |
4176 | ||
5a361239 | 4177 | table = &ofproto->tables[table_id]; |
834fe5cb BP |
4178 | if (table->flags & OFTABLE_READONLY |
4179 | && !(fm->flags & OFPUTIL_FF_NO_READONLY)) { | |
5c67e4af BP |
4180 | return OFPERR_OFPBRC_EPERM; |
4181 | } | |
4182 | ||
adcf00ba AZ |
4183 | if (!(fm->flags & OFPUTIL_FF_HIDDEN_FIELDS)) { |
4184 | if (!match_has_default_hidden_fields(&fm->match)) { | |
4185 | VLOG_WARN_RL(&rl, "%s: (add_flow) only internal flows can set " | |
4186 | "non-default values to hidden fields", ofproto->name); | |
4187 | return OFPERR_OFPBRC_EPERM; | |
4188 | } | |
4189 | } | |
4190 | ||
8037acb4 BP |
4191 | cls_rule_init(&cr, &fm->match, fm->priority); |
4192 | ||
b277c7cc | 4193 | /* Transform "add" into "modify" if there's an existing identical flow. */ |
8037acb4 | 4194 | rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls, &cr)); |
b277c7cc | 4195 | if (rule) { |
834fe5cb BP |
4196 | struct rule_collection rules; |
4197 | ||
8037acb4 | 4198 | cls_rule_destroy(&cr); |
b277c7cc | 4199 | |
834fe5cb BP |
4200 | rule_collection_init(&rules); |
4201 | rule_collection_add(&rules, rule); | |
4202 | fm->modify_cookie = true; | |
4203 | error = modify_flows__(ofproto, fm, &rules, req); | |
4204 | rule_collection_destroy(&rules); | |
a8e547c1 | 4205 | |
834fe5cb | 4206 | return error; |
b277c7cc BP |
4207 | } |
4208 | ||
81a76618 | 4209 | /* Check for overlap, if requested. */ |
0fb88c18 | 4210 | if (fm->flags & OFPUTIL_FF_CHECK_OVERLAP) { |
afae68b1 | 4211 | if (classifier_rule_overlaps(&table->cls, &cr)) { |
8037acb4 | 4212 | cls_rule_destroy(&cr); |
c09f755d BP |
4213 | return OFPERR_OFPFMFC_OVERLAP; |
4214 | } | |
7ee20df1 | 4215 | } |
81a76618 | 4216 | |
8037acb4 | 4217 | /* If necessary, evict an existing rule to clear out space. */ |
834fe5cb | 4218 | error = evict_rules_from_table(table, 1); |
8037acb4 BP |
4219 | if (error) { |
4220 | cls_rule_destroy(&cr); | |
4221 | return error; | |
4222 | } | |
2e1ae200 | 4223 | |
8037acb4 BP |
4224 | /* Allocate new rule. */ |
4225 | rule = ofproto->ofproto_class->rule_alloc(); | |
4226 | if (!rule) { | |
4227 | cls_rule_destroy(&cr); | |
4228 | VLOG_WARN_RL(&rl, "%s: failed to create rule (%s)", | |
4229 | ofproto->name, ovs_strerror(error)); | |
4230 | return ENOMEM; | |
4231 | } | |
4232 | ||
4233 | /* Initialize base state. */ | |
49a0e0eb BP |
4234 | *CONST_CAST(struct ofproto **, &rule->ofproto) = ofproto; |
4235 | cls_rule_move(CONST_CAST(struct cls_rule *, &rule->cr), &cr); | |
37bec3d3 | 4236 | ovs_refcount_init(&rule->ref_count); |
623e1caf | 4237 | rule->flow_cookie = fm->new_cookie; |
dc437090 | 4238 | rule->created = rule->modified = time_msec(); |
a3779dbc | 4239 | |
d10976b7 BP |
4240 | ovs_mutex_init(&rule->mutex); |
4241 | ovs_mutex_lock(&rule->mutex); | |
7ee20df1 BP |
4242 | rule->idle_timeout = fm->idle_timeout; |
4243 | rule->hard_timeout = fm->hard_timeout; | |
ca26eb44 | 4244 | rule->importance = fm->importance; |
d10976b7 | 4245 | ovs_mutex_unlock(&rule->mutex); |
a3779dbc | 4246 | |
49a0e0eb | 4247 | *CONST_CAST(uint8_t *, &rule->table_id) = table - ofproto->tables; |
3f517bcd | 4248 | rule->flags = fm->flags & OFPUTIL_FF_STATE; |
4c7562c5 | 4249 | actions = rule_actions_create(fm->ofpacts, fm->ofpacts_len); |
062fea06 | 4250 | ovsrcu_set(&rule->actions, actions); |
9cae45dc | 4251 | list_init(&rule->meter_list_node); |
254750ce | 4252 | rule->eviction_group = NULL; |
e503cc19 | 4253 | list_init(&rule->expirable); |
2b07c8b1 BP |
4254 | rule->monitor_flags = 0; |
4255 | rule->add_seqno = 0; | |
4256 | rule->modify_seqno = 0; | |
7ee20df1 | 4257 | |
8037acb4 | 4258 | /* Construct rule, initializing derived state. */ |
b277c7cc BP |
4259 | error = ofproto->ofproto_class->rule_construct(rule); |
4260 | if (error) { | |
8037acb4 BP |
4261 | ofproto_rule_destroy__(rule); |
4262 | return error; | |
064af421 | 4263 | } |
8037acb4 | 4264 | |
062fea06 BP |
4265 | if (fm->hard_timeout || fm->idle_timeout) { |
4266 | list_insert(&ofproto->expirable, &rule->expirable); | |
4267 | } | |
4268 | cookies_insert(ofproto, rule); | |
4269 | eviction_group_add_rule(rule); | |
4c7562c5 | 4270 | if (actions->has_meter) { |
062fea06 BP |
4271 | meter_insert_rule(rule); |
4272 | } | |
1ebeaaa7 | 4273 | |
062fea06 | 4274 | classifier_insert(&table->cls, CONST_CAST(struct cls_rule *, &rule->cr)); |
8037acb4 | 4275 | |
b20f4073 | 4276 | error = ofproto->ofproto_class->rule_insert(rule); |
834fe5cb BP |
4277 | if (error) { |
4278 | oftable_remove_rule(rule); | |
4279 | ofproto_rule_unref(rule); | |
4280 | return error; | |
4281 | } | |
35f48b8b | 4282 | learned_cookies_inc(ofproto, actions); |
062fea06 | 4283 | |
834fe5cb BP |
4284 | if (minimask_get_vid_mask(&rule->cr.match.mask) == VLAN_VID_MASK) { |
4285 | if (ofproto->vlan_bitmap) { | |
4286 | uint16_t vid = miniflow_get_vid(&rule->cr.match.flow); | |
4287 | if (!bitmap_is_set(ofproto->vlan_bitmap, vid)) { | |
4288 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
4289 | ofproto->vlans_changed = true; | |
4290 | } | |
4291 | } else { | |
4292 | ofproto->vlans_changed = true; | |
4293 | } | |
4294 | } | |
4295 | ||
4296 | ofmonitor_report(ofproto->connmgr, rule, NXFME_ADDED, 0, | |
cdbdeeda | 4297 | req ? req->ofconn : NULL, req ? req->xid : 0, NULL); |
834fe5cb BP |
4298 | |
4299 | return req ? send_buffered_packet(req->ofconn, fm->buffer_id, rule) : 0; | |
064af421 | 4300 | } |
79eee1eb BP |
4301 | \f |
4302 | /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */ | |
064af421 | 4303 | |
9ed18e46 BP |
4304 | /* Modifies the rules listed in 'rules', changing their actions to match those |
4305 | * in 'fm'. | |
79eee1eb | 4306 | * |
9ed18e46 BP |
4307 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, |
4308 | * if any. | |
4309 | * | |
4310 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 4311 | static enum ofperr |
baae3d02 BP |
4312 | modify_flows__(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4313 | const struct rule_collection *rules, | |
4314 | const struct flow_mod_requester *req) | |
15aaf599 | 4315 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4316 | { |
35f48b8b | 4317 | struct list dead_cookies = LIST_INITIALIZER(&dead_cookies); |
834fe5cb | 4318 | enum nx_flow_update_event event; |
a8e547c1 | 4319 | size_t i; |
79eee1eb | 4320 | |
af822017 BP |
4321 | if (ofproto->ofproto_class->rule_premodify_actions) { |
4322 | for (i = 0; i < rules->n; i++) { | |
4323 | struct rule *rule = rules->rules[i]; | |
cb220b39 | 4324 | enum ofperr error; |
af822017 | 4325 | |
dd51dae2 BP |
4326 | error = ofproto->ofproto_class->rule_premodify_actions( |
4327 | rule, fm->ofpacts, fm->ofpacts_len); | |
4328 | if (error) { | |
4329 | return error; | |
af822017 BP |
4330 | } |
4331 | } | |
4332 | } | |
4333 | ||
834fe5cb | 4334 | event = fm->command == OFPFC_ADD ? NXFME_ADDED : NXFME_MODIFIED; |
a8e547c1 BP |
4335 | for (i = 0; i < rules->n; i++) { |
4336 | struct rule *rule = rules->rules[i]; | |
08043761 | 4337 | |
834fe5cb BP |
4338 | /* 'fm' says that */ |
4339 | bool change_cookie = (fm->modify_cookie | |
4340 | && fm->new_cookie != OVS_BE64_MAX | |
4341 | && fm->new_cookie != rule->flow_cookie); | |
2e1ae200 | 4342 | |
834fe5cb BP |
4343 | const struct rule_actions *actions = rule_get_actions(rule); |
4344 | bool change_actions = !ofpacts_equal(fm->ofpacts, fm->ofpacts_len, | |
4345 | actions->ofpacts, | |
4346 | actions->ofpacts_len); | |
5c67e4af | 4347 | |
834fe5cb | 4348 | bool reset_counters = (fm->flags & OFPUTIL_FF_RESET_COUNTS) != 0; |
a7d94793 | 4349 | |
834fe5cb BP |
4350 | long long int now = time_msec(); |
4351 | ||
834fe5cb BP |
4352 | if (change_cookie) { |
4353 | cookies_remove(ofproto, rule); | |
98eaac36 | 4354 | } |
834fe5cb BP |
4355 | |
4356 | ovs_mutex_lock(&rule->mutex); | |
4357 | if (fm->command == OFPFC_ADD) { | |
b277c7cc BP |
4358 | rule->idle_timeout = fm->idle_timeout; |
4359 | rule->hard_timeout = fm->hard_timeout; | |
ca26eb44 | 4360 | rule->importance = fm->importance; |
3f517bcd | 4361 | rule->flags = fm->flags & OFPUTIL_FF_STATE; |
834fe5cb BP |
4362 | rule->created = now; |
4363 | } | |
4364 | if (change_cookie) { | |
4365 | rule->flow_cookie = fm->new_cookie; | |
4366 | } | |
4367 | rule->modified = now; | |
4368 | ovs_mutex_unlock(&rule->mutex); | |
4369 | ||
4370 | if (change_cookie) { | |
4371 | cookies_insert(ofproto, rule); | |
4372 | } | |
4373 | if (fm->command == OFPFC_ADD) { | |
ca26eb44 | 4374 | if (fm->idle_timeout || fm->hard_timeout || fm->importance) { |
b277c7cc BP |
4375 | if (!rule->eviction_group) { |
4376 | eviction_group_add_rule(rule); | |
4377 | } | |
4378 | } else { | |
4379 | eviction_group_remove_rule(rule); | |
4380 | } | |
4381 | } | |
4382 | ||
834fe5cb | 4383 | if (change_actions) { |
4c7562c5 | 4384 | ovsrcu_set(&rule->actions, rule_actions_create(fm->ofpacts, |
834fe5cb | 4385 | fm->ofpacts_len)); |
834fe5cb | 4386 | } |
884e1dc4 | 4387 | |
834fe5cb | 4388 | if (change_actions || reset_counters) { |
af822017 | 4389 | ofproto->ofproto_class->rule_modify_actions(rule, reset_counters); |
623e1caf | 4390 | } |
834fe5cb BP |
4391 | |
4392 | if (event != NXFME_MODIFIED || change_actions || change_cookie) { | |
4393 | ofmonitor_report(ofproto->connmgr, rule, event, 0, | |
cdbdeeda SH |
4394 | req ? req->ofconn : NULL, req ? req->xid : 0, |
4395 | change_actions ? actions : NULL); | |
834fe5cb | 4396 | } |
35f48b8b BP |
4397 | |
4398 | if (change_actions) { | |
4399 | learned_cookies_inc(ofproto, rule_get_actions(rule)); | |
4400 | learned_cookies_dec(ofproto, actions, &dead_cookies); | |
cdbdeeda | 4401 | rule_actions_destroy(actions); |
35f48b8b | 4402 | } |
834fe5cb | 4403 | } |
35f48b8b | 4404 | learned_cookies_flush(ofproto, &dead_cookies); |
834fe5cb BP |
4405 | |
4406 | if (fm->buffer_id != UINT32_MAX && req) { | |
cb220b39 SH |
4407 | return send_buffered_packet(req->ofconn, fm->buffer_id, |
4408 | rules->rules[0]); | |
5ecc9d81 | 4409 | } |
79eee1eb | 4410 | |
cb220b39 | 4411 | return 0; |
9ed18e46 BP |
4412 | } |
4413 | ||
9387b970 | 4414 | static enum ofperr |
baae3d02 BP |
4415 | modify_flows_add(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4416 | const struct flow_mod_requester *req) | |
15aaf599 | 4417 | OVS_REQUIRES(ofproto_mutex) |
9387b970 | 4418 | { |
b8266395 | 4419 | if (fm->cookie_mask != htonll(0) || fm->new_cookie == OVS_BE64_MAX) { |
9387b970 SH |
4420 | return 0; |
4421 | } | |
baae3d02 | 4422 | return add_flow(ofproto, fm, req); |
9387b970 SH |
4423 | } |
4424 | ||
90bf1e07 BP |
4425 | /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on |
4426 | * failure. | |
9ed18e46 BP |
4427 | * |
4428 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, | |
4429 | * if any. */ | |
90bf1e07 | 4430 | static enum ofperr |
baae3d02 BP |
4431 | modify_flows_loose(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4432 | const struct flow_mod_requester *req) | |
15aaf599 | 4433 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 4434 | { |
a9b22b7f | 4435 | struct rule_criteria criteria; |
a8e547c1 | 4436 | struct rule_collection rules; |
9ed18e46 BP |
4437 | int error; |
4438 | ||
a9b22b7f BP |
4439 | rule_criteria_init(&criteria, fm->table_id, &fm->match, 0, |
4440 | fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG11_ANY); | |
dd51dae2 BP |
4441 | rule_criteria_require_rw(&criteria, |
4442 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
a9b22b7f BP |
4443 | error = collect_rules_loose(ofproto, &criteria, &rules); |
4444 | rule_criteria_destroy(&criteria); | |
4445 | ||
a8e547c1 BP |
4446 | if (!error) { |
4447 | error = (rules.n > 0 | |
baae3d02 BP |
4448 | ? modify_flows__(ofproto, fm, &rules, req) |
4449 | : modify_flows_add(ofproto, fm, req)); | |
623e1caf | 4450 | } |
a8e547c1 BP |
4451 | |
4452 | rule_collection_destroy(&rules); | |
4453 | ||
4454 | return error; | |
79eee1eb BP |
4455 | } |
4456 | ||
4457 | /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error | |
baae3d02 | 4458 | * code on failure. */ |
90bf1e07 | 4459 | static enum ofperr |
baae3d02 BP |
4460 | modify_flow_strict(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4461 | const struct flow_mod_requester *req) | |
15aaf599 | 4462 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4463 | { |
a9b22b7f | 4464 | struct rule_criteria criteria; |
a8e547c1 | 4465 | struct rule_collection rules; |
6c1491fb BP |
4466 | int error; |
4467 | ||
a9b22b7f BP |
4468 | rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority, |
4469 | fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG11_ANY); | |
dd51dae2 BP |
4470 | rule_criteria_require_rw(&criteria, |
4471 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
a9b22b7f BP |
4472 | error = collect_rules_strict(ofproto, &criteria, &rules); |
4473 | rule_criteria_destroy(&criteria); | |
4474 | ||
a8e547c1 BP |
4475 | if (!error) { |
4476 | if (rules.n == 0) { | |
baae3d02 | 4477 | error = modify_flows_add(ofproto, fm, req); |
a8e547c1 | 4478 | } else if (rules.n == 1) { |
baae3d02 | 4479 | error = modify_flows__(ofproto, fm, &rules, req); |
a8e547c1 | 4480 | } |
623e1caf | 4481 | } |
a8e547c1 BP |
4482 | |
4483 | rule_collection_destroy(&rules); | |
4484 | ||
4485 | return error; | |
79eee1eb | 4486 | } |
9ed18e46 BP |
4487 | \f |
4488 | /* OFPFC_DELETE implementation. */ | |
79eee1eb | 4489 | |
9ca4a86f | 4490 | /* Deletes the rules listed in 'rules'. */ |
254750ce | 4491 | static void |
9ca4a86f | 4492 | delete_flows__(const struct rule_collection *rules, |
baae3d02 BP |
4493 | enum ofp_flow_removed_reason reason, |
4494 | const struct flow_mod_requester *req) | |
15aaf599 | 4495 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 4496 | { |
9ca4a86f | 4497 | if (rules->n) { |
35f48b8b | 4498 | struct list dead_cookies = LIST_INITIALIZER(&dead_cookies); |
9ca4a86f BP |
4499 | struct ofproto *ofproto = rules->rules[0]->ofproto; |
4500 | size_t i; | |
79eee1eb | 4501 | |
9ca4a86f BP |
4502 | for (i = 0; i < rules->n; i++) { |
4503 | struct rule *rule = rules->rules[i]; | |
35f48b8b | 4504 | const struct rule_actions *actions = rule_get_actions(rule); |
79eee1eb | 4505 | |
9ca4a86f BP |
4506 | ofproto_rule_send_removed(rule, reason); |
4507 | ||
4508 | ofmonitor_report(ofproto->connmgr, rule, NXFME_DELETED, reason, | |
cdbdeeda SH |
4509 | req ? req->ofconn : NULL, req ? req->xid : 0, |
4510 | NULL); | |
9ca4a86f BP |
4511 | oftable_remove_rule(rule); |
4512 | ofproto->ofproto_class->rule_delete(rule); | |
35f48b8b BP |
4513 | |
4514 | learned_cookies_dec(ofproto, actions, &dead_cookies); | |
9ca4a86f | 4515 | } |
35f48b8b | 4516 | learned_cookies_flush(ofproto, &dead_cookies); |
9ca4a86f BP |
4517 | ofmonitor_flush(ofproto->connmgr); |
4518 | } | |
79eee1eb | 4519 | } |
79eee1eb BP |
4520 | |
4521 | /* Implements OFPFC_DELETE. */ | |
90bf1e07 | 4522 | static enum ofperr |
baae3d02 | 4523 | delete_flows_loose(struct ofproto *ofproto, |
7024dffe | 4524 | const struct ofputil_flow_mod *fm, |
baae3d02 | 4525 | const struct flow_mod_requester *req) |
15aaf599 | 4526 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4527 | { |
a9b22b7f | 4528 | struct rule_criteria criteria; |
a8e547c1 | 4529 | struct rule_collection rules; |
90bf1e07 | 4530 | enum ofperr error; |
064af421 | 4531 | |
a9b22b7f BP |
4532 | rule_criteria_init(&criteria, fm->table_id, &fm->match, 0, |
4533 | fm->cookie, fm->cookie_mask, | |
4534 | fm->out_port, fm->out_group); | |
dd51dae2 BP |
4535 | rule_criteria_require_rw(&criteria, |
4536 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
a9b22b7f BP |
4537 | error = collect_rules_loose(ofproto, &criteria, &rules); |
4538 | rule_criteria_destroy(&criteria); | |
4539 | ||
a8e547c1 | 4540 | if (!error && rules.n > 0) { |
9ca4a86f | 4541 | delete_flows__(&rules, fm->delete_reason, req); |
a8e547c1 BP |
4542 | } |
4543 | rule_collection_destroy(&rules); | |
4544 | ||
4545 | return error; | |
064af421 BP |
4546 | } |
4547 | ||
79eee1eb | 4548 | /* Implements OFPFC_DELETE_STRICT. */ |
90bf1e07 | 4549 | static enum ofperr |
baae3d02 BP |
4550 | delete_flow_strict(struct ofproto *ofproto, const struct ofputil_flow_mod *fm, |
4551 | const struct flow_mod_requester *req) | |
15aaf599 | 4552 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4553 | { |
a9b22b7f | 4554 | struct rule_criteria criteria; |
a8e547c1 | 4555 | struct rule_collection rules; |
90bf1e07 | 4556 | enum ofperr error; |
79eee1eb | 4557 | |
a9b22b7f BP |
4558 | rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority, |
4559 | fm->cookie, fm->cookie_mask, | |
4560 | fm->out_port, fm->out_group); | |
dd51dae2 BP |
4561 | rule_criteria_require_rw(&criteria, |
4562 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
a9b22b7f BP |
4563 | error = collect_rules_strict(ofproto, &criteria, &rules); |
4564 | rule_criteria_destroy(&criteria); | |
4565 | ||
a8e547c1 | 4566 | if (!error && rules.n > 0) { |
9ca4a86f | 4567 | delete_flows__(&rules, fm->delete_reason, req); |
a8e547c1 BP |
4568 | } |
4569 | rule_collection_destroy(&rules); | |
4570 | ||
4571 | return error; | |
abe529af BP |
4572 | } |
4573 | ||
4574 | static void | |
4575 | ofproto_rule_send_removed(struct rule *rule, uint8_t reason) | |
15aaf599 | 4576 | OVS_REQUIRES(ofproto_mutex) |
abe529af BP |
4577 | { |
4578 | struct ofputil_flow_removed fr; | |
dc437090 | 4579 | long long int used; |
abe529af | 4580 | |
834fe5cb BP |
4581 | if (rule_is_hidden(rule) || |
4582 | !(rule->flags & OFPUTIL_FF_SEND_FLOW_REM)) { | |
abe529af BP |
4583 | return; |
4584 | } | |
4585 | ||
5cb7a798 | 4586 | minimatch_expand(&rule->cr.match, &fr.match); |
81a76618 | 4587 | fr.priority = rule->cr.priority; |
abe529af BP |
4588 | fr.cookie = rule->flow_cookie; |
4589 | fr.reason = reason; | |
95216219 | 4590 | fr.table_id = rule->table_id; |
65e0be10 BP |
4591 | calc_duration(rule->created, time_msec(), |
4592 | &fr.duration_sec, &fr.duration_nsec); | |
d10976b7 | 4593 | ovs_mutex_lock(&rule->mutex); |
abe529af | 4594 | fr.idle_timeout = rule->idle_timeout; |
fa2bad0f | 4595 | fr.hard_timeout = rule->hard_timeout; |
d10976b7 | 4596 | ovs_mutex_unlock(&rule->mutex); |
abe529af | 4597 | rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count, |
dc437090 | 4598 | &fr.byte_count, &used); |
abe529af BP |
4599 | |
4600 | connmgr_send_flow_removed(rule->ofproto->connmgr, &fr); | |
4601 | } | |
4602 | ||
4603 | /* Sends an OpenFlow "flow removed" message with the given 'reason' (either | |
4604 | * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its | |
4605 | * ofproto. | |
4606 | * | |
4607 | * ofproto implementation ->run() functions should use this function to expire | |
4608 | * OpenFlow flows. */ | |
4609 | void | |
4610 | ofproto_rule_expire(struct rule *rule, uint8_t reason) | |
15aaf599 | 4611 | OVS_REQUIRES(ofproto_mutex) |
abe529af | 4612 | { |
b20f4073 | 4613 | ofproto_rule_delete__(rule, reason); |
79eee1eb | 4614 | } |
994c9973 BP |
4615 | |
4616 | /* Reduces '*timeout' to no more than 'max'. A value of zero in either case | |
4617 | * means "infinite". */ | |
4618 | static void | |
4619 | reduce_timeout(uint16_t max, uint16_t *timeout) | |
4620 | { | |
4621 | if (max && (!*timeout || *timeout > max)) { | |
4622 | *timeout = max; | |
4623 | } | |
4624 | } | |
4625 | ||
4626 | /* If 'idle_timeout' is nonzero, and 'rule' has no idle timeout or an idle | |
4627 | * timeout greater than 'idle_timeout', lowers 'rule''s idle timeout to | |
4628 | * 'idle_timeout' seconds. Similarly for 'hard_timeout'. | |
4629 | * | |
4630 | * Suitable for implementing OFPACT_FIN_TIMEOUT. */ | |
4631 | void | |
4632 | ofproto_rule_reduce_timeouts(struct rule *rule, | |
4633 | uint16_t idle_timeout, uint16_t hard_timeout) | |
d10976b7 | 4634 | OVS_EXCLUDED(ofproto_mutex, rule->mutex) |
994c9973 BP |
4635 | { |
4636 | if (!idle_timeout && !hard_timeout) { | |
4637 | return; | |
4638 | } | |
4639 | ||
abe7b10f | 4640 | ovs_mutex_lock(&ofproto_mutex); |
994c9973 BP |
4641 | if (list_is_empty(&rule->expirable)) { |
4642 | list_insert(&rule->ofproto->expirable, &rule->expirable); | |
4643 | } | |
abe7b10f | 4644 | ovs_mutex_unlock(&ofproto_mutex); |
994c9973 | 4645 | |
d10976b7 | 4646 | ovs_mutex_lock(&rule->mutex); |
994c9973 BP |
4647 | reduce_timeout(idle_timeout, &rule->idle_timeout); |
4648 | reduce_timeout(hard_timeout, &rule->hard_timeout); | |
d10976b7 | 4649 | ovs_mutex_unlock(&rule->mutex); |
994c9973 | 4650 | } |
79eee1eb | 4651 | \f |
90bf1e07 | 4652 | static enum ofperr |
2e4f5fcf | 4653 | handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
15aaf599 | 4654 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 4655 | { |
a5b8d268 | 4656 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
a9a2da38 | 4657 | struct ofputil_flow_mod fm; |
f25d0cf3 BP |
4658 | uint64_t ofpacts_stub[1024 / 8]; |
4659 | struct ofpbuf ofpacts; | |
90bf1e07 | 4660 | enum ofperr error; |
064af421 | 4661 | |
76589937 | 4662 | error = reject_slave_controller(ofconn); |
9deba63b | 4663 | if (error) { |
f25d0cf3 | 4664 | goto exit; |
9deba63b | 4665 | } |
3052b0c5 | 4666 | |
f25d0cf3 BP |
4667 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
4668 | error = ofputil_decode_flow_mod(&fm, oh, ofconn_get_protocol(ofconn), | |
7e9f8266 BP |
4669 | &ofpacts, |
4670 | u16_to_ofp(ofproto->max_ports), | |
4671 | ofproto->n_tables); | |
4672 | if (!error) { | |
4673 | error = ofproto_check_ofpacts(ofproto, fm.ofpacts, fm.ofpacts_len); | |
4674 | } | |
548de4dd | 4675 | if (!error) { |
baae3d02 BP |
4676 | struct flow_mod_requester req; |
4677 | ||
4678 | req.ofconn = ofconn; | |
834fe5cb | 4679 | req.xid = oh->xid; |
baae3d02 | 4680 | error = handle_flow_mod__(ofproto, &fm, &req); |
49bdc010 | 4681 | } |
a5b8d268 | 4682 | if (error) { |
f25d0cf3 | 4683 | goto exit_free_ofpacts; |
a5b8d268 | 4684 | } |
2e310801 | 4685 | |
696d1bcf | 4686 | ofconn_report_flow_mod(ofconn, fm.command); |
a5b8d268 | 4687 | |
f25d0cf3 BP |
4688 | exit_free_ofpacts: |
4689 | ofpbuf_uninit(&ofpacts); | |
4690 | exit: | |
4691 | return error; | |
75a75043 BP |
4692 | } |
4693 | ||
90bf1e07 | 4694 | static enum ofperr |
baae3d02 BP |
4695 | handle_flow_mod__(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4696 | const struct flow_mod_requester *req) | |
15aaf599 | 4697 | OVS_EXCLUDED(ofproto_mutex) |
75a75043 | 4698 | { |
35412852 | 4699 | enum ofperr error; |
75a75043 | 4700 | |
15aaf599 | 4701 | ovs_mutex_lock(&ofproto_mutex); |
baae3d02 BP |
4702 | switch (fm->command) { |
4703 | case OFPFC_ADD: | |
4704 | error = add_flow(ofproto, fm, req); | |
4705 | break; | |
3052b0c5 | 4706 | |
baae3d02 BP |
4707 | case OFPFC_MODIFY: |
4708 | error = modify_flows_loose(ofproto, fm, req); | |
4709 | break; | |
3052b0c5 | 4710 | |
baae3d02 BP |
4711 | case OFPFC_MODIFY_STRICT: |
4712 | error = modify_flow_strict(ofproto, fm, req); | |
4713 | break; | |
3052b0c5 | 4714 | |
baae3d02 BP |
4715 | case OFPFC_DELETE: |
4716 | error = delete_flows_loose(ofproto, fm, req); | |
4717 | break; | |
3052b0c5 | 4718 | |
baae3d02 BP |
4719 | case OFPFC_DELETE_STRICT: |
4720 | error = delete_flow_strict(ofproto, fm, req); | |
4721 | break; | |
3052b0c5 | 4722 | |
baae3d02 BP |
4723 | default: |
4724 | if (fm->command > 0xff) { | |
4725 | VLOG_WARN_RL(&rl, "%s: flow_mod has explicit table_id but " | |
4726 | "flow_mod_table_id extension is not enabled", | |
4727 | ofproto->name); | |
6c1491fb | 4728 | } |
baae3d02 BP |
4729 | error = OFPERR_OFPFMFC_BAD_COMMAND; |
4730 | break; | |
3052b0c5 | 4731 | } |
baae3d02 | 4732 | ofmonitor_flush(ofproto->connmgr); |
15aaf599 | 4733 | ovs_mutex_unlock(&ofproto_mutex); |
35412852 BP |
4734 | |
4735 | run_rule_executes(ofproto); | |
4736 | return error; | |
3052b0c5 BP |
4737 | } |
4738 | ||
90bf1e07 | 4739 | static enum ofperr |
d1e2cf21 | 4740 | handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh) |
9deba63b | 4741 | { |
f4f1ea7e BP |
4742 | struct ofputil_role_request request; |
4743 | struct ofputil_role_request reply; | |
9deba63b | 4744 | struct ofpbuf *buf; |
6ea4776b JR |
4745 | enum ofperr error; |
4746 | ||
f4f1ea7e | 4747 | error = ofputil_decode_role_message(oh, &request); |
6ea4776b JR |
4748 | if (error) { |
4749 | return error; | |
4750 | } | |
9deba63b | 4751 | |
f4f1ea7e | 4752 | if (request.role != OFPCR12_ROLE_NOCHANGE) { |
f4f1ea7e BP |
4753 | if (request.have_generation_id |
4754 | && !ofconn_set_master_election_id(ofconn, request.generation_id)) { | |
4755 | return OFPERR_OFPRRFC_STALE; | |
6ea4776b | 4756 | } |
6ea4776b | 4757 | |
f4f1ea7e BP |
4758 | ofconn_set_role(ofconn, request.role); |
4759 | } | |
9deba63b | 4760 | |
f4f1ea7e | 4761 | reply.role = ofconn_get_role(ofconn); |
147cc9d3 BP |
4762 | reply.have_generation_id = ofconn_get_master_election_id( |
4763 | ofconn, &reply.generation_id); | |
f4f1ea7e | 4764 | buf = ofputil_encode_role_reply(oh, &reply); |
b0421aa2 | 4765 | ofconn_send_reply(ofconn, buf); |
9deba63b BP |
4766 | |
4767 | return 0; | |
4768 | } | |
4769 | ||
90bf1e07 | 4770 | static enum ofperr |
6c1491fb BP |
4771 | handle_nxt_flow_mod_table_id(struct ofconn *ofconn, |
4772 | const struct ofp_header *oh) | |
4773 | { | |
982697a4 | 4774 | const struct nx_flow_mod_table_id *msg = ofpmsg_body(oh); |
27527aa0 BP |
4775 | enum ofputil_protocol cur, next; |
4776 | ||
4777 | cur = ofconn_get_protocol(ofconn); | |
4778 | next = ofputil_protocol_set_tid(cur, msg->set != 0); | |
4779 | ofconn_set_protocol(ofconn, next); | |
6c1491fb | 4780 | |
6c1491fb BP |
4781 | return 0; |
4782 | } | |
4783 | ||
90bf1e07 | 4784 | static enum ofperr |
d1e2cf21 | 4785 | handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh) |
09246b99 | 4786 | { |
982697a4 | 4787 | const struct nx_set_flow_format *msg = ofpmsg_body(oh); |
27527aa0 BP |
4788 | enum ofputil_protocol cur, next; |
4789 | enum ofputil_protocol next_base; | |
09246b99 | 4790 | |
27527aa0 BP |
4791 | next_base = ofputil_nx_flow_format_to_protocol(ntohl(msg->format)); |
4792 | if (!next_base) { | |
90bf1e07 | 4793 | return OFPERR_OFPBRC_EPERM; |
09246b99 | 4794 | } |
7ee20df1 | 4795 | |
27527aa0 BP |
4796 | cur = ofconn_get_protocol(ofconn); |
4797 | next = ofputil_protocol_set_base(cur, next_base); | |
27527aa0 | 4798 | ofconn_set_protocol(ofconn, next); |
b20f4073 | 4799 | |
7ee20df1 | 4800 | return 0; |
09246b99 BP |
4801 | } |
4802 | ||
90bf1e07 | 4803 | static enum ofperr |
54834960 EJ |
4804 | handle_nxt_set_packet_in_format(struct ofconn *ofconn, |
4805 | const struct ofp_header *oh) | |
4806 | { | |
982697a4 | 4807 | const struct nx_set_packet_in_format *msg = ofpmsg_body(oh); |
54834960 EJ |
4808 | uint32_t format; |
4809 | ||
54834960 | 4810 | format = ntohl(msg->format); |
a15f0eeb | 4811 | if (format != NXPIF_OPENFLOW10 && format != NXPIF_NXM) { |
90bf1e07 | 4812 | return OFPERR_OFPBRC_EPERM; |
54834960 EJ |
4813 | } |
4814 | ||
54834960 EJ |
4815 | ofconn_set_packet_in_format(ofconn, format); |
4816 | return 0; | |
4817 | } | |
4818 | ||
80d5aefd BP |
4819 | static enum ofperr |
4820 | handle_nxt_set_async_config(struct ofconn *ofconn, const struct ofp_header *oh) | |
4821 | { | |
982697a4 | 4822 | const struct nx_async_config *msg = ofpmsg_body(oh); |
80d5aefd BP |
4823 | uint32_t master[OAM_N_TYPES]; |
4824 | uint32_t slave[OAM_N_TYPES]; | |
4825 | ||
4826 | master[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[0]); | |
4827 | master[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[0]); | |
4828 | master[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[0]); | |
4829 | ||
4830 | slave[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[1]); | |
4831 | slave[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[1]); | |
4832 | slave[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[1]); | |
4833 | ||
4834 | ofconn_set_async_config(ofconn, master, slave); | |
4550b647 MM |
4835 | if (ofconn_get_type(ofconn) == OFCONN_SERVICE && |
4836 | !ofconn_get_miss_send_len(ofconn)) { | |
4837 | ofconn_set_miss_send_len(ofconn, OFP_DEFAULT_MISS_SEND_LEN); | |
4838 | } | |
80d5aefd BP |
4839 | |
4840 | return 0; | |
4841 | } | |
4842 | ||
c423b3b3 AC |
4843 | static enum ofperr |
4844 | handle_nxt_get_async_request(struct ofconn *ofconn, const struct ofp_header *oh) | |
4845 | { | |
4846 | struct ofpbuf *buf; | |
4847 | uint32_t master[OAM_N_TYPES]; | |
4848 | uint32_t slave[OAM_N_TYPES]; | |
4849 | struct nx_async_config *msg; | |
4850 | ||
4851 | ofconn_get_async_config(ofconn, master, slave); | |
4852 | buf = ofpraw_alloc_reply(OFPRAW_OFPT13_GET_ASYNC_REPLY, oh, 0); | |
4853 | msg = ofpbuf_put_zeros(buf, sizeof *msg); | |
4854 | ||
4855 | msg->packet_in_mask[0] = htonl(master[OAM_PACKET_IN]); | |
4856 | msg->port_status_mask[0] = htonl(master[OAM_PORT_STATUS]); | |
4857 | msg->flow_removed_mask[0] = htonl(master[OAM_FLOW_REMOVED]); | |
4858 | ||
4859 | msg->packet_in_mask[1] = htonl(slave[OAM_PACKET_IN]); | |
4860 | msg->port_status_mask[1] = htonl(slave[OAM_PORT_STATUS]); | |
4861 | msg->flow_removed_mask[1] = htonl(slave[OAM_FLOW_REMOVED]); | |
4862 | ||
4863 | ofconn_send_reply(ofconn, buf); | |
4864 | ||
4865 | return 0; | |
4866 | } | |
4867 | ||
a7349929 BP |
4868 | static enum ofperr |
4869 | handle_nxt_set_controller_id(struct ofconn *ofconn, | |
4870 | const struct ofp_header *oh) | |
4871 | { | |
982697a4 | 4872 | const struct nx_controller_id *nci = ofpmsg_body(oh); |
a7349929 | 4873 | |
a7349929 BP |
4874 | if (!is_all_zeros(nci->zero, sizeof nci->zero)) { |
4875 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
4876 | } | |
4877 | ||
4878 | ofconn_set_controller_id(ofconn, ntohs(nci->controller_id)); | |
4879 | return 0; | |
4880 | } | |
4881 | ||
90bf1e07 | 4882 | static enum ofperr |
d1e2cf21 | 4883 | handle_barrier_request(struct ofconn *ofconn, const struct ofp_header *oh) |
246e61ea | 4884 | { |
246e61ea JP |
4885 | struct ofpbuf *buf; |
4886 | ||
982697a4 BP |
4887 | buf = ofpraw_alloc_reply((oh->version == OFP10_VERSION |
4888 | ? OFPRAW_OFPT10_BARRIER_REPLY | |
4889 | : OFPRAW_OFPT11_BARRIER_REPLY), oh, 0); | |
b0421aa2 | 4890 | ofconn_send_reply(ofconn, buf); |
246e61ea JP |
4891 | return 0; |
4892 | } | |
4893 | ||
2b07c8b1 BP |
4894 | static void |
4895 | ofproto_compose_flow_refresh_update(const struct rule *rule, | |
4896 | enum nx_flow_monitor_flags flags, | |
4897 | struct list *msgs) | |
15aaf599 | 4898 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 | 4899 | { |
6f00e29b | 4900 | const struct rule_actions *actions; |
2b07c8b1 | 4901 | struct ofputil_flow_update fu; |
5cb7a798 | 4902 | struct match match; |
2b07c8b1 | 4903 | |
2b07c8b1 BP |
4904 | fu.event = (flags & (NXFMF_INITIAL | NXFMF_ADD) |
4905 | ? NXFME_ADDED : NXFME_MODIFIED); | |
4906 | fu.reason = 0; | |
d10976b7 | 4907 | ovs_mutex_lock(&rule->mutex); |
2b07c8b1 BP |
4908 | fu.idle_timeout = rule->idle_timeout; |
4909 | fu.hard_timeout = rule->hard_timeout; | |
d10976b7 | 4910 | ovs_mutex_unlock(&rule->mutex); |
2b07c8b1 BP |
4911 | fu.table_id = rule->table_id; |
4912 | fu.cookie = rule->flow_cookie; | |
5cb7a798 BP |
4913 | minimatch_expand(&rule->cr.match, &match); |
4914 | fu.match = &match; | |
6b140a4e | 4915 | fu.priority = rule->cr.priority; |
6f00e29b | 4916 | |
b20f4073 | 4917 | actions = flags & NXFMF_ACTIONS ? rule_get_actions(rule) : NULL; |
6f00e29b BP |
4918 | fu.ofpacts = actions ? actions->ofpacts : NULL; |
4919 | fu.ofpacts_len = actions ? actions->ofpacts_len : 0; | |
2b07c8b1 BP |
4920 | |
4921 | if (list_is_empty(msgs)) { | |
4922 | ofputil_start_flow_update(msgs); | |
4923 | } | |
4924 | ofputil_append_flow_update(&fu, msgs); | |
4925 | } | |
4926 | ||
4927 | void | |
a8e547c1 BP |
4928 | ofmonitor_compose_refresh_updates(struct rule_collection *rules, |
4929 | struct list *msgs) | |
15aaf599 | 4930 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 | 4931 | { |
a8e547c1 | 4932 | size_t i; |
2b07c8b1 | 4933 | |
a8e547c1 BP |
4934 | for (i = 0; i < rules->n; i++) { |
4935 | struct rule *rule = rules->rules[i]; | |
2b07c8b1 BP |
4936 | enum nx_flow_monitor_flags flags = rule->monitor_flags; |
4937 | rule->monitor_flags = 0; | |
4938 | ||
4939 | ofproto_compose_flow_refresh_update(rule, flags, msgs); | |
4940 | } | |
4941 | } | |
4942 | ||
4943 | static void | |
4944 | ofproto_collect_ofmonitor_refresh_rule(const struct ofmonitor *m, | |
4945 | struct rule *rule, uint64_t seqno, | |
a8e547c1 | 4946 | struct rule_collection *rules) |
15aaf599 | 4947 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
4948 | { |
4949 | enum nx_flow_monitor_flags update; | |
4950 | ||
5e8b38b0 | 4951 | if (rule_is_hidden(rule)) { |
2b07c8b1 BP |
4952 | return; |
4953 | } | |
4954 | ||
b20f4073 | 4955 | if (!ofproto_rule_has_out_port(rule, m->out_port)) { |
2b07c8b1 BP |
4956 | return; |
4957 | } | |
4958 | ||
4959 | if (seqno) { | |
4960 | if (rule->add_seqno > seqno) { | |
4961 | update = NXFMF_ADD | NXFMF_MODIFY; | |
4962 | } else if (rule->modify_seqno > seqno) { | |
4963 | update = NXFMF_MODIFY; | |
4964 | } else { | |
4965 | return; | |
4966 | } | |
4967 | ||
4968 | if (!(m->flags & update)) { | |
4969 | return; | |
4970 | } | |
4971 | } else { | |
4972 | update = NXFMF_INITIAL; | |
4973 | } | |
4974 | ||
4975 | if (!rule->monitor_flags) { | |
a8e547c1 | 4976 | rule_collection_add(rules, rule); |
2b07c8b1 BP |
4977 | } |
4978 | rule->monitor_flags |= update | (m->flags & NXFMF_ACTIONS); | |
4979 | } | |
4980 | ||
4981 | static void | |
4982 | ofproto_collect_ofmonitor_refresh_rules(const struct ofmonitor *m, | |
4983 | uint64_t seqno, | |
a8e547c1 | 4984 | struct rule_collection *rules) |
15aaf599 | 4985 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
4986 | { |
4987 | const struct ofproto *ofproto = ofconn_get_ofproto(m->ofconn); | |
2b07c8b1 | 4988 | const struct oftable *table; |
81a76618 | 4989 | struct cls_rule target; |
2b07c8b1 | 4990 | |
5cb7a798 | 4991 | cls_rule_init_from_minimatch(&target, &m->match, 0); |
2b07c8b1 | 4992 | FOR_EACH_MATCHING_TABLE (table, m->table_id, ofproto) { |
2b07c8b1 BP |
4993 | struct rule *rule; |
4994 | ||
5f0476ce | 4995 | CLS_FOR_EACH_TARGET (rule, cr, &table->cls, &target) { |
2b07c8b1 BP |
4996 | ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules); |
4997 | } | |
4998 | } | |
48d28ac1 | 4999 | cls_rule_destroy(&target); |
2b07c8b1 BP |
5000 | } |
5001 | ||
5002 | static void | |
5003 | ofproto_collect_ofmonitor_initial_rules(struct ofmonitor *m, | |
a8e547c1 | 5004 | struct rule_collection *rules) |
15aaf599 | 5005 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
5006 | { |
5007 | if (m->flags & NXFMF_INITIAL) { | |
5008 | ofproto_collect_ofmonitor_refresh_rules(m, 0, rules); | |
5009 | } | |
5010 | } | |
5011 | ||
5012 | void | |
5013 | ofmonitor_collect_resume_rules(struct ofmonitor *m, | |
a8e547c1 | 5014 | uint64_t seqno, struct rule_collection *rules) |
15aaf599 | 5015 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
5016 | { |
5017 | ofproto_collect_ofmonitor_refresh_rules(m, seqno, rules); | |
5018 | } | |
5019 | ||
7b900689 SH |
5020 | static enum ofperr |
5021 | flow_monitor_delete(struct ofconn *ofconn, uint32_t id) | |
5022 | OVS_REQUIRES(ofproto_mutex) | |
5023 | { | |
5024 | struct ofmonitor *m; | |
5025 | enum ofperr error; | |
5026 | ||
5027 | m = ofmonitor_lookup(ofconn, id); | |
5028 | if (m) { | |
5029 | ofmonitor_destroy(m); | |
5030 | error = 0; | |
5031 | } else { | |
5032 | error = OFPERR_OFPMOFC_UNKNOWN_MONITOR; | |
5033 | } | |
5034 | ||
5035 | return error; | |
5036 | } | |
5037 | ||
2b07c8b1 | 5038 | static enum ofperr |
982697a4 | 5039 | handle_flow_monitor_request(struct ofconn *ofconn, const struct ofp_header *oh) |
15aaf599 | 5040 | OVS_EXCLUDED(ofproto_mutex) |
2b07c8b1 BP |
5041 | { |
5042 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5043 | struct ofmonitor **monitors; | |
5044 | size_t n_monitors, allocated_monitors; | |
a8e547c1 | 5045 | struct rule_collection rules; |
2b07c8b1 BP |
5046 | struct list replies; |
5047 | enum ofperr error; | |
2b07c8b1 BP |
5048 | struct ofpbuf b; |
5049 | size_t i; | |
5050 | ||
982697a4 | 5051 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
2b07c8b1 BP |
5052 | monitors = NULL; |
5053 | n_monitors = allocated_monitors = 0; | |
15aaf599 BP |
5054 | |
5055 | ovs_mutex_lock(&ofproto_mutex); | |
2b07c8b1 BP |
5056 | for (;;) { |
5057 | struct ofputil_flow_monitor_request request; | |
5058 | struct ofmonitor *m; | |
5059 | int retval; | |
5060 | ||
5061 | retval = ofputil_decode_flow_monitor_request(&request, &b); | |
5062 | if (retval == EOF) { | |
5063 | break; | |
5064 | } else if (retval) { | |
5065 | error = retval; | |
5066 | goto error; | |
5067 | } | |
5068 | ||
5069 | if (request.table_id != 0xff | |
5070 | && request.table_id >= ofproto->n_tables) { | |
5071 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
5072 | goto error; | |
5073 | } | |
5074 | ||
5075 | error = ofmonitor_create(&request, ofconn, &m); | |
5076 | if (error) { | |
5077 | goto error; | |
5078 | } | |
5079 | ||
5080 | if (n_monitors >= allocated_monitors) { | |
5081 | monitors = x2nrealloc(monitors, &allocated_monitors, | |
5082 | sizeof *monitors); | |
5083 | } | |
5084 | monitors[n_monitors++] = m; | |
5085 | } | |
5086 | ||
a8e547c1 | 5087 | rule_collection_init(&rules); |
2b07c8b1 BP |
5088 | for (i = 0; i < n_monitors; i++) { |
5089 | ofproto_collect_ofmonitor_initial_rules(monitors[i], &rules); | |
5090 | } | |
5091 | ||
982697a4 | 5092 | ofpmp_init(&replies, oh); |
2b07c8b1 | 5093 | ofmonitor_compose_refresh_updates(&rules, &replies); |
15aaf599 BP |
5094 | ovs_mutex_unlock(&ofproto_mutex); |
5095 | ||
a8e547c1 BP |
5096 | rule_collection_destroy(&rules); |
5097 | ||
2b07c8b1 | 5098 | ofconn_send_replies(ofconn, &replies); |
2b07c8b1 BP |
5099 | free(monitors); |
5100 | ||
5101 | return 0; | |
5102 | ||
5103 | error: | |
5104 | for (i = 0; i < n_monitors; i++) { | |
5105 | ofmonitor_destroy(monitors[i]); | |
5106 | } | |
5107 | free(monitors); | |
4cd1bc9d BP |
5108 | ovs_mutex_unlock(&ofproto_mutex); |
5109 | ||
2b07c8b1 BP |
5110 | return error; |
5111 | } | |
5112 | ||
5113 | static enum ofperr | |
5114 | handle_flow_monitor_cancel(struct ofconn *ofconn, const struct ofp_header *oh) | |
15aaf599 | 5115 | OVS_EXCLUDED(ofproto_mutex) |
2b07c8b1 | 5116 | { |
15aaf599 | 5117 | enum ofperr error; |
2b07c8b1 BP |
5118 | uint32_t id; |
5119 | ||
5120 | id = ofputil_decode_flow_monitor_cancel(oh); | |
15aaf599 BP |
5121 | |
5122 | ovs_mutex_lock(&ofproto_mutex); | |
7b900689 | 5123 | error = flow_monitor_delete(ofconn, id); |
15aaf599 | 5124 | ovs_mutex_unlock(&ofproto_mutex); |
2b07c8b1 | 5125 | |
15aaf599 | 5126 | return error; |
2b07c8b1 BP |
5127 | } |
5128 | ||
9cae45dc JR |
5129 | /* Meters implementation. |
5130 | * | |
5131 | * Meter table entry, indexed by the OpenFlow meter_id. | |
9cae45dc JR |
5132 | * 'created' is used to compute the duration for meter stats. |
5133 | * 'list rules' is needed so that we can delete the dependent rules when the | |
5134 | * meter table entry is deleted. | |
5135 | * 'provider_meter_id' is for the provider's private use. | |
5136 | */ | |
5137 | struct meter { | |
5138 | long long int created; /* Time created. */ | |
5139 | struct list rules; /* List of "struct rule_dpif"s. */ | |
5140 | ofproto_meter_id provider_meter_id; | |
5141 | uint16_t flags; /* Meter flags. */ | |
5142 | uint16_t n_bands; /* Number of meter bands. */ | |
5143 | struct ofputil_meter_band *bands; | |
5144 | }; | |
5145 | ||
5146 | /* | |
5147 | * This is used in instruction validation at flow set-up time, | |
5148 | * as flows may not use non-existing meters. | |
9cae45dc JR |
5149 | * Return value of UINT32_MAX signifies an invalid meter. |
5150 | */ | |
65efd2ab JR |
5151 | static uint32_t |
5152 | get_provider_meter_id(const struct ofproto *ofproto, uint32_t of_meter_id) | |
9cae45dc JR |
5153 | { |
5154 | if (of_meter_id && of_meter_id <= ofproto->meter_features.max_meters) { | |
5155 | const struct meter *meter = ofproto->meters[of_meter_id]; | |
5156 | if (meter) { | |
5157 | return meter->provider_meter_id.uint32; | |
5158 | } | |
5159 | } | |
5160 | return UINT32_MAX; | |
5161 | } | |
5162 | ||
062fea06 BP |
5163 | /* Finds the meter invoked by 'rule''s actions and adds 'rule' to the meter's |
5164 | * list of rules. */ | |
5165 | static void | |
5166 | meter_insert_rule(struct rule *rule) | |
5167 | { | |
5168 | const struct rule_actions *a = rule_get_actions(rule); | |
5169 | uint32_t meter_id = ofpacts_get_meter(a->ofpacts, a->ofpacts_len); | |
5170 | struct meter *meter = rule->ofproto->meters[meter_id]; | |
5171 | ||
5172 | list_insert(&meter->rules, &rule->meter_list_node); | |
5173 | } | |
5174 | ||
9cae45dc JR |
5175 | static void |
5176 | meter_update(struct meter *meter, const struct ofputil_meter_config *config) | |
5177 | { | |
5178 | free(meter->bands); | |
5179 | ||
5180 | meter->flags = config->flags; | |
5181 | meter->n_bands = config->n_bands; | |
5182 | meter->bands = xmemdup(config->bands, | |
5183 | config->n_bands * sizeof *meter->bands); | |
5184 | } | |
5185 | ||
5186 | static struct meter * | |
5187 | meter_create(const struct ofputil_meter_config *config, | |
5188 | ofproto_meter_id provider_meter_id) | |
5189 | { | |
5190 | struct meter *meter; | |
5191 | ||
5192 | meter = xzalloc(sizeof *meter); | |
5193 | meter->provider_meter_id = provider_meter_id; | |
5194 | meter->created = time_msec(); | |
5195 | list_init(&meter->rules); | |
5196 | ||
5197 | meter_update(meter, config); | |
5198 | ||
5199 | return meter; | |
5200 | } | |
5201 | ||
6b3f7f02 JR |
5202 | static void |
5203 | meter_delete(struct ofproto *ofproto, uint32_t first, uint32_t last) | |
15aaf599 | 5204 | OVS_REQUIRES(ofproto_mutex) |
6b3f7f02 JR |
5205 | { |
5206 | uint32_t mid; | |
5207 | for (mid = first; mid <= last; ++mid) { | |
5208 | struct meter *meter = ofproto->meters[mid]; | |
5209 | if (meter) { | |
5210 | ofproto->meters[mid] = NULL; | |
5211 | ofproto->ofproto_class->meter_del(ofproto, | |
5212 | meter->provider_meter_id); | |
5213 | free(meter->bands); | |
5214 | free(meter); | |
5215 | } | |
5216 | } | |
5217 | } | |
5218 | ||
9cae45dc JR |
5219 | static enum ofperr |
5220 | handle_add_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm) | |
5221 | { | |
5222 | ofproto_meter_id provider_meter_id = { UINT32_MAX }; | |
5223 | struct meter **meterp = &ofproto->meters[mm->meter.meter_id]; | |
5224 | enum ofperr error; | |
5225 | ||
5226 | if (*meterp) { | |
5227 | return OFPERR_OFPMMFC_METER_EXISTS; | |
5228 | } | |
5229 | ||
5230 | error = ofproto->ofproto_class->meter_set(ofproto, &provider_meter_id, | |
5231 | &mm->meter); | |
5232 | if (!error) { | |
5233 | ovs_assert(provider_meter_id.uint32 != UINT32_MAX); | |
5234 | *meterp = meter_create(&mm->meter, provider_meter_id); | |
5235 | } | |
f0f8c6c2 | 5236 | return error; |
9cae45dc JR |
5237 | } |
5238 | ||
5239 | static enum ofperr | |
5240 | handle_modify_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm) | |
5241 | { | |
5242 | struct meter *meter = ofproto->meters[mm->meter.meter_id]; | |
5243 | enum ofperr error; | |
e555eb7c | 5244 | uint32_t provider_meter_id; |
9cae45dc JR |
5245 | |
5246 | if (!meter) { | |
5247 | return OFPERR_OFPMMFC_UNKNOWN_METER; | |
5248 | } | |
5249 | ||
e555eb7c | 5250 | provider_meter_id = meter->provider_meter_id.uint32; |
9cae45dc JR |
5251 | error = ofproto->ofproto_class->meter_set(ofproto, |
5252 | &meter->provider_meter_id, | |
5253 | &mm->meter); | |
e555eb7c | 5254 | ovs_assert(meter->provider_meter_id.uint32 == provider_meter_id); |
9cae45dc JR |
5255 | if (!error) { |
5256 | meter_update(meter, &mm->meter); | |
5257 | } | |
5258 | return error; | |
5259 | } | |
5260 | ||
5261 | static enum ofperr | |
baae3d02 | 5262 | handle_delete_meter(struct ofconn *ofconn, struct ofputil_meter_mod *mm) |
15aaf599 | 5263 | OVS_EXCLUDED(ofproto_mutex) |
9cae45dc JR |
5264 | { |
5265 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5266 | uint32_t meter_id = mm->meter.meter_id; | |
a8e547c1 BP |
5267 | struct rule_collection rules; |
5268 | enum ofperr error = 0; | |
9cae45dc | 5269 | uint32_t first, last; |
9cae45dc JR |
5270 | |
5271 | if (meter_id == OFPM13_ALL) { | |
5272 | first = 1; | |
5273 | last = ofproto->meter_features.max_meters; | |
5274 | } else { | |
5275 | if (!meter_id || meter_id > ofproto->meter_features.max_meters) { | |
5276 | return 0; | |
5277 | } | |
5278 | first = last = meter_id; | |
5279 | } | |
5280 | ||
5281 | /* First delete the rules that use this meter. If any of those rules are | |
5282 | * currently being modified, postpone the whole operation until later. */ | |
a8e547c1 | 5283 | rule_collection_init(&rules); |
15aaf599 | 5284 | ovs_mutex_lock(&ofproto_mutex); |
9cae45dc JR |
5285 | for (meter_id = first; meter_id <= last; ++meter_id) { |
5286 | struct meter *meter = ofproto->meters[meter_id]; | |
5287 | if (meter && !list_is_empty(&meter->rules)) { | |
5288 | struct rule *rule; | |
5289 | ||
5290 | LIST_FOR_EACH (rule, meter_list_node, &meter->rules) { | |
a8e547c1 | 5291 | rule_collection_add(&rules, rule); |
9cae45dc JR |
5292 | } |
5293 | } | |
5294 | } | |
a8e547c1 | 5295 | if (rules.n > 0) { |
9ca4a86f | 5296 | delete_flows__(&rules, OFPRR_METER_DELETE, NULL); |
9cae45dc JR |
5297 | } |
5298 | ||
5299 | /* Delete the meters. */ | |
6b3f7f02 | 5300 | meter_delete(ofproto, first, last); |
9cae45dc | 5301 | |
15aaf599 | 5302 | ovs_mutex_unlock(&ofproto_mutex); |
a8e547c1 BP |
5303 | rule_collection_destroy(&rules); |
5304 | ||
5305 | return error; | |
9cae45dc JR |
5306 | } |
5307 | ||
5308 | static enum ofperr | |
5309 | handle_meter_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
5310 | { | |
5311 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5312 | struct ofputil_meter_mod mm; | |
5313 | uint64_t bands_stub[256 / 8]; | |
5314 | struct ofpbuf bands; | |
5315 | uint32_t meter_id; | |
5316 | enum ofperr error; | |
5317 | ||
5318 | error = reject_slave_controller(ofconn); | |
5319 | if (error) { | |
5320 | return error; | |
5321 | } | |
5322 | ||
5323 | ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub); | |
5324 | ||
5325 | error = ofputil_decode_meter_mod(oh, &mm, &bands); | |
5326 | if (error) { | |
5327 | goto exit_free_bands; | |
5328 | } | |
5329 | ||
5330 | meter_id = mm.meter.meter_id; | |
5331 | ||
5332 | if (mm.command != OFPMC13_DELETE) { | |
5333 | /* Fails also when meters are not implemented by the provider. */ | |
b31e8700 | 5334 | if (meter_id == 0 || meter_id > OFPM13_MAX) { |
9cae45dc JR |
5335 | error = OFPERR_OFPMMFC_INVALID_METER; |
5336 | goto exit_free_bands; | |
b31e8700 JR |
5337 | } else if (meter_id > ofproto->meter_features.max_meters) { |
5338 | error = OFPERR_OFPMMFC_OUT_OF_METERS; | |
5339 | goto exit_free_bands; | |
9cae45dc JR |
5340 | } |
5341 | if (mm.meter.n_bands > ofproto->meter_features.max_bands) { | |
5342 | error = OFPERR_OFPMMFC_OUT_OF_BANDS; | |
5343 | goto exit_free_bands; | |
5344 | } | |
5345 | } | |
5346 | ||
5347 | switch (mm.command) { | |
5348 | case OFPMC13_ADD: | |
5349 | error = handle_add_meter(ofproto, &mm); | |
5350 | break; | |
5351 | ||
5352 | case OFPMC13_MODIFY: | |
5353 | error = handle_modify_meter(ofproto, &mm); | |
5354 | break; | |
5355 | ||
5356 | case OFPMC13_DELETE: | |
baae3d02 | 5357 | error = handle_delete_meter(ofconn, &mm); |
9cae45dc JR |
5358 | break; |
5359 | ||
5360 | default: | |
5361 | error = OFPERR_OFPMMFC_BAD_COMMAND; | |
5362 | break; | |
5363 | } | |
5364 | ||
5365 | exit_free_bands: | |
5366 | ofpbuf_uninit(&bands); | |
5367 | return error; | |
5368 | } | |
5369 | ||
5370 | static enum ofperr | |
5371 | handle_meter_features_request(struct ofconn *ofconn, | |
5372 | const struct ofp_header *request) | |
5373 | { | |
5374 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5375 | struct ofputil_meter_features features; | |
5376 | struct ofpbuf *b; | |
5377 | ||
5378 | if (ofproto->ofproto_class->meter_get_features) { | |
5379 | ofproto->ofproto_class->meter_get_features(ofproto, &features); | |
5380 | } else { | |
5381 | memset(&features, 0, sizeof features); | |
5382 | } | |
5383 | b = ofputil_encode_meter_features_reply(&features, request); | |
5384 | ||
5385 | ofconn_send_reply(ofconn, b); | |
5386 | return 0; | |
5387 | } | |
5388 | ||
5389 | static enum ofperr | |
5390 | handle_meter_request(struct ofconn *ofconn, const struct ofp_header *request, | |
5391 | enum ofptype type) | |
5392 | { | |
5393 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5394 | struct list replies; | |
5395 | uint64_t bands_stub[256 / 8]; | |
5396 | struct ofpbuf bands; | |
5397 | uint32_t meter_id, first, last; | |
5398 | ||
5399 | ofputil_decode_meter_request(request, &meter_id); | |
5400 | ||
5401 | if (meter_id == OFPM13_ALL) { | |
5402 | first = 1; | |
5403 | last = ofproto->meter_features.max_meters; | |
5404 | } else { | |
5405 | if (!meter_id || meter_id > ofproto->meter_features.max_meters || | |
5406 | !ofproto->meters[meter_id]) { | |
5407 | return OFPERR_OFPMMFC_UNKNOWN_METER; | |
5408 | } | |
5409 | first = last = meter_id; | |
5410 | } | |
5411 | ||
5412 | ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub); | |
5413 | ofpmp_init(&replies, request); | |
5414 | ||
5415 | for (meter_id = first; meter_id <= last; ++meter_id) { | |
5416 | struct meter *meter = ofproto->meters[meter_id]; | |
5417 | if (!meter) { | |
5418 | continue; /* Skip non-existing meters. */ | |
5419 | } | |
261bd854 | 5420 | if (type == OFPTYPE_METER_STATS_REQUEST) { |
9cae45dc JR |
5421 | struct ofputil_meter_stats stats; |
5422 | ||
5423 | stats.meter_id = meter_id; | |
5424 | ||
5425 | /* Provider sets the packet and byte counts, we do the rest. */ | |
5426 | stats.flow_count = list_size(&meter->rules); | |
5427 | calc_duration(meter->created, time_msec(), | |
5428 | &stats.duration_sec, &stats.duration_nsec); | |
5429 | stats.n_bands = meter->n_bands; | |
5430 | ofpbuf_clear(&bands); | |
5431 | stats.bands | |
5432 | = ofpbuf_put_uninit(&bands, | |
5433 | meter->n_bands * sizeof *stats.bands); | |
5434 | ||
5435 | if (!ofproto->ofproto_class->meter_get(ofproto, | |
5436 | meter->provider_meter_id, | |
5437 | &stats)) { | |
5438 | ofputil_append_meter_stats(&replies, &stats); | |
5439 | } | |
5440 | } else { /* type == OFPTYPE_METER_CONFIG_REQUEST */ | |
5441 | struct ofputil_meter_config config; | |
5442 | ||
5443 | config.meter_id = meter_id; | |
5444 | config.flags = meter->flags; | |
5445 | config.n_bands = meter->n_bands; | |
5446 | config.bands = meter->bands; | |
5447 | ofputil_append_meter_config(&replies, &config); | |
5448 | } | |
5449 | } | |
5450 | ||
5451 | ofconn_send_replies(ofconn, &replies); | |
5452 | ofpbuf_uninit(&bands); | |
5453 | return 0; | |
5454 | } | |
5455 | ||
3fc3b679 AZ |
5456 | static bool |
5457 | ofproto_group_lookup__(const struct ofproto *ofproto, uint32_t group_id, | |
5458 | struct ofgroup **group) | |
5459 | OVS_REQ_RDLOCK(ofproto->groups_rwlock) | |
7395c052 | 5460 | { |
7395c052 NZ |
5461 | HMAP_FOR_EACH_IN_BUCKET (*group, hmap_node, |
5462 | hash_int(group_id, 0), &ofproto->groups) { | |
5463 | if ((*group)->group_id == group_id) { | |
7395c052 NZ |
5464 | return true; |
5465 | } | |
5466 | } | |
3fc3b679 | 5467 | |
7395c052 NZ |
5468 | return false; |
5469 | } | |
5470 | ||
3fc3b679 AZ |
5471 | /* If the group exists, this function increments the groups's reference count. |
5472 | * | |
5473 | * Make sure to call ofproto_group_unref() after no longer needing to maintain | |
5474 | * a reference to the group. */ | |
5475 | bool | |
5476 | ofproto_group_lookup(const struct ofproto *ofproto, uint32_t group_id, | |
5477 | struct ofgroup **group) | |
7395c052 | 5478 | { |
3fc3b679 AZ |
5479 | bool found; |
5480 | ||
5481 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
5482 | found = ofproto_group_lookup__(ofproto, group_id, group); | |
5483 | if (found) { | |
5484 | ofproto_group_ref(*group); | |
7395c052 | 5485 | } |
3fc3b679 AZ |
5486 | ovs_rwlock_unlock(&ofproto->groups_rwlock); |
5487 | return found; | |
7395c052 NZ |
5488 | } |
5489 | ||
5490 | static bool | |
7e9f8266 | 5491 | ofproto_group_exists__(const struct ofproto *ofproto, uint32_t group_id) |
7395c052 NZ |
5492 | OVS_REQ_RDLOCK(ofproto->groups_rwlock) |
5493 | { | |
5494 | struct ofgroup *grp; | |
5495 | ||
5496 | HMAP_FOR_EACH_IN_BUCKET (grp, hmap_node, | |
5497 | hash_int(group_id, 0), &ofproto->groups) { | |
5498 | if (grp->group_id == group_id) { | |
5499 | return true; | |
5500 | } | |
5501 | } | |
5502 | return false; | |
5503 | } | |
5504 | ||
7e9f8266 BP |
5505 | static bool |
5506 | ofproto_group_exists(const struct ofproto *ofproto, uint32_t group_id) | |
5507 | OVS_EXCLUDED(ofproto->groups_rwlock) | |
5508 | { | |
5509 | bool exists; | |
5510 | ||
5511 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
5512 | exists = ofproto_group_exists__(ofproto, group_id); | |
5513 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5514 | ||
5515 | return exists; | |
5516 | } | |
5517 | ||
732feb93 SH |
5518 | static uint32_t |
5519 | group_get_ref_count(struct ofgroup *group) | |
5520 | OVS_EXCLUDED(ofproto_mutex) | |
5521 | { | |
eaf004bd | 5522 | struct ofproto *ofproto = CONST_CAST(struct ofproto *, group->ofproto); |
732feb93 SH |
5523 | struct rule_criteria criteria; |
5524 | struct rule_collection rules; | |
5525 | struct match match; | |
5526 | enum ofperr error; | |
5527 | uint32_t count; | |
5528 | ||
5529 | match_init_catchall(&match); | |
5530 | rule_criteria_init(&criteria, 0xff, &match, 0, htonll(0), htonll(0), | |
5531 | OFPP_ANY, group->group_id); | |
5532 | ovs_mutex_lock(&ofproto_mutex); | |
5533 | error = collect_rules_loose(ofproto, &criteria, &rules); | |
5534 | ovs_mutex_unlock(&ofproto_mutex); | |
5535 | rule_criteria_destroy(&criteria); | |
5536 | ||
5537 | count = !error && rules.n < UINT32_MAX ? rules.n : UINT32_MAX; | |
5538 | ||
5539 | rule_collection_destroy(&rules); | |
5540 | return count; | |
5541 | } | |
5542 | ||
7395c052 NZ |
5543 | static void |
5544 | append_group_stats(struct ofgroup *group, struct list *replies) | |
7395c052 NZ |
5545 | { |
5546 | struct ofputil_group_stats ogs; | |
eaf004bd | 5547 | const struct ofproto *ofproto = group->ofproto; |
7395c052 NZ |
5548 | long long int now = time_msec(); |
5549 | int error; | |
5550 | ||
646b2a9c SH |
5551 | ogs.bucket_stats = xmalloc(group->n_buckets * sizeof *ogs.bucket_stats); |
5552 | ||
732feb93 SH |
5553 | /* Provider sets the packet and byte counts, we do the rest. */ |
5554 | ogs.ref_count = group_get_ref_count(group); | |
5555 | ogs.n_buckets = group->n_buckets; | |
5556 | ||
7395c052 NZ |
5557 | error = (ofproto->ofproto_class->group_get_stats |
5558 | ? ofproto->ofproto_class->group_get_stats(group, &ogs) | |
5559 | : EOPNOTSUPP); | |
5560 | if (error) { | |
7395c052 NZ |
5561 | ogs.packet_count = UINT64_MAX; |
5562 | ogs.byte_count = UINT64_MAX; | |
7395c052 NZ |
5563 | memset(ogs.bucket_stats, 0xff, |
5564 | ogs.n_buckets * sizeof *ogs.bucket_stats); | |
5565 | } | |
5566 | ||
5567 | ogs.group_id = group->group_id; | |
5568 | calc_duration(group->created, now, &ogs.duration_sec, &ogs.duration_nsec); | |
5569 | ||
5570 | ofputil_append_group_stats(replies, &ogs); | |
646b2a9c SH |
5571 | |
5572 | free(ogs.bucket_stats); | |
7395c052 NZ |
5573 | } |
5574 | ||
19187a71 BP |
5575 | static void |
5576 | handle_group_request(struct ofconn *ofconn, | |
5577 | const struct ofp_header *request, uint32_t group_id, | |
5578 | void (*cb)(struct ofgroup *, struct list *replies)) | |
7395c052 NZ |
5579 | { |
5580 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
7395c052 | 5581 | struct ofgroup *group; |
19187a71 | 5582 | struct list replies; |
7395c052 NZ |
5583 | |
5584 | ofpmp_init(&replies, request); | |
7395c052 NZ |
5585 | if (group_id == OFPG_ALL) { |
5586 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
5587 | HMAP_FOR_EACH (group, hmap_node, &ofproto->groups) { | |
19187a71 | 5588 | cb(group, &replies); |
7395c052 NZ |
5589 | } |
5590 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5591 | } else { | |
5592 | if (ofproto_group_lookup(ofproto, group_id, &group)) { | |
19187a71 | 5593 | cb(group, &replies); |
809c7548 | 5594 | ofproto_group_unref(group); |
7395c052 NZ |
5595 | } |
5596 | } | |
7395c052 | 5597 | ofconn_send_replies(ofconn, &replies); |
7395c052 NZ |
5598 | } |
5599 | ||
5600 | static enum ofperr | |
19187a71 BP |
5601 | handle_group_stats_request(struct ofconn *ofconn, |
5602 | const struct ofp_header *request) | |
7395c052 | 5603 | { |
19187a71 BP |
5604 | uint32_t group_id; |
5605 | enum ofperr error; | |
7395c052 | 5606 | |
19187a71 BP |
5607 | error = ofputil_decode_group_stats_request(request, &group_id); |
5608 | if (error) { | |
5609 | return error; | |
7395c052 | 5610 | } |
7395c052 | 5611 | |
19187a71 BP |
5612 | handle_group_request(ofconn, request, group_id, append_group_stats); |
5613 | return 0; | |
5614 | } | |
5615 | ||
5616 | static void | |
5617 | append_group_desc(struct ofgroup *group, struct list *replies) | |
5618 | { | |
5619 | struct ofputil_group_desc gds; | |
7395c052 | 5620 | |
19187a71 BP |
5621 | gds.group_id = group->group_id; |
5622 | gds.type = group->type; | |
5623 | ofputil_append_group_desc_reply(&gds, &group->buckets, replies); | |
5624 | } | |
5625 | ||
5626 | static enum ofperr | |
5627 | handle_group_desc_stats_request(struct ofconn *ofconn, | |
5628 | const struct ofp_header *request) | |
5629 | { | |
5630 | handle_group_request(ofconn, request, | |
5631 | ofputil_decode_group_desc_request(request), | |
5632 | append_group_desc); | |
7395c052 NZ |
5633 | return 0; |
5634 | } | |
5635 | ||
5636 | static enum ofperr | |
5637 | handle_group_features_stats_request(struct ofconn *ofconn, | |
5638 | const struct ofp_header *request) | |
5639 | { | |
5640 | struct ofproto *p = ofconn_get_ofproto(ofconn); | |
5641 | struct ofpbuf *msg; | |
5642 | ||
5643 | msg = ofputil_encode_group_features_reply(&p->ogf, request); | |
5644 | if (msg) { | |
5645 | ofconn_send_reply(ofconn, msg); | |
5646 | } | |
5647 | ||
5648 | return 0; | |
5649 | } | |
5650 | ||
e8f9a7bb VG |
5651 | static enum ofperr |
5652 | handle_queue_get_config_request(struct ofconn *ofconn, | |
5653 | const struct ofp_header *oh) | |
5654 | { | |
5655 | struct ofproto *p = ofconn_get_ofproto(ofconn); | |
5656 | struct netdev_queue_dump queue_dump; | |
5657 | struct ofport *ofport; | |
5658 | unsigned int queue_id; | |
5659 | struct ofpbuf *reply; | |
5660 | struct smap details; | |
5661 | ofp_port_t request; | |
5662 | enum ofperr error; | |
5663 | ||
5664 | error = ofputil_decode_queue_get_config_request(oh, &request); | |
5665 | if (error) { | |
5666 | return error; | |
5667 | } | |
5668 | ||
5669 | ofport = ofproto_get_port(p, request); | |
5670 | if (!ofport) { | |
5671 | return OFPERR_OFPQOFC_BAD_PORT; | |
5672 | } | |
5673 | ||
5674 | reply = ofputil_encode_queue_get_config_reply(oh); | |
5675 | ||
5676 | smap_init(&details); | |
5677 | NETDEV_QUEUE_FOR_EACH (&queue_id, &details, &queue_dump, ofport->netdev) { | |
5678 | struct ofputil_queue_config queue; | |
5679 | ||
5680 | /* None of the existing queues have compatible properties, so we | |
5681 | * hard-code omitting min_rate and max_rate. */ | |
5682 | queue.queue_id = queue_id; | |
5683 | queue.min_rate = UINT16_MAX; | |
5684 | queue.max_rate = UINT16_MAX; | |
5685 | ofputil_append_queue_get_config_reply(reply, &queue); | |
5686 | } | |
5687 | smap_destroy(&details); | |
5688 | ||
5689 | ofconn_send_reply(ofconn, reply); | |
5690 | ||
5691 | return 0; | |
5692 | } | |
5693 | ||
809c7548 RW |
5694 | static enum ofperr |
5695 | init_group(struct ofproto *ofproto, struct ofputil_group_mod *gm, | |
5696 | struct ofgroup **ofgroup) | |
5697 | { | |
5698 | enum ofperr error; | |
eaf004bd | 5699 | const long long int now = time_msec(); |
809c7548 RW |
5700 | |
5701 | if (gm->group_id > OFPG_MAX) { | |
5702 | return OFPERR_OFPGMFC_INVALID_GROUP; | |
5703 | } | |
5704 | if (gm->type > OFPGT11_FF) { | |
5705 | return OFPERR_OFPGMFC_BAD_TYPE; | |
5706 | } | |
5707 | ||
5708 | *ofgroup = ofproto->ofproto_class->group_alloc(); | |
5709 | if (!*ofgroup) { | |
5710 | VLOG_WARN_RL(&rl, "%s: failed to allocate group", ofproto->name); | |
5711 | return OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
5712 | } | |
5713 | ||
eaf004bd AZ |
5714 | (*ofgroup)->ofproto = ofproto; |
5715 | *CONST_CAST(uint32_t *, &((*ofgroup)->group_id)) = gm->group_id; | |
5716 | *CONST_CAST(enum ofp11_group_type *, &(*ofgroup)->type) = gm->type; | |
5717 | *CONST_CAST(long long int *, &((*ofgroup)->created)) = now; | |
5718 | *CONST_CAST(long long int *, &((*ofgroup)->modified)) = now; | |
809c7548 RW |
5719 | ovs_refcount_init(&(*ofgroup)->ref_count); |
5720 | ||
5721 | list_move(&(*ofgroup)->buckets, &gm->buckets); | |
eaf004bd AZ |
5722 | *CONST_CAST(uint32_t *, &(*ofgroup)->n_buckets) = |
5723 | list_size(&(*ofgroup)->buckets); | |
809c7548 RW |
5724 | |
5725 | /* Construct called BEFORE any locks are held. */ | |
5726 | error = ofproto->ofproto_class->group_construct(*ofgroup); | |
5727 | if (error) { | |
5728 | ofputil_bucket_list_destroy(&(*ofgroup)->buckets); | |
5729 | ofproto->ofproto_class->group_dealloc(*ofgroup); | |
5730 | } | |
5731 | return error; | |
5732 | } | |
5733 | ||
6c5b90ce BP |
5734 | /* Implements the OFPGC11_ADD operation specified by 'gm', adding a group to |
5735 | * 'ofproto''s group table. Returns 0 on success or an OpenFlow error code on | |
5736 | * failure. */ | |
7395c052 NZ |
5737 | static enum ofperr |
5738 | add_group(struct ofproto *ofproto, struct ofputil_group_mod *gm) | |
5739 | { | |
5740 | struct ofgroup *ofgroup; | |
5741 | enum ofperr error; | |
5742 | ||
7395c052 | 5743 | /* Allocate new group and initialize it. */ |
809c7548 | 5744 | error = init_group(ofproto, gm, &ofgroup); |
7395c052 | 5745 | if (error) { |
809c7548 | 5746 | return error; |
7395c052 NZ |
5747 | } |
5748 | ||
5749 | /* We wrlock as late as possible to minimize the time we jam any other | |
5750 | * threads: No visible state changes before acquiring the lock. */ | |
5751 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
5752 | ||
5753 | if (ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) { | |
5754 | error = OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
5755 | goto unlock_out; | |
5756 | } | |
5757 | ||
7e9f8266 | 5758 | if (ofproto_group_exists__(ofproto, gm->group_id)) { |
7395c052 NZ |
5759 | error = OFPERR_OFPGMFC_GROUP_EXISTS; |
5760 | goto unlock_out; | |
5761 | } | |
5762 | ||
5763 | if (!error) { | |
5764 | /* Insert new group. */ | |
5765 | hmap_insert(&ofproto->groups, &ofgroup->hmap_node, | |
5766 | hash_int(ofgroup->group_id, 0)); | |
5767 | ofproto->n_groups[ofgroup->type]++; | |
5768 | ||
5769 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5770 | return error; | |
5771 | } | |
5772 | ||
5773 | unlock_out: | |
5774 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5775 | ofproto->ofproto_class->group_destruct(ofgroup); | |
7395c052 NZ |
5776 | ofputil_bucket_list_destroy(&ofgroup->buckets); |
5777 | ofproto->ofproto_class->group_dealloc(ofgroup); | |
5778 | ||
5779 | return error; | |
5780 | } | |
5781 | ||
6c5b90ce BP |
5782 | /* Implements OFPGC11_MODIFY. Returns 0 on success or an OpenFlow error code |
5783 | * on failure. | |
7395c052 | 5784 | * |
809c7548 RW |
5785 | * Note that the group is re-created and then replaces the old group in |
5786 | * ofproto's ofgroup hash map. Thus, the group is never altered while users of | |
6c5b90ce | 5787 | * the xlate module hold a pointer to the group. */ |
7395c052 NZ |
5788 | static enum ofperr |
5789 | modify_group(struct ofproto *ofproto, struct ofputil_group_mod *gm) | |
5790 | { | |
809c7548 | 5791 | struct ofgroup *ofgroup, *new_ofgroup, *retiring; |
7395c052 NZ |
5792 | enum ofperr error; |
5793 | ||
809c7548 RW |
5794 | error = init_group(ofproto, gm, &new_ofgroup); |
5795 | if (error) { | |
5796 | return error; | |
7395c052 NZ |
5797 | } |
5798 | ||
809c7548 | 5799 | retiring = new_ofgroup; |
7395c052 | 5800 | |
3fc3b679 AZ |
5801 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); |
5802 | if (!ofproto_group_lookup__(ofproto, gm->group_id, &ofgroup)) { | |
7395c052 | 5803 | error = OFPERR_OFPGMFC_UNKNOWN_GROUP; |
809c7548 | 5804 | goto out; |
7395c052 | 5805 | } |
809c7548 RW |
5806 | |
5807 | /* Ofproto's group write lock is held now. */ | |
7395c052 NZ |
5808 | if (ofgroup->type != gm->type |
5809 | && ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) { | |
5810 | error = OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
809c7548 | 5811 | goto out; |
7395c052 NZ |
5812 | } |
5813 | ||
809c7548 | 5814 | /* The group creation time does not change during modification. */ |
eaf004bd AZ |
5815 | *CONST_CAST(long long int *, &(new_ofgroup->created)) = ofgroup->created; |
5816 | *CONST_CAST(long long int *, &(new_ofgroup->modified)) = time_msec(); | |
7395c052 | 5817 | |
809c7548 RW |
5818 | error = ofproto->ofproto_class->group_modify(new_ofgroup); |
5819 | if (error) { | |
5820 | goto out; | |
5821 | } | |
7395c052 | 5822 | |
809c7548 RW |
5823 | retiring = ofgroup; |
5824 | /* Replace ofgroup in ofproto's groups hash map with new_ofgroup. */ | |
5825 | hmap_remove(&ofproto->groups, &ofgroup->hmap_node); | |
5826 | hmap_insert(&ofproto->groups, &new_ofgroup->hmap_node, | |
5827 | hash_int(new_ofgroup->group_id, 0)); | |
5828 | if (ofgroup->type != new_ofgroup->type) { | |
5829 | ofproto->n_groups[ofgroup->type]--; | |
5830 | ofproto->n_groups[new_ofgroup->type]++; | |
7395c052 NZ |
5831 | } |
5832 | ||
809c7548 RW |
5833 | out: |
5834 | ofproto_group_unref(retiring); | |
7395c052 | 5835 | ovs_rwlock_unlock(&ofproto->groups_rwlock); |
7395c052 NZ |
5836 | return error; |
5837 | } | |
5838 | ||
5839 | static void | |
5840 | delete_group__(struct ofproto *ofproto, struct ofgroup *ofgroup) | |
5841 | OVS_RELEASES(ofproto->groups_rwlock) | |
5842 | { | |
276f6518 SH |
5843 | struct match match; |
5844 | struct ofputil_flow_mod fm; | |
5845 | ||
5846 | /* Delete all flow entries containing this group in a group action */ | |
5847 | match_init_catchall(&match); | |
5848 | flow_mod_init(&fm, &match, 0, NULL, 0, OFPFC_DELETE); | |
cc40d06b | 5849 | fm.delete_reason = OFPRR_GROUP_DELETE; |
276f6518 | 5850 | fm.out_group = ofgroup->group_id; |
baae3d02 | 5851 | handle_flow_mod__(ofproto, &fm, NULL); |
276f6518 | 5852 | |
7395c052 NZ |
5853 | hmap_remove(&ofproto->groups, &ofgroup->hmap_node); |
5854 | /* No-one can find this group any more. */ | |
5855 | ofproto->n_groups[ofgroup->type]--; | |
5856 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
809c7548 | 5857 | ofproto_group_unref(ofgroup); |
7395c052 NZ |
5858 | } |
5859 | ||
6c5b90ce | 5860 | /* Implements OFPGC11_DELETE. */ |
7395c052 NZ |
5861 | static void |
5862 | delete_group(struct ofproto *ofproto, uint32_t group_id) | |
5863 | { | |
5864 | struct ofgroup *ofgroup; | |
5865 | ||
5866 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
5867 | if (group_id == OFPG_ALL) { | |
5868 | for (;;) { | |
5869 | struct hmap_node *node = hmap_first(&ofproto->groups); | |
5870 | if (!node) { | |
5871 | break; | |
5872 | } | |
5873 | ofgroup = CONTAINER_OF(node, struct ofgroup, hmap_node); | |
5874 | delete_group__(ofproto, ofgroup); | |
5875 | /* Lock for each node separately, so that we will not jam the | |
5876 | * other threads for too long time. */ | |
5877 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
5878 | } | |
5879 | } else { | |
5880 | HMAP_FOR_EACH_IN_BUCKET (ofgroup, hmap_node, | |
5881 | hash_int(group_id, 0), &ofproto->groups) { | |
5882 | if (ofgroup->group_id == group_id) { | |
5883 | delete_group__(ofproto, ofgroup); | |
5884 | return; | |
5885 | } | |
5886 | } | |
5887 | } | |
5888 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5889 | } | |
5890 | ||
5891 | static enum ofperr | |
5892 | handle_group_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
5893 | { | |
5894 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5895 | struct ofputil_group_mod gm; | |
5896 | enum ofperr error; | |
5897 | ||
5898 | error = reject_slave_controller(ofconn); | |
5899 | if (error) { | |
5900 | return error; | |
5901 | } | |
5902 | ||
5903 | error = ofputil_decode_group_mod(oh, &gm); | |
5904 | if (error) { | |
5905 | return error; | |
5906 | } | |
5907 | ||
5908 | switch (gm.command) { | |
5909 | case OFPGC11_ADD: | |
5910 | return add_group(ofproto, &gm); | |
5911 | ||
5912 | case OFPGC11_MODIFY: | |
5913 | return modify_group(ofproto, &gm); | |
5914 | ||
5915 | case OFPGC11_DELETE: | |
5916 | delete_group(ofproto, gm.group_id); | |
5917 | return 0; | |
5918 | ||
5919 | default: | |
5920 | if (gm.command > OFPGC11_DELETE) { | |
5921 | VLOG_WARN_RL(&rl, "%s: Invalid group_mod command type %d", | |
5922 | ofproto->name, gm.command); | |
5923 | } | |
5924 | return OFPERR_OFPGMFC_BAD_COMMAND; | |
5925 | } | |
5926 | } | |
5927 | ||
3c1bb396 BP |
5928 | enum ofputil_table_miss |
5929 | ofproto_table_get_miss_config(const struct ofproto *ofproto, uint8_t table_id) | |
6d328fa2 | 5930 | { |
3c1bb396 | 5931 | enum ofputil_table_miss value; |
afcea9ea JR |
5932 | |
5933 | atomic_read_relaxed(&ofproto->tables[table_id].miss_config, &value); | |
3c1bb396 | 5934 | return value; |
6d328fa2 SH |
5935 | } |
5936 | ||
67761761 SH |
5937 | static enum ofperr |
5938 | table_mod(struct ofproto *ofproto, const struct ofputil_table_mod *tm) | |
5939 | { | |
3c1bb396 | 5940 | if (!check_table_id(ofproto, tm->table_id)) { |
67761761 | 5941 | return OFPERR_OFPTMFC_BAD_TABLE; |
3c1bb396 BP |
5942 | } else if (tm->miss_config != OFPUTIL_TABLE_MISS_DEFAULT) { |
5943 | if (tm->table_id == OFPTT_ALL) { | |
5944 | int i; | |
5945 | for (i = 0; i < ofproto->n_tables; i++) { | |
afcea9ea JR |
5946 | atomic_store_relaxed(&ofproto->tables[i].miss_config, |
5947 | tm->miss_config); | |
3c1bb396 BP |
5948 | } |
5949 | } else { | |
afcea9ea JR |
5950 | atomic_store_relaxed(&ofproto->tables[tm->table_id].miss_config, |
5951 | tm->miss_config); | |
3c1bb396 | 5952 | } |
67761761 | 5953 | } |
67761761 SH |
5954 | return 0; |
5955 | } | |
5956 | ||
918f2b82 AZ |
5957 | static enum ofperr |
5958 | handle_table_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
5959 | { | |
67761761 | 5960 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
918f2b82 AZ |
5961 | struct ofputil_table_mod tm; |
5962 | enum ofperr error; | |
5963 | ||
5964 | error = reject_slave_controller(ofconn); | |
5965 | if (error) { | |
5966 | return error; | |
5967 | } | |
5968 | ||
5969 | error = ofputil_decode_table_mod(oh, &tm); | |
5970 | if (error) { | |
5971 | return error; | |
5972 | } | |
5973 | ||
67761761 | 5974 | return table_mod(ofproto, &tm); |
918f2b82 AZ |
5975 | } |
5976 | ||
777af88d AC |
5977 | static enum ofperr |
5978 | handle_bundle_control(struct ofconn *ofconn, const struct ofp_header *oh) | |
5979 | { | |
5980 | enum ofperr error; | |
5981 | struct ofputil_bundle_ctrl_msg bctrl; | |
5982 | struct ofpbuf *buf; | |
5983 | struct ofputil_bundle_ctrl_msg reply; | |
5984 | ||
5985 | error = ofputil_decode_bundle_ctrl(oh, &bctrl); | |
5986 | if (error) { | |
5987 | return error; | |
5988 | } | |
5989 | reply.flags = 0; | |
5990 | reply.bundle_id = bctrl.bundle_id; | |
5991 | ||
5992 | switch (bctrl.type) { | |
5993 | case OFPBCT_OPEN_REQUEST: | |
5994 | error = ofp_bundle_open(ofconn, bctrl.bundle_id, bctrl.flags); | |
5995 | reply.type = OFPBCT_OPEN_REPLY; | |
5996 | break; | |
5997 | case OFPBCT_CLOSE_REQUEST: | |
5998 | error = ofp_bundle_close(ofconn, bctrl.bundle_id, bctrl.flags); | |
5999 | reply.type = OFPBCT_CLOSE_REPLY;; | |
6000 | break; | |
6001 | case OFPBCT_COMMIT_REQUEST: | |
6002 | error = ofp_bundle_commit(ofconn, bctrl.bundle_id, bctrl.flags); | |
6003 | reply.type = OFPBCT_COMMIT_REPLY; | |
6004 | break; | |
6005 | case OFPBCT_DISCARD_REQUEST: | |
6006 | error = ofp_bundle_discard(ofconn, bctrl.bundle_id); | |
6007 | reply.type = OFPBCT_DISCARD_REPLY; | |
6008 | break; | |
6009 | ||
6010 | case OFPBCT_OPEN_REPLY: | |
6011 | case OFPBCT_CLOSE_REPLY: | |
6012 | case OFPBCT_COMMIT_REPLY: | |
6013 | case OFPBCT_DISCARD_REPLY: | |
6014 | return OFPERR_OFPBFC_BAD_TYPE; | |
6015 | break; | |
6016 | } | |
6017 | ||
6018 | if (!error) { | |
6019 | buf = ofputil_encode_bundle_ctrl_reply(oh, &reply); | |
6020 | ofconn_send_reply(ofconn, buf); | |
6021 | } | |
6022 | return error; | |
6023 | } | |
6024 | ||
6025 | ||
6026 | static enum ofperr | |
6027 | handle_bundle_add(struct ofconn *ofconn, const struct ofp_header *oh) | |
6028 | { | |
6029 | enum ofperr error; | |
6030 | struct ofputil_bundle_add_msg badd; | |
6031 | ||
6032 | error = ofputil_decode_bundle_add(oh, &badd); | |
6033 | if (error) { | |
6034 | return error; | |
6035 | } | |
6036 | ||
6037 | return ofp_bundle_add_message(ofconn, &badd); | |
6038 | } | |
6039 | ||
90bf1e07 | 6040 | static enum ofperr |
d1e2cf21 | 6041 | handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg) |
15aaf599 | 6042 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 6043 | { |
1f317cb5 | 6044 | const struct ofp_header *oh = ofpbuf_data(msg); |
982697a4 | 6045 | enum ofptype type; |
90bf1e07 | 6046 | enum ofperr error; |
064af421 | 6047 | |
982697a4 | 6048 | error = ofptype_decode(&type, oh); |
d1e2cf21 BP |
6049 | if (error) { |
6050 | return error; | |
6051 | } | |
ff3c2c63 YT |
6052 | if (oh->version >= OFP13_VERSION && ofpmsg_is_stat_request(oh) |
6053 | && ofpmp_more(oh)) { | |
6054 | /* We have no buffer implementation for multipart requests. | |
6055 | * Report overflow for requests which consists of multiple | |
6056 | * messages. */ | |
6057 | return OFPERR_OFPBRC_MULTIPART_BUFFER_OVERFLOW; | |
6058 | } | |
064af421 | 6059 | |
982697a4 | 6060 | switch (type) { |
d1e2cf21 | 6061 | /* OpenFlow requests. */ |
982697a4 | 6062 | case OFPTYPE_ECHO_REQUEST: |
d1e2cf21 | 6063 | return handle_echo_request(ofconn, oh); |
064af421 | 6064 | |
982697a4 | 6065 | case OFPTYPE_FEATURES_REQUEST: |
d1e2cf21 | 6066 | return handle_features_request(ofconn, oh); |
064af421 | 6067 | |
982697a4 | 6068 | case OFPTYPE_GET_CONFIG_REQUEST: |
d1e2cf21 | 6069 | return handle_get_config_request(ofconn, oh); |
064af421 | 6070 | |
982697a4 BP |
6071 | case OFPTYPE_SET_CONFIG: |
6072 | return handle_set_config(ofconn, oh); | |
064af421 | 6073 | |
982697a4 BP |
6074 | case OFPTYPE_PACKET_OUT: |
6075 | return handle_packet_out(ofconn, oh); | |
064af421 | 6076 | |
982697a4 | 6077 | case OFPTYPE_PORT_MOD: |
d1e2cf21 | 6078 | return handle_port_mod(ofconn, oh); |
064af421 | 6079 | |
982697a4 | 6080 | case OFPTYPE_FLOW_MOD: |
2e4f5fcf | 6081 | return handle_flow_mod(ofconn, oh); |
064af421 | 6082 | |
7395c052 NZ |
6083 | case OFPTYPE_GROUP_MOD: |
6084 | return handle_group_mod(ofconn, oh); | |
6085 | ||
918f2b82 AZ |
6086 | case OFPTYPE_TABLE_MOD: |
6087 | return handle_table_mod(ofconn, oh); | |
6088 | ||
9cae45dc JR |
6089 | case OFPTYPE_METER_MOD: |
6090 | return handle_meter_mod(ofconn, oh); | |
6091 | ||
982697a4 | 6092 | case OFPTYPE_BARRIER_REQUEST: |
d1e2cf21 | 6093 | return handle_barrier_request(ofconn, oh); |
064af421 | 6094 | |
6ea4776b JR |
6095 | case OFPTYPE_ROLE_REQUEST: |
6096 | return handle_role_request(ofconn, oh); | |
6097 | ||
d1e2cf21 | 6098 | /* OpenFlow replies. */ |
982697a4 | 6099 | case OFPTYPE_ECHO_REPLY: |
d1e2cf21 | 6100 | return 0; |
246e61ea | 6101 | |
d1e2cf21 | 6102 | /* Nicira extension requests. */ |
982697a4 | 6103 | case OFPTYPE_FLOW_MOD_TABLE_ID: |
6c1491fb | 6104 | return handle_nxt_flow_mod_table_id(ofconn, oh); |
d1e2cf21 | 6105 | |
982697a4 | 6106 | case OFPTYPE_SET_FLOW_FORMAT: |
d1e2cf21 BP |
6107 | return handle_nxt_set_flow_format(ofconn, oh); |
6108 | ||
982697a4 | 6109 | case OFPTYPE_SET_PACKET_IN_FORMAT: |
54834960 EJ |
6110 | return handle_nxt_set_packet_in_format(ofconn, oh); |
6111 | ||
982697a4 | 6112 | case OFPTYPE_SET_CONTROLLER_ID: |
a7349929 BP |
6113 | return handle_nxt_set_controller_id(ofconn, oh); |
6114 | ||
982697a4 | 6115 | case OFPTYPE_FLOW_AGE: |
f27f2134 BP |
6116 | /* Nothing to do. */ |
6117 | return 0; | |
6118 | ||
982697a4 | 6119 | case OFPTYPE_FLOW_MONITOR_CANCEL: |
2b07c8b1 BP |
6120 | return handle_flow_monitor_cancel(ofconn, oh); |
6121 | ||
982697a4 | 6122 | case OFPTYPE_SET_ASYNC_CONFIG: |
80d5aefd BP |
6123 | return handle_nxt_set_async_config(ofconn, oh); |
6124 | ||
c423b3b3 AC |
6125 | case OFPTYPE_GET_ASYNC_REQUEST: |
6126 | return handle_nxt_get_async_request(ofconn, oh); | |
6127 | ||
349adfb2 | 6128 | /* Statistics requests. */ |
982697a4 BP |
6129 | case OFPTYPE_DESC_STATS_REQUEST: |
6130 | return handle_desc_stats_request(ofconn, oh); | |
6131 | ||
6132 | case OFPTYPE_FLOW_STATS_REQUEST: | |
6133 | return handle_flow_stats_request(ofconn, oh); | |
6134 | ||
6135 | case OFPTYPE_AGGREGATE_STATS_REQUEST: | |
6136 | return handle_aggregate_stats_request(ofconn, oh); | |
6137 | ||
6138 | case OFPTYPE_TABLE_STATS_REQUEST: | |
6139 | return handle_table_stats_request(ofconn, oh); | |
6140 | ||
3c4e10fb BP |
6141 | case OFPTYPE_TABLE_FEATURES_STATS_REQUEST: |
6142 | return handle_table_features_request(ofconn, oh); | |
6143 | ||
982697a4 BP |
6144 | case OFPTYPE_PORT_STATS_REQUEST: |
6145 | return handle_port_stats_request(ofconn, oh); | |
6146 | ||
6147 | case OFPTYPE_QUEUE_STATS_REQUEST: | |
6148 | return handle_queue_stats_request(ofconn, oh); | |
6149 | ||
6150 | case OFPTYPE_PORT_DESC_STATS_REQUEST: | |
6151 | return handle_port_desc_stats_request(ofconn, oh); | |
6152 | ||
6153 | case OFPTYPE_FLOW_MONITOR_STATS_REQUEST: | |
6154 | return handle_flow_monitor_request(ofconn, oh); | |
6155 | ||
261bd854 BP |
6156 | case OFPTYPE_METER_STATS_REQUEST: |
6157 | case OFPTYPE_METER_CONFIG_STATS_REQUEST: | |
9cae45dc JR |
6158 | return handle_meter_request(ofconn, oh, type); |
6159 | ||
261bd854 | 6160 | case OFPTYPE_METER_FEATURES_STATS_REQUEST: |
9cae45dc JR |
6161 | return handle_meter_features_request(ofconn, oh); |
6162 | ||
261bd854 | 6163 | case OFPTYPE_GROUP_STATS_REQUEST: |
7395c052 NZ |
6164 | return handle_group_stats_request(ofconn, oh); |
6165 | ||
261bd854 | 6166 | case OFPTYPE_GROUP_DESC_STATS_REQUEST: |
7395c052 NZ |
6167 | return handle_group_desc_stats_request(ofconn, oh); |
6168 | ||
261bd854 | 6169 | case OFPTYPE_GROUP_FEATURES_STATS_REQUEST: |
7395c052 NZ |
6170 | return handle_group_features_stats_request(ofconn, oh); |
6171 | ||
7395c052 | 6172 | case OFPTYPE_QUEUE_GET_CONFIG_REQUEST: |
e8f9a7bb | 6173 | return handle_queue_get_config_request(ofconn, oh); |
2e1ae200 | 6174 | |
777af88d AC |
6175 | case OFPTYPE_BUNDLE_CONTROL: |
6176 | return handle_bundle_control(ofconn, oh); | |
6177 | ||
6178 | case OFPTYPE_BUNDLE_ADD_MESSAGE: | |
6179 | return handle_bundle_add(ofconn, oh); | |
6180 | ||
982697a4 BP |
6181 | case OFPTYPE_HELLO: |
6182 | case OFPTYPE_ERROR: | |
6183 | case OFPTYPE_FEATURES_REPLY: | |
6184 | case OFPTYPE_GET_CONFIG_REPLY: | |
6185 | case OFPTYPE_PACKET_IN: | |
6186 | case OFPTYPE_FLOW_REMOVED: | |
6187 | case OFPTYPE_PORT_STATUS: | |
6188 | case OFPTYPE_BARRIER_REPLY: | |
c545d38d | 6189 | case OFPTYPE_QUEUE_GET_CONFIG_REPLY: |
982697a4 BP |
6190 | case OFPTYPE_DESC_STATS_REPLY: |
6191 | case OFPTYPE_FLOW_STATS_REPLY: | |
6192 | case OFPTYPE_QUEUE_STATS_REPLY: | |
6193 | case OFPTYPE_PORT_STATS_REPLY: | |
6194 | case OFPTYPE_TABLE_STATS_REPLY: | |
6195 | case OFPTYPE_AGGREGATE_STATS_REPLY: | |
6196 | case OFPTYPE_PORT_DESC_STATS_REPLY: | |
6197 | case OFPTYPE_ROLE_REPLY: | |
6198 | case OFPTYPE_FLOW_MONITOR_PAUSED: | |
6199 | case OFPTYPE_FLOW_MONITOR_RESUMED: | |
6200 | case OFPTYPE_FLOW_MONITOR_STATS_REPLY: | |
2e1ae200 | 6201 | case OFPTYPE_GET_ASYNC_REPLY: |
261bd854 BP |
6202 | case OFPTYPE_GROUP_STATS_REPLY: |
6203 | case OFPTYPE_GROUP_DESC_STATS_REPLY: | |
6204 | case OFPTYPE_GROUP_FEATURES_STATS_REPLY: | |
6205 | case OFPTYPE_METER_STATS_REPLY: | |
6206 | case OFPTYPE_METER_CONFIG_STATS_REPLY: | |
6207 | case OFPTYPE_METER_FEATURES_STATS_REPLY: | |
6208 | case OFPTYPE_TABLE_FEATURES_STATS_REPLY: | |
252f3411 | 6209 | case OFPTYPE_ROLE_STATUS: |
064af421 | 6210 | default: |
76ec08e0 YT |
6211 | if (ofpmsg_is_stat_request(oh)) { |
6212 | return OFPERR_OFPBRC_BAD_STAT; | |
6213 | } else { | |
6214 | return OFPERR_OFPBRC_BAD_TYPE; | |
6215 | } | |
064af421 | 6216 | } |
d1e2cf21 | 6217 | } |
064af421 | 6218 | |
b20f4073 | 6219 | static void |
e03248b7 | 6220 | handle_openflow(struct ofconn *ofconn, const struct ofpbuf *ofp_msg) |
15aaf599 | 6221 | OVS_EXCLUDED(ofproto_mutex) |
d1e2cf21 BP |
6222 | { |
6223 | int error = handle_openflow__(ofconn, ofp_msg); | |
b20f4073 | 6224 | if (error) { |
1f317cb5 | 6225 | ofconn_send_error(ofconn, ofpbuf_data(ofp_msg), error); |
064af421 | 6226 | } |
d1e2cf21 | 6227 | COVERAGE_INC(ofproto_recv_openflow); |
7ee20df1 BP |
6228 | } |
6229 | \f | |
6230 | /* Asynchronous operations. */ | |
6231 | ||
834fe5cb BP |
6232 | static enum ofperr |
6233 | send_buffered_packet(struct ofconn *ofconn, uint32_t buffer_id, | |
6234 | struct rule *rule) | |
15aaf599 | 6235 | OVS_REQUIRES(ofproto_mutex) |
7ee20df1 | 6236 | { |
834fe5cb BP |
6237 | enum ofperr error = 0; |
6238 | if (ofconn && buffer_id != UINT32_MAX) { | |
6239 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
6240 | struct ofpbuf *packet; | |
6241 | ofp_port_t in_port; | |
b277c7cc | 6242 | |
834fe5cb BP |
6243 | error = ofconn_pktbuf_retrieve(ofconn, buffer_id, &packet, &in_port); |
6244 | if (packet) { | |
6245 | struct rule_execute *re; | |
b277c7cc | 6246 | |
834fe5cb | 6247 | ofproto_rule_ref(rule); |
b277c7cc | 6248 | |
834fe5cb BP |
6249 | re = xmalloc(sizeof *re); |
6250 | re->rule = rule; | |
6251 | re->in_port = in_port; | |
6252 | re->packet = packet; | |
b277c7cc | 6253 | |
834fe5cb BP |
6254 | if (!guarded_list_push_back(&ofproto->rule_executes, |
6255 | &re->list_node, 1024)) { | |
a2143702 | 6256 | ofproto_rule_unref(rule); |
834fe5cb BP |
6257 | ofpbuf_delete(re->packet); |
6258 | free(re); | |
e615b0a3 | 6259 | } |
af822017 | 6260 | } |
7ee20df1 | 6261 | } |
834fe5cb | 6262 | return error; |
7ee20df1 | 6263 | } |
064af421 | 6264 | \f |
064af421 | 6265 | static uint64_t |
fa60c019 | 6266 | pick_datapath_id(const struct ofproto *ofproto) |
064af421 | 6267 | { |
fa60c019 | 6268 | const struct ofport *port; |
064af421 | 6269 | |
abe529af | 6270 | port = ofproto_get_port(ofproto, OFPP_LOCAL); |
fa60c019 BP |
6271 | if (port) { |
6272 | uint8_t ea[ETH_ADDR_LEN]; | |
6273 | int error; | |
6274 | ||
6275 | error = netdev_get_etheraddr(port->netdev, ea); | |
064af421 BP |
6276 | if (!error) { |
6277 | return eth_addr_to_uint64(ea); | |
6278 | } | |
fbfa2911 BP |
6279 | VLOG_WARN("%s: could not get MAC address for %s (%s)", |
6280 | ofproto->name, netdev_get_name(port->netdev), | |
10a89ef0 | 6281 | ovs_strerror(error)); |
064af421 | 6282 | } |
fa60c019 | 6283 | return ofproto->fallback_dpid; |
064af421 BP |
6284 | } |
6285 | ||
6286 | static uint64_t | |
6287 | pick_fallback_dpid(void) | |
6288 | { | |
6289 | uint8_t ea[ETH_ADDR_LEN]; | |
70150daf | 6290 | eth_addr_nicira_random(ea); |
064af421 BP |
6291 | return eth_addr_to_uint64(ea); |
6292 | } | |
6293 | \f | |
254750ce BP |
6294 | /* Table overflow policy. */ |
6295 | ||
ad3efdcb EJ |
6296 | /* Chooses and updates 'rulep' with a rule to evict from 'table'. Sets 'rulep' |
6297 | * to NULL if the table is not configured to evict rules or if the table | |
6298 | * contains no evictable rules. (Rules with a readlock on their evict rwlock, | |
6299 | * or with no timeouts are not evictable.) */ | |
6300 | static bool | |
6301 | choose_rule_to_evict(struct oftable *table, struct rule **rulep) | |
15aaf599 | 6302 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6303 | { |
6304 | struct eviction_group *evg; | |
6305 | ||
ad3efdcb | 6306 | *rulep = NULL; |
254750ce | 6307 | if (!table->eviction_fields) { |
ad3efdcb | 6308 | return false; |
254750ce BP |
6309 | } |
6310 | ||
6311 | /* In the common case, the outer and inner loops here will each be entered | |
6312 | * exactly once: | |
6313 | * | |
6314 | * - The inner loop normally "return"s in its first iteration. If the | |
6315 | * eviction group has any evictable rules, then it always returns in | |
6316 | * some iteration. | |
6317 | * | |
6318 | * - The outer loop only iterates more than once if the largest eviction | |
6319 | * group has no evictable rules. | |
6320 | * | |
6321 | * - The outer loop can exit only if table's 'max_flows' is all filled up | |
afe2143d | 6322 | * by unevictable rules. */ |
254750ce BP |
6323 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { |
6324 | struct rule *rule; | |
6325 | ||
6326 | HEAP_FOR_EACH (rule, evg_node, &evg->rules) { | |
15aaf599 BP |
6327 | *rulep = rule; |
6328 | return true; | |
254750ce BP |
6329 | } |
6330 | } | |
6331 | ||
ad3efdcb | 6332 | return false; |
254750ce | 6333 | } |
254750ce BP |
6334 | \f |
6335 | /* Eviction groups. */ | |
6336 | ||
6337 | /* Returns the priority to use for an eviction_group that contains 'n_rules' | |
6338 | * rules. The priority contains low-order random bits to ensure that eviction | |
6339 | * groups with the same number of rules are prioritized randomly. */ | |
6340 | static uint32_t | |
6341 | eviction_group_priority(size_t n_rules) | |
6342 | { | |
6343 | uint16_t size = MIN(UINT16_MAX, n_rules); | |
6344 | return (size << 16) | random_uint16(); | |
6345 | } | |
6346 | ||
6347 | /* Updates 'evg', an eviction_group within 'table', following a change that | |
6348 | * adds or removes rules in 'evg'. */ | |
6349 | static void | |
6350 | eviction_group_resized(struct oftable *table, struct eviction_group *evg) | |
15aaf599 | 6351 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6352 | { |
6353 | heap_change(&table->eviction_groups_by_size, &evg->size_node, | |
6354 | eviction_group_priority(heap_count(&evg->rules))); | |
6355 | } | |
6356 | ||
6357 | /* Destroys 'evg', an eviction_group within 'table': | |
6358 | * | |
6359 | * - Removes all the rules, if any, from 'evg'. (It doesn't destroy the | |
6360 | * rules themselves, just removes them from the eviction group.) | |
6361 | * | |
6362 | * - Removes 'evg' from 'table'. | |
6363 | * | |
6364 | * - Frees 'evg'. */ | |
6365 | static void | |
6366 | eviction_group_destroy(struct oftable *table, struct eviction_group *evg) | |
15aaf599 | 6367 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6368 | { |
6369 | while (!heap_is_empty(&evg->rules)) { | |
6370 | struct rule *rule; | |
6371 | ||
6372 | rule = CONTAINER_OF(heap_pop(&evg->rules), struct rule, evg_node); | |
6373 | rule->eviction_group = NULL; | |
6374 | } | |
6375 | hmap_remove(&table->eviction_groups_by_id, &evg->id_node); | |
6376 | heap_remove(&table->eviction_groups_by_size, &evg->size_node); | |
6377 | heap_destroy(&evg->rules); | |
6378 | free(evg); | |
6379 | } | |
6380 | ||
6381 | /* Removes 'rule' from its eviction group, if any. */ | |
6382 | static void | |
6383 | eviction_group_remove_rule(struct rule *rule) | |
15aaf599 | 6384 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6385 | { |
6386 | if (rule->eviction_group) { | |
6387 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
6388 | struct eviction_group *evg = rule->eviction_group; | |
6389 | ||
6390 | rule->eviction_group = NULL; | |
6391 | heap_remove(&evg->rules, &rule->evg_node); | |
6392 | if (heap_is_empty(&evg->rules)) { | |
6393 | eviction_group_destroy(table, evg); | |
6394 | } else { | |
6395 | eviction_group_resized(table, evg); | |
6396 | } | |
6397 | } | |
6398 | } | |
6399 | ||
6400 | /* Hashes the 'rule''s values for the eviction_fields of 'rule''s table, and | |
6401 | * returns the hash value. */ | |
6402 | static uint32_t | |
6403 | eviction_group_hash_rule(struct rule *rule) | |
15aaf599 | 6404 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6405 | { |
6406 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
6407 | const struct mf_subfield *sf; | |
5cb7a798 | 6408 | struct flow flow; |
254750ce BP |
6409 | uint32_t hash; |
6410 | ||
6411 | hash = table->eviction_group_id_basis; | |
5cb7a798 | 6412 | miniflow_expand(&rule->cr.match.flow, &flow); |
254750ce BP |
6413 | for (sf = table->eviction_fields; |
6414 | sf < &table->eviction_fields[table->n_eviction_fields]; | |
6415 | sf++) | |
6416 | { | |
5cb7a798 | 6417 | if (mf_are_prereqs_ok(sf->field, &flow)) { |
254750ce BP |
6418 | union mf_value value; |
6419 | ||
5cb7a798 | 6420 | mf_get_value(sf->field, &flow, &value); |
254750ce BP |
6421 | if (sf->ofs) { |
6422 | bitwise_zero(&value, sf->field->n_bytes, 0, sf->ofs); | |
6423 | } | |
6424 | if (sf->ofs + sf->n_bits < sf->field->n_bytes * 8) { | |
6425 | unsigned int start = sf->ofs + sf->n_bits; | |
6426 | bitwise_zero(&value, sf->field->n_bytes, start, | |
6427 | sf->field->n_bytes * 8 - start); | |
6428 | } | |
6429 | hash = hash_bytes(&value, sf->field->n_bytes, hash); | |
6430 | } else { | |
6431 | hash = hash_int(hash, 0); | |
6432 | } | |
6433 | } | |
6434 | ||
6435 | return hash; | |
6436 | } | |
6437 | ||
6438 | /* Returns an eviction group within 'table' with the given 'id', creating one | |
6439 | * if necessary. */ | |
6440 | static struct eviction_group * | |
6441 | eviction_group_find(struct oftable *table, uint32_t id) | |
15aaf599 | 6442 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6443 | { |
6444 | struct eviction_group *evg; | |
6445 | ||
6446 | HMAP_FOR_EACH_WITH_HASH (evg, id_node, id, &table->eviction_groups_by_id) { | |
6447 | return evg; | |
6448 | } | |
6449 | ||
6450 | evg = xmalloc(sizeof *evg); | |
6451 | hmap_insert(&table->eviction_groups_by_id, &evg->id_node, id); | |
6452 | heap_insert(&table->eviction_groups_by_size, &evg->size_node, | |
6453 | eviction_group_priority(0)); | |
6454 | heap_init(&evg->rules); | |
6455 | ||
6456 | return evg; | |
6457 | } | |
6458 | ||
6459 | /* Returns an eviction priority for 'rule'. The return value should be | |
6460 | * interpreted so that higher priorities make a rule more attractive candidates | |
dc437090 JR |
6461 | * for eviction. |
6462 | * Called only if have a timeout. */ | |
254750ce | 6463 | static uint32_t |
dc437090 | 6464 | rule_eviction_priority(struct ofproto *ofproto, struct rule *rule) |
15aaf599 | 6465 | OVS_REQUIRES(ofproto_mutex) |
254750ce | 6466 | { |
dc437090 JR |
6467 | long long int expiration = LLONG_MAX; |
6468 | long long int modified; | |
254750ce BP |
6469 | uint32_t expiration_offset; |
6470 | ||
dc437090 | 6471 | /* 'modified' needs protection even when we hold 'ofproto_mutex'. */ |
d10976b7 | 6472 | ovs_mutex_lock(&rule->mutex); |
dc437090 | 6473 | modified = rule->modified; |
d10976b7 | 6474 | ovs_mutex_unlock(&rule->mutex); |
dc437090 JR |
6475 | |
6476 | if (rule->hard_timeout) { | |
6477 | expiration = modified + rule->hard_timeout * 1000; | |
6478 | } | |
6479 | if (rule->idle_timeout) { | |
6480 | uint64_t packets, bytes; | |
6481 | long long int used; | |
6482 | long long int idle_expiration; | |
6483 | ||
6484 | ofproto->ofproto_class->rule_get_stats(rule, &packets, &bytes, &used); | |
6485 | idle_expiration = used + rule->idle_timeout * 1000; | |
6486 | expiration = MIN(expiration, idle_expiration); | |
6487 | } | |
6488 | ||
254750ce BP |
6489 | if (expiration == LLONG_MAX) { |
6490 | return 0; | |
6491 | } | |
6492 | ||
6493 | /* Calculate the time of expiration as a number of (approximate) seconds | |
6494 | * after program startup. | |
6495 | * | |
6496 | * This should work OK for program runs that last UINT32_MAX seconds or | |
6497 | * less. Therefore, please restart OVS at least once every 136 years. */ | |
6498 | expiration_offset = (expiration >> 10) - (time_boot_msec() >> 10); | |
6499 | ||
6500 | /* Invert the expiration offset because we're using a max-heap. */ | |
6501 | return UINT32_MAX - expiration_offset; | |
6502 | } | |
6503 | ||
6504 | /* Adds 'rule' to an appropriate eviction group for its oftable's | |
6505 | * configuration. Does nothing if 'rule''s oftable doesn't have eviction | |
6506 | * enabled, or if 'rule' is a permanent rule (one that will never expire on its | |
6507 | * own). | |
6508 | * | |
6509 | * The caller must ensure that 'rule' is not already in an eviction group. */ | |
6510 | static void | |
6511 | eviction_group_add_rule(struct rule *rule) | |
15aaf599 | 6512 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6513 | { |
6514 | struct ofproto *ofproto = rule->ofproto; | |
6515 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
a3779dbc | 6516 | bool has_timeout; |
254750ce | 6517 | |
dc437090 JR |
6518 | /* Timeouts may be modified only when holding 'ofproto_mutex'. We have it |
6519 | * so no additional protection is needed. */ | |
a3779dbc | 6520 | has_timeout = rule->hard_timeout || rule->idle_timeout; |
a3779dbc EJ |
6521 | |
6522 | if (table->eviction_fields && has_timeout) { | |
254750ce BP |
6523 | struct eviction_group *evg; |
6524 | ||
6525 | evg = eviction_group_find(table, eviction_group_hash_rule(rule)); | |
6526 | ||
6527 | rule->eviction_group = evg; | |
6528 | heap_insert(&evg->rules, &rule->evg_node, | |
dc437090 | 6529 | rule_eviction_priority(ofproto, rule)); |
254750ce BP |
6530 | eviction_group_resized(table, evg); |
6531 | } | |
6532 | } | |
6533 | \f | |
d0918789 BP |
6534 | /* oftables. */ |
6535 | ||
6536 | /* Initializes 'table'. */ | |
6537 | static void | |
6538 | oftable_init(struct oftable *table) | |
6539 | { | |
5c67e4af | 6540 | memset(table, 0, sizeof *table); |
476f36e8 | 6541 | classifier_init(&table->cls, flow_segment_u32s); |
ec1c5c7e | 6542 | table->max_flows = UINT_MAX; |
3c1bb396 | 6543 | atomic_init(&table->miss_config, OFPUTIL_TABLE_MISS_DEFAULT); |
f017d986 | 6544 | |
f017d986 JR |
6545 | classifier_set_prefix_fields(&table->cls, default_prefix_fields, |
6546 | ARRAY_SIZE(default_prefix_fields)); | |
d611866c SH |
6547 | |
6548 | atomic_init(&table->n_matched, 0); | |
6549 | atomic_init(&table->n_missed, 0); | |
d0918789 BP |
6550 | } |
6551 | ||
254750ce | 6552 | /* Destroys 'table', including its classifier and eviction groups. |
d0918789 BP |
6553 | * |
6554 | * The caller is responsible for freeing 'table' itself. */ | |
6555 | static void | |
6556 | oftable_destroy(struct oftable *table) | |
6557 | { | |
cb22974d | 6558 | ovs_assert(classifier_is_empty(&table->cls)); |
254750ce | 6559 | oftable_disable_eviction(table); |
d0918789 | 6560 | classifier_destroy(&table->cls); |
254750ce BP |
6561 | free(table->name); |
6562 | } | |
6563 | ||
6564 | /* Changes the name of 'table' to 'name'. If 'name' is NULL or the empty | |
6565 | * string, then 'table' will use its default name. | |
6566 | * | |
6567 | * This only affects the name exposed for a table exposed through the OpenFlow | |
6568 | * OFPST_TABLE (as printed by "ovs-ofctl dump-tables"). */ | |
6569 | static void | |
6570 | oftable_set_name(struct oftable *table, const char *name) | |
6571 | { | |
6572 | if (name && name[0]) { | |
6573 | int len = strnlen(name, OFP_MAX_TABLE_NAME_LEN); | |
6574 | if (!table->name || strncmp(name, table->name, len)) { | |
6575 | free(table->name); | |
6576 | table->name = xmemdup0(name, len); | |
6577 | } | |
6578 | } else { | |
6579 | free(table->name); | |
6580 | table->name = NULL; | |
6581 | } | |
6582 | } | |
6583 | ||
6584 | /* oftables support a choice of two policies when adding a rule would cause the | |
6585 | * number of flows in the table to exceed the configured maximum number: either | |
6586 | * they can refuse to add the new flow or they can evict some existing flow. | |
6587 | * This function configures the former policy on 'table'. */ | |
6588 | static void | |
6589 | oftable_disable_eviction(struct oftable *table) | |
15aaf599 | 6590 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6591 | { |
6592 | if (table->eviction_fields) { | |
6593 | struct eviction_group *evg, *next; | |
6594 | ||
6595 | HMAP_FOR_EACH_SAFE (evg, next, id_node, | |
6596 | &table->eviction_groups_by_id) { | |
6597 | eviction_group_destroy(table, evg); | |
6598 | } | |
6599 | hmap_destroy(&table->eviction_groups_by_id); | |
6600 | heap_destroy(&table->eviction_groups_by_size); | |
6601 | ||
6602 | free(table->eviction_fields); | |
6603 | table->eviction_fields = NULL; | |
6604 | table->n_eviction_fields = 0; | |
6605 | } | |
6606 | } | |
6607 | ||
6608 | /* oftables support a choice of two policies when adding a rule would cause the | |
6609 | * number of flows in the table to exceed the configured maximum number: either | |
6610 | * they can refuse to add the new flow or they can evict some existing flow. | |
6611 | * This function configures the latter policy on 'table', with fairness based | |
6612 | * on the values of the 'n_fields' fields specified in 'fields'. (Specifying | |
6613 | * 'n_fields' as 0 disables fairness.) */ | |
6614 | static void | |
6615 | oftable_enable_eviction(struct oftable *table, | |
6616 | const struct mf_subfield *fields, size_t n_fields) | |
15aaf599 | 6617 | OVS_REQUIRES(ofproto_mutex) |
254750ce | 6618 | { |
254750ce BP |
6619 | struct rule *rule; |
6620 | ||
6621 | if (table->eviction_fields | |
6622 | && n_fields == table->n_eviction_fields | |
6623 | && (!n_fields | |
6624 | || !memcmp(fields, table->eviction_fields, | |
6625 | n_fields * sizeof *fields))) { | |
6626 | /* No change. */ | |
6627 | return; | |
6628 | } | |
6629 | ||
6630 | oftable_disable_eviction(table); | |
6631 | ||
6632 | table->n_eviction_fields = n_fields; | |
6633 | table->eviction_fields = xmemdup(fields, n_fields * sizeof *fields); | |
6634 | ||
6635 | table->eviction_group_id_basis = random_uint32(); | |
6636 | hmap_init(&table->eviction_groups_by_id); | |
6637 | heap_init(&table->eviction_groups_by_size); | |
6638 | ||
5f0476ce | 6639 | CLS_FOR_EACH (rule, cr, &table->cls) { |
254750ce BP |
6640 | eviction_group_add_rule(rule); |
6641 | } | |
d0918789 BP |
6642 | } |
6643 | ||
6644 | /* Removes 'rule' from the oftable that contains it. */ | |
6645 | static void | |
8b81d1ef | 6646 | oftable_remove_rule__(struct ofproto *ofproto, struct rule *rule) |
15aaf599 | 6647 | OVS_REQUIRES(ofproto_mutex) |
d0918789 | 6648 | { |
8b81d1ef BP |
6649 | struct classifier *cls = &ofproto->tables[rule->table_id].cls; |
6650 | ||
49a0e0eb | 6651 | classifier_remove(cls, CONST_CAST(struct cls_rule *, &rule->cr)); |
2c916028 | 6652 | |
98eaac36 | 6653 | cookies_remove(ofproto, rule); |
2c916028 | 6654 | |
254750ce | 6655 | eviction_group_remove_rule(rule); |
e503cc19 SH |
6656 | if (!list_is_empty(&rule->expirable)) { |
6657 | list_remove(&rule->expirable); | |
6658 | } | |
9cae45dc JR |
6659 | if (!list_is_empty(&rule->meter_list_node)) { |
6660 | list_remove(&rule->meter_list_node); | |
51b50dfd | 6661 | list_init(&rule->meter_list_node); |
9cae45dc | 6662 | } |
d0918789 BP |
6663 | } |
6664 | ||
0b4f2078 EJ |
6665 | static void |
6666 | oftable_remove_rule(struct rule *rule) | |
15aaf599 | 6667 | OVS_REQUIRES(ofproto_mutex) |
0b4f2078 | 6668 | { |
8b81d1ef | 6669 | oftable_remove_rule__(rule->ofproto, rule); |
0b4f2078 | 6670 | } |
d0918789 | 6671 | \f |
abe529af | 6672 | /* unixctl commands. */ |
7aa697dd | 6673 | |
abe529af | 6674 | struct ofproto * |
2ac6bedd | 6675 | ofproto_lookup(const char *name) |
7aa697dd | 6676 | { |
2ac6bedd | 6677 | struct ofproto *ofproto; |
7aa697dd | 6678 | |
2ac6bedd BP |
6679 | HMAP_FOR_EACH_WITH_HASH (ofproto, hmap_node, hash_string(name, 0), |
6680 | &all_ofprotos) { | |
6681 | if (!strcmp(ofproto->name, name)) { | |
6682 | return ofproto; | |
6683 | } | |
7aa697dd | 6684 | } |
2ac6bedd | 6685 | return NULL; |
7aa697dd BP |
6686 | } |
6687 | ||
6688 | static void | |
0e15264f BP |
6689 | ofproto_unixctl_list(struct unixctl_conn *conn, int argc OVS_UNUSED, |
6690 | const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED) | |
7aa697dd | 6691 | { |
7aa697dd | 6692 | struct ofproto *ofproto; |
7aa697dd | 6693 | struct ds results; |
7aa697dd | 6694 | |
7aa697dd | 6695 | ds_init(&results); |
2ac6bedd BP |
6696 | HMAP_FOR_EACH (ofproto, hmap_node, &all_ofprotos) { |
6697 | ds_put_format(&results, "%s\n", ofproto->name); | |
7aa697dd | 6698 | } |
bde9f75d | 6699 | unixctl_command_reply(conn, ds_cstr(&results)); |
7aa697dd | 6700 | ds_destroy(&results); |
7aa697dd BP |
6701 | } |
6702 | ||
6703 | static void | |
6704 | ofproto_unixctl_init(void) | |
6705 | { | |
6706 | static bool registered; | |
6707 | if (registered) { | |
6708 | return; | |
6709 | } | |
6710 | registered = true; | |
6711 | ||
0e15264f BP |
6712 | unixctl_command_register("ofproto/list", "", 0, 0, |
6713 | ofproto_unixctl_list, NULL); | |
064af421 | 6714 | } |
52a90c29 BP |
6715 | \f |
6716 | /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.) | |
6717 | * | |
6718 | * This is deprecated. It is only for compatibility with broken device drivers | |
6719 | * in old versions of Linux that do not properly support VLANs when VLAN | |
6720 | * devices are not used. When broken device drivers are no longer in | |
6721 | * widespread use, we will delete these interfaces. */ | |
6722 | ||
6723 | /* Sets a 1-bit in the 4096-bit 'vlan_bitmap' for each VLAN ID that is matched | |
6724 | * (exactly) by an OpenFlow rule in 'ofproto'. */ | |
6725 | void | |
6726 | ofproto_get_vlan_usage(struct ofproto *ofproto, unsigned long int *vlan_bitmap) | |
6727 | { | |
ac4aa4c8 JR |
6728 | struct match match; |
6729 | struct cls_rule target; | |
d0918789 | 6730 | const struct oftable *oftable; |
52a90c29 | 6731 | |
ac4aa4c8 JR |
6732 | match_init_catchall(&match); |
6733 | match_set_vlan_vid_masked(&match, htons(VLAN_CFI), htons(VLAN_CFI)); | |
6734 | cls_rule_init(&target, &match, 0); | |
6735 | ||
52a90c29 BP |
6736 | free(ofproto->vlan_bitmap); |
6737 | ofproto->vlan_bitmap = bitmap_allocate(4096); | |
6738 | ofproto->vlans_changed = false; | |
6739 | ||
d0918789 | 6740 | OFPROTO_FOR_EACH_TABLE (oftable, ofproto) { |
ac4aa4c8 | 6741 | struct rule *rule; |
52a90c29 | 6742 | |
5f0476ce | 6743 | CLS_FOR_EACH_TARGET (rule, cr, &oftable->cls, &target) { |
ac4aa4c8 JR |
6744 | if (minimask_get_vid_mask(&rule->cr.match.mask) == VLAN_VID_MASK) { |
6745 | uint16_t vid = miniflow_get_vid(&rule->cr.match.flow); | |
6746 | ||
6747 | bitmap_set1(vlan_bitmap, vid); | |
6748 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
52a90c29 BP |
6749 | } |
6750 | } | |
6751 | } | |
059ef3c6 EJ |
6752 | |
6753 | cls_rule_destroy(&target); | |
52a90c29 BP |
6754 | } |
6755 | ||
6756 | /* Returns true if new VLANs have come into use by the flow table since the | |
6757 | * last call to ofproto_get_vlan_usage(). | |
6758 | * | |
6759 | * We don't track when old VLANs stop being used. */ | |
6760 | bool | |
6761 | ofproto_has_vlan_usage_changed(const struct ofproto *ofproto) | |
6762 | { | |
6763 | return ofproto->vlans_changed; | |
6764 | } | |
6765 | ||
6766 | /* Configures a VLAN splinter binding between the ports identified by OpenFlow | |
6767 | * port numbers 'vlandev_ofp_port' and 'realdev_ofp_port'. If | |
6768 | * 'realdev_ofp_port' is nonzero, then the VLAN device is enslaved to the real | |
6769 | * device as a VLAN splinter for VLAN ID 'vid'. If 'realdev_ofp_port' is zero, | |
6770 | * then the VLAN device is un-enslaved. */ | |
6771 | int | |
4e022ec0 AW |
6772 | ofproto_port_set_realdev(struct ofproto *ofproto, ofp_port_t vlandev_ofp_port, |
6773 | ofp_port_t realdev_ofp_port, int vid) | |
52a90c29 BP |
6774 | { |
6775 | struct ofport *ofport; | |
6776 | int error; | |
6777 | ||
cb22974d | 6778 | ovs_assert(vlandev_ofp_port != realdev_ofp_port); |
52a90c29 BP |
6779 | |
6780 | ofport = ofproto_get_port(ofproto, vlandev_ofp_port); | |
6781 | if (!ofport) { | |
6782 | VLOG_WARN("%s: cannot set realdev on nonexistent port %"PRIu16, | |
6783 | ofproto->name, vlandev_ofp_port); | |
6784 | return EINVAL; | |
6785 | } | |
6786 | ||
6787 | if (!ofproto->ofproto_class->set_realdev) { | |
6788 | if (!vlandev_ofp_port) { | |
6789 | return 0; | |
6790 | } | |
6791 | VLOG_WARN("%s: vlan splinters not supported", ofproto->name); | |
6792 | return EOPNOTSUPP; | |
6793 | } | |
6794 | ||
6795 | error = ofproto->ofproto_class->set_realdev(ofport, realdev_ofp_port, vid); | |
6796 | if (error) { | |
6797 | VLOG_WARN("%s: setting realdev on port %"PRIu16" (%s) failed (%s)", | |
6798 | ofproto->name, vlandev_ofp_port, | |
10a89ef0 | 6799 | netdev_get_name(ofport->netdev), ovs_strerror(error)); |
52a90c29 BP |
6800 | } |
6801 | return error; | |
6802 | } |