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064af421 | 1 | /* |
db5ce514 | 2 | * Copyright (c) 2009, 2010, 2011 Nicira Networks. |
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> | |
10a24935 | 24 | #include "byte-order.h" |
064af421 | 25 | #include "classifier.h" |
19a87e36 | 26 | #include "connmgr.h" |
064af421 | 27 | #include "coverage.h" |
4f2cad2c | 28 | #include "dynamic-string.h" |
ca0f572c BP |
29 | #include "hash.h" |
30 | #include "hmap.h" | |
064af421 | 31 | #include "netdev.h" |
09246b99 | 32 | #include "nx-match.h" |
064af421 | 33 | #include "ofp-print.h" |
fa37b408 | 34 | #include "ofp-util.h" |
064af421 BP |
35 | #include "ofpbuf.h" |
36 | #include "openflow/nicira-ext.h" | |
37 | #include "openflow/openflow.h" | |
064af421 BP |
38 | #include "packets.h" |
39 | #include "pinsched.h" | |
40 | #include "pktbuf.h" | |
41 | #include "poll-loop.h" | |
d08a2e92 | 42 | #include "private.h" |
064af421 | 43 | #include "shash.h" |
b3c01ed3 | 44 | #include "sset.h" |
064af421 | 45 | #include "timeval.h" |
c4617b3c | 46 | #include "unaligned.h" |
4f2cad2c | 47 | #include "unixctl.h" |
5136ce49 | 48 | #include "vlog.h" |
064af421 | 49 | |
d98e6007 | 50 | VLOG_DEFINE_THIS_MODULE(ofproto); |
064af421 | 51 | |
d76f09ea | 52 | COVERAGE_DEFINE(ofproto_error); |
d76f09ea BP |
53 | COVERAGE_DEFINE(ofproto_flows_req); |
54 | COVERAGE_DEFINE(ofproto_flush); | |
d76f09ea | 55 | COVERAGE_DEFINE(ofproto_no_packet_in); |
d76f09ea BP |
56 | COVERAGE_DEFINE(ofproto_packet_out); |
57 | COVERAGE_DEFINE(ofproto_queue_req); | |
58 | COVERAGE_DEFINE(ofproto_recv_openflow); | |
59 | COVERAGE_DEFINE(ofproto_reinit_ports); | |
d76f09ea BP |
60 | COVERAGE_DEFINE(ofproto_uninstallable); |
61 | COVERAGE_DEFINE(ofproto_update_port); | |
62 | ||
abe529af BP |
63 | static void ofport_destroy__(struct ofport *); |
64 | static void ofport_destroy(struct ofport *); | |
878ae780 | 65 | |
0ab6decf BP |
66 | static int rule_create(struct ofproto *, |
67 | const struct cls_rule *, uint8_t table_id, | |
abe529af BP |
68 | const union ofp_action *, size_t n_actions, |
69 | uint16_t idle_timeout, uint16_t hard_timeout, | |
70 | ovs_be64 flow_cookie, bool send_flow_removed, | |
71 | struct rule **rulep); | |
f29152ca | 72 | |
abe529af BP |
73 | static uint64_t pick_datapath_id(const struct ofproto *); |
74 | static uint64_t pick_fallback_dpid(void); | |
064af421 | 75 | |
abe529af BP |
76 | static void ofproto_destroy__(struct ofproto *); |
77 | static void ofproto_flush_flows__(struct ofproto *); | |
064af421 | 78 | |
abe529af BP |
79 | static void ofproto_rule_destroy__(struct rule *); |
80 | static void ofproto_rule_send_removed(struct rule *, uint8_t reason); | |
f29152ca | 81 | |
abe529af | 82 | static void handle_openflow(struct ofconn *, struct ofpbuf *); |
f29152ca | 83 | |
abe529af BP |
84 | static void update_port(struct ofproto *, const char *devname); |
85 | static int init_ports(struct ofproto *); | |
86 | static void reinit_ports(struct ofproto *); | |
f29152ca | 87 | |
abe529af | 88 | static void ofproto_unixctl_init(void); |
f29152ca | 89 | |
abe529af BP |
90 | /* All registered ofproto classes, in probe order. */ |
91 | static const struct ofproto_class **ofproto_classes; | |
92 | static size_t n_ofproto_classes; | |
93 | static size_t allocated_ofproto_classes; | |
7aa697dd | 94 | |
f797957a | 95 | /* Map from datapath name to struct ofproto, for use by unixctl commands. */ |
abe529af | 96 | static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos); |
ebe482fd | 97 | |
abe529af | 98 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
f29152ca | 99 | |
abe529af BP |
100 | static void |
101 | ofproto_initialize(void) | |
102 | { | |
103 | static bool inited; | |
f29152ca | 104 | |
abe529af BP |
105 | if (!inited) { |
106 | inited = true; | |
107 | ofproto_class_register(&ofproto_dpif_class); | |
108 | } | |
109 | } | |
f29152ca | 110 | |
abe529af BP |
111 | /* 'type' should be a normalized datapath type, as returned by |
112 | * ofproto_normalize_type(). Returns the corresponding ofproto_class | |
113 | * structure, or a null pointer if there is none registered for 'type'. */ | |
114 | static const struct ofproto_class * | |
115 | ofproto_class_find__(const char *type) | |
116 | { | |
117 | size_t i; | |
f29152ca | 118 | |
abe529af BP |
119 | ofproto_initialize(); |
120 | for (i = 0; i < n_ofproto_classes; i++) { | |
121 | const struct ofproto_class *class = ofproto_classes[i]; | |
122 | struct sset types; | |
123 | bool found; | |
064af421 | 124 | |
abe529af BP |
125 | sset_init(&types); |
126 | class->enumerate_types(&types); | |
127 | found = sset_contains(&types, type); | |
128 | sset_destroy(&types); | |
bcf84111 | 129 | |
abe529af BP |
130 | if (found) { |
131 | return class; | |
132 | } | |
133 | } | |
134 | VLOG_WARN("unknown datapath type %s", type); | |
135 | return NULL; | |
136 | } | |
064af421 | 137 | |
abe529af BP |
138 | /* Registers a new ofproto class. After successful registration, new ofprotos |
139 | * of that type can be created using ofproto_create(). */ | |
140 | int | |
141 | ofproto_class_register(const struct ofproto_class *new_class) | |
142 | { | |
143 | size_t i; | |
7aa697dd | 144 | |
abe529af BP |
145 | for (i = 0; i < n_ofproto_classes; i++) { |
146 | if (ofproto_classes[i] == new_class) { | |
147 | return EEXIST; | |
148 | } | |
149 | } | |
064af421 | 150 | |
abe529af BP |
151 | if (n_ofproto_classes >= allocated_ofproto_classes) { |
152 | ofproto_classes = x2nrealloc(ofproto_classes, | |
153 | &allocated_ofproto_classes, | |
154 | sizeof *ofproto_classes); | |
155 | } | |
156 | ofproto_classes[n_ofproto_classes++] = new_class; | |
157 | return 0; | |
158 | } | |
064af421 | 159 | |
abe529af BP |
160 | /* Unregisters a datapath provider. 'type' must have been previously |
161 | * registered and not currently be in use by any ofprotos. After | |
162 | * unregistration new datapaths of that type cannot be opened using | |
163 | * ofproto_create(). */ | |
164 | int | |
165 | ofproto_class_unregister(const struct ofproto_class *class) | |
166 | { | |
167 | size_t i; | |
76ce9432 | 168 | |
abe529af BP |
169 | for (i = 0; i < n_ofproto_classes; i++) { |
170 | if (ofproto_classes[i] == class) { | |
171 | for (i++; i < n_ofproto_classes; i++) { | |
172 | ofproto_classes[i - 1] = ofproto_classes[i]; | |
173 | } | |
174 | n_ofproto_classes--; | |
175 | return 0; | |
176 | } | |
177 | } | |
178 | VLOG_WARN("attempted to unregister an ofproto class that is not " | |
179 | "registered"); | |
180 | return EAFNOSUPPORT; | |
181 | } | |
4a4cdb3b | 182 | |
f79e673f BP |
183 | /* Clears 'types' and enumerates all registered ofproto types into it. The |
184 | * caller must first initialize the sset. */ | |
185 | void | |
186 | ofproto_enumerate_types(struct sset *types) | |
187 | { | |
abe529af | 188 | size_t i; |
064af421 | 189 | |
abe529af BP |
190 | ofproto_initialize(); |
191 | for (i = 0; i < n_ofproto_classes; i++) { | |
192 | ofproto_classes[i]->enumerate_types(types); | |
193 | } | |
f79e673f | 194 | } |
064af421 | 195 | |
f79e673f BP |
196 | /* Returns the fully spelled out name for the given ofproto 'type'. |
197 | * | |
198 | * Normalized type string can be compared with strcmp(). Unnormalized type | |
199 | * string might be the same even if they have different spellings. */ | |
200 | const char * | |
201 | ofproto_normalize_type(const char *type) | |
202 | { | |
abe529af | 203 | return type && type[0] ? type : "system"; |
f79e673f | 204 | } |
064af421 | 205 | |
f79e673f BP |
206 | /* Clears 'names' and enumerates the names of all known created ofprotos with |
207 | * the given 'type'. The caller must first initialize the sset. Returns 0 if | |
208 | * successful, otherwise a positive errno value. | |
209 | * | |
210 | * Some kinds of datapaths might not be practically enumerable. This is not | |
211 | * considered an error. */ | |
212 | int | |
213 | ofproto_enumerate_names(const char *type, struct sset *names) | |
214 | { | |
abe529af BP |
215 | const struct ofproto_class *class = ofproto_class_find__(type); |
216 | return class ? class->enumerate_names(type, names) : EAFNOSUPPORT; | |
217 | } | |
7aa697dd | 218 | |
064af421 | 219 | int |
abe529af | 220 | ofproto_create(const char *datapath_name, const char *datapath_type, |
064af421 BP |
221 | struct ofproto **ofprotop) |
222 | { | |
abe529af BP |
223 | const struct ofproto_class *class; |
224 | struct ofproto *ofproto; | |
064af421 BP |
225 | int error; |
226 | ||
227 | *ofprotop = NULL; | |
228 | ||
abe529af | 229 | ofproto_initialize(); |
7aa697dd BP |
230 | ofproto_unixctl_init(); |
231 | ||
abe529af BP |
232 | datapath_type = ofproto_normalize_type(datapath_type); |
233 | class = ofproto_class_find__(datapath_type); | |
234 | if (!class) { | |
235 | VLOG_WARN("could not create datapath %s of unknown type %s", | |
236 | datapath_name, datapath_type); | |
237 | return EAFNOSUPPORT; | |
064af421 BP |
238 | } |
239 | ||
abe529af BP |
240 | ofproto = class->alloc(); |
241 | if (!ofproto) { | |
242 | VLOG_ERR("failed to allocate datapath %s of type %s", | |
243 | datapath_name, datapath_type); | |
244 | return ENOMEM; | |
245 | } | |
246 | ||
247 | /* Initialize. */ | |
248 | memset(ofproto, 0, sizeof *ofproto); | |
249 | ofproto->ofproto_class = class; | |
250 | ofproto->name = xstrdup(datapath_name); | |
251 | ofproto->type = xstrdup(datapath_type); | |
252 | hmap_insert(&all_ofprotos, &ofproto->hmap_node, | |
253 | hash_string(ofproto->name, 0)); | |
254 | ofproto->datapath_id = 0; | |
255 | ofproto->fallback_dpid = pick_fallback_dpid(); | |
256 | ofproto->mfr_desc = xstrdup(DEFAULT_MFR_DESC); | |
257 | ofproto->hw_desc = xstrdup(DEFAULT_HW_DESC); | |
258 | ofproto->sw_desc = xstrdup(DEFAULT_SW_DESC); | |
259 | ofproto->serial_desc = xstrdup(DEFAULT_SERIAL_DESC); | |
260 | ofproto->dp_desc = xstrdup(DEFAULT_DP_DESC); | |
abe529af BP |
261 | hmap_init(&ofproto->ports); |
262 | shash_init(&ofproto->port_by_name); | |
6c1491fb BP |
263 | ofproto->tables = NULL; |
264 | ofproto->n_tables = 0; | |
abe529af BP |
265 | ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name); |
266 | ||
267 | error = ofproto->ofproto_class->construct(ofproto); | |
19a87e36 | 268 | if (error) { |
abe529af BP |
269 | VLOG_ERR("failed to open datapath %s: %s", |
270 | datapath_name, strerror(error)); | |
271 | ofproto_destroy__(ofproto); | |
19a87e36 BP |
272 | return error; |
273 | } | |
6c1491fb | 274 | assert(ofproto->n_tables > 0); |
19a87e36 | 275 | |
abe529af BP |
276 | ofproto->datapath_id = pick_datapath_id(ofproto); |
277 | VLOG_INFO("using datapath ID %016"PRIx64, ofproto->datapath_id); | |
278 | init_ports(ofproto); | |
7aa697dd | 279 | |
abe529af | 280 | *ofprotop = ofproto; |
064af421 BP |
281 | return 0; |
282 | } | |
283 | ||
284 | void | |
285 | ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id) | |
286 | { | |
287 | uint64_t old_dpid = p->datapath_id; | |
fa60c019 | 288 | p->datapath_id = datapath_id ? datapath_id : pick_datapath_id(p); |
064af421 | 289 | if (p->datapath_id != old_dpid) { |
b123cc3c | 290 | VLOG_INFO("datapath ID changed to %016"PRIx64, p->datapath_id); |
76ce9432 BP |
291 | |
292 | /* Force all active connections to reconnect, since there is no way to | |
293 | * notify a controller that the datapath ID has changed. */ | |
fa05809b | 294 | ofproto_reconnect_controllers(p); |
064af421 BP |
295 | } |
296 | } | |
297 | ||
76ce9432 BP |
298 | void |
299 | ofproto_set_controllers(struct ofproto *p, | |
300 | const struct ofproto_controller *controllers, | |
301 | size_t n_controllers) | |
302 | { | |
19a87e36 | 303 | connmgr_set_controllers(p->connmgr, controllers, n_controllers); |
064af421 BP |
304 | } |
305 | ||
31681a5d JP |
306 | void |
307 | ofproto_set_fail_mode(struct ofproto *p, enum ofproto_fail_mode fail_mode) | |
308 | { | |
19a87e36 | 309 | connmgr_set_fail_mode(p->connmgr, fail_mode); |
31681a5d JP |
310 | } |
311 | ||
fa05809b BP |
312 | /* Drops the connections between 'ofproto' and all of its controllers, forcing |
313 | * them to reconnect. */ | |
314 | void | |
315 | ofproto_reconnect_controllers(struct ofproto *ofproto) | |
316 | { | |
19a87e36 | 317 | connmgr_reconnect(ofproto->connmgr); |
917e50e1 BP |
318 | } |
319 | ||
320 | /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s | |
321 | * in-band control should guarantee access, in the same way that in-band | |
322 | * control guarantees access to OpenFlow controllers. */ | |
323 | void | |
324 | ofproto_set_extra_in_band_remotes(struct ofproto *ofproto, | |
325 | const struct sockaddr_in *extras, size_t n) | |
326 | { | |
19a87e36 | 327 | connmgr_set_extra_in_band_remotes(ofproto->connmgr, extras, n); |
917e50e1 BP |
328 | } |
329 | ||
b1da6250 BP |
330 | /* Sets the OpenFlow queue used by flows set up by in-band control on |
331 | * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control | |
332 | * flows will use the default queue. */ | |
333 | void | |
334 | ofproto_set_in_band_queue(struct ofproto *ofproto, int queue_id) | |
335 | { | |
19a87e36 | 336 | connmgr_set_in_band_queue(ofproto->connmgr, queue_id); |
b1da6250 BP |
337 | } |
338 | ||
064af421 BP |
339 | void |
340 | ofproto_set_desc(struct ofproto *p, | |
5a719c38 JP |
341 | const char *mfr_desc, const char *hw_desc, |
342 | const char *sw_desc, const char *serial_desc, | |
8abc4ed7 | 343 | const char *dp_desc) |
064af421 | 344 | { |
5a719c38 JP |
345 | struct ofp_desc_stats *ods; |
346 | ||
347 | if (mfr_desc) { | |
348 | if (strlen(mfr_desc) >= sizeof ods->mfr_desc) { | |
349 | VLOG_WARN("truncating mfr_desc, must be less than %zu characters", | |
350 | sizeof ods->mfr_desc); | |
351 | } | |
352 | free(p->mfr_desc); | |
353 | p->mfr_desc = xstrdup(mfr_desc); | |
064af421 | 354 | } |
5a719c38 JP |
355 | if (hw_desc) { |
356 | if (strlen(hw_desc) >= sizeof ods->hw_desc) { | |
357 | VLOG_WARN("truncating hw_desc, must be less than %zu characters", | |
358 | sizeof ods->hw_desc); | |
359 | } | |
360 | free(p->hw_desc); | |
361 | p->hw_desc = xstrdup(hw_desc); | |
064af421 | 362 | } |
5a719c38 JP |
363 | if (sw_desc) { |
364 | if (strlen(sw_desc) >= sizeof ods->sw_desc) { | |
365 | VLOG_WARN("truncating sw_desc, must be less than %zu characters", | |
366 | sizeof ods->sw_desc); | |
367 | } | |
368 | free(p->sw_desc); | |
369 | p->sw_desc = xstrdup(sw_desc); | |
370 | } | |
371 | if (serial_desc) { | |
372 | if (strlen(serial_desc) >= sizeof ods->serial_num) { | |
373 | VLOG_WARN("truncating serial_desc, must be less than %zu " | |
374 | "characters", | |
375 | sizeof ods->serial_num); | |
376 | } | |
377 | free(p->serial_desc); | |
378 | p->serial_desc = xstrdup(serial_desc); | |
064af421 | 379 | } |
8abc4ed7 | 380 | if (dp_desc) { |
5a719c38 JP |
381 | if (strlen(dp_desc) >= sizeof ods->dp_desc) { |
382 | VLOG_WARN("truncating dp_desc, must be less than %zu characters", | |
383 | sizeof ods->dp_desc); | |
384 | } | |
8abc4ed7 JP |
385 | free(p->dp_desc); |
386 | p->dp_desc = xstrdup(dp_desc); | |
387 | } | |
064af421 BP |
388 | } |
389 | ||
064af421 | 390 | int |
81e2083f | 391 | ofproto_set_snoops(struct ofproto *ofproto, const struct sset *snoops) |
064af421 | 392 | { |
19a87e36 | 393 | return connmgr_set_snoops(ofproto->connmgr, snoops); |
064af421 BP |
394 | } |
395 | ||
396 | int | |
0193b2af JG |
397 | ofproto_set_netflow(struct ofproto *ofproto, |
398 | const struct netflow_options *nf_options) | |
064af421 | 399 | { |
abe529af BP |
400 | if (nf_options && sset_is_empty(&nf_options->collectors)) { |
401 | nf_options = NULL; | |
402 | } | |
403 | ||
404 | if (ofproto->ofproto_class->set_netflow) { | |
405 | return ofproto->ofproto_class->set_netflow(ofproto, nf_options); | |
064af421 | 406 | } else { |
abe529af | 407 | return nf_options ? EOPNOTSUPP : 0; |
064af421 BP |
408 | } |
409 | } | |
410 | ||
abe529af | 411 | int |
72b06300 BP |
412 | ofproto_set_sflow(struct ofproto *ofproto, |
413 | const struct ofproto_sflow_options *oso) | |
414 | { | |
abe529af BP |
415 | if (oso && sset_is_empty(&oso->targets)) { |
416 | oso = NULL; | |
417 | } | |
72b06300 | 418 | |
abe529af BP |
419 | if (ofproto->ofproto_class->set_sflow) { |
420 | return ofproto->ofproto_class->set_sflow(ofproto, oso); | |
72b06300 | 421 | } else { |
abe529af | 422 | return oso ? EOPNOTSUPP : 0; |
72b06300 BP |
423 | } |
424 | } | |
e7934396 BP |
425 | \f |
426 | /* Connectivity Fault Management configuration. */ | |
427 | ||
892815f5 | 428 | /* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */ |
e7934396 | 429 | void |
892815f5 | 430 | ofproto_port_clear_cfm(struct ofproto *ofproto, uint16_t ofp_port) |
e7934396 | 431 | { |
abe529af BP |
432 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
433 | if (ofport && ofproto->ofproto_class->set_cfm) { | |
a5610457 | 434 | ofproto->ofproto_class->set_cfm(ofport, NULL); |
e7934396 BP |
435 | } |
436 | } | |
72b06300 | 437 | |
892815f5 | 438 | /* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes |
93b8df38 EJ |
439 | * basic configuration from the configuration members in 'cfm', and the remote |
440 | * maintenance point ID from remote_mpid. Ignores the statistics members of | |
441 | * 'cfm'. | |
e7934396 | 442 | * |
892815f5 | 443 | * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */ |
e7934396 | 444 | void |
892815f5 | 445 | ofproto_port_set_cfm(struct ofproto *ofproto, uint16_t ofp_port, |
a5610457 | 446 | const struct cfm_settings *s) |
e7934396 BP |
447 | { |
448 | struct ofport *ofport; | |
abe529af | 449 | int error; |
e7934396 | 450 | |
abe529af | 451 | ofport = ofproto_get_port(ofproto, ofp_port); |
e7934396 | 452 | if (!ofport) { |
892815f5 BP |
453 | VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16, |
454 | ofproto->name, ofp_port); | |
e7934396 BP |
455 | return; |
456 | } | |
457 | ||
93b8df38 EJ |
458 | /* XXX: For configuration simplicity, we only support one remote_mpid |
459 | * outside of the CFM module. It's not clear if this is the correct long | |
460 | * term solution or not. */ | |
abe529af | 461 | error = (ofproto->ofproto_class->set_cfm |
a5610457 | 462 | ? ofproto->ofproto_class->set_cfm(ofport, s) |
abe529af BP |
463 | : EOPNOTSUPP); |
464 | if (error) { | |
465 | VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed (%s)", | |
466 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
467 | strerror(error)); | |
e7934396 | 468 | } |
e7934396 | 469 | } |
e7934396 | 470 | |
fa066f01 BP |
471 | /* Checks the status of LACP negotiation for 'ofp_port' within ofproto. |
472 | * Returns 1 if LACP partner information for 'ofp_port' is up-to-date, | |
473 | * 0 if LACP partner information is not current (generally indicating a | |
474 | * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */ | |
475 | int | |
476 | ofproto_port_is_lacp_current(struct ofproto *ofproto, uint16_t ofp_port) | |
477 | { | |
abe529af BP |
478 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
479 | return (ofport && ofproto->ofproto_class->port_is_lacp_current | |
480 | ? ofproto->ofproto_class->port_is_lacp_current(ofport) | |
fa066f01 | 481 | : -1); |
e7934396 | 482 | } |
e7934396 | 483 | \f |
fa066f01 | 484 | /* Bundles. */ |
e7934396 | 485 | |
abe529af BP |
486 | /* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'. |
487 | * A bundle is the same concept as a Port in OVSDB, that is, it consists of one | |
488 | * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN | |
489 | * configuration plus, if there is more than one slave, a bonding | |
490 | * configuration. | |
491 | * | |
492 | * If 'aux' is already registered then this function updates its configuration | |
493 | * to 's'. Otherwise, this function registers a new bundle. | |
494 | * | |
495 | * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL | |
496 | * port. */ | |
497 | int | |
498 | ofproto_bundle_register(struct ofproto *ofproto, void *aux, | |
499 | const struct ofproto_bundle_settings *s) | |
fa066f01 | 500 | { |
abe529af BP |
501 | return (ofproto->ofproto_class->bundle_set |
502 | ? ofproto->ofproto_class->bundle_set(ofproto, aux, s) | |
503 | : EOPNOTSUPP); | |
fa066f01 BP |
504 | } |
505 | ||
abe529af BP |
506 | /* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'. |
507 | * If no such bundle has been registered, this has no effect. */ | |
508 | int | |
509 | ofproto_bundle_unregister(struct ofproto *ofproto, void *aux) | |
e7934396 | 510 | { |
abe529af | 511 | return ofproto_bundle_register(ofproto, aux, NULL); |
e7934396 | 512 | } |
fa066f01 | 513 | |
e7934396 | 514 | \f |
abe529af BP |
515 | /* Registers a mirror associated with client data pointer 'aux' in 'ofproto'. |
516 | * If 'aux' is already registered then this function updates its configuration | |
517 | * to 's'. Otherwise, this function registers a new mirror. | |
518 | * | |
519 | * Mirrors affect only the treatment of packets output to the OFPP_NORMAL | |
520 | * port. */ | |
521 | int | |
522 | ofproto_mirror_register(struct ofproto *ofproto, void *aux, | |
523 | const struct ofproto_mirror_settings *s) | |
064af421 | 524 | { |
abe529af BP |
525 | return (ofproto->ofproto_class->mirror_set |
526 | ? ofproto->ofproto_class->mirror_set(ofproto, aux, s) | |
527 | : EOPNOTSUPP); | |
064af421 BP |
528 | } |
529 | ||
abe529af BP |
530 | /* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'. |
531 | * If no mirror has been registered, this has no effect. */ | |
532 | int | |
533 | ofproto_mirror_unregister(struct ofproto *ofproto, void *aux) | |
064af421 | 534 | { |
abe529af | 535 | return ofproto_mirror_register(ofproto, aux, NULL); |
064af421 BP |
536 | } |
537 | ||
abe529af BP |
538 | /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on |
539 | * which all packets are flooded, instead of using MAC learning. If | |
540 | * 'flood_vlans' is NULL, then MAC learning applies to all VLANs. | |
541 | * | |
542 | * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL | |
543 | * port. */ | |
544 | int | |
545 | ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans) | |
abdfe474 | 546 | { |
abe529af BP |
547 | return (ofproto->ofproto_class->set_flood_vlans |
548 | ? ofproto->ofproto_class->set_flood_vlans(ofproto, flood_vlans) | |
549 | : EOPNOTSUPP); | |
abdfe474 JP |
550 | } |
551 | ||
abe529af BP |
552 | /* Returns true if 'aux' is a registered bundle that is currently in use as the |
553 | * output for a mirror. */ | |
554 | bool | |
555 | ofproto_is_mirror_output_bundle(struct ofproto *ofproto, void *aux) | |
556 | { | |
557 | return (ofproto->ofproto_class->is_mirror_output_bundle | |
558 | ? ofproto->ofproto_class->is_mirror_output_bundle(ofproto, aux) | |
559 | : false); | |
560 | } | |
561 | \f | |
81e2083f BP |
562 | bool |
563 | ofproto_has_snoops(const struct ofproto *ofproto) | |
564 | { | |
565 | return connmgr_has_snoops(ofproto->connmgr); | |
566 | } | |
567 | ||
064af421 | 568 | void |
81e2083f | 569 | ofproto_get_snoops(const struct ofproto *ofproto, struct sset *snoops) |
064af421 | 570 | { |
19a87e36 | 571 | connmgr_get_snoops(ofproto->connmgr, snoops); |
064af421 BP |
572 | } |
573 | ||
abe529af BP |
574 | static void |
575 | ofproto_destroy__(struct ofproto *ofproto) | |
576 | { | |
6c1491fb BP |
577 | size_t i; |
578 | ||
abe529af | 579 | connmgr_destroy(ofproto->connmgr); |
fa066f01 | 580 | |
abe529af BP |
581 | hmap_remove(&all_ofprotos, &ofproto->hmap_node); |
582 | free(ofproto->name); | |
955a7127 | 583 | free(ofproto->type); |
abe529af BP |
584 | free(ofproto->mfr_desc); |
585 | free(ofproto->hw_desc); | |
586 | free(ofproto->sw_desc); | |
587 | free(ofproto->serial_desc); | |
588 | free(ofproto->dp_desc); | |
abe529af BP |
589 | hmap_destroy(&ofproto->ports); |
590 | shash_destroy(&ofproto->port_by_name); | |
6c1491fb BP |
591 | |
592 | for (i = 0; i < ofproto->n_tables; i++) { | |
593 | classifier_destroy(&ofproto->tables[i]); | |
594 | } | |
595 | free(ofproto->tables); | |
fa066f01 | 596 | |
abe529af BP |
597 | ofproto->ofproto_class->dealloc(ofproto); |
598 | } | |
fa066f01 | 599 | |
064af421 BP |
600 | void |
601 | ofproto_destroy(struct ofproto *p) | |
602 | { | |
ca0f572c | 603 | struct ofport *ofport, *next_ofport; |
064af421 BP |
604 | |
605 | if (!p) { | |
606 | return; | |
607 | } | |
608 | ||
142e1f5c | 609 | ofproto_flush_flows__(p); |
4e8e4213 | 610 | HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) { |
abe529af | 611 | ofport_destroy(ofport); |
064af421 | 612 | } |
064af421 | 613 | |
abe529af BP |
614 | p->ofproto_class->destruct(p); |
615 | ofproto_destroy__(p); | |
064af421 BP |
616 | } |
617 | ||
abe529af BP |
618 | /* Destroys the datapath with the respective 'name' and 'type'. With the Linux |
619 | * kernel datapath, for example, this destroys the datapath in the kernel, and | |
620 | * with the netdev-based datapath, it tears down the data structures that | |
621 | * represent the datapath. | |
622 | * | |
623 | * The datapath should not be currently open as an ofproto. */ | |
064af421 | 624 | int |
abe529af | 625 | ofproto_delete(const char *name, const char *type) |
064af421 | 626 | { |
abe529af BP |
627 | const struct ofproto_class *class = ofproto_class_find__(type); |
628 | return (!class ? EAFNOSUPPORT | |
629 | : !class->del ? EACCES | |
630 | : class->del(type, name)); | |
064af421 BP |
631 | } |
632 | ||
e9e28be3 BP |
633 | static void |
634 | process_port_change(struct ofproto *ofproto, int error, char *devname) | |
635 | { | |
636 | if (error == ENOBUFS) { | |
637 | reinit_ports(ofproto); | |
638 | } else if (!error) { | |
639 | update_port(ofproto, devname); | |
640 | free(devname); | |
641 | } | |
642 | } | |
643 | ||
064af421 | 644 | int |
abe529af | 645 | ofproto_run(struct ofproto *p) |
064af421 | 646 | { |
031d8bff | 647 | struct ofport *ofport; |
064af421 BP |
648 | char *devname; |
649 | int error; | |
064af421 | 650 | |
abe529af BP |
651 | error = p->ofproto_class->run(p); |
652 | if (error == ENODEV) { | |
653 | /* Someone destroyed the datapath behind our back. The caller | |
654 | * better destroy us and give up, because we're just going to | |
655 | * spin from here on out. */ | |
656 | static struct vlog_rate_limit rl2 = VLOG_RATE_LIMIT_INIT(1, 5); | |
657 | VLOG_ERR_RL(&rl2, "%s: datapath was destroyed externally", | |
658 | p->name); | |
659 | return ENODEV; | |
149f577a JG |
660 | } |
661 | ||
5bf0e941 BP |
662 | if (p->ofproto_class->port_poll) { |
663 | while ((error = p->ofproto_class->port_poll(p, &devname)) != EAGAIN) { | |
664 | process_port_change(p, error, devname); | |
064af421 | 665 | } |
e9e28be3 | 666 | } |
031d8bff EJ |
667 | |
668 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
669 | unsigned int change_seq = netdev_change_seq(ofport->netdev); | |
670 | if (ofport->change_seq != change_seq) { | |
671 | ofport->change_seq = change_seq; | |
672 | update_port(p, netdev_get_name(ofport->netdev)); | |
673 | } | |
064af421 BP |
674 | } |
675 | ||
19a87e36 | 676 | connmgr_run(p->connmgr, handle_openflow); |
064af421 | 677 | |
064af421 BP |
678 | return 0; |
679 | } | |
680 | ||
681 | void | |
682 | ofproto_wait(struct ofproto *p) | |
683 | { | |
031d8bff EJ |
684 | struct ofport *ofport; |
685 | ||
abe529af | 686 | p->ofproto_class->wait(p); |
5bf0e941 BP |
687 | if (p->ofproto_class->port_poll_wait) { |
688 | p->ofproto_class->port_poll_wait(p); | |
e7934396 | 689 | } |
031d8bff EJ |
690 | |
691 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
692 | if (ofport->change_seq != netdev_change_seq(ofport->netdev)) { | |
693 | poll_immediate_wake(); | |
694 | } | |
695 | } | |
19a87e36 | 696 | connmgr_wait(p->connmgr); |
064af421 BP |
697 | } |
698 | ||
064af421 BP |
699 | bool |
700 | ofproto_is_alive(const struct ofproto *p) | |
701 | { | |
19a87e36 | 702 | return connmgr_has_controllers(p->connmgr); |
064af421 BP |
703 | } |
704 | ||
bffc0589 | 705 | void |
2cdcb898 | 706 | ofproto_get_ofproto_controller_info(const struct ofproto *ofproto, |
bffc0589 AE |
707 | struct shash *info) |
708 | { | |
19a87e36 | 709 | connmgr_get_controller_info(ofproto->connmgr, info); |
bffc0589 AE |
710 | } |
711 | ||
712 | void | |
713 | ofproto_free_ofproto_controller_info(struct shash *info) | |
714 | { | |
715 | struct shash_node *node; | |
716 | ||
717 | SHASH_FOR_EACH (node, info) { | |
718 | struct ofproto_controller_info *cinfo = node->data; | |
719 | while (cinfo->pairs.n) { | |
720 | free((char *) cinfo->pairs.values[--cinfo->pairs.n]); | |
721 | } | |
722 | free(cinfo); | |
723 | } | |
724 | shash_destroy(info); | |
725 | } | |
726 | ||
b5827b24 BP |
727 | /* Makes a deep copy of 'old' into 'port'. */ |
728 | void | |
729 | ofproto_port_clone(struct ofproto_port *port, const struct ofproto_port *old) | |
730 | { | |
731 | port->name = xstrdup(old->name); | |
732 | port->type = xstrdup(old->type); | |
733 | port->ofp_port = old->ofp_port; | |
734 | } | |
735 | ||
736 | /* Frees memory allocated to members of 'ofproto_port'. | |
3a6ccc8c | 737 | * |
b5827b24 BP |
738 | * Do not call this function on an ofproto_port obtained from |
739 | * ofproto_port_dump_next(): that function retains ownership of the data in the | |
740 | * ofproto_port. */ | |
741 | void | |
742 | ofproto_port_destroy(struct ofproto_port *ofproto_port) | |
743 | { | |
744 | free(ofproto_port->name); | |
745 | free(ofproto_port->type); | |
746 | } | |
747 | ||
b5827b24 | 748 | /* Initializes 'dump' to begin dumping the ports in an ofproto. |
3a6ccc8c | 749 | * |
b5827b24 BP |
750 | * This function provides no status indication. An error status for the entire |
751 | * dump operation is provided when it is completed by calling | |
752 | * ofproto_port_dump_done(). | |
753 | */ | |
754 | void | |
755 | ofproto_port_dump_start(struct ofproto_port_dump *dump, | |
756 | const struct ofproto *ofproto) | |
757 | { | |
abe529af BP |
758 | dump->ofproto = ofproto; |
759 | dump->error = ofproto->ofproto_class->port_dump_start(ofproto, | |
760 | &dump->state); | |
b5827b24 BP |
761 | } |
762 | ||
763 | /* Attempts to retrieve another port from 'dump', which must have been created | |
764 | * with ofproto_port_dump_start(). On success, stores a new ofproto_port into | |
765 | * 'port' and returns true. On failure, returns false. | |
766 | * | |
767 | * Failure might indicate an actual error or merely that the last port has been | |
768 | * dumped. An error status for the entire dump operation is provided when it | |
769 | * is completed by calling ofproto_port_dump_done(). | |
770 | * | |
771 | * The ofproto owns the data stored in 'port'. It will remain valid until at | |
772 | * least the next time 'dump' is passed to ofproto_port_dump_next() or | |
773 | * ofproto_port_dump_done(). */ | |
774 | bool | |
775 | ofproto_port_dump_next(struct ofproto_port_dump *dump, | |
776 | struct ofproto_port *port) | |
777 | { | |
abe529af BP |
778 | const struct ofproto *ofproto = dump->ofproto; |
779 | ||
780 | if (dump->error) { | |
781 | return false; | |
782 | } | |
b5827b24 | 783 | |
abe529af BP |
784 | dump->error = ofproto->ofproto_class->port_dump_next(ofproto, dump->state, |
785 | port); | |
786 | if (dump->error) { | |
787 | ofproto->ofproto_class->port_dump_done(ofproto, dump->state); | |
788 | return false; | |
b5827b24 | 789 | } |
abe529af | 790 | return true; |
b5827b24 BP |
791 | } |
792 | ||
793 | /* Completes port table dump operation 'dump', which must have been created | |
794 | * with ofproto_port_dump_start(). Returns 0 if the dump operation was | |
795 | * error-free, otherwise a positive errno value describing the problem. */ | |
3a6ccc8c | 796 | int |
b5827b24 | 797 | ofproto_port_dump_done(struct ofproto_port_dump *dump) |
3a6ccc8c | 798 | { |
abe529af BP |
799 | const struct ofproto *ofproto = dump->ofproto; |
800 | if (!dump->error) { | |
801 | dump->error = ofproto->ofproto_class->port_dump_done(ofproto, | |
802 | dump->state); | |
803 | } | |
804 | return dump->error == EOF ? 0 : dump->error; | |
b5827b24 BP |
805 | } |
806 | ||
807 | /* Attempts to add 'netdev' as a port on 'ofproto'. If successful, returns 0 | |
892815f5 | 808 | * and sets '*ofp_portp' to the new port's OpenFlow port number (if 'ofp_portp' |
b5827b24 BP |
809 | * is non-null). On failure, returns a positive errno value and sets |
810 | * '*ofp_portp' to OFPP_NONE (if 'ofp_portp' is non-null). */ | |
811 | int | |
812 | ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev, | |
813 | uint16_t *ofp_portp) | |
814 | { | |
abe529af | 815 | uint16_t ofp_port; |
3a6ccc8c BP |
816 | int error; |
817 | ||
abe529af | 818 | error = ofproto->ofproto_class->port_add(ofproto, netdev, &ofp_port); |
1fa24dea BP |
819 | if (!error) { |
820 | update_port(ofproto, netdev_get_name(netdev)); | |
821 | } | |
b5827b24 | 822 | if (ofp_portp) { |
abe529af | 823 | *ofp_portp = error ? OFPP_NONE : ofp_port; |
3a6ccc8c BP |
824 | } |
825 | return error; | |
826 | } | |
827 | ||
b5827b24 BP |
828 | /* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and |
829 | * initializes '*port' appropriately; on failure, returns a positive errno | |
830 | * value. | |
831 | * | |
abe529af | 832 | * The caller owns the data in 'ofproto_port' and must free it with |
b5827b24 BP |
833 | * ofproto_port_destroy() when it is no longer needed. */ |
834 | int | |
835 | ofproto_port_query_by_name(const struct ofproto *ofproto, const char *devname, | |
836 | struct ofproto_port *port) | |
a4e2e1f2 | 837 | { |
b5827b24 BP |
838 | int error; |
839 | ||
abe529af BP |
840 | error = ofproto->ofproto_class->port_query_by_name(ofproto, devname, port); |
841 | if (error) { | |
842 | memset(port, 0, sizeof *port); | |
b5827b24 BP |
843 | } |
844 | return error; | |
a4e2e1f2 EJ |
845 | } |
846 | ||
b5827b24 | 847 | /* Deletes port number 'ofp_port' from the datapath for 'ofproto'. |
3a6ccc8c | 848 | * Returns 0 if successful, otherwise a positive errno. */ |
064af421 | 849 | int |
b5827b24 | 850 | ofproto_port_del(struct ofproto *ofproto, uint16_t ofp_port) |
064af421 | 851 | { |
abe529af | 852 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1264ec95 | 853 | const char *name = ofport ? netdev_get_name(ofport->netdev) : "<unknown>"; |
3cf10406 | 854 | int error; |
cdee00fd | 855 | |
abe529af | 856 | error = ofproto->ofproto_class->port_del(ofproto, ofp_port); |
892815f5 | 857 | if (!error && ofport) { |
1264ec95 BP |
858 | /* 'name' is the netdev's name and update_port() is going to close the |
859 | * netdev. Just in case update_port() refers to 'name' after it | |
3a6ccc8c BP |
860 | * destroys 'ofport', make a copy of it around the update_port() |
861 | * call. */ | |
862 | char *devname = xstrdup(name); | |
863 | update_port(ofproto, devname); | |
864 | free(devname); | |
3cf10406 BP |
865 | } |
866 | return error; | |
064af421 BP |
867 | } |
868 | ||
6c1491fb | 869 | /* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and |
fa8b054f BP |
870 | * performs the 'n_actions' actions in 'actions'. The new flow will not |
871 | * timeout. | |
872 | * | |
873 | * If cls_rule->priority is in the range of priorities supported by OpenFlow | |
874 | * (0...65535, inclusive) then the flow will be visible to OpenFlow | |
875 | * controllers; otherwise, it will be hidden. | |
876 | * | |
6c1491fb BP |
877 | * The caller retains ownership of 'cls_rule' and 'actions'. |
878 | * | |
879 | * This is a helper function for in-band control and fail-open. */ | |
064af421 | 880 | void |
cf3fad8a | 881 | ofproto_add_flow(struct ofproto *p, const struct cls_rule *cls_rule, |
fa8b054f | 882 | const union ofp_action *actions, size_t n_actions) |
064af421 BP |
883 | { |
884 | struct rule *rule; | |
0ab6decf | 885 | rule_create(p, cls_rule, 0, actions, n_actions, 0, 0, 0, false, &rule); |
064af421 BP |
886 | } |
887 | ||
6c1491fb BP |
888 | /* Searches for a rule with matching criteria exactly equal to 'target' in |
889 | * ofproto's table 0 and, if it finds one, deletes it. | |
890 | * | |
891 | * This is a helper function for in-band control and fail-open. */ | |
064af421 | 892 | void |
cf3fad8a | 893 | ofproto_delete_flow(struct ofproto *ofproto, const struct cls_rule *target) |
064af421 BP |
894 | { |
895 | struct rule *rule; | |
896 | ||
6c1491fb BP |
897 | rule = rule_from_cls_rule(classifier_find_rule_exactly( |
898 | &ofproto->tables[0], target)); | |
08944c1d | 899 | ofproto_rule_destroy(rule); |
064af421 BP |
900 | } |
901 | ||
142e1f5c BP |
902 | static void |
903 | ofproto_flush_flows__(struct ofproto *ofproto) | |
064af421 | 904 | { |
6c1491fb | 905 | size_t i; |
bcf84111 | 906 | |
064af421 | 907 | COVERAGE_INC(ofproto_flush); |
bcf84111 | 908 | |
abe529af BP |
909 | if (ofproto->ofproto_class->flush) { |
910 | ofproto->ofproto_class->flush(ofproto); | |
bcf84111 | 911 | } |
5ecc9d81 | 912 | |
6c1491fb BP |
913 | for (i = 0; i < ofproto->n_tables; i++) { |
914 | struct rule *rule, *next_rule; | |
915 | struct cls_cursor cursor; | |
5ecc9d81 | 916 | |
6c1491fb BP |
917 | cls_cursor_init(&cursor, &ofproto->tables[i], NULL); |
918 | CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) { | |
919 | ofproto_rule_destroy(rule); | |
920 | } | |
5ecc9d81 | 921 | } |
142e1f5c BP |
922 | } |
923 | ||
6c1491fb BP |
924 | /* Deletes all of the flows from all of ofproto's flow tables, then |
925 | * reintroduces rules required by in-band control and fail open. */ | |
142e1f5c BP |
926 | void |
927 | ofproto_flush_flows(struct ofproto *ofproto) | |
928 | { | |
929 | ofproto_flush_flows__(ofproto); | |
19a87e36 | 930 | connmgr_flushed(ofproto->connmgr); |
064af421 BP |
931 | } |
932 | \f | |
933 | static void | |
934 | reinit_ports(struct ofproto *p) | |
935 | { | |
abe529af | 936 | struct ofproto_port_dump dump; |
b3c01ed3 | 937 | struct sset devnames; |
064af421 | 938 | struct ofport *ofport; |
abe529af | 939 | struct ofproto_port ofproto_port; |
b3c01ed3 | 940 | const char *devname; |
064af421 | 941 | |
898bf89d JP |
942 | COVERAGE_INC(ofproto_reinit_ports); |
943 | ||
b3c01ed3 | 944 | sset_init(&devnames); |
4e8e4213 | 945 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { |
1264ec95 | 946 | sset_add(&devnames, netdev_get_name(ofport->netdev)); |
064af421 | 947 | } |
abe529af BP |
948 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { |
949 | sset_add(&devnames, ofproto_port.name); | |
064af421 | 950 | } |
064af421 | 951 | |
b3c01ed3 BP |
952 | SSET_FOR_EACH (devname, &devnames) { |
953 | update_port(p, devname); | |
064af421 | 954 | } |
b3c01ed3 | 955 | sset_destroy(&devnames); |
064af421 BP |
956 | } |
957 | ||
abe529af BP |
958 | /* Opens and returns a netdev for 'ofproto_port', or a null pointer if the |
959 | * netdev cannot be opened. On success, also fills in 'opp'. */ | |
b33951b8 | 960 | static struct netdev * |
abe529af | 961 | ofport_open(const struct ofproto_port *ofproto_port, struct ofp_phy_port *opp) |
064af421 | 962 | { |
118c4676 | 963 | uint32_t curr, advertised, supported, peer; |
149f577a | 964 | struct netdev_options netdev_options; |
064af421 | 965 | enum netdev_flags flags; |
064af421 | 966 | struct netdev *netdev; |
064af421 BP |
967 | int error; |
968 | ||
149f577a | 969 | memset(&netdev_options, 0, sizeof netdev_options); |
abe529af BP |
970 | netdev_options.name = ofproto_port->name; |
971 | netdev_options.type = ofproto_port->type; | |
149f577a | 972 | netdev_options.ethertype = NETDEV_ETH_TYPE_NONE; |
149f577a JG |
973 | |
974 | error = netdev_open(&netdev_options, &netdev); | |
064af421 BP |
975 | if (error) { |
976 | VLOG_WARN_RL(&rl, "ignoring port %s (%"PRIu16") because netdev %s " | |
977 | "cannot be opened (%s)", | |
abe529af BP |
978 | ofproto_port->name, ofproto_port->ofp_port, |
979 | ofproto_port->name, strerror(error)); | |
064af421 BP |
980 | return NULL; |
981 | } | |
982 | ||
064af421 | 983 | netdev_get_flags(netdev, &flags); |
118c4676 | 984 | netdev_get_features(netdev, &curr, &advertised, &supported, &peer); |
064af421 | 985 | |
abe529af | 986 | opp->port_no = htons(ofproto_port->ofp_port); |
b33951b8 | 987 | netdev_get_etheraddr(netdev, opp->hw_addr); |
abe529af | 988 | ovs_strzcpy(opp->name, ofproto_port->name, sizeof opp->name); |
118c4676 BP |
989 | opp->config = flags & NETDEV_UP ? 0 : htonl(OFPPC_PORT_DOWN); |
990 | opp->state = netdev_get_carrier(netdev) ? 0 : htonl(OFPPS_LINK_DOWN); | |
991 | opp->curr = htonl(curr); | |
992 | opp->advertised = htonl(advertised); | |
993 | opp->supported = htonl(supported); | |
994 | opp->peer = htonl(peer); | |
995 | ||
b33951b8 | 996 | return netdev; |
064af421 BP |
997 | } |
998 | ||
b33951b8 BP |
999 | /* Returns true if most fields of 'a' and 'b' are equal. Differences in name, |
1000 | * port number, and 'config' bits other than OFPPC_PORT_DOWN are | |
1001 | * disregarded. */ | |
1002 | static bool | |
1003 | ofport_equal(const struct ofp_phy_port *a, const struct ofp_phy_port *b) | |
064af421 | 1004 | { |
064af421 | 1005 | BUILD_ASSERT_DECL(sizeof *a == 48); /* Detect ofp_phy_port changes. */ |
b33951b8 | 1006 | return (!memcmp(a->hw_addr, b->hw_addr, sizeof a->hw_addr) |
064af421 | 1007 | && a->state == b->state |
118c4676 | 1008 | && !((a->config ^ b->config) & htonl(OFPPC_PORT_DOWN)) |
064af421 BP |
1009 | && a->curr == b->curr |
1010 | && a->advertised == b->advertised | |
1011 | && a->supported == b->supported | |
1012 | && a->peer == b->peer); | |
1013 | } | |
1014 | ||
b33951b8 BP |
1015 | /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'. |
1016 | * The caller must ensure that 'p' does not have a conflicting ofport (that is, | |
1017 | * one with the same name or port number). */ | |
064af421 | 1018 | static void |
b33951b8 BP |
1019 | ofport_install(struct ofproto *p, |
1020 | struct netdev *netdev, const struct ofp_phy_port *opp) | |
064af421 | 1021 | { |
b33951b8 BP |
1022 | const char *netdev_name = netdev_get_name(netdev); |
1023 | struct ofport *ofport; | |
abe529af | 1024 | int error; |
72b06300 | 1025 | |
b33951b8 | 1026 | /* Create ofport. */ |
abe529af BP |
1027 | ofport = p->ofproto_class->port_alloc(); |
1028 | if (!ofport) { | |
1029 | error = ENOMEM; | |
1030 | goto error; | |
1031 | } | |
0f7d71a5 | 1032 | ofport->ofproto = p; |
b33951b8 | 1033 | ofport->netdev = netdev; |
031d8bff | 1034 | ofport->change_seq = netdev_change_seq(netdev); |
b33951b8 | 1035 | ofport->opp = *opp; |
abe529af | 1036 | ofport->ofp_port = ntohs(opp->port_no); |
b33951b8 BP |
1037 | |
1038 | /* Add port to 'p'. */ | |
abe529af | 1039 | hmap_insert(&p->ports, &ofport->hmap_node, hash_int(ofport->ofp_port, 0)); |
72b06300 | 1040 | shash_add(&p->port_by_name, netdev_name, ofport); |
abe529af BP |
1041 | |
1042 | /* Let the ofproto_class initialize its private data. */ | |
1043 | error = p->ofproto_class->port_construct(ofport); | |
1044 | if (error) { | |
1045 | goto error; | |
1046 | } | |
1047 | connmgr_send_port_status(p->connmgr, opp, OFPPR_ADD); | |
1048 | return; | |
1049 | ||
1050 | error: | |
1051 | VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)", | |
1052 | p->name, netdev_name, strerror(error)); | |
1053 | if (ofport) { | |
1054 | ofport_destroy__(ofport); | |
1055 | } else { | |
1056 | netdev_close(netdev); | |
72b06300 | 1057 | } |
064af421 BP |
1058 | } |
1059 | ||
b33951b8 | 1060 | /* Removes 'ofport' from 'p' and destroys it. */ |
064af421 | 1061 | static void |
0f7d71a5 | 1062 | ofport_remove(struct ofport *ofport) |
064af421 | 1063 | { |
fa066f01 BP |
1064 | connmgr_send_port_status(ofport->ofproto->connmgr, &ofport->opp, |
1065 | OFPPR_DELETE); | |
abe529af | 1066 | ofport_destroy(ofport); |
b33951b8 BP |
1067 | } |
1068 | ||
1069 | /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and | |
1070 | * destroys it. */ | |
1071 | static void | |
1072 | ofport_remove_with_name(struct ofproto *ofproto, const char *name) | |
1073 | { | |
1074 | struct ofport *port = shash_find_data(&ofproto->port_by_name, name); | |
1075 | if (port) { | |
0f7d71a5 | 1076 | ofport_remove(port); |
b33951b8 BP |
1077 | } |
1078 | } | |
1079 | ||
1080 | /* Updates 'port' within 'ofproto' with the new 'netdev' and 'opp'. | |
1081 | * | |
1082 | * Does not handle a name or port number change. The caller must implement | |
1083 | * such a change as a delete followed by an add. */ | |
1084 | static void | |
abe529af | 1085 | ofport_modified(struct ofport *port, struct ofp_phy_port *opp) |
b33951b8 BP |
1086 | { |
1087 | memcpy(port->opp.hw_addr, opp->hw_addr, ETH_ADDR_LEN); | |
118c4676 BP |
1088 | port->opp.config = ((port->opp.config & ~htonl(OFPPC_PORT_DOWN)) |
1089 | | (opp->config & htonl(OFPPC_PORT_DOWN))); | |
b33951b8 BP |
1090 | port->opp.state = opp->state; |
1091 | port->opp.curr = opp->curr; | |
1092 | port->opp.advertised = opp->advertised; | |
1093 | port->opp.supported = opp->supported; | |
1094 | port->opp.peer = opp->peer; | |
1095 | ||
abe529af | 1096 | connmgr_send_port_status(port->ofproto->connmgr, &port->opp, OFPPR_MODIFY); |
064af421 BP |
1097 | } |
1098 | ||
abe529af BP |
1099 | void |
1100 | ofproto_port_unregister(struct ofproto *ofproto, uint16_t ofp_port) | |
e7934396 | 1101 | { |
abe529af BP |
1102 | struct ofport *port = ofproto_get_port(ofproto, ofp_port); |
1103 | if (port) { | |
1104 | if (port->ofproto->ofproto_class->set_cfm) { | |
a5610457 | 1105 | port->ofproto->ofproto_class->set_cfm(port, NULL); |
abe529af BP |
1106 | } |
1107 | if (port->ofproto->ofproto_class->bundle_remove) { | |
1108 | port->ofproto->ofproto_class->bundle_remove(port); | |
e7934396 BP |
1109 | } |
1110 | } | |
1111 | } | |
1112 | ||
1113 | static void | |
abe529af | 1114 | ofport_destroy__(struct ofport *port) |
e7934396 | 1115 | { |
abe529af BP |
1116 | struct ofproto *ofproto = port->ofproto; |
1117 | const char *name = netdev_get_name(port->netdev); | |
fa066f01 | 1118 | |
abe529af BP |
1119 | hmap_remove(&ofproto->ports, &port->hmap_node); |
1120 | shash_delete(&ofproto->port_by_name, | |
1121 | shash_find(&ofproto->port_by_name, name)); | |
fa066f01 | 1122 | |
abe529af BP |
1123 | netdev_close(port->netdev); |
1124 | ofproto->ofproto_class->port_dealloc(port); | |
e7934396 BP |
1125 | } |
1126 | ||
064af421 | 1127 | static void |
abe529af | 1128 | ofport_destroy(struct ofport *port) |
064af421 | 1129 | { |
fa066f01 | 1130 | if (port) { |
abe529af BP |
1131 | port->ofproto->ofproto_class->port_destruct(port); |
1132 | ofport_destroy__(port); | |
1133 | } | |
064af421 BP |
1134 | } |
1135 | ||
abe529af BP |
1136 | struct ofport * |
1137 | ofproto_get_port(const struct ofproto *ofproto, uint16_t ofp_port) | |
ca0f572c BP |
1138 | { |
1139 | struct ofport *port; | |
1140 | ||
4e8e4213 | 1141 | HMAP_FOR_EACH_IN_BUCKET (port, hmap_node, |
abe529af BP |
1142 | hash_int(ofp_port, 0), &ofproto->ports) { |
1143 | if (port->ofp_port == ofp_port) { | |
ca0f572c BP |
1144 | return port; |
1145 | } | |
1146 | } | |
1147 | return NULL; | |
1148 | } | |
1149 | ||
064af421 | 1150 | static void |
b33951b8 | 1151 | update_port(struct ofproto *ofproto, const char *name) |
064af421 | 1152 | { |
abe529af | 1153 | struct ofproto_port ofproto_port; |
b33951b8 BP |
1154 | struct ofp_phy_port opp; |
1155 | struct netdev *netdev; | |
1156 | struct ofport *port; | |
064af421 BP |
1157 | |
1158 | COVERAGE_INC(ofproto_update_port); | |
c874dc6d | 1159 | |
b33951b8 | 1160 | /* Fetch 'name''s location and properties from the datapath. */ |
abe529af BP |
1161 | netdev = (!ofproto_port_query_by_name(ofproto, name, &ofproto_port) |
1162 | ? ofport_open(&ofproto_port, &opp) | |
b33951b8 BP |
1163 | : NULL); |
1164 | if (netdev) { | |
abe529af | 1165 | port = ofproto_get_port(ofproto, ofproto_port.ofp_port); |
b33951b8 | 1166 | if (port && !strcmp(netdev_get_name(port->netdev), name)) { |
e65942a0 BP |
1167 | struct netdev *old_netdev = port->netdev; |
1168 | ||
b33951b8 BP |
1169 | /* 'name' hasn't changed location. Any properties changed? */ |
1170 | if (!ofport_equal(&port->opp, &opp)) { | |
abe529af BP |
1171 | ofport_modified(port, &opp); |
1172 | } | |
1173 | ||
e65942a0 BP |
1174 | /* Install the newly opened netdev in case it has changed. |
1175 | * Don't close the old netdev yet in case port_modified has to | |
1176 | * remove a retained reference to it.*/ | |
abe529af | 1177 | port->netdev = netdev; |
031d8bff | 1178 | port->change_seq = netdev_change_seq(netdev); |
abe529af BP |
1179 | |
1180 | if (port->ofproto->ofproto_class->port_modified) { | |
1181 | port->ofproto->ofproto_class->port_modified(port); | |
b33951b8 | 1182 | } |
e65942a0 BP |
1183 | |
1184 | netdev_close(old_netdev); | |
b33951b8 BP |
1185 | } else { |
1186 | /* If 'port' is nonnull then its name differs from 'name' and thus | |
1187 | * we should delete it. If we think there's a port named 'name' | |
1188 | * then its port number must be wrong now so delete it too. */ | |
1189 | if (port) { | |
0f7d71a5 | 1190 | ofport_remove(port); |
b33951b8 BP |
1191 | } |
1192 | ofport_remove_with_name(ofproto, name); | |
1193 | ofport_install(ofproto, netdev, &opp); | |
c874dc6d | 1194 | } |
b33951b8 BP |
1195 | } else { |
1196 | /* Any port named 'name' is gone now. */ | |
1197 | ofport_remove_with_name(ofproto, name); | |
c874dc6d | 1198 | } |
abe529af | 1199 | ofproto_port_destroy(&ofproto_port); |
064af421 BP |
1200 | } |
1201 | ||
1202 | static int | |
1203 | init_ports(struct ofproto *p) | |
1204 | { | |
abe529af BP |
1205 | struct ofproto_port_dump dump; |
1206 | struct ofproto_port ofproto_port; | |
1207 | ||
1208 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { | |
1209 | uint16_t ofp_port = ofproto_port.ofp_port; | |
1210 | if (ofproto_get_port(p, ofp_port)) { | |
1211 | VLOG_WARN_RL(&rl, "ignoring duplicate port %"PRIu16" in datapath", | |
1212 | ofp_port); | |
1213 | } else if (shash_find(&p->port_by_name, ofproto_port.name)) { | |
1214 | VLOG_WARN_RL(&rl, "ignoring duplicate device %s in datapath", | |
1215 | ofproto_port.name); | |
1216 | } else { | |
b33951b8 BP |
1217 | struct ofp_phy_port opp; |
1218 | struct netdev *netdev; | |
1219 | ||
abe529af | 1220 | netdev = ofport_open(&ofproto_port, &opp); |
b33951b8 BP |
1221 | if (netdev) { |
1222 | ofport_install(p, netdev, &opp); | |
064af421 BP |
1223 | } |
1224 | } | |
1225 | } | |
b0ec0f27 | 1226 | |
064af421 BP |
1227 | return 0; |
1228 | } | |
1229 | \f | |
abe529af BP |
1230 | /* Creates a new rule initialized as specified, inserts it into 'ofproto''s |
1231 | * flow table, and stores the new rule into '*rulep'. Returns 0 on success, | |
1232 | * otherwise a positive errno value or OpenFlow error code. */ | |
1233 | static int | |
0ab6decf BP |
1234 | rule_create(struct ofproto *ofproto, |
1235 | const struct cls_rule *cls_rule, uint8_t table_id, | |
064af421 | 1236 | const union ofp_action *actions, size_t n_actions, |
ca069229 | 1237 | uint16_t idle_timeout, uint16_t hard_timeout, |
abe529af BP |
1238 | ovs_be64 flow_cookie, bool send_flow_removed, |
1239 | struct rule **rulep) | |
064af421 | 1240 | { |
abe529af BP |
1241 | struct rule *rule; |
1242 | int error; | |
1243 | ||
0ab6decf BP |
1244 | if (table_id == 0xff) { |
1245 | if (ofproto->n_tables > 1) { | |
1246 | error = ofproto->ofproto_class->rule_choose_table(ofproto, | |
1247 | cls_rule, | |
1248 | &table_id); | |
1249 | if (error) { | |
1250 | return error; | |
1251 | } | |
1252 | assert(table_id < ofproto->n_tables); | |
1253 | } else { | |
1254 | table_id = 0; | |
1255 | } | |
1256 | } | |
1257 | ||
abe529af BP |
1258 | rule = ofproto->ofproto_class->rule_alloc(); |
1259 | if (!rule) { | |
1260 | error = ENOMEM; | |
1261 | goto error; | |
1262 | } | |
1263 | ||
1264 | rule->ofproto = ofproto; | |
bcf84111 | 1265 | rule->cr = *cls_rule; |
0ab6decf | 1266 | rule->table_id = table_id; |
abe529af BP |
1267 | rule->flow_cookie = flow_cookie; |
1268 | rule->created = time_msec(); | |
064af421 BP |
1269 | rule->idle_timeout = idle_timeout; |
1270 | rule->hard_timeout = hard_timeout; | |
ca069229 | 1271 | rule->send_flow_removed = send_flow_removed; |
3dffcf07 | 1272 | if (n_actions > 0) { |
3dffcf07 | 1273 | rule->actions = xmemdup(actions, n_actions * sizeof *actions); |
abe529af BP |
1274 | } else { |
1275 | rule->actions = NULL; | |
3dffcf07 | 1276 | } |
abe529af | 1277 | rule->n_actions = n_actions; |
0193b2af | 1278 | |
abe529af BP |
1279 | error = ofproto->ofproto_class->rule_construct(rule); |
1280 | if (error) { | |
1281 | ofproto_rule_destroy__(rule); | |
1282 | goto error; | |
1283 | } | |
064af421 | 1284 | |
abe529af BP |
1285 | *rulep = rule; |
1286 | return 0; | |
1287 | ||
1288 | error: | |
1289 | VLOG_WARN_RL(&rl, "%s: failed to create rule (%s)", | |
1290 | ofproto->name, strerror(error)); | |
1291 | *rulep = NULL; | |
1292 | return error; | |
064af421 BP |
1293 | } |
1294 | ||
1295 | static void | |
abe529af | 1296 | ofproto_rule_destroy__(struct rule *rule) |
064af421 BP |
1297 | { |
1298 | free(rule->actions); | |
abe529af | 1299 | rule->ofproto->ofproto_class->rule_dealloc(rule); |
064af421 BP |
1300 | } |
1301 | ||
08944c1d | 1302 | /* Destroys 'rule' and removes it from the flow table and the datapath. */ |
abe529af BP |
1303 | void |
1304 | ofproto_rule_destroy(struct rule *rule) | |
064af421 | 1305 | { |
08944c1d BP |
1306 | if (rule) { |
1307 | rule->ofproto->ofproto_class->rule_destruct(rule); | |
1308 | ofproto_rule_destroy__(rule); | |
064af421 | 1309 | } |
064af421 BP |
1310 | } |
1311 | ||
bcf84111 BP |
1312 | /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action |
1313 | * that outputs to 'out_port' (output to OFPP_FLOOD and OFPP_ALL doesn't | |
1314 | * count). */ | |
064af421 | 1315 | static bool |
8054fc48 | 1316 | rule_has_out_port(const struct rule *rule, ovs_be16 out_port) |
064af421 BP |
1317 | { |
1318 | const union ofp_action *oa; | |
1319 | struct actions_iterator i; | |
1320 | ||
1321 | if (out_port == htons(OFPP_NONE)) { | |
1322 | return true; | |
1323 | } | |
1324 | for (oa = actions_first(&i, rule->actions, rule->n_actions); oa; | |
1325 | oa = actions_next(&i)) { | |
c1c9c9c4 | 1326 | if (action_outputs_to_port(oa, out_port)) { |
064af421 BP |
1327 | return true; |
1328 | } | |
1329 | } | |
1330 | return false; | |
1331 | } | |
1332 | ||
bcf84111 | 1333 | /* Executes the actions indicated by 'rule' on 'packet' and credits 'rule''s |
bcf84111 BP |
1334 | * statistics appropriately. 'packet' must have at least sizeof(struct |
1335 | * ofp_packet_in) bytes of headroom. | |
064af421 | 1336 | * |
bcf84111 BP |
1337 | * 'packet' doesn't necessarily have to match 'rule'. 'rule' will be credited |
1338 | * with statistics for 'packet' either way. | |
1339 | * | |
1340 | * Takes ownership of 'packet'. */ | |
5bf0e941 | 1341 | static int |
abe529af | 1342 | rule_execute(struct rule *rule, uint16_t in_port, struct ofpbuf *packet) |
eedc0097 | 1343 | { |
bcf84111 | 1344 | struct flow flow; |
eedc0097 | 1345 | |
abe529af | 1346 | assert(ofpbuf_headroom(packet) >= sizeof(struct ofp_packet_in)); |
eedc0097 | 1347 | |
abe529af | 1348 | flow_extract(packet, 0, in_port, &flow); |
5bf0e941 | 1349 | return rule->ofproto->ofproto_class->rule_execute(rule, &flow, packet); |
350a665f BP |
1350 | } |
1351 | ||
abe529af BP |
1352 | /* Returns true if 'rule' should be hidden from the controller. |
1353 | * | |
1354 | * Rules with priority higher than UINT16_MAX are set up by ofproto itself | |
1355 | * (e.g. by in-band control) and are intentionally hidden from the | |
1356 | * controller. */ | |
1357 | static bool | |
1358 | rule_is_hidden(const struct rule *rule) | |
b6c9e612 | 1359 | { |
abe529af | 1360 | return rule->cr.priority > UINT16_MAX; |
7b064a79 | 1361 | } |
fa066f01 | 1362 | \f |
7b064a79 | 1363 | static void |
064af421 BP |
1364 | send_error_oh(const struct ofconn *ofconn, const struct ofp_header *oh, |
1365 | int error) | |
7b064a79 | 1366 | { |
dc4762ed | 1367 | struct ofpbuf *buf = ofputil_encode_error_msg(error, oh); |
26c112c2 BP |
1368 | if (buf) { |
1369 | COVERAGE_INC(ofproto_error); | |
b0421aa2 | 1370 | ofconn_send_reply(ofconn, buf); |
926947e6 | 1371 | } |
b6c9e612 BP |
1372 | } |
1373 | ||
064af421 | 1374 | static int |
d1e2cf21 | 1375 | handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 1376 | { |
b0421aa2 | 1377 | ofconn_send_reply(ofconn, make_echo_reply(oh)); |
064af421 | 1378 | return 0; |
064af421 BP |
1379 | } |
1380 | ||
064af421 | 1381 | static int |
d1e2cf21 | 1382 | handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 1383 | { |
64ff1d96 | 1384 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 BP |
1385 | struct ofp_switch_features *osf; |
1386 | struct ofpbuf *buf; | |
064af421 | 1387 | struct ofport *port; |
6c1491fb BP |
1388 | bool arp_match_ip; |
1389 | uint32_t actions; | |
064af421 | 1390 | |
6c1491fb BP |
1391 | ofproto->ofproto_class->get_features(ofproto, &arp_match_ip, &actions); |
1392 | assert(actions & (1 << OFPAT_OUTPUT)); /* sanity check */ | |
064af421 | 1393 | |
064af421 | 1394 | osf = make_openflow_xid(sizeof *osf, OFPT_FEATURES_REPLY, oh->xid, &buf); |
64ff1d96 | 1395 | osf->datapath_id = htonll(ofproto->datapath_id); |
064af421 | 1396 | osf->n_buffers = htonl(pktbuf_capacity()); |
6c1491fb | 1397 | osf->n_tables = ofproto->n_tables; |
064af421 | 1398 | osf->capabilities = htonl(OFPC_FLOW_STATS | OFPC_TABLE_STATS | |
6c1491fb BP |
1399 | OFPC_PORT_STATS); |
1400 | if (arp_match_ip) { | |
1401 | osf->capabilities |= htonl(OFPC_ARP_MATCH_IP); | |
1402 | } | |
1403 | osf->actions = htonl(actions); | |
064af421 | 1404 | |
64ff1d96 | 1405 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
9cfcdadf | 1406 | ofpbuf_put(buf, &port->opp, sizeof port->opp); |
064af421 | 1407 | } |
064af421 | 1408 | |
b0421aa2 | 1409 | ofconn_send_reply(ofconn, buf); |
064af421 BP |
1410 | return 0; |
1411 | } | |
064af421 | 1412 | |
064af421 | 1413 | static int |
d1e2cf21 | 1414 | handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 1415 | { |
64ff1d96 | 1416 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 BP |
1417 | struct ofpbuf *buf; |
1418 | struct ofp_switch_config *osc; | |
1419 | uint16_t flags; | |
1420 | bool drop_frags; | |
064af421 | 1421 | |
064af421 | 1422 | /* Figure out flags. */ |
abe529af | 1423 | drop_frags = ofproto->ofproto_class->get_drop_frags(ofproto); |
064af421 | 1424 | flags = drop_frags ? OFPC_FRAG_DROP : OFPC_FRAG_NORMAL; |
959a2ecd | 1425 | |
064af421 BP |
1426 | /* Send reply. */ |
1427 | osc = make_openflow_xid(sizeof *osc, OFPT_GET_CONFIG_REPLY, oh->xid, &buf); | |
1428 | osc->flags = htons(flags); | |
810605a2 | 1429 | osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn)); |
b0421aa2 | 1430 | ofconn_send_reply(ofconn, buf); |
2d70a31a | 1431 | |
064af421 BP |
1432 | return 0; |
1433 | } | |
064af421 | 1434 | |
064af421 | 1435 | static int |
d1e2cf21 | 1436 | handle_set_config(struct ofconn *ofconn, const struct ofp_switch_config *osc) |
064af421 | 1437 | { |
64ff1d96 | 1438 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
d1e2cf21 | 1439 | uint16_t flags = ntohs(osc->flags); |
2d70a31a | 1440 | |
1ce0a5fa BP |
1441 | if (ofconn_get_type(ofconn) == OFCONN_PRIMARY |
1442 | && ofconn_get_role(ofconn) != NX_ROLE_SLAVE) { | |
064af421 BP |
1443 | switch (flags & OFPC_FRAG_MASK) { |
1444 | case OFPC_FRAG_NORMAL: | |
abe529af | 1445 | ofproto->ofproto_class->set_drop_frags(ofproto, false); |
064af421 | 1446 | break; |
064af421 | 1447 | case OFPC_FRAG_DROP: |
abe529af | 1448 | ofproto->ofproto_class->set_drop_frags(ofproto, true); |
c1c9c9c4 | 1449 | break; |
064af421 | 1450 | default: |
064af421 BP |
1451 | VLOG_WARN_RL(&rl, "requested bad fragment mode (flags=%"PRIx16")", |
1452 | osc->flags); | |
064af421 BP |
1453 | break; |
1454 | } | |
1455 | } | |
ebe482fd | 1456 | |
810605a2 | 1457 | ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len)); |
0ad9b732 | 1458 | |
064af421 | 1459 | return 0; |
064af421 BP |
1460 | } |
1461 | ||
9deba63b BP |
1462 | /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow |
1463 | * error message code (composed with ofp_mkerr()) for the caller to propagate | |
1464 | * upward. Otherwise, returns 0. | |
1465 | * | |
2228b50d | 1466 | * The log message mentions 'msg_type'. */ |
9deba63b | 1467 | static int |
1102893d | 1468 | reject_slave_controller(struct ofconn *ofconn, const char *msg_type) |
9deba63b | 1469 | { |
1ce0a5fa BP |
1470 | if (ofconn_get_type(ofconn) == OFCONN_PRIMARY |
1471 | && ofconn_get_role(ofconn) == NX_ROLE_SLAVE) { | |
9deba63b | 1472 | static struct vlog_rate_limit perm_rl = VLOG_RATE_LIMIT_INIT(1, 5); |
9deba63b | 1473 | VLOG_WARN_RL(&perm_rl, "rejecting %s message from slave controller", |
2228b50d | 1474 | msg_type); |
9deba63b BP |
1475 | |
1476 | return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_EPERM); | |
1477 | } else { | |
1478 | return 0; | |
1479 | } | |
1480 | } | |
1481 | ||
064af421 | 1482 | static int |
d1e2cf21 | 1483 | handle_packet_out(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 1484 | { |
64ff1d96 | 1485 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 BP |
1486 | struct ofp_packet_out *opo; |
1487 | struct ofpbuf payload, *buffer; | |
ac51afaf | 1488 | union ofp_action *ofp_actions; |
ac51afaf | 1489 | struct ofpbuf request; |
ae412e7d | 1490 | struct flow flow; |
ac51afaf | 1491 | size_t n_ofp_actions; |
064af421 | 1492 | uint16_t in_port; |
064af421 BP |
1493 | int error; |
1494 | ||
ac51afaf BP |
1495 | COVERAGE_INC(ofproto_packet_out); |
1496 | ||
2228b50d | 1497 | error = reject_slave_controller(ofconn, "OFPT_PACKET_OUT"); |
9deba63b BP |
1498 | if (error) { |
1499 | return error; | |
1500 | } | |
1501 | ||
ac51afaf | 1502 | /* Get ofp_packet_out. */ |
0bc9407d | 1503 | ofpbuf_use_const(&request, oh, ntohs(oh->length)); |
bbc32a88 | 1504 | opo = ofpbuf_pull(&request, offsetof(struct ofp_packet_out, actions)); |
ac51afaf BP |
1505 | |
1506 | /* Get actions. */ | |
1507 | error = ofputil_pull_actions(&request, ntohs(opo->actions_len), | |
1508 | &ofp_actions, &n_ofp_actions); | |
064af421 BP |
1509 | if (error) { |
1510 | return error; | |
1511 | } | |
064af421 | 1512 | |
ac51afaf | 1513 | /* Get payload. */ |
064af421 | 1514 | if (opo->buffer_id != htonl(UINT32_MAX)) { |
10d0a1d2 BP |
1515 | error = ofconn_pktbuf_retrieve(ofconn, ntohl(opo->buffer_id), |
1516 | &buffer, &in_port); | |
7778bd15 | 1517 | if (error || !buffer) { |
064af421 BP |
1518 | return error; |
1519 | } | |
1520 | payload = *buffer; | |
1521 | } else { | |
ac51afaf | 1522 | payload = request; |
064af421 BP |
1523 | buffer = NULL; |
1524 | } | |
1525 | ||
abe529af BP |
1526 | /* Send out packet. */ |
1527 | flow_extract(&payload, 0, ntohs(opo->in_port), &flow); | |
1528 | error = p->ofproto_class->packet_out(p, &payload, &flow, | |
1529 | ofp_actions, n_ofp_actions); | |
ac51afaf | 1530 | ofpbuf_delete(buffer); |
abe529af BP |
1531 | |
1532 | return error; | |
064af421 BP |
1533 | } |
1534 | ||
1535 | static void | |
abe529af | 1536 | update_port_config(struct ofport *port, ovs_be32 config, ovs_be32 mask) |
064af421 | 1537 | { |
abe529af BP |
1538 | ovs_be32 old_config = port->opp.config; |
1539 | ||
064af421 | 1540 | mask &= config ^ port->opp.config; |
118c4676 BP |
1541 | if (mask & htonl(OFPPC_PORT_DOWN)) { |
1542 | if (config & htonl(OFPPC_PORT_DOWN)) { | |
064af421 BP |
1543 | netdev_turn_flags_off(port->netdev, NETDEV_UP, true); |
1544 | } else { | |
1545 | netdev_turn_flags_on(port->netdev, NETDEV_UP, true); | |
1546 | } | |
1547 | } | |
abe529af BP |
1548 | |
1549 | port->opp.config ^= mask & (htonl(OFPPC_NO_RECV | OFPPC_NO_RECV_STP | | |
1550 | OFPPC_NO_FLOOD | OFPPC_NO_FWD | | |
1551 | OFPPC_NO_PACKET_IN)); | |
1552 | if (port->opp.config != old_config) { | |
1553 | port->ofproto->ofproto_class->port_reconfigured(port, old_config); | |
064af421 BP |
1554 | } |
1555 | } | |
1556 | ||
1557 | static int | |
d1e2cf21 | 1558 | handle_port_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 1559 | { |
64ff1d96 | 1560 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
d1e2cf21 | 1561 | const struct ofp_port_mod *opm = (const struct ofp_port_mod *) oh; |
064af421 BP |
1562 | struct ofport *port; |
1563 | int error; | |
1564 | ||
2228b50d | 1565 | error = reject_slave_controller(ofconn, "OFPT_PORT_MOD"); |
9deba63b BP |
1566 | if (error) { |
1567 | return error; | |
1568 | } | |
064af421 | 1569 | |
abe529af | 1570 | port = ofproto_get_port(p, ntohs(opm->port_no)); |
064af421 BP |
1571 | if (!port) { |
1572 | return ofp_mkerr(OFPET_PORT_MOD_FAILED, OFPPMFC_BAD_PORT); | |
1573 | } else if (memcmp(port->opp.hw_addr, opm->hw_addr, OFP_ETH_ALEN)) { | |
1574 | return ofp_mkerr(OFPET_PORT_MOD_FAILED, OFPPMFC_BAD_HW_ADDR); | |
1575 | } else { | |
abe529af | 1576 | update_port_config(port, opm->config, opm->mask); |
064af421 BP |
1577 | if (opm->advertise) { |
1578 | netdev_set_advertisements(port->netdev, ntohl(opm->advertise)); | |
1579 | } | |
1580 | } | |
1581 | return 0; | |
1582 | } | |
1583 | ||
064af421 | 1584 | static int |
3269c562 | 1585 | handle_desc_stats_request(struct ofconn *ofconn, |
63f2140a | 1586 | const struct ofp_stats_msg *request) |
064af421 | 1587 | { |
64ff1d96 | 1588 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 BP |
1589 | struct ofp_desc_stats *ods; |
1590 | struct ofpbuf *msg; | |
1591 | ||
63f2140a | 1592 | ods = ofputil_make_stats_reply(sizeof *ods, request, &msg); |
5a719c38 JP |
1593 | ovs_strlcpy(ods->mfr_desc, p->mfr_desc, sizeof ods->mfr_desc); |
1594 | ovs_strlcpy(ods->hw_desc, p->hw_desc, sizeof ods->hw_desc); | |
1595 | ovs_strlcpy(ods->sw_desc, p->sw_desc, sizeof ods->sw_desc); | |
1596 | ovs_strlcpy(ods->serial_num, p->serial_desc, sizeof ods->serial_num); | |
1597 | ovs_strlcpy(ods->dp_desc, p->dp_desc, sizeof ods->dp_desc); | |
b0421aa2 | 1598 | ofconn_send_reply(ofconn, msg); |
064af421 BP |
1599 | |
1600 | return 0; | |
1601 | } | |
1602 | ||
064af421 | 1603 | static int |
3269c562 | 1604 | handle_table_stats_request(struct ofconn *ofconn, |
63f2140a | 1605 | const struct ofp_stats_msg *request) |
064af421 | 1606 | { |
64ff1d96 | 1607 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 BP |
1608 | struct ofp_table_stats *ots; |
1609 | struct ofpbuf *msg; | |
6c1491fb | 1610 | size_t i; |
064af421 | 1611 | |
63f2140a | 1612 | ofputil_make_stats_reply(sizeof(struct ofp_stats_msg), request, &msg); |
064af421 | 1613 | |
6c1491fb BP |
1614 | ots = ofpbuf_put_zeros(msg, sizeof *ots * p->n_tables); |
1615 | for (i = 0; i < p->n_tables; i++) { | |
1616 | ots[i].table_id = i; | |
35aa7a21 | 1617 | sprintf(ots[i].name, "table%zu", i); |
00794817 | 1618 | ots[i].wildcards = htonl(OFPFW_ALL); |
6c1491fb BP |
1619 | ots[i].max_entries = htonl(1000000); /* An arbitrary big number. */ |
1620 | ots[i].active_count = htonl(classifier_count(&p->tables[i])); | |
1621 | } | |
064af421 | 1622 | |
6c1491fb | 1623 | p->ofproto_class->get_tables(p, ots); |
064af421 | 1624 | |
b0421aa2 | 1625 | ofconn_send_reply(ofconn, msg); |
064af421 BP |
1626 | return 0; |
1627 | } | |
1628 | ||
abaad8cf | 1629 | static void |
63f2140a | 1630 | append_port_stat(struct ofport *port, struct list *replies) |
abaad8cf JP |
1631 | { |
1632 | struct netdev_stats stats; | |
1633 | struct ofp_port_stats *ops; | |
1634 | ||
d295e8e9 JP |
1635 | /* Intentionally ignore return value, since errors will set |
1636 | * 'stats' to all-1s, which is correct for OpenFlow, and | |
abaad8cf JP |
1637 | * netdev_get_stats() will log errors. */ |
1638 | netdev_get_stats(port->netdev, &stats); | |
1639 | ||
63f2140a | 1640 | ops = ofputil_append_stats_reply(sizeof *ops, replies); |
118c4676 | 1641 | ops->port_no = port->opp.port_no; |
abaad8cf | 1642 | memset(ops->pad, 0, sizeof ops->pad); |
c4617b3c BP |
1643 | put_32aligned_be64(&ops->rx_packets, htonll(stats.rx_packets)); |
1644 | put_32aligned_be64(&ops->tx_packets, htonll(stats.tx_packets)); | |
1645 | put_32aligned_be64(&ops->rx_bytes, htonll(stats.rx_bytes)); | |
1646 | put_32aligned_be64(&ops->tx_bytes, htonll(stats.tx_bytes)); | |
1647 | put_32aligned_be64(&ops->rx_dropped, htonll(stats.rx_dropped)); | |
1648 | put_32aligned_be64(&ops->tx_dropped, htonll(stats.tx_dropped)); | |
1649 | put_32aligned_be64(&ops->rx_errors, htonll(stats.rx_errors)); | |
1650 | put_32aligned_be64(&ops->tx_errors, htonll(stats.tx_errors)); | |
1651 | put_32aligned_be64(&ops->rx_frame_err, htonll(stats.rx_frame_errors)); | |
1652 | put_32aligned_be64(&ops->rx_over_err, htonll(stats.rx_over_errors)); | |
1653 | put_32aligned_be64(&ops->rx_crc_err, htonll(stats.rx_crc_errors)); | |
1654 | put_32aligned_be64(&ops->collisions, htonll(stats.collisions)); | |
abaad8cf JP |
1655 | } |
1656 | ||
064af421 | 1657 | static int |
63f2140a BP |
1658 | handle_port_stats_request(struct ofconn *ofconn, |
1659 | const struct ofp_port_stats_request *psr) | |
064af421 | 1660 | { |
64ff1d96 | 1661 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 | 1662 | struct ofport *port; |
63f2140a | 1663 | struct list replies; |
064af421 | 1664 | |
63f2140a | 1665 | ofputil_start_stats_reply(&psr->osm, &replies); |
abaad8cf | 1666 | if (psr->port_no != htons(OFPP_NONE)) { |
abe529af | 1667 | port = ofproto_get_port(p, ntohs(psr->port_no)); |
abaad8cf | 1668 | if (port) { |
63f2140a | 1669 | append_port_stat(port, &replies); |
abaad8cf JP |
1670 | } |
1671 | } else { | |
4e8e4213 | 1672 | HMAP_FOR_EACH (port, hmap_node, &p->ports) { |
63f2140a | 1673 | append_port_stat(port, &replies); |
abaad8cf | 1674 | } |
064af421 BP |
1675 | } |
1676 | ||
63f2140a | 1677 | ofconn_send_replies(ofconn, &replies); |
064af421 BP |
1678 | return 0; |
1679 | } | |
1680 | ||
c6ebb8fb | 1681 | static void |
588cd7b5 | 1682 | calc_flow_duration__(long long int start, uint32_t *sec, uint32_t *nsec) |
c6ebb8fb BP |
1683 | { |
1684 | long long int msecs = time_msec() - start; | |
588cd7b5 BP |
1685 | *sec = msecs / 1000; |
1686 | *nsec = (msecs % 1000) * (1000 * 1000); | |
1687 | } | |
1688 | ||
1689 | static void | |
1690 | calc_flow_duration(long long int start, ovs_be32 *sec_be, ovs_be32 *nsec_be) | |
1691 | { | |
1692 | uint32_t sec, nsec; | |
1693 | ||
1694 | calc_flow_duration__(start, &sec, &nsec); | |
1695 | *sec_be = htonl(sec); | |
1696 | *nsec_be = htonl(nsec); | |
c6ebb8fb BP |
1697 | } |
1698 | ||
064af421 | 1699 | static void |
5ecc9d81 | 1700 | put_ofp_flow_stats(struct ofconn *ofconn, struct rule *rule, |
63f2140a | 1701 | ovs_be16 out_port, struct list *replies) |
064af421 | 1702 | { |
abe529af | 1703 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 BP |
1704 | struct ofp_flow_stats *ofs; |
1705 | uint64_t packet_count, byte_count; | |
1706 | size_t act_len, len; | |
1707 | ||
5ecc9d81 | 1708 | if (rule_is_hidden(rule) || !rule_has_out_port(rule, out_port)) { |
064af421 BP |
1709 | return; |
1710 | } | |
1711 | ||
1712 | act_len = sizeof *rule->actions * rule->n_actions; | |
1713 | len = offsetof(struct ofp_flow_stats, actions) + act_len; | |
1714 | ||
abe529af | 1715 | ofproto->ofproto_class->rule_get_stats(rule, &packet_count, &byte_count); |
064af421 | 1716 | |
63f2140a | 1717 | ofs = ofputil_append_stats_reply(len, replies); |
064af421 | 1718 | ofs->length = htons(len); |
6c1491fb | 1719 | ofs->table_id = rule->table_id; |
064af421 | 1720 | ofs->pad = 0; |
b78f6b77 BP |
1721 | ofputil_cls_rule_to_match(&rule->cr, &ofs->match); |
1722 | put_32aligned_be64(&ofs->cookie, rule->flow_cookie); | |
c6ebb8fb | 1723 | calc_flow_duration(rule->created, &ofs->duration_sec, &ofs->duration_nsec); |
064af421 BP |
1724 | ofs->priority = htons(rule->cr.priority); |
1725 | ofs->idle_timeout = htons(rule->idle_timeout); | |
1726 | ofs->hard_timeout = htons(rule->hard_timeout); | |
39997502 | 1727 | memset(ofs->pad2, 0, sizeof ofs->pad2); |
c4617b3c BP |
1728 | put_32aligned_be64(&ofs->packet_count, htonll(packet_count)); |
1729 | put_32aligned_be64(&ofs->byte_count, htonll(byte_count)); | |
3dffcf07 BP |
1730 | if (rule->n_actions > 0) { |
1731 | memcpy(ofs->actions, rule->actions, act_len); | |
1732 | } | |
064af421 BP |
1733 | } |
1734 | ||
6c1491fb BP |
1735 | static struct classifier * |
1736 | first_matching_table(struct ofproto *ofproto, uint8_t table_id) | |
064af421 | 1737 | { |
6c1491fb BP |
1738 | if (table_id == 0xff) { |
1739 | return &ofproto->tables[0]; | |
1740 | } else if (table_id < ofproto->n_tables) { | |
1741 | return &ofproto->tables[table_id]; | |
a02e5331 BP |
1742 | } else { |
1743 | /* It would probably be better to reply with an error but there doesn't | |
1744 | * seem to be any appropriate value, so that might just be | |
1745 | * confusing. */ | |
1746 | VLOG_WARN_RL(&rl, "controller asked for invalid table %"PRIu8, | |
1747 | table_id); | |
6c1491fb | 1748 | return NULL; |
a02e5331 | 1749 | } |
064af421 BP |
1750 | } |
1751 | ||
6c1491fb BP |
1752 | static struct classifier * |
1753 | next_matching_table(struct ofproto *ofproto, | |
1754 | struct classifier *cls, uint8_t table_id) | |
1755 | { | |
1756 | return (table_id == 0xff && cls != &ofproto->tables[ofproto->n_tables - 1] | |
1757 | ? cls + 1 | |
1758 | : NULL); | |
1759 | } | |
1760 | ||
1761 | /* Assigns CLS to each classifier table, in turn, that matches TABLE_ID in | |
1762 | * OFPROTO: | |
1763 | * | |
1764 | * - If TABLE_ID is 0xff, this iterates over every classifier table in | |
1765 | * OFPROTO. | |
1766 | * | |
1767 | * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates | |
1768 | * only once, for that table. | |
1769 | * | |
1770 | * - Otherwise, TABLE_ID isn't valid for OFPROTO, so ofproto logs a warning | |
1771 | * and does not enter the loop at all. | |
1772 | * | |
1773 | * All parameters are evaluated multiple times. | |
1774 | */ | |
1775 | #define FOR_EACH_MATCHING_TABLE(CLS, TABLE_ID, OFPROTO) \ | |
1776 | for ((CLS) = first_matching_table(OFPROTO, TABLE_ID); \ | |
1777 | (CLS) != NULL; \ | |
1778 | (CLS) = next_matching_table(OFPROTO, CLS, TABLE_ID)) | |
1779 | ||
064af421 | 1780 | static int |
63f2140a BP |
1781 | handle_flow_stats_request(struct ofconn *ofconn, |
1782 | const struct ofp_flow_stats_request *fsr) | |
064af421 | 1783 | { |
64ff1d96 | 1784 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
6c1491fb BP |
1785 | struct classifier *cls; |
1786 | struct cls_rule target; | |
63f2140a | 1787 | struct list replies; |
064af421 | 1788 | |
064af421 | 1789 | COVERAGE_INC(ofproto_flows_req); |
63f2140a | 1790 | ofputil_start_stats_reply(&fsr->osm, &replies); |
00794817 | 1791 | ofputil_cls_rule_from_match(&fsr->match, 0, &target); |
6c1491fb | 1792 | FOR_EACH_MATCHING_TABLE (cls, fsr->table_id, ofproto) { |
5ecc9d81 | 1793 | struct cls_cursor cursor; |
5ecc9d81 | 1794 | struct rule *rule; |
3c4486a5 | 1795 | |
6c1491fb | 1796 | cls_cursor_init(&cursor, cls, &target); |
5ecc9d81 | 1797 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
63f2140a | 1798 | put_ofp_flow_stats(ofconn, rule, fsr->out_port, &replies); |
5ecc9d81 | 1799 | } |
3c4486a5 | 1800 | } |
63f2140a | 1801 | ofconn_send_replies(ofconn, &replies); |
3c4486a5 | 1802 | |
064af421 BP |
1803 | return 0; |
1804 | } | |
1805 | ||
09246b99 | 1806 | static void |
63f2140a | 1807 | put_nx_flow_stats(struct rule *rule, ovs_be16 out_port, struct list *replies) |
09246b99 | 1808 | { |
09246b99 BP |
1809 | struct nx_flow_stats *nfs; |
1810 | uint64_t packet_count, byte_count; | |
1811 | size_t act_len, start_len; | |
5ecc9d81 | 1812 | struct ofpbuf *reply; |
09246b99 | 1813 | |
5ecc9d81 | 1814 | if (rule_is_hidden(rule) || !rule_has_out_port(rule, out_port)) { |
09246b99 BP |
1815 | return; |
1816 | } | |
1817 | ||
abe529af BP |
1818 | rule->ofproto->ofproto_class->rule_get_stats(rule, |
1819 | &packet_count, &byte_count); | |
09246b99 BP |
1820 | |
1821 | act_len = sizeof *rule->actions * rule->n_actions; | |
1822 | ||
63f2140a BP |
1823 | reply = ofputil_reserve_stats_reply(sizeof *nfs + NXM_MAX_LEN + act_len, |
1824 | replies); | |
1825 | start_len = reply->size; | |
5ecc9d81 BP |
1826 | |
1827 | nfs = ofpbuf_put_uninit(reply, sizeof *nfs); | |
45984c6a | 1828 | nfs->table_id = rule->table_id; |
09246b99 BP |
1829 | nfs->pad = 0; |
1830 | calc_flow_duration(rule->created, &nfs->duration_sec, &nfs->duration_nsec); | |
1831 | nfs->cookie = rule->flow_cookie; | |
1832 | nfs->priority = htons(rule->cr.priority); | |
1833 | nfs->idle_timeout = htons(rule->idle_timeout); | |
1834 | nfs->hard_timeout = htons(rule->hard_timeout); | |
5ecc9d81 | 1835 | nfs->match_len = htons(nx_put_match(reply, &rule->cr)); |
09246b99 BP |
1836 | memset(nfs->pad2, 0, sizeof nfs->pad2); |
1837 | nfs->packet_count = htonll(packet_count); | |
1838 | nfs->byte_count = htonll(byte_count); | |
1839 | if (rule->n_actions > 0) { | |
5ecc9d81 | 1840 | ofpbuf_put(reply, rule->actions, act_len); |
09246b99 | 1841 | } |
5ecc9d81 | 1842 | nfs->length = htons(reply->size - start_len); |
09246b99 BP |
1843 | } |
1844 | ||
1845 | static int | |
63f2140a | 1846 | handle_nxst_flow(struct ofconn *ofconn, const struct ofp_stats_msg *osm) |
09246b99 | 1847 | { |
64ff1d96 | 1848 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
09246b99 | 1849 | struct nx_flow_stats_request *nfsr; |
6c1491fb | 1850 | struct classifier *cls; |
09246b99 | 1851 | struct cls_rule target; |
63f2140a | 1852 | struct list replies; |
d1e2cf21 | 1853 | struct ofpbuf b; |
09246b99 BP |
1854 | int error; |
1855 | ||
63f2140a | 1856 | ofpbuf_use_const(&b, osm, ntohs(osm->header.length)); |
d1e2cf21 | 1857 | |
09246b99 | 1858 | /* Dissect the message. */ |
bbc32a88 | 1859 | nfsr = ofpbuf_pull(&b, sizeof *nfsr); |
d1e2cf21 | 1860 | error = nx_pull_match(&b, ntohs(nfsr->match_len), 0, &target); |
09246b99 BP |
1861 | if (error) { |
1862 | return error; | |
1863 | } | |
d1e2cf21 BP |
1864 | if (b.size) { |
1865 | return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN); | |
1866 | } | |
09246b99 BP |
1867 | |
1868 | COVERAGE_INC(ofproto_flows_req); | |
63f2140a | 1869 | ofputil_start_stats_reply(osm, &replies); |
6c1491fb | 1870 | FOR_EACH_MATCHING_TABLE (cls, nfsr->table_id, ofproto) { |
5ecc9d81 BP |
1871 | struct cls_cursor cursor; |
1872 | struct rule *rule; | |
1873 | ||
6c1491fb | 1874 | cls_cursor_init(&cursor, cls, &target); |
5ecc9d81 | 1875 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
63f2140a | 1876 | put_nx_flow_stats(rule, nfsr->out_port, &replies); |
5ecc9d81 | 1877 | } |
3c4486a5 | 1878 | } |
63f2140a | 1879 | ofconn_send_replies(ofconn, &replies); |
5ecc9d81 | 1880 | |
09246b99 BP |
1881 | return 0; |
1882 | } | |
1883 | ||
4f2cad2c | 1884 | static void |
3394b5b6 | 1885 | flow_stats_ds(struct rule *rule, struct ds *results) |
4f2cad2c | 1886 | { |
4f2cad2c JP |
1887 | uint64_t packet_count, byte_count; |
1888 | size_t act_len = sizeof *rule->actions * rule->n_actions; | |
1889 | ||
abe529af BP |
1890 | rule->ofproto->ofproto_class->rule_get_stats(rule, |
1891 | &packet_count, &byte_count); | |
4f2cad2c | 1892 | |
6c1491fb BP |
1893 | if (rule->table_id != 0) { |
1894 | ds_put_format(results, "table_id=%"PRIu8", ", rule->table_id); | |
1895 | } | |
4f2cad2c JP |
1896 | ds_put_format(results, "duration=%llds, ", |
1897 | (time_msec() - rule->created) / 1000); | |
52ae00b3 | 1898 | ds_put_format(results, "priority=%u, ", rule->cr.priority); |
4f2cad2c JP |
1899 | ds_put_format(results, "n_packets=%"PRIu64", ", packet_count); |
1900 | ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count); | |
cb833cf6 | 1901 | cls_rule_format(&rule->cr, results); |
a5df0e72 | 1902 | ds_put_char(results, ','); |
3dffcf07 BP |
1903 | if (act_len > 0) { |
1904 | ofp_print_actions(results, &rule->actions->header, act_len); | |
3c8552c1 JP |
1905 | } else { |
1906 | ds_put_cstr(results, "drop"); | |
3dffcf07 | 1907 | } |
4f2cad2c JP |
1908 | ds_put_cstr(results, "\n"); |
1909 | } | |
1910 | ||
d295e8e9 | 1911 | /* Adds a pretty-printed description of all flows to 'results', including |
ee8b231c | 1912 | * hidden flows (e.g., set up by in-band control). */ |
4f2cad2c JP |
1913 | void |
1914 | ofproto_get_all_flows(struct ofproto *p, struct ds *results) | |
1915 | { | |
6c1491fb BP |
1916 | struct classifier *cls; |
1917 | ||
1918 | for (cls = &p->tables[0]; cls < &p->tables[p->n_tables]; cls++) { | |
1919 | struct cls_cursor cursor; | |
1920 | struct rule *rule; | |
064af421 | 1921 | |
6c1491fb BP |
1922 | cls_cursor_init(&cursor, cls, NULL); |
1923 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { | |
1924 | flow_stats_ds(rule, results); | |
1925 | } | |
064af421 | 1926 | } |
064af421 BP |
1927 | } |
1928 | ||
b5827b24 BP |
1929 | /* Obtains the NetFlow engine type and engine ID for 'ofproto' into |
1930 | * '*engine_type' and '*engine_id', respectively. */ | |
1931 | void | |
1932 | ofproto_get_netflow_ids(const struct ofproto *ofproto, | |
1933 | uint8_t *engine_type, uint8_t *engine_id) | |
1934 | { | |
abe529af | 1935 | ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id); |
b5827b24 BP |
1936 | } |
1937 | ||
a5610457 EJ |
1938 | /* Checks the fault status of CFM for 'ofp_port' within 'ofproto'. Returns 1 |
1939 | * if CFM is faulted (generally indiciating a connectivity problem), 0 if CFM | |
1940 | * is not faulted, and -1 if CFM is not enabled on 'ofp_port'. */ | |
1941 | int | |
1942 | ofproto_port_get_cfm_fault(const struct ofproto *ofproto, uint16_t ofp_port) | |
1943 | { | |
1944 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1945 | return (ofport && ofproto->ofproto_class->get_cfm_fault | |
1946 | ? ofproto->ofproto_class->get_cfm_fault(ofport) | |
1947 | : -1); | |
1948 | } | |
1949 | ||
76c93b22 BP |
1950 | static int |
1951 | handle_aggregate_stats_request(struct ofconn *ofconn, | |
1952 | const struct ofp_stats_msg *osm) | |
27d34fce | 1953 | { |
76c93b22 BP |
1954 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
1955 | struct flow_stats_request request; | |
1956 | struct ofputil_aggregate_stats stats; | |
6c1491fb | 1957 | struct classifier *cls; |
76c93b22 BP |
1958 | struct ofpbuf *reply; |
1959 | ovs_be16 out_port; | |
1960 | int error; | |
27d34fce | 1961 | |
76c93b22 BP |
1962 | error = ofputil_decode_flow_stats_request(&request, &osm->header); |
1963 | if (error) { | |
1964 | return error; | |
1965 | } | |
1966 | out_port = htons(request.out_port); | |
5ecc9d81 | 1967 | |
76c93b22 BP |
1968 | memset(&stats, 0, sizeof stats); |
1969 | FOR_EACH_MATCHING_TABLE (cls, request.table_id, ofproto) { | |
5ecc9d81 BP |
1970 | struct cls_cursor cursor; |
1971 | struct rule *rule; | |
3c4486a5 | 1972 | |
76c93b22 | 1973 | cls_cursor_init(&cursor, cls, &request.match); |
5ecc9d81 BP |
1974 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
1975 | if (!rule_is_hidden(rule) && rule_has_out_port(rule, out_port)) { | |
1976 | uint64_t packet_count; | |
1977 | uint64_t byte_count; | |
1978 | ||
abe529af BP |
1979 | ofproto->ofproto_class->rule_get_stats(rule, &packet_count, |
1980 | &byte_count); | |
5ecc9d81 | 1981 | |
76c93b22 BP |
1982 | stats.packet_count += packet_count; |
1983 | stats.byte_count += byte_count; | |
1984 | stats.flow_count++; | |
5ecc9d81 BP |
1985 | } |
1986 | } | |
3c4486a5 | 1987 | } |
27d34fce | 1988 | |
76c93b22 BP |
1989 | reply = ofputil_encode_aggregate_stats_reply(&stats, osm); |
1990 | ofconn_send_reply(ofconn, reply); | |
09246b99 BP |
1991 | |
1992 | return 0; | |
1993 | } | |
1994 | ||
c1c9c9c4 | 1995 | struct queue_stats_cbdata { |
ca0f572c | 1996 | struct ofport *ofport; |
63f2140a | 1997 | struct list replies; |
c1c9c9c4 BP |
1998 | }; |
1999 | ||
2000 | static void | |
db9220c3 | 2001 | put_queue_stats(struct queue_stats_cbdata *cbdata, uint32_t queue_id, |
c1c9c9c4 BP |
2002 | const struct netdev_queue_stats *stats) |
2003 | { | |
2004 | struct ofp_queue_stats *reply; | |
2005 | ||
63f2140a | 2006 | reply = ofputil_append_stats_reply(sizeof *reply, &cbdata->replies); |
118c4676 | 2007 | reply->port_no = cbdata->ofport->opp.port_no; |
c1c9c9c4 BP |
2008 | memset(reply->pad, 0, sizeof reply->pad); |
2009 | reply->queue_id = htonl(queue_id); | |
c4617b3c BP |
2010 | put_32aligned_be64(&reply->tx_bytes, htonll(stats->tx_bytes)); |
2011 | put_32aligned_be64(&reply->tx_packets, htonll(stats->tx_packets)); | |
2012 | put_32aligned_be64(&reply->tx_errors, htonll(stats->tx_errors)); | |
c1c9c9c4 BP |
2013 | } |
2014 | ||
2015 | static void | |
db9220c3 | 2016 | handle_queue_stats_dump_cb(uint32_t queue_id, |
c1c9c9c4 BP |
2017 | struct netdev_queue_stats *stats, |
2018 | void *cbdata_) | |
2019 | { | |
2020 | struct queue_stats_cbdata *cbdata = cbdata_; | |
2021 | ||
2022 | put_queue_stats(cbdata, queue_id, stats); | |
2023 | } | |
2024 | ||
2025 | static void | |
ca0f572c | 2026 | handle_queue_stats_for_port(struct ofport *port, uint32_t queue_id, |
c1c9c9c4 BP |
2027 | struct queue_stats_cbdata *cbdata) |
2028 | { | |
ca0f572c | 2029 | cbdata->ofport = port; |
c1c9c9c4 BP |
2030 | if (queue_id == OFPQ_ALL) { |
2031 | netdev_dump_queue_stats(port->netdev, | |
2032 | handle_queue_stats_dump_cb, cbdata); | |
2033 | } else { | |
2034 | struct netdev_queue_stats stats; | |
2035 | ||
1ac788f6 BP |
2036 | if (!netdev_get_queue_stats(port->netdev, queue_id, &stats)) { |
2037 | put_queue_stats(cbdata, queue_id, &stats); | |
2038 | } | |
c1c9c9c4 BP |
2039 | } |
2040 | } | |
2041 | ||
2042 | static int | |
63f2140a BP |
2043 | handle_queue_stats_request(struct ofconn *ofconn, |
2044 | const struct ofp_queue_stats_request *qsr) | |
c1c9c9c4 | 2045 | { |
64ff1d96 | 2046 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
c1c9c9c4 BP |
2047 | struct queue_stats_cbdata cbdata; |
2048 | struct ofport *port; | |
2049 | unsigned int port_no; | |
2050 | uint32_t queue_id; | |
2051 | ||
c1c9c9c4 BP |
2052 | COVERAGE_INC(ofproto_queue_req); |
2053 | ||
63f2140a | 2054 | ofputil_start_stats_reply(&qsr->osm, &cbdata.replies); |
c1c9c9c4 BP |
2055 | |
2056 | port_no = ntohs(qsr->port_no); | |
2057 | queue_id = ntohl(qsr->queue_id); | |
2058 | if (port_no == OFPP_ALL) { | |
4e8e4213 | 2059 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
ca0f572c | 2060 | handle_queue_stats_for_port(port, queue_id, &cbdata); |
c1c9c9c4 | 2061 | } |
abe529af BP |
2062 | } else if (port_no < OFPP_MAX) { |
2063 | port = ofproto_get_port(ofproto, port_no); | |
c1c9c9c4 | 2064 | if (port) { |
ca0f572c | 2065 | handle_queue_stats_for_port(port, queue_id, &cbdata); |
c1c9c9c4 BP |
2066 | } |
2067 | } else { | |
63f2140a | 2068 | ofpbuf_list_delete(&cbdata.replies); |
c1c9c9c4 BP |
2069 | return ofp_mkerr(OFPET_QUEUE_OP_FAILED, OFPQOFC_BAD_PORT); |
2070 | } | |
63f2140a | 2071 | ofconn_send_replies(ofconn, &cbdata.replies); |
c1c9c9c4 BP |
2072 | |
2073 | return 0; | |
2074 | } | |
2075 | ||
79eee1eb BP |
2076 | /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT |
2077 | * in which no matching flow already exists in the flow table. | |
2078 | * | |
2079 | * Adds the flow specified by 'ofm', which is followed by 'n_actions' | |
64ff1d96 | 2080 | * ofp_actions, to the ofproto's flow table. Returns 0 on success or an |
3269c562 | 2081 | * OpenFlow error code as encoded by ofp_mkerr() on failure. |
79eee1eb BP |
2082 | * |
2083 | * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id, | |
2084 | * if any. */ | |
064af421 | 2085 | static int |
3052b0c5 | 2086 | add_flow(struct ofconn *ofconn, struct flow_mod *fm) |
064af421 | 2087 | { |
64ff1d96 | 2088 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 BP |
2089 | struct ofpbuf *packet; |
2090 | struct rule *rule; | |
2091 | uint16_t in_port; | |
abe529af | 2092 | int buf_err; |
064af421 BP |
2093 | int error; |
2094 | ||
6c1491fb BP |
2095 | if (fm->flags & OFPFF_CHECK_OVERLAP) { |
2096 | struct classifier *cls; | |
2097 | ||
2098 | FOR_EACH_MATCHING_TABLE (cls, fm->table_id, p) { | |
2099 | if (classifier_rule_overlaps(cls, &fm->cr)) { | |
2100 | return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_OVERLAP); | |
2101 | } | |
2102 | } | |
49bdc010 JP |
2103 | } |
2104 | ||
abe529af | 2105 | buf_err = ofconn_pktbuf_retrieve(ofconn, fm->buffer_id, &packet, &in_port); |
0ab6decf | 2106 | error = rule_create(p, &fm->cr, fm->table_id, fm->actions, fm->n_actions, |
abe529af BP |
2107 | fm->idle_timeout, fm->hard_timeout, fm->cookie, |
2108 | fm->flags & OFPFF_SEND_FLOW_REM, &rule); | |
2109 | if (error) { | |
2110 | ofpbuf_delete(packet); | |
2111 | return error; | |
064af421 BP |
2112 | } |
2113 | ||
afe75089 | 2114 | if (packet) { |
5bf0e941 BP |
2115 | assert(!buf_err); |
2116 | return rule_execute(rule, in_port, packet); | |
afe75089 | 2117 | } |
abe529af | 2118 | return buf_err; |
064af421 BP |
2119 | } |
2120 | ||
6c1491fb BP |
2121 | /* Searches 'p' for an exact match for 'fm', in the table or tables indicated |
2122 | * by fm->table_id. Returns 0 if no match was found, 1 if exactly one match | |
2123 | * was found, 2 if more than one match was found. If exactly one match is | |
2124 | * found, sets '*rulep' to the match, otherwise to NULL. | |
2125 | * | |
2126 | * This implements the rules for "strict" matching explained in the comment on | |
2127 | * struct nxt_flow_mod_table_id in nicira-ext.h. | |
2128 | * | |
2129 | * Ignores hidden rules. */ | |
2130 | static int | |
2131 | find_flow_strict(struct ofproto *p, const struct flow_mod *fm, | |
2132 | struct rule **rulep) | |
064af421 | 2133 | { |
6c1491fb BP |
2134 | struct classifier *cls; |
2135 | ||
2136 | *rulep = NULL; | |
2137 | FOR_EACH_MATCHING_TABLE (cls, fm->table_id, p) { | |
2138 | struct rule *rule; | |
2139 | ||
2140 | rule = rule_from_cls_rule(classifier_find_rule_exactly(cls, &fm->cr)); | |
2141 | if (rule && !rule_is_hidden(rule)) { | |
2142 | if (*rulep) { | |
2143 | *rulep = NULL; | |
2144 | return 2; | |
2145 | } | |
2146 | *rulep = rule; | |
2147 | } | |
2148 | } | |
2149 | return *rulep != NULL; | |
79eee1eb | 2150 | } |
064af421 | 2151 | |
79eee1eb | 2152 | static int |
3269c562 | 2153 | send_buffered_packet(struct ofconn *ofconn, |
3052b0c5 | 2154 | struct rule *rule, uint32_t buffer_id) |
79eee1eb BP |
2155 | { |
2156 | struct ofpbuf *packet; | |
2157 | uint16_t in_port; | |
79eee1eb | 2158 | int error; |
064af421 | 2159 | |
3052b0c5 | 2160 | if (buffer_id == UINT32_MAX) { |
79eee1eb | 2161 | return 0; |
064af421 | 2162 | } |
79eee1eb | 2163 | |
10d0a1d2 | 2164 | error = ofconn_pktbuf_retrieve(ofconn, buffer_id, &packet, &in_port); |
79eee1eb BP |
2165 | if (error) { |
2166 | return error; | |
2167 | } | |
2168 | ||
5bf0e941 | 2169 | return rule_execute(rule, in_port, packet); |
064af421 | 2170 | } |
79eee1eb BP |
2171 | \f |
2172 | /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */ | |
064af421 BP |
2173 | |
2174 | struct modify_flows_cbdata { | |
2175 | struct ofproto *ofproto; | |
3052b0c5 | 2176 | const struct flow_mod *fm; |
79eee1eb | 2177 | struct rule *match; |
064af421 BP |
2178 | }; |
2179 | ||
abe529af | 2180 | static int modify_flow(const struct flow_mod *, struct rule *); |
79eee1eb BP |
2181 | |
2182 | /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code as | |
2183 | * encoded by ofp_mkerr() on failure. | |
2184 | * | |
2185 | * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id, | |
2186 | * if any. */ | |
2187 | static int | |
3052b0c5 | 2188 | modify_flows_loose(struct ofconn *ofconn, struct flow_mod *fm) |
79eee1eb | 2189 | { |
64ff1d96 | 2190 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
5ecc9d81 | 2191 | struct rule *match = NULL; |
6c1491fb | 2192 | struct classifier *cls; |
abe529af | 2193 | int error; |
79eee1eb | 2194 | |
abe529af | 2195 | error = 0; |
6c1491fb BP |
2196 | FOR_EACH_MATCHING_TABLE (cls, fm->table_id, p) { |
2197 | struct cls_cursor cursor; | |
2198 | struct rule *rule; | |
79eee1eb | 2199 | |
6c1491fb BP |
2200 | cls_cursor_init(&cursor, cls, &fm->cr); |
2201 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { | |
2202 | if (!rule_is_hidden(rule)) { | |
2203 | int retval = modify_flow(fm, rule); | |
2204 | if (!retval) { | |
2205 | match = rule; | |
2206 | } else { | |
2207 | error = retval; | |
2208 | } | |
abe529af | 2209 | } |
5ecc9d81 BP |
2210 | } |
2211 | } | |
79eee1eb | 2212 | |
abe529af BP |
2213 | if (error) { |
2214 | return error; | |
2215 | } else if (match) { | |
d6302b0f BP |
2216 | /* This credits the packet to whichever flow happened to match last. |
2217 | * That's weird. Maybe we should do a lookup for the flow that | |
2218 | * actually matches the packet? Who knows. */ | |
5ecc9d81 | 2219 | send_buffered_packet(ofconn, match, fm->buffer_id); |
79eee1eb BP |
2220 | return 0; |
2221 | } else { | |
3052b0c5 | 2222 | return add_flow(ofconn, fm); |
79eee1eb BP |
2223 | } |
2224 | } | |
2225 | ||
2226 | /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error | |
2227 | * code as encoded by ofp_mkerr() on failure. | |
2228 | * | |
2229 | * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id, | |
2230 | * if any. */ | |
2231 | static int | |
3052b0c5 | 2232 | modify_flow_strict(struct ofconn *ofconn, struct flow_mod *fm) |
79eee1eb | 2233 | { |
64ff1d96 | 2234 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
6c1491fb BP |
2235 | struct rule *rule; |
2236 | int error; | |
2237 | ||
2238 | switch (find_flow_strict(p, fm, &rule)) { | |
2239 | case 0: | |
3052b0c5 | 2240 | return add_flow(ofconn, fm); |
6c1491fb BP |
2241 | |
2242 | case 1: | |
2243 | error = modify_flow(fm, rule); | |
abe529af BP |
2244 | if (!error) { |
2245 | error = send_buffered_packet(ofconn, rule, fm->buffer_id); | |
2246 | } | |
2247 | return error; | |
6c1491fb BP |
2248 | |
2249 | case 2: | |
2250 | return 0; | |
2251 | ||
2252 | default: | |
2253 | NOT_REACHED(); | |
79eee1eb BP |
2254 | } |
2255 | } | |
2256 | ||
79eee1eb | 2257 | /* Implements core of OFPFC_MODIFY and OFPFC_MODIFY_STRICT where 'rule' has |
abe529af BP |
2258 | * been identified as a flow to be modified, by changing the rule's actions to |
2259 | * match those in 'ofm' (which is followed by 'n_actions' ofp_action[] | |
2260 | * structures). */ | |
064af421 | 2261 | static int |
abe529af | 2262 | modify_flow(const struct flow_mod *fm, struct rule *rule) |
064af421 | 2263 | { |
3052b0c5 | 2264 | size_t actions_len = fm->n_actions * sizeof *rule->actions; |
abe529af | 2265 | int error; |
79eee1eb | 2266 | |
3052b0c5 BP |
2267 | if (fm->n_actions == rule->n_actions |
2268 | && (!fm->n_actions | |
2269 | || !memcmp(fm->actions, rule->actions, actions_len))) { | |
abe529af BP |
2270 | error = 0; |
2271 | } else { | |
2272 | error = rule->ofproto->ofproto_class->rule_modify_actions( | |
2273 | rule, fm->actions, fm->n_actions); | |
2274 | if (!error) { | |
2275 | free(rule->actions); | |
2276 | rule->actions = (fm->n_actions | |
2277 | ? xmemdup(fm->actions, actions_len) | |
2278 | : NULL); | |
2279 | rule->n_actions = fm->n_actions; | |
2280 | } | |
79eee1eb BP |
2281 | } |
2282 | ||
abe529af BP |
2283 | if (!error) { |
2284 | rule->flow_cookie = fm->cookie; | |
2285 | } | |
79eee1eb | 2286 | |
abe529af | 2287 | return error; |
79eee1eb BP |
2288 | } |
2289 | \f | |
2290 | /* OFPFC_DELETE implementation. */ | |
2291 | ||
abe529af | 2292 | static void delete_flow(struct rule *, ovs_be16 out_port); |
79eee1eb BP |
2293 | |
2294 | /* Implements OFPFC_DELETE. */ | |
2295 | static void | |
3052b0c5 | 2296 | delete_flows_loose(struct ofproto *p, const struct flow_mod *fm) |
79eee1eb | 2297 | { |
6c1491fb | 2298 | struct classifier *cls; |
064af421 | 2299 | |
6c1491fb BP |
2300 | FOR_EACH_MATCHING_TABLE (cls, fm->table_id, p) { |
2301 | struct rule *rule, *next_rule; | |
2302 | struct cls_cursor cursor; | |
064af421 | 2303 | |
6c1491fb BP |
2304 | cls_cursor_init(&cursor, cls, &fm->cr); |
2305 | CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) { | |
2306 | delete_flow(rule, htons(fm->out_port)); | |
2307 | } | |
5ecc9d81 | 2308 | } |
064af421 BP |
2309 | } |
2310 | ||
79eee1eb BP |
2311 | /* Implements OFPFC_DELETE_STRICT. */ |
2312 | static void | |
3052b0c5 | 2313 | delete_flow_strict(struct ofproto *p, struct flow_mod *fm) |
79eee1eb | 2314 | { |
6c1491fb BP |
2315 | struct rule *rule; |
2316 | if (find_flow_strict(p, fm, &rule) == 1) { | |
abe529af | 2317 | delete_flow(rule, htons(fm->out_port)); |
79eee1eb BP |
2318 | } |
2319 | } | |
2320 | ||
79eee1eb BP |
2321 | /* Implements core of OFPFC_DELETE and OFPFC_DELETE_STRICT where 'rule' has |
2322 | * been identified as a flow to delete from 'p''s flow table, by deleting the | |
2323 | * flow and sending out a OFPT_FLOW_REMOVED message to any interested | |
2324 | * controller. | |
2325 | * | |
2326 | * Will not delete 'rule' if it is hidden. Will delete 'rule' only if | |
2327 | * 'out_port' is htons(OFPP_NONE) or if 'rule' actually outputs to the | |
2328 | * specified 'out_port'. */ | |
2329 | static void | |
abe529af | 2330 | delete_flow(struct rule *rule, ovs_be16 out_port) |
79eee1eb BP |
2331 | { |
2332 | if (rule_is_hidden(rule)) { | |
2333 | return; | |
2334 | } | |
2335 | ||
2336 | if (out_port != htons(OFPP_NONE) && !rule_has_out_port(rule, out_port)) { | |
2337 | return; | |
2338 | } | |
2339 | ||
abe529af | 2340 | ofproto_rule_send_removed(rule, OFPRR_DELETE); |
08944c1d | 2341 | ofproto_rule_destroy(rule); |
abe529af BP |
2342 | } |
2343 | ||
2344 | static void | |
2345 | ofproto_rule_send_removed(struct rule *rule, uint8_t reason) | |
2346 | { | |
2347 | struct ofputil_flow_removed fr; | |
2348 | ||
2349 | if (rule_is_hidden(rule) || !rule->send_flow_removed) { | |
2350 | return; | |
2351 | } | |
2352 | ||
2353 | fr.rule = rule->cr; | |
2354 | fr.cookie = rule->flow_cookie; | |
2355 | fr.reason = reason; | |
2356 | calc_flow_duration__(rule->created, &fr.duration_sec, &fr.duration_nsec); | |
2357 | fr.idle_timeout = rule->idle_timeout; | |
2358 | rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count, | |
2359 | &fr.byte_count); | |
2360 | ||
2361 | connmgr_send_flow_removed(rule->ofproto->connmgr, &fr); | |
2362 | } | |
2363 | ||
2364 | /* Sends an OpenFlow "flow removed" message with the given 'reason' (either | |
2365 | * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its | |
2366 | * ofproto. | |
2367 | * | |
2368 | * ofproto implementation ->run() functions should use this function to expire | |
2369 | * OpenFlow flows. */ | |
2370 | void | |
2371 | ofproto_rule_expire(struct rule *rule, uint8_t reason) | |
2372 | { | |
2373 | assert(reason == OFPRR_HARD_TIMEOUT || reason == OFPRR_IDLE_TIMEOUT); | |
2374 | ofproto_rule_send_removed(rule, reason); | |
08944c1d | 2375 | ofproto_rule_destroy(rule); |
79eee1eb BP |
2376 | } |
2377 | \f | |
064af421 | 2378 | static int |
2e4f5fcf | 2379 | handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2380 | { |
64ff1d96 | 2381 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
2e4f5fcf | 2382 | struct flow_mod fm; |
064af421 BP |
2383 | int error; |
2384 | ||
3052b0c5 | 2385 | error = reject_slave_controller(ofconn, "flow_mod"); |
9deba63b BP |
2386 | if (error) { |
2387 | return error; | |
2388 | } | |
3052b0c5 | 2389 | |
00794817 | 2390 | error = ofputil_decode_flow_mod(&fm, oh, |
6c1491fb | 2391 | ofconn_get_flow_mod_table_id(ofconn)); |
064af421 BP |
2392 | if (error) { |
2393 | return error; | |
2394 | } | |
2395 | ||
2e4f5fcf BP |
2396 | /* We do not support the emergency flow cache. It will hopefully get |
2397 | * dropped from OpenFlow in the near future. */ | |
2398 | if (fm.flags & OFPFF_EMERG) { | |
49bdc010 JP |
2399 | /* There isn't a good fit for an error code, so just state that the |
2400 | * flow table is full. */ | |
2401 | return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_ALL_TABLES_FULL); | |
2402 | } | |
2403 | ||
2e4f5fcf | 2404 | switch (fm.command) { |
3052b0c5 | 2405 | case OFPFC_ADD: |
2e4f5fcf | 2406 | return add_flow(ofconn, &fm); |
3052b0c5 BP |
2407 | |
2408 | case OFPFC_MODIFY: | |
2e4f5fcf | 2409 | return modify_flows_loose(ofconn, &fm); |
3052b0c5 BP |
2410 | |
2411 | case OFPFC_MODIFY_STRICT: | |
2e4f5fcf | 2412 | return modify_flow_strict(ofconn, &fm); |
3052b0c5 BP |
2413 | |
2414 | case OFPFC_DELETE: | |
2e4f5fcf | 2415 | delete_flows_loose(p, &fm); |
3052b0c5 BP |
2416 | return 0; |
2417 | ||
2418 | case OFPFC_DELETE_STRICT: | |
2e4f5fcf | 2419 | delete_flow_strict(p, &fm); |
3052b0c5 BP |
2420 | return 0; |
2421 | ||
2422 | default: | |
6c1491fb BP |
2423 | if (fm.command > 0xff) { |
2424 | VLOG_WARN_RL(&rl, "flow_mod has explicit table_id but " | |
2425 | "flow_mod_table_id extension is not enabled"); | |
2426 | } | |
3052b0c5 BP |
2427 | return ofp_mkerr(OFPET_FLOW_MOD_FAILED, OFPFMFC_BAD_COMMAND); |
2428 | } | |
2429 | } | |
2430 | ||
9deba63b | 2431 | static int |
d1e2cf21 | 2432 | handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh) |
9deba63b | 2433 | { |
d1e2cf21 | 2434 | struct nx_role_request *nrr = (struct nx_role_request *) oh; |
9deba63b BP |
2435 | struct nx_role_request *reply; |
2436 | struct ofpbuf *buf; | |
2437 | uint32_t role; | |
2438 | ||
1ce0a5fa | 2439 | if (ofconn_get_type(ofconn) != OFCONN_PRIMARY) { |
19a87e36 | 2440 | VLOG_WARN_RL(&rl, "ignoring role request on service connection"); |
9deba63b BP |
2441 | return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_EPERM); |
2442 | } | |
2443 | ||
2444 | role = ntohl(nrr->role); | |
2445 | if (role != NX_ROLE_OTHER && role != NX_ROLE_MASTER | |
2446 | && role != NX_ROLE_SLAVE) { | |
2447 | VLOG_WARN_RL(&rl, "received request for unknown role %"PRIu32, role); | |
2448 | ||
2449 | /* There's no good error code for this. */ | |
2450 | return ofp_mkerr(OFPET_BAD_REQUEST, -1); | |
2451 | } | |
2452 | ||
1ce0a5fa | 2453 | ofconn_set_role(ofconn, role); |
9deba63b | 2454 | |
d1e2cf21 | 2455 | reply = make_nxmsg_xid(sizeof *reply, NXT_ROLE_REPLY, oh->xid, &buf); |
9deba63b | 2456 | reply->role = htonl(role); |
b0421aa2 | 2457 | ofconn_send_reply(ofconn, buf); |
9deba63b BP |
2458 | |
2459 | return 0; | |
2460 | } | |
2461 | ||
6c1491fb BP |
2462 | static int |
2463 | handle_nxt_flow_mod_table_id(struct ofconn *ofconn, | |
2464 | const struct ofp_header *oh) | |
2465 | { | |
2466 | const struct nxt_flow_mod_table_id *msg | |
2467 | = (const struct nxt_flow_mod_table_id *) oh; | |
2468 | ||
2469 | ofconn_set_flow_mod_table_id(ofconn, msg->set != 0); | |
2470 | return 0; | |
2471 | } | |
2472 | ||
09246b99 | 2473 | static int |
d1e2cf21 | 2474 | handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh) |
09246b99 | 2475 | { |
d1e2cf21 BP |
2476 | const struct nxt_set_flow_format *msg |
2477 | = (const struct nxt_set_flow_format *) oh; | |
09246b99 | 2478 | uint32_t format; |
09246b99 BP |
2479 | |
2480 | format = ntohl(msg->format); | |
2481 | if (format == NXFF_OPENFLOW10 | |
09246b99 | 2482 | || format == NXFF_NXM) { |
f1dd9191 | 2483 | ofconn_set_flow_format(ofconn, format); |
09246b99 BP |
2484 | return 0; |
2485 | } else { | |
2486 | return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_EPERM); | |
2487 | } | |
2488 | } | |
2489 | ||
064af421 | 2490 | static int |
d1e2cf21 | 2491 | handle_barrier_request(struct ofconn *ofconn, const struct ofp_header *oh) |
246e61ea JP |
2492 | { |
2493 | struct ofp_header *ob; | |
2494 | struct ofpbuf *buf; | |
2495 | ||
2496 | /* Currently, everything executes synchronously, so we can just | |
2497 | * immediately send the barrier reply. */ | |
2498 | ob = make_openflow_xid(sizeof *ob, OFPT_BARRIER_REPLY, oh->xid, &buf); | |
b0421aa2 | 2499 | ofconn_send_reply(ofconn, buf); |
246e61ea JP |
2500 | return 0; |
2501 | } | |
2502 | ||
d1e2cf21 BP |
2503 | static int |
2504 | handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg) | |
064af421 | 2505 | { |
d1e2cf21 BP |
2506 | const struct ofp_header *oh = msg->data; |
2507 | const struct ofputil_msg_type *type; | |
064af421 BP |
2508 | int error; |
2509 | ||
d1e2cf21 BP |
2510 | error = ofputil_decode_msg_type(oh, &type); |
2511 | if (error) { | |
2512 | return error; | |
2513 | } | |
064af421 | 2514 | |
d1e2cf21 BP |
2515 | switch (ofputil_msg_type_code(type)) { |
2516 | /* OpenFlow requests. */ | |
2517 | case OFPUTIL_OFPT_ECHO_REQUEST: | |
2518 | return handle_echo_request(ofconn, oh); | |
064af421 | 2519 | |
d1e2cf21 BP |
2520 | case OFPUTIL_OFPT_FEATURES_REQUEST: |
2521 | return handle_features_request(ofconn, oh); | |
064af421 | 2522 | |
d1e2cf21 BP |
2523 | case OFPUTIL_OFPT_GET_CONFIG_REQUEST: |
2524 | return handle_get_config_request(ofconn, oh); | |
064af421 | 2525 | |
d1e2cf21 BP |
2526 | case OFPUTIL_OFPT_SET_CONFIG: |
2527 | return handle_set_config(ofconn, msg->data); | |
064af421 | 2528 | |
d1e2cf21 BP |
2529 | case OFPUTIL_OFPT_PACKET_OUT: |
2530 | return handle_packet_out(ofconn, oh); | |
064af421 | 2531 | |
d1e2cf21 BP |
2532 | case OFPUTIL_OFPT_PORT_MOD: |
2533 | return handle_port_mod(ofconn, oh); | |
064af421 | 2534 | |
d1e2cf21 | 2535 | case OFPUTIL_OFPT_FLOW_MOD: |
2e4f5fcf | 2536 | return handle_flow_mod(ofconn, oh); |
064af421 | 2537 | |
d1e2cf21 BP |
2538 | case OFPUTIL_OFPT_BARRIER_REQUEST: |
2539 | return handle_barrier_request(ofconn, oh); | |
064af421 | 2540 | |
d1e2cf21 BP |
2541 | /* OpenFlow replies. */ |
2542 | case OFPUTIL_OFPT_ECHO_REPLY: | |
2543 | return 0; | |
246e61ea | 2544 | |
d1e2cf21 | 2545 | /* Nicira extension requests. */ |
d1e2cf21 BP |
2546 | case OFPUTIL_NXT_ROLE_REQUEST: |
2547 | return handle_role_request(ofconn, oh); | |
2548 | ||
6c1491fb BP |
2549 | case OFPUTIL_NXT_FLOW_MOD_TABLE_ID: |
2550 | return handle_nxt_flow_mod_table_id(ofconn, oh); | |
d1e2cf21 BP |
2551 | |
2552 | case OFPUTIL_NXT_SET_FLOW_FORMAT: | |
2553 | return handle_nxt_set_flow_format(ofconn, oh); | |
2554 | ||
2555 | case OFPUTIL_NXT_FLOW_MOD: | |
2e4f5fcf | 2556 | return handle_flow_mod(ofconn, oh); |
d1e2cf21 BP |
2557 | |
2558 | /* OpenFlow statistics requests. */ | |
2559 | case OFPUTIL_OFPST_DESC_REQUEST: | |
63f2140a | 2560 | return handle_desc_stats_request(ofconn, msg->data); |
d1e2cf21 BP |
2561 | |
2562 | case OFPUTIL_OFPST_FLOW_REQUEST: | |
63f2140a | 2563 | return handle_flow_stats_request(ofconn, msg->data); |
d1e2cf21 BP |
2564 | |
2565 | case OFPUTIL_OFPST_AGGREGATE_REQUEST: | |
76c93b22 | 2566 | case OFPUTIL_NXST_AGGREGATE_REQUEST: |
63f2140a | 2567 | return handle_aggregate_stats_request(ofconn, msg->data); |
d1e2cf21 BP |
2568 | |
2569 | case OFPUTIL_OFPST_TABLE_REQUEST: | |
63f2140a | 2570 | return handle_table_stats_request(ofconn, msg->data); |
d1e2cf21 BP |
2571 | |
2572 | case OFPUTIL_OFPST_PORT_REQUEST: | |
63f2140a | 2573 | return handle_port_stats_request(ofconn, msg->data); |
d1e2cf21 BP |
2574 | |
2575 | case OFPUTIL_OFPST_QUEUE_REQUEST: | |
63f2140a | 2576 | return handle_queue_stats_request(ofconn, msg->data); |
d1e2cf21 BP |
2577 | |
2578 | /* Nicira extension statistics requests. */ | |
2579 | case OFPUTIL_NXST_FLOW_REQUEST: | |
63f2140a | 2580 | return handle_nxst_flow(ofconn, msg->data); |
d1e2cf21 | 2581 | |
d1e2cf21 BP |
2582 | case OFPUTIL_INVALID: |
2583 | case OFPUTIL_OFPT_HELLO: | |
2584 | case OFPUTIL_OFPT_ERROR: | |
2585 | case OFPUTIL_OFPT_FEATURES_REPLY: | |
2586 | case OFPUTIL_OFPT_GET_CONFIG_REPLY: | |
2587 | case OFPUTIL_OFPT_PACKET_IN: | |
2588 | case OFPUTIL_OFPT_FLOW_REMOVED: | |
2589 | case OFPUTIL_OFPT_PORT_STATUS: | |
2590 | case OFPUTIL_OFPT_BARRIER_REPLY: | |
2591 | case OFPUTIL_OFPT_QUEUE_GET_CONFIG_REQUEST: | |
2592 | case OFPUTIL_OFPT_QUEUE_GET_CONFIG_REPLY: | |
2593 | case OFPUTIL_OFPST_DESC_REPLY: | |
2594 | case OFPUTIL_OFPST_FLOW_REPLY: | |
2595 | case OFPUTIL_OFPST_QUEUE_REPLY: | |
2596 | case OFPUTIL_OFPST_PORT_REPLY: | |
2597 | case OFPUTIL_OFPST_TABLE_REPLY: | |
2598 | case OFPUTIL_OFPST_AGGREGATE_REPLY: | |
d1e2cf21 BP |
2599 | case OFPUTIL_NXT_ROLE_REPLY: |
2600 | case OFPUTIL_NXT_FLOW_REMOVED: | |
2601 | case OFPUTIL_NXST_FLOW_REPLY: | |
2602 | case OFPUTIL_NXST_AGGREGATE_REPLY: | |
064af421 BP |
2603 | default: |
2604 | if (VLOG_IS_WARN_ENABLED()) { | |
2605 | char *s = ofp_to_string(oh, ntohs(oh->length), 2); | |
2606 | VLOG_DBG_RL(&rl, "OpenFlow message ignored: %s", s); | |
2607 | free(s); | |
2608 | } | |
d1e2cf21 BP |
2609 | if (oh->type == OFPT_STATS_REQUEST || oh->type == OFPT_STATS_REPLY) { |
2610 | return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_STAT); | |
2611 | } else { | |
2612 | return ofp_mkerr(OFPET_BAD_REQUEST, OFPBRC_BAD_TYPE); | |
2613 | } | |
064af421 | 2614 | } |
d1e2cf21 | 2615 | } |
064af421 | 2616 | |
d1e2cf21 BP |
2617 | static void |
2618 | handle_openflow(struct ofconn *ofconn, struct ofpbuf *ofp_msg) | |
2619 | { | |
2620 | int error = handle_openflow__(ofconn, ofp_msg); | |
064af421 BP |
2621 | if (error) { |
2622 | send_error_oh(ofconn, ofp_msg->data, error); | |
2623 | } | |
d1e2cf21 | 2624 | COVERAGE_INC(ofproto_recv_openflow); |
064af421 BP |
2625 | } |
2626 | \f | |
064af421 | 2627 | static uint64_t |
fa60c019 | 2628 | pick_datapath_id(const struct ofproto *ofproto) |
064af421 | 2629 | { |
fa60c019 | 2630 | const struct ofport *port; |
064af421 | 2631 | |
abe529af | 2632 | port = ofproto_get_port(ofproto, OFPP_LOCAL); |
fa60c019 BP |
2633 | if (port) { |
2634 | uint8_t ea[ETH_ADDR_LEN]; | |
2635 | int error; | |
2636 | ||
2637 | error = netdev_get_etheraddr(port->netdev, ea); | |
064af421 BP |
2638 | if (!error) { |
2639 | return eth_addr_to_uint64(ea); | |
2640 | } | |
2641 | VLOG_WARN("could not get MAC address for %s (%s)", | |
fa60c019 | 2642 | netdev_get_name(port->netdev), strerror(error)); |
064af421 | 2643 | } |
fa60c019 | 2644 | return ofproto->fallback_dpid; |
064af421 BP |
2645 | } |
2646 | ||
2647 | static uint64_t | |
2648 | pick_fallback_dpid(void) | |
2649 | { | |
2650 | uint8_t ea[ETH_ADDR_LEN]; | |
70150daf | 2651 | eth_addr_nicira_random(ea); |
064af421 BP |
2652 | return eth_addr_to_uint64(ea); |
2653 | } | |
2654 | \f | |
abe529af | 2655 | /* unixctl commands. */ |
7aa697dd | 2656 | |
abe529af | 2657 | struct ofproto * |
2ac6bedd | 2658 | ofproto_lookup(const char *name) |
7aa697dd | 2659 | { |
2ac6bedd | 2660 | struct ofproto *ofproto; |
7aa697dd | 2661 | |
2ac6bedd BP |
2662 | HMAP_FOR_EACH_WITH_HASH (ofproto, hmap_node, hash_string(name, 0), |
2663 | &all_ofprotos) { | |
2664 | if (!strcmp(ofproto->name, name)) { | |
2665 | return ofproto; | |
2666 | } | |
7aa697dd | 2667 | } |
2ac6bedd | 2668 | return NULL; |
7aa697dd BP |
2669 | } |
2670 | ||
2671 | static void | |
7aa697dd BP |
2672 | ofproto_unixctl_list(struct unixctl_conn *conn, const char *arg OVS_UNUSED, |
2673 | void *aux OVS_UNUSED) | |
7aa697dd | 2674 | { |
7aa697dd | 2675 | struct ofproto *ofproto; |
7aa697dd | 2676 | struct ds results; |
7aa697dd | 2677 | |
7aa697dd | 2678 | ds_init(&results); |
2ac6bedd BP |
2679 | HMAP_FOR_EACH (ofproto, hmap_node, &all_ofprotos) { |
2680 | ds_put_format(&results, "%s\n", ofproto->name); | |
7aa697dd | 2681 | } |
7aa697dd BP |
2682 | unixctl_command_reply(conn, 200, ds_cstr(&results)); |
2683 | ds_destroy(&results); | |
7aa697dd BP |
2684 | } |
2685 | ||
2686 | static void | |
2687 | ofproto_unixctl_init(void) | |
2688 | { | |
2689 | static bool registered; | |
2690 | if (registered) { | |
2691 | return; | |
2692 | } | |
2693 | registered = true; | |
2694 | ||
2695 | unixctl_command_register("ofproto/list", ofproto_unixctl_list, NULL); | |
064af421 | 2696 | } |