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064af421 | 1 | /* |
3fbbcba7 | 2 | * Copyright (c) 2009-2015 Nicira, Inc. |
43253595 | 3 | * Copyright (c) 2010 Jean Tourrilhes - HP-Labs. |
064af421 | 4 | * |
a14bc59f BP |
5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
6 | * you may not use this file except in compliance with the License. | |
7 | * You may obtain a copy of the License at: | |
064af421 | 8 | * |
a14bc59f BP |
9 | * http://www.apache.org/licenses/LICENSE-2.0 |
10 | * | |
11 | * Unless required by applicable law or agreed to in writing, software | |
12 | * distributed under the License is distributed on an "AS IS" BASIS, | |
13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
14 | * See the License for the specific language governing permissions and | |
15 | * limitations under the License. | |
064af421 BP |
16 | */ |
17 | ||
18 | #include <config.h> | |
19 | #include "ofproto.h" | |
20 | #include <errno.h> | |
21 | #include <inttypes.h> | |
064af421 BP |
22 | #include <stdbool.h> |
23 | #include <stdlib.h> | |
448a4b2f | 24 | #include <unistd.h> |
52a90c29 | 25 | #include "bitmap.h" |
10a24935 | 26 | #include "byte-order.h" |
064af421 | 27 | #include "classifier.h" |
da4a6191 | 28 | #include "connectivity.h" |
19a87e36 | 29 | #include "connmgr.h" |
064af421 | 30 | #include "coverage.h" |
4f2cad2c | 31 | #include "dynamic-string.h" |
ca0f572c BP |
32 | #include "hash.h" |
33 | #include "hmap.h" | |
254750ce | 34 | #include "meta-flow.h" |
064af421 | 35 | #include "netdev.h" |
09246b99 | 36 | #include "nx-match.h" |
f25d0cf3 | 37 | #include "ofp-actions.h" |
90bf1e07 | 38 | #include "ofp-errors.h" |
982697a4 | 39 | #include "ofp-msgs.h" |
064af421 | 40 | #include "ofp-print.h" |
fa37b408 | 41 | #include "ofp-util.h" |
064af421 | 42 | #include "ofpbuf.h" |
5bee6e26 | 43 | #include "ofproto-provider.h" |
064af421 BP |
44 | #include "openflow/nicira-ext.h" |
45 | #include "openflow/openflow.h" | |
06a0f3e2 | 46 | #include "ovs-rcu.h" |
cf62fa4c | 47 | #include "dp-packet.h" |
064af421 BP |
48 | #include "packets.h" |
49 | #include "pinsched.h" | |
50 | #include "pktbuf.h" | |
51 | #include "poll-loop.h" | |
254750ce | 52 | #include "random.h" |
da4a6191 | 53 | #include "seq.h" |
064af421 | 54 | #include "shash.h" |
0d085684 | 55 | #include "simap.h" |
e8f9a7bb | 56 | #include "smap.h" |
b3c01ed3 | 57 | #include "sset.h" |
064af421 | 58 | #include "timeval.h" |
c4617b3c | 59 | #include "unaligned.h" |
4f2cad2c | 60 | #include "unixctl.h" |
e6211adc | 61 | #include "openvswitch/vlog.h" |
777af88d | 62 | #include "bundles.h" |
064af421 | 63 | |
d98e6007 | 64 | VLOG_DEFINE_THIS_MODULE(ofproto); |
064af421 | 65 | |
d76f09ea | 66 | COVERAGE_DEFINE(ofproto_flush); |
d76f09ea BP |
67 | COVERAGE_DEFINE(ofproto_packet_out); |
68 | COVERAGE_DEFINE(ofproto_queue_req); | |
69 | COVERAGE_DEFINE(ofproto_recv_openflow); | |
70 | COVERAGE_DEFINE(ofproto_reinit_ports); | |
d76f09ea BP |
71 | COVERAGE_DEFINE(ofproto_update_port); |
72 | ||
f017d986 JR |
73 | /* Default fields to use for prefix tries in each flow table, unless something |
74 | * else is configured. */ | |
75 | const enum mf_field_id default_prefix_fields[2] = | |
76 | { MFF_IPV4_DST, MFF_IPV4_SRC }; | |
77 | ||
d0918789 BP |
78 | /* oftable. */ |
79 | static void oftable_init(struct oftable *); | |
80 | static void oftable_destroy(struct oftable *); | |
878ae780 | 81 | |
254750ce BP |
82 | static void oftable_set_name(struct oftable *, const char *name); |
83 | ||
834fe5cb BP |
84 | static enum ofperr evict_rules_from_table(struct oftable *, |
85 | unsigned int extra_space) | |
86 | OVS_REQUIRES(ofproto_mutex); | |
254750ce BP |
87 | static void oftable_disable_eviction(struct oftable *); |
88 | static void oftable_enable_eviction(struct oftable *, | |
89 | const struct mf_subfield *fields, | |
90 | size_t n_fields); | |
91 | ||
15aaf599 | 92 | static void oftable_remove_rule(struct rule *rule) OVS_REQUIRES(ofproto_mutex); |
064af421 | 93 | |
254750ce BP |
94 | /* A set of rules within a single OpenFlow table (oftable) that have the same |
95 | * values for the oftable's eviction_fields. A rule to be evicted, when one is | |
96 | * needed, is taken from the eviction group that contains the greatest number | |
97 | * of rules. | |
98 | * | |
99 | * An oftable owns any number of eviction groups, each of which contains any | |
100 | * number of rules. | |
101 | * | |
102 | * Membership in an eviction group is imprecise, based on the hash of the | |
103 | * oftable's eviction_fields (in the eviction_group's id_node.hash member). | |
104 | * That is, if two rules have different eviction_fields, but those | |
105 | * eviction_fields hash to the same value, then they will belong to the same | |
106 | * eviction_group anyway. | |
107 | * | |
108 | * (When eviction is not enabled on an oftable, we don't track any eviction | |
109 | * groups, to save time and space.) */ | |
110 | struct eviction_group { | |
111 | struct hmap_node id_node; /* In oftable's "eviction_groups_by_id". */ | |
112 | struct heap_node size_node; /* In oftable's "eviction_groups_by_size". */ | |
113 | struct heap rules; /* Contains "struct rule"s. */ | |
114 | }; | |
115 | ||
3d900aa7 BP |
116 | static bool choose_rule_to_evict(struct oftable *table, struct rule **rulep) |
117 | OVS_REQUIRES(ofproto_mutex); | |
3d900aa7 BP |
118 | static uint32_t rule_eviction_priority(struct ofproto *ofproto, struct rule *) |
119 | OVS_REQUIRES(ofproto_mutex);; | |
120 | static void eviction_group_add_rule(struct rule *) | |
121 | OVS_REQUIRES(ofproto_mutex); | |
122 | static void eviction_group_remove_rule(struct rule *) | |
123 | OVS_REQUIRES(ofproto_mutex); | |
f29152ca | 124 | |
a9b22b7f BP |
125 | /* Criteria that flow_mod and other operations use for selecting rules on |
126 | * which to operate. */ | |
127 | struct rule_criteria { | |
128 | /* An OpenFlow table or 255 for all tables. */ | |
129 | uint8_t table_id; | |
130 | ||
131 | /* OpenFlow matching criteria. Interpreted different in "loose" way by | |
132 | * collect_rules_loose() and "strict" way by collect_rules_strict(), as | |
133 | * defined in the OpenFlow spec. */ | |
134 | struct cls_rule cr; | |
135 | ||
136 | /* Matching criteria for the OpenFlow cookie. Consider a bit B in a rule's | |
137 | * cookie and the corresponding bits C in 'cookie' and M in 'cookie_mask'. | |
138 | * The rule will not be selected if M is 1 and B != C. */ | |
139 | ovs_be64 cookie; | |
140 | ovs_be64 cookie_mask; | |
141 | ||
142 | /* Selection based on actions within a rule: | |
143 | * | |
144 | * If out_port != OFPP_ANY, selects only rules that output to out_port. | |
145 | * If out_group != OFPG_ALL, select only rules that output to out_group. */ | |
146 | ofp_port_t out_port; | |
147 | uint32_t out_group; | |
dd51dae2 BP |
148 | |
149 | /* If true, collects only rules that are modifiable. */ | |
150 | bool include_hidden; | |
151 | bool include_readonly; | |
a9b22b7f BP |
152 | }; |
153 | ||
154 | static void rule_criteria_init(struct rule_criteria *, uint8_t table_id, | |
eb391b76 | 155 | const struct match *match, int priority, |
a9b22b7f BP |
156 | ovs_be64 cookie, ovs_be64 cookie_mask, |
157 | ofp_port_t out_port, uint32_t out_group); | |
dd51dae2 BP |
158 | static void rule_criteria_require_rw(struct rule_criteria *, |
159 | bool can_write_readonly); | |
a9b22b7f BP |
160 | static void rule_criteria_destroy(struct rule_criteria *); |
161 | ||
35f48b8b BP |
162 | static enum ofperr collect_rules_loose(struct ofproto *, |
163 | const struct rule_criteria *, | |
164 | struct rule_collection *); | |
165 | ||
15aaf599 BP |
166 | /* A packet that needs to be passed to rule_execute(). |
167 | * | |
168 | * (We can't do this immediately from ofopgroup_complete() because that holds | |
169 | * ofproto_mutex, which rule_execute() needs released.) */ | |
35412852 | 170 | struct rule_execute { |
ca6ba700 | 171 | struct ovs_list list_node; /* In struct ofproto's "rule_executes" list. */ |
35412852 BP |
172 | struct rule *rule; /* Owns a reference to the rule. */ |
173 | ofp_port_t in_port; | |
cf62fa4c | 174 | struct dp_packet *packet; /* Owns the packet. */ |
35412852 BP |
175 | }; |
176 | ||
15aaf599 | 177 | static void run_rule_executes(struct ofproto *) OVS_EXCLUDED(ofproto_mutex); |
35412852 BP |
178 | static void destroy_rule_executes(struct ofproto *); |
179 | ||
35f48b8b BP |
180 | struct learned_cookie { |
181 | union { | |
182 | /* In struct ofproto's 'learned_cookies' hmap. */ | |
183 | struct hmap_node hmap_node OVS_GUARDED_BY(ofproto_mutex); | |
184 | ||
185 | /* In 'dead_cookies' list when removed from hmap. */ | |
ca6ba700 | 186 | struct ovs_list list_node; |
35f48b8b BP |
187 | } u; |
188 | ||
189 | /* Key. */ | |
190 | ovs_be64 cookie OVS_GUARDED_BY(ofproto_mutex); | |
191 | uint8_t table_id OVS_GUARDED_BY(ofproto_mutex); | |
192 | ||
193 | /* Number of references from "learn" actions. | |
194 | * | |
195 | * When this drops to 0, all of the flows in 'table_id' with the specified | |
196 | * 'cookie' are deleted. */ | |
197 | int n OVS_GUARDED_BY(ofproto_mutex); | |
198 | }; | |
199 | ||
200 | static const struct ofpact_learn *next_learn_with_delete( | |
201 | const struct rule_actions *, const struct ofpact_learn *start); | |
202 | ||
203 | static void learned_cookies_inc(struct ofproto *, const struct rule_actions *) | |
204 | OVS_REQUIRES(ofproto_mutex); | |
205 | static void learned_cookies_dec(struct ofproto *, const struct rule_actions *, | |
ca6ba700 | 206 | struct ovs_list *dead_cookies) |
35f48b8b | 207 | OVS_REQUIRES(ofproto_mutex); |
ca6ba700 | 208 | static void learned_cookies_flush(struct ofproto *, struct ovs_list *dead_cookies) |
35f48b8b BP |
209 | OVS_REQUIRES(ofproto_mutex); |
210 | ||
d0918789 | 211 | /* ofport. */ |
15aaf599 | 212 | static void ofport_destroy__(struct ofport *) OVS_EXCLUDED(ofproto_mutex); |
d0918789 BP |
213 | static void ofport_destroy(struct ofport *); |
214 | ||
215 | static void update_port(struct ofproto *, const char *devname); | |
216 | static int init_ports(struct ofproto *); | |
217 | static void reinit_ports(struct ofproto *); | |
7ee20df1 | 218 | |
fdcea803 GS |
219 | static long long int ofport_get_usage(const struct ofproto *, |
220 | ofp_port_t ofp_port); | |
221 | static void ofport_set_usage(struct ofproto *, ofp_port_t ofp_port, | |
222 | long long int last_used); | |
865b26a4 | 223 | static void ofport_remove_usage(struct ofproto *, ofp_port_t ofp_port); |
fdcea803 GS |
224 | |
225 | /* Ofport usage. | |
226 | * | |
227 | * Keeps track of the currently used and recently used ofport values and is | |
228 | * used to prevent immediate recycling of ofport values. */ | |
229 | struct ofport_usage { | |
230 | struct hmap_node hmap_node; /* In struct ofproto's "ofport_usage" hmap. */ | |
231 | ofp_port_t ofp_port; /* OpenFlow port number. */ | |
232 | long long int last_used; /* Last time the 'ofp_port' was used. LLONG_MAX | |
233 | represents in-use ofports. */ | |
234 | }; | |
235 | ||
254750ce | 236 | /* rule. */ |
254750ce | 237 | static void ofproto_rule_send_removed(struct rule *, uint8_t reason); |
834fe5cb | 238 | static bool rule_is_readonly(const struct rule *); |
bc5e6a91 JR |
239 | static void ofproto_rule_insert__(struct ofproto *, struct rule *) |
240 | OVS_REQUIRES(ofproto_mutex); | |
802f84ff JR |
241 | static void ofproto_rule_remove__(struct ofproto *, struct rule *) |
242 | OVS_REQUIRES(ofproto_mutex); | |
254750ce | 243 | |
baae3d02 BP |
244 | /* The source of a flow_mod request, in the code that processes flow_mods. |
245 | * | |
246 | * A flow table modification request can be generated externally, via OpenFlow, | |
247 | * or internally through a function call. This structure indicates the source | |
248 | * of an OpenFlow-generated flow_mod. For an internal flow_mod, it isn't | |
249 | * meaningful and thus supplied as NULL. */ | |
250 | struct flow_mod_requester { | |
251 | struct ofconn *ofconn; /* Connection on which flow_mod arrived. */ | |
834fe5cb | 252 | ovs_be32 xid; /* OpenFlow xid of flow_mod request. */ |
baae3d02 BP |
253 | }; |
254 | ||
d0918789 | 255 | /* OpenFlow. */ |
baae3d02 BP |
256 | static enum ofperr add_flow(struct ofproto *, struct ofputil_flow_mod *, |
257 | const struct flow_mod_requester *); | |
258 | ||
259 | static enum ofperr modify_flows__(struct ofproto *, struct ofputil_flow_mod *, | |
260 | const struct rule_collection *, | |
261 | const struct flow_mod_requester *); | |
9ca4a86f BP |
262 | static void delete_flows__(const struct rule_collection *, |
263 | enum ofp_flow_removed_reason, | |
264 | const struct flow_mod_requester *) | |
15aaf599 | 265 | OVS_REQUIRES(ofproto_mutex); |
834fe5cb BP |
266 | |
267 | static enum ofperr send_buffered_packet(struct ofconn *, uint32_t buffer_id, | |
268 | struct rule *) | |
269 | OVS_REQUIRES(ofproto_mutex); | |
270 | ||
7e9f8266 BP |
271 | static bool ofproto_group_exists__(const struct ofproto *ofproto, |
272 | uint32_t group_id) | |
273 | OVS_REQ_RDLOCK(ofproto->groups_rwlock); | |
84d68566 SH |
274 | static bool ofproto_group_exists(const struct ofproto *ofproto, |
275 | uint32_t group_id) | |
7e9f8266 | 276 | OVS_EXCLUDED(ofproto->groups_rwlock); |
7395c052 | 277 | static enum ofperr add_group(struct ofproto *, struct ofputil_group_mod *); |
b20f4073 | 278 | static void handle_openflow(struct ofconn *, const struct ofpbuf *); |
baae3d02 | 279 | static enum ofperr handle_flow_mod__(struct ofproto *, |
e3b56933 | 280 | struct ofputil_flow_mod *, |
baae3d02 | 281 | const struct flow_mod_requester *) |
15aaf599 | 282 | OVS_EXCLUDED(ofproto_mutex); |
65e0be10 BP |
283 | static void calc_duration(long long int start, long long int now, |
284 | uint32_t *sec, uint32_t *nsec); | |
f29152ca | 285 | |
d0918789 BP |
286 | /* ofproto. */ |
287 | static uint64_t pick_datapath_id(const struct ofproto *); | |
288 | static uint64_t pick_fallback_dpid(void); | |
289 | static void ofproto_destroy__(struct ofproto *); | |
ada3428f | 290 | static void update_mtu(struct ofproto *, struct ofport *); |
6b3f7f02 | 291 | static void meter_delete(struct ofproto *, uint32_t first, uint32_t last); |
062fea06 | 292 | static void meter_insert_rule(struct rule *); |
f29152ca | 293 | |
d0918789 | 294 | /* unixctl. */ |
abe529af | 295 | static void ofproto_unixctl_init(void); |
f29152ca | 296 | |
abe529af BP |
297 | /* All registered ofproto classes, in probe order. */ |
298 | static const struct ofproto_class **ofproto_classes; | |
299 | static size_t n_ofproto_classes; | |
300 | static size_t allocated_ofproto_classes; | |
7aa697dd | 301 | |
15aaf599 BP |
302 | /* Global lock that protects all flow table operations. */ |
303 | struct ovs_mutex ofproto_mutex = OVS_MUTEX_INITIALIZER; | |
abe7b10f | 304 | |
e79a6c83 | 305 | unsigned ofproto_flow_limit = OFPROTO_FLOW_LIMIT_DEFAULT; |
72310b04 | 306 | unsigned ofproto_max_idle = OFPROTO_MAX_IDLE_DEFAULT; |
380f49c4 | 307 | |
e79a6c83 | 308 | size_t n_handlers, n_revalidators; |
f2eee189 AW |
309 | size_t n_dpdk_rxqs; |
310 | char *pmd_cpu_mask; | |
6567010f | 311 | |
f797957a | 312 | /* Map from datapath name to struct ofproto, for use by unixctl commands. */ |
abe529af | 313 | static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos); |
ebe482fd | 314 | |
e1b1d06a JP |
315 | /* Initial mappings of port to OpenFlow number mappings. */ |
316 | static struct shash init_ofp_ports = SHASH_INITIALIZER(&init_ofp_ports); | |
317 | ||
abe529af | 318 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
f29152ca | 319 | |
40358701 GS |
320 | /* The default value of true waits for flow restore. */ |
321 | static bool flow_restore_wait = true; | |
322 | ||
b0408fca JP |
323 | /* Must be called to initialize the ofproto library. |
324 | * | |
325 | * The caller may pass in 'iface_hints', which contains an shash of | |
326 | * "iface_hint" elements indexed by the interface's name. The provider | |
327 | * may use these hints to describe the startup configuration in order to | |
328 | * reinitialize its state. The caller owns the provided data, so a | |
329 | * provider will make copies of anything required. An ofproto provider | |
330 | * will remove any existing state that is not described by the hint, and | |
331 | * may choose to remove it all. */ | |
332 | void | |
333 | ofproto_init(const struct shash *iface_hints) | |
abe529af | 334 | { |
e1b1d06a | 335 | struct shash_node *node; |
b0408fca | 336 | size_t i; |
f29152ca | 337 | |
b0408fca JP |
338 | ofproto_class_register(&ofproto_dpif_class); |
339 | ||
e1b1d06a JP |
340 | /* Make a local copy, since we don't own 'iface_hints' elements. */ |
341 | SHASH_FOR_EACH(node, iface_hints) { | |
342 | const struct iface_hint *orig_hint = node->data; | |
343 | struct iface_hint *new_hint = xmalloc(sizeof *new_hint); | |
344 | const char *br_type = ofproto_normalize_type(orig_hint->br_type); | |
345 | ||
346 | new_hint->br_name = xstrdup(orig_hint->br_name); | |
347 | new_hint->br_type = xstrdup(br_type); | |
348 | new_hint->ofp_port = orig_hint->ofp_port; | |
349 | ||
350 | shash_add(&init_ofp_ports, node->name, new_hint); | |
351 | } | |
352 | ||
b0408fca | 353 | for (i = 0; i < n_ofproto_classes; i++) { |
e1b1d06a | 354 | ofproto_classes[i]->init(&init_ofp_ports); |
abe529af BP |
355 | } |
356 | } | |
f29152ca | 357 | |
abe529af BP |
358 | /* 'type' should be a normalized datapath type, as returned by |
359 | * ofproto_normalize_type(). Returns the corresponding ofproto_class | |
360 | * structure, or a null pointer if there is none registered for 'type'. */ | |
361 | static const struct ofproto_class * | |
362 | ofproto_class_find__(const char *type) | |
363 | { | |
364 | size_t i; | |
f29152ca | 365 | |
abe529af BP |
366 | for (i = 0; i < n_ofproto_classes; i++) { |
367 | const struct ofproto_class *class = ofproto_classes[i]; | |
368 | struct sset types; | |
369 | bool found; | |
064af421 | 370 | |
abe529af BP |
371 | sset_init(&types); |
372 | class->enumerate_types(&types); | |
373 | found = sset_contains(&types, type); | |
374 | sset_destroy(&types); | |
bcf84111 | 375 | |
abe529af BP |
376 | if (found) { |
377 | return class; | |
378 | } | |
379 | } | |
380 | VLOG_WARN("unknown datapath type %s", type); | |
381 | return NULL; | |
382 | } | |
064af421 | 383 | |
abe529af BP |
384 | /* Registers a new ofproto class. After successful registration, new ofprotos |
385 | * of that type can be created using ofproto_create(). */ | |
386 | int | |
387 | ofproto_class_register(const struct ofproto_class *new_class) | |
388 | { | |
389 | size_t i; | |
7aa697dd | 390 | |
abe529af BP |
391 | for (i = 0; i < n_ofproto_classes; i++) { |
392 | if (ofproto_classes[i] == new_class) { | |
393 | return EEXIST; | |
394 | } | |
395 | } | |
064af421 | 396 | |
abe529af BP |
397 | if (n_ofproto_classes >= allocated_ofproto_classes) { |
398 | ofproto_classes = x2nrealloc(ofproto_classes, | |
399 | &allocated_ofproto_classes, | |
400 | sizeof *ofproto_classes); | |
401 | } | |
402 | ofproto_classes[n_ofproto_classes++] = new_class; | |
403 | return 0; | |
404 | } | |
064af421 | 405 | |
abe529af BP |
406 | /* Unregisters a datapath provider. 'type' must have been previously |
407 | * registered and not currently be in use by any ofprotos. After | |
408 | * unregistration new datapaths of that type cannot be opened using | |
409 | * ofproto_create(). */ | |
410 | int | |
411 | ofproto_class_unregister(const struct ofproto_class *class) | |
412 | { | |
413 | size_t i; | |
76ce9432 | 414 | |
abe529af BP |
415 | for (i = 0; i < n_ofproto_classes; i++) { |
416 | if (ofproto_classes[i] == class) { | |
417 | for (i++; i < n_ofproto_classes; i++) { | |
418 | ofproto_classes[i - 1] = ofproto_classes[i]; | |
419 | } | |
420 | n_ofproto_classes--; | |
421 | return 0; | |
422 | } | |
423 | } | |
424 | VLOG_WARN("attempted to unregister an ofproto class that is not " | |
425 | "registered"); | |
426 | return EAFNOSUPPORT; | |
427 | } | |
4a4cdb3b | 428 | |
f79e673f BP |
429 | /* Clears 'types' and enumerates all registered ofproto types into it. The |
430 | * caller must first initialize the sset. */ | |
431 | void | |
432 | ofproto_enumerate_types(struct sset *types) | |
433 | { | |
abe529af | 434 | size_t i; |
064af421 | 435 | |
c799c306 | 436 | sset_clear(types); |
abe529af BP |
437 | for (i = 0; i < n_ofproto_classes; i++) { |
438 | ofproto_classes[i]->enumerate_types(types); | |
439 | } | |
f79e673f | 440 | } |
064af421 | 441 | |
f79e673f BP |
442 | /* Returns the fully spelled out name for the given ofproto 'type'. |
443 | * | |
444 | * Normalized type string can be compared with strcmp(). Unnormalized type | |
445 | * string might be the same even if they have different spellings. */ | |
446 | const char * | |
447 | ofproto_normalize_type(const char *type) | |
448 | { | |
abe529af | 449 | return type && type[0] ? type : "system"; |
f79e673f | 450 | } |
064af421 | 451 | |
f79e673f BP |
452 | /* Clears 'names' and enumerates the names of all known created ofprotos with |
453 | * the given 'type'. The caller must first initialize the sset. Returns 0 if | |
454 | * successful, otherwise a positive errno value. | |
455 | * | |
456 | * Some kinds of datapaths might not be practically enumerable. This is not | |
457 | * considered an error. */ | |
458 | int | |
459 | ofproto_enumerate_names(const char *type, struct sset *names) | |
460 | { | |
abe529af BP |
461 | const struct ofproto_class *class = ofproto_class_find__(type); |
462 | return class ? class->enumerate_names(type, names) : EAFNOSUPPORT; | |
239ad7d1 | 463 | } |
7aa697dd | 464 | |
064af421 | 465 | int |
abe529af | 466 | ofproto_create(const char *datapath_name, const char *datapath_type, |
064af421 BP |
467 | struct ofproto **ofprotop) |
468 | { | |
abe529af BP |
469 | const struct ofproto_class *class; |
470 | struct ofproto *ofproto; | |
064af421 | 471 | int error; |
c2f0373a | 472 | int i; |
064af421 BP |
473 | |
474 | *ofprotop = NULL; | |
475 | ||
7aa697dd BP |
476 | ofproto_unixctl_init(); |
477 | ||
abe529af BP |
478 | datapath_type = ofproto_normalize_type(datapath_type); |
479 | class = ofproto_class_find__(datapath_type); | |
480 | if (!class) { | |
481 | VLOG_WARN("could not create datapath %s of unknown type %s", | |
482 | datapath_name, datapath_type); | |
483 | return EAFNOSUPPORT; | |
064af421 BP |
484 | } |
485 | ||
abe529af BP |
486 | ofproto = class->alloc(); |
487 | if (!ofproto) { | |
488 | VLOG_ERR("failed to allocate datapath %s of type %s", | |
489 | datapath_name, datapath_type); | |
490 | return ENOMEM; | |
491 | } | |
492 | ||
493 | /* Initialize. */ | |
abe7b10f | 494 | ovs_mutex_lock(&ofproto_mutex); |
abe529af BP |
495 | memset(ofproto, 0, sizeof *ofproto); |
496 | ofproto->ofproto_class = class; | |
497 | ofproto->name = xstrdup(datapath_name); | |
498 | ofproto->type = xstrdup(datapath_type); | |
499 | hmap_insert(&all_ofprotos, &ofproto->hmap_node, | |
500 | hash_string(ofproto->name, 0)); | |
501 | ofproto->datapath_id = 0; | |
8402c74b | 502 | ofproto->forward_bpdu = false; |
abe529af | 503 | ofproto->fallback_dpid = pick_fallback_dpid(); |
061bfea4 BP |
504 | ofproto->mfr_desc = NULL; |
505 | ofproto->hw_desc = NULL; | |
506 | ofproto->sw_desc = NULL; | |
507 | ofproto->serial_desc = NULL; | |
508 | ofproto->dp_desc = NULL; | |
7257b535 | 509 | ofproto->frag_handling = OFPC_FRAG_NORMAL; |
abe529af | 510 | hmap_init(&ofproto->ports); |
fdcea803 | 511 | hmap_init(&ofproto->ofport_usage); |
abe529af | 512 | shash_init(&ofproto->port_by_name); |
e1b1d06a | 513 | simap_init(&ofproto->ofp_requests); |
430dbb14 | 514 | ofproto->max_ports = ofp_to_u16(OFPP_MAX); |
448c2fa8 | 515 | ofproto->eviction_group_timer = LLONG_MIN; |
6c1491fb BP |
516 | ofproto->tables = NULL; |
517 | ofproto->n_tables = 0; | |
98eaac36 | 518 | hindex_init(&ofproto->cookies); |
35f48b8b | 519 | hmap_init(&ofproto->learned_cookies); |
e503cc19 | 520 | list_init(&ofproto->expirable); |
abe529af | 521 | ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name); |
35412852 | 522 | guarded_list_init(&ofproto->rule_executes); |
52a90c29 BP |
523 | ofproto->vlan_bitmap = NULL; |
524 | ofproto->vlans_changed = false; | |
ada3428f | 525 | ofproto->min_mtu = INT_MAX; |
7395c052 NZ |
526 | ovs_rwlock_init(&ofproto->groups_rwlock); |
527 | hmap_init(&ofproto->groups); | |
abe7b10f | 528 | ovs_mutex_unlock(&ofproto_mutex); |
0ae01c64 | 529 | ofproto->ogf.types = 0xf; |
7cb279c2 SH |
530 | ofproto->ogf.capabilities = OFPGFC_CHAINING | OFPGFC_SELECT_LIVENESS | |
531 | OFPGFC_SELECT_WEIGHT; | |
08d1e234 BP |
532 | for (i = 0; i < 4; i++) { |
533 | ofproto->ogf.max_groups[i] = OFPG_MAX; | |
534 | ofproto->ogf.ofpacts[i] = (UINT64_C(1) << N_OFPACTS) - 1; | |
535 | } | |
abe529af | 536 | |
0f5f95a9 | 537 | error = ofproto->ofproto_class->construct(ofproto); |
19a87e36 | 538 | if (error) { |
abe529af | 539 | VLOG_ERR("failed to open datapath %s: %s", |
10a89ef0 | 540 | datapath_name, ovs_strerror(error)); |
58f19539 | 541 | connmgr_destroy(ofproto->connmgr); |
abe529af | 542 | ofproto_destroy__(ofproto); |
19a87e36 BP |
543 | return error; |
544 | } | |
073e2a6f | 545 | |
c2f0373a | 546 | /* Check that hidden tables, if any, are at the end. */ |
cb22974d | 547 | ovs_assert(ofproto->n_tables); |
c2f0373a BP |
548 | for (i = 0; i + 1 < ofproto->n_tables; i++) { |
549 | enum oftable_flags flags = ofproto->tables[i].flags; | |
550 | enum oftable_flags next_flags = ofproto->tables[i + 1].flags; | |
551 | ||
cb22974d | 552 | ovs_assert(!(flags & OFTABLE_HIDDEN) || next_flags & OFTABLE_HIDDEN); |
c2f0373a | 553 | } |
19a87e36 | 554 | |
abe529af | 555 | ofproto->datapath_id = pick_datapath_id(ofproto); |
abe529af | 556 | init_ports(ofproto); |
7aa697dd | 557 | |
9cae45dc JR |
558 | /* Initialize meters table. */ |
559 | if (ofproto->ofproto_class->meter_get_features) { | |
560 | ofproto->ofproto_class->meter_get_features(ofproto, | |
561 | &ofproto->meter_features); | |
562 | } else { | |
563 | memset(&ofproto->meter_features, 0, sizeof ofproto->meter_features); | |
564 | } | |
565 | ofproto->meters = xzalloc((ofproto->meter_features.max_meters + 1) | |
566 | * sizeof(struct meter *)); | |
567 | ||
abe529af | 568 | *ofprotop = ofproto; |
064af421 BP |
569 | return 0; |
570 | } | |
571 | ||
91858960 BP |
572 | /* Must be called (only) by an ofproto implementation in its constructor |
573 | * function. See the large comment on 'construct' in struct ofproto_class for | |
574 | * details. */ | |
0f5f95a9 BP |
575 | void |
576 | ofproto_init_tables(struct ofproto *ofproto, int n_tables) | |
577 | { | |
578 | struct oftable *table; | |
579 | ||
cb22974d BP |
580 | ovs_assert(!ofproto->n_tables); |
581 | ovs_assert(n_tables >= 1 && n_tables <= 255); | |
0f5f95a9 BP |
582 | |
583 | ofproto->n_tables = n_tables; | |
584 | ofproto->tables = xmalloc(n_tables * sizeof *ofproto->tables); | |
585 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
586 | oftable_init(table); | |
587 | } | |
588 | } | |
589 | ||
91858960 BP |
590 | /* To be optionally called (only) by an ofproto implementation in its |
591 | * constructor function. See the large comment on 'construct' in struct | |
592 | * ofproto_class for details. | |
593 | * | |
594 | * Sets the maximum number of ports to 'max_ports'. The ofproto generic layer | |
595 | * will then ensure that actions passed into the ofproto implementation will | |
596 | * not refer to OpenFlow ports numbered 'max_ports' or higher. If this | |
597 | * function is not called, there will be no such restriction. | |
598 | * | |
599 | * Reserved ports numbered OFPP_MAX and higher are special and not subject to | |
600 | * the 'max_ports' restriction. */ | |
601 | void | |
430dbb14 | 602 | ofproto_init_max_ports(struct ofproto *ofproto, uint16_t max_ports) |
91858960 | 603 | { |
430dbb14 | 604 | ovs_assert(max_ports <= ofp_to_u16(OFPP_MAX)); |
91858960 BP |
605 | ofproto->max_ports = max_ports; |
606 | } | |
607 | ||
e825ace2 BP |
608 | uint64_t |
609 | ofproto_get_datapath_id(const struct ofproto *ofproto) | |
610 | { | |
611 | return ofproto->datapath_id; | |
612 | } | |
613 | ||
064af421 BP |
614 | void |
615 | ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id) | |
616 | { | |
617 | uint64_t old_dpid = p->datapath_id; | |
fa60c019 | 618 | p->datapath_id = datapath_id ? datapath_id : pick_datapath_id(p); |
064af421 | 619 | if (p->datapath_id != old_dpid) { |
76ce9432 BP |
620 | /* Force all active connections to reconnect, since there is no way to |
621 | * notify a controller that the datapath ID has changed. */ | |
fa05809b | 622 | ofproto_reconnect_controllers(p); |
064af421 BP |
623 | } |
624 | } | |
625 | ||
76ce9432 BP |
626 | void |
627 | ofproto_set_controllers(struct ofproto *p, | |
628 | const struct ofproto_controller *controllers, | |
1d9ffc17 | 629 | size_t n_controllers, uint32_t allowed_versions) |
76ce9432 | 630 | { |
1d9ffc17 SH |
631 | connmgr_set_controllers(p->connmgr, controllers, n_controllers, |
632 | allowed_versions); | |
064af421 BP |
633 | } |
634 | ||
31681a5d JP |
635 | void |
636 | ofproto_set_fail_mode(struct ofproto *p, enum ofproto_fail_mode fail_mode) | |
637 | { | |
19a87e36 | 638 | connmgr_set_fail_mode(p->connmgr, fail_mode); |
31681a5d JP |
639 | } |
640 | ||
fa05809b BP |
641 | /* Drops the connections between 'ofproto' and all of its controllers, forcing |
642 | * them to reconnect. */ | |
643 | void | |
644 | ofproto_reconnect_controllers(struct ofproto *ofproto) | |
645 | { | |
19a87e36 | 646 | connmgr_reconnect(ofproto->connmgr); |
917e50e1 BP |
647 | } |
648 | ||
649 | /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s | |
650 | * in-band control should guarantee access, in the same way that in-band | |
651 | * control guarantees access to OpenFlow controllers. */ | |
652 | void | |
653 | ofproto_set_extra_in_band_remotes(struct ofproto *ofproto, | |
654 | const struct sockaddr_in *extras, size_t n) | |
655 | { | |
19a87e36 | 656 | connmgr_set_extra_in_band_remotes(ofproto->connmgr, extras, n); |
917e50e1 BP |
657 | } |
658 | ||
b1da6250 BP |
659 | /* Sets the OpenFlow queue used by flows set up by in-band control on |
660 | * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control | |
661 | * flows will use the default queue. */ | |
662 | void | |
663 | ofproto_set_in_band_queue(struct ofproto *ofproto, int queue_id) | |
664 | { | |
19a87e36 | 665 | connmgr_set_in_band_queue(ofproto->connmgr, queue_id); |
b1da6250 BP |
666 | } |
667 | ||
084f5290 SH |
668 | /* Sets the number of flows at which eviction from the kernel flow table |
669 | * will occur. */ | |
670 | void | |
e79a6c83 | 671 | ofproto_set_flow_limit(unsigned limit) |
084f5290 | 672 | { |
e79a6c83 | 673 | ofproto_flow_limit = limit; |
084f5290 SH |
674 | } |
675 | ||
72310b04 JS |
676 | /* Sets the maximum idle time for flows in the datapath before they are |
677 | * expired. */ | |
678 | void | |
679 | ofproto_set_max_idle(unsigned max_idle) | |
680 | { | |
681 | ofproto_max_idle = max_idle; | |
682 | } | |
683 | ||
b53055f4 | 684 | /* If forward_bpdu is true, the NORMAL action will forward frames with |
8402c74b SS |
685 | * reserved (e.g. STP) destination Ethernet addresses. if forward_bpdu is false, |
686 | * the NORMAL action will drop these frames. */ | |
687 | void | |
688 | ofproto_set_forward_bpdu(struct ofproto *ofproto, bool forward_bpdu) | |
689 | { | |
690 | bool old_val = ofproto->forward_bpdu; | |
691 | ofproto->forward_bpdu = forward_bpdu; | |
692 | if (old_val != ofproto->forward_bpdu) { | |
693 | if (ofproto->ofproto_class->forward_bpdu_changed) { | |
694 | ofproto->ofproto_class->forward_bpdu_changed(ofproto); | |
695 | } | |
b53055f4 | 696 | } |
8402c74b SS |
697 | } |
698 | ||
e764773c | 699 | /* Sets the MAC aging timeout for the OFPP_NORMAL action on 'ofproto' to |
c4069512 BP |
700 | * 'idle_time', in seconds, and the maximum number of MAC table entries to |
701 | * 'max_entries'. */ | |
e764773c | 702 | void |
c4069512 BP |
703 | ofproto_set_mac_table_config(struct ofproto *ofproto, unsigned idle_time, |
704 | size_t max_entries) | |
e764773c | 705 | { |
c4069512 BP |
706 | if (ofproto->ofproto_class->set_mac_table_config) { |
707 | ofproto->ofproto_class->set_mac_table_config(ofproto, idle_time, | |
708 | max_entries); | |
e764773c BP |
709 | } |
710 | } | |
711 | ||
7c38d0a5 FL |
712 | /* Multicast snooping configuration. */ |
713 | ||
714 | /* Configures multicast snooping on 'ofproto' using the settings | |
715 | * defined in 's'. If 's' is NULL, disables multicast snooping. | |
716 | * | |
717 | * Returns 0 if successful, otherwise a positive errno value. */ | |
718 | int | |
719 | ofproto_set_mcast_snooping(struct ofproto *ofproto, | |
720 | const struct ofproto_mcast_snooping_settings *s) | |
721 | { | |
722 | return (ofproto->ofproto_class->set_mcast_snooping | |
723 | ? ofproto->ofproto_class->set_mcast_snooping(ofproto, s) | |
724 | : EOPNOTSUPP); | |
725 | } | |
726 | ||
8e04a33f | 727 | /* Configures multicast snooping flood settings on 'ofp_port' of 'ofproto'. |
7c38d0a5 FL |
728 | * |
729 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
730 | int | |
8e04a33f FL |
731 | ofproto_port_set_mcast_snooping(struct ofproto *ofproto, void *aux, |
732 | const struct ofproto_mcast_snooping_port_settings *s) | |
7c38d0a5 FL |
733 | { |
734 | return (ofproto->ofproto_class->set_mcast_snooping_port | |
8e04a33f | 735 | ? ofproto->ofproto_class->set_mcast_snooping_port(ofproto, aux, s) |
7c38d0a5 FL |
736 | : EOPNOTSUPP); |
737 | } | |
738 | ||
f2eee189 AW |
739 | void |
740 | ofproto_set_n_dpdk_rxqs(int n_rxqs) | |
741 | { | |
742 | n_dpdk_rxqs = MAX(n_rxqs, 0); | |
743 | } | |
744 | ||
745 | void | |
746 | ofproto_set_cpu_mask(const char *cmask) | |
747 | { | |
748 | free(pmd_cpu_mask); | |
749 | ||
750 | pmd_cpu_mask = cmask ? xstrdup(cmask) : NULL; | |
751 | } | |
752 | ||
448a4b2f | 753 | void |
30ea0da7 | 754 | ofproto_set_threads(int n_handlers_, int n_revalidators_) |
448a4b2f | 755 | { |
e79a6c83 EJ |
756 | int threads = MAX(count_cpu_cores(), 2); |
757 | ||
30ea0da7 GS |
758 | n_revalidators = MAX(n_revalidators_, 0); |
759 | n_handlers = MAX(n_handlers_, 0); | |
e79a6c83 EJ |
760 | |
761 | if (!n_revalidators) { | |
762 | n_revalidators = n_handlers | |
763 | ? MAX(threads - (int) n_handlers, 1) | |
764 | : threads / 4 + 1; | |
765 | } | |
766 | ||
767 | if (!n_handlers) { | |
768 | n_handlers = MAX(threads - (int) n_revalidators, 1); | |
769 | } | |
448a4b2f AW |
770 | } |
771 | ||
8b6ff729 BP |
772 | void |
773 | ofproto_set_dp_desc(struct ofproto *p, const char *dp_desc) | |
774 | { | |
775 | free(p->dp_desc); | |
776 | p->dp_desc = dp_desc ? xstrdup(dp_desc) : NULL; | |
777 | } | |
778 | ||
064af421 | 779 | int |
81e2083f | 780 | ofproto_set_snoops(struct ofproto *ofproto, const struct sset *snoops) |
064af421 | 781 | { |
19a87e36 | 782 | return connmgr_set_snoops(ofproto->connmgr, snoops); |
064af421 BP |
783 | } |
784 | ||
785 | int | |
0193b2af JG |
786 | ofproto_set_netflow(struct ofproto *ofproto, |
787 | const struct netflow_options *nf_options) | |
064af421 | 788 | { |
abe529af BP |
789 | if (nf_options && sset_is_empty(&nf_options->collectors)) { |
790 | nf_options = NULL; | |
791 | } | |
792 | ||
793 | if (ofproto->ofproto_class->set_netflow) { | |
794 | return ofproto->ofproto_class->set_netflow(ofproto, nf_options); | |
064af421 | 795 | } else { |
abe529af | 796 | return nf_options ? EOPNOTSUPP : 0; |
064af421 BP |
797 | } |
798 | } | |
799 | ||
abe529af | 800 | int |
72b06300 BP |
801 | ofproto_set_sflow(struct ofproto *ofproto, |
802 | const struct ofproto_sflow_options *oso) | |
803 | { | |
abe529af BP |
804 | if (oso && sset_is_empty(&oso->targets)) { |
805 | oso = NULL; | |
806 | } | |
72b06300 | 807 | |
abe529af BP |
808 | if (ofproto->ofproto_class->set_sflow) { |
809 | return ofproto->ofproto_class->set_sflow(ofproto, oso); | |
72b06300 | 810 | } else { |
abe529af | 811 | return oso ? EOPNOTSUPP : 0; |
72b06300 BP |
812 | } |
813 | } | |
29089a54 RL |
814 | |
815 | int | |
816 | ofproto_set_ipfix(struct ofproto *ofproto, | |
817 | const struct ofproto_ipfix_bridge_exporter_options *bo, | |
818 | const struct ofproto_ipfix_flow_exporter_options *fo, | |
819 | size_t n_fo) | |
820 | { | |
821 | if (ofproto->ofproto_class->set_ipfix) { | |
822 | return ofproto->ofproto_class->set_ipfix(ofproto, bo, fo, n_fo); | |
823 | } else { | |
824 | return (bo || fo) ? EOPNOTSUPP : 0; | |
825 | } | |
826 | } | |
40358701 GS |
827 | |
828 | void | |
829 | ofproto_set_flow_restore_wait(bool flow_restore_wait_db) | |
830 | { | |
831 | flow_restore_wait = flow_restore_wait_db; | |
832 | } | |
833 | ||
834 | bool | |
835 | ofproto_get_flow_restore_wait(void) | |
836 | { | |
837 | return flow_restore_wait; | |
838 | } | |
839 | ||
e7934396 | 840 | \f |
21f7563c JP |
841 | /* Spanning Tree Protocol (STP) configuration. */ |
842 | ||
843 | /* Configures STP on 'ofproto' using the settings defined in 's'. If | |
844 | * 's' is NULL, disables STP. | |
845 | * | |
846 | * Returns 0 if successful, otherwise a positive errno value. */ | |
847 | int | |
848 | ofproto_set_stp(struct ofproto *ofproto, | |
849 | const struct ofproto_stp_settings *s) | |
850 | { | |
851 | return (ofproto->ofproto_class->set_stp | |
852 | ? ofproto->ofproto_class->set_stp(ofproto, s) | |
853 | : EOPNOTSUPP); | |
854 | } | |
855 | ||
856 | /* Retrieves STP status of 'ofproto' and stores it in 's'. If the | |
857 | * 'enabled' member of 's' is false, then the other members are not | |
858 | * meaningful. | |
859 | * | |
860 | * Returns 0 if successful, otherwise a positive errno value. */ | |
861 | int | |
862 | ofproto_get_stp_status(struct ofproto *ofproto, | |
863 | struct ofproto_stp_status *s) | |
864 | { | |
865 | return (ofproto->ofproto_class->get_stp_status | |
866 | ? ofproto->ofproto_class->get_stp_status(ofproto, s) | |
867 | : EOPNOTSUPP); | |
868 | } | |
869 | ||
870 | /* Configures STP on 'ofp_port' of 'ofproto' using the settings defined | |
871 | * in 's'. The caller is responsible for assigning STP port numbers | |
872 | * (using the 'port_num' member in the range of 1 through 255, inclusive) | |
873 | * and ensuring there are no duplicates. If the 's' is NULL, then STP | |
874 | * is disabled on the port. | |
875 | * | |
876 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
877 | int | |
4e022ec0 | 878 | ofproto_port_set_stp(struct ofproto *ofproto, ofp_port_t ofp_port, |
21f7563c JP |
879 | const struct ofproto_port_stp_settings *s) |
880 | { | |
881 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
882 | if (!ofport) { | |
883 | VLOG_WARN("%s: cannot configure STP on nonexistent port %"PRIu16, | |
884 | ofproto->name, ofp_port); | |
885 | return ENODEV; | |
886 | } | |
887 | ||
888 | return (ofproto->ofproto_class->set_stp_port | |
889 | ? ofproto->ofproto_class->set_stp_port(ofport, s) | |
890 | : EOPNOTSUPP); | |
891 | } | |
892 | ||
893 | /* Retrieves STP port status of 'ofp_port' on 'ofproto' and stores it in | |
894 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
895 | * are not meaningful. | |
896 | * | |
897 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
898 | int | |
4e022ec0 | 899 | ofproto_port_get_stp_status(struct ofproto *ofproto, ofp_port_t ofp_port, |
21f7563c JP |
900 | struct ofproto_port_stp_status *s) |
901 | { | |
902 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
903 | if (!ofport) { | |
b0a5c43b JP |
904 | VLOG_WARN_RL(&rl, "%s: cannot get STP status on nonexistent " |
905 | "port %"PRIu16, ofproto->name, ofp_port); | |
21f7563c JP |
906 | return ENODEV; |
907 | } | |
908 | ||
909 | return (ofproto->ofproto_class->get_stp_port_status | |
910 | ? ofproto->ofproto_class->get_stp_port_status(ofport, s) | |
911 | : EOPNOTSUPP); | |
912 | } | |
fd28ce3a JS |
913 | |
914 | /* Retrieves STP port statistics of 'ofp_port' on 'ofproto' and stores it in | |
915 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
916 | * are not meaningful. | |
917 | * | |
918 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
919 | int | |
920 | ofproto_port_get_stp_stats(struct ofproto *ofproto, ofp_port_t ofp_port, | |
921 | struct ofproto_port_stp_stats *s) | |
922 | { | |
923 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
924 | if (!ofport) { | |
925 | VLOG_WARN_RL(&rl, "%s: cannot get STP stats on nonexistent " | |
926 | "port %"PRIu16, ofproto->name, ofp_port); | |
927 | return ENODEV; | |
928 | } | |
929 | ||
930 | return (ofproto->ofproto_class->get_stp_port_stats | |
931 | ? ofproto->ofproto_class->get_stp_port_stats(ofport, s) | |
932 | : EOPNOTSUPP); | |
933 | } | |
9efd308e DV |
934 | |
935 | /* Rapid Spanning Tree Protocol (RSTP) configuration. */ | |
936 | ||
937 | /* Configures RSTP on 'ofproto' using the settings defined in 's'. If | |
938 | * 's' is NULL, disables RSTP. | |
939 | * | |
940 | * Returns 0 if successful, otherwise a positive errno value. */ | |
941 | int | |
942 | ofproto_set_rstp(struct ofproto *ofproto, | |
943 | const struct ofproto_rstp_settings *s) | |
944 | { | |
945 | if (!ofproto->ofproto_class->set_rstp) { | |
946 | return EOPNOTSUPP; | |
947 | } | |
948 | ofproto->ofproto_class->set_rstp(ofproto, s); | |
949 | return 0; | |
950 | } | |
951 | ||
952 | /* Retrieves RSTP status of 'ofproto' and stores it in 's'. If the | |
953 | * 'enabled' member of 's' is false, then the other members are not | |
954 | * meaningful. | |
955 | * | |
956 | * Returns 0 if successful, otherwise a positive errno value. */ | |
957 | int | |
958 | ofproto_get_rstp_status(struct ofproto *ofproto, | |
959 | struct ofproto_rstp_status *s) | |
960 | { | |
961 | if (!ofproto->ofproto_class->get_rstp_status) { | |
962 | return EOPNOTSUPP; | |
963 | } | |
964 | ofproto->ofproto_class->get_rstp_status(ofproto, s); | |
965 | return 0; | |
966 | } | |
967 | ||
968 | /* Configures RSTP on 'ofp_port' of 'ofproto' using the settings defined | |
969 | * in 's'. The caller is responsible for assigning RSTP port numbers | |
970 | * (using the 'port_num' member in the range of 1 through 255, inclusive) | |
971 | * and ensuring there are no duplicates. If the 's' is NULL, then RSTP | |
972 | * is disabled on the port. | |
973 | * | |
974 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
975 | int | |
976 | ofproto_port_set_rstp(struct ofproto *ofproto, ofp_port_t ofp_port, | |
977 | const struct ofproto_port_rstp_settings *s) | |
978 | { | |
979 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
980 | if (!ofport) { | |
981 | VLOG_WARN("%s: cannot configure RSTP on nonexistent port %"PRIu16, | |
982 | ofproto->name, ofp_port); | |
983 | return ENODEV; | |
984 | } | |
985 | ||
986 | if (!ofproto->ofproto_class->set_rstp_port) { | |
987 | return EOPNOTSUPP; | |
988 | } | |
989 | ofproto->ofproto_class->set_rstp_port(ofport, s); | |
990 | return 0; | |
991 | } | |
992 | ||
993 | /* Retrieves RSTP port status of 'ofp_port' on 'ofproto' and stores it in | |
994 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
995 | * are not meaningful. | |
996 | * | |
997 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
998 | int | |
999 | ofproto_port_get_rstp_status(struct ofproto *ofproto, ofp_port_t ofp_port, | |
1000 | struct ofproto_port_rstp_status *s) | |
1001 | { | |
1002 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1003 | if (!ofport) { | |
1004 | VLOG_WARN_RL(&rl, "%s: cannot get RSTP status on nonexistent " | |
1005 | "port %"PRIu16, ofproto->name, ofp_port); | |
1006 | return ENODEV; | |
1007 | } | |
1008 | ||
1009 | if (!ofproto->ofproto_class->get_rstp_port_status) { | |
1010 | return EOPNOTSUPP; | |
1011 | } | |
1012 | ofproto->ofproto_class->get_rstp_port_status(ofport, s); | |
1013 | return 0; | |
1014 | } | |
21f7563c | 1015 | \f |
8b36f51e EJ |
1016 | /* Queue DSCP configuration. */ |
1017 | ||
1018 | /* Registers meta-data associated with the 'n_qdscp' Qualities of Service | |
1019 | * 'queues' attached to 'ofport'. This data is not intended to be sufficient | |
1020 | * to implement QoS. Instead, it is used to implement features which require | |
1021 | * knowledge of what queues exist on a port, and some basic information about | |
1022 | * them. | |
1023 | * | |
1024 | * Returns 0 if successful, otherwise a positive errno value. */ | |
1025 | int | |
4e022ec0 | 1026 | ofproto_port_set_queues(struct ofproto *ofproto, ofp_port_t ofp_port, |
8b36f51e EJ |
1027 | const struct ofproto_port_queue *queues, |
1028 | size_t n_queues) | |
1029 | { | |
1030 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1031 | ||
1032 | if (!ofport) { | |
1033 | VLOG_WARN("%s: cannot set queues on nonexistent port %"PRIu16, | |
1034 | ofproto->name, ofp_port); | |
1035 | return ENODEV; | |
1036 | } | |
1037 | ||
1038 | return (ofproto->ofproto_class->set_queues | |
1039 | ? ofproto->ofproto_class->set_queues(ofport, queues, n_queues) | |
1040 | : EOPNOTSUPP); | |
1041 | } | |
1042 | \f | |
0477baa9 DF |
1043 | /* LLDP configuration. */ |
1044 | void | |
1045 | ofproto_port_set_lldp(struct ofproto *ofproto, | |
1046 | ofp_port_t ofp_port, | |
1047 | const struct smap *cfg) | |
1048 | { | |
1049 | struct ofport *ofport; | |
1050 | int error; | |
1051 | ||
1052 | ofport = ofproto_get_port(ofproto, ofp_port); | |
1053 | if (!ofport) { | |
1054 | VLOG_WARN("%s: cannot configure LLDP on nonexistent port %"PRIu16, | |
1055 | ofproto->name, ofp_port); | |
1056 | return; | |
1057 | } | |
1058 | error = (ofproto->ofproto_class->set_lldp | |
1059 | ? ofproto->ofproto_class->set_lldp(ofport, cfg) | |
1060 | : EOPNOTSUPP); | |
1061 | if (error) { | |
1062 | VLOG_WARN("%s: lldp configuration on port %"PRIu16" (%s) failed (%s)", | |
1063 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
1064 | ovs_strerror(error)); | |
1065 | } | |
1066 | } | |
1067 | ||
1068 | int | |
1069 | ofproto_set_aa(struct ofproto *ofproto, void *aux OVS_UNUSED, | |
1070 | const struct aa_settings *s) | |
1071 | { | |
1072 | if (!ofproto->ofproto_class->set_aa) { | |
1073 | return EOPNOTSUPP; | |
1074 | } | |
1075 | ofproto->ofproto_class->set_aa(ofproto, s); | |
1076 | return 0; | |
1077 | } | |
1078 | ||
1079 | int | |
1080 | ofproto_aa_mapping_register(struct ofproto *ofproto, void *aux, | |
1081 | const struct aa_mapping_settings *s) | |
1082 | { | |
1083 | if (!ofproto->ofproto_class->aa_mapping_set) { | |
1084 | return EOPNOTSUPP; | |
1085 | } | |
1086 | ofproto->ofproto_class->aa_mapping_set(ofproto, aux, s); | |
1087 | return 0; | |
1088 | } | |
1089 | ||
1090 | int | |
1091 | ofproto_aa_mapping_unregister(struct ofproto *ofproto, void *aux) | |
1092 | { | |
1093 | if (!ofproto->ofproto_class->aa_mapping_unset) { | |
1094 | return EOPNOTSUPP; | |
1095 | } | |
1096 | ofproto->ofproto_class->aa_mapping_unset(ofproto, aux); | |
1097 | return 0; | |
1098 | } | |
1099 | ||
1100 | int | |
1101 | ofproto_aa_vlan_get_queued(struct ofproto *ofproto, | |
1102 | struct ovs_list *list) | |
1103 | { | |
1104 | if (!ofproto->ofproto_class->aa_vlan_get_queued) { | |
1105 | return EOPNOTSUPP; | |
1106 | } | |
1107 | ofproto->ofproto_class->aa_vlan_get_queued(ofproto, list); | |
1108 | return 0; | |
1109 | } | |
1110 | ||
1111 | unsigned int | |
1112 | ofproto_aa_vlan_get_queue_size(struct ofproto *ofproto) | |
1113 | { | |
1114 | if (!ofproto->ofproto_class->aa_vlan_get_queue_size) { | |
1115 | return EOPNOTSUPP; | |
1116 | } | |
1117 | return ofproto->ofproto_class->aa_vlan_get_queue_size(ofproto); | |
1118 | } | |
1119 | ||
e7934396 BP |
1120 | /* Connectivity Fault Management configuration. */ |
1121 | ||
892815f5 | 1122 | /* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */ |
e7934396 | 1123 | void |
4e022ec0 | 1124 | ofproto_port_clear_cfm(struct ofproto *ofproto, ofp_port_t ofp_port) |
e7934396 | 1125 | { |
abe529af BP |
1126 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1127 | if (ofport && ofproto->ofproto_class->set_cfm) { | |
a5610457 | 1128 | ofproto->ofproto_class->set_cfm(ofport, NULL); |
e7934396 BP |
1129 | } |
1130 | } | |
72b06300 | 1131 | |
892815f5 | 1132 | /* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes |
93b8df38 EJ |
1133 | * basic configuration from the configuration members in 'cfm', and the remote |
1134 | * maintenance point ID from remote_mpid. Ignores the statistics members of | |
1135 | * 'cfm'. | |
e7934396 | 1136 | * |
892815f5 | 1137 | * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */ |
e7934396 | 1138 | void |
4e022ec0 | 1139 | ofproto_port_set_cfm(struct ofproto *ofproto, ofp_port_t ofp_port, |
a5610457 | 1140 | const struct cfm_settings *s) |
e7934396 BP |
1141 | { |
1142 | struct ofport *ofport; | |
abe529af | 1143 | int error; |
e7934396 | 1144 | |
abe529af | 1145 | ofport = ofproto_get_port(ofproto, ofp_port); |
e7934396 | 1146 | if (!ofport) { |
892815f5 BP |
1147 | VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16, |
1148 | ofproto->name, ofp_port); | |
e7934396 BP |
1149 | return; |
1150 | } | |
1151 | ||
93b8df38 EJ |
1152 | /* XXX: For configuration simplicity, we only support one remote_mpid |
1153 | * outside of the CFM module. It's not clear if this is the correct long | |
1154 | * term solution or not. */ | |
abe529af | 1155 | error = (ofproto->ofproto_class->set_cfm |
a5610457 | 1156 | ? ofproto->ofproto_class->set_cfm(ofport, s) |
abe529af BP |
1157 | : EOPNOTSUPP); |
1158 | if (error) { | |
1159 | VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed (%s)", | |
1160 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
10a89ef0 | 1161 | ovs_strerror(error)); |
e7934396 | 1162 | } |
e7934396 | 1163 | } |
e7934396 | 1164 | |
ccc09689 EJ |
1165 | /* Configures BFD on 'ofp_port' in 'ofproto'. This function has no effect if |
1166 | * 'ofproto' does not have a port 'ofp_port'. */ | |
1167 | void | |
4e022ec0 | 1168 | ofproto_port_set_bfd(struct ofproto *ofproto, ofp_port_t ofp_port, |
ccc09689 EJ |
1169 | const struct smap *cfg) |
1170 | { | |
1171 | struct ofport *ofport; | |
1172 | int error; | |
1173 | ||
1174 | ofport = ofproto_get_port(ofproto, ofp_port); | |
1175 | if (!ofport) { | |
1176 | VLOG_WARN("%s: cannot configure bfd on nonexistent port %"PRIu16, | |
1177 | ofproto->name, ofp_port); | |
e8999bdc | 1178 | return; |
ccc09689 EJ |
1179 | } |
1180 | ||
1181 | error = (ofproto->ofproto_class->set_bfd | |
1182 | ? ofproto->ofproto_class->set_bfd(ofport, cfg) | |
1183 | : EOPNOTSUPP); | |
1184 | if (error) { | |
1185 | VLOG_WARN("%s: bfd configuration on port %"PRIu16" (%s) failed (%s)", | |
1186 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
10a89ef0 | 1187 | ovs_strerror(error)); |
ccc09689 EJ |
1188 | } |
1189 | } | |
1190 | ||
8f5514fe AW |
1191 | /* Checks the status change of BFD on 'ofport'. |
1192 | * | |
1193 | * Returns true if 'ofproto_class' does not support 'bfd_status_changed'. */ | |
1194 | bool | |
1195 | ofproto_port_bfd_status_changed(struct ofproto *ofproto, ofp_port_t ofp_port) | |
1196 | { | |
1197 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1198 | return (ofport && ofproto->ofproto_class->bfd_status_changed | |
1199 | ? ofproto->ofproto_class->bfd_status_changed(ofport) | |
1200 | : true); | |
1201 | } | |
1202 | ||
88bf179a | 1203 | /* Populates 'status' with the status of BFD on 'ofport'. Returns 0 on |
8f5514fe AW |
1204 | * success. Returns a positive errno otherwise. Has no effect if 'ofp_port' |
1205 | * is not an OpenFlow port in 'ofproto'. | |
88bf179a AW |
1206 | * |
1207 | * The caller must provide and own '*status'. */ | |
ccc09689 | 1208 | int |
4e022ec0 | 1209 | ofproto_port_get_bfd_status(struct ofproto *ofproto, ofp_port_t ofp_port, |
ccc09689 EJ |
1210 | struct smap *status) |
1211 | { | |
1212 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1213 | return (ofport && ofproto->ofproto_class->get_bfd_status | |
1214 | ? ofproto->ofproto_class->get_bfd_status(ofport, status) | |
1215 | : EOPNOTSUPP); | |
1216 | } | |
1217 | ||
fa066f01 BP |
1218 | /* Checks the status of LACP negotiation for 'ofp_port' within ofproto. |
1219 | * Returns 1 if LACP partner information for 'ofp_port' is up-to-date, | |
1220 | * 0 if LACP partner information is not current (generally indicating a | |
1221 | * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */ | |
1222 | int | |
4e022ec0 | 1223 | ofproto_port_is_lacp_current(struct ofproto *ofproto, ofp_port_t ofp_port) |
fa066f01 | 1224 | { |
abe529af BP |
1225 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1226 | return (ofport && ofproto->ofproto_class->port_is_lacp_current | |
1227 | ? ofproto->ofproto_class->port_is_lacp_current(ofport) | |
fa066f01 | 1228 | : -1); |
e7934396 | 1229 | } |
50b9699f NM |
1230 | |
1231 | int | |
1232 | ofproto_port_get_lacp_stats(const struct ofport *port, struct lacp_slave_stats *stats) | |
1233 | { | |
1234 | struct ofproto *ofproto = port->ofproto; | |
1235 | int error; | |
1236 | ||
1237 | if (ofproto->ofproto_class->port_get_lacp_stats) { | |
1238 | error = ofproto->ofproto_class->port_get_lacp_stats(port, stats); | |
1239 | } else { | |
1240 | error = EOPNOTSUPP; | |
1241 | } | |
1242 | ||
1243 | return error; | |
1244 | } | |
e7934396 | 1245 | \f |
fa066f01 | 1246 | /* Bundles. */ |
e7934396 | 1247 | |
abe529af BP |
1248 | /* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'. |
1249 | * A bundle is the same concept as a Port in OVSDB, that is, it consists of one | |
1250 | * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN | |
1251 | * configuration plus, if there is more than one slave, a bonding | |
1252 | * configuration. | |
1253 | * | |
1254 | * If 'aux' is already registered then this function updates its configuration | |
1255 | * to 's'. Otherwise, this function registers a new bundle. | |
1256 | * | |
1257 | * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL | |
1258 | * port. */ | |
1259 | int | |
1260 | ofproto_bundle_register(struct ofproto *ofproto, void *aux, | |
1261 | const struct ofproto_bundle_settings *s) | |
fa066f01 | 1262 | { |
abe529af BP |
1263 | return (ofproto->ofproto_class->bundle_set |
1264 | ? ofproto->ofproto_class->bundle_set(ofproto, aux, s) | |
1265 | : EOPNOTSUPP); | |
fa066f01 BP |
1266 | } |
1267 | ||
abe529af BP |
1268 | /* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'. |
1269 | * If no such bundle has been registered, this has no effect. */ | |
1270 | int | |
1271 | ofproto_bundle_unregister(struct ofproto *ofproto, void *aux) | |
e7934396 | 1272 | { |
abe529af | 1273 | return ofproto_bundle_register(ofproto, aux, NULL); |
e7934396 | 1274 | } |
fa066f01 | 1275 | |
e7934396 | 1276 | \f |
abe529af BP |
1277 | /* Registers a mirror associated with client data pointer 'aux' in 'ofproto'. |
1278 | * If 'aux' is already registered then this function updates its configuration | |
c06bba01 | 1279 | * to 's'. Otherwise, this function registers a new mirror. */ |
abe529af BP |
1280 | int |
1281 | ofproto_mirror_register(struct ofproto *ofproto, void *aux, | |
1282 | const struct ofproto_mirror_settings *s) | |
064af421 | 1283 | { |
abe529af BP |
1284 | return (ofproto->ofproto_class->mirror_set |
1285 | ? ofproto->ofproto_class->mirror_set(ofproto, aux, s) | |
1286 | : EOPNOTSUPP); | |
064af421 BP |
1287 | } |
1288 | ||
abe529af BP |
1289 | /* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'. |
1290 | * If no mirror has been registered, this has no effect. */ | |
1291 | int | |
1292 | ofproto_mirror_unregister(struct ofproto *ofproto, void *aux) | |
064af421 | 1293 | { |
abe529af | 1294 | return ofproto_mirror_register(ofproto, aux, NULL); |
064af421 BP |
1295 | } |
1296 | ||
9d24de3b JP |
1297 | /* Retrieves statistics from mirror associated with client data pointer |
1298 | * 'aux' in 'ofproto'. Stores packet and byte counts in 'packets' and | |
1299 | * 'bytes', respectively. If a particular counters is not supported, | |
0477baa9 DF |
1300 | * the appropriate argument is set to UINT64_MAX. |
1301 | */ | |
9d24de3b JP |
1302 | int |
1303 | ofproto_mirror_get_stats(struct ofproto *ofproto, void *aux, | |
1304 | uint64_t *packets, uint64_t *bytes) | |
1305 | { | |
1306 | if (!ofproto->ofproto_class->mirror_get_stats) { | |
1307 | *packets = *bytes = UINT64_MAX; | |
1308 | return EOPNOTSUPP; | |
1309 | } | |
1310 | ||
1311 | return ofproto->ofproto_class->mirror_get_stats(ofproto, aux, | |
1312 | packets, bytes); | |
1313 | } | |
1314 | ||
abe529af BP |
1315 | /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on |
1316 | * which all packets are flooded, instead of using MAC learning. If | |
1317 | * 'flood_vlans' is NULL, then MAC learning applies to all VLANs. | |
1318 | * | |
1319 | * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL | |
1320 | * port. */ | |
1321 | int | |
1322 | ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans) | |
abdfe474 | 1323 | { |
abe529af BP |
1324 | return (ofproto->ofproto_class->set_flood_vlans |
1325 | ? ofproto->ofproto_class->set_flood_vlans(ofproto, flood_vlans) | |
1326 | : EOPNOTSUPP); | |
abdfe474 JP |
1327 | } |
1328 | ||
abe529af BP |
1329 | /* Returns true if 'aux' is a registered bundle that is currently in use as the |
1330 | * output for a mirror. */ | |
1331 | bool | |
b4affc74 | 1332 | ofproto_is_mirror_output_bundle(const struct ofproto *ofproto, void *aux) |
abe529af BP |
1333 | { |
1334 | return (ofproto->ofproto_class->is_mirror_output_bundle | |
1335 | ? ofproto->ofproto_class->is_mirror_output_bundle(ofproto, aux) | |
1336 | : false); | |
1337 | } | |
1338 | \f | |
254750ce BP |
1339 | /* Configuration of OpenFlow tables. */ |
1340 | ||
1341 | /* Returns the number of OpenFlow tables in 'ofproto'. */ | |
1342 | int | |
1343 | ofproto_get_n_tables(const struct ofproto *ofproto) | |
1344 | { | |
1345 | return ofproto->n_tables; | |
1346 | } | |
1347 | ||
adcf00ba AZ |
1348 | /* Returns the number of Controller visible OpenFlow tables |
1349 | * in 'ofproto'. This number will exclude Hidden tables. | |
1350 | * This funtion's return value should be less or equal to that of | |
1351 | * ofproto_get_n_tables() . */ | |
1352 | uint8_t | |
1353 | ofproto_get_n_visible_tables(const struct ofproto *ofproto) | |
1354 | { | |
1355 | uint8_t n = ofproto->n_tables; | |
1356 | ||
1357 | /* Count only non-hidden tables in the number of tables. (Hidden tables, | |
1358 | * if present, are always at the end.) */ | |
1359 | while(n && (ofproto->tables[n - 1].flags & OFTABLE_HIDDEN)) { | |
1360 | n--; | |
1361 | } | |
1362 | ||
1363 | return n; | |
1364 | } | |
1365 | ||
254750ce BP |
1366 | /* Configures the OpenFlow table in 'ofproto' with id 'table_id' with the |
1367 | * settings from 's'. 'table_id' must be in the range 0 through the number of | |
1368 | * OpenFlow tables in 'ofproto' minus 1, inclusive. | |
1369 | * | |
1370 | * For read-only tables, only the name may be configured. */ | |
1371 | void | |
1372 | ofproto_configure_table(struct ofproto *ofproto, int table_id, | |
1373 | const struct ofproto_table_settings *s) | |
1374 | { | |
1375 | struct oftable *table; | |
1376 | ||
cb22974d | 1377 | ovs_assert(table_id >= 0 && table_id < ofproto->n_tables); |
254750ce BP |
1378 | table = &ofproto->tables[table_id]; |
1379 | ||
1380 | oftable_set_name(table, s->name); | |
1381 | ||
1382 | if (table->flags & OFTABLE_READONLY) { | |
1383 | return; | |
1384 | } | |
1385 | ||
1386 | if (s->groups) { | |
1387 | oftable_enable_eviction(table, s->groups, s->n_groups); | |
1388 | } else { | |
1389 | oftable_disable_eviction(table); | |
1390 | } | |
1391 | ||
1392 | table->max_flows = s->max_flows; | |
afae68b1 | 1393 | |
f358a2cb JR |
1394 | if (classifier_set_prefix_fields(&table->cls, |
1395 | s->prefix_fields, s->n_prefix_fields)) { | |
1396 | /* XXX: Trigger revalidation. */ | |
1397 | } | |
834fe5cb BP |
1398 | |
1399 | ovs_mutex_lock(&ofproto_mutex); | |
1400 | evict_rules_from_table(table, 0); | |
1401 | ovs_mutex_unlock(&ofproto_mutex); | |
254750ce BP |
1402 | } |
1403 | \f | |
81e2083f BP |
1404 | bool |
1405 | ofproto_has_snoops(const struct ofproto *ofproto) | |
1406 | { | |
1407 | return connmgr_has_snoops(ofproto->connmgr); | |
1408 | } | |
1409 | ||
064af421 | 1410 | void |
81e2083f | 1411 | ofproto_get_snoops(const struct ofproto *ofproto, struct sset *snoops) |
064af421 | 1412 | { |
19a87e36 | 1413 | connmgr_get_snoops(ofproto->connmgr, snoops); |
064af421 BP |
1414 | } |
1415 | ||
a73fcd71 | 1416 | /* Deletes 'rule' from 'ofproto'. |
8037acb4 | 1417 | * |
b74cb5d8 BP |
1418 | * Within an ofproto implementation, this function allows an ofproto |
1419 | * implementation to destroy any rules that remain when its ->destruct() | |
1420 | * function is called. This function is not suitable for use elsewhere in an | |
1421 | * ofproto implementation. | |
1422 | * | |
b74cb5d8 | 1423 | * This function implements steps 4.4 and 4.5 in the section titled "Rule Life |
8b81d1ef | 1424 | * Cycle" in ofproto-provider.h. */ |
b74cb5d8 | 1425 | void |
8b81d1ef | 1426 | ofproto_rule_delete(struct ofproto *ofproto, struct rule *rule) |
15aaf599 | 1427 | OVS_EXCLUDED(ofproto_mutex) |
7ee20df1 | 1428 | { |
834fe5cb BP |
1429 | /* This skips the ofmonitor and flow-removed notifications because the |
1430 | * switch is being deleted and any OpenFlow channels have been or soon will | |
1431 | * be killed. */ | |
15aaf599 | 1432 | ovs_mutex_lock(&ofproto_mutex); |
802f84ff | 1433 | oftable_remove_rule(rule); |
8037acb4 | 1434 | ofproto->ofproto_class->rule_delete(rule); |
15aaf599 | 1435 | ovs_mutex_unlock(&ofproto_mutex); |
8037acb4 BP |
1436 | } |
1437 | ||
1438 | static void | |
1439 | ofproto_flush__(struct ofproto *ofproto) | |
15aaf599 | 1440 | OVS_EXCLUDED(ofproto_mutex) |
8037acb4 | 1441 | { |
d0918789 | 1442 | struct oftable *table; |
7ee20df1 | 1443 | |
3948503a | 1444 | /* This will flush all datapath flows. */ |
7ee20df1 BP |
1445 | if (ofproto->ofproto_class->flush) { |
1446 | ofproto->ofproto_class->flush(ofproto); | |
1447 | } | |
1448 | ||
3948503a JR |
1449 | /* XXX: There is a small race window here, where new datapath flows can be |
1450 | * created by upcall handlers based on the existing flow table. We can not | |
1451 | * call ofproto class flush while holding 'ofproto_mutex' to prevent this, | |
1452 | * as then we could deadlock on syncing with the handler threads waiting on | |
1453 | * the same mutex. */ | |
1454 | ||
15aaf599 | 1455 | ovs_mutex_lock(&ofproto_mutex); |
b772ded8 | 1456 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
802f84ff | 1457 | struct rule_collection rules; |
78c8df12 | 1458 | struct rule *rule; |
7ee20df1 | 1459 | |
5c67e4af BP |
1460 | if (table->flags & OFTABLE_HIDDEN) { |
1461 | continue; | |
1462 | } | |
1463 | ||
802f84ff JR |
1464 | rule_collection_init(&rules); |
1465 | ||
de4ad4a2 | 1466 | CLS_FOR_EACH (rule, cr, &table->cls) { |
802f84ff | 1467 | rule_collection_add(&rules, rule); |
7ee20df1 | 1468 | } |
802f84ff JR |
1469 | delete_flows__(&rules, OFPRR_DELETE, NULL); |
1470 | rule_collection_destroy(&rules); | |
7ee20df1 | 1471 | } |
3948503a JR |
1472 | /* XXX: Concurrent handler threads may insert new learned flows based on |
1473 | * learn actions of the now deleted flows right after we release | |
1474 | * 'ofproto_mutex'. */ | |
15aaf599 | 1475 | ovs_mutex_unlock(&ofproto_mutex); |
7ee20df1 BP |
1476 | } |
1477 | ||
7395c052 NZ |
1478 | static void delete_group(struct ofproto *ofproto, uint32_t group_id); |
1479 | ||
abe529af BP |
1480 | static void |
1481 | ofproto_destroy__(struct ofproto *ofproto) | |
15aaf599 | 1482 | OVS_EXCLUDED(ofproto_mutex) |
abe529af | 1483 | { |
d0918789 | 1484 | struct oftable *table; |
6c1491fb | 1485 | |
35412852 | 1486 | destroy_rule_executes(ofproto); |
7395c052 | 1487 | delete_group(ofproto, OFPG_ALL); |
5c09b672 GS |
1488 | |
1489 | guarded_list_destroy(&ofproto->rule_executes); | |
7395c052 NZ |
1490 | ovs_rwlock_destroy(&ofproto->groups_rwlock); |
1491 | hmap_destroy(&ofproto->groups); | |
1492 | ||
abe529af BP |
1493 | hmap_remove(&all_ofprotos, &ofproto->hmap_node); |
1494 | free(ofproto->name); | |
955a7127 | 1495 | free(ofproto->type); |
abe529af BP |
1496 | free(ofproto->mfr_desc); |
1497 | free(ofproto->hw_desc); | |
1498 | free(ofproto->sw_desc); | |
1499 | free(ofproto->serial_desc); | |
1500 | free(ofproto->dp_desc); | |
abe529af | 1501 | hmap_destroy(&ofproto->ports); |
fdcea803 | 1502 | hmap_destroy(&ofproto->ofport_usage); |
abe529af | 1503 | shash_destroy(&ofproto->port_by_name); |
e1b1d06a | 1504 | simap_destroy(&ofproto->ofp_requests); |
6c1491fb | 1505 | |
b772ded8 | 1506 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
d0918789 | 1507 | oftable_destroy(table); |
6c1491fb BP |
1508 | } |
1509 | free(ofproto->tables); | |
fa066f01 | 1510 | |
1406c79b BP |
1511 | ovs_assert(hindex_is_empty(&ofproto->cookies)); |
1512 | hindex_destroy(&ofproto->cookies); | |
1513 | ||
35f48b8b BP |
1514 | ovs_assert(hmap_is_empty(&ofproto->learned_cookies)); |
1515 | hmap_destroy(&ofproto->learned_cookies); | |
1516 | ||
52a90c29 BP |
1517 | free(ofproto->vlan_bitmap); |
1518 | ||
abe529af BP |
1519 | ofproto->ofproto_class->dealloc(ofproto); |
1520 | } | |
fa066f01 | 1521 | |
064af421 BP |
1522 | void |
1523 | ofproto_destroy(struct ofproto *p) | |
15aaf599 | 1524 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 1525 | { |
ca0f572c | 1526 | struct ofport *ofport, *next_ofport; |
fdcea803 | 1527 | struct ofport_usage *usage, *next_usage; |
064af421 BP |
1528 | |
1529 | if (!p) { | |
1530 | return; | |
1531 | } | |
1532 | ||
717de9ff JR |
1533 | if (p->meters) { |
1534 | meter_delete(p, 1, p->meter_features.max_meters); | |
1535 | p->meter_features.max_meters = 0; | |
1536 | free(p->meters); | |
1537 | p->meters = NULL; | |
1538 | } | |
1539 | ||
7ee20df1 | 1540 | ofproto_flush__(p); |
4e8e4213 | 1541 | HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) { |
abe529af | 1542 | ofport_destroy(ofport); |
064af421 | 1543 | } |
064af421 | 1544 | |
fdcea803 GS |
1545 | HMAP_FOR_EACH_SAFE (usage, next_usage, hmap_node, &p->ofport_usage) { |
1546 | hmap_remove(&p->ofport_usage, &usage->hmap_node); | |
1547 | free(usage); | |
1548 | } | |
1549 | ||
abe529af | 1550 | p->ofproto_class->destruct(p); |
58f19539 DDP |
1551 | |
1552 | /* We should not postpone this because it involves deleting a listening | |
1553 | * socket which we may want to reopen soon. 'connmgr' should not be used | |
1554 | * by other threads */ | |
1555 | connmgr_destroy(p->connmgr); | |
1556 | ||
f416c8d6 JR |
1557 | /* Destroying rules is deferred, must have 'ofproto' around for them. */ |
1558 | ovsrcu_postpone(ofproto_destroy__, p); | |
064af421 BP |
1559 | } |
1560 | ||
abe529af BP |
1561 | /* Destroys the datapath with the respective 'name' and 'type'. With the Linux |
1562 | * kernel datapath, for example, this destroys the datapath in the kernel, and | |
1563 | * with the netdev-based datapath, it tears down the data structures that | |
1564 | * represent the datapath. | |
1565 | * | |
1566 | * The datapath should not be currently open as an ofproto. */ | |
064af421 | 1567 | int |
abe529af | 1568 | ofproto_delete(const char *name, const char *type) |
064af421 | 1569 | { |
abe529af BP |
1570 | const struct ofproto_class *class = ofproto_class_find__(type); |
1571 | return (!class ? EAFNOSUPPORT | |
1572 | : !class->del ? EACCES | |
1573 | : class->del(type, name)); | |
064af421 BP |
1574 | } |
1575 | ||
e9e28be3 BP |
1576 | static void |
1577 | process_port_change(struct ofproto *ofproto, int error, char *devname) | |
1578 | { | |
1579 | if (error == ENOBUFS) { | |
1580 | reinit_ports(ofproto); | |
1581 | } else if (!error) { | |
1582 | update_port(ofproto, devname); | |
1583 | free(devname); | |
1584 | } | |
1585 | } | |
1586 | ||
11a574a7 JP |
1587 | int |
1588 | ofproto_type_run(const char *datapath_type) | |
1589 | { | |
1590 | const struct ofproto_class *class; | |
1591 | int error; | |
1592 | ||
1593 | datapath_type = ofproto_normalize_type(datapath_type); | |
1594 | class = ofproto_class_find__(datapath_type); | |
1595 | ||
1596 | error = class->type_run ? class->type_run(datapath_type) : 0; | |
1597 | if (error && error != EAGAIN) { | |
1598 | VLOG_ERR_RL(&rl, "%s: type_run failed (%s)", | |
10a89ef0 | 1599 | datapath_type, ovs_strerror(error)); |
11a574a7 JP |
1600 | } |
1601 | return error; | |
1602 | } | |
1603 | ||
11a574a7 JP |
1604 | void |
1605 | ofproto_type_wait(const char *datapath_type) | |
1606 | { | |
1607 | const struct ofproto_class *class; | |
1608 | ||
1609 | datapath_type = ofproto_normalize_type(datapath_type); | |
1610 | class = ofproto_class_find__(datapath_type); | |
1611 | ||
1612 | if (class->type_wait) { | |
1613 | class->type_wait(datapath_type); | |
1614 | } | |
1615 | } | |
1616 | ||
064af421 | 1617 | int |
abe529af | 1618 | ofproto_run(struct ofproto *p) |
064af421 | 1619 | { |
064af421 | 1620 | int error; |
da4a6191 | 1621 | uint64_t new_seq; |
064af421 | 1622 | |
abe529af | 1623 | error = p->ofproto_class->run(p); |
5fcc0d00 | 1624 | if (error && error != EAGAIN) { |
10a89ef0 | 1625 | VLOG_ERR_RL(&rl, "%s: run failed (%s)", p->name, ovs_strerror(error)); |
149f577a JG |
1626 | } |
1627 | ||
35412852 BP |
1628 | run_rule_executes(p); |
1629 | ||
448c2fa8 EJ |
1630 | /* Restore the eviction group heap invariant occasionally. */ |
1631 | if (p->eviction_group_timer < time_msec()) { | |
1632 | size_t i; | |
1633 | ||
1634 | p->eviction_group_timer = time_msec() + 1000; | |
1635 | ||
1636 | for (i = 0; i < p->n_tables; i++) { | |
1637 | struct oftable *table = &p->tables[i]; | |
1638 | struct eviction_group *evg; | |
448c2fa8 EJ |
1639 | struct rule *rule; |
1640 | ||
1641 | if (!table->eviction_fields) { | |
1642 | continue; | |
1643 | } | |
1644 | ||
1a9bb326 EJ |
1645 | if (classifier_count(&table->cls) > 100000) { |
1646 | static struct vlog_rate_limit count_rl = | |
1647 | VLOG_RATE_LIMIT_INIT(1, 1); | |
1648 | VLOG_WARN_RL(&count_rl, "Table %"PRIuSIZE" has an excessive" | |
1649 | " number of rules: %d", i, | |
1650 | classifier_count(&table->cls)); | |
1651 | } | |
1652 | ||
15aaf599 | 1653 | ovs_mutex_lock(&ofproto_mutex); |
5f0476ce | 1654 | CLS_FOR_EACH (rule, cr, &table->cls) { |
6d56c1f1 K |
1655 | if (rule->idle_timeout || rule->hard_timeout) { |
1656 | if (!rule->eviction_group) { | |
1657 | eviction_group_add_rule(rule); | |
1658 | } else { | |
1659 | heap_raw_change(&rule->evg_node, | |
1660 | rule_eviction_priority(p, rule)); | |
1661 | } | |
448c2fa8 EJ |
1662 | } |
1663 | } | |
6d56c1f1 K |
1664 | |
1665 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { | |
1666 | heap_rebuild(&evg->rules); | |
1667 | } | |
15aaf599 | 1668 | ovs_mutex_unlock(&ofproto_mutex); |
448c2fa8 EJ |
1669 | } |
1670 | } | |
1671 | ||
5bf0e941 | 1672 | if (p->ofproto_class->port_poll) { |
7436ed80 BP |
1673 | char *devname; |
1674 | ||
5bf0e941 BP |
1675 | while ((error = p->ofproto_class->port_poll(p, &devname)) != EAGAIN) { |
1676 | process_port_change(p, error, devname); | |
064af421 | 1677 | } |
e9e28be3 | 1678 | } |
031d8bff | 1679 | |
da4a6191 JS |
1680 | new_seq = seq_read(connectivity_seq_get()); |
1681 | if (new_seq != p->change_seq) { | |
1682 | struct sset devnames; | |
1683 | const char *devname; | |
1684 | struct ofport *ofport; | |
1685 | ||
1686 | /* Update OpenFlow port status for any port whose netdev has changed. | |
1687 | * | |
1688 | * Refreshing a given 'ofport' can cause an arbitrary ofport to be | |
1689 | * destroyed, so it's not safe to update ports directly from the | |
1690 | * HMAP_FOR_EACH loop, or even to use HMAP_FOR_EACH_SAFE. Instead, we | |
1691 | * need this two-phase approach. */ | |
1692 | sset_init(&devnames); | |
1693 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
61501798 AW |
1694 | uint64_t port_change_seq; |
1695 | ||
1696 | port_change_seq = netdev_get_change_seq(ofport->netdev); | |
1697 | if (ofport->change_seq != port_change_seq) { | |
1698 | ofport->change_seq = port_change_seq; | |
1699 | sset_add(&devnames, netdev_get_name(ofport->netdev)); | |
1700 | } | |
031d8bff | 1701 | } |
da4a6191 JS |
1702 | SSET_FOR_EACH (devname, &devnames) { |
1703 | update_port(p, devname); | |
1704 | } | |
1705 | sset_destroy(&devnames); | |
1706 | ||
1707 | p->change_seq = new_seq; | |
064af421 BP |
1708 | } |
1709 | ||
834fe5cb | 1710 | connmgr_run(p->connmgr, handle_openflow); |
064af421 | 1711 | |
5fcc0d00 BP |
1712 | return error; |
1713 | } | |
1714 | ||
064af421 BP |
1715 | void |
1716 | ofproto_wait(struct ofproto *p) | |
1717 | { | |
abe529af | 1718 | p->ofproto_class->wait(p); |
5bf0e941 BP |
1719 | if (p->ofproto_class->port_poll_wait) { |
1720 | p->ofproto_class->port_poll_wait(p); | |
e7934396 | 1721 | } |
da4a6191 | 1722 | seq_wait(connectivity_seq_get(), p->change_seq); |
834fe5cb | 1723 | connmgr_wait(p->connmgr); |
064af421 BP |
1724 | } |
1725 | ||
064af421 BP |
1726 | bool |
1727 | ofproto_is_alive(const struct ofproto *p) | |
1728 | { | |
19a87e36 | 1729 | return connmgr_has_controllers(p->connmgr); |
064af421 BP |
1730 | } |
1731 | ||
0d085684 BP |
1732 | /* Adds some memory usage statistics for 'ofproto' into 'usage', for use with |
1733 | * memory_report(). */ | |
1734 | void | |
1735 | ofproto_get_memory_usage(const struct ofproto *ofproto, struct simap *usage) | |
1736 | { | |
1737 | const struct oftable *table; | |
1738 | unsigned int n_rules; | |
1739 | ||
1740 | simap_increase(usage, "ports", hmap_count(&ofproto->ports)); | |
15aaf599 | 1741 | |
0d085684 BP |
1742 | n_rules = 0; |
1743 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
1744 | n_rules += classifier_count(&table->cls); | |
1745 | } | |
1746 | simap_increase(usage, "rules", n_rules); | |
1747 | ||
1748 | if (ofproto->ofproto_class->get_memory_usage) { | |
1749 | ofproto->ofproto_class->get_memory_usage(ofproto, usage); | |
1750 | } | |
1751 | ||
1752 | connmgr_get_memory_usage(ofproto->connmgr, usage); | |
1753 | } | |
1754 | ||
1c030aa5 EJ |
1755 | void |
1756 | ofproto_type_get_memory_usage(const char *datapath_type, struct simap *usage) | |
1757 | { | |
1758 | const struct ofproto_class *class; | |
1759 | ||
1760 | datapath_type = ofproto_normalize_type(datapath_type); | |
1761 | class = ofproto_class_find__(datapath_type); | |
1762 | ||
1763 | if (class && class->type_get_memory_usage) { | |
1764 | class->type_get_memory_usage(datapath_type, usage); | |
1765 | } | |
1766 | } | |
1767 | ||
bffc0589 | 1768 | void |
2cdcb898 | 1769 | ofproto_get_ofproto_controller_info(const struct ofproto *ofproto, |
bffc0589 AE |
1770 | struct shash *info) |
1771 | { | |
19a87e36 | 1772 | connmgr_get_controller_info(ofproto->connmgr, info); |
bffc0589 AE |
1773 | } |
1774 | ||
1775 | void | |
1776 | ofproto_free_ofproto_controller_info(struct shash *info) | |
1777 | { | |
72ba2ed3 | 1778 | connmgr_free_controller_info(info); |
bffc0589 AE |
1779 | } |
1780 | ||
b5827b24 BP |
1781 | /* Makes a deep copy of 'old' into 'port'. */ |
1782 | void | |
1783 | ofproto_port_clone(struct ofproto_port *port, const struct ofproto_port *old) | |
1784 | { | |
1785 | port->name = xstrdup(old->name); | |
1786 | port->type = xstrdup(old->type); | |
1787 | port->ofp_port = old->ofp_port; | |
1788 | } | |
1789 | ||
1790 | /* Frees memory allocated to members of 'ofproto_port'. | |
3a6ccc8c | 1791 | * |
b5827b24 BP |
1792 | * Do not call this function on an ofproto_port obtained from |
1793 | * ofproto_port_dump_next(): that function retains ownership of the data in the | |
1794 | * ofproto_port. */ | |
1795 | void | |
1796 | ofproto_port_destroy(struct ofproto_port *ofproto_port) | |
1797 | { | |
1798 | free(ofproto_port->name); | |
1799 | free(ofproto_port->type); | |
1800 | } | |
1801 | ||
b5827b24 | 1802 | /* Initializes 'dump' to begin dumping the ports in an ofproto. |
3a6ccc8c | 1803 | * |
b5827b24 BP |
1804 | * This function provides no status indication. An error status for the entire |
1805 | * dump operation is provided when it is completed by calling | |
1806 | * ofproto_port_dump_done(). | |
1807 | */ | |
1808 | void | |
1809 | ofproto_port_dump_start(struct ofproto_port_dump *dump, | |
1810 | const struct ofproto *ofproto) | |
1811 | { | |
abe529af BP |
1812 | dump->ofproto = ofproto; |
1813 | dump->error = ofproto->ofproto_class->port_dump_start(ofproto, | |
1814 | &dump->state); | |
b5827b24 BP |
1815 | } |
1816 | ||
1817 | /* Attempts to retrieve another port from 'dump', which must have been created | |
1818 | * with ofproto_port_dump_start(). On success, stores a new ofproto_port into | |
1819 | * 'port' and returns true. On failure, returns false. | |
1820 | * | |
1821 | * Failure might indicate an actual error or merely that the last port has been | |
1822 | * dumped. An error status for the entire dump operation is provided when it | |
1823 | * is completed by calling ofproto_port_dump_done(). | |
1824 | * | |
1825 | * The ofproto owns the data stored in 'port'. It will remain valid until at | |
1826 | * least the next time 'dump' is passed to ofproto_port_dump_next() or | |
1827 | * ofproto_port_dump_done(). */ | |
1828 | bool | |
1829 | ofproto_port_dump_next(struct ofproto_port_dump *dump, | |
1830 | struct ofproto_port *port) | |
1831 | { | |
abe529af BP |
1832 | const struct ofproto *ofproto = dump->ofproto; |
1833 | ||
1834 | if (dump->error) { | |
1835 | return false; | |
1836 | } | |
b5827b24 | 1837 | |
abe529af BP |
1838 | dump->error = ofproto->ofproto_class->port_dump_next(ofproto, dump->state, |
1839 | port); | |
1840 | if (dump->error) { | |
1841 | ofproto->ofproto_class->port_dump_done(ofproto, dump->state); | |
1842 | return false; | |
b5827b24 | 1843 | } |
abe529af | 1844 | return true; |
b5827b24 BP |
1845 | } |
1846 | ||
1847 | /* Completes port table dump operation 'dump', which must have been created | |
1848 | * with ofproto_port_dump_start(). Returns 0 if the dump operation was | |
1849 | * error-free, otherwise a positive errno value describing the problem. */ | |
3a6ccc8c | 1850 | int |
b5827b24 | 1851 | ofproto_port_dump_done(struct ofproto_port_dump *dump) |
3a6ccc8c | 1852 | { |
abe529af BP |
1853 | const struct ofproto *ofproto = dump->ofproto; |
1854 | if (!dump->error) { | |
1855 | dump->error = ofproto->ofproto_class->port_dump_done(ofproto, | |
1856 | dump->state); | |
1857 | } | |
1858 | return dump->error == EOF ? 0 : dump->error; | |
b5827b24 BP |
1859 | } |
1860 | ||
0aeaabc8 JP |
1861 | /* Returns the type to pass to netdev_open() when a datapath of type |
1862 | * 'datapath_type' has a port of type 'port_type', for a few special | |
1863 | * cases when a netdev type differs from a port type. For example, when | |
1864 | * using the userspace datapath, a port of type "internal" needs to be | |
1865 | * opened as "tap". | |
1866 | * | |
1867 | * Returns either 'type' itself or a string literal, which must not be | |
1868 | * freed. */ | |
1869 | const char * | |
1870 | ofproto_port_open_type(const char *datapath_type, const char *port_type) | |
1871 | { | |
1872 | const struct ofproto_class *class; | |
1873 | ||
1874 | datapath_type = ofproto_normalize_type(datapath_type); | |
1875 | class = ofproto_class_find__(datapath_type); | |
1876 | if (!class) { | |
1877 | return port_type; | |
1878 | } | |
1879 | ||
1880 | return (class->port_open_type | |
1881 | ? class->port_open_type(datapath_type, port_type) | |
1882 | : port_type); | |
1883 | } | |
1884 | ||
81816a5f JP |
1885 | /* Attempts to add 'netdev' as a port on 'ofproto'. If 'ofp_portp' is |
1886 | * non-null and '*ofp_portp' is not OFPP_NONE, attempts to use that as | |
1887 | * the port's OpenFlow port number. | |
1888 | * | |
1889 | * If successful, returns 0 and sets '*ofp_portp' to the new port's | |
1890 | * OpenFlow port number (if 'ofp_portp' is non-null). On failure, | |
1891 | * returns a positive errno value and sets '*ofp_portp' to OFPP_NONE (if | |
1892 | * 'ofp_portp' is non-null). */ | |
b5827b24 BP |
1893 | int |
1894 | ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev, | |
4e022ec0 | 1895 | ofp_port_t *ofp_portp) |
b5827b24 | 1896 | { |
4e022ec0 | 1897 | ofp_port_t ofp_port = ofp_portp ? *ofp_portp : OFPP_NONE; |
3a6ccc8c BP |
1898 | int error; |
1899 | ||
e1b1d06a | 1900 | error = ofproto->ofproto_class->port_add(ofproto, netdev); |
1fa24dea | 1901 | if (!error) { |
e1b1d06a JP |
1902 | const char *netdev_name = netdev_get_name(netdev); |
1903 | ||
4e022ec0 AW |
1904 | simap_put(&ofproto->ofp_requests, netdev_name, |
1905 | ofp_to_u16(ofp_port)); | |
e1b1d06a | 1906 | update_port(ofproto, netdev_name); |
1fa24dea | 1907 | } |
b5827b24 | 1908 | if (ofp_portp) { |
17f69db5 BP |
1909 | *ofp_portp = OFPP_NONE; |
1910 | if (!error) { | |
1911 | struct ofproto_port ofproto_port; | |
1912 | ||
1913 | error = ofproto_port_query_by_name(ofproto, | |
1914 | netdev_get_name(netdev), | |
1915 | &ofproto_port); | |
1916 | if (!error) { | |
1917 | *ofp_portp = ofproto_port.ofp_port; | |
1918 | ofproto_port_destroy(&ofproto_port); | |
1919 | } | |
1920 | } | |
3a6ccc8c BP |
1921 | } |
1922 | return error; | |
1923 | } | |
1924 | ||
b5827b24 BP |
1925 | /* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and |
1926 | * initializes '*port' appropriately; on failure, returns a positive errno | |
1927 | * value. | |
1928 | * | |
abe529af | 1929 | * The caller owns the data in 'ofproto_port' and must free it with |
b5827b24 BP |
1930 | * ofproto_port_destroy() when it is no longer needed. */ |
1931 | int | |
1932 | ofproto_port_query_by_name(const struct ofproto *ofproto, const char *devname, | |
1933 | struct ofproto_port *port) | |
a4e2e1f2 | 1934 | { |
b5827b24 BP |
1935 | int error; |
1936 | ||
abe529af BP |
1937 | error = ofproto->ofproto_class->port_query_by_name(ofproto, devname, port); |
1938 | if (error) { | |
1939 | memset(port, 0, sizeof *port); | |
b5827b24 BP |
1940 | } |
1941 | return error; | |
a4e2e1f2 EJ |
1942 | } |
1943 | ||
b5827b24 | 1944 | /* Deletes port number 'ofp_port' from the datapath for 'ofproto'. |
3a6ccc8c | 1945 | * Returns 0 if successful, otherwise a positive errno. */ |
064af421 | 1946 | int |
4e022ec0 | 1947 | ofproto_port_del(struct ofproto *ofproto, ofp_port_t ofp_port) |
064af421 | 1948 | { |
abe529af | 1949 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1264ec95 | 1950 | const char *name = ofport ? netdev_get_name(ofport->netdev) : "<unknown>"; |
e1b1d06a | 1951 | struct simap_node *ofp_request_node; |
3cf10406 | 1952 | int error; |
cdee00fd | 1953 | |
e1b1d06a JP |
1954 | ofp_request_node = simap_find(&ofproto->ofp_requests, name); |
1955 | if (ofp_request_node) { | |
1956 | simap_delete(&ofproto->ofp_requests, ofp_request_node); | |
1957 | } | |
1958 | ||
abe529af | 1959 | error = ofproto->ofproto_class->port_del(ofproto, ofp_port); |
892815f5 | 1960 | if (!error && ofport) { |
1264ec95 BP |
1961 | /* 'name' is the netdev's name and update_port() is going to close the |
1962 | * netdev. Just in case update_port() refers to 'name' after it | |
3a6ccc8c BP |
1963 | * destroys 'ofport', make a copy of it around the update_port() |
1964 | * call. */ | |
1965 | char *devname = xstrdup(name); | |
1966 | update_port(ofproto, devname); | |
1967 | free(devname); | |
3cf10406 BP |
1968 | } |
1969 | return error; | |
064af421 BP |
1970 | } |
1971 | ||
276f6518 SH |
1972 | static void |
1973 | flow_mod_init(struct ofputil_flow_mod *fm, | |
eb391b76 | 1974 | const struct match *match, int priority, |
276f6518 SH |
1975 | const struct ofpact *ofpacts, size_t ofpacts_len, |
1976 | enum ofp_flow_mod_command command) | |
1977 | { | |
1978 | memset(fm, 0, sizeof *fm); | |
1979 | fm->match = *match; | |
1980 | fm->priority = priority; | |
1981 | fm->cookie = 0; | |
1982 | fm->new_cookie = 0; | |
1983 | fm->modify_cookie = false; | |
1984 | fm->table_id = 0; | |
1985 | fm->command = command; | |
1986 | fm->idle_timeout = 0; | |
1987 | fm->hard_timeout = 0; | |
ca26eb44 | 1988 | fm->importance = 0; |
276f6518 SH |
1989 | fm->buffer_id = UINT32_MAX; |
1990 | fm->out_port = OFPP_ANY; | |
1991 | fm->out_group = OFPG_ANY; | |
1992 | fm->flags = 0; | |
1993 | fm->ofpacts = CONST_CAST(struct ofpact *, ofpacts); | |
1994 | fm->ofpacts_len = ofpacts_len; | |
cc40d06b | 1995 | fm->delete_reason = OFPRR_DELETE; |
276f6518 SH |
1996 | } |
1997 | ||
97f63e57 BP |
1998 | static int |
1999 | simple_flow_mod(struct ofproto *ofproto, | |
eb391b76 | 2000 | const struct match *match, int priority, |
97f63e57 BP |
2001 | const struct ofpact *ofpacts, size_t ofpacts_len, |
2002 | enum ofp_flow_mod_command command) | |
2003 | { | |
2004 | struct ofputil_flow_mod fm; | |
2005 | ||
276f6518 | 2006 | flow_mod_init(&fm, match, priority, ofpacts, ofpacts_len, command); |
15aaf599 | 2007 | |
baae3d02 | 2008 | return handle_flow_mod__(ofproto, &fm, NULL); |
97f63e57 BP |
2009 | } |
2010 | ||
6c1491fb | 2011 | /* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and |
fa8b054f BP |
2012 | * performs the 'n_actions' actions in 'actions'. The new flow will not |
2013 | * timeout. | |
2014 | * | |
2015 | * If cls_rule->priority is in the range of priorities supported by OpenFlow | |
2016 | * (0...65535, inclusive) then the flow will be visible to OpenFlow | |
2017 | * controllers; otherwise, it will be hidden. | |
2018 | * | |
f25d0cf3 | 2019 | * The caller retains ownership of 'cls_rule' and 'ofpacts'. |
6c1491fb BP |
2020 | * |
2021 | * This is a helper function for in-band control and fail-open. */ | |
064af421 | 2022 | void |
81a76618 | 2023 | ofproto_add_flow(struct ofproto *ofproto, const struct match *match, |
eb391b76 | 2024 | int priority, |
f25d0cf3 | 2025 | const struct ofpact *ofpacts, size_t ofpacts_len) |
15aaf599 | 2026 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 2027 | { |
7ee20df1 | 2028 | const struct rule *rule; |
6f00e29b | 2029 | bool must_add; |
7ee20df1 | 2030 | |
97f63e57 BP |
2031 | /* First do a cheap check whether the rule we're looking for already exists |
2032 | * with the actions that we want. If it does, then we're done. */ | |
81a76618 BP |
2033 | rule = rule_from_cls_rule(classifier_find_match_exactly( |
2034 | &ofproto->tables[0].cls, match, priority)); | |
6f00e29b | 2035 | if (rule) { |
dc723c44 | 2036 | const struct rule_actions *actions = rule_get_actions(rule); |
06a0f3e2 | 2037 | must_add = !ofpacts_equal(actions->ofpacts, actions->ofpacts_len, |
6f00e29b | 2038 | ofpacts, ofpacts_len); |
6f00e29b BP |
2039 | } else { |
2040 | must_add = true; | |
2041 | } | |
97f63e57 BP |
2042 | |
2043 | /* If there's no such rule or the rule doesn't have the actions we want, | |
2044 | * fall back to a executing a full flow mod. We can't optimize this at | |
2045 | * all because we didn't take enough locks above to ensure that the flow | |
2046 | * table didn't already change beneath us. */ | |
6f00e29b | 2047 | if (must_add) { |
97f63e57 BP |
2048 | simple_flow_mod(ofproto, match, priority, ofpacts, ofpacts_len, |
2049 | OFPFC_MODIFY_STRICT); | |
7ee20df1 | 2050 | } |
064af421 BP |
2051 | } |
2052 | ||
75a75043 | 2053 | /* Executes the flow modification specified in 'fm'. Returns 0 on success, an |
90bf1e07 BP |
2054 | * OFPERR_* OpenFlow error code on failure, or OFPROTO_POSTPONE if the |
2055 | * operation cannot be initiated now but may be retried later. | |
75a75043 | 2056 | * |
1b63b91e BP |
2057 | * This is a helper function for in-band control and fail-open and the "learn" |
2058 | * action. */ | |
75a75043 | 2059 | int |
e3b56933 | 2060 | ofproto_flow_mod(struct ofproto *ofproto, struct ofputil_flow_mod *fm) |
15aaf599 | 2061 | OVS_EXCLUDED(ofproto_mutex) |
75a75043 | 2062 | { |
b90d6ee5 JR |
2063 | /* Optimize for the most common case of a repeated learn action. |
2064 | * If an identical flow already exists we only need to update its | |
2065 | * 'modified' time. */ | |
2066 | if (fm->command == OFPFC_MODIFY_STRICT && fm->table_id != OFPTT_ALL | |
2067 | && !(fm->flags & OFPUTIL_FF_RESET_COUNTS)) { | |
2068 | struct oftable *table = &ofproto->tables[fm->table_id]; | |
b90d6ee5 JR |
2069 | struct rule *rule; |
2070 | bool done = false; | |
2071 | ||
0ef165ec EJ |
2072 | rule = rule_from_cls_rule(classifier_find_match_exactly(&table->cls, |
2073 | &fm->match, | |
2074 | fm->priority)); | |
b90d6ee5 JR |
2075 | if (rule) { |
2076 | /* Reading many of the rule fields and writing on 'modified' | |
2077 | * requires the rule->mutex. Also, rule->actions may change | |
2078 | * if rule->mutex is not held. */ | |
06a0f3e2 BP |
2079 | const struct rule_actions *actions; |
2080 | ||
b90d6ee5 | 2081 | ovs_mutex_lock(&rule->mutex); |
06a0f3e2 | 2082 | actions = rule_get_actions(rule); |
b90d6ee5 JR |
2083 | if (rule->idle_timeout == fm->idle_timeout |
2084 | && rule->hard_timeout == fm->hard_timeout | |
ca26eb44 | 2085 | && rule->importance == fm->importance |
b90d6ee5 JR |
2086 | && rule->flags == (fm->flags & OFPUTIL_FF_STATE) |
2087 | && (!fm->modify_cookie || (fm->new_cookie == rule->flow_cookie)) | |
2088 | && ofpacts_equal(fm->ofpacts, fm->ofpacts_len, | |
06a0f3e2 | 2089 | actions->ofpacts, actions->ofpacts_len)) { |
b90d6ee5 JR |
2090 | /* Rule already exists and need not change, only update the |
2091 | modified timestamp. */ | |
2092 | rule->modified = time_msec(); | |
2093 | done = true; | |
2094 | } | |
2095 | ovs_mutex_unlock(&rule->mutex); | |
2096 | } | |
b90d6ee5 JR |
2097 | |
2098 | if (done) { | |
2099 | return 0; | |
2100 | } | |
2101 | } | |
2102 | ||
baae3d02 | 2103 | return handle_flow_mod__(ofproto, fm, NULL); |
75a75043 BP |
2104 | } |
2105 | ||
6c1491fb BP |
2106 | /* Searches for a rule with matching criteria exactly equal to 'target' in |
2107 | * ofproto's table 0 and, if it finds one, deletes it. | |
2108 | * | |
2109 | * This is a helper function for in-band control and fail-open. */ | |
b20f4073 | 2110 | void |
81a76618 | 2111 | ofproto_delete_flow(struct ofproto *ofproto, |
eb391b76 | 2112 | const struct match *target, int priority) |
15aaf599 | 2113 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 2114 | { |
8037acb4 | 2115 | struct classifier *cls = &ofproto->tables[0].cls; |
064af421 BP |
2116 | struct rule *rule; |
2117 | ||
97f63e57 BP |
2118 | /* First do a cheap check whether the rule we're looking for has already |
2119 | * been deleted. If so, then we're done. */ | |
8037acb4 BP |
2120 | rule = rule_from_cls_rule(classifier_find_match_exactly(cls, target, |
2121 | priority)); | |
834fe5cb BP |
2122 | if (!rule) { |
2123 | return; | |
bcf84111 | 2124 | } |
834fe5cb BP |
2125 | |
2126 | /* Execute a flow mod. We can't optimize this at all because we didn't | |
2127 | * take enough locks above to ensure that the flow table didn't already | |
2128 | * change beneath us. */ | |
2129 | simple_flow_mod(ofproto, target, priority, NULL, 0, OFPFC_DELETE_STRICT); | |
142e1f5c BP |
2130 | } |
2131 | ||
834fe5cb BP |
2132 | /* Delete all of the flows from all of ofproto's flow tables, then reintroduce |
2133 | * the flows required by in-band control and fail-open. */ | |
142e1f5c BP |
2134 | void |
2135 | ofproto_flush_flows(struct ofproto *ofproto) | |
2136 | { | |
7ee20df1 | 2137 | COVERAGE_INC(ofproto_flush); |
834fe5cb BP |
2138 | ofproto_flush__(ofproto); |
2139 | connmgr_flushed(ofproto->connmgr); | |
064af421 BP |
2140 | } |
2141 | \f | |
2142 | static void | |
2143 | reinit_ports(struct ofproto *p) | |
2144 | { | |
abe529af | 2145 | struct ofproto_port_dump dump; |
b3c01ed3 | 2146 | struct sset devnames; |
064af421 | 2147 | struct ofport *ofport; |
abe529af | 2148 | struct ofproto_port ofproto_port; |
b3c01ed3 | 2149 | const char *devname; |
064af421 | 2150 | |
898bf89d JP |
2151 | COVERAGE_INC(ofproto_reinit_ports); |
2152 | ||
b3c01ed3 | 2153 | sset_init(&devnames); |
4e8e4213 | 2154 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { |
1264ec95 | 2155 | sset_add(&devnames, netdev_get_name(ofport->netdev)); |
064af421 | 2156 | } |
abe529af BP |
2157 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { |
2158 | sset_add(&devnames, ofproto_port.name); | |
064af421 | 2159 | } |
064af421 | 2160 | |
b3c01ed3 BP |
2161 | SSET_FOR_EACH (devname, &devnames) { |
2162 | update_port(p, devname); | |
064af421 | 2163 | } |
b3c01ed3 | 2164 | sset_destroy(&devnames); |
064af421 BP |
2165 | } |
2166 | ||
4e022ec0 | 2167 | static ofp_port_t |
e1b1d06a JP |
2168 | alloc_ofp_port(struct ofproto *ofproto, const char *netdev_name) |
2169 | { | |
4e022ec0 | 2170 | uint16_t port_idx; |
e1b1d06a | 2171 | |
4e022ec0 | 2172 | port_idx = simap_get(&ofproto->ofp_requests, netdev_name); |
430dbb14 | 2173 | port_idx = port_idx ? port_idx : UINT16_MAX; |
4e022ec0 | 2174 | |
430dbb14 | 2175 | if (port_idx >= ofproto->max_ports |
fdcea803 GS |
2176 | || ofport_get_usage(ofproto, u16_to_ofp(port_idx)) == LLONG_MAX) { |
2177 | uint16_t lru_ofport = 0, end_port_no = ofproto->alloc_port_no; | |
2178 | long long int last_used_at, lru = LLONG_MAX; | |
e1b1d06a | 2179 | |
e1b1d06a JP |
2180 | /* Search for a free OpenFlow port number. We try not to |
2181 | * immediately reuse them to prevent problems due to old | |
484c8355 BP |
2182 | * flows. |
2183 | * | |
2184 | * We limit the automatically assigned port numbers to the lower half | |
2185 | * of the port range, to reserve the upper half for assignment by | |
2186 | * controllers. */ | |
6033d9d9 | 2187 | for (;;) { |
484c8355 | 2188 | if (++ofproto->alloc_port_no >= MIN(ofproto->max_ports, 32768)) { |
fdcea803 | 2189 | ofproto->alloc_port_no = 1; |
6033d9d9 | 2190 | } |
fdcea803 GS |
2191 | last_used_at = ofport_get_usage(ofproto, |
2192 | u16_to_ofp(ofproto->alloc_port_no)); | |
2193 | if (!last_used_at) { | |
430dbb14 | 2194 | port_idx = ofproto->alloc_port_no; |
6033d9d9 | 2195 | break; |
865b26a4 GS |
2196 | } else if ( last_used_at < time_msec() - 60*60*1000) { |
2197 | /* If the port with ofport 'ofproto->alloc_port_no' was deleted | |
2198 | * more than an hour ago, consider it usable. */ | |
2199 | ofport_remove_usage(ofproto, | |
2200 | u16_to_ofp(ofproto->alloc_port_no)); | |
2201 | port_idx = ofproto->alloc_port_no; | |
2202 | break; | |
fdcea803 GS |
2203 | } else if (last_used_at < lru) { |
2204 | lru = last_used_at; | |
2205 | lru_ofport = ofproto->alloc_port_no; | |
e1b1d06a | 2206 | } |
fdcea803 | 2207 | |
430dbb14 | 2208 | if (ofproto->alloc_port_no == end_port_no) { |
fdcea803 GS |
2209 | if (lru_ofport) { |
2210 | port_idx = lru_ofport; | |
2211 | break; | |
2212 | } | |
6033d9d9 | 2213 | return OFPP_NONE; |
e1b1d06a JP |
2214 | } |
2215 | } | |
2216 | } | |
fdcea803 | 2217 | ofport_set_usage(ofproto, u16_to_ofp(port_idx), LLONG_MAX); |
4e022ec0 | 2218 | return u16_to_ofp(port_idx); |
e1b1d06a JP |
2219 | } |
2220 | ||
2221 | static void | |
fdcea803 | 2222 | dealloc_ofp_port(struct ofproto *ofproto, ofp_port_t ofp_port) |
e1b1d06a | 2223 | { |
430dbb14 | 2224 | if (ofp_to_u16(ofp_port) < ofproto->max_ports) { |
fdcea803 | 2225 | ofport_set_usage(ofproto, ofp_port, time_msec()); |
40fa9417 | 2226 | } |
e1b1d06a JP |
2227 | } |
2228 | ||
fbfa2911 BP |
2229 | /* Opens and returns a netdev for 'ofproto_port' in 'ofproto', or a null |
2230 | * pointer if the netdev cannot be opened. On success, also fills in | |
d7d92203 | 2231 | * '*pp'. */ |
b33951b8 | 2232 | static struct netdev * |
e1b1d06a JP |
2233 | ofport_open(struct ofproto *ofproto, |
2234 | struct ofproto_port *ofproto_port, | |
9e1fd49b | 2235 | struct ofputil_phy_port *pp) |
064af421 BP |
2236 | { |
2237 | enum netdev_flags flags; | |
064af421 | 2238 | struct netdev *netdev; |
064af421 BP |
2239 | int error; |
2240 | ||
18812dff | 2241 | error = netdev_open(ofproto_port->name, ofproto_port->type, &netdev); |
064af421 | 2242 | if (error) { |
fbfa2911 | 2243 | VLOG_WARN_RL(&rl, "%s: ignoring port %s (%"PRIu16") because netdev %s " |
064af421 | 2244 | "cannot be opened (%s)", |
fbfa2911 | 2245 | ofproto->name, |
abe529af | 2246 | ofproto_port->name, ofproto_port->ofp_port, |
10a89ef0 | 2247 | ofproto_port->name, ovs_strerror(error)); |
064af421 BP |
2248 | return NULL; |
2249 | } | |
2250 | ||
e1b1d06a JP |
2251 | if (ofproto_port->ofp_port == OFPP_NONE) { |
2252 | if (!strcmp(ofproto->name, ofproto_port->name)) { | |
2253 | ofproto_port->ofp_port = OFPP_LOCAL; | |
2254 | } else { | |
2255 | ofproto_port->ofp_port = alloc_ofp_port(ofproto, | |
2256 | ofproto_port->name); | |
2257 | } | |
2258 | } | |
9e1fd49b BP |
2259 | pp->port_no = ofproto_port->ofp_port; |
2260 | netdev_get_etheraddr(netdev, pp->hw_addr); | |
2261 | ovs_strlcpy(pp->name, ofproto_port->name, sizeof pp->name); | |
064af421 | 2262 | netdev_get_flags(netdev, &flags); |
9e1fd49b BP |
2263 | pp->config = flags & NETDEV_UP ? 0 : OFPUTIL_PC_PORT_DOWN; |
2264 | pp->state = netdev_get_carrier(netdev) ? 0 : OFPUTIL_PS_LINK_DOWN; | |
2265 | netdev_get_features(netdev, &pp->curr, &pp->advertised, | |
2266 | &pp->supported, &pp->peer); | |
cd65125d BP |
2267 | pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000; |
2268 | pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000; | |
118c4676 | 2269 | |
b33951b8 | 2270 | return netdev; |
064af421 BP |
2271 | } |
2272 | ||
b33951b8 | 2273 | /* Returns true if most fields of 'a' and 'b' are equal. Differences in name, |
d7d92203 | 2274 | * port number, and 'config' bits other than OFPUTIL_PC_PORT_DOWN are |
b33951b8 BP |
2275 | * disregarded. */ |
2276 | static bool | |
9e1fd49b BP |
2277 | ofport_equal(const struct ofputil_phy_port *a, |
2278 | const struct ofputil_phy_port *b) | |
064af421 | 2279 | { |
9e1fd49b | 2280 | return (eth_addr_equals(a->hw_addr, b->hw_addr) |
064af421 | 2281 | && a->state == b->state |
9e1fd49b | 2282 | && !((a->config ^ b->config) & OFPUTIL_PC_PORT_DOWN) |
064af421 BP |
2283 | && a->curr == b->curr |
2284 | && a->advertised == b->advertised | |
2285 | && a->supported == b->supported | |
9e1fd49b BP |
2286 | && a->peer == b->peer |
2287 | && a->curr_speed == b->curr_speed | |
2288 | && a->max_speed == b->max_speed); | |
064af421 BP |
2289 | } |
2290 | ||
b33951b8 BP |
2291 | /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'. |
2292 | * The caller must ensure that 'p' does not have a conflicting ofport (that is, | |
2293 | * one with the same name or port number). */ | |
064af421 | 2294 | static void |
b33951b8 | 2295 | ofport_install(struct ofproto *p, |
9e1fd49b | 2296 | struct netdev *netdev, const struct ofputil_phy_port *pp) |
064af421 | 2297 | { |
b33951b8 BP |
2298 | const char *netdev_name = netdev_get_name(netdev); |
2299 | struct ofport *ofport; | |
abe529af | 2300 | int error; |
72b06300 | 2301 | |
b33951b8 | 2302 | /* Create ofport. */ |
abe529af BP |
2303 | ofport = p->ofproto_class->port_alloc(); |
2304 | if (!ofport) { | |
2305 | error = ENOMEM; | |
2306 | goto error; | |
2307 | } | |
0f7d71a5 | 2308 | ofport->ofproto = p; |
b33951b8 | 2309 | ofport->netdev = netdev; |
61501798 | 2310 | ofport->change_seq = netdev_get_change_seq(netdev); |
9e1fd49b BP |
2311 | ofport->pp = *pp; |
2312 | ofport->ofp_port = pp->port_no; | |
65e0be10 | 2313 | ofport->created = time_msec(); |
b33951b8 BP |
2314 | |
2315 | /* Add port to 'p'. */ | |
4e022ec0 | 2316 | hmap_insert(&p->ports, &ofport->hmap_node, |
f9c0c3ec | 2317 | hash_ofp_port(ofport->ofp_port)); |
72b06300 | 2318 | shash_add(&p->port_by_name, netdev_name, ofport); |
abe529af | 2319 | |
ada3428f | 2320 | update_mtu(p, ofport); |
9197df76 | 2321 | |
abe529af BP |
2322 | /* Let the ofproto_class initialize its private data. */ |
2323 | error = p->ofproto_class->port_construct(ofport); | |
2324 | if (error) { | |
2325 | goto error; | |
2326 | } | |
2a6f78e0 | 2327 | connmgr_send_port_status(p->connmgr, NULL, pp, OFPPR_ADD); |
abe529af BP |
2328 | return; |
2329 | ||
2330 | error: | |
2331 | VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)", | |
10a89ef0 | 2332 | p->name, netdev_name, ovs_strerror(error)); |
abe529af BP |
2333 | if (ofport) { |
2334 | ofport_destroy__(ofport); | |
2335 | } else { | |
2336 | netdev_close(netdev); | |
72b06300 | 2337 | } |
064af421 BP |
2338 | } |
2339 | ||
b33951b8 | 2340 | /* Removes 'ofport' from 'p' and destroys it. */ |
064af421 | 2341 | static void |
0f7d71a5 | 2342 | ofport_remove(struct ofport *ofport) |
064af421 | 2343 | { |
2a6f78e0 | 2344 | connmgr_send_port_status(ofport->ofproto->connmgr, NULL, &ofport->pp, |
fa066f01 | 2345 | OFPPR_DELETE); |
abe529af | 2346 | ofport_destroy(ofport); |
b33951b8 BP |
2347 | } |
2348 | ||
2349 | /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and | |
2350 | * destroys it. */ | |
2351 | static void | |
2352 | ofport_remove_with_name(struct ofproto *ofproto, const char *name) | |
2353 | { | |
2354 | struct ofport *port = shash_find_data(&ofproto->port_by_name, name); | |
2355 | if (port) { | |
0f7d71a5 | 2356 | ofport_remove(port); |
b33951b8 BP |
2357 | } |
2358 | } | |
2359 | ||
9e1fd49b | 2360 | /* Updates 'port' with new 'pp' description. |
b33951b8 BP |
2361 | * |
2362 | * Does not handle a name or port number change. The caller must implement | |
2363 | * such a change as a delete followed by an add. */ | |
2364 | static void | |
9e1fd49b | 2365 | ofport_modified(struct ofport *port, struct ofputil_phy_port *pp) |
b33951b8 | 2366 | { |
9e1fd49b BP |
2367 | memcpy(port->pp.hw_addr, pp->hw_addr, ETH_ADDR_LEN); |
2368 | port->pp.config = ((port->pp.config & ~OFPUTIL_PC_PORT_DOWN) | |
2369 | | (pp->config & OFPUTIL_PC_PORT_DOWN)); | |
53fd5c7c BP |
2370 | port->pp.state = ((port->pp.state & ~OFPUTIL_PS_LINK_DOWN) |
2371 | | (pp->state & OFPUTIL_PS_LINK_DOWN)); | |
9e1fd49b BP |
2372 | port->pp.curr = pp->curr; |
2373 | port->pp.advertised = pp->advertised; | |
2374 | port->pp.supported = pp->supported; | |
2375 | port->pp.peer = pp->peer; | |
2376 | port->pp.curr_speed = pp->curr_speed; | |
2377 | port->pp.max_speed = pp->max_speed; | |
b33951b8 | 2378 | |
2a6f78e0 BP |
2379 | connmgr_send_port_status(port->ofproto->connmgr, NULL, |
2380 | &port->pp, OFPPR_MODIFY); | |
064af421 BP |
2381 | } |
2382 | ||
5a2dfd47 JP |
2383 | /* Update OpenFlow 'state' in 'port' and notify controller. */ |
2384 | void | |
9e1fd49b | 2385 | ofproto_port_set_state(struct ofport *port, enum ofputil_port_state state) |
5a2dfd47 | 2386 | { |
9e1fd49b BP |
2387 | if (port->pp.state != state) { |
2388 | port->pp.state = state; | |
2a6f78e0 BP |
2389 | connmgr_send_port_status(port->ofproto->connmgr, NULL, |
2390 | &port->pp, OFPPR_MODIFY); | |
5a2dfd47 JP |
2391 | } |
2392 | } | |
2393 | ||
abe529af | 2394 | void |
4e022ec0 | 2395 | ofproto_port_unregister(struct ofproto *ofproto, ofp_port_t ofp_port) |
e7934396 | 2396 | { |
abe529af BP |
2397 | struct ofport *port = ofproto_get_port(ofproto, ofp_port); |
2398 | if (port) { | |
52a90c29 BP |
2399 | if (port->ofproto->ofproto_class->set_realdev) { |
2400 | port->ofproto->ofproto_class->set_realdev(port, 0, 0); | |
2401 | } | |
b308140a JP |
2402 | if (port->ofproto->ofproto_class->set_stp_port) { |
2403 | port->ofproto->ofproto_class->set_stp_port(port, NULL); | |
2404 | } | |
9efd308e DV |
2405 | if (port->ofproto->ofproto_class->set_rstp_port) { |
2406 | port->ofproto->ofproto_class->set_rstp_port(port, NULL); | |
2407 | } | |
abe529af | 2408 | if (port->ofproto->ofproto_class->set_cfm) { |
a5610457 | 2409 | port->ofproto->ofproto_class->set_cfm(port, NULL); |
abe529af BP |
2410 | } |
2411 | if (port->ofproto->ofproto_class->bundle_remove) { | |
2412 | port->ofproto->ofproto_class->bundle_remove(port); | |
e7934396 BP |
2413 | } |
2414 | } | |
2415 | } | |
2416 | ||
2417 | static void | |
abe529af | 2418 | ofport_destroy__(struct ofport *port) |
e7934396 | 2419 | { |
abe529af BP |
2420 | struct ofproto *ofproto = port->ofproto; |
2421 | const char *name = netdev_get_name(port->netdev); | |
fa066f01 | 2422 | |
abe529af BP |
2423 | hmap_remove(&ofproto->ports, &port->hmap_node); |
2424 | shash_delete(&ofproto->port_by_name, | |
2425 | shash_find(&ofproto->port_by_name, name)); | |
fa066f01 | 2426 | |
abe529af BP |
2427 | netdev_close(port->netdev); |
2428 | ofproto->ofproto_class->port_dealloc(port); | |
e7934396 BP |
2429 | } |
2430 | ||
064af421 | 2431 | static void |
abe529af | 2432 | ofport_destroy(struct ofport *port) |
064af421 | 2433 | { |
fa066f01 | 2434 | if (port) { |
e1b1d06a | 2435 | dealloc_ofp_port(port->ofproto, port->ofp_port); |
abe529af BP |
2436 | port->ofproto->ofproto_class->port_destruct(port); |
2437 | ofport_destroy__(port); | |
2438 | } | |
064af421 BP |
2439 | } |
2440 | ||
abe529af | 2441 | struct ofport * |
4e022ec0 | 2442 | ofproto_get_port(const struct ofproto *ofproto, ofp_port_t ofp_port) |
ca0f572c BP |
2443 | { |
2444 | struct ofport *port; | |
2445 | ||
f9c0c3ec | 2446 | HMAP_FOR_EACH_IN_BUCKET (port, hmap_node, hash_ofp_port(ofp_port), |
4e022ec0 | 2447 | &ofproto->ports) { |
abe529af | 2448 | if (port->ofp_port == ofp_port) { |
ca0f572c BP |
2449 | return port; |
2450 | } | |
2451 | } | |
2452 | return NULL; | |
2453 | } | |
2454 | ||
fdcea803 GS |
2455 | static long long int |
2456 | ofport_get_usage(const struct ofproto *ofproto, ofp_port_t ofp_port) | |
2457 | { | |
2458 | struct ofport_usage *usage; | |
2459 | ||
2460 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2461 | &ofproto->ofport_usage) { | |
2462 | if (usage->ofp_port == ofp_port) { | |
2463 | return usage->last_used; | |
2464 | } | |
2465 | } | |
2466 | return 0; | |
2467 | } | |
2468 | ||
2469 | static void | |
2470 | ofport_set_usage(struct ofproto *ofproto, ofp_port_t ofp_port, | |
2471 | long long int last_used) | |
2472 | { | |
2473 | struct ofport_usage *usage; | |
2474 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2475 | &ofproto->ofport_usage) { | |
2476 | if (usage->ofp_port == ofp_port) { | |
2477 | usage->last_used = last_used; | |
2478 | return; | |
2479 | } | |
2480 | } | |
2481 | ovs_assert(last_used == LLONG_MAX); | |
2482 | ||
2483 | usage = xmalloc(sizeof *usage); | |
2484 | usage->ofp_port = ofp_port; | |
2485 | usage->last_used = last_used; | |
2486 | hmap_insert(&ofproto->ofport_usage, &usage->hmap_node, | |
2487 | hash_ofp_port(ofp_port)); | |
2488 | } | |
2489 | ||
865b26a4 GS |
2490 | static void |
2491 | ofport_remove_usage(struct ofproto *ofproto, ofp_port_t ofp_port) | |
2492 | { | |
2493 | struct ofport_usage *usage; | |
2494 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2495 | &ofproto->ofport_usage) { | |
2496 | if (usage->ofp_port == ofp_port) { | |
2497 | hmap_remove(&ofproto->ofport_usage, &usage->hmap_node); | |
2498 | free(usage); | |
2499 | break; | |
2500 | } | |
2501 | } | |
2502 | } | |
2503 | ||
6527c598 PS |
2504 | int |
2505 | ofproto_port_get_stats(const struct ofport *port, struct netdev_stats *stats) | |
2506 | { | |
2507 | struct ofproto *ofproto = port->ofproto; | |
2508 | int error; | |
2509 | ||
2510 | if (ofproto->ofproto_class->port_get_stats) { | |
2511 | error = ofproto->ofproto_class->port_get_stats(port, stats); | |
2512 | } else { | |
2513 | error = EOPNOTSUPP; | |
2514 | } | |
2515 | ||
2516 | return error; | |
2517 | } | |
2518 | ||
064af421 | 2519 | static void |
b33951b8 | 2520 | update_port(struct ofproto *ofproto, const char *name) |
064af421 | 2521 | { |
abe529af | 2522 | struct ofproto_port ofproto_port; |
9e1fd49b | 2523 | struct ofputil_phy_port pp; |
b33951b8 BP |
2524 | struct netdev *netdev; |
2525 | struct ofport *port; | |
064af421 BP |
2526 | |
2527 | COVERAGE_INC(ofproto_update_port); | |
c874dc6d | 2528 | |
b33951b8 | 2529 | /* Fetch 'name''s location and properties from the datapath. */ |
abe529af | 2530 | netdev = (!ofproto_port_query_by_name(ofproto, name, &ofproto_port) |
fbfa2911 | 2531 | ? ofport_open(ofproto, &ofproto_port, &pp) |
b33951b8 | 2532 | : NULL); |
4e022ec0 | 2533 | |
b33951b8 | 2534 | if (netdev) { |
abe529af | 2535 | port = ofproto_get_port(ofproto, ofproto_port.ofp_port); |
b33951b8 | 2536 | if (port && !strcmp(netdev_get_name(port->netdev), name)) { |
e65942a0 BP |
2537 | struct netdev *old_netdev = port->netdev; |
2538 | ||
b33951b8 | 2539 | /* 'name' hasn't changed location. Any properties changed? */ |
9e1fd49b BP |
2540 | if (!ofport_equal(&port->pp, &pp)) { |
2541 | ofport_modified(port, &pp); | |
abe529af BP |
2542 | } |
2543 | ||
ada3428f | 2544 | update_mtu(ofproto, port); |
9197df76 | 2545 | |
e65942a0 BP |
2546 | /* Install the newly opened netdev in case it has changed. |
2547 | * Don't close the old netdev yet in case port_modified has to | |
2548 | * remove a retained reference to it.*/ | |
abe529af | 2549 | port->netdev = netdev; |
61501798 | 2550 | port->change_seq = netdev_get_change_seq(netdev); |
abe529af BP |
2551 | |
2552 | if (port->ofproto->ofproto_class->port_modified) { | |
2553 | port->ofproto->ofproto_class->port_modified(port); | |
b33951b8 | 2554 | } |
e65942a0 BP |
2555 | |
2556 | netdev_close(old_netdev); | |
b33951b8 BP |
2557 | } else { |
2558 | /* If 'port' is nonnull then its name differs from 'name' and thus | |
2559 | * we should delete it. If we think there's a port named 'name' | |
2560 | * then its port number must be wrong now so delete it too. */ | |
2561 | if (port) { | |
0f7d71a5 | 2562 | ofport_remove(port); |
b33951b8 BP |
2563 | } |
2564 | ofport_remove_with_name(ofproto, name); | |
9e1fd49b | 2565 | ofport_install(ofproto, netdev, &pp); |
c874dc6d | 2566 | } |
b33951b8 BP |
2567 | } else { |
2568 | /* Any port named 'name' is gone now. */ | |
2569 | ofport_remove_with_name(ofproto, name); | |
c874dc6d | 2570 | } |
abe529af | 2571 | ofproto_port_destroy(&ofproto_port); |
064af421 BP |
2572 | } |
2573 | ||
2574 | static int | |
2575 | init_ports(struct ofproto *p) | |
2576 | { | |
abe529af BP |
2577 | struct ofproto_port_dump dump; |
2578 | struct ofproto_port ofproto_port; | |
e1b1d06a | 2579 | struct shash_node *node, *next; |
abe529af BP |
2580 | |
2581 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { | |
e1b1d06a JP |
2582 | const char *name = ofproto_port.name; |
2583 | ||
2584 | if (shash_find(&p->port_by_name, name)) { | |
fbfa2911 | 2585 | VLOG_WARN_RL(&rl, "%s: ignoring duplicate device %s in datapath", |
e1b1d06a | 2586 | p->name, name); |
abe529af | 2587 | } else { |
9e1fd49b | 2588 | struct ofputil_phy_port pp; |
b33951b8 BP |
2589 | struct netdev *netdev; |
2590 | ||
e1b1d06a JP |
2591 | /* Check if an OpenFlow port number had been requested. */ |
2592 | node = shash_find(&init_ofp_ports, name); | |
2593 | if (node) { | |
2594 | const struct iface_hint *iface_hint = node->data; | |
4e022ec0 AW |
2595 | simap_put(&p->ofp_requests, name, |
2596 | ofp_to_u16(iface_hint->ofp_port)); | |
e1b1d06a JP |
2597 | } |
2598 | ||
fbfa2911 | 2599 | netdev = ofport_open(p, &ofproto_port, &pp); |
b33951b8 | 2600 | if (netdev) { |
9e1fd49b | 2601 | ofport_install(p, netdev, &pp); |
430dbb14 | 2602 | if (ofp_to_u16(ofproto_port.ofp_port) < p->max_ports) { |
7c35397c | 2603 | p->alloc_port_no = MAX(p->alloc_port_no, |
430dbb14 | 2604 | ofp_to_u16(ofproto_port.ofp_port)); |
7c35397c | 2605 | } |
064af421 BP |
2606 | } |
2607 | } | |
2608 | } | |
b0ec0f27 | 2609 | |
e1b1d06a | 2610 | SHASH_FOR_EACH_SAFE(node, next, &init_ofp_ports) { |
4f9e08a5 | 2611 | struct iface_hint *iface_hint = node->data; |
e1b1d06a JP |
2612 | |
2613 | if (!strcmp(iface_hint->br_name, p->name)) { | |
2614 | free(iface_hint->br_name); | |
2615 | free(iface_hint->br_type); | |
4f9e08a5 | 2616 | free(iface_hint); |
e1b1d06a JP |
2617 | shash_delete(&init_ofp_ports, node); |
2618 | } | |
2619 | } | |
2620 | ||
064af421 BP |
2621 | return 0; |
2622 | } | |
9197df76 JP |
2623 | |
2624 | /* Find the minimum MTU of all non-datapath devices attached to 'p'. | |
2625 | * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */ | |
2626 | static int | |
2627 | find_min_mtu(struct ofproto *p) | |
2628 | { | |
2629 | struct ofport *ofport; | |
2630 | int mtu = 0; | |
2631 | ||
2632 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2633 | struct netdev *netdev = ofport->netdev; | |
2634 | int dev_mtu; | |
2635 | ||
2636 | /* Skip any internal ports, since that's what we're trying to | |
2637 | * set. */ | |
2638 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
2639 | continue; | |
2640 | } | |
2641 | ||
2642 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2643 | continue; | |
2644 | } | |
2645 | if (!mtu || dev_mtu < mtu) { | |
2646 | mtu = dev_mtu; | |
2647 | } | |
2648 | } | |
2649 | ||
2650 | return mtu ? mtu: ETH_PAYLOAD_MAX; | |
2651 | } | |
2652 | ||
ada3428f PS |
2653 | /* Update MTU of all datapath devices on 'p' to the minimum of the |
2654 | * non-datapath ports in event of 'port' added or changed. */ | |
9197df76 | 2655 | static void |
ada3428f | 2656 | update_mtu(struct ofproto *p, struct ofport *port) |
9197df76 JP |
2657 | { |
2658 | struct ofport *ofport; | |
ada3428f PS |
2659 | struct netdev *netdev = port->netdev; |
2660 | int dev_mtu, old_min; | |
2661 | ||
2662 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2663 | port->mtu = 0; | |
2664 | return; | |
2665 | } | |
2666 | if (!strcmp(netdev_get_type(port->netdev), "internal")) { | |
2667 | if (dev_mtu > p->min_mtu) { | |
2668 | if (!netdev_set_mtu(port->netdev, p->min_mtu)) { | |
2669 | dev_mtu = p->min_mtu; | |
2670 | } | |
2671 | } | |
2672 | port->mtu = dev_mtu; | |
2673 | return; | |
2674 | } | |
2675 | ||
2676 | /* For non-internal port find new min mtu. */ | |
2677 | old_min = p->min_mtu; | |
2678 | port->mtu = dev_mtu; | |
2679 | p->min_mtu = find_min_mtu(p); | |
2680 | if (p->min_mtu == old_min) { | |
2681 | return; | |
2682 | } | |
9197df76 JP |
2683 | |
2684 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2685 | struct netdev *netdev = ofport->netdev; | |
2686 | ||
2687 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
ada3428f PS |
2688 | if (!netdev_set_mtu(netdev, p->min_mtu)) { |
2689 | ofport->mtu = p->min_mtu; | |
2690 | } | |
9197df76 JP |
2691 | } |
2692 | } | |
2693 | } | |
064af421 | 2694 | \f |
f416c8d6 JR |
2695 | static void |
2696 | ofproto_rule_destroy__(struct rule *rule) | |
2697 | OVS_NO_THREAD_SAFETY_ANALYSIS | |
2698 | { | |
2699 | cls_rule_destroy(CONST_CAST(struct cls_rule *, &rule->cr)); | |
2700 | rule_actions_destroy(rule_get_actions(rule)); | |
2701 | ovs_mutex_destroy(&rule->mutex); | |
2702 | rule->ofproto->ofproto_class->rule_dealloc(rule); | |
2703 | } | |
2704 | ||
d6671377 JR |
2705 | /* Create a new rule based on attributes in 'fm', match in 'cr', and |
2706 | * 'table_id'. Note that the rule is NOT inserted into a any data structures | |
2707 | * yet. Takes ownership of 'cr'. */ | |
2708 | static enum ofperr | |
2709 | ofproto_rule_create(struct ofproto *ofproto, struct ofputil_flow_mod *fm, | |
2710 | struct cls_rule *cr, uint8_t table_id, | |
2711 | struct rule **rulep) | |
2712 | OVS_REQUIRES(ofproto_mutex) | |
2713 | { | |
2714 | struct rule *rule; | |
2715 | enum ofperr error; | |
2716 | ||
2717 | /* Allocate new rule. */ | |
2718 | rule = ofproto->ofproto_class->rule_alloc(); | |
2719 | if (!rule) { | |
2720 | cls_rule_destroy(cr); | |
2721 | VLOG_WARN_RL(&rl, "%s: failed to allocate a rule.", ofproto->name); | |
2722 | return ENOMEM; | |
2723 | } | |
2724 | ||
2725 | /* Initialize base state. */ | |
2726 | *CONST_CAST(struct ofproto **, &rule->ofproto) = ofproto; | |
2727 | cls_rule_move(CONST_CAST(struct cls_rule *, &rule->cr), cr); | |
2728 | ovs_refcount_init(&rule->ref_count); | |
2729 | rule->flow_cookie = fm->new_cookie; | |
2730 | rule->created = rule->modified = time_msec(); | |
2731 | ||
2732 | ovs_mutex_init(&rule->mutex); | |
2733 | ovs_mutex_lock(&rule->mutex); | |
2734 | rule->idle_timeout = fm->idle_timeout; | |
2735 | rule->hard_timeout = fm->hard_timeout; | |
2736 | rule->importance = fm->importance; | |
2737 | ovs_mutex_unlock(&rule->mutex); | |
2738 | ||
2739 | *CONST_CAST(uint8_t *, &rule->table_id) = table_id; | |
2740 | rule->flags = fm->flags & OFPUTIL_FF_STATE; | |
2741 | ovsrcu_set_hidden(&rule->actions, | |
2742 | rule_actions_create(fm->ofpacts, fm->ofpacts_len)); | |
2743 | list_init(&rule->meter_list_node); | |
2744 | rule->eviction_group = NULL; | |
2745 | list_init(&rule->expirable); | |
2746 | rule->monitor_flags = 0; | |
2747 | rule->add_seqno = 0; | |
2748 | rule->modify_seqno = 0; | |
2749 | ||
2750 | /* Construct rule, initializing derived state. */ | |
2751 | error = ofproto->ofproto_class->rule_construct(rule); | |
2752 | if (error) { | |
2753 | ofproto_rule_destroy__(rule); | |
2754 | return error; | |
2755 | } | |
2756 | ||
2757 | *rulep = rule; | |
2758 | return 0; | |
2759 | } | |
2760 | ||
f416c8d6 JR |
2761 | static void |
2762 | rule_destroy_cb(struct rule *rule) | |
2763 | { | |
2764 | rule->ofproto->ofproto_class->rule_destruct(rule); | |
2765 | ofproto_rule_destroy__(rule); | |
2766 | } | |
2767 | ||
a2143702 BP |
2768 | void |
2769 | ofproto_rule_ref(struct rule *rule) | |
064af421 | 2770 | { |
1eae3d33 | 2771 | if (rule) { |
37bec3d3 | 2772 | ovs_refcount_ref(&rule->ref_count); |
a2143702 BP |
2773 | } |
2774 | } | |
2775 | ||
f5d16e55 JR |
2776 | bool |
2777 | ofproto_rule_try_ref(struct rule *rule) | |
2778 | { | |
2779 | if (rule) { | |
2780 | return ovs_refcount_try_ref_rcu(&rule->ref_count); | |
2781 | } | |
2782 | return false; | |
2783 | } | |
2784 | ||
f416c8d6 JR |
2785 | /* Decrements 'rule''s ref_count and schedules 'rule' to be destroyed if the |
2786 | * ref_count reaches 0. | |
2787 | * | |
2788 | * Use of RCU allows short term use (between RCU quiescent periods) without | |
2789 | * keeping a reference. A reference must be taken if the rule needs to | |
2790 | * stay around accross the RCU quiescent periods. */ | |
a2143702 BP |
2791 | void |
2792 | ofproto_rule_unref(struct rule *rule) | |
2793 | { | |
24f83812 | 2794 | if (rule && ovs_refcount_unref_relaxed(&rule->ref_count) == 1) { |
f416c8d6 | 2795 | ovsrcu_postpone(rule_destroy_cb, rule); |
1eae3d33 | 2796 | } |
064af421 BP |
2797 | } |
2798 | ||
809c7548 RW |
2799 | void |
2800 | ofproto_group_ref(struct ofgroup *group) | |
2801 | { | |
2802 | if (group) { | |
2803 | ovs_refcount_ref(&group->ref_count); | |
2804 | } | |
2805 | } | |
2806 | ||
2807 | void | |
2808 | ofproto_group_unref(struct ofgroup *group) | |
2809 | { | |
2810 | if (group && ovs_refcount_unref(&group->ref_count) == 1) { | |
2811 | group->ofproto->ofproto_class->group_destruct(group); | |
2812 | ofputil_bucket_list_destroy(&group->buckets); | |
2813 | group->ofproto->ofproto_class->group_dealloc(group); | |
2814 | } | |
2815 | } | |
2816 | ||
65efd2ab JR |
2817 | static uint32_t get_provider_meter_id(const struct ofproto *, |
2818 | uint32_t of_meter_id); | |
2819 | ||
dc723c44 JR |
2820 | /* Creates and returns a new 'struct rule_actions', whose actions are a copy |
2821 | * of from the 'ofpacts_len' bytes of 'ofpacts'. */ | |
2822 | const struct rule_actions * | |
4c7562c5 | 2823 | rule_actions_create(const struct ofpact *ofpacts, size_t ofpacts_len) |
6f00e29b BP |
2824 | { |
2825 | struct rule_actions *actions; | |
2826 | ||
dc723c44 | 2827 | actions = xmalloc(sizeof *actions + ofpacts_len); |
6f00e29b | 2828 | actions->ofpacts_len = ofpacts_len; |
4c7562c5 | 2829 | actions->has_meter = ofpacts_get_meter(ofpacts, ofpacts_len) != 0; |
dc723c44 | 2830 | memcpy(actions->ofpacts, ofpacts, ofpacts_len); |
65efd2ab | 2831 | |
35f48b8b BP |
2832 | actions->has_learn_with_delete = (next_learn_with_delete(actions, NULL) |
2833 | != NULL); | |
2834 | ||
6f00e29b BP |
2835 | return actions; |
2836 | } | |
2837 | ||
dc723c44 | 2838 | /* Free the actions after the RCU quiescent period is reached. */ |
6f00e29b | 2839 | void |
dc723c44 | 2840 | rule_actions_destroy(const struct rule_actions *actions) |
6f00e29b | 2841 | { |
06a0f3e2 | 2842 | if (actions) { |
dc723c44 | 2843 | ovsrcu_postpone(free, CONST_CAST(struct rule_actions *, actions)); |
6f00e29b BP |
2844 | } |
2845 | } | |
2846 | ||
bcf84111 | 2847 | /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action |
f25d0cf3 | 2848 | * that outputs to 'port' (output to OFPP_FLOOD and OFPP_ALL doesn't count). */ |
cdbdeeda | 2849 | bool |
4e022ec0 | 2850 | ofproto_rule_has_out_port(const struct rule *rule, ofp_port_t port) |
15aaf599 | 2851 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 2852 | { |
06a0f3e2 BP |
2853 | if (port == OFPP_ANY) { |
2854 | return true; | |
2855 | } else { | |
2856 | const struct rule_actions *actions = rule_get_actions(rule); | |
2857 | return ofpacts_output_to_port(actions->ofpacts, | |
2858 | actions->ofpacts_len, port); | |
2859 | } | |
064af421 BP |
2860 | } |
2861 | ||
7395c052 | 2862 | /* Returns true if 'rule' has group and equals group_id. */ |
74e79b7c | 2863 | static bool |
7395c052 | 2864 | ofproto_rule_has_out_group(const struct rule *rule, uint32_t group_id) |
15aaf599 | 2865 | OVS_REQUIRES(ofproto_mutex) |
7395c052 | 2866 | { |
06a0f3e2 BP |
2867 | if (group_id == OFPG_ANY) { |
2868 | return true; | |
2869 | } else { | |
2870 | const struct rule_actions *actions = rule_get_actions(rule); | |
2871 | return ofpacts_output_to_group(actions->ofpacts, | |
2872 | actions->ofpacts_len, group_id); | |
2873 | } | |
7395c052 NZ |
2874 | } |
2875 | ||
35412852 BP |
2876 | static void |
2877 | rule_execute_destroy(struct rule_execute *e) | |
eedc0097 | 2878 | { |
35412852 BP |
2879 | ofproto_rule_unref(e->rule); |
2880 | list_remove(&e->list_node); | |
2881 | free(e); | |
2882 | } | |
eedc0097 | 2883 | |
35412852 BP |
2884 | /* Executes all "rule_execute" operations queued up in ofproto->rule_executes, |
2885 | * by passing them to the ofproto provider. */ | |
2886 | static void | |
2887 | run_rule_executes(struct ofproto *ofproto) | |
15aaf599 | 2888 | OVS_EXCLUDED(ofproto_mutex) |
35412852 BP |
2889 | { |
2890 | struct rule_execute *e, *next; | |
ca6ba700 | 2891 | struct ovs_list executes; |
35412852 BP |
2892 | |
2893 | guarded_list_pop_all(&ofproto->rule_executes, &executes); | |
2894 | LIST_FOR_EACH_SAFE (e, next, list_node, &executes) { | |
35412852 BP |
2895 | struct flow flow; |
2896 | ||
cf62fa4c | 2897 | flow_extract(e->packet, &flow); |
b5e7e61a | 2898 | flow.in_port.ofp_port = e->in_port; |
35412852 BP |
2899 | ofproto->ofproto_class->rule_execute(e->rule, &flow, e->packet); |
2900 | ||
2901 | rule_execute_destroy(e); | |
2902 | } | |
2903 | } | |
2904 | ||
2905 | /* Destroys and discards all "rule_execute" operations queued up in | |
2906 | * ofproto->rule_executes. */ | |
2907 | static void | |
2908 | destroy_rule_executes(struct ofproto *ofproto) | |
2909 | { | |
2910 | struct rule_execute *e, *next; | |
ca6ba700 | 2911 | struct ovs_list executes; |
35412852 BP |
2912 | |
2913 | guarded_list_pop_all(&ofproto->rule_executes, &executes); | |
2914 | LIST_FOR_EACH_SAFE (e, next, list_node, &executes) { | |
cf62fa4c | 2915 | dp_packet_delete(e->packet); |
35412852 BP |
2916 | rule_execute_destroy(e); |
2917 | } | |
350a665f BP |
2918 | } |
2919 | ||
adcf00ba | 2920 | static bool |
834fe5cb | 2921 | rule_is_readonly(const struct rule *rule) |
5c67e4af | 2922 | { |
834fe5cb BP |
2923 | const struct oftable *table = &rule->ofproto->tables[rule->table_id]; |
2924 | return (table->flags & OFTABLE_READONLY) != 0; | |
5c67e4af | 2925 | } |
fa066f01 | 2926 | \f |
35f48b8b BP |
2927 | static uint32_t |
2928 | hash_learned_cookie(ovs_be64 cookie_, uint8_t table_id) | |
2929 | { | |
2930 | uint64_t cookie = (OVS_FORCE uint64_t) cookie_; | |
2931 | return hash_3words(cookie, cookie >> 32, table_id); | |
2932 | } | |
2933 | ||
2934 | static void | |
2935 | learned_cookies_update_one__(struct ofproto *ofproto, | |
2936 | const struct ofpact_learn *learn, | |
ca6ba700 | 2937 | int delta, struct ovs_list *dead_cookies) |
35f48b8b BP |
2938 | OVS_REQUIRES(ofproto_mutex) |
2939 | { | |
2940 | uint32_t hash = hash_learned_cookie(learn->cookie, learn->table_id); | |
2941 | struct learned_cookie *c; | |
2942 | ||
2943 | HMAP_FOR_EACH_WITH_HASH (c, u.hmap_node, hash, &ofproto->learned_cookies) { | |
2944 | if (c->cookie == learn->cookie && c->table_id == learn->table_id) { | |
2945 | c->n += delta; | |
2946 | ovs_assert(c->n >= 0); | |
2947 | ||
2948 | if (!c->n) { | |
2949 | hmap_remove(&ofproto->learned_cookies, &c->u.hmap_node); | |
2950 | list_push_back(dead_cookies, &c->u.list_node); | |
2951 | } | |
2952 | ||
2953 | return; | |
2954 | } | |
2955 | } | |
2956 | ||
2957 | ovs_assert(delta > 0); | |
2958 | c = xmalloc(sizeof *c); | |
2959 | hmap_insert(&ofproto->learned_cookies, &c->u.hmap_node, hash); | |
2960 | c->cookie = learn->cookie; | |
2961 | c->table_id = learn->table_id; | |
2962 | c->n = delta; | |
2963 | } | |
2964 | ||
2965 | static const struct ofpact_learn * | |
2966 | next_learn_with_delete(const struct rule_actions *actions, | |
2967 | const struct ofpact_learn *start) | |
2968 | { | |
2969 | const struct ofpact *pos; | |
2970 | ||
2971 | for (pos = start ? ofpact_next(&start->ofpact) : actions->ofpacts; | |
2972 | pos < ofpact_end(actions->ofpacts, actions->ofpacts_len); | |
2973 | pos = ofpact_next(pos)) { | |
2974 | if (pos->type == OFPACT_LEARN) { | |
2975 | const struct ofpact_learn *learn = ofpact_get_LEARN(pos); | |
2976 | if (learn->flags & NX_LEARN_F_DELETE_LEARNED) { | |
2977 | return learn; | |
2978 | } | |
2979 | } | |
2980 | } | |
2981 | ||
2982 | return NULL; | |
2983 | } | |
2984 | ||
2985 | static void | |
2986 | learned_cookies_update__(struct ofproto *ofproto, | |
2987 | const struct rule_actions *actions, | |
ca6ba700 | 2988 | int delta, struct ovs_list *dead_cookies) |
35f48b8b BP |
2989 | OVS_REQUIRES(ofproto_mutex) |
2990 | { | |
2991 | if (actions->has_learn_with_delete) { | |
2992 | const struct ofpact_learn *learn; | |
2993 | ||
2994 | for (learn = next_learn_with_delete(actions, NULL); learn; | |
2995 | learn = next_learn_with_delete(actions, learn)) { | |
2996 | learned_cookies_update_one__(ofproto, learn, delta, dead_cookies); | |
2997 | } | |
2998 | } | |
2999 | } | |
3000 | ||
3001 | static void | |
3002 | learned_cookies_inc(struct ofproto *ofproto, | |
3003 | const struct rule_actions *actions) | |
3004 | OVS_REQUIRES(ofproto_mutex) | |
3005 | { | |
3006 | learned_cookies_update__(ofproto, actions, +1, NULL); | |
3007 | } | |
3008 | ||
3009 | static void | |
3010 | learned_cookies_dec(struct ofproto *ofproto, | |
3011 | const struct rule_actions *actions, | |
ca6ba700 | 3012 | struct ovs_list *dead_cookies) |
35f48b8b BP |
3013 | OVS_REQUIRES(ofproto_mutex) |
3014 | { | |
3015 | learned_cookies_update__(ofproto, actions, -1, dead_cookies); | |
3016 | } | |
3017 | ||
3018 | static void | |
ca6ba700 | 3019 | learned_cookies_flush(struct ofproto *ofproto, struct ovs_list *dead_cookies) |
35f48b8b BP |
3020 | OVS_REQUIRES(ofproto_mutex) |
3021 | { | |
5f03c983 | 3022 | struct learned_cookie *c; |
35f48b8b | 3023 | |
5f03c983 | 3024 | LIST_FOR_EACH_POP (c, u.list_node, dead_cookies) { |
35f48b8b BP |
3025 | struct rule_criteria criteria; |
3026 | struct rule_collection rules; | |
3027 | struct match match; | |
3028 | ||
3029 | match_init_catchall(&match); | |
3030 | rule_criteria_init(&criteria, c->table_id, &match, 0, | |
3031 | c->cookie, OVS_BE64_MAX, OFPP_ANY, OFPG_ANY); | |
3032 | rule_criteria_require_rw(&criteria, false); | |
3033 | collect_rules_loose(ofproto, &criteria, &rules); | |
3034 | delete_flows__(&rules, OFPRR_DELETE, NULL); | |
3035 | rule_criteria_destroy(&criteria); | |
3036 | rule_collection_destroy(&rules); | |
3037 | ||
35f48b8b BP |
3038 | free(c); |
3039 | } | |
3040 | } | |
3041 | \f | |
90bf1e07 | 3042 | static enum ofperr |
d1e2cf21 | 3043 | handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3044 | { |
b0421aa2 | 3045 | ofconn_send_reply(ofconn, make_echo_reply(oh)); |
064af421 | 3046 | return 0; |
064af421 BP |
3047 | } |
3048 | ||
3c1bb396 BP |
3049 | static void |
3050 | query_tables(struct ofproto *ofproto, | |
3051 | struct ofputil_table_features **featuresp, | |
3052 | struct ofputil_table_stats **statsp) | |
3053 | { | |
178742f9 BP |
3054 | struct mf_bitmap rw_fields = oxm_writable_fields(); |
3055 | struct mf_bitmap match = oxm_matchable_fields(); | |
3056 | struct mf_bitmap mask = oxm_maskable_fields(); | |
3c1bb396 BP |
3057 | |
3058 | struct ofputil_table_features *features; | |
3059 | struct ofputil_table_stats *stats; | |
3060 | int i; | |
3061 | ||
3c1bb396 BP |
3062 | features = *featuresp = xcalloc(ofproto->n_tables, sizeof *features); |
3063 | for (i = 0; i < ofproto->n_tables; i++) { | |
3064 | struct ofputil_table_features *f = &features[i]; | |
3065 | ||
3066 | f->table_id = i; | |
3067 | sprintf(f->name, "table%d", i); | |
3068 | f->metadata_match = OVS_BE64_MAX; | |
3069 | f->metadata_write = OVS_BE64_MAX; | |
afcea9ea | 3070 | atomic_read_relaxed(&ofproto->tables[i].miss_config, &f->miss_config); |
3c1bb396 BP |
3071 | f->max_entries = 1000000; |
3072 | ||
5dc7516b BP |
3073 | bool more_tables = false; |
3074 | for (int j = i + 1; j < ofproto->n_tables; j++) { | |
3075 | if (!(ofproto->tables[j].flags & OFTABLE_HIDDEN)) { | |
3076 | bitmap_set1(f->nonmiss.next, j); | |
3077 | more_tables = true; | |
3078 | } | |
3079 | } | |
3c1bb396 | 3080 | f->nonmiss.instructions = (1u << N_OVS_INSTRUCTIONS) - 1; |
5dc7516b | 3081 | if (!more_tables) { |
3c1bb396 BP |
3082 | f->nonmiss.instructions &= ~(1u << OVSINST_OFPIT11_GOTO_TABLE); |
3083 | } | |
3084 | f->nonmiss.write.ofpacts = (UINT64_C(1) << N_OFPACTS) - 1; | |
3085 | f->nonmiss.write.set_fields = rw_fields; | |
3086 | f->nonmiss.apply = f->nonmiss.write; | |
3087 | f->miss = f->nonmiss; | |
3088 | ||
3089 | f->match = match; | |
3090 | f->mask = mask; | |
3091 | f->wildcard = match; | |
3092 | } | |
3093 | ||
3094 | if (statsp) { | |
3095 | stats = *statsp = xcalloc(ofproto->n_tables, sizeof *stats); | |
3096 | for (i = 0; i < ofproto->n_tables; i++) { | |
3097 | struct ofputil_table_stats *s = &stats[i]; | |
3098 | struct classifier *cls = &ofproto->tables[i].cls; | |
3099 | ||
3100 | s->table_id = i; | |
3101 | s->active_count = classifier_count(cls); | |
3fbbcba7 BP |
3102 | if (i == 0) { |
3103 | s->active_count -= connmgr_count_hidden_rules( | |
3104 | ofproto->connmgr); | |
3105 | } | |
3c1bb396 BP |
3106 | } |
3107 | } else { | |
3108 | stats = NULL; | |
3109 | } | |
3110 | ||
3111 | ofproto->ofproto_class->query_tables(ofproto, features, stats); | |
3112 | ||
3113 | for (i = 0; i < ofproto->n_tables; i++) { | |
3114 | const struct oftable *table = &ofproto->tables[i]; | |
3115 | struct ofputil_table_features *f = &features[i]; | |
3116 | ||
3117 | if (table->name) { | |
3118 | ovs_strzcpy(f->name, table->name, sizeof f->name); | |
3119 | } | |
3120 | ||
3121 | if (table->max_flows < f->max_entries) { | |
3122 | f->max_entries = table->max_flows; | |
3123 | } | |
3124 | } | |
3125 | } | |
3126 | ||
3127 | static void | |
3128 | query_switch_features(struct ofproto *ofproto, | |
3129 | bool *arp_match_ip, uint64_t *ofpacts) | |
3130 | { | |
3131 | struct ofputil_table_features *features, *f; | |
3132 | ||
3133 | *arp_match_ip = false; | |
3134 | *ofpacts = 0; | |
3135 | ||
3136 | query_tables(ofproto, &features, NULL); | |
3137 | for (f = features; f < &features[ofproto->n_tables]; f++) { | |
3138 | *ofpacts |= f->nonmiss.apply.ofpacts | f->miss.apply.ofpacts; | |
3139 | if (bitmap_is_set(f->match.bm, MFF_ARP_SPA) || | |
3140 | bitmap_is_set(f->match.bm, MFF_ARP_TPA)) { | |
3141 | *arp_match_ip = true; | |
3142 | } | |
3143 | } | |
3144 | free(features); | |
3145 | ||
3146 | /* Sanity check. */ | |
3147 | ovs_assert(*ofpacts & (UINT64_C(1) << OFPACT_OUTPUT)); | |
3148 | } | |
3149 | ||
90bf1e07 | 3150 | static enum ofperr |
d1e2cf21 | 3151 | handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3152 | { |
64ff1d96 | 3153 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
9e1fd49b | 3154 | struct ofputil_switch_features features; |
064af421 | 3155 | struct ofport *port; |
6c1491fb | 3156 | bool arp_match_ip; |
9e1fd49b | 3157 | struct ofpbuf *b; |
064af421 | 3158 | |
3c1bb396 | 3159 | query_switch_features(ofproto, &arp_match_ip, &features.ofpacts); |
064af421 | 3160 | |
9e1fd49b BP |
3161 | features.datapath_id = ofproto->datapath_id; |
3162 | features.n_buffers = pktbuf_capacity(); | |
adcf00ba | 3163 | features.n_tables = ofproto_get_n_visible_tables(ofproto); |
9e1fd49b | 3164 | features.capabilities = (OFPUTIL_C_FLOW_STATS | OFPUTIL_C_TABLE_STATS | |
4efe455d BP |
3165 | OFPUTIL_C_PORT_STATS | OFPUTIL_C_QUEUE_STATS | |
3166 | OFPUTIL_C_GROUP_STATS); | |
6c1491fb | 3167 | if (arp_match_ip) { |
9e1fd49b | 3168 | features.capabilities |= OFPUTIL_C_ARP_MATCH_IP; |
6c1491fb | 3169 | } |
2e1ae200 JR |
3170 | /* FIXME: Fill in proper features.auxiliary_id for auxiliary connections */ |
3171 | features.auxiliary_id = 0; | |
9e1fd49b BP |
3172 | b = ofputil_encode_switch_features(&features, ofconn_get_protocol(ofconn), |
3173 | oh->xid); | |
64ff1d96 | 3174 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
9e1fd49b | 3175 | ofputil_put_switch_features_port(&port->pp, b); |
064af421 | 3176 | } |
064af421 | 3177 | |
9e1fd49b | 3178 | ofconn_send_reply(ofconn, b); |
064af421 BP |
3179 | return 0; |
3180 | } | |
064af421 | 3181 | |
90bf1e07 | 3182 | static enum ofperr |
d1e2cf21 | 3183 | handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3184 | { |
64ff1d96 | 3185 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 | 3186 | struct ofp_switch_config *osc; |
f0fd1a17 | 3187 | enum ofp_config_flags flags; |
7257b535 | 3188 | struct ofpbuf *buf; |
959a2ecd | 3189 | |
064af421 | 3190 | /* Send reply. */ |
982697a4 BP |
3191 | buf = ofpraw_alloc_reply(OFPRAW_OFPT_GET_CONFIG_REPLY, oh, 0); |
3192 | osc = ofpbuf_put_uninit(buf, sizeof *osc); | |
f0fd1a17 | 3193 | flags = ofproto->frag_handling; |
2e1ae200 JR |
3194 | /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */ |
3195 | if (oh->version < OFP13_VERSION | |
3196 | && ofconn_get_invalid_ttl_to_controller(ofconn)) { | |
f0fd1a17 PS |
3197 | flags |= OFPC_INVALID_TTL_TO_CONTROLLER; |
3198 | } | |
3199 | osc->flags = htons(flags); | |
810605a2 | 3200 | osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn)); |
b0421aa2 | 3201 | ofconn_send_reply(ofconn, buf); |
2d70a31a | 3202 | |
064af421 BP |
3203 | return 0; |
3204 | } | |
064af421 | 3205 | |
90bf1e07 | 3206 | static enum ofperr |
982697a4 | 3207 | handle_set_config(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3208 | { |
982697a4 | 3209 | const struct ofp_switch_config *osc = ofpmsg_body(oh); |
64ff1d96 | 3210 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
d1e2cf21 | 3211 | uint16_t flags = ntohs(osc->flags); |
2d70a31a | 3212 | |
7257b535 | 3213 | if (ofconn_get_type(ofconn) != OFCONN_PRIMARY |
f4f1ea7e | 3214 | || ofconn_get_role(ofconn) != OFPCR12_ROLE_SLAVE) { |
7257b535 BP |
3215 | enum ofp_config_flags cur = ofproto->frag_handling; |
3216 | enum ofp_config_flags next = flags & OFPC_FRAG_MASK; | |
3217 | ||
cb22974d | 3218 | ovs_assert((cur & OFPC_FRAG_MASK) == cur); |
7257b535 BP |
3219 | if (cur != next) { |
3220 | if (ofproto->ofproto_class->set_frag_handling(ofproto, next)) { | |
3221 | ofproto->frag_handling = next; | |
3222 | } else { | |
3223 | VLOG_WARN_RL(&rl, "%s: unsupported fragment handling mode %s", | |
3224 | ofproto->name, | |
3225 | ofputil_frag_handling_to_string(next)); | |
3226 | } | |
064af421 BP |
3227 | } |
3228 | } | |
2e1ae200 | 3229 | /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */ |
f0fd1a17 | 3230 | ofconn_set_invalid_ttl_to_controller(ofconn, |
2e1ae200 JR |
3231 | (oh->version < OFP13_VERSION |
3232 | && flags & OFPC_INVALID_TTL_TO_CONTROLLER)); | |
ebe482fd | 3233 | |
810605a2 | 3234 | ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len)); |
0ad9b732 | 3235 | |
064af421 | 3236 | return 0; |
064af421 BP |
3237 | } |
3238 | ||
9deba63b | 3239 | /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow |
90bf1e07 BP |
3240 | * error message code for the caller to propagate upward. Otherwise, returns |
3241 | * 0. | |
3242 | * | |
3243 | * The log message mentions 'msg_type'. */ | |
3244 | static enum ofperr | |
3245 | reject_slave_controller(struct ofconn *ofconn) | |
9deba63b | 3246 | { |
1ce0a5fa | 3247 | if (ofconn_get_type(ofconn) == OFCONN_PRIMARY |
f4f1ea7e | 3248 | && ofconn_get_role(ofconn) == OFPCR12_ROLE_SLAVE) { |
20e4ec1a | 3249 | return OFPERR_OFPBRC_IS_SLAVE; |
9deba63b BP |
3250 | } else { |
3251 | return 0; | |
3252 | } | |
3253 | } | |
3254 | ||
7e9f8266 BP |
3255 | /* Checks that the 'ofpacts_len' bytes of action in 'ofpacts' are appropriate |
3256 | * for 'ofproto': | |
3257 | * | |
3258 | * - If they use a meter, then 'ofproto' has that meter configured. | |
3259 | * | |
3260 | * - If they use any groups, then 'ofproto' has that group configured. | |
3261 | * | |
3262 | * Returns 0 if successful, otherwise an OpenFlow error. */ | |
9cae45dc JR |
3263 | static enum ofperr |
3264 | ofproto_check_ofpacts(struct ofproto *ofproto, | |
7e9f8266 | 3265 | const struct ofpact ofpacts[], size_t ofpacts_len) |
9cae45dc | 3266 | { |
84d68566 | 3267 | const struct ofpact *a; |
9cae45dc JR |
3268 | uint32_t mid; |
3269 | ||
7e9f8266 BP |
3270 | mid = ofpacts_get_meter(ofpacts, ofpacts_len); |
3271 | if (mid && get_provider_meter_id(ofproto, mid) == UINT32_MAX) { | |
3272 | return OFPERR_OFPMMFC_INVALID_METER; | |
9cae45dc JR |
3273 | } |
3274 | ||
84d68566 | 3275 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
7e9f8266 BP |
3276 | if (a->type == OFPACT_GROUP |
3277 | && !ofproto_group_exists(ofproto, ofpact_get_GROUP(a)->group_id)) { | |
3278 | return OFPERR_OFPBAC_BAD_OUT_GROUP; | |
84d68566 SH |
3279 | } |
3280 | } | |
3281 | ||
9cae45dc JR |
3282 | return 0; |
3283 | } | |
3284 | ||
90bf1e07 | 3285 | static enum ofperr |
982697a4 | 3286 | handle_packet_out(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3287 | { |
64ff1d96 | 3288 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
c6a93eb7 | 3289 | struct ofputil_packet_out po; |
cf62fa4c | 3290 | struct dp_packet *payload; |
f25d0cf3 BP |
3291 | uint64_t ofpacts_stub[1024 / 8]; |
3292 | struct ofpbuf ofpacts; | |
ae412e7d | 3293 | struct flow flow; |
90bf1e07 | 3294 | enum ofperr error; |
064af421 | 3295 | |
ac51afaf BP |
3296 | COVERAGE_INC(ofproto_packet_out); |
3297 | ||
76589937 | 3298 | error = reject_slave_controller(ofconn); |
9deba63b | 3299 | if (error) { |
f25d0cf3 | 3300 | goto exit; |
9deba63b BP |
3301 | } |
3302 | ||
c6a93eb7 | 3303 | /* Decode message. */ |
f25d0cf3 | 3304 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
982697a4 | 3305 | error = ofputil_decode_packet_out(&po, oh, &ofpacts); |
064af421 | 3306 | if (error) { |
f25d0cf3 | 3307 | goto exit_free_ofpacts; |
064af421 | 3308 | } |
430dbb14 | 3309 | if (ofp_to_u16(po.in_port) >= p->max_ports |
4e022ec0 | 3310 | && ofp_to_u16(po.in_port) < ofp_to_u16(OFPP_MAX)) { |
2e1bfcb6 | 3311 | error = OFPERR_OFPBRC_BAD_PORT; |
91858960 BP |
3312 | goto exit_free_ofpacts; |
3313 | } | |
064af421 | 3314 | |
ac51afaf | 3315 | /* Get payload. */ |
c6a93eb7 BP |
3316 | if (po.buffer_id != UINT32_MAX) { |
3317 | error = ofconn_pktbuf_retrieve(ofconn, po.buffer_id, &payload, NULL); | |
3318 | if (error || !payload) { | |
f25d0cf3 | 3319 | goto exit_free_ofpacts; |
064af421 | 3320 | } |
064af421 | 3321 | } else { |
bb622f82 | 3322 | /* Ensure that the L3 header is 32-bit aligned. */ |
cf62fa4c | 3323 | payload = dp_packet_clone_data_with_headroom(po.packet, po.packet_len, 2); |
e1154f71 BP |
3324 | } |
3325 | ||
548de4dd | 3326 | /* Verify actions against packet, then send packet if successful. */ |
cf62fa4c | 3327 | flow_extract(payload, &flow); |
b5e7e61a | 3328 | flow.in_port.ofp_port = po.in_port; |
7e9f8266 | 3329 | error = ofproto_check_ofpacts(p, po.ofpacts, po.ofpacts_len); |
548de4dd BP |
3330 | if (!error) { |
3331 | error = p->ofproto_class->packet_out(p, payload, &flow, | |
3332 | po.ofpacts, po.ofpacts_len); | |
3333 | } | |
cf62fa4c | 3334 | dp_packet_delete(payload); |
abe529af | 3335 | |
f25d0cf3 BP |
3336 | exit_free_ofpacts: |
3337 | ofpbuf_uninit(&ofpacts); | |
3338 | exit: | |
abe529af | 3339 | return error; |
064af421 BP |
3340 | } |
3341 | ||
3342 | static void | |
2a6f78e0 | 3343 | update_port_config(struct ofconn *ofconn, struct ofport *port, |
9e1fd49b BP |
3344 | enum ofputil_port_config config, |
3345 | enum ofputil_port_config mask) | |
064af421 | 3346 | { |
2a6f78e0 | 3347 | enum ofputil_port_config toggle = (config ^ port->pp.config) & mask; |
abe529af | 3348 | |
2a6f78e0 BP |
3349 | if (toggle & OFPUTIL_PC_PORT_DOWN |
3350 | && (config & OFPUTIL_PC_PORT_DOWN | |
3351 | ? netdev_turn_flags_off(port->netdev, NETDEV_UP, NULL) | |
3352 | : netdev_turn_flags_on(port->netdev, NETDEV_UP, NULL))) { | |
3353 | /* We tried to bring the port up or down, but it failed, so don't | |
3354 | * update the "down" bit. */ | |
9e1fd49b | 3355 | toggle &= ~OFPUTIL_PC_PORT_DOWN; |
064af421 | 3356 | } |
abe529af | 3357 | |
2a6f78e0 BP |
3358 | if (toggle) { |
3359 | enum ofputil_port_config old_config = port->pp.config; | |
3360 | port->pp.config ^= toggle; | |
abe529af | 3361 | port->ofproto->ofproto_class->port_reconfigured(port, old_config); |
2a6f78e0 BP |
3362 | connmgr_send_port_status(port->ofproto->connmgr, ofconn, &port->pp, |
3363 | OFPPR_MODIFY); | |
064af421 BP |
3364 | } |
3365 | } | |
3366 | ||
90bf1e07 | 3367 | static enum ofperr |
d1e2cf21 | 3368 | handle_port_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3369 | { |
64ff1d96 | 3370 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
9e1fd49b | 3371 | struct ofputil_port_mod pm; |
064af421 | 3372 | struct ofport *port; |
9e1fd49b | 3373 | enum ofperr error; |
064af421 | 3374 | |
76589937 | 3375 | error = reject_slave_controller(ofconn); |
9deba63b BP |
3376 | if (error) { |
3377 | return error; | |
3378 | } | |
064af421 | 3379 | |
18cc69d9 | 3380 | error = ofputil_decode_port_mod(oh, &pm, false); |
9e1fd49b BP |
3381 | if (error) { |
3382 | return error; | |
3383 | } | |
3384 | ||
3385 | port = ofproto_get_port(p, pm.port_no); | |
064af421 | 3386 | if (!port) { |
90bf1e07 | 3387 | return OFPERR_OFPPMFC_BAD_PORT; |
9e1fd49b | 3388 | } else if (!eth_addr_equals(port->pp.hw_addr, pm.hw_addr)) { |
90bf1e07 | 3389 | return OFPERR_OFPPMFC_BAD_HW_ADDR; |
064af421 | 3390 | } else { |
2a6f78e0 | 3391 | update_port_config(ofconn, port, pm.config, pm.mask); |
9e1fd49b BP |
3392 | if (pm.advertise) { |
3393 | netdev_set_advertisements(port->netdev, pm.advertise); | |
064af421 BP |
3394 | } |
3395 | } | |
3396 | return 0; | |
3397 | } | |
3398 | ||
90bf1e07 | 3399 | static enum ofperr |
3269c562 | 3400 | handle_desc_stats_request(struct ofconn *ofconn, |
982697a4 | 3401 | const struct ofp_header *request) |
064af421 | 3402 | { |
061bfea4 BP |
3403 | static const char *default_mfr_desc = "Nicira, Inc."; |
3404 | static const char *default_hw_desc = "Open vSwitch"; | |
3405 | static const char *default_sw_desc = VERSION; | |
3406 | static const char *default_serial_desc = "None"; | |
3407 | static const char *default_dp_desc = "None"; | |
3408 | ||
64ff1d96 | 3409 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 BP |
3410 | struct ofp_desc_stats *ods; |
3411 | struct ofpbuf *msg; | |
3412 | ||
982697a4 BP |
3413 | msg = ofpraw_alloc_stats_reply(request, 0); |
3414 | ods = ofpbuf_put_zeros(msg, sizeof *ods); | |
061bfea4 BP |
3415 | ovs_strlcpy(ods->mfr_desc, p->mfr_desc ? p->mfr_desc : default_mfr_desc, |
3416 | sizeof ods->mfr_desc); | |
3417 | ovs_strlcpy(ods->hw_desc, p->hw_desc ? p->hw_desc : default_hw_desc, | |
3418 | sizeof ods->hw_desc); | |
3419 | ovs_strlcpy(ods->sw_desc, p->sw_desc ? p->sw_desc : default_sw_desc, | |
3420 | sizeof ods->sw_desc); | |
3421 | ovs_strlcpy(ods->serial_num, | |
3422 | p->serial_desc ? p->serial_desc : default_serial_desc, | |
3423 | sizeof ods->serial_num); | |
3424 | ovs_strlcpy(ods->dp_desc, p->dp_desc ? p->dp_desc : default_dp_desc, | |
3425 | sizeof ods->dp_desc); | |
b0421aa2 | 3426 | ofconn_send_reply(ofconn, msg); |
064af421 BP |
3427 | |
3428 | return 0; | |
3429 | } | |
3430 | ||
90bf1e07 | 3431 | static enum ofperr |
3269c562 | 3432 | handle_table_stats_request(struct ofconn *ofconn, |
982697a4 | 3433 | const struct ofp_header *request) |
064af421 | 3434 | { |
3c1bb396 BP |
3435 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
3436 | struct ofputil_table_features *features; | |
08d1e234 | 3437 | struct ofputil_table_stats *stats; |
3c1bb396 | 3438 | struct ofpbuf *reply; |
6c1491fb | 3439 | size_t i; |
064af421 | 3440 | |
3c1bb396 | 3441 | query_tables(ofproto, &features, &stats); |
254750ce | 3442 | |
3c1bb396 BP |
3443 | reply = ofputil_encode_table_stats_reply(request); |
3444 | for (i = 0; i < ofproto->n_tables; i++) { | |
3445 | if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) { | |
3446 | ofputil_append_table_stats_reply(reply, &stats[i], &features[i]); | |
254750ce BP |
3447 | } |
3448 | } | |
3c1bb396 | 3449 | ofconn_send_reply(ofconn, reply); |
254750ce | 3450 | |
3c1bb396 | 3451 | free(features); |
08d1e234 | 3452 | free(stats); |
307975da | 3453 | |
064af421 BP |
3454 | return 0; |
3455 | } | |
3456 | ||
3c4e10fb BP |
3457 | static enum ofperr |
3458 | handle_table_features_request(struct ofconn *ofconn, | |
3459 | const struct ofp_header *request) | |
3460 | { | |
3461 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
3462 | struct ofputil_table_features *features; | |
ca6ba700 | 3463 | struct ovs_list replies; |
3c4e10fb BP |
3464 | struct ofpbuf msg; |
3465 | size_t i; | |
3466 | ||
3467 | ofpbuf_use_const(&msg, request, ntohs(request->length)); | |
3468 | ofpraw_pull_assert(&msg); | |
6fd6ed71 | 3469 | if (msg.size || ofpmp_more(request)) { |
3c4e10fb BP |
3470 | return OFPERR_OFPTFFC_EPERM; |
3471 | } | |
3472 | ||
3473 | query_tables(ofproto, &features, NULL); | |
3474 | ||
3475 | ofpmp_init(&replies, request); | |
3476 | for (i = 0; i < ofproto->n_tables; i++) { | |
3477 | if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) { | |
3478 | ofputil_append_table_features_reply(&features[i], &replies); | |
3479 | } | |
3480 | } | |
3481 | ofconn_send_replies(ofconn, &replies); | |
3482 | ||
3483 | free(features); | |
3484 | ||
3485 | return 0; | |
3486 | } | |
3487 | ||
abaad8cf | 3488 | static void |
ca6ba700 | 3489 | append_port_stat(struct ofport *port, struct ovs_list *replies) |
abaad8cf | 3490 | { |
f8e4867e | 3491 | struct ofputil_port_stats ops = { .port_no = port->pp.port_no }; |
abaad8cf | 3492 | |
65e0be10 BP |
3493 | calc_duration(port->created, time_msec(), |
3494 | &ops.duration_sec, &ops.duration_nsec); | |
3495 | ||
d295e8e9 JP |
3496 | /* Intentionally ignore return value, since errors will set |
3497 | * 'stats' to all-1s, which is correct for OpenFlow, and | |
abaad8cf | 3498 | * netdev_get_stats() will log errors. */ |
f8e4867e SH |
3499 | ofproto_port_get_stats(port, &ops.stats); |
3500 | ||
3501 | ofputil_append_port_stat(replies, &ops); | |
abaad8cf JP |
3502 | } |
3503 | ||
70ae4f93 BP |
3504 | static void |
3505 | handle_port_request(struct ofconn *ofconn, | |
3506 | const struct ofp_header *request, ofp_port_t port_no, | |
ca6ba700 | 3507 | void (*cb)(struct ofport *, struct ovs_list *replies)) |
064af421 | 3508 | { |
70ae4f93 | 3509 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 | 3510 | struct ofport *port; |
ca6ba700 | 3511 | struct ovs_list replies; |
064af421 | 3512 | |
982697a4 | 3513 | ofpmp_init(&replies, request); |
7f05e7ab | 3514 | if (port_no != OFPP_ANY) { |
70ae4f93 | 3515 | port = ofproto_get_port(ofproto, port_no); |
abaad8cf | 3516 | if (port) { |
70ae4f93 | 3517 | cb(port, &replies); |
abaad8cf JP |
3518 | } |
3519 | } else { | |
70ae4f93 BP |
3520 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
3521 | cb(port, &replies); | |
abaad8cf | 3522 | } |
064af421 BP |
3523 | } |
3524 | ||
63f2140a | 3525 | ofconn_send_replies(ofconn, &replies); |
70ae4f93 BP |
3526 | } |
3527 | ||
3528 | static enum ofperr | |
3529 | handle_port_stats_request(struct ofconn *ofconn, | |
3530 | const struct ofp_header *request) | |
3531 | { | |
3532 | ofp_port_t port_no; | |
3533 | enum ofperr error; | |
3534 | ||
3535 | error = ofputil_decode_port_stats_request(request, &port_no); | |
3536 | if (!error) { | |
3537 | handle_port_request(ofconn, request, port_no, append_port_stat); | |
3538 | } | |
3539 | return error; | |
3540 | } | |
3541 | ||
3542 | static void | |
ca6ba700 | 3543 | append_port_desc(struct ofport *port, struct ovs_list *replies) |
70ae4f93 BP |
3544 | { |
3545 | ofputil_append_port_desc_stats_reply(&port->pp, replies); | |
064af421 BP |
3546 | } |
3547 | ||
2be393ed JP |
3548 | static enum ofperr |
3549 | handle_port_desc_stats_request(struct ofconn *ofconn, | |
982697a4 | 3550 | const struct ofp_header *request) |
2be393ed | 3551 | { |
70ae4f93 BP |
3552 | ofp_port_t port_no; |
3553 | enum ofperr error; | |
2be393ed | 3554 | |
70ae4f93 BP |
3555 | error = ofputil_decode_port_desc_stats_request(request, &port_no); |
3556 | if (!error) { | |
3557 | handle_port_request(ofconn, request, port_no, append_port_desc); | |
2be393ed | 3558 | } |
70ae4f93 | 3559 | return error; |
2be393ed JP |
3560 | } |
3561 | ||
98eaac36 JR |
3562 | static uint32_t |
3563 | hash_cookie(ovs_be64 cookie) | |
3564 | { | |
965607c8 | 3565 | return hash_uint64((OVS_FORCE uint64_t)cookie); |
98eaac36 JR |
3566 | } |
3567 | ||
3568 | static void | |
3569 | cookies_insert(struct ofproto *ofproto, struct rule *rule) | |
2c916028 | 3570 | OVS_REQUIRES(ofproto_mutex) |
98eaac36 JR |
3571 | { |
3572 | hindex_insert(&ofproto->cookies, &rule->cookie_node, | |
3573 | hash_cookie(rule->flow_cookie)); | |
3574 | } | |
3575 | ||
3576 | static void | |
3577 | cookies_remove(struct ofproto *ofproto, struct rule *rule) | |
2c916028 | 3578 | OVS_REQUIRES(ofproto_mutex) |
98eaac36 JR |
3579 | { |
3580 | hindex_remove(&ofproto->cookies, &rule->cookie_node); | |
3581 | } | |
3582 | ||
c6ebb8fb | 3583 | static void |
65e0be10 BP |
3584 | calc_duration(long long int start, long long int now, |
3585 | uint32_t *sec, uint32_t *nsec) | |
c6ebb8fb | 3586 | { |
f27f2134 | 3587 | long long int msecs = now - start; |
588cd7b5 BP |
3588 | *sec = msecs / 1000; |
3589 | *nsec = (msecs % 1000) * (1000 * 1000); | |
3590 | } | |
3591 | ||
48266274 | 3592 | /* Checks whether 'table_id' is 0xff or a valid table ID in 'ofproto'. Returns |
554764d1 SH |
3593 | * true if 'table_id' is OK, false otherwise. */ |
3594 | static bool | |
48266274 BP |
3595 | check_table_id(const struct ofproto *ofproto, uint8_t table_id) |
3596 | { | |
554764d1 | 3597 | return table_id == OFPTT_ALL || table_id < ofproto->n_tables; |
48266274 BP |
3598 | } |
3599 | ||
5c67e4af | 3600 | static struct oftable * |
d4ce8a49 | 3601 | next_visible_table(const struct ofproto *ofproto, uint8_t table_id) |
5c67e4af BP |
3602 | { |
3603 | struct oftable *table; | |
3604 | ||
3605 | for (table = &ofproto->tables[table_id]; | |
3606 | table < &ofproto->tables[ofproto->n_tables]; | |
3607 | table++) { | |
3608 | if (!(table->flags & OFTABLE_HIDDEN)) { | |
3609 | return table; | |
3610 | } | |
3611 | } | |
3612 | ||
3613 | return NULL; | |
3614 | } | |
3615 | ||
d0918789 | 3616 | static struct oftable * |
d4ce8a49 | 3617 | first_matching_table(const struct ofproto *ofproto, uint8_t table_id) |
064af421 | 3618 | { |
6c1491fb | 3619 | if (table_id == 0xff) { |
5c67e4af | 3620 | return next_visible_table(ofproto, 0); |
6c1491fb BP |
3621 | } else if (table_id < ofproto->n_tables) { |
3622 | return &ofproto->tables[table_id]; | |
a02e5331 | 3623 | } else { |
6c1491fb | 3624 | return NULL; |
a02e5331 | 3625 | } |
064af421 BP |
3626 | } |
3627 | ||
d0918789 | 3628 | static struct oftable * |
d4ce8a49 BP |
3629 | next_matching_table(const struct ofproto *ofproto, |
3630 | const struct oftable *table, uint8_t table_id) | |
6c1491fb | 3631 | { |
5c67e4af BP |
3632 | return (table_id == 0xff |
3633 | ? next_visible_table(ofproto, (table - ofproto->tables) + 1) | |
6c1491fb BP |
3634 | : NULL); |
3635 | } | |
3636 | ||
d0918789 | 3637 | /* Assigns TABLE to each oftable, in turn, that matches TABLE_ID in OFPROTO: |
6c1491fb BP |
3638 | * |
3639 | * - If TABLE_ID is 0xff, this iterates over every classifier table in | |
5c67e4af | 3640 | * OFPROTO, skipping tables marked OFTABLE_HIDDEN. |
6c1491fb BP |
3641 | * |
3642 | * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates | |
5c67e4af BP |
3643 | * only once, for that table. (This can be used to access tables marked |
3644 | * OFTABLE_HIDDEN.) | |
6c1491fb | 3645 | * |
48266274 BP |
3646 | * - Otherwise, TABLE_ID isn't valid for OFPROTO, so the loop won't be |
3647 | * entered at all. (Perhaps you should have validated TABLE_ID with | |
3648 | * check_table_id().) | |
6c1491fb BP |
3649 | * |
3650 | * All parameters are evaluated multiple times. | |
3651 | */ | |
d0918789 BP |
3652 | #define FOR_EACH_MATCHING_TABLE(TABLE, TABLE_ID, OFPROTO) \ |
3653 | for ((TABLE) = first_matching_table(OFPROTO, TABLE_ID); \ | |
3654 | (TABLE) != NULL; \ | |
3655 | (TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID)) | |
6c1491fb | 3656 | |
a9b22b7f BP |
3657 | /* Initializes 'criteria' in a straightforward way based on the other |
3658 | * parameters. | |
3659 | * | |
dd51dae2 BP |
3660 | * By default, the criteria include flows that are read-only, on the assumption |
3661 | * that the collected flows won't be modified. Call rule_criteria_require_rw() | |
3662 | * if flows will be modified. | |
3663 | * | |
a9b22b7f BP |
3664 | * For "loose" matching, the 'priority' parameter is unimportant and may be |
3665 | * supplied as 0. */ | |
3666 | static void | |
3667 | rule_criteria_init(struct rule_criteria *criteria, uint8_t table_id, | |
eb391b76 | 3668 | const struct match *match, int priority, |
a9b22b7f BP |
3669 | ovs_be64 cookie, ovs_be64 cookie_mask, |
3670 | ofp_port_t out_port, uint32_t out_group) | |
3671 | { | |
3672 | criteria->table_id = table_id; | |
3673 | cls_rule_init(&criteria->cr, match, priority); | |
3674 | criteria->cookie = cookie; | |
3675 | criteria->cookie_mask = cookie_mask; | |
3676 | criteria->out_port = out_port; | |
3677 | criteria->out_group = out_group; | |
dd51dae2 BP |
3678 | |
3679 | /* We ordinarily want to skip hidden rules, but there has to be a way for | |
3680 | * code internal to OVS to modify and delete them, so if the criteria | |
3681 | * specify a priority that can only be for a hidden flow, then allow hidden | |
3682 | * rules to be selected. (This doesn't allow OpenFlow clients to meddle | |
3683 | * with hidden flows because OpenFlow uses only a 16-bit field to specify | |
3684 | * priority.) */ | |
3685 | criteria->include_hidden = priority > UINT16_MAX; | |
3686 | ||
3687 | /* We assume that the criteria are being used to collect flows for reading | |
3688 | * but not modification. Thus, we should collect read-only flows. */ | |
3689 | criteria->include_readonly = true; | |
3690 | } | |
3691 | ||
3692 | /* By default, criteria initialized by rule_criteria_init() will match flows | |
3693 | * that are read-only, on the assumption that the collected flows won't be | |
3694 | * modified. Call this function to match only flows that are be modifiable. | |
3695 | * | |
3696 | * Specify 'can_write_readonly' as false in ordinary circumstances, true if the | |
3697 | * caller has special privileges that allow it to modify even "read-only" | |
3698 | * flows. */ | |
3699 | static void | |
3700 | rule_criteria_require_rw(struct rule_criteria *criteria, | |
3701 | bool can_write_readonly) | |
3702 | { | |
3703 | criteria->include_readonly = can_write_readonly; | |
a9b22b7f BP |
3704 | } |
3705 | ||
3706 | static void | |
3707 | rule_criteria_destroy(struct rule_criteria *criteria) | |
3708 | { | |
3709 | cls_rule_destroy(&criteria->cr); | |
3710 | } | |
3711 | ||
a8e547c1 BP |
3712 | void |
3713 | rule_collection_init(struct rule_collection *rules) | |
3714 | { | |
3715 | rules->rules = rules->stub; | |
3716 | rules->n = 0; | |
3717 | rules->capacity = ARRAY_SIZE(rules->stub); | |
3718 | } | |
3719 | ||
3720 | void | |
3721 | rule_collection_add(struct rule_collection *rules, struct rule *rule) | |
3722 | { | |
3723 | if (rules->n >= rules->capacity) { | |
3724 | size_t old_size, new_size; | |
3725 | ||
3726 | old_size = rules->capacity * sizeof *rules->rules; | |
3727 | rules->capacity *= 2; | |
3728 | new_size = rules->capacity * sizeof *rules->rules; | |
3729 | ||
3730 | if (rules->rules == rules->stub) { | |
3731 | rules->rules = xmalloc(new_size); | |
3732 | memcpy(rules->rules, rules->stub, old_size); | |
3733 | } else { | |
3734 | rules->rules = xrealloc(rules->rules, new_size); | |
3735 | } | |
3736 | } | |
3737 | ||
3738 | rules->rules[rules->n++] = rule; | |
3739 | } | |
3740 | ||
15aaf599 BP |
3741 | void |
3742 | rule_collection_ref(struct rule_collection *rules) | |
3743 | OVS_REQUIRES(ofproto_mutex) | |
3744 | { | |
3745 | size_t i; | |
3746 | ||
3747 | for (i = 0; i < rules->n; i++) { | |
3748 | ofproto_rule_ref(rules->rules[i]); | |
3749 | } | |
3750 | } | |
3751 | ||
3752 | void | |
3753 | rule_collection_unref(struct rule_collection *rules) | |
3754 | { | |
3755 | size_t i; | |
3756 | ||
3757 | for (i = 0; i < rules->n; i++) { | |
3758 | ofproto_rule_unref(rules->rules[i]); | |
3759 | } | |
3760 | } | |
3761 | ||
a8e547c1 BP |
3762 | void |
3763 | rule_collection_destroy(struct rule_collection *rules) | |
3764 | { | |
3765 | if (rules->rules != rules->stub) { | |
3766 | free(rules->rules); | |
3767 | } | |
bfd3dbf6 BP |
3768 | |
3769 | /* Make repeated destruction harmless. */ | |
3770 | rule_collection_init(rules); | |
a8e547c1 BP |
3771 | } |
3772 | ||
dd51dae2 BP |
3773 | /* Checks whether 'rule' matches 'c' and, if so, adds it to 'rules'. This |
3774 | * function verifies most of the criteria in 'c' itself, but the caller must | |
3775 | * check 'c->cr' itself. | |
3776 | * | |
3777 | * Increments '*n_readonly' if 'rule' wasn't added because it's read-only (and | |
b20f4073 BP |
3778 | * 'c' only includes modifiable rules). */ |
3779 | static void | |
a9b22b7f | 3780 | collect_rule(struct rule *rule, const struct rule_criteria *c, |
dd51dae2 | 3781 | struct rule_collection *rules, size_t *n_readonly) |
15aaf599 | 3782 | OVS_REQUIRES(ofproto_mutex) |
6c1d7642 | 3783 | { |
dd51dae2 BP |
3784 | if ((c->table_id == rule->table_id || c->table_id == 0xff) |
3785 | && ofproto_rule_has_out_port(rule, c->out_port) | |
3786 | && ofproto_rule_has_out_group(rule, c->out_group) | |
3787 | && !((rule->flow_cookie ^ c->cookie) & c->cookie_mask) | |
3788 | && (!rule_is_hidden(rule) || c->include_hidden)) { | |
dd51dae2 | 3789 | /* Rule matches all the criteria... */ |
834fe5cb | 3790 | if (!rule_is_readonly(rule) || c->include_readonly) { |
dd51dae2 | 3791 | /* ...add it. */ |
a8e547c1 | 3792 | rule_collection_add(rules, rule); |
dd51dae2 BP |
3793 | } else { |
3794 | /* ...except it's read-only. */ | |
3795 | ++*n_readonly; | |
6c1d7642 | 3796 | } |
6c1d7642 BP |
3797 | } |
3798 | } | |
3799 | ||
a9b22b7f BP |
3800 | /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches |
3801 | * on classifiers rules are done in the "loose" way required for OpenFlow | |
3802 | * OFPFC_MODIFY and OFPFC_DELETE requests. Puts the selected rules on list | |
9ed18e46 BP |
3803 | * 'rules'. |
3804 | * | |
9ed18e46 | 3805 | * Returns 0 on success, otherwise an OpenFlow error code. */ |
90bf1e07 | 3806 | static enum ofperr |
a9b22b7f | 3807 | collect_rules_loose(struct ofproto *ofproto, |
a8e547c1 BP |
3808 | const struct rule_criteria *criteria, |
3809 | struct rule_collection *rules) | |
15aaf599 | 3810 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 3811 | { |
d0918789 | 3812 | struct oftable *table; |
554764d1 | 3813 | enum ofperr error = 0; |
dd51dae2 | 3814 | size_t n_readonly = 0; |
48266274 | 3815 | |
a8e547c1 BP |
3816 | rule_collection_init(rules); |
3817 | ||
554764d1 SH |
3818 | if (!check_table_id(ofproto, criteria->table_id)) { |
3819 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
a8e547c1 | 3820 | goto exit; |
48266274 | 3821 | } |
9ed18e46 | 3822 | |
b8266395 | 3823 | if (criteria->cookie_mask == OVS_BE64_MAX) { |
98eaac36 JR |
3824 | struct rule *rule; |
3825 | ||
a9b22b7f BP |
3826 | HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node, |
3827 | hash_cookie(criteria->cookie), | |
98eaac36 | 3828 | &ofproto->cookies) { |
a9b22b7f | 3829 | if (cls_rule_is_loose_match(&rule->cr, &criteria->cr.match)) { |
b20f4073 | 3830 | collect_rule(rule, criteria, rules, &n_readonly); |
98eaac36 JR |
3831 | } |
3832 | } | |
6c1d7642 | 3833 | } else { |
a9b22b7f | 3834 | FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) { |
6c1d7642 | 3835 | struct rule *rule; |
9ed18e46 | 3836 | |
5f0476ce | 3837 | CLS_FOR_EACH_TARGET (rule, cr, &table->cls, &criteria->cr) { |
b20f4073 | 3838 | collect_rule(rule, criteria, rules, &n_readonly); |
9ed18e46 BP |
3839 | } |
3840 | } | |
3841 | } | |
48d28ac1 | 3842 | |
a8e547c1 | 3843 | exit: |
dd51dae2 BP |
3844 | if (!error && !rules->n && n_readonly) { |
3845 | /* We didn't find any rules to modify. We did find some read-only | |
3846 | * rules that we're not allowed to modify, so report that. */ | |
3847 | error = OFPERR_OFPBRC_EPERM; | |
3848 | } | |
a8e547c1 BP |
3849 | if (error) { |
3850 | rule_collection_destroy(rules); | |
3851 | } | |
48d28ac1 | 3852 | return error; |
9ed18e46 BP |
3853 | } |
3854 | ||
a9b22b7f BP |
3855 | /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches |
3856 | * on classifiers rules are done in the "strict" way required for OpenFlow | |
3857 | * OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests. Puts the selected | |
3858 | * rules on list 'rules'. | |
9ed18e46 | 3859 | * |
9ed18e46 | 3860 | * Returns 0 on success, otherwise an OpenFlow error code. */ |
90bf1e07 | 3861 | static enum ofperr |
a9b22b7f | 3862 | collect_rules_strict(struct ofproto *ofproto, |
a8e547c1 BP |
3863 | const struct rule_criteria *criteria, |
3864 | struct rule_collection *rules) | |
15aaf599 | 3865 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 3866 | { |
d0918789 | 3867 | struct oftable *table; |
dd51dae2 | 3868 | size_t n_readonly = 0; |
554764d1 | 3869 | int error = 0; |
48266274 | 3870 | |
a8e547c1 BP |
3871 | rule_collection_init(rules); |
3872 | ||
554764d1 SH |
3873 | if (!check_table_id(ofproto, criteria->table_id)) { |
3874 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
a8e547c1 | 3875 | goto exit; |
48266274 | 3876 | } |
9ed18e46 | 3877 | |
b8266395 | 3878 | if (criteria->cookie_mask == OVS_BE64_MAX) { |
98eaac36 JR |
3879 | struct rule *rule; |
3880 | ||
a9b22b7f BP |
3881 | HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node, |
3882 | hash_cookie(criteria->cookie), | |
98eaac36 | 3883 | &ofproto->cookies) { |
a9b22b7f | 3884 | if (cls_rule_equal(&rule->cr, &criteria->cr)) { |
b20f4073 | 3885 | collect_rule(rule, criteria, rules, &n_readonly); |
98eaac36 JR |
3886 | } |
3887 | } | |
6c1d7642 | 3888 | } else { |
a9b22b7f | 3889 | FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) { |
6c1d7642 | 3890 | struct rule *rule; |
9ed18e46 | 3891 | |
a9b22b7f BP |
3892 | rule = rule_from_cls_rule(classifier_find_rule_exactly( |
3893 | &table->cls, &criteria->cr)); | |
6c1d7642 | 3894 | if (rule) { |
b20f4073 | 3895 | collect_rule(rule, criteria, rules, &n_readonly); |
9ed18e46 BP |
3896 | } |
3897 | } | |
3898 | } | |
48d28ac1 | 3899 | |
a8e547c1 | 3900 | exit: |
b20f4073 BP |
3901 | if (!error && !rules->n && n_readonly) { |
3902 | /* We didn't find any rules to modify. We did find some read-only | |
3903 | * rules that we're not allowed to modify, so report that. */ | |
3904 | error = OFPERR_OFPBRC_EPERM; | |
3905 | } | |
a8e547c1 BP |
3906 | if (error) { |
3907 | rule_collection_destroy(rules); | |
3908 | } | |
6c1d7642 | 3909 | return error; |
9ed18e46 BP |
3910 | } |
3911 | ||
f27f2134 BP |
3912 | /* Returns 'age_ms' (a duration in milliseconds), converted to seconds and |
3913 | * forced into the range of a uint16_t. */ | |
3914 | static int | |
3915 | age_secs(long long int age_ms) | |
3916 | { | |
3917 | return (age_ms < 0 ? 0 | |
3918 | : age_ms >= UINT16_MAX * 1000 ? UINT16_MAX | |
3919 | : (unsigned int) age_ms / 1000); | |
3920 | } | |
3921 | ||
90bf1e07 | 3922 | static enum ofperr |
63f2140a | 3923 | handle_flow_stats_request(struct ofconn *ofconn, |
982697a4 | 3924 | const struct ofp_header *request) |
15aaf599 | 3925 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 3926 | { |
64ff1d96 | 3927 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 3928 | struct ofputil_flow_stats_request fsr; |
a9b22b7f | 3929 | struct rule_criteria criteria; |
a8e547c1 | 3930 | struct rule_collection rules; |
ca6ba700 | 3931 | struct ovs_list replies; |
90bf1e07 | 3932 | enum ofperr error; |
a8e547c1 | 3933 | size_t i; |
09246b99 | 3934 | |
982697a4 | 3935 | error = ofputil_decode_flow_stats_request(&fsr, request); |
09246b99 BP |
3936 | if (error) { |
3937 | return error; | |
3938 | } | |
3939 | ||
a9b22b7f BP |
3940 | rule_criteria_init(&criteria, fsr.table_id, &fsr.match, 0, fsr.cookie, |
3941 | fsr.cookie_mask, fsr.out_port, fsr.out_group); | |
15aaf599 BP |
3942 | |
3943 | ovs_mutex_lock(&ofproto_mutex); | |
a9b22b7f BP |
3944 | error = collect_rules_loose(ofproto, &criteria, &rules); |
3945 | rule_criteria_destroy(&criteria); | |
15aaf599 BP |
3946 | if (!error) { |
3947 | rule_collection_ref(&rules); | |
3948 | } | |
3949 | ovs_mutex_unlock(&ofproto_mutex); | |
3950 | ||
9ed18e46 BP |
3951 | if (error) { |
3952 | return error; | |
3953 | } | |
5ecc9d81 | 3954 | |
982697a4 | 3955 | ofpmp_init(&replies, request); |
a8e547c1 BP |
3956 | for (i = 0; i < rules.n; i++) { |
3957 | struct rule *rule = rules.rules[i]; | |
f27f2134 | 3958 | long long int now = time_msec(); |
9ed18e46 | 3959 | struct ofputil_flow_stats fs; |
15aaf599 | 3960 | long long int created, used, modified; |
dc723c44 | 3961 | const struct rule_actions *actions; |
15aaf599 | 3962 | enum ofputil_flow_mod_flags flags; |
a3779dbc | 3963 | |
d10976b7 | 3964 | ovs_mutex_lock(&rule->mutex); |
15aaf599 | 3965 | fs.cookie = rule->flow_cookie; |
a3779dbc EJ |
3966 | fs.idle_timeout = rule->idle_timeout; |
3967 | fs.hard_timeout = rule->hard_timeout; | |
ca26eb44 | 3968 | fs.importance = rule->importance; |
15aaf599 | 3969 | created = rule->created; |
15aaf599 | 3970 | modified = rule->modified; |
06a0f3e2 | 3971 | actions = rule_get_actions(rule); |
15aaf599 | 3972 | flags = rule->flags; |
d10976b7 | 3973 | ovs_mutex_unlock(&rule->mutex); |
a3779dbc | 3974 | |
dc437090 JR |
3975 | ofproto->ofproto_class->rule_get_stats(rule, &fs.packet_count, |
3976 | &fs.byte_count, &used); | |
3977 | ||
15aaf599 BP |
3978 | minimatch_expand(&rule->cr.match, &fs.match); |
3979 | fs.table_id = rule->table_id; | |
3980 | calc_duration(created, now, &fs.duration_sec, &fs.duration_nsec); | |
3981 | fs.priority = rule->cr.priority; | |
3982 | fs.idle_age = age_secs(now - used); | |
3983 | fs.hard_age = age_secs(now - modified); | |
15aaf599 BP |
3984 | fs.ofpacts = actions->ofpacts; |
3985 | fs.ofpacts_len = actions->ofpacts_len; | |
3f517bcd | 3986 | |
15aaf599 | 3987 | fs.flags = flags; |
9ed18e46 | 3988 | ofputil_append_flow_stats_reply(&fs, &replies); |
3c4486a5 | 3989 | } |
15aaf599 BP |
3990 | |
3991 | rule_collection_unref(&rules); | |
a8e547c1 BP |
3992 | rule_collection_destroy(&rules); |
3993 | ||
63f2140a | 3994 | ofconn_send_replies(ofconn, &replies); |
5ecc9d81 | 3995 | |
09246b99 BP |
3996 | return 0; |
3997 | } | |
3998 | ||
4f2cad2c | 3999 | static void |
3394b5b6 | 4000 | flow_stats_ds(struct rule *rule, struct ds *results) |
4f2cad2c | 4001 | { |
4f2cad2c | 4002 | uint64_t packet_count, byte_count; |
dc723c44 | 4003 | const struct rule_actions *actions; |
dc437090 | 4004 | long long int created, used; |
4f2cad2c | 4005 | |
dc437090 JR |
4006 | rule->ofproto->ofproto_class->rule_get_stats(rule, &packet_count, |
4007 | &byte_count, &used); | |
4f2cad2c | 4008 | |
15aaf599 | 4009 | ovs_mutex_lock(&rule->mutex); |
06a0f3e2 | 4010 | actions = rule_get_actions(rule); |
15aaf599 BP |
4011 | created = rule->created; |
4012 | ovs_mutex_unlock(&rule->mutex); | |
4013 | ||
6c1491fb BP |
4014 | if (rule->table_id != 0) { |
4015 | ds_put_format(results, "table_id=%"PRIu8", ", rule->table_id); | |
4016 | } | |
15aaf599 | 4017 | ds_put_format(results, "duration=%llds, ", (time_msec() - created) / 1000); |
4f2cad2c JP |
4018 | ds_put_format(results, "n_packets=%"PRIu64", ", packet_count); |
4019 | ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count); | |
cb833cf6 | 4020 | cls_rule_format(&rule->cr, results); |
a5df0e72 | 4021 | ds_put_char(results, ','); |
15aaf599 | 4022 | |
455ecd77 | 4023 | ds_put_cstr(results, "actions="); |
15aaf599 BP |
4024 | ofpacts_format(actions->ofpacts, actions->ofpacts_len, results); |
4025 | ||
4f2cad2c JP |
4026 | ds_put_cstr(results, "\n"); |
4027 | } | |
4028 | ||
d295e8e9 | 4029 | /* Adds a pretty-printed description of all flows to 'results', including |
ee8b231c | 4030 | * hidden flows (e.g., set up by in-band control). */ |
4f2cad2c JP |
4031 | void |
4032 | ofproto_get_all_flows(struct ofproto *p, struct ds *results) | |
4033 | { | |
d0918789 | 4034 | struct oftable *table; |
6c1491fb | 4035 | |
d0918789 | 4036 | OFPROTO_FOR_EACH_TABLE (table, p) { |
6c1491fb | 4037 | struct rule *rule; |
064af421 | 4038 | |
5f0476ce | 4039 | CLS_FOR_EACH (rule, cr, &table->cls) { |
6c1491fb BP |
4040 | flow_stats_ds(rule, results); |
4041 | } | |
064af421 | 4042 | } |
064af421 BP |
4043 | } |
4044 | ||
b5827b24 BP |
4045 | /* Obtains the NetFlow engine type and engine ID for 'ofproto' into |
4046 | * '*engine_type' and '*engine_id', respectively. */ | |
4047 | void | |
4048 | ofproto_get_netflow_ids(const struct ofproto *ofproto, | |
4049 | uint8_t *engine_type, uint8_t *engine_id) | |
4050 | { | |
abe529af | 4051 | ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id); |
b5827b24 BP |
4052 | } |
4053 | ||
8f5514fe AW |
4054 | /* Checks the status change of CFM on 'ofport'. |
4055 | * | |
4056 | * Returns true if 'ofproto_class' does not support 'cfm_status_changed'. */ | |
4057 | bool | |
4058 | ofproto_port_cfm_status_changed(struct ofproto *ofproto, ofp_port_t ofp_port) | |
4059 | { | |
4060 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
4061 | return (ofport && ofproto->ofproto_class->cfm_status_changed | |
4062 | ? ofproto->ofproto_class->cfm_status_changed(ofport) | |
4063 | : true); | |
4064 | } | |
4065 | ||
88bf179a AW |
4066 | /* Checks the status of CFM configured on 'ofp_port' within 'ofproto'. |
4067 | * Returns 0 if the port's CFM status was successfully stored into | |
4068 | * '*status'. Returns positive errno if the port did not have CFM | |
8f5514fe | 4069 | * configured. |
9a9e3786 | 4070 | * |
88bf179a AW |
4071 | * The caller must provide and own '*status', and must free 'status->rmps'. |
4072 | * '*status' is indeterminate if the return value is non-zero. */ | |
4073 | int | |
4e022ec0 | 4074 | ofproto_port_get_cfm_status(const struct ofproto *ofproto, ofp_port_t ofp_port, |
685acfd9 | 4075 | struct cfm_status *status) |
3967a833 MM |
4076 | { |
4077 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
88bf179a AW |
4078 | return (ofport && ofproto->ofproto_class->get_cfm_status |
4079 | ? ofproto->ofproto_class->get_cfm_status(ofport, status) | |
4080 | : EOPNOTSUPP); | |
3967a833 MM |
4081 | } |
4082 | ||
90bf1e07 | 4083 | static enum ofperr |
76c93b22 | 4084 | handle_aggregate_stats_request(struct ofconn *ofconn, |
982697a4 | 4085 | const struct ofp_header *oh) |
15aaf599 | 4086 | OVS_EXCLUDED(ofproto_mutex) |
27d34fce | 4087 | { |
76c93b22 | 4088 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 4089 | struct ofputil_flow_stats_request request; |
76c93b22 | 4090 | struct ofputil_aggregate_stats stats; |
5e9d0469 | 4091 | bool unknown_packets, unknown_bytes; |
a9b22b7f | 4092 | struct rule_criteria criteria; |
a8e547c1 | 4093 | struct rule_collection rules; |
76c93b22 | 4094 | struct ofpbuf *reply; |
90bf1e07 | 4095 | enum ofperr error; |
a8e547c1 | 4096 | size_t i; |
27d34fce | 4097 | |
982697a4 | 4098 | error = ofputil_decode_flow_stats_request(&request, oh); |
76c93b22 BP |
4099 | if (error) { |
4100 | return error; | |
4101 | } | |
5ecc9d81 | 4102 | |
a9b22b7f BP |
4103 | rule_criteria_init(&criteria, request.table_id, &request.match, 0, |
4104 | request.cookie, request.cookie_mask, | |
4105 | request.out_port, request.out_group); | |
15aaf599 BP |
4106 | |
4107 | ovs_mutex_lock(&ofproto_mutex); | |
a9b22b7f BP |
4108 | error = collect_rules_loose(ofproto, &criteria, &rules); |
4109 | rule_criteria_destroy(&criteria); | |
15aaf599 BP |
4110 | if (!error) { |
4111 | rule_collection_ref(&rules); | |
4112 | } | |
4113 | ovs_mutex_unlock(&ofproto_mutex); | |
4114 | ||
9ed18e46 BP |
4115 | if (error) { |
4116 | return error; | |
4117 | } | |
3c4486a5 | 4118 | |
9ed18e46 | 4119 | memset(&stats, 0, sizeof stats); |
5e9d0469 | 4120 | unknown_packets = unknown_bytes = false; |
a8e547c1 BP |
4121 | for (i = 0; i < rules.n; i++) { |
4122 | struct rule *rule = rules.rules[i]; | |
9ed18e46 BP |
4123 | uint64_t packet_count; |
4124 | uint64_t byte_count; | |
dc437090 | 4125 | long long int used; |
5ecc9d81 | 4126 | |
9ed18e46 | 4127 | ofproto->ofproto_class->rule_get_stats(rule, &packet_count, |
dc437090 | 4128 | &byte_count, &used); |
5ecc9d81 | 4129 | |
5e9d0469 BP |
4130 | if (packet_count == UINT64_MAX) { |
4131 | unknown_packets = true; | |
4132 | } else { | |
4133 | stats.packet_count += packet_count; | |
4134 | } | |
4135 | ||
4136 | if (byte_count == UINT64_MAX) { | |
4137 | unknown_bytes = true; | |
4138 | } else { | |
4139 | stats.byte_count += byte_count; | |
4140 | } | |
4141 | ||
9ed18e46 | 4142 | stats.flow_count++; |
3c4486a5 | 4143 | } |
5e9d0469 BP |
4144 | if (unknown_packets) { |
4145 | stats.packet_count = UINT64_MAX; | |
4146 | } | |
4147 | if (unknown_bytes) { | |
4148 | stats.byte_count = UINT64_MAX; | |
4149 | } | |
27d34fce | 4150 | |
15aaf599 | 4151 | rule_collection_unref(&rules); |
a8e547c1 BP |
4152 | rule_collection_destroy(&rules); |
4153 | ||
982697a4 | 4154 | reply = ofputil_encode_aggregate_stats_reply(&stats, oh); |
76c93b22 | 4155 | ofconn_send_reply(ofconn, reply); |
09246b99 BP |
4156 | |
4157 | return 0; | |
4158 | } | |
4159 | ||
c1c9c9c4 | 4160 | struct queue_stats_cbdata { |
ca0f572c | 4161 | struct ofport *ofport; |
ca6ba700 | 4162 | struct ovs_list replies; |
6dc34a0d | 4163 | long long int now; |
c1c9c9c4 BP |
4164 | }; |
4165 | ||
4166 | static void | |
db9220c3 | 4167 | put_queue_stats(struct queue_stats_cbdata *cbdata, uint32_t queue_id, |
c1c9c9c4 BP |
4168 | const struct netdev_queue_stats *stats) |
4169 | { | |
6dc34a0d | 4170 | struct ofputil_queue_stats oqs; |
c1c9c9c4 | 4171 | |
6dc34a0d BP |
4172 | oqs.port_no = cbdata->ofport->pp.port_no; |
4173 | oqs.queue_id = queue_id; | |
4174 | oqs.tx_bytes = stats->tx_bytes; | |
4175 | oqs.tx_packets = stats->tx_packets; | |
4176 | oqs.tx_errors = stats->tx_errors; | |
4177 | if (stats->created != LLONG_MIN) { | |
4178 | calc_duration(stats->created, cbdata->now, | |
4179 | &oqs.duration_sec, &oqs.duration_nsec); | |
4180 | } else { | |
4181 | oqs.duration_sec = oqs.duration_nsec = UINT32_MAX; | |
4182 | } | |
64626975 | 4183 | ofputil_append_queue_stat(&cbdata->replies, &oqs); |
c1c9c9c4 BP |
4184 | } |
4185 | ||
4186 | static void | |
db9220c3 | 4187 | handle_queue_stats_dump_cb(uint32_t queue_id, |
c1c9c9c4 BP |
4188 | struct netdev_queue_stats *stats, |
4189 | void *cbdata_) | |
4190 | { | |
4191 | struct queue_stats_cbdata *cbdata = cbdata_; | |
4192 | ||
4193 | put_queue_stats(cbdata, queue_id, stats); | |
4194 | } | |
4195 | ||
0414d158 | 4196 | static enum ofperr |
ca0f572c | 4197 | handle_queue_stats_for_port(struct ofport *port, uint32_t queue_id, |
c1c9c9c4 BP |
4198 | struct queue_stats_cbdata *cbdata) |
4199 | { | |
ca0f572c | 4200 | cbdata->ofport = port; |
c1c9c9c4 BP |
4201 | if (queue_id == OFPQ_ALL) { |
4202 | netdev_dump_queue_stats(port->netdev, | |
4203 | handle_queue_stats_dump_cb, cbdata); | |
4204 | } else { | |
4205 | struct netdev_queue_stats stats; | |
4206 | ||
1ac788f6 BP |
4207 | if (!netdev_get_queue_stats(port->netdev, queue_id, &stats)) { |
4208 | put_queue_stats(cbdata, queue_id, &stats); | |
0414d158 BP |
4209 | } else { |
4210 | return OFPERR_OFPQOFC_BAD_QUEUE; | |
1ac788f6 | 4211 | } |
c1c9c9c4 | 4212 | } |
0414d158 | 4213 | return 0; |
c1c9c9c4 BP |
4214 | } |
4215 | ||
90bf1e07 | 4216 | static enum ofperr |
63f2140a | 4217 | handle_queue_stats_request(struct ofconn *ofconn, |
982697a4 | 4218 | const struct ofp_header *rq) |
c1c9c9c4 | 4219 | { |
64ff1d96 | 4220 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
c1c9c9c4 | 4221 | struct queue_stats_cbdata cbdata; |
0414d158 | 4222 | struct ofport *port; |
0414d158 | 4223 | enum ofperr error; |
64626975 | 4224 | struct ofputil_queue_stats_request oqsr; |
c1c9c9c4 | 4225 | |
c1c9c9c4 BP |
4226 | COVERAGE_INC(ofproto_queue_req); |
4227 | ||
982697a4 | 4228 | ofpmp_init(&cbdata.replies, rq); |
6dc34a0d | 4229 | cbdata.now = time_msec(); |
c1c9c9c4 | 4230 | |
64626975 SH |
4231 | error = ofputil_decode_queue_stats_request(rq, &oqsr); |
4232 | if (error) { | |
4233 | return error; | |
4234 | } | |
4235 | ||
7f05e7ab | 4236 | if (oqsr.port_no == OFPP_ANY) { |
0414d158 | 4237 | error = OFPERR_OFPQOFC_BAD_QUEUE; |
4e8e4213 | 4238 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
64626975 | 4239 | if (!handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata)) { |
0414d158 BP |
4240 | error = 0; |
4241 | } | |
c1c9c9c4 | 4242 | } |
0414d158 | 4243 | } else { |
64626975 | 4244 | port = ofproto_get_port(ofproto, oqsr.port_no); |
0414d158 | 4245 | error = (port |
64626975 | 4246 | ? handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata) |
0414d158 BP |
4247 | : OFPERR_OFPQOFC_BAD_PORT); |
4248 | } | |
4249 | if (!error) { | |
4250 | ofconn_send_replies(ofconn, &cbdata.replies); | |
c1c9c9c4 | 4251 | } else { |
63f2140a | 4252 | ofpbuf_list_delete(&cbdata.replies); |
c1c9c9c4 | 4253 | } |
c1c9c9c4 | 4254 | |
0414d158 | 4255 | return error; |
c1c9c9c4 | 4256 | } |
7ee20df1 | 4257 | |
2e31a9b8 | 4258 | static enum ofperr |
834fe5cb | 4259 | evict_rules_from_table(struct oftable *table, unsigned int extra_space) |
15aaf599 | 4260 | OVS_REQUIRES(ofproto_mutex) |
2e31a9b8 | 4261 | { |
802f84ff JR |
4262 | enum ofperr error = 0; |
4263 | struct rule_collection rules; | |
4264 | unsigned int count = classifier_count(&table->cls) + extra_space; | |
4265 | unsigned int max_flows = table->max_flows; | |
4266 | ||
4267 | rule_collection_init(&rules); | |
4268 | ||
4269 | while (count-- > max_flows) { | |
2e31a9b8 | 4270 | struct rule *rule; |
8037acb4 | 4271 | |
2e31a9b8 | 4272 | if (!choose_rule_to_evict(table, &rule)) { |
802f84ff JR |
4273 | error = OFPERR_OFPFMFC_TABLE_FULL; |
4274 | break; | |
2e31a9b8 | 4275 | } else { |
802f84ff JR |
4276 | eviction_group_remove_rule(rule); |
4277 | rule_collection_add(&rules, rule); | |
2e31a9b8 | 4278 | } |
8037acb4 | 4279 | } |
802f84ff JR |
4280 | delete_flows__(&rules, OFPRR_EVICTION, NULL); |
4281 | rule_collection_destroy(&rules); | |
2e31a9b8 | 4282 | |
802f84ff | 4283 | return error; |
8037acb4 BP |
4284 | } |
4285 | ||
18080541 BP |
4286 | static bool |
4287 | is_conjunction(const struct ofpact *ofpacts, size_t ofpacts_len) | |
4288 | { | |
4289 | return ofpacts_len > 0 && ofpacts->type == OFPACT_CONJUNCTION; | |
4290 | } | |
4291 | ||
4292 | static void | |
4293 | get_conjunctions(const struct ofputil_flow_mod *fm, | |
4294 | struct cls_conjunction **conjsp, size_t *n_conjsp) | |
4295 | OVS_REQUIRES(ofproto_mutex) | |
4296 | { | |
4297 | struct cls_conjunction *conjs = NULL; | |
4298 | int n_conjs = 0; | |
4299 | ||
4300 | if (is_conjunction(fm->ofpacts, fm->ofpacts_len)) { | |
4301 | const struct ofpact *ofpact; | |
4302 | int i; | |
4303 | ||
4304 | n_conjs = 0; | |
4305 | OFPACT_FOR_EACH (ofpact, fm->ofpacts, fm->ofpacts_len) { | |
4306 | n_conjs++; | |
4307 | } | |
4308 | ||
4309 | conjs = xzalloc(n_conjs * sizeof *conjs); | |
4310 | i = 0; | |
4311 | OFPACT_FOR_EACH (ofpact, fm->ofpacts, fm->ofpacts_len) { | |
4312 | struct ofpact_conjunction *oc = ofpact_get_CONJUNCTION(ofpact); | |
4313 | conjs[i].clause = oc->clause; | |
4314 | conjs[i].n_clauses = oc->n_clauses; | |
4315 | conjs[i].id = oc->id; | |
4316 | i++; | |
4317 | } | |
4318 | } | |
4319 | ||
4320 | *conjsp = conjs; | |
4321 | *n_conjsp = n_conjs; | |
4322 | } | |
4323 | ||
4324 | static void | |
4325 | set_conjunctions(struct rule *rule, const struct cls_conjunction *conjs, | |
4326 | size_t n_conjs) | |
4327 | OVS_REQUIRES(ofproto_mutex) | |
4328 | { | |
4329 | struct cls_rule *cr = CONST_CAST(struct cls_rule *, &rule->cr); | |
4330 | ||
4331 | cls_rule_set_conjunctions(cr, conjs, n_conjs); | |
4332 | } | |
4333 | ||
79eee1eb BP |
4334 | /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT |
4335 | * in which no matching flow already exists in the flow table. | |
4336 | * | |
4337 | * Adds the flow specified by 'ofm', which is followed by 'n_actions' | |
75a75043 | 4338 | * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow |
90bf1e07 BP |
4339 | * error code on failure, or OFPROTO_POSTPONE if the operation cannot be |
4340 | * initiated now but may be retried later. | |
79eee1eb | 4341 | * |
2509616e | 4342 | * The caller retains ownership of 'fm->ofpacts'. |
f25d0cf3 | 4343 | * |
79eee1eb BP |
4344 | * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id, |
4345 | * if any. */ | |
90bf1e07 | 4346 | static enum ofperr |
baae3d02 BP |
4347 | add_flow(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4348 | const struct flow_mod_requester *req) | |
15aaf599 | 4349 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 4350 | { |
d0918789 | 4351 | struct oftable *table; |
8037acb4 | 4352 | struct cls_rule cr; |
064af421 | 4353 | struct rule *rule; |
5a361239 | 4354 | uint8_t table_id; |
554764d1 | 4355 | int error = 0; |
064af421 | 4356 | |
554764d1 SH |
4357 | if (!check_table_id(ofproto, fm->table_id)) { |
4358 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
48266274 BP |
4359 | return error; |
4360 | } | |
4361 | ||
7ee20df1 BP |
4362 | /* Pick table. */ |
4363 | if (fm->table_id == 0xff) { | |
13521ff5 | 4364 | if (ofproto->ofproto_class->rule_choose_table) { |
81a76618 BP |
4365 | error = ofproto->ofproto_class->rule_choose_table(ofproto, |
4366 | &fm->match, | |
7ee20df1 BP |
4367 | &table_id); |
4368 | if (error) { | |
4369 | return error; | |
4370 | } | |
cb22974d | 4371 | ovs_assert(table_id < ofproto->n_tables); |
7ee20df1 | 4372 | } else { |
5a361239 | 4373 | table_id = 0; |
7ee20df1 BP |
4374 | } |
4375 | } else if (fm->table_id < ofproto->n_tables) { | |
5a361239 | 4376 | table_id = fm->table_id; |
7ee20df1 | 4377 | } else { |
c22c56bd | 4378 | return OFPERR_OFPBRC_BAD_TABLE_ID; |
064af421 BP |
4379 | } |
4380 | ||
5a361239 | 4381 | table = &ofproto->tables[table_id]; |
834fe5cb BP |
4382 | if (table->flags & OFTABLE_READONLY |
4383 | && !(fm->flags & OFPUTIL_FF_NO_READONLY)) { | |
5c67e4af BP |
4384 | return OFPERR_OFPBRC_EPERM; |
4385 | } | |
4386 | ||
adcf00ba AZ |
4387 | if (!(fm->flags & OFPUTIL_FF_HIDDEN_FIELDS)) { |
4388 | if (!match_has_default_hidden_fields(&fm->match)) { | |
4389 | VLOG_WARN_RL(&rl, "%s: (add_flow) only internal flows can set " | |
4390 | "non-default values to hidden fields", ofproto->name); | |
4391 | return OFPERR_OFPBRC_EPERM; | |
4392 | } | |
4393 | } | |
4394 | ||
8037acb4 BP |
4395 | cls_rule_init(&cr, &fm->match, fm->priority); |
4396 | ||
b277c7cc | 4397 | /* Transform "add" into "modify" if there's an existing identical flow. */ |
8037acb4 | 4398 | rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls, &cr)); |
b277c7cc | 4399 | if (rule) { |
834fe5cb BP |
4400 | struct rule_collection rules; |
4401 | ||
8037acb4 | 4402 | cls_rule_destroy(&cr); |
b277c7cc | 4403 | |
834fe5cb BP |
4404 | rule_collection_init(&rules); |
4405 | rule_collection_add(&rules, rule); | |
4406 | fm->modify_cookie = true; | |
4407 | error = modify_flows__(ofproto, fm, &rules, req); | |
4408 | rule_collection_destroy(&rules); | |
a8e547c1 | 4409 | |
834fe5cb | 4410 | return error; |
b277c7cc BP |
4411 | } |
4412 | ||
81a76618 | 4413 | /* Check for overlap, if requested. */ |
0fb88c18 | 4414 | if (fm->flags & OFPUTIL_FF_CHECK_OVERLAP) { |
afae68b1 | 4415 | if (classifier_rule_overlaps(&table->cls, &cr)) { |
8037acb4 | 4416 | cls_rule_destroy(&cr); |
c09f755d BP |
4417 | return OFPERR_OFPFMFC_OVERLAP; |
4418 | } | |
7ee20df1 | 4419 | } |
81a76618 | 4420 | |
8037acb4 | 4421 | /* If necessary, evict an existing rule to clear out space. */ |
834fe5cb | 4422 | error = evict_rules_from_table(table, 1); |
8037acb4 BP |
4423 | if (error) { |
4424 | cls_rule_destroy(&cr); | |
4425 | return error; | |
4426 | } | |
2e1ae200 | 4427 | |
8037acb4 | 4428 | /* Allocate new rule. */ |
d6671377 JR |
4429 | error = ofproto_rule_create(ofproto, fm, &cr, table - ofproto->tables, |
4430 | &rule); | |
b277c7cc | 4431 | if (error) { |
8037acb4 | 4432 | return error; |
064af421 | 4433 | } |
8037acb4 | 4434 | |
bc5e6a91 | 4435 | ofproto_rule_insert__(ofproto, rule); |
1ebeaaa7 | 4436 | |
802f84ff | 4437 | classifier_defer(&table->cls); |
18080541 BP |
4438 | |
4439 | struct cls_conjunction *conjs; | |
4440 | size_t n_conjs; | |
4441 | get_conjunctions(fm, &conjs, &n_conjs); | |
4442 | classifier_insert(&table->cls, &rule->cr, conjs, n_conjs); | |
4443 | free(conjs); | |
8037acb4 | 4444 | |
b20f4073 | 4445 | error = ofproto->ofproto_class->rule_insert(rule); |
834fe5cb BP |
4446 | if (error) { |
4447 | oftable_remove_rule(rule); | |
4448 | ofproto_rule_unref(rule); | |
4449 | return error; | |
4450 | } | |
fc02ecc7 | 4451 | cls_rule_make_visible(&rule->cr); |
802f84ff JR |
4452 | classifier_publish(&table->cls); |
4453 | ||
d6671377 | 4454 | learned_cookies_inc(ofproto, rule_get_actions(rule)); |
062fea06 | 4455 | |
834fe5cb BP |
4456 | if (minimask_get_vid_mask(&rule->cr.match.mask) == VLAN_VID_MASK) { |
4457 | if (ofproto->vlan_bitmap) { | |
4458 | uint16_t vid = miniflow_get_vid(&rule->cr.match.flow); | |
4459 | if (!bitmap_is_set(ofproto->vlan_bitmap, vid)) { | |
4460 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
4461 | ofproto->vlans_changed = true; | |
4462 | } | |
4463 | } else { | |
4464 | ofproto->vlans_changed = true; | |
4465 | } | |
4466 | } | |
4467 | ||
4468 | ofmonitor_report(ofproto->connmgr, rule, NXFME_ADDED, 0, | |
cdbdeeda | 4469 | req ? req->ofconn : NULL, req ? req->xid : 0, NULL); |
834fe5cb BP |
4470 | |
4471 | return req ? send_buffered_packet(req->ofconn, fm->buffer_id, rule) : 0; | |
064af421 | 4472 | } |
79eee1eb BP |
4473 | \f |
4474 | /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */ | |
064af421 | 4475 | |
9ed18e46 BP |
4476 | /* Modifies the rules listed in 'rules', changing their actions to match those |
4477 | * in 'fm'. | |
79eee1eb | 4478 | * |
9ed18e46 BP |
4479 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, |
4480 | * if any. | |
4481 | * | |
4482 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 4483 | static enum ofperr |
baae3d02 BP |
4484 | modify_flows__(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4485 | const struct rule_collection *rules, | |
4486 | const struct flow_mod_requester *req) | |
15aaf599 | 4487 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4488 | { |
55951e15 | 4489 | struct ovs_list dead_cookies = OVS_LIST_INITIALIZER(&dead_cookies); |
834fe5cb | 4490 | enum nx_flow_update_event event; |
a8e547c1 | 4491 | size_t i; |
79eee1eb | 4492 | |
af822017 BP |
4493 | if (ofproto->ofproto_class->rule_premodify_actions) { |
4494 | for (i = 0; i < rules->n; i++) { | |
4495 | struct rule *rule = rules->rules[i]; | |
cb220b39 | 4496 | enum ofperr error; |
af822017 | 4497 | |
dd51dae2 BP |
4498 | error = ofproto->ofproto_class->rule_premodify_actions( |
4499 | rule, fm->ofpacts, fm->ofpacts_len); | |
4500 | if (error) { | |
4501 | return error; | |
af822017 BP |
4502 | } |
4503 | } | |
4504 | } | |
4505 | ||
834fe5cb | 4506 | event = fm->command == OFPFC_ADD ? NXFME_ADDED : NXFME_MODIFIED; |
a8e547c1 BP |
4507 | for (i = 0; i < rules->n; i++) { |
4508 | struct rule *rule = rules->rules[i]; | |
08043761 | 4509 | |
834fe5cb BP |
4510 | /* 'fm' says that */ |
4511 | bool change_cookie = (fm->modify_cookie | |
4512 | && fm->new_cookie != OVS_BE64_MAX | |
4513 | && fm->new_cookie != rule->flow_cookie); | |
2e1ae200 | 4514 | |
834fe5cb BP |
4515 | const struct rule_actions *actions = rule_get_actions(rule); |
4516 | bool change_actions = !ofpacts_equal(fm->ofpacts, fm->ofpacts_len, | |
4517 | actions->ofpacts, | |
4518 | actions->ofpacts_len); | |
5c67e4af | 4519 | |
834fe5cb | 4520 | bool reset_counters = (fm->flags & OFPUTIL_FF_RESET_COUNTS) != 0; |
a7d94793 | 4521 | |
834fe5cb BP |
4522 | long long int now = time_msec(); |
4523 | ||
834fe5cb BP |
4524 | if (change_cookie) { |
4525 | cookies_remove(ofproto, rule); | |
98eaac36 | 4526 | } |
834fe5cb BP |
4527 | |
4528 | ovs_mutex_lock(&rule->mutex); | |
4529 | if (fm->command == OFPFC_ADD) { | |
b277c7cc BP |
4530 | rule->idle_timeout = fm->idle_timeout; |
4531 | rule->hard_timeout = fm->hard_timeout; | |
ca26eb44 | 4532 | rule->importance = fm->importance; |
3f517bcd | 4533 | rule->flags = fm->flags & OFPUTIL_FF_STATE; |
834fe5cb BP |
4534 | rule->created = now; |
4535 | } | |
4536 | if (change_cookie) { | |
4537 | rule->flow_cookie = fm->new_cookie; | |
4538 | } | |
4539 | rule->modified = now; | |
4540 | ovs_mutex_unlock(&rule->mutex); | |
4541 | ||
4542 | if (change_cookie) { | |
4543 | cookies_insert(ofproto, rule); | |
4544 | } | |
4545 | if (fm->command == OFPFC_ADD) { | |
ca26eb44 | 4546 | if (fm->idle_timeout || fm->hard_timeout || fm->importance) { |
b277c7cc BP |
4547 | if (!rule->eviction_group) { |
4548 | eviction_group_add_rule(rule); | |
4549 | } | |
4550 | } else { | |
4551 | eviction_group_remove_rule(rule); | |
4552 | } | |
4553 | } | |
4554 | ||
834fe5cb | 4555 | if (change_actions) { |
18080541 BP |
4556 | /* We have to change the actions. The rule's conjunctive match set |
4557 | * is a function of its actions, so we need to update that too. The | |
4558 | * conjunctive match set is used in the lookup process to figure | |
4559 | * which (if any) collection of conjunctive sets the packet matches | |
4560 | * with. However, a rule with conjunction actions is never to be | |
4561 | * returned as a classifier lookup result. To make sure a rule with | |
4562 | * conjunction actions is not returned as a lookup result, we update | |
4563 | * them in a carefully chosen order: | |
4564 | * | |
4565 | * - If we're adding a conjunctive match set where there wasn't one | |
4566 | * before, we have to make the conjunctive match set available to | |
4567 | * lookups before the rule's actions are changed, as otherwise | |
4568 | * rule with a conjunction action could be returned as a lookup | |
4569 | * result. | |
4570 | * | |
4571 | * - To clear some nonempty conjunctive set, we set the rule's | |
4572 | * actions first, so that a lookup can't return a rule with | |
4573 | * conjunction actions. | |
4574 | * | |
4575 | * - Otherwise, order doesn't matter for changing one nonempty | |
4576 | * conjunctive match set to some other nonempty set, since the | |
4577 | * rule's actions are not seen by the classifier, and hence don't | |
4578 | * matter either before or after the change. */ | |
4579 | struct cls_conjunction *conjs; | |
4580 | size_t n_conjs; | |
4581 | get_conjunctions(fm, &conjs, &n_conjs); | |
4582 | ||
4583 | if (n_conjs) { | |
4584 | set_conjunctions(rule, conjs, n_conjs); | |
4585 | } | |
4c7562c5 | 4586 | ovsrcu_set(&rule->actions, rule_actions_create(fm->ofpacts, |
834fe5cb | 4587 | fm->ofpacts_len)); |
18080541 BP |
4588 | if (!conjs) { |
4589 | set_conjunctions(rule, conjs, n_conjs); | |
4590 | } | |
4591 | ||
4592 | free(conjs); | |
834fe5cb | 4593 | } |
884e1dc4 | 4594 | |
834fe5cb | 4595 | if (change_actions || reset_counters) { |
af822017 | 4596 | ofproto->ofproto_class->rule_modify_actions(rule, reset_counters); |
623e1caf | 4597 | } |
834fe5cb BP |
4598 | |
4599 | if (event != NXFME_MODIFIED || change_actions || change_cookie) { | |
4600 | ofmonitor_report(ofproto->connmgr, rule, event, 0, | |
cdbdeeda SH |
4601 | req ? req->ofconn : NULL, req ? req->xid : 0, |
4602 | change_actions ? actions : NULL); | |
834fe5cb | 4603 | } |
35f48b8b BP |
4604 | |
4605 | if (change_actions) { | |
4606 | learned_cookies_inc(ofproto, rule_get_actions(rule)); | |
4607 | learned_cookies_dec(ofproto, actions, &dead_cookies); | |
cdbdeeda | 4608 | rule_actions_destroy(actions); |
35f48b8b | 4609 | } |
834fe5cb | 4610 | } |
35f48b8b | 4611 | learned_cookies_flush(ofproto, &dead_cookies); |
834fe5cb BP |
4612 | |
4613 | if (fm->buffer_id != UINT32_MAX && req) { | |
cb220b39 SH |
4614 | return send_buffered_packet(req->ofconn, fm->buffer_id, |
4615 | rules->rules[0]); | |
5ecc9d81 | 4616 | } |
79eee1eb | 4617 | |
cb220b39 | 4618 | return 0; |
9ed18e46 BP |
4619 | } |
4620 | ||
9387b970 | 4621 | static enum ofperr |
baae3d02 BP |
4622 | modify_flows_add(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4623 | const struct flow_mod_requester *req) | |
15aaf599 | 4624 | OVS_REQUIRES(ofproto_mutex) |
9387b970 | 4625 | { |
b8266395 | 4626 | if (fm->cookie_mask != htonll(0) || fm->new_cookie == OVS_BE64_MAX) { |
9387b970 SH |
4627 | return 0; |
4628 | } | |
baae3d02 | 4629 | return add_flow(ofproto, fm, req); |
9387b970 SH |
4630 | } |
4631 | ||
90bf1e07 BP |
4632 | /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on |
4633 | * failure. | |
9ed18e46 BP |
4634 | * |
4635 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, | |
4636 | * if any. */ | |
90bf1e07 | 4637 | static enum ofperr |
baae3d02 BP |
4638 | modify_flows_loose(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4639 | const struct flow_mod_requester *req) | |
15aaf599 | 4640 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 4641 | { |
a9b22b7f | 4642 | struct rule_criteria criteria; |
a8e547c1 | 4643 | struct rule_collection rules; |
9ed18e46 BP |
4644 | int error; |
4645 | ||
a9b22b7f BP |
4646 | rule_criteria_init(&criteria, fm->table_id, &fm->match, 0, |
4647 | fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG11_ANY); | |
dd51dae2 BP |
4648 | rule_criteria_require_rw(&criteria, |
4649 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
a9b22b7f BP |
4650 | error = collect_rules_loose(ofproto, &criteria, &rules); |
4651 | rule_criteria_destroy(&criteria); | |
4652 | ||
a8e547c1 BP |
4653 | if (!error) { |
4654 | error = (rules.n > 0 | |
baae3d02 BP |
4655 | ? modify_flows__(ofproto, fm, &rules, req) |
4656 | : modify_flows_add(ofproto, fm, req)); | |
623e1caf | 4657 | } |
a8e547c1 BP |
4658 | |
4659 | rule_collection_destroy(&rules); | |
4660 | ||
4661 | return error; | |
79eee1eb BP |
4662 | } |
4663 | ||
4664 | /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error | |
baae3d02 | 4665 | * code on failure. */ |
90bf1e07 | 4666 | static enum ofperr |
baae3d02 BP |
4667 | modify_flow_strict(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4668 | const struct flow_mod_requester *req) | |
15aaf599 | 4669 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4670 | { |
a9b22b7f | 4671 | struct rule_criteria criteria; |
a8e547c1 | 4672 | struct rule_collection rules; |
6c1491fb BP |
4673 | int error; |
4674 | ||
a9b22b7f BP |
4675 | rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority, |
4676 | fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG11_ANY); | |
dd51dae2 BP |
4677 | rule_criteria_require_rw(&criteria, |
4678 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
a9b22b7f BP |
4679 | error = collect_rules_strict(ofproto, &criteria, &rules); |
4680 | rule_criteria_destroy(&criteria); | |
4681 | ||
a8e547c1 BP |
4682 | if (!error) { |
4683 | if (rules.n == 0) { | |
baae3d02 | 4684 | error = modify_flows_add(ofproto, fm, req); |
a8e547c1 | 4685 | } else if (rules.n == 1) { |
baae3d02 | 4686 | error = modify_flows__(ofproto, fm, &rules, req); |
a8e547c1 | 4687 | } |
623e1caf | 4688 | } |
a8e547c1 BP |
4689 | |
4690 | rule_collection_destroy(&rules); | |
4691 | ||
4692 | return error; | |
79eee1eb | 4693 | } |
9ed18e46 BP |
4694 | \f |
4695 | /* OFPFC_DELETE implementation. */ | |
79eee1eb | 4696 | |
9ca4a86f | 4697 | /* Deletes the rules listed in 'rules'. */ |
254750ce | 4698 | static void |
9ca4a86f | 4699 | delete_flows__(const struct rule_collection *rules, |
baae3d02 BP |
4700 | enum ofp_flow_removed_reason reason, |
4701 | const struct flow_mod_requester *req) | |
15aaf599 | 4702 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 4703 | { |
9ca4a86f | 4704 | if (rules->n) { |
55951e15 | 4705 | struct ovs_list dead_cookies = OVS_LIST_INITIALIZER(&dead_cookies); |
9ca4a86f | 4706 | struct ofproto *ofproto = rules->rules[0]->ofproto; |
802f84ff | 4707 | struct rule *rule, *next; |
9ca4a86f | 4708 | size_t i; |
79eee1eb | 4709 | |
802f84ff JR |
4710 | for (i = 0, next = rules->rules[0]; |
4711 | rule = next, next = (++i < rules->n) ? rules->rules[i] : NULL, | |
4712 | rule; ) { | |
4713 | struct classifier *cls = &ofproto->tables[rule->table_id].cls; | |
4714 | uint8_t next_table = next ? next->table_id : UINT8_MAX; | |
79eee1eb | 4715 | |
9ca4a86f BP |
4716 | ofproto_rule_send_removed(rule, reason); |
4717 | ||
4718 | ofmonitor_report(ofproto->connmgr, rule, NXFME_DELETED, reason, | |
cdbdeeda SH |
4719 | req ? req->ofconn : NULL, req ? req->xid : 0, |
4720 | NULL); | |
802f84ff JR |
4721 | |
4722 | if (next_table == rule->table_id) { | |
4723 | classifier_defer(cls); | |
4724 | } | |
4725 | classifier_remove(cls, &rule->cr); | |
4726 | if (next_table != rule->table_id) { | |
4727 | classifier_publish(cls); | |
4728 | } | |
4729 | ofproto_rule_remove__(ofproto, rule); | |
4730 | ||
9ca4a86f | 4731 | ofproto->ofproto_class->rule_delete(rule); |
35f48b8b | 4732 | |
802f84ff JR |
4733 | learned_cookies_dec(ofproto, rule_get_actions(rule), |
4734 | &dead_cookies); | |
401aa90e JR |
4735 | |
4736 | ofproto_rule_unref(rule); | |
9ca4a86f | 4737 | } |
35f48b8b | 4738 | learned_cookies_flush(ofproto, &dead_cookies); |
9ca4a86f BP |
4739 | ofmonitor_flush(ofproto->connmgr); |
4740 | } | |
79eee1eb | 4741 | } |
79eee1eb BP |
4742 | |
4743 | /* Implements OFPFC_DELETE. */ | |
90bf1e07 | 4744 | static enum ofperr |
baae3d02 | 4745 | delete_flows_loose(struct ofproto *ofproto, |
7024dffe | 4746 | const struct ofputil_flow_mod *fm, |
baae3d02 | 4747 | const struct flow_mod_requester *req) |
15aaf599 | 4748 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4749 | { |
a9b22b7f | 4750 | struct rule_criteria criteria; |
a8e547c1 | 4751 | struct rule_collection rules; |
90bf1e07 | 4752 | enum ofperr error; |
064af421 | 4753 | |
a9b22b7f BP |
4754 | rule_criteria_init(&criteria, fm->table_id, &fm->match, 0, |
4755 | fm->cookie, fm->cookie_mask, | |
4756 | fm->out_port, fm->out_group); | |
dd51dae2 BP |
4757 | rule_criteria_require_rw(&criteria, |
4758 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
a9b22b7f BP |
4759 | error = collect_rules_loose(ofproto, &criteria, &rules); |
4760 | rule_criteria_destroy(&criteria); | |
4761 | ||
802f84ff | 4762 | if (!error) { |
9ca4a86f | 4763 | delete_flows__(&rules, fm->delete_reason, req); |
a8e547c1 BP |
4764 | } |
4765 | rule_collection_destroy(&rules); | |
4766 | ||
4767 | return error; | |
064af421 BP |
4768 | } |
4769 | ||
79eee1eb | 4770 | /* Implements OFPFC_DELETE_STRICT. */ |
90bf1e07 | 4771 | static enum ofperr |
baae3d02 BP |
4772 | delete_flow_strict(struct ofproto *ofproto, const struct ofputil_flow_mod *fm, |
4773 | const struct flow_mod_requester *req) | |
15aaf599 | 4774 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4775 | { |
a9b22b7f | 4776 | struct rule_criteria criteria; |
a8e547c1 | 4777 | struct rule_collection rules; |
90bf1e07 | 4778 | enum ofperr error; |
79eee1eb | 4779 | |
a9b22b7f BP |
4780 | rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority, |
4781 | fm->cookie, fm->cookie_mask, | |
4782 | fm->out_port, fm->out_group); | |
dd51dae2 BP |
4783 | rule_criteria_require_rw(&criteria, |
4784 | (fm->flags & OFPUTIL_FF_NO_READONLY) != 0); | |
a9b22b7f BP |
4785 | error = collect_rules_strict(ofproto, &criteria, &rules); |
4786 | rule_criteria_destroy(&criteria); | |
4787 | ||
802f84ff | 4788 | if (!error) { |
9ca4a86f | 4789 | delete_flows__(&rules, fm->delete_reason, req); |
a8e547c1 BP |
4790 | } |
4791 | rule_collection_destroy(&rules); | |
4792 | ||
4793 | return error; | |
abe529af BP |
4794 | } |
4795 | ||
4796 | static void | |
4797 | ofproto_rule_send_removed(struct rule *rule, uint8_t reason) | |
15aaf599 | 4798 | OVS_REQUIRES(ofproto_mutex) |
abe529af BP |
4799 | { |
4800 | struct ofputil_flow_removed fr; | |
dc437090 | 4801 | long long int used; |
abe529af | 4802 | |
834fe5cb BP |
4803 | if (rule_is_hidden(rule) || |
4804 | !(rule->flags & OFPUTIL_FF_SEND_FLOW_REM)) { | |
abe529af BP |
4805 | return; |
4806 | } | |
4807 | ||
5cb7a798 | 4808 | minimatch_expand(&rule->cr.match, &fr.match); |
81a76618 | 4809 | fr.priority = rule->cr.priority; |
abe529af BP |
4810 | fr.cookie = rule->flow_cookie; |
4811 | fr.reason = reason; | |
95216219 | 4812 | fr.table_id = rule->table_id; |
65e0be10 BP |
4813 | calc_duration(rule->created, time_msec(), |
4814 | &fr.duration_sec, &fr.duration_nsec); | |
d10976b7 | 4815 | ovs_mutex_lock(&rule->mutex); |
abe529af | 4816 | fr.idle_timeout = rule->idle_timeout; |
fa2bad0f | 4817 | fr.hard_timeout = rule->hard_timeout; |
d10976b7 | 4818 | ovs_mutex_unlock(&rule->mutex); |
abe529af | 4819 | rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count, |
dc437090 | 4820 | &fr.byte_count, &used); |
abe529af BP |
4821 | |
4822 | connmgr_send_flow_removed(rule->ofproto->connmgr, &fr); | |
4823 | } | |
4824 | ||
4825 | /* Sends an OpenFlow "flow removed" message with the given 'reason' (either | |
4826 | * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its | |
4827 | * ofproto. | |
4828 | * | |
4829 | * ofproto implementation ->run() functions should use this function to expire | |
4830 | * OpenFlow flows. */ | |
4831 | void | |
4832 | ofproto_rule_expire(struct rule *rule, uint8_t reason) | |
15aaf599 | 4833 | OVS_REQUIRES(ofproto_mutex) |
abe529af | 4834 | { |
802f84ff JR |
4835 | struct rule_collection rules; |
4836 | ||
4837 | rules.rules = rules.stub; | |
4838 | rules.n = 1; | |
4839 | rules.stub[0] = rule; | |
4840 | delete_flows__(&rules, reason, NULL); | |
79eee1eb | 4841 | } |
994c9973 BP |
4842 | |
4843 | /* Reduces '*timeout' to no more than 'max'. A value of zero in either case | |
4844 | * means "infinite". */ | |
4845 | static void | |
4846 | reduce_timeout(uint16_t max, uint16_t *timeout) | |
4847 | { | |
4848 | if (max && (!*timeout || *timeout > max)) { | |
4849 | *timeout = max; | |
4850 | } | |
4851 | } | |
4852 | ||
4853 | /* If 'idle_timeout' is nonzero, and 'rule' has no idle timeout or an idle | |
4854 | * timeout greater than 'idle_timeout', lowers 'rule''s idle timeout to | |
4855 | * 'idle_timeout' seconds. Similarly for 'hard_timeout'. | |
4856 | * | |
4857 | * Suitable for implementing OFPACT_FIN_TIMEOUT. */ | |
4858 | void | |
4859 | ofproto_rule_reduce_timeouts(struct rule *rule, | |
4860 | uint16_t idle_timeout, uint16_t hard_timeout) | |
d10976b7 | 4861 | OVS_EXCLUDED(ofproto_mutex, rule->mutex) |
994c9973 BP |
4862 | { |
4863 | if (!idle_timeout && !hard_timeout) { | |
4864 | return; | |
4865 | } | |
4866 | ||
abe7b10f | 4867 | ovs_mutex_lock(&ofproto_mutex); |
994c9973 BP |
4868 | if (list_is_empty(&rule->expirable)) { |
4869 | list_insert(&rule->ofproto->expirable, &rule->expirable); | |
4870 | } | |
abe7b10f | 4871 | ovs_mutex_unlock(&ofproto_mutex); |
994c9973 | 4872 | |
d10976b7 | 4873 | ovs_mutex_lock(&rule->mutex); |
994c9973 BP |
4874 | reduce_timeout(idle_timeout, &rule->idle_timeout); |
4875 | reduce_timeout(hard_timeout, &rule->hard_timeout); | |
d10976b7 | 4876 | ovs_mutex_unlock(&rule->mutex); |
994c9973 | 4877 | } |
79eee1eb | 4878 | \f |
90bf1e07 | 4879 | static enum ofperr |
2e4f5fcf | 4880 | handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
15aaf599 | 4881 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 4882 | { |
a5b8d268 | 4883 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
a9a2da38 | 4884 | struct ofputil_flow_mod fm; |
f25d0cf3 BP |
4885 | uint64_t ofpacts_stub[1024 / 8]; |
4886 | struct ofpbuf ofpacts; | |
90bf1e07 | 4887 | enum ofperr error; |
064af421 | 4888 | |
76589937 | 4889 | error = reject_slave_controller(ofconn); |
9deba63b | 4890 | if (error) { |
f25d0cf3 | 4891 | goto exit; |
9deba63b | 4892 | } |
3052b0c5 | 4893 | |
f25d0cf3 BP |
4894 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
4895 | error = ofputil_decode_flow_mod(&fm, oh, ofconn_get_protocol(ofconn), | |
7e9f8266 BP |
4896 | &ofpacts, |
4897 | u16_to_ofp(ofproto->max_ports), | |
4898 | ofproto->n_tables); | |
4899 | if (!error) { | |
4900 | error = ofproto_check_ofpacts(ofproto, fm.ofpacts, fm.ofpacts_len); | |
4901 | } | |
548de4dd | 4902 | if (!error) { |
baae3d02 BP |
4903 | struct flow_mod_requester req; |
4904 | ||
4905 | req.ofconn = ofconn; | |
834fe5cb | 4906 | req.xid = oh->xid; |
baae3d02 | 4907 | error = handle_flow_mod__(ofproto, &fm, &req); |
49bdc010 | 4908 | } |
a5b8d268 | 4909 | if (error) { |
f25d0cf3 | 4910 | goto exit_free_ofpacts; |
a5b8d268 | 4911 | } |
2e310801 | 4912 | |
696d1bcf | 4913 | ofconn_report_flow_mod(ofconn, fm.command); |
a5b8d268 | 4914 | |
f25d0cf3 BP |
4915 | exit_free_ofpacts: |
4916 | ofpbuf_uninit(&ofpacts); | |
4917 | exit: | |
4918 | return error; | |
75a75043 BP |
4919 | } |
4920 | ||
90bf1e07 | 4921 | static enum ofperr |
baae3d02 BP |
4922 | handle_flow_mod__(struct ofproto *ofproto, struct ofputil_flow_mod *fm, |
4923 | const struct flow_mod_requester *req) | |
15aaf599 | 4924 | OVS_EXCLUDED(ofproto_mutex) |
75a75043 | 4925 | { |
35412852 | 4926 | enum ofperr error; |
75a75043 | 4927 | |
15aaf599 | 4928 | ovs_mutex_lock(&ofproto_mutex); |
baae3d02 BP |
4929 | switch (fm->command) { |
4930 | case OFPFC_ADD: | |
4931 | error = add_flow(ofproto, fm, req); | |
4932 | break; | |
3052b0c5 | 4933 | |
baae3d02 BP |
4934 | case OFPFC_MODIFY: |
4935 | error = modify_flows_loose(ofproto, fm, req); | |
4936 | break; | |
3052b0c5 | 4937 | |
baae3d02 BP |
4938 | case OFPFC_MODIFY_STRICT: |
4939 | error = modify_flow_strict(ofproto, fm, req); | |
4940 | break; | |
3052b0c5 | 4941 | |
baae3d02 BP |
4942 | case OFPFC_DELETE: |
4943 | error = delete_flows_loose(ofproto, fm, req); | |
4944 | break; | |
3052b0c5 | 4945 | |
baae3d02 BP |
4946 | case OFPFC_DELETE_STRICT: |
4947 | error = delete_flow_strict(ofproto, fm, req); | |
4948 | break; | |
3052b0c5 | 4949 | |
baae3d02 BP |
4950 | default: |
4951 | if (fm->command > 0xff) { | |
4952 | VLOG_WARN_RL(&rl, "%s: flow_mod has explicit table_id but " | |
4953 | "flow_mod_table_id extension is not enabled", | |
4954 | ofproto->name); | |
6c1491fb | 4955 | } |
baae3d02 BP |
4956 | error = OFPERR_OFPFMFC_BAD_COMMAND; |
4957 | break; | |
3052b0c5 | 4958 | } |
baae3d02 | 4959 | ofmonitor_flush(ofproto->connmgr); |
15aaf599 | 4960 | ovs_mutex_unlock(&ofproto_mutex); |
35412852 BP |
4961 | |
4962 | run_rule_executes(ofproto); | |
4963 | return error; | |
3052b0c5 BP |
4964 | } |
4965 | ||
90bf1e07 | 4966 | static enum ofperr |
d1e2cf21 | 4967 | handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh) |
9deba63b | 4968 | { |
f4f1ea7e BP |
4969 | struct ofputil_role_request request; |
4970 | struct ofputil_role_request reply; | |
9deba63b | 4971 | struct ofpbuf *buf; |
6ea4776b JR |
4972 | enum ofperr error; |
4973 | ||
f4f1ea7e | 4974 | error = ofputil_decode_role_message(oh, &request); |
6ea4776b JR |
4975 | if (error) { |
4976 | return error; | |
4977 | } | |
9deba63b | 4978 | |
f4f1ea7e | 4979 | if (request.role != OFPCR12_ROLE_NOCHANGE) { |
f4f1ea7e BP |
4980 | if (request.have_generation_id |
4981 | && !ofconn_set_master_election_id(ofconn, request.generation_id)) { | |
4982 | return OFPERR_OFPRRFC_STALE; | |
6ea4776b | 4983 | } |
6ea4776b | 4984 | |
f4f1ea7e BP |
4985 | ofconn_set_role(ofconn, request.role); |
4986 | } | |
9deba63b | 4987 | |
f4f1ea7e | 4988 | reply.role = ofconn_get_role(ofconn); |
147cc9d3 BP |
4989 | reply.have_generation_id = ofconn_get_master_election_id( |
4990 | ofconn, &reply.generation_id); | |
f4f1ea7e | 4991 | buf = ofputil_encode_role_reply(oh, &reply); |
b0421aa2 | 4992 | ofconn_send_reply(ofconn, buf); |
9deba63b BP |
4993 | |
4994 | return 0; | |
4995 | } | |
4996 | ||
90bf1e07 | 4997 | static enum ofperr |
6c1491fb BP |
4998 | handle_nxt_flow_mod_table_id(struct ofconn *ofconn, |
4999 | const struct ofp_header *oh) | |
5000 | { | |
982697a4 | 5001 | const struct nx_flow_mod_table_id *msg = ofpmsg_body(oh); |
27527aa0 BP |
5002 | enum ofputil_protocol cur, next; |
5003 | ||
5004 | cur = ofconn_get_protocol(ofconn); | |
5005 | next = ofputil_protocol_set_tid(cur, msg->set != 0); | |
5006 | ofconn_set_protocol(ofconn, next); | |
6c1491fb | 5007 | |
6c1491fb BP |
5008 | return 0; |
5009 | } | |
5010 | ||
90bf1e07 | 5011 | static enum ofperr |
d1e2cf21 | 5012 | handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh) |
09246b99 | 5013 | { |
982697a4 | 5014 | const struct nx_set_flow_format *msg = ofpmsg_body(oh); |
27527aa0 BP |
5015 | enum ofputil_protocol cur, next; |
5016 | enum ofputil_protocol next_base; | |
09246b99 | 5017 | |
27527aa0 BP |
5018 | next_base = ofputil_nx_flow_format_to_protocol(ntohl(msg->format)); |
5019 | if (!next_base) { | |
90bf1e07 | 5020 | return OFPERR_OFPBRC_EPERM; |
09246b99 | 5021 | } |
7ee20df1 | 5022 | |
27527aa0 BP |
5023 | cur = ofconn_get_protocol(ofconn); |
5024 | next = ofputil_protocol_set_base(cur, next_base); | |
27527aa0 | 5025 | ofconn_set_protocol(ofconn, next); |
b20f4073 | 5026 | |
7ee20df1 | 5027 | return 0; |
09246b99 BP |
5028 | } |
5029 | ||
90bf1e07 | 5030 | static enum ofperr |
54834960 EJ |
5031 | handle_nxt_set_packet_in_format(struct ofconn *ofconn, |
5032 | const struct ofp_header *oh) | |
5033 | { | |
982697a4 | 5034 | const struct nx_set_packet_in_format *msg = ofpmsg_body(oh); |
54834960 EJ |
5035 | uint32_t format; |
5036 | ||
54834960 | 5037 | format = ntohl(msg->format); |
a15f0eeb | 5038 | if (format != NXPIF_OPENFLOW10 && format != NXPIF_NXM) { |
90bf1e07 | 5039 | return OFPERR_OFPBRC_EPERM; |
54834960 EJ |
5040 | } |
5041 | ||
54834960 EJ |
5042 | ofconn_set_packet_in_format(ofconn, format); |
5043 | return 0; | |
5044 | } | |
5045 | ||
80d5aefd BP |
5046 | static enum ofperr |
5047 | handle_nxt_set_async_config(struct ofconn *ofconn, const struct ofp_header *oh) | |
5048 | { | |
982697a4 | 5049 | const struct nx_async_config *msg = ofpmsg_body(oh); |
80d5aefd BP |
5050 | uint32_t master[OAM_N_TYPES]; |
5051 | uint32_t slave[OAM_N_TYPES]; | |
5052 | ||
5053 | master[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[0]); | |
5054 | master[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[0]); | |
5055 | master[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[0]); | |
5056 | ||
5057 | slave[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[1]); | |
5058 | slave[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[1]); | |
5059 | slave[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[1]); | |
5060 | ||
5061 | ofconn_set_async_config(ofconn, master, slave); | |
4550b647 MM |
5062 | if (ofconn_get_type(ofconn) == OFCONN_SERVICE && |
5063 | !ofconn_get_miss_send_len(ofconn)) { | |
5064 | ofconn_set_miss_send_len(ofconn, OFP_DEFAULT_MISS_SEND_LEN); | |
5065 | } | |
80d5aefd BP |
5066 | |
5067 | return 0; | |
5068 | } | |
5069 | ||
c423b3b3 AC |
5070 | static enum ofperr |
5071 | handle_nxt_get_async_request(struct ofconn *ofconn, const struct ofp_header *oh) | |
5072 | { | |
5073 | struct ofpbuf *buf; | |
5074 | uint32_t master[OAM_N_TYPES]; | |
5075 | uint32_t slave[OAM_N_TYPES]; | |
5076 | struct nx_async_config *msg; | |
5077 | ||
5078 | ofconn_get_async_config(ofconn, master, slave); | |
5079 | buf = ofpraw_alloc_reply(OFPRAW_OFPT13_GET_ASYNC_REPLY, oh, 0); | |
5080 | msg = ofpbuf_put_zeros(buf, sizeof *msg); | |
5081 | ||
5082 | msg->packet_in_mask[0] = htonl(master[OAM_PACKET_IN]); | |
5083 | msg->port_status_mask[0] = htonl(master[OAM_PORT_STATUS]); | |
5084 | msg->flow_removed_mask[0] = htonl(master[OAM_FLOW_REMOVED]); | |
5085 | ||
5086 | msg->packet_in_mask[1] = htonl(slave[OAM_PACKET_IN]); | |
5087 | msg->port_status_mask[1] = htonl(slave[OAM_PORT_STATUS]); | |
5088 | msg->flow_removed_mask[1] = htonl(slave[OAM_FLOW_REMOVED]); | |
5089 | ||
5090 | ofconn_send_reply(ofconn, buf); | |
5091 | ||
5092 | return 0; | |
5093 | } | |
5094 | ||
a7349929 BP |
5095 | static enum ofperr |
5096 | handle_nxt_set_controller_id(struct ofconn *ofconn, | |
5097 | const struct ofp_header *oh) | |
5098 | { | |
982697a4 | 5099 | const struct nx_controller_id *nci = ofpmsg_body(oh); |
a7349929 | 5100 | |
a7349929 BP |
5101 | if (!is_all_zeros(nci->zero, sizeof nci->zero)) { |
5102 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
5103 | } | |
5104 | ||
5105 | ofconn_set_controller_id(ofconn, ntohs(nci->controller_id)); | |
5106 | return 0; | |
5107 | } | |
5108 | ||
90bf1e07 | 5109 | static enum ofperr |
d1e2cf21 | 5110 | handle_barrier_request(struct ofconn *ofconn, const struct ofp_header *oh) |
246e61ea | 5111 | { |
246e61ea JP |
5112 | struct ofpbuf *buf; |
5113 | ||
982697a4 BP |
5114 | buf = ofpraw_alloc_reply((oh->version == OFP10_VERSION |
5115 | ? OFPRAW_OFPT10_BARRIER_REPLY | |
5116 | : OFPRAW_OFPT11_BARRIER_REPLY), oh, 0); | |
b0421aa2 | 5117 | ofconn_send_reply(ofconn, buf); |
246e61ea JP |
5118 | return 0; |
5119 | } | |
5120 | ||
2b07c8b1 BP |
5121 | static void |
5122 | ofproto_compose_flow_refresh_update(const struct rule *rule, | |
5123 | enum nx_flow_monitor_flags flags, | |
ca6ba700 | 5124 | struct ovs_list *msgs) |
15aaf599 | 5125 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 | 5126 | { |
6f00e29b | 5127 | const struct rule_actions *actions; |
2b07c8b1 | 5128 | struct ofputil_flow_update fu; |
5cb7a798 | 5129 | struct match match; |
2b07c8b1 | 5130 | |
2b07c8b1 BP |
5131 | fu.event = (flags & (NXFMF_INITIAL | NXFMF_ADD) |
5132 | ? NXFME_ADDED : NXFME_MODIFIED); | |
5133 | fu.reason = 0; | |
d10976b7 | 5134 | ovs_mutex_lock(&rule->mutex); |
2b07c8b1 BP |
5135 | fu.idle_timeout = rule->idle_timeout; |
5136 | fu.hard_timeout = rule->hard_timeout; | |
d10976b7 | 5137 | ovs_mutex_unlock(&rule->mutex); |
2b07c8b1 BP |
5138 | fu.table_id = rule->table_id; |
5139 | fu.cookie = rule->flow_cookie; | |
5cb7a798 BP |
5140 | minimatch_expand(&rule->cr.match, &match); |
5141 | fu.match = &match; | |
6b140a4e | 5142 | fu.priority = rule->cr.priority; |
6f00e29b | 5143 | |
b20f4073 | 5144 | actions = flags & NXFMF_ACTIONS ? rule_get_actions(rule) : NULL; |
6f00e29b BP |
5145 | fu.ofpacts = actions ? actions->ofpacts : NULL; |
5146 | fu.ofpacts_len = actions ? actions->ofpacts_len : 0; | |
2b07c8b1 BP |
5147 | |
5148 | if (list_is_empty(msgs)) { | |
5149 | ofputil_start_flow_update(msgs); | |
5150 | } | |
5151 | ofputil_append_flow_update(&fu, msgs); | |
5152 | } | |
5153 | ||
5154 | void | |
a8e547c1 | 5155 | ofmonitor_compose_refresh_updates(struct rule_collection *rules, |
ca6ba700 | 5156 | struct ovs_list *msgs) |
15aaf599 | 5157 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 | 5158 | { |
a8e547c1 | 5159 | size_t i; |
2b07c8b1 | 5160 | |
a8e547c1 BP |
5161 | for (i = 0; i < rules->n; i++) { |
5162 | struct rule *rule = rules->rules[i]; | |
2b07c8b1 BP |
5163 | enum nx_flow_monitor_flags flags = rule->monitor_flags; |
5164 | rule->monitor_flags = 0; | |
5165 | ||
5166 | ofproto_compose_flow_refresh_update(rule, flags, msgs); | |
5167 | } | |
5168 | } | |
5169 | ||
5170 | static void | |
5171 | ofproto_collect_ofmonitor_refresh_rule(const struct ofmonitor *m, | |
5172 | struct rule *rule, uint64_t seqno, | |
a8e547c1 | 5173 | struct rule_collection *rules) |
15aaf599 | 5174 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
5175 | { |
5176 | enum nx_flow_monitor_flags update; | |
5177 | ||
5e8b38b0 | 5178 | if (rule_is_hidden(rule)) { |
2b07c8b1 BP |
5179 | return; |
5180 | } | |
5181 | ||
b20f4073 | 5182 | if (!ofproto_rule_has_out_port(rule, m->out_port)) { |
2b07c8b1 BP |
5183 | return; |
5184 | } | |
5185 | ||
5186 | if (seqno) { | |
5187 | if (rule->add_seqno > seqno) { | |
5188 | update = NXFMF_ADD | NXFMF_MODIFY; | |
5189 | } else if (rule->modify_seqno > seqno) { | |
5190 | update = NXFMF_MODIFY; | |
5191 | } else { | |
5192 | return; | |
5193 | } | |
5194 | ||
5195 | if (!(m->flags & update)) { | |
5196 | return; | |
5197 | } | |
5198 | } else { | |
5199 | update = NXFMF_INITIAL; | |
5200 | } | |
5201 | ||
5202 | if (!rule->monitor_flags) { | |
a8e547c1 | 5203 | rule_collection_add(rules, rule); |
2b07c8b1 BP |
5204 | } |
5205 | rule->monitor_flags |= update | (m->flags & NXFMF_ACTIONS); | |
5206 | } | |
5207 | ||
5208 | static void | |
5209 | ofproto_collect_ofmonitor_refresh_rules(const struct ofmonitor *m, | |
5210 | uint64_t seqno, | |
a8e547c1 | 5211 | struct rule_collection *rules) |
15aaf599 | 5212 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
5213 | { |
5214 | const struct ofproto *ofproto = ofconn_get_ofproto(m->ofconn); | |
2b07c8b1 | 5215 | const struct oftable *table; |
81a76618 | 5216 | struct cls_rule target; |
2b07c8b1 | 5217 | |
5cb7a798 | 5218 | cls_rule_init_from_minimatch(&target, &m->match, 0); |
2b07c8b1 | 5219 | FOR_EACH_MATCHING_TABLE (table, m->table_id, ofproto) { |
2b07c8b1 BP |
5220 | struct rule *rule; |
5221 | ||
5f0476ce | 5222 | CLS_FOR_EACH_TARGET (rule, cr, &table->cls, &target) { |
2b07c8b1 BP |
5223 | ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules); |
5224 | } | |
5225 | } | |
48d28ac1 | 5226 | cls_rule_destroy(&target); |
2b07c8b1 BP |
5227 | } |
5228 | ||
5229 | static void | |
5230 | ofproto_collect_ofmonitor_initial_rules(struct ofmonitor *m, | |
a8e547c1 | 5231 | struct rule_collection *rules) |
15aaf599 | 5232 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
5233 | { |
5234 | if (m->flags & NXFMF_INITIAL) { | |
5235 | ofproto_collect_ofmonitor_refresh_rules(m, 0, rules); | |
5236 | } | |
5237 | } | |
5238 | ||
5239 | void | |
5240 | ofmonitor_collect_resume_rules(struct ofmonitor *m, | |
a8e547c1 | 5241 | uint64_t seqno, struct rule_collection *rules) |
15aaf599 | 5242 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
5243 | { |
5244 | ofproto_collect_ofmonitor_refresh_rules(m, seqno, rules); | |
5245 | } | |
5246 | ||
7b900689 SH |
5247 | static enum ofperr |
5248 | flow_monitor_delete(struct ofconn *ofconn, uint32_t id) | |
5249 | OVS_REQUIRES(ofproto_mutex) | |
5250 | { | |
5251 | struct ofmonitor *m; | |
5252 | enum ofperr error; | |
5253 | ||
5254 | m = ofmonitor_lookup(ofconn, id); | |
5255 | if (m) { | |
5256 | ofmonitor_destroy(m); | |
5257 | error = 0; | |
5258 | } else { | |
5259 | error = OFPERR_OFPMOFC_UNKNOWN_MONITOR; | |
5260 | } | |
5261 | ||
5262 | return error; | |
5263 | } | |
5264 | ||
2b07c8b1 | 5265 | static enum ofperr |
982697a4 | 5266 | handle_flow_monitor_request(struct ofconn *ofconn, const struct ofp_header *oh) |
15aaf599 | 5267 | OVS_EXCLUDED(ofproto_mutex) |
2b07c8b1 BP |
5268 | { |
5269 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5270 | struct ofmonitor **monitors; | |
5271 | size_t n_monitors, allocated_monitors; | |
a8e547c1 | 5272 | struct rule_collection rules; |
ca6ba700 | 5273 | struct ovs_list replies; |
2b07c8b1 | 5274 | enum ofperr error; |
2b07c8b1 BP |
5275 | struct ofpbuf b; |
5276 | size_t i; | |
5277 | ||
982697a4 | 5278 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
2b07c8b1 BP |
5279 | monitors = NULL; |
5280 | n_monitors = allocated_monitors = 0; | |
15aaf599 BP |
5281 | |
5282 | ovs_mutex_lock(&ofproto_mutex); | |
2b07c8b1 BP |
5283 | for (;;) { |
5284 | struct ofputil_flow_monitor_request request; | |
5285 | struct ofmonitor *m; | |
5286 | int retval; | |
5287 | ||
5288 | retval = ofputil_decode_flow_monitor_request(&request, &b); | |
5289 | if (retval == EOF) { | |
5290 | break; | |
5291 | } else if (retval) { | |
5292 | error = retval; | |
5293 | goto error; | |
5294 | } | |
5295 | ||
5296 | if (request.table_id != 0xff | |
5297 | && request.table_id >= ofproto->n_tables) { | |
5298 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
5299 | goto error; | |
5300 | } | |
5301 | ||
5302 | error = ofmonitor_create(&request, ofconn, &m); | |
5303 | if (error) { | |
5304 | goto error; | |
5305 | } | |
5306 | ||
5307 | if (n_monitors >= allocated_monitors) { | |
5308 | monitors = x2nrealloc(monitors, &allocated_monitors, | |
5309 | sizeof *monitors); | |
5310 | } | |
5311 | monitors[n_monitors++] = m; | |
5312 | } | |
5313 | ||
a8e547c1 | 5314 | rule_collection_init(&rules); |
2b07c8b1 BP |
5315 | for (i = 0; i < n_monitors; i++) { |
5316 | ofproto_collect_ofmonitor_initial_rules(monitors[i], &rules); | |
5317 | } | |
5318 | ||
982697a4 | 5319 | ofpmp_init(&replies, oh); |
2b07c8b1 | 5320 | ofmonitor_compose_refresh_updates(&rules, &replies); |
15aaf599 BP |
5321 | ovs_mutex_unlock(&ofproto_mutex); |
5322 | ||
a8e547c1 BP |
5323 | rule_collection_destroy(&rules); |
5324 | ||
2b07c8b1 | 5325 | ofconn_send_replies(ofconn, &replies); |
2b07c8b1 BP |
5326 | free(monitors); |
5327 | ||
5328 | return 0; | |
5329 | ||
5330 | error: | |
5331 | for (i = 0; i < n_monitors; i++) { | |
5332 | ofmonitor_destroy(monitors[i]); | |
5333 | } | |
5334 | free(monitors); | |
4cd1bc9d BP |
5335 | ovs_mutex_unlock(&ofproto_mutex); |
5336 | ||
2b07c8b1 BP |
5337 | return error; |
5338 | } | |
5339 | ||
5340 | static enum ofperr | |
5341 | handle_flow_monitor_cancel(struct ofconn *ofconn, const struct ofp_header *oh) | |
15aaf599 | 5342 | OVS_EXCLUDED(ofproto_mutex) |
2b07c8b1 | 5343 | { |
15aaf599 | 5344 | enum ofperr error; |
2b07c8b1 BP |
5345 | uint32_t id; |
5346 | ||
5347 | id = ofputil_decode_flow_monitor_cancel(oh); | |
15aaf599 BP |
5348 | |
5349 | ovs_mutex_lock(&ofproto_mutex); | |
7b900689 | 5350 | error = flow_monitor_delete(ofconn, id); |
15aaf599 | 5351 | ovs_mutex_unlock(&ofproto_mutex); |
2b07c8b1 | 5352 | |
15aaf599 | 5353 | return error; |
2b07c8b1 BP |
5354 | } |
5355 | ||
9cae45dc JR |
5356 | /* Meters implementation. |
5357 | * | |
5358 | * Meter table entry, indexed by the OpenFlow meter_id. | |
9cae45dc JR |
5359 | * 'created' is used to compute the duration for meter stats. |
5360 | * 'list rules' is needed so that we can delete the dependent rules when the | |
5361 | * meter table entry is deleted. | |
5362 | * 'provider_meter_id' is for the provider's private use. | |
5363 | */ | |
5364 | struct meter { | |
5365 | long long int created; /* Time created. */ | |
ca6ba700 | 5366 | struct ovs_list rules; /* List of "struct rule_dpif"s. */ |
9cae45dc JR |
5367 | ofproto_meter_id provider_meter_id; |
5368 | uint16_t flags; /* Meter flags. */ | |
5369 | uint16_t n_bands; /* Number of meter bands. */ | |
5370 | struct ofputil_meter_band *bands; | |
5371 | }; | |
5372 | ||
5373 | /* | |
5374 | * This is used in instruction validation at flow set-up time, | |
5375 | * as flows may not use non-existing meters. | |
9cae45dc JR |
5376 | * Return value of UINT32_MAX signifies an invalid meter. |
5377 | */ | |
65efd2ab JR |
5378 | static uint32_t |
5379 | get_provider_meter_id(const struct ofproto *ofproto, uint32_t of_meter_id) | |
9cae45dc JR |
5380 | { |
5381 | if (of_meter_id && of_meter_id <= ofproto->meter_features.max_meters) { | |
5382 | const struct meter *meter = ofproto->meters[of_meter_id]; | |
5383 | if (meter) { | |
5384 | return meter->provider_meter_id.uint32; | |
5385 | } | |
5386 | } | |
5387 | return UINT32_MAX; | |
5388 | } | |
5389 | ||
062fea06 BP |
5390 | /* Finds the meter invoked by 'rule''s actions and adds 'rule' to the meter's |
5391 | * list of rules. */ | |
5392 | static void | |
5393 | meter_insert_rule(struct rule *rule) | |
5394 | { | |
5395 | const struct rule_actions *a = rule_get_actions(rule); | |
5396 | uint32_t meter_id = ofpacts_get_meter(a->ofpacts, a->ofpacts_len); | |
5397 | struct meter *meter = rule->ofproto->meters[meter_id]; | |
5398 | ||
5399 | list_insert(&meter->rules, &rule->meter_list_node); | |
5400 | } | |
5401 | ||
9cae45dc JR |
5402 | static void |
5403 | meter_update(struct meter *meter, const struct ofputil_meter_config *config) | |
5404 | { | |
5405 | free(meter->bands); | |
5406 | ||
5407 | meter->flags = config->flags; | |
5408 | meter->n_bands = config->n_bands; | |
5409 | meter->bands = xmemdup(config->bands, | |
5410 | config->n_bands * sizeof *meter->bands); | |
5411 | } | |
5412 | ||
5413 | static struct meter * | |
5414 | meter_create(const struct ofputil_meter_config *config, | |
5415 | ofproto_meter_id provider_meter_id) | |
5416 | { | |
5417 | struct meter *meter; | |
5418 | ||
5419 | meter = xzalloc(sizeof *meter); | |
5420 | meter->provider_meter_id = provider_meter_id; | |
5421 | meter->created = time_msec(); | |
5422 | list_init(&meter->rules); | |
5423 | ||
5424 | meter_update(meter, config); | |
5425 | ||
5426 | return meter; | |
5427 | } | |
5428 | ||
6b3f7f02 JR |
5429 | static void |
5430 | meter_delete(struct ofproto *ofproto, uint32_t first, uint32_t last) | |
15aaf599 | 5431 | OVS_REQUIRES(ofproto_mutex) |
6b3f7f02 JR |
5432 | { |
5433 | uint32_t mid; | |
5434 | for (mid = first; mid <= last; ++mid) { | |
5435 | struct meter *meter = ofproto->meters[mid]; | |
5436 | if (meter) { | |
5437 | ofproto->meters[mid] = NULL; | |
5438 | ofproto->ofproto_class->meter_del(ofproto, | |
5439 | meter->provider_meter_id); | |
5440 | free(meter->bands); | |
5441 | free(meter); | |
5442 | } | |
5443 | } | |
5444 | } | |
5445 | ||
9cae45dc JR |
5446 | static enum ofperr |
5447 | handle_add_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm) | |
5448 | { | |
5449 | ofproto_meter_id provider_meter_id = { UINT32_MAX }; | |
5450 | struct meter **meterp = &ofproto->meters[mm->meter.meter_id]; | |
5451 | enum ofperr error; | |
5452 | ||
5453 | if (*meterp) { | |
5454 | return OFPERR_OFPMMFC_METER_EXISTS; | |
5455 | } | |
5456 | ||
5457 | error = ofproto->ofproto_class->meter_set(ofproto, &provider_meter_id, | |
5458 | &mm->meter); | |
5459 | if (!error) { | |
5460 | ovs_assert(provider_meter_id.uint32 != UINT32_MAX); | |
5461 | *meterp = meter_create(&mm->meter, provider_meter_id); | |
5462 | } | |
f0f8c6c2 | 5463 | return error; |
9cae45dc JR |
5464 | } |
5465 | ||
5466 | static enum ofperr | |
5467 | handle_modify_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm) | |
5468 | { | |
5469 | struct meter *meter = ofproto->meters[mm->meter.meter_id]; | |
5470 | enum ofperr error; | |
e555eb7c | 5471 | uint32_t provider_meter_id; |
9cae45dc JR |
5472 | |
5473 | if (!meter) { | |
5474 | return OFPERR_OFPMMFC_UNKNOWN_METER; | |
5475 | } | |
5476 | ||
e555eb7c | 5477 | provider_meter_id = meter->provider_meter_id.uint32; |
9cae45dc JR |
5478 | error = ofproto->ofproto_class->meter_set(ofproto, |
5479 | &meter->provider_meter_id, | |
5480 | &mm->meter); | |
e555eb7c | 5481 | ovs_assert(meter->provider_meter_id.uint32 == provider_meter_id); |
9cae45dc JR |
5482 | if (!error) { |
5483 | meter_update(meter, &mm->meter); | |
5484 | } | |
5485 | return error; | |
5486 | } | |
5487 | ||
5488 | static enum ofperr | |
baae3d02 | 5489 | handle_delete_meter(struct ofconn *ofconn, struct ofputil_meter_mod *mm) |
15aaf599 | 5490 | OVS_EXCLUDED(ofproto_mutex) |
9cae45dc JR |
5491 | { |
5492 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5493 | uint32_t meter_id = mm->meter.meter_id; | |
a8e547c1 BP |
5494 | struct rule_collection rules; |
5495 | enum ofperr error = 0; | |
9cae45dc | 5496 | uint32_t first, last; |
9cae45dc JR |
5497 | |
5498 | if (meter_id == OFPM13_ALL) { | |
5499 | first = 1; | |
5500 | last = ofproto->meter_features.max_meters; | |
5501 | } else { | |
5502 | if (!meter_id || meter_id > ofproto->meter_features.max_meters) { | |
5503 | return 0; | |
5504 | } | |
5505 | first = last = meter_id; | |
5506 | } | |
5507 | ||
5508 | /* First delete the rules that use this meter. If any of those rules are | |
5509 | * currently being modified, postpone the whole operation until later. */ | |
a8e547c1 | 5510 | rule_collection_init(&rules); |
15aaf599 | 5511 | ovs_mutex_lock(&ofproto_mutex); |
9cae45dc JR |
5512 | for (meter_id = first; meter_id <= last; ++meter_id) { |
5513 | struct meter *meter = ofproto->meters[meter_id]; | |
5514 | if (meter && !list_is_empty(&meter->rules)) { | |
5515 | struct rule *rule; | |
5516 | ||
5517 | LIST_FOR_EACH (rule, meter_list_node, &meter->rules) { | |
a8e547c1 | 5518 | rule_collection_add(&rules, rule); |
9cae45dc JR |
5519 | } |
5520 | } | |
5521 | } | |
802f84ff | 5522 | delete_flows__(&rules, OFPRR_METER_DELETE, NULL); |
9cae45dc JR |
5523 | |
5524 | /* Delete the meters. */ | |
6b3f7f02 | 5525 | meter_delete(ofproto, first, last); |
9cae45dc | 5526 | |
15aaf599 | 5527 | ovs_mutex_unlock(&ofproto_mutex); |
a8e547c1 BP |
5528 | rule_collection_destroy(&rules); |
5529 | ||
5530 | return error; | |
9cae45dc JR |
5531 | } |
5532 | ||
5533 | static enum ofperr | |
5534 | handle_meter_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
5535 | { | |
5536 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5537 | struct ofputil_meter_mod mm; | |
5538 | uint64_t bands_stub[256 / 8]; | |
5539 | struct ofpbuf bands; | |
5540 | uint32_t meter_id; | |
5541 | enum ofperr error; | |
5542 | ||
5543 | error = reject_slave_controller(ofconn); | |
5544 | if (error) { | |
5545 | return error; | |
5546 | } | |
5547 | ||
5548 | ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub); | |
5549 | ||
5550 | error = ofputil_decode_meter_mod(oh, &mm, &bands); | |
5551 | if (error) { | |
5552 | goto exit_free_bands; | |
5553 | } | |
5554 | ||
5555 | meter_id = mm.meter.meter_id; | |
5556 | ||
5557 | if (mm.command != OFPMC13_DELETE) { | |
5558 | /* Fails also when meters are not implemented by the provider. */ | |
b31e8700 | 5559 | if (meter_id == 0 || meter_id > OFPM13_MAX) { |
9cae45dc JR |
5560 | error = OFPERR_OFPMMFC_INVALID_METER; |
5561 | goto exit_free_bands; | |
b31e8700 JR |
5562 | } else if (meter_id > ofproto->meter_features.max_meters) { |
5563 | error = OFPERR_OFPMMFC_OUT_OF_METERS; | |
5564 | goto exit_free_bands; | |
9cae45dc JR |
5565 | } |
5566 | if (mm.meter.n_bands > ofproto->meter_features.max_bands) { | |
5567 | error = OFPERR_OFPMMFC_OUT_OF_BANDS; | |
5568 | goto exit_free_bands; | |
5569 | } | |
5570 | } | |
5571 | ||
5572 | switch (mm.command) { | |
5573 | case OFPMC13_ADD: | |
5574 | error = handle_add_meter(ofproto, &mm); | |
5575 | break; | |
5576 | ||
5577 | case OFPMC13_MODIFY: | |
5578 | error = handle_modify_meter(ofproto, &mm); | |
5579 | break; | |
5580 | ||
5581 | case OFPMC13_DELETE: | |
baae3d02 | 5582 | error = handle_delete_meter(ofconn, &mm); |
9cae45dc JR |
5583 | break; |
5584 | ||
5585 | default: | |
5586 | error = OFPERR_OFPMMFC_BAD_COMMAND; | |
5587 | break; | |
5588 | } | |
5589 | ||
5590 | exit_free_bands: | |
5591 | ofpbuf_uninit(&bands); | |
5592 | return error; | |
5593 | } | |
5594 | ||
5595 | static enum ofperr | |
5596 | handle_meter_features_request(struct ofconn *ofconn, | |
5597 | const struct ofp_header *request) | |
5598 | { | |
5599 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5600 | struct ofputil_meter_features features; | |
5601 | struct ofpbuf *b; | |
5602 | ||
5603 | if (ofproto->ofproto_class->meter_get_features) { | |
5604 | ofproto->ofproto_class->meter_get_features(ofproto, &features); | |
5605 | } else { | |
5606 | memset(&features, 0, sizeof features); | |
5607 | } | |
5608 | b = ofputil_encode_meter_features_reply(&features, request); | |
5609 | ||
5610 | ofconn_send_reply(ofconn, b); | |
5611 | return 0; | |
5612 | } | |
5613 | ||
5614 | static enum ofperr | |
5615 | handle_meter_request(struct ofconn *ofconn, const struct ofp_header *request, | |
5616 | enum ofptype type) | |
5617 | { | |
5618 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
ca6ba700 | 5619 | struct ovs_list replies; |
9cae45dc JR |
5620 | uint64_t bands_stub[256 / 8]; |
5621 | struct ofpbuf bands; | |
5622 | uint32_t meter_id, first, last; | |
5623 | ||
5624 | ofputil_decode_meter_request(request, &meter_id); | |
5625 | ||
5626 | if (meter_id == OFPM13_ALL) { | |
5627 | first = 1; | |
5628 | last = ofproto->meter_features.max_meters; | |
5629 | } else { | |
5630 | if (!meter_id || meter_id > ofproto->meter_features.max_meters || | |
5631 | !ofproto->meters[meter_id]) { | |
5632 | return OFPERR_OFPMMFC_UNKNOWN_METER; | |
5633 | } | |
5634 | first = last = meter_id; | |
5635 | } | |
5636 | ||
5637 | ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub); | |
5638 | ofpmp_init(&replies, request); | |
5639 | ||
5640 | for (meter_id = first; meter_id <= last; ++meter_id) { | |
5641 | struct meter *meter = ofproto->meters[meter_id]; | |
5642 | if (!meter) { | |
5643 | continue; /* Skip non-existing meters. */ | |
5644 | } | |
261bd854 | 5645 | if (type == OFPTYPE_METER_STATS_REQUEST) { |
9cae45dc JR |
5646 | struct ofputil_meter_stats stats; |
5647 | ||
5648 | stats.meter_id = meter_id; | |
5649 | ||
5650 | /* Provider sets the packet and byte counts, we do the rest. */ | |
5651 | stats.flow_count = list_size(&meter->rules); | |
5652 | calc_duration(meter->created, time_msec(), | |
5653 | &stats.duration_sec, &stats.duration_nsec); | |
5654 | stats.n_bands = meter->n_bands; | |
5655 | ofpbuf_clear(&bands); | |
5656 | stats.bands | |
5657 | = ofpbuf_put_uninit(&bands, | |
5658 | meter->n_bands * sizeof *stats.bands); | |
5659 | ||
5660 | if (!ofproto->ofproto_class->meter_get(ofproto, | |
5661 | meter->provider_meter_id, | |
5662 | &stats)) { | |
5663 | ofputil_append_meter_stats(&replies, &stats); | |
5664 | } | |
5665 | } else { /* type == OFPTYPE_METER_CONFIG_REQUEST */ | |
5666 | struct ofputil_meter_config config; | |
5667 | ||
5668 | config.meter_id = meter_id; | |
5669 | config.flags = meter->flags; | |
5670 | config.n_bands = meter->n_bands; | |
5671 | config.bands = meter->bands; | |
5672 | ofputil_append_meter_config(&replies, &config); | |
5673 | } | |
5674 | } | |
5675 | ||
5676 | ofconn_send_replies(ofconn, &replies); | |
5677 | ofpbuf_uninit(&bands); | |
5678 | return 0; | |
5679 | } | |
5680 | ||
3fc3b679 AZ |
5681 | static bool |
5682 | ofproto_group_lookup__(const struct ofproto *ofproto, uint32_t group_id, | |
5683 | struct ofgroup **group) | |
5684 | OVS_REQ_RDLOCK(ofproto->groups_rwlock) | |
7395c052 | 5685 | { |
7395c052 NZ |
5686 | HMAP_FOR_EACH_IN_BUCKET (*group, hmap_node, |
5687 | hash_int(group_id, 0), &ofproto->groups) { | |
5688 | if ((*group)->group_id == group_id) { | |
7395c052 NZ |
5689 | return true; |
5690 | } | |
5691 | } | |
3fc3b679 | 5692 | |
7395c052 NZ |
5693 | return false; |
5694 | } | |
5695 | ||
3fc3b679 AZ |
5696 | /* If the group exists, this function increments the groups's reference count. |
5697 | * | |
5698 | * Make sure to call ofproto_group_unref() after no longer needing to maintain | |
5699 | * a reference to the group. */ | |
5700 | bool | |
5701 | ofproto_group_lookup(const struct ofproto *ofproto, uint32_t group_id, | |
5702 | struct ofgroup **group) | |
7395c052 | 5703 | { |
3fc3b679 AZ |
5704 | bool found; |
5705 | ||
5706 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
5707 | found = ofproto_group_lookup__(ofproto, group_id, group); | |
5708 | if (found) { | |
5709 | ofproto_group_ref(*group); | |
7395c052 | 5710 | } |
3fc3b679 AZ |
5711 | ovs_rwlock_unlock(&ofproto->groups_rwlock); |
5712 | return found; | |
7395c052 NZ |
5713 | } |
5714 | ||
5715 | static bool | |
7e9f8266 | 5716 | ofproto_group_exists__(const struct ofproto *ofproto, uint32_t group_id) |
7395c052 NZ |
5717 | OVS_REQ_RDLOCK(ofproto->groups_rwlock) |
5718 | { | |
5719 | struct ofgroup *grp; | |
5720 | ||
5721 | HMAP_FOR_EACH_IN_BUCKET (grp, hmap_node, | |
5722 | hash_int(group_id, 0), &ofproto->groups) { | |
5723 | if (grp->group_id == group_id) { | |
5724 | return true; | |
5725 | } | |
5726 | } | |
5727 | return false; | |
5728 | } | |
5729 | ||
7e9f8266 BP |
5730 | static bool |
5731 | ofproto_group_exists(const struct ofproto *ofproto, uint32_t group_id) | |
5732 | OVS_EXCLUDED(ofproto->groups_rwlock) | |
5733 | { | |
5734 | bool exists; | |
5735 | ||
5736 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
5737 | exists = ofproto_group_exists__(ofproto, group_id); | |
5738 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5739 | ||
5740 | return exists; | |
5741 | } | |
5742 | ||
732feb93 SH |
5743 | static uint32_t |
5744 | group_get_ref_count(struct ofgroup *group) | |
5745 | OVS_EXCLUDED(ofproto_mutex) | |
5746 | { | |
eaf004bd | 5747 | struct ofproto *ofproto = CONST_CAST(struct ofproto *, group->ofproto); |
732feb93 SH |
5748 | struct rule_criteria criteria; |
5749 | struct rule_collection rules; | |
5750 | struct match match; | |
5751 | enum ofperr error; | |
5752 | uint32_t count; | |
5753 | ||
5754 | match_init_catchall(&match); | |
5755 | rule_criteria_init(&criteria, 0xff, &match, 0, htonll(0), htonll(0), | |
5756 | OFPP_ANY, group->group_id); | |
5757 | ovs_mutex_lock(&ofproto_mutex); | |
5758 | error = collect_rules_loose(ofproto, &criteria, &rules); | |
5759 | ovs_mutex_unlock(&ofproto_mutex); | |
5760 | rule_criteria_destroy(&criteria); | |
5761 | ||
5762 | count = !error && rules.n < UINT32_MAX ? rules.n : UINT32_MAX; | |
5763 | ||
5764 | rule_collection_destroy(&rules); | |
5765 | return count; | |
5766 | } | |
5767 | ||
7395c052 | 5768 | static void |
ca6ba700 | 5769 | append_group_stats(struct ofgroup *group, struct ovs_list *replies) |
7395c052 NZ |
5770 | { |
5771 | struct ofputil_group_stats ogs; | |
eaf004bd | 5772 | const struct ofproto *ofproto = group->ofproto; |
7395c052 NZ |
5773 | long long int now = time_msec(); |
5774 | int error; | |
5775 | ||
646b2a9c SH |
5776 | ogs.bucket_stats = xmalloc(group->n_buckets * sizeof *ogs.bucket_stats); |
5777 | ||
732feb93 SH |
5778 | /* Provider sets the packet and byte counts, we do the rest. */ |
5779 | ogs.ref_count = group_get_ref_count(group); | |
5780 | ogs.n_buckets = group->n_buckets; | |
5781 | ||
7395c052 NZ |
5782 | error = (ofproto->ofproto_class->group_get_stats |
5783 | ? ofproto->ofproto_class->group_get_stats(group, &ogs) | |
5784 | : EOPNOTSUPP); | |
5785 | if (error) { | |
7395c052 NZ |
5786 | ogs.packet_count = UINT64_MAX; |
5787 | ogs.byte_count = UINT64_MAX; | |
7395c052 NZ |
5788 | memset(ogs.bucket_stats, 0xff, |
5789 | ogs.n_buckets * sizeof *ogs.bucket_stats); | |
5790 | } | |
5791 | ||
5792 | ogs.group_id = group->group_id; | |
5793 | calc_duration(group->created, now, &ogs.duration_sec, &ogs.duration_nsec); | |
5794 | ||
5795 | ofputil_append_group_stats(replies, &ogs); | |
646b2a9c SH |
5796 | |
5797 | free(ogs.bucket_stats); | |
7395c052 NZ |
5798 | } |
5799 | ||
19187a71 BP |
5800 | static void |
5801 | handle_group_request(struct ofconn *ofconn, | |
5802 | const struct ofp_header *request, uint32_t group_id, | |
ca6ba700 | 5803 | void (*cb)(struct ofgroup *, struct ovs_list *replies)) |
7395c052 NZ |
5804 | { |
5805 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
7395c052 | 5806 | struct ofgroup *group; |
ca6ba700 | 5807 | struct ovs_list replies; |
7395c052 NZ |
5808 | |
5809 | ofpmp_init(&replies, request); | |
7395c052 NZ |
5810 | if (group_id == OFPG_ALL) { |
5811 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
5812 | HMAP_FOR_EACH (group, hmap_node, &ofproto->groups) { | |
19187a71 | 5813 | cb(group, &replies); |
7395c052 NZ |
5814 | } |
5815 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5816 | } else { | |
5817 | if (ofproto_group_lookup(ofproto, group_id, &group)) { | |
19187a71 | 5818 | cb(group, &replies); |
809c7548 | 5819 | ofproto_group_unref(group); |
7395c052 NZ |
5820 | } |
5821 | } | |
7395c052 | 5822 | ofconn_send_replies(ofconn, &replies); |
7395c052 NZ |
5823 | } |
5824 | ||
5825 | static enum ofperr | |
19187a71 BP |
5826 | handle_group_stats_request(struct ofconn *ofconn, |
5827 | const struct ofp_header *request) | |
7395c052 | 5828 | { |
19187a71 BP |
5829 | uint32_t group_id; |
5830 | enum ofperr error; | |
7395c052 | 5831 | |
19187a71 BP |
5832 | error = ofputil_decode_group_stats_request(request, &group_id); |
5833 | if (error) { | |
5834 | return error; | |
7395c052 | 5835 | } |
7395c052 | 5836 | |
19187a71 BP |
5837 | handle_group_request(ofconn, request, group_id, append_group_stats); |
5838 | return 0; | |
5839 | } | |
5840 | ||
5841 | static void | |
ca6ba700 | 5842 | append_group_desc(struct ofgroup *group, struct ovs_list *replies) |
19187a71 BP |
5843 | { |
5844 | struct ofputil_group_desc gds; | |
7395c052 | 5845 | |
19187a71 BP |
5846 | gds.group_id = group->group_id; |
5847 | gds.type = group->type; | |
53eb84a5 SH |
5848 | gds.props = group->props; |
5849 | ||
19187a71 BP |
5850 | ofputil_append_group_desc_reply(&gds, &group->buckets, replies); |
5851 | } | |
5852 | ||
5853 | static enum ofperr | |
5854 | handle_group_desc_stats_request(struct ofconn *ofconn, | |
5855 | const struct ofp_header *request) | |
5856 | { | |
5857 | handle_group_request(ofconn, request, | |
5858 | ofputil_decode_group_desc_request(request), | |
5859 | append_group_desc); | |
7395c052 NZ |
5860 | return 0; |
5861 | } | |
5862 | ||
5863 | static enum ofperr | |
5864 | handle_group_features_stats_request(struct ofconn *ofconn, | |
5865 | const struct ofp_header *request) | |
5866 | { | |
5867 | struct ofproto *p = ofconn_get_ofproto(ofconn); | |
5868 | struct ofpbuf *msg; | |
5869 | ||
5870 | msg = ofputil_encode_group_features_reply(&p->ogf, request); | |
5871 | if (msg) { | |
5872 | ofconn_send_reply(ofconn, msg); | |
5873 | } | |
5874 | ||
5875 | return 0; | |
5876 | } | |
5877 | ||
e8f9a7bb VG |
5878 | static enum ofperr |
5879 | handle_queue_get_config_request(struct ofconn *ofconn, | |
5880 | const struct ofp_header *oh) | |
5881 | { | |
5882 | struct ofproto *p = ofconn_get_ofproto(ofconn); | |
5883 | struct netdev_queue_dump queue_dump; | |
5884 | struct ofport *ofport; | |
5885 | unsigned int queue_id; | |
5886 | struct ofpbuf *reply; | |
5887 | struct smap details; | |
5888 | ofp_port_t request; | |
5889 | enum ofperr error; | |
5890 | ||
5891 | error = ofputil_decode_queue_get_config_request(oh, &request); | |
5892 | if (error) { | |
5893 | return error; | |
5894 | } | |
5895 | ||
5896 | ofport = ofproto_get_port(p, request); | |
5897 | if (!ofport) { | |
5898 | return OFPERR_OFPQOFC_BAD_PORT; | |
5899 | } | |
5900 | ||
5901 | reply = ofputil_encode_queue_get_config_reply(oh); | |
5902 | ||
5903 | smap_init(&details); | |
5904 | NETDEV_QUEUE_FOR_EACH (&queue_id, &details, &queue_dump, ofport->netdev) { | |
5905 | struct ofputil_queue_config queue; | |
5906 | ||
5907 | /* None of the existing queues have compatible properties, so we | |
5908 | * hard-code omitting min_rate and max_rate. */ | |
5909 | queue.queue_id = queue_id; | |
5910 | queue.min_rate = UINT16_MAX; | |
5911 | queue.max_rate = UINT16_MAX; | |
5912 | ofputil_append_queue_get_config_reply(reply, &queue); | |
5913 | } | |
5914 | smap_destroy(&details); | |
5915 | ||
5916 | ofconn_send_reply(ofconn, reply); | |
5917 | ||
5918 | return 0; | |
5919 | } | |
5920 | ||
809c7548 RW |
5921 | static enum ofperr |
5922 | init_group(struct ofproto *ofproto, struct ofputil_group_mod *gm, | |
5923 | struct ofgroup **ofgroup) | |
5924 | { | |
5925 | enum ofperr error; | |
eaf004bd | 5926 | const long long int now = time_msec(); |
809c7548 RW |
5927 | |
5928 | if (gm->group_id > OFPG_MAX) { | |
5929 | return OFPERR_OFPGMFC_INVALID_GROUP; | |
5930 | } | |
5931 | if (gm->type > OFPGT11_FF) { | |
5932 | return OFPERR_OFPGMFC_BAD_TYPE; | |
5933 | } | |
5934 | ||
5935 | *ofgroup = ofproto->ofproto_class->group_alloc(); | |
5936 | if (!*ofgroup) { | |
5937 | VLOG_WARN_RL(&rl, "%s: failed to allocate group", ofproto->name); | |
5938 | return OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
5939 | } | |
5940 | ||
eaf004bd AZ |
5941 | (*ofgroup)->ofproto = ofproto; |
5942 | *CONST_CAST(uint32_t *, &((*ofgroup)->group_id)) = gm->group_id; | |
5943 | *CONST_CAST(enum ofp11_group_type *, &(*ofgroup)->type) = gm->type; | |
5944 | *CONST_CAST(long long int *, &((*ofgroup)->created)) = now; | |
5945 | *CONST_CAST(long long int *, &((*ofgroup)->modified)) = now; | |
809c7548 RW |
5946 | ovs_refcount_init(&(*ofgroup)->ref_count); |
5947 | ||
5948 | list_move(&(*ofgroup)->buckets, &gm->buckets); | |
eaf004bd AZ |
5949 | *CONST_CAST(uint32_t *, &(*ofgroup)->n_buckets) = |
5950 | list_size(&(*ofgroup)->buckets); | |
809c7548 | 5951 | |
bc65c25a SH |
5952 | memcpy(CONST_CAST(struct ofputil_group_props *, &(*ofgroup)->props), |
5953 | &gm->props, sizeof (struct ofputil_group_props)); | |
5954 | ||
809c7548 RW |
5955 | /* Construct called BEFORE any locks are held. */ |
5956 | error = ofproto->ofproto_class->group_construct(*ofgroup); | |
5957 | if (error) { | |
5958 | ofputil_bucket_list_destroy(&(*ofgroup)->buckets); | |
5959 | ofproto->ofproto_class->group_dealloc(*ofgroup); | |
5960 | } | |
5961 | return error; | |
5962 | } | |
5963 | ||
6c5b90ce BP |
5964 | /* Implements the OFPGC11_ADD operation specified by 'gm', adding a group to |
5965 | * 'ofproto''s group table. Returns 0 on success or an OpenFlow error code on | |
5966 | * failure. */ | |
7395c052 NZ |
5967 | static enum ofperr |
5968 | add_group(struct ofproto *ofproto, struct ofputil_group_mod *gm) | |
5969 | { | |
5970 | struct ofgroup *ofgroup; | |
5971 | enum ofperr error; | |
5972 | ||
7395c052 | 5973 | /* Allocate new group and initialize it. */ |
809c7548 | 5974 | error = init_group(ofproto, gm, &ofgroup); |
7395c052 | 5975 | if (error) { |
809c7548 | 5976 | return error; |
7395c052 NZ |
5977 | } |
5978 | ||
5979 | /* We wrlock as late as possible to minimize the time we jam any other | |
5980 | * threads: No visible state changes before acquiring the lock. */ | |
5981 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
5982 | ||
5983 | if (ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) { | |
5984 | error = OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
5985 | goto unlock_out; | |
5986 | } | |
5987 | ||
7e9f8266 | 5988 | if (ofproto_group_exists__(ofproto, gm->group_id)) { |
7395c052 NZ |
5989 | error = OFPERR_OFPGMFC_GROUP_EXISTS; |
5990 | goto unlock_out; | |
5991 | } | |
5992 | ||
5993 | if (!error) { | |
5994 | /* Insert new group. */ | |
5995 | hmap_insert(&ofproto->groups, &ofgroup->hmap_node, | |
5996 | hash_int(ofgroup->group_id, 0)); | |
5997 | ofproto->n_groups[ofgroup->type]++; | |
5998 | ||
5999 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
6000 | return error; | |
6001 | } | |
6002 | ||
6003 | unlock_out: | |
6004 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
6005 | ofproto->ofproto_class->group_destruct(ofgroup); | |
7395c052 NZ |
6006 | ofputil_bucket_list_destroy(&ofgroup->buckets); |
6007 | ofproto->ofproto_class->group_dealloc(ofgroup); | |
6008 | ||
6009 | return error; | |
6010 | } | |
6011 | ||
fce4730c SH |
6012 | /* Adds all of the buckets from 'ofgroup' to 'new_ofgroup'. The buckets |
6013 | * already in 'new_ofgroup' will be placed just after the (copy of the) bucket | |
6014 | * in 'ofgroup' with bucket ID 'command_bucket_id'. Special | |
6015 | * 'command_bucket_id' values OFPG15_BUCKET_FIRST and OFPG15_BUCKET_LAST are | |
6016 | * also honored. */ | |
6017 | static enum ofperr | |
6018 | copy_buckets_for_insert_bucket(const struct ofgroup *ofgroup, | |
6019 | struct ofgroup *new_ofgroup, | |
6020 | uint32_t command_bucket_id) | |
6021 | { | |
6022 | struct ofputil_bucket *last = NULL; | |
6023 | ||
6024 | if (command_bucket_id <= OFPG15_BUCKET_MAX) { | |
6025 | /* Check here to ensure that a bucket corresponding to | |
6026 | * command_bucket_id exists in the old bucket list. | |
6027 | * | |
6028 | * The subsequent search of below of new_ofgroup covers | |
6029 | * both buckets in the old bucket list and buckets added | |
6030 | * by the insert buckets group mod message this function processes. */ | |
6031 | if (!ofputil_bucket_find(&ofgroup->buckets, command_bucket_id)) { | |
6032 | return OFPERR_OFPGMFC_UNKNOWN_BUCKET; | |
6033 | } | |
6034 | ||
6035 | if (!list_is_empty(&new_ofgroup->buckets)) { | |
6036 | last = ofputil_bucket_list_back(&new_ofgroup->buckets); | |
6037 | } | |
6038 | } | |
6039 | ||
6040 | ofputil_bucket_clone_list(&new_ofgroup->buckets, &ofgroup->buckets, NULL); | |
6041 | ||
6042 | if (ofputil_bucket_check_duplicate_id(&ofgroup->buckets)) { | |
6043 | VLOG_WARN_RL(&rl, "Duplicate bucket id"); | |
6044 | return OFPERR_OFPGMFC_BUCKET_EXISTS; | |
6045 | } | |
6046 | ||
6047 | /* Rearrange list according to command_bucket_id */ | |
6048 | if (command_bucket_id == OFPG15_BUCKET_LAST) { | |
6049 | struct ofputil_bucket *new_first; | |
6050 | const struct ofputil_bucket *first; | |
6051 | ||
6052 | first = ofputil_bucket_list_front(&ofgroup->buckets); | |
6053 | new_first = ofputil_bucket_find(&new_ofgroup->buckets, | |
6054 | first->bucket_id); | |
6055 | ||
6056 | list_splice(new_ofgroup->buckets.next, &new_first->list_node, | |
6057 | &new_ofgroup->buckets); | |
6058 | } else if (command_bucket_id <= OFPG15_BUCKET_MAX && last) { | |
6059 | struct ofputil_bucket *after; | |
6060 | ||
6061 | /* Presence of bucket is checked above so after should never be NULL */ | |
6062 | after = ofputil_bucket_find(&new_ofgroup->buckets, command_bucket_id); | |
6063 | ||
6064 | list_splice(after->list_node.next, new_ofgroup->buckets.next, | |
6065 | last->list_node.next); | |
6066 | } | |
6067 | ||
6068 | return 0; | |
6069 | } | |
6070 | ||
6071 | /* Appends all of the a copy of all the buckets from 'ofgroup' to 'new_ofgroup' | |
6072 | * with the exception of the bucket whose bucket id is 'command_bucket_id'. | |
6073 | * Special 'command_bucket_id' values OFPG15_BUCKET_FIRST, OFPG15_BUCKET_LAST | |
6074 | * and OFPG15_BUCKET_ALL are also honored. */ | |
6075 | static enum ofperr | |
6076 | copy_buckets_for_remove_bucket(const struct ofgroup *ofgroup, | |
6077 | struct ofgroup *new_ofgroup, | |
6078 | uint32_t command_bucket_id) | |
6079 | { | |
6080 | const struct ofputil_bucket *skip = NULL; | |
6081 | ||
6082 | if (command_bucket_id == OFPG15_BUCKET_ALL) { | |
6083 | return 0; | |
6084 | } | |
6085 | ||
6086 | if (command_bucket_id == OFPG15_BUCKET_FIRST) { | |
6087 | if (!list_is_empty(&ofgroup->buckets)) { | |
6088 | skip = ofputil_bucket_list_front(&ofgroup->buckets); | |
6089 | } | |
6090 | } else if (command_bucket_id == OFPG15_BUCKET_LAST) { | |
6091 | if (!list_is_empty(&ofgroup->buckets)) { | |
6092 | skip = ofputil_bucket_list_back(&ofgroup->buckets); | |
6093 | } | |
6094 | } else { | |
6095 | skip = ofputil_bucket_find(&ofgroup->buckets, command_bucket_id); | |
6096 | if (!skip) { | |
6097 | return OFPERR_OFPGMFC_UNKNOWN_BUCKET; | |
6098 | } | |
6099 | } | |
6100 | ||
6101 | ofputil_bucket_clone_list(&new_ofgroup->buckets, &ofgroup->buckets, skip); | |
6102 | ||
6103 | return 0; | |
6104 | } | |
6105 | ||
6106 | /* Implements OFPGC11_MODIFY, OFPGC15_INSERT_BUCKET and | |
6107 | * OFPGC15_REMOVE_BUCKET. Returns 0 on success or an OpenFlow error code | |
6c5b90ce | 6108 | * on failure. |
7395c052 | 6109 | * |
809c7548 RW |
6110 | * Note that the group is re-created and then replaces the old group in |
6111 | * ofproto's ofgroup hash map. Thus, the group is never altered while users of | |
6c5b90ce | 6112 | * the xlate module hold a pointer to the group. */ |
7395c052 NZ |
6113 | static enum ofperr |
6114 | modify_group(struct ofproto *ofproto, struct ofputil_group_mod *gm) | |
6115 | { | |
809c7548 | 6116 | struct ofgroup *ofgroup, *new_ofgroup, *retiring; |
7395c052 NZ |
6117 | enum ofperr error; |
6118 | ||
809c7548 RW |
6119 | error = init_group(ofproto, gm, &new_ofgroup); |
6120 | if (error) { | |
6121 | return error; | |
7395c052 NZ |
6122 | } |
6123 | ||
809c7548 | 6124 | retiring = new_ofgroup; |
7395c052 | 6125 | |
3fc3b679 AZ |
6126 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); |
6127 | if (!ofproto_group_lookup__(ofproto, gm->group_id, &ofgroup)) { | |
7395c052 | 6128 | error = OFPERR_OFPGMFC_UNKNOWN_GROUP; |
809c7548 | 6129 | goto out; |
7395c052 | 6130 | } |
809c7548 RW |
6131 | |
6132 | /* Ofproto's group write lock is held now. */ | |
7395c052 NZ |
6133 | if (ofgroup->type != gm->type |
6134 | && ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) { | |
6135 | error = OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
809c7548 | 6136 | goto out; |
7395c052 NZ |
6137 | } |
6138 | ||
fce4730c SH |
6139 | /* Manipulate bucket list for bucket commands */ |
6140 | if (gm->command == OFPGC15_INSERT_BUCKET) { | |
6141 | error = copy_buckets_for_insert_bucket(ofgroup, new_ofgroup, | |
6142 | gm->command_bucket_id); | |
6143 | } else if (gm->command == OFPGC15_REMOVE_BUCKET) { | |
6144 | error = copy_buckets_for_remove_bucket(ofgroup, new_ofgroup, | |
6145 | gm->command_bucket_id); | |
6146 | } | |
6147 | if (error) { | |
6148 | goto out; | |
6149 | } | |
6150 | ||
809c7548 | 6151 | /* The group creation time does not change during modification. */ |
eaf004bd AZ |
6152 | *CONST_CAST(long long int *, &(new_ofgroup->created)) = ofgroup->created; |
6153 | *CONST_CAST(long long int *, &(new_ofgroup->modified)) = time_msec(); | |
7395c052 | 6154 | |
809c7548 RW |
6155 | error = ofproto->ofproto_class->group_modify(new_ofgroup); |
6156 | if (error) { | |
6157 | goto out; | |
6158 | } | |
7395c052 | 6159 | |
809c7548 RW |
6160 | retiring = ofgroup; |
6161 | /* Replace ofgroup in ofproto's groups hash map with new_ofgroup. */ | |
6162 | hmap_remove(&ofproto->groups, &ofgroup->hmap_node); | |
6163 | hmap_insert(&ofproto->groups, &new_ofgroup->hmap_node, | |
6164 | hash_int(new_ofgroup->group_id, 0)); | |
6165 | if (ofgroup->type != new_ofgroup->type) { | |
6166 | ofproto->n_groups[ofgroup->type]--; | |
6167 | ofproto->n_groups[new_ofgroup->type]++; | |
7395c052 NZ |
6168 | } |
6169 | ||
809c7548 RW |
6170 | out: |
6171 | ofproto_group_unref(retiring); | |
7395c052 | 6172 | ovs_rwlock_unlock(&ofproto->groups_rwlock); |
7395c052 NZ |
6173 | return error; |
6174 | } | |
6175 | ||
6176 | static void | |
6177 | delete_group__(struct ofproto *ofproto, struct ofgroup *ofgroup) | |
6178 | OVS_RELEASES(ofproto->groups_rwlock) | |
6179 | { | |
276f6518 SH |
6180 | struct match match; |
6181 | struct ofputil_flow_mod fm; | |
6182 | ||
6183 | /* Delete all flow entries containing this group in a group action */ | |
6184 | match_init_catchall(&match); | |
6185 | flow_mod_init(&fm, &match, 0, NULL, 0, OFPFC_DELETE); | |
cc40d06b | 6186 | fm.delete_reason = OFPRR_GROUP_DELETE; |
276f6518 | 6187 | fm.out_group = ofgroup->group_id; |
baae3d02 | 6188 | handle_flow_mod__(ofproto, &fm, NULL); |
276f6518 | 6189 | |
7395c052 NZ |
6190 | hmap_remove(&ofproto->groups, &ofgroup->hmap_node); |
6191 | /* No-one can find this group any more. */ | |
6192 | ofproto->n_groups[ofgroup->type]--; | |
6193 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
809c7548 | 6194 | ofproto_group_unref(ofgroup); |
7395c052 NZ |
6195 | } |
6196 | ||
6c5b90ce | 6197 | /* Implements OFPGC11_DELETE. */ |
7395c052 NZ |
6198 | static void |
6199 | delete_group(struct ofproto *ofproto, uint32_t group_id) | |
6200 | { | |
6201 | struct ofgroup *ofgroup; | |
6202 | ||
6203 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
6204 | if (group_id == OFPG_ALL) { | |
6205 | for (;;) { | |
6206 | struct hmap_node *node = hmap_first(&ofproto->groups); | |
6207 | if (!node) { | |
6208 | break; | |
6209 | } | |
6210 | ofgroup = CONTAINER_OF(node, struct ofgroup, hmap_node); | |
6211 | delete_group__(ofproto, ofgroup); | |
6212 | /* Lock for each node separately, so that we will not jam the | |
6213 | * other threads for too long time. */ | |
6214 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
6215 | } | |
6216 | } else { | |
6217 | HMAP_FOR_EACH_IN_BUCKET (ofgroup, hmap_node, | |
6218 | hash_int(group_id, 0), &ofproto->groups) { | |
6219 | if (ofgroup->group_id == group_id) { | |
6220 | delete_group__(ofproto, ofgroup); | |
6221 | return; | |
6222 | } | |
6223 | } | |
6224 | } | |
6225 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
6226 | } | |
6227 | ||
6228 | static enum ofperr | |
6229 | handle_group_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
6230 | { | |
6231 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
6232 | struct ofputil_group_mod gm; | |
6233 | enum ofperr error; | |
6234 | ||
6235 | error = reject_slave_controller(ofconn); | |
6236 | if (error) { | |
6237 | return error; | |
6238 | } | |
6239 | ||
6240 | error = ofputil_decode_group_mod(oh, &gm); | |
6241 | if (error) { | |
6242 | return error; | |
6243 | } | |
6244 | ||
6245 | switch (gm.command) { | |
6246 | case OFPGC11_ADD: | |
6247 | return add_group(ofproto, &gm); | |
6248 | ||
6249 | case OFPGC11_MODIFY: | |
6250 | return modify_group(ofproto, &gm); | |
6251 | ||
6252 | case OFPGC11_DELETE: | |
6253 | delete_group(ofproto, gm.group_id); | |
6254 | return 0; | |
6255 | ||
fce4730c SH |
6256 | case OFPGC15_INSERT_BUCKET: |
6257 | return modify_group(ofproto, &gm); | |
6258 | ||
6259 | case OFPGC15_REMOVE_BUCKET: | |
6260 | return modify_group(ofproto, &gm); | |
6261 | ||
7395c052 NZ |
6262 | default: |
6263 | if (gm.command > OFPGC11_DELETE) { | |
6264 | VLOG_WARN_RL(&rl, "%s: Invalid group_mod command type %d", | |
6265 | ofproto->name, gm.command); | |
6266 | } | |
6267 | return OFPERR_OFPGMFC_BAD_COMMAND; | |
6268 | } | |
6269 | } | |
6270 | ||
3c1bb396 BP |
6271 | enum ofputil_table_miss |
6272 | ofproto_table_get_miss_config(const struct ofproto *ofproto, uint8_t table_id) | |
6d328fa2 | 6273 | { |
3c1bb396 | 6274 | enum ofputil_table_miss value; |
afcea9ea JR |
6275 | |
6276 | atomic_read_relaxed(&ofproto->tables[table_id].miss_config, &value); | |
3c1bb396 | 6277 | return value; |
6d328fa2 SH |
6278 | } |
6279 | ||
67761761 SH |
6280 | static enum ofperr |
6281 | table_mod(struct ofproto *ofproto, const struct ofputil_table_mod *tm) | |
6282 | { | |
3c1bb396 | 6283 | if (!check_table_id(ofproto, tm->table_id)) { |
67761761 | 6284 | return OFPERR_OFPTMFC_BAD_TABLE; |
3c1bb396 BP |
6285 | } else if (tm->miss_config != OFPUTIL_TABLE_MISS_DEFAULT) { |
6286 | if (tm->table_id == OFPTT_ALL) { | |
6287 | int i; | |
6288 | for (i = 0; i < ofproto->n_tables; i++) { | |
afcea9ea JR |
6289 | atomic_store_relaxed(&ofproto->tables[i].miss_config, |
6290 | tm->miss_config); | |
3c1bb396 BP |
6291 | } |
6292 | } else { | |
afcea9ea JR |
6293 | atomic_store_relaxed(&ofproto->tables[tm->table_id].miss_config, |
6294 | tm->miss_config); | |
3c1bb396 | 6295 | } |
67761761 | 6296 | } |
67761761 SH |
6297 | return 0; |
6298 | } | |
6299 | ||
918f2b82 AZ |
6300 | static enum ofperr |
6301 | handle_table_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
6302 | { | |
67761761 | 6303 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
918f2b82 AZ |
6304 | struct ofputil_table_mod tm; |
6305 | enum ofperr error; | |
6306 | ||
6307 | error = reject_slave_controller(ofconn); | |
6308 | if (error) { | |
6309 | return error; | |
6310 | } | |
6311 | ||
6312 | error = ofputil_decode_table_mod(oh, &tm); | |
6313 | if (error) { | |
6314 | return error; | |
6315 | } | |
6316 | ||
67761761 | 6317 | return table_mod(ofproto, &tm); |
918f2b82 AZ |
6318 | } |
6319 | ||
777af88d AC |
6320 | static enum ofperr |
6321 | handle_bundle_control(struct ofconn *ofconn, const struct ofp_header *oh) | |
6322 | { | |
6323 | enum ofperr error; | |
6324 | struct ofputil_bundle_ctrl_msg bctrl; | |
6325 | struct ofpbuf *buf; | |
6326 | struct ofputil_bundle_ctrl_msg reply; | |
6327 | ||
ba9d374a JR |
6328 | error = reject_slave_controller(ofconn); |
6329 | if (error) { | |
6330 | return error; | |
6331 | } | |
6332 | ||
777af88d AC |
6333 | error = ofputil_decode_bundle_ctrl(oh, &bctrl); |
6334 | if (error) { | |
6335 | return error; | |
6336 | } | |
6337 | reply.flags = 0; | |
6338 | reply.bundle_id = bctrl.bundle_id; | |
6339 | ||
6340 | switch (bctrl.type) { | |
6341 | case OFPBCT_OPEN_REQUEST: | |
6342 | error = ofp_bundle_open(ofconn, bctrl.bundle_id, bctrl.flags); | |
6343 | reply.type = OFPBCT_OPEN_REPLY; | |
6344 | break; | |
6345 | case OFPBCT_CLOSE_REQUEST: | |
6346 | error = ofp_bundle_close(ofconn, bctrl.bundle_id, bctrl.flags); | |
6347 | reply.type = OFPBCT_CLOSE_REPLY;; | |
6348 | break; | |
6349 | case OFPBCT_COMMIT_REQUEST: | |
6350 | error = ofp_bundle_commit(ofconn, bctrl.bundle_id, bctrl.flags); | |
6351 | reply.type = OFPBCT_COMMIT_REPLY; | |
6352 | break; | |
6353 | case OFPBCT_DISCARD_REQUEST: | |
6354 | error = ofp_bundle_discard(ofconn, bctrl.bundle_id); | |
6355 | reply.type = OFPBCT_DISCARD_REPLY; | |
6356 | break; | |
6357 | ||
6358 | case OFPBCT_OPEN_REPLY: | |
6359 | case OFPBCT_CLOSE_REPLY: | |
6360 | case OFPBCT_COMMIT_REPLY: | |
6361 | case OFPBCT_DISCARD_REPLY: | |
6362 | return OFPERR_OFPBFC_BAD_TYPE; | |
6363 | break; | |
6364 | } | |
6365 | ||
6366 | if (!error) { | |
6367 | buf = ofputil_encode_bundle_ctrl_reply(oh, &reply); | |
6368 | ofconn_send_reply(ofconn, buf); | |
6369 | } | |
6370 | return error; | |
6371 | } | |
6372 | ||
6373 | ||
6374 | static enum ofperr | |
6375 | handle_bundle_add(struct ofconn *ofconn, const struct ofp_header *oh) | |
6376 | { | |
7ac27a04 | 6377 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
777af88d AC |
6378 | enum ofperr error; |
6379 | struct ofputil_bundle_add_msg badd; | |
7ac27a04 JR |
6380 | struct ofp_bundle_entry *bmsg; |
6381 | enum ofptype type; | |
777af88d | 6382 | |
ba9d374a JR |
6383 | error = reject_slave_controller(ofconn); |
6384 | if (error) { | |
6385 | return error; | |
6386 | } | |
6387 | ||
7ac27a04 | 6388 | error = ofputil_decode_bundle_add(oh, &badd, &type); |
777af88d AC |
6389 | if (error) { |
6390 | return error; | |
6391 | } | |
6392 | ||
7ac27a04 JR |
6393 | bmsg = ofp_bundle_entry_alloc(type, badd.msg->xid); |
6394 | ||
6395 | if (type == OFPTYPE_PORT_MOD) { | |
6396 | error = ofputil_decode_port_mod(badd.msg, &bmsg->pm, false); | |
6397 | } else if (type == OFPTYPE_FLOW_MOD) { | |
6398 | struct ofpbuf ofpacts; | |
6399 | uint64_t ofpacts_stub[1024 / 8]; | |
6400 | ||
6401 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); | |
6402 | error = ofputil_decode_flow_mod(&bmsg->fm, badd.msg, | |
6403 | ofconn_get_protocol(ofconn), | |
6404 | &ofpacts, | |
6405 | u16_to_ofp(ofproto->max_ports), | |
6406 | ofproto->n_tables); | |
6407 | /* Move actions to heap. */ | |
6408 | bmsg->fm.ofpacts = ofpbuf_steal_data(&ofpacts); | |
6409 | ||
6410 | if (!error && bmsg->fm.ofpacts_len) { | |
6411 | error = ofproto_check_ofpacts(ofproto, bmsg->fm.ofpacts, | |
6412 | bmsg->fm.ofpacts_len); | |
6413 | } | |
6414 | } else { | |
6415 | OVS_NOT_REACHED(); | |
6416 | } | |
6417 | ||
6418 | if (!error) { | |
6419 | error = ofp_bundle_add_message(ofconn, badd.bundle_id, badd.flags, | |
6420 | bmsg); | |
6421 | } | |
6422 | ||
6423 | if (error) { | |
6424 | ofp_bundle_entry_free(bmsg); | |
6425 | } | |
6426 | ||
6427 | return error; | |
777af88d AC |
6428 | } |
6429 | ||
90bf1e07 | 6430 | static enum ofperr |
d1e2cf21 | 6431 | handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg) |
15aaf599 | 6432 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 6433 | { |
6fd6ed71 | 6434 | const struct ofp_header *oh = msg->data; |
982697a4 | 6435 | enum ofptype type; |
90bf1e07 | 6436 | enum ofperr error; |
064af421 | 6437 | |
982697a4 | 6438 | error = ofptype_decode(&type, oh); |
d1e2cf21 BP |
6439 | if (error) { |
6440 | return error; | |
6441 | } | |
ff3c2c63 YT |
6442 | if (oh->version >= OFP13_VERSION && ofpmsg_is_stat_request(oh) |
6443 | && ofpmp_more(oh)) { | |
6444 | /* We have no buffer implementation for multipart requests. | |
6445 | * Report overflow for requests which consists of multiple | |
6446 | * messages. */ | |
6447 | return OFPERR_OFPBRC_MULTIPART_BUFFER_OVERFLOW; | |
6448 | } | |
064af421 | 6449 | |
982697a4 | 6450 | switch (type) { |
d1e2cf21 | 6451 | /* OpenFlow requests. */ |
982697a4 | 6452 | case OFPTYPE_ECHO_REQUEST: |
d1e2cf21 | 6453 | return handle_echo_request(ofconn, oh); |
064af421 | 6454 | |
982697a4 | 6455 | case OFPTYPE_FEATURES_REQUEST: |
d1e2cf21 | 6456 | return handle_features_request(ofconn, oh); |
064af421 | 6457 | |
982697a4 | 6458 | case OFPTYPE_GET_CONFIG_REQUEST: |
d1e2cf21 | 6459 | return handle_get_config_request(ofconn, oh); |
064af421 | 6460 | |
982697a4 BP |
6461 | case OFPTYPE_SET_CONFIG: |
6462 | return handle_set_config(ofconn, oh); | |
064af421 | 6463 | |
982697a4 BP |
6464 | case OFPTYPE_PACKET_OUT: |
6465 | return handle_packet_out(ofconn, oh); | |
064af421 | 6466 | |
982697a4 | 6467 | case OFPTYPE_PORT_MOD: |
d1e2cf21 | 6468 | return handle_port_mod(ofconn, oh); |
064af421 | 6469 | |
982697a4 | 6470 | case OFPTYPE_FLOW_MOD: |
2e4f5fcf | 6471 | return handle_flow_mod(ofconn, oh); |
064af421 | 6472 | |
7395c052 NZ |
6473 | case OFPTYPE_GROUP_MOD: |
6474 | return handle_group_mod(ofconn, oh); | |
6475 | ||
918f2b82 AZ |
6476 | case OFPTYPE_TABLE_MOD: |
6477 | return handle_table_mod(ofconn, oh); | |
6478 | ||
9cae45dc JR |
6479 | case OFPTYPE_METER_MOD: |
6480 | return handle_meter_mod(ofconn, oh); | |
6481 | ||
982697a4 | 6482 | case OFPTYPE_BARRIER_REQUEST: |
d1e2cf21 | 6483 | return handle_barrier_request(ofconn, oh); |
064af421 | 6484 | |
6ea4776b JR |
6485 | case OFPTYPE_ROLE_REQUEST: |
6486 | return handle_role_request(ofconn, oh); | |
6487 | ||
d1e2cf21 | 6488 | /* OpenFlow replies. */ |
982697a4 | 6489 | case OFPTYPE_ECHO_REPLY: |
d1e2cf21 | 6490 | return 0; |
246e61ea | 6491 | |
d1e2cf21 | 6492 | /* Nicira extension requests. */ |
982697a4 | 6493 | case OFPTYPE_FLOW_MOD_TABLE_ID: |
6c1491fb | 6494 | return handle_nxt_flow_mod_table_id(ofconn, oh); |
d1e2cf21 | 6495 | |
982697a4 | 6496 | case OFPTYPE_SET_FLOW_FORMAT: |
d1e2cf21 BP |
6497 | return handle_nxt_set_flow_format(ofconn, oh); |
6498 | ||
982697a4 | 6499 | case OFPTYPE_SET_PACKET_IN_FORMAT: |
54834960 EJ |
6500 | return handle_nxt_set_packet_in_format(ofconn, oh); |
6501 | ||
982697a4 | 6502 | case OFPTYPE_SET_CONTROLLER_ID: |
a7349929 BP |
6503 | return handle_nxt_set_controller_id(ofconn, oh); |
6504 | ||
982697a4 | 6505 | case OFPTYPE_FLOW_AGE: |
f27f2134 BP |
6506 | /* Nothing to do. */ |
6507 | return 0; | |
6508 | ||
982697a4 | 6509 | case OFPTYPE_FLOW_MONITOR_CANCEL: |
2b07c8b1 BP |
6510 | return handle_flow_monitor_cancel(ofconn, oh); |
6511 | ||
982697a4 | 6512 | case OFPTYPE_SET_ASYNC_CONFIG: |
80d5aefd BP |
6513 | return handle_nxt_set_async_config(ofconn, oh); |
6514 | ||
c423b3b3 AC |
6515 | case OFPTYPE_GET_ASYNC_REQUEST: |
6516 | return handle_nxt_get_async_request(ofconn, oh); | |
6517 | ||
349adfb2 | 6518 | /* Statistics requests. */ |
982697a4 BP |
6519 | case OFPTYPE_DESC_STATS_REQUEST: |
6520 | return handle_desc_stats_request(ofconn, oh); | |
6521 | ||
6522 | case OFPTYPE_FLOW_STATS_REQUEST: | |
6523 | return handle_flow_stats_request(ofconn, oh); | |
6524 | ||
6525 | case OFPTYPE_AGGREGATE_STATS_REQUEST: | |
6526 | return handle_aggregate_stats_request(ofconn, oh); | |
6527 | ||
6528 | case OFPTYPE_TABLE_STATS_REQUEST: | |
6529 | return handle_table_stats_request(ofconn, oh); | |
6530 | ||
3c4e10fb BP |
6531 | case OFPTYPE_TABLE_FEATURES_STATS_REQUEST: |
6532 | return handle_table_features_request(ofconn, oh); | |
6533 | ||
982697a4 BP |
6534 | case OFPTYPE_PORT_STATS_REQUEST: |
6535 | return handle_port_stats_request(ofconn, oh); | |
6536 | ||
6537 | case OFPTYPE_QUEUE_STATS_REQUEST: | |
6538 | return handle_queue_stats_request(ofconn, oh); | |
6539 | ||
6540 | case OFPTYPE_PORT_DESC_STATS_REQUEST: | |
6541 | return handle_port_desc_stats_request(ofconn, oh); | |
6542 | ||
6543 | case OFPTYPE_FLOW_MONITOR_STATS_REQUEST: | |
6544 | return handle_flow_monitor_request(ofconn, oh); | |
6545 | ||
261bd854 BP |
6546 | case OFPTYPE_METER_STATS_REQUEST: |
6547 | case OFPTYPE_METER_CONFIG_STATS_REQUEST: | |
9cae45dc JR |
6548 | return handle_meter_request(ofconn, oh, type); |
6549 | ||
261bd854 | 6550 | case OFPTYPE_METER_FEATURES_STATS_REQUEST: |
9cae45dc JR |
6551 | return handle_meter_features_request(ofconn, oh); |
6552 | ||
261bd854 | 6553 | case OFPTYPE_GROUP_STATS_REQUEST: |
7395c052 NZ |
6554 | return handle_group_stats_request(ofconn, oh); |
6555 | ||
261bd854 | 6556 | case OFPTYPE_GROUP_DESC_STATS_REQUEST: |
7395c052 NZ |
6557 | return handle_group_desc_stats_request(ofconn, oh); |
6558 | ||
261bd854 | 6559 | case OFPTYPE_GROUP_FEATURES_STATS_REQUEST: |
7395c052 NZ |
6560 | return handle_group_features_stats_request(ofconn, oh); |
6561 | ||
7395c052 | 6562 | case OFPTYPE_QUEUE_GET_CONFIG_REQUEST: |
e8f9a7bb | 6563 | return handle_queue_get_config_request(ofconn, oh); |
2e1ae200 | 6564 | |
777af88d AC |
6565 | case OFPTYPE_BUNDLE_CONTROL: |
6566 | return handle_bundle_control(ofconn, oh); | |
6567 | ||
6568 | case OFPTYPE_BUNDLE_ADD_MESSAGE: | |
6569 | return handle_bundle_add(ofconn, oh); | |
6570 | ||
982697a4 BP |
6571 | case OFPTYPE_HELLO: |
6572 | case OFPTYPE_ERROR: | |
6573 | case OFPTYPE_FEATURES_REPLY: | |
6574 | case OFPTYPE_GET_CONFIG_REPLY: | |
6575 | case OFPTYPE_PACKET_IN: | |
6576 | case OFPTYPE_FLOW_REMOVED: | |
6577 | case OFPTYPE_PORT_STATUS: | |
6578 | case OFPTYPE_BARRIER_REPLY: | |
c545d38d | 6579 | case OFPTYPE_QUEUE_GET_CONFIG_REPLY: |
982697a4 BP |
6580 | case OFPTYPE_DESC_STATS_REPLY: |
6581 | case OFPTYPE_FLOW_STATS_REPLY: | |
6582 | case OFPTYPE_QUEUE_STATS_REPLY: | |
6583 | case OFPTYPE_PORT_STATS_REPLY: | |
6584 | case OFPTYPE_TABLE_STATS_REPLY: | |
6585 | case OFPTYPE_AGGREGATE_STATS_REPLY: | |
6586 | case OFPTYPE_PORT_DESC_STATS_REPLY: | |
6587 | case OFPTYPE_ROLE_REPLY: | |
6588 | case OFPTYPE_FLOW_MONITOR_PAUSED: | |
6589 | case OFPTYPE_FLOW_MONITOR_RESUMED: | |
6590 | case OFPTYPE_FLOW_MONITOR_STATS_REPLY: | |
2e1ae200 | 6591 | case OFPTYPE_GET_ASYNC_REPLY: |
261bd854 BP |
6592 | case OFPTYPE_GROUP_STATS_REPLY: |
6593 | case OFPTYPE_GROUP_DESC_STATS_REPLY: | |
6594 | case OFPTYPE_GROUP_FEATURES_STATS_REPLY: | |
6595 | case OFPTYPE_METER_STATS_REPLY: | |
6596 | case OFPTYPE_METER_CONFIG_STATS_REPLY: | |
6597 | case OFPTYPE_METER_FEATURES_STATS_REPLY: | |
6598 | case OFPTYPE_TABLE_FEATURES_STATS_REPLY: | |
252f3411 | 6599 | case OFPTYPE_ROLE_STATUS: |
064af421 | 6600 | default: |
76ec08e0 YT |
6601 | if (ofpmsg_is_stat_request(oh)) { |
6602 | return OFPERR_OFPBRC_BAD_STAT; | |
6603 | } else { | |
6604 | return OFPERR_OFPBRC_BAD_TYPE; | |
6605 | } | |
064af421 | 6606 | } |
d1e2cf21 | 6607 | } |
064af421 | 6608 | |
b20f4073 | 6609 | static void |
e03248b7 | 6610 | handle_openflow(struct ofconn *ofconn, const struct ofpbuf *ofp_msg) |
15aaf599 | 6611 | OVS_EXCLUDED(ofproto_mutex) |
d1e2cf21 BP |
6612 | { |
6613 | int error = handle_openflow__(ofconn, ofp_msg); | |
b20f4073 | 6614 | if (error) { |
6fd6ed71 | 6615 | ofconn_send_error(ofconn, ofp_msg->data, error); |
064af421 | 6616 | } |
d1e2cf21 | 6617 | COVERAGE_INC(ofproto_recv_openflow); |
7ee20df1 BP |
6618 | } |
6619 | \f | |
6620 | /* Asynchronous operations. */ | |
6621 | ||
834fe5cb BP |
6622 | static enum ofperr |
6623 | send_buffered_packet(struct ofconn *ofconn, uint32_t buffer_id, | |
6624 | struct rule *rule) | |
15aaf599 | 6625 | OVS_REQUIRES(ofproto_mutex) |
7ee20df1 | 6626 | { |
834fe5cb BP |
6627 | enum ofperr error = 0; |
6628 | if (ofconn && buffer_id != UINT32_MAX) { | |
6629 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
cf62fa4c | 6630 | struct dp_packet *packet; |
834fe5cb | 6631 | ofp_port_t in_port; |
b277c7cc | 6632 | |
834fe5cb BP |
6633 | error = ofconn_pktbuf_retrieve(ofconn, buffer_id, &packet, &in_port); |
6634 | if (packet) { | |
6635 | struct rule_execute *re; | |
b277c7cc | 6636 | |
834fe5cb | 6637 | ofproto_rule_ref(rule); |
b277c7cc | 6638 | |
834fe5cb BP |
6639 | re = xmalloc(sizeof *re); |
6640 | re->rule = rule; | |
6641 | re->in_port = in_port; | |
6642 | re->packet = packet; | |
b277c7cc | 6643 | |
834fe5cb BP |
6644 | if (!guarded_list_push_back(&ofproto->rule_executes, |
6645 | &re->list_node, 1024)) { | |
a2143702 | 6646 | ofproto_rule_unref(rule); |
cf62fa4c | 6647 | dp_packet_delete(re->packet); |
834fe5cb | 6648 | free(re); |
e615b0a3 | 6649 | } |
af822017 | 6650 | } |
7ee20df1 | 6651 | } |
834fe5cb | 6652 | return error; |
7ee20df1 | 6653 | } |
064af421 | 6654 | \f |
064af421 | 6655 | static uint64_t |
fa60c019 | 6656 | pick_datapath_id(const struct ofproto *ofproto) |
064af421 | 6657 | { |
fa60c019 | 6658 | const struct ofport *port; |
064af421 | 6659 | |
abe529af | 6660 | port = ofproto_get_port(ofproto, OFPP_LOCAL); |
fa60c019 BP |
6661 | if (port) { |
6662 | uint8_t ea[ETH_ADDR_LEN]; | |
6663 | int error; | |
6664 | ||
6665 | error = netdev_get_etheraddr(port->netdev, ea); | |
064af421 BP |
6666 | if (!error) { |
6667 | return eth_addr_to_uint64(ea); | |
6668 | } | |
fbfa2911 BP |
6669 | VLOG_WARN("%s: could not get MAC address for %s (%s)", |
6670 | ofproto->name, netdev_get_name(port->netdev), | |
10a89ef0 | 6671 | ovs_strerror(error)); |
064af421 | 6672 | } |
fa60c019 | 6673 | return ofproto->fallback_dpid; |
064af421 BP |
6674 | } |
6675 | ||
6676 | static uint64_t | |
6677 | pick_fallback_dpid(void) | |
6678 | { | |
6679 | uint8_t ea[ETH_ADDR_LEN]; | |
70150daf | 6680 | eth_addr_nicira_random(ea); |
064af421 BP |
6681 | return eth_addr_to_uint64(ea); |
6682 | } | |
6683 | \f | |
254750ce BP |
6684 | /* Table overflow policy. */ |
6685 | ||
ad3efdcb EJ |
6686 | /* Chooses and updates 'rulep' with a rule to evict from 'table'. Sets 'rulep' |
6687 | * to NULL if the table is not configured to evict rules or if the table | |
6688 | * contains no evictable rules. (Rules with a readlock on their evict rwlock, | |
6689 | * or with no timeouts are not evictable.) */ | |
6690 | static bool | |
6691 | choose_rule_to_evict(struct oftable *table, struct rule **rulep) | |
15aaf599 | 6692 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6693 | { |
6694 | struct eviction_group *evg; | |
6695 | ||
ad3efdcb | 6696 | *rulep = NULL; |
254750ce | 6697 | if (!table->eviction_fields) { |
ad3efdcb | 6698 | return false; |
254750ce BP |
6699 | } |
6700 | ||
6701 | /* In the common case, the outer and inner loops here will each be entered | |
6702 | * exactly once: | |
6703 | * | |
6704 | * - The inner loop normally "return"s in its first iteration. If the | |
6705 | * eviction group has any evictable rules, then it always returns in | |
6706 | * some iteration. | |
6707 | * | |
6708 | * - The outer loop only iterates more than once if the largest eviction | |
6709 | * group has no evictable rules. | |
6710 | * | |
6711 | * - The outer loop can exit only if table's 'max_flows' is all filled up | |
afe2143d | 6712 | * by unevictable rules. */ |
254750ce BP |
6713 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { |
6714 | struct rule *rule; | |
6715 | ||
6716 | HEAP_FOR_EACH (rule, evg_node, &evg->rules) { | |
15aaf599 BP |
6717 | *rulep = rule; |
6718 | return true; | |
254750ce BP |
6719 | } |
6720 | } | |
6721 | ||
ad3efdcb | 6722 | return false; |
254750ce | 6723 | } |
254750ce BP |
6724 | \f |
6725 | /* Eviction groups. */ | |
6726 | ||
6727 | /* Returns the priority to use for an eviction_group that contains 'n_rules' | |
6728 | * rules. The priority contains low-order random bits to ensure that eviction | |
6729 | * groups with the same number of rules are prioritized randomly. */ | |
6730 | static uint32_t | |
6731 | eviction_group_priority(size_t n_rules) | |
6732 | { | |
6733 | uint16_t size = MIN(UINT16_MAX, n_rules); | |
6734 | return (size << 16) | random_uint16(); | |
6735 | } | |
6736 | ||
6737 | /* Updates 'evg', an eviction_group within 'table', following a change that | |
6738 | * adds or removes rules in 'evg'. */ | |
6739 | static void | |
6740 | eviction_group_resized(struct oftable *table, struct eviction_group *evg) | |
15aaf599 | 6741 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6742 | { |
6743 | heap_change(&table->eviction_groups_by_size, &evg->size_node, | |
6744 | eviction_group_priority(heap_count(&evg->rules))); | |
6745 | } | |
6746 | ||
6747 | /* Destroys 'evg', an eviction_group within 'table': | |
6748 | * | |
6749 | * - Removes all the rules, if any, from 'evg'. (It doesn't destroy the | |
6750 | * rules themselves, just removes them from the eviction group.) | |
6751 | * | |
6752 | * - Removes 'evg' from 'table'. | |
6753 | * | |
6754 | * - Frees 'evg'. */ | |
6755 | static void | |
6756 | eviction_group_destroy(struct oftable *table, struct eviction_group *evg) | |
15aaf599 | 6757 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6758 | { |
6759 | while (!heap_is_empty(&evg->rules)) { | |
6760 | struct rule *rule; | |
6761 | ||
6762 | rule = CONTAINER_OF(heap_pop(&evg->rules), struct rule, evg_node); | |
6763 | rule->eviction_group = NULL; | |
6764 | } | |
6765 | hmap_remove(&table->eviction_groups_by_id, &evg->id_node); | |
6766 | heap_remove(&table->eviction_groups_by_size, &evg->size_node); | |
6767 | heap_destroy(&evg->rules); | |
6768 | free(evg); | |
6769 | } | |
6770 | ||
6771 | /* Removes 'rule' from its eviction group, if any. */ | |
6772 | static void | |
6773 | eviction_group_remove_rule(struct rule *rule) | |
15aaf599 | 6774 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6775 | { |
6776 | if (rule->eviction_group) { | |
6777 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
6778 | struct eviction_group *evg = rule->eviction_group; | |
6779 | ||
6780 | rule->eviction_group = NULL; | |
6781 | heap_remove(&evg->rules, &rule->evg_node); | |
6782 | if (heap_is_empty(&evg->rules)) { | |
6783 | eviction_group_destroy(table, evg); | |
6784 | } else { | |
6785 | eviction_group_resized(table, evg); | |
6786 | } | |
6787 | } | |
6788 | } | |
6789 | ||
6790 | /* Hashes the 'rule''s values for the eviction_fields of 'rule''s table, and | |
6791 | * returns the hash value. */ | |
6792 | static uint32_t | |
6793 | eviction_group_hash_rule(struct rule *rule) | |
15aaf599 | 6794 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6795 | { |
6796 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
6797 | const struct mf_subfield *sf; | |
5cb7a798 | 6798 | struct flow flow; |
254750ce BP |
6799 | uint32_t hash; |
6800 | ||
6801 | hash = table->eviction_group_id_basis; | |
5cb7a798 | 6802 | miniflow_expand(&rule->cr.match.flow, &flow); |
254750ce BP |
6803 | for (sf = table->eviction_fields; |
6804 | sf < &table->eviction_fields[table->n_eviction_fields]; | |
6805 | sf++) | |
6806 | { | |
5cb7a798 | 6807 | if (mf_are_prereqs_ok(sf->field, &flow)) { |
254750ce BP |
6808 | union mf_value value; |
6809 | ||
5cb7a798 | 6810 | mf_get_value(sf->field, &flow, &value); |
254750ce BP |
6811 | if (sf->ofs) { |
6812 | bitwise_zero(&value, sf->field->n_bytes, 0, sf->ofs); | |
6813 | } | |
6814 | if (sf->ofs + sf->n_bits < sf->field->n_bytes * 8) { | |
6815 | unsigned int start = sf->ofs + sf->n_bits; | |
6816 | bitwise_zero(&value, sf->field->n_bytes, start, | |
6817 | sf->field->n_bytes * 8 - start); | |
6818 | } | |
6819 | hash = hash_bytes(&value, sf->field->n_bytes, hash); | |
6820 | } else { | |
6821 | hash = hash_int(hash, 0); | |
6822 | } | |
6823 | } | |
6824 | ||
6825 | return hash; | |
6826 | } | |
6827 | ||
6828 | /* Returns an eviction group within 'table' with the given 'id', creating one | |
6829 | * if necessary. */ | |
6830 | static struct eviction_group * | |
6831 | eviction_group_find(struct oftable *table, uint32_t id) | |
15aaf599 | 6832 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6833 | { |
6834 | struct eviction_group *evg; | |
6835 | ||
6836 | HMAP_FOR_EACH_WITH_HASH (evg, id_node, id, &table->eviction_groups_by_id) { | |
6837 | return evg; | |
6838 | } | |
6839 | ||
6840 | evg = xmalloc(sizeof *evg); | |
6841 | hmap_insert(&table->eviction_groups_by_id, &evg->id_node, id); | |
6842 | heap_insert(&table->eviction_groups_by_size, &evg->size_node, | |
6843 | eviction_group_priority(0)); | |
6844 | heap_init(&evg->rules); | |
6845 | ||
6846 | return evg; | |
6847 | } | |
6848 | ||
6849 | /* Returns an eviction priority for 'rule'. The return value should be | |
6850 | * interpreted so that higher priorities make a rule more attractive candidates | |
dc437090 JR |
6851 | * for eviction. |
6852 | * Called only if have a timeout. */ | |
254750ce | 6853 | static uint32_t |
dc437090 | 6854 | rule_eviction_priority(struct ofproto *ofproto, struct rule *rule) |
15aaf599 | 6855 | OVS_REQUIRES(ofproto_mutex) |
254750ce | 6856 | { |
dc437090 JR |
6857 | long long int expiration = LLONG_MAX; |
6858 | long long int modified; | |
254750ce BP |
6859 | uint32_t expiration_offset; |
6860 | ||
dc437090 | 6861 | /* 'modified' needs protection even when we hold 'ofproto_mutex'. */ |
d10976b7 | 6862 | ovs_mutex_lock(&rule->mutex); |
dc437090 | 6863 | modified = rule->modified; |
d10976b7 | 6864 | ovs_mutex_unlock(&rule->mutex); |
dc437090 JR |
6865 | |
6866 | if (rule->hard_timeout) { | |
6867 | expiration = modified + rule->hard_timeout * 1000; | |
6868 | } | |
6869 | if (rule->idle_timeout) { | |
6870 | uint64_t packets, bytes; | |
6871 | long long int used; | |
6872 | long long int idle_expiration; | |
6873 | ||
6874 | ofproto->ofproto_class->rule_get_stats(rule, &packets, &bytes, &used); | |
6875 | idle_expiration = used + rule->idle_timeout * 1000; | |
6876 | expiration = MIN(expiration, idle_expiration); | |
6877 | } | |
6878 | ||
254750ce BP |
6879 | if (expiration == LLONG_MAX) { |
6880 | return 0; | |
6881 | } | |
6882 | ||
6883 | /* Calculate the time of expiration as a number of (approximate) seconds | |
6884 | * after program startup. | |
6885 | * | |
6886 | * This should work OK for program runs that last UINT32_MAX seconds or | |
6887 | * less. Therefore, please restart OVS at least once every 136 years. */ | |
6888 | expiration_offset = (expiration >> 10) - (time_boot_msec() >> 10); | |
6889 | ||
6890 | /* Invert the expiration offset because we're using a max-heap. */ | |
6891 | return UINT32_MAX - expiration_offset; | |
6892 | } | |
6893 | ||
6894 | /* Adds 'rule' to an appropriate eviction group for its oftable's | |
6895 | * configuration. Does nothing if 'rule''s oftable doesn't have eviction | |
6896 | * enabled, or if 'rule' is a permanent rule (one that will never expire on its | |
6897 | * own). | |
6898 | * | |
6899 | * The caller must ensure that 'rule' is not already in an eviction group. */ | |
6900 | static void | |
6901 | eviction_group_add_rule(struct rule *rule) | |
15aaf599 | 6902 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6903 | { |
6904 | struct ofproto *ofproto = rule->ofproto; | |
6905 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
a3779dbc | 6906 | bool has_timeout; |
254750ce | 6907 | |
dc437090 JR |
6908 | /* Timeouts may be modified only when holding 'ofproto_mutex'. We have it |
6909 | * so no additional protection is needed. */ | |
a3779dbc | 6910 | has_timeout = rule->hard_timeout || rule->idle_timeout; |
a3779dbc EJ |
6911 | |
6912 | if (table->eviction_fields && has_timeout) { | |
254750ce BP |
6913 | struct eviction_group *evg; |
6914 | ||
6915 | evg = eviction_group_find(table, eviction_group_hash_rule(rule)); | |
6916 | ||
6917 | rule->eviction_group = evg; | |
6918 | heap_insert(&evg->rules, &rule->evg_node, | |
dc437090 | 6919 | rule_eviction_priority(ofproto, rule)); |
254750ce BP |
6920 | eviction_group_resized(table, evg); |
6921 | } | |
6922 | } | |
6923 | \f | |
d0918789 BP |
6924 | /* oftables. */ |
6925 | ||
6926 | /* Initializes 'table'. */ | |
6927 | static void | |
6928 | oftable_init(struct oftable *table) | |
6929 | { | |
5c67e4af | 6930 | memset(table, 0, sizeof *table); |
d70e8c28 | 6931 | classifier_init(&table->cls, flow_segment_u64s); |
ec1c5c7e | 6932 | table->max_flows = UINT_MAX; |
3c1bb396 | 6933 | atomic_init(&table->miss_config, OFPUTIL_TABLE_MISS_DEFAULT); |
f017d986 | 6934 | |
f017d986 JR |
6935 | classifier_set_prefix_fields(&table->cls, default_prefix_fields, |
6936 | ARRAY_SIZE(default_prefix_fields)); | |
d611866c SH |
6937 | |
6938 | atomic_init(&table->n_matched, 0); | |
6939 | atomic_init(&table->n_missed, 0); | |
d0918789 BP |
6940 | } |
6941 | ||
254750ce | 6942 | /* Destroys 'table', including its classifier and eviction groups. |
d0918789 BP |
6943 | * |
6944 | * The caller is responsible for freeing 'table' itself. */ | |
6945 | static void | |
6946 | oftable_destroy(struct oftable *table) | |
6947 | { | |
cb22974d | 6948 | ovs_assert(classifier_is_empty(&table->cls)); |
254750ce | 6949 | oftable_disable_eviction(table); |
d0918789 | 6950 | classifier_destroy(&table->cls); |
254750ce BP |
6951 | free(table->name); |
6952 | } | |
6953 | ||
6954 | /* Changes the name of 'table' to 'name'. If 'name' is NULL or the empty | |
6955 | * string, then 'table' will use its default name. | |
6956 | * | |
6957 | * This only affects the name exposed for a table exposed through the OpenFlow | |
6958 | * OFPST_TABLE (as printed by "ovs-ofctl dump-tables"). */ | |
6959 | static void | |
6960 | oftable_set_name(struct oftable *table, const char *name) | |
6961 | { | |
6962 | if (name && name[0]) { | |
6963 | int len = strnlen(name, OFP_MAX_TABLE_NAME_LEN); | |
6964 | if (!table->name || strncmp(name, table->name, len)) { | |
6965 | free(table->name); | |
6966 | table->name = xmemdup0(name, len); | |
6967 | } | |
6968 | } else { | |
6969 | free(table->name); | |
6970 | table->name = NULL; | |
6971 | } | |
6972 | } | |
6973 | ||
6974 | /* oftables support a choice of two policies when adding a rule would cause the | |
6975 | * number of flows in the table to exceed the configured maximum number: either | |
6976 | * they can refuse to add the new flow or they can evict some existing flow. | |
6977 | * This function configures the former policy on 'table'. */ | |
6978 | static void | |
6979 | oftable_disable_eviction(struct oftable *table) | |
15aaf599 | 6980 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6981 | { |
6982 | if (table->eviction_fields) { | |
6983 | struct eviction_group *evg, *next; | |
6984 | ||
6985 | HMAP_FOR_EACH_SAFE (evg, next, id_node, | |
6986 | &table->eviction_groups_by_id) { | |
6987 | eviction_group_destroy(table, evg); | |
6988 | } | |
6989 | hmap_destroy(&table->eviction_groups_by_id); | |
6990 | heap_destroy(&table->eviction_groups_by_size); | |
6991 | ||
6992 | free(table->eviction_fields); | |
6993 | table->eviction_fields = NULL; | |
6994 | table->n_eviction_fields = 0; | |
6995 | } | |
6996 | } | |
6997 | ||
6998 | /* oftables support a choice of two policies when adding a rule would cause the | |
6999 | * number of flows in the table to exceed the configured maximum number: either | |
7000 | * they can refuse to add the new flow or they can evict some existing flow. | |
7001 | * This function configures the latter policy on 'table', with fairness based | |
7002 | * on the values of the 'n_fields' fields specified in 'fields'. (Specifying | |
7003 | * 'n_fields' as 0 disables fairness.) */ | |
7004 | static void | |
7005 | oftable_enable_eviction(struct oftable *table, | |
7006 | const struct mf_subfield *fields, size_t n_fields) | |
15aaf599 | 7007 | OVS_REQUIRES(ofproto_mutex) |
254750ce | 7008 | { |
254750ce BP |
7009 | struct rule *rule; |
7010 | ||
7011 | if (table->eviction_fields | |
7012 | && n_fields == table->n_eviction_fields | |
7013 | && (!n_fields | |
7014 | || !memcmp(fields, table->eviction_fields, | |
7015 | n_fields * sizeof *fields))) { | |
7016 | /* No change. */ | |
7017 | return; | |
7018 | } | |
7019 | ||
7020 | oftable_disable_eviction(table); | |
7021 | ||
7022 | table->n_eviction_fields = n_fields; | |
7023 | table->eviction_fields = xmemdup(fields, n_fields * sizeof *fields); | |
7024 | ||
7025 | table->eviction_group_id_basis = random_uint32(); | |
7026 | hmap_init(&table->eviction_groups_by_id); | |
7027 | heap_init(&table->eviction_groups_by_size); | |
7028 | ||
5f0476ce | 7029 | CLS_FOR_EACH (rule, cr, &table->cls) { |
254750ce BP |
7030 | eviction_group_add_rule(rule); |
7031 | } | |
d0918789 BP |
7032 | } |
7033 | ||
bc5e6a91 JR |
7034 | /* Inserts 'rule' from the ofproto data structures BEFORE caller has inserted |
7035 | * it to the classifier. */ | |
7036 | static void | |
7037 | ofproto_rule_insert__(struct ofproto *ofproto, struct rule *rule) | |
7038 | OVS_REQUIRES(ofproto_mutex) | |
7039 | { | |
7040 | const struct rule_actions *actions = rule_get_actions(rule); | |
7041 | ||
7042 | if (rule->hard_timeout || rule->idle_timeout) { | |
7043 | list_insert(&ofproto->expirable, &rule->expirable); | |
7044 | } | |
7045 | cookies_insert(ofproto, rule); | |
7046 | eviction_group_add_rule(rule); | |
7047 | if (actions->has_meter) { | |
7048 | meter_insert_rule(rule); | |
7049 | } | |
7050 | } | |
7051 | ||
802f84ff JR |
7052 | /* Removes 'rule' from the ofproto data structures AFTER caller has removed |
7053 | * it from the classifier. */ | |
d0918789 | 7054 | static void |
802f84ff | 7055 | ofproto_rule_remove__(struct ofproto *ofproto, struct rule *rule) |
15aaf599 | 7056 | OVS_REQUIRES(ofproto_mutex) |
d0918789 | 7057 | { |
98eaac36 | 7058 | cookies_remove(ofproto, rule); |
2c916028 | 7059 | |
254750ce | 7060 | eviction_group_remove_rule(rule); |
e503cc19 SH |
7061 | if (!list_is_empty(&rule->expirable)) { |
7062 | list_remove(&rule->expirable); | |
7063 | } | |
9cae45dc JR |
7064 | if (!list_is_empty(&rule->meter_list_node)) { |
7065 | list_remove(&rule->meter_list_node); | |
51b50dfd | 7066 | list_init(&rule->meter_list_node); |
9cae45dc | 7067 | } |
d0918789 BP |
7068 | } |
7069 | ||
0b4f2078 EJ |
7070 | static void |
7071 | oftable_remove_rule(struct rule *rule) | |
15aaf599 | 7072 | OVS_REQUIRES(ofproto_mutex) |
0b4f2078 | 7073 | { |
802f84ff JR |
7074 | struct classifier *cls = &rule->ofproto->tables[rule->table_id].cls; |
7075 | ||
7076 | if (classifier_remove(cls, &rule->cr)) { | |
7077 | ofproto_rule_remove__(rule->ofproto, rule); | |
7078 | } | |
0b4f2078 | 7079 | } |
d0918789 | 7080 | \f |
abe529af | 7081 | /* unixctl commands. */ |
7aa697dd | 7082 | |
abe529af | 7083 | struct ofproto * |
2ac6bedd | 7084 | ofproto_lookup(const char *name) |
7aa697dd | 7085 | { |
2ac6bedd | 7086 | struct ofproto *ofproto; |
7aa697dd | 7087 | |
2ac6bedd BP |
7088 | HMAP_FOR_EACH_WITH_HASH (ofproto, hmap_node, hash_string(name, 0), |
7089 | &all_ofprotos) { | |
7090 | if (!strcmp(ofproto->name, name)) { | |
7091 | return ofproto; | |
7092 | } | |
7aa697dd | 7093 | } |
2ac6bedd | 7094 | return NULL; |
7aa697dd BP |
7095 | } |
7096 | ||
7097 | static void | |
0e15264f BP |
7098 | ofproto_unixctl_list(struct unixctl_conn *conn, int argc OVS_UNUSED, |
7099 | const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED) | |
7aa697dd | 7100 | { |
7aa697dd | 7101 | struct ofproto *ofproto; |
7aa697dd | 7102 | struct ds results; |
7aa697dd | 7103 | |
7aa697dd | 7104 | ds_init(&results); |
2ac6bedd BP |
7105 | HMAP_FOR_EACH (ofproto, hmap_node, &all_ofprotos) { |
7106 | ds_put_format(&results, "%s\n", ofproto->name); | |
7aa697dd | 7107 | } |
bde9f75d | 7108 | unixctl_command_reply(conn, ds_cstr(&results)); |
7aa697dd | 7109 | ds_destroy(&results); |
7aa697dd BP |
7110 | } |
7111 | ||
7112 | static void | |
7113 | ofproto_unixctl_init(void) | |
7114 | { | |
7115 | static bool registered; | |
7116 | if (registered) { | |
7117 | return; | |
7118 | } | |
7119 | registered = true; | |
7120 | ||
0e15264f BP |
7121 | unixctl_command_register("ofproto/list", "", 0, 0, |
7122 | ofproto_unixctl_list, NULL); | |
064af421 | 7123 | } |
52a90c29 BP |
7124 | \f |
7125 | /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.) | |
7126 | * | |
7127 | * This is deprecated. It is only for compatibility with broken device drivers | |
7128 | * in old versions of Linux that do not properly support VLANs when VLAN | |
7129 | * devices are not used. When broken device drivers are no longer in | |
7130 | * widespread use, we will delete these interfaces. */ | |
7131 | ||
7132 | /* Sets a 1-bit in the 4096-bit 'vlan_bitmap' for each VLAN ID that is matched | |
7133 | * (exactly) by an OpenFlow rule in 'ofproto'. */ | |
7134 | void | |
7135 | ofproto_get_vlan_usage(struct ofproto *ofproto, unsigned long int *vlan_bitmap) | |
7136 | { | |
ac4aa4c8 JR |
7137 | struct match match; |
7138 | struct cls_rule target; | |
d0918789 | 7139 | const struct oftable *oftable; |
52a90c29 | 7140 | |
ac4aa4c8 JR |
7141 | match_init_catchall(&match); |
7142 | match_set_vlan_vid_masked(&match, htons(VLAN_CFI), htons(VLAN_CFI)); | |
7143 | cls_rule_init(&target, &match, 0); | |
7144 | ||
52a90c29 BP |
7145 | free(ofproto->vlan_bitmap); |
7146 | ofproto->vlan_bitmap = bitmap_allocate(4096); | |
7147 | ofproto->vlans_changed = false; | |
7148 | ||
d0918789 | 7149 | OFPROTO_FOR_EACH_TABLE (oftable, ofproto) { |
ac4aa4c8 | 7150 | struct rule *rule; |
52a90c29 | 7151 | |
5f0476ce | 7152 | CLS_FOR_EACH_TARGET (rule, cr, &oftable->cls, &target) { |
ac4aa4c8 JR |
7153 | if (minimask_get_vid_mask(&rule->cr.match.mask) == VLAN_VID_MASK) { |
7154 | uint16_t vid = miniflow_get_vid(&rule->cr.match.flow); | |
7155 | ||
7156 | bitmap_set1(vlan_bitmap, vid); | |
7157 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
52a90c29 BP |
7158 | } |
7159 | } | |
7160 | } | |
059ef3c6 EJ |
7161 | |
7162 | cls_rule_destroy(&target); | |
52a90c29 BP |
7163 | } |
7164 | ||
7165 | /* Returns true if new VLANs have come into use by the flow table since the | |
7166 | * last call to ofproto_get_vlan_usage(). | |
7167 | * | |
7168 | * We don't track when old VLANs stop being used. */ | |
7169 | bool | |
7170 | ofproto_has_vlan_usage_changed(const struct ofproto *ofproto) | |
7171 | { | |
7172 | return ofproto->vlans_changed; | |
7173 | } | |
7174 | ||
7175 | /* Configures a VLAN splinter binding between the ports identified by OpenFlow | |
7176 | * port numbers 'vlandev_ofp_port' and 'realdev_ofp_port'. If | |
7177 | * 'realdev_ofp_port' is nonzero, then the VLAN device is enslaved to the real | |
7178 | * device as a VLAN splinter for VLAN ID 'vid'. If 'realdev_ofp_port' is zero, | |
7179 | * then the VLAN device is un-enslaved. */ | |
7180 | int | |
4e022ec0 AW |
7181 | ofproto_port_set_realdev(struct ofproto *ofproto, ofp_port_t vlandev_ofp_port, |
7182 | ofp_port_t realdev_ofp_port, int vid) | |
52a90c29 BP |
7183 | { |
7184 | struct ofport *ofport; | |
7185 | int error; | |
7186 | ||
cb22974d | 7187 | ovs_assert(vlandev_ofp_port != realdev_ofp_port); |
52a90c29 BP |
7188 | |
7189 | ofport = ofproto_get_port(ofproto, vlandev_ofp_port); | |
7190 | if (!ofport) { | |
7191 | VLOG_WARN("%s: cannot set realdev on nonexistent port %"PRIu16, | |
7192 | ofproto->name, vlandev_ofp_port); | |
7193 | return EINVAL; | |
7194 | } | |
7195 | ||
7196 | if (!ofproto->ofproto_class->set_realdev) { | |
7197 | if (!vlandev_ofp_port) { | |
7198 | return 0; | |
7199 | } | |
7200 | VLOG_WARN("%s: vlan splinters not supported", ofproto->name); | |
7201 | return EOPNOTSUPP; | |
7202 | } | |
7203 | ||
7204 | error = ofproto->ofproto_class->set_realdev(ofport, realdev_ofp_port, vid); | |
7205 | if (error) { | |
7206 | VLOG_WARN("%s: setting realdev on port %"PRIu16" (%s) failed (%s)", | |
7207 | ofproto->name, vlandev_ofp_port, | |
10a89ef0 | 7208 | netdev_get_name(ofport->netdev), ovs_strerror(error)); |
52a90c29 BP |
7209 | } |
7210 | return error; | |
7211 | } |