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064af421 | 1 | /* |
e0edde6f | 2 | * Copyright (c) 2009, 2010, 2011, 2012 Nicira, Inc. |
43253595 | 3 | * Copyright (c) 2010 Jean Tourrilhes - HP-Labs. |
064af421 | 4 | * |
a14bc59f BP |
5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
6 | * you may not use this file except in compliance with the License. | |
7 | * You may obtain a copy of the License at: | |
064af421 | 8 | * |
a14bc59f BP |
9 | * http://www.apache.org/licenses/LICENSE-2.0 |
10 | * | |
11 | * Unless required by applicable law or agreed to in writing, software | |
12 | * distributed under the License is distributed on an "AS IS" BASIS, | |
13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
14 | * See the License for the specific language governing permissions and | |
15 | * limitations under the License. | |
064af421 BP |
16 | */ |
17 | ||
18 | #include <config.h> | |
19 | #include "ofproto.h" | |
20 | #include <errno.h> | |
21 | #include <inttypes.h> | |
064af421 BP |
22 | #include <stdbool.h> |
23 | #include <stdlib.h> | |
52a90c29 | 24 | #include "bitmap.h" |
10a24935 | 25 | #include "byte-order.h" |
064af421 | 26 | #include "classifier.h" |
19a87e36 | 27 | #include "connmgr.h" |
064af421 | 28 | #include "coverage.h" |
4f2cad2c | 29 | #include "dynamic-string.h" |
ca0f572c BP |
30 | #include "hash.h" |
31 | #include "hmap.h" | |
254750ce | 32 | #include "meta-flow.h" |
064af421 | 33 | #include "netdev.h" |
09246b99 | 34 | #include "nx-match.h" |
f25d0cf3 | 35 | #include "ofp-actions.h" |
90bf1e07 | 36 | #include "ofp-errors.h" |
982697a4 | 37 | #include "ofp-msgs.h" |
064af421 | 38 | #include "ofp-print.h" |
fa37b408 | 39 | #include "ofp-util.h" |
064af421 | 40 | #include "ofpbuf.h" |
5bee6e26 | 41 | #include "ofproto-provider.h" |
064af421 BP |
42 | #include "openflow/nicira-ext.h" |
43 | #include "openflow/openflow.h" | |
064af421 BP |
44 | #include "packets.h" |
45 | #include "pinsched.h" | |
46 | #include "pktbuf.h" | |
47 | #include "poll-loop.h" | |
254750ce | 48 | #include "random.h" |
064af421 | 49 | #include "shash.h" |
0d085684 | 50 | #include "simap.h" |
b3c01ed3 | 51 | #include "sset.h" |
064af421 | 52 | #include "timeval.h" |
c4617b3c | 53 | #include "unaligned.h" |
4f2cad2c | 54 | #include "unixctl.h" |
5136ce49 | 55 | #include "vlog.h" |
064af421 | 56 | |
d98e6007 | 57 | VLOG_DEFINE_THIS_MODULE(ofproto); |
064af421 | 58 | |
d76f09ea | 59 | COVERAGE_DEFINE(ofproto_error); |
d76f09ea | 60 | COVERAGE_DEFINE(ofproto_flush); |
d76f09ea | 61 | COVERAGE_DEFINE(ofproto_no_packet_in); |
d76f09ea BP |
62 | COVERAGE_DEFINE(ofproto_packet_out); |
63 | COVERAGE_DEFINE(ofproto_queue_req); | |
64 | COVERAGE_DEFINE(ofproto_recv_openflow); | |
65 | COVERAGE_DEFINE(ofproto_reinit_ports); | |
d76f09ea BP |
66 | COVERAGE_DEFINE(ofproto_uninstallable); |
67 | COVERAGE_DEFINE(ofproto_update_port); | |
68 | ||
7ee20df1 BP |
69 | enum ofproto_state { |
70 | S_OPENFLOW, /* Processing OpenFlow commands. */ | |
254750ce | 71 | S_EVICT, /* Evicting flows from over-limit tables. */ |
7ee20df1 BP |
72 | S_FLUSH, /* Deleting all flow table rules. */ |
73 | }; | |
74 | ||
75 | enum ofoperation_type { | |
76 | OFOPERATION_ADD, | |
77 | OFOPERATION_DELETE, | |
78 | OFOPERATION_MODIFY | |
79 | }; | |
80 | ||
81 | /* A single OpenFlow request can execute any number of operations. The | |
82 | * ofopgroup maintain OpenFlow state common to all of the operations, e.g. the | |
83 | * ofconn to which an error reply should be sent if necessary. | |
84 | * | |
85 | * ofproto initiates some operations internally. These operations are still | |
86 | * assigned to groups but will not have an associated ofconn. */ | |
87 | struct ofopgroup { | |
88 | struct ofproto *ofproto; /* Owning ofproto. */ | |
89 | struct list ofproto_node; /* In ofproto's "pending" list. */ | |
90 | struct list ops; /* List of "struct ofoperation"s. */ | |
e615b0a3 | 91 | int n_running; /* Number of ops still pending. */ |
7ee20df1 BP |
92 | |
93 | /* Data needed to send OpenFlow reply on failure or to send a buffered | |
94 | * packet on success. | |
95 | * | |
96 | * If list_is_empty(ofconn_node) then this ofopgroup never had an | |
97 | * associated ofconn or its ofconn's connection dropped after it initiated | |
98 | * the operation. In the latter case 'ofconn' is a wild pointer that | |
99 | * refers to freed memory, so the 'ofconn' member must be used only if | |
100 | * !list_is_empty(ofconn_node). | |
101 | */ | |
102 | struct list ofconn_node; /* In ofconn's list of pending opgroups. */ | |
103 | struct ofconn *ofconn; /* ofconn for reply (but see note above). */ | |
104 | struct ofp_header *request; /* Original request (truncated at 64 bytes). */ | |
105 | uint32_t buffer_id; /* Buffer id from original request. */ | |
7ee20df1 BP |
106 | }; |
107 | ||
7024dffe BP |
108 | static struct ofopgroup *ofopgroup_create_unattached(struct ofproto *); |
109 | static struct ofopgroup *ofopgroup_create(struct ofproto *, struct ofconn *, | |
110 | const struct ofp_header *, | |
111 | uint32_t buffer_id); | |
7ee20df1 | 112 | static void ofopgroup_submit(struct ofopgroup *); |
e615b0a3 | 113 | static void ofopgroup_complete(struct ofopgroup *); |
7ee20df1 BP |
114 | |
115 | /* A single flow table operation. */ | |
116 | struct ofoperation { | |
117 | struct ofopgroup *group; /* Owning group. */ | |
118 | struct list group_node; /* In ofopgroup's "ops" list. */ | |
119 | struct hmap_node hmap_node; /* In ofproto's "deletions" hmap. */ | |
120 | struct rule *rule; /* Rule being operated upon. */ | |
121 | enum ofoperation_type type; /* Type of operation. */ | |
08043761 BP |
122 | |
123 | /* OFOPERATION_ADD. */ | |
124 | struct rule *victim; /* Rule being replaced, if any.. */ | |
125 | ||
126 | /* OFOPERATION_MODIFY: The old actions, if the actions are changing. */ | |
127 | struct ofpact *ofpacts; | |
128 | size_t ofpacts_len; | |
129 | ||
2b07c8b1 BP |
130 | /* OFOPERATION_DELETE. */ |
131 | enum ofp_flow_removed_reason reason; /* Reason flow was removed. */ | |
132 | ||
7ee20df1 | 133 | ovs_be64 flow_cookie; /* Rule's old flow cookie. */ |
e615b0a3 | 134 | enum ofperr error; /* 0 if no error. */ |
7ee20df1 BP |
135 | }; |
136 | ||
a7d94793 BP |
137 | static struct ofoperation *ofoperation_create(struct ofopgroup *, |
138 | struct rule *, | |
2b07c8b1 BP |
139 | enum ofoperation_type, |
140 | enum ofp_flow_removed_reason); | |
7ee20df1 BP |
141 | static void ofoperation_destroy(struct ofoperation *); |
142 | ||
d0918789 BP |
143 | /* oftable. */ |
144 | static void oftable_init(struct oftable *); | |
145 | static void oftable_destroy(struct oftable *); | |
878ae780 | 146 | |
254750ce BP |
147 | static void oftable_set_name(struct oftable *, const char *name); |
148 | ||
149 | static void oftable_disable_eviction(struct oftable *); | |
150 | static void oftable_enable_eviction(struct oftable *, | |
151 | const struct mf_subfield *fields, | |
152 | size_t n_fields); | |
153 | ||
d0918789 BP |
154 | static void oftable_remove_rule(struct rule *); |
155 | static struct rule *oftable_replace_rule(struct rule *); | |
156 | static void oftable_substitute_rule(struct rule *old, struct rule *new); | |
064af421 | 157 | |
254750ce BP |
158 | /* A set of rules within a single OpenFlow table (oftable) that have the same |
159 | * values for the oftable's eviction_fields. A rule to be evicted, when one is | |
160 | * needed, is taken from the eviction group that contains the greatest number | |
161 | * of rules. | |
162 | * | |
163 | * An oftable owns any number of eviction groups, each of which contains any | |
164 | * number of rules. | |
165 | * | |
166 | * Membership in an eviction group is imprecise, based on the hash of the | |
167 | * oftable's eviction_fields (in the eviction_group's id_node.hash member). | |
168 | * That is, if two rules have different eviction_fields, but those | |
169 | * eviction_fields hash to the same value, then they will belong to the same | |
170 | * eviction_group anyway. | |
171 | * | |
172 | * (When eviction is not enabled on an oftable, we don't track any eviction | |
173 | * groups, to save time and space.) */ | |
174 | struct eviction_group { | |
175 | struct hmap_node id_node; /* In oftable's "eviction_groups_by_id". */ | |
176 | struct heap_node size_node; /* In oftable's "eviction_groups_by_size". */ | |
177 | struct heap rules; /* Contains "struct rule"s. */ | |
178 | }; | |
179 | ||
180 | static struct rule *choose_rule_to_evict(struct oftable *); | |
181 | static void ofproto_evict(struct ofproto *); | |
182 | static uint32_t rule_eviction_priority(struct rule *); | |
f29152ca | 183 | |
d0918789 BP |
184 | /* ofport. */ |
185 | static void ofport_destroy__(struct ofport *); | |
186 | static void ofport_destroy(struct ofport *); | |
187 | ||
188 | static void update_port(struct ofproto *, const char *devname); | |
189 | static int init_ports(struct ofproto *); | |
190 | static void reinit_ports(struct ofproto *); | |
7ee20df1 | 191 | |
254750ce BP |
192 | /* rule. */ |
193 | static void ofproto_rule_destroy__(struct rule *); | |
194 | static void ofproto_rule_send_removed(struct rule *, uint8_t reason); | |
195 | static bool rule_is_modifiable(const struct rule *); | |
254750ce | 196 | |
d0918789 | 197 | /* OpenFlow. */ |
90bf1e07 BP |
198 | static enum ofperr add_flow(struct ofproto *, struct ofconn *, |
199 | const struct ofputil_flow_mod *, | |
200 | const struct ofp_header *); | |
254750ce | 201 | static void delete_flow__(struct rule *, struct ofopgroup *); |
7ee20df1 | 202 | static bool handle_openflow(struct ofconn *, struct ofpbuf *); |
90bf1e07 BP |
203 | static enum ofperr handle_flow_mod__(struct ofproto *, struct ofconn *, |
204 | const struct ofputil_flow_mod *, | |
d0918789 | 205 | const struct ofp_header *); |
f29152ca | 206 | |
d0918789 BP |
207 | /* ofproto. */ |
208 | static uint64_t pick_datapath_id(const struct ofproto *); | |
209 | static uint64_t pick_fallback_dpid(void); | |
210 | static void ofproto_destroy__(struct ofproto *); | |
ada3428f | 211 | static void update_mtu(struct ofproto *, struct ofport *); |
f29152ca | 212 | |
d0918789 | 213 | /* unixctl. */ |
abe529af | 214 | static void ofproto_unixctl_init(void); |
f29152ca | 215 | |
abe529af BP |
216 | /* All registered ofproto classes, in probe order. */ |
217 | static const struct ofproto_class **ofproto_classes; | |
218 | static size_t n_ofproto_classes; | |
219 | static size_t allocated_ofproto_classes; | |
7aa697dd | 220 | |
f797957a | 221 | /* Map from datapath name to struct ofproto, for use by unixctl commands. */ |
abe529af | 222 | static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos); |
ebe482fd | 223 | |
e1b1d06a JP |
224 | /* Initial mappings of port to OpenFlow number mappings. */ |
225 | static struct shash init_ofp_ports = SHASH_INITIALIZER(&init_ofp_ports); | |
226 | ||
abe529af | 227 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
f29152ca | 228 | |
b0408fca JP |
229 | /* Must be called to initialize the ofproto library. |
230 | * | |
231 | * The caller may pass in 'iface_hints', which contains an shash of | |
232 | * "iface_hint" elements indexed by the interface's name. The provider | |
233 | * may use these hints to describe the startup configuration in order to | |
234 | * reinitialize its state. The caller owns the provided data, so a | |
235 | * provider will make copies of anything required. An ofproto provider | |
236 | * will remove any existing state that is not described by the hint, and | |
237 | * may choose to remove it all. */ | |
238 | void | |
239 | ofproto_init(const struct shash *iface_hints) | |
abe529af | 240 | { |
e1b1d06a | 241 | struct shash_node *node; |
b0408fca | 242 | size_t i; |
f29152ca | 243 | |
b0408fca JP |
244 | ofproto_class_register(&ofproto_dpif_class); |
245 | ||
e1b1d06a JP |
246 | /* Make a local copy, since we don't own 'iface_hints' elements. */ |
247 | SHASH_FOR_EACH(node, iface_hints) { | |
248 | const struct iface_hint *orig_hint = node->data; | |
249 | struct iface_hint *new_hint = xmalloc(sizeof *new_hint); | |
250 | const char *br_type = ofproto_normalize_type(orig_hint->br_type); | |
251 | ||
252 | new_hint->br_name = xstrdup(orig_hint->br_name); | |
253 | new_hint->br_type = xstrdup(br_type); | |
254 | new_hint->ofp_port = orig_hint->ofp_port; | |
255 | ||
256 | shash_add(&init_ofp_ports, node->name, new_hint); | |
257 | } | |
258 | ||
b0408fca | 259 | for (i = 0; i < n_ofproto_classes; i++) { |
e1b1d06a | 260 | ofproto_classes[i]->init(&init_ofp_ports); |
abe529af BP |
261 | } |
262 | } | |
f29152ca | 263 | |
abe529af BP |
264 | /* 'type' should be a normalized datapath type, as returned by |
265 | * ofproto_normalize_type(). Returns the corresponding ofproto_class | |
266 | * structure, or a null pointer if there is none registered for 'type'. */ | |
267 | static const struct ofproto_class * | |
268 | ofproto_class_find__(const char *type) | |
269 | { | |
270 | size_t i; | |
f29152ca | 271 | |
abe529af BP |
272 | for (i = 0; i < n_ofproto_classes; i++) { |
273 | const struct ofproto_class *class = ofproto_classes[i]; | |
274 | struct sset types; | |
275 | bool found; | |
064af421 | 276 | |
abe529af BP |
277 | sset_init(&types); |
278 | class->enumerate_types(&types); | |
279 | found = sset_contains(&types, type); | |
280 | sset_destroy(&types); | |
bcf84111 | 281 | |
abe529af BP |
282 | if (found) { |
283 | return class; | |
284 | } | |
285 | } | |
286 | VLOG_WARN("unknown datapath type %s", type); | |
287 | return NULL; | |
288 | } | |
064af421 | 289 | |
abe529af BP |
290 | /* Registers a new ofproto class. After successful registration, new ofprotos |
291 | * of that type can be created using ofproto_create(). */ | |
292 | int | |
293 | ofproto_class_register(const struct ofproto_class *new_class) | |
294 | { | |
295 | size_t i; | |
7aa697dd | 296 | |
abe529af BP |
297 | for (i = 0; i < n_ofproto_classes; i++) { |
298 | if (ofproto_classes[i] == new_class) { | |
299 | return EEXIST; | |
300 | } | |
301 | } | |
064af421 | 302 | |
abe529af BP |
303 | if (n_ofproto_classes >= allocated_ofproto_classes) { |
304 | ofproto_classes = x2nrealloc(ofproto_classes, | |
305 | &allocated_ofproto_classes, | |
306 | sizeof *ofproto_classes); | |
307 | } | |
308 | ofproto_classes[n_ofproto_classes++] = new_class; | |
309 | return 0; | |
310 | } | |
064af421 | 311 | |
abe529af BP |
312 | /* Unregisters a datapath provider. 'type' must have been previously |
313 | * registered and not currently be in use by any ofprotos. After | |
314 | * unregistration new datapaths of that type cannot be opened using | |
315 | * ofproto_create(). */ | |
316 | int | |
317 | ofproto_class_unregister(const struct ofproto_class *class) | |
318 | { | |
319 | size_t i; | |
76ce9432 | 320 | |
abe529af BP |
321 | for (i = 0; i < n_ofproto_classes; i++) { |
322 | if (ofproto_classes[i] == class) { | |
323 | for (i++; i < n_ofproto_classes; i++) { | |
324 | ofproto_classes[i - 1] = ofproto_classes[i]; | |
325 | } | |
326 | n_ofproto_classes--; | |
327 | return 0; | |
328 | } | |
329 | } | |
330 | VLOG_WARN("attempted to unregister an ofproto class that is not " | |
331 | "registered"); | |
332 | return EAFNOSUPPORT; | |
333 | } | |
4a4cdb3b | 334 | |
f79e673f BP |
335 | /* Clears 'types' and enumerates all registered ofproto types into it. The |
336 | * caller must first initialize the sset. */ | |
337 | void | |
338 | ofproto_enumerate_types(struct sset *types) | |
339 | { | |
abe529af | 340 | size_t i; |
064af421 | 341 | |
abe529af BP |
342 | for (i = 0; i < n_ofproto_classes; i++) { |
343 | ofproto_classes[i]->enumerate_types(types); | |
344 | } | |
f79e673f | 345 | } |
064af421 | 346 | |
f79e673f BP |
347 | /* Returns the fully spelled out name for the given ofproto 'type'. |
348 | * | |
349 | * Normalized type string can be compared with strcmp(). Unnormalized type | |
350 | * string might be the same even if they have different spellings. */ | |
351 | const char * | |
352 | ofproto_normalize_type(const char *type) | |
353 | { | |
abe529af | 354 | return type && type[0] ? type : "system"; |
f79e673f | 355 | } |
064af421 | 356 | |
f79e673f BP |
357 | /* Clears 'names' and enumerates the names of all known created ofprotos with |
358 | * the given 'type'. The caller must first initialize the sset. Returns 0 if | |
359 | * successful, otherwise a positive errno value. | |
360 | * | |
361 | * Some kinds of datapaths might not be practically enumerable. This is not | |
362 | * considered an error. */ | |
363 | int | |
364 | ofproto_enumerate_names(const char *type, struct sset *names) | |
365 | { | |
abe529af BP |
366 | const struct ofproto_class *class = ofproto_class_find__(type); |
367 | return class ? class->enumerate_names(type, names) : EAFNOSUPPORT; | |
368 | } | |
7aa697dd | 369 | |
064af421 | 370 | int |
abe529af | 371 | ofproto_create(const char *datapath_name, const char *datapath_type, |
064af421 BP |
372 | struct ofproto **ofprotop) |
373 | { | |
abe529af BP |
374 | const struct ofproto_class *class; |
375 | struct ofproto *ofproto; | |
064af421 | 376 | int error; |
c2f0373a | 377 | int i; |
064af421 BP |
378 | |
379 | *ofprotop = NULL; | |
380 | ||
7aa697dd BP |
381 | ofproto_unixctl_init(); |
382 | ||
abe529af BP |
383 | datapath_type = ofproto_normalize_type(datapath_type); |
384 | class = ofproto_class_find__(datapath_type); | |
385 | if (!class) { | |
386 | VLOG_WARN("could not create datapath %s of unknown type %s", | |
387 | datapath_name, datapath_type); | |
388 | return EAFNOSUPPORT; | |
064af421 BP |
389 | } |
390 | ||
abe529af BP |
391 | ofproto = class->alloc(); |
392 | if (!ofproto) { | |
393 | VLOG_ERR("failed to allocate datapath %s of type %s", | |
394 | datapath_name, datapath_type); | |
395 | return ENOMEM; | |
396 | } | |
397 | ||
398 | /* Initialize. */ | |
399 | memset(ofproto, 0, sizeof *ofproto); | |
400 | ofproto->ofproto_class = class; | |
401 | ofproto->name = xstrdup(datapath_name); | |
402 | ofproto->type = xstrdup(datapath_type); | |
403 | hmap_insert(&all_ofprotos, &ofproto->hmap_node, | |
404 | hash_string(ofproto->name, 0)); | |
405 | ofproto->datapath_id = 0; | |
084f5290 | 406 | ofproto_set_flow_eviction_threshold(ofproto, |
9cac5195 | 407 | OFPROTO_FLOW_EVICTION_THRESHOLD_DEFAULT); |
8402c74b | 408 | ofproto->forward_bpdu = false; |
abe529af BP |
409 | ofproto->fallback_dpid = pick_fallback_dpid(); |
410 | ofproto->mfr_desc = xstrdup(DEFAULT_MFR_DESC); | |
411 | ofproto->hw_desc = xstrdup(DEFAULT_HW_DESC); | |
412 | ofproto->sw_desc = xstrdup(DEFAULT_SW_DESC); | |
413 | ofproto->serial_desc = xstrdup(DEFAULT_SERIAL_DESC); | |
414 | ofproto->dp_desc = xstrdup(DEFAULT_DP_DESC); | |
7257b535 | 415 | ofproto->frag_handling = OFPC_FRAG_NORMAL; |
abe529af BP |
416 | hmap_init(&ofproto->ports); |
417 | shash_init(&ofproto->port_by_name); | |
e1b1d06a | 418 | simap_init(&ofproto->ofp_requests); |
91858960 | 419 | ofproto->max_ports = OFPP_MAX; |
6c1491fb BP |
420 | ofproto->tables = NULL; |
421 | ofproto->n_tables = 0; | |
abe529af | 422 | ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name); |
7ee20df1 BP |
423 | ofproto->state = S_OPENFLOW; |
424 | list_init(&ofproto->pending); | |
dd5616b3 | 425 | ofproto->n_pending = 0; |
7ee20df1 | 426 | hmap_init(&ofproto->deletions); |
a5b8d268 BP |
427 | ofproto->n_add = ofproto->n_delete = ofproto->n_modify = 0; |
428 | ofproto->first_op = ofproto->last_op = LLONG_MIN; | |
429 | ofproto->next_op_report = LLONG_MAX; | |
430 | ofproto->op_backoff = LLONG_MIN; | |
52a90c29 BP |
431 | ofproto->vlan_bitmap = NULL; |
432 | ofproto->vlans_changed = false; | |
ada3428f | 433 | ofproto->min_mtu = INT_MAX; |
abe529af | 434 | |
0f5f95a9 | 435 | error = ofproto->ofproto_class->construct(ofproto); |
19a87e36 | 436 | if (error) { |
abe529af BP |
437 | VLOG_ERR("failed to open datapath %s: %s", |
438 | datapath_name, strerror(error)); | |
439 | ofproto_destroy__(ofproto); | |
19a87e36 BP |
440 | return error; |
441 | } | |
073e2a6f | 442 | |
e1b1d06a JP |
443 | /* The "max_ports" member should have been set by ->construct(ofproto). |
444 | * Port 0 is not a valid OpenFlow port, so mark that as unavailable. */ | |
445 | ofproto->ofp_port_ids = bitmap_allocate(ofproto->max_ports); | |
446 | bitmap_set1(ofproto->ofp_port_ids, 0); | |
447 | ||
c2f0373a | 448 | /* Check that hidden tables, if any, are at the end. */ |
0f5f95a9 | 449 | assert(ofproto->n_tables); |
c2f0373a BP |
450 | for (i = 0; i + 1 < ofproto->n_tables; i++) { |
451 | enum oftable_flags flags = ofproto->tables[i].flags; | |
452 | enum oftable_flags next_flags = ofproto->tables[i + 1].flags; | |
453 | ||
454 | assert(!(flags & OFTABLE_HIDDEN) || next_flags & OFTABLE_HIDDEN); | |
455 | } | |
19a87e36 | 456 | |
abe529af | 457 | ofproto->datapath_id = pick_datapath_id(ofproto); |
abe529af | 458 | init_ports(ofproto); |
7aa697dd | 459 | |
abe529af | 460 | *ofprotop = ofproto; |
064af421 BP |
461 | return 0; |
462 | } | |
463 | ||
91858960 BP |
464 | /* Must be called (only) by an ofproto implementation in its constructor |
465 | * function. See the large comment on 'construct' in struct ofproto_class for | |
466 | * details. */ | |
0f5f95a9 BP |
467 | void |
468 | ofproto_init_tables(struct ofproto *ofproto, int n_tables) | |
469 | { | |
470 | struct oftable *table; | |
471 | ||
472 | assert(!ofproto->n_tables); | |
473 | assert(n_tables >= 1 && n_tables <= 255); | |
474 | ||
475 | ofproto->n_tables = n_tables; | |
476 | ofproto->tables = xmalloc(n_tables * sizeof *ofproto->tables); | |
477 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
478 | oftable_init(table); | |
479 | } | |
480 | } | |
481 | ||
91858960 BP |
482 | /* To be optionally called (only) by an ofproto implementation in its |
483 | * constructor function. See the large comment on 'construct' in struct | |
484 | * ofproto_class for details. | |
485 | * | |
486 | * Sets the maximum number of ports to 'max_ports'. The ofproto generic layer | |
487 | * will then ensure that actions passed into the ofproto implementation will | |
488 | * not refer to OpenFlow ports numbered 'max_ports' or higher. If this | |
489 | * function is not called, there will be no such restriction. | |
490 | * | |
491 | * Reserved ports numbered OFPP_MAX and higher are special and not subject to | |
492 | * the 'max_ports' restriction. */ | |
493 | void | |
494 | ofproto_init_max_ports(struct ofproto *ofproto, uint16_t max_ports) | |
495 | { | |
496 | assert(max_ports <= OFPP_MAX); | |
497 | ofproto->max_ports = max_ports; | |
498 | } | |
499 | ||
e825ace2 BP |
500 | uint64_t |
501 | ofproto_get_datapath_id(const struct ofproto *ofproto) | |
502 | { | |
503 | return ofproto->datapath_id; | |
504 | } | |
505 | ||
064af421 BP |
506 | void |
507 | ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id) | |
508 | { | |
509 | uint64_t old_dpid = p->datapath_id; | |
fa60c019 | 510 | p->datapath_id = datapath_id ? datapath_id : pick_datapath_id(p); |
064af421 | 511 | if (p->datapath_id != old_dpid) { |
76ce9432 BP |
512 | /* Force all active connections to reconnect, since there is no way to |
513 | * notify a controller that the datapath ID has changed. */ | |
fa05809b | 514 | ofproto_reconnect_controllers(p); |
064af421 BP |
515 | } |
516 | } | |
517 | ||
76ce9432 BP |
518 | void |
519 | ofproto_set_controllers(struct ofproto *p, | |
520 | const struct ofproto_controller *controllers, | |
1d9ffc17 | 521 | size_t n_controllers, uint32_t allowed_versions) |
76ce9432 | 522 | { |
1d9ffc17 SH |
523 | connmgr_set_controllers(p->connmgr, controllers, n_controllers, |
524 | allowed_versions); | |
064af421 BP |
525 | } |
526 | ||
31681a5d JP |
527 | void |
528 | ofproto_set_fail_mode(struct ofproto *p, enum ofproto_fail_mode fail_mode) | |
529 | { | |
19a87e36 | 530 | connmgr_set_fail_mode(p->connmgr, fail_mode); |
31681a5d JP |
531 | } |
532 | ||
fa05809b BP |
533 | /* Drops the connections between 'ofproto' and all of its controllers, forcing |
534 | * them to reconnect. */ | |
535 | void | |
536 | ofproto_reconnect_controllers(struct ofproto *ofproto) | |
537 | { | |
19a87e36 | 538 | connmgr_reconnect(ofproto->connmgr); |
917e50e1 BP |
539 | } |
540 | ||
541 | /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s | |
542 | * in-band control should guarantee access, in the same way that in-band | |
543 | * control guarantees access to OpenFlow controllers. */ | |
544 | void | |
545 | ofproto_set_extra_in_band_remotes(struct ofproto *ofproto, | |
546 | const struct sockaddr_in *extras, size_t n) | |
547 | { | |
19a87e36 | 548 | connmgr_set_extra_in_band_remotes(ofproto->connmgr, extras, n); |
917e50e1 BP |
549 | } |
550 | ||
b1da6250 BP |
551 | /* Sets the OpenFlow queue used by flows set up by in-band control on |
552 | * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control | |
553 | * flows will use the default queue. */ | |
554 | void | |
555 | ofproto_set_in_band_queue(struct ofproto *ofproto, int queue_id) | |
556 | { | |
19a87e36 | 557 | connmgr_set_in_band_queue(ofproto->connmgr, queue_id); |
b1da6250 BP |
558 | } |
559 | ||
084f5290 SH |
560 | /* Sets the number of flows at which eviction from the kernel flow table |
561 | * will occur. */ | |
562 | void | |
563 | ofproto_set_flow_eviction_threshold(struct ofproto *ofproto, unsigned threshold) | |
564 | { | |
565 | if (threshold < OFPROTO_FLOW_EVICTION_THRESHOLD_MIN) { | |
566 | ofproto->flow_eviction_threshold = OFPROTO_FLOW_EVICTION_THRESHOLD_MIN; | |
567 | } else { | |
568 | ofproto->flow_eviction_threshold = threshold; | |
569 | } | |
570 | } | |
571 | ||
b53055f4 | 572 | /* If forward_bpdu is true, the NORMAL action will forward frames with |
8402c74b SS |
573 | * reserved (e.g. STP) destination Ethernet addresses. if forward_bpdu is false, |
574 | * the NORMAL action will drop these frames. */ | |
575 | void | |
576 | ofproto_set_forward_bpdu(struct ofproto *ofproto, bool forward_bpdu) | |
577 | { | |
578 | bool old_val = ofproto->forward_bpdu; | |
579 | ofproto->forward_bpdu = forward_bpdu; | |
580 | if (old_val != ofproto->forward_bpdu) { | |
581 | if (ofproto->ofproto_class->forward_bpdu_changed) { | |
582 | ofproto->ofproto_class->forward_bpdu_changed(ofproto); | |
583 | } | |
b53055f4 | 584 | } |
8402c74b SS |
585 | } |
586 | ||
e764773c BP |
587 | /* Sets the MAC aging timeout for the OFPP_NORMAL action on 'ofproto' to |
588 | * 'idle_time', in seconds. */ | |
589 | void | |
590 | ofproto_set_mac_idle_time(struct ofproto *ofproto, unsigned idle_time) | |
591 | { | |
592 | if (ofproto->ofproto_class->set_mac_idle_time) { | |
593 | ofproto->ofproto_class->set_mac_idle_time(ofproto, idle_time); | |
594 | } | |
595 | } | |
596 | ||
064af421 BP |
597 | void |
598 | ofproto_set_desc(struct ofproto *p, | |
5a719c38 JP |
599 | const char *mfr_desc, const char *hw_desc, |
600 | const char *sw_desc, const char *serial_desc, | |
8abc4ed7 | 601 | const char *dp_desc) |
064af421 | 602 | { |
5a719c38 JP |
603 | struct ofp_desc_stats *ods; |
604 | ||
605 | if (mfr_desc) { | |
606 | if (strlen(mfr_desc) >= sizeof ods->mfr_desc) { | |
fbfa2911 BP |
607 | VLOG_WARN("%s: truncating mfr_desc, must be less than %zu bytes", |
608 | p->name, sizeof ods->mfr_desc); | |
5a719c38 JP |
609 | } |
610 | free(p->mfr_desc); | |
611 | p->mfr_desc = xstrdup(mfr_desc); | |
064af421 | 612 | } |
5a719c38 JP |
613 | if (hw_desc) { |
614 | if (strlen(hw_desc) >= sizeof ods->hw_desc) { | |
fbfa2911 BP |
615 | VLOG_WARN("%s: truncating hw_desc, must be less than %zu bytes", |
616 | p->name, sizeof ods->hw_desc); | |
5a719c38 JP |
617 | } |
618 | free(p->hw_desc); | |
619 | p->hw_desc = xstrdup(hw_desc); | |
064af421 | 620 | } |
5a719c38 JP |
621 | if (sw_desc) { |
622 | if (strlen(sw_desc) >= sizeof ods->sw_desc) { | |
fbfa2911 BP |
623 | VLOG_WARN("%s: truncating sw_desc, must be less than %zu bytes", |
624 | p->name, sizeof ods->sw_desc); | |
5a719c38 JP |
625 | } |
626 | free(p->sw_desc); | |
627 | p->sw_desc = xstrdup(sw_desc); | |
628 | } | |
629 | if (serial_desc) { | |
630 | if (strlen(serial_desc) >= sizeof ods->serial_num) { | |
fbfa2911 BP |
631 | VLOG_WARN("%s: truncating serial_desc, must be less than %zu " |
632 | "bytes", p->name, sizeof ods->serial_num); | |
5a719c38 JP |
633 | } |
634 | free(p->serial_desc); | |
635 | p->serial_desc = xstrdup(serial_desc); | |
064af421 | 636 | } |
8abc4ed7 | 637 | if (dp_desc) { |
5a719c38 | 638 | if (strlen(dp_desc) >= sizeof ods->dp_desc) { |
fbfa2911 BP |
639 | VLOG_WARN("%s: truncating dp_desc, must be less than %zu bytes", |
640 | p->name, sizeof ods->dp_desc); | |
5a719c38 | 641 | } |
8abc4ed7 JP |
642 | free(p->dp_desc); |
643 | p->dp_desc = xstrdup(dp_desc); | |
644 | } | |
064af421 BP |
645 | } |
646 | ||
064af421 | 647 | int |
81e2083f | 648 | ofproto_set_snoops(struct ofproto *ofproto, const struct sset *snoops) |
064af421 | 649 | { |
19a87e36 | 650 | return connmgr_set_snoops(ofproto->connmgr, snoops); |
064af421 BP |
651 | } |
652 | ||
653 | int | |
0193b2af JG |
654 | ofproto_set_netflow(struct ofproto *ofproto, |
655 | const struct netflow_options *nf_options) | |
064af421 | 656 | { |
abe529af BP |
657 | if (nf_options && sset_is_empty(&nf_options->collectors)) { |
658 | nf_options = NULL; | |
659 | } | |
660 | ||
661 | if (ofproto->ofproto_class->set_netflow) { | |
662 | return ofproto->ofproto_class->set_netflow(ofproto, nf_options); | |
064af421 | 663 | } else { |
abe529af | 664 | return nf_options ? EOPNOTSUPP : 0; |
064af421 BP |
665 | } |
666 | } | |
667 | ||
abe529af | 668 | int |
72b06300 BP |
669 | ofproto_set_sflow(struct ofproto *ofproto, |
670 | const struct ofproto_sflow_options *oso) | |
671 | { | |
abe529af BP |
672 | if (oso && sset_is_empty(&oso->targets)) { |
673 | oso = NULL; | |
674 | } | |
72b06300 | 675 | |
abe529af BP |
676 | if (ofproto->ofproto_class->set_sflow) { |
677 | return ofproto->ofproto_class->set_sflow(ofproto, oso); | |
72b06300 | 678 | } else { |
abe529af | 679 | return oso ? EOPNOTSUPP : 0; |
72b06300 BP |
680 | } |
681 | } | |
e7934396 | 682 | \f |
21f7563c JP |
683 | /* Spanning Tree Protocol (STP) configuration. */ |
684 | ||
685 | /* Configures STP on 'ofproto' using the settings defined in 's'. If | |
686 | * 's' is NULL, disables STP. | |
687 | * | |
688 | * Returns 0 if successful, otherwise a positive errno value. */ | |
689 | int | |
690 | ofproto_set_stp(struct ofproto *ofproto, | |
691 | const struct ofproto_stp_settings *s) | |
692 | { | |
693 | return (ofproto->ofproto_class->set_stp | |
694 | ? ofproto->ofproto_class->set_stp(ofproto, s) | |
695 | : EOPNOTSUPP); | |
696 | } | |
697 | ||
698 | /* Retrieves STP status of 'ofproto' and stores it in 's'. If the | |
699 | * 'enabled' member of 's' is false, then the other members are not | |
700 | * meaningful. | |
701 | * | |
702 | * Returns 0 if successful, otherwise a positive errno value. */ | |
703 | int | |
704 | ofproto_get_stp_status(struct ofproto *ofproto, | |
705 | struct ofproto_stp_status *s) | |
706 | { | |
707 | return (ofproto->ofproto_class->get_stp_status | |
708 | ? ofproto->ofproto_class->get_stp_status(ofproto, s) | |
709 | : EOPNOTSUPP); | |
710 | } | |
711 | ||
712 | /* Configures STP on 'ofp_port' of 'ofproto' using the settings defined | |
713 | * in 's'. The caller is responsible for assigning STP port numbers | |
714 | * (using the 'port_num' member in the range of 1 through 255, inclusive) | |
715 | * and ensuring there are no duplicates. If the 's' is NULL, then STP | |
716 | * is disabled on the port. | |
717 | * | |
718 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
719 | int | |
720 | ofproto_port_set_stp(struct ofproto *ofproto, uint16_t ofp_port, | |
721 | const struct ofproto_port_stp_settings *s) | |
722 | { | |
723 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
724 | if (!ofport) { | |
725 | VLOG_WARN("%s: cannot configure STP on nonexistent port %"PRIu16, | |
726 | ofproto->name, ofp_port); | |
727 | return ENODEV; | |
728 | } | |
729 | ||
730 | return (ofproto->ofproto_class->set_stp_port | |
731 | ? ofproto->ofproto_class->set_stp_port(ofport, s) | |
732 | : EOPNOTSUPP); | |
733 | } | |
734 | ||
735 | /* Retrieves STP port status of 'ofp_port' on 'ofproto' and stores it in | |
736 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
737 | * are not meaningful. | |
738 | * | |
739 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
740 | int | |
741 | ofproto_port_get_stp_status(struct ofproto *ofproto, uint16_t ofp_port, | |
742 | struct ofproto_port_stp_status *s) | |
743 | { | |
744 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
745 | if (!ofport) { | |
b0a5c43b JP |
746 | VLOG_WARN_RL(&rl, "%s: cannot get STP status on nonexistent " |
747 | "port %"PRIu16, ofproto->name, ofp_port); | |
21f7563c JP |
748 | return ENODEV; |
749 | } | |
750 | ||
751 | return (ofproto->ofproto_class->get_stp_port_status | |
752 | ? ofproto->ofproto_class->get_stp_port_status(ofport, s) | |
753 | : EOPNOTSUPP); | |
754 | } | |
755 | \f | |
8b36f51e EJ |
756 | /* Queue DSCP configuration. */ |
757 | ||
758 | /* Registers meta-data associated with the 'n_qdscp' Qualities of Service | |
759 | * 'queues' attached to 'ofport'. This data is not intended to be sufficient | |
760 | * to implement QoS. Instead, it is used to implement features which require | |
761 | * knowledge of what queues exist on a port, and some basic information about | |
762 | * them. | |
763 | * | |
764 | * Returns 0 if successful, otherwise a positive errno value. */ | |
765 | int | |
766 | ofproto_port_set_queues(struct ofproto *ofproto, uint16_t ofp_port, | |
767 | const struct ofproto_port_queue *queues, | |
768 | size_t n_queues) | |
769 | { | |
770 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
771 | ||
772 | if (!ofport) { | |
773 | VLOG_WARN("%s: cannot set queues on nonexistent port %"PRIu16, | |
774 | ofproto->name, ofp_port); | |
775 | return ENODEV; | |
776 | } | |
777 | ||
778 | return (ofproto->ofproto_class->set_queues | |
779 | ? ofproto->ofproto_class->set_queues(ofport, queues, n_queues) | |
780 | : EOPNOTSUPP); | |
781 | } | |
782 | \f | |
e7934396 BP |
783 | /* Connectivity Fault Management configuration. */ |
784 | ||
892815f5 | 785 | /* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */ |
e7934396 | 786 | void |
892815f5 | 787 | ofproto_port_clear_cfm(struct ofproto *ofproto, uint16_t ofp_port) |
e7934396 | 788 | { |
abe529af BP |
789 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
790 | if (ofport && ofproto->ofproto_class->set_cfm) { | |
a5610457 | 791 | ofproto->ofproto_class->set_cfm(ofport, NULL); |
e7934396 BP |
792 | } |
793 | } | |
72b06300 | 794 | |
892815f5 | 795 | /* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes |
93b8df38 EJ |
796 | * basic configuration from the configuration members in 'cfm', and the remote |
797 | * maintenance point ID from remote_mpid. Ignores the statistics members of | |
798 | * 'cfm'. | |
e7934396 | 799 | * |
892815f5 | 800 | * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */ |
e7934396 | 801 | void |
892815f5 | 802 | ofproto_port_set_cfm(struct ofproto *ofproto, uint16_t ofp_port, |
a5610457 | 803 | const struct cfm_settings *s) |
e7934396 BP |
804 | { |
805 | struct ofport *ofport; | |
abe529af | 806 | int error; |
e7934396 | 807 | |
abe529af | 808 | ofport = ofproto_get_port(ofproto, ofp_port); |
e7934396 | 809 | if (!ofport) { |
892815f5 BP |
810 | VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16, |
811 | ofproto->name, ofp_port); | |
e7934396 BP |
812 | return; |
813 | } | |
814 | ||
93b8df38 EJ |
815 | /* XXX: For configuration simplicity, we only support one remote_mpid |
816 | * outside of the CFM module. It's not clear if this is the correct long | |
817 | * term solution or not. */ | |
abe529af | 818 | error = (ofproto->ofproto_class->set_cfm |
a5610457 | 819 | ? ofproto->ofproto_class->set_cfm(ofport, s) |
abe529af BP |
820 | : EOPNOTSUPP); |
821 | if (error) { | |
822 | VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed (%s)", | |
823 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
824 | strerror(error)); | |
e7934396 | 825 | } |
e7934396 | 826 | } |
e7934396 | 827 | |
fa066f01 BP |
828 | /* Checks the status of LACP negotiation for 'ofp_port' within ofproto. |
829 | * Returns 1 if LACP partner information for 'ofp_port' is up-to-date, | |
830 | * 0 if LACP partner information is not current (generally indicating a | |
831 | * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */ | |
832 | int | |
833 | ofproto_port_is_lacp_current(struct ofproto *ofproto, uint16_t ofp_port) | |
834 | { | |
abe529af BP |
835 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
836 | return (ofport && ofproto->ofproto_class->port_is_lacp_current | |
837 | ? ofproto->ofproto_class->port_is_lacp_current(ofport) | |
fa066f01 | 838 | : -1); |
e7934396 | 839 | } |
e7934396 | 840 | \f |
fa066f01 | 841 | /* Bundles. */ |
e7934396 | 842 | |
abe529af BP |
843 | /* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'. |
844 | * A bundle is the same concept as a Port in OVSDB, that is, it consists of one | |
845 | * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN | |
846 | * configuration plus, if there is more than one slave, a bonding | |
847 | * configuration. | |
848 | * | |
849 | * If 'aux' is already registered then this function updates its configuration | |
850 | * to 's'. Otherwise, this function registers a new bundle. | |
851 | * | |
852 | * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL | |
853 | * port. */ | |
854 | int | |
855 | ofproto_bundle_register(struct ofproto *ofproto, void *aux, | |
856 | const struct ofproto_bundle_settings *s) | |
fa066f01 | 857 | { |
abe529af BP |
858 | return (ofproto->ofproto_class->bundle_set |
859 | ? ofproto->ofproto_class->bundle_set(ofproto, aux, s) | |
860 | : EOPNOTSUPP); | |
fa066f01 BP |
861 | } |
862 | ||
abe529af BP |
863 | /* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'. |
864 | * If no such bundle has been registered, this has no effect. */ | |
865 | int | |
866 | ofproto_bundle_unregister(struct ofproto *ofproto, void *aux) | |
e7934396 | 867 | { |
abe529af | 868 | return ofproto_bundle_register(ofproto, aux, NULL); |
e7934396 | 869 | } |
fa066f01 | 870 | |
e7934396 | 871 | \f |
abe529af BP |
872 | /* Registers a mirror associated with client data pointer 'aux' in 'ofproto'. |
873 | * If 'aux' is already registered then this function updates its configuration | |
c06bba01 | 874 | * to 's'. Otherwise, this function registers a new mirror. */ |
abe529af BP |
875 | int |
876 | ofproto_mirror_register(struct ofproto *ofproto, void *aux, | |
877 | const struct ofproto_mirror_settings *s) | |
064af421 | 878 | { |
abe529af BP |
879 | return (ofproto->ofproto_class->mirror_set |
880 | ? ofproto->ofproto_class->mirror_set(ofproto, aux, s) | |
881 | : EOPNOTSUPP); | |
064af421 BP |
882 | } |
883 | ||
abe529af BP |
884 | /* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'. |
885 | * If no mirror has been registered, this has no effect. */ | |
886 | int | |
887 | ofproto_mirror_unregister(struct ofproto *ofproto, void *aux) | |
064af421 | 888 | { |
abe529af | 889 | return ofproto_mirror_register(ofproto, aux, NULL); |
064af421 BP |
890 | } |
891 | ||
9d24de3b JP |
892 | /* Retrieves statistics from mirror associated with client data pointer |
893 | * 'aux' in 'ofproto'. Stores packet and byte counts in 'packets' and | |
894 | * 'bytes', respectively. If a particular counters is not supported, | |
895 | * the appropriate argument is set to UINT64_MAX. */ | |
896 | int | |
897 | ofproto_mirror_get_stats(struct ofproto *ofproto, void *aux, | |
898 | uint64_t *packets, uint64_t *bytes) | |
899 | { | |
900 | if (!ofproto->ofproto_class->mirror_get_stats) { | |
901 | *packets = *bytes = UINT64_MAX; | |
902 | return EOPNOTSUPP; | |
903 | } | |
904 | ||
905 | return ofproto->ofproto_class->mirror_get_stats(ofproto, aux, | |
906 | packets, bytes); | |
907 | } | |
908 | ||
abe529af BP |
909 | /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on |
910 | * which all packets are flooded, instead of using MAC learning. If | |
911 | * 'flood_vlans' is NULL, then MAC learning applies to all VLANs. | |
912 | * | |
913 | * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL | |
914 | * port. */ | |
915 | int | |
916 | ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans) | |
abdfe474 | 917 | { |
abe529af BP |
918 | return (ofproto->ofproto_class->set_flood_vlans |
919 | ? ofproto->ofproto_class->set_flood_vlans(ofproto, flood_vlans) | |
920 | : EOPNOTSUPP); | |
abdfe474 JP |
921 | } |
922 | ||
abe529af BP |
923 | /* Returns true if 'aux' is a registered bundle that is currently in use as the |
924 | * output for a mirror. */ | |
925 | bool | |
b4affc74 | 926 | ofproto_is_mirror_output_bundle(const struct ofproto *ofproto, void *aux) |
abe529af BP |
927 | { |
928 | return (ofproto->ofproto_class->is_mirror_output_bundle | |
929 | ? ofproto->ofproto_class->is_mirror_output_bundle(ofproto, aux) | |
930 | : false); | |
931 | } | |
932 | \f | |
254750ce BP |
933 | /* Configuration of OpenFlow tables. */ |
934 | ||
935 | /* Returns the number of OpenFlow tables in 'ofproto'. */ | |
936 | int | |
937 | ofproto_get_n_tables(const struct ofproto *ofproto) | |
938 | { | |
939 | return ofproto->n_tables; | |
940 | } | |
941 | ||
942 | /* Configures the OpenFlow table in 'ofproto' with id 'table_id' with the | |
943 | * settings from 's'. 'table_id' must be in the range 0 through the number of | |
944 | * OpenFlow tables in 'ofproto' minus 1, inclusive. | |
945 | * | |
946 | * For read-only tables, only the name may be configured. */ | |
947 | void | |
948 | ofproto_configure_table(struct ofproto *ofproto, int table_id, | |
949 | const struct ofproto_table_settings *s) | |
950 | { | |
951 | struct oftable *table; | |
952 | ||
953 | assert(table_id >= 0 && table_id < ofproto->n_tables); | |
954 | table = &ofproto->tables[table_id]; | |
955 | ||
956 | oftable_set_name(table, s->name); | |
957 | ||
958 | if (table->flags & OFTABLE_READONLY) { | |
959 | return; | |
960 | } | |
961 | ||
962 | if (s->groups) { | |
963 | oftable_enable_eviction(table, s->groups, s->n_groups); | |
964 | } else { | |
965 | oftable_disable_eviction(table); | |
966 | } | |
967 | ||
968 | table->max_flows = s->max_flows; | |
969 | if (classifier_count(&table->cls) > table->max_flows | |
970 | && table->eviction_fields) { | |
971 | /* 'table' contains more flows than allowed. We might not be able to | |
972 | * evict them right away because of the asynchronous nature of flow | |
973 | * table changes. Schedule eviction for later. */ | |
974 | switch (ofproto->state) { | |
975 | case S_OPENFLOW: | |
976 | ofproto->state = S_EVICT; | |
977 | break; | |
978 | case S_EVICT: | |
979 | case S_FLUSH: | |
980 | /* We're already deleting flows, nothing more to do. */ | |
981 | break; | |
982 | } | |
983 | } | |
984 | } | |
985 | \f | |
81e2083f BP |
986 | bool |
987 | ofproto_has_snoops(const struct ofproto *ofproto) | |
988 | { | |
989 | return connmgr_has_snoops(ofproto->connmgr); | |
990 | } | |
991 | ||
064af421 | 992 | void |
81e2083f | 993 | ofproto_get_snoops(const struct ofproto *ofproto, struct sset *snoops) |
064af421 | 994 | { |
19a87e36 | 995 | connmgr_get_snoops(ofproto->connmgr, snoops); |
064af421 BP |
996 | } |
997 | ||
7ee20df1 BP |
998 | static void |
999 | ofproto_flush__(struct ofproto *ofproto) | |
1000 | { | |
7ee20df1 | 1001 | struct ofopgroup *group; |
d0918789 | 1002 | struct oftable *table; |
7ee20df1 BP |
1003 | |
1004 | if (ofproto->ofproto_class->flush) { | |
1005 | ofproto->ofproto_class->flush(ofproto); | |
1006 | } | |
1007 | ||
7024dffe | 1008 | group = ofopgroup_create_unattached(ofproto); |
b772ded8 | 1009 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
7ee20df1 BP |
1010 | struct rule *rule, *next_rule; |
1011 | struct cls_cursor cursor; | |
1012 | ||
5c67e4af BP |
1013 | if (table->flags & OFTABLE_HIDDEN) { |
1014 | continue; | |
1015 | } | |
1016 | ||
d0918789 | 1017 | cls_cursor_init(&cursor, &table->cls, NULL); |
7ee20df1 BP |
1018 | CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) { |
1019 | if (!rule->pending) { | |
2b07c8b1 BP |
1020 | ofoperation_create(group, rule, OFOPERATION_DELETE, |
1021 | OFPRR_DELETE); | |
d0918789 | 1022 | oftable_remove_rule(rule); |
7ee20df1 BP |
1023 | ofproto->ofproto_class->rule_destruct(rule); |
1024 | } | |
1025 | } | |
1026 | } | |
1027 | ofopgroup_submit(group); | |
1028 | } | |
1029 | ||
abe529af BP |
1030 | static void |
1031 | ofproto_destroy__(struct ofproto *ofproto) | |
1032 | { | |
d0918789 | 1033 | struct oftable *table; |
6c1491fb | 1034 | |
7ee20df1 | 1035 | assert(list_is_empty(&ofproto->pending)); |
dd5616b3 | 1036 | assert(!ofproto->n_pending); |
7ee20df1 | 1037 | |
abe529af | 1038 | connmgr_destroy(ofproto->connmgr); |
fa066f01 | 1039 | |
abe529af BP |
1040 | hmap_remove(&all_ofprotos, &ofproto->hmap_node); |
1041 | free(ofproto->name); | |
955a7127 | 1042 | free(ofproto->type); |
abe529af BP |
1043 | free(ofproto->mfr_desc); |
1044 | free(ofproto->hw_desc); | |
1045 | free(ofproto->sw_desc); | |
1046 | free(ofproto->serial_desc); | |
1047 | free(ofproto->dp_desc); | |
abe529af BP |
1048 | hmap_destroy(&ofproto->ports); |
1049 | shash_destroy(&ofproto->port_by_name); | |
e1b1d06a JP |
1050 | bitmap_free(ofproto->ofp_port_ids); |
1051 | simap_destroy(&ofproto->ofp_requests); | |
6c1491fb | 1052 | |
b772ded8 | 1053 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
d0918789 | 1054 | oftable_destroy(table); |
6c1491fb BP |
1055 | } |
1056 | free(ofproto->tables); | |
fa066f01 | 1057 | |
7ee20df1 BP |
1058 | hmap_destroy(&ofproto->deletions); |
1059 | ||
52a90c29 BP |
1060 | free(ofproto->vlan_bitmap); |
1061 | ||
abe529af BP |
1062 | ofproto->ofproto_class->dealloc(ofproto); |
1063 | } | |
fa066f01 | 1064 | |
064af421 BP |
1065 | void |
1066 | ofproto_destroy(struct ofproto *p) | |
1067 | { | |
ca0f572c | 1068 | struct ofport *ofport, *next_ofport; |
064af421 BP |
1069 | |
1070 | if (!p) { | |
1071 | return; | |
1072 | } | |
1073 | ||
7ee20df1 | 1074 | ofproto_flush__(p); |
4e8e4213 | 1075 | HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) { |
abe529af | 1076 | ofport_destroy(ofport); |
064af421 | 1077 | } |
064af421 | 1078 | |
abe529af BP |
1079 | p->ofproto_class->destruct(p); |
1080 | ofproto_destroy__(p); | |
064af421 BP |
1081 | } |
1082 | ||
abe529af BP |
1083 | /* Destroys the datapath with the respective 'name' and 'type'. With the Linux |
1084 | * kernel datapath, for example, this destroys the datapath in the kernel, and | |
1085 | * with the netdev-based datapath, it tears down the data structures that | |
1086 | * represent the datapath. | |
1087 | * | |
1088 | * The datapath should not be currently open as an ofproto. */ | |
064af421 | 1089 | int |
abe529af | 1090 | ofproto_delete(const char *name, const char *type) |
064af421 | 1091 | { |
abe529af BP |
1092 | const struct ofproto_class *class = ofproto_class_find__(type); |
1093 | return (!class ? EAFNOSUPPORT | |
1094 | : !class->del ? EACCES | |
1095 | : class->del(type, name)); | |
064af421 BP |
1096 | } |
1097 | ||
e9e28be3 BP |
1098 | static void |
1099 | process_port_change(struct ofproto *ofproto, int error, char *devname) | |
1100 | { | |
1101 | if (error == ENOBUFS) { | |
1102 | reinit_ports(ofproto); | |
1103 | } else if (!error) { | |
1104 | update_port(ofproto, devname); | |
1105 | free(devname); | |
1106 | } | |
1107 | } | |
1108 | ||
11a574a7 JP |
1109 | int |
1110 | ofproto_type_run(const char *datapath_type) | |
1111 | { | |
1112 | const struct ofproto_class *class; | |
1113 | int error; | |
1114 | ||
1115 | datapath_type = ofproto_normalize_type(datapath_type); | |
1116 | class = ofproto_class_find__(datapath_type); | |
1117 | ||
1118 | error = class->type_run ? class->type_run(datapath_type) : 0; | |
1119 | if (error && error != EAGAIN) { | |
1120 | VLOG_ERR_RL(&rl, "%s: type_run failed (%s)", | |
1121 | datapath_type, strerror(error)); | |
1122 | } | |
1123 | return error; | |
1124 | } | |
1125 | ||
1126 | int | |
1127 | ofproto_type_run_fast(const char *datapath_type) | |
1128 | { | |
1129 | const struct ofproto_class *class; | |
1130 | int error; | |
1131 | ||
1132 | datapath_type = ofproto_normalize_type(datapath_type); | |
1133 | class = ofproto_class_find__(datapath_type); | |
1134 | ||
1135 | error = class->type_run_fast ? class->type_run_fast(datapath_type) : 0; | |
1136 | if (error && error != EAGAIN) { | |
1137 | VLOG_ERR_RL(&rl, "%s: type_run_fast failed (%s)", | |
1138 | datapath_type, strerror(error)); | |
1139 | } | |
1140 | return error; | |
1141 | } | |
1142 | ||
1143 | void | |
1144 | ofproto_type_wait(const char *datapath_type) | |
1145 | { | |
1146 | const struct ofproto_class *class; | |
1147 | ||
1148 | datapath_type = ofproto_normalize_type(datapath_type); | |
1149 | class = ofproto_class_find__(datapath_type); | |
1150 | ||
1151 | if (class->type_wait) { | |
1152 | class->type_wait(datapath_type); | |
1153 | } | |
1154 | } | |
1155 | ||
064af421 | 1156 | int |
abe529af | 1157 | ofproto_run(struct ofproto *p) |
064af421 | 1158 | { |
7436ed80 BP |
1159 | struct sset changed_netdevs; |
1160 | const char *changed_netdev; | |
031d8bff | 1161 | struct ofport *ofport; |
064af421 | 1162 | int error; |
064af421 | 1163 | |
abe529af | 1164 | error = p->ofproto_class->run(p); |
5fcc0d00 BP |
1165 | if (error && error != EAGAIN) { |
1166 | VLOG_ERR_RL(&rl, "%s: run failed (%s)", p->name, strerror(error)); | |
149f577a JG |
1167 | } |
1168 | ||
5bf0e941 | 1169 | if (p->ofproto_class->port_poll) { |
7436ed80 BP |
1170 | char *devname; |
1171 | ||
5bf0e941 BP |
1172 | while ((error = p->ofproto_class->port_poll(p, &devname)) != EAGAIN) { |
1173 | process_port_change(p, error, devname); | |
064af421 | 1174 | } |
e9e28be3 | 1175 | } |
031d8bff | 1176 | |
7436ed80 BP |
1177 | /* Update OpenFlow port status for any port whose netdev has changed. |
1178 | * | |
1179 | * Refreshing a given 'ofport' can cause an arbitrary ofport to be | |
1180 | * destroyed, so it's not safe to update ports directly from the | |
1181 | * HMAP_FOR_EACH loop, or even to use HMAP_FOR_EACH_SAFE. Instead, we | |
1182 | * need this two-phase approach. */ | |
1183 | sset_init(&changed_netdevs); | |
031d8bff EJ |
1184 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { |
1185 | unsigned int change_seq = netdev_change_seq(ofport->netdev); | |
1186 | if (ofport->change_seq != change_seq) { | |
1187 | ofport->change_seq = change_seq; | |
7436ed80 | 1188 | sset_add(&changed_netdevs, netdev_get_name(ofport->netdev)); |
031d8bff | 1189 | } |
064af421 | 1190 | } |
7436ed80 BP |
1191 | SSET_FOR_EACH (changed_netdev, &changed_netdevs) { |
1192 | update_port(p, changed_netdev); | |
1193 | } | |
1194 | sset_destroy(&changed_netdevs); | |
064af421 | 1195 | |
7ee20df1 BP |
1196 | switch (p->state) { |
1197 | case S_OPENFLOW: | |
1198 | connmgr_run(p->connmgr, handle_openflow); | |
1199 | break; | |
1200 | ||
254750ce BP |
1201 | case S_EVICT: |
1202 | connmgr_run(p->connmgr, NULL); | |
1203 | ofproto_evict(p); | |
1204 | if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) { | |
1205 | p->state = S_OPENFLOW; | |
1206 | } | |
1207 | break; | |
1208 | ||
7ee20df1 BP |
1209 | case S_FLUSH: |
1210 | connmgr_run(p->connmgr, NULL); | |
1211 | ofproto_flush__(p); | |
1212 | if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) { | |
1213 | connmgr_flushed(p->connmgr); | |
1214 | p->state = S_OPENFLOW; | |
1215 | } | |
1216 | break; | |
1217 | ||
1218 | default: | |
1219 | NOT_REACHED(); | |
1220 | } | |
064af421 | 1221 | |
a5b8d268 BP |
1222 | if (time_msec() >= p->next_op_report) { |
1223 | long long int ago = (time_msec() - p->first_op) / 1000; | |
1224 | long long int interval = (p->last_op - p->first_op) / 1000; | |
1225 | struct ds s; | |
1226 | ||
1227 | ds_init(&s); | |
1228 | ds_put_format(&s, "%d flow_mods ", | |
1229 | p->n_add + p->n_delete + p->n_modify); | |
1230 | if (interval == ago) { | |
1231 | ds_put_format(&s, "in the last %lld s", ago); | |
1232 | } else if (interval) { | |
1233 | ds_put_format(&s, "in the %lld s starting %lld s ago", | |
1234 | interval, ago); | |
1235 | } else { | |
1236 | ds_put_format(&s, "%lld s ago", ago); | |
1237 | } | |
1238 | ||
1239 | ds_put_cstr(&s, " ("); | |
1240 | if (p->n_add) { | |
1241 | ds_put_format(&s, "%d adds, ", p->n_add); | |
1242 | } | |
1243 | if (p->n_delete) { | |
1244 | ds_put_format(&s, "%d deletes, ", p->n_delete); | |
1245 | } | |
1246 | if (p->n_modify) { | |
1247 | ds_put_format(&s, "%d modifications, ", p->n_modify); | |
1248 | } | |
1249 | s.length -= 2; | |
1250 | ds_put_char(&s, ')'); | |
1251 | ||
fbfa2911 | 1252 | VLOG_INFO("%s: %s", p->name, ds_cstr(&s)); |
a5b8d268 BP |
1253 | ds_destroy(&s); |
1254 | ||
1255 | p->n_add = p->n_delete = p->n_modify = 0; | |
1256 | p->next_op_report = LLONG_MAX; | |
1257 | } | |
1258 | ||
5fcc0d00 BP |
1259 | return error; |
1260 | } | |
1261 | ||
1262 | /* Performs periodic activity required by 'ofproto' that needs to be done | |
1263 | * with the least possible latency. | |
1264 | * | |
1265 | * It makes sense to call this function a couple of times per poll loop, to | |
1266 | * provide a significant performance boost on some benchmarks with the | |
1267 | * ofproto-dpif implementation. */ | |
1268 | int | |
1269 | ofproto_run_fast(struct ofproto *p) | |
1270 | { | |
1271 | int error; | |
1272 | ||
1273 | error = p->ofproto_class->run_fast ? p->ofproto_class->run_fast(p) : 0; | |
1274 | if (error && error != EAGAIN) { | |
1275 | VLOG_ERR_RL(&rl, "%s: fastpath run failed (%s)", | |
1276 | p->name, strerror(error)); | |
1277 | } | |
1278 | return error; | |
064af421 BP |
1279 | } |
1280 | ||
1281 | void | |
1282 | ofproto_wait(struct ofproto *p) | |
1283 | { | |
031d8bff EJ |
1284 | struct ofport *ofport; |
1285 | ||
abe529af | 1286 | p->ofproto_class->wait(p); |
5bf0e941 BP |
1287 | if (p->ofproto_class->port_poll_wait) { |
1288 | p->ofproto_class->port_poll_wait(p); | |
e7934396 | 1289 | } |
031d8bff EJ |
1290 | |
1291 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
1292 | if (ofport->change_seq != netdev_change_seq(ofport->netdev)) { | |
1293 | poll_immediate_wake(); | |
1294 | } | |
1295 | } | |
7ee20df1 BP |
1296 | |
1297 | switch (p->state) { | |
1298 | case S_OPENFLOW: | |
1299 | connmgr_wait(p->connmgr, true); | |
1300 | break; | |
1301 | ||
254750ce | 1302 | case S_EVICT: |
7ee20df1 BP |
1303 | case S_FLUSH: |
1304 | connmgr_wait(p->connmgr, false); | |
1305 | if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) { | |
1306 | poll_immediate_wake(); | |
1307 | } | |
1308 | break; | |
1309 | } | |
064af421 BP |
1310 | } |
1311 | ||
064af421 BP |
1312 | bool |
1313 | ofproto_is_alive(const struct ofproto *p) | |
1314 | { | |
19a87e36 | 1315 | return connmgr_has_controllers(p->connmgr); |
064af421 BP |
1316 | } |
1317 | ||
0d085684 BP |
1318 | /* Adds some memory usage statistics for 'ofproto' into 'usage', for use with |
1319 | * memory_report(). */ | |
1320 | void | |
1321 | ofproto_get_memory_usage(const struct ofproto *ofproto, struct simap *usage) | |
1322 | { | |
1323 | const struct oftable *table; | |
1324 | unsigned int n_rules; | |
1325 | ||
1326 | simap_increase(usage, "ports", hmap_count(&ofproto->ports)); | |
1327 | simap_increase(usage, "ops", | |
1328 | ofproto->n_pending + hmap_count(&ofproto->deletions)); | |
1329 | ||
1330 | n_rules = 0; | |
1331 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
1332 | n_rules += classifier_count(&table->cls); | |
1333 | } | |
1334 | simap_increase(usage, "rules", n_rules); | |
1335 | ||
1336 | if (ofproto->ofproto_class->get_memory_usage) { | |
1337 | ofproto->ofproto_class->get_memory_usage(ofproto, usage); | |
1338 | } | |
1339 | ||
1340 | connmgr_get_memory_usage(ofproto->connmgr, usage); | |
1341 | } | |
1342 | ||
bffc0589 | 1343 | void |
2cdcb898 | 1344 | ofproto_get_ofproto_controller_info(const struct ofproto *ofproto, |
bffc0589 AE |
1345 | struct shash *info) |
1346 | { | |
19a87e36 | 1347 | connmgr_get_controller_info(ofproto->connmgr, info); |
bffc0589 AE |
1348 | } |
1349 | ||
1350 | void | |
1351 | ofproto_free_ofproto_controller_info(struct shash *info) | |
1352 | { | |
72ba2ed3 | 1353 | connmgr_free_controller_info(info); |
bffc0589 AE |
1354 | } |
1355 | ||
b5827b24 BP |
1356 | /* Makes a deep copy of 'old' into 'port'. */ |
1357 | void | |
1358 | ofproto_port_clone(struct ofproto_port *port, const struct ofproto_port *old) | |
1359 | { | |
1360 | port->name = xstrdup(old->name); | |
1361 | port->type = xstrdup(old->type); | |
1362 | port->ofp_port = old->ofp_port; | |
1363 | } | |
1364 | ||
1365 | /* Frees memory allocated to members of 'ofproto_port'. | |
3a6ccc8c | 1366 | * |
b5827b24 BP |
1367 | * Do not call this function on an ofproto_port obtained from |
1368 | * ofproto_port_dump_next(): that function retains ownership of the data in the | |
1369 | * ofproto_port. */ | |
1370 | void | |
1371 | ofproto_port_destroy(struct ofproto_port *ofproto_port) | |
1372 | { | |
1373 | free(ofproto_port->name); | |
1374 | free(ofproto_port->type); | |
1375 | } | |
1376 | ||
b5827b24 | 1377 | /* Initializes 'dump' to begin dumping the ports in an ofproto. |
3a6ccc8c | 1378 | * |
b5827b24 BP |
1379 | * This function provides no status indication. An error status for the entire |
1380 | * dump operation is provided when it is completed by calling | |
1381 | * ofproto_port_dump_done(). | |
1382 | */ | |
1383 | void | |
1384 | ofproto_port_dump_start(struct ofproto_port_dump *dump, | |
1385 | const struct ofproto *ofproto) | |
1386 | { | |
abe529af BP |
1387 | dump->ofproto = ofproto; |
1388 | dump->error = ofproto->ofproto_class->port_dump_start(ofproto, | |
1389 | &dump->state); | |
b5827b24 BP |
1390 | } |
1391 | ||
1392 | /* Attempts to retrieve another port from 'dump', which must have been created | |
1393 | * with ofproto_port_dump_start(). On success, stores a new ofproto_port into | |
1394 | * 'port' and returns true. On failure, returns false. | |
1395 | * | |
1396 | * Failure might indicate an actual error or merely that the last port has been | |
1397 | * dumped. An error status for the entire dump operation is provided when it | |
1398 | * is completed by calling ofproto_port_dump_done(). | |
1399 | * | |
1400 | * The ofproto owns the data stored in 'port'. It will remain valid until at | |
1401 | * least the next time 'dump' is passed to ofproto_port_dump_next() or | |
1402 | * ofproto_port_dump_done(). */ | |
1403 | bool | |
1404 | ofproto_port_dump_next(struct ofproto_port_dump *dump, | |
1405 | struct ofproto_port *port) | |
1406 | { | |
abe529af BP |
1407 | const struct ofproto *ofproto = dump->ofproto; |
1408 | ||
1409 | if (dump->error) { | |
1410 | return false; | |
1411 | } | |
b5827b24 | 1412 | |
abe529af BP |
1413 | dump->error = ofproto->ofproto_class->port_dump_next(ofproto, dump->state, |
1414 | port); | |
1415 | if (dump->error) { | |
1416 | ofproto->ofproto_class->port_dump_done(ofproto, dump->state); | |
1417 | return false; | |
b5827b24 | 1418 | } |
abe529af | 1419 | return true; |
b5827b24 BP |
1420 | } |
1421 | ||
1422 | /* Completes port table dump operation 'dump', which must have been created | |
1423 | * with ofproto_port_dump_start(). Returns 0 if the dump operation was | |
1424 | * error-free, otherwise a positive errno value describing the problem. */ | |
3a6ccc8c | 1425 | int |
b5827b24 | 1426 | ofproto_port_dump_done(struct ofproto_port_dump *dump) |
3a6ccc8c | 1427 | { |
abe529af BP |
1428 | const struct ofproto *ofproto = dump->ofproto; |
1429 | if (!dump->error) { | |
1430 | dump->error = ofproto->ofproto_class->port_dump_done(ofproto, | |
1431 | dump->state); | |
1432 | } | |
1433 | return dump->error == EOF ? 0 : dump->error; | |
b5827b24 BP |
1434 | } |
1435 | ||
0aeaabc8 JP |
1436 | /* Returns the type to pass to netdev_open() when a datapath of type |
1437 | * 'datapath_type' has a port of type 'port_type', for a few special | |
1438 | * cases when a netdev type differs from a port type. For example, when | |
1439 | * using the userspace datapath, a port of type "internal" needs to be | |
1440 | * opened as "tap". | |
1441 | * | |
1442 | * Returns either 'type' itself or a string literal, which must not be | |
1443 | * freed. */ | |
1444 | const char * | |
1445 | ofproto_port_open_type(const char *datapath_type, const char *port_type) | |
1446 | { | |
1447 | const struct ofproto_class *class; | |
1448 | ||
1449 | datapath_type = ofproto_normalize_type(datapath_type); | |
1450 | class = ofproto_class_find__(datapath_type); | |
1451 | if (!class) { | |
1452 | return port_type; | |
1453 | } | |
1454 | ||
1455 | return (class->port_open_type | |
1456 | ? class->port_open_type(datapath_type, port_type) | |
1457 | : port_type); | |
1458 | } | |
1459 | ||
81816a5f JP |
1460 | /* Attempts to add 'netdev' as a port on 'ofproto'. If 'ofp_portp' is |
1461 | * non-null and '*ofp_portp' is not OFPP_NONE, attempts to use that as | |
1462 | * the port's OpenFlow port number. | |
1463 | * | |
1464 | * If successful, returns 0 and sets '*ofp_portp' to the new port's | |
1465 | * OpenFlow port number (if 'ofp_portp' is non-null). On failure, | |
1466 | * returns a positive errno value and sets '*ofp_portp' to OFPP_NONE (if | |
1467 | * 'ofp_portp' is non-null). */ | |
b5827b24 BP |
1468 | int |
1469 | ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev, | |
1470 | uint16_t *ofp_portp) | |
1471 | { | |
81816a5f | 1472 | uint16_t ofp_port = ofp_portp ? *ofp_portp : OFPP_NONE; |
3a6ccc8c BP |
1473 | int error; |
1474 | ||
e1b1d06a | 1475 | error = ofproto->ofproto_class->port_add(ofproto, netdev); |
1fa24dea | 1476 | if (!error) { |
e1b1d06a JP |
1477 | const char *netdev_name = netdev_get_name(netdev); |
1478 | ||
1479 | simap_put(&ofproto->ofp_requests, netdev_name, ofp_port); | |
1480 | update_port(ofproto, netdev_name); | |
1fa24dea | 1481 | } |
b5827b24 | 1482 | if (ofp_portp) { |
e1b1d06a JP |
1483 | struct ofproto_port ofproto_port; |
1484 | ||
1485 | ofproto_port_query_by_name(ofproto, netdev_get_name(netdev), | |
1486 | &ofproto_port); | |
1487 | *ofp_portp = error ? OFPP_NONE : ofproto_port.ofp_port; | |
1488 | ofproto_port_destroy(&ofproto_port); | |
3a6ccc8c BP |
1489 | } |
1490 | return error; | |
1491 | } | |
1492 | ||
b5827b24 BP |
1493 | /* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and |
1494 | * initializes '*port' appropriately; on failure, returns a positive errno | |
1495 | * value. | |
1496 | * | |
abe529af | 1497 | * The caller owns the data in 'ofproto_port' and must free it with |
b5827b24 BP |
1498 | * ofproto_port_destroy() when it is no longer needed. */ |
1499 | int | |
1500 | ofproto_port_query_by_name(const struct ofproto *ofproto, const char *devname, | |
1501 | struct ofproto_port *port) | |
a4e2e1f2 | 1502 | { |
b5827b24 BP |
1503 | int error; |
1504 | ||
abe529af BP |
1505 | error = ofproto->ofproto_class->port_query_by_name(ofproto, devname, port); |
1506 | if (error) { | |
1507 | memset(port, 0, sizeof *port); | |
b5827b24 BP |
1508 | } |
1509 | return error; | |
a4e2e1f2 EJ |
1510 | } |
1511 | ||
b5827b24 | 1512 | /* Deletes port number 'ofp_port' from the datapath for 'ofproto'. |
3a6ccc8c | 1513 | * Returns 0 if successful, otherwise a positive errno. */ |
064af421 | 1514 | int |
b5827b24 | 1515 | ofproto_port_del(struct ofproto *ofproto, uint16_t ofp_port) |
064af421 | 1516 | { |
abe529af | 1517 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1264ec95 | 1518 | const char *name = ofport ? netdev_get_name(ofport->netdev) : "<unknown>"; |
e1b1d06a | 1519 | struct simap_node *ofp_request_node; |
3cf10406 | 1520 | int error; |
cdee00fd | 1521 | |
e1b1d06a JP |
1522 | ofp_request_node = simap_find(&ofproto->ofp_requests, name); |
1523 | if (ofp_request_node) { | |
1524 | simap_delete(&ofproto->ofp_requests, ofp_request_node); | |
1525 | } | |
1526 | ||
abe529af | 1527 | error = ofproto->ofproto_class->port_del(ofproto, ofp_port); |
892815f5 | 1528 | if (!error && ofport) { |
1264ec95 BP |
1529 | /* 'name' is the netdev's name and update_port() is going to close the |
1530 | * netdev. Just in case update_port() refers to 'name' after it | |
3a6ccc8c BP |
1531 | * destroys 'ofport', make a copy of it around the update_port() |
1532 | * call. */ | |
1533 | char *devname = xstrdup(name); | |
1534 | update_port(ofproto, devname); | |
1535 | free(devname); | |
3cf10406 BP |
1536 | } |
1537 | return error; | |
064af421 BP |
1538 | } |
1539 | ||
6c1491fb | 1540 | /* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and |
fa8b054f BP |
1541 | * performs the 'n_actions' actions in 'actions'. The new flow will not |
1542 | * timeout. | |
1543 | * | |
1544 | * If cls_rule->priority is in the range of priorities supported by OpenFlow | |
1545 | * (0...65535, inclusive) then the flow will be visible to OpenFlow | |
1546 | * controllers; otherwise, it will be hidden. | |
1547 | * | |
f25d0cf3 | 1548 | * The caller retains ownership of 'cls_rule' and 'ofpacts'. |
6c1491fb BP |
1549 | * |
1550 | * This is a helper function for in-band control and fail-open. */ | |
064af421 | 1551 | void |
81a76618 BP |
1552 | ofproto_add_flow(struct ofproto *ofproto, const struct match *match, |
1553 | unsigned int priority, | |
f25d0cf3 | 1554 | const struct ofpact *ofpacts, size_t ofpacts_len) |
064af421 | 1555 | { |
7ee20df1 BP |
1556 | const struct rule *rule; |
1557 | ||
81a76618 BP |
1558 | rule = rule_from_cls_rule(classifier_find_match_exactly( |
1559 | &ofproto->tables[0].cls, match, priority)); | |
f25d0cf3 BP |
1560 | if (!rule || !ofpacts_equal(rule->ofpacts, rule->ofpacts_len, |
1561 | ofpacts, ofpacts_len)) { | |
a9a2da38 | 1562 | struct ofputil_flow_mod fm; |
7ee20df1 BP |
1563 | |
1564 | memset(&fm, 0, sizeof fm); | |
81a76618 BP |
1565 | fm.match = *match; |
1566 | fm.priority = priority; | |
7ee20df1 | 1567 | fm.buffer_id = UINT32_MAX; |
f25d0cf3 BP |
1568 | fm.ofpacts = xmemdup(ofpacts, ofpacts_len); |
1569 | fm.ofpacts_len = ofpacts_len; | |
7ee20df1 | 1570 | add_flow(ofproto, NULL, &fm, NULL); |
f25d0cf3 | 1571 | free(fm.ofpacts); |
7ee20df1 | 1572 | } |
064af421 BP |
1573 | } |
1574 | ||
75a75043 | 1575 | /* Executes the flow modification specified in 'fm'. Returns 0 on success, an |
90bf1e07 BP |
1576 | * OFPERR_* OpenFlow error code on failure, or OFPROTO_POSTPONE if the |
1577 | * operation cannot be initiated now but may be retried later. | |
75a75043 BP |
1578 | * |
1579 | * This is a helper function for in-band control and fail-open. */ | |
1580 | int | |
1581 | ofproto_flow_mod(struct ofproto *ofproto, const struct ofputil_flow_mod *fm) | |
1582 | { | |
1583 | return handle_flow_mod__(ofproto, NULL, fm, NULL); | |
1584 | } | |
1585 | ||
6c1491fb BP |
1586 | /* Searches for a rule with matching criteria exactly equal to 'target' in |
1587 | * ofproto's table 0 and, if it finds one, deletes it. | |
1588 | * | |
1589 | * This is a helper function for in-band control and fail-open. */ | |
7ee20df1 | 1590 | bool |
81a76618 BP |
1591 | ofproto_delete_flow(struct ofproto *ofproto, |
1592 | const struct match *target, unsigned int priority) | |
064af421 BP |
1593 | { |
1594 | struct rule *rule; | |
1595 | ||
81a76618 BP |
1596 | rule = rule_from_cls_rule(classifier_find_match_exactly( |
1597 | &ofproto->tables[0].cls, target, priority)); | |
7ee20df1 BP |
1598 | if (!rule) { |
1599 | /* No such rule -> success. */ | |
1600 | return true; | |
1601 | } else if (rule->pending) { | |
1602 | /* An operation on the rule is already pending -> failure. | |
1603 | * Caller must retry later if it's important. */ | |
1604 | return false; | |
1605 | } else { | |
1606 | /* Initiate deletion -> success. */ | |
7024dffe | 1607 | struct ofopgroup *group = ofopgroup_create_unattached(ofproto); |
2b07c8b1 | 1608 | ofoperation_create(group, rule, OFOPERATION_DELETE, OFPRR_DELETE); |
d0918789 | 1609 | oftable_remove_rule(rule); |
254750ce | 1610 | ofproto->ofproto_class->rule_destruct(rule); |
7ee20df1 BP |
1611 | ofopgroup_submit(group); |
1612 | return true; | |
bcf84111 | 1613 | } |
5ecc9d81 | 1614 | |
142e1f5c BP |
1615 | } |
1616 | ||
7ee20df1 BP |
1617 | /* Starts the process of deleting all of the flows from all of ofproto's flow |
1618 | * tables and then reintroducing the flows required by in-band control and | |
1619 | * fail-open. The process will complete in a later call to ofproto_run(). */ | |
142e1f5c BP |
1620 | void |
1621 | ofproto_flush_flows(struct ofproto *ofproto) | |
1622 | { | |
7ee20df1 BP |
1623 | COVERAGE_INC(ofproto_flush); |
1624 | ofproto->state = S_FLUSH; | |
064af421 BP |
1625 | } |
1626 | \f | |
1627 | static void | |
1628 | reinit_ports(struct ofproto *p) | |
1629 | { | |
abe529af | 1630 | struct ofproto_port_dump dump; |
b3c01ed3 | 1631 | struct sset devnames; |
064af421 | 1632 | struct ofport *ofport; |
abe529af | 1633 | struct ofproto_port ofproto_port; |
b3c01ed3 | 1634 | const char *devname; |
064af421 | 1635 | |
898bf89d JP |
1636 | COVERAGE_INC(ofproto_reinit_ports); |
1637 | ||
b3c01ed3 | 1638 | sset_init(&devnames); |
4e8e4213 | 1639 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { |
1264ec95 | 1640 | sset_add(&devnames, netdev_get_name(ofport->netdev)); |
064af421 | 1641 | } |
abe529af BP |
1642 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { |
1643 | sset_add(&devnames, ofproto_port.name); | |
064af421 | 1644 | } |
064af421 | 1645 | |
b3c01ed3 BP |
1646 | SSET_FOR_EACH (devname, &devnames) { |
1647 | update_port(p, devname); | |
064af421 | 1648 | } |
b3c01ed3 | 1649 | sset_destroy(&devnames); |
064af421 BP |
1650 | } |
1651 | ||
e1b1d06a JP |
1652 | static uint16_t |
1653 | alloc_ofp_port(struct ofproto *ofproto, const char *netdev_name) | |
1654 | { | |
1655 | uint16_t ofp_port; | |
1656 | ||
1657 | ofp_port = simap_get(&ofproto->ofp_requests, netdev_name); | |
1658 | ofp_port = ofp_port ? ofp_port : OFPP_NONE; | |
1659 | ||
1660 | if (ofp_port >= ofproto->max_ports | |
1661 | || bitmap_is_set(ofproto->ofp_port_ids, ofp_port)) { | |
1662 | bool retry = ofproto->alloc_port_no ? true : false; | |
1663 | ||
1664 | /* Search for a free OpenFlow port number. We try not to | |
1665 | * immediately reuse them to prevent problems due to old | |
1666 | * flows. */ | |
1667 | while (ofp_port >= ofproto->max_ports) { | |
1668 | for (ofproto->alloc_port_no++; | |
4780f137 GS |
1669 | ofproto->alloc_port_no < ofproto->max_ports; |
1670 | ofproto->alloc_port_no++) { | |
e1b1d06a JP |
1671 | if (!bitmap_is_set(ofproto->ofp_port_ids, |
1672 | ofproto->alloc_port_no)) { | |
1673 | ofp_port = ofproto->alloc_port_no; | |
1674 | break; | |
1675 | } | |
1676 | } | |
1677 | if (ofproto->alloc_port_no >= ofproto->max_ports) { | |
1678 | if (retry) { | |
1679 | ofproto->alloc_port_no = 0; | |
1680 | retry = false; | |
1681 | } else { | |
1682 | return OFPP_NONE; | |
1683 | } | |
1684 | } | |
1685 | } | |
1686 | } | |
1687 | ||
1688 | bitmap_set1(ofproto->ofp_port_ids, ofp_port); | |
1689 | return ofp_port; | |
1690 | } | |
1691 | ||
1692 | static void | |
1693 | dealloc_ofp_port(const struct ofproto *ofproto, uint16_t ofp_port) | |
1694 | { | |
1695 | bitmap_set0(ofproto->ofp_port_ids, ofp_port); | |
1696 | } | |
1697 | ||
fbfa2911 BP |
1698 | /* Opens and returns a netdev for 'ofproto_port' in 'ofproto', or a null |
1699 | * pointer if the netdev cannot be opened. On success, also fills in | |
1700 | * 'opp'. */ | |
b33951b8 | 1701 | static struct netdev * |
e1b1d06a JP |
1702 | ofport_open(struct ofproto *ofproto, |
1703 | struct ofproto_port *ofproto_port, | |
9e1fd49b | 1704 | struct ofputil_phy_port *pp) |
064af421 BP |
1705 | { |
1706 | enum netdev_flags flags; | |
064af421 | 1707 | struct netdev *netdev; |
064af421 BP |
1708 | int error; |
1709 | ||
18812dff | 1710 | error = netdev_open(ofproto_port->name, ofproto_port->type, &netdev); |
064af421 | 1711 | if (error) { |
fbfa2911 | 1712 | VLOG_WARN_RL(&rl, "%s: ignoring port %s (%"PRIu16") because netdev %s " |
064af421 | 1713 | "cannot be opened (%s)", |
fbfa2911 | 1714 | ofproto->name, |
abe529af BP |
1715 | ofproto_port->name, ofproto_port->ofp_port, |
1716 | ofproto_port->name, strerror(error)); | |
064af421 BP |
1717 | return NULL; |
1718 | } | |
1719 | ||
e1b1d06a JP |
1720 | if (ofproto_port->ofp_port == OFPP_NONE) { |
1721 | if (!strcmp(ofproto->name, ofproto_port->name)) { | |
1722 | ofproto_port->ofp_port = OFPP_LOCAL; | |
1723 | } else { | |
1724 | ofproto_port->ofp_port = alloc_ofp_port(ofproto, | |
1725 | ofproto_port->name); | |
1726 | } | |
1727 | } | |
9e1fd49b BP |
1728 | pp->port_no = ofproto_port->ofp_port; |
1729 | netdev_get_etheraddr(netdev, pp->hw_addr); | |
1730 | ovs_strlcpy(pp->name, ofproto_port->name, sizeof pp->name); | |
064af421 | 1731 | netdev_get_flags(netdev, &flags); |
9e1fd49b BP |
1732 | pp->config = flags & NETDEV_UP ? 0 : OFPUTIL_PC_PORT_DOWN; |
1733 | pp->state = netdev_get_carrier(netdev) ? 0 : OFPUTIL_PS_LINK_DOWN; | |
1734 | netdev_get_features(netdev, &pp->curr, &pp->advertised, | |
1735 | &pp->supported, &pp->peer); | |
d02a5f8e BP |
1736 | pp->curr_speed = netdev_features_to_bps(pp->curr, 0); |
1737 | pp->max_speed = netdev_features_to_bps(pp->supported, 0); | |
118c4676 | 1738 | |
b33951b8 | 1739 | return netdev; |
064af421 BP |
1740 | } |
1741 | ||
b33951b8 | 1742 | /* Returns true if most fields of 'a' and 'b' are equal. Differences in name, |
9e1fd49b | 1743 | * port number, and 'config' bits other than OFPUTIL_PS_LINK_DOWN are |
b33951b8 BP |
1744 | * disregarded. */ |
1745 | static bool | |
9e1fd49b BP |
1746 | ofport_equal(const struct ofputil_phy_port *a, |
1747 | const struct ofputil_phy_port *b) | |
064af421 | 1748 | { |
9e1fd49b | 1749 | return (eth_addr_equals(a->hw_addr, b->hw_addr) |
064af421 | 1750 | && a->state == b->state |
9e1fd49b | 1751 | && !((a->config ^ b->config) & OFPUTIL_PC_PORT_DOWN) |
064af421 BP |
1752 | && a->curr == b->curr |
1753 | && a->advertised == b->advertised | |
1754 | && a->supported == b->supported | |
9e1fd49b BP |
1755 | && a->peer == b->peer |
1756 | && a->curr_speed == b->curr_speed | |
1757 | && a->max_speed == b->max_speed); | |
064af421 BP |
1758 | } |
1759 | ||
b33951b8 BP |
1760 | /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'. |
1761 | * The caller must ensure that 'p' does not have a conflicting ofport (that is, | |
1762 | * one with the same name or port number). */ | |
064af421 | 1763 | static void |
b33951b8 | 1764 | ofport_install(struct ofproto *p, |
9e1fd49b | 1765 | struct netdev *netdev, const struct ofputil_phy_port *pp) |
064af421 | 1766 | { |
b33951b8 BP |
1767 | const char *netdev_name = netdev_get_name(netdev); |
1768 | struct ofport *ofport; | |
abe529af | 1769 | int error; |
72b06300 | 1770 | |
b33951b8 | 1771 | /* Create ofport. */ |
abe529af BP |
1772 | ofport = p->ofproto_class->port_alloc(); |
1773 | if (!ofport) { | |
1774 | error = ENOMEM; | |
1775 | goto error; | |
1776 | } | |
0f7d71a5 | 1777 | ofport->ofproto = p; |
b33951b8 | 1778 | ofport->netdev = netdev; |
031d8bff | 1779 | ofport->change_seq = netdev_change_seq(netdev); |
9e1fd49b BP |
1780 | ofport->pp = *pp; |
1781 | ofport->ofp_port = pp->port_no; | |
b33951b8 BP |
1782 | |
1783 | /* Add port to 'p'. */ | |
abe529af | 1784 | hmap_insert(&p->ports, &ofport->hmap_node, hash_int(ofport->ofp_port, 0)); |
72b06300 | 1785 | shash_add(&p->port_by_name, netdev_name, ofport); |
abe529af | 1786 | |
ada3428f | 1787 | update_mtu(p, ofport); |
9197df76 | 1788 | |
abe529af BP |
1789 | /* Let the ofproto_class initialize its private data. */ |
1790 | error = p->ofproto_class->port_construct(ofport); | |
1791 | if (error) { | |
1792 | goto error; | |
1793 | } | |
9e1fd49b | 1794 | connmgr_send_port_status(p->connmgr, pp, OFPPR_ADD); |
abe529af BP |
1795 | return; |
1796 | ||
1797 | error: | |
1798 | VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)", | |
1799 | p->name, netdev_name, strerror(error)); | |
1800 | if (ofport) { | |
1801 | ofport_destroy__(ofport); | |
1802 | } else { | |
1803 | netdev_close(netdev); | |
72b06300 | 1804 | } |
064af421 BP |
1805 | } |
1806 | ||
b33951b8 | 1807 | /* Removes 'ofport' from 'p' and destroys it. */ |
064af421 | 1808 | static void |
0f7d71a5 | 1809 | ofport_remove(struct ofport *ofport) |
064af421 | 1810 | { |
9e1fd49b | 1811 | connmgr_send_port_status(ofport->ofproto->connmgr, &ofport->pp, |
fa066f01 | 1812 | OFPPR_DELETE); |
abe529af | 1813 | ofport_destroy(ofport); |
b33951b8 BP |
1814 | } |
1815 | ||
1816 | /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and | |
1817 | * destroys it. */ | |
1818 | static void | |
1819 | ofport_remove_with_name(struct ofproto *ofproto, const char *name) | |
1820 | { | |
1821 | struct ofport *port = shash_find_data(&ofproto->port_by_name, name); | |
1822 | if (port) { | |
0f7d71a5 | 1823 | ofport_remove(port); |
b33951b8 BP |
1824 | } |
1825 | } | |
1826 | ||
9e1fd49b | 1827 | /* Updates 'port' with new 'pp' description. |
b33951b8 BP |
1828 | * |
1829 | * Does not handle a name or port number change. The caller must implement | |
1830 | * such a change as a delete followed by an add. */ | |
1831 | static void | |
9e1fd49b | 1832 | ofport_modified(struct ofport *port, struct ofputil_phy_port *pp) |
b33951b8 | 1833 | { |
9e1fd49b BP |
1834 | memcpy(port->pp.hw_addr, pp->hw_addr, ETH_ADDR_LEN); |
1835 | port->pp.config = ((port->pp.config & ~OFPUTIL_PC_PORT_DOWN) | |
1836 | | (pp->config & OFPUTIL_PC_PORT_DOWN)); | |
1837 | port->pp.state = pp->state; | |
1838 | port->pp.curr = pp->curr; | |
1839 | port->pp.advertised = pp->advertised; | |
1840 | port->pp.supported = pp->supported; | |
1841 | port->pp.peer = pp->peer; | |
1842 | port->pp.curr_speed = pp->curr_speed; | |
1843 | port->pp.max_speed = pp->max_speed; | |
b33951b8 | 1844 | |
9e1fd49b | 1845 | connmgr_send_port_status(port->ofproto->connmgr, &port->pp, OFPPR_MODIFY); |
064af421 BP |
1846 | } |
1847 | ||
5a2dfd47 JP |
1848 | /* Update OpenFlow 'state' in 'port' and notify controller. */ |
1849 | void | |
9e1fd49b | 1850 | ofproto_port_set_state(struct ofport *port, enum ofputil_port_state state) |
5a2dfd47 | 1851 | { |
9e1fd49b BP |
1852 | if (port->pp.state != state) { |
1853 | port->pp.state = state; | |
1854 | connmgr_send_port_status(port->ofproto->connmgr, &port->pp, | |
5a2dfd47 JP |
1855 | OFPPR_MODIFY); |
1856 | } | |
1857 | } | |
1858 | ||
abe529af BP |
1859 | void |
1860 | ofproto_port_unregister(struct ofproto *ofproto, uint16_t ofp_port) | |
e7934396 | 1861 | { |
abe529af BP |
1862 | struct ofport *port = ofproto_get_port(ofproto, ofp_port); |
1863 | if (port) { | |
52a90c29 BP |
1864 | if (port->ofproto->ofproto_class->set_realdev) { |
1865 | port->ofproto->ofproto_class->set_realdev(port, 0, 0); | |
1866 | } | |
b308140a JP |
1867 | if (port->ofproto->ofproto_class->set_stp_port) { |
1868 | port->ofproto->ofproto_class->set_stp_port(port, NULL); | |
1869 | } | |
abe529af | 1870 | if (port->ofproto->ofproto_class->set_cfm) { |
a5610457 | 1871 | port->ofproto->ofproto_class->set_cfm(port, NULL); |
abe529af BP |
1872 | } |
1873 | if (port->ofproto->ofproto_class->bundle_remove) { | |
1874 | port->ofproto->ofproto_class->bundle_remove(port); | |
e7934396 BP |
1875 | } |
1876 | } | |
1877 | } | |
1878 | ||
1879 | static void | |
abe529af | 1880 | ofport_destroy__(struct ofport *port) |
e7934396 | 1881 | { |
abe529af BP |
1882 | struct ofproto *ofproto = port->ofproto; |
1883 | const char *name = netdev_get_name(port->netdev); | |
fa066f01 | 1884 | |
abe529af BP |
1885 | hmap_remove(&ofproto->ports, &port->hmap_node); |
1886 | shash_delete(&ofproto->port_by_name, | |
1887 | shash_find(&ofproto->port_by_name, name)); | |
fa066f01 | 1888 | |
abe529af BP |
1889 | netdev_close(port->netdev); |
1890 | ofproto->ofproto_class->port_dealloc(port); | |
e7934396 BP |
1891 | } |
1892 | ||
064af421 | 1893 | static void |
abe529af | 1894 | ofport_destroy(struct ofport *port) |
064af421 | 1895 | { |
fa066f01 | 1896 | if (port) { |
e1b1d06a | 1897 | dealloc_ofp_port(port->ofproto, port->ofp_port); |
abe529af BP |
1898 | port->ofproto->ofproto_class->port_destruct(port); |
1899 | ofport_destroy__(port); | |
1900 | } | |
064af421 BP |
1901 | } |
1902 | ||
abe529af BP |
1903 | struct ofport * |
1904 | ofproto_get_port(const struct ofproto *ofproto, uint16_t ofp_port) | |
ca0f572c BP |
1905 | { |
1906 | struct ofport *port; | |
1907 | ||
4e8e4213 | 1908 | HMAP_FOR_EACH_IN_BUCKET (port, hmap_node, |
abe529af BP |
1909 | hash_int(ofp_port, 0), &ofproto->ports) { |
1910 | if (port->ofp_port == ofp_port) { | |
ca0f572c BP |
1911 | return port; |
1912 | } | |
1913 | } | |
1914 | return NULL; | |
1915 | } | |
1916 | ||
6527c598 PS |
1917 | int |
1918 | ofproto_port_get_stats(const struct ofport *port, struct netdev_stats *stats) | |
1919 | { | |
1920 | struct ofproto *ofproto = port->ofproto; | |
1921 | int error; | |
1922 | ||
1923 | if (ofproto->ofproto_class->port_get_stats) { | |
1924 | error = ofproto->ofproto_class->port_get_stats(port, stats); | |
1925 | } else { | |
1926 | error = EOPNOTSUPP; | |
1927 | } | |
1928 | ||
1929 | return error; | |
1930 | } | |
1931 | ||
064af421 | 1932 | static void |
b33951b8 | 1933 | update_port(struct ofproto *ofproto, const char *name) |
064af421 | 1934 | { |
abe529af | 1935 | struct ofproto_port ofproto_port; |
9e1fd49b | 1936 | struct ofputil_phy_port pp; |
b33951b8 BP |
1937 | struct netdev *netdev; |
1938 | struct ofport *port; | |
064af421 BP |
1939 | |
1940 | COVERAGE_INC(ofproto_update_port); | |
c874dc6d | 1941 | |
b33951b8 | 1942 | /* Fetch 'name''s location and properties from the datapath. */ |
abe529af | 1943 | netdev = (!ofproto_port_query_by_name(ofproto, name, &ofproto_port) |
fbfa2911 | 1944 | ? ofport_open(ofproto, &ofproto_port, &pp) |
b33951b8 BP |
1945 | : NULL); |
1946 | if (netdev) { | |
abe529af | 1947 | port = ofproto_get_port(ofproto, ofproto_port.ofp_port); |
b33951b8 | 1948 | if (port && !strcmp(netdev_get_name(port->netdev), name)) { |
e65942a0 BP |
1949 | struct netdev *old_netdev = port->netdev; |
1950 | ||
b33951b8 | 1951 | /* 'name' hasn't changed location. Any properties changed? */ |
9e1fd49b BP |
1952 | if (!ofport_equal(&port->pp, &pp)) { |
1953 | ofport_modified(port, &pp); | |
abe529af BP |
1954 | } |
1955 | ||
ada3428f | 1956 | update_mtu(ofproto, port); |
9197df76 | 1957 | |
e65942a0 BP |
1958 | /* Install the newly opened netdev in case it has changed. |
1959 | * Don't close the old netdev yet in case port_modified has to | |
1960 | * remove a retained reference to it.*/ | |
abe529af | 1961 | port->netdev = netdev; |
031d8bff | 1962 | port->change_seq = netdev_change_seq(netdev); |
abe529af BP |
1963 | |
1964 | if (port->ofproto->ofproto_class->port_modified) { | |
1965 | port->ofproto->ofproto_class->port_modified(port); | |
b33951b8 | 1966 | } |
e65942a0 BP |
1967 | |
1968 | netdev_close(old_netdev); | |
b33951b8 BP |
1969 | } else { |
1970 | /* If 'port' is nonnull then its name differs from 'name' and thus | |
1971 | * we should delete it. If we think there's a port named 'name' | |
1972 | * then its port number must be wrong now so delete it too. */ | |
1973 | if (port) { | |
0f7d71a5 | 1974 | ofport_remove(port); |
b33951b8 BP |
1975 | } |
1976 | ofport_remove_with_name(ofproto, name); | |
9e1fd49b | 1977 | ofport_install(ofproto, netdev, &pp); |
c874dc6d | 1978 | } |
b33951b8 BP |
1979 | } else { |
1980 | /* Any port named 'name' is gone now. */ | |
1981 | ofport_remove_with_name(ofproto, name); | |
c874dc6d | 1982 | } |
abe529af | 1983 | ofproto_port_destroy(&ofproto_port); |
064af421 BP |
1984 | } |
1985 | ||
1986 | static int | |
1987 | init_ports(struct ofproto *p) | |
1988 | { | |
abe529af BP |
1989 | struct ofproto_port_dump dump; |
1990 | struct ofproto_port ofproto_port; | |
e1b1d06a | 1991 | struct shash_node *node, *next; |
abe529af BP |
1992 | |
1993 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { | |
e1b1d06a JP |
1994 | const char *name = ofproto_port.name; |
1995 | ||
1996 | if (shash_find(&p->port_by_name, name)) { | |
fbfa2911 | 1997 | VLOG_WARN_RL(&rl, "%s: ignoring duplicate device %s in datapath", |
e1b1d06a | 1998 | p->name, name); |
abe529af | 1999 | } else { |
9e1fd49b | 2000 | struct ofputil_phy_port pp; |
b33951b8 BP |
2001 | struct netdev *netdev; |
2002 | ||
e1b1d06a JP |
2003 | /* Check if an OpenFlow port number had been requested. */ |
2004 | node = shash_find(&init_ofp_ports, name); | |
2005 | if (node) { | |
2006 | const struct iface_hint *iface_hint = node->data; | |
2007 | simap_put(&p->ofp_requests, name, iface_hint->ofp_port); | |
2008 | } | |
2009 | ||
fbfa2911 | 2010 | netdev = ofport_open(p, &ofproto_port, &pp); |
b33951b8 | 2011 | if (netdev) { |
9e1fd49b | 2012 | ofport_install(p, netdev, &pp); |
064af421 BP |
2013 | } |
2014 | } | |
2015 | } | |
b0ec0f27 | 2016 | |
e1b1d06a JP |
2017 | SHASH_FOR_EACH_SAFE(node, next, &init_ofp_ports) { |
2018 | const struct iface_hint *iface_hint = node->data; | |
2019 | ||
2020 | if (!strcmp(iface_hint->br_name, p->name)) { | |
2021 | free(iface_hint->br_name); | |
2022 | free(iface_hint->br_type); | |
2023 | shash_delete(&init_ofp_ports, node); | |
2024 | } | |
2025 | } | |
2026 | ||
064af421 BP |
2027 | return 0; |
2028 | } | |
9197df76 JP |
2029 | |
2030 | /* Find the minimum MTU of all non-datapath devices attached to 'p'. | |
2031 | * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */ | |
2032 | static int | |
2033 | find_min_mtu(struct ofproto *p) | |
2034 | { | |
2035 | struct ofport *ofport; | |
2036 | int mtu = 0; | |
2037 | ||
2038 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2039 | struct netdev *netdev = ofport->netdev; | |
2040 | int dev_mtu; | |
2041 | ||
2042 | /* Skip any internal ports, since that's what we're trying to | |
2043 | * set. */ | |
2044 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
2045 | continue; | |
2046 | } | |
2047 | ||
2048 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2049 | continue; | |
2050 | } | |
2051 | if (!mtu || dev_mtu < mtu) { | |
2052 | mtu = dev_mtu; | |
2053 | } | |
2054 | } | |
2055 | ||
2056 | return mtu ? mtu: ETH_PAYLOAD_MAX; | |
2057 | } | |
2058 | ||
ada3428f PS |
2059 | /* Update MTU of all datapath devices on 'p' to the minimum of the |
2060 | * non-datapath ports in event of 'port' added or changed. */ | |
9197df76 | 2061 | static void |
ada3428f | 2062 | update_mtu(struct ofproto *p, struct ofport *port) |
9197df76 JP |
2063 | { |
2064 | struct ofport *ofport; | |
ada3428f PS |
2065 | struct netdev *netdev = port->netdev; |
2066 | int dev_mtu, old_min; | |
2067 | ||
2068 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2069 | port->mtu = 0; | |
2070 | return; | |
2071 | } | |
2072 | if (!strcmp(netdev_get_type(port->netdev), "internal")) { | |
2073 | if (dev_mtu > p->min_mtu) { | |
2074 | if (!netdev_set_mtu(port->netdev, p->min_mtu)) { | |
2075 | dev_mtu = p->min_mtu; | |
2076 | } | |
2077 | } | |
2078 | port->mtu = dev_mtu; | |
2079 | return; | |
2080 | } | |
2081 | ||
2082 | /* For non-internal port find new min mtu. */ | |
2083 | old_min = p->min_mtu; | |
2084 | port->mtu = dev_mtu; | |
2085 | p->min_mtu = find_min_mtu(p); | |
2086 | if (p->min_mtu == old_min) { | |
2087 | return; | |
2088 | } | |
9197df76 JP |
2089 | |
2090 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2091 | struct netdev *netdev = ofport->netdev; | |
2092 | ||
2093 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
ada3428f PS |
2094 | if (!netdev_set_mtu(netdev, p->min_mtu)) { |
2095 | ofport->mtu = p->min_mtu; | |
2096 | } | |
9197df76 JP |
2097 | } |
2098 | } | |
2099 | } | |
064af421 | 2100 | \f |
064af421 | 2101 | static void |
abe529af | 2102 | ofproto_rule_destroy__(struct rule *rule) |
064af421 | 2103 | { |
1eae3d33 | 2104 | if (rule) { |
48d28ac1 | 2105 | cls_rule_destroy(&rule->cr); |
f25d0cf3 | 2106 | free(rule->ofpacts); |
1eae3d33 BP |
2107 | rule->ofproto->ofproto_class->rule_dealloc(rule); |
2108 | } | |
064af421 BP |
2109 | } |
2110 | ||
7ee20df1 BP |
2111 | /* This function allows an ofproto implementation to destroy any rules that |
2112 | * remain when its ->destruct() function is called. The caller must have | |
2113 | * already uninitialized any derived members of 'rule' (step 5 described in the | |
5bee6e26 JP |
2114 | * large comment in ofproto/ofproto-provider.h titled "Life Cycle"). |
2115 | * This function implements steps 6 and 7. | |
7ee20df1 BP |
2116 | * |
2117 | * This function should only be called from an ofproto implementation's | |
2118 | * ->destruct() function. It is not suitable elsewhere. */ | |
abe529af BP |
2119 | void |
2120 | ofproto_rule_destroy(struct rule *rule) | |
064af421 | 2121 | { |
7ee20df1 | 2122 | assert(!rule->pending); |
d0918789 | 2123 | oftable_remove_rule(rule); |
7ee20df1 | 2124 | ofproto_rule_destroy__(rule); |
064af421 BP |
2125 | } |
2126 | ||
bcf84111 | 2127 | /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action |
f25d0cf3 | 2128 | * that outputs to 'port' (output to OFPP_FLOOD and OFPP_ALL doesn't count). */ |
2b07c8b1 BP |
2129 | bool |
2130 | ofproto_rule_has_out_port(const struct rule *rule, uint16_t port) | |
064af421 | 2131 | { |
7f05e7ab | 2132 | return (port == OFPP_ANY |
f25d0cf3 | 2133 | || ofpacts_output_to_port(rule->ofpacts, rule->ofpacts_len, port)); |
064af421 BP |
2134 | } |
2135 | ||
2b07c8b1 BP |
2136 | /* Returns true if a rule related to 'op' has an OpenFlow OFPAT_OUTPUT or |
2137 | * OFPAT_ENQUEUE action that outputs to 'out_port'. */ | |
2138 | bool | |
2139 | ofoperation_has_out_port(const struct ofoperation *op, uint16_t out_port) | |
2140 | { | |
2141 | if (ofproto_rule_has_out_port(op->rule, out_port)) { | |
2142 | return true; | |
2143 | } | |
2144 | ||
2145 | switch (op->type) { | |
2146 | case OFOPERATION_ADD: | |
2147 | return op->victim && ofproto_rule_has_out_port(op->victim, out_port); | |
2148 | ||
2149 | case OFOPERATION_DELETE: | |
2150 | return false; | |
2151 | ||
2152 | case OFOPERATION_MODIFY: | |
2153 | return ofpacts_output_to_port(op->ofpacts, op->ofpacts_len, out_port); | |
2154 | } | |
2155 | ||
2156 | NOT_REACHED(); | |
2157 | } | |
2158 | ||
bcf84111 | 2159 | /* Executes the actions indicated by 'rule' on 'packet' and credits 'rule''s |
bcf84111 | 2160 | * statistics appropriately. 'packet' must have at least sizeof(struct |
31a9e63f | 2161 | * ofp10_packet_in) bytes of headroom. |
064af421 | 2162 | * |
bcf84111 BP |
2163 | * 'packet' doesn't necessarily have to match 'rule'. 'rule' will be credited |
2164 | * with statistics for 'packet' either way. | |
2165 | * | |
2166 | * Takes ownership of 'packet'. */ | |
5bf0e941 | 2167 | static int |
abe529af | 2168 | rule_execute(struct rule *rule, uint16_t in_port, struct ofpbuf *packet) |
eedc0097 | 2169 | { |
bcf84111 | 2170 | struct flow flow; |
eedc0097 | 2171 | |
31a9e63f | 2172 | assert(ofpbuf_headroom(packet) >= sizeof(struct ofp10_packet_in)); |
eedc0097 | 2173 | |
72e8bf28 | 2174 | flow_extract(packet, 0, 0, NULL, in_port, &flow); |
5bf0e941 | 2175 | return rule->ofproto->ofproto_class->rule_execute(rule, &flow, packet); |
350a665f BP |
2176 | } |
2177 | ||
abe529af BP |
2178 | /* Returns true if 'rule' should be hidden from the controller. |
2179 | * | |
2180 | * Rules with priority higher than UINT16_MAX are set up by ofproto itself | |
2181 | * (e.g. by in-band control) and are intentionally hidden from the | |
2182 | * controller. */ | |
2b07c8b1 BP |
2183 | bool |
2184 | ofproto_rule_is_hidden(const struct rule *rule) | |
b6c9e612 | 2185 | { |
abe529af | 2186 | return rule->cr.priority > UINT16_MAX; |
7b064a79 | 2187 | } |
5c67e4af BP |
2188 | |
2189 | static enum oftable_flags | |
2190 | rule_get_flags(const struct rule *rule) | |
2191 | { | |
2192 | return rule->ofproto->tables[rule->table_id].flags; | |
2193 | } | |
2194 | ||
2195 | static bool | |
2196 | rule_is_modifiable(const struct rule *rule) | |
2197 | { | |
2198 | return !(rule_get_flags(rule) & OFTABLE_READONLY); | |
2199 | } | |
fa066f01 | 2200 | \f |
90bf1e07 | 2201 | static enum ofperr |
d1e2cf21 | 2202 | handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2203 | { |
b0421aa2 | 2204 | ofconn_send_reply(ofconn, make_echo_reply(oh)); |
064af421 | 2205 | return 0; |
064af421 BP |
2206 | } |
2207 | ||
90bf1e07 | 2208 | static enum ofperr |
d1e2cf21 | 2209 | handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2210 | { |
64ff1d96 | 2211 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
9e1fd49b | 2212 | struct ofputil_switch_features features; |
064af421 | 2213 | struct ofport *port; |
6c1491fb | 2214 | bool arp_match_ip; |
9e1fd49b | 2215 | struct ofpbuf *b; |
c2f0373a BP |
2216 | int n_tables; |
2217 | int i; | |
064af421 | 2218 | |
9e1fd49b BP |
2219 | ofproto->ofproto_class->get_features(ofproto, &arp_match_ip, |
2220 | &features.actions); | |
2221 | assert(features.actions & OFPUTIL_A_OUTPUT); /* sanity check */ | |
064af421 | 2222 | |
c2f0373a BP |
2223 | /* Count only non-hidden tables in the number of tables. (Hidden tables, |
2224 | * if present, are always at the end.) */ | |
2225 | n_tables = ofproto->n_tables; | |
2226 | for (i = 0; i < ofproto->n_tables; i++) { | |
2227 | if (ofproto->tables[i].flags & OFTABLE_HIDDEN) { | |
2228 | n_tables = i; | |
2229 | break; | |
2230 | } | |
2231 | } | |
2232 | ||
9e1fd49b BP |
2233 | features.datapath_id = ofproto->datapath_id; |
2234 | features.n_buffers = pktbuf_capacity(); | |
c2f0373a | 2235 | features.n_tables = n_tables; |
9e1fd49b BP |
2236 | features.capabilities = (OFPUTIL_C_FLOW_STATS | OFPUTIL_C_TABLE_STATS | |
2237 | OFPUTIL_C_PORT_STATS | OFPUTIL_C_QUEUE_STATS); | |
6c1491fb | 2238 | if (arp_match_ip) { |
9e1fd49b | 2239 | features.capabilities |= OFPUTIL_C_ARP_MATCH_IP; |
6c1491fb | 2240 | } |
2e1ae200 JR |
2241 | /* FIXME: Fill in proper features.auxiliary_id for auxiliary connections */ |
2242 | features.auxiliary_id = 0; | |
9e1fd49b BP |
2243 | b = ofputil_encode_switch_features(&features, ofconn_get_protocol(ofconn), |
2244 | oh->xid); | |
64ff1d96 | 2245 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
9e1fd49b | 2246 | ofputil_put_switch_features_port(&port->pp, b); |
064af421 | 2247 | } |
064af421 | 2248 | |
9e1fd49b | 2249 | ofconn_send_reply(ofconn, b); |
064af421 BP |
2250 | return 0; |
2251 | } | |
064af421 | 2252 | |
90bf1e07 | 2253 | static enum ofperr |
d1e2cf21 | 2254 | handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2255 | { |
64ff1d96 | 2256 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 | 2257 | struct ofp_switch_config *osc; |
f0fd1a17 | 2258 | enum ofp_config_flags flags; |
7257b535 | 2259 | struct ofpbuf *buf; |
959a2ecd | 2260 | |
064af421 | 2261 | /* Send reply. */ |
982697a4 BP |
2262 | buf = ofpraw_alloc_reply(OFPRAW_OFPT_GET_CONFIG_REPLY, oh, 0); |
2263 | osc = ofpbuf_put_uninit(buf, sizeof *osc); | |
f0fd1a17 | 2264 | flags = ofproto->frag_handling; |
2e1ae200 JR |
2265 | /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */ |
2266 | if (oh->version < OFP13_VERSION | |
2267 | && ofconn_get_invalid_ttl_to_controller(ofconn)) { | |
f0fd1a17 PS |
2268 | flags |= OFPC_INVALID_TTL_TO_CONTROLLER; |
2269 | } | |
2270 | osc->flags = htons(flags); | |
810605a2 | 2271 | osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn)); |
b0421aa2 | 2272 | ofconn_send_reply(ofconn, buf); |
2d70a31a | 2273 | |
064af421 BP |
2274 | return 0; |
2275 | } | |
064af421 | 2276 | |
90bf1e07 | 2277 | static enum ofperr |
982697a4 | 2278 | handle_set_config(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2279 | { |
982697a4 | 2280 | const struct ofp_switch_config *osc = ofpmsg_body(oh); |
64ff1d96 | 2281 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
d1e2cf21 | 2282 | uint16_t flags = ntohs(osc->flags); |
2d70a31a | 2283 | |
7257b535 BP |
2284 | if (ofconn_get_type(ofconn) != OFCONN_PRIMARY |
2285 | || ofconn_get_role(ofconn) != NX_ROLE_SLAVE) { | |
2286 | enum ofp_config_flags cur = ofproto->frag_handling; | |
2287 | enum ofp_config_flags next = flags & OFPC_FRAG_MASK; | |
2288 | ||
2289 | assert((cur & OFPC_FRAG_MASK) == cur); | |
2290 | if (cur != next) { | |
2291 | if (ofproto->ofproto_class->set_frag_handling(ofproto, next)) { | |
2292 | ofproto->frag_handling = next; | |
2293 | } else { | |
2294 | VLOG_WARN_RL(&rl, "%s: unsupported fragment handling mode %s", | |
2295 | ofproto->name, | |
2296 | ofputil_frag_handling_to_string(next)); | |
2297 | } | |
064af421 BP |
2298 | } |
2299 | } | |
2e1ae200 | 2300 | /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */ |
f0fd1a17 | 2301 | ofconn_set_invalid_ttl_to_controller(ofconn, |
2e1ae200 JR |
2302 | (oh->version < OFP13_VERSION |
2303 | && flags & OFPC_INVALID_TTL_TO_CONTROLLER)); | |
ebe482fd | 2304 | |
810605a2 | 2305 | ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len)); |
0ad9b732 | 2306 | |
064af421 | 2307 | return 0; |
064af421 BP |
2308 | } |
2309 | ||
9deba63b | 2310 | /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow |
90bf1e07 BP |
2311 | * error message code for the caller to propagate upward. Otherwise, returns |
2312 | * 0. | |
2313 | * | |
2314 | * The log message mentions 'msg_type'. */ | |
2315 | static enum ofperr | |
2316 | reject_slave_controller(struct ofconn *ofconn) | |
9deba63b | 2317 | { |
1ce0a5fa BP |
2318 | if (ofconn_get_type(ofconn) == OFCONN_PRIMARY |
2319 | && ofconn_get_role(ofconn) == NX_ROLE_SLAVE) { | |
90bf1e07 | 2320 | return OFPERR_OFPBRC_EPERM; |
9deba63b BP |
2321 | } else { |
2322 | return 0; | |
2323 | } | |
2324 | } | |
2325 | ||
90bf1e07 | 2326 | static enum ofperr |
982697a4 | 2327 | handle_packet_out(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2328 | { |
64ff1d96 | 2329 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
c6a93eb7 BP |
2330 | struct ofputil_packet_out po; |
2331 | struct ofpbuf *payload; | |
f25d0cf3 BP |
2332 | uint64_t ofpacts_stub[1024 / 8]; |
2333 | struct ofpbuf ofpacts; | |
ae412e7d | 2334 | struct flow flow; |
90bf1e07 | 2335 | enum ofperr error; |
064af421 | 2336 | |
ac51afaf BP |
2337 | COVERAGE_INC(ofproto_packet_out); |
2338 | ||
76589937 | 2339 | error = reject_slave_controller(ofconn); |
9deba63b | 2340 | if (error) { |
f25d0cf3 | 2341 | goto exit; |
9deba63b BP |
2342 | } |
2343 | ||
c6a93eb7 | 2344 | /* Decode message. */ |
f25d0cf3 | 2345 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
982697a4 | 2346 | error = ofputil_decode_packet_out(&po, oh, &ofpacts); |
064af421 | 2347 | if (error) { |
f25d0cf3 | 2348 | goto exit_free_ofpacts; |
064af421 | 2349 | } |
91858960 | 2350 | if (po.in_port >= p->max_ports && po.in_port < OFPP_MAX) { |
2e1bfcb6 | 2351 | error = OFPERR_OFPBRC_BAD_PORT; |
91858960 BP |
2352 | goto exit_free_ofpacts; |
2353 | } | |
064af421 | 2354 | |
5cb7a798 | 2355 | |
ac51afaf | 2356 | /* Get payload. */ |
c6a93eb7 BP |
2357 | if (po.buffer_id != UINT32_MAX) { |
2358 | error = ofconn_pktbuf_retrieve(ofconn, po.buffer_id, &payload, NULL); | |
2359 | if (error || !payload) { | |
f25d0cf3 | 2360 | goto exit_free_ofpacts; |
064af421 | 2361 | } |
064af421 | 2362 | } else { |
c6a93eb7 BP |
2363 | payload = xmalloc(sizeof *payload); |
2364 | ofpbuf_use_const(payload, po.packet, po.packet_len); | |
e1154f71 BP |
2365 | } |
2366 | ||
548de4dd | 2367 | /* Verify actions against packet, then send packet if successful. */ |
72e8bf28 | 2368 | flow_extract(payload, 0, 0, NULL, po.in_port, &flow); |
548de4dd BP |
2369 | error = ofpacts_check(po.ofpacts, po.ofpacts_len, &flow, p->max_ports); |
2370 | if (!error) { | |
2371 | error = p->ofproto_class->packet_out(p, payload, &flow, | |
2372 | po.ofpacts, po.ofpacts_len); | |
2373 | } | |
c6a93eb7 | 2374 | ofpbuf_delete(payload); |
abe529af | 2375 | |
f25d0cf3 BP |
2376 | exit_free_ofpacts: |
2377 | ofpbuf_uninit(&ofpacts); | |
2378 | exit: | |
abe529af | 2379 | return error; |
064af421 BP |
2380 | } |
2381 | ||
2382 | static void | |
9e1fd49b BP |
2383 | update_port_config(struct ofport *port, |
2384 | enum ofputil_port_config config, | |
2385 | enum ofputil_port_config mask) | |
064af421 | 2386 | { |
9e1fd49b BP |
2387 | enum ofputil_port_config old_config = port->pp.config; |
2388 | enum ofputil_port_config toggle; | |
abe529af | 2389 | |
9e1fd49b BP |
2390 | toggle = (config ^ port->pp.config) & mask; |
2391 | if (toggle & OFPUTIL_PC_PORT_DOWN) { | |
2392 | if (config & OFPUTIL_PC_PORT_DOWN) { | |
064af421 BP |
2393 | netdev_turn_flags_off(port->netdev, NETDEV_UP, true); |
2394 | } else { | |
2395 | netdev_turn_flags_on(port->netdev, NETDEV_UP, true); | |
2396 | } | |
9e1fd49b | 2397 | toggle &= ~OFPUTIL_PC_PORT_DOWN; |
064af421 | 2398 | } |
abe529af | 2399 | |
9e1fd49b BP |
2400 | port->pp.config ^= toggle; |
2401 | if (port->pp.config != old_config) { | |
abe529af | 2402 | port->ofproto->ofproto_class->port_reconfigured(port, old_config); |
064af421 BP |
2403 | } |
2404 | } | |
2405 | ||
90bf1e07 | 2406 | static enum ofperr |
d1e2cf21 | 2407 | handle_port_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2408 | { |
64ff1d96 | 2409 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
9e1fd49b | 2410 | struct ofputil_port_mod pm; |
064af421 | 2411 | struct ofport *port; |
9e1fd49b | 2412 | enum ofperr error; |
064af421 | 2413 | |
76589937 | 2414 | error = reject_slave_controller(ofconn); |
9deba63b BP |
2415 | if (error) { |
2416 | return error; | |
2417 | } | |
064af421 | 2418 | |
9e1fd49b BP |
2419 | error = ofputil_decode_port_mod(oh, &pm); |
2420 | if (error) { | |
2421 | return error; | |
2422 | } | |
2423 | ||
2424 | port = ofproto_get_port(p, pm.port_no); | |
064af421 | 2425 | if (!port) { |
90bf1e07 | 2426 | return OFPERR_OFPPMFC_BAD_PORT; |
9e1fd49b | 2427 | } else if (!eth_addr_equals(port->pp.hw_addr, pm.hw_addr)) { |
90bf1e07 | 2428 | return OFPERR_OFPPMFC_BAD_HW_ADDR; |
064af421 | 2429 | } else { |
9e1fd49b BP |
2430 | update_port_config(port, pm.config, pm.mask); |
2431 | if (pm.advertise) { | |
2432 | netdev_set_advertisements(port->netdev, pm.advertise); | |
064af421 BP |
2433 | } |
2434 | } | |
2435 | return 0; | |
2436 | } | |
2437 | ||
90bf1e07 | 2438 | static enum ofperr |
3269c562 | 2439 | handle_desc_stats_request(struct ofconn *ofconn, |
982697a4 | 2440 | const struct ofp_header *request) |
064af421 | 2441 | { |
64ff1d96 | 2442 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 BP |
2443 | struct ofp_desc_stats *ods; |
2444 | struct ofpbuf *msg; | |
2445 | ||
982697a4 BP |
2446 | msg = ofpraw_alloc_stats_reply(request, 0); |
2447 | ods = ofpbuf_put_zeros(msg, sizeof *ods); | |
5a719c38 JP |
2448 | ovs_strlcpy(ods->mfr_desc, p->mfr_desc, sizeof ods->mfr_desc); |
2449 | ovs_strlcpy(ods->hw_desc, p->hw_desc, sizeof ods->hw_desc); | |
2450 | ovs_strlcpy(ods->sw_desc, p->sw_desc, sizeof ods->sw_desc); | |
2451 | ovs_strlcpy(ods->serial_num, p->serial_desc, sizeof ods->serial_num); | |
2452 | ovs_strlcpy(ods->dp_desc, p->dp_desc, sizeof ods->dp_desc); | |
b0421aa2 | 2453 | ofconn_send_reply(ofconn, msg); |
064af421 BP |
2454 | |
2455 | return 0; | |
2456 | } | |
2457 | ||
90bf1e07 | 2458 | static enum ofperr |
3269c562 | 2459 | handle_table_stats_request(struct ofconn *ofconn, |
982697a4 | 2460 | const struct ofp_header *request) |
064af421 | 2461 | { |
64ff1d96 | 2462 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
307975da | 2463 | struct ofp12_table_stats *ots; |
064af421 | 2464 | struct ofpbuf *msg; |
c2f0373a | 2465 | int n_tables; |
6c1491fb | 2466 | size_t i; |
064af421 | 2467 | |
307975da SH |
2468 | /* Set up default values. |
2469 | * | |
2470 | * ofp12_table_stats is used as a generic structure as | |
2471 | * it is able to hold all the fields for ofp10_table_stats | |
2472 | * and ofp11_table_stats (and of course itself). | |
2473 | */ | |
2474 | ots = xcalloc(p->n_tables, sizeof *ots); | |
6c1491fb BP |
2475 | for (i = 0; i < p->n_tables; i++) { |
2476 | ots[i].table_id = i; | |
35aa7a21 | 2477 | sprintf(ots[i].name, "table%zu", i); |
307975da SH |
2478 | ots[i].match = htonll(OFPXMT12_MASK); |
2479 | ots[i].wildcards = htonll(OFPXMT12_MASK); | |
e78b61f6 BP |
2480 | ots[i].write_actions = htonl(OFPAT11_OUTPUT); |
2481 | ots[i].apply_actions = htonl(OFPAT11_OUTPUT); | |
307975da SH |
2482 | ots[i].write_setfields = htonll(OFPXMT12_MASK); |
2483 | ots[i].apply_setfields = htonll(OFPXMT12_MASK); | |
2484 | ots[i].metadata_match = htonll(UINT64_MAX); | |
2485 | ots[i].metadata_write = htonll(UINT64_MAX); | |
2486 | ots[i].instructions = htonl(OFPIT11_ALL); | |
2487 | ots[i].config = htonl(OFPTC11_TABLE_MISS_MASK); | |
6c1491fb | 2488 | ots[i].max_entries = htonl(1000000); /* An arbitrary big number. */ |
d0918789 | 2489 | ots[i].active_count = htonl(classifier_count(&p->tables[i].cls)); |
6c1491fb | 2490 | } |
064af421 | 2491 | |
6c1491fb | 2492 | p->ofproto_class->get_tables(p, ots); |
064af421 | 2493 | |
c2f0373a BP |
2494 | /* Post-process the tables, dropping hidden tables. */ |
2495 | n_tables = p->n_tables; | |
254750ce BP |
2496 | for (i = 0; i < p->n_tables; i++) { |
2497 | const struct oftable *table = &p->tables[i]; | |
2498 | ||
c2f0373a BP |
2499 | if (table->flags & OFTABLE_HIDDEN) { |
2500 | n_tables = i; | |
2501 | break; | |
2502 | } | |
2503 | ||
254750ce BP |
2504 | if (table->name) { |
2505 | ovs_strzcpy(ots[i].name, table->name, sizeof ots[i].name); | |
2506 | } | |
2507 | ||
2508 | if (table->max_flows < ntohl(ots[i].max_entries)) { | |
2509 | ots[i].max_entries = htonl(table->max_flows); | |
2510 | } | |
2511 | } | |
2512 | ||
c2f0373a | 2513 | msg = ofputil_encode_table_stats_reply(ots, n_tables, request); |
b0421aa2 | 2514 | ofconn_send_reply(ofconn, msg); |
307975da SH |
2515 | |
2516 | free(ots); | |
2517 | ||
064af421 BP |
2518 | return 0; |
2519 | } | |
2520 | ||
abaad8cf | 2521 | static void |
63f2140a | 2522 | append_port_stat(struct ofport *port, struct list *replies) |
abaad8cf | 2523 | { |
f8e4867e | 2524 | struct ofputil_port_stats ops = { .port_no = port->pp.port_no }; |
abaad8cf | 2525 | |
d295e8e9 JP |
2526 | /* Intentionally ignore return value, since errors will set |
2527 | * 'stats' to all-1s, which is correct for OpenFlow, and | |
abaad8cf | 2528 | * netdev_get_stats() will log errors. */ |
f8e4867e SH |
2529 | ofproto_port_get_stats(port, &ops.stats); |
2530 | ||
2531 | ofputil_append_port_stat(replies, &ops); | |
abaad8cf JP |
2532 | } |
2533 | ||
90bf1e07 | 2534 | static enum ofperr |
63f2140a | 2535 | handle_port_stats_request(struct ofconn *ofconn, |
982697a4 | 2536 | const struct ofp_header *request) |
064af421 | 2537 | { |
64ff1d96 | 2538 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 | 2539 | struct ofport *port; |
63f2140a | 2540 | struct list replies; |
f8e4867e SH |
2541 | uint16_t port_no; |
2542 | enum ofperr error; | |
2543 | ||
2544 | error = ofputil_decode_port_stats_request(request, &port_no); | |
2545 | if (error) { | |
2546 | return error; | |
2547 | } | |
064af421 | 2548 | |
982697a4 | 2549 | ofpmp_init(&replies, request); |
7f05e7ab | 2550 | if (port_no != OFPP_ANY) { |
f8e4867e | 2551 | port = ofproto_get_port(p, port_no); |
abaad8cf | 2552 | if (port) { |
63f2140a | 2553 | append_port_stat(port, &replies); |
abaad8cf JP |
2554 | } |
2555 | } else { | |
4e8e4213 | 2556 | HMAP_FOR_EACH (port, hmap_node, &p->ports) { |
63f2140a | 2557 | append_port_stat(port, &replies); |
abaad8cf | 2558 | } |
064af421 BP |
2559 | } |
2560 | ||
63f2140a | 2561 | ofconn_send_replies(ofconn, &replies); |
064af421 BP |
2562 | return 0; |
2563 | } | |
2564 | ||
2be393ed JP |
2565 | static enum ofperr |
2566 | handle_port_desc_stats_request(struct ofconn *ofconn, | |
982697a4 | 2567 | const struct ofp_header *request) |
2be393ed JP |
2568 | { |
2569 | struct ofproto *p = ofconn_get_ofproto(ofconn); | |
2e3fa633 | 2570 | enum ofp_version version; |
2be393ed JP |
2571 | struct ofport *port; |
2572 | struct list replies; | |
2573 | ||
982697a4 | 2574 | ofpmp_init(&replies, request); |
2be393ed | 2575 | |
2e3fa633 | 2576 | version = ofputil_protocol_to_ofp_version(ofconn_get_protocol(ofconn)); |
2be393ed | 2577 | HMAP_FOR_EACH (port, hmap_node, &p->ports) { |
2e3fa633 | 2578 | ofputil_append_port_desc_stats_reply(version, &port->pp, &replies); |
2be393ed JP |
2579 | } |
2580 | ||
2581 | ofconn_send_replies(ofconn, &replies); | |
2582 | return 0; | |
2583 | } | |
2584 | ||
c6ebb8fb | 2585 | static void |
f27f2134 BP |
2586 | calc_flow_duration__(long long int start, long long int now, |
2587 | uint32_t *sec, uint32_t *nsec) | |
c6ebb8fb | 2588 | { |
f27f2134 | 2589 | long long int msecs = now - start; |
588cd7b5 BP |
2590 | *sec = msecs / 1000; |
2591 | *nsec = (msecs % 1000) * (1000 * 1000); | |
2592 | } | |
2593 | ||
48266274 BP |
2594 | /* Checks whether 'table_id' is 0xff or a valid table ID in 'ofproto'. Returns |
2595 | * 0 if 'table_id' is OK, otherwise an OpenFlow error code. */ | |
90bf1e07 | 2596 | static enum ofperr |
48266274 BP |
2597 | check_table_id(const struct ofproto *ofproto, uint8_t table_id) |
2598 | { | |
2599 | return (table_id == 0xff || table_id < ofproto->n_tables | |
2600 | ? 0 | |
c22c56bd | 2601 | : OFPERR_OFPBRC_BAD_TABLE_ID); |
48266274 BP |
2602 | |
2603 | } | |
2604 | ||
5c67e4af | 2605 | static struct oftable * |
d4ce8a49 | 2606 | next_visible_table(const struct ofproto *ofproto, uint8_t table_id) |
5c67e4af BP |
2607 | { |
2608 | struct oftable *table; | |
2609 | ||
2610 | for (table = &ofproto->tables[table_id]; | |
2611 | table < &ofproto->tables[ofproto->n_tables]; | |
2612 | table++) { | |
2613 | if (!(table->flags & OFTABLE_HIDDEN)) { | |
2614 | return table; | |
2615 | } | |
2616 | } | |
2617 | ||
2618 | return NULL; | |
2619 | } | |
2620 | ||
d0918789 | 2621 | static struct oftable * |
d4ce8a49 | 2622 | first_matching_table(const struct ofproto *ofproto, uint8_t table_id) |
064af421 | 2623 | { |
6c1491fb | 2624 | if (table_id == 0xff) { |
5c67e4af | 2625 | return next_visible_table(ofproto, 0); |
6c1491fb BP |
2626 | } else if (table_id < ofproto->n_tables) { |
2627 | return &ofproto->tables[table_id]; | |
a02e5331 | 2628 | } else { |
6c1491fb | 2629 | return NULL; |
a02e5331 | 2630 | } |
064af421 BP |
2631 | } |
2632 | ||
d0918789 | 2633 | static struct oftable * |
d4ce8a49 BP |
2634 | next_matching_table(const struct ofproto *ofproto, |
2635 | const struct oftable *table, uint8_t table_id) | |
6c1491fb | 2636 | { |
5c67e4af BP |
2637 | return (table_id == 0xff |
2638 | ? next_visible_table(ofproto, (table - ofproto->tables) + 1) | |
6c1491fb BP |
2639 | : NULL); |
2640 | } | |
2641 | ||
d0918789 | 2642 | /* Assigns TABLE to each oftable, in turn, that matches TABLE_ID in OFPROTO: |
6c1491fb BP |
2643 | * |
2644 | * - If TABLE_ID is 0xff, this iterates over every classifier table in | |
5c67e4af | 2645 | * OFPROTO, skipping tables marked OFTABLE_HIDDEN. |
6c1491fb BP |
2646 | * |
2647 | * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates | |
5c67e4af BP |
2648 | * only once, for that table. (This can be used to access tables marked |
2649 | * OFTABLE_HIDDEN.) | |
6c1491fb | 2650 | * |
48266274 BP |
2651 | * - Otherwise, TABLE_ID isn't valid for OFPROTO, so the loop won't be |
2652 | * entered at all. (Perhaps you should have validated TABLE_ID with | |
2653 | * check_table_id().) | |
6c1491fb BP |
2654 | * |
2655 | * All parameters are evaluated multiple times. | |
2656 | */ | |
d0918789 BP |
2657 | #define FOR_EACH_MATCHING_TABLE(TABLE, TABLE_ID, OFPROTO) \ |
2658 | for ((TABLE) = first_matching_table(OFPROTO, TABLE_ID); \ | |
2659 | (TABLE) != NULL; \ | |
2660 | (TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID)) | |
6c1491fb | 2661 | |
9ed18e46 BP |
2662 | /* Searches 'ofproto' for rules in table 'table_id' (or in all tables, if |
2663 | * 'table_id' is 0xff) that match 'match' in the "loose" way required for | |
2664 | * OpenFlow OFPFC_MODIFY and OFPFC_DELETE requests and puts them on list | |
2665 | * 'rules'. | |
2666 | * | |
7f05e7ab | 2667 | * If 'out_port' is anything other than OFPP_ANY, then only rules that output |
9ed18e46 BP |
2668 | * to 'out_port' are included. |
2669 | * | |
2670 | * Hidden rules are always omitted. | |
2671 | * | |
2672 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 2673 | static enum ofperr |
9ed18e46 | 2674 | collect_rules_loose(struct ofproto *ofproto, uint8_t table_id, |
81a76618 | 2675 | const struct match *match, |
e729e793 JP |
2676 | ovs_be64 cookie, ovs_be64 cookie_mask, |
2677 | uint16_t out_port, struct list *rules) | |
9ed18e46 | 2678 | { |
d0918789 | 2679 | struct oftable *table; |
81a76618 | 2680 | struct cls_rule cr; |
90bf1e07 | 2681 | enum ofperr error; |
48266274 BP |
2682 | |
2683 | error = check_table_id(ofproto, table_id); | |
2684 | if (error) { | |
2685 | return error; | |
2686 | } | |
9ed18e46 BP |
2687 | |
2688 | list_init(rules); | |
81a76618 | 2689 | cls_rule_init(&cr, match, 0); |
d0918789 | 2690 | FOR_EACH_MATCHING_TABLE (table, table_id, ofproto) { |
9ed18e46 BP |
2691 | struct cls_cursor cursor; |
2692 | struct rule *rule; | |
2693 | ||
81a76618 | 2694 | cls_cursor_init(&cursor, &table->cls, &cr); |
9ed18e46 | 2695 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
7ee20df1 | 2696 | if (rule->pending) { |
48d28ac1 BP |
2697 | error = OFPROTO_POSTPONE; |
2698 | goto exit; | |
7ee20df1 | 2699 | } |
2b07c8b1 BP |
2700 | if (!ofproto_rule_is_hidden(rule) |
2701 | && ofproto_rule_has_out_port(rule, out_port) | |
e729e793 | 2702 | && !((rule->flow_cookie ^ cookie) & cookie_mask)) { |
9ed18e46 BP |
2703 | list_push_back(rules, &rule->ofproto_node); |
2704 | } | |
2705 | } | |
2706 | } | |
48d28ac1 BP |
2707 | |
2708 | exit: | |
2709 | cls_rule_destroy(&cr); | |
2710 | return error; | |
9ed18e46 BP |
2711 | } |
2712 | ||
2713 | /* Searches 'ofproto' for rules in table 'table_id' (or in all tables, if | |
2714 | * 'table_id' is 0xff) that match 'match' in the "strict" way required for | |
2715 | * OpenFlow OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests and puts them | |
2716 | * on list 'rules'. | |
2717 | * | |
7f05e7ab | 2718 | * If 'out_port' is anything other than OFPP_ANY, then only rules that output |
9ed18e46 BP |
2719 | * to 'out_port' are included. |
2720 | * | |
2721 | * Hidden rules are always omitted. | |
2722 | * | |
2723 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 2724 | static enum ofperr |
9ed18e46 | 2725 | collect_rules_strict(struct ofproto *ofproto, uint8_t table_id, |
81a76618 | 2726 | const struct match *match, unsigned int priority, |
e729e793 JP |
2727 | ovs_be64 cookie, ovs_be64 cookie_mask, |
2728 | uint16_t out_port, struct list *rules) | |
9ed18e46 | 2729 | { |
d0918789 | 2730 | struct oftable *table; |
81a76618 | 2731 | struct cls_rule cr; |
48266274 BP |
2732 | int error; |
2733 | ||
2734 | error = check_table_id(ofproto, table_id); | |
2735 | if (error) { | |
2736 | return error; | |
2737 | } | |
9ed18e46 BP |
2738 | |
2739 | list_init(rules); | |
81a76618 | 2740 | cls_rule_init(&cr, match, priority); |
d0918789 | 2741 | FOR_EACH_MATCHING_TABLE (table, table_id, ofproto) { |
9ed18e46 BP |
2742 | struct rule *rule; |
2743 | ||
d0918789 | 2744 | rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls, |
81a76618 | 2745 | &cr)); |
9ed18e46 | 2746 | if (rule) { |
7ee20df1 | 2747 | if (rule->pending) { |
48d28ac1 BP |
2748 | error = OFPROTO_POSTPONE; |
2749 | goto exit; | |
7ee20df1 | 2750 | } |
2b07c8b1 BP |
2751 | if (!ofproto_rule_is_hidden(rule) |
2752 | && ofproto_rule_has_out_port(rule, out_port) | |
e729e793 | 2753 | && !((rule->flow_cookie ^ cookie) & cookie_mask)) { |
9ed18e46 BP |
2754 | list_push_back(rules, &rule->ofproto_node); |
2755 | } | |
2756 | } | |
2757 | } | |
48d28ac1 BP |
2758 | |
2759 | exit: | |
2760 | cls_rule_destroy(&cr); | |
9ed18e46 BP |
2761 | return 0; |
2762 | } | |
2763 | ||
f27f2134 BP |
2764 | /* Returns 'age_ms' (a duration in milliseconds), converted to seconds and |
2765 | * forced into the range of a uint16_t. */ | |
2766 | static int | |
2767 | age_secs(long long int age_ms) | |
2768 | { | |
2769 | return (age_ms < 0 ? 0 | |
2770 | : age_ms >= UINT16_MAX * 1000 ? UINT16_MAX | |
2771 | : (unsigned int) age_ms / 1000); | |
2772 | } | |
2773 | ||
90bf1e07 | 2774 | static enum ofperr |
63f2140a | 2775 | handle_flow_stats_request(struct ofconn *ofconn, |
982697a4 | 2776 | const struct ofp_header *request) |
064af421 | 2777 | { |
64ff1d96 | 2778 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 2779 | struct ofputil_flow_stats_request fsr; |
63f2140a | 2780 | struct list replies; |
9ed18e46 BP |
2781 | struct list rules; |
2782 | struct rule *rule; | |
90bf1e07 | 2783 | enum ofperr error; |
09246b99 | 2784 | |
982697a4 | 2785 | error = ofputil_decode_flow_stats_request(&fsr, request); |
09246b99 BP |
2786 | if (error) { |
2787 | return error; | |
2788 | } | |
2789 | ||
9ed18e46 | 2790 | error = collect_rules_loose(ofproto, fsr.table_id, &fsr.match, |
e729e793 | 2791 | fsr.cookie, fsr.cookie_mask, |
9ed18e46 BP |
2792 | fsr.out_port, &rules); |
2793 | if (error) { | |
2794 | return error; | |
2795 | } | |
5ecc9d81 | 2796 | |
982697a4 | 2797 | ofpmp_init(&replies, request); |
9ed18e46 | 2798 | LIST_FOR_EACH (rule, ofproto_node, &rules) { |
f27f2134 | 2799 | long long int now = time_msec(); |
9ed18e46 BP |
2800 | struct ofputil_flow_stats fs; |
2801 | ||
5cb7a798 | 2802 | minimatch_expand(&rule->cr.match, &fs.match); |
81a76618 | 2803 | fs.priority = rule->cr.priority; |
9ed18e46 BP |
2804 | fs.cookie = rule->flow_cookie; |
2805 | fs.table_id = rule->table_id; | |
f27f2134 | 2806 | calc_flow_duration__(rule->created, now, &fs.duration_sec, |
9ed18e46 BP |
2807 | &fs.duration_nsec); |
2808 | fs.idle_timeout = rule->idle_timeout; | |
2809 | fs.hard_timeout = rule->hard_timeout; | |
f27f2134 BP |
2810 | fs.idle_age = age_secs(now - rule->used); |
2811 | fs.hard_age = age_secs(now - rule->modified); | |
9ed18e46 BP |
2812 | ofproto->ofproto_class->rule_get_stats(rule, &fs.packet_count, |
2813 | &fs.byte_count); | |
f25d0cf3 BP |
2814 | fs.ofpacts = rule->ofpacts; |
2815 | fs.ofpacts_len = rule->ofpacts_len; | |
2e1ae200 JR |
2816 | fs.flags = 0; |
2817 | if (rule->send_flow_removed) { | |
2818 | fs.flags |= OFPFF_SEND_FLOW_REM; | |
2819 | /* FIXME: Implement OF 1.3 flags OFPFF13_NO_PKT_COUNTS | |
2820 | and OFPFF13_NO_BYT_COUNTS */ | |
2821 | } | |
9ed18e46 | 2822 | ofputil_append_flow_stats_reply(&fs, &replies); |
3c4486a5 | 2823 | } |
63f2140a | 2824 | ofconn_send_replies(ofconn, &replies); |
5ecc9d81 | 2825 | |
09246b99 BP |
2826 | return 0; |
2827 | } | |
2828 | ||
4f2cad2c | 2829 | static void |
3394b5b6 | 2830 | flow_stats_ds(struct rule *rule, struct ds *results) |
4f2cad2c | 2831 | { |
4f2cad2c | 2832 | uint64_t packet_count, byte_count; |
4f2cad2c | 2833 | |
abe529af BP |
2834 | rule->ofproto->ofproto_class->rule_get_stats(rule, |
2835 | &packet_count, &byte_count); | |
4f2cad2c | 2836 | |
6c1491fb BP |
2837 | if (rule->table_id != 0) { |
2838 | ds_put_format(results, "table_id=%"PRIu8", ", rule->table_id); | |
2839 | } | |
4f2cad2c JP |
2840 | ds_put_format(results, "duration=%llds, ", |
2841 | (time_msec() - rule->created) / 1000); | |
52ae00b3 | 2842 | ds_put_format(results, "priority=%u, ", rule->cr.priority); |
4f2cad2c JP |
2843 | ds_put_format(results, "n_packets=%"PRIu64", ", packet_count); |
2844 | ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count); | |
cb833cf6 | 2845 | cls_rule_format(&rule->cr, results); |
a5df0e72 | 2846 | ds_put_char(results, ','); |
f25d0cf3 BP |
2847 | if (rule->ofpacts_len > 0) { |
2848 | ofpacts_format(rule->ofpacts, rule->ofpacts_len, results); | |
3c8552c1 JP |
2849 | } else { |
2850 | ds_put_cstr(results, "drop"); | |
3dffcf07 | 2851 | } |
4f2cad2c JP |
2852 | ds_put_cstr(results, "\n"); |
2853 | } | |
2854 | ||
d295e8e9 | 2855 | /* Adds a pretty-printed description of all flows to 'results', including |
ee8b231c | 2856 | * hidden flows (e.g., set up by in-band control). */ |
4f2cad2c JP |
2857 | void |
2858 | ofproto_get_all_flows(struct ofproto *p, struct ds *results) | |
2859 | { | |
d0918789 | 2860 | struct oftable *table; |
6c1491fb | 2861 | |
d0918789 | 2862 | OFPROTO_FOR_EACH_TABLE (table, p) { |
6c1491fb BP |
2863 | struct cls_cursor cursor; |
2864 | struct rule *rule; | |
064af421 | 2865 | |
d0918789 | 2866 | cls_cursor_init(&cursor, &table->cls, NULL); |
6c1491fb BP |
2867 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
2868 | flow_stats_ds(rule, results); | |
2869 | } | |
064af421 | 2870 | } |
064af421 BP |
2871 | } |
2872 | ||
b5827b24 BP |
2873 | /* Obtains the NetFlow engine type and engine ID for 'ofproto' into |
2874 | * '*engine_type' and '*engine_id', respectively. */ | |
2875 | void | |
2876 | ofproto_get_netflow_ids(const struct ofproto *ofproto, | |
2877 | uint8_t *engine_type, uint8_t *engine_id) | |
2878 | { | |
abe529af | 2879 | ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id); |
b5827b24 BP |
2880 | } |
2881 | ||
b9380396 EJ |
2882 | /* Checks the fault status of CFM for 'ofp_port' within 'ofproto'. Returns a |
2883 | * bitmask of 'cfm_fault_reason's to indicate a CFM fault (generally | |
2884 | * indicating a connectivity problem). Returns zero if CFM is not faulted, | |
1c0333b6 | 2885 | * and -1 if CFM is not enabled on 'ofp_port'. */ |
a5610457 EJ |
2886 | int |
2887 | ofproto_port_get_cfm_fault(const struct ofproto *ofproto, uint16_t ofp_port) | |
2888 | { | |
2889 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
2890 | return (ofport && ofproto->ofproto_class->get_cfm_fault | |
2891 | ? ofproto->ofproto_class->get_cfm_fault(ofport) | |
2892 | : -1); | |
2893 | } | |
2894 | ||
1c0333b6 EJ |
2895 | /* Checks the operational status reported by the remote CFM endpoint of |
2896 | * 'ofp_port' Returns 1 if operationally up, 0 if operationally down, and -1 | |
2897 | * if CFM is not enabled on 'ofp_port' or does not support operational status. | |
2898 | */ | |
2899 | int | |
2900 | ofproto_port_get_cfm_opup(const struct ofproto *ofproto, uint16_t ofp_port) | |
2901 | { | |
2902 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
2903 | return (ofport && ofproto->ofproto_class->get_cfm_opup | |
2904 | ? ofproto->ofproto_class->get_cfm_opup(ofport) | |
2905 | : -1); | |
2906 | } | |
2907 | ||
1de11730 EJ |
2908 | /* Gets the MPIDs of the remote maintenance points broadcasting to 'ofp_port' |
2909 | * within 'ofproto'. Populates 'rmps' with an array of MPIDs owned by | |
2910 | * 'ofproto', and 'n_rmps' with the number of MPIDs in 'rmps'. Returns a | |
2911 | * number less than 0 if CFM is not enabled on 'ofp_port'. */ | |
2912 | int | |
2913 | ofproto_port_get_cfm_remote_mpids(const struct ofproto *ofproto, | |
2914 | uint16_t ofp_port, const uint64_t **rmps, | |
2915 | size_t *n_rmps) | |
2916 | { | |
2917 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
2918 | ||
2919 | *rmps = NULL; | |
2920 | *n_rmps = 0; | |
2921 | return (ofport && ofproto->ofproto_class->get_cfm_remote_mpids | |
2922 | ? ofproto->ofproto_class->get_cfm_remote_mpids(ofport, rmps, | |
2923 | n_rmps) | |
2924 | : -1); | |
2925 | } | |
2926 | ||
3967a833 MM |
2927 | /* Checks the health of the CFM for 'ofp_port' within 'ofproto'. Returns an |
2928 | * integer value between 0 and 100 to indicate the health of the port as a | |
2929 | * percentage which is the average of cfm health of all the remote_mpids or | |
2930 | * returns -1 if CFM is not enabled on 'ofport'. */ | |
2931 | int | |
2932 | ofproto_port_get_cfm_health(const struct ofproto *ofproto, uint16_t ofp_port) | |
2933 | { | |
2934 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
2935 | return (ofport && ofproto->ofproto_class->get_cfm_health | |
2936 | ? ofproto->ofproto_class->get_cfm_health(ofport) | |
2937 | : -1); | |
2938 | } | |
2939 | ||
90bf1e07 | 2940 | static enum ofperr |
76c93b22 | 2941 | handle_aggregate_stats_request(struct ofconn *ofconn, |
982697a4 | 2942 | const struct ofp_header *oh) |
27d34fce | 2943 | { |
76c93b22 | 2944 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 2945 | struct ofputil_flow_stats_request request; |
76c93b22 | 2946 | struct ofputil_aggregate_stats stats; |
5e9d0469 | 2947 | bool unknown_packets, unknown_bytes; |
76c93b22 | 2948 | struct ofpbuf *reply; |
9ed18e46 BP |
2949 | struct list rules; |
2950 | struct rule *rule; | |
90bf1e07 | 2951 | enum ofperr error; |
27d34fce | 2952 | |
982697a4 | 2953 | error = ofputil_decode_flow_stats_request(&request, oh); |
76c93b22 BP |
2954 | if (error) { |
2955 | return error; | |
2956 | } | |
5ecc9d81 | 2957 | |
9ed18e46 | 2958 | error = collect_rules_loose(ofproto, request.table_id, &request.match, |
e729e793 | 2959 | request.cookie, request.cookie_mask, |
9ed18e46 BP |
2960 | request.out_port, &rules); |
2961 | if (error) { | |
2962 | return error; | |
2963 | } | |
3c4486a5 | 2964 | |
9ed18e46 | 2965 | memset(&stats, 0, sizeof stats); |
5e9d0469 | 2966 | unknown_packets = unknown_bytes = false; |
9ed18e46 BP |
2967 | LIST_FOR_EACH (rule, ofproto_node, &rules) { |
2968 | uint64_t packet_count; | |
2969 | uint64_t byte_count; | |
5ecc9d81 | 2970 | |
9ed18e46 BP |
2971 | ofproto->ofproto_class->rule_get_stats(rule, &packet_count, |
2972 | &byte_count); | |
5ecc9d81 | 2973 | |
5e9d0469 BP |
2974 | if (packet_count == UINT64_MAX) { |
2975 | unknown_packets = true; | |
2976 | } else { | |
2977 | stats.packet_count += packet_count; | |
2978 | } | |
2979 | ||
2980 | if (byte_count == UINT64_MAX) { | |
2981 | unknown_bytes = true; | |
2982 | } else { | |
2983 | stats.byte_count += byte_count; | |
2984 | } | |
2985 | ||
9ed18e46 | 2986 | stats.flow_count++; |
3c4486a5 | 2987 | } |
5e9d0469 BP |
2988 | if (unknown_packets) { |
2989 | stats.packet_count = UINT64_MAX; | |
2990 | } | |
2991 | if (unknown_bytes) { | |
2992 | stats.byte_count = UINT64_MAX; | |
2993 | } | |
27d34fce | 2994 | |
982697a4 | 2995 | reply = ofputil_encode_aggregate_stats_reply(&stats, oh); |
76c93b22 | 2996 | ofconn_send_reply(ofconn, reply); |
09246b99 BP |
2997 | |
2998 | return 0; | |
2999 | } | |
3000 | ||
c1c9c9c4 | 3001 | struct queue_stats_cbdata { |
ca0f572c | 3002 | struct ofport *ofport; |
63f2140a | 3003 | struct list replies; |
c1c9c9c4 BP |
3004 | }; |
3005 | ||
3006 | static void | |
db9220c3 | 3007 | put_queue_stats(struct queue_stats_cbdata *cbdata, uint32_t queue_id, |
c1c9c9c4 BP |
3008 | const struct netdev_queue_stats *stats) |
3009 | { | |
c1c9c9c4 | 3010 | |
64626975 SH |
3011 | struct ofputil_queue_stats oqs = { |
3012 | .port_no = cbdata->ofport->pp.port_no, | |
3013 | .queue_id = queue_id, | |
3014 | .stats = *stats, | |
3015 | }; | |
3016 | ofputil_append_queue_stat(&cbdata->replies, &oqs); | |
c1c9c9c4 BP |
3017 | } |
3018 | ||
3019 | static void | |
db9220c3 | 3020 | handle_queue_stats_dump_cb(uint32_t queue_id, |
c1c9c9c4 BP |
3021 | struct netdev_queue_stats *stats, |
3022 | void *cbdata_) | |
3023 | { | |
3024 | struct queue_stats_cbdata *cbdata = cbdata_; | |
3025 | ||
3026 | put_queue_stats(cbdata, queue_id, stats); | |
3027 | } | |
3028 | ||
0414d158 | 3029 | static enum ofperr |
ca0f572c | 3030 | handle_queue_stats_for_port(struct ofport *port, uint32_t queue_id, |
c1c9c9c4 BP |
3031 | struct queue_stats_cbdata *cbdata) |
3032 | { | |
ca0f572c | 3033 | cbdata->ofport = port; |
c1c9c9c4 BP |
3034 | if (queue_id == OFPQ_ALL) { |
3035 | netdev_dump_queue_stats(port->netdev, | |
3036 | handle_queue_stats_dump_cb, cbdata); | |
3037 | } else { | |
3038 | struct netdev_queue_stats stats; | |
3039 | ||
1ac788f6 BP |
3040 | if (!netdev_get_queue_stats(port->netdev, queue_id, &stats)) { |
3041 | put_queue_stats(cbdata, queue_id, &stats); | |
0414d158 BP |
3042 | } else { |
3043 | return OFPERR_OFPQOFC_BAD_QUEUE; | |
1ac788f6 | 3044 | } |
c1c9c9c4 | 3045 | } |
0414d158 | 3046 | return 0; |
c1c9c9c4 BP |
3047 | } |
3048 | ||
90bf1e07 | 3049 | static enum ofperr |
63f2140a | 3050 | handle_queue_stats_request(struct ofconn *ofconn, |
982697a4 | 3051 | const struct ofp_header *rq) |
c1c9c9c4 | 3052 | { |
64ff1d96 | 3053 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
c1c9c9c4 | 3054 | struct queue_stats_cbdata cbdata; |
0414d158 | 3055 | struct ofport *port; |
0414d158 | 3056 | enum ofperr error; |
64626975 | 3057 | struct ofputil_queue_stats_request oqsr; |
c1c9c9c4 | 3058 | |
c1c9c9c4 BP |
3059 | COVERAGE_INC(ofproto_queue_req); |
3060 | ||
982697a4 | 3061 | ofpmp_init(&cbdata.replies, rq); |
c1c9c9c4 | 3062 | |
64626975 SH |
3063 | error = ofputil_decode_queue_stats_request(rq, &oqsr); |
3064 | if (error) { | |
3065 | return error; | |
3066 | } | |
3067 | ||
7f05e7ab | 3068 | if (oqsr.port_no == OFPP_ANY) { |
0414d158 | 3069 | error = OFPERR_OFPQOFC_BAD_QUEUE; |
4e8e4213 | 3070 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
64626975 | 3071 | if (!handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata)) { |
0414d158 BP |
3072 | error = 0; |
3073 | } | |
c1c9c9c4 | 3074 | } |
0414d158 | 3075 | } else { |
64626975 | 3076 | port = ofproto_get_port(ofproto, oqsr.port_no); |
0414d158 | 3077 | error = (port |
64626975 | 3078 | ? handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata) |
0414d158 BP |
3079 | : OFPERR_OFPQOFC_BAD_PORT); |
3080 | } | |
3081 | if (!error) { | |
3082 | ofconn_send_replies(ofconn, &cbdata.replies); | |
c1c9c9c4 | 3083 | } else { |
63f2140a | 3084 | ofpbuf_list_delete(&cbdata.replies); |
c1c9c9c4 | 3085 | } |
c1c9c9c4 | 3086 | |
0414d158 | 3087 | return error; |
c1c9c9c4 | 3088 | } |
7ee20df1 BP |
3089 | |
3090 | static bool | |
3091 | is_flow_deletion_pending(const struct ofproto *ofproto, | |
3092 | const struct cls_rule *cls_rule, | |
3093 | uint8_t table_id) | |
3094 | { | |
3095 | if (!hmap_is_empty(&ofproto->deletions)) { | |
3096 | struct ofoperation *op; | |
3097 | ||
3098 | HMAP_FOR_EACH_WITH_HASH (op, hmap_node, | |
3099 | cls_rule_hash(cls_rule, table_id), | |
3100 | &ofproto->deletions) { | |
3101 | if (cls_rule_equal(cls_rule, &op->rule->cr)) { | |
3102 | return true; | |
3103 | } | |
3104 | } | |
3105 | } | |
3106 | ||
3107 | return false; | |
3108 | } | |
3109 | ||
79eee1eb BP |
3110 | /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT |
3111 | * in which no matching flow already exists in the flow table. | |
3112 | * | |
3113 | * Adds the flow specified by 'ofm', which is followed by 'n_actions' | |
75a75043 | 3114 | * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow |
90bf1e07 BP |
3115 | * error code on failure, or OFPROTO_POSTPONE if the operation cannot be |
3116 | * initiated now but may be retried later. | |
79eee1eb | 3117 | * |
f25d0cf3 BP |
3118 | * Upon successful return, takes ownership of 'fm->ofpacts'. On failure, |
3119 | * ownership remains with the caller. | |
3120 | * | |
79eee1eb BP |
3121 | * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id, |
3122 | * if any. */ | |
90bf1e07 | 3123 | static enum ofperr |
a9a2da38 | 3124 | add_flow(struct ofproto *ofproto, struct ofconn *ofconn, |
1b9d6420 | 3125 | const struct ofputil_flow_mod *fm, const struct ofp_header *request) |
064af421 | 3126 | { |
d0918789 | 3127 | struct oftable *table; |
7ee20df1 BP |
3128 | struct ofopgroup *group; |
3129 | struct rule *victim; | |
81a76618 | 3130 | struct cls_rule cr; |
064af421 | 3131 | struct rule *rule; |
064af421 BP |
3132 | int error; |
3133 | ||
48266274 BP |
3134 | error = check_table_id(ofproto, fm->table_id); |
3135 | if (error) { | |
3136 | return error; | |
3137 | } | |
3138 | ||
7ee20df1 BP |
3139 | /* Pick table. */ |
3140 | if (fm->table_id == 0xff) { | |
3141 | uint8_t table_id; | |
13521ff5 | 3142 | if (ofproto->ofproto_class->rule_choose_table) { |
81a76618 BP |
3143 | error = ofproto->ofproto_class->rule_choose_table(ofproto, |
3144 | &fm->match, | |
7ee20df1 BP |
3145 | &table_id); |
3146 | if (error) { | |
3147 | return error; | |
3148 | } | |
3149 | assert(table_id < ofproto->n_tables); | |
3150 | table = &ofproto->tables[table_id]; | |
3151 | } else { | |
3152 | table = &ofproto->tables[0]; | |
3153 | } | |
3154 | } else if (fm->table_id < ofproto->n_tables) { | |
3155 | table = &ofproto->tables[fm->table_id]; | |
3156 | } else { | |
c22c56bd | 3157 | return OFPERR_OFPBRC_BAD_TABLE_ID; |
064af421 BP |
3158 | } |
3159 | ||
5c67e4af BP |
3160 | if (table->flags & OFTABLE_READONLY) { |
3161 | return OFPERR_OFPBRC_EPERM; | |
3162 | } | |
3163 | ||
81a76618 BP |
3164 | /* Allocate new rule and initialize classifier rule. */ |
3165 | rule = ofproto->ofproto_class->rule_alloc(); | |
3166 | if (!rule) { | |
3167 | VLOG_WARN_RL(&rl, "%s: failed to create rule (%s)", | |
3168 | ofproto->name, strerror(error)); | |
3169 | return ENOMEM; | |
63adcc7d | 3170 | } |
81a76618 | 3171 | cls_rule_init(&rule->cr, &fm->match, fm->priority); |
63adcc7d | 3172 | |
7ee20df1 | 3173 | /* Serialize against pending deletion. */ |
81a76618 | 3174 | if (is_flow_deletion_pending(ofproto, &cr, table - ofproto->tables)) { |
48d28ac1 | 3175 | cls_rule_destroy(&rule->cr); |
81a76618 | 3176 | ofproto->ofproto_class->rule_dealloc(rule); |
7ee20df1 | 3177 | return OFPROTO_POSTPONE; |
afe75089 | 3178 | } |
064af421 | 3179 | |
81a76618 BP |
3180 | /* Check for overlap, if requested. */ |
3181 | if (fm->flags & OFPFF_CHECK_OVERLAP | |
3182 | && classifier_rule_overlaps(&table->cls, &rule->cr)) { | |
48d28ac1 | 3183 | cls_rule_destroy(&rule->cr); |
81a76618 BP |
3184 | ofproto->ofproto_class->rule_dealloc(rule); |
3185 | return OFPERR_OFPFMFC_OVERLAP; | |
7ee20df1 | 3186 | } |
81a76618 | 3187 | |
2e1ae200 JR |
3188 | /* FIXME: Implement OFPFF12_RESET_COUNTS */ |
3189 | ||
7ee20df1 | 3190 | rule->ofproto = ofproto; |
7ee20df1 | 3191 | rule->pending = NULL; |
623e1caf | 3192 | rule->flow_cookie = fm->new_cookie; |
1745cd08 | 3193 | rule->created = rule->modified = rule->used = time_msec(); |
7ee20df1 BP |
3194 | rule->idle_timeout = fm->idle_timeout; |
3195 | rule->hard_timeout = fm->hard_timeout; | |
3196 | rule->table_id = table - ofproto->tables; | |
3197 | rule->send_flow_removed = (fm->flags & OFPFF_SEND_FLOW_REM) != 0; | |
2e1ae200 JR |
3198 | /* FIXME: Implement OF 1.3 flags OFPFF13_NO_PKT_COUNTS |
3199 | and OFPFF13_NO_BYT_COUNTS */ | |
f25d0cf3 BP |
3200 | rule->ofpacts = xmemdup(fm->ofpacts, fm->ofpacts_len); |
3201 | rule->ofpacts_len = fm->ofpacts_len; | |
254750ce BP |
3202 | rule->evictable = true; |
3203 | rule->eviction_group = NULL; | |
2b07c8b1 BP |
3204 | rule->monitor_flags = 0; |
3205 | rule->add_seqno = 0; | |
3206 | rule->modify_seqno = 0; | |
7ee20df1 BP |
3207 | |
3208 | /* Insert new rule. */ | |
d0918789 | 3209 | victim = oftable_replace_rule(rule); |
5c67e4af BP |
3210 | if (victim && !rule_is_modifiable(victim)) { |
3211 | error = OFPERR_OFPBRC_EPERM; | |
3212 | } else if (victim && victim->pending) { | |
7ee20df1 BP |
3213 | error = OFPROTO_POSTPONE; |
3214 | } else { | |
a7d94793 | 3215 | struct ofoperation *op; |
254750ce BP |
3216 | struct rule *evict; |
3217 | ||
3218 | if (classifier_count(&table->cls) > table->max_flows) { | |
3219 | bool was_evictable; | |
3220 | ||
3221 | was_evictable = rule->evictable; | |
3222 | rule->evictable = false; | |
3223 | evict = choose_rule_to_evict(table); | |
3224 | rule->evictable = was_evictable; | |
3225 | ||
3226 | if (!evict) { | |
be2b69d1 | 3227 | error = OFPERR_OFPFMFC_TABLE_FULL; |
254750ce BP |
3228 | goto exit; |
3229 | } else if (evict->pending) { | |
3230 | error = OFPROTO_POSTPONE; | |
3231 | goto exit; | |
3232 | } | |
3233 | } else { | |
3234 | evict = NULL; | |
3235 | } | |
3236 | ||
7024dffe | 3237 | group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id); |
2b07c8b1 | 3238 | op = ofoperation_create(group, rule, OFOPERATION_ADD, 0); |
a7d94793 | 3239 | op->victim = victim; |
7ee20df1 BP |
3240 | |
3241 | error = ofproto->ofproto_class->rule_construct(rule); | |
3242 | if (error) { | |
e615b0a3 | 3243 | op->group->n_running--; |
7ee20df1 | 3244 | ofoperation_destroy(rule->pending); |
254750ce BP |
3245 | } else if (evict) { |
3246 | delete_flow__(evict, group); | |
7ee20df1 BP |
3247 | } |
3248 | ofopgroup_submit(group); | |
064af421 | 3249 | } |
79eee1eb | 3250 | |
254750ce | 3251 | exit: |
7ee20df1 | 3252 | /* Back out if an error occurred. */ |
79eee1eb | 3253 | if (error) { |
d0918789 | 3254 | oftable_substitute_rule(rule, victim); |
7ee20df1 | 3255 | ofproto_rule_destroy__(rule); |
79eee1eb | 3256 | } |
7ee20df1 | 3257 | return error; |
064af421 | 3258 | } |
79eee1eb BP |
3259 | \f |
3260 | /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */ | |
064af421 | 3261 | |
9ed18e46 BP |
3262 | /* Modifies the rules listed in 'rules', changing their actions to match those |
3263 | * in 'fm'. | |
79eee1eb | 3264 | * |
9ed18e46 BP |
3265 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, |
3266 | * if any. | |
3267 | * | |
3268 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 3269 | static enum ofperr |
7024dffe BP |
3270 | modify_flows__(struct ofproto *ofproto, struct ofconn *ofconn, |
3271 | const struct ofputil_flow_mod *fm, | |
7ee20df1 | 3272 | const struct ofp_header *request, struct list *rules) |
79eee1eb | 3273 | { |
7ee20df1 | 3274 | struct ofopgroup *group; |
9ed18e46 | 3275 | struct rule *rule; |
5c67e4af | 3276 | enum ofperr error; |
79eee1eb | 3277 | |
7024dffe | 3278 | group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id); |
5c67e4af | 3279 | error = OFPERR_OFPBRC_EPERM; |
9ed18e46 | 3280 | LIST_FOR_EACH (rule, ofproto_node, rules) { |
08043761 BP |
3281 | struct ofoperation *op; |
3282 | bool actions_changed; | |
3283 | ovs_be64 new_cookie; | |
3284 | ||
2e1ae200 JR |
3285 | /* FIXME: Implement OFPFF12_RESET_COUNTS */ |
3286 | ||
5c67e4af BP |
3287 | if (rule_is_modifiable(rule)) { |
3288 | /* At least one rule is modifiable, don't report EPERM error. */ | |
3289 | error = 0; | |
3290 | } else { | |
3291 | continue; | |
3292 | } | |
3293 | ||
08043761 BP |
3294 | actions_changed = !ofpacts_equal(fm->ofpacts, fm->ofpacts_len, |
3295 | rule->ofpacts, rule->ofpacts_len); | |
3296 | new_cookie = (fm->new_cookie != htonll(UINT64_MAX) | |
3297 | ? fm->new_cookie | |
3298 | : rule->flow_cookie); | |
3299 | if (!actions_changed && new_cookie == rule->flow_cookie) { | |
3300 | /* No change at all. */ | |
3301 | continue; | |
3302 | } | |
a7d94793 | 3303 | |
2b07c8b1 | 3304 | op = ofoperation_create(group, rule, OFOPERATION_MODIFY, 0); |
08043761 BP |
3305 | rule->flow_cookie = new_cookie; |
3306 | if (actions_changed) { | |
a7d94793 BP |
3307 | op->ofpacts = rule->ofpacts; |
3308 | op->ofpacts_len = rule->ofpacts_len; | |
f25d0cf3 BP |
3309 | rule->ofpacts = xmemdup(fm->ofpacts, fm->ofpacts_len); |
3310 | rule->ofpacts_len = fm->ofpacts_len; | |
3311 | rule->ofproto->ofproto_class->rule_modify_actions(rule); | |
308881af | 3312 | } else { |
08043761 | 3313 | ofoperation_complete(op, 0); |
623e1caf | 3314 | } |
5ecc9d81 | 3315 | } |
7ee20df1 | 3316 | ofopgroup_submit(group); |
79eee1eb | 3317 | |
5c67e4af | 3318 | return error; |
9ed18e46 BP |
3319 | } |
3320 | ||
9387b970 SH |
3321 | static enum ofperr |
3322 | modify_flows_add(struct ofproto *ofproto, struct ofconn *ofconn, | |
3323 | const struct ofputil_flow_mod *fm, | |
3324 | const struct ofp_header *request) | |
3325 | { | |
3326 | if (fm->cookie_mask != htonll(0) || fm->new_cookie == htonll(UINT64_MAX)) { | |
3327 | return 0; | |
3328 | } | |
3329 | return add_flow(ofproto, ofconn, fm, request); | |
3330 | } | |
3331 | ||
90bf1e07 BP |
3332 | /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on |
3333 | * failure. | |
9ed18e46 BP |
3334 | * |
3335 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, | |
3336 | * if any. */ | |
90bf1e07 | 3337 | static enum ofperr |
7024dffe | 3338 | modify_flows_loose(struct ofproto *ofproto, struct ofconn *ofconn, |
1b9d6420 | 3339 | const struct ofputil_flow_mod *fm, |
7ee20df1 | 3340 | const struct ofp_header *request) |
9ed18e46 | 3341 | { |
9ed18e46 BP |
3342 | struct list rules; |
3343 | int error; | |
3344 | ||
81a76618 | 3345 | error = collect_rules_loose(ofproto, fm->table_id, &fm->match, |
e729e793 | 3346 | fm->cookie, fm->cookie_mask, |
7f05e7ab | 3347 | OFPP_ANY, &rules); |
623e1caf JP |
3348 | if (error) { |
3349 | return error; | |
3350 | } else if (list_is_empty(&rules)) { | |
9387b970 | 3351 | return modify_flows_add(ofproto, ofconn, fm, request); |
623e1caf JP |
3352 | } else { |
3353 | return modify_flows__(ofproto, ofconn, fm, request, &rules); | |
3354 | } | |
79eee1eb BP |
3355 | } |
3356 | ||
3357 | /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error | |
90bf1e07 | 3358 | * code on failure. |
79eee1eb | 3359 | * |
9ed18e46 | 3360 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, |
79eee1eb | 3361 | * if any. */ |
90bf1e07 | 3362 | static enum ofperr |
7024dffe | 3363 | modify_flow_strict(struct ofproto *ofproto, struct ofconn *ofconn, |
1b9d6420 | 3364 | const struct ofputil_flow_mod *fm, |
7ee20df1 | 3365 | const struct ofp_header *request) |
79eee1eb | 3366 | { |
9ed18e46 | 3367 | struct list rules; |
6c1491fb BP |
3368 | int error; |
3369 | ||
81a76618 BP |
3370 | error = collect_rules_strict(ofproto, fm->table_id, &fm->match, |
3371 | fm->priority, fm->cookie, fm->cookie_mask, | |
7f05e7ab | 3372 | OFPP_ANY, &rules); |
623e1caf JP |
3373 | |
3374 | if (error) { | |
3375 | return error; | |
3376 | } else if (list_is_empty(&rules)) { | |
9387b970 | 3377 | return modify_flows_add(ofproto, ofconn, fm, request); |
623e1caf JP |
3378 | } else { |
3379 | return list_is_singleton(&rules) ? modify_flows__(ofproto, ofconn, | |
3380 | fm, request, &rules) | |
3381 | : 0; | |
3382 | } | |
79eee1eb | 3383 | } |
9ed18e46 BP |
3384 | \f |
3385 | /* OFPFC_DELETE implementation. */ | |
79eee1eb | 3386 | |
254750ce BP |
3387 | static void |
3388 | delete_flow__(struct rule *rule, struct ofopgroup *group) | |
3389 | { | |
3390 | struct ofproto *ofproto = rule->ofproto; | |
3391 | ||
3392 | ofproto_rule_send_removed(rule, OFPRR_DELETE); | |
3393 | ||
2b07c8b1 | 3394 | ofoperation_create(group, rule, OFOPERATION_DELETE, OFPRR_DELETE); |
254750ce BP |
3395 | oftable_remove_rule(rule); |
3396 | ofproto->ofproto_class->rule_destruct(rule); | |
3397 | } | |
3398 | ||
9ed18e46 BP |
3399 | /* Deletes the rules listed in 'rules'. |
3400 | * | |
3401 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 3402 | static enum ofperr |
7024dffe BP |
3403 | delete_flows__(struct ofproto *ofproto, struct ofconn *ofconn, |
3404 | const struct ofp_header *request, struct list *rules) | |
064af421 | 3405 | { |
9ed18e46 | 3406 | struct rule *rule, *next; |
7ee20df1 | 3407 | struct ofopgroup *group; |
79eee1eb | 3408 | |
7024dffe | 3409 | group = ofopgroup_create(ofproto, ofconn, request, UINT32_MAX); |
9ed18e46 | 3410 | LIST_FOR_EACH_SAFE (rule, next, ofproto_node, rules) { |
254750ce | 3411 | delete_flow__(rule, group); |
79eee1eb | 3412 | } |
7ee20df1 | 3413 | ofopgroup_submit(group); |
79eee1eb | 3414 | |
9ed18e46 | 3415 | return 0; |
79eee1eb | 3416 | } |
79eee1eb BP |
3417 | |
3418 | /* Implements OFPFC_DELETE. */ | |
90bf1e07 | 3419 | static enum ofperr |
7024dffe BP |
3420 | delete_flows_loose(struct ofproto *ofproto, struct ofconn *ofconn, |
3421 | const struct ofputil_flow_mod *fm, | |
7ee20df1 | 3422 | const struct ofp_header *request) |
79eee1eb | 3423 | { |
9ed18e46 | 3424 | struct list rules; |
90bf1e07 | 3425 | enum ofperr error; |
064af421 | 3426 | |
81a76618 | 3427 | error = collect_rules_loose(ofproto, fm->table_id, &fm->match, |
e729e793 JP |
3428 | fm->cookie, fm->cookie_mask, |
3429 | fm->out_port, &rules); | |
9ed18e46 | 3430 | return (error ? error |
7024dffe BP |
3431 | : !list_is_empty(&rules) ? delete_flows__(ofproto, ofconn, request, |
3432 | &rules) | |
9ed18e46 | 3433 | : 0); |
064af421 BP |
3434 | } |
3435 | ||
79eee1eb | 3436 | /* Implements OFPFC_DELETE_STRICT. */ |
90bf1e07 | 3437 | static enum ofperr |
7024dffe | 3438 | delete_flow_strict(struct ofproto *ofproto, struct ofconn *ofconn, |
1b9d6420 | 3439 | const struct ofputil_flow_mod *fm, |
7ee20df1 | 3440 | const struct ofp_header *request) |
79eee1eb | 3441 | { |
9ed18e46 | 3442 | struct list rules; |
90bf1e07 | 3443 | enum ofperr error; |
79eee1eb | 3444 | |
81a76618 BP |
3445 | error = collect_rules_strict(ofproto, fm->table_id, &fm->match, |
3446 | fm->priority, fm->cookie, fm->cookie_mask, | |
e729e793 | 3447 | fm->out_port, &rules); |
9ed18e46 | 3448 | return (error ? error |
7024dffe BP |
3449 | : list_is_singleton(&rules) ? delete_flows__(ofproto, ofconn, |
3450 | request, &rules) | |
9ed18e46 | 3451 | : 0); |
abe529af BP |
3452 | } |
3453 | ||
3454 | static void | |
3455 | ofproto_rule_send_removed(struct rule *rule, uint8_t reason) | |
3456 | { | |
3457 | struct ofputil_flow_removed fr; | |
3458 | ||
2b07c8b1 | 3459 | if (ofproto_rule_is_hidden(rule) || !rule->send_flow_removed) { |
abe529af BP |
3460 | return; |
3461 | } | |
3462 | ||
5cb7a798 | 3463 | minimatch_expand(&rule->cr.match, &fr.match); |
81a76618 | 3464 | fr.priority = rule->cr.priority; |
abe529af BP |
3465 | fr.cookie = rule->flow_cookie; |
3466 | fr.reason = reason; | |
95216219 | 3467 | fr.table_id = rule->table_id; |
f27f2134 BP |
3468 | calc_flow_duration__(rule->created, time_msec(), |
3469 | &fr.duration_sec, &fr.duration_nsec); | |
abe529af | 3470 | fr.idle_timeout = rule->idle_timeout; |
fa2bad0f | 3471 | fr.hard_timeout = rule->hard_timeout; |
abe529af BP |
3472 | rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count, |
3473 | &fr.byte_count); | |
3474 | ||
3475 | connmgr_send_flow_removed(rule->ofproto->connmgr, &fr); | |
3476 | } | |
3477 | ||
1745cd08 BP |
3478 | void |
3479 | ofproto_rule_update_used(struct rule *rule, long long int used) | |
3480 | { | |
3481 | if (used > rule->used) { | |
254750ce BP |
3482 | struct eviction_group *evg = rule->eviction_group; |
3483 | ||
1745cd08 | 3484 | rule->used = used; |
254750ce BP |
3485 | if (evg) { |
3486 | heap_change(&evg->rules, &rule->evg_node, | |
3487 | rule_eviction_priority(rule)); | |
3488 | } | |
1745cd08 BP |
3489 | } |
3490 | } | |
3491 | ||
abe529af BP |
3492 | /* Sends an OpenFlow "flow removed" message with the given 'reason' (either |
3493 | * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its | |
3494 | * ofproto. | |
3495 | * | |
e2a3d183 BP |
3496 | * 'rule' must not have a pending operation (that is, 'rule->pending' must be |
3497 | * NULL). | |
3498 | * | |
abe529af BP |
3499 | * ofproto implementation ->run() functions should use this function to expire |
3500 | * OpenFlow flows. */ | |
3501 | void | |
3502 | ofproto_rule_expire(struct rule *rule, uint8_t reason) | |
3503 | { | |
7ee20df1 BP |
3504 | struct ofproto *ofproto = rule->ofproto; |
3505 | struct ofopgroup *group; | |
3506 | ||
abe529af | 3507 | assert(reason == OFPRR_HARD_TIMEOUT || reason == OFPRR_IDLE_TIMEOUT); |
7ee20df1 | 3508 | |
abe529af | 3509 | ofproto_rule_send_removed(rule, reason); |
7ee20df1 | 3510 | |
7024dffe | 3511 | group = ofopgroup_create_unattached(ofproto); |
2b07c8b1 | 3512 | ofoperation_create(group, rule, OFOPERATION_DELETE, reason); |
d0918789 | 3513 | oftable_remove_rule(rule); |
254750ce | 3514 | ofproto->ofproto_class->rule_destruct(rule); |
7ee20df1 | 3515 | ofopgroup_submit(group); |
79eee1eb BP |
3516 | } |
3517 | \f | |
90bf1e07 | 3518 | static enum ofperr |
2e4f5fcf | 3519 | handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3520 | { |
a5b8d268 | 3521 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
a9a2da38 | 3522 | struct ofputil_flow_mod fm; |
f25d0cf3 BP |
3523 | uint64_t ofpacts_stub[1024 / 8]; |
3524 | struct ofpbuf ofpacts; | |
90bf1e07 | 3525 | enum ofperr error; |
a5b8d268 | 3526 | long long int now; |
064af421 | 3527 | |
76589937 | 3528 | error = reject_slave_controller(ofconn); |
9deba63b | 3529 | if (error) { |
f25d0cf3 | 3530 | goto exit; |
9deba63b | 3531 | } |
3052b0c5 | 3532 | |
f25d0cf3 BP |
3533 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
3534 | error = ofputil_decode_flow_mod(&fm, oh, ofconn_get_protocol(ofconn), | |
3535 | &ofpacts); | |
548de4dd BP |
3536 | if (!error) { |
3537 | error = ofpacts_check(fm.ofpacts, fm.ofpacts_len, | |
81a76618 | 3538 | &fm.match.flow, ofproto->max_ports); |
548de4dd BP |
3539 | } |
3540 | if (!error) { | |
f25d0cf3 | 3541 | error = handle_flow_mod__(ofconn_get_ofproto(ofconn), ofconn, &fm, oh); |
49bdc010 | 3542 | } |
a5b8d268 | 3543 | if (error) { |
f25d0cf3 | 3544 | goto exit_free_ofpacts; |
a5b8d268 | 3545 | } |
2e1ae200 | 3546 | |
a5b8d268 BP |
3547 | /* Record the operation for logging a summary report. */ |
3548 | switch (fm.command) { | |
3549 | case OFPFC_ADD: | |
3550 | ofproto->n_add++; | |
3551 | break; | |
3552 | ||
3553 | case OFPFC_MODIFY: | |
3554 | case OFPFC_MODIFY_STRICT: | |
3555 | ofproto->n_modify++; | |
3556 | break; | |
3557 | ||
3558 | case OFPFC_DELETE: | |
3559 | case OFPFC_DELETE_STRICT: | |
3560 | ofproto->n_delete++; | |
3561 | break; | |
3562 | } | |
3563 | ||
3564 | now = time_msec(); | |
3565 | if (ofproto->next_op_report == LLONG_MAX) { | |
3566 | ofproto->first_op = now; | |
3567 | ofproto->next_op_report = MAX(now + 10 * 1000, | |
3568 | ofproto->op_backoff); | |
3569 | ofproto->op_backoff = ofproto->next_op_report + 60 * 1000; | |
3570 | } | |
3571 | ofproto->last_op = now; | |
3572 | ||
f25d0cf3 BP |
3573 | exit_free_ofpacts: |
3574 | ofpbuf_uninit(&ofpacts); | |
3575 | exit: | |
3576 | return error; | |
75a75043 BP |
3577 | } |
3578 | ||
90bf1e07 | 3579 | static enum ofperr |
75a75043 BP |
3580 | handle_flow_mod__(struct ofproto *ofproto, struct ofconn *ofconn, |
3581 | const struct ofputil_flow_mod *fm, | |
3582 | const struct ofp_header *oh) | |
3583 | { | |
3584 | if (ofproto->n_pending >= 50) { | |
3585 | assert(!list_is_empty(&ofproto->pending)); | |
3586 | return OFPROTO_POSTPONE; | |
3587 | } | |
3588 | ||
3589 | switch (fm->command) { | |
3052b0c5 | 3590 | case OFPFC_ADD: |
75a75043 | 3591 | return add_flow(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3592 | |
3593 | case OFPFC_MODIFY: | |
75a75043 | 3594 | return modify_flows_loose(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3595 | |
3596 | case OFPFC_MODIFY_STRICT: | |
75a75043 | 3597 | return modify_flow_strict(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3598 | |
3599 | case OFPFC_DELETE: | |
75a75043 | 3600 | return delete_flows_loose(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3601 | |
3602 | case OFPFC_DELETE_STRICT: | |
75a75043 | 3603 | return delete_flow_strict(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
3604 | |
3605 | default: | |
75a75043 | 3606 | if (fm->command > 0xff) { |
fbfa2911 BP |
3607 | VLOG_WARN_RL(&rl, "%s: flow_mod has explicit table_id but " |
3608 | "flow_mod_table_id extension is not enabled", | |
3609 | ofproto->name); | |
6c1491fb | 3610 | } |
90bf1e07 | 3611 | return OFPERR_OFPFMFC_BAD_COMMAND; |
3052b0c5 BP |
3612 | } |
3613 | } | |
3614 | ||
90bf1e07 | 3615 | static enum ofperr |
d1e2cf21 | 3616 | handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh) |
9deba63b | 3617 | { |
982697a4 | 3618 | const struct nx_role_request *nrr = ofpmsg_body(oh); |
9deba63b BP |
3619 | struct nx_role_request *reply; |
3620 | struct ofpbuf *buf; | |
3621 | uint32_t role; | |
3622 | ||
9deba63b BP |
3623 | role = ntohl(nrr->role); |
3624 | if (role != NX_ROLE_OTHER && role != NX_ROLE_MASTER | |
3625 | && role != NX_ROLE_SLAVE) { | |
2e0525bc | 3626 | return OFPERR_OFPRRFC_BAD_ROLE; |
9deba63b BP |
3627 | } |
3628 | ||
7ee20df1 BP |
3629 | if (ofconn_get_role(ofconn) != role |
3630 | && ofconn_has_pending_opgroups(ofconn)) { | |
3631 | return OFPROTO_POSTPONE; | |
3632 | } | |
3633 | ||
1ce0a5fa | 3634 | ofconn_set_role(ofconn, role); |
9deba63b | 3635 | |
982697a4 BP |
3636 | buf = ofpraw_alloc_reply(OFPRAW_NXT_ROLE_REPLY, oh, 0); |
3637 | reply = ofpbuf_put_zeros(buf, sizeof *reply); | |
9deba63b | 3638 | reply->role = htonl(role); |
b0421aa2 | 3639 | ofconn_send_reply(ofconn, buf); |
9deba63b BP |
3640 | |
3641 | return 0; | |
3642 | } | |
3643 | ||
90bf1e07 | 3644 | static enum ofperr |
6c1491fb BP |
3645 | handle_nxt_flow_mod_table_id(struct ofconn *ofconn, |
3646 | const struct ofp_header *oh) | |
3647 | { | |
982697a4 | 3648 | const struct nx_flow_mod_table_id *msg = ofpmsg_body(oh); |
27527aa0 BP |
3649 | enum ofputil_protocol cur, next; |
3650 | ||
3651 | cur = ofconn_get_protocol(ofconn); | |
3652 | next = ofputil_protocol_set_tid(cur, msg->set != 0); | |
3653 | ofconn_set_protocol(ofconn, next); | |
6c1491fb | 3654 | |
6c1491fb BP |
3655 | return 0; |
3656 | } | |
3657 | ||
90bf1e07 | 3658 | static enum ofperr |
d1e2cf21 | 3659 | handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh) |
09246b99 | 3660 | { |
982697a4 | 3661 | const struct nx_set_flow_format *msg = ofpmsg_body(oh); |
27527aa0 BP |
3662 | enum ofputil_protocol cur, next; |
3663 | enum ofputil_protocol next_base; | |
09246b99 | 3664 | |
27527aa0 BP |
3665 | next_base = ofputil_nx_flow_format_to_protocol(ntohl(msg->format)); |
3666 | if (!next_base) { | |
90bf1e07 | 3667 | return OFPERR_OFPBRC_EPERM; |
09246b99 | 3668 | } |
7ee20df1 | 3669 | |
27527aa0 BP |
3670 | cur = ofconn_get_protocol(ofconn); |
3671 | next = ofputil_protocol_set_base(cur, next_base); | |
3672 | if (cur != next && ofconn_has_pending_opgroups(ofconn)) { | |
3673 | /* Avoid sending async messages in surprising protocol. */ | |
7ee20df1 BP |
3674 | return OFPROTO_POSTPONE; |
3675 | } | |
3676 | ||
27527aa0 | 3677 | ofconn_set_protocol(ofconn, next); |
7ee20df1 | 3678 | return 0; |
09246b99 BP |
3679 | } |
3680 | ||
90bf1e07 | 3681 | static enum ofperr |
54834960 EJ |
3682 | handle_nxt_set_packet_in_format(struct ofconn *ofconn, |
3683 | const struct ofp_header *oh) | |
3684 | { | |
982697a4 | 3685 | const struct nx_set_packet_in_format *msg = ofpmsg_body(oh); |
54834960 EJ |
3686 | uint32_t format; |
3687 | ||
54834960 | 3688 | format = ntohl(msg->format); |
a15f0eeb | 3689 | if (format != NXPIF_OPENFLOW10 && format != NXPIF_NXM) { |
90bf1e07 | 3690 | return OFPERR_OFPBRC_EPERM; |
54834960 EJ |
3691 | } |
3692 | ||
3693 | if (format != ofconn_get_packet_in_format(ofconn) | |
3694 | && ofconn_has_pending_opgroups(ofconn)) { | |
3695 | /* Avoid sending async message in surprsing packet in format. */ | |
3696 | return OFPROTO_POSTPONE; | |
3697 | } | |
3698 | ||
3699 | ofconn_set_packet_in_format(ofconn, format); | |
3700 | return 0; | |
3701 | } | |
3702 | ||
80d5aefd BP |
3703 | static enum ofperr |
3704 | handle_nxt_set_async_config(struct ofconn *ofconn, const struct ofp_header *oh) | |
3705 | { | |
982697a4 | 3706 | const struct nx_async_config *msg = ofpmsg_body(oh); |
80d5aefd BP |
3707 | uint32_t master[OAM_N_TYPES]; |
3708 | uint32_t slave[OAM_N_TYPES]; | |
3709 | ||
3710 | master[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[0]); | |
3711 | master[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[0]); | |
3712 | master[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[0]); | |
3713 | ||
3714 | slave[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[1]); | |
3715 | slave[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[1]); | |
3716 | slave[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[1]); | |
3717 | ||
3718 | ofconn_set_async_config(ofconn, master, slave); | |
4550b647 MM |
3719 | if (ofconn_get_type(ofconn) == OFCONN_SERVICE && |
3720 | !ofconn_get_miss_send_len(ofconn)) { | |
3721 | ofconn_set_miss_send_len(ofconn, OFP_DEFAULT_MISS_SEND_LEN); | |
3722 | } | |
80d5aefd BP |
3723 | |
3724 | return 0; | |
3725 | } | |
3726 | ||
a7349929 BP |
3727 | static enum ofperr |
3728 | handle_nxt_set_controller_id(struct ofconn *ofconn, | |
3729 | const struct ofp_header *oh) | |
3730 | { | |
982697a4 | 3731 | const struct nx_controller_id *nci = ofpmsg_body(oh); |
a7349929 | 3732 | |
a7349929 BP |
3733 | if (!is_all_zeros(nci->zero, sizeof nci->zero)) { |
3734 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
3735 | } | |
3736 | ||
3737 | ofconn_set_controller_id(ofconn, ntohs(nci->controller_id)); | |
3738 | return 0; | |
3739 | } | |
3740 | ||
90bf1e07 | 3741 | static enum ofperr |
d1e2cf21 | 3742 | handle_barrier_request(struct ofconn *ofconn, const struct ofp_header *oh) |
246e61ea | 3743 | { |
246e61ea JP |
3744 | struct ofpbuf *buf; |
3745 | ||
7ee20df1 BP |
3746 | if (ofconn_has_pending_opgroups(ofconn)) { |
3747 | return OFPROTO_POSTPONE; | |
3748 | } | |
3749 | ||
982697a4 BP |
3750 | buf = ofpraw_alloc_reply((oh->version == OFP10_VERSION |
3751 | ? OFPRAW_OFPT10_BARRIER_REPLY | |
3752 | : OFPRAW_OFPT11_BARRIER_REPLY), oh, 0); | |
b0421aa2 | 3753 | ofconn_send_reply(ofconn, buf); |
246e61ea JP |
3754 | return 0; |
3755 | } | |
3756 | ||
2b07c8b1 BP |
3757 | static void |
3758 | ofproto_compose_flow_refresh_update(const struct rule *rule, | |
3759 | enum nx_flow_monitor_flags flags, | |
3760 | struct list *msgs) | |
3761 | { | |
3762 | struct ofoperation *op = rule->pending; | |
3763 | struct ofputil_flow_update fu; | |
5cb7a798 | 3764 | struct match match; |
2b07c8b1 BP |
3765 | |
3766 | if (op && op->type == OFOPERATION_ADD && !op->victim) { | |
3767 | /* We'll report the final flow when the operation completes. Reporting | |
3768 | * it now would cause a duplicate report later. */ | |
3769 | return; | |
3770 | } | |
3771 | ||
3772 | fu.event = (flags & (NXFMF_INITIAL | NXFMF_ADD) | |
3773 | ? NXFME_ADDED : NXFME_MODIFIED); | |
3774 | fu.reason = 0; | |
3775 | fu.idle_timeout = rule->idle_timeout; | |
3776 | fu.hard_timeout = rule->hard_timeout; | |
3777 | fu.table_id = rule->table_id; | |
3778 | fu.cookie = rule->flow_cookie; | |
5cb7a798 BP |
3779 | minimatch_expand(&rule->cr.match, &match); |
3780 | fu.match = &match; | |
6b140a4e | 3781 | fu.priority = rule->cr.priority; |
2b07c8b1 BP |
3782 | if (!(flags & NXFMF_ACTIONS)) { |
3783 | fu.ofpacts = NULL; | |
3784 | fu.ofpacts_len = 0; | |
3785 | } else if (!op) { | |
3786 | fu.ofpacts = rule->ofpacts; | |
3787 | fu.ofpacts_len = rule->ofpacts_len; | |
3788 | } else { | |
3789 | /* An operation is in progress. Use the previous version of the flow's | |
3790 | * actions, so that when the operation commits we report the change. */ | |
3791 | switch (op->type) { | |
3792 | case OFOPERATION_ADD: | |
3793 | /* We already verified that there was a victim. */ | |
3794 | fu.ofpacts = op->victim->ofpacts; | |
3795 | fu.ofpacts_len = op->victim->ofpacts_len; | |
3796 | break; | |
3797 | ||
3798 | case OFOPERATION_MODIFY: | |
3799 | if (op->ofpacts) { | |
3800 | fu.ofpacts = op->ofpacts; | |
3801 | fu.ofpacts_len = op->ofpacts_len; | |
3802 | } else { | |
3803 | fu.ofpacts = rule->ofpacts; | |
3804 | fu.ofpacts_len = rule->ofpacts_len; | |
3805 | } | |
3806 | break; | |
3807 | ||
3808 | case OFOPERATION_DELETE: | |
3809 | fu.ofpacts = rule->ofpacts; | |
3810 | fu.ofpacts_len = rule->ofpacts_len; | |
3811 | break; | |
3812 | ||
3813 | default: | |
3814 | NOT_REACHED(); | |
3815 | } | |
3816 | } | |
3817 | ||
3818 | if (list_is_empty(msgs)) { | |
3819 | ofputil_start_flow_update(msgs); | |
3820 | } | |
3821 | ofputil_append_flow_update(&fu, msgs); | |
3822 | } | |
3823 | ||
3824 | void | |
3825 | ofmonitor_compose_refresh_updates(struct list *rules, struct list *msgs) | |
3826 | { | |
3827 | struct rule *rule; | |
3828 | ||
3829 | LIST_FOR_EACH (rule, ofproto_node, rules) { | |
3830 | enum nx_flow_monitor_flags flags = rule->monitor_flags; | |
3831 | rule->monitor_flags = 0; | |
3832 | ||
3833 | ofproto_compose_flow_refresh_update(rule, flags, msgs); | |
3834 | } | |
3835 | } | |
3836 | ||
3837 | static void | |
3838 | ofproto_collect_ofmonitor_refresh_rule(const struct ofmonitor *m, | |
3839 | struct rule *rule, uint64_t seqno, | |
3840 | struct list *rules) | |
3841 | { | |
3842 | enum nx_flow_monitor_flags update; | |
3843 | ||
3844 | if (ofproto_rule_is_hidden(rule)) { | |
3845 | return; | |
3846 | } | |
3847 | ||
3848 | if (!(rule->pending | |
3849 | ? ofoperation_has_out_port(rule->pending, m->out_port) | |
3850 | : ofproto_rule_has_out_port(rule, m->out_port))) { | |
3851 | return; | |
3852 | } | |
3853 | ||
3854 | if (seqno) { | |
3855 | if (rule->add_seqno > seqno) { | |
3856 | update = NXFMF_ADD | NXFMF_MODIFY; | |
3857 | } else if (rule->modify_seqno > seqno) { | |
3858 | update = NXFMF_MODIFY; | |
3859 | } else { | |
3860 | return; | |
3861 | } | |
3862 | ||
3863 | if (!(m->flags & update)) { | |
3864 | return; | |
3865 | } | |
3866 | } else { | |
3867 | update = NXFMF_INITIAL; | |
3868 | } | |
3869 | ||
3870 | if (!rule->monitor_flags) { | |
3871 | list_push_back(rules, &rule->ofproto_node); | |
3872 | } | |
3873 | rule->monitor_flags |= update | (m->flags & NXFMF_ACTIONS); | |
3874 | } | |
3875 | ||
3876 | static void | |
3877 | ofproto_collect_ofmonitor_refresh_rules(const struct ofmonitor *m, | |
3878 | uint64_t seqno, | |
3879 | struct list *rules) | |
3880 | { | |
3881 | const struct ofproto *ofproto = ofconn_get_ofproto(m->ofconn); | |
3882 | const struct ofoperation *op; | |
3883 | const struct oftable *table; | |
81a76618 | 3884 | struct cls_rule target; |
2b07c8b1 | 3885 | |
5cb7a798 | 3886 | cls_rule_init_from_minimatch(&target, &m->match, 0); |
2b07c8b1 BP |
3887 | FOR_EACH_MATCHING_TABLE (table, m->table_id, ofproto) { |
3888 | struct cls_cursor cursor; | |
3889 | struct rule *rule; | |
3890 | ||
81a76618 | 3891 | cls_cursor_init(&cursor, &table->cls, &target); |
2b07c8b1 BP |
3892 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
3893 | assert(!rule->pending); /* XXX */ | |
3894 | ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules); | |
3895 | } | |
3896 | } | |
3897 | ||
3898 | HMAP_FOR_EACH (op, hmap_node, &ofproto->deletions) { | |
3899 | struct rule *rule = op->rule; | |
3900 | ||
3901 | if (((m->table_id == 0xff | |
3902 | ? !(ofproto->tables[rule->table_id].flags & OFTABLE_HIDDEN) | |
3903 | : m->table_id == rule->table_id)) | |
81a76618 | 3904 | && cls_rule_is_loose_match(&rule->cr, &target.match)) { |
2b07c8b1 BP |
3905 | ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules); |
3906 | } | |
3907 | } | |
48d28ac1 | 3908 | cls_rule_destroy(&target); |
2b07c8b1 BP |
3909 | } |
3910 | ||
3911 | static void | |
3912 | ofproto_collect_ofmonitor_initial_rules(struct ofmonitor *m, | |
3913 | struct list *rules) | |
3914 | { | |
3915 | if (m->flags & NXFMF_INITIAL) { | |
3916 | ofproto_collect_ofmonitor_refresh_rules(m, 0, rules); | |
3917 | } | |
3918 | } | |
3919 | ||
3920 | void | |
3921 | ofmonitor_collect_resume_rules(struct ofmonitor *m, | |
3922 | uint64_t seqno, struct list *rules) | |
3923 | { | |
3924 | ofproto_collect_ofmonitor_refresh_rules(m, seqno, rules); | |
3925 | } | |
3926 | ||
3927 | static enum ofperr | |
982697a4 | 3928 | handle_flow_monitor_request(struct ofconn *ofconn, const struct ofp_header *oh) |
2b07c8b1 BP |
3929 | { |
3930 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
3931 | struct ofmonitor **monitors; | |
3932 | size_t n_monitors, allocated_monitors; | |
3933 | struct list replies; | |
3934 | enum ofperr error; | |
3935 | struct list rules; | |
3936 | struct ofpbuf b; | |
3937 | size_t i; | |
3938 | ||
3939 | error = 0; | |
982697a4 | 3940 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
2b07c8b1 BP |
3941 | monitors = NULL; |
3942 | n_monitors = allocated_monitors = 0; | |
3943 | for (;;) { | |
3944 | struct ofputil_flow_monitor_request request; | |
3945 | struct ofmonitor *m; | |
3946 | int retval; | |
3947 | ||
3948 | retval = ofputil_decode_flow_monitor_request(&request, &b); | |
3949 | if (retval == EOF) { | |
3950 | break; | |
3951 | } else if (retval) { | |
3952 | error = retval; | |
3953 | goto error; | |
3954 | } | |
3955 | ||
3956 | if (request.table_id != 0xff | |
3957 | && request.table_id >= ofproto->n_tables) { | |
3958 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
3959 | goto error; | |
3960 | } | |
3961 | ||
3962 | error = ofmonitor_create(&request, ofconn, &m); | |
3963 | if (error) { | |
3964 | goto error; | |
3965 | } | |
3966 | ||
3967 | if (n_monitors >= allocated_monitors) { | |
3968 | monitors = x2nrealloc(monitors, &allocated_monitors, | |
3969 | sizeof *monitors); | |
3970 | } | |
3971 | monitors[n_monitors++] = m; | |
3972 | } | |
3973 | ||
3974 | list_init(&rules); | |
3975 | for (i = 0; i < n_monitors; i++) { | |
3976 | ofproto_collect_ofmonitor_initial_rules(monitors[i], &rules); | |
3977 | } | |
3978 | ||
982697a4 | 3979 | ofpmp_init(&replies, oh); |
2b07c8b1 BP |
3980 | ofmonitor_compose_refresh_updates(&rules, &replies); |
3981 | ofconn_send_replies(ofconn, &replies); | |
3982 | ||
3983 | free(monitors); | |
3984 | ||
3985 | return 0; | |
3986 | ||
3987 | error: | |
3988 | for (i = 0; i < n_monitors; i++) { | |
3989 | ofmonitor_destroy(monitors[i]); | |
3990 | } | |
3991 | free(monitors); | |
3992 | return error; | |
3993 | } | |
3994 | ||
3995 | static enum ofperr | |
3996 | handle_flow_monitor_cancel(struct ofconn *ofconn, const struct ofp_header *oh) | |
3997 | { | |
3998 | struct ofmonitor *m; | |
3999 | uint32_t id; | |
4000 | ||
4001 | id = ofputil_decode_flow_monitor_cancel(oh); | |
4002 | m = ofmonitor_lookup(ofconn, id); | |
4003 | if (!m) { | |
4004 | return OFPERR_NXBRC_FM_BAD_ID; | |
4005 | } | |
4006 | ||
4007 | ofmonitor_destroy(m); | |
4008 | return 0; | |
4009 | } | |
4010 | ||
90bf1e07 | 4011 | static enum ofperr |
d1e2cf21 | 4012 | handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg) |
064af421 | 4013 | { |
d1e2cf21 | 4014 | const struct ofp_header *oh = msg->data; |
982697a4 | 4015 | enum ofptype type; |
90bf1e07 | 4016 | enum ofperr error; |
064af421 | 4017 | |
982697a4 | 4018 | error = ofptype_decode(&type, oh); |
d1e2cf21 BP |
4019 | if (error) { |
4020 | return error; | |
4021 | } | |
064af421 | 4022 | |
982697a4 | 4023 | switch (type) { |
d1e2cf21 | 4024 | /* OpenFlow requests. */ |
982697a4 | 4025 | case OFPTYPE_ECHO_REQUEST: |
d1e2cf21 | 4026 | return handle_echo_request(ofconn, oh); |
064af421 | 4027 | |
982697a4 | 4028 | case OFPTYPE_FEATURES_REQUEST: |
d1e2cf21 | 4029 | return handle_features_request(ofconn, oh); |
064af421 | 4030 | |
982697a4 | 4031 | case OFPTYPE_GET_CONFIG_REQUEST: |
d1e2cf21 | 4032 | return handle_get_config_request(ofconn, oh); |
064af421 | 4033 | |
982697a4 BP |
4034 | case OFPTYPE_SET_CONFIG: |
4035 | return handle_set_config(ofconn, oh); | |
064af421 | 4036 | |
982697a4 BP |
4037 | case OFPTYPE_PACKET_OUT: |
4038 | return handle_packet_out(ofconn, oh); | |
064af421 | 4039 | |
982697a4 | 4040 | case OFPTYPE_PORT_MOD: |
d1e2cf21 | 4041 | return handle_port_mod(ofconn, oh); |
064af421 | 4042 | |
982697a4 | 4043 | case OFPTYPE_FLOW_MOD: |
2e4f5fcf | 4044 | return handle_flow_mod(ofconn, oh); |
064af421 | 4045 | |
982697a4 | 4046 | case OFPTYPE_BARRIER_REQUEST: |
d1e2cf21 | 4047 | return handle_barrier_request(ofconn, oh); |
064af421 | 4048 | |
d1e2cf21 | 4049 | /* OpenFlow replies. */ |
982697a4 | 4050 | case OFPTYPE_ECHO_REPLY: |
d1e2cf21 | 4051 | return 0; |
246e61ea | 4052 | |
d1e2cf21 | 4053 | /* Nicira extension requests. */ |
982697a4 | 4054 | case OFPTYPE_ROLE_REQUEST: |
d1e2cf21 BP |
4055 | return handle_role_request(ofconn, oh); |
4056 | ||
982697a4 | 4057 | case OFPTYPE_FLOW_MOD_TABLE_ID: |
6c1491fb | 4058 | return handle_nxt_flow_mod_table_id(ofconn, oh); |
d1e2cf21 | 4059 | |
982697a4 | 4060 | case OFPTYPE_SET_FLOW_FORMAT: |
d1e2cf21 BP |
4061 | return handle_nxt_set_flow_format(ofconn, oh); |
4062 | ||
982697a4 | 4063 | case OFPTYPE_SET_PACKET_IN_FORMAT: |
54834960 EJ |
4064 | return handle_nxt_set_packet_in_format(ofconn, oh); |
4065 | ||
982697a4 | 4066 | case OFPTYPE_SET_CONTROLLER_ID: |
a7349929 BP |
4067 | return handle_nxt_set_controller_id(ofconn, oh); |
4068 | ||
982697a4 | 4069 | case OFPTYPE_FLOW_AGE: |
f27f2134 BP |
4070 | /* Nothing to do. */ |
4071 | return 0; | |
4072 | ||
982697a4 | 4073 | case OFPTYPE_FLOW_MONITOR_CANCEL: |
2b07c8b1 BP |
4074 | return handle_flow_monitor_cancel(ofconn, oh); |
4075 | ||
982697a4 | 4076 | case OFPTYPE_SET_ASYNC_CONFIG: |
80d5aefd BP |
4077 | return handle_nxt_set_async_config(ofconn, oh); |
4078 | ||
349adfb2 | 4079 | /* Statistics requests. */ |
982697a4 BP |
4080 | case OFPTYPE_DESC_STATS_REQUEST: |
4081 | return handle_desc_stats_request(ofconn, oh); | |
4082 | ||
4083 | case OFPTYPE_FLOW_STATS_REQUEST: | |
4084 | return handle_flow_stats_request(ofconn, oh); | |
4085 | ||
4086 | case OFPTYPE_AGGREGATE_STATS_REQUEST: | |
4087 | return handle_aggregate_stats_request(ofconn, oh); | |
4088 | ||
4089 | case OFPTYPE_TABLE_STATS_REQUEST: | |
4090 | return handle_table_stats_request(ofconn, oh); | |
4091 | ||
4092 | case OFPTYPE_PORT_STATS_REQUEST: | |
4093 | return handle_port_stats_request(ofconn, oh); | |
4094 | ||
4095 | case OFPTYPE_QUEUE_STATS_REQUEST: | |
4096 | return handle_queue_stats_request(ofconn, oh); | |
4097 | ||
4098 | case OFPTYPE_PORT_DESC_STATS_REQUEST: | |
4099 | return handle_port_desc_stats_request(ofconn, oh); | |
4100 | ||
4101 | case OFPTYPE_FLOW_MONITOR_STATS_REQUEST: | |
4102 | return handle_flow_monitor_request(ofconn, oh); | |
4103 | ||
2e1ae200 JR |
4104 | /* FIXME: Change the following once they are implemented: */ |
4105 | case OFPTYPE_GET_ASYNC_REQUEST: | |
4106 | case OFPTYPE_METER_MOD: | |
4107 | case OFPTYPE_GROUP_REQUEST: | |
4108 | case OFPTYPE_GROUP_DESC_REQUEST: | |
4109 | case OFPTYPE_GROUP_FEATURES_REQUEST: | |
4110 | case OFPTYPE_METER_REQUEST: | |
4111 | case OFPTYPE_METER_CONFIG_REQUEST: | |
4112 | case OFPTYPE_METER_FEATURES_REQUEST: | |
4113 | case OFPTYPE_TABLE_FEATURES_REQUEST: | |
4114 | return OFPERR_OFPBRC_BAD_TYPE; | |
4115 | ||
982697a4 BP |
4116 | case OFPTYPE_HELLO: |
4117 | case OFPTYPE_ERROR: | |
4118 | case OFPTYPE_FEATURES_REPLY: | |
4119 | case OFPTYPE_GET_CONFIG_REPLY: | |
4120 | case OFPTYPE_PACKET_IN: | |
4121 | case OFPTYPE_FLOW_REMOVED: | |
4122 | case OFPTYPE_PORT_STATUS: | |
4123 | case OFPTYPE_BARRIER_REPLY: | |
4124 | case OFPTYPE_DESC_STATS_REPLY: | |
4125 | case OFPTYPE_FLOW_STATS_REPLY: | |
4126 | case OFPTYPE_QUEUE_STATS_REPLY: | |
4127 | case OFPTYPE_PORT_STATS_REPLY: | |
4128 | case OFPTYPE_TABLE_STATS_REPLY: | |
4129 | case OFPTYPE_AGGREGATE_STATS_REPLY: | |
4130 | case OFPTYPE_PORT_DESC_STATS_REPLY: | |
4131 | case OFPTYPE_ROLE_REPLY: | |
4132 | case OFPTYPE_FLOW_MONITOR_PAUSED: | |
4133 | case OFPTYPE_FLOW_MONITOR_RESUMED: | |
4134 | case OFPTYPE_FLOW_MONITOR_STATS_REPLY: | |
2e1ae200 JR |
4135 | case OFPTYPE_GET_ASYNC_REPLY: |
4136 | case OFPTYPE_GROUP_REPLY: | |
4137 | case OFPTYPE_GROUP_DESC_REPLY: | |
4138 | case OFPTYPE_GROUP_FEATURES_REPLY: | |
4139 | case OFPTYPE_METER_REPLY: | |
4140 | case OFPTYPE_METER_CONFIG_REPLY: | |
4141 | case OFPTYPE_METER_FEATURES_REPLY: | |
4142 | case OFPTYPE_TABLE_FEATURES_REPLY: | |
064af421 | 4143 | default: |
982697a4 | 4144 | return OFPERR_OFPBRC_BAD_TYPE; |
064af421 | 4145 | } |
d1e2cf21 | 4146 | } |
064af421 | 4147 | |
7ee20df1 | 4148 | static bool |
d1e2cf21 BP |
4149 | handle_openflow(struct ofconn *ofconn, struct ofpbuf *ofp_msg) |
4150 | { | |
4151 | int error = handle_openflow__(ofconn, ofp_msg); | |
7ee20df1 | 4152 | if (error && error != OFPROTO_POSTPONE) { |
1be5ff75 | 4153 | ofconn_send_error(ofconn, ofp_msg->data, error); |
064af421 | 4154 | } |
d1e2cf21 | 4155 | COVERAGE_INC(ofproto_recv_openflow); |
7ee20df1 BP |
4156 | return error != OFPROTO_POSTPONE; |
4157 | } | |
4158 | \f | |
4159 | /* Asynchronous operations. */ | |
4160 | ||
4161 | /* Creates and returns a new ofopgroup that is not associated with any | |
4162 | * OpenFlow connection. | |
4163 | * | |
4164 | * The caller should add operations to the returned group with | |
4165 | * ofoperation_create() and then submit it with ofopgroup_submit(). */ | |
4166 | static struct ofopgroup * | |
7024dffe | 4167 | ofopgroup_create_unattached(struct ofproto *ofproto) |
7ee20df1 BP |
4168 | { |
4169 | struct ofopgroup *group = xzalloc(sizeof *group); | |
4170 | group->ofproto = ofproto; | |
4171 | list_init(&group->ofproto_node); | |
4172 | list_init(&group->ops); | |
4173 | list_init(&group->ofconn_node); | |
4174 | return group; | |
4175 | } | |
4176 | ||
7024dffe BP |
4177 | /* Creates and returns a new ofopgroup for 'ofproto'. |
4178 | * | |
4179 | * If 'ofconn' is NULL, the new ofopgroup is not associated with any OpenFlow | |
4180 | * connection. The 'request' and 'buffer_id' arguments are ignored. | |
4181 | * | |
4182 | * If 'ofconn' is nonnull, then the new ofopgroup is associated with 'ofconn'. | |
4183 | * If the ofopgroup eventually fails, then the error reply will include | |
4184 | * 'request'. If the ofopgroup eventually succeeds, then the packet with | |
4185 | * buffer id 'buffer_id' on 'ofconn' will be sent by 'ofconn''s ofproto. | |
7ee20df1 BP |
4186 | * |
4187 | * The caller should add operations to the returned group with | |
4188 | * ofoperation_create() and then submit it with ofopgroup_submit(). */ | |
4189 | static struct ofopgroup * | |
7024dffe BP |
4190 | ofopgroup_create(struct ofproto *ofproto, struct ofconn *ofconn, |
4191 | const struct ofp_header *request, uint32_t buffer_id) | |
7ee20df1 | 4192 | { |
7024dffe BP |
4193 | struct ofopgroup *group = ofopgroup_create_unattached(ofproto); |
4194 | if (ofconn) { | |
4195 | size_t request_len = ntohs(request->length); | |
7ee20df1 | 4196 | |
7024dffe | 4197 | assert(ofconn_get_ofproto(ofconn) == ofproto); |
7ee20df1 | 4198 | |
7024dffe BP |
4199 | ofconn_add_opgroup(ofconn, &group->ofconn_node); |
4200 | group->ofconn = ofconn; | |
4201 | group->request = xmemdup(request, MIN(request_len, 64)); | |
4202 | group->buffer_id = buffer_id; | |
4203 | } | |
7ee20df1 BP |
4204 | return group; |
4205 | } | |
4206 | ||
4207 | /* Submits 'group' for processing. | |
4208 | * | |
4209 | * If 'group' contains no operations (e.g. none were ever added, or all of the | |
4210 | * ones that were added completed synchronously), then it is destroyed | |
4211 | * immediately. Otherwise it is added to the ofproto's list of pending | |
4212 | * groups. */ | |
4213 | static void | |
4214 | ofopgroup_submit(struct ofopgroup *group) | |
4215 | { | |
e615b0a3 BP |
4216 | if (!group->n_running) { |
4217 | ofopgroup_complete(group); | |
7ee20df1 BP |
4218 | } else { |
4219 | list_push_back(&group->ofproto->pending, &group->ofproto_node); | |
dd5616b3 | 4220 | group->ofproto->n_pending++; |
7ee20df1 BP |
4221 | } |
4222 | } | |
4223 | ||
4224 | static void | |
e615b0a3 | 4225 | ofopgroup_complete(struct ofopgroup *group) |
7ee20df1 | 4226 | { |
e615b0a3 | 4227 | struct ofproto *ofproto = group->ofproto; |
2b07c8b1 BP |
4228 | |
4229 | struct ofconn *abbrev_ofconn; | |
4230 | ovs_be32 abbrev_xid; | |
4231 | ||
e615b0a3 BP |
4232 | struct ofoperation *op, *next_op; |
4233 | int error; | |
4234 | ||
4235 | assert(!group->n_running); | |
4236 | ||
4237 | error = 0; | |
4238 | LIST_FOR_EACH (op, group_node, &group->ops) { | |
4239 | if (op->error) { | |
4240 | error = op->error; | |
4241 | break; | |
4242 | } | |
4243 | } | |
4244 | ||
4245 | if (!error && group->ofconn && group->buffer_id != UINT32_MAX) { | |
4246 | LIST_FOR_EACH (op, group_node, &group->ops) { | |
4247 | if (op->type != OFOPERATION_DELETE) { | |
4248 | struct ofpbuf *packet; | |
4249 | uint16_t in_port; | |
4250 | ||
4251 | error = ofconn_pktbuf_retrieve(group->ofconn, group->buffer_id, | |
4252 | &packet, &in_port); | |
4253 | if (packet) { | |
4254 | assert(!error); | |
4255 | error = rule_execute(op->rule, in_port, packet); | |
4256 | } | |
4257 | break; | |
4258 | } | |
4259 | } | |
4260 | } | |
4261 | ||
2b07c8b1 BP |
4262 | if (!error && !list_is_empty(&group->ofconn_node)) { |
4263 | abbrev_ofconn = group->ofconn; | |
4264 | abbrev_xid = group->request->xid; | |
4265 | } else { | |
4266 | abbrev_ofconn = NULL; | |
4267 | abbrev_xid = htonl(0); | |
4268 | } | |
e615b0a3 BP |
4269 | LIST_FOR_EACH_SAFE (op, next_op, group_node, &group->ops) { |
4270 | struct rule *rule = op->rule; | |
2b07c8b1 BP |
4271 | |
4272 | if (!op->error && !ofproto_rule_is_hidden(rule)) { | |
4273 | /* Check that we can just cast from ofoperation_type to | |
4274 | * nx_flow_update_event. */ | |
1ec3db6f EJ |
4275 | BUILD_ASSERT_DECL((enum nx_flow_update_event) OFOPERATION_ADD |
4276 | == NXFME_ADDED); | |
4277 | BUILD_ASSERT_DECL((enum nx_flow_update_event) OFOPERATION_DELETE | |
4278 | == NXFME_DELETED); | |
4279 | BUILD_ASSERT_DECL((enum nx_flow_update_event) OFOPERATION_MODIFY | |
4280 | == NXFME_MODIFIED); | |
2b07c8b1 BP |
4281 | |
4282 | ofmonitor_report(ofproto->connmgr, rule, | |
4283 | (enum nx_flow_update_event) op->type, | |
4284 | op->reason, abbrev_ofconn, abbrev_xid); | |
4285 | } | |
4286 | ||
e615b0a3 BP |
4287 | rule->pending = NULL; |
4288 | ||
4289 | switch (op->type) { | |
4290 | case OFOPERATION_ADD: | |
4291 | if (!op->error) { | |
5cb7a798 BP |
4292 | uint16_t vid_mask; |
4293 | ||
e615b0a3 | 4294 | ofproto_rule_destroy__(op->victim); |
5cb7a798 BP |
4295 | vid_mask = minimask_get_vid_mask(&rule->cr.match.mask); |
4296 | if (vid_mask == VLAN_VID_MASK) { | |
e615b0a3 | 4297 | if (ofproto->vlan_bitmap) { |
5cb7a798 | 4298 | uint16_t vid = miniflow_get_vid(&rule->cr.match.flow); |
e615b0a3 BP |
4299 | if (!bitmap_is_set(ofproto->vlan_bitmap, vid)) { |
4300 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
4301 | ofproto->vlans_changed = true; | |
4302 | } | |
4303 | } else { | |
4304 | ofproto->vlans_changed = true; | |
4305 | } | |
4306 | } | |
4307 | } else { | |
4308 | oftable_substitute_rule(rule, op->victim); | |
4309 | ofproto_rule_destroy__(rule); | |
4310 | } | |
4311 | break; | |
4312 | ||
4313 | case OFOPERATION_DELETE: | |
4314 | assert(!op->error); | |
4315 | ofproto_rule_destroy__(rule); | |
4316 | op->rule = NULL; | |
4317 | break; | |
4318 | ||
4319 | case OFOPERATION_MODIFY: | |
4320 | if (!op->error) { | |
4321 | rule->modified = time_msec(); | |
4322 | } else { | |
41792464 | 4323 | rule->flow_cookie = op->flow_cookie; |
08043761 BP |
4324 | if (op->ofpacts) { |
4325 | free(rule->ofpacts); | |
4326 | rule->ofpacts = op->ofpacts; | |
4327 | rule->ofpacts_len = op->ofpacts_len; | |
4328 | op->ofpacts = NULL; | |
4329 | op->ofpacts_len = 0; | |
4330 | } | |
e615b0a3 BP |
4331 | } |
4332 | break; | |
4333 | ||
4334 | default: | |
4335 | NOT_REACHED(); | |
4336 | } | |
4337 | ||
4338 | ofoperation_destroy(op); | |
4339 | } | |
4340 | ||
2b07c8b1 BP |
4341 | ofmonitor_flush(ofproto->connmgr); |
4342 | ||
7ee20df1 | 4343 | if (!list_is_empty(&group->ofproto_node)) { |
e615b0a3 BP |
4344 | assert(ofproto->n_pending > 0); |
4345 | ofproto->n_pending--; | |
7ee20df1 BP |
4346 | list_remove(&group->ofproto_node); |
4347 | } | |
4348 | if (!list_is_empty(&group->ofconn_node)) { | |
4349 | list_remove(&group->ofconn_node); | |
e615b0a3 BP |
4350 | if (error) { |
4351 | ofconn_send_error(group->ofconn, group->request, error); | |
7ee20df1 | 4352 | } |
e615b0a3 | 4353 | connmgr_retry(ofproto->connmgr); |
7ee20df1 BP |
4354 | } |
4355 | free(group->request); | |
4356 | free(group); | |
4357 | } | |
4358 | ||
4359 | /* Initiates a new operation on 'rule', of the specified 'type', within | |
a7d94793 BP |
4360 | * 'group'. Prior to calling, 'rule' must not have any pending operation. |
4361 | * | |
2b07c8b1 BP |
4362 | * For a 'type' of OFOPERATION_DELETE, 'reason' should specify the reason that |
4363 | * the flow is being deleted. For other 'type's, 'reason' is ignored (use 0). | |
4364 | * | |
a7d94793 BP |
4365 | * Returns the newly created ofoperation (which is also available as |
4366 | * rule->pending). */ | |
4367 | static struct ofoperation * | |
7ee20df1 | 4368 | ofoperation_create(struct ofopgroup *group, struct rule *rule, |
2b07c8b1 BP |
4369 | enum ofoperation_type type, |
4370 | enum ofp_flow_removed_reason reason) | |
7ee20df1 | 4371 | { |
a5b8d268 | 4372 | struct ofproto *ofproto = group->ofproto; |
7ee20df1 BP |
4373 | struct ofoperation *op; |
4374 | ||
4375 | assert(!rule->pending); | |
4376 | ||
4377 | op = rule->pending = xzalloc(sizeof *op); | |
4378 | op->group = group; | |
4379 | list_push_back(&group->ops, &op->group_node); | |
4380 | op->rule = rule; | |
4381 | op->type = type; | |
2b07c8b1 | 4382 | op->reason = reason; |
7ee20df1 BP |
4383 | op->flow_cookie = rule->flow_cookie; |
4384 | ||
e615b0a3 BP |
4385 | group->n_running++; |
4386 | ||
7ee20df1 | 4387 | if (type == OFOPERATION_DELETE) { |
a5b8d268 | 4388 | hmap_insert(&ofproto->deletions, &op->hmap_node, |
7ee20df1 BP |
4389 | cls_rule_hash(&rule->cr, rule->table_id)); |
4390 | } | |
a7d94793 BP |
4391 | |
4392 | return op; | |
7ee20df1 BP |
4393 | } |
4394 | ||
4395 | static void | |
4396 | ofoperation_destroy(struct ofoperation *op) | |
4397 | { | |
4398 | struct ofopgroup *group = op->group; | |
4399 | ||
4400 | if (op->rule) { | |
4401 | op->rule->pending = NULL; | |
4402 | } | |
4403 | if (op->type == OFOPERATION_DELETE) { | |
4404 | hmap_remove(&group->ofproto->deletions, &op->hmap_node); | |
4405 | } | |
4406 | list_remove(&op->group_node); | |
f25d0cf3 | 4407 | free(op->ofpacts); |
7ee20df1 | 4408 | free(op); |
7ee20df1 BP |
4409 | } |
4410 | ||
4411 | /* Indicates that 'op' completed with status 'error', which is either 0 to | |
90bf1e07 | 4412 | * indicate success or an OpenFlow error code on failure. |
7ee20df1 | 4413 | * |
a6a62132 BP |
4414 | * If 'error' is 0, indicating success, the operation will be committed |
4415 | * permanently to the flow table. There is one interesting subcase: | |
4416 | * | |
4417 | * - If 'op' is an "add flow" operation that is replacing an existing rule in | |
4418 | * the flow table (the "victim" rule) by a new one, then the caller must | |
4419 | * have uninitialized any derived state in the victim rule, as in step 5 in | |
4420 | * the "Life Cycle" in ofproto/ofproto-provider.h. ofoperation_complete() | |
4421 | * performs steps 6 and 7 for the victim rule, most notably by calling its | |
4422 | * ->rule_dealloc() function. | |
4423 | * | |
4424 | * If 'error' is nonzero, then generally the operation will be rolled back: | |
4425 | * | |
4426 | * - If 'op' is an "add flow" operation, ofproto removes the new rule or | |
4427 | * restores the original rule. The caller must have uninitialized any | |
4428 | * derived state in the new rule, as in step 5 of in the "Life Cycle" in | |
4429 | * ofproto/ofproto-provider.h. ofoperation_complete() performs steps 6 and | |
4430 | * and 7 for the new rule, calling its ->rule_dealloc() function. | |
4431 | * | |
4432 | * - If 'op' is a "modify flow" operation, ofproto restores the original | |
4433 | * actions. | |
4434 | * | |
4435 | * - 'op' must not be a "delete flow" operation. Removing a rule is not | |
4436 | * allowed to fail. It must always succeed. | |
7ee20df1 | 4437 | * |
5bee6e26 JP |
4438 | * Please see the large comment in ofproto/ofproto-provider.h titled |
4439 | * "Asynchronous Operation Support" for more information. */ | |
7ee20df1 | 4440 | void |
90bf1e07 | 4441 | ofoperation_complete(struct ofoperation *op, enum ofperr error) |
7ee20df1 BP |
4442 | { |
4443 | struct ofopgroup *group = op->group; | |
7ee20df1 | 4444 | |
e615b0a3 BP |
4445 | assert(op->rule->pending == op); |
4446 | assert(group->n_running > 0); | |
4447 | assert(!error || op->type != OFOPERATION_DELETE); | |
9075907c | 4448 | |
e615b0a3 BP |
4449 | op->error = error; |
4450 | if (!--group->n_running && !list_is_empty(&group->ofproto_node)) { | |
4451 | ofopgroup_complete(group); | |
7ee20df1 | 4452 | } |
7ee20df1 BP |
4453 | } |
4454 | ||
4455 | struct rule * | |
4456 | ofoperation_get_victim(struct ofoperation *op) | |
4457 | { | |
4458 | assert(op->type == OFOPERATION_ADD); | |
4459 | return op->victim; | |
064af421 BP |
4460 | } |
4461 | \f | |
064af421 | 4462 | static uint64_t |
fa60c019 | 4463 | pick_datapath_id(const struct ofproto *ofproto) |
064af421 | 4464 | { |
fa60c019 | 4465 | const struct ofport *port; |
064af421 | 4466 | |
abe529af | 4467 | port = ofproto_get_port(ofproto, OFPP_LOCAL); |
fa60c019 BP |
4468 | if (port) { |
4469 | uint8_t ea[ETH_ADDR_LEN]; | |
4470 | int error; | |
4471 | ||
4472 | error = netdev_get_etheraddr(port->netdev, ea); | |
064af421 BP |
4473 | if (!error) { |
4474 | return eth_addr_to_uint64(ea); | |
4475 | } | |
fbfa2911 BP |
4476 | VLOG_WARN("%s: could not get MAC address for %s (%s)", |
4477 | ofproto->name, netdev_get_name(port->netdev), | |
4478 | strerror(error)); | |
064af421 | 4479 | } |
fa60c019 | 4480 | return ofproto->fallback_dpid; |
064af421 BP |
4481 | } |
4482 | ||
4483 | static uint64_t | |
4484 | pick_fallback_dpid(void) | |
4485 | { | |
4486 | uint8_t ea[ETH_ADDR_LEN]; | |
70150daf | 4487 | eth_addr_nicira_random(ea); |
064af421 BP |
4488 | return eth_addr_to_uint64(ea); |
4489 | } | |
4490 | \f | |
254750ce BP |
4491 | /* Table overflow policy. */ |
4492 | ||
4493 | /* Chooses and returns a rule to evict from 'table'. Returns NULL if the table | |
4494 | * is not configured to evict rules or if the table contains no evictable | |
4495 | * rules. (Rules with 'evictable' set to false or with no timeouts are not | |
4496 | * evictable.) */ | |
4497 | static struct rule * | |
4498 | choose_rule_to_evict(struct oftable *table) | |
4499 | { | |
4500 | struct eviction_group *evg; | |
4501 | ||
4502 | if (!table->eviction_fields) { | |
4503 | return NULL; | |
4504 | } | |
4505 | ||
4506 | /* In the common case, the outer and inner loops here will each be entered | |
4507 | * exactly once: | |
4508 | * | |
4509 | * - The inner loop normally "return"s in its first iteration. If the | |
4510 | * eviction group has any evictable rules, then it always returns in | |
4511 | * some iteration. | |
4512 | * | |
4513 | * - The outer loop only iterates more than once if the largest eviction | |
4514 | * group has no evictable rules. | |
4515 | * | |
4516 | * - The outer loop can exit only if table's 'max_flows' is all filled up | |
4517 | * by unevictable rules'. */ | |
4518 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { | |
4519 | struct rule *rule; | |
4520 | ||
4521 | HEAP_FOR_EACH (rule, evg_node, &evg->rules) { | |
4522 | if (rule->evictable) { | |
4523 | return rule; | |
4524 | } | |
4525 | } | |
4526 | } | |
4527 | ||
4528 | return NULL; | |
4529 | } | |
4530 | ||
4531 | /* Searches 'ofproto' for tables that have more flows than their configured | |
4532 | * maximum and that have flow eviction enabled, and evicts as many flows as | |
4533 | * necessary and currently feasible from them. | |
4534 | * | |
4535 | * This triggers only when an OpenFlow table has N flows in it and then the | |
4536 | * client configures a maximum number of flows less than N. */ | |
4537 | static void | |
4538 | ofproto_evict(struct ofproto *ofproto) | |
4539 | { | |
4540 | struct ofopgroup *group; | |
4541 | struct oftable *table; | |
4542 | ||
4543 | group = ofopgroup_create_unattached(ofproto); | |
4544 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
4545 | while (classifier_count(&table->cls) > table->max_flows | |
4546 | && table->eviction_fields) { | |
4547 | struct rule *rule; | |
4548 | ||
4549 | rule = choose_rule_to_evict(table); | |
4550 | if (!rule || rule->pending) { | |
4551 | break; | |
4552 | } | |
4553 | ||
2b07c8b1 BP |
4554 | ofoperation_create(group, rule, |
4555 | OFOPERATION_DELETE, OFPRR_EVICTION); | |
254750ce BP |
4556 | oftable_remove_rule(rule); |
4557 | ofproto->ofproto_class->rule_destruct(rule); | |
4558 | } | |
4559 | } | |
4560 | ofopgroup_submit(group); | |
4561 | } | |
4562 | \f | |
4563 | /* Eviction groups. */ | |
4564 | ||
4565 | /* Returns the priority to use for an eviction_group that contains 'n_rules' | |
4566 | * rules. The priority contains low-order random bits to ensure that eviction | |
4567 | * groups with the same number of rules are prioritized randomly. */ | |
4568 | static uint32_t | |
4569 | eviction_group_priority(size_t n_rules) | |
4570 | { | |
4571 | uint16_t size = MIN(UINT16_MAX, n_rules); | |
4572 | return (size << 16) | random_uint16(); | |
4573 | } | |
4574 | ||
4575 | /* Updates 'evg', an eviction_group within 'table', following a change that | |
4576 | * adds or removes rules in 'evg'. */ | |
4577 | static void | |
4578 | eviction_group_resized(struct oftable *table, struct eviction_group *evg) | |
4579 | { | |
4580 | heap_change(&table->eviction_groups_by_size, &evg->size_node, | |
4581 | eviction_group_priority(heap_count(&evg->rules))); | |
4582 | } | |
4583 | ||
4584 | /* Destroys 'evg', an eviction_group within 'table': | |
4585 | * | |
4586 | * - Removes all the rules, if any, from 'evg'. (It doesn't destroy the | |
4587 | * rules themselves, just removes them from the eviction group.) | |
4588 | * | |
4589 | * - Removes 'evg' from 'table'. | |
4590 | * | |
4591 | * - Frees 'evg'. */ | |
4592 | static void | |
4593 | eviction_group_destroy(struct oftable *table, struct eviction_group *evg) | |
4594 | { | |
4595 | while (!heap_is_empty(&evg->rules)) { | |
4596 | struct rule *rule; | |
4597 | ||
4598 | rule = CONTAINER_OF(heap_pop(&evg->rules), struct rule, evg_node); | |
4599 | rule->eviction_group = NULL; | |
4600 | } | |
4601 | hmap_remove(&table->eviction_groups_by_id, &evg->id_node); | |
4602 | heap_remove(&table->eviction_groups_by_size, &evg->size_node); | |
4603 | heap_destroy(&evg->rules); | |
4604 | free(evg); | |
4605 | } | |
4606 | ||
4607 | /* Removes 'rule' from its eviction group, if any. */ | |
4608 | static void | |
4609 | eviction_group_remove_rule(struct rule *rule) | |
4610 | { | |
4611 | if (rule->eviction_group) { | |
4612 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
4613 | struct eviction_group *evg = rule->eviction_group; | |
4614 | ||
4615 | rule->eviction_group = NULL; | |
4616 | heap_remove(&evg->rules, &rule->evg_node); | |
4617 | if (heap_is_empty(&evg->rules)) { | |
4618 | eviction_group_destroy(table, evg); | |
4619 | } else { | |
4620 | eviction_group_resized(table, evg); | |
4621 | } | |
4622 | } | |
4623 | } | |
4624 | ||
4625 | /* Hashes the 'rule''s values for the eviction_fields of 'rule''s table, and | |
4626 | * returns the hash value. */ | |
4627 | static uint32_t | |
4628 | eviction_group_hash_rule(struct rule *rule) | |
4629 | { | |
4630 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
4631 | const struct mf_subfield *sf; | |
5cb7a798 | 4632 | struct flow flow; |
254750ce BP |
4633 | uint32_t hash; |
4634 | ||
4635 | hash = table->eviction_group_id_basis; | |
5cb7a798 | 4636 | miniflow_expand(&rule->cr.match.flow, &flow); |
254750ce BP |
4637 | for (sf = table->eviction_fields; |
4638 | sf < &table->eviction_fields[table->n_eviction_fields]; | |
4639 | sf++) | |
4640 | { | |
5cb7a798 | 4641 | if (mf_are_prereqs_ok(sf->field, &flow)) { |
254750ce BP |
4642 | union mf_value value; |
4643 | ||
5cb7a798 | 4644 | mf_get_value(sf->field, &flow, &value); |
254750ce BP |
4645 | if (sf->ofs) { |
4646 | bitwise_zero(&value, sf->field->n_bytes, 0, sf->ofs); | |
4647 | } | |
4648 | if (sf->ofs + sf->n_bits < sf->field->n_bytes * 8) { | |
4649 | unsigned int start = sf->ofs + sf->n_bits; | |
4650 | bitwise_zero(&value, sf->field->n_bytes, start, | |
4651 | sf->field->n_bytes * 8 - start); | |
4652 | } | |
4653 | hash = hash_bytes(&value, sf->field->n_bytes, hash); | |
4654 | } else { | |
4655 | hash = hash_int(hash, 0); | |
4656 | } | |
4657 | } | |
4658 | ||
4659 | return hash; | |
4660 | } | |
4661 | ||
4662 | /* Returns an eviction group within 'table' with the given 'id', creating one | |
4663 | * if necessary. */ | |
4664 | static struct eviction_group * | |
4665 | eviction_group_find(struct oftable *table, uint32_t id) | |
4666 | { | |
4667 | struct eviction_group *evg; | |
4668 | ||
4669 | HMAP_FOR_EACH_WITH_HASH (evg, id_node, id, &table->eviction_groups_by_id) { | |
4670 | return evg; | |
4671 | } | |
4672 | ||
4673 | evg = xmalloc(sizeof *evg); | |
4674 | hmap_insert(&table->eviction_groups_by_id, &evg->id_node, id); | |
4675 | heap_insert(&table->eviction_groups_by_size, &evg->size_node, | |
4676 | eviction_group_priority(0)); | |
4677 | heap_init(&evg->rules); | |
4678 | ||
4679 | return evg; | |
4680 | } | |
4681 | ||
4682 | /* Returns an eviction priority for 'rule'. The return value should be | |
4683 | * interpreted so that higher priorities make a rule more attractive candidates | |
4684 | * for eviction. */ | |
4685 | static uint32_t | |
4686 | rule_eviction_priority(struct rule *rule) | |
4687 | { | |
4688 | long long int hard_expiration; | |
4689 | long long int idle_expiration; | |
4690 | long long int expiration; | |
4691 | uint32_t expiration_offset; | |
4692 | ||
4693 | /* Calculate time of expiration. */ | |
4694 | hard_expiration = (rule->hard_timeout | |
4695 | ? rule->modified + rule->hard_timeout * 1000 | |
4696 | : LLONG_MAX); | |
4697 | idle_expiration = (rule->idle_timeout | |
4698 | ? rule->used + rule->idle_timeout * 1000 | |
4699 | : LLONG_MAX); | |
4700 | expiration = MIN(hard_expiration, idle_expiration); | |
4701 | if (expiration == LLONG_MAX) { | |
4702 | return 0; | |
4703 | } | |
4704 | ||
4705 | /* Calculate the time of expiration as a number of (approximate) seconds | |
4706 | * after program startup. | |
4707 | * | |
4708 | * This should work OK for program runs that last UINT32_MAX seconds or | |
4709 | * less. Therefore, please restart OVS at least once every 136 years. */ | |
4710 | expiration_offset = (expiration >> 10) - (time_boot_msec() >> 10); | |
4711 | ||
4712 | /* Invert the expiration offset because we're using a max-heap. */ | |
4713 | return UINT32_MAX - expiration_offset; | |
4714 | } | |
4715 | ||
4716 | /* Adds 'rule' to an appropriate eviction group for its oftable's | |
4717 | * configuration. Does nothing if 'rule''s oftable doesn't have eviction | |
4718 | * enabled, or if 'rule' is a permanent rule (one that will never expire on its | |
4719 | * own). | |
4720 | * | |
4721 | * The caller must ensure that 'rule' is not already in an eviction group. */ | |
4722 | static void | |
4723 | eviction_group_add_rule(struct rule *rule) | |
4724 | { | |
4725 | struct ofproto *ofproto = rule->ofproto; | |
4726 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
4727 | ||
4728 | if (table->eviction_fields | |
4729 | && (rule->hard_timeout || rule->idle_timeout)) { | |
4730 | struct eviction_group *evg; | |
4731 | ||
4732 | evg = eviction_group_find(table, eviction_group_hash_rule(rule)); | |
4733 | ||
4734 | rule->eviction_group = evg; | |
4735 | heap_insert(&evg->rules, &rule->evg_node, | |
4736 | rule_eviction_priority(rule)); | |
4737 | eviction_group_resized(table, evg); | |
4738 | } | |
4739 | } | |
4740 | \f | |
d0918789 BP |
4741 | /* oftables. */ |
4742 | ||
4743 | /* Initializes 'table'. */ | |
4744 | static void | |
4745 | oftable_init(struct oftable *table) | |
4746 | { | |
5c67e4af | 4747 | memset(table, 0, sizeof *table); |
d0918789 | 4748 | classifier_init(&table->cls); |
ec1c5c7e | 4749 | table->max_flows = UINT_MAX; |
d0918789 BP |
4750 | } |
4751 | ||
254750ce | 4752 | /* Destroys 'table', including its classifier and eviction groups. |
d0918789 BP |
4753 | * |
4754 | * The caller is responsible for freeing 'table' itself. */ | |
4755 | static void | |
4756 | oftable_destroy(struct oftable *table) | |
4757 | { | |
4758 | assert(classifier_is_empty(&table->cls)); | |
254750ce | 4759 | oftable_disable_eviction(table); |
d0918789 | 4760 | classifier_destroy(&table->cls); |
254750ce BP |
4761 | free(table->name); |
4762 | } | |
4763 | ||
4764 | /* Changes the name of 'table' to 'name'. If 'name' is NULL or the empty | |
4765 | * string, then 'table' will use its default name. | |
4766 | * | |
4767 | * This only affects the name exposed for a table exposed through the OpenFlow | |
4768 | * OFPST_TABLE (as printed by "ovs-ofctl dump-tables"). */ | |
4769 | static void | |
4770 | oftable_set_name(struct oftable *table, const char *name) | |
4771 | { | |
4772 | if (name && name[0]) { | |
4773 | int len = strnlen(name, OFP_MAX_TABLE_NAME_LEN); | |
4774 | if (!table->name || strncmp(name, table->name, len)) { | |
4775 | free(table->name); | |
4776 | table->name = xmemdup0(name, len); | |
4777 | } | |
4778 | } else { | |
4779 | free(table->name); | |
4780 | table->name = NULL; | |
4781 | } | |
4782 | } | |
4783 | ||
4784 | /* oftables support a choice of two policies when adding a rule would cause the | |
4785 | * number of flows in the table to exceed the configured maximum number: either | |
4786 | * they can refuse to add the new flow or they can evict some existing flow. | |
4787 | * This function configures the former policy on 'table'. */ | |
4788 | static void | |
4789 | oftable_disable_eviction(struct oftable *table) | |
4790 | { | |
4791 | if (table->eviction_fields) { | |
4792 | struct eviction_group *evg, *next; | |
4793 | ||
4794 | HMAP_FOR_EACH_SAFE (evg, next, id_node, | |
4795 | &table->eviction_groups_by_id) { | |
4796 | eviction_group_destroy(table, evg); | |
4797 | } | |
4798 | hmap_destroy(&table->eviction_groups_by_id); | |
4799 | heap_destroy(&table->eviction_groups_by_size); | |
4800 | ||
4801 | free(table->eviction_fields); | |
4802 | table->eviction_fields = NULL; | |
4803 | table->n_eviction_fields = 0; | |
4804 | } | |
4805 | } | |
4806 | ||
4807 | /* oftables support a choice of two policies when adding a rule would cause the | |
4808 | * number of flows in the table to exceed the configured maximum number: either | |
4809 | * they can refuse to add the new flow or they can evict some existing flow. | |
4810 | * This function configures the latter policy on 'table', with fairness based | |
4811 | * on the values of the 'n_fields' fields specified in 'fields'. (Specifying | |
4812 | * 'n_fields' as 0 disables fairness.) */ | |
4813 | static void | |
4814 | oftable_enable_eviction(struct oftable *table, | |
4815 | const struct mf_subfield *fields, size_t n_fields) | |
4816 | { | |
4817 | struct cls_cursor cursor; | |
4818 | struct rule *rule; | |
4819 | ||
4820 | if (table->eviction_fields | |
4821 | && n_fields == table->n_eviction_fields | |
4822 | && (!n_fields | |
4823 | || !memcmp(fields, table->eviction_fields, | |
4824 | n_fields * sizeof *fields))) { | |
4825 | /* No change. */ | |
4826 | return; | |
4827 | } | |
4828 | ||
4829 | oftable_disable_eviction(table); | |
4830 | ||
4831 | table->n_eviction_fields = n_fields; | |
4832 | table->eviction_fields = xmemdup(fields, n_fields * sizeof *fields); | |
4833 | ||
4834 | table->eviction_group_id_basis = random_uint32(); | |
4835 | hmap_init(&table->eviction_groups_by_id); | |
4836 | heap_init(&table->eviction_groups_by_size); | |
4837 | ||
4838 | cls_cursor_init(&cursor, &table->cls, NULL); | |
4839 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { | |
4840 | eviction_group_add_rule(rule); | |
4841 | } | |
d0918789 BP |
4842 | } |
4843 | ||
4844 | /* Removes 'rule' from the oftable that contains it. */ | |
4845 | static void | |
4846 | oftable_remove_rule(struct rule *rule) | |
4847 | { | |
4848 | struct ofproto *ofproto = rule->ofproto; | |
4849 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
4850 | ||
4851 | classifier_remove(&table->cls, &rule->cr); | |
254750ce | 4852 | eviction_group_remove_rule(rule); |
d0918789 BP |
4853 | } |
4854 | ||
4855 | /* Inserts 'rule' into its oftable. Removes any existing rule from 'rule''s | |
4856 | * oftable that has an identical cls_rule. Returns the rule that was removed, | |
4857 | * if any, and otherwise NULL. */ | |
4858 | static struct rule * | |
4859 | oftable_replace_rule(struct rule *rule) | |
4860 | { | |
4861 | struct ofproto *ofproto = rule->ofproto; | |
4862 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
254750ce | 4863 | struct rule *victim; |
d0918789 | 4864 | |
254750ce BP |
4865 | victim = rule_from_cls_rule(classifier_replace(&table->cls, &rule->cr)); |
4866 | if (victim) { | |
4867 | eviction_group_remove_rule(victim); | |
4868 | } | |
4869 | eviction_group_add_rule(rule); | |
4870 | return victim; | |
d0918789 BP |
4871 | } |
4872 | ||
4873 | /* Removes 'old' from its oftable then, if 'new' is nonnull, inserts 'new'. */ | |
4874 | static void | |
4875 | oftable_substitute_rule(struct rule *old, struct rule *new) | |
4876 | { | |
4877 | if (new) { | |
4878 | oftable_replace_rule(new); | |
4879 | } else { | |
4880 | oftable_remove_rule(old); | |
4881 | } | |
4882 | } | |
4883 | \f | |
abe529af | 4884 | /* unixctl commands. */ |
7aa697dd | 4885 | |
abe529af | 4886 | struct ofproto * |
2ac6bedd | 4887 | ofproto_lookup(const char *name) |
7aa697dd | 4888 | { |
2ac6bedd | 4889 | struct ofproto *ofproto; |
7aa697dd | 4890 | |
2ac6bedd BP |
4891 | HMAP_FOR_EACH_WITH_HASH (ofproto, hmap_node, hash_string(name, 0), |
4892 | &all_ofprotos) { | |
4893 | if (!strcmp(ofproto->name, name)) { | |
4894 | return ofproto; | |
4895 | } | |
7aa697dd | 4896 | } |
2ac6bedd | 4897 | return NULL; |
7aa697dd BP |
4898 | } |
4899 | ||
4900 | static void | |
0e15264f BP |
4901 | ofproto_unixctl_list(struct unixctl_conn *conn, int argc OVS_UNUSED, |
4902 | const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED) | |
7aa697dd | 4903 | { |
7aa697dd | 4904 | struct ofproto *ofproto; |
7aa697dd | 4905 | struct ds results; |
7aa697dd | 4906 | |
7aa697dd | 4907 | ds_init(&results); |
2ac6bedd BP |
4908 | HMAP_FOR_EACH (ofproto, hmap_node, &all_ofprotos) { |
4909 | ds_put_format(&results, "%s\n", ofproto->name); | |
7aa697dd | 4910 | } |
bde9f75d | 4911 | unixctl_command_reply(conn, ds_cstr(&results)); |
7aa697dd | 4912 | ds_destroy(&results); |
7aa697dd BP |
4913 | } |
4914 | ||
4915 | static void | |
4916 | ofproto_unixctl_init(void) | |
4917 | { | |
4918 | static bool registered; | |
4919 | if (registered) { | |
4920 | return; | |
4921 | } | |
4922 | registered = true; | |
4923 | ||
0e15264f BP |
4924 | unixctl_command_register("ofproto/list", "", 0, 0, |
4925 | ofproto_unixctl_list, NULL); | |
064af421 | 4926 | } |
52a90c29 BP |
4927 | \f |
4928 | /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.) | |
4929 | * | |
4930 | * This is deprecated. It is only for compatibility with broken device drivers | |
4931 | * in old versions of Linux that do not properly support VLANs when VLAN | |
4932 | * devices are not used. When broken device drivers are no longer in | |
4933 | * widespread use, we will delete these interfaces. */ | |
4934 | ||
4935 | /* Sets a 1-bit in the 4096-bit 'vlan_bitmap' for each VLAN ID that is matched | |
4936 | * (exactly) by an OpenFlow rule in 'ofproto'. */ | |
4937 | void | |
4938 | ofproto_get_vlan_usage(struct ofproto *ofproto, unsigned long int *vlan_bitmap) | |
4939 | { | |
d0918789 | 4940 | const struct oftable *oftable; |
52a90c29 BP |
4941 | |
4942 | free(ofproto->vlan_bitmap); | |
4943 | ofproto->vlan_bitmap = bitmap_allocate(4096); | |
4944 | ofproto->vlans_changed = false; | |
4945 | ||
d0918789 | 4946 | OFPROTO_FOR_EACH_TABLE (oftable, ofproto) { |
52a90c29 BP |
4947 | const struct cls_table *table; |
4948 | ||
d0918789 | 4949 | HMAP_FOR_EACH (table, hmap_node, &oftable->cls.tables) { |
5cb7a798 | 4950 | if (minimask_get_vid_mask(&table->mask) == VLAN_VID_MASK) { |
52a90c29 BP |
4951 | const struct cls_rule *rule; |
4952 | ||
4953 | HMAP_FOR_EACH (rule, hmap_node, &table->rules) { | |
5cb7a798 | 4954 | uint16_t vid = miniflow_get_vid(&rule->match.flow); |
52a90c29 BP |
4955 | bitmap_set1(vlan_bitmap, vid); |
4956 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
4957 | } | |
4958 | } | |
4959 | } | |
4960 | } | |
4961 | } | |
4962 | ||
4963 | /* Returns true if new VLANs have come into use by the flow table since the | |
4964 | * last call to ofproto_get_vlan_usage(). | |
4965 | * | |
4966 | * We don't track when old VLANs stop being used. */ | |
4967 | bool | |
4968 | ofproto_has_vlan_usage_changed(const struct ofproto *ofproto) | |
4969 | { | |
4970 | return ofproto->vlans_changed; | |
4971 | } | |
4972 | ||
4973 | /* Configures a VLAN splinter binding between the ports identified by OpenFlow | |
4974 | * port numbers 'vlandev_ofp_port' and 'realdev_ofp_port'. If | |
4975 | * 'realdev_ofp_port' is nonzero, then the VLAN device is enslaved to the real | |
4976 | * device as a VLAN splinter for VLAN ID 'vid'. If 'realdev_ofp_port' is zero, | |
4977 | * then the VLAN device is un-enslaved. */ | |
4978 | int | |
4979 | ofproto_port_set_realdev(struct ofproto *ofproto, uint16_t vlandev_ofp_port, | |
4980 | uint16_t realdev_ofp_port, int vid) | |
4981 | { | |
4982 | struct ofport *ofport; | |
4983 | int error; | |
4984 | ||
4985 | assert(vlandev_ofp_port != realdev_ofp_port); | |
4986 | ||
4987 | ofport = ofproto_get_port(ofproto, vlandev_ofp_port); | |
4988 | if (!ofport) { | |
4989 | VLOG_WARN("%s: cannot set realdev on nonexistent port %"PRIu16, | |
4990 | ofproto->name, vlandev_ofp_port); | |
4991 | return EINVAL; | |
4992 | } | |
4993 | ||
4994 | if (!ofproto->ofproto_class->set_realdev) { | |
4995 | if (!vlandev_ofp_port) { | |
4996 | return 0; | |
4997 | } | |
4998 | VLOG_WARN("%s: vlan splinters not supported", ofproto->name); | |
4999 | return EOPNOTSUPP; | |
5000 | } | |
5001 | ||
5002 | error = ofproto->ofproto_class->set_realdev(ofport, realdev_ofp_port, vid); | |
5003 | if (error) { | |
5004 | VLOG_WARN("%s: setting realdev on port %"PRIu16" (%s) failed (%s)", | |
5005 | ofproto->name, vlandev_ofp_port, | |
5006 | netdev_get_name(ofport->netdev), strerror(error)); | |
5007 | } | |
5008 | return error; | |
5009 | } |