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064af421 | 1 | /* |
cb22974d | 2 | * Copyright (c) 2009, 2010, 2011, 2012, 2013 Nicira, Inc. |
43253595 | 3 | * Copyright (c) 2010 Jean Tourrilhes - HP-Labs. |
064af421 | 4 | * |
a14bc59f BP |
5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
6 | * you may not use this file except in compliance with the License. | |
7 | * You may obtain a copy of the License at: | |
064af421 | 8 | * |
a14bc59f BP |
9 | * http://www.apache.org/licenses/LICENSE-2.0 |
10 | * | |
11 | * Unless required by applicable law or agreed to in writing, software | |
12 | * distributed under the License is distributed on an "AS IS" BASIS, | |
13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
14 | * See the License for the specific language governing permissions and | |
15 | * limitations under the License. | |
064af421 BP |
16 | */ |
17 | ||
18 | #include <config.h> | |
19 | #include "ofproto.h" | |
20 | #include <errno.h> | |
21 | #include <inttypes.h> | |
064af421 BP |
22 | #include <stdbool.h> |
23 | #include <stdlib.h> | |
52a90c29 | 24 | #include "bitmap.h" |
10a24935 | 25 | #include "byte-order.h" |
064af421 | 26 | #include "classifier.h" |
19a87e36 | 27 | #include "connmgr.h" |
064af421 | 28 | #include "coverage.h" |
4f2cad2c | 29 | #include "dynamic-string.h" |
ca0f572c BP |
30 | #include "hash.h" |
31 | #include "hmap.h" | |
254750ce | 32 | #include "meta-flow.h" |
064af421 | 33 | #include "netdev.h" |
09246b99 | 34 | #include "nx-match.h" |
f25d0cf3 | 35 | #include "ofp-actions.h" |
90bf1e07 | 36 | #include "ofp-errors.h" |
982697a4 | 37 | #include "ofp-msgs.h" |
064af421 | 38 | #include "ofp-print.h" |
fa37b408 | 39 | #include "ofp-util.h" |
064af421 | 40 | #include "ofpbuf.h" |
5bee6e26 | 41 | #include "ofproto-provider.h" |
064af421 BP |
42 | #include "openflow/nicira-ext.h" |
43 | #include "openflow/openflow.h" | |
064af421 BP |
44 | #include "packets.h" |
45 | #include "pinsched.h" | |
46 | #include "pktbuf.h" | |
47 | #include "poll-loop.h" | |
254750ce | 48 | #include "random.h" |
064af421 | 49 | #include "shash.h" |
0d085684 | 50 | #include "simap.h" |
b3c01ed3 | 51 | #include "sset.h" |
064af421 | 52 | #include "timeval.h" |
c4617b3c | 53 | #include "unaligned.h" |
4f2cad2c | 54 | #include "unixctl.h" |
5136ce49 | 55 | #include "vlog.h" |
064af421 | 56 | |
d98e6007 | 57 | VLOG_DEFINE_THIS_MODULE(ofproto); |
064af421 | 58 | |
d76f09ea | 59 | COVERAGE_DEFINE(ofproto_error); |
d76f09ea | 60 | COVERAGE_DEFINE(ofproto_flush); |
d76f09ea | 61 | COVERAGE_DEFINE(ofproto_no_packet_in); |
d76f09ea BP |
62 | COVERAGE_DEFINE(ofproto_packet_out); |
63 | COVERAGE_DEFINE(ofproto_queue_req); | |
64 | COVERAGE_DEFINE(ofproto_recv_openflow); | |
65 | COVERAGE_DEFINE(ofproto_reinit_ports); | |
d76f09ea BP |
66 | COVERAGE_DEFINE(ofproto_uninstallable); |
67 | COVERAGE_DEFINE(ofproto_update_port); | |
68 | ||
7ee20df1 BP |
69 | enum ofproto_state { |
70 | S_OPENFLOW, /* Processing OpenFlow commands. */ | |
254750ce | 71 | S_EVICT, /* Evicting flows from over-limit tables. */ |
7ee20df1 BP |
72 | S_FLUSH, /* Deleting all flow table rules. */ |
73 | }; | |
74 | ||
75 | enum ofoperation_type { | |
76 | OFOPERATION_ADD, | |
77 | OFOPERATION_DELETE, | |
78 | OFOPERATION_MODIFY | |
79 | }; | |
80 | ||
81 | /* A single OpenFlow request can execute any number of operations. The | |
82 | * ofopgroup maintain OpenFlow state common to all of the operations, e.g. the | |
83 | * ofconn to which an error reply should be sent if necessary. | |
84 | * | |
85 | * ofproto initiates some operations internally. These operations are still | |
86 | * assigned to groups but will not have an associated ofconn. */ | |
87 | struct ofopgroup { | |
88 | struct ofproto *ofproto; /* Owning ofproto. */ | |
89 | struct list ofproto_node; /* In ofproto's "pending" list. */ | |
90 | struct list ops; /* List of "struct ofoperation"s. */ | |
e615b0a3 | 91 | int n_running; /* Number of ops still pending. */ |
7ee20df1 BP |
92 | |
93 | /* Data needed to send OpenFlow reply on failure or to send a buffered | |
94 | * packet on success. | |
95 | * | |
96 | * If list_is_empty(ofconn_node) then this ofopgroup never had an | |
97 | * associated ofconn or its ofconn's connection dropped after it initiated | |
98 | * the operation. In the latter case 'ofconn' is a wild pointer that | |
99 | * refers to freed memory, so the 'ofconn' member must be used only if | |
100 | * !list_is_empty(ofconn_node). | |
101 | */ | |
102 | struct list ofconn_node; /* In ofconn's list of pending opgroups. */ | |
103 | struct ofconn *ofconn; /* ofconn for reply (but see note above). */ | |
104 | struct ofp_header *request; /* Original request (truncated at 64 bytes). */ | |
105 | uint32_t buffer_id; /* Buffer id from original request. */ | |
7ee20df1 BP |
106 | }; |
107 | ||
7024dffe BP |
108 | static struct ofopgroup *ofopgroup_create_unattached(struct ofproto *); |
109 | static struct ofopgroup *ofopgroup_create(struct ofproto *, struct ofconn *, | |
110 | const struct ofp_header *, | |
111 | uint32_t buffer_id); | |
7ee20df1 | 112 | static void ofopgroup_submit(struct ofopgroup *); |
e615b0a3 | 113 | static void ofopgroup_complete(struct ofopgroup *); |
7ee20df1 BP |
114 | |
115 | /* A single flow table operation. */ | |
116 | struct ofoperation { | |
117 | struct ofopgroup *group; /* Owning group. */ | |
118 | struct list group_node; /* In ofopgroup's "ops" list. */ | |
119 | struct hmap_node hmap_node; /* In ofproto's "deletions" hmap. */ | |
120 | struct rule *rule; /* Rule being operated upon. */ | |
121 | enum ofoperation_type type; /* Type of operation. */ | |
08043761 BP |
122 | |
123 | /* OFOPERATION_ADD. */ | |
124 | struct rule *victim; /* Rule being replaced, if any.. */ | |
125 | ||
126 | /* OFOPERATION_MODIFY: The old actions, if the actions are changing. */ | |
127 | struct ofpact *ofpacts; | |
128 | size_t ofpacts_len; | |
129 | ||
2b07c8b1 BP |
130 | /* OFOPERATION_DELETE. */ |
131 | enum ofp_flow_removed_reason reason; /* Reason flow was removed. */ | |
132 | ||
7ee20df1 | 133 | ovs_be64 flow_cookie; /* Rule's old flow cookie. */ |
e615b0a3 | 134 | enum ofperr error; /* 0 if no error. */ |
7ee20df1 BP |
135 | }; |
136 | ||
a7d94793 BP |
137 | static struct ofoperation *ofoperation_create(struct ofopgroup *, |
138 | struct rule *, | |
2b07c8b1 BP |
139 | enum ofoperation_type, |
140 | enum ofp_flow_removed_reason); | |
7ee20df1 BP |
141 | static void ofoperation_destroy(struct ofoperation *); |
142 | ||
d0918789 BP |
143 | /* oftable. */ |
144 | static void oftable_init(struct oftable *); | |
145 | static void oftable_destroy(struct oftable *); | |
878ae780 | 146 | |
254750ce BP |
147 | static void oftable_set_name(struct oftable *, const char *name); |
148 | ||
149 | static void oftable_disable_eviction(struct oftable *); | |
150 | static void oftable_enable_eviction(struct oftable *, | |
151 | const struct mf_subfield *fields, | |
152 | size_t n_fields); | |
153 | ||
d0918789 BP |
154 | static void oftable_remove_rule(struct rule *); |
155 | static struct rule *oftable_replace_rule(struct rule *); | |
156 | static void oftable_substitute_rule(struct rule *old, struct rule *new); | |
064af421 | 157 | |
254750ce BP |
158 | /* A set of rules within a single OpenFlow table (oftable) that have the same |
159 | * values for the oftable's eviction_fields. A rule to be evicted, when one is | |
160 | * needed, is taken from the eviction group that contains the greatest number | |
161 | * of rules. | |
162 | * | |
163 | * An oftable owns any number of eviction groups, each of which contains any | |
164 | * number of rules. | |
165 | * | |
166 | * Membership in an eviction group is imprecise, based on the hash of the | |
167 | * oftable's eviction_fields (in the eviction_group's id_node.hash member). | |
168 | * That is, if two rules have different eviction_fields, but those | |
169 | * eviction_fields hash to the same value, then they will belong to the same | |
170 | * eviction_group anyway. | |
171 | * | |
172 | * (When eviction is not enabled on an oftable, we don't track any eviction | |
173 | * groups, to save time and space.) */ | |
174 | struct eviction_group { | |
175 | struct hmap_node id_node; /* In oftable's "eviction_groups_by_id". */ | |
176 | struct heap_node size_node; /* In oftable's "eviction_groups_by_size". */ | |
177 | struct heap rules; /* Contains "struct rule"s. */ | |
178 | }; | |
179 | ||
180 | static struct rule *choose_rule_to_evict(struct oftable *); | |
181 | static void ofproto_evict(struct ofproto *); | |
182 | static uint32_t rule_eviction_priority(struct rule *); | |
f29152ca | 183 | |
d0918789 BP |
184 | /* ofport. */ |
185 | static void ofport_destroy__(struct ofport *); | |
186 | static void ofport_destroy(struct ofport *); | |
187 | ||
188 | static void update_port(struct ofproto *, const char *devname); | |
189 | static int init_ports(struct ofproto *); | |
190 | static void reinit_ports(struct ofproto *); | |
7ee20df1 | 191 | |
254750ce BP |
192 | /* rule. */ |
193 | static void ofproto_rule_destroy__(struct rule *); | |
194 | static void ofproto_rule_send_removed(struct rule *, uint8_t reason); | |
195 | static bool rule_is_modifiable(const struct rule *); | |
254750ce | 196 | |
d0918789 | 197 | /* OpenFlow. */ |
90bf1e07 BP |
198 | static enum ofperr add_flow(struct ofproto *, struct ofconn *, |
199 | const struct ofputil_flow_mod *, | |
200 | const struct ofp_header *); | |
254750ce | 201 | static void delete_flow__(struct rule *, struct ofopgroup *); |
7ee20df1 | 202 | static bool handle_openflow(struct ofconn *, struct ofpbuf *); |
90bf1e07 BP |
203 | static enum ofperr handle_flow_mod__(struct ofproto *, struct ofconn *, |
204 | const struct ofputil_flow_mod *, | |
d0918789 | 205 | const struct ofp_header *); |
f29152ca | 206 | |
d0918789 BP |
207 | /* ofproto. */ |
208 | static uint64_t pick_datapath_id(const struct ofproto *); | |
209 | static uint64_t pick_fallback_dpid(void); | |
210 | static void ofproto_destroy__(struct ofproto *); | |
ada3428f | 211 | static void update_mtu(struct ofproto *, struct ofport *); |
f29152ca | 212 | |
d0918789 | 213 | /* unixctl. */ |
abe529af | 214 | static void ofproto_unixctl_init(void); |
f29152ca | 215 | |
abe529af BP |
216 | /* All registered ofproto classes, in probe order. */ |
217 | static const struct ofproto_class **ofproto_classes; | |
218 | static size_t n_ofproto_classes; | |
219 | static size_t allocated_ofproto_classes; | |
7aa697dd | 220 | |
f797957a | 221 | /* Map from datapath name to struct ofproto, for use by unixctl commands. */ |
abe529af | 222 | static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos); |
ebe482fd | 223 | |
e1b1d06a JP |
224 | /* Initial mappings of port to OpenFlow number mappings. */ |
225 | static struct shash init_ofp_ports = SHASH_INITIALIZER(&init_ofp_ports); | |
226 | ||
abe529af | 227 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
f29152ca | 228 | |
b0408fca JP |
229 | /* Must be called to initialize the ofproto library. |
230 | * | |
231 | * The caller may pass in 'iface_hints', which contains an shash of | |
232 | * "iface_hint" elements indexed by the interface's name. The provider | |
233 | * may use these hints to describe the startup configuration in order to | |
234 | * reinitialize its state. The caller owns the provided data, so a | |
235 | * provider will make copies of anything required. An ofproto provider | |
236 | * will remove any existing state that is not described by the hint, and | |
237 | * may choose to remove it all. */ | |
238 | void | |
239 | ofproto_init(const struct shash *iface_hints) | |
abe529af | 240 | { |
e1b1d06a | 241 | struct shash_node *node; |
b0408fca | 242 | size_t i; |
f29152ca | 243 | |
b0408fca JP |
244 | ofproto_class_register(&ofproto_dpif_class); |
245 | ||
e1b1d06a JP |
246 | /* Make a local copy, since we don't own 'iface_hints' elements. */ |
247 | SHASH_FOR_EACH(node, iface_hints) { | |
248 | const struct iface_hint *orig_hint = node->data; | |
249 | struct iface_hint *new_hint = xmalloc(sizeof *new_hint); | |
250 | const char *br_type = ofproto_normalize_type(orig_hint->br_type); | |
251 | ||
252 | new_hint->br_name = xstrdup(orig_hint->br_name); | |
253 | new_hint->br_type = xstrdup(br_type); | |
254 | new_hint->ofp_port = orig_hint->ofp_port; | |
255 | ||
256 | shash_add(&init_ofp_ports, node->name, new_hint); | |
257 | } | |
258 | ||
b0408fca | 259 | for (i = 0; i < n_ofproto_classes; i++) { |
e1b1d06a | 260 | ofproto_classes[i]->init(&init_ofp_ports); |
abe529af BP |
261 | } |
262 | } | |
f29152ca | 263 | |
abe529af BP |
264 | /* 'type' should be a normalized datapath type, as returned by |
265 | * ofproto_normalize_type(). Returns the corresponding ofproto_class | |
266 | * structure, or a null pointer if there is none registered for 'type'. */ | |
267 | static const struct ofproto_class * | |
268 | ofproto_class_find__(const char *type) | |
269 | { | |
270 | size_t i; | |
f29152ca | 271 | |
abe529af BP |
272 | for (i = 0; i < n_ofproto_classes; i++) { |
273 | const struct ofproto_class *class = ofproto_classes[i]; | |
274 | struct sset types; | |
275 | bool found; | |
064af421 | 276 | |
abe529af BP |
277 | sset_init(&types); |
278 | class->enumerate_types(&types); | |
279 | found = sset_contains(&types, type); | |
280 | sset_destroy(&types); | |
bcf84111 | 281 | |
abe529af BP |
282 | if (found) { |
283 | return class; | |
284 | } | |
285 | } | |
286 | VLOG_WARN("unknown datapath type %s", type); | |
287 | return NULL; | |
288 | } | |
064af421 | 289 | |
abe529af BP |
290 | /* Registers a new ofproto class. After successful registration, new ofprotos |
291 | * of that type can be created using ofproto_create(). */ | |
292 | int | |
293 | ofproto_class_register(const struct ofproto_class *new_class) | |
294 | { | |
295 | size_t i; | |
7aa697dd | 296 | |
abe529af BP |
297 | for (i = 0; i < n_ofproto_classes; i++) { |
298 | if (ofproto_classes[i] == new_class) { | |
299 | return EEXIST; | |
300 | } | |
301 | } | |
064af421 | 302 | |
abe529af BP |
303 | if (n_ofproto_classes >= allocated_ofproto_classes) { |
304 | ofproto_classes = x2nrealloc(ofproto_classes, | |
305 | &allocated_ofproto_classes, | |
306 | sizeof *ofproto_classes); | |
307 | } | |
308 | ofproto_classes[n_ofproto_classes++] = new_class; | |
309 | return 0; | |
310 | } | |
064af421 | 311 | |
abe529af BP |
312 | /* Unregisters a datapath provider. 'type' must have been previously |
313 | * registered and not currently be in use by any ofprotos. After | |
314 | * unregistration new datapaths of that type cannot be opened using | |
315 | * ofproto_create(). */ | |
316 | int | |
317 | ofproto_class_unregister(const struct ofproto_class *class) | |
318 | { | |
319 | size_t i; | |
76ce9432 | 320 | |
abe529af BP |
321 | for (i = 0; i < n_ofproto_classes; i++) { |
322 | if (ofproto_classes[i] == class) { | |
323 | for (i++; i < n_ofproto_classes; i++) { | |
324 | ofproto_classes[i - 1] = ofproto_classes[i]; | |
325 | } | |
326 | n_ofproto_classes--; | |
327 | return 0; | |
328 | } | |
329 | } | |
330 | VLOG_WARN("attempted to unregister an ofproto class that is not " | |
331 | "registered"); | |
332 | return EAFNOSUPPORT; | |
333 | } | |
4a4cdb3b | 334 | |
f79e673f BP |
335 | /* Clears 'types' and enumerates all registered ofproto types into it. The |
336 | * caller must first initialize the sset. */ | |
337 | void | |
338 | ofproto_enumerate_types(struct sset *types) | |
339 | { | |
abe529af | 340 | size_t i; |
064af421 | 341 | |
abe529af BP |
342 | for (i = 0; i < n_ofproto_classes; i++) { |
343 | ofproto_classes[i]->enumerate_types(types); | |
344 | } | |
f79e673f | 345 | } |
064af421 | 346 | |
f79e673f BP |
347 | /* Returns the fully spelled out name for the given ofproto 'type'. |
348 | * | |
349 | * Normalized type string can be compared with strcmp(). Unnormalized type | |
350 | * string might be the same even if they have different spellings. */ | |
351 | const char * | |
352 | ofproto_normalize_type(const char *type) | |
353 | { | |
abe529af | 354 | return type && type[0] ? type : "system"; |
f79e673f | 355 | } |
064af421 | 356 | |
f79e673f BP |
357 | /* Clears 'names' and enumerates the names of all known created ofprotos with |
358 | * the given 'type'. The caller must first initialize the sset. Returns 0 if | |
359 | * successful, otherwise a positive errno value. | |
360 | * | |
361 | * Some kinds of datapaths might not be practically enumerable. This is not | |
362 | * considered an error. */ | |
363 | int | |
364 | ofproto_enumerate_names(const char *type, struct sset *names) | |
365 | { | |
abe529af BP |
366 | const struct ofproto_class *class = ofproto_class_find__(type); |
367 | return class ? class->enumerate_names(type, names) : EAFNOSUPPORT; | |
368 | } | |
7aa697dd | 369 | |
064af421 | 370 | int |
abe529af | 371 | ofproto_create(const char *datapath_name, const char *datapath_type, |
064af421 BP |
372 | struct ofproto **ofprotop) |
373 | { | |
abe529af BP |
374 | const struct ofproto_class *class; |
375 | struct ofproto *ofproto; | |
064af421 | 376 | int error; |
c2f0373a | 377 | int i; |
064af421 BP |
378 | |
379 | *ofprotop = NULL; | |
380 | ||
7aa697dd BP |
381 | ofproto_unixctl_init(); |
382 | ||
abe529af BP |
383 | datapath_type = ofproto_normalize_type(datapath_type); |
384 | class = ofproto_class_find__(datapath_type); | |
385 | if (!class) { | |
386 | VLOG_WARN("could not create datapath %s of unknown type %s", | |
387 | datapath_name, datapath_type); | |
388 | return EAFNOSUPPORT; | |
064af421 BP |
389 | } |
390 | ||
abe529af BP |
391 | ofproto = class->alloc(); |
392 | if (!ofproto) { | |
393 | VLOG_ERR("failed to allocate datapath %s of type %s", | |
394 | datapath_name, datapath_type); | |
395 | return ENOMEM; | |
396 | } | |
397 | ||
398 | /* Initialize. */ | |
399 | memset(ofproto, 0, sizeof *ofproto); | |
400 | ofproto->ofproto_class = class; | |
401 | ofproto->name = xstrdup(datapath_name); | |
402 | ofproto->type = xstrdup(datapath_type); | |
403 | hmap_insert(&all_ofprotos, &ofproto->hmap_node, | |
404 | hash_string(ofproto->name, 0)); | |
405 | ofproto->datapath_id = 0; | |
084f5290 | 406 | ofproto_set_flow_eviction_threshold(ofproto, |
9cac5195 | 407 | OFPROTO_FLOW_EVICTION_THRESHOLD_DEFAULT); |
8402c74b | 408 | ofproto->forward_bpdu = false; |
abe529af | 409 | ofproto->fallback_dpid = pick_fallback_dpid(); |
061bfea4 BP |
410 | ofproto->mfr_desc = NULL; |
411 | ofproto->hw_desc = NULL; | |
412 | ofproto->sw_desc = NULL; | |
413 | ofproto->serial_desc = NULL; | |
414 | ofproto->dp_desc = NULL; | |
7257b535 | 415 | ofproto->frag_handling = OFPC_FRAG_NORMAL; |
abe529af BP |
416 | hmap_init(&ofproto->ports); |
417 | shash_init(&ofproto->port_by_name); | |
e1b1d06a | 418 | simap_init(&ofproto->ofp_requests); |
91858960 | 419 | ofproto->max_ports = OFPP_MAX; |
6c1491fb BP |
420 | ofproto->tables = NULL; |
421 | ofproto->n_tables = 0; | |
e503cc19 | 422 | list_init(&ofproto->expirable); |
abe529af | 423 | ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name); |
7ee20df1 BP |
424 | ofproto->state = S_OPENFLOW; |
425 | list_init(&ofproto->pending); | |
dd5616b3 | 426 | ofproto->n_pending = 0; |
7ee20df1 | 427 | hmap_init(&ofproto->deletions); |
a5b8d268 BP |
428 | ofproto->n_add = ofproto->n_delete = ofproto->n_modify = 0; |
429 | ofproto->first_op = ofproto->last_op = LLONG_MIN; | |
430 | ofproto->next_op_report = LLONG_MAX; | |
431 | ofproto->op_backoff = LLONG_MIN; | |
52a90c29 BP |
432 | ofproto->vlan_bitmap = NULL; |
433 | ofproto->vlans_changed = false; | |
ada3428f | 434 | ofproto->min_mtu = INT_MAX; |
abe529af | 435 | |
0f5f95a9 | 436 | error = ofproto->ofproto_class->construct(ofproto); |
19a87e36 | 437 | if (error) { |
abe529af BP |
438 | VLOG_ERR("failed to open datapath %s: %s", |
439 | datapath_name, strerror(error)); | |
440 | ofproto_destroy__(ofproto); | |
19a87e36 BP |
441 | return error; |
442 | } | |
073e2a6f | 443 | |
e1b1d06a JP |
444 | /* The "max_ports" member should have been set by ->construct(ofproto). |
445 | * Port 0 is not a valid OpenFlow port, so mark that as unavailable. */ | |
446 | ofproto->ofp_port_ids = bitmap_allocate(ofproto->max_ports); | |
447 | bitmap_set1(ofproto->ofp_port_ids, 0); | |
448 | ||
c2f0373a | 449 | /* Check that hidden tables, if any, are at the end. */ |
cb22974d | 450 | ovs_assert(ofproto->n_tables); |
c2f0373a BP |
451 | for (i = 0; i + 1 < ofproto->n_tables; i++) { |
452 | enum oftable_flags flags = ofproto->tables[i].flags; | |
453 | enum oftable_flags next_flags = ofproto->tables[i + 1].flags; | |
454 | ||
cb22974d | 455 | ovs_assert(!(flags & OFTABLE_HIDDEN) || next_flags & OFTABLE_HIDDEN); |
c2f0373a | 456 | } |
19a87e36 | 457 | |
abe529af | 458 | ofproto->datapath_id = pick_datapath_id(ofproto); |
abe529af | 459 | init_ports(ofproto); |
7aa697dd | 460 | |
abe529af | 461 | *ofprotop = ofproto; |
064af421 BP |
462 | return 0; |
463 | } | |
464 | ||
91858960 BP |
465 | /* Must be called (only) by an ofproto implementation in its constructor |
466 | * function. See the large comment on 'construct' in struct ofproto_class for | |
467 | * details. */ | |
0f5f95a9 BP |
468 | void |
469 | ofproto_init_tables(struct ofproto *ofproto, int n_tables) | |
470 | { | |
471 | struct oftable *table; | |
472 | ||
cb22974d BP |
473 | ovs_assert(!ofproto->n_tables); |
474 | ovs_assert(n_tables >= 1 && n_tables <= 255); | |
0f5f95a9 BP |
475 | |
476 | ofproto->n_tables = n_tables; | |
477 | ofproto->tables = xmalloc(n_tables * sizeof *ofproto->tables); | |
478 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
479 | oftable_init(table); | |
480 | } | |
481 | } | |
482 | ||
91858960 BP |
483 | /* To be optionally called (only) by an ofproto implementation in its |
484 | * constructor function. See the large comment on 'construct' in struct | |
485 | * ofproto_class for details. | |
486 | * | |
487 | * Sets the maximum number of ports to 'max_ports'. The ofproto generic layer | |
488 | * will then ensure that actions passed into the ofproto implementation will | |
489 | * not refer to OpenFlow ports numbered 'max_ports' or higher. If this | |
490 | * function is not called, there will be no such restriction. | |
491 | * | |
492 | * Reserved ports numbered OFPP_MAX and higher are special and not subject to | |
493 | * the 'max_ports' restriction. */ | |
494 | void | |
495 | ofproto_init_max_ports(struct ofproto *ofproto, uint16_t max_ports) | |
496 | { | |
cb22974d | 497 | ovs_assert(max_ports <= OFPP_MAX); |
91858960 BP |
498 | ofproto->max_ports = max_ports; |
499 | } | |
500 | ||
e825ace2 BP |
501 | uint64_t |
502 | ofproto_get_datapath_id(const struct ofproto *ofproto) | |
503 | { | |
504 | return ofproto->datapath_id; | |
505 | } | |
506 | ||
064af421 BP |
507 | void |
508 | ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id) | |
509 | { | |
510 | uint64_t old_dpid = p->datapath_id; | |
fa60c019 | 511 | p->datapath_id = datapath_id ? datapath_id : pick_datapath_id(p); |
064af421 | 512 | if (p->datapath_id != old_dpid) { |
76ce9432 BP |
513 | /* Force all active connections to reconnect, since there is no way to |
514 | * notify a controller that the datapath ID has changed. */ | |
fa05809b | 515 | ofproto_reconnect_controllers(p); |
064af421 BP |
516 | } |
517 | } | |
518 | ||
76ce9432 BP |
519 | void |
520 | ofproto_set_controllers(struct ofproto *p, | |
521 | const struct ofproto_controller *controllers, | |
1d9ffc17 | 522 | size_t n_controllers, uint32_t allowed_versions) |
76ce9432 | 523 | { |
1d9ffc17 SH |
524 | connmgr_set_controllers(p->connmgr, controllers, n_controllers, |
525 | allowed_versions); | |
064af421 BP |
526 | } |
527 | ||
31681a5d JP |
528 | void |
529 | ofproto_set_fail_mode(struct ofproto *p, enum ofproto_fail_mode fail_mode) | |
530 | { | |
19a87e36 | 531 | connmgr_set_fail_mode(p->connmgr, fail_mode); |
31681a5d JP |
532 | } |
533 | ||
fa05809b BP |
534 | /* Drops the connections between 'ofproto' and all of its controllers, forcing |
535 | * them to reconnect. */ | |
536 | void | |
537 | ofproto_reconnect_controllers(struct ofproto *ofproto) | |
538 | { | |
19a87e36 | 539 | connmgr_reconnect(ofproto->connmgr); |
917e50e1 BP |
540 | } |
541 | ||
542 | /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s | |
543 | * in-band control should guarantee access, in the same way that in-band | |
544 | * control guarantees access to OpenFlow controllers. */ | |
545 | void | |
546 | ofproto_set_extra_in_band_remotes(struct ofproto *ofproto, | |
547 | const struct sockaddr_in *extras, size_t n) | |
548 | { | |
19a87e36 | 549 | connmgr_set_extra_in_band_remotes(ofproto->connmgr, extras, n); |
917e50e1 BP |
550 | } |
551 | ||
b1da6250 BP |
552 | /* Sets the OpenFlow queue used by flows set up by in-band control on |
553 | * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control | |
554 | * flows will use the default queue. */ | |
555 | void | |
556 | ofproto_set_in_band_queue(struct ofproto *ofproto, int queue_id) | |
557 | { | |
19a87e36 | 558 | connmgr_set_in_band_queue(ofproto->connmgr, queue_id); |
b1da6250 BP |
559 | } |
560 | ||
084f5290 SH |
561 | /* Sets the number of flows at which eviction from the kernel flow table |
562 | * will occur. */ | |
563 | void | |
564 | ofproto_set_flow_eviction_threshold(struct ofproto *ofproto, unsigned threshold) | |
565 | { | |
566 | if (threshold < OFPROTO_FLOW_EVICTION_THRESHOLD_MIN) { | |
567 | ofproto->flow_eviction_threshold = OFPROTO_FLOW_EVICTION_THRESHOLD_MIN; | |
568 | } else { | |
569 | ofproto->flow_eviction_threshold = threshold; | |
570 | } | |
571 | } | |
572 | ||
b53055f4 | 573 | /* If forward_bpdu is true, the NORMAL action will forward frames with |
8402c74b SS |
574 | * reserved (e.g. STP) destination Ethernet addresses. if forward_bpdu is false, |
575 | * the NORMAL action will drop these frames. */ | |
576 | void | |
577 | ofproto_set_forward_bpdu(struct ofproto *ofproto, bool forward_bpdu) | |
578 | { | |
579 | bool old_val = ofproto->forward_bpdu; | |
580 | ofproto->forward_bpdu = forward_bpdu; | |
581 | if (old_val != ofproto->forward_bpdu) { | |
582 | if (ofproto->ofproto_class->forward_bpdu_changed) { | |
583 | ofproto->ofproto_class->forward_bpdu_changed(ofproto); | |
584 | } | |
b53055f4 | 585 | } |
8402c74b SS |
586 | } |
587 | ||
e764773c | 588 | /* Sets the MAC aging timeout for the OFPP_NORMAL action on 'ofproto' to |
c4069512 BP |
589 | * 'idle_time', in seconds, and the maximum number of MAC table entries to |
590 | * 'max_entries'. */ | |
e764773c | 591 | void |
c4069512 BP |
592 | ofproto_set_mac_table_config(struct ofproto *ofproto, unsigned idle_time, |
593 | size_t max_entries) | |
e764773c | 594 | { |
c4069512 BP |
595 | if (ofproto->ofproto_class->set_mac_table_config) { |
596 | ofproto->ofproto_class->set_mac_table_config(ofproto, idle_time, | |
597 | max_entries); | |
e764773c BP |
598 | } |
599 | } | |
600 | ||
8b6ff729 BP |
601 | void |
602 | ofproto_set_dp_desc(struct ofproto *p, const char *dp_desc) | |
603 | { | |
604 | free(p->dp_desc); | |
605 | p->dp_desc = dp_desc ? xstrdup(dp_desc) : NULL; | |
606 | } | |
607 | ||
064af421 | 608 | int |
81e2083f | 609 | ofproto_set_snoops(struct ofproto *ofproto, const struct sset *snoops) |
064af421 | 610 | { |
19a87e36 | 611 | return connmgr_set_snoops(ofproto->connmgr, snoops); |
064af421 BP |
612 | } |
613 | ||
614 | int | |
0193b2af JG |
615 | ofproto_set_netflow(struct ofproto *ofproto, |
616 | const struct netflow_options *nf_options) | |
064af421 | 617 | { |
abe529af BP |
618 | if (nf_options && sset_is_empty(&nf_options->collectors)) { |
619 | nf_options = NULL; | |
620 | } | |
621 | ||
622 | if (ofproto->ofproto_class->set_netflow) { | |
623 | return ofproto->ofproto_class->set_netflow(ofproto, nf_options); | |
064af421 | 624 | } else { |
abe529af | 625 | return nf_options ? EOPNOTSUPP : 0; |
064af421 BP |
626 | } |
627 | } | |
628 | ||
abe529af | 629 | int |
72b06300 BP |
630 | ofproto_set_sflow(struct ofproto *ofproto, |
631 | const struct ofproto_sflow_options *oso) | |
632 | { | |
abe529af BP |
633 | if (oso && sset_is_empty(&oso->targets)) { |
634 | oso = NULL; | |
635 | } | |
72b06300 | 636 | |
abe529af BP |
637 | if (ofproto->ofproto_class->set_sflow) { |
638 | return ofproto->ofproto_class->set_sflow(ofproto, oso); | |
72b06300 | 639 | } else { |
abe529af | 640 | return oso ? EOPNOTSUPP : 0; |
72b06300 BP |
641 | } |
642 | } | |
29089a54 RL |
643 | |
644 | int | |
645 | ofproto_set_ipfix(struct ofproto *ofproto, | |
646 | const struct ofproto_ipfix_bridge_exporter_options *bo, | |
647 | const struct ofproto_ipfix_flow_exporter_options *fo, | |
648 | size_t n_fo) | |
649 | { | |
650 | if (ofproto->ofproto_class->set_ipfix) { | |
651 | return ofproto->ofproto_class->set_ipfix(ofproto, bo, fo, n_fo); | |
652 | } else { | |
653 | return (bo || fo) ? EOPNOTSUPP : 0; | |
654 | } | |
655 | } | |
e7934396 | 656 | \f |
21f7563c JP |
657 | /* Spanning Tree Protocol (STP) configuration. */ |
658 | ||
659 | /* Configures STP on 'ofproto' using the settings defined in 's'. If | |
660 | * 's' is NULL, disables STP. | |
661 | * | |
662 | * Returns 0 if successful, otherwise a positive errno value. */ | |
663 | int | |
664 | ofproto_set_stp(struct ofproto *ofproto, | |
665 | const struct ofproto_stp_settings *s) | |
666 | { | |
667 | return (ofproto->ofproto_class->set_stp | |
668 | ? ofproto->ofproto_class->set_stp(ofproto, s) | |
669 | : EOPNOTSUPP); | |
670 | } | |
671 | ||
672 | /* Retrieves STP status of 'ofproto' and stores it in 's'. If the | |
673 | * 'enabled' member of 's' is false, then the other members are not | |
674 | * meaningful. | |
675 | * | |
676 | * Returns 0 if successful, otherwise a positive errno value. */ | |
677 | int | |
678 | ofproto_get_stp_status(struct ofproto *ofproto, | |
679 | struct ofproto_stp_status *s) | |
680 | { | |
681 | return (ofproto->ofproto_class->get_stp_status | |
682 | ? ofproto->ofproto_class->get_stp_status(ofproto, s) | |
683 | : EOPNOTSUPP); | |
684 | } | |
685 | ||
686 | /* Configures STP on 'ofp_port' of 'ofproto' using the settings defined | |
687 | * in 's'. The caller is responsible for assigning STP port numbers | |
688 | * (using the 'port_num' member in the range of 1 through 255, inclusive) | |
689 | * and ensuring there are no duplicates. If the 's' is NULL, then STP | |
690 | * is disabled on the port. | |
691 | * | |
692 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
693 | int | |
694 | ofproto_port_set_stp(struct ofproto *ofproto, uint16_t ofp_port, | |
695 | const struct ofproto_port_stp_settings *s) | |
696 | { | |
697 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
698 | if (!ofport) { | |
699 | VLOG_WARN("%s: cannot configure STP on nonexistent port %"PRIu16, | |
700 | ofproto->name, ofp_port); | |
701 | return ENODEV; | |
702 | } | |
703 | ||
704 | return (ofproto->ofproto_class->set_stp_port | |
705 | ? ofproto->ofproto_class->set_stp_port(ofport, s) | |
706 | : EOPNOTSUPP); | |
707 | } | |
708 | ||
709 | /* Retrieves STP port status of 'ofp_port' on 'ofproto' and stores it in | |
710 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
711 | * are not meaningful. | |
712 | * | |
713 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
714 | int | |
715 | ofproto_port_get_stp_status(struct ofproto *ofproto, uint16_t ofp_port, | |
716 | struct ofproto_port_stp_status *s) | |
717 | { | |
718 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
719 | if (!ofport) { | |
b0a5c43b JP |
720 | VLOG_WARN_RL(&rl, "%s: cannot get STP status on nonexistent " |
721 | "port %"PRIu16, ofproto->name, ofp_port); | |
21f7563c JP |
722 | return ENODEV; |
723 | } | |
724 | ||
725 | return (ofproto->ofproto_class->get_stp_port_status | |
726 | ? ofproto->ofproto_class->get_stp_port_status(ofport, s) | |
727 | : EOPNOTSUPP); | |
728 | } | |
729 | \f | |
8b36f51e EJ |
730 | /* Queue DSCP configuration. */ |
731 | ||
732 | /* Registers meta-data associated with the 'n_qdscp' Qualities of Service | |
733 | * 'queues' attached to 'ofport'. This data is not intended to be sufficient | |
734 | * to implement QoS. Instead, it is used to implement features which require | |
735 | * knowledge of what queues exist on a port, and some basic information about | |
736 | * them. | |
737 | * | |
738 | * Returns 0 if successful, otherwise a positive errno value. */ | |
739 | int | |
740 | ofproto_port_set_queues(struct ofproto *ofproto, uint16_t ofp_port, | |
741 | const struct ofproto_port_queue *queues, | |
742 | size_t n_queues) | |
743 | { | |
744 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
745 | ||
746 | if (!ofport) { | |
747 | VLOG_WARN("%s: cannot set queues on nonexistent port %"PRIu16, | |
748 | ofproto->name, ofp_port); | |
749 | return ENODEV; | |
750 | } | |
751 | ||
752 | return (ofproto->ofproto_class->set_queues | |
753 | ? ofproto->ofproto_class->set_queues(ofport, queues, n_queues) | |
754 | : EOPNOTSUPP); | |
755 | } | |
756 | \f | |
e7934396 BP |
757 | /* Connectivity Fault Management configuration. */ |
758 | ||
892815f5 | 759 | /* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */ |
e7934396 | 760 | void |
892815f5 | 761 | ofproto_port_clear_cfm(struct ofproto *ofproto, uint16_t ofp_port) |
e7934396 | 762 | { |
abe529af BP |
763 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
764 | if (ofport && ofproto->ofproto_class->set_cfm) { | |
a5610457 | 765 | ofproto->ofproto_class->set_cfm(ofport, NULL); |
e7934396 BP |
766 | } |
767 | } | |
72b06300 | 768 | |
892815f5 | 769 | /* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes |
93b8df38 EJ |
770 | * basic configuration from the configuration members in 'cfm', and the remote |
771 | * maintenance point ID from remote_mpid. Ignores the statistics members of | |
772 | * 'cfm'. | |
e7934396 | 773 | * |
892815f5 | 774 | * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */ |
e7934396 | 775 | void |
892815f5 | 776 | ofproto_port_set_cfm(struct ofproto *ofproto, uint16_t ofp_port, |
a5610457 | 777 | const struct cfm_settings *s) |
e7934396 BP |
778 | { |
779 | struct ofport *ofport; | |
abe529af | 780 | int error; |
e7934396 | 781 | |
abe529af | 782 | ofport = ofproto_get_port(ofproto, ofp_port); |
e7934396 | 783 | if (!ofport) { |
892815f5 BP |
784 | VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16, |
785 | ofproto->name, ofp_port); | |
e7934396 BP |
786 | return; |
787 | } | |
788 | ||
93b8df38 EJ |
789 | /* XXX: For configuration simplicity, we only support one remote_mpid |
790 | * outside of the CFM module. It's not clear if this is the correct long | |
791 | * term solution or not. */ | |
abe529af | 792 | error = (ofproto->ofproto_class->set_cfm |
a5610457 | 793 | ? ofproto->ofproto_class->set_cfm(ofport, s) |
abe529af BP |
794 | : EOPNOTSUPP); |
795 | if (error) { | |
796 | VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed (%s)", | |
797 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
798 | strerror(error)); | |
e7934396 | 799 | } |
e7934396 | 800 | } |
e7934396 | 801 | |
ccc09689 EJ |
802 | /* Configures BFD on 'ofp_port' in 'ofproto'. This function has no effect if |
803 | * 'ofproto' does not have a port 'ofp_port'. */ | |
804 | void | |
805 | ofproto_port_set_bfd(struct ofproto *ofproto, uint16_t ofp_port, | |
806 | const struct smap *cfg) | |
807 | { | |
808 | struct ofport *ofport; | |
809 | int error; | |
810 | ||
811 | ofport = ofproto_get_port(ofproto, ofp_port); | |
812 | if (!ofport) { | |
813 | VLOG_WARN("%s: cannot configure bfd on nonexistent port %"PRIu16, | |
814 | ofproto->name, ofp_port); | |
815 | } | |
816 | ||
817 | error = (ofproto->ofproto_class->set_bfd | |
818 | ? ofproto->ofproto_class->set_bfd(ofport, cfg) | |
819 | : EOPNOTSUPP); | |
820 | if (error) { | |
821 | VLOG_WARN("%s: bfd configuration on port %"PRIu16" (%s) failed (%s)", | |
822 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
823 | strerror(error)); | |
824 | } | |
825 | } | |
826 | ||
827 | /* Populates 'status' with key value pairs indicating the status of the BFD | |
828 | * session on 'ofp_port'. This information is intended to be populated in the | |
829 | * OVS database. Has no effect if 'ofp_port' is not na OpenFlow port in | |
830 | * 'ofproto'. */ | |
831 | int | |
832 | ofproto_port_get_bfd_status(struct ofproto *ofproto, uint16_t ofp_port, | |
833 | struct smap *status) | |
834 | { | |
835 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
836 | return (ofport && ofproto->ofproto_class->get_bfd_status | |
837 | ? ofproto->ofproto_class->get_bfd_status(ofport, status) | |
838 | : EOPNOTSUPP); | |
839 | } | |
840 | ||
fa066f01 BP |
841 | /* Checks the status of LACP negotiation for 'ofp_port' within ofproto. |
842 | * Returns 1 if LACP partner information for 'ofp_port' is up-to-date, | |
843 | * 0 if LACP partner information is not current (generally indicating a | |
844 | * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */ | |
845 | int | |
846 | ofproto_port_is_lacp_current(struct ofproto *ofproto, uint16_t ofp_port) | |
847 | { | |
abe529af BP |
848 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
849 | return (ofport && ofproto->ofproto_class->port_is_lacp_current | |
850 | ? ofproto->ofproto_class->port_is_lacp_current(ofport) | |
fa066f01 | 851 | : -1); |
e7934396 | 852 | } |
e7934396 | 853 | \f |
fa066f01 | 854 | /* Bundles. */ |
e7934396 | 855 | |
abe529af BP |
856 | /* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'. |
857 | * A bundle is the same concept as a Port in OVSDB, that is, it consists of one | |
858 | * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN | |
859 | * configuration plus, if there is more than one slave, a bonding | |
860 | * configuration. | |
861 | * | |
862 | * If 'aux' is already registered then this function updates its configuration | |
863 | * to 's'. Otherwise, this function registers a new bundle. | |
864 | * | |
865 | * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL | |
866 | * port. */ | |
867 | int | |
868 | ofproto_bundle_register(struct ofproto *ofproto, void *aux, | |
869 | const struct ofproto_bundle_settings *s) | |
fa066f01 | 870 | { |
abe529af BP |
871 | return (ofproto->ofproto_class->bundle_set |
872 | ? ofproto->ofproto_class->bundle_set(ofproto, aux, s) | |
873 | : EOPNOTSUPP); | |
fa066f01 BP |
874 | } |
875 | ||
abe529af BP |
876 | /* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'. |
877 | * If no such bundle has been registered, this has no effect. */ | |
878 | int | |
879 | ofproto_bundle_unregister(struct ofproto *ofproto, void *aux) | |
e7934396 | 880 | { |
abe529af | 881 | return ofproto_bundle_register(ofproto, aux, NULL); |
e7934396 | 882 | } |
fa066f01 | 883 | |
e7934396 | 884 | \f |
abe529af BP |
885 | /* Registers a mirror associated with client data pointer 'aux' in 'ofproto'. |
886 | * If 'aux' is already registered then this function updates its configuration | |
c06bba01 | 887 | * to 's'. Otherwise, this function registers a new mirror. */ |
abe529af BP |
888 | int |
889 | ofproto_mirror_register(struct ofproto *ofproto, void *aux, | |
890 | const struct ofproto_mirror_settings *s) | |
064af421 | 891 | { |
abe529af BP |
892 | return (ofproto->ofproto_class->mirror_set |
893 | ? ofproto->ofproto_class->mirror_set(ofproto, aux, s) | |
894 | : EOPNOTSUPP); | |
064af421 BP |
895 | } |
896 | ||
abe529af BP |
897 | /* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'. |
898 | * If no mirror has been registered, this has no effect. */ | |
899 | int | |
900 | ofproto_mirror_unregister(struct ofproto *ofproto, void *aux) | |
064af421 | 901 | { |
abe529af | 902 | return ofproto_mirror_register(ofproto, aux, NULL); |
064af421 BP |
903 | } |
904 | ||
9d24de3b JP |
905 | /* Retrieves statistics from mirror associated with client data pointer |
906 | * 'aux' in 'ofproto'. Stores packet and byte counts in 'packets' and | |
907 | * 'bytes', respectively. If a particular counters is not supported, | |
908 | * the appropriate argument is set to UINT64_MAX. */ | |
909 | int | |
910 | ofproto_mirror_get_stats(struct ofproto *ofproto, void *aux, | |
911 | uint64_t *packets, uint64_t *bytes) | |
912 | { | |
913 | if (!ofproto->ofproto_class->mirror_get_stats) { | |
914 | *packets = *bytes = UINT64_MAX; | |
915 | return EOPNOTSUPP; | |
916 | } | |
917 | ||
918 | return ofproto->ofproto_class->mirror_get_stats(ofproto, aux, | |
919 | packets, bytes); | |
920 | } | |
921 | ||
abe529af BP |
922 | /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on |
923 | * which all packets are flooded, instead of using MAC learning. If | |
924 | * 'flood_vlans' is NULL, then MAC learning applies to all VLANs. | |
925 | * | |
926 | * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL | |
927 | * port. */ | |
928 | int | |
929 | ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans) | |
abdfe474 | 930 | { |
abe529af BP |
931 | return (ofproto->ofproto_class->set_flood_vlans |
932 | ? ofproto->ofproto_class->set_flood_vlans(ofproto, flood_vlans) | |
933 | : EOPNOTSUPP); | |
abdfe474 JP |
934 | } |
935 | ||
abe529af BP |
936 | /* Returns true if 'aux' is a registered bundle that is currently in use as the |
937 | * output for a mirror. */ | |
938 | bool | |
b4affc74 | 939 | ofproto_is_mirror_output_bundle(const struct ofproto *ofproto, void *aux) |
abe529af BP |
940 | { |
941 | return (ofproto->ofproto_class->is_mirror_output_bundle | |
942 | ? ofproto->ofproto_class->is_mirror_output_bundle(ofproto, aux) | |
943 | : false); | |
944 | } | |
945 | \f | |
254750ce BP |
946 | /* Configuration of OpenFlow tables. */ |
947 | ||
948 | /* Returns the number of OpenFlow tables in 'ofproto'. */ | |
949 | int | |
950 | ofproto_get_n_tables(const struct ofproto *ofproto) | |
951 | { | |
952 | return ofproto->n_tables; | |
953 | } | |
954 | ||
955 | /* Configures the OpenFlow table in 'ofproto' with id 'table_id' with the | |
956 | * settings from 's'. 'table_id' must be in the range 0 through the number of | |
957 | * OpenFlow tables in 'ofproto' minus 1, inclusive. | |
958 | * | |
959 | * For read-only tables, only the name may be configured. */ | |
960 | void | |
961 | ofproto_configure_table(struct ofproto *ofproto, int table_id, | |
962 | const struct ofproto_table_settings *s) | |
963 | { | |
964 | struct oftable *table; | |
965 | ||
cb22974d | 966 | ovs_assert(table_id >= 0 && table_id < ofproto->n_tables); |
254750ce BP |
967 | table = &ofproto->tables[table_id]; |
968 | ||
969 | oftable_set_name(table, s->name); | |
970 | ||
971 | if (table->flags & OFTABLE_READONLY) { | |
972 | return; | |
973 | } | |
974 | ||
975 | if (s->groups) { | |
976 | oftable_enable_eviction(table, s->groups, s->n_groups); | |
977 | } else { | |
978 | oftable_disable_eviction(table); | |
979 | } | |
980 | ||
981 | table->max_flows = s->max_flows; | |
982 | if (classifier_count(&table->cls) > table->max_flows | |
983 | && table->eviction_fields) { | |
984 | /* 'table' contains more flows than allowed. We might not be able to | |
985 | * evict them right away because of the asynchronous nature of flow | |
986 | * table changes. Schedule eviction for later. */ | |
987 | switch (ofproto->state) { | |
988 | case S_OPENFLOW: | |
989 | ofproto->state = S_EVICT; | |
990 | break; | |
991 | case S_EVICT: | |
992 | case S_FLUSH: | |
993 | /* We're already deleting flows, nothing more to do. */ | |
994 | break; | |
995 | } | |
996 | } | |
997 | } | |
998 | \f | |
81e2083f BP |
999 | bool |
1000 | ofproto_has_snoops(const struct ofproto *ofproto) | |
1001 | { | |
1002 | return connmgr_has_snoops(ofproto->connmgr); | |
1003 | } | |
1004 | ||
064af421 | 1005 | void |
81e2083f | 1006 | ofproto_get_snoops(const struct ofproto *ofproto, struct sset *snoops) |
064af421 | 1007 | { |
19a87e36 | 1008 | connmgr_get_snoops(ofproto->connmgr, snoops); |
064af421 BP |
1009 | } |
1010 | ||
7ee20df1 BP |
1011 | static void |
1012 | ofproto_flush__(struct ofproto *ofproto) | |
1013 | { | |
7ee20df1 | 1014 | struct ofopgroup *group; |
d0918789 | 1015 | struct oftable *table; |
7ee20df1 BP |
1016 | |
1017 | if (ofproto->ofproto_class->flush) { | |
1018 | ofproto->ofproto_class->flush(ofproto); | |
1019 | } | |
1020 | ||
7024dffe | 1021 | group = ofopgroup_create_unattached(ofproto); |
b772ded8 | 1022 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
7ee20df1 BP |
1023 | struct rule *rule, *next_rule; |
1024 | struct cls_cursor cursor; | |
1025 | ||
5c67e4af BP |
1026 | if (table->flags & OFTABLE_HIDDEN) { |
1027 | continue; | |
1028 | } | |
1029 | ||
d0918789 | 1030 | cls_cursor_init(&cursor, &table->cls, NULL); |
7ee20df1 BP |
1031 | CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) { |
1032 | if (!rule->pending) { | |
2b07c8b1 BP |
1033 | ofoperation_create(group, rule, OFOPERATION_DELETE, |
1034 | OFPRR_DELETE); | |
d0918789 | 1035 | oftable_remove_rule(rule); |
7ee20df1 BP |
1036 | ofproto->ofproto_class->rule_destruct(rule); |
1037 | } | |
1038 | } | |
1039 | } | |
1040 | ofopgroup_submit(group); | |
1041 | } | |
1042 | ||
abe529af BP |
1043 | static void |
1044 | ofproto_destroy__(struct ofproto *ofproto) | |
1045 | { | |
d0918789 | 1046 | struct oftable *table; |
6c1491fb | 1047 | |
cb22974d BP |
1048 | ovs_assert(list_is_empty(&ofproto->pending)); |
1049 | ovs_assert(!ofproto->n_pending); | |
7ee20df1 | 1050 | |
abe529af | 1051 | connmgr_destroy(ofproto->connmgr); |
fa066f01 | 1052 | |
abe529af BP |
1053 | hmap_remove(&all_ofprotos, &ofproto->hmap_node); |
1054 | free(ofproto->name); | |
955a7127 | 1055 | free(ofproto->type); |
abe529af BP |
1056 | free(ofproto->mfr_desc); |
1057 | free(ofproto->hw_desc); | |
1058 | free(ofproto->sw_desc); | |
1059 | free(ofproto->serial_desc); | |
1060 | free(ofproto->dp_desc); | |
abe529af BP |
1061 | hmap_destroy(&ofproto->ports); |
1062 | shash_destroy(&ofproto->port_by_name); | |
e1b1d06a JP |
1063 | bitmap_free(ofproto->ofp_port_ids); |
1064 | simap_destroy(&ofproto->ofp_requests); | |
6c1491fb | 1065 | |
b772ded8 | 1066 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
d0918789 | 1067 | oftable_destroy(table); |
6c1491fb BP |
1068 | } |
1069 | free(ofproto->tables); | |
fa066f01 | 1070 | |
7ee20df1 BP |
1071 | hmap_destroy(&ofproto->deletions); |
1072 | ||
52a90c29 BP |
1073 | free(ofproto->vlan_bitmap); |
1074 | ||
abe529af BP |
1075 | ofproto->ofproto_class->dealloc(ofproto); |
1076 | } | |
fa066f01 | 1077 | |
064af421 BP |
1078 | void |
1079 | ofproto_destroy(struct ofproto *p) | |
1080 | { | |
ca0f572c | 1081 | struct ofport *ofport, *next_ofport; |
064af421 BP |
1082 | |
1083 | if (!p) { | |
1084 | return; | |
1085 | } | |
1086 | ||
7ee20df1 | 1087 | ofproto_flush__(p); |
4e8e4213 | 1088 | HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) { |
abe529af | 1089 | ofport_destroy(ofport); |
064af421 | 1090 | } |
064af421 | 1091 | |
abe529af BP |
1092 | p->ofproto_class->destruct(p); |
1093 | ofproto_destroy__(p); | |
064af421 BP |
1094 | } |
1095 | ||
abe529af BP |
1096 | /* Destroys the datapath with the respective 'name' and 'type'. With the Linux |
1097 | * kernel datapath, for example, this destroys the datapath in the kernel, and | |
1098 | * with the netdev-based datapath, it tears down the data structures that | |
1099 | * represent the datapath. | |
1100 | * | |
1101 | * The datapath should not be currently open as an ofproto. */ | |
064af421 | 1102 | int |
abe529af | 1103 | ofproto_delete(const char *name, const char *type) |
064af421 | 1104 | { |
abe529af BP |
1105 | const struct ofproto_class *class = ofproto_class_find__(type); |
1106 | return (!class ? EAFNOSUPPORT | |
1107 | : !class->del ? EACCES | |
1108 | : class->del(type, name)); | |
064af421 BP |
1109 | } |
1110 | ||
e9e28be3 BP |
1111 | static void |
1112 | process_port_change(struct ofproto *ofproto, int error, char *devname) | |
1113 | { | |
1114 | if (error == ENOBUFS) { | |
1115 | reinit_ports(ofproto); | |
1116 | } else if (!error) { | |
1117 | update_port(ofproto, devname); | |
1118 | free(devname); | |
1119 | } | |
1120 | } | |
1121 | ||
11a574a7 JP |
1122 | int |
1123 | ofproto_type_run(const char *datapath_type) | |
1124 | { | |
1125 | const struct ofproto_class *class; | |
1126 | int error; | |
1127 | ||
1128 | datapath_type = ofproto_normalize_type(datapath_type); | |
1129 | class = ofproto_class_find__(datapath_type); | |
1130 | ||
1131 | error = class->type_run ? class->type_run(datapath_type) : 0; | |
1132 | if (error && error != EAGAIN) { | |
1133 | VLOG_ERR_RL(&rl, "%s: type_run failed (%s)", | |
1134 | datapath_type, strerror(error)); | |
1135 | } | |
1136 | return error; | |
1137 | } | |
1138 | ||
1139 | int | |
1140 | ofproto_type_run_fast(const char *datapath_type) | |
1141 | { | |
1142 | const struct ofproto_class *class; | |
1143 | int error; | |
1144 | ||
1145 | datapath_type = ofproto_normalize_type(datapath_type); | |
1146 | class = ofproto_class_find__(datapath_type); | |
1147 | ||
1148 | error = class->type_run_fast ? class->type_run_fast(datapath_type) : 0; | |
1149 | if (error && error != EAGAIN) { | |
1150 | VLOG_ERR_RL(&rl, "%s: type_run_fast failed (%s)", | |
1151 | datapath_type, strerror(error)); | |
1152 | } | |
1153 | return error; | |
1154 | } | |
1155 | ||
1156 | void | |
1157 | ofproto_type_wait(const char *datapath_type) | |
1158 | { | |
1159 | const struct ofproto_class *class; | |
1160 | ||
1161 | datapath_type = ofproto_normalize_type(datapath_type); | |
1162 | class = ofproto_class_find__(datapath_type); | |
1163 | ||
1164 | if (class->type_wait) { | |
1165 | class->type_wait(datapath_type); | |
1166 | } | |
1167 | } | |
1168 | ||
064af421 | 1169 | int |
abe529af | 1170 | ofproto_run(struct ofproto *p) |
064af421 | 1171 | { |
7436ed80 BP |
1172 | struct sset changed_netdevs; |
1173 | const char *changed_netdev; | |
031d8bff | 1174 | struct ofport *ofport; |
064af421 | 1175 | int error; |
064af421 | 1176 | |
abe529af | 1177 | error = p->ofproto_class->run(p); |
5fcc0d00 BP |
1178 | if (error && error != EAGAIN) { |
1179 | VLOG_ERR_RL(&rl, "%s: run failed (%s)", p->name, strerror(error)); | |
149f577a JG |
1180 | } |
1181 | ||
5bf0e941 | 1182 | if (p->ofproto_class->port_poll) { |
7436ed80 BP |
1183 | char *devname; |
1184 | ||
5bf0e941 BP |
1185 | while ((error = p->ofproto_class->port_poll(p, &devname)) != EAGAIN) { |
1186 | process_port_change(p, error, devname); | |
064af421 | 1187 | } |
e9e28be3 | 1188 | } |
031d8bff | 1189 | |
7436ed80 BP |
1190 | /* Update OpenFlow port status for any port whose netdev has changed. |
1191 | * | |
1192 | * Refreshing a given 'ofport' can cause an arbitrary ofport to be | |
1193 | * destroyed, so it's not safe to update ports directly from the | |
1194 | * HMAP_FOR_EACH loop, or even to use HMAP_FOR_EACH_SAFE. Instead, we | |
1195 | * need this two-phase approach. */ | |
1196 | sset_init(&changed_netdevs); | |
031d8bff EJ |
1197 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { |
1198 | unsigned int change_seq = netdev_change_seq(ofport->netdev); | |
1199 | if (ofport->change_seq != change_seq) { | |
1200 | ofport->change_seq = change_seq; | |
7436ed80 | 1201 | sset_add(&changed_netdevs, netdev_get_name(ofport->netdev)); |
031d8bff | 1202 | } |
064af421 | 1203 | } |
7436ed80 BP |
1204 | SSET_FOR_EACH (changed_netdev, &changed_netdevs) { |
1205 | update_port(p, changed_netdev); | |
1206 | } | |
1207 | sset_destroy(&changed_netdevs); | |
064af421 | 1208 | |
7ee20df1 BP |
1209 | switch (p->state) { |
1210 | case S_OPENFLOW: | |
1211 | connmgr_run(p->connmgr, handle_openflow); | |
1212 | break; | |
1213 | ||
254750ce BP |
1214 | case S_EVICT: |
1215 | connmgr_run(p->connmgr, NULL); | |
1216 | ofproto_evict(p); | |
1217 | if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) { | |
1218 | p->state = S_OPENFLOW; | |
1219 | } | |
1220 | break; | |
1221 | ||
7ee20df1 BP |
1222 | case S_FLUSH: |
1223 | connmgr_run(p->connmgr, NULL); | |
1224 | ofproto_flush__(p); | |
1225 | if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) { | |
1226 | connmgr_flushed(p->connmgr); | |
1227 | p->state = S_OPENFLOW; | |
1228 | } | |
1229 | break; | |
1230 | ||
1231 | default: | |
1232 | NOT_REACHED(); | |
1233 | } | |
064af421 | 1234 | |
a5b8d268 BP |
1235 | if (time_msec() >= p->next_op_report) { |
1236 | long long int ago = (time_msec() - p->first_op) / 1000; | |
1237 | long long int interval = (p->last_op - p->first_op) / 1000; | |
1238 | struct ds s; | |
1239 | ||
1240 | ds_init(&s); | |
1241 | ds_put_format(&s, "%d flow_mods ", | |
1242 | p->n_add + p->n_delete + p->n_modify); | |
1243 | if (interval == ago) { | |
1244 | ds_put_format(&s, "in the last %lld s", ago); | |
1245 | } else if (interval) { | |
1246 | ds_put_format(&s, "in the %lld s starting %lld s ago", | |
1247 | interval, ago); | |
1248 | } else { | |
1249 | ds_put_format(&s, "%lld s ago", ago); | |
1250 | } | |
1251 | ||
1252 | ds_put_cstr(&s, " ("); | |
1253 | if (p->n_add) { | |
1254 | ds_put_format(&s, "%d adds, ", p->n_add); | |
1255 | } | |
1256 | if (p->n_delete) { | |
1257 | ds_put_format(&s, "%d deletes, ", p->n_delete); | |
1258 | } | |
1259 | if (p->n_modify) { | |
1260 | ds_put_format(&s, "%d modifications, ", p->n_modify); | |
1261 | } | |
1262 | s.length -= 2; | |
1263 | ds_put_char(&s, ')'); | |
1264 | ||
fbfa2911 | 1265 | VLOG_INFO("%s: %s", p->name, ds_cstr(&s)); |
a5b8d268 BP |
1266 | ds_destroy(&s); |
1267 | ||
1268 | p->n_add = p->n_delete = p->n_modify = 0; | |
1269 | p->next_op_report = LLONG_MAX; | |
1270 | } | |
1271 | ||
5fcc0d00 BP |
1272 | return error; |
1273 | } | |
1274 | ||
1275 | /* Performs periodic activity required by 'ofproto' that needs to be done | |
1276 | * with the least possible latency. | |
1277 | * | |
1278 | * It makes sense to call this function a couple of times per poll loop, to | |
1279 | * provide a significant performance boost on some benchmarks with the | |
1280 | * ofproto-dpif implementation. */ | |
1281 | int | |
1282 | ofproto_run_fast(struct ofproto *p) | |
1283 | { | |
1284 | int error; | |
1285 | ||
1286 | error = p->ofproto_class->run_fast ? p->ofproto_class->run_fast(p) : 0; | |
1287 | if (error && error != EAGAIN) { | |
1288 | VLOG_ERR_RL(&rl, "%s: fastpath run failed (%s)", | |
1289 | p->name, strerror(error)); | |
1290 | } | |
1291 | return error; | |
064af421 BP |
1292 | } |
1293 | ||
1294 | void | |
1295 | ofproto_wait(struct ofproto *p) | |
1296 | { | |
031d8bff EJ |
1297 | struct ofport *ofport; |
1298 | ||
abe529af | 1299 | p->ofproto_class->wait(p); |
5bf0e941 BP |
1300 | if (p->ofproto_class->port_poll_wait) { |
1301 | p->ofproto_class->port_poll_wait(p); | |
e7934396 | 1302 | } |
031d8bff EJ |
1303 | |
1304 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
1305 | if (ofport->change_seq != netdev_change_seq(ofport->netdev)) { | |
1306 | poll_immediate_wake(); | |
1307 | } | |
1308 | } | |
7ee20df1 BP |
1309 | |
1310 | switch (p->state) { | |
1311 | case S_OPENFLOW: | |
1312 | connmgr_wait(p->connmgr, true); | |
1313 | break; | |
1314 | ||
254750ce | 1315 | case S_EVICT: |
7ee20df1 BP |
1316 | case S_FLUSH: |
1317 | connmgr_wait(p->connmgr, false); | |
1318 | if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) { | |
1319 | poll_immediate_wake(); | |
1320 | } | |
1321 | break; | |
1322 | } | |
064af421 BP |
1323 | } |
1324 | ||
064af421 BP |
1325 | bool |
1326 | ofproto_is_alive(const struct ofproto *p) | |
1327 | { | |
19a87e36 | 1328 | return connmgr_has_controllers(p->connmgr); |
064af421 BP |
1329 | } |
1330 | ||
0d085684 BP |
1331 | /* Adds some memory usage statistics for 'ofproto' into 'usage', for use with |
1332 | * memory_report(). */ | |
1333 | void | |
1334 | ofproto_get_memory_usage(const struct ofproto *ofproto, struct simap *usage) | |
1335 | { | |
1336 | const struct oftable *table; | |
1337 | unsigned int n_rules; | |
1338 | ||
1339 | simap_increase(usage, "ports", hmap_count(&ofproto->ports)); | |
1340 | simap_increase(usage, "ops", | |
1341 | ofproto->n_pending + hmap_count(&ofproto->deletions)); | |
1342 | ||
1343 | n_rules = 0; | |
1344 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
1345 | n_rules += classifier_count(&table->cls); | |
1346 | } | |
1347 | simap_increase(usage, "rules", n_rules); | |
1348 | ||
1349 | if (ofproto->ofproto_class->get_memory_usage) { | |
1350 | ofproto->ofproto_class->get_memory_usage(ofproto, usage); | |
1351 | } | |
1352 | ||
1353 | connmgr_get_memory_usage(ofproto->connmgr, usage); | |
1354 | } | |
1355 | ||
bffc0589 | 1356 | void |
2cdcb898 | 1357 | ofproto_get_ofproto_controller_info(const struct ofproto *ofproto, |
bffc0589 AE |
1358 | struct shash *info) |
1359 | { | |
19a87e36 | 1360 | connmgr_get_controller_info(ofproto->connmgr, info); |
bffc0589 AE |
1361 | } |
1362 | ||
1363 | void | |
1364 | ofproto_free_ofproto_controller_info(struct shash *info) | |
1365 | { | |
72ba2ed3 | 1366 | connmgr_free_controller_info(info); |
bffc0589 AE |
1367 | } |
1368 | ||
b5827b24 BP |
1369 | /* Makes a deep copy of 'old' into 'port'. */ |
1370 | void | |
1371 | ofproto_port_clone(struct ofproto_port *port, const struct ofproto_port *old) | |
1372 | { | |
1373 | port->name = xstrdup(old->name); | |
1374 | port->type = xstrdup(old->type); | |
1375 | port->ofp_port = old->ofp_port; | |
1376 | } | |
1377 | ||
1378 | /* Frees memory allocated to members of 'ofproto_port'. | |
3a6ccc8c | 1379 | * |
b5827b24 BP |
1380 | * Do not call this function on an ofproto_port obtained from |
1381 | * ofproto_port_dump_next(): that function retains ownership of the data in the | |
1382 | * ofproto_port. */ | |
1383 | void | |
1384 | ofproto_port_destroy(struct ofproto_port *ofproto_port) | |
1385 | { | |
1386 | free(ofproto_port->name); | |
1387 | free(ofproto_port->type); | |
1388 | } | |
1389 | ||
b5827b24 | 1390 | /* Initializes 'dump' to begin dumping the ports in an ofproto. |
3a6ccc8c | 1391 | * |
b5827b24 BP |
1392 | * This function provides no status indication. An error status for the entire |
1393 | * dump operation is provided when it is completed by calling | |
1394 | * ofproto_port_dump_done(). | |
1395 | */ | |
1396 | void | |
1397 | ofproto_port_dump_start(struct ofproto_port_dump *dump, | |
1398 | const struct ofproto *ofproto) | |
1399 | { | |
abe529af BP |
1400 | dump->ofproto = ofproto; |
1401 | dump->error = ofproto->ofproto_class->port_dump_start(ofproto, | |
1402 | &dump->state); | |
b5827b24 BP |
1403 | } |
1404 | ||
1405 | /* Attempts to retrieve another port from 'dump', which must have been created | |
1406 | * with ofproto_port_dump_start(). On success, stores a new ofproto_port into | |
1407 | * 'port' and returns true. On failure, returns false. | |
1408 | * | |
1409 | * Failure might indicate an actual error or merely that the last port has been | |
1410 | * dumped. An error status for the entire dump operation is provided when it | |
1411 | * is completed by calling ofproto_port_dump_done(). | |
1412 | * | |
1413 | * The ofproto owns the data stored in 'port'. It will remain valid until at | |
1414 | * least the next time 'dump' is passed to ofproto_port_dump_next() or | |
1415 | * ofproto_port_dump_done(). */ | |
1416 | bool | |
1417 | ofproto_port_dump_next(struct ofproto_port_dump *dump, | |
1418 | struct ofproto_port *port) | |
1419 | { | |
abe529af BP |
1420 | const struct ofproto *ofproto = dump->ofproto; |
1421 | ||
1422 | if (dump->error) { | |
1423 | return false; | |
1424 | } | |
b5827b24 | 1425 | |
abe529af BP |
1426 | dump->error = ofproto->ofproto_class->port_dump_next(ofproto, dump->state, |
1427 | port); | |
1428 | if (dump->error) { | |
1429 | ofproto->ofproto_class->port_dump_done(ofproto, dump->state); | |
1430 | return false; | |
b5827b24 | 1431 | } |
abe529af | 1432 | return true; |
b5827b24 BP |
1433 | } |
1434 | ||
1435 | /* Completes port table dump operation 'dump', which must have been created | |
1436 | * with ofproto_port_dump_start(). Returns 0 if the dump operation was | |
1437 | * error-free, otherwise a positive errno value describing the problem. */ | |
3a6ccc8c | 1438 | int |
b5827b24 | 1439 | ofproto_port_dump_done(struct ofproto_port_dump *dump) |
3a6ccc8c | 1440 | { |
abe529af BP |
1441 | const struct ofproto *ofproto = dump->ofproto; |
1442 | if (!dump->error) { | |
1443 | dump->error = ofproto->ofproto_class->port_dump_done(ofproto, | |
1444 | dump->state); | |
1445 | } | |
1446 | return dump->error == EOF ? 0 : dump->error; | |
b5827b24 BP |
1447 | } |
1448 | ||
0aeaabc8 JP |
1449 | /* Returns the type to pass to netdev_open() when a datapath of type |
1450 | * 'datapath_type' has a port of type 'port_type', for a few special | |
1451 | * cases when a netdev type differs from a port type. For example, when | |
1452 | * using the userspace datapath, a port of type "internal" needs to be | |
1453 | * opened as "tap". | |
1454 | * | |
1455 | * Returns either 'type' itself or a string literal, which must not be | |
1456 | * freed. */ | |
1457 | const char * | |
1458 | ofproto_port_open_type(const char *datapath_type, const char *port_type) | |
1459 | { | |
1460 | const struct ofproto_class *class; | |
1461 | ||
1462 | datapath_type = ofproto_normalize_type(datapath_type); | |
1463 | class = ofproto_class_find__(datapath_type); | |
1464 | if (!class) { | |
1465 | return port_type; | |
1466 | } | |
1467 | ||
1468 | return (class->port_open_type | |
1469 | ? class->port_open_type(datapath_type, port_type) | |
1470 | : port_type); | |
1471 | } | |
1472 | ||
81816a5f JP |
1473 | /* Attempts to add 'netdev' as a port on 'ofproto'. If 'ofp_portp' is |
1474 | * non-null and '*ofp_portp' is not OFPP_NONE, attempts to use that as | |
1475 | * the port's OpenFlow port number. | |
1476 | * | |
1477 | * If successful, returns 0 and sets '*ofp_portp' to the new port's | |
1478 | * OpenFlow port number (if 'ofp_portp' is non-null). On failure, | |
1479 | * returns a positive errno value and sets '*ofp_portp' to OFPP_NONE (if | |
1480 | * 'ofp_portp' is non-null). */ | |
b5827b24 BP |
1481 | int |
1482 | ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev, | |
1483 | uint16_t *ofp_portp) | |
1484 | { | |
81816a5f | 1485 | uint16_t ofp_port = ofp_portp ? *ofp_portp : OFPP_NONE; |
3a6ccc8c BP |
1486 | int error; |
1487 | ||
e1b1d06a | 1488 | error = ofproto->ofproto_class->port_add(ofproto, netdev); |
1fa24dea | 1489 | if (!error) { |
e1b1d06a JP |
1490 | const char *netdev_name = netdev_get_name(netdev); |
1491 | ||
1492 | simap_put(&ofproto->ofp_requests, netdev_name, ofp_port); | |
1493 | update_port(ofproto, netdev_name); | |
1fa24dea | 1494 | } |
b5827b24 | 1495 | if (ofp_portp) { |
e1b1d06a JP |
1496 | struct ofproto_port ofproto_port; |
1497 | ||
1498 | ofproto_port_query_by_name(ofproto, netdev_get_name(netdev), | |
1499 | &ofproto_port); | |
1500 | *ofp_portp = error ? OFPP_NONE : ofproto_port.ofp_port; | |
1501 | ofproto_port_destroy(&ofproto_port); | |
3a6ccc8c BP |
1502 | } |
1503 | return error; | |
1504 | } | |
1505 | ||
b5827b24 BP |
1506 | /* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and |
1507 | * initializes '*port' appropriately; on failure, returns a positive errno | |
1508 | * value. | |
1509 | * | |
abe529af | 1510 | * The caller owns the data in 'ofproto_port' and must free it with |
b5827b24 BP |
1511 | * ofproto_port_destroy() when it is no longer needed. */ |
1512 | int | |
1513 | ofproto_port_query_by_name(const struct ofproto *ofproto, const char *devname, | |
1514 | struct ofproto_port *port) | |
a4e2e1f2 | 1515 | { |
b5827b24 BP |
1516 | int error; |
1517 | ||
abe529af BP |
1518 | error = ofproto->ofproto_class->port_query_by_name(ofproto, devname, port); |
1519 | if (error) { | |
1520 | memset(port, 0, sizeof *port); | |
b5827b24 BP |
1521 | } |
1522 | return error; | |
a4e2e1f2 EJ |
1523 | } |
1524 | ||
b5827b24 | 1525 | /* Deletes port number 'ofp_port' from the datapath for 'ofproto'. |
3a6ccc8c | 1526 | * Returns 0 if successful, otherwise a positive errno. */ |
064af421 | 1527 | int |
b5827b24 | 1528 | ofproto_port_del(struct ofproto *ofproto, uint16_t ofp_port) |
064af421 | 1529 | { |
abe529af | 1530 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1264ec95 | 1531 | const char *name = ofport ? netdev_get_name(ofport->netdev) : "<unknown>"; |
e1b1d06a | 1532 | struct simap_node *ofp_request_node; |
3cf10406 | 1533 | int error; |
cdee00fd | 1534 | |
e1b1d06a JP |
1535 | ofp_request_node = simap_find(&ofproto->ofp_requests, name); |
1536 | if (ofp_request_node) { | |
1537 | simap_delete(&ofproto->ofp_requests, ofp_request_node); | |
1538 | } | |
1539 | ||
abe529af | 1540 | error = ofproto->ofproto_class->port_del(ofproto, ofp_port); |
892815f5 | 1541 | if (!error && ofport) { |
1264ec95 BP |
1542 | /* 'name' is the netdev's name and update_port() is going to close the |
1543 | * netdev. Just in case update_port() refers to 'name' after it | |
3a6ccc8c BP |
1544 | * destroys 'ofport', make a copy of it around the update_port() |
1545 | * call. */ | |
1546 | char *devname = xstrdup(name); | |
1547 | update_port(ofproto, devname); | |
1548 | free(devname); | |
3cf10406 BP |
1549 | } |
1550 | return error; | |
064af421 BP |
1551 | } |
1552 | ||
6c1491fb | 1553 | /* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and |
fa8b054f BP |
1554 | * performs the 'n_actions' actions in 'actions'. The new flow will not |
1555 | * timeout. | |
1556 | * | |
1557 | * If cls_rule->priority is in the range of priorities supported by OpenFlow | |
1558 | * (0...65535, inclusive) then the flow will be visible to OpenFlow | |
1559 | * controllers; otherwise, it will be hidden. | |
1560 | * | |
f25d0cf3 | 1561 | * The caller retains ownership of 'cls_rule' and 'ofpacts'. |
6c1491fb BP |
1562 | * |
1563 | * This is a helper function for in-band control and fail-open. */ | |
064af421 | 1564 | void |
81a76618 BP |
1565 | ofproto_add_flow(struct ofproto *ofproto, const struct match *match, |
1566 | unsigned int priority, | |
f25d0cf3 | 1567 | const struct ofpact *ofpacts, size_t ofpacts_len) |
064af421 | 1568 | { |
7ee20df1 BP |
1569 | const struct rule *rule; |
1570 | ||
81a76618 BP |
1571 | rule = rule_from_cls_rule(classifier_find_match_exactly( |
1572 | &ofproto->tables[0].cls, match, priority)); | |
f25d0cf3 BP |
1573 | if (!rule || !ofpacts_equal(rule->ofpacts, rule->ofpacts_len, |
1574 | ofpacts, ofpacts_len)) { | |
a9a2da38 | 1575 | struct ofputil_flow_mod fm; |
7ee20df1 BP |
1576 | |
1577 | memset(&fm, 0, sizeof fm); | |
81a76618 BP |
1578 | fm.match = *match; |
1579 | fm.priority = priority; | |
7ee20df1 | 1580 | fm.buffer_id = UINT32_MAX; |
f25d0cf3 BP |
1581 | fm.ofpacts = xmemdup(ofpacts, ofpacts_len); |
1582 | fm.ofpacts_len = ofpacts_len; | |
7ee20df1 | 1583 | add_flow(ofproto, NULL, &fm, NULL); |
f25d0cf3 | 1584 | free(fm.ofpacts); |
7ee20df1 | 1585 | } |
064af421 BP |
1586 | } |
1587 | ||
75a75043 | 1588 | /* Executes the flow modification specified in 'fm'. Returns 0 on success, an |
90bf1e07 BP |
1589 | * OFPERR_* OpenFlow error code on failure, or OFPROTO_POSTPONE if the |
1590 | * operation cannot be initiated now but may be retried later. | |
75a75043 BP |
1591 | * |
1592 | * This is a helper function for in-band control and fail-open. */ | |
1593 | int | |
1594 | ofproto_flow_mod(struct ofproto *ofproto, const struct ofputil_flow_mod *fm) | |
1595 | { | |
1596 | return handle_flow_mod__(ofproto, NULL, fm, NULL); | |
1597 | } | |
1598 | ||
6c1491fb BP |
1599 | /* Searches for a rule with matching criteria exactly equal to 'target' in |
1600 | * ofproto's table 0 and, if it finds one, deletes it. | |
1601 | * | |
1602 | * This is a helper function for in-band control and fail-open. */ | |
7ee20df1 | 1603 | bool |
81a76618 BP |
1604 | ofproto_delete_flow(struct ofproto *ofproto, |
1605 | const struct match *target, unsigned int priority) | |
064af421 BP |
1606 | { |
1607 | struct rule *rule; | |
1608 | ||
81a76618 BP |
1609 | rule = rule_from_cls_rule(classifier_find_match_exactly( |
1610 | &ofproto->tables[0].cls, target, priority)); | |
7ee20df1 BP |
1611 | if (!rule) { |
1612 | /* No such rule -> success. */ | |
1613 | return true; | |
1614 | } else if (rule->pending) { | |
1615 | /* An operation on the rule is already pending -> failure. | |
1616 | * Caller must retry later if it's important. */ | |
1617 | return false; | |
1618 | } else { | |
1619 | /* Initiate deletion -> success. */ | |
7024dffe | 1620 | struct ofopgroup *group = ofopgroup_create_unattached(ofproto); |
2b07c8b1 | 1621 | ofoperation_create(group, rule, OFOPERATION_DELETE, OFPRR_DELETE); |
d0918789 | 1622 | oftable_remove_rule(rule); |
254750ce | 1623 | ofproto->ofproto_class->rule_destruct(rule); |
7ee20df1 BP |
1624 | ofopgroup_submit(group); |
1625 | return true; | |
bcf84111 | 1626 | } |
5ecc9d81 | 1627 | |
142e1f5c BP |
1628 | } |
1629 | ||
7ee20df1 BP |
1630 | /* Starts the process of deleting all of the flows from all of ofproto's flow |
1631 | * tables and then reintroducing the flows required by in-band control and | |
1632 | * fail-open. The process will complete in a later call to ofproto_run(). */ | |
142e1f5c BP |
1633 | void |
1634 | ofproto_flush_flows(struct ofproto *ofproto) | |
1635 | { | |
7ee20df1 BP |
1636 | COVERAGE_INC(ofproto_flush); |
1637 | ofproto->state = S_FLUSH; | |
064af421 BP |
1638 | } |
1639 | \f | |
1640 | static void | |
1641 | reinit_ports(struct ofproto *p) | |
1642 | { | |
abe529af | 1643 | struct ofproto_port_dump dump; |
b3c01ed3 | 1644 | struct sset devnames; |
064af421 | 1645 | struct ofport *ofport; |
abe529af | 1646 | struct ofproto_port ofproto_port; |
b3c01ed3 | 1647 | const char *devname; |
064af421 | 1648 | |
898bf89d JP |
1649 | COVERAGE_INC(ofproto_reinit_ports); |
1650 | ||
b3c01ed3 | 1651 | sset_init(&devnames); |
4e8e4213 | 1652 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { |
1264ec95 | 1653 | sset_add(&devnames, netdev_get_name(ofport->netdev)); |
064af421 | 1654 | } |
abe529af BP |
1655 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { |
1656 | sset_add(&devnames, ofproto_port.name); | |
064af421 | 1657 | } |
064af421 | 1658 | |
b3c01ed3 BP |
1659 | SSET_FOR_EACH (devname, &devnames) { |
1660 | update_port(p, devname); | |
064af421 | 1661 | } |
b3c01ed3 | 1662 | sset_destroy(&devnames); |
064af421 BP |
1663 | } |
1664 | ||
e1b1d06a JP |
1665 | static uint16_t |
1666 | alloc_ofp_port(struct ofproto *ofproto, const char *netdev_name) | |
1667 | { | |
1668 | uint16_t ofp_port; | |
6033d9d9 | 1669 | uint16_t end_port_no = ofproto->alloc_port_no; |
e1b1d06a JP |
1670 | |
1671 | ofp_port = simap_get(&ofproto->ofp_requests, netdev_name); | |
1672 | ofp_port = ofp_port ? ofp_port : OFPP_NONE; | |
1673 | ||
1674 | if (ofp_port >= ofproto->max_ports | |
1675 | || bitmap_is_set(ofproto->ofp_port_ids, ofp_port)) { | |
e1b1d06a JP |
1676 | /* Search for a free OpenFlow port number. We try not to |
1677 | * immediately reuse them to prevent problems due to old | |
1678 | * flows. */ | |
6033d9d9 KK |
1679 | for (;;) { |
1680 | if (++ofproto->alloc_port_no >= ofproto->max_ports) { | |
1681 | ofproto->alloc_port_no = 0; | |
1682 | } | |
1683 | if (!bitmap_is_set(ofproto->ofp_port_ids, | |
1684 | ofproto->alloc_port_no)) { | |
1685 | ofp_port = ofproto->alloc_port_no; | |
1686 | break; | |
e1b1d06a | 1687 | } |
6033d9d9 KK |
1688 | if (ofproto->alloc_port_no == end_port_no) { |
1689 | return OFPP_NONE; | |
e1b1d06a JP |
1690 | } |
1691 | } | |
1692 | } | |
e1b1d06a JP |
1693 | bitmap_set1(ofproto->ofp_port_ids, ofp_port); |
1694 | return ofp_port; | |
1695 | } | |
1696 | ||
1697 | static void | |
1698 | dealloc_ofp_port(const struct ofproto *ofproto, uint16_t ofp_port) | |
1699 | { | |
40fa9417 BP |
1700 | if (ofp_port < ofproto->max_ports) { |
1701 | bitmap_set0(ofproto->ofp_port_ids, ofp_port); | |
1702 | } | |
e1b1d06a JP |
1703 | } |
1704 | ||
fbfa2911 BP |
1705 | /* Opens and returns a netdev for 'ofproto_port' in 'ofproto', or a null |
1706 | * pointer if the netdev cannot be opened. On success, also fills in | |
1707 | * 'opp'. */ | |
b33951b8 | 1708 | static struct netdev * |
e1b1d06a JP |
1709 | ofport_open(struct ofproto *ofproto, |
1710 | struct ofproto_port *ofproto_port, | |
9e1fd49b | 1711 | struct ofputil_phy_port *pp) |
064af421 BP |
1712 | { |
1713 | enum netdev_flags flags; | |
064af421 | 1714 | struct netdev *netdev; |
064af421 BP |
1715 | int error; |
1716 | ||
18812dff | 1717 | error = netdev_open(ofproto_port->name, ofproto_port->type, &netdev); |
064af421 | 1718 | if (error) { |
fbfa2911 | 1719 | VLOG_WARN_RL(&rl, "%s: ignoring port %s (%"PRIu16") because netdev %s " |
064af421 | 1720 | "cannot be opened (%s)", |
fbfa2911 | 1721 | ofproto->name, |
abe529af BP |
1722 | ofproto_port->name, ofproto_port->ofp_port, |
1723 | ofproto_port->name, strerror(error)); | |
064af421 BP |
1724 | return NULL; |
1725 | } | |
1726 | ||
e1b1d06a JP |
1727 | if (ofproto_port->ofp_port == OFPP_NONE) { |
1728 | if (!strcmp(ofproto->name, ofproto_port->name)) { | |
1729 | ofproto_port->ofp_port = OFPP_LOCAL; | |
1730 | } else { | |
1731 | ofproto_port->ofp_port = alloc_ofp_port(ofproto, | |
1732 | ofproto_port->name); | |
1733 | } | |
1734 | } | |
9e1fd49b BP |
1735 | pp->port_no = ofproto_port->ofp_port; |
1736 | netdev_get_etheraddr(netdev, pp->hw_addr); | |
1737 | ovs_strlcpy(pp->name, ofproto_port->name, sizeof pp->name); | |
064af421 | 1738 | netdev_get_flags(netdev, &flags); |
9e1fd49b BP |
1739 | pp->config = flags & NETDEV_UP ? 0 : OFPUTIL_PC_PORT_DOWN; |
1740 | pp->state = netdev_get_carrier(netdev) ? 0 : OFPUTIL_PS_LINK_DOWN; | |
1741 | netdev_get_features(netdev, &pp->curr, &pp->advertised, | |
1742 | &pp->supported, &pp->peer); | |
d02a5f8e BP |
1743 | pp->curr_speed = netdev_features_to_bps(pp->curr, 0); |
1744 | pp->max_speed = netdev_features_to_bps(pp->supported, 0); | |
118c4676 | 1745 | |
b33951b8 | 1746 | return netdev; |
064af421 BP |
1747 | } |
1748 | ||
b33951b8 | 1749 | /* Returns true if most fields of 'a' and 'b' are equal. Differences in name, |
9e1fd49b | 1750 | * port number, and 'config' bits other than OFPUTIL_PS_LINK_DOWN are |
b33951b8 BP |
1751 | * disregarded. */ |
1752 | static bool | |
9e1fd49b BP |
1753 | ofport_equal(const struct ofputil_phy_port *a, |
1754 | const struct ofputil_phy_port *b) | |
064af421 | 1755 | { |
9e1fd49b | 1756 | return (eth_addr_equals(a->hw_addr, b->hw_addr) |
064af421 | 1757 | && a->state == b->state |
9e1fd49b | 1758 | && !((a->config ^ b->config) & OFPUTIL_PC_PORT_DOWN) |
064af421 BP |
1759 | && a->curr == b->curr |
1760 | && a->advertised == b->advertised | |
1761 | && a->supported == b->supported | |
9e1fd49b BP |
1762 | && a->peer == b->peer |
1763 | && a->curr_speed == b->curr_speed | |
1764 | && a->max_speed == b->max_speed); | |
064af421 BP |
1765 | } |
1766 | ||
b33951b8 BP |
1767 | /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'. |
1768 | * The caller must ensure that 'p' does not have a conflicting ofport (that is, | |
1769 | * one with the same name or port number). */ | |
064af421 | 1770 | static void |
b33951b8 | 1771 | ofport_install(struct ofproto *p, |
9e1fd49b | 1772 | struct netdev *netdev, const struct ofputil_phy_port *pp) |
064af421 | 1773 | { |
b33951b8 BP |
1774 | const char *netdev_name = netdev_get_name(netdev); |
1775 | struct ofport *ofport; | |
abe529af | 1776 | int error; |
72b06300 | 1777 | |
b33951b8 | 1778 | /* Create ofport. */ |
abe529af BP |
1779 | ofport = p->ofproto_class->port_alloc(); |
1780 | if (!ofport) { | |
1781 | error = ENOMEM; | |
1782 | goto error; | |
1783 | } | |
0f7d71a5 | 1784 | ofport->ofproto = p; |
b33951b8 | 1785 | ofport->netdev = netdev; |
031d8bff | 1786 | ofport->change_seq = netdev_change_seq(netdev); |
9e1fd49b BP |
1787 | ofport->pp = *pp; |
1788 | ofport->ofp_port = pp->port_no; | |
b33951b8 BP |
1789 | |
1790 | /* Add port to 'p'. */ | |
abe529af | 1791 | hmap_insert(&p->ports, &ofport->hmap_node, hash_int(ofport->ofp_port, 0)); |
72b06300 | 1792 | shash_add(&p->port_by_name, netdev_name, ofport); |
abe529af | 1793 | |
ada3428f | 1794 | update_mtu(p, ofport); |
9197df76 | 1795 | |
abe529af BP |
1796 | /* Let the ofproto_class initialize its private data. */ |
1797 | error = p->ofproto_class->port_construct(ofport); | |
1798 | if (error) { | |
1799 | goto error; | |
1800 | } | |
9e1fd49b | 1801 | connmgr_send_port_status(p->connmgr, pp, OFPPR_ADD); |
abe529af BP |
1802 | return; |
1803 | ||
1804 | error: | |
1805 | VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)", | |
1806 | p->name, netdev_name, strerror(error)); | |
1807 | if (ofport) { | |
1808 | ofport_destroy__(ofport); | |
1809 | } else { | |
1810 | netdev_close(netdev); | |
72b06300 | 1811 | } |
064af421 BP |
1812 | } |
1813 | ||
b33951b8 | 1814 | /* Removes 'ofport' from 'p' and destroys it. */ |
064af421 | 1815 | static void |
0f7d71a5 | 1816 | ofport_remove(struct ofport *ofport) |
064af421 | 1817 | { |
9e1fd49b | 1818 | connmgr_send_port_status(ofport->ofproto->connmgr, &ofport->pp, |
fa066f01 | 1819 | OFPPR_DELETE); |
abe529af | 1820 | ofport_destroy(ofport); |
b33951b8 BP |
1821 | } |
1822 | ||
1823 | /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and | |
1824 | * destroys it. */ | |
1825 | static void | |
1826 | ofport_remove_with_name(struct ofproto *ofproto, const char *name) | |
1827 | { | |
1828 | struct ofport *port = shash_find_data(&ofproto->port_by_name, name); | |
1829 | if (port) { | |
0f7d71a5 | 1830 | ofport_remove(port); |
b33951b8 BP |
1831 | } |
1832 | } | |
1833 | ||
9e1fd49b | 1834 | /* Updates 'port' with new 'pp' description. |
b33951b8 BP |
1835 | * |
1836 | * Does not handle a name or port number change. The caller must implement | |
1837 | * such a change as a delete followed by an add. */ | |
1838 | static void | |
9e1fd49b | 1839 | ofport_modified(struct ofport *port, struct ofputil_phy_port *pp) |
b33951b8 | 1840 | { |
9e1fd49b BP |
1841 | memcpy(port->pp.hw_addr, pp->hw_addr, ETH_ADDR_LEN); |
1842 | port->pp.config = ((port->pp.config & ~OFPUTIL_PC_PORT_DOWN) | |
1843 | | (pp->config & OFPUTIL_PC_PORT_DOWN)); | |
1844 | port->pp.state = pp->state; | |
1845 | port->pp.curr = pp->curr; | |
1846 | port->pp.advertised = pp->advertised; | |
1847 | port->pp.supported = pp->supported; | |
1848 | port->pp.peer = pp->peer; | |
1849 | port->pp.curr_speed = pp->curr_speed; | |
1850 | port->pp.max_speed = pp->max_speed; | |
b33951b8 | 1851 | |
9e1fd49b | 1852 | connmgr_send_port_status(port->ofproto->connmgr, &port->pp, OFPPR_MODIFY); |
064af421 BP |
1853 | } |
1854 | ||
5a2dfd47 JP |
1855 | /* Update OpenFlow 'state' in 'port' and notify controller. */ |
1856 | void | |
9e1fd49b | 1857 | ofproto_port_set_state(struct ofport *port, enum ofputil_port_state state) |
5a2dfd47 | 1858 | { |
9e1fd49b BP |
1859 | if (port->pp.state != state) { |
1860 | port->pp.state = state; | |
1861 | connmgr_send_port_status(port->ofproto->connmgr, &port->pp, | |
5a2dfd47 JP |
1862 | OFPPR_MODIFY); |
1863 | } | |
1864 | } | |
1865 | ||
abe529af BP |
1866 | void |
1867 | ofproto_port_unregister(struct ofproto *ofproto, uint16_t ofp_port) | |
e7934396 | 1868 | { |
abe529af BP |
1869 | struct ofport *port = ofproto_get_port(ofproto, ofp_port); |
1870 | if (port) { | |
52a90c29 BP |
1871 | if (port->ofproto->ofproto_class->set_realdev) { |
1872 | port->ofproto->ofproto_class->set_realdev(port, 0, 0); | |
1873 | } | |
b308140a JP |
1874 | if (port->ofproto->ofproto_class->set_stp_port) { |
1875 | port->ofproto->ofproto_class->set_stp_port(port, NULL); | |
1876 | } | |
abe529af | 1877 | if (port->ofproto->ofproto_class->set_cfm) { |
a5610457 | 1878 | port->ofproto->ofproto_class->set_cfm(port, NULL); |
abe529af BP |
1879 | } |
1880 | if (port->ofproto->ofproto_class->bundle_remove) { | |
1881 | port->ofproto->ofproto_class->bundle_remove(port); | |
e7934396 BP |
1882 | } |
1883 | } | |
1884 | } | |
1885 | ||
1886 | static void | |
abe529af | 1887 | ofport_destroy__(struct ofport *port) |
e7934396 | 1888 | { |
abe529af BP |
1889 | struct ofproto *ofproto = port->ofproto; |
1890 | const char *name = netdev_get_name(port->netdev); | |
fa066f01 | 1891 | |
abe529af BP |
1892 | hmap_remove(&ofproto->ports, &port->hmap_node); |
1893 | shash_delete(&ofproto->port_by_name, | |
1894 | shash_find(&ofproto->port_by_name, name)); | |
fa066f01 | 1895 | |
abe529af BP |
1896 | netdev_close(port->netdev); |
1897 | ofproto->ofproto_class->port_dealloc(port); | |
e7934396 BP |
1898 | } |
1899 | ||
064af421 | 1900 | static void |
abe529af | 1901 | ofport_destroy(struct ofport *port) |
064af421 | 1902 | { |
fa066f01 | 1903 | if (port) { |
e1b1d06a | 1904 | dealloc_ofp_port(port->ofproto, port->ofp_port); |
abe529af BP |
1905 | port->ofproto->ofproto_class->port_destruct(port); |
1906 | ofport_destroy__(port); | |
1907 | } | |
064af421 BP |
1908 | } |
1909 | ||
abe529af BP |
1910 | struct ofport * |
1911 | ofproto_get_port(const struct ofproto *ofproto, uint16_t ofp_port) | |
ca0f572c BP |
1912 | { |
1913 | struct ofport *port; | |
1914 | ||
4e8e4213 | 1915 | HMAP_FOR_EACH_IN_BUCKET (port, hmap_node, |
abe529af BP |
1916 | hash_int(ofp_port, 0), &ofproto->ports) { |
1917 | if (port->ofp_port == ofp_port) { | |
ca0f572c BP |
1918 | return port; |
1919 | } | |
1920 | } | |
1921 | return NULL; | |
1922 | } | |
1923 | ||
6527c598 PS |
1924 | int |
1925 | ofproto_port_get_stats(const struct ofport *port, struct netdev_stats *stats) | |
1926 | { | |
1927 | struct ofproto *ofproto = port->ofproto; | |
1928 | int error; | |
1929 | ||
1930 | if (ofproto->ofproto_class->port_get_stats) { | |
1931 | error = ofproto->ofproto_class->port_get_stats(port, stats); | |
1932 | } else { | |
1933 | error = EOPNOTSUPP; | |
1934 | } | |
1935 | ||
1936 | return error; | |
1937 | } | |
1938 | ||
064af421 | 1939 | static void |
b33951b8 | 1940 | update_port(struct ofproto *ofproto, const char *name) |
064af421 | 1941 | { |
abe529af | 1942 | struct ofproto_port ofproto_port; |
9e1fd49b | 1943 | struct ofputil_phy_port pp; |
b33951b8 BP |
1944 | struct netdev *netdev; |
1945 | struct ofport *port; | |
064af421 BP |
1946 | |
1947 | COVERAGE_INC(ofproto_update_port); | |
c874dc6d | 1948 | |
b33951b8 | 1949 | /* Fetch 'name''s location and properties from the datapath. */ |
abe529af | 1950 | netdev = (!ofproto_port_query_by_name(ofproto, name, &ofproto_port) |
fbfa2911 | 1951 | ? ofport_open(ofproto, &ofproto_port, &pp) |
b33951b8 BP |
1952 | : NULL); |
1953 | if (netdev) { | |
abe529af | 1954 | port = ofproto_get_port(ofproto, ofproto_port.ofp_port); |
b33951b8 | 1955 | if (port && !strcmp(netdev_get_name(port->netdev), name)) { |
e65942a0 BP |
1956 | struct netdev *old_netdev = port->netdev; |
1957 | ||
b33951b8 | 1958 | /* 'name' hasn't changed location. Any properties changed? */ |
9e1fd49b BP |
1959 | if (!ofport_equal(&port->pp, &pp)) { |
1960 | ofport_modified(port, &pp); | |
abe529af BP |
1961 | } |
1962 | ||
ada3428f | 1963 | update_mtu(ofproto, port); |
9197df76 | 1964 | |
e65942a0 BP |
1965 | /* Install the newly opened netdev in case it has changed. |
1966 | * Don't close the old netdev yet in case port_modified has to | |
1967 | * remove a retained reference to it.*/ | |
abe529af | 1968 | port->netdev = netdev; |
031d8bff | 1969 | port->change_seq = netdev_change_seq(netdev); |
abe529af BP |
1970 | |
1971 | if (port->ofproto->ofproto_class->port_modified) { | |
1972 | port->ofproto->ofproto_class->port_modified(port); | |
b33951b8 | 1973 | } |
e65942a0 BP |
1974 | |
1975 | netdev_close(old_netdev); | |
b33951b8 BP |
1976 | } else { |
1977 | /* If 'port' is nonnull then its name differs from 'name' and thus | |
1978 | * we should delete it. If we think there's a port named 'name' | |
1979 | * then its port number must be wrong now so delete it too. */ | |
1980 | if (port) { | |
0f7d71a5 | 1981 | ofport_remove(port); |
b33951b8 BP |
1982 | } |
1983 | ofport_remove_with_name(ofproto, name); | |
9e1fd49b | 1984 | ofport_install(ofproto, netdev, &pp); |
c874dc6d | 1985 | } |
b33951b8 BP |
1986 | } else { |
1987 | /* Any port named 'name' is gone now. */ | |
1988 | ofport_remove_with_name(ofproto, name); | |
c874dc6d | 1989 | } |
abe529af | 1990 | ofproto_port_destroy(&ofproto_port); |
064af421 BP |
1991 | } |
1992 | ||
1993 | static int | |
1994 | init_ports(struct ofproto *p) | |
1995 | { | |
abe529af BP |
1996 | struct ofproto_port_dump dump; |
1997 | struct ofproto_port ofproto_port; | |
e1b1d06a | 1998 | struct shash_node *node, *next; |
abe529af BP |
1999 | |
2000 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { | |
e1b1d06a JP |
2001 | const char *name = ofproto_port.name; |
2002 | ||
2003 | if (shash_find(&p->port_by_name, name)) { | |
fbfa2911 | 2004 | VLOG_WARN_RL(&rl, "%s: ignoring duplicate device %s in datapath", |
e1b1d06a | 2005 | p->name, name); |
abe529af | 2006 | } else { |
9e1fd49b | 2007 | struct ofputil_phy_port pp; |
b33951b8 BP |
2008 | struct netdev *netdev; |
2009 | ||
e1b1d06a JP |
2010 | /* Check if an OpenFlow port number had been requested. */ |
2011 | node = shash_find(&init_ofp_ports, name); | |
2012 | if (node) { | |
2013 | const struct iface_hint *iface_hint = node->data; | |
2014 | simap_put(&p->ofp_requests, name, iface_hint->ofp_port); | |
2015 | } | |
2016 | ||
fbfa2911 | 2017 | netdev = ofport_open(p, &ofproto_port, &pp); |
b33951b8 | 2018 | if (netdev) { |
9e1fd49b | 2019 | ofport_install(p, netdev, &pp); |
064af421 BP |
2020 | } |
2021 | } | |
2022 | } | |
b0ec0f27 | 2023 | |
e1b1d06a | 2024 | SHASH_FOR_EACH_SAFE(node, next, &init_ofp_ports) { |
4f9e08a5 | 2025 | struct iface_hint *iface_hint = node->data; |
e1b1d06a JP |
2026 | |
2027 | if (!strcmp(iface_hint->br_name, p->name)) { | |
2028 | free(iface_hint->br_name); | |
2029 | free(iface_hint->br_type); | |
4f9e08a5 | 2030 | free(iface_hint); |
e1b1d06a JP |
2031 | shash_delete(&init_ofp_ports, node); |
2032 | } | |
2033 | } | |
2034 | ||
064af421 BP |
2035 | return 0; |
2036 | } | |
9197df76 JP |
2037 | |
2038 | /* Find the minimum MTU of all non-datapath devices attached to 'p'. | |
2039 | * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */ | |
2040 | static int | |
2041 | find_min_mtu(struct ofproto *p) | |
2042 | { | |
2043 | struct ofport *ofport; | |
2044 | int mtu = 0; | |
2045 | ||
2046 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2047 | struct netdev *netdev = ofport->netdev; | |
2048 | int dev_mtu; | |
2049 | ||
2050 | /* Skip any internal ports, since that's what we're trying to | |
2051 | * set. */ | |
2052 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
2053 | continue; | |
2054 | } | |
2055 | ||
2056 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2057 | continue; | |
2058 | } | |
2059 | if (!mtu || dev_mtu < mtu) { | |
2060 | mtu = dev_mtu; | |
2061 | } | |
2062 | } | |
2063 | ||
2064 | return mtu ? mtu: ETH_PAYLOAD_MAX; | |
2065 | } | |
2066 | ||
ada3428f PS |
2067 | /* Update MTU of all datapath devices on 'p' to the minimum of the |
2068 | * non-datapath ports in event of 'port' added or changed. */ | |
9197df76 | 2069 | static void |
ada3428f | 2070 | update_mtu(struct ofproto *p, struct ofport *port) |
9197df76 JP |
2071 | { |
2072 | struct ofport *ofport; | |
ada3428f PS |
2073 | struct netdev *netdev = port->netdev; |
2074 | int dev_mtu, old_min; | |
2075 | ||
2076 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2077 | port->mtu = 0; | |
2078 | return; | |
2079 | } | |
2080 | if (!strcmp(netdev_get_type(port->netdev), "internal")) { | |
2081 | if (dev_mtu > p->min_mtu) { | |
2082 | if (!netdev_set_mtu(port->netdev, p->min_mtu)) { | |
2083 | dev_mtu = p->min_mtu; | |
2084 | } | |
2085 | } | |
2086 | port->mtu = dev_mtu; | |
2087 | return; | |
2088 | } | |
2089 | ||
2090 | /* For non-internal port find new min mtu. */ | |
2091 | old_min = p->min_mtu; | |
2092 | port->mtu = dev_mtu; | |
2093 | p->min_mtu = find_min_mtu(p); | |
2094 | if (p->min_mtu == old_min) { | |
2095 | return; | |
2096 | } | |
9197df76 JP |
2097 | |
2098 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2099 | struct netdev *netdev = ofport->netdev; | |
2100 | ||
2101 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
ada3428f PS |
2102 | if (!netdev_set_mtu(netdev, p->min_mtu)) { |
2103 | ofport->mtu = p->min_mtu; | |
2104 | } | |
9197df76 JP |
2105 | } |
2106 | } | |
2107 | } | |
064af421 | 2108 | \f |
064af421 | 2109 | static void |
abe529af | 2110 | ofproto_rule_destroy__(struct rule *rule) |
064af421 | 2111 | { |
1eae3d33 | 2112 | if (rule) { |
48d28ac1 | 2113 | cls_rule_destroy(&rule->cr); |
f25d0cf3 | 2114 | free(rule->ofpacts); |
1eae3d33 BP |
2115 | rule->ofproto->ofproto_class->rule_dealloc(rule); |
2116 | } | |
064af421 BP |
2117 | } |
2118 | ||
7ee20df1 BP |
2119 | /* This function allows an ofproto implementation to destroy any rules that |
2120 | * remain when its ->destruct() function is called. The caller must have | |
2121 | * already uninitialized any derived members of 'rule' (step 5 described in the | |
5bee6e26 JP |
2122 | * large comment in ofproto/ofproto-provider.h titled "Life Cycle"). |
2123 | * This function implements steps 6 and 7. | |
7ee20df1 BP |
2124 | * |
2125 | * This function should only be called from an ofproto implementation's | |
2126 | * ->destruct() function. It is not suitable elsewhere. */ | |
abe529af BP |
2127 | void |
2128 | ofproto_rule_destroy(struct rule *rule) | |
064af421 | 2129 | { |
cb22974d | 2130 | ovs_assert(!rule->pending); |
d0918789 | 2131 | oftable_remove_rule(rule); |
7ee20df1 | 2132 | ofproto_rule_destroy__(rule); |
064af421 BP |
2133 | } |
2134 | ||
bcf84111 | 2135 | /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action |
f25d0cf3 | 2136 | * that outputs to 'port' (output to OFPP_FLOOD and OFPP_ALL doesn't count). */ |
2b07c8b1 BP |
2137 | bool |
2138 | ofproto_rule_has_out_port(const struct rule *rule, uint16_t port) | |
064af421 | 2139 | { |
7f05e7ab | 2140 | return (port == OFPP_ANY |
f25d0cf3 | 2141 | || ofpacts_output_to_port(rule->ofpacts, rule->ofpacts_len, port)); |
064af421 BP |
2142 | } |
2143 | ||
2b07c8b1 BP |
2144 | /* Returns true if a rule related to 'op' has an OpenFlow OFPAT_OUTPUT or |
2145 | * OFPAT_ENQUEUE action that outputs to 'out_port'. */ | |
2146 | bool | |
2147 | ofoperation_has_out_port(const struct ofoperation *op, uint16_t out_port) | |
2148 | { | |
2149 | if (ofproto_rule_has_out_port(op->rule, out_port)) { | |
2150 | return true; | |
2151 | } | |
2152 | ||
2153 | switch (op->type) { | |
2154 | case OFOPERATION_ADD: | |
2155 | return op->victim && ofproto_rule_has_out_port(op->victim, out_port); | |
2156 | ||
2157 | case OFOPERATION_DELETE: | |
2158 | return false; | |
2159 | ||
2160 | case OFOPERATION_MODIFY: | |
2161 | return ofpacts_output_to_port(op->ofpacts, op->ofpacts_len, out_port); | |
2162 | } | |
2163 | ||
2164 | NOT_REACHED(); | |
2165 | } | |
2166 | ||
bcf84111 | 2167 | /* Executes the actions indicated by 'rule' on 'packet' and credits 'rule''s |
bcf84111 | 2168 | * statistics appropriately. 'packet' must have at least sizeof(struct |
31a9e63f | 2169 | * ofp10_packet_in) bytes of headroom. |
064af421 | 2170 | * |
bcf84111 BP |
2171 | * 'packet' doesn't necessarily have to match 'rule'. 'rule' will be credited |
2172 | * with statistics for 'packet' either way. | |
2173 | * | |
2174 | * Takes ownership of 'packet'. */ | |
5bf0e941 | 2175 | static int |
abe529af | 2176 | rule_execute(struct rule *rule, uint16_t in_port, struct ofpbuf *packet) |
eedc0097 | 2177 | { |
bcf84111 | 2178 | struct flow flow; |
eedc0097 | 2179 | |
cb22974d | 2180 | ovs_assert(ofpbuf_headroom(packet) >= sizeof(struct ofp10_packet_in)); |
eedc0097 | 2181 | |
72e8bf28 | 2182 | flow_extract(packet, 0, 0, NULL, in_port, &flow); |
5bf0e941 | 2183 | return rule->ofproto->ofproto_class->rule_execute(rule, &flow, packet); |
350a665f BP |
2184 | } |
2185 | ||
abe529af BP |
2186 | /* Returns true if 'rule' should be hidden from the controller. |
2187 | * | |
2188 | * Rules with priority higher than UINT16_MAX are set up by ofproto itself | |
2189 | * (e.g. by in-band control) and are intentionally hidden from the | |
2190 | * controller. */ | |
2b07c8b1 BP |
2191 | bool |
2192 | ofproto_rule_is_hidden(const struct rule *rule) | |
b6c9e612 | 2193 | { |
abe529af | 2194 | return rule->cr.priority > UINT16_MAX; |
7b064a79 | 2195 | } |
5c67e4af BP |
2196 | |
2197 | static enum oftable_flags | |
2198 | rule_get_flags(const struct rule *rule) | |
2199 | { | |
2200 | return rule->ofproto->tables[rule->table_id].flags; | |
2201 | } | |
2202 | ||
2203 | static bool | |
2204 | rule_is_modifiable(const struct rule *rule) | |
2205 | { | |
2206 | return !(rule_get_flags(rule) & OFTABLE_READONLY); | |
2207 | } | |
fa066f01 | 2208 | \f |
90bf1e07 | 2209 | static enum ofperr |
d1e2cf21 | 2210 | handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2211 | { |
b0421aa2 | 2212 | ofconn_send_reply(ofconn, make_echo_reply(oh)); |
064af421 | 2213 | return 0; |
064af421 BP |
2214 | } |
2215 | ||
90bf1e07 | 2216 | static enum ofperr |
d1e2cf21 | 2217 | handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2218 | { |
64ff1d96 | 2219 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
9e1fd49b | 2220 | struct ofputil_switch_features features; |
064af421 | 2221 | struct ofport *port; |
6c1491fb | 2222 | bool arp_match_ip; |
9e1fd49b | 2223 | struct ofpbuf *b; |
c2f0373a BP |
2224 | int n_tables; |
2225 | int i; | |
064af421 | 2226 | |
9e1fd49b BP |
2227 | ofproto->ofproto_class->get_features(ofproto, &arp_match_ip, |
2228 | &features.actions); | |
cb22974d | 2229 | ovs_assert(features.actions & OFPUTIL_A_OUTPUT); /* sanity check */ |
064af421 | 2230 | |
c2f0373a BP |
2231 | /* Count only non-hidden tables in the number of tables. (Hidden tables, |
2232 | * if present, are always at the end.) */ | |
2233 | n_tables = ofproto->n_tables; | |
2234 | for (i = 0; i < ofproto->n_tables; i++) { | |
2235 | if (ofproto->tables[i].flags & OFTABLE_HIDDEN) { | |
2236 | n_tables = i; | |
2237 | break; | |
2238 | } | |
2239 | } | |
2240 | ||
9e1fd49b BP |
2241 | features.datapath_id = ofproto->datapath_id; |
2242 | features.n_buffers = pktbuf_capacity(); | |
c2f0373a | 2243 | features.n_tables = n_tables; |
9e1fd49b BP |
2244 | features.capabilities = (OFPUTIL_C_FLOW_STATS | OFPUTIL_C_TABLE_STATS | |
2245 | OFPUTIL_C_PORT_STATS | OFPUTIL_C_QUEUE_STATS); | |
6c1491fb | 2246 | if (arp_match_ip) { |
9e1fd49b | 2247 | features.capabilities |= OFPUTIL_C_ARP_MATCH_IP; |
6c1491fb | 2248 | } |
2e1ae200 JR |
2249 | /* FIXME: Fill in proper features.auxiliary_id for auxiliary connections */ |
2250 | features.auxiliary_id = 0; | |
9e1fd49b BP |
2251 | b = ofputil_encode_switch_features(&features, ofconn_get_protocol(ofconn), |
2252 | oh->xid); | |
64ff1d96 | 2253 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
9e1fd49b | 2254 | ofputil_put_switch_features_port(&port->pp, b); |
064af421 | 2255 | } |
064af421 | 2256 | |
9e1fd49b | 2257 | ofconn_send_reply(ofconn, b); |
064af421 BP |
2258 | return 0; |
2259 | } | |
064af421 | 2260 | |
90bf1e07 | 2261 | static enum ofperr |
d1e2cf21 | 2262 | handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2263 | { |
64ff1d96 | 2264 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 | 2265 | struct ofp_switch_config *osc; |
f0fd1a17 | 2266 | enum ofp_config_flags flags; |
7257b535 | 2267 | struct ofpbuf *buf; |
959a2ecd | 2268 | |
064af421 | 2269 | /* Send reply. */ |
982697a4 BP |
2270 | buf = ofpraw_alloc_reply(OFPRAW_OFPT_GET_CONFIG_REPLY, oh, 0); |
2271 | osc = ofpbuf_put_uninit(buf, sizeof *osc); | |
f0fd1a17 | 2272 | flags = ofproto->frag_handling; |
2e1ae200 JR |
2273 | /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */ |
2274 | if (oh->version < OFP13_VERSION | |
2275 | && ofconn_get_invalid_ttl_to_controller(ofconn)) { | |
f0fd1a17 PS |
2276 | flags |= OFPC_INVALID_TTL_TO_CONTROLLER; |
2277 | } | |
2278 | osc->flags = htons(flags); | |
810605a2 | 2279 | osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn)); |
b0421aa2 | 2280 | ofconn_send_reply(ofconn, buf); |
2d70a31a | 2281 | |
064af421 BP |
2282 | return 0; |
2283 | } | |
064af421 | 2284 | |
90bf1e07 | 2285 | static enum ofperr |
982697a4 | 2286 | handle_set_config(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2287 | { |
982697a4 | 2288 | const struct ofp_switch_config *osc = ofpmsg_body(oh); |
64ff1d96 | 2289 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
d1e2cf21 | 2290 | uint16_t flags = ntohs(osc->flags); |
2d70a31a | 2291 | |
7257b535 | 2292 | if (ofconn_get_type(ofconn) != OFCONN_PRIMARY |
f4f1ea7e | 2293 | || ofconn_get_role(ofconn) != OFPCR12_ROLE_SLAVE) { |
7257b535 BP |
2294 | enum ofp_config_flags cur = ofproto->frag_handling; |
2295 | enum ofp_config_flags next = flags & OFPC_FRAG_MASK; | |
2296 | ||
cb22974d | 2297 | ovs_assert((cur & OFPC_FRAG_MASK) == cur); |
7257b535 BP |
2298 | if (cur != next) { |
2299 | if (ofproto->ofproto_class->set_frag_handling(ofproto, next)) { | |
2300 | ofproto->frag_handling = next; | |
2301 | } else { | |
2302 | VLOG_WARN_RL(&rl, "%s: unsupported fragment handling mode %s", | |
2303 | ofproto->name, | |
2304 | ofputil_frag_handling_to_string(next)); | |
2305 | } | |
064af421 BP |
2306 | } |
2307 | } | |
2e1ae200 | 2308 | /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */ |
f0fd1a17 | 2309 | ofconn_set_invalid_ttl_to_controller(ofconn, |
2e1ae200 JR |
2310 | (oh->version < OFP13_VERSION |
2311 | && flags & OFPC_INVALID_TTL_TO_CONTROLLER)); | |
ebe482fd | 2312 | |
810605a2 | 2313 | ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len)); |
0ad9b732 | 2314 | |
064af421 | 2315 | return 0; |
064af421 BP |
2316 | } |
2317 | ||
9deba63b | 2318 | /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow |
90bf1e07 BP |
2319 | * error message code for the caller to propagate upward. Otherwise, returns |
2320 | * 0. | |
2321 | * | |
2322 | * The log message mentions 'msg_type'. */ | |
2323 | static enum ofperr | |
2324 | reject_slave_controller(struct ofconn *ofconn) | |
9deba63b | 2325 | { |
1ce0a5fa | 2326 | if (ofconn_get_type(ofconn) == OFCONN_PRIMARY |
f4f1ea7e | 2327 | && ofconn_get_role(ofconn) == OFPCR12_ROLE_SLAVE) { |
90bf1e07 | 2328 | return OFPERR_OFPBRC_EPERM; |
9deba63b BP |
2329 | } else { |
2330 | return 0; | |
2331 | } | |
2332 | } | |
2333 | ||
90bf1e07 | 2334 | static enum ofperr |
982697a4 | 2335 | handle_packet_out(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2336 | { |
64ff1d96 | 2337 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
c6a93eb7 BP |
2338 | struct ofputil_packet_out po; |
2339 | struct ofpbuf *payload; | |
f25d0cf3 BP |
2340 | uint64_t ofpacts_stub[1024 / 8]; |
2341 | struct ofpbuf ofpacts; | |
ae412e7d | 2342 | struct flow flow; |
90bf1e07 | 2343 | enum ofperr error; |
064af421 | 2344 | |
ac51afaf BP |
2345 | COVERAGE_INC(ofproto_packet_out); |
2346 | ||
76589937 | 2347 | error = reject_slave_controller(ofconn); |
9deba63b | 2348 | if (error) { |
f25d0cf3 | 2349 | goto exit; |
9deba63b BP |
2350 | } |
2351 | ||
c6a93eb7 | 2352 | /* Decode message. */ |
f25d0cf3 | 2353 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
982697a4 | 2354 | error = ofputil_decode_packet_out(&po, oh, &ofpacts); |
064af421 | 2355 | if (error) { |
f25d0cf3 | 2356 | goto exit_free_ofpacts; |
064af421 | 2357 | } |
91858960 | 2358 | if (po.in_port >= p->max_ports && po.in_port < OFPP_MAX) { |
2e1bfcb6 | 2359 | error = OFPERR_OFPBRC_BAD_PORT; |
91858960 BP |
2360 | goto exit_free_ofpacts; |
2361 | } | |
064af421 | 2362 | |
5cb7a798 | 2363 | |
ac51afaf | 2364 | /* Get payload. */ |
c6a93eb7 BP |
2365 | if (po.buffer_id != UINT32_MAX) { |
2366 | error = ofconn_pktbuf_retrieve(ofconn, po.buffer_id, &payload, NULL); | |
2367 | if (error || !payload) { | |
f25d0cf3 | 2368 | goto exit_free_ofpacts; |
064af421 | 2369 | } |
064af421 | 2370 | } else { |
c6a93eb7 BP |
2371 | payload = xmalloc(sizeof *payload); |
2372 | ofpbuf_use_const(payload, po.packet, po.packet_len); | |
e1154f71 BP |
2373 | } |
2374 | ||
548de4dd | 2375 | /* Verify actions against packet, then send packet if successful. */ |
72e8bf28 | 2376 | flow_extract(payload, 0, 0, NULL, po.in_port, &flow); |
548de4dd BP |
2377 | error = ofpacts_check(po.ofpacts, po.ofpacts_len, &flow, p->max_ports); |
2378 | if (!error) { | |
2379 | error = p->ofproto_class->packet_out(p, payload, &flow, | |
2380 | po.ofpacts, po.ofpacts_len); | |
2381 | } | |
c6a93eb7 | 2382 | ofpbuf_delete(payload); |
abe529af | 2383 | |
f25d0cf3 BP |
2384 | exit_free_ofpacts: |
2385 | ofpbuf_uninit(&ofpacts); | |
2386 | exit: | |
abe529af | 2387 | return error; |
064af421 BP |
2388 | } |
2389 | ||
2390 | static void | |
9e1fd49b BP |
2391 | update_port_config(struct ofport *port, |
2392 | enum ofputil_port_config config, | |
2393 | enum ofputil_port_config mask) | |
064af421 | 2394 | { |
9e1fd49b BP |
2395 | enum ofputil_port_config old_config = port->pp.config; |
2396 | enum ofputil_port_config toggle; | |
abe529af | 2397 | |
9e1fd49b BP |
2398 | toggle = (config ^ port->pp.config) & mask; |
2399 | if (toggle & OFPUTIL_PC_PORT_DOWN) { | |
2400 | if (config & OFPUTIL_PC_PORT_DOWN) { | |
4b609110 | 2401 | netdev_turn_flags_off(port->netdev, NETDEV_UP, NULL); |
064af421 | 2402 | } else { |
4b609110 | 2403 | netdev_turn_flags_on(port->netdev, NETDEV_UP, NULL); |
064af421 | 2404 | } |
9e1fd49b | 2405 | toggle &= ~OFPUTIL_PC_PORT_DOWN; |
064af421 | 2406 | } |
abe529af | 2407 | |
9e1fd49b BP |
2408 | port->pp.config ^= toggle; |
2409 | if (port->pp.config != old_config) { | |
abe529af | 2410 | port->ofproto->ofproto_class->port_reconfigured(port, old_config); |
064af421 BP |
2411 | } |
2412 | } | |
2413 | ||
90bf1e07 | 2414 | static enum ofperr |
d1e2cf21 | 2415 | handle_port_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2416 | { |
64ff1d96 | 2417 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
9e1fd49b | 2418 | struct ofputil_port_mod pm; |
064af421 | 2419 | struct ofport *port; |
9e1fd49b | 2420 | enum ofperr error; |
064af421 | 2421 | |
76589937 | 2422 | error = reject_slave_controller(ofconn); |
9deba63b BP |
2423 | if (error) { |
2424 | return error; | |
2425 | } | |
064af421 | 2426 | |
9e1fd49b BP |
2427 | error = ofputil_decode_port_mod(oh, &pm); |
2428 | if (error) { | |
2429 | return error; | |
2430 | } | |
2431 | ||
2432 | port = ofproto_get_port(p, pm.port_no); | |
064af421 | 2433 | if (!port) { |
90bf1e07 | 2434 | return OFPERR_OFPPMFC_BAD_PORT; |
9e1fd49b | 2435 | } else if (!eth_addr_equals(port->pp.hw_addr, pm.hw_addr)) { |
90bf1e07 | 2436 | return OFPERR_OFPPMFC_BAD_HW_ADDR; |
064af421 | 2437 | } else { |
9e1fd49b BP |
2438 | update_port_config(port, pm.config, pm.mask); |
2439 | if (pm.advertise) { | |
2440 | netdev_set_advertisements(port->netdev, pm.advertise); | |
064af421 BP |
2441 | } |
2442 | } | |
2443 | return 0; | |
2444 | } | |
2445 | ||
90bf1e07 | 2446 | static enum ofperr |
3269c562 | 2447 | handle_desc_stats_request(struct ofconn *ofconn, |
982697a4 | 2448 | const struct ofp_header *request) |
064af421 | 2449 | { |
061bfea4 BP |
2450 | static const char *default_mfr_desc = "Nicira, Inc."; |
2451 | static const char *default_hw_desc = "Open vSwitch"; | |
2452 | static const char *default_sw_desc = VERSION; | |
2453 | static const char *default_serial_desc = "None"; | |
2454 | static const char *default_dp_desc = "None"; | |
2455 | ||
64ff1d96 | 2456 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 BP |
2457 | struct ofp_desc_stats *ods; |
2458 | struct ofpbuf *msg; | |
2459 | ||
982697a4 BP |
2460 | msg = ofpraw_alloc_stats_reply(request, 0); |
2461 | ods = ofpbuf_put_zeros(msg, sizeof *ods); | |
061bfea4 BP |
2462 | ovs_strlcpy(ods->mfr_desc, p->mfr_desc ? p->mfr_desc : default_mfr_desc, |
2463 | sizeof ods->mfr_desc); | |
2464 | ovs_strlcpy(ods->hw_desc, p->hw_desc ? p->hw_desc : default_hw_desc, | |
2465 | sizeof ods->hw_desc); | |
2466 | ovs_strlcpy(ods->sw_desc, p->sw_desc ? p->sw_desc : default_sw_desc, | |
2467 | sizeof ods->sw_desc); | |
2468 | ovs_strlcpy(ods->serial_num, | |
2469 | p->serial_desc ? p->serial_desc : default_serial_desc, | |
2470 | sizeof ods->serial_num); | |
2471 | ovs_strlcpy(ods->dp_desc, p->dp_desc ? p->dp_desc : default_dp_desc, | |
2472 | sizeof ods->dp_desc); | |
b0421aa2 | 2473 | ofconn_send_reply(ofconn, msg); |
064af421 BP |
2474 | |
2475 | return 0; | |
2476 | } | |
2477 | ||
90bf1e07 | 2478 | static enum ofperr |
3269c562 | 2479 | handle_table_stats_request(struct ofconn *ofconn, |
982697a4 | 2480 | const struct ofp_header *request) |
064af421 | 2481 | { |
64ff1d96 | 2482 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
307975da | 2483 | struct ofp12_table_stats *ots; |
064af421 | 2484 | struct ofpbuf *msg; |
c2f0373a | 2485 | int n_tables; |
6c1491fb | 2486 | size_t i; |
064af421 | 2487 | |
307975da SH |
2488 | /* Set up default values. |
2489 | * | |
2490 | * ofp12_table_stats is used as a generic structure as | |
2491 | * it is able to hold all the fields for ofp10_table_stats | |
2492 | * and ofp11_table_stats (and of course itself). | |
2493 | */ | |
2494 | ots = xcalloc(p->n_tables, sizeof *ots); | |
6c1491fb BP |
2495 | for (i = 0; i < p->n_tables; i++) { |
2496 | ots[i].table_id = i; | |
35aa7a21 | 2497 | sprintf(ots[i].name, "table%zu", i); |
307975da SH |
2498 | ots[i].match = htonll(OFPXMT12_MASK); |
2499 | ots[i].wildcards = htonll(OFPXMT12_MASK); | |
e78b61f6 BP |
2500 | ots[i].write_actions = htonl(OFPAT11_OUTPUT); |
2501 | ots[i].apply_actions = htonl(OFPAT11_OUTPUT); | |
307975da SH |
2502 | ots[i].write_setfields = htonll(OFPXMT12_MASK); |
2503 | ots[i].apply_setfields = htonll(OFPXMT12_MASK); | |
2504 | ots[i].metadata_match = htonll(UINT64_MAX); | |
2505 | ots[i].metadata_write = htonll(UINT64_MAX); | |
2506 | ots[i].instructions = htonl(OFPIT11_ALL); | |
2507 | ots[i].config = htonl(OFPTC11_TABLE_MISS_MASK); | |
6c1491fb | 2508 | ots[i].max_entries = htonl(1000000); /* An arbitrary big number. */ |
d0918789 | 2509 | ots[i].active_count = htonl(classifier_count(&p->tables[i].cls)); |
6c1491fb | 2510 | } |
064af421 | 2511 | |
6c1491fb | 2512 | p->ofproto_class->get_tables(p, ots); |
064af421 | 2513 | |
c2f0373a BP |
2514 | /* Post-process the tables, dropping hidden tables. */ |
2515 | n_tables = p->n_tables; | |
254750ce BP |
2516 | for (i = 0; i < p->n_tables; i++) { |
2517 | const struct oftable *table = &p->tables[i]; | |
2518 | ||
c2f0373a BP |
2519 | if (table->flags & OFTABLE_HIDDEN) { |
2520 | n_tables = i; | |
2521 | break; | |
2522 | } | |
2523 | ||
254750ce BP |
2524 | if (table->name) { |
2525 | ovs_strzcpy(ots[i].name, table->name, sizeof ots[i].name); | |
2526 | } | |
2527 | ||
2528 | if (table->max_flows < ntohl(ots[i].max_entries)) { | |
2529 | ots[i].max_entries = htonl(table->max_flows); | |
2530 | } | |
2531 | } | |
2532 | ||
c2f0373a | 2533 | msg = ofputil_encode_table_stats_reply(ots, n_tables, request); |
b0421aa2 | 2534 | ofconn_send_reply(ofconn, msg); |
307975da SH |
2535 | |
2536 | free(ots); | |
2537 | ||
064af421 BP |
2538 | return 0; |
2539 | } | |
2540 | ||
abaad8cf | 2541 | static void |
63f2140a | 2542 | append_port_stat(struct ofport *port, struct list *replies) |
abaad8cf | 2543 | { |
f8e4867e | 2544 | struct ofputil_port_stats ops = { .port_no = port->pp.port_no }; |
abaad8cf | 2545 | |
d295e8e9 JP |
2546 | /* Intentionally ignore return value, since errors will set |
2547 | * 'stats' to all-1s, which is correct for OpenFlow, and | |
abaad8cf | 2548 | * netdev_get_stats() will log errors. */ |
f8e4867e SH |
2549 | ofproto_port_get_stats(port, &ops.stats); |
2550 | ||
2551 | ofputil_append_port_stat(replies, &ops); | |
abaad8cf JP |
2552 | } |
2553 | ||
90bf1e07 | 2554 | static enum ofperr |
63f2140a | 2555 | handle_port_stats_request(struct ofconn *ofconn, |
982697a4 | 2556 | const struct ofp_header *request) |
064af421 | 2557 | { |
64ff1d96 | 2558 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 | 2559 | struct ofport *port; |
63f2140a | 2560 | struct list replies; |
f8e4867e SH |
2561 | uint16_t port_no; |
2562 | enum ofperr error; | |
2563 | ||
2564 | error = ofputil_decode_port_stats_request(request, &port_no); | |
2565 | if (error) { | |
2566 | return error; | |
2567 | } | |
064af421 | 2568 | |
982697a4 | 2569 | ofpmp_init(&replies, request); |
7f05e7ab | 2570 | if (port_no != OFPP_ANY) { |
f8e4867e | 2571 | port = ofproto_get_port(p, port_no); |
abaad8cf | 2572 | if (port) { |
63f2140a | 2573 | append_port_stat(port, &replies); |
abaad8cf JP |
2574 | } |
2575 | } else { | |
4e8e4213 | 2576 | HMAP_FOR_EACH (port, hmap_node, &p->ports) { |
63f2140a | 2577 | append_port_stat(port, &replies); |
abaad8cf | 2578 | } |
064af421 BP |
2579 | } |
2580 | ||
63f2140a | 2581 | ofconn_send_replies(ofconn, &replies); |
064af421 BP |
2582 | return 0; |
2583 | } | |
2584 | ||
2be393ed JP |
2585 | static enum ofperr |
2586 | handle_port_desc_stats_request(struct ofconn *ofconn, | |
982697a4 | 2587 | const struct ofp_header *request) |
2be393ed JP |
2588 | { |
2589 | struct ofproto *p = ofconn_get_ofproto(ofconn); | |
2e3fa633 | 2590 | enum ofp_version version; |
2be393ed JP |
2591 | struct ofport *port; |
2592 | struct list replies; | |
2593 | ||
982697a4 | 2594 | ofpmp_init(&replies, request); |
2be393ed | 2595 | |
2e3fa633 | 2596 | version = ofputil_protocol_to_ofp_version(ofconn_get_protocol(ofconn)); |
2be393ed | 2597 | HMAP_FOR_EACH (port, hmap_node, &p->ports) { |
2e3fa633 | 2598 | ofputil_append_port_desc_stats_reply(version, &port->pp, &replies); |
2be393ed JP |
2599 | } |
2600 | ||
2601 | ofconn_send_replies(ofconn, &replies); | |
2602 | return 0; | |
2603 | } | |
2604 | ||
c6ebb8fb | 2605 | static void |
f27f2134 BP |
2606 | calc_flow_duration__(long long int start, long long int now, |
2607 | uint32_t *sec, uint32_t *nsec) | |
c6ebb8fb | 2608 | { |
f27f2134 | 2609 | long long int msecs = now - start; |
588cd7b5 BP |
2610 | *sec = msecs / 1000; |
2611 | *nsec = (msecs % 1000) * (1000 * 1000); | |
2612 | } | |
2613 | ||
48266274 BP |
2614 | /* Checks whether 'table_id' is 0xff or a valid table ID in 'ofproto'. Returns |
2615 | * 0 if 'table_id' is OK, otherwise an OpenFlow error code. */ | |
90bf1e07 | 2616 | static enum ofperr |
48266274 BP |
2617 | check_table_id(const struct ofproto *ofproto, uint8_t table_id) |
2618 | { | |
2619 | return (table_id == 0xff || table_id < ofproto->n_tables | |
2620 | ? 0 | |
c22c56bd | 2621 | : OFPERR_OFPBRC_BAD_TABLE_ID); |
48266274 BP |
2622 | |
2623 | } | |
2624 | ||
5c67e4af | 2625 | static struct oftable * |
d4ce8a49 | 2626 | next_visible_table(const struct ofproto *ofproto, uint8_t table_id) |
5c67e4af BP |
2627 | { |
2628 | struct oftable *table; | |
2629 | ||
2630 | for (table = &ofproto->tables[table_id]; | |
2631 | table < &ofproto->tables[ofproto->n_tables]; | |
2632 | table++) { | |
2633 | if (!(table->flags & OFTABLE_HIDDEN)) { | |
2634 | return table; | |
2635 | } | |
2636 | } | |
2637 | ||
2638 | return NULL; | |
2639 | } | |
2640 | ||
d0918789 | 2641 | static struct oftable * |
d4ce8a49 | 2642 | first_matching_table(const struct ofproto *ofproto, uint8_t table_id) |
064af421 | 2643 | { |
6c1491fb | 2644 | if (table_id == 0xff) { |
5c67e4af | 2645 | return next_visible_table(ofproto, 0); |
6c1491fb BP |
2646 | } else if (table_id < ofproto->n_tables) { |
2647 | return &ofproto->tables[table_id]; | |
a02e5331 | 2648 | } else { |
6c1491fb | 2649 | return NULL; |
a02e5331 | 2650 | } |
064af421 BP |
2651 | } |
2652 | ||
d0918789 | 2653 | static struct oftable * |
d4ce8a49 BP |
2654 | next_matching_table(const struct ofproto *ofproto, |
2655 | const struct oftable *table, uint8_t table_id) | |
6c1491fb | 2656 | { |
5c67e4af BP |
2657 | return (table_id == 0xff |
2658 | ? next_visible_table(ofproto, (table - ofproto->tables) + 1) | |
6c1491fb BP |
2659 | : NULL); |
2660 | } | |
2661 | ||
d0918789 | 2662 | /* Assigns TABLE to each oftable, in turn, that matches TABLE_ID in OFPROTO: |
6c1491fb BP |
2663 | * |
2664 | * - If TABLE_ID is 0xff, this iterates over every classifier table in | |
5c67e4af | 2665 | * OFPROTO, skipping tables marked OFTABLE_HIDDEN. |
6c1491fb BP |
2666 | * |
2667 | * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates | |
5c67e4af BP |
2668 | * only once, for that table. (This can be used to access tables marked |
2669 | * OFTABLE_HIDDEN.) | |
6c1491fb | 2670 | * |
48266274 BP |
2671 | * - Otherwise, TABLE_ID isn't valid for OFPROTO, so the loop won't be |
2672 | * entered at all. (Perhaps you should have validated TABLE_ID with | |
2673 | * check_table_id().) | |
6c1491fb BP |
2674 | * |
2675 | * All parameters are evaluated multiple times. | |
2676 | */ | |
d0918789 BP |
2677 | #define FOR_EACH_MATCHING_TABLE(TABLE, TABLE_ID, OFPROTO) \ |
2678 | for ((TABLE) = first_matching_table(OFPROTO, TABLE_ID); \ | |
2679 | (TABLE) != NULL; \ | |
2680 | (TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID)) | |
6c1491fb | 2681 | |
9ed18e46 BP |
2682 | /* Searches 'ofproto' for rules in table 'table_id' (or in all tables, if |
2683 | * 'table_id' is 0xff) that match 'match' in the "loose" way required for | |
2684 | * OpenFlow OFPFC_MODIFY and OFPFC_DELETE requests and puts them on list | |
2685 | * 'rules'. | |
2686 | * | |
7f05e7ab | 2687 | * If 'out_port' is anything other than OFPP_ANY, then only rules that output |
9ed18e46 BP |
2688 | * to 'out_port' are included. |
2689 | * | |
2690 | * Hidden rules are always omitted. | |
2691 | * | |
2692 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 2693 | static enum ofperr |
9ed18e46 | 2694 | collect_rules_loose(struct ofproto *ofproto, uint8_t table_id, |
81a76618 | 2695 | const struct match *match, |
e729e793 JP |
2696 | ovs_be64 cookie, ovs_be64 cookie_mask, |
2697 | uint16_t out_port, struct list *rules) | |
9ed18e46 | 2698 | { |
d0918789 | 2699 | struct oftable *table; |
81a76618 | 2700 | struct cls_rule cr; |
90bf1e07 | 2701 | enum ofperr error; |
48266274 BP |
2702 | |
2703 | error = check_table_id(ofproto, table_id); | |
2704 | if (error) { | |
2705 | return error; | |
2706 | } | |
9ed18e46 BP |
2707 | |
2708 | list_init(rules); | |
81a76618 | 2709 | cls_rule_init(&cr, match, 0); |
d0918789 | 2710 | FOR_EACH_MATCHING_TABLE (table, table_id, ofproto) { |
9ed18e46 BP |
2711 | struct cls_cursor cursor; |
2712 | struct rule *rule; | |
2713 | ||
81a76618 | 2714 | cls_cursor_init(&cursor, &table->cls, &cr); |
9ed18e46 | 2715 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
7ee20df1 | 2716 | if (rule->pending) { |
48d28ac1 BP |
2717 | error = OFPROTO_POSTPONE; |
2718 | goto exit; | |
7ee20df1 | 2719 | } |
2b07c8b1 BP |
2720 | if (!ofproto_rule_is_hidden(rule) |
2721 | && ofproto_rule_has_out_port(rule, out_port) | |
e729e793 | 2722 | && !((rule->flow_cookie ^ cookie) & cookie_mask)) { |
9ed18e46 BP |
2723 | list_push_back(rules, &rule->ofproto_node); |
2724 | } | |
2725 | } | |
2726 | } | |
48d28ac1 BP |
2727 | |
2728 | exit: | |
2729 | cls_rule_destroy(&cr); | |
2730 | return error; | |
9ed18e46 BP |
2731 | } |
2732 | ||
2733 | /* Searches 'ofproto' for rules in table 'table_id' (or in all tables, if | |
2734 | * 'table_id' is 0xff) that match 'match' in the "strict" way required for | |
2735 | * OpenFlow OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests and puts them | |
2736 | * on list 'rules'. | |
2737 | * | |
7f05e7ab | 2738 | * If 'out_port' is anything other than OFPP_ANY, then only rules that output |
9ed18e46 BP |
2739 | * to 'out_port' are included. |
2740 | * | |
2741 | * Hidden rules are always omitted. | |
2742 | * | |
2743 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 2744 | static enum ofperr |
9ed18e46 | 2745 | collect_rules_strict(struct ofproto *ofproto, uint8_t table_id, |
81a76618 | 2746 | const struct match *match, unsigned int priority, |
e729e793 JP |
2747 | ovs_be64 cookie, ovs_be64 cookie_mask, |
2748 | uint16_t out_port, struct list *rules) | |
9ed18e46 | 2749 | { |
d0918789 | 2750 | struct oftable *table; |
81a76618 | 2751 | struct cls_rule cr; |
48266274 BP |
2752 | int error; |
2753 | ||
2754 | error = check_table_id(ofproto, table_id); | |
2755 | if (error) { | |
2756 | return error; | |
2757 | } | |
9ed18e46 BP |
2758 | |
2759 | list_init(rules); | |
81a76618 | 2760 | cls_rule_init(&cr, match, priority); |
d0918789 | 2761 | FOR_EACH_MATCHING_TABLE (table, table_id, ofproto) { |
9ed18e46 BP |
2762 | struct rule *rule; |
2763 | ||
d0918789 | 2764 | rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls, |
81a76618 | 2765 | &cr)); |
9ed18e46 | 2766 | if (rule) { |
7ee20df1 | 2767 | if (rule->pending) { |
48d28ac1 BP |
2768 | error = OFPROTO_POSTPONE; |
2769 | goto exit; | |
7ee20df1 | 2770 | } |
2b07c8b1 BP |
2771 | if (!ofproto_rule_is_hidden(rule) |
2772 | && ofproto_rule_has_out_port(rule, out_port) | |
e729e793 | 2773 | && !((rule->flow_cookie ^ cookie) & cookie_mask)) { |
9ed18e46 BP |
2774 | list_push_back(rules, &rule->ofproto_node); |
2775 | } | |
2776 | } | |
2777 | } | |
48d28ac1 BP |
2778 | |
2779 | exit: | |
2780 | cls_rule_destroy(&cr); | |
9ed18e46 BP |
2781 | return 0; |
2782 | } | |
2783 | ||
f27f2134 BP |
2784 | /* Returns 'age_ms' (a duration in milliseconds), converted to seconds and |
2785 | * forced into the range of a uint16_t. */ | |
2786 | static int | |
2787 | age_secs(long long int age_ms) | |
2788 | { | |
2789 | return (age_ms < 0 ? 0 | |
2790 | : age_ms >= UINT16_MAX * 1000 ? UINT16_MAX | |
2791 | : (unsigned int) age_ms / 1000); | |
2792 | } | |
2793 | ||
90bf1e07 | 2794 | static enum ofperr |
63f2140a | 2795 | handle_flow_stats_request(struct ofconn *ofconn, |
982697a4 | 2796 | const struct ofp_header *request) |
064af421 | 2797 | { |
64ff1d96 | 2798 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 2799 | struct ofputil_flow_stats_request fsr; |
63f2140a | 2800 | struct list replies; |
9ed18e46 BP |
2801 | struct list rules; |
2802 | struct rule *rule; | |
90bf1e07 | 2803 | enum ofperr error; |
09246b99 | 2804 | |
982697a4 | 2805 | error = ofputil_decode_flow_stats_request(&fsr, request); |
09246b99 BP |
2806 | if (error) { |
2807 | return error; | |
2808 | } | |
2809 | ||
9ed18e46 | 2810 | error = collect_rules_loose(ofproto, fsr.table_id, &fsr.match, |
e729e793 | 2811 | fsr.cookie, fsr.cookie_mask, |
9ed18e46 BP |
2812 | fsr.out_port, &rules); |
2813 | if (error) { | |
2814 | return error; | |
2815 | } | |
5ecc9d81 | 2816 | |
982697a4 | 2817 | ofpmp_init(&replies, request); |
9ed18e46 | 2818 | LIST_FOR_EACH (rule, ofproto_node, &rules) { |
f27f2134 | 2819 | long long int now = time_msec(); |
9ed18e46 BP |
2820 | struct ofputil_flow_stats fs; |
2821 | ||
5cb7a798 | 2822 | minimatch_expand(&rule->cr.match, &fs.match); |
81a76618 | 2823 | fs.priority = rule->cr.priority; |
9ed18e46 BP |
2824 | fs.cookie = rule->flow_cookie; |
2825 | fs.table_id = rule->table_id; | |
f27f2134 | 2826 | calc_flow_duration__(rule->created, now, &fs.duration_sec, |
9ed18e46 BP |
2827 | &fs.duration_nsec); |
2828 | fs.idle_timeout = rule->idle_timeout; | |
2829 | fs.hard_timeout = rule->hard_timeout; | |
f27f2134 BP |
2830 | fs.idle_age = age_secs(now - rule->used); |
2831 | fs.hard_age = age_secs(now - rule->modified); | |
9ed18e46 BP |
2832 | ofproto->ofproto_class->rule_get_stats(rule, &fs.packet_count, |
2833 | &fs.byte_count); | |
f25d0cf3 BP |
2834 | fs.ofpacts = rule->ofpacts; |
2835 | fs.ofpacts_len = rule->ofpacts_len; | |
2e1ae200 JR |
2836 | fs.flags = 0; |
2837 | if (rule->send_flow_removed) { | |
2838 | fs.flags |= OFPFF_SEND_FLOW_REM; | |
2839 | /* FIXME: Implement OF 1.3 flags OFPFF13_NO_PKT_COUNTS | |
2840 | and OFPFF13_NO_BYT_COUNTS */ | |
2841 | } | |
9ed18e46 | 2842 | ofputil_append_flow_stats_reply(&fs, &replies); |
3c4486a5 | 2843 | } |
63f2140a | 2844 | ofconn_send_replies(ofconn, &replies); |
5ecc9d81 | 2845 | |
09246b99 BP |
2846 | return 0; |
2847 | } | |
2848 | ||
4f2cad2c | 2849 | static void |
3394b5b6 | 2850 | flow_stats_ds(struct rule *rule, struct ds *results) |
4f2cad2c | 2851 | { |
4f2cad2c | 2852 | uint64_t packet_count, byte_count; |
4f2cad2c | 2853 | |
abe529af BP |
2854 | rule->ofproto->ofproto_class->rule_get_stats(rule, |
2855 | &packet_count, &byte_count); | |
4f2cad2c | 2856 | |
6c1491fb BP |
2857 | if (rule->table_id != 0) { |
2858 | ds_put_format(results, "table_id=%"PRIu8", ", rule->table_id); | |
2859 | } | |
4f2cad2c JP |
2860 | ds_put_format(results, "duration=%llds, ", |
2861 | (time_msec() - rule->created) / 1000); | |
52ae00b3 | 2862 | ds_put_format(results, "priority=%u, ", rule->cr.priority); |
4f2cad2c JP |
2863 | ds_put_format(results, "n_packets=%"PRIu64", ", packet_count); |
2864 | ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count); | |
cb833cf6 | 2865 | cls_rule_format(&rule->cr, results); |
a5df0e72 | 2866 | ds_put_char(results, ','); |
aa30ae4e | 2867 | ofpacts_format(rule->ofpacts, rule->ofpacts_len, results); |
4f2cad2c JP |
2868 | ds_put_cstr(results, "\n"); |
2869 | } | |
2870 | ||
d295e8e9 | 2871 | /* Adds a pretty-printed description of all flows to 'results', including |
ee8b231c | 2872 | * hidden flows (e.g., set up by in-band control). */ |
4f2cad2c JP |
2873 | void |
2874 | ofproto_get_all_flows(struct ofproto *p, struct ds *results) | |
2875 | { | |
d0918789 | 2876 | struct oftable *table; |
6c1491fb | 2877 | |
d0918789 | 2878 | OFPROTO_FOR_EACH_TABLE (table, p) { |
6c1491fb BP |
2879 | struct cls_cursor cursor; |
2880 | struct rule *rule; | |
064af421 | 2881 | |
d0918789 | 2882 | cls_cursor_init(&cursor, &table->cls, NULL); |
6c1491fb BP |
2883 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
2884 | flow_stats_ds(rule, results); | |
2885 | } | |
064af421 | 2886 | } |
064af421 BP |
2887 | } |
2888 | ||
b5827b24 BP |
2889 | /* Obtains the NetFlow engine type and engine ID for 'ofproto' into |
2890 | * '*engine_type' and '*engine_id', respectively. */ | |
2891 | void | |
2892 | ofproto_get_netflow_ids(const struct ofproto *ofproto, | |
2893 | uint8_t *engine_type, uint8_t *engine_id) | |
2894 | { | |
abe529af | 2895 | ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id); |
b5827b24 BP |
2896 | } |
2897 | ||
9a9e3786 BP |
2898 | /* Checks the status of CFM configured on 'ofp_port' within 'ofproto'. Returns |
2899 | * true if the port's CFM status was successfully stored into '*status'. | |
2900 | * Returns false if the port did not have CFM configured, in which case | |
2901 | * '*status' is indeterminate. | |
2902 | * | |
2903 | * The caller must provide and owns '*status', but it does not own and must not | |
2904 | * modify or free the array returned in 'status->rmps'. */ | |
2905 | bool | |
2906 | ofproto_port_get_cfm_status(const struct ofproto *ofproto, uint16_t ofp_port, | |
2907 | struct ofproto_cfm_status *status) | |
3967a833 MM |
2908 | { |
2909 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
9a9e3786 BP |
2910 | return (ofport |
2911 | && ofproto->ofproto_class->get_cfm_status | |
2912 | && ofproto->ofproto_class->get_cfm_status(ofport, status)); | |
3967a833 MM |
2913 | } |
2914 | ||
90bf1e07 | 2915 | static enum ofperr |
76c93b22 | 2916 | handle_aggregate_stats_request(struct ofconn *ofconn, |
982697a4 | 2917 | const struct ofp_header *oh) |
27d34fce | 2918 | { |
76c93b22 | 2919 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 2920 | struct ofputil_flow_stats_request request; |
76c93b22 | 2921 | struct ofputil_aggregate_stats stats; |
5e9d0469 | 2922 | bool unknown_packets, unknown_bytes; |
76c93b22 | 2923 | struct ofpbuf *reply; |
9ed18e46 BP |
2924 | struct list rules; |
2925 | struct rule *rule; | |
90bf1e07 | 2926 | enum ofperr error; |
27d34fce | 2927 | |
982697a4 | 2928 | error = ofputil_decode_flow_stats_request(&request, oh); |
76c93b22 BP |
2929 | if (error) { |
2930 | return error; | |
2931 | } | |
5ecc9d81 | 2932 | |
9ed18e46 | 2933 | error = collect_rules_loose(ofproto, request.table_id, &request.match, |
e729e793 | 2934 | request.cookie, request.cookie_mask, |
9ed18e46 BP |
2935 | request.out_port, &rules); |
2936 | if (error) { | |
2937 | return error; | |
2938 | } | |
3c4486a5 | 2939 | |
9ed18e46 | 2940 | memset(&stats, 0, sizeof stats); |
5e9d0469 | 2941 | unknown_packets = unknown_bytes = false; |
9ed18e46 BP |
2942 | LIST_FOR_EACH (rule, ofproto_node, &rules) { |
2943 | uint64_t packet_count; | |
2944 | uint64_t byte_count; | |
5ecc9d81 | 2945 | |
9ed18e46 BP |
2946 | ofproto->ofproto_class->rule_get_stats(rule, &packet_count, |
2947 | &byte_count); | |
5ecc9d81 | 2948 | |
5e9d0469 BP |
2949 | if (packet_count == UINT64_MAX) { |
2950 | unknown_packets = true; | |
2951 | } else { | |
2952 | stats.packet_count += packet_count; | |
2953 | } | |
2954 | ||
2955 | if (byte_count == UINT64_MAX) { | |
2956 | unknown_bytes = true; | |
2957 | } else { | |
2958 | stats.byte_count += byte_count; | |
2959 | } | |
2960 | ||
9ed18e46 | 2961 | stats.flow_count++; |
3c4486a5 | 2962 | } |
5e9d0469 BP |
2963 | if (unknown_packets) { |
2964 | stats.packet_count = UINT64_MAX; | |
2965 | } | |
2966 | if (unknown_bytes) { | |
2967 | stats.byte_count = UINT64_MAX; | |
2968 | } | |
27d34fce | 2969 | |
982697a4 | 2970 | reply = ofputil_encode_aggregate_stats_reply(&stats, oh); |
76c93b22 | 2971 | ofconn_send_reply(ofconn, reply); |
09246b99 BP |
2972 | |
2973 | return 0; | |
2974 | } | |
2975 | ||
c1c9c9c4 | 2976 | struct queue_stats_cbdata { |
ca0f572c | 2977 | struct ofport *ofport; |
63f2140a | 2978 | struct list replies; |
c1c9c9c4 BP |
2979 | }; |
2980 | ||
2981 | static void | |
db9220c3 | 2982 | put_queue_stats(struct queue_stats_cbdata *cbdata, uint32_t queue_id, |
c1c9c9c4 BP |
2983 | const struct netdev_queue_stats *stats) |
2984 | { | |
c1c9c9c4 | 2985 | |
64626975 SH |
2986 | struct ofputil_queue_stats oqs = { |
2987 | .port_no = cbdata->ofport->pp.port_no, | |
2988 | .queue_id = queue_id, | |
2989 | .stats = *stats, | |
2990 | }; | |
2991 | ofputil_append_queue_stat(&cbdata->replies, &oqs); | |
c1c9c9c4 BP |
2992 | } |
2993 | ||
2994 | static void | |
db9220c3 | 2995 | handle_queue_stats_dump_cb(uint32_t queue_id, |
c1c9c9c4 BP |
2996 | struct netdev_queue_stats *stats, |
2997 | void *cbdata_) | |
2998 | { | |
2999 | struct queue_stats_cbdata *cbdata = cbdata_; | |
3000 | ||
3001 | put_queue_stats(cbdata, queue_id, stats); | |
3002 | } | |
3003 | ||
0414d158 | 3004 | static enum ofperr |
ca0f572c | 3005 | handle_queue_stats_for_port(struct ofport *port, uint32_t queue_id, |
c1c9c9c4 BP |
3006 | struct queue_stats_cbdata *cbdata) |
3007 | { | |
ca0f572c | 3008 | cbdata->ofport = port; |
c1c9c9c4 BP |
3009 | if (queue_id == OFPQ_ALL) { |
3010 | netdev_dump_queue_stats(port->netdev, | |
3011 | handle_queue_stats_dump_cb, cbdata); | |
3012 | } else { | |
3013 | struct netdev_queue_stats stats; | |
3014 | ||
1ac788f6 BP |
3015 | if (!netdev_get_queue_stats(port->netdev, queue_id, &stats)) { |
3016 | put_queue_stats(cbdata, queue_id, &stats); | |
0414d158 BP |
3017 | } else { |
3018 | return OFPERR_OFPQOFC_BAD_QUEUE; | |
1ac788f6 | 3019 | } |
c1c9c9c4 | 3020 | } |
0414d158 | 3021 | return 0; |
c1c9c9c4 BP |
3022 | } |
3023 | ||
90bf1e07 | 3024 | static enum ofperr |
63f2140a | 3025 | handle_queue_stats_request(struct ofconn *ofconn, |
982697a4 | 3026 | const struct ofp_header *rq) |
c1c9c9c4 | 3027 | { |
64ff1d96 | 3028 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
c1c9c9c4 | 3029 | struct queue_stats_cbdata cbdata; |
0414d158 | 3030 | struct ofport *port; |
0414d158 | 3031 | enum ofperr error; |
64626975 | 3032 | struct ofputil_queue_stats_request oqsr; |
c1c9c9c4 | 3033 | |
c1c9c9c4 BP |
3034 | COVERAGE_INC(ofproto_queue_req); |
3035 | ||
982697a4 | 3036 | ofpmp_init(&cbdata.replies, rq); |
c1c9c9c4 | 3037 | |
64626975 SH |
3038 | error = ofputil_decode_queue_stats_request(rq, &oqsr); |
3039 | if (error) { | |
3040 | return error; | |
3041 | } | |
3042 | ||
7f05e7ab | 3043 | if (oqsr.port_no == OFPP_ANY) { |
0414d158 | 3044 | error = OFPERR_OFPQOFC_BAD_QUEUE; |
4e8e4213 | 3045 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
64626975 | 3046 | if (!handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata)) { |
0414d158 BP |
3047 | error = 0; |
3048 | } | |
c1c9c9c4 | 3049 | } |
0414d158 | 3050 | } else { |
64626975 | 3051 | port = ofproto_get_port(ofproto, oqsr.port_no); |
0414d158 | 3052 | error = (port |
64626975 | 3053 | ? handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata) |
0414d158 BP |
3054 | : OFPERR_OFPQOFC_BAD_PORT); |
3055 | } | |
3056 | if (!error) { | |
3057 | ofconn_send_replies(ofconn, &cbdata.replies); | |
c1c9c9c4 | 3058 | } else { |
63f2140a | 3059 | ofpbuf_list_delete(&cbdata.replies); |
c1c9c9c4 | 3060 | } |
c1c9c9c4 | 3061 | |
0414d158 | 3062 | return error; |
c1c9c9c4 | 3063 | } |
7ee20df1 BP |
3064 | |
3065 | static bool | |
3066 | is_flow_deletion_pending(const struct ofproto *ofproto, | |
3067 | const struct cls_rule *cls_rule, | |
3068 | uint8_t table_id) | |
3069 | { | |
3070 | if (!hmap_is_empty(&ofproto->deletions)) { | |
3071 | struct ofoperation *op; | |
3072 | ||
3073 | HMAP_FOR_EACH_WITH_HASH (op, hmap_node, | |
3074 | cls_rule_hash(cls_rule, table_id), | |
3075 | &ofproto->deletions) { | |
3076 | if (cls_rule_equal(cls_rule, &op->rule->cr)) { | |
3077 | return true; | |
3078 | } | |
3079 | } | |
3080 | } | |
3081 | ||
3082 | return false; | |
3083 | } | |
3084 | ||
79eee1eb BP |
3085 | /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT |
3086 | * in which no matching flow already exists in the flow table. | |
3087 | * | |
3088 | * Adds the flow specified by 'ofm', which is followed by 'n_actions' | |
75a75043 | 3089 | * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow |
90bf1e07 BP |
3090 | * error code on failure, or OFPROTO_POSTPONE if the operation cannot be |
3091 | * initiated now but may be retried later. | |
79eee1eb | 3092 | * |
f25d0cf3 BP |
3093 | * Upon successful return, takes ownership of 'fm->ofpacts'. On failure, |
3094 | * ownership remains with the caller. | |
3095 | * | |
79eee1eb BP |
3096 | * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id, |
3097 | * if any. */ | |
90bf1e07 | 3098 | static enum ofperr |
a9a2da38 | 3099 | add_flow(struct ofproto *ofproto, struct ofconn *ofconn, |
1b9d6420 | 3100 | const struct ofputil_flow_mod *fm, const struct ofp_header *request) |
064af421 | 3101 | { |
d0918789 | 3102 | struct oftable *table; |
7ee20df1 BP |
3103 | struct ofopgroup *group; |
3104 | struct rule *victim; | |
81a76618 | 3105 | struct cls_rule cr; |
064af421 | 3106 | struct rule *rule; |
064af421 BP |
3107 | int error; |
3108 | ||
48266274 BP |
3109 | error = check_table_id(ofproto, fm->table_id); |
3110 | if (error) { | |
3111 | return error; | |
3112 | } | |
3113 | ||
7ee20df1 BP |
3114 | /* Pick table. */ |
3115 | if (fm->table_id == 0xff) { | |
3116 | uint8_t table_id; | |
13521ff5 | 3117 | if (ofproto->ofproto_class->rule_choose_table) { |
81a76618 BP |
3118 | error = ofproto->ofproto_class->rule_choose_table(ofproto, |
3119 | &fm->match, | |
7ee20df1 BP |
3120 | &table_id); |
3121 | if (error) { | |
3122 | return error; | |
3123 | } | |
cb22974d | 3124 | ovs_assert(table_id < ofproto->n_tables); |
7ee20df1 BP |
3125 | table = &ofproto->tables[table_id]; |
3126 | } else { | |
3127 | table = &ofproto->tables[0]; | |
3128 | } | |
3129 | } else if (fm->table_id < ofproto->n_tables) { | |
3130 | table = &ofproto->tables[fm->table_id]; | |
3131 | } else { | |
c22c56bd | 3132 | return OFPERR_OFPBRC_BAD_TABLE_ID; |
064af421 BP |
3133 | } |
3134 | ||
5c67e4af BP |
3135 | if (table->flags & OFTABLE_READONLY) { |
3136 | return OFPERR_OFPBRC_EPERM; | |
3137 | } | |
3138 | ||
81a76618 BP |
3139 | /* Allocate new rule and initialize classifier rule. */ |
3140 | rule = ofproto->ofproto_class->rule_alloc(); | |
3141 | if (!rule) { | |
3142 | VLOG_WARN_RL(&rl, "%s: failed to create rule (%s)", | |
3143 | ofproto->name, strerror(error)); | |
3144 | return ENOMEM; | |
63adcc7d | 3145 | } |
81a76618 | 3146 | cls_rule_init(&rule->cr, &fm->match, fm->priority); |
63adcc7d | 3147 | |
7ee20df1 | 3148 | /* Serialize against pending deletion. */ |
81a76618 | 3149 | if (is_flow_deletion_pending(ofproto, &cr, table - ofproto->tables)) { |
48d28ac1 | 3150 | cls_rule_destroy(&rule->cr); |
81a76618 | 3151 | ofproto->ofproto_class->rule_dealloc(rule); |
7ee20df1 | 3152 | return OFPROTO_POSTPONE; |
afe75089 | 3153 | } |
064af421 | 3154 | |
81a76618 BP |
3155 | /* Check for overlap, if requested. */ |
3156 | if (fm->flags & OFPFF_CHECK_OVERLAP | |
3157 | && classifier_rule_overlaps(&table->cls, &rule->cr)) { | |
48d28ac1 | 3158 | cls_rule_destroy(&rule->cr); |
81a76618 BP |
3159 | ofproto->ofproto_class->rule_dealloc(rule); |
3160 | return OFPERR_OFPFMFC_OVERLAP; | |
7ee20df1 | 3161 | } |
81a76618 | 3162 | |
2e1ae200 JR |
3163 | /* FIXME: Implement OFPFF12_RESET_COUNTS */ |
3164 | ||
7ee20df1 | 3165 | rule->ofproto = ofproto; |
7ee20df1 | 3166 | rule->pending = NULL; |
623e1caf | 3167 | rule->flow_cookie = fm->new_cookie; |
1745cd08 | 3168 | rule->created = rule->modified = rule->used = time_msec(); |
7ee20df1 BP |
3169 | rule->idle_timeout = fm->idle_timeout; |
3170 | rule->hard_timeout = fm->hard_timeout; | |
3171 | rule->table_id = table - ofproto->tables; | |
3172 | rule->send_flow_removed = (fm->flags & OFPFF_SEND_FLOW_REM) != 0; | |
2e1ae200 JR |
3173 | /* FIXME: Implement OF 1.3 flags OFPFF13_NO_PKT_COUNTS |
3174 | and OFPFF13_NO_BYT_COUNTS */ | |
f25d0cf3 BP |
3175 | rule->ofpacts = xmemdup(fm->ofpacts, fm->ofpacts_len); |
3176 | rule->ofpacts_len = fm->ofpacts_len; | |
254750ce BP |
3177 | rule->evictable = true; |
3178 | rule->eviction_group = NULL; | |
e503cc19 | 3179 | list_init(&rule->expirable); |
2b07c8b1 BP |
3180 | rule->monitor_flags = 0; |
3181 | rule->add_seqno = 0; | |
3182 | rule->modify_seqno = 0; | |
7ee20df1 BP |
3183 | |
3184 | /* Insert new rule. */ | |
d0918789 | 3185 | victim = oftable_replace_rule(rule); |
5c67e4af BP |
3186 | if (victim && !rule_is_modifiable(victim)) { |
3187 | error = OFPERR_OFPBRC_EPERM; | |
3188 | } else if (victim && victim->pending) { | |
7ee20df1 BP |
3189 | error = OFPROTO_POSTPONE; |
3190 | } else { | |
a7d94793 | 3191 | struct ofoperation *op; |
254750ce BP |
3192 | struct rule *evict; |
3193 | ||
3194 | if (classifier_count(&table->cls) > table->max_flows) { | |
3195 | bool was_evictable; | |
3196 | ||
3197 | was_evictable = rule->evictable; | |
3198 | rule->evictable = false; | |
3199 | evict = choose_rule_to_evict(table); | |
3200 | rule->evictable = was_evictable; | |
3201 | ||
3202 | if (!evict) { | |
be2b69d1 | 3203 | error = OFPERR_OFPFMFC_TABLE_FULL; |
254750ce BP |
3204 | goto exit; |
3205 | } else if (evict->pending) { | |
3206 | error = OFPROTO_POSTPONE; | |
3207 | goto exit; | |
3208 | } | |
3209 | } else { | |
3210 | evict = NULL; | |
3211 | } | |
3212 | ||
7024dffe | 3213 | group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id); |
2b07c8b1 | 3214 | op = ofoperation_create(group, rule, OFOPERATION_ADD, 0); |
a7d94793 | 3215 | op->victim = victim; |
7ee20df1 BP |
3216 | |
3217 | error = ofproto->ofproto_class->rule_construct(rule); | |
3218 | if (error) { | |
e615b0a3 | 3219 | op->group->n_running--; |
7ee20df1 | 3220 | ofoperation_destroy(rule->pending); |
254750ce BP |
3221 | } else if (evict) { |
3222 | delete_flow__(evict, group); | |
7ee20df1 BP |
3223 | } |
3224 | ofopgroup_submit(group); | |
064af421 | 3225 | } |
79eee1eb | 3226 | |
254750ce | 3227 | exit: |
7ee20df1 | 3228 | /* Back out if an error occurred. */ |
79eee1eb | 3229 | if (error) { |
d0918789 | 3230 | oftable_substitute_rule(rule, victim); |
7ee20df1 | 3231 | ofproto_rule_destroy__(rule); |
79eee1eb | 3232 | } |
7ee20df1 | 3233 | return error; |
064af421 | 3234 | } |
79eee1eb BP |
3235 | \f |
3236 | /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */ | |
064af421 | 3237 | |
9ed18e46 BP |
3238 | /* Modifies the rules listed in 'rules', changing their actions to match those |
3239 | * in 'fm'. | |
79eee1eb | 3240 | * |
9ed18e46 BP |
3241 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, |
3242 | * if any. | |
3243 | * | |
3244 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 3245 | static enum ofperr |
7024dffe BP |
3246 | modify_flows__(struct ofproto *ofproto, struct ofconn *ofconn, |
3247 | const struct ofputil_flow_mod *fm, | |
7ee20df1 | 3248 | const struct ofp_header *request, struct list *rules) |
79eee1eb | 3249 | { |
7ee20df1 | 3250 | struct ofopgroup *group; |
9ed18e46 | 3251 | struct rule *rule; |
5c67e4af | 3252 | enum ofperr error; |
79eee1eb | 3253 | |
7024dffe | 3254 | group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id); |
5c67e4af | 3255 | error = OFPERR_OFPBRC_EPERM; |
9ed18e46 | 3256 | LIST_FOR_EACH (rule, ofproto_node, rules) { |
08043761 BP |
3257 | struct ofoperation *op; |
3258 | bool actions_changed; | |
3259 | ovs_be64 new_cookie; | |
3260 | ||
2e1ae200 JR |
3261 | /* FIXME: Implement OFPFF12_RESET_COUNTS */ |
3262 | ||
5c67e4af BP |
3263 | if (rule_is_modifiable(rule)) { |
3264 | /* At least one rule is modifiable, don't report EPERM error. */ | |
3265 | error = 0; | |
3266 | } else { | |
3267 | continue; | |
3268 | } | |
3269 | ||
08043761 BP |
3270 | actions_changed = !ofpacts_equal(fm->ofpacts, fm->ofpacts_len, |
3271 | rule->ofpacts, rule->ofpacts_len); | |
3272 | new_cookie = (fm->new_cookie != htonll(UINT64_MAX) | |
3273 | ? fm->new_cookie | |
3274 | : rule->flow_cookie); | |
a7d94793 | 3275 | |
2b07c8b1 | 3276 | op = ofoperation_create(group, rule, OFOPERATION_MODIFY, 0); |
08043761 BP |
3277 | rule->flow_cookie = new_cookie; |
3278 | if (actions_changed) { | |
a7d94793 BP |
3279 | op->ofpacts = rule->ofpacts; |
3280 | op->ofpacts_len = rule->ofpacts_len; | |
f25d0cf3 BP |
3281 | rule->ofpacts = xmemdup(fm->ofpacts, fm->ofpacts_len); |
3282 | rule->ofpacts_len = fm->ofpacts_len; | |
3283 | rule->ofproto->ofproto_class->rule_modify_actions(rule); | |
308881af | 3284 | } else { |
08043761 | 3285 | ofoperation_complete(op, 0); |
623e1caf | 3286 | } |
5ecc9d81 | 3287 | } |
7ee20df1 | 3288 | ofopgroup_submit(group); |
79eee1eb | 3289 | |
5c67e4af | 3290 | return error; |
9ed18e46 BP |
3291 | } |
3292 | ||
9387b970 SH |
3293 | static enum ofperr |
3294 | modify_flows_add(struct ofproto *ofproto, struct ofconn *ofconn, | |
3295 | const struct ofputil_flow_mod *fm, | |
3296 | const struct ofp_header *request) | |
3297 | { | |
3298 | if (fm->cookie_mask != htonll(0) || fm->new_cookie == htonll(UINT64_MAX)) { | |
3299 | return 0; | |
3300 | } | |
3301 | return add_flow(ofproto, ofconn, fm, request); | |
3302 | } | |
3303 | ||
90bf1e07 BP |
3304 | /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on |
3305 | * failure. | |
9ed18e46 BP |
3306 | * |
3307 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, | |
3308 | * if any. */ | |
90bf1e07 | 3309 | static enum ofperr |
7024dffe | 3310 | modify_flows_loose(struct ofproto *ofproto, struct ofconn *ofconn, |
1b9d6420 | 3311 | const struct ofputil_flow_mod *fm, |
7ee20df1 | 3312 | const struct ofp_header *request) |
9ed18e46 | 3313 | { |
9ed18e46 BP |
3314 | struct list rules; |
3315 | int error; | |
3316 | ||
81a76618 | 3317 | error = collect_rules_loose(ofproto, fm->table_id, &fm->match, |
e729e793 | 3318 | fm->cookie, fm->cookie_mask, |
7f05e7ab | 3319 | OFPP_ANY, &rules); |
623e1caf JP |
3320 | if (error) { |
3321 | return error; | |
3322 | } else if (list_is_empty(&rules)) { | |
9387b970 | 3323 | return modify_flows_add(ofproto, ofconn, fm, request); |
623e1caf JP |
3324 | } else { |
3325 | return modify_flows__(ofproto, ofconn, fm, request, &rules); | |
3326 | } | |
79eee1eb BP |
3327 | } |
3328 | ||
3329 | /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error | |
90bf1e07 | 3330 | * code on failure. |
79eee1eb | 3331 | * |
9ed18e46 | 3332 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, |
79eee1eb | 3333 | * if any. */ |
90bf1e07 | 3334 | static enum ofperr |
7024dffe | 3335 | modify_flow_strict(struct ofproto *ofproto, struct ofconn *ofconn, |
1b9d6420 | 3336 | const struct ofputil_flow_mod *fm, |
7ee20df1 | 3337 | const struct ofp_header *request) |
79eee1eb | 3338 | { |
9ed18e46 | 3339 | struct list rules; |
6c1491fb BP |
3340 | int error; |
3341 | ||
81a76618 BP |
3342 | error = collect_rules_strict(ofproto, fm->table_id, &fm->match, |
3343 | fm->priority, fm->cookie, fm->cookie_mask, | |
7f05e7ab | 3344 | OFPP_ANY, &rules); |
623e1caf JP |
3345 | |
3346 | if (error) { | |
3347 | return error; | |
3348 | } else if (list_is_empty(&rules)) { | |
9387b970 | 3349 | return modify_flows_add(ofproto, ofconn, fm, request); |
623e1caf JP |
3350 | } else { |
3351 | return list_is_singleton(&rules) ? modify_flows__(ofproto, ofconn, | |
3352 | fm, request, &rules) | |
3353 | : 0; | |
3354 | } | |
79eee1eb | 3355 | } |
9ed18e46 BP |
3356 | \f |
3357 | /* OFPFC_DELETE implementation. */ | |
79eee1eb | 3358 | |
254750ce BP |
3359 | static void |
3360 | delete_flow__(struct rule *rule, struct ofopgroup *group) | |
3361 | { | |
3362 | struct ofproto *ofproto = rule->ofproto; | |
3363 | ||
3364 | ofproto_rule_send_removed(rule, OFPRR_DELETE); | |
3365 | ||
2b07c8b1 | 3366 | ofoperation_create(group, rule, OFOPERATION_DELETE, OFPRR_DELETE); |
254750ce BP |
3367 | oftable_remove_rule(rule); |
3368 | ofproto->ofproto_class->rule_destruct(rule); | |
3369 | } | |
3370 | ||
9ed18e46 BP |
3371 | /* Deletes the rules listed in 'rules'. |
3372 | * | |
3373 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 3374 | static enum ofperr |
7024dffe BP |
3375 | delete_flows__(struct ofproto *ofproto, struct ofconn *ofconn, |
3376 | const struct ofp_header *request, struct list *rules) | |
064af421 | 3377 | { |
9ed18e46 | 3378 | struct rule *rule, *next; |
7ee20df1 | 3379 | struct ofopgroup *group; |
79eee1eb | 3380 | |
7024dffe | 3381 | group = ofopgroup_create(ofproto, ofconn, request, UINT32_MAX); |
9ed18e46 | 3382 | LIST_FOR_EACH_SAFE (rule, next, ofproto_node, rules) { |
254750ce | 3383 | delete_flow__(rule, group); |
79eee1eb | 3384 | } |
7ee20df1 | 3385 | ofopgroup_submit(group); |
79eee1eb | 3386 | |
9ed18e46 | 3387 | return 0; |
79eee1eb | 3388 | } |
79eee1eb BP |
3389 | |
3390 | /* Implements OFPFC_DELETE. */ | |
90bf1e07 | 3391 | static enum ofperr |
7024dffe BP |
3392 | delete_flows_loose(struct ofproto *ofproto, struct ofconn *ofconn, |
3393 | const struct ofputil_flow_mod *fm, | |
7ee20df1 | 3394 | const struct ofp_header *request) |
79eee1eb | 3395 | { |
9ed18e46 | 3396 | struct list rules; |
90bf1e07 | 3397 | enum ofperr error; |
064af421 | 3398 | |
81a76618 | 3399 | error = collect_rules_loose(ofproto, fm->table_id, &fm->match, |
e729e793 JP |
3400 | fm->cookie, fm->cookie_mask, |
3401 | fm->out_port, &rules); | |
9ed18e46 | 3402 | return (error ? error |
7024dffe BP |
3403 | : !list_is_empty(&rules) ? delete_flows__(ofproto, ofconn, request, |
3404 | &rules) | |
9ed18e46 | 3405 | : 0); |
064af421 BP |
3406 | } |
3407 | ||
79eee1eb | 3408 | /* Implements OFPFC_DELETE_STRICT. */ |
90bf1e07 | 3409 | static enum ofperr |
7024dffe | 3410 | delete_flow_strict(struct ofproto *ofproto, struct ofconn *ofconn, |
1b9d6420 | 3411 | const struct ofputil_flow_mod *fm, |
7ee20df1 | 3412 | const struct ofp_header *request) |
79eee1eb | 3413 | { |
9ed18e46 | 3414 | struct list rules; |
90bf1e07 | 3415 | enum ofperr error; |
79eee1eb | 3416 | |
81a76618 BP |
3417 | error = collect_rules_strict(ofproto, fm->table_id, &fm->match, |
3418 | fm->priority, fm->cookie, fm->cookie_mask, | |
e729e793 | 3419 | fm->out_port, &rules); |
9ed18e46 | 3420 | return (error ? error |
7024dffe BP |
3421 | : list_is_singleton(&rules) ? delete_flows__(ofproto, ofconn, |
3422 | request, &rules) | |
9ed18e46 | 3423 | : 0); |
abe529af BP |
3424 | } |
3425 | ||
3426 | static void | |
3427 | ofproto_rule_send_removed(struct rule *rule, uint8_t reason) | |
3428 | { | |
3429 | struct ofputil_flow_removed fr; | |
3430 | ||
2b07c8b1 | 3431 | if (ofproto_rule_is_hidden(rule) || !rule->send_flow_removed) { |
abe529af BP |
3432 | return; |
3433 | } | |
3434 | ||
5cb7a798 | 3435 | minimatch_expand(&rule->cr.match, &fr.match); |
81a76618 | 3436 | fr.priority = rule->cr.priority; |
abe529af BP |
3437 | fr.cookie = rule->flow_cookie; |
3438 | fr.reason = reason; | |
95216219 | 3439 | fr.table_id = rule->table_id; |
f27f2134 BP |
3440 | calc_flow_duration__(rule->created, time_msec(), |
3441 | &fr.duration_sec, &fr.duration_nsec); | |
abe529af | 3442 | fr.idle_timeout = rule->idle_timeout; |
fa2bad0f | 3443 | fr.hard_timeout = rule->hard_timeout; |
abe529af BP |
3444 | rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count, |
3445 | &fr.byte_count); | |
3446 | ||
3447 | connmgr_send_flow_removed(rule->ofproto->connmgr, &fr); | |
3448 | } | |
3449 | ||
1745cd08 BP |
3450 | void |
3451 | ofproto_rule_update_used(struct rule *rule, long long int used) | |
3452 | { | |
3453 | if (used > rule->used) { | |
254750ce BP |
3454 | struct eviction_group *evg = rule->eviction_group; |
3455 | ||
1745cd08 | 3456 | rule->used = used; |
254750ce BP |
3457 | if (evg) { |
3458 | heap_change(&evg->rules, &rule->evg_node, | |
3459 | rule_eviction_priority(rule)); | |
3460 | } | |
1745cd08 BP |
3461 | } |
3462 | } | |
3463 | ||
abe529af BP |
3464 | /* Sends an OpenFlow "flow removed" message with the given 'reason' (either |
3465 | * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its | |
3466 | * ofproto. | |
3467 | * | |
e2a3d183 BP |
3468 | * 'rule' must not have a pending operation (that is, 'rule->pending' must be |
3469 | * NULL). | |
3470 | * | |
abe529af BP |
3471 | * ofproto implementation ->run() functions should use this function to expire |
3472 | * OpenFlow flows. */ | |
3473 | void | |
3474 | ofproto_rule_expire(struct rule *rule, uint8_t reason) | |
3475 | { | |
7ee20df1 BP |
3476 | struct ofproto *ofproto = rule->ofproto; |
3477 | struct ofopgroup *group; | |
3478 | ||
cb22974d | 3479 | ovs_assert(reason == OFPRR_HARD_TIMEOUT || reason == OFPRR_IDLE_TIMEOUT); |
7ee20df1 | 3480 | |
abe529af | 3481 | ofproto_rule_send_removed(rule, reason); |
7ee20df1 | 3482 | |
7024dffe | 3483 | group = ofopgroup_create_unattached(ofproto); |
2b07c8b1 | 3484 | ofoperation_create(group, rule, OFOPERATION_DELETE, reason); |
d0918789 | 3485 | oftable_remove_rule(rule); |
254750ce | 3486 | ofproto->ofproto_class->rule_destruct(rule); |
7ee20df1 | 3487 | ofopgroup_submit(group); |
79eee1eb BP |
3488 | } |
3489 | \f | |
90bf1e07 | 3490 | static enum ofperr |
2e4f5fcf | 3491 | handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3492 | { |
a5b8d268 | 3493 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
a9a2da38 | 3494 | struct ofputil_flow_mod fm; |
f25d0cf3 BP |
3495 | uint64_t ofpacts_stub[1024 / 8]; |
3496 | struct ofpbuf ofpacts; | |
90bf1e07 | 3497 | enum ofperr error; |
a5b8d268 | 3498 | long long int now; |
064af421 | 3499 | |
76589937 | 3500 | error = reject_slave_controller(ofconn); |
9deba63b | 3501 | if (error) { |
f25d0cf3 | 3502 | goto exit; |
9deba63b | 3503 | } |
3052b0c5 | 3504 | |
f25d0cf3 BP |
3505 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
3506 | error = ofputil_decode_flow_mod(&fm, oh, ofconn_get_protocol(ofconn), | |
3507 | &ofpacts); | |
548de4dd BP |
3508 | if (!error) { |
3509 | error = ofpacts_check(fm.ofpacts, fm.ofpacts_len, | |
81a76618 | 3510 | &fm.match.flow, ofproto->max_ports); |
548de4dd BP |
3511 | } |
3512 | if (!error) { | |
f1822532 | 3513 | error = handle_flow_mod__(ofproto, ofconn, &fm, oh); |
49bdc010 | 3514 | } |
a5b8d268 | 3515 | if (error) { |
f25d0cf3 | 3516 | goto exit_free_ofpacts; |
a5b8d268 | 3517 | } |
2e310801 | 3518 | |
a5b8d268 BP |
3519 | /* Record the operation for logging a summary report. */ |
3520 | switch (fm.command) { | |
3521 | case OFPFC_ADD: | |
3522 | ofproto->n_add++; | |
3523 | break; | |
3524 | ||
3525 | case OFPFC_MODIFY: | |
3526 | case OFPFC_MODIFY_STRICT: | |
3527 | ofproto->n_modify++; | |
3528 | break; | |
3529 | ||
3530 | case OFPFC_DELETE: | |
3531 | case OFPFC_DELETE_STRICT: | |
3532 | ofproto->n_delete++; | |
3533 | break; | |
3534 | } | |
3535 | ||
3536 | now = time_msec(); | |
3537 | if (ofproto->next_op_report == LLONG_MAX) { | |
3538 | ofproto->first_op = now; | |
3539 | ofproto->next_op_report = MAX(now + 10 * 1000, | |
3540 | ofproto->op_backoff); | |
3541 | ofproto->op_backoff = ofproto->next_op_report + 60 * 1000; | |
3542 | } | |
3543 | ofproto->last_op = now; | |
3544 | ||
f25d0cf3 BP |
3545 | exit_free_ofpacts: |
3546 | ofpbuf_uninit(&ofpacts); | |
3547 | exit: | |
3548 | return error; | |
75a75043 BP |
3549 | } |
3550 | ||
90bf1e07 | 3551 | static enum ofperr |
75a75043 BP |
3552 | handle_flow_mod__(struct ofproto *ofproto, struct ofconn *ofconn, |
3553 | const struct ofputil_flow_mod *fm, | |
3554 | const struct ofp_header *oh) | |
3555 | { | |
3556 | if (ofproto->n_pending >= 50) { | |
cb22974d | 3557 | ovs_assert(!list_is_empty(&ofproto->pending)); |
75a75043 BP |
3558 | return OFPROTO_POSTPONE; |
3559 | } | |
3560 | ||
3561 | switch (fm->command) { | |
3052b0c5 | 3562 | case OFPFC_ADD: |
75a75043 | 3563 | return add_flow(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3564 | |
3565 | case OFPFC_MODIFY: | |
75a75043 | 3566 | return modify_flows_loose(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3567 | |
3568 | case OFPFC_MODIFY_STRICT: | |
75a75043 | 3569 | return modify_flow_strict(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3570 | |
3571 | case OFPFC_DELETE: | |
75a75043 | 3572 | return delete_flows_loose(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3573 | |
3574 | case OFPFC_DELETE_STRICT: | |
75a75043 | 3575 | return delete_flow_strict(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3576 | |
3577 | default: | |
75a75043 | 3578 | if (fm->command > 0xff) { |
fbfa2911 BP |
3579 | VLOG_WARN_RL(&rl, "%s: flow_mod has explicit table_id but " |
3580 | "flow_mod_table_id extension is not enabled", | |
3581 | ofproto->name); | |
6c1491fb | 3582 | } |
90bf1e07 | 3583 | return OFPERR_OFPFMFC_BAD_COMMAND; |
3052b0c5 BP |
3584 | } |
3585 | } | |
3586 | ||
90bf1e07 | 3587 | static enum ofperr |
d1e2cf21 | 3588 | handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh) |
9deba63b | 3589 | { |
f4f1ea7e BP |
3590 | struct ofputil_role_request request; |
3591 | struct ofputil_role_request reply; | |
9deba63b | 3592 | struct ofpbuf *buf; |
6ea4776b JR |
3593 | enum ofperr error; |
3594 | ||
f4f1ea7e | 3595 | error = ofputil_decode_role_message(oh, &request); |
6ea4776b JR |
3596 | if (error) { |
3597 | return error; | |
3598 | } | |
9deba63b | 3599 | |
f4f1ea7e BP |
3600 | if (request.role != OFPCR12_ROLE_NOCHANGE) { |
3601 | if (ofconn_get_role(ofconn) != request.role | |
3602 | && ofconn_has_pending_opgroups(ofconn)) { | |
3603 | return OFPROTO_POSTPONE; | |
3604 | } | |
7ee20df1 | 3605 | |
f4f1ea7e BP |
3606 | if (request.have_generation_id |
3607 | && !ofconn_set_master_election_id(ofconn, request.generation_id)) { | |
3608 | return OFPERR_OFPRRFC_STALE; | |
6ea4776b | 3609 | } |
6ea4776b | 3610 | |
f4f1ea7e BP |
3611 | ofconn_set_role(ofconn, request.role); |
3612 | } | |
9deba63b | 3613 | |
f4f1ea7e | 3614 | reply.role = ofconn_get_role(ofconn); |
147cc9d3 BP |
3615 | reply.have_generation_id = ofconn_get_master_election_id( |
3616 | ofconn, &reply.generation_id); | |
f4f1ea7e | 3617 | buf = ofputil_encode_role_reply(oh, &reply); |
b0421aa2 | 3618 | ofconn_send_reply(ofconn, buf); |
9deba63b BP |
3619 | |
3620 | return 0; | |
3621 | } | |
3622 | ||
90bf1e07 | 3623 | static enum ofperr |
6c1491fb BP |
3624 | handle_nxt_flow_mod_table_id(struct ofconn *ofconn, |
3625 | const struct ofp_header *oh) | |
3626 | { | |
982697a4 | 3627 | const struct nx_flow_mod_table_id *msg = ofpmsg_body(oh); |
27527aa0 BP |
3628 | enum ofputil_protocol cur, next; |
3629 | ||
3630 | cur = ofconn_get_protocol(ofconn); | |
3631 | next = ofputil_protocol_set_tid(cur, msg->set != 0); | |
3632 | ofconn_set_protocol(ofconn, next); | |
6c1491fb | 3633 | |
6c1491fb BP |
3634 | return 0; |
3635 | } | |
3636 | ||
90bf1e07 | 3637 | static enum ofperr |
d1e2cf21 | 3638 | handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh) |
09246b99 | 3639 | { |
982697a4 | 3640 | const struct nx_set_flow_format *msg = ofpmsg_body(oh); |
27527aa0 BP |
3641 | enum ofputil_protocol cur, next; |
3642 | enum ofputil_protocol next_base; | |
09246b99 | 3643 | |
27527aa0 BP |
3644 | next_base = ofputil_nx_flow_format_to_protocol(ntohl(msg->format)); |
3645 | if (!next_base) { | |
90bf1e07 | 3646 | return OFPERR_OFPBRC_EPERM; |
09246b99 | 3647 | } |
7ee20df1 | 3648 | |
27527aa0 BP |
3649 | cur = ofconn_get_protocol(ofconn); |
3650 | next = ofputil_protocol_set_base(cur, next_base); | |
3651 | if (cur != next && ofconn_has_pending_opgroups(ofconn)) { | |
3652 | /* Avoid sending async messages in surprising protocol. */ | |
7ee20df1 BP |
3653 | return OFPROTO_POSTPONE; |
3654 | } | |
3655 | ||
27527aa0 | 3656 | ofconn_set_protocol(ofconn, next); |
7ee20df1 | 3657 | return 0; |
09246b99 BP |
3658 | } |
3659 | ||
90bf1e07 | 3660 | static enum ofperr |
54834960 EJ |
3661 | handle_nxt_set_packet_in_format(struct ofconn *ofconn, |
3662 | const struct ofp_header *oh) | |
3663 | { | |
982697a4 | 3664 | const struct nx_set_packet_in_format *msg = ofpmsg_body(oh); |
54834960 EJ |
3665 | uint32_t format; |
3666 | ||
54834960 | 3667 | format = ntohl(msg->format); |
a15f0eeb | 3668 | if (format != NXPIF_OPENFLOW10 && format != NXPIF_NXM) { |
90bf1e07 | 3669 | return OFPERR_OFPBRC_EPERM; |
54834960 EJ |
3670 | } |
3671 | ||
3672 | if (format != ofconn_get_packet_in_format(ofconn) | |
3673 | && ofconn_has_pending_opgroups(ofconn)) { | |
3674 | /* Avoid sending async message in surprsing packet in format. */ | |
3675 | return OFPROTO_POSTPONE; | |
3676 | } | |
3677 | ||
3678 | ofconn_set_packet_in_format(ofconn, format); | |
3679 | return 0; | |
3680 | } | |
3681 | ||
80d5aefd BP |
3682 | static enum ofperr |
3683 | handle_nxt_set_async_config(struct ofconn *ofconn, const struct ofp_header *oh) | |
3684 | { | |
982697a4 | 3685 | const struct nx_async_config *msg = ofpmsg_body(oh); |
80d5aefd BP |
3686 | uint32_t master[OAM_N_TYPES]; |
3687 | uint32_t slave[OAM_N_TYPES]; | |
3688 | ||
3689 | master[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[0]); | |
3690 | master[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[0]); | |
3691 | master[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[0]); | |
3692 | ||
3693 | slave[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[1]); | |
3694 | slave[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[1]); | |
3695 | slave[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[1]); | |
3696 | ||
3697 | ofconn_set_async_config(ofconn, master, slave); | |
4550b647 MM |
3698 | if (ofconn_get_type(ofconn) == OFCONN_SERVICE && |
3699 | !ofconn_get_miss_send_len(ofconn)) { | |
3700 | ofconn_set_miss_send_len(ofconn, OFP_DEFAULT_MISS_SEND_LEN); | |
3701 | } | |
80d5aefd BP |
3702 | |
3703 | return 0; | |
3704 | } | |
3705 | ||
a7349929 BP |
3706 | static enum ofperr |
3707 | handle_nxt_set_controller_id(struct ofconn *ofconn, | |
3708 | const struct ofp_header *oh) | |
3709 | { | |
982697a4 | 3710 | const struct nx_controller_id *nci = ofpmsg_body(oh); |
a7349929 | 3711 | |
a7349929 BP |
3712 | if (!is_all_zeros(nci->zero, sizeof nci->zero)) { |
3713 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
3714 | } | |
3715 | ||
3716 | ofconn_set_controller_id(ofconn, ntohs(nci->controller_id)); | |
3717 | return 0; | |
3718 | } | |
3719 | ||
90bf1e07 | 3720 | static enum ofperr |
d1e2cf21 | 3721 | handle_barrier_request(struct ofconn *ofconn, const struct ofp_header *oh) |
246e61ea | 3722 | { |
246e61ea JP |
3723 | struct ofpbuf *buf; |
3724 | ||
7ee20df1 BP |
3725 | if (ofconn_has_pending_opgroups(ofconn)) { |
3726 | return OFPROTO_POSTPONE; | |
3727 | } | |
3728 | ||
982697a4 BP |
3729 | buf = ofpraw_alloc_reply((oh->version == OFP10_VERSION |
3730 | ? OFPRAW_OFPT10_BARRIER_REPLY | |
3731 | : OFPRAW_OFPT11_BARRIER_REPLY), oh, 0); | |
b0421aa2 | 3732 | ofconn_send_reply(ofconn, buf); |
246e61ea JP |
3733 | return 0; |
3734 | } | |
3735 | ||
2b07c8b1 BP |
3736 | static void |
3737 | ofproto_compose_flow_refresh_update(const struct rule *rule, | |
3738 | enum nx_flow_monitor_flags flags, | |
3739 | struct list *msgs) | |
3740 | { | |
3741 | struct ofoperation *op = rule->pending; | |
3742 | struct ofputil_flow_update fu; | |
5cb7a798 | 3743 | struct match match; |
2b07c8b1 BP |
3744 | |
3745 | if (op && op->type == OFOPERATION_ADD && !op->victim) { | |
3746 | /* We'll report the final flow when the operation completes. Reporting | |
3747 | * it now would cause a duplicate report later. */ | |
3748 | return; | |
3749 | } | |
3750 | ||
3751 | fu.event = (flags & (NXFMF_INITIAL | NXFMF_ADD) | |
3752 | ? NXFME_ADDED : NXFME_MODIFIED); | |
3753 | fu.reason = 0; | |
3754 | fu.idle_timeout = rule->idle_timeout; | |
3755 | fu.hard_timeout = rule->hard_timeout; | |
3756 | fu.table_id = rule->table_id; | |
3757 | fu.cookie = rule->flow_cookie; | |
5cb7a798 BP |
3758 | minimatch_expand(&rule->cr.match, &match); |
3759 | fu.match = &match; | |
6b140a4e | 3760 | fu.priority = rule->cr.priority; |
2b07c8b1 BP |
3761 | if (!(flags & NXFMF_ACTIONS)) { |
3762 | fu.ofpacts = NULL; | |
3763 | fu.ofpacts_len = 0; | |
3764 | } else if (!op) { | |
3765 | fu.ofpacts = rule->ofpacts; | |
3766 | fu.ofpacts_len = rule->ofpacts_len; | |
3767 | } else { | |
3768 | /* An operation is in progress. Use the previous version of the flow's | |
3769 | * actions, so that when the operation commits we report the change. */ | |
3770 | switch (op->type) { | |
3771 | case OFOPERATION_ADD: | |
3772 | /* We already verified that there was a victim. */ | |
3773 | fu.ofpacts = op->victim->ofpacts; | |
3774 | fu.ofpacts_len = op->victim->ofpacts_len; | |
3775 | break; | |
3776 | ||
3777 | case OFOPERATION_MODIFY: | |
3778 | if (op->ofpacts) { | |
3779 | fu.ofpacts = op->ofpacts; | |
3780 | fu.ofpacts_len = op->ofpacts_len; | |
3781 | } else { | |
3782 | fu.ofpacts = rule->ofpacts; | |
3783 | fu.ofpacts_len = rule->ofpacts_len; | |
3784 | } | |
3785 | break; | |
3786 | ||
3787 | case OFOPERATION_DELETE: | |
3788 | fu.ofpacts = rule->ofpacts; | |
3789 | fu.ofpacts_len = rule->ofpacts_len; | |
3790 | break; | |
3791 | ||
3792 | default: | |
3793 | NOT_REACHED(); | |
3794 | } | |
3795 | } | |
3796 | ||
3797 | if (list_is_empty(msgs)) { | |
3798 | ofputil_start_flow_update(msgs); | |
3799 | } | |
3800 | ofputil_append_flow_update(&fu, msgs); | |
3801 | } | |
3802 | ||
3803 | void | |
3804 | ofmonitor_compose_refresh_updates(struct list *rules, struct list *msgs) | |
3805 | { | |
3806 | struct rule *rule; | |
3807 | ||
3808 | LIST_FOR_EACH (rule, ofproto_node, rules) { | |
3809 | enum nx_flow_monitor_flags flags = rule->monitor_flags; | |
3810 | rule->monitor_flags = 0; | |
3811 | ||
3812 | ofproto_compose_flow_refresh_update(rule, flags, msgs); | |
3813 | } | |
3814 | } | |
3815 | ||
3816 | static void | |
3817 | ofproto_collect_ofmonitor_refresh_rule(const struct ofmonitor *m, | |
3818 | struct rule *rule, uint64_t seqno, | |
3819 | struct list *rules) | |
3820 | { | |
3821 | enum nx_flow_monitor_flags update; | |
3822 | ||
3823 | if (ofproto_rule_is_hidden(rule)) { | |
3824 | return; | |
3825 | } | |
3826 | ||
3827 | if (!(rule->pending | |
3828 | ? ofoperation_has_out_port(rule->pending, m->out_port) | |
3829 | : ofproto_rule_has_out_port(rule, m->out_port))) { | |
3830 | return; | |
3831 | } | |
3832 | ||
3833 | if (seqno) { | |
3834 | if (rule->add_seqno > seqno) { | |
3835 | update = NXFMF_ADD | NXFMF_MODIFY; | |
3836 | } else if (rule->modify_seqno > seqno) { | |
3837 | update = NXFMF_MODIFY; | |
3838 | } else { | |
3839 | return; | |
3840 | } | |
3841 | ||
3842 | if (!(m->flags & update)) { | |
3843 | return; | |
3844 | } | |
3845 | } else { | |
3846 | update = NXFMF_INITIAL; | |
3847 | } | |
3848 | ||
3849 | if (!rule->monitor_flags) { | |
3850 | list_push_back(rules, &rule->ofproto_node); | |
3851 | } | |
3852 | rule->monitor_flags |= update | (m->flags & NXFMF_ACTIONS); | |
3853 | } | |
3854 | ||
3855 | static void | |
3856 | ofproto_collect_ofmonitor_refresh_rules(const struct ofmonitor *m, | |
3857 | uint64_t seqno, | |
3858 | struct list *rules) | |
3859 | { | |
3860 | const struct ofproto *ofproto = ofconn_get_ofproto(m->ofconn); | |
3861 | const struct ofoperation *op; | |
3862 | const struct oftable *table; | |
81a76618 | 3863 | struct cls_rule target; |
2b07c8b1 | 3864 | |
5cb7a798 | 3865 | cls_rule_init_from_minimatch(&target, &m->match, 0); |
2b07c8b1 BP |
3866 | FOR_EACH_MATCHING_TABLE (table, m->table_id, ofproto) { |
3867 | struct cls_cursor cursor; | |
3868 | struct rule *rule; | |
3869 | ||
81a76618 | 3870 | cls_cursor_init(&cursor, &table->cls, &target); |
2b07c8b1 | 3871 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
cb22974d | 3872 | ovs_assert(!rule->pending); /* XXX */ |
2b07c8b1 BP |
3873 | ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules); |
3874 | } | |
3875 | } | |
3876 | ||
3877 | HMAP_FOR_EACH (op, hmap_node, &ofproto->deletions) { | |
3878 | struct rule *rule = op->rule; | |
3879 | ||
3880 | if (((m->table_id == 0xff | |
3881 | ? !(ofproto->tables[rule->table_id].flags & OFTABLE_HIDDEN) | |
3882 | : m->table_id == rule->table_id)) | |
81a76618 | 3883 | && cls_rule_is_loose_match(&rule->cr, &target.match)) { |
2b07c8b1 BP |
3884 | ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules); |
3885 | } | |
3886 | } | |
48d28ac1 | 3887 | cls_rule_destroy(&target); |
2b07c8b1 BP |
3888 | } |
3889 | ||
3890 | static void | |
3891 | ofproto_collect_ofmonitor_initial_rules(struct ofmonitor *m, | |
3892 | struct list *rules) | |
3893 | { | |
3894 | if (m->flags & NXFMF_INITIAL) { | |
3895 | ofproto_collect_ofmonitor_refresh_rules(m, 0, rules); | |
3896 | } | |
3897 | } | |
3898 | ||
3899 | void | |
3900 | ofmonitor_collect_resume_rules(struct ofmonitor *m, | |
3901 | uint64_t seqno, struct list *rules) | |
3902 | { | |
3903 | ofproto_collect_ofmonitor_refresh_rules(m, seqno, rules); | |
3904 | } | |
3905 | ||
3906 | static enum ofperr | |
982697a4 | 3907 | handle_flow_monitor_request(struct ofconn *ofconn, const struct ofp_header *oh) |
2b07c8b1 BP |
3908 | { |
3909 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
3910 | struct ofmonitor **monitors; | |
3911 | size_t n_monitors, allocated_monitors; | |
3912 | struct list replies; | |
3913 | enum ofperr error; | |
3914 | struct list rules; | |
3915 | struct ofpbuf b; | |
3916 | size_t i; | |
3917 | ||
3918 | error = 0; | |
982697a4 | 3919 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
2b07c8b1 BP |
3920 | monitors = NULL; |
3921 | n_monitors = allocated_monitors = 0; | |
3922 | for (;;) { | |
3923 | struct ofputil_flow_monitor_request request; | |
3924 | struct ofmonitor *m; | |
3925 | int retval; | |
3926 | ||
3927 | retval = ofputil_decode_flow_monitor_request(&request, &b); | |
3928 | if (retval == EOF) { | |
3929 | break; | |
3930 | } else if (retval) { | |
3931 | error = retval; | |
3932 | goto error; | |
3933 | } | |
3934 | ||
3935 | if (request.table_id != 0xff | |
3936 | && request.table_id >= ofproto->n_tables) { | |
3937 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
3938 | goto error; | |
3939 | } | |
3940 | ||
3941 | error = ofmonitor_create(&request, ofconn, &m); | |
3942 | if (error) { | |
3943 | goto error; | |
3944 | } | |
3945 | ||
3946 | if (n_monitors >= allocated_monitors) { | |
3947 | monitors = x2nrealloc(monitors, &allocated_monitors, | |
3948 | sizeof *monitors); | |
3949 | } | |
3950 | monitors[n_monitors++] = m; | |
3951 | } | |
3952 | ||
3953 | list_init(&rules); | |
3954 | for (i = 0; i < n_monitors; i++) { | |
3955 | ofproto_collect_ofmonitor_initial_rules(monitors[i], &rules); | |
3956 | } | |
3957 | ||
982697a4 | 3958 | ofpmp_init(&replies, oh); |
2b07c8b1 BP |
3959 | ofmonitor_compose_refresh_updates(&rules, &replies); |
3960 | ofconn_send_replies(ofconn, &replies); | |
3961 | ||
3962 | free(monitors); | |
3963 | ||
3964 | return 0; | |
3965 | ||
3966 | error: | |
3967 | for (i = 0; i < n_monitors; i++) { | |
3968 | ofmonitor_destroy(monitors[i]); | |
3969 | } | |
3970 | free(monitors); | |
3971 | return error; | |
3972 | } | |
3973 | ||
3974 | static enum ofperr | |
3975 | handle_flow_monitor_cancel(struct ofconn *ofconn, const struct ofp_header *oh) | |
3976 | { | |
3977 | struct ofmonitor *m; | |
3978 | uint32_t id; | |
3979 | ||
3980 | id = ofputil_decode_flow_monitor_cancel(oh); | |
3981 | m = ofmonitor_lookup(ofconn, id); | |
3982 | if (!m) { | |
3983 | return OFPERR_NXBRC_FM_BAD_ID; | |
3984 | } | |
3985 | ||
3986 | ofmonitor_destroy(m); | |
3987 | return 0; | |
3988 | } | |
3989 | ||
90bf1e07 | 3990 | static enum ofperr |
d1e2cf21 | 3991 | handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg) |
064af421 | 3992 | { |
d1e2cf21 | 3993 | const struct ofp_header *oh = msg->data; |
982697a4 | 3994 | enum ofptype type; |
90bf1e07 | 3995 | enum ofperr error; |
064af421 | 3996 | |
982697a4 | 3997 | error = ofptype_decode(&type, oh); |
d1e2cf21 BP |
3998 | if (error) { |
3999 | return error; | |
4000 | } | |
064af421 | 4001 | |
982697a4 | 4002 | switch (type) { |
d1e2cf21 | 4003 | /* OpenFlow requests. */ |
982697a4 | 4004 | case OFPTYPE_ECHO_REQUEST: |
d1e2cf21 | 4005 | return handle_echo_request(ofconn, oh); |
064af421 | 4006 | |
982697a4 | 4007 | case OFPTYPE_FEATURES_REQUEST: |
d1e2cf21 | 4008 | return handle_features_request(ofconn, oh); |
064af421 | 4009 | |
982697a4 | 4010 | case OFPTYPE_GET_CONFIG_REQUEST: |
d1e2cf21 | 4011 | return handle_get_config_request(ofconn, oh); |
064af421 | 4012 | |
982697a4 BP |
4013 | case OFPTYPE_SET_CONFIG: |
4014 | return handle_set_config(ofconn, oh); | |
064af421 | 4015 | |
982697a4 BP |
4016 | case OFPTYPE_PACKET_OUT: |
4017 | return handle_packet_out(ofconn, oh); | |
064af421 | 4018 | |
982697a4 | 4019 | case OFPTYPE_PORT_MOD: |
d1e2cf21 | 4020 | return handle_port_mod(ofconn, oh); |
064af421 | 4021 | |
982697a4 | 4022 | case OFPTYPE_FLOW_MOD: |
2e4f5fcf | 4023 | return handle_flow_mod(ofconn, oh); |
064af421 | 4024 | |
982697a4 | 4025 | case OFPTYPE_BARRIER_REQUEST: |
d1e2cf21 | 4026 | return handle_barrier_request(ofconn, oh); |
064af421 | 4027 | |
6ea4776b JR |
4028 | case OFPTYPE_ROLE_REQUEST: |
4029 | return handle_role_request(ofconn, oh); | |
4030 | ||
d1e2cf21 | 4031 | /* OpenFlow replies. */ |
982697a4 | 4032 | case OFPTYPE_ECHO_REPLY: |
d1e2cf21 | 4033 | return 0; |
246e61ea | 4034 | |
d1e2cf21 | 4035 | /* Nicira extension requests. */ |
982697a4 | 4036 | case OFPTYPE_FLOW_MOD_TABLE_ID: |
6c1491fb | 4037 | return handle_nxt_flow_mod_table_id(ofconn, oh); |
d1e2cf21 | 4038 | |
982697a4 | 4039 | case OFPTYPE_SET_FLOW_FORMAT: |
d1e2cf21 BP |
4040 | return handle_nxt_set_flow_format(ofconn, oh); |
4041 | ||
982697a4 | 4042 | case OFPTYPE_SET_PACKET_IN_FORMAT: |
54834960 EJ |
4043 | return handle_nxt_set_packet_in_format(ofconn, oh); |
4044 | ||
982697a4 | 4045 | case OFPTYPE_SET_CONTROLLER_ID: |
a7349929 BP |
4046 | return handle_nxt_set_controller_id(ofconn, oh); |
4047 | ||
982697a4 | 4048 | case OFPTYPE_FLOW_AGE: |
f27f2134 BP |
4049 | /* Nothing to do. */ |
4050 | return 0; | |
4051 | ||
982697a4 | 4052 | case OFPTYPE_FLOW_MONITOR_CANCEL: |
2b07c8b1 BP |
4053 | return handle_flow_monitor_cancel(ofconn, oh); |
4054 | ||
982697a4 | 4055 | case OFPTYPE_SET_ASYNC_CONFIG: |
80d5aefd BP |
4056 | return handle_nxt_set_async_config(ofconn, oh); |
4057 | ||
349adfb2 | 4058 | /* Statistics requests. */ |
982697a4 BP |
4059 | case OFPTYPE_DESC_STATS_REQUEST: |
4060 | return handle_desc_stats_request(ofconn, oh); | |
4061 | ||
4062 | case OFPTYPE_FLOW_STATS_REQUEST: | |
4063 | return handle_flow_stats_request(ofconn, oh); | |
4064 | ||
4065 | case OFPTYPE_AGGREGATE_STATS_REQUEST: | |
4066 | return handle_aggregate_stats_request(ofconn, oh); | |
4067 | ||
4068 | case OFPTYPE_TABLE_STATS_REQUEST: | |
4069 | return handle_table_stats_request(ofconn, oh); | |
4070 | ||
4071 | case OFPTYPE_PORT_STATS_REQUEST: | |
4072 | return handle_port_stats_request(ofconn, oh); | |
4073 | ||
4074 | case OFPTYPE_QUEUE_STATS_REQUEST: | |
4075 | return handle_queue_stats_request(ofconn, oh); | |
4076 | ||
4077 | case OFPTYPE_PORT_DESC_STATS_REQUEST: | |
4078 | return handle_port_desc_stats_request(ofconn, oh); | |
4079 | ||
4080 | case OFPTYPE_FLOW_MONITOR_STATS_REQUEST: | |
4081 | return handle_flow_monitor_request(ofconn, oh); | |
4082 | ||
2e1ae200 | 4083 | /* FIXME: Change the following once they are implemented: */ |
c545d38d | 4084 | case OFPTYPE_QUEUE_GET_CONFIG_REQUEST: |
2e1ae200 JR |
4085 | case OFPTYPE_GET_ASYNC_REQUEST: |
4086 | case OFPTYPE_METER_MOD: | |
4087 | case OFPTYPE_GROUP_REQUEST: | |
4088 | case OFPTYPE_GROUP_DESC_REQUEST: | |
4089 | case OFPTYPE_GROUP_FEATURES_REQUEST: | |
4090 | case OFPTYPE_METER_REQUEST: | |
4091 | case OFPTYPE_METER_CONFIG_REQUEST: | |
4092 | case OFPTYPE_METER_FEATURES_REQUEST: | |
4093 | case OFPTYPE_TABLE_FEATURES_REQUEST: | |
4094 | return OFPERR_OFPBRC_BAD_TYPE; | |
4095 | ||
982697a4 BP |
4096 | case OFPTYPE_HELLO: |
4097 | case OFPTYPE_ERROR: | |
4098 | case OFPTYPE_FEATURES_REPLY: | |
4099 | case OFPTYPE_GET_CONFIG_REPLY: | |
4100 | case OFPTYPE_PACKET_IN: | |
4101 | case OFPTYPE_FLOW_REMOVED: | |
4102 | case OFPTYPE_PORT_STATUS: | |
4103 | case OFPTYPE_BARRIER_REPLY: | |
c545d38d | 4104 | case OFPTYPE_QUEUE_GET_CONFIG_REPLY: |
982697a4 BP |
4105 | case OFPTYPE_DESC_STATS_REPLY: |
4106 | case OFPTYPE_FLOW_STATS_REPLY: | |
4107 | case OFPTYPE_QUEUE_STATS_REPLY: | |
4108 | case OFPTYPE_PORT_STATS_REPLY: | |
4109 | case OFPTYPE_TABLE_STATS_REPLY: | |
4110 | case OFPTYPE_AGGREGATE_STATS_REPLY: | |
4111 | case OFPTYPE_PORT_DESC_STATS_REPLY: | |
4112 | case OFPTYPE_ROLE_REPLY: | |
4113 | case OFPTYPE_FLOW_MONITOR_PAUSED: | |
4114 | case OFPTYPE_FLOW_MONITOR_RESUMED: | |
4115 | case OFPTYPE_FLOW_MONITOR_STATS_REPLY: | |
2e1ae200 JR |
4116 | case OFPTYPE_GET_ASYNC_REPLY: |
4117 | case OFPTYPE_GROUP_REPLY: | |
4118 | case OFPTYPE_GROUP_DESC_REPLY: | |
4119 | case OFPTYPE_GROUP_FEATURES_REPLY: | |
4120 | case OFPTYPE_METER_REPLY: | |
4121 | case OFPTYPE_METER_CONFIG_REPLY: | |
4122 | case OFPTYPE_METER_FEATURES_REPLY: | |
4123 | case OFPTYPE_TABLE_FEATURES_REPLY: | |
064af421 | 4124 | default: |
982697a4 | 4125 | return OFPERR_OFPBRC_BAD_TYPE; |
064af421 | 4126 | } |
d1e2cf21 | 4127 | } |
064af421 | 4128 | |
7ee20df1 | 4129 | static bool |
d1e2cf21 BP |
4130 | handle_openflow(struct ofconn *ofconn, struct ofpbuf *ofp_msg) |
4131 | { | |
4132 | int error = handle_openflow__(ofconn, ofp_msg); | |
7ee20df1 | 4133 | if (error && error != OFPROTO_POSTPONE) { |
1be5ff75 | 4134 | ofconn_send_error(ofconn, ofp_msg->data, error); |
064af421 | 4135 | } |
d1e2cf21 | 4136 | COVERAGE_INC(ofproto_recv_openflow); |
7ee20df1 BP |
4137 | return error != OFPROTO_POSTPONE; |
4138 | } | |
4139 | \f | |
4140 | /* Asynchronous operations. */ | |
4141 | ||
4142 | /* Creates and returns a new ofopgroup that is not associated with any | |
4143 | * OpenFlow connection. | |
4144 | * | |
4145 | * The caller should add operations to the returned group with | |
4146 | * ofoperation_create() and then submit it with ofopgroup_submit(). */ | |
4147 | static struct ofopgroup * | |
7024dffe | 4148 | ofopgroup_create_unattached(struct ofproto *ofproto) |
7ee20df1 BP |
4149 | { |
4150 | struct ofopgroup *group = xzalloc(sizeof *group); | |
4151 | group->ofproto = ofproto; | |
4152 | list_init(&group->ofproto_node); | |
4153 | list_init(&group->ops); | |
4154 | list_init(&group->ofconn_node); | |
4155 | return group; | |
4156 | } | |
4157 | ||
7024dffe BP |
4158 | /* Creates and returns a new ofopgroup for 'ofproto'. |
4159 | * | |
4160 | * If 'ofconn' is NULL, the new ofopgroup is not associated with any OpenFlow | |
4161 | * connection. The 'request' and 'buffer_id' arguments are ignored. | |
4162 | * | |
4163 | * If 'ofconn' is nonnull, then the new ofopgroup is associated with 'ofconn'. | |
4164 | * If the ofopgroup eventually fails, then the error reply will include | |
4165 | * 'request'. If the ofopgroup eventually succeeds, then the packet with | |
4166 | * buffer id 'buffer_id' on 'ofconn' will be sent by 'ofconn''s ofproto. | |
7ee20df1 BP |
4167 | * |
4168 | * The caller should add operations to the returned group with | |
4169 | * ofoperation_create() and then submit it with ofopgroup_submit(). */ | |
4170 | static struct ofopgroup * | |
7024dffe BP |
4171 | ofopgroup_create(struct ofproto *ofproto, struct ofconn *ofconn, |
4172 | const struct ofp_header *request, uint32_t buffer_id) | |
7ee20df1 | 4173 | { |
7024dffe BP |
4174 | struct ofopgroup *group = ofopgroup_create_unattached(ofproto); |
4175 | if (ofconn) { | |
4176 | size_t request_len = ntohs(request->length); | |
7ee20df1 | 4177 | |
cb22974d | 4178 | ovs_assert(ofconn_get_ofproto(ofconn) == ofproto); |
7ee20df1 | 4179 | |
7024dffe BP |
4180 | ofconn_add_opgroup(ofconn, &group->ofconn_node); |
4181 | group->ofconn = ofconn; | |
4182 | group->request = xmemdup(request, MIN(request_len, 64)); | |
4183 | group->buffer_id = buffer_id; | |
4184 | } | |
7ee20df1 BP |
4185 | return group; |
4186 | } | |
4187 | ||
4188 | /* Submits 'group' for processing. | |
4189 | * | |
4190 | * If 'group' contains no operations (e.g. none were ever added, or all of the | |
4191 | * ones that were added completed synchronously), then it is destroyed | |
4192 | * immediately. Otherwise it is added to the ofproto's list of pending | |
4193 | * groups. */ | |
4194 | static void | |
4195 | ofopgroup_submit(struct ofopgroup *group) | |
4196 | { | |
e615b0a3 BP |
4197 | if (!group->n_running) { |
4198 | ofopgroup_complete(group); | |
7ee20df1 BP |
4199 | } else { |
4200 | list_push_back(&group->ofproto->pending, &group->ofproto_node); | |
dd5616b3 | 4201 | group->ofproto->n_pending++; |
7ee20df1 BP |
4202 | } |
4203 | } | |
4204 | ||
4205 | static void | |
e615b0a3 | 4206 | ofopgroup_complete(struct ofopgroup *group) |
7ee20df1 | 4207 | { |
e615b0a3 | 4208 | struct ofproto *ofproto = group->ofproto; |
2b07c8b1 BP |
4209 | |
4210 | struct ofconn *abbrev_ofconn; | |
4211 | ovs_be32 abbrev_xid; | |
4212 | ||
e615b0a3 BP |
4213 | struct ofoperation *op, *next_op; |
4214 | int error; | |
4215 | ||
cb22974d | 4216 | ovs_assert(!group->n_running); |
e615b0a3 BP |
4217 | |
4218 | error = 0; | |
4219 | LIST_FOR_EACH (op, group_node, &group->ops) { | |
4220 | if (op->error) { | |
4221 | error = op->error; | |
4222 | break; | |
4223 | } | |
4224 | } | |
4225 | ||
4226 | if (!error && group->ofconn && group->buffer_id != UINT32_MAX) { | |
4227 | LIST_FOR_EACH (op, group_node, &group->ops) { | |
4228 | if (op->type != OFOPERATION_DELETE) { | |
4229 | struct ofpbuf *packet; | |
4230 | uint16_t in_port; | |
4231 | ||
4232 | error = ofconn_pktbuf_retrieve(group->ofconn, group->buffer_id, | |
4233 | &packet, &in_port); | |
4234 | if (packet) { | |
cb22974d | 4235 | ovs_assert(!error); |
e615b0a3 BP |
4236 | error = rule_execute(op->rule, in_port, packet); |
4237 | } | |
4238 | break; | |
4239 | } | |
4240 | } | |
4241 | } | |
4242 | ||
2b07c8b1 BP |
4243 | if (!error && !list_is_empty(&group->ofconn_node)) { |
4244 | abbrev_ofconn = group->ofconn; | |
4245 | abbrev_xid = group->request->xid; | |
4246 | } else { | |
4247 | abbrev_ofconn = NULL; | |
4248 | abbrev_xid = htonl(0); | |
4249 | } | |
e615b0a3 BP |
4250 | LIST_FOR_EACH_SAFE (op, next_op, group_node, &group->ops) { |
4251 | struct rule *rule = op->rule; | |
2b07c8b1 | 4252 | |
644e2a7c BP |
4253 | /* We generally want to report the change to active OpenFlow flow |
4254 | monitors (e.g. NXST_FLOW_MONITOR). There are three exceptions: | |
4255 | ||
4256 | - The operation failed. | |
4257 | ||
4258 | - The affected rule is not visible to controllers. | |
4259 | ||
4260 | - The operation's only effect was to update rule->modified. */ | |
4261 | if (!(op->error | |
4262 | || ofproto_rule_is_hidden(rule) | |
4263 | || (op->type == OFOPERATION_MODIFY | |
4264 | && op->ofpacts | |
4265 | && rule->flow_cookie == op->flow_cookie))) { | |
2b07c8b1 BP |
4266 | /* Check that we can just cast from ofoperation_type to |
4267 | * nx_flow_update_event. */ | |
1ec3db6f EJ |
4268 | BUILD_ASSERT_DECL((enum nx_flow_update_event) OFOPERATION_ADD |
4269 | == NXFME_ADDED); | |
4270 | BUILD_ASSERT_DECL((enum nx_flow_update_event) OFOPERATION_DELETE | |
4271 | == NXFME_DELETED); | |
4272 | BUILD_ASSERT_DECL((enum nx_flow_update_event) OFOPERATION_MODIFY | |
4273 | == NXFME_MODIFIED); | |
2b07c8b1 BP |
4274 | |
4275 | ofmonitor_report(ofproto->connmgr, rule, | |
4276 | (enum nx_flow_update_event) op->type, | |
4277 | op->reason, abbrev_ofconn, abbrev_xid); | |
4278 | } | |
4279 | ||
e615b0a3 BP |
4280 | rule->pending = NULL; |
4281 | ||
4282 | switch (op->type) { | |
4283 | case OFOPERATION_ADD: | |
4284 | if (!op->error) { | |
5cb7a798 BP |
4285 | uint16_t vid_mask; |
4286 | ||
e615b0a3 | 4287 | ofproto_rule_destroy__(op->victim); |
5cb7a798 BP |
4288 | vid_mask = minimask_get_vid_mask(&rule->cr.match.mask); |
4289 | if (vid_mask == VLAN_VID_MASK) { | |
e615b0a3 | 4290 | if (ofproto->vlan_bitmap) { |
5cb7a798 | 4291 | uint16_t vid = miniflow_get_vid(&rule->cr.match.flow); |
e615b0a3 BP |
4292 | if (!bitmap_is_set(ofproto->vlan_bitmap, vid)) { |
4293 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
4294 | ofproto->vlans_changed = true; | |
4295 | } | |
4296 | } else { | |
4297 | ofproto->vlans_changed = true; | |
4298 | } | |
4299 | } | |
4300 | } else { | |
4301 | oftable_substitute_rule(rule, op->victim); | |
4302 | ofproto_rule_destroy__(rule); | |
4303 | } | |
4304 | break; | |
4305 | ||
4306 | case OFOPERATION_DELETE: | |
cb22974d | 4307 | ovs_assert(!op->error); |
e615b0a3 BP |
4308 | ofproto_rule_destroy__(rule); |
4309 | op->rule = NULL; | |
4310 | break; | |
4311 | ||
4312 | case OFOPERATION_MODIFY: | |
4313 | if (!op->error) { | |
4314 | rule->modified = time_msec(); | |
4315 | } else { | |
41792464 | 4316 | rule->flow_cookie = op->flow_cookie; |
08043761 BP |
4317 | if (op->ofpacts) { |
4318 | free(rule->ofpacts); | |
4319 | rule->ofpacts = op->ofpacts; | |
4320 | rule->ofpacts_len = op->ofpacts_len; | |
4321 | op->ofpacts = NULL; | |
4322 | op->ofpacts_len = 0; | |
4323 | } | |
e615b0a3 BP |
4324 | } |
4325 | break; | |
4326 | ||
4327 | default: | |
4328 | NOT_REACHED(); | |
4329 | } | |
4330 | ||
4331 | ofoperation_destroy(op); | |
4332 | } | |
4333 | ||
2b07c8b1 BP |
4334 | ofmonitor_flush(ofproto->connmgr); |
4335 | ||
7ee20df1 | 4336 | if (!list_is_empty(&group->ofproto_node)) { |
cb22974d | 4337 | ovs_assert(ofproto->n_pending > 0); |
e615b0a3 | 4338 | ofproto->n_pending--; |
7ee20df1 BP |
4339 | list_remove(&group->ofproto_node); |
4340 | } | |
4341 | if (!list_is_empty(&group->ofconn_node)) { | |
4342 | list_remove(&group->ofconn_node); | |
e615b0a3 BP |
4343 | if (error) { |
4344 | ofconn_send_error(group->ofconn, group->request, error); | |
7ee20df1 | 4345 | } |
e615b0a3 | 4346 | connmgr_retry(ofproto->connmgr); |
7ee20df1 BP |
4347 | } |
4348 | free(group->request); | |
4349 | free(group); | |
4350 | } | |
4351 | ||
4352 | /* Initiates a new operation on 'rule', of the specified 'type', within | |
a7d94793 BP |
4353 | * 'group'. Prior to calling, 'rule' must not have any pending operation. |
4354 | * | |
2b07c8b1 BP |
4355 | * For a 'type' of OFOPERATION_DELETE, 'reason' should specify the reason that |
4356 | * the flow is being deleted. For other 'type's, 'reason' is ignored (use 0). | |
4357 | * | |
a7d94793 BP |
4358 | * Returns the newly created ofoperation (which is also available as |
4359 | * rule->pending). */ | |
4360 | static struct ofoperation * | |
7ee20df1 | 4361 | ofoperation_create(struct ofopgroup *group, struct rule *rule, |
2b07c8b1 BP |
4362 | enum ofoperation_type type, |
4363 | enum ofp_flow_removed_reason reason) | |
7ee20df1 | 4364 | { |
a5b8d268 | 4365 | struct ofproto *ofproto = group->ofproto; |
7ee20df1 BP |
4366 | struct ofoperation *op; |
4367 | ||
cb22974d | 4368 | ovs_assert(!rule->pending); |
7ee20df1 BP |
4369 | |
4370 | op = rule->pending = xzalloc(sizeof *op); | |
4371 | op->group = group; | |
4372 | list_push_back(&group->ops, &op->group_node); | |
4373 | op->rule = rule; | |
4374 | op->type = type; | |
2b07c8b1 | 4375 | op->reason = reason; |
7ee20df1 BP |
4376 | op->flow_cookie = rule->flow_cookie; |
4377 | ||
e615b0a3 BP |
4378 | group->n_running++; |
4379 | ||
7ee20df1 | 4380 | if (type == OFOPERATION_DELETE) { |
a5b8d268 | 4381 | hmap_insert(&ofproto->deletions, &op->hmap_node, |
7ee20df1 BP |
4382 | cls_rule_hash(&rule->cr, rule->table_id)); |
4383 | } | |
a7d94793 BP |
4384 | |
4385 | return op; | |
7ee20df1 BP |
4386 | } |
4387 | ||
4388 | static void | |
4389 | ofoperation_destroy(struct ofoperation *op) | |
4390 | { | |
4391 | struct ofopgroup *group = op->group; | |
4392 | ||
4393 | if (op->rule) { | |
4394 | op->rule->pending = NULL; | |
4395 | } | |
4396 | if (op->type == OFOPERATION_DELETE) { | |
4397 | hmap_remove(&group->ofproto->deletions, &op->hmap_node); | |
4398 | } | |
4399 | list_remove(&op->group_node); | |
f25d0cf3 | 4400 | free(op->ofpacts); |
7ee20df1 | 4401 | free(op); |
7ee20df1 BP |
4402 | } |
4403 | ||
4404 | /* Indicates that 'op' completed with status 'error', which is either 0 to | |
90bf1e07 | 4405 | * indicate success or an OpenFlow error code on failure. |
7ee20df1 | 4406 | * |
a6a62132 BP |
4407 | * If 'error' is 0, indicating success, the operation will be committed |
4408 | * permanently to the flow table. There is one interesting subcase: | |
4409 | * | |
4410 | * - If 'op' is an "add flow" operation that is replacing an existing rule in | |
4411 | * the flow table (the "victim" rule) by a new one, then the caller must | |
4412 | * have uninitialized any derived state in the victim rule, as in step 5 in | |
4413 | * the "Life Cycle" in ofproto/ofproto-provider.h. ofoperation_complete() | |
4414 | * performs steps 6 and 7 for the victim rule, most notably by calling its | |
4415 | * ->rule_dealloc() function. | |
4416 | * | |
4417 | * If 'error' is nonzero, then generally the operation will be rolled back: | |
4418 | * | |
4419 | * - If 'op' is an "add flow" operation, ofproto removes the new rule or | |
4420 | * restores the original rule. The caller must have uninitialized any | |
4421 | * derived state in the new rule, as in step 5 of in the "Life Cycle" in | |
4422 | * ofproto/ofproto-provider.h. ofoperation_complete() performs steps 6 and | |
4423 | * and 7 for the new rule, calling its ->rule_dealloc() function. | |
4424 | * | |
4425 | * - If 'op' is a "modify flow" operation, ofproto restores the original | |
4426 | * actions. | |
4427 | * | |
4428 | * - 'op' must not be a "delete flow" operation. Removing a rule is not | |
4429 | * allowed to fail. It must always succeed. | |
7ee20df1 | 4430 | * |
5bee6e26 JP |
4431 | * Please see the large comment in ofproto/ofproto-provider.h titled |
4432 | * "Asynchronous Operation Support" for more information. */ | |
7ee20df1 | 4433 | void |
90bf1e07 | 4434 | ofoperation_complete(struct ofoperation *op, enum ofperr error) |
7ee20df1 BP |
4435 | { |
4436 | struct ofopgroup *group = op->group; | |
7ee20df1 | 4437 | |
cb22974d BP |
4438 | ovs_assert(op->rule->pending == op); |
4439 | ovs_assert(group->n_running > 0); | |
4440 | ovs_assert(!error || op->type != OFOPERATION_DELETE); | |
9075907c | 4441 | |
e615b0a3 BP |
4442 | op->error = error; |
4443 | if (!--group->n_running && !list_is_empty(&group->ofproto_node)) { | |
4444 | ofopgroup_complete(group); | |
7ee20df1 | 4445 | } |
7ee20df1 BP |
4446 | } |
4447 | ||
4448 | struct rule * | |
4449 | ofoperation_get_victim(struct ofoperation *op) | |
4450 | { | |
cb22974d | 4451 | ovs_assert(op->type == OFOPERATION_ADD); |
7ee20df1 | 4452 | return op->victim; |
064af421 BP |
4453 | } |
4454 | \f | |
064af421 | 4455 | static uint64_t |
fa60c019 | 4456 | pick_datapath_id(const struct ofproto *ofproto) |
064af421 | 4457 | { |
fa60c019 | 4458 | const struct ofport *port; |
064af421 | 4459 | |
abe529af | 4460 | port = ofproto_get_port(ofproto, OFPP_LOCAL); |
fa60c019 BP |
4461 | if (port) { |
4462 | uint8_t ea[ETH_ADDR_LEN]; | |
4463 | int error; | |
4464 | ||
4465 | error = netdev_get_etheraddr(port->netdev, ea); | |
064af421 BP |
4466 | if (!error) { |
4467 | return eth_addr_to_uint64(ea); | |
4468 | } | |
fbfa2911 BP |
4469 | VLOG_WARN("%s: could not get MAC address for %s (%s)", |
4470 | ofproto->name, netdev_get_name(port->netdev), | |
4471 | strerror(error)); | |
064af421 | 4472 | } |
fa60c019 | 4473 | return ofproto->fallback_dpid; |
064af421 BP |
4474 | } |
4475 | ||
4476 | static uint64_t | |
4477 | pick_fallback_dpid(void) | |
4478 | { | |
4479 | uint8_t ea[ETH_ADDR_LEN]; | |
70150daf | 4480 | eth_addr_nicira_random(ea); |
064af421 BP |
4481 | return eth_addr_to_uint64(ea); |
4482 | } | |
4483 | \f | |
254750ce BP |
4484 | /* Table overflow policy. */ |
4485 | ||
4486 | /* Chooses and returns a rule to evict from 'table'. Returns NULL if the table | |
4487 | * is not configured to evict rules or if the table contains no evictable | |
4488 | * rules. (Rules with 'evictable' set to false or with no timeouts are not | |
4489 | * evictable.) */ | |
4490 | static struct rule * | |
4491 | choose_rule_to_evict(struct oftable *table) | |
4492 | { | |
4493 | struct eviction_group *evg; | |
4494 | ||
4495 | if (!table->eviction_fields) { | |
4496 | return NULL; | |
4497 | } | |
4498 | ||
4499 | /* In the common case, the outer and inner loops here will each be entered | |
4500 | * exactly once: | |
4501 | * | |
4502 | * - The inner loop normally "return"s in its first iteration. If the | |
4503 | * eviction group has any evictable rules, then it always returns in | |
4504 | * some iteration. | |
4505 | * | |
4506 | * - The outer loop only iterates more than once if the largest eviction | |
4507 | * group has no evictable rules. | |
4508 | * | |
4509 | * - The outer loop can exit only if table's 'max_flows' is all filled up | |
4510 | * by unevictable rules'. */ | |
4511 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { | |
4512 | struct rule *rule; | |
4513 | ||
4514 | HEAP_FOR_EACH (rule, evg_node, &evg->rules) { | |
4515 | if (rule->evictable) { | |
4516 | return rule; | |
4517 | } | |
4518 | } | |
4519 | } | |
4520 | ||
4521 | return NULL; | |
4522 | } | |
4523 | ||
4524 | /* Searches 'ofproto' for tables that have more flows than their configured | |
4525 | * maximum and that have flow eviction enabled, and evicts as many flows as | |
4526 | * necessary and currently feasible from them. | |
4527 | * | |
4528 | * This triggers only when an OpenFlow table has N flows in it and then the | |
4529 | * client configures a maximum number of flows less than N. */ | |
4530 | static void | |
4531 | ofproto_evict(struct ofproto *ofproto) | |
4532 | { | |
4533 | struct ofopgroup *group; | |
4534 | struct oftable *table; | |
4535 | ||
4536 | group = ofopgroup_create_unattached(ofproto); | |
4537 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
4538 | while (classifier_count(&table->cls) > table->max_flows | |
4539 | && table->eviction_fields) { | |
4540 | struct rule *rule; | |
4541 | ||
4542 | rule = choose_rule_to_evict(table); | |
4543 | if (!rule || rule->pending) { | |
4544 | break; | |
4545 | } | |
4546 | ||
2b07c8b1 BP |
4547 | ofoperation_create(group, rule, |
4548 | OFOPERATION_DELETE, OFPRR_EVICTION); | |
254750ce BP |
4549 | oftable_remove_rule(rule); |
4550 | ofproto->ofproto_class->rule_destruct(rule); | |
4551 | } | |
4552 | } | |
4553 | ofopgroup_submit(group); | |
4554 | } | |
4555 | \f | |
4556 | /* Eviction groups. */ | |
4557 | ||
4558 | /* Returns the priority to use for an eviction_group that contains 'n_rules' | |
4559 | * rules. The priority contains low-order random bits to ensure that eviction | |
4560 | * groups with the same number of rules are prioritized randomly. */ | |
4561 | static uint32_t | |
4562 | eviction_group_priority(size_t n_rules) | |
4563 | { | |
4564 | uint16_t size = MIN(UINT16_MAX, n_rules); | |
4565 | return (size << 16) | random_uint16(); | |
4566 | } | |
4567 | ||
4568 | /* Updates 'evg', an eviction_group within 'table', following a change that | |
4569 | * adds or removes rules in 'evg'. */ | |
4570 | static void | |
4571 | eviction_group_resized(struct oftable *table, struct eviction_group *evg) | |
4572 | { | |
4573 | heap_change(&table->eviction_groups_by_size, &evg->size_node, | |
4574 | eviction_group_priority(heap_count(&evg->rules))); | |
4575 | } | |
4576 | ||
4577 | /* Destroys 'evg', an eviction_group within 'table': | |
4578 | * | |
4579 | * - Removes all the rules, if any, from 'evg'. (It doesn't destroy the | |
4580 | * rules themselves, just removes them from the eviction group.) | |
4581 | * | |
4582 | * - Removes 'evg' from 'table'. | |
4583 | * | |
4584 | * - Frees 'evg'. */ | |
4585 | static void | |
4586 | eviction_group_destroy(struct oftable *table, struct eviction_group *evg) | |
4587 | { | |
4588 | while (!heap_is_empty(&evg->rules)) { | |
4589 | struct rule *rule; | |
4590 | ||
4591 | rule = CONTAINER_OF(heap_pop(&evg->rules), struct rule, evg_node); | |
4592 | rule->eviction_group = NULL; | |
4593 | } | |
4594 | hmap_remove(&table->eviction_groups_by_id, &evg->id_node); | |
4595 | heap_remove(&table->eviction_groups_by_size, &evg->size_node); | |
4596 | heap_destroy(&evg->rules); | |
4597 | free(evg); | |
4598 | } | |
4599 | ||
4600 | /* Removes 'rule' from its eviction group, if any. */ | |
4601 | static void | |
4602 | eviction_group_remove_rule(struct rule *rule) | |
4603 | { | |
4604 | if (rule->eviction_group) { | |
4605 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
4606 | struct eviction_group *evg = rule->eviction_group; | |
4607 | ||
4608 | rule->eviction_group = NULL; | |
4609 | heap_remove(&evg->rules, &rule->evg_node); | |
4610 | if (heap_is_empty(&evg->rules)) { | |
4611 | eviction_group_destroy(table, evg); | |
4612 | } else { | |
4613 | eviction_group_resized(table, evg); | |
4614 | } | |
4615 | } | |
4616 | } | |
4617 | ||
4618 | /* Hashes the 'rule''s values for the eviction_fields of 'rule''s table, and | |
4619 | * returns the hash value. */ | |
4620 | static uint32_t | |
4621 | eviction_group_hash_rule(struct rule *rule) | |
4622 | { | |
4623 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
4624 | const struct mf_subfield *sf; | |
5cb7a798 | 4625 | struct flow flow; |
254750ce BP |
4626 | uint32_t hash; |
4627 | ||
4628 | hash = table->eviction_group_id_basis; | |
5cb7a798 | 4629 | miniflow_expand(&rule->cr.match.flow, &flow); |
254750ce BP |
4630 | for (sf = table->eviction_fields; |
4631 | sf < &table->eviction_fields[table->n_eviction_fields]; | |
4632 | sf++) | |
4633 | { | |
5cb7a798 | 4634 | if (mf_are_prereqs_ok(sf->field, &flow)) { |
254750ce BP |
4635 | union mf_value value; |
4636 | ||
5cb7a798 | 4637 | mf_get_value(sf->field, &flow, &value); |
254750ce BP |
4638 | if (sf->ofs) { |
4639 | bitwise_zero(&value, sf->field->n_bytes, 0, sf->ofs); | |
4640 | } | |
4641 | if (sf->ofs + sf->n_bits < sf->field->n_bytes * 8) { | |
4642 | unsigned int start = sf->ofs + sf->n_bits; | |
4643 | bitwise_zero(&value, sf->field->n_bytes, start, | |
4644 | sf->field->n_bytes * 8 - start); | |
4645 | } | |
4646 | hash = hash_bytes(&value, sf->field->n_bytes, hash); | |
4647 | } else { | |
4648 | hash = hash_int(hash, 0); | |
4649 | } | |
4650 | } | |
4651 | ||
4652 | return hash; | |
4653 | } | |
4654 | ||
4655 | /* Returns an eviction group within 'table' with the given 'id', creating one | |
4656 | * if necessary. */ | |
4657 | static struct eviction_group * | |
4658 | eviction_group_find(struct oftable *table, uint32_t id) | |
4659 | { | |
4660 | struct eviction_group *evg; | |
4661 | ||
4662 | HMAP_FOR_EACH_WITH_HASH (evg, id_node, id, &table->eviction_groups_by_id) { | |
4663 | return evg; | |
4664 | } | |
4665 | ||
4666 | evg = xmalloc(sizeof *evg); | |
4667 | hmap_insert(&table->eviction_groups_by_id, &evg->id_node, id); | |
4668 | heap_insert(&table->eviction_groups_by_size, &evg->size_node, | |
4669 | eviction_group_priority(0)); | |
4670 | heap_init(&evg->rules); | |
4671 | ||
4672 | return evg; | |
4673 | } | |
4674 | ||
4675 | /* Returns an eviction priority for 'rule'. The return value should be | |
4676 | * interpreted so that higher priorities make a rule more attractive candidates | |
4677 | * for eviction. */ | |
4678 | static uint32_t | |
4679 | rule_eviction_priority(struct rule *rule) | |
4680 | { | |
4681 | long long int hard_expiration; | |
4682 | long long int idle_expiration; | |
4683 | long long int expiration; | |
4684 | uint32_t expiration_offset; | |
4685 | ||
4686 | /* Calculate time of expiration. */ | |
4687 | hard_expiration = (rule->hard_timeout | |
4688 | ? rule->modified + rule->hard_timeout * 1000 | |
4689 | : LLONG_MAX); | |
4690 | idle_expiration = (rule->idle_timeout | |
4691 | ? rule->used + rule->idle_timeout * 1000 | |
4692 | : LLONG_MAX); | |
4693 | expiration = MIN(hard_expiration, idle_expiration); | |
4694 | if (expiration == LLONG_MAX) { | |
4695 | return 0; | |
4696 | } | |
4697 | ||
4698 | /* Calculate the time of expiration as a number of (approximate) seconds | |
4699 | * after program startup. | |
4700 | * | |
4701 | * This should work OK for program runs that last UINT32_MAX seconds or | |
4702 | * less. Therefore, please restart OVS at least once every 136 years. */ | |
4703 | expiration_offset = (expiration >> 10) - (time_boot_msec() >> 10); | |
4704 | ||
4705 | /* Invert the expiration offset because we're using a max-heap. */ | |
4706 | return UINT32_MAX - expiration_offset; | |
4707 | } | |
4708 | ||
4709 | /* Adds 'rule' to an appropriate eviction group for its oftable's | |
4710 | * configuration. Does nothing if 'rule''s oftable doesn't have eviction | |
4711 | * enabled, or if 'rule' is a permanent rule (one that will never expire on its | |
4712 | * own). | |
4713 | * | |
4714 | * The caller must ensure that 'rule' is not already in an eviction group. */ | |
4715 | static void | |
4716 | eviction_group_add_rule(struct rule *rule) | |
4717 | { | |
4718 | struct ofproto *ofproto = rule->ofproto; | |
4719 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
4720 | ||
4721 | if (table->eviction_fields | |
4722 | && (rule->hard_timeout || rule->idle_timeout)) { | |
4723 | struct eviction_group *evg; | |
4724 | ||
4725 | evg = eviction_group_find(table, eviction_group_hash_rule(rule)); | |
4726 | ||
4727 | rule->eviction_group = evg; | |
4728 | heap_insert(&evg->rules, &rule->evg_node, | |
4729 | rule_eviction_priority(rule)); | |
4730 | eviction_group_resized(table, evg); | |
4731 | } | |
4732 | } | |
4733 | \f | |
d0918789 BP |
4734 | /* oftables. */ |
4735 | ||
4736 | /* Initializes 'table'. */ | |
4737 | static void | |
4738 | oftable_init(struct oftable *table) | |
4739 | { | |
5c67e4af | 4740 | memset(table, 0, sizeof *table); |
d0918789 | 4741 | classifier_init(&table->cls); |
ec1c5c7e | 4742 | table->max_flows = UINT_MAX; |
d0918789 BP |
4743 | } |
4744 | ||
254750ce | 4745 | /* Destroys 'table', including its classifier and eviction groups. |
d0918789 BP |
4746 | * |
4747 | * The caller is responsible for freeing 'table' itself. */ | |
4748 | static void | |
4749 | oftable_destroy(struct oftable *table) | |
4750 | { | |
cb22974d | 4751 | ovs_assert(classifier_is_empty(&table->cls)); |
254750ce | 4752 | oftable_disable_eviction(table); |
d0918789 | 4753 | classifier_destroy(&table->cls); |
254750ce BP |
4754 | free(table->name); |
4755 | } | |
4756 | ||
4757 | /* Changes the name of 'table' to 'name'. If 'name' is NULL or the empty | |
4758 | * string, then 'table' will use its default name. | |
4759 | * | |
4760 | * This only affects the name exposed for a table exposed through the OpenFlow | |
4761 | * OFPST_TABLE (as printed by "ovs-ofctl dump-tables"). */ | |
4762 | static void | |
4763 | oftable_set_name(struct oftable *table, const char *name) | |
4764 | { | |
4765 | if (name && name[0]) { | |
4766 | int len = strnlen(name, OFP_MAX_TABLE_NAME_LEN); | |
4767 | if (!table->name || strncmp(name, table->name, len)) { | |
4768 | free(table->name); | |
4769 | table->name = xmemdup0(name, len); | |
4770 | } | |
4771 | } else { | |
4772 | free(table->name); | |
4773 | table->name = NULL; | |
4774 | } | |
4775 | } | |
4776 | ||
4777 | /* oftables support a choice of two policies when adding a rule would cause the | |
4778 | * number of flows in the table to exceed the configured maximum number: either | |
4779 | * they can refuse to add the new flow or they can evict some existing flow. | |
4780 | * This function configures the former policy on 'table'. */ | |
4781 | static void | |
4782 | oftable_disable_eviction(struct oftable *table) | |
4783 | { | |
4784 | if (table->eviction_fields) { | |
4785 | struct eviction_group *evg, *next; | |
4786 | ||
4787 | HMAP_FOR_EACH_SAFE (evg, next, id_node, | |
4788 | &table->eviction_groups_by_id) { | |
4789 | eviction_group_destroy(table, evg); | |
4790 | } | |
4791 | hmap_destroy(&table->eviction_groups_by_id); | |
4792 | heap_destroy(&table->eviction_groups_by_size); | |
4793 | ||
4794 | free(table->eviction_fields); | |
4795 | table->eviction_fields = NULL; | |
4796 | table->n_eviction_fields = 0; | |
4797 | } | |
4798 | } | |
4799 | ||
4800 | /* oftables support a choice of two policies when adding a rule would cause the | |
4801 | * number of flows in the table to exceed the configured maximum number: either | |
4802 | * they can refuse to add the new flow or they can evict some existing flow. | |
4803 | * This function configures the latter policy on 'table', with fairness based | |
4804 | * on the values of the 'n_fields' fields specified in 'fields'. (Specifying | |
4805 | * 'n_fields' as 0 disables fairness.) */ | |
4806 | static void | |
4807 | oftable_enable_eviction(struct oftable *table, | |
4808 | const struct mf_subfield *fields, size_t n_fields) | |
4809 | { | |
4810 | struct cls_cursor cursor; | |
4811 | struct rule *rule; | |
4812 | ||
4813 | if (table->eviction_fields | |
4814 | && n_fields == table->n_eviction_fields | |
4815 | && (!n_fields | |
4816 | || !memcmp(fields, table->eviction_fields, | |
4817 | n_fields * sizeof *fields))) { | |
4818 | /* No change. */ | |
4819 | return; | |
4820 | } | |
4821 | ||
4822 | oftable_disable_eviction(table); | |
4823 | ||
4824 | table->n_eviction_fields = n_fields; | |
4825 | table->eviction_fields = xmemdup(fields, n_fields * sizeof *fields); | |
4826 | ||
4827 | table->eviction_group_id_basis = random_uint32(); | |
4828 | hmap_init(&table->eviction_groups_by_id); | |
4829 | heap_init(&table->eviction_groups_by_size); | |
4830 | ||
4831 | cls_cursor_init(&cursor, &table->cls, NULL); | |
4832 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { | |
4833 | eviction_group_add_rule(rule); | |
4834 | } | |
d0918789 BP |
4835 | } |
4836 | ||
4837 | /* Removes 'rule' from the oftable that contains it. */ | |
4838 | static void | |
4839 | oftable_remove_rule(struct rule *rule) | |
4840 | { | |
4841 | struct ofproto *ofproto = rule->ofproto; | |
4842 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
4843 | ||
4844 | classifier_remove(&table->cls, &rule->cr); | |
254750ce | 4845 | eviction_group_remove_rule(rule); |
e503cc19 SH |
4846 | if (!list_is_empty(&rule->expirable)) { |
4847 | list_remove(&rule->expirable); | |
4848 | } | |
d0918789 BP |
4849 | } |
4850 | ||
4851 | /* Inserts 'rule' into its oftable. Removes any existing rule from 'rule''s | |
4852 | * oftable that has an identical cls_rule. Returns the rule that was removed, | |
4853 | * if any, and otherwise NULL. */ | |
4854 | static struct rule * | |
4855 | oftable_replace_rule(struct rule *rule) | |
4856 | { | |
4857 | struct ofproto *ofproto = rule->ofproto; | |
4858 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
254750ce | 4859 | struct rule *victim; |
e503cc19 SH |
4860 | bool may_expire = rule->hard_timeout || rule->idle_timeout; |
4861 | ||
4862 | if (may_expire) { | |
4863 | list_insert(&ofproto->expirable, &rule->expirable); | |
4864 | } | |
d0918789 | 4865 | |
254750ce BP |
4866 | victim = rule_from_cls_rule(classifier_replace(&table->cls, &rule->cr)); |
4867 | if (victim) { | |
d6e95e99 BP |
4868 | if (!list_is_empty(&victim->expirable)) { |
4869 | list_remove(&victim->expirable); | |
4870 | } | |
254750ce BP |
4871 | eviction_group_remove_rule(victim); |
4872 | } | |
4873 | eviction_group_add_rule(rule); | |
4874 | return victim; | |
d0918789 BP |
4875 | } |
4876 | ||
4877 | /* Removes 'old' from its oftable then, if 'new' is nonnull, inserts 'new'. */ | |
4878 | static void | |
4879 | oftable_substitute_rule(struct rule *old, struct rule *new) | |
4880 | { | |
4881 | if (new) { | |
4882 | oftable_replace_rule(new); | |
4883 | } else { | |
4884 | oftable_remove_rule(old); | |
4885 | } | |
4886 | } | |
4887 | \f | |
abe529af | 4888 | /* unixctl commands. */ |
7aa697dd | 4889 | |
abe529af | 4890 | struct ofproto * |
2ac6bedd | 4891 | ofproto_lookup(const char *name) |
7aa697dd | 4892 | { |
2ac6bedd | 4893 | struct ofproto *ofproto; |
7aa697dd | 4894 | |
2ac6bedd BP |
4895 | HMAP_FOR_EACH_WITH_HASH (ofproto, hmap_node, hash_string(name, 0), |
4896 | &all_ofprotos) { | |
4897 | if (!strcmp(ofproto->name, name)) { | |
4898 | return ofproto; | |
4899 | } | |
7aa697dd | 4900 | } |
2ac6bedd | 4901 | return NULL; |
7aa697dd BP |
4902 | } |
4903 | ||
4904 | static void | |
0e15264f BP |
4905 | ofproto_unixctl_list(struct unixctl_conn *conn, int argc OVS_UNUSED, |
4906 | const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED) | |
7aa697dd | 4907 | { |
7aa697dd | 4908 | struct ofproto *ofproto; |
7aa697dd | 4909 | struct ds results; |
7aa697dd | 4910 | |
7aa697dd | 4911 | ds_init(&results); |
2ac6bedd BP |
4912 | HMAP_FOR_EACH (ofproto, hmap_node, &all_ofprotos) { |
4913 | ds_put_format(&results, "%s\n", ofproto->name); | |
7aa697dd | 4914 | } |
bde9f75d | 4915 | unixctl_command_reply(conn, ds_cstr(&results)); |
7aa697dd | 4916 | ds_destroy(&results); |
7aa697dd BP |
4917 | } |
4918 | ||
4919 | static void | |
4920 | ofproto_unixctl_init(void) | |
4921 | { | |
4922 | static bool registered; | |
4923 | if (registered) { | |
4924 | return; | |
4925 | } | |
4926 | registered = true; | |
4927 | ||
0e15264f BP |
4928 | unixctl_command_register("ofproto/list", "", 0, 0, |
4929 | ofproto_unixctl_list, NULL); | |
064af421 | 4930 | } |
52a90c29 BP |
4931 | \f |
4932 | /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.) | |
4933 | * | |
4934 | * This is deprecated. It is only for compatibility with broken device drivers | |
4935 | * in old versions of Linux that do not properly support VLANs when VLAN | |
4936 | * devices are not used. When broken device drivers are no longer in | |
4937 | * widespread use, we will delete these interfaces. */ | |
4938 | ||
4939 | /* Sets a 1-bit in the 4096-bit 'vlan_bitmap' for each VLAN ID that is matched | |
4940 | * (exactly) by an OpenFlow rule in 'ofproto'. */ | |
4941 | void | |
4942 | ofproto_get_vlan_usage(struct ofproto *ofproto, unsigned long int *vlan_bitmap) | |
4943 | { | |
d0918789 | 4944 | const struct oftable *oftable; |
52a90c29 BP |
4945 | |
4946 | free(ofproto->vlan_bitmap); | |
4947 | ofproto->vlan_bitmap = bitmap_allocate(4096); | |
4948 | ofproto->vlans_changed = false; | |
4949 | ||
d0918789 | 4950 | OFPROTO_FOR_EACH_TABLE (oftable, ofproto) { |
52a90c29 BP |
4951 | const struct cls_table *table; |
4952 | ||
d0918789 | 4953 | HMAP_FOR_EACH (table, hmap_node, &oftable->cls.tables) { |
5cb7a798 | 4954 | if (minimask_get_vid_mask(&table->mask) == VLAN_VID_MASK) { |
52a90c29 BP |
4955 | const struct cls_rule *rule; |
4956 | ||
4957 | HMAP_FOR_EACH (rule, hmap_node, &table->rules) { | |
5cb7a798 | 4958 | uint16_t vid = miniflow_get_vid(&rule->match.flow); |
52a90c29 BP |
4959 | bitmap_set1(vlan_bitmap, vid); |
4960 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
4961 | } | |
4962 | } | |
4963 | } | |
4964 | } | |
4965 | } | |
4966 | ||
4967 | /* Returns true if new VLANs have come into use by the flow table since the | |
4968 | * last call to ofproto_get_vlan_usage(). | |
4969 | * | |
4970 | * We don't track when old VLANs stop being used. */ | |
4971 | bool | |
4972 | ofproto_has_vlan_usage_changed(const struct ofproto *ofproto) | |
4973 | { | |
4974 | return ofproto->vlans_changed; | |
4975 | } | |
4976 | ||
4977 | /* Configures a VLAN splinter binding between the ports identified by OpenFlow | |
4978 | * port numbers 'vlandev_ofp_port' and 'realdev_ofp_port'. If | |
4979 | * 'realdev_ofp_port' is nonzero, then the VLAN device is enslaved to the real | |
4980 | * device as a VLAN splinter for VLAN ID 'vid'. If 'realdev_ofp_port' is zero, | |
4981 | * then the VLAN device is un-enslaved. */ | |
4982 | int | |
4983 | ofproto_port_set_realdev(struct ofproto *ofproto, uint16_t vlandev_ofp_port, | |
4984 | uint16_t realdev_ofp_port, int vid) | |
4985 | { | |
4986 | struct ofport *ofport; | |
4987 | int error; | |
4988 | ||
cb22974d | 4989 | ovs_assert(vlandev_ofp_port != realdev_ofp_port); |
52a90c29 BP |
4990 | |
4991 | ofport = ofproto_get_port(ofproto, vlandev_ofp_port); | |
4992 | if (!ofport) { | |
4993 | VLOG_WARN("%s: cannot set realdev on nonexistent port %"PRIu16, | |
4994 | ofproto->name, vlandev_ofp_port); | |
4995 | return EINVAL; | |
4996 | } | |
4997 | ||
4998 | if (!ofproto->ofproto_class->set_realdev) { | |
4999 | if (!vlandev_ofp_port) { | |
5000 | return 0; | |
5001 | } | |
5002 | VLOG_WARN("%s: vlan splinters not supported", ofproto->name); | |
5003 | return EOPNOTSUPP; | |
5004 | } | |
5005 | ||
5006 | error = ofproto->ofproto_class->set_realdev(ofport, realdev_ofp_port, vid); | |
5007 | if (error) { | |
5008 | VLOG_WARN("%s: setting realdev on port %"PRIu16" (%s) failed (%s)", | |
5009 | ofproto->name, vlandev_ofp_port, | |
5010 | netdev_get_name(ofport->netdev), strerror(error)); | |
5011 | } | |
5012 | return error; | |
5013 | } |