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064af421 | 1 | /* |
cb22974d | 2 | * Copyright (c) 2009, 2010, 2011, 2012, 2013 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" |
19a87e36 | 28 | #include "connmgr.h" |
064af421 | 29 | #include "coverage.h" |
4f2cad2c | 30 | #include "dynamic-string.h" |
ca0f572c BP |
31 | #include "hash.h" |
32 | #include "hmap.h" | |
254750ce | 33 | #include "meta-flow.h" |
064af421 | 34 | #include "netdev.h" |
09246b99 | 35 | #include "nx-match.h" |
f25d0cf3 | 36 | #include "ofp-actions.h" |
90bf1e07 | 37 | #include "ofp-errors.h" |
982697a4 | 38 | #include "ofp-msgs.h" |
064af421 | 39 | #include "ofp-print.h" |
fa37b408 | 40 | #include "ofp-util.h" |
064af421 | 41 | #include "ofpbuf.h" |
5bee6e26 | 42 | #include "ofproto-provider.h" |
064af421 BP |
43 | #include "openflow/nicira-ext.h" |
44 | #include "openflow/openflow.h" | |
064af421 BP |
45 | #include "packets.h" |
46 | #include "pinsched.h" | |
47 | #include "pktbuf.h" | |
48 | #include "poll-loop.h" | |
254750ce | 49 | #include "random.h" |
064af421 | 50 | #include "shash.h" |
0d085684 | 51 | #include "simap.h" |
b3c01ed3 | 52 | #include "sset.h" |
064af421 | 53 | #include "timeval.h" |
c4617b3c | 54 | #include "unaligned.h" |
4f2cad2c | 55 | #include "unixctl.h" |
5136ce49 | 56 | #include "vlog.h" |
064af421 | 57 | |
d98e6007 | 58 | VLOG_DEFINE_THIS_MODULE(ofproto); |
064af421 | 59 | |
d76f09ea | 60 | COVERAGE_DEFINE(ofproto_error); |
d76f09ea | 61 | COVERAGE_DEFINE(ofproto_flush); |
d76f09ea | 62 | COVERAGE_DEFINE(ofproto_no_packet_in); |
d76f09ea BP |
63 | COVERAGE_DEFINE(ofproto_packet_out); |
64 | COVERAGE_DEFINE(ofproto_queue_req); | |
65 | COVERAGE_DEFINE(ofproto_recv_openflow); | |
66 | COVERAGE_DEFINE(ofproto_reinit_ports); | |
d76f09ea BP |
67 | COVERAGE_DEFINE(ofproto_uninstallable); |
68 | COVERAGE_DEFINE(ofproto_update_port); | |
69 | ||
7ee20df1 BP |
70 | enum ofproto_state { |
71 | S_OPENFLOW, /* Processing OpenFlow commands. */ | |
254750ce | 72 | S_EVICT, /* Evicting flows from over-limit tables. */ |
7ee20df1 BP |
73 | S_FLUSH, /* Deleting all flow table rules. */ |
74 | }; | |
75 | ||
76 | enum ofoperation_type { | |
77 | OFOPERATION_ADD, | |
78 | OFOPERATION_DELETE, | |
79 | OFOPERATION_MODIFY | |
80 | }; | |
81 | ||
82 | /* A single OpenFlow request can execute any number of operations. The | |
83 | * ofopgroup maintain OpenFlow state common to all of the operations, e.g. the | |
84 | * ofconn to which an error reply should be sent if necessary. | |
85 | * | |
86 | * ofproto initiates some operations internally. These operations are still | |
87 | * assigned to groups but will not have an associated ofconn. */ | |
88 | struct ofopgroup { | |
89 | struct ofproto *ofproto; /* Owning ofproto. */ | |
90 | struct list ofproto_node; /* In ofproto's "pending" list. */ | |
91 | struct list ops; /* List of "struct ofoperation"s. */ | |
e615b0a3 | 92 | int n_running; /* Number of ops still pending. */ |
7ee20df1 BP |
93 | |
94 | /* Data needed to send OpenFlow reply on failure or to send a buffered | |
95 | * packet on success. | |
96 | * | |
97 | * If list_is_empty(ofconn_node) then this ofopgroup never had an | |
98 | * associated ofconn or its ofconn's connection dropped after it initiated | |
99 | * the operation. In the latter case 'ofconn' is a wild pointer that | |
100 | * refers to freed memory, so the 'ofconn' member must be used only if | |
101 | * !list_is_empty(ofconn_node). | |
102 | */ | |
103 | struct list ofconn_node; /* In ofconn's list of pending opgroups. */ | |
104 | struct ofconn *ofconn; /* ofconn for reply (but see note above). */ | |
105 | struct ofp_header *request; /* Original request (truncated at 64 bytes). */ | |
106 | uint32_t buffer_id; /* Buffer id from original request. */ | |
7ee20df1 BP |
107 | }; |
108 | ||
7024dffe BP |
109 | static struct ofopgroup *ofopgroup_create_unattached(struct ofproto *); |
110 | static struct ofopgroup *ofopgroup_create(struct ofproto *, struct ofconn *, | |
111 | const struct ofp_header *, | |
112 | uint32_t buffer_id); | |
7ee20df1 | 113 | static void ofopgroup_submit(struct ofopgroup *); |
e615b0a3 | 114 | static void ofopgroup_complete(struct ofopgroup *); |
7ee20df1 BP |
115 | |
116 | /* A single flow table operation. */ | |
117 | struct ofoperation { | |
118 | struct ofopgroup *group; /* Owning group. */ | |
119 | struct list group_node; /* In ofopgroup's "ops" list. */ | |
120 | struct hmap_node hmap_node; /* In ofproto's "deletions" hmap. */ | |
121 | struct rule *rule; /* Rule being operated upon. */ | |
122 | enum ofoperation_type type; /* Type of operation. */ | |
08043761 BP |
123 | |
124 | /* OFOPERATION_ADD. */ | |
125 | struct rule *victim; /* Rule being replaced, if any.. */ | |
126 | ||
127 | /* OFOPERATION_MODIFY: The old actions, if the actions are changing. */ | |
128 | struct ofpact *ofpacts; | |
129 | size_t ofpacts_len; | |
9cae45dc | 130 | uint32_t meter_id; |
08043761 | 131 | |
2b07c8b1 BP |
132 | /* OFOPERATION_DELETE. */ |
133 | enum ofp_flow_removed_reason reason; /* Reason flow was removed. */ | |
134 | ||
7ee20df1 | 135 | ovs_be64 flow_cookie; /* Rule's old flow cookie. */ |
e615b0a3 | 136 | enum ofperr error; /* 0 if no error. */ |
7ee20df1 BP |
137 | }; |
138 | ||
a7d94793 BP |
139 | static struct ofoperation *ofoperation_create(struct ofopgroup *, |
140 | struct rule *, | |
2b07c8b1 BP |
141 | enum ofoperation_type, |
142 | enum ofp_flow_removed_reason); | |
7ee20df1 BP |
143 | static void ofoperation_destroy(struct ofoperation *); |
144 | ||
d0918789 BP |
145 | /* oftable. */ |
146 | static void oftable_init(struct oftable *); | |
147 | static void oftable_destroy(struct oftable *); | |
878ae780 | 148 | |
254750ce BP |
149 | static void oftable_set_name(struct oftable *, const char *name); |
150 | ||
151 | static void oftable_disable_eviction(struct oftable *); | |
152 | static void oftable_enable_eviction(struct oftable *, | |
153 | const struct mf_subfield *fields, | |
154 | size_t n_fields); | |
155 | ||
ad3efdcb | 156 | static void oftable_remove_rule(struct rule *rule) OVS_RELEASES(rule->evict); |
0b4f2078 EJ |
157 | static void oftable_remove_rule__(struct ofproto *ofproto, |
158 | struct classifier *cls, struct rule *rule) | |
ad3efdcb | 159 | OVS_REQ_WRLOCK(cls->rwlock) OVS_RELEASES(rule->evict); |
d0918789 BP |
160 | static struct rule *oftable_replace_rule(struct rule *); |
161 | static void oftable_substitute_rule(struct rule *old, struct rule *new); | |
064af421 | 162 | |
254750ce BP |
163 | /* A set of rules within a single OpenFlow table (oftable) that have the same |
164 | * values for the oftable's eviction_fields. A rule to be evicted, when one is | |
165 | * needed, is taken from the eviction group that contains the greatest number | |
166 | * of rules. | |
167 | * | |
168 | * An oftable owns any number of eviction groups, each of which contains any | |
169 | * number of rules. | |
170 | * | |
171 | * Membership in an eviction group is imprecise, based on the hash of the | |
172 | * oftable's eviction_fields (in the eviction_group's id_node.hash member). | |
173 | * That is, if two rules have different eviction_fields, but those | |
174 | * eviction_fields hash to the same value, then they will belong to the same | |
175 | * eviction_group anyway. | |
176 | * | |
177 | * (When eviction is not enabled on an oftable, we don't track any eviction | |
178 | * groups, to save time and space.) */ | |
179 | struct eviction_group { | |
180 | struct hmap_node id_node; /* In oftable's "eviction_groups_by_id". */ | |
181 | struct heap_node size_node; /* In oftable's "eviction_groups_by_size". */ | |
182 | struct heap rules; /* Contains "struct rule"s. */ | |
183 | }; | |
184 | ||
ad3efdcb EJ |
185 | static bool choose_rule_to_evict(struct oftable *table, struct rule **rulep) |
186 | OVS_TRY_WRLOCK(true, (*rulep)->evict); | |
254750ce BP |
187 | static void ofproto_evict(struct ofproto *); |
188 | static uint32_t rule_eviction_priority(struct rule *); | |
f29152ca | 189 | |
d0918789 BP |
190 | /* ofport. */ |
191 | static void ofport_destroy__(struct ofport *); | |
192 | static void ofport_destroy(struct ofport *); | |
193 | ||
194 | static void update_port(struct ofproto *, const char *devname); | |
195 | static int init_ports(struct ofproto *); | |
196 | static void reinit_ports(struct ofproto *); | |
7ee20df1 | 197 | |
254750ce BP |
198 | /* rule. */ |
199 | static void ofproto_rule_destroy__(struct rule *); | |
200 | static void ofproto_rule_send_removed(struct rule *, uint8_t reason); | |
201 | static bool rule_is_modifiable(const struct rule *); | |
254750ce | 202 | |
d0918789 | 203 | /* OpenFlow. */ |
90bf1e07 | 204 | static enum ofperr add_flow(struct ofproto *, struct ofconn *, |
e3b56933 | 205 | struct ofputil_flow_mod *, |
90bf1e07 | 206 | const struct ofp_header *); |
ad3efdcb EJ |
207 | static void delete_flow__(struct rule *rule, struct ofopgroup *, |
208 | enum ofp_flow_removed_reason) | |
209 | OVS_RELEASES(rule->evict); | |
e03248b7 | 210 | static bool handle_openflow(struct ofconn *, const struct ofpbuf *); |
90bf1e07 | 211 | static enum ofperr handle_flow_mod__(struct ofproto *, struct ofconn *, |
e3b56933 | 212 | struct ofputil_flow_mod *, |
d0918789 | 213 | const struct ofp_header *); |
65e0be10 BP |
214 | static void calc_duration(long long int start, long long int now, |
215 | uint32_t *sec, uint32_t *nsec); | |
f29152ca | 216 | |
d0918789 BP |
217 | /* ofproto. */ |
218 | static uint64_t pick_datapath_id(const struct ofproto *); | |
219 | static uint64_t pick_fallback_dpid(void); | |
220 | static void ofproto_destroy__(struct ofproto *); | |
ada3428f | 221 | static void update_mtu(struct ofproto *, struct ofport *); |
6b3f7f02 | 222 | static void meter_delete(struct ofproto *, uint32_t first, uint32_t last); |
f29152ca | 223 | |
d0918789 | 224 | /* unixctl. */ |
abe529af | 225 | static void ofproto_unixctl_init(void); |
f29152ca | 226 | |
abe529af BP |
227 | /* All registered ofproto classes, in probe order. */ |
228 | static const struct ofproto_class **ofproto_classes; | |
229 | static size_t n_ofproto_classes; | |
230 | static size_t allocated_ofproto_classes; | |
7aa697dd | 231 | |
380f49c4 | 232 | unsigned flow_eviction_threshold = OFPROTO_FLOW_EVICTION_THRESHOLD_DEFAULT; |
448a4b2f | 233 | unsigned n_handler_threads; |
7155fa52 | 234 | enum ofproto_flow_miss_model flow_miss_model = OFPROTO_HANDLE_MISS_AUTO; |
380f49c4 | 235 | |
f797957a | 236 | /* Map from datapath name to struct ofproto, for use by unixctl commands. */ |
abe529af | 237 | static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos); |
ebe482fd | 238 | |
e1b1d06a JP |
239 | /* Initial mappings of port to OpenFlow number mappings. */ |
240 | static struct shash init_ofp_ports = SHASH_INITIALIZER(&init_ofp_ports); | |
241 | ||
abe529af | 242 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
f29152ca | 243 | |
40358701 GS |
244 | /* The default value of true waits for flow restore. */ |
245 | static bool flow_restore_wait = true; | |
246 | ||
b0408fca JP |
247 | /* Must be called to initialize the ofproto library. |
248 | * | |
249 | * The caller may pass in 'iface_hints', which contains an shash of | |
250 | * "iface_hint" elements indexed by the interface's name. The provider | |
251 | * may use these hints to describe the startup configuration in order to | |
252 | * reinitialize its state. The caller owns the provided data, so a | |
253 | * provider will make copies of anything required. An ofproto provider | |
254 | * will remove any existing state that is not described by the hint, and | |
255 | * may choose to remove it all. */ | |
256 | void | |
257 | ofproto_init(const struct shash *iface_hints) | |
abe529af | 258 | { |
e1b1d06a | 259 | struct shash_node *node; |
b0408fca | 260 | size_t i; |
f29152ca | 261 | |
b0408fca JP |
262 | ofproto_class_register(&ofproto_dpif_class); |
263 | ||
e1b1d06a JP |
264 | /* Make a local copy, since we don't own 'iface_hints' elements. */ |
265 | SHASH_FOR_EACH(node, iface_hints) { | |
266 | const struct iface_hint *orig_hint = node->data; | |
267 | struct iface_hint *new_hint = xmalloc(sizeof *new_hint); | |
268 | const char *br_type = ofproto_normalize_type(orig_hint->br_type); | |
269 | ||
270 | new_hint->br_name = xstrdup(orig_hint->br_name); | |
271 | new_hint->br_type = xstrdup(br_type); | |
272 | new_hint->ofp_port = orig_hint->ofp_port; | |
273 | ||
274 | shash_add(&init_ofp_ports, node->name, new_hint); | |
275 | } | |
276 | ||
b0408fca | 277 | for (i = 0; i < n_ofproto_classes; i++) { |
e1b1d06a | 278 | ofproto_classes[i]->init(&init_ofp_ports); |
abe529af BP |
279 | } |
280 | } | |
f29152ca | 281 | |
abe529af BP |
282 | /* 'type' should be a normalized datapath type, as returned by |
283 | * ofproto_normalize_type(). Returns the corresponding ofproto_class | |
284 | * structure, or a null pointer if there is none registered for 'type'. */ | |
285 | static const struct ofproto_class * | |
286 | ofproto_class_find__(const char *type) | |
287 | { | |
288 | size_t i; | |
f29152ca | 289 | |
abe529af BP |
290 | for (i = 0; i < n_ofproto_classes; i++) { |
291 | const struct ofproto_class *class = ofproto_classes[i]; | |
292 | struct sset types; | |
293 | bool found; | |
064af421 | 294 | |
abe529af BP |
295 | sset_init(&types); |
296 | class->enumerate_types(&types); | |
297 | found = sset_contains(&types, type); | |
298 | sset_destroy(&types); | |
bcf84111 | 299 | |
abe529af BP |
300 | if (found) { |
301 | return class; | |
302 | } | |
303 | } | |
304 | VLOG_WARN("unknown datapath type %s", type); | |
305 | return NULL; | |
306 | } | |
064af421 | 307 | |
abe529af BP |
308 | /* Registers a new ofproto class. After successful registration, new ofprotos |
309 | * of that type can be created using ofproto_create(). */ | |
310 | int | |
311 | ofproto_class_register(const struct ofproto_class *new_class) | |
312 | { | |
313 | size_t i; | |
7aa697dd | 314 | |
abe529af BP |
315 | for (i = 0; i < n_ofproto_classes; i++) { |
316 | if (ofproto_classes[i] == new_class) { | |
317 | return EEXIST; | |
318 | } | |
319 | } | |
064af421 | 320 | |
abe529af BP |
321 | if (n_ofproto_classes >= allocated_ofproto_classes) { |
322 | ofproto_classes = x2nrealloc(ofproto_classes, | |
323 | &allocated_ofproto_classes, | |
324 | sizeof *ofproto_classes); | |
325 | } | |
326 | ofproto_classes[n_ofproto_classes++] = new_class; | |
327 | return 0; | |
328 | } | |
064af421 | 329 | |
abe529af BP |
330 | /* Unregisters a datapath provider. 'type' must have been previously |
331 | * registered and not currently be in use by any ofprotos. After | |
332 | * unregistration new datapaths of that type cannot be opened using | |
333 | * ofproto_create(). */ | |
334 | int | |
335 | ofproto_class_unregister(const struct ofproto_class *class) | |
336 | { | |
337 | size_t i; | |
76ce9432 | 338 | |
abe529af BP |
339 | for (i = 0; i < n_ofproto_classes; i++) { |
340 | if (ofproto_classes[i] == class) { | |
341 | for (i++; i < n_ofproto_classes; i++) { | |
342 | ofproto_classes[i - 1] = ofproto_classes[i]; | |
343 | } | |
344 | n_ofproto_classes--; | |
345 | return 0; | |
346 | } | |
347 | } | |
348 | VLOG_WARN("attempted to unregister an ofproto class that is not " | |
349 | "registered"); | |
350 | return EAFNOSUPPORT; | |
351 | } | |
4a4cdb3b | 352 | |
f79e673f BP |
353 | /* Clears 'types' and enumerates all registered ofproto types into it. The |
354 | * caller must first initialize the sset. */ | |
355 | void | |
356 | ofproto_enumerate_types(struct sset *types) | |
357 | { | |
abe529af | 358 | size_t i; |
064af421 | 359 | |
abe529af BP |
360 | for (i = 0; i < n_ofproto_classes; i++) { |
361 | ofproto_classes[i]->enumerate_types(types); | |
362 | } | |
f79e673f | 363 | } |
064af421 | 364 | |
f79e673f BP |
365 | /* Returns the fully spelled out name for the given ofproto 'type'. |
366 | * | |
367 | * Normalized type string can be compared with strcmp(). Unnormalized type | |
368 | * string might be the same even if they have different spellings. */ | |
369 | const char * | |
370 | ofproto_normalize_type(const char *type) | |
371 | { | |
abe529af | 372 | return type && type[0] ? type : "system"; |
f79e673f | 373 | } |
064af421 | 374 | |
f79e673f BP |
375 | /* Clears 'names' and enumerates the names of all known created ofprotos with |
376 | * the given 'type'. The caller must first initialize the sset. Returns 0 if | |
377 | * successful, otherwise a positive errno value. | |
378 | * | |
379 | * Some kinds of datapaths might not be practically enumerable. This is not | |
380 | * considered an error. */ | |
381 | int | |
382 | ofproto_enumerate_names(const char *type, struct sset *names) | |
383 | { | |
abe529af BP |
384 | const struct ofproto_class *class = ofproto_class_find__(type); |
385 | return class ? class->enumerate_names(type, names) : EAFNOSUPPORT; | |
386 | } | |
7aa697dd | 387 | |
064af421 | 388 | int |
abe529af | 389 | ofproto_create(const char *datapath_name, const char *datapath_type, |
064af421 BP |
390 | struct ofproto **ofprotop) |
391 | { | |
abe529af BP |
392 | const struct ofproto_class *class; |
393 | struct ofproto *ofproto; | |
064af421 | 394 | int error; |
c2f0373a | 395 | int i; |
064af421 BP |
396 | |
397 | *ofprotop = NULL; | |
398 | ||
7aa697dd BP |
399 | ofproto_unixctl_init(); |
400 | ||
abe529af BP |
401 | datapath_type = ofproto_normalize_type(datapath_type); |
402 | class = ofproto_class_find__(datapath_type); | |
403 | if (!class) { | |
404 | VLOG_WARN("could not create datapath %s of unknown type %s", | |
405 | datapath_name, datapath_type); | |
406 | return EAFNOSUPPORT; | |
064af421 BP |
407 | } |
408 | ||
abe529af BP |
409 | ofproto = class->alloc(); |
410 | if (!ofproto) { | |
411 | VLOG_ERR("failed to allocate datapath %s of type %s", | |
412 | datapath_name, datapath_type); | |
413 | return ENOMEM; | |
414 | } | |
415 | ||
416 | /* Initialize. */ | |
417 | memset(ofproto, 0, sizeof *ofproto); | |
418 | ofproto->ofproto_class = class; | |
419 | ofproto->name = xstrdup(datapath_name); | |
420 | ofproto->type = xstrdup(datapath_type); | |
421 | hmap_insert(&all_ofprotos, &ofproto->hmap_node, | |
422 | hash_string(ofproto->name, 0)); | |
423 | ofproto->datapath_id = 0; | |
8402c74b | 424 | ofproto->forward_bpdu = false; |
abe529af | 425 | ofproto->fallback_dpid = pick_fallback_dpid(); |
061bfea4 BP |
426 | ofproto->mfr_desc = NULL; |
427 | ofproto->hw_desc = NULL; | |
428 | ofproto->sw_desc = NULL; | |
429 | ofproto->serial_desc = NULL; | |
430 | ofproto->dp_desc = NULL; | |
7257b535 | 431 | ofproto->frag_handling = OFPC_FRAG_NORMAL; |
abe529af BP |
432 | hmap_init(&ofproto->ports); |
433 | shash_init(&ofproto->port_by_name); | |
e1b1d06a | 434 | simap_init(&ofproto->ofp_requests); |
91858960 | 435 | ofproto->max_ports = OFPP_MAX; |
6c1491fb BP |
436 | ofproto->tables = NULL; |
437 | ofproto->n_tables = 0; | |
98eaac36 | 438 | hindex_init(&ofproto->cookies); |
e503cc19 | 439 | list_init(&ofproto->expirable); |
834d6caf | 440 | ovs_mutex_init_recursive(&ofproto->expirable_mutex); |
abe529af | 441 | ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name); |
7ee20df1 BP |
442 | ofproto->state = S_OPENFLOW; |
443 | list_init(&ofproto->pending); | |
dd5616b3 | 444 | ofproto->n_pending = 0; |
7ee20df1 | 445 | hmap_init(&ofproto->deletions); |
a5b8d268 BP |
446 | ofproto->n_add = ofproto->n_delete = ofproto->n_modify = 0; |
447 | ofproto->first_op = ofproto->last_op = LLONG_MIN; | |
448 | ofproto->next_op_report = LLONG_MAX; | |
449 | ofproto->op_backoff = LLONG_MIN; | |
52a90c29 BP |
450 | ofproto->vlan_bitmap = NULL; |
451 | ofproto->vlans_changed = false; | |
ada3428f | 452 | ofproto->min_mtu = INT_MAX; |
abe529af | 453 | |
0f5f95a9 | 454 | error = ofproto->ofproto_class->construct(ofproto); |
19a87e36 | 455 | if (error) { |
abe529af | 456 | VLOG_ERR("failed to open datapath %s: %s", |
10a89ef0 | 457 | datapath_name, ovs_strerror(error)); |
abe529af | 458 | ofproto_destroy__(ofproto); |
19a87e36 BP |
459 | return error; |
460 | } | |
073e2a6f | 461 | |
e1b1d06a JP |
462 | /* The "max_ports" member should have been set by ->construct(ofproto). |
463 | * Port 0 is not a valid OpenFlow port, so mark that as unavailable. */ | |
4e022ec0 | 464 | ofproto->ofp_port_ids = bitmap_allocate(ofp_to_u16(ofproto->max_ports)); |
e1b1d06a JP |
465 | bitmap_set1(ofproto->ofp_port_ids, 0); |
466 | ||
c2f0373a | 467 | /* Check that hidden tables, if any, are at the end. */ |
cb22974d | 468 | ovs_assert(ofproto->n_tables); |
c2f0373a BP |
469 | for (i = 0; i + 1 < ofproto->n_tables; i++) { |
470 | enum oftable_flags flags = ofproto->tables[i].flags; | |
471 | enum oftable_flags next_flags = ofproto->tables[i + 1].flags; | |
472 | ||
cb22974d | 473 | ovs_assert(!(flags & OFTABLE_HIDDEN) || next_flags & OFTABLE_HIDDEN); |
c2f0373a | 474 | } |
19a87e36 | 475 | |
abe529af | 476 | ofproto->datapath_id = pick_datapath_id(ofproto); |
abe529af | 477 | init_ports(ofproto); |
7aa697dd | 478 | |
9cae45dc JR |
479 | /* Initialize meters table. */ |
480 | if (ofproto->ofproto_class->meter_get_features) { | |
481 | ofproto->ofproto_class->meter_get_features(ofproto, | |
482 | &ofproto->meter_features); | |
483 | } else { | |
484 | memset(&ofproto->meter_features, 0, sizeof ofproto->meter_features); | |
485 | } | |
486 | ofproto->meters = xzalloc((ofproto->meter_features.max_meters + 1) | |
487 | * sizeof(struct meter *)); | |
488 | ||
abe529af | 489 | *ofprotop = ofproto; |
064af421 BP |
490 | return 0; |
491 | } | |
492 | ||
91858960 BP |
493 | /* Must be called (only) by an ofproto implementation in its constructor |
494 | * function. See the large comment on 'construct' in struct ofproto_class for | |
495 | * details. */ | |
0f5f95a9 BP |
496 | void |
497 | ofproto_init_tables(struct ofproto *ofproto, int n_tables) | |
498 | { | |
499 | struct oftable *table; | |
500 | ||
cb22974d BP |
501 | ovs_assert(!ofproto->n_tables); |
502 | ovs_assert(n_tables >= 1 && n_tables <= 255); | |
0f5f95a9 BP |
503 | |
504 | ofproto->n_tables = n_tables; | |
505 | ofproto->tables = xmalloc(n_tables * sizeof *ofproto->tables); | |
506 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
507 | oftable_init(table); | |
508 | } | |
509 | } | |
510 | ||
91858960 BP |
511 | /* To be optionally called (only) by an ofproto implementation in its |
512 | * constructor function. See the large comment on 'construct' in struct | |
513 | * ofproto_class for details. | |
514 | * | |
515 | * Sets the maximum number of ports to 'max_ports'. The ofproto generic layer | |
516 | * will then ensure that actions passed into the ofproto implementation will | |
517 | * not refer to OpenFlow ports numbered 'max_ports' or higher. If this | |
518 | * function is not called, there will be no such restriction. | |
519 | * | |
520 | * Reserved ports numbered OFPP_MAX and higher are special and not subject to | |
521 | * the 'max_ports' restriction. */ | |
522 | void | |
4e022ec0 | 523 | ofproto_init_max_ports(struct ofproto *ofproto, ofp_port_t max_ports) |
91858960 | 524 | { |
4e022ec0 | 525 | ovs_assert(ofp_to_u16(max_ports) <= ofp_to_u16(OFPP_MAX)); |
91858960 BP |
526 | ofproto->max_ports = max_ports; |
527 | } | |
528 | ||
e825ace2 BP |
529 | uint64_t |
530 | ofproto_get_datapath_id(const struct ofproto *ofproto) | |
531 | { | |
532 | return ofproto->datapath_id; | |
533 | } | |
534 | ||
064af421 BP |
535 | void |
536 | ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id) | |
537 | { | |
538 | uint64_t old_dpid = p->datapath_id; | |
fa60c019 | 539 | p->datapath_id = datapath_id ? datapath_id : pick_datapath_id(p); |
064af421 | 540 | if (p->datapath_id != old_dpid) { |
76ce9432 BP |
541 | /* Force all active connections to reconnect, since there is no way to |
542 | * notify a controller that the datapath ID has changed. */ | |
fa05809b | 543 | ofproto_reconnect_controllers(p); |
064af421 BP |
544 | } |
545 | } | |
546 | ||
76ce9432 BP |
547 | void |
548 | ofproto_set_controllers(struct ofproto *p, | |
549 | const struct ofproto_controller *controllers, | |
1d9ffc17 | 550 | size_t n_controllers, uint32_t allowed_versions) |
76ce9432 | 551 | { |
1d9ffc17 SH |
552 | connmgr_set_controllers(p->connmgr, controllers, n_controllers, |
553 | allowed_versions); | |
064af421 BP |
554 | } |
555 | ||
31681a5d JP |
556 | void |
557 | ofproto_set_fail_mode(struct ofproto *p, enum ofproto_fail_mode fail_mode) | |
558 | { | |
19a87e36 | 559 | connmgr_set_fail_mode(p->connmgr, fail_mode); |
31681a5d JP |
560 | } |
561 | ||
fa05809b BP |
562 | /* Drops the connections between 'ofproto' and all of its controllers, forcing |
563 | * them to reconnect. */ | |
564 | void | |
565 | ofproto_reconnect_controllers(struct ofproto *ofproto) | |
566 | { | |
19a87e36 | 567 | connmgr_reconnect(ofproto->connmgr); |
917e50e1 BP |
568 | } |
569 | ||
570 | /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s | |
571 | * in-band control should guarantee access, in the same way that in-band | |
572 | * control guarantees access to OpenFlow controllers. */ | |
573 | void | |
574 | ofproto_set_extra_in_band_remotes(struct ofproto *ofproto, | |
575 | const struct sockaddr_in *extras, size_t n) | |
576 | { | |
19a87e36 | 577 | connmgr_set_extra_in_band_remotes(ofproto->connmgr, extras, n); |
917e50e1 BP |
578 | } |
579 | ||
b1da6250 BP |
580 | /* Sets the OpenFlow queue used by flows set up by in-band control on |
581 | * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control | |
582 | * flows will use the default queue. */ | |
583 | void | |
584 | ofproto_set_in_band_queue(struct ofproto *ofproto, int queue_id) | |
585 | { | |
19a87e36 | 586 | connmgr_set_in_band_queue(ofproto->connmgr, queue_id); |
b1da6250 BP |
587 | } |
588 | ||
084f5290 SH |
589 | /* Sets the number of flows at which eviction from the kernel flow table |
590 | * will occur. */ | |
591 | void | |
380f49c4 | 592 | ofproto_set_flow_eviction_threshold(unsigned threshold) |
084f5290 | 593 | { |
380f49c4 EJ |
594 | flow_eviction_threshold = MAX(OFPROTO_FLOW_EVICTION_THRESHOLD_MIN, |
595 | threshold); | |
084f5290 SH |
596 | } |
597 | ||
7155fa52 JS |
598 | /* Sets the path for handling flow misses. */ |
599 | void | |
600 | ofproto_set_flow_miss_model(unsigned model) | |
601 | { | |
602 | flow_miss_model = model; | |
603 | } | |
604 | ||
b53055f4 | 605 | /* If forward_bpdu is true, the NORMAL action will forward frames with |
8402c74b SS |
606 | * reserved (e.g. STP) destination Ethernet addresses. if forward_bpdu is false, |
607 | * the NORMAL action will drop these frames. */ | |
608 | void | |
609 | ofproto_set_forward_bpdu(struct ofproto *ofproto, bool forward_bpdu) | |
610 | { | |
611 | bool old_val = ofproto->forward_bpdu; | |
612 | ofproto->forward_bpdu = forward_bpdu; | |
613 | if (old_val != ofproto->forward_bpdu) { | |
614 | if (ofproto->ofproto_class->forward_bpdu_changed) { | |
615 | ofproto->ofproto_class->forward_bpdu_changed(ofproto); | |
616 | } | |
b53055f4 | 617 | } |
8402c74b SS |
618 | } |
619 | ||
e764773c | 620 | /* Sets the MAC aging timeout for the OFPP_NORMAL action on 'ofproto' to |
c4069512 BP |
621 | * 'idle_time', in seconds, and the maximum number of MAC table entries to |
622 | * 'max_entries'. */ | |
e764773c | 623 | void |
c4069512 BP |
624 | ofproto_set_mac_table_config(struct ofproto *ofproto, unsigned idle_time, |
625 | size_t max_entries) | |
e764773c | 626 | { |
c4069512 BP |
627 | if (ofproto->ofproto_class->set_mac_table_config) { |
628 | ofproto->ofproto_class->set_mac_table_config(ofproto, idle_time, | |
629 | max_entries); | |
e764773c BP |
630 | } |
631 | } | |
632 | ||
448a4b2f AW |
633 | /* Sets number of upcall handler threads. The default is |
634 | * (number of online cores - 1). */ | |
635 | void | |
636 | ofproto_set_n_handler_threads(unsigned limit) | |
637 | { | |
638 | if (limit) { | |
639 | n_handler_threads = limit; | |
640 | } else { | |
641 | n_handler_threads = MAX(1, sysconf(_SC_NPROCESSORS_ONLN) - 1); | |
642 | } | |
643 | } | |
644 | ||
8b6ff729 BP |
645 | void |
646 | ofproto_set_dp_desc(struct ofproto *p, const char *dp_desc) | |
647 | { | |
648 | free(p->dp_desc); | |
649 | p->dp_desc = dp_desc ? xstrdup(dp_desc) : NULL; | |
650 | } | |
651 | ||
064af421 | 652 | int |
81e2083f | 653 | ofproto_set_snoops(struct ofproto *ofproto, const struct sset *snoops) |
064af421 | 654 | { |
19a87e36 | 655 | return connmgr_set_snoops(ofproto->connmgr, snoops); |
064af421 BP |
656 | } |
657 | ||
658 | int | |
0193b2af JG |
659 | ofproto_set_netflow(struct ofproto *ofproto, |
660 | const struct netflow_options *nf_options) | |
064af421 | 661 | { |
abe529af BP |
662 | if (nf_options && sset_is_empty(&nf_options->collectors)) { |
663 | nf_options = NULL; | |
664 | } | |
665 | ||
666 | if (ofproto->ofproto_class->set_netflow) { | |
667 | return ofproto->ofproto_class->set_netflow(ofproto, nf_options); | |
064af421 | 668 | } else { |
abe529af | 669 | return nf_options ? EOPNOTSUPP : 0; |
064af421 BP |
670 | } |
671 | } | |
672 | ||
abe529af | 673 | int |
72b06300 BP |
674 | ofproto_set_sflow(struct ofproto *ofproto, |
675 | const struct ofproto_sflow_options *oso) | |
676 | { | |
abe529af BP |
677 | if (oso && sset_is_empty(&oso->targets)) { |
678 | oso = NULL; | |
679 | } | |
72b06300 | 680 | |
abe529af BP |
681 | if (ofproto->ofproto_class->set_sflow) { |
682 | return ofproto->ofproto_class->set_sflow(ofproto, oso); | |
72b06300 | 683 | } else { |
abe529af | 684 | return oso ? EOPNOTSUPP : 0; |
72b06300 BP |
685 | } |
686 | } | |
29089a54 RL |
687 | |
688 | int | |
689 | ofproto_set_ipfix(struct ofproto *ofproto, | |
690 | const struct ofproto_ipfix_bridge_exporter_options *bo, | |
691 | const struct ofproto_ipfix_flow_exporter_options *fo, | |
692 | size_t n_fo) | |
693 | { | |
694 | if (ofproto->ofproto_class->set_ipfix) { | |
695 | return ofproto->ofproto_class->set_ipfix(ofproto, bo, fo, n_fo); | |
696 | } else { | |
697 | return (bo || fo) ? EOPNOTSUPP : 0; | |
698 | } | |
699 | } | |
40358701 GS |
700 | |
701 | void | |
702 | ofproto_set_flow_restore_wait(bool flow_restore_wait_db) | |
703 | { | |
704 | flow_restore_wait = flow_restore_wait_db; | |
705 | } | |
706 | ||
707 | bool | |
708 | ofproto_get_flow_restore_wait(void) | |
709 | { | |
710 | return flow_restore_wait; | |
711 | } | |
712 | ||
e7934396 | 713 | \f |
21f7563c JP |
714 | /* Spanning Tree Protocol (STP) configuration. */ |
715 | ||
716 | /* Configures STP on 'ofproto' using the settings defined in 's'. If | |
717 | * 's' is NULL, disables STP. | |
718 | * | |
719 | * Returns 0 if successful, otherwise a positive errno value. */ | |
720 | int | |
721 | ofproto_set_stp(struct ofproto *ofproto, | |
722 | const struct ofproto_stp_settings *s) | |
723 | { | |
724 | return (ofproto->ofproto_class->set_stp | |
725 | ? ofproto->ofproto_class->set_stp(ofproto, s) | |
726 | : EOPNOTSUPP); | |
727 | } | |
728 | ||
729 | /* Retrieves STP status of 'ofproto' and stores it in 's'. If the | |
730 | * 'enabled' member of 's' is false, then the other members are not | |
731 | * meaningful. | |
732 | * | |
733 | * Returns 0 if successful, otherwise a positive errno value. */ | |
734 | int | |
735 | ofproto_get_stp_status(struct ofproto *ofproto, | |
736 | struct ofproto_stp_status *s) | |
737 | { | |
738 | return (ofproto->ofproto_class->get_stp_status | |
739 | ? ofproto->ofproto_class->get_stp_status(ofproto, s) | |
740 | : EOPNOTSUPP); | |
741 | } | |
742 | ||
743 | /* Configures STP on 'ofp_port' of 'ofproto' using the settings defined | |
744 | * in 's'. The caller is responsible for assigning STP port numbers | |
745 | * (using the 'port_num' member in the range of 1 through 255, inclusive) | |
746 | * and ensuring there are no duplicates. If the 's' is NULL, then STP | |
747 | * is disabled on the port. | |
748 | * | |
749 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
750 | int | |
4e022ec0 | 751 | ofproto_port_set_stp(struct ofproto *ofproto, ofp_port_t ofp_port, |
21f7563c JP |
752 | const struct ofproto_port_stp_settings *s) |
753 | { | |
754 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
755 | if (!ofport) { | |
756 | VLOG_WARN("%s: cannot configure STP on nonexistent port %"PRIu16, | |
757 | ofproto->name, ofp_port); | |
758 | return ENODEV; | |
759 | } | |
760 | ||
761 | return (ofproto->ofproto_class->set_stp_port | |
762 | ? ofproto->ofproto_class->set_stp_port(ofport, s) | |
763 | : EOPNOTSUPP); | |
764 | } | |
765 | ||
766 | /* Retrieves STP port status of 'ofp_port' on 'ofproto' and stores it in | |
767 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
768 | * are not meaningful. | |
769 | * | |
770 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
771 | int | |
4e022ec0 | 772 | ofproto_port_get_stp_status(struct ofproto *ofproto, ofp_port_t ofp_port, |
21f7563c JP |
773 | struct ofproto_port_stp_status *s) |
774 | { | |
775 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
776 | if (!ofport) { | |
b0a5c43b JP |
777 | VLOG_WARN_RL(&rl, "%s: cannot get STP status on nonexistent " |
778 | "port %"PRIu16, ofproto->name, ofp_port); | |
21f7563c JP |
779 | return ENODEV; |
780 | } | |
781 | ||
782 | return (ofproto->ofproto_class->get_stp_port_status | |
783 | ? ofproto->ofproto_class->get_stp_port_status(ofport, s) | |
784 | : EOPNOTSUPP); | |
785 | } | |
786 | \f | |
8b36f51e EJ |
787 | /* Queue DSCP configuration. */ |
788 | ||
789 | /* Registers meta-data associated with the 'n_qdscp' Qualities of Service | |
790 | * 'queues' attached to 'ofport'. This data is not intended to be sufficient | |
791 | * to implement QoS. Instead, it is used to implement features which require | |
792 | * knowledge of what queues exist on a port, and some basic information about | |
793 | * them. | |
794 | * | |
795 | * Returns 0 if successful, otherwise a positive errno value. */ | |
796 | int | |
4e022ec0 | 797 | ofproto_port_set_queues(struct ofproto *ofproto, ofp_port_t ofp_port, |
8b36f51e EJ |
798 | const struct ofproto_port_queue *queues, |
799 | size_t n_queues) | |
800 | { | |
801 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
802 | ||
803 | if (!ofport) { | |
804 | VLOG_WARN("%s: cannot set queues on nonexistent port %"PRIu16, | |
805 | ofproto->name, ofp_port); | |
806 | return ENODEV; | |
807 | } | |
808 | ||
809 | return (ofproto->ofproto_class->set_queues | |
810 | ? ofproto->ofproto_class->set_queues(ofport, queues, n_queues) | |
811 | : EOPNOTSUPP); | |
812 | } | |
813 | \f | |
e7934396 BP |
814 | /* Connectivity Fault Management configuration. */ |
815 | ||
892815f5 | 816 | /* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */ |
e7934396 | 817 | void |
4e022ec0 | 818 | ofproto_port_clear_cfm(struct ofproto *ofproto, ofp_port_t ofp_port) |
e7934396 | 819 | { |
abe529af BP |
820 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
821 | if (ofport && ofproto->ofproto_class->set_cfm) { | |
a5610457 | 822 | ofproto->ofproto_class->set_cfm(ofport, NULL); |
e7934396 BP |
823 | } |
824 | } | |
72b06300 | 825 | |
892815f5 | 826 | /* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes |
93b8df38 EJ |
827 | * basic configuration from the configuration members in 'cfm', and the remote |
828 | * maintenance point ID from remote_mpid. Ignores the statistics members of | |
829 | * 'cfm'. | |
e7934396 | 830 | * |
892815f5 | 831 | * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */ |
e7934396 | 832 | void |
4e022ec0 | 833 | ofproto_port_set_cfm(struct ofproto *ofproto, ofp_port_t ofp_port, |
a5610457 | 834 | const struct cfm_settings *s) |
e7934396 BP |
835 | { |
836 | struct ofport *ofport; | |
abe529af | 837 | int error; |
e7934396 | 838 | |
abe529af | 839 | ofport = ofproto_get_port(ofproto, ofp_port); |
e7934396 | 840 | if (!ofport) { |
892815f5 BP |
841 | VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16, |
842 | ofproto->name, ofp_port); | |
e7934396 BP |
843 | return; |
844 | } | |
845 | ||
93b8df38 EJ |
846 | /* XXX: For configuration simplicity, we only support one remote_mpid |
847 | * outside of the CFM module. It's not clear if this is the correct long | |
848 | * term solution or not. */ | |
abe529af | 849 | error = (ofproto->ofproto_class->set_cfm |
a5610457 | 850 | ? ofproto->ofproto_class->set_cfm(ofport, s) |
abe529af BP |
851 | : EOPNOTSUPP); |
852 | if (error) { | |
853 | VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed (%s)", | |
854 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
10a89ef0 | 855 | ovs_strerror(error)); |
e7934396 | 856 | } |
e7934396 | 857 | } |
e7934396 | 858 | |
ccc09689 EJ |
859 | /* Configures BFD on 'ofp_port' in 'ofproto'. This function has no effect if |
860 | * 'ofproto' does not have a port 'ofp_port'. */ | |
861 | void | |
4e022ec0 | 862 | ofproto_port_set_bfd(struct ofproto *ofproto, ofp_port_t ofp_port, |
ccc09689 EJ |
863 | const struct smap *cfg) |
864 | { | |
865 | struct ofport *ofport; | |
866 | int error; | |
867 | ||
868 | ofport = ofproto_get_port(ofproto, ofp_port); | |
869 | if (!ofport) { | |
870 | VLOG_WARN("%s: cannot configure bfd on nonexistent port %"PRIu16, | |
871 | ofproto->name, ofp_port); | |
e8999bdc | 872 | return; |
ccc09689 EJ |
873 | } |
874 | ||
875 | error = (ofproto->ofproto_class->set_bfd | |
876 | ? ofproto->ofproto_class->set_bfd(ofport, cfg) | |
877 | : EOPNOTSUPP); | |
878 | if (error) { | |
879 | VLOG_WARN("%s: bfd configuration on port %"PRIu16" (%s) failed (%s)", | |
880 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
10a89ef0 | 881 | ovs_strerror(error)); |
ccc09689 EJ |
882 | } |
883 | } | |
884 | ||
885 | /* Populates 'status' with key value pairs indicating the status of the BFD | |
886 | * session on 'ofp_port'. This information is intended to be populated in the | |
887 | * OVS database. Has no effect if 'ofp_port' is not na OpenFlow port in | |
888 | * 'ofproto'. */ | |
889 | int | |
4e022ec0 | 890 | ofproto_port_get_bfd_status(struct ofproto *ofproto, ofp_port_t ofp_port, |
ccc09689 EJ |
891 | struct smap *status) |
892 | { | |
893 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
894 | return (ofport && ofproto->ofproto_class->get_bfd_status | |
895 | ? ofproto->ofproto_class->get_bfd_status(ofport, status) | |
896 | : EOPNOTSUPP); | |
897 | } | |
898 | ||
fa066f01 BP |
899 | /* Checks the status of LACP negotiation for 'ofp_port' within ofproto. |
900 | * Returns 1 if LACP partner information for 'ofp_port' is up-to-date, | |
901 | * 0 if LACP partner information is not current (generally indicating a | |
902 | * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */ | |
903 | int | |
4e022ec0 | 904 | ofproto_port_is_lacp_current(struct ofproto *ofproto, ofp_port_t ofp_port) |
fa066f01 | 905 | { |
abe529af BP |
906 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
907 | return (ofport && ofproto->ofproto_class->port_is_lacp_current | |
908 | ? ofproto->ofproto_class->port_is_lacp_current(ofport) | |
fa066f01 | 909 | : -1); |
e7934396 | 910 | } |
e7934396 | 911 | \f |
fa066f01 | 912 | /* Bundles. */ |
e7934396 | 913 | |
abe529af BP |
914 | /* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'. |
915 | * A bundle is the same concept as a Port in OVSDB, that is, it consists of one | |
916 | * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN | |
917 | * configuration plus, if there is more than one slave, a bonding | |
918 | * configuration. | |
919 | * | |
920 | * If 'aux' is already registered then this function updates its configuration | |
921 | * to 's'. Otherwise, this function registers a new bundle. | |
922 | * | |
923 | * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL | |
924 | * port. */ | |
925 | int | |
926 | ofproto_bundle_register(struct ofproto *ofproto, void *aux, | |
927 | const struct ofproto_bundle_settings *s) | |
fa066f01 | 928 | { |
abe529af BP |
929 | return (ofproto->ofproto_class->bundle_set |
930 | ? ofproto->ofproto_class->bundle_set(ofproto, aux, s) | |
931 | : EOPNOTSUPP); | |
fa066f01 BP |
932 | } |
933 | ||
abe529af BP |
934 | /* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'. |
935 | * If no such bundle has been registered, this has no effect. */ | |
936 | int | |
937 | ofproto_bundle_unregister(struct ofproto *ofproto, void *aux) | |
e7934396 | 938 | { |
abe529af | 939 | return ofproto_bundle_register(ofproto, aux, NULL); |
e7934396 | 940 | } |
fa066f01 | 941 | |
e7934396 | 942 | \f |
abe529af BP |
943 | /* Registers a mirror associated with client data pointer 'aux' in 'ofproto'. |
944 | * If 'aux' is already registered then this function updates its configuration | |
c06bba01 | 945 | * to 's'. Otherwise, this function registers a new mirror. */ |
abe529af BP |
946 | int |
947 | ofproto_mirror_register(struct ofproto *ofproto, void *aux, | |
948 | const struct ofproto_mirror_settings *s) | |
064af421 | 949 | { |
abe529af BP |
950 | return (ofproto->ofproto_class->mirror_set |
951 | ? ofproto->ofproto_class->mirror_set(ofproto, aux, s) | |
952 | : EOPNOTSUPP); | |
064af421 BP |
953 | } |
954 | ||
abe529af BP |
955 | /* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'. |
956 | * If no mirror has been registered, this has no effect. */ | |
957 | int | |
958 | ofproto_mirror_unregister(struct ofproto *ofproto, void *aux) | |
064af421 | 959 | { |
abe529af | 960 | return ofproto_mirror_register(ofproto, aux, NULL); |
064af421 BP |
961 | } |
962 | ||
9d24de3b JP |
963 | /* Retrieves statistics from mirror associated with client data pointer |
964 | * 'aux' in 'ofproto'. Stores packet and byte counts in 'packets' and | |
965 | * 'bytes', respectively. If a particular counters is not supported, | |
966 | * the appropriate argument is set to UINT64_MAX. */ | |
967 | int | |
968 | ofproto_mirror_get_stats(struct ofproto *ofproto, void *aux, | |
969 | uint64_t *packets, uint64_t *bytes) | |
970 | { | |
971 | if (!ofproto->ofproto_class->mirror_get_stats) { | |
972 | *packets = *bytes = UINT64_MAX; | |
973 | return EOPNOTSUPP; | |
974 | } | |
975 | ||
976 | return ofproto->ofproto_class->mirror_get_stats(ofproto, aux, | |
977 | packets, bytes); | |
978 | } | |
979 | ||
abe529af BP |
980 | /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on |
981 | * which all packets are flooded, instead of using MAC learning. If | |
982 | * 'flood_vlans' is NULL, then MAC learning applies to all VLANs. | |
983 | * | |
984 | * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL | |
985 | * port. */ | |
986 | int | |
987 | ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans) | |
abdfe474 | 988 | { |
abe529af BP |
989 | return (ofproto->ofproto_class->set_flood_vlans |
990 | ? ofproto->ofproto_class->set_flood_vlans(ofproto, flood_vlans) | |
991 | : EOPNOTSUPP); | |
abdfe474 JP |
992 | } |
993 | ||
abe529af BP |
994 | /* Returns true if 'aux' is a registered bundle that is currently in use as the |
995 | * output for a mirror. */ | |
996 | bool | |
b4affc74 | 997 | ofproto_is_mirror_output_bundle(const struct ofproto *ofproto, void *aux) |
abe529af BP |
998 | { |
999 | return (ofproto->ofproto_class->is_mirror_output_bundle | |
1000 | ? ofproto->ofproto_class->is_mirror_output_bundle(ofproto, aux) | |
1001 | : false); | |
1002 | } | |
1003 | \f | |
254750ce BP |
1004 | /* Configuration of OpenFlow tables. */ |
1005 | ||
1006 | /* Returns the number of OpenFlow tables in 'ofproto'. */ | |
1007 | int | |
1008 | ofproto_get_n_tables(const struct ofproto *ofproto) | |
1009 | { | |
1010 | return ofproto->n_tables; | |
1011 | } | |
1012 | ||
1013 | /* Configures the OpenFlow table in 'ofproto' with id 'table_id' with the | |
1014 | * settings from 's'. 'table_id' must be in the range 0 through the number of | |
1015 | * OpenFlow tables in 'ofproto' minus 1, inclusive. | |
1016 | * | |
1017 | * For read-only tables, only the name may be configured. */ | |
1018 | void | |
1019 | ofproto_configure_table(struct ofproto *ofproto, int table_id, | |
1020 | const struct ofproto_table_settings *s) | |
1021 | { | |
1022 | struct oftable *table; | |
1023 | ||
cb22974d | 1024 | ovs_assert(table_id >= 0 && table_id < ofproto->n_tables); |
254750ce BP |
1025 | table = &ofproto->tables[table_id]; |
1026 | ||
1027 | oftable_set_name(table, s->name); | |
1028 | ||
1029 | if (table->flags & OFTABLE_READONLY) { | |
1030 | return; | |
1031 | } | |
1032 | ||
1033 | if (s->groups) { | |
1034 | oftable_enable_eviction(table, s->groups, s->n_groups); | |
1035 | } else { | |
1036 | oftable_disable_eviction(table); | |
1037 | } | |
1038 | ||
1039 | table->max_flows = s->max_flows; | |
0b4f2078 | 1040 | ovs_rwlock_rdlock(&table->cls.rwlock); |
254750ce BP |
1041 | if (classifier_count(&table->cls) > table->max_flows |
1042 | && table->eviction_fields) { | |
1043 | /* 'table' contains more flows than allowed. We might not be able to | |
1044 | * evict them right away because of the asynchronous nature of flow | |
1045 | * table changes. Schedule eviction for later. */ | |
1046 | switch (ofproto->state) { | |
1047 | case S_OPENFLOW: | |
1048 | ofproto->state = S_EVICT; | |
1049 | break; | |
1050 | case S_EVICT: | |
1051 | case S_FLUSH: | |
1052 | /* We're already deleting flows, nothing more to do. */ | |
1053 | break; | |
1054 | } | |
1055 | } | |
0b4f2078 | 1056 | ovs_rwlock_unlock(&table->cls.rwlock); |
254750ce BP |
1057 | } |
1058 | \f | |
81e2083f BP |
1059 | bool |
1060 | ofproto_has_snoops(const struct ofproto *ofproto) | |
1061 | { | |
1062 | return connmgr_has_snoops(ofproto->connmgr); | |
1063 | } | |
1064 | ||
064af421 | 1065 | void |
81e2083f | 1066 | ofproto_get_snoops(const struct ofproto *ofproto, struct sset *snoops) |
064af421 | 1067 | { |
19a87e36 | 1068 | connmgr_get_snoops(ofproto->connmgr, snoops); |
064af421 BP |
1069 | } |
1070 | ||
7ee20df1 BP |
1071 | static void |
1072 | ofproto_flush__(struct ofproto *ofproto) | |
1073 | { | |
7ee20df1 | 1074 | struct ofopgroup *group; |
d0918789 | 1075 | struct oftable *table; |
7ee20df1 BP |
1076 | |
1077 | if (ofproto->ofproto_class->flush) { | |
1078 | ofproto->ofproto_class->flush(ofproto); | |
1079 | } | |
1080 | ||
7024dffe | 1081 | group = ofopgroup_create_unattached(ofproto); |
b772ded8 | 1082 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
7ee20df1 BP |
1083 | struct rule *rule, *next_rule; |
1084 | struct cls_cursor cursor; | |
1085 | ||
5c67e4af BP |
1086 | if (table->flags & OFTABLE_HIDDEN) { |
1087 | continue; | |
1088 | } | |
1089 | ||
0b4f2078 | 1090 | ovs_rwlock_wrlock(&table->cls.rwlock); |
d0918789 | 1091 | cls_cursor_init(&cursor, &table->cls, NULL); |
7ee20df1 BP |
1092 | CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) { |
1093 | if (!rule->pending) { | |
2b07c8b1 BP |
1094 | ofoperation_create(group, rule, OFOPERATION_DELETE, |
1095 | OFPRR_DELETE); | |
ad3efdcb | 1096 | ovs_rwlock_wrlock(&rule->evict); |
0b4f2078 | 1097 | oftable_remove_rule__(ofproto, &table->cls, rule); |
7ee20df1 BP |
1098 | ofproto->ofproto_class->rule_destruct(rule); |
1099 | } | |
1100 | } | |
0b4f2078 | 1101 | ovs_rwlock_unlock(&table->cls.rwlock); |
7ee20df1 BP |
1102 | } |
1103 | ofopgroup_submit(group); | |
1104 | } | |
1105 | ||
abe529af BP |
1106 | static void |
1107 | ofproto_destroy__(struct ofproto *ofproto) | |
1108 | { | |
d0918789 | 1109 | struct oftable *table; |
6c1491fb | 1110 | |
cb22974d BP |
1111 | ovs_assert(list_is_empty(&ofproto->pending)); |
1112 | ovs_assert(!ofproto->n_pending); | |
7ee20df1 | 1113 | |
6b3f7f02 JR |
1114 | if (ofproto->meters) { |
1115 | meter_delete(ofproto, 1, ofproto->meter_features.max_meters); | |
1116 | free(ofproto->meters); | |
1117 | } | |
1118 | ||
abe529af | 1119 | connmgr_destroy(ofproto->connmgr); |
fa066f01 | 1120 | |
abe529af BP |
1121 | hmap_remove(&all_ofprotos, &ofproto->hmap_node); |
1122 | free(ofproto->name); | |
955a7127 | 1123 | free(ofproto->type); |
abe529af BP |
1124 | free(ofproto->mfr_desc); |
1125 | free(ofproto->hw_desc); | |
1126 | free(ofproto->sw_desc); | |
1127 | free(ofproto->serial_desc); | |
1128 | free(ofproto->dp_desc); | |
abe529af BP |
1129 | hmap_destroy(&ofproto->ports); |
1130 | shash_destroy(&ofproto->port_by_name); | |
e1b1d06a JP |
1131 | bitmap_free(ofproto->ofp_port_ids); |
1132 | simap_destroy(&ofproto->ofp_requests); | |
6c1491fb | 1133 | |
b772ded8 | 1134 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
d0918789 | 1135 | oftable_destroy(table); |
6c1491fb BP |
1136 | } |
1137 | free(ofproto->tables); | |
fa066f01 | 1138 | |
7ee20df1 BP |
1139 | hmap_destroy(&ofproto->deletions); |
1140 | ||
52a90c29 BP |
1141 | free(ofproto->vlan_bitmap); |
1142 | ||
83b16b98 | 1143 | ovs_mutex_destroy(&ofproto->expirable_mutex); |
abe529af BP |
1144 | ofproto->ofproto_class->dealloc(ofproto); |
1145 | } | |
fa066f01 | 1146 | |
064af421 BP |
1147 | void |
1148 | ofproto_destroy(struct ofproto *p) | |
1149 | { | |
ca0f572c | 1150 | struct ofport *ofport, *next_ofport; |
064af421 BP |
1151 | |
1152 | if (!p) { | |
1153 | return; | |
1154 | } | |
1155 | ||
7ee20df1 | 1156 | ofproto_flush__(p); |
4e8e4213 | 1157 | HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) { |
abe529af | 1158 | ofport_destroy(ofport); |
064af421 | 1159 | } |
064af421 | 1160 | |
abe529af BP |
1161 | p->ofproto_class->destruct(p); |
1162 | ofproto_destroy__(p); | |
064af421 BP |
1163 | } |
1164 | ||
abe529af BP |
1165 | /* Destroys the datapath with the respective 'name' and 'type'. With the Linux |
1166 | * kernel datapath, for example, this destroys the datapath in the kernel, and | |
1167 | * with the netdev-based datapath, it tears down the data structures that | |
1168 | * represent the datapath. | |
1169 | * | |
1170 | * The datapath should not be currently open as an ofproto. */ | |
064af421 | 1171 | int |
abe529af | 1172 | ofproto_delete(const char *name, const char *type) |
064af421 | 1173 | { |
abe529af BP |
1174 | const struct ofproto_class *class = ofproto_class_find__(type); |
1175 | return (!class ? EAFNOSUPPORT | |
1176 | : !class->del ? EACCES | |
1177 | : class->del(type, name)); | |
064af421 BP |
1178 | } |
1179 | ||
e9e28be3 BP |
1180 | static void |
1181 | process_port_change(struct ofproto *ofproto, int error, char *devname) | |
1182 | { | |
1183 | if (error == ENOBUFS) { | |
1184 | reinit_ports(ofproto); | |
1185 | } else if (!error) { | |
1186 | update_port(ofproto, devname); | |
1187 | free(devname); | |
1188 | } | |
1189 | } | |
1190 | ||
11a574a7 JP |
1191 | int |
1192 | ofproto_type_run(const char *datapath_type) | |
1193 | { | |
1194 | const struct ofproto_class *class; | |
1195 | int error; | |
1196 | ||
1197 | datapath_type = ofproto_normalize_type(datapath_type); | |
1198 | class = ofproto_class_find__(datapath_type); | |
1199 | ||
1200 | error = class->type_run ? class->type_run(datapath_type) : 0; | |
1201 | if (error && error != EAGAIN) { | |
1202 | VLOG_ERR_RL(&rl, "%s: type_run failed (%s)", | |
10a89ef0 | 1203 | datapath_type, ovs_strerror(error)); |
11a574a7 JP |
1204 | } |
1205 | return error; | |
1206 | } | |
1207 | ||
1208 | int | |
1209 | ofproto_type_run_fast(const char *datapath_type) | |
1210 | { | |
1211 | const struct ofproto_class *class; | |
1212 | int error; | |
1213 | ||
1214 | datapath_type = ofproto_normalize_type(datapath_type); | |
1215 | class = ofproto_class_find__(datapath_type); | |
1216 | ||
1217 | error = class->type_run_fast ? class->type_run_fast(datapath_type) : 0; | |
1218 | if (error && error != EAGAIN) { | |
1219 | VLOG_ERR_RL(&rl, "%s: type_run_fast failed (%s)", | |
10a89ef0 | 1220 | datapath_type, ovs_strerror(error)); |
11a574a7 JP |
1221 | } |
1222 | return error; | |
1223 | } | |
1224 | ||
1225 | void | |
1226 | ofproto_type_wait(const char *datapath_type) | |
1227 | { | |
1228 | const struct ofproto_class *class; | |
1229 | ||
1230 | datapath_type = ofproto_normalize_type(datapath_type); | |
1231 | class = ofproto_class_find__(datapath_type); | |
1232 | ||
1233 | if (class->type_wait) { | |
1234 | class->type_wait(datapath_type); | |
1235 | } | |
1236 | } | |
1237 | ||
064af421 | 1238 | int |
abe529af | 1239 | ofproto_run(struct ofproto *p) |
064af421 | 1240 | { |
7436ed80 BP |
1241 | struct sset changed_netdevs; |
1242 | const char *changed_netdev; | |
031d8bff | 1243 | struct ofport *ofport; |
064af421 | 1244 | int error; |
064af421 | 1245 | |
abe529af | 1246 | error = p->ofproto_class->run(p); |
5fcc0d00 | 1247 | if (error && error != EAGAIN) { |
10a89ef0 | 1248 | VLOG_ERR_RL(&rl, "%s: run failed (%s)", p->name, ovs_strerror(error)); |
149f577a JG |
1249 | } |
1250 | ||
5bf0e941 | 1251 | if (p->ofproto_class->port_poll) { |
7436ed80 BP |
1252 | char *devname; |
1253 | ||
5bf0e941 BP |
1254 | while ((error = p->ofproto_class->port_poll(p, &devname)) != EAGAIN) { |
1255 | process_port_change(p, error, devname); | |
064af421 | 1256 | } |
e9e28be3 | 1257 | } |
031d8bff | 1258 | |
7436ed80 BP |
1259 | /* Update OpenFlow port status for any port whose netdev has changed. |
1260 | * | |
1261 | * Refreshing a given 'ofport' can cause an arbitrary ofport to be | |
1262 | * destroyed, so it's not safe to update ports directly from the | |
1263 | * HMAP_FOR_EACH loop, or even to use HMAP_FOR_EACH_SAFE. Instead, we | |
1264 | * need this two-phase approach. */ | |
1265 | sset_init(&changed_netdevs); | |
031d8bff EJ |
1266 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { |
1267 | unsigned int change_seq = netdev_change_seq(ofport->netdev); | |
1268 | if (ofport->change_seq != change_seq) { | |
1269 | ofport->change_seq = change_seq; | |
7436ed80 | 1270 | sset_add(&changed_netdevs, netdev_get_name(ofport->netdev)); |
031d8bff | 1271 | } |
064af421 | 1272 | } |
7436ed80 BP |
1273 | SSET_FOR_EACH (changed_netdev, &changed_netdevs) { |
1274 | update_port(p, changed_netdev); | |
1275 | } | |
1276 | sset_destroy(&changed_netdevs); | |
064af421 | 1277 | |
7ee20df1 BP |
1278 | switch (p->state) { |
1279 | case S_OPENFLOW: | |
1280 | connmgr_run(p->connmgr, handle_openflow); | |
1281 | break; | |
1282 | ||
254750ce BP |
1283 | case S_EVICT: |
1284 | connmgr_run(p->connmgr, NULL); | |
1285 | ofproto_evict(p); | |
1286 | if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) { | |
1287 | p->state = S_OPENFLOW; | |
1288 | } | |
1289 | break; | |
1290 | ||
7ee20df1 BP |
1291 | case S_FLUSH: |
1292 | connmgr_run(p->connmgr, NULL); | |
1293 | ofproto_flush__(p); | |
1294 | if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) { | |
1295 | connmgr_flushed(p->connmgr); | |
1296 | p->state = S_OPENFLOW; | |
1297 | } | |
1298 | break; | |
1299 | ||
1300 | default: | |
1301 | NOT_REACHED(); | |
1302 | } | |
064af421 | 1303 | |
a5b8d268 BP |
1304 | if (time_msec() >= p->next_op_report) { |
1305 | long long int ago = (time_msec() - p->first_op) / 1000; | |
1306 | long long int interval = (p->last_op - p->first_op) / 1000; | |
1307 | struct ds s; | |
1308 | ||
1309 | ds_init(&s); | |
1310 | ds_put_format(&s, "%d flow_mods ", | |
1311 | p->n_add + p->n_delete + p->n_modify); | |
1312 | if (interval == ago) { | |
1313 | ds_put_format(&s, "in the last %lld s", ago); | |
1314 | } else if (interval) { | |
1315 | ds_put_format(&s, "in the %lld s starting %lld s ago", | |
1316 | interval, ago); | |
1317 | } else { | |
1318 | ds_put_format(&s, "%lld s ago", ago); | |
1319 | } | |
1320 | ||
1321 | ds_put_cstr(&s, " ("); | |
1322 | if (p->n_add) { | |
1323 | ds_put_format(&s, "%d adds, ", p->n_add); | |
1324 | } | |
1325 | if (p->n_delete) { | |
1326 | ds_put_format(&s, "%d deletes, ", p->n_delete); | |
1327 | } | |
1328 | if (p->n_modify) { | |
1329 | ds_put_format(&s, "%d modifications, ", p->n_modify); | |
1330 | } | |
1331 | s.length -= 2; | |
1332 | ds_put_char(&s, ')'); | |
1333 | ||
fbfa2911 | 1334 | VLOG_INFO("%s: %s", p->name, ds_cstr(&s)); |
a5b8d268 BP |
1335 | ds_destroy(&s); |
1336 | ||
1337 | p->n_add = p->n_delete = p->n_modify = 0; | |
1338 | p->next_op_report = LLONG_MAX; | |
1339 | } | |
1340 | ||
5fcc0d00 BP |
1341 | return error; |
1342 | } | |
1343 | ||
1344 | /* Performs periodic activity required by 'ofproto' that needs to be done | |
1345 | * with the least possible latency. | |
1346 | * | |
1347 | * It makes sense to call this function a couple of times per poll loop, to | |
1348 | * provide a significant performance boost on some benchmarks with the | |
1349 | * ofproto-dpif implementation. */ | |
1350 | int | |
1351 | ofproto_run_fast(struct ofproto *p) | |
1352 | { | |
1353 | int error; | |
1354 | ||
1355 | error = p->ofproto_class->run_fast ? p->ofproto_class->run_fast(p) : 0; | |
1356 | if (error && error != EAGAIN) { | |
1357 | VLOG_ERR_RL(&rl, "%s: fastpath run failed (%s)", | |
10a89ef0 | 1358 | p->name, ovs_strerror(error)); |
5fcc0d00 BP |
1359 | } |
1360 | return error; | |
064af421 BP |
1361 | } |
1362 | ||
1363 | void | |
1364 | ofproto_wait(struct ofproto *p) | |
1365 | { | |
031d8bff EJ |
1366 | struct ofport *ofport; |
1367 | ||
abe529af | 1368 | p->ofproto_class->wait(p); |
5bf0e941 BP |
1369 | if (p->ofproto_class->port_poll_wait) { |
1370 | p->ofproto_class->port_poll_wait(p); | |
e7934396 | 1371 | } |
031d8bff EJ |
1372 | |
1373 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
1374 | if (ofport->change_seq != netdev_change_seq(ofport->netdev)) { | |
1375 | poll_immediate_wake(); | |
1376 | } | |
1377 | } | |
7ee20df1 BP |
1378 | |
1379 | switch (p->state) { | |
1380 | case S_OPENFLOW: | |
1381 | connmgr_wait(p->connmgr, true); | |
1382 | break; | |
1383 | ||
254750ce | 1384 | case S_EVICT: |
7ee20df1 BP |
1385 | case S_FLUSH: |
1386 | connmgr_wait(p->connmgr, false); | |
1387 | if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) { | |
1388 | poll_immediate_wake(); | |
1389 | } | |
1390 | break; | |
1391 | } | |
064af421 BP |
1392 | } |
1393 | ||
064af421 BP |
1394 | bool |
1395 | ofproto_is_alive(const struct ofproto *p) | |
1396 | { | |
19a87e36 | 1397 | return connmgr_has_controllers(p->connmgr); |
064af421 BP |
1398 | } |
1399 | ||
0d085684 BP |
1400 | /* Adds some memory usage statistics for 'ofproto' into 'usage', for use with |
1401 | * memory_report(). */ | |
1402 | void | |
1403 | ofproto_get_memory_usage(const struct ofproto *ofproto, struct simap *usage) | |
1404 | { | |
1405 | const struct oftable *table; | |
1406 | unsigned int n_rules; | |
1407 | ||
1408 | simap_increase(usage, "ports", hmap_count(&ofproto->ports)); | |
1409 | simap_increase(usage, "ops", | |
1410 | ofproto->n_pending + hmap_count(&ofproto->deletions)); | |
1411 | ||
1412 | n_rules = 0; | |
1413 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
0b4f2078 | 1414 | ovs_rwlock_rdlock(&table->cls.rwlock); |
0d085684 | 1415 | n_rules += classifier_count(&table->cls); |
0b4f2078 | 1416 | ovs_rwlock_unlock(&table->cls.rwlock); |
0d085684 BP |
1417 | } |
1418 | simap_increase(usage, "rules", n_rules); | |
1419 | ||
1420 | if (ofproto->ofproto_class->get_memory_usage) { | |
1421 | ofproto->ofproto_class->get_memory_usage(ofproto, usage); | |
1422 | } | |
1423 | ||
1424 | connmgr_get_memory_usage(ofproto->connmgr, usage); | |
1425 | } | |
1426 | ||
bffc0589 | 1427 | void |
2cdcb898 | 1428 | ofproto_get_ofproto_controller_info(const struct ofproto *ofproto, |
bffc0589 AE |
1429 | struct shash *info) |
1430 | { | |
19a87e36 | 1431 | connmgr_get_controller_info(ofproto->connmgr, info); |
bffc0589 AE |
1432 | } |
1433 | ||
1434 | void | |
1435 | ofproto_free_ofproto_controller_info(struct shash *info) | |
1436 | { | |
72ba2ed3 | 1437 | connmgr_free_controller_info(info); |
bffc0589 AE |
1438 | } |
1439 | ||
b5827b24 BP |
1440 | /* Makes a deep copy of 'old' into 'port'. */ |
1441 | void | |
1442 | ofproto_port_clone(struct ofproto_port *port, const struct ofproto_port *old) | |
1443 | { | |
1444 | port->name = xstrdup(old->name); | |
1445 | port->type = xstrdup(old->type); | |
1446 | port->ofp_port = old->ofp_port; | |
1447 | } | |
1448 | ||
1449 | /* Frees memory allocated to members of 'ofproto_port'. | |
3a6ccc8c | 1450 | * |
b5827b24 BP |
1451 | * Do not call this function on an ofproto_port obtained from |
1452 | * ofproto_port_dump_next(): that function retains ownership of the data in the | |
1453 | * ofproto_port. */ | |
1454 | void | |
1455 | ofproto_port_destroy(struct ofproto_port *ofproto_port) | |
1456 | { | |
1457 | free(ofproto_port->name); | |
1458 | free(ofproto_port->type); | |
1459 | } | |
1460 | ||
b5827b24 | 1461 | /* Initializes 'dump' to begin dumping the ports in an ofproto. |
3a6ccc8c | 1462 | * |
b5827b24 BP |
1463 | * This function provides no status indication. An error status for the entire |
1464 | * dump operation is provided when it is completed by calling | |
1465 | * ofproto_port_dump_done(). | |
1466 | */ | |
1467 | void | |
1468 | ofproto_port_dump_start(struct ofproto_port_dump *dump, | |
1469 | const struct ofproto *ofproto) | |
1470 | { | |
abe529af BP |
1471 | dump->ofproto = ofproto; |
1472 | dump->error = ofproto->ofproto_class->port_dump_start(ofproto, | |
1473 | &dump->state); | |
b5827b24 BP |
1474 | } |
1475 | ||
1476 | /* Attempts to retrieve another port from 'dump', which must have been created | |
1477 | * with ofproto_port_dump_start(). On success, stores a new ofproto_port into | |
1478 | * 'port' and returns true. On failure, returns false. | |
1479 | * | |
1480 | * Failure might indicate an actual error or merely that the last port has been | |
1481 | * dumped. An error status for the entire dump operation is provided when it | |
1482 | * is completed by calling ofproto_port_dump_done(). | |
1483 | * | |
1484 | * The ofproto owns the data stored in 'port'. It will remain valid until at | |
1485 | * least the next time 'dump' is passed to ofproto_port_dump_next() or | |
1486 | * ofproto_port_dump_done(). */ | |
1487 | bool | |
1488 | ofproto_port_dump_next(struct ofproto_port_dump *dump, | |
1489 | struct ofproto_port *port) | |
1490 | { | |
abe529af BP |
1491 | const struct ofproto *ofproto = dump->ofproto; |
1492 | ||
1493 | if (dump->error) { | |
1494 | return false; | |
1495 | } | |
b5827b24 | 1496 | |
abe529af BP |
1497 | dump->error = ofproto->ofproto_class->port_dump_next(ofproto, dump->state, |
1498 | port); | |
1499 | if (dump->error) { | |
1500 | ofproto->ofproto_class->port_dump_done(ofproto, dump->state); | |
1501 | return false; | |
b5827b24 | 1502 | } |
abe529af | 1503 | return true; |
b5827b24 BP |
1504 | } |
1505 | ||
1506 | /* Completes port table dump operation 'dump', which must have been created | |
1507 | * with ofproto_port_dump_start(). Returns 0 if the dump operation was | |
1508 | * error-free, otherwise a positive errno value describing the problem. */ | |
3a6ccc8c | 1509 | int |
b5827b24 | 1510 | ofproto_port_dump_done(struct ofproto_port_dump *dump) |
3a6ccc8c | 1511 | { |
abe529af BP |
1512 | const struct ofproto *ofproto = dump->ofproto; |
1513 | if (!dump->error) { | |
1514 | dump->error = ofproto->ofproto_class->port_dump_done(ofproto, | |
1515 | dump->state); | |
1516 | } | |
1517 | return dump->error == EOF ? 0 : dump->error; | |
b5827b24 BP |
1518 | } |
1519 | ||
0aeaabc8 JP |
1520 | /* Returns the type to pass to netdev_open() when a datapath of type |
1521 | * 'datapath_type' has a port of type 'port_type', for a few special | |
1522 | * cases when a netdev type differs from a port type. For example, when | |
1523 | * using the userspace datapath, a port of type "internal" needs to be | |
1524 | * opened as "tap". | |
1525 | * | |
1526 | * Returns either 'type' itself or a string literal, which must not be | |
1527 | * freed. */ | |
1528 | const char * | |
1529 | ofproto_port_open_type(const char *datapath_type, const char *port_type) | |
1530 | { | |
1531 | const struct ofproto_class *class; | |
1532 | ||
1533 | datapath_type = ofproto_normalize_type(datapath_type); | |
1534 | class = ofproto_class_find__(datapath_type); | |
1535 | if (!class) { | |
1536 | return port_type; | |
1537 | } | |
1538 | ||
1539 | return (class->port_open_type | |
1540 | ? class->port_open_type(datapath_type, port_type) | |
1541 | : port_type); | |
1542 | } | |
1543 | ||
81816a5f JP |
1544 | /* Attempts to add 'netdev' as a port on 'ofproto'. If 'ofp_portp' is |
1545 | * non-null and '*ofp_portp' is not OFPP_NONE, attempts to use that as | |
1546 | * the port's OpenFlow port number. | |
1547 | * | |
1548 | * If successful, returns 0 and sets '*ofp_portp' to the new port's | |
1549 | * OpenFlow port number (if 'ofp_portp' is non-null). On failure, | |
1550 | * returns a positive errno value and sets '*ofp_portp' to OFPP_NONE (if | |
1551 | * 'ofp_portp' is non-null). */ | |
b5827b24 BP |
1552 | int |
1553 | ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev, | |
4e022ec0 | 1554 | ofp_port_t *ofp_portp) |
b5827b24 | 1555 | { |
4e022ec0 | 1556 | ofp_port_t ofp_port = ofp_portp ? *ofp_portp : OFPP_NONE; |
3a6ccc8c BP |
1557 | int error; |
1558 | ||
e1b1d06a | 1559 | error = ofproto->ofproto_class->port_add(ofproto, netdev); |
1fa24dea | 1560 | if (!error) { |
e1b1d06a JP |
1561 | const char *netdev_name = netdev_get_name(netdev); |
1562 | ||
4e022ec0 AW |
1563 | simap_put(&ofproto->ofp_requests, netdev_name, |
1564 | ofp_to_u16(ofp_port)); | |
e1b1d06a | 1565 | update_port(ofproto, netdev_name); |
1fa24dea | 1566 | } |
b5827b24 | 1567 | if (ofp_portp) { |
e1b1d06a JP |
1568 | struct ofproto_port ofproto_port; |
1569 | ||
1570 | ofproto_port_query_by_name(ofproto, netdev_get_name(netdev), | |
1571 | &ofproto_port); | |
1572 | *ofp_portp = error ? OFPP_NONE : ofproto_port.ofp_port; | |
1573 | ofproto_port_destroy(&ofproto_port); | |
3a6ccc8c BP |
1574 | } |
1575 | return error; | |
1576 | } | |
1577 | ||
b5827b24 BP |
1578 | /* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and |
1579 | * initializes '*port' appropriately; on failure, returns a positive errno | |
1580 | * value. | |
1581 | * | |
abe529af | 1582 | * The caller owns the data in 'ofproto_port' and must free it with |
b5827b24 BP |
1583 | * ofproto_port_destroy() when it is no longer needed. */ |
1584 | int | |
1585 | ofproto_port_query_by_name(const struct ofproto *ofproto, const char *devname, | |
1586 | struct ofproto_port *port) | |
a4e2e1f2 | 1587 | { |
b5827b24 BP |
1588 | int error; |
1589 | ||
abe529af BP |
1590 | error = ofproto->ofproto_class->port_query_by_name(ofproto, devname, port); |
1591 | if (error) { | |
1592 | memset(port, 0, sizeof *port); | |
b5827b24 BP |
1593 | } |
1594 | return error; | |
a4e2e1f2 EJ |
1595 | } |
1596 | ||
b5827b24 | 1597 | /* Deletes port number 'ofp_port' from the datapath for 'ofproto'. |
3a6ccc8c | 1598 | * Returns 0 if successful, otherwise a positive errno. */ |
064af421 | 1599 | int |
4e022ec0 | 1600 | ofproto_port_del(struct ofproto *ofproto, ofp_port_t ofp_port) |
064af421 | 1601 | { |
abe529af | 1602 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1264ec95 | 1603 | const char *name = ofport ? netdev_get_name(ofport->netdev) : "<unknown>"; |
e1b1d06a | 1604 | struct simap_node *ofp_request_node; |
3cf10406 | 1605 | int error; |
cdee00fd | 1606 | |
e1b1d06a JP |
1607 | ofp_request_node = simap_find(&ofproto->ofp_requests, name); |
1608 | if (ofp_request_node) { | |
1609 | simap_delete(&ofproto->ofp_requests, ofp_request_node); | |
1610 | } | |
1611 | ||
abe529af | 1612 | error = ofproto->ofproto_class->port_del(ofproto, ofp_port); |
892815f5 | 1613 | if (!error && ofport) { |
1264ec95 BP |
1614 | /* 'name' is the netdev's name and update_port() is going to close the |
1615 | * netdev. Just in case update_port() refers to 'name' after it | |
3a6ccc8c BP |
1616 | * destroys 'ofport', make a copy of it around the update_port() |
1617 | * call. */ | |
1618 | char *devname = xstrdup(name); | |
1619 | update_port(ofproto, devname); | |
1620 | free(devname); | |
3cf10406 BP |
1621 | } |
1622 | return error; | |
064af421 BP |
1623 | } |
1624 | ||
6c1491fb | 1625 | /* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and |
fa8b054f BP |
1626 | * performs the 'n_actions' actions in 'actions'. The new flow will not |
1627 | * timeout. | |
1628 | * | |
1629 | * If cls_rule->priority is in the range of priorities supported by OpenFlow | |
1630 | * (0...65535, inclusive) then the flow will be visible to OpenFlow | |
1631 | * controllers; otherwise, it will be hidden. | |
1632 | * | |
f25d0cf3 | 1633 | * The caller retains ownership of 'cls_rule' and 'ofpacts'. |
6c1491fb BP |
1634 | * |
1635 | * This is a helper function for in-band control and fail-open. */ | |
064af421 | 1636 | void |
81a76618 BP |
1637 | ofproto_add_flow(struct ofproto *ofproto, const struct match *match, |
1638 | unsigned int priority, | |
f25d0cf3 | 1639 | const struct ofpact *ofpacts, size_t ofpacts_len) |
064af421 | 1640 | { |
7ee20df1 BP |
1641 | const struct rule *rule; |
1642 | ||
0b4f2078 | 1643 | ovs_rwlock_rdlock(&ofproto->tables[0].cls.rwlock); |
81a76618 BP |
1644 | rule = rule_from_cls_rule(classifier_find_match_exactly( |
1645 | &ofproto->tables[0].cls, match, priority)); | |
0b4f2078 | 1646 | ovs_rwlock_unlock(&ofproto->tables[0].cls.rwlock); |
f25d0cf3 BP |
1647 | if (!rule || !ofpacts_equal(rule->ofpacts, rule->ofpacts_len, |
1648 | ofpacts, ofpacts_len)) { | |
a9a2da38 | 1649 | struct ofputil_flow_mod fm; |
7ee20df1 BP |
1650 | |
1651 | memset(&fm, 0, sizeof fm); | |
81a76618 BP |
1652 | fm.match = *match; |
1653 | fm.priority = priority; | |
7ee20df1 | 1654 | fm.buffer_id = UINT32_MAX; |
f25d0cf3 BP |
1655 | fm.ofpacts = xmemdup(ofpacts, ofpacts_len); |
1656 | fm.ofpacts_len = ofpacts_len; | |
7ee20df1 | 1657 | add_flow(ofproto, NULL, &fm, NULL); |
f25d0cf3 | 1658 | free(fm.ofpacts); |
7ee20df1 | 1659 | } |
064af421 BP |
1660 | } |
1661 | ||
75a75043 | 1662 | /* Executes the flow modification specified in 'fm'. Returns 0 on success, an |
90bf1e07 BP |
1663 | * OFPERR_* OpenFlow error code on failure, or OFPROTO_POSTPONE if the |
1664 | * operation cannot be initiated now but may be retried later. | |
75a75043 BP |
1665 | * |
1666 | * This is a helper function for in-band control and fail-open. */ | |
1667 | int | |
e3b56933 | 1668 | ofproto_flow_mod(struct ofproto *ofproto, struct ofputil_flow_mod *fm) |
75a75043 BP |
1669 | { |
1670 | return handle_flow_mod__(ofproto, NULL, fm, NULL); | |
1671 | } | |
1672 | ||
6c1491fb BP |
1673 | /* Searches for a rule with matching criteria exactly equal to 'target' in |
1674 | * ofproto's table 0 and, if it finds one, deletes it. | |
1675 | * | |
1676 | * This is a helper function for in-band control and fail-open. */ | |
7ee20df1 | 1677 | bool |
81a76618 BP |
1678 | ofproto_delete_flow(struct ofproto *ofproto, |
1679 | const struct match *target, unsigned int priority) | |
064af421 BP |
1680 | { |
1681 | struct rule *rule; | |
1682 | ||
0b4f2078 | 1683 | ovs_rwlock_rdlock(&ofproto->tables[0].cls.rwlock); |
81a76618 BP |
1684 | rule = rule_from_cls_rule(classifier_find_match_exactly( |
1685 | &ofproto->tables[0].cls, target, priority)); | |
0b4f2078 | 1686 | ovs_rwlock_unlock(&ofproto->tables[0].cls.rwlock); |
7ee20df1 BP |
1687 | if (!rule) { |
1688 | /* No such rule -> success. */ | |
1689 | return true; | |
1690 | } else if (rule->pending) { | |
1691 | /* An operation on the rule is already pending -> failure. | |
1692 | * Caller must retry later if it's important. */ | |
1693 | return false; | |
1694 | } else { | |
1695 | /* Initiate deletion -> success. */ | |
7024dffe | 1696 | struct ofopgroup *group = ofopgroup_create_unattached(ofproto); |
2b07c8b1 | 1697 | ofoperation_create(group, rule, OFOPERATION_DELETE, OFPRR_DELETE); |
ad3efdcb | 1698 | ovs_rwlock_wrlock(&rule->evict); |
d0918789 | 1699 | oftable_remove_rule(rule); |
254750ce | 1700 | ofproto->ofproto_class->rule_destruct(rule); |
7ee20df1 BP |
1701 | ofopgroup_submit(group); |
1702 | return true; | |
bcf84111 | 1703 | } |
5ecc9d81 | 1704 | |
142e1f5c BP |
1705 | } |
1706 | ||
7ee20df1 BP |
1707 | /* Starts the process of deleting all of the flows from all of ofproto's flow |
1708 | * tables and then reintroducing the flows required by in-band control and | |
1709 | * fail-open. The process will complete in a later call to ofproto_run(). */ | |
142e1f5c BP |
1710 | void |
1711 | ofproto_flush_flows(struct ofproto *ofproto) | |
1712 | { | |
7ee20df1 BP |
1713 | COVERAGE_INC(ofproto_flush); |
1714 | ofproto->state = S_FLUSH; | |
064af421 BP |
1715 | } |
1716 | \f | |
1717 | static void | |
1718 | reinit_ports(struct ofproto *p) | |
1719 | { | |
abe529af | 1720 | struct ofproto_port_dump dump; |
b3c01ed3 | 1721 | struct sset devnames; |
064af421 | 1722 | struct ofport *ofport; |
abe529af | 1723 | struct ofproto_port ofproto_port; |
b3c01ed3 | 1724 | const char *devname; |
064af421 | 1725 | |
898bf89d JP |
1726 | COVERAGE_INC(ofproto_reinit_ports); |
1727 | ||
b3c01ed3 | 1728 | sset_init(&devnames); |
4e8e4213 | 1729 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { |
1264ec95 | 1730 | sset_add(&devnames, netdev_get_name(ofport->netdev)); |
064af421 | 1731 | } |
abe529af BP |
1732 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { |
1733 | sset_add(&devnames, ofproto_port.name); | |
064af421 | 1734 | } |
064af421 | 1735 | |
b3c01ed3 BP |
1736 | SSET_FOR_EACH (devname, &devnames) { |
1737 | update_port(p, devname); | |
064af421 | 1738 | } |
b3c01ed3 | 1739 | sset_destroy(&devnames); |
064af421 BP |
1740 | } |
1741 | ||
4e022ec0 | 1742 | static ofp_port_t |
e1b1d06a JP |
1743 | alloc_ofp_port(struct ofproto *ofproto, const char *netdev_name) |
1744 | { | |
4e022ec0 AW |
1745 | uint16_t max_ports = ofp_to_u16(ofproto->max_ports); |
1746 | uint16_t port_idx; | |
e1b1d06a | 1747 | |
4e022ec0 AW |
1748 | port_idx = simap_get(&ofproto->ofp_requests, netdev_name); |
1749 | if (!port_idx) { | |
1750 | port_idx = UINT16_MAX; | |
1751 | } | |
1752 | ||
1753 | if (port_idx >= max_ports | |
1754 | || bitmap_is_set(ofproto->ofp_port_ids, port_idx)) { | |
1755 | uint16_t end_port_no = ofp_to_u16(ofproto->alloc_port_no); | |
1756 | uint16_t alloc_port_no = end_port_no; | |
e1b1d06a | 1757 | |
e1b1d06a JP |
1758 | /* Search for a free OpenFlow port number. We try not to |
1759 | * immediately reuse them to prevent problems due to old | |
1760 | * flows. */ | |
6033d9d9 | 1761 | for (;;) { |
4e022ec0 AW |
1762 | if (++alloc_port_no >= max_ports) { |
1763 | alloc_port_no = 0; | |
6033d9d9 | 1764 | } |
4e022ec0 AW |
1765 | if (!bitmap_is_set(ofproto->ofp_port_ids, alloc_port_no)) { |
1766 | port_idx = alloc_port_no; | |
1767 | ofproto->alloc_port_no = u16_to_ofp(alloc_port_no); | |
6033d9d9 | 1768 | break; |
e1b1d06a | 1769 | } |
4e022ec0 | 1770 | if (alloc_port_no == end_port_no) { |
6033d9d9 | 1771 | return OFPP_NONE; |
e1b1d06a JP |
1772 | } |
1773 | } | |
1774 | } | |
4e022ec0 AW |
1775 | bitmap_set1(ofproto->ofp_port_ids, port_idx); |
1776 | return u16_to_ofp(port_idx); | |
e1b1d06a JP |
1777 | } |
1778 | ||
1779 | static void | |
4e022ec0 | 1780 | dealloc_ofp_port(const struct ofproto *ofproto, ofp_port_t ofp_port) |
e1b1d06a | 1781 | { |
4e022ec0 AW |
1782 | if (ofp_to_u16(ofp_port) < ofp_to_u16(ofproto->max_ports)) { |
1783 | bitmap_set0(ofproto->ofp_port_ids, ofp_to_u16(ofp_port)); | |
40fa9417 | 1784 | } |
e1b1d06a JP |
1785 | } |
1786 | ||
fbfa2911 BP |
1787 | /* Opens and returns a netdev for 'ofproto_port' in 'ofproto', or a null |
1788 | * pointer if the netdev cannot be opened. On success, also fills in | |
1789 | * 'opp'. */ | |
b33951b8 | 1790 | static struct netdev * |
e1b1d06a JP |
1791 | ofport_open(struct ofproto *ofproto, |
1792 | struct ofproto_port *ofproto_port, | |
9e1fd49b | 1793 | struct ofputil_phy_port *pp) |
064af421 BP |
1794 | { |
1795 | enum netdev_flags flags; | |
064af421 | 1796 | struct netdev *netdev; |
064af421 BP |
1797 | int error; |
1798 | ||
18812dff | 1799 | error = netdev_open(ofproto_port->name, ofproto_port->type, &netdev); |
064af421 | 1800 | if (error) { |
fbfa2911 | 1801 | VLOG_WARN_RL(&rl, "%s: ignoring port %s (%"PRIu16") because netdev %s " |
064af421 | 1802 | "cannot be opened (%s)", |
fbfa2911 | 1803 | ofproto->name, |
abe529af | 1804 | ofproto_port->name, ofproto_port->ofp_port, |
10a89ef0 | 1805 | ofproto_port->name, ovs_strerror(error)); |
064af421 BP |
1806 | return NULL; |
1807 | } | |
1808 | ||
e1b1d06a JP |
1809 | if (ofproto_port->ofp_port == OFPP_NONE) { |
1810 | if (!strcmp(ofproto->name, ofproto_port->name)) { | |
1811 | ofproto_port->ofp_port = OFPP_LOCAL; | |
1812 | } else { | |
1813 | ofproto_port->ofp_port = alloc_ofp_port(ofproto, | |
1814 | ofproto_port->name); | |
1815 | } | |
1816 | } | |
9e1fd49b BP |
1817 | pp->port_no = ofproto_port->ofp_port; |
1818 | netdev_get_etheraddr(netdev, pp->hw_addr); | |
1819 | ovs_strlcpy(pp->name, ofproto_port->name, sizeof pp->name); | |
064af421 | 1820 | netdev_get_flags(netdev, &flags); |
9e1fd49b BP |
1821 | pp->config = flags & NETDEV_UP ? 0 : OFPUTIL_PC_PORT_DOWN; |
1822 | pp->state = netdev_get_carrier(netdev) ? 0 : OFPUTIL_PS_LINK_DOWN; | |
1823 | netdev_get_features(netdev, &pp->curr, &pp->advertised, | |
1824 | &pp->supported, &pp->peer); | |
d02a5f8e BP |
1825 | pp->curr_speed = netdev_features_to_bps(pp->curr, 0); |
1826 | pp->max_speed = netdev_features_to_bps(pp->supported, 0); | |
118c4676 | 1827 | |
b33951b8 | 1828 | return netdev; |
064af421 BP |
1829 | } |
1830 | ||
b33951b8 | 1831 | /* Returns true if most fields of 'a' and 'b' are equal. Differences in name, |
9e1fd49b | 1832 | * port number, and 'config' bits other than OFPUTIL_PS_LINK_DOWN are |
b33951b8 BP |
1833 | * disregarded. */ |
1834 | static bool | |
9e1fd49b BP |
1835 | ofport_equal(const struct ofputil_phy_port *a, |
1836 | const struct ofputil_phy_port *b) | |
064af421 | 1837 | { |
9e1fd49b | 1838 | return (eth_addr_equals(a->hw_addr, b->hw_addr) |
064af421 | 1839 | && a->state == b->state |
9e1fd49b | 1840 | && !((a->config ^ b->config) & OFPUTIL_PC_PORT_DOWN) |
064af421 BP |
1841 | && a->curr == b->curr |
1842 | && a->advertised == b->advertised | |
1843 | && a->supported == b->supported | |
9e1fd49b BP |
1844 | && a->peer == b->peer |
1845 | && a->curr_speed == b->curr_speed | |
1846 | && a->max_speed == b->max_speed); | |
064af421 BP |
1847 | } |
1848 | ||
b33951b8 BP |
1849 | /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'. |
1850 | * The caller must ensure that 'p' does not have a conflicting ofport (that is, | |
1851 | * one with the same name or port number). */ | |
064af421 | 1852 | static void |
b33951b8 | 1853 | ofport_install(struct ofproto *p, |
9e1fd49b | 1854 | struct netdev *netdev, const struct ofputil_phy_port *pp) |
064af421 | 1855 | { |
b33951b8 BP |
1856 | const char *netdev_name = netdev_get_name(netdev); |
1857 | struct ofport *ofport; | |
abe529af | 1858 | int error; |
72b06300 | 1859 | |
b33951b8 | 1860 | /* Create ofport. */ |
abe529af BP |
1861 | ofport = p->ofproto_class->port_alloc(); |
1862 | if (!ofport) { | |
1863 | error = ENOMEM; | |
1864 | goto error; | |
1865 | } | |
0f7d71a5 | 1866 | ofport->ofproto = p; |
b33951b8 | 1867 | ofport->netdev = netdev; |
031d8bff | 1868 | ofport->change_seq = netdev_change_seq(netdev); |
9e1fd49b BP |
1869 | ofport->pp = *pp; |
1870 | ofport->ofp_port = pp->port_no; | |
65e0be10 | 1871 | ofport->created = time_msec(); |
b33951b8 BP |
1872 | |
1873 | /* Add port to 'p'. */ | |
4e022ec0 | 1874 | hmap_insert(&p->ports, &ofport->hmap_node, |
f9c0c3ec | 1875 | hash_ofp_port(ofport->ofp_port)); |
72b06300 | 1876 | shash_add(&p->port_by_name, netdev_name, ofport); |
abe529af | 1877 | |
ada3428f | 1878 | update_mtu(p, ofport); |
9197df76 | 1879 | |
abe529af BP |
1880 | /* Let the ofproto_class initialize its private data. */ |
1881 | error = p->ofproto_class->port_construct(ofport); | |
1882 | if (error) { | |
1883 | goto error; | |
1884 | } | |
9e1fd49b | 1885 | connmgr_send_port_status(p->connmgr, pp, OFPPR_ADD); |
abe529af BP |
1886 | return; |
1887 | ||
1888 | error: | |
1889 | VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)", | |
10a89ef0 | 1890 | p->name, netdev_name, ovs_strerror(error)); |
abe529af BP |
1891 | if (ofport) { |
1892 | ofport_destroy__(ofport); | |
1893 | } else { | |
1894 | netdev_close(netdev); | |
72b06300 | 1895 | } |
064af421 BP |
1896 | } |
1897 | ||
b33951b8 | 1898 | /* Removes 'ofport' from 'p' and destroys it. */ |
064af421 | 1899 | static void |
0f7d71a5 | 1900 | ofport_remove(struct ofport *ofport) |
064af421 | 1901 | { |
9e1fd49b | 1902 | connmgr_send_port_status(ofport->ofproto->connmgr, &ofport->pp, |
fa066f01 | 1903 | OFPPR_DELETE); |
abe529af | 1904 | ofport_destroy(ofport); |
b33951b8 BP |
1905 | } |
1906 | ||
1907 | /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and | |
1908 | * destroys it. */ | |
1909 | static void | |
1910 | ofport_remove_with_name(struct ofproto *ofproto, const char *name) | |
1911 | { | |
1912 | struct ofport *port = shash_find_data(&ofproto->port_by_name, name); | |
1913 | if (port) { | |
0f7d71a5 | 1914 | ofport_remove(port); |
b33951b8 BP |
1915 | } |
1916 | } | |
1917 | ||
9e1fd49b | 1918 | /* Updates 'port' with new 'pp' description. |
b33951b8 BP |
1919 | * |
1920 | * Does not handle a name or port number change. The caller must implement | |
1921 | * such a change as a delete followed by an add. */ | |
1922 | static void | |
9e1fd49b | 1923 | ofport_modified(struct ofport *port, struct ofputil_phy_port *pp) |
b33951b8 | 1924 | { |
9e1fd49b BP |
1925 | memcpy(port->pp.hw_addr, pp->hw_addr, ETH_ADDR_LEN); |
1926 | port->pp.config = ((port->pp.config & ~OFPUTIL_PC_PORT_DOWN) | |
1927 | | (pp->config & OFPUTIL_PC_PORT_DOWN)); | |
1928 | port->pp.state = pp->state; | |
1929 | port->pp.curr = pp->curr; | |
1930 | port->pp.advertised = pp->advertised; | |
1931 | port->pp.supported = pp->supported; | |
1932 | port->pp.peer = pp->peer; | |
1933 | port->pp.curr_speed = pp->curr_speed; | |
1934 | port->pp.max_speed = pp->max_speed; | |
b33951b8 | 1935 | |
9e1fd49b | 1936 | connmgr_send_port_status(port->ofproto->connmgr, &port->pp, OFPPR_MODIFY); |
064af421 BP |
1937 | } |
1938 | ||
5a2dfd47 JP |
1939 | /* Update OpenFlow 'state' in 'port' and notify controller. */ |
1940 | void | |
9e1fd49b | 1941 | ofproto_port_set_state(struct ofport *port, enum ofputil_port_state state) |
5a2dfd47 | 1942 | { |
9e1fd49b BP |
1943 | if (port->pp.state != state) { |
1944 | port->pp.state = state; | |
1945 | connmgr_send_port_status(port->ofproto->connmgr, &port->pp, | |
5a2dfd47 JP |
1946 | OFPPR_MODIFY); |
1947 | } | |
1948 | } | |
1949 | ||
abe529af | 1950 | void |
4e022ec0 | 1951 | ofproto_port_unregister(struct ofproto *ofproto, ofp_port_t ofp_port) |
e7934396 | 1952 | { |
abe529af BP |
1953 | struct ofport *port = ofproto_get_port(ofproto, ofp_port); |
1954 | if (port) { | |
52a90c29 BP |
1955 | if (port->ofproto->ofproto_class->set_realdev) { |
1956 | port->ofproto->ofproto_class->set_realdev(port, 0, 0); | |
1957 | } | |
b308140a JP |
1958 | if (port->ofproto->ofproto_class->set_stp_port) { |
1959 | port->ofproto->ofproto_class->set_stp_port(port, NULL); | |
1960 | } | |
abe529af | 1961 | if (port->ofproto->ofproto_class->set_cfm) { |
a5610457 | 1962 | port->ofproto->ofproto_class->set_cfm(port, NULL); |
abe529af BP |
1963 | } |
1964 | if (port->ofproto->ofproto_class->bundle_remove) { | |
1965 | port->ofproto->ofproto_class->bundle_remove(port); | |
e7934396 BP |
1966 | } |
1967 | } | |
1968 | } | |
1969 | ||
1970 | static void | |
abe529af | 1971 | ofport_destroy__(struct ofport *port) |
e7934396 | 1972 | { |
abe529af BP |
1973 | struct ofproto *ofproto = port->ofproto; |
1974 | const char *name = netdev_get_name(port->netdev); | |
fa066f01 | 1975 | |
abe529af BP |
1976 | hmap_remove(&ofproto->ports, &port->hmap_node); |
1977 | shash_delete(&ofproto->port_by_name, | |
1978 | shash_find(&ofproto->port_by_name, name)); | |
fa066f01 | 1979 | |
abe529af BP |
1980 | netdev_close(port->netdev); |
1981 | ofproto->ofproto_class->port_dealloc(port); | |
e7934396 BP |
1982 | } |
1983 | ||
064af421 | 1984 | static void |
abe529af | 1985 | ofport_destroy(struct ofport *port) |
064af421 | 1986 | { |
fa066f01 | 1987 | if (port) { |
e1b1d06a | 1988 | dealloc_ofp_port(port->ofproto, port->ofp_port); |
abe529af BP |
1989 | port->ofproto->ofproto_class->port_destruct(port); |
1990 | ofport_destroy__(port); | |
1991 | } | |
064af421 BP |
1992 | } |
1993 | ||
abe529af | 1994 | struct ofport * |
4e022ec0 | 1995 | ofproto_get_port(const struct ofproto *ofproto, ofp_port_t ofp_port) |
ca0f572c BP |
1996 | { |
1997 | struct ofport *port; | |
1998 | ||
f9c0c3ec | 1999 | HMAP_FOR_EACH_IN_BUCKET (port, hmap_node, hash_ofp_port(ofp_port), |
4e022ec0 | 2000 | &ofproto->ports) { |
abe529af | 2001 | if (port->ofp_port == ofp_port) { |
ca0f572c BP |
2002 | return port; |
2003 | } | |
2004 | } | |
2005 | return NULL; | |
2006 | } | |
2007 | ||
6527c598 PS |
2008 | int |
2009 | ofproto_port_get_stats(const struct ofport *port, struct netdev_stats *stats) | |
2010 | { | |
2011 | struct ofproto *ofproto = port->ofproto; | |
2012 | int error; | |
2013 | ||
2014 | if (ofproto->ofproto_class->port_get_stats) { | |
2015 | error = ofproto->ofproto_class->port_get_stats(port, stats); | |
2016 | } else { | |
2017 | error = EOPNOTSUPP; | |
2018 | } | |
2019 | ||
2020 | return error; | |
2021 | } | |
2022 | ||
064af421 | 2023 | static void |
b33951b8 | 2024 | update_port(struct ofproto *ofproto, const char *name) |
064af421 | 2025 | { |
abe529af | 2026 | struct ofproto_port ofproto_port; |
9e1fd49b | 2027 | struct ofputil_phy_port pp; |
b33951b8 BP |
2028 | struct netdev *netdev; |
2029 | struct ofport *port; | |
064af421 BP |
2030 | |
2031 | COVERAGE_INC(ofproto_update_port); | |
c874dc6d | 2032 | |
b33951b8 | 2033 | /* Fetch 'name''s location and properties from the datapath. */ |
abe529af | 2034 | netdev = (!ofproto_port_query_by_name(ofproto, name, &ofproto_port) |
fbfa2911 | 2035 | ? ofport_open(ofproto, &ofproto_port, &pp) |
b33951b8 | 2036 | : NULL); |
4e022ec0 | 2037 | |
b33951b8 | 2038 | if (netdev) { |
abe529af | 2039 | port = ofproto_get_port(ofproto, ofproto_port.ofp_port); |
b33951b8 | 2040 | if (port && !strcmp(netdev_get_name(port->netdev), name)) { |
e65942a0 BP |
2041 | struct netdev *old_netdev = port->netdev; |
2042 | ||
b33951b8 | 2043 | /* 'name' hasn't changed location. Any properties changed? */ |
9e1fd49b BP |
2044 | if (!ofport_equal(&port->pp, &pp)) { |
2045 | ofport_modified(port, &pp); | |
abe529af BP |
2046 | } |
2047 | ||
ada3428f | 2048 | update_mtu(ofproto, port); |
9197df76 | 2049 | |
e65942a0 BP |
2050 | /* Install the newly opened netdev in case it has changed. |
2051 | * Don't close the old netdev yet in case port_modified has to | |
2052 | * remove a retained reference to it.*/ | |
abe529af | 2053 | port->netdev = netdev; |
031d8bff | 2054 | port->change_seq = netdev_change_seq(netdev); |
abe529af BP |
2055 | |
2056 | if (port->ofproto->ofproto_class->port_modified) { | |
2057 | port->ofproto->ofproto_class->port_modified(port); | |
b33951b8 | 2058 | } |
e65942a0 BP |
2059 | |
2060 | netdev_close(old_netdev); | |
b33951b8 BP |
2061 | } else { |
2062 | /* If 'port' is nonnull then its name differs from 'name' and thus | |
2063 | * we should delete it. If we think there's a port named 'name' | |
2064 | * then its port number must be wrong now so delete it too. */ | |
2065 | if (port) { | |
0f7d71a5 | 2066 | ofport_remove(port); |
b33951b8 BP |
2067 | } |
2068 | ofport_remove_with_name(ofproto, name); | |
9e1fd49b | 2069 | ofport_install(ofproto, netdev, &pp); |
c874dc6d | 2070 | } |
b33951b8 BP |
2071 | } else { |
2072 | /* Any port named 'name' is gone now. */ | |
2073 | ofport_remove_with_name(ofproto, name); | |
c874dc6d | 2074 | } |
abe529af | 2075 | ofproto_port_destroy(&ofproto_port); |
064af421 BP |
2076 | } |
2077 | ||
2078 | static int | |
2079 | init_ports(struct ofproto *p) | |
2080 | { | |
abe529af BP |
2081 | struct ofproto_port_dump dump; |
2082 | struct ofproto_port ofproto_port; | |
e1b1d06a | 2083 | struct shash_node *node, *next; |
abe529af BP |
2084 | |
2085 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { | |
e1b1d06a JP |
2086 | const char *name = ofproto_port.name; |
2087 | ||
2088 | if (shash_find(&p->port_by_name, name)) { | |
fbfa2911 | 2089 | VLOG_WARN_RL(&rl, "%s: ignoring duplicate device %s in datapath", |
e1b1d06a | 2090 | p->name, name); |
abe529af | 2091 | } else { |
9e1fd49b | 2092 | struct ofputil_phy_port pp; |
b33951b8 BP |
2093 | struct netdev *netdev; |
2094 | ||
e1b1d06a JP |
2095 | /* Check if an OpenFlow port number had been requested. */ |
2096 | node = shash_find(&init_ofp_ports, name); | |
2097 | if (node) { | |
2098 | const struct iface_hint *iface_hint = node->data; | |
4e022ec0 AW |
2099 | simap_put(&p->ofp_requests, name, |
2100 | ofp_to_u16(iface_hint->ofp_port)); | |
e1b1d06a JP |
2101 | } |
2102 | ||
fbfa2911 | 2103 | netdev = ofport_open(p, &ofproto_port, &pp); |
b33951b8 | 2104 | if (netdev) { |
9e1fd49b | 2105 | ofport_install(p, netdev, &pp); |
064af421 BP |
2106 | } |
2107 | } | |
2108 | } | |
b0ec0f27 | 2109 | |
e1b1d06a | 2110 | SHASH_FOR_EACH_SAFE(node, next, &init_ofp_ports) { |
4f9e08a5 | 2111 | struct iface_hint *iface_hint = node->data; |
e1b1d06a JP |
2112 | |
2113 | if (!strcmp(iface_hint->br_name, p->name)) { | |
2114 | free(iface_hint->br_name); | |
2115 | free(iface_hint->br_type); | |
4f9e08a5 | 2116 | free(iface_hint); |
e1b1d06a JP |
2117 | shash_delete(&init_ofp_ports, node); |
2118 | } | |
2119 | } | |
2120 | ||
064af421 BP |
2121 | return 0; |
2122 | } | |
9197df76 JP |
2123 | |
2124 | /* Find the minimum MTU of all non-datapath devices attached to 'p'. | |
2125 | * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */ | |
2126 | static int | |
2127 | find_min_mtu(struct ofproto *p) | |
2128 | { | |
2129 | struct ofport *ofport; | |
2130 | int mtu = 0; | |
2131 | ||
2132 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2133 | struct netdev *netdev = ofport->netdev; | |
2134 | int dev_mtu; | |
2135 | ||
2136 | /* Skip any internal ports, since that's what we're trying to | |
2137 | * set. */ | |
2138 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
2139 | continue; | |
2140 | } | |
2141 | ||
2142 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2143 | continue; | |
2144 | } | |
2145 | if (!mtu || dev_mtu < mtu) { | |
2146 | mtu = dev_mtu; | |
2147 | } | |
2148 | } | |
2149 | ||
2150 | return mtu ? mtu: ETH_PAYLOAD_MAX; | |
2151 | } | |
2152 | ||
ada3428f PS |
2153 | /* Update MTU of all datapath devices on 'p' to the minimum of the |
2154 | * non-datapath ports in event of 'port' added or changed. */ | |
9197df76 | 2155 | static void |
ada3428f | 2156 | update_mtu(struct ofproto *p, struct ofport *port) |
9197df76 JP |
2157 | { |
2158 | struct ofport *ofport; | |
ada3428f PS |
2159 | struct netdev *netdev = port->netdev; |
2160 | int dev_mtu, old_min; | |
2161 | ||
2162 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2163 | port->mtu = 0; | |
2164 | return; | |
2165 | } | |
2166 | if (!strcmp(netdev_get_type(port->netdev), "internal")) { | |
2167 | if (dev_mtu > p->min_mtu) { | |
2168 | if (!netdev_set_mtu(port->netdev, p->min_mtu)) { | |
2169 | dev_mtu = p->min_mtu; | |
2170 | } | |
2171 | } | |
2172 | port->mtu = dev_mtu; | |
2173 | return; | |
2174 | } | |
2175 | ||
2176 | /* For non-internal port find new min mtu. */ | |
2177 | old_min = p->min_mtu; | |
2178 | port->mtu = dev_mtu; | |
2179 | p->min_mtu = find_min_mtu(p); | |
2180 | if (p->min_mtu == old_min) { | |
2181 | return; | |
2182 | } | |
9197df76 JP |
2183 | |
2184 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2185 | struct netdev *netdev = ofport->netdev; | |
2186 | ||
2187 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
ada3428f PS |
2188 | if (!netdev_set_mtu(netdev, p->min_mtu)) { |
2189 | ofport->mtu = p->min_mtu; | |
2190 | } | |
9197df76 JP |
2191 | } |
2192 | } | |
2193 | } | |
064af421 | 2194 | \f |
064af421 | 2195 | static void |
abe529af | 2196 | ofproto_rule_destroy__(struct rule *rule) |
064af421 | 2197 | { |
1eae3d33 | 2198 | if (rule) { |
48d28ac1 | 2199 | cls_rule_destroy(&rule->cr); |
f25d0cf3 | 2200 | free(rule->ofpacts); |
a3779dbc | 2201 | ovs_mutex_destroy(&rule->timeout_mutex); |
ad3efdcb | 2202 | ovs_rwlock_destroy(&rule->evict); |
1eae3d33 BP |
2203 | rule->ofproto->ofproto_class->rule_dealloc(rule); |
2204 | } | |
064af421 BP |
2205 | } |
2206 | ||
7ee20df1 BP |
2207 | /* This function allows an ofproto implementation to destroy any rules that |
2208 | * remain when its ->destruct() function is called. The caller must have | |
2209 | * already uninitialized any derived members of 'rule' (step 5 described in the | |
5bee6e26 JP |
2210 | * large comment in ofproto/ofproto-provider.h titled "Life Cycle"). |
2211 | * This function implements steps 6 and 7. | |
7ee20df1 BP |
2212 | * |
2213 | * This function should only be called from an ofproto implementation's | |
2214 | * ->destruct() function. It is not suitable elsewhere. */ | |
abe529af | 2215 | void |
0b4f2078 EJ |
2216 | ofproto_rule_destroy(struct ofproto *ofproto, struct classifier *cls, |
2217 | struct rule *rule) OVS_REQ_WRLOCK(cls->rwlock) | |
064af421 | 2218 | { |
cb22974d | 2219 | ovs_assert(!rule->pending); |
ad3efdcb EJ |
2220 | if (!ovs_rwlock_trywrlock(&rule->evict)) { |
2221 | oftable_remove_rule__(ofproto, cls, rule); | |
2222 | } else { | |
2223 | NOT_REACHED(); | |
2224 | } | |
7ee20df1 | 2225 | ofproto_rule_destroy__(rule); |
064af421 BP |
2226 | } |
2227 | ||
bcf84111 | 2228 | /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action |
f25d0cf3 | 2229 | * that outputs to 'port' (output to OFPP_FLOOD and OFPP_ALL doesn't count). */ |
2b07c8b1 | 2230 | bool |
4e022ec0 | 2231 | ofproto_rule_has_out_port(const struct rule *rule, ofp_port_t port) |
064af421 | 2232 | { |
7f05e7ab | 2233 | return (port == OFPP_ANY |
f25d0cf3 | 2234 | || ofpacts_output_to_port(rule->ofpacts, rule->ofpacts_len, port)); |
064af421 BP |
2235 | } |
2236 | ||
2b07c8b1 BP |
2237 | /* Returns true if a rule related to 'op' has an OpenFlow OFPAT_OUTPUT or |
2238 | * OFPAT_ENQUEUE action that outputs to 'out_port'. */ | |
2239 | bool | |
4e022ec0 | 2240 | ofoperation_has_out_port(const struct ofoperation *op, ofp_port_t out_port) |
2b07c8b1 BP |
2241 | { |
2242 | if (ofproto_rule_has_out_port(op->rule, out_port)) { | |
2243 | return true; | |
2244 | } | |
2245 | ||
2246 | switch (op->type) { | |
2247 | case OFOPERATION_ADD: | |
2248 | return op->victim && ofproto_rule_has_out_port(op->victim, out_port); | |
2249 | ||
2250 | case OFOPERATION_DELETE: | |
2251 | return false; | |
2252 | ||
2253 | case OFOPERATION_MODIFY: | |
2254 | return ofpacts_output_to_port(op->ofpacts, op->ofpacts_len, out_port); | |
2255 | } | |
2256 | ||
2257 | NOT_REACHED(); | |
2258 | } | |
2259 | ||
bcf84111 | 2260 | /* Executes the actions indicated by 'rule' on 'packet' and credits 'rule''s |
bcf84111 | 2261 | * statistics appropriately. 'packet' must have at least sizeof(struct |
31a9e63f | 2262 | * ofp10_packet_in) bytes of headroom. |
064af421 | 2263 | * |
bcf84111 BP |
2264 | * 'packet' doesn't necessarily have to match 'rule'. 'rule' will be credited |
2265 | * with statistics for 'packet' either way. | |
2266 | * | |
2267 | * Takes ownership of 'packet'. */ | |
5bf0e941 | 2268 | static int |
4e022ec0 | 2269 | rule_execute(struct rule *rule, ofp_port_t in_port, struct ofpbuf *packet) |
eedc0097 | 2270 | { |
bcf84111 | 2271 | struct flow flow; |
4e022ec0 | 2272 | union flow_in_port in_port_; |
eedc0097 | 2273 | |
cb22974d | 2274 | ovs_assert(ofpbuf_headroom(packet) >= sizeof(struct ofp10_packet_in)); |
eedc0097 | 2275 | |
4e022ec0 AW |
2276 | in_port_.ofp_port = in_port; |
2277 | flow_extract(packet, 0, 0, NULL, &in_port_, &flow); | |
5bf0e941 | 2278 | return rule->ofproto->ofproto_class->rule_execute(rule, &flow, packet); |
350a665f BP |
2279 | } |
2280 | ||
abe529af BP |
2281 | /* Returns true if 'rule' should be hidden from the controller. |
2282 | * | |
2283 | * Rules with priority higher than UINT16_MAX are set up by ofproto itself | |
2284 | * (e.g. by in-band control) and are intentionally hidden from the | |
2285 | * controller. */ | |
2b07c8b1 BP |
2286 | bool |
2287 | ofproto_rule_is_hidden(const struct rule *rule) | |
b6c9e612 | 2288 | { |
abe529af | 2289 | return rule->cr.priority > UINT16_MAX; |
7b064a79 | 2290 | } |
5c67e4af BP |
2291 | |
2292 | static enum oftable_flags | |
2293 | rule_get_flags(const struct rule *rule) | |
2294 | { | |
2295 | return rule->ofproto->tables[rule->table_id].flags; | |
2296 | } | |
2297 | ||
2298 | static bool | |
2299 | rule_is_modifiable(const struct rule *rule) | |
2300 | { | |
2301 | return !(rule_get_flags(rule) & OFTABLE_READONLY); | |
2302 | } | |
fa066f01 | 2303 | \f |
90bf1e07 | 2304 | static enum ofperr |
d1e2cf21 | 2305 | handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2306 | { |
b0421aa2 | 2307 | ofconn_send_reply(ofconn, make_echo_reply(oh)); |
064af421 | 2308 | return 0; |
064af421 BP |
2309 | } |
2310 | ||
90bf1e07 | 2311 | static enum ofperr |
d1e2cf21 | 2312 | handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2313 | { |
64ff1d96 | 2314 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
9e1fd49b | 2315 | struct ofputil_switch_features features; |
064af421 | 2316 | struct ofport *port; |
6c1491fb | 2317 | bool arp_match_ip; |
9e1fd49b | 2318 | struct ofpbuf *b; |
c2f0373a BP |
2319 | int n_tables; |
2320 | int i; | |
064af421 | 2321 | |
9e1fd49b BP |
2322 | ofproto->ofproto_class->get_features(ofproto, &arp_match_ip, |
2323 | &features.actions); | |
cb22974d | 2324 | ovs_assert(features.actions & OFPUTIL_A_OUTPUT); /* sanity check */ |
064af421 | 2325 | |
c2f0373a BP |
2326 | /* Count only non-hidden tables in the number of tables. (Hidden tables, |
2327 | * if present, are always at the end.) */ | |
2328 | n_tables = ofproto->n_tables; | |
2329 | for (i = 0; i < ofproto->n_tables; i++) { | |
2330 | if (ofproto->tables[i].flags & OFTABLE_HIDDEN) { | |
2331 | n_tables = i; | |
2332 | break; | |
2333 | } | |
2334 | } | |
2335 | ||
9e1fd49b BP |
2336 | features.datapath_id = ofproto->datapath_id; |
2337 | features.n_buffers = pktbuf_capacity(); | |
c2f0373a | 2338 | features.n_tables = n_tables; |
9e1fd49b BP |
2339 | features.capabilities = (OFPUTIL_C_FLOW_STATS | OFPUTIL_C_TABLE_STATS | |
2340 | OFPUTIL_C_PORT_STATS | OFPUTIL_C_QUEUE_STATS); | |
6c1491fb | 2341 | if (arp_match_ip) { |
9e1fd49b | 2342 | features.capabilities |= OFPUTIL_C_ARP_MATCH_IP; |
6c1491fb | 2343 | } |
2e1ae200 JR |
2344 | /* FIXME: Fill in proper features.auxiliary_id for auxiliary connections */ |
2345 | features.auxiliary_id = 0; | |
9e1fd49b BP |
2346 | b = ofputil_encode_switch_features(&features, ofconn_get_protocol(ofconn), |
2347 | oh->xid); | |
64ff1d96 | 2348 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
9e1fd49b | 2349 | ofputil_put_switch_features_port(&port->pp, b); |
064af421 | 2350 | } |
064af421 | 2351 | |
9e1fd49b | 2352 | ofconn_send_reply(ofconn, b); |
064af421 BP |
2353 | return 0; |
2354 | } | |
064af421 | 2355 | |
90bf1e07 | 2356 | static enum ofperr |
d1e2cf21 | 2357 | handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2358 | { |
64ff1d96 | 2359 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 | 2360 | struct ofp_switch_config *osc; |
f0fd1a17 | 2361 | enum ofp_config_flags flags; |
7257b535 | 2362 | struct ofpbuf *buf; |
959a2ecd | 2363 | |
064af421 | 2364 | /* Send reply. */ |
982697a4 BP |
2365 | buf = ofpraw_alloc_reply(OFPRAW_OFPT_GET_CONFIG_REPLY, oh, 0); |
2366 | osc = ofpbuf_put_uninit(buf, sizeof *osc); | |
f0fd1a17 | 2367 | flags = ofproto->frag_handling; |
2e1ae200 JR |
2368 | /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */ |
2369 | if (oh->version < OFP13_VERSION | |
2370 | && ofconn_get_invalid_ttl_to_controller(ofconn)) { | |
f0fd1a17 PS |
2371 | flags |= OFPC_INVALID_TTL_TO_CONTROLLER; |
2372 | } | |
2373 | osc->flags = htons(flags); | |
810605a2 | 2374 | osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn)); |
b0421aa2 | 2375 | ofconn_send_reply(ofconn, buf); |
2d70a31a | 2376 | |
064af421 BP |
2377 | return 0; |
2378 | } | |
064af421 | 2379 | |
90bf1e07 | 2380 | static enum ofperr |
982697a4 | 2381 | handle_set_config(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2382 | { |
982697a4 | 2383 | const struct ofp_switch_config *osc = ofpmsg_body(oh); |
64ff1d96 | 2384 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
d1e2cf21 | 2385 | uint16_t flags = ntohs(osc->flags); |
2d70a31a | 2386 | |
7257b535 | 2387 | if (ofconn_get_type(ofconn) != OFCONN_PRIMARY |
f4f1ea7e | 2388 | || ofconn_get_role(ofconn) != OFPCR12_ROLE_SLAVE) { |
7257b535 BP |
2389 | enum ofp_config_flags cur = ofproto->frag_handling; |
2390 | enum ofp_config_flags next = flags & OFPC_FRAG_MASK; | |
2391 | ||
cb22974d | 2392 | ovs_assert((cur & OFPC_FRAG_MASK) == cur); |
7257b535 BP |
2393 | if (cur != next) { |
2394 | if (ofproto->ofproto_class->set_frag_handling(ofproto, next)) { | |
2395 | ofproto->frag_handling = next; | |
2396 | } else { | |
2397 | VLOG_WARN_RL(&rl, "%s: unsupported fragment handling mode %s", | |
2398 | ofproto->name, | |
2399 | ofputil_frag_handling_to_string(next)); | |
2400 | } | |
064af421 BP |
2401 | } |
2402 | } | |
2e1ae200 | 2403 | /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */ |
f0fd1a17 | 2404 | ofconn_set_invalid_ttl_to_controller(ofconn, |
2e1ae200 JR |
2405 | (oh->version < OFP13_VERSION |
2406 | && flags & OFPC_INVALID_TTL_TO_CONTROLLER)); | |
ebe482fd | 2407 | |
810605a2 | 2408 | ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len)); |
0ad9b732 | 2409 | |
064af421 | 2410 | return 0; |
064af421 BP |
2411 | } |
2412 | ||
9deba63b | 2413 | /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow |
90bf1e07 BP |
2414 | * error message code for the caller to propagate upward. Otherwise, returns |
2415 | * 0. | |
2416 | * | |
2417 | * The log message mentions 'msg_type'. */ | |
2418 | static enum ofperr | |
2419 | reject_slave_controller(struct ofconn *ofconn) | |
9deba63b | 2420 | { |
1ce0a5fa | 2421 | if (ofconn_get_type(ofconn) == OFCONN_PRIMARY |
f4f1ea7e | 2422 | && ofconn_get_role(ofconn) == OFPCR12_ROLE_SLAVE) { |
90bf1e07 | 2423 | return OFPERR_OFPBRC_EPERM; |
9deba63b BP |
2424 | } else { |
2425 | return 0; | |
2426 | } | |
2427 | } | |
2428 | ||
9cae45dc JR |
2429 | /* Finds the OFPACT_METER action, if any, in the 'ofpacts_len' bytes of |
2430 | * 'ofpacts'. If found, returns its meter ID; if not, returns 0. | |
2431 | * | |
2432 | * This function relies on the order of 'ofpacts' being correct (as checked by | |
2433 | * ofpacts_verify()). */ | |
2434 | static uint32_t | |
2435 | find_meter(const struct ofpact ofpacts[], size_t ofpacts_len) | |
2436 | { | |
2437 | const struct ofpact *a; | |
2438 | ||
2439 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
2440 | enum ovs_instruction_type inst; | |
2441 | ||
2442 | inst = ovs_instruction_type_from_ofpact_type(a->type); | |
2443 | if (a->type == OFPACT_METER) { | |
2444 | return ofpact_get_METER(a)->meter_id; | |
2445 | } else if (inst > OVSINST_OFPIT13_METER) { | |
2446 | break; | |
2447 | } | |
2448 | } | |
2449 | ||
2450 | return 0; | |
2451 | } | |
2452 | ||
e3b56933 JR |
2453 | /* Checks that the 'ofpacts_len' bytes of actions in 'ofpacts' are appropriate |
2454 | * for a packet with the prerequisites satisfied by 'flow' in table 'table_id'. | |
9cae45dc JR |
2455 | * 'flow' may be temporarily modified, but is restored at return. |
2456 | */ | |
2457 | static enum ofperr | |
2458 | ofproto_check_ofpacts(struct ofproto *ofproto, | |
2459 | const struct ofpact ofpacts[], size_t ofpacts_len, | |
e3b56933 | 2460 | struct flow *flow, uint8_t table_id) |
9cae45dc JR |
2461 | { |
2462 | enum ofperr error; | |
2463 | uint32_t mid; | |
2464 | ||
e3b56933 JR |
2465 | error = ofpacts_check(ofpacts, ofpacts_len, flow, ofproto->max_ports, |
2466 | table_id); | |
9cae45dc JR |
2467 | if (error) { |
2468 | return error; | |
2469 | } | |
2470 | ||
2471 | mid = find_meter(ofpacts, ofpacts_len); | |
2472 | if (mid && ofproto_get_provider_meter_id(ofproto, mid) == UINT32_MAX) { | |
2473 | return OFPERR_OFPMMFC_INVALID_METER; | |
2474 | } | |
2475 | return 0; | |
2476 | } | |
2477 | ||
90bf1e07 | 2478 | static enum ofperr |
982697a4 | 2479 | handle_packet_out(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2480 | { |
64ff1d96 | 2481 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
c6a93eb7 BP |
2482 | struct ofputil_packet_out po; |
2483 | struct ofpbuf *payload; | |
f25d0cf3 BP |
2484 | uint64_t ofpacts_stub[1024 / 8]; |
2485 | struct ofpbuf ofpacts; | |
ae412e7d | 2486 | struct flow flow; |
4e022ec0 | 2487 | union flow_in_port in_port_; |
90bf1e07 | 2488 | enum ofperr error; |
064af421 | 2489 | |
ac51afaf BP |
2490 | COVERAGE_INC(ofproto_packet_out); |
2491 | ||
76589937 | 2492 | error = reject_slave_controller(ofconn); |
9deba63b | 2493 | if (error) { |
f25d0cf3 | 2494 | goto exit; |
9deba63b BP |
2495 | } |
2496 | ||
c6a93eb7 | 2497 | /* Decode message. */ |
f25d0cf3 | 2498 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
982697a4 | 2499 | error = ofputil_decode_packet_out(&po, oh, &ofpacts); |
064af421 | 2500 | if (error) { |
f25d0cf3 | 2501 | goto exit_free_ofpacts; |
064af421 | 2502 | } |
4e022ec0 AW |
2503 | if (ofp_to_u16(po.in_port) >= ofp_to_u16(p->max_ports) |
2504 | && ofp_to_u16(po.in_port) < ofp_to_u16(OFPP_MAX)) { | |
2e1bfcb6 | 2505 | error = OFPERR_OFPBRC_BAD_PORT; |
91858960 BP |
2506 | goto exit_free_ofpacts; |
2507 | } | |
064af421 | 2508 | |
5cb7a798 | 2509 | |
ac51afaf | 2510 | /* Get payload. */ |
c6a93eb7 BP |
2511 | if (po.buffer_id != UINT32_MAX) { |
2512 | error = ofconn_pktbuf_retrieve(ofconn, po.buffer_id, &payload, NULL); | |
2513 | if (error || !payload) { | |
f25d0cf3 | 2514 | goto exit_free_ofpacts; |
064af421 | 2515 | } |
064af421 | 2516 | } else { |
c6a93eb7 BP |
2517 | payload = xmalloc(sizeof *payload); |
2518 | ofpbuf_use_const(payload, po.packet, po.packet_len); | |
e1154f71 BP |
2519 | } |
2520 | ||
548de4dd | 2521 | /* Verify actions against packet, then send packet if successful. */ |
4e022ec0 AW |
2522 | in_port_.ofp_port = po.in_port; |
2523 | flow_extract(payload, 0, 0, NULL, &in_port_, &flow); | |
e3b56933 | 2524 | error = ofproto_check_ofpacts(p, po.ofpacts, po.ofpacts_len, &flow, 0); |
548de4dd BP |
2525 | if (!error) { |
2526 | error = p->ofproto_class->packet_out(p, payload, &flow, | |
2527 | po.ofpacts, po.ofpacts_len); | |
2528 | } | |
c6a93eb7 | 2529 | ofpbuf_delete(payload); |
abe529af | 2530 | |
f25d0cf3 BP |
2531 | exit_free_ofpacts: |
2532 | ofpbuf_uninit(&ofpacts); | |
2533 | exit: | |
abe529af | 2534 | return error; |
064af421 BP |
2535 | } |
2536 | ||
2537 | static void | |
9e1fd49b BP |
2538 | update_port_config(struct ofport *port, |
2539 | enum ofputil_port_config config, | |
2540 | enum ofputil_port_config mask) | |
064af421 | 2541 | { |
9e1fd49b BP |
2542 | enum ofputil_port_config old_config = port->pp.config; |
2543 | enum ofputil_port_config toggle; | |
abe529af | 2544 | |
9e1fd49b BP |
2545 | toggle = (config ^ port->pp.config) & mask; |
2546 | if (toggle & OFPUTIL_PC_PORT_DOWN) { | |
2547 | if (config & OFPUTIL_PC_PORT_DOWN) { | |
4b609110 | 2548 | netdev_turn_flags_off(port->netdev, NETDEV_UP, NULL); |
064af421 | 2549 | } else { |
4b609110 | 2550 | netdev_turn_flags_on(port->netdev, NETDEV_UP, NULL); |
064af421 | 2551 | } |
9e1fd49b | 2552 | toggle &= ~OFPUTIL_PC_PORT_DOWN; |
064af421 | 2553 | } |
abe529af | 2554 | |
9e1fd49b BP |
2555 | port->pp.config ^= toggle; |
2556 | if (port->pp.config != old_config) { | |
abe529af | 2557 | port->ofproto->ofproto_class->port_reconfigured(port, old_config); |
064af421 BP |
2558 | } |
2559 | } | |
2560 | ||
90bf1e07 | 2561 | static enum ofperr |
d1e2cf21 | 2562 | handle_port_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2563 | { |
64ff1d96 | 2564 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
9e1fd49b | 2565 | struct ofputil_port_mod pm; |
064af421 | 2566 | struct ofport *port; |
9e1fd49b | 2567 | enum ofperr error; |
064af421 | 2568 | |
76589937 | 2569 | error = reject_slave_controller(ofconn); |
9deba63b BP |
2570 | if (error) { |
2571 | return error; | |
2572 | } | |
064af421 | 2573 | |
9e1fd49b BP |
2574 | error = ofputil_decode_port_mod(oh, &pm); |
2575 | if (error) { | |
2576 | return error; | |
2577 | } | |
2578 | ||
2579 | port = ofproto_get_port(p, pm.port_no); | |
064af421 | 2580 | if (!port) { |
90bf1e07 | 2581 | return OFPERR_OFPPMFC_BAD_PORT; |
9e1fd49b | 2582 | } else if (!eth_addr_equals(port->pp.hw_addr, pm.hw_addr)) { |
90bf1e07 | 2583 | return OFPERR_OFPPMFC_BAD_HW_ADDR; |
064af421 | 2584 | } else { |
9e1fd49b BP |
2585 | update_port_config(port, pm.config, pm.mask); |
2586 | if (pm.advertise) { | |
2587 | netdev_set_advertisements(port->netdev, pm.advertise); | |
064af421 BP |
2588 | } |
2589 | } | |
2590 | return 0; | |
2591 | } | |
2592 | ||
90bf1e07 | 2593 | static enum ofperr |
3269c562 | 2594 | handle_desc_stats_request(struct ofconn *ofconn, |
982697a4 | 2595 | const struct ofp_header *request) |
064af421 | 2596 | { |
061bfea4 BP |
2597 | static const char *default_mfr_desc = "Nicira, Inc."; |
2598 | static const char *default_hw_desc = "Open vSwitch"; | |
2599 | static const char *default_sw_desc = VERSION; | |
2600 | static const char *default_serial_desc = "None"; | |
2601 | static const char *default_dp_desc = "None"; | |
2602 | ||
64ff1d96 | 2603 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 BP |
2604 | struct ofp_desc_stats *ods; |
2605 | struct ofpbuf *msg; | |
2606 | ||
982697a4 BP |
2607 | msg = ofpraw_alloc_stats_reply(request, 0); |
2608 | ods = ofpbuf_put_zeros(msg, sizeof *ods); | |
061bfea4 BP |
2609 | ovs_strlcpy(ods->mfr_desc, p->mfr_desc ? p->mfr_desc : default_mfr_desc, |
2610 | sizeof ods->mfr_desc); | |
2611 | ovs_strlcpy(ods->hw_desc, p->hw_desc ? p->hw_desc : default_hw_desc, | |
2612 | sizeof ods->hw_desc); | |
2613 | ovs_strlcpy(ods->sw_desc, p->sw_desc ? p->sw_desc : default_sw_desc, | |
2614 | sizeof ods->sw_desc); | |
2615 | ovs_strlcpy(ods->serial_num, | |
2616 | p->serial_desc ? p->serial_desc : default_serial_desc, | |
2617 | sizeof ods->serial_num); | |
2618 | ovs_strlcpy(ods->dp_desc, p->dp_desc ? p->dp_desc : default_dp_desc, | |
2619 | sizeof ods->dp_desc); | |
b0421aa2 | 2620 | ofconn_send_reply(ofconn, msg); |
064af421 BP |
2621 | |
2622 | return 0; | |
2623 | } | |
2624 | ||
90bf1e07 | 2625 | static enum ofperr |
3269c562 | 2626 | handle_table_stats_request(struct ofconn *ofconn, |
982697a4 | 2627 | const struct ofp_header *request) |
064af421 | 2628 | { |
64ff1d96 | 2629 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
307975da | 2630 | struct ofp12_table_stats *ots; |
064af421 | 2631 | struct ofpbuf *msg; |
c2f0373a | 2632 | int n_tables; |
6c1491fb | 2633 | size_t i; |
064af421 | 2634 | |
307975da SH |
2635 | /* Set up default values. |
2636 | * | |
2637 | * ofp12_table_stats is used as a generic structure as | |
2638 | * it is able to hold all the fields for ofp10_table_stats | |
2639 | * and ofp11_table_stats (and of course itself). | |
2640 | */ | |
2641 | ots = xcalloc(p->n_tables, sizeof *ots); | |
6c1491fb BP |
2642 | for (i = 0; i < p->n_tables; i++) { |
2643 | ots[i].table_id = i; | |
35aa7a21 | 2644 | sprintf(ots[i].name, "table%zu", i); |
307975da SH |
2645 | ots[i].match = htonll(OFPXMT12_MASK); |
2646 | ots[i].wildcards = htonll(OFPXMT12_MASK); | |
e78b61f6 BP |
2647 | ots[i].write_actions = htonl(OFPAT11_OUTPUT); |
2648 | ots[i].apply_actions = htonl(OFPAT11_OUTPUT); | |
307975da SH |
2649 | ots[i].write_setfields = htonll(OFPXMT12_MASK); |
2650 | ots[i].apply_setfields = htonll(OFPXMT12_MASK); | |
2651 | ots[i].metadata_match = htonll(UINT64_MAX); | |
2652 | ots[i].metadata_write = htonll(UINT64_MAX); | |
2653 | ots[i].instructions = htonl(OFPIT11_ALL); | |
2654 | ots[i].config = htonl(OFPTC11_TABLE_MISS_MASK); | |
6c1491fb | 2655 | ots[i].max_entries = htonl(1000000); /* An arbitrary big number. */ |
0b4f2078 | 2656 | ovs_rwlock_rdlock(&p->tables[i].cls.rwlock); |
d0918789 | 2657 | ots[i].active_count = htonl(classifier_count(&p->tables[i].cls)); |
0b4f2078 | 2658 | ovs_rwlock_unlock(&p->tables[i].cls.rwlock); |
6c1491fb | 2659 | } |
064af421 | 2660 | |
6c1491fb | 2661 | p->ofproto_class->get_tables(p, ots); |
064af421 | 2662 | |
c2f0373a BP |
2663 | /* Post-process the tables, dropping hidden tables. */ |
2664 | n_tables = p->n_tables; | |
254750ce BP |
2665 | for (i = 0; i < p->n_tables; i++) { |
2666 | const struct oftable *table = &p->tables[i]; | |
2667 | ||
c2f0373a BP |
2668 | if (table->flags & OFTABLE_HIDDEN) { |
2669 | n_tables = i; | |
2670 | break; | |
2671 | } | |
2672 | ||
254750ce BP |
2673 | if (table->name) { |
2674 | ovs_strzcpy(ots[i].name, table->name, sizeof ots[i].name); | |
2675 | } | |
2676 | ||
2677 | if (table->max_flows < ntohl(ots[i].max_entries)) { | |
2678 | ots[i].max_entries = htonl(table->max_flows); | |
2679 | } | |
2680 | } | |
2681 | ||
c2f0373a | 2682 | msg = ofputil_encode_table_stats_reply(ots, n_tables, request); |
b0421aa2 | 2683 | ofconn_send_reply(ofconn, msg); |
307975da SH |
2684 | |
2685 | free(ots); | |
2686 | ||
064af421 BP |
2687 | return 0; |
2688 | } | |
2689 | ||
abaad8cf | 2690 | static void |
63f2140a | 2691 | append_port_stat(struct ofport *port, struct list *replies) |
abaad8cf | 2692 | { |
f8e4867e | 2693 | struct ofputil_port_stats ops = { .port_no = port->pp.port_no }; |
abaad8cf | 2694 | |
65e0be10 BP |
2695 | calc_duration(port->created, time_msec(), |
2696 | &ops.duration_sec, &ops.duration_nsec); | |
2697 | ||
d295e8e9 JP |
2698 | /* Intentionally ignore return value, since errors will set |
2699 | * 'stats' to all-1s, which is correct for OpenFlow, and | |
abaad8cf | 2700 | * netdev_get_stats() will log errors. */ |
f8e4867e SH |
2701 | ofproto_port_get_stats(port, &ops.stats); |
2702 | ||
2703 | ofputil_append_port_stat(replies, &ops); | |
abaad8cf JP |
2704 | } |
2705 | ||
90bf1e07 | 2706 | static enum ofperr |
63f2140a | 2707 | handle_port_stats_request(struct ofconn *ofconn, |
982697a4 | 2708 | const struct ofp_header *request) |
064af421 | 2709 | { |
64ff1d96 | 2710 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 | 2711 | struct ofport *port; |
63f2140a | 2712 | struct list replies; |
4e022ec0 | 2713 | ofp_port_t port_no; |
f8e4867e SH |
2714 | enum ofperr error; |
2715 | ||
2716 | error = ofputil_decode_port_stats_request(request, &port_no); | |
2717 | if (error) { | |
2718 | return error; | |
2719 | } | |
064af421 | 2720 | |
982697a4 | 2721 | ofpmp_init(&replies, request); |
7f05e7ab | 2722 | if (port_no != OFPP_ANY) { |
f8e4867e | 2723 | port = ofproto_get_port(p, port_no); |
abaad8cf | 2724 | if (port) { |
63f2140a | 2725 | append_port_stat(port, &replies); |
abaad8cf JP |
2726 | } |
2727 | } else { | |
4e8e4213 | 2728 | HMAP_FOR_EACH (port, hmap_node, &p->ports) { |
63f2140a | 2729 | append_port_stat(port, &replies); |
abaad8cf | 2730 | } |
064af421 BP |
2731 | } |
2732 | ||
63f2140a | 2733 | ofconn_send_replies(ofconn, &replies); |
064af421 BP |
2734 | return 0; |
2735 | } | |
2736 | ||
2be393ed JP |
2737 | static enum ofperr |
2738 | handle_port_desc_stats_request(struct ofconn *ofconn, | |
982697a4 | 2739 | const struct ofp_header *request) |
2be393ed JP |
2740 | { |
2741 | struct ofproto *p = ofconn_get_ofproto(ofconn); | |
2e3fa633 | 2742 | enum ofp_version version; |
2be393ed JP |
2743 | struct ofport *port; |
2744 | struct list replies; | |
2745 | ||
982697a4 | 2746 | ofpmp_init(&replies, request); |
2be393ed | 2747 | |
2e3fa633 | 2748 | version = ofputil_protocol_to_ofp_version(ofconn_get_protocol(ofconn)); |
2be393ed | 2749 | HMAP_FOR_EACH (port, hmap_node, &p->ports) { |
2e3fa633 | 2750 | ofputil_append_port_desc_stats_reply(version, &port->pp, &replies); |
2be393ed JP |
2751 | } |
2752 | ||
2753 | ofconn_send_replies(ofconn, &replies); | |
2754 | return 0; | |
2755 | } | |
2756 | ||
98eaac36 JR |
2757 | static uint32_t |
2758 | hash_cookie(ovs_be64 cookie) | |
2759 | { | |
2760 | return hash_2words((OVS_FORCE uint64_t)cookie >> 32, | |
2761 | (OVS_FORCE uint64_t)cookie); | |
2762 | } | |
2763 | ||
2764 | static void | |
2765 | cookies_insert(struct ofproto *ofproto, struct rule *rule) | |
2766 | { | |
2767 | hindex_insert(&ofproto->cookies, &rule->cookie_node, | |
2768 | hash_cookie(rule->flow_cookie)); | |
2769 | } | |
2770 | ||
2771 | static void | |
2772 | cookies_remove(struct ofproto *ofproto, struct rule *rule) | |
2773 | { | |
2774 | hindex_remove(&ofproto->cookies, &rule->cookie_node); | |
2775 | } | |
2776 | ||
2777 | static void | |
2778 | ofproto_rule_change_cookie(struct ofproto *ofproto, struct rule *rule, | |
2779 | ovs_be64 new_cookie) | |
2780 | { | |
2781 | if (new_cookie != rule->flow_cookie) { | |
2782 | cookies_remove(ofproto, rule); | |
2783 | ||
2784 | rule->flow_cookie = new_cookie; | |
2785 | ||
2786 | cookies_insert(ofproto, rule); | |
2787 | } | |
2788 | } | |
2789 | ||
c6ebb8fb | 2790 | static void |
65e0be10 BP |
2791 | calc_duration(long long int start, long long int now, |
2792 | uint32_t *sec, uint32_t *nsec) | |
c6ebb8fb | 2793 | { |
f27f2134 | 2794 | long long int msecs = now - start; |
588cd7b5 BP |
2795 | *sec = msecs / 1000; |
2796 | *nsec = (msecs % 1000) * (1000 * 1000); | |
2797 | } | |
2798 | ||
48266274 BP |
2799 | /* Checks whether 'table_id' is 0xff or a valid table ID in 'ofproto'. Returns |
2800 | * 0 if 'table_id' is OK, otherwise an OpenFlow error code. */ | |
90bf1e07 | 2801 | static enum ofperr |
48266274 BP |
2802 | check_table_id(const struct ofproto *ofproto, uint8_t table_id) |
2803 | { | |
2804 | return (table_id == 0xff || table_id < ofproto->n_tables | |
2805 | ? 0 | |
c22c56bd | 2806 | : OFPERR_OFPBRC_BAD_TABLE_ID); |
48266274 BP |
2807 | |
2808 | } | |
2809 | ||
5c67e4af | 2810 | static struct oftable * |
d4ce8a49 | 2811 | next_visible_table(const struct ofproto *ofproto, uint8_t table_id) |
5c67e4af BP |
2812 | { |
2813 | struct oftable *table; | |
2814 | ||
2815 | for (table = &ofproto->tables[table_id]; | |
2816 | table < &ofproto->tables[ofproto->n_tables]; | |
2817 | table++) { | |
2818 | if (!(table->flags & OFTABLE_HIDDEN)) { | |
2819 | return table; | |
2820 | } | |
2821 | } | |
2822 | ||
2823 | return NULL; | |
2824 | } | |
2825 | ||
d0918789 | 2826 | static struct oftable * |
d4ce8a49 | 2827 | first_matching_table(const struct ofproto *ofproto, uint8_t table_id) |
064af421 | 2828 | { |
6c1491fb | 2829 | if (table_id == 0xff) { |
5c67e4af | 2830 | return next_visible_table(ofproto, 0); |
6c1491fb BP |
2831 | } else if (table_id < ofproto->n_tables) { |
2832 | return &ofproto->tables[table_id]; | |
a02e5331 | 2833 | } else { |
6c1491fb | 2834 | return NULL; |
a02e5331 | 2835 | } |
064af421 BP |
2836 | } |
2837 | ||
d0918789 | 2838 | static struct oftable * |
d4ce8a49 BP |
2839 | next_matching_table(const struct ofproto *ofproto, |
2840 | const struct oftable *table, uint8_t table_id) | |
6c1491fb | 2841 | { |
5c67e4af BP |
2842 | return (table_id == 0xff |
2843 | ? next_visible_table(ofproto, (table - ofproto->tables) + 1) | |
6c1491fb BP |
2844 | : NULL); |
2845 | } | |
2846 | ||
d0918789 | 2847 | /* Assigns TABLE to each oftable, in turn, that matches TABLE_ID in OFPROTO: |
6c1491fb BP |
2848 | * |
2849 | * - If TABLE_ID is 0xff, this iterates over every classifier table in | |
5c67e4af | 2850 | * OFPROTO, skipping tables marked OFTABLE_HIDDEN. |
6c1491fb BP |
2851 | * |
2852 | * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates | |
5c67e4af BP |
2853 | * only once, for that table. (This can be used to access tables marked |
2854 | * OFTABLE_HIDDEN.) | |
6c1491fb | 2855 | * |
48266274 BP |
2856 | * - Otherwise, TABLE_ID isn't valid for OFPROTO, so the loop won't be |
2857 | * entered at all. (Perhaps you should have validated TABLE_ID with | |
2858 | * check_table_id().) | |
6c1491fb BP |
2859 | * |
2860 | * All parameters are evaluated multiple times. | |
2861 | */ | |
d0918789 BP |
2862 | #define FOR_EACH_MATCHING_TABLE(TABLE, TABLE_ID, OFPROTO) \ |
2863 | for ((TABLE) = first_matching_table(OFPROTO, TABLE_ID); \ | |
2864 | (TABLE) != NULL; \ | |
2865 | (TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID)) | |
6c1491fb | 2866 | |
9ed18e46 BP |
2867 | /* Searches 'ofproto' for rules in table 'table_id' (or in all tables, if |
2868 | * 'table_id' is 0xff) that match 'match' in the "loose" way required for | |
2869 | * OpenFlow OFPFC_MODIFY and OFPFC_DELETE requests and puts them on list | |
2870 | * 'rules'. | |
2871 | * | |
7f05e7ab | 2872 | * If 'out_port' is anything other than OFPP_ANY, then only rules that output |
9ed18e46 BP |
2873 | * to 'out_port' are included. |
2874 | * | |
2875 | * Hidden rules are always omitted. | |
2876 | * | |
2877 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 2878 | static enum ofperr |
9ed18e46 | 2879 | collect_rules_loose(struct ofproto *ofproto, uint8_t table_id, |
81a76618 | 2880 | const struct match *match, |
e729e793 | 2881 | ovs_be64 cookie, ovs_be64 cookie_mask, |
4e022ec0 | 2882 | ofp_port_t out_port, struct list *rules) |
9ed18e46 | 2883 | { |
d0918789 | 2884 | struct oftable *table; |
81a76618 | 2885 | struct cls_rule cr; |
90bf1e07 | 2886 | enum ofperr error; |
48266274 BP |
2887 | |
2888 | error = check_table_id(ofproto, table_id); | |
2889 | if (error) { | |
2890 | return error; | |
2891 | } | |
9ed18e46 BP |
2892 | |
2893 | list_init(rules); | |
81a76618 | 2894 | cls_rule_init(&cr, match, 0); |
98eaac36 JR |
2895 | |
2896 | if (cookie_mask == htonll(UINT64_MAX)) { | |
2897 | struct rule *rule; | |
2898 | ||
2899 | HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node, hash_cookie(cookie), | |
2900 | &ofproto->cookies) { | |
2901 | if (table_id != rule->table_id && table_id != 0xff) { | |
2902 | continue; | |
2903 | } | |
2904 | if (ofproto_rule_is_hidden(rule)) { | |
2905 | continue; | |
2906 | } | |
2907 | if (cls_rule_is_loose_match(&rule->cr, &cr.match)) { | |
2908 | if (rule->pending) { | |
2909 | error = OFPROTO_POSTPONE; | |
2910 | goto exit; | |
2911 | } | |
2912 | if (rule->flow_cookie == cookie /* Hash collisions possible. */ | |
2913 | && ofproto_rule_has_out_port(rule, out_port)) { | |
2914 | list_push_back(rules, &rule->ofproto_node); | |
2915 | } | |
2916 | } | |
2917 | } | |
2918 | goto exit; | |
2919 | } | |
2920 | ||
d0918789 | 2921 | FOR_EACH_MATCHING_TABLE (table, table_id, ofproto) { |
9ed18e46 BP |
2922 | struct cls_cursor cursor; |
2923 | struct rule *rule; | |
2924 | ||
0b4f2078 | 2925 | ovs_rwlock_rdlock(&table->cls.rwlock); |
81a76618 | 2926 | cls_cursor_init(&cursor, &table->cls, &cr); |
9ed18e46 | 2927 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
7ee20df1 | 2928 | if (rule->pending) { |
0b4f2078 | 2929 | ovs_rwlock_unlock(&table->cls.rwlock); |
48d28ac1 BP |
2930 | error = OFPROTO_POSTPONE; |
2931 | goto exit; | |
7ee20df1 | 2932 | } |
2b07c8b1 BP |
2933 | if (!ofproto_rule_is_hidden(rule) |
2934 | && ofproto_rule_has_out_port(rule, out_port) | |
e729e793 | 2935 | && !((rule->flow_cookie ^ cookie) & cookie_mask)) { |
9ed18e46 BP |
2936 | list_push_back(rules, &rule->ofproto_node); |
2937 | } | |
2938 | } | |
0b4f2078 | 2939 | ovs_rwlock_unlock(&table->cls.rwlock); |
9ed18e46 | 2940 | } |
48d28ac1 BP |
2941 | |
2942 | exit: | |
2943 | cls_rule_destroy(&cr); | |
2944 | return error; | |
9ed18e46 BP |
2945 | } |
2946 | ||
2947 | /* Searches 'ofproto' for rules in table 'table_id' (or in all tables, if | |
2948 | * 'table_id' is 0xff) that match 'match' in the "strict" way required for | |
2949 | * OpenFlow OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests and puts them | |
2950 | * on list 'rules'. | |
2951 | * | |
7f05e7ab | 2952 | * If 'out_port' is anything other than OFPP_ANY, then only rules that output |
9ed18e46 BP |
2953 | * to 'out_port' are included. |
2954 | * | |
2955 | * Hidden rules are always omitted. | |
2956 | * | |
2957 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 2958 | static enum ofperr |
9ed18e46 | 2959 | collect_rules_strict(struct ofproto *ofproto, uint8_t table_id, |
81a76618 | 2960 | const struct match *match, unsigned int priority, |
e729e793 | 2961 | ovs_be64 cookie, ovs_be64 cookie_mask, |
4e022ec0 | 2962 | ofp_port_t out_port, struct list *rules) |
9ed18e46 | 2963 | { |
d0918789 | 2964 | struct oftable *table; |
81a76618 | 2965 | struct cls_rule cr; |
48266274 BP |
2966 | int error; |
2967 | ||
2968 | error = check_table_id(ofproto, table_id); | |
2969 | if (error) { | |
2970 | return error; | |
2971 | } | |
9ed18e46 BP |
2972 | |
2973 | list_init(rules); | |
81a76618 | 2974 | cls_rule_init(&cr, match, priority); |
98eaac36 JR |
2975 | |
2976 | if (cookie_mask == htonll(UINT64_MAX)) { | |
2977 | struct rule *rule; | |
2978 | ||
2979 | HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node, hash_cookie(cookie), | |
2980 | &ofproto->cookies) { | |
2981 | if (table_id != rule->table_id && table_id != 0xff) { | |
2982 | continue; | |
2983 | } | |
2984 | if (ofproto_rule_is_hidden(rule)) { | |
2985 | continue; | |
2986 | } | |
2987 | if (cls_rule_equal(&rule->cr, &cr)) { | |
2988 | if (rule->pending) { | |
2989 | error = OFPROTO_POSTPONE; | |
2990 | goto exit; | |
2991 | } | |
2992 | if (rule->flow_cookie == cookie /* Hash collisions possible. */ | |
2993 | && ofproto_rule_has_out_port(rule, out_port)) { | |
2994 | list_push_back(rules, &rule->ofproto_node); | |
2995 | } | |
2996 | } | |
2997 | } | |
2998 | goto exit; | |
2999 | } | |
3000 | ||
d0918789 | 3001 | FOR_EACH_MATCHING_TABLE (table, table_id, ofproto) { |
9ed18e46 BP |
3002 | struct rule *rule; |
3003 | ||
0b4f2078 | 3004 | ovs_rwlock_rdlock(&table->cls.rwlock); |
d0918789 | 3005 | rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls, |
81a76618 | 3006 | &cr)); |
0b4f2078 | 3007 | ovs_rwlock_unlock(&table->cls.rwlock); |
9ed18e46 | 3008 | if (rule) { |
7ee20df1 | 3009 | if (rule->pending) { |
48d28ac1 BP |
3010 | error = OFPROTO_POSTPONE; |
3011 | goto exit; | |
7ee20df1 | 3012 | } |
2b07c8b1 BP |
3013 | if (!ofproto_rule_is_hidden(rule) |
3014 | && ofproto_rule_has_out_port(rule, out_port) | |
e729e793 | 3015 | && !((rule->flow_cookie ^ cookie) & cookie_mask)) { |
9ed18e46 BP |
3016 | list_push_back(rules, &rule->ofproto_node); |
3017 | } | |
3018 | } | |
3019 | } | |
48d28ac1 BP |
3020 | |
3021 | exit: | |
3022 | cls_rule_destroy(&cr); | |
9ed18e46 BP |
3023 | return 0; |
3024 | } | |
3025 | ||
f27f2134 BP |
3026 | /* Returns 'age_ms' (a duration in milliseconds), converted to seconds and |
3027 | * forced into the range of a uint16_t. */ | |
3028 | static int | |
3029 | age_secs(long long int age_ms) | |
3030 | { | |
3031 | return (age_ms < 0 ? 0 | |
3032 | : age_ms >= UINT16_MAX * 1000 ? UINT16_MAX | |
3033 | : (unsigned int) age_ms / 1000); | |
3034 | } | |
3035 | ||
90bf1e07 | 3036 | static enum ofperr |
63f2140a | 3037 | handle_flow_stats_request(struct ofconn *ofconn, |
982697a4 | 3038 | const struct ofp_header *request) |
064af421 | 3039 | { |
64ff1d96 | 3040 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 3041 | struct ofputil_flow_stats_request fsr; |
63f2140a | 3042 | struct list replies; |
9ed18e46 BP |
3043 | struct list rules; |
3044 | struct rule *rule; | |
90bf1e07 | 3045 | enum ofperr error; |
09246b99 | 3046 | |
982697a4 | 3047 | error = ofputil_decode_flow_stats_request(&fsr, request); |
09246b99 BP |
3048 | if (error) { |
3049 | return error; | |
3050 | } | |
3051 | ||
9ed18e46 | 3052 | error = collect_rules_loose(ofproto, fsr.table_id, &fsr.match, |
e729e793 | 3053 | fsr.cookie, fsr.cookie_mask, |
9ed18e46 BP |
3054 | fsr.out_port, &rules); |
3055 | if (error) { | |
3056 | return error; | |
3057 | } | |
5ecc9d81 | 3058 | |
982697a4 | 3059 | ofpmp_init(&replies, request); |
9ed18e46 | 3060 | LIST_FOR_EACH (rule, ofproto_node, &rules) { |
f27f2134 | 3061 | long long int now = time_msec(); |
9ed18e46 BP |
3062 | struct ofputil_flow_stats fs; |
3063 | ||
5cb7a798 | 3064 | minimatch_expand(&rule->cr.match, &fs.match); |
81a76618 | 3065 | fs.priority = rule->cr.priority; |
9ed18e46 BP |
3066 | fs.cookie = rule->flow_cookie; |
3067 | fs.table_id = rule->table_id; | |
65e0be10 | 3068 | calc_duration(rule->created, now, &fs.duration_sec, &fs.duration_nsec); |
f27f2134 BP |
3069 | fs.idle_age = age_secs(now - rule->used); |
3070 | fs.hard_age = age_secs(now - rule->modified); | |
9ed18e46 BP |
3071 | ofproto->ofproto_class->rule_get_stats(rule, &fs.packet_count, |
3072 | &fs.byte_count); | |
f25d0cf3 BP |
3073 | fs.ofpacts = rule->ofpacts; |
3074 | fs.ofpacts_len = rule->ofpacts_len; | |
2e1ae200 | 3075 | fs.flags = 0; |
a3779dbc EJ |
3076 | |
3077 | ovs_mutex_lock(&rule->timeout_mutex); | |
3078 | fs.idle_timeout = rule->idle_timeout; | |
3079 | fs.hard_timeout = rule->hard_timeout; | |
3080 | ovs_mutex_unlock(&rule->timeout_mutex); | |
3081 | ||
2e1ae200 JR |
3082 | if (rule->send_flow_removed) { |
3083 | fs.flags |= OFPFF_SEND_FLOW_REM; | |
3084 | /* FIXME: Implement OF 1.3 flags OFPFF13_NO_PKT_COUNTS | |
3085 | and OFPFF13_NO_BYT_COUNTS */ | |
3086 | } | |
9ed18e46 | 3087 | ofputil_append_flow_stats_reply(&fs, &replies); |
3c4486a5 | 3088 | } |
63f2140a | 3089 | ofconn_send_replies(ofconn, &replies); |
5ecc9d81 | 3090 | |
09246b99 BP |
3091 | return 0; |
3092 | } | |
3093 | ||
4f2cad2c | 3094 | static void |
3394b5b6 | 3095 | flow_stats_ds(struct rule *rule, struct ds *results) |
4f2cad2c | 3096 | { |
4f2cad2c | 3097 | uint64_t packet_count, byte_count; |
4f2cad2c | 3098 | |
abe529af BP |
3099 | rule->ofproto->ofproto_class->rule_get_stats(rule, |
3100 | &packet_count, &byte_count); | |
4f2cad2c | 3101 | |
6c1491fb BP |
3102 | if (rule->table_id != 0) { |
3103 | ds_put_format(results, "table_id=%"PRIu8", ", rule->table_id); | |
3104 | } | |
4f2cad2c JP |
3105 | ds_put_format(results, "duration=%llds, ", |
3106 | (time_msec() - rule->created) / 1000); | |
52ae00b3 | 3107 | ds_put_format(results, "priority=%u, ", rule->cr.priority); |
4f2cad2c JP |
3108 | ds_put_format(results, "n_packets=%"PRIu64", ", packet_count); |
3109 | ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count); | |
cb833cf6 | 3110 | cls_rule_format(&rule->cr, results); |
a5df0e72 | 3111 | ds_put_char(results, ','); |
aa30ae4e | 3112 | ofpacts_format(rule->ofpacts, rule->ofpacts_len, results); |
4f2cad2c JP |
3113 | ds_put_cstr(results, "\n"); |
3114 | } | |
3115 | ||
d295e8e9 | 3116 | /* Adds a pretty-printed description of all flows to 'results', including |
ee8b231c | 3117 | * hidden flows (e.g., set up by in-band control). */ |
4f2cad2c JP |
3118 | void |
3119 | ofproto_get_all_flows(struct ofproto *p, struct ds *results) | |
3120 | { | |
d0918789 | 3121 | struct oftable *table; |
6c1491fb | 3122 | |
d0918789 | 3123 | OFPROTO_FOR_EACH_TABLE (table, p) { |
6c1491fb BP |
3124 | struct cls_cursor cursor; |
3125 | struct rule *rule; | |
064af421 | 3126 | |
0b4f2078 | 3127 | ovs_rwlock_rdlock(&table->cls.rwlock); |
d0918789 | 3128 | cls_cursor_init(&cursor, &table->cls, NULL); |
6c1491fb BP |
3129 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
3130 | flow_stats_ds(rule, results); | |
3131 | } | |
0b4f2078 | 3132 | ovs_rwlock_unlock(&table->cls.rwlock); |
064af421 | 3133 | } |
064af421 BP |
3134 | } |
3135 | ||
b5827b24 BP |
3136 | /* Obtains the NetFlow engine type and engine ID for 'ofproto' into |
3137 | * '*engine_type' and '*engine_id', respectively. */ | |
3138 | void | |
3139 | ofproto_get_netflow_ids(const struct ofproto *ofproto, | |
3140 | uint8_t *engine_type, uint8_t *engine_id) | |
3141 | { | |
abe529af | 3142 | ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id); |
b5827b24 BP |
3143 | } |
3144 | ||
9a9e3786 BP |
3145 | /* Checks the status of CFM configured on 'ofp_port' within 'ofproto'. Returns |
3146 | * true if the port's CFM status was successfully stored into '*status'. | |
3147 | * Returns false if the port did not have CFM configured, in which case | |
3148 | * '*status' is indeterminate. | |
3149 | * | |
13b1b2ae | 3150 | * The caller must provide and owns '*status', and must free 'status->rmps'. */ |
9a9e3786 | 3151 | bool |
4e022ec0 | 3152 | ofproto_port_get_cfm_status(const struct ofproto *ofproto, ofp_port_t ofp_port, |
9a9e3786 | 3153 | struct ofproto_cfm_status *status) |
3967a833 MM |
3154 | { |
3155 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
9a9e3786 BP |
3156 | return (ofport |
3157 | && ofproto->ofproto_class->get_cfm_status | |
3158 | && ofproto->ofproto_class->get_cfm_status(ofport, status)); | |
3967a833 MM |
3159 | } |
3160 | ||
90bf1e07 | 3161 | static enum ofperr |
76c93b22 | 3162 | handle_aggregate_stats_request(struct ofconn *ofconn, |
982697a4 | 3163 | const struct ofp_header *oh) |
27d34fce | 3164 | { |
76c93b22 | 3165 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 3166 | struct ofputil_flow_stats_request request; |
76c93b22 | 3167 | struct ofputil_aggregate_stats stats; |
5e9d0469 | 3168 | bool unknown_packets, unknown_bytes; |
76c93b22 | 3169 | struct ofpbuf *reply; |
9ed18e46 BP |
3170 | struct list rules; |
3171 | struct rule *rule; | |
90bf1e07 | 3172 | enum ofperr error; |
27d34fce | 3173 | |
982697a4 | 3174 | error = ofputil_decode_flow_stats_request(&request, oh); |
76c93b22 BP |
3175 | if (error) { |
3176 | return error; | |
3177 | } | |
5ecc9d81 | 3178 | |
9ed18e46 | 3179 | error = collect_rules_loose(ofproto, request.table_id, &request.match, |
e729e793 | 3180 | request.cookie, request.cookie_mask, |
9ed18e46 BP |
3181 | request.out_port, &rules); |
3182 | if (error) { | |
3183 | return error; | |
3184 | } | |
3c4486a5 | 3185 | |
9ed18e46 | 3186 | memset(&stats, 0, sizeof stats); |
5e9d0469 | 3187 | unknown_packets = unknown_bytes = false; |
9ed18e46 BP |
3188 | LIST_FOR_EACH (rule, ofproto_node, &rules) { |
3189 | uint64_t packet_count; | |
3190 | uint64_t byte_count; | |
5ecc9d81 | 3191 | |
9ed18e46 BP |
3192 | ofproto->ofproto_class->rule_get_stats(rule, &packet_count, |
3193 | &byte_count); | |
5ecc9d81 | 3194 | |
5e9d0469 BP |
3195 | if (packet_count == UINT64_MAX) { |
3196 | unknown_packets = true; | |
3197 | } else { | |
3198 | stats.packet_count += packet_count; | |
3199 | } | |
3200 | ||
3201 | if (byte_count == UINT64_MAX) { | |
3202 | unknown_bytes = true; | |
3203 | } else { | |
3204 | stats.byte_count += byte_count; | |
3205 | } | |
3206 | ||
9ed18e46 | 3207 | stats.flow_count++; |
3c4486a5 | 3208 | } |
5e9d0469 BP |
3209 | if (unknown_packets) { |
3210 | stats.packet_count = UINT64_MAX; | |
3211 | } | |
3212 | if (unknown_bytes) { | |
3213 | stats.byte_count = UINT64_MAX; | |
3214 | } | |
27d34fce | 3215 | |
982697a4 | 3216 | reply = ofputil_encode_aggregate_stats_reply(&stats, oh); |
76c93b22 | 3217 | ofconn_send_reply(ofconn, reply); |
09246b99 BP |
3218 | |
3219 | return 0; | |
3220 | } | |
3221 | ||
c1c9c9c4 | 3222 | struct queue_stats_cbdata { |
ca0f572c | 3223 | struct ofport *ofport; |
63f2140a | 3224 | struct list replies; |
6dc34a0d | 3225 | long long int now; |
c1c9c9c4 BP |
3226 | }; |
3227 | ||
3228 | static void | |
db9220c3 | 3229 | put_queue_stats(struct queue_stats_cbdata *cbdata, uint32_t queue_id, |
c1c9c9c4 BP |
3230 | const struct netdev_queue_stats *stats) |
3231 | { | |
6dc34a0d | 3232 | struct ofputil_queue_stats oqs; |
c1c9c9c4 | 3233 | |
6dc34a0d BP |
3234 | oqs.port_no = cbdata->ofport->pp.port_no; |
3235 | oqs.queue_id = queue_id; | |
3236 | oqs.tx_bytes = stats->tx_bytes; | |
3237 | oqs.tx_packets = stats->tx_packets; | |
3238 | oqs.tx_errors = stats->tx_errors; | |
3239 | if (stats->created != LLONG_MIN) { | |
3240 | calc_duration(stats->created, cbdata->now, | |
3241 | &oqs.duration_sec, &oqs.duration_nsec); | |
3242 | } else { | |
3243 | oqs.duration_sec = oqs.duration_nsec = UINT32_MAX; | |
3244 | } | |
64626975 | 3245 | ofputil_append_queue_stat(&cbdata->replies, &oqs); |
c1c9c9c4 BP |
3246 | } |
3247 | ||
3248 | static void | |
db9220c3 | 3249 | handle_queue_stats_dump_cb(uint32_t queue_id, |
c1c9c9c4 BP |
3250 | struct netdev_queue_stats *stats, |
3251 | void *cbdata_) | |
3252 | { | |
3253 | struct queue_stats_cbdata *cbdata = cbdata_; | |
3254 | ||
3255 | put_queue_stats(cbdata, queue_id, stats); | |
3256 | } | |
3257 | ||
0414d158 | 3258 | static enum ofperr |
ca0f572c | 3259 | handle_queue_stats_for_port(struct ofport *port, uint32_t queue_id, |
c1c9c9c4 BP |
3260 | struct queue_stats_cbdata *cbdata) |
3261 | { | |
ca0f572c | 3262 | cbdata->ofport = port; |
c1c9c9c4 BP |
3263 | if (queue_id == OFPQ_ALL) { |
3264 | netdev_dump_queue_stats(port->netdev, | |
3265 | handle_queue_stats_dump_cb, cbdata); | |
3266 | } else { | |
3267 | struct netdev_queue_stats stats; | |
3268 | ||
1ac788f6 BP |
3269 | if (!netdev_get_queue_stats(port->netdev, queue_id, &stats)) { |
3270 | put_queue_stats(cbdata, queue_id, &stats); | |
0414d158 BP |
3271 | } else { |
3272 | return OFPERR_OFPQOFC_BAD_QUEUE; | |
1ac788f6 | 3273 | } |
c1c9c9c4 | 3274 | } |
0414d158 | 3275 | return 0; |
c1c9c9c4 BP |
3276 | } |
3277 | ||
90bf1e07 | 3278 | static enum ofperr |
63f2140a | 3279 | handle_queue_stats_request(struct ofconn *ofconn, |
982697a4 | 3280 | const struct ofp_header *rq) |
c1c9c9c4 | 3281 | { |
64ff1d96 | 3282 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
c1c9c9c4 | 3283 | struct queue_stats_cbdata cbdata; |
0414d158 | 3284 | struct ofport *port; |
0414d158 | 3285 | enum ofperr error; |
64626975 | 3286 | struct ofputil_queue_stats_request oqsr; |
c1c9c9c4 | 3287 | |
c1c9c9c4 BP |
3288 | COVERAGE_INC(ofproto_queue_req); |
3289 | ||
982697a4 | 3290 | ofpmp_init(&cbdata.replies, rq); |
6dc34a0d | 3291 | cbdata.now = time_msec(); |
c1c9c9c4 | 3292 | |
64626975 SH |
3293 | error = ofputil_decode_queue_stats_request(rq, &oqsr); |
3294 | if (error) { | |
3295 | return error; | |
3296 | } | |
3297 | ||
7f05e7ab | 3298 | if (oqsr.port_no == OFPP_ANY) { |
0414d158 | 3299 | error = OFPERR_OFPQOFC_BAD_QUEUE; |
4e8e4213 | 3300 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
64626975 | 3301 | if (!handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata)) { |
0414d158 BP |
3302 | error = 0; |
3303 | } | |
c1c9c9c4 | 3304 | } |
0414d158 | 3305 | } else { |
64626975 | 3306 | port = ofproto_get_port(ofproto, oqsr.port_no); |
0414d158 | 3307 | error = (port |
64626975 | 3308 | ? handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata) |
0414d158 BP |
3309 | : OFPERR_OFPQOFC_BAD_PORT); |
3310 | } | |
3311 | if (!error) { | |
3312 | ofconn_send_replies(ofconn, &cbdata.replies); | |
c1c9c9c4 | 3313 | } else { |
63f2140a | 3314 | ofpbuf_list_delete(&cbdata.replies); |
c1c9c9c4 | 3315 | } |
c1c9c9c4 | 3316 | |
0414d158 | 3317 | return error; |
c1c9c9c4 | 3318 | } |
7ee20df1 BP |
3319 | |
3320 | static bool | |
3321 | is_flow_deletion_pending(const struct ofproto *ofproto, | |
3322 | const struct cls_rule *cls_rule, | |
3323 | uint8_t table_id) | |
3324 | { | |
3325 | if (!hmap_is_empty(&ofproto->deletions)) { | |
3326 | struct ofoperation *op; | |
3327 | ||
3328 | HMAP_FOR_EACH_WITH_HASH (op, hmap_node, | |
3329 | cls_rule_hash(cls_rule, table_id), | |
3330 | &ofproto->deletions) { | |
3331 | if (cls_rule_equal(cls_rule, &op->rule->cr)) { | |
3332 | return true; | |
3333 | } | |
3334 | } | |
3335 | } | |
3336 | ||
3337 | return false; | |
3338 | } | |
3339 | ||
79eee1eb BP |
3340 | /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT |
3341 | * in which no matching flow already exists in the flow table. | |
3342 | * | |
3343 | * Adds the flow specified by 'ofm', which is followed by 'n_actions' | |
75a75043 | 3344 | * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow |
90bf1e07 BP |
3345 | * error code on failure, or OFPROTO_POSTPONE if the operation cannot be |
3346 | * initiated now but may be retried later. | |
79eee1eb | 3347 | * |
f25d0cf3 BP |
3348 | * Upon successful return, takes ownership of 'fm->ofpacts'. On failure, |
3349 | * ownership remains with the caller. | |
3350 | * | |
79eee1eb BP |
3351 | * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id, |
3352 | * if any. */ | |
90bf1e07 | 3353 | static enum ofperr |
a9a2da38 | 3354 | add_flow(struct ofproto *ofproto, struct ofconn *ofconn, |
e3b56933 | 3355 | struct ofputil_flow_mod *fm, const struct ofp_header *request) |
064af421 | 3356 | { |
d0918789 | 3357 | struct oftable *table; |
7ee20df1 BP |
3358 | struct ofopgroup *group; |
3359 | struct rule *victim; | |
064af421 | 3360 | struct rule *rule; |
5a361239 | 3361 | uint8_t table_id; |
064af421 BP |
3362 | int error; |
3363 | ||
48266274 BP |
3364 | error = check_table_id(ofproto, fm->table_id); |
3365 | if (error) { | |
3366 | return error; | |
3367 | } | |
3368 | ||
7ee20df1 BP |
3369 | /* Pick table. */ |
3370 | if (fm->table_id == 0xff) { | |
13521ff5 | 3371 | if (ofproto->ofproto_class->rule_choose_table) { |
81a76618 BP |
3372 | error = ofproto->ofproto_class->rule_choose_table(ofproto, |
3373 | &fm->match, | |
7ee20df1 BP |
3374 | &table_id); |
3375 | if (error) { | |
3376 | return error; | |
3377 | } | |
cb22974d | 3378 | ovs_assert(table_id < ofproto->n_tables); |
7ee20df1 | 3379 | } else { |
5a361239 | 3380 | table_id = 0; |
7ee20df1 BP |
3381 | } |
3382 | } else if (fm->table_id < ofproto->n_tables) { | |
5a361239 | 3383 | table_id = fm->table_id; |
7ee20df1 | 3384 | } else { |
c22c56bd | 3385 | return OFPERR_OFPBRC_BAD_TABLE_ID; |
064af421 BP |
3386 | } |
3387 | ||
5a361239 JR |
3388 | table = &ofproto->tables[table_id]; |
3389 | ||
5c67e4af BP |
3390 | if (table->flags & OFTABLE_READONLY) { |
3391 | return OFPERR_OFPBRC_EPERM; | |
3392 | } | |
3393 | ||
e3b56933 JR |
3394 | /* Verify actions. */ |
3395 | error = ofproto_check_ofpacts(ofproto, fm->ofpacts, fm->ofpacts_len, | |
3396 | &fm->match.flow, table_id); | |
3397 | if (error) { | |
3398 | return error; | |
3399 | } | |
3400 | ||
81a76618 BP |
3401 | /* Allocate new rule and initialize classifier rule. */ |
3402 | rule = ofproto->ofproto_class->rule_alloc(); | |
3403 | if (!rule) { | |
3404 | VLOG_WARN_RL(&rl, "%s: failed to create rule (%s)", | |
10a89ef0 | 3405 | ofproto->name, ovs_strerror(error)); |
81a76618 | 3406 | return ENOMEM; |
63adcc7d | 3407 | } |
81a76618 | 3408 | cls_rule_init(&rule->cr, &fm->match, fm->priority); |
63adcc7d | 3409 | |
7ee20df1 | 3410 | /* Serialize against pending deletion. */ |
5a361239 | 3411 | if (is_flow_deletion_pending(ofproto, &rule->cr, table_id)) { |
48d28ac1 | 3412 | cls_rule_destroy(&rule->cr); |
81a76618 | 3413 | ofproto->ofproto_class->rule_dealloc(rule); |
7ee20df1 | 3414 | return OFPROTO_POSTPONE; |
afe75089 | 3415 | } |
064af421 | 3416 | |
81a76618 | 3417 | /* Check for overlap, if requested. */ |
c09f755d BP |
3418 | if (fm->flags & OFPFF_CHECK_OVERLAP) { |
3419 | bool overlaps; | |
3420 | ||
3421 | ovs_rwlock_rdlock(&table->cls.rwlock); | |
3422 | overlaps = classifier_rule_overlaps(&table->cls, &rule->cr); | |
3423 | ovs_rwlock_unlock(&table->cls.rwlock); | |
3424 | ||
3425 | if (overlaps) { | |
3426 | cls_rule_destroy(&rule->cr); | |
3427 | ofproto->ofproto_class->rule_dealloc(rule); | |
3428 | return OFPERR_OFPFMFC_OVERLAP; | |
3429 | } | |
7ee20df1 | 3430 | } |
81a76618 | 3431 | |
2e1ae200 JR |
3432 | /* FIXME: Implement OFPFF12_RESET_COUNTS */ |
3433 | ||
7ee20df1 | 3434 | rule->ofproto = ofproto; |
7ee20df1 | 3435 | rule->pending = NULL; |
623e1caf | 3436 | rule->flow_cookie = fm->new_cookie; |
1745cd08 | 3437 | rule->created = rule->modified = rule->used = time_msec(); |
a3779dbc | 3438 | |
834d6caf | 3439 | ovs_mutex_init(&rule->timeout_mutex); |
a3779dbc | 3440 | ovs_mutex_lock(&rule->timeout_mutex); |
7ee20df1 BP |
3441 | rule->idle_timeout = fm->idle_timeout; |
3442 | rule->hard_timeout = fm->hard_timeout; | |
a3779dbc EJ |
3443 | ovs_mutex_unlock(&rule->timeout_mutex); |
3444 | ||
7ee20df1 BP |
3445 | rule->table_id = table - ofproto->tables; |
3446 | rule->send_flow_removed = (fm->flags & OFPFF_SEND_FLOW_REM) != 0; | |
2e1ae200 JR |
3447 | /* FIXME: Implement OF 1.3 flags OFPFF13_NO_PKT_COUNTS |
3448 | and OFPFF13_NO_BYT_COUNTS */ | |
f25d0cf3 BP |
3449 | rule->ofpacts = xmemdup(fm->ofpacts, fm->ofpacts_len); |
3450 | rule->ofpacts_len = fm->ofpacts_len; | |
9cae45dc JR |
3451 | rule->meter_id = find_meter(rule->ofpacts, rule->ofpacts_len); |
3452 | list_init(&rule->meter_list_node); | |
254750ce | 3453 | rule->eviction_group = NULL; |
e503cc19 | 3454 | list_init(&rule->expirable); |
2b07c8b1 BP |
3455 | rule->monitor_flags = 0; |
3456 | rule->add_seqno = 0; | |
3457 | rule->modify_seqno = 0; | |
ad3efdcb | 3458 | ovs_rwlock_init(&rule->evict); |
7ee20df1 BP |
3459 | |
3460 | /* Insert new rule. */ | |
d0918789 | 3461 | victim = oftable_replace_rule(rule); |
5c67e4af BP |
3462 | if (victim && !rule_is_modifiable(victim)) { |
3463 | error = OFPERR_OFPBRC_EPERM; | |
3464 | } else if (victim && victim->pending) { | |
7ee20df1 BP |
3465 | error = OFPROTO_POSTPONE; |
3466 | } else { | |
a7d94793 | 3467 | struct ofoperation *op; |
254750ce | 3468 | struct rule *evict; |
0b4f2078 | 3469 | size_t n_rules; |
254750ce | 3470 | |
0b4f2078 EJ |
3471 | ovs_rwlock_rdlock(&table->cls.rwlock); |
3472 | n_rules = classifier_count(&table->cls); | |
3473 | ovs_rwlock_unlock(&table->cls.rwlock); | |
3474 | if (n_rules > table->max_flows) { | |
ad3efdcb EJ |
3475 | ovs_rwlock_rdlock(&rule->evict); |
3476 | if (choose_rule_to_evict(table, &evict)) { | |
3477 | ovs_rwlock_unlock(&rule->evict); | |
3478 | ovs_rwlock_unlock(&evict->evict); | |
3479 | if (evict->pending) { | |
3480 | error = OFPROTO_POSTPONE; | |
3481 | goto exit; | |
3482 | } | |
3483 | } else { | |
3484 | ovs_rwlock_unlock(&rule->evict); | |
be2b69d1 | 3485 | error = OFPERR_OFPFMFC_TABLE_FULL; |
254750ce | 3486 | goto exit; |
254750ce BP |
3487 | } |
3488 | } else { | |
3489 | evict = NULL; | |
3490 | } | |
3491 | ||
7024dffe | 3492 | group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id); |
2b07c8b1 | 3493 | op = ofoperation_create(group, rule, OFOPERATION_ADD, 0); |
a7d94793 | 3494 | op->victim = victim; |
7ee20df1 BP |
3495 | |
3496 | error = ofproto->ofproto_class->rule_construct(rule); | |
3497 | if (error) { | |
e615b0a3 | 3498 | op->group->n_running--; |
7ee20df1 | 3499 | ofoperation_destroy(rule->pending); |
254750ce | 3500 | } else if (evict) { |
ad3efdcb EJ |
3501 | /* It would be better if we maintained the lock we took in |
3502 | * choose_rule_to_evict() earlier, but that confuses the thread | |
3503 | * safety analysis, and this code is fragile enough that we really | |
3504 | * need it. In the worst case, we'll have to block a little while | |
3505 | * before we perform the eviction, which doesn't seem like a big | |
3506 | * problem. */ | |
3507 | ovs_rwlock_wrlock(&evict->evict); | |
ca311b2f | 3508 | delete_flow__(evict, group, OFPRR_EVICTION); |
7ee20df1 BP |
3509 | } |
3510 | ofopgroup_submit(group); | |
064af421 | 3511 | } |
79eee1eb | 3512 | |
254750ce | 3513 | exit: |
7ee20df1 | 3514 | /* Back out if an error occurred. */ |
79eee1eb | 3515 | if (error) { |
d0918789 | 3516 | oftable_substitute_rule(rule, victim); |
7ee20df1 | 3517 | ofproto_rule_destroy__(rule); |
79eee1eb | 3518 | } |
7ee20df1 | 3519 | return error; |
064af421 | 3520 | } |
79eee1eb BP |
3521 | \f |
3522 | /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */ | |
064af421 | 3523 | |
9ed18e46 BP |
3524 | /* Modifies the rules listed in 'rules', changing their actions to match those |
3525 | * in 'fm'. | |
79eee1eb | 3526 | * |
9ed18e46 BP |
3527 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, |
3528 | * if any. | |
3529 | * | |
3530 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 3531 | static enum ofperr |
7024dffe | 3532 | modify_flows__(struct ofproto *ofproto, struct ofconn *ofconn, |
e3b56933 | 3533 | struct ofputil_flow_mod *fm, const struct ofp_header *request, |
9cae45dc | 3534 | struct list *rules) |
79eee1eb | 3535 | { |
7ee20df1 | 3536 | struct ofopgroup *group; |
9ed18e46 | 3537 | struct rule *rule; |
5c67e4af | 3538 | enum ofperr error; |
79eee1eb | 3539 | |
7024dffe | 3540 | group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id); |
5c67e4af | 3541 | error = OFPERR_OFPBRC_EPERM; |
9ed18e46 | 3542 | LIST_FOR_EACH (rule, ofproto_node, rules) { |
08043761 BP |
3543 | struct ofoperation *op; |
3544 | bool actions_changed; | |
08043761 | 3545 | |
2e1ae200 JR |
3546 | /* FIXME: Implement OFPFF12_RESET_COUNTS */ |
3547 | ||
5c67e4af BP |
3548 | if (rule_is_modifiable(rule)) { |
3549 | /* At least one rule is modifiable, don't report EPERM error. */ | |
3550 | error = 0; | |
3551 | } else { | |
3552 | continue; | |
3553 | } | |
3554 | ||
e3b56933 JR |
3555 | /* Verify actions. */ |
3556 | error = ofpacts_check(fm->ofpacts, fm->ofpacts_len, &fm->match.flow, | |
3557 | ofproto->max_ports, rule->table_id); | |
3558 | if (error) { | |
3559 | return error; | |
3560 | } | |
3561 | ||
08043761 BP |
3562 | actions_changed = !ofpacts_equal(fm->ofpacts, fm->ofpacts_len, |
3563 | rule->ofpacts, rule->ofpacts_len); | |
a7d94793 | 3564 | |
2b07c8b1 | 3565 | op = ofoperation_create(group, rule, OFOPERATION_MODIFY, 0); |
98eaac36 | 3566 | |
23342857 | 3567 | if (fm->modify_cookie && fm->new_cookie != htonll(UINT64_MAX)) { |
98eaac36 JR |
3568 | ofproto_rule_change_cookie(ofproto, rule, fm->new_cookie); |
3569 | } | |
08043761 | 3570 | if (actions_changed) { |
a7d94793 BP |
3571 | op->ofpacts = rule->ofpacts; |
3572 | op->ofpacts_len = rule->ofpacts_len; | |
9cae45dc | 3573 | op->meter_id = rule->meter_id; |
f25d0cf3 BP |
3574 | rule->ofpacts = xmemdup(fm->ofpacts, fm->ofpacts_len); |
3575 | rule->ofpacts_len = fm->ofpacts_len; | |
9cae45dc | 3576 | rule->meter_id = find_meter(rule->ofpacts, rule->ofpacts_len); |
f25d0cf3 | 3577 | rule->ofproto->ofproto_class->rule_modify_actions(rule); |
308881af | 3578 | } else { |
08043761 | 3579 | ofoperation_complete(op, 0); |
623e1caf | 3580 | } |
5ecc9d81 | 3581 | } |
7ee20df1 | 3582 | ofopgroup_submit(group); |
79eee1eb | 3583 | |
5c67e4af | 3584 | return error; |
9ed18e46 BP |
3585 | } |
3586 | ||
9387b970 SH |
3587 | static enum ofperr |
3588 | modify_flows_add(struct ofproto *ofproto, struct ofconn *ofconn, | |
e3b56933 | 3589 | struct ofputil_flow_mod *fm, const struct ofp_header *request) |
9387b970 SH |
3590 | { |
3591 | if (fm->cookie_mask != htonll(0) || fm->new_cookie == htonll(UINT64_MAX)) { | |
3592 | return 0; | |
3593 | } | |
3594 | return add_flow(ofproto, ofconn, fm, request); | |
3595 | } | |
3596 | ||
90bf1e07 BP |
3597 | /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on |
3598 | * failure. | |
9ed18e46 BP |
3599 | * |
3600 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, | |
3601 | * if any. */ | |
90bf1e07 | 3602 | static enum ofperr |
7024dffe | 3603 | modify_flows_loose(struct ofproto *ofproto, struct ofconn *ofconn, |
e3b56933 | 3604 | struct ofputil_flow_mod *fm, |
7ee20df1 | 3605 | const struct ofp_header *request) |
9ed18e46 | 3606 | { |
9ed18e46 BP |
3607 | struct list rules; |
3608 | int error; | |
3609 | ||
81a76618 | 3610 | error = collect_rules_loose(ofproto, fm->table_id, &fm->match, |
e729e793 | 3611 | fm->cookie, fm->cookie_mask, |
7f05e7ab | 3612 | OFPP_ANY, &rules); |
623e1caf JP |
3613 | if (error) { |
3614 | return error; | |
3615 | } else if (list_is_empty(&rules)) { | |
9387b970 | 3616 | return modify_flows_add(ofproto, ofconn, fm, request); |
623e1caf JP |
3617 | } else { |
3618 | return modify_flows__(ofproto, ofconn, fm, request, &rules); | |
3619 | } | |
79eee1eb BP |
3620 | } |
3621 | ||
3622 | /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error | |
90bf1e07 | 3623 | * code on failure. |
79eee1eb | 3624 | * |
9ed18e46 | 3625 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, |
79eee1eb | 3626 | * if any. */ |
90bf1e07 | 3627 | static enum ofperr |
7024dffe | 3628 | modify_flow_strict(struct ofproto *ofproto, struct ofconn *ofconn, |
e3b56933 | 3629 | struct ofputil_flow_mod *fm, |
7ee20df1 | 3630 | const struct ofp_header *request) |
79eee1eb | 3631 | { |
9ed18e46 | 3632 | struct list rules; |
6c1491fb BP |
3633 | int error; |
3634 | ||
81a76618 BP |
3635 | error = collect_rules_strict(ofproto, fm->table_id, &fm->match, |
3636 | fm->priority, fm->cookie, fm->cookie_mask, | |
7f05e7ab | 3637 | OFPP_ANY, &rules); |
623e1caf JP |
3638 | |
3639 | if (error) { | |
3640 | return error; | |
3641 | } else if (list_is_empty(&rules)) { | |
9387b970 | 3642 | return modify_flows_add(ofproto, ofconn, fm, request); |
623e1caf JP |
3643 | } else { |
3644 | return list_is_singleton(&rules) ? modify_flows__(ofproto, ofconn, | |
3645 | fm, request, &rules) | |
3646 | : 0; | |
3647 | } | |
79eee1eb | 3648 | } |
9ed18e46 BP |
3649 | \f |
3650 | /* OFPFC_DELETE implementation. */ | |
79eee1eb | 3651 | |
254750ce | 3652 | static void |
ca311b2f JR |
3653 | delete_flow__(struct rule *rule, struct ofopgroup *group, |
3654 | enum ofp_flow_removed_reason reason) | |
254750ce BP |
3655 | { |
3656 | struct ofproto *ofproto = rule->ofproto; | |
3657 | ||
ca311b2f | 3658 | ofproto_rule_send_removed(rule, reason); |
254750ce | 3659 | |
ca311b2f | 3660 | ofoperation_create(group, rule, OFOPERATION_DELETE, reason); |
254750ce BP |
3661 | oftable_remove_rule(rule); |
3662 | ofproto->ofproto_class->rule_destruct(rule); | |
3663 | } | |
3664 | ||
9ed18e46 BP |
3665 | /* Deletes the rules listed in 'rules'. |
3666 | * | |
3667 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 3668 | static enum ofperr |
7024dffe | 3669 | delete_flows__(struct ofproto *ofproto, struct ofconn *ofconn, |
ca311b2f JR |
3670 | const struct ofp_header *request, struct list *rules, |
3671 | enum ofp_flow_removed_reason reason) | |
064af421 | 3672 | { |
9ed18e46 | 3673 | struct rule *rule, *next; |
7ee20df1 | 3674 | struct ofopgroup *group; |
79eee1eb | 3675 | |
7024dffe | 3676 | group = ofopgroup_create(ofproto, ofconn, request, UINT32_MAX); |
9ed18e46 | 3677 | LIST_FOR_EACH_SAFE (rule, next, ofproto_node, rules) { |
ad3efdcb | 3678 | ovs_rwlock_wrlock(&rule->evict); |
ca311b2f | 3679 | delete_flow__(rule, group, reason); |
79eee1eb | 3680 | } |
7ee20df1 | 3681 | ofopgroup_submit(group); |
79eee1eb | 3682 | |
9ed18e46 | 3683 | return 0; |
79eee1eb | 3684 | } |
79eee1eb BP |
3685 | |
3686 | /* Implements OFPFC_DELETE. */ | |
90bf1e07 | 3687 | static enum ofperr |
7024dffe BP |
3688 | delete_flows_loose(struct ofproto *ofproto, struct ofconn *ofconn, |
3689 | const struct ofputil_flow_mod *fm, | |
7ee20df1 | 3690 | const struct ofp_header *request) |
79eee1eb | 3691 | { |
9ed18e46 | 3692 | struct list rules; |
90bf1e07 | 3693 | enum ofperr error; |
064af421 | 3694 | |
81a76618 | 3695 | error = collect_rules_loose(ofproto, fm->table_id, &fm->match, |
e729e793 JP |
3696 | fm->cookie, fm->cookie_mask, |
3697 | fm->out_port, &rules); | |
9ed18e46 | 3698 | return (error ? error |
7024dffe | 3699 | : !list_is_empty(&rules) ? delete_flows__(ofproto, ofconn, request, |
ca311b2f | 3700 | &rules, OFPRR_DELETE) |
9ed18e46 | 3701 | : 0); |
064af421 BP |
3702 | } |
3703 | ||
79eee1eb | 3704 | /* Implements OFPFC_DELETE_STRICT. */ |
90bf1e07 | 3705 | static enum ofperr |
7024dffe | 3706 | delete_flow_strict(struct ofproto *ofproto, struct ofconn *ofconn, |
1b9d6420 | 3707 | const struct ofputil_flow_mod *fm, |
7ee20df1 | 3708 | const struct ofp_header *request) |
79eee1eb | 3709 | { |
9ed18e46 | 3710 | struct list rules; |
90bf1e07 | 3711 | enum ofperr error; |
79eee1eb | 3712 | |
81a76618 BP |
3713 | error = collect_rules_strict(ofproto, fm->table_id, &fm->match, |
3714 | fm->priority, fm->cookie, fm->cookie_mask, | |
e729e793 | 3715 | fm->out_port, &rules); |
9ed18e46 | 3716 | return (error ? error |
7024dffe | 3717 | : list_is_singleton(&rules) ? delete_flows__(ofproto, ofconn, |
ca311b2f JR |
3718 | request, &rules, |
3719 | OFPRR_DELETE) | |
9ed18e46 | 3720 | : 0); |
abe529af BP |
3721 | } |
3722 | ||
3723 | static void | |
3724 | ofproto_rule_send_removed(struct rule *rule, uint8_t reason) | |
3725 | { | |
3726 | struct ofputil_flow_removed fr; | |
3727 | ||
2b07c8b1 | 3728 | if (ofproto_rule_is_hidden(rule) || !rule->send_flow_removed) { |
abe529af BP |
3729 | return; |
3730 | } | |
3731 | ||
5cb7a798 | 3732 | minimatch_expand(&rule->cr.match, &fr.match); |
81a76618 | 3733 | fr.priority = rule->cr.priority; |
abe529af BP |
3734 | fr.cookie = rule->flow_cookie; |
3735 | fr.reason = reason; | |
95216219 | 3736 | fr.table_id = rule->table_id; |
65e0be10 BP |
3737 | calc_duration(rule->created, time_msec(), |
3738 | &fr.duration_sec, &fr.duration_nsec); | |
a3779dbc | 3739 | ovs_mutex_lock(&rule->timeout_mutex); |
abe529af | 3740 | fr.idle_timeout = rule->idle_timeout; |
fa2bad0f | 3741 | fr.hard_timeout = rule->hard_timeout; |
a3779dbc | 3742 | ovs_mutex_unlock(&rule->timeout_mutex); |
abe529af BP |
3743 | rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count, |
3744 | &fr.byte_count); | |
3745 | ||
3746 | connmgr_send_flow_removed(rule->ofproto->connmgr, &fr); | |
3747 | } | |
3748 | ||
1745cd08 BP |
3749 | void |
3750 | ofproto_rule_update_used(struct rule *rule, long long int used) | |
3751 | { | |
3752 | if (used > rule->used) { | |
254750ce BP |
3753 | struct eviction_group *evg = rule->eviction_group; |
3754 | ||
1745cd08 | 3755 | rule->used = used; |
254750ce BP |
3756 | if (evg) { |
3757 | heap_change(&evg->rules, &rule->evg_node, | |
3758 | rule_eviction_priority(rule)); | |
3759 | } | |
1745cd08 BP |
3760 | } |
3761 | } | |
3762 | ||
abe529af BP |
3763 | /* Sends an OpenFlow "flow removed" message with the given 'reason' (either |
3764 | * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its | |
3765 | * ofproto. | |
3766 | * | |
e2a3d183 BP |
3767 | * 'rule' must not have a pending operation (that is, 'rule->pending' must be |
3768 | * NULL). | |
3769 | * | |
abe529af BP |
3770 | * ofproto implementation ->run() functions should use this function to expire |
3771 | * OpenFlow flows. */ | |
3772 | void | |
3773 | ofproto_rule_expire(struct rule *rule, uint8_t reason) | |
3774 | { | |
7ee20df1 BP |
3775 | struct ofproto *ofproto = rule->ofproto; |
3776 | struct ofopgroup *group; | |
3777 | ||
cb22974d | 3778 | ovs_assert(reason == OFPRR_HARD_TIMEOUT || reason == OFPRR_IDLE_TIMEOUT); |
7ee20df1 | 3779 | |
abe529af | 3780 | ofproto_rule_send_removed(rule, reason); |
7ee20df1 | 3781 | |
7024dffe | 3782 | group = ofopgroup_create_unattached(ofproto); |
2b07c8b1 | 3783 | ofoperation_create(group, rule, OFOPERATION_DELETE, reason); |
d0918789 | 3784 | oftable_remove_rule(rule); |
254750ce | 3785 | ofproto->ofproto_class->rule_destruct(rule); |
7ee20df1 | 3786 | ofopgroup_submit(group); |
79eee1eb BP |
3787 | } |
3788 | \f | |
90bf1e07 | 3789 | static enum ofperr |
2e4f5fcf | 3790 | handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3791 | { |
a5b8d268 | 3792 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
a9a2da38 | 3793 | struct ofputil_flow_mod fm; |
f25d0cf3 BP |
3794 | uint64_t ofpacts_stub[1024 / 8]; |
3795 | struct ofpbuf ofpacts; | |
90bf1e07 | 3796 | enum ofperr error; |
a5b8d268 | 3797 | long long int now; |
064af421 | 3798 | |
76589937 | 3799 | error = reject_slave_controller(ofconn); |
9deba63b | 3800 | if (error) { |
f25d0cf3 | 3801 | goto exit; |
9deba63b | 3802 | } |
3052b0c5 | 3803 | |
f25d0cf3 BP |
3804 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
3805 | error = ofputil_decode_flow_mod(&fm, oh, ofconn_get_protocol(ofconn), | |
3806 | &ofpacts); | |
548de4dd | 3807 | if (!error) { |
f1822532 | 3808 | error = handle_flow_mod__(ofproto, ofconn, &fm, oh); |
49bdc010 | 3809 | } |
a5b8d268 | 3810 | if (error) { |
f25d0cf3 | 3811 | goto exit_free_ofpacts; |
a5b8d268 | 3812 | } |
2e310801 | 3813 | |
a5b8d268 BP |
3814 | /* Record the operation for logging a summary report. */ |
3815 | switch (fm.command) { | |
3816 | case OFPFC_ADD: | |
3817 | ofproto->n_add++; | |
3818 | break; | |
3819 | ||
3820 | case OFPFC_MODIFY: | |
3821 | case OFPFC_MODIFY_STRICT: | |
3822 | ofproto->n_modify++; | |
3823 | break; | |
3824 | ||
3825 | case OFPFC_DELETE: | |
3826 | case OFPFC_DELETE_STRICT: | |
3827 | ofproto->n_delete++; | |
3828 | break; | |
3829 | } | |
3830 | ||
3831 | now = time_msec(); | |
3832 | if (ofproto->next_op_report == LLONG_MAX) { | |
3833 | ofproto->first_op = now; | |
3834 | ofproto->next_op_report = MAX(now + 10 * 1000, | |
3835 | ofproto->op_backoff); | |
3836 | ofproto->op_backoff = ofproto->next_op_report + 60 * 1000; | |
3837 | } | |
3838 | ofproto->last_op = now; | |
3839 | ||
f25d0cf3 BP |
3840 | exit_free_ofpacts: |
3841 | ofpbuf_uninit(&ofpacts); | |
3842 | exit: | |
3843 | return error; | |
75a75043 BP |
3844 | } |
3845 | ||
90bf1e07 | 3846 | static enum ofperr |
75a75043 | 3847 | handle_flow_mod__(struct ofproto *ofproto, struct ofconn *ofconn, |
e3b56933 | 3848 | struct ofputil_flow_mod *fm, const struct ofp_header *oh) |
75a75043 BP |
3849 | { |
3850 | if (ofproto->n_pending >= 50) { | |
cb22974d | 3851 | ovs_assert(!list_is_empty(&ofproto->pending)); |
75a75043 BP |
3852 | return OFPROTO_POSTPONE; |
3853 | } | |
3854 | ||
3855 | switch (fm->command) { | |
3052b0c5 | 3856 | case OFPFC_ADD: |
75a75043 | 3857 | return add_flow(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3858 | |
3859 | case OFPFC_MODIFY: | |
75a75043 | 3860 | return modify_flows_loose(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3861 | |
3862 | case OFPFC_MODIFY_STRICT: | |
75a75043 | 3863 | return modify_flow_strict(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3864 | |
3865 | case OFPFC_DELETE: | |
75a75043 | 3866 | return delete_flows_loose(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3867 | |
3868 | case OFPFC_DELETE_STRICT: | |
75a75043 | 3869 | return delete_flow_strict(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3870 | |
3871 | default: | |
75a75043 | 3872 | if (fm->command > 0xff) { |
fbfa2911 BP |
3873 | VLOG_WARN_RL(&rl, "%s: flow_mod has explicit table_id but " |
3874 | "flow_mod_table_id extension is not enabled", | |
3875 | ofproto->name); | |
6c1491fb | 3876 | } |
90bf1e07 | 3877 | return OFPERR_OFPFMFC_BAD_COMMAND; |
3052b0c5 BP |
3878 | } |
3879 | } | |
3880 | ||
90bf1e07 | 3881 | static enum ofperr |
d1e2cf21 | 3882 | handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh) |
9deba63b | 3883 | { |
f4f1ea7e BP |
3884 | struct ofputil_role_request request; |
3885 | struct ofputil_role_request reply; | |
9deba63b | 3886 | struct ofpbuf *buf; |
6ea4776b JR |
3887 | enum ofperr error; |
3888 | ||
f4f1ea7e | 3889 | error = ofputil_decode_role_message(oh, &request); |
6ea4776b JR |
3890 | if (error) { |
3891 | return error; | |
3892 | } | |
9deba63b | 3893 | |
f4f1ea7e BP |
3894 | if (request.role != OFPCR12_ROLE_NOCHANGE) { |
3895 | if (ofconn_get_role(ofconn) != request.role | |
3896 | && ofconn_has_pending_opgroups(ofconn)) { | |
3897 | return OFPROTO_POSTPONE; | |
3898 | } | |
7ee20df1 | 3899 | |
f4f1ea7e BP |
3900 | if (request.have_generation_id |
3901 | && !ofconn_set_master_election_id(ofconn, request.generation_id)) { | |
3902 | return OFPERR_OFPRRFC_STALE; | |
6ea4776b | 3903 | } |
6ea4776b | 3904 | |
f4f1ea7e BP |
3905 | ofconn_set_role(ofconn, request.role); |
3906 | } | |
9deba63b | 3907 | |
f4f1ea7e | 3908 | reply.role = ofconn_get_role(ofconn); |
147cc9d3 BP |
3909 | reply.have_generation_id = ofconn_get_master_election_id( |
3910 | ofconn, &reply.generation_id); | |
f4f1ea7e | 3911 | buf = ofputil_encode_role_reply(oh, &reply); |
b0421aa2 | 3912 | ofconn_send_reply(ofconn, buf); |
9deba63b BP |
3913 | |
3914 | return 0; | |
3915 | } | |
3916 | ||
90bf1e07 | 3917 | static enum ofperr |
6c1491fb BP |
3918 | handle_nxt_flow_mod_table_id(struct ofconn *ofconn, |
3919 | const struct ofp_header *oh) | |
3920 | { | |
982697a4 | 3921 | const struct nx_flow_mod_table_id *msg = ofpmsg_body(oh); |
27527aa0 BP |
3922 | enum ofputil_protocol cur, next; |
3923 | ||
3924 | cur = ofconn_get_protocol(ofconn); | |
3925 | next = ofputil_protocol_set_tid(cur, msg->set != 0); | |
3926 | ofconn_set_protocol(ofconn, next); | |
6c1491fb | 3927 | |
6c1491fb BP |
3928 | return 0; |
3929 | } | |
3930 | ||
90bf1e07 | 3931 | static enum ofperr |
d1e2cf21 | 3932 | handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh) |
09246b99 | 3933 | { |
982697a4 | 3934 | const struct nx_set_flow_format *msg = ofpmsg_body(oh); |
27527aa0 BP |
3935 | enum ofputil_protocol cur, next; |
3936 | enum ofputil_protocol next_base; | |
09246b99 | 3937 | |
27527aa0 BP |
3938 | next_base = ofputil_nx_flow_format_to_protocol(ntohl(msg->format)); |
3939 | if (!next_base) { | |
90bf1e07 | 3940 | return OFPERR_OFPBRC_EPERM; |
09246b99 | 3941 | } |
7ee20df1 | 3942 | |
27527aa0 BP |
3943 | cur = ofconn_get_protocol(ofconn); |
3944 | next = ofputil_protocol_set_base(cur, next_base); | |
3945 | if (cur != next && ofconn_has_pending_opgroups(ofconn)) { | |
3946 | /* Avoid sending async messages in surprising protocol. */ | |
7ee20df1 BP |
3947 | return OFPROTO_POSTPONE; |
3948 | } | |
3949 | ||
27527aa0 | 3950 | ofconn_set_protocol(ofconn, next); |
7ee20df1 | 3951 | return 0; |
09246b99 BP |
3952 | } |
3953 | ||
90bf1e07 | 3954 | static enum ofperr |
54834960 EJ |
3955 | handle_nxt_set_packet_in_format(struct ofconn *ofconn, |
3956 | const struct ofp_header *oh) | |
3957 | { | |
982697a4 | 3958 | const struct nx_set_packet_in_format *msg = ofpmsg_body(oh); |
54834960 EJ |
3959 | uint32_t format; |
3960 | ||
54834960 | 3961 | format = ntohl(msg->format); |
a15f0eeb | 3962 | if (format != NXPIF_OPENFLOW10 && format != NXPIF_NXM) { |
90bf1e07 | 3963 | return OFPERR_OFPBRC_EPERM; |
54834960 EJ |
3964 | } |
3965 | ||
3966 | if (format != ofconn_get_packet_in_format(ofconn) | |
3967 | && ofconn_has_pending_opgroups(ofconn)) { | |
3968 | /* Avoid sending async message in surprsing packet in format. */ | |
3969 | return OFPROTO_POSTPONE; | |
3970 | } | |
3971 | ||
3972 | ofconn_set_packet_in_format(ofconn, format); | |
3973 | return 0; | |
3974 | } | |
3975 | ||
80d5aefd BP |
3976 | static enum ofperr |
3977 | handle_nxt_set_async_config(struct ofconn *ofconn, const struct ofp_header *oh) | |
3978 | { | |
982697a4 | 3979 | const struct nx_async_config *msg = ofpmsg_body(oh); |
80d5aefd BP |
3980 | uint32_t master[OAM_N_TYPES]; |
3981 | uint32_t slave[OAM_N_TYPES]; | |
3982 | ||
3983 | master[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[0]); | |
3984 | master[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[0]); | |
3985 | master[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[0]); | |
3986 | ||
3987 | slave[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[1]); | |
3988 | slave[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[1]); | |
3989 | slave[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[1]); | |
3990 | ||
3991 | ofconn_set_async_config(ofconn, master, slave); | |
4550b647 MM |
3992 | if (ofconn_get_type(ofconn) == OFCONN_SERVICE && |
3993 | !ofconn_get_miss_send_len(ofconn)) { | |
3994 | ofconn_set_miss_send_len(ofconn, OFP_DEFAULT_MISS_SEND_LEN); | |
3995 | } | |
80d5aefd BP |
3996 | |
3997 | return 0; | |
3998 | } | |
3999 | ||
a7349929 BP |
4000 | static enum ofperr |
4001 | handle_nxt_set_controller_id(struct ofconn *ofconn, | |
4002 | const struct ofp_header *oh) | |
4003 | { | |
982697a4 | 4004 | const struct nx_controller_id *nci = ofpmsg_body(oh); |
a7349929 | 4005 | |
a7349929 BP |
4006 | if (!is_all_zeros(nci->zero, sizeof nci->zero)) { |
4007 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
4008 | } | |
4009 | ||
4010 | ofconn_set_controller_id(ofconn, ntohs(nci->controller_id)); | |
4011 | return 0; | |
4012 | } | |
4013 | ||
90bf1e07 | 4014 | static enum ofperr |
d1e2cf21 | 4015 | handle_barrier_request(struct ofconn *ofconn, const struct ofp_header *oh) |
246e61ea | 4016 | { |
246e61ea JP |
4017 | struct ofpbuf *buf; |
4018 | ||
7ee20df1 BP |
4019 | if (ofconn_has_pending_opgroups(ofconn)) { |
4020 | return OFPROTO_POSTPONE; | |
4021 | } | |
4022 | ||
982697a4 BP |
4023 | buf = ofpraw_alloc_reply((oh->version == OFP10_VERSION |
4024 | ? OFPRAW_OFPT10_BARRIER_REPLY | |
4025 | : OFPRAW_OFPT11_BARRIER_REPLY), oh, 0); | |
b0421aa2 | 4026 | ofconn_send_reply(ofconn, buf); |
246e61ea JP |
4027 | return 0; |
4028 | } | |
4029 | ||
2b07c8b1 BP |
4030 | static void |
4031 | ofproto_compose_flow_refresh_update(const struct rule *rule, | |
4032 | enum nx_flow_monitor_flags flags, | |
4033 | struct list *msgs) | |
4034 | { | |
4035 | struct ofoperation *op = rule->pending; | |
4036 | struct ofputil_flow_update fu; | |
5cb7a798 | 4037 | struct match match; |
2b07c8b1 BP |
4038 | |
4039 | if (op && op->type == OFOPERATION_ADD && !op->victim) { | |
4040 | /* We'll report the final flow when the operation completes. Reporting | |
4041 | * it now would cause a duplicate report later. */ | |
4042 | return; | |
4043 | } | |
4044 | ||
4045 | fu.event = (flags & (NXFMF_INITIAL | NXFMF_ADD) | |
4046 | ? NXFME_ADDED : NXFME_MODIFIED); | |
4047 | fu.reason = 0; | |
a3779dbc | 4048 | ovs_mutex_lock(&rule->timeout_mutex); |
2b07c8b1 BP |
4049 | fu.idle_timeout = rule->idle_timeout; |
4050 | fu.hard_timeout = rule->hard_timeout; | |
a3779dbc | 4051 | ovs_mutex_unlock(&rule->timeout_mutex); |
2b07c8b1 BP |
4052 | fu.table_id = rule->table_id; |
4053 | fu.cookie = rule->flow_cookie; | |
5cb7a798 BP |
4054 | minimatch_expand(&rule->cr.match, &match); |
4055 | fu.match = &match; | |
6b140a4e | 4056 | fu.priority = rule->cr.priority; |
2b07c8b1 BP |
4057 | if (!(flags & NXFMF_ACTIONS)) { |
4058 | fu.ofpacts = NULL; | |
4059 | fu.ofpacts_len = 0; | |
4060 | } else if (!op) { | |
4061 | fu.ofpacts = rule->ofpacts; | |
4062 | fu.ofpacts_len = rule->ofpacts_len; | |
4063 | } else { | |
4064 | /* An operation is in progress. Use the previous version of the flow's | |
4065 | * actions, so that when the operation commits we report the change. */ | |
4066 | switch (op->type) { | |
4067 | case OFOPERATION_ADD: | |
4068 | /* We already verified that there was a victim. */ | |
4069 | fu.ofpacts = op->victim->ofpacts; | |
4070 | fu.ofpacts_len = op->victim->ofpacts_len; | |
4071 | break; | |
4072 | ||
4073 | case OFOPERATION_MODIFY: | |
4074 | if (op->ofpacts) { | |
4075 | fu.ofpacts = op->ofpacts; | |
4076 | fu.ofpacts_len = op->ofpacts_len; | |
4077 | } else { | |
4078 | fu.ofpacts = rule->ofpacts; | |
4079 | fu.ofpacts_len = rule->ofpacts_len; | |
4080 | } | |
4081 | break; | |
4082 | ||
4083 | case OFOPERATION_DELETE: | |
4084 | fu.ofpacts = rule->ofpacts; | |
4085 | fu.ofpacts_len = rule->ofpacts_len; | |
4086 | break; | |
4087 | ||
4088 | default: | |
4089 | NOT_REACHED(); | |
4090 | } | |
4091 | } | |
4092 | ||
4093 | if (list_is_empty(msgs)) { | |
4094 | ofputil_start_flow_update(msgs); | |
4095 | } | |
4096 | ofputil_append_flow_update(&fu, msgs); | |
4097 | } | |
4098 | ||
4099 | void | |
4100 | ofmonitor_compose_refresh_updates(struct list *rules, struct list *msgs) | |
4101 | { | |
4102 | struct rule *rule; | |
4103 | ||
4104 | LIST_FOR_EACH (rule, ofproto_node, rules) { | |
4105 | enum nx_flow_monitor_flags flags = rule->monitor_flags; | |
4106 | rule->monitor_flags = 0; | |
4107 | ||
4108 | ofproto_compose_flow_refresh_update(rule, flags, msgs); | |
4109 | } | |
4110 | } | |
4111 | ||
4112 | static void | |
4113 | ofproto_collect_ofmonitor_refresh_rule(const struct ofmonitor *m, | |
4114 | struct rule *rule, uint64_t seqno, | |
4115 | struct list *rules) | |
4116 | { | |
4117 | enum nx_flow_monitor_flags update; | |
4118 | ||
4119 | if (ofproto_rule_is_hidden(rule)) { | |
4120 | return; | |
4121 | } | |
4122 | ||
4123 | if (!(rule->pending | |
4124 | ? ofoperation_has_out_port(rule->pending, m->out_port) | |
4125 | : ofproto_rule_has_out_port(rule, m->out_port))) { | |
4126 | return; | |
4127 | } | |
4128 | ||
4129 | if (seqno) { | |
4130 | if (rule->add_seqno > seqno) { | |
4131 | update = NXFMF_ADD | NXFMF_MODIFY; | |
4132 | } else if (rule->modify_seqno > seqno) { | |
4133 | update = NXFMF_MODIFY; | |
4134 | } else { | |
4135 | return; | |
4136 | } | |
4137 | ||
4138 | if (!(m->flags & update)) { | |
4139 | return; | |
4140 | } | |
4141 | } else { | |
4142 | update = NXFMF_INITIAL; | |
4143 | } | |
4144 | ||
4145 | if (!rule->monitor_flags) { | |
4146 | list_push_back(rules, &rule->ofproto_node); | |
4147 | } | |
4148 | rule->monitor_flags |= update | (m->flags & NXFMF_ACTIONS); | |
4149 | } | |
4150 | ||
4151 | static void | |
4152 | ofproto_collect_ofmonitor_refresh_rules(const struct ofmonitor *m, | |
4153 | uint64_t seqno, | |
4154 | struct list *rules) | |
4155 | { | |
4156 | const struct ofproto *ofproto = ofconn_get_ofproto(m->ofconn); | |
4157 | const struct ofoperation *op; | |
4158 | const struct oftable *table; | |
81a76618 | 4159 | struct cls_rule target; |
2b07c8b1 | 4160 | |
5cb7a798 | 4161 | cls_rule_init_from_minimatch(&target, &m->match, 0); |
2b07c8b1 BP |
4162 | FOR_EACH_MATCHING_TABLE (table, m->table_id, ofproto) { |
4163 | struct cls_cursor cursor; | |
4164 | struct rule *rule; | |
4165 | ||
0b4f2078 | 4166 | ovs_rwlock_rdlock(&table->cls.rwlock); |
81a76618 | 4167 | cls_cursor_init(&cursor, &table->cls, &target); |
2b07c8b1 | 4168 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
cb22974d | 4169 | ovs_assert(!rule->pending); /* XXX */ |
2b07c8b1 BP |
4170 | ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules); |
4171 | } | |
0b4f2078 | 4172 | ovs_rwlock_unlock(&table->cls.rwlock); |
2b07c8b1 BP |
4173 | } |
4174 | ||
4175 | HMAP_FOR_EACH (op, hmap_node, &ofproto->deletions) { | |
4176 | struct rule *rule = op->rule; | |
4177 | ||
4178 | if (((m->table_id == 0xff | |
4179 | ? !(ofproto->tables[rule->table_id].flags & OFTABLE_HIDDEN) | |
4180 | : m->table_id == rule->table_id)) | |
81a76618 | 4181 | && cls_rule_is_loose_match(&rule->cr, &target.match)) { |
2b07c8b1 BP |
4182 | ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules); |
4183 | } | |
4184 | } | |
48d28ac1 | 4185 | cls_rule_destroy(&target); |
2b07c8b1 BP |
4186 | } |
4187 | ||
4188 | static void | |
4189 | ofproto_collect_ofmonitor_initial_rules(struct ofmonitor *m, | |
4190 | struct list *rules) | |
4191 | { | |
4192 | if (m->flags & NXFMF_INITIAL) { | |
4193 | ofproto_collect_ofmonitor_refresh_rules(m, 0, rules); | |
4194 | } | |
4195 | } | |
4196 | ||
4197 | void | |
4198 | ofmonitor_collect_resume_rules(struct ofmonitor *m, | |
4199 | uint64_t seqno, struct list *rules) | |
4200 | { | |
4201 | ofproto_collect_ofmonitor_refresh_rules(m, seqno, rules); | |
4202 | } | |
4203 | ||
4204 | static enum ofperr | |
982697a4 | 4205 | handle_flow_monitor_request(struct ofconn *ofconn, const struct ofp_header *oh) |
2b07c8b1 BP |
4206 | { |
4207 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
4208 | struct ofmonitor **monitors; | |
4209 | size_t n_monitors, allocated_monitors; | |
4210 | struct list replies; | |
4211 | enum ofperr error; | |
4212 | struct list rules; | |
4213 | struct ofpbuf b; | |
4214 | size_t i; | |
4215 | ||
4216 | error = 0; | |
982697a4 | 4217 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
2b07c8b1 BP |
4218 | monitors = NULL; |
4219 | n_monitors = allocated_monitors = 0; | |
4220 | for (;;) { | |
4221 | struct ofputil_flow_monitor_request request; | |
4222 | struct ofmonitor *m; | |
4223 | int retval; | |
4224 | ||
4225 | retval = ofputil_decode_flow_monitor_request(&request, &b); | |
4226 | if (retval == EOF) { | |
4227 | break; | |
4228 | } else if (retval) { | |
4229 | error = retval; | |
4230 | goto error; | |
4231 | } | |
4232 | ||
4233 | if (request.table_id != 0xff | |
4234 | && request.table_id >= ofproto->n_tables) { | |
4235 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
4236 | goto error; | |
4237 | } | |
4238 | ||
4239 | error = ofmonitor_create(&request, ofconn, &m); | |
4240 | if (error) { | |
4241 | goto error; | |
4242 | } | |
4243 | ||
4244 | if (n_monitors >= allocated_monitors) { | |
4245 | monitors = x2nrealloc(monitors, &allocated_monitors, | |
4246 | sizeof *monitors); | |
4247 | } | |
4248 | monitors[n_monitors++] = m; | |
4249 | } | |
4250 | ||
4251 | list_init(&rules); | |
4252 | for (i = 0; i < n_monitors; i++) { | |
4253 | ofproto_collect_ofmonitor_initial_rules(monitors[i], &rules); | |
4254 | } | |
4255 | ||
982697a4 | 4256 | ofpmp_init(&replies, oh); |
2b07c8b1 BP |
4257 | ofmonitor_compose_refresh_updates(&rules, &replies); |
4258 | ofconn_send_replies(ofconn, &replies); | |
4259 | ||
4260 | free(monitors); | |
4261 | ||
4262 | return 0; | |
4263 | ||
4264 | error: | |
4265 | for (i = 0; i < n_monitors; i++) { | |
4266 | ofmonitor_destroy(monitors[i]); | |
4267 | } | |
4268 | free(monitors); | |
4269 | return error; | |
4270 | } | |
4271 | ||
4272 | static enum ofperr | |
4273 | handle_flow_monitor_cancel(struct ofconn *ofconn, const struct ofp_header *oh) | |
4274 | { | |
4275 | struct ofmonitor *m; | |
4276 | uint32_t id; | |
4277 | ||
4278 | id = ofputil_decode_flow_monitor_cancel(oh); | |
4279 | m = ofmonitor_lookup(ofconn, id); | |
4280 | if (!m) { | |
4281 | return OFPERR_NXBRC_FM_BAD_ID; | |
4282 | } | |
4283 | ||
4284 | ofmonitor_destroy(m); | |
4285 | return 0; | |
4286 | } | |
4287 | ||
9cae45dc JR |
4288 | /* Meters implementation. |
4289 | * | |
4290 | * Meter table entry, indexed by the OpenFlow meter_id. | |
4291 | * These are always dynamically allocated to allocate enough space for | |
4292 | * the bands. | |
4293 | * 'created' is used to compute the duration for meter stats. | |
4294 | * 'list rules' is needed so that we can delete the dependent rules when the | |
4295 | * meter table entry is deleted. | |
4296 | * 'provider_meter_id' is for the provider's private use. | |
4297 | */ | |
4298 | struct meter { | |
4299 | long long int created; /* Time created. */ | |
4300 | struct list rules; /* List of "struct rule_dpif"s. */ | |
4301 | ofproto_meter_id provider_meter_id; | |
4302 | uint16_t flags; /* Meter flags. */ | |
4303 | uint16_t n_bands; /* Number of meter bands. */ | |
4304 | struct ofputil_meter_band *bands; | |
4305 | }; | |
4306 | ||
4307 | /* | |
4308 | * This is used in instruction validation at flow set-up time, | |
4309 | * as flows may not use non-existing meters. | |
4310 | * This is also used by ofproto-providers to translate OpenFlow meter_ids | |
4311 | * in METER instructions to the corresponding provider meter IDs. | |
4312 | * Return value of UINT32_MAX signifies an invalid meter. | |
4313 | */ | |
4314 | uint32_t | |
4315 | ofproto_get_provider_meter_id(const struct ofproto * ofproto, | |
4316 | uint32_t of_meter_id) | |
4317 | { | |
4318 | if (of_meter_id && of_meter_id <= ofproto->meter_features.max_meters) { | |
4319 | const struct meter *meter = ofproto->meters[of_meter_id]; | |
4320 | if (meter) { | |
4321 | return meter->provider_meter_id.uint32; | |
4322 | } | |
4323 | } | |
4324 | return UINT32_MAX; | |
4325 | } | |
4326 | ||
4327 | static void | |
4328 | meter_update(struct meter *meter, const struct ofputil_meter_config *config) | |
4329 | { | |
4330 | free(meter->bands); | |
4331 | ||
4332 | meter->flags = config->flags; | |
4333 | meter->n_bands = config->n_bands; | |
4334 | meter->bands = xmemdup(config->bands, | |
4335 | config->n_bands * sizeof *meter->bands); | |
4336 | } | |
4337 | ||
4338 | static struct meter * | |
4339 | meter_create(const struct ofputil_meter_config *config, | |
4340 | ofproto_meter_id provider_meter_id) | |
4341 | { | |
4342 | struct meter *meter; | |
4343 | ||
4344 | meter = xzalloc(sizeof *meter); | |
4345 | meter->provider_meter_id = provider_meter_id; | |
4346 | meter->created = time_msec(); | |
4347 | list_init(&meter->rules); | |
4348 | ||
4349 | meter_update(meter, config); | |
4350 | ||
4351 | return meter; | |
4352 | } | |
4353 | ||
6b3f7f02 JR |
4354 | static void |
4355 | meter_delete(struct ofproto *ofproto, uint32_t first, uint32_t last) | |
4356 | { | |
4357 | uint32_t mid; | |
4358 | for (mid = first; mid <= last; ++mid) { | |
4359 | struct meter *meter = ofproto->meters[mid]; | |
4360 | if (meter) { | |
4361 | ofproto->meters[mid] = NULL; | |
4362 | ofproto->ofproto_class->meter_del(ofproto, | |
4363 | meter->provider_meter_id); | |
4364 | free(meter->bands); | |
4365 | free(meter); | |
4366 | } | |
4367 | } | |
4368 | } | |
4369 | ||
9cae45dc JR |
4370 | static enum ofperr |
4371 | handle_add_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm) | |
4372 | { | |
4373 | ofproto_meter_id provider_meter_id = { UINT32_MAX }; | |
4374 | struct meter **meterp = &ofproto->meters[mm->meter.meter_id]; | |
4375 | enum ofperr error; | |
4376 | ||
4377 | if (*meterp) { | |
4378 | return OFPERR_OFPMMFC_METER_EXISTS; | |
4379 | } | |
4380 | ||
4381 | error = ofproto->ofproto_class->meter_set(ofproto, &provider_meter_id, | |
4382 | &mm->meter); | |
4383 | if (!error) { | |
4384 | ovs_assert(provider_meter_id.uint32 != UINT32_MAX); | |
4385 | *meterp = meter_create(&mm->meter, provider_meter_id); | |
4386 | } | |
4387 | return 0; | |
4388 | } | |
4389 | ||
4390 | static enum ofperr | |
4391 | handle_modify_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm) | |
4392 | { | |
4393 | struct meter *meter = ofproto->meters[mm->meter.meter_id]; | |
4394 | enum ofperr error; | |
4395 | ||
4396 | if (!meter) { | |
4397 | return OFPERR_OFPMMFC_UNKNOWN_METER; | |
4398 | } | |
4399 | ||
4400 | error = ofproto->ofproto_class->meter_set(ofproto, | |
4401 | &meter->provider_meter_id, | |
4402 | &mm->meter); | |
4403 | ovs_assert(meter->provider_meter_id.uint32 != UINT32_MAX); | |
4404 | if (!error) { | |
4405 | meter_update(meter, &mm->meter); | |
4406 | } | |
4407 | return error; | |
4408 | } | |
4409 | ||
4410 | static enum ofperr | |
4411 | handle_delete_meter(struct ofconn *ofconn, const struct ofp_header *oh, | |
4412 | struct ofputil_meter_mod *mm) | |
4413 | { | |
4414 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
4415 | uint32_t meter_id = mm->meter.meter_id; | |
4416 | uint32_t first, last; | |
4417 | struct list rules; | |
4418 | ||
4419 | if (meter_id == OFPM13_ALL) { | |
4420 | first = 1; | |
4421 | last = ofproto->meter_features.max_meters; | |
4422 | } else { | |
4423 | if (!meter_id || meter_id > ofproto->meter_features.max_meters) { | |
4424 | return 0; | |
4425 | } | |
4426 | first = last = meter_id; | |
4427 | } | |
4428 | ||
4429 | /* First delete the rules that use this meter. If any of those rules are | |
4430 | * currently being modified, postpone the whole operation until later. */ | |
4431 | list_init(&rules); | |
4432 | for (meter_id = first; meter_id <= last; ++meter_id) { | |
4433 | struct meter *meter = ofproto->meters[meter_id]; | |
4434 | if (meter && !list_is_empty(&meter->rules)) { | |
4435 | struct rule *rule; | |
4436 | ||
4437 | LIST_FOR_EACH (rule, meter_list_node, &meter->rules) { | |
4438 | if (rule->pending) { | |
4439 | return OFPROTO_POSTPONE; | |
4440 | } | |
4441 | list_push_back(&rules, &rule->ofproto_node); | |
4442 | } | |
4443 | } | |
4444 | } | |
4445 | if (!list_is_empty(&rules)) { | |
4446 | delete_flows__(ofproto, ofconn, oh, &rules, OFPRR_METER_DELETE); | |
4447 | } | |
4448 | ||
4449 | /* Delete the meters. */ | |
6b3f7f02 | 4450 | meter_delete(ofproto, first, last); |
9cae45dc JR |
4451 | |
4452 | return 0; | |
4453 | } | |
4454 | ||
4455 | static enum ofperr | |
4456 | handle_meter_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
4457 | { | |
4458 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
4459 | struct ofputil_meter_mod mm; | |
4460 | uint64_t bands_stub[256 / 8]; | |
4461 | struct ofpbuf bands; | |
4462 | uint32_t meter_id; | |
4463 | enum ofperr error; | |
4464 | ||
4465 | error = reject_slave_controller(ofconn); | |
4466 | if (error) { | |
4467 | return error; | |
4468 | } | |
4469 | ||
4470 | ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub); | |
4471 | ||
4472 | error = ofputil_decode_meter_mod(oh, &mm, &bands); | |
4473 | if (error) { | |
4474 | goto exit_free_bands; | |
4475 | } | |
4476 | ||
4477 | meter_id = mm.meter.meter_id; | |
4478 | ||
4479 | if (mm.command != OFPMC13_DELETE) { | |
4480 | /* Fails also when meters are not implemented by the provider. */ | |
4481 | if (!meter_id || meter_id > ofproto->meter_features.max_meters) { | |
4482 | error = OFPERR_OFPMMFC_INVALID_METER; | |
4483 | goto exit_free_bands; | |
4484 | } | |
4485 | if (mm.meter.n_bands > ofproto->meter_features.max_bands) { | |
4486 | error = OFPERR_OFPMMFC_OUT_OF_BANDS; | |
4487 | goto exit_free_bands; | |
4488 | } | |
4489 | } | |
4490 | ||
4491 | switch (mm.command) { | |
4492 | case OFPMC13_ADD: | |
4493 | error = handle_add_meter(ofproto, &mm); | |
4494 | break; | |
4495 | ||
4496 | case OFPMC13_MODIFY: | |
4497 | error = handle_modify_meter(ofproto, &mm); | |
4498 | break; | |
4499 | ||
4500 | case OFPMC13_DELETE: | |
4501 | error = handle_delete_meter(ofconn, oh, &mm); | |
4502 | break; | |
4503 | ||
4504 | default: | |
4505 | error = OFPERR_OFPMMFC_BAD_COMMAND; | |
4506 | break; | |
4507 | } | |
4508 | ||
4509 | exit_free_bands: | |
4510 | ofpbuf_uninit(&bands); | |
4511 | return error; | |
4512 | } | |
4513 | ||
4514 | static enum ofperr | |
4515 | handle_meter_features_request(struct ofconn *ofconn, | |
4516 | const struct ofp_header *request) | |
4517 | { | |
4518 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
4519 | struct ofputil_meter_features features; | |
4520 | struct ofpbuf *b; | |
4521 | ||
4522 | if (ofproto->ofproto_class->meter_get_features) { | |
4523 | ofproto->ofproto_class->meter_get_features(ofproto, &features); | |
4524 | } else { | |
4525 | memset(&features, 0, sizeof features); | |
4526 | } | |
4527 | b = ofputil_encode_meter_features_reply(&features, request); | |
4528 | ||
4529 | ofconn_send_reply(ofconn, b); | |
4530 | return 0; | |
4531 | } | |
4532 | ||
4533 | static enum ofperr | |
4534 | handle_meter_request(struct ofconn *ofconn, const struct ofp_header *request, | |
4535 | enum ofptype type) | |
4536 | { | |
4537 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
4538 | struct list replies; | |
4539 | uint64_t bands_stub[256 / 8]; | |
4540 | struct ofpbuf bands; | |
4541 | uint32_t meter_id, first, last; | |
4542 | ||
4543 | ofputil_decode_meter_request(request, &meter_id); | |
4544 | ||
4545 | if (meter_id == OFPM13_ALL) { | |
4546 | first = 1; | |
4547 | last = ofproto->meter_features.max_meters; | |
4548 | } else { | |
4549 | if (!meter_id || meter_id > ofproto->meter_features.max_meters || | |
4550 | !ofproto->meters[meter_id]) { | |
4551 | return OFPERR_OFPMMFC_UNKNOWN_METER; | |
4552 | } | |
4553 | first = last = meter_id; | |
4554 | } | |
4555 | ||
4556 | ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub); | |
4557 | ofpmp_init(&replies, request); | |
4558 | ||
4559 | for (meter_id = first; meter_id <= last; ++meter_id) { | |
4560 | struct meter *meter = ofproto->meters[meter_id]; | |
4561 | if (!meter) { | |
4562 | continue; /* Skip non-existing meters. */ | |
4563 | } | |
261bd854 | 4564 | if (type == OFPTYPE_METER_STATS_REQUEST) { |
9cae45dc JR |
4565 | struct ofputil_meter_stats stats; |
4566 | ||
4567 | stats.meter_id = meter_id; | |
4568 | ||
4569 | /* Provider sets the packet and byte counts, we do the rest. */ | |
4570 | stats.flow_count = list_size(&meter->rules); | |
4571 | calc_duration(meter->created, time_msec(), | |
4572 | &stats.duration_sec, &stats.duration_nsec); | |
4573 | stats.n_bands = meter->n_bands; | |
4574 | ofpbuf_clear(&bands); | |
4575 | stats.bands | |
4576 | = ofpbuf_put_uninit(&bands, | |
4577 | meter->n_bands * sizeof *stats.bands); | |
4578 | ||
4579 | if (!ofproto->ofproto_class->meter_get(ofproto, | |
4580 | meter->provider_meter_id, | |
4581 | &stats)) { | |
4582 | ofputil_append_meter_stats(&replies, &stats); | |
4583 | } | |
4584 | } else { /* type == OFPTYPE_METER_CONFIG_REQUEST */ | |
4585 | struct ofputil_meter_config config; | |
4586 | ||
4587 | config.meter_id = meter_id; | |
4588 | config.flags = meter->flags; | |
4589 | config.n_bands = meter->n_bands; | |
4590 | config.bands = meter->bands; | |
4591 | ofputil_append_meter_config(&replies, &config); | |
4592 | } | |
4593 | } | |
4594 | ||
4595 | ofconn_send_replies(ofconn, &replies); | |
4596 | ofpbuf_uninit(&bands); | |
4597 | return 0; | |
4598 | } | |
4599 | ||
90bf1e07 | 4600 | static enum ofperr |
d1e2cf21 | 4601 | handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg) |
064af421 | 4602 | { |
d1e2cf21 | 4603 | const struct ofp_header *oh = msg->data; |
982697a4 | 4604 | enum ofptype type; |
90bf1e07 | 4605 | enum ofperr error; |
064af421 | 4606 | |
982697a4 | 4607 | error = ofptype_decode(&type, oh); |
d1e2cf21 BP |
4608 | if (error) { |
4609 | return error; | |
4610 | } | |
064af421 | 4611 | |
982697a4 | 4612 | switch (type) { |
d1e2cf21 | 4613 | /* OpenFlow requests. */ |
982697a4 | 4614 | case OFPTYPE_ECHO_REQUEST: |
d1e2cf21 | 4615 | return handle_echo_request(ofconn, oh); |
064af421 | 4616 | |
982697a4 | 4617 | case OFPTYPE_FEATURES_REQUEST: |
d1e2cf21 | 4618 | return handle_features_request(ofconn, oh); |
064af421 | 4619 | |
982697a4 | 4620 | case OFPTYPE_GET_CONFIG_REQUEST: |
d1e2cf21 | 4621 | return handle_get_config_request(ofconn, oh); |
064af421 | 4622 | |
982697a4 BP |
4623 | case OFPTYPE_SET_CONFIG: |
4624 | return handle_set_config(ofconn, oh); | |
064af421 | 4625 | |
982697a4 BP |
4626 | case OFPTYPE_PACKET_OUT: |
4627 | return handle_packet_out(ofconn, oh); | |
064af421 | 4628 | |
982697a4 | 4629 | case OFPTYPE_PORT_MOD: |
d1e2cf21 | 4630 | return handle_port_mod(ofconn, oh); |
064af421 | 4631 | |
982697a4 | 4632 | case OFPTYPE_FLOW_MOD: |
2e4f5fcf | 4633 | return handle_flow_mod(ofconn, oh); |
064af421 | 4634 | |
9cae45dc JR |
4635 | case OFPTYPE_METER_MOD: |
4636 | return handle_meter_mod(ofconn, oh); | |
4637 | ||
982697a4 | 4638 | case OFPTYPE_BARRIER_REQUEST: |
d1e2cf21 | 4639 | return handle_barrier_request(ofconn, oh); |
064af421 | 4640 | |
6ea4776b JR |
4641 | case OFPTYPE_ROLE_REQUEST: |
4642 | return handle_role_request(ofconn, oh); | |
4643 | ||
d1e2cf21 | 4644 | /* OpenFlow replies. */ |
982697a4 | 4645 | case OFPTYPE_ECHO_REPLY: |
d1e2cf21 | 4646 | return 0; |
246e61ea | 4647 | |
d1e2cf21 | 4648 | /* Nicira extension requests. */ |
982697a4 | 4649 | case OFPTYPE_FLOW_MOD_TABLE_ID: |
6c1491fb | 4650 | return handle_nxt_flow_mod_table_id(ofconn, oh); |
d1e2cf21 | 4651 | |
982697a4 | 4652 | case OFPTYPE_SET_FLOW_FORMAT: |
d1e2cf21 BP |
4653 | return handle_nxt_set_flow_format(ofconn, oh); |
4654 | ||
982697a4 | 4655 | case OFPTYPE_SET_PACKET_IN_FORMAT: |
54834960 EJ |
4656 | return handle_nxt_set_packet_in_format(ofconn, oh); |
4657 | ||
982697a4 | 4658 | case OFPTYPE_SET_CONTROLLER_ID: |
a7349929 BP |
4659 | return handle_nxt_set_controller_id(ofconn, oh); |
4660 | ||
982697a4 | 4661 | case OFPTYPE_FLOW_AGE: |
f27f2134 BP |
4662 | /* Nothing to do. */ |
4663 | return 0; | |
4664 | ||
982697a4 | 4665 | case OFPTYPE_FLOW_MONITOR_CANCEL: |
2b07c8b1 BP |
4666 | return handle_flow_monitor_cancel(ofconn, oh); |
4667 | ||
982697a4 | 4668 | case OFPTYPE_SET_ASYNC_CONFIG: |
80d5aefd BP |
4669 | return handle_nxt_set_async_config(ofconn, oh); |
4670 | ||
349adfb2 | 4671 | /* Statistics requests. */ |
982697a4 BP |
4672 | case OFPTYPE_DESC_STATS_REQUEST: |
4673 | return handle_desc_stats_request(ofconn, oh); | |
4674 | ||
4675 | case OFPTYPE_FLOW_STATS_REQUEST: | |
4676 | return handle_flow_stats_request(ofconn, oh); | |
4677 | ||
4678 | case OFPTYPE_AGGREGATE_STATS_REQUEST: | |
4679 | return handle_aggregate_stats_request(ofconn, oh); | |
4680 | ||
4681 | case OFPTYPE_TABLE_STATS_REQUEST: | |
4682 | return handle_table_stats_request(ofconn, oh); | |
4683 | ||
4684 | case OFPTYPE_PORT_STATS_REQUEST: | |
4685 | return handle_port_stats_request(ofconn, oh); | |
4686 | ||
4687 | case OFPTYPE_QUEUE_STATS_REQUEST: | |
4688 | return handle_queue_stats_request(ofconn, oh); | |
4689 | ||
4690 | case OFPTYPE_PORT_DESC_STATS_REQUEST: | |
4691 | return handle_port_desc_stats_request(ofconn, oh); | |
4692 | ||
4693 | case OFPTYPE_FLOW_MONITOR_STATS_REQUEST: | |
4694 | return handle_flow_monitor_request(ofconn, oh); | |
4695 | ||
261bd854 BP |
4696 | case OFPTYPE_METER_STATS_REQUEST: |
4697 | case OFPTYPE_METER_CONFIG_STATS_REQUEST: | |
9cae45dc JR |
4698 | return handle_meter_request(ofconn, oh, type); |
4699 | ||
261bd854 | 4700 | case OFPTYPE_METER_FEATURES_STATS_REQUEST: |
9cae45dc JR |
4701 | return handle_meter_features_request(ofconn, oh); |
4702 | ||
2e1ae200 | 4703 | /* FIXME: Change the following once they are implemented: */ |
c545d38d | 4704 | case OFPTYPE_QUEUE_GET_CONFIG_REQUEST: |
2e1ae200 | 4705 | case OFPTYPE_GET_ASYNC_REQUEST: |
261bd854 BP |
4706 | case OFPTYPE_GROUP_STATS_REQUEST: |
4707 | case OFPTYPE_GROUP_DESC_STATS_REQUEST: | |
4708 | case OFPTYPE_GROUP_FEATURES_STATS_REQUEST: | |
4709 | case OFPTYPE_TABLE_FEATURES_STATS_REQUEST: | |
2e1ae200 JR |
4710 | return OFPERR_OFPBRC_BAD_TYPE; |
4711 | ||
982697a4 BP |
4712 | case OFPTYPE_HELLO: |
4713 | case OFPTYPE_ERROR: | |
4714 | case OFPTYPE_FEATURES_REPLY: | |
4715 | case OFPTYPE_GET_CONFIG_REPLY: | |
4716 | case OFPTYPE_PACKET_IN: | |
4717 | case OFPTYPE_FLOW_REMOVED: | |
4718 | case OFPTYPE_PORT_STATUS: | |
4719 | case OFPTYPE_BARRIER_REPLY: | |
c545d38d | 4720 | case OFPTYPE_QUEUE_GET_CONFIG_REPLY: |
982697a4 BP |
4721 | case OFPTYPE_DESC_STATS_REPLY: |
4722 | case OFPTYPE_FLOW_STATS_REPLY: | |
4723 | case OFPTYPE_QUEUE_STATS_REPLY: | |
4724 | case OFPTYPE_PORT_STATS_REPLY: | |
4725 | case OFPTYPE_TABLE_STATS_REPLY: | |
4726 | case OFPTYPE_AGGREGATE_STATS_REPLY: | |
4727 | case OFPTYPE_PORT_DESC_STATS_REPLY: | |
4728 | case OFPTYPE_ROLE_REPLY: | |
4729 | case OFPTYPE_FLOW_MONITOR_PAUSED: | |
4730 | case OFPTYPE_FLOW_MONITOR_RESUMED: | |
4731 | case OFPTYPE_FLOW_MONITOR_STATS_REPLY: | |
2e1ae200 | 4732 | case OFPTYPE_GET_ASYNC_REPLY: |
261bd854 BP |
4733 | case OFPTYPE_GROUP_STATS_REPLY: |
4734 | case OFPTYPE_GROUP_DESC_STATS_REPLY: | |
4735 | case OFPTYPE_GROUP_FEATURES_STATS_REPLY: | |
4736 | case OFPTYPE_METER_STATS_REPLY: | |
4737 | case OFPTYPE_METER_CONFIG_STATS_REPLY: | |
4738 | case OFPTYPE_METER_FEATURES_STATS_REPLY: | |
4739 | case OFPTYPE_TABLE_FEATURES_STATS_REPLY: | |
064af421 | 4740 | default: |
982697a4 | 4741 | return OFPERR_OFPBRC_BAD_TYPE; |
064af421 | 4742 | } |
d1e2cf21 | 4743 | } |
064af421 | 4744 | |
7ee20df1 | 4745 | static bool |
e03248b7 | 4746 | handle_openflow(struct ofconn *ofconn, const struct ofpbuf *ofp_msg) |
d1e2cf21 BP |
4747 | { |
4748 | int error = handle_openflow__(ofconn, ofp_msg); | |
7ee20df1 | 4749 | if (error && error != OFPROTO_POSTPONE) { |
1be5ff75 | 4750 | ofconn_send_error(ofconn, ofp_msg->data, error); |
064af421 | 4751 | } |
d1e2cf21 | 4752 | COVERAGE_INC(ofproto_recv_openflow); |
7ee20df1 BP |
4753 | return error != OFPROTO_POSTPONE; |
4754 | } | |
4755 | \f | |
4756 | /* Asynchronous operations. */ | |
4757 | ||
4758 | /* Creates and returns a new ofopgroup that is not associated with any | |
4759 | * OpenFlow connection. | |
4760 | * | |
4761 | * The caller should add operations to the returned group with | |
4762 | * ofoperation_create() and then submit it with ofopgroup_submit(). */ | |
4763 | static struct ofopgroup * | |
7024dffe | 4764 | ofopgroup_create_unattached(struct ofproto *ofproto) |
7ee20df1 BP |
4765 | { |
4766 | struct ofopgroup *group = xzalloc(sizeof *group); | |
4767 | group->ofproto = ofproto; | |
4768 | list_init(&group->ofproto_node); | |
4769 | list_init(&group->ops); | |
4770 | list_init(&group->ofconn_node); | |
4771 | return group; | |
4772 | } | |
4773 | ||
7024dffe BP |
4774 | /* Creates and returns a new ofopgroup for 'ofproto'. |
4775 | * | |
4776 | * If 'ofconn' is NULL, the new ofopgroup is not associated with any OpenFlow | |
4777 | * connection. The 'request' and 'buffer_id' arguments are ignored. | |
4778 | * | |
4779 | * If 'ofconn' is nonnull, then the new ofopgroup is associated with 'ofconn'. | |
4780 | * If the ofopgroup eventually fails, then the error reply will include | |
4781 | * 'request'. If the ofopgroup eventually succeeds, then the packet with | |
4782 | * buffer id 'buffer_id' on 'ofconn' will be sent by 'ofconn''s ofproto. | |
7ee20df1 BP |
4783 | * |
4784 | * The caller should add operations to the returned group with | |
4785 | * ofoperation_create() and then submit it with ofopgroup_submit(). */ | |
4786 | static struct ofopgroup * | |
7024dffe BP |
4787 | ofopgroup_create(struct ofproto *ofproto, struct ofconn *ofconn, |
4788 | const struct ofp_header *request, uint32_t buffer_id) | |
7ee20df1 | 4789 | { |
7024dffe BP |
4790 | struct ofopgroup *group = ofopgroup_create_unattached(ofproto); |
4791 | if (ofconn) { | |
4792 | size_t request_len = ntohs(request->length); | |
7ee20df1 | 4793 | |
cb22974d | 4794 | ovs_assert(ofconn_get_ofproto(ofconn) == ofproto); |
7ee20df1 | 4795 | |
7024dffe BP |
4796 | ofconn_add_opgroup(ofconn, &group->ofconn_node); |
4797 | group->ofconn = ofconn; | |
4798 | group->request = xmemdup(request, MIN(request_len, 64)); | |
4799 | group->buffer_id = buffer_id; | |
4800 | } | |
7ee20df1 BP |
4801 | return group; |
4802 | } | |
4803 | ||
4804 | /* Submits 'group' for processing. | |
4805 | * | |
4806 | * If 'group' contains no operations (e.g. none were ever added, or all of the | |
4807 | * ones that were added completed synchronously), then it is destroyed | |
4808 | * immediately. Otherwise it is added to the ofproto's list of pending | |
4809 | * groups. */ | |
4810 | static void | |
4811 | ofopgroup_submit(struct ofopgroup *group) | |
4812 | { | |
e615b0a3 BP |
4813 | if (!group->n_running) { |
4814 | ofopgroup_complete(group); | |
7ee20df1 BP |
4815 | } else { |
4816 | list_push_back(&group->ofproto->pending, &group->ofproto_node); | |
dd5616b3 | 4817 | group->ofproto->n_pending++; |
7ee20df1 BP |
4818 | } |
4819 | } | |
4820 | ||
4821 | static void | |
e615b0a3 | 4822 | ofopgroup_complete(struct ofopgroup *group) |
7ee20df1 | 4823 | { |
e615b0a3 | 4824 | struct ofproto *ofproto = group->ofproto; |
2b07c8b1 BP |
4825 | |
4826 | struct ofconn *abbrev_ofconn; | |
4827 | ovs_be32 abbrev_xid; | |
4828 | ||
e615b0a3 BP |
4829 | struct ofoperation *op, *next_op; |
4830 | int error; | |
4831 | ||
cb22974d | 4832 | ovs_assert(!group->n_running); |
e615b0a3 BP |
4833 | |
4834 | error = 0; | |
4835 | LIST_FOR_EACH (op, group_node, &group->ops) { | |
4836 | if (op->error) { | |
4837 | error = op->error; | |
4838 | break; | |
4839 | } | |
4840 | } | |
4841 | ||
4842 | if (!error && group->ofconn && group->buffer_id != UINT32_MAX) { | |
4843 | LIST_FOR_EACH (op, group_node, &group->ops) { | |
4844 | if (op->type != OFOPERATION_DELETE) { | |
4845 | struct ofpbuf *packet; | |
4e022ec0 | 4846 | ofp_port_t in_port; |
e615b0a3 BP |
4847 | |
4848 | error = ofconn_pktbuf_retrieve(group->ofconn, group->buffer_id, | |
4849 | &packet, &in_port); | |
4850 | if (packet) { | |
cb22974d | 4851 | ovs_assert(!error); |
e615b0a3 BP |
4852 | error = rule_execute(op->rule, in_port, packet); |
4853 | } | |
4854 | break; | |
4855 | } | |
4856 | } | |
4857 | } | |
4858 | ||
2b07c8b1 BP |
4859 | if (!error && !list_is_empty(&group->ofconn_node)) { |
4860 | abbrev_ofconn = group->ofconn; | |
4861 | abbrev_xid = group->request->xid; | |
4862 | } else { | |
4863 | abbrev_ofconn = NULL; | |
4864 | abbrev_xid = htonl(0); | |
4865 | } | |
e615b0a3 BP |
4866 | LIST_FOR_EACH_SAFE (op, next_op, group_node, &group->ops) { |
4867 | struct rule *rule = op->rule; | |
2b07c8b1 | 4868 | |
644e2a7c BP |
4869 | /* We generally want to report the change to active OpenFlow flow |
4870 | monitors (e.g. NXST_FLOW_MONITOR). There are three exceptions: | |
4871 | ||
4872 | - The operation failed. | |
4873 | ||
4874 | - The affected rule is not visible to controllers. | |
4875 | ||
4876 | - The operation's only effect was to update rule->modified. */ | |
4877 | if (!(op->error | |
4878 | || ofproto_rule_is_hidden(rule) | |
4879 | || (op->type == OFOPERATION_MODIFY | |
4880 | && op->ofpacts | |
4881 | && rule->flow_cookie == op->flow_cookie))) { | |
2b07c8b1 BP |
4882 | /* Check that we can just cast from ofoperation_type to |
4883 | * nx_flow_update_event. */ | |
1ec3db6f EJ |
4884 | BUILD_ASSERT_DECL((enum nx_flow_update_event) OFOPERATION_ADD |
4885 | == NXFME_ADDED); | |
4886 | BUILD_ASSERT_DECL((enum nx_flow_update_event) OFOPERATION_DELETE | |
4887 | == NXFME_DELETED); | |
4888 | BUILD_ASSERT_DECL((enum nx_flow_update_event) OFOPERATION_MODIFY | |
4889 | == NXFME_MODIFIED); | |
2b07c8b1 BP |
4890 | |
4891 | ofmonitor_report(ofproto->connmgr, rule, | |
4892 | (enum nx_flow_update_event) op->type, | |
4893 | op->reason, abbrev_ofconn, abbrev_xid); | |
4894 | } | |
4895 | ||
e615b0a3 BP |
4896 | rule->pending = NULL; |
4897 | ||
4898 | switch (op->type) { | |
4899 | case OFOPERATION_ADD: | |
4900 | if (!op->error) { | |
5cb7a798 BP |
4901 | uint16_t vid_mask; |
4902 | ||
e615b0a3 | 4903 | ofproto_rule_destroy__(op->victim); |
5cb7a798 BP |
4904 | vid_mask = minimask_get_vid_mask(&rule->cr.match.mask); |
4905 | if (vid_mask == VLAN_VID_MASK) { | |
e615b0a3 | 4906 | if (ofproto->vlan_bitmap) { |
5cb7a798 | 4907 | uint16_t vid = miniflow_get_vid(&rule->cr.match.flow); |
e615b0a3 BP |
4908 | if (!bitmap_is_set(ofproto->vlan_bitmap, vid)) { |
4909 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
4910 | ofproto->vlans_changed = true; | |
4911 | } | |
4912 | } else { | |
4913 | ofproto->vlans_changed = true; | |
4914 | } | |
4915 | } | |
4916 | } else { | |
4917 | oftable_substitute_rule(rule, op->victim); | |
4918 | ofproto_rule_destroy__(rule); | |
4919 | } | |
4920 | break; | |
4921 | ||
4922 | case OFOPERATION_DELETE: | |
cb22974d | 4923 | ovs_assert(!op->error); |
e615b0a3 BP |
4924 | ofproto_rule_destroy__(rule); |
4925 | op->rule = NULL; | |
4926 | break; | |
4927 | ||
4928 | case OFOPERATION_MODIFY: | |
4929 | if (!op->error) { | |
4930 | rule->modified = time_msec(); | |
4931 | } else { | |
98eaac36 | 4932 | ofproto_rule_change_cookie(ofproto, rule, op->flow_cookie); |
08043761 BP |
4933 | if (op->ofpacts) { |
4934 | free(rule->ofpacts); | |
4935 | rule->ofpacts = op->ofpacts; | |
4936 | rule->ofpacts_len = op->ofpacts_len; | |
4937 | op->ofpacts = NULL; | |
4938 | op->ofpacts_len = 0; | |
4939 | } | |
e615b0a3 BP |
4940 | } |
4941 | break; | |
4942 | ||
4943 | default: | |
4944 | NOT_REACHED(); | |
4945 | } | |
4946 | ||
4947 | ofoperation_destroy(op); | |
4948 | } | |
4949 | ||
2b07c8b1 BP |
4950 | ofmonitor_flush(ofproto->connmgr); |
4951 | ||
7ee20df1 | 4952 | if (!list_is_empty(&group->ofproto_node)) { |
cb22974d | 4953 | ovs_assert(ofproto->n_pending > 0); |
e615b0a3 | 4954 | ofproto->n_pending--; |
7ee20df1 BP |
4955 | list_remove(&group->ofproto_node); |
4956 | } | |
4957 | if (!list_is_empty(&group->ofconn_node)) { | |
4958 | list_remove(&group->ofconn_node); | |
e615b0a3 BP |
4959 | if (error) { |
4960 | ofconn_send_error(group->ofconn, group->request, error); | |
7ee20df1 | 4961 | } |
e615b0a3 | 4962 | connmgr_retry(ofproto->connmgr); |
7ee20df1 BP |
4963 | } |
4964 | free(group->request); | |
4965 | free(group); | |
4966 | } | |
4967 | ||
4968 | /* Initiates a new operation on 'rule', of the specified 'type', within | |
a7d94793 BP |
4969 | * 'group'. Prior to calling, 'rule' must not have any pending operation. |
4970 | * | |
2b07c8b1 BP |
4971 | * For a 'type' of OFOPERATION_DELETE, 'reason' should specify the reason that |
4972 | * the flow is being deleted. For other 'type's, 'reason' is ignored (use 0). | |
4973 | * | |
a7d94793 BP |
4974 | * Returns the newly created ofoperation (which is also available as |
4975 | * rule->pending). */ | |
4976 | static struct ofoperation * | |
7ee20df1 | 4977 | ofoperation_create(struct ofopgroup *group, struct rule *rule, |
2b07c8b1 BP |
4978 | enum ofoperation_type type, |
4979 | enum ofp_flow_removed_reason reason) | |
7ee20df1 | 4980 | { |
a5b8d268 | 4981 | struct ofproto *ofproto = group->ofproto; |
7ee20df1 BP |
4982 | struct ofoperation *op; |
4983 | ||
cb22974d | 4984 | ovs_assert(!rule->pending); |
7ee20df1 BP |
4985 | |
4986 | op = rule->pending = xzalloc(sizeof *op); | |
4987 | op->group = group; | |
4988 | list_push_back(&group->ops, &op->group_node); | |
4989 | op->rule = rule; | |
4990 | op->type = type; | |
2b07c8b1 | 4991 | op->reason = reason; |
7ee20df1 BP |
4992 | op->flow_cookie = rule->flow_cookie; |
4993 | ||
e615b0a3 BP |
4994 | group->n_running++; |
4995 | ||
7ee20df1 | 4996 | if (type == OFOPERATION_DELETE) { |
a5b8d268 | 4997 | hmap_insert(&ofproto->deletions, &op->hmap_node, |
7ee20df1 BP |
4998 | cls_rule_hash(&rule->cr, rule->table_id)); |
4999 | } | |
a7d94793 BP |
5000 | |
5001 | return op; | |
7ee20df1 BP |
5002 | } |
5003 | ||
5004 | static void | |
5005 | ofoperation_destroy(struct ofoperation *op) | |
5006 | { | |
5007 | struct ofopgroup *group = op->group; | |
5008 | ||
5009 | if (op->rule) { | |
5010 | op->rule->pending = NULL; | |
5011 | } | |
5012 | if (op->type == OFOPERATION_DELETE) { | |
5013 | hmap_remove(&group->ofproto->deletions, &op->hmap_node); | |
5014 | } | |
5015 | list_remove(&op->group_node); | |
f25d0cf3 | 5016 | free(op->ofpacts); |
7ee20df1 | 5017 | free(op); |
7ee20df1 BP |
5018 | } |
5019 | ||
5020 | /* Indicates that 'op' completed with status 'error', which is either 0 to | |
90bf1e07 | 5021 | * indicate success or an OpenFlow error code on failure. |
7ee20df1 | 5022 | * |
a6a62132 BP |
5023 | * If 'error' is 0, indicating success, the operation will be committed |
5024 | * permanently to the flow table. There is one interesting subcase: | |
5025 | * | |
5026 | * - If 'op' is an "add flow" operation that is replacing an existing rule in | |
5027 | * the flow table (the "victim" rule) by a new one, then the caller must | |
5028 | * have uninitialized any derived state in the victim rule, as in step 5 in | |
5029 | * the "Life Cycle" in ofproto/ofproto-provider.h. ofoperation_complete() | |
5030 | * performs steps 6 and 7 for the victim rule, most notably by calling its | |
5031 | * ->rule_dealloc() function. | |
5032 | * | |
5033 | * If 'error' is nonzero, then generally the operation will be rolled back: | |
5034 | * | |
5035 | * - If 'op' is an "add flow" operation, ofproto removes the new rule or | |
5036 | * restores the original rule. The caller must have uninitialized any | |
5037 | * derived state in the new rule, as in step 5 of in the "Life Cycle" in | |
5038 | * ofproto/ofproto-provider.h. ofoperation_complete() performs steps 6 and | |
5039 | * and 7 for the new rule, calling its ->rule_dealloc() function. | |
5040 | * | |
5041 | * - If 'op' is a "modify flow" operation, ofproto restores the original | |
5042 | * actions. | |
5043 | * | |
5044 | * - 'op' must not be a "delete flow" operation. Removing a rule is not | |
5045 | * allowed to fail. It must always succeed. | |
7ee20df1 | 5046 | * |
5bee6e26 JP |
5047 | * Please see the large comment in ofproto/ofproto-provider.h titled |
5048 | * "Asynchronous Operation Support" for more information. */ | |
7ee20df1 | 5049 | void |
90bf1e07 | 5050 | ofoperation_complete(struct ofoperation *op, enum ofperr error) |
7ee20df1 BP |
5051 | { |
5052 | struct ofopgroup *group = op->group; | |
7ee20df1 | 5053 | |
cb22974d BP |
5054 | ovs_assert(op->rule->pending == op); |
5055 | ovs_assert(group->n_running > 0); | |
5056 | ovs_assert(!error || op->type != OFOPERATION_DELETE); | |
9075907c | 5057 | |
e615b0a3 BP |
5058 | op->error = error; |
5059 | if (!--group->n_running && !list_is_empty(&group->ofproto_node)) { | |
5060 | ofopgroup_complete(group); | |
7ee20df1 | 5061 | } |
7ee20df1 BP |
5062 | } |
5063 | ||
5064 | struct rule * | |
5065 | ofoperation_get_victim(struct ofoperation *op) | |
5066 | { | |
cb22974d | 5067 | ovs_assert(op->type == OFOPERATION_ADD); |
7ee20df1 | 5068 | return op->victim; |
064af421 BP |
5069 | } |
5070 | \f | |
064af421 | 5071 | static uint64_t |
fa60c019 | 5072 | pick_datapath_id(const struct ofproto *ofproto) |
064af421 | 5073 | { |
fa60c019 | 5074 | const struct ofport *port; |
064af421 | 5075 | |
abe529af | 5076 | port = ofproto_get_port(ofproto, OFPP_LOCAL); |
fa60c019 BP |
5077 | if (port) { |
5078 | uint8_t ea[ETH_ADDR_LEN]; | |
5079 | int error; | |
5080 | ||
5081 | error = netdev_get_etheraddr(port->netdev, ea); | |
064af421 BP |
5082 | if (!error) { |
5083 | return eth_addr_to_uint64(ea); | |
5084 | } | |
fbfa2911 BP |
5085 | VLOG_WARN("%s: could not get MAC address for %s (%s)", |
5086 | ofproto->name, netdev_get_name(port->netdev), | |
10a89ef0 | 5087 | ovs_strerror(error)); |
064af421 | 5088 | } |
fa60c019 | 5089 | return ofproto->fallback_dpid; |
064af421 BP |
5090 | } |
5091 | ||
5092 | static uint64_t | |
5093 | pick_fallback_dpid(void) | |
5094 | { | |
5095 | uint8_t ea[ETH_ADDR_LEN]; | |
70150daf | 5096 | eth_addr_nicira_random(ea); |
064af421 BP |
5097 | return eth_addr_to_uint64(ea); |
5098 | } | |
5099 | \f | |
254750ce BP |
5100 | /* Table overflow policy. */ |
5101 | ||
ad3efdcb EJ |
5102 | /* Chooses and updates 'rulep' with a rule to evict from 'table'. Sets 'rulep' |
5103 | * to NULL if the table is not configured to evict rules or if the table | |
5104 | * contains no evictable rules. (Rules with a readlock on their evict rwlock, | |
5105 | * or with no timeouts are not evictable.) */ | |
5106 | static bool | |
5107 | choose_rule_to_evict(struct oftable *table, struct rule **rulep) | |
254750ce BP |
5108 | { |
5109 | struct eviction_group *evg; | |
5110 | ||
ad3efdcb | 5111 | *rulep = NULL; |
254750ce | 5112 | if (!table->eviction_fields) { |
ad3efdcb | 5113 | return false; |
254750ce BP |
5114 | } |
5115 | ||
5116 | /* In the common case, the outer and inner loops here will each be entered | |
5117 | * exactly once: | |
5118 | * | |
5119 | * - The inner loop normally "return"s in its first iteration. If the | |
5120 | * eviction group has any evictable rules, then it always returns in | |
5121 | * some iteration. | |
5122 | * | |
5123 | * - The outer loop only iterates more than once if the largest eviction | |
5124 | * group has no evictable rules. | |
5125 | * | |
5126 | * - The outer loop can exit only if table's 'max_flows' is all filled up | |
5127 | * by unevictable rules'. */ | |
5128 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { | |
5129 | struct rule *rule; | |
5130 | ||
5131 | HEAP_FOR_EACH (rule, evg_node, &evg->rules) { | |
ad3efdcb EJ |
5132 | if (!ovs_rwlock_trywrlock(&rule->evict)) { |
5133 | *rulep = rule; | |
5134 | return true; | |
254750ce BP |
5135 | } |
5136 | } | |
5137 | } | |
5138 | ||
ad3efdcb | 5139 | return false; |
254750ce BP |
5140 | } |
5141 | ||
5142 | /* Searches 'ofproto' for tables that have more flows than their configured | |
5143 | * maximum and that have flow eviction enabled, and evicts as many flows as | |
5144 | * necessary and currently feasible from them. | |
5145 | * | |
5146 | * This triggers only when an OpenFlow table has N flows in it and then the | |
5147 | * client configures a maximum number of flows less than N. */ | |
5148 | static void | |
5149 | ofproto_evict(struct ofproto *ofproto) | |
5150 | { | |
5151 | struct ofopgroup *group; | |
5152 | struct oftable *table; | |
5153 | ||
5154 | group = ofopgroup_create_unattached(ofproto); | |
5155 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
0b4f2078 | 5156 | while (table->eviction_fields) { |
254750ce | 5157 | struct rule *rule; |
0b4f2078 EJ |
5158 | size_t n_rules; |
5159 | ||
5160 | ovs_rwlock_rdlock(&table->cls.rwlock); | |
5161 | n_rules = classifier_count(&table->cls); | |
5162 | ovs_rwlock_unlock(&table->cls.rwlock); | |
5163 | ||
5164 | if (n_rules <= table->max_flows) { | |
5165 | break; | |
5166 | } | |
254750ce | 5167 | |
ad3efdcb EJ |
5168 | if (!choose_rule_to_evict(table, &rule)) { |
5169 | break; | |
5170 | } | |
5171 | ||
5172 | if (rule->pending) { | |
5173 | ovs_rwlock_unlock(&rule->evict); | |
254750ce BP |
5174 | break; |
5175 | } | |
5176 | ||
2b07c8b1 BP |
5177 | ofoperation_create(group, rule, |
5178 | OFOPERATION_DELETE, OFPRR_EVICTION); | |
254750ce BP |
5179 | oftable_remove_rule(rule); |
5180 | ofproto->ofproto_class->rule_destruct(rule); | |
5181 | } | |
5182 | } | |
5183 | ofopgroup_submit(group); | |
5184 | } | |
5185 | \f | |
5186 | /* Eviction groups. */ | |
5187 | ||
5188 | /* Returns the priority to use for an eviction_group that contains 'n_rules' | |
5189 | * rules. The priority contains low-order random bits to ensure that eviction | |
5190 | * groups with the same number of rules are prioritized randomly. */ | |
5191 | static uint32_t | |
5192 | eviction_group_priority(size_t n_rules) | |
5193 | { | |
5194 | uint16_t size = MIN(UINT16_MAX, n_rules); | |
5195 | return (size << 16) | random_uint16(); | |
5196 | } | |
5197 | ||
5198 | /* Updates 'evg', an eviction_group within 'table', following a change that | |
5199 | * adds or removes rules in 'evg'. */ | |
5200 | static void | |
5201 | eviction_group_resized(struct oftable *table, struct eviction_group *evg) | |
5202 | { | |
5203 | heap_change(&table->eviction_groups_by_size, &evg->size_node, | |
5204 | eviction_group_priority(heap_count(&evg->rules))); | |
5205 | } | |
5206 | ||
5207 | /* Destroys 'evg', an eviction_group within 'table': | |
5208 | * | |
5209 | * - Removes all the rules, if any, from 'evg'. (It doesn't destroy the | |
5210 | * rules themselves, just removes them from the eviction group.) | |
5211 | * | |
5212 | * - Removes 'evg' from 'table'. | |
5213 | * | |
5214 | * - Frees 'evg'. */ | |
5215 | static void | |
5216 | eviction_group_destroy(struct oftable *table, struct eviction_group *evg) | |
5217 | { | |
5218 | while (!heap_is_empty(&evg->rules)) { | |
5219 | struct rule *rule; | |
5220 | ||
5221 | rule = CONTAINER_OF(heap_pop(&evg->rules), struct rule, evg_node); | |
5222 | rule->eviction_group = NULL; | |
5223 | } | |
5224 | hmap_remove(&table->eviction_groups_by_id, &evg->id_node); | |
5225 | heap_remove(&table->eviction_groups_by_size, &evg->size_node); | |
5226 | heap_destroy(&evg->rules); | |
5227 | free(evg); | |
5228 | } | |
5229 | ||
5230 | /* Removes 'rule' from its eviction group, if any. */ | |
5231 | static void | |
5232 | eviction_group_remove_rule(struct rule *rule) | |
5233 | { | |
5234 | if (rule->eviction_group) { | |
5235 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
5236 | struct eviction_group *evg = rule->eviction_group; | |
5237 | ||
5238 | rule->eviction_group = NULL; | |
5239 | heap_remove(&evg->rules, &rule->evg_node); | |
5240 | if (heap_is_empty(&evg->rules)) { | |
5241 | eviction_group_destroy(table, evg); | |
5242 | } else { | |
5243 | eviction_group_resized(table, evg); | |
5244 | } | |
5245 | } | |
5246 | } | |
5247 | ||
5248 | /* Hashes the 'rule''s values for the eviction_fields of 'rule''s table, and | |
5249 | * returns the hash value. */ | |
5250 | static uint32_t | |
5251 | eviction_group_hash_rule(struct rule *rule) | |
5252 | { | |
5253 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
5254 | const struct mf_subfield *sf; | |
5cb7a798 | 5255 | struct flow flow; |
254750ce BP |
5256 | uint32_t hash; |
5257 | ||
5258 | hash = table->eviction_group_id_basis; | |
5cb7a798 | 5259 | miniflow_expand(&rule->cr.match.flow, &flow); |
254750ce BP |
5260 | for (sf = table->eviction_fields; |
5261 | sf < &table->eviction_fields[table->n_eviction_fields]; | |
5262 | sf++) | |
5263 | { | |
5cb7a798 | 5264 | if (mf_are_prereqs_ok(sf->field, &flow)) { |
254750ce BP |
5265 | union mf_value value; |
5266 | ||
5cb7a798 | 5267 | mf_get_value(sf->field, &flow, &value); |
254750ce BP |
5268 | if (sf->ofs) { |
5269 | bitwise_zero(&value, sf->field->n_bytes, 0, sf->ofs); | |
5270 | } | |
5271 | if (sf->ofs + sf->n_bits < sf->field->n_bytes * 8) { | |
5272 | unsigned int start = sf->ofs + sf->n_bits; | |
5273 | bitwise_zero(&value, sf->field->n_bytes, start, | |
5274 | sf->field->n_bytes * 8 - start); | |
5275 | } | |
5276 | hash = hash_bytes(&value, sf->field->n_bytes, hash); | |
5277 | } else { | |
5278 | hash = hash_int(hash, 0); | |
5279 | } | |
5280 | } | |
5281 | ||
5282 | return hash; | |
5283 | } | |
5284 | ||
5285 | /* Returns an eviction group within 'table' with the given 'id', creating one | |
5286 | * if necessary. */ | |
5287 | static struct eviction_group * | |
5288 | eviction_group_find(struct oftable *table, uint32_t id) | |
5289 | { | |
5290 | struct eviction_group *evg; | |
5291 | ||
5292 | HMAP_FOR_EACH_WITH_HASH (evg, id_node, id, &table->eviction_groups_by_id) { | |
5293 | return evg; | |
5294 | } | |
5295 | ||
5296 | evg = xmalloc(sizeof *evg); | |
5297 | hmap_insert(&table->eviction_groups_by_id, &evg->id_node, id); | |
5298 | heap_insert(&table->eviction_groups_by_size, &evg->size_node, | |
5299 | eviction_group_priority(0)); | |
5300 | heap_init(&evg->rules); | |
5301 | ||
5302 | return evg; | |
5303 | } | |
5304 | ||
5305 | /* Returns an eviction priority for 'rule'. The return value should be | |
5306 | * interpreted so that higher priorities make a rule more attractive candidates | |
5307 | * for eviction. */ | |
5308 | static uint32_t | |
5309 | rule_eviction_priority(struct rule *rule) | |
5310 | { | |
5311 | long long int hard_expiration; | |
5312 | long long int idle_expiration; | |
5313 | long long int expiration; | |
5314 | uint32_t expiration_offset; | |
5315 | ||
5316 | /* Calculate time of expiration. */ | |
a3779dbc | 5317 | ovs_mutex_lock(&rule->timeout_mutex); |
254750ce BP |
5318 | hard_expiration = (rule->hard_timeout |
5319 | ? rule->modified + rule->hard_timeout * 1000 | |
5320 | : LLONG_MAX); | |
5321 | idle_expiration = (rule->idle_timeout | |
5322 | ? rule->used + rule->idle_timeout * 1000 | |
5323 | : LLONG_MAX); | |
5324 | expiration = MIN(hard_expiration, idle_expiration); | |
a3779dbc | 5325 | ovs_mutex_unlock(&rule->timeout_mutex); |
254750ce BP |
5326 | if (expiration == LLONG_MAX) { |
5327 | return 0; | |
5328 | } | |
5329 | ||
5330 | /* Calculate the time of expiration as a number of (approximate) seconds | |
5331 | * after program startup. | |
5332 | * | |
5333 | * This should work OK for program runs that last UINT32_MAX seconds or | |
5334 | * less. Therefore, please restart OVS at least once every 136 years. */ | |
5335 | expiration_offset = (expiration >> 10) - (time_boot_msec() >> 10); | |
5336 | ||
5337 | /* Invert the expiration offset because we're using a max-heap. */ | |
5338 | return UINT32_MAX - expiration_offset; | |
5339 | } | |
5340 | ||
5341 | /* Adds 'rule' to an appropriate eviction group for its oftable's | |
5342 | * configuration. Does nothing if 'rule''s oftable doesn't have eviction | |
5343 | * enabled, or if 'rule' is a permanent rule (one that will never expire on its | |
5344 | * own). | |
5345 | * | |
5346 | * The caller must ensure that 'rule' is not already in an eviction group. */ | |
5347 | static void | |
5348 | eviction_group_add_rule(struct rule *rule) | |
5349 | { | |
5350 | struct ofproto *ofproto = rule->ofproto; | |
5351 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
a3779dbc | 5352 | bool has_timeout; |
254750ce | 5353 | |
a3779dbc EJ |
5354 | ovs_mutex_lock(&rule->timeout_mutex); |
5355 | has_timeout = rule->hard_timeout || rule->idle_timeout; | |
5356 | ovs_mutex_unlock(&rule->timeout_mutex); | |
5357 | ||
5358 | if (table->eviction_fields && has_timeout) { | |
254750ce BP |
5359 | struct eviction_group *evg; |
5360 | ||
5361 | evg = eviction_group_find(table, eviction_group_hash_rule(rule)); | |
5362 | ||
5363 | rule->eviction_group = evg; | |
5364 | heap_insert(&evg->rules, &rule->evg_node, | |
5365 | rule_eviction_priority(rule)); | |
5366 | eviction_group_resized(table, evg); | |
5367 | } | |
5368 | } | |
5369 | \f | |
d0918789 BP |
5370 | /* oftables. */ |
5371 | ||
5372 | /* Initializes 'table'. */ | |
5373 | static void | |
5374 | oftable_init(struct oftable *table) | |
5375 | { | |
5c67e4af | 5376 | memset(table, 0, sizeof *table); |
d0918789 | 5377 | classifier_init(&table->cls); |
ec1c5c7e | 5378 | table->max_flows = UINT_MAX; |
d0918789 BP |
5379 | } |
5380 | ||
254750ce | 5381 | /* Destroys 'table', including its classifier and eviction groups. |
d0918789 BP |
5382 | * |
5383 | * The caller is responsible for freeing 'table' itself. */ | |
5384 | static void | |
5385 | oftable_destroy(struct oftable *table) | |
5386 | { | |
0b4f2078 | 5387 | ovs_rwlock_rdlock(&table->cls.rwlock); |
cb22974d | 5388 | ovs_assert(classifier_is_empty(&table->cls)); |
0b4f2078 | 5389 | ovs_rwlock_unlock(&table->cls.rwlock); |
254750ce | 5390 | oftable_disable_eviction(table); |
d0918789 | 5391 | classifier_destroy(&table->cls); |
254750ce BP |
5392 | free(table->name); |
5393 | } | |
5394 | ||
5395 | /* Changes the name of 'table' to 'name'. If 'name' is NULL or the empty | |
5396 | * string, then 'table' will use its default name. | |
5397 | * | |
5398 | * This only affects the name exposed for a table exposed through the OpenFlow | |
5399 | * OFPST_TABLE (as printed by "ovs-ofctl dump-tables"). */ | |
5400 | static void | |
5401 | oftable_set_name(struct oftable *table, const char *name) | |
5402 | { | |
5403 | if (name && name[0]) { | |
5404 | int len = strnlen(name, OFP_MAX_TABLE_NAME_LEN); | |
5405 | if (!table->name || strncmp(name, table->name, len)) { | |
5406 | free(table->name); | |
5407 | table->name = xmemdup0(name, len); | |
5408 | } | |
5409 | } else { | |
5410 | free(table->name); | |
5411 | table->name = NULL; | |
5412 | } | |
5413 | } | |
5414 | ||
5415 | /* oftables support a choice of two policies when adding a rule would cause the | |
5416 | * number of flows in the table to exceed the configured maximum number: either | |
5417 | * they can refuse to add the new flow or they can evict some existing flow. | |
5418 | * This function configures the former policy on 'table'. */ | |
5419 | static void | |
5420 | oftable_disable_eviction(struct oftable *table) | |
5421 | { | |
5422 | if (table->eviction_fields) { | |
5423 | struct eviction_group *evg, *next; | |
5424 | ||
5425 | HMAP_FOR_EACH_SAFE (evg, next, id_node, | |
5426 | &table->eviction_groups_by_id) { | |
5427 | eviction_group_destroy(table, evg); | |
5428 | } | |
5429 | hmap_destroy(&table->eviction_groups_by_id); | |
5430 | heap_destroy(&table->eviction_groups_by_size); | |
5431 | ||
5432 | free(table->eviction_fields); | |
5433 | table->eviction_fields = NULL; | |
5434 | table->n_eviction_fields = 0; | |
5435 | } | |
5436 | } | |
5437 | ||
5438 | /* oftables support a choice of two policies when adding a rule would cause the | |
5439 | * number of flows in the table to exceed the configured maximum number: either | |
5440 | * they can refuse to add the new flow or they can evict some existing flow. | |
5441 | * This function configures the latter policy on 'table', with fairness based | |
5442 | * on the values of the 'n_fields' fields specified in 'fields'. (Specifying | |
5443 | * 'n_fields' as 0 disables fairness.) */ | |
5444 | static void | |
5445 | oftable_enable_eviction(struct oftable *table, | |
5446 | const struct mf_subfield *fields, size_t n_fields) | |
5447 | { | |
5448 | struct cls_cursor cursor; | |
5449 | struct rule *rule; | |
5450 | ||
5451 | if (table->eviction_fields | |
5452 | && n_fields == table->n_eviction_fields | |
5453 | && (!n_fields | |
5454 | || !memcmp(fields, table->eviction_fields, | |
5455 | n_fields * sizeof *fields))) { | |
5456 | /* No change. */ | |
5457 | return; | |
5458 | } | |
5459 | ||
5460 | oftable_disable_eviction(table); | |
5461 | ||
5462 | table->n_eviction_fields = n_fields; | |
5463 | table->eviction_fields = xmemdup(fields, n_fields * sizeof *fields); | |
5464 | ||
5465 | table->eviction_group_id_basis = random_uint32(); | |
5466 | hmap_init(&table->eviction_groups_by_id); | |
5467 | heap_init(&table->eviction_groups_by_size); | |
5468 | ||
0b4f2078 | 5469 | ovs_rwlock_rdlock(&table->cls.rwlock); |
254750ce BP |
5470 | cls_cursor_init(&cursor, &table->cls, NULL); |
5471 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { | |
5472 | eviction_group_add_rule(rule); | |
5473 | } | |
0b4f2078 | 5474 | ovs_rwlock_unlock(&table->cls.rwlock); |
d0918789 BP |
5475 | } |
5476 | ||
5477 | /* Removes 'rule' from the oftable that contains it. */ | |
5478 | static void | |
0b4f2078 | 5479 | oftable_remove_rule__(struct ofproto *ofproto, struct classifier *cls, |
47b52c71 BP |
5480 | struct rule *rule) |
5481 | OVS_REQ_WRLOCK(cls->rwlock) OVS_RELEASES(rule->evict) | |
d0918789 | 5482 | { |
0b4f2078 | 5483 | classifier_remove(cls, &rule->cr); |
9cae45dc JR |
5484 | if (rule->meter_id) { |
5485 | list_remove(&rule->meter_list_node); | |
5486 | } | |
98eaac36 | 5487 | cookies_remove(ofproto, rule); |
254750ce | 5488 | eviction_group_remove_rule(rule); |
83b16b98 | 5489 | ovs_mutex_lock(&ofproto->expirable_mutex); |
e503cc19 SH |
5490 | if (!list_is_empty(&rule->expirable)) { |
5491 | list_remove(&rule->expirable); | |
5492 | } | |
83b16b98 | 5493 | ovs_mutex_unlock(&ofproto->expirable_mutex); |
9cae45dc JR |
5494 | if (!list_is_empty(&rule->meter_list_node)) { |
5495 | list_remove(&rule->meter_list_node); | |
5496 | } | |
c278bb82 | 5497 | ovs_rwlock_unlock(&rule->evict); |
d0918789 BP |
5498 | } |
5499 | ||
0b4f2078 EJ |
5500 | static void |
5501 | oftable_remove_rule(struct rule *rule) | |
5502 | { | |
5503 | struct ofproto *ofproto = rule->ofproto; | |
5504 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
5505 | ||
5506 | ovs_rwlock_wrlock(&table->cls.rwlock); | |
5507 | oftable_remove_rule__(ofproto, &table->cls, rule); | |
5508 | ovs_rwlock_unlock(&table->cls.rwlock); | |
5509 | } | |
5510 | ||
d0918789 BP |
5511 | /* Inserts 'rule' into its oftable. Removes any existing rule from 'rule''s |
5512 | * oftable that has an identical cls_rule. Returns the rule that was removed, | |
5513 | * if any, and otherwise NULL. */ | |
5514 | static struct rule * | |
5515 | oftable_replace_rule(struct rule *rule) | |
5516 | { | |
5517 | struct ofproto *ofproto = rule->ofproto; | |
5518 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
254750ce | 5519 | struct rule *victim; |
a3779dbc EJ |
5520 | bool may_expire; |
5521 | ||
5522 | ovs_mutex_lock(&rule->timeout_mutex); | |
5523 | may_expire = rule->hard_timeout || rule->idle_timeout; | |
5524 | ovs_mutex_unlock(&rule->timeout_mutex); | |
e503cc19 SH |
5525 | |
5526 | if (may_expire) { | |
83b16b98 | 5527 | ovs_mutex_lock(&ofproto->expirable_mutex); |
e503cc19 | 5528 | list_insert(&ofproto->expirable, &rule->expirable); |
83b16b98 | 5529 | ovs_mutex_unlock(&ofproto->expirable_mutex); |
e503cc19 | 5530 | } |
98eaac36 | 5531 | cookies_insert(ofproto, rule); |
9cae45dc JR |
5532 | if (rule->meter_id) { |
5533 | struct meter *meter = ofproto->meters[rule->meter_id]; | |
5534 | list_insert(&meter->rules, &rule->meter_list_node); | |
5535 | } | |
0b4f2078 | 5536 | ovs_rwlock_wrlock(&table->cls.rwlock); |
254750ce | 5537 | victim = rule_from_cls_rule(classifier_replace(&table->cls, &rule->cr)); |
0b4f2078 | 5538 | ovs_rwlock_unlock(&table->cls.rwlock); |
254750ce | 5539 | if (victim) { |
9cae45dc JR |
5540 | if (victim->meter_id) { |
5541 | list_remove(&victim->meter_list_node); | |
5542 | } | |
98eaac36 JR |
5543 | cookies_remove(ofproto, victim); |
5544 | ||
83b16b98 | 5545 | ovs_mutex_lock(&ofproto->expirable_mutex); |
d6e95e99 BP |
5546 | if (!list_is_empty(&victim->expirable)) { |
5547 | list_remove(&victim->expirable); | |
5548 | } | |
83b16b98 | 5549 | ovs_mutex_unlock(&ofproto->expirable_mutex); |
254750ce BP |
5550 | eviction_group_remove_rule(victim); |
5551 | } | |
5552 | eviction_group_add_rule(rule); | |
5553 | return victim; | |
d0918789 BP |
5554 | } |
5555 | ||
5556 | /* Removes 'old' from its oftable then, if 'new' is nonnull, inserts 'new'. */ | |
5557 | static void | |
5558 | oftable_substitute_rule(struct rule *old, struct rule *new) | |
5559 | { | |
5560 | if (new) { | |
5561 | oftable_replace_rule(new); | |
5562 | } else { | |
ad3efdcb | 5563 | ovs_rwlock_wrlock(&old->evict); |
d0918789 BP |
5564 | oftable_remove_rule(old); |
5565 | } | |
5566 | } | |
5567 | \f | |
abe529af | 5568 | /* unixctl commands. */ |
7aa697dd | 5569 | |
abe529af | 5570 | struct ofproto * |
2ac6bedd | 5571 | ofproto_lookup(const char *name) |
7aa697dd | 5572 | { |
2ac6bedd | 5573 | struct ofproto *ofproto; |
7aa697dd | 5574 | |
2ac6bedd BP |
5575 | HMAP_FOR_EACH_WITH_HASH (ofproto, hmap_node, hash_string(name, 0), |
5576 | &all_ofprotos) { | |
5577 | if (!strcmp(ofproto->name, name)) { | |
5578 | return ofproto; | |
5579 | } | |
7aa697dd | 5580 | } |
2ac6bedd | 5581 | return NULL; |
7aa697dd BP |
5582 | } |
5583 | ||
5584 | static void | |
0e15264f BP |
5585 | ofproto_unixctl_list(struct unixctl_conn *conn, int argc OVS_UNUSED, |
5586 | const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED) | |
7aa697dd | 5587 | { |
7aa697dd | 5588 | struct ofproto *ofproto; |
7aa697dd | 5589 | struct ds results; |
7aa697dd | 5590 | |
7aa697dd | 5591 | ds_init(&results); |
2ac6bedd BP |
5592 | HMAP_FOR_EACH (ofproto, hmap_node, &all_ofprotos) { |
5593 | ds_put_format(&results, "%s\n", ofproto->name); | |
7aa697dd | 5594 | } |
bde9f75d | 5595 | unixctl_command_reply(conn, ds_cstr(&results)); |
7aa697dd | 5596 | ds_destroy(&results); |
7aa697dd BP |
5597 | } |
5598 | ||
5599 | static void | |
5600 | ofproto_unixctl_init(void) | |
5601 | { | |
5602 | static bool registered; | |
5603 | if (registered) { | |
5604 | return; | |
5605 | } | |
5606 | registered = true; | |
5607 | ||
0e15264f BP |
5608 | unixctl_command_register("ofproto/list", "", 0, 0, |
5609 | ofproto_unixctl_list, NULL); | |
064af421 | 5610 | } |
52a90c29 BP |
5611 | \f |
5612 | /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.) | |
5613 | * | |
5614 | * This is deprecated. It is only for compatibility with broken device drivers | |
5615 | * in old versions of Linux that do not properly support VLANs when VLAN | |
5616 | * devices are not used. When broken device drivers are no longer in | |
5617 | * widespread use, we will delete these interfaces. */ | |
5618 | ||
5619 | /* Sets a 1-bit in the 4096-bit 'vlan_bitmap' for each VLAN ID that is matched | |
5620 | * (exactly) by an OpenFlow rule in 'ofproto'. */ | |
5621 | void | |
5622 | ofproto_get_vlan_usage(struct ofproto *ofproto, unsigned long int *vlan_bitmap) | |
5623 | { | |
d0918789 | 5624 | const struct oftable *oftable; |
52a90c29 BP |
5625 | |
5626 | free(ofproto->vlan_bitmap); | |
5627 | ofproto->vlan_bitmap = bitmap_allocate(4096); | |
5628 | ofproto->vlans_changed = false; | |
5629 | ||
d0918789 | 5630 | OFPROTO_FOR_EACH_TABLE (oftable, ofproto) { |
52a90c29 BP |
5631 | const struct cls_table *table; |
5632 | ||
d0918789 | 5633 | HMAP_FOR_EACH (table, hmap_node, &oftable->cls.tables) { |
5cb7a798 | 5634 | if (minimask_get_vid_mask(&table->mask) == VLAN_VID_MASK) { |
52a90c29 BP |
5635 | const struct cls_rule *rule; |
5636 | ||
5637 | HMAP_FOR_EACH (rule, hmap_node, &table->rules) { | |
5cb7a798 | 5638 | uint16_t vid = miniflow_get_vid(&rule->match.flow); |
52a90c29 BP |
5639 | bitmap_set1(vlan_bitmap, vid); |
5640 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
5641 | } | |
5642 | } | |
5643 | } | |
5644 | } | |
5645 | } | |
5646 | ||
5647 | /* Returns true if new VLANs have come into use by the flow table since the | |
5648 | * last call to ofproto_get_vlan_usage(). | |
5649 | * | |
5650 | * We don't track when old VLANs stop being used. */ | |
5651 | bool | |
5652 | ofproto_has_vlan_usage_changed(const struct ofproto *ofproto) | |
5653 | { | |
5654 | return ofproto->vlans_changed; | |
5655 | } | |
5656 | ||
5657 | /* Configures a VLAN splinter binding between the ports identified by OpenFlow | |
5658 | * port numbers 'vlandev_ofp_port' and 'realdev_ofp_port'. If | |
5659 | * 'realdev_ofp_port' is nonzero, then the VLAN device is enslaved to the real | |
5660 | * device as a VLAN splinter for VLAN ID 'vid'. If 'realdev_ofp_port' is zero, | |
5661 | * then the VLAN device is un-enslaved. */ | |
5662 | int | |
4e022ec0 AW |
5663 | ofproto_port_set_realdev(struct ofproto *ofproto, ofp_port_t vlandev_ofp_port, |
5664 | ofp_port_t realdev_ofp_port, int vid) | |
52a90c29 BP |
5665 | { |
5666 | struct ofport *ofport; | |
5667 | int error; | |
5668 | ||
cb22974d | 5669 | ovs_assert(vlandev_ofp_port != realdev_ofp_port); |
52a90c29 BP |
5670 | |
5671 | ofport = ofproto_get_port(ofproto, vlandev_ofp_port); | |
5672 | if (!ofport) { | |
5673 | VLOG_WARN("%s: cannot set realdev on nonexistent port %"PRIu16, | |
5674 | ofproto->name, vlandev_ofp_port); | |
5675 | return EINVAL; | |
5676 | } | |
5677 | ||
5678 | if (!ofproto->ofproto_class->set_realdev) { | |
5679 | if (!vlandev_ofp_port) { | |
5680 | return 0; | |
5681 | } | |
5682 | VLOG_WARN("%s: vlan splinters not supported", ofproto->name); | |
5683 | return EOPNOTSUPP; | |
5684 | } | |
5685 | ||
5686 | error = ofproto->ofproto_class->set_realdev(ofport, realdev_ofp_port, vid); | |
5687 | if (error) { | |
5688 | VLOG_WARN("%s: setting realdev on port %"PRIu16" (%s) failed (%s)", | |
5689 | ofproto->name, vlandev_ofp_port, | |
10a89ef0 | 5690 | netdev_get_name(ofport->netdev), ovs_strerror(error)); |
52a90c29 BP |
5691 | } |
5692 | return error; | |
5693 | } |