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