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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; | |
9cae45dc | 129 | uint32_t meter_id; |
08043761 | 130 | |
2b07c8b1 BP |
131 | /* OFOPERATION_DELETE. */ |
132 | enum ofp_flow_removed_reason reason; /* Reason flow was removed. */ | |
133 | ||
7ee20df1 | 134 | ovs_be64 flow_cookie; /* Rule's old flow cookie. */ |
e615b0a3 | 135 | enum ofperr error; /* 0 if no error. */ |
7ee20df1 BP |
136 | }; |
137 | ||
a7d94793 BP |
138 | static struct ofoperation *ofoperation_create(struct ofopgroup *, |
139 | struct rule *, | |
2b07c8b1 BP |
140 | enum ofoperation_type, |
141 | enum ofp_flow_removed_reason); | |
7ee20df1 BP |
142 | static void ofoperation_destroy(struct ofoperation *); |
143 | ||
d0918789 BP |
144 | /* oftable. */ |
145 | static void oftable_init(struct oftable *); | |
146 | static void oftable_destroy(struct oftable *); | |
878ae780 | 147 | |
254750ce BP |
148 | static void oftable_set_name(struct oftable *, const char *name); |
149 | ||
150 | static void oftable_disable_eviction(struct oftable *); | |
151 | static void oftable_enable_eviction(struct oftable *, | |
152 | const struct mf_subfield *fields, | |
153 | size_t n_fields); | |
154 | ||
d0918789 BP |
155 | static void oftable_remove_rule(struct rule *); |
156 | static struct rule *oftable_replace_rule(struct rule *); | |
157 | static void oftable_substitute_rule(struct rule *old, struct rule *new); | |
064af421 | 158 | |
254750ce BP |
159 | /* A set of rules within a single OpenFlow table (oftable) that have the same |
160 | * values for the oftable's eviction_fields. A rule to be evicted, when one is | |
161 | * needed, is taken from the eviction group that contains the greatest number | |
162 | * of rules. | |
163 | * | |
164 | * An oftable owns any number of eviction groups, each of which contains any | |
165 | * number of rules. | |
166 | * | |
167 | * Membership in an eviction group is imprecise, based on the hash of the | |
168 | * oftable's eviction_fields (in the eviction_group's id_node.hash member). | |
169 | * That is, if two rules have different eviction_fields, but those | |
170 | * eviction_fields hash to the same value, then they will belong to the same | |
171 | * eviction_group anyway. | |
172 | * | |
173 | * (When eviction is not enabled on an oftable, we don't track any eviction | |
174 | * groups, to save time and space.) */ | |
175 | struct eviction_group { | |
176 | struct hmap_node id_node; /* In oftable's "eviction_groups_by_id". */ | |
177 | struct heap_node size_node; /* In oftable's "eviction_groups_by_size". */ | |
178 | struct heap rules; /* Contains "struct rule"s. */ | |
179 | }; | |
180 | ||
181 | static struct rule *choose_rule_to_evict(struct oftable *); | |
182 | static void ofproto_evict(struct ofproto *); | |
183 | static uint32_t rule_eviction_priority(struct rule *); | |
f29152ca | 184 | |
d0918789 BP |
185 | /* ofport. */ |
186 | static void ofport_destroy__(struct ofport *); | |
187 | static void ofport_destroy(struct ofport *); | |
188 | ||
189 | static void update_port(struct ofproto *, const char *devname); | |
190 | static int init_ports(struct ofproto *); | |
191 | static void reinit_ports(struct ofproto *); | |
7ee20df1 | 192 | |
254750ce BP |
193 | /* rule. */ |
194 | static void ofproto_rule_destroy__(struct rule *); | |
195 | static void ofproto_rule_send_removed(struct rule *, uint8_t reason); | |
196 | static bool rule_is_modifiable(const struct rule *); | |
254750ce | 197 | |
d0918789 | 198 | /* OpenFlow. */ |
90bf1e07 | 199 | static enum ofperr add_flow(struct ofproto *, struct ofconn *, |
e3b56933 | 200 | struct ofputil_flow_mod *, |
90bf1e07 | 201 | const struct ofp_header *); |
ca311b2f JR |
202 | static void delete_flow__(struct rule *, struct ofopgroup *, |
203 | enum ofp_flow_removed_reason); | |
e03248b7 | 204 | static bool handle_openflow(struct ofconn *, const struct ofpbuf *); |
90bf1e07 | 205 | static enum ofperr handle_flow_mod__(struct ofproto *, struct ofconn *, |
e3b56933 | 206 | struct ofputil_flow_mod *, |
d0918789 | 207 | const struct ofp_header *); |
65e0be10 BP |
208 | static void calc_duration(long long int start, long long int now, |
209 | uint32_t *sec, uint32_t *nsec); | |
f29152ca | 210 | |
d0918789 BP |
211 | /* ofproto. */ |
212 | static uint64_t pick_datapath_id(const struct ofproto *); | |
213 | static uint64_t pick_fallback_dpid(void); | |
214 | static void ofproto_destroy__(struct ofproto *); | |
ada3428f | 215 | static void update_mtu(struct ofproto *, struct ofport *); |
6b3f7f02 | 216 | static void meter_delete(struct ofproto *, uint32_t first, uint32_t last); |
f29152ca | 217 | |
d0918789 | 218 | /* unixctl. */ |
abe529af | 219 | static void ofproto_unixctl_init(void); |
f29152ca | 220 | |
abe529af BP |
221 | /* All registered ofproto classes, in probe order. */ |
222 | static const struct ofproto_class **ofproto_classes; | |
223 | static size_t n_ofproto_classes; | |
224 | static size_t allocated_ofproto_classes; | |
7aa697dd | 225 | |
380f49c4 | 226 | unsigned flow_eviction_threshold = OFPROTO_FLOW_EVICTION_THRESHOLD_DEFAULT; |
7155fa52 | 227 | enum ofproto_flow_miss_model flow_miss_model = OFPROTO_HANDLE_MISS_AUTO; |
380f49c4 | 228 | |
f797957a | 229 | /* Map from datapath name to struct ofproto, for use by unixctl commands. */ |
abe529af | 230 | static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos); |
ebe482fd | 231 | |
e1b1d06a JP |
232 | /* Initial mappings of port to OpenFlow number mappings. */ |
233 | static struct shash init_ofp_ports = SHASH_INITIALIZER(&init_ofp_ports); | |
234 | ||
abe529af | 235 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
f29152ca | 236 | |
40358701 GS |
237 | /* The default value of true waits for flow restore. */ |
238 | static bool flow_restore_wait = true; | |
239 | ||
b0408fca JP |
240 | /* Must be called to initialize the ofproto library. |
241 | * | |
242 | * The caller may pass in 'iface_hints', which contains an shash of | |
243 | * "iface_hint" elements indexed by the interface's name. The provider | |
244 | * may use these hints to describe the startup configuration in order to | |
245 | * reinitialize its state. The caller owns the provided data, so a | |
246 | * provider will make copies of anything required. An ofproto provider | |
247 | * will remove any existing state that is not described by the hint, and | |
248 | * may choose to remove it all. */ | |
249 | void | |
250 | ofproto_init(const struct shash *iface_hints) | |
abe529af | 251 | { |
e1b1d06a | 252 | struct shash_node *node; |
b0408fca | 253 | size_t i; |
f29152ca | 254 | |
b0408fca JP |
255 | ofproto_class_register(&ofproto_dpif_class); |
256 | ||
e1b1d06a JP |
257 | /* Make a local copy, since we don't own 'iface_hints' elements. */ |
258 | SHASH_FOR_EACH(node, iface_hints) { | |
259 | const struct iface_hint *orig_hint = node->data; | |
260 | struct iface_hint *new_hint = xmalloc(sizeof *new_hint); | |
261 | const char *br_type = ofproto_normalize_type(orig_hint->br_type); | |
262 | ||
263 | new_hint->br_name = xstrdup(orig_hint->br_name); | |
264 | new_hint->br_type = xstrdup(br_type); | |
265 | new_hint->ofp_port = orig_hint->ofp_port; | |
266 | ||
267 | shash_add(&init_ofp_ports, node->name, new_hint); | |
268 | } | |
269 | ||
b0408fca | 270 | for (i = 0; i < n_ofproto_classes; i++) { |
e1b1d06a | 271 | ofproto_classes[i]->init(&init_ofp_ports); |
abe529af BP |
272 | } |
273 | } | |
f29152ca | 274 | |
abe529af BP |
275 | /* 'type' should be a normalized datapath type, as returned by |
276 | * ofproto_normalize_type(). Returns the corresponding ofproto_class | |
277 | * structure, or a null pointer if there is none registered for 'type'. */ | |
278 | static const struct ofproto_class * | |
279 | ofproto_class_find__(const char *type) | |
280 | { | |
281 | size_t i; | |
f29152ca | 282 | |
abe529af BP |
283 | for (i = 0; i < n_ofproto_classes; i++) { |
284 | const struct ofproto_class *class = ofproto_classes[i]; | |
285 | struct sset types; | |
286 | bool found; | |
064af421 | 287 | |
abe529af BP |
288 | sset_init(&types); |
289 | class->enumerate_types(&types); | |
290 | found = sset_contains(&types, type); | |
291 | sset_destroy(&types); | |
bcf84111 | 292 | |
abe529af BP |
293 | if (found) { |
294 | return class; | |
295 | } | |
296 | } | |
297 | VLOG_WARN("unknown datapath type %s", type); | |
298 | return NULL; | |
299 | } | |
064af421 | 300 | |
abe529af BP |
301 | /* Registers a new ofproto class. After successful registration, new ofprotos |
302 | * of that type can be created using ofproto_create(). */ | |
303 | int | |
304 | ofproto_class_register(const struct ofproto_class *new_class) | |
305 | { | |
306 | size_t i; | |
7aa697dd | 307 | |
abe529af BP |
308 | for (i = 0; i < n_ofproto_classes; i++) { |
309 | if (ofproto_classes[i] == new_class) { | |
310 | return EEXIST; | |
311 | } | |
312 | } | |
064af421 | 313 | |
abe529af BP |
314 | if (n_ofproto_classes >= allocated_ofproto_classes) { |
315 | ofproto_classes = x2nrealloc(ofproto_classes, | |
316 | &allocated_ofproto_classes, | |
317 | sizeof *ofproto_classes); | |
318 | } | |
319 | ofproto_classes[n_ofproto_classes++] = new_class; | |
320 | return 0; | |
321 | } | |
064af421 | 322 | |
abe529af BP |
323 | /* Unregisters a datapath provider. 'type' must have been previously |
324 | * registered and not currently be in use by any ofprotos. After | |
325 | * unregistration new datapaths of that type cannot be opened using | |
326 | * ofproto_create(). */ | |
327 | int | |
328 | ofproto_class_unregister(const struct ofproto_class *class) | |
329 | { | |
330 | size_t i; | |
76ce9432 | 331 | |
abe529af BP |
332 | for (i = 0; i < n_ofproto_classes; i++) { |
333 | if (ofproto_classes[i] == class) { | |
334 | for (i++; i < n_ofproto_classes; i++) { | |
335 | ofproto_classes[i - 1] = ofproto_classes[i]; | |
336 | } | |
337 | n_ofproto_classes--; | |
338 | return 0; | |
339 | } | |
340 | } | |
341 | VLOG_WARN("attempted to unregister an ofproto class that is not " | |
342 | "registered"); | |
343 | return EAFNOSUPPORT; | |
344 | } | |
4a4cdb3b | 345 | |
f79e673f BP |
346 | /* Clears 'types' and enumerates all registered ofproto types into it. The |
347 | * caller must first initialize the sset. */ | |
348 | void | |
349 | ofproto_enumerate_types(struct sset *types) | |
350 | { | |
abe529af | 351 | size_t i; |
064af421 | 352 | |
abe529af BP |
353 | for (i = 0; i < n_ofproto_classes; i++) { |
354 | ofproto_classes[i]->enumerate_types(types); | |
355 | } | |
f79e673f | 356 | } |
064af421 | 357 | |
f79e673f BP |
358 | /* Returns the fully spelled out name for the given ofproto 'type'. |
359 | * | |
360 | * Normalized type string can be compared with strcmp(). Unnormalized type | |
361 | * string might be the same even if they have different spellings. */ | |
362 | const char * | |
363 | ofproto_normalize_type(const char *type) | |
364 | { | |
abe529af | 365 | return type && type[0] ? type : "system"; |
f79e673f | 366 | } |
064af421 | 367 | |
f79e673f BP |
368 | /* Clears 'names' and enumerates the names of all known created ofprotos with |
369 | * the given 'type'. The caller must first initialize the sset. Returns 0 if | |
370 | * successful, otherwise a positive errno value. | |
371 | * | |
372 | * Some kinds of datapaths might not be practically enumerable. This is not | |
373 | * considered an error. */ | |
374 | int | |
375 | ofproto_enumerate_names(const char *type, struct sset *names) | |
376 | { | |
abe529af BP |
377 | const struct ofproto_class *class = ofproto_class_find__(type); |
378 | return class ? class->enumerate_names(type, names) : EAFNOSUPPORT; | |
379 | } | |
7aa697dd | 380 | |
064af421 | 381 | int |
abe529af | 382 | ofproto_create(const char *datapath_name, const char *datapath_type, |
064af421 BP |
383 | struct ofproto **ofprotop) |
384 | { | |
abe529af BP |
385 | const struct ofproto_class *class; |
386 | struct ofproto *ofproto; | |
064af421 | 387 | int error; |
c2f0373a | 388 | int i; |
064af421 BP |
389 | |
390 | *ofprotop = NULL; | |
391 | ||
7aa697dd BP |
392 | ofproto_unixctl_init(); |
393 | ||
abe529af BP |
394 | datapath_type = ofproto_normalize_type(datapath_type); |
395 | class = ofproto_class_find__(datapath_type); | |
396 | if (!class) { | |
397 | VLOG_WARN("could not create datapath %s of unknown type %s", | |
398 | datapath_name, datapath_type); | |
399 | return EAFNOSUPPORT; | |
064af421 BP |
400 | } |
401 | ||
abe529af BP |
402 | ofproto = class->alloc(); |
403 | if (!ofproto) { | |
404 | VLOG_ERR("failed to allocate datapath %s of type %s", | |
405 | datapath_name, datapath_type); | |
406 | return ENOMEM; | |
407 | } | |
408 | ||
409 | /* Initialize. */ | |
410 | memset(ofproto, 0, sizeof *ofproto); | |
411 | ofproto->ofproto_class = class; | |
412 | ofproto->name = xstrdup(datapath_name); | |
413 | ofproto->type = xstrdup(datapath_type); | |
414 | hmap_insert(&all_ofprotos, &ofproto->hmap_node, | |
415 | hash_string(ofproto->name, 0)); | |
416 | ofproto->datapath_id = 0; | |
8402c74b | 417 | ofproto->forward_bpdu = false; |
abe529af | 418 | ofproto->fallback_dpid = pick_fallback_dpid(); |
061bfea4 BP |
419 | ofproto->mfr_desc = NULL; |
420 | ofproto->hw_desc = NULL; | |
421 | ofproto->sw_desc = NULL; | |
422 | ofproto->serial_desc = NULL; | |
423 | ofproto->dp_desc = NULL; | |
7257b535 | 424 | ofproto->frag_handling = OFPC_FRAG_NORMAL; |
abe529af BP |
425 | hmap_init(&ofproto->ports); |
426 | shash_init(&ofproto->port_by_name); | |
e1b1d06a | 427 | simap_init(&ofproto->ofp_requests); |
91858960 | 428 | ofproto->max_ports = OFPP_MAX; |
6c1491fb BP |
429 | ofproto->tables = NULL; |
430 | ofproto->n_tables = 0; | |
98eaac36 | 431 | hindex_init(&ofproto->cookies); |
e503cc19 | 432 | list_init(&ofproto->expirable); |
83b16b98 | 433 | ovs_mutex_init(&ofproto->expirable_mutex, PTHREAD_MUTEX_RECURSIVE); |
abe529af | 434 | ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name); |
7ee20df1 BP |
435 | ofproto->state = S_OPENFLOW; |
436 | list_init(&ofproto->pending); | |
dd5616b3 | 437 | ofproto->n_pending = 0; |
7ee20df1 | 438 | hmap_init(&ofproto->deletions); |
a5b8d268 BP |
439 | ofproto->n_add = ofproto->n_delete = ofproto->n_modify = 0; |
440 | ofproto->first_op = ofproto->last_op = LLONG_MIN; | |
441 | ofproto->next_op_report = LLONG_MAX; | |
442 | ofproto->op_backoff = LLONG_MIN; | |
52a90c29 BP |
443 | ofproto->vlan_bitmap = NULL; |
444 | ofproto->vlans_changed = false; | |
ada3428f | 445 | ofproto->min_mtu = INT_MAX; |
abe529af | 446 | |
0f5f95a9 | 447 | error = ofproto->ofproto_class->construct(ofproto); |
19a87e36 | 448 | if (error) { |
abe529af | 449 | VLOG_ERR("failed to open datapath %s: %s", |
10a89ef0 | 450 | datapath_name, ovs_strerror(error)); |
abe529af | 451 | ofproto_destroy__(ofproto); |
19a87e36 BP |
452 | return error; |
453 | } | |
073e2a6f | 454 | |
e1b1d06a JP |
455 | /* The "max_ports" member should have been set by ->construct(ofproto). |
456 | * Port 0 is not a valid OpenFlow port, so mark that as unavailable. */ | |
4e022ec0 | 457 | ofproto->ofp_port_ids = bitmap_allocate(ofp_to_u16(ofproto->max_ports)); |
e1b1d06a JP |
458 | bitmap_set1(ofproto->ofp_port_ids, 0); |
459 | ||
c2f0373a | 460 | /* Check that hidden tables, if any, are at the end. */ |
cb22974d | 461 | ovs_assert(ofproto->n_tables); |
c2f0373a BP |
462 | for (i = 0; i + 1 < ofproto->n_tables; i++) { |
463 | enum oftable_flags flags = ofproto->tables[i].flags; | |
464 | enum oftable_flags next_flags = ofproto->tables[i + 1].flags; | |
465 | ||
cb22974d | 466 | ovs_assert(!(flags & OFTABLE_HIDDEN) || next_flags & OFTABLE_HIDDEN); |
c2f0373a | 467 | } |
19a87e36 | 468 | |
abe529af | 469 | ofproto->datapath_id = pick_datapath_id(ofproto); |
abe529af | 470 | init_ports(ofproto); |
7aa697dd | 471 | |
9cae45dc JR |
472 | /* Initialize meters table. */ |
473 | if (ofproto->ofproto_class->meter_get_features) { | |
474 | ofproto->ofproto_class->meter_get_features(ofproto, | |
475 | &ofproto->meter_features); | |
476 | } else { | |
477 | memset(&ofproto->meter_features, 0, sizeof ofproto->meter_features); | |
478 | } | |
479 | ofproto->meters = xzalloc((ofproto->meter_features.max_meters + 1) | |
480 | * sizeof(struct meter *)); | |
481 | ||
abe529af | 482 | *ofprotop = ofproto; |
064af421 BP |
483 | return 0; |
484 | } | |
485 | ||
91858960 BP |
486 | /* Must be called (only) by an ofproto implementation in its constructor |
487 | * function. See the large comment on 'construct' in struct ofproto_class for | |
488 | * details. */ | |
0f5f95a9 BP |
489 | void |
490 | ofproto_init_tables(struct ofproto *ofproto, int n_tables) | |
491 | { | |
492 | struct oftable *table; | |
493 | ||
cb22974d BP |
494 | ovs_assert(!ofproto->n_tables); |
495 | ovs_assert(n_tables >= 1 && n_tables <= 255); | |
0f5f95a9 BP |
496 | |
497 | ofproto->n_tables = n_tables; | |
498 | ofproto->tables = xmalloc(n_tables * sizeof *ofproto->tables); | |
499 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
500 | oftable_init(table); | |
501 | } | |
502 | } | |
503 | ||
91858960 BP |
504 | /* To be optionally called (only) by an ofproto implementation in its |
505 | * constructor function. See the large comment on 'construct' in struct | |
506 | * ofproto_class for details. | |
507 | * | |
508 | * Sets the maximum number of ports to 'max_ports'. The ofproto generic layer | |
509 | * will then ensure that actions passed into the ofproto implementation will | |
510 | * not refer to OpenFlow ports numbered 'max_ports' or higher. If this | |
511 | * function is not called, there will be no such restriction. | |
512 | * | |
513 | * Reserved ports numbered OFPP_MAX and higher are special and not subject to | |
514 | * the 'max_ports' restriction. */ | |
515 | void | |
4e022ec0 | 516 | ofproto_init_max_ports(struct ofproto *ofproto, ofp_port_t max_ports) |
91858960 | 517 | { |
4e022ec0 | 518 | ovs_assert(ofp_to_u16(max_ports) <= ofp_to_u16(OFPP_MAX)); |
91858960 BP |
519 | ofproto->max_ports = max_ports; |
520 | } | |
521 | ||
e825ace2 BP |
522 | uint64_t |
523 | ofproto_get_datapath_id(const struct ofproto *ofproto) | |
524 | { | |
525 | return ofproto->datapath_id; | |
526 | } | |
527 | ||
064af421 BP |
528 | void |
529 | ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id) | |
530 | { | |
531 | uint64_t old_dpid = p->datapath_id; | |
fa60c019 | 532 | p->datapath_id = datapath_id ? datapath_id : pick_datapath_id(p); |
064af421 | 533 | if (p->datapath_id != old_dpid) { |
76ce9432 BP |
534 | /* Force all active connections to reconnect, since there is no way to |
535 | * notify a controller that the datapath ID has changed. */ | |
fa05809b | 536 | ofproto_reconnect_controllers(p); |
064af421 BP |
537 | } |
538 | } | |
539 | ||
76ce9432 BP |
540 | void |
541 | ofproto_set_controllers(struct ofproto *p, | |
542 | const struct ofproto_controller *controllers, | |
1d9ffc17 | 543 | size_t n_controllers, uint32_t allowed_versions) |
76ce9432 | 544 | { |
1d9ffc17 SH |
545 | connmgr_set_controllers(p->connmgr, controllers, n_controllers, |
546 | allowed_versions); | |
064af421 BP |
547 | } |
548 | ||
31681a5d JP |
549 | void |
550 | ofproto_set_fail_mode(struct ofproto *p, enum ofproto_fail_mode fail_mode) | |
551 | { | |
19a87e36 | 552 | connmgr_set_fail_mode(p->connmgr, fail_mode); |
31681a5d JP |
553 | } |
554 | ||
fa05809b BP |
555 | /* Drops the connections between 'ofproto' and all of its controllers, forcing |
556 | * them to reconnect. */ | |
557 | void | |
558 | ofproto_reconnect_controllers(struct ofproto *ofproto) | |
559 | { | |
19a87e36 | 560 | connmgr_reconnect(ofproto->connmgr); |
917e50e1 BP |
561 | } |
562 | ||
563 | /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s | |
564 | * in-band control should guarantee access, in the same way that in-band | |
565 | * control guarantees access to OpenFlow controllers. */ | |
566 | void | |
567 | ofproto_set_extra_in_band_remotes(struct ofproto *ofproto, | |
568 | const struct sockaddr_in *extras, size_t n) | |
569 | { | |
19a87e36 | 570 | connmgr_set_extra_in_band_remotes(ofproto->connmgr, extras, n); |
917e50e1 BP |
571 | } |
572 | ||
b1da6250 BP |
573 | /* Sets the OpenFlow queue used by flows set up by in-band control on |
574 | * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control | |
575 | * flows will use the default queue. */ | |
576 | void | |
577 | ofproto_set_in_band_queue(struct ofproto *ofproto, int queue_id) | |
578 | { | |
19a87e36 | 579 | connmgr_set_in_band_queue(ofproto->connmgr, queue_id); |
b1da6250 BP |
580 | } |
581 | ||
084f5290 SH |
582 | /* Sets the number of flows at which eviction from the kernel flow table |
583 | * will occur. */ | |
584 | void | |
380f49c4 | 585 | ofproto_set_flow_eviction_threshold(unsigned threshold) |
084f5290 | 586 | { |
380f49c4 EJ |
587 | flow_eviction_threshold = MAX(OFPROTO_FLOW_EVICTION_THRESHOLD_MIN, |
588 | threshold); | |
084f5290 SH |
589 | } |
590 | ||
7155fa52 JS |
591 | /* Sets the path for handling flow misses. */ |
592 | void | |
593 | ofproto_set_flow_miss_model(unsigned model) | |
594 | { | |
595 | flow_miss_model = model; | |
596 | } | |
597 | ||
b53055f4 | 598 | /* If forward_bpdu is true, the NORMAL action will forward frames with |
8402c74b SS |
599 | * reserved (e.g. STP) destination Ethernet addresses. if forward_bpdu is false, |
600 | * the NORMAL action will drop these frames. */ | |
601 | void | |
602 | ofproto_set_forward_bpdu(struct ofproto *ofproto, bool forward_bpdu) | |
603 | { | |
604 | bool old_val = ofproto->forward_bpdu; | |
605 | ofproto->forward_bpdu = forward_bpdu; | |
606 | if (old_val != ofproto->forward_bpdu) { | |
607 | if (ofproto->ofproto_class->forward_bpdu_changed) { | |
608 | ofproto->ofproto_class->forward_bpdu_changed(ofproto); | |
609 | } | |
b53055f4 | 610 | } |
8402c74b SS |
611 | } |
612 | ||
e764773c | 613 | /* Sets the MAC aging timeout for the OFPP_NORMAL action on 'ofproto' to |
c4069512 BP |
614 | * 'idle_time', in seconds, and the maximum number of MAC table entries to |
615 | * 'max_entries'. */ | |
e764773c | 616 | void |
c4069512 BP |
617 | ofproto_set_mac_table_config(struct ofproto *ofproto, unsigned idle_time, |
618 | size_t max_entries) | |
e764773c | 619 | { |
c4069512 BP |
620 | if (ofproto->ofproto_class->set_mac_table_config) { |
621 | ofproto->ofproto_class->set_mac_table_config(ofproto, idle_time, | |
622 | max_entries); | |
e764773c BP |
623 | } |
624 | } | |
625 | ||
8b6ff729 BP |
626 | void |
627 | ofproto_set_dp_desc(struct ofproto *p, const char *dp_desc) | |
628 | { | |
629 | free(p->dp_desc); | |
630 | p->dp_desc = dp_desc ? xstrdup(dp_desc) : NULL; | |
631 | } | |
632 | ||
064af421 | 633 | int |
81e2083f | 634 | ofproto_set_snoops(struct ofproto *ofproto, const struct sset *snoops) |
064af421 | 635 | { |
19a87e36 | 636 | return connmgr_set_snoops(ofproto->connmgr, snoops); |
064af421 BP |
637 | } |
638 | ||
639 | int | |
0193b2af JG |
640 | ofproto_set_netflow(struct ofproto *ofproto, |
641 | const struct netflow_options *nf_options) | |
064af421 | 642 | { |
abe529af BP |
643 | if (nf_options && sset_is_empty(&nf_options->collectors)) { |
644 | nf_options = NULL; | |
645 | } | |
646 | ||
647 | if (ofproto->ofproto_class->set_netflow) { | |
648 | return ofproto->ofproto_class->set_netflow(ofproto, nf_options); | |
064af421 | 649 | } else { |
abe529af | 650 | return nf_options ? EOPNOTSUPP : 0; |
064af421 BP |
651 | } |
652 | } | |
653 | ||
abe529af | 654 | int |
72b06300 BP |
655 | ofproto_set_sflow(struct ofproto *ofproto, |
656 | const struct ofproto_sflow_options *oso) | |
657 | { | |
abe529af BP |
658 | if (oso && sset_is_empty(&oso->targets)) { |
659 | oso = NULL; | |
660 | } | |
72b06300 | 661 | |
abe529af BP |
662 | if (ofproto->ofproto_class->set_sflow) { |
663 | return ofproto->ofproto_class->set_sflow(ofproto, oso); | |
72b06300 | 664 | } else { |
abe529af | 665 | return oso ? EOPNOTSUPP : 0; |
72b06300 BP |
666 | } |
667 | } | |
29089a54 RL |
668 | |
669 | int | |
670 | ofproto_set_ipfix(struct ofproto *ofproto, | |
671 | const struct ofproto_ipfix_bridge_exporter_options *bo, | |
672 | const struct ofproto_ipfix_flow_exporter_options *fo, | |
673 | size_t n_fo) | |
674 | { | |
675 | if (ofproto->ofproto_class->set_ipfix) { | |
676 | return ofproto->ofproto_class->set_ipfix(ofproto, bo, fo, n_fo); | |
677 | } else { | |
678 | return (bo || fo) ? EOPNOTSUPP : 0; | |
679 | } | |
680 | } | |
40358701 GS |
681 | |
682 | void | |
683 | ofproto_set_flow_restore_wait(bool flow_restore_wait_db) | |
684 | { | |
685 | flow_restore_wait = flow_restore_wait_db; | |
686 | } | |
687 | ||
688 | bool | |
689 | ofproto_get_flow_restore_wait(void) | |
690 | { | |
691 | return flow_restore_wait; | |
692 | } | |
693 | ||
e7934396 | 694 | \f |
21f7563c JP |
695 | /* Spanning Tree Protocol (STP) configuration. */ |
696 | ||
697 | /* Configures STP on 'ofproto' using the settings defined in 's'. If | |
698 | * 's' is NULL, disables STP. | |
699 | * | |
700 | * Returns 0 if successful, otherwise a positive errno value. */ | |
701 | int | |
702 | ofproto_set_stp(struct ofproto *ofproto, | |
703 | const struct ofproto_stp_settings *s) | |
704 | { | |
705 | return (ofproto->ofproto_class->set_stp | |
706 | ? ofproto->ofproto_class->set_stp(ofproto, s) | |
707 | : EOPNOTSUPP); | |
708 | } | |
709 | ||
710 | /* Retrieves STP status of 'ofproto' and stores it in 's'. If the | |
711 | * 'enabled' member of 's' is false, then the other members are not | |
712 | * meaningful. | |
713 | * | |
714 | * Returns 0 if successful, otherwise a positive errno value. */ | |
715 | int | |
716 | ofproto_get_stp_status(struct ofproto *ofproto, | |
717 | struct ofproto_stp_status *s) | |
718 | { | |
719 | return (ofproto->ofproto_class->get_stp_status | |
720 | ? ofproto->ofproto_class->get_stp_status(ofproto, s) | |
721 | : EOPNOTSUPP); | |
722 | } | |
723 | ||
724 | /* Configures STP on 'ofp_port' of 'ofproto' using the settings defined | |
725 | * in 's'. The caller is responsible for assigning STP port numbers | |
726 | * (using the 'port_num' member in the range of 1 through 255, inclusive) | |
727 | * and ensuring there are no duplicates. If the 's' is NULL, then STP | |
728 | * is disabled on the port. | |
729 | * | |
730 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
731 | int | |
4e022ec0 | 732 | ofproto_port_set_stp(struct ofproto *ofproto, ofp_port_t ofp_port, |
21f7563c JP |
733 | const struct ofproto_port_stp_settings *s) |
734 | { | |
735 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
736 | if (!ofport) { | |
737 | VLOG_WARN("%s: cannot configure STP on nonexistent port %"PRIu16, | |
738 | ofproto->name, ofp_port); | |
739 | return ENODEV; | |
740 | } | |
741 | ||
742 | return (ofproto->ofproto_class->set_stp_port | |
743 | ? ofproto->ofproto_class->set_stp_port(ofport, s) | |
744 | : EOPNOTSUPP); | |
745 | } | |
746 | ||
747 | /* Retrieves STP port status of 'ofp_port' on 'ofproto' and stores it in | |
748 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
749 | * are not meaningful. | |
750 | * | |
751 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
752 | int | |
4e022ec0 | 753 | ofproto_port_get_stp_status(struct ofproto *ofproto, ofp_port_t ofp_port, |
21f7563c JP |
754 | struct ofproto_port_stp_status *s) |
755 | { | |
756 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
757 | if (!ofport) { | |
b0a5c43b JP |
758 | VLOG_WARN_RL(&rl, "%s: cannot get STP status on nonexistent " |
759 | "port %"PRIu16, ofproto->name, ofp_port); | |
21f7563c JP |
760 | return ENODEV; |
761 | } | |
762 | ||
763 | return (ofproto->ofproto_class->get_stp_port_status | |
764 | ? ofproto->ofproto_class->get_stp_port_status(ofport, s) | |
765 | : EOPNOTSUPP); | |
766 | } | |
767 | \f | |
8b36f51e EJ |
768 | /* Queue DSCP configuration. */ |
769 | ||
770 | /* Registers meta-data associated with the 'n_qdscp' Qualities of Service | |
771 | * 'queues' attached to 'ofport'. This data is not intended to be sufficient | |
772 | * to implement QoS. Instead, it is used to implement features which require | |
773 | * knowledge of what queues exist on a port, and some basic information about | |
774 | * them. | |
775 | * | |
776 | * Returns 0 if successful, otherwise a positive errno value. */ | |
777 | int | |
4e022ec0 | 778 | ofproto_port_set_queues(struct ofproto *ofproto, ofp_port_t ofp_port, |
8b36f51e EJ |
779 | const struct ofproto_port_queue *queues, |
780 | size_t n_queues) | |
781 | { | |
782 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
783 | ||
784 | if (!ofport) { | |
785 | VLOG_WARN("%s: cannot set queues on nonexistent port %"PRIu16, | |
786 | ofproto->name, ofp_port); | |
787 | return ENODEV; | |
788 | } | |
789 | ||
790 | return (ofproto->ofproto_class->set_queues | |
791 | ? ofproto->ofproto_class->set_queues(ofport, queues, n_queues) | |
792 | : EOPNOTSUPP); | |
793 | } | |
794 | \f | |
e7934396 BP |
795 | /* Connectivity Fault Management configuration. */ |
796 | ||
892815f5 | 797 | /* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */ |
e7934396 | 798 | void |
4e022ec0 | 799 | ofproto_port_clear_cfm(struct ofproto *ofproto, ofp_port_t ofp_port) |
e7934396 | 800 | { |
abe529af BP |
801 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
802 | if (ofport && ofproto->ofproto_class->set_cfm) { | |
a5610457 | 803 | ofproto->ofproto_class->set_cfm(ofport, NULL); |
e7934396 BP |
804 | } |
805 | } | |
72b06300 | 806 | |
892815f5 | 807 | /* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes |
93b8df38 EJ |
808 | * basic configuration from the configuration members in 'cfm', and the remote |
809 | * maintenance point ID from remote_mpid. Ignores the statistics members of | |
810 | * 'cfm'. | |
e7934396 | 811 | * |
892815f5 | 812 | * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */ |
e7934396 | 813 | void |
4e022ec0 | 814 | ofproto_port_set_cfm(struct ofproto *ofproto, ofp_port_t ofp_port, |
a5610457 | 815 | const struct cfm_settings *s) |
e7934396 BP |
816 | { |
817 | struct ofport *ofport; | |
abe529af | 818 | int error; |
e7934396 | 819 | |
abe529af | 820 | ofport = ofproto_get_port(ofproto, ofp_port); |
e7934396 | 821 | if (!ofport) { |
892815f5 BP |
822 | VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16, |
823 | ofproto->name, ofp_port); | |
e7934396 BP |
824 | return; |
825 | } | |
826 | ||
93b8df38 EJ |
827 | /* XXX: For configuration simplicity, we only support one remote_mpid |
828 | * outside of the CFM module. It's not clear if this is the correct long | |
829 | * term solution or not. */ | |
abe529af | 830 | error = (ofproto->ofproto_class->set_cfm |
a5610457 | 831 | ? ofproto->ofproto_class->set_cfm(ofport, s) |
abe529af BP |
832 | : EOPNOTSUPP); |
833 | if (error) { | |
834 | VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed (%s)", | |
835 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
10a89ef0 | 836 | ovs_strerror(error)); |
e7934396 | 837 | } |
e7934396 | 838 | } |
e7934396 | 839 | |
ccc09689 EJ |
840 | /* Configures BFD on 'ofp_port' in 'ofproto'. This function has no effect if |
841 | * 'ofproto' does not have a port 'ofp_port'. */ | |
842 | void | |
4e022ec0 | 843 | ofproto_port_set_bfd(struct ofproto *ofproto, ofp_port_t ofp_port, |
ccc09689 EJ |
844 | const struct smap *cfg) |
845 | { | |
846 | struct ofport *ofport; | |
847 | int error; | |
848 | ||
849 | ofport = ofproto_get_port(ofproto, ofp_port); | |
850 | if (!ofport) { | |
851 | VLOG_WARN("%s: cannot configure bfd on nonexistent port %"PRIu16, | |
852 | ofproto->name, ofp_port); | |
e8999bdc | 853 | return; |
ccc09689 EJ |
854 | } |
855 | ||
856 | error = (ofproto->ofproto_class->set_bfd | |
857 | ? ofproto->ofproto_class->set_bfd(ofport, cfg) | |
858 | : EOPNOTSUPP); | |
859 | if (error) { | |
860 | VLOG_WARN("%s: bfd configuration on port %"PRIu16" (%s) failed (%s)", | |
861 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
10a89ef0 | 862 | ovs_strerror(error)); |
ccc09689 EJ |
863 | } |
864 | } | |
865 | ||
866 | /* Populates 'status' with key value pairs indicating the status of the BFD | |
867 | * session on 'ofp_port'. This information is intended to be populated in the | |
868 | * OVS database. Has no effect if 'ofp_port' is not na OpenFlow port in | |
869 | * 'ofproto'. */ | |
870 | int | |
4e022ec0 | 871 | ofproto_port_get_bfd_status(struct ofproto *ofproto, ofp_port_t ofp_port, |
ccc09689 EJ |
872 | struct smap *status) |
873 | { | |
874 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
875 | return (ofport && ofproto->ofproto_class->get_bfd_status | |
876 | ? ofproto->ofproto_class->get_bfd_status(ofport, status) | |
877 | : EOPNOTSUPP); | |
878 | } | |
879 | ||
fa066f01 BP |
880 | /* Checks the status of LACP negotiation for 'ofp_port' within ofproto. |
881 | * Returns 1 if LACP partner information for 'ofp_port' is up-to-date, | |
882 | * 0 if LACP partner information is not current (generally indicating a | |
883 | * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */ | |
884 | int | |
4e022ec0 | 885 | ofproto_port_is_lacp_current(struct ofproto *ofproto, ofp_port_t ofp_port) |
fa066f01 | 886 | { |
abe529af BP |
887 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
888 | return (ofport && ofproto->ofproto_class->port_is_lacp_current | |
889 | ? ofproto->ofproto_class->port_is_lacp_current(ofport) | |
fa066f01 | 890 | : -1); |
e7934396 | 891 | } |
e7934396 | 892 | \f |
fa066f01 | 893 | /* Bundles. */ |
e7934396 | 894 | |
abe529af BP |
895 | /* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'. |
896 | * A bundle is the same concept as a Port in OVSDB, that is, it consists of one | |
897 | * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN | |
898 | * configuration plus, if there is more than one slave, a bonding | |
899 | * configuration. | |
900 | * | |
901 | * If 'aux' is already registered then this function updates its configuration | |
902 | * to 's'. Otherwise, this function registers a new bundle. | |
903 | * | |
904 | * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL | |
905 | * port. */ | |
906 | int | |
907 | ofproto_bundle_register(struct ofproto *ofproto, void *aux, | |
908 | const struct ofproto_bundle_settings *s) | |
fa066f01 | 909 | { |
abe529af BP |
910 | return (ofproto->ofproto_class->bundle_set |
911 | ? ofproto->ofproto_class->bundle_set(ofproto, aux, s) | |
912 | : EOPNOTSUPP); | |
fa066f01 BP |
913 | } |
914 | ||
abe529af BP |
915 | /* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'. |
916 | * If no such bundle has been registered, this has no effect. */ | |
917 | int | |
918 | ofproto_bundle_unregister(struct ofproto *ofproto, void *aux) | |
e7934396 | 919 | { |
abe529af | 920 | return ofproto_bundle_register(ofproto, aux, NULL); |
e7934396 | 921 | } |
fa066f01 | 922 | |
e7934396 | 923 | \f |
abe529af BP |
924 | /* Registers a mirror associated with client data pointer 'aux' in 'ofproto'. |
925 | * If 'aux' is already registered then this function updates its configuration | |
c06bba01 | 926 | * to 's'. Otherwise, this function registers a new mirror. */ |
abe529af BP |
927 | int |
928 | ofproto_mirror_register(struct ofproto *ofproto, void *aux, | |
929 | const struct ofproto_mirror_settings *s) | |
064af421 | 930 | { |
abe529af BP |
931 | return (ofproto->ofproto_class->mirror_set |
932 | ? ofproto->ofproto_class->mirror_set(ofproto, aux, s) | |
933 | : EOPNOTSUPP); | |
064af421 BP |
934 | } |
935 | ||
abe529af BP |
936 | /* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'. |
937 | * If no mirror has been registered, this has no effect. */ | |
938 | int | |
939 | ofproto_mirror_unregister(struct ofproto *ofproto, void *aux) | |
064af421 | 940 | { |
abe529af | 941 | return ofproto_mirror_register(ofproto, aux, NULL); |
064af421 BP |
942 | } |
943 | ||
9d24de3b JP |
944 | /* Retrieves statistics from mirror associated with client data pointer |
945 | * 'aux' in 'ofproto'. Stores packet and byte counts in 'packets' and | |
946 | * 'bytes', respectively. If a particular counters is not supported, | |
947 | * the appropriate argument is set to UINT64_MAX. */ | |
948 | int | |
949 | ofproto_mirror_get_stats(struct ofproto *ofproto, void *aux, | |
950 | uint64_t *packets, uint64_t *bytes) | |
951 | { | |
952 | if (!ofproto->ofproto_class->mirror_get_stats) { | |
953 | *packets = *bytes = UINT64_MAX; | |
954 | return EOPNOTSUPP; | |
955 | } | |
956 | ||
957 | return ofproto->ofproto_class->mirror_get_stats(ofproto, aux, | |
958 | packets, bytes); | |
959 | } | |
960 | ||
abe529af BP |
961 | /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on |
962 | * which all packets are flooded, instead of using MAC learning. If | |
963 | * 'flood_vlans' is NULL, then MAC learning applies to all VLANs. | |
964 | * | |
965 | * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL | |
966 | * port. */ | |
967 | int | |
968 | ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans) | |
abdfe474 | 969 | { |
abe529af BP |
970 | return (ofproto->ofproto_class->set_flood_vlans |
971 | ? ofproto->ofproto_class->set_flood_vlans(ofproto, flood_vlans) | |
972 | : EOPNOTSUPP); | |
abdfe474 JP |
973 | } |
974 | ||
abe529af BP |
975 | /* Returns true if 'aux' is a registered bundle that is currently in use as the |
976 | * output for a mirror. */ | |
977 | bool | |
b4affc74 | 978 | ofproto_is_mirror_output_bundle(const struct ofproto *ofproto, void *aux) |
abe529af BP |
979 | { |
980 | return (ofproto->ofproto_class->is_mirror_output_bundle | |
981 | ? ofproto->ofproto_class->is_mirror_output_bundle(ofproto, aux) | |
982 | : false); | |
983 | } | |
984 | \f | |
254750ce BP |
985 | /* Configuration of OpenFlow tables. */ |
986 | ||
987 | /* Returns the number of OpenFlow tables in 'ofproto'. */ | |
988 | int | |
989 | ofproto_get_n_tables(const struct ofproto *ofproto) | |
990 | { | |
991 | return ofproto->n_tables; | |
992 | } | |
993 | ||
994 | /* Configures the OpenFlow table in 'ofproto' with id 'table_id' with the | |
995 | * settings from 's'. 'table_id' must be in the range 0 through the number of | |
996 | * OpenFlow tables in 'ofproto' minus 1, inclusive. | |
997 | * | |
998 | * For read-only tables, only the name may be configured. */ | |
999 | void | |
1000 | ofproto_configure_table(struct ofproto *ofproto, int table_id, | |
1001 | const struct ofproto_table_settings *s) | |
1002 | { | |
1003 | struct oftable *table; | |
1004 | ||
cb22974d | 1005 | ovs_assert(table_id >= 0 && table_id < ofproto->n_tables); |
254750ce BP |
1006 | table = &ofproto->tables[table_id]; |
1007 | ||
1008 | oftable_set_name(table, s->name); | |
1009 | ||
1010 | if (table->flags & OFTABLE_READONLY) { | |
1011 | return; | |
1012 | } | |
1013 | ||
1014 | if (s->groups) { | |
1015 | oftable_enable_eviction(table, s->groups, s->n_groups); | |
1016 | } else { | |
1017 | oftable_disable_eviction(table); | |
1018 | } | |
1019 | ||
1020 | table->max_flows = s->max_flows; | |
1021 | if (classifier_count(&table->cls) > table->max_flows | |
1022 | && table->eviction_fields) { | |
1023 | /* 'table' contains more flows than allowed. We might not be able to | |
1024 | * evict them right away because of the asynchronous nature of flow | |
1025 | * table changes. Schedule eviction for later. */ | |
1026 | switch (ofproto->state) { | |
1027 | case S_OPENFLOW: | |
1028 | ofproto->state = S_EVICT; | |
1029 | break; | |
1030 | case S_EVICT: | |
1031 | case S_FLUSH: | |
1032 | /* We're already deleting flows, nothing more to do. */ | |
1033 | break; | |
1034 | } | |
1035 | } | |
1036 | } | |
1037 | \f | |
81e2083f BP |
1038 | bool |
1039 | ofproto_has_snoops(const struct ofproto *ofproto) | |
1040 | { | |
1041 | return connmgr_has_snoops(ofproto->connmgr); | |
1042 | } | |
1043 | ||
064af421 | 1044 | void |
81e2083f | 1045 | ofproto_get_snoops(const struct ofproto *ofproto, struct sset *snoops) |
064af421 | 1046 | { |
19a87e36 | 1047 | connmgr_get_snoops(ofproto->connmgr, snoops); |
064af421 BP |
1048 | } |
1049 | ||
7ee20df1 BP |
1050 | static void |
1051 | ofproto_flush__(struct ofproto *ofproto) | |
1052 | { | |
7ee20df1 | 1053 | struct ofopgroup *group; |
d0918789 | 1054 | struct oftable *table; |
7ee20df1 BP |
1055 | |
1056 | if (ofproto->ofproto_class->flush) { | |
1057 | ofproto->ofproto_class->flush(ofproto); | |
1058 | } | |
1059 | ||
7024dffe | 1060 | group = ofopgroup_create_unattached(ofproto); |
b772ded8 | 1061 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
7ee20df1 BP |
1062 | struct rule *rule, *next_rule; |
1063 | struct cls_cursor cursor; | |
1064 | ||
5c67e4af BP |
1065 | if (table->flags & OFTABLE_HIDDEN) { |
1066 | continue; | |
1067 | } | |
1068 | ||
d0918789 | 1069 | cls_cursor_init(&cursor, &table->cls, NULL); |
7ee20df1 BP |
1070 | CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) { |
1071 | if (!rule->pending) { | |
2b07c8b1 BP |
1072 | ofoperation_create(group, rule, OFOPERATION_DELETE, |
1073 | OFPRR_DELETE); | |
d0918789 | 1074 | oftable_remove_rule(rule); |
7ee20df1 BP |
1075 | ofproto->ofproto_class->rule_destruct(rule); |
1076 | } | |
1077 | } | |
1078 | } | |
1079 | ofopgroup_submit(group); | |
1080 | } | |
1081 | ||
abe529af BP |
1082 | static void |
1083 | ofproto_destroy__(struct ofproto *ofproto) | |
1084 | { | |
d0918789 | 1085 | struct oftable *table; |
6c1491fb | 1086 | |
cb22974d BP |
1087 | ovs_assert(list_is_empty(&ofproto->pending)); |
1088 | ovs_assert(!ofproto->n_pending); | |
7ee20df1 | 1089 | |
6b3f7f02 JR |
1090 | if (ofproto->meters) { |
1091 | meter_delete(ofproto, 1, ofproto->meter_features.max_meters); | |
1092 | free(ofproto->meters); | |
1093 | } | |
1094 | ||
abe529af | 1095 | connmgr_destroy(ofproto->connmgr); |
fa066f01 | 1096 | |
abe529af BP |
1097 | hmap_remove(&all_ofprotos, &ofproto->hmap_node); |
1098 | free(ofproto->name); | |
955a7127 | 1099 | free(ofproto->type); |
abe529af BP |
1100 | free(ofproto->mfr_desc); |
1101 | free(ofproto->hw_desc); | |
1102 | free(ofproto->sw_desc); | |
1103 | free(ofproto->serial_desc); | |
1104 | free(ofproto->dp_desc); | |
abe529af BP |
1105 | hmap_destroy(&ofproto->ports); |
1106 | shash_destroy(&ofproto->port_by_name); | |
e1b1d06a JP |
1107 | bitmap_free(ofproto->ofp_port_ids); |
1108 | simap_destroy(&ofproto->ofp_requests); | |
6c1491fb | 1109 | |
b772ded8 | 1110 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
d0918789 | 1111 | oftable_destroy(table); |
6c1491fb BP |
1112 | } |
1113 | free(ofproto->tables); | |
fa066f01 | 1114 | |
7ee20df1 BP |
1115 | hmap_destroy(&ofproto->deletions); |
1116 | ||
52a90c29 BP |
1117 | free(ofproto->vlan_bitmap); |
1118 | ||
83b16b98 | 1119 | ovs_mutex_destroy(&ofproto->expirable_mutex); |
abe529af BP |
1120 | ofproto->ofproto_class->dealloc(ofproto); |
1121 | } | |
fa066f01 | 1122 | |
064af421 BP |
1123 | void |
1124 | ofproto_destroy(struct ofproto *p) | |
1125 | { | |
ca0f572c | 1126 | struct ofport *ofport, *next_ofport; |
064af421 BP |
1127 | |
1128 | if (!p) { | |
1129 | return; | |
1130 | } | |
1131 | ||
7ee20df1 | 1132 | ofproto_flush__(p); |
4e8e4213 | 1133 | HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) { |
abe529af | 1134 | ofport_destroy(ofport); |
064af421 | 1135 | } |
064af421 | 1136 | |
abe529af BP |
1137 | p->ofproto_class->destruct(p); |
1138 | ofproto_destroy__(p); | |
064af421 BP |
1139 | } |
1140 | ||
abe529af BP |
1141 | /* Destroys the datapath with the respective 'name' and 'type'. With the Linux |
1142 | * kernel datapath, for example, this destroys the datapath in the kernel, and | |
1143 | * with the netdev-based datapath, it tears down the data structures that | |
1144 | * represent the datapath. | |
1145 | * | |
1146 | * The datapath should not be currently open as an ofproto. */ | |
064af421 | 1147 | int |
abe529af | 1148 | ofproto_delete(const char *name, const char *type) |
064af421 | 1149 | { |
abe529af BP |
1150 | const struct ofproto_class *class = ofproto_class_find__(type); |
1151 | return (!class ? EAFNOSUPPORT | |
1152 | : !class->del ? EACCES | |
1153 | : class->del(type, name)); | |
064af421 BP |
1154 | } |
1155 | ||
e9e28be3 BP |
1156 | static void |
1157 | process_port_change(struct ofproto *ofproto, int error, char *devname) | |
1158 | { | |
1159 | if (error == ENOBUFS) { | |
1160 | reinit_ports(ofproto); | |
1161 | } else if (!error) { | |
1162 | update_port(ofproto, devname); | |
1163 | free(devname); | |
1164 | } | |
1165 | } | |
1166 | ||
11a574a7 JP |
1167 | int |
1168 | ofproto_type_run(const char *datapath_type) | |
1169 | { | |
1170 | const struct ofproto_class *class; | |
1171 | int error; | |
1172 | ||
1173 | datapath_type = ofproto_normalize_type(datapath_type); | |
1174 | class = ofproto_class_find__(datapath_type); | |
1175 | ||
1176 | error = class->type_run ? class->type_run(datapath_type) : 0; | |
1177 | if (error && error != EAGAIN) { | |
1178 | VLOG_ERR_RL(&rl, "%s: type_run failed (%s)", | |
10a89ef0 | 1179 | datapath_type, ovs_strerror(error)); |
11a574a7 JP |
1180 | } |
1181 | return error; | |
1182 | } | |
1183 | ||
1184 | int | |
1185 | ofproto_type_run_fast(const char *datapath_type) | |
1186 | { | |
1187 | const struct ofproto_class *class; | |
1188 | int error; | |
1189 | ||
1190 | datapath_type = ofproto_normalize_type(datapath_type); | |
1191 | class = ofproto_class_find__(datapath_type); | |
1192 | ||
1193 | error = class->type_run_fast ? class->type_run_fast(datapath_type) : 0; | |
1194 | if (error && error != EAGAIN) { | |
1195 | VLOG_ERR_RL(&rl, "%s: type_run_fast failed (%s)", | |
10a89ef0 | 1196 | datapath_type, ovs_strerror(error)); |
11a574a7 JP |
1197 | } |
1198 | return error; | |
1199 | } | |
1200 | ||
1201 | void | |
1202 | ofproto_type_wait(const char *datapath_type) | |
1203 | { | |
1204 | const struct ofproto_class *class; | |
1205 | ||
1206 | datapath_type = ofproto_normalize_type(datapath_type); | |
1207 | class = ofproto_class_find__(datapath_type); | |
1208 | ||
1209 | if (class->type_wait) { | |
1210 | class->type_wait(datapath_type); | |
1211 | } | |
1212 | } | |
1213 | ||
064af421 | 1214 | int |
abe529af | 1215 | ofproto_run(struct ofproto *p) |
064af421 | 1216 | { |
7436ed80 BP |
1217 | struct sset changed_netdevs; |
1218 | const char *changed_netdev; | |
031d8bff | 1219 | struct ofport *ofport; |
064af421 | 1220 | int error; |
064af421 | 1221 | |
abe529af | 1222 | error = p->ofproto_class->run(p); |
5fcc0d00 | 1223 | if (error && error != EAGAIN) { |
10a89ef0 | 1224 | VLOG_ERR_RL(&rl, "%s: run failed (%s)", p->name, ovs_strerror(error)); |
149f577a JG |
1225 | } |
1226 | ||
5bf0e941 | 1227 | if (p->ofproto_class->port_poll) { |
7436ed80 BP |
1228 | char *devname; |
1229 | ||
5bf0e941 BP |
1230 | while ((error = p->ofproto_class->port_poll(p, &devname)) != EAGAIN) { |
1231 | process_port_change(p, error, devname); | |
064af421 | 1232 | } |
e9e28be3 | 1233 | } |
031d8bff | 1234 | |
7436ed80 BP |
1235 | /* Update OpenFlow port status for any port whose netdev has changed. |
1236 | * | |
1237 | * Refreshing a given 'ofport' can cause an arbitrary ofport to be | |
1238 | * destroyed, so it's not safe to update ports directly from the | |
1239 | * HMAP_FOR_EACH loop, or even to use HMAP_FOR_EACH_SAFE. Instead, we | |
1240 | * need this two-phase approach. */ | |
1241 | sset_init(&changed_netdevs); | |
031d8bff EJ |
1242 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { |
1243 | unsigned int change_seq = netdev_change_seq(ofport->netdev); | |
1244 | if (ofport->change_seq != change_seq) { | |
1245 | ofport->change_seq = change_seq; | |
7436ed80 | 1246 | sset_add(&changed_netdevs, netdev_get_name(ofport->netdev)); |
031d8bff | 1247 | } |
064af421 | 1248 | } |
7436ed80 BP |
1249 | SSET_FOR_EACH (changed_netdev, &changed_netdevs) { |
1250 | update_port(p, changed_netdev); | |
1251 | } | |
1252 | sset_destroy(&changed_netdevs); | |
064af421 | 1253 | |
7ee20df1 BP |
1254 | switch (p->state) { |
1255 | case S_OPENFLOW: | |
1256 | connmgr_run(p->connmgr, handle_openflow); | |
1257 | break; | |
1258 | ||
254750ce BP |
1259 | case S_EVICT: |
1260 | connmgr_run(p->connmgr, NULL); | |
1261 | ofproto_evict(p); | |
1262 | if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) { | |
1263 | p->state = S_OPENFLOW; | |
1264 | } | |
1265 | break; | |
1266 | ||
7ee20df1 BP |
1267 | case S_FLUSH: |
1268 | connmgr_run(p->connmgr, NULL); | |
1269 | ofproto_flush__(p); | |
1270 | if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) { | |
1271 | connmgr_flushed(p->connmgr); | |
1272 | p->state = S_OPENFLOW; | |
1273 | } | |
1274 | break; | |
1275 | ||
1276 | default: | |
1277 | NOT_REACHED(); | |
1278 | } | |
064af421 | 1279 | |
a5b8d268 BP |
1280 | if (time_msec() >= p->next_op_report) { |
1281 | long long int ago = (time_msec() - p->first_op) / 1000; | |
1282 | long long int interval = (p->last_op - p->first_op) / 1000; | |
1283 | struct ds s; | |
1284 | ||
1285 | ds_init(&s); | |
1286 | ds_put_format(&s, "%d flow_mods ", | |
1287 | p->n_add + p->n_delete + p->n_modify); | |
1288 | if (interval == ago) { | |
1289 | ds_put_format(&s, "in the last %lld s", ago); | |
1290 | } else if (interval) { | |
1291 | ds_put_format(&s, "in the %lld s starting %lld s ago", | |
1292 | interval, ago); | |
1293 | } else { | |
1294 | ds_put_format(&s, "%lld s ago", ago); | |
1295 | } | |
1296 | ||
1297 | ds_put_cstr(&s, " ("); | |
1298 | if (p->n_add) { | |
1299 | ds_put_format(&s, "%d adds, ", p->n_add); | |
1300 | } | |
1301 | if (p->n_delete) { | |
1302 | ds_put_format(&s, "%d deletes, ", p->n_delete); | |
1303 | } | |
1304 | if (p->n_modify) { | |
1305 | ds_put_format(&s, "%d modifications, ", p->n_modify); | |
1306 | } | |
1307 | s.length -= 2; | |
1308 | ds_put_char(&s, ')'); | |
1309 | ||
fbfa2911 | 1310 | VLOG_INFO("%s: %s", p->name, ds_cstr(&s)); |
a5b8d268 BP |
1311 | ds_destroy(&s); |
1312 | ||
1313 | p->n_add = p->n_delete = p->n_modify = 0; | |
1314 | p->next_op_report = LLONG_MAX; | |
1315 | } | |
1316 | ||
5fcc0d00 BP |
1317 | return error; |
1318 | } | |
1319 | ||
1320 | /* Performs periodic activity required by 'ofproto' that needs to be done | |
1321 | * with the least possible latency. | |
1322 | * | |
1323 | * It makes sense to call this function a couple of times per poll loop, to | |
1324 | * provide a significant performance boost on some benchmarks with the | |
1325 | * ofproto-dpif implementation. */ | |
1326 | int | |
1327 | ofproto_run_fast(struct ofproto *p) | |
1328 | { | |
1329 | int error; | |
1330 | ||
1331 | error = p->ofproto_class->run_fast ? p->ofproto_class->run_fast(p) : 0; | |
1332 | if (error && error != EAGAIN) { | |
1333 | VLOG_ERR_RL(&rl, "%s: fastpath run failed (%s)", | |
10a89ef0 | 1334 | p->name, ovs_strerror(error)); |
5fcc0d00 BP |
1335 | } |
1336 | return error; | |
064af421 BP |
1337 | } |
1338 | ||
1339 | void | |
1340 | ofproto_wait(struct ofproto *p) | |
1341 | { | |
031d8bff EJ |
1342 | struct ofport *ofport; |
1343 | ||
abe529af | 1344 | p->ofproto_class->wait(p); |
5bf0e941 BP |
1345 | if (p->ofproto_class->port_poll_wait) { |
1346 | p->ofproto_class->port_poll_wait(p); | |
e7934396 | 1347 | } |
031d8bff EJ |
1348 | |
1349 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
1350 | if (ofport->change_seq != netdev_change_seq(ofport->netdev)) { | |
1351 | poll_immediate_wake(); | |
1352 | } | |
1353 | } | |
7ee20df1 BP |
1354 | |
1355 | switch (p->state) { | |
1356 | case S_OPENFLOW: | |
1357 | connmgr_wait(p->connmgr, true); | |
1358 | break; | |
1359 | ||
254750ce | 1360 | case S_EVICT: |
7ee20df1 BP |
1361 | case S_FLUSH: |
1362 | connmgr_wait(p->connmgr, false); | |
1363 | if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) { | |
1364 | poll_immediate_wake(); | |
1365 | } | |
1366 | break; | |
1367 | } | |
064af421 BP |
1368 | } |
1369 | ||
064af421 BP |
1370 | bool |
1371 | ofproto_is_alive(const struct ofproto *p) | |
1372 | { | |
19a87e36 | 1373 | return connmgr_has_controllers(p->connmgr); |
064af421 BP |
1374 | } |
1375 | ||
0d085684 BP |
1376 | /* Adds some memory usage statistics for 'ofproto' into 'usage', for use with |
1377 | * memory_report(). */ | |
1378 | void | |
1379 | ofproto_get_memory_usage(const struct ofproto *ofproto, struct simap *usage) | |
1380 | { | |
1381 | const struct oftable *table; | |
1382 | unsigned int n_rules; | |
1383 | ||
1384 | simap_increase(usage, "ports", hmap_count(&ofproto->ports)); | |
1385 | simap_increase(usage, "ops", | |
1386 | ofproto->n_pending + hmap_count(&ofproto->deletions)); | |
1387 | ||
1388 | n_rules = 0; | |
1389 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
1390 | n_rules += classifier_count(&table->cls); | |
1391 | } | |
1392 | simap_increase(usage, "rules", n_rules); | |
1393 | ||
1394 | if (ofproto->ofproto_class->get_memory_usage) { | |
1395 | ofproto->ofproto_class->get_memory_usage(ofproto, usage); | |
1396 | } | |
1397 | ||
1398 | connmgr_get_memory_usage(ofproto->connmgr, usage); | |
1399 | } | |
1400 | ||
bffc0589 | 1401 | void |
2cdcb898 | 1402 | ofproto_get_ofproto_controller_info(const struct ofproto *ofproto, |
bffc0589 AE |
1403 | struct shash *info) |
1404 | { | |
19a87e36 | 1405 | connmgr_get_controller_info(ofproto->connmgr, info); |
bffc0589 AE |
1406 | } |
1407 | ||
1408 | void | |
1409 | ofproto_free_ofproto_controller_info(struct shash *info) | |
1410 | { | |
72ba2ed3 | 1411 | connmgr_free_controller_info(info); |
bffc0589 AE |
1412 | } |
1413 | ||
b5827b24 BP |
1414 | /* Makes a deep copy of 'old' into 'port'. */ |
1415 | void | |
1416 | ofproto_port_clone(struct ofproto_port *port, const struct ofproto_port *old) | |
1417 | { | |
1418 | port->name = xstrdup(old->name); | |
1419 | port->type = xstrdup(old->type); | |
1420 | port->ofp_port = old->ofp_port; | |
1421 | } | |
1422 | ||
1423 | /* Frees memory allocated to members of 'ofproto_port'. | |
3a6ccc8c | 1424 | * |
b5827b24 BP |
1425 | * Do not call this function on an ofproto_port obtained from |
1426 | * ofproto_port_dump_next(): that function retains ownership of the data in the | |
1427 | * ofproto_port. */ | |
1428 | void | |
1429 | ofproto_port_destroy(struct ofproto_port *ofproto_port) | |
1430 | { | |
1431 | free(ofproto_port->name); | |
1432 | free(ofproto_port->type); | |
1433 | } | |
1434 | ||
b5827b24 | 1435 | /* Initializes 'dump' to begin dumping the ports in an ofproto. |
3a6ccc8c | 1436 | * |
b5827b24 BP |
1437 | * This function provides no status indication. An error status for the entire |
1438 | * dump operation is provided when it is completed by calling | |
1439 | * ofproto_port_dump_done(). | |
1440 | */ | |
1441 | void | |
1442 | ofproto_port_dump_start(struct ofproto_port_dump *dump, | |
1443 | const struct ofproto *ofproto) | |
1444 | { | |
abe529af BP |
1445 | dump->ofproto = ofproto; |
1446 | dump->error = ofproto->ofproto_class->port_dump_start(ofproto, | |
1447 | &dump->state); | |
b5827b24 BP |
1448 | } |
1449 | ||
1450 | /* Attempts to retrieve another port from 'dump', which must have been created | |
1451 | * with ofproto_port_dump_start(). On success, stores a new ofproto_port into | |
1452 | * 'port' and returns true. On failure, returns false. | |
1453 | * | |
1454 | * Failure might indicate an actual error or merely that the last port has been | |
1455 | * dumped. An error status for the entire dump operation is provided when it | |
1456 | * is completed by calling ofproto_port_dump_done(). | |
1457 | * | |
1458 | * The ofproto owns the data stored in 'port'. It will remain valid until at | |
1459 | * least the next time 'dump' is passed to ofproto_port_dump_next() or | |
1460 | * ofproto_port_dump_done(). */ | |
1461 | bool | |
1462 | ofproto_port_dump_next(struct ofproto_port_dump *dump, | |
1463 | struct ofproto_port *port) | |
1464 | { | |
abe529af BP |
1465 | const struct ofproto *ofproto = dump->ofproto; |
1466 | ||
1467 | if (dump->error) { | |
1468 | return false; | |
1469 | } | |
b5827b24 | 1470 | |
abe529af BP |
1471 | dump->error = ofproto->ofproto_class->port_dump_next(ofproto, dump->state, |
1472 | port); | |
1473 | if (dump->error) { | |
1474 | ofproto->ofproto_class->port_dump_done(ofproto, dump->state); | |
1475 | return false; | |
b5827b24 | 1476 | } |
abe529af | 1477 | return true; |
b5827b24 BP |
1478 | } |
1479 | ||
1480 | /* Completes port table dump operation 'dump', which must have been created | |
1481 | * with ofproto_port_dump_start(). Returns 0 if the dump operation was | |
1482 | * error-free, otherwise a positive errno value describing the problem. */ | |
3a6ccc8c | 1483 | int |
b5827b24 | 1484 | ofproto_port_dump_done(struct ofproto_port_dump *dump) |
3a6ccc8c | 1485 | { |
abe529af BP |
1486 | const struct ofproto *ofproto = dump->ofproto; |
1487 | if (!dump->error) { | |
1488 | dump->error = ofproto->ofproto_class->port_dump_done(ofproto, | |
1489 | dump->state); | |
1490 | } | |
1491 | return dump->error == EOF ? 0 : dump->error; | |
b5827b24 BP |
1492 | } |
1493 | ||
0aeaabc8 JP |
1494 | /* Returns the type to pass to netdev_open() when a datapath of type |
1495 | * 'datapath_type' has a port of type 'port_type', for a few special | |
1496 | * cases when a netdev type differs from a port type. For example, when | |
1497 | * using the userspace datapath, a port of type "internal" needs to be | |
1498 | * opened as "tap". | |
1499 | * | |
1500 | * Returns either 'type' itself or a string literal, which must not be | |
1501 | * freed. */ | |
1502 | const char * | |
1503 | ofproto_port_open_type(const char *datapath_type, const char *port_type) | |
1504 | { | |
1505 | const struct ofproto_class *class; | |
1506 | ||
1507 | datapath_type = ofproto_normalize_type(datapath_type); | |
1508 | class = ofproto_class_find__(datapath_type); | |
1509 | if (!class) { | |
1510 | return port_type; | |
1511 | } | |
1512 | ||
1513 | return (class->port_open_type | |
1514 | ? class->port_open_type(datapath_type, port_type) | |
1515 | : port_type); | |
1516 | } | |
1517 | ||
81816a5f JP |
1518 | /* Attempts to add 'netdev' as a port on 'ofproto'. If 'ofp_portp' is |
1519 | * non-null and '*ofp_portp' is not OFPP_NONE, attempts to use that as | |
1520 | * the port's OpenFlow port number. | |
1521 | * | |
1522 | * If successful, returns 0 and sets '*ofp_portp' to the new port's | |
1523 | * OpenFlow port number (if 'ofp_portp' is non-null). On failure, | |
1524 | * returns a positive errno value and sets '*ofp_portp' to OFPP_NONE (if | |
1525 | * 'ofp_portp' is non-null). */ | |
b5827b24 BP |
1526 | int |
1527 | ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev, | |
4e022ec0 | 1528 | ofp_port_t *ofp_portp) |
b5827b24 | 1529 | { |
4e022ec0 | 1530 | ofp_port_t ofp_port = ofp_portp ? *ofp_portp : OFPP_NONE; |
3a6ccc8c BP |
1531 | int error; |
1532 | ||
e1b1d06a | 1533 | error = ofproto->ofproto_class->port_add(ofproto, netdev); |
1fa24dea | 1534 | if (!error) { |
e1b1d06a JP |
1535 | const char *netdev_name = netdev_get_name(netdev); |
1536 | ||
4e022ec0 AW |
1537 | simap_put(&ofproto->ofp_requests, netdev_name, |
1538 | ofp_to_u16(ofp_port)); | |
e1b1d06a | 1539 | update_port(ofproto, netdev_name); |
1fa24dea | 1540 | } |
b5827b24 | 1541 | if (ofp_portp) { |
e1b1d06a JP |
1542 | struct ofproto_port ofproto_port; |
1543 | ||
1544 | ofproto_port_query_by_name(ofproto, netdev_get_name(netdev), | |
1545 | &ofproto_port); | |
1546 | *ofp_portp = error ? OFPP_NONE : ofproto_port.ofp_port; | |
1547 | ofproto_port_destroy(&ofproto_port); | |
3a6ccc8c BP |
1548 | } |
1549 | return error; | |
1550 | } | |
1551 | ||
b5827b24 BP |
1552 | /* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and |
1553 | * initializes '*port' appropriately; on failure, returns a positive errno | |
1554 | * value. | |
1555 | * | |
abe529af | 1556 | * The caller owns the data in 'ofproto_port' and must free it with |
b5827b24 BP |
1557 | * ofproto_port_destroy() when it is no longer needed. */ |
1558 | int | |
1559 | ofproto_port_query_by_name(const struct ofproto *ofproto, const char *devname, | |
1560 | struct ofproto_port *port) | |
a4e2e1f2 | 1561 | { |
b5827b24 BP |
1562 | int error; |
1563 | ||
abe529af BP |
1564 | error = ofproto->ofproto_class->port_query_by_name(ofproto, devname, port); |
1565 | if (error) { | |
1566 | memset(port, 0, sizeof *port); | |
b5827b24 BP |
1567 | } |
1568 | return error; | |
a4e2e1f2 EJ |
1569 | } |
1570 | ||
b5827b24 | 1571 | /* Deletes port number 'ofp_port' from the datapath for 'ofproto'. |
3a6ccc8c | 1572 | * Returns 0 if successful, otherwise a positive errno. */ |
064af421 | 1573 | int |
4e022ec0 | 1574 | ofproto_port_del(struct ofproto *ofproto, ofp_port_t ofp_port) |
064af421 | 1575 | { |
abe529af | 1576 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1264ec95 | 1577 | const char *name = ofport ? netdev_get_name(ofport->netdev) : "<unknown>"; |
e1b1d06a | 1578 | struct simap_node *ofp_request_node; |
3cf10406 | 1579 | int error; |
cdee00fd | 1580 | |
e1b1d06a JP |
1581 | ofp_request_node = simap_find(&ofproto->ofp_requests, name); |
1582 | if (ofp_request_node) { | |
1583 | simap_delete(&ofproto->ofp_requests, ofp_request_node); | |
1584 | } | |
1585 | ||
abe529af | 1586 | error = ofproto->ofproto_class->port_del(ofproto, ofp_port); |
892815f5 | 1587 | if (!error && ofport) { |
1264ec95 BP |
1588 | /* 'name' is the netdev's name and update_port() is going to close the |
1589 | * netdev. Just in case update_port() refers to 'name' after it | |
3a6ccc8c BP |
1590 | * destroys 'ofport', make a copy of it around the update_port() |
1591 | * call. */ | |
1592 | char *devname = xstrdup(name); | |
1593 | update_port(ofproto, devname); | |
1594 | free(devname); | |
3cf10406 BP |
1595 | } |
1596 | return error; | |
064af421 BP |
1597 | } |
1598 | ||
6c1491fb | 1599 | /* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and |
fa8b054f BP |
1600 | * performs the 'n_actions' actions in 'actions'. The new flow will not |
1601 | * timeout. | |
1602 | * | |
1603 | * If cls_rule->priority is in the range of priorities supported by OpenFlow | |
1604 | * (0...65535, inclusive) then the flow will be visible to OpenFlow | |
1605 | * controllers; otherwise, it will be hidden. | |
1606 | * | |
f25d0cf3 | 1607 | * The caller retains ownership of 'cls_rule' and 'ofpacts'. |
6c1491fb BP |
1608 | * |
1609 | * This is a helper function for in-band control and fail-open. */ | |
064af421 | 1610 | void |
81a76618 BP |
1611 | ofproto_add_flow(struct ofproto *ofproto, const struct match *match, |
1612 | unsigned int priority, | |
f25d0cf3 | 1613 | const struct ofpact *ofpacts, size_t ofpacts_len) |
064af421 | 1614 | { |
7ee20df1 BP |
1615 | const struct rule *rule; |
1616 | ||
81a76618 BP |
1617 | rule = rule_from_cls_rule(classifier_find_match_exactly( |
1618 | &ofproto->tables[0].cls, match, priority)); | |
f25d0cf3 BP |
1619 | if (!rule || !ofpacts_equal(rule->ofpacts, rule->ofpacts_len, |
1620 | ofpacts, ofpacts_len)) { | |
a9a2da38 | 1621 | struct ofputil_flow_mod fm; |
7ee20df1 BP |
1622 | |
1623 | memset(&fm, 0, sizeof fm); | |
81a76618 BP |
1624 | fm.match = *match; |
1625 | fm.priority = priority; | |
7ee20df1 | 1626 | fm.buffer_id = UINT32_MAX; |
f25d0cf3 BP |
1627 | fm.ofpacts = xmemdup(ofpacts, ofpacts_len); |
1628 | fm.ofpacts_len = ofpacts_len; | |
7ee20df1 | 1629 | add_flow(ofproto, NULL, &fm, NULL); |
f25d0cf3 | 1630 | free(fm.ofpacts); |
7ee20df1 | 1631 | } |
064af421 BP |
1632 | } |
1633 | ||
75a75043 | 1634 | /* Executes the flow modification specified in 'fm'. Returns 0 on success, an |
90bf1e07 BP |
1635 | * OFPERR_* OpenFlow error code on failure, or OFPROTO_POSTPONE if the |
1636 | * operation cannot be initiated now but may be retried later. | |
75a75043 BP |
1637 | * |
1638 | * This is a helper function for in-band control and fail-open. */ | |
1639 | int | |
e3b56933 | 1640 | ofproto_flow_mod(struct ofproto *ofproto, struct ofputil_flow_mod *fm) |
75a75043 BP |
1641 | { |
1642 | return handle_flow_mod__(ofproto, NULL, fm, NULL); | |
1643 | } | |
1644 | ||
6c1491fb BP |
1645 | /* Searches for a rule with matching criteria exactly equal to 'target' in |
1646 | * ofproto's table 0 and, if it finds one, deletes it. | |
1647 | * | |
1648 | * This is a helper function for in-band control and fail-open. */ | |
7ee20df1 | 1649 | bool |
81a76618 BP |
1650 | ofproto_delete_flow(struct ofproto *ofproto, |
1651 | const struct match *target, unsigned int priority) | |
064af421 BP |
1652 | { |
1653 | struct rule *rule; | |
1654 | ||
81a76618 BP |
1655 | rule = rule_from_cls_rule(classifier_find_match_exactly( |
1656 | &ofproto->tables[0].cls, target, priority)); | |
7ee20df1 BP |
1657 | if (!rule) { |
1658 | /* No such rule -> success. */ | |
1659 | return true; | |
1660 | } else if (rule->pending) { | |
1661 | /* An operation on the rule is already pending -> failure. | |
1662 | * Caller must retry later if it's important. */ | |
1663 | return false; | |
1664 | } else { | |
1665 | /* Initiate deletion -> success. */ | |
7024dffe | 1666 | struct ofopgroup *group = ofopgroup_create_unattached(ofproto); |
2b07c8b1 | 1667 | ofoperation_create(group, rule, OFOPERATION_DELETE, OFPRR_DELETE); |
d0918789 | 1668 | oftable_remove_rule(rule); |
254750ce | 1669 | ofproto->ofproto_class->rule_destruct(rule); |
7ee20df1 BP |
1670 | ofopgroup_submit(group); |
1671 | return true; | |
bcf84111 | 1672 | } |
5ecc9d81 | 1673 | |
142e1f5c BP |
1674 | } |
1675 | ||
7ee20df1 BP |
1676 | /* Starts the process of deleting all of the flows from all of ofproto's flow |
1677 | * tables and then reintroducing the flows required by in-band control and | |
1678 | * fail-open. The process will complete in a later call to ofproto_run(). */ | |
142e1f5c BP |
1679 | void |
1680 | ofproto_flush_flows(struct ofproto *ofproto) | |
1681 | { | |
7ee20df1 BP |
1682 | COVERAGE_INC(ofproto_flush); |
1683 | ofproto->state = S_FLUSH; | |
064af421 BP |
1684 | } |
1685 | \f | |
1686 | static void | |
1687 | reinit_ports(struct ofproto *p) | |
1688 | { | |
abe529af | 1689 | struct ofproto_port_dump dump; |
b3c01ed3 | 1690 | struct sset devnames; |
064af421 | 1691 | struct ofport *ofport; |
abe529af | 1692 | struct ofproto_port ofproto_port; |
b3c01ed3 | 1693 | const char *devname; |
064af421 | 1694 | |
898bf89d JP |
1695 | COVERAGE_INC(ofproto_reinit_ports); |
1696 | ||
b3c01ed3 | 1697 | sset_init(&devnames); |
4e8e4213 | 1698 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { |
1264ec95 | 1699 | sset_add(&devnames, netdev_get_name(ofport->netdev)); |
064af421 | 1700 | } |
abe529af BP |
1701 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { |
1702 | sset_add(&devnames, ofproto_port.name); | |
064af421 | 1703 | } |
064af421 | 1704 | |
b3c01ed3 BP |
1705 | SSET_FOR_EACH (devname, &devnames) { |
1706 | update_port(p, devname); | |
064af421 | 1707 | } |
b3c01ed3 | 1708 | sset_destroy(&devnames); |
064af421 BP |
1709 | } |
1710 | ||
4e022ec0 | 1711 | static ofp_port_t |
e1b1d06a JP |
1712 | alloc_ofp_port(struct ofproto *ofproto, const char *netdev_name) |
1713 | { | |
4e022ec0 AW |
1714 | uint16_t max_ports = ofp_to_u16(ofproto->max_ports); |
1715 | uint16_t port_idx; | |
e1b1d06a | 1716 | |
4e022ec0 AW |
1717 | port_idx = simap_get(&ofproto->ofp_requests, netdev_name); |
1718 | if (!port_idx) { | |
1719 | port_idx = UINT16_MAX; | |
1720 | } | |
1721 | ||
1722 | if (port_idx >= max_ports | |
1723 | || bitmap_is_set(ofproto->ofp_port_ids, port_idx)) { | |
1724 | uint16_t end_port_no = ofp_to_u16(ofproto->alloc_port_no); | |
1725 | uint16_t alloc_port_no = end_port_no; | |
e1b1d06a | 1726 | |
e1b1d06a JP |
1727 | /* Search for a free OpenFlow port number. We try not to |
1728 | * immediately reuse them to prevent problems due to old | |
1729 | * flows. */ | |
6033d9d9 | 1730 | for (;;) { |
4e022ec0 AW |
1731 | if (++alloc_port_no >= max_ports) { |
1732 | alloc_port_no = 0; | |
6033d9d9 | 1733 | } |
4e022ec0 AW |
1734 | if (!bitmap_is_set(ofproto->ofp_port_ids, alloc_port_no)) { |
1735 | port_idx = alloc_port_no; | |
1736 | ofproto->alloc_port_no = u16_to_ofp(alloc_port_no); | |
6033d9d9 | 1737 | break; |
e1b1d06a | 1738 | } |
4e022ec0 | 1739 | if (alloc_port_no == end_port_no) { |
6033d9d9 | 1740 | return OFPP_NONE; |
e1b1d06a JP |
1741 | } |
1742 | } | |
1743 | } | |
4e022ec0 AW |
1744 | bitmap_set1(ofproto->ofp_port_ids, port_idx); |
1745 | return u16_to_ofp(port_idx); | |
e1b1d06a JP |
1746 | } |
1747 | ||
1748 | static void | |
4e022ec0 | 1749 | dealloc_ofp_port(const struct ofproto *ofproto, ofp_port_t ofp_port) |
e1b1d06a | 1750 | { |
4e022ec0 AW |
1751 | if (ofp_to_u16(ofp_port) < ofp_to_u16(ofproto->max_ports)) { |
1752 | bitmap_set0(ofproto->ofp_port_ids, ofp_to_u16(ofp_port)); | |
40fa9417 | 1753 | } |
e1b1d06a JP |
1754 | } |
1755 | ||
fbfa2911 BP |
1756 | /* Opens and returns a netdev for 'ofproto_port' in 'ofproto', or a null |
1757 | * pointer if the netdev cannot be opened. On success, also fills in | |
1758 | * 'opp'. */ | |
b33951b8 | 1759 | static struct netdev * |
e1b1d06a JP |
1760 | ofport_open(struct ofproto *ofproto, |
1761 | struct ofproto_port *ofproto_port, | |
9e1fd49b | 1762 | struct ofputil_phy_port *pp) |
064af421 BP |
1763 | { |
1764 | enum netdev_flags flags; | |
064af421 | 1765 | struct netdev *netdev; |
064af421 BP |
1766 | int error; |
1767 | ||
18812dff | 1768 | error = netdev_open(ofproto_port->name, ofproto_port->type, &netdev); |
064af421 | 1769 | if (error) { |
fbfa2911 | 1770 | VLOG_WARN_RL(&rl, "%s: ignoring port %s (%"PRIu16") because netdev %s " |
064af421 | 1771 | "cannot be opened (%s)", |
fbfa2911 | 1772 | ofproto->name, |
abe529af | 1773 | ofproto_port->name, ofproto_port->ofp_port, |
10a89ef0 | 1774 | ofproto_port->name, ovs_strerror(error)); |
064af421 BP |
1775 | return NULL; |
1776 | } | |
1777 | ||
e1b1d06a JP |
1778 | if (ofproto_port->ofp_port == OFPP_NONE) { |
1779 | if (!strcmp(ofproto->name, ofproto_port->name)) { | |
1780 | ofproto_port->ofp_port = OFPP_LOCAL; | |
1781 | } else { | |
1782 | ofproto_port->ofp_port = alloc_ofp_port(ofproto, | |
1783 | ofproto_port->name); | |
1784 | } | |
1785 | } | |
9e1fd49b BP |
1786 | pp->port_no = ofproto_port->ofp_port; |
1787 | netdev_get_etheraddr(netdev, pp->hw_addr); | |
1788 | ovs_strlcpy(pp->name, ofproto_port->name, sizeof pp->name); | |
064af421 | 1789 | netdev_get_flags(netdev, &flags); |
9e1fd49b BP |
1790 | pp->config = flags & NETDEV_UP ? 0 : OFPUTIL_PC_PORT_DOWN; |
1791 | pp->state = netdev_get_carrier(netdev) ? 0 : OFPUTIL_PS_LINK_DOWN; | |
1792 | netdev_get_features(netdev, &pp->curr, &pp->advertised, | |
1793 | &pp->supported, &pp->peer); | |
d02a5f8e BP |
1794 | pp->curr_speed = netdev_features_to_bps(pp->curr, 0); |
1795 | pp->max_speed = netdev_features_to_bps(pp->supported, 0); | |
118c4676 | 1796 | |
b33951b8 | 1797 | return netdev; |
064af421 BP |
1798 | } |
1799 | ||
b33951b8 | 1800 | /* Returns true if most fields of 'a' and 'b' are equal. Differences in name, |
9e1fd49b | 1801 | * port number, and 'config' bits other than OFPUTIL_PS_LINK_DOWN are |
b33951b8 BP |
1802 | * disregarded. */ |
1803 | static bool | |
9e1fd49b BP |
1804 | ofport_equal(const struct ofputil_phy_port *a, |
1805 | const struct ofputil_phy_port *b) | |
064af421 | 1806 | { |
9e1fd49b | 1807 | return (eth_addr_equals(a->hw_addr, b->hw_addr) |
064af421 | 1808 | && a->state == b->state |
9e1fd49b | 1809 | && !((a->config ^ b->config) & OFPUTIL_PC_PORT_DOWN) |
064af421 BP |
1810 | && a->curr == b->curr |
1811 | && a->advertised == b->advertised | |
1812 | && a->supported == b->supported | |
9e1fd49b BP |
1813 | && a->peer == b->peer |
1814 | && a->curr_speed == b->curr_speed | |
1815 | && a->max_speed == b->max_speed); | |
064af421 BP |
1816 | } |
1817 | ||
b33951b8 BP |
1818 | /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'. |
1819 | * The caller must ensure that 'p' does not have a conflicting ofport (that is, | |
1820 | * one with the same name or port number). */ | |
064af421 | 1821 | static void |
b33951b8 | 1822 | ofport_install(struct ofproto *p, |
9e1fd49b | 1823 | struct netdev *netdev, const struct ofputil_phy_port *pp) |
064af421 | 1824 | { |
b33951b8 BP |
1825 | const char *netdev_name = netdev_get_name(netdev); |
1826 | struct ofport *ofport; | |
abe529af | 1827 | int error; |
72b06300 | 1828 | |
b33951b8 | 1829 | /* Create ofport. */ |
abe529af BP |
1830 | ofport = p->ofproto_class->port_alloc(); |
1831 | if (!ofport) { | |
1832 | error = ENOMEM; | |
1833 | goto error; | |
1834 | } | |
0f7d71a5 | 1835 | ofport->ofproto = p; |
b33951b8 | 1836 | ofport->netdev = netdev; |
031d8bff | 1837 | ofport->change_seq = netdev_change_seq(netdev); |
9e1fd49b BP |
1838 | ofport->pp = *pp; |
1839 | ofport->ofp_port = pp->port_no; | |
65e0be10 | 1840 | ofport->created = time_msec(); |
b33951b8 BP |
1841 | |
1842 | /* Add port to 'p'. */ | |
4e022ec0 | 1843 | hmap_insert(&p->ports, &ofport->hmap_node, |
f9c0c3ec | 1844 | hash_ofp_port(ofport->ofp_port)); |
72b06300 | 1845 | shash_add(&p->port_by_name, netdev_name, ofport); |
abe529af | 1846 | |
ada3428f | 1847 | update_mtu(p, ofport); |
9197df76 | 1848 | |
abe529af BP |
1849 | /* Let the ofproto_class initialize its private data. */ |
1850 | error = p->ofproto_class->port_construct(ofport); | |
1851 | if (error) { | |
1852 | goto error; | |
1853 | } | |
9e1fd49b | 1854 | connmgr_send_port_status(p->connmgr, pp, OFPPR_ADD); |
abe529af BP |
1855 | return; |
1856 | ||
1857 | error: | |
1858 | VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)", | |
10a89ef0 | 1859 | p->name, netdev_name, ovs_strerror(error)); |
abe529af BP |
1860 | if (ofport) { |
1861 | ofport_destroy__(ofport); | |
1862 | } else { | |
1863 | netdev_close(netdev); | |
72b06300 | 1864 | } |
064af421 BP |
1865 | } |
1866 | ||
b33951b8 | 1867 | /* Removes 'ofport' from 'p' and destroys it. */ |
064af421 | 1868 | static void |
0f7d71a5 | 1869 | ofport_remove(struct ofport *ofport) |
064af421 | 1870 | { |
9e1fd49b | 1871 | connmgr_send_port_status(ofport->ofproto->connmgr, &ofport->pp, |
fa066f01 | 1872 | OFPPR_DELETE); |
abe529af | 1873 | ofport_destroy(ofport); |
b33951b8 BP |
1874 | } |
1875 | ||
1876 | /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and | |
1877 | * destroys it. */ | |
1878 | static void | |
1879 | ofport_remove_with_name(struct ofproto *ofproto, const char *name) | |
1880 | { | |
1881 | struct ofport *port = shash_find_data(&ofproto->port_by_name, name); | |
1882 | if (port) { | |
0f7d71a5 | 1883 | ofport_remove(port); |
b33951b8 BP |
1884 | } |
1885 | } | |
1886 | ||
9e1fd49b | 1887 | /* Updates 'port' with new 'pp' description. |
b33951b8 BP |
1888 | * |
1889 | * Does not handle a name or port number change. The caller must implement | |
1890 | * such a change as a delete followed by an add. */ | |
1891 | static void | |
9e1fd49b | 1892 | ofport_modified(struct ofport *port, struct ofputil_phy_port *pp) |
b33951b8 | 1893 | { |
9e1fd49b BP |
1894 | memcpy(port->pp.hw_addr, pp->hw_addr, ETH_ADDR_LEN); |
1895 | port->pp.config = ((port->pp.config & ~OFPUTIL_PC_PORT_DOWN) | |
1896 | | (pp->config & OFPUTIL_PC_PORT_DOWN)); | |
1897 | port->pp.state = pp->state; | |
1898 | port->pp.curr = pp->curr; | |
1899 | port->pp.advertised = pp->advertised; | |
1900 | port->pp.supported = pp->supported; | |
1901 | port->pp.peer = pp->peer; | |
1902 | port->pp.curr_speed = pp->curr_speed; | |
1903 | port->pp.max_speed = pp->max_speed; | |
b33951b8 | 1904 | |
9e1fd49b | 1905 | connmgr_send_port_status(port->ofproto->connmgr, &port->pp, OFPPR_MODIFY); |
064af421 BP |
1906 | } |
1907 | ||
5a2dfd47 JP |
1908 | /* Update OpenFlow 'state' in 'port' and notify controller. */ |
1909 | void | |
9e1fd49b | 1910 | ofproto_port_set_state(struct ofport *port, enum ofputil_port_state state) |
5a2dfd47 | 1911 | { |
9e1fd49b BP |
1912 | if (port->pp.state != state) { |
1913 | port->pp.state = state; | |
1914 | connmgr_send_port_status(port->ofproto->connmgr, &port->pp, | |
5a2dfd47 JP |
1915 | OFPPR_MODIFY); |
1916 | } | |
1917 | } | |
1918 | ||
abe529af | 1919 | void |
4e022ec0 | 1920 | ofproto_port_unregister(struct ofproto *ofproto, ofp_port_t ofp_port) |
e7934396 | 1921 | { |
abe529af BP |
1922 | struct ofport *port = ofproto_get_port(ofproto, ofp_port); |
1923 | if (port) { | |
52a90c29 BP |
1924 | if (port->ofproto->ofproto_class->set_realdev) { |
1925 | port->ofproto->ofproto_class->set_realdev(port, 0, 0); | |
1926 | } | |
b308140a JP |
1927 | if (port->ofproto->ofproto_class->set_stp_port) { |
1928 | port->ofproto->ofproto_class->set_stp_port(port, NULL); | |
1929 | } | |
abe529af | 1930 | if (port->ofproto->ofproto_class->set_cfm) { |
a5610457 | 1931 | port->ofproto->ofproto_class->set_cfm(port, NULL); |
abe529af BP |
1932 | } |
1933 | if (port->ofproto->ofproto_class->bundle_remove) { | |
1934 | port->ofproto->ofproto_class->bundle_remove(port); | |
e7934396 BP |
1935 | } |
1936 | } | |
1937 | } | |
1938 | ||
1939 | static void | |
abe529af | 1940 | ofport_destroy__(struct ofport *port) |
e7934396 | 1941 | { |
abe529af BP |
1942 | struct ofproto *ofproto = port->ofproto; |
1943 | const char *name = netdev_get_name(port->netdev); | |
fa066f01 | 1944 | |
abe529af BP |
1945 | hmap_remove(&ofproto->ports, &port->hmap_node); |
1946 | shash_delete(&ofproto->port_by_name, | |
1947 | shash_find(&ofproto->port_by_name, name)); | |
fa066f01 | 1948 | |
abe529af BP |
1949 | netdev_close(port->netdev); |
1950 | ofproto->ofproto_class->port_dealloc(port); | |
e7934396 BP |
1951 | } |
1952 | ||
064af421 | 1953 | static void |
abe529af | 1954 | ofport_destroy(struct ofport *port) |
064af421 | 1955 | { |
fa066f01 | 1956 | if (port) { |
e1b1d06a | 1957 | dealloc_ofp_port(port->ofproto, port->ofp_port); |
abe529af BP |
1958 | port->ofproto->ofproto_class->port_destruct(port); |
1959 | ofport_destroy__(port); | |
1960 | } | |
064af421 BP |
1961 | } |
1962 | ||
abe529af | 1963 | struct ofport * |
4e022ec0 | 1964 | ofproto_get_port(const struct ofproto *ofproto, ofp_port_t ofp_port) |
ca0f572c BP |
1965 | { |
1966 | struct ofport *port; | |
1967 | ||
f9c0c3ec | 1968 | HMAP_FOR_EACH_IN_BUCKET (port, hmap_node, hash_ofp_port(ofp_port), |
4e022ec0 | 1969 | &ofproto->ports) { |
abe529af | 1970 | if (port->ofp_port == ofp_port) { |
ca0f572c BP |
1971 | return port; |
1972 | } | |
1973 | } | |
1974 | return NULL; | |
1975 | } | |
1976 | ||
6527c598 PS |
1977 | int |
1978 | ofproto_port_get_stats(const struct ofport *port, struct netdev_stats *stats) | |
1979 | { | |
1980 | struct ofproto *ofproto = port->ofproto; | |
1981 | int error; | |
1982 | ||
1983 | if (ofproto->ofproto_class->port_get_stats) { | |
1984 | error = ofproto->ofproto_class->port_get_stats(port, stats); | |
1985 | } else { | |
1986 | error = EOPNOTSUPP; | |
1987 | } | |
1988 | ||
1989 | return error; | |
1990 | } | |
1991 | ||
064af421 | 1992 | static void |
b33951b8 | 1993 | update_port(struct ofproto *ofproto, const char *name) |
064af421 | 1994 | { |
abe529af | 1995 | struct ofproto_port ofproto_port; |
9e1fd49b | 1996 | struct ofputil_phy_port pp; |
b33951b8 BP |
1997 | struct netdev *netdev; |
1998 | struct ofport *port; | |
064af421 BP |
1999 | |
2000 | COVERAGE_INC(ofproto_update_port); | |
c874dc6d | 2001 | |
b33951b8 | 2002 | /* Fetch 'name''s location and properties from the datapath. */ |
abe529af | 2003 | netdev = (!ofproto_port_query_by_name(ofproto, name, &ofproto_port) |
fbfa2911 | 2004 | ? ofport_open(ofproto, &ofproto_port, &pp) |
b33951b8 | 2005 | : NULL); |
4e022ec0 | 2006 | |
b33951b8 | 2007 | if (netdev) { |
abe529af | 2008 | port = ofproto_get_port(ofproto, ofproto_port.ofp_port); |
b33951b8 | 2009 | if (port && !strcmp(netdev_get_name(port->netdev), name)) { |
e65942a0 BP |
2010 | struct netdev *old_netdev = port->netdev; |
2011 | ||
b33951b8 | 2012 | /* 'name' hasn't changed location. Any properties changed? */ |
9e1fd49b BP |
2013 | if (!ofport_equal(&port->pp, &pp)) { |
2014 | ofport_modified(port, &pp); | |
abe529af BP |
2015 | } |
2016 | ||
ada3428f | 2017 | update_mtu(ofproto, port); |
9197df76 | 2018 | |
e65942a0 BP |
2019 | /* Install the newly opened netdev in case it has changed. |
2020 | * Don't close the old netdev yet in case port_modified has to | |
2021 | * remove a retained reference to it.*/ | |
abe529af | 2022 | port->netdev = netdev; |
031d8bff | 2023 | port->change_seq = netdev_change_seq(netdev); |
abe529af BP |
2024 | |
2025 | if (port->ofproto->ofproto_class->port_modified) { | |
2026 | port->ofproto->ofproto_class->port_modified(port); | |
b33951b8 | 2027 | } |
e65942a0 BP |
2028 | |
2029 | netdev_close(old_netdev); | |
b33951b8 BP |
2030 | } else { |
2031 | /* If 'port' is nonnull then its name differs from 'name' and thus | |
2032 | * we should delete it. If we think there's a port named 'name' | |
2033 | * then its port number must be wrong now so delete it too. */ | |
2034 | if (port) { | |
0f7d71a5 | 2035 | ofport_remove(port); |
b33951b8 BP |
2036 | } |
2037 | ofport_remove_with_name(ofproto, name); | |
9e1fd49b | 2038 | ofport_install(ofproto, netdev, &pp); |
c874dc6d | 2039 | } |
b33951b8 BP |
2040 | } else { |
2041 | /* Any port named 'name' is gone now. */ | |
2042 | ofport_remove_with_name(ofproto, name); | |
c874dc6d | 2043 | } |
abe529af | 2044 | ofproto_port_destroy(&ofproto_port); |
064af421 BP |
2045 | } |
2046 | ||
2047 | static int | |
2048 | init_ports(struct ofproto *p) | |
2049 | { | |
abe529af BP |
2050 | struct ofproto_port_dump dump; |
2051 | struct ofproto_port ofproto_port; | |
e1b1d06a | 2052 | struct shash_node *node, *next; |
abe529af BP |
2053 | |
2054 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { | |
e1b1d06a JP |
2055 | const char *name = ofproto_port.name; |
2056 | ||
2057 | if (shash_find(&p->port_by_name, name)) { | |
fbfa2911 | 2058 | VLOG_WARN_RL(&rl, "%s: ignoring duplicate device %s in datapath", |
e1b1d06a | 2059 | p->name, name); |
abe529af | 2060 | } else { |
9e1fd49b | 2061 | struct ofputil_phy_port pp; |
b33951b8 BP |
2062 | struct netdev *netdev; |
2063 | ||
e1b1d06a JP |
2064 | /* Check if an OpenFlow port number had been requested. */ |
2065 | node = shash_find(&init_ofp_ports, name); | |
2066 | if (node) { | |
2067 | const struct iface_hint *iface_hint = node->data; | |
4e022ec0 AW |
2068 | simap_put(&p->ofp_requests, name, |
2069 | ofp_to_u16(iface_hint->ofp_port)); | |
e1b1d06a JP |
2070 | } |
2071 | ||
fbfa2911 | 2072 | netdev = ofport_open(p, &ofproto_port, &pp); |
b33951b8 | 2073 | if (netdev) { |
9e1fd49b | 2074 | ofport_install(p, netdev, &pp); |
064af421 BP |
2075 | } |
2076 | } | |
2077 | } | |
b0ec0f27 | 2078 | |
e1b1d06a | 2079 | SHASH_FOR_EACH_SAFE(node, next, &init_ofp_ports) { |
4f9e08a5 | 2080 | struct iface_hint *iface_hint = node->data; |
e1b1d06a JP |
2081 | |
2082 | if (!strcmp(iface_hint->br_name, p->name)) { | |
2083 | free(iface_hint->br_name); | |
2084 | free(iface_hint->br_type); | |
4f9e08a5 | 2085 | free(iface_hint); |
e1b1d06a JP |
2086 | shash_delete(&init_ofp_ports, node); |
2087 | } | |
2088 | } | |
2089 | ||
064af421 BP |
2090 | return 0; |
2091 | } | |
9197df76 JP |
2092 | |
2093 | /* Find the minimum MTU of all non-datapath devices attached to 'p'. | |
2094 | * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */ | |
2095 | static int | |
2096 | find_min_mtu(struct ofproto *p) | |
2097 | { | |
2098 | struct ofport *ofport; | |
2099 | int mtu = 0; | |
2100 | ||
2101 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2102 | struct netdev *netdev = ofport->netdev; | |
2103 | int dev_mtu; | |
2104 | ||
2105 | /* Skip any internal ports, since that's what we're trying to | |
2106 | * set. */ | |
2107 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
2108 | continue; | |
2109 | } | |
2110 | ||
2111 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2112 | continue; | |
2113 | } | |
2114 | if (!mtu || dev_mtu < mtu) { | |
2115 | mtu = dev_mtu; | |
2116 | } | |
2117 | } | |
2118 | ||
2119 | return mtu ? mtu: ETH_PAYLOAD_MAX; | |
2120 | } | |
2121 | ||
ada3428f PS |
2122 | /* Update MTU of all datapath devices on 'p' to the minimum of the |
2123 | * non-datapath ports in event of 'port' added or changed. */ | |
9197df76 | 2124 | static void |
ada3428f | 2125 | update_mtu(struct ofproto *p, struct ofport *port) |
9197df76 JP |
2126 | { |
2127 | struct ofport *ofport; | |
ada3428f PS |
2128 | struct netdev *netdev = port->netdev; |
2129 | int dev_mtu, old_min; | |
2130 | ||
2131 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2132 | port->mtu = 0; | |
2133 | return; | |
2134 | } | |
2135 | if (!strcmp(netdev_get_type(port->netdev), "internal")) { | |
2136 | if (dev_mtu > p->min_mtu) { | |
2137 | if (!netdev_set_mtu(port->netdev, p->min_mtu)) { | |
2138 | dev_mtu = p->min_mtu; | |
2139 | } | |
2140 | } | |
2141 | port->mtu = dev_mtu; | |
2142 | return; | |
2143 | } | |
2144 | ||
2145 | /* For non-internal port find new min mtu. */ | |
2146 | old_min = p->min_mtu; | |
2147 | port->mtu = dev_mtu; | |
2148 | p->min_mtu = find_min_mtu(p); | |
2149 | if (p->min_mtu == old_min) { | |
2150 | return; | |
2151 | } | |
9197df76 JP |
2152 | |
2153 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2154 | struct netdev *netdev = ofport->netdev; | |
2155 | ||
2156 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
ada3428f PS |
2157 | if (!netdev_set_mtu(netdev, p->min_mtu)) { |
2158 | ofport->mtu = p->min_mtu; | |
2159 | } | |
9197df76 JP |
2160 | } |
2161 | } | |
2162 | } | |
064af421 | 2163 | \f |
064af421 | 2164 | static void |
abe529af | 2165 | ofproto_rule_destroy__(struct rule *rule) |
064af421 | 2166 | { |
1eae3d33 | 2167 | if (rule) { |
48d28ac1 | 2168 | cls_rule_destroy(&rule->cr); |
f25d0cf3 | 2169 | free(rule->ofpacts); |
a3779dbc | 2170 | ovs_mutex_destroy(&rule->timeout_mutex); |
1eae3d33 BP |
2171 | rule->ofproto->ofproto_class->rule_dealloc(rule); |
2172 | } | |
064af421 BP |
2173 | } |
2174 | ||
7ee20df1 BP |
2175 | /* This function allows an ofproto implementation to destroy any rules that |
2176 | * remain when its ->destruct() function is called. The caller must have | |
2177 | * already uninitialized any derived members of 'rule' (step 5 described in the | |
5bee6e26 JP |
2178 | * large comment in ofproto/ofproto-provider.h titled "Life Cycle"). |
2179 | * This function implements steps 6 and 7. | |
7ee20df1 BP |
2180 | * |
2181 | * This function should only be called from an ofproto implementation's | |
2182 | * ->destruct() function. It is not suitable elsewhere. */ | |
abe529af BP |
2183 | void |
2184 | ofproto_rule_destroy(struct rule *rule) | |
064af421 | 2185 | { |
cb22974d | 2186 | ovs_assert(!rule->pending); |
d0918789 | 2187 | oftable_remove_rule(rule); |
7ee20df1 | 2188 | ofproto_rule_destroy__(rule); |
064af421 BP |
2189 | } |
2190 | ||
bcf84111 | 2191 | /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action |
f25d0cf3 | 2192 | * that outputs to 'port' (output to OFPP_FLOOD and OFPP_ALL doesn't count). */ |
2b07c8b1 | 2193 | bool |
4e022ec0 | 2194 | ofproto_rule_has_out_port(const struct rule *rule, ofp_port_t port) |
064af421 | 2195 | { |
7f05e7ab | 2196 | return (port == OFPP_ANY |
f25d0cf3 | 2197 | || ofpacts_output_to_port(rule->ofpacts, rule->ofpacts_len, port)); |
064af421 BP |
2198 | } |
2199 | ||
2b07c8b1 BP |
2200 | /* Returns true if a rule related to 'op' has an OpenFlow OFPAT_OUTPUT or |
2201 | * OFPAT_ENQUEUE action that outputs to 'out_port'. */ | |
2202 | bool | |
4e022ec0 | 2203 | ofoperation_has_out_port(const struct ofoperation *op, ofp_port_t out_port) |
2b07c8b1 BP |
2204 | { |
2205 | if (ofproto_rule_has_out_port(op->rule, out_port)) { | |
2206 | return true; | |
2207 | } | |
2208 | ||
2209 | switch (op->type) { | |
2210 | case OFOPERATION_ADD: | |
2211 | return op->victim && ofproto_rule_has_out_port(op->victim, out_port); | |
2212 | ||
2213 | case OFOPERATION_DELETE: | |
2214 | return false; | |
2215 | ||
2216 | case OFOPERATION_MODIFY: | |
2217 | return ofpacts_output_to_port(op->ofpacts, op->ofpacts_len, out_port); | |
2218 | } | |
2219 | ||
2220 | NOT_REACHED(); | |
2221 | } | |
2222 | ||
bcf84111 | 2223 | /* Executes the actions indicated by 'rule' on 'packet' and credits 'rule''s |
bcf84111 | 2224 | * statistics appropriately. 'packet' must have at least sizeof(struct |
31a9e63f | 2225 | * ofp10_packet_in) bytes of headroom. |
064af421 | 2226 | * |
bcf84111 BP |
2227 | * 'packet' doesn't necessarily have to match 'rule'. 'rule' will be credited |
2228 | * with statistics for 'packet' either way. | |
2229 | * | |
2230 | * Takes ownership of 'packet'. */ | |
5bf0e941 | 2231 | static int |
4e022ec0 | 2232 | rule_execute(struct rule *rule, ofp_port_t in_port, struct ofpbuf *packet) |
eedc0097 | 2233 | { |
bcf84111 | 2234 | struct flow flow; |
4e022ec0 | 2235 | union flow_in_port in_port_; |
eedc0097 | 2236 | |
cb22974d | 2237 | ovs_assert(ofpbuf_headroom(packet) >= sizeof(struct ofp10_packet_in)); |
eedc0097 | 2238 | |
4e022ec0 AW |
2239 | in_port_.ofp_port = in_port; |
2240 | flow_extract(packet, 0, 0, NULL, &in_port_, &flow); | |
5bf0e941 | 2241 | return rule->ofproto->ofproto_class->rule_execute(rule, &flow, packet); |
350a665f BP |
2242 | } |
2243 | ||
abe529af BP |
2244 | /* Returns true if 'rule' should be hidden from the controller. |
2245 | * | |
2246 | * Rules with priority higher than UINT16_MAX are set up by ofproto itself | |
2247 | * (e.g. by in-band control) and are intentionally hidden from the | |
2248 | * controller. */ | |
2b07c8b1 BP |
2249 | bool |
2250 | ofproto_rule_is_hidden(const struct rule *rule) | |
b6c9e612 | 2251 | { |
abe529af | 2252 | return rule->cr.priority > UINT16_MAX; |
7b064a79 | 2253 | } |
5c67e4af BP |
2254 | |
2255 | static enum oftable_flags | |
2256 | rule_get_flags(const struct rule *rule) | |
2257 | { | |
2258 | return rule->ofproto->tables[rule->table_id].flags; | |
2259 | } | |
2260 | ||
2261 | static bool | |
2262 | rule_is_modifiable(const struct rule *rule) | |
2263 | { | |
2264 | return !(rule_get_flags(rule) & OFTABLE_READONLY); | |
2265 | } | |
fa066f01 | 2266 | \f |
90bf1e07 | 2267 | static enum ofperr |
d1e2cf21 | 2268 | handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2269 | { |
b0421aa2 | 2270 | ofconn_send_reply(ofconn, make_echo_reply(oh)); |
064af421 | 2271 | return 0; |
064af421 BP |
2272 | } |
2273 | ||
90bf1e07 | 2274 | static enum ofperr |
d1e2cf21 | 2275 | handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2276 | { |
64ff1d96 | 2277 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
9e1fd49b | 2278 | struct ofputil_switch_features features; |
064af421 | 2279 | struct ofport *port; |
6c1491fb | 2280 | bool arp_match_ip; |
9e1fd49b | 2281 | struct ofpbuf *b; |
c2f0373a BP |
2282 | int n_tables; |
2283 | int i; | |
064af421 | 2284 | |
9e1fd49b BP |
2285 | ofproto->ofproto_class->get_features(ofproto, &arp_match_ip, |
2286 | &features.actions); | |
cb22974d | 2287 | ovs_assert(features.actions & OFPUTIL_A_OUTPUT); /* sanity check */ |
064af421 | 2288 | |
c2f0373a BP |
2289 | /* Count only non-hidden tables in the number of tables. (Hidden tables, |
2290 | * if present, are always at the end.) */ | |
2291 | n_tables = ofproto->n_tables; | |
2292 | for (i = 0; i < ofproto->n_tables; i++) { | |
2293 | if (ofproto->tables[i].flags & OFTABLE_HIDDEN) { | |
2294 | n_tables = i; | |
2295 | break; | |
2296 | } | |
2297 | } | |
2298 | ||
9e1fd49b BP |
2299 | features.datapath_id = ofproto->datapath_id; |
2300 | features.n_buffers = pktbuf_capacity(); | |
c2f0373a | 2301 | features.n_tables = n_tables; |
9e1fd49b BP |
2302 | features.capabilities = (OFPUTIL_C_FLOW_STATS | OFPUTIL_C_TABLE_STATS | |
2303 | OFPUTIL_C_PORT_STATS | OFPUTIL_C_QUEUE_STATS); | |
6c1491fb | 2304 | if (arp_match_ip) { |
9e1fd49b | 2305 | features.capabilities |= OFPUTIL_C_ARP_MATCH_IP; |
6c1491fb | 2306 | } |
2e1ae200 JR |
2307 | /* FIXME: Fill in proper features.auxiliary_id for auxiliary connections */ |
2308 | features.auxiliary_id = 0; | |
9e1fd49b BP |
2309 | b = ofputil_encode_switch_features(&features, ofconn_get_protocol(ofconn), |
2310 | oh->xid); | |
64ff1d96 | 2311 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
9e1fd49b | 2312 | ofputil_put_switch_features_port(&port->pp, b); |
064af421 | 2313 | } |
064af421 | 2314 | |
9e1fd49b | 2315 | ofconn_send_reply(ofconn, b); |
064af421 BP |
2316 | return 0; |
2317 | } | |
064af421 | 2318 | |
90bf1e07 | 2319 | static enum ofperr |
d1e2cf21 | 2320 | handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2321 | { |
64ff1d96 | 2322 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 | 2323 | struct ofp_switch_config *osc; |
f0fd1a17 | 2324 | enum ofp_config_flags flags; |
7257b535 | 2325 | struct ofpbuf *buf; |
959a2ecd | 2326 | |
064af421 | 2327 | /* Send reply. */ |
982697a4 BP |
2328 | buf = ofpraw_alloc_reply(OFPRAW_OFPT_GET_CONFIG_REPLY, oh, 0); |
2329 | osc = ofpbuf_put_uninit(buf, sizeof *osc); | |
f0fd1a17 | 2330 | flags = ofproto->frag_handling; |
2e1ae200 JR |
2331 | /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */ |
2332 | if (oh->version < OFP13_VERSION | |
2333 | && ofconn_get_invalid_ttl_to_controller(ofconn)) { | |
f0fd1a17 PS |
2334 | flags |= OFPC_INVALID_TTL_TO_CONTROLLER; |
2335 | } | |
2336 | osc->flags = htons(flags); | |
810605a2 | 2337 | osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn)); |
b0421aa2 | 2338 | ofconn_send_reply(ofconn, buf); |
2d70a31a | 2339 | |
064af421 BP |
2340 | return 0; |
2341 | } | |
064af421 | 2342 | |
90bf1e07 | 2343 | static enum ofperr |
982697a4 | 2344 | handle_set_config(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2345 | { |
982697a4 | 2346 | const struct ofp_switch_config *osc = ofpmsg_body(oh); |
64ff1d96 | 2347 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
d1e2cf21 | 2348 | uint16_t flags = ntohs(osc->flags); |
2d70a31a | 2349 | |
7257b535 | 2350 | if (ofconn_get_type(ofconn) != OFCONN_PRIMARY |
f4f1ea7e | 2351 | || ofconn_get_role(ofconn) != OFPCR12_ROLE_SLAVE) { |
7257b535 BP |
2352 | enum ofp_config_flags cur = ofproto->frag_handling; |
2353 | enum ofp_config_flags next = flags & OFPC_FRAG_MASK; | |
2354 | ||
cb22974d | 2355 | ovs_assert((cur & OFPC_FRAG_MASK) == cur); |
7257b535 BP |
2356 | if (cur != next) { |
2357 | if (ofproto->ofproto_class->set_frag_handling(ofproto, next)) { | |
2358 | ofproto->frag_handling = next; | |
2359 | } else { | |
2360 | VLOG_WARN_RL(&rl, "%s: unsupported fragment handling mode %s", | |
2361 | ofproto->name, | |
2362 | ofputil_frag_handling_to_string(next)); | |
2363 | } | |
064af421 BP |
2364 | } |
2365 | } | |
2e1ae200 | 2366 | /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */ |
f0fd1a17 | 2367 | ofconn_set_invalid_ttl_to_controller(ofconn, |
2e1ae200 JR |
2368 | (oh->version < OFP13_VERSION |
2369 | && flags & OFPC_INVALID_TTL_TO_CONTROLLER)); | |
ebe482fd | 2370 | |
810605a2 | 2371 | ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len)); |
0ad9b732 | 2372 | |
064af421 | 2373 | return 0; |
064af421 BP |
2374 | } |
2375 | ||
9deba63b | 2376 | /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow |
90bf1e07 BP |
2377 | * error message code for the caller to propagate upward. Otherwise, returns |
2378 | * 0. | |
2379 | * | |
2380 | * The log message mentions 'msg_type'. */ | |
2381 | static enum ofperr | |
2382 | reject_slave_controller(struct ofconn *ofconn) | |
9deba63b | 2383 | { |
1ce0a5fa | 2384 | if (ofconn_get_type(ofconn) == OFCONN_PRIMARY |
f4f1ea7e | 2385 | && ofconn_get_role(ofconn) == OFPCR12_ROLE_SLAVE) { |
90bf1e07 | 2386 | return OFPERR_OFPBRC_EPERM; |
9deba63b BP |
2387 | } else { |
2388 | return 0; | |
2389 | } | |
2390 | } | |
2391 | ||
9cae45dc JR |
2392 | /* Finds the OFPACT_METER action, if any, in the 'ofpacts_len' bytes of |
2393 | * 'ofpacts'. If found, returns its meter ID; if not, returns 0. | |
2394 | * | |
2395 | * This function relies on the order of 'ofpacts' being correct (as checked by | |
2396 | * ofpacts_verify()). */ | |
2397 | static uint32_t | |
2398 | find_meter(const struct ofpact ofpacts[], size_t ofpacts_len) | |
2399 | { | |
2400 | const struct ofpact *a; | |
2401 | ||
2402 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
2403 | enum ovs_instruction_type inst; | |
2404 | ||
2405 | inst = ovs_instruction_type_from_ofpact_type(a->type); | |
2406 | if (a->type == OFPACT_METER) { | |
2407 | return ofpact_get_METER(a)->meter_id; | |
2408 | } else if (inst > OVSINST_OFPIT13_METER) { | |
2409 | break; | |
2410 | } | |
2411 | } | |
2412 | ||
2413 | return 0; | |
2414 | } | |
2415 | ||
e3b56933 JR |
2416 | /* Checks that the 'ofpacts_len' bytes of actions in 'ofpacts' are appropriate |
2417 | * for a packet with the prerequisites satisfied by 'flow' in table 'table_id'. | |
9cae45dc JR |
2418 | * 'flow' may be temporarily modified, but is restored at return. |
2419 | */ | |
2420 | static enum ofperr | |
2421 | ofproto_check_ofpacts(struct ofproto *ofproto, | |
2422 | const struct ofpact ofpacts[], size_t ofpacts_len, | |
e3b56933 | 2423 | struct flow *flow, uint8_t table_id) |
9cae45dc JR |
2424 | { |
2425 | enum ofperr error; | |
2426 | uint32_t mid; | |
2427 | ||
e3b56933 JR |
2428 | error = ofpacts_check(ofpacts, ofpacts_len, flow, ofproto->max_ports, |
2429 | table_id); | |
9cae45dc JR |
2430 | if (error) { |
2431 | return error; | |
2432 | } | |
2433 | ||
2434 | mid = find_meter(ofpacts, ofpacts_len); | |
2435 | if (mid && ofproto_get_provider_meter_id(ofproto, mid) == UINT32_MAX) { | |
2436 | return OFPERR_OFPMMFC_INVALID_METER; | |
2437 | } | |
2438 | return 0; | |
2439 | } | |
2440 | ||
90bf1e07 | 2441 | static enum ofperr |
982697a4 | 2442 | handle_packet_out(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2443 | { |
64ff1d96 | 2444 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
c6a93eb7 BP |
2445 | struct ofputil_packet_out po; |
2446 | struct ofpbuf *payload; | |
f25d0cf3 BP |
2447 | uint64_t ofpacts_stub[1024 / 8]; |
2448 | struct ofpbuf ofpacts; | |
ae412e7d | 2449 | struct flow flow; |
4e022ec0 | 2450 | union flow_in_port in_port_; |
90bf1e07 | 2451 | enum ofperr error; |
064af421 | 2452 | |
ac51afaf BP |
2453 | COVERAGE_INC(ofproto_packet_out); |
2454 | ||
76589937 | 2455 | error = reject_slave_controller(ofconn); |
9deba63b | 2456 | if (error) { |
f25d0cf3 | 2457 | goto exit; |
9deba63b BP |
2458 | } |
2459 | ||
c6a93eb7 | 2460 | /* Decode message. */ |
f25d0cf3 | 2461 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
982697a4 | 2462 | error = ofputil_decode_packet_out(&po, oh, &ofpacts); |
064af421 | 2463 | if (error) { |
f25d0cf3 | 2464 | goto exit_free_ofpacts; |
064af421 | 2465 | } |
4e022ec0 AW |
2466 | if (ofp_to_u16(po.in_port) >= ofp_to_u16(p->max_ports) |
2467 | && ofp_to_u16(po.in_port) < ofp_to_u16(OFPP_MAX)) { | |
2e1bfcb6 | 2468 | error = OFPERR_OFPBRC_BAD_PORT; |
91858960 BP |
2469 | goto exit_free_ofpacts; |
2470 | } | |
064af421 | 2471 | |
5cb7a798 | 2472 | |
ac51afaf | 2473 | /* Get payload. */ |
c6a93eb7 BP |
2474 | if (po.buffer_id != UINT32_MAX) { |
2475 | error = ofconn_pktbuf_retrieve(ofconn, po.buffer_id, &payload, NULL); | |
2476 | if (error || !payload) { | |
f25d0cf3 | 2477 | goto exit_free_ofpacts; |
064af421 | 2478 | } |
064af421 | 2479 | } else { |
c6a93eb7 BP |
2480 | payload = xmalloc(sizeof *payload); |
2481 | ofpbuf_use_const(payload, po.packet, po.packet_len); | |
e1154f71 BP |
2482 | } |
2483 | ||
548de4dd | 2484 | /* Verify actions against packet, then send packet if successful. */ |
4e022ec0 AW |
2485 | in_port_.ofp_port = po.in_port; |
2486 | flow_extract(payload, 0, 0, NULL, &in_port_, &flow); | |
e3b56933 | 2487 | error = ofproto_check_ofpacts(p, po.ofpacts, po.ofpacts_len, &flow, 0); |
548de4dd BP |
2488 | if (!error) { |
2489 | error = p->ofproto_class->packet_out(p, payload, &flow, | |
2490 | po.ofpacts, po.ofpacts_len); | |
2491 | } | |
c6a93eb7 | 2492 | ofpbuf_delete(payload); |
abe529af | 2493 | |
f25d0cf3 BP |
2494 | exit_free_ofpacts: |
2495 | ofpbuf_uninit(&ofpacts); | |
2496 | exit: | |
abe529af | 2497 | return error; |
064af421 BP |
2498 | } |
2499 | ||
2500 | static void | |
9e1fd49b BP |
2501 | update_port_config(struct ofport *port, |
2502 | enum ofputil_port_config config, | |
2503 | enum ofputil_port_config mask) | |
064af421 | 2504 | { |
9e1fd49b BP |
2505 | enum ofputil_port_config old_config = port->pp.config; |
2506 | enum ofputil_port_config toggle; | |
abe529af | 2507 | |
9e1fd49b BP |
2508 | toggle = (config ^ port->pp.config) & mask; |
2509 | if (toggle & OFPUTIL_PC_PORT_DOWN) { | |
2510 | if (config & OFPUTIL_PC_PORT_DOWN) { | |
4b609110 | 2511 | netdev_turn_flags_off(port->netdev, NETDEV_UP, NULL); |
064af421 | 2512 | } else { |
4b609110 | 2513 | netdev_turn_flags_on(port->netdev, NETDEV_UP, NULL); |
064af421 | 2514 | } |
9e1fd49b | 2515 | toggle &= ~OFPUTIL_PC_PORT_DOWN; |
064af421 | 2516 | } |
abe529af | 2517 | |
9e1fd49b BP |
2518 | port->pp.config ^= toggle; |
2519 | if (port->pp.config != old_config) { | |
abe529af | 2520 | port->ofproto->ofproto_class->port_reconfigured(port, old_config); |
064af421 BP |
2521 | } |
2522 | } | |
2523 | ||
90bf1e07 | 2524 | static enum ofperr |
d1e2cf21 | 2525 | handle_port_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2526 | { |
64ff1d96 | 2527 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
9e1fd49b | 2528 | struct ofputil_port_mod pm; |
064af421 | 2529 | struct ofport *port; |
9e1fd49b | 2530 | enum ofperr error; |
064af421 | 2531 | |
76589937 | 2532 | error = reject_slave_controller(ofconn); |
9deba63b BP |
2533 | if (error) { |
2534 | return error; | |
2535 | } | |
064af421 | 2536 | |
9e1fd49b BP |
2537 | error = ofputil_decode_port_mod(oh, &pm); |
2538 | if (error) { | |
2539 | return error; | |
2540 | } | |
2541 | ||
2542 | port = ofproto_get_port(p, pm.port_no); | |
064af421 | 2543 | if (!port) { |
90bf1e07 | 2544 | return OFPERR_OFPPMFC_BAD_PORT; |
9e1fd49b | 2545 | } else if (!eth_addr_equals(port->pp.hw_addr, pm.hw_addr)) { |
90bf1e07 | 2546 | return OFPERR_OFPPMFC_BAD_HW_ADDR; |
064af421 | 2547 | } else { |
9e1fd49b BP |
2548 | update_port_config(port, pm.config, pm.mask); |
2549 | if (pm.advertise) { | |
2550 | netdev_set_advertisements(port->netdev, pm.advertise); | |
064af421 BP |
2551 | } |
2552 | } | |
2553 | return 0; | |
2554 | } | |
2555 | ||
90bf1e07 | 2556 | static enum ofperr |
3269c562 | 2557 | handle_desc_stats_request(struct ofconn *ofconn, |
982697a4 | 2558 | const struct ofp_header *request) |
064af421 | 2559 | { |
061bfea4 BP |
2560 | static const char *default_mfr_desc = "Nicira, Inc."; |
2561 | static const char *default_hw_desc = "Open vSwitch"; | |
2562 | static const char *default_sw_desc = VERSION; | |
2563 | static const char *default_serial_desc = "None"; | |
2564 | static const char *default_dp_desc = "None"; | |
2565 | ||
64ff1d96 | 2566 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 BP |
2567 | struct ofp_desc_stats *ods; |
2568 | struct ofpbuf *msg; | |
2569 | ||
982697a4 BP |
2570 | msg = ofpraw_alloc_stats_reply(request, 0); |
2571 | ods = ofpbuf_put_zeros(msg, sizeof *ods); | |
061bfea4 BP |
2572 | ovs_strlcpy(ods->mfr_desc, p->mfr_desc ? p->mfr_desc : default_mfr_desc, |
2573 | sizeof ods->mfr_desc); | |
2574 | ovs_strlcpy(ods->hw_desc, p->hw_desc ? p->hw_desc : default_hw_desc, | |
2575 | sizeof ods->hw_desc); | |
2576 | ovs_strlcpy(ods->sw_desc, p->sw_desc ? p->sw_desc : default_sw_desc, | |
2577 | sizeof ods->sw_desc); | |
2578 | ovs_strlcpy(ods->serial_num, | |
2579 | p->serial_desc ? p->serial_desc : default_serial_desc, | |
2580 | sizeof ods->serial_num); | |
2581 | ovs_strlcpy(ods->dp_desc, p->dp_desc ? p->dp_desc : default_dp_desc, | |
2582 | sizeof ods->dp_desc); | |
b0421aa2 | 2583 | ofconn_send_reply(ofconn, msg); |
064af421 BP |
2584 | |
2585 | return 0; | |
2586 | } | |
2587 | ||
90bf1e07 | 2588 | static enum ofperr |
3269c562 | 2589 | handle_table_stats_request(struct ofconn *ofconn, |
982697a4 | 2590 | const struct ofp_header *request) |
064af421 | 2591 | { |
64ff1d96 | 2592 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
307975da | 2593 | struct ofp12_table_stats *ots; |
064af421 | 2594 | struct ofpbuf *msg; |
c2f0373a | 2595 | int n_tables; |
6c1491fb | 2596 | size_t i; |
064af421 | 2597 | |
307975da SH |
2598 | /* Set up default values. |
2599 | * | |
2600 | * ofp12_table_stats is used as a generic structure as | |
2601 | * it is able to hold all the fields for ofp10_table_stats | |
2602 | * and ofp11_table_stats (and of course itself). | |
2603 | */ | |
2604 | ots = xcalloc(p->n_tables, sizeof *ots); | |
6c1491fb BP |
2605 | for (i = 0; i < p->n_tables; i++) { |
2606 | ots[i].table_id = i; | |
35aa7a21 | 2607 | sprintf(ots[i].name, "table%zu", i); |
307975da SH |
2608 | ots[i].match = htonll(OFPXMT12_MASK); |
2609 | ots[i].wildcards = htonll(OFPXMT12_MASK); | |
e78b61f6 BP |
2610 | ots[i].write_actions = htonl(OFPAT11_OUTPUT); |
2611 | ots[i].apply_actions = htonl(OFPAT11_OUTPUT); | |
307975da SH |
2612 | ots[i].write_setfields = htonll(OFPXMT12_MASK); |
2613 | ots[i].apply_setfields = htonll(OFPXMT12_MASK); | |
2614 | ots[i].metadata_match = htonll(UINT64_MAX); | |
2615 | ots[i].metadata_write = htonll(UINT64_MAX); | |
2616 | ots[i].instructions = htonl(OFPIT11_ALL); | |
2617 | ots[i].config = htonl(OFPTC11_TABLE_MISS_MASK); | |
6c1491fb | 2618 | ots[i].max_entries = htonl(1000000); /* An arbitrary big number. */ |
d0918789 | 2619 | ots[i].active_count = htonl(classifier_count(&p->tables[i].cls)); |
6c1491fb | 2620 | } |
064af421 | 2621 | |
6c1491fb | 2622 | p->ofproto_class->get_tables(p, ots); |
064af421 | 2623 | |
c2f0373a BP |
2624 | /* Post-process the tables, dropping hidden tables. */ |
2625 | n_tables = p->n_tables; | |
254750ce BP |
2626 | for (i = 0; i < p->n_tables; i++) { |
2627 | const struct oftable *table = &p->tables[i]; | |
2628 | ||
c2f0373a BP |
2629 | if (table->flags & OFTABLE_HIDDEN) { |
2630 | n_tables = i; | |
2631 | break; | |
2632 | } | |
2633 | ||
254750ce BP |
2634 | if (table->name) { |
2635 | ovs_strzcpy(ots[i].name, table->name, sizeof ots[i].name); | |
2636 | } | |
2637 | ||
2638 | if (table->max_flows < ntohl(ots[i].max_entries)) { | |
2639 | ots[i].max_entries = htonl(table->max_flows); | |
2640 | } | |
2641 | } | |
2642 | ||
c2f0373a | 2643 | msg = ofputil_encode_table_stats_reply(ots, n_tables, request); |
b0421aa2 | 2644 | ofconn_send_reply(ofconn, msg); |
307975da SH |
2645 | |
2646 | free(ots); | |
2647 | ||
064af421 BP |
2648 | return 0; |
2649 | } | |
2650 | ||
abaad8cf | 2651 | static void |
63f2140a | 2652 | append_port_stat(struct ofport *port, struct list *replies) |
abaad8cf | 2653 | { |
f8e4867e | 2654 | struct ofputil_port_stats ops = { .port_no = port->pp.port_no }; |
abaad8cf | 2655 | |
65e0be10 BP |
2656 | calc_duration(port->created, time_msec(), |
2657 | &ops.duration_sec, &ops.duration_nsec); | |
2658 | ||
d295e8e9 JP |
2659 | /* Intentionally ignore return value, since errors will set |
2660 | * 'stats' to all-1s, which is correct for OpenFlow, and | |
abaad8cf | 2661 | * netdev_get_stats() will log errors. */ |
f8e4867e SH |
2662 | ofproto_port_get_stats(port, &ops.stats); |
2663 | ||
2664 | ofputil_append_port_stat(replies, &ops); | |
abaad8cf JP |
2665 | } |
2666 | ||
90bf1e07 | 2667 | static enum ofperr |
63f2140a | 2668 | handle_port_stats_request(struct ofconn *ofconn, |
982697a4 | 2669 | const struct ofp_header *request) |
064af421 | 2670 | { |
64ff1d96 | 2671 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 | 2672 | struct ofport *port; |
63f2140a | 2673 | struct list replies; |
4e022ec0 | 2674 | ofp_port_t port_no; |
f8e4867e SH |
2675 | enum ofperr error; |
2676 | ||
2677 | error = ofputil_decode_port_stats_request(request, &port_no); | |
2678 | if (error) { | |
2679 | return error; | |
2680 | } | |
064af421 | 2681 | |
982697a4 | 2682 | ofpmp_init(&replies, request); |
7f05e7ab | 2683 | if (port_no != OFPP_ANY) { |
f8e4867e | 2684 | port = ofproto_get_port(p, port_no); |
abaad8cf | 2685 | if (port) { |
63f2140a | 2686 | append_port_stat(port, &replies); |
abaad8cf JP |
2687 | } |
2688 | } else { | |
4e8e4213 | 2689 | HMAP_FOR_EACH (port, hmap_node, &p->ports) { |
63f2140a | 2690 | append_port_stat(port, &replies); |
abaad8cf | 2691 | } |
064af421 BP |
2692 | } |
2693 | ||
63f2140a | 2694 | ofconn_send_replies(ofconn, &replies); |
064af421 BP |
2695 | return 0; |
2696 | } | |
2697 | ||
2be393ed JP |
2698 | static enum ofperr |
2699 | handle_port_desc_stats_request(struct ofconn *ofconn, | |
982697a4 | 2700 | const struct ofp_header *request) |
2be393ed JP |
2701 | { |
2702 | struct ofproto *p = ofconn_get_ofproto(ofconn); | |
2e3fa633 | 2703 | enum ofp_version version; |
2be393ed JP |
2704 | struct ofport *port; |
2705 | struct list replies; | |
2706 | ||
982697a4 | 2707 | ofpmp_init(&replies, request); |
2be393ed | 2708 | |
2e3fa633 | 2709 | version = ofputil_protocol_to_ofp_version(ofconn_get_protocol(ofconn)); |
2be393ed | 2710 | HMAP_FOR_EACH (port, hmap_node, &p->ports) { |
2e3fa633 | 2711 | ofputil_append_port_desc_stats_reply(version, &port->pp, &replies); |
2be393ed JP |
2712 | } |
2713 | ||
2714 | ofconn_send_replies(ofconn, &replies); | |
2715 | return 0; | |
2716 | } | |
2717 | ||
98eaac36 JR |
2718 | static uint32_t |
2719 | hash_cookie(ovs_be64 cookie) | |
2720 | { | |
2721 | return hash_2words((OVS_FORCE uint64_t)cookie >> 32, | |
2722 | (OVS_FORCE uint64_t)cookie); | |
2723 | } | |
2724 | ||
2725 | static void | |
2726 | cookies_insert(struct ofproto *ofproto, struct rule *rule) | |
2727 | { | |
2728 | hindex_insert(&ofproto->cookies, &rule->cookie_node, | |
2729 | hash_cookie(rule->flow_cookie)); | |
2730 | } | |
2731 | ||
2732 | static void | |
2733 | cookies_remove(struct ofproto *ofproto, struct rule *rule) | |
2734 | { | |
2735 | hindex_remove(&ofproto->cookies, &rule->cookie_node); | |
2736 | } | |
2737 | ||
2738 | static void | |
2739 | ofproto_rule_change_cookie(struct ofproto *ofproto, struct rule *rule, | |
2740 | ovs_be64 new_cookie) | |
2741 | { | |
2742 | if (new_cookie != rule->flow_cookie) { | |
2743 | cookies_remove(ofproto, rule); | |
2744 | ||
2745 | rule->flow_cookie = new_cookie; | |
2746 | ||
2747 | cookies_insert(ofproto, rule); | |
2748 | } | |
2749 | } | |
2750 | ||
c6ebb8fb | 2751 | static void |
65e0be10 BP |
2752 | calc_duration(long long int start, long long int now, |
2753 | uint32_t *sec, uint32_t *nsec) | |
c6ebb8fb | 2754 | { |
f27f2134 | 2755 | long long int msecs = now - start; |
588cd7b5 BP |
2756 | *sec = msecs / 1000; |
2757 | *nsec = (msecs % 1000) * (1000 * 1000); | |
2758 | } | |
2759 | ||
48266274 BP |
2760 | /* Checks whether 'table_id' is 0xff or a valid table ID in 'ofproto'. Returns |
2761 | * 0 if 'table_id' is OK, otherwise an OpenFlow error code. */ | |
90bf1e07 | 2762 | static enum ofperr |
48266274 BP |
2763 | check_table_id(const struct ofproto *ofproto, uint8_t table_id) |
2764 | { | |
2765 | return (table_id == 0xff || table_id < ofproto->n_tables | |
2766 | ? 0 | |
c22c56bd | 2767 | : OFPERR_OFPBRC_BAD_TABLE_ID); |
48266274 BP |
2768 | |
2769 | } | |
2770 | ||
5c67e4af | 2771 | static struct oftable * |
d4ce8a49 | 2772 | next_visible_table(const struct ofproto *ofproto, uint8_t table_id) |
5c67e4af BP |
2773 | { |
2774 | struct oftable *table; | |
2775 | ||
2776 | for (table = &ofproto->tables[table_id]; | |
2777 | table < &ofproto->tables[ofproto->n_tables]; | |
2778 | table++) { | |
2779 | if (!(table->flags & OFTABLE_HIDDEN)) { | |
2780 | return table; | |
2781 | } | |
2782 | } | |
2783 | ||
2784 | return NULL; | |
2785 | } | |
2786 | ||
d0918789 | 2787 | static struct oftable * |
d4ce8a49 | 2788 | first_matching_table(const struct ofproto *ofproto, uint8_t table_id) |
064af421 | 2789 | { |
6c1491fb | 2790 | if (table_id == 0xff) { |
5c67e4af | 2791 | return next_visible_table(ofproto, 0); |
6c1491fb BP |
2792 | } else if (table_id < ofproto->n_tables) { |
2793 | return &ofproto->tables[table_id]; | |
a02e5331 | 2794 | } else { |
6c1491fb | 2795 | return NULL; |
a02e5331 | 2796 | } |
064af421 BP |
2797 | } |
2798 | ||
d0918789 | 2799 | static struct oftable * |
d4ce8a49 BP |
2800 | next_matching_table(const struct ofproto *ofproto, |
2801 | const struct oftable *table, uint8_t table_id) | |
6c1491fb | 2802 | { |
5c67e4af BP |
2803 | return (table_id == 0xff |
2804 | ? next_visible_table(ofproto, (table - ofproto->tables) + 1) | |
6c1491fb BP |
2805 | : NULL); |
2806 | } | |
2807 | ||
d0918789 | 2808 | /* Assigns TABLE to each oftable, in turn, that matches TABLE_ID in OFPROTO: |
6c1491fb BP |
2809 | * |
2810 | * - If TABLE_ID is 0xff, this iterates over every classifier table in | |
5c67e4af | 2811 | * OFPROTO, skipping tables marked OFTABLE_HIDDEN. |
6c1491fb BP |
2812 | * |
2813 | * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates | |
5c67e4af BP |
2814 | * only once, for that table. (This can be used to access tables marked |
2815 | * OFTABLE_HIDDEN.) | |
6c1491fb | 2816 | * |
48266274 BP |
2817 | * - Otherwise, TABLE_ID isn't valid for OFPROTO, so the loop won't be |
2818 | * entered at all. (Perhaps you should have validated TABLE_ID with | |
2819 | * check_table_id().) | |
6c1491fb BP |
2820 | * |
2821 | * All parameters are evaluated multiple times. | |
2822 | */ | |
d0918789 BP |
2823 | #define FOR_EACH_MATCHING_TABLE(TABLE, TABLE_ID, OFPROTO) \ |
2824 | for ((TABLE) = first_matching_table(OFPROTO, TABLE_ID); \ | |
2825 | (TABLE) != NULL; \ | |
2826 | (TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID)) | |
6c1491fb | 2827 | |
9ed18e46 BP |
2828 | /* Searches 'ofproto' for rules in table 'table_id' (or in all tables, if |
2829 | * 'table_id' is 0xff) that match 'match' in the "loose" way required for | |
2830 | * OpenFlow OFPFC_MODIFY and OFPFC_DELETE requests and puts them on list | |
2831 | * 'rules'. | |
2832 | * | |
7f05e7ab | 2833 | * If 'out_port' is anything other than OFPP_ANY, then only rules that output |
9ed18e46 BP |
2834 | * to 'out_port' are included. |
2835 | * | |
2836 | * Hidden rules are always omitted. | |
2837 | * | |
2838 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 2839 | static enum ofperr |
9ed18e46 | 2840 | collect_rules_loose(struct ofproto *ofproto, uint8_t table_id, |
81a76618 | 2841 | const struct match *match, |
e729e793 | 2842 | ovs_be64 cookie, ovs_be64 cookie_mask, |
4e022ec0 | 2843 | ofp_port_t out_port, struct list *rules) |
9ed18e46 | 2844 | { |
d0918789 | 2845 | struct oftable *table; |
81a76618 | 2846 | struct cls_rule cr; |
90bf1e07 | 2847 | enum ofperr error; |
48266274 BP |
2848 | |
2849 | error = check_table_id(ofproto, table_id); | |
2850 | if (error) { | |
2851 | return error; | |
2852 | } | |
9ed18e46 BP |
2853 | |
2854 | list_init(rules); | |
81a76618 | 2855 | cls_rule_init(&cr, match, 0); |
98eaac36 JR |
2856 | |
2857 | if (cookie_mask == htonll(UINT64_MAX)) { | |
2858 | struct rule *rule; | |
2859 | ||
2860 | HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node, hash_cookie(cookie), | |
2861 | &ofproto->cookies) { | |
2862 | if (table_id != rule->table_id && table_id != 0xff) { | |
2863 | continue; | |
2864 | } | |
2865 | if (ofproto_rule_is_hidden(rule)) { | |
2866 | continue; | |
2867 | } | |
2868 | if (cls_rule_is_loose_match(&rule->cr, &cr.match)) { | |
2869 | if (rule->pending) { | |
2870 | error = OFPROTO_POSTPONE; | |
2871 | goto exit; | |
2872 | } | |
2873 | if (rule->flow_cookie == cookie /* Hash collisions possible. */ | |
2874 | && ofproto_rule_has_out_port(rule, out_port)) { | |
2875 | list_push_back(rules, &rule->ofproto_node); | |
2876 | } | |
2877 | } | |
2878 | } | |
2879 | goto exit; | |
2880 | } | |
2881 | ||
d0918789 | 2882 | FOR_EACH_MATCHING_TABLE (table, table_id, ofproto) { |
9ed18e46 BP |
2883 | struct cls_cursor cursor; |
2884 | struct rule *rule; | |
2885 | ||
81a76618 | 2886 | cls_cursor_init(&cursor, &table->cls, &cr); |
9ed18e46 | 2887 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
7ee20df1 | 2888 | if (rule->pending) { |
48d28ac1 BP |
2889 | error = OFPROTO_POSTPONE; |
2890 | goto exit; | |
7ee20df1 | 2891 | } |
2b07c8b1 BP |
2892 | if (!ofproto_rule_is_hidden(rule) |
2893 | && ofproto_rule_has_out_port(rule, out_port) | |
e729e793 | 2894 | && !((rule->flow_cookie ^ cookie) & cookie_mask)) { |
9ed18e46 BP |
2895 | list_push_back(rules, &rule->ofproto_node); |
2896 | } | |
2897 | } | |
2898 | } | |
48d28ac1 BP |
2899 | |
2900 | exit: | |
2901 | cls_rule_destroy(&cr); | |
2902 | return error; | |
9ed18e46 BP |
2903 | } |
2904 | ||
2905 | /* Searches 'ofproto' for rules in table 'table_id' (or in all tables, if | |
2906 | * 'table_id' is 0xff) that match 'match' in the "strict" way required for | |
2907 | * OpenFlow OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests and puts them | |
2908 | * on list 'rules'. | |
2909 | * | |
7f05e7ab | 2910 | * If 'out_port' is anything other than OFPP_ANY, then only rules that output |
9ed18e46 BP |
2911 | * to 'out_port' are included. |
2912 | * | |
2913 | * Hidden rules are always omitted. | |
2914 | * | |
2915 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 2916 | static enum ofperr |
9ed18e46 | 2917 | collect_rules_strict(struct ofproto *ofproto, uint8_t table_id, |
81a76618 | 2918 | const struct match *match, unsigned int priority, |
e729e793 | 2919 | ovs_be64 cookie, ovs_be64 cookie_mask, |
4e022ec0 | 2920 | ofp_port_t out_port, struct list *rules) |
9ed18e46 | 2921 | { |
d0918789 | 2922 | struct oftable *table; |
81a76618 | 2923 | struct cls_rule cr; |
48266274 BP |
2924 | int error; |
2925 | ||
2926 | error = check_table_id(ofproto, table_id); | |
2927 | if (error) { | |
2928 | return error; | |
2929 | } | |
9ed18e46 BP |
2930 | |
2931 | list_init(rules); | |
81a76618 | 2932 | cls_rule_init(&cr, match, priority); |
98eaac36 JR |
2933 | |
2934 | if (cookie_mask == htonll(UINT64_MAX)) { | |
2935 | struct rule *rule; | |
2936 | ||
2937 | HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node, hash_cookie(cookie), | |
2938 | &ofproto->cookies) { | |
2939 | if (table_id != rule->table_id && table_id != 0xff) { | |
2940 | continue; | |
2941 | } | |
2942 | if (ofproto_rule_is_hidden(rule)) { | |
2943 | continue; | |
2944 | } | |
2945 | if (cls_rule_equal(&rule->cr, &cr)) { | |
2946 | if (rule->pending) { | |
2947 | error = OFPROTO_POSTPONE; | |
2948 | goto exit; | |
2949 | } | |
2950 | if (rule->flow_cookie == cookie /* Hash collisions possible. */ | |
2951 | && ofproto_rule_has_out_port(rule, out_port)) { | |
2952 | list_push_back(rules, &rule->ofproto_node); | |
2953 | } | |
2954 | } | |
2955 | } | |
2956 | goto exit; | |
2957 | } | |
2958 | ||
d0918789 | 2959 | FOR_EACH_MATCHING_TABLE (table, table_id, ofproto) { |
9ed18e46 BP |
2960 | struct rule *rule; |
2961 | ||
d0918789 | 2962 | rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls, |
81a76618 | 2963 | &cr)); |
9ed18e46 | 2964 | if (rule) { |
7ee20df1 | 2965 | if (rule->pending) { |
48d28ac1 BP |
2966 | error = OFPROTO_POSTPONE; |
2967 | goto exit; | |
7ee20df1 | 2968 | } |
2b07c8b1 BP |
2969 | if (!ofproto_rule_is_hidden(rule) |
2970 | && ofproto_rule_has_out_port(rule, out_port) | |
e729e793 | 2971 | && !((rule->flow_cookie ^ cookie) & cookie_mask)) { |
9ed18e46 BP |
2972 | list_push_back(rules, &rule->ofproto_node); |
2973 | } | |
2974 | } | |
2975 | } | |
48d28ac1 BP |
2976 | |
2977 | exit: | |
2978 | cls_rule_destroy(&cr); | |
9ed18e46 BP |
2979 | return 0; |
2980 | } | |
2981 | ||
f27f2134 BP |
2982 | /* Returns 'age_ms' (a duration in milliseconds), converted to seconds and |
2983 | * forced into the range of a uint16_t. */ | |
2984 | static int | |
2985 | age_secs(long long int age_ms) | |
2986 | { | |
2987 | return (age_ms < 0 ? 0 | |
2988 | : age_ms >= UINT16_MAX * 1000 ? UINT16_MAX | |
2989 | : (unsigned int) age_ms / 1000); | |
2990 | } | |
2991 | ||
90bf1e07 | 2992 | static enum ofperr |
63f2140a | 2993 | handle_flow_stats_request(struct ofconn *ofconn, |
982697a4 | 2994 | const struct ofp_header *request) |
064af421 | 2995 | { |
64ff1d96 | 2996 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 2997 | struct ofputil_flow_stats_request fsr; |
63f2140a | 2998 | struct list replies; |
9ed18e46 BP |
2999 | struct list rules; |
3000 | struct rule *rule; | |
90bf1e07 | 3001 | enum ofperr error; |
09246b99 | 3002 | |
982697a4 | 3003 | error = ofputil_decode_flow_stats_request(&fsr, request); |
09246b99 BP |
3004 | if (error) { |
3005 | return error; | |
3006 | } | |
3007 | ||
9ed18e46 | 3008 | error = collect_rules_loose(ofproto, fsr.table_id, &fsr.match, |
e729e793 | 3009 | fsr.cookie, fsr.cookie_mask, |
9ed18e46 BP |
3010 | fsr.out_port, &rules); |
3011 | if (error) { | |
3012 | return error; | |
3013 | } | |
5ecc9d81 | 3014 | |
982697a4 | 3015 | ofpmp_init(&replies, request); |
9ed18e46 | 3016 | LIST_FOR_EACH (rule, ofproto_node, &rules) { |
f27f2134 | 3017 | long long int now = time_msec(); |
9ed18e46 BP |
3018 | struct ofputil_flow_stats fs; |
3019 | ||
5cb7a798 | 3020 | minimatch_expand(&rule->cr.match, &fs.match); |
81a76618 | 3021 | fs.priority = rule->cr.priority; |
9ed18e46 BP |
3022 | fs.cookie = rule->flow_cookie; |
3023 | fs.table_id = rule->table_id; | |
65e0be10 | 3024 | calc_duration(rule->created, now, &fs.duration_sec, &fs.duration_nsec); |
f27f2134 BP |
3025 | fs.idle_age = age_secs(now - rule->used); |
3026 | fs.hard_age = age_secs(now - rule->modified); | |
9ed18e46 BP |
3027 | ofproto->ofproto_class->rule_get_stats(rule, &fs.packet_count, |
3028 | &fs.byte_count); | |
f25d0cf3 BP |
3029 | fs.ofpacts = rule->ofpacts; |
3030 | fs.ofpacts_len = rule->ofpacts_len; | |
2e1ae200 | 3031 | fs.flags = 0; |
a3779dbc EJ |
3032 | |
3033 | ovs_mutex_lock(&rule->timeout_mutex); | |
3034 | fs.idle_timeout = rule->idle_timeout; | |
3035 | fs.hard_timeout = rule->hard_timeout; | |
3036 | ovs_mutex_unlock(&rule->timeout_mutex); | |
3037 | ||
2e1ae200 JR |
3038 | if (rule->send_flow_removed) { |
3039 | fs.flags |= OFPFF_SEND_FLOW_REM; | |
3040 | /* FIXME: Implement OF 1.3 flags OFPFF13_NO_PKT_COUNTS | |
3041 | and OFPFF13_NO_BYT_COUNTS */ | |
3042 | } | |
9ed18e46 | 3043 | ofputil_append_flow_stats_reply(&fs, &replies); |
3c4486a5 | 3044 | } |
63f2140a | 3045 | ofconn_send_replies(ofconn, &replies); |
5ecc9d81 | 3046 | |
09246b99 BP |
3047 | return 0; |
3048 | } | |
3049 | ||
4f2cad2c | 3050 | static void |
3394b5b6 | 3051 | flow_stats_ds(struct rule *rule, struct ds *results) |
4f2cad2c | 3052 | { |
4f2cad2c | 3053 | uint64_t packet_count, byte_count; |
4f2cad2c | 3054 | |
abe529af BP |
3055 | rule->ofproto->ofproto_class->rule_get_stats(rule, |
3056 | &packet_count, &byte_count); | |
4f2cad2c | 3057 | |
6c1491fb BP |
3058 | if (rule->table_id != 0) { |
3059 | ds_put_format(results, "table_id=%"PRIu8", ", rule->table_id); | |
3060 | } | |
4f2cad2c JP |
3061 | ds_put_format(results, "duration=%llds, ", |
3062 | (time_msec() - rule->created) / 1000); | |
52ae00b3 | 3063 | ds_put_format(results, "priority=%u, ", rule->cr.priority); |
4f2cad2c JP |
3064 | ds_put_format(results, "n_packets=%"PRIu64", ", packet_count); |
3065 | ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count); | |
cb833cf6 | 3066 | cls_rule_format(&rule->cr, results); |
a5df0e72 | 3067 | ds_put_char(results, ','); |
aa30ae4e | 3068 | ofpacts_format(rule->ofpacts, rule->ofpacts_len, results); |
4f2cad2c JP |
3069 | ds_put_cstr(results, "\n"); |
3070 | } | |
3071 | ||
d295e8e9 | 3072 | /* Adds a pretty-printed description of all flows to 'results', including |
ee8b231c | 3073 | * hidden flows (e.g., set up by in-band control). */ |
4f2cad2c JP |
3074 | void |
3075 | ofproto_get_all_flows(struct ofproto *p, struct ds *results) | |
3076 | { | |
d0918789 | 3077 | struct oftable *table; |
6c1491fb | 3078 | |
d0918789 | 3079 | OFPROTO_FOR_EACH_TABLE (table, p) { |
6c1491fb BP |
3080 | struct cls_cursor cursor; |
3081 | struct rule *rule; | |
064af421 | 3082 | |
d0918789 | 3083 | cls_cursor_init(&cursor, &table->cls, NULL); |
6c1491fb BP |
3084 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
3085 | flow_stats_ds(rule, results); | |
3086 | } | |
064af421 | 3087 | } |
064af421 BP |
3088 | } |
3089 | ||
b5827b24 BP |
3090 | /* Obtains the NetFlow engine type and engine ID for 'ofproto' into |
3091 | * '*engine_type' and '*engine_id', respectively. */ | |
3092 | void | |
3093 | ofproto_get_netflow_ids(const struct ofproto *ofproto, | |
3094 | uint8_t *engine_type, uint8_t *engine_id) | |
3095 | { | |
abe529af | 3096 | ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id); |
b5827b24 BP |
3097 | } |
3098 | ||
9a9e3786 BP |
3099 | /* Checks the status of CFM configured on 'ofp_port' within 'ofproto'. Returns |
3100 | * true if the port's CFM status was successfully stored into '*status'. | |
3101 | * Returns false if the port did not have CFM configured, in which case | |
3102 | * '*status' is indeterminate. | |
3103 | * | |
13b1b2ae | 3104 | * The caller must provide and owns '*status', and must free 'status->rmps'. */ |
9a9e3786 | 3105 | bool |
4e022ec0 | 3106 | ofproto_port_get_cfm_status(const struct ofproto *ofproto, ofp_port_t ofp_port, |
9a9e3786 | 3107 | struct ofproto_cfm_status *status) |
3967a833 MM |
3108 | { |
3109 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
9a9e3786 BP |
3110 | return (ofport |
3111 | && ofproto->ofproto_class->get_cfm_status | |
3112 | && ofproto->ofproto_class->get_cfm_status(ofport, status)); | |
3967a833 MM |
3113 | } |
3114 | ||
90bf1e07 | 3115 | static enum ofperr |
76c93b22 | 3116 | handle_aggregate_stats_request(struct ofconn *ofconn, |
982697a4 | 3117 | const struct ofp_header *oh) |
27d34fce | 3118 | { |
76c93b22 | 3119 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 3120 | struct ofputil_flow_stats_request request; |
76c93b22 | 3121 | struct ofputil_aggregate_stats stats; |
5e9d0469 | 3122 | bool unknown_packets, unknown_bytes; |
76c93b22 | 3123 | struct ofpbuf *reply; |
9ed18e46 BP |
3124 | struct list rules; |
3125 | struct rule *rule; | |
90bf1e07 | 3126 | enum ofperr error; |
27d34fce | 3127 | |
982697a4 | 3128 | error = ofputil_decode_flow_stats_request(&request, oh); |
76c93b22 BP |
3129 | if (error) { |
3130 | return error; | |
3131 | } | |
5ecc9d81 | 3132 | |
9ed18e46 | 3133 | error = collect_rules_loose(ofproto, request.table_id, &request.match, |
e729e793 | 3134 | request.cookie, request.cookie_mask, |
9ed18e46 BP |
3135 | request.out_port, &rules); |
3136 | if (error) { | |
3137 | return error; | |
3138 | } | |
3c4486a5 | 3139 | |
9ed18e46 | 3140 | memset(&stats, 0, sizeof stats); |
5e9d0469 | 3141 | unknown_packets = unknown_bytes = false; |
9ed18e46 BP |
3142 | LIST_FOR_EACH (rule, ofproto_node, &rules) { |
3143 | uint64_t packet_count; | |
3144 | uint64_t byte_count; | |
5ecc9d81 | 3145 | |
9ed18e46 BP |
3146 | ofproto->ofproto_class->rule_get_stats(rule, &packet_count, |
3147 | &byte_count); | |
5ecc9d81 | 3148 | |
5e9d0469 BP |
3149 | if (packet_count == UINT64_MAX) { |
3150 | unknown_packets = true; | |
3151 | } else { | |
3152 | stats.packet_count += packet_count; | |
3153 | } | |
3154 | ||
3155 | if (byte_count == UINT64_MAX) { | |
3156 | unknown_bytes = true; | |
3157 | } else { | |
3158 | stats.byte_count += byte_count; | |
3159 | } | |
3160 | ||
9ed18e46 | 3161 | stats.flow_count++; |
3c4486a5 | 3162 | } |
5e9d0469 BP |
3163 | if (unknown_packets) { |
3164 | stats.packet_count = UINT64_MAX; | |
3165 | } | |
3166 | if (unknown_bytes) { | |
3167 | stats.byte_count = UINT64_MAX; | |
3168 | } | |
27d34fce | 3169 | |
982697a4 | 3170 | reply = ofputil_encode_aggregate_stats_reply(&stats, oh); |
76c93b22 | 3171 | ofconn_send_reply(ofconn, reply); |
09246b99 BP |
3172 | |
3173 | return 0; | |
3174 | } | |
3175 | ||
c1c9c9c4 | 3176 | struct queue_stats_cbdata { |
ca0f572c | 3177 | struct ofport *ofport; |
63f2140a | 3178 | struct list replies; |
6dc34a0d | 3179 | long long int now; |
c1c9c9c4 BP |
3180 | }; |
3181 | ||
3182 | static void | |
db9220c3 | 3183 | put_queue_stats(struct queue_stats_cbdata *cbdata, uint32_t queue_id, |
c1c9c9c4 BP |
3184 | const struct netdev_queue_stats *stats) |
3185 | { | |
6dc34a0d | 3186 | struct ofputil_queue_stats oqs; |
c1c9c9c4 | 3187 | |
6dc34a0d BP |
3188 | oqs.port_no = cbdata->ofport->pp.port_no; |
3189 | oqs.queue_id = queue_id; | |
3190 | oqs.tx_bytes = stats->tx_bytes; | |
3191 | oqs.tx_packets = stats->tx_packets; | |
3192 | oqs.tx_errors = stats->tx_errors; | |
3193 | if (stats->created != LLONG_MIN) { | |
3194 | calc_duration(stats->created, cbdata->now, | |
3195 | &oqs.duration_sec, &oqs.duration_nsec); | |
3196 | } else { | |
3197 | oqs.duration_sec = oqs.duration_nsec = UINT32_MAX; | |
3198 | } | |
64626975 | 3199 | ofputil_append_queue_stat(&cbdata->replies, &oqs); |
c1c9c9c4 BP |
3200 | } |
3201 | ||
3202 | static void | |
db9220c3 | 3203 | handle_queue_stats_dump_cb(uint32_t queue_id, |
c1c9c9c4 BP |
3204 | struct netdev_queue_stats *stats, |
3205 | void *cbdata_) | |
3206 | { | |
3207 | struct queue_stats_cbdata *cbdata = cbdata_; | |
3208 | ||
3209 | put_queue_stats(cbdata, queue_id, stats); | |
3210 | } | |
3211 | ||
0414d158 | 3212 | static enum ofperr |
ca0f572c | 3213 | handle_queue_stats_for_port(struct ofport *port, uint32_t queue_id, |
c1c9c9c4 BP |
3214 | struct queue_stats_cbdata *cbdata) |
3215 | { | |
ca0f572c | 3216 | cbdata->ofport = port; |
c1c9c9c4 BP |
3217 | if (queue_id == OFPQ_ALL) { |
3218 | netdev_dump_queue_stats(port->netdev, | |
3219 | handle_queue_stats_dump_cb, cbdata); | |
3220 | } else { | |
3221 | struct netdev_queue_stats stats; | |
3222 | ||
1ac788f6 BP |
3223 | if (!netdev_get_queue_stats(port->netdev, queue_id, &stats)) { |
3224 | put_queue_stats(cbdata, queue_id, &stats); | |
0414d158 BP |
3225 | } else { |
3226 | return OFPERR_OFPQOFC_BAD_QUEUE; | |
1ac788f6 | 3227 | } |
c1c9c9c4 | 3228 | } |
0414d158 | 3229 | return 0; |
c1c9c9c4 BP |
3230 | } |
3231 | ||
90bf1e07 | 3232 | static enum ofperr |
63f2140a | 3233 | handle_queue_stats_request(struct ofconn *ofconn, |
982697a4 | 3234 | const struct ofp_header *rq) |
c1c9c9c4 | 3235 | { |
64ff1d96 | 3236 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
c1c9c9c4 | 3237 | struct queue_stats_cbdata cbdata; |
0414d158 | 3238 | struct ofport *port; |
0414d158 | 3239 | enum ofperr error; |
64626975 | 3240 | struct ofputil_queue_stats_request oqsr; |
c1c9c9c4 | 3241 | |
c1c9c9c4 BP |
3242 | COVERAGE_INC(ofproto_queue_req); |
3243 | ||
982697a4 | 3244 | ofpmp_init(&cbdata.replies, rq); |
6dc34a0d | 3245 | cbdata.now = time_msec(); |
c1c9c9c4 | 3246 | |
64626975 SH |
3247 | error = ofputil_decode_queue_stats_request(rq, &oqsr); |
3248 | if (error) { | |
3249 | return error; | |
3250 | } | |
3251 | ||
7f05e7ab | 3252 | if (oqsr.port_no == OFPP_ANY) { |
0414d158 | 3253 | error = OFPERR_OFPQOFC_BAD_QUEUE; |
4e8e4213 | 3254 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
64626975 | 3255 | if (!handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata)) { |
0414d158 BP |
3256 | error = 0; |
3257 | } | |
c1c9c9c4 | 3258 | } |
0414d158 | 3259 | } else { |
64626975 | 3260 | port = ofproto_get_port(ofproto, oqsr.port_no); |
0414d158 | 3261 | error = (port |
64626975 | 3262 | ? handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata) |
0414d158 BP |
3263 | : OFPERR_OFPQOFC_BAD_PORT); |
3264 | } | |
3265 | if (!error) { | |
3266 | ofconn_send_replies(ofconn, &cbdata.replies); | |
c1c9c9c4 | 3267 | } else { |
63f2140a | 3268 | ofpbuf_list_delete(&cbdata.replies); |
c1c9c9c4 | 3269 | } |
c1c9c9c4 | 3270 | |
0414d158 | 3271 | return error; |
c1c9c9c4 | 3272 | } |
7ee20df1 BP |
3273 | |
3274 | static bool | |
3275 | is_flow_deletion_pending(const struct ofproto *ofproto, | |
3276 | const struct cls_rule *cls_rule, | |
3277 | uint8_t table_id) | |
3278 | { | |
3279 | if (!hmap_is_empty(&ofproto->deletions)) { | |
3280 | struct ofoperation *op; | |
3281 | ||
3282 | HMAP_FOR_EACH_WITH_HASH (op, hmap_node, | |
3283 | cls_rule_hash(cls_rule, table_id), | |
3284 | &ofproto->deletions) { | |
3285 | if (cls_rule_equal(cls_rule, &op->rule->cr)) { | |
3286 | return true; | |
3287 | } | |
3288 | } | |
3289 | } | |
3290 | ||
3291 | return false; | |
3292 | } | |
3293 | ||
79eee1eb BP |
3294 | /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT |
3295 | * in which no matching flow already exists in the flow table. | |
3296 | * | |
3297 | * Adds the flow specified by 'ofm', which is followed by 'n_actions' | |
75a75043 | 3298 | * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow |
90bf1e07 BP |
3299 | * error code on failure, or OFPROTO_POSTPONE if the operation cannot be |
3300 | * initiated now but may be retried later. | |
79eee1eb | 3301 | * |
f25d0cf3 BP |
3302 | * Upon successful return, takes ownership of 'fm->ofpacts'. On failure, |
3303 | * ownership remains with the caller. | |
3304 | * | |
79eee1eb BP |
3305 | * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id, |
3306 | * if any. */ | |
90bf1e07 | 3307 | static enum ofperr |
a9a2da38 | 3308 | add_flow(struct ofproto *ofproto, struct ofconn *ofconn, |
e3b56933 | 3309 | struct ofputil_flow_mod *fm, const struct ofp_header *request) |
064af421 | 3310 | { |
d0918789 | 3311 | struct oftable *table; |
7ee20df1 BP |
3312 | struct ofopgroup *group; |
3313 | struct rule *victim; | |
064af421 | 3314 | struct rule *rule; |
5a361239 | 3315 | uint8_t table_id; |
064af421 BP |
3316 | int error; |
3317 | ||
48266274 BP |
3318 | error = check_table_id(ofproto, fm->table_id); |
3319 | if (error) { | |
3320 | return error; | |
3321 | } | |
3322 | ||
7ee20df1 BP |
3323 | /* Pick table. */ |
3324 | if (fm->table_id == 0xff) { | |
13521ff5 | 3325 | if (ofproto->ofproto_class->rule_choose_table) { |
81a76618 BP |
3326 | error = ofproto->ofproto_class->rule_choose_table(ofproto, |
3327 | &fm->match, | |
7ee20df1 BP |
3328 | &table_id); |
3329 | if (error) { | |
3330 | return error; | |
3331 | } | |
cb22974d | 3332 | ovs_assert(table_id < ofproto->n_tables); |
7ee20df1 | 3333 | } else { |
5a361239 | 3334 | table_id = 0; |
7ee20df1 BP |
3335 | } |
3336 | } else if (fm->table_id < ofproto->n_tables) { | |
5a361239 | 3337 | table_id = fm->table_id; |
7ee20df1 | 3338 | } else { |
c22c56bd | 3339 | return OFPERR_OFPBRC_BAD_TABLE_ID; |
064af421 BP |
3340 | } |
3341 | ||
5a361239 JR |
3342 | table = &ofproto->tables[table_id]; |
3343 | ||
5c67e4af BP |
3344 | if (table->flags & OFTABLE_READONLY) { |
3345 | return OFPERR_OFPBRC_EPERM; | |
3346 | } | |
3347 | ||
e3b56933 JR |
3348 | /* Verify actions. */ |
3349 | error = ofproto_check_ofpacts(ofproto, fm->ofpacts, fm->ofpacts_len, | |
3350 | &fm->match.flow, table_id); | |
3351 | if (error) { | |
3352 | return error; | |
3353 | } | |
3354 | ||
81a76618 BP |
3355 | /* Allocate new rule and initialize classifier rule. */ |
3356 | rule = ofproto->ofproto_class->rule_alloc(); | |
3357 | if (!rule) { | |
3358 | VLOG_WARN_RL(&rl, "%s: failed to create rule (%s)", | |
10a89ef0 | 3359 | ofproto->name, ovs_strerror(error)); |
81a76618 | 3360 | return ENOMEM; |
63adcc7d | 3361 | } |
81a76618 | 3362 | cls_rule_init(&rule->cr, &fm->match, fm->priority); |
63adcc7d | 3363 | |
7ee20df1 | 3364 | /* Serialize against pending deletion. */ |
5a361239 | 3365 | if (is_flow_deletion_pending(ofproto, &rule->cr, table_id)) { |
48d28ac1 | 3366 | cls_rule_destroy(&rule->cr); |
81a76618 | 3367 | ofproto->ofproto_class->rule_dealloc(rule); |
7ee20df1 | 3368 | return OFPROTO_POSTPONE; |
afe75089 | 3369 | } |
064af421 | 3370 | |
81a76618 BP |
3371 | /* Check for overlap, if requested. */ |
3372 | if (fm->flags & OFPFF_CHECK_OVERLAP | |
3373 | && classifier_rule_overlaps(&table->cls, &rule->cr)) { | |
48d28ac1 | 3374 | cls_rule_destroy(&rule->cr); |
81a76618 BP |
3375 | ofproto->ofproto_class->rule_dealloc(rule); |
3376 | return OFPERR_OFPFMFC_OVERLAP; | |
7ee20df1 | 3377 | } |
81a76618 | 3378 | |
2e1ae200 JR |
3379 | /* FIXME: Implement OFPFF12_RESET_COUNTS */ |
3380 | ||
7ee20df1 | 3381 | rule->ofproto = ofproto; |
7ee20df1 | 3382 | rule->pending = NULL; |
623e1caf | 3383 | rule->flow_cookie = fm->new_cookie; |
1745cd08 | 3384 | rule->created = rule->modified = rule->used = time_msec(); |
a3779dbc EJ |
3385 | |
3386 | ovs_mutex_init(&rule->timeout_mutex, OVS_MUTEX_ADAPTIVE); | |
3387 | ovs_mutex_lock(&rule->timeout_mutex); | |
7ee20df1 BP |
3388 | rule->idle_timeout = fm->idle_timeout; |
3389 | rule->hard_timeout = fm->hard_timeout; | |
a3779dbc EJ |
3390 | ovs_mutex_unlock(&rule->timeout_mutex); |
3391 | ||
7ee20df1 BP |
3392 | rule->table_id = table - ofproto->tables; |
3393 | rule->send_flow_removed = (fm->flags & OFPFF_SEND_FLOW_REM) != 0; | |
2e1ae200 JR |
3394 | /* FIXME: Implement OF 1.3 flags OFPFF13_NO_PKT_COUNTS |
3395 | and OFPFF13_NO_BYT_COUNTS */ | |
f25d0cf3 BP |
3396 | rule->ofpacts = xmemdup(fm->ofpacts, fm->ofpacts_len); |
3397 | rule->ofpacts_len = fm->ofpacts_len; | |
9cae45dc JR |
3398 | rule->meter_id = find_meter(rule->ofpacts, rule->ofpacts_len); |
3399 | list_init(&rule->meter_list_node); | |
254750ce BP |
3400 | rule->evictable = true; |
3401 | rule->eviction_group = NULL; | |
e503cc19 | 3402 | list_init(&rule->expirable); |
2b07c8b1 BP |
3403 | rule->monitor_flags = 0; |
3404 | rule->add_seqno = 0; | |
3405 | rule->modify_seqno = 0; | |
7ee20df1 BP |
3406 | |
3407 | /* Insert new rule. */ | |
d0918789 | 3408 | victim = oftable_replace_rule(rule); |
5c67e4af BP |
3409 | if (victim && !rule_is_modifiable(victim)) { |
3410 | error = OFPERR_OFPBRC_EPERM; | |
3411 | } else if (victim && victim->pending) { | |
7ee20df1 BP |
3412 | error = OFPROTO_POSTPONE; |
3413 | } else { | |
a7d94793 | 3414 | struct ofoperation *op; |
254750ce BP |
3415 | struct rule *evict; |
3416 | ||
3417 | if (classifier_count(&table->cls) > table->max_flows) { | |
3418 | bool was_evictable; | |
3419 | ||
3420 | was_evictable = rule->evictable; | |
3421 | rule->evictable = false; | |
3422 | evict = choose_rule_to_evict(table); | |
3423 | rule->evictable = was_evictable; | |
3424 | ||
3425 | if (!evict) { | |
be2b69d1 | 3426 | error = OFPERR_OFPFMFC_TABLE_FULL; |
254750ce BP |
3427 | goto exit; |
3428 | } else if (evict->pending) { | |
3429 | error = OFPROTO_POSTPONE; | |
3430 | goto exit; | |
3431 | } | |
3432 | } else { | |
3433 | evict = NULL; | |
3434 | } | |
3435 | ||
7024dffe | 3436 | group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id); |
2b07c8b1 | 3437 | op = ofoperation_create(group, rule, OFOPERATION_ADD, 0); |
a7d94793 | 3438 | op->victim = victim; |
7ee20df1 BP |
3439 | |
3440 | error = ofproto->ofproto_class->rule_construct(rule); | |
3441 | if (error) { | |
e615b0a3 | 3442 | op->group->n_running--; |
7ee20df1 | 3443 | ofoperation_destroy(rule->pending); |
254750ce | 3444 | } else if (evict) { |
ca311b2f | 3445 | delete_flow__(evict, group, OFPRR_EVICTION); |
7ee20df1 BP |
3446 | } |
3447 | ofopgroup_submit(group); | |
064af421 | 3448 | } |
79eee1eb | 3449 | |
254750ce | 3450 | exit: |
7ee20df1 | 3451 | /* Back out if an error occurred. */ |
79eee1eb | 3452 | if (error) { |
d0918789 | 3453 | oftable_substitute_rule(rule, victim); |
7ee20df1 | 3454 | ofproto_rule_destroy__(rule); |
79eee1eb | 3455 | } |
7ee20df1 | 3456 | return error; |
064af421 | 3457 | } |
79eee1eb BP |
3458 | \f |
3459 | /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */ | |
064af421 | 3460 | |
9ed18e46 BP |
3461 | /* Modifies the rules listed in 'rules', changing their actions to match those |
3462 | * in 'fm'. | |
79eee1eb | 3463 | * |
9ed18e46 BP |
3464 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, |
3465 | * if any. | |
3466 | * | |
3467 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 3468 | static enum ofperr |
7024dffe | 3469 | modify_flows__(struct ofproto *ofproto, struct ofconn *ofconn, |
e3b56933 | 3470 | struct ofputil_flow_mod *fm, const struct ofp_header *request, |
9cae45dc | 3471 | struct list *rules) |
79eee1eb | 3472 | { |
7ee20df1 | 3473 | struct ofopgroup *group; |
9ed18e46 | 3474 | struct rule *rule; |
5c67e4af | 3475 | enum ofperr error; |
79eee1eb | 3476 | |
7024dffe | 3477 | group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id); |
5c67e4af | 3478 | error = OFPERR_OFPBRC_EPERM; |
9ed18e46 | 3479 | LIST_FOR_EACH (rule, ofproto_node, rules) { |
08043761 BP |
3480 | struct ofoperation *op; |
3481 | bool actions_changed; | |
08043761 | 3482 | |
2e1ae200 JR |
3483 | /* FIXME: Implement OFPFF12_RESET_COUNTS */ |
3484 | ||
5c67e4af BP |
3485 | if (rule_is_modifiable(rule)) { |
3486 | /* At least one rule is modifiable, don't report EPERM error. */ | |
3487 | error = 0; | |
3488 | } else { | |
3489 | continue; | |
3490 | } | |
3491 | ||
e3b56933 JR |
3492 | /* Verify actions. */ |
3493 | error = ofpacts_check(fm->ofpacts, fm->ofpacts_len, &fm->match.flow, | |
3494 | ofproto->max_ports, rule->table_id); | |
3495 | if (error) { | |
3496 | return error; | |
3497 | } | |
3498 | ||
08043761 BP |
3499 | actions_changed = !ofpacts_equal(fm->ofpacts, fm->ofpacts_len, |
3500 | rule->ofpacts, rule->ofpacts_len); | |
a7d94793 | 3501 | |
2b07c8b1 | 3502 | op = ofoperation_create(group, rule, OFOPERATION_MODIFY, 0); |
98eaac36 | 3503 | |
23342857 | 3504 | if (fm->modify_cookie && fm->new_cookie != htonll(UINT64_MAX)) { |
98eaac36 JR |
3505 | ofproto_rule_change_cookie(ofproto, rule, fm->new_cookie); |
3506 | } | |
08043761 | 3507 | if (actions_changed) { |
a7d94793 BP |
3508 | op->ofpacts = rule->ofpacts; |
3509 | op->ofpacts_len = rule->ofpacts_len; | |
9cae45dc | 3510 | op->meter_id = rule->meter_id; |
f25d0cf3 BP |
3511 | rule->ofpacts = xmemdup(fm->ofpacts, fm->ofpacts_len); |
3512 | rule->ofpacts_len = fm->ofpacts_len; | |
9cae45dc | 3513 | rule->meter_id = find_meter(rule->ofpacts, rule->ofpacts_len); |
f25d0cf3 | 3514 | rule->ofproto->ofproto_class->rule_modify_actions(rule); |
308881af | 3515 | } else { |
08043761 | 3516 | ofoperation_complete(op, 0); |
623e1caf | 3517 | } |
5ecc9d81 | 3518 | } |
7ee20df1 | 3519 | ofopgroup_submit(group); |
79eee1eb | 3520 | |
5c67e4af | 3521 | return error; |
9ed18e46 BP |
3522 | } |
3523 | ||
9387b970 SH |
3524 | static enum ofperr |
3525 | modify_flows_add(struct ofproto *ofproto, struct ofconn *ofconn, | |
e3b56933 | 3526 | struct ofputil_flow_mod *fm, const struct ofp_header *request) |
9387b970 SH |
3527 | { |
3528 | if (fm->cookie_mask != htonll(0) || fm->new_cookie == htonll(UINT64_MAX)) { | |
3529 | return 0; | |
3530 | } | |
3531 | return add_flow(ofproto, ofconn, fm, request); | |
3532 | } | |
3533 | ||
90bf1e07 BP |
3534 | /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on |
3535 | * failure. | |
9ed18e46 BP |
3536 | * |
3537 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, | |
3538 | * if any. */ | |
90bf1e07 | 3539 | static enum ofperr |
7024dffe | 3540 | modify_flows_loose(struct ofproto *ofproto, struct ofconn *ofconn, |
e3b56933 | 3541 | struct ofputil_flow_mod *fm, |
7ee20df1 | 3542 | const struct ofp_header *request) |
9ed18e46 | 3543 | { |
9ed18e46 BP |
3544 | struct list rules; |
3545 | int error; | |
3546 | ||
81a76618 | 3547 | error = collect_rules_loose(ofproto, fm->table_id, &fm->match, |
e729e793 | 3548 | fm->cookie, fm->cookie_mask, |
7f05e7ab | 3549 | OFPP_ANY, &rules); |
623e1caf JP |
3550 | if (error) { |
3551 | return error; | |
3552 | } else if (list_is_empty(&rules)) { | |
9387b970 | 3553 | return modify_flows_add(ofproto, ofconn, fm, request); |
623e1caf JP |
3554 | } else { |
3555 | return modify_flows__(ofproto, ofconn, fm, request, &rules); | |
3556 | } | |
79eee1eb BP |
3557 | } |
3558 | ||
3559 | /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error | |
90bf1e07 | 3560 | * code on failure. |
79eee1eb | 3561 | * |
9ed18e46 | 3562 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, |
79eee1eb | 3563 | * if any. */ |
90bf1e07 | 3564 | static enum ofperr |
7024dffe | 3565 | modify_flow_strict(struct ofproto *ofproto, struct ofconn *ofconn, |
e3b56933 | 3566 | struct ofputil_flow_mod *fm, |
7ee20df1 | 3567 | const struct ofp_header *request) |
79eee1eb | 3568 | { |
9ed18e46 | 3569 | struct list rules; |
6c1491fb BP |
3570 | int error; |
3571 | ||
81a76618 BP |
3572 | error = collect_rules_strict(ofproto, fm->table_id, &fm->match, |
3573 | fm->priority, fm->cookie, fm->cookie_mask, | |
7f05e7ab | 3574 | OFPP_ANY, &rules); |
623e1caf JP |
3575 | |
3576 | if (error) { | |
3577 | return error; | |
3578 | } else if (list_is_empty(&rules)) { | |
9387b970 | 3579 | return modify_flows_add(ofproto, ofconn, fm, request); |
623e1caf JP |
3580 | } else { |
3581 | return list_is_singleton(&rules) ? modify_flows__(ofproto, ofconn, | |
3582 | fm, request, &rules) | |
3583 | : 0; | |
3584 | } | |
79eee1eb | 3585 | } |
9ed18e46 BP |
3586 | \f |
3587 | /* OFPFC_DELETE implementation. */ | |
79eee1eb | 3588 | |
254750ce | 3589 | static void |
ca311b2f JR |
3590 | delete_flow__(struct rule *rule, struct ofopgroup *group, |
3591 | enum ofp_flow_removed_reason reason) | |
254750ce BP |
3592 | { |
3593 | struct ofproto *ofproto = rule->ofproto; | |
3594 | ||
ca311b2f | 3595 | ofproto_rule_send_removed(rule, reason); |
254750ce | 3596 | |
ca311b2f | 3597 | ofoperation_create(group, rule, OFOPERATION_DELETE, reason); |
254750ce BP |
3598 | oftable_remove_rule(rule); |
3599 | ofproto->ofproto_class->rule_destruct(rule); | |
3600 | } | |
3601 | ||
9ed18e46 BP |
3602 | /* Deletes the rules listed in 'rules'. |
3603 | * | |
3604 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 3605 | static enum ofperr |
7024dffe | 3606 | delete_flows__(struct ofproto *ofproto, struct ofconn *ofconn, |
ca311b2f JR |
3607 | const struct ofp_header *request, struct list *rules, |
3608 | enum ofp_flow_removed_reason reason) | |
064af421 | 3609 | { |
9ed18e46 | 3610 | struct rule *rule, *next; |
7ee20df1 | 3611 | struct ofopgroup *group; |
79eee1eb | 3612 | |
7024dffe | 3613 | group = ofopgroup_create(ofproto, ofconn, request, UINT32_MAX); |
9ed18e46 | 3614 | LIST_FOR_EACH_SAFE (rule, next, ofproto_node, rules) { |
ca311b2f | 3615 | delete_flow__(rule, group, reason); |
79eee1eb | 3616 | } |
7ee20df1 | 3617 | ofopgroup_submit(group); |
79eee1eb | 3618 | |
9ed18e46 | 3619 | return 0; |
79eee1eb | 3620 | } |
79eee1eb BP |
3621 | |
3622 | /* Implements OFPFC_DELETE. */ | |
90bf1e07 | 3623 | static enum ofperr |
7024dffe BP |
3624 | delete_flows_loose(struct ofproto *ofproto, struct ofconn *ofconn, |
3625 | const struct ofputil_flow_mod *fm, | |
7ee20df1 | 3626 | const struct ofp_header *request) |
79eee1eb | 3627 | { |
9ed18e46 | 3628 | struct list rules; |
90bf1e07 | 3629 | enum ofperr error; |
064af421 | 3630 | |
81a76618 | 3631 | error = collect_rules_loose(ofproto, fm->table_id, &fm->match, |
e729e793 JP |
3632 | fm->cookie, fm->cookie_mask, |
3633 | fm->out_port, &rules); | |
9ed18e46 | 3634 | return (error ? error |
7024dffe | 3635 | : !list_is_empty(&rules) ? delete_flows__(ofproto, ofconn, request, |
ca311b2f | 3636 | &rules, OFPRR_DELETE) |
9ed18e46 | 3637 | : 0); |
064af421 BP |
3638 | } |
3639 | ||
79eee1eb | 3640 | /* Implements OFPFC_DELETE_STRICT. */ |
90bf1e07 | 3641 | static enum ofperr |
7024dffe | 3642 | delete_flow_strict(struct ofproto *ofproto, struct ofconn *ofconn, |
1b9d6420 | 3643 | const struct ofputil_flow_mod *fm, |
7ee20df1 | 3644 | const struct ofp_header *request) |
79eee1eb | 3645 | { |
9ed18e46 | 3646 | struct list rules; |
90bf1e07 | 3647 | enum ofperr error; |
79eee1eb | 3648 | |
81a76618 BP |
3649 | error = collect_rules_strict(ofproto, fm->table_id, &fm->match, |
3650 | fm->priority, fm->cookie, fm->cookie_mask, | |
e729e793 | 3651 | fm->out_port, &rules); |
9ed18e46 | 3652 | return (error ? error |
7024dffe | 3653 | : list_is_singleton(&rules) ? delete_flows__(ofproto, ofconn, |
ca311b2f JR |
3654 | request, &rules, |
3655 | OFPRR_DELETE) | |
9ed18e46 | 3656 | : 0); |
abe529af BP |
3657 | } |
3658 | ||
3659 | static void | |
3660 | ofproto_rule_send_removed(struct rule *rule, uint8_t reason) | |
3661 | { | |
3662 | struct ofputil_flow_removed fr; | |
3663 | ||
2b07c8b1 | 3664 | if (ofproto_rule_is_hidden(rule) || !rule->send_flow_removed) { |
abe529af BP |
3665 | return; |
3666 | } | |
3667 | ||
5cb7a798 | 3668 | minimatch_expand(&rule->cr.match, &fr.match); |
81a76618 | 3669 | fr.priority = rule->cr.priority; |
abe529af BP |
3670 | fr.cookie = rule->flow_cookie; |
3671 | fr.reason = reason; | |
95216219 | 3672 | fr.table_id = rule->table_id; |
65e0be10 BP |
3673 | calc_duration(rule->created, time_msec(), |
3674 | &fr.duration_sec, &fr.duration_nsec); | |
a3779dbc | 3675 | ovs_mutex_lock(&rule->timeout_mutex); |
abe529af | 3676 | fr.idle_timeout = rule->idle_timeout; |
fa2bad0f | 3677 | fr.hard_timeout = rule->hard_timeout; |
a3779dbc | 3678 | ovs_mutex_unlock(&rule->timeout_mutex); |
abe529af BP |
3679 | rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count, |
3680 | &fr.byte_count); | |
3681 | ||
3682 | connmgr_send_flow_removed(rule->ofproto->connmgr, &fr); | |
3683 | } | |
3684 | ||
1745cd08 BP |
3685 | void |
3686 | ofproto_rule_update_used(struct rule *rule, long long int used) | |
3687 | { | |
3688 | if (used > rule->used) { | |
254750ce BP |
3689 | struct eviction_group *evg = rule->eviction_group; |
3690 | ||
1745cd08 | 3691 | rule->used = used; |
254750ce BP |
3692 | if (evg) { |
3693 | heap_change(&evg->rules, &rule->evg_node, | |
3694 | rule_eviction_priority(rule)); | |
3695 | } | |
1745cd08 BP |
3696 | } |
3697 | } | |
3698 | ||
abe529af BP |
3699 | /* Sends an OpenFlow "flow removed" message with the given 'reason' (either |
3700 | * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its | |
3701 | * ofproto. | |
3702 | * | |
e2a3d183 BP |
3703 | * 'rule' must not have a pending operation (that is, 'rule->pending' must be |
3704 | * NULL). | |
3705 | * | |
abe529af BP |
3706 | * ofproto implementation ->run() functions should use this function to expire |
3707 | * OpenFlow flows. */ | |
3708 | void | |
3709 | ofproto_rule_expire(struct rule *rule, uint8_t reason) | |
3710 | { | |
7ee20df1 BP |
3711 | struct ofproto *ofproto = rule->ofproto; |
3712 | struct ofopgroup *group; | |
3713 | ||
cb22974d | 3714 | ovs_assert(reason == OFPRR_HARD_TIMEOUT || reason == OFPRR_IDLE_TIMEOUT); |
7ee20df1 | 3715 | |
abe529af | 3716 | ofproto_rule_send_removed(rule, reason); |
7ee20df1 | 3717 | |
7024dffe | 3718 | group = ofopgroup_create_unattached(ofproto); |
2b07c8b1 | 3719 | ofoperation_create(group, rule, OFOPERATION_DELETE, reason); |
d0918789 | 3720 | oftable_remove_rule(rule); |
254750ce | 3721 | ofproto->ofproto_class->rule_destruct(rule); |
7ee20df1 | 3722 | ofopgroup_submit(group); |
79eee1eb BP |
3723 | } |
3724 | \f | |
90bf1e07 | 3725 | static enum ofperr |
2e4f5fcf | 3726 | handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3727 | { |
a5b8d268 | 3728 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
a9a2da38 | 3729 | struct ofputil_flow_mod fm; |
f25d0cf3 BP |
3730 | uint64_t ofpacts_stub[1024 / 8]; |
3731 | struct ofpbuf ofpacts; | |
90bf1e07 | 3732 | enum ofperr error; |
a5b8d268 | 3733 | long long int now; |
064af421 | 3734 | |
76589937 | 3735 | error = reject_slave_controller(ofconn); |
9deba63b | 3736 | if (error) { |
f25d0cf3 | 3737 | goto exit; |
9deba63b | 3738 | } |
3052b0c5 | 3739 | |
f25d0cf3 BP |
3740 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
3741 | error = ofputil_decode_flow_mod(&fm, oh, ofconn_get_protocol(ofconn), | |
3742 | &ofpacts); | |
548de4dd | 3743 | if (!error) { |
f1822532 | 3744 | error = handle_flow_mod__(ofproto, ofconn, &fm, oh); |
49bdc010 | 3745 | } |
a5b8d268 | 3746 | if (error) { |
f25d0cf3 | 3747 | goto exit_free_ofpacts; |
a5b8d268 | 3748 | } |
2e310801 | 3749 | |
a5b8d268 BP |
3750 | /* Record the operation for logging a summary report. */ |
3751 | switch (fm.command) { | |
3752 | case OFPFC_ADD: | |
3753 | ofproto->n_add++; | |
3754 | break; | |
3755 | ||
3756 | case OFPFC_MODIFY: | |
3757 | case OFPFC_MODIFY_STRICT: | |
3758 | ofproto->n_modify++; | |
3759 | break; | |
3760 | ||
3761 | case OFPFC_DELETE: | |
3762 | case OFPFC_DELETE_STRICT: | |
3763 | ofproto->n_delete++; | |
3764 | break; | |
3765 | } | |
3766 | ||
3767 | now = time_msec(); | |
3768 | if (ofproto->next_op_report == LLONG_MAX) { | |
3769 | ofproto->first_op = now; | |
3770 | ofproto->next_op_report = MAX(now + 10 * 1000, | |
3771 | ofproto->op_backoff); | |
3772 | ofproto->op_backoff = ofproto->next_op_report + 60 * 1000; | |
3773 | } | |
3774 | ofproto->last_op = now; | |
3775 | ||
f25d0cf3 BP |
3776 | exit_free_ofpacts: |
3777 | ofpbuf_uninit(&ofpacts); | |
3778 | exit: | |
3779 | return error; | |
75a75043 BP |
3780 | } |
3781 | ||
90bf1e07 | 3782 | static enum ofperr |
75a75043 | 3783 | handle_flow_mod__(struct ofproto *ofproto, struct ofconn *ofconn, |
e3b56933 | 3784 | struct ofputil_flow_mod *fm, const struct ofp_header *oh) |
75a75043 BP |
3785 | { |
3786 | if (ofproto->n_pending >= 50) { | |
cb22974d | 3787 | ovs_assert(!list_is_empty(&ofproto->pending)); |
75a75043 BP |
3788 | return OFPROTO_POSTPONE; |
3789 | } | |
3790 | ||
3791 | switch (fm->command) { | |
3052b0c5 | 3792 | case OFPFC_ADD: |
75a75043 | 3793 | return add_flow(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3794 | |
3795 | case OFPFC_MODIFY: | |
75a75043 | 3796 | return modify_flows_loose(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3797 | |
3798 | case OFPFC_MODIFY_STRICT: | |
75a75043 | 3799 | return modify_flow_strict(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3800 | |
3801 | case OFPFC_DELETE: | |
75a75043 | 3802 | return delete_flows_loose(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3803 | |
3804 | case OFPFC_DELETE_STRICT: | |
75a75043 | 3805 | return delete_flow_strict(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3806 | |
3807 | default: | |
75a75043 | 3808 | if (fm->command > 0xff) { |
fbfa2911 BP |
3809 | VLOG_WARN_RL(&rl, "%s: flow_mod has explicit table_id but " |
3810 | "flow_mod_table_id extension is not enabled", | |
3811 | ofproto->name); | |
6c1491fb | 3812 | } |
90bf1e07 | 3813 | return OFPERR_OFPFMFC_BAD_COMMAND; |
3052b0c5 BP |
3814 | } |
3815 | } | |
3816 | ||
90bf1e07 | 3817 | static enum ofperr |
d1e2cf21 | 3818 | handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh) |
9deba63b | 3819 | { |
f4f1ea7e BP |
3820 | struct ofputil_role_request request; |
3821 | struct ofputil_role_request reply; | |
9deba63b | 3822 | struct ofpbuf *buf; |
6ea4776b JR |
3823 | enum ofperr error; |
3824 | ||
f4f1ea7e | 3825 | error = ofputil_decode_role_message(oh, &request); |
6ea4776b JR |
3826 | if (error) { |
3827 | return error; | |
3828 | } | |
9deba63b | 3829 | |
f4f1ea7e BP |
3830 | if (request.role != OFPCR12_ROLE_NOCHANGE) { |
3831 | if (ofconn_get_role(ofconn) != request.role | |
3832 | && ofconn_has_pending_opgroups(ofconn)) { | |
3833 | return OFPROTO_POSTPONE; | |
3834 | } | |
7ee20df1 | 3835 | |
f4f1ea7e BP |
3836 | if (request.have_generation_id |
3837 | && !ofconn_set_master_election_id(ofconn, request.generation_id)) { | |
3838 | return OFPERR_OFPRRFC_STALE; | |
6ea4776b | 3839 | } |
6ea4776b | 3840 | |
f4f1ea7e BP |
3841 | ofconn_set_role(ofconn, request.role); |
3842 | } | |
9deba63b | 3843 | |
f4f1ea7e | 3844 | reply.role = ofconn_get_role(ofconn); |
147cc9d3 BP |
3845 | reply.have_generation_id = ofconn_get_master_election_id( |
3846 | ofconn, &reply.generation_id); | |
f4f1ea7e | 3847 | buf = ofputil_encode_role_reply(oh, &reply); |
b0421aa2 | 3848 | ofconn_send_reply(ofconn, buf); |
9deba63b BP |
3849 | |
3850 | return 0; | |
3851 | } | |
3852 | ||
90bf1e07 | 3853 | static enum ofperr |
6c1491fb BP |
3854 | handle_nxt_flow_mod_table_id(struct ofconn *ofconn, |
3855 | const struct ofp_header *oh) | |
3856 | { | |
982697a4 | 3857 | const struct nx_flow_mod_table_id *msg = ofpmsg_body(oh); |
27527aa0 BP |
3858 | enum ofputil_protocol cur, next; |
3859 | ||
3860 | cur = ofconn_get_protocol(ofconn); | |
3861 | next = ofputil_protocol_set_tid(cur, msg->set != 0); | |
3862 | ofconn_set_protocol(ofconn, next); | |
6c1491fb | 3863 | |
6c1491fb BP |
3864 | return 0; |
3865 | } | |
3866 | ||
90bf1e07 | 3867 | static enum ofperr |
d1e2cf21 | 3868 | handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh) |
09246b99 | 3869 | { |
982697a4 | 3870 | const struct nx_set_flow_format *msg = ofpmsg_body(oh); |
27527aa0 BP |
3871 | enum ofputil_protocol cur, next; |
3872 | enum ofputil_protocol next_base; | |
09246b99 | 3873 | |
27527aa0 BP |
3874 | next_base = ofputil_nx_flow_format_to_protocol(ntohl(msg->format)); |
3875 | if (!next_base) { | |
90bf1e07 | 3876 | return OFPERR_OFPBRC_EPERM; |
09246b99 | 3877 | } |
7ee20df1 | 3878 | |
27527aa0 BP |
3879 | cur = ofconn_get_protocol(ofconn); |
3880 | next = ofputil_protocol_set_base(cur, next_base); | |
3881 | if (cur != next && ofconn_has_pending_opgroups(ofconn)) { | |
3882 | /* Avoid sending async messages in surprising protocol. */ | |
7ee20df1 BP |
3883 | return OFPROTO_POSTPONE; |
3884 | } | |
3885 | ||
27527aa0 | 3886 | ofconn_set_protocol(ofconn, next); |
7ee20df1 | 3887 | return 0; |
09246b99 BP |
3888 | } |
3889 | ||
90bf1e07 | 3890 | static enum ofperr |
54834960 EJ |
3891 | handle_nxt_set_packet_in_format(struct ofconn *ofconn, |
3892 | const struct ofp_header *oh) | |
3893 | { | |
982697a4 | 3894 | const struct nx_set_packet_in_format *msg = ofpmsg_body(oh); |
54834960 EJ |
3895 | uint32_t format; |
3896 | ||
54834960 | 3897 | format = ntohl(msg->format); |
a15f0eeb | 3898 | if (format != NXPIF_OPENFLOW10 && format != NXPIF_NXM) { |
90bf1e07 | 3899 | return OFPERR_OFPBRC_EPERM; |
54834960 EJ |
3900 | } |
3901 | ||
3902 | if (format != ofconn_get_packet_in_format(ofconn) | |
3903 | && ofconn_has_pending_opgroups(ofconn)) { | |
3904 | /* Avoid sending async message in surprsing packet in format. */ | |
3905 | return OFPROTO_POSTPONE; | |
3906 | } | |
3907 | ||
3908 | ofconn_set_packet_in_format(ofconn, format); | |
3909 | return 0; | |
3910 | } | |
3911 | ||
80d5aefd BP |
3912 | static enum ofperr |
3913 | handle_nxt_set_async_config(struct ofconn *ofconn, const struct ofp_header *oh) | |
3914 | { | |
982697a4 | 3915 | const struct nx_async_config *msg = ofpmsg_body(oh); |
80d5aefd BP |
3916 | uint32_t master[OAM_N_TYPES]; |
3917 | uint32_t slave[OAM_N_TYPES]; | |
3918 | ||
3919 | master[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[0]); | |
3920 | master[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[0]); | |
3921 | master[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[0]); | |
3922 | ||
3923 | slave[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[1]); | |
3924 | slave[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[1]); | |
3925 | slave[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[1]); | |
3926 | ||
3927 | ofconn_set_async_config(ofconn, master, slave); | |
4550b647 MM |
3928 | if (ofconn_get_type(ofconn) == OFCONN_SERVICE && |
3929 | !ofconn_get_miss_send_len(ofconn)) { | |
3930 | ofconn_set_miss_send_len(ofconn, OFP_DEFAULT_MISS_SEND_LEN); | |
3931 | } | |
80d5aefd BP |
3932 | |
3933 | return 0; | |
3934 | } | |
3935 | ||
a7349929 BP |
3936 | static enum ofperr |
3937 | handle_nxt_set_controller_id(struct ofconn *ofconn, | |
3938 | const struct ofp_header *oh) | |
3939 | { | |
982697a4 | 3940 | const struct nx_controller_id *nci = ofpmsg_body(oh); |
a7349929 | 3941 | |
a7349929 BP |
3942 | if (!is_all_zeros(nci->zero, sizeof nci->zero)) { |
3943 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
3944 | } | |
3945 | ||
3946 | ofconn_set_controller_id(ofconn, ntohs(nci->controller_id)); | |
3947 | return 0; | |
3948 | } | |
3949 | ||
90bf1e07 | 3950 | static enum ofperr |
d1e2cf21 | 3951 | handle_barrier_request(struct ofconn *ofconn, const struct ofp_header *oh) |
246e61ea | 3952 | { |
246e61ea JP |
3953 | struct ofpbuf *buf; |
3954 | ||
7ee20df1 BP |
3955 | if (ofconn_has_pending_opgroups(ofconn)) { |
3956 | return OFPROTO_POSTPONE; | |
3957 | } | |
3958 | ||
982697a4 BP |
3959 | buf = ofpraw_alloc_reply((oh->version == OFP10_VERSION |
3960 | ? OFPRAW_OFPT10_BARRIER_REPLY | |
3961 | : OFPRAW_OFPT11_BARRIER_REPLY), oh, 0); | |
b0421aa2 | 3962 | ofconn_send_reply(ofconn, buf); |
246e61ea JP |
3963 | return 0; |
3964 | } | |
3965 | ||
2b07c8b1 BP |
3966 | static void |
3967 | ofproto_compose_flow_refresh_update(const struct rule *rule, | |
3968 | enum nx_flow_monitor_flags flags, | |
3969 | struct list *msgs) | |
3970 | { | |
3971 | struct ofoperation *op = rule->pending; | |
3972 | struct ofputil_flow_update fu; | |
5cb7a798 | 3973 | struct match match; |
2b07c8b1 BP |
3974 | |
3975 | if (op && op->type == OFOPERATION_ADD && !op->victim) { | |
3976 | /* We'll report the final flow when the operation completes. Reporting | |
3977 | * it now would cause a duplicate report later. */ | |
3978 | return; | |
3979 | } | |
3980 | ||
3981 | fu.event = (flags & (NXFMF_INITIAL | NXFMF_ADD) | |
3982 | ? NXFME_ADDED : NXFME_MODIFIED); | |
3983 | fu.reason = 0; | |
a3779dbc | 3984 | ovs_mutex_lock(&rule->timeout_mutex); |
2b07c8b1 BP |
3985 | fu.idle_timeout = rule->idle_timeout; |
3986 | fu.hard_timeout = rule->hard_timeout; | |
a3779dbc | 3987 | ovs_mutex_unlock(&rule->timeout_mutex); |
2b07c8b1 BP |
3988 | fu.table_id = rule->table_id; |
3989 | fu.cookie = rule->flow_cookie; | |
5cb7a798 BP |
3990 | minimatch_expand(&rule->cr.match, &match); |
3991 | fu.match = &match; | |
6b140a4e | 3992 | fu.priority = rule->cr.priority; |
2b07c8b1 BP |
3993 | if (!(flags & NXFMF_ACTIONS)) { |
3994 | fu.ofpacts = NULL; | |
3995 | fu.ofpacts_len = 0; | |
3996 | } else if (!op) { | |
3997 | fu.ofpacts = rule->ofpacts; | |
3998 | fu.ofpacts_len = rule->ofpacts_len; | |
3999 | } else { | |
4000 | /* An operation is in progress. Use the previous version of the flow's | |
4001 | * actions, so that when the operation commits we report the change. */ | |
4002 | switch (op->type) { | |
4003 | case OFOPERATION_ADD: | |
4004 | /* We already verified that there was a victim. */ | |
4005 | fu.ofpacts = op->victim->ofpacts; | |
4006 | fu.ofpacts_len = op->victim->ofpacts_len; | |
4007 | break; | |
4008 | ||
4009 | case OFOPERATION_MODIFY: | |
4010 | if (op->ofpacts) { | |
4011 | fu.ofpacts = op->ofpacts; | |
4012 | fu.ofpacts_len = op->ofpacts_len; | |
4013 | } else { | |
4014 | fu.ofpacts = rule->ofpacts; | |
4015 | fu.ofpacts_len = rule->ofpacts_len; | |
4016 | } | |
4017 | break; | |
4018 | ||
4019 | case OFOPERATION_DELETE: | |
4020 | fu.ofpacts = rule->ofpacts; | |
4021 | fu.ofpacts_len = rule->ofpacts_len; | |
4022 | break; | |
4023 | ||
4024 | default: | |
4025 | NOT_REACHED(); | |
4026 | } | |
4027 | } | |
4028 | ||
4029 | if (list_is_empty(msgs)) { | |
4030 | ofputil_start_flow_update(msgs); | |
4031 | } | |
4032 | ofputil_append_flow_update(&fu, msgs); | |
4033 | } | |
4034 | ||
4035 | void | |
4036 | ofmonitor_compose_refresh_updates(struct list *rules, struct list *msgs) | |
4037 | { | |
4038 | struct rule *rule; | |
4039 | ||
4040 | LIST_FOR_EACH (rule, ofproto_node, rules) { | |
4041 | enum nx_flow_monitor_flags flags = rule->monitor_flags; | |
4042 | rule->monitor_flags = 0; | |
4043 | ||
4044 | ofproto_compose_flow_refresh_update(rule, flags, msgs); | |
4045 | } | |
4046 | } | |
4047 | ||
4048 | static void | |
4049 | ofproto_collect_ofmonitor_refresh_rule(const struct ofmonitor *m, | |
4050 | struct rule *rule, uint64_t seqno, | |
4051 | struct list *rules) | |
4052 | { | |
4053 | enum nx_flow_monitor_flags update; | |
4054 | ||
4055 | if (ofproto_rule_is_hidden(rule)) { | |
4056 | return; | |
4057 | } | |
4058 | ||
4059 | if (!(rule->pending | |
4060 | ? ofoperation_has_out_port(rule->pending, m->out_port) | |
4061 | : ofproto_rule_has_out_port(rule, m->out_port))) { | |
4062 | return; | |
4063 | } | |
4064 | ||
4065 | if (seqno) { | |
4066 | if (rule->add_seqno > seqno) { | |
4067 | update = NXFMF_ADD | NXFMF_MODIFY; | |
4068 | } else if (rule->modify_seqno > seqno) { | |
4069 | update = NXFMF_MODIFY; | |
4070 | } else { | |
4071 | return; | |
4072 | } | |
4073 | ||
4074 | if (!(m->flags & update)) { | |
4075 | return; | |
4076 | } | |
4077 | } else { | |
4078 | update = NXFMF_INITIAL; | |
4079 | } | |
4080 | ||
4081 | if (!rule->monitor_flags) { | |
4082 | list_push_back(rules, &rule->ofproto_node); | |
4083 | } | |
4084 | rule->monitor_flags |= update | (m->flags & NXFMF_ACTIONS); | |
4085 | } | |
4086 | ||
4087 | static void | |
4088 | ofproto_collect_ofmonitor_refresh_rules(const struct ofmonitor *m, | |
4089 | uint64_t seqno, | |
4090 | struct list *rules) | |
4091 | { | |
4092 | const struct ofproto *ofproto = ofconn_get_ofproto(m->ofconn); | |
4093 | const struct ofoperation *op; | |
4094 | const struct oftable *table; | |
81a76618 | 4095 | struct cls_rule target; |
2b07c8b1 | 4096 | |
5cb7a798 | 4097 | cls_rule_init_from_minimatch(&target, &m->match, 0); |
2b07c8b1 BP |
4098 | FOR_EACH_MATCHING_TABLE (table, m->table_id, ofproto) { |
4099 | struct cls_cursor cursor; | |
4100 | struct rule *rule; | |
4101 | ||
81a76618 | 4102 | cls_cursor_init(&cursor, &table->cls, &target); |
2b07c8b1 | 4103 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
cb22974d | 4104 | ovs_assert(!rule->pending); /* XXX */ |
2b07c8b1 BP |
4105 | ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules); |
4106 | } | |
4107 | } | |
4108 | ||
4109 | HMAP_FOR_EACH (op, hmap_node, &ofproto->deletions) { | |
4110 | struct rule *rule = op->rule; | |
4111 | ||
4112 | if (((m->table_id == 0xff | |
4113 | ? !(ofproto->tables[rule->table_id].flags & OFTABLE_HIDDEN) | |
4114 | : m->table_id == rule->table_id)) | |
81a76618 | 4115 | && cls_rule_is_loose_match(&rule->cr, &target.match)) { |
2b07c8b1 BP |
4116 | ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules); |
4117 | } | |
4118 | } | |
48d28ac1 | 4119 | cls_rule_destroy(&target); |
2b07c8b1 BP |
4120 | } |
4121 | ||
4122 | static void | |
4123 | ofproto_collect_ofmonitor_initial_rules(struct ofmonitor *m, | |
4124 | struct list *rules) | |
4125 | { | |
4126 | if (m->flags & NXFMF_INITIAL) { | |
4127 | ofproto_collect_ofmonitor_refresh_rules(m, 0, rules); | |
4128 | } | |
4129 | } | |
4130 | ||
4131 | void | |
4132 | ofmonitor_collect_resume_rules(struct ofmonitor *m, | |
4133 | uint64_t seqno, struct list *rules) | |
4134 | { | |
4135 | ofproto_collect_ofmonitor_refresh_rules(m, seqno, rules); | |
4136 | } | |
4137 | ||
4138 | static enum ofperr | |
982697a4 | 4139 | handle_flow_monitor_request(struct ofconn *ofconn, const struct ofp_header *oh) |
2b07c8b1 BP |
4140 | { |
4141 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
4142 | struct ofmonitor **monitors; | |
4143 | size_t n_monitors, allocated_monitors; | |
4144 | struct list replies; | |
4145 | enum ofperr error; | |
4146 | struct list rules; | |
4147 | struct ofpbuf b; | |
4148 | size_t i; | |
4149 | ||
4150 | error = 0; | |
982697a4 | 4151 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
2b07c8b1 BP |
4152 | monitors = NULL; |
4153 | n_monitors = allocated_monitors = 0; | |
4154 | for (;;) { | |
4155 | struct ofputil_flow_monitor_request request; | |
4156 | struct ofmonitor *m; | |
4157 | int retval; | |
4158 | ||
4159 | retval = ofputil_decode_flow_monitor_request(&request, &b); | |
4160 | if (retval == EOF) { | |
4161 | break; | |
4162 | } else if (retval) { | |
4163 | error = retval; | |
4164 | goto error; | |
4165 | } | |
4166 | ||
4167 | if (request.table_id != 0xff | |
4168 | && request.table_id >= ofproto->n_tables) { | |
4169 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
4170 | goto error; | |
4171 | } | |
4172 | ||
4173 | error = ofmonitor_create(&request, ofconn, &m); | |
4174 | if (error) { | |
4175 | goto error; | |
4176 | } | |
4177 | ||
4178 | if (n_monitors >= allocated_monitors) { | |
4179 | monitors = x2nrealloc(monitors, &allocated_monitors, | |
4180 | sizeof *monitors); | |
4181 | } | |
4182 | monitors[n_monitors++] = m; | |
4183 | } | |
4184 | ||
4185 | list_init(&rules); | |
4186 | for (i = 0; i < n_monitors; i++) { | |
4187 | ofproto_collect_ofmonitor_initial_rules(monitors[i], &rules); | |
4188 | } | |
4189 | ||
982697a4 | 4190 | ofpmp_init(&replies, oh); |
2b07c8b1 BP |
4191 | ofmonitor_compose_refresh_updates(&rules, &replies); |
4192 | ofconn_send_replies(ofconn, &replies); | |
4193 | ||
4194 | free(monitors); | |
4195 | ||
4196 | return 0; | |
4197 | ||
4198 | error: | |
4199 | for (i = 0; i < n_monitors; i++) { | |
4200 | ofmonitor_destroy(monitors[i]); | |
4201 | } | |
4202 | free(monitors); | |
4203 | return error; | |
4204 | } | |
4205 | ||
4206 | static enum ofperr | |
4207 | handle_flow_monitor_cancel(struct ofconn *ofconn, const struct ofp_header *oh) | |
4208 | { | |
4209 | struct ofmonitor *m; | |
4210 | uint32_t id; | |
4211 | ||
4212 | id = ofputil_decode_flow_monitor_cancel(oh); | |
4213 | m = ofmonitor_lookup(ofconn, id); | |
4214 | if (!m) { | |
4215 | return OFPERR_NXBRC_FM_BAD_ID; | |
4216 | } | |
4217 | ||
4218 | ofmonitor_destroy(m); | |
4219 | return 0; | |
4220 | } | |
4221 | ||
9cae45dc JR |
4222 | /* Meters implementation. |
4223 | * | |
4224 | * Meter table entry, indexed by the OpenFlow meter_id. | |
4225 | * These are always dynamically allocated to allocate enough space for | |
4226 | * the bands. | |
4227 | * 'created' is used to compute the duration for meter stats. | |
4228 | * 'list rules' is needed so that we can delete the dependent rules when the | |
4229 | * meter table entry is deleted. | |
4230 | * 'provider_meter_id' is for the provider's private use. | |
4231 | */ | |
4232 | struct meter { | |
4233 | long long int created; /* Time created. */ | |
4234 | struct list rules; /* List of "struct rule_dpif"s. */ | |
4235 | ofproto_meter_id provider_meter_id; | |
4236 | uint16_t flags; /* Meter flags. */ | |
4237 | uint16_t n_bands; /* Number of meter bands. */ | |
4238 | struct ofputil_meter_band *bands; | |
4239 | }; | |
4240 | ||
4241 | /* | |
4242 | * This is used in instruction validation at flow set-up time, | |
4243 | * as flows may not use non-existing meters. | |
4244 | * This is also used by ofproto-providers to translate OpenFlow meter_ids | |
4245 | * in METER instructions to the corresponding provider meter IDs. | |
4246 | * Return value of UINT32_MAX signifies an invalid meter. | |
4247 | */ | |
4248 | uint32_t | |
4249 | ofproto_get_provider_meter_id(const struct ofproto * ofproto, | |
4250 | uint32_t of_meter_id) | |
4251 | { | |
4252 | if (of_meter_id && of_meter_id <= ofproto->meter_features.max_meters) { | |
4253 | const struct meter *meter = ofproto->meters[of_meter_id]; | |
4254 | if (meter) { | |
4255 | return meter->provider_meter_id.uint32; | |
4256 | } | |
4257 | } | |
4258 | return UINT32_MAX; | |
4259 | } | |
4260 | ||
4261 | static void | |
4262 | meter_update(struct meter *meter, const struct ofputil_meter_config *config) | |
4263 | { | |
4264 | free(meter->bands); | |
4265 | ||
4266 | meter->flags = config->flags; | |
4267 | meter->n_bands = config->n_bands; | |
4268 | meter->bands = xmemdup(config->bands, | |
4269 | config->n_bands * sizeof *meter->bands); | |
4270 | } | |
4271 | ||
4272 | static struct meter * | |
4273 | meter_create(const struct ofputil_meter_config *config, | |
4274 | ofproto_meter_id provider_meter_id) | |
4275 | { | |
4276 | struct meter *meter; | |
4277 | ||
4278 | meter = xzalloc(sizeof *meter); | |
4279 | meter->provider_meter_id = provider_meter_id; | |
4280 | meter->created = time_msec(); | |
4281 | list_init(&meter->rules); | |
4282 | ||
4283 | meter_update(meter, config); | |
4284 | ||
4285 | return meter; | |
4286 | } | |
4287 | ||
6b3f7f02 JR |
4288 | static void |
4289 | meter_delete(struct ofproto *ofproto, uint32_t first, uint32_t last) | |
4290 | { | |
4291 | uint32_t mid; | |
4292 | for (mid = first; mid <= last; ++mid) { | |
4293 | struct meter *meter = ofproto->meters[mid]; | |
4294 | if (meter) { | |
4295 | ofproto->meters[mid] = NULL; | |
4296 | ofproto->ofproto_class->meter_del(ofproto, | |
4297 | meter->provider_meter_id); | |
4298 | free(meter->bands); | |
4299 | free(meter); | |
4300 | } | |
4301 | } | |
4302 | } | |
4303 | ||
9cae45dc JR |
4304 | static enum ofperr |
4305 | handle_add_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm) | |
4306 | { | |
4307 | ofproto_meter_id provider_meter_id = { UINT32_MAX }; | |
4308 | struct meter **meterp = &ofproto->meters[mm->meter.meter_id]; | |
4309 | enum ofperr error; | |
4310 | ||
4311 | if (*meterp) { | |
4312 | return OFPERR_OFPMMFC_METER_EXISTS; | |
4313 | } | |
4314 | ||
4315 | error = ofproto->ofproto_class->meter_set(ofproto, &provider_meter_id, | |
4316 | &mm->meter); | |
4317 | if (!error) { | |
4318 | ovs_assert(provider_meter_id.uint32 != UINT32_MAX); | |
4319 | *meterp = meter_create(&mm->meter, provider_meter_id); | |
4320 | } | |
4321 | return 0; | |
4322 | } | |
4323 | ||
4324 | static enum ofperr | |
4325 | handle_modify_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm) | |
4326 | { | |
4327 | struct meter *meter = ofproto->meters[mm->meter.meter_id]; | |
4328 | enum ofperr error; | |
4329 | ||
4330 | if (!meter) { | |
4331 | return OFPERR_OFPMMFC_UNKNOWN_METER; | |
4332 | } | |
4333 | ||
4334 | error = ofproto->ofproto_class->meter_set(ofproto, | |
4335 | &meter->provider_meter_id, | |
4336 | &mm->meter); | |
4337 | ovs_assert(meter->provider_meter_id.uint32 != UINT32_MAX); | |
4338 | if (!error) { | |
4339 | meter_update(meter, &mm->meter); | |
4340 | } | |
4341 | return error; | |
4342 | } | |
4343 | ||
4344 | static enum ofperr | |
4345 | handle_delete_meter(struct ofconn *ofconn, const struct ofp_header *oh, | |
4346 | struct ofputil_meter_mod *mm) | |
4347 | { | |
4348 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
4349 | uint32_t meter_id = mm->meter.meter_id; | |
4350 | uint32_t first, last; | |
4351 | struct list rules; | |
4352 | ||
4353 | if (meter_id == OFPM13_ALL) { | |
4354 | first = 1; | |
4355 | last = ofproto->meter_features.max_meters; | |
4356 | } else { | |
4357 | if (!meter_id || meter_id > ofproto->meter_features.max_meters) { | |
4358 | return 0; | |
4359 | } | |
4360 | first = last = meter_id; | |
4361 | } | |
4362 | ||
4363 | /* First delete the rules that use this meter. If any of those rules are | |
4364 | * currently being modified, postpone the whole operation until later. */ | |
4365 | list_init(&rules); | |
4366 | for (meter_id = first; meter_id <= last; ++meter_id) { | |
4367 | struct meter *meter = ofproto->meters[meter_id]; | |
4368 | if (meter && !list_is_empty(&meter->rules)) { | |
4369 | struct rule *rule; | |
4370 | ||
4371 | LIST_FOR_EACH (rule, meter_list_node, &meter->rules) { | |
4372 | if (rule->pending) { | |
4373 | return OFPROTO_POSTPONE; | |
4374 | } | |
4375 | list_push_back(&rules, &rule->ofproto_node); | |
4376 | } | |
4377 | } | |
4378 | } | |
4379 | if (!list_is_empty(&rules)) { | |
4380 | delete_flows__(ofproto, ofconn, oh, &rules, OFPRR_METER_DELETE); | |
4381 | } | |
4382 | ||
4383 | /* Delete the meters. */ | |
6b3f7f02 | 4384 | meter_delete(ofproto, first, last); |
9cae45dc JR |
4385 | |
4386 | return 0; | |
4387 | } | |
4388 | ||
4389 | static enum ofperr | |
4390 | handle_meter_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
4391 | { | |
4392 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
4393 | struct ofputil_meter_mod mm; | |
4394 | uint64_t bands_stub[256 / 8]; | |
4395 | struct ofpbuf bands; | |
4396 | uint32_t meter_id; | |
4397 | enum ofperr error; | |
4398 | ||
4399 | error = reject_slave_controller(ofconn); | |
4400 | if (error) { | |
4401 | return error; | |
4402 | } | |
4403 | ||
4404 | ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub); | |
4405 | ||
4406 | error = ofputil_decode_meter_mod(oh, &mm, &bands); | |
4407 | if (error) { | |
4408 | goto exit_free_bands; | |
4409 | } | |
4410 | ||
4411 | meter_id = mm.meter.meter_id; | |
4412 | ||
4413 | if (mm.command != OFPMC13_DELETE) { | |
4414 | /* Fails also when meters are not implemented by the provider. */ | |
4415 | if (!meter_id || meter_id > ofproto->meter_features.max_meters) { | |
4416 | error = OFPERR_OFPMMFC_INVALID_METER; | |
4417 | goto exit_free_bands; | |
4418 | } | |
4419 | if (mm.meter.n_bands > ofproto->meter_features.max_bands) { | |
4420 | error = OFPERR_OFPMMFC_OUT_OF_BANDS; | |
4421 | goto exit_free_bands; | |
4422 | } | |
4423 | } | |
4424 | ||
4425 | switch (mm.command) { | |
4426 | case OFPMC13_ADD: | |
4427 | error = handle_add_meter(ofproto, &mm); | |
4428 | break; | |
4429 | ||
4430 | case OFPMC13_MODIFY: | |
4431 | error = handle_modify_meter(ofproto, &mm); | |
4432 | break; | |
4433 | ||
4434 | case OFPMC13_DELETE: | |
4435 | error = handle_delete_meter(ofconn, oh, &mm); | |
4436 | break; | |
4437 | ||
4438 | default: | |
4439 | error = OFPERR_OFPMMFC_BAD_COMMAND; | |
4440 | break; | |
4441 | } | |
4442 | ||
4443 | exit_free_bands: | |
4444 | ofpbuf_uninit(&bands); | |
4445 | return error; | |
4446 | } | |
4447 | ||
4448 | static enum ofperr | |
4449 | handle_meter_features_request(struct ofconn *ofconn, | |
4450 | const struct ofp_header *request) | |
4451 | { | |
4452 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
4453 | struct ofputil_meter_features features; | |
4454 | struct ofpbuf *b; | |
4455 | ||
4456 | if (ofproto->ofproto_class->meter_get_features) { | |
4457 | ofproto->ofproto_class->meter_get_features(ofproto, &features); | |
4458 | } else { | |
4459 | memset(&features, 0, sizeof features); | |
4460 | } | |
4461 | b = ofputil_encode_meter_features_reply(&features, request); | |
4462 | ||
4463 | ofconn_send_reply(ofconn, b); | |
4464 | return 0; | |
4465 | } | |
4466 | ||
4467 | static enum ofperr | |
4468 | handle_meter_request(struct ofconn *ofconn, const struct ofp_header *request, | |
4469 | enum ofptype type) | |
4470 | { | |
4471 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
4472 | struct list replies; | |
4473 | uint64_t bands_stub[256 / 8]; | |
4474 | struct ofpbuf bands; | |
4475 | uint32_t meter_id, first, last; | |
4476 | ||
4477 | ofputil_decode_meter_request(request, &meter_id); | |
4478 | ||
4479 | if (meter_id == OFPM13_ALL) { | |
4480 | first = 1; | |
4481 | last = ofproto->meter_features.max_meters; | |
4482 | } else { | |
4483 | if (!meter_id || meter_id > ofproto->meter_features.max_meters || | |
4484 | !ofproto->meters[meter_id]) { | |
4485 | return OFPERR_OFPMMFC_UNKNOWN_METER; | |
4486 | } | |
4487 | first = last = meter_id; | |
4488 | } | |
4489 | ||
4490 | ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub); | |
4491 | ofpmp_init(&replies, request); | |
4492 | ||
4493 | for (meter_id = first; meter_id <= last; ++meter_id) { | |
4494 | struct meter *meter = ofproto->meters[meter_id]; | |
4495 | if (!meter) { | |
4496 | continue; /* Skip non-existing meters. */ | |
4497 | } | |
261bd854 | 4498 | if (type == OFPTYPE_METER_STATS_REQUEST) { |
9cae45dc JR |
4499 | struct ofputil_meter_stats stats; |
4500 | ||
4501 | stats.meter_id = meter_id; | |
4502 | ||
4503 | /* Provider sets the packet and byte counts, we do the rest. */ | |
4504 | stats.flow_count = list_size(&meter->rules); | |
4505 | calc_duration(meter->created, time_msec(), | |
4506 | &stats.duration_sec, &stats.duration_nsec); | |
4507 | stats.n_bands = meter->n_bands; | |
4508 | ofpbuf_clear(&bands); | |
4509 | stats.bands | |
4510 | = ofpbuf_put_uninit(&bands, | |
4511 | meter->n_bands * sizeof *stats.bands); | |
4512 | ||
4513 | if (!ofproto->ofproto_class->meter_get(ofproto, | |
4514 | meter->provider_meter_id, | |
4515 | &stats)) { | |
4516 | ofputil_append_meter_stats(&replies, &stats); | |
4517 | } | |
4518 | } else { /* type == OFPTYPE_METER_CONFIG_REQUEST */ | |
4519 | struct ofputil_meter_config config; | |
4520 | ||
4521 | config.meter_id = meter_id; | |
4522 | config.flags = meter->flags; | |
4523 | config.n_bands = meter->n_bands; | |
4524 | config.bands = meter->bands; | |
4525 | ofputil_append_meter_config(&replies, &config); | |
4526 | } | |
4527 | } | |
4528 | ||
4529 | ofconn_send_replies(ofconn, &replies); | |
4530 | ofpbuf_uninit(&bands); | |
4531 | return 0; | |
4532 | } | |
4533 | ||
90bf1e07 | 4534 | static enum ofperr |
d1e2cf21 | 4535 | handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg) |
064af421 | 4536 | { |
d1e2cf21 | 4537 | const struct ofp_header *oh = msg->data; |
982697a4 | 4538 | enum ofptype type; |
90bf1e07 | 4539 | enum ofperr error; |
064af421 | 4540 | |
982697a4 | 4541 | error = ofptype_decode(&type, oh); |
d1e2cf21 BP |
4542 | if (error) { |
4543 | return error; | |
4544 | } | |
064af421 | 4545 | |
982697a4 | 4546 | switch (type) { |
d1e2cf21 | 4547 | /* OpenFlow requests. */ |
982697a4 | 4548 | case OFPTYPE_ECHO_REQUEST: |
d1e2cf21 | 4549 | return handle_echo_request(ofconn, oh); |
064af421 | 4550 | |
982697a4 | 4551 | case OFPTYPE_FEATURES_REQUEST: |
d1e2cf21 | 4552 | return handle_features_request(ofconn, oh); |
064af421 | 4553 | |
982697a4 | 4554 | case OFPTYPE_GET_CONFIG_REQUEST: |
d1e2cf21 | 4555 | return handle_get_config_request(ofconn, oh); |
064af421 | 4556 | |
982697a4 BP |
4557 | case OFPTYPE_SET_CONFIG: |
4558 | return handle_set_config(ofconn, oh); | |
064af421 | 4559 | |
982697a4 BP |
4560 | case OFPTYPE_PACKET_OUT: |
4561 | return handle_packet_out(ofconn, oh); | |
064af421 | 4562 | |
982697a4 | 4563 | case OFPTYPE_PORT_MOD: |
d1e2cf21 | 4564 | return handle_port_mod(ofconn, oh); |
064af421 | 4565 | |
982697a4 | 4566 | case OFPTYPE_FLOW_MOD: |
2e4f5fcf | 4567 | return handle_flow_mod(ofconn, oh); |
064af421 | 4568 | |
9cae45dc JR |
4569 | case OFPTYPE_METER_MOD: |
4570 | return handle_meter_mod(ofconn, oh); | |
4571 | ||
982697a4 | 4572 | case OFPTYPE_BARRIER_REQUEST: |
d1e2cf21 | 4573 | return handle_barrier_request(ofconn, oh); |
064af421 | 4574 | |
6ea4776b JR |
4575 | case OFPTYPE_ROLE_REQUEST: |
4576 | return handle_role_request(ofconn, oh); | |
4577 | ||
d1e2cf21 | 4578 | /* OpenFlow replies. */ |
982697a4 | 4579 | case OFPTYPE_ECHO_REPLY: |
d1e2cf21 | 4580 | return 0; |
246e61ea | 4581 | |
d1e2cf21 | 4582 | /* Nicira extension requests. */ |
982697a4 | 4583 | case OFPTYPE_FLOW_MOD_TABLE_ID: |
6c1491fb | 4584 | return handle_nxt_flow_mod_table_id(ofconn, oh); |
d1e2cf21 | 4585 | |
982697a4 | 4586 | case OFPTYPE_SET_FLOW_FORMAT: |
d1e2cf21 BP |
4587 | return handle_nxt_set_flow_format(ofconn, oh); |
4588 | ||
982697a4 | 4589 | case OFPTYPE_SET_PACKET_IN_FORMAT: |
54834960 EJ |
4590 | return handle_nxt_set_packet_in_format(ofconn, oh); |
4591 | ||
982697a4 | 4592 | case OFPTYPE_SET_CONTROLLER_ID: |
a7349929 BP |
4593 | return handle_nxt_set_controller_id(ofconn, oh); |
4594 | ||
982697a4 | 4595 | case OFPTYPE_FLOW_AGE: |
f27f2134 BP |
4596 | /* Nothing to do. */ |
4597 | return 0; | |
4598 | ||
982697a4 | 4599 | case OFPTYPE_FLOW_MONITOR_CANCEL: |
2b07c8b1 BP |
4600 | return handle_flow_monitor_cancel(ofconn, oh); |
4601 | ||
982697a4 | 4602 | case OFPTYPE_SET_ASYNC_CONFIG: |
80d5aefd BP |
4603 | return handle_nxt_set_async_config(ofconn, oh); |
4604 | ||
349adfb2 | 4605 | /* Statistics requests. */ |
982697a4 BP |
4606 | case OFPTYPE_DESC_STATS_REQUEST: |
4607 | return handle_desc_stats_request(ofconn, oh); | |
4608 | ||
4609 | case OFPTYPE_FLOW_STATS_REQUEST: | |
4610 | return handle_flow_stats_request(ofconn, oh); | |
4611 | ||
4612 | case OFPTYPE_AGGREGATE_STATS_REQUEST: | |
4613 | return handle_aggregate_stats_request(ofconn, oh); | |
4614 | ||
4615 | case OFPTYPE_TABLE_STATS_REQUEST: | |
4616 | return handle_table_stats_request(ofconn, oh); | |
4617 | ||
4618 | case OFPTYPE_PORT_STATS_REQUEST: | |
4619 | return handle_port_stats_request(ofconn, oh); | |
4620 | ||
4621 | case OFPTYPE_QUEUE_STATS_REQUEST: | |
4622 | return handle_queue_stats_request(ofconn, oh); | |
4623 | ||
4624 | case OFPTYPE_PORT_DESC_STATS_REQUEST: | |
4625 | return handle_port_desc_stats_request(ofconn, oh); | |
4626 | ||
4627 | case OFPTYPE_FLOW_MONITOR_STATS_REQUEST: | |
4628 | return handle_flow_monitor_request(ofconn, oh); | |
4629 | ||
261bd854 BP |
4630 | case OFPTYPE_METER_STATS_REQUEST: |
4631 | case OFPTYPE_METER_CONFIG_STATS_REQUEST: | |
9cae45dc JR |
4632 | return handle_meter_request(ofconn, oh, type); |
4633 | ||
261bd854 | 4634 | case OFPTYPE_METER_FEATURES_STATS_REQUEST: |
9cae45dc JR |
4635 | return handle_meter_features_request(ofconn, oh); |
4636 | ||
2e1ae200 | 4637 | /* FIXME: Change the following once they are implemented: */ |
c545d38d | 4638 | case OFPTYPE_QUEUE_GET_CONFIG_REQUEST: |
2e1ae200 | 4639 | case OFPTYPE_GET_ASYNC_REQUEST: |
261bd854 BP |
4640 | case OFPTYPE_GROUP_STATS_REQUEST: |
4641 | case OFPTYPE_GROUP_DESC_STATS_REQUEST: | |
4642 | case OFPTYPE_GROUP_FEATURES_STATS_REQUEST: | |
4643 | case OFPTYPE_TABLE_FEATURES_STATS_REQUEST: | |
2e1ae200 JR |
4644 | return OFPERR_OFPBRC_BAD_TYPE; |
4645 | ||
982697a4 BP |
4646 | case OFPTYPE_HELLO: |
4647 | case OFPTYPE_ERROR: | |
4648 | case OFPTYPE_FEATURES_REPLY: | |
4649 | case OFPTYPE_GET_CONFIG_REPLY: | |
4650 | case OFPTYPE_PACKET_IN: | |
4651 | case OFPTYPE_FLOW_REMOVED: | |
4652 | case OFPTYPE_PORT_STATUS: | |
4653 | case OFPTYPE_BARRIER_REPLY: | |
c545d38d | 4654 | case OFPTYPE_QUEUE_GET_CONFIG_REPLY: |
982697a4 BP |
4655 | case OFPTYPE_DESC_STATS_REPLY: |
4656 | case OFPTYPE_FLOW_STATS_REPLY: | |
4657 | case OFPTYPE_QUEUE_STATS_REPLY: | |
4658 | case OFPTYPE_PORT_STATS_REPLY: | |
4659 | case OFPTYPE_TABLE_STATS_REPLY: | |
4660 | case OFPTYPE_AGGREGATE_STATS_REPLY: | |
4661 | case OFPTYPE_PORT_DESC_STATS_REPLY: | |
4662 | case OFPTYPE_ROLE_REPLY: | |
4663 | case OFPTYPE_FLOW_MONITOR_PAUSED: | |
4664 | case OFPTYPE_FLOW_MONITOR_RESUMED: | |
4665 | case OFPTYPE_FLOW_MONITOR_STATS_REPLY: | |
2e1ae200 | 4666 | case OFPTYPE_GET_ASYNC_REPLY: |
261bd854 BP |
4667 | case OFPTYPE_GROUP_STATS_REPLY: |
4668 | case OFPTYPE_GROUP_DESC_STATS_REPLY: | |
4669 | case OFPTYPE_GROUP_FEATURES_STATS_REPLY: | |
4670 | case OFPTYPE_METER_STATS_REPLY: | |
4671 | case OFPTYPE_METER_CONFIG_STATS_REPLY: | |
4672 | case OFPTYPE_METER_FEATURES_STATS_REPLY: | |
4673 | case OFPTYPE_TABLE_FEATURES_STATS_REPLY: | |
064af421 | 4674 | default: |
982697a4 | 4675 | return OFPERR_OFPBRC_BAD_TYPE; |
064af421 | 4676 | } |
d1e2cf21 | 4677 | } |
064af421 | 4678 | |
7ee20df1 | 4679 | static bool |
e03248b7 | 4680 | handle_openflow(struct ofconn *ofconn, const struct ofpbuf *ofp_msg) |
d1e2cf21 BP |
4681 | { |
4682 | int error = handle_openflow__(ofconn, ofp_msg); | |
7ee20df1 | 4683 | if (error && error != OFPROTO_POSTPONE) { |
1be5ff75 | 4684 | ofconn_send_error(ofconn, ofp_msg->data, error); |
064af421 | 4685 | } |
d1e2cf21 | 4686 | COVERAGE_INC(ofproto_recv_openflow); |
7ee20df1 BP |
4687 | return error != OFPROTO_POSTPONE; |
4688 | } | |
4689 | \f | |
4690 | /* Asynchronous operations. */ | |
4691 | ||
4692 | /* Creates and returns a new ofopgroup that is not associated with any | |
4693 | * OpenFlow connection. | |
4694 | * | |
4695 | * The caller should add operations to the returned group with | |
4696 | * ofoperation_create() and then submit it with ofopgroup_submit(). */ | |
4697 | static struct ofopgroup * | |
7024dffe | 4698 | ofopgroup_create_unattached(struct ofproto *ofproto) |
7ee20df1 BP |
4699 | { |
4700 | struct ofopgroup *group = xzalloc(sizeof *group); | |
4701 | group->ofproto = ofproto; | |
4702 | list_init(&group->ofproto_node); | |
4703 | list_init(&group->ops); | |
4704 | list_init(&group->ofconn_node); | |
4705 | return group; | |
4706 | } | |
4707 | ||
7024dffe BP |
4708 | /* Creates and returns a new ofopgroup for 'ofproto'. |
4709 | * | |
4710 | * If 'ofconn' is NULL, the new ofopgroup is not associated with any OpenFlow | |
4711 | * connection. The 'request' and 'buffer_id' arguments are ignored. | |
4712 | * | |
4713 | * If 'ofconn' is nonnull, then the new ofopgroup is associated with 'ofconn'. | |
4714 | * If the ofopgroup eventually fails, then the error reply will include | |
4715 | * 'request'. If the ofopgroup eventually succeeds, then the packet with | |
4716 | * buffer id 'buffer_id' on 'ofconn' will be sent by 'ofconn''s ofproto. | |
7ee20df1 BP |
4717 | * |
4718 | * The caller should add operations to the returned group with | |
4719 | * ofoperation_create() and then submit it with ofopgroup_submit(). */ | |
4720 | static struct ofopgroup * | |
7024dffe BP |
4721 | ofopgroup_create(struct ofproto *ofproto, struct ofconn *ofconn, |
4722 | const struct ofp_header *request, uint32_t buffer_id) | |
7ee20df1 | 4723 | { |
7024dffe BP |
4724 | struct ofopgroup *group = ofopgroup_create_unattached(ofproto); |
4725 | if (ofconn) { | |
4726 | size_t request_len = ntohs(request->length); | |
7ee20df1 | 4727 | |
cb22974d | 4728 | ovs_assert(ofconn_get_ofproto(ofconn) == ofproto); |
7ee20df1 | 4729 | |
7024dffe BP |
4730 | ofconn_add_opgroup(ofconn, &group->ofconn_node); |
4731 | group->ofconn = ofconn; | |
4732 | group->request = xmemdup(request, MIN(request_len, 64)); | |
4733 | group->buffer_id = buffer_id; | |
4734 | } | |
7ee20df1 BP |
4735 | return group; |
4736 | } | |
4737 | ||
4738 | /* Submits 'group' for processing. | |
4739 | * | |
4740 | * If 'group' contains no operations (e.g. none were ever added, or all of the | |
4741 | * ones that were added completed synchronously), then it is destroyed | |
4742 | * immediately. Otherwise it is added to the ofproto's list of pending | |
4743 | * groups. */ | |
4744 | static void | |
4745 | ofopgroup_submit(struct ofopgroup *group) | |
4746 | { | |
e615b0a3 BP |
4747 | if (!group->n_running) { |
4748 | ofopgroup_complete(group); | |
7ee20df1 BP |
4749 | } else { |
4750 | list_push_back(&group->ofproto->pending, &group->ofproto_node); | |
dd5616b3 | 4751 | group->ofproto->n_pending++; |
7ee20df1 BP |
4752 | } |
4753 | } | |
4754 | ||
4755 | static void | |
e615b0a3 | 4756 | ofopgroup_complete(struct ofopgroup *group) |
7ee20df1 | 4757 | { |
e615b0a3 | 4758 | struct ofproto *ofproto = group->ofproto; |
2b07c8b1 BP |
4759 | |
4760 | struct ofconn *abbrev_ofconn; | |
4761 | ovs_be32 abbrev_xid; | |
4762 | ||
e615b0a3 BP |
4763 | struct ofoperation *op, *next_op; |
4764 | int error; | |
4765 | ||
cb22974d | 4766 | ovs_assert(!group->n_running); |
e615b0a3 BP |
4767 | |
4768 | error = 0; | |
4769 | LIST_FOR_EACH (op, group_node, &group->ops) { | |
4770 | if (op->error) { | |
4771 | error = op->error; | |
4772 | break; | |
4773 | } | |
4774 | } | |
4775 | ||
4776 | if (!error && group->ofconn && group->buffer_id != UINT32_MAX) { | |
4777 | LIST_FOR_EACH (op, group_node, &group->ops) { | |
4778 | if (op->type != OFOPERATION_DELETE) { | |
4779 | struct ofpbuf *packet; | |
4e022ec0 | 4780 | ofp_port_t in_port; |
e615b0a3 BP |
4781 | |
4782 | error = ofconn_pktbuf_retrieve(group->ofconn, group->buffer_id, | |
4783 | &packet, &in_port); | |
4784 | if (packet) { | |
cb22974d | 4785 | ovs_assert(!error); |
e615b0a3 BP |
4786 | error = rule_execute(op->rule, in_port, packet); |
4787 | } | |
4788 | break; | |
4789 | } | |
4790 | } | |
4791 | } | |
4792 | ||
2b07c8b1 BP |
4793 | if (!error && !list_is_empty(&group->ofconn_node)) { |
4794 | abbrev_ofconn = group->ofconn; | |
4795 | abbrev_xid = group->request->xid; | |
4796 | } else { | |
4797 | abbrev_ofconn = NULL; | |
4798 | abbrev_xid = htonl(0); | |
4799 | } | |
e615b0a3 BP |
4800 | LIST_FOR_EACH_SAFE (op, next_op, group_node, &group->ops) { |
4801 | struct rule *rule = op->rule; | |
2b07c8b1 | 4802 | |
644e2a7c BP |
4803 | /* We generally want to report the change to active OpenFlow flow |
4804 | monitors (e.g. NXST_FLOW_MONITOR). There are three exceptions: | |
4805 | ||
4806 | - The operation failed. | |
4807 | ||
4808 | - The affected rule is not visible to controllers. | |
4809 | ||
4810 | - The operation's only effect was to update rule->modified. */ | |
4811 | if (!(op->error | |
4812 | || ofproto_rule_is_hidden(rule) | |
4813 | || (op->type == OFOPERATION_MODIFY | |
4814 | && op->ofpacts | |
4815 | && rule->flow_cookie == op->flow_cookie))) { | |
2b07c8b1 BP |
4816 | /* Check that we can just cast from ofoperation_type to |
4817 | * nx_flow_update_event. */ | |
1ec3db6f EJ |
4818 | BUILD_ASSERT_DECL((enum nx_flow_update_event) OFOPERATION_ADD |
4819 | == NXFME_ADDED); | |
4820 | BUILD_ASSERT_DECL((enum nx_flow_update_event) OFOPERATION_DELETE | |
4821 | == NXFME_DELETED); | |
4822 | BUILD_ASSERT_DECL((enum nx_flow_update_event) OFOPERATION_MODIFY | |
4823 | == NXFME_MODIFIED); | |
2b07c8b1 BP |
4824 | |
4825 | ofmonitor_report(ofproto->connmgr, rule, | |
4826 | (enum nx_flow_update_event) op->type, | |
4827 | op->reason, abbrev_ofconn, abbrev_xid); | |
4828 | } | |
4829 | ||
e615b0a3 BP |
4830 | rule->pending = NULL; |
4831 | ||
4832 | switch (op->type) { | |
4833 | case OFOPERATION_ADD: | |
4834 | if (!op->error) { | |
5cb7a798 BP |
4835 | uint16_t vid_mask; |
4836 | ||
e615b0a3 | 4837 | ofproto_rule_destroy__(op->victim); |
5cb7a798 BP |
4838 | vid_mask = minimask_get_vid_mask(&rule->cr.match.mask); |
4839 | if (vid_mask == VLAN_VID_MASK) { | |
e615b0a3 | 4840 | if (ofproto->vlan_bitmap) { |
5cb7a798 | 4841 | uint16_t vid = miniflow_get_vid(&rule->cr.match.flow); |
e615b0a3 BP |
4842 | if (!bitmap_is_set(ofproto->vlan_bitmap, vid)) { |
4843 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
4844 | ofproto->vlans_changed = true; | |
4845 | } | |
4846 | } else { | |
4847 | ofproto->vlans_changed = true; | |
4848 | } | |
4849 | } | |
4850 | } else { | |
4851 | oftable_substitute_rule(rule, op->victim); | |
4852 | ofproto_rule_destroy__(rule); | |
4853 | } | |
4854 | break; | |
4855 | ||
4856 | case OFOPERATION_DELETE: | |
cb22974d | 4857 | ovs_assert(!op->error); |
e615b0a3 BP |
4858 | ofproto_rule_destroy__(rule); |
4859 | op->rule = NULL; | |
4860 | break; | |
4861 | ||
4862 | case OFOPERATION_MODIFY: | |
4863 | if (!op->error) { | |
4864 | rule->modified = time_msec(); | |
4865 | } else { | |
98eaac36 | 4866 | ofproto_rule_change_cookie(ofproto, rule, op->flow_cookie); |
08043761 BP |
4867 | if (op->ofpacts) { |
4868 | free(rule->ofpacts); | |
4869 | rule->ofpacts = op->ofpacts; | |
4870 | rule->ofpacts_len = op->ofpacts_len; | |
4871 | op->ofpacts = NULL; | |
4872 | op->ofpacts_len = 0; | |
4873 | } | |
e615b0a3 BP |
4874 | } |
4875 | break; | |
4876 | ||
4877 | default: | |
4878 | NOT_REACHED(); | |
4879 | } | |
4880 | ||
4881 | ofoperation_destroy(op); | |
4882 | } | |
4883 | ||
2b07c8b1 BP |
4884 | ofmonitor_flush(ofproto->connmgr); |
4885 | ||
7ee20df1 | 4886 | if (!list_is_empty(&group->ofproto_node)) { |
cb22974d | 4887 | ovs_assert(ofproto->n_pending > 0); |
e615b0a3 | 4888 | ofproto->n_pending--; |
7ee20df1 BP |
4889 | list_remove(&group->ofproto_node); |
4890 | } | |
4891 | if (!list_is_empty(&group->ofconn_node)) { | |
4892 | list_remove(&group->ofconn_node); | |
e615b0a3 BP |
4893 | if (error) { |
4894 | ofconn_send_error(group->ofconn, group->request, error); | |
7ee20df1 | 4895 | } |
e615b0a3 | 4896 | connmgr_retry(ofproto->connmgr); |
7ee20df1 BP |
4897 | } |
4898 | free(group->request); | |
4899 | free(group); | |
4900 | } | |
4901 | ||
4902 | /* Initiates a new operation on 'rule', of the specified 'type', within | |
a7d94793 BP |
4903 | * 'group'. Prior to calling, 'rule' must not have any pending operation. |
4904 | * | |
2b07c8b1 BP |
4905 | * For a 'type' of OFOPERATION_DELETE, 'reason' should specify the reason that |
4906 | * the flow is being deleted. For other 'type's, 'reason' is ignored (use 0). | |
4907 | * | |
a7d94793 BP |
4908 | * Returns the newly created ofoperation (which is also available as |
4909 | * rule->pending). */ | |
4910 | static struct ofoperation * | |
7ee20df1 | 4911 | ofoperation_create(struct ofopgroup *group, struct rule *rule, |
2b07c8b1 BP |
4912 | enum ofoperation_type type, |
4913 | enum ofp_flow_removed_reason reason) | |
7ee20df1 | 4914 | { |
a5b8d268 | 4915 | struct ofproto *ofproto = group->ofproto; |
7ee20df1 BP |
4916 | struct ofoperation *op; |
4917 | ||
cb22974d | 4918 | ovs_assert(!rule->pending); |
7ee20df1 BP |
4919 | |
4920 | op = rule->pending = xzalloc(sizeof *op); | |
4921 | op->group = group; | |
4922 | list_push_back(&group->ops, &op->group_node); | |
4923 | op->rule = rule; | |
4924 | op->type = type; | |
2b07c8b1 | 4925 | op->reason = reason; |
7ee20df1 BP |
4926 | op->flow_cookie = rule->flow_cookie; |
4927 | ||
e615b0a3 BP |
4928 | group->n_running++; |
4929 | ||
7ee20df1 | 4930 | if (type == OFOPERATION_DELETE) { |
a5b8d268 | 4931 | hmap_insert(&ofproto->deletions, &op->hmap_node, |
7ee20df1 BP |
4932 | cls_rule_hash(&rule->cr, rule->table_id)); |
4933 | } | |
a7d94793 BP |
4934 | |
4935 | return op; | |
7ee20df1 BP |
4936 | } |
4937 | ||
4938 | static void | |
4939 | ofoperation_destroy(struct ofoperation *op) | |
4940 | { | |
4941 | struct ofopgroup *group = op->group; | |
4942 | ||
4943 | if (op->rule) { | |
4944 | op->rule->pending = NULL; | |
4945 | } | |
4946 | if (op->type == OFOPERATION_DELETE) { | |
4947 | hmap_remove(&group->ofproto->deletions, &op->hmap_node); | |
4948 | } | |
4949 | list_remove(&op->group_node); | |
f25d0cf3 | 4950 | free(op->ofpacts); |
7ee20df1 | 4951 | free(op); |
7ee20df1 BP |
4952 | } |
4953 | ||
4954 | /* Indicates that 'op' completed with status 'error', which is either 0 to | |
90bf1e07 | 4955 | * indicate success or an OpenFlow error code on failure. |
7ee20df1 | 4956 | * |
a6a62132 BP |
4957 | * If 'error' is 0, indicating success, the operation will be committed |
4958 | * permanently to the flow table. There is one interesting subcase: | |
4959 | * | |
4960 | * - If 'op' is an "add flow" operation that is replacing an existing rule in | |
4961 | * the flow table (the "victim" rule) by a new one, then the caller must | |
4962 | * have uninitialized any derived state in the victim rule, as in step 5 in | |
4963 | * the "Life Cycle" in ofproto/ofproto-provider.h. ofoperation_complete() | |
4964 | * performs steps 6 and 7 for the victim rule, most notably by calling its | |
4965 | * ->rule_dealloc() function. | |
4966 | * | |
4967 | * If 'error' is nonzero, then generally the operation will be rolled back: | |
4968 | * | |
4969 | * - If 'op' is an "add flow" operation, ofproto removes the new rule or | |
4970 | * restores the original rule. The caller must have uninitialized any | |
4971 | * derived state in the new rule, as in step 5 of in the "Life Cycle" in | |
4972 | * ofproto/ofproto-provider.h. ofoperation_complete() performs steps 6 and | |
4973 | * and 7 for the new rule, calling its ->rule_dealloc() function. | |
4974 | * | |
4975 | * - If 'op' is a "modify flow" operation, ofproto restores the original | |
4976 | * actions. | |
4977 | * | |
4978 | * - 'op' must not be a "delete flow" operation. Removing a rule is not | |
4979 | * allowed to fail. It must always succeed. | |
7ee20df1 | 4980 | * |
5bee6e26 JP |
4981 | * Please see the large comment in ofproto/ofproto-provider.h titled |
4982 | * "Asynchronous Operation Support" for more information. */ | |
7ee20df1 | 4983 | void |
90bf1e07 | 4984 | ofoperation_complete(struct ofoperation *op, enum ofperr error) |
7ee20df1 BP |
4985 | { |
4986 | struct ofopgroup *group = op->group; | |
7ee20df1 | 4987 | |
cb22974d BP |
4988 | ovs_assert(op->rule->pending == op); |
4989 | ovs_assert(group->n_running > 0); | |
4990 | ovs_assert(!error || op->type != OFOPERATION_DELETE); | |
9075907c | 4991 | |
e615b0a3 BP |
4992 | op->error = error; |
4993 | if (!--group->n_running && !list_is_empty(&group->ofproto_node)) { | |
4994 | ofopgroup_complete(group); | |
7ee20df1 | 4995 | } |
7ee20df1 BP |
4996 | } |
4997 | ||
4998 | struct rule * | |
4999 | ofoperation_get_victim(struct ofoperation *op) | |
5000 | { | |
cb22974d | 5001 | ovs_assert(op->type == OFOPERATION_ADD); |
7ee20df1 | 5002 | return op->victim; |
064af421 BP |
5003 | } |
5004 | \f | |
064af421 | 5005 | static uint64_t |
fa60c019 | 5006 | pick_datapath_id(const struct ofproto *ofproto) |
064af421 | 5007 | { |
fa60c019 | 5008 | const struct ofport *port; |
064af421 | 5009 | |
abe529af | 5010 | port = ofproto_get_port(ofproto, OFPP_LOCAL); |
fa60c019 BP |
5011 | if (port) { |
5012 | uint8_t ea[ETH_ADDR_LEN]; | |
5013 | int error; | |
5014 | ||
5015 | error = netdev_get_etheraddr(port->netdev, ea); | |
064af421 BP |
5016 | if (!error) { |
5017 | return eth_addr_to_uint64(ea); | |
5018 | } | |
fbfa2911 BP |
5019 | VLOG_WARN("%s: could not get MAC address for %s (%s)", |
5020 | ofproto->name, netdev_get_name(port->netdev), | |
10a89ef0 | 5021 | ovs_strerror(error)); |
064af421 | 5022 | } |
fa60c019 | 5023 | return ofproto->fallback_dpid; |
064af421 BP |
5024 | } |
5025 | ||
5026 | static uint64_t | |
5027 | pick_fallback_dpid(void) | |
5028 | { | |
5029 | uint8_t ea[ETH_ADDR_LEN]; | |
70150daf | 5030 | eth_addr_nicira_random(ea); |
064af421 BP |
5031 | return eth_addr_to_uint64(ea); |
5032 | } | |
5033 | \f | |
254750ce BP |
5034 | /* Table overflow policy. */ |
5035 | ||
5036 | /* Chooses and returns a rule to evict from 'table'. Returns NULL if the table | |
5037 | * is not configured to evict rules or if the table contains no evictable | |
5038 | * rules. (Rules with 'evictable' set to false or with no timeouts are not | |
5039 | * evictable.) */ | |
5040 | static struct rule * | |
5041 | choose_rule_to_evict(struct oftable *table) | |
5042 | { | |
5043 | struct eviction_group *evg; | |
5044 | ||
5045 | if (!table->eviction_fields) { | |
5046 | return NULL; | |
5047 | } | |
5048 | ||
5049 | /* In the common case, the outer and inner loops here will each be entered | |
5050 | * exactly once: | |
5051 | * | |
5052 | * - The inner loop normally "return"s in its first iteration. If the | |
5053 | * eviction group has any evictable rules, then it always returns in | |
5054 | * some iteration. | |
5055 | * | |
5056 | * - The outer loop only iterates more than once if the largest eviction | |
5057 | * group has no evictable rules. | |
5058 | * | |
5059 | * - The outer loop can exit only if table's 'max_flows' is all filled up | |
5060 | * by unevictable rules'. */ | |
5061 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { | |
5062 | struct rule *rule; | |
5063 | ||
5064 | HEAP_FOR_EACH (rule, evg_node, &evg->rules) { | |
5065 | if (rule->evictable) { | |
5066 | return rule; | |
5067 | } | |
5068 | } | |
5069 | } | |
5070 | ||
5071 | return NULL; | |
5072 | } | |
5073 | ||
5074 | /* Searches 'ofproto' for tables that have more flows than their configured | |
5075 | * maximum and that have flow eviction enabled, and evicts as many flows as | |
5076 | * necessary and currently feasible from them. | |
5077 | * | |
5078 | * This triggers only when an OpenFlow table has N flows in it and then the | |
5079 | * client configures a maximum number of flows less than N. */ | |
5080 | static void | |
5081 | ofproto_evict(struct ofproto *ofproto) | |
5082 | { | |
5083 | struct ofopgroup *group; | |
5084 | struct oftable *table; | |
5085 | ||
5086 | group = ofopgroup_create_unattached(ofproto); | |
5087 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
5088 | while (classifier_count(&table->cls) > table->max_flows | |
5089 | && table->eviction_fields) { | |
5090 | struct rule *rule; | |
5091 | ||
5092 | rule = choose_rule_to_evict(table); | |
5093 | if (!rule || rule->pending) { | |
5094 | break; | |
5095 | } | |
5096 | ||
2b07c8b1 BP |
5097 | ofoperation_create(group, rule, |
5098 | OFOPERATION_DELETE, OFPRR_EVICTION); | |
254750ce BP |
5099 | oftable_remove_rule(rule); |
5100 | ofproto->ofproto_class->rule_destruct(rule); | |
5101 | } | |
5102 | } | |
5103 | ofopgroup_submit(group); | |
5104 | } | |
5105 | \f | |
5106 | /* Eviction groups. */ | |
5107 | ||
5108 | /* Returns the priority to use for an eviction_group that contains 'n_rules' | |
5109 | * rules. The priority contains low-order random bits to ensure that eviction | |
5110 | * groups with the same number of rules are prioritized randomly. */ | |
5111 | static uint32_t | |
5112 | eviction_group_priority(size_t n_rules) | |
5113 | { | |
5114 | uint16_t size = MIN(UINT16_MAX, n_rules); | |
5115 | return (size << 16) | random_uint16(); | |
5116 | } | |
5117 | ||
5118 | /* Updates 'evg', an eviction_group within 'table', following a change that | |
5119 | * adds or removes rules in 'evg'. */ | |
5120 | static void | |
5121 | eviction_group_resized(struct oftable *table, struct eviction_group *evg) | |
5122 | { | |
5123 | heap_change(&table->eviction_groups_by_size, &evg->size_node, | |
5124 | eviction_group_priority(heap_count(&evg->rules))); | |
5125 | } | |
5126 | ||
5127 | /* Destroys 'evg', an eviction_group within 'table': | |
5128 | * | |
5129 | * - Removes all the rules, if any, from 'evg'. (It doesn't destroy the | |
5130 | * rules themselves, just removes them from the eviction group.) | |
5131 | * | |
5132 | * - Removes 'evg' from 'table'. | |
5133 | * | |
5134 | * - Frees 'evg'. */ | |
5135 | static void | |
5136 | eviction_group_destroy(struct oftable *table, struct eviction_group *evg) | |
5137 | { | |
5138 | while (!heap_is_empty(&evg->rules)) { | |
5139 | struct rule *rule; | |
5140 | ||
5141 | rule = CONTAINER_OF(heap_pop(&evg->rules), struct rule, evg_node); | |
5142 | rule->eviction_group = NULL; | |
5143 | } | |
5144 | hmap_remove(&table->eviction_groups_by_id, &evg->id_node); | |
5145 | heap_remove(&table->eviction_groups_by_size, &evg->size_node); | |
5146 | heap_destroy(&evg->rules); | |
5147 | free(evg); | |
5148 | } | |
5149 | ||
5150 | /* Removes 'rule' from its eviction group, if any. */ | |
5151 | static void | |
5152 | eviction_group_remove_rule(struct rule *rule) | |
5153 | { | |
5154 | if (rule->eviction_group) { | |
5155 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
5156 | struct eviction_group *evg = rule->eviction_group; | |
5157 | ||
5158 | rule->eviction_group = NULL; | |
5159 | heap_remove(&evg->rules, &rule->evg_node); | |
5160 | if (heap_is_empty(&evg->rules)) { | |
5161 | eviction_group_destroy(table, evg); | |
5162 | } else { | |
5163 | eviction_group_resized(table, evg); | |
5164 | } | |
5165 | } | |
5166 | } | |
5167 | ||
5168 | /* Hashes the 'rule''s values for the eviction_fields of 'rule''s table, and | |
5169 | * returns the hash value. */ | |
5170 | static uint32_t | |
5171 | eviction_group_hash_rule(struct rule *rule) | |
5172 | { | |
5173 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
5174 | const struct mf_subfield *sf; | |
5cb7a798 | 5175 | struct flow flow; |
254750ce BP |
5176 | uint32_t hash; |
5177 | ||
5178 | hash = table->eviction_group_id_basis; | |
5cb7a798 | 5179 | miniflow_expand(&rule->cr.match.flow, &flow); |
254750ce BP |
5180 | for (sf = table->eviction_fields; |
5181 | sf < &table->eviction_fields[table->n_eviction_fields]; | |
5182 | sf++) | |
5183 | { | |
5cb7a798 | 5184 | if (mf_are_prereqs_ok(sf->field, &flow)) { |
254750ce BP |
5185 | union mf_value value; |
5186 | ||
5cb7a798 | 5187 | mf_get_value(sf->field, &flow, &value); |
254750ce BP |
5188 | if (sf->ofs) { |
5189 | bitwise_zero(&value, sf->field->n_bytes, 0, sf->ofs); | |
5190 | } | |
5191 | if (sf->ofs + sf->n_bits < sf->field->n_bytes * 8) { | |
5192 | unsigned int start = sf->ofs + sf->n_bits; | |
5193 | bitwise_zero(&value, sf->field->n_bytes, start, | |
5194 | sf->field->n_bytes * 8 - start); | |
5195 | } | |
5196 | hash = hash_bytes(&value, sf->field->n_bytes, hash); | |
5197 | } else { | |
5198 | hash = hash_int(hash, 0); | |
5199 | } | |
5200 | } | |
5201 | ||
5202 | return hash; | |
5203 | } | |
5204 | ||
5205 | /* Returns an eviction group within 'table' with the given 'id', creating one | |
5206 | * if necessary. */ | |
5207 | static struct eviction_group * | |
5208 | eviction_group_find(struct oftable *table, uint32_t id) | |
5209 | { | |
5210 | struct eviction_group *evg; | |
5211 | ||
5212 | HMAP_FOR_EACH_WITH_HASH (evg, id_node, id, &table->eviction_groups_by_id) { | |
5213 | return evg; | |
5214 | } | |
5215 | ||
5216 | evg = xmalloc(sizeof *evg); | |
5217 | hmap_insert(&table->eviction_groups_by_id, &evg->id_node, id); | |
5218 | heap_insert(&table->eviction_groups_by_size, &evg->size_node, | |
5219 | eviction_group_priority(0)); | |
5220 | heap_init(&evg->rules); | |
5221 | ||
5222 | return evg; | |
5223 | } | |
5224 | ||
5225 | /* Returns an eviction priority for 'rule'. The return value should be | |
5226 | * interpreted so that higher priorities make a rule more attractive candidates | |
5227 | * for eviction. */ | |
5228 | static uint32_t | |
5229 | rule_eviction_priority(struct rule *rule) | |
5230 | { | |
5231 | long long int hard_expiration; | |
5232 | long long int idle_expiration; | |
5233 | long long int expiration; | |
5234 | uint32_t expiration_offset; | |
5235 | ||
5236 | /* Calculate time of expiration. */ | |
a3779dbc | 5237 | ovs_mutex_lock(&rule->timeout_mutex); |
254750ce BP |
5238 | hard_expiration = (rule->hard_timeout |
5239 | ? rule->modified + rule->hard_timeout * 1000 | |
5240 | : LLONG_MAX); | |
5241 | idle_expiration = (rule->idle_timeout | |
5242 | ? rule->used + rule->idle_timeout * 1000 | |
5243 | : LLONG_MAX); | |
5244 | expiration = MIN(hard_expiration, idle_expiration); | |
a3779dbc | 5245 | ovs_mutex_unlock(&rule->timeout_mutex); |
254750ce BP |
5246 | if (expiration == LLONG_MAX) { |
5247 | return 0; | |
5248 | } | |
5249 | ||
5250 | /* Calculate the time of expiration as a number of (approximate) seconds | |
5251 | * after program startup. | |
5252 | * | |
5253 | * This should work OK for program runs that last UINT32_MAX seconds or | |
5254 | * less. Therefore, please restart OVS at least once every 136 years. */ | |
5255 | expiration_offset = (expiration >> 10) - (time_boot_msec() >> 10); | |
5256 | ||
5257 | /* Invert the expiration offset because we're using a max-heap. */ | |
5258 | return UINT32_MAX - expiration_offset; | |
5259 | } | |
5260 | ||
5261 | /* Adds 'rule' to an appropriate eviction group for its oftable's | |
5262 | * configuration. Does nothing if 'rule''s oftable doesn't have eviction | |
5263 | * enabled, or if 'rule' is a permanent rule (one that will never expire on its | |
5264 | * own). | |
5265 | * | |
5266 | * The caller must ensure that 'rule' is not already in an eviction group. */ | |
5267 | static void | |
5268 | eviction_group_add_rule(struct rule *rule) | |
5269 | { | |
5270 | struct ofproto *ofproto = rule->ofproto; | |
5271 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
a3779dbc | 5272 | bool has_timeout; |
254750ce | 5273 | |
a3779dbc EJ |
5274 | ovs_mutex_lock(&rule->timeout_mutex); |
5275 | has_timeout = rule->hard_timeout || rule->idle_timeout; | |
5276 | ovs_mutex_unlock(&rule->timeout_mutex); | |
5277 | ||
5278 | if (table->eviction_fields && has_timeout) { | |
254750ce BP |
5279 | struct eviction_group *evg; |
5280 | ||
5281 | evg = eviction_group_find(table, eviction_group_hash_rule(rule)); | |
5282 | ||
5283 | rule->eviction_group = evg; | |
5284 | heap_insert(&evg->rules, &rule->evg_node, | |
5285 | rule_eviction_priority(rule)); | |
5286 | eviction_group_resized(table, evg); | |
5287 | } | |
5288 | } | |
5289 | \f | |
d0918789 BP |
5290 | /* oftables. */ |
5291 | ||
5292 | /* Initializes 'table'. */ | |
5293 | static void | |
5294 | oftable_init(struct oftable *table) | |
5295 | { | |
5c67e4af | 5296 | memset(table, 0, sizeof *table); |
d0918789 | 5297 | classifier_init(&table->cls); |
ec1c5c7e | 5298 | table->max_flows = UINT_MAX; |
d0918789 BP |
5299 | } |
5300 | ||
254750ce | 5301 | /* Destroys 'table', including its classifier and eviction groups. |
d0918789 BP |
5302 | * |
5303 | * The caller is responsible for freeing 'table' itself. */ | |
5304 | static void | |
5305 | oftable_destroy(struct oftable *table) | |
5306 | { | |
cb22974d | 5307 | ovs_assert(classifier_is_empty(&table->cls)); |
254750ce | 5308 | oftable_disable_eviction(table); |
d0918789 | 5309 | classifier_destroy(&table->cls); |
254750ce BP |
5310 | free(table->name); |
5311 | } | |
5312 | ||
5313 | /* Changes the name of 'table' to 'name'. If 'name' is NULL or the empty | |
5314 | * string, then 'table' will use its default name. | |
5315 | * | |
5316 | * This only affects the name exposed for a table exposed through the OpenFlow | |
5317 | * OFPST_TABLE (as printed by "ovs-ofctl dump-tables"). */ | |
5318 | static void | |
5319 | oftable_set_name(struct oftable *table, const char *name) | |
5320 | { | |
5321 | if (name && name[0]) { | |
5322 | int len = strnlen(name, OFP_MAX_TABLE_NAME_LEN); | |
5323 | if (!table->name || strncmp(name, table->name, len)) { | |
5324 | free(table->name); | |
5325 | table->name = xmemdup0(name, len); | |
5326 | } | |
5327 | } else { | |
5328 | free(table->name); | |
5329 | table->name = NULL; | |
5330 | } | |
5331 | } | |
5332 | ||
5333 | /* oftables support a choice of two policies when adding a rule would cause the | |
5334 | * number of flows in the table to exceed the configured maximum number: either | |
5335 | * they can refuse to add the new flow or they can evict some existing flow. | |
5336 | * This function configures the former policy on 'table'. */ | |
5337 | static void | |
5338 | oftable_disable_eviction(struct oftable *table) | |
5339 | { | |
5340 | if (table->eviction_fields) { | |
5341 | struct eviction_group *evg, *next; | |
5342 | ||
5343 | HMAP_FOR_EACH_SAFE (evg, next, id_node, | |
5344 | &table->eviction_groups_by_id) { | |
5345 | eviction_group_destroy(table, evg); | |
5346 | } | |
5347 | hmap_destroy(&table->eviction_groups_by_id); | |
5348 | heap_destroy(&table->eviction_groups_by_size); | |
5349 | ||
5350 | free(table->eviction_fields); | |
5351 | table->eviction_fields = NULL; | |
5352 | table->n_eviction_fields = 0; | |
5353 | } | |
5354 | } | |
5355 | ||
5356 | /* oftables support a choice of two policies when adding a rule would cause the | |
5357 | * number of flows in the table to exceed the configured maximum number: either | |
5358 | * they can refuse to add the new flow or they can evict some existing flow. | |
5359 | * This function configures the latter policy on 'table', with fairness based | |
5360 | * on the values of the 'n_fields' fields specified in 'fields'. (Specifying | |
5361 | * 'n_fields' as 0 disables fairness.) */ | |
5362 | static void | |
5363 | oftable_enable_eviction(struct oftable *table, | |
5364 | const struct mf_subfield *fields, size_t n_fields) | |
5365 | { | |
5366 | struct cls_cursor cursor; | |
5367 | struct rule *rule; | |
5368 | ||
5369 | if (table->eviction_fields | |
5370 | && n_fields == table->n_eviction_fields | |
5371 | && (!n_fields | |
5372 | || !memcmp(fields, table->eviction_fields, | |
5373 | n_fields * sizeof *fields))) { | |
5374 | /* No change. */ | |
5375 | return; | |
5376 | } | |
5377 | ||
5378 | oftable_disable_eviction(table); | |
5379 | ||
5380 | table->n_eviction_fields = n_fields; | |
5381 | table->eviction_fields = xmemdup(fields, n_fields * sizeof *fields); | |
5382 | ||
5383 | table->eviction_group_id_basis = random_uint32(); | |
5384 | hmap_init(&table->eviction_groups_by_id); | |
5385 | heap_init(&table->eviction_groups_by_size); | |
5386 | ||
5387 | cls_cursor_init(&cursor, &table->cls, NULL); | |
5388 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { | |
5389 | eviction_group_add_rule(rule); | |
5390 | } | |
d0918789 BP |
5391 | } |
5392 | ||
5393 | /* Removes 'rule' from the oftable that contains it. */ | |
5394 | static void | |
5395 | oftable_remove_rule(struct rule *rule) | |
5396 | { | |
5397 | struct ofproto *ofproto = rule->ofproto; | |
5398 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
5399 | ||
5400 | classifier_remove(&table->cls, &rule->cr); | |
9cae45dc JR |
5401 | if (rule->meter_id) { |
5402 | list_remove(&rule->meter_list_node); | |
5403 | } | |
98eaac36 | 5404 | cookies_remove(ofproto, rule); |
254750ce | 5405 | eviction_group_remove_rule(rule); |
83b16b98 | 5406 | ovs_mutex_lock(&ofproto->expirable_mutex); |
e503cc19 SH |
5407 | if (!list_is_empty(&rule->expirable)) { |
5408 | list_remove(&rule->expirable); | |
5409 | } | |
83b16b98 | 5410 | ovs_mutex_unlock(&ofproto->expirable_mutex); |
9cae45dc JR |
5411 | if (!list_is_empty(&rule->meter_list_node)) { |
5412 | list_remove(&rule->meter_list_node); | |
5413 | } | |
d0918789 BP |
5414 | } |
5415 | ||
5416 | /* Inserts 'rule' into its oftable. Removes any existing rule from 'rule''s | |
5417 | * oftable that has an identical cls_rule. Returns the rule that was removed, | |
5418 | * if any, and otherwise NULL. */ | |
5419 | static struct rule * | |
5420 | oftable_replace_rule(struct rule *rule) | |
5421 | { | |
5422 | struct ofproto *ofproto = rule->ofproto; | |
5423 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
254750ce | 5424 | struct rule *victim; |
a3779dbc EJ |
5425 | bool may_expire; |
5426 | ||
5427 | ovs_mutex_lock(&rule->timeout_mutex); | |
5428 | may_expire = rule->hard_timeout || rule->idle_timeout; | |
5429 | ovs_mutex_unlock(&rule->timeout_mutex); | |
e503cc19 SH |
5430 | |
5431 | if (may_expire) { | |
83b16b98 | 5432 | ovs_mutex_lock(&ofproto->expirable_mutex); |
e503cc19 | 5433 | list_insert(&ofproto->expirable, &rule->expirable); |
83b16b98 | 5434 | ovs_mutex_unlock(&ofproto->expirable_mutex); |
e503cc19 | 5435 | } |
98eaac36 | 5436 | cookies_insert(ofproto, rule); |
9cae45dc JR |
5437 | if (rule->meter_id) { |
5438 | struct meter *meter = ofproto->meters[rule->meter_id]; | |
5439 | list_insert(&meter->rules, &rule->meter_list_node); | |
5440 | } | |
254750ce BP |
5441 | victim = rule_from_cls_rule(classifier_replace(&table->cls, &rule->cr)); |
5442 | if (victim) { | |
9cae45dc JR |
5443 | if (victim->meter_id) { |
5444 | list_remove(&victim->meter_list_node); | |
5445 | } | |
98eaac36 JR |
5446 | cookies_remove(ofproto, victim); |
5447 | ||
83b16b98 | 5448 | ovs_mutex_lock(&ofproto->expirable_mutex); |
d6e95e99 BP |
5449 | if (!list_is_empty(&victim->expirable)) { |
5450 | list_remove(&victim->expirable); | |
5451 | } | |
83b16b98 | 5452 | ovs_mutex_unlock(&ofproto->expirable_mutex); |
254750ce BP |
5453 | eviction_group_remove_rule(victim); |
5454 | } | |
5455 | eviction_group_add_rule(rule); | |
5456 | return victim; | |
d0918789 BP |
5457 | } |
5458 | ||
5459 | /* Removes 'old' from its oftable then, if 'new' is nonnull, inserts 'new'. */ | |
5460 | static void | |
5461 | oftable_substitute_rule(struct rule *old, struct rule *new) | |
5462 | { | |
5463 | if (new) { | |
5464 | oftable_replace_rule(new); | |
5465 | } else { | |
5466 | oftable_remove_rule(old); | |
5467 | } | |
5468 | } | |
5469 | \f | |
abe529af | 5470 | /* unixctl commands. */ |
7aa697dd | 5471 | |
abe529af | 5472 | struct ofproto * |
2ac6bedd | 5473 | ofproto_lookup(const char *name) |
7aa697dd | 5474 | { |
2ac6bedd | 5475 | struct ofproto *ofproto; |
7aa697dd | 5476 | |
2ac6bedd BP |
5477 | HMAP_FOR_EACH_WITH_HASH (ofproto, hmap_node, hash_string(name, 0), |
5478 | &all_ofprotos) { | |
5479 | if (!strcmp(ofproto->name, name)) { | |
5480 | return ofproto; | |
5481 | } | |
7aa697dd | 5482 | } |
2ac6bedd | 5483 | return NULL; |
7aa697dd BP |
5484 | } |
5485 | ||
5486 | static void | |
0e15264f BP |
5487 | ofproto_unixctl_list(struct unixctl_conn *conn, int argc OVS_UNUSED, |
5488 | const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED) | |
7aa697dd | 5489 | { |
7aa697dd | 5490 | struct ofproto *ofproto; |
7aa697dd | 5491 | struct ds results; |
7aa697dd | 5492 | |
7aa697dd | 5493 | ds_init(&results); |
2ac6bedd BP |
5494 | HMAP_FOR_EACH (ofproto, hmap_node, &all_ofprotos) { |
5495 | ds_put_format(&results, "%s\n", ofproto->name); | |
7aa697dd | 5496 | } |
bde9f75d | 5497 | unixctl_command_reply(conn, ds_cstr(&results)); |
7aa697dd | 5498 | ds_destroy(&results); |
7aa697dd BP |
5499 | } |
5500 | ||
5501 | static void | |
5502 | ofproto_unixctl_init(void) | |
5503 | { | |
5504 | static bool registered; | |
5505 | if (registered) { | |
5506 | return; | |
5507 | } | |
5508 | registered = true; | |
5509 | ||
0e15264f BP |
5510 | unixctl_command_register("ofproto/list", "", 0, 0, |
5511 | ofproto_unixctl_list, NULL); | |
064af421 | 5512 | } |
52a90c29 BP |
5513 | \f |
5514 | /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.) | |
5515 | * | |
5516 | * This is deprecated. It is only for compatibility with broken device drivers | |
5517 | * in old versions of Linux that do not properly support VLANs when VLAN | |
5518 | * devices are not used. When broken device drivers are no longer in | |
5519 | * widespread use, we will delete these interfaces. */ | |
5520 | ||
5521 | /* Sets a 1-bit in the 4096-bit 'vlan_bitmap' for each VLAN ID that is matched | |
5522 | * (exactly) by an OpenFlow rule in 'ofproto'. */ | |
5523 | void | |
5524 | ofproto_get_vlan_usage(struct ofproto *ofproto, unsigned long int *vlan_bitmap) | |
5525 | { | |
d0918789 | 5526 | const struct oftable *oftable; |
52a90c29 BP |
5527 | |
5528 | free(ofproto->vlan_bitmap); | |
5529 | ofproto->vlan_bitmap = bitmap_allocate(4096); | |
5530 | ofproto->vlans_changed = false; | |
5531 | ||
d0918789 | 5532 | OFPROTO_FOR_EACH_TABLE (oftable, ofproto) { |
52a90c29 BP |
5533 | const struct cls_table *table; |
5534 | ||
d0918789 | 5535 | HMAP_FOR_EACH (table, hmap_node, &oftable->cls.tables) { |
5cb7a798 | 5536 | if (minimask_get_vid_mask(&table->mask) == VLAN_VID_MASK) { |
52a90c29 BP |
5537 | const struct cls_rule *rule; |
5538 | ||
5539 | HMAP_FOR_EACH (rule, hmap_node, &table->rules) { | |
5cb7a798 | 5540 | uint16_t vid = miniflow_get_vid(&rule->match.flow); |
52a90c29 BP |
5541 | bitmap_set1(vlan_bitmap, vid); |
5542 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
5543 | } | |
5544 | } | |
5545 | } | |
5546 | } | |
5547 | } | |
5548 | ||
5549 | /* Returns true if new VLANs have come into use by the flow table since the | |
5550 | * last call to ofproto_get_vlan_usage(). | |
5551 | * | |
5552 | * We don't track when old VLANs stop being used. */ | |
5553 | bool | |
5554 | ofproto_has_vlan_usage_changed(const struct ofproto *ofproto) | |
5555 | { | |
5556 | return ofproto->vlans_changed; | |
5557 | } | |
5558 | ||
5559 | /* Configures a VLAN splinter binding between the ports identified by OpenFlow | |
5560 | * port numbers 'vlandev_ofp_port' and 'realdev_ofp_port'. If | |
5561 | * 'realdev_ofp_port' is nonzero, then the VLAN device is enslaved to the real | |
5562 | * device as a VLAN splinter for VLAN ID 'vid'. If 'realdev_ofp_port' is zero, | |
5563 | * then the VLAN device is un-enslaved. */ | |
5564 | int | |
4e022ec0 AW |
5565 | ofproto_port_set_realdev(struct ofproto *ofproto, ofp_port_t vlandev_ofp_port, |
5566 | ofp_port_t realdev_ofp_port, int vid) | |
52a90c29 BP |
5567 | { |
5568 | struct ofport *ofport; | |
5569 | int error; | |
5570 | ||
cb22974d | 5571 | ovs_assert(vlandev_ofp_port != realdev_ofp_port); |
52a90c29 BP |
5572 | |
5573 | ofport = ofproto_get_port(ofproto, vlandev_ofp_port); | |
5574 | if (!ofport) { | |
5575 | VLOG_WARN("%s: cannot set realdev on nonexistent port %"PRIu16, | |
5576 | ofproto->name, vlandev_ofp_port); | |
5577 | return EINVAL; | |
5578 | } | |
5579 | ||
5580 | if (!ofproto->ofproto_class->set_realdev) { | |
5581 | if (!vlandev_ofp_port) { | |
5582 | return 0; | |
5583 | } | |
5584 | VLOG_WARN("%s: vlan splinters not supported", ofproto->name); | |
5585 | return EOPNOTSUPP; | |
5586 | } | |
5587 | ||
5588 | error = ofproto->ofproto_class->set_realdev(ofport, realdev_ofp_port, vid); | |
5589 | if (error) { | |
5590 | VLOG_WARN("%s: setting realdev on port %"PRIu16" (%s) failed (%s)", | |
5591 | ofproto->name, vlandev_ofp_port, | |
10a89ef0 | 5592 | netdev_get_name(ofport->netdev), ovs_strerror(error)); |
52a90c29 BP |
5593 | } |
5594 | return error; | |
5595 | } |