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064af421 | 1 | /* |
e0edde6f | 2 | * Copyright (c) 2009, 2010, 2011, 2012 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> | |
52a90c29 | 24 | #include "bitmap.h" |
10a24935 | 25 | #include "byte-order.h" |
064af421 | 26 | #include "classifier.h" |
19a87e36 | 27 | #include "connmgr.h" |
064af421 | 28 | #include "coverage.h" |
4f2cad2c | 29 | #include "dynamic-string.h" |
ca0f572c BP |
30 | #include "hash.h" |
31 | #include "hmap.h" | |
254750ce | 32 | #include "meta-flow.h" |
064af421 | 33 | #include "netdev.h" |
09246b99 | 34 | #include "nx-match.h" |
f25d0cf3 | 35 | #include "ofp-actions.h" |
90bf1e07 | 36 | #include "ofp-errors.h" |
064af421 | 37 | #include "ofp-print.h" |
fa37b408 | 38 | #include "ofp-util.h" |
064af421 | 39 | #include "ofpbuf.h" |
5bee6e26 | 40 | #include "ofproto-provider.h" |
064af421 BP |
41 | #include "openflow/nicira-ext.h" |
42 | #include "openflow/openflow.h" | |
064af421 BP |
43 | #include "packets.h" |
44 | #include "pinsched.h" | |
45 | #include "pktbuf.h" | |
46 | #include "poll-loop.h" | |
254750ce | 47 | #include "random.h" |
064af421 | 48 | #include "shash.h" |
0d085684 | 49 | #include "simap.h" |
b3c01ed3 | 50 | #include "sset.h" |
064af421 | 51 | #include "timeval.h" |
c4617b3c | 52 | #include "unaligned.h" |
4f2cad2c | 53 | #include "unixctl.h" |
5136ce49 | 54 | #include "vlog.h" |
064af421 | 55 | |
d98e6007 | 56 | VLOG_DEFINE_THIS_MODULE(ofproto); |
064af421 | 57 | |
d76f09ea | 58 | COVERAGE_DEFINE(ofproto_error); |
d76f09ea | 59 | COVERAGE_DEFINE(ofproto_flush); |
d76f09ea | 60 | COVERAGE_DEFINE(ofproto_no_packet_in); |
d76f09ea BP |
61 | COVERAGE_DEFINE(ofproto_packet_out); |
62 | COVERAGE_DEFINE(ofproto_queue_req); | |
63 | COVERAGE_DEFINE(ofproto_recv_openflow); | |
64 | COVERAGE_DEFINE(ofproto_reinit_ports); | |
d76f09ea BP |
65 | COVERAGE_DEFINE(ofproto_uninstallable); |
66 | COVERAGE_DEFINE(ofproto_update_port); | |
67 | ||
7ee20df1 BP |
68 | enum ofproto_state { |
69 | S_OPENFLOW, /* Processing OpenFlow commands. */ | |
254750ce | 70 | S_EVICT, /* Evicting flows from over-limit tables. */ |
7ee20df1 BP |
71 | S_FLUSH, /* Deleting all flow table rules. */ |
72 | }; | |
73 | ||
74 | enum ofoperation_type { | |
75 | OFOPERATION_ADD, | |
76 | OFOPERATION_DELETE, | |
77 | OFOPERATION_MODIFY | |
78 | }; | |
79 | ||
80 | /* A single OpenFlow request can execute any number of operations. The | |
81 | * ofopgroup maintain OpenFlow state common to all of the operations, e.g. the | |
82 | * ofconn to which an error reply should be sent if necessary. | |
83 | * | |
84 | * ofproto initiates some operations internally. These operations are still | |
85 | * assigned to groups but will not have an associated ofconn. */ | |
86 | struct ofopgroup { | |
87 | struct ofproto *ofproto; /* Owning ofproto. */ | |
88 | struct list ofproto_node; /* In ofproto's "pending" list. */ | |
89 | struct list ops; /* List of "struct ofoperation"s. */ | |
90 | ||
91 | /* Data needed to send OpenFlow reply on failure or to send a buffered | |
92 | * packet on success. | |
93 | * | |
94 | * If list_is_empty(ofconn_node) then this ofopgroup never had an | |
95 | * associated ofconn or its ofconn's connection dropped after it initiated | |
96 | * the operation. In the latter case 'ofconn' is a wild pointer that | |
97 | * refers to freed memory, so the 'ofconn' member must be used only if | |
98 | * !list_is_empty(ofconn_node). | |
99 | */ | |
100 | struct list ofconn_node; /* In ofconn's list of pending opgroups. */ | |
101 | struct ofconn *ofconn; /* ofconn for reply (but see note above). */ | |
102 | struct ofp_header *request; /* Original request (truncated at 64 bytes). */ | |
103 | uint32_t buffer_id; /* Buffer id from original request. */ | |
104 | int error; /* 0 if no error yet, otherwise error code. */ | |
105 | }; | |
106 | ||
7024dffe BP |
107 | static struct ofopgroup *ofopgroup_create_unattached(struct ofproto *); |
108 | static struct ofopgroup *ofopgroup_create(struct ofproto *, struct ofconn *, | |
109 | const struct ofp_header *, | |
110 | uint32_t buffer_id); | |
7ee20df1 BP |
111 | static void ofopgroup_submit(struct ofopgroup *); |
112 | static void ofopgroup_destroy(struct ofopgroup *); | |
113 | ||
114 | /* A single flow table operation. */ | |
115 | struct ofoperation { | |
116 | struct ofopgroup *group; /* Owning group. */ | |
117 | struct list group_node; /* In ofopgroup's "ops" list. */ | |
118 | struct hmap_node hmap_node; /* In ofproto's "deletions" hmap. */ | |
119 | struct rule *rule; /* Rule being operated upon. */ | |
120 | enum ofoperation_type type; /* Type of operation. */ | |
62fd0247 BP |
121 | struct rule *victim; /* OFOPERATION_ADD: Replaced rule. */ |
122 | struct ofpact *ofpacts; /* OFOPERATION_MODIFY: Replaced actions. */ | |
123 | size_t ofpacts_len; /* OFOPERATION_MODIFY: Bytes of ofpacts. */ | |
7ee20df1 BP |
124 | ovs_be64 flow_cookie; /* Rule's old flow cookie. */ |
125 | }; | |
126 | ||
127 | static void ofoperation_create(struct ofopgroup *, struct rule *, | |
128 | enum ofoperation_type); | |
129 | static void ofoperation_destroy(struct ofoperation *); | |
130 | ||
d0918789 BP |
131 | /* oftable. */ |
132 | static void oftable_init(struct oftable *); | |
133 | static void oftable_destroy(struct oftable *); | |
878ae780 | 134 | |
254750ce BP |
135 | static void oftable_set_name(struct oftable *, const char *name); |
136 | ||
137 | static void oftable_disable_eviction(struct oftable *); | |
138 | static void oftable_enable_eviction(struct oftable *, | |
139 | const struct mf_subfield *fields, | |
140 | size_t n_fields); | |
141 | ||
d0918789 BP |
142 | static void oftable_remove_rule(struct rule *); |
143 | static struct rule *oftable_replace_rule(struct rule *); | |
144 | static void oftable_substitute_rule(struct rule *old, struct rule *new); | |
064af421 | 145 | |
254750ce BP |
146 | /* A set of rules within a single OpenFlow table (oftable) that have the same |
147 | * values for the oftable's eviction_fields. A rule to be evicted, when one is | |
148 | * needed, is taken from the eviction group that contains the greatest number | |
149 | * of rules. | |
150 | * | |
151 | * An oftable owns any number of eviction groups, each of which contains any | |
152 | * number of rules. | |
153 | * | |
154 | * Membership in an eviction group is imprecise, based on the hash of the | |
155 | * oftable's eviction_fields (in the eviction_group's id_node.hash member). | |
156 | * That is, if two rules have different eviction_fields, but those | |
157 | * eviction_fields hash to the same value, then they will belong to the same | |
158 | * eviction_group anyway. | |
159 | * | |
160 | * (When eviction is not enabled on an oftable, we don't track any eviction | |
161 | * groups, to save time and space.) */ | |
162 | struct eviction_group { | |
163 | struct hmap_node id_node; /* In oftable's "eviction_groups_by_id". */ | |
164 | struct heap_node size_node; /* In oftable's "eviction_groups_by_size". */ | |
165 | struct heap rules; /* Contains "struct rule"s. */ | |
166 | }; | |
167 | ||
168 | static struct rule *choose_rule_to_evict(struct oftable *); | |
169 | static void ofproto_evict(struct ofproto *); | |
170 | static uint32_t rule_eviction_priority(struct rule *); | |
f29152ca | 171 | |
d0918789 BP |
172 | /* ofport. */ |
173 | static void ofport_destroy__(struct ofport *); | |
174 | static void ofport_destroy(struct ofport *); | |
175 | ||
176 | static void update_port(struct ofproto *, const char *devname); | |
177 | static int init_ports(struct ofproto *); | |
178 | static void reinit_ports(struct ofproto *); | |
7ee20df1 | 179 | |
254750ce BP |
180 | /* rule. */ |
181 | static void ofproto_rule_destroy__(struct rule *); | |
182 | static void ofproto_rule_send_removed(struct rule *, uint8_t reason); | |
183 | static bool rule_is_modifiable(const struct rule *); | |
184 | static bool rule_is_hidden(const struct rule *); | |
185 | ||
d0918789 | 186 | /* OpenFlow. */ |
90bf1e07 BP |
187 | static enum ofperr add_flow(struct ofproto *, struct ofconn *, |
188 | const struct ofputil_flow_mod *, | |
189 | const struct ofp_header *); | |
254750ce | 190 | static void delete_flow__(struct rule *, struct ofopgroup *); |
7ee20df1 | 191 | static bool handle_openflow(struct ofconn *, struct ofpbuf *); |
90bf1e07 BP |
192 | static enum ofperr handle_flow_mod__(struct ofproto *, struct ofconn *, |
193 | const struct ofputil_flow_mod *, | |
d0918789 | 194 | const struct ofp_header *); |
f29152ca | 195 | |
d0918789 BP |
196 | /* ofproto. */ |
197 | static uint64_t pick_datapath_id(const struct ofproto *); | |
198 | static uint64_t pick_fallback_dpid(void); | |
199 | static void ofproto_destroy__(struct ofproto *); | |
ada3428f | 200 | static void update_mtu(struct ofproto *, struct ofport *); |
f29152ca | 201 | |
d0918789 | 202 | /* unixctl. */ |
abe529af | 203 | static void ofproto_unixctl_init(void); |
f29152ca | 204 | |
abe529af BP |
205 | /* All registered ofproto classes, in probe order. */ |
206 | static const struct ofproto_class **ofproto_classes; | |
207 | static size_t n_ofproto_classes; | |
208 | static size_t allocated_ofproto_classes; | |
7aa697dd | 209 | |
f797957a | 210 | /* Map from datapath name to struct ofproto, for use by unixctl commands. */ |
abe529af | 211 | static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos); |
ebe482fd | 212 | |
abe529af | 213 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
f29152ca | 214 | |
abe529af BP |
215 | static void |
216 | ofproto_initialize(void) | |
217 | { | |
218 | static bool inited; | |
f29152ca | 219 | |
abe529af BP |
220 | if (!inited) { |
221 | inited = true; | |
222 | ofproto_class_register(&ofproto_dpif_class); | |
223 | } | |
224 | } | |
f29152ca | 225 | |
abe529af BP |
226 | /* 'type' should be a normalized datapath type, as returned by |
227 | * ofproto_normalize_type(). Returns the corresponding ofproto_class | |
228 | * structure, or a null pointer if there is none registered for 'type'. */ | |
229 | static const struct ofproto_class * | |
230 | ofproto_class_find__(const char *type) | |
231 | { | |
232 | size_t i; | |
f29152ca | 233 | |
abe529af BP |
234 | ofproto_initialize(); |
235 | for (i = 0; i < n_ofproto_classes; i++) { | |
236 | const struct ofproto_class *class = ofproto_classes[i]; | |
237 | struct sset types; | |
238 | bool found; | |
064af421 | 239 | |
abe529af BP |
240 | sset_init(&types); |
241 | class->enumerate_types(&types); | |
242 | found = sset_contains(&types, type); | |
243 | sset_destroy(&types); | |
bcf84111 | 244 | |
abe529af BP |
245 | if (found) { |
246 | return class; | |
247 | } | |
248 | } | |
249 | VLOG_WARN("unknown datapath type %s", type); | |
250 | return NULL; | |
251 | } | |
064af421 | 252 | |
abe529af BP |
253 | /* Registers a new ofproto class. After successful registration, new ofprotos |
254 | * of that type can be created using ofproto_create(). */ | |
255 | int | |
256 | ofproto_class_register(const struct ofproto_class *new_class) | |
257 | { | |
258 | size_t i; | |
7aa697dd | 259 | |
abe529af BP |
260 | for (i = 0; i < n_ofproto_classes; i++) { |
261 | if (ofproto_classes[i] == new_class) { | |
262 | return EEXIST; | |
263 | } | |
264 | } | |
064af421 | 265 | |
abe529af BP |
266 | if (n_ofproto_classes >= allocated_ofproto_classes) { |
267 | ofproto_classes = x2nrealloc(ofproto_classes, | |
268 | &allocated_ofproto_classes, | |
269 | sizeof *ofproto_classes); | |
270 | } | |
271 | ofproto_classes[n_ofproto_classes++] = new_class; | |
272 | return 0; | |
273 | } | |
064af421 | 274 | |
abe529af BP |
275 | /* Unregisters a datapath provider. 'type' must have been previously |
276 | * registered and not currently be in use by any ofprotos. After | |
277 | * unregistration new datapaths of that type cannot be opened using | |
278 | * ofproto_create(). */ | |
279 | int | |
280 | ofproto_class_unregister(const struct ofproto_class *class) | |
281 | { | |
282 | size_t i; | |
76ce9432 | 283 | |
abe529af BP |
284 | for (i = 0; i < n_ofproto_classes; i++) { |
285 | if (ofproto_classes[i] == class) { | |
286 | for (i++; i < n_ofproto_classes; i++) { | |
287 | ofproto_classes[i - 1] = ofproto_classes[i]; | |
288 | } | |
289 | n_ofproto_classes--; | |
290 | return 0; | |
291 | } | |
292 | } | |
293 | VLOG_WARN("attempted to unregister an ofproto class that is not " | |
294 | "registered"); | |
295 | return EAFNOSUPPORT; | |
296 | } | |
4a4cdb3b | 297 | |
f79e673f BP |
298 | /* Clears 'types' and enumerates all registered ofproto types into it. The |
299 | * caller must first initialize the sset. */ | |
300 | void | |
301 | ofproto_enumerate_types(struct sset *types) | |
302 | { | |
abe529af | 303 | size_t i; |
064af421 | 304 | |
abe529af BP |
305 | ofproto_initialize(); |
306 | for (i = 0; i < n_ofproto_classes; i++) { | |
307 | ofproto_classes[i]->enumerate_types(types); | |
308 | } | |
f79e673f | 309 | } |
064af421 | 310 | |
f79e673f BP |
311 | /* Returns the fully spelled out name for the given ofproto 'type'. |
312 | * | |
313 | * Normalized type string can be compared with strcmp(). Unnormalized type | |
314 | * string might be the same even if they have different spellings. */ | |
315 | const char * | |
316 | ofproto_normalize_type(const char *type) | |
317 | { | |
abe529af | 318 | return type && type[0] ? type : "system"; |
f79e673f | 319 | } |
064af421 | 320 | |
f79e673f BP |
321 | /* Clears 'names' and enumerates the names of all known created ofprotos with |
322 | * the given 'type'. The caller must first initialize the sset. Returns 0 if | |
323 | * successful, otherwise a positive errno value. | |
324 | * | |
325 | * Some kinds of datapaths might not be practically enumerable. This is not | |
326 | * considered an error. */ | |
327 | int | |
328 | ofproto_enumerate_names(const char *type, struct sset *names) | |
329 | { | |
abe529af BP |
330 | const struct ofproto_class *class = ofproto_class_find__(type); |
331 | return class ? class->enumerate_names(type, names) : EAFNOSUPPORT; | |
332 | } | |
7aa697dd | 333 | |
064af421 | 334 | int |
abe529af | 335 | ofproto_create(const char *datapath_name, const char *datapath_type, |
064af421 BP |
336 | struct ofproto **ofprotop) |
337 | { | |
abe529af BP |
338 | const struct ofproto_class *class; |
339 | struct ofproto *ofproto; | |
064af421 BP |
340 | int error; |
341 | ||
342 | *ofprotop = NULL; | |
343 | ||
abe529af | 344 | ofproto_initialize(); |
7aa697dd BP |
345 | ofproto_unixctl_init(); |
346 | ||
abe529af BP |
347 | datapath_type = ofproto_normalize_type(datapath_type); |
348 | class = ofproto_class_find__(datapath_type); | |
349 | if (!class) { | |
350 | VLOG_WARN("could not create datapath %s of unknown type %s", | |
351 | datapath_name, datapath_type); | |
352 | return EAFNOSUPPORT; | |
064af421 BP |
353 | } |
354 | ||
abe529af BP |
355 | ofproto = class->alloc(); |
356 | if (!ofproto) { | |
357 | VLOG_ERR("failed to allocate datapath %s of type %s", | |
358 | datapath_name, datapath_type); | |
359 | return ENOMEM; | |
360 | } | |
361 | ||
362 | /* Initialize. */ | |
363 | memset(ofproto, 0, sizeof *ofproto); | |
364 | ofproto->ofproto_class = class; | |
365 | ofproto->name = xstrdup(datapath_name); | |
366 | ofproto->type = xstrdup(datapath_type); | |
367 | hmap_insert(&all_ofprotos, &ofproto->hmap_node, | |
368 | hash_string(ofproto->name, 0)); | |
369 | ofproto->datapath_id = 0; | |
084f5290 SH |
370 | ofproto_set_flow_eviction_threshold(ofproto, |
371 | OFPROTO_FLOW_EVICTON_THRESHOLD_DEFAULT); | |
8402c74b | 372 | ofproto->forward_bpdu = false; |
abe529af BP |
373 | ofproto->fallback_dpid = pick_fallback_dpid(); |
374 | ofproto->mfr_desc = xstrdup(DEFAULT_MFR_DESC); | |
375 | ofproto->hw_desc = xstrdup(DEFAULT_HW_DESC); | |
376 | ofproto->sw_desc = xstrdup(DEFAULT_SW_DESC); | |
377 | ofproto->serial_desc = xstrdup(DEFAULT_SERIAL_DESC); | |
378 | ofproto->dp_desc = xstrdup(DEFAULT_DP_DESC); | |
7257b535 | 379 | ofproto->frag_handling = OFPC_FRAG_NORMAL; |
abe529af BP |
380 | hmap_init(&ofproto->ports); |
381 | shash_init(&ofproto->port_by_name); | |
6c1491fb BP |
382 | ofproto->tables = NULL; |
383 | ofproto->n_tables = 0; | |
abe529af | 384 | ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name); |
7ee20df1 BP |
385 | ofproto->state = S_OPENFLOW; |
386 | list_init(&ofproto->pending); | |
dd5616b3 | 387 | ofproto->n_pending = 0; |
7ee20df1 | 388 | hmap_init(&ofproto->deletions); |
a5b8d268 BP |
389 | ofproto->n_add = ofproto->n_delete = ofproto->n_modify = 0; |
390 | ofproto->first_op = ofproto->last_op = LLONG_MIN; | |
391 | ofproto->next_op_report = LLONG_MAX; | |
392 | ofproto->op_backoff = LLONG_MIN; | |
52a90c29 BP |
393 | ofproto->vlan_bitmap = NULL; |
394 | ofproto->vlans_changed = false; | |
ada3428f | 395 | ofproto->min_mtu = INT_MAX; |
abe529af | 396 | |
0f5f95a9 | 397 | error = ofproto->ofproto_class->construct(ofproto); |
19a87e36 | 398 | if (error) { |
abe529af BP |
399 | VLOG_ERR("failed to open datapath %s: %s", |
400 | datapath_name, strerror(error)); | |
401 | ofproto_destroy__(ofproto); | |
19a87e36 BP |
402 | return error; |
403 | } | |
073e2a6f | 404 | |
0f5f95a9 | 405 | assert(ofproto->n_tables); |
19a87e36 | 406 | |
abe529af | 407 | ofproto->datapath_id = pick_datapath_id(ofproto); |
abe529af | 408 | init_ports(ofproto); |
7aa697dd | 409 | |
abe529af | 410 | *ofprotop = ofproto; |
064af421 BP |
411 | return 0; |
412 | } | |
413 | ||
0f5f95a9 BP |
414 | void |
415 | ofproto_init_tables(struct ofproto *ofproto, int n_tables) | |
416 | { | |
417 | struct oftable *table; | |
418 | ||
419 | assert(!ofproto->n_tables); | |
420 | assert(n_tables >= 1 && n_tables <= 255); | |
421 | ||
422 | ofproto->n_tables = n_tables; | |
423 | ofproto->tables = xmalloc(n_tables * sizeof *ofproto->tables); | |
424 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
425 | oftable_init(table); | |
426 | } | |
427 | } | |
428 | ||
e825ace2 BP |
429 | uint64_t |
430 | ofproto_get_datapath_id(const struct ofproto *ofproto) | |
431 | { | |
432 | return ofproto->datapath_id; | |
433 | } | |
434 | ||
064af421 BP |
435 | void |
436 | ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id) | |
437 | { | |
438 | uint64_t old_dpid = p->datapath_id; | |
fa60c019 | 439 | p->datapath_id = datapath_id ? datapath_id : pick_datapath_id(p); |
064af421 | 440 | if (p->datapath_id != old_dpid) { |
76ce9432 BP |
441 | /* Force all active connections to reconnect, since there is no way to |
442 | * notify a controller that the datapath ID has changed. */ | |
fa05809b | 443 | ofproto_reconnect_controllers(p); |
064af421 BP |
444 | } |
445 | } | |
446 | ||
76ce9432 BP |
447 | void |
448 | ofproto_set_controllers(struct ofproto *p, | |
449 | const struct ofproto_controller *controllers, | |
450 | size_t n_controllers) | |
451 | { | |
19a87e36 | 452 | connmgr_set_controllers(p->connmgr, controllers, n_controllers); |
064af421 BP |
453 | } |
454 | ||
31681a5d JP |
455 | void |
456 | ofproto_set_fail_mode(struct ofproto *p, enum ofproto_fail_mode fail_mode) | |
457 | { | |
19a87e36 | 458 | connmgr_set_fail_mode(p->connmgr, fail_mode); |
31681a5d JP |
459 | } |
460 | ||
fa05809b BP |
461 | /* Drops the connections between 'ofproto' and all of its controllers, forcing |
462 | * them to reconnect. */ | |
463 | void | |
464 | ofproto_reconnect_controllers(struct ofproto *ofproto) | |
465 | { | |
19a87e36 | 466 | connmgr_reconnect(ofproto->connmgr); |
917e50e1 BP |
467 | } |
468 | ||
469 | /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s | |
470 | * in-band control should guarantee access, in the same way that in-band | |
471 | * control guarantees access to OpenFlow controllers. */ | |
472 | void | |
473 | ofproto_set_extra_in_band_remotes(struct ofproto *ofproto, | |
474 | const struct sockaddr_in *extras, size_t n) | |
475 | { | |
19a87e36 | 476 | connmgr_set_extra_in_band_remotes(ofproto->connmgr, extras, n); |
917e50e1 BP |
477 | } |
478 | ||
b1da6250 BP |
479 | /* Sets the OpenFlow queue used by flows set up by in-band control on |
480 | * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control | |
481 | * flows will use the default queue. */ | |
482 | void | |
483 | ofproto_set_in_band_queue(struct ofproto *ofproto, int queue_id) | |
484 | { | |
19a87e36 | 485 | connmgr_set_in_band_queue(ofproto->connmgr, queue_id); |
b1da6250 BP |
486 | } |
487 | ||
084f5290 SH |
488 | /* Sets the number of flows at which eviction from the kernel flow table |
489 | * will occur. */ | |
490 | void | |
491 | ofproto_set_flow_eviction_threshold(struct ofproto *ofproto, unsigned threshold) | |
492 | { | |
493 | if (threshold < OFPROTO_FLOW_EVICTION_THRESHOLD_MIN) { | |
494 | ofproto->flow_eviction_threshold = OFPROTO_FLOW_EVICTION_THRESHOLD_MIN; | |
495 | } else { | |
496 | ofproto->flow_eviction_threshold = threshold; | |
497 | } | |
498 | } | |
499 | ||
b53055f4 | 500 | /* If forward_bpdu is true, the NORMAL action will forward frames with |
8402c74b SS |
501 | * reserved (e.g. STP) destination Ethernet addresses. if forward_bpdu is false, |
502 | * the NORMAL action will drop these frames. */ | |
503 | void | |
504 | ofproto_set_forward_bpdu(struct ofproto *ofproto, bool forward_bpdu) | |
505 | { | |
506 | bool old_val = ofproto->forward_bpdu; | |
507 | ofproto->forward_bpdu = forward_bpdu; | |
508 | if (old_val != ofproto->forward_bpdu) { | |
509 | if (ofproto->ofproto_class->forward_bpdu_changed) { | |
510 | ofproto->ofproto_class->forward_bpdu_changed(ofproto); | |
511 | } | |
b53055f4 | 512 | } |
8402c74b SS |
513 | } |
514 | ||
e764773c BP |
515 | /* Sets the MAC aging timeout for the OFPP_NORMAL action on 'ofproto' to |
516 | * 'idle_time', in seconds. */ | |
517 | void | |
518 | ofproto_set_mac_idle_time(struct ofproto *ofproto, unsigned idle_time) | |
519 | { | |
520 | if (ofproto->ofproto_class->set_mac_idle_time) { | |
521 | ofproto->ofproto_class->set_mac_idle_time(ofproto, idle_time); | |
522 | } | |
523 | } | |
524 | ||
064af421 BP |
525 | void |
526 | ofproto_set_desc(struct ofproto *p, | |
5a719c38 JP |
527 | const char *mfr_desc, const char *hw_desc, |
528 | const char *sw_desc, const char *serial_desc, | |
8abc4ed7 | 529 | const char *dp_desc) |
064af421 | 530 | { |
5a719c38 JP |
531 | struct ofp_desc_stats *ods; |
532 | ||
533 | if (mfr_desc) { | |
534 | if (strlen(mfr_desc) >= sizeof ods->mfr_desc) { | |
fbfa2911 BP |
535 | VLOG_WARN("%s: truncating mfr_desc, must be less than %zu bytes", |
536 | p->name, sizeof ods->mfr_desc); | |
5a719c38 JP |
537 | } |
538 | free(p->mfr_desc); | |
539 | p->mfr_desc = xstrdup(mfr_desc); | |
064af421 | 540 | } |
5a719c38 JP |
541 | if (hw_desc) { |
542 | if (strlen(hw_desc) >= sizeof ods->hw_desc) { | |
fbfa2911 BP |
543 | VLOG_WARN("%s: truncating hw_desc, must be less than %zu bytes", |
544 | p->name, sizeof ods->hw_desc); | |
5a719c38 JP |
545 | } |
546 | free(p->hw_desc); | |
547 | p->hw_desc = xstrdup(hw_desc); | |
064af421 | 548 | } |
5a719c38 JP |
549 | if (sw_desc) { |
550 | if (strlen(sw_desc) >= sizeof ods->sw_desc) { | |
fbfa2911 BP |
551 | VLOG_WARN("%s: truncating sw_desc, must be less than %zu bytes", |
552 | p->name, sizeof ods->sw_desc); | |
5a719c38 JP |
553 | } |
554 | free(p->sw_desc); | |
555 | p->sw_desc = xstrdup(sw_desc); | |
556 | } | |
557 | if (serial_desc) { | |
558 | if (strlen(serial_desc) >= sizeof ods->serial_num) { | |
fbfa2911 BP |
559 | VLOG_WARN("%s: truncating serial_desc, must be less than %zu " |
560 | "bytes", p->name, sizeof ods->serial_num); | |
5a719c38 JP |
561 | } |
562 | free(p->serial_desc); | |
563 | p->serial_desc = xstrdup(serial_desc); | |
064af421 | 564 | } |
8abc4ed7 | 565 | if (dp_desc) { |
5a719c38 | 566 | if (strlen(dp_desc) >= sizeof ods->dp_desc) { |
fbfa2911 BP |
567 | VLOG_WARN("%s: truncating dp_desc, must be less than %zu bytes", |
568 | p->name, sizeof ods->dp_desc); | |
5a719c38 | 569 | } |
8abc4ed7 JP |
570 | free(p->dp_desc); |
571 | p->dp_desc = xstrdup(dp_desc); | |
572 | } | |
064af421 BP |
573 | } |
574 | ||
064af421 | 575 | int |
81e2083f | 576 | ofproto_set_snoops(struct ofproto *ofproto, const struct sset *snoops) |
064af421 | 577 | { |
19a87e36 | 578 | return connmgr_set_snoops(ofproto->connmgr, snoops); |
064af421 BP |
579 | } |
580 | ||
581 | int | |
0193b2af JG |
582 | ofproto_set_netflow(struct ofproto *ofproto, |
583 | const struct netflow_options *nf_options) | |
064af421 | 584 | { |
abe529af BP |
585 | if (nf_options && sset_is_empty(&nf_options->collectors)) { |
586 | nf_options = NULL; | |
587 | } | |
588 | ||
589 | if (ofproto->ofproto_class->set_netflow) { | |
590 | return ofproto->ofproto_class->set_netflow(ofproto, nf_options); | |
064af421 | 591 | } else { |
abe529af | 592 | return nf_options ? EOPNOTSUPP : 0; |
064af421 BP |
593 | } |
594 | } | |
595 | ||
abe529af | 596 | int |
72b06300 BP |
597 | ofproto_set_sflow(struct ofproto *ofproto, |
598 | const struct ofproto_sflow_options *oso) | |
599 | { | |
abe529af BP |
600 | if (oso && sset_is_empty(&oso->targets)) { |
601 | oso = NULL; | |
602 | } | |
72b06300 | 603 | |
abe529af BP |
604 | if (ofproto->ofproto_class->set_sflow) { |
605 | return ofproto->ofproto_class->set_sflow(ofproto, oso); | |
72b06300 | 606 | } else { |
abe529af | 607 | return oso ? EOPNOTSUPP : 0; |
72b06300 BP |
608 | } |
609 | } | |
e7934396 | 610 | \f |
21f7563c JP |
611 | /* Spanning Tree Protocol (STP) configuration. */ |
612 | ||
613 | /* Configures STP on 'ofproto' using the settings defined in 's'. If | |
614 | * 's' is NULL, disables STP. | |
615 | * | |
616 | * Returns 0 if successful, otherwise a positive errno value. */ | |
617 | int | |
618 | ofproto_set_stp(struct ofproto *ofproto, | |
619 | const struct ofproto_stp_settings *s) | |
620 | { | |
621 | return (ofproto->ofproto_class->set_stp | |
622 | ? ofproto->ofproto_class->set_stp(ofproto, s) | |
623 | : EOPNOTSUPP); | |
624 | } | |
625 | ||
626 | /* Retrieves STP status of 'ofproto' and stores it in 's'. If the | |
627 | * 'enabled' member of 's' is false, then the other members are not | |
628 | * meaningful. | |
629 | * | |
630 | * Returns 0 if successful, otherwise a positive errno value. */ | |
631 | int | |
632 | ofproto_get_stp_status(struct ofproto *ofproto, | |
633 | struct ofproto_stp_status *s) | |
634 | { | |
635 | return (ofproto->ofproto_class->get_stp_status | |
636 | ? ofproto->ofproto_class->get_stp_status(ofproto, s) | |
637 | : EOPNOTSUPP); | |
638 | } | |
639 | ||
640 | /* Configures STP on 'ofp_port' of 'ofproto' using the settings defined | |
641 | * in 's'. The caller is responsible for assigning STP port numbers | |
642 | * (using the 'port_num' member in the range of 1 through 255, inclusive) | |
643 | * and ensuring there are no duplicates. If the 's' is NULL, then STP | |
644 | * is disabled on the port. | |
645 | * | |
646 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
647 | int | |
648 | ofproto_port_set_stp(struct ofproto *ofproto, uint16_t ofp_port, | |
649 | const struct ofproto_port_stp_settings *s) | |
650 | { | |
651 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
652 | if (!ofport) { | |
653 | VLOG_WARN("%s: cannot configure STP on nonexistent port %"PRIu16, | |
654 | ofproto->name, ofp_port); | |
655 | return ENODEV; | |
656 | } | |
657 | ||
658 | return (ofproto->ofproto_class->set_stp_port | |
659 | ? ofproto->ofproto_class->set_stp_port(ofport, s) | |
660 | : EOPNOTSUPP); | |
661 | } | |
662 | ||
663 | /* Retrieves STP port status of 'ofp_port' on 'ofproto' and stores it in | |
664 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
665 | * are not meaningful. | |
666 | * | |
667 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
668 | int | |
669 | ofproto_port_get_stp_status(struct ofproto *ofproto, uint16_t ofp_port, | |
670 | struct ofproto_port_stp_status *s) | |
671 | { | |
672 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
673 | if (!ofport) { | |
b0a5c43b JP |
674 | VLOG_WARN_RL(&rl, "%s: cannot get STP status on nonexistent " |
675 | "port %"PRIu16, ofproto->name, ofp_port); | |
21f7563c JP |
676 | return ENODEV; |
677 | } | |
678 | ||
679 | return (ofproto->ofproto_class->get_stp_port_status | |
680 | ? ofproto->ofproto_class->get_stp_port_status(ofport, s) | |
681 | : EOPNOTSUPP); | |
682 | } | |
683 | \f | |
8b36f51e EJ |
684 | /* Queue DSCP configuration. */ |
685 | ||
686 | /* Registers meta-data associated with the 'n_qdscp' Qualities of Service | |
687 | * 'queues' attached to 'ofport'. This data is not intended to be sufficient | |
688 | * to implement QoS. Instead, it is used to implement features which require | |
689 | * knowledge of what queues exist on a port, and some basic information about | |
690 | * them. | |
691 | * | |
692 | * Returns 0 if successful, otherwise a positive errno value. */ | |
693 | int | |
694 | ofproto_port_set_queues(struct ofproto *ofproto, uint16_t ofp_port, | |
695 | const struct ofproto_port_queue *queues, | |
696 | size_t n_queues) | |
697 | { | |
698 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
699 | ||
700 | if (!ofport) { | |
701 | VLOG_WARN("%s: cannot set queues on nonexistent port %"PRIu16, | |
702 | ofproto->name, ofp_port); | |
703 | return ENODEV; | |
704 | } | |
705 | ||
706 | return (ofproto->ofproto_class->set_queues | |
707 | ? ofproto->ofproto_class->set_queues(ofport, queues, n_queues) | |
708 | : EOPNOTSUPP); | |
709 | } | |
710 | \f | |
e7934396 BP |
711 | /* Connectivity Fault Management configuration. */ |
712 | ||
892815f5 | 713 | /* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */ |
e7934396 | 714 | void |
892815f5 | 715 | ofproto_port_clear_cfm(struct ofproto *ofproto, uint16_t ofp_port) |
e7934396 | 716 | { |
abe529af BP |
717 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
718 | if (ofport && ofproto->ofproto_class->set_cfm) { | |
a5610457 | 719 | ofproto->ofproto_class->set_cfm(ofport, NULL); |
e7934396 BP |
720 | } |
721 | } | |
72b06300 | 722 | |
892815f5 | 723 | /* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes |
93b8df38 EJ |
724 | * basic configuration from the configuration members in 'cfm', and the remote |
725 | * maintenance point ID from remote_mpid. Ignores the statistics members of | |
726 | * 'cfm'. | |
e7934396 | 727 | * |
892815f5 | 728 | * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */ |
e7934396 | 729 | void |
892815f5 | 730 | ofproto_port_set_cfm(struct ofproto *ofproto, uint16_t ofp_port, |
a5610457 | 731 | const struct cfm_settings *s) |
e7934396 BP |
732 | { |
733 | struct ofport *ofport; | |
abe529af | 734 | int error; |
e7934396 | 735 | |
abe529af | 736 | ofport = ofproto_get_port(ofproto, ofp_port); |
e7934396 | 737 | if (!ofport) { |
892815f5 BP |
738 | VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16, |
739 | ofproto->name, ofp_port); | |
e7934396 BP |
740 | return; |
741 | } | |
742 | ||
93b8df38 EJ |
743 | /* XXX: For configuration simplicity, we only support one remote_mpid |
744 | * outside of the CFM module. It's not clear if this is the correct long | |
745 | * term solution or not. */ | |
abe529af | 746 | error = (ofproto->ofproto_class->set_cfm |
a5610457 | 747 | ? ofproto->ofproto_class->set_cfm(ofport, s) |
abe529af BP |
748 | : EOPNOTSUPP); |
749 | if (error) { | |
750 | VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed (%s)", | |
751 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
752 | strerror(error)); | |
e7934396 | 753 | } |
e7934396 | 754 | } |
e7934396 | 755 | |
fa066f01 BP |
756 | /* Checks the status of LACP negotiation for 'ofp_port' within ofproto. |
757 | * Returns 1 if LACP partner information for 'ofp_port' is up-to-date, | |
758 | * 0 if LACP partner information is not current (generally indicating a | |
759 | * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */ | |
760 | int | |
761 | ofproto_port_is_lacp_current(struct ofproto *ofproto, uint16_t ofp_port) | |
762 | { | |
abe529af BP |
763 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
764 | return (ofport && ofproto->ofproto_class->port_is_lacp_current | |
765 | ? ofproto->ofproto_class->port_is_lacp_current(ofport) | |
fa066f01 | 766 | : -1); |
e7934396 | 767 | } |
e7934396 | 768 | \f |
fa066f01 | 769 | /* Bundles. */ |
e7934396 | 770 | |
abe529af BP |
771 | /* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'. |
772 | * A bundle is the same concept as a Port in OVSDB, that is, it consists of one | |
773 | * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN | |
774 | * configuration plus, if there is more than one slave, a bonding | |
775 | * configuration. | |
776 | * | |
777 | * If 'aux' is already registered then this function updates its configuration | |
778 | * to 's'. Otherwise, this function registers a new bundle. | |
779 | * | |
780 | * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL | |
781 | * port. */ | |
782 | int | |
783 | ofproto_bundle_register(struct ofproto *ofproto, void *aux, | |
784 | const struct ofproto_bundle_settings *s) | |
fa066f01 | 785 | { |
abe529af BP |
786 | return (ofproto->ofproto_class->bundle_set |
787 | ? ofproto->ofproto_class->bundle_set(ofproto, aux, s) | |
788 | : EOPNOTSUPP); | |
fa066f01 BP |
789 | } |
790 | ||
abe529af BP |
791 | /* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'. |
792 | * If no such bundle has been registered, this has no effect. */ | |
793 | int | |
794 | ofproto_bundle_unregister(struct ofproto *ofproto, void *aux) | |
e7934396 | 795 | { |
abe529af | 796 | return ofproto_bundle_register(ofproto, aux, NULL); |
e7934396 | 797 | } |
fa066f01 | 798 | |
e7934396 | 799 | \f |
abe529af BP |
800 | /* Registers a mirror associated with client data pointer 'aux' in 'ofproto'. |
801 | * If 'aux' is already registered then this function updates its configuration | |
c06bba01 | 802 | * to 's'. Otherwise, this function registers a new mirror. */ |
abe529af BP |
803 | int |
804 | ofproto_mirror_register(struct ofproto *ofproto, void *aux, | |
805 | const struct ofproto_mirror_settings *s) | |
064af421 | 806 | { |
abe529af BP |
807 | return (ofproto->ofproto_class->mirror_set |
808 | ? ofproto->ofproto_class->mirror_set(ofproto, aux, s) | |
809 | : EOPNOTSUPP); | |
064af421 BP |
810 | } |
811 | ||
abe529af BP |
812 | /* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'. |
813 | * If no mirror has been registered, this has no effect. */ | |
814 | int | |
815 | ofproto_mirror_unregister(struct ofproto *ofproto, void *aux) | |
064af421 | 816 | { |
abe529af | 817 | return ofproto_mirror_register(ofproto, aux, NULL); |
064af421 BP |
818 | } |
819 | ||
9d24de3b JP |
820 | /* Retrieves statistics from mirror associated with client data pointer |
821 | * 'aux' in 'ofproto'. Stores packet and byte counts in 'packets' and | |
822 | * 'bytes', respectively. If a particular counters is not supported, | |
823 | * the appropriate argument is set to UINT64_MAX. */ | |
824 | int | |
825 | ofproto_mirror_get_stats(struct ofproto *ofproto, void *aux, | |
826 | uint64_t *packets, uint64_t *bytes) | |
827 | { | |
828 | if (!ofproto->ofproto_class->mirror_get_stats) { | |
829 | *packets = *bytes = UINT64_MAX; | |
830 | return EOPNOTSUPP; | |
831 | } | |
832 | ||
833 | return ofproto->ofproto_class->mirror_get_stats(ofproto, aux, | |
834 | packets, bytes); | |
835 | } | |
836 | ||
abe529af BP |
837 | /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on |
838 | * which all packets are flooded, instead of using MAC learning. If | |
839 | * 'flood_vlans' is NULL, then MAC learning applies to all VLANs. | |
840 | * | |
841 | * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL | |
842 | * port. */ | |
843 | int | |
844 | ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans) | |
abdfe474 | 845 | { |
abe529af BP |
846 | return (ofproto->ofproto_class->set_flood_vlans |
847 | ? ofproto->ofproto_class->set_flood_vlans(ofproto, flood_vlans) | |
848 | : EOPNOTSUPP); | |
abdfe474 JP |
849 | } |
850 | ||
abe529af BP |
851 | /* Returns true if 'aux' is a registered bundle that is currently in use as the |
852 | * output for a mirror. */ | |
853 | bool | |
b4affc74 | 854 | ofproto_is_mirror_output_bundle(const struct ofproto *ofproto, void *aux) |
abe529af BP |
855 | { |
856 | return (ofproto->ofproto_class->is_mirror_output_bundle | |
857 | ? ofproto->ofproto_class->is_mirror_output_bundle(ofproto, aux) | |
858 | : false); | |
859 | } | |
860 | \f | |
254750ce BP |
861 | /* Configuration of OpenFlow tables. */ |
862 | ||
863 | /* Returns the number of OpenFlow tables in 'ofproto'. */ | |
864 | int | |
865 | ofproto_get_n_tables(const struct ofproto *ofproto) | |
866 | { | |
867 | return ofproto->n_tables; | |
868 | } | |
869 | ||
870 | /* Configures the OpenFlow table in 'ofproto' with id 'table_id' with the | |
871 | * settings from 's'. 'table_id' must be in the range 0 through the number of | |
872 | * OpenFlow tables in 'ofproto' minus 1, inclusive. | |
873 | * | |
874 | * For read-only tables, only the name may be configured. */ | |
875 | void | |
876 | ofproto_configure_table(struct ofproto *ofproto, int table_id, | |
877 | const struct ofproto_table_settings *s) | |
878 | { | |
879 | struct oftable *table; | |
880 | ||
881 | assert(table_id >= 0 && table_id < ofproto->n_tables); | |
882 | table = &ofproto->tables[table_id]; | |
883 | ||
884 | oftable_set_name(table, s->name); | |
885 | ||
886 | if (table->flags & OFTABLE_READONLY) { | |
887 | return; | |
888 | } | |
889 | ||
890 | if (s->groups) { | |
891 | oftable_enable_eviction(table, s->groups, s->n_groups); | |
892 | } else { | |
893 | oftable_disable_eviction(table); | |
894 | } | |
895 | ||
896 | table->max_flows = s->max_flows; | |
897 | if (classifier_count(&table->cls) > table->max_flows | |
898 | && table->eviction_fields) { | |
899 | /* 'table' contains more flows than allowed. We might not be able to | |
900 | * evict them right away because of the asynchronous nature of flow | |
901 | * table changes. Schedule eviction for later. */ | |
902 | switch (ofproto->state) { | |
903 | case S_OPENFLOW: | |
904 | ofproto->state = S_EVICT; | |
905 | break; | |
906 | case S_EVICT: | |
907 | case S_FLUSH: | |
908 | /* We're already deleting flows, nothing more to do. */ | |
909 | break; | |
910 | } | |
911 | } | |
912 | } | |
913 | \f | |
81e2083f BP |
914 | bool |
915 | ofproto_has_snoops(const struct ofproto *ofproto) | |
916 | { | |
917 | return connmgr_has_snoops(ofproto->connmgr); | |
918 | } | |
919 | ||
064af421 | 920 | void |
81e2083f | 921 | ofproto_get_snoops(const struct ofproto *ofproto, struct sset *snoops) |
064af421 | 922 | { |
19a87e36 | 923 | connmgr_get_snoops(ofproto->connmgr, snoops); |
064af421 BP |
924 | } |
925 | ||
7ee20df1 BP |
926 | static void |
927 | ofproto_flush__(struct ofproto *ofproto) | |
928 | { | |
7ee20df1 | 929 | struct ofopgroup *group; |
d0918789 | 930 | struct oftable *table; |
7ee20df1 BP |
931 | |
932 | if (ofproto->ofproto_class->flush) { | |
933 | ofproto->ofproto_class->flush(ofproto); | |
934 | } | |
935 | ||
7024dffe | 936 | group = ofopgroup_create_unattached(ofproto); |
b772ded8 | 937 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
7ee20df1 BP |
938 | struct rule *rule, *next_rule; |
939 | struct cls_cursor cursor; | |
940 | ||
5c67e4af BP |
941 | if (table->flags & OFTABLE_HIDDEN) { |
942 | continue; | |
943 | } | |
944 | ||
d0918789 | 945 | cls_cursor_init(&cursor, &table->cls, NULL); |
7ee20df1 BP |
946 | CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) { |
947 | if (!rule->pending) { | |
948 | ofoperation_create(group, rule, OFOPERATION_DELETE); | |
d0918789 | 949 | oftable_remove_rule(rule); |
7ee20df1 BP |
950 | ofproto->ofproto_class->rule_destruct(rule); |
951 | } | |
952 | } | |
953 | } | |
954 | ofopgroup_submit(group); | |
955 | } | |
956 | ||
abe529af BP |
957 | static void |
958 | ofproto_destroy__(struct ofproto *ofproto) | |
959 | { | |
d0918789 | 960 | struct oftable *table; |
6c1491fb | 961 | |
7ee20df1 | 962 | assert(list_is_empty(&ofproto->pending)); |
dd5616b3 | 963 | assert(!ofproto->n_pending); |
7ee20df1 | 964 | |
abe529af | 965 | connmgr_destroy(ofproto->connmgr); |
fa066f01 | 966 | |
abe529af BP |
967 | hmap_remove(&all_ofprotos, &ofproto->hmap_node); |
968 | free(ofproto->name); | |
955a7127 | 969 | free(ofproto->type); |
abe529af BP |
970 | free(ofproto->mfr_desc); |
971 | free(ofproto->hw_desc); | |
972 | free(ofproto->sw_desc); | |
973 | free(ofproto->serial_desc); | |
974 | free(ofproto->dp_desc); | |
abe529af BP |
975 | hmap_destroy(&ofproto->ports); |
976 | shash_destroy(&ofproto->port_by_name); | |
6c1491fb | 977 | |
b772ded8 | 978 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
d0918789 | 979 | oftable_destroy(table); |
6c1491fb BP |
980 | } |
981 | free(ofproto->tables); | |
fa066f01 | 982 | |
7ee20df1 BP |
983 | hmap_destroy(&ofproto->deletions); |
984 | ||
52a90c29 BP |
985 | free(ofproto->vlan_bitmap); |
986 | ||
abe529af BP |
987 | ofproto->ofproto_class->dealloc(ofproto); |
988 | } | |
fa066f01 | 989 | |
064af421 BP |
990 | void |
991 | ofproto_destroy(struct ofproto *p) | |
992 | { | |
ca0f572c | 993 | struct ofport *ofport, *next_ofport; |
064af421 BP |
994 | |
995 | if (!p) { | |
996 | return; | |
997 | } | |
998 | ||
7ee20df1 | 999 | ofproto_flush__(p); |
4e8e4213 | 1000 | HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) { |
abe529af | 1001 | ofport_destroy(ofport); |
064af421 | 1002 | } |
064af421 | 1003 | |
abe529af BP |
1004 | p->ofproto_class->destruct(p); |
1005 | ofproto_destroy__(p); | |
064af421 BP |
1006 | } |
1007 | ||
abe529af BP |
1008 | /* Destroys the datapath with the respective 'name' and 'type'. With the Linux |
1009 | * kernel datapath, for example, this destroys the datapath in the kernel, and | |
1010 | * with the netdev-based datapath, it tears down the data structures that | |
1011 | * represent the datapath. | |
1012 | * | |
1013 | * The datapath should not be currently open as an ofproto. */ | |
064af421 | 1014 | int |
abe529af | 1015 | ofproto_delete(const char *name, const char *type) |
064af421 | 1016 | { |
abe529af BP |
1017 | const struct ofproto_class *class = ofproto_class_find__(type); |
1018 | return (!class ? EAFNOSUPPORT | |
1019 | : !class->del ? EACCES | |
1020 | : class->del(type, name)); | |
064af421 BP |
1021 | } |
1022 | ||
e9e28be3 BP |
1023 | static void |
1024 | process_port_change(struct ofproto *ofproto, int error, char *devname) | |
1025 | { | |
1026 | if (error == ENOBUFS) { | |
1027 | reinit_ports(ofproto); | |
1028 | } else if (!error) { | |
1029 | update_port(ofproto, devname); | |
1030 | free(devname); | |
1031 | } | |
1032 | } | |
1033 | ||
064af421 | 1034 | int |
abe529af | 1035 | ofproto_run(struct ofproto *p) |
064af421 | 1036 | { |
7436ed80 BP |
1037 | struct sset changed_netdevs; |
1038 | const char *changed_netdev; | |
031d8bff | 1039 | struct ofport *ofport; |
064af421 | 1040 | int error; |
064af421 | 1041 | |
abe529af | 1042 | error = p->ofproto_class->run(p); |
5fcc0d00 BP |
1043 | if (error && error != EAGAIN) { |
1044 | VLOG_ERR_RL(&rl, "%s: run failed (%s)", p->name, strerror(error)); | |
149f577a JG |
1045 | } |
1046 | ||
5bf0e941 | 1047 | if (p->ofproto_class->port_poll) { |
7436ed80 BP |
1048 | char *devname; |
1049 | ||
5bf0e941 BP |
1050 | while ((error = p->ofproto_class->port_poll(p, &devname)) != EAGAIN) { |
1051 | process_port_change(p, error, devname); | |
064af421 | 1052 | } |
e9e28be3 | 1053 | } |
031d8bff | 1054 | |
7436ed80 BP |
1055 | /* Update OpenFlow port status for any port whose netdev has changed. |
1056 | * | |
1057 | * Refreshing a given 'ofport' can cause an arbitrary ofport to be | |
1058 | * destroyed, so it's not safe to update ports directly from the | |
1059 | * HMAP_FOR_EACH loop, or even to use HMAP_FOR_EACH_SAFE. Instead, we | |
1060 | * need this two-phase approach. */ | |
1061 | sset_init(&changed_netdevs); | |
031d8bff EJ |
1062 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { |
1063 | unsigned int change_seq = netdev_change_seq(ofport->netdev); | |
1064 | if (ofport->change_seq != change_seq) { | |
1065 | ofport->change_seq = change_seq; | |
7436ed80 | 1066 | sset_add(&changed_netdevs, netdev_get_name(ofport->netdev)); |
031d8bff | 1067 | } |
064af421 | 1068 | } |
7436ed80 BP |
1069 | SSET_FOR_EACH (changed_netdev, &changed_netdevs) { |
1070 | update_port(p, changed_netdev); | |
1071 | } | |
1072 | sset_destroy(&changed_netdevs); | |
064af421 | 1073 | |
7ee20df1 BP |
1074 | switch (p->state) { |
1075 | case S_OPENFLOW: | |
1076 | connmgr_run(p->connmgr, handle_openflow); | |
1077 | break; | |
1078 | ||
254750ce BP |
1079 | case S_EVICT: |
1080 | connmgr_run(p->connmgr, NULL); | |
1081 | ofproto_evict(p); | |
1082 | if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) { | |
1083 | p->state = S_OPENFLOW; | |
1084 | } | |
1085 | break; | |
1086 | ||
7ee20df1 BP |
1087 | case S_FLUSH: |
1088 | connmgr_run(p->connmgr, NULL); | |
1089 | ofproto_flush__(p); | |
1090 | if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) { | |
1091 | connmgr_flushed(p->connmgr); | |
1092 | p->state = S_OPENFLOW; | |
1093 | } | |
1094 | break; | |
1095 | ||
1096 | default: | |
1097 | NOT_REACHED(); | |
1098 | } | |
064af421 | 1099 | |
a5b8d268 BP |
1100 | if (time_msec() >= p->next_op_report) { |
1101 | long long int ago = (time_msec() - p->first_op) / 1000; | |
1102 | long long int interval = (p->last_op - p->first_op) / 1000; | |
1103 | struct ds s; | |
1104 | ||
1105 | ds_init(&s); | |
1106 | ds_put_format(&s, "%d flow_mods ", | |
1107 | p->n_add + p->n_delete + p->n_modify); | |
1108 | if (interval == ago) { | |
1109 | ds_put_format(&s, "in the last %lld s", ago); | |
1110 | } else if (interval) { | |
1111 | ds_put_format(&s, "in the %lld s starting %lld s ago", | |
1112 | interval, ago); | |
1113 | } else { | |
1114 | ds_put_format(&s, "%lld s ago", ago); | |
1115 | } | |
1116 | ||
1117 | ds_put_cstr(&s, " ("); | |
1118 | if (p->n_add) { | |
1119 | ds_put_format(&s, "%d adds, ", p->n_add); | |
1120 | } | |
1121 | if (p->n_delete) { | |
1122 | ds_put_format(&s, "%d deletes, ", p->n_delete); | |
1123 | } | |
1124 | if (p->n_modify) { | |
1125 | ds_put_format(&s, "%d modifications, ", p->n_modify); | |
1126 | } | |
1127 | s.length -= 2; | |
1128 | ds_put_char(&s, ')'); | |
1129 | ||
fbfa2911 | 1130 | VLOG_INFO("%s: %s", p->name, ds_cstr(&s)); |
a5b8d268 BP |
1131 | ds_destroy(&s); |
1132 | ||
1133 | p->n_add = p->n_delete = p->n_modify = 0; | |
1134 | p->next_op_report = LLONG_MAX; | |
1135 | } | |
1136 | ||
5fcc0d00 BP |
1137 | return error; |
1138 | } | |
1139 | ||
1140 | /* Performs periodic activity required by 'ofproto' that needs to be done | |
1141 | * with the least possible latency. | |
1142 | * | |
1143 | * It makes sense to call this function a couple of times per poll loop, to | |
1144 | * provide a significant performance boost on some benchmarks with the | |
1145 | * ofproto-dpif implementation. */ | |
1146 | int | |
1147 | ofproto_run_fast(struct ofproto *p) | |
1148 | { | |
1149 | int error; | |
1150 | ||
1151 | error = p->ofproto_class->run_fast ? p->ofproto_class->run_fast(p) : 0; | |
1152 | if (error && error != EAGAIN) { | |
1153 | VLOG_ERR_RL(&rl, "%s: fastpath run failed (%s)", | |
1154 | p->name, strerror(error)); | |
1155 | } | |
1156 | return error; | |
064af421 BP |
1157 | } |
1158 | ||
1159 | void | |
1160 | ofproto_wait(struct ofproto *p) | |
1161 | { | |
031d8bff EJ |
1162 | struct ofport *ofport; |
1163 | ||
abe529af | 1164 | p->ofproto_class->wait(p); |
5bf0e941 BP |
1165 | if (p->ofproto_class->port_poll_wait) { |
1166 | p->ofproto_class->port_poll_wait(p); | |
e7934396 | 1167 | } |
031d8bff EJ |
1168 | |
1169 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
1170 | if (ofport->change_seq != netdev_change_seq(ofport->netdev)) { | |
1171 | poll_immediate_wake(); | |
1172 | } | |
1173 | } | |
7ee20df1 BP |
1174 | |
1175 | switch (p->state) { | |
1176 | case S_OPENFLOW: | |
1177 | connmgr_wait(p->connmgr, true); | |
1178 | break; | |
1179 | ||
254750ce | 1180 | case S_EVICT: |
7ee20df1 BP |
1181 | case S_FLUSH: |
1182 | connmgr_wait(p->connmgr, false); | |
1183 | if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) { | |
1184 | poll_immediate_wake(); | |
1185 | } | |
1186 | break; | |
1187 | } | |
064af421 BP |
1188 | } |
1189 | ||
064af421 BP |
1190 | bool |
1191 | ofproto_is_alive(const struct ofproto *p) | |
1192 | { | |
19a87e36 | 1193 | return connmgr_has_controllers(p->connmgr); |
064af421 BP |
1194 | } |
1195 | ||
0d085684 BP |
1196 | /* Adds some memory usage statistics for 'ofproto' into 'usage', for use with |
1197 | * memory_report(). */ | |
1198 | void | |
1199 | ofproto_get_memory_usage(const struct ofproto *ofproto, struct simap *usage) | |
1200 | { | |
1201 | const struct oftable *table; | |
1202 | unsigned int n_rules; | |
1203 | ||
1204 | simap_increase(usage, "ports", hmap_count(&ofproto->ports)); | |
1205 | simap_increase(usage, "ops", | |
1206 | ofproto->n_pending + hmap_count(&ofproto->deletions)); | |
1207 | ||
1208 | n_rules = 0; | |
1209 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
1210 | n_rules += classifier_count(&table->cls); | |
1211 | } | |
1212 | simap_increase(usage, "rules", n_rules); | |
1213 | ||
1214 | if (ofproto->ofproto_class->get_memory_usage) { | |
1215 | ofproto->ofproto_class->get_memory_usage(ofproto, usage); | |
1216 | } | |
1217 | ||
1218 | connmgr_get_memory_usage(ofproto->connmgr, usage); | |
1219 | } | |
1220 | ||
bffc0589 | 1221 | void |
2cdcb898 | 1222 | ofproto_get_ofproto_controller_info(const struct ofproto *ofproto, |
bffc0589 AE |
1223 | struct shash *info) |
1224 | { | |
19a87e36 | 1225 | connmgr_get_controller_info(ofproto->connmgr, info); |
bffc0589 AE |
1226 | } |
1227 | ||
1228 | void | |
1229 | ofproto_free_ofproto_controller_info(struct shash *info) | |
1230 | { | |
72ba2ed3 | 1231 | connmgr_free_controller_info(info); |
bffc0589 AE |
1232 | } |
1233 | ||
b5827b24 BP |
1234 | /* Makes a deep copy of 'old' into 'port'. */ |
1235 | void | |
1236 | ofproto_port_clone(struct ofproto_port *port, const struct ofproto_port *old) | |
1237 | { | |
1238 | port->name = xstrdup(old->name); | |
1239 | port->type = xstrdup(old->type); | |
1240 | port->ofp_port = old->ofp_port; | |
1241 | } | |
1242 | ||
1243 | /* Frees memory allocated to members of 'ofproto_port'. | |
3a6ccc8c | 1244 | * |
b5827b24 BP |
1245 | * Do not call this function on an ofproto_port obtained from |
1246 | * ofproto_port_dump_next(): that function retains ownership of the data in the | |
1247 | * ofproto_port. */ | |
1248 | void | |
1249 | ofproto_port_destroy(struct ofproto_port *ofproto_port) | |
1250 | { | |
1251 | free(ofproto_port->name); | |
1252 | free(ofproto_port->type); | |
1253 | } | |
1254 | ||
b5827b24 | 1255 | /* Initializes 'dump' to begin dumping the ports in an ofproto. |
3a6ccc8c | 1256 | * |
b5827b24 BP |
1257 | * This function provides no status indication. An error status for the entire |
1258 | * dump operation is provided when it is completed by calling | |
1259 | * ofproto_port_dump_done(). | |
1260 | */ | |
1261 | void | |
1262 | ofproto_port_dump_start(struct ofproto_port_dump *dump, | |
1263 | const struct ofproto *ofproto) | |
1264 | { | |
abe529af BP |
1265 | dump->ofproto = ofproto; |
1266 | dump->error = ofproto->ofproto_class->port_dump_start(ofproto, | |
1267 | &dump->state); | |
b5827b24 BP |
1268 | } |
1269 | ||
1270 | /* Attempts to retrieve another port from 'dump', which must have been created | |
1271 | * with ofproto_port_dump_start(). On success, stores a new ofproto_port into | |
1272 | * 'port' and returns true. On failure, returns false. | |
1273 | * | |
1274 | * Failure might indicate an actual error or merely that the last port has been | |
1275 | * dumped. An error status for the entire dump operation is provided when it | |
1276 | * is completed by calling ofproto_port_dump_done(). | |
1277 | * | |
1278 | * The ofproto owns the data stored in 'port'. It will remain valid until at | |
1279 | * least the next time 'dump' is passed to ofproto_port_dump_next() or | |
1280 | * ofproto_port_dump_done(). */ | |
1281 | bool | |
1282 | ofproto_port_dump_next(struct ofproto_port_dump *dump, | |
1283 | struct ofproto_port *port) | |
1284 | { | |
abe529af BP |
1285 | const struct ofproto *ofproto = dump->ofproto; |
1286 | ||
1287 | if (dump->error) { | |
1288 | return false; | |
1289 | } | |
b5827b24 | 1290 | |
abe529af BP |
1291 | dump->error = ofproto->ofproto_class->port_dump_next(ofproto, dump->state, |
1292 | port); | |
1293 | if (dump->error) { | |
1294 | ofproto->ofproto_class->port_dump_done(ofproto, dump->state); | |
1295 | return false; | |
b5827b24 | 1296 | } |
abe529af | 1297 | return true; |
b5827b24 BP |
1298 | } |
1299 | ||
1300 | /* Completes port table dump operation 'dump', which must have been created | |
1301 | * with ofproto_port_dump_start(). Returns 0 if the dump operation was | |
1302 | * error-free, otherwise a positive errno value describing the problem. */ | |
3a6ccc8c | 1303 | int |
b5827b24 | 1304 | ofproto_port_dump_done(struct ofproto_port_dump *dump) |
3a6ccc8c | 1305 | { |
abe529af BP |
1306 | const struct ofproto *ofproto = dump->ofproto; |
1307 | if (!dump->error) { | |
1308 | dump->error = ofproto->ofproto_class->port_dump_done(ofproto, | |
1309 | dump->state); | |
1310 | } | |
1311 | return dump->error == EOF ? 0 : dump->error; | |
b5827b24 BP |
1312 | } |
1313 | ||
1314 | /* Attempts to add 'netdev' as a port on 'ofproto'. If successful, returns 0 | |
892815f5 | 1315 | * and sets '*ofp_portp' to the new port's OpenFlow port number (if 'ofp_portp' |
b5827b24 BP |
1316 | * is non-null). On failure, returns a positive errno value and sets |
1317 | * '*ofp_portp' to OFPP_NONE (if 'ofp_portp' is non-null). */ | |
1318 | int | |
1319 | ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev, | |
1320 | uint16_t *ofp_portp) | |
1321 | { | |
abe529af | 1322 | uint16_t ofp_port; |
3a6ccc8c BP |
1323 | int error; |
1324 | ||
abe529af | 1325 | error = ofproto->ofproto_class->port_add(ofproto, netdev, &ofp_port); |
1fa24dea BP |
1326 | if (!error) { |
1327 | update_port(ofproto, netdev_get_name(netdev)); | |
1328 | } | |
b5827b24 | 1329 | if (ofp_portp) { |
abe529af | 1330 | *ofp_portp = error ? OFPP_NONE : ofp_port; |
3a6ccc8c BP |
1331 | } |
1332 | return error; | |
1333 | } | |
1334 | ||
b5827b24 BP |
1335 | /* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and |
1336 | * initializes '*port' appropriately; on failure, returns a positive errno | |
1337 | * value. | |
1338 | * | |
abe529af | 1339 | * The caller owns the data in 'ofproto_port' and must free it with |
b5827b24 BP |
1340 | * ofproto_port_destroy() when it is no longer needed. */ |
1341 | int | |
1342 | ofproto_port_query_by_name(const struct ofproto *ofproto, const char *devname, | |
1343 | struct ofproto_port *port) | |
a4e2e1f2 | 1344 | { |
b5827b24 BP |
1345 | int error; |
1346 | ||
abe529af BP |
1347 | error = ofproto->ofproto_class->port_query_by_name(ofproto, devname, port); |
1348 | if (error) { | |
1349 | memset(port, 0, sizeof *port); | |
b5827b24 BP |
1350 | } |
1351 | return error; | |
a4e2e1f2 EJ |
1352 | } |
1353 | ||
b5827b24 | 1354 | /* Deletes port number 'ofp_port' from the datapath for 'ofproto'. |
3a6ccc8c | 1355 | * Returns 0 if successful, otherwise a positive errno. */ |
064af421 | 1356 | int |
b5827b24 | 1357 | ofproto_port_del(struct ofproto *ofproto, uint16_t ofp_port) |
064af421 | 1358 | { |
abe529af | 1359 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1264ec95 | 1360 | const char *name = ofport ? netdev_get_name(ofport->netdev) : "<unknown>"; |
3cf10406 | 1361 | int error; |
cdee00fd | 1362 | |
abe529af | 1363 | error = ofproto->ofproto_class->port_del(ofproto, ofp_port); |
892815f5 | 1364 | if (!error && ofport) { |
1264ec95 BP |
1365 | /* 'name' is the netdev's name and update_port() is going to close the |
1366 | * netdev. Just in case update_port() refers to 'name' after it | |
3a6ccc8c BP |
1367 | * destroys 'ofport', make a copy of it around the update_port() |
1368 | * call. */ | |
1369 | char *devname = xstrdup(name); | |
1370 | update_port(ofproto, devname); | |
1371 | free(devname); | |
3cf10406 BP |
1372 | } |
1373 | return error; | |
064af421 BP |
1374 | } |
1375 | ||
6c1491fb | 1376 | /* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and |
fa8b054f BP |
1377 | * performs the 'n_actions' actions in 'actions'. The new flow will not |
1378 | * timeout. | |
1379 | * | |
1380 | * If cls_rule->priority is in the range of priorities supported by OpenFlow | |
1381 | * (0...65535, inclusive) then the flow will be visible to OpenFlow | |
1382 | * controllers; otherwise, it will be hidden. | |
1383 | * | |
f25d0cf3 | 1384 | * The caller retains ownership of 'cls_rule' and 'ofpacts'. |
6c1491fb BP |
1385 | * |
1386 | * This is a helper function for in-band control and fail-open. */ | |
064af421 | 1387 | void |
7ee20df1 | 1388 | ofproto_add_flow(struct ofproto *ofproto, const struct cls_rule *cls_rule, |
f25d0cf3 | 1389 | const struct ofpact *ofpacts, size_t ofpacts_len) |
064af421 | 1390 | { |
7ee20df1 BP |
1391 | const struct rule *rule; |
1392 | ||
1393 | rule = rule_from_cls_rule(classifier_find_rule_exactly( | |
d0918789 | 1394 | &ofproto->tables[0].cls, cls_rule)); |
f25d0cf3 BP |
1395 | if (!rule || !ofpacts_equal(rule->ofpacts, rule->ofpacts_len, |
1396 | ofpacts, ofpacts_len)) { | |
a9a2da38 | 1397 | struct ofputil_flow_mod fm; |
7ee20df1 BP |
1398 | |
1399 | memset(&fm, 0, sizeof fm); | |
1400 | fm.cr = *cls_rule; | |
1401 | fm.buffer_id = UINT32_MAX; | |
f25d0cf3 BP |
1402 | fm.ofpacts = xmemdup(ofpacts, ofpacts_len); |
1403 | fm.ofpacts_len = ofpacts_len; | |
7ee20df1 | 1404 | add_flow(ofproto, NULL, &fm, NULL); |
f25d0cf3 | 1405 | free(fm.ofpacts); |
7ee20df1 | 1406 | } |
064af421 BP |
1407 | } |
1408 | ||
75a75043 | 1409 | /* Executes the flow modification specified in 'fm'. Returns 0 on success, an |
90bf1e07 BP |
1410 | * OFPERR_* OpenFlow error code on failure, or OFPROTO_POSTPONE if the |
1411 | * operation cannot be initiated now but may be retried later. | |
75a75043 BP |
1412 | * |
1413 | * This is a helper function for in-band control and fail-open. */ | |
1414 | int | |
1415 | ofproto_flow_mod(struct ofproto *ofproto, const struct ofputil_flow_mod *fm) | |
1416 | { | |
1417 | return handle_flow_mod__(ofproto, NULL, fm, NULL); | |
1418 | } | |
1419 | ||
6c1491fb BP |
1420 | /* Searches for a rule with matching criteria exactly equal to 'target' in |
1421 | * ofproto's table 0 and, if it finds one, deletes it. | |
1422 | * | |
1423 | * This is a helper function for in-band control and fail-open. */ | |
7ee20df1 | 1424 | bool |
cf3fad8a | 1425 | ofproto_delete_flow(struct ofproto *ofproto, const struct cls_rule *target) |
064af421 BP |
1426 | { |
1427 | struct rule *rule; | |
1428 | ||
6c1491fb | 1429 | rule = rule_from_cls_rule(classifier_find_rule_exactly( |
d0918789 | 1430 | &ofproto->tables[0].cls, target)); |
7ee20df1 BP |
1431 | if (!rule) { |
1432 | /* No such rule -> success. */ | |
1433 | return true; | |
1434 | } else if (rule->pending) { | |
1435 | /* An operation on the rule is already pending -> failure. | |
1436 | * Caller must retry later if it's important. */ | |
1437 | return false; | |
1438 | } else { | |
1439 | /* Initiate deletion -> success. */ | |
7024dffe | 1440 | struct ofopgroup *group = ofopgroup_create_unattached(ofproto); |
7ee20df1 | 1441 | ofoperation_create(group, rule, OFOPERATION_DELETE); |
d0918789 | 1442 | oftable_remove_rule(rule); |
254750ce | 1443 | ofproto->ofproto_class->rule_destruct(rule); |
7ee20df1 BP |
1444 | ofopgroup_submit(group); |
1445 | return true; | |
bcf84111 | 1446 | } |
5ecc9d81 | 1447 | |
142e1f5c BP |
1448 | } |
1449 | ||
7ee20df1 BP |
1450 | /* Starts the process of deleting all of the flows from all of ofproto's flow |
1451 | * tables and then reintroducing the flows required by in-band control and | |
1452 | * fail-open. The process will complete in a later call to ofproto_run(). */ | |
142e1f5c BP |
1453 | void |
1454 | ofproto_flush_flows(struct ofproto *ofproto) | |
1455 | { | |
7ee20df1 BP |
1456 | COVERAGE_INC(ofproto_flush); |
1457 | ofproto->state = S_FLUSH; | |
064af421 BP |
1458 | } |
1459 | \f | |
1460 | static void | |
1461 | reinit_ports(struct ofproto *p) | |
1462 | { | |
abe529af | 1463 | struct ofproto_port_dump dump; |
b3c01ed3 | 1464 | struct sset devnames; |
064af421 | 1465 | struct ofport *ofport; |
abe529af | 1466 | struct ofproto_port ofproto_port; |
b3c01ed3 | 1467 | const char *devname; |
064af421 | 1468 | |
898bf89d JP |
1469 | COVERAGE_INC(ofproto_reinit_ports); |
1470 | ||
b3c01ed3 | 1471 | sset_init(&devnames); |
4e8e4213 | 1472 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { |
1264ec95 | 1473 | sset_add(&devnames, netdev_get_name(ofport->netdev)); |
064af421 | 1474 | } |
abe529af BP |
1475 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { |
1476 | sset_add(&devnames, ofproto_port.name); | |
064af421 | 1477 | } |
064af421 | 1478 | |
b3c01ed3 BP |
1479 | SSET_FOR_EACH (devname, &devnames) { |
1480 | update_port(p, devname); | |
064af421 | 1481 | } |
b3c01ed3 | 1482 | sset_destroy(&devnames); |
064af421 BP |
1483 | } |
1484 | ||
fbfa2911 BP |
1485 | /* Opens and returns a netdev for 'ofproto_port' in 'ofproto', or a null |
1486 | * pointer if the netdev cannot be opened. On success, also fills in | |
1487 | * 'opp'. */ | |
b33951b8 | 1488 | static struct netdev * |
fbfa2911 BP |
1489 | ofport_open(const struct ofproto *ofproto, |
1490 | const struct ofproto_port *ofproto_port, | |
9e1fd49b | 1491 | struct ofputil_phy_port *pp) |
064af421 BP |
1492 | { |
1493 | enum netdev_flags flags; | |
064af421 | 1494 | struct netdev *netdev; |
064af421 BP |
1495 | int error; |
1496 | ||
18812dff | 1497 | error = netdev_open(ofproto_port->name, ofproto_port->type, &netdev); |
064af421 | 1498 | if (error) { |
fbfa2911 | 1499 | VLOG_WARN_RL(&rl, "%s: ignoring port %s (%"PRIu16") because netdev %s " |
064af421 | 1500 | "cannot be opened (%s)", |
fbfa2911 | 1501 | ofproto->name, |
abe529af BP |
1502 | ofproto_port->name, ofproto_port->ofp_port, |
1503 | ofproto_port->name, strerror(error)); | |
064af421 BP |
1504 | return NULL; |
1505 | } | |
1506 | ||
9e1fd49b BP |
1507 | pp->port_no = ofproto_port->ofp_port; |
1508 | netdev_get_etheraddr(netdev, pp->hw_addr); | |
1509 | ovs_strlcpy(pp->name, ofproto_port->name, sizeof pp->name); | |
064af421 | 1510 | netdev_get_flags(netdev, &flags); |
9e1fd49b BP |
1511 | pp->config = flags & NETDEV_UP ? 0 : OFPUTIL_PC_PORT_DOWN; |
1512 | pp->state = netdev_get_carrier(netdev) ? 0 : OFPUTIL_PS_LINK_DOWN; | |
1513 | netdev_get_features(netdev, &pp->curr, &pp->advertised, | |
1514 | &pp->supported, &pp->peer); | |
1515 | pp->curr_speed = netdev_features_to_bps(pp->curr); | |
1516 | pp->max_speed = netdev_features_to_bps(pp->supported); | |
118c4676 | 1517 | |
b33951b8 | 1518 | return netdev; |
064af421 BP |
1519 | } |
1520 | ||
b33951b8 | 1521 | /* Returns true if most fields of 'a' and 'b' are equal. Differences in name, |
9e1fd49b | 1522 | * port number, and 'config' bits other than OFPUTIL_PS_LINK_DOWN are |
b33951b8 BP |
1523 | * disregarded. */ |
1524 | static bool | |
9e1fd49b BP |
1525 | ofport_equal(const struct ofputil_phy_port *a, |
1526 | const struct ofputil_phy_port *b) | |
064af421 | 1527 | { |
9e1fd49b | 1528 | return (eth_addr_equals(a->hw_addr, b->hw_addr) |
064af421 | 1529 | && a->state == b->state |
9e1fd49b | 1530 | && !((a->config ^ b->config) & OFPUTIL_PC_PORT_DOWN) |
064af421 BP |
1531 | && a->curr == b->curr |
1532 | && a->advertised == b->advertised | |
1533 | && a->supported == b->supported | |
9e1fd49b BP |
1534 | && a->peer == b->peer |
1535 | && a->curr_speed == b->curr_speed | |
1536 | && a->max_speed == b->max_speed); | |
064af421 BP |
1537 | } |
1538 | ||
b33951b8 BP |
1539 | /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'. |
1540 | * The caller must ensure that 'p' does not have a conflicting ofport (that is, | |
1541 | * one with the same name or port number). */ | |
064af421 | 1542 | static void |
b33951b8 | 1543 | ofport_install(struct ofproto *p, |
9e1fd49b | 1544 | struct netdev *netdev, const struct ofputil_phy_port *pp) |
064af421 | 1545 | { |
b33951b8 BP |
1546 | const char *netdev_name = netdev_get_name(netdev); |
1547 | struct ofport *ofport; | |
abe529af | 1548 | int error; |
72b06300 | 1549 | |
b33951b8 | 1550 | /* Create ofport. */ |
abe529af BP |
1551 | ofport = p->ofproto_class->port_alloc(); |
1552 | if (!ofport) { | |
1553 | error = ENOMEM; | |
1554 | goto error; | |
1555 | } | |
0f7d71a5 | 1556 | ofport->ofproto = p; |
b33951b8 | 1557 | ofport->netdev = netdev; |
031d8bff | 1558 | ofport->change_seq = netdev_change_seq(netdev); |
9e1fd49b BP |
1559 | ofport->pp = *pp; |
1560 | ofport->ofp_port = pp->port_no; | |
b33951b8 BP |
1561 | |
1562 | /* Add port to 'p'. */ | |
abe529af | 1563 | hmap_insert(&p->ports, &ofport->hmap_node, hash_int(ofport->ofp_port, 0)); |
72b06300 | 1564 | shash_add(&p->port_by_name, netdev_name, ofport); |
abe529af | 1565 | |
ada3428f | 1566 | update_mtu(p, ofport); |
9197df76 | 1567 | |
abe529af BP |
1568 | /* Let the ofproto_class initialize its private data. */ |
1569 | error = p->ofproto_class->port_construct(ofport); | |
1570 | if (error) { | |
1571 | goto error; | |
1572 | } | |
9e1fd49b | 1573 | connmgr_send_port_status(p->connmgr, pp, OFPPR_ADD); |
abe529af BP |
1574 | return; |
1575 | ||
1576 | error: | |
1577 | VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)", | |
1578 | p->name, netdev_name, strerror(error)); | |
1579 | if (ofport) { | |
1580 | ofport_destroy__(ofport); | |
1581 | } else { | |
1582 | netdev_close(netdev); | |
72b06300 | 1583 | } |
064af421 BP |
1584 | } |
1585 | ||
b33951b8 | 1586 | /* Removes 'ofport' from 'p' and destroys it. */ |
064af421 | 1587 | static void |
0f7d71a5 | 1588 | ofport_remove(struct ofport *ofport) |
064af421 | 1589 | { |
9e1fd49b | 1590 | connmgr_send_port_status(ofport->ofproto->connmgr, &ofport->pp, |
fa066f01 | 1591 | OFPPR_DELETE); |
abe529af | 1592 | ofport_destroy(ofport); |
b33951b8 BP |
1593 | } |
1594 | ||
1595 | /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and | |
1596 | * destroys it. */ | |
1597 | static void | |
1598 | ofport_remove_with_name(struct ofproto *ofproto, const char *name) | |
1599 | { | |
1600 | struct ofport *port = shash_find_data(&ofproto->port_by_name, name); | |
1601 | if (port) { | |
0f7d71a5 | 1602 | ofport_remove(port); |
b33951b8 BP |
1603 | } |
1604 | } | |
1605 | ||
9e1fd49b | 1606 | /* Updates 'port' with new 'pp' description. |
b33951b8 BP |
1607 | * |
1608 | * Does not handle a name or port number change. The caller must implement | |
1609 | * such a change as a delete followed by an add. */ | |
1610 | static void | |
9e1fd49b | 1611 | ofport_modified(struct ofport *port, struct ofputil_phy_port *pp) |
b33951b8 | 1612 | { |
9e1fd49b BP |
1613 | memcpy(port->pp.hw_addr, pp->hw_addr, ETH_ADDR_LEN); |
1614 | port->pp.config = ((port->pp.config & ~OFPUTIL_PC_PORT_DOWN) | |
1615 | | (pp->config & OFPUTIL_PC_PORT_DOWN)); | |
1616 | port->pp.state = pp->state; | |
1617 | port->pp.curr = pp->curr; | |
1618 | port->pp.advertised = pp->advertised; | |
1619 | port->pp.supported = pp->supported; | |
1620 | port->pp.peer = pp->peer; | |
1621 | port->pp.curr_speed = pp->curr_speed; | |
1622 | port->pp.max_speed = pp->max_speed; | |
b33951b8 | 1623 | |
9e1fd49b | 1624 | connmgr_send_port_status(port->ofproto->connmgr, &port->pp, OFPPR_MODIFY); |
064af421 BP |
1625 | } |
1626 | ||
5a2dfd47 JP |
1627 | /* Update OpenFlow 'state' in 'port' and notify controller. */ |
1628 | void | |
9e1fd49b | 1629 | ofproto_port_set_state(struct ofport *port, enum ofputil_port_state state) |
5a2dfd47 | 1630 | { |
9e1fd49b BP |
1631 | if (port->pp.state != state) { |
1632 | port->pp.state = state; | |
1633 | connmgr_send_port_status(port->ofproto->connmgr, &port->pp, | |
5a2dfd47 JP |
1634 | OFPPR_MODIFY); |
1635 | } | |
1636 | } | |
1637 | ||
abe529af BP |
1638 | void |
1639 | ofproto_port_unregister(struct ofproto *ofproto, uint16_t ofp_port) | |
e7934396 | 1640 | { |
abe529af BP |
1641 | struct ofport *port = ofproto_get_port(ofproto, ofp_port); |
1642 | if (port) { | |
52a90c29 BP |
1643 | if (port->ofproto->ofproto_class->set_realdev) { |
1644 | port->ofproto->ofproto_class->set_realdev(port, 0, 0); | |
1645 | } | |
b308140a JP |
1646 | if (port->ofproto->ofproto_class->set_stp_port) { |
1647 | port->ofproto->ofproto_class->set_stp_port(port, NULL); | |
1648 | } | |
abe529af | 1649 | if (port->ofproto->ofproto_class->set_cfm) { |
a5610457 | 1650 | port->ofproto->ofproto_class->set_cfm(port, NULL); |
abe529af BP |
1651 | } |
1652 | if (port->ofproto->ofproto_class->bundle_remove) { | |
1653 | port->ofproto->ofproto_class->bundle_remove(port); | |
e7934396 BP |
1654 | } |
1655 | } | |
1656 | } | |
1657 | ||
1658 | static void | |
abe529af | 1659 | ofport_destroy__(struct ofport *port) |
e7934396 | 1660 | { |
abe529af BP |
1661 | struct ofproto *ofproto = port->ofproto; |
1662 | const char *name = netdev_get_name(port->netdev); | |
fa066f01 | 1663 | |
abe529af BP |
1664 | hmap_remove(&ofproto->ports, &port->hmap_node); |
1665 | shash_delete(&ofproto->port_by_name, | |
1666 | shash_find(&ofproto->port_by_name, name)); | |
fa066f01 | 1667 | |
abe529af BP |
1668 | netdev_close(port->netdev); |
1669 | ofproto->ofproto_class->port_dealloc(port); | |
e7934396 BP |
1670 | } |
1671 | ||
064af421 | 1672 | static void |
abe529af | 1673 | ofport_destroy(struct ofport *port) |
064af421 | 1674 | { |
fa066f01 | 1675 | if (port) { |
abe529af BP |
1676 | port->ofproto->ofproto_class->port_destruct(port); |
1677 | ofport_destroy__(port); | |
1678 | } | |
064af421 BP |
1679 | } |
1680 | ||
abe529af BP |
1681 | struct ofport * |
1682 | ofproto_get_port(const struct ofproto *ofproto, uint16_t ofp_port) | |
ca0f572c BP |
1683 | { |
1684 | struct ofport *port; | |
1685 | ||
4e8e4213 | 1686 | HMAP_FOR_EACH_IN_BUCKET (port, hmap_node, |
abe529af BP |
1687 | hash_int(ofp_port, 0), &ofproto->ports) { |
1688 | if (port->ofp_port == ofp_port) { | |
ca0f572c BP |
1689 | return port; |
1690 | } | |
1691 | } | |
1692 | return NULL; | |
1693 | } | |
1694 | ||
6527c598 PS |
1695 | int |
1696 | ofproto_port_get_stats(const struct ofport *port, struct netdev_stats *stats) | |
1697 | { | |
1698 | struct ofproto *ofproto = port->ofproto; | |
1699 | int error; | |
1700 | ||
1701 | if (ofproto->ofproto_class->port_get_stats) { | |
1702 | error = ofproto->ofproto_class->port_get_stats(port, stats); | |
1703 | } else { | |
1704 | error = EOPNOTSUPP; | |
1705 | } | |
1706 | ||
1707 | return error; | |
1708 | } | |
1709 | ||
064af421 | 1710 | static void |
b33951b8 | 1711 | update_port(struct ofproto *ofproto, const char *name) |
064af421 | 1712 | { |
abe529af | 1713 | struct ofproto_port ofproto_port; |
9e1fd49b | 1714 | struct ofputil_phy_port pp; |
b33951b8 BP |
1715 | struct netdev *netdev; |
1716 | struct ofport *port; | |
064af421 BP |
1717 | |
1718 | COVERAGE_INC(ofproto_update_port); | |
c874dc6d | 1719 | |
b33951b8 | 1720 | /* Fetch 'name''s location and properties from the datapath. */ |
abe529af | 1721 | netdev = (!ofproto_port_query_by_name(ofproto, name, &ofproto_port) |
fbfa2911 | 1722 | ? ofport_open(ofproto, &ofproto_port, &pp) |
b33951b8 BP |
1723 | : NULL); |
1724 | if (netdev) { | |
abe529af | 1725 | port = ofproto_get_port(ofproto, ofproto_port.ofp_port); |
b33951b8 | 1726 | if (port && !strcmp(netdev_get_name(port->netdev), name)) { |
e65942a0 BP |
1727 | struct netdev *old_netdev = port->netdev; |
1728 | ||
b33951b8 | 1729 | /* 'name' hasn't changed location. Any properties changed? */ |
9e1fd49b BP |
1730 | if (!ofport_equal(&port->pp, &pp)) { |
1731 | ofport_modified(port, &pp); | |
abe529af BP |
1732 | } |
1733 | ||
ada3428f | 1734 | update_mtu(ofproto, port); |
9197df76 | 1735 | |
e65942a0 BP |
1736 | /* Install the newly opened netdev in case it has changed. |
1737 | * Don't close the old netdev yet in case port_modified has to | |
1738 | * remove a retained reference to it.*/ | |
abe529af | 1739 | port->netdev = netdev; |
031d8bff | 1740 | port->change_seq = netdev_change_seq(netdev); |
abe529af BP |
1741 | |
1742 | if (port->ofproto->ofproto_class->port_modified) { | |
1743 | port->ofproto->ofproto_class->port_modified(port); | |
b33951b8 | 1744 | } |
e65942a0 BP |
1745 | |
1746 | netdev_close(old_netdev); | |
b33951b8 BP |
1747 | } else { |
1748 | /* If 'port' is nonnull then its name differs from 'name' and thus | |
1749 | * we should delete it. If we think there's a port named 'name' | |
1750 | * then its port number must be wrong now so delete it too. */ | |
1751 | if (port) { | |
0f7d71a5 | 1752 | ofport_remove(port); |
b33951b8 BP |
1753 | } |
1754 | ofport_remove_with_name(ofproto, name); | |
9e1fd49b | 1755 | ofport_install(ofproto, netdev, &pp); |
c874dc6d | 1756 | } |
b33951b8 BP |
1757 | } else { |
1758 | /* Any port named 'name' is gone now. */ | |
1759 | ofport_remove_with_name(ofproto, name); | |
c874dc6d | 1760 | } |
abe529af | 1761 | ofproto_port_destroy(&ofproto_port); |
064af421 BP |
1762 | } |
1763 | ||
1764 | static int | |
1765 | init_ports(struct ofproto *p) | |
1766 | { | |
abe529af BP |
1767 | struct ofproto_port_dump dump; |
1768 | struct ofproto_port ofproto_port; | |
1769 | ||
1770 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { | |
1771 | uint16_t ofp_port = ofproto_port.ofp_port; | |
1772 | if (ofproto_get_port(p, ofp_port)) { | |
fbfa2911 BP |
1773 | VLOG_WARN_RL(&rl, "%s: ignoring duplicate port %"PRIu16" " |
1774 | "in datapath", p->name, ofp_port); | |
abe529af | 1775 | } else if (shash_find(&p->port_by_name, ofproto_port.name)) { |
fbfa2911 BP |
1776 | VLOG_WARN_RL(&rl, "%s: ignoring duplicate device %s in datapath", |
1777 | p->name, ofproto_port.name); | |
abe529af | 1778 | } else { |
9e1fd49b | 1779 | struct ofputil_phy_port pp; |
b33951b8 BP |
1780 | struct netdev *netdev; |
1781 | ||
fbfa2911 | 1782 | netdev = ofport_open(p, &ofproto_port, &pp); |
b33951b8 | 1783 | if (netdev) { |
9e1fd49b | 1784 | ofport_install(p, netdev, &pp); |
064af421 BP |
1785 | } |
1786 | } | |
1787 | } | |
b0ec0f27 | 1788 | |
064af421 BP |
1789 | return 0; |
1790 | } | |
9197df76 JP |
1791 | |
1792 | /* Find the minimum MTU of all non-datapath devices attached to 'p'. | |
1793 | * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */ | |
1794 | static int | |
1795 | find_min_mtu(struct ofproto *p) | |
1796 | { | |
1797 | struct ofport *ofport; | |
1798 | int mtu = 0; | |
1799 | ||
1800 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
1801 | struct netdev *netdev = ofport->netdev; | |
1802 | int dev_mtu; | |
1803 | ||
1804 | /* Skip any internal ports, since that's what we're trying to | |
1805 | * set. */ | |
1806 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
1807 | continue; | |
1808 | } | |
1809 | ||
1810 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
1811 | continue; | |
1812 | } | |
1813 | if (!mtu || dev_mtu < mtu) { | |
1814 | mtu = dev_mtu; | |
1815 | } | |
1816 | } | |
1817 | ||
1818 | return mtu ? mtu: ETH_PAYLOAD_MAX; | |
1819 | } | |
1820 | ||
ada3428f PS |
1821 | /* Update MTU of all datapath devices on 'p' to the minimum of the |
1822 | * non-datapath ports in event of 'port' added or changed. */ | |
9197df76 | 1823 | static void |
ada3428f | 1824 | update_mtu(struct ofproto *p, struct ofport *port) |
9197df76 JP |
1825 | { |
1826 | struct ofport *ofport; | |
ada3428f PS |
1827 | struct netdev *netdev = port->netdev; |
1828 | int dev_mtu, old_min; | |
1829 | ||
1830 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
1831 | port->mtu = 0; | |
1832 | return; | |
1833 | } | |
1834 | if (!strcmp(netdev_get_type(port->netdev), "internal")) { | |
1835 | if (dev_mtu > p->min_mtu) { | |
1836 | if (!netdev_set_mtu(port->netdev, p->min_mtu)) { | |
1837 | dev_mtu = p->min_mtu; | |
1838 | } | |
1839 | } | |
1840 | port->mtu = dev_mtu; | |
1841 | return; | |
1842 | } | |
1843 | ||
1844 | /* For non-internal port find new min mtu. */ | |
1845 | old_min = p->min_mtu; | |
1846 | port->mtu = dev_mtu; | |
1847 | p->min_mtu = find_min_mtu(p); | |
1848 | if (p->min_mtu == old_min) { | |
1849 | return; | |
1850 | } | |
9197df76 JP |
1851 | |
1852 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
1853 | struct netdev *netdev = ofport->netdev; | |
1854 | ||
1855 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
ada3428f PS |
1856 | if (!netdev_set_mtu(netdev, p->min_mtu)) { |
1857 | ofport->mtu = p->min_mtu; | |
1858 | } | |
9197df76 JP |
1859 | } |
1860 | } | |
1861 | } | |
064af421 | 1862 | \f |
064af421 | 1863 | static void |
abe529af | 1864 | ofproto_rule_destroy__(struct rule *rule) |
064af421 | 1865 | { |
1eae3d33 | 1866 | if (rule) { |
f25d0cf3 | 1867 | free(rule->ofpacts); |
1eae3d33 BP |
1868 | rule->ofproto->ofproto_class->rule_dealloc(rule); |
1869 | } | |
064af421 BP |
1870 | } |
1871 | ||
7ee20df1 BP |
1872 | /* This function allows an ofproto implementation to destroy any rules that |
1873 | * remain when its ->destruct() function is called. The caller must have | |
1874 | * already uninitialized any derived members of 'rule' (step 5 described in the | |
5bee6e26 JP |
1875 | * large comment in ofproto/ofproto-provider.h titled "Life Cycle"). |
1876 | * This function implements steps 6 and 7. | |
7ee20df1 BP |
1877 | * |
1878 | * This function should only be called from an ofproto implementation's | |
1879 | * ->destruct() function. It is not suitable elsewhere. */ | |
abe529af BP |
1880 | void |
1881 | ofproto_rule_destroy(struct rule *rule) | |
064af421 | 1882 | { |
7ee20df1 | 1883 | assert(!rule->pending); |
d0918789 | 1884 | oftable_remove_rule(rule); |
7ee20df1 | 1885 | ofproto_rule_destroy__(rule); |
064af421 BP |
1886 | } |
1887 | ||
bcf84111 | 1888 | /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action |
f25d0cf3 | 1889 | * that outputs to 'port' (output to OFPP_FLOOD and OFPP_ALL doesn't count). */ |
064af421 | 1890 | static bool |
f25d0cf3 | 1891 | rule_has_out_port(const struct rule *rule, uint16_t port) |
064af421 | 1892 | { |
f25d0cf3 BP |
1893 | return (port == OFPP_NONE |
1894 | || ofpacts_output_to_port(rule->ofpacts, rule->ofpacts_len, port)); | |
064af421 BP |
1895 | } |
1896 | ||
bcf84111 | 1897 | /* Executes the actions indicated by 'rule' on 'packet' and credits 'rule''s |
bcf84111 BP |
1898 | * statistics appropriately. 'packet' must have at least sizeof(struct |
1899 | * ofp_packet_in) bytes of headroom. | |
064af421 | 1900 | * |
bcf84111 BP |
1901 | * 'packet' doesn't necessarily have to match 'rule'. 'rule' will be credited |
1902 | * with statistics for 'packet' either way. | |
1903 | * | |
1904 | * Takes ownership of 'packet'. */ | |
5bf0e941 | 1905 | static int |
abe529af | 1906 | rule_execute(struct rule *rule, uint16_t in_port, struct ofpbuf *packet) |
eedc0097 | 1907 | { |
bcf84111 | 1908 | struct flow flow; |
eedc0097 | 1909 | |
abe529af | 1910 | assert(ofpbuf_headroom(packet) >= sizeof(struct ofp_packet_in)); |
eedc0097 | 1911 | |
abff858b | 1912 | flow_extract(packet, 0, 0, in_port, &flow); |
5bf0e941 | 1913 | return rule->ofproto->ofproto_class->rule_execute(rule, &flow, packet); |
350a665f BP |
1914 | } |
1915 | ||
abe529af BP |
1916 | /* Returns true if 'rule' should be hidden from the controller. |
1917 | * | |
1918 | * Rules with priority higher than UINT16_MAX are set up by ofproto itself | |
1919 | * (e.g. by in-band control) and are intentionally hidden from the | |
1920 | * controller. */ | |
1921 | static bool | |
1922 | rule_is_hidden(const struct rule *rule) | |
b6c9e612 | 1923 | { |
abe529af | 1924 | return rule->cr.priority > UINT16_MAX; |
7b064a79 | 1925 | } |
5c67e4af BP |
1926 | |
1927 | static enum oftable_flags | |
1928 | rule_get_flags(const struct rule *rule) | |
1929 | { | |
1930 | return rule->ofproto->tables[rule->table_id].flags; | |
1931 | } | |
1932 | ||
1933 | static bool | |
1934 | rule_is_modifiable(const struct rule *rule) | |
1935 | { | |
1936 | return !(rule_get_flags(rule) & OFTABLE_READONLY); | |
1937 | } | |
fa066f01 | 1938 | \f |
90bf1e07 | 1939 | static enum ofperr |
d1e2cf21 | 1940 | handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 1941 | { |
b0421aa2 | 1942 | ofconn_send_reply(ofconn, make_echo_reply(oh)); |
064af421 | 1943 | return 0; |
064af421 BP |
1944 | } |
1945 | ||
90bf1e07 | 1946 | static enum ofperr |
d1e2cf21 | 1947 | handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 1948 | { |
64ff1d96 | 1949 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
9e1fd49b | 1950 | struct ofputil_switch_features features; |
064af421 | 1951 | struct ofport *port; |
6c1491fb | 1952 | bool arp_match_ip; |
9e1fd49b | 1953 | struct ofpbuf *b; |
064af421 | 1954 | |
9e1fd49b BP |
1955 | ofproto->ofproto_class->get_features(ofproto, &arp_match_ip, |
1956 | &features.actions); | |
1957 | assert(features.actions & OFPUTIL_A_OUTPUT); /* sanity check */ | |
064af421 | 1958 | |
9e1fd49b BP |
1959 | features.datapath_id = ofproto->datapath_id; |
1960 | features.n_buffers = pktbuf_capacity(); | |
1961 | features.n_tables = ofproto->n_tables; | |
1962 | features.capabilities = (OFPUTIL_C_FLOW_STATS | OFPUTIL_C_TABLE_STATS | | |
1963 | OFPUTIL_C_PORT_STATS | OFPUTIL_C_QUEUE_STATS); | |
6c1491fb | 1964 | if (arp_match_ip) { |
9e1fd49b | 1965 | features.capabilities |= OFPUTIL_C_ARP_MATCH_IP; |
6c1491fb | 1966 | } |
064af421 | 1967 | |
9e1fd49b BP |
1968 | b = ofputil_encode_switch_features(&features, ofconn_get_protocol(ofconn), |
1969 | oh->xid); | |
64ff1d96 | 1970 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
9e1fd49b | 1971 | ofputil_put_switch_features_port(&port->pp, b); |
064af421 | 1972 | } |
064af421 | 1973 | |
9e1fd49b | 1974 | ofconn_send_reply(ofconn, b); |
064af421 BP |
1975 | return 0; |
1976 | } | |
064af421 | 1977 | |
90bf1e07 | 1978 | static enum ofperr |
d1e2cf21 | 1979 | handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 1980 | { |
64ff1d96 | 1981 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 | 1982 | struct ofp_switch_config *osc; |
f0fd1a17 | 1983 | enum ofp_config_flags flags; |
7257b535 | 1984 | struct ofpbuf *buf; |
959a2ecd | 1985 | |
064af421 BP |
1986 | /* Send reply. */ |
1987 | osc = make_openflow_xid(sizeof *osc, OFPT_GET_CONFIG_REPLY, oh->xid, &buf); | |
f0fd1a17 PS |
1988 | flags = ofproto->frag_handling; |
1989 | if (ofconn_get_invalid_ttl_to_controller(ofconn)) { | |
1990 | flags |= OFPC_INVALID_TTL_TO_CONTROLLER; | |
1991 | } | |
1992 | osc->flags = htons(flags); | |
810605a2 | 1993 | osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn)); |
b0421aa2 | 1994 | ofconn_send_reply(ofconn, buf); |
2d70a31a | 1995 | |
064af421 BP |
1996 | return 0; |
1997 | } | |
064af421 | 1998 | |
90bf1e07 | 1999 | static enum ofperr |
d1e2cf21 | 2000 | handle_set_config(struct ofconn *ofconn, const struct ofp_switch_config *osc) |
064af421 | 2001 | { |
64ff1d96 | 2002 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
d1e2cf21 | 2003 | uint16_t flags = ntohs(osc->flags); |
2d70a31a | 2004 | |
7257b535 BP |
2005 | if (ofconn_get_type(ofconn) != OFCONN_PRIMARY |
2006 | || ofconn_get_role(ofconn) != NX_ROLE_SLAVE) { | |
2007 | enum ofp_config_flags cur = ofproto->frag_handling; | |
2008 | enum ofp_config_flags next = flags & OFPC_FRAG_MASK; | |
2009 | ||
2010 | assert((cur & OFPC_FRAG_MASK) == cur); | |
2011 | if (cur != next) { | |
2012 | if (ofproto->ofproto_class->set_frag_handling(ofproto, next)) { | |
2013 | ofproto->frag_handling = next; | |
2014 | } else { | |
2015 | VLOG_WARN_RL(&rl, "%s: unsupported fragment handling mode %s", | |
2016 | ofproto->name, | |
2017 | ofputil_frag_handling_to_string(next)); | |
2018 | } | |
064af421 BP |
2019 | } |
2020 | } | |
f0fd1a17 | 2021 | ofconn_set_invalid_ttl_to_controller(ofconn, |
05fe1764 | 2022 | (flags & OFPC_INVALID_TTL_TO_CONTROLLER)); |
ebe482fd | 2023 | |
810605a2 | 2024 | ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len)); |
0ad9b732 | 2025 | |
064af421 | 2026 | return 0; |
064af421 BP |
2027 | } |
2028 | ||
9deba63b | 2029 | /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow |
90bf1e07 BP |
2030 | * error message code for the caller to propagate upward. Otherwise, returns |
2031 | * 0. | |
2032 | * | |
2033 | * The log message mentions 'msg_type'. */ | |
2034 | static enum ofperr | |
2035 | reject_slave_controller(struct ofconn *ofconn) | |
9deba63b | 2036 | { |
1ce0a5fa BP |
2037 | if (ofconn_get_type(ofconn) == OFCONN_PRIMARY |
2038 | && ofconn_get_role(ofconn) == NX_ROLE_SLAVE) { | |
90bf1e07 | 2039 | return OFPERR_OFPBRC_EPERM; |
9deba63b BP |
2040 | } else { |
2041 | return 0; | |
2042 | } | |
2043 | } | |
2044 | ||
90bf1e07 | 2045 | static enum ofperr |
c6a93eb7 | 2046 | handle_packet_out(struct ofconn *ofconn, const struct ofp_packet_out *opo) |
064af421 | 2047 | { |
64ff1d96 | 2048 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
c6a93eb7 BP |
2049 | struct ofputil_packet_out po; |
2050 | struct ofpbuf *payload; | |
f25d0cf3 BP |
2051 | uint64_t ofpacts_stub[1024 / 8]; |
2052 | struct ofpbuf ofpacts; | |
ae412e7d | 2053 | struct flow flow; |
90bf1e07 | 2054 | enum ofperr error; |
064af421 | 2055 | |
ac51afaf BP |
2056 | COVERAGE_INC(ofproto_packet_out); |
2057 | ||
76589937 | 2058 | error = reject_slave_controller(ofconn); |
9deba63b | 2059 | if (error) { |
f25d0cf3 | 2060 | goto exit; |
9deba63b BP |
2061 | } |
2062 | ||
c6a93eb7 | 2063 | /* Decode message. */ |
f25d0cf3 BP |
2064 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
2065 | error = ofputil_decode_packet_out(&po, opo, &ofpacts); | |
064af421 | 2066 | if (error) { |
f25d0cf3 | 2067 | goto exit_free_ofpacts; |
064af421 | 2068 | } |
064af421 | 2069 | |
ac51afaf | 2070 | /* Get payload. */ |
c6a93eb7 BP |
2071 | if (po.buffer_id != UINT32_MAX) { |
2072 | error = ofconn_pktbuf_retrieve(ofconn, po.buffer_id, &payload, NULL); | |
2073 | if (error || !payload) { | |
f25d0cf3 | 2074 | goto exit_free_ofpacts; |
064af421 | 2075 | } |
064af421 | 2076 | } else { |
c6a93eb7 BP |
2077 | payload = xmalloc(sizeof *payload); |
2078 | ofpbuf_use_const(payload, po.packet, po.packet_len); | |
e1154f71 BP |
2079 | } |
2080 | ||
abe529af | 2081 | /* Send out packet. */ |
c6a93eb7 BP |
2082 | flow_extract(payload, 0, 0, po.in_port, &flow); |
2083 | error = p->ofproto_class->packet_out(p, payload, &flow, | |
f25d0cf3 | 2084 | po.ofpacts, po.ofpacts_len); |
c6a93eb7 | 2085 | ofpbuf_delete(payload); |
abe529af | 2086 | |
f25d0cf3 BP |
2087 | exit_free_ofpacts: |
2088 | ofpbuf_uninit(&ofpacts); | |
2089 | exit: | |
abe529af | 2090 | return error; |
064af421 BP |
2091 | } |
2092 | ||
2093 | static void | |
9e1fd49b BP |
2094 | update_port_config(struct ofport *port, |
2095 | enum ofputil_port_config config, | |
2096 | enum ofputil_port_config mask) | |
064af421 | 2097 | { |
9e1fd49b BP |
2098 | enum ofputil_port_config old_config = port->pp.config; |
2099 | enum ofputil_port_config toggle; | |
abe529af | 2100 | |
9e1fd49b BP |
2101 | toggle = (config ^ port->pp.config) & mask; |
2102 | if (toggle & OFPUTIL_PC_PORT_DOWN) { | |
2103 | if (config & OFPUTIL_PC_PORT_DOWN) { | |
064af421 BP |
2104 | netdev_turn_flags_off(port->netdev, NETDEV_UP, true); |
2105 | } else { | |
2106 | netdev_turn_flags_on(port->netdev, NETDEV_UP, true); | |
2107 | } | |
9e1fd49b | 2108 | toggle &= ~OFPUTIL_PC_PORT_DOWN; |
064af421 | 2109 | } |
abe529af | 2110 | |
9e1fd49b BP |
2111 | port->pp.config ^= toggle; |
2112 | if (port->pp.config != old_config) { | |
abe529af | 2113 | port->ofproto->ofproto_class->port_reconfigured(port, old_config); |
064af421 BP |
2114 | } |
2115 | } | |
2116 | ||
90bf1e07 | 2117 | static enum ofperr |
d1e2cf21 | 2118 | handle_port_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2119 | { |
64ff1d96 | 2120 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
9e1fd49b | 2121 | struct ofputil_port_mod pm; |
064af421 | 2122 | struct ofport *port; |
9e1fd49b | 2123 | enum ofperr error; |
064af421 | 2124 | |
76589937 | 2125 | error = reject_slave_controller(ofconn); |
9deba63b BP |
2126 | if (error) { |
2127 | return error; | |
2128 | } | |
064af421 | 2129 | |
9e1fd49b BP |
2130 | error = ofputil_decode_port_mod(oh, &pm); |
2131 | if (error) { | |
2132 | return error; | |
2133 | } | |
2134 | ||
2135 | port = ofproto_get_port(p, pm.port_no); | |
064af421 | 2136 | if (!port) { |
90bf1e07 | 2137 | return OFPERR_OFPPMFC_BAD_PORT; |
9e1fd49b | 2138 | } else if (!eth_addr_equals(port->pp.hw_addr, pm.hw_addr)) { |
90bf1e07 | 2139 | return OFPERR_OFPPMFC_BAD_HW_ADDR; |
064af421 | 2140 | } else { |
9e1fd49b BP |
2141 | update_port_config(port, pm.config, pm.mask); |
2142 | if (pm.advertise) { | |
2143 | netdev_set_advertisements(port->netdev, pm.advertise); | |
064af421 BP |
2144 | } |
2145 | } | |
2146 | return 0; | |
2147 | } | |
2148 | ||
90bf1e07 | 2149 | static enum ofperr |
3269c562 | 2150 | handle_desc_stats_request(struct ofconn *ofconn, |
63f2140a | 2151 | const struct ofp_stats_msg *request) |
064af421 | 2152 | { |
64ff1d96 | 2153 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 BP |
2154 | struct ofp_desc_stats *ods; |
2155 | struct ofpbuf *msg; | |
2156 | ||
63f2140a | 2157 | ods = ofputil_make_stats_reply(sizeof *ods, request, &msg); |
5a719c38 JP |
2158 | ovs_strlcpy(ods->mfr_desc, p->mfr_desc, sizeof ods->mfr_desc); |
2159 | ovs_strlcpy(ods->hw_desc, p->hw_desc, sizeof ods->hw_desc); | |
2160 | ovs_strlcpy(ods->sw_desc, p->sw_desc, sizeof ods->sw_desc); | |
2161 | ovs_strlcpy(ods->serial_num, p->serial_desc, sizeof ods->serial_num); | |
2162 | ovs_strlcpy(ods->dp_desc, p->dp_desc, sizeof ods->dp_desc); | |
b0421aa2 | 2163 | ofconn_send_reply(ofconn, msg); |
064af421 BP |
2164 | |
2165 | return 0; | |
2166 | } | |
2167 | ||
90bf1e07 | 2168 | static enum ofperr |
3269c562 | 2169 | handle_table_stats_request(struct ofconn *ofconn, |
63f2140a | 2170 | const struct ofp_stats_msg *request) |
064af421 | 2171 | { |
64ff1d96 | 2172 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 BP |
2173 | struct ofp_table_stats *ots; |
2174 | struct ofpbuf *msg; | |
6c1491fb | 2175 | size_t i; |
064af421 | 2176 | |
63f2140a | 2177 | ofputil_make_stats_reply(sizeof(struct ofp_stats_msg), request, &msg); |
064af421 | 2178 | |
6c1491fb BP |
2179 | ots = ofpbuf_put_zeros(msg, sizeof *ots * p->n_tables); |
2180 | for (i = 0; i < p->n_tables; i++) { | |
2181 | ots[i].table_id = i; | |
35aa7a21 | 2182 | sprintf(ots[i].name, "table%zu", i); |
eec25dc1 | 2183 | ots[i].wildcards = htonl(OFPFW10_ALL); |
6c1491fb | 2184 | ots[i].max_entries = htonl(1000000); /* An arbitrary big number. */ |
d0918789 | 2185 | ots[i].active_count = htonl(classifier_count(&p->tables[i].cls)); |
6c1491fb | 2186 | } |
064af421 | 2187 | |
6c1491fb | 2188 | p->ofproto_class->get_tables(p, ots); |
064af421 | 2189 | |
254750ce BP |
2190 | for (i = 0; i < p->n_tables; i++) { |
2191 | const struct oftable *table = &p->tables[i]; | |
2192 | ||
2193 | if (table->name) { | |
2194 | ovs_strzcpy(ots[i].name, table->name, sizeof ots[i].name); | |
2195 | } | |
2196 | ||
2197 | if (table->max_flows < ntohl(ots[i].max_entries)) { | |
2198 | ots[i].max_entries = htonl(table->max_flows); | |
2199 | } | |
2200 | } | |
2201 | ||
b0421aa2 | 2202 | ofconn_send_reply(ofconn, msg); |
064af421 BP |
2203 | return 0; |
2204 | } | |
2205 | ||
abaad8cf | 2206 | static void |
63f2140a | 2207 | append_port_stat(struct ofport *port, struct list *replies) |
abaad8cf JP |
2208 | { |
2209 | struct netdev_stats stats; | |
2210 | struct ofp_port_stats *ops; | |
2211 | ||
d295e8e9 JP |
2212 | /* Intentionally ignore return value, since errors will set |
2213 | * 'stats' to all-1s, which is correct for OpenFlow, and | |
abaad8cf | 2214 | * netdev_get_stats() will log errors. */ |
6527c598 | 2215 | ofproto_port_get_stats(port, &stats); |
abaad8cf | 2216 | |
63f2140a | 2217 | ops = ofputil_append_stats_reply(sizeof *ops, replies); |
9e1fd49b | 2218 | ops->port_no = htons(port->pp.port_no); |
abaad8cf | 2219 | memset(ops->pad, 0, sizeof ops->pad); |
c4617b3c BP |
2220 | put_32aligned_be64(&ops->rx_packets, htonll(stats.rx_packets)); |
2221 | put_32aligned_be64(&ops->tx_packets, htonll(stats.tx_packets)); | |
2222 | put_32aligned_be64(&ops->rx_bytes, htonll(stats.rx_bytes)); | |
2223 | put_32aligned_be64(&ops->tx_bytes, htonll(stats.tx_bytes)); | |
2224 | put_32aligned_be64(&ops->rx_dropped, htonll(stats.rx_dropped)); | |
2225 | put_32aligned_be64(&ops->tx_dropped, htonll(stats.tx_dropped)); | |
2226 | put_32aligned_be64(&ops->rx_errors, htonll(stats.rx_errors)); | |
2227 | put_32aligned_be64(&ops->tx_errors, htonll(stats.tx_errors)); | |
2228 | put_32aligned_be64(&ops->rx_frame_err, htonll(stats.rx_frame_errors)); | |
2229 | put_32aligned_be64(&ops->rx_over_err, htonll(stats.rx_over_errors)); | |
2230 | put_32aligned_be64(&ops->rx_crc_err, htonll(stats.rx_crc_errors)); | |
2231 | put_32aligned_be64(&ops->collisions, htonll(stats.collisions)); | |
abaad8cf JP |
2232 | } |
2233 | ||
90bf1e07 | 2234 | static enum ofperr |
63f2140a BP |
2235 | handle_port_stats_request(struct ofconn *ofconn, |
2236 | const struct ofp_port_stats_request *psr) | |
064af421 | 2237 | { |
64ff1d96 | 2238 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 | 2239 | struct ofport *port; |
63f2140a | 2240 | struct list replies; |
064af421 | 2241 | |
63f2140a | 2242 | ofputil_start_stats_reply(&psr->osm, &replies); |
abaad8cf | 2243 | if (psr->port_no != htons(OFPP_NONE)) { |
abe529af | 2244 | port = ofproto_get_port(p, ntohs(psr->port_no)); |
abaad8cf | 2245 | if (port) { |
63f2140a | 2246 | append_port_stat(port, &replies); |
abaad8cf JP |
2247 | } |
2248 | } else { | |
4e8e4213 | 2249 | HMAP_FOR_EACH (port, hmap_node, &p->ports) { |
63f2140a | 2250 | append_port_stat(port, &replies); |
abaad8cf | 2251 | } |
064af421 BP |
2252 | } |
2253 | ||
63f2140a | 2254 | ofconn_send_replies(ofconn, &replies); |
064af421 BP |
2255 | return 0; |
2256 | } | |
2257 | ||
2be393ed JP |
2258 | static enum ofperr |
2259 | handle_port_desc_stats_request(struct ofconn *ofconn, | |
2260 | const struct ofp_stats_msg *osm) | |
2261 | { | |
2262 | struct ofproto *p = ofconn_get_ofproto(ofconn); | |
2263 | struct ofport *port; | |
2264 | struct list replies; | |
2265 | ||
2266 | ofputil_start_stats_reply(osm, &replies); | |
2267 | ||
2268 | HMAP_FOR_EACH (port, hmap_node, &p->ports) { | |
2269 | ofputil_append_port_desc_stats_reply(ofconn_get_protocol(ofconn), | |
2270 | &port->pp, &replies); | |
2271 | } | |
2272 | ||
2273 | ofconn_send_replies(ofconn, &replies); | |
2274 | return 0; | |
2275 | } | |
2276 | ||
c6ebb8fb | 2277 | static void |
f27f2134 BP |
2278 | calc_flow_duration__(long long int start, long long int now, |
2279 | uint32_t *sec, uint32_t *nsec) | |
c6ebb8fb | 2280 | { |
f27f2134 | 2281 | long long int msecs = now - start; |
588cd7b5 BP |
2282 | *sec = msecs / 1000; |
2283 | *nsec = (msecs % 1000) * (1000 * 1000); | |
2284 | } | |
2285 | ||
48266274 BP |
2286 | /* Checks whether 'table_id' is 0xff or a valid table ID in 'ofproto'. Returns |
2287 | * 0 if 'table_id' is OK, otherwise an OpenFlow error code. */ | |
90bf1e07 | 2288 | static enum ofperr |
48266274 BP |
2289 | check_table_id(const struct ofproto *ofproto, uint8_t table_id) |
2290 | { | |
2291 | return (table_id == 0xff || table_id < ofproto->n_tables | |
2292 | ? 0 | |
90bf1e07 | 2293 | : OFPERR_NXBRC_BAD_TABLE_ID); |
48266274 BP |
2294 | |
2295 | } | |
2296 | ||
5c67e4af BP |
2297 | static struct oftable * |
2298 | next_visible_table(struct ofproto *ofproto, uint8_t table_id) | |
2299 | { | |
2300 | struct oftable *table; | |
2301 | ||
2302 | for (table = &ofproto->tables[table_id]; | |
2303 | table < &ofproto->tables[ofproto->n_tables]; | |
2304 | table++) { | |
2305 | if (!(table->flags & OFTABLE_HIDDEN)) { | |
2306 | return table; | |
2307 | } | |
2308 | } | |
2309 | ||
2310 | return NULL; | |
2311 | } | |
2312 | ||
d0918789 | 2313 | static struct oftable * |
6c1491fb | 2314 | first_matching_table(struct ofproto *ofproto, uint8_t table_id) |
064af421 | 2315 | { |
6c1491fb | 2316 | if (table_id == 0xff) { |
5c67e4af | 2317 | return next_visible_table(ofproto, 0); |
6c1491fb BP |
2318 | } else if (table_id < ofproto->n_tables) { |
2319 | return &ofproto->tables[table_id]; | |
a02e5331 | 2320 | } else { |
6c1491fb | 2321 | return NULL; |
a02e5331 | 2322 | } |
064af421 BP |
2323 | } |
2324 | ||
d0918789 | 2325 | static struct oftable * |
6c1491fb | 2326 | next_matching_table(struct ofproto *ofproto, |
d0918789 | 2327 | struct oftable *table, uint8_t table_id) |
6c1491fb | 2328 | { |
5c67e4af BP |
2329 | return (table_id == 0xff |
2330 | ? next_visible_table(ofproto, (table - ofproto->tables) + 1) | |
6c1491fb BP |
2331 | : NULL); |
2332 | } | |
2333 | ||
d0918789 | 2334 | /* Assigns TABLE to each oftable, in turn, that matches TABLE_ID in OFPROTO: |
6c1491fb BP |
2335 | * |
2336 | * - If TABLE_ID is 0xff, this iterates over every classifier table in | |
5c67e4af | 2337 | * OFPROTO, skipping tables marked OFTABLE_HIDDEN. |
6c1491fb BP |
2338 | * |
2339 | * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates | |
5c67e4af BP |
2340 | * only once, for that table. (This can be used to access tables marked |
2341 | * OFTABLE_HIDDEN.) | |
6c1491fb | 2342 | * |
48266274 BP |
2343 | * - Otherwise, TABLE_ID isn't valid for OFPROTO, so the loop won't be |
2344 | * entered at all. (Perhaps you should have validated TABLE_ID with | |
2345 | * check_table_id().) | |
6c1491fb BP |
2346 | * |
2347 | * All parameters are evaluated multiple times. | |
2348 | */ | |
d0918789 BP |
2349 | #define FOR_EACH_MATCHING_TABLE(TABLE, TABLE_ID, OFPROTO) \ |
2350 | for ((TABLE) = first_matching_table(OFPROTO, TABLE_ID); \ | |
2351 | (TABLE) != NULL; \ | |
2352 | (TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID)) | |
6c1491fb | 2353 | |
9ed18e46 BP |
2354 | /* Searches 'ofproto' for rules in table 'table_id' (or in all tables, if |
2355 | * 'table_id' is 0xff) that match 'match' in the "loose" way required for | |
2356 | * OpenFlow OFPFC_MODIFY and OFPFC_DELETE requests and puts them on list | |
2357 | * 'rules'. | |
2358 | * | |
2359 | * If 'out_port' is anything other than OFPP_NONE, then only rules that output | |
2360 | * to 'out_port' are included. | |
2361 | * | |
2362 | * Hidden rules are always omitted. | |
2363 | * | |
2364 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 2365 | static enum ofperr |
9ed18e46 | 2366 | collect_rules_loose(struct ofproto *ofproto, uint8_t table_id, |
e729e793 JP |
2367 | const struct cls_rule *match, |
2368 | ovs_be64 cookie, ovs_be64 cookie_mask, | |
2369 | uint16_t out_port, struct list *rules) | |
9ed18e46 | 2370 | { |
d0918789 | 2371 | struct oftable *table; |
90bf1e07 | 2372 | enum ofperr error; |
48266274 BP |
2373 | |
2374 | error = check_table_id(ofproto, table_id); | |
2375 | if (error) { | |
2376 | return error; | |
2377 | } | |
9ed18e46 BP |
2378 | |
2379 | list_init(rules); | |
d0918789 | 2380 | FOR_EACH_MATCHING_TABLE (table, table_id, ofproto) { |
9ed18e46 BP |
2381 | struct cls_cursor cursor; |
2382 | struct rule *rule; | |
2383 | ||
d0918789 | 2384 | cls_cursor_init(&cursor, &table->cls, match); |
9ed18e46 | 2385 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
7ee20df1 BP |
2386 | if (rule->pending) { |
2387 | return OFPROTO_POSTPONE; | |
2388 | } | |
e729e793 JP |
2389 | if (!rule_is_hidden(rule) && rule_has_out_port(rule, out_port) |
2390 | && !((rule->flow_cookie ^ cookie) & cookie_mask)) { | |
9ed18e46 BP |
2391 | list_push_back(rules, &rule->ofproto_node); |
2392 | } | |
2393 | } | |
2394 | } | |
2395 | return 0; | |
2396 | } | |
2397 | ||
2398 | /* Searches 'ofproto' for rules in table 'table_id' (or in all tables, if | |
2399 | * 'table_id' is 0xff) that match 'match' in the "strict" way required for | |
2400 | * OpenFlow OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests and puts them | |
2401 | * on list 'rules'. | |
2402 | * | |
2403 | * If 'out_port' is anything other than OFPP_NONE, then only rules that output | |
2404 | * to 'out_port' are included. | |
2405 | * | |
2406 | * Hidden rules are always omitted. | |
2407 | * | |
2408 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 2409 | static enum ofperr |
9ed18e46 | 2410 | collect_rules_strict(struct ofproto *ofproto, uint8_t table_id, |
e729e793 JP |
2411 | const struct cls_rule *match, |
2412 | ovs_be64 cookie, ovs_be64 cookie_mask, | |
2413 | uint16_t out_port, struct list *rules) | |
9ed18e46 | 2414 | { |
d0918789 | 2415 | struct oftable *table; |
48266274 BP |
2416 | int error; |
2417 | ||
2418 | error = check_table_id(ofproto, table_id); | |
2419 | if (error) { | |
2420 | return error; | |
2421 | } | |
9ed18e46 BP |
2422 | |
2423 | list_init(rules); | |
d0918789 | 2424 | FOR_EACH_MATCHING_TABLE (table, table_id, ofproto) { |
9ed18e46 BP |
2425 | struct rule *rule; |
2426 | ||
d0918789 BP |
2427 | rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls, |
2428 | match)); | |
9ed18e46 | 2429 | if (rule) { |
7ee20df1 BP |
2430 | if (rule->pending) { |
2431 | return OFPROTO_POSTPONE; | |
2432 | } | |
e729e793 JP |
2433 | if (!rule_is_hidden(rule) && rule_has_out_port(rule, out_port) |
2434 | && !((rule->flow_cookie ^ cookie) & cookie_mask)) { | |
9ed18e46 BP |
2435 | list_push_back(rules, &rule->ofproto_node); |
2436 | } | |
2437 | } | |
2438 | } | |
2439 | return 0; | |
2440 | } | |
2441 | ||
f27f2134 BP |
2442 | /* Returns 'age_ms' (a duration in milliseconds), converted to seconds and |
2443 | * forced into the range of a uint16_t. */ | |
2444 | static int | |
2445 | age_secs(long long int age_ms) | |
2446 | { | |
2447 | return (age_ms < 0 ? 0 | |
2448 | : age_ms >= UINT16_MAX * 1000 ? UINT16_MAX | |
2449 | : (unsigned int) age_ms / 1000); | |
2450 | } | |
2451 | ||
90bf1e07 | 2452 | static enum ofperr |
63f2140a | 2453 | handle_flow_stats_request(struct ofconn *ofconn, |
349adfb2 | 2454 | const struct ofp_stats_msg *osm) |
064af421 | 2455 | { |
64ff1d96 | 2456 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 2457 | struct ofputil_flow_stats_request fsr; |
63f2140a | 2458 | struct list replies; |
9ed18e46 BP |
2459 | struct list rules; |
2460 | struct rule *rule; | |
90bf1e07 | 2461 | enum ofperr error; |
09246b99 | 2462 | |
349adfb2 | 2463 | error = ofputil_decode_flow_stats_request(&fsr, &osm->header); |
09246b99 BP |
2464 | if (error) { |
2465 | return error; | |
2466 | } | |
2467 | ||
9ed18e46 | 2468 | error = collect_rules_loose(ofproto, fsr.table_id, &fsr.match, |
e729e793 | 2469 | fsr.cookie, fsr.cookie_mask, |
9ed18e46 BP |
2470 | fsr.out_port, &rules); |
2471 | if (error) { | |
2472 | return error; | |
2473 | } | |
5ecc9d81 | 2474 | |
9ed18e46 BP |
2475 | ofputil_start_stats_reply(osm, &replies); |
2476 | LIST_FOR_EACH (rule, ofproto_node, &rules) { | |
f27f2134 | 2477 | long long int now = time_msec(); |
9ed18e46 BP |
2478 | struct ofputil_flow_stats fs; |
2479 | ||
2480 | fs.rule = rule->cr; | |
2481 | fs.cookie = rule->flow_cookie; | |
2482 | fs.table_id = rule->table_id; | |
f27f2134 | 2483 | calc_flow_duration__(rule->created, now, &fs.duration_sec, |
9ed18e46 BP |
2484 | &fs.duration_nsec); |
2485 | fs.idle_timeout = rule->idle_timeout; | |
2486 | fs.hard_timeout = rule->hard_timeout; | |
f27f2134 BP |
2487 | fs.idle_age = age_secs(now - rule->used); |
2488 | fs.hard_age = age_secs(now - rule->modified); | |
9ed18e46 BP |
2489 | ofproto->ofproto_class->rule_get_stats(rule, &fs.packet_count, |
2490 | &fs.byte_count); | |
f25d0cf3 BP |
2491 | fs.ofpacts = rule->ofpacts; |
2492 | fs.ofpacts_len = rule->ofpacts_len; | |
9ed18e46 | 2493 | ofputil_append_flow_stats_reply(&fs, &replies); |
3c4486a5 | 2494 | } |
63f2140a | 2495 | ofconn_send_replies(ofconn, &replies); |
5ecc9d81 | 2496 | |
09246b99 BP |
2497 | return 0; |
2498 | } | |
2499 | ||
4f2cad2c | 2500 | static void |
3394b5b6 | 2501 | flow_stats_ds(struct rule *rule, struct ds *results) |
4f2cad2c | 2502 | { |
4f2cad2c | 2503 | uint64_t packet_count, byte_count; |
4f2cad2c | 2504 | |
abe529af BP |
2505 | rule->ofproto->ofproto_class->rule_get_stats(rule, |
2506 | &packet_count, &byte_count); | |
4f2cad2c | 2507 | |
6c1491fb BP |
2508 | if (rule->table_id != 0) { |
2509 | ds_put_format(results, "table_id=%"PRIu8", ", rule->table_id); | |
2510 | } | |
4f2cad2c JP |
2511 | ds_put_format(results, "duration=%llds, ", |
2512 | (time_msec() - rule->created) / 1000); | |
52ae00b3 | 2513 | ds_put_format(results, "priority=%u, ", rule->cr.priority); |
4f2cad2c JP |
2514 | ds_put_format(results, "n_packets=%"PRIu64", ", packet_count); |
2515 | ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count); | |
cb833cf6 | 2516 | cls_rule_format(&rule->cr, results); |
a5df0e72 | 2517 | ds_put_char(results, ','); |
f25d0cf3 BP |
2518 | if (rule->ofpacts_len > 0) { |
2519 | ofpacts_format(rule->ofpacts, rule->ofpacts_len, results); | |
3c8552c1 JP |
2520 | } else { |
2521 | ds_put_cstr(results, "drop"); | |
3dffcf07 | 2522 | } |
4f2cad2c JP |
2523 | ds_put_cstr(results, "\n"); |
2524 | } | |
2525 | ||
d295e8e9 | 2526 | /* Adds a pretty-printed description of all flows to 'results', including |
ee8b231c | 2527 | * hidden flows (e.g., set up by in-band control). */ |
4f2cad2c JP |
2528 | void |
2529 | ofproto_get_all_flows(struct ofproto *p, struct ds *results) | |
2530 | { | |
d0918789 | 2531 | struct oftable *table; |
6c1491fb | 2532 | |
d0918789 | 2533 | OFPROTO_FOR_EACH_TABLE (table, p) { |
6c1491fb BP |
2534 | struct cls_cursor cursor; |
2535 | struct rule *rule; | |
064af421 | 2536 | |
d0918789 | 2537 | cls_cursor_init(&cursor, &table->cls, NULL); |
6c1491fb BP |
2538 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
2539 | flow_stats_ds(rule, results); | |
2540 | } | |
064af421 | 2541 | } |
064af421 BP |
2542 | } |
2543 | ||
b5827b24 BP |
2544 | /* Obtains the NetFlow engine type and engine ID for 'ofproto' into |
2545 | * '*engine_type' and '*engine_id', respectively. */ | |
2546 | void | |
2547 | ofproto_get_netflow_ids(const struct ofproto *ofproto, | |
2548 | uint8_t *engine_type, uint8_t *engine_id) | |
2549 | { | |
abe529af | 2550 | ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id); |
b5827b24 BP |
2551 | } |
2552 | ||
b9380396 EJ |
2553 | /* Checks the fault status of CFM for 'ofp_port' within 'ofproto'. Returns a |
2554 | * bitmask of 'cfm_fault_reason's to indicate a CFM fault (generally | |
2555 | * indicating a connectivity problem). Returns zero if CFM is not faulted, | |
2556 | * and -1 if CFM is not enabled on 'port'. */ | |
a5610457 EJ |
2557 | int |
2558 | ofproto_port_get_cfm_fault(const struct ofproto *ofproto, uint16_t ofp_port) | |
2559 | { | |
2560 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
2561 | return (ofport && ofproto->ofproto_class->get_cfm_fault | |
2562 | ? ofproto->ofproto_class->get_cfm_fault(ofport) | |
2563 | : -1); | |
2564 | } | |
2565 | ||
1de11730 EJ |
2566 | /* Gets the MPIDs of the remote maintenance points broadcasting to 'ofp_port' |
2567 | * within 'ofproto'. Populates 'rmps' with an array of MPIDs owned by | |
2568 | * 'ofproto', and 'n_rmps' with the number of MPIDs in 'rmps'. Returns a | |
2569 | * number less than 0 if CFM is not enabled on 'ofp_port'. */ | |
2570 | int | |
2571 | ofproto_port_get_cfm_remote_mpids(const struct ofproto *ofproto, | |
2572 | uint16_t ofp_port, const uint64_t **rmps, | |
2573 | size_t *n_rmps) | |
2574 | { | |
2575 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
2576 | ||
2577 | *rmps = NULL; | |
2578 | *n_rmps = 0; | |
2579 | return (ofport && ofproto->ofproto_class->get_cfm_remote_mpids | |
2580 | ? ofproto->ofproto_class->get_cfm_remote_mpids(ofport, rmps, | |
2581 | n_rmps) | |
2582 | : -1); | |
2583 | } | |
2584 | ||
3967a833 MM |
2585 | /* Checks the health of the CFM for 'ofp_port' within 'ofproto'. Returns an |
2586 | * integer value between 0 and 100 to indicate the health of the port as a | |
2587 | * percentage which is the average of cfm health of all the remote_mpids or | |
2588 | * returns -1 if CFM is not enabled on 'ofport'. */ | |
2589 | int | |
2590 | ofproto_port_get_cfm_health(const struct ofproto *ofproto, uint16_t ofp_port) | |
2591 | { | |
2592 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
2593 | return (ofport && ofproto->ofproto_class->get_cfm_health | |
2594 | ? ofproto->ofproto_class->get_cfm_health(ofport) | |
2595 | : -1); | |
2596 | } | |
2597 | ||
90bf1e07 | 2598 | static enum ofperr |
76c93b22 BP |
2599 | handle_aggregate_stats_request(struct ofconn *ofconn, |
2600 | const struct ofp_stats_msg *osm) | |
27d34fce | 2601 | { |
76c93b22 | 2602 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 2603 | struct ofputil_flow_stats_request request; |
76c93b22 | 2604 | struct ofputil_aggregate_stats stats; |
5e9d0469 | 2605 | bool unknown_packets, unknown_bytes; |
76c93b22 | 2606 | struct ofpbuf *reply; |
9ed18e46 BP |
2607 | struct list rules; |
2608 | struct rule *rule; | |
90bf1e07 | 2609 | enum ofperr error; |
27d34fce | 2610 | |
76c93b22 BP |
2611 | error = ofputil_decode_flow_stats_request(&request, &osm->header); |
2612 | if (error) { | |
2613 | return error; | |
2614 | } | |
5ecc9d81 | 2615 | |
9ed18e46 | 2616 | error = collect_rules_loose(ofproto, request.table_id, &request.match, |
e729e793 | 2617 | request.cookie, request.cookie_mask, |
9ed18e46 BP |
2618 | request.out_port, &rules); |
2619 | if (error) { | |
2620 | return error; | |
2621 | } | |
3c4486a5 | 2622 | |
9ed18e46 | 2623 | memset(&stats, 0, sizeof stats); |
5e9d0469 | 2624 | unknown_packets = unknown_bytes = false; |
9ed18e46 BP |
2625 | LIST_FOR_EACH (rule, ofproto_node, &rules) { |
2626 | uint64_t packet_count; | |
2627 | uint64_t byte_count; | |
5ecc9d81 | 2628 | |
9ed18e46 BP |
2629 | ofproto->ofproto_class->rule_get_stats(rule, &packet_count, |
2630 | &byte_count); | |
5ecc9d81 | 2631 | |
5e9d0469 BP |
2632 | if (packet_count == UINT64_MAX) { |
2633 | unknown_packets = true; | |
2634 | } else { | |
2635 | stats.packet_count += packet_count; | |
2636 | } | |
2637 | ||
2638 | if (byte_count == UINT64_MAX) { | |
2639 | unknown_bytes = true; | |
2640 | } else { | |
2641 | stats.byte_count += byte_count; | |
2642 | } | |
2643 | ||
9ed18e46 | 2644 | stats.flow_count++; |
3c4486a5 | 2645 | } |
5e9d0469 BP |
2646 | if (unknown_packets) { |
2647 | stats.packet_count = UINT64_MAX; | |
2648 | } | |
2649 | if (unknown_bytes) { | |
2650 | stats.byte_count = UINT64_MAX; | |
2651 | } | |
27d34fce | 2652 | |
76c93b22 BP |
2653 | reply = ofputil_encode_aggregate_stats_reply(&stats, osm); |
2654 | ofconn_send_reply(ofconn, reply); | |
09246b99 BP |
2655 | |
2656 | return 0; | |
2657 | } | |
2658 | ||
c1c9c9c4 | 2659 | struct queue_stats_cbdata { |
ca0f572c | 2660 | struct ofport *ofport; |
63f2140a | 2661 | struct list replies; |
c1c9c9c4 BP |
2662 | }; |
2663 | ||
2664 | static void | |
db9220c3 | 2665 | put_queue_stats(struct queue_stats_cbdata *cbdata, uint32_t queue_id, |
c1c9c9c4 BP |
2666 | const struct netdev_queue_stats *stats) |
2667 | { | |
2668 | struct ofp_queue_stats *reply; | |
2669 | ||
63f2140a | 2670 | reply = ofputil_append_stats_reply(sizeof *reply, &cbdata->replies); |
9e1fd49b | 2671 | reply->port_no = htons(cbdata->ofport->pp.port_no); |
c1c9c9c4 BP |
2672 | memset(reply->pad, 0, sizeof reply->pad); |
2673 | reply->queue_id = htonl(queue_id); | |
c4617b3c BP |
2674 | put_32aligned_be64(&reply->tx_bytes, htonll(stats->tx_bytes)); |
2675 | put_32aligned_be64(&reply->tx_packets, htonll(stats->tx_packets)); | |
2676 | put_32aligned_be64(&reply->tx_errors, htonll(stats->tx_errors)); | |
c1c9c9c4 BP |
2677 | } |
2678 | ||
2679 | static void | |
db9220c3 | 2680 | handle_queue_stats_dump_cb(uint32_t queue_id, |
c1c9c9c4 BP |
2681 | struct netdev_queue_stats *stats, |
2682 | void *cbdata_) | |
2683 | { | |
2684 | struct queue_stats_cbdata *cbdata = cbdata_; | |
2685 | ||
2686 | put_queue_stats(cbdata, queue_id, stats); | |
2687 | } | |
2688 | ||
0414d158 | 2689 | static enum ofperr |
ca0f572c | 2690 | handle_queue_stats_for_port(struct ofport *port, uint32_t queue_id, |
c1c9c9c4 BP |
2691 | struct queue_stats_cbdata *cbdata) |
2692 | { | |
ca0f572c | 2693 | cbdata->ofport = port; |
c1c9c9c4 BP |
2694 | if (queue_id == OFPQ_ALL) { |
2695 | netdev_dump_queue_stats(port->netdev, | |
2696 | handle_queue_stats_dump_cb, cbdata); | |
2697 | } else { | |
2698 | struct netdev_queue_stats stats; | |
2699 | ||
1ac788f6 BP |
2700 | if (!netdev_get_queue_stats(port->netdev, queue_id, &stats)) { |
2701 | put_queue_stats(cbdata, queue_id, &stats); | |
0414d158 BP |
2702 | } else { |
2703 | return OFPERR_OFPQOFC_BAD_QUEUE; | |
1ac788f6 | 2704 | } |
c1c9c9c4 | 2705 | } |
0414d158 | 2706 | return 0; |
c1c9c9c4 BP |
2707 | } |
2708 | ||
90bf1e07 | 2709 | static enum ofperr |
63f2140a BP |
2710 | handle_queue_stats_request(struct ofconn *ofconn, |
2711 | const struct ofp_queue_stats_request *qsr) | |
c1c9c9c4 | 2712 | { |
64ff1d96 | 2713 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
c1c9c9c4 | 2714 | struct queue_stats_cbdata cbdata; |
c1c9c9c4 | 2715 | unsigned int port_no; |
0414d158 | 2716 | struct ofport *port; |
c1c9c9c4 | 2717 | uint32_t queue_id; |
0414d158 | 2718 | enum ofperr error; |
c1c9c9c4 | 2719 | |
c1c9c9c4 BP |
2720 | COVERAGE_INC(ofproto_queue_req); |
2721 | ||
63f2140a | 2722 | ofputil_start_stats_reply(&qsr->osm, &cbdata.replies); |
c1c9c9c4 BP |
2723 | |
2724 | port_no = ntohs(qsr->port_no); | |
2725 | queue_id = ntohl(qsr->queue_id); | |
2726 | if (port_no == OFPP_ALL) { | |
0414d158 | 2727 | error = OFPERR_OFPQOFC_BAD_QUEUE; |
4e8e4213 | 2728 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
0414d158 BP |
2729 | if (!handle_queue_stats_for_port(port, queue_id, &cbdata)) { |
2730 | error = 0; | |
2731 | } | |
c1c9c9c4 | 2732 | } |
0414d158 | 2733 | } else { |
abe529af | 2734 | port = ofproto_get_port(ofproto, port_no); |
0414d158 BP |
2735 | error = (port |
2736 | ? handle_queue_stats_for_port(port, queue_id, &cbdata) | |
2737 | : OFPERR_OFPQOFC_BAD_PORT); | |
2738 | } | |
2739 | if (!error) { | |
2740 | ofconn_send_replies(ofconn, &cbdata.replies); | |
c1c9c9c4 | 2741 | } else { |
63f2140a | 2742 | ofpbuf_list_delete(&cbdata.replies); |
c1c9c9c4 | 2743 | } |
c1c9c9c4 | 2744 | |
0414d158 | 2745 | return error; |
c1c9c9c4 | 2746 | } |
7ee20df1 BP |
2747 | |
2748 | static bool | |
2749 | is_flow_deletion_pending(const struct ofproto *ofproto, | |
2750 | const struct cls_rule *cls_rule, | |
2751 | uint8_t table_id) | |
2752 | { | |
2753 | if (!hmap_is_empty(&ofproto->deletions)) { | |
2754 | struct ofoperation *op; | |
2755 | ||
2756 | HMAP_FOR_EACH_WITH_HASH (op, hmap_node, | |
2757 | cls_rule_hash(cls_rule, table_id), | |
2758 | &ofproto->deletions) { | |
2759 | if (cls_rule_equal(cls_rule, &op->rule->cr)) { | |
2760 | return true; | |
2761 | } | |
2762 | } | |
2763 | } | |
2764 | ||
2765 | return false; | |
2766 | } | |
2767 | ||
79eee1eb BP |
2768 | /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT |
2769 | * in which no matching flow already exists in the flow table. | |
2770 | * | |
2771 | * Adds the flow specified by 'ofm', which is followed by 'n_actions' | |
75a75043 | 2772 | * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow |
90bf1e07 BP |
2773 | * error code on failure, or OFPROTO_POSTPONE if the operation cannot be |
2774 | * initiated now but may be retried later. | |
79eee1eb | 2775 | * |
f25d0cf3 BP |
2776 | * Upon successful return, takes ownership of 'fm->ofpacts'. On failure, |
2777 | * ownership remains with the caller. | |
2778 | * | |
79eee1eb BP |
2779 | * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id, |
2780 | * if any. */ | |
90bf1e07 | 2781 | static enum ofperr |
a9a2da38 | 2782 | add_flow(struct ofproto *ofproto, struct ofconn *ofconn, |
1b9d6420 | 2783 | const struct ofputil_flow_mod *fm, const struct ofp_header *request) |
064af421 | 2784 | { |
d0918789 | 2785 | struct oftable *table; |
7ee20df1 BP |
2786 | struct ofopgroup *group; |
2787 | struct rule *victim; | |
064af421 | 2788 | struct rule *rule; |
064af421 BP |
2789 | int error; |
2790 | ||
48266274 BP |
2791 | error = check_table_id(ofproto, fm->table_id); |
2792 | if (error) { | |
2793 | return error; | |
2794 | } | |
2795 | ||
7ee20df1 BP |
2796 | /* Pick table. */ |
2797 | if (fm->table_id == 0xff) { | |
2798 | uint8_t table_id; | |
13521ff5 | 2799 | if (ofproto->ofproto_class->rule_choose_table) { |
7ee20df1 BP |
2800 | error = ofproto->ofproto_class->rule_choose_table(ofproto, &fm->cr, |
2801 | &table_id); | |
2802 | if (error) { | |
2803 | return error; | |
2804 | } | |
2805 | assert(table_id < ofproto->n_tables); | |
2806 | table = &ofproto->tables[table_id]; | |
2807 | } else { | |
2808 | table = &ofproto->tables[0]; | |
2809 | } | |
2810 | } else if (fm->table_id < ofproto->n_tables) { | |
2811 | table = &ofproto->tables[fm->table_id]; | |
2812 | } else { | |
90bf1e07 | 2813 | return OFPERR_NXFMFC_BAD_TABLE_ID; |
064af421 BP |
2814 | } |
2815 | ||
5c67e4af BP |
2816 | if (table->flags & OFTABLE_READONLY) { |
2817 | return OFPERR_OFPBRC_EPERM; | |
2818 | } | |
2819 | ||
63adcc7d BP |
2820 | /* Check for overlap, if requested. */ |
2821 | if (fm->flags & OFPFF_CHECK_OVERLAP | |
d0918789 | 2822 | && classifier_rule_overlaps(&table->cls, &fm->cr)) { |
90bf1e07 | 2823 | return OFPERR_OFPFMFC_OVERLAP; |
63adcc7d BP |
2824 | } |
2825 | ||
7ee20df1 BP |
2826 | /* Serialize against pending deletion. */ |
2827 | if (is_flow_deletion_pending(ofproto, &fm->cr, table - ofproto->tables)) { | |
2828 | return OFPROTO_POSTPONE; | |
afe75089 | 2829 | } |
064af421 | 2830 | |
7ee20df1 BP |
2831 | /* Allocate new rule. */ |
2832 | rule = ofproto->ofproto_class->rule_alloc(); | |
2833 | if (!rule) { | |
2834 | VLOG_WARN_RL(&rl, "%s: failed to create rule (%s)", | |
2835 | ofproto->name, strerror(error)); | |
2836 | return ENOMEM; | |
2837 | } | |
2838 | rule->ofproto = ofproto; | |
2839 | rule->cr = fm->cr; | |
2840 | rule->pending = NULL; | |
623e1caf | 2841 | rule->flow_cookie = fm->new_cookie; |
1745cd08 | 2842 | rule->created = rule->modified = rule->used = time_msec(); |
7ee20df1 BP |
2843 | rule->idle_timeout = fm->idle_timeout; |
2844 | rule->hard_timeout = fm->hard_timeout; | |
2845 | rule->table_id = table - ofproto->tables; | |
2846 | rule->send_flow_removed = (fm->flags & OFPFF_SEND_FLOW_REM) != 0; | |
f25d0cf3 BP |
2847 | rule->ofpacts = xmemdup(fm->ofpacts, fm->ofpacts_len); |
2848 | rule->ofpacts_len = fm->ofpacts_len; | |
254750ce BP |
2849 | rule->evictable = true; |
2850 | rule->eviction_group = NULL; | |
7ee20df1 BP |
2851 | |
2852 | /* Insert new rule. */ | |
d0918789 | 2853 | victim = oftable_replace_rule(rule); |
5c67e4af BP |
2854 | if (victim && !rule_is_modifiable(victim)) { |
2855 | error = OFPERR_OFPBRC_EPERM; | |
2856 | } else if (victim && victim->pending) { | |
7ee20df1 BP |
2857 | error = OFPROTO_POSTPONE; |
2858 | } else { | |
254750ce BP |
2859 | struct rule *evict; |
2860 | ||
2861 | if (classifier_count(&table->cls) > table->max_flows) { | |
2862 | bool was_evictable; | |
2863 | ||
2864 | was_evictable = rule->evictable; | |
2865 | rule->evictable = false; | |
2866 | evict = choose_rule_to_evict(table); | |
2867 | rule->evictable = was_evictable; | |
2868 | ||
2869 | if (!evict) { | |
2870 | error = OFPERR_OFPFMFC_ALL_TABLES_FULL; | |
2871 | goto exit; | |
2872 | } else if (evict->pending) { | |
2873 | error = OFPROTO_POSTPONE; | |
2874 | goto exit; | |
2875 | } | |
2876 | } else { | |
2877 | evict = NULL; | |
2878 | } | |
2879 | ||
7024dffe | 2880 | group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id); |
7ee20df1 BP |
2881 | ofoperation_create(group, rule, OFOPERATION_ADD); |
2882 | rule->pending->victim = victim; | |
2883 | ||
2884 | error = ofproto->ofproto_class->rule_construct(rule); | |
2885 | if (error) { | |
2886 | ofoperation_destroy(rule->pending); | |
254750ce BP |
2887 | } else if (evict) { |
2888 | delete_flow__(evict, group); | |
7ee20df1 BP |
2889 | } |
2890 | ofopgroup_submit(group); | |
064af421 | 2891 | } |
79eee1eb | 2892 | |
254750ce | 2893 | exit: |
7ee20df1 | 2894 | /* Back out if an error occurred. */ |
79eee1eb | 2895 | if (error) { |
d0918789 | 2896 | oftable_substitute_rule(rule, victim); |
7ee20df1 | 2897 | ofproto_rule_destroy__(rule); |
79eee1eb | 2898 | } |
7ee20df1 | 2899 | return error; |
064af421 | 2900 | } |
79eee1eb BP |
2901 | \f |
2902 | /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */ | |
064af421 | 2903 | |
9ed18e46 BP |
2904 | /* Modifies the rules listed in 'rules', changing their actions to match those |
2905 | * in 'fm'. | |
79eee1eb | 2906 | * |
9ed18e46 BP |
2907 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, |
2908 | * if any. | |
2909 | * | |
2910 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 2911 | static enum ofperr |
7024dffe BP |
2912 | modify_flows__(struct ofproto *ofproto, struct ofconn *ofconn, |
2913 | const struct ofputil_flow_mod *fm, | |
7ee20df1 | 2914 | const struct ofp_header *request, struct list *rules) |
79eee1eb | 2915 | { |
7ee20df1 | 2916 | struct ofopgroup *group; |
9ed18e46 | 2917 | struct rule *rule; |
5c67e4af | 2918 | enum ofperr error; |
79eee1eb | 2919 | |
7024dffe | 2920 | group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id); |
5c67e4af | 2921 | error = OFPERR_OFPBRC_EPERM; |
9ed18e46 | 2922 | LIST_FOR_EACH (rule, ofproto_node, rules) { |
5c67e4af BP |
2923 | if (rule_is_modifiable(rule)) { |
2924 | /* At least one rule is modifiable, don't report EPERM error. */ | |
2925 | error = 0; | |
2926 | } else { | |
2927 | continue; | |
2928 | } | |
2929 | ||
f25d0cf3 BP |
2930 | if (!ofpacts_equal(fm->ofpacts, fm->ofpacts_len, |
2931 | rule->ofpacts, rule->ofpacts_len)) { | |
7ee20df1 | 2932 | ofoperation_create(group, rule, OFOPERATION_MODIFY); |
f25d0cf3 BP |
2933 | rule->pending->ofpacts = rule->ofpacts; |
2934 | rule->pending->ofpacts_len = rule->ofpacts_len; | |
2935 | rule->ofpacts = xmemdup(fm->ofpacts, fm->ofpacts_len); | |
2936 | rule->ofpacts_len = fm->ofpacts_len; | |
2937 | rule->ofproto->ofproto_class->rule_modify_actions(rule); | |
308881af BP |
2938 | } else { |
2939 | rule->modified = time_msec(); | |
5ecc9d81 | 2940 | } |
623e1caf JP |
2941 | if (fm->new_cookie != htonll(UINT64_MAX)) { |
2942 | rule->flow_cookie = fm->new_cookie; | |
2943 | } | |
5ecc9d81 | 2944 | } |
7ee20df1 | 2945 | ofopgroup_submit(group); |
79eee1eb | 2946 | |
5c67e4af | 2947 | return error; |
9ed18e46 BP |
2948 | } |
2949 | ||
90bf1e07 BP |
2950 | /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on |
2951 | * failure. | |
9ed18e46 BP |
2952 | * |
2953 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, | |
2954 | * if any. */ | |
90bf1e07 | 2955 | static enum ofperr |
7024dffe | 2956 | modify_flows_loose(struct ofproto *ofproto, struct ofconn *ofconn, |
1b9d6420 | 2957 | const struct ofputil_flow_mod *fm, |
7ee20df1 | 2958 | const struct ofp_header *request) |
9ed18e46 | 2959 | { |
9ed18e46 BP |
2960 | struct list rules; |
2961 | int error; | |
2962 | ||
e729e793 JP |
2963 | error = collect_rules_loose(ofproto, fm->table_id, &fm->cr, |
2964 | fm->cookie, fm->cookie_mask, | |
2965 | OFPP_NONE, &rules); | |
623e1caf JP |
2966 | if (error) { |
2967 | return error; | |
2968 | } else if (list_is_empty(&rules)) { | |
2969 | return fm->cookie_mask ? 0 : add_flow(ofproto, ofconn, fm, request); | |
2970 | } else { | |
2971 | return modify_flows__(ofproto, ofconn, fm, request, &rules); | |
2972 | } | |
79eee1eb BP |
2973 | } |
2974 | ||
2975 | /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error | |
90bf1e07 | 2976 | * code on failure. |
79eee1eb | 2977 | * |
9ed18e46 | 2978 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, |
79eee1eb | 2979 | * if any. */ |
90bf1e07 | 2980 | static enum ofperr |
7024dffe | 2981 | modify_flow_strict(struct ofproto *ofproto, struct ofconn *ofconn, |
1b9d6420 | 2982 | const struct ofputil_flow_mod *fm, |
7ee20df1 | 2983 | const struct ofp_header *request) |
79eee1eb | 2984 | { |
9ed18e46 | 2985 | struct list rules; |
6c1491fb BP |
2986 | int error; |
2987 | ||
e729e793 JP |
2988 | error = collect_rules_strict(ofproto, fm->table_id, &fm->cr, |
2989 | fm->cookie, fm->cookie_mask, | |
2990 | OFPP_NONE, &rules); | |
623e1caf JP |
2991 | |
2992 | if (error) { | |
2993 | return error; | |
2994 | } else if (list_is_empty(&rules)) { | |
2995 | return fm->cookie_mask ? 0 : add_flow(ofproto, ofconn, fm, request); | |
2996 | } else { | |
2997 | return list_is_singleton(&rules) ? modify_flows__(ofproto, ofconn, | |
2998 | fm, request, &rules) | |
2999 | : 0; | |
3000 | } | |
79eee1eb | 3001 | } |
9ed18e46 BP |
3002 | \f |
3003 | /* OFPFC_DELETE implementation. */ | |
79eee1eb | 3004 | |
254750ce BP |
3005 | static void |
3006 | delete_flow__(struct rule *rule, struct ofopgroup *group) | |
3007 | { | |
3008 | struct ofproto *ofproto = rule->ofproto; | |
3009 | ||
3010 | ofproto_rule_send_removed(rule, OFPRR_DELETE); | |
3011 | ||
3012 | ofoperation_create(group, rule, OFOPERATION_DELETE); | |
3013 | oftable_remove_rule(rule); | |
3014 | ofproto->ofproto_class->rule_destruct(rule); | |
3015 | } | |
3016 | ||
9ed18e46 BP |
3017 | /* Deletes the rules listed in 'rules'. |
3018 | * | |
3019 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 3020 | static enum ofperr |
7024dffe BP |
3021 | delete_flows__(struct ofproto *ofproto, struct ofconn *ofconn, |
3022 | const struct ofp_header *request, struct list *rules) | |
064af421 | 3023 | { |
9ed18e46 | 3024 | struct rule *rule, *next; |
7ee20df1 | 3025 | struct ofopgroup *group; |
79eee1eb | 3026 | |
7024dffe | 3027 | group = ofopgroup_create(ofproto, ofconn, request, UINT32_MAX); |
9ed18e46 | 3028 | LIST_FOR_EACH_SAFE (rule, next, ofproto_node, rules) { |
254750ce | 3029 | delete_flow__(rule, group); |
79eee1eb | 3030 | } |
7ee20df1 | 3031 | ofopgroup_submit(group); |
79eee1eb | 3032 | |
9ed18e46 | 3033 | return 0; |
79eee1eb | 3034 | } |
79eee1eb BP |
3035 | |
3036 | /* Implements OFPFC_DELETE. */ | |
90bf1e07 | 3037 | static enum ofperr |
7024dffe BP |
3038 | delete_flows_loose(struct ofproto *ofproto, struct ofconn *ofconn, |
3039 | const struct ofputil_flow_mod *fm, | |
7ee20df1 | 3040 | const struct ofp_header *request) |
79eee1eb | 3041 | { |
9ed18e46 | 3042 | struct list rules; |
90bf1e07 | 3043 | enum ofperr error; |
064af421 | 3044 | |
e729e793 JP |
3045 | error = collect_rules_loose(ofproto, fm->table_id, &fm->cr, |
3046 | fm->cookie, fm->cookie_mask, | |
3047 | fm->out_port, &rules); | |
9ed18e46 | 3048 | return (error ? error |
7024dffe BP |
3049 | : !list_is_empty(&rules) ? delete_flows__(ofproto, ofconn, request, |
3050 | &rules) | |
9ed18e46 | 3051 | : 0); |
064af421 BP |
3052 | } |
3053 | ||
79eee1eb | 3054 | /* Implements OFPFC_DELETE_STRICT. */ |
90bf1e07 | 3055 | static enum ofperr |
7024dffe | 3056 | delete_flow_strict(struct ofproto *ofproto, struct ofconn *ofconn, |
1b9d6420 | 3057 | const struct ofputil_flow_mod *fm, |
7ee20df1 | 3058 | const struct ofp_header *request) |
79eee1eb | 3059 | { |
9ed18e46 | 3060 | struct list rules; |
90bf1e07 | 3061 | enum ofperr error; |
79eee1eb | 3062 | |
e729e793 JP |
3063 | error = collect_rules_strict(ofproto, fm->table_id, &fm->cr, |
3064 | fm->cookie, fm->cookie_mask, | |
3065 | fm->out_port, &rules); | |
9ed18e46 | 3066 | return (error ? error |
7024dffe BP |
3067 | : list_is_singleton(&rules) ? delete_flows__(ofproto, ofconn, |
3068 | request, &rules) | |
9ed18e46 | 3069 | : 0); |
abe529af BP |
3070 | } |
3071 | ||
3072 | static void | |
3073 | ofproto_rule_send_removed(struct rule *rule, uint8_t reason) | |
3074 | { | |
3075 | struct ofputil_flow_removed fr; | |
3076 | ||
3077 | if (rule_is_hidden(rule) || !rule->send_flow_removed) { | |
3078 | return; | |
3079 | } | |
3080 | ||
3081 | fr.rule = rule->cr; | |
3082 | fr.cookie = rule->flow_cookie; | |
3083 | fr.reason = reason; | |
f27f2134 BP |
3084 | calc_flow_duration__(rule->created, time_msec(), |
3085 | &fr.duration_sec, &fr.duration_nsec); | |
abe529af BP |
3086 | fr.idle_timeout = rule->idle_timeout; |
3087 | rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count, | |
3088 | &fr.byte_count); | |
3089 | ||
3090 | connmgr_send_flow_removed(rule->ofproto->connmgr, &fr); | |
3091 | } | |
3092 | ||
1745cd08 BP |
3093 | void |
3094 | ofproto_rule_update_used(struct rule *rule, long long int used) | |
3095 | { | |
3096 | if (used > rule->used) { | |
254750ce BP |
3097 | struct eviction_group *evg = rule->eviction_group; |
3098 | ||
1745cd08 | 3099 | rule->used = used; |
254750ce BP |
3100 | if (evg) { |
3101 | heap_change(&evg->rules, &rule->evg_node, | |
3102 | rule_eviction_priority(rule)); | |
3103 | } | |
1745cd08 BP |
3104 | } |
3105 | } | |
3106 | ||
abe529af BP |
3107 | /* Sends an OpenFlow "flow removed" message with the given 'reason' (either |
3108 | * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its | |
3109 | * ofproto. | |
3110 | * | |
3111 | * ofproto implementation ->run() functions should use this function to expire | |
3112 | * OpenFlow flows. */ | |
3113 | void | |
3114 | ofproto_rule_expire(struct rule *rule, uint8_t reason) | |
3115 | { | |
7ee20df1 BP |
3116 | struct ofproto *ofproto = rule->ofproto; |
3117 | struct ofopgroup *group; | |
3118 | ||
abe529af | 3119 | assert(reason == OFPRR_HARD_TIMEOUT || reason == OFPRR_IDLE_TIMEOUT); |
7ee20df1 | 3120 | |
abe529af | 3121 | ofproto_rule_send_removed(rule, reason); |
7ee20df1 | 3122 | |
7024dffe | 3123 | group = ofopgroup_create_unattached(ofproto); |
7ee20df1 | 3124 | ofoperation_create(group, rule, OFOPERATION_DELETE); |
d0918789 | 3125 | oftable_remove_rule(rule); |
254750ce | 3126 | ofproto->ofproto_class->rule_destruct(rule); |
7ee20df1 | 3127 | ofopgroup_submit(group); |
79eee1eb BP |
3128 | } |
3129 | \f | |
90bf1e07 | 3130 | static enum ofperr |
2e4f5fcf | 3131 | handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3132 | { |
a5b8d268 | 3133 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
a9a2da38 | 3134 | struct ofputil_flow_mod fm; |
f25d0cf3 BP |
3135 | uint64_t ofpacts_stub[1024 / 8]; |
3136 | struct ofpbuf ofpacts; | |
90bf1e07 | 3137 | enum ofperr error; |
a5b8d268 | 3138 | long long int now; |
064af421 | 3139 | |
76589937 | 3140 | error = reject_slave_controller(ofconn); |
9deba63b | 3141 | if (error) { |
f25d0cf3 | 3142 | goto exit; |
9deba63b | 3143 | } |
3052b0c5 | 3144 | |
f25d0cf3 BP |
3145 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
3146 | error = ofputil_decode_flow_mod(&fm, oh, ofconn_get_protocol(ofconn), | |
3147 | &ofpacts); | |
064af421 | 3148 | if (error) { |
f25d0cf3 | 3149 | goto exit_free_ofpacts; |
064af421 BP |
3150 | } |
3151 | ||
b5600ca2 BP |
3152 | /* We do not support the OpenFlow 1.0 emergency flow cache, which is not |
3153 | * required in OpenFlow 1.0.1 and removed from OpenFlow 1.1. */ | |
2e4f5fcf | 3154 | if (fm.flags & OFPFF_EMERG) { |
f25d0cf3 BP |
3155 | /* We do not support the emergency flow cache. It will hopefully get |
3156 | * dropped from OpenFlow in the near future. There is no good error | |
3157 | * code, so just state that the flow table is full. */ | |
3158 | error = OFPERR_OFPFMFC_ALL_TABLES_FULL; | |
3159 | } else { | |
3160 | error = handle_flow_mod__(ofconn_get_ofproto(ofconn), ofconn, &fm, oh); | |
49bdc010 | 3161 | } |
a5b8d268 | 3162 | if (error) { |
f25d0cf3 | 3163 | goto exit_free_ofpacts; |
a5b8d268 BP |
3164 | } |
3165 | ||
3166 | /* Record the operation for logging a summary report. */ | |
3167 | switch (fm.command) { | |
3168 | case OFPFC_ADD: | |
3169 | ofproto->n_add++; | |
3170 | break; | |
3171 | ||
3172 | case OFPFC_MODIFY: | |
3173 | case OFPFC_MODIFY_STRICT: | |
3174 | ofproto->n_modify++; | |
3175 | break; | |
3176 | ||
3177 | case OFPFC_DELETE: | |
3178 | case OFPFC_DELETE_STRICT: | |
3179 | ofproto->n_delete++; | |
3180 | break; | |
3181 | } | |
3182 | ||
3183 | now = time_msec(); | |
3184 | if (ofproto->next_op_report == LLONG_MAX) { | |
3185 | ofproto->first_op = now; | |
3186 | ofproto->next_op_report = MAX(now + 10 * 1000, | |
3187 | ofproto->op_backoff); | |
3188 | ofproto->op_backoff = ofproto->next_op_report + 60 * 1000; | |
3189 | } | |
3190 | ofproto->last_op = now; | |
3191 | ||
f25d0cf3 BP |
3192 | exit_free_ofpacts: |
3193 | ofpbuf_uninit(&ofpacts); | |
3194 | exit: | |
3195 | return error; | |
75a75043 BP |
3196 | } |
3197 | ||
90bf1e07 | 3198 | static enum ofperr |
75a75043 BP |
3199 | handle_flow_mod__(struct ofproto *ofproto, struct ofconn *ofconn, |
3200 | const struct ofputil_flow_mod *fm, | |
3201 | const struct ofp_header *oh) | |
3202 | { | |
3203 | if (ofproto->n_pending >= 50) { | |
3204 | assert(!list_is_empty(&ofproto->pending)); | |
3205 | return OFPROTO_POSTPONE; | |
3206 | } | |
3207 | ||
3208 | switch (fm->command) { | |
3052b0c5 | 3209 | case OFPFC_ADD: |
75a75043 | 3210 | return add_flow(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3211 | |
3212 | case OFPFC_MODIFY: | |
75a75043 | 3213 | return modify_flows_loose(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3214 | |
3215 | case OFPFC_MODIFY_STRICT: | |
75a75043 | 3216 | return modify_flow_strict(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3217 | |
3218 | case OFPFC_DELETE: | |
75a75043 | 3219 | return delete_flows_loose(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3220 | |
3221 | case OFPFC_DELETE_STRICT: | |
75a75043 | 3222 | return delete_flow_strict(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3223 | |
3224 | default: | |
75a75043 | 3225 | if (fm->command > 0xff) { |
fbfa2911 BP |
3226 | VLOG_WARN_RL(&rl, "%s: flow_mod has explicit table_id but " |
3227 | "flow_mod_table_id extension is not enabled", | |
3228 | ofproto->name); | |
6c1491fb | 3229 | } |
90bf1e07 | 3230 | return OFPERR_OFPFMFC_BAD_COMMAND; |
3052b0c5 BP |
3231 | } |
3232 | } | |
3233 | ||
90bf1e07 | 3234 | static enum ofperr |
d1e2cf21 | 3235 | handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh) |
9deba63b | 3236 | { |
d1e2cf21 | 3237 | struct nx_role_request *nrr = (struct nx_role_request *) oh; |
9deba63b BP |
3238 | struct nx_role_request *reply; |
3239 | struct ofpbuf *buf; | |
3240 | uint32_t role; | |
3241 | ||
9deba63b BP |
3242 | role = ntohl(nrr->role); |
3243 | if (role != NX_ROLE_OTHER && role != NX_ROLE_MASTER | |
3244 | && role != NX_ROLE_SLAVE) { | |
2e0525bc | 3245 | return OFPERR_OFPRRFC_BAD_ROLE; |
9deba63b BP |
3246 | } |
3247 | ||
7ee20df1 BP |
3248 | if (ofconn_get_role(ofconn) != role |
3249 | && ofconn_has_pending_opgroups(ofconn)) { | |
3250 | return OFPROTO_POSTPONE; | |
3251 | } | |
3252 | ||
1ce0a5fa | 3253 | ofconn_set_role(ofconn, role); |
9deba63b | 3254 | |
d1e2cf21 | 3255 | reply = make_nxmsg_xid(sizeof *reply, NXT_ROLE_REPLY, oh->xid, &buf); |
9deba63b | 3256 | reply->role = htonl(role); |
b0421aa2 | 3257 | ofconn_send_reply(ofconn, buf); |
9deba63b BP |
3258 | |
3259 | return 0; | |
3260 | } | |
3261 | ||
90bf1e07 | 3262 | static enum ofperr |
6c1491fb BP |
3263 | handle_nxt_flow_mod_table_id(struct ofconn *ofconn, |
3264 | const struct ofp_header *oh) | |
3265 | { | |
73dbf4ab BP |
3266 | const struct nx_flow_mod_table_id *msg |
3267 | = (const struct nx_flow_mod_table_id *) oh; | |
27527aa0 BP |
3268 | enum ofputil_protocol cur, next; |
3269 | ||
3270 | cur = ofconn_get_protocol(ofconn); | |
3271 | next = ofputil_protocol_set_tid(cur, msg->set != 0); | |
3272 | ofconn_set_protocol(ofconn, next); | |
6c1491fb | 3273 | |
6c1491fb BP |
3274 | return 0; |
3275 | } | |
3276 | ||
90bf1e07 | 3277 | static enum ofperr |
d1e2cf21 | 3278 | handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh) |
09246b99 | 3279 | { |
73dbf4ab BP |
3280 | const struct nx_set_flow_format *msg |
3281 | = (const struct nx_set_flow_format *) oh; | |
27527aa0 BP |
3282 | enum ofputil_protocol cur, next; |
3283 | enum ofputil_protocol next_base; | |
09246b99 | 3284 | |
27527aa0 BP |
3285 | next_base = ofputil_nx_flow_format_to_protocol(ntohl(msg->format)); |
3286 | if (!next_base) { | |
90bf1e07 | 3287 | return OFPERR_OFPBRC_EPERM; |
09246b99 | 3288 | } |
7ee20df1 | 3289 | |
27527aa0 BP |
3290 | cur = ofconn_get_protocol(ofconn); |
3291 | next = ofputil_protocol_set_base(cur, next_base); | |
3292 | if (cur != next && ofconn_has_pending_opgroups(ofconn)) { | |
3293 | /* Avoid sending async messages in surprising protocol. */ | |
7ee20df1 BP |
3294 | return OFPROTO_POSTPONE; |
3295 | } | |
3296 | ||
27527aa0 | 3297 | ofconn_set_protocol(ofconn, next); |
7ee20df1 | 3298 | return 0; |
09246b99 BP |
3299 | } |
3300 | ||
90bf1e07 | 3301 | static enum ofperr |
54834960 EJ |
3302 | handle_nxt_set_packet_in_format(struct ofconn *ofconn, |
3303 | const struct ofp_header *oh) | |
3304 | { | |
73dbf4ab | 3305 | const struct nx_set_packet_in_format *msg; |
54834960 EJ |
3306 | uint32_t format; |
3307 | ||
73dbf4ab | 3308 | msg = (const struct nx_set_packet_in_format *) oh; |
54834960 | 3309 | format = ntohl(msg->format); |
a15f0eeb | 3310 | if (format != NXPIF_OPENFLOW10 && format != NXPIF_NXM) { |
90bf1e07 | 3311 | return OFPERR_OFPBRC_EPERM; |
54834960 EJ |
3312 | } |
3313 | ||
3314 | if (format != ofconn_get_packet_in_format(ofconn) | |
3315 | && ofconn_has_pending_opgroups(ofconn)) { | |
3316 | /* Avoid sending async message in surprsing packet in format. */ | |
3317 | return OFPROTO_POSTPONE; | |
3318 | } | |
3319 | ||
3320 | ofconn_set_packet_in_format(ofconn, format); | |
3321 | return 0; | |
3322 | } | |
3323 | ||
80d5aefd BP |
3324 | static enum ofperr |
3325 | handle_nxt_set_async_config(struct ofconn *ofconn, const struct ofp_header *oh) | |
3326 | { | |
3327 | const struct nx_async_config *msg = (const struct nx_async_config *) oh; | |
3328 | uint32_t master[OAM_N_TYPES]; | |
3329 | uint32_t slave[OAM_N_TYPES]; | |
3330 | ||
3331 | master[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[0]); | |
3332 | master[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[0]); | |
3333 | master[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[0]); | |
3334 | ||
3335 | slave[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[1]); | |
3336 | slave[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[1]); | |
3337 | slave[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[1]); | |
3338 | ||
3339 | ofconn_set_async_config(ofconn, master, slave); | |
4550b647 MM |
3340 | if (ofconn_get_type(ofconn) == OFCONN_SERVICE && |
3341 | !ofconn_get_miss_send_len(ofconn)) { | |
3342 | ofconn_set_miss_send_len(ofconn, OFP_DEFAULT_MISS_SEND_LEN); | |
3343 | } | |
80d5aefd BP |
3344 | |
3345 | return 0; | |
3346 | } | |
3347 | ||
a7349929 BP |
3348 | static enum ofperr |
3349 | handle_nxt_set_controller_id(struct ofconn *ofconn, | |
3350 | const struct ofp_header *oh) | |
3351 | { | |
3352 | const struct nx_controller_id *nci; | |
3353 | ||
3354 | nci = (const struct nx_controller_id *) oh; | |
3355 | if (!is_all_zeros(nci->zero, sizeof nci->zero)) { | |
3356 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
3357 | } | |
3358 | ||
3359 | ofconn_set_controller_id(ofconn, ntohs(nci->controller_id)); | |
3360 | return 0; | |
3361 | } | |
3362 | ||
90bf1e07 | 3363 | static enum ofperr |
d1e2cf21 | 3364 | handle_barrier_request(struct ofconn *ofconn, const struct ofp_header *oh) |
246e61ea | 3365 | { |
246e61ea JP |
3366 | struct ofpbuf *buf; |
3367 | ||
7ee20df1 BP |
3368 | if (ofconn_has_pending_opgroups(ofconn)) { |
3369 | return OFPROTO_POSTPONE; | |
3370 | } | |
3371 | ||
4ceb7081 | 3372 | make_openflow_xid(sizeof *oh, OFPT10_BARRIER_REPLY, oh->xid, &buf); |
b0421aa2 | 3373 | ofconn_send_reply(ofconn, buf); |
246e61ea JP |
3374 | return 0; |
3375 | } | |
3376 | ||
90bf1e07 | 3377 | static enum ofperr |
d1e2cf21 | 3378 | handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg) |
064af421 | 3379 | { |
d1e2cf21 BP |
3380 | const struct ofp_header *oh = msg->data; |
3381 | const struct ofputil_msg_type *type; | |
90bf1e07 | 3382 | enum ofperr error; |
064af421 | 3383 | |
d1e2cf21 BP |
3384 | error = ofputil_decode_msg_type(oh, &type); |
3385 | if (error) { | |
3386 | return error; | |
3387 | } | |
064af421 | 3388 | |
d1e2cf21 BP |
3389 | switch (ofputil_msg_type_code(type)) { |
3390 | /* OpenFlow requests. */ | |
3391 | case OFPUTIL_OFPT_ECHO_REQUEST: | |
3392 | return handle_echo_request(ofconn, oh); | |
064af421 | 3393 | |
d1e2cf21 BP |
3394 | case OFPUTIL_OFPT_FEATURES_REQUEST: |
3395 | return handle_features_request(ofconn, oh); | |
064af421 | 3396 | |
d1e2cf21 BP |
3397 | case OFPUTIL_OFPT_GET_CONFIG_REQUEST: |
3398 | return handle_get_config_request(ofconn, oh); | |
064af421 | 3399 | |
d1e2cf21 BP |
3400 | case OFPUTIL_OFPT_SET_CONFIG: |
3401 | return handle_set_config(ofconn, msg->data); | |
064af421 | 3402 | |
d1e2cf21 | 3403 | case OFPUTIL_OFPT_PACKET_OUT: |
c6a93eb7 | 3404 | return handle_packet_out(ofconn, msg->data); |
064af421 | 3405 | |
d1e2cf21 BP |
3406 | case OFPUTIL_OFPT_PORT_MOD: |
3407 | return handle_port_mod(ofconn, oh); | |
064af421 | 3408 | |
d1e2cf21 | 3409 | case OFPUTIL_OFPT_FLOW_MOD: |
2e4f5fcf | 3410 | return handle_flow_mod(ofconn, oh); |
064af421 | 3411 | |
d1e2cf21 BP |
3412 | case OFPUTIL_OFPT_BARRIER_REQUEST: |
3413 | return handle_barrier_request(ofconn, oh); | |
064af421 | 3414 | |
d1e2cf21 BP |
3415 | /* OpenFlow replies. */ |
3416 | case OFPUTIL_OFPT_ECHO_REPLY: | |
3417 | return 0; | |
246e61ea | 3418 | |
d1e2cf21 | 3419 | /* Nicira extension requests. */ |
d1e2cf21 BP |
3420 | case OFPUTIL_NXT_ROLE_REQUEST: |
3421 | return handle_role_request(ofconn, oh); | |
3422 | ||
6c1491fb BP |
3423 | case OFPUTIL_NXT_FLOW_MOD_TABLE_ID: |
3424 | return handle_nxt_flow_mod_table_id(ofconn, oh); | |
d1e2cf21 BP |
3425 | |
3426 | case OFPUTIL_NXT_SET_FLOW_FORMAT: | |
3427 | return handle_nxt_set_flow_format(ofconn, oh); | |
3428 | ||
54834960 EJ |
3429 | case OFPUTIL_NXT_SET_PACKET_IN_FORMAT: |
3430 | return handle_nxt_set_packet_in_format(ofconn, oh); | |
3431 | ||
a7349929 BP |
3432 | case OFPUTIL_NXT_SET_CONTROLLER_ID: |
3433 | return handle_nxt_set_controller_id(ofconn, oh); | |
3434 | ||
d1e2cf21 | 3435 | case OFPUTIL_NXT_FLOW_MOD: |
2e4f5fcf | 3436 | return handle_flow_mod(ofconn, oh); |
d1e2cf21 | 3437 | |
f27f2134 BP |
3438 | case OFPUTIL_NXT_FLOW_AGE: |
3439 | /* Nothing to do. */ | |
3440 | return 0; | |
3441 | ||
80d5aefd BP |
3442 | case OFPUTIL_NXT_SET_ASYNC_CONFIG: |
3443 | return handle_nxt_set_async_config(ofconn, oh); | |
3444 | ||
349adfb2 | 3445 | /* Statistics requests. */ |
d1e2cf21 | 3446 | case OFPUTIL_OFPST_DESC_REQUEST: |
63f2140a | 3447 | return handle_desc_stats_request(ofconn, msg->data); |
d1e2cf21 BP |
3448 | |
3449 | case OFPUTIL_OFPST_FLOW_REQUEST: | |
349adfb2 | 3450 | case OFPUTIL_NXST_FLOW_REQUEST: |
63f2140a | 3451 | return handle_flow_stats_request(ofconn, msg->data); |
d1e2cf21 BP |
3452 | |
3453 | case OFPUTIL_OFPST_AGGREGATE_REQUEST: | |
76c93b22 | 3454 | case OFPUTIL_NXST_AGGREGATE_REQUEST: |
63f2140a | 3455 | return handle_aggregate_stats_request(ofconn, msg->data); |
d1e2cf21 BP |
3456 | |
3457 | case OFPUTIL_OFPST_TABLE_REQUEST: | |
63f2140a | 3458 | return handle_table_stats_request(ofconn, msg->data); |
d1e2cf21 BP |
3459 | |
3460 | case OFPUTIL_OFPST_PORT_REQUEST: | |
63f2140a | 3461 | return handle_port_stats_request(ofconn, msg->data); |
d1e2cf21 BP |
3462 | |
3463 | case OFPUTIL_OFPST_QUEUE_REQUEST: | |
63f2140a | 3464 | return handle_queue_stats_request(ofconn, msg->data); |
d1e2cf21 | 3465 | |
2be393ed JP |
3466 | case OFPUTIL_OFPST_PORT_DESC_REQUEST: |
3467 | return handle_port_desc_stats_request(ofconn, msg->data); | |
3468 | ||
8f93e93c | 3469 | case OFPUTIL_MSG_INVALID: |
d1e2cf21 BP |
3470 | case OFPUTIL_OFPT_HELLO: |
3471 | case OFPUTIL_OFPT_ERROR: | |
3472 | case OFPUTIL_OFPT_FEATURES_REPLY: | |
3473 | case OFPUTIL_OFPT_GET_CONFIG_REPLY: | |
3474 | case OFPUTIL_OFPT_PACKET_IN: | |
3475 | case OFPUTIL_OFPT_FLOW_REMOVED: | |
3476 | case OFPUTIL_OFPT_PORT_STATUS: | |
3477 | case OFPUTIL_OFPT_BARRIER_REPLY: | |
3478 | case OFPUTIL_OFPT_QUEUE_GET_CONFIG_REQUEST: | |
3479 | case OFPUTIL_OFPT_QUEUE_GET_CONFIG_REPLY: | |
3480 | case OFPUTIL_OFPST_DESC_REPLY: | |
3481 | case OFPUTIL_OFPST_FLOW_REPLY: | |
3482 | case OFPUTIL_OFPST_QUEUE_REPLY: | |
3483 | case OFPUTIL_OFPST_PORT_REPLY: | |
3484 | case OFPUTIL_OFPST_TABLE_REPLY: | |
3485 | case OFPUTIL_OFPST_AGGREGATE_REPLY: | |
2be393ed | 3486 | case OFPUTIL_OFPST_PORT_DESC_REPLY: |
d1e2cf21 BP |
3487 | case OFPUTIL_NXT_ROLE_REPLY: |
3488 | case OFPUTIL_NXT_FLOW_REMOVED: | |
54834960 | 3489 | case OFPUTIL_NXT_PACKET_IN: |
d1e2cf21 BP |
3490 | case OFPUTIL_NXST_FLOW_REPLY: |
3491 | case OFPUTIL_NXST_AGGREGATE_REPLY: | |
064af421 | 3492 | default: |
5293a2e1 BP |
3493 | return (oh->type == OFPT10_STATS_REQUEST || |
3494 | oh->type == OFPT10_STATS_REPLY | |
3495 | ? OFPERR_OFPBRC_BAD_STAT | |
3496 | : OFPERR_OFPBRC_BAD_TYPE); | |
064af421 | 3497 | } |
d1e2cf21 | 3498 | } |
064af421 | 3499 | |
7ee20df1 | 3500 | static bool |
d1e2cf21 BP |
3501 | handle_openflow(struct ofconn *ofconn, struct ofpbuf *ofp_msg) |
3502 | { | |
3503 | int error = handle_openflow__(ofconn, ofp_msg); | |
7ee20df1 | 3504 | if (error && error != OFPROTO_POSTPONE) { |
1be5ff75 | 3505 | ofconn_send_error(ofconn, ofp_msg->data, error); |
064af421 | 3506 | } |
d1e2cf21 | 3507 | COVERAGE_INC(ofproto_recv_openflow); |
7ee20df1 BP |
3508 | return error != OFPROTO_POSTPONE; |
3509 | } | |
3510 | \f | |
3511 | /* Asynchronous operations. */ | |
3512 | ||
3513 | /* Creates and returns a new ofopgroup that is not associated with any | |
3514 | * OpenFlow connection. | |
3515 | * | |
3516 | * The caller should add operations to the returned group with | |
3517 | * ofoperation_create() and then submit it with ofopgroup_submit(). */ | |
3518 | static struct ofopgroup * | |
7024dffe | 3519 | ofopgroup_create_unattached(struct ofproto *ofproto) |
7ee20df1 BP |
3520 | { |
3521 | struct ofopgroup *group = xzalloc(sizeof *group); | |
3522 | group->ofproto = ofproto; | |
3523 | list_init(&group->ofproto_node); | |
3524 | list_init(&group->ops); | |
3525 | list_init(&group->ofconn_node); | |
3526 | return group; | |
3527 | } | |
3528 | ||
7024dffe BP |
3529 | /* Creates and returns a new ofopgroup for 'ofproto'. |
3530 | * | |
3531 | * If 'ofconn' is NULL, the new ofopgroup is not associated with any OpenFlow | |
3532 | * connection. The 'request' and 'buffer_id' arguments are ignored. | |
3533 | * | |
3534 | * If 'ofconn' is nonnull, then the new ofopgroup is associated with 'ofconn'. | |
3535 | * If the ofopgroup eventually fails, then the error reply will include | |
3536 | * 'request'. If the ofopgroup eventually succeeds, then the packet with | |
3537 | * buffer id 'buffer_id' on 'ofconn' will be sent by 'ofconn''s ofproto. | |
7ee20df1 BP |
3538 | * |
3539 | * The caller should add operations to the returned group with | |
3540 | * ofoperation_create() and then submit it with ofopgroup_submit(). */ | |
3541 | static struct ofopgroup * | |
7024dffe BP |
3542 | ofopgroup_create(struct ofproto *ofproto, struct ofconn *ofconn, |
3543 | const struct ofp_header *request, uint32_t buffer_id) | |
7ee20df1 | 3544 | { |
7024dffe BP |
3545 | struct ofopgroup *group = ofopgroup_create_unattached(ofproto); |
3546 | if (ofconn) { | |
3547 | size_t request_len = ntohs(request->length); | |
7ee20df1 | 3548 | |
7024dffe | 3549 | assert(ofconn_get_ofproto(ofconn) == ofproto); |
7ee20df1 | 3550 | |
7024dffe BP |
3551 | ofconn_add_opgroup(ofconn, &group->ofconn_node); |
3552 | group->ofconn = ofconn; | |
3553 | group->request = xmemdup(request, MIN(request_len, 64)); | |
3554 | group->buffer_id = buffer_id; | |
3555 | } | |
7ee20df1 BP |
3556 | return group; |
3557 | } | |
3558 | ||
3559 | /* Submits 'group' for processing. | |
3560 | * | |
3561 | * If 'group' contains no operations (e.g. none were ever added, or all of the | |
3562 | * ones that were added completed synchronously), then it is destroyed | |
3563 | * immediately. Otherwise it is added to the ofproto's list of pending | |
3564 | * groups. */ | |
3565 | static void | |
3566 | ofopgroup_submit(struct ofopgroup *group) | |
3567 | { | |
3568 | if (list_is_empty(&group->ops)) { | |
3569 | ofopgroup_destroy(group); | |
3570 | } else { | |
3571 | list_push_back(&group->ofproto->pending, &group->ofproto_node); | |
dd5616b3 | 3572 | group->ofproto->n_pending++; |
7ee20df1 BP |
3573 | } |
3574 | } | |
3575 | ||
3576 | static void | |
3577 | ofopgroup_destroy(struct ofopgroup *group) | |
3578 | { | |
3579 | assert(list_is_empty(&group->ops)); | |
3580 | if (!list_is_empty(&group->ofproto_node)) { | |
dd5616b3 BP |
3581 | assert(group->ofproto->n_pending > 0); |
3582 | group->ofproto->n_pending--; | |
7ee20df1 BP |
3583 | list_remove(&group->ofproto_node); |
3584 | } | |
3585 | if (!list_is_empty(&group->ofconn_node)) { | |
3586 | list_remove(&group->ofconn_node); | |
3587 | if (group->error) { | |
3588 | ofconn_send_error(group->ofconn, group->request, group->error); | |
3589 | } | |
3590 | connmgr_retry(group->ofproto->connmgr); | |
3591 | } | |
3592 | free(group->request); | |
3593 | free(group); | |
3594 | } | |
3595 | ||
3596 | /* Initiates a new operation on 'rule', of the specified 'type', within | |
3597 | * 'group'. Prior to calling, 'rule' must not have any pending operation. */ | |
3598 | static void | |
3599 | ofoperation_create(struct ofopgroup *group, struct rule *rule, | |
3600 | enum ofoperation_type type) | |
3601 | { | |
a5b8d268 | 3602 | struct ofproto *ofproto = group->ofproto; |
7ee20df1 BP |
3603 | struct ofoperation *op; |
3604 | ||
3605 | assert(!rule->pending); | |
3606 | ||
3607 | op = rule->pending = xzalloc(sizeof *op); | |
3608 | op->group = group; | |
3609 | list_push_back(&group->ops, &op->group_node); | |
3610 | op->rule = rule; | |
3611 | op->type = type; | |
7ee20df1 BP |
3612 | op->flow_cookie = rule->flow_cookie; |
3613 | ||
3614 | if (type == OFOPERATION_DELETE) { | |
a5b8d268 | 3615 | hmap_insert(&ofproto->deletions, &op->hmap_node, |
7ee20df1 BP |
3616 | cls_rule_hash(&rule->cr, rule->table_id)); |
3617 | } | |
3618 | } | |
3619 | ||
3620 | static void | |
3621 | ofoperation_destroy(struct ofoperation *op) | |
3622 | { | |
3623 | struct ofopgroup *group = op->group; | |
3624 | ||
3625 | if (op->rule) { | |
3626 | op->rule->pending = NULL; | |
3627 | } | |
3628 | if (op->type == OFOPERATION_DELETE) { | |
3629 | hmap_remove(&group->ofproto->deletions, &op->hmap_node); | |
3630 | } | |
3631 | list_remove(&op->group_node); | |
f25d0cf3 | 3632 | free(op->ofpacts); |
7ee20df1 BP |
3633 | free(op); |
3634 | ||
3635 | if (list_is_empty(&group->ops) && !list_is_empty(&group->ofproto_node)) { | |
3636 | ofopgroup_destroy(group); | |
3637 | } | |
3638 | } | |
3639 | ||
3640 | /* Indicates that 'op' completed with status 'error', which is either 0 to | |
90bf1e07 | 3641 | * indicate success or an OpenFlow error code on failure. |
7ee20df1 | 3642 | * |
a6a62132 BP |
3643 | * If 'error' is 0, indicating success, the operation will be committed |
3644 | * permanently to the flow table. There is one interesting subcase: | |
3645 | * | |
3646 | * - If 'op' is an "add flow" operation that is replacing an existing rule in | |
3647 | * the flow table (the "victim" rule) by a new one, then the caller must | |
3648 | * have uninitialized any derived state in the victim rule, as in step 5 in | |
3649 | * the "Life Cycle" in ofproto/ofproto-provider.h. ofoperation_complete() | |
3650 | * performs steps 6 and 7 for the victim rule, most notably by calling its | |
3651 | * ->rule_dealloc() function. | |
3652 | * | |
3653 | * If 'error' is nonzero, then generally the operation will be rolled back: | |
3654 | * | |
3655 | * - If 'op' is an "add flow" operation, ofproto removes the new rule or | |
3656 | * restores the original rule. The caller must have uninitialized any | |
3657 | * derived state in the new rule, as in step 5 of in the "Life Cycle" in | |
3658 | * ofproto/ofproto-provider.h. ofoperation_complete() performs steps 6 and | |
3659 | * and 7 for the new rule, calling its ->rule_dealloc() function. | |
3660 | * | |
3661 | * - If 'op' is a "modify flow" operation, ofproto restores the original | |
3662 | * actions. | |
3663 | * | |
3664 | * - 'op' must not be a "delete flow" operation. Removing a rule is not | |
3665 | * allowed to fail. It must always succeed. | |
7ee20df1 | 3666 | * |
5bee6e26 JP |
3667 | * Please see the large comment in ofproto/ofproto-provider.h titled |
3668 | * "Asynchronous Operation Support" for more information. */ | |
7ee20df1 | 3669 | void |
90bf1e07 | 3670 | ofoperation_complete(struct ofoperation *op, enum ofperr error) |
7ee20df1 BP |
3671 | { |
3672 | struct ofopgroup *group = op->group; | |
3673 | struct rule *rule = op->rule; | |
52a90c29 | 3674 | struct ofproto *ofproto = rule->ofproto; |
7ee20df1 BP |
3675 | |
3676 | assert(rule->pending == op); | |
7ee20df1 BP |
3677 | |
3678 | if (!error | |
3679 | && !group->error | |
3680 | && op->type != OFOPERATION_DELETE | |
3681 | && group->ofconn | |
3682 | && group->buffer_id != UINT32_MAX | |
3683 | && list_is_singleton(&op->group_node)) { | |
3684 | struct ofpbuf *packet; | |
3685 | uint16_t in_port; | |
3686 | ||
3687 | error = ofconn_pktbuf_retrieve(group->ofconn, group->buffer_id, | |
3688 | &packet, &in_port); | |
3689 | if (packet) { | |
3690 | assert(!error); | |
3691 | error = rule_execute(rule, in_port, packet); | |
3692 | } | |
3693 | } | |
3694 | if (!group->error) { | |
3695 | group->error = error; | |
3696 | } | |
3697 | ||
3698 | switch (op->type) { | |
3699 | case OFOPERATION_ADD: | |
3700 | if (!error) { | |
1eae3d33 | 3701 | ofproto_rule_destroy__(op->victim); |
9075907c BP |
3702 | if ((rule->cr.wc.vlan_tci_mask & htons(VLAN_VID_MASK)) |
3703 | == htons(VLAN_VID_MASK)) { | |
3704 | if (ofproto->vlan_bitmap) { | |
3705 | uint16_t vid = vlan_tci_to_vid(rule->cr.flow.vlan_tci); | |
3706 | ||
3707 | if (!bitmap_is_set(ofproto->vlan_bitmap, vid)) { | |
3708 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
3709 | ofproto->vlans_changed = true; | |
3710 | } | |
3711 | } else { | |
52a90c29 BP |
3712 | ofproto->vlans_changed = true; |
3713 | } | |
3714 | } | |
7ee20df1 | 3715 | } else { |
d0918789 | 3716 | oftable_substitute_rule(rule, op->victim); |
7ee20df1 | 3717 | ofproto_rule_destroy__(rule); |
12804888 | 3718 | op->rule = NULL; |
7ee20df1 | 3719 | } |
7ee20df1 BP |
3720 | break; |
3721 | ||
3722 | case OFOPERATION_DELETE: | |
3723 | assert(!error); | |
3724 | ofproto_rule_destroy__(rule); | |
3725 | op->rule = NULL; | |
3726 | break; | |
3727 | ||
3728 | case OFOPERATION_MODIFY: | |
308881af BP |
3729 | if (!error) { |
3730 | rule->modified = time_msec(); | |
3731 | } else { | |
f25d0cf3 BP |
3732 | free(rule->ofpacts); |
3733 | rule->ofpacts = op->ofpacts; | |
3734 | rule->ofpacts_len = op->ofpacts_len; | |
3735 | op->ofpacts = NULL; | |
7ee20df1 BP |
3736 | } |
3737 | break; | |
3738 | ||
3739 | default: | |
3740 | NOT_REACHED(); | |
3741 | } | |
3742 | ofoperation_destroy(op); | |
3743 | } | |
3744 | ||
3745 | struct rule * | |
3746 | ofoperation_get_victim(struct ofoperation *op) | |
3747 | { | |
3748 | assert(op->type == OFOPERATION_ADD); | |
3749 | return op->victim; | |
064af421 BP |
3750 | } |
3751 | \f | |
064af421 | 3752 | static uint64_t |
fa60c019 | 3753 | pick_datapath_id(const struct ofproto *ofproto) |
064af421 | 3754 | { |
fa60c019 | 3755 | const struct ofport *port; |
064af421 | 3756 | |
abe529af | 3757 | port = ofproto_get_port(ofproto, OFPP_LOCAL); |
fa60c019 BP |
3758 | if (port) { |
3759 | uint8_t ea[ETH_ADDR_LEN]; | |
3760 | int error; | |
3761 | ||
3762 | error = netdev_get_etheraddr(port->netdev, ea); | |
064af421 BP |
3763 | if (!error) { |
3764 | return eth_addr_to_uint64(ea); | |
3765 | } | |
fbfa2911 BP |
3766 | VLOG_WARN("%s: could not get MAC address for %s (%s)", |
3767 | ofproto->name, netdev_get_name(port->netdev), | |
3768 | strerror(error)); | |
064af421 | 3769 | } |
fa60c019 | 3770 | return ofproto->fallback_dpid; |
064af421 BP |
3771 | } |
3772 | ||
3773 | static uint64_t | |
3774 | pick_fallback_dpid(void) | |
3775 | { | |
3776 | uint8_t ea[ETH_ADDR_LEN]; | |
70150daf | 3777 | eth_addr_nicira_random(ea); |
064af421 BP |
3778 | return eth_addr_to_uint64(ea); |
3779 | } | |
3780 | \f | |
254750ce BP |
3781 | /* Table overflow policy. */ |
3782 | ||
3783 | /* Chooses and returns a rule to evict from 'table'. Returns NULL if the table | |
3784 | * is not configured to evict rules or if the table contains no evictable | |
3785 | * rules. (Rules with 'evictable' set to false or with no timeouts are not | |
3786 | * evictable.) */ | |
3787 | static struct rule * | |
3788 | choose_rule_to_evict(struct oftable *table) | |
3789 | { | |
3790 | struct eviction_group *evg; | |
3791 | ||
3792 | if (!table->eviction_fields) { | |
3793 | return NULL; | |
3794 | } | |
3795 | ||
3796 | /* In the common case, the outer and inner loops here will each be entered | |
3797 | * exactly once: | |
3798 | * | |
3799 | * - The inner loop normally "return"s in its first iteration. If the | |
3800 | * eviction group has any evictable rules, then it always returns in | |
3801 | * some iteration. | |
3802 | * | |
3803 | * - The outer loop only iterates more than once if the largest eviction | |
3804 | * group has no evictable rules. | |
3805 | * | |
3806 | * - The outer loop can exit only if table's 'max_flows' is all filled up | |
3807 | * by unevictable rules'. */ | |
3808 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { | |
3809 | struct rule *rule; | |
3810 | ||
3811 | HEAP_FOR_EACH (rule, evg_node, &evg->rules) { | |
3812 | if (rule->evictable) { | |
3813 | return rule; | |
3814 | } | |
3815 | } | |
3816 | } | |
3817 | ||
3818 | return NULL; | |
3819 | } | |
3820 | ||
3821 | /* Searches 'ofproto' for tables that have more flows than their configured | |
3822 | * maximum and that have flow eviction enabled, and evicts as many flows as | |
3823 | * necessary and currently feasible from them. | |
3824 | * | |
3825 | * This triggers only when an OpenFlow table has N flows in it and then the | |
3826 | * client configures a maximum number of flows less than N. */ | |
3827 | static void | |
3828 | ofproto_evict(struct ofproto *ofproto) | |
3829 | { | |
3830 | struct ofopgroup *group; | |
3831 | struct oftable *table; | |
3832 | ||
3833 | group = ofopgroup_create_unattached(ofproto); | |
3834 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
3835 | while (classifier_count(&table->cls) > table->max_flows | |
3836 | && table->eviction_fields) { | |
3837 | struct rule *rule; | |
3838 | ||
3839 | rule = choose_rule_to_evict(table); | |
3840 | if (!rule || rule->pending) { | |
3841 | break; | |
3842 | } | |
3843 | ||
3844 | ofoperation_create(group, rule, OFOPERATION_DELETE); | |
3845 | oftable_remove_rule(rule); | |
3846 | ofproto->ofproto_class->rule_destruct(rule); | |
3847 | } | |
3848 | } | |
3849 | ofopgroup_submit(group); | |
3850 | } | |
3851 | \f | |
3852 | /* Eviction groups. */ | |
3853 | ||
3854 | /* Returns the priority to use for an eviction_group that contains 'n_rules' | |
3855 | * rules. The priority contains low-order random bits to ensure that eviction | |
3856 | * groups with the same number of rules are prioritized randomly. */ | |
3857 | static uint32_t | |
3858 | eviction_group_priority(size_t n_rules) | |
3859 | { | |
3860 | uint16_t size = MIN(UINT16_MAX, n_rules); | |
3861 | return (size << 16) | random_uint16(); | |
3862 | } | |
3863 | ||
3864 | /* Updates 'evg', an eviction_group within 'table', following a change that | |
3865 | * adds or removes rules in 'evg'. */ | |
3866 | static void | |
3867 | eviction_group_resized(struct oftable *table, struct eviction_group *evg) | |
3868 | { | |
3869 | heap_change(&table->eviction_groups_by_size, &evg->size_node, | |
3870 | eviction_group_priority(heap_count(&evg->rules))); | |
3871 | } | |
3872 | ||
3873 | /* Destroys 'evg', an eviction_group within 'table': | |
3874 | * | |
3875 | * - Removes all the rules, if any, from 'evg'. (It doesn't destroy the | |
3876 | * rules themselves, just removes them from the eviction group.) | |
3877 | * | |
3878 | * - Removes 'evg' from 'table'. | |
3879 | * | |
3880 | * - Frees 'evg'. */ | |
3881 | static void | |
3882 | eviction_group_destroy(struct oftable *table, struct eviction_group *evg) | |
3883 | { | |
3884 | while (!heap_is_empty(&evg->rules)) { | |
3885 | struct rule *rule; | |
3886 | ||
3887 | rule = CONTAINER_OF(heap_pop(&evg->rules), struct rule, evg_node); | |
3888 | rule->eviction_group = NULL; | |
3889 | } | |
3890 | hmap_remove(&table->eviction_groups_by_id, &evg->id_node); | |
3891 | heap_remove(&table->eviction_groups_by_size, &evg->size_node); | |
3892 | heap_destroy(&evg->rules); | |
3893 | free(evg); | |
3894 | } | |
3895 | ||
3896 | /* Removes 'rule' from its eviction group, if any. */ | |
3897 | static void | |
3898 | eviction_group_remove_rule(struct rule *rule) | |
3899 | { | |
3900 | if (rule->eviction_group) { | |
3901 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
3902 | struct eviction_group *evg = rule->eviction_group; | |
3903 | ||
3904 | rule->eviction_group = NULL; | |
3905 | heap_remove(&evg->rules, &rule->evg_node); | |
3906 | if (heap_is_empty(&evg->rules)) { | |
3907 | eviction_group_destroy(table, evg); | |
3908 | } else { | |
3909 | eviction_group_resized(table, evg); | |
3910 | } | |
3911 | } | |
3912 | } | |
3913 | ||
3914 | /* Hashes the 'rule''s values for the eviction_fields of 'rule''s table, and | |
3915 | * returns the hash value. */ | |
3916 | static uint32_t | |
3917 | eviction_group_hash_rule(struct rule *rule) | |
3918 | { | |
3919 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
3920 | const struct mf_subfield *sf; | |
3921 | uint32_t hash; | |
3922 | ||
3923 | hash = table->eviction_group_id_basis; | |
3924 | for (sf = table->eviction_fields; | |
3925 | sf < &table->eviction_fields[table->n_eviction_fields]; | |
3926 | sf++) | |
3927 | { | |
3928 | if (mf_are_prereqs_ok(sf->field, &rule->cr.flow)) { | |
3929 | union mf_value value; | |
3930 | ||
3931 | mf_get_value(sf->field, &rule->cr.flow, &value); | |
3932 | if (sf->ofs) { | |
3933 | bitwise_zero(&value, sf->field->n_bytes, 0, sf->ofs); | |
3934 | } | |
3935 | if (sf->ofs + sf->n_bits < sf->field->n_bytes * 8) { | |
3936 | unsigned int start = sf->ofs + sf->n_bits; | |
3937 | bitwise_zero(&value, sf->field->n_bytes, start, | |
3938 | sf->field->n_bytes * 8 - start); | |
3939 | } | |
3940 | hash = hash_bytes(&value, sf->field->n_bytes, hash); | |
3941 | } else { | |
3942 | hash = hash_int(hash, 0); | |
3943 | } | |
3944 | } | |
3945 | ||
3946 | return hash; | |
3947 | } | |
3948 | ||
3949 | /* Returns an eviction group within 'table' with the given 'id', creating one | |
3950 | * if necessary. */ | |
3951 | static struct eviction_group * | |
3952 | eviction_group_find(struct oftable *table, uint32_t id) | |
3953 | { | |
3954 | struct eviction_group *evg; | |
3955 | ||
3956 | HMAP_FOR_EACH_WITH_HASH (evg, id_node, id, &table->eviction_groups_by_id) { | |
3957 | return evg; | |
3958 | } | |
3959 | ||
3960 | evg = xmalloc(sizeof *evg); | |
3961 | hmap_insert(&table->eviction_groups_by_id, &evg->id_node, id); | |
3962 | heap_insert(&table->eviction_groups_by_size, &evg->size_node, | |
3963 | eviction_group_priority(0)); | |
3964 | heap_init(&evg->rules); | |
3965 | ||
3966 | return evg; | |
3967 | } | |
3968 | ||
3969 | /* Returns an eviction priority for 'rule'. The return value should be | |
3970 | * interpreted so that higher priorities make a rule more attractive candidates | |
3971 | * for eviction. */ | |
3972 | static uint32_t | |
3973 | rule_eviction_priority(struct rule *rule) | |
3974 | { | |
3975 | long long int hard_expiration; | |
3976 | long long int idle_expiration; | |
3977 | long long int expiration; | |
3978 | uint32_t expiration_offset; | |
3979 | ||
3980 | /* Calculate time of expiration. */ | |
3981 | hard_expiration = (rule->hard_timeout | |
3982 | ? rule->modified + rule->hard_timeout * 1000 | |
3983 | : LLONG_MAX); | |
3984 | idle_expiration = (rule->idle_timeout | |
3985 | ? rule->used + rule->idle_timeout * 1000 | |
3986 | : LLONG_MAX); | |
3987 | expiration = MIN(hard_expiration, idle_expiration); | |
3988 | if (expiration == LLONG_MAX) { | |
3989 | return 0; | |
3990 | } | |
3991 | ||
3992 | /* Calculate the time of expiration as a number of (approximate) seconds | |
3993 | * after program startup. | |
3994 | * | |
3995 | * This should work OK for program runs that last UINT32_MAX seconds or | |
3996 | * less. Therefore, please restart OVS at least once every 136 years. */ | |
3997 | expiration_offset = (expiration >> 10) - (time_boot_msec() >> 10); | |
3998 | ||
3999 | /* Invert the expiration offset because we're using a max-heap. */ | |
4000 | return UINT32_MAX - expiration_offset; | |
4001 | } | |
4002 | ||
4003 | /* Adds 'rule' to an appropriate eviction group for its oftable's | |
4004 | * configuration. Does nothing if 'rule''s oftable doesn't have eviction | |
4005 | * enabled, or if 'rule' is a permanent rule (one that will never expire on its | |
4006 | * own). | |
4007 | * | |
4008 | * The caller must ensure that 'rule' is not already in an eviction group. */ | |
4009 | static void | |
4010 | eviction_group_add_rule(struct rule *rule) | |
4011 | { | |
4012 | struct ofproto *ofproto = rule->ofproto; | |
4013 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
4014 | ||
4015 | if (table->eviction_fields | |
4016 | && (rule->hard_timeout || rule->idle_timeout)) { | |
4017 | struct eviction_group *evg; | |
4018 | ||
4019 | evg = eviction_group_find(table, eviction_group_hash_rule(rule)); | |
4020 | ||
4021 | rule->eviction_group = evg; | |
4022 | heap_insert(&evg->rules, &rule->evg_node, | |
4023 | rule_eviction_priority(rule)); | |
4024 | eviction_group_resized(table, evg); | |
4025 | } | |
4026 | } | |
4027 | \f | |
d0918789 BP |
4028 | /* oftables. */ |
4029 | ||
4030 | /* Initializes 'table'. */ | |
4031 | static void | |
4032 | oftable_init(struct oftable *table) | |
4033 | { | |
5c67e4af | 4034 | memset(table, 0, sizeof *table); |
d0918789 | 4035 | classifier_init(&table->cls); |
ec1c5c7e | 4036 | table->max_flows = UINT_MAX; |
d0918789 BP |
4037 | } |
4038 | ||
254750ce | 4039 | /* Destroys 'table', including its classifier and eviction groups. |
d0918789 BP |
4040 | * |
4041 | * The caller is responsible for freeing 'table' itself. */ | |
4042 | static void | |
4043 | oftable_destroy(struct oftable *table) | |
4044 | { | |
4045 | assert(classifier_is_empty(&table->cls)); | |
254750ce | 4046 | oftable_disable_eviction(table); |
d0918789 | 4047 | classifier_destroy(&table->cls); |
254750ce BP |
4048 | free(table->name); |
4049 | } | |
4050 | ||
4051 | /* Changes the name of 'table' to 'name'. If 'name' is NULL or the empty | |
4052 | * string, then 'table' will use its default name. | |
4053 | * | |
4054 | * This only affects the name exposed for a table exposed through the OpenFlow | |
4055 | * OFPST_TABLE (as printed by "ovs-ofctl dump-tables"). */ | |
4056 | static void | |
4057 | oftable_set_name(struct oftable *table, const char *name) | |
4058 | { | |
4059 | if (name && name[0]) { | |
4060 | int len = strnlen(name, OFP_MAX_TABLE_NAME_LEN); | |
4061 | if (!table->name || strncmp(name, table->name, len)) { | |
4062 | free(table->name); | |
4063 | table->name = xmemdup0(name, len); | |
4064 | } | |
4065 | } else { | |
4066 | free(table->name); | |
4067 | table->name = NULL; | |
4068 | } | |
4069 | } | |
4070 | ||
4071 | /* oftables support a choice of two policies when adding a rule would cause the | |
4072 | * number of flows in the table to exceed the configured maximum number: either | |
4073 | * they can refuse to add the new flow or they can evict some existing flow. | |
4074 | * This function configures the former policy on 'table'. */ | |
4075 | static void | |
4076 | oftable_disable_eviction(struct oftable *table) | |
4077 | { | |
4078 | if (table->eviction_fields) { | |
4079 | struct eviction_group *evg, *next; | |
4080 | ||
4081 | HMAP_FOR_EACH_SAFE (evg, next, id_node, | |
4082 | &table->eviction_groups_by_id) { | |
4083 | eviction_group_destroy(table, evg); | |
4084 | } | |
4085 | hmap_destroy(&table->eviction_groups_by_id); | |
4086 | heap_destroy(&table->eviction_groups_by_size); | |
4087 | ||
4088 | free(table->eviction_fields); | |
4089 | table->eviction_fields = NULL; | |
4090 | table->n_eviction_fields = 0; | |
4091 | } | |
4092 | } | |
4093 | ||
4094 | /* oftables support a choice of two policies when adding a rule would cause the | |
4095 | * number of flows in the table to exceed the configured maximum number: either | |
4096 | * they can refuse to add the new flow or they can evict some existing flow. | |
4097 | * This function configures the latter policy on 'table', with fairness based | |
4098 | * on the values of the 'n_fields' fields specified in 'fields'. (Specifying | |
4099 | * 'n_fields' as 0 disables fairness.) */ | |
4100 | static void | |
4101 | oftable_enable_eviction(struct oftable *table, | |
4102 | const struct mf_subfield *fields, size_t n_fields) | |
4103 | { | |
4104 | struct cls_cursor cursor; | |
4105 | struct rule *rule; | |
4106 | ||
4107 | if (table->eviction_fields | |
4108 | && n_fields == table->n_eviction_fields | |
4109 | && (!n_fields | |
4110 | || !memcmp(fields, table->eviction_fields, | |
4111 | n_fields * sizeof *fields))) { | |
4112 | /* No change. */ | |
4113 | return; | |
4114 | } | |
4115 | ||
4116 | oftable_disable_eviction(table); | |
4117 | ||
4118 | table->n_eviction_fields = n_fields; | |
4119 | table->eviction_fields = xmemdup(fields, n_fields * sizeof *fields); | |
4120 | ||
4121 | table->eviction_group_id_basis = random_uint32(); | |
4122 | hmap_init(&table->eviction_groups_by_id); | |
4123 | heap_init(&table->eviction_groups_by_size); | |
4124 | ||
4125 | cls_cursor_init(&cursor, &table->cls, NULL); | |
4126 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { | |
4127 | eviction_group_add_rule(rule); | |
4128 | } | |
d0918789 BP |
4129 | } |
4130 | ||
4131 | /* Removes 'rule' from the oftable that contains it. */ | |
4132 | static void | |
4133 | oftable_remove_rule(struct rule *rule) | |
4134 | { | |
4135 | struct ofproto *ofproto = rule->ofproto; | |
4136 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
4137 | ||
4138 | classifier_remove(&table->cls, &rule->cr); | |
254750ce | 4139 | eviction_group_remove_rule(rule); |
d0918789 BP |
4140 | } |
4141 | ||
4142 | /* Inserts 'rule' into its oftable. Removes any existing rule from 'rule''s | |
4143 | * oftable that has an identical cls_rule. Returns the rule that was removed, | |
4144 | * if any, and otherwise NULL. */ | |
4145 | static struct rule * | |
4146 | oftable_replace_rule(struct rule *rule) | |
4147 | { | |
4148 | struct ofproto *ofproto = rule->ofproto; | |
4149 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
254750ce | 4150 | struct rule *victim; |
d0918789 | 4151 | |
254750ce BP |
4152 | victim = rule_from_cls_rule(classifier_replace(&table->cls, &rule->cr)); |
4153 | if (victim) { | |
4154 | eviction_group_remove_rule(victim); | |
4155 | } | |
4156 | eviction_group_add_rule(rule); | |
4157 | return victim; | |
d0918789 BP |
4158 | } |
4159 | ||
4160 | /* Removes 'old' from its oftable then, if 'new' is nonnull, inserts 'new'. */ | |
4161 | static void | |
4162 | oftable_substitute_rule(struct rule *old, struct rule *new) | |
4163 | { | |
4164 | if (new) { | |
4165 | oftable_replace_rule(new); | |
4166 | } else { | |
4167 | oftable_remove_rule(old); | |
4168 | } | |
4169 | } | |
4170 | \f | |
abe529af | 4171 | /* unixctl commands. */ |
7aa697dd | 4172 | |
abe529af | 4173 | struct ofproto * |
2ac6bedd | 4174 | ofproto_lookup(const char *name) |
7aa697dd | 4175 | { |
2ac6bedd | 4176 | struct ofproto *ofproto; |
7aa697dd | 4177 | |
2ac6bedd BP |
4178 | HMAP_FOR_EACH_WITH_HASH (ofproto, hmap_node, hash_string(name, 0), |
4179 | &all_ofprotos) { | |
4180 | if (!strcmp(ofproto->name, name)) { | |
4181 | return ofproto; | |
4182 | } | |
7aa697dd | 4183 | } |
2ac6bedd | 4184 | return NULL; |
7aa697dd BP |
4185 | } |
4186 | ||
4187 | static void | |
0e15264f BP |
4188 | ofproto_unixctl_list(struct unixctl_conn *conn, int argc OVS_UNUSED, |
4189 | const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED) | |
7aa697dd | 4190 | { |
7aa697dd | 4191 | struct ofproto *ofproto; |
7aa697dd | 4192 | struct ds results; |
7aa697dd | 4193 | |
7aa697dd | 4194 | ds_init(&results); |
2ac6bedd BP |
4195 | HMAP_FOR_EACH (ofproto, hmap_node, &all_ofprotos) { |
4196 | ds_put_format(&results, "%s\n", ofproto->name); | |
7aa697dd | 4197 | } |
bde9f75d | 4198 | unixctl_command_reply(conn, ds_cstr(&results)); |
7aa697dd | 4199 | ds_destroy(&results); |
7aa697dd BP |
4200 | } |
4201 | ||
4202 | static void | |
4203 | ofproto_unixctl_init(void) | |
4204 | { | |
4205 | static bool registered; | |
4206 | if (registered) { | |
4207 | return; | |
4208 | } | |
4209 | registered = true; | |
4210 | ||
0e15264f BP |
4211 | unixctl_command_register("ofproto/list", "", 0, 0, |
4212 | ofproto_unixctl_list, NULL); | |
064af421 | 4213 | } |
52a90c29 BP |
4214 | \f |
4215 | /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.) | |
4216 | * | |
4217 | * This is deprecated. It is only for compatibility with broken device drivers | |
4218 | * in old versions of Linux that do not properly support VLANs when VLAN | |
4219 | * devices are not used. When broken device drivers are no longer in | |
4220 | * widespread use, we will delete these interfaces. */ | |
4221 | ||
4222 | /* Sets a 1-bit in the 4096-bit 'vlan_bitmap' for each VLAN ID that is matched | |
4223 | * (exactly) by an OpenFlow rule in 'ofproto'. */ | |
4224 | void | |
4225 | ofproto_get_vlan_usage(struct ofproto *ofproto, unsigned long int *vlan_bitmap) | |
4226 | { | |
d0918789 | 4227 | const struct oftable *oftable; |
52a90c29 BP |
4228 | |
4229 | free(ofproto->vlan_bitmap); | |
4230 | ofproto->vlan_bitmap = bitmap_allocate(4096); | |
4231 | ofproto->vlans_changed = false; | |
4232 | ||
d0918789 | 4233 | OFPROTO_FOR_EACH_TABLE (oftable, ofproto) { |
52a90c29 BP |
4234 | const struct cls_table *table; |
4235 | ||
d0918789 | 4236 | HMAP_FOR_EACH (table, hmap_node, &oftable->cls.tables) { |
9075907c BP |
4237 | if ((table->wc.vlan_tci_mask & htons(VLAN_VID_MASK)) |
4238 | == htons(VLAN_VID_MASK)) { | |
52a90c29 BP |
4239 | const struct cls_rule *rule; |
4240 | ||
4241 | HMAP_FOR_EACH (rule, hmap_node, &table->rules) { | |
4242 | uint16_t vid = vlan_tci_to_vid(rule->flow.vlan_tci); | |
4243 | bitmap_set1(vlan_bitmap, vid); | |
4244 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
4245 | } | |
4246 | } | |
4247 | } | |
4248 | } | |
4249 | } | |
4250 | ||
4251 | /* Returns true if new VLANs have come into use by the flow table since the | |
4252 | * last call to ofproto_get_vlan_usage(). | |
4253 | * | |
4254 | * We don't track when old VLANs stop being used. */ | |
4255 | bool | |
4256 | ofproto_has_vlan_usage_changed(const struct ofproto *ofproto) | |
4257 | { | |
4258 | return ofproto->vlans_changed; | |
4259 | } | |
4260 | ||
4261 | /* Configures a VLAN splinter binding between the ports identified by OpenFlow | |
4262 | * port numbers 'vlandev_ofp_port' and 'realdev_ofp_port'. If | |
4263 | * 'realdev_ofp_port' is nonzero, then the VLAN device is enslaved to the real | |
4264 | * device as a VLAN splinter for VLAN ID 'vid'. If 'realdev_ofp_port' is zero, | |
4265 | * then the VLAN device is un-enslaved. */ | |
4266 | int | |
4267 | ofproto_port_set_realdev(struct ofproto *ofproto, uint16_t vlandev_ofp_port, | |
4268 | uint16_t realdev_ofp_port, int vid) | |
4269 | { | |
4270 | struct ofport *ofport; | |
4271 | int error; | |
4272 | ||
4273 | assert(vlandev_ofp_port != realdev_ofp_port); | |
4274 | ||
4275 | ofport = ofproto_get_port(ofproto, vlandev_ofp_port); | |
4276 | if (!ofport) { | |
4277 | VLOG_WARN("%s: cannot set realdev on nonexistent port %"PRIu16, | |
4278 | ofproto->name, vlandev_ofp_port); | |
4279 | return EINVAL; | |
4280 | } | |
4281 | ||
4282 | if (!ofproto->ofproto_class->set_realdev) { | |
4283 | if (!vlandev_ofp_port) { | |
4284 | return 0; | |
4285 | } | |
4286 | VLOG_WARN("%s: vlan splinters not supported", ofproto->name); | |
4287 | return EOPNOTSUPP; | |
4288 | } | |
4289 | ||
4290 | error = ofproto->ofproto_class->set_realdev(ofport, realdev_ofp_port, vid); | |
4291 | if (error) { | |
4292 | VLOG_WARN("%s: setting realdev on port %"PRIu16" (%s) failed (%s)", | |
4293 | ofproto->name, vlandev_ofp_port, | |
4294 | netdev_get_name(ofport->netdev), strerror(error)); | |
4295 | } | |
4296 | return error; | |
4297 | } |