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064af421 | 1 | /* |
e0edde6f | 2 | * Copyright (c) 2009, 2010, 2011, 2012 Nicira, Inc. |
43253595 | 3 | * Copyright (c) 2010 Jean Tourrilhes - HP-Labs. |
064af421 | 4 | * |
a14bc59f BP |
5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
6 | * you may not use this file except in compliance with the License. | |
7 | * You may obtain a copy of the License at: | |
064af421 | 8 | * |
a14bc59f BP |
9 | * http://www.apache.org/licenses/LICENSE-2.0 |
10 | * | |
11 | * Unless required by applicable law or agreed to in writing, software | |
12 | * distributed under the License is distributed on an "AS IS" BASIS, | |
13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
14 | * See the License for the specific language governing permissions and | |
15 | * limitations under the License. | |
064af421 BP |
16 | */ |
17 | ||
18 | #include <config.h> | |
19 | #include "ofproto.h" | |
20 | #include <errno.h> | |
21 | #include <inttypes.h> | |
064af421 BP |
22 | #include <stdbool.h> |
23 | #include <stdlib.h> | |
52a90c29 | 24 | #include "bitmap.h" |
10a24935 | 25 | #include "byte-order.h" |
064af421 | 26 | #include "classifier.h" |
19a87e36 | 27 | #include "connmgr.h" |
064af421 | 28 | #include "coverage.h" |
4f2cad2c | 29 | #include "dynamic-string.h" |
ca0f572c BP |
30 | #include "hash.h" |
31 | #include "hmap.h" | |
254750ce | 32 | #include "meta-flow.h" |
064af421 | 33 | #include "netdev.h" |
09246b99 | 34 | #include "nx-match.h" |
90bf1e07 | 35 | #include "ofp-errors.h" |
064af421 | 36 | #include "ofp-print.h" |
fa37b408 | 37 | #include "ofp-util.h" |
064af421 | 38 | #include "ofpbuf.h" |
5bee6e26 | 39 | #include "ofproto-provider.h" |
064af421 BP |
40 | #include "openflow/nicira-ext.h" |
41 | #include "openflow/openflow.h" | |
064af421 BP |
42 | #include "packets.h" |
43 | #include "pinsched.h" | |
44 | #include "pktbuf.h" | |
45 | #include "poll-loop.h" | |
254750ce | 46 | #include "random.h" |
064af421 | 47 | #include "shash.h" |
b3c01ed3 | 48 | #include "sset.h" |
064af421 | 49 | #include "timeval.h" |
c4617b3c | 50 | #include "unaligned.h" |
4f2cad2c | 51 | #include "unixctl.h" |
5136ce49 | 52 | #include "vlog.h" |
064af421 | 53 | |
d98e6007 | 54 | VLOG_DEFINE_THIS_MODULE(ofproto); |
064af421 | 55 | |
d76f09ea | 56 | COVERAGE_DEFINE(ofproto_error); |
d76f09ea | 57 | COVERAGE_DEFINE(ofproto_flush); |
d76f09ea | 58 | COVERAGE_DEFINE(ofproto_no_packet_in); |
d76f09ea BP |
59 | COVERAGE_DEFINE(ofproto_packet_out); |
60 | COVERAGE_DEFINE(ofproto_queue_req); | |
61 | COVERAGE_DEFINE(ofproto_recv_openflow); | |
62 | COVERAGE_DEFINE(ofproto_reinit_ports); | |
d76f09ea BP |
63 | COVERAGE_DEFINE(ofproto_uninstallable); |
64 | COVERAGE_DEFINE(ofproto_update_port); | |
65 | ||
7ee20df1 BP |
66 | enum ofproto_state { |
67 | S_OPENFLOW, /* Processing OpenFlow commands. */ | |
254750ce | 68 | S_EVICT, /* Evicting flows from over-limit tables. */ |
7ee20df1 BP |
69 | S_FLUSH, /* Deleting all flow table rules. */ |
70 | }; | |
71 | ||
72 | enum ofoperation_type { | |
73 | OFOPERATION_ADD, | |
74 | OFOPERATION_DELETE, | |
75 | OFOPERATION_MODIFY | |
76 | }; | |
77 | ||
78 | /* A single OpenFlow request can execute any number of operations. The | |
79 | * ofopgroup maintain OpenFlow state common to all of the operations, e.g. the | |
80 | * ofconn to which an error reply should be sent if necessary. | |
81 | * | |
82 | * ofproto initiates some operations internally. These operations are still | |
83 | * assigned to groups but will not have an associated ofconn. */ | |
84 | struct ofopgroup { | |
85 | struct ofproto *ofproto; /* Owning ofproto. */ | |
86 | struct list ofproto_node; /* In ofproto's "pending" list. */ | |
87 | struct list ops; /* List of "struct ofoperation"s. */ | |
88 | ||
89 | /* Data needed to send OpenFlow reply on failure or to send a buffered | |
90 | * packet on success. | |
91 | * | |
92 | * If list_is_empty(ofconn_node) then this ofopgroup never had an | |
93 | * associated ofconn or its ofconn's connection dropped after it initiated | |
94 | * the operation. In the latter case 'ofconn' is a wild pointer that | |
95 | * refers to freed memory, so the 'ofconn' member must be used only if | |
96 | * !list_is_empty(ofconn_node). | |
97 | */ | |
98 | struct list ofconn_node; /* In ofconn's list of pending opgroups. */ | |
99 | struct ofconn *ofconn; /* ofconn for reply (but see note above). */ | |
100 | struct ofp_header *request; /* Original request (truncated at 64 bytes). */ | |
101 | uint32_t buffer_id; /* Buffer id from original request. */ | |
102 | int error; /* 0 if no error yet, otherwise error code. */ | |
103 | }; | |
104 | ||
7024dffe BP |
105 | static struct ofopgroup *ofopgroup_create_unattached(struct ofproto *); |
106 | static struct ofopgroup *ofopgroup_create(struct ofproto *, struct ofconn *, | |
107 | const struct ofp_header *, | |
108 | uint32_t buffer_id); | |
7ee20df1 BP |
109 | static void ofopgroup_submit(struct ofopgroup *); |
110 | static void ofopgroup_destroy(struct ofopgroup *); | |
111 | ||
112 | /* A single flow table operation. */ | |
113 | struct ofoperation { | |
114 | struct ofopgroup *group; /* Owning group. */ | |
115 | struct list group_node; /* In ofopgroup's "ops" list. */ | |
116 | struct hmap_node hmap_node; /* In ofproto's "deletions" hmap. */ | |
117 | struct rule *rule; /* Rule being operated upon. */ | |
118 | enum ofoperation_type type; /* Type of operation. */ | |
119 | int status; /* -1 if pending, otherwise 0 or error code. */ | |
120 | struct rule *victim; /* OFOPERATION_ADDING: Replaced rule. */ | |
121 | union ofp_action *actions; /* OFOPERATION_MODIFYING: Replaced actions. */ | |
122 | int n_actions; /* OFOPERATION_MODIFYING: # of old actions. */ | |
123 | ovs_be64 flow_cookie; /* Rule's old flow cookie. */ | |
124 | }; | |
125 | ||
126 | static void ofoperation_create(struct ofopgroup *, struct rule *, | |
127 | enum ofoperation_type); | |
128 | static void ofoperation_destroy(struct ofoperation *); | |
129 | ||
d0918789 BP |
130 | /* oftable. */ |
131 | static void oftable_init(struct oftable *); | |
132 | static void oftable_destroy(struct oftable *); | |
878ae780 | 133 | |
254750ce BP |
134 | static void oftable_set_name(struct oftable *, const char *name); |
135 | ||
136 | static void oftable_disable_eviction(struct oftable *); | |
137 | static void oftable_enable_eviction(struct oftable *, | |
138 | const struct mf_subfield *fields, | |
139 | size_t n_fields); | |
140 | ||
d0918789 BP |
141 | static void oftable_remove_rule(struct rule *); |
142 | static struct rule *oftable_replace_rule(struct rule *); | |
143 | static void oftable_substitute_rule(struct rule *old, struct rule *new); | |
064af421 | 144 | |
254750ce BP |
145 | /* A set of rules within a single OpenFlow table (oftable) that have the same |
146 | * values for the oftable's eviction_fields. A rule to be evicted, when one is | |
147 | * needed, is taken from the eviction group that contains the greatest number | |
148 | * of rules. | |
149 | * | |
150 | * An oftable owns any number of eviction groups, each of which contains any | |
151 | * number of rules. | |
152 | * | |
153 | * Membership in an eviction group is imprecise, based on the hash of the | |
154 | * oftable's eviction_fields (in the eviction_group's id_node.hash member). | |
155 | * That is, if two rules have different eviction_fields, but those | |
156 | * eviction_fields hash to the same value, then they will belong to the same | |
157 | * eviction_group anyway. | |
158 | * | |
159 | * (When eviction is not enabled on an oftable, we don't track any eviction | |
160 | * groups, to save time and space.) */ | |
161 | struct eviction_group { | |
162 | struct hmap_node id_node; /* In oftable's "eviction_groups_by_id". */ | |
163 | struct heap_node size_node; /* In oftable's "eviction_groups_by_size". */ | |
164 | struct heap rules; /* Contains "struct rule"s. */ | |
165 | }; | |
166 | ||
167 | static struct rule *choose_rule_to_evict(struct oftable *); | |
168 | static void ofproto_evict(struct ofproto *); | |
169 | static uint32_t rule_eviction_priority(struct rule *); | |
f29152ca | 170 | |
d0918789 BP |
171 | /* ofport. */ |
172 | static void ofport_destroy__(struct ofport *); | |
173 | static void ofport_destroy(struct ofport *); | |
174 | ||
175 | static void update_port(struct ofproto *, const char *devname); | |
176 | static int init_ports(struct ofproto *); | |
177 | static void reinit_ports(struct ofproto *); | |
7ee20df1 | 178 | |
254750ce BP |
179 | /* rule. */ |
180 | static void ofproto_rule_destroy__(struct rule *); | |
181 | static void ofproto_rule_send_removed(struct rule *, uint8_t reason); | |
182 | static bool rule_is_modifiable(const struct rule *); | |
183 | static bool rule_is_hidden(const struct rule *); | |
184 | ||
d0918789 | 185 | /* OpenFlow. */ |
90bf1e07 BP |
186 | static enum ofperr add_flow(struct ofproto *, struct ofconn *, |
187 | const struct ofputil_flow_mod *, | |
188 | const struct ofp_header *); | |
254750ce | 189 | static void delete_flow__(struct rule *, struct ofopgroup *); |
7ee20df1 | 190 | static bool handle_openflow(struct ofconn *, struct ofpbuf *); |
90bf1e07 BP |
191 | static enum ofperr handle_flow_mod__(struct ofproto *, struct ofconn *, |
192 | const struct ofputil_flow_mod *, | |
d0918789 | 193 | const struct ofp_header *); |
f29152ca | 194 | |
d0918789 BP |
195 | /* ofproto. */ |
196 | static uint64_t pick_datapath_id(const struct ofproto *); | |
197 | static uint64_t pick_fallback_dpid(void); | |
198 | static void ofproto_destroy__(struct ofproto *); | |
ada3428f | 199 | static void update_mtu(struct ofproto *, struct ofport *); |
f29152ca | 200 | |
d0918789 | 201 | /* unixctl. */ |
abe529af | 202 | static void ofproto_unixctl_init(void); |
f29152ca | 203 | |
abe529af BP |
204 | /* All registered ofproto classes, in probe order. */ |
205 | static const struct ofproto_class **ofproto_classes; | |
206 | static size_t n_ofproto_classes; | |
207 | static size_t allocated_ofproto_classes; | |
7aa697dd | 208 | |
f797957a | 209 | /* Map from datapath name to struct ofproto, for use by unixctl commands. */ |
abe529af | 210 | static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos); |
ebe482fd | 211 | |
abe529af | 212 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
f29152ca | 213 | |
abe529af BP |
214 | static void |
215 | ofproto_initialize(void) | |
216 | { | |
217 | static bool inited; | |
f29152ca | 218 | |
abe529af BP |
219 | if (!inited) { |
220 | inited = true; | |
221 | ofproto_class_register(&ofproto_dpif_class); | |
222 | } | |
223 | } | |
f29152ca | 224 | |
abe529af BP |
225 | /* 'type' should be a normalized datapath type, as returned by |
226 | * ofproto_normalize_type(). Returns the corresponding ofproto_class | |
227 | * structure, or a null pointer if there is none registered for 'type'. */ | |
228 | static const struct ofproto_class * | |
229 | ofproto_class_find__(const char *type) | |
230 | { | |
231 | size_t i; | |
f29152ca | 232 | |
abe529af BP |
233 | ofproto_initialize(); |
234 | for (i = 0; i < n_ofproto_classes; i++) { | |
235 | const struct ofproto_class *class = ofproto_classes[i]; | |
236 | struct sset types; | |
237 | bool found; | |
064af421 | 238 | |
abe529af BP |
239 | sset_init(&types); |
240 | class->enumerate_types(&types); | |
241 | found = sset_contains(&types, type); | |
242 | sset_destroy(&types); | |
bcf84111 | 243 | |
abe529af BP |
244 | if (found) { |
245 | return class; | |
246 | } | |
247 | } | |
248 | VLOG_WARN("unknown datapath type %s", type); | |
249 | return NULL; | |
250 | } | |
064af421 | 251 | |
abe529af BP |
252 | /* Registers a new ofproto class. After successful registration, new ofprotos |
253 | * of that type can be created using ofproto_create(). */ | |
254 | int | |
255 | ofproto_class_register(const struct ofproto_class *new_class) | |
256 | { | |
257 | size_t i; | |
7aa697dd | 258 | |
abe529af BP |
259 | for (i = 0; i < n_ofproto_classes; i++) { |
260 | if (ofproto_classes[i] == new_class) { | |
261 | return EEXIST; | |
262 | } | |
263 | } | |
064af421 | 264 | |
abe529af BP |
265 | if (n_ofproto_classes >= allocated_ofproto_classes) { |
266 | ofproto_classes = x2nrealloc(ofproto_classes, | |
267 | &allocated_ofproto_classes, | |
268 | sizeof *ofproto_classes); | |
269 | } | |
270 | ofproto_classes[n_ofproto_classes++] = new_class; | |
271 | return 0; | |
272 | } | |
064af421 | 273 | |
abe529af BP |
274 | /* Unregisters a datapath provider. 'type' must have been previously |
275 | * registered and not currently be in use by any ofprotos. After | |
276 | * unregistration new datapaths of that type cannot be opened using | |
277 | * ofproto_create(). */ | |
278 | int | |
279 | ofproto_class_unregister(const struct ofproto_class *class) | |
280 | { | |
281 | size_t i; | |
76ce9432 | 282 | |
abe529af BP |
283 | for (i = 0; i < n_ofproto_classes; i++) { |
284 | if (ofproto_classes[i] == class) { | |
285 | for (i++; i < n_ofproto_classes; i++) { | |
286 | ofproto_classes[i - 1] = ofproto_classes[i]; | |
287 | } | |
288 | n_ofproto_classes--; | |
289 | return 0; | |
290 | } | |
291 | } | |
292 | VLOG_WARN("attempted to unregister an ofproto class that is not " | |
293 | "registered"); | |
294 | return EAFNOSUPPORT; | |
295 | } | |
4a4cdb3b | 296 | |
f79e673f BP |
297 | /* Clears 'types' and enumerates all registered ofproto types into it. The |
298 | * caller must first initialize the sset. */ | |
299 | void | |
300 | ofproto_enumerate_types(struct sset *types) | |
301 | { | |
abe529af | 302 | size_t i; |
064af421 | 303 | |
abe529af BP |
304 | ofproto_initialize(); |
305 | for (i = 0; i < n_ofproto_classes; i++) { | |
306 | ofproto_classes[i]->enumerate_types(types); | |
307 | } | |
f79e673f | 308 | } |
064af421 | 309 | |
f79e673f BP |
310 | /* Returns the fully spelled out name for the given ofproto 'type'. |
311 | * | |
312 | * Normalized type string can be compared with strcmp(). Unnormalized type | |
313 | * string might be the same even if they have different spellings. */ | |
314 | const char * | |
315 | ofproto_normalize_type(const char *type) | |
316 | { | |
abe529af | 317 | return type && type[0] ? type : "system"; |
f79e673f | 318 | } |
064af421 | 319 | |
f79e673f BP |
320 | /* Clears 'names' and enumerates the names of all known created ofprotos with |
321 | * the given 'type'. The caller must first initialize the sset. Returns 0 if | |
322 | * successful, otherwise a positive errno value. | |
323 | * | |
324 | * Some kinds of datapaths might not be practically enumerable. This is not | |
325 | * considered an error. */ | |
326 | int | |
327 | ofproto_enumerate_names(const char *type, struct sset *names) | |
328 | { | |
abe529af BP |
329 | const struct ofproto_class *class = ofproto_class_find__(type); |
330 | return class ? class->enumerate_names(type, names) : EAFNOSUPPORT; | |
331 | } | |
7aa697dd | 332 | |
064af421 | 333 | int |
abe529af | 334 | ofproto_create(const char *datapath_name, const char *datapath_type, |
064af421 BP |
335 | struct ofproto **ofprotop) |
336 | { | |
abe529af BP |
337 | const struct ofproto_class *class; |
338 | struct ofproto *ofproto; | |
064af421 BP |
339 | int error; |
340 | ||
341 | *ofprotop = NULL; | |
342 | ||
abe529af | 343 | ofproto_initialize(); |
7aa697dd BP |
344 | ofproto_unixctl_init(); |
345 | ||
abe529af BP |
346 | datapath_type = ofproto_normalize_type(datapath_type); |
347 | class = ofproto_class_find__(datapath_type); | |
348 | if (!class) { | |
349 | VLOG_WARN("could not create datapath %s of unknown type %s", | |
350 | datapath_name, datapath_type); | |
351 | return EAFNOSUPPORT; | |
064af421 BP |
352 | } |
353 | ||
abe529af BP |
354 | ofproto = class->alloc(); |
355 | if (!ofproto) { | |
356 | VLOG_ERR("failed to allocate datapath %s of type %s", | |
357 | datapath_name, datapath_type); | |
358 | return ENOMEM; | |
359 | } | |
360 | ||
361 | /* Initialize. */ | |
362 | memset(ofproto, 0, sizeof *ofproto); | |
363 | ofproto->ofproto_class = class; | |
364 | ofproto->name = xstrdup(datapath_name); | |
365 | ofproto->type = xstrdup(datapath_type); | |
366 | hmap_insert(&all_ofprotos, &ofproto->hmap_node, | |
367 | hash_string(ofproto->name, 0)); | |
368 | ofproto->datapath_id = 0; | |
084f5290 SH |
369 | ofproto_set_flow_eviction_threshold(ofproto, |
370 | OFPROTO_FLOW_EVICTON_THRESHOLD_DEFAULT); | |
8402c74b | 371 | ofproto->forward_bpdu = false; |
abe529af BP |
372 | ofproto->fallback_dpid = pick_fallback_dpid(); |
373 | ofproto->mfr_desc = xstrdup(DEFAULT_MFR_DESC); | |
374 | ofproto->hw_desc = xstrdup(DEFAULT_HW_DESC); | |
375 | ofproto->sw_desc = xstrdup(DEFAULT_SW_DESC); | |
376 | ofproto->serial_desc = xstrdup(DEFAULT_SERIAL_DESC); | |
377 | ofproto->dp_desc = xstrdup(DEFAULT_DP_DESC); | |
7257b535 | 378 | ofproto->frag_handling = OFPC_FRAG_NORMAL; |
abe529af BP |
379 | hmap_init(&ofproto->ports); |
380 | shash_init(&ofproto->port_by_name); | |
6c1491fb BP |
381 | ofproto->tables = NULL; |
382 | ofproto->n_tables = 0; | |
abe529af | 383 | ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name); |
7ee20df1 BP |
384 | ofproto->state = S_OPENFLOW; |
385 | list_init(&ofproto->pending); | |
dd5616b3 | 386 | ofproto->n_pending = 0; |
7ee20df1 | 387 | hmap_init(&ofproto->deletions); |
52a90c29 BP |
388 | ofproto->vlan_bitmap = NULL; |
389 | ofproto->vlans_changed = false; | |
ada3428f | 390 | ofproto->min_mtu = INT_MAX; |
abe529af | 391 | |
0f5f95a9 | 392 | error = ofproto->ofproto_class->construct(ofproto); |
19a87e36 | 393 | if (error) { |
abe529af BP |
394 | VLOG_ERR("failed to open datapath %s: %s", |
395 | datapath_name, strerror(error)); | |
396 | ofproto_destroy__(ofproto); | |
19a87e36 BP |
397 | return error; |
398 | } | |
073e2a6f | 399 | |
0f5f95a9 | 400 | assert(ofproto->n_tables); |
19a87e36 | 401 | |
abe529af BP |
402 | ofproto->datapath_id = pick_datapath_id(ofproto); |
403 | VLOG_INFO("using datapath ID %016"PRIx64, ofproto->datapath_id); | |
404 | init_ports(ofproto); | |
7aa697dd | 405 | |
abe529af | 406 | *ofprotop = ofproto; |
064af421 BP |
407 | return 0; |
408 | } | |
409 | ||
0f5f95a9 BP |
410 | void |
411 | ofproto_init_tables(struct ofproto *ofproto, int n_tables) | |
412 | { | |
413 | struct oftable *table; | |
414 | ||
415 | assert(!ofproto->n_tables); | |
416 | assert(n_tables >= 1 && n_tables <= 255); | |
417 | ||
418 | ofproto->n_tables = n_tables; | |
419 | ofproto->tables = xmalloc(n_tables * sizeof *ofproto->tables); | |
420 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
421 | oftable_init(table); | |
422 | } | |
423 | } | |
424 | ||
064af421 BP |
425 | void |
426 | ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id) | |
427 | { | |
428 | uint64_t old_dpid = p->datapath_id; | |
fa60c019 | 429 | p->datapath_id = datapath_id ? datapath_id : pick_datapath_id(p); |
064af421 | 430 | if (p->datapath_id != old_dpid) { |
b123cc3c | 431 | VLOG_INFO("datapath ID changed to %016"PRIx64, p->datapath_id); |
76ce9432 BP |
432 | |
433 | /* Force all active connections to reconnect, since there is no way to | |
434 | * notify a controller that the datapath ID has changed. */ | |
fa05809b | 435 | ofproto_reconnect_controllers(p); |
064af421 BP |
436 | } |
437 | } | |
438 | ||
76ce9432 BP |
439 | void |
440 | ofproto_set_controllers(struct ofproto *p, | |
441 | const struct ofproto_controller *controllers, | |
442 | size_t n_controllers) | |
443 | { | |
19a87e36 | 444 | connmgr_set_controllers(p->connmgr, controllers, n_controllers); |
064af421 BP |
445 | } |
446 | ||
31681a5d JP |
447 | void |
448 | ofproto_set_fail_mode(struct ofproto *p, enum ofproto_fail_mode fail_mode) | |
449 | { | |
19a87e36 | 450 | connmgr_set_fail_mode(p->connmgr, fail_mode); |
31681a5d JP |
451 | } |
452 | ||
fa05809b BP |
453 | /* Drops the connections between 'ofproto' and all of its controllers, forcing |
454 | * them to reconnect. */ | |
455 | void | |
456 | ofproto_reconnect_controllers(struct ofproto *ofproto) | |
457 | { | |
19a87e36 | 458 | connmgr_reconnect(ofproto->connmgr); |
917e50e1 BP |
459 | } |
460 | ||
461 | /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s | |
462 | * in-band control should guarantee access, in the same way that in-band | |
463 | * control guarantees access to OpenFlow controllers. */ | |
464 | void | |
465 | ofproto_set_extra_in_band_remotes(struct ofproto *ofproto, | |
466 | const struct sockaddr_in *extras, size_t n) | |
467 | { | |
19a87e36 | 468 | connmgr_set_extra_in_band_remotes(ofproto->connmgr, extras, n); |
917e50e1 BP |
469 | } |
470 | ||
b1da6250 BP |
471 | /* Sets the OpenFlow queue used by flows set up by in-band control on |
472 | * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control | |
473 | * flows will use the default queue. */ | |
474 | void | |
475 | ofproto_set_in_band_queue(struct ofproto *ofproto, int queue_id) | |
476 | { | |
19a87e36 | 477 | connmgr_set_in_band_queue(ofproto->connmgr, queue_id); |
b1da6250 BP |
478 | } |
479 | ||
084f5290 SH |
480 | /* Sets the number of flows at which eviction from the kernel flow table |
481 | * will occur. */ | |
482 | void | |
483 | ofproto_set_flow_eviction_threshold(struct ofproto *ofproto, unsigned threshold) | |
484 | { | |
485 | if (threshold < OFPROTO_FLOW_EVICTION_THRESHOLD_MIN) { | |
486 | ofproto->flow_eviction_threshold = OFPROTO_FLOW_EVICTION_THRESHOLD_MIN; | |
487 | } else { | |
488 | ofproto->flow_eviction_threshold = threshold; | |
489 | } | |
490 | } | |
491 | ||
b53055f4 | 492 | /* If forward_bpdu is true, the NORMAL action will forward frames with |
8402c74b SS |
493 | * reserved (e.g. STP) destination Ethernet addresses. if forward_bpdu is false, |
494 | * the NORMAL action will drop these frames. */ | |
495 | void | |
496 | ofproto_set_forward_bpdu(struct ofproto *ofproto, bool forward_bpdu) | |
497 | { | |
498 | bool old_val = ofproto->forward_bpdu; | |
499 | ofproto->forward_bpdu = forward_bpdu; | |
500 | if (old_val != ofproto->forward_bpdu) { | |
501 | if (ofproto->ofproto_class->forward_bpdu_changed) { | |
502 | ofproto->ofproto_class->forward_bpdu_changed(ofproto); | |
503 | } | |
b53055f4 | 504 | } |
8402c74b SS |
505 | } |
506 | ||
e764773c BP |
507 | /* Sets the MAC aging timeout for the OFPP_NORMAL action on 'ofproto' to |
508 | * 'idle_time', in seconds. */ | |
509 | void | |
510 | ofproto_set_mac_idle_time(struct ofproto *ofproto, unsigned idle_time) | |
511 | { | |
512 | if (ofproto->ofproto_class->set_mac_idle_time) { | |
513 | ofproto->ofproto_class->set_mac_idle_time(ofproto, idle_time); | |
514 | } | |
515 | } | |
516 | ||
064af421 BP |
517 | void |
518 | ofproto_set_desc(struct ofproto *p, | |
5a719c38 JP |
519 | const char *mfr_desc, const char *hw_desc, |
520 | const char *sw_desc, const char *serial_desc, | |
8abc4ed7 | 521 | const char *dp_desc) |
064af421 | 522 | { |
5a719c38 JP |
523 | struct ofp_desc_stats *ods; |
524 | ||
525 | if (mfr_desc) { | |
526 | if (strlen(mfr_desc) >= sizeof ods->mfr_desc) { | |
527 | VLOG_WARN("truncating mfr_desc, must be less than %zu characters", | |
528 | sizeof ods->mfr_desc); | |
529 | } | |
530 | free(p->mfr_desc); | |
531 | p->mfr_desc = xstrdup(mfr_desc); | |
064af421 | 532 | } |
5a719c38 JP |
533 | if (hw_desc) { |
534 | if (strlen(hw_desc) >= sizeof ods->hw_desc) { | |
535 | VLOG_WARN("truncating hw_desc, must be less than %zu characters", | |
536 | sizeof ods->hw_desc); | |
537 | } | |
538 | free(p->hw_desc); | |
539 | p->hw_desc = xstrdup(hw_desc); | |
064af421 | 540 | } |
5a719c38 JP |
541 | if (sw_desc) { |
542 | if (strlen(sw_desc) >= sizeof ods->sw_desc) { | |
543 | VLOG_WARN("truncating sw_desc, must be less than %zu characters", | |
544 | sizeof ods->sw_desc); | |
545 | } | |
546 | free(p->sw_desc); | |
547 | p->sw_desc = xstrdup(sw_desc); | |
548 | } | |
549 | if (serial_desc) { | |
550 | if (strlen(serial_desc) >= sizeof ods->serial_num) { | |
551 | VLOG_WARN("truncating serial_desc, must be less than %zu " | |
552 | "characters", | |
553 | sizeof ods->serial_num); | |
554 | } | |
555 | free(p->serial_desc); | |
556 | p->serial_desc = xstrdup(serial_desc); | |
064af421 | 557 | } |
8abc4ed7 | 558 | if (dp_desc) { |
5a719c38 JP |
559 | if (strlen(dp_desc) >= sizeof ods->dp_desc) { |
560 | VLOG_WARN("truncating dp_desc, must be less than %zu characters", | |
561 | sizeof ods->dp_desc); | |
562 | } | |
8abc4ed7 JP |
563 | free(p->dp_desc); |
564 | p->dp_desc = xstrdup(dp_desc); | |
565 | } | |
064af421 BP |
566 | } |
567 | ||
064af421 | 568 | int |
81e2083f | 569 | ofproto_set_snoops(struct ofproto *ofproto, const struct sset *snoops) |
064af421 | 570 | { |
19a87e36 | 571 | return connmgr_set_snoops(ofproto->connmgr, snoops); |
064af421 BP |
572 | } |
573 | ||
574 | int | |
0193b2af JG |
575 | ofproto_set_netflow(struct ofproto *ofproto, |
576 | const struct netflow_options *nf_options) | |
064af421 | 577 | { |
abe529af BP |
578 | if (nf_options && sset_is_empty(&nf_options->collectors)) { |
579 | nf_options = NULL; | |
580 | } | |
581 | ||
582 | if (ofproto->ofproto_class->set_netflow) { | |
583 | return ofproto->ofproto_class->set_netflow(ofproto, nf_options); | |
064af421 | 584 | } else { |
abe529af | 585 | return nf_options ? EOPNOTSUPP : 0; |
064af421 BP |
586 | } |
587 | } | |
588 | ||
abe529af | 589 | int |
72b06300 BP |
590 | ofproto_set_sflow(struct ofproto *ofproto, |
591 | const struct ofproto_sflow_options *oso) | |
592 | { | |
abe529af BP |
593 | if (oso && sset_is_empty(&oso->targets)) { |
594 | oso = NULL; | |
595 | } | |
72b06300 | 596 | |
abe529af BP |
597 | if (ofproto->ofproto_class->set_sflow) { |
598 | return ofproto->ofproto_class->set_sflow(ofproto, oso); | |
72b06300 | 599 | } else { |
abe529af | 600 | return oso ? EOPNOTSUPP : 0; |
72b06300 BP |
601 | } |
602 | } | |
e7934396 | 603 | \f |
21f7563c JP |
604 | /* Spanning Tree Protocol (STP) configuration. */ |
605 | ||
606 | /* Configures STP on 'ofproto' using the settings defined in 's'. If | |
607 | * 's' is NULL, disables STP. | |
608 | * | |
609 | * Returns 0 if successful, otherwise a positive errno value. */ | |
610 | int | |
611 | ofproto_set_stp(struct ofproto *ofproto, | |
612 | const struct ofproto_stp_settings *s) | |
613 | { | |
614 | return (ofproto->ofproto_class->set_stp | |
615 | ? ofproto->ofproto_class->set_stp(ofproto, s) | |
616 | : EOPNOTSUPP); | |
617 | } | |
618 | ||
619 | /* Retrieves STP status of 'ofproto' and stores it in 's'. If the | |
620 | * 'enabled' member of 's' is false, then the other members are not | |
621 | * meaningful. | |
622 | * | |
623 | * Returns 0 if successful, otherwise a positive errno value. */ | |
624 | int | |
625 | ofproto_get_stp_status(struct ofproto *ofproto, | |
626 | struct ofproto_stp_status *s) | |
627 | { | |
628 | return (ofproto->ofproto_class->get_stp_status | |
629 | ? ofproto->ofproto_class->get_stp_status(ofproto, s) | |
630 | : EOPNOTSUPP); | |
631 | } | |
632 | ||
633 | /* Configures STP on 'ofp_port' of 'ofproto' using the settings defined | |
634 | * in 's'. The caller is responsible for assigning STP port numbers | |
635 | * (using the 'port_num' member in the range of 1 through 255, inclusive) | |
636 | * and ensuring there are no duplicates. If the 's' is NULL, then STP | |
637 | * is disabled on the port. | |
638 | * | |
639 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
640 | int | |
641 | ofproto_port_set_stp(struct ofproto *ofproto, uint16_t ofp_port, | |
642 | const struct ofproto_port_stp_settings *s) | |
643 | { | |
644 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
645 | if (!ofport) { | |
646 | VLOG_WARN("%s: cannot configure STP on nonexistent port %"PRIu16, | |
647 | ofproto->name, ofp_port); | |
648 | return ENODEV; | |
649 | } | |
650 | ||
651 | return (ofproto->ofproto_class->set_stp_port | |
652 | ? ofproto->ofproto_class->set_stp_port(ofport, s) | |
653 | : EOPNOTSUPP); | |
654 | } | |
655 | ||
656 | /* Retrieves STP port status of 'ofp_port' on 'ofproto' and stores it in | |
657 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
658 | * are not meaningful. | |
659 | * | |
660 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
661 | int | |
662 | ofproto_port_get_stp_status(struct ofproto *ofproto, uint16_t ofp_port, | |
663 | struct ofproto_port_stp_status *s) | |
664 | { | |
665 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
666 | if (!ofport) { | |
b0a5c43b JP |
667 | VLOG_WARN_RL(&rl, "%s: cannot get STP status on nonexistent " |
668 | "port %"PRIu16, ofproto->name, ofp_port); | |
21f7563c JP |
669 | return ENODEV; |
670 | } | |
671 | ||
672 | return (ofproto->ofproto_class->get_stp_port_status | |
673 | ? ofproto->ofproto_class->get_stp_port_status(ofport, s) | |
674 | : EOPNOTSUPP); | |
675 | } | |
676 | \f | |
8b36f51e EJ |
677 | /* Queue DSCP configuration. */ |
678 | ||
679 | /* Registers meta-data associated with the 'n_qdscp' Qualities of Service | |
680 | * 'queues' attached to 'ofport'. This data is not intended to be sufficient | |
681 | * to implement QoS. Instead, it is used to implement features which require | |
682 | * knowledge of what queues exist on a port, and some basic information about | |
683 | * them. | |
684 | * | |
685 | * Returns 0 if successful, otherwise a positive errno value. */ | |
686 | int | |
687 | ofproto_port_set_queues(struct ofproto *ofproto, uint16_t ofp_port, | |
688 | const struct ofproto_port_queue *queues, | |
689 | size_t n_queues) | |
690 | { | |
691 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
692 | ||
693 | if (!ofport) { | |
694 | VLOG_WARN("%s: cannot set queues on nonexistent port %"PRIu16, | |
695 | ofproto->name, ofp_port); | |
696 | return ENODEV; | |
697 | } | |
698 | ||
699 | return (ofproto->ofproto_class->set_queues | |
700 | ? ofproto->ofproto_class->set_queues(ofport, queues, n_queues) | |
701 | : EOPNOTSUPP); | |
702 | } | |
703 | \f | |
e7934396 BP |
704 | /* Connectivity Fault Management configuration. */ |
705 | ||
892815f5 | 706 | /* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */ |
e7934396 | 707 | void |
892815f5 | 708 | ofproto_port_clear_cfm(struct ofproto *ofproto, uint16_t ofp_port) |
e7934396 | 709 | { |
abe529af BP |
710 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
711 | if (ofport && ofproto->ofproto_class->set_cfm) { | |
a5610457 | 712 | ofproto->ofproto_class->set_cfm(ofport, NULL); |
e7934396 BP |
713 | } |
714 | } | |
72b06300 | 715 | |
892815f5 | 716 | /* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes |
93b8df38 EJ |
717 | * basic configuration from the configuration members in 'cfm', and the remote |
718 | * maintenance point ID from remote_mpid. Ignores the statistics members of | |
719 | * 'cfm'. | |
e7934396 | 720 | * |
892815f5 | 721 | * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */ |
e7934396 | 722 | void |
892815f5 | 723 | ofproto_port_set_cfm(struct ofproto *ofproto, uint16_t ofp_port, |
a5610457 | 724 | const struct cfm_settings *s) |
e7934396 BP |
725 | { |
726 | struct ofport *ofport; | |
abe529af | 727 | int error; |
e7934396 | 728 | |
abe529af | 729 | ofport = ofproto_get_port(ofproto, ofp_port); |
e7934396 | 730 | if (!ofport) { |
892815f5 BP |
731 | VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16, |
732 | ofproto->name, ofp_port); | |
e7934396 BP |
733 | return; |
734 | } | |
735 | ||
93b8df38 EJ |
736 | /* XXX: For configuration simplicity, we only support one remote_mpid |
737 | * outside of the CFM module. It's not clear if this is the correct long | |
738 | * term solution or not. */ | |
abe529af | 739 | error = (ofproto->ofproto_class->set_cfm |
a5610457 | 740 | ? ofproto->ofproto_class->set_cfm(ofport, s) |
abe529af BP |
741 | : EOPNOTSUPP); |
742 | if (error) { | |
743 | VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed (%s)", | |
744 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
745 | strerror(error)); | |
e7934396 | 746 | } |
e7934396 | 747 | } |
e7934396 | 748 | |
fa066f01 BP |
749 | /* Checks the status of LACP negotiation for 'ofp_port' within ofproto. |
750 | * Returns 1 if LACP partner information for 'ofp_port' is up-to-date, | |
751 | * 0 if LACP partner information is not current (generally indicating a | |
752 | * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */ | |
753 | int | |
754 | ofproto_port_is_lacp_current(struct ofproto *ofproto, uint16_t ofp_port) | |
755 | { | |
abe529af BP |
756 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
757 | return (ofport && ofproto->ofproto_class->port_is_lacp_current | |
758 | ? ofproto->ofproto_class->port_is_lacp_current(ofport) | |
fa066f01 | 759 | : -1); |
e7934396 | 760 | } |
e7934396 | 761 | \f |
fa066f01 | 762 | /* Bundles. */ |
e7934396 | 763 | |
abe529af BP |
764 | /* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'. |
765 | * A bundle is the same concept as a Port in OVSDB, that is, it consists of one | |
766 | * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN | |
767 | * configuration plus, if there is more than one slave, a bonding | |
768 | * configuration. | |
769 | * | |
770 | * If 'aux' is already registered then this function updates its configuration | |
771 | * to 's'. Otherwise, this function registers a new bundle. | |
772 | * | |
773 | * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL | |
774 | * port. */ | |
775 | int | |
776 | ofproto_bundle_register(struct ofproto *ofproto, void *aux, | |
777 | const struct ofproto_bundle_settings *s) | |
fa066f01 | 778 | { |
abe529af BP |
779 | return (ofproto->ofproto_class->bundle_set |
780 | ? ofproto->ofproto_class->bundle_set(ofproto, aux, s) | |
781 | : EOPNOTSUPP); | |
fa066f01 BP |
782 | } |
783 | ||
abe529af BP |
784 | /* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'. |
785 | * If no such bundle has been registered, this has no effect. */ | |
786 | int | |
787 | ofproto_bundle_unregister(struct ofproto *ofproto, void *aux) | |
e7934396 | 788 | { |
abe529af | 789 | return ofproto_bundle_register(ofproto, aux, NULL); |
e7934396 | 790 | } |
fa066f01 | 791 | |
e7934396 | 792 | \f |
abe529af BP |
793 | /* Registers a mirror associated with client data pointer 'aux' in 'ofproto'. |
794 | * If 'aux' is already registered then this function updates its configuration | |
c06bba01 | 795 | * to 's'. Otherwise, this function registers a new mirror. */ |
abe529af BP |
796 | int |
797 | ofproto_mirror_register(struct ofproto *ofproto, void *aux, | |
798 | const struct ofproto_mirror_settings *s) | |
064af421 | 799 | { |
abe529af BP |
800 | return (ofproto->ofproto_class->mirror_set |
801 | ? ofproto->ofproto_class->mirror_set(ofproto, aux, s) | |
802 | : EOPNOTSUPP); | |
064af421 BP |
803 | } |
804 | ||
abe529af BP |
805 | /* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'. |
806 | * If no mirror has been registered, this has no effect. */ | |
807 | int | |
808 | ofproto_mirror_unregister(struct ofproto *ofproto, void *aux) | |
064af421 | 809 | { |
abe529af | 810 | return ofproto_mirror_register(ofproto, aux, NULL); |
064af421 BP |
811 | } |
812 | ||
9d24de3b JP |
813 | /* Retrieves statistics from mirror associated with client data pointer |
814 | * 'aux' in 'ofproto'. Stores packet and byte counts in 'packets' and | |
815 | * 'bytes', respectively. If a particular counters is not supported, | |
816 | * the appropriate argument is set to UINT64_MAX. */ | |
817 | int | |
818 | ofproto_mirror_get_stats(struct ofproto *ofproto, void *aux, | |
819 | uint64_t *packets, uint64_t *bytes) | |
820 | { | |
821 | if (!ofproto->ofproto_class->mirror_get_stats) { | |
822 | *packets = *bytes = UINT64_MAX; | |
823 | return EOPNOTSUPP; | |
824 | } | |
825 | ||
826 | return ofproto->ofproto_class->mirror_get_stats(ofproto, aux, | |
827 | packets, bytes); | |
828 | } | |
829 | ||
abe529af BP |
830 | /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on |
831 | * which all packets are flooded, instead of using MAC learning. If | |
832 | * 'flood_vlans' is NULL, then MAC learning applies to all VLANs. | |
833 | * | |
834 | * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL | |
835 | * port. */ | |
836 | int | |
837 | ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans) | |
abdfe474 | 838 | { |
abe529af BP |
839 | return (ofproto->ofproto_class->set_flood_vlans |
840 | ? ofproto->ofproto_class->set_flood_vlans(ofproto, flood_vlans) | |
841 | : EOPNOTSUPP); | |
abdfe474 JP |
842 | } |
843 | ||
abe529af BP |
844 | /* Returns true if 'aux' is a registered bundle that is currently in use as the |
845 | * output for a mirror. */ | |
846 | bool | |
b4affc74 | 847 | ofproto_is_mirror_output_bundle(const struct ofproto *ofproto, void *aux) |
abe529af BP |
848 | { |
849 | return (ofproto->ofproto_class->is_mirror_output_bundle | |
850 | ? ofproto->ofproto_class->is_mirror_output_bundle(ofproto, aux) | |
851 | : false); | |
852 | } | |
853 | \f | |
254750ce BP |
854 | /* Configuration of OpenFlow tables. */ |
855 | ||
856 | /* Returns the number of OpenFlow tables in 'ofproto'. */ | |
857 | int | |
858 | ofproto_get_n_tables(const struct ofproto *ofproto) | |
859 | { | |
860 | return ofproto->n_tables; | |
861 | } | |
862 | ||
863 | /* Configures the OpenFlow table in 'ofproto' with id 'table_id' with the | |
864 | * settings from 's'. 'table_id' must be in the range 0 through the number of | |
865 | * OpenFlow tables in 'ofproto' minus 1, inclusive. | |
866 | * | |
867 | * For read-only tables, only the name may be configured. */ | |
868 | void | |
869 | ofproto_configure_table(struct ofproto *ofproto, int table_id, | |
870 | const struct ofproto_table_settings *s) | |
871 | { | |
872 | struct oftable *table; | |
873 | ||
874 | assert(table_id >= 0 && table_id < ofproto->n_tables); | |
875 | table = &ofproto->tables[table_id]; | |
876 | ||
877 | oftable_set_name(table, s->name); | |
878 | ||
879 | if (table->flags & OFTABLE_READONLY) { | |
880 | return; | |
881 | } | |
882 | ||
883 | if (s->groups) { | |
884 | oftable_enable_eviction(table, s->groups, s->n_groups); | |
885 | } else { | |
886 | oftable_disable_eviction(table); | |
887 | } | |
888 | ||
889 | table->max_flows = s->max_flows; | |
890 | if (classifier_count(&table->cls) > table->max_flows | |
891 | && table->eviction_fields) { | |
892 | /* 'table' contains more flows than allowed. We might not be able to | |
893 | * evict them right away because of the asynchronous nature of flow | |
894 | * table changes. Schedule eviction for later. */ | |
895 | switch (ofproto->state) { | |
896 | case S_OPENFLOW: | |
897 | ofproto->state = S_EVICT; | |
898 | break; | |
899 | case S_EVICT: | |
900 | case S_FLUSH: | |
901 | /* We're already deleting flows, nothing more to do. */ | |
902 | break; | |
903 | } | |
904 | } | |
905 | } | |
906 | \f | |
81e2083f BP |
907 | bool |
908 | ofproto_has_snoops(const struct ofproto *ofproto) | |
909 | { | |
910 | return connmgr_has_snoops(ofproto->connmgr); | |
911 | } | |
912 | ||
064af421 | 913 | void |
81e2083f | 914 | ofproto_get_snoops(const struct ofproto *ofproto, struct sset *snoops) |
064af421 | 915 | { |
19a87e36 | 916 | connmgr_get_snoops(ofproto->connmgr, snoops); |
064af421 BP |
917 | } |
918 | ||
7ee20df1 BP |
919 | static void |
920 | ofproto_flush__(struct ofproto *ofproto) | |
921 | { | |
7ee20df1 | 922 | struct ofopgroup *group; |
d0918789 | 923 | struct oftable *table; |
7ee20df1 BP |
924 | |
925 | if (ofproto->ofproto_class->flush) { | |
926 | ofproto->ofproto_class->flush(ofproto); | |
927 | } | |
928 | ||
7024dffe | 929 | group = ofopgroup_create_unattached(ofproto); |
b772ded8 | 930 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
7ee20df1 BP |
931 | struct rule *rule, *next_rule; |
932 | struct cls_cursor cursor; | |
933 | ||
5c67e4af BP |
934 | if (table->flags & OFTABLE_HIDDEN) { |
935 | continue; | |
936 | } | |
937 | ||
d0918789 | 938 | cls_cursor_init(&cursor, &table->cls, NULL); |
7ee20df1 BP |
939 | CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) { |
940 | if (!rule->pending) { | |
941 | ofoperation_create(group, rule, OFOPERATION_DELETE); | |
d0918789 | 942 | oftable_remove_rule(rule); |
7ee20df1 BP |
943 | ofproto->ofproto_class->rule_destruct(rule); |
944 | } | |
945 | } | |
946 | } | |
947 | ofopgroup_submit(group); | |
948 | } | |
949 | ||
abe529af BP |
950 | static void |
951 | ofproto_destroy__(struct ofproto *ofproto) | |
952 | { | |
d0918789 | 953 | struct oftable *table; |
6c1491fb | 954 | |
7ee20df1 | 955 | assert(list_is_empty(&ofproto->pending)); |
dd5616b3 | 956 | assert(!ofproto->n_pending); |
7ee20df1 | 957 | |
abe529af | 958 | connmgr_destroy(ofproto->connmgr); |
fa066f01 | 959 | |
abe529af BP |
960 | hmap_remove(&all_ofprotos, &ofproto->hmap_node); |
961 | free(ofproto->name); | |
955a7127 | 962 | free(ofproto->type); |
abe529af BP |
963 | free(ofproto->mfr_desc); |
964 | free(ofproto->hw_desc); | |
965 | free(ofproto->sw_desc); | |
966 | free(ofproto->serial_desc); | |
967 | free(ofproto->dp_desc); | |
abe529af BP |
968 | hmap_destroy(&ofproto->ports); |
969 | shash_destroy(&ofproto->port_by_name); | |
6c1491fb | 970 | |
b772ded8 | 971 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
d0918789 | 972 | oftable_destroy(table); |
6c1491fb BP |
973 | } |
974 | free(ofproto->tables); | |
fa066f01 | 975 | |
7ee20df1 BP |
976 | hmap_destroy(&ofproto->deletions); |
977 | ||
52a90c29 BP |
978 | free(ofproto->vlan_bitmap); |
979 | ||
abe529af BP |
980 | ofproto->ofproto_class->dealloc(ofproto); |
981 | } | |
fa066f01 | 982 | |
064af421 BP |
983 | void |
984 | ofproto_destroy(struct ofproto *p) | |
985 | { | |
ca0f572c | 986 | struct ofport *ofport, *next_ofport; |
064af421 BP |
987 | |
988 | if (!p) { | |
989 | return; | |
990 | } | |
991 | ||
7ee20df1 | 992 | ofproto_flush__(p); |
4e8e4213 | 993 | HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) { |
abe529af | 994 | ofport_destroy(ofport); |
064af421 | 995 | } |
064af421 | 996 | |
abe529af BP |
997 | p->ofproto_class->destruct(p); |
998 | ofproto_destroy__(p); | |
064af421 BP |
999 | } |
1000 | ||
abe529af BP |
1001 | /* Destroys the datapath with the respective 'name' and 'type'. With the Linux |
1002 | * kernel datapath, for example, this destroys the datapath in the kernel, and | |
1003 | * with the netdev-based datapath, it tears down the data structures that | |
1004 | * represent the datapath. | |
1005 | * | |
1006 | * The datapath should not be currently open as an ofproto. */ | |
064af421 | 1007 | int |
abe529af | 1008 | ofproto_delete(const char *name, const char *type) |
064af421 | 1009 | { |
abe529af BP |
1010 | const struct ofproto_class *class = ofproto_class_find__(type); |
1011 | return (!class ? EAFNOSUPPORT | |
1012 | : !class->del ? EACCES | |
1013 | : class->del(type, name)); | |
064af421 BP |
1014 | } |
1015 | ||
e9e28be3 BP |
1016 | static void |
1017 | process_port_change(struct ofproto *ofproto, int error, char *devname) | |
1018 | { | |
1019 | if (error == ENOBUFS) { | |
1020 | reinit_ports(ofproto); | |
1021 | } else if (!error) { | |
1022 | update_port(ofproto, devname); | |
1023 | free(devname); | |
1024 | } | |
1025 | } | |
1026 | ||
064af421 | 1027 | int |
abe529af | 1028 | ofproto_run(struct ofproto *p) |
064af421 | 1029 | { |
7436ed80 BP |
1030 | struct sset changed_netdevs; |
1031 | const char *changed_netdev; | |
031d8bff | 1032 | struct ofport *ofport; |
064af421 | 1033 | int error; |
064af421 | 1034 | |
abe529af | 1035 | error = p->ofproto_class->run(p); |
5fcc0d00 BP |
1036 | if (error && error != EAGAIN) { |
1037 | VLOG_ERR_RL(&rl, "%s: run failed (%s)", p->name, strerror(error)); | |
149f577a JG |
1038 | } |
1039 | ||
5bf0e941 | 1040 | if (p->ofproto_class->port_poll) { |
7436ed80 BP |
1041 | char *devname; |
1042 | ||
5bf0e941 BP |
1043 | while ((error = p->ofproto_class->port_poll(p, &devname)) != EAGAIN) { |
1044 | process_port_change(p, error, devname); | |
064af421 | 1045 | } |
e9e28be3 | 1046 | } |
031d8bff | 1047 | |
7436ed80 BP |
1048 | /* Update OpenFlow port status for any port whose netdev has changed. |
1049 | * | |
1050 | * Refreshing a given 'ofport' can cause an arbitrary ofport to be | |
1051 | * destroyed, so it's not safe to update ports directly from the | |
1052 | * HMAP_FOR_EACH loop, or even to use HMAP_FOR_EACH_SAFE. Instead, we | |
1053 | * need this two-phase approach. */ | |
1054 | sset_init(&changed_netdevs); | |
031d8bff EJ |
1055 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { |
1056 | unsigned int change_seq = netdev_change_seq(ofport->netdev); | |
1057 | if (ofport->change_seq != change_seq) { | |
1058 | ofport->change_seq = change_seq; | |
7436ed80 | 1059 | sset_add(&changed_netdevs, netdev_get_name(ofport->netdev)); |
031d8bff | 1060 | } |
064af421 | 1061 | } |
7436ed80 BP |
1062 | SSET_FOR_EACH (changed_netdev, &changed_netdevs) { |
1063 | update_port(p, changed_netdev); | |
1064 | } | |
1065 | sset_destroy(&changed_netdevs); | |
064af421 | 1066 | |
7ee20df1 BP |
1067 | switch (p->state) { |
1068 | case S_OPENFLOW: | |
1069 | connmgr_run(p->connmgr, handle_openflow); | |
1070 | break; | |
1071 | ||
254750ce BP |
1072 | case S_EVICT: |
1073 | connmgr_run(p->connmgr, NULL); | |
1074 | ofproto_evict(p); | |
1075 | if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) { | |
1076 | p->state = S_OPENFLOW; | |
1077 | } | |
1078 | break; | |
1079 | ||
7ee20df1 BP |
1080 | case S_FLUSH: |
1081 | connmgr_run(p->connmgr, NULL); | |
1082 | ofproto_flush__(p); | |
1083 | if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) { | |
1084 | connmgr_flushed(p->connmgr); | |
1085 | p->state = S_OPENFLOW; | |
1086 | } | |
1087 | break; | |
1088 | ||
1089 | default: | |
1090 | NOT_REACHED(); | |
1091 | } | |
064af421 | 1092 | |
5fcc0d00 BP |
1093 | return error; |
1094 | } | |
1095 | ||
1096 | /* Performs periodic activity required by 'ofproto' that needs to be done | |
1097 | * with the least possible latency. | |
1098 | * | |
1099 | * It makes sense to call this function a couple of times per poll loop, to | |
1100 | * provide a significant performance boost on some benchmarks with the | |
1101 | * ofproto-dpif implementation. */ | |
1102 | int | |
1103 | ofproto_run_fast(struct ofproto *p) | |
1104 | { | |
1105 | int error; | |
1106 | ||
1107 | error = p->ofproto_class->run_fast ? p->ofproto_class->run_fast(p) : 0; | |
1108 | if (error && error != EAGAIN) { | |
1109 | VLOG_ERR_RL(&rl, "%s: fastpath run failed (%s)", | |
1110 | p->name, strerror(error)); | |
1111 | } | |
1112 | return error; | |
064af421 BP |
1113 | } |
1114 | ||
1115 | void | |
1116 | ofproto_wait(struct ofproto *p) | |
1117 | { | |
031d8bff EJ |
1118 | struct ofport *ofport; |
1119 | ||
abe529af | 1120 | p->ofproto_class->wait(p); |
5bf0e941 BP |
1121 | if (p->ofproto_class->port_poll_wait) { |
1122 | p->ofproto_class->port_poll_wait(p); | |
e7934396 | 1123 | } |
031d8bff EJ |
1124 | |
1125 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
1126 | if (ofport->change_seq != netdev_change_seq(ofport->netdev)) { | |
1127 | poll_immediate_wake(); | |
1128 | } | |
1129 | } | |
7ee20df1 BP |
1130 | |
1131 | switch (p->state) { | |
1132 | case S_OPENFLOW: | |
1133 | connmgr_wait(p->connmgr, true); | |
1134 | break; | |
1135 | ||
254750ce | 1136 | case S_EVICT: |
7ee20df1 BP |
1137 | case S_FLUSH: |
1138 | connmgr_wait(p->connmgr, false); | |
1139 | if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) { | |
1140 | poll_immediate_wake(); | |
1141 | } | |
1142 | break; | |
1143 | } | |
064af421 BP |
1144 | } |
1145 | ||
064af421 BP |
1146 | bool |
1147 | ofproto_is_alive(const struct ofproto *p) | |
1148 | { | |
19a87e36 | 1149 | return connmgr_has_controllers(p->connmgr); |
064af421 BP |
1150 | } |
1151 | ||
bffc0589 | 1152 | void |
2cdcb898 | 1153 | ofproto_get_ofproto_controller_info(const struct ofproto *ofproto, |
bffc0589 AE |
1154 | struct shash *info) |
1155 | { | |
19a87e36 | 1156 | connmgr_get_controller_info(ofproto->connmgr, info); |
bffc0589 AE |
1157 | } |
1158 | ||
1159 | void | |
1160 | ofproto_free_ofproto_controller_info(struct shash *info) | |
1161 | { | |
72ba2ed3 | 1162 | connmgr_free_controller_info(info); |
bffc0589 AE |
1163 | } |
1164 | ||
b5827b24 BP |
1165 | /* Makes a deep copy of 'old' into 'port'. */ |
1166 | void | |
1167 | ofproto_port_clone(struct ofproto_port *port, const struct ofproto_port *old) | |
1168 | { | |
1169 | port->name = xstrdup(old->name); | |
1170 | port->type = xstrdup(old->type); | |
1171 | port->ofp_port = old->ofp_port; | |
1172 | } | |
1173 | ||
1174 | /* Frees memory allocated to members of 'ofproto_port'. | |
3a6ccc8c | 1175 | * |
b5827b24 BP |
1176 | * Do not call this function on an ofproto_port obtained from |
1177 | * ofproto_port_dump_next(): that function retains ownership of the data in the | |
1178 | * ofproto_port. */ | |
1179 | void | |
1180 | ofproto_port_destroy(struct ofproto_port *ofproto_port) | |
1181 | { | |
1182 | free(ofproto_port->name); | |
1183 | free(ofproto_port->type); | |
1184 | } | |
1185 | ||
b5827b24 | 1186 | /* Initializes 'dump' to begin dumping the ports in an ofproto. |
3a6ccc8c | 1187 | * |
b5827b24 BP |
1188 | * This function provides no status indication. An error status for the entire |
1189 | * dump operation is provided when it is completed by calling | |
1190 | * ofproto_port_dump_done(). | |
1191 | */ | |
1192 | void | |
1193 | ofproto_port_dump_start(struct ofproto_port_dump *dump, | |
1194 | const struct ofproto *ofproto) | |
1195 | { | |
abe529af BP |
1196 | dump->ofproto = ofproto; |
1197 | dump->error = ofproto->ofproto_class->port_dump_start(ofproto, | |
1198 | &dump->state); | |
b5827b24 BP |
1199 | } |
1200 | ||
1201 | /* Attempts to retrieve another port from 'dump', which must have been created | |
1202 | * with ofproto_port_dump_start(). On success, stores a new ofproto_port into | |
1203 | * 'port' and returns true. On failure, returns false. | |
1204 | * | |
1205 | * Failure might indicate an actual error or merely that the last port has been | |
1206 | * dumped. An error status for the entire dump operation is provided when it | |
1207 | * is completed by calling ofproto_port_dump_done(). | |
1208 | * | |
1209 | * The ofproto owns the data stored in 'port'. It will remain valid until at | |
1210 | * least the next time 'dump' is passed to ofproto_port_dump_next() or | |
1211 | * ofproto_port_dump_done(). */ | |
1212 | bool | |
1213 | ofproto_port_dump_next(struct ofproto_port_dump *dump, | |
1214 | struct ofproto_port *port) | |
1215 | { | |
abe529af BP |
1216 | const struct ofproto *ofproto = dump->ofproto; |
1217 | ||
1218 | if (dump->error) { | |
1219 | return false; | |
1220 | } | |
b5827b24 | 1221 | |
abe529af BP |
1222 | dump->error = ofproto->ofproto_class->port_dump_next(ofproto, dump->state, |
1223 | port); | |
1224 | if (dump->error) { | |
1225 | ofproto->ofproto_class->port_dump_done(ofproto, dump->state); | |
1226 | return false; | |
b5827b24 | 1227 | } |
abe529af | 1228 | return true; |
b5827b24 BP |
1229 | } |
1230 | ||
1231 | /* Completes port table dump operation 'dump', which must have been created | |
1232 | * with ofproto_port_dump_start(). Returns 0 if the dump operation was | |
1233 | * error-free, otherwise a positive errno value describing the problem. */ | |
3a6ccc8c | 1234 | int |
b5827b24 | 1235 | ofproto_port_dump_done(struct ofproto_port_dump *dump) |
3a6ccc8c | 1236 | { |
abe529af BP |
1237 | const struct ofproto *ofproto = dump->ofproto; |
1238 | if (!dump->error) { | |
1239 | dump->error = ofproto->ofproto_class->port_dump_done(ofproto, | |
1240 | dump->state); | |
1241 | } | |
1242 | return dump->error == EOF ? 0 : dump->error; | |
b5827b24 BP |
1243 | } |
1244 | ||
1245 | /* Attempts to add 'netdev' as a port on 'ofproto'. If successful, returns 0 | |
892815f5 | 1246 | * and sets '*ofp_portp' to the new port's OpenFlow port number (if 'ofp_portp' |
b5827b24 BP |
1247 | * is non-null). On failure, returns a positive errno value and sets |
1248 | * '*ofp_portp' to OFPP_NONE (if 'ofp_portp' is non-null). */ | |
1249 | int | |
1250 | ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev, | |
1251 | uint16_t *ofp_portp) | |
1252 | { | |
abe529af | 1253 | uint16_t ofp_port; |
3a6ccc8c BP |
1254 | int error; |
1255 | ||
abe529af | 1256 | error = ofproto->ofproto_class->port_add(ofproto, netdev, &ofp_port); |
1fa24dea BP |
1257 | if (!error) { |
1258 | update_port(ofproto, netdev_get_name(netdev)); | |
1259 | } | |
b5827b24 | 1260 | if (ofp_portp) { |
abe529af | 1261 | *ofp_portp = error ? OFPP_NONE : ofp_port; |
3a6ccc8c BP |
1262 | } |
1263 | return error; | |
1264 | } | |
1265 | ||
b5827b24 BP |
1266 | /* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and |
1267 | * initializes '*port' appropriately; on failure, returns a positive errno | |
1268 | * value. | |
1269 | * | |
abe529af | 1270 | * The caller owns the data in 'ofproto_port' and must free it with |
b5827b24 BP |
1271 | * ofproto_port_destroy() when it is no longer needed. */ |
1272 | int | |
1273 | ofproto_port_query_by_name(const struct ofproto *ofproto, const char *devname, | |
1274 | struct ofproto_port *port) | |
a4e2e1f2 | 1275 | { |
b5827b24 BP |
1276 | int error; |
1277 | ||
abe529af BP |
1278 | error = ofproto->ofproto_class->port_query_by_name(ofproto, devname, port); |
1279 | if (error) { | |
1280 | memset(port, 0, sizeof *port); | |
b5827b24 BP |
1281 | } |
1282 | return error; | |
a4e2e1f2 EJ |
1283 | } |
1284 | ||
b5827b24 | 1285 | /* Deletes port number 'ofp_port' from the datapath for 'ofproto'. |
3a6ccc8c | 1286 | * Returns 0 if successful, otherwise a positive errno. */ |
064af421 | 1287 | int |
b5827b24 | 1288 | ofproto_port_del(struct ofproto *ofproto, uint16_t ofp_port) |
064af421 | 1289 | { |
abe529af | 1290 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1264ec95 | 1291 | const char *name = ofport ? netdev_get_name(ofport->netdev) : "<unknown>"; |
3cf10406 | 1292 | int error; |
cdee00fd | 1293 | |
abe529af | 1294 | error = ofproto->ofproto_class->port_del(ofproto, ofp_port); |
892815f5 | 1295 | if (!error && ofport) { |
1264ec95 BP |
1296 | /* 'name' is the netdev's name and update_port() is going to close the |
1297 | * netdev. Just in case update_port() refers to 'name' after it | |
3a6ccc8c BP |
1298 | * destroys 'ofport', make a copy of it around the update_port() |
1299 | * call. */ | |
1300 | char *devname = xstrdup(name); | |
1301 | update_port(ofproto, devname); | |
1302 | free(devname); | |
3cf10406 BP |
1303 | } |
1304 | return error; | |
064af421 BP |
1305 | } |
1306 | ||
6c1491fb | 1307 | /* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and |
fa8b054f BP |
1308 | * performs the 'n_actions' actions in 'actions'. The new flow will not |
1309 | * timeout. | |
1310 | * | |
1311 | * If cls_rule->priority is in the range of priorities supported by OpenFlow | |
1312 | * (0...65535, inclusive) then the flow will be visible to OpenFlow | |
1313 | * controllers; otherwise, it will be hidden. | |
1314 | * | |
6c1491fb BP |
1315 | * The caller retains ownership of 'cls_rule' and 'actions'. |
1316 | * | |
1317 | * This is a helper function for in-band control and fail-open. */ | |
064af421 | 1318 | void |
7ee20df1 | 1319 | ofproto_add_flow(struct ofproto *ofproto, const struct cls_rule *cls_rule, |
fa8b054f | 1320 | const union ofp_action *actions, size_t n_actions) |
064af421 | 1321 | { |
7ee20df1 BP |
1322 | const struct rule *rule; |
1323 | ||
1324 | rule = rule_from_cls_rule(classifier_find_rule_exactly( | |
d0918789 | 1325 | &ofproto->tables[0].cls, cls_rule)); |
7ee20df1 BP |
1326 | if (!rule || !ofputil_actions_equal(rule->actions, rule->n_actions, |
1327 | actions, n_actions)) { | |
a9a2da38 | 1328 | struct ofputil_flow_mod fm; |
7ee20df1 BP |
1329 | |
1330 | memset(&fm, 0, sizeof fm); | |
1331 | fm.cr = *cls_rule; | |
1332 | fm.buffer_id = UINT32_MAX; | |
1333 | fm.actions = (union ofp_action *) actions; | |
1334 | fm.n_actions = n_actions; | |
1335 | add_flow(ofproto, NULL, &fm, NULL); | |
1336 | } | |
064af421 BP |
1337 | } |
1338 | ||
75a75043 | 1339 | /* Executes the flow modification specified in 'fm'. Returns 0 on success, an |
90bf1e07 BP |
1340 | * OFPERR_* OpenFlow error code on failure, or OFPROTO_POSTPONE if the |
1341 | * operation cannot be initiated now but may be retried later. | |
75a75043 BP |
1342 | * |
1343 | * This is a helper function for in-band control and fail-open. */ | |
1344 | int | |
1345 | ofproto_flow_mod(struct ofproto *ofproto, const struct ofputil_flow_mod *fm) | |
1346 | { | |
1347 | return handle_flow_mod__(ofproto, NULL, fm, NULL); | |
1348 | } | |
1349 | ||
6c1491fb BP |
1350 | /* Searches for a rule with matching criteria exactly equal to 'target' in |
1351 | * ofproto's table 0 and, if it finds one, deletes it. | |
1352 | * | |
1353 | * This is a helper function for in-band control and fail-open. */ | |
7ee20df1 | 1354 | bool |
cf3fad8a | 1355 | ofproto_delete_flow(struct ofproto *ofproto, const struct cls_rule *target) |
064af421 BP |
1356 | { |
1357 | struct rule *rule; | |
1358 | ||
6c1491fb | 1359 | rule = rule_from_cls_rule(classifier_find_rule_exactly( |
d0918789 | 1360 | &ofproto->tables[0].cls, target)); |
7ee20df1 BP |
1361 | if (!rule) { |
1362 | /* No such rule -> success. */ | |
1363 | return true; | |
1364 | } else if (rule->pending) { | |
1365 | /* An operation on the rule is already pending -> failure. | |
1366 | * Caller must retry later if it's important. */ | |
1367 | return false; | |
1368 | } else { | |
1369 | /* Initiate deletion -> success. */ | |
7024dffe | 1370 | struct ofopgroup *group = ofopgroup_create_unattached(ofproto); |
7ee20df1 | 1371 | ofoperation_create(group, rule, OFOPERATION_DELETE); |
d0918789 | 1372 | oftable_remove_rule(rule); |
254750ce | 1373 | ofproto->ofproto_class->rule_destruct(rule); |
7ee20df1 BP |
1374 | ofopgroup_submit(group); |
1375 | return true; | |
bcf84111 | 1376 | } |
5ecc9d81 | 1377 | |
142e1f5c BP |
1378 | } |
1379 | ||
7ee20df1 BP |
1380 | /* Starts the process of deleting all of the flows from all of ofproto's flow |
1381 | * tables and then reintroducing the flows required by in-band control and | |
1382 | * fail-open. The process will complete in a later call to ofproto_run(). */ | |
142e1f5c BP |
1383 | void |
1384 | ofproto_flush_flows(struct ofproto *ofproto) | |
1385 | { | |
7ee20df1 BP |
1386 | COVERAGE_INC(ofproto_flush); |
1387 | ofproto->state = S_FLUSH; | |
064af421 BP |
1388 | } |
1389 | \f | |
1390 | static void | |
1391 | reinit_ports(struct ofproto *p) | |
1392 | { | |
abe529af | 1393 | struct ofproto_port_dump dump; |
b3c01ed3 | 1394 | struct sset devnames; |
064af421 | 1395 | struct ofport *ofport; |
abe529af | 1396 | struct ofproto_port ofproto_port; |
b3c01ed3 | 1397 | const char *devname; |
064af421 | 1398 | |
898bf89d JP |
1399 | COVERAGE_INC(ofproto_reinit_ports); |
1400 | ||
b3c01ed3 | 1401 | sset_init(&devnames); |
4e8e4213 | 1402 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { |
1264ec95 | 1403 | sset_add(&devnames, netdev_get_name(ofport->netdev)); |
064af421 | 1404 | } |
abe529af BP |
1405 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { |
1406 | sset_add(&devnames, ofproto_port.name); | |
064af421 | 1407 | } |
064af421 | 1408 | |
b3c01ed3 BP |
1409 | SSET_FOR_EACH (devname, &devnames) { |
1410 | update_port(p, devname); | |
064af421 | 1411 | } |
b3c01ed3 | 1412 | sset_destroy(&devnames); |
064af421 BP |
1413 | } |
1414 | ||
abe529af BP |
1415 | /* Opens and returns a netdev for 'ofproto_port', or a null pointer if the |
1416 | * netdev cannot be opened. On success, also fills in 'opp'. */ | |
b33951b8 | 1417 | static struct netdev * |
9e1fd49b BP |
1418 | ofport_open(const struct ofproto_port *ofproto_port, |
1419 | struct ofputil_phy_port *pp) | |
064af421 BP |
1420 | { |
1421 | enum netdev_flags flags; | |
064af421 | 1422 | struct netdev *netdev; |
064af421 BP |
1423 | int error; |
1424 | ||
18812dff | 1425 | error = netdev_open(ofproto_port->name, ofproto_port->type, &netdev); |
064af421 BP |
1426 | if (error) { |
1427 | VLOG_WARN_RL(&rl, "ignoring port %s (%"PRIu16") because netdev %s " | |
1428 | "cannot be opened (%s)", | |
abe529af BP |
1429 | ofproto_port->name, ofproto_port->ofp_port, |
1430 | ofproto_port->name, strerror(error)); | |
064af421 BP |
1431 | return NULL; |
1432 | } | |
1433 | ||
9e1fd49b BP |
1434 | pp->port_no = ofproto_port->ofp_port; |
1435 | netdev_get_etheraddr(netdev, pp->hw_addr); | |
1436 | ovs_strlcpy(pp->name, ofproto_port->name, sizeof pp->name); | |
064af421 | 1437 | netdev_get_flags(netdev, &flags); |
9e1fd49b BP |
1438 | pp->config = flags & NETDEV_UP ? 0 : OFPUTIL_PC_PORT_DOWN; |
1439 | pp->state = netdev_get_carrier(netdev) ? 0 : OFPUTIL_PS_LINK_DOWN; | |
1440 | netdev_get_features(netdev, &pp->curr, &pp->advertised, | |
1441 | &pp->supported, &pp->peer); | |
1442 | pp->curr_speed = netdev_features_to_bps(pp->curr); | |
1443 | pp->max_speed = netdev_features_to_bps(pp->supported); | |
118c4676 | 1444 | |
b33951b8 | 1445 | return netdev; |
064af421 BP |
1446 | } |
1447 | ||
b33951b8 | 1448 | /* Returns true if most fields of 'a' and 'b' are equal. Differences in name, |
9e1fd49b | 1449 | * port number, and 'config' bits other than OFPUTIL_PS_LINK_DOWN are |
b33951b8 BP |
1450 | * disregarded. */ |
1451 | static bool | |
9e1fd49b BP |
1452 | ofport_equal(const struct ofputil_phy_port *a, |
1453 | const struct ofputil_phy_port *b) | |
064af421 | 1454 | { |
9e1fd49b | 1455 | return (eth_addr_equals(a->hw_addr, b->hw_addr) |
064af421 | 1456 | && a->state == b->state |
9e1fd49b | 1457 | && !((a->config ^ b->config) & OFPUTIL_PC_PORT_DOWN) |
064af421 BP |
1458 | && a->curr == b->curr |
1459 | && a->advertised == b->advertised | |
1460 | && a->supported == b->supported | |
9e1fd49b BP |
1461 | && a->peer == b->peer |
1462 | && a->curr_speed == b->curr_speed | |
1463 | && a->max_speed == b->max_speed); | |
064af421 BP |
1464 | } |
1465 | ||
b33951b8 BP |
1466 | /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'. |
1467 | * The caller must ensure that 'p' does not have a conflicting ofport (that is, | |
1468 | * one with the same name or port number). */ | |
064af421 | 1469 | static void |
b33951b8 | 1470 | ofport_install(struct ofproto *p, |
9e1fd49b | 1471 | struct netdev *netdev, const struct ofputil_phy_port *pp) |
064af421 | 1472 | { |
b33951b8 BP |
1473 | const char *netdev_name = netdev_get_name(netdev); |
1474 | struct ofport *ofport; | |
abe529af | 1475 | int error; |
72b06300 | 1476 | |
b33951b8 | 1477 | /* Create ofport. */ |
abe529af BP |
1478 | ofport = p->ofproto_class->port_alloc(); |
1479 | if (!ofport) { | |
1480 | error = ENOMEM; | |
1481 | goto error; | |
1482 | } | |
0f7d71a5 | 1483 | ofport->ofproto = p; |
b33951b8 | 1484 | ofport->netdev = netdev; |
031d8bff | 1485 | ofport->change_seq = netdev_change_seq(netdev); |
9e1fd49b BP |
1486 | ofport->pp = *pp; |
1487 | ofport->ofp_port = pp->port_no; | |
b33951b8 BP |
1488 | |
1489 | /* Add port to 'p'. */ | |
abe529af | 1490 | hmap_insert(&p->ports, &ofport->hmap_node, hash_int(ofport->ofp_port, 0)); |
72b06300 | 1491 | shash_add(&p->port_by_name, netdev_name, ofport); |
abe529af | 1492 | |
ada3428f | 1493 | update_mtu(p, ofport); |
9197df76 | 1494 | |
abe529af BP |
1495 | /* Let the ofproto_class initialize its private data. */ |
1496 | error = p->ofproto_class->port_construct(ofport); | |
1497 | if (error) { | |
1498 | goto error; | |
1499 | } | |
9e1fd49b | 1500 | connmgr_send_port_status(p->connmgr, pp, OFPPR_ADD); |
abe529af BP |
1501 | return; |
1502 | ||
1503 | error: | |
1504 | VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)", | |
1505 | p->name, netdev_name, strerror(error)); | |
1506 | if (ofport) { | |
1507 | ofport_destroy__(ofport); | |
1508 | } else { | |
1509 | netdev_close(netdev); | |
72b06300 | 1510 | } |
064af421 BP |
1511 | } |
1512 | ||
b33951b8 | 1513 | /* Removes 'ofport' from 'p' and destroys it. */ |
064af421 | 1514 | static void |
0f7d71a5 | 1515 | ofport_remove(struct ofport *ofport) |
064af421 | 1516 | { |
9e1fd49b | 1517 | connmgr_send_port_status(ofport->ofproto->connmgr, &ofport->pp, |
fa066f01 | 1518 | OFPPR_DELETE); |
abe529af | 1519 | ofport_destroy(ofport); |
b33951b8 BP |
1520 | } |
1521 | ||
1522 | /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and | |
1523 | * destroys it. */ | |
1524 | static void | |
1525 | ofport_remove_with_name(struct ofproto *ofproto, const char *name) | |
1526 | { | |
1527 | struct ofport *port = shash_find_data(&ofproto->port_by_name, name); | |
1528 | if (port) { | |
0f7d71a5 | 1529 | ofport_remove(port); |
b33951b8 BP |
1530 | } |
1531 | } | |
1532 | ||
9e1fd49b | 1533 | /* Updates 'port' with new 'pp' description. |
b33951b8 BP |
1534 | * |
1535 | * Does not handle a name or port number change. The caller must implement | |
1536 | * such a change as a delete followed by an add. */ | |
1537 | static void | |
9e1fd49b | 1538 | ofport_modified(struct ofport *port, struct ofputil_phy_port *pp) |
b33951b8 | 1539 | { |
9e1fd49b BP |
1540 | memcpy(port->pp.hw_addr, pp->hw_addr, ETH_ADDR_LEN); |
1541 | port->pp.config = ((port->pp.config & ~OFPUTIL_PC_PORT_DOWN) | |
1542 | | (pp->config & OFPUTIL_PC_PORT_DOWN)); | |
1543 | port->pp.state = pp->state; | |
1544 | port->pp.curr = pp->curr; | |
1545 | port->pp.advertised = pp->advertised; | |
1546 | port->pp.supported = pp->supported; | |
1547 | port->pp.peer = pp->peer; | |
1548 | port->pp.curr_speed = pp->curr_speed; | |
1549 | port->pp.max_speed = pp->max_speed; | |
b33951b8 | 1550 | |
9e1fd49b | 1551 | connmgr_send_port_status(port->ofproto->connmgr, &port->pp, OFPPR_MODIFY); |
064af421 BP |
1552 | } |
1553 | ||
5a2dfd47 JP |
1554 | /* Update OpenFlow 'state' in 'port' and notify controller. */ |
1555 | void | |
9e1fd49b | 1556 | ofproto_port_set_state(struct ofport *port, enum ofputil_port_state state) |
5a2dfd47 | 1557 | { |
9e1fd49b BP |
1558 | if (port->pp.state != state) { |
1559 | port->pp.state = state; | |
1560 | connmgr_send_port_status(port->ofproto->connmgr, &port->pp, | |
5a2dfd47 JP |
1561 | OFPPR_MODIFY); |
1562 | } | |
1563 | } | |
1564 | ||
abe529af BP |
1565 | void |
1566 | ofproto_port_unregister(struct ofproto *ofproto, uint16_t ofp_port) | |
e7934396 | 1567 | { |
abe529af BP |
1568 | struct ofport *port = ofproto_get_port(ofproto, ofp_port); |
1569 | if (port) { | |
52a90c29 BP |
1570 | if (port->ofproto->ofproto_class->set_realdev) { |
1571 | port->ofproto->ofproto_class->set_realdev(port, 0, 0); | |
1572 | } | |
b308140a JP |
1573 | if (port->ofproto->ofproto_class->set_stp_port) { |
1574 | port->ofproto->ofproto_class->set_stp_port(port, NULL); | |
1575 | } | |
abe529af | 1576 | if (port->ofproto->ofproto_class->set_cfm) { |
a5610457 | 1577 | port->ofproto->ofproto_class->set_cfm(port, NULL); |
abe529af BP |
1578 | } |
1579 | if (port->ofproto->ofproto_class->bundle_remove) { | |
1580 | port->ofproto->ofproto_class->bundle_remove(port); | |
e7934396 BP |
1581 | } |
1582 | } | |
1583 | } | |
1584 | ||
1585 | static void | |
abe529af | 1586 | ofport_destroy__(struct ofport *port) |
e7934396 | 1587 | { |
abe529af BP |
1588 | struct ofproto *ofproto = port->ofproto; |
1589 | const char *name = netdev_get_name(port->netdev); | |
fa066f01 | 1590 | |
abe529af BP |
1591 | hmap_remove(&ofproto->ports, &port->hmap_node); |
1592 | shash_delete(&ofproto->port_by_name, | |
1593 | shash_find(&ofproto->port_by_name, name)); | |
fa066f01 | 1594 | |
abe529af BP |
1595 | netdev_close(port->netdev); |
1596 | ofproto->ofproto_class->port_dealloc(port); | |
e7934396 BP |
1597 | } |
1598 | ||
064af421 | 1599 | static void |
abe529af | 1600 | ofport_destroy(struct ofport *port) |
064af421 | 1601 | { |
fa066f01 | 1602 | if (port) { |
abe529af BP |
1603 | port->ofproto->ofproto_class->port_destruct(port); |
1604 | ofport_destroy__(port); | |
1605 | } | |
064af421 BP |
1606 | } |
1607 | ||
abe529af BP |
1608 | struct ofport * |
1609 | ofproto_get_port(const struct ofproto *ofproto, uint16_t ofp_port) | |
ca0f572c BP |
1610 | { |
1611 | struct ofport *port; | |
1612 | ||
4e8e4213 | 1613 | HMAP_FOR_EACH_IN_BUCKET (port, hmap_node, |
abe529af BP |
1614 | hash_int(ofp_port, 0), &ofproto->ports) { |
1615 | if (port->ofp_port == ofp_port) { | |
ca0f572c BP |
1616 | return port; |
1617 | } | |
1618 | } | |
1619 | return NULL; | |
1620 | } | |
1621 | ||
6527c598 PS |
1622 | int |
1623 | ofproto_port_get_stats(const struct ofport *port, struct netdev_stats *stats) | |
1624 | { | |
1625 | struct ofproto *ofproto = port->ofproto; | |
1626 | int error; | |
1627 | ||
1628 | if (ofproto->ofproto_class->port_get_stats) { | |
1629 | error = ofproto->ofproto_class->port_get_stats(port, stats); | |
1630 | } else { | |
1631 | error = EOPNOTSUPP; | |
1632 | } | |
1633 | ||
1634 | return error; | |
1635 | } | |
1636 | ||
064af421 | 1637 | static void |
b33951b8 | 1638 | update_port(struct ofproto *ofproto, const char *name) |
064af421 | 1639 | { |
abe529af | 1640 | struct ofproto_port ofproto_port; |
9e1fd49b | 1641 | struct ofputil_phy_port pp; |
b33951b8 BP |
1642 | struct netdev *netdev; |
1643 | struct ofport *port; | |
064af421 BP |
1644 | |
1645 | COVERAGE_INC(ofproto_update_port); | |
c874dc6d | 1646 | |
b33951b8 | 1647 | /* Fetch 'name''s location and properties from the datapath. */ |
abe529af | 1648 | netdev = (!ofproto_port_query_by_name(ofproto, name, &ofproto_port) |
9e1fd49b | 1649 | ? ofport_open(&ofproto_port, &pp) |
b33951b8 BP |
1650 | : NULL); |
1651 | if (netdev) { | |
abe529af | 1652 | port = ofproto_get_port(ofproto, ofproto_port.ofp_port); |
b33951b8 | 1653 | if (port && !strcmp(netdev_get_name(port->netdev), name)) { |
e65942a0 BP |
1654 | struct netdev *old_netdev = port->netdev; |
1655 | ||
b33951b8 | 1656 | /* 'name' hasn't changed location. Any properties changed? */ |
9e1fd49b BP |
1657 | if (!ofport_equal(&port->pp, &pp)) { |
1658 | ofport_modified(port, &pp); | |
abe529af BP |
1659 | } |
1660 | ||
ada3428f | 1661 | update_mtu(ofproto, port); |
9197df76 | 1662 | |
e65942a0 BP |
1663 | /* Install the newly opened netdev in case it has changed. |
1664 | * Don't close the old netdev yet in case port_modified has to | |
1665 | * remove a retained reference to it.*/ | |
abe529af | 1666 | port->netdev = netdev; |
031d8bff | 1667 | port->change_seq = netdev_change_seq(netdev); |
abe529af BP |
1668 | |
1669 | if (port->ofproto->ofproto_class->port_modified) { | |
1670 | port->ofproto->ofproto_class->port_modified(port); | |
b33951b8 | 1671 | } |
e65942a0 BP |
1672 | |
1673 | netdev_close(old_netdev); | |
b33951b8 BP |
1674 | } else { |
1675 | /* If 'port' is nonnull then its name differs from 'name' and thus | |
1676 | * we should delete it. If we think there's a port named 'name' | |
1677 | * then its port number must be wrong now so delete it too. */ | |
1678 | if (port) { | |
0f7d71a5 | 1679 | ofport_remove(port); |
b33951b8 BP |
1680 | } |
1681 | ofport_remove_with_name(ofproto, name); | |
9e1fd49b | 1682 | ofport_install(ofproto, netdev, &pp); |
c874dc6d | 1683 | } |
b33951b8 BP |
1684 | } else { |
1685 | /* Any port named 'name' is gone now. */ | |
1686 | ofport_remove_with_name(ofproto, name); | |
c874dc6d | 1687 | } |
abe529af | 1688 | ofproto_port_destroy(&ofproto_port); |
064af421 BP |
1689 | } |
1690 | ||
1691 | static int | |
1692 | init_ports(struct ofproto *p) | |
1693 | { | |
abe529af BP |
1694 | struct ofproto_port_dump dump; |
1695 | struct ofproto_port ofproto_port; | |
1696 | ||
1697 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { | |
1698 | uint16_t ofp_port = ofproto_port.ofp_port; | |
1699 | if (ofproto_get_port(p, ofp_port)) { | |
1700 | VLOG_WARN_RL(&rl, "ignoring duplicate port %"PRIu16" in datapath", | |
1701 | ofp_port); | |
1702 | } else if (shash_find(&p->port_by_name, ofproto_port.name)) { | |
1703 | VLOG_WARN_RL(&rl, "ignoring duplicate device %s in datapath", | |
1704 | ofproto_port.name); | |
1705 | } else { | |
9e1fd49b | 1706 | struct ofputil_phy_port pp; |
b33951b8 BP |
1707 | struct netdev *netdev; |
1708 | ||
9e1fd49b | 1709 | netdev = ofport_open(&ofproto_port, &pp); |
b33951b8 | 1710 | if (netdev) { |
9e1fd49b | 1711 | ofport_install(p, netdev, &pp); |
064af421 BP |
1712 | } |
1713 | } | |
1714 | } | |
b0ec0f27 | 1715 | |
064af421 BP |
1716 | return 0; |
1717 | } | |
9197df76 JP |
1718 | |
1719 | /* Find the minimum MTU of all non-datapath devices attached to 'p'. | |
1720 | * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */ | |
1721 | static int | |
1722 | find_min_mtu(struct ofproto *p) | |
1723 | { | |
1724 | struct ofport *ofport; | |
1725 | int mtu = 0; | |
1726 | ||
1727 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
1728 | struct netdev *netdev = ofport->netdev; | |
1729 | int dev_mtu; | |
1730 | ||
1731 | /* Skip any internal ports, since that's what we're trying to | |
1732 | * set. */ | |
1733 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
1734 | continue; | |
1735 | } | |
1736 | ||
1737 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
1738 | continue; | |
1739 | } | |
1740 | if (!mtu || dev_mtu < mtu) { | |
1741 | mtu = dev_mtu; | |
1742 | } | |
1743 | } | |
1744 | ||
1745 | return mtu ? mtu: ETH_PAYLOAD_MAX; | |
1746 | } | |
1747 | ||
ada3428f PS |
1748 | /* Update MTU of all datapath devices on 'p' to the minimum of the |
1749 | * non-datapath ports in event of 'port' added or changed. */ | |
9197df76 | 1750 | static void |
ada3428f | 1751 | update_mtu(struct ofproto *p, struct ofport *port) |
9197df76 JP |
1752 | { |
1753 | struct ofport *ofport; | |
ada3428f PS |
1754 | struct netdev *netdev = port->netdev; |
1755 | int dev_mtu, old_min; | |
1756 | ||
1757 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
1758 | port->mtu = 0; | |
1759 | return; | |
1760 | } | |
1761 | if (!strcmp(netdev_get_type(port->netdev), "internal")) { | |
1762 | if (dev_mtu > p->min_mtu) { | |
1763 | if (!netdev_set_mtu(port->netdev, p->min_mtu)) { | |
1764 | dev_mtu = p->min_mtu; | |
1765 | } | |
1766 | } | |
1767 | port->mtu = dev_mtu; | |
1768 | return; | |
1769 | } | |
1770 | ||
1771 | /* For non-internal port find new min mtu. */ | |
1772 | old_min = p->min_mtu; | |
1773 | port->mtu = dev_mtu; | |
1774 | p->min_mtu = find_min_mtu(p); | |
1775 | if (p->min_mtu == old_min) { | |
1776 | return; | |
1777 | } | |
9197df76 JP |
1778 | |
1779 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
1780 | struct netdev *netdev = ofport->netdev; | |
1781 | ||
1782 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
ada3428f PS |
1783 | if (!netdev_set_mtu(netdev, p->min_mtu)) { |
1784 | ofport->mtu = p->min_mtu; | |
1785 | } | |
9197df76 JP |
1786 | } |
1787 | } | |
1788 | } | |
064af421 | 1789 | \f |
064af421 | 1790 | static void |
abe529af | 1791 | ofproto_rule_destroy__(struct rule *rule) |
064af421 | 1792 | { |
1eae3d33 BP |
1793 | if (rule) { |
1794 | free(rule->actions); | |
1795 | rule->ofproto->ofproto_class->rule_dealloc(rule); | |
1796 | } | |
064af421 BP |
1797 | } |
1798 | ||
7ee20df1 BP |
1799 | /* This function allows an ofproto implementation to destroy any rules that |
1800 | * remain when its ->destruct() function is called. The caller must have | |
1801 | * already uninitialized any derived members of 'rule' (step 5 described in the | |
5bee6e26 JP |
1802 | * large comment in ofproto/ofproto-provider.h titled "Life Cycle"). |
1803 | * This function implements steps 6 and 7. | |
7ee20df1 BP |
1804 | * |
1805 | * This function should only be called from an ofproto implementation's | |
1806 | * ->destruct() function. It is not suitable elsewhere. */ | |
abe529af BP |
1807 | void |
1808 | ofproto_rule_destroy(struct rule *rule) | |
064af421 | 1809 | { |
7ee20df1 | 1810 | assert(!rule->pending); |
d0918789 | 1811 | oftable_remove_rule(rule); |
7ee20df1 | 1812 | ofproto_rule_destroy__(rule); |
064af421 BP |
1813 | } |
1814 | ||
bcf84111 BP |
1815 | /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action |
1816 | * that outputs to 'out_port' (output to OFPP_FLOOD and OFPP_ALL doesn't | |
1817 | * count). */ | |
064af421 | 1818 | static bool |
9ed18e46 | 1819 | rule_has_out_port(const struct rule *rule, uint16_t out_port) |
064af421 BP |
1820 | { |
1821 | const union ofp_action *oa; | |
b4b8c781 | 1822 | size_t left; |
064af421 | 1823 | |
9ed18e46 | 1824 | if (out_port == OFPP_NONE) { |
064af421 BP |
1825 | return true; |
1826 | } | |
b4b8c781 | 1827 | OFPUTIL_ACTION_FOR_EACH_UNSAFE (oa, left, rule->actions, rule->n_actions) { |
9ed18e46 | 1828 | if (action_outputs_to_port(oa, htons(out_port))) { |
064af421 BP |
1829 | return true; |
1830 | } | |
1831 | } | |
1832 | return false; | |
1833 | } | |
1834 | ||
bcf84111 | 1835 | /* Executes the actions indicated by 'rule' on 'packet' and credits 'rule''s |
bcf84111 BP |
1836 | * statistics appropriately. 'packet' must have at least sizeof(struct |
1837 | * ofp_packet_in) bytes of headroom. | |
064af421 | 1838 | * |
bcf84111 BP |
1839 | * 'packet' doesn't necessarily have to match 'rule'. 'rule' will be credited |
1840 | * with statistics for 'packet' either way. | |
1841 | * | |
1842 | * Takes ownership of 'packet'. */ | |
5bf0e941 | 1843 | static int |
abe529af | 1844 | rule_execute(struct rule *rule, uint16_t in_port, struct ofpbuf *packet) |
eedc0097 | 1845 | { |
bcf84111 | 1846 | struct flow flow; |
eedc0097 | 1847 | |
abe529af | 1848 | assert(ofpbuf_headroom(packet) >= sizeof(struct ofp_packet_in)); |
eedc0097 | 1849 | |
abff858b | 1850 | flow_extract(packet, 0, 0, in_port, &flow); |
5bf0e941 | 1851 | return rule->ofproto->ofproto_class->rule_execute(rule, &flow, packet); |
350a665f BP |
1852 | } |
1853 | ||
abe529af BP |
1854 | /* Returns true if 'rule' should be hidden from the controller. |
1855 | * | |
1856 | * Rules with priority higher than UINT16_MAX are set up by ofproto itself | |
1857 | * (e.g. by in-band control) and are intentionally hidden from the | |
1858 | * controller. */ | |
1859 | static bool | |
1860 | rule_is_hidden(const struct rule *rule) | |
b6c9e612 | 1861 | { |
abe529af | 1862 | return rule->cr.priority > UINT16_MAX; |
7b064a79 | 1863 | } |
5c67e4af BP |
1864 | |
1865 | static enum oftable_flags | |
1866 | rule_get_flags(const struct rule *rule) | |
1867 | { | |
1868 | return rule->ofproto->tables[rule->table_id].flags; | |
1869 | } | |
1870 | ||
1871 | static bool | |
1872 | rule_is_modifiable(const struct rule *rule) | |
1873 | { | |
1874 | return !(rule_get_flags(rule) & OFTABLE_READONLY); | |
1875 | } | |
fa066f01 | 1876 | \f |
90bf1e07 | 1877 | static enum ofperr |
d1e2cf21 | 1878 | handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 1879 | { |
b0421aa2 | 1880 | ofconn_send_reply(ofconn, make_echo_reply(oh)); |
064af421 | 1881 | return 0; |
064af421 BP |
1882 | } |
1883 | ||
90bf1e07 | 1884 | static enum ofperr |
d1e2cf21 | 1885 | handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 1886 | { |
64ff1d96 | 1887 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
9e1fd49b | 1888 | struct ofputil_switch_features features; |
064af421 | 1889 | struct ofport *port; |
6c1491fb | 1890 | bool arp_match_ip; |
9e1fd49b | 1891 | struct ofpbuf *b; |
064af421 | 1892 | |
9e1fd49b BP |
1893 | ofproto->ofproto_class->get_features(ofproto, &arp_match_ip, |
1894 | &features.actions); | |
1895 | assert(features.actions & OFPUTIL_A_OUTPUT); /* sanity check */ | |
064af421 | 1896 | |
9e1fd49b BP |
1897 | features.datapath_id = ofproto->datapath_id; |
1898 | features.n_buffers = pktbuf_capacity(); | |
1899 | features.n_tables = ofproto->n_tables; | |
1900 | features.capabilities = (OFPUTIL_C_FLOW_STATS | OFPUTIL_C_TABLE_STATS | | |
1901 | OFPUTIL_C_PORT_STATS | OFPUTIL_C_QUEUE_STATS); | |
6c1491fb | 1902 | if (arp_match_ip) { |
9e1fd49b | 1903 | features.capabilities |= OFPUTIL_C_ARP_MATCH_IP; |
6c1491fb | 1904 | } |
064af421 | 1905 | |
9e1fd49b BP |
1906 | b = ofputil_encode_switch_features(&features, ofconn_get_protocol(ofconn), |
1907 | oh->xid); | |
64ff1d96 | 1908 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
9e1fd49b | 1909 | ofputil_put_switch_features_port(&port->pp, b); |
064af421 | 1910 | } |
064af421 | 1911 | |
9e1fd49b | 1912 | ofconn_send_reply(ofconn, b); |
064af421 BP |
1913 | return 0; |
1914 | } | |
064af421 | 1915 | |
90bf1e07 | 1916 | static enum ofperr |
d1e2cf21 | 1917 | handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 1918 | { |
64ff1d96 | 1919 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 | 1920 | struct ofp_switch_config *osc; |
f0fd1a17 | 1921 | enum ofp_config_flags flags; |
7257b535 | 1922 | struct ofpbuf *buf; |
959a2ecd | 1923 | |
064af421 BP |
1924 | /* Send reply. */ |
1925 | osc = make_openflow_xid(sizeof *osc, OFPT_GET_CONFIG_REPLY, oh->xid, &buf); | |
f0fd1a17 PS |
1926 | flags = ofproto->frag_handling; |
1927 | if (ofconn_get_invalid_ttl_to_controller(ofconn)) { | |
1928 | flags |= OFPC_INVALID_TTL_TO_CONTROLLER; | |
1929 | } | |
1930 | osc->flags = htons(flags); | |
810605a2 | 1931 | osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn)); |
b0421aa2 | 1932 | ofconn_send_reply(ofconn, buf); |
2d70a31a | 1933 | |
064af421 BP |
1934 | return 0; |
1935 | } | |
064af421 | 1936 | |
90bf1e07 | 1937 | static enum ofperr |
d1e2cf21 | 1938 | handle_set_config(struct ofconn *ofconn, const struct ofp_switch_config *osc) |
064af421 | 1939 | { |
64ff1d96 | 1940 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
d1e2cf21 | 1941 | uint16_t flags = ntohs(osc->flags); |
2d70a31a | 1942 | |
7257b535 BP |
1943 | if (ofconn_get_type(ofconn) != OFCONN_PRIMARY |
1944 | || ofconn_get_role(ofconn) != NX_ROLE_SLAVE) { | |
1945 | enum ofp_config_flags cur = ofproto->frag_handling; | |
1946 | enum ofp_config_flags next = flags & OFPC_FRAG_MASK; | |
1947 | ||
1948 | assert((cur & OFPC_FRAG_MASK) == cur); | |
1949 | if (cur != next) { | |
1950 | if (ofproto->ofproto_class->set_frag_handling(ofproto, next)) { | |
1951 | ofproto->frag_handling = next; | |
1952 | } else { | |
1953 | VLOG_WARN_RL(&rl, "%s: unsupported fragment handling mode %s", | |
1954 | ofproto->name, | |
1955 | ofputil_frag_handling_to_string(next)); | |
1956 | } | |
064af421 BP |
1957 | } |
1958 | } | |
f0fd1a17 | 1959 | ofconn_set_invalid_ttl_to_controller(ofconn, |
05fe1764 | 1960 | (flags & OFPC_INVALID_TTL_TO_CONTROLLER)); |
ebe482fd | 1961 | |
810605a2 | 1962 | ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len)); |
0ad9b732 | 1963 | |
064af421 | 1964 | return 0; |
064af421 BP |
1965 | } |
1966 | ||
9deba63b | 1967 | /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow |
90bf1e07 BP |
1968 | * error message code for the caller to propagate upward. Otherwise, returns |
1969 | * 0. | |
1970 | * | |
1971 | * The log message mentions 'msg_type'. */ | |
1972 | static enum ofperr | |
1973 | reject_slave_controller(struct ofconn *ofconn) | |
9deba63b | 1974 | { |
1ce0a5fa BP |
1975 | if (ofconn_get_type(ofconn) == OFCONN_PRIMARY |
1976 | && ofconn_get_role(ofconn) == NX_ROLE_SLAVE) { | |
90bf1e07 | 1977 | return OFPERR_OFPBRC_EPERM; |
9deba63b BP |
1978 | } else { |
1979 | return 0; | |
1980 | } | |
1981 | } | |
1982 | ||
90bf1e07 | 1983 | static enum ofperr |
c6a93eb7 | 1984 | handle_packet_out(struct ofconn *ofconn, const struct ofp_packet_out *opo) |
064af421 | 1985 | { |
64ff1d96 | 1986 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
c6a93eb7 BP |
1987 | struct ofputil_packet_out po; |
1988 | struct ofpbuf *payload; | |
ae412e7d | 1989 | struct flow flow; |
90bf1e07 | 1990 | enum ofperr error; |
064af421 | 1991 | |
ac51afaf BP |
1992 | COVERAGE_INC(ofproto_packet_out); |
1993 | ||
76589937 | 1994 | error = reject_slave_controller(ofconn); |
9deba63b BP |
1995 | if (error) { |
1996 | return error; | |
1997 | } | |
1998 | ||
c6a93eb7 BP |
1999 | /* Decode message. */ |
2000 | error = ofputil_decode_packet_out(&po, opo); | |
064af421 BP |
2001 | if (error) { |
2002 | return error; | |
2003 | } | |
064af421 | 2004 | |
ac51afaf | 2005 | /* Get payload. */ |
c6a93eb7 BP |
2006 | if (po.buffer_id != UINT32_MAX) { |
2007 | error = ofconn_pktbuf_retrieve(ofconn, po.buffer_id, &payload, NULL); | |
2008 | if (error || !payload) { | |
064af421 BP |
2009 | return error; |
2010 | } | |
064af421 | 2011 | } else { |
c6a93eb7 BP |
2012 | payload = xmalloc(sizeof *payload); |
2013 | ofpbuf_use_const(payload, po.packet, po.packet_len); | |
e1154f71 BP |
2014 | } |
2015 | ||
abe529af | 2016 | /* Send out packet. */ |
c6a93eb7 BP |
2017 | flow_extract(payload, 0, 0, po.in_port, &flow); |
2018 | error = p->ofproto_class->packet_out(p, payload, &flow, | |
2019 | po.actions, po.n_actions); | |
2020 | ofpbuf_delete(payload); | |
abe529af BP |
2021 | |
2022 | return error; | |
064af421 BP |
2023 | } |
2024 | ||
2025 | static void | |
9e1fd49b BP |
2026 | update_port_config(struct ofport *port, |
2027 | enum ofputil_port_config config, | |
2028 | enum ofputil_port_config mask) | |
064af421 | 2029 | { |
9e1fd49b BP |
2030 | enum ofputil_port_config old_config = port->pp.config; |
2031 | enum ofputil_port_config toggle; | |
abe529af | 2032 | |
9e1fd49b BP |
2033 | toggle = (config ^ port->pp.config) & mask; |
2034 | if (toggle & OFPUTIL_PC_PORT_DOWN) { | |
2035 | if (config & OFPUTIL_PC_PORT_DOWN) { | |
064af421 BP |
2036 | netdev_turn_flags_off(port->netdev, NETDEV_UP, true); |
2037 | } else { | |
2038 | netdev_turn_flags_on(port->netdev, NETDEV_UP, true); | |
2039 | } | |
9e1fd49b | 2040 | toggle &= ~OFPUTIL_PC_PORT_DOWN; |
064af421 | 2041 | } |
abe529af | 2042 | |
9e1fd49b BP |
2043 | port->pp.config ^= toggle; |
2044 | if (port->pp.config != old_config) { | |
abe529af | 2045 | port->ofproto->ofproto_class->port_reconfigured(port, old_config); |
064af421 BP |
2046 | } |
2047 | } | |
2048 | ||
90bf1e07 | 2049 | static enum ofperr |
d1e2cf21 | 2050 | handle_port_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2051 | { |
64ff1d96 | 2052 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
9e1fd49b | 2053 | struct ofputil_port_mod pm; |
064af421 | 2054 | struct ofport *port; |
9e1fd49b | 2055 | enum ofperr error; |
064af421 | 2056 | |
76589937 | 2057 | error = reject_slave_controller(ofconn); |
9deba63b BP |
2058 | if (error) { |
2059 | return error; | |
2060 | } | |
064af421 | 2061 | |
9e1fd49b BP |
2062 | error = ofputil_decode_port_mod(oh, &pm); |
2063 | if (error) { | |
2064 | return error; | |
2065 | } | |
2066 | ||
2067 | port = ofproto_get_port(p, pm.port_no); | |
064af421 | 2068 | if (!port) { |
90bf1e07 | 2069 | return OFPERR_OFPPMFC_BAD_PORT; |
9e1fd49b | 2070 | } else if (!eth_addr_equals(port->pp.hw_addr, pm.hw_addr)) { |
90bf1e07 | 2071 | return OFPERR_OFPPMFC_BAD_HW_ADDR; |
064af421 | 2072 | } else { |
9e1fd49b BP |
2073 | update_port_config(port, pm.config, pm.mask); |
2074 | if (pm.advertise) { | |
2075 | netdev_set_advertisements(port->netdev, pm.advertise); | |
064af421 BP |
2076 | } |
2077 | } | |
2078 | return 0; | |
2079 | } | |
2080 | ||
90bf1e07 | 2081 | static enum ofperr |
3269c562 | 2082 | handle_desc_stats_request(struct ofconn *ofconn, |
63f2140a | 2083 | const struct ofp_stats_msg *request) |
064af421 | 2084 | { |
64ff1d96 | 2085 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 BP |
2086 | struct ofp_desc_stats *ods; |
2087 | struct ofpbuf *msg; | |
2088 | ||
63f2140a | 2089 | ods = ofputil_make_stats_reply(sizeof *ods, request, &msg); |
5a719c38 JP |
2090 | ovs_strlcpy(ods->mfr_desc, p->mfr_desc, sizeof ods->mfr_desc); |
2091 | ovs_strlcpy(ods->hw_desc, p->hw_desc, sizeof ods->hw_desc); | |
2092 | ovs_strlcpy(ods->sw_desc, p->sw_desc, sizeof ods->sw_desc); | |
2093 | ovs_strlcpy(ods->serial_num, p->serial_desc, sizeof ods->serial_num); | |
2094 | ovs_strlcpy(ods->dp_desc, p->dp_desc, sizeof ods->dp_desc); | |
b0421aa2 | 2095 | ofconn_send_reply(ofconn, msg); |
064af421 BP |
2096 | |
2097 | return 0; | |
2098 | } | |
2099 | ||
90bf1e07 | 2100 | static enum ofperr |
3269c562 | 2101 | handle_table_stats_request(struct ofconn *ofconn, |
63f2140a | 2102 | const struct ofp_stats_msg *request) |
064af421 | 2103 | { |
64ff1d96 | 2104 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 BP |
2105 | struct ofp_table_stats *ots; |
2106 | struct ofpbuf *msg; | |
6c1491fb | 2107 | size_t i; |
064af421 | 2108 | |
63f2140a | 2109 | ofputil_make_stats_reply(sizeof(struct ofp_stats_msg), request, &msg); |
064af421 | 2110 | |
6c1491fb BP |
2111 | ots = ofpbuf_put_zeros(msg, sizeof *ots * p->n_tables); |
2112 | for (i = 0; i < p->n_tables; i++) { | |
2113 | ots[i].table_id = i; | |
35aa7a21 | 2114 | sprintf(ots[i].name, "table%zu", i); |
00794817 | 2115 | ots[i].wildcards = htonl(OFPFW_ALL); |
6c1491fb | 2116 | ots[i].max_entries = htonl(1000000); /* An arbitrary big number. */ |
d0918789 | 2117 | ots[i].active_count = htonl(classifier_count(&p->tables[i].cls)); |
6c1491fb | 2118 | } |
064af421 | 2119 | |
6c1491fb | 2120 | p->ofproto_class->get_tables(p, ots); |
064af421 | 2121 | |
254750ce BP |
2122 | for (i = 0; i < p->n_tables; i++) { |
2123 | const struct oftable *table = &p->tables[i]; | |
2124 | ||
2125 | if (table->name) { | |
2126 | ovs_strzcpy(ots[i].name, table->name, sizeof ots[i].name); | |
2127 | } | |
2128 | ||
2129 | if (table->max_flows < ntohl(ots[i].max_entries)) { | |
2130 | ots[i].max_entries = htonl(table->max_flows); | |
2131 | } | |
2132 | } | |
2133 | ||
b0421aa2 | 2134 | ofconn_send_reply(ofconn, msg); |
064af421 BP |
2135 | return 0; |
2136 | } | |
2137 | ||
abaad8cf | 2138 | static void |
63f2140a | 2139 | append_port_stat(struct ofport *port, struct list *replies) |
abaad8cf JP |
2140 | { |
2141 | struct netdev_stats stats; | |
2142 | struct ofp_port_stats *ops; | |
2143 | ||
d295e8e9 JP |
2144 | /* Intentionally ignore return value, since errors will set |
2145 | * 'stats' to all-1s, which is correct for OpenFlow, and | |
abaad8cf | 2146 | * netdev_get_stats() will log errors. */ |
6527c598 | 2147 | ofproto_port_get_stats(port, &stats); |
abaad8cf | 2148 | |
63f2140a | 2149 | ops = ofputil_append_stats_reply(sizeof *ops, replies); |
9e1fd49b | 2150 | ops->port_no = htons(port->pp.port_no); |
abaad8cf | 2151 | memset(ops->pad, 0, sizeof ops->pad); |
c4617b3c BP |
2152 | put_32aligned_be64(&ops->rx_packets, htonll(stats.rx_packets)); |
2153 | put_32aligned_be64(&ops->tx_packets, htonll(stats.tx_packets)); | |
2154 | put_32aligned_be64(&ops->rx_bytes, htonll(stats.rx_bytes)); | |
2155 | put_32aligned_be64(&ops->tx_bytes, htonll(stats.tx_bytes)); | |
2156 | put_32aligned_be64(&ops->rx_dropped, htonll(stats.rx_dropped)); | |
2157 | put_32aligned_be64(&ops->tx_dropped, htonll(stats.tx_dropped)); | |
2158 | put_32aligned_be64(&ops->rx_errors, htonll(stats.rx_errors)); | |
2159 | put_32aligned_be64(&ops->tx_errors, htonll(stats.tx_errors)); | |
2160 | put_32aligned_be64(&ops->rx_frame_err, htonll(stats.rx_frame_errors)); | |
2161 | put_32aligned_be64(&ops->rx_over_err, htonll(stats.rx_over_errors)); | |
2162 | put_32aligned_be64(&ops->rx_crc_err, htonll(stats.rx_crc_errors)); | |
2163 | put_32aligned_be64(&ops->collisions, htonll(stats.collisions)); | |
abaad8cf JP |
2164 | } |
2165 | ||
90bf1e07 | 2166 | static enum ofperr |
63f2140a BP |
2167 | handle_port_stats_request(struct ofconn *ofconn, |
2168 | const struct ofp_port_stats_request *psr) | |
064af421 | 2169 | { |
64ff1d96 | 2170 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 | 2171 | struct ofport *port; |
63f2140a | 2172 | struct list replies; |
064af421 | 2173 | |
63f2140a | 2174 | ofputil_start_stats_reply(&psr->osm, &replies); |
abaad8cf | 2175 | if (psr->port_no != htons(OFPP_NONE)) { |
abe529af | 2176 | port = ofproto_get_port(p, ntohs(psr->port_no)); |
abaad8cf | 2177 | if (port) { |
63f2140a | 2178 | append_port_stat(port, &replies); |
abaad8cf JP |
2179 | } |
2180 | } else { | |
4e8e4213 | 2181 | HMAP_FOR_EACH (port, hmap_node, &p->ports) { |
63f2140a | 2182 | append_port_stat(port, &replies); |
abaad8cf | 2183 | } |
064af421 BP |
2184 | } |
2185 | ||
63f2140a | 2186 | ofconn_send_replies(ofconn, &replies); |
064af421 BP |
2187 | return 0; |
2188 | } | |
2189 | ||
c6ebb8fb | 2190 | static void |
f27f2134 BP |
2191 | calc_flow_duration__(long long int start, long long int now, |
2192 | uint32_t *sec, uint32_t *nsec) | |
c6ebb8fb | 2193 | { |
f27f2134 | 2194 | long long int msecs = now - start; |
588cd7b5 BP |
2195 | *sec = msecs / 1000; |
2196 | *nsec = (msecs % 1000) * (1000 * 1000); | |
2197 | } | |
2198 | ||
48266274 BP |
2199 | /* Checks whether 'table_id' is 0xff or a valid table ID in 'ofproto'. Returns |
2200 | * 0 if 'table_id' is OK, otherwise an OpenFlow error code. */ | |
90bf1e07 | 2201 | static enum ofperr |
48266274 BP |
2202 | check_table_id(const struct ofproto *ofproto, uint8_t table_id) |
2203 | { | |
2204 | return (table_id == 0xff || table_id < ofproto->n_tables | |
2205 | ? 0 | |
90bf1e07 | 2206 | : OFPERR_NXBRC_BAD_TABLE_ID); |
48266274 BP |
2207 | |
2208 | } | |
2209 | ||
5c67e4af BP |
2210 | static struct oftable * |
2211 | next_visible_table(struct ofproto *ofproto, uint8_t table_id) | |
2212 | { | |
2213 | struct oftable *table; | |
2214 | ||
2215 | for (table = &ofproto->tables[table_id]; | |
2216 | table < &ofproto->tables[ofproto->n_tables]; | |
2217 | table++) { | |
2218 | if (!(table->flags & OFTABLE_HIDDEN)) { | |
2219 | return table; | |
2220 | } | |
2221 | } | |
2222 | ||
2223 | return NULL; | |
2224 | } | |
2225 | ||
d0918789 | 2226 | static struct oftable * |
6c1491fb | 2227 | first_matching_table(struct ofproto *ofproto, uint8_t table_id) |
064af421 | 2228 | { |
6c1491fb | 2229 | if (table_id == 0xff) { |
5c67e4af | 2230 | return next_visible_table(ofproto, 0); |
6c1491fb BP |
2231 | } else if (table_id < ofproto->n_tables) { |
2232 | return &ofproto->tables[table_id]; | |
a02e5331 | 2233 | } else { |
6c1491fb | 2234 | return NULL; |
a02e5331 | 2235 | } |
064af421 BP |
2236 | } |
2237 | ||
d0918789 | 2238 | static struct oftable * |
6c1491fb | 2239 | next_matching_table(struct ofproto *ofproto, |
d0918789 | 2240 | struct oftable *table, uint8_t table_id) |
6c1491fb | 2241 | { |
5c67e4af BP |
2242 | return (table_id == 0xff |
2243 | ? next_visible_table(ofproto, (table - ofproto->tables) + 1) | |
6c1491fb BP |
2244 | : NULL); |
2245 | } | |
2246 | ||
d0918789 | 2247 | /* Assigns TABLE to each oftable, in turn, that matches TABLE_ID in OFPROTO: |
6c1491fb BP |
2248 | * |
2249 | * - If TABLE_ID is 0xff, this iterates over every classifier table in | |
5c67e4af | 2250 | * OFPROTO, skipping tables marked OFTABLE_HIDDEN. |
6c1491fb BP |
2251 | * |
2252 | * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates | |
5c67e4af BP |
2253 | * only once, for that table. (This can be used to access tables marked |
2254 | * OFTABLE_HIDDEN.) | |
6c1491fb | 2255 | * |
48266274 BP |
2256 | * - Otherwise, TABLE_ID isn't valid for OFPROTO, so the loop won't be |
2257 | * entered at all. (Perhaps you should have validated TABLE_ID with | |
2258 | * check_table_id().) | |
6c1491fb BP |
2259 | * |
2260 | * All parameters are evaluated multiple times. | |
2261 | */ | |
d0918789 BP |
2262 | #define FOR_EACH_MATCHING_TABLE(TABLE, TABLE_ID, OFPROTO) \ |
2263 | for ((TABLE) = first_matching_table(OFPROTO, TABLE_ID); \ | |
2264 | (TABLE) != NULL; \ | |
2265 | (TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID)) | |
6c1491fb | 2266 | |
9ed18e46 BP |
2267 | /* Searches 'ofproto' for rules in table 'table_id' (or in all tables, if |
2268 | * 'table_id' is 0xff) that match 'match' in the "loose" way required for | |
2269 | * OpenFlow OFPFC_MODIFY and OFPFC_DELETE requests and puts them on list | |
2270 | * 'rules'. | |
2271 | * | |
2272 | * If 'out_port' is anything other than OFPP_NONE, then only rules that output | |
2273 | * to 'out_port' are included. | |
2274 | * | |
2275 | * Hidden rules are always omitted. | |
2276 | * | |
2277 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 2278 | static enum ofperr |
9ed18e46 | 2279 | collect_rules_loose(struct ofproto *ofproto, uint8_t table_id, |
e729e793 JP |
2280 | const struct cls_rule *match, |
2281 | ovs_be64 cookie, ovs_be64 cookie_mask, | |
2282 | uint16_t out_port, struct list *rules) | |
9ed18e46 | 2283 | { |
d0918789 | 2284 | struct oftable *table; |
90bf1e07 | 2285 | enum ofperr error; |
48266274 BP |
2286 | |
2287 | error = check_table_id(ofproto, table_id); | |
2288 | if (error) { | |
2289 | return error; | |
2290 | } | |
9ed18e46 BP |
2291 | |
2292 | list_init(rules); | |
d0918789 | 2293 | FOR_EACH_MATCHING_TABLE (table, table_id, ofproto) { |
9ed18e46 BP |
2294 | struct cls_cursor cursor; |
2295 | struct rule *rule; | |
2296 | ||
d0918789 | 2297 | cls_cursor_init(&cursor, &table->cls, match); |
9ed18e46 | 2298 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
7ee20df1 BP |
2299 | if (rule->pending) { |
2300 | return OFPROTO_POSTPONE; | |
2301 | } | |
e729e793 JP |
2302 | if (!rule_is_hidden(rule) && rule_has_out_port(rule, out_port) |
2303 | && !((rule->flow_cookie ^ cookie) & cookie_mask)) { | |
9ed18e46 BP |
2304 | list_push_back(rules, &rule->ofproto_node); |
2305 | } | |
2306 | } | |
2307 | } | |
2308 | return 0; | |
2309 | } | |
2310 | ||
2311 | /* Searches 'ofproto' for rules in table 'table_id' (or in all tables, if | |
2312 | * 'table_id' is 0xff) that match 'match' in the "strict" way required for | |
2313 | * OpenFlow OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests and puts them | |
2314 | * on list 'rules'. | |
2315 | * | |
2316 | * If 'out_port' is anything other than OFPP_NONE, then only rules that output | |
2317 | * to 'out_port' are included. | |
2318 | * | |
2319 | * Hidden rules are always omitted. | |
2320 | * | |
2321 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 2322 | static enum ofperr |
9ed18e46 | 2323 | collect_rules_strict(struct ofproto *ofproto, uint8_t table_id, |
e729e793 JP |
2324 | const struct cls_rule *match, |
2325 | ovs_be64 cookie, ovs_be64 cookie_mask, | |
2326 | uint16_t out_port, struct list *rules) | |
9ed18e46 | 2327 | { |
d0918789 | 2328 | struct oftable *table; |
48266274 BP |
2329 | int error; |
2330 | ||
2331 | error = check_table_id(ofproto, table_id); | |
2332 | if (error) { | |
2333 | return error; | |
2334 | } | |
9ed18e46 BP |
2335 | |
2336 | list_init(rules); | |
d0918789 | 2337 | FOR_EACH_MATCHING_TABLE (table, table_id, ofproto) { |
9ed18e46 BP |
2338 | struct rule *rule; |
2339 | ||
d0918789 BP |
2340 | rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls, |
2341 | match)); | |
9ed18e46 | 2342 | if (rule) { |
7ee20df1 BP |
2343 | if (rule->pending) { |
2344 | return OFPROTO_POSTPONE; | |
2345 | } | |
e729e793 JP |
2346 | if (!rule_is_hidden(rule) && rule_has_out_port(rule, out_port) |
2347 | && !((rule->flow_cookie ^ cookie) & cookie_mask)) { | |
9ed18e46 BP |
2348 | list_push_back(rules, &rule->ofproto_node); |
2349 | } | |
2350 | } | |
2351 | } | |
2352 | return 0; | |
2353 | } | |
2354 | ||
f27f2134 BP |
2355 | /* Returns 'age_ms' (a duration in milliseconds), converted to seconds and |
2356 | * forced into the range of a uint16_t. */ | |
2357 | static int | |
2358 | age_secs(long long int age_ms) | |
2359 | { | |
2360 | return (age_ms < 0 ? 0 | |
2361 | : age_ms >= UINT16_MAX * 1000 ? UINT16_MAX | |
2362 | : (unsigned int) age_ms / 1000); | |
2363 | } | |
2364 | ||
90bf1e07 | 2365 | static enum ofperr |
63f2140a | 2366 | handle_flow_stats_request(struct ofconn *ofconn, |
349adfb2 | 2367 | const struct ofp_stats_msg *osm) |
064af421 | 2368 | { |
64ff1d96 | 2369 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 2370 | struct ofputil_flow_stats_request fsr; |
63f2140a | 2371 | struct list replies; |
9ed18e46 BP |
2372 | struct list rules; |
2373 | struct rule *rule; | |
90bf1e07 | 2374 | enum ofperr error; |
09246b99 | 2375 | |
349adfb2 | 2376 | error = ofputil_decode_flow_stats_request(&fsr, &osm->header); |
09246b99 BP |
2377 | if (error) { |
2378 | return error; | |
2379 | } | |
2380 | ||
9ed18e46 | 2381 | error = collect_rules_loose(ofproto, fsr.table_id, &fsr.match, |
e729e793 | 2382 | fsr.cookie, fsr.cookie_mask, |
9ed18e46 BP |
2383 | fsr.out_port, &rules); |
2384 | if (error) { | |
2385 | return error; | |
2386 | } | |
5ecc9d81 | 2387 | |
9ed18e46 BP |
2388 | ofputil_start_stats_reply(osm, &replies); |
2389 | LIST_FOR_EACH (rule, ofproto_node, &rules) { | |
f27f2134 | 2390 | long long int now = time_msec(); |
9ed18e46 BP |
2391 | struct ofputil_flow_stats fs; |
2392 | ||
2393 | fs.rule = rule->cr; | |
2394 | fs.cookie = rule->flow_cookie; | |
2395 | fs.table_id = rule->table_id; | |
f27f2134 | 2396 | calc_flow_duration__(rule->created, now, &fs.duration_sec, |
9ed18e46 BP |
2397 | &fs.duration_nsec); |
2398 | fs.idle_timeout = rule->idle_timeout; | |
2399 | fs.hard_timeout = rule->hard_timeout; | |
f27f2134 BP |
2400 | fs.idle_age = age_secs(now - rule->used); |
2401 | fs.hard_age = age_secs(now - rule->modified); | |
9ed18e46 BP |
2402 | ofproto->ofproto_class->rule_get_stats(rule, &fs.packet_count, |
2403 | &fs.byte_count); | |
2404 | fs.actions = rule->actions; | |
2405 | fs.n_actions = rule->n_actions; | |
2406 | ofputil_append_flow_stats_reply(&fs, &replies); | |
3c4486a5 | 2407 | } |
63f2140a | 2408 | ofconn_send_replies(ofconn, &replies); |
5ecc9d81 | 2409 | |
09246b99 BP |
2410 | return 0; |
2411 | } | |
2412 | ||
4f2cad2c | 2413 | static void |
3394b5b6 | 2414 | flow_stats_ds(struct rule *rule, struct ds *results) |
4f2cad2c | 2415 | { |
4f2cad2c | 2416 | uint64_t packet_count, byte_count; |
4f2cad2c | 2417 | |
abe529af BP |
2418 | rule->ofproto->ofproto_class->rule_get_stats(rule, |
2419 | &packet_count, &byte_count); | |
4f2cad2c | 2420 | |
6c1491fb BP |
2421 | if (rule->table_id != 0) { |
2422 | ds_put_format(results, "table_id=%"PRIu8", ", rule->table_id); | |
2423 | } | |
4f2cad2c JP |
2424 | ds_put_format(results, "duration=%llds, ", |
2425 | (time_msec() - rule->created) / 1000); | |
52ae00b3 | 2426 | ds_put_format(results, "priority=%u, ", rule->cr.priority); |
4f2cad2c JP |
2427 | ds_put_format(results, "n_packets=%"PRIu64", ", packet_count); |
2428 | ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count); | |
cb833cf6 | 2429 | cls_rule_format(&rule->cr, results); |
a5df0e72 | 2430 | ds_put_char(results, ','); |
b4b8c781 BP |
2431 | if (rule->n_actions > 0) { |
2432 | ofp_print_actions(results, rule->actions, rule->n_actions); | |
3c8552c1 JP |
2433 | } else { |
2434 | ds_put_cstr(results, "drop"); | |
3dffcf07 | 2435 | } |
4f2cad2c JP |
2436 | ds_put_cstr(results, "\n"); |
2437 | } | |
2438 | ||
d295e8e9 | 2439 | /* Adds a pretty-printed description of all flows to 'results', including |
ee8b231c | 2440 | * hidden flows (e.g., set up by in-band control). */ |
4f2cad2c JP |
2441 | void |
2442 | ofproto_get_all_flows(struct ofproto *p, struct ds *results) | |
2443 | { | |
d0918789 | 2444 | struct oftable *table; |
6c1491fb | 2445 | |
d0918789 | 2446 | OFPROTO_FOR_EACH_TABLE (table, p) { |
6c1491fb BP |
2447 | struct cls_cursor cursor; |
2448 | struct rule *rule; | |
064af421 | 2449 | |
d0918789 | 2450 | cls_cursor_init(&cursor, &table->cls, NULL); |
6c1491fb BP |
2451 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
2452 | flow_stats_ds(rule, results); | |
2453 | } | |
064af421 | 2454 | } |
064af421 BP |
2455 | } |
2456 | ||
b5827b24 BP |
2457 | /* Obtains the NetFlow engine type and engine ID for 'ofproto' into |
2458 | * '*engine_type' and '*engine_id', respectively. */ | |
2459 | void | |
2460 | ofproto_get_netflow_ids(const struct ofproto *ofproto, | |
2461 | uint8_t *engine_type, uint8_t *engine_id) | |
2462 | { | |
abe529af | 2463 | ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id); |
b5827b24 BP |
2464 | } |
2465 | ||
b9380396 EJ |
2466 | /* Checks the fault status of CFM for 'ofp_port' within 'ofproto'. Returns a |
2467 | * bitmask of 'cfm_fault_reason's to indicate a CFM fault (generally | |
2468 | * indicating a connectivity problem). Returns zero if CFM is not faulted, | |
2469 | * and -1 if CFM is not enabled on 'port'. */ | |
a5610457 EJ |
2470 | int |
2471 | ofproto_port_get_cfm_fault(const struct ofproto *ofproto, uint16_t ofp_port) | |
2472 | { | |
2473 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
2474 | return (ofport && ofproto->ofproto_class->get_cfm_fault | |
2475 | ? ofproto->ofproto_class->get_cfm_fault(ofport) | |
2476 | : -1); | |
2477 | } | |
2478 | ||
1de11730 EJ |
2479 | /* Gets the MPIDs of the remote maintenance points broadcasting to 'ofp_port' |
2480 | * within 'ofproto'. Populates 'rmps' with an array of MPIDs owned by | |
2481 | * 'ofproto', and 'n_rmps' with the number of MPIDs in 'rmps'. Returns a | |
2482 | * number less than 0 if CFM is not enabled on 'ofp_port'. */ | |
2483 | int | |
2484 | ofproto_port_get_cfm_remote_mpids(const struct ofproto *ofproto, | |
2485 | uint16_t ofp_port, const uint64_t **rmps, | |
2486 | size_t *n_rmps) | |
2487 | { | |
2488 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
2489 | ||
2490 | *rmps = NULL; | |
2491 | *n_rmps = 0; | |
2492 | return (ofport && ofproto->ofproto_class->get_cfm_remote_mpids | |
2493 | ? ofproto->ofproto_class->get_cfm_remote_mpids(ofport, rmps, | |
2494 | n_rmps) | |
2495 | : -1); | |
2496 | } | |
2497 | ||
3967a833 MM |
2498 | /* Checks the health of the CFM for 'ofp_port' within 'ofproto'. Returns an |
2499 | * integer value between 0 and 100 to indicate the health of the port as a | |
2500 | * percentage which is the average of cfm health of all the remote_mpids or | |
2501 | * returns -1 if CFM is not enabled on 'ofport'. */ | |
2502 | int | |
2503 | ofproto_port_get_cfm_health(const struct ofproto *ofproto, uint16_t ofp_port) | |
2504 | { | |
2505 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
2506 | return (ofport && ofproto->ofproto_class->get_cfm_health | |
2507 | ? ofproto->ofproto_class->get_cfm_health(ofport) | |
2508 | : -1); | |
2509 | } | |
2510 | ||
90bf1e07 | 2511 | static enum ofperr |
76c93b22 BP |
2512 | handle_aggregate_stats_request(struct ofconn *ofconn, |
2513 | const struct ofp_stats_msg *osm) | |
27d34fce | 2514 | { |
76c93b22 | 2515 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 2516 | struct ofputil_flow_stats_request request; |
76c93b22 | 2517 | struct ofputil_aggregate_stats stats; |
5e9d0469 | 2518 | bool unknown_packets, unknown_bytes; |
76c93b22 | 2519 | struct ofpbuf *reply; |
9ed18e46 BP |
2520 | struct list rules; |
2521 | struct rule *rule; | |
90bf1e07 | 2522 | enum ofperr error; |
27d34fce | 2523 | |
76c93b22 BP |
2524 | error = ofputil_decode_flow_stats_request(&request, &osm->header); |
2525 | if (error) { | |
2526 | return error; | |
2527 | } | |
5ecc9d81 | 2528 | |
9ed18e46 | 2529 | error = collect_rules_loose(ofproto, request.table_id, &request.match, |
e729e793 | 2530 | request.cookie, request.cookie_mask, |
9ed18e46 BP |
2531 | request.out_port, &rules); |
2532 | if (error) { | |
2533 | return error; | |
2534 | } | |
3c4486a5 | 2535 | |
9ed18e46 | 2536 | memset(&stats, 0, sizeof stats); |
5e9d0469 | 2537 | unknown_packets = unknown_bytes = false; |
9ed18e46 BP |
2538 | LIST_FOR_EACH (rule, ofproto_node, &rules) { |
2539 | uint64_t packet_count; | |
2540 | uint64_t byte_count; | |
5ecc9d81 | 2541 | |
9ed18e46 BP |
2542 | ofproto->ofproto_class->rule_get_stats(rule, &packet_count, |
2543 | &byte_count); | |
5ecc9d81 | 2544 | |
5e9d0469 BP |
2545 | if (packet_count == UINT64_MAX) { |
2546 | unknown_packets = true; | |
2547 | } else { | |
2548 | stats.packet_count += packet_count; | |
2549 | } | |
2550 | ||
2551 | if (byte_count == UINT64_MAX) { | |
2552 | unknown_bytes = true; | |
2553 | } else { | |
2554 | stats.byte_count += byte_count; | |
2555 | } | |
2556 | ||
9ed18e46 | 2557 | stats.flow_count++; |
3c4486a5 | 2558 | } |
5e9d0469 BP |
2559 | if (unknown_packets) { |
2560 | stats.packet_count = UINT64_MAX; | |
2561 | } | |
2562 | if (unknown_bytes) { | |
2563 | stats.byte_count = UINT64_MAX; | |
2564 | } | |
27d34fce | 2565 | |
76c93b22 BP |
2566 | reply = ofputil_encode_aggregate_stats_reply(&stats, osm); |
2567 | ofconn_send_reply(ofconn, reply); | |
09246b99 BP |
2568 | |
2569 | return 0; | |
2570 | } | |
2571 | ||
c1c9c9c4 | 2572 | struct queue_stats_cbdata { |
ca0f572c | 2573 | struct ofport *ofport; |
63f2140a | 2574 | struct list replies; |
c1c9c9c4 BP |
2575 | }; |
2576 | ||
2577 | static void | |
db9220c3 | 2578 | put_queue_stats(struct queue_stats_cbdata *cbdata, uint32_t queue_id, |
c1c9c9c4 BP |
2579 | const struct netdev_queue_stats *stats) |
2580 | { | |
2581 | struct ofp_queue_stats *reply; | |
2582 | ||
63f2140a | 2583 | reply = ofputil_append_stats_reply(sizeof *reply, &cbdata->replies); |
9e1fd49b | 2584 | reply->port_no = htons(cbdata->ofport->pp.port_no); |
c1c9c9c4 BP |
2585 | memset(reply->pad, 0, sizeof reply->pad); |
2586 | reply->queue_id = htonl(queue_id); | |
c4617b3c BP |
2587 | put_32aligned_be64(&reply->tx_bytes, htonll(stats->tx_bytes)); |
2588 | put_32aligned_be64(&reply->tx_packets, htonll(stats->tx_packets)); | |
2589 | put_32aligned_be64(&reply->tx_errors, htonll(stats->tx_errors)); | |
c1c9c9c4 BP |
2590 | } |
2591 | ||
2592 | static void | |
db9220c3 | 2593 | handle_queue_stats_dump_cb(uint32_t queue_id, |
c1c9c9c4 BP |
2594 | struct netdev_queue_stats *stats, |
2595 | void *cbdata_) | |
2596 | { | |
2597 | struct queue_stats_cbdata *cbdata = cbdata_; | |
2598 | ||
2599 | put_queue_stats(cbdata, queue_id, stats); | |
2600 | } | |
2601 | ||
2602 | static void | |
ca0f572c | 2603 | handle_queue_stats_for_port(struct ofport *port, uint32_t queue_id, |
c1c9c9c4 BP |
2604 | struct queue_stats_cbdata *cbdata) |
2605 | { | |
ca0f572c | 2606 | cbdata->ofport = port; |
c1c9c9c4 BP |
2607 | if (queue_id == OFPQ_ALL) { |
2608 | netdev_dump_queue_stats(port->netdev, | |
2609 | handle_queue_stats_dump_cb, cbdata); | |
2610 | } else { | |
2611 | struct netdev_queue_stats stats; | |
2612 | ||
1ac788f6 BP |
2613 | if (!netdev_get_queue_stats(port->netdev, queue_id, &stats)) { |
2614 | put_queue_stats(cbdata, queue_id, &stats); | |
2615 | } | |
c1c9c9c4 BP |
2616 | } |
2617 | } | |
2618 | ||
90bf1e07 | 2619 | static enum ofperr |
63f2140a BP |
2620 | handle_queue_stats_request(struct ofconn *ofconn, |
2621 | const struct ofp_queue_stats_request *qsr) | |
c1c9c9c4 | 2622 | { |
64ff1d96 | 2623 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
c1c9c9c4 BP |
2624 | struct queue_stats_cbdata cbdata; |
2625 | struct ofport *port; | |
2626 | unsigned int port_no; | |
2627 | uint32_t queue_id; | |
2628 | ||
c1c9c9c4 BP |
2629 | COVERAGE_INC(ofproto_queue_req); |
2630 | ||
63f2140a | 2631 | ofputil_start_stats_reply(&qsr->osm, &cbdata.replies); |
c1c9c9c4 BP |
2632 | |
2633 | port_no = ntohs(qsr->port_no); | |
2634 | queue_id = ntohl(qsr->queue_id); | |
2635 | if (port_no == OFPP_ALL) { | |
4e8e4213 | 2636 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
ca0f572c | 2637 | handle_queue_stats_for_port(port, queue_id, &cbdata); |
c1c9c9c4 | 2638 | } |
abe529af BP |
2639 | } else if (port_no < OFPP_MAX) { |
2640 | port = ofproto_get_port(ofproto, port_no); | |
c1c9c9c4 | 2641 | if (port) { |
ca0f572c | 2642 | handle_queue_stats_for_port(port, queue_id, &cbdata); |
c1c9c9c4 BP |
2643 | } |
2644 | } else { | |
63f2140a | 2645 | ofpbuf_list_delete(&cbdata.replies); |
90bf1e07 | 2646 | return OFPERR_OFPQOFC_BAD_PORT; |
c1c9c9c4 | 2647 | } |
63f2140a | 2648 | ofconn_send_replies(ofconn, &cbdata.replies); |
c1c9c9c4 BP |
2649 | |
2650 | return 0; | |
2651 | } | |
7ee20df1 BP |
2652 | |
2653 | static bool | |
2654 | is_flow_deletion_pending(const struct ofproto *ofproto, | |
2655 | const struct cls_rule *cls_rule, | |
2656 | uint8_t table_id) | |
2657 | { | |
2658 | if (!hmap_is_empty(&ofproto->deletions)) { | |
2659 | struct ofoperation *op; | |
2660 | ||
2661 | HMAP_FOR_EACH_WITH_HASH (op, hmap_node, | |
2662 | cls_rule_hash(cls_rule, table_id), | |
2663 | &ofproto->deletions) { | |
2664 | if (cls_rule_equal(cls_rule, &op->rule->cr)) { | |
2665 | return true; | |
2666 | } | |
2667 | } | |
2668 | } | |
2669 | ||
2670 | return false; | |
2671 | } | |
2672 | ||
79eee1eb BP |
2673 | /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT |
2674 | * in which no matching flow already exists in the flow table. | |
2675 | * | |
2676 | * Adds the flow specified by 'ofm', which is followed by 'n_actions' | |
75a75043 | 2677 | * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow |
90bf1e07 BP |
2678 | * error code on failure, or OFPROTO_POSTPONE if the operation cannot be |
2679 | * initiated now but may be retried later. | |
79eee1eb BP |
2680 | * |
2681 | * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id, | |
2682 | * if any. */ | |
90bf1e07 | 2683 | static enum ofperr |
a9a2da38 | 2684 | add_flow(struct ofproto *ofproto, struct ofconn *ofconn, |
1b9d6420 | 2685 | const struct ofputil_flow_mod *fm, const struct ofp_header *request) |
064af421 | 2686 | { |
d0918789 | 2687 | struct oftable *table; |
7ee20df1 BP |
2688 | struct ofopgroup *group; |
2689 | struct rule *victim; | |
064af421 | 2690 | struct rule *rule; |
064af421 BP |
2691 | int error; |
2692 | ||
48266274 BP |
2693 | error = check_table_id(ofproto, fm->table_id); |
2694 | if (error) { | |
2695 | return error; | |
2696 | } | |
2697 | ||
7ee20df1 BP |
2698 | /* Pick table. */ |
2699 | if (fm->table_id == 0xff) { | |
2700 | uint8_t table_id; | |
13521ff5 | 2701 | if (ofproto->ofproto_class->rule_choose_table) { |
7ee20df1 BP |
2702 | error = ofproto->ofproto_class->rule_choose_table(ofproto, &fm->cr, |
2703 | &table_id); | |
2704 | if (error) { | |
2705 | return error; | |
2706 | } | |
2707 | assert(table_id < ofproto->n_tables); | |
2708 | table = &ofproto->tables[table_id]; | |
2709 | } else { | |
2710 | table = &ofproto->tables[0]; | |
2711 | } | |
2712 | } else if (fm->table_id < ofproto->n_tables) { | |
2713 | table = &ofproto->tables[fm->table_id]; | |
2714 | } else { | |
90bf1e07 | 2715 | return OFPERR_NXFMFC_BAD_TABLE_ID; |
064af421 BP |
2716 | } |
2717 | ||
5c67e4af BP |
2718 | if (table->flags & OFTABLE_READONLY) { |
2719 | return OFPERR_OFPBRC_EPERM; | |
2720 | } | |
2721 | ||
63adcc7d BP |
2722 | /* Check for overlap, if requested. */ |
2723 | if (fm->flags & OFPFF_CHECK_OVERLAP | |
d0918789 | 2724 | && classifier_rule_overlaps(&table->cls, &fm->cr)) { |
90bf1e07 | 2725 | return OFPERR_OFPFMFC_OVERLAP; |
63adcc7d BP |
2726 | } |
2727 | ||
7ee20df1 BP |
2728 | /* Serialize against pending deletion. */ |
2729 | if (is_flow_deletion_pending(ofproto, &fm->cr, table - ofproto->tables)) { | |
2730 | return OFPROTO_POSTPONE; | |
afe75089 | 2731 | } |
064af421 | 2732 | |
7ee20df1 BP |
2733 | /* Allocate new rule. */ |
2734 | rule = ofproto->ofproto_class->rule_alloc(); | |
2735 | if (!rule) { | |
2736 | VLOG_WARN_RL(&rl, "%s: failed to create rule (%s)", | |
2737 | ofproto->name, strerror(error)); | |
2738 | return ENOMEM; | |
2739 | } | |
2740 | rule->ofproto = ofproto; | |
2741 | rule->cr = fm->cr; | |
2742 | rule->pending = NULL; | |
2743 | rule->flow_cookie = fm->cookie; | |
1745cd08 | 2744 | rule->created = rule->modified = rule->used = time_msec(); |
7ee20df1 BP |
2745 | rule->idle_timeout = fm->idle_timeout; |
2746 | rule->hard_timeout = fm->hard_timeout; | |
2747 | rule->table_id = table - ofproto->tables; | |
2748 | rule->send_flow_removed = (fm->flags & OFPFF_SEND_FLOW_REM) != 0; | |
2749 | rule->actions = ofputil_actions_clone(fm->actions, fm->n_actions); | |
2750 | rule->n_actions = fm->n_actions; | |
254750ce BP |
2751 | rule->evictable = true; |
2752 | rule->eviction_group = NULL; | |
7ee20df1 BP |
2753 | |
2754 | /* Insert new rule. */ | |
d0918789 | 2755 | victim = oftable_replace_rule(rule); |
5c67e4af BP |
2756 | if (victim && !rule_is_modifiable(victim)) { |
2757 | error = OFPERR_OFPBRC_EPERM; | |
2758 | } else if (victim && victim->pending) { | |
7ee20df1 BP |
2759 | error = OFPROTO_POSTPONE; |
2760 | } else { | |
254750ce BP |
2761 | struct rule *evict; |
2762 | ||
2763 | if (classifier_count(&table->cls) > table->max_flows) { | |
2764 | bool was_evictable; | |
2765 | ||
2766 | was_evictable = rule->evictable; | |
2767 | rule->evictable = false; | |
2768 | evict = choose_rule_to_evict(table); | |
2769 | rule->evictable = was_evictable; | |
2770 | ||
2771 | if (!evict) { | |
2772 | error = OFPERR_OFPFMFC_ALL_TABLES_FULL; | |
2773 | goto exit; | |
2774 | } else if (evict->pending) { | |
2775 | error = OFPROTO_POSTPONE; | |
2776 | goto exit; | |
2777 | } | |
2778 | } else { | |
2779 | evict = NULL; | |
2780 | } | |
2781 | ||
7024dffe | 2782 | group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id); |
7ee20df1 BP |
2783 | ofoperation_create(group, rule, OFOPERATION_ADD); |
2784 | rule->pending->victim = victim; | |
2785 | ||
2786 | error = ofproto->ofproto_class->rule_construct(rule); | |
2787 | if (error) { | |
2788 | ofoperation_destroy(rule->pending); | |
254750ce BP |
2789 | } else if (evict) { |
2790 | delete_flow__(evict, group); | |
7ee20df1 BP |
2791 | } |
2792 | ofopgroup_submit(group); | |
064af421 | 2793 | } |
79eee1eb | 2794 | |
254750ce | 2795 | exit: |
7ee20df1 | 2796 | /* Back out if an error occurred. */ |
79eee1eb | 2797 | if (error) { |
d0918789 | 2798 | oftable_substitute_rule(rule, victim); |
7ee20df1 | 2799 | ofproto_rule_destroy__(rule); |
79eee1eb | 2800 | } |
7ee20df1 | 2801 | return error; |
064af421 | 2802 | } |
79eee1eb BP |
2803 | \f |
2804 | /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */ | |
064af421 | 2805 | |
9ed18e46 BP |
2806 | /* Modifies the rules listed in 'rules', changing their actions to match those |
2807 | * in 'fm'. | |
79eee1eb | 2808 | * |
9ed18e46 BP |
2809 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, |
2810 | * if any. | |
2811 | * | |
2812 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 2813 | static enum ofperr |
7024dffe BP |
2814 | modify_flows__(struct ofproto *ofproto, struct ofconn *ofconn, |
2815 | const struct ofputil_flow_mod *fm, | |
7ee20df1 | 2816 | const struct ofp_header *request, struct list *rules) |
79eee1eb | 2817 | { |
7ee20df1 | 2818 | struct ofopgroup *group; |
9ed18e46 | 2819 | struct rule *rule; |
5c67e4af | 2820 | enum ofperr error; |
79eee1eb | 2821 | |
7024dffe | 2822 | group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id); |
5c67e4af | 2823 | error = OFPERR_OFPBRC_EPERM; |
9ed18e46 | 2824 | LIST_FOR_EACH (rule, ofproto_node, rules) { |
5c67e4af BP |
2825 | if (rule_is_modifiable(rule)) { |
2826 | /* At least one rule is modifiable, don't report EPERM error. */ | |
2827 | error = 0; | |
2828 | } else { | |
2829 | continue; | |
2830 | } | |
2831 | ||
9ed18e46 BP |
2832 | if (!ofputil_actions_equal(fm->actions, fm->n_actions, |
2833 | rule->actions, rule->n_actions)) { | |
7ee20df1 BP |
2834 | ofoperation_create(group, rule, OFOPERATION_MODIFY); |
2835 | rule->pending->actions = rule->actions; | |
2836 | rule->pending->n_actions = rule->n_actions; | |
2837 | rule->actions = ofputil_actions_clone(fm->actions, fm->n_actions); | |
2838 | rule->n_actions = fm->n_actions; | |
254750ce | 2839 | ofproto->ofproto_class->rule_modify_actions(rule); |
308881af BP |
2840 | } else { |
2841 | rule->modified = time_msec(); | |
5ecc9d81 | 2842 | } |
9ed18e46 | 2843 | rule->flow_cookie = fm->cookie; |
5ecc9d81 | 2844 | } |
7ee20df1 | 2845 | ofopgroup_submit(group); |
79eee1eb | 2846 | |
5c67e4af | 2847 | return error; |
9ed18e46 BP |
2848 | } |
2849 | ||
90bf1e07 BP |
2850 | /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on |
2851 | * failure. | |
9ed18e46 BP |
2852 | * |
2853 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, | |
2854 | * if any. */ | |
90bf1e07 | 2855 | static enum ofperr |
7024dffe | 2856 | modify_flows_loose(struct ofproto *ofproto, struct ofconn *ofconn, |
1b9d6420 | 2857 | const struct ofputil_flow_mod *fm, |
7ee20df1 | 2858 | const struct ofp_header *request) |
9ed18e46 | 2859 | { |
9ed18e46 BP |
2860 | struct list rules; |
2861 | int error; | |
2862 | ||
e729e793 JP |
2863 | error = collect_rules_loose(ofproto, fm->table_id, &fm->cr, |
2864 | fm->cookie, fm->cookie_mask, | |
2865 | OFPP_NONE, &rules); | |
9ed18e46 | 2866 | return (error ? error |
7024dffe BP |
2867 | : list_is_empty(&rules) ? add_flow(ofproto, ofconn, fm, request) |
2868 | : modify_flows__(ofproto, ofconn, fm, request, &rules)); | |
79eee1eb BP |
2869 | } |
2870 | ||
2871 | /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error | |
90bf1e07 | 2872 | * code on failure. |
79eee1eb | 2873 | * |
9ed18e46 | 2874 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, |
79eee1eb | 2875 | * if any. */ |
90bf1e07 | 2876 | static enum ofperr |
7024dffe | 2877 | modify_flow_strict(struct ofproto *ofproto, struct ofconn *ofconn, |
1b9d6420 | 2878 | const struct ofputil_flow_mod *fm, |
7ee20df1 | 2879 | const struct ofp_header *request) |
79eee1eb | 2880 | { |
9ed18e46 | 2881 | struct list rules; |
6c1491fb BP |
2882 | int error; |
2883 | ||
e729e793 JP |
2884 | error = collect_rules_strict(ofproto, fm->table_id, &fm->cr, |
2885 | fm->cookie, fm->cookie_mask, | |
2886 | OFPP_NONE, &rules); | |
9ed18e46 | 2887 | return (error ? error |
7024dffe BP |
2888 | : list_is_empty(&rules) ? add_flow(ofproto, ofconn, fm, request) |
2889 | : list_is_singleton(&rules) ? modify_flows__(ofproto, ofconn, | |
2890 | fm, request, &rules) | |
9ed18e46 | 2891 | : 0); |
79eee1eb | 2892 | } |
9ed18e46 BP |
2893 | \f |
2894 | /* OFPFC_DELETE implementation. */ | |
79eee1eb | 2895 | |
254750ce BP |
2896 | static void |
2897 | delete_flow__(struct rule *rule, struct ofopgroup *group) | |
2898 | { | |
2899 | struct ofproto *ofproto = rule->ofproto; | |
2900 | ||
2901 | ofproto_rule_send_removed(rule, OFPRR_DELETE); | |
2902 | ||
2903 | ofoperation_create(group, rule, OFOPERATION_DELETE); | |
2904 | oftable_remove_rule(rule); | |
2905 | ofproto->ofproto_class->rule_destruct(rule); | |
2906 | } | |
2907 | ||
9ed18e46 BP |
2908 | /* Deletes the rules listed in 'rules'. |
2909 | * | |
2910 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 2911 | static enum ofperr |
7024dffe BP |
2912 | delete_flows__(struct ofproto *ofproto, struct ofconn *ofconn, |
2913 | const struct ofp_header *request, struct list *rules) | |
064af421 | 2914 | { |
9ed18e46 | 2915 | struct rule *rule, *next; |
7ee20df1 | 2916 | struct ofopgroup *group; |
79eee1eb | 2917 | |
7024dffe | 2918 | group = ofopgroup_create(ofproto, ofconn, request, UINT32_MAX); |
9ed18e46 | 2919 | LIST_FOR_EACH_SAFE (rule, next, ofproto_node, rules) { |
254750ce | 2920 | delete_flow__(rule, group); |
79eee1eb | 2921 | } |
7ee20df1 | 2922 | ofopgroup_submit(group); |
79eee1eb | 2923 | |
9ed18e46 | 2924 | return 0; |
79eee1eb | 2925 | } |
79eee1eb BP |
2926 | |
2927 | /* Implements OFPFC_DELETE. */ | |
90bf1e07 | 2928 | static enum ofperr |
7024dffe BP |
2929 | delete_flows_loose(struct ofproto *ofproto, struct ofconn *ofconn, |
2930 | const struct ofputil_flow_mod *fm, | |
7ee20df1 | 2931 | const struct ofp_header *request) |
79eee1eb | 2932 | { |
9ed18e46 | 2933 | struct list rules; |
90bf1e07 | 2934 | enum ofperr error; |
064af421 | 2935 | |
e729e793 JP |
2936 | error = collect_rules_loose(ofproto, fm->table_id, &fm->cr, |
2937 | fm->cookie, fm->cookie_mask, | |
2938 | fm->out_port, &rules); | |
9ed18e46 | 2939 | return (error ? error |
7024dffe BP |
2940 | : !list_is_empty(&rules) ? delete_flows__(ofproto, ofconn, request, |
2941 | &rules) | |
9ed18e46 | 2942 | : 0); |
064af421 BP |
2943 | } |
2944 | ||
79eee1eb | 2945 | /* Implements OFPFC_DELETE_STRICT. */ |
90bf1e07 | 2946 | static enum ofperr |
7024dffe | 2947 | delete_flow_strict(struct ofproto *ofproto, struct ofconn *ofconn, |
1b9d6420 | 2948 | const struct ofputil_flow_mod *fm, |
7ee20df1 | 2949 | const struct ofp_header *request) |
79eee1eb | 2950 | { |
9ed18e46 | 2951 | struct list rules; |
90bf1e07 | 2952 | enum ofperr error; |
79eee1eb | 2953 | |
e729e793 JP |
2954 | error = collect_rules_strict(ofproto, fm->table_id, &fm->cr, |
2955 | fm->cookie, fm->cookie_mask, | |
2956 | fm->out_port, &rules); | |
9ed18e46 | 2957 | return (error ? error |
7024dffe BP |
2958 | : list_is_singleton(&rules) ? delete_flows__(ofproto, ofconn, |
2959 | request, &rules) | |
9ed18e46 | 2960 | : 0); |
abe529af BP |
2961 | } |
2962 | ||
2963 | static void | |
2964 | ofproto_rule_send_removed(struct rule *rule, uint8_t reason) | |
2965 | { | |
2966 | struct ofputil_flow_removed fr; | |
2967 | ||
2968 | if (rule_is_hidden(rule) || !rule->send_flow_removed) { | |
2969 | return; | |
2970 | } | |
2971 | ||
2972 | fr.rule = rule->cr; | |
2973 | fr.cookie = rule->flow_cookie; | |
2974 | fr.reason = reason; | |
f27f2134 BP |
2975 | calc_flow_duration__(rule->created, time_msec(), |
2976 | &fr.duration_sec, &fr.duration_nsec); | |
abe529af BP |
2977 | fr.idle_timeout = rule->idle_timeout; |
2978 | rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count, | |
2979 | &fr.byte_count); | |
2980 | ||
2981 | connmgr_send_flow_removed(rule->ofproto->connmgr, &fr); | |
2982 | } | |
2983 | ||
1745cd08 BP |
2984 | void |
2985 | ofproto_rule_update_used(struct rule *rule, long long int used) | |
2986 | { | |
2987 | if (used > rule->used) { | |
254750ce BP |
2988 | struct eviction_group *evg = rule->eviction_group; |
2989 | ||
1745cd08 | 2990 | rule->used = used; |
254750ce BP |
2991 | if (evg) { |
2992 | heap_change(&evg->rules, &rule->evg_node, | |
2993 | rule_eviction_priority(rule)); | |
2994 | } | |
1745cd08 BP |
2995 | } |
2996 | } | |
2997 | ||
abe529af BP |
2998 | /* Sends an OpenFlow "flow removed" message with the given 'reason' (either |
2999 | * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its | |
3000 | * ofproto. | |
3001 | * | |
3002 | * ofproto implementation ->run() functions should use this function to expire | |
3003 | * OpenFlow flows. */ | |
3004 | void | |
3005 | ofproto_rule_expire(struct rule *rule, uint8_t reason) | |
3006 | { | |
7ee20df1 BP |
3007 | struct ofproto *ofproto = rule->ofproto; |
3008 | struct ofopgroup *group; | |
3009 | ||
abe529af | 3010 | assert(reason == OFPRR_HARD_TIMEOUT || reason == OFPRR_IDLE_TIMEOUT); |
7ee20df1 | 3011 | |
abe529af | 3012 | ofproto_rule_send_removed(rule, reason); |
7ee20df1 | 3013 | |
7024dffe | 3014 | group = ofopgroup_create_unattached(ofproto); |
7ee20df1 | 3015 | ofoperation_create(group, rule, OFOPERATION_DELETE); |
d0918789 | 3016 | oftable_remove_rule(rule); |
254750ce | 3017 | ofproto->ofproto_class->rule_destruct(rule); |
7ee20df1 | 3018 | ofopgroup_submit(group); |
79eee1eb BP |
3019 | } |
3020 | \f | |
90bf1e07 | 3021 | static enum ofperr |
2e4f5fcf | 3022 | handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3023 | { |
a9a2da38 | 3024 | struct ofputil_flow_mod fm; |
90bf1e07 | 3025 | enum ofperr error; |
064af421 | 3026 | |
76589937 | 3027 | error = reject_slave_controller(ofconn); |
9deba63b BP |
3028 | if (error) { |
3029 | return error; | |
3030 | } | |
3052b0c5 | 3031 | |
27527aa0 | 3032 | error = ofputil_decode_flow_mod(&fm, oh, ofconn_get_protocol(ofconn)); |
064af421 BP |
3033 | if (error) { |
3034 | return error; | |
3035 | } | |
3036 | ||
2e4f5fcf BP |
3037 | /* We do not support the emergency flow cache. It will hopefully get |
3038 | * dropped from OpenFlow in the near future. */ | |
3039 | if (fm.flags & OFPFF_EMERG) { | |
49bdc010 JP |
3040 | /* There isn't a good fit for an error code, so just state that the |
3041 | * flow table is full. */ | |
90bf1e07 | 3042 | return OFPERR_OFPFMFC_ALL_TABLES_FULL; |
49bdc010 JP |
3043 | } |
3044 | ||
75a75043 BP |
3045 | return handle_flow_mod__(ofconn_get_ofproto(ofconn), ofconn, &fm, oh); |
3046 | } | |
3047 | ||
90bf1e07 | 3048 | static enum ofperr |
75a75043 BP |
3049 | handle_flow_mod__(struct ofproto *ofproto, struct ofconn *ofconn, |
3050 | const struct ofputil_flow_mod *fm, | |
3051 | const struct ofp_header *oh) | |
3052 | { | |
3053 | if (ofproto->n_pending >= 50) { | |
3054 | assert(!list_is_empty(&ofproto->pending)); | |
3055 | return OFPROTO_POSTPONE; | |
3056 | } | |
3057 | ||
3058 | switch (fm->command) { | |
3052b0c5 | 3059 | case OFPFC_ADD: |
75a75043 | 3060 | return add_flow(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3061 | |
3062 | case OFPFC_MODIFY: | |
75a75043 | 3063 | return modify_flows_loose(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3064 | |
3065 | case OFPFC_MODIFY_STRICT: | |
75a75043 | 3066 | return modify_flow_strict(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3067 | |
3068 | case OFPFC_DELETE: | |
75a75043 | 3069 | return delete_flows_loose(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3070 | |
3071 | case OFPFC_DELETE_STRICT: | |
75a75043 | 3072 | return delete_flow_strict(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3073 | |
3074 | default: | |
75a75043 | 3075 | if (fm->command > 0xff) { |
6c1491fb BP |
3076 | VLOG_WARN_RL(&rl, "flow_mod has explicit table_id but " |
3077 | "flow_mod_table_id extension is not enabled"); | |
3078 | } | |
90bf1e07 | 3079 | return OFPERR_OFPFMFC_BAD_COMMAND; |
3052b0c5 BP |
3080 | } |
3081 | } | |
3082 | ||
90bf1e07 | 3083 | static enum ofperr |
d1e2cf21 | 3084 | handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh) |
9deba63b | 3085 | { |
d1e2cf21 | 3086 | struct nx_role_request *nrr = (struct nx_role_request *) oh; |
9deba63b BP |
3087 | struct nx_role_request *reply; |
3088 | struct ofpbuf *buf; | |
3089 | uint32_t role; | |
3090 | ||
9deba63b BP |
3091 | role = ntohl(nrr->role); |
3092 | if (role != NX_ROLE_OTHER && role != NX_ROLE_MASTER | |
3093 | && role != NX_ROLE_SLAVE) { | |
2e0525bc | 3094 | return OFPERR_OFPRRFC_BAD_ROLE; |
9deba63b BP |
3095 | } |
3096 | ||
7ee20df1 BP |
3097 | if (ofconn_get_role(ofconn) != role |
3098 | && ofconn_has_pending_opgroups(ofconn)) { | |
3099 | return OFPROTO_POSTPONE; | |
3100 | } | |
3101 | ||
1ce0a5fa | 3102 | ofconn_set_role(ofconn, role); |
9deba63b | 3103 | |
d1e2cf21 | 3104 | reply = make_nxmsg_xid(sizeof *reply, NXT_ROLE_REPLY, oh->xid, &buf); |
9deba63b | 3105 | reply->role = htonl(role); |
b0421aa2 | 3106 | ofconn_send_reply(ofconn, buf); |
9deba63b BP |
3107 | |
3108 | return 0; | |
3109 | } | |
3110 | ||
90bf1e07 | 3111 | static enum ofperr |
6c1491fb BP |
3112 | handle_nxt_flow_mod_table_id(struct ofconn *ofconn, |
3113 | const struct ofp_header *oh) | |
3114 | { | |
73dbf4ab BP |
3115 | const struct nx_flow_mod_table_id *msg |
3116 | = (const struct nx_flow_mod_table_id *) oh; | |
27527aa0 BP |
3117 | enum ofputil_protocol cur, next; |
3118 | ||
3119 | cur = ofconn_get_protocol(ofconn); | |
3120 | next = ofputil_protocol_set_tid(cur, msg->set != 0); | |
3121 | ofconn_set_protocol(ofconn, next); | |
6c1491fb | 3122 | |
6c1491fb BP |
3123 | return 0; |
3124 | } | |
3125 | ||
90bf1e07 | 3126 | static enum ofperr |
d1e2cf21 | 3127 | handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh) |
09246b99 | 3128 | { |
73dbf4ab BP |
3129 | const struct nx_set_flow_format *msg |
3130 | = (const struct nx_set_flow_format *) oh; | |
27527aa0 BP |
3131 | enum ofputil_protocol cur, next; |
3132 | enum ofputil_protocol next_base; | |
09246b99 | 3133 | |
27527aa0 BP |
3134 | next_base = ofputil_nx_flow_format_to_protocol(ntohl(msg->format)); |
3135 | if (!next_base) { | |
90bf1e07 | 3136 | return OFPERR_OFPBRC_EPERM; |
09246b99 | 3137 | } |
7ee20df1 | 3138 | |
27527aa0 BP |
3139 | cur = ofconn_get_protocol(ofconn); |
3140 | next = ofputil_protocol_set_base(cur, next_base); | |
3141 | if (cur != next && ofconn_has_pending_opgroups(ofconn)) { | |
3142 | /* Avoid sending async messages in surprising protocol. */ | |
7ee20df1 BP |
3143 | return OFPROTO_POSTPONE; |
3144 | } | |
3145 | ||
27527aa0 | 3146 | ofconn_set_protocol(ofconn, next); |
7ee20df1 | 3147 | return 0; |
09246b99 BP |
3148 | } |
3149 | ||
90bf1e07 | 3150 | static enum ofperr |
54834960 EJ |
3151 | handle_nxt_set_packet_in_format(struct ofconn *ofconn, |
3152 | const struct ofp_header *oh) | |
3153 | { | |
73dbf4ab | 3154 | const struct nx_set_packet_in_format *msg; |
54834960 EJ |
3155 | uint32_t format; |
3156 | ||
73dbf4ab | 3157 | msg = (const struct nx_set_packet_in_format *) oh; |
54834960 | 3158 | format = ntohl(msg->format); |
a15f0eeb | 3159 | if (format != NXPIF_OPENFLOW10 && format != NXPIF_NXM) { |
90bf1e07 | 3160 | return OFPERR_OFPBRC_EPERM; |
54834960 EJ |
3161 | } |
3162 | ||
3163 | if (format != ofconn_get_packet_in_format(ofconn) | |
3164 | && ofconn_has_pending_opgroups(ofconn)) { | |
3165 | /* Avoid sending async message in surprsing packet in format. */ | |
3166 | return OFPROTO_POSTPONE; | |
3167 | } | |
3168 | ||
3169 | ofconn_set_packet_in_format(ofconn, format); | |
3170 | return 0; | |
3171 | } | |
3172 | ||
80d5aefd BP |
3173 | static enum ofperr |
3174 | handle_nxt_set_async_config(struct ofconn *ofconn, const struct ofp_header *oh) | |
3175 | { | |
3176 | const struct nx_async_config *msg = (const struct nx_async_config *) oh; | |
3177 | uint32_t master[OAM_N_TYPES]; | |
3178 | uint32_t slave[OAM_N_TYPES]; | |
3179 | ||
3180 | master[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[0]); | |
3181 | master[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[0]); | |
3182 | master[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[0]); | |
3183 | ||
3184 | slave[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[1]); | |
3185 | slave[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[1]); | |
3186 | slave[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[1]); | |
3187 | ||
3188 | ofconn_set_async_config(ofconn, master, slave); | |
3189 | ||
3190 | return 0; | |
3191 | } | |
3192 | ||
a7349929 BP |
3193 | static enum ofperr |
3194 | handle_nxt_set_controller_id(struct ofconn *ofconn, | |
3195 | const struct ofp_header *oh) | |
3196 | { | |
3197 | const struct nx_controller_id *nci; | |
3198 | ||
3199 | nci = (const struct nx_controller_id *) oh; | |
3200 | if (!is_all_zeros(nci->zero, sizeof nci->zero)) { | |
3201 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
3202 | } | |
3203 | ||
3204 | ofconn_set_controller_id(ofconn, ntohs(nci->controller_id)); | |
3205 | return 0; | |
3206 | } | |
3207 | ||
90bf1e07 | 3208 | static enum ofperr |
d1e2cf21 | 3209 | handle_barrier_request(struct ofconn *ofconn, const struct ofp_header *oh) |
246e61ea JP |
3210 | { |
3211 | struct ofp_header *ob; | |
3212 | struct ofpbuf *buf; | |
3213 | ||
7ee20df1 BP |
3214 | if (ofconn_has_pending_opgroups(ofconn)) { |
3215 | return OFPROTO_POSTPONE; | |
3216 | } | |
3217 | ||
5293a2e1 | 3218 | ob = make_openflow_xid(sizeof *ob, OFPT10_BARRIER_REPLY, oh->xid, &buf); |
b0421aa2 | 3219 | ofconn_send_reply(ofconn, buf); |
246e61ea JP |
3220 | return 0; |
3221 | } | |
3222 | ||
90bf1e07 | 3223 | static enum ofperr |
d1e2cf21 | 3224 | handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg) |
064af421 | 3225 | { |
d1e2cf21 BP |
3226 | const struct ofp_header *oh = msg->data; |
3227 | const struct ofputil_msg_type *type; | |
90bf1e07 | 3228 | enum ofperr error; |
064af421 | 3229 | |
d1e2cf21 BP |
3230 | error = ofputil_decode_msg_type(oh, &type); |
3231 | if (error) { | |
3232 | return error; | |
3233 | } | |
064af421 | 3234 | |
d1e2cf21 BP |
3235 | switch (ofputil_msg_type_code(type)) { |
3236 | /* OpenFlow requests. */ | |
3237 | case OFPUTIL_OFPT_ECHO_REQUEST: | |
3238 | return handle_echo_request(ofconn, oh); | |
064af421 | 3239 | |
d1e2cf21 BP |
3240 | case OFPUTIL_OFPT_FEATURES_REQUEST: |
3241 | return handle_features_request(ofconn, oh); | |
064af421 | 3242 | |
d1e2cf21 BP |
3243 | case OFPUTIL_OFPT_GET_CONFIG_REQUEST: |
3244 | return handle_get_config_request(ofconn, oh); | |
064af421 | 3245 | |
d1e2cf21 BP |
3246 | case OFPUTIL_OFPT_SET_CONFIG: |
3247 | return handle_set_config(ofconn, msg->data); | |
064af421 | 3248 | |
d1e2cf21 | 3249 | case OFPUTIL_OFPT_PACKET_OUT: |
c6a93eb7 | 3250 | return handle_packet_out(ofconn, msg->data); |
064af421 | 3251 | |
d1e2cf21 BP |
3252 | case OFPUTIL_OFPT_PORT_MOD: |
3253 | return handle_port_mod(ofconn, oh); | |
064af421 | 3254 | |
d1e2cf21 | 3255 | case OFPUTIL_OFPT_FLOW_MOD: |
2e4f5fcf | 3256 | return handle_flow_mod(ofconn, oh); |
064af421 | 3257 | |
d1e2cf21 BP |
3258 | case OFPUTIL_OFPT_BARRIER_REQUEST: |
3259 | return handle_barrier_request(ofconn, oh); | |
064af421 | 3260 | |
d1e2cf21 BP |
3261 | /* OpenFlow replies. */ |
3262 | case OFPUTIL_OFPT_ECHO_REPLY: | |
3263 | return 0; | |
246e61ea | 3264 | |
d1e2cf21 | 3265 | /* Nicira extension requests. */ |
d1e2cf21 BP |
3266 | case OFPUTIL_NXT_ROLE_REQUEST: |
3267 | return handle_role_request(ofconn, oh); | |
3268 | ||
6c1491fb BP |
3269 | case OFPUTIL_NXT_FLOW_MOD_TABLE_ID: |
3270 | return handle_nxt_flow_mod_table_id(ofconn, oh); | |
d1e2cf21 BP |
3271 | |
3272 | case OFPUTIL_NXT_SET_FLOW_FORMAT: | |
3273 | return handle_nxt_set_flow_format(ofconn, oh); | |
3274 | ||
54834960 EJ |
3275 | case OFPUTIL_NXT_SET_PACKET_IN_FORMAT: |
3276 | return handle_nxt_set_packet_in_format(ofconn, oh); | |
3277 | ||
a7349929 BP |
3278 | case OFPUTIL_NXT_SET_CONTROLLER_ID: |
3279 | return handle_nxt_set_controller_id(ofconn, oh); | |
3280 | ||
d1e2cf21 | 3281 | case OFPUTIL_NXT_FLOW_MOD: |
2e4f5fcf | 3282 | return handle_flow_mod(ofconn, oh); |
d1e2cf21 | 3283 | |
f27f2134 BP |
3284 | case OFPUTIL_NXT_FLOW_AGE: |
3285 | /* Nothing to do. */ | |
3286 | return 0; | |
3287 | ||
80d5aefd BP |
3288 | case OFPUTIL_NXT_SET_ASYNC_CONFIG: |
3289 | return handle_nxt_set_async_config(ofconn, oh); | |
3290 | ||
349adfb2 | 3291 | /* Statistics requests. */ |
d1e2cf21 | 3292 | case OFPUTIL_OFPST_DESC_REQUEST: |
63f2140a | 3293 | return handle_desc_stats_request(ofconn, msg->data); |
d1e2cf21 BP |
3294 | |
3295 | case OFPUTIL_OFPST_FLOW_REQUEST: | |
349adfb2 | 3296 | case OFPUTIL_NXST_FLOW_REQUEST: |
63f2140a | 3297 | return handle_flow_stats_request(ofconn, msg->data); |
d1e2cf21 BP |
3298 | |
3299 | case OFPUTIL_OFPST_AGGREGATE_REQUEST: | |
76c93b22 | 3300 | case OFPUTIL_NXST_AGGREGATE_REQUEST: |
63f2140a | 3301 | return handle_aggregate_stats_request(ofconn, msg->data); |
d1e2cf21 BP |
3302 | |
3303 | case OFPUTIL_OFPST_TABLE_REQUEST: | |
63f2140a | 3304 | return handle_table_stats_request(ofconn, msg->data); |
d1e2cf21 BP |
3305 | |
3306 | case OFPUTIL_OFPST_PORT_REQUEST: | |
63f2140a | 3307 | return handle_port_stats_request(ofconn, msg->data); |
d1e2cf21 BP |
3308 | |
3309 | case OFPUTIL_OFPST_QUEUE_REQUEST: | |
63f2140a | 3310 | return handle_queue_stats_request(ofconn, msg->data); |
d1e2cf21 | 3311 | |
8f93e93c | 3312 | case OFPUTIL_MSG_INVALID: |
d1e2cf21 BP |
3313 | case OFPUTIL_OFPT_HELLO: |
3314 | case OFPUTIL_OFPT_ERROR: | |
3315 | case OFPUTIL_OFPT_FEATURES_REPLY: | |
3316 | case OFPUTIL_OFPT_GET_CONFIG_REPLY: | |
3317 | case OFPUTIL_OFPT_PACKET_IN: | |
3318 | case OFPUTIL_OFPT_FLOW_REMOVED: | |
3319 | case OFPUTIL_OFPT_PORT_STATUS: | |
3320 | case OFPUTIL_OFPT_BARRIER_REPLY: | |
3321 | case OFPUTIL_OFPT_QUEUE_GET_CONFIG_REQUEST: | |
3322 | case OFPUTIL_OFPT_QUEUE_GET_CONFIG_REPLY: | |
3323 | case OFPUTIL_OFPST_DESC_REPLY: | |
3324 | case OFPUTIL_OFPST_FLOW_REPLY: | |
3325 | case OFPUTIL_OFPST_QUEUE_REPLY: | |
3326 | case OFPUTIL_OFPST_PORT_REPLY: | |
3327 | case OFPUTIL_OFPST_TABLE_REPLY: | |
3328 | case OFPUTIL_OFPST_AGGREGATE_REPLY: | |
d1e2cf21 BP |
3329 | case OFPUTIL_NXT_ROLE_REPLY: |
3330 | case OFPUTIL_NXT_FLOW_REMOVED: | |
54834960 | 3331 | case OFPUTIL_NXT_PACKET_IN: |
d1e2cf21 BP |
3332 | case OFPUTIL_NXST_FLOW_REPLY: |
3333 | case OFPUTIL_NXST_AGGREGATE_REPLY: | |
064af421 | 3334 | default: |
5293a2e1 BP |
3335 | return (oh->type == OFPT10_STATS_REQUEST || |
3336 | oh->type == OFPT10_STATS_REPLY | |
3337 | ? OFPERR_OFPBRC_BAD_STAT | |
3338 | : OFPERR_OFPBRC_BAD_TYPE); | |
064af421 | 3339 | } |
d1e2cf21 | 3340 | } |
064af421 | 3341 | |
7ee20df1 | 3342 | static bool |
d1e2cf21 BP |
3343 | handle_openflow(struct ofconn *ofconn, struct ofpbuf *ofp_msg) |
3344 | { | |
3345 | int error = handle_openflow__(ofconn, ofp_msg); | |
7ee20df1 | 3346 | if (error && error != OFPROTO_POSTPONE) { |
1be5ff75 | 3347 | ofconn_send_error(ofconn, ofp_msg->data, error); |
064af421 | 3348 | } |
d1e2cf21 | 3349 | COVERAGE_INC(ofproto_recv_openflow); |
7ee20df1 BP |
3350 | return error != OFPROTO_POSTPONE; |
3351 | } | |
3352 | \f | |
3353 | /* Asynchronous operations. */ | |
3354 | ||
3355 | /* Creates and returns a new ofopgroup that is not associated with any | |
3356 | * OpenFlow connection. | |
3357 | * | |
3358 | * The caller should add operations to the returned group with | |
3359 | * ofoperation_create() and then submit it with ofopgroup_submit(). */ | |
3360 | static struct ofopgroup * | |
7024dffe | 3361 | ofopgroup_create_unattached(struct ofproto *ofproto) |
7ee20df1 BP |
3362 | { |
3363 | struct ofopgroup *group = xzalloc(sizeof *group); | |
3364 | group->ofproto = ofproto; | |
3365 | list_init(&group->ofproto_node); | |
3366 | list_init(&group->ops); | |
3367 | list_init(&group->ofconn_node); | |
3368 | return group; | |
3369 | } | |
3370 | ||
7024dffe BP |
3371 | /* Creates and returns a new ofopgroup for 'ofproto'. |
3372 | * | |
3373 | * If 'ofconn' is NULL, the new ofopgroup is not associated with any OpenFlow | |
3374 | * connection. The 'request' and 'buffer_id' arguments are ignored. | |
3375 | * | |
3376 | * If 'ofconn' is nonnull, then the new ofopgroup is associated with 'ofconn'. | |
3377 | * If the ofopgroup eventually fails, then the error reply will include | |
3378 | * 'request'. If the ofopgroup eventually succeeds, then the packet with | |
3379 | * buffer id 'buffer_id' on 'ofconn' will be sent by 'ofconn''s ofproto. | |
7ee20df1 BP |
3380 | * |
3381 | * The caller should add operations to the returned group with | |
3382 | * ofoperation_create() and then submit it with ofopgroup_submit(). */ | |
3383 | static struct ofopgroup * | |
7024dffe BP |
3384 | ofopgroup_create(struct ofproto *ofproto, struct ofconn *ofconn, |
3385 | const struct ofp_header *request, uint32_t buffer_id) | |
7ee20df1 | 3386 | { |
7024dffe BP |
3387 | struct ofopgroup *group = ofopgroup_create_unattached(ofproto); |
3388 | if (ofconn) { | |
3389 | size_t request_len = ntohs(request->length); | |
7ee20df1 | 3390 | |
7024dffe | 3391 | assert(ofconn_get_ofproto(ofconn) == ofproto); |
7ee20df1 | 3392 | |
7024dffe BP |
3393 | ofconn_add_opgroup(ofconn, &group->ofconn_node); |
3394 | group->ofconn = ofconn; | |
3395 | group->request = xmemdup(request, MIN(request_len, 64)); | |
3396 | group->buffer_id = buffer_id; | |
3397 | } | |
7ee20df1 BP |
3398 | return group; |
3399 | } | |
3400 | ||
3401 | /* Submits 'group' for processing. | |
3402 | * | |
3403 | * If 'group' contains no operations (e.g. none were ever added, or all of the | |
3404 | * ones that were added completed synchronously), then it is destroyed | |
3405 | * immediately. Otherwise it is added to the ofproto's list of pending | |
3406 | * groups. */ | |
3407 | static void | |
3408 | ofopgroup_submit(struct ofopgroup *group) | |
3409 | { | |
3410 | if (list_is_empty(&group->ops)) { | |
3411 | ofopgroup_destroy(group); | |
3412 | } else { | |
3413 | list_push_back(&group->ofproto->pending, &group->ofproto_node); | |
dd5616b3 | 3414 | group->ofproto->n_pending++; |
7ee20df1 BP |
3415 | } |
3416 | } | |
3417 | ||
3418 | static void | |
3419 | ofopgroup_destroy(struct ofopgroup *group) | |
3420 | { | |
3421 | assert(list_is_empty(&group->ops)); | |
3422 | if (!list_is_empty(&group->ofproto_node)) { | |
dd5616b3 BP |
3423 | assert(group->ofproto->n_pending > 0); |
3424 | group->ofproto->n_pending--; | |
7ee20df1 BP |
3425 | list_remove(&group->ofproto_node); |
3426 | } | |
3427 | if (!list_is_empty(&group->ofconn_node)) { | |
3428 | list_remove(&group->ofconn_node); | |
3429 | if (group->error) { | |
3430 | ofconn_send_error(group->ofconn, group->request, group->error); | |
3431 | } | |
3432 | connmgr_retry(group->ofproto->connmgr); | |
3433 | } | |
3434 | free(group->request); | |
3435 | free(group); | |
3436 | } | |
3437 | ||
3438 | /* Initiates a new operation on 'rule', of the specified 'type', within | |
3439 | * 'group'. Prior to calling, 'rule' must not have any pending operation. */ | |
3440 | static void | |
3441 | ofoperation_create(struct ofopgroup *group, struct rule *rule, | |
3442 | enum ofoperation_type type) | |
3443 | { | |
3444 | struct ofoperation *op; | |
3445 | ||
3446 | assert(!rule->pending); | |
3447 | ||
3448 | op = rule->pending = xzalloc(sizeof *op); | |
3449 | op->group = group; | |
3450 | list_push_back(&group->ops, &op->group_node); | |
3451 | op->rule = rule; | |
3452 | op->type = type; | |
3453 | op->status = -1; | |
3454 | op->flow_cookie = rule->flow_cookie; | |
3455 | ||
3456 | if (type == OFOPERATION_DELETE) { | |
3457 | hmap_insert(&op->group->ofproto->deletions, &op->hmap_node, | |
3458 | cls_rule_hash(&rule->cr, rule->table_id)); | |
3459 | } | |
3460 | } | |
3461 | ||
3462 | static void | |
3463 | ofoperation_destroy(struct ofoperation *op) | |
3464 | { | |
3465 | struct ofopgroup *group = op->group; | |
3466 | ||
3467 | if (op->rule) { | |
3468 | op->rule->pending = NULL; | |
3469 | } | |
3470 | if (op->type == OFOPERATION_DELETE) { | |
3471 | hmap_remove(&group->ofproto->deletions, &op->hmap_node); | |
3472 | } | |
3473 | list_remove(&op->group_node); | |
3474 | free(op->actions); | |
3475 | free(op); | |
3476 | ||
3477 | if (list_is_empty(&group->ops) && !list_is_empty(&group->ofproto_node)) { | |
3478 | ofopgroup_destroy(group); | |
3479 | } | |
3480 | } | |
3481 | ||
3482 | /* Indicates that 'op' completed with status 'error', which is either 0 to | |
90bf1e07 | 3483 | * indicate success or an OpenFlow error code on failure. |
7ee20df1 | 3484 | * |
a6a62132 BP |
3485 | * If 'error' is 0, indicating success, the operation will be committed |
3486 | * permanently to the flow table. There is one interesting subcase: | |
3487 | * | |
3488 | * - If 'op' is an "add flow" operation that is replacing an existing rule in | |
3489 | * the flow table (the "victim" rule) by a new one, then the caller must | |
3490 | * have uninitialized any derived state in the victim rule, as in step 5 in | |
3491 | * the "Life Cycle" in ofproto/ofproto-provider.h. ofoperation_complete() | |
3492 | * performs steps 6 and 7 for the victim rule, most notably by calling its | |
3493 | * ->rule_dealloc() function. | |
3494 | * | |
3495 | * If 'error' is nonzero, then generally the operation will be rolled back: | |
3496 | * | |
3497 | * - If 'op' is an "add flow" operation, ofproto removes the new rule or | |
3498 | * restores the original rule. The caller must have uninitialized any | |
3499 | * derived state in the new rule, as in step 5 of in the "Life Cycle" in | |
3500 | * ofproto/ofproto-provider.h. ofoperation_complete() performs steps 6 and | |
3501 | * and 7 for the new rule, calling its ->rule_dealloc() function. | |
3502 | * | |
3503 | * - If 'op' is a "modify flow" operation, ofproto restores the original | |
3504 | * actions. | |
3505 | * | |
3506 | * - 'op' must not be a "delete flow" operation. Removing a rule is not | |
3507 | * allowed to fail. It must always succeed. | |
7ee20df1 | 3508 | * |
5bee6e26 JP |
3509 | * Please see the large comment in ofproto/ofproto-provider.h titled |
3510 | * "Asynchronous Operation Support" for more information. */ | |
7ee20df1 | 3511 | void |
90bf1e07 | 3512 | ofoperation_complete(struct ofoperation *op, enum ofperr error) |
7ee20df1 BP |
3513 | { |
3514 | struct ofopgroup *group = op->group; | |
3515 | struct rule *rule = op->rule; | |
52a90c29 | 3516 | struct ofproto *ofproto = rule->ofproto; |
7ee20df1 BP |
3517 | |
3518 | assert(rule->pending == op); | |
3519 | assert(op->status < 0); | |
7ee20df1 BP |
3520 | |
3521 | if (!error | |
3522 | && !group->error | |
3523 | && op->type != OFOPERATION_DELETE | |
3524 | && group->ofconn | |
3525 | && group->buffer_id != UINT32_MAX | |
3526 | && list_is_singleton(&op->group_node)) { | |
3527 | struct ofpbuf *packet; | |
3528 | uint16_t in_port; | |
3529 | ||
3530 | error = ofconn_pktbuf_retrieve(group->ofconn, group->buffer_id, | |
3531 | &packet, &in_port); | |
3532 | if (packet) { | |
3533 | assert(!error); | |
3534 | error = rule_execute(rule, in_port, packet); | |
3535 | } | |
3536 | } | |
3537 | if (!group->error) { | |
3538 | group->error = error; | |
3539 | } | |
3540 | ||
3541 | switch (op->type) { | |
3542 | case OFOPERATION_ADD: | |
3543 | if (!error) { | |
1eae3d33 | 3544 | ofproto_rule_destroy__(op->victim); |
9075907c BP |
3545 | if ((rule->cr.wc.vlan_tci_mask & htons(VLAN_VID_MASK)) |
3546 | == htons(VLAN_VID_MASK)) { | |
3547 | if (ofproto->vlan_bitmap) { | |
3548 | uint16_t vid = vlan_tci_to_vid(rule->cr.flow.vlan_tci); | |
3549 | ||
3550 | if (!bitmap_is_set(ofproto->vlan_bitmap, vid)) { | |
3551 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
3552 | ofproto->vlans_changed = true; | |
3553 | } | |
3554 | } else { | |
52a90c29 BP |
3555 | ofproto->vlans_changed = true; |
3556 | } | |
3557 | } | |
7ee20df1 | 3558 | } else { |
d0918789 | 3559 | oftable_substitute_rule(rule, op->victim); |
7ee20df1 BP |
3560 | ofproto_rule_destroy__(rule); |
3561 | } | |
7ee20df1 BP |
3562 | break; |
3563 | ||
3564 | case OFOPERATION_DELETE: | |
3565 | assert(!error); | |
3566 | ofproto_rule_destroy__(rule); | |
3567 | op->rule = NULL; | |
3568 | break; | |
3569 | ||
3570 | case OFOPERATION_MODIFY: | |
308881af BP |
3571 | if (!error) { |
3572 | rule->modified = time_msec(); | |
3573 | } else { | |
7ee20df1 BP |
3574 | free(rule->actions); |
3575 | rule->actions = op->actions; | |
3576 | rule->n_actions = op->n_actions; | |
3577 | op->actions = NULL; | |
3578 | } | |
3579 | break; | |
3580 | ||
3581 | default: | |
3582 | NOT_REACHED(); | |
3583 | } | |
3584 | ofoperation_destroy(op); | |
3585 | } | |
3586 | ||
3587 | struct rule * | |
3588 | ofoperation_get_victim(struct ofoperation *op) | |
3589 | { | |
3590 | assert(op->type == OFOPERATION_ADD); | |
3591 | return op->victim; | |
064af421 BP |
3592 | } |
3593 | \f | |
064af421 | 3594 | static uint64_t |
fa60c019 | 3595 | pick_datapath_id(const struct ofproto *ofproto) |
064af421 | 3596 | { |
fa60c019 | 3597 | const struct ofport *port; |
064af421 | 3598 | |
abe529af | 3599 | port = ofproto_get_port(ofproto, OFPP_LOCAL); |
fa60c019 BP |
3600 | if (port) { |
3601 | uint8_t ea[ETH_ADDR_LEN]; | |
3602 | int error; | |
3603 | ||
3604 | error = netdev_get_etheraddr(port->netdev, ea); | |
064af421 BP |
3605 | if (!error) { |
3606 | return eth_addr_to_uint64(ea); | |
3607 | } | |
3608 | VLOG_WARN("could not get MAC address for %s (%s)", | |
fa60c019 | 3609 | netdev_get_name(port->netdev), strerror(error)); |
064af421 | 3610 | } |
fa60c019 | 3611 | return ofproto->fallback_dpid; |
064af421 BP |
3612 | } |
3613 | ||
3614 | static uint64_t | |
3615 | pick_fallback_dpid(void) | |
3616 | { | |
3617 | uint8_t ea[ETH_ADDR_LEN]; | |
70150daf | 3618 | eth_addr_nicira_random(ea); |
064af421 BP |
3619 | return eth_addr_to_uint64(ea); |
3620 | } | |
3621 | \f | |
254750ce BP |
3622 | /* Table overflow policy. */ |
3623 | ||
3624 | /* Chooses and returns a rule to evict from 'table'. Returns NULL if the table | |
3625 | * is not configured to evict rules or if the table contains no evictable | |
3626 | * rules. (Rules with 'evictable' set to false or with no timeouts are not | |
3627 | * evictable.) */ | |
3628 | static struct rule * | |
3629 | choose_rule_to_evict(struct oftable *table) | |
3630 | { | |
3631 | struct eviction_group *evg; | |
3632 | ||
3633 | if (!table->eviction_fields) { | |
3634 | return NULL; | |
3635 | } | |
3636 | ||
3637 | /* In the common case, the outer and inner loops here will each be entered | |
3638 | * exactly once: | |
3639 | * | |
3640 | * - The inner loop normally "return"s in its first iteration. If the | |
3641 | * eviction group has any evictable rules, then it always returns in | |
3642 | * some iteration. | |
3643 | * | |
3644 | * - The outer loop only iterates more than once if the largest eviction | |
3645 | * group has no evictable rules. | |
3646 | * | |
3647 | * - The outer loop can exit only if table's 'max_flows' is all filled up | |
3648 | * by unevictable rules'. */ | |
3649 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { | |
3650 | struct rule *rule; | |
3651 | ||
3652 | HEAP_FOR_EACH (rule, evg_node, &evg->rules) { | |
3653 | if (rule->evictable) { | |
3654 | return rule; | |
3655 | } | |
3656 | } | |
3657 | } | |
3658 | ||
3659 | return NULL; | |
3660 | } | |
3661 | ||
3662 | /* Searches 'ofproto' for tables that have more flows than their configured | |
3663 | * maximum and that have flow eviction enabled, and evicts as many flows as | |
3664 | * necessary and currently feasible from them. | |
3665 | * | |
3666 | * This triggers only when an OpenFlow table has N flows in it and then the | |
3667 | * client configures a maximum number of flows less than N. */ | |
3668 | static void | |
3669 | ofproto_evict(struct ofproto *ofproto) | |
3670 | { | |
3671 | struct ofopgroup *group; | |
3672 | struct oftable *table; | |
3673 | ||
3674 | group = ofopgroup_create_unattached(ofproto); | |
3675 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
3676 | while (classifier_count(&table->cls) > table->max_flows | |
3677 | && table->eviction_fields) { | |
3678 | struct rule *rule; | |
3679 | ||
3680 | rule = choose_rule_to_evict(table); | |
3681 | if (!rule || rule->pending) { | |
3682 | break; | |
3683 | } | |
3684 | ||
3685 | ofoperation_create(group, rule, OFOPERATION_DELETE); | |
3686 | oftable_remove_rule(rule); | |
3687 | ofproto->ofproto_class->rule_destruct(rule); | |
3688 | } | |
3689 | } | |
3690 | ofopgroup_submit(group); | |
3691 | } | |
3692 | \f | |
3693 | /* Eviction groups. */ | |
3694 | ||
3695 | /* Returns the priority to use for an eviction_group that contains 'n_rules' | |
3696 | * rules. The priority contains low-order random bits to ensure that eviction | |
3697 | * groups with the same number of rules are prioritized randomly. */ | |
3698 | static uint32_t | |
3699 | eviction_group_priority(size_t n_rules) | |
3700 | { | |
3701 | uint16_t size = MIN(UINT16_MAX, n_rules); | |
3702 | return (size << 16) | random_uint16(); | |
3703 | } | |
3704 | ||
3705 | /* Updates 'evg', an eviction_group within 'table', following a change that | |
3706 | * adds or removes rules in 'evg'. */ | |
3707 | static void | |
3708 | eviction_group_resized(struct oftable *table, struct eviction_group *evg) | |
3709 | { | |
3710 | heap_change(&table->eviction_groups_by_size, &evg->size_node, | |
3711 | eviction_group_priority(heap_count(&evg->rules))); | |
3712 | } | |
3713 | ||
3714 | /* Destroys 'evg', an eviction_group within 'table': | |
3715 | * | |
3716 | * - Removes all the rules, if any, from 'evg'. (It doesn't destroy the | |
3717 | * rules themselves, just removes them from the eviction group.) | |
3718 | * | |
3719 | * - Removes 'evg' from 'table'. | |
3720 | * | |
3721 | * - Frees 'evg'. */ | |
3722 | static void | |
3723 | eviction_group_destroy(struct oftable *table, struct eviction_group *evg) | |
3724 | { | |
3725 | while (!heap_is_empty(&evg->rules)) { | |
3726 | struct rule *rule; | |
3727 | ||
3728 | rule = CONTAINER_OF(heap_pop(&evg->rules), struct rule, evg_node); | |
3729 | rule->eviction_group = NULL; | |
3730 | } | |
3731 | hmap_remove(&table->eviction_groups_by_id, &evg->id_node); | |
3732 | heap_remove(&table->eviction_groups_by_size, &evg->size_node); | |
3733 | heap_destroy(&evg->rules); | |
3734 | free(evg); | |
3735 | } | |
3736 | ||
3737 | /* Removes 'rule' from its eviction group, if any. */ | |
3738 | static void | |
3739 | eviction_group_remove_rule(struct rule *rule) | |
3740 | { | |
3741 | if (rule->eviction_group) { | |
3742 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
3743 | struct eviction_group *evg = rule->eviction_group; | |
3744 | ||
3745 | rule->eviction_group = NULL; | |
3746 | heap_remove(&evg->rules, &rule->evg_node); | |
3747 | if (heap_is_empty(&evg->rules)) { | |
3748 | eviction_group_destroy(table, evg); | |
3749 | } else { | |
3750 | eviction_group_resized(table, evg); | |
3751 | } | |
3752 | } | |
3753 | } | |
3754 | ||
3755 | /* Hashes the 'rule''s values for the eviction_fields of 'rule''s table, and | |
3756 | * returns the hash value. */ | |
3757 | static uint32_t | |
3758 | eviction_group_hash_rule(struct rule *rule) | |
3759 | { | |
3760 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
3761 | const struct mf_subfield *sf; | |
3762 | uint32_t hash; | |
3763 | ||
3764 | hash = table->eviction_group_id_basis; | |
3765 | for (sf = table->eviction_fields; | |
3766 | sf < &table->eviction_fields[table->n_eviction_fields]; | |
3767 | sf++) | |
3768 | { | |
3769 | if (mf_are_prereqs_ok(sf->field, &rule->cr.flow)) { | |
3770 | union mf_value value; | |
3771 | ||
3772 | mf_get_value(sf->field, &rule->cr.flow, &value); | |
3773 | if (sf->ofs) { | |
3774 | bitwise_zero(&value, sf->field->n_bytes, 0, sf->ofs); | |
3775 | } | |
3776 | if (sf->ofs + sf->n_bits < sf->field->n_bytes * 8) { | |
3777 | unsigned int start = sf->ofs + sf->n_bits; | |
3778 | bitwise_zero(&value, sf->field->n_bytes, start, | |
3779 | sf->field->n_bytes * 8 - start); | |
3780 | } | |
3781 | hash = hash_bytes(&value, sf->field->n_bytes, hash); | |
3782 | } else { | |
3783 | hash = hash_int(hash, 0); | |
3784 | } | |
3785 | } | |
3786 | ||
3787 | return hash; | |
3788 | } | |
3789 | ||
3790 | /* Returns an eviction group within 'table' with the given 'id', creating one | |
3791 | * if necessary. */ | |
3792 | static struct eviction_group * | |
3793 | eviction_group_find(struct oftable *table, uint32_t id) | |
3794 | { | |
3795 | struct eviction_group *evg; | |
3796 | ||
3797 | HMAP_FOR_EACH_WITH_HASH (evg, id_node, id, &table->eviction_groups_by_id) { | |
3798 | return evg; | |
3799 | } | |
3800 | ||
3801 | evg = xmalloc(sizeof *evg); | |
3802 | hmap_insert(&table->eviction_groups_by_id, &evg->id_node, id); | |
3803 | heap_insert(&table->eviction_groups_by_size, &evg->size_node, | |
3804 | eviction_group_priority(0)); | |
3805 | heap_init(&evg->rules); | |
3806 | ||
3807 | return evg; | |
3808 | } | |
3809 | ||
3810 | /* Returns an eviction priority for 'rule'. The return value should be | |
3811 | * interpreted so that higher priorities make a rule more attractive candidates | |
3812 | * for eviction. */ | |
3813 | static uint32_t | |
3814 | rule_eviction_priority(struct rule *rule) | |
3815 | { | |
3816 | long long int hard_expiration; | |
3817 | long long int idle_expiration; | |
3818 | long long int expiration; | |
3819 | uint32_t expiration_offset; | |
3820 | ||
3821 | /* Calculate time of expiration. */ | |
3822 | hard_expiration = (rule->hard_timeout | |
3823 | ? rule->modified + rule->hard_timeout * 1000 | |
3824 | : LLONG_MAX); | |
3825 | idle_expiration = (rule->idle_timeout | |
3826 | ? rule->used + rule->idle_timeout * 1000 | |
3827 | : LLONG_MAX); | |
3828 | expiration = MIN(hard_expiration, idle_expiration); | |
3829 | if (expiration == LLONG_MAX) { | |
3830 | return 0; | |
3831 | } | |
3832 | ||
3833 | /* Calculate the time of expiration as a number of (approximate) seconds | |
3834 | * after program startup. | |
3835 | * | |
3836 | * This should work OK for program runs that last UINT32_MAX seconds or | |
3837 | * less. Therefore, please restart OVS at least once every 136 years. */ | |
3838 | expiration_offset = (expiration >> 10) - (time_boot_msec() >> 10); | |
3839 | ||
3840 | /* Invert the expiration offset because we're using a max-heap. */ | |
3841 | return UINT32_MAX - expiration_offset; | |
3842 | } | |
3843 | ||
3844 | /* Adds 'rule' to an appropriate eviction group for its oftable's | |
3845 | * configuration. Does nothing if 'rule''s oftable doesn't have eviction | |
3846 | * enabled, or if 'rule' is a permanent rule (one that will never expire on its | |
3847 | * own). | |
3848 | * | |
3849 | * The caller must ensure that 'rule' is not already in an eviction group. */ | |
3850 | static void | |
3851 | eviction_group_add_rule(struct rule *rule) | |
3852 | { | |
3853 | struct ofproto *ofproto = rule->ofproto; | |
3854 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
3855 | ||
3856 | if (table->eviction_fields | |
3857 | && (rule->hard_timeout || rule->idle_timeout)) { | |
3858 | struct eviction_group *evg; | |
3859 | ||
3860 | evg = eviction_group_find(table, eviction_group_hash_rule(rule)); | |
3861 | ||
3862 | rule->eviction_group = evg; | |
3863 | heap_insert(&evg->rules, &rule->evg_node, | |
3864 | rule_eviction_priority(rule)); | |
3865 | eviction_group_resized(table, evg); | |
3866 | } | |
3867 | } | |
3868 | \f | |
d0918789 BP |
3869 | /* oftables. */ |
3870 | ||
3871 | /* Initializes 'table'. */ | |
3872 | static void | |
3873 | oftable_init(struct oftable *table) | |
3874 | { | |
5c67e4af | 3875 | memset(table, 0, sizeof *table); |
d0918789 BP |
3876 | classifier_init(&table->cls); |
3877 | } | |
3878 | ||
254750ce | 3879 | /* Destroys 'table', including its classifier and eviction groups. |
d0918789 BP |
3880 | * |
3881 | * The caller is responsible for freeing 'table' itself. */ | |
3882 | static void | |
3883 | oftable_destroy(struct oftable *table) | |
3884 | { | |
3885 | assert(classifier_is_empty(&table->cls)); | |
254750ce | 3886 | oftable_disable_eviction(table); |
d0918789 | 3887 | classifier_destroy(&table->cls); |
254750ce BP |
3888 | free(table->name); |
3889 | } | |
3890 | ||
3891 | /* Changes the name of 'table' to 'name'. If 'name' is NULL or the empty | |
3892 | * string, then 'table' will use its default name. | |
3893 | * | |
3894 | * This only affects the name exposed for a table exposed through the OpenFlow | |
3895 | * OFPST_TABLE (as printed by "ovs-ofctl dump-tables"). */ | |
3896 | static void | |
3897 | oftable_set_name(struct oftable *table, const char *name) | |
3898 | { | |
3899 | if (name && name[0]) { | |
3900 | int len = strnlen(name, OFP_MAX_TABLE_NAME_LEN); | |
3901 | if (!table->name || strncmp(name, table->name, len)) { | |
3902 | free(table->name); | |
3903 | table->name = xmemdup0(name, len); | |
3904 | } | |
3905 | } else { | |
3906 | free(table->name); | |
3907 | table->name = NULL; | |
3908 | } | |
3909 | } | |
3910 | ||
3911 | /* oftables support a choice of two policies when adding a rule would cause the | |
3912 | * number of flows in the table to exceed the configured maximum number: either | |
3913 | * they can refuse to add the new flow or they can evict some existing flow. | |
3914 | * This function configures the former policy on 'table'. */ | |
3915 | static void | |
3916 | oftable_disable_eviction(struct oftable *table) | |
3917 | { | |
3918 | if (table->eviction_fields) { | |
3919 | struct eviction_group *evg, *next; | |
3920 | ||
3921 | HMAP_FOR_EACH_SAFE (evg, next, id_node, | |
3922 | &table->eviction_groups_by_id) { | |
3923 | eviction_group_destroy(table, evg); | |
3924 | } | |
3925 | hmap_destroy(&table->eviction_groups_by_id); | |
3926 | heap_destroy(&table->eviction_groups_by_size); | |
3927 | ||
3928 | free(table->eviction_fields); | |
3929 | table->eviction_fields = NULL; | |
3930 | table->n_eviction_fields = 0; | |
3931 | } | |
3932 | } | |
3933 | ||
3934 | /* oftables support a choice of two policies when adding a rule would cause the | |
3935 | * number of flows in the table to exceed the configured maximum number: either | |
3936 | * they can refuse to add the new flow or they can evict some existing flow. | |
3937 | * This function configures the latter policy on 'table', with fairness based | |
3938 | * on the values of the 'n_fields' fields specified in 'fields'. (Specifying | |
3939 | * 'n_fields' as 0 disables fairness.) */ | |
3940 | static void | |
3941 | oftable_enable_eviction(struct oftable *table, | |
3942 | const struct mf_subfield *fields, size_t n_fields) | |
3943 | { | |
3944 | struct cls_cursor cursor; | |
3945 | struct rule *rule; | |
3946 | ||
3947 | if (table->eviction_fields | |
3948 | && n_fields == table->n_eviction_fields | |
3949 | && (!n_fields | |
3950 | || !memcmp(fields, table->eviction_fields, | |
3951 | n_fields * sizeof *fields))) { | |
3952 | /* No change. */ | |
3953 | return; | |
3954 | } | |
3955 | ||
3956 | oftable_disable_eviction(table); | |
3957 | ||
3958 | table->n_eviction_fields = n_fields; | |
3959 | table->eviction_fields = xmemdup(fields, n_fields * sizeof *fields); | |
3960 | ||
3961 | table->eviction_group_id_basis = random_uint32(); | |
3962 | hmap_init(&table->eviction_groups_by_id); | |
3963 | heap_init(&table->eviction_groups_by_size); | |
3964 | ||
3965 | cls_cursor_init(&cursor, &table->cls, NULL); | |
3966 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { | |
3967 | eviction_group_add_rule(rule); | |
3968 | } | |
d0918789 BP |
3969 | } |
3970 | ||
3971 | /* Removes 'rule' from the oftable that contains it. */ | |
3972 | static void | |
3973 | oftable_remove_rule(struct rule *rule) | |
3974 | { | |
3975 | struct ofproto *ofproto = rule->ofproto; | |
3976 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
3977 | ||
3978 | classifier_remove(&table->cls, &rule->cr); | |
254750ce | 3979 | eviction_group_remove_rule(rule); |
d0918789 BP |
3980 | } |
3981 | ||
3982 | /* Inserts 'rule' into its oftable. Removes any existing rule from 'rule''s | |
3983 | * oftable that has an identical cls_rule. Returns the rule that was removed, | |
3984 | * if any, and otherwise NULL. */ | |
3985 | static struct rule * | |
3986 | oftable_replace_rule(struct rule *rule) | |
3987 | { | |
3988 | struct ofproto *ofproto = rule->ofproto; | |
3989 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
254750ce | 3990 | struct rule *victim; |
d0918789 | 3991 | |
254750ce BP |
3992 | victim = rule_from_cls_rule(classifier_replace(&table->cls, &rule->cr)); |
3993 | if (victim) { | |
3994 | eviction_group_remove_rule(victim); | |
3995 | } | |
3996 | eviction_group_add_rule(rule); | |
3997 | return victim; | |
d0918789 BP |
3998 | } |
3999 | ||
4000 | /* Removes 'old' from its oftable then, if 'new' is nonnull, inserts 'new'. */ | |
4001 | static void | |
4002 | oftable_substitute_rule(struct rule *old, struct rule *new) | |
4003 | { | |
4004 | if (new) { | |
4005 | oftable_replace_rule(new); | |
4006 | } else { | |
4007 | oftable_remove_rule(old); | |
4008 | } | |
4009 | } | |
4010 | \f | |
abe529af | 4011 | /* unixctl commands. */ |
7aa697dd | 4012 | |
abe529af | 4013 | struct ofproto * |
2ac6bedd | 4014 | ofproto_lookup(const char *name) |
7aa697dd | 4015 | { |
2ac6bedd | 4016 | struct ofproto *ofproto; |
7aa697dd | 4017 | |
2ac6bedd BP |
4018 | HMAP_FOR_EACH_WITH_HASH (ofproto, hmap_node, hash_string(name, 0), |
4019 | &all_ofprotos) { | |
4020 | if (!strcmp(ofproto->name, name)) { | |
4021 | return ofproto; | |
4022 | } | |
7aa697dd | 4023 | } |
2ac6bedd | 4024 | return NULL; |
7aa697dd BP |
4025 | } |
4026 | ||
4027 | static void | |
0e15264f BP |
4028 | ofproto_unixctl_list(struct unixctl_conn *conn, int argc OVS_UNUSED, |
4029 | const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED) | |
7aa697dd | 4030 | { |
7aa697dd | 4031 | struct ofproto *ofproto; |
7aa697dd | 4032 | struct ds results; |
7aa697dd | 4033 | |
7aa697dd | 4034 | ds_init(&results); |
2ac6bedd BP |
4035 | HMAP_FOR_EACH (ofproto, hmap_node, &all_ofprotos) { |
4036 | ds_put_format(&results, "%s\n", ofproto->name); | |
7aa697dd | 4037 | } |
bde9f75d | 4038 | unixctl_command_reply(conn, ds_cstr(&results)); |
7aa697dd | 4039 | ds_destroy(&results); |
7aa697dd BP |
4040 | } |
4041 | ||
4042 | static void | |
4043 | ofproto_unixctl_init(void) | |
4044 | { | |
4045 | static bool registered; | |
4046 | if (registered) { | |
4047 | return; | |
4048 | } | |
4049 | registered = true; | |
4050 | ||
0e15264f BP |
4051 | unixctl_command_register("ofproto/list", "", 0, 0, |
4052 | ofproto_unixctl_list, NULL); | |
064af421 | 4053 | } |
52a90c29 BP |
4054 | \f |
4055 | /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.) | |
4056 | * | |
4057 | * This is deprecated. It is only for compatibility with broken device drivers | |
4058 | * in old versions of Linux that do not properly support VLANs when VLAN | |
4059 | * devices are not used. When broken device drivers are no longer in | |
4060 | * widespread use, we will delete these interfaces. */ | |
4061 | ||
4062 | /* Sets a 1-bit in the 4096-bit 'vlan_bitmap' for each VLAN ID that is matched | |
4063 | * (exactly) by an OpenFlow rule in 'ofproto'. */ | |
4064 | void | |
4065 | ofproto_get_vlan_usage(struct ofproto *ofproto, unsigned long int *vlan_bitmap) | |
4066 | { | |
d0918789 | 4067 | const struct oftable *oftable; |
52a90c29 BP |
4068 | |
4069 | free(ofproto->vlan_bitmap); | |
4070 | ofproto->vlan_bitmap = bitmap_allocate(4096); | |
4071 | ofproto->vlans_changed = false; | |
4072 | ||
d0918789 | 4073 | OFPROTO_FOR_EACH_TABLE (oftable, ofproto) { |
52a90c29 BP |
4074 | const struct cls_table *table; |
4075 | ||
d0918789 | 4076 | HMAP_FOR_EACH (table, hmap_node, &oftable->cls.tables) { |
9075907c BP |
4077 | if ((table->wc.vlan_tci_mask & htons(VLAN_VID_MASK)) |
4078 | == htons(VLAN_VID_MASK)) { | |
52a90c29 BP |
4079 | const struct cls_rule *rule; |
4080 | ||
4081 | HMAP_FOR_EACH (rule, hmap_node, &table->rules) { | |
4082 | uint16_t vid = vlan_tci_to_vid(rule->flow.vlan_tci); | |
4083 | bitmap_set1(vlan_bitmap, vid); | |
4084 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
4085 | } | |
4086 | } | |
4087 | } | |
4088 | } | |
4089 | } | |
4090 | ||
4091 | /* Returns true if new VLANs have come into use by the flow table since the | |
4092 | * last call to ofproto_get_vlan_usage(). | |
4093 | * | |
4094 | * We don't track when old VLANs stop being used. */ | |
4095 | bool | |
4096 | ofproto_has_vlan_usage_changed(const struct ofproto *ofproto) | |
4097 | { | |
4098 | return ofproto->vlans_changed; | |
4099 | } | |
4100 | ||
4101 | /* Configures a VLAN splinter binding between the ports identified by OpenFlow | |
4102 | * port numbers 'vlandev_ofp_port' and 'realdev_ofp_port'. If | |
4103 | * 'realdev_ofp_port' is nonzero, then the VLAN device is enslaved to the real | |
4104 | * device as a VLAN splinter for VLAN ID 'vid'. If 'realdev_ofp_port' is zero, | |
4105 | * then the VLAN device is un-enslaved. */ | |
4106 | int | |
4107 | ofproto_port_set_realdev(struct ofproto *ofproto, uint16_t vlandev_ofp_port, | |
4108 | uint16_t realdev_ofp_port, int vid) | |
4109 | { | |
4110 | struct ofport *ofport; | |
4111 | int error; | |
4112 | ||
4113 | assert(vlandev_ofp_port != realdev_ofp_port); | |
4114 | ||
4115 | ofport = ofproto_get_port(ofproto, vlandev_ofp_port); | |
4116 | if (!ofport) { | |
4117 | VLOG_WARN("%s: cannot set realdev on nonexistent port %"PRIu16, | |
4118 | ofproto->name, vlandev_ofp_port); | |
4119 | return EINVAL; | |
4120 | } | |
4121 | ||
4122 | if (!ofproto->ofproto_class->set_realdev) { | |
4123 | if (!vlandev_ofp_port) { | |
4124 | return 0; | |
4125 | } | |
4126 | VLOG_WARN("%s: vlan splinters not supported", ofproto->name); | |
4127 | return EOPNOTSUPP; | |
4128 | } | |
4129 | ||
4130 | error = ofproto->ofproto_class->set_realdev(ofport, realdev_ofp_port, vid); | |
4131 | if (error) { | |
4132 | VLOG_WARN("%s: setting realdev on port %"PRIu16" (%s) failed (%s)", | |
4133 | ofproto->name, vlandev_ofp_port, | |
4134 | netdev_get_name(ofport->netdev), strerror(error)); | |
4135 | } | |
4136 | return error; | |
4137 | } |