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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; | |
abe529af | 422 | ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name); |
7ee20df1 BP |
423 | ofproto->state = S_OPENFLOW; |
424 | list_init(&ofproto->pending); | |
dd5616b3 | 425 | ofproto->n_pending = 0; |
7ee20df1 | 426 | hmap_init(&ofproto->deletions); |
a5b8d268 BP |
427 | ofproto->n_add = ofproto->n_delete = ofproto->n_modify = 0; |
428 | ofproto->first_op = ofproto->last_op = LLONG_MIN; | |
429 | ofproto->next_op_report = LLONG_MAX; | |
430 | ofproto->op_backoff = LLONG_MIN; | |
52a90c29 BP |
431 | ofproto->vlan_bitmap = NULL; |
432 | ofproto->vlans_changed = false; | |
ada3428f | 433 | ofproto->min_mtu = INT_MAX; |
abe529af | 434 | |
0f5f95a9 | 435 | error = ofproto->ofproto_class->construct(ofproto); |
19a87e36 | 436 | if (error) { |
abe529af BP |
437 | VLOG_ERR("failed to open datapath %s: %s", |
438 | datapath_name, strerror(error)); | |
439 | ofproto_destroy__(ofproto); | |
19a87e36 BP |
440 | return error; |
441 | } | |
073e2a6f | 442 | |
e1b1d06a JP |
443 | /* The "max_ports" member should have been set by ->construct(ofproto). |
444 | * Port 0 is not a valid OpenFlow port, so mark that as unavailable. */ | |
445 | ofproto->ofp_port_ids = bitmap_allocate(ofproto->max_ports); | |
446 | bitmap_set1(ofproto->ofp_port_ids, 0); | |
447 | ||
c2f0373a | 448 | /* Check that hidden tables, if any, are at the end. */ |
cb22974d | 449 | ovs_assert(ofproto->n_tables); |
c2f0373a BP |
450 | for (i = 0; i + 1 < ofproto->n_tables; i++) { |
451 | enum oftable_flags flags = ofproto->tables[i].flags; | |
452 | enum oftable_flags next_flags = ofproto->tables[i + 1].flags; | |
453 | ||
cb22974d | 454 | ovs_assert(!(flags & OFTABLE_HIDDEN) || next_flags & OFTABLE_HIDDEN); |
c2f0373a | 455 | } |
19a87e36 | 456 | |
abe529af | 457 | ofproto->datapath_id = pick_datapath_id(ofproto); |
abe529af | 458 | init_ports(ofproto); |
7aa697dd | 459 | |
abe529af | 460 | *ofprotop = ofproto; |
064af421 BP |
461 | return 0; |
462 | } | |
463 | ||
91858960 BP |
464 | /* Must be called (only) by an ofproto implementation in its constructor |
465 | * function. See the large comment on 'construct' in struct ofproto_class for | |
466 | * details. */ | |
0f5f95a9 BP |
467 | void |
468 | ofproto_init_tables(struct ofproto *ofproto, int n_tables) | |
469 | { | |
470 | struct oftable *table; | |
471 | ||
cb22974d BP |
472 | ovs_assert(!ofproto->n_tables); |
473 | ovs_assert(n_tables >= 1 && n_tables <= 255); | |
0f5f95a9 BP |
474 | |
475 | ofproto->n_tables = n_tables; | |
476 | ofproto->tables = xmalloc(n_tables * sizeof *ofproto->tables); | |
477 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
478 | oftable_init(table); | |
479 | } | |
480 | } | |
481 | ||
91858960 BP |
482 | /* To be optionally called (only) by an ofproto implementation in its |
483 | * constructor function. See the large comment on 'construct' in struct | |
484 | * ofproto_class for details. | |
485 | * | |
486 | * Sets the maximum number of ports to 'max_ports'. The ofproto generic layer | |
487 | * will then ensure that actions passed into the ofproto implementation will | |
488 | * not refer to OpenFlow ports numbered 'max_ports' or higher. If this | |
489 | * function is not called, there will be no such restriction. | |
490 | * | |
491 | * Reserved ports numbered OFPP_MAX and higher are special and not subject to | |
492 | * the 'max_ports' restriction. */ | |
493 | void | |
494 | ofproto_init_max_ports(struct ofproto *ofproto, uint16_t max_ports) | |
495 | { | |
cb22974d | 496 | ovs_assert(max_ports <= OFPP_MAX); |
91858960 BP |
497 | ofproto->max_ports = max_ports; |
498 | } | |
499 | ||
e825ace2 BP |
500 | uint64_t |
501 | ofproto_get_datapath_id(const struct ofproto *ofproto) | |
502 | { | |
503 | return ofproto->datapath_id; | |
504 | } | |
505 | ||
064af421 BP |
506 | void |
507 | ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id) | |
508 | { | |
509 | uint64_t old_dpid = p->datapath_id; | |
fa60c019 | 510 | p->datapath_id = datapath_id ? datapath_id : pick_datapath_id(p); |
064af421 | 511 | if (p->datapath_id != old_dpid) { |
76ce9432 BP |
512 | /* Force all active connections to reconnect, since there is no way to |
513 | * notify a controller that the datapath ID has changed. */ | |
fa05809b | 514 | ofproto_reconnect_controllers(p); |
064af421 BP |
515 | } |
516 | } | |
517 | ||
76ce9432 BP |
518 | void |
519 | ofproto_set_controllers(struct ofproto *p, | |
520 | const struct ofproto_controller *controllers, | |
1d9ffc17 | 521 | size_t n_controllers, uint32_t allowed_versions) |
76ce9432 | 522 | { |
1d9ffc17 SH |
523 | connmgr_set_controllers(p->connmgr, controllers, n_controllers, |
524 | allowed_versions); | |
064af421 BP |
525 | } |
526 | ||
31681a5d JP |
527 | void |
528 | ofproto_set_fail_mode(struct ofproto *p, enum ofproto_fail_mode fail_mode) | |
529 | { | |
19a87e36 | 530 | connmgr_set_fail_mode(p->connmgr, fail_mode); |
31681a5d JP |
531 | } |
532 | ||
fa05809b BP |
533 | /* Drops the connections between 'ofproto' and all of its controllers, forcing |
534 | * them to reconnect. */ | |
535 | void | |
536 | ofproto_reconnect_controllers(struct ofproto *ofproto) | |
537 | { | |
19a87e36 | 538 | connmgr_reconnect(ofproto->connmgr); |
917e50e1 BP |
539 | } |
540 | ||
541 | /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s | |
542 | * in-band control should guarantee access, in the same way that in-band | |
543 | * control guarantees access to OpenFlow controllers. */ | |
544 | void | |
545 | ofproto_set_extra_in_band_remotes(struct ofproto *ofproto, | |
546 | const struct sockaddr_in *extras, size_t n) | |
547 | { | |
19a87e36 | 548 | connmgr_set_extra_in_band_remotes(ofproto->connmgr, extras, n); |
917e50e1 BP |
549 | } |
550 | ||
b1da6250 BP |
551 | /* Sets the OpenFlow queue used by flows set up by in-band control on |
552 | * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control | |
553 | * flows will use the default queue. */ | |
554 | void | |
555 | ofproto_set_in_band_queue(struct ofproto *ofproto, int queue_id) | |
556 | { | |
19a87e36 | 557 | connmgr_set_in_band_queue(ofproto->connmgr, queue_id); |
b1da6250 BP |
558 | } |
559 | ||
084f5290 SH |
560 | /* Sets the number of flows at which eviction from the kernel flow table |
561 | * will occur. */ | |
562 | void | |
563 | ofproto_set_flow_eviction_threshold(struct ofproto *ofproto, unsigned threshold) | |
564 | { | |
565 | if (threshold < OFPROTO_FLOW_EVICTION_THRESHOLD_MIN) { | |
566 | ofproto->flow_eviction_threshold = OFPROTO_FLOW_EVICTION_THRESHOLD_MIN; | |
567 | } else { | |
568 | ofproto->flow_eviction_threshold = threshold; | |
569 | } | |
570 | } | |
571 | ||
b53055f4 | 572 | /* If forward_bpdu is true, the NORMAL action will forward frames with |
8402c74b SS |
573 | * reserved (e.g. STP) destination Ethernet addresses. if forward_bpdu is false, |
574 | * the NORMAL action will drop these frames. */ | |
575 | void | |
576 | ofproto_set_forward_bpdu(struct ofproto *ofproto, bool forward_bpdu) | |
577 | { | |
578 | bool old_val = ofproto->forward_bpdu; | |
579 | ofproto->forward_bpdu = forward_bpdu; | |
580 | if (old_val != ofproto->forward_bpdu) { | |
581 | if (ofproto->ofproto_class->forward_bpdu_changed) { | |
582 | ofproto->ofproto_class->forward_bpdu_changed(ofproto); | |
583 | } | |
b53055f4 | 584 | } |
8402c74b SS |
585 | } |
586 | ||
e764773c | 587 | /* Sets the MAC aging timeout for the OFPP_NORMAL action on 'ofproto' to |
c4069512 BP |
588 | * 'idle_time', in seconds, and the maximum number of MAC table entries to |
589 | * 'max_entries'. */ | |
e764773c | 590 | void |
c4069512 BP |
591 | ofproto_set_mac_table_config(struct ofproto *ofproto, unsigned idle_time, |
592 | size_t max_entries) | |
e764773c | 593 | { |
c4069512 BP |
594 | if (ofproto->ofproto_class->set_mac_table_config) { |
595 | ofproto->ofproto_class->set_mac_table_config(ofproto, idle_time, | |
596 | max_entries); | |
e764773c BP |
597 | } |
598 | } | |
599 | ||
8b6ff729 BP |
600 | void |
601 | ofproto_set_dp_desc(struct ofproto *p, const char *dp_desc) | |
602 | { | |
603 | free(p->dp_desc); | |
604 | p->dp_desc = dp_desc ? xstrdup(dp_desc) : NULL; | |
605 | } | |
606 | ||
064af421 | 607 | int |
81e2083f | 608 | ofproto_set_snoops(struct ofproto *ofproto, const struct sset *snoops) |
064af421 | 609 | { |
19a87e36 | 610 | return connmgr_set_snoops(ofproto->connmgr, snoops); |
064af421 BP |
611 | } |
612 | ||
613 | int | |
0193b2af JG |
614 | ofproto_set_netflow(struct ofproto *ofproto, |
615 | const struct netflow_options *nf_options) | |
064af421 | 616 | { |
abe529af BP |
617 | if (nf_options && sset_is_empty(&nf_options->collectors)) { |
618 | nf_options = NULL; | |
619 | } | |
620 | ||
621 | if (ofproto->ofproto_class->set_netflow) { | |
622 | return ofproto->ofproto_class->set_netflow(ofproto, nf_options); | |
064af421 | 623 | } else { |
abe529af | 624 | return nf_options ? EOPNOTSUPP : 0; |
064af421 BP |
625 | } |
626 | } | |
627 | ||
abe529af | 628 | int |
72b06300 BP |
629 | ofproto_set_sflow(struct ofproto *ofproto, |
630 | const struct ofproto_sflow_options *oso) | |
631 | { | |
abe529af BP |
632 | if (oso && sset_is_empty(&oso->targets)) { |
633 | oso = NULL; | |
634 | } | |
72b06300 | 635 | |
abe529af BP |
636 | if (ofproto->ofproto_class->set_sflow) { |
637 | return ofproto->ofproto_class->set_sflow(ofproto, oso); | |
72b06300 | 638 | } else { |
abe529af | 639 | return oso ? EOPNOTSUPP : 0; |
72b06300 BP |
640 | } |
641 | } | |
e7934396 | 642 | \f |
21f7563c JP |
643 | /* Spanning Tree Protocol (STP) configuration. */ |
644 | ||
645 | /* Configures STP on 'ofproto' using the settings defined in 's'. If | |
646 | * 's' is NULL, disables STP. | |
647 | * | |
648 | * Returns 0 if successful, otherwise a positive errno value. */ | |
649 | int | |
650 | ofproto_set_stp(struct ofproto *ofproto, | |
651 | const struct ofproto_stp_settings *s) | |
652 | { | |
653 | return (ofproto->ofproto_class->set_stp | |
654 | ? ofproto->ofproto_class->set_stp(ofproto, s) | |
655 | : EOPNOTSUPP); | |
656 | } | |
657 | ||
658 | /* Retrieves STP status of 'ofproto' and stores it in 's'. If the | |
659 | * 'enabled' member of 's' is false, then the other members are not | |
660 | * meaningful. | |
661 | * | |
662 | * Returns 0 if successful, otherwise a positive errno value. */ | |
663 | int | |
664 | ofproto_get_stp_status(struct ofproto *ofproto, | |
665 | struct ofproto_stp_status *s) | |
666 | { | |
667 | return (ofproto->ofproto_class->get_stp_status | |
668 | ? ofproto->ofproto_class->get_stp_status(ofproto, s) | |
669 | : EOPNOTSUPP); | |
670 | } | |
671 | ||
672 | /* Configures STP on 'ofp_port' of 'ofproto' using the settings defined | |
673 | * in 's'. The caller is responsible for assigning STP port numbers | |
674 | * (using the 'port_num' member in the range of 1 through 255, inclusive) | |
675 | * and ensuring there are no duplicates. If the 's' is NULL, then STP | |
676 | * is disabled on the port. | |
677 | * | |
678 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
679 | int | |
680 | ofproto_port_set_stp(struct ofproto *ofproto, uint16_t ofp_port, | |
681 | const struct ofproto_port_stp_settings *s) | |
682 | { | |
683 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
684 | if (!ofport) { | |
685 | VLOG_WARN("%s: cannot configure STP on nonexistent port %"PRIu16, | |
686 | ofproto->name, ofp_port); | |
687 | return ENODEV; | |
688 | } | |
689 | ||
690 | return (ofproto->ofproto_class->set_stp_port | |
691 | ? ofproto->ofproto_class->set_stp_port(ofport, s) | |
692 | : EOPNOTSUPP); | |
693 | } | |
694 | ||
695 | /* Retrieves STP port status of 'ofp_port' on 'ofproto' and stores it in | |
696 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
697 | * are not meaningful. | |
698 | * | |
699 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
700 | int | |
701 | ofproto_port_get_stp_status(struct ofproto *ofproto, uint16_t ofp_port, | |
702 | struct ofproto_port_stp_status *s) | |
703 | { | |
704 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
705 | if (!ofport) { | |
b0a5c43b JP |
706 | VLOG_WARN_RL(&rl, "%s: cannot get STP status on nonexistent " |
707 | "port %"PRIu16, ofproto->name, ofp_port); | |
21f7563c JP |
708 | return ENODEV; |
709 | } | |
710 | ||
711 | return (ofproto->ofproto_class->get_stp_port_status | |
712 | ? ofproto->ofproto_class->get_stp_port_status(ofport, s) | |
713 | : EOPNOTSUPP); | |
714 | } | |
715 | \f | |
8b36f51e EJ |
716 | /* Queue DSCP configuration. */ |
717 | ||
718 | /* Registers meta-data associated with the 'n_qdscp' Qualities of Service | |
719 | * 'queues' attached to 'ofport'. This data is not intended to be sufficient | |
720 | * to implement QoS. Instead, it is used to implement features which require | |
721 | * knowledge of what queues exist on a port, and some basic information about | |
722 | * them. | |
723 | * | |
724 | * Returns 0 if successful, otherwise a positive errno value. */ | |
725 | int | |
726 | ofproto_port_set_queues(struct ofproto *ofproto, uint16_t ofp_port, | |
727 | const struct ofproto_port_queue *queues, | |
728 | size_t n_queues) | |
729 | { | |
730 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
731 | ||
732 | if (!ofport) { | |
733 | VLOG_WARN("%s: cannot set queues on nonexistent port %"PRIu16, | |
734 | ofproto->name, ofp_port); | |
735 | return ENODEV; | |
736 | } | |
737 | ||
738 | return (ofproto->ofproto_class->set_queues | |
739 | ? ofproto->ofproto_class->set_queues(ofport, queues, n_queues) | |
740 | : EOPNOTSUPP); | |
741 | } | |
742 | \f | |
e7934396 BP |
743 | /* Connectivity Fault Management configuration. */ |
744 | ||
892815f5 | 745 | /* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */ |
e7934396 | 746 | void |
892815f5 | 747 | ofproto_port_clear_cfm(struct ofproto *ofproto, uint16_t ofp_port) |
e7934396 | 748 | { |
abe529af BP |
749 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
750 | if (ofport && ofproto->ofproto_class->set_cfm) { | |
a5610457 | 751 | ofproto->ofproto_class->set_cfm(ofport, NULL); |
e7934396 BP |
752 | } |
753 | } | |
72b06300 | 754 | |
892815f5 | 755 | /* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes |
93b8df38 EJ |
756 | * basic configuration from the configuration members in 'cfm', and the remote |
757 | * maintenance point ID from remote_mpid. Ignores the statistics members of | |
758 | * 'cfm'. | |
e7934396 | 759 | * |
892815f5 | 760 | * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */ |
e7934396 | 761 | void |
892815f5 | 762 | ofproto_port_set_cfm(struct ofproto *ofproto, uint16_t ofp_port, |
a5610457 | 763 | const struct cfm_settings *s) |
e7934396 BP |
764 | { |
765 | struct ofport *ofport; | |
abe529af | 766 | int error; |
e7934396 | 767 | |
abe529af | 768 | ofport = ofproto_get_port(ofproto, ofp_port); |
e7934396 | 769 | if (!ofport) { |
892815f5 BP |
770 | VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16, |
771 | ofproto->name, ofp_port); | |
e7934396 BP |
772 | return; |
773 | } | |
774 | ||
93b8df38 EJ |
775 | /* XXX: For configuration simplicity, we only support one remote_mpid |
776 | * outside of the CFM module. It's not clear if this is the correct long | |
777 | * term solution or not. */ | |
abe529af | 778 | error = (ofproto->ofproto_class->set_cfm |
a5610457 | 779 | ? ofproto->ofproto_class->set_cfm(ofport, s) |
abe529af BP |
780 | : EOPNOTSUPP); |
781 | if (error) { | |
782 | VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed (%s)", | |
783 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
784 | strerror(error)); | |
e7934396 | 785 | } |
e7934396 | 786 | } |
e7934396 | 787 | |
fa066f01 BP |
788 | /* Checks the status of LACP negotiation for 'ofp_port' within ofproto. |
789 | * Returns 1 if LACP partner information for 'ofp_port' is up-to-date, | |
790 | * 0 if LACP partner information is not current (generally indicating a | |
791 | * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */ | |
792 | int | |
793 | ofproto_port_is_lacp_current(struct ofproto *ofproto, uint16_t ofp_port) | |
794 | { | |
abe529af BP |
795 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
796 | return (ofport && ofproto->ofproto_class->port_is_lacp_current | |
797 | ? ofproto->ofproto_class->port_is_lacp_current(ofport) | |
fa066f01 | 798 | : -1); |
e7934396 | 799 | } |
e7934396 | 800 | \f |
fa066f01 | 801 | /* Bundles. */ |
e7934396 | 802 | |
abe529af BP |
803 | /* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'. |
804 | * A bundle is the same concept as a Port in OVSDB, that is, it consists of one | |
805 | * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN | |
806 | * configuration plus, if there is more than one slave, a bonding | |
807 | * configuration. | |
808 | * | |
809 | * If 'aux' is already registered then this function updates its configuration | |
810 | * to 's'. Otherwise, this function registers a new bundle. | |
811 | * | |
812 | * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL | |
813 | * port. */ | |
814 | int | |
815 | ofproto_bundle_register(struct ofproto *ofproto, void *aux, | |
816 | const struct ofproto_bundle_settings *s) | |
fa066f01 | 817 | { |
abe529af BP |
818 | return (ofproto->ofproto_class->bundle_set |
819 | ? ofproto->ofproto_class->bundle_set(ofproto, aux, s) | |
820 | : EOPNOTSUPP); | |
fa066f01 BP |
821 | } |
822 | ||
abe529af BP |
823 | /* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'. |
824 | * If no such bundle has been registered, this has no effect. */ | |
825 | int | |
826 | ofproto_bundle_unregister(struct ofproto *ofproto, void *aux) | |
e7934396 | 827 | { |
abe529af | 828 | return ofproto_bundle_register(ofproto, aux, NULL); |
e7934396 | 829 | } |
fa066f01 | 830 | |
e7934396 | 831 | \f |
abe529af BP |
832 | /* Registers a mirror associated with client data pointer 'aux' in 'ofproto'. |
833 | * If 'aux' is already registered then this function updates its configuration | |
c06bba01 | 834 | * to 's'. Otherwise, this function registers a new mirror. */ |
abe529af BP |
835 | int |
836 | ofproto_mirror_register(struct ofproto *ofproto, void *aux, | |
837 | const struct ofproto_mirror_settings *s) | |
064af421 | 838 | { |
abe529af BP |
839 | return (ofproto->ofproto_class->mirror_set |
840 | ? ofproto->ofproto_class->mirror_set(ofproto, aux, s) | |
841 | : EOPNOTSUPP); | |
064af421 BP |
842 | } |
843 | ||
abe529af BP |
844 | /* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'. |
845 | * If no mirror has been registered, this has no effect. */ | |
846 | int | |
847 | ofproto_mirror_unregister(struct ofproto *ofproto, void *aux) | |
064af421 | 848 | { |
abe529af | 849 | return ofproto_mirror_register(ofproto, aux, NULL); |
064af421 BP |
850 | } |
851 | ||
9d24de3b JP |
852 | /* Retrieves statistics from mirror associated with client data pointer |
853 | * 'aux' in 'ofproto'. Stores packet and byte counts in 'packets' and | |
854 | * 'bytes', respectively. If a particular counters is not supported, | |
855 | * the appropriate argument is set to UINT64_MAX. */ | |
856 | int | |
857 | ofproto_mirror_get_stats(struct ofproto *ofproto, void *aux, | |
858 | uint64_t *packets, uint64_t *bytes) | |
859 | { | |
860 | if (!ofproto->ofproto_class->mirror_get_stats) { | |
861 | *packets = *bytes = UINT64_MAX; | |
862 | return EOPNOTSUPP; | |
863 | } | |
864 | ||
865 | return ofproto->ofproto_class->mirror_get_stats(ofproto, aux, | |
866 | packets, bytes); | |
867 | } | |
868 | ||
abe529af BP |
869 | /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on |
870 | * which all packets are flooded, instead of using MAC learning. If | |
871 | * 'flood_vlans' is NULL, then MAC learning applies to all VLANs. | |
872 | * | |
873 | * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL | |
874 | * port. */ | |
875 | int | |
876 | ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans) | |
abdfe474 | 877 | { |
abe529af BP |
878 | return (ofproto->ofproto_class->set_flood_vlans |
879 | ? ofproto->ofproto_class->set_flood_vlans(ofproto, flood_vlans) | |
880 | : EOPNOTSUPP); | |
abdfe474 JP |
881 | } |
882 | ||
abe529af BP |
883 | /* Returns true if 'aux' is a registered bundle that is currently in use as the |
884 | * output for a mirror. */ | |
885 | bool | |
b4affc74 | 886 | ofproto_is_mirror_output_bundle(const struct ofproto *ofproto, void *aux) |
abe529af BP |
887 | { |
888 | return (ofproto->ofproto_class->is_mirror_output_bundle | |
889 | ? ofproto->ofproto_class->is_mirror_output_bundle(ofproto, aux) | |
890 | : false); | |
891 | } | |
892 | \f | |
254750ce BP |
893 | /* Configuration of OpenFlow tables. */ |
894 | ||
895 | /* Returns the number of OpenFlow tables in 'ofproto'. */ | |
896 | int | |
897 | ofproto_get_n_tables(const struct ofproto *ofproto) | |
898 | { | |
899 | return ofproto->n_tables; | |
900 | } | |
901 | ||
902 | /* Configures the OpenFlow table in 'ofproto' with id 'table_id' with the | |
903 | * settings from 's'. 'table_id' must be in the range 0 through the number of | |
904 | * OpenFlow tables in 'ofproto' minus 1, inclusive. | |
905 | * | |
906 | * For read-only tables, only the name may be configured. */ | |
907 | void | |
908 | ofproto_configure_table(struct ofproto *ofproto, int table_id, | |
909 | const struct ofproto_table_settings *s) | |
910 | { | |
911 | struct oftable *table; | |
912 | ||
cb22974d | 913 | ovs_assert(table_id >= 0 && table_id < ofproto->n_tables); |
254750ce BP |
914 | table = &ofproto->tables[table_id]; |
915 | ||
916 | oftable_set_name(table, s->name); | |
917 | ||
918 | if (table->flags & OFTABLE_READONLY) { | |
919 | return; | |
920 | } | |
921 | ||
922 | if (s->groups) { | |
923 | oftable_enable_eviction(table, s->groups, s->n_groups); | |
924 | } else { | |
925 | oftable_disable_eviction(table); | |
926 | } | |
927 | ||
928 | table->max_flows = s->max_flows; | |
929 | if (classifier_count(&table->cls) > table->max_flows | |
930 | && table->eviction_fields) { | |
931 | /* 'table' contains more flows than allowed. We might not be able to | |
932 | * evict them right away because of the asynchronous nature of flow | |
933 | * table changes. Schedule eviction for later. */ | |
934 | switch (ofproto->state) { | |
935 | case S_OPENFLOW: | |
936 | ofproto->state = S_EVICT; | |
937 | break; | |
938 | case S_EVICT: | |
939 | case S_FLUSH: | |
940 | /* We're already deleting flows, nothing more to do. */ | |
941 | break; | |
942 | } | |
943 | } | |
944 | } | |
945 | \f | |
81e2083f BP |
946 | bool |
947 | ofproto_has_snoops(const struct ofproto *ofproto) | |
948 | { | |
949 | return connmgr_has_snoops(ofproto->connmgr); | |
950 | } | |
951 | ||
064af421 | 952 | void |
81e2083f | 953 | ofproto_get_snoops(const struct ofproto *ofproto, struct sset *snoops) |
064af421 | 954 | { |
19a87e36 | 955 | connmgr_get_snoops(ofproto->connmgr, snoops); |
064af421 BP |
956 | } |
957 | ||
7ee20df1 BP |
958 | static void |
959 | ofproto_flush__(struct ofproto *ofproto) | |
960 | { | |
7ee20df1 | 961 | struct ofopgroup *group; |
d0918789 | 962 | struct oftable *table; |
7ee20df1 BP |
963 | |
964 | if (ofproto->ofproto_class->flush) { | |
965 | ofproto->ofproto_class->flush(ofproto); | |
966 | } | |
967 | ||
7024dffe | 968 | group = ofopgroup_create_unattached(ofproto); |
b772ded8 | 969 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
7ee20df1 BP |
970 | struct rule *rule, *next_rule; |
971 | struct cls_cursor cursor; | |
972 | ||
5c67e4af BP |
973 | if (table->flags & OFTABLE_HIDDEN) { |
974 | continue; | |
975 | } | |
976 | ||
d0918789 | 977 | cls_cursor_init(&cursor, &table->cls, NULL); |
7ee20df1 BP |
978 | CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) { |
979 | if (!rule->pending) { | |
2b07c8b1 BP |
980 | ofoperation_create(group, rule, OFOPERATION_DELETE, |
981 | OFPRR_DELETE); | |
d0918789 | 982 | oftable_remove_rule(rule); |
7ee20df1 BP |
983 | ofproto->ofproto_class->rule_destruct(rule); |
984 | } | |
985 | } | |
986 | } | |
987 | ofopgroup_submit(group); | |
988 | } | |
989 | ||
abe529af BP |
990 | static void |
991 | ofproto_destroy__(struct ofproto *ofproto) | |
992 | { | |
d0918789 | 993 | struct oftable *table; |
6c1491fb | 994 | |
cb22974d BP |
995 | ovs_assert(list_is_empty(&ofproto->pending)); |
996 | ovs_assert(!ofproto->n_pending); | |
7ee20df1 | 997 | |
abe529af | 998 | connmgr_destroy(ofproto->connmgr); |
fa066f01 | 999 | |
abe529af BP |
1000 | hmap_remove(&all_ofprotos, &ofproto->hmap_node); |
1001 | free(ofproto->name); | |
955a7127 | 1002 | free(ofproto->type); |
abe529af BP |
1003 | free(ofproto->mfr_desc); |
1004 | free(ofproto->hw_desc); | |
1005 | free(ofproto->sw_desc); | |
1006 | free(ofproto->serial_desc); | |
1007 | free(ofproto->dp_desc); | |
abe529af BP |
1008 | hmap_destroy(&ofproto->ports); |
1009 | shash_destroy(&ofproto->port_by_name); | |
e1b1d06a JP |
1010 | bitmap_free(ofproto->ofp_port_ids); |
1011 | simap_destroy(&ofproto->ofp_requests); | |
6c1491fb | 1012 | |
b772ded8 | 1013 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
d0918789 | 1014 | oftable_destroy(table); |
6c1491fb BP |
1015 | } |
1016 | free(ofproto->tables); | |
fa066f01 | 1017 | |
7ee20df1 BP |
1018 | hmap_destroy(&ofproto->deletions); |
1019 | ||
52a90c29 BP |
1020 | free(ofproto->vlan_bitmap); |
1021 | ||
abe529af BP |
1022 | ofproto->ofproto_class->dealloc(ofproto); |
1023 | } | |
fa066f01 | 1024 | |
064af421 BP |
1025 | void |
1026 | ofproto_destroy(struct ofproto *p) | |
1027 | { | |
ca0f572c | 1028 | struct ofport *ofport, *next_ofport; |
064af421 BP |
1029 | |
1030 | if (!p) { | |
1031 | return; | |
1032 | } | |
1033 | ||
7ee20df1 | 1034 | ofproto_flush__(p); |
4e8e4213 | 1035 | HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) { |
abe529af | 1036 | ofport_destroy(ofport); |
064af421 | 1037 | } |
064af421 | 1038 | |
abe529af BP |
1039 | p->ofproto_class->destruct(p); |
1040 | ofproto_destroy__(p); | |
064af421 BP |
1041 | } |
1042 | ||
abe529af BP |
1043 | /* Destroys the datapath with the respective 'name' and 'type'. With the Linux |
1044 | * kernel datapath, for example, this destroys the datapath in the kernel, and | |
1045 | * with the netdev-based datapath, it tears down the data structures that | |
1046 | * represent the datapath. | |
1047 | * | |
1048 | * The datapath should not be currently open as an ofproto. */ | |
064af421 | 1049 | int |
abe529af | 1050 | ofproto_delete(const char *name, const char *type) |
064af421 | 1051 | { |
abe529af BP |
1052 | const struct ofproto_class *class = ofproto_class_find__(type); |
1053 | return (!class ? EAFNOSUPPORT | |
1054 | : !class->del ? EACCES | |
1055 | : class->del(type, name)); | |
064af421 BP |
1056 | } |
1057 | ||
e9e28be3 BP |
1058 | static void |
1059 | process_port_change(struct ofproto *ofproto, int error, char *devname) | |
1060 | { | |
1061 | if (error == ENOBUFS) { | |
1062 | reinit_ports(ofproto); | |
1063 | } else if (!error) { | |
1064 | update_port(ofproto, devname); | |
1065 | free(devname); | |
1066 | } | |
1067 | } | |
1068 | ||
11a574a7 JP |
1069 | int |
1070 | ofproto_type_run(const char *datapath_type) | |
1071 | { | |
1072 | const struct ofproto_class *class; | |
1073 | int error; | |
1074 | ||
1075 | datapath_type = ofproto_normalize_type(datapath_type); | |
1076 | class = ofproto_class_find__(datapath_type); | |
1077 | ||
1078 | error = class->type_run ? class->type_run(datapath_type) : 0; | |
1079 | if (error && error != EAGAIN) { | |
1080 | VLOG_ERR_RL(&rl, "%s: type_run failed (%s)", | |
1081 | datapath_type, strerror(error)); | |
1082 | } | |
1083 | return error; | |
1084 | } | |
1085 | ||
1086 | int | |
1087 | ofproto_type_run_fast(const char *datapath_type) | |
1088 | { | |
1089 | const struct ofproto_class *class; | |
1090 | int error; | |
1091 | ||
1092 | datapath_type = ofproto_normalize_type(datapath_type); | |
1093 | class = ofproto_class_find__(datapath_type); | |
1094 | ||
1095 | error = class->type_run_fast ? class->type_run_fast(datapath_type) : 0; | |
1096 | if (error && error != EAGAIN) { | |
1097 | VLOG_ERR_RL(&rl, "%s: type_run_fast failed (%s)", | |
1098 | datapath_type, strerror(error)); | |
1099 | } | |
1100 | return error; | |
1101 | } | |
1102 | ||
1103 | void | |
1104 | ofproto_type_wait(const char *datapath_type) | |
1105 | { | |
1106 | const struct ofproto_class *class; | |
1107 | ||
1108 | datapath_type = ofproto_normalize_type(datapath_type); | |
1109 | class = ofproto_class_find__(datapath_type); | |
1110 | ||
1111 | if (class->type_wait) { | |
1112 | class->type_wait(datapath_type); | |
1113 | } | |
1114 | } | |
1115 | ||
064af421 | 1116 | int |
abe529af | 1117 | ofproto_run(struct ofproto *p) |
064af421 | 1118 | { |
7436ed80 BP |
1119 | struct sset changed_netdevs; |
1120 | const char *changed_netdev; | |
031d8bff | 1121 | struct ofport *ofport; |
064af421 | 1122 | int error; |
064af421 | 1123 | |
abe529af | 1124 | error = p->ofproto_class->run(p); |
5fcc0d00 BP |
1125 | if (error && error != EAGAIN) { |
1126 | VLOG_ERR_RL(&rl, "%s: run failed (%s)", p->name, strerror(error)); | |
149f577a JG |
1127 | } |
1128 | ||
5bf0e941 | 1129 | if (p->ofproto_class->port_poll) { |
7436ed80 BP |
1130 | char *devname; |
1131 | ||
5bf0e941 BP |
1132 | while ((error = p->ofproto_class->port_poll(p, &devname)) != EAGAIN) { |
1133 | process_port_change(p, error, devname); | |
064af421 | 1134 | } |
e9e28be3 | 1135 | } |
031d8bff | 1136 | |
7436ed80 BP |
1137 | /* Update OpenFlow port status for any port whose netdev has changed. |
1138 | * | |
1139 | * Refreshing a given 'ofport' can cause an arbitrary ofport to be | |
1140 | * destroyed, so it's not safe to update ports directly from the | |
1141 | * HMAP_FOR_EACH loop, or even to use HMAP_FOR_EACH_SAFE. Instead, we | |
1142 | * need this two-phase approach. */ | |
1143 | sset_init(&changed_netdevs); | |
031d8bff EJ |
1144 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { |
1145 | unsigned int change_seq = netdev_change_seq(ofport->netdev); | |
1146 | if (ofport->change_seq != change_seq) { | |
1147 | ofport->change_seq = change_seq; | |
7436ed80 | 1148 | sset_add(&changed_netdevs, netdev_get_name(ofport->netdev)); |
031d8bff | 1149 | } |
064af421 | 1150 | } |
7436ed80 BP |
1151 | SSET_FOR_EACH (changed_netdev, &changed_netdevs) { |
1152 | update_port(p, changed_netdev); | |
1153 | } | |
1154 | sset_destroy(&changed_netdevs); | |
064af421 | 1155 | |
7ee20df1 BP |
1156 | switch (p->state) { |
1157 | case S_OPENFLOW: | |
1158 | connmgr_run(p->connmgr, handle_openflow); | |
1159 | break; | |
1160 | ||
254750ce BP |
1161 | case S_EVICT: |
1162 | connmgr_run(p->connmgr, NULL); | |
1163 | ofproto_evict(p); | |
1164 | if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) { | |
1165 | p->state = S_OPENFLOW; | |
1166 | } | |
1167 | break; | |
1168 | ||
7ee20df1 BP |
1169 | case S_FLUSH: |
1170 | connmgr_run(p->connmgr, NULL); | |
1171 | ofproto_flush__(p); | |
1172 | if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) { | |
1173 | connmgr_flushed(p->connmgr); | |
1174 | p->state = S_OPENFLOW; | |
1175 | } | |
1176 | break; | |
1177 | ||
1178 | default: | |
1179 | NOT_REACHED(); | |
1180 | } | |
064af421 | 1181 | |
a5b8d268 BP |
1182 | if (time_msec() >= p->next_op_report) { |
1183 | long long int ago = (time_msec() - p->first_op) / 1000; | |
1184 | long long int interval = (p->last_op - p->first_op) / 1000; | |
1185 | struct ds s; | |
1186 | ||
1187 | ds_init(&s); | |
1188 | ds_put_format(&s, "%d flow_mods ", | |
1189 | p->n_add + p->n_delete + p->n_modify); | |
1190 | if (interval == ago) { | |
1191 | ds_put_format(&s, "in the last %lld s", ago); | |
1192 | } else if (interval) { | |
1193 | ds_put_format(&s, "in the %lld s starting %lld s ago", | |
1194 | interval, ago); | |
1195 | } else { | |
1196 | ds_put_format(&s, "%lld s ago", ago); | |
1197 | } | |
1198 | ||
1199 | ds_put_cstr(&s, " ("); | |
1200 | if (p->n_add) { | |
1201 | ds_put_format(&s, "%d adds, ", p->n_add); | |
1202 | } | |
1203 | if (p->n_delete) { | |
1204 | ds_put_format(&s, "%d deletes, ", p->n_delete); | |
1205 | } | |
1206 | if (p->n_modify) { | |
1207 | ds_put_format(&s, "%d modifications, ", p->n_modify); | |
1208 | } | |
1209 | s.length -= 2; | |
1210 | ds_put_char(&s, ')'); | |
1211 | ||
fbfa2911 | 1212 | VLOG_INFO("%s: %s", p->name, ds_cstr(&s)); |
a5b8d268 BP |
1213 | ds_destroy(&s); |
1214 | ||
1215 | p->n_add = p->n_delete = p->n_modify = 0; | |
1216 | p->next_op_report = LLONG_MAX; | |
1217 | } | |
1218 | ||
5fcc0d00 BP |
1219 | return error; |
1220 | } | |
1221 | ||
1222 | /* Performs periodic activity required by 'ofproto' that needs to be done | |
1223 | * with the least possible latency. | |
1224 | * | |
1225 | * It makes sense to call this function a couple of times per poll loop, to | |
1226 | * provide a significant performance boost on some benchmarks with the | |
1227 | * ofproto-dpif implementation. */ | |
1228 | int | |
1229 | ofproto_run_fast(struct ofproto *p) | |
1230 | { | |
1231 | int error; | |
1232 | ||
1233 | error = p->ofproto_class->run_fast ? p->ofproto_class->run_fast(p) : 0; | |
1234 | if (error && error != EAGAIN) { | |
1235 | VLOG_ERR_RL(&rl, "%s: fastpath run failed (%s)", | |
1236 | p->name, strerror(error)); | |
1237 | } | |
1238 | return error; | |
064af421 BP |
1239 | } |
1240 | ||
1241 | void | |
1242 | ofproto_wait(struct ofproto *p) | |
1243 | { | |
031d8bff EJ |
1244 | struct ofport *ofport; |
1245 | ||
abe529af | 1246 | p->ofproto_class->wait(p); |
5bf0e941 BP |
1247 | if (p->ofproto_class->port_poll_wait) { |
1248 | p->ofproto_class->port_poll_wait(p); | |
e7934396 | 1249 | } |
031d8bff EJ |
1250 | |
1251 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
1252 | if (ofport->change_seq != netdev_change_seq(ofport->netdev)) { | |
1253 | poll_immediate_wake(); | |
1254 | } | |
1255 | } | |
7ee20df1 BP |
1256 | |
1257 | switch (p->state) { | |
1258 | case S_OPENFLOW: | |
1259 | connmgr_wait(p->connmgr, true); | |
1260 | break; | |
1261 | ||
254750ce | 1262 | case S_EVICT: |
7ee20df1 BP |
1263 | case S_FLUSH: |
1264 | connmgr_wait(p->connmgr, false); | |
1265 | if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) { | |
1266 | poll_immediate_wake(); | |
1267 | } | |
1268 | break; | |
1269 | } | |
064af421 BP |
1270 | } |
1271 | ||
064af421 BP |
1272 | bool |
1273 | ofproto_is_alive(const struct ofproto *p) | |
1274 | { | |
19a87e36 | 1275 | return connmgr_has_controllers(p->connmgr); |
064af421 BP |
1276 | } |
1277 | ||
0d085684 BP |
1278 | /* Adds some memory usage statistics for 'ofproto' into 'usage', for use with |
1279 | * memory_report(). */ | |
1280 | void | |
1281 | ofproto_get_memory_usage(const struct ofproto *ofproto, struct simap *usage) | |
1282 | { | |
1283 | const struct oftable *table; | |
1284 | unsigned int n_rules; | |
1285 | ||
1286 | simap_increase(usage, "ports", hmap_count(&ofproto->ports)); | |
1287 | simap_increase(usage, "ops", | |
1288 | ofproto->n_pending + hmap_count(&ofproto->deletions)); | |
1289 | ||
1290 | n_rules = 0; | |
1291 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
1292 | n_rules += classifier_count(&table->cls); | |
1293 | } | |
1294 | simap_increase(usage, "rules", n_rules); | |
1295 | ||
1296 | if (ofproto->ofproto_class->get_memory_usage) { | |
1297 | ofproto->ofproto_class->get_memory_usage(ofproto, usage); | |
1298 | } | |
1299 | ||
1300 | connmgr_get_memory_usage(ofproto->connmgr, usage); | |
1301 | } | |
1302 | ||
bffc0589 | 1303 | void |
2cdcb898 | 1304 | ofproto_get_ofproto_controller_info(const struct ofproto *ofproto, |
bffc0589 AE |
1305 | struct shash *info) |
1306 | { | |
19a87e36 | 1307 | connmgr_get_controller_info(ofproto->connmgr, info); |
bffc0589 AE |
1308 | } |
1309 | ||
1310 | void | |
1311 | ofproto_free_ofproto_controller_info(struct shash *info) | |
1312 | { | |
72ba2ed3 | 1313 | connmgr_free_controller_info(info); |
bffc0589 AE |
1314 | } |
1315 | ||
b5827b24 BP |
1316 | /* Makes a deep copy of 'old' into 'port'. */ |
1317 | void | |
1318 | ofproto_port_clone(struct ofproto_port *port, const struct ofproto_port *old) | |
1319 | { | |
1320 | port->name = xstrdup(old->name); | |
1321 | port->type = xstrdup(old->type); | |
1322 | port->ofp_port = old->ofp_port; | |
1323 | } | |
1324 | ||
1325 | /* Frees memory allocated to members of 'ofproto_port'. | |
3a6ccc8c | 1326 | * |
b5827b24 BP |
1327 | * Do not call this function on an ofproto_port obtained from |
1328 | * ofproto_port_dump_next(): that function retains ownership of the data in the | |
1329 | * ofproto_port. */ | |
1330 | void | |
1331 | ofproto_port_destroy(struct ofproto_port *ofproto_port) | |
1332 | { | |
1333 | free(ofproto_port->name); | |
1334 | free(ofproto_port->type); | |
1335 | } | |
1336 | ||
b5827b24 | 1337 | /* Initializes 'dump' to begin dumping the ports in an ofproto. |
3a6ccc8c | 1338 | * |
b5827b24 BP |
1339 | * This function provides no status indication. An error status for the entire |
1340 | * dump operation is provided when it is completed by calling | |
1341 | * ofproto_port_dump_done(). | |
1342 | */ | |
1343 | void | |
1344 | ofproto_port_dump_start(struct ofproto_port_dump *dump, | |
1345 | const struct ofproto *ofproto) | |
1346 | { | |
abe529af BP |
1347 | dump->ofproto = ofproto; |
1348 | dump->error = ofproto->ofproto_class->port_dump_start(ofproto, | |
1349 | &dump->state); | |
b5827b24 BP |
1350 | } |
1351 | ||
1352 | /* Attempts to retrieve another port from 'dump', which must have been created | |
1353 | * with ofproto_port_dump_start(). On success, stores a new ofproto_port into | |
1354 | * 'port' and returns true. On failure, returns false. | |
1355 | * | |
1356 | * Failure might indicate an actual error or merely that the last port has been | |
1357 | * dumped. An error status for the entire dump operation is provided when it | |
1358 | * is completed by calling ofproto_port_dump_done(). | |
1359 | * | |
1360 | * The ofproto owns the data stored in 'port'. It will remain valid until at | |
1361 | * least the next time 'dump' is passed to ofproto_port_dump_next() or | |
1362 | * ofproto_port_dump_done(). */ | |
1363 | bool | |
1364 | ofproto_port_dump_next(struct ofproto_port_dump *dump, | |
1365 | struct ofproto_port *port) | |
1366 | { | |
abe529af BP |
1367 | const struct ofproto *ofproto = dump->ofproto; |
1368 | ||
1369 | if (dump->error) { | |
1370 | return false; | |
1371 | } | |
b5827b24 | 1372 | |
abe529af BP |
1373 | dump->error = ofproto->ofproto_class->port_dump_next(ofproto, dump->state, |
1374 | port); | |
1375 | if (dump->error) { | |
1376 | ofproto->ofproto_class->port_dump_done(ofproto, dump->state); | |
1377 | return false; | |
b5827b24 | 1378 | } |
abe529af | 1379 | return true; |
b5827b24 BP |
1380 | } |
1381 | ||
1382 | /* Completes port table dump operation 'dump', which must have been created | |
1383 | * with ofproto_port_dump_start(). Returns 0 if the dump operation was | |
1384 | * error-free, otherwise a positive errno value describing the problem. */ | |
3a6ccc8c | 1385 | int |
b5827b24 | 1386 | ofproto_port_dump_done(struct ofproto_port_dump *dump) |
3a6ccc8c | 1387 | { |
abe529af BP |
1388 | const struct ofproto *ofproto = dump->ofproto; |
1389 | if (!dump->error) { | |
1390 | dump->error = ofproto->ofproto_class->port_dump_done(ofproto, | |
1391 | dump->state); | |
1392 | } | |
1393 | return dump->error == EOF ? 0 : dump->error; | |
b5827b24 BP |
1394 | } |
1395 | ||
0aeaabc8 JP |
1396 | /* Returns the type to pass to netdev_open() when a datapath of type |
1397 | * 'datapath_type' has a port of type 'port_type', for a few special | |
1398 | * cases when a netdev type differs from a port type. For example, when | |
1399 | * using the userspace datapath, a port of type "internal" needs to be | |
1400 | * opened as "tap". | |
1401 | * | |
1402 | * Returns either 'type' itself or a string literal, which must not be | |
1403 | * freed. */ | |
1404 | const char * | |
1405 | ofproto_port_open_type(const char *datapath_type, const char *port_type) | |
1406 | { | |
1407 | const struct ofproto_class *class; | |
1408 | ||
1409 | datapath_type = ofproto_normalize_type(datapath_type); | |
1410 | class = ofproto_class_find__(datapath_type); | |
1411 | if (!class) { | |
1412 | return port_type; | |
1413 | } | |
1414 | ||
1415 | return (class->port_open_type | |
1416 | ? class->port_open_type(datapath_type, port_type) | |
1417 | : port_type); | |
1418 | } | |
1419 | ||
81816a5f JP |
1420 | /* Attempts to add 'netdev' as a port on 'ofproto'. If 'ofp_portp' is |
1421 | * non-null and '*ofp_portp' is not OFPP_NONE, attempts to use that as | |
1422 | * the port's OpenFlow port number. | |
1423 | * | |
1424 | * If successful, returns 0 and sets '*ofp_portp' to the new port's | |
1425 | * OpenFlow port number (if 'ofp_portp' is non-null). On failure, | |
1426 | * returns a positive errno value and sets '*ofp_portp' to OFPP_NONE (if | |
1427 | * 'ofp_portp' is non-null). */ | |
b5827b24 BP |
1428 | int |
1429 | ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev, | |
1430 | uint16_t *ofp_portp) | |
1431 | { | |
81816a5f | 1432 | uint16_t ofp_port = ofp_portp ? *ofp_portp : OFPP_NONE; |
3a6ccc8c BP |
1433 | int error; |
1434 | ||
e1b1d06a | 1435 | error = ofproto->ofproto_class->port_add(ofproto, netdev); |
1fa24dea | 1436 | if (!error) { |
e1b1d06a JP |
1437 | const char *netdev_name = netdev_get_name(netdev); |
1438 | ||
1439 | simap_put(&ofproto->ofp_requests, netdev_name, ofp_port); | |
1440 | update_port(ofproto, netdev_name); | |
1fa24dea | 1441 | } |
b5827b24 | 1442 | if (ofp_portp) { |
e1b1d06a JP |
1443 | struct ofproto_port ofproto_port; |
1444 | ||
1445 | ofproto_port_query_by_name(ofproto, netdev_get_name(netdev), | |
1446 | &ofproto_port); | |
1447 | *ofp_portp = error ? OFPP_NONE : ofproto_port.ofp_port; | |
1448 | ofproto_port_destroy(&ofproto_port); | |
3a6ccc8c BP |
1449 | } |
1450 | return error; | |
1451 | } | |
1452 | ||
b5827b24 BP |
1453 | /* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and |
1454 | * initializes '*port' appropriately; on failure, returns a positive errno | |
1455 | * value. | |
1456 | * | |
abe529af | 1457 | * The caller owns the data in 'ofproto_port' and must free it with |
b5827b24 BP |
1458 | * ofproto_port_destroy() when it is no longer needed. */ |
1459 | int | |
1460 | ofproto_port_query_by_name(const struct ofproto *ofproto, const char *devname, | |
1461 | struct ofproto_port *port) | |
a4e2e1f2 | 1462 | { |
b5827b24 BP |
1463 | int error; |
1464 | ||
abe529af BP |
1465 | error = ofproto->ofproto_class->port_query_by_name(ofproto, devname, port); |
1466 | if (error) { | |
1467 | memset(port, 0, sizeof *port); | |
b5827b24 BP |
1468 | } |
1469 | return error; | |
a4e2e1f2 EJ |
1470 | } |
1471 | ||
b5827b24 | 1472 | /* Deletes port number 'ofp_port' from the datapath for 'ofproto'. |
3a6ccc8c | 1473 | * Returns 0 if successful, otherwise a positive errno. */ |
064af421 | 1474 | int |
b5827b24 | 1475 | ofproto_port_del(struct ofproto *ofproto, uint16_t ofp_port) |
064af421 | 1476 | { |
abe529af | 1477 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1264ec95 | 1478 | const char *name = ofport ? netdev_get_name(ofport->netdev) : "<unknown>"; |
e1b1d06a | 1479 | struct simap_node *ofp_request_node; |
3cf10406 | 1480 | int error; |
cdee00fd | 1481 | |
e1b1d06a JP |
1482 | ofp_request_node = simap_find(&ofproto->ofp_requests, name); |
1483 | if (ofp_request_node) { | |
1484 | simap_delete(&ofproto->ofp_requests, ofp_request_node); | |
1485 | } | |
1486 | ||
abe529af | 1487 | error = ofproto->ofproto_class->port_del(ofproto, ofp_port); |
892815f5 | 1488 | if (!error && ofport) { |
1264ec95 BP |
1489 | /* 'name' is the netdev's name and update_port() is going to close the |
1490 | * netdev. Just in case update_port() refers to 'name' after it | |
3a6ccc8c BP |
1491 | * destroys 'ofport', make a copy of it around the update_port() |
1492 | * call. */ | |
1493 | char *devname = xstrdup(name); | |
1494 | update_port(ofproto, devname); | |
1495 | free(devname); | |
3cf10406 BP |
1496 | } |
1497 | return error; | |
064af421 BP |
1498 | } |
1499 | ||
6c1491fb | 1500 | /* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and |
fa8b054f BP |
1501 | * performs the 'n_actions' actions in 'actions'. The new flow will not |
1502 | * timeout. | |
1503 | * | |
1504 | * If cls_rule->priority is in the range of priorities supported by OpenFlow | |
1505 | * (0...65535, inclusive) then the flow will be visible to OpenFlow | |
1506 | * controllers; otherwise, it will be hidden. | |
1507 | * | |
f25d0cf3 | 1508 | * The caller retains ownership of 'cls_rule' and 'ofpacts'. |
6c1491fb BP |
1509 | * |
1510 | * This is a helper function for in-band control and fail-open. */ | |
064af421 | 1511 | void |
81a76618 BP |
1512 | ofproto_add_flow(struct ofproto *ofproto, const struct match *match, |
1513 | unsigned int priority, | |
f25d0cf3 | 1514 | const struct ofpact *ofpacts, size_t ofpacts_len) |
064af421 | 1515 | { |
7ee20df1 BP |
1516 | const struct rule *rule; |
1517 | ||
81a76618 BP |
1518 | rule = rule_from_cls_rule(classifier_find_match_exactly( |
1519 | &ofproto->tables[0].cls, match, priority)); | |
f25d0cf3 BP |
1520 | if (!rule || !ofpacts_equal(rule->ofpacts, rule->ofpacts_len, |
1521 | ofpacts, ofpacts_len)) { | |
a9a2da38 | 1522 | struct ofputil_flow_mod fm; |
7ee20df1 BP |
1523 | |
1524 | memset(&fm, 0, sizeof fm); | |
81a76618 BP |
1525 | fm.match = *match; |
1526 | fm.priority = priority; | |
7ee20df1 | 1527 | fm.buffer_id = UINT32_MAX; |
f25d0cf3 BP |
1528 | fm.ofpacts = xmemdup(ofpacts, ofpacts_len); |
1529 | fm.ofpacts_len = ofpacts_len; | |
7ee20df1 | 1530 | add_flow(ofproto, NULL, &fm, NULL); |
f25d0cf3 | 1531 | free(fm.ofpacts); |
7ee20df1 | 1532 | } |
064af421 BP |
1533 | } |
1534 | ||
75a75043 | 1535 | /* Executes the flow modification specified in 'fm'. Returns 0 on success, an |
90bf1e07 BP |
1536 | * OFPERR_* OpenFlow error code on failure, or OFPROTO_POSTPONE if the |
1537 | * operation cannot be initiated now but may be retried later. | |
75a75043 BP |
1538 | * |
1539 | * This is a helper function for in-band control and fail-open. */ | |
1540 | int | |
1541 | ofproto_flow_mod(struct ofproto *ofproto, const struct ofputil_flow_mod *fm) | |
1542 | { | |
1543 | return handle_flow_mod__(ofproto, NULL, fm, NULL); | |
1544 | } | |
1545 | ||
6c1491fb BP |
1546 | /* Searches for a rule with matching criteria exactly equal to 'target' in |
1547 | * ofproto's table 0 and, if it finds one, deletes it. | |
1548 | * | |
1549 | * This is a helper function for in-band control and fail-open. */ | |
7ee20df1 | 1550 | bool |
81a76618 BP |
1551 | ofproto_delete_flow(struct ofproto *ofproto, |
1552 | const struct match *target, unsigned int priority) | |
064af421 BP |
1553 | { |
1554 | struct rule *rule; | |
1555 | ||
81a76618 BP |
1556 | rule = rule_from_cls_rule(classifier_find_match_exactly( |
1557 | &ofproto->tables[0].cls, target, priority)); | |
7ee20df1 BP |
1558 | if (!rule) { |
1559 | /* No such rule -> success. */ | |
1560 | return true; | |
1561 | } else if (rule->pending) { | |
1562 | /* An operation on the rule is already pending -> failure. | |
1563 | * Caller must retry later if it's important. */ | |
1564 | return false; | |
1565 | } else { | |
1566 | /* Initiate deletion -> success. */ | |
7024dffe | 1567 | struct ofopgroup *group = ofopgroup_create_unattached(ofproto); |
2b07c8b1 | 1568 | ofoperation_create(group, rule, OFOPERATION_DELETE, OFPRR_DELETE); |
d0918789 | 1569 | oftable_remove_rule(rule); |
254750ce | 1570 | ofproto->ofproto_class->rule_destruct(rule); |
7ee20df1 BP |
1571 | ofopgroup_submit(group); |
1572 | return true; | |
bcf84111 | 1573 | } |
5ecc9d81 | 1574 | |
142e1f5c BP |
1575 | } |
1576 | ||
7ee20df1 BP |
1577 | /* Starts the process of deleting all of the flows from all of ofproto's flow |
1578 | * tables and then reintroducing the flows required by in-band control and | |
1579 | * fail-open. The process will complete in a later call to ofproto_run(). */ | |
142e1f5c BP |
1580 | void |
1581 | ofproto_flush_flows(struct ofproto *ofproto) | |
1582 | { | |
7ee20df1 BP |
1583 | COVERAGE_INC(ofproto_flush); |
1584 | ofproto->state = S_FLUSH; | |
064af421 BP |
1585 | } |
1586 | \f | |
1587 | static void | |
1588 | reinit_ports(struct ofproto *p) | |
1589 | { | |
abe529af | 1590 | struct ofproto_port_dump dump; |
b3c01ed3 | 1591 | struct sset devnames; |
064af421 | 1592 | struct ofport *ofport; |
abe529af | 1593 | struct ofproto_port ofproto_port; |
b3c01ed3 | 1594 | const char *devname; |
064af421 | 1595 | |
898bf89d JP |
1596 | COVERAGE_INC(ofproto_reinit_ports); |
1597 | ||
b3c01ed3 | 1598 | sset_init(&devnames); |
4e8e4213 | 1599 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { |
1264ec95 | 1600 | sset_add(&devnames, netdev_get_name(ofport->netdev)); |
064af421 | 1601 | } |
abe529af BP |
1602 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { |
1603 | sset_add(&devnames, ofproto_port.name); | |
064af421 | 1604 | } |
064af421 | 1605 | |
b3c01ed3 BP |
1606 | SSET_FOR_EACH (devname, &devnames) { |
1607 | update_port(p, devname); | |
064af421 | 1608 | } |
b3c01ed3 | 1609 | sset_destroy(&devnames); |
064af421 BP |
1610 | } |
1611 | ||
e1b1d06a JP |
1612 | static uint16_t |
1613 | alloc_ofp_port(struct ofproto *ofproto, const char *netdev_name) | |
1614 | { | |
1615 | uint16_t ofp_port; | |
6033d9d9 | 1616 | uint16_t end_port_no = ofproto->alloc_port_no; |
e1b1d06a JP |
1617 | |
1618 | ofp_port = simap_get(&ofproto->ofp_requests, netdev_name); | |
1619 | ofp_port = ofp_port ? ofp_port : OFPP_NONE; | |
1620 | ||
1621 | if (ofp_port >= ofproto->max_ports | |
1622 | || bitmap_is_set(ofproto->ofp_port_ids, ofp_port)) { | |
e1b1d06a JP |
1623 | /* Search for a free OpenFlow port number. We try not to |
1624 | * immediately reuse them to prevent problems due to old | |
1625 | * flows. */ | |
6033d9d9 KK |
1626 | for (;;) { |
1627 | if (++ofproto->alloc_port_no >= ofproto->max_ports) { | |
1628 | ofproto->alloc_port_no = 0; | |
1629 | } | |
1630 | if (!bitmap_is_set(ofproto->ofp_port_ids, | |
1631 | ofproto->alloc_port_no)) { | |
1632 | ofp_port = ofproto->alloc_port_no; | |
1633 | break; | |
e1b1d06a | 1634 | } |
6033d9d9 KK |
1635 | if (ofproto->alloc_port_no == end_port_no) { |
1636 | return OFPP_NONE; | |
e1b1d06a JP |
1637 | } |
1638 | } | |
1639 | } | |
e1b1d06a JP |
1640 | bitmap_set1(ofproto->ofp_port_ids, ofp_port); |
1641 | return ofp_port; | |
1642 | } | |
1643 | ||
1644 | static void | |
1645 | dealloc_ofp_port(const struct ofproto *ofproto, uint16_t ofp_port) | |
1646 | { | |
1647 | bitmap_set0(ofproto->ofp_port_ids, ofp_port); | |
1648 | } | |
1649 | ||
fbfa2911 BP |
1650 | /* Opens and returns a netdev for 'ofproto_port' in 'ofproto', or a null |
1651 | * pointer if the netdev cannot be opened. On success, also fills in | |
1652 | * 'opp'. */ | |
b33951b8 | 1653 | static struct netdev * |
e1b1d06a JP |
1654 | ofport_open(struct ofproto *ofproto, |
1655 | struct ofproto_port *ofproto_port, | |
9e1fd49b | 1656 | struct ofputil_phy_port *pp) |
064af421 BP |
1657 | { |
1658 | enum netdev_flags flags; | |
064af421 | 1659 | struct netdev *netdev; |
064af421 BP |
1660 | int error; |
1661 | ||
18812dff | 1662 | error = netdev_open(ofproto_port->name, ofproto_port->type, &netdev); |
064af421 | 1663 | if (error) { |
fbfa2911 | 1664 | VLOG_WARN_RL(&rl, "%s: ignoring port %s (%"PRIu16") because netdev %s " |
064af421 | 1665 | "cannot be opened (%s)", |
fbfa2911 | 1666 | ofproto->name, |
abe529af BP |
1667 | ofproto_port->name, ofproto_port->ofp_port, |
1668 | ofproto_port->name, strerror(error)); | |
064af421 BP |
1669 | return NULL; |
1670 | } | |
1671 | ||
e1b1d06a JP |
1672 | if (ofproto_port->ofp_port == OFPP_NONE) { |
1673 | if (!strcmp(ofproto->name, ofproto_port->name)) { | |
1674 | ofproto_port->ofp_port = OFPP_LOCAL; | |
1675 | } else { | |
1676 | ofproto_port->ofp_port = alloc_ofp_port(ofproto, | |
1677 | ofproto_port->name); | |
1678 | } | |
1679 | } | |
9e1fd49b BP |
1680 | pp->port_no = ofproto_port->ofp_port; |
1681 | netdev_get_etheraddr(netdev, pp->hw_addr); | |
1682 | ovs_strlcpy(pp->name, ofproto_port->name, sizeof pp->name); | |
064af421 | 1683 | netdev_get_flags(netdev, &flags); |
9e1fd49b BP |
1684 | pp->config = flags & NETDEV_UP ? 0 : OFPUTIL_PC_PORT_DOWN; |
1685 | pp->state = netdev_get_carrier(netdev) ? 0 : OFPUTIL_PS_LINK_DOWN; | |
1686 | netdev_get_features(netdev, &pp->curr, &pp->advertised, | |
1687 | &pp->supported, &pp->peer); | |
d02a5f8e BP |
1688 | pp->curr_speed = netdev_features_to_bps(pp->curr, 0); |
1689 | pp->max_speed = netdev_features_to_bps(pp->supported, 0); | |
118c4676 | 1690 | |
b33951b8 | 1691 | return netdev; |
064af421 BP |
1692 | } |
1693 | ||
b33951b8 | 1694 | /* Returns true if most fields of 'a' and 'b' are equal. Differences in name, |
9e1fd49b | 1695 | * port number, and 'config' bits other than OFPUTIL_PS_LINK_DOWN are |
b33951b8 BP |
1696 | * disregarded. */ |
1697 | static bool | |
9e1fd49b BP |
1698 | ofport_equal(const struct ofputil_phy_port *a, |
1699 | const struct ofputil_phy_port *b) | |
064af421 | 1700 | { |
9e1fd49b | 1701 | return (eth_addr_equals(a->hw_addr, b->hw_addr) |
064af421 | 1702 | && a->state == b->state |
9e1fd49b | 1703 | && !((a->config ^ b->config) & OFPUTIL_PC_PORT_DOWN) |
064af421 BP |
1704 | && a->curr == b->curr |
1705 | && a->advertised == b->advertised | |
1706 | && a->supported == b->supported | |
9e1fd49b BP |
1707 | && a->peer == b->peer |
1708 | && a->curr_speed == b->curr_speed | |
1709 | && a->max_speed == b->max_speed); | |
064af421 BP |
1710 | } |
1711 | ||
b33951b8 BP |
1712 | /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'. |
1713 | * The caller must ensure that 'p' does not have a conflicting ofport (that is, | |
1714 | * one with the same name or port number). */ | |
064af421 | 1715 | static void |
b33951b8 | 1716 | ofport_install(struct ofproto *p, |
9e1fd49b | 1717 | struct netdev *netdev, const struct ofputil_phy_port *pp) |
064af421 | 1718 | { |
b33951b8 BP |
1719 | const char *netdev_name = netdev_get_name(netdev); |
1720 | struct ofport *ofport; | |
abe529af | 1721 | int error; |
72b06300 | 1722 | |
b33951b8 | 1723 | /* Create ofport. */ |
abe529af BP |
1724 | ofport = p->ofproto_class->port_alloc(); |
1725 | if (!ofport) { | |
1726 | error = ENOMEM; | |
1727 | goto error; | |
1728 | } | |
0f7d71a5 | 1729 | ofport->ofproto = p; |
b33951b8 | 1730 | ofport->netdev = netdev; |
031d8bff | 1731 | ofport->change_seq = netdev_change_seq(netdev); |
9e1fd49b BP |
1732 | ofport->pp = *pp; |
1733 | ofport->ofp_port = pp->port_no; | |
b33951b8 BP |
1734 | |
1735 | /* Add port to 'p'. */ | |
abe529af | 1736 | hmap_insert(&p->ports, &ofport->hmap_node, hash_int(ofport->ofp_port, 0)); |
72b06300 | 1737 | shash_add(&p->port_by_name, netdev_name, ofport); |
abe529af | 1738 | |
ada3428f | 1739 | update_mtu(p, ofport); |
9197df76 | 1740 | |
abe529af BP |
1741 | /* Let the ofproto_class initialize its private data. */ |
1742 | error = p->ofproto_class->port_construct(ofport); | |
1743 | if (error) { | |
1744 | goto error; | |
1745 | } | |
9e1fd49b | 1746 | connmgr_send_port_status(p->connmgr, pp, OFPPR_ADD); |
abe529af BP |
1747 | return; |
1748 | ||
1749 | error: | |
1750 | VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)", | |
1751 | p->name, netdev_name, strerror(error)); | |
1752 | if (ofport) { | |
1753 | ofport_destroy__(ofport); | |
1754 | } else { | |
1755 | netdev_close(netdev); | |
72b06300 | 1756 | } |
064af421 BP |
1757 | } |
1758 | ||
b33951b8 | 1759 | /* Removes 'ofport' from 'p' and destroys it. */ |
064af421 | 1760 | static void |
0f7d71a5 | 1761 | ofport_remove(struct ofport *ofport) |
064af421 | 1762 | { |
9e1fd49b | 1763 | connmgr_send_port_status(ofport->ofproto->connmgr, &ofport->pp, |
fa066f01 | 1764 | OFPPR_DELETE); |
abe529af | 1765 | ofport_destroy(ofport); |
b33951b8 BP |
1766 | } |
1767 | ||
1768 | /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and | |
1769 | * destroys it. */ | |
1770 | static void | |
1771 | ofport_remove_with_name(struct ofproto *ofproto, const char *name) | |
1772 | { | |
1773 | struct ofport *port = shash_find_data(&ofproto->port_by_name, name); | |
1774 | if (port) { | |
0f7d71a5 | 1775 | ofport_remove(port); |
b33951b8 BP |
1776 | } |
1777 | } | |
1778 | ||
9e1fd49b | 1779 | /* Updates 'port' with new 'pp' description. |
b33951b8 BP |
1780 | * |
1781 | * Does not handle a name or port number change. The caller must implement | |
1782 | * such a change as a delete followed by an add. */ | |
1783 | static void | |
9e1fd49b | 1784 | ofport_modified(struct ofport *port, struct ofputil_phy_port *pp) |
b33951b8 | 1785 | { |
9e1fd49b BP |
1786 | memcpy(port->pp.hw_addr, pp->hw_addr, ETH_ADDR_LEN); |
1787 | port->pp.config = ((port->pp.config & ~OFPUTIL_PC_PORT_DOWN) | |
1788 | | (pp->config & OFPUTIL_PC_PORT_DOWN)); | |
1789 | port->pp.state = pp->state; | |
1790 | port->pp.curr = pp->curr; | |
1791 | port->pp.advertised = pp->advertised; | |
1792 | port->pp.supported = pp->supported; | |
1793 | port->pp.peer = pp->peer; | |
1794 | port->pp.curr_speed = pp->curr_speed; | |
1795 | port->pp.max_speed = pp->max_speed; | |
b33951b8 | 1796 | |
9e1fd49b | 1797 | connmgr_send_port_status(port->ofproto->connmgr, &port->pp, OFPPR_MODIFY); |
064af421 BP |
1798 | } |
1799 | ||
5a2dfd47 JP |
1800 | /* Update OpenFlow 'state' in 'port' and notify controller. */ |
1801 | void | |
9e1fd49b | 1802 | ofproto_port_set_state(struct ofport *port, enum ofputil_port_state state) |
5a2dfd47 | 1803 | { |
9e1fd49b BP |
1804 | if (port->pp.state != state) { |
1805 | port->pp.state = state; | |
1806 | connmgr_send_port_status(port->ofproto->connmgr, &port->pp, | |
5a2dfd47 JP |
1807 | OFPPR_MODIFY); |
1808 | } | |
1809 | } | |
1810 | ||
abe529af BP |
1811 | void |
1812 | ofproto_port_unregister(struct ofproto *ofproto, uint16_t ofp_port) | |
e7934396 | 1813 | { |
abe529af BP |
1814 | struct ofport *port = ofproto_get_port(ofproto, ofp_port); |
1815 | if (port) { | |
52a90c29 BP |
1816 | if (port->ofproto->ofproto_class->set_realdev) { |
1817 | port->ofproto->ofproto_class->set_realdev(port, 0, 0); | |
1818 | } | |
b308140a JP |
1819 | if (port->ofproto->ofproto_class->set_stp_port) { |
1820 | port->ofproto->ofproto_class->set_stp_port(port, NULL); | |
1821 | } | |
abe529af | 1822 | if (port->ofproto->ofproto_class->set_cfm) { |
a5610457 | 1823 | port->ofproto->ofproto_class->set_cfm(port, NULL); |
abe529af BP |
1824 | } |
1825 | if (port->ofproto->ofproto_class->bundle_remove) { | |
1826 | port->ofproto->ofproto_class->bundle_remove(port); | |
e7934396 BP |
1827 | } |
1828 | } | |
1829 | } | |
1830 | ||
1831 | static void | |
abe529af | 1832 | ofport_destroy__(struct ofport *port) |
e7934396 | 1833 | { |
abe529af BP |
1834 | struct ofproto *ofproto = port->ofproto; |
1835 | const char *name = netdev_get_name(port->netdev); | |
fa066f01 | 1836 | |
abe529af BP |
1837 | hmap_remove(&ofproto->ports, &port->hmap_node); |
1838 | shash_delete(&ofproto->port_by_name, | |
1839 | shash_find(&ofproto->port_by_name, name)); | |
fa066f01 | 1840 | |
abe529af BP |
1841 | netdev_close(port->netdev); |
1842 | ofproto->ofproto_class->port_dealloc(port); | |
e7934396 BP |
1843 | } |
1844 | ||
064af421 | 1845 | static void |
abe529af | 1846 | ofport_destroy(struct ofport *port) |
064af421 | 1847 | { |
fa066f01 | 1848 | if (port) { |
e1b1d06a | 1849 | dealloc_ofp_port(port->ofproto, port->ofp_port); |
abe529af BP |
1850 | port->ofproto->ofproto_class->port_destruct(port); |
1851 | ofport_destroy__(port); | |
1852 | } | |
064af421 BP |
1853 | } |
1854 | ||
abe529af BP |
1855 | struct ofport * |
1856 | ofproto_get_port(const struct ofproto *ofproto, uint16_t ofp_port) | |
ca0f572c BP |
1857 | { |
1858 | struct ofport *port; | |
1859 | ||
4e8e4213 | 1860 | HMAP_FOR_EACH_IN_BUCKET (port, hmap_node, |
abe529af BP |
1861 | hash_int(ofp_port, 0), &ofproto->ports) { |
1862 | if (port->ofp_port == ofp_port) { | |
ca0f572c BP |
1863 | return port; |
1864 | } | |
1865 | } | |
1866 | return NULL; | |
1867 | } | |
1868 | ||
6527c598 PS |
1869 | int |
1870 | ofproto_port_get_stats(const struct ofport *port, struct netdev_stats *stats) | |
1871 | { | |
1872 | struct ofproto *ofproto = port->ofproto; | |
1873 | int error; | |
1874 | ||
1875 | if (ofproto->ofproto_class->port_get_stats) { | |
1876 | error = ofproto->ofproto_class->port_get_stats(port, stats); | |
1877 | } else { | |
1878 | error = EOPNOTSUPP; | |
1879 | } | |
1880 | ||
1881 | return error; | |
1882 | } | |
1883 | ||
064af421 | 1884 | static void |
b33951b8 | 1885 | update_port(struct ofproto *ofproto, const char *name) |
064af421 | 1886 | { |
abe529af | 1887 | struct ofproto_port ofproto_port; |
9e1fd49b | 1888 | struct ofputil_phy_port pp; |
b33951b8 BP |
1889 | struct netdev *netdev; |
1890 | struct ofport *port; | |
064af421 BP |
1891 | |
1892 | COVERAGE_INC(ofproto_update_port); | |
c874dc6d | 1893 | |
b33951b8 | 1894 | /* Fetch 'name''s location and properties from the datapath. */ |
abe529af | 1895 | netdev = (!ofproto_port_query_by_name(ofproto, name, &ofproto_port) |
fbfa2911 | 1896 | ? ofport_open(ofproto, &ofproto_port, &pp) |
b33951b8 BP |
1897 | : NULL); |
1898 | if (netdev) { | |
abe529af | 1899 | port = ofproto_get_port(ofproto, ofproto_port.ofp_port); |
b33951b8 | 1900 | if (port && !strcmp(netdev_get_name(port->netdev), name)) { |
e65942a0 BP |
1901 | struct netdev *old_netdev = port->netdev; |
1902 | ||
b33951b8 | 1903 | /* 'name' hasn't changed location. Any properties changed? */ |
9e1fd49b BP |
1904 | if (!ofport_equal(&port->pp, &pp)) { |
1905 | ofport_modified(port, &pp); | |
abe529af BP |
1906 | } |
1907 | ||
ada3428f | 1908 | update_mtu(ofproto, port); |
9197df76 | 1909 | |
e65942a0 BP |
1910 | /* Install the newly opened netdev in case it has changed. |
1911 | * Don't close the old netdev yet in case port_modified has to | |
1912 | * remove a retained reference to it.*/ | |
abe529af | 1913 | port->netdev = netdev; |
031d8bff | 1914 | port->change_seq = netdev_change_seq(netdev); |
abe529af BP |
1915 | |
1916 | if (port->ofproto->ofproto_class->port_modified) { | |
1917 | port->ofproto->ofproto_class->port_modified(port); | |
b33951b8 | 1918 | } |
e65942a0 BP |
1919 | |
1920 | netdev_close(old_netdev); | |
b33951b8 BP |
1921 | } else { |
1922 | /* If 'port' is nonnull then its name differs from 'name' and thus | |
1923 | * we should delete it. If we think there's a port named 'name' | |
1924 | * then its port number must be wrong now so delete it too. */ | |
1925 | if (port) { | |
0f7d71a5 | 1926 | ofport_remove(port); |
b33951b8 BP |
1927 | } |
1928 | ofport_remove_with_name(ofproto, name); | |
9e1fd49b | 1929 | ofport_install(ofproto, netdev, &pp); |
c874dc6d | 1930 | } |
b33951b8 BP |
1931 | } else { |
1932 | /* Any port named 'name' is gone now. */ | |
1933 | ofport_remove_with_name(ofproto, name); | |
c874dc6d | 1934 | } |
abe529af | 1935 | ofproto_port_destroy(&ofproto_port); |
064af421 BP |
1936 | } |
1937 | ||
1938 | static int | |
1939 | init_ports(struct ofproto *p) | |
1940 | { | |
abe529af BP |
1941 | struct ofproto_port_dump dump; |
1942 | struct ofproto_port ofproto_port; | |
e1b1d06a | 1943 | struct shash_node *node, *next; |
abe529af BP |
1944 | |
1945 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { | |
e1b1d06a JP |
1946 | const char *name = ofproto_port.name; |
1947 | ||
1948 | if (shash_find(&p->port_by_name, name)) { | |
fbfa2911 | 1949 | VLOG_WARN_RL(&rl, "%s: ignoring duplicate device %s in datapath", |
e1b1d06a | 1950 | p->name, name); |
abe529af | 1951 | } else { |
9e1fd49b | 1952 | struct ofputil_phy_port pp; |
b33951b8 BP |
1953 | struct netdev *netdev; |
1954 | ||
e1b1d06a JP |
1955 | /* Check if an OpenFlow port number had been requested. */ |
1956 | node = shash_find(&init_ofp_ports, name); | |
1957 | if (node) { | |
1958 | const struct iface_hint *iface_hint = node->data; | |
1959 | simap_put(&p->ofp_requests, name, iface_hint->ofp_port); | |
1960 | } | |
1961 | ||
fbfa2911 | 1962 | netdev = ofport_open(p, &ofproto_port, &pp); |
b33951b8 | 1963 | if (netdev) { |
9e1fd49b | 1964 | ofport_install(p, netdev, &pp); |
064af421 BP |
1965 | } |
1966 | } | |
1967 | } | |
b0ec0f27 | 1968 | |
e1b1d06a | 1969 | SHASH_FOR_EACH_SAFE(node, next, &init_ofp_ports) { |
4f9e08a5 | 1970 | struct iface_hint *iface_hint = node->data; |
e1b1d06a JP |
1971 | |
1972 | if (!strcmp(iface_hint->br_name, p->name)) { | |
1973 | free(iface_hint->br_name); | |
1974 | free(iface_hint->br_type); | |
4f9e08a5 | 1975 | free(iface_hint); |
e1b1d06a JP |
1976 | shash_delete(&init_ofp_ports, node); |
1977 | } | |
1978 | } | |
1979 | ||
064af421 BP |
1980 | return 0; |
1981 | } | |
9197df76 JP |
1982 | |
1983 | /* Find the minimum MTU of all non-datapath devices attached to 'p'. | |
1984 | * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */ | |
1985 | static int | |
1986 | find_min_mtu(struct ofproto *p) | |
1987 | { | |
1988 | struct ofport *ofport; | |
1989 | int mtu = 0; | |
1990 | ||
1991 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
1992 | struct netdev *netdev = ofport->netdev; | |
1993 | int dev_mtu; | |
1994 | ||
1995 | /* Skip any internal ports, since that's what we're trying to | |
1996 | * set. */ | |
1997 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
1998 | continue; | |
1999 | } | |
2000 | ||
2001 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2002 | continue; | |
2003 | } | |
2004 | if (!mtu || dev_mtu < mtu) { | |
2005 | mtu = dev_mtu; | |
2006 | } | |
2007 | } | |
2008 | ||
2009 | return mtu ? mtu: ETH_PAYLOAD_MAX; | |
2010 | } | |
2011 | ||
ada3428f PS |
2012 | /* Update MTU of all datapath devices on 'p' to the minimum of the |
2013 | * non-datapath ports in event of 'port' added or changed. */ | |
9197df76 | 2014 | static void |
ada3428f | 2015 | update_mtu(struct ofproto *p, struct ofport *port) |
9197df76 JP |
2016 | { |
2017 | struct ofport *ofport; | |
ada3428f PS |
2018 | struct netdev *netdev = port->netdev; |
2019 | int dev_mtu, old_min; | |
2020 | ||
2021 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2022 | port->mtu = 0; | |
2023 | return; | |
2024 | } | |
2025 | if (!strcmp(netdev_get_type(port->netdev), "internal")) { | |
2026 | if (dev_mtu > p->min_mtu) { | |
2027 | if (!netdev_set_mtu(port->netdev, p->min_mtu)) { | |
2028 | dev_mtu = p->min_mtu; | |
2029 | } | |
2030 | } | |
2031 | port->mtu = dev_mtu; | |
2032 | return; | |
2033 | } | |
2034 | ||
2035 | /* For non-internal port find new min mtu. */ | |
2036 | old_min = p->min_mtu; | |
2037 | port->mtu = dev_mtu; | |
2038 | p->min_mtu = find_min_mtu(p); | |
2039 | if (p->min_mtu == old_min) { | |
2040 | return; | |
2041 | } | |
9197df76 JP |
2042 | |
2043 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2044 | struct netdev *netdev = ofport->netdev; | |
2045 | ||
2046 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
ada3428f PS |
2047 | if (!netdev_set_mtu(netdev, p->min_mtu)) { |
2048 | ofport->mtu = p->min_mtu; | |
2049 | } | |
9197df76 JP |
2050 | } |
2051 | } | |
2052 | } | |
064af421 | 2053 | \f |
064af421 | 2054 | static void |
abe529af | 2055 | ofproto_rule_destroy__(struct rule *rule) |
064af421 | 2056 | { |
1eae3d33 | 2057 | if (rule) { |
48d28ac1 | 2058 | cls_rule_destroy(&rule->cr); |
f25d0cf3 | 2059 | free(rule->ofpacts); |
1eae3d33 BP |
2060 | rule->ofproto->ofproto_class->rule_dealloc(rule); |
2061 | } | |
064af421 BP |
2062 | } |
2063 | ||
7ee20df1 BP |
2064 | /* This function allows an ofproto implementation to destroy any rules that |
2065 | * remain when its ->destruct() function is called. The caller must have | |
2066 | * already uninitialized any derived members of 'rule' (step 5 described in the | |
5bee6e26 JP |
2067 | * large comment in ofproto/ofproto-provider.h titled "Life Cycle"). |
2068 | * This function implements steps 6 and 7. | |
7ee20df1 BP |
2069 | * |
2070 | * This function should only be called from an ofproto implementation's | |
2071 | * ->destruct() function. It is not suitable elsewhere. */ | |
abe529af BP |
2072 | void |
2073 | ofproto_rule_destroy(struct rule *rule) | |
064af421 | 2074 | { |
cb22974d | 2075 | ovs_assert(!rule->pending); |
d0918789 | 2076 | oftable_remove_rule(rule); |
7ee20df1 | 2077 | ofproto_rule_destroy__(rule); |
064af421 BP |
2078 | } |
2079 | ||
bcf84111 | 2080 | /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action |
f25d0cf3 | 2081 | * that outputs to 'port' (output to OFPP_FLOOD and OFPP_ALL doesn't count). */ |
2b07c8b1 BP |
2082 | bool |
2083 | ofproto_rule_has_out_port(const struct rule *rule, uint16_t port) | |
064af421 | 2084 | { |
7f05e7ab | 2085 | return (port == OFPP_ANY |
f25d0cf3 | 2086 | || ofpacts_output_to_port(rule->ofpacts, rule->ofpacts_len, port)); |
064af421 BP |
2087 | } |
2088 | ||
2b07c8b1 BP |
2089 | /* Returns true if a rule related to 'op' has an OpenFlow OFPAT_OUTPUT or |
2090 | * OFPAT_ENQUEUE action that outputs to 'out_port'. */ | |
2091 | bool | |
2092 | ofoperation_has_out_port(const struct ofoperation *op, uint16_t out_port) | |
2093 | { | |
2094 | if (ofproto_rule_has_out_port(op->rule, out_port)) { | |
2095 | return true; | |
2096 | } | |
2097 | ||
2098 | switch (op->type) { | |
2099 | case OFOPERATION_ADD: | |
2100 | return op->victim && ofproto_rule_has_out_port(op->victim, out_port); | |
2101 | ||
2102 | case OFOPERATION_DELETE: | |
2103 | return false; | |
2104 | ||
2105 | case OFOPERATION_MODIFY: | |
2106 | return ofpacts_output_to_port(op->ofpacts, op->ofpacts_len, out_port); | |
2107 | } | |
2108 | ||
2109 | NOT_REACHED(); | |
2110 | } | |
2111 | ||
bcf84111 | 2112 | /* Executes the actions indicated by 'rule' on 'packet' and credits 'rule''s |
bcf84111 | 2113 | * statistics appropriately. 'packet' must have at least sizeof(struct |
31a9e63f | 2114 | * ofp10_packet_in) bytes of headroom. |
064af421 | 2115 | * |
bcf84111 BP |
2116 | * 'packet' doesn't necessarily have to match 'rule'. 'rule' will be credited |
2117 | * with statistics for 'packet' either way. | |
2118 | * | |
2119 | * Takes ownership of 'packet'. */ | |
5bf0e941 | 2120 | static int |
abe529af | 2121 | rule_execute(struct rule *rule, uint16_t in_port, struct ofpbuf *packet) |
eedc0097 | 2122 | { |
bcf84111 | 2123 | struct flow flow; |
eedc0097 | 2124 | |
cb22974d | 2125 | ovs_assert(ofpbuf_headroom(packet) >= sizeof(struct ofp10_packet_in)); |
eedc0097 | 2126 | |
72e8bf28 | 2127 | flow_extract(packet, 0, 0, NULL, in_port, &flow); |
5bf0e941 | 2128 | return rule->ofproto->ofproto_class->rule_execute(rule, &flow, packet); |
350a665f BP |
2129 | } |
2130 | ||
abe529af BP |
2131 | /* Returns true if 'rule' should be hidden from the controller. |
2132 | * | |
2133 | * Rules with priority higher than UINT16_MAX are set up by ofproto itself | |
2134 | * (e.g. by in-band control) and are intentionally hidden from the | |
2135 | * controller. */ | |
2b07c8b1 BP |
2136 | bool |
2137 | ofproto_rule_is_hidden(const struct rule *rule) | |
b6c9e612 | 2138 | { |
abe529af | 2139 | return rule->cr.priority > UINT16_MAX; |
7b064a79 | 2140 | } |
5c67e4af BP |
2141 | |
2142 | static enum oftable_flags | |
2143 | rule_get_flags(const struct rule *rule) | |
2144 | { | |
2145 | return rule->ofproto->tables[rule->table_id].flags; | |
2146 | } | |
2147 | ||
2148 | static bool | |
2149 | rule_is_modifiable(const struct rule *rule) | |
2150 | { | |
2151 | return !(rule_get_flags(rule) & OFTABLE_READONLY); | |
2152 | } | |
fa066f01 | 2153 | \f |
90bf1e07 | 2154 | static enum ofperr |
d1e2cf21 | 2155 | handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2156 | { |
b0421aa2 | 2157 | ofconn_send_reply(ofconn, make_echo_reply(oh)); |
064af421 | 2158 | return 0; |
064af421 BP |
2159 | } |
2160 | ||
90bf1e07 | 2161 | static enum ofperr |
d1e2cf21 | 2162 | handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2163 | { |
64ff1d96 | 2164 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
9e1fd49b | 2165 | struct ofputil_switch_features features; |
064af421 | 2166 | struct ofport *port; |
6c1491fb | 2167 | bool arp_match_ip; |
9e1fd49b | 2168 | struct ofpbuf *b; |
c2f0373a BP |
2169 | int n_tables; |
2170 | int i; | |
064af421 | 2171 | |
9e1fd49b BP |
2172 | ofproto->ofproto_class->get_features(ofproto, &arp_match_ip, |
2173 | &features.actions); | |
cb22974d | 2174 | ovs_assert(features.actions & OFPUTIL_A_OUTPUT); /* sanity check */ |
064af421 | 2175 | |
c2f0373a BP |
2176 | /* Count only non-hidden tables in the number of tables. (Hidden tables, |
2177 | * if present, are always at the end.) */ | |
2178 | n_tables = ofproto->n_tables; | |
2179 | for (i = 0; i < ofproto->n_tables; i++) { | |
2180 | if (ofproto->tables[i].flags & OFTABLE_HIDDEN) { | |
2181 | n_tables = i; | |
2182 | break; | |
2183 | } | |
2184 | } | |
2185 | ||
9e1fd49b BP |
2186 | features.datapath_id = ofproto->datapath_id; |
2187 | features.n_buffers = pktbuf_capacity(); | |
c2f0373a | 2188 | features.n_tables = n_tables; |
9e1fd49b BP |
2189 | features.capabilities = (OFPUTIL_C_FLOW_STATS | OFPUTIL_C_TABLE_STATS | |
2190 | OFPUTIL_C_PORT_STATS | OFPUTIL_C_QUEUE_STATS); | |
6c1491fb | 2191 | if (arp_match_ip) { |
9e1fd49b | 2192 | features.capabilities |= OFPUTIL_C_ARP_MATCH_IP; |
6c1491fb | 2193 | } |
2e1ae200 JR |
2194 | /* FIXME: Fill in proper features.auxiliary_id for auxiliary connections */ |
2195 | features.auxiliary_id = 0; | |
9e1fd49b BP |
2196 | b = ofputil_encode_switch_features(&features, ofconn_get_protocol(ofconn), |
2197 | oh->xid); | |
64ff1d96 | 2198 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
9e1fd49b | 2199 | ofputil_put_switch_features_port(&port->pp, b); |
064af421 | 2200 | } |
064af421 | 2201 | |
9e1fd49b | 2202 | ofconn_send_reply(ofconn, b); |
064af421 BP |
2203 | return 0; |
2204 | } | |
064af421 | 2205 | |
90bf1e07 | 2206 | static enum ofperr |
d1e2cf21 | 2207 | handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2208 | { |
64ff1d96 | 2209 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 | 2210 | struct ofp_switch_config *osc; |
f0fd1a17 | 2211 | enum ofp_config_flags flags; |
7257b535 | 2212 | struct ofpbuf *buf; |
959a2ecd | 2213 | |
064af421 | 2214 | /* Send reply. */ |
982697a4 BP |
2215 | buf = ofpraw_alloc_reply(OFPRAW_OFPT_GET_CONFIG_REPLY, oh, 0); |
2216 | osc = ofpbuf_put_uninit(buf, sizeof *osc); | |
f0fd1a17 | 2217 | flags = ofproto->frag_handling; |
2e1ae200 JR |
2218 | /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */ |
2219 | if (oh->version < OFP13_VERSION | |
2220 | && ofconn_get_invalid_ttl_to_controller(ofconn)) { | |
f0fd1a17 PS |
2221 | flags |= OFPC_INVALID_TTL_TO_CONTROLLER; |
2222 | } | |
2223 | osc->flags = htons(flags); | |
810605a2 | 2224 | osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn)); |
b0421aa2 | 2225 | ofconn_send_reply(ofconn, buf); |
2d70a31a | 2226 | |
064af421 BP |
2227 | return 0; |
2228 | } | |
064af421 | 2229 | |
90bf1e07 | 2230 | static enum ofperr |
982697a4 | 2231 | handle_set_config(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2232 | { |
982697a4 | 2233 | const struct ofp_switch_config *osc = ofpmsg_body(oh); |
64ff1d96 | 2234 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
d1e2cf21 | 2235 | uint16_t flags = ntohs(osc->flags); |
2d70a31a | 2236 | |
7257b535 BP |
2237 | if (ofconn_get_type(ofconn) != OFCONN_PRIMARY |
2238 | || ofconn_get_role(ofconn) != NX_ROLE_SLAVE) { | |
2239 | enum ofp_config_flags cur = ofproto->frag_handling; | |
2240 | enum ofp_config_flags next = flags & OFPC_FRAG_MASK; | |
2241 | ||
cb22974d | 2242 | ovs_assert((cur & OFPC_FRAG_MASK) == cur); |
7257b535 BP |
2243 | if (cur != next) { |
2244 | if (ofproto->ofproto_class->set_frag_handling(ofproto, next)) { | |
2245 | ofproto->frag_handling = next; | |
2246 | } else { | |
2247 | VLOG_WARN_RL(&rl, "%s: unsupported fragment handling mode %s", | |
2248 | ofproto->name, | |
2249 | ofputil_frag_handling_to_string(next)); | |
2250 | } | |
064af421 BP |
2251 | } |
2252 | } | |
2e1ae200 | 2253 | /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */ |
f0fd1a17 | 2254 | ofconn_set_invalid_ttl_to_controller(ofconn, |
2e1ae200 JR |
2255 | (oh->version < OFP13_VERSION |
2256 | && flags & OFPC_INVALID_TTL_TO_CONTROLLER)); | |
ebe482fd | 2257 | |
810605a2 | 2258 | ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len)); |
0ad9b732 | 2259 | |
064af421 | 2260 | return 0; |
064af421 BP |
2261 | } |
2262 | ||
9deba63b | 2263 | /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow |
90bf1e07 BP |
2264 | * error message code for the caller to propagate upward. Otherwise, returns |
2265 | * 0. | |
2266 | * | |
2267 | * The log message mentions 'msg_type'. */ | |
2268 | static enum ofperr | |
2269 | reject_slave_controller(struct ofconn *ofconn) | |
9deba63b | 2270 | { |
1ce0a5fa BP |
2271 | if (ofconn_get_type(ofconn) == OFCONN_PRIMARY |
2272 | && ofconn_get_role(ofconn) == NX_ROLE_SLAVE) { | |
90bf1e07 | 2273 | return OFPERR_OFPBRC_EPERM; |
9deba63b BP |
2274 | } else { |
2275 | return 0; | |
2276 | } | |
2277 | } | |
2278 | ||
90bf1e07 | 2279 | static enum ofperr |
982697a4 | 2280 | handle_packet_out(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2281 | { |
64ff1d96 | 2282 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
c6a93eb7 BP |
2283 | struct ofputil_packet_out po; |
2284 | struct ofpbuf *payload; | |
f25d0cf3 BP |
2285 | uint64_t ofpacts_stub[1024 / 8]; |
2286 | struct ofpbuf ofpacts; | |
ae412e7d | 2287 | struct flow flow; |
90bf1e07 | 2288 | enum ofperr error; |
064af421 | 2289 | |
ac51afaf BP |
2290 | COVERAGE_INC(ofproto_packet_out); |
2291 | ||
76589937 | 2292 | error = reject_slave_controller(ofconn); |
9deba63b | 2293 | if (error) { |
f25d0cf3 | 2294 | goto exit; |
9deba63b BP |
2295 | } |
2296 | ||
c6a93eb7 | 2297 | /* Decode message. */ |
f25d0cf3 | 2298 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
982697a4 | 2299 | error = ofputil_decode_packet_out(&po, oh, &ofpacts); |
064af421 | 2300 | if (error) { |
f25d0cf3 | 2301 | goto exit_free_ofpacts; |
064af421 | 2302 | } |
91858960 | 2303 | if (po.in_port >= p->max_ports && po.in_port < OFPP_MAX) { |
2e1bfcb6 | 2304 | error = OFPERR_OFPBRC_BAD_PORT; |
91858960 BP |
2305 | goto exit_free_ofpacts; |
2306 | } | |
064af421 | 2307 | |
5cb7a798 | 2308 | |
ac51afaf | 2309 | /* Get payload. */ |
c6a93eb7 BP |
2310 | if (po.buffer_id != UINT32_MAX) { |
2311 | error = ofconn_pktbuf_retrieve(ofconn, po.buffer_id, &payload, NULL); | |
2312 | if (error || !payload) { | |
f25d0cf3 | 2313 | goto exit_free_ofpacts; |
064af421 | 2314 | } |
064af421 | 2315 | } else { |
c6a93eb7 BP |
2316 | payload = xmalloc(sizeof *payload); |
2317 | ofpbuf_use_const(payload, po.packet, po.packet_len); | |
e1154f71 BP |
2318 | } |
2319 | ||
548de4dd | 2320 | /* Verify actions against packet, then send packet if successful. */ |
72e8bf28 | 2321 | flow_extract(payload, 0, 0, NULL, po.in_port, &flow); |
548de4dd BP |
2322 | error = ofpacts_check(po.ofpacts, po.ofpacts_len, &flow, p->max_ports); |
2323 | if (!error) { | |
2324 | error = p->ofproto_class->packet_out(p, payload, &flow, | |
2325 | po.ofpacts, po.ofpacts_len); | |
2326 | } | |
c6a93eb7 | 2327 | ofpbuf_delete(payload); |
abe529af | 2328 | |
f25d0cf3 BP |
2329 | exit_free_ofpacts: |
2330 | ofpbuf_uninit(&ofpacts); | |
2331 | exit: | |
abe529af | 2332 | return error; |
064af421 BP |
2333 | } |
2334 | ||
2335 | static void | |
9e1fd49b BP |
2336 | update_port_config(struct ofport *port, |
2337 | enum ofputil_port_config config, | |
2338 | enum ofputil_port_config mask) | |
064af421 | 2339 | { |
9e1fd49b BP |
2340 | enum ofputil_port_config old_config = port->pp.config; |
2341 | enum ofputil_port_config toggle; | |
abe529af | 2342 | |
9e1fd49b BP |
2343 | toggle = (config ^ port->pp.config) & mask; |
2344 | if (toggle & OFPUTIL_PC_PORT_DOWN) { | |
2345 | if (config & OFPUTIL_PC_PORT_DOWN) { | |
064af421 BP |
2346 | netdev_turn_flags_off(port->netdev, NETDEV_UP, true); |
2347 | } else { | |
2348 | netdev_turn_flags_on(port->netdev, NETDEV_UP, true); | |
2349 | } | |
9e1fd49b | 2350 | toggle &= ~OFPUTIL_PC_PORT_DOWN; |
064af421 | 2351 | } |
abe529af | 2352 | |
9e1fd49b BP |
2353 | port->pp.config ^= toggle; |
2354 | if (port->pp.config != old_config) { | |
abe529af | 2355 | port->ofproto->ofproto_class->port_reconfigured(port, old_config); |
064af421 BP |
2356 | } |
2357 | } | |
2358 | ||
90bf1e07 | 2359 | static enum ofperr |
d1e2cf21 | 2360 | handle_port_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2361 | { |
64ff1d96 | 2362 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
9e1fd49b | 2363 | struct ofputil_port_mod pm; |
064af421 | 2364 | struct ofport *port; |
9e1fd49b | 2365 | enum ofperr error; |
064af421 | 2366 | |
76589937 | 2367 | error = reject_slave_controller(ofconn); |
9deba63b BP |
2368 | if (error) { |
2369 | return error; | |
2370 | } | |
064af421 | 2371 | |
9e1fd49b BP |
2372 | error = ofputil_decode_port_mod(oh, &pm); |
2373 | if (error) { | |
2374 | return error; | |
2375 | } | |
2376 | ||
2377 | port = ofproto_get_port(p, pm.port_no); | |
064af421 | 2378 | if (!port) { |
90bf1e07 | 2379 | return OFPERR_OFPPMFC_BAD_PORT; |
9e1fd49b | 2380 | } else if (!eth_addr_equals(port->pp.hw_addr, pm.hw_addr)) { |
90bf1e07 | 2381 | return OFPERR_OFPPMFC_BAD_HW_ADDR; |
064af421 | 2382 | } else { |
9e1fd49b BP |
2383 | update_port_config(port, pm.config, pm.mask); |
2384 | if (pm.advertise) { | |
2385 | netdev_set_advertisements(port->netdev, pm.advertise); | |
064af421 BP |
2386 | } |
2387 | } | |
2388 | return 0; | |
2389 | } | |
2390 | ||
90bf1e07 | 2391 | static enum ofperr |
3269c562 | 2392 | handle_desc_stats_request(struct ofconn *ofconn, |
982697a4 | 2393 | const struct ofp_header *request) |
064af421 | 2394 | { |
061bfea4 BP |
2395 | static const char *default_mfr_desc = "Nicira, Inc."; |
2396 | static const char *default_hw_desc = "Open vSwitch"; | |
2397 | static const char *default_sw_desc = VERSION; | |
2398 | static const char *default_serial_desc = "None"; | |
2399 | static const char *default_dp_desc = "None"; | |
2400 | ||
64ff1d96 | 2401 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 BP |
2402 | struct ofp_desc_stats *ods; |
2403 | struct ofpbuf *msg; | |
2404 | ||
982697a4 BP |
2405 | msg = ofpraw_alloc_stats_reply(request, 0); |
2406 | ods = ofpbuf_put_zeros(msg, sizeof *ods); | |
061bfea4 BP |
2407 | ovs_strlcpy(ods->mfr_desc, p->mfr_desc ? p->mfr_desc : default_mfr_desc, |
2408 | sizeof ods->mfr_desc); | |
2409 | ovs_strlcpy(ods->hw_desc, p->hw_desc ? p->hw_desc : default_hw_desc, | |
2410 | sizeof ods->hw_desc); | |
2411 | ovs_strlcpy(ods->sw_desc, p->sw_desc ? p->sw_desc : default_sw_desc, | |
2412 | sizeof ods->sw_desc); | |
2413 | ovs_strlcpy(ods->serial_num, | |
2414 | p->serial_desc ? p->serial_desc : default_serial_desc, | |
2415 | sizeof ods->serial_num); | |
2416 | ovs_strlcpy(ods->dp_desc, p->dp_desc ? p->dp_desc : default_dp_desc, | |
2417 | sizeof ods->dp_desc); | |
b0421aa2 | 2418 | ofconn_send_reply(ofconn, msg); |
064af421 BP |
2419 | |
2420 | return 0; | |
2421 | } | |
2422 | ||
90bf1e07 | 2423 | static enum ofperr |
3269c562 | 2424 | handle_table_stats_request(struct ofconn *ofconn, |
982697a4 | 2425 | const struct ofp_header *request) |
064af421 | 2426 | { |
64ff1d96 | 2427 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
307975da | 2428 | struct ofp12_table_stats *ots; |
064af421 | 2429 | struct ofpbuf *msg; |
c2f0373a | 2430 | int n_tables; |
6c1491fb | 2431 | size_t i; |
064af421 | 2432 | |
307975da SH |
2433 | /* Set up default values. |
2434 | * | |
2435 | * ofp12_table_stats is used as a generic structure as | |
2436 | * it is able to hold all the fields for ofp10_table_stats | |
2437 | * and ofp11_table_stats (and of course itself). | |
2438 | */ | |
2439 | ots = xcalloc(p->n_tables, sizeof *ots); | |
6c1491fb BP |
2440 | for (i = 0; i < p->n_tables; i++) { |
2441 | ots[i].table_id = i; | |
35aa7a21 | 2442 | sprintf(ots[i].name, "table%zu", i); |
307975da SH |
2443 | ots[i].match = htonll(OFPXMT12_MASK); |
2444 | ots[i].wildcards = htonll(OFPXMT12_MASK); | |
e78b61f6 BP |
2445 | ots[i].write_actions = htonl(OFPAT11_OUTPUT); |
2446 | ots[i].apply_actions = htonl(OFPAT11_OUTPUT); | |
307975da SH |
2447 | ots[i].write_setfields = htonll(OFPXMT12_MASK); |
2448 | ots[i].apply_setfields = htonll(OFPXMT12_MASK); | |
2449 | ots[i].metadata_match = htonll(UINT64_MAX); | |
2450 | ots[i].metadata_write = htonll(UINT64_MAX); | |
2451 | ots[i].instructions = htonl(OFPIT11_ALL); | |
2452 | ots[i].config = htonl(OFPTC11_TABLE_MISS_MASK); | |
6c1491fb | 2453 | ots[i].max_entries = htonl(1000000); /* An arbitrary big number. */ |
d0918789 | 2454 | ots[i].active_count = htonl(classifier_count(&p->tables[i].cls)); |
6c1491fb | 2455 | } |
064af421 | 2456 | |
6c1491fb | 2457 | p->ofproto_class->get_tables(p, ots); |
064af421 | 2458 | |
c2f0373a BP |
2459 | /* Post-process the tables, dropping hidden tables. */ |
2460 | n_tables = p->n_tables; | |
254750ce BP |
2461 | for (i = 0; i < p->n_tables; i++) { |
2462 | const struct oftable *table = &p->tables[i]; | |
2463 | ||
c2f0373a BP |
2464 | if (table->flags & OFTABLE_HIDDEN) { |
2465 | n_tables = i; | |
2466 | break; | |
2467 | } | |
2468 | ||
254750ce BP |
2469 | if (table->name) { |
2470 | ovs_strzcpy(ots[i].name, table->name, sizeof ots[i].name); | |
2471 | } | |
2472 | ||
2473 | if (table->max_flows < ntohl(ots[i].max_entries)) { | |
2474 | ots[i].max_entries = htonl(table->max_flows); | |
2475 | } | |
2476 | } | |
2477 | ||
c2f0373a | 2478 | msg = ofputil_encode_table_stats_reply(ots, n_tables, request); |
b0421aa2 | 2479 | ofconn_send_reply(ofconn, msg); |
307975da SH |
2480 | |
2481 | free(ots); | |
2482 | ||
064af421 BP |
2483 | return 0; |
2484 | } | |
2485 | ||
abaad8cf | 2486 | static void |
63f2140a | 2487 | append_port_stat(struct ofport *port, struct list *replies) |
abaad8cf | 2488 | { |
f8e4867e | 2489 | struct ofputil_port_stats ops = { .port_no = port->pp.port_no }; |
abaad8cf | 2490 | |
d295e8e9 JP |
2491 | /* Intentionally ignore return value, since errors will set |
2492 | * 'stats' to all-1s, which is correct for OpenFlow, and | |
abaad8cf | 2493 | * netdev_get_stats() will log errors. */ |
f8e4867e SH |
2494 | ofproto_port_get_stats(port, &ops.stats); |
2495 | ||
2496 | ofputil_append_port_stat(replies, &ops); | |
abaad8cf JP |
2497 | } |
2498 | ||
90bf1e07 | 2499 | static enum ofperr |
63f2140a | 2500 | handle_port_stats_request(struct ofconn *ofconn, |
982697a4 | 2501 | const struct ofp_header *request) |
064af421 | 2502 | { |
64ff1d96 | 2503 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 | 2504 | struct ofport *port; |
63f2140a | 2505 | struct list replies; |
f8e4867e SH |
2506 | uint16_t port_no; |
2507 | enum ofperr error; | |
2508 | ||
2509 | error = ofputil_decode_port_stats_request(request, &port_no); | |
2510 | if (error) { | |
2511 | return error; | |
2512 | } | |
064af421 | 2513 | |
982697a4 | 2514 | ofpmp_init(&replies, request); |
7f05e7ab | 2515 | if (port_no != OFPP_ANY) { |
f8e4867e | 2516 | port = ofproto_get_port(p, port_no); |
abaad8cf | 2517 | if (port) { |
63f2140a | 2518 | append_port_stat(port, &replies); |
abaad8cf JP |
2519 | } |
2520 | } else { | |
4e8e4213 | 2521 | HMAP_FOR_EACH (port, hmap_node, &p->ports) { |
63f2140a | 2522 | append_port_stat(port, &replies); |
abaad8cf | 2523 | } |
064af421 BP |
2524 | } |
2525 | ||
63f2140a | 2526 | ofconn_send_replies(ofconn, &replies); |
064af421 BP |
2527 | return 0; |
2528 | } | |
2529 | ||
2be393ed JP |
2530 | static enum ofperr |
2531 | handle_port_desc_stats_request(struct ofconn *ofconn, | |
982697a4 | 2532 | const struct ofp_header *request) |
2be393ed JP |
2533 | { |
2534 | struct ofproto *p = ofconn_get_ofproto(ofconn); | |
2e3fa633 | 2535 | enum ofp_version version; |
2be393ed JP |
2536 | struct ofport *port; |
2537 | struct list replies; | |
2538 | ||
982697a4 | 2539 | ofpmp_init(&replies, request); |
2be393ed | 2540 | |
2e3fa633 | 2541 | version = ofputil_protocol_to_ofp_version(ofconn_get_protocol(ofconn)); |
2be393ed | 2542 | HMAP_FOR_EACH (port, hmap_node, &p->ports) { |
2e3fa633 | 2543 | ofputil_append_port_desc_stats_reply(version, &port->pp, &replies); |
2be393ed JP |
2544 | } |
2545 | ||
2546 | ofconn_send_replies(ofconn, &replies); | |
2547 | return 0; | |
2548 | } | |
2549 | ||
c6ebb8fb | 2550 | static void |
f27f2134 BP |
2551 | calc_flow_duration__(long long int start, long long int now, |
2552 | uint32_t *sec, uint32_t *nsec) | |
c6ebb8fb | 2553 | { |
f27f2134 | 2554 | long long int msecs = now - start; |
588cd7b5 BP |
2555 | *sec = msecs / 1000; |
2556 | *nsec = (msecs % 1000) * (1000 * 1000); | |
2557 | } | |
2558 | ||
48266274 BP |
2559 | /* Checks whether 'table_id' is 0xff or a valid table ID in 'ofproto'. Returns |
2560 | * 0 if 'table_id' is OK, otherwise an OpenFlow error code. */ | |
90bf1e07 | 2561 | static enum ofperr |
48266274 BP |
2562 | check_table_id(const struct ofproto *ofproto, uint8_t table_id) |
2563 | { | |
2564 | return (table_id == 0xff || table_id < ofproto->n_tables | |
2565 | ? 0 | |
c22c56bd | 2566 | : OFPERR_OFPBRC_BAD_TABLE_ID); |
48266274 BP |
2567 | |
2568 | } | |
2569 | ||
5c67e4af | 2570 | static struct oftable * |
d4ce8a49 | 2571 | next_visible_table(const struct ofproto *ofproto, uint8_t table_id) |
5c67e4af BP |
2572 | { |
2573 | struct oftable *table; | |
2574 | ||
2575 | for (table = &ofproto->tables[table_id]; | |
2576 | table < &ofproto->tables[ofproto->n_tables]; | |
2577 | table++) { | |
2578 | if (!(table->flags & OFTABLE_HIDDEN)) { | |
2579 | return table; | |
2580 | } | |
2581 | } | |
2582 | ||
2583 | return NULL; | |
2584 | } | |
2585 | ||
d0918789 | 2586 | static struct oftable * |
d4ce8a49 | 2587 | first_matching_table(const struct ofproto *ofproto, uint8_t table_id) |
064af421 | 2588 | { |
6c1491fb | 2589 | if (table_id == 0xff) { |
5c67e4af | 2590 | return next_visible_table(ofproto, 0); |
6c1491fb BP |
2591 | } else if (table_id < ofproto->n_tables) { |
2592 | return &ofproto->tables[table_id]; | |
a02e5331 | 2593 | } else { |
6c1491fb | 2594 | return NULL; |
a02e5331 | 2595 | } |
064af421 BP |
2596 | } |
2597 | ||
d0918789 | 2598 | static struct oftable * |
d4ce8a49 BP |
2599 | next_matching_table(const struct ofproto *ofproto, |
2600 | const struct oftable *table, uint8_t table_id) | |
6c1491fb | 2601 | { |
5c67e4af BP |
2602 | return (table_id == 0xff |
2603 | ? next_visible_table(ofproto, (table - ofproto->tables) + 1) | |
6c1491fb BP |
2604 | : NULL); |
2605 | } | |
2606 | ||
d0918789 | 2607 | /* Assigns TABLE to each oftable, in turn, that matches TABLE_ID in OFPROTO: |
6c1491fb BP |
2608 | * |
2609 | * - If TABLE_ID is 0xff, this iterates over every classifier table in | |
5c67e4af | 2610 | * OFPROTO, skipping tables marked OFTABLE_HIDDEN. |
6c1491fb BP |
2611 | * |
2612 | * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates | |
5c67e4af BP |
2613 | * only once, for that table. (This can be used to access tables marked |
2614 | * OFTABLE_HIDDEN.) | |
6c1491fb | 2615 | * |
48266274 BP |
2616 | * - Otherwise, TABLE_ID isn't valid for OFPROTO, so the loop won't be |
2617 | * entered at all. (Perhaps you should have validated TABLE_ID with | |
2618 | * check_table_id().) | |
6c1491fb BP |
2619 | * |
2620 | * All parameters are evaluated multiple times. | |
2621 | */ | |
d0918789 BP |
2622 | #define FOR_EACH_MATCHING_TABLE(TABLE, TABLE_ID, OFPROTO) \ |
2623 | for ((TABLE) = first_matching_table(OFPROTO, TABLE_ID); \ | |
2624 | (TABLE) != NULL; \ | |
2625 | (TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID)) | |
6c1491fb | 2626 | |
9ed18e46 BP |
2627 | /* Searches 'ofproto' for rules in table 'table_id' (or in all tables, if |
2628 | * 'table_id' is 0xff) that match 'match' in the "loose" way required for | |
2629 | * OpenFlow OFPFC_MODIFY and OFPFC_DELETE requests and puts them on list | |
2630 | * 'rules'. | |
2631 | * | |
7f05e7ab | 2632 | * If 'out_port' is anything other than OFPP_ANY, then only rules that output |
9ed18e46 BP |
2633 | * to 'out_port' are included. |
2634 | * | |
2635 | * Hidden rules are always omitted. | |
2636 | * | |
2637 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 2638 | static enum ofperr |
9ed18e46 | 2639 | collect_rules_loose(struct ofproto *ofproto, uint8_t table_id, |
81a76618 | 2640 | const struct match *match, |
e729e793 JP |
2641 | ovs_be64 cookie, ovs_be64 cookie_mask, |
2642 | uint16_t out_port, struct list *rules) | |
9ed18e46 | 2643 | { |
d0918789 | 2644 | struct oftable *table; |
81a76618 | 2645 | struct cls_rule cr; |
90bf1e07 | 2646 | enum ofperr error; |
48266274 BP |
2647 | |
2648 | error = check_table_id(ofproto, table_id); | |
2649 | if (error) { | |
2650 | return error; | |
2651 | } | |
9ed18e46 BP |
2652 | |
2653 | list_init(rules); | |
81a76618 | 2654 | cls_rule_init(&cr, match, 0); |
d0918789 | 2655 | FOR_EACH_MATCHING_TABLE (table, table_id, ofproto) { |
9ed18e46 BP |
2656 | struct cls_cursor cursor; |
2657 | struct rule *rule; | |
2658 | ||
81a76618 | 2659 | cls_cursor_init(&cursor, &table->cls, &cr); |
9ed18e46 | 2660 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
7ee20df1 | 2661 | if (rule->pending) { |
48d28ac1 BP |
2662 | error = OFPROTO_POSTPONE; |
2663 | goto exit; | |
7ee20df1 | 2664 | } |
2b07c8b1 BP |
2665 | if (!ofproto_rule_is_hidden(rule) |
2666 | && ofproto_rule_has_out_port(rule, out_port) | |
e729e793 | 2667 | && !((rule->flow_cookie ^ cookie) & cookie_mask)) { |
9ed18e46 BP |
2668 | list_push_back(rules, &rule->ofproto_node); |
2669 | } | |
2670 | } | |
2671 | } | |
48d28ac1 BP |
2672 | |
2673 | exit: | |
2674 | cls_rule_destroy(&cr); | |
2675 | return error; | |
9ed18e46 BP |
2676 | } |
2677 | ||
2678 | /* Searches 'ofproto' for rules in table 'table_id' (or in all tables, if | |
2679 | * 'table_id' is 0xff) that match 'match' in the "strict" way required for | |
2680 | * OpenFlow OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests and puts them | |
2681 | * on list 'rules'. | |
2682 | * | |
7f05e7ab | 2683 | * If 'out_port' is anything other than OFPP_ANY, then only rules that output |
9ed18e46 BP |
2684 | * to 'out_port' are included. |
2685 | * | |
2686 | * Hidden rules are always omitted. | |
2687 | * | |
2688 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 2689 | static enum ofperr |
9ed18e46 | 2690 | collect_rules_strict(struct ofproto *ofproto, uint8_t table_id, |
81a76618 | 2691 | const struct match *match, unsigned int priority, |
e729e793 JP |
2692 | ovs_be64 cookie, ovs_be64 cookie_mask, |
2693 | uint16_t out_port, struct list *rules) | |
9ed18e46 | 2694 | { |
d0918789 | 2695 | struct oftable *table; |
81a76618 | 2696 | struct cls_rule cr; |
48266274 BP |
2697 | int error; |
2698 | ||
2699 | error = check_table_id(ofproto, table_id); | |
2700 | if (error) { | |
2701 | return error; | |
2702 | } | |
9ed18e46 BP |
2703 | |
2704 | list_init(rules); | |
81a76618 | 2705 | cls_rule_init(&cr, match, priority); |
d0918789 | 2706 | FOR_EACH_MATCHING_TABLE (table, table_id, ofproto) { |
9ed18e46 BP |
2707 | struct rule *rule; |
2708 | ||
d0918789 | 2709 | rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls, |
81a76618 | 2710 | &cr)); |
9ed18e46 | 2711 | if (rule) { |
7ee20df1 | 2712 | if (rule->pending) { |
48d28ac1 BP |
2713 | error = OFPROTO_POSTPONE; |
2714 | goto exit; | |
7ee20df1 | 2715 | } |
2b07c8b1 BP |
2716 | if (!ofproto_rule_is_hidden(rule) |
2717 | && ofproto_rule_has_out_port(rule, out_port) | |
e729e793 | 2718 | && !((rule->flow_cookie ^ cookie) & cookie_mask)) { |
9ed18e46 BP |
2719 | list_push_back(rules, &rule->ofproto_node); |
2720 | } | |
2721 | } | |
2722 | } | |
48d28ac1 BP |
2723 | |
2724 | exit: | |
2725 | cls_rule_destroy(&cr); | |
9ed18e46 BP |
2726 | return 0; |
2727 | } | |
2728 | ||
f27f2134 BP |
2729 | /* Returns 'age_ms' (a duration in milliseconds), converted to seconds and |
2730 | * forced into the range of a uint16_t. */ | |
2731 | static int | |
2732 | age_secs(long long int age_ms) | |
2733 | { | |
2734 | return (age_ms < 0 ? 0 | |
2735 | : age_ms >= UINT16_MAX * 1000 ? UINT16_MAX | |
2736 | : (unsigned int) age_ms / 1000); | |
2737 | } | |
2738 | ||
90bf1e07 | 2739 | static enum ofperr |
63f2140a | 2740 | handle_flow_stats_request(struct ofconn *ofconn, |
982697a4 | 2741 | const struct ofp_header *request) |
064af421 | 2742 | { |
64ff1d96 | 2743 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 2744 | struct ofputil_flow_stats_request fsr; |
63f2140a | 2745 | struct list replies; |
9ed18e46 BP |
2746 | struct list rules; |
2747 | struct rule *rule; | |
90bf1e07 | 2748 | enum ofperr error; |
09246b99 | 2749 | |
982697a4 | 2750 | error = ofputil_decode_flow_stats_request(&fsr, request); |
09246b99 BP |
2751 | if (error) { |
2752 | return error; | |
2753 | } | |
2754 | ||
9ed18e46 | 2755 | error = collect_rules_loose(ofproto, fsr.table_id, &fsr.match, |
e729e793 | 2756 | fsr.cookie, fsr.cookie_mask, |
9ed18e46 BP |
2757 | fsr.out_port, &rules); |
2758 | if (error) { | |
2759 | return error; | |
2760 | } | |
5ecc9d81 | 2761 | |
982697a4 | 2762 | ofpmp_init(&replies, request); |
9ed18e46 | 2763 | LIST_FOR_EACH (rule, ofproto_node, &rules) { |
f27f2134 | 2764 | long long int now = time_msec(); |
9ed18e46 BP |
2765 | struct ofputil_flow_stats fs; |
2766 | ||
5cb7a798 | 2767 | minimatch_expand(&rule->cr.match, &fs.match); |
81a76618 | 2768 | fs.priority = rule->cr.priority; |
9ed18e46 BP |
2769 | fs.cookie = rule->flow_cookie; |
2770 | fs.table_id = rule->table_id; | |
f27f2134 | 2771 | calc_flow_duration__(rule->created, now, &fs.duration_sec, |
9ed18e46 BP |
2772 | &fs.duration_nsec); |
2773 | fs.idle_timeout = rule->idle_timeout; | |
2774 | fs.hard_timeout = rule->hard_timeout; | |
f27f2134 BP |
2775 | fs.idle_age = age_secs(now - rule->used); |
2776 | fs.hard_age = age_secs(now - rule->modified); | |
9ed18e46 BP |
2777 | ofproto->ofproto_class->rule_get_stats(rule, &fs.packet_count, |
2778 | &fs.byte_count); | |
f25d0cf3 BP |
2779 | fs.ofpacts = rule->ofpacts; |
2780 | fs.ofpacts_len = rule->ofpacts_len; | |
2e1ae200 JR |
2781 | fs.flags = 0; |
2782 | if (rule->send_flow_removed) { | |
2783 | fs.flags |= OFPFF_SEND_FLOW_REM; | |
2784 | /* FIXME: Implement OF 1.3 flags OFPFF13_NO_PKT_COUNTS | |
2785 | and OFPFF13_NO_BYT_COUNTS */ | |
2786 | } | |
9ed18e46 | 2787 | ofputil_append_flow_stats_reply(&fs, &replies); |
3c4486a5 | 2788 | } |
63f2140a | 2789 | ofconn_send_replies(ofconn, &replies); |
5ecc9d81 | 2790 | |
09246b99 BP |
2791 | return 0; |
2792 | } | |
2793 | ||
4f2cad2c | 2794 | static void |
3394b5b6 | 2795 | flow_stats_ds(struct rule *rule, struct ds *results) |
4f2cad2c | 2796 | { |
4f2cad2c | 2797 | uint64_t packet_count, byte_count; |
4f2cad2c | 2798 | |
abe529af BP |
2799 | rule->ofproto->ofproto_class->rule_get_stats(rule, |
2800 | &packet_count, &byte_count); | |
4f2cad2c | 2801 | |
6c1491fb BP |
2802 | if (rule->table_id != 0) { |
2803 | ds_put_format(results, "table_id=%"PRIu8", ", rule->table_id); | |
2804 | } | |
4f2cad2c JP |
2805 | ds_put_format(results, "duration=%llds, ", |
2806 | (time_msec() - rule->created) / 1000); | |
52ae00b3 | 2807 | ds_put_format(results, "priority=%u, ", rule->cr.priority); |
4f2cad2c JP |
2808 | ds_put_format(results, "n_packets=%"PRIu64", ", packet_count); |
2809 | ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count); | |
cb833cf6 | 2810 | cls_rule_format(&rule->cr, results); |
a5df0e72 | 2811 | ds_put_char(results, ','); |
f25d0cf3 BP |
2812 | if (rule->ofpacts_len > 0) { |
2813 | ofpacts_format(rule->ofpacts, rule->ofpacts_len, results); | |
3c8552c1 JP |
2814 | } else { |
2815 | ds_put_cstr(results, "drop"); | |
3dffcf07 | 2816 | } |
4f2cad2c JP |
2817 | ds_put_cstr(results, "\n"); |
2818 | } | |
2819 | ||
d295e8e9 | 2820 | /* Adds a pretty-printed description of all flows to 'results', including |
ee8b231c | 2821 | * hidden flows (e.g., set up by in-band control). */ |
4f2cad2c JP |
2822 | void |
2823 | ofproto_get_all_flows(struct ofproto *p, struct ds *results) | |
2824 | { | |
d0918789 | 2825 | struct oftable *table; |
6c1491fb | 2826 | |
d0918789 | 2827 | OFPROTO_FOR_EACH_TABLE (table, p) { |
6c1491fb BP |
2828 | struct cls_cursor cursor; |
2829 | struct rule *rule; | |
064af421 | 2830 | |
d0918789 | 2831 | cls_cursor_init(&cursor, &table->cls, NULL); |
6c1491fb BP |
2832 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
2833 | flow_stats_ds(rule, results); | |
2834 | } | |
064af421 | 2835 | } |
064af421 BP |
2836 | } |
2837 | ||
b5827b24 BP |
2838 | /* Obtains the NetFlow engine type and engine ID for 'ofproto' into |
2839 | * '*engine_type' and '*engine_id', respectively. */ | |
2840 | void | |
2841 | ofproto_get_netflow_ids(const struct ofproto *ofproto, | |
2842 | uint8_t *engine_type, uint8_t *engine_id) | |
2843 | { | |
abe529af | 2844 | ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id); |
b5827b24 BP |
2845 | } |
2846 | ||
b9380396 EJ |
2847 | /* Checks the fault status of CFM for 'ofp_port' within 'ofproto'. Returns a |
2848 | * bitmask of 'cfm_fault_reason's to indicate a CFM fault (generally | |
2849 | * indicating a connectivity problem). Returns zero if CFM is not faulted, | |
1c0333b6 | 2850 | * and -1 if CFM is not enabled on 'ofp_port'. */ |
a5610457 EJ |
2851 | int |
2852 | ofproto_port_get_cfm_fault(const struct ofproto *ofproto, uint16_t ofp_port) | |
2853 | { | |
2854 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
2855 | return (ofport && ofproto->ofproto_class->get_cfm_fault | |
2856 | ? ofproto->ofproto_class->get_cfm_fault(ofport) | |
2857 | : -1); | |
2858 | } | |
2859 | ||
1c0333b6 EJ |
2860 | /* Checks the operational status reported by the remote CFM endpoint of |
2861 | * 'ofp_port' Returns 1 if operationally up, 0 if operationally down, and -1 | |
2862 | * if CFM is not enabled on 'ofp_port' or does not support operational status. | |
2863 | */ | |
2864 | int | |
2865 | ofproto_port_get_cfm_opup(const struct ofproto *ofproto, uint16_t ofp_port) | |
2866 | { | |
2867 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
2868 | return (ofport && ofproto->ofproto_class->get_cfm_opup | |
2869 | ? ofproto->ofproto_class->get_cfm_opup(ofport) | |
2870 | : -1); | |
2871 | } | |
2872 | ||
1de11730 EJ |
2873 | /* Gets the MPIDs of the remote maintenance points broadcasting to 'ofp_port' |
2874 | * within 'ofproto'. Populates 'rmps' with an array of MPIDs owned by | |
2875 | * 'ofproto', and 'n_rmps' with the number of MPIDs in 'rmps'. Returns a | |
2876 | * number less than 0 if CFM is not enabled on 'ofp_port'. */ | |
2877 | int | |
2878 | ofproto_port_get_cfm_remote_mpids(const struct ofproto *ofproto, | |
2879 | uint16_t ofp_port, const uint64_t **rmps, | |
2880 | size_t *n_rmps) | |
2881 | { | |
2882 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
2883 | ||
2884 | *rmps = NULL; | |
2885 | *n_rmps = 0; | |
2886 | return (ofport && ofproto->ofproto_class->get_cfm_remote_mpids | |
2887 | ? ofproto->ofproto_class->get_cfm_remote_mpids(ofport, rmps, | |
2888 | n_rmps) | |
2889 | : -1); | |
2890 | } | |
2891 | ||
3967a833 MM |
2892 | /* Checks the health of the CFM for 'ofp_port' within 'ofproto'. Returns an |
2893 | * integer value between 0 and 100 to indicate the health of the port as a | |
2894 | * percentage which is the average of cfm health of all the remote_mpids or | |
2895 | * returns -1 if CFM is not enabled on 'ofport'. */ | |
2896 | int | |
2897 | ofproto_port_get_cfm_health(const struct ofproto *ofproto, uint16_t ofp_port) | |
2898 | { | |
2899 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
2900 | return (ofport && ofproto->ofproto_class->get_cfm_health | |
2901 | ? ofproto->ofproto_class->get_cfm_health(ofport) | |
2902 | : -1); | |
2903 | } | |
2904 | ||
90bf1e07 | 2905 | static enum ofperr |
76c93b22 | 2906 | handle_aggregate_stats_request(struct ofconn *ofconn, |
982697a4 | 2907 | const struct ofp_header *oh) |
27d34fce | 2908 | { |
76c93b22 | 2909 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 2910 | struct ofputil_flow_stats_request request; |
76c93b22 | 2911 | struct ofputil_aggregate_stats stats; |
5e9d0469 | 2912 | bool unknown_packets, unknown_bytes; |
76c93b22 | 2913 | struct ofpbuf *reply; |
9ed18e46 BP |
2914 | struct list rules; |
2915 | struct rule *rule; | |
90bf1e07 | 2916 | enum ofperr error; |
27d34fce | 2917 | |
982697a4 | 2918 | error = ofputil_decode_flow_stats_request(&request, oh); |
76c93b22 BP |
2919 | if (error) { |
2920 | return error; | |
2921 | } | |
5ecc9d81 | 2922 | |
9ed18e46 | 2923 | error = collect_rules_loose(ofproto, request.table_id, &request.match, |
e729e793 | 2924 | request.cookie, request.cookie_mask, |
9ed18e46 BP |
2925 | request.out_port, &rules); |
2926 | if (error) { | |
2927 | return error; | |
2928 | } | |
3c4486a5 | 2929 | |
9ed18e46 | 2930 | memset(&stats, 0, sizeof stats); |
5e9d0469 | 2931 | unknown_packets = unknown_bytes = false; |
9ed18e46 BP |
2932 | LIST_FOR_EACH (rule, ofproto_node, &rules) { |
2933 | uint64_t packet_count; | |
2934 | uint64_t byte_count; | |
5ecc9d81 | 2935 | |
9ed18e46 BP |
2936 | ofproto->ofproto_class->rule_get_stats(rule, &packet_count, |
2937 | &byte_count); | |
5ecc9d81 | 2938 | |
5e9d0469 BP |
2939 | if (packet_count == UINT64_MAX) { |
2940 | unknown_packets = true; | |
2941 | } else { | |
2942 | stats.packet_count += packet_count; | |
2943 | } | |
2944 | ||
2945 | if (byte_count == UINT64_MAX) { | |
2946 | unknown_bytes = true; | |
2947 | } else { | |
2948 | stats.byte_count += byte_count; | |
2949 | } | |
2950 | ||
9ed18e46 | 2951 | stats.flow_count++; |
3c4486a5 | 2952 | } |
5e9d0469 BP |
2953 | if (unknown_packets) { |
2954 | stats.packet_count = UINT64_MAX; | |
2955 | } | |
2956 | if (unknown_bytes) { | |
2957 | stats.byte_count = UINT64_MAX; | |
2958 | } | |
27d34fce | 2959 | |
982697a4 | 2960 | reply = ofputil_encode_aggregate_stats_reply(&stats, oh); |
76c93b22 | 2961 | ofconn_send_reply(ofconn, reply); |
09246b99 BP |
2962 | |
2963 | return 0; | |
2964 | } | |
2965 | ||
c1c9c9c4 | 2966 | struct queue_stats_cbdata { |
ca0f572c | 2967 | struct ofport *ofport; |
63f2140a | 2968 | struct list replies; |
c1c9c9c4 BP |
2969 | }; |
2970 | ||
2971 | static void | |
db9220c3 | 2972 | put_queue_stats(struct queue_stats_cbdata *cbdata, uint32_t queue_id, |
c1c9c9c4 BP |
2973 | const struct netdev_queue_stats *stats) |
2974 | { | |
c1c9c9c4 | 2975 | |
64626975 SH |
2976 | struct ofputil_queue_stats oqs = { |
2977 | .port_no = cbdata->ofport->pp.port_no, | |
2978 | .queue_id = queue_id, | |
2979 | .stats = *stats, | |
2980 | }; | |
2981 | ofputil_append_queue_stat(&cbdata->replies, &oqs); | |
c1c9c9c4 BP |
2982 | } |
2983 | ||
2984 | static void | |
db9220c3 | 2985 | handle_queue_stats_dump_cb(uint32_t queue_id, |
c1c9c9c4 BP |
2986 | struct netdev_queue_stats *stats, |
2987 | void *cbdata_) | |
2988 | { | |
2989 | struct queue_stats_cbdata *cbdata = cbdata_; | |
2990 | ||
2991 | put_queue_stats(cbdata, queue_id, stats); | |
2992 | } | |
2993 | ||
0414d158 | 2994 | static enum ofperr |
ca0f572c | 2995 | handle_queue_stats_for_port(struct ofport *port, uint32_t queue_id, |
c1c9c9c4 BP |
2996 | struct queue_stats_cbdata *cbdata) |
2997 | { | |
ca0f572c | 2998 | cbdata->ofport = port; |
c1c9c9c4 BP |
2999 | if (queue_id == OFPQ_ALL) { |
3000 | netdev_dump_queue_stats(port->netdev, | |
3001 | handle_queue_stats_dump_cb, cbdata); | |
3002 | } else { | |
3003 | struct netdev_queue_stats stats; | |
3004 | ||
1ac788f6 BP |
3005 | if (!netdev_get_queue_stats(port->netdev, queue_id, &stats)) { |
3006 | put_queue_stats(cbdata, queue_id, &stats); | |
0414d158 BP |
3007 | } else { |
3008 | return OFPERR_OFPQOFC_BAD_QUEUE; | |
1ac788f6 | 3009 | } |
c1c9c9c4 | 3010 | } |
0414d158 | 3011 | return 0; |
c1c9c9c4 BP |
3012 | } |
3013 | ||
90bf1e07 | 3014 | static enum ofperr |
63f2140a | 3015 | handle_queue_stats_request(struct ofconn *ofconn, |
982697a4 | 3016 | const struct ofp_header *rq) |
c1c9c9c4 | 3017 | { |
64ff1d96 | 3018 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
c1c9c9c4 | 3019 | struct queue_stats_cbdata cbdata; |
0414d158 | 3020 | struct ofport *port; |
0414d158 | 3021 | enum ofperr error; |
64626975 | 3022 | struct ofputil_queue_stats_request oqsr; |
c1c9c9c4 | 3023 | |
c1c9c9c4 BP |
3024 | COVERAGE_INC(ofproto_queue_req); |
3025 | ||
982697a4 | 3026 | ofpmp_init(&cbdata.replies, rq); |
c1c9c9c4 | 3027 | |
64626975 SH |
3028 | error = ofputil_decode_queue_stats_request(rq, &oqsr); |
3029 | if (error) { | |
3030 | return error; | |
3031 | } | |
3032 | ||
7f05e7ab | 3033 | if (oqsr.port_no == OFPP_ANY) { |
0414d158 | 3034 | error = OFPERR_OFPQOFC_BAD_QUEUE; |
4e8e4213 | 3035 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
64626975 | 3036 | if (!handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata)) { |
0414d158 BP |
3037 | error = 0; |
3038 | } | |
c1c9c9c4 | 3039 | } |
0414d158 | 3040 | } else { |
64626975 | 3041 | port = ofproto_get_port(ofproto, oqsr.port_no); |
0414d158 | 3042 | error = (port |
64626975 | 3043 | ? handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata) |
0414d158 BP |
3044 | : OFPERR_OFPQOFC_BAD_PORT); |
3045 | } | |
3046 | if (!error) { | |
3047 | ofconn_send_replies(ofconn, &cbdata.replies); | |
c1c9c9c4 | 3048 | } else { |
63f2140a | 3049 | ofpbuf_list_delete(&cbdata.replies); |
c1c9c9c4 | 3050 | } |
c1c9c9c4 | 3051 | |
0414d158 | 3052 | return error; |
c1c9c9c4 | 3053 | } |
7ee20df1 BP |
3054 | |
3055 | static bool | |
3056 | is_flow_deletion_pending(const struct ofproto *ofproto, | |
3057 | const struct cls_rule *cls_rule, | |
3058 | uint8_t table_id) | |
3059 | { | |
3060 | if (!hmap_is_empty(&ofproto->deletions)) { | |
3061 | struct ofoperation *op; | |
3062 | ||
3063 | HMAP_FOR_EACH_WITH_HASH (op, hmap_node, | |
3064 | cls_rule_hash(cls_rule, table_id), | |
3065 | &ofproto->deletions) { | |
3066 | if (cls_rule_equal(cls_rule, &op->rule->cr)) { | |
3067 | return true; | |
3068 | } | |
3069 | } | |
3070 | } | |
3071 | ||
3072 | return false; | |
3073 | } | |
3074 | ||
79eee1eb BP |
3075 | /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT |
3076 | * in which no matching flow already exists in the flow table. | |
3077 | * | |
3078 | * Adds the flow specified by 'ofm', which is followed by 'n_actions' | |
75a75043 | 3079 | * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow |
90bf1e07 BP |
3080 | * error code on failure, or OFPROTO_POSTPONE if the operation cannot be |
3081 | * initiated now but may be retried later. | |
79eee1eb | 3082 | * |
f25d0cf3 BP |
3083 | * Upon successful return, takes ownership of 'fm->ofpacts'. On failure, |
3084 | * ownership remains with the caller. | |
3085 | * | |
79eee1eb BP |
3086 | * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id, |
3087 | * if any. */ | |
90bf1e07 | 3088 | static enum ofperr |
a9a2da38 | 3089 | add_flow(struct ofproto *ofproto, struct ofconn *ofconn, |
1b9d6420 | 3090 | const struct ofputil_flow_mod *fm, const struct ofp_header *request) |
064af421 | 3091 | { |
d0918789 | 3092 | struct oftable *table; |
7ee20df1 BP |
3093 | struct ofopgroup *group; |
3094 | struct rule *victim; | |
81a76618 | 3095 | struct cls_rule cr; |
064af421 | 3096 | struct rule *rule; |
064af421 BP |
3097 | int error; |
3098 | ||
48266274 BP |
3099 | error = check_table_id(ofproto, fm->table_id); |
3100 | if (error) { | |
3101 | return error; | |
3102 | } | |
3103 | ||
7ee20df1 BP |
3104 | /* Pick table. */ |
3105 | if (fm->table_id == 0xff) { | |
3106 | uint8_t table_id; | |
13521ff5 | 3107 | if (ofproto->ofproto_class->rule_choose_table) { |
81a76618 BP |
3108 | error = ofproto->ofproto_class->rule_choose_table(ofproto, |
3109 | &fm->match, | |
7ee20df1 BP |
3110 | &table_id); |
3111 | if (error) { | |
3112 | return error; | |
3113 | } | |
cb22974d | 3114 | ovs_assert(table_id < ofproto->n_tables); |
7ee20df1 BP |
3115 | table = &ofproto->tables[table_id]; |
3116 | } else { | |
3117 | table = &ofproto->tables[0]; | |
3118 | } | |
3119 | } else if (fm->table_id < ofproto->n_tables) { | |
3120 | table = &ofproto->tables[fm->table_id]; | |
3121 | } else { | |
c22c56bd | 3122 | return OFPERR_OFPBRC_BAD_TABLE_ID; |
064af421 BP |
3123 | } |
3124 | ||
5c67e4af BP |
3125 | if (table->flags & OFTABLE_READONLY) { |
3126 | return OFPERR_OFPBRC_EPERM; | |
3127 | } | |
3128 | ||
81a76618 BP |
3129 | /* Allocate new rule and initialize classifier rule. */ |
3130 | rule = ofproto->ofproto_class->rule_alloc(); | |
3131 | if (!rule) { | |
3132 | VLOG_WARN_RL(&rl, "%s: failed to create rule (%s)", | |
3133 | ofproto->name, strerror(error)); | |
3134 | return ENOMEM; | |
63adcc7d | 3135 | } |
81a76618 | 3136 | cls_rule_init(&rule->cr, &fm->match, fm->priority); |
63adcc7d | 3137 | |
7ee20df1 | 3138 | /* Serialize against pending deletion. */ |
81a76618 | 3139 | if (is_flow_deletion_pending(ofproto, &cr, table - ofproto->tables)) { |
48d28ac1 | 3140 | cls_rule_destroy(&rule->cr); |
81a76618 | 3141 | ofproto->ofproto_class->rule_dealloc(rule); |
7ee20df1 | 3142 | return OFPROTO_POSTPONE; |
afe75089 | 3143 | } |
064af421 | 3144 | |
81a76618 BP |
3145 | /* Check for overlap, if requested. */ |
3146 | if (fm->flags & OFPFF_CHECK_OVERLAP | |
3147 | && classifier_rule_overlaps(&table->cls, &rule->cr)) { | |
48d28ac1 | 3148 | cls_rule_destroy(&rule->cr); |
81a76618 BP |
3149 | ofproto->ofproto_class->rule_dealloc(rule); |
3150 | return OFPERR_OFPFMFC_OVERLAP; | |
7ee20df1 | 3151 | } |
81a76618 | 3152 | |
2e1ae200 JR |
3153 | /* FIXME: Implement OFPFF12_RESET_COUNTS */ |
3154 | ||
7ee20df1 | 3155 | rule->ofproto = ofproto; |
7ee20df1 | 3156 | rule->pending = NULL; |
623e1caf | 3157 | rule->flow_cookie = fm->new_cookie; |
1745cd08 | 3158 | rule->created = rule->modified = rule->used = time_msec(); |
7ee20df1 BP |
3159 | rule->idle_timeout = fm->idle_timeout; |
3160 | rule->hard_timeout = fm->hard_timeout; | |
3161 | rule->table_id = table - ofproto->tables; | |
3162 | rule->send_flow_removed = (fm->flags & OFPFF_SEND_FLOW_REM) != 0; | |
2e1ae200 JR |
3163 | /* FIXME: Implement OF 1.3 flags OFPFF13_NO_PKT_COUNTS |
3164 | and OFPFF13_NO_BYT_COUNTS */ | |
f25d0cf3 BP |
3165 | rule->ofpacts = xmemdup(fm->ofpacts, fm->ofpacts_len); |
3166 | rule->ofpacts_len = fm->ofpacts_len; | |
254750ce BP |
3167 | rule->evictable = true; |
3168 | rule->eviction_group = NULL; | |
2b07c8b1 BP |
3169 | rule->monitor_flags = 0; |
3170 | rule->add_seqno = 0; | |
3171 | rule->modify_seqno = 0; | |
7ee20df1 BP |
3172 | |
3173 | /* Insert new rule. */ | |
d0918789 | 3174 | victim = oftable_replace_rule(rule); |
5c67e4af BP |
3175 | if (victim && !rule_is_modifiable(victim)) { |
3176 | error = OFPERR_OFPBRC_EPERM; | |
3177 | } else if (victim && victim->pending) { | |
7ee20df1 BP |
3178 | error = OFPROTO_POSTPONE; |
3179 | } else { | |
a7d94793 | 3180 | struct ofoperation *op; |
254750ce BP |
3181 | struct rule *evict; |
3182 | ||
3183 | if (classifier_count(&table->cls) > table->max_flows) { | |
3184 | bool was_evictable; | |
3185 | ||
3186 | was_evictable = rule->evictable; | |
3187 | rule->evictable = false; | |
3188 | evict = choose_rule_to_evict(table); | |
3189 | rule->evictable = was_evictable; | |
3190 | ||
3191 | if (!evict) { | |
be2b69d1 | 3192 | error = OFPERR_OFPFMFC_TABLE_FULL; |
254750ce BP |
3193 | goto exit; |
3194 | } else if (evict->pending) { | |
3195 | error = OFPROTO_POSTPONE; | |
3196 | goto exit; | |
3197 | } | |
3198 | } else { | |
3199 | evict = NULL; | |
3200 | } | |
3201 | ||
7024dffe | 3202 | group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id); |
2b07c8b1 | 3203 | op = ofoperation_create(group, rule, OFOPERATION_ADD, 0); |
a7d94793 | 3204 | op->victim = victim; |
7ee20df1 BP |
3205 | |
3206 | error = ofproto->ofproto_class->rule_construct(rule); | |
3207 | if (error) { | |
e615b0a3 | 3208 | op->group->n_running--; |
7ee20df1 | 3209 | ofoperation_destroy(rule->pending); |
254750ce BP |
3210 | } else if (evict) { |
3211 | delete_flow__(evict, group); | |
7ee20df1 BP |
3212 | } |
3213 | ofopgroup_submit(group); | |
064af421 | 3214 | } |
79eee1eb | 3215 | |
254750ce | 3216 | exit: |
7ee20df1 | 3217 | /* Back out if an error occurred. */ |
79eee1eb | 3218 | if (error) { |
d0918789 | 3219 | oftable_substitute_rule(rule, victim); |
7ee20df1 | 3220 | ofproto_rule_destroy__(rule); |
79eee1eb | 3221 | } |
7ee20df1 | 3222 | return error; |
064af421 | 3223 | } |
79eee1eb BP |
3224 | \f |
3225 | /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */ | |
064af421 | 3226 | |
9ed18e46 BP |
3227 | /* Modifies the rules listed in 'rules', changing their actions to match those |
3228 | * in 'fm'. | |
79eee1eb | 3229 | * |
9ed18e46 BP |
3230 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, |
3231 | * if any. | |
3232 | * | |
3233 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 3234 | static enum ofperr |
7024dffe BP |
3235 | modify_flows__(struct ofproto *ofproto, struct ofconn *ofconn, |
3236 | const struct ofputil_flow_mod *fm, | |
7ee20df1 | 3237 | const struct ofp_header *request, struct list *rules) |
79eee1eb | 3238 | { |
7ee20df1 | 3239 | struct ofopgroup *group; |
9ed18e46 | 3240 | struct rule *rule; |
5c67e4af | 3241 | enum ofperr error; |
79eee1eb | 3242 | |
7024dffe | 3243 | group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id); |
5c67e4af | 3244 | error = OFPERR_OFPBRC_EPERM; |
9ed18e46 | 3245 | LIST_FOR_EACH (rule, ofproto_node, rules) { |
08043761 BP |
3246 | struct ofoperation *op; |
3247 | bool actions_changed; | |
3248 | ovs_be64 new_cookie; | |
3249 | ||
2e1ae200 JR |
3250 | /* FIXME: Implement OFPFF12_RESET_COUNTS */ |
3251 | ||
5c67e4af BP |
3252 | if (rule_is_modifiable(rule)) { |
3253 | /* At least one rule is modifiable, don't report EPERM error. */ | |
3254 | error = 0; | |
3255 | } else { | |
3256 | continue; | |
3257 | } | |
3258 | ||
08043761 BP |
3259 | actions_changed = !ofpacts_equal(fm->ofpacts, fm->ofpacts_len, |
3260 | rule->ofpacts, rule->ofpacts_len); | |
3261 | new_cookie = (fm->new_cookie != htonll(UINT64_MAX) | |
3262 | ? fm->new_cookie | |
3263 | : rule->flow_cookie); | |
3264 | if (!actions_changed && new_cookie == rule->flow_cookie) { | |
3265 | /* No change at all. */ | |
3266 | continue; | |
3267 | } | |
a7d94793 | 3268 | |
2b07c8b1 | 3269 | op = ofoperation_create(group, rule, OFOPERATION_MODIFY, 0); |
08043761 BP |
3270 | rule->flow_cookie = new_cookie; |
3271 | if (actions_changed) { | |
a7d94793 BP |
3272 | op->ofpacts = rule->ofpacts; |
3273 | op->ofpacts_len = rule->ofpacts_len; | |
f25d0cf3 BP |
3274 | rule->ofpacts = xmemdup(fm->ofpacts, fm->ofpacts_len); |
3275 | rule->ofpacts_len = fm->ofpacts_len; | |
3276 | rule->ofproto->ofproto_class->rule_modify_actions(rule); | |
308881af | 3277 | } else { |
08043761 | 3278 | ofoperation_complete(op, 0); |
623e1caf | 3279 | } |
5ecc9d81 | 3280 | } |
7ee20df1 | 3281 | ofopgroup_submit(group); |
79eee1eb | 3282 | |
5c67e4af | 3283 | return error; |
9ed18e46 BP |
3284 | } |
3285 | ||
9387b970 SH |
3286 | static enum ofperr |
3287 | modify_flows_add(struct ofproto *ofproto, struct ofconn *ofconn, | |
3288 | const struct ofputil_flow_mod *fm, | |
3289 | const struct ofp_header *request) | |
3290 | { | |
3291 | if (fm->cookie_mask != htonll(0) || fm->new_cookie == htonll(UINT64_MAX)) { | |
3292 | return 0; | |
3293 | } | |
3294 | return add_flow(ofproto, ofconn, fm, request); | |
3295 | } | |
3296 | ||
90bf1e07 BP |
3297 | /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on |
3298 | * failure. | |
9ed18e46 BP |
3299 | * |
3300 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, | |
3301 | * if any. */ | |
90bf1e07 | 3302 | static enum ofperr |
7024dffe | 3303 | modify_flows_loose(struct ofproto *ofproto, struct ofconn *ofconn, |
1b9d6420 | 3304 | const struct ofputil_flow_mod *fm, |
7ee20df1 | 3305 | const struct ofp_header *request) |
9ed18e46 | 3306 | { |
9ed18e46 BP |
3307 | struct list rules; |
3308 | int error; | |
3309 | ||
81a76618 | 3310 | error = collect_rules_loose(ofproto, fm->table_id, &fm->match, |
e729e793 | 3311 | fm->cookie, fm->cookie_mask, |
7f05e7ab | 3312 | OFPP_ANY, &rules); |
623e1caf JP |
3313 | if (error) { |
3314 | return error; | |
3315 | } else if (list_is_empty(&rules)) { | |
9387b970 | 3316 | return modify_flows_add(ofproto, ofconn, fm, request); |
623e1caf JP |
3317 | } else { |
3318 | return modify_flows__(ofproto, ofconn, fm, request, &rules); | |
3319 | } | |
79eee1eb BP |
3320 | } |
3321 | ||
3322 | /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error | |
90bf1e07 | 3323 | * code on failure. |
79eee1eb | 3324 | * |
9ed18e46 | 3325 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, |
79eee1eb | 3326 | * if any. */ |
90bf1e07 | 3327 | static enum ofperr |
7024dffe | 3328 | modify_flow_strict(struct ofproto *ofproto, struct ofconn *ofconn, |
1b9d6420 | 3329 | const struct ofputil_flow_mod *fm, |
7ee20df1 | 3330 | const struct ofp_header *request) |
79eee1eb | 3331 | { |
9ed18e46 | 3332 | struct list rules; |
6c1491fb BP |
3333 | int error; |
3334 | ||
81a76618 BP |
3335 | error = collect_rules_strict(ofproto, fm->table_id, &fm->match, |
3336 | fm->priority, fm->cookie, fm->cookie_mask, | |
7f05e7ab | 3337 | OFPP_ANY, &rules); |
623e1caf JP |
3338 | |
3339 | if (error) { | |
3340 | return error; | |
3341 | } else if (list_is_empty(&rules)) { | |
9387b970 | 3342 | return modify_flows_add(ofproto, ofconn, fm, request); |
623e1caf JP |
3343 | } else { |
3344 | return list_is_singleton(&rules) ? modify_flows__(ofproto, ofconn, | |
3345 | fm, request, &rules) | |
3346 | : 0; | |
3347 | } | |
79eee1eb | 3348 | } |
9ed18e46 BP |
3349 | \f |
3350 | /* OFPFC_DELETE implementation. */ | |
79eee1eb | 3351 | |
254750ce BP |
3352 | static void |
3353 | delete_flow__(struct rule *rule, struct ofopgroup *group) | |
3354 | { | |
3355 | struct ofproto *ofproto = rule->ofproto; | |
3356 | ||
3357 | ofproto_rule_send_removed(rule, OFPRR_DELETE); | |
3358 | ||
2b07c8b1 | 3359 | ofoperation_create(group, rule, OFOPERATION_DELETE, OFPRR_DELETE); |
254750ce BP |
3360 | oftable_remove_rule(rule); |
3361 | ofproto->ofproto_class->rule_destruct(rule); | |
3362 | } | |
3363 | ||
9ed18e46 BP |
3364 | /* Deletes the rules listed in 'rules'. |
3365 | * | |
3366 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 3367 | static enum ofperr |
7024dffe BP |
3368 | delete_flows__(struct ofproto *ofproto, struct ofconn *ofconn, |
3369 | const struct ofp_header *request, struct list *rules) | |
064af421 | 3370 | { |
9ed18e46 | 3371 | struct rule *rule, *next; |
7ee20df1 | 3372 | struct ofopgroup *group; |
79eee1eb | 3373 | |
7024dffe | 3374 | group = ofopgroup_create(ofproto, ofconn, request, UINT32_MAX); |
9ed18e46 | 3375 | LIST_FOR_EACH_SAFE (rule, next, ofproto_node, rules) { |
254750ce | 3376 | delete_flow__(rule, group); |
79eee1eb | 3377 | } |
7ee20df1 | 3378 | ofopgroup_submit(group); |
79eee1eb | 3379 | |
9ed18e46 | 3380 | return 0; |
79eee1eb | 3381 | } |
79eee1eb BP |
3382 | |
3383 | /* Implements OFPFC_DELETE. */ | |
90bf1e07 | 3384 | static enum ofperr |
7024dffe BP |
3385 | delete_flows_loose(struct ofproto *ofproto, struct ofconn *ofconn, |
3386 | const struct ofputil_flow_mod *fm, | |
7ee20df1 | 3387 | const struct ofp_header *request) |
79eee1eb | 3388 | { |
9ed18e46 | 3389 | struct list rules; |
90bf1e07 | 3390 | enum ofperr error; |
064af421 | 3391 | |
81a76618 | 3392 | error = collect_rules_loose(ofproto, fm->table_id, &fm->match, |
e729e793 JP |
3393 | fm->cookie, fm->cookie_mask, |
3394 | fm->out_port, &rules); | |
9ed18e46 | 3395 | return (error ? error |
7024dffe BP |
3396 | : !list_is_empty(&rules) ? delete_flows__(ofproto, ofconn, request, |
3397 | &rules) | |
9ed18e46 | 3398 | : 0); |
064af421 BP |
3399 | } |
3400 | ||
79eee1eb | 3401 | /* Implements OFPFC_DELETE_STRICT. */ |
90bf1e07 | 3402 | static enum ofperr |
7024dffe | 3403 | delete_flow_strict(struct ofproto *ofproto, struct ofconn *ofconn, |
1b9d6420 | 3404 | const struct ofputil_flow_mod *fm, |
7ee20df1 | 3405 | const struct ofp_header *request) |
79eee1eb | 3406 | { |
9ed18e46 | 3407 | struct list rules; |
90bf1e07 | 3408 | enum ofperr error; |
79eee1eb | 3409 | |
81a76618 BP |
3410 | error = collect_rules_strict(ofproto, fm->table_id, &fm->match, |
3411 | fm->priority, fm->cookie, fm->cookie_mask, | |
e729e793 | 3412 | fm->out_port, &rules); |
9ed18e46 | 3413 | return (error ? error |
7024dffe BP |
3414 | : list_is_singleton(&rules) ? delete_flows__(ofproto, ofconn, |
3415 | request, &rules) | |
9ed18e46 | 3416 | : 0); |
abe529af BP |
3417 | } |
3418 | ||
3419 | static void | |
3420 | ofproto_rule_send_removed(struct rule *rule, uint8_t reason) | |
3421 | { | |
3422 | struct ofputil_flow_removed fr; | |
3423 | ||
2b07c8b1 | 3424 | if (ofproto_rule_is_hidden(rule) || !rule->send_flow_removed) { |
abe529af BP |
3425 | return; |
3426 | } | |
3427 | ||
5cb7a798 | 3428 | minimatch_expand(&rule->cr.match, &fr.match); |
81a76618 | 3429 | fr.priority = rule->cr.priority; |
abe529af BP |
3430 | fr.cookie = rule->flow_cookie; |
3431 | fr.reason = reason; | |
95216219 | 3432 | fr.table_id = rule->table_id; |
f27f2134 BP |
3433 | calc_flow_duration__(rule->created, time_msec(), |
3434 | &fr.duration_sec, &fr.duration_nsec); | |
abe529af | 3435 | fr.idle_timeout = rule->idle_timeout; |
fa2bad0f | 3436 | fr.hard_timeout = rule->hard_timeout; |
abe529af BP |
3437 | rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count, |
3438 | &fr.byte_count); | |
3439 | ||
3440 | connmgr_send_flow_removed(rule->ofproto->connmgr, &fr); | |
3441 | } | |
3442 | ||
1745cd08 BP |
3443 | void |
3444 | ofproto_rule_update_used(struct rule *rule, long long int used) | |
3445 | { | |
3446 | if (used > rule->used) { | |
254750ce BP |
3447 | struct eviction_group *evg = rule->eviction_group; |
3448 | ||
1745cd08 | 3449 | rule->used = used; |
254750ce BP |
3450 | if (evg) { |
3451 | heap_change(&evg->rules, &rule->evg_node, | |
3452 | rule_eviction_priority(rule)); | |
3453 | } | |
1745cd08 BP |
3454 | } |
3455 | } | |
3456 | ||
abe529af BP |
3457 | /* Sends an OpenFlow "flow removed" message with the given 'reason' (either |
3458 | * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its | |
3459 | * ofproto. | |
3460 | * | |
e2a3d183 BP |
3461 | * 'rule' must not have a pending operation (that is, 'rule->pending' must be |
3462 | * NULL). | |
3463 | * | |
abe529af BP |
3464 | * ofproto implementation ->run() functions should use this function to expire |
3465 | * OpenFlow flows. */ | |
3466 | void | |
3467 | ofproto_rule_expire(struct rule *rule, uint8_t reason) | |
3468 | { | |
7ee20df1 BP |
3469 | struct ofproto *ofproto = rule->ofproto; |
3470 | struct ofopgroup *group; | |
3471 | ||
cb22974d | 3472 | ovs_assert(reason == OFPRR_HARD_TIMEOUT || reason == OFPRR_IDLE_TIMEOUT); |
7ee20df1 | 3473 | |
abe529af | 3474 | ofproto_rule_send_removed(rule, reason); |
7ee20df1 | 3475 | |
7024dffe | 3476 | group = ofopgroup_create_unattached(ofproto); |
2b07c8b1 | 3477 | ofoperation_create(group, rule, OFOPERATION_DELETE, reason); |
d0918789 | 3478 | oftable_remove_rule(rule); |
254750ce | 3479 | ofproto->ofproto_class->rule_destruct(rule); |
7ee20df1 | 3480 | ofopgroup_submit(group); |
79eee1eb BP |
3481 | } |
3482 | \f | |
90bf1e07 | 3483 | static enum ofperr |
2e4f5fcf | 3484 | handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3485 | { |
a5b8d268 | 3486 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
a9a2da38 | 3487 | struct ofputil_flow_mod fm; |
f25d0cf3 BP |
3488 | uint64_t ofpacts_stub[1024 / 8]; |
3489 | struct ofpbuf ofpacts; | |
90bf1e07 | 3490 | enum ofperr error; |
a5b8d268 | 3491 | long long int now; |
064af421 | 3492 | |
76589937 | 3493 | error = reject_slave_controller(ofconn); |
9deba63b | 3494 | if (error) { |
f25d0cf3 | 3495 | goto exit; |
9deba63b | 3496 | } |
3052b0c5 | 3497 | |
f25d0cf3 BP |
3498 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
3499 | error = ofputil_decode_flow_mod(&fm, oh, ofconn_get_protocol(ofconn), | |
3500 | &ofpacts); | |
548de4dd BP |
3501 | if (!error) { |
3502 | error = ofpacts_check(fm.ofpacts, fm.ofpacts_len, | |
81a76618 | 3503 | &fm.match.flow, ofproto->max_ports); |
548de4dd BP |
3504 | } |
3505 | if (!error) { | |
f25d0cf3 | 3506 | error = handle_flow_mod__(ofconn_get_ofproto(ofconn), ofconn, &fm, oh); |
49bdc010 | 3507 | } |
a5b8d268 | 3508 | if (error) { |
f25d0cf3 | 3509 | goto exit_free_ofpacts; |
a5b8d268 | 3510 | } |
2e310801 | 3511 | |
a5b8d268 BP |
3512 | /* Record the operation for logging a summary report. */ |
3513 | switch (fm.command) { | |
3514 | case OFPFC_ADD: | |
3515 | ofproto->n_add++; | |
3516 | break; | |
3517 | ||
3518 | case OFPFC_MODIFY: | |
3519 | case OFPFC_MODIFY_STRICT: | |
3520 | ofproto->n_modify++; | |
3521 | break; | |
3522 | ||
3523 | case OFPFC_DELETE: | |
3524 | case OFPFC_DELETE_STRICT: | |
3525 | ofproto->n_delete++; | |
3526 | break; | |
3527 | } | |
3528 | ||
3529 | now = time_msec(); | |
3530 | if (ofproto->next_op_report == LLONG_MAX) { | |
3531 | ofproto->first_op = now; | |
3532 | ofproto->next_op_report = MAX(now + 10 * 1000, | |
3533 | ofproto->op_backoff); | |
3534 | ofproto->op_backoff = ofproto->next_op_report + 60 * 1000; | |
3535 | } | |
3536 | ofproto->last_op = now; | |
3537 | ||
f25d0cf3 BP |
3538 | exit_free_ofpacts: |
3539 | ofpbuf_uninit(&ofpacts); | |
3540 | exit: | |
3541 | return error; | |
75a75043 BP |
3542 | } |
3543 | ||
90bf1e07 | 3544 | static enum ofperr |
75a75043 BP |
3545 | handle_flow_mod__(struct ofproto *ofproto, struct ofconn *ofconn, |
3546 | const struct ofputil_flow_mod *fm, | |
3547 | const struct ofp_header *oh) | |
3548 | { | |
3549 | if (ofproto->n_pending >= 50) { | |
cb22974d | 3550 | ovs_assert(!list_is_empty(&ofproto->pending)); |
75a75043 BP |
3551 | return OFPROTO_POSTPONE; |
3552 | } | |
3553 | ||
3554 | switch (fm->command) { | |
3052b0c5 | 3555 | case OFPFC_ADD: |
75a75043 | 3556 | return add_flow(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3557 | |
3558 | case OFPFC_MODIFY: | |
75a75043 | 3559 | return modify_flows_loose(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3560 | |
3561 | case OFPFC_MODIFY_STRICT: | |
75a75043 | 3562 | return modify_flow_strict(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3563 | |
3564 | case OFPFC_DELETE: | |
75a75043 | 3565 | return delete_flows_loose(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3566 | |
3567 | case OFPFC_DELETE_STRICT: | |
75a75043 | 3568 | return delete_flow_strict(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3569 | |
3570 | default: | |
75a75043 | 3571 | if (fm->command > 0xff) { |
fbfa2911 BP |
3572 | VLOG_WARN_RL(&rl, "%s: flow_mod has explicit table_id but " |
3573 | "flow_mod_table_id extension is not enabled", | |
3574 | ofproto->name); | |
6c1491fb | 3575 | } |
90bf1e07 | 3576 | return OFPERR_OFPFMFC_BAD_COMMAND; |
3052b0c5 BP |
3577 | } |
3578 | } | |
3579 | ||
90bf1e07 | 3580 | static enum ofperr |
d1e2cf21 | 3581 | handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh) |
9deba63b | 3582 | { |
6ea4776b | 3583 | struct ofputil_role_request rr; |
9deba63b BP |
3584 | struct ofpbuf *buf; |
3585 | uint32_t role; | |
6ea4776b JR |
3586 | enum ofperr error; |
3587 | ||
3588 | error = ofputil_decode_role_message(oh, &rr); | |
3589 | if (error) { | |
3590 | return error; | |
3591 | } | |
9deba63b | 3592 | |
6ea4776b JR |
3593 | if (rr.request_current_role_only) { |
3594 | role = ofconn_get_role(ofconn); /* NX_ROLE_* */ | |
3595 | goto reply; | |
9deba63b BP |
3596 | } |
3597 | ||
6ea4776b JR |
3598 | role = rr.role; |
3599 | ||
7ee20df1 BP |
3600 | if (ofconn_get_role(ofconn) != role |
3601 | && ofconn_has_pending_opgroups(ofconn)) { | |
3602 | return OFPROTO_POSTPONE; | |
3603 | } | |
3604 | ||
6ea4776b JR |
3605 | if (rr.have_generation_id) { |
3606 | if (!ofconn_set_master_election_id(ofconn, rr.generation_id)) { | |
3607 | return OFPERR_OFPRRFC_STALE; | |
3608 | } | |
3609 | } | |
3610 | ||
1ce0a5fa | 3611 | ofconn_set_role(ofconn, role); |
9deba63b | 3612 | |
6ea4776b JR |
3613 | reply: |
3614 | buf = ofputil_encode_role_reply(oh, role); | |
b0421aa2 | 3615 | ofconn_send_reply(ofconn, buf); |
9deba63b BP |
3616 | |
3617 | return 0; | |
3618 | } | |
3619 | ||
90bf1e07 | 3620 | static enum ofperr |
6c1491fb BP |
3621 | handle_nxt_flow_mod_table_id(struct ofconn *ofconn, |
3622 | const struct ofp_header *oh) | |
3623 | { | |
982697a4 | 3624 | const struct nx_flow_mod_table_id *msg = ofpmsg_body(oh); |
27527aa0 BP |
3625 | enum ofputil_protocol cur, next; |
3626 | ||
3627 | cur = ofconn_get_protocol(ofconn); | |
3628 | next = ofputil_protocol_set_tid(cur, msg->set != 0); | |
3629 | ofconn_set_protocol(ofconn, next); | |
6c1491fb | 3630 | |
6c1491fb BP |
3631 | return 0; |
3632 | } | |
3633 | ||
90bf1e07 | 3634 | static enum ofperr |
d1e2cf21 | 3635 | handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh) |
09246b99 | 3636 | { |
982697a4 | 3637 | const struct nx_set_flow_format *msg = ofpmsg_body(oh); |
27527aa0 BP |
3638 | enum ofputil_protocol cur, next; |
3639 | enum ofputil_protocol next_base; | |
09246b99 | 3640 | |
27527aa0 BP |
3641 | next_base = ofputil_nx_flow_format_to_protocol(ntohl(msg->format)); |
3642 | if (!next_base) { | |
90bf1e07 | 3643 | return OFPERR_OFPBRC_EPERM; |
09246b99 | 3644 | } |
7ee20df1 | 3645 | |
27527aa0 BP |
3646 | cur = ofconn_get_protocol(ofconn); |
3647 | next = ofputil_protocol_set_base(cur, next_base); | |
3648 | if (cur != next && ofconn_has_pending_opgroups(ofconn)) { | |
3649 | /* Avoid sending async messages in surprising protocol. */ | |
7ee20df1 BP |
3650 | return OFPROTO_POSTPONE; |
3651 | } | |
3652 | ||
27527aa0 | 3653 | ofconn_set_protocol(ofconn, next); |
7ee20df1 | 3654 | return 0; |
09246b99 BP |
3655 | } |
3656 | ||
90bf1e07 | 3657 | static enum ofperr |
54834960 EJ |
3658 | handle_nxt_set_packet_in_format(struct ofconn *ofconn, |
3659 | const struct ofp_header *oh) | |
3660 | { | |
982697a4 | 3661 | const struct nx_set_packet_in_format *msg = ofpmsg_body(oh); |
54834960 EJ |
3662 | uint32_t format; |
3663 | ||
54834960 | 3664 | format = ntohl(msg->format); |
a15f0eeb | 3665 | if (format != NXPIF_OPENFLOW10 && format != NXPIF_NXM) { |
90bf1e07 | 3666 | return OFPERR_OFPBRC_EPERM; |
54834960 EJ |
3667 | } |
3668 | ||
3669 | if (format != ofconn_get_packet_in_format(ofconn) | |
3670 | && ofconn_has_pending_opgroups(ofconn)) { | |
3671 | /* Avoid sending async message in surprsing packet in format. */ | |
3672 | return OFPROTO_POSTPONE; | |
3673 | } | |
3674 | ||
3675 | ofconn_set_packet_in_format(ofconn, format); | |
3676 | return 0; | |
3677 | } | |
3678 | ||
80d5aefd BP |
3679 | static enum ofperr |
3680 | handle_nxt_set_async_config(struct ofconn *ofconn, const struct ofp_header *oh) | |
3681 | { | |
982697a4 | 3682 | const struct nx_async_config *msg = ofpmsg_body(oh); |
80d5aefd BP |
3683 | uint32_t master[OAM_N_TYPES]; |
3684 | uint32_t slave[OAM_N_TYPES]; | |
3685 | ||
3686 | master[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[0]); | |
3687 | master[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[0]); | |
3688 | master[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[0]); | |
3689 | ||
3690 | slave[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[1]); | |
3691 | slave[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[1]); | |
3692 | slave[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[1]); | |
3693 | ||
3694 | ofconn_set_async_config(ofconn, master, slave); | |
4550b647 MM |
3695 | if (ofconn_get_type(ofconn) == OFCONN_SERVICE && |
3696 | !ofconn_get_miss_send_len(ofconn)) { | |
3697 | ofconn_set_miss_send_len(ofconn, OFP_DEFAULT_MISS_SEND_LEN); | |
3698 | } | |
80d5aefd BP |
3699 | |
3700 | return 0; | |
3701 | } | |
3702 | ||
a7349929 BP |
3703 | static enum ofperr |
3704 | handle_nxt_set_controller_id(struct ofconn *ofconn, | |
3705 | const struct ofp_header *oh) | |
3706 | { | |
982697a4 | 3707 | const struct nx_controller_id *nci = ofpmsg_body(oh); |
a7349929 | 3708 | |
a7349929 BP |
3709 | if (!is_all_zeros(nci->zero, sizeof nci->zero)) { |
3710 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
3711 | } | |
3712 | ||
3713 | ofconn_set_controller_id(ofconn, ntohs(nci->controller_id)); | |
3714 | return 0; | |
3715 | } | |
3716 | ||
90bf1e07 | 3717 | static enum ofperr |
d1e2cf21 | 3718 | handle_barrier_request(struct ofconn *ofconn, const struct ofp_header *oh) |
246e61ea | 3719 | { |
246e61ea JP |
3720 | struct ofpbuf *buf; |
3721 | ||
7ee20df1 BP |
3722 | if (ofconn_has_pending_opgroups(ofconn)) { |
3723 | return OFPROTO_POSTPONE; | |
3724 | } | |
3725 | ||
982697a4 BP |
3726 | buf = ofpraw_alloc_reply((oh->version == OFP10_VERSION |
3727 | ? OFPRAW_OFPT10_BARRIER_REPLY | |
3728 | : OFPRAW_OFPT11_BARRIER_REPLY), oh, 0); | |
b0421aa2 | 3729 | ofconn_send_reply(ofconn, buf); |
246e61ea JP |
3730 | return 0; |
3731 | } | |
3732 | ||
2b07c8b1 BP |
3733 | static void |
3734 | ofproto_compose_flow_refresh_update(const struct rule *rule, | |
3735 | enum nx_flow_monitor_flags flags, | |
3736 | struct list *msgs) | |
3737 | { | |
3738 | struct ofoperation *op = rule->pending; | |
3739 | struct ofputil_flow_update fu; | |
5cb7a798 | 3740 | struct match match; |
2b07c8b1 BP |
3741 | |
3742 | if (op && op->type == OFOPERATION_ADD && !op->victim) { | |
3743 | /* We'll report the final flow when the operation completes. Reporting | |
3744 | * it now would cause a duplicate report later. */ | |
3745 | return; | |
3746 | } | |
3747 | ||
3748 | fu.event = (flags & (NXFMF_INITIAL | NXFMF_ADD) | |
3749 | ? NXFME_ADDED : NXFME_MODIFIED); | |
3750 | fu.reason = 0; | |
3751 | fu.idle_timeout = rule->idle_timeout; | |
3752 | fu.hard_timeout = rule->hard_timeout; | |
3753 | fu.table_id = rule->table_id; | |
3754 | fu.cookie = rule->flow_cookie; | |
5cb7a798 BP |
3755 | minimatch_expand(&rule->cr.match, &match); |
3756 | fu.match = &match; | |
6b140a4e | 3757 | fu.priority = rule->cr.priority; |
2b07c8b1 BP |
3758 | if (!(flags & NXFMF_ACTIONS)) { |
3759 | fu.ofpacts = NULL; | |
3760 | fu.ofpacts_len = 0; | |
3761 | } else if (!op) { | |
3762 | fu.ofpacts = rule->ofpacts; | |
3763 | fu.ofpacts_len = rule->ofpacts_len; | |
3764 | } else { | |
3765 | /* An operation is in progress. Use the previous version of the flow's | |
3766 | * actions, so that when the operation commits we report the change. */ | |
3767 | switch (op->type) { | |
3768 | case OFOPERATION_ADD: | |
3769 | /* We already verified that there was a victim. */ | |
3770 | fu.ofpacts = op->victim->ofpacts; | |
3771 | fu.ofpacts_len = op->victim->ofpacts_len; | |
3772 | break; | |
3773 | ||
3774 | case OFOPERATION_MODIFY: | |
3775 | if (op->ofpacts) { | |
3776 | fu.ofpacts = op->ofpacts; | |
3777 | fu.ofpacts_len = op->ofpacts_len; | |
3778 | } else { | |
3779 | fu.ofpacts = rule->ofpacts; | |
3780 | fu.ofpacts_len = rule->ofpacts_len; | |
3781 | } | |
3782 | break; | |
3783 | ||
3784 | case OFOPERATION_DELETE: | |
3785 | fu.ofpacts = rule->ofpacts; | |
3786 | fu.ofpacts_len = rule->ofpacts_len; | |
3787 | break; | |
3788 | ||
3789 | default: | |
3790 | NOT_REACHED(); | |
3791 | } | |
3792 | } | |
3793 | ||
3794 | if (list_is_empty(msgs)) { | |
3795 | ofputil_start_flow_update(msgs); | |
3796 | } | |
3797 | ofputil_append_flow_update(&fu, msgs); | |
3798 | } | |
3799 | ||
3800 | void | |
3801 | ofmonitor_compose_refresh_updates(struct list *rules, struct list *msgs) | |
3802 | { | |
3803 | struct rule *rule; | |
3804 | ||
3805 | LIST_FOR_EACH (rule, ofproto_node, rules) { | |
3806 | enum nx_flow_monitor_flags flags = rule->monitor_flags; | |
3807 | rule->monitor_flags = 0; | |
3808 | ||
3809 | ofproto_compose_flow_refresh_update(rule, flags, msgs); | |
3810 | } | |
3811 | } | |
3812 | ||
3813 | static void | |
3814 | ofproto_collect_ofmonitor_refresh_rule(const struct ofmonitor *m, | |
3815 | struct rule *rule, uint64_t seqno, | |
3816 | struct list *rules) | |
3817 | { | |
3818 | enum nx_flow_monitor_flags update; | |
3819 | ||
3820 | if (ofproto_rule_is_hidden(rule)) { | |
3821 | return; | |
3822 | } | |
3823 | ||
3824 | if (!(rule->pending | |
3825 | ? ofoperation_has_out_port(rule->pending, m->out_port) | |
3826 | : ofproto_rule_has_out_port(rule, m->out_port))) { | |
3827 | return; | |
3828 | } | |
3829 | ||
3830 | if (seqno) { | |
3831 | if (rule->add_seqno > seqno) { | |
3832 | update = NXFMF_ADD | NXFMF_MODIFY; | |
3833 | } else if (rule->modify_seqno > seqno) { | |
3834 | update = NXFMF_MODIFY; | |
3835 | } else { | |
3836 | return; | |
3837 | } | |
3838 | ||
3839 | if (!(m->flags & update)) { | |
3840 | return; | |
3841 | } | |
3842 | } else { | |
3843 | update = NXFMF_INITIAL; | |
3844 | } | |
3845 | ||
3846 | if (!rule->monitor_flags) { | |
3847 | list_push_back(rules, &rule->ofproto_node); | |
3848 | } | |
3849 | rule->monitor_flags |= update | (m->flags & NXFMF_ACTIONS); | |
3850 | } | |
3851 | ||
3852 | static void | |
3853 | ofproto_collect_ofmonitor_refresh_rules(const struct ofmonitor *m, | |
3854 | uint64_t seqno, | |
3855 | struct list *rules) | |
3856 | { | |
3857 | const struct ofproto *ofproto = ofconn_get_ofproto(m->ofconn); | |
3858 | const struct ofoperation *op; | |
3859 | const struct oftable *table; | |
81a76618 | 3860 | struct cls_rule target; |
2b07c8b1 | 3861 | |
5cb7a798 | 3862 | cls_rule_init_from_minimatch(&target, &m->match, 0); |
2b07c8b1 BP |
3863 | FOR_EACH_MATCHING_TABLE (table, m->table_id, ofproto) { |
3864 | struct cls_cursor cursor; | |
3865 | struct rule *rule; | |
3866 | ||
81a76618 | 3867 | cls_cursor_init(&cursor, &table->cls, &target); |
2b07c8b1 | 3868 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
cb22974d | 3869 | ovs_assert(!rule->pending); /* XXX */ |
2b07c8b1 BP |
3870 | ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules); |
3871 | } | |
3872 | } | |
3873 | ||
3874 | HMAP_FOR_EACH (op, hmap_node, &ofproto->deletions) { | |
3875 | struct rule *rule = op->rule; | |
3876 | ||
3877 | if (((m->table_id == 0xff | |
3878 | ? !(ofproto->tables[rule->table_id].flags & OFTABLE_HIDDEN) | |
3879 | : m->table_id == rule->table_id)) | |
81a76618 | 3880 | && cls_rule_is_loose_match(&rule->cr, &target.match)) { |
2b07c8b1 BP |
3881 | ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules); |
3882 | } | |
3883 | } | |
48d28ac1 | 3884 | cls_rule_destroy(&target); |
2b07c8b1 BP |
3885 | } |
3886 | ||
3887 | static void | |
3888 | ofproto_collect_ofmonitor_initial_rules(struct ofmonitor *m, | |
3889 | struct list *rules) | |
3890 | { | |
3891 | if (m->flags & NXFMF_INITIAL) { | |
3892 | ofproto_collect_ofmonitor_refresh_rules(m, 0, rules); | |
3893 | } | |
3894 | } | |
3895 | ||
3896 | void | |
3897 | ofmonitor_collect_resume_rules(struct ofmonitor *m, | |
3898 | uint64_t seqno, struct list *rules) | |
3899 | { | |
3900 | ofproto_collect_ofmonitor_refresh_rules(m, seqno, rules); | |
3901 | } | |
3902 | ||
3903 | static enum ofperr | |
982697a4 | 3904 | handle_flow_monitor_request(struct ofconn *ofconn, const struct ofp_header *oh) |
2b07c8b1 BP |
3905 | { |
3906 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
3907 | struct ofmonitor **monitors; | |
3908 | size_t n_monitors, allocated_monitors; | |
3909 | struct list replies; | |
3910 | enum ofperr error; | |
3911 | struct list rules; | |
3912 | struct ofpbuf b; | |
3913 | size_t i; | |
3914 | ||
3915 | error = 0; | |
982697a4 | 3916 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
2b07c8b1 BP |
3917 | monitors = NULL; |
3918 | n_monitors = allocated_monitors = 0; | |
3919 | for (;;) { | |
3920 | struct ofputil_flow_monitor_request request; | |
3921 | struct ofmonitor *m; | |
3922 | int retval; | |
3923 | ||
3924 | retval = ofputil_decode_flow_monitor_request(&request, &b); | |
3925 | if (retval == EOF) { | |
3926 | break; | |
3927 | } else if (retval) { | |
3928 | error = retval; | |
3929 | goto error; | |
3930 | } | |
3931 | ||
3932 | if (request.table_id != 0xff | |
3933 | && request.table_id >= ofproto->n_tables) { | |
3934 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
3935 | goto error; | |
3936 | } | |
3937 | ||
3938 | error = ofmonitor_create(&request, ofconn, &m); | |
3939 | if (error) { | |
3940 | goto error; | |
3941 | } | |
3942 | ||
3943 | if (n_monitors >= allocated_monitors) { | |
3944 | monitors = x2nrealloc(monitors, &allocated_monitors, | |
3945 | sizeof *monitors); | |
3946 | } | |
3947 | monitors[n_monitors++] = m; | |
3948 | } | |
3949 | ||
3950 | list_init(&rules); | |
3951 | for (i = 0; i < n_monitors; i++) { | |
3952 | ofproto_collect_ofmonitor_initial_rules(monitors[i], &rules); | |
3953 | } | |
3954 | ||
982697a4 | 3955 | ofpmp_init(&replies, oh); |
2b07c8b1 BP |
3956 | ofmonitor_compose_refresh_updates(&rules, &replies); |
3957 | ofconn_send_replies(ofconn, &replies); | |
3958 | ||
3959 | free(monitors); | |
3960 | ||
3961 | return 0; | |
3962 | ||
3963 | error: | |
3964 | for (i = 0; i < n_monitors; i++) { | |
3965 | ofmonitor_destroy(monitors[i]); | |
3966 | } | |
3967 | free(monitors); | |
3968 | return error; | |
3969 | } | |
3970 | ||
3971 | static enum ofperr | |
3972 | handle_flow_monitor_cancel(struct ofconn *ofconn, const struct ofp_header *oh) | |
3973 | { | |
3974 | struct ofmonitor *m; | |
3975 | uint32_t id; | |
3976 | ||
3977 | id = ofputil_decode_flow_monitor_cancel(oh); | |
3978 | m = ofmonitor_lookup(ofconn, id); | |
3979 | if (!m) { | |
3980 | return OFPERR_NXBRC_FM_BAD_ID; | |
3981 | } | |
3982 | ||
3983 | ofmonitor_destroy(m); | |
3984 | return 0; | |
3985 | } | |
3986 | ||
90bf1e07 | 3987 | static enum ofperr |
d1e2cf21 | 3988 | handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg) |
064af421 | 3989 | { |
d1e2cf21 | 3990 | const struct ofp_header *oh = msg->data; |
982697a4 | 3991 | enum ofptype type; |
90bf1e07 | 3992 | enum ofperr error; |
064af421 | 3993 | |
982697a4 | 3994 | error = ofptype_decode(&type, oh); |
d1e2cf21 BP |
3995 | if (error) { |
3996 | return error; | |
3997 | } | |
064af421 | 3998 | |
982697a4 | 3999 | switch (type) { |
d1e2cf21 | 4000 | /* OpenFlow requests. */ |
982697a4 | 4001 | case OFPTYPE_ECHO_REQUEST: |
d1e2cf21 | 4002 | return handle_echo_request(ofconn, oh); |
064af421 | 4003 | |
982697a4 | 4004 | case OFPTYPE_FEATURES_REQUEST: |
d1e2cf21 | 4005 | return handle_features_request(ofconn, oh); |
064af421 | 4006 | |
982697a4 | 4007 | case OFPTYPE_GET_CONFIG_REQUEST: |
d1e2cf21 | 4008 | return handle_get_config_request(ofconn, oh); |
064af421 | 4009 | |
982697a4 BP |
4010 | case OFPTYPE_SET_CONFIG: |
4011 | return handle_set_config(ofconn, oh); | |
064af421 | 4012 | |
982697a4 BP |
4013 | case OFPTYPE_PACKET_OUT: |
4014 | return handle_packet_out(ofconn, oh); | |
064af421 | 4015 | |
982697a4 | 4016 | case OFPTYPE_PORT_MOD: |
d1e2cf21 | 4017 | return handle_port_mod(ofconn, oh); |
064af421 | 4018 | |
982697a4 | 4019 | case OFPTYPE_FLOW_MOD: |
2e4f5fcf | 4020 | return handle_flow_mod(ofconn, oh); |
064af421 | 4021 | |
982697a4 | 4022 | case OFPTYPE_BARRIER_REQUEST: |
d1e2cf21 | 4023 | return handle_barrier_request(ofconn, oh); |
064af421 | 4024 | |
6ea4776b JR |
4025 | case OFPTYPE_ROLE_REQUEST: |
4026 | return handle_role_request(ofconn, oh); | |
4027 | ||
d1e2cf21 | 4028 | /* OpenFlow replies. */ |
982697a4 | 4029 | case OFPTYPE_ECHO_REPLY: |
d1e2cf21 | 4030 | return 0; |
246e61ea | 4031 | |
d1e2cf21 | 4032 | /* Nicira extension requests. */ |
982697a4 | 4033 | case OFPTYPE_FLOW_MOD_TABLE_ID: |
6c1491fb | 4034 | return handle_nxt_flow_mod_table_id(ofconn, oh); |
d1e2cf21 | 4035 | |
982697a4 | 4036 | case OFPTYPE_SET_FLOW_FORMAT: |
d1e2cf21 BP |
4037 | return handle_nxt_set_flow_format(ofconn, oh); |
4038 | ||
982697a4 | 4039 | case OFPTYPE_SET_PACKET_IN_FORMAT: |
54834960 EJ |
4040 | return handle_nxt_set_packet_in_format(ofconn, oh); |
4041 | ||
982697a4 | 4042 | case OFPTYPE_SET_CONTROLLER_ID: |
a7349929 BP |
4043 | return handle_nxt_set_controller_id(ofconn, oh); |
4044 | ||
982697a4 | 4045 | case OFPTYPE_FLOW_AGE: |
f27f2134 BP |
4046 | /* Nothing to do. */ |
4047 | return 0; | |
4048 | ||
982697a4 | 4049 | case OFPTYPE_FLOW_MONITOR_CANCEL: |
2b07c8b1 BP |
4050 | return handle_flow_monitor_cancel(ofconn, oh); |
4051 | ||
982697a4 | 4052 | case OFPTYPE_SET_ASYNC_CONFIG: |
80d5aefd BP |
4053 | return handle_nxt_set_async_config(ofconn, oh); |
4054 | ||
349adfb2 | 4055 | /* Statistics requests. */ |
982697a4 BP |
4056 | case OFPTYPE_DESC_STATS_REQUEST: |
4057 | return handle_desc_stats_request(ofconn, oh); | |
4058 | ||
4059 | case OFPTYPE_FLOW_STATS_REQUEST: | |
4060 | return handle_flow_stats_request(ofconn, oh); | |
4061 | ||
4062 | case OFPTYPE_AGGREGATE_STATS_REQUEST: | |
4063 | return handle_aggregate_stats_request(ofconn, oh); | |
4064 | ||
4065 | case OFPTYPE_TABLE_STATS_REQUEST: | |
4066 | return handle_table_stats_request(ofconn, oh); | |
4067 | ||
4068 | case OFPTYPE_PORT_STATS_REQUEST: | |
4069 | return handle_port_stats_request(ofconn, oh); | |
4070 | ||
4071 | case OFPTYPE_QUEUE_STATS_REQUEST: | |
4072 | return handle_queue_stats_request(ofconn, oh); | |
4073 | ||
4074 | case OFPTYPE_PORT_DESC_STATS_REQUEST: | |
4075 | return handle_port_desc_stats_request(ofconn, oh); | |
4076 | ||
4077 | case OFPTYPE_FLOW_MONITOR_STATS_REQUEST: | |
4078 | return handle_flow_monitor_request(ofconn, oh); | |
4079 | ||
2e1ae200 | 4080 | /* FIXME: Change the following once they are implemented: */ |
c545d38d | 4081 | case OFPTYPE_QUEUE_GET_CONFIG_REQUEST: |
2e1ae200 JR |
4082 | case OFPTYPE_GET_ASYNC_REQUEST: |
4083 | case OFPTYPE_METER_MOD: | |
4084 | case OFPTYPE_GROUP_REQUEST: | |
4085 | case OFPTYPE_GROUP_DESC_REQUEST: | |
4086 | case OFPTYPE_GROUP_FEATURES_REQUEST: | |
4087 | case OFPTYPE_METER_REQUEST: | |
4088 | case OFPTYPE_METER_CONFIG_REQUEST: | |
4089 | case OFPTYPE_METER_FEATURES_REQUEST: | |
4090 | case OFPTYPE_TABLE_FEATURES_REQUEST: | |
4091 | return OFPERR_OFPBRC_BAD_TYPE; | |
4092 | ||
982697a4 BP |
4093 | case OFPTYPE_HELLO: |
4094 | case OFPTYPE_ERROR: | |
4095 | case OFPTYPE_FEATURES_REPLY: | |
4096 | case OFPTYPE_GET_CONFIG_REPLY: | |
4097 | case OFPTYPE_PACKET_IN: | |
4098 | case OFPTYPE_FLOW_REMOVED: | |
4099 | case OFPTYPE_PORT_STATUS: | |
4100 | case OFPTYPE_BARRIER_REPLY: | |
c545d38d | 4101 | case OFPTYPE_QUEUE_GET_CONFIG_REPLY: |
982697a4 BP |
4102 | case OFPTYPE_DESC_STATS_REPLY: |
4103 | case OFPTYPE_FLOW_STATS_REPLY: | |
4104 | case OFPTYPE_QUEUE_STATS_REPLY: | |
4105 | case OFPTYPE_PORT_STATS_REPLY: | |
4106 | case OFPTYPE_TABLE_STATS_REPLY: | |
4107 | case OFPTYPE_AGGREGATE_STATS_REPLY: | |
4108 | case OFPTYPE_PORT_DESC_STATS_REPLY: | |
4109 | case OFPTYPE_ROLE_REPLY: | |
4110 | case OFPTYPE_FLOW_MONITOR_PAUSED: | |
4111 | case OFPTYPE_FLOW_MONITOR_RESUMED: | |
4112 | case OFPTYPE_FLOW_MONITOR_STATS_REPLY: | |
2e1ae200 JR |
4113 | case OFPTYPE_GET_ASYNC_REPLY: |
4114 | case OFPTYPE_GROUP_REPLY: | |
4115 | case OFPTYPE_GROUP_DESC_REPLY: | |
4116 | case OFPTYPE_GROUP_FEATURES_REPLY: | |
4117 | case OFPTYPE_METER_REPLY: | |
4118 | case OFPTYPE_METER_CONFIG_REPLY: | |
4119 | case OFPTYPE_METER_FEATURES_REPLY: | |
4120 | case OFPTYPE_TABLE_FEATURES_REPLY: | |
064af421 | 4121 | default: |
982697a4 | 4122 | return OFPERR_OFPBRC_BAD_TYPE; |
064af421 | 4123 | } |
d1e2cf21 | 4124 | } |
064af421 | 4125 | |
7ee20df1 | 4126 | static bool |
d1e2cf21 BP |
4127 | handle_openflow(struct ofconn *ofconn, struct ofpbuf *ofp_msg) |
4128 | { | |
4129 | int error = handle_openflow__(ofconn, ofp_msg); | |
7ee20df1 | 4130 | if (error && error != OFPROTO_POSTPONE) { |
1be5ff75 | 4131 | ofconn_send_error(ofconn, ofp_msg->data, error); |
064af421 | 4132 | } |
d1e2cf21 | 4133 | COVERAGE_INC(ofproto_recv_openflow); |
7ee20df1 BP |
4134 | return error != OFPROTO_POSTPONE; |
4135 | } | |
4136 | \f | |
4137 | /* Asynchronous operations. */ | |
4138 | ||
4139 | /* Creates and returns a new ofopgroup that is not associated with any | |
4140 | * OpenFlow connection. | |
4141 | * | |
4142 | * The caller should add operations to the returned group with | |
4143 | * ofoperation_create() and then submit it with ofopgroup_submit(). */ | |
4144 | static struct ofopgroup * | |
7024dffe | 4145 | ofopgroup_create_unattached(struct ofproto *ofproto) |
7ee20df1 BP |
4146 | { |
4147 | struct ofopgroup *group = xzalloc(sizeof *group); | |
4148 | group->ofproto = ofproto; | |
4149 | list_init(&group->ofproto_node); | |
4150 | list_init(&group->ops); | |
4151 | list_init(&group->ofconn_node); | |
4152 | return group; | |
4153 | } | |
4154 | ||
7024dffe BP |
4155 | /* Creates and returns a new ofopgroup for 'ofproto'. |
4156 | * | |
4157 | * If 'ofconn' is NULL, the new ofopgroup is not associated with any OpenFlow | |
4158 | * connection. The 'request' and 'buffer_id' arguments are ignored. | |
4159 | * | |
4160 | * If 'ofconn' is nonnull, then the new ofopgroup is associated with 'ofconn'. | |
4161 | * If the ofopgroup eventually fails, then the error reply will include | |
4162 | * 'request'. If the ofopgroup eventually succeeds, then the packet with | |
4163 | * buffer id 'buffer_id' on 'ofconn' will be sent by 'ofconn''s ofproto. | |
7ee20df1 BP |
4164 | * |
4165 | * The caller should add operations to the returned group with | |
4166 | * ofoperation_create() and then submit it with ofopgroup_submit(). */ | |
4167 | static struct ofopgroup * | |
7024dffe BP |
4168 | ofopgroup_create(struct ofproto *ofproto, struct ofconn *ofconn, |
4169 | const struct ofp_header *request, uint32_t buffer_id) | |
7ee20df1 | 4170 | { |
7024dffe BP |
4171 | struct ofopgroup *group = ofopgroup_create_unattached(ofproto); |
4172 | if (ofconn) { | |
4173 | size_t request_len = ntohs(request->length); | |
7ee20df1 | 4174 | |
cb22974d | 4175 | ovs_assert(ofconn_get_ofproto(ofconn) == ofproto); |
7ee20df1 | 4176 | |
7024dffe BP |
4177 | ofconn_add_opgroup(ofconn, &group->ofconn_node); |
4178 | group->ofconn = ofconn; | |
4179 | group->request = xmemdup(request, MIN(request_len, 64)); | |
4180 | group->buffer_id = buffer_id; | |
4181 | } | |
7ee20df1 BP |
4182 | return group; |
4183 | } | |
4184 | ||
4185 | /* Submits 'group' for processing. | |
4186 | * | |
4187 | * If 'group' contains no operations (e.g. none were ever added, or all of the | |
4188 | * ones that were added completed synchronously), then it is destroyed | |
4189 | * immediately. Otherwise it is added to the ofproto's list of pending | |
4190 | * groups. */ | |
4191 | static void | |
4192 | ofopgroup_submit(struct ofopgroup *group) | |
4193 | { | |
e615b0a3 BP |
4194 | if (!group->n_running) { |
4195 | ofopgroup_complete(group); | |
7ee20df1 BP |
4196 | } else { |
4197 | list_push_back(&group->ofproto->pending, &group->ofproto_node); | |
dd5616b3 | 4198 | group->ofproto->n_pending++; |
7ee20df1 BP |
4199 | } |
4200 | } | |
4201 | ||
4202 | static void | |
e615b0a3 | 4203 | ofopgroup_complete(struct ofopgroup *group) |
7ee20df1 | 4204 | { |
e615b0a3 | 4205 | struct ofproto *ofproto = group->ofproto; |
2b07c8b1 BP |
4206 | |
4207 | struct ofconn *abbrev_ofconn; | |
4208 | ovs_be32 abbrev_xid; | |
4209 | ||
e615b0a3 BP |
4210 | struct ofoperation *op, *next_op; |
4211 | int error; | |
4212 | ||
cb22974d | 4213 | ovs_assert(!group->n_running); |
e615b0a3 BP |
4214 | |
4215 | error = 0; | |
4216 | LIST_FOR_EACH (op, group_node, &group->ops) { | |
4217 | if (op->error) { | |
4218 | error = op->error; | |
4219 | break; | |
4220 | } | |
4221 | } | |
4222 | ||
4223 | if (!error && group->ofconn && group->buffer_id != UINT32_MAX) { | |
4224 | LIST_FOR_EACH (op, group_node, &group->ops) { | |
4225 | if (op->type != OFOPERATION_DELETE) { | |
4226 | struct ofpbuf *packet; | |
4227 | uint16_t in_port; | |
4228 | ||
4229 | error = ofconn_pktbuf_retrieve(group->ofconn, group->buffer_id, | |
4230 | &packet, &in_port); | |
4231 | if (packet) { | |
cb22974d | 4232 | ovs_assert(!error); |
e615b0a3 BP |
4233 | error = rule_execute(op->rule, in_port, packet); |
4234 | } | |
4235 | break; | |
4236 | } | |
4237 | } | |
4238 | } | |
4239 | ||
2b07c8b1 BP |
4240 | if (!error && !list_is_empty(&group->ofconn_node)) { |
4241 | abbrev_ofconn = group->ofconn; | |
4242 | abbrev_xid = group->request->xid; | |
4243 | } else { | |
4244 | abbrev_ofconn = NULL; | |
4245 | abbrev_xid = htonl(0); | |
4246 | } | |
e615b0a3 BP |
4247 | LIST_FOR_EACH_SAFE (op, next_op, group_node, &group->ops) { |
4248 | struct rule *rule = op->rule; | |
2b07c8b1 BP |
4249 | |
4250 | if (!op->error && !ofproto_rule_is_hidden(rule)) { | |
4251 | /* Check that we can just cast from ofoperation_type to | |
4252 | * nx_flow_update_event. */ | |
1ec3db6f EJ |
4253 | BUILD_ASSERT_DECL((enum nx_flow_update_event) OFOPERATION_ADD |
4254 | == NXFME_ADDED); | |
4255 | BUILD_ASSERT_DECL((enum nx_flow_update_event) OFOPERATION_DELETE | |
4256 | == NXFME_DELETED); | |
4257 | BUILD_ASSERT_DECL((enum nx_flow_update_event) OFOPERATION_MODIFY | |
4258 | == NXFME_MODIFIED); | |
2b07c8b1 BP |
4259 | |
4260 | ofmonitor_report(ofproto->connmgr, rule, | |
4261 | (enum nx_flow_update_event) op->type, | |
4262 | op->reason, abbrev_ofconn, abbrev_xid); | |
4263 | } | |
4264 | ||
e615b0a3 BP |
4265 | rule->pending = NULL; |
4266 | ||
4267 | switch (op->type) { | |
4268 | case OFOPERATION_ADD: | |
4269 | if (!op->error) { | |
5cb7a798 BP |
4270 | uint16_t vid_mask; |
4271 | ||
e615b0a3 | 4272 | ofproto_rule_destroy__(op->victim); |
5cb7a798 BP |
4273 | vid_mask = minimask_get_vid_mask(&rule->cr.match.mask); |
4274 | if (vid_mask == VLAN_VID_MASK) { | |
e615b0a3 | 4275 | if (ofproto->vlan_bitmap) { |
5cb7a798 | 4276 | uint16_t vid = miniflow_get_vid(&rule->cr.match.flow); |
e615b0a3 BP |
4277 | if (!bitmap_is_set(ofproto->vlan_bitmap, vid)) { |
4278 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
4279 | ofproto->vlans_changed = true; | |
4280 | } | |
4281 | } else { | |
4282 | ofproto->vlans_changed = true; | |
4283 | } | |
4284 | } | |
4285 | } else { | |
4286 | oftable_substitute_rule(rule, op->victim); | |
4287 | ofproto_rule_destroy__(rule); | |
4288 | } | |
4289 | break; | |
4290 | ||
4291 | case OFOPERATION_DELETE: | |
cb22974d | 4292 | ovs_assert(!op->error); |
e615b0a3 BP |
4293 | ofproto_rule_destroy__(rule); |
4294 | op->rule = NULL; | |
4295 | break; | |
4296 | ||
4297 | case OFOPERATION_MODIFY: | |
4298 | if (!op->error) { | |
4299 | rule->modified = time_msec(); | |
4300 | } else { | |
41792464 | 4301 | rule->flow_cookie = op->flow_cookie; |
08043761 BP |
4302 | if (op->ofpacts) { |
4303 | free(rule->ofpacts); | |
4304 | rule->ofpacts = op->ofpacts; | |
4305 | rule->ofpacts_len = op->ofpacts_len; | |
4306 | op->ofpacts = NULL; | |
4307 | op->ofpacts_len = 0; | |
4308 | } | |
e615b0a3 BP |
4309 | } |
4310 | break; | |
4311 | ||
4312 | default: | |
4313 | NOT_REACHED(); | |
4314 | } | |
4315 | ||
4316 | ofoperation_destroy(op); | |
4317 | } | |
4318 | ||
2b07c8b1 BP |
4319 | ofmonitor_flush(ofproto->connmgr); |
4320 | ||
7ee20df1 | 4321 | if (!list_is_empty(&group->ofproto_node)) { |
cb22974d | 4322 | ovs_assert(ofproto->n_pending > 0); |
e615b0a3 | 4323 | ofproto->n_pending--; |
7ee20df1 BP |
4324 | list_remove(&group->ofproto_node); |
4325 | } | |
4326 | if (!list_is_empty(&group->ofconn_node)) { | |
4327 | list_remove(&group->ofconn_node); | |
e615b0a3 BP |
4328 | if (error) { |
4329 | ofconn_send_error(group->ofconn, group->request, error); | |
7ee20df1 | 4330 | } |
e615b0a3 | 4331 | connmgr_retry(ofproto->connmgr); |
7ee20df1 BP |
4332 | } |
4333 | free(group->request); | |
4334 | free(group); | |
4335 | } | |
4336 | ||
4337 | /* Initiates a new operation on 'rule', of the specified 'type', within | |
a7d94793 BP |
4338 | * 'group'. Prior to calling, 'rule' must not have any pending operation. |
4339 | * | |
2b07c8b1 BP |
4340 | * For a 'type' of OFOPERATION_DELETE, 'reason' should specify the reason that |
4341 | * the flow is being deleted. For other 'type's, 'reason' is ignored (use 0). | |
4342 | * | |
a7d94793 BP |
4343 | * Returns the newly created ofoperation (which is also available as |
4344 | * rule->pending). */ | |
4345 | static struct ofoperation * | |
7ee20df1 | 4346 | ofoperation_create(struct ofopgroup *group, struct rule *rule, |
2b07c8b1 BP |
4347 | enum ofoperation_type type, |
4348 | enum ofp_flow_removed_reason reason) | |
7ee20df1 | 4349 | { |
a5b8d268 | 4350 | struct ofproto *ofproto = group->ofproto; |
7ee20df1 BP |
4351 | struct ofoperation *op; |
4352 | ||
cb22974d | 4353 | ovs_assert(!rule->pending); |
7ee20df1 BP |
4354 | |
4355 | op = rule->pending = xzalloc(sizeof *op); | |
4356 | op->group = group; | |
4357 | list_push_back(&group->ops, &op->group_node); | |
4358 | op->rule = rule; | |
4359 | op->type = type; | |
2b07c8b1 | 4360 | op->reason = reason; |
7ee20df1 BP |
4361 | op->flow_cookie = rule->flow_cookie; |
4362 | ||
e615b0a3 BP |
4363 | group->n_running++; |
4364 | ||
7ee20df1 | 4365 | if (type == OFOPERATION_DELETE) { |
a5b8d268 | 4366 | hmap_insert(&ofproto->deletions, &op->hmap_node, |
7ee20df1 BP |
4367 | cls_rule_hash(&rule->cr, rule->table_id)); |
4368 | } | |
a7d94793 BP |
4369 | |
4370 | return op; | |
7ee20df1 BP |
4371 | } |
4372 | ||
4373 | static void | |
4374 | ofoperation_destroy(struct ofoperation *op) | |
4375 | { | |
4376 | struct ofopgroup *group = op->group; | |
4377 | ||
4378 | if (op->rule) { | |
4379 | op->rule->pending = NULL; | |
4380 | } | |
4381 | if (op->type == OFOPERATION_DELETE) { | |
4382 | hmap_remove(&group->ofproto->deletions, &op->hmap_node); | |
4383 | } | |
4384 | list_remove(&op->group_node); | |
f25d0cf3 | 4385 | free(op->ofpacts); |
7ee20df1 | 4386 | free(op); |
7ee20df1 BP |
4387 | } |
4388 | ||
4389 | /* Indicates that 'op' completed with status 'error', which is either 0 to | |
90bf1e07 | 4390 | * indicate success or an OpenFlow error code on failure. |
7ee20df1 | 4391 | * |
a6a62132 BP |
4392 | * If 'error' is 0, indicating success, the operation will be committed |
4393 | * permanently to the flow table. There is one interesting subcase: | |
4394 | * | |
4395 | * - If 'op' is an "add flow" operation that is replacing an existing rule in | |
4396 | * the flow table (the "victim" rule) by a new one, then the caller must | |
4397 | * have uninitialized any derived state in the victim rule, as in step 5 in | |
4398 | * the "Life Cycle" in ofproto/ofproto-provider.h. ofoperation_complete() | |
4399 | * performs steps 6 and 7 for the victim rule, most notably by calling its | |
4400 | * ->rule_dealloc() function. | |
4401 | * | |
4402 | * If 'error' is nonzero, then generally the operation will be rolled back: | |
4403 | * | |
4404 | * - If 'op' is an "add flow" operation, ofproto removes the new rule or | |
4405 | * restores the original rule. The caller must have uninitialized any | |
4406 | * derived state in the new rule, as in step 5 of in the "Life Cycle" in | |
4407 | * ofproto/ofproto-provider.h. ofoperation_complete() performs steps 6 and | |
4408 | * and 7 for the new rule, calling its ->rule_dealloc() function. | |
4409 | * | |
4410 | * - If 'op' is a "modify flow" operation, ofproto restores the original | |
4411 | * actions. | |
4412 | * | |
4413 | * - 'op' must not be a "delete flow" operation. Removing a rule is not | |
4414 | * allowed to fail. It must always succeed. | |
7ee20df1 | 4415 | * |
5bee6e26 JP |
4416 | * Please see the large comment in ofproto/ofproto-provider.h titled |
4417 | * "Asynchronous Operation Support" for more information. */ | |
7ee20df1 | 4418 | void |
90bf1e07 | 4419 | ofoperation_complete(struct ofoperation *op, enum ofperr error) |
7ee20df1 BP |
4420 | { |
4421 | struct ofopgroup *group = op->group; | |
7ee20df1 | 4422 | |
cb22974d BP |
4423 | ovs_assert(op->rule->pending == op); |
4424 | ovs_assert(group->n_running > 0); | |
4425 | ovs_assert(!error || op->type != OFOPERATION_DELETE); | |
9075907c | 4426 | |
e615b0a3 BP |
4427 | op->error = error; |
4428 | if (!--group->n_running && !list_is_empty(&group->ofproto_node)) { | |
4429 | ofopgroup_complete(group); | |
7ee20df1 | 4430 | } |
7ee20df1 BP |
4431 | } |
4432 | ||
4433 | struct rule * | |
4434 | ofoperation_get_victim(struct ofoperation *op) | |
4435 | { | |
cb22974d | 4436 | ovs_assert(op->type == OFOPERATION_ADD); |
7ee20df1 | 4437 | return op->victim; |
064af421 BP |
4438 | } |
4439 | \f | |
064af421 | 4440 | static uint64_t |
fa60c019 | 4441 | pick_datapath_id(const struct ofproto *ofproto) |
064af421 | 4442 | { |
fa60c019 | 4443 | const struct ofport *port; |
064af421 | 4444 | |
abe529af | 4445 | port = ofproto_get_port(ofproto, OFPP_LOCAL); |
fa60c019 BP |
4446 | if (port) { |
4447 | uint8_t ea[ETH_ADDR_LEN]; | |
4448 | int error; | |
4449 | ||
4450 | error = netdev_get_etheraddr(port->netdev, ea); | |
064af421 BP |
4451 | if (!error) { |
4452 | return eth_addr_to_uint64(ea); | |
4453 | } | |
fbfa2911 BP |
4454 | VLOG_WARN("%s: could not get MAC address for %s (%s)", |
4455 | ofproto->name, netdev_get_name(port->netdev), | |
4456 | strerror(error)); | |
064af421 | 4457 | } |
fa60c019 | 4458 | return ofproto->fallback_dpid; |
064af421 BP |
4459 | } |
4460 | ||
4461 | static uint64_t | |
4462 | pick_fallback_dpid(void) | |
4463 | { | |
4464 | uint8_t ea[ETH_ADDR_LEN]; | |
70150daf | 4465 | eth_addr_nicira_random(ea); |
064af421 BP |
4466 | return eth_addr_to_uint64(ea); |
4467 | } | |
4468 | \f | |
254750ce BP |
4469 | /* Table overflow policy. */ |
4470 | ||
4471 | /* Chooses and returns a rule to evict from 'table'. Returns NULL if the table | |
4472 | * is not configured to evict rules or if the table contains no evictable | |
4473 | * rules. (Rules with 'evictable' set to false or with no timeouts are not | |
4474 | * evictable.) */ | |
4475 | static struct rule * | |
4476 | choose_rule_to_evict(struct oftable *table) | |
4477 | { | |
4478 | struct eviction_group *evg; | |
4479 | ||
4480 | if (!table->eviction_fields) { | |
4481 | return NULL; | |
4482 | } | |
4483 | ||
4484 | /* In the common case, the outer and inner loops here will each be entered | |
4485 | * exactly once: | |
4486 | * | |
4487 | * - The inner loop normally "return"s in its first iteration. If the | |
4488 | * eviction group has any evictable rules, then it always returns in | |
4489 | * some iteration. | |
4490 | * | |
4491 | * - The outer loop only iterates more than once if the largest eviction | |
4492 | * group has no evictable rules. | |
4493 | * | |
4494 | * - The outer loop can exit only if table's 'max_flows' is all filled up | |
4495 | * by unevictable rules'. */ | |
4496 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { | |
4497 | struct rule *rule; | |
4498 | ||
4499 | HEAP_FOR_EACH (rule, evg_node, &evg->rules) { | |
4500 | if (rule->evictable) { | |
4501 | return rule; | |
4502 | } | |
4503 | } | |
4504 | } | |
4505 | ||
4506 | return NULL; | |
4507 | } | |
4508 | ||
4509 | /* Searches 'ofproto' for tables that have more flows than their configured | |
4510 | * maximum and that have flow eviction enabled, and evicts as many flows as | |
4511 | * necessary and currently feasible from them. | |
4512 | * | |
4513 | * This triggers only when an OpenFlow table has N flows in it and then the | |
4514 | * client configures a maximum number of flows less than N. */ | |
4515 | static void | |
4516 | ofproto_evict(struct ofproto *ofproto) | |
4517 | { | |
4518 | struct ofopgroup *group; | |
4519 | struct oftable *table; | |
4520 | ||
4521 | group = ofopgroup_create_unattached(ofproto); | |
4522 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
4523 | while (classifier_count(&table->cls) > table->max_flows | |
4524 | && table->eviction_fields) { | |
4525 | struct rule *rule; | |
4526 | ||
4527 | rule = choose_rule_to_evict(table); | |
4528 | if (!rule || rule->pending) { | |
4529 | break; | |
4530 | } | |
4531 | ||
2b07c8b1 BP |
4532 | ofoperation_create(group, rule, |
4533 | OFOPERATION_DELETE, OFPRR_EVICTION); | |
254750ce BP |
4534 | oftable_remove_rule(rule); |
4535 | ofproto->ofproto_class->rule_destruct(rule); | |
4536 | } | |
4537 | } | |
4538 | ofopgroup_submit(group); | |
4539 | } | |
4540 | \f | |
4541 | /* Eviction groups. */ | |
4542 | ||
4543 | /* Returns the priority to use for an eviction_group that contains 'n_rules' | |
4544 | * rules. The priority contains low-order random bits to ensure that eviction | |
4545 | * groups with the same number of rules are prioritized randomly. */ | |
4546 | static uint32_t | |
4547 | eviction_group_priority(size_t n_rules) | |
4548 | { | |
4549 | uint16_t size = MIN(UINT16_MAX, n_rules); | |
4550 | return (size << 16) | random_uint16(); | |
4551 | } | |
4552 | ||
4553 | /* Updates 'evg', an eviction_group within 'table', following a change that | |
4554 | * adds or removes rules in 'evg'. */ | |
4555 | static void | |
4556 | eviction_group_resized(struct oftable *table, struct eviction_group *evg) | |
4557 | { | |
4558 | heap_change(&table->eviction_groups_by_size, &evg->size_node, | |
4559 | eviction_group_priority(heap_count(&evg->rules))); | |
4560 | } | |
4561 | ||
4562 | /* Destroys 'evg', an eviction_group within 'table': | |
4563 | * | |
4564 | * - Removes all the rules, if any, from 'evg'. (It doesn't destroy the | |
4565 | * rules themselves, just removes them from the eviction group.) | |
4566 | * | |
4567 | * - Removes 'evg' from 'table'. | |
4568 | * | |
4569 | * - Frees 'evg'. */ | |
4570 | static void | |
4571 | eviction_group_destroy(struct oftable *table, struct eviction_group *evg) | |
4572 | { | |
4573 | while (!heap_is_empty(&evg->rules)) { | |
4574 | struct rule *rule; | |
4575 | ||
4576 | rule = CONTAINER_OF(heap_pop(&evg->rules), struct rule, evg_node); | |
4577 | rule->eviction_group = NULL; | |
4578 | } | |
4579 | hmap_remove(&table->eviction_groups_by_id, &evg->id_node); | |
4580 | heap_remove(&table->eviction_groups_by_size, &evg->size_node); | |
4581 | heap_destroy(&evg->rules); | |
4582 | free(evg); | |
4583 | } | |
4584 | ||
4585 | /* Removes 'rule' from its eviction group, if any. */ | |
4586 | static void | |
4587 | eviction_group_remove_rule(struct rule *rule) | |
4588 | { | |
4589 | if (rule->eviction_group) { | |
4590 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
4591 | struct eviction_group *evg = rule->eviction_group; | |
4592 | ||
4593 | rule->eviction_group = NULL; | |
4594 | heap_remove(&evg->rules, &rule->evg_node); | |
4595 | if (heap_is_empty(&evg->rules)) { | |
4596 | eviction_group_destroy(table, evg); | |
4597 | } else { | |
4598 | eviction_group_resized(table, evg); | |
4599 | } | |
4600 | } | |
4601 | } | |
4602 | ||
4603 | /* Hashes the 'rule''s values for the eviction_fields of 'rule''s table, and | |
4604 | * returns the hash value. */ | |
4605 | static uint32_t | |
4606 | eviction_group_hash_rule(struct rule *rule) | |
4607 | { | |
4608 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
4609 | const struct mf_subfield *sf; | |
5cb7a798 | 4610 | struct flow flow; |
254750ce BP |
4611 | uint32_t hash; |
4612 | ||
4613 | hash = table->eviction_group_id_basis; | |
5cb7a798 | 4614 | miniflow_expand(&rule->cr.match.flow, &flow); |
254750ce BP |
4615 | for (sf = table->eviction_fields; |
4616 | sf < &table->eviction_fields[table->n_eviction_fields]; | |
4617 | sf++) | |
4618 | { | |
5cb7a798 | 4619 | if (mf_are_prereqs_ok(sf->field, &flow)) { |
254750ce BP |
4620 | union mf_value value; |
4621 | ||
5cb7a798 | 4622 | mf_get_value(sf->field, &flow, &value); |
254750ce BP |
4623 | if (sf->ofs) { |
4624 | bitwise_zero(&value, sf->field->n_bytes, 0, sf->ofs); | |
4625 | } | |
4626 | if (sf->ofs + sf->n_bits < sf->field->n_bytes * 8) { | |
4627 | unsigned int start = sf->ofs + sf->n_bits; | |
4628 | bitwise_zero(&value, sf->field->n_bytes, start, | |
4629 | sf->field->n_bytes * 8 - start); | |
4630 | } | |
4631 | hash = hash_bytes(&value, sf->field->n_bytes, hash); | |
4632 | } else { | |
4633 | hash = hash_int(hash, 0); | |
4634 | } | |
4635 | } | |
4636 | ||
4637 | return hash; | |
4638 | } | |
4639 | ||
4640 | /* Returns an eviction group within 'table' with the given 'id', creating one | |
4641 | * if necessary. */ | |
4642 | static struct eviction_group * | |
4643 | eviction_group_find(struct oftable *table, uint32_t id) | |
4644 | { | |
4645 | struct eviction_group *evg; | |
4646 | ||
4647 | HMAP_FOR_EACH_WITH_HASH (evg, id_node, id, &table->eviction_groups_by_id) { | |
4648 | return evg; | |
4649 | } | |
4650 | ||
4651 | evg = xmalloc(sizeof *evg); | |
4652 | hmap_insert(&table->eviction_groups_by_id, &evg->id_node, id); | |
4653 | heap_insert(&table->eviction_groups_by_size, &evg->size_node, | |
4654 | eviction_group_priority(0)); | |
4655 | heap_init(&evg->rules); | |
4656 | ||
4657 | return evg; | |
4658 | } | |
4659 | ||
4660 | /* Returns an eviction priority for 'rule'. The return value should be | |
4661 | * interpreted so that higher priorities make a rule more attractive candidates | |
4662 | * for eviction. */ | |
4663 | static uint32_t | |
4664 | rule_eviction_priority(struct rule *rule) | |
4665 | { | |
4666 | long long int hard_expiration; | |
4667 | long long int idle_expiration; | |
4668 | long long int expiration; | |
4669 | uint32_t expiration_offset; | |
4670 | ||
4671 | /* Calculate time of expiration. */ | |
4672 | hard_expiration = (rule->hard_timeout | |
4673 | ? rule->modified + rule->hard_timeout * 1000 | |
4674 | : LLONG_MAX); | |
4675 | idle_expiration = (rule->idle_timeout | |
4676 | ? rule->used + rule->idle_timeout * 1000 | |
4677 | : LLONG_MAX); | |
4678 | expiration = MIN(hard_expiration, idle_expiration); | |
4679 | if (expiration == LLONG_MAX) { | |
4680 | return 0; | |
4681 | } | |
4682 | ||
4683 | /* Calculate the time of expiration as a number of (approximate) seconds | |
4684 | * after program startup. | |
4685 | * | |
4686 | * This should work OK for program runs that last UINT32_MAX seconds or | |
4687 | * less. Therefore, please restart OVS at least once every 136 years. */ | |
4688 | expiration_offset = (expiration >> 10) - (time_boot_msec() >> 10); | |
4689 | ||
4690 | /* Invert the expiration offset because we're using a max-heap. */ | |
4691 | return UINT32_MAX - expiration_offset; | |
4692 | } | |
4693 | ||
4694 | /* Adds 'rule' to an appropriate eviction group for its oftable's | |
4695 | * configuration. Does nothing if 'rule''s oftable doesn't have eviction | |
4696 | * enabled, or if 'rule' is a permanent rule (one that will never expire on its | |
4697 | * own). | |
4698 | * | |
4699 | * The caller must ensure that 'rule' is not already in an eviction group. */ | |
4700 | static void | |
4701 | eviction_group_add_rule(struct rule *rule) | |
4702 | { | |
4703 | struct ofproto *ofproto = rule->ofproto; | |
4704 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
4705 | ||
4706 | if (table->eviction_fields | |
4707 | && (rule->hard_timeout || rule->idle_timeout)) { | |
4708 | struct eviction_group *evg; | |
4709 | ||
4710 | evg = eviction_group_find(table, eviction_group_hash_rule(rule)); | |
4711 | ||
4712 | rule->eviction_group = evg; | |
4713 | heap_insert(&evg->rules, &rule->evg_node, | |
4714 | rule_eviction_priority(rule)); | |
4715 | eviction_group_resized(table, evg); | |
4716 | } | |
4717 | } | |
4718 | \f | |
d0918789 BP |
4719 | /* oftables. */ |
4720 | ||
4721 | /* Initializes 'table'. */ | |
4722 | static void | |
4723 | oftable_init(struct oftable *table) | |
4724 | { | |
5c67e4af | 4725 | memset(table, 0, sizeof *table); |
d0918789 | 4726 | classifier_init(&table->cls); |
ec1c5c7e | 4727 | table->max_flows = UINT_MAX; |
d0918789 BP |
4728 | } |
4729 | ||
254750ce | 4730 | /* Destroys 'table', including its classifier and eviction groups. |
d0918789 BP |
4731 | * |
4732 | * The caller is responsible for freeing 'table' itself. */ | |
4733 | static void | |
4734 | oftable_destroy(struct oftable *table) | |
4735 | { | |
cb22974d | 4736 | ovs_assert(classifier_is_empty(&table->cls)); |
254750ce | 4737 | oftable_disable_eviction(table); |
d0918789 | 4738 | classifier_destroy(&table->cls); |
254750ce BP |
4739 | free(table->name); |
4740 | } | |
4741 | ||
4742 | /* Changes the name of 'table' to 'name'. If 'name' is NULL or the empty | |
4743 | * string, then 'table' will use its default name. | |
4744 | * | |
4745 | * This only affects the name exposed for a table exposed through the OpenFlow | |
4746 | * OFPST_TABLE (as printed by "ovs-ofctl dump-tables"). */ | |
4747 | static void | |
4748 | oftable_set_name(struct oftable *table, const char *name) | |
4749 | { | |
4750 | if (name && name[0]) { | |
4751 | int len = strnlen(name, OFP_MAX_TABLE_NAME_LEN); | |
4752 | if (!table->name || strncmp(name, table->name, len)) { | |
4753 | free(table->name); | |
4754 | table->name = xmemdup0(name, len); | |
4755 | } | |
4756 | } else { | |
4757 | free(table->name); | |
4758 | table->name = NULL; | |
4759 | } | |
4760 | } | |
4761 | ||
4762 | /* oftables support a choice of two policies when adding a rule would cause the | |
4763 | * number of flows in the table to exceed the configured maximum number: either | |
4764 | * they can refuse to add the new flow or they can evict some existing flow. | |
4765 | * This function configures the former policy on 'table'. */ | |
4766 | static void | |
4767 | oftable_disable_eviction(struct oftable *table) | |
4768 | { | |
4769 | if (table->eviction_fields) { | |
4770 | struct eviction_group *evg, *next; | |
4771 | ||
4772 | HMAP_FOR_EACH_SAFE (evg, next, id_node, | |
4773 | &table->eviction_groups_by_id) { | |
4774 | eviction_group_destroy(table, evg); | |
4775 | } | |
4776 | hmap_destroy(&table->eviction_groups_by_id); | |
4777 | heap_destroy(&table->eviction_groups_by_size); | |
4778 | ||
4779 | free(table->eviction_fields); | |
4780 | table->eviction_fields = NULL; | |
4781 | table->n_eviction_fields = 0; | |
4782 | } | |
4783 | } | |
4784 | ||
4785 | /* oftables support a choice of two policies when adding a rule would cause the | |
4786 | * number of flows in the table to exceed the configured maximum number: either | |
4787 | * they can refuse to add the new flow or they can evict some existing flow. | |
4788 | * This function configures the latter policy on 'table', with fairness based | |
4789 | * on the values of the 'n_fields' fields specified in 'fields'. (Specifying | |
4790 | * 'n_fields' as 0 disables fairness.) */ | |
4791 | static void | |
4792 | oftable_enable_eviction(struct oftable *table, | |
4793 | const struct mf_subfield *fields, size_t n_fields) | |
4794 | { | |
4795 | struct cls_cursor cursor; | |
4796 | struct rule *rule; | |
4797 | ||
4798 | if (table->eviction_fields | |
4799 | && n_fields == table->n_eviction_fields | |
4800 | && (!n_fields | |
4801 | || !memcmp(fields, table->eviction_fields, | |
4802 | n_fields * sizeof *fields))) { | |
4803 | /* No change. */ | |
4804 | return; | |
4805 | } | |
4806 | ||
4807 | oftable_disable_eviction(table); | |
4808 | ||
4809 | table->n_eviction_fields = n_fields; | |
4810 | table->eviction_fields = xmemdup(fields, n_fields * sizeof *fields); | |
4811 | ||
4812 | table->eviction_group_id_basis = random_uint32(); | |
4813 | hmap_init(&table->eviction_groups_by_id); | |
4814 | heap_init(&table->eviction_groups_by_size); | |
4815 | ||
4816 | cls_cursor_init(&cursor, &table->cls, NULL); | |
4817 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { | |
4818 | eviction_group_add_rule(rule); | |
4819 | } | |
d0918789 BP |
4820 | } |
4821 | ||
4822 | /* Removes 'rule' from the oftable that contains it. */ | |
4823 | static void | |
4824 | oftable_remove_rule(struct rule *rule) | |
4825 | { | |
4826 | struct ofproto *ofproto = rule->ofproto; | |
4827 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
4828 | ||
4829 | classifier_remove(&table->cls, &rule->cr); | |
254750ce | 4830 | eviction_group_remove_rule(rule); |
d0918789 BP |
4831 | } |
4832 | ||
4833 | /* Inserts 'rule' into its oftable. Removes any existing rule from 'rule''s | |
4834 | * oftable that has an identical cls_rule. Returns the rule that was removed, | |
4835 | * if any, and otherwise NULL. */ | |
4836 | static struct rule * | |
4837 | oftable_replace_rule(struct rule *rule) | |
4838 | { | |
4839 | struct ofproto *ofproto = rule->ofproto; | |
4840 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
254750ce | 4841 | struct rule *victim; |
d0918789 | 4842 | |
254750ce BP |
4843 | victim = rule_from_cls_rule(classifier_replace(&table->cls, &rule->cr)); |
4844 | if (victim) { | |
4845 | eviction_group_remove_rule(victim); | |
4846 | } | |
4847 | eviction_group_add_rule(rule); | |
4848 | return victim; | |
d0918789 BP |
4849 | } |
4850 | ||
4851 | /* Removes 'old' from its oftable then, if 'new' is nonnull, inserts 'new'. */ | |
4852 | static void | |
4853 | oftable_substitute_rule(struct rule *old, struct rule *new) | |
4854 | { | |
4855 | if (new) { | |
4856 | oftable_replace_rule(new); | |
4857 | } else { | |
4858 | oftable_remove_rule(old); | |
4859 | } | |
4860 | } | |
4861 | \f | |
abe529af | 4862 | /* unixctl commands. */ |
7aa697dd | 4863 | |
abe529af | 4864 | struct ofproto * |
2ac6bedd | 4865 | ofproto_lookup(const char *name) |
7aa697dd | 4866 | { |
2ac6bedd | 4867 | struct ofproto *ofproto; |
7aa697dd | 4868 | |
2ac6bedd BP |
4869 | HMAP_FOR_EACH_WITH_HASH (ofproto, hmap_node, hash_string(name, 0), |
4870 | &all_ofprotos) { | |
4871 | if (!strcmp(ofproto->name, name)) { | |
4872 | return ofproto; | |
4873 | } | |
7aa697dd | 4874 | } |
2ac6bedd | 4875 | return NULL; |
7aa697dd BP |
4876 | } |
4877 | ||
4878 | static void | |
0e15264f BP |
4879 | ofproto_unixctl_list(struct unixctl_conn *conn, int argc OVS_UNUSED, |
4880 | const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED) | |
7aa697dd | 4881 | { |
7aa697dd | 4882 | struct ofproto *ofproto; |
7aa697dd | 4883 | struct ds results; |
7aa697dd | 4884 | |
7aa697dd | 4885 | ds_init(&results); |
2ac6bedd BP |
4886 | HMAP_FOR_EACH (ofproto, hmap_node, &all_ofprotos) { |
4887 | ds_put_format(&results, "%s\n", ofproto->name); | |
7aa697dd | 4888 | } |
bde9f75d | 4889 | unixctl_command_reply(conn, ds_cstr(&results)); |
7aa697dd | 4890 | ds_destroy(&results); |
7aa697dd BP |
4891 | } |
4892 | ||
4893 | static void | |
4894 | ofproto_unixctl_init(void) | |
4895 | { | |
4896 | static bool registered; | |
4897 | if (registered) { | |
4898 | return; | |
4899 | } | |
4900 | registered = true; | |
4901 | ||
0e15264f BP |
4902 | unixctl_command_register("ofproto/list", "", 0, 0, |
4903 | ofproto_unixctl_list, NULL); | |
064af421 | 4904 | } |
52a90c29 BP |
4905 | \f |
4906 | /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.) | |
4907 | * | |
4908 | * This is deprecated. It is only for compatibility with broken device drivers | |
4909 | * in old versions of Linux that do not properly support VLANs when VLAN | |
4910 | * devices are not used. When broken device drivers are no longer in | |
4911 | * widespread use, we will delete these interfaces. */ | |
4912 | ||
4913 | /* Sets a 1-bit in the 4096-bit 'vlan_bitmap' for each VLAN ID that is matched | |
4914 | * (exactly) by an OpenFlow rule in 'ofproto'. */ | |
4915 | void | |
4916 | ofproto_get_vlan_usage(struct ofproto *ofproto, unsigned long int *vlan_bitmap) | |
4917 | { | |
d0918789 | 4918 | const struct oftable *oftable; |
52a90c29 BP |
4919 | |
4920 | free(ofproto->vlan_bitmap); | |
4921 | ofproto->vlan_bitmap = bitmap_allocate(4096); | |
4922 | ofproto->vlans_changed = false; | |
4923 | ||
d0918789 | 4924 | OFPROTO_FOR_EACH_TABLE (oftable, ofproto) { |
52a90c29 BP |
4925 | const struct cls_table *table; |
4926 | ||
d0918789 | 4927 | HMAP_FOR_EACH (table, hmap_node, &oftable->cls.tables) { |
5cb7a798 | 4928 | if (minimask_get_vid_mask(&table->mask) == VLAN_VID_MASK) { |
52a90c29 BP |
4929 | const struct cls_rule *rule; |
4930 | ||
4931 | HMAP_FOR_EACH (rule, hmap_node, &table->rules) { | |
5cb7a798 | 4932 | uint16_t vid = miniflow_get_vid(&rule->match.flow); |
52a90c29 BP |
4933 | bitmap_set1(vlan_bitmap, vid); |
4934 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
4935 | } | |
4936 | } | |
4937 | } | |
4938 | } | |
4939 | } | |
4940 | ||
4941 | /* Returns true if new VLANs have come into use by the flow table since the | |
4942 | * last call to ofproto_get_vlan_usage(). | |
4943 | * | |
4944 | * We don't track when old VLANs stop being used. */ | |
4945 | bool | |
4946 | ofproto_has_vlan_usage_changed(const struct ofproto *ofproto) | |
4947 | { | |
4948 | return ofproto->vlans_changed; | |
4949 | } | |
4950 | ||
4951 | /* Configures a VLAN splinter binding between the ports identified by OpenFlow | |
4952 | * port numbers 'vlandev_ofp_port' and 'realdev_ofp_port'. If | |
4953 | * 'realdev_ofp_port' is nonzero, then the VLAN device is enslaved to the real | |
4954 | * device as a VLAN splinter for VLAN ID 'vid'. If 'realdev_ofp_port' is zero, | |
4955 | * then the VLAN device is un-enslaved. */ | |
4956 | int | |
4957 | ofproto_port_set_realdev(struct ofproto *ofproto, uint16_t vlandev_ofp_port, | |
4958 | uint16_t realdev_ofp_port, int vid) | |
4959 | { | |
4960 | struct ofport *ofport; | |
4961 | int error; | |
4962 | ||
cb22974d | 4963 | ovs_assert(vlandev_ofp_port != realdev_ofp_port); |
52a90c29 BP |
4964 | |
4965 | ofport = ofproto_get_port(ofproto, vlandev_ofp_port); | |
4966 | if (!ofport) { | |
4967 | VLOG_WARN("%s: cannot set realdev on nonexistent port %"PRIu16, | |
4968 | ofproto->name, vlandev_ofp_port); | |
4969 | return EINVAL; | |
4970 | } | |
4971 | ||
4972 | if (!ofproto->ofproto_class->set_realdev) { | |
4973 | if (!vlandev_ofp_port) { | |
4974 | return 0; | |
4975 | } | |
4976 | VLOG_WARN("%s: vlan splinters not supported", ofproto->name); | |
4977 | return EOPNOTSUPP; | |
4978 | } | |
4979 | ||
4980 | error = ofproto->ofproto_class->set_realdev(ofport, realdev_ofp_port, vid); | |
4981 | if (error) { | |
4982 | VLOG_WARN("%s: setting realdev on port %"PRIu16" (%s) failed (%s)", | |
4983 | ofproto->name, vlandev_ofp_port, | |
4984 | netdev_get_name(ofport->netdev), strerror(error)); | |
4985 | } | |
4986 | return error; | |
4987 | } |