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064af421 | 1 | /* |
cb22974d | 2 | * Copyright (c) 2009, 2010, 2011, 2012, 2013 Nicira, Inc. |
43253595 | 3 | * Copyright (c) 2010 Jean Tourrilhes - HP-Labs. |
064af421 | 4 | * |
a14bc59f BP |
5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
6 | * you may not use this file except in compliance with the License. | |
7 | * You may obtain a copy of the License at: | |
064af421 | 8 | * |
a14bc59f BP |
9 | * http://www.apache.org/licenses/LICENSE-2.0 |
10 | * | |
11 | * Unless required by applicable law or agreed to in writing, software | |
12 | * distributed under the License is distributed on an "AS IS" BASIS, | |
13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
14 | * See the License for the specific language governing permissions and | |
15 | * limitations under the License. | |
064af421 BP |
16 | */ |
17 | ||
18 | #include <config.h> | |
19 | #include "ofproto.h" | |
20 | #include <errno.h> | |
21 | #include <inttypes.h> | |
064af421 BP |
22 | #include <stdbool.h> |
23 | #include <stdlib.h> | |
448a4b2f | 24 | #include <unistd.h> |
52a90c29 | 25 | #include "bitmap.h" |
10a24935 | 26 | #include "byte-order.h" |
064af421 | 27 | #include "classifier.h" |
19a87e36 | 28 | #include "connmgr.h" |
064af421 | 29 | #include "coverage.h" |
4f2cad2c | 30 | #include "dynamic-string.h" |
ca0f572c BP |
31 | #include "hash.h" |
32 | #include "hmap.h" | |
254750ce | 33 | #include "meta-flow.h" |
064af421 | 34 | #include "netdev.h" |
09246b99 | 35 | #include "nx-match.h" |
f25d0cf3 | 36 | #include "ofp-actions.h" |
90bf1e07 | 37 | #include "ofp-errors.h" |
982697a4 | 38 | #include "ofp-msgs.h" |
064af421 | 39 | #include "ofp-print.h" |
fa37b408 | 40 | #include "ofp-util.h" |
064af421 | 41 | #include "ofpbuf.h" |
5bee6e26 | 42 | #include "ofproto-provider.h" |
064af421 BP |
43 | #include "openflow/nicira-ext.h" |
44 | #include "openflow/openflow.h" | |
064af421 BP |
45 | #include "packets.h" |
46 | #include "pinsched.h" | |
47 | #include "pktbuf.h" | |
48 | #include "poll-loop.h" | |
254750ce | 49 | #include "random.h" |
064af421 | 50 | #include "shash.h" |
0d085684 | 51 | #include "simap.h" |
b3c01ed3 | 52 | #include "sset.h" |
064af421 | 53 | #include "timeval.h" |
c4617b3c | 54 | #include "unaligned.h" |
4f2cad2c | 55 | #include "unixctl.h" |
5136ce49 | 56 | #include "vlog.h" |
064af421 | 57 | |
d98e6007 | 58 | VLOG_DEFINE_THIS_MODULE(ofproto); |
064af421 | 59 | |
d76f09ea | 60 | COVERAGE_DEFINE(ofproto_error); |
d76f09ea | 61 | COVERAGE_DEFINE(ofproto_flush); |
d76f09ea | 62 | COVERAGE_DEFINE(ofproto_no_packet_in); |
d76f09ea BP |
63 | COVERAGE_DEFINE(ofproto_packet_out); |
64 | COVERAGE_DEFINE(ofproto_queue_req); | |
65 | COVERAGE_DEFINE(ofproto_recv_openflow); | |
66 | COVERAGE_DEFINE(ofproto_reinit_ports); | |
d76f09ea BP |
67 | COVERAGE_DEFINE(ofproto_uninstallable); |
68 | COVERAGE_DEFINE(ofproto_update_port); | |
69 | ||
7ee20df1 BP |
70 | enum ofproto_state { |
71 | S_OPENFLOW, /* Processing OpenFlow commands. */ | |
254750ce | 72 | S_EVICT, /* Evicting flows from over-limit tables. */ |
7ee20df1 BP |
73 | S_FLUSH, /* Deleting all flow table rules. */ |
74 | }; | |
75 | ||
76 | enum ofoperation_type { | |
77 | OFOPERATION_ADD, | |
78 | OFOPERATION_DELETE, | |
b277c7cc BP |
79 | OFOPERATION_MODIFY, |
80 | OFOPERATION_REPLACE | |
7ee20df1 BP |
81 | }; |
82 | ||
83 | /* A single OpenFlow request can execute any number of operations. The | |
84 | * ofopgroup maintain OpenFlow state common to all of the operations, e.g. the | |
85 | * ofconn to which an error reply should be sent if necessary. | |
86 | * | |
87 | * ofproto initiates some operations internally. These operations are still | |
88 | * assigned to groups but will not have an associated ofconn. */ | |
89 | struct ofopgroup { | |
90 | struct ofproto *ofproto; /* Owning ofproto. */ | |
91 | struct list ofproto_node; /* In ofproto's "pending" list. */ | |
92 | struct list ops; /* List of "struct ofoperation"s. */ | |
e615b0a3 | 93 | int n_running; /* Number of ops still pending. */ |
7ee20df1 BP |
94 | |
95 | /* Data needed to send OpenFlow reply on failure or to send a buffered | |
96 | * packet on success. | |
97 | * | |
98 | * If list_is_empty(ofconn_node) then this ofopgroup never had an | |
99 | * associated ofconn or its ofconn's connection dropped after it initiated | |
100 | * the operation. In the latter case 'ofconn' is a wild pointer that | |
101 | * refers to freed memory, so the 'ofconn' member must be used only if | |
102 | * !list_is_empty(ofconn_node). | |
103 | */ | |
104 | struct list ofconn_node; /* In ofconn's list of pending opgroups. */ | |
105 | struct ofconn *ofconn; /* ofconn for reply (but see note above). */ | |
106 | struct ofp_header *request; /* Original request (truncated at 64 bytes). */ | |
107 | uint32_t buffer_id; /* Buffer id from original request. */ | |
7ee20df1 BP |
108 | }; |
109 | ||
7024dffe BP |
110 | static struct ofopgroup *ofopgroup_create_unattached(struct ofproto *); |
111 | static struct ofopgroup *ofopgroup_create(struct ofproto *, struct ofconn *, | |
112 | const struct ofp_header *, | |
113 | uint32_t buffer_id); | |
7ee20df1 | 114 | static void ofopgroup_submit(struct ofopgroup *); |
e615b0a3 | 115 | static void ofopgroup_complete(struct ofopgroup *); |
7ee20df1 BP |
116 | |
117 | /* A single flow table operation. */ | |
118 | struct ofoperation { | |
119 | struct ofopgroup *group; /* Owning group. */ | |
120 | struct list group_node; /* In ofopgroup's "ops" list. */ | |
121 | struct hmap_node hmap_node; /* In ofproto's "deletions" hmap. */ | |
122 | struct rule *rule; /* Rule being operated upon. */ | |
123 | enum ofoperation_type type; /* Type of operation. */ | |
08043761 | 124 | |
b277c7cc BP |
125 | /* OFOPERATION_MODIFY, OFOPERATION_REPLACE: The old actions, if the actions |
126 | * are changing. */ | |
08043761 BP |
127 | struct ofpact *ofpacts; |
128 | size_t ofpacts_len; | |
9cae45dc | 129 | uint32_t meter_id; |
08043761 | 130 | |
2b07c8b1 BP |
131 | /* OFOPERATION_DELETE. */ |
132 | enum ofp_flow_removed_reason reason; /* Reason flow was removed. */ | |
133 | ||
3f517bcd DB |
134 | ovs_be64 flow_cookie; /* Rule's old flow cookie. */ |
135 | uint16_t idle_timeout; /* Rule's old idle timeout. */ | |
136 | uint16_t hard_timeout; /* Rule's old hard timeout. */ | |
137 | enum ofputil_flow_mod_flags flags; /* Rule's old flags. */ | |
138 | enum ofperr error; /* 0 if no error. */ | |
7ee20df1 BP |
139 | }; |
140 | ||
a7d94793 BP |
141 | static struct ofoperation *ofoperation_create(struct ofopgroup *, |
142 | struct rule *, | |
2b07c8b1 BP |
143 | enum ofoperation_type, |
144 | enum ofp_flow_removed_reason); | |
7ee20df1 BP |
145 | static void ofoperation_destroy(struct ofoperation *); |
146 | ||
d0918789 BP |
147 | /* oftable. */ |
148 | static void oftable_init(struct oftable *); | |
149 | static void oftable_destroy(struct oftable *); | |
878ae780 | 150 | |
254750ce BP |
151 | static void oftable_set_name(struct oftable *, const char *name); |
152 | ||
153 | static void oftable_disable_eviction(struct oftable *); | |
154 | static void oftable_enable_eviction(struct oftable *, | |
155 | const struct mf_subfield *fields, | |
156 | size_t n_fields); | |
157 | ||
884e1dc4 | 158 | static void oftable_remove_rule(struct rule *rule) OVS_RELEASES(rule->rwlock); |
0b4f2078 EJ |
159 | static void oftable_remove_rule__(struct ofproto *ofproto, |
160 | struct classifier *cls, struct rule *rule) | |
884e1dc4 | 161 | OVS_REQ_WRLOCK(cls->rwlock) OVS_RELEASES(rule->rwlock); |
b277c7cc | 162 | static void oftable_insert_rule(struct rule *); |
064af421 | 163 | |
254750ce BP |
164 | /* A set of rules within a single OpenFlow table (oftable) that have the same |
165 | * values for the oftable's eviction_fields. A rule to be evicted, when one is | |
166 | * needed, is taken from the eviction group that contains the greatest number | |
167 | * of rules. | |
168 | * | |
169 | * An oftable owns any number of eviction groups, each of which contains any | |
170 | * number of rules. | |
171 | * | |
172 | * Membership in an eviction group is imprecise, based on the hash of the | |
173 | * oftable's eviction_fields (in the eviction_group's id_node.hash member). | |
174 | * That is, if two rules have different eviction_fields, but those | |
175 | * eviction_fields hash to the same value, then they will belong to the same | |
176 | * eviction_group anyway. | |
177 | * | |
178 | * (When eviction is not enabled on an oftable, we don't track any eviction | |
179 | * groups, to save time and space.) */ | |
180 | struct eviction_group { | |
181 | struct hmap_node id_node; /* In oftable's "eviction_groups_by_id". */ | |
182 | struct heap_node size_node; /* In oftable's "eviction_groups_by_size". */ | |
183 | struct heap rules; /* Contains "struct rule"s. */ | |
184 | }; | |
185 | ||
ad3efdcb | 186 | static bool choose_rule_to_evict(struct oftable *table, struct rule **rulep) |
884e1dc4 | 187 | OVS_TRY_WRLOCK(true, (*rulep)->rwlock); |
254750ce BP |
188 | static void ofproto_evict(struct ofproto *); |
189 | static uint32_t rule_eviction_priority(struct rule *); | |
b277c7cc BP |
190 | static void eviction_group_add_rule(struct rule *); |
191 | static void eviction_group_remove_rule(struct rule *); | |
f29152ca | 192 | |
a9b22b7f BP |
193 | /* Criteria that flow_mod and other operations use for selecting rules on |
194 | * which to operate. */ | |
195 | struct rule_criteria { | |
196 | /* An OpenFlow table or 255 for all tables. */ | |
197 | uint8_t table_id; | |
198 | ||
199 | /* OpenFlow matching criteria. Interpreted different in "loose" way by | |
200 | * collect_rules_loose() and "strict" way by collect_rules_strict(), as | |
201 | * defined in the OpenFlow spec. */ | |
202 | struct cls_rule cr; | |
203 | ||
204 | /* Matching criteria for the OpenFlow cookie. Consider a bit B in a rule's | |
205 | * cookie and the corresponding bits C in 'cookie' and M in 'cookie_mask'. | |
206 | * The rule will not be selected if M is 1 and B != C. */ | |
207 | ovs_be64 cookie; | |
208 | ovs_be64 cookie_mask; | |
209 | ||
210 | /* Selection based on actions within a rule: | |
211 | * | |
212 | * If out_port != OFPP_ANY, selects only rules that output to out_port. | |
213 | * If out_group != OFPG_ALL, select only rules that output to out_group. */ | |
214 | ofp_port_t out_port; | |
215 | uint32_t out_group; | |
216 | }; | |
217 | ||
218 | static void rule_criteria_init(struct rule_criteria *, uint8_t table_id, | |
219 | const struct match *match, | |
220 | unsigned int priority, | |
221 | ovs_be64 cookie, ovs_be64 cookie_mask, | |
222 | ofp_port_t out_port, uint32_t out_group); | |
223 | static void rule_criteria_destroy(struct rule_criteria *); | |
224 | ||
d0918789 BP |
225 | /* ofport. */ |
226 | static void ofport_destroy__(struct ofport *); | |
227 | static void ofport_destroy(struct ofport *); | |
228 | ||
229 | static void update_port(struct ofproto *, const char *devname); | |
230 | static int init_ports(struct ofproto *); | |
231 | static void reinit_ports(struct ofproto *); | |
7ee20df1 | 232 | |
254750ce | 233 | /* rule. */ |
392caac0 | 234 | static void ofproto_rule_destroy(struct rule *); |
254750ce BP |
235 | static void ofproto_rule_destroy__(struct rule *); |
236 | static void ofproto_rule_send_removed(struct rule *, uint8_t reason); | |
237 | static bool rule_is_modifiable(const struct rule *); | |
254750ce | 238 | |
d0918789 | 239 | /* OpenFlow. */ |
90bf1e07 | 240 | static enum ofperr add_flow(struct ofproto *, struct ofconn *, |
e3b56933 | 241 | struct ofputil_flow_mod *, |
90bf1e07 | 242 | const struct ofp_header *); |
b277c7cc BP |
243 | static enum ofperr modify_flows__(struct ofproto *, struct ofconn *, |
244 | struct ofputil_flow_mod *, | |
245 | const struct ofp_header *, struct list *); | |
ad3efdcb EJ |
246 | static void delete_flow__(struct rule *rule, struct ofopgroup *, |
247 | enum ofp_flow_removed_reason) | |
884e1dc4 | 248 | OVS_RELEASES(rule->rwlock); |
7395c052 | 249 | static enum ofperr add_group(struct ofproto *, struct ofputil_group_mod *); |
e03248b7 | 250 | static bool handle_openflow(struct ofconn *, const struct ofpbuf *); |
90bf1e07 | 251 | static enum ofperr handle_flow_mod__(struct ofproto *, struct ofconn *, |
e3b56933 | 252 | struct ofputil_flow_mod *, |
d0918789 | 253 | const struct ofp_header *); |
65e0be10 BP |
254 | static void calc_duration(long long int start, long long int now, |
255 | uint32_t *sec, uint32_t *nsec); | |
f29152ca | 256 | |
d0918789 BP |
257 | /* ofproto. */ |
258 | static uint64_t pick_datapath_id(const struct ofproto *); | |
259 | static uint64_t pick_fallback_dpid(void); | |
260 | static void ofproto_destroy__(struct ofproto *); | |
ada3428f | 261 | static void update_mtu(struct ofproto *, struct ofport *); |
6b3f7f02 | 262 | static void meter_delete(struct ofproto *, uint32_t first, uint32_t last); |
f29152ca | 263 | |
d0918789 | 264 | /* unixctl. */ |
abe529af | 265 | static void ofproto_unixctl_init(void); |
f29152ca | 266 | |
abe529af BP |
267 | /* All registered ofproto classes, in probe order. */ |
268 | static const struct ofproto_class **ofproto_classes; | |
269 | static size_t n_ofproto_classes; | |
270 | static size_t allocated_ofproto_classes; | |
7aa697dd | 271 | |
380f49c4 | 272 | unsigned flow_eviction_threshold = OFPROTO_FLOW_EVICTION_THRESHOLD_DEFAULT; |
448a4b2f | 273 | unsigned n_handler_threads; |
7155fa52 | 274 | enum ofproto_flow_miss_model flow_miss_model = OFPROTO_HANDLE_MISS_AUTO; |
380f49c4 | 275 | |
f797957a | 276 | /* Map from datapath name to struct ofproto, for use by unixctl commands. */ |
abe529af | 277 | static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos); |
ebe482fd | 278 | |
e1b1d06a JP |
279 | /* Initial mappings of port to OpenFlow number mappings. */ |
280 | static struct shash init_ofp_ports = SHASH_INITIALIZER(&init_ofp_ports); | |
281 | ||
abe529af | 282 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
f29152ca | 283 | |
40358701 GS |
284 | /* The default value of true waits for flow restore. */ |
285 | static bool flow_restore_wait = true; | |
286 | ||
b0408fca JP |
287 | /* Must be called to initialize the ofproto library. |
288 | * | |
289 | * The caller may pass in 'iface_hints', which contains an shash of | |
290 | * "iface_hint" elements indexed by the interface's name. The provider | |
291 | * may use these hints to describe the startup configuration in order to | |
292 | * reinitialize its state. The caller owns the provided data, so a | |
293 | * provider will make copies of anything required. An ofproto provider | |
294 | * will remove any existing state that is not described by the hint, and | |
295 | * may choose to remove it all. */ | |
296 | void | |
297 | ofproto_init(const struct shash *iface_hints) | |
abe529af | 298 | { |
e1b1d06a | 299 | struct shash_node *node; |
b0408fca | 300 | size_t i; |
f29152ca | 301 | |
b0408fca JP |
302 | ofproto_class_register(&ofproto_dpif_class); |
303 | ||
e1b1d06a JP |
304 | /* Make a local copy, since we don't own 'iface_hints' elements. */ |
305 | SHASH_FOR_EACH(node, iface_hints) { | |
306 | const struct iface_hint *orig_hint = node->data; | |
307 | struct iface_hint *new_hint = xmalloc(sizeof *new_hint); | |
308 | const char *br_type = ofproto_normalize_type(orig_hint->br_type); | |
309 | ||
310 | new_hint->br_name = xstrdup(orig_hint->br_name); | |
311 | new_hint->br_type = xstrdup(br_type); | |
312 | new_hint->ofp_port = orig_hint->ofp_port; | |
313 | ||
314 | shash_add(&init_ofp_ports, node->name, new_hint); | |
315 | } | |
316 | ||
b0408fca | 317 | for (i = 0; i < n_ofproto_classes; i++) { |
e1b1d06a | 318 | ofproto_classes[i]->init(&init_ofp_ports); |
abe529af BP |
319 | } |
320 | } | |
f29152ca | 321 | |
abe529af BP |
322 | /* 'type' should be a normalized datapath type, as returned by |
323 | * ofproto_normalize_type(). Returns the corresponding ofproto_class | |
324 | * structure, or a null pointer if there is none registered for 'type'. */ | |
325 | static const struct ofproto_class * | |
326 | ofproto_class_find__(const char *type) | |
327 | { | |
328 | size_t i; | |
f29152ca | 329 | |
abe529af BP |
330 | for (i = 0; i < n_ofproto_classes; i++) { |
331 | const struct ofproto_class *class = ofproto_classes[i]; | |
332 | struct sset types; | |
333 | bool found; | |
064af421 | 334 | |
abe529af BP |
335 | sset_init(&types); |
336 | class->enumerate_types(&types); | |
337 | found = sset_contains(&types, type); | |
338 | sset_destroy(&types); | |
bcf84111 | 339 | |
abe529af BP |
340 | if (found) { |
341 | return class; | |
342 | } | |
343 | } | |
344 | VLOG_WARN("unknown datapath type %s", type); | |
345 | return NULL; | |
346 | } | |
064af421 | 347 | |
abe529af BP |
348 | /* Registers a new ofproto class. After successful registration, new ofprotos |
349 | * of that type can be created using ofproto_create(). */ | |
350 | int | |
351 | ofproto_class_register(const struct ofproto_class *new_class) | |
352 | { | |
353 | size_t i; | |
7aa697dd | 354 | |
abe529af BP |
355 | for (i = 0; i < n_ofproto_classes; i++) { |
356 | if (ofproto_classes[i] == new_class) { | |
357 | return EEXIST; | |
358 | } | |
359 | } | |
064af421 | 360 | |
abe529af BP |
361 | if (n_ofproto_classes >= allocated_ofproto_classes) { |
362 | ofproto_classes = x2nrealloc(ofproto_classes, | |
363 | &allocated_ofproto_classes, | |
364 | sizeof *ofproto_classes); | |
365 | } | |
366 | ofproto_classes[n_ofproto_classes++] = new_class; | |
367 | return 0; | |
368 | } | |
064af421 | 369 | |
abe529af BP |
370 | /* Unregisters a datapath provider. 'type' must have been previously |
371 | * registered and not currently be in use by any ofprotos. After | |
372 | * unregistration new datapaths of that type cannot be opened using | |
373 | * ofproto_create(). */ | |
374 | int | |
375 | ofproto_class_unregister(const struct ofproto_class *class) | |
376 | { | |
377 | size_t i; | |
76ce9432 | 378 | |
abe529af BP |
379 | for (i = 0; i < n_ofproto_classes; i++) { |
380 | if (ofproto_classes[i] == class) { | |
381 | for (i++; i < n_ofproto_classes; i++) { | |
382 | ofproto_classes[i - 1] = ofproto_classes[i]; | |
383 | } | |
384 | n_ofproto_classes--; | |
385 | return 0; | |
386 | } | |
387 | } | |
388 | VLOG_WARN("attempted to unregister an ofproto class that is not " | |
389 | "registered"); | |
390 | return EAFNOSUPPORT; | |
391 | } | |
4a4cdb3b | 392 | |
f79e673f BP |
393 | /* Clears 'types' and enumerates all registered ofproto types into it. The |
394 | * caller must first initialize the sset. */ | |
395 | void | |
396 | ofproto_enumerate_types(struct sset *types) | |
397 | { | |
abe529af | 398 | size_t i; |
064af421 | 399 | |
abe529af BP |
400 | for (i = 0; i < n_ofproto_classes; i++) { |
401 | ofproto_classes[i]->enumerate_types(types); | |
402 | } | |
f79e673f | 403 | } |
064af421 | 404 | |
f79e673f BP |
405 | /* Returns the fully spelled out name for the given ofproto 'type'. |
406 | * | |
407 | * Normalized type string can be compared with strcmp(). Unnormalized type | |
408 | * string might be the same even if they have different spellings. */ | |
409 | const char * | |
410 | ofproto_normalize_type(const char *type) | |
411 | { | |
abe529af | 412 | return type && type[0] ? type : "system"; |
f79e673f | 413 | } |
064af421 | 414 | |
f79e673f BP |
415 | /* Clears 'names' and enumerates the names of all known created ofprotos with |
416 | * the given 'type'. The caller must first initialize the sset. Returns 0 if | |
417 | * successful, otherwise a positive errno value. | |
418 | * | |
419 | * Some kinds of datapaths might not be practically enumerable. This is not | |
420 | * considered an error. */ | |
421 | int | |
422 | ofproto_enumerate_names(const char *type, struct sset *names) | |
423 | { | |
abe529af BP |
424 | const struct ofproto_class *class = ofproto_class_find__(type); |
425 | return class ? class->enumerate_names(type, names) : EAFNOSUPPORT; | |
426 | } | |
7aa697dd | 427 | |
064af421 | 428 | int |
abe529af | 429 | ofproto_create(const char *datapath_name, const char *datapath_type, |
064af421 BP |
430 | struct ofproto **ofprotop) |
431 | { | |
abe529af BP |
432 | const struct ofproto_class *class; |
433 | struct ofproto *ofproto; | |
064af421 | 434 | int error; |
c2f0373a | 435 | int i; |
064af421 BP |
436 | |
437 | *ofprotop = NULL; | |
438 | ||
7aa697dd BP |
439 | ofproto_unixctl_init(); |
440 | ||
abe529af BP |
441 | datapath_type = ofproto_normalize_type(datapath_type); |
442 | class = ofproto_class_find__(datapath_type); | |
443 | if (!class) { | |
444 | VLOG_WARN("could not create datapath %s of unknown type %s", | |
445 | datapath_name, datapath_type); | |
446 | return EAFNOSUPPORT; | |
064af421 BP |
447 | } |
448 | ||
abe529af BP |
449 | ofproto = class->alloc(); |
450 | if (!ofproto) { | |
451 | VLOG_ERR("failed to allocate datapath %s of type %s", | |
452 | datapath_name, datapath_type); | |
453 | return ENOMEM; | |
454 | } | |
455 | ||
456 | /* Initialize. */ | |
457 | memset(ofproto, 0, sizeof *ofproto); | |
458 | ofproto->ofproto_class = class; | |
459 | ofproto->name = xstrdup(datapath_name); | |
460 | ofproto->type = xstrdup(datapath_type); | |
461 | hmap_insert(&all_ofprotos, &ofproto->hmap_node, | |
462 | hash_string(ofproto->name, 0)); | |
463 | ofproto->datapath_id = 0; | |
8402c74b | 464 | ofproto->forward_bpdu = false; |
abe529af | 465 | ofproto->fallback_dpid = pick_fallback_dpid(); |
061bfea4 BP |
466 | ofproto->mfr_desc = NULL; |
467 | ofproto->hw_desc = NULL; | |
468 | ofproto->sw_desc = NULL; | |
469 | ofproto->serial_desc = NULL; | |
470 | ofproto->dp_desc = NULL; | |
7257b535 | 471 | ofproto->frag_handling = OFPC_FRAG_NORMAL; |
abe529af BP |
472 | hmap_init(&ofproto->ports); |
473 | shash_init(&ofproto->port_by_name); | |
e1b1d06a | 474 | simap_init(&ofproto->ofp_requests); |
430dbb14 | 475 | ofproto->max_ports = ofp_to_u16(OFPP_MAX); |
448c2fa8 | 476 | ofproto->eviction_group_timer = LLONG_MIN; |
6c1491fb BP |
477 | ofproto->tables = NULL; |
478 | ofproto->n_tables = 0; | |
98eaac36 | 479 | hindex_init(&ofproto->cookies); |
e503cc19 | 480 | list_init(&ofproto->expirable); |
834d6caf | 481 | ovs_mutex_init_recursive(&ofproto->expirable_mutex); |
abe529af | 482 | ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name); |
7ee20df1 BP |
483 | ofproto->state = S_OPENFLOW; |
484 | list_init(&ofproto->pending); | |
dd5616b3 | 485 | ofproto->n_pending = 0; |
7ee20df1 | 486 | hmap_init(&ofproto->deletions); |
a5b8d268 BP |
487 | ofproto->n_add = ofproto->n_delete = ofproto->n_modify = 0; |
488 | ofproto->first_op = ofproto->last_op = LLONG_MIN; | |
489 | ofproto->next_op_report = LLONG_MAX; | |
490 | ofproto->op_backoff = LLONG_MIN; | |
52a90c29 BP |
491 | ofproto->vlan_bitmap = NULL; |
492 | ofproto->vlans_changed = false; | |
ada3428f | 493 | ofproto->min_mtu = INT_MAX; |
7395c052 NZ |
494 | ovs_rwlock_init(&ofproto->groups_rwlock); |
495 | hmap_init(&ofproto->groups); | |
abe529af | 496 | |
0f5f95a9 | 497 | error = ofproto->ofproto_class->construct(ofproto); |
19a87e36 | 498 | if (error) { |
abe529af | 499 | VLOG_ERR("failed to open datapath %s: %s", |
10a89ef0 | 500 | datapath_name, ovs_strerror(error)); |
abe529af | 501 | ofproto_destroy__(ofproto); |
19a87e36 BP |
502 | return error; |
503 | } | |
073e2a6f | 504 | |
e1b1d06a JP |
505 | /* The "max_ports" member should have been set by ->construct(ofproto). |
506 | * Port 0 is not a valid OpenFlow port, so mark that as unavailable. */ | |
430dbb14 | 507 | ofproto->ofp_port_ids = bitmap_allocate(ofproto->max_ports); |
e1b1d06a JP |
508 | bitmap_set1(ofproto->ofp_port_ids, 0); |
509 | ||
c2f0373a | 510 | /* Check that hidden tables, if any, are at the end. */ |
cb22974d | 511 | ovs_assert(ofproto->n_tables); |
c2f0373a BP |
512 | for (i = 0; i + 1 < ofproto->n_tables; i++) { |
513 | enum oftable_flags flags = ofproto->tables[i].flags; | |
514 | enum oftable_flags next_flags = ofproto->tables[i + 1].flags; | |
515 | ||
cb22974d | 516 | ovs_assert(!(flags & OFTABLE_HIDDEN) || next_flags & OFTABLE_HIDDEN); |
c2f0373a | 517 | } |
19a87e36 | 518 | |
abe529af | 519 | ofproto->datapath_id = pick_datapath_id(ofproto); |
abe529af | 520 | init_ports(ofproto); |
7aa697dd | 521 | |
9cae45dc JR |
522 | /* Initialize meters table. */ |
523 | if (ofproto->ofproto_class->meter_get_features) { | |
524 | ofproto->ofproto_class->meter_get_features(ofproto, | |
525 | &ofproto->meter_features); | |
526 | } else { | |
527 | memset(&ofproto->meter_features, 0, sizeof ofproto->meter_features); | |
528 | } | |
529 | ofproto->meters = xzalloc((ofproto->meter_features.max_meters + 1) | |
530 | * sizeof(struct meter *)); | |
531 | ||
abe529af | 532 | *ofprotop = ofproto; |
064af421 BP |
533 | return 0; |
534 | } | |
535 | ||
91858960 BP |
536 | /* Must be called (only) by an ofproto implementation in its constructor |
537 | * function. See the large comment on 'construct' in struct ofproto_class for | |
538 | * details. */ | |
0f5f95a9 BP |
539 | void |
540 | ofproto_init_tables(struct ofproto *ofproto, int n_tables) | |
541 | { | |
542 | struct oftable *table; | |
543 | ||
cb22974d BP |
544 | ovs_assert(!ofproto->n_tables); |
545 | ovs_assert(n_tables >= 1 && n_tables <= 255); | |
0f5f95a9 BP |
546 | |
547 | ofproto->n_tables = n_tables; | |
548 | ofproto->tables = xmalloc(n_tables * sizeof *ofproto->tables); | |
549 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
550 | oftable_init(table); | |
551 | } | |
552 | } | |
553 | ||
91858960 BP |
554 | /* To be optionally called (only) by an ofproto implementation in its |
555 | * constructor function. See the large comment on 'construct' in struct | |
556 | * ofproto_class for details. | |
557 | * | |
558 | * Sets the maximum number of ports to 'max_ports'. The ofproto generic layer | |
559 | * will then ensure that actions passed into the ofproto implementation will | |
560 | * not refer to OpenFlow ports numbered 'max_ports' or higher. If this | |
561 | * function is not called, there will be no such restriction. | |
562 | * | |
563 | * Reserved ports numbered OFPP_MAX and higher are special and not subject to | |
564 | * the 'max_ports' restriction. */ | |
565 | void | |
430dbb14 | 566 | ofproto_init_max_ports(struct ofproto *ofproto, uint16_t max_ports) |
91858960 | 567 | { |
430dbb14 | 568 | ovs_assert(max_ports <= ofp_to_u16(OFPP_MAX)); |
91858960 BP |
569 | ofproto->max_ports = max_ports; |
570 | } | |
571 | ||
e825ace2 BP |
572 | uint64_t |
573 | ofproto_get_datapath_id(const struct ofproto *ofproto) | |
574 | { | |
575 | return ofproto->datapath_id; | |
576 | } | |
577 | ||
064af421 BP |
578 | void |
579 | ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id) | |
580 | { | |
581 | uint64_t old_dpid = p->datapath_id; | |
fa60c019 | 582 | p->datapath_id = datapath_id ? datapath_id : pick_datapath_id(p); |
064af421 | 583 | if (p->datapath_id != old_dpid) { |
76ce9432 BP |
584 | /* Force all active connections to reconnect, since there is no way to |
585 | * notify a controller that the datapath ID has changed. */ | |
fa05809b | 586 | ofproto_reconnect_controllers(p); |
064af421 BP |
587 | } |
588 | } | |
589 | ||
76ce9432 BP |
590 | void |
591 | ofproto_set_controllers(struct ofproto *p, | |
592 | const struct ofproto_controller *controllers, | |
1d9ffc17 | 593 | size_t n_controllers, uint32_t allowed_versions) |
76ce9432 | 594 | { |
1d9ffc17 SH |
595 | connmgr_set_controllers(p->connmgr, controllers, n_controllers, |
596 | allowed_versions); | |
064af421 BP |
597 | } |
598 | ||
31681a5d JP |
599 | void |
600 | ofproto_set_fail_mode(struct ofproto *p, enum ofproto_fail_mode fail_mode) | |
601 | { | |
19a87e36 | 602 | connmgr_set_fail_mode(p->connmgr, fail_mode); |
31681a5d JP |
603 | } |
604 | ||
fa05809b BP |
605 | /* Drops the connections between 'ofproto' and all of its controllers, forcing |
606 | * them to reconnect. */ | |
607 | void | |
608 | ofproto_reconnect_controllers(struct ofproto *ofproto) | |
609 | { | |
19a87e36 | 610 | connmgr_reconnect(ofproto->connmgr); |
917e50e1 BP |
611 | } |
612 | ||
613 | /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s | |
614 | * in-band control should guarantee access, in the same way that in-band | |
615 | * control guarantees access to OpenFlow controllers. */ | |
616 | void | |
617 | ofproto_set_extra_in_band_remotes(struct ofproto *ofproto, | |
618 | const struct sockaddr_in *extras, size_t n) | |
619 | { | |
19a87e36 | 620 | connmgr_set_extra_in_band_remotes(ofproto->connmgr, extras, n); |
917e50e1 BP |
621 | } |
622 | ||
b1da6250 BP |
623 | /* Sets the OpenFlow queue used by flows set up by in-band control on |
624 | * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control | |
625 | * flows will use the default queue. */ | |
626 | void | |
627 | ofproto_set_in_band_queue(struct ofproto *ofproto, int queue_id) | |
628 | { | |
19a87e36 | 629 | connmgr_set_in_band_queue(ofproto->connmgr, queue_id); |
b1da6250 BP |
630 | } |
631 | ||
084f5290 SH |
632 | /* Sets the number of flows at which eviction from the kernel flow table |
633 | * will occur. */ | |
634 | void | |
380f49c4 | 635 | ofproto_set_flow_eviction_threshold(unsigned threshold) |
084f5290 | 636 | { |
380f49c4 EJ |
637 | flow_eviction_threshold = MAX(OFPROTO_FLOW_EVICTION_THRESHOLD_MIN, |
638 | threshold); | |
084f5290 SH |
639 | } |
640 | ||
7155fa52 JS |
641 | /* Sets the path for handling flow misses. */ |
642 | void | |
643 | ofproto_set_flow_miss_model(unsigned model) | |
644 | { | |
645 | flow_miss_model = model; | |
646 | } | |
647 | ||
b53055f4 | 648 | /* If forward_bpdu is true, the NORMAL action will forward frames with |
8402c74b SS |
649 | * reserved (e.g. STP) destination Ethernet addresses. if forward_bpdu is false, |
650 | * the NORMAL action will drop these frames. */ | |
651 | void | |
652 | ofproto_set_forward_bpdu(struct ofproto *ofproto, bool forward_bpdu) | |
653 | { | |
654 | bool old_val = ofproto->forward_bpdu; | |
655 | ofproto->forward_bpdu = forward_bpdu; | |
656 | if (old_val != ofproto->forward_bpdu) { | |
657 | if (ofproto->ofproto_class->forward_bpdu_changed) { | |
658 | ofproto->ofproto_class->forward_bpdu_changed(ofproto); | |
659 | } | |
b53055f4 | 660 | } |
8402c74b SS |
661 | } |
662 | ||
e764773c | 663 | /* Sets the MAC aging timeout for the OFPP_NORMAL action on 'ofproto' to |
c4069512 BP |
664 | * 'idle_time', in seconds, and the maximum number of MAC table entries to |
665 | * 'max_entries'. */ | |
e764773c | 666 | void |
c4069512 BP |
667 | ofproto_set_mac_table_config(struct ofproto *ofproto, unsigned idle_time, |
668 | size_t max_entries) | |
e764773c | 669 | { |
c4069512 BP |
670 | if (ofproto->ofproto_class->set_mac_table_config) { |
671 | ofproto->ofproto_class->set_mac_table_config(ofproto, idle_time, | |
672 | max_entries); | |
e764773c BP |
673 | } |
674 | } | |
675 | ||
448a4b2f | 676 | /* Sets number of upcall handler threads. The default is |
cc86b1f8 | 677 | * (number of online cores - 2). */ |
448a4b2f AW |
678 | void |
679 | ofproto_set_n_handler_threads(unsigned limit) | |
680 | { | |
681 | if (limit) { | |
682 | n_handler_threads = limit; | |
683 | } else { | |
cc86b1f8 EJ |
684 | int n_proc = sysconf(_SC_NPROCESSORS_ONLN); |
685 | n_handler_threads = n_proc > 2 ? n_proc - 2 : 1; | |
448a4b2f AW |
686 | } |
687 | } | |
688 | ||
8b6ff729 BP |
689 | void |
690 | ofproto_set_dp_desc(struct ofproto *p, const char *dp_desc) | |
691 | { | |
692 | free(p->dp_desc); | |
693 | p->dp_desc = dp_desc ? xstrdup(dp_desc) : NULL; | |
694 | } | |
695 | ||
064af421 | 696 | int |
81e2083f | 697 | ofproto_set_snoops(struct ofproto *ofproto, const struct sset *snoops) |
064af421 | 698 | { |
19a87e36 | 699 | return connmgr_set_snoops(ofproto->connmgr, snoops); |
064af421 BP |
700 | } |
701 | ||
702 | int | |
0193b2af JG |
703 | ofproto_set_netflow(struct ofproto *ofproto, |
704 | const struct netflow_options *nf_options) | |
064af421 | 705 | { |
abe529af BP |
706 | if (nf_options && sset_is_empty(&nf_options->collectors)) { |
707 | nf_options = NULL; | |
708 | } | |
709 | ||
710 | if (ofproto->ofproto_class->set_netflow) { | |
711 | return ofproto->ofproto_class->set_netflow(ofproto, nf_options); | |
064af421 | 712 | } else { |
abe529af | 713 | return nf_options ? EOPNOTSUPP : 0; |
064af421 BP |
714 | } |
715 | } | |
716 | ||
abe529af | 717 | int |
72b06300 BP |
718 | ofproto_set_sflow(struct ofproto *ofproto, |
719 | const struct ofproto_sflow_options *oso) | |
720 | { | |
abe529af BP |
721 | if (oso && sset_is_empty(&oso->targets)) { |
722 | oso = NULL; | |
723 | } | |
72b06300 | 724 | |
abe529af BP |
725 | if (ofproto->ofproto_class->set_sflow) { |
726 | return ofproto->ofproto_class->set_sflow(ofproto, oso); | |
72b06300 | 727 | } else { |
abe529af | 728 | return oso ? EOPNOTSUPP : 0; |
72b06300 BP |
729 | } |
730 | } | |
29089a54 RL |
731 | |
732 | int | |
733 | ofproto_set_ipfix(struct ofproto *ofproto, | |
734 | const struct ofproto_ipfix_bridge_exporter_options *bo, | |
735 | const struct ofproto_ipfix_flow_exporter_options *fo, | |
736 | size_t n_fo) | |
737 | { | |
738 | if (ofproto->ofproto_class->set_ipfix) { | |
739 | return ofproto->ofproto_class->set_ipfix(ofproto, bo, fo, n_fo); | |
740 | } else { | |
741 | return (bo || fo) ? EOPNOTSUPP : 0; | |
742 | } | |
743 | } | |
40358701 GS |
744 | |
745 | void | |
746 | ofproto_set_flow_restore_wait(bool flow_restore_wait_db) | |
747 | { | |
748 | flow_restore_wait = flow_restore_wait_db; | |
749 | } | |
750 | ||
751 | bool | |
752 | ofproto_get_flow_restore_wait(void) | |
753 | { | |
754 | return flow_restore_wait; | |
755 | } | |
756 | ||
e7934396 | 757 | \f |
21f7563c JP |
758 | /* Spanning Tree Protocol (STP) configuration. */ |
759 | ||
760 | /* Configures STP on 'ofproto' using the settings defined in 's'. If | |
761 | * 's' is NULL, disables STP. | |
762 | * | |
763 | * Returns 0 if successful, otherwise a positive errno value. */ | |
764 | int | |
765 | ofproto_set_stp(struct ofproto *ofproto, | |
766 | const struct ofproto_stp_settings *s) | |
767 | { | |
768 | return (ofproto->ofproto_class->set_stp | |
769 | ? ofproto->ofproto_class->set_stp(ofproto, s) | |
770 | : EOPNOTSUPP); | |
771 | } | |
772 | ||
773 | /* Retrieves STP status of 'ofproto' and stores it in 's'. If the | |
774 | * 'enabled' member of 's' is false, then the other members are not | |
775 | * meaningful. | |
776 | * | |
777 | * Returns 0 if successful, otherwise a positive errno value. */ | |
778 | int | |
779 | ofproto_get_stp_status(struct ofproto *ofproto, | |
780 | struct ofproto_stp_status *s) | |
781 | { | |
782 | return (ofproto->ofproto_class->get_stp_status | |
783 | ? ofproto->ofproto_class->get_stp_status(ofproto, s) | |
784 | : EOPNOTSUPP); | |
785 | } | |
786 | ||
787 | /* Configures STP on 'ofp_port' of 'ofproto' using the settings defined | |
788 | * in 's'. The caller is responsible for assigning STP port numbers | |
789 | * (using the 'port_num' member in the range of 1 through 255, inclusive) | |
790 | * and ensuring there are no duplicates. If the 's' is NULL, then STP | |
791 | * is disabled on the port. | |
792 | * | |
793 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
794 | int | |
4e022ec0 | 795 | ofproto_port_set_stp(struct ofproto *ofproto, ofp_port_t ofp_port, |
21f7563c JP |
796 | const struct ofproto_port_stp_settings *s) |
797 | { | |
798 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
799 | if (!ofport) { | |
800 | VLOG_WARN("%s: cannot configure STP on nonexistent port %"PRIu16, | |
801 | ofproto->name, ofp_port); | |
802 | return ENODEV; | |
803 | } | |
804 | ||
805 | return (ofproto->ofproto_class->set_stp_port | |
806 | ? ofproto->ofproto_class->set_stp_port(ofport, s) | |
807 | : EOPNOTSUPP); | |
808 | } | |
809 | ||
810 | /* Retrieves STP port status of 'ofp_port' on 'ofproto' and stores it in | |
811 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
812 | * are not meaningful. | |
813 | * | |
814 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
815 | int | |
4e022ec0 | 816 | ofproto_port_get_stp_status(struct ofproto *ofproto, ofp_port_t ofp_port, |
21f7563c JP |
817 | struct ofproto_port_stp_status *s) |
818 | { | |
819 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
820 | if (!ofport) { | |
b0a5c43b JP |
821 | VLOG_WARN_RL(&rl, "%s: cannot get STP status on nonexistent " |
822 | "port %"PRIu16, ofproto->name, ofp_port); | |
21f7563c JP |
823 | return ENODEV; |
824 | } | |
825 | ||
826 | return (ofproto->ofproto_class->get_stp_port_status | |
827 | ? ofproto->ofproto_class->get_stp_port_status(ofport, s) | |
828 | : EOPNOTSUPP); | |
829 | } | |
830 | \f | |
8b36f51e EJ |
831 | /* Queue DSCP configuration. */ |
832 | ||
833 | /* Registers meta-data associated with the 'n_qdscp' Qualities of Service | |
834 | * 'queues' attached to 'ofport'. This data is not intended to be sufficient | |
835 | * to implement QoS. Instead, it is used to implement features which require | |
836 | * knowledge of what queues exist on a port, and some basic information about | |
837 | * them. | |
838 | * | |
839 | * Returns 0 if successful, otherwise a positive errno value. */ | |
840 | int | |
4e022ec0 | 841 | ofproto_port_set_queues(struct ofproto *ofproto, ofp_port_t ofp_port, |
8b36f51e EJ |
842 | const struct ofproto_port_queue *queues, |
843 | size_t n_queues) | |
844 | { | |
845 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
846 | ||
847 | if (!ofport) { | |
848 | VLOG_WARN("%s: cannot set queues on nonexistent port %"PRIu16, | |
849 | ofproto->name, ofp_port); | |
850 | return ENODEV; | |
851 | } | |
852 | ||
853 | return (ofproto->ofproto_class->set_queues | |
854 | ? ofproto->ofproto_class->set_queues(ofport, queues, n_queues) | |
855 | : EOPNOTSUPP); | |
856 | } | |
857 | \f | |
e7934396 BP |
858 | /* Connectivity Fault Management configuration. */ |
859 | ||
892815f5 | 860 | /* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */ |
e7934396 | 861 | void |
4e022ec0 | 862 | ofproto_port_clear_cfm(struct ofproto *ofproto, ofp_port_t ofp_port) |
e7934396 | 863 | { |
abe529af BP |
864 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
865 | if (ofport && ofproto->ofproto_class->set_cfm) { | |
a5610457 | 866 | ofproto->ofproto_class->set_cfm(ofport, NULL); |
e7934396 BP |
867 | } |
868 | } | |
72b06300 | 869 | |
892815f5 | 870 | /* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes |
93b8df38 EJ |
871 | * basic configuration from the configuration members in 'cfm', and the remote |
872 | * maintenance point ID from remote_mpid. Ignores the statistics members of | |
873 | * 'cfm'. | |
e7934396 | 874 | * |
892815f5 | 875 | * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */ |
e7934396 | 876 | void |
4e022ec0 | 877 | ofproto_port_set_cfm(struct ofproto *ofproto, ofp_port_t ofp_port, |
a5610457 | 878 | const struct cfm_settings *s) |
e7934396 BP |
879 | { |
880 | struct ofport *ofport; | |
abe529af | 881 | int error; |
e7934396 | 882 | |
abe529af | 883 | ofport = ofproto_get_port(ofproto, ofp_port); |
e7934396 | 884 | if (!ofport) { |
892815f5 BP |
885 | VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16, |
886 | ofproto->name, ofp_port); | |
e7934396 BP |
887 | return; |
888 | } | |
889 | ||
93b8df38 EJ |
890 | /* XXX: For configuration simplicity, we only support one remote_mpid |
891 | * outside of the CFM module. It's not clear if this is the correct long | |
892 | * term solution or not. */ | |
abe529af | 893 | error = (ofproto->ofproto_class->set_cfm |
a5610457 | 894 | ? ofproto->ofproto_class->set_cfm(ofport, s) |
abe529af BP |
895 | : EOPNOTSUPP); |
896 | if (error) { | |
897 | VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed (%s)", | |
898 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
10a89ef0 | 899 | ovs_strerror(error)); |
e7934396 | 900 | } |
e7934396 | 901 | } |
e7934396 | 902 | |
ccc09689 EJ |
903 | /* Configures BFD on 'ofp_port' in 'ofproto'. This function has no effect if |
904 | * 'ofproto' does not have a port 'ofp_port'. */ | |
905 | void | |
4e022ec0 | 906 | ofproto_port_set_bfd(struct ofproto *ofproto, ofp_port_t ofp_port, |
ccc09689 EJ |
907 | const struct smap *cfg) |
908 | { | |
909 | struct ofport *ofport; | |
910 | int error; | |
911 | ||
912 | ofport = ofproto_get_port(ofproto, ofp_port); | |
913 | if (!ofport) { | |
914 | VLOG_WARN("%s: cannot configure bfd on nonexistent port %"PRIu16, | |
915 | ofproto->name, ofp_port); | |
e8999bdc | 916 | return; |
ccc09689 EJ |
917 | } |
918 | ||
919 | error = (ofproto->ofproto_class->set_bfd | |
920 | ? ofproto->ofproto_class->set_bfd(ofport, cfg) | |
921 | : EOPNOTSUPP); | |
922 | if (error) { | |
923 | VLOG_WARN("%s: bfd configuration on port %"PRIu16" (%s) failed (%s)", | |
924 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
10a89ef0 | 925 | ovs_strerror(error)); |
ccc09689 EJ |
926 | } |
927 | } | |
928 | ||
929 | /* Populates 'status' with key value pairs indicating the status of the BFD | |
930 | * session on 'ofp_port'. This information is intended to be populated in the | |
931 | * OVS database. Has no effect if 'ofp_port' is not na OpenFlow port in | |
932 | * 'ofproto'. */ | |
933 | int | |
4e022ec0 | 934 | ofproto_port_get_bfd_status(struct ofproto *ofproto, ofp_port_t ofp_port, |
ccc09689 EJ |
935 | struct smap *status) |
936 | { | |
937 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
938 | return (ofport && ofproto->ofproto_class->get_bfd_status | |
939 | ? ofproto->ofproto_class->get_bfd_status(ofport, status) | |
940 | : EOPNOTSUPP); | |
941 | } | |
942 | ||
fa066f01 BP |
943 | /* Checks the status of LACP negotiation for 'ofp_port' within ofproto. |
944 | * Returns 1 if LACP partner information for 'ofp_port' is up-to-date, | |
945 | * 0 if LACP partner information is not current (generally indicating a | |
946 | * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */ | |
947 | int | |
4e022ec0 | 948 | ofproto_port_is_lacp_current(struct ofproto *ofproto, ofp_port_t ofp_port) |
fa066f01 | 949 | { |
abe529af BP |
950 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
951 | return (ofport && ofproto->ofproto_class->port_is_lacp_current | |
952 | ? ofproto->ofproto_class->port_is_lacp_current(ofport) | |
fa066f01 | 953 | : -1); |
e7934396 | 954 | } |
e7934396 | 955 | \f |
fa066f01 | 956 | /* Bundles. */ |
e7934396 | 957 | |
abe529af BP |
958 | /* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'. |
959 | * A bundle is the same concept as a Port in OVSDB, that is, it consists of one | |
960 | * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN | |
961 | * configuration plus, if there is more than one slave, a bonding | |
962 | * configuration. | |
963 | * | |
964 | * If 'aux' is already registered then this function updates its configuration | |
965 | * to 's'. Otherwise, this function registers a new bundle. | |
966 | * | |
967 | * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL | |
968 | * port. */ | |
969 | int | |
970 | ofproto_bundle_register(struct ofproto *ofproto, void *aux, | |
971 | const struct ofproto_bundle_settings *s) | |
fa066f01 | 972 | { |
abe529af BP |
973 | return (ofproto->ofproto_class->bundle_set |
974 | ? ofproto->ofproto_class->bundle_set(ofproto, aux, s) | |
975 | : EOPNOTSUPP); | |
fa066f01 BP |
976 | } |
977 | ||
abe529af BP |
978 | /* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'. |
979 | * If no such bundle has been registered, this has no effect. */ | |
980 | int | |
981 | ofproto_bundle_unregister(struct ofproto *ofproto, void *aux) | |
e7934396 | 982 | { |
abe529af | 983 | return ofproto_bundle_register(ofproto, aux, NULL); |
e7934396 | 984 | } |
fa066f01 | 985 | |
e7934396 | 986 | \f |
abe529af BP |
987 | /* Registers a mirror associated with client data pointer 'aux' in 'ofproto'. |
988 | * If 'aux' is already registered then this function updates its configuration | |
c06bba01 | 989 | * to 's'. Otherwise, this function registers a new mirror. */ |
abe529af BP |
990 | int |
991 | ofproto_mirror_register(struct ofproto *ofproto, void *aux, | |
992 | const struct ofproto_mirror_settings *s) | |
064af421 | 993 | { |
abe529af BP |
994 | return (ofproto->ofproto_class->mirror_set |
995 | ? ofproto->ofproto_class->mirror_set(ofproto, aux, s) | |
996 | : EOPNOTSUPP); | |
064af421 BP |
997 | } |
998 | ||
abe529af BP |
999 | /* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'. |
1000 | * If no mirror has been registered, this has no effect. */ | |
1001 | int | |
1002 | ofproto_mirror_unregister(struct ofproto *ofproto, void *aux) | |
064af421 | 1003 | { |
abe529af | 1004 | return ofproto_mirror_register(ofproto, aux, NULL); |
064af421 BP |
1005 | } |
1006 | ||
9d24de3b JP |
1007 | /* Retrieves statistics from mirror associated with client data pointer |
1008 | * 'aux' in 'ofproto'. Stores packet and byte counts in 'packets' and | |
1009 | * 'bytes', respectively. If a particular counters is not supported, | |
1010 | * the appropriate argument is set to UINT64_MAX. */ | |
1011 | int | |
1012 | ofproto_mirror_get_stats(struct ofproto *ofproto, void *aux, | |
1013 | uint64_t *packets, uint64_t *bytes) | |
1014 | { | |
1015 | if (!ofproto->ofproto_class->mirror_get_stats) { | |
1016 | *packets = *bytes = UINT64_MAX; | |
1017 | return EOPNOTSUPP; | |
1018 | } | |
1019 | ||
1020 | return ofproto->ofproto_class->mirror_get_stats(ofproto, aux, | |
1021 | packets, bytes); | |
1022 | } | |
1023 | ||
abe529af BP |
1024 | /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on |
1025 | * which all packets are flooded, instead of using MAC learning. If | |
1026 | * 'flood_vlans' is NULL, then MAC learning applies to all VLANs. | |
1027 | * | |
1028 | * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL | |
1029 | * port. */ | |
1030 | int | |
1031 | ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans) | |
abdfe474 | 1032 | { |
abe529af BP |
1033 | return (ofproto->ofproto_class->set_flood_vlans |
1034 | ? ofproto->ofproto_class->set_flood_vlans(ofproto, flood_vlans) | |
1035 | : EOPNOTSUPP); | |
abdfe474 JP |
1036 | } |
1037 | ||
abe529af BP |
1038 | /* Returns true if 'aux' is a registered bundle that is currently in use as the |
1039 | * output for a mirror. */ | |
1040 | bool | |
b4affc74 | 1041 | ofproto_is_mirror_output_bundle(const struct ofproto *ofproto, void *aux) |
abe529af BP |
1042 | { |
1043 | return (ofproto->ofproto_class->is_mirror_output_bundle | |
1044 | ? ofproto->ofproto_class->is_mirror_output_bundle(ofproto, aux) | |
1045 | : false); | |
1046 | } | |
1047 | \f | |
254750ce BP |
1048 | /* Configuration of OpenFlow tables. */ |
1049 | ||
1050 | /* Returns the number of OpenFlow tables in 'ofproto'. */ | |
1051 | int | |
1052 | ofproto_get_n_tables(const struct ofproto *ofproto) | |
1053 | { | |
1054 | return ofproto->n_tables; | |
1055 | } | |
1056 | ||
1057 | /* Configures the OpenFlow table in 'ofproto' with id 'table_id' with the | |
1058 | * settings from 's'. 'table_id' must be in the range 0 through the number of | |
1059 | * OpenFlow tables in 'ofproto' minus 1, inclusive. | |
1060 | * | |
1061 | * For read-only tables, only the name may be configured. */ | |
1062 | void | |
1063 | ofproto_configure_table(struct ofproto *ofproto, int table_id, | |
1064 | const struct ofproto_table_settings *s) | |
1065 | { | |
1066 | struct oftable *table; | |
1067 | ||
cb22974d | 1068 | ovs_assert(table_id >= 0 && table_id < ofproto->n_tables); |
254750ce BP |
1069 | table = &ofproto->tables[table_id]; |
1070 | ||
1071 | oftable_set_name(table, s->name); | |
1072 | ||
1073 | if (table->flags & OFTABLE_READONLY) { | |
1074 | return; | |
1075 | } | |
1076 | ||
1077 | if (s->groups) { | |
1078 | oftable_enable_eviction(table, s->groups, s->n_groups); | |
1079 | } else { | |
1080 | oftable_disable_eviction(table); | |
1081 | } | |
1082 | ||
1083 | table->max_flows = s->max_flows; | |
0b4f2078 | 1084 | ovs_rwlock_rdlock(&table->cls.rwlock); |
254750ce BP |
1085 | if (classifier_count(&table->cls) > table->max_flows |
1086 | && table->eviction_fields) { | |
1087 | /* 'table' contains more flows than allowed. We might not be able to | |
1088 | * evict them right away because of the asynchronous nature of flow | |
1089 | * table changes. Schedule eviction for later. */ | |
1090 | switch (ofproto->state) { | |
1091 | case S_OPENFLOW: | |
1092 | ofproto->state = S_EVICT; | |
1093 | break; | |
1094 | case S_EVICT: | |
1095 | case S_FLUSH: | |
1096 | /* We're already deleting flows, nothing more to do. */ | |
1097 | break; | |
1098 | } | |
1099 | } | |
0b4f2078 | 1100 | ovs_rwlock_unlock(&table->cls.rwlock); |
254750ce BP |
1101 | } |
1102 | \f | |
81e2083f BP |
1103 | bool |
1104 | ofproto_has_snoops(const struct ofproto *ofproto) | |
1105 | { | |
1106 | return connmgr_has_snoops(ofproto->connmgr); | |
1107 | } | |
1108 | ||
064af421 | 1109 | void |
81e2083f | 1110 | ofproto_get_snoops(const struct ofproto *ofproto, struct sset *snoops) |
064af421 | 1111 | { |
19a87e36 | 1112 | connmgr_get_snoops(ofproto->connmgr, snoops); |
064af421 BP |
1113 | } |
1114 | ||
8037acb4 BP |
1115 | /* Deletes 'rule' from 'cls' within 'ofproto'. |
1116 | * | |
1117 | * The 'cls' argument is redundant (it is &ofproto->tables[rule->table_id].cls) | |
1118 | * but it allows Clang to do better checking. */ | |
7ee20df1 | 1119 | static void |
8037acb4 BP |
1120 | ofproto_delete_rule(struct ofproto *ofproto, struct classifier *cls, |
1121 | struct rule *rule) | |
1122 | OVS_REQ_WRLOCK(cls->rwlock) | |
7ee20df1 | 1123 | { |
7ee20df1 | 1124 | struct ofopgroup *group; |
8037acb4 BP |
1125 | |
1126 | ovs_assert(!rule->pending); | |
1127 | ovs_assert(cls == &ofproto->tables[rule->table_id].cls); | |
1128 | ||
1129 | group = ofopgroup_create_unattached(ofproto); | |
1130 | ofoperation_create(group, rule, OFOPERATION_DELETE, OFPRR_DELETE); | |
884e1dc4 | 1131 | ovs_rwlock_wrlock(&rule->rwlock); |
8037acb4 BP |
1132 | oftable_remove_rule__(ofproto, cls, rule); |
1133 | ofproto->ofproto_class->rule_delete(rule); | |
1134 | ofopgroup_submit(group); | |
1135 | } | |
1136 | ||
1137 | static void | |
1138 | ofproto_flush__(struct ofproto *ofproto) | |
1139 | { | |
d0918789 | 1140 | struct oftable *table; |
7ee20df1 BP |
1141 | |
1142 | if (ofproto->ofproto_class->flush) { | |
1143 | ofproto->ofproto_class->flush(ofproto); | |
1144 | } | |
1145 | ||
b772ded8 | 1146 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
7ee20df1 BP |
1147 | struct rule *rule, *next_rule; |
1148 | struct cls_cursor cursor; | |
1149 | ||
5c67e4af BP |
1150 | if (table->flags & OFTABLE_HIDDEN) { |
1151 | continue; | |
1152 | } | |
1153 | ||
0b4f2078 | 1154 | ovs_rwlock_wrlock(&table->cls.rwlock); |
d0918789 | 1155 | cls_cursor_init(&cursor, &table->cls, NULL); |
7ee20df1 BP |
1156 | CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) { |
1157 | if (!rule->pending) { | |
8037acb4 | 1158 | ofproto_delete_rule(ofproto, &table->cls, rule); |
7ee20df1 BP |
1159 | } |
1160 | } | |
0b4f2078 | 1161 | ovs_rwlock_unlock(&table->cls.rwlock); |
7ee20df1 | 1162 | } |
7ee20df1 BP |
1163 | } |
1164 | ||
7395c052 NZ |
1165 | static void delete_group(struct ofproto *ofproto, uint32_t group_id); |
1166 | ||
abe529af BP |
1167 | static void |
1168 | ofproto_destroy__(struct ofproto *ofproto) | |
1169 | { | |
d0918789 | 1170 | struct oftable *table; |
6c1491fb | 1171 | |
cb22974d BP |
1172 | ovs_assert(list_is_empty(&ofproto->pending)); |
1173 | ovs_assert(!ofproto->n_pending); | |
7ee20df1 | 1174 | |
7395c052 NZ |
1175 | delete_group(ofproto, OFPG_ALL); |
1176 | ovs_rwlock_destroy(&ofproto->groups_rwlock); | |
1177 | hmap_destroy(&ofproto->groups); | |
1178 | ||
abe529af | 1179 | connmgr_destroy(ofproto->connmgr); |
fa066f01 | 1180 | |
abe529af BP |
1181 | hmap_remove(&all_ofprotos, &ofproto->hmap_node); |
1182 | free(ofproto->name); | |
955a7127 | 1183 | free(ofproto->type); |
abe529af BP |
1184 | free(ofproto->mfr_desc); |
1185 | free(ofproto->hw_desc); | |
1186 | free(ofproto->sw_desc); | |
1187 | free(ofproto->serial_desc); | |
1188 | free(ofproto->dp_desc); | |
abe529af BP |
1189 | hmap_destroy(&ofproto->ports); |
1190 | shash_destroy(&ofproto->port_by_name); | |
e1b1d06a JP |
1191 | bitmap_free(ofproto->ofp_port_ids); |
1192 | simap_destroy(&ofproto->ofp_requests); | |
6c1491fb | 1193 | |
b772ded8 | 1194 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
d0918789 | 1195 | oftable_destroy(table); |
6c1491fb BP |
1196 | } |
1197 | free(ofproto->tables); | |
fa066f01 | 1198 | |
7ee20df1 BP |
1199 | hmap_destroy(&ofproto->deletions); |
1200 | ||
52a90c29 BP |
1201 | free(ofproto->vlan_bitmap); |
1202 | ||
83b16b98 | 1203 | ovs_mutex_destroy(&ofproto->expirable_mutex); |
abe529af BP |
1204 | ofproto->ofproto_class->dealloc(ofproto); |
1205 | } | |
fa066f01 | 1206 | |
064af421 BP |
1207 | void |
1208 | ofproto_destroy(struct ofproto *p) | |
1209 | { | |
ca0f572c | 1210 | struct ofport *ofport, *next_ofport; |
064af421 BP |
1211 | |
1212 | if (!p) { | |
1213 | return; | |
1214 | } | |
1215 | ||
717de9ff JR |
1216 | if (p->meters) { |
1217 | meter_delete(p, 1, p->meter_features.max_meters); | |
1218 | p->meter_features.max_meters = 0; | |
1219 | free(p->meters); | |
1220 | p->meters = NULL; | |
1221 | } | |
1222 | ||
7ee20df1 | 1223 | ofproto_flush__(p); |
4e8e4213 | 1224 | HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) { |
abe529af | 1225 | ofport_destroy(ofport); |
064af421 | 1226 | } |
064af421 | 1227 | |
abe529af BP |
1228 | p->ofproto_class->destruct(p); |
1229 | ofproto_destroy__(p); | |
064af421 BP |
1230 | } |
1231 | ||
abe529af BP |
1232 | /* Destroys the datapath with the respective 'name' and 'type'. With the Linux |
1233 | * kernel datapath, for example, this destroys the datapath in the kernel, and | |
1234 | * with the netdev-based datapath, it tears down the data structures that | |
1235 | * represent the datapath. | |
1236 | * | |
1237 | * The datapath should not be currently open as an ofproto. */ | |
064af421 | 1238 | int |
abe529af | 1239 | ofproto_delete(const char *name, const char *type) |
064af421 | 1240 | { |
abe529af BP |
1241 | const struct ofproto_class *class = ofproto_class_find__(type); |
1242 | return (!class ? EAFNOSUPPORT | |
1243 | : !class->del ? EACCES | |
1244 | : class->del(type, name)); | |
064af421 BP |
1245 | } |
1246 | ||
e9e28be3 BP |
1247 | static void |
1248 | process_port_change(struct ofproto *ofproto, int error, char *devname) | |
1249 | { | |
1250 | if (error == ENOBUFS) { | |
1251 | reinit_ports(ofproto); | |
1252 | } else if (!error) { | |
1253 | update_port(ofproto, devname); | |
1254 | free(devname); | |
1255 | } | |
1256 | } | |
1257 | ||
11a574a7 JP |
1258 | int |
1259 | ofproto_type_run(const char *datapath_type) | |
1260 | { | |
1261 | const struct ofproto_class *class; | |
1262 | int error; | |
1263 | ||
1264 | datapath_type = ofproto_normalize_type(datapath_type); | |
1265 | class = ofproto_class_find__(datapath_type); | |
1266 | ||
1267 | error = class->type_run ? class->type_run(datapath_type) : 0; | |
1268 | if (error && error != EAGAIN) { | |
1269 | VLOG_ERR_RL(&rl, "%s: type_run failed (%s)", | |
10a89ef0 | 1270 | datapath_type, ovs_strerror(error)); |
11a574a7 JP |
1271 | } |
1272 | return error; | |
1273 | } | |
1274 | ||
1275 | int | |
1276 | ofproto_type_run_fast(const char *datapath_type) | |
1277 | { | |
1278 | const struct ofproto_class *class; | |
1279 | int error; | |
1280 | ||
1281 | datapath_type = ofproto_normalize_type(datapath_type); | |
1282 | class = ofproto_class_find__(datapath_type); | |
1283 | ||
1284 | error = class->type_run_fast ? class->type_run_fast(datapath_type) : 0; | |
1285 | if (error && error != EAGAIN) { | |
1286 | VLOG_ERR_RL(&rl, "%s: type_run_fast failed (%s)", | |
10a89ef0 | 1287 | datapath_type, ovs_strerror(error)); |
11a574a7 JP |
1288 | } |
1289 | return error; | |
1290 | } | |
1291 | ||
1292 | void | |
1293 | ofproto_type_wait(const char *datapath_type) | |
1294 | { | |
1295 | const struct ofproto_class *class; | |
1296 | ||
1297 | datapath_type = ofproto_normalize_type(datapath_type); | |
1298 | class = ofproto_class_find__(datapath_type); | |
1299 | ||
1300 | if (class->type_wait) { | |
1301 | class->type_wait(datapath_type); | |
1302 | } | |
1303 | } | |
1304 | ||
064af421 | 1305 | int |
abe529af | 1306 | ofproto_run(struct ofproto *p) |
064af421 | 1307 | { |
7436ed80 BP |
1308 | struct sset changed_netdevs; |
1309 | const char *changed_netdev; | |
031d8bff | 1310 | struct ofport *ofport; |
064af421 | 1311 | int error; |
064af421 | 1312 | |
abe529af | 1313 | error = p->ofproto_class->run(p); |
5fcc0d00 | 1314 | if (error && error != EAGAIN) { |
10a89ef0 | 1315 | VLOG_ERR_RL(&rl, "%s: run failed (%s)", p->name, ovs_strerror(error)); |
149f577a JG |
1316 | } |
1317 | ||
448c2fa8 EJ |
1318 | /* Restore the eviction group heap invariant occasionally. */ |
1319 | if (p->eviction_group_timer < time_msec()) { | |
1320 | size_t i; | |
1321 | ||
1322 | p->eviction_group_timer = time_msec() + 1000; | |
1323 | ||
1324 | for (i = 0; i < p->n_tables; i++) { | |
1325 | struct oftable *table = &p->tables[i]; | |
1326 | struct eviction_group *evg; | |
1327 | struct cls_cursor cursor; | |
448c2fa8 EJ |
1328 | struct rule *rule; |
1329 | ||
1330 | if (!table->eviction_fields) { | |
1331 | continue; | |
1332 | } | |
1333 | ||
1334 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { | |
1335 | heap_rebuild(&evg->rules); | |
1336 | } | |
1337 | ||
1338 | ovs_rwlock_rdlock(&table->cls.rwlock); | |
c4ea31b1 | 1339 | cls_cursor_init(&cursor, &table->cls, NULL); |
448c2fa8 EJ |
1340 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
1341 | if (!rule->eviction_group | |
1342 | && (rule->idle_timeout || rule->hard_timeout)) { | |
1343 | eviction_group_add_rule(rule); | |
1344 | } | |
1345 | } | |
1346 | ovs_rwlock_unlock(&table->cls.rwlock); | |
1347 | } | |
1348 | } | |
1349 | ||
5bf0e941 | 1350 | if (p->ofproto_class->port_poll) { |
7436ed80 BP |
1351 | char *devname; |
1352 | ||
5bf0e941 BP |
1353 | while ((error = p->ofproto_class->port_poll(p, &devname)) != EAGAIN) { |
1354 | process_port_change(p, error, devname); | |
064af421 | 1355 | } |
e9e28be3 | 1356 | } |
031d8bff | 1357 | |
7436ed80 BP |
1358 | /* Update OpenFlow port status for any port whose netdev has changed. |
1359 | * | |
1360 | * Refreshing a given 'ofport' can cause an arbitrary ofport to be | |
1361 | * destroyed, so it's not safe to update ports directly from the | |
1362 | * HMAP_FOR_EACH loop, or even to use HMAP_FOR_EACH_SAFE. Instead, we | |
1363 | * need this two-phase approach. */ | |
1364 | sset_init(&changed_netdevs); | |
031d8bff EJ |
1365 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { |
1366 | unsigned int change_seq = netdev_change_seq(ofport->netdev); | |
1367 | if (ofport->change_seq != change_seq) { | |
1368 | ofport->change_seq = change_seq; | |
7436ed80 | 1369 | sset_add(&changed_netdevs, netdev_get_name(ofport->netdev)); |
031d8bff | 1370 | } |
064af421 | 1371 | } |
7436ed80 BP |
1372 | SSET_FOR_EACH (changed_netdev, &changed_netdevs) { |
1373 | update_port(p, changed_netdev); | |
1374 | } | |
1375 | sset_destroy(&changed_netdevs); | |
064af421 | 1376 | |
7ee20df1 BP |
1377 | switch (p->state) { |
1378 | case S_OPENFLOW: | |
1379 | connmgr_run(p->connmgr, handle_openflow); | |
1380 | break; | |
1381 | ||
254750ce BP |
1382 | case S_EVICT: |
1383 | connmgr_run(p->connmgr, NULL); | |
1384 | ofproto_evict(p); | |
1385 | if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) { | |
1386 | p->state = S_OPENFLOW; | |
1387 | } | |
1388 | break; | |
1389 | ||
7ee20df1 BP |
1390 | case S_FLUSH: |
1391 | connmgr_run(p->connmgr, NULL); | |
1392 | ofproto_flush__(p); | |
1393 | if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) { | |
1394 | connmgr_flushed(p->connmgr); | |
1395 | p->state = S_OPENFLOW; | |
1396 | } | |
1397 | break; | |
1398 | ||
1399 | default: | |
1400 | NOT_REACHED(); | |
1401 | } | |
064af421 | 1402 | |
a5b8d268 BP |
1403 | if (time_msec() >= p->next_op_report) { |
1404 | long long int ago = (time_msec() - p->first_op) / 1000; | |
1405 | long long int interval = (p->last_op - p->first_op) / 1000; | |
1406 | struct ds s; | |
1407 | ||
1408 | ds_init(&s); | |
1409 | ds_put_format(&s, "%d flow_mods ", | |
1410 | p->n_add + p->n_delete + p->n_modify); | |
1411 | if (interval == ago) { | |
1412 | ds_put_format(&s, "in the last %lld s", ago); | |
1413 | } else if (interval) { | |
1414 | ds_put_format(&s, "in the %lld s starting %lld s ago", | |
1415 | interval, ago); | |
1416 | } else { | |
1417 | ds_put_format(&s, "%lld s ago", ago); | |
1418 | } | |
1419 | ||
1420 | ds_put_cstr(&s, " ("); | |
1421 | if (p->n_add) { | |
1422 | ds_put_format(&s, "%d adds, ", p->n_add); | |
1423 | } | |
1424 | if (p->n_delete) { | |
1425 | ds_put_format(&s, "%d deletes, ", p->n_delete); | |
1426 | } | |
1427 | if (p->n_modify) { | |
1428 | ds_put_format(&s, "%d modifications, ", p->n_modify); | |
1429 | } | |
1430 | s.length -= 2; | |
1431 | ds_put_char(&s, ')'); | |
1432 | ||
fbfa2911 | 1433 | VLOG_INFO("%s: %s", p->name, ds_cstr(&s)); |
a5b8d268 BP |
1434 | ds_destroy(&s); |
1435 | ||
1436 | p->n_add = p->n_delete = p->n_modify = 0; | |
1437 | p->next_op_report = LLONG_MAX; | |
1438 | } | |
1439 | ||
5fcc0d00 BP |
1440 | return error; |
1441 | } | |
1442 | ||
1443 | /* Performs periodic activity required by 'ofproto' that needs to be done | |
1444 | * with the least possible latency. | |
1445 | * | |
1446 | * It makes sense to call this function a couple of times per poll loop, to | |
1447 | * provide a significant performance boost on some benchmarks with the | |
1448 | * ofproto-dpif implementation. */ | |
1449 | int | |
1450 | ofproto_run_fast(struct ofproto *p) | |
1451 | { | |
1452 | int error; | |
1453 | ||
1454 | error = p->ofproto_class->run_fast ? p->ofproto_class->run_fast(p) : 0; | |
1455 | if (error && error != EAGAIN) { | |
1456 | VLOG_ERR_RL(&rl, "%s: fastpath run failed (%s)", | |
10a89ef0 | 1457 | p->name, ovs_strerror(error)); |
5fcc0d00 BP |
1458 | } |
1459 | return error; | |
064af421 BP |
1460 | } |
1461 | ||
1462 | void | |
1463 | ofproto_wait(struct ofproto *p) | |
1464 | { | |
031d8bff EJ |
1465 | struct ofport *ofport; |
1466 | ||
abe529af | 1467 | p->ofproto_class->wait(p); |
5bf0e941 BP |
1468 | if (p->ofproto_class->port_poll_wait) { |
1469 | p->ofproto_class->port_poll_wait(p); | |
e7934396 | 1470 | } |
031d8bff EJ |
1471 | |
1472 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
1473 | if (ofport->change_seq != netdev_change_seq(ofport->netdev)) { | |
1474 | poll_immediate_wake(); | |
1475 | } | |
1476 | } | |
7ee20df1 BP |
1477 | |
1478 | switch (p->state) { | |
1479 | case S_OPENFLOW: | |
1480 | connmgr_wait(p->connmgr, true); | |
1481 | break; | |
1482 | ||
254750ce | 1483 | case S_EVICT: |
7ee20df1 BP |
1484 | case S_FLUSH: |
1485 | connmgr_wait(p->connmgr, false); | |
1486 | if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) { | |
1487 | poll_immediate_wake(); | |
1488 | } | |
1489 | break; | |
1490 | } | |
064af421 BP |
1491 | } |
1492 | ||
064af421 BP |
1493 | bool |
1494 | ofproto_is_alive(const struct ofproto *p) | |
1495 | { | |
19a87e36 | 1496 | return connmgr_has_controllers(p->connmgr); |
064af421 BP |
1497 | } |
1498 | ||
0d085684 BP |
1499 | /* Adds some memory usage statistics for 'ofproto' into 'usage', for use with |
1500 | * memory_report(). */ | |
1501 | void | |
1502 | ofproto_get_memory_usage(const struct ofproto *ofproto, struct simap *usage) | |
1503 | { | |
1504 | const struct oftable *table; | |
1505 | unsigned int n_rules; | |
1506 | ||
1507 | simap_increase(usage, "ports", hmap_count(&ofproto->ports)); | |
1508 | simap_increase(usage, "ops", | |
1509 | ofproto->n_pending + hmap_count(&ofproto->deletions)); | |
1510 | ||
1511 | n_rules = 0; | |
1512 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
0b4f2078 | 1513 | ovs_rwlock_rdlock(&table->cls.rwlock); |
0d085684 | 1514 | n_rules += classifier_count(&table->cls); |
0b4f2078 | 1515 | ovs_rwlock_unlock(&table->cls.rwlock); |
0d085684 BP |
1516 | } |
1517 | simap_increase(usage, "rules", n_rules); | |
1518 | ||
1519 | if (ofproto->ofproto_class->get_memory_usage) { | |
1520 | ofproto->ofproto_class->get_memory_usage(ofproto, usage); | |
1521 | } | |
1522 | ||
1523 | connmgr_get_memory_usage(ofproto->connmgr, usage); | |
1524 | } | |
1525 | ||
bffc0589 | 1526 | void |
2cdcb898 | 1527 | ofproto_get_ofproto_controller_info(const struct ofproto *ofproto, |
bffc0589 AE |
1528 | struct shash *info) |
1529 | { | |
19a87e36 | 1530 | connmgr_get_controller_info(ofproto->connmgr, info); |
bffc0589 AE |
1531 | } |
1532 | ||
1533 | void | |
1534 | ofproto_free_ofproto_controller_info(struct shash *info) | |
1535 | { | |
72ba2ed3 | 1536 | connmgr_free_controller_info(info); |
bffc0589 AE |
1537 | } |
1538 | ||
b5827b24 BP |
1539 | /* Makes a deep copy of 'old' into 'port'. */ |
1540 | void | |
1541 | ofproto_port_clone(struct ofproto_port *port, const struct ofproto_port *old) | |
1542 | { | |
1543 | port->name = xstrdup(old->name); | |
1544 | port->type = xstrdup(old->type); | |
1545 | port->ofp_port = old->ofp_port; | |
1546 | } | |
1547 | ||
1548 | /* Frees memory allocated to members of 'ofproto_port'. | |
3a6ccc8c | 1549 | * |
b5827b24 BP |
1550 | * Do not call this function on an ofproto_port obtained from |
1551 | * ofproto_port_dump_next(): that function retains ownership of the data in the | |
1552 | * ofproto_port. */ | |
1553 | void | |
1554 | ofproto_port_destroy(struct ofproto_port *ofproto_port) | |
1555 | { | |
1556 | free(ofproto_port->name); | |
1557 | free(ofproto_port->type); | |
1558 | } | |
1559 | ||
b5827b24 | 1560 | /* Initializes 'dump' to begin dumping the ports in an ofproto. |
3a6ccc8c | 1561 | * |
b5827b24 BP |
1562 | * This function provides no status indication. An error status for the entire |
1563 | * dump operation is provided when it is completed by calling | |
1564 | * ofproto_port_dump_done(). | |
1565 | */ | |
1566 | void | |
1567 | ofproto_port_dump_start(struct ofproto_port_dump *dump, | |
1568 | const struct ofproto *ofproto) | |
1569 | { | |
abe529af BP |
1570 | dump->ofproto = ofproto; |
1571 | dump->error = ofproto->ofproto_class->port_dump_start(ofproto, | |
1572 | &dump->state); | |
b5827b24 BP |
1573 | } |
1574 | ||
1575 | /* Attempts to retrieve another port from 'dump', which must have been created | |
1576 | * with ofproto_port_dump_start(). On success, stores a new ofproto_port into | |
1577 | * 'port' and returns true. On failure, returns false. | |
1578 | * | |
1579 | * Failure might indicate an actual error or merely that the last port has been | |
1580 | * dumped. An error status for the entire dump operation is provided when it | |
1581 | * is completed by calling ofproto_port_dump_done(). | |
1582 | * | |
1583 | * The ofproto owns the data stored in 'port'. It will remain valid until at | |
1584 | * least the next time 'dump' is passed to ofproto_port_dump_next() or | |
1585 | * ofproto_port_dump_done(). */ | |
1586 | bool | |
1587 | ofproto_port_dump_next(struct ofproto_port_dump *dump, | |
1588 | struct ofproto_port *port) | |
1589 | { | |
abe529af BP |
1590 | const struct ofproto *ofproto = dump->ofproto; |
1591 | ||
1592 | if (dump->error) { | |
1593 | return false; | |
1594 | } | |
b5827b24 | 1595 | |
abe529af BP |
1596 | dump->error = ofproto->ofproto_class->port_dump_next(ofproto, dump->state, |
1597 | port); | |
1598 | if (dump->error) { | |
1599 | ofproto->ofproto_class->port_dump_done(ofproto, dump->state); | |
1600 | return false; | |
b5827b24 | 1601 | } |
abe529af | 1602 | return true; |
b5827b24 BP |
1603 | } |
1604 | ||
1605 | /* Completes port table dump operation 'dump', which must have been created | |
1606 | * with ofproto_port_dump_start(). Returns 0 if the dump operation was | |
1607 | * error-free, otherwise a positive errno value describing the problem. */ | |
3a6ccc8c | 1608 | int |
b5827b24 | 1609 | ofproto_port_dump_done(struct ofproto_port_dump *dump) |
3a6ccc8c | 1610 | { |
abe529af BP |
1611 | const struct ofproto *ofproto = dump->ofproto; |
1612 | if (!dump->error) { | |
1613 | dump->error = ofproto->ofproto_class->port_dump_done(ofproto, | |
1614 | dump->state); | |
1615 | } | |
1616 | return dump->error == EOF ? 0 : dump->error; | |
b5827b24 BP |
1617 | } |
1618 | ||
0aeaabc8 JP |
1619 | /* Returns the type to pass to netdev_open() when a datapath of type |
1620 | * 'datapath_type' has a port of type 'port_type', for a few special | |
1621 | * cases when a netdev type differs from a port type. For example, when | |
1622 | * using the userspace datapath, a port of type "internal" needs to be | |
1623 | * opened as "tap". | |
1624 | * | |
1625 | * Returns either 'type' itself or a string literal, which must not be | |
1626 | * freed. */ | |
1627 | const char * | |
1628 | ofproto_port_open_type(const char *datapath_type, const char *port_type) | |
1629 | { | |
1630 | const struct ofproto_class *class; | |
1631 | ||
1632 | datapath_type = ofproto_normalize_type(datapath_type); | |
1633 | class = ofproto_class_find__(datapath_type); | |
1634 | if (!class) { | |
1635 | return port_type; | |
1636 | } | |
1637 | ||
1638 | return (class->port_open_type | |
1639 | ? class->port_open_type(datapath_type, port_type) | |
1640 | : port_type); | |
1641 | } | |
1642 | ||
81816a5f JP |
1643 | /* Attempts to add 'netdev' as a port on 'ofproto'. If 'ofp_portp' is |
1644 | * non-null and '*ofp_portp' is not OFPP_NONE, attempts to use that as | |
1645 | * the port's OpenFlow port number. | |
1646 | * | |
1647 | * If successful, returns 0 and sets '*ofp_portp' to the new port's | |
1648 | * OpenFlow port number (if 'ofp_portp' is non-null). On failure, | |
1649 | * returns a positive errno value and sets '*ofp_portp' to OFPP_NONE (if | |
1650 | * 'ofp_portp' is non-null). */ | |
b5827b24 BP |
1651 | int |
1652 | ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev, | |
4e022ec0 | 1653 | ofp_port_t *ofp_portp) |
b5827b24 | 1654 | { |
4e022ec0 | 1655 | ofp_port_t ofp_port = ofp_portp ? *ofp_portp : OFPP_NONE; |
3a6ccc8c BP |
1656 | int error; |
1657 | ||
e1b1d06a | 1658 | error = ofproto->ofproto_class->port_add(ofproto, netdev); |
1fa24dea | 1659 | if (!error) { |
e1b1d06a JP |
1660 | const char *netdev_name = netdev_get_name(netdev); |
1661 | ||
4e022ec0 AW |
1662 | simap_put(&ofproto->ofp_requests, netdev_name, |
1663 | ofp_to_u16(ofp_port)); | |
e1b1d06a | 1664 | update_port(ofproto, netdev_name); |
1fa24dea | 1665 | } |
b5827b24 | 1666 | if (ofp_portp) { |
e1b1d06a JP |
1667 | struct ofproto_port ofproto_port; |
1668 | ||
1669 | ofproto_port_query_by_name(ofproto, netdev_get_name(netdev), | |
1670 | &ofproto_port); | |
1671 | *ofp_portp = error ? OFPP_NONE : ofproto_port.ofp_port; | |
1672 | ofproto_port_destroy(&ofproto_port); | |
3a6ccc8c BP |
1673 | } |
1674 | return error; | |
1675 | } | |
1676 | ||
b5827b24 BP |
1677 | /* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and |
1678 | * initializes '*port' appropriately; on failure, returns a positive errno | |
1679 | * value. | |
1680 | * | |
abe529af | 1681 | * The caller owns the data in 'ofproto_port' and must free it with |
b5827b24 BP |
1682 | * ofproto_port_destroy() when it is no longer needed. */ |
1683 | int | |
1684 | ofproto_port_query_by_name(const struct ofproto *ofproto, const char *devname, | |
1685 | struct ofproto_port *port) | |
a4e2e1f2 | 1686 | { |
b5827b24 BP |
1687 | int error; |
1688 | ||
abe529af BP |
1689 | error = ofproto->ofproto_class->port_query_by_name(ofproto, devname, port); |
1690 | if (error) { | |
1691 | memset(port, 0, sizeof *port); | |
b5827b24 BP |
1692 | } |
1693 | return error; | |
a4e2e1f2 EJ |
1694 | } |
1695 | ||
b5827b24 | 1696 | /* Deletes port number 'ofp_port' from the datapath for 'ofproto'. |
3a6ccc8c | 1697 | * Returns 0 if successful, otherwise a positive errno. */ |
064af421 | 1698 | int |
4e022ec0 | 1699 | ofproto_port_del(struct ofproto *ofproto, ofp_port_t ofp_port) |
064af421 | 1700 | { |
abe529af | 1701 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1264ec95 | 1702 | const char *name = ofport ? netdev_get_name(ofport->netdev) : "<unknown>"; |
e1b1d06a | 1703 | struct simap_node *ofp_request_node; |
3cf10406 | 1704 | int error; |
cdee00fd | 1705 | |
e1b1d06a JP |
1706 | ofp_request_node = simap_find(&ofproto->ofp_requests, name); |
1707 | if (ofp_request_node) { | |
1708 | simap_delete(&ofproto->ofp_requests, ofp_request_node); | |
1709 | } | |
1710 | ||
abe529af | 1711 | error = ofproto->ofproto_class->port_del(ofproto, ofp_port); |
892815f5 | 1712 | if (!error && ofport) { |
1264ec95 BP |
1713 | /* 'name' is the netdev's name and update_port() is going to close the |
1714 | * netdev. Just in case update_port() refers to 'name' after it | |
3a6ccc8c BP |
1715 | * destroys 'ofport', make a copy of it around the update_port() |
1716 | * call. */ | |
1717 | char *devname = xstrdup(name); | |
1718 | update_port(ofproto, devname); | |
1719 | free(devname); | |
3cf10406 BP |
1720 | } |
1721 | return error; | |
064af421 BP |
1722 | } |
1723 | ||
6c1491fb | 1724 | /* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and |
fa8b054f BP |
1725 | * performs the 'n_actions' actions in 'actions'. The new flow will not |
1726 | * timeout. | |
1727 | * | |
1728 | * If cls_rule->priority is in the range of priorities supported by OpenFlow | |
1729 | * (0...65535, inclusive) then the flow will be visible to OpenFlow | |
1730 | * controllers; otherwise, it will be hidden. | |
1731 | * | |
f25d0cf3 | 1732 | * The caller retains ownership of 'cls_rule' and 'ofpacts'. |
6c1491fb BP |
1733 | * |
1734 | * This is a helper function for in-band control and fail-open. */ | |
064af421 | 1735 | void |
81a76618 BP |
1736 | ofproto_add_flow(struct ofproto *ofproto, const struct match *match, |
1737 | unsigned int priority, | |
f25d0cf3 | 1738 | const struct ofpact *ofpacts, size_t ofpacts_len) |
064af421 | 1739 | { |
7ee20df1 BP |
1740 | const struct rule *rule; |
1741 | ||
0b4f2078 | 1742 | ovs_rwlock_rdlock(&ofproto->tables[0].cls.rwlock); |
81a76618 BP |
1743 | rule = rule_from_cls_rule(classifier_find_match_exactly( |
1744 | &ofproto->tables[0].cls, match, priority)); | |
0b4f2078 | 1745 | ovs_rwlock_unlock(&ofproto->tables[0].cls.rwlock); |
f25d0cf3 BP |
1746 | if (!rule || !ofpacts_equal(rule->ofpacts, rule->ofpacts_len, |
1747 | ofpacts, ofpacts_len)) { | |
a9a2da38 | 1748 | struct ofputil_flow_mod fm; |
7ee20df1 BP |
1749 | |
1750 | memset(&fm, 0, sizeof fm); | |
81a76618 BP |
1751 | fm.match = *match; |
1752 | fm.priority = priority; | |
7ee20df1 | 1753 | fm.buffer_id = UINT32_MAX; |
f25d0cf3 BP |
1754 | fm.ofpacts = xmemdup(ofpacts, ofpacts_len); |
1755 | fm.ofpacts_len = ofpacts_len; | |
7ee20df1 | 1756 | add_flow(ofproto, NULL, &fm, NULL); |
f25d0cf3 | 1757 | free(fm.ofpacts); |
7ee20df1 | 1758 | } |
064af421 BP |
1759 | } |
1760 | ||
75a75043 | 1761 | /* Executes the flow modification specified in 'fm'. Returns 0 on success, an |
90bf1e07 BP |
1762 | * OFPERR_* OpenFlow error code on failure, or OFPROTO_POSTPONE if the |
1763 | * operation cannot be initiated now but may be retried later. | |
75a75043 BP |
1764 | * |
1765 | * This is a helper function for in-band control and fail-open. */ | |
1766 | int | |
e3b56933 | 1767 | ofproto_flow_mod(struct ofproto *ofproto, struct ofputil_flow_mod *fm) |
75a75043 BP |
1768 | { |
1769 | return handle_flow_mod__(ofproto, NULL, fm, NULL); | |
1770 | } | |
1771 | ||
6c1491fb BP |
1772 | /* Searches for a rule with matching criteria exactly equal to 'target' in |
1773 | * ofproto's table 0 and, if it finds one, deletes it. | |
1774 | * | |
1775 | * This is a helper function for in-band control and fail-open. */ | |
7ee20df1 | 1776 | bool |
81a76618 BP |
1777 | ofproto_delete_flow(struct ofproto *ofproto, |
1778 | const struct match *target, unsigned int priority) | |
064af421 | 1779 | { |
8037acb4 | 1780 | struct classifier *cls = &ofproto->tables[0].cls; |
064af421 BP |
1781 | struct rule *rule; |
1782 | ||
8037acb4 BP |
1783 | ovs_rwlock_rdlock(&cls->rwlock); |
1784 | rule = rule_from_cls_rule(classifier_find_match_exactly(cls, target, | |
1785 | priority)); | |
1786 | ovs_rwlock_unlock(&cls->rwlock); | |
7ee20df1 BP |
1787 | if (!rule) { |
1788 | /* No such rule -> success. */ | |
1789 | return true; | |
1790 | } else if (rule->pending) { | |
1791 | /* An operation on the rule is already pending -> failure. | |
1792 | * Caller must retry later if it's important. */ | |
1793 | return false; | |
1794 | } else { | |
1795 | /* Initiate deletion -> success. */ | |
8037acb4 BP |
1796 | ovs_rwlock_wrlock(&cls->rwlock); |
1797 | ofproto_delete_rule(ofproto, cls, rule); | |
1798 | ovs_rwlock_unlock(&cls->rwlock); | |
1799 | ||
7ee20df1 | 1800 | return true; |
bcf84111 | 1801 | } |
5ecc9d81 | 1802 | |
142e1f5c BP |
1803 | } |
1804 | ||
7ee20df1 BP |
1805 | /* Starts the process of deleting all of the flows from all of ofproto's flow |
1806 | * tables and then reintroducing the flows required by in-band control and | |
1807 | * fail-open. The process will complete in a later call to ofproto_run(). */ | |
142e1f5c BP |
1808 | void |
1809 | ofproto_flush_flows(struct ofproto *ofproto) | |
1810 | { | |
7ee20df1 BP |
1811 | COVERAGE_INC(ofproto_flush); |
1812 | ofproto->state = S_FLUSH; | |
064af421 BP |
1813 | } |
1814 | \f | |
1815 | static void | |
1816 | reinit_ports(struct ofproto *p) | |
1817 | { | |
abe529af | 1818 | struct ofproto_port_dump dump; |
b3c01ed3 | 1819 | struct sset devnames; |
064af421 | 1820 | struct ofport *ofport; |
abe529af | 1821 | struct ofproto_port ofproto_port; |
b3c01ed3 | 1822 | const char *devname; |
064af421 | 1823 | |
898bf89d JP |
1824 | COVERAGE_INC(ofproto_reinit_ports); |
1825 | ||
b3c01ed3 | 1826 | sset_init(&devnames); |
4e8e4213 | 1827 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { |
1264ec95 | 1828 | sset_add(&devnames, netdev_get_name(ofport->netdev)); |
064af421 | 1829 | } |
abe529af BP |
1830 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { |
1831 | sset_add(&devnames, ofproto_port.name); | |
064af421 | 1832 | } |
064af421 | 1833 | |
b3c01ed3 BP |
1834 | SSET_FOR_EACH (devname, &devnames) { |
1835 | update_port(p, devname); | |
064af421 | 1836 | } |
b3c01ed3 | 1837 | sset_destroy(&devnames); |
064af421 BP |
1838 | } |
1839 | ||
4e022ec0 | 1840 | static ofp_port_t |
e1b1d06a JP |
1841 | alloc_ofp_port(struct ofproto *ofproto, const char *netdev_name) |
1842 | { | |
4e022ec0 | 1843 | uint16_t port_idx; |
e1b1d06a | 1844 | |
4e022ec0 | 1845 | port_idx = simap_get(&ofproto->ofp_requests, netdev_name); |
430dbb14 | 1846 | port_idx = port_idx ? port_idx : UINT16_MAX; |
4e022ec0 | 1847 | |
430dbb14 | 1848 | if (port_idx >= ofproto->max_ports |
4e022ec0 | 1849 | || bitmap_is_set(ofproto->ofp_port_ids, port_idx)) { |
430dbb14 | 1850 | uint16_t end_port_no = ofproto->alloc_port_no; |
e1b1d06a | 1851 | |
e1b1d06a JP |
1852 | /* Search for a free OpenFlow port number. We try not to |
1853 | * immediately reuse them to prevent problems due to old | |
1854 | * flows. */ | |
6033d9d9 | 1855 | for (;;) { |
430dbb14 AW |
1856 | if (++ofproto->alloc_port_no >= ofproto->max_ports) { |
1857 | ofproto->alloc_port_no = 0; | |
6033d9d9 | 1858 | } |
430dbb14 AW |
1859 | if (!bitmap_is_set(ofproto->ofp_port_ids, |
1860 | ofproto->alloc_port_no)) { | |
1861 | port_idx = ofproto->alloc_port_no; | |
6033d9d9 | 1862 | break; |
e1b1d06a | 1863 | } |
430dbb14 | 1864 | if (ofproto->alloc_port_no == end_port_no) { |
6033d9d9 | 1865 | return OFPP_NONE; |
e1b1d06a JP |
1866 | } |
1867 | } | |
1868 | } | |
4e022ec0 AW |
1869 | bitmap_set1(ofproto->ofp_port_ids, port_idx); |
1870 | return u16_to_ofp(port_idx); | |
e1b1d06a JP |
1871 | } |
1872 | ||
1873 | static void | |
4e022ec0 | 1874 | dealloc_ofp_port(const struct ofproto *ofproto, ofp_port_t ofp_port) |
e1b1d06a | 1875 | { |
430dbb14 | 1876 | if (ofp_to_u16(ofp_port) < ofproto->max_ports) { |
4e022ec0 | 1877 | bitmap_set0(ofproto->ofp_port_ids, ofp_to_u16(ofp_port)); |
40fa9417 | 1878 | } |
e1b1d06a JP |
1879 | } |
1880 | ||
fbfa2911 BP |
1881 | /* Opens and returns a netdev for 'ofproto_port' in 'ofproto', or a null |
1882 | * pointer if the netdev cannot be opened. On success, also fills in | |
1883 | * 'opp'. */ | |
b33951b8 | 1884 | static struct netdev * |
e1b1d06a JP |
1885 | ofport_open(struct ofproto *ofproto, |
1886 | struct ofproto_port *ofproto_port, | |
9e1fd49b | 1887 | struct ofputil_phy_port *pp) |
064af421 BP |
1888 | { |
1889 | enum netdev_flags flags; | |
064af421 | 1890 | struct netdev *netdev; |
064af421 BP |
1891 | int error; |
1892 | ||
18812dff | 1893 | error = netdev_open(ofproto_port->name, ofproto_port->type, &netdev); |
064af421 | 1894 | if (error) { |
fbfa2911 | 1895 | VLOG_WARN_RL(&rl, "%s: ignoring port %s (%"PRIu16") because netdev %s " |
064af421 | 1896 | "cannot be opened (%s)", |
fbfa2911 | 1897 | ofproto->name, |
abe529af | 1898 | ofproto_port->name, ofproto_port->ofp_port, |
10a89ef0 | 1899 | ofproto_port->name, ovs_strerror(error)); |
064af421 BP |
1900 | return NULL; |
1901 | } | |
1902 | ||
e1b1d06a JP |
1903 | if (ofproto_port->ofp_port == OFPP_NONE) { |
1904 | if (!strcmp(ofproto->name, ofproto_port->name)) { | |
1905 | ofproto_port->ofp_port = OFPP_LOCAL; | |
1906 | } else { | |
1907 | ofproto_port->ofp_port = alloc_ofp_port(ofproto, | |
1908 | ofproto_port->name); | |
1909 | } | |
1910 | } | |
9e1fd49b BP |
1911 | pp->port_no = ofproto_port->ofp_port; |
1912 | netdev_get_etheraddr(netdev, pp->hw_addr); | |
1913 | ovs_strlcpy(pp->name, ofproto_port->name, sizeof pp->name); | |
064af421 | 1914 | netdev_get_flags(netdev, &flags); |
9e1fd49b BP |
1915 | pp->config = flags & NETDEV_UP ? 0 : OFPUTIL_PC_PORT_DOWN; |
1916 | pp->state = netdev_get_carrier(netdev) ? 0 : OFPUTIL_PS_LINK_DOWN; | |
1917 | netdev_get_features(netdev, &pp->curr, &pp->advertised, | |
1918 | &pp->supported, &pp->peer); | |
cd65125d BP |
1919 | pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000; |
1920 | pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000; | |
118c4676 | 1921 | |
b33951b8 | 1922 | return netdev; |
064af421 BP |
1923 | } |
1924 | ||
b33951b8 | 1925 | /* Returns true if most fields of 'a' and 'b' are equal. Differences in name, |
9e1fd49b | 1926 | * port number, and 'config' bits other than OFPUTIL_PS_LINK_DOWN are |
b33951b8 BP |
1927 | * disregarded. */ |
1928 | static bool | |
9e1fd49b BP |
1929 | ofport_equal(const struct ofputil_phy_port *a, |
1930 | const struct ofputil_phy_port *b) | |
064af421 | 1931 | { |
9e1fd49b | 1932 | return (eth_addr_equals(a->hw_addr, b->hw_addr) |
064af421 | 1933 | && a->state == b->state |
9e1fd49b | 1934 | && !((a->config ^ b->config) & OFPUTIL_PC_PORT_DOWN) |
064af421 BP |
1935 | && a->curr == b->curr |
1936 | && a->advertised == b->advertised | |
1937 | && a->supported == b->supported | |
9e1fd49b BP |
1938 | && a->peer == b->peer |
1939 | && a->curr_speed == b->curr_speed | |
1940 | && a->max_speed == b->max_speed); | |
064af421 BP |
1941 | } |
1942 | ||
b33951b8 BP |
1943 | /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'. |
1944 | * The caller must ensure that 'p' does not have a conflicting ofport (that is, | |
1945 | * one with the same name or port number). */ | |
064af421 | 1946 | static void |
b33951b8 | 1947 | ofport_install(struct ofproto *p, |
9e1fd49b | 1948 | struct netdev *netdev, const struct ofputil_phy_port *pp) |
064af421 | 1949 | { |
b33951b8 BP |
1950 | const char *netdev_name = netdev_get_name(netdev); |
1951 | struct ofport *ofport; | |
abe529af | 1952 | int error; |
72b06300 | 1953 | |
b33951b8 | 1954 | /* Create ofport. */ |
abe529af BP |
1955 | ofport = p->ofproto_class->port_alloc(); |
1956 | if (!ofport) { | |
1957 | error = ENOMEM; | |
1958 | goto error; | |
1959 | } | |
0f7d71a5 | 1960 | ofport->ofproto = p; |
b33951b8 | 1961 | ofport->netdev = netdev; |
031d8bff | 1962 | ofport->change_seq = netdev_change_seq(netdev); |
9e1fd49b BP |
1963 | ofport->pp = *pp; |
1964 | ofport->ofp_port = pp->port_no; | |
65e0be10 | 1965 | ofport->created = time_msec(); |
b33951b8 BP |
1966 | |
1967 | /* Add port to 'p'. */ | |
4e022ec0 | 1968 | hmap_insert(&p->ports, &ofport->hmap_node, |
f9c0c3ec | 1969 | hash_ofp_port(ofport->ofp_port)); |
72b06300 | 1970 | shash_add(&p->port_by_name, netdev_name, ofport); |
abe529af | 1971 | |
ada3428f | 1972 | update_mtu(p, ofport); |
9197df76 | 1973 | |
abe529af BP |
1974 | /* Let the ofproto_class initialize its private data. */ |
1975 | error = p->ofproto_class->port_construct(ofport); | |
1976 | if (error) { | |
1977 | goto error; | |
1978 | } | |
9e1fd49b | 1979 | connmgr_send_port_status(p->connmgr, pp, OFPPR_ADD); |
abe529af BP |
1980 | return; |
1981 | ||
1982 | error: | |
1983 | VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)", | |
10a89ef0 | 1984 | p->name, netdev_name, ovs_strerror(error)); |
abe529af BP |
1985 | if (ofport) { |
1986 | ofport_destroy__(ofport); | |
1987 | } else { | |
1988 | netdev_close(netdev); | |
72b06300 | 1989 | } |
064af421 BP |
1990 | } |
1991 | ||
b33951b8 | 1992 | /* Removes 'ofport' from 'p' and destroys it. */ |
064af421 | 1993 | static void |
0f7d71a5 | 1994 | ofport_remove(struct ofport *ofport) |
064af421 | 1995 | { |
9e1fd49b | 1996 | connmgr_send_port_status(ofport->ofproto->connmgr, &ofport->pp, |
fa066f01 | 1997 | OFPPR_DELETE); |
abe529af | 1998 | ofport_destroy(ofport); |
b33951b8 BP |
1999 | } |
2000 | ||
2001 | /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and | |
2002 | * destroys it. */ | |
2003 | static void | |
2004 | ofport_remove_with_name(struct ofproto *ofproto, const char *name) | |
2005 | { | |
2006 | struct ofport *port = shash_find_data(&ofproto->port_by_name, name); | |
2007 | if (port) { | |
0f7d71a5 | 2008 | ofport_remove(port); |
b33951b8 BP |
2009 | } |
2010 | } | |
2011 | ||
9e1fd49b | 2012 | /* Updates 'port' with new 'pp' description. |
b33951b8 BP |
2013 | * |
2014 | * Does not handle a name or port number change. The caller must implement | |
2015 | * such a change as a delete followed by an add. */ | |
2016 | static void | |
9e1fd49b | 2017 | ofport_modified(struct ofport *port, struct ofputil_phy_port *pp) |
b33951b8 | 2018 | { |
9e1fd49b BP |
2019 | memcpy(port->pp.hw_addr, pp->hw_addr, ETH_ADDR_LEN); |
2020 | port->pp.config = ((port->pp.config & ~OFPUTIL_PC_PORT_DOWN) | |
2021 | | (pp->config & OFPUTIL_PC_PORT_DOWN)); | |
2022 | port->pp.state = pp->state; | |
2023 | port->pp.curr = pp->curr; | |
2024 | port->pp.advertised = pp->advertised; | |
2025 | port->pp.supported = pp->supported; | |
2026 | port->pp.peer = pp->peer; | |
2027 | port->pp.curr_speed = pp->curr_speed; | |
2028 | port->pp.max_speed = pp->max_speed; | |
b33951b8 | 2029 | |
9e1fd49b | 2030 | connmgr_send_port_status(port->ofproto->connmgr, &port->pp, OFPPR_MODIFY); |
064af421 BP |
2031 | } |
2032 | ||
5a2dfd47 JP |
2033 | /* Update OpenFlow 'state' in 'port' and notify controller. */ |
2034 | void | |
9e1fd49b | 2035 | ofproto_port_set_state(struct ofport *port, enum ofputil_port_state state) |
5a2dfd47 | 2036 | { |
9e1fd49b BP |
2037 | if (port->pp.state != state) { |
2038 | port->pp.state = state; | |
2039 | connmgr_send_port_status(port->ofproto->connmgr, &port->pp, | |
5a2dfd47 JP |
2040 | OFPPR_MODIFY); |
2041 | } | |
2042 | } | |
2043 | ||
abe529af | 2044 | void |
4e022ec0 | 2045 | ofproto_port_unregister(struct ofproto *ofproto, ofp_port_t ofp_port) |
e7934396 | 2046 | { |
abe529af BP |
2047 | struct ofport *port = ofproto_get_port(ofproto, ofp_port); |
2048 | if (port) { | |
52a90c29 BP |
2049 | if (port->ofproto->ofproto_class->set_realdev) { |
2050 | port->ofproto->ofproto_class->set_realdev(port, 0, 0); | |
2051 | } | |
b308140a JP |
2052 | if (port->ofproto->ofproto_class->set_stp_port) { |
2053 | port->ofproto->ofproto_class->set_stp_port(port, NULL); | |
2054 | } | |
abe529af | 2055 | if (port->ofproto->ofproto_class->set_cfm) { |
a5610457 | 2056 | port->ofproto->ofproto_class->set_cfm(port, NULL); |
abe529af BP |
2057 | } |
2058 | if (port->ofproto->ofproto_class->bundle_remove) { | |
2059 | port->ofproto->ofproto_class->bundle_remove(port); | |
e7934396 BP |
2060 | } |
2061 | } | |
2062 | } | |
2063 | ||
2064 | static void | |
abe529af | 2065 | ofport_destroy__(struct ofport *port) |
e7934396 | 2066 | { |
abe529af BP |
2067 | struct ofproto *ofproto = port->ofproto; |
2068 | const char *name = netdev_get_name(port->netdev); | |
fa066f01 | 2069 | |
abe529af BP |
2070 | hmap_remove(&ofproto->ports, &port->hmap_node); |
2071 | shash_delete(&ofproto->port_by_name, | |
2072 | shash_find(&ofproto->port_by_name, name)); | |
fa066f01 | 2073 | |
abe529af BP |
2074 | netdev_close(port->netdev); |
2075 | ofproto->ofproto_class->port_dealloc(port); | |
e7934396 BP |
2076 | } |
2077 | ||
064af421 | 2078 | static void |
abe529af | 2079 | ofport_destroy(struct ofport *port) |
064af421 | 2080 | { |
fa066f01 | 2081 | if (port) { |
e1b1d06a | 2082 | dealloc_ofp_port(port->ofproto, port->ofp_port); |
abe529af BP |
2083 | port->ofproto->ofproto_class->port_destruct(port); |
2084 | ofport_destroy__(port); | |
2085 | } | |
064af421 BP |
2086 | } |
2087 | ||
abe529af | 2088 | struct ofport * |
4e022ec0 | 2089 | ofproto_get_port(const struct ofproto *ofproto, ofp_port_t ofp_port) |
ca0f572c BP |
2090 | { |
2091 | struct ofport *port; | |
2092 | ||
f9c0c3ec | 2093 | HMAP_FOR_EACH_IN_BUCKET (port, hmap_node, hash_ofp_port(ofp_port), |
4e022ec0 | 2094 | &ofproto->ports) { |
abe529af | 2095 | if (port->ofp_port == ofp_port) { |
ca0f572c BP |
2096 | return port; |
2097 | } | |
2098 | } | |
2099 | return NULL; | |
2100 | } | |
2101 | ||
6527c598 PS |
2102 | int |
2103 | ofproto_port_get_stats(const struct ofport *port, struct netdev_stats *stats) | |
2104 | { | |
2105 | struct ofproto *ofproto = port->ofproto; | |
2106 | int error; | |
2107 | ||
2108 | if (ofproto->ofproto_class->port_get_stats) { | |
2109 | error = ofproto->ofproto_class->port_get_stats(port, stats); | |
2110 | } else { | |
2111 | error = EOPNOTSUPP; | |
2112 | } | |
2113 | ||
2114 | return error; | |
2115 | } | |
2116 | ||
064af421 | 2117 | static void |
b33951b8 | 2118 | update_port(struct ofproto *ofproto, const char *name) |
064af421 | 2119 | { |
abe529af | 2120 | struct ofproto_port ofproto_port; |
9e1fd49b | 2121 | struct ofputil_phy_port pp; |
b33951b8 BP |
2122 | struct netdev *netdev; |
2123 | struct ofport *port; | |
064af421 BP |
2124 | |
2125 | COVERAGE_INC(ofproto_update_port); | |
c874dc6d | 2126 | |
b33951b8 | 2127 | /* Fetch 'name''s location and properties from the datapath. */ |
abe529af | 2128 | netdev = (!ofproto_port_query_by_name(ofproto, name, &ofproto_port) |
fbfa2911 | 2129 | ? ofport_open(ofproto, &ofproto_port, &pp) |
b33951b8 | 2130 | : NULL); |
4e022ec0 | 2131 | |
b33951b8 | 2132 | if (netdev) { |
abe529af | 2133 | port = ofproto_get_port(ofproto, ofproto_port.ofp_port); |
b33951b8 | 2134 | if (port && !strcmp(netdev_get_name(port->netdev), name)) { |
e65942a0 BP |
2135 | struct netdev *old_netdev = port->netdev; |
2136 | ||
b33951b8 | 2137 | /* 'name' hasn't changed location. Any properties changed? */ |
9e1fd49b BP |
2138 | if (!ofport_equal(&port->pp, &pp)) { |
2139 | ofport_modified(port, &pp); | |
abe529af BP |
2140 | } |
2141 | ||
ada3428f | 2142 | update_mtu(ofproto, port); |
9197df76 | 2143 | |
e65942a0 BP |
2144 | /* Install the newly opened netdev in case it has changed. |
2145 | * Don't close the old netdev yet in case port_modified has to | |
2146 | * remove a retained reference to it.*/ | |
abe529af | 2147 | port->netdev = netdev; |
031d8bff | 2148 | port->change_seq = netdev_change_seq(netdev); |
abe529af BP |
2149 | |
2150 | if (port->ofproto->ofproto_class->port_modified) { | |
2151 | port->ofproto->ofproto_class->port_modified(port); | |
b33951b8 | 2152 | } |
e65942a0 BP |
2153 | |
2154 | netdev_close(old_netdev); | |
b33951b8 BP |
2155 | } else { |
2156 | /* If 'port' is nonnull then its name differs from 'name' and thus | |
2157 | * we should delete it. If we think there's a port named 'name' | |
2158 | * then its port number must be wrong now so delete it too. */ | |
2159 | if (port) { | |
0f7d71a5 | 2160 | ofport_remove(port); |
b33951b8 BP |
2161 | } |
2162 | ofport_remove_with_name(ofproto, name); | |
9e1fd49b | 2163 | ofport_install(ofproto, netdev, &pp); |
c874dc6d | 2164 | } |
b33951b8 BP |
2165 | } else { |
2166 | /* Any port named 'name' is gone now. */ | |
2167 | ofport_remove_with_name(ofproto, name); | |
c874dc6d | 2168 | } |
abe529af | 2169 | ofproto_port_destroy(&ofproto_port); |
064af421 BP |
2170 | } |
2171 | ||
2172 | static int | |
2173 | init_ports(struct ofproto *p) | |
2174 | { | |
abe529af BP |
2175 | struct ofproto_port_dump dump; |
2176 | struct ofproto_port ofproto_port; | |
e1b1d06a | 2177 | struct shash_node *node, *next; |
abe529af BP |
2178 | |
2179 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { | |
e1b1d06a JP |
2180 | const char *name = ofproto_port.name; |
2181 | ||
2182 | if (shash_find(&p->port_by_name, name)) { | |
fbfa2911 | 2183 | VLOG_WARN_RL(&rl, "%s: ignoring duplicate device %s in datapath", |
e1b1d06a | 2184 | p->name, name); |
abe529af | 2185 | } else { |
9e1fd49b | 2186 | struct ofputil_phy_port pp; |
b33951b8 BP |
2187 | struct netdev *netdev; |
2188 | ||
e1b1d06a JP |
2189 | /* Check if an OpenFlow port number had been requested. */ |
2190 | node = shash_find(&init_ofp_ports, name); | |
2191 | if (node) { | |
2192 | const struct iface_hint *iface_hint = node->data; | |
4e022ec0 AW |
2193 | simap_put(&p->ofp_requests, name, |
2194 | ofp_to_u16(iface_hint->ofp_port)); | |
e1b1d06a JP |
2195 | } |
2196 | ||
fbfa2911 | 2197 | netdev = ofport_open(p, &ofproto_port, &pp); |
b33951b8 | 2198 | if (netdev) { |
9e1fd49b | 2199 | ofport_install(p, netdev, &pp); |
430dbb14 | 2200 | if (ofp_to_u16(ofproto_port.ofp_port) < p->max_ports) { |
7c35397c | 2201 | p->alloc_port_no = MAX(p->alloc_port_no, |
430dbb14 | 2202 | ofp_to_u16(ofproto_port.ofp_port)); |
7c35397c | 2203 | } |
064af421 BP |
2204 | } |
2205 | } | |
2206 | } | |
b0ec0f27 | 2207 | |
e1b1d06a | 2208 | SHASH_FOR_EACH_SAFE(node, next, &init_ofp_ports) { |
4f9e08a5 | 2209 | struct iface_hint *iface_hint = node->data; |
e1b1d06a JP |
2210 | |
2211 | if (!strcmp(iface_hint->br_name, p->name)) { | |
2212 | free(iface_hint->br_name); | |
2213 | free(iface_hint->br_type); | |
4f9e08a5 | 2214 | free(iface_hint); |
e1b1d06a JP |
2215 | shash_delete(&init_ofp_ports, node); |
2216 | } | |
2217 | } | |
2218 | ||
064af421 BP |
2219 | return 0; |
2220 | } | |
9197df76 JP |
2221 | |
2222 | /* Find the minimum MTU of all non-datapath devices attached to 'p'. | |
2223 | * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */ | |
2224 | static int | |
2225 | find_min_mtu(struct ofproto *p) | |
2226 | { | |
2227 | struct ofport *ofport; | |
2228 | int mtu = 0; | |
2229 | ||
2230 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2231 | struct netdev *netdev = ofport->netdev; | |
2232 | int dev_mtu; | |
2233 | ||
2234 | /* Skip any internal ports, since that's what we're trying to | |
2235 | * set. */ | |
2236 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
2237 | continue; | |
2238 | } | |
2239 | ||
2240 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2241 | continue; | |
2242 | } | |
2243 | if (!mtu || dev_mtu < mtu) { | |
2244 | mtu = dev_mtu; | |
2245 | } | |
2246 | } | |
2247 | ||
2248 | return mtu ? mtu: ETH_PAYLOAD_MAX; | |
2249 | } | |
2250 | ||
ada3428f PS |
2251 | /* Update MTU of all datapath devices on 'p' to the minimum of the |
2252 | * non-datapath ports in event of 'port' added or changed. */ | |
9197df76 | 2253 | static void |
ada3428f | 2254 | update_mtu(struct ofproto *p, struct ofport *port) |
9197df76 JP |
2255 | { |
2256 | struct ofport *ofport; | |
ada3428f PS |
2257 | struct netdev *netdev = port->netdev; |
2258 | int dev_mtu, old_min; | |
2259 | ||
2260 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2261 | port->mtu = 0; | |
2262 | return; | |
2263 | } | |
2264 | if (!strcmp(netdev_get_type(port->netdev), "internal")) { | |
2265 | if (dev_mtu > p->min_mtu) { | |
2266 | if (!netdev_set_mtu(port->netdev, p->min_mtu)) { | |
2267 | dev_mtu = p->min_mtu; | |
2268 | } | |
2269 | } | |
2270 | port->mtu = dev_mtu; | |
2271 | return; | |
2272 | } | |
2273 | ||
2274 | /* For non-internal port find new min mtu. */ | |
2275 | old_min = p->min_mtu; | |
2276 | port->mtu = dev_mtu; | |
2277 | p->min_mtu = find_min_mtu(p); | |
2278 | if (p->min_mtu == old_min) { | |
2279 | return; | |
2280 | } | |
9197df76 JP |
2281 | |
2282 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2283 | struct netdev *netdev = ofport->netdev; | |
2284 | ||
2285 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
ada3428f PS |
2286 | if (!netdev_set_mtu(netdev, p->min_mtu)) { |
2287 | ofport->mtu = p->min_mtu; | |
2288 | } | |
9197df76 JP |
2289 | } |
2290 | } | |
2291 | } | |
064af421 | 2292 | \f |
064af421 | 2293 | static void |
392caac0 | 2294 | ofproto_rule_destroy(struct rule *rule) |
064af421 | 2295 | { |
1eae3d33 | 2296 | if (rule) { |
8037acb4 | 2297 | rule->ofproto->ofproto_class->rule_destruct(rule); |
392caac0 | 2298 | ofproto_rule_destroy__(rule); |
1eae3d33 | 2299 | } |
064af421 BP |
2300 | } |
2301 | ||
392caac0 BP |
2302 | static void |
2303 | ofproto_rule_destroy__(struct rule *rule) | |
2304 | { | |
2305 | cls_rule_destroy(&rule->cr); | |
2306 | free(rule->ofpacts); | |
2307 | ovs_mutex_destroy(&rule->timeout_mutex); | |
2308 | ovs_rwlock_destroy(&rule->rwlock); | |
2309 | rule->ofproto->ofproto_class->rule_dealloc(rule); | |
2310 | } | |
2311 | ||
7ee20df1 | 2312 | /* This function allows an ofproto implementation to destroy any rules that |
8037acb4 BP |
2313 | * remain when its ->destruct() function is called.. This function implements |
2314 | * steps 4.4 and 4.5 in the section titled "Rule Life Cycle" in | |
2315 | * ofproto-provider.h. | |
7ee20df1 BP |
2316 | * |
2317 | * This function should only be called from an ofproto implementation's | |
2318 | * ->destruct() function. It is not suitable elsewhere. */ | |
abe529af | 2319 | void |
8037acb4 BP |
2320 | ofproto_rule_delete(struct ofproto *ofproto, struct classifier *cls, |
2321 | struct rule *rule) | |
2322 | OVS_REQ_WRLOCK(cls->rwlock) | |
064af421 | 2323 | { |
8037acb4 | 2324 | ofproto_delete_rule(ofproto, cls, rule); |
064af421 BP |
2325 | } |
2326 | ||
bcf84111 | 2327 | /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action |
f25d0cf3 | 2328 | * that outputs to 'port' (output to OFPP_FLOOD and OFPP_ALL doesn't count). */ |
2b07c8b1 | 2329 | bool |
4e022ec0 | 2330 | ofproto_rule_has_out_port(const struct rule *rule, ofp_port_t port) |
064af421 | 2331 | { |
7f05e7ab | 2332 | return (port == OFPP_ANY |
f25d0cf3 | 2333 | || ofpacts_output_to_port(rule->ofpacts, rule->ofpacts_len, port)); |
064af421 BP |
2334 | } |
2335 | ||
7395c052 NZ |
2336 | /* Returns true if 'rule' has group and equals group_id. */ |
2337 | bool | |
2338 | ofproto_rule_has_out_group(const struct rule *rule, uint32_t group_id) | |
2339 | { | |
2340 | return (group_id == OFPG11_ANY | |
2341 | || ofpacts_output_to_group(rule->ofpacts, rule->ofpacts_len, group_id)); | |
2342 | } | |
2343 | ||
2b07c8b1 BP |
2344 | /* Returns true if a rule related to 'op' has an OpenFlow OFPAT_OUTPUT or |
2345 | * OFPAT_ENQUEUE action that outputs to 'out_port'. */ | |
2346 | bool | |
4e022ec0 | 2347 | ofoperation_has_out_port(const struct ofoperation *op, ofp_port_t out_port) |
2b07c8b1 BP |
2348 | { |
2349 | if (ofproto_rule_has_out_port(op->rule, out_port)) { | |
2350 | return true; | |
2351 | } | |
2352 | ||
2353 | switch (op->type) { | |
2354 | case OFOPERATION_ADD: | |
2b07c8b1 BP |
2355 | case OFOPERATION_DELETE: |
2356 | return false; | |
2357 | ||
2358 | case OFOPERATION_MODIFY: | |
b277c7cc | 2359 | case OFOPERATION_REPLACE: |
2b07c8b1 BP |
2360 | return ofpacts_output_to_port(op->ofpacts, op->ofpacts_len, out_port); |
2361 | } | |
2362 | ||
2363 | NOT_REACHED(); | |
2364 | } | |
2365 | ||
bcf84111 | 2366 | /* Executes the actions indicated by 'rule' on 'packet' and credits 'rule''s |
a69553be | 2367 | * statistics appropriately. |
064af421 | 2368 | * |
bcf84111 BP |
2369 | * 'packet' doesn't necessarily have to match 'rule'. 'rule' will be credited |
2370 | * with statistics for 'packet' either way. | |
2371 | * | |
2372 | * Takes ownership of 'packet'. */ | |
5bf0e941 | 2373 | static int |
4e022ec0 | 2374 | rule_execute(struct rule *rule, ofp_port_t in_port, struct ofpbuf *packet) |
eedc0097 | 2375 | { |
bcf84111 | 2376 | struct flow flow; |
4e022ec0 | 2377 | union flow_in_port in_port_; |
eedc0097 | 2378 | |
4e022ec0 AW |
2379 | in_port_.ofp_port = in_port; |
2380 | flow_extract(packet, 0, 0, NULL, &in_port_, &flow); | |
5bf0e941 | 2381 | return rule->ofproto->ofproto_class->rule_execute(rule, &flow, packet); |
350a665f BP |
2382 | } |
2383 | ||
abe529af BP |
2384 | /* Returns true if 'rule' should be hidden from the controller. |
2385 | * | |
2386 | * Rules with priority higher than UINT16_MAX are set up by ofproto itself | |
2387 | * (e.g. by in-band control) and are intentionally hidden from the | |
2388 | * controller. */ | |
2b07c8b1 BP |
2389 | bool |
2390 | ofproto_rule_is_hidden(const struct rule *rule) | |
b6c9e612 | 2391 | { |
abe529af | 2392 | return rule->cr.priority > UINT16_MAX; |
7b064a79 | 2393 | } |
5c67e4af BP |
2394 | |
2395 | static enum oftable_flags | |
2396 | rule_get_flags(const struct rule *rule) | |
2397 | { | |
2398 | return rule->ofproto->tables[rule->table_id].flags; | |
2399 | } | |
2400 | ||
2401 | static bool | |
2402 | rule_is_modifiable(const struct rule *rule) | |
2403 | { | |
2404 | return !(rule_get_flags(rule) & OFTABLE_READONLY); | |
2405 | } | |
fa066f01 | 2406 | \f |
90bf1e07 | 2407 | static enum ofperr |
d1e2cf21 | 2408 | handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2409 | { |
b0421aa2 | 2410 | ofconn_send_reply(ofconn, make_echo_reply(oh)); |
064af421 | 2411 | return 0; |
064af421 BP |
2412 | } |
2413 | ||
90bf1e07 | 2414 | static enum ofperr |
d1e2cf21 | 2415 | handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2416 | { |
64ff1d96 | 2417 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
9e1fd49b | 2418 | struct ofputil_switch_features features; |
064af421 | 2419 | struct ofport *port; |
6c1491fb | 2420 | bool arp_match_ip; |
9e1fd49b | 2421 | struct ofpbuf *b; |
c2f0373a BP |
2422 | int n_tables; |
2423 | int i; | |
064af421 | 2424 | |
9e1fd49b BP |
2425 | ofproto->ofproto_class->get_features(ofproto, &arp_match_ip, |
2426 | &features.actions); | |
cb22974d | 2427 | ovs_assert(features.actions & OFPUTIL_A_OUTPUT); /* sanity check */ |
064af421 | 2428 | |
c2f0373a BP |
2429 | /* Count only non-hidden tables in the number of tables. (Hidden tables, |
2430 | * if present, are always at the end.) */ | |
2431 | n_tables = ofproto->n_tables; | |
2432 | for (i = 0; i < ofproto->n_tables; i++) { | |
2433 | if (ofproto->tables[i].flags & OFTABLE_HIDDEN) { | |
2434 | n_tables = i; | |
2435 | break; | |
2436 | } | |
2437 | } | |
2438 | ||
9e1fd49b BP |
2439 | features.datapath_id = ofproto->datapath_id; |
2440 | features.n_buffers = pktbuf_capacity(); | |
c2f0373a | 2441 | features.n_tables = n_tables; |
9e1fd49b BP |
2442 | features.capabilities = (OFPUTIL_C_FLOW_STATS | OFPUTIL_C_TABLE_STATS | |
2443 | OFPUTIL_C_PORT_STATS | OFPUTIL_C_QUEUE_STATS); | |
6c1491fb | 2444 | if (arp_match_ip) { |
9e1fd49b | 2445 | features.capabilities |= OFPUTIL_C_ARP_MATCH_IP; |
6c1491fb | 2446 | } |
2e1ae200 JR |
2447 | /* FIXME: Fill in proper features.auxiliary_id for auxiliary connections */ |
2448 | features.auxiliary_id = 0; | |
9e1fd49b BP |
2449 | b = ofputil_encode_switch_features(&features, ofconn_get_protocol(ofconn), |
2450 | oh->xid); | |
64ff1d96 | 2451 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
9e1fd49b | 2452 | ofputil_put_switch_features_port(&port->pp, b); |
064af421 | 2453 | } |
064af421 | 2454 | |
9e1fd49b | 2455 | ofconn_send_reply(ofconn, b); |
064af421 BP |
2456 | return 0; |
2457 | } | |
064af421 | 2458 | |
90bf1e07 | 2459 | static enum ofperr |
d1e2cf21 | 2460 | handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2461 | { |
64ff1d96 | 2462 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 | 2463 | struct ofp_switch_config *osc; |
f0fd1a17 | 2464 | enum ofp_config_flags flags; |
7257b535 | 2465 | struct ofpbuf *buf; |
959a2ecd | 2466 | |
064af421 | 2467 | /* Send reply. */ |
982697a4 BP |
2468 | buf = ofpraw_alloc_reply(OFPRAW_OFPT_GET_CONFIG_REPLY, oh, 0); |
2469 | osc = ofpbuf_put_uninit(buf, sizeof *osc); | |
f0fd1a17 | 2470 | flags = ofproto->frag_handling; |
2e1ae200 JR |
2471 | /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */ |
2472 | if (oh->version < OFP13_VERSION | |
2473 | && ofconn_get_invalid_ttl_to_controller(ofconn)) { | |
f0fd1a17 PS |
2474 | flags |= OFPC_INVALID_TTL_TO_CONTROLLER; |
2475 | } | |
2476 | osc->flags = htons(flags); | |
810605a2 | 2477 | osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn)); |
b0421aa2 | 2478 | ofconn_send_reply(ofconn, buf); |
2d70a31a | 2479 | |
064af421 BP |
2480 | return 0; |
2481 | } | |
064af421 | 2482 | |
90bf1e07 | 2483 | static enum ofperr |
982697a4 | 2484 | handle_set_config(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2485 | { |
982697a4 | 2486 | const struct ofp_switch_config *osc = ofpmsg_body(oh); |
64ff1d96 | 2487 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
d1e2cf21 | 2488 | uint16_t flags = ntohs(osc->flags); |
2d70a31a | 2489 | |
7257b535 | 2490 | if (ofconn_get_type(ofconn) != OFCONN_PRIMARY |
f4f1ea7e | 2491 | || ofconn_get_role(ofconn) != OFPCR12_ROLE_SLAVE) { |
7257b535 BP |
2492 | enum ofp_config_flags cur = ofproto->frag_handling; |
2493 | enum ofp_config_flags next = flags & OFPC_FRAG_MASK; | |
2494 | ||
cb22974d | 2495 | ovs_assert((cur & OFPC_FRAG_MASK) == cur); |
7257b535 BP |
2496 | if (cur != next) { |
2497 | if (ofproto->ofproto_class->set_frag_handling(ofproto, next)) { | |
2498 | ofproto->frag_handling = next; | |
2499 | } else { | |
2500 | VLOG_WARN_RL(&rl, "%s: unsupported fragment handling mode %s", | |
2501 | ofproto->name, | |
2502 | ofputil_frag_handling_to_string(next)); | |
2503 | } | |
064af421 BP |
2504 | } |
2505 | } | |
2e1ae200 | 2506 | /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */ |
f0fd1a17 | 2507 | ofconn_set_invalid_ttl_to_controller(ofconn, |
2e1ae200 JR |
2508 | (oh->version < OFP13_VERSION |
2509 | && flags & OFPC_INVALID_TTL_TO_CONTROLLER)); | |
ebe482fd | 2510 | |
810605a2 | 2511 | ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len)); |
0ad9b732 | 2512 | |
064af421 | 2513 | return 0; |
064af421 BP |
2514 | } |
2515 | ||
9deba63b | 2516 | /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow |
90bf1e07 BP |
2517 | * error message code for the caller to propagate upward. Otherwise, returns |
2518 | * 0. | |
2519 | * | |
2520 | * The log message mentions 'msg_type'. */ | |
2521 | static enum ofperr | |
2522 | reject_slave_controller(struct ofconn *ofconn) | |
9deba63b | 2523 | { |
1ce0a5fa | 2524 | if (ofconn_get_type(ofconn) == OFCONN_PRIMARY |
f4f1ea7e | 2525 | && ofconn_get_role(ofconn) == OFPCR12_ROLE_SLAVE) { |
90bf1e07 | 2526 | return OFPERR_OFPBRC_EPERM; |
9deba63b BP |
2527 | } else { |
2528 | return 0; | |
2529 | } | |
2530 | } | |
2531 | ||
9cae45dc JR |
2532 | /* Finds the OFPACT_METER action, if any, in the 'ofpacts_len' bytes of |
2533 | * 'ofpacts'. If found, returns its meter ID; if not, returns 0. | |
2534 | * | |
2535 | * This function relies on the order of 'ofpacts' being correct (as checked by | |
2536 | * ofpacts_verify()). */ | |
2537 | static uint32_t | |
2538 | find_meter(const struct ofpact ofpacts[], size_t ofpacts_len) | |
2539 | { | |
2540 | const struct ofpact *a; | |
2541 | ||
2542 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
2543 | enum ovs_instruction_type inst; | |
2544 | ||
2545 | inst = ovs_instruction_type_from_ofpact_type(a->type); | |
2546 | if (a->type == OFPACT_METER) { | |
2547 | return ofpact_get_METER(a)->meter_id; | |
2548 | } else if (inst > OVSINST_OFPIT13_METER) { | |
2549 | break; | |
2550 | } | |
2551 | } | |
2552 | ||
2553 | return 0; | |
2554 | } | |
2555 | ||
e3b56933 JR |
2556 | /* Checks that the 'ofpacts_len' bytes of actions in 'ofpacts' are appropriate |
2557 | * for a packet with the prerequisites satisfied by 'flow' in table 'table_id'. | |
9cae45dc JR |
2558 | * 'flow' may be temporarily modified, but is restored at return. |
2559 | */ | |
2560 | static enum ofperr | |
2561 | ofproto_check_ofpacts(struct ofproto *ofproto, | |
2562 | const struct ofpact ofpacts[], size_t ofpacts_len, | |
e3b56933 | 2563 | struct flow *flow, uint8_t table_id) |
9cae45dc JR |
2564 | { |
2565 | enum ofperr error; | |
2566 | uint32_t mid; | |
2567 | ||
430dbb14 AW |
2568 | error = ofpacts_check(ofpacts, ofpacts_len, flow, |
2569 | u16_to_ofp(ofproto->max_ports), table_id); | |
9cae45dc JR |
2570 | if (error) { |
2571 | return error; | |
2572 | } | |
2573 | ||
2574 | mid = find_meter(ofpacts, ofpacts_len); | |
2575 | if (mid && ofproto_get_provider_meter_id(ofproto, mid) == UINT32_MAX) { | |
2576 | return OFPERR_OFPMMFC_INVALID_METER; | |
2577 | } | |
2578 | return 0; | |
2579 | } | |
2580 | ||
90bf1e07 | 2581 | static enum ofperr |
982697a4 | 2582 | handle_packet_out(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2583 | { |
64ff1d96 | 2584 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
c6a93eb7 BP |
2585 | struct ofputil_packet_out po; |
2586 | struct ofpbuf *payload; | |
f25d0cf3 BP |
2587 | uint64_t ofpacts_stub[1024 / 8]; |
2588 | struct ofpbuf ofpacts; | |
ae412e7d | 2589 | struct flow flow; |
4e022ec0 | 2590 | union flow_in_port in_port_; |
90bf1e07 | 2591 | enum ofperr error; |
064af421 | 2592 | |
ac51afaf BP |
2593 | COVERAGE_INC(ofproto_packet_out); |
2594 | ||
76589937 | 2595 | error = reject_slave_controller(ofconn); |
9deba63b | 2596 | if (error) { |
f25d0cf3 | 2597 | goto exit; |
9deba63b BP |
2598 | } |
2599 | ||
c6a93eb7 | 2600 | /* Decode message. */ |
f25d0cf3 | 2601 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
982697a4 | 2602 | error = ofputil_decode_packet_out(&po, oh, &ofpacts); |
064af421 | 2603 | if (error) { |
f25d0cf3 | 2604 | goto exit_free_ofpacts; |
064af421 | 2605 | } |
430dbb14 | 2606 | if (ofp_to_u16(po.in_port) >= p->max_ports |
4e022ec0 | 2607 | && ofp_to_u16(po.in_port) < ofp_to_u16(OFPP_MAX)) { |
2e1bfcb6 | 2608 | error = OFPERR_OFPBRC_BAD_PORT; |
91858960 BP |
2609 | goto exit_free_ofpacts; |
2610 | } | |
064af421 | 2611 | |
5cb7a798 | 2612 | |
ac51afaf | 2613 | /* Get payload. */ |
c6a93eb7 BP |
2614 | if (po.buffer_id != UINT32_MAX) { |
2615 | error = ofconn_pktbuf_retrieve(ofconn, po.buffer_id, &payload, NULL); | |
2616 | if (error || !payload) { | |
f25d0cf3 | 2617 | goto exit_free_ofpacts; |
064af421 | 2618 | } |
064af421 | 2619 | } else { |
bb622f82 BP |
2620 | /* Ensure that the L3 header is 32-bit aligned. */ |
2621 | payload = ofpbuf_clone_data_with_headroom(po.packet, po.packet_len, 2); | |
e1154f71 BP |
2622 | } |
2623 | ||
548de4dd | 2624 | /* Verify actions against packet, then send packet if successful. */ |
4e022ec0 AW |
2625 | in_port_.ofp_port = po.in_port; |
2626 | flow_extract(payload, 0, 0, NULL, &in_port_, &flow); | |
e3b56933 | 2627 | error = ofproto_check_ofpacts(p, po.ofpacts, po.ofpacts_len, &flow, 0); |
548de4dd BP |
2628 | if (!error) { |
2629 | error = p->ofproto_class->packet_out(p, payload, &flow, | |
2630 | po.ofpacts, po.ofpacts_len); | |
2631 | } | |
c6a93eb7 | 2632 | ofpbuf_delete(payload); |
abe529af | 2633 | |
f25d0cf3 BP |
2634 | exit_free_ofpacts: |
2635 | ofpbuf_uninit(&ofpacts); | |
2636 | exit: | |
abe529af | 2637 | return error; |
064af421 BP |
2638 | } |
2639 | ||
2640 | static void | |
9e1fd49b BP |
2641 | update_port_config(struct ofport *port, |
2642 | enum ofputil_port_config config, | |
2643 | enum ofputil_port_config mask) | |
064af421 | 2644 | { |
9e1fd49b BP |
2645 | enum ofputil_port_config old_config = port->pp.config; |
2646 | enum ofputil_port_config toggle; | |
abe529af | 2647 | |
9e1fd49b BP |
2648 | toggle = (config ^ port->pp.config) & mask; |
2649 | if (toggle & OFPUTIL_PC_PORT_DOWN) { | |
2650 | if (config & OFPUTIL_PC_PORT_DOWN) { | |
4b609110 | 2651 | netdev_turn_flags_off(port->netdev, NETDEV_UP, NULL); |
064af421 | 2652 | } else { |
4b609110 | 2653 | netdev_turn_flags_on(port->netdev, NETDEV_UP, NULL); |
064af421 | 2654 | } |
9e1fd49b | 2655 | toggle &= ~OFPUTIL_PC_PORT_DOWN; |
064af421 | 2656 | } |
abe529af | 2657 | |
9e1fd49b BP |
2658 | port->pp.config ^= toggle; |
2659 | if (port->pp.config != old_config) { | |
abe529af | 2660 | port->ofproto->ofproto_class->port_reconfigured(port, old_config); |
064af421 BP |
2661 | } |
2662 | } | |
2663 | ||
90bf1e07 | 2664 | static enum ofperr |
d1e2cf21 | 2665 | handle_port_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2666 | { |
64ff1d96 | 2667 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
9e1fd49b | 2668 | struct ofputil_port_mod pm; |
064af421 | 2669 | struct ofport *port; |
9e1fd49b | 2670 | enum ofperr error; |
064af421 | 2671 | |
76589937 | 2672 | error = reject_slave_controller(ofconn); |
9deba63b BP |
2673 | if (error) { |
2674 | return error; | |
2675 | } | |
064af421 | 2676 | |
9e1fd49b BP |
2677 | error = ofputil_decode_port_mod(oh, &pm); |
2678 | if (error) { | |
2679 | return error; | |
2680 | } | |
2681 | ||
2682 | port = ofproto_get_port(p, pm.port_no); | |
064af421 | 2683 | if (!port) { |
90bf1e07 | 2684 | return OFPERR_OFPPMFC_BAD_PORT; |
9e1fd49b | 2685 | } else if (!eth_addr_equals(port->pp.hw_addr, pm.hw_addr)) { |
90bf1e07 | 2686 | return OFPERR_OFPPMFC_BAD_HW_ADDR; |
064af421 | 2687 | } else { |
9e1fd49b BP |
2688 | update_port_config(port, pm.config, pm.mask); |
2689 | if (pm.advertise) { | |
2690 | netdev_set_advertisements(port->netdev, pm.advertise); | |
064af421 BP |
2691 | } |
2692 | } | |
2693 | return 0; | |
2694 | } | |
2695 | ||
90bf1e07 | 2696 | static enum ofperr |
3269c562 | 2697 | handle_desc_stats_request(struct ofconn *ofconn, |
982697a4 | 2698 | const struct ofp_header *request) |
064af421 | 2699 | { |
061bfea4 BP |
2700 | static const char *default_mfr_desc = "Nicira, Inc."; |
2701 | static const char *default_hw_desc = "Open vSwitch"; | |
2702 | static const char *default_sw_desc = VERSION; | |
2703 | static const char *default_serial_desc = "None"; | |
2704 | static const char *default_dp_desc = "None"; | |
2705 | ||
64ff1d96 | 2706 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 BP |
2707 | struct ofp_desc_stats *ods; |
2708 | struct ofpbuf *msg; | |
2709 | ||
982697a4 BP |
2710 | msg = ofpraw_alloc_stats_reply(request, 0); |
2711 | ods = ofpbuf_put_zeros(msg, sizeof *ods); | |
061bfea4 BP |
2712 | ovs_strlcpy(ods->mfr_desc, p->mfr_desc ? p->mfr_desc : default_mfr_desc, |
2713 | sizeof ods->mfr_desc); | |
2714 | ovs_strlcpy(ods->hw_desc, p->hw_desc ? p->hw_desc : default_hw_desc, | |
2715 | sizeof ods->hw_desc); | |
2716 | ovs_strlcpy(ods->sw_desc, p->sw_desc ? p->sw_desc : default_sw_desc, | |
2717 | sizeof ods->sw_desc); | |
2718 | ovs_strlcpy(ods->serial_num, | |
2719 | p->serial_desc ? p->serial_desc : default_serial_desc, | |
2720 | sizeof ods->serial_num); | |
2721 | ovs_strlcpy(ods->dp_desc, p->dp_desc ? p->dp_desc : default_dp_desc, | |
2722 | sizeof ods->dp_desc); | |
b0421aa2 | 2723 | ofconn_send_reply(ofconn, msg); |
064af421 BP |
2724 | |
2725 | return 0; | |
2726 | } | |
2727 | ||
90bf1e07 | 2728 | static enum ofperr |
3269c562 | 2729 | handle_table_stats_request(struct ofconn *ofconn, |
982697a4 | 2730 | const struct ofp_header *request) |
064af421 | 2731 | { |
64ff1d96 | 2732 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
307975da | 2733 | struct ofp12_table_stats *ots; |
064af421 | 2734 | struct ofpbuf *msg; |
c2f0373a | 2735 | int n_tables; |
6c1491fb | 2736 | size_t i; |
064af421 | 2737 | |
307975da SH |
2738 | /* Set up default values. |
2739 | * | |
2740 | * ofp12_table_stats is used as a generic structure as | |
2741 | * it is able to hold all the fields for ofp10_table_stats | |
2742 | * and ofp11_table_stats (and of course itself). | |
2743 | */ | |
2744 | ots = xcalloc(p->n_tables, sizeof *ots); | |
6c1491fb BP |
2745 | for (i = 0; i < p->n_tables; i++) { |
2746 | ots[i].table_id = i; | |
35aa7a21 | 2747 | sprintf(ots[i].name, "table%zu", i); |
307975da SH |
2748 | ots[i].match = htonll(OFPXMT12_MASK); |
2749 | ots[i].wildcards = htonll(OFPXMT12_MASK); | |
e78b61f6 BP |
2750 | ots[i].write_actions = htonl(OFPAT11_OUTPUT); |
2751 | ots[i].apply_actions = htonl(OFPAT11_OUTPUT); | |
307975da SH |
2752 | ots[i].write_setfields = htonll(OFPXMT12_MASK); |
2753 | ots[i].apply_setfields = htonll(OFPXMT12_MASK); | |
2754 | ots[i].metadata_match = htonll(UINT64_MAX); | |
2755 | ots[i].metadata_write = htonll(UINT64_MAX); | |
2756 | ots[i].instructions = htonl(OFPIT11_ALL); | |
2757 | ots[i].config = htonl(OFPTC11_TABLE_MISS_MASK); | |
6c1491fb | 2758 | ots[i].max_entries = htonl(1000000); /* An arbitrary big number. */ |
0b4f2078 | 2759 | ovs_rwlock_rdlock(&p->tables[i].cls.rwlock); |
d0918789 | 2760 | ots[i].active_count = htonl(classifier_count(&p->tables[i].cls)); |
0b4f2078 | 2761 | ovs_rwlock_unlock(&p->tables[i].cls.rwlock); |
6c1491fb | 2762 | } |
064af421 | 2763 | |
6c1491fb | 2764 | p->ofproto_class->get_tables(p, ots); |
064af421 | 2765 | |
c2f0373a BP |
2766 | /* Post-process the tables, dropping hidden tables. */ |
2767 | n_tables = p->n_tables; | |
254750ce BP |
2768 | for (i = 0; i < p->n_tables; i++) { |
2769 | const struct oftable *table = &p->tables[i]; | |
2770 | ||
c2f0373a BP |
2771 | if (table->flags & OFTABLE_HIDDEN) { |
2772 | n_tables = i; | |
2773 | break; | |
2774 | } | |
2775 | ||
254750ce BP |
2776 | if (table->name) { |
2777 | ovs_strzcpy(ots[i].name, table->name, sizeof ots[i].name); | |
2778 | } | |
2779 | ||
2780 | if (table->max_flows < ntohl(ots[i].max_entries)) { | |
2781 | ots[i].max_entries = htonl(table->max_flows); | |
2782 | } | |
2783 | } | |
2784 | ||
c2f0373a | 2785 | msg = ofputil_encode_table_stats_reply(ots, n_tables, request); |
b0421aa2 | 2786 | ofconn_send_reply(ofconn, msg); |
307975da SH |
2787 | |
2788 | free(ots); | |
2789 | ||
064af421 BP |
2790 | return 0; |
2791 | } | |
2792 | ||
abaad8cf | 2793 | static void |
63f2140a | 2794 | append_port_stat(struct ofport *port, struct list *replies) |
abaad8cf | 2795 | { |
f8e4867e | 2796 | struct ofputil_port_stats ops = { .port_no = port->pp.port_no }; |
abaad8cf | 2797 | |
65e0be10 BP |
2798 | calc_duration(port->created, time_msec(), |
2799 | &ops.duration_sec, &ops.duration_nsec); | |
2800 | ||
d295e8e9 JP |
2801 | /* Intentionally ignore return value, since errors will set |
2802 | * 'stats' to all-1s, which is correct for OpenFlow, and | |
abaad8cf | 2803 | * netdev_get_stats() will log errors. */ |
f8e4867e SH |
2804 | ofproto_port_get_stats(port, &ops.stats); |
2805 | ||
2806 | ofputil_append_port_stat(replies, &ops); | |
abaad8cf JP |
2807 | } |
2808 | ||
90bf1e07 | 2809 | static enum ofperr |
63f2140a | 2810 | handle_port_stats_request(struct ofconn *ofconn, |
982697a4 | 2811 | const struct ofp_header *request) |
064af421 | 2812 | { |
64ff1d96 | 2813 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 | 2814 | struct ofport *port; |
63f2140a | 2815 | struct list replies; |
4e022ec0 | 2816 | ofp_port_t port_no; |
f8e4867e SH |
2817 | enum ofperr error; |
2818 | ||
2819 | error = ofputil_decode_port_stats_request(request, &port_no); | |
2820 | if (error) { | |
2821 | return error; | |
2822 | } | |
064af421 | 2823 | |
982697a4 | 2824 | ofpmp_init(&replies, request); |
7f05e7ab | 2825 | if (port_no != OFPP_ANY) { |
f8e4867e | 2826 | port = ofproto_get_port(p, port_no); |
abaad8cf | 2827 | if (port) { |
63f2140a | 2828 | append_port_stat(port, &replies); |
abaad8cf JP |
2829 | } |
2830 | } else { | |
4e8e4213 | 2831 | HMAP_FOR_EACH (port, hmap_node, &p->ports) { |
63f2140a | 2832 | append_port_stat(port, &replies); |
abaad8cf | 2833 | } |
064af421 BP |
2834 | } |
2835 | ||
63f2140a | 2836 | ofconn_send_replies(ofconn, &replies); |
064af421 BP |
2837 | return 0; |
2838 | } | |
2839 | ||
2be393ed JP |
2840 | static enum ofperr |
2841 | handle_port_desc_stats_request(struct ofconn *ofconn, | |
982697a4 | 2842 | const struct ofp_header *request) |
2be393ed JP |
2843 | { |
2844 | struct ofproto *p = ofconn_get_ofproto(ofconn); | |
2e3fa633 | 2845 | enum ofp_version version; |
2be393ed JP |
2846 | struct ofport *port; |
2847 | struct list replies; | |
2848 | ||
982697a4 | 2849 | ofpmp_init(&replies, request); |
2be393ed | 2850 | |
2e3fa633 | 2851 | version = ofputil_protocol_to_ofp_version(ofconn_get_protocol(ofconn)); |
2be393ed | 2852 | HMAP_FOR_EACH (port, hmap_node, &p->ports) { |
2e3fa633 | 2853 | ofputil_append_port_desc_stats_reply(version, &port->pp, &replies); |
2be393ed JP |
2854 | } |
2855 | ||
2856 | ofconn_send_replies(ofconn, &replies); | |
2857 | return 0; | |
2858 | } | |
2859 | ||
98eaac36 JR |
2860 | static uint32_t |
2861 | hash_cookie(ovs_be64 cookie) | |
2862 | { | |
2863 | return hash_2words((OVS_FORCE uint64_t)cookie >> 32, | |
2864 | (OVS_FORCE uint64_t)cookie); | |
2865 | } | |
2866 | ||
2867 | static void | |
2868 | cookies_insert(struct ofproto *ofproto, struct rule *rule) | |
2869 | { | |
2870 | hindex_insert(&ofproto->cookies, &rule->cookie_node, | |
2871 | hash_cookie(rule->flow_cookie)); | |
2872 | } | |
2873 | ||
2874 | static void | |
2875 | cookies_remove(struct ofproto *ofproto, struct rule *rule) | |
2876 | { | |
2877 | hindex_remove(&ofproto->cookies, &rule->cookie_node); | |
2878 | } | |
2879 | ||
2880 | static void | |
2881 | ofproto_rule_change_cookie(struct ofproto *ofproto, struct rule *rule, | |
2882 | ovs_be64 new_cookie) | |
2883 | { | |
2884 | if (new_cookie != rule->flow_cookie) { | |
2885 | cookies_remove(ofproto, rule); | |
2886 | ||
884e1dc4 | 2887 | ovs_rwlock_wrlock(&rule->rwlock); |
98eaac36 | 2888 | rule->flow_cookie = new_cookie; |
884e1dc4 | 2889 | ovs_rwlock_unlock(&rule->rwlock); |
98eaac36 JR |
2890 | |
2891 | cookies_insert(ofproto, rule); | |
2892 | } | |
2893 | } | |
2894 | ||
c6ebb8fb | 2895 | static void |
65e0be10 BP |
2896 | calc_duration(long long int start, long long int now, |
2897 | uint32_t *sec, uint32_t *nsec) | |
c6ebb8fb | 2898 | { |
f27f2134 | 2899 | long long int msecs = now - start; |
588cd7b5 BP |
2900 | *sec = msecs / 1000; |
2901 | *nsec = (msecs % 1000) * (1000 * 1000); | |
2902 | } | |
2903 | ||
48266274 BP |
2904 | /* Checks whether 'table_id' is 0xff or a valid table ID in 'ofproto'. Returns |
2905 | * 0 if 'table_id' is OK, otherwise an OpenFlow error code. */ | |
90bf1e07 | 2906 | static enum ofperr |
48266274 BP |
2907 | check_table_id(const struct ofproto *ofproto, uint8_t table_id) |
2908 | { | |
2909 | return (table_id == 0xff || table_id < ofproto->n_tables | |
2910 | ? 0 | |
c22c56bd | 2911 | : OFPERR_OFPBRC_BAD_TABLE_ID); |
48266274 BP |
2912 | |
2913 | } | |
2914 | ||
5c67e4af | 2915 | static struct oftable * |
d4ce8a49 | 2916 | next_visible_table(const struct ofproto *ofproto, uint8_t table_id) |
5c67e4af BP |
2917 | { |
2918 | struct oftable *table; | |
2919 | ||
2920 | for (table = &ofproto->tables[table_id]; | |
2921 | table < &ofproto->tables[ofproto->n_tables]; | |
2922 | table++) { | |
2923 | if (!(table->flags & OFTABLE_HIDDEN)) { | |
2924 | return table; | |
2925 | } | |
2926 | } | |
2927 | ||
2928 | return NULL; | |
2929 | } | |
2930 | ||
d0918789 | 2931 | static struct oftable * |
d4ce8a49 | 2932 | first_matching_table(const struct ofproto *ofproto, uint8_t table_id) |
064af421 | 2933 | { |
6c1491fb | 2934 | if (table_id == 0xff) { |
5c67e4af | 2935 | return next_visible_table(ofproto, 0); |
6c1491fb BP |
2936 | } else if (table_id < ofproto->n_tables) { |
2937 | return &ofproto->tables[table_id]; | |
a02e5331 | 2938 | } else { |
6c1491fb | 2939 | return NULL; |
a02e5331 | 2940 | } |
064af421 BP |
2941 | } |
2942 | ||
d0918789 | 2943 | static struct oftable * |
d4ce8a49 BP |
2944 | next_matching_table(const struct ofproto *ofproto, |
2945 | const struct oftable *table, uint8_t table_id) | |
6c1491fb | 2946 | { |
5c67e4af BP |
2947 | return (table_id == 0xff |
2948 | ? next_visible_table(ofproto, (table - ofproto->tables) + 1) | |
6c1491fb BP |
2949 | : NULL); |
2950 | } | |
2951 | ||
d0918789 | 2952 | /* Assigns TABLE to each oftable, in turn, that matches TABLE_ID in OFPROTO: |
6c1491fb BP |
2953 | * |
2954 | * - If TABLE_ID is 0xff, this iterates over every classifier table in | |
5c67e4af | 2955 | * OFPROTO, skipping tables marked OFTABLE_HIDDEN. |
6c1491fb BP |
2956 | * |
2957 | * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates | |
5c67e4af BP |
2958 | * only once, for that table. (This can be used to access tables marked |
2959 | * OFTABLE_HIDDEN.) | |
6c1491fb | 2960 | * |
48266274 BP |
2961 | * - Otherwise, TABLE_ID isn't valid for OFPROTO, so the loop won't be |
2962 | * entered at all. (Perhaps you should have validated TABLE_ID with | |
2963 | * check_table_id().) | |
6c1491fb BP |
2964 | * |
2965 | * All parameters are evaluated multiple times. | |
2966 | */ | |
d0918789 BP |
2967 | #define FOR_EACH_MATCHING_TABLE(TABLE, TABLE_ID, OFPROTO) \ |
2968 | for ((TABLE) = first_matching_table(OFPROTO, TABLE_ID); \ | |
2969 | (TABLE) != NULL; \ | |
2970 | (TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID)) | |
6c1491fb | 2971 | |
a9b22b7f BP |
2972 | /* Initializes 'criteria' in a straightforward way based on the other |
2973 | * parameters. | |
2974 | * | |
2975 | * For "loose" matching, the 'priority' parameter is unimportant and may be | |
2976 | * supplied as 0. */ | |
2977 | static void | |
2978 | rule_criteria_init(struct rule_criteria *criteria, uint8_t table_id, | |
2979 | const struct match *match, unsigned int priority, | |
2980 | ovs_be64 cookie, ovs_be64 cookie_mask, | |
2981 | ofp_port_t out_port, uint32_t out_group) | |
2982 | { | |
2983 | criteria->table_id = table_id; | |
2984 | cls_rule_init(&criteria->cr, match, priority); | |
2985 | criteria->cookie = cookie; | |
2986 | criteria->cookie_mask = cookie_mask; | |
2987 | criteria->out_port = out_port; | |
2988 | criteria->out_group = out_group; | |
2989 | } | |
2990 | ||
2991 | static void | |
2992 | rule_criteria_destroy(struct rule_criteria *criteria) | |
2993 | { | |
2994 | cls_rule_destroy(&criteria->cr); | |
2995 | } | |
2996 | ||
6c1d7642 | 2997 | static enum ofperr |
a9b22b7f BP |
2998 | collect_rule(struct rule *rule, const struct rule_criteria *c, |
2999 | struct list *rules) | |
6c1d7642 BP |
3000 | { |
3001 | if (ofproto_rule_is_hidden(rule)) { | |
3002 | return 0; | |
3003 | } else if (rule->pending) { | |
3004 | return OFPROTO_POSTPONE; | |
3005 | } else { | |
a9b22b7f BP |
3006 | if ((c->table_id == rule->table_id || c->table_id == 0xff) |
3007 | && ofproto_rule_has_out_port(rule, c->out_port) | |
3008 | && ofproto_rule_has_out_group(rule, c->out_group) | |
3009 | && !((rule->flow_cookie ^ c->cookie) & c->cookie_mask)) { | |
6c1d7642 BP |
3010 | list_push_back(rules, &rule->ofproto_node); |
3011 | } | |
3012 | return 0; | |
3013 | } | |
3014 | } | |
3015 | ||
a9b22b7f BP |
3016 | /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches |
3017 | * on classifiers rules are done in the "loose" way required for OpenFlow | |
3018 | * OFPFC_MODIFY and OFPFC_DELETE requests. Puts the selected rules on list | |
9ed18e46 BP |
3019 | * 'rules'. |
3020 | * | |
9ed18e46 BP |
3021 | * Hidden rules are always omitted. |
3022 | * | |
3023 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 3024 | static enum ofperr |
a9b22b7f BP |
3025 | collect_rules_loose(struct ofproto *ofproto, |
3026 | const struct rule_criteria *criteria, struct list *rules) | |
9ed18e46 | 3027 | { |
d0918789 | 3028 | struct oftable *table; |
90bf1e07 | 3029 | enum ofperr error; |
48266274 | 3030 | |
a9b22b7f | 3031 | error = check_table_id(ofproto, criteria->table_id); |
48266274 BP |
3032 | if (error) { |
3033 | return error; | |
3034 | } | |
9ed18e46 BP |
3035 | |
3036 | list_init(rules); | |
98eaac36 | 3037 | |
a9b22b7f | 3038 | if (criteria->cookie_mask == htonll(UINT64_MAX)) { |
98eaac36 JR |
3039 | struct rule *rule; |
3040 | ||
a9b22b7f BP |
3041 | HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node, |
3042 | hash_cookie(criteria->cookie), | |
98eaac36 | 3043 | &ofproto->cookies) { |
a9b22b7f BP |
3044 | if (cls_rule_is_loose_match(&rule->cr, &criteria->cr.match)) { |
3045 | error = collect_rule(rule, criteria, rules); | |
6c1d7642 BP |
3046 | if (error) { |
3047 | break; | |
98eaac36 JR |
3048 | } |
3049 | } | |
3050 | } | |
6c1d7642 | 3051 | } else { |
a9b22b7f | 3052 | FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) { |
6c1d7642 BP |
3053 | struct cls_cursor cursor; |
3054 | struct rule *rule; | |
9ed18e46 | 3055 | |
6c1d7642 | 3056 | ovs_rwlock_rdlock(&table->cls.rwlock); |
a9b22b7f | 3057 | cls_cursor_init(&cursor, &table->cls, &criteria->cr); |
6c1d7642 | 3058 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
a9b22b7f | 3059 | error = collect_rule(rule, criteria, rules); |
6c1d7642 BP |
3060 | if (error) { |
3061 | break; | |
3062 | } | |
9ed18e46 | 3063 | } |
6c1d7642 | 3064 | ovs_rwlock_unlock(&table->cls.rwlock); |
9ed18e46 BP |
3065 | } |
3066 | } | |
48d28ac1 | 3067 | |
48d28ac1 | 3068 | return error; |
9ed18e46 BP |
3069 | } |
3070 | ||
a9b22b7f BP |
3071 | /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches |
3072 | * on classifiers rules are done in the "strict" way required for OpenFlow | |
3073 | * OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests. Puts the selected | |
3074 | * rules on list 'rules'. | |
9ed18e46 BP |
3075 | * |
3076 | * Hidden rules are always omitted. | |
3077 | * | |
3078 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 3079 | static enum ofperr |
a9b22b7f BP |
3080 | collect_rules_strict(struct ofproto *ofproto, |
3081 | const struct rule_criteria *criteria, struct list *rules) | |
9ed18e46 | 3082 | { |
d0918789 | 3083 | struct oftable *table; |
48266274 BP |
3084 | int error; |
3085 | ||
a9b22b7f | 3086 | error = check_table_id(ofproto, criteria->table_id); |
48266274 BP |
3087 | if (error) { |
3088 | return error; | |
3089 | } | |
9ed18e46 BP |
3090 | |
3091 | list_init(rules); | |
98eaac36 | 3092 | |
a9b22b7f | 3093 | if (criteria->cookie_mask == htonll(UINT64_MAX)) { |
98eaac36 JR |
3094 | struct rule *rule; |
3095 | ||
a9b22b7f BP |
3096 | HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node, |
3097 | hash_cookie(criteria->cookie), | |
98eaac36 | 3098 | &ofproto->cookies) { |
a9b22b7f BP |
3099 | if (cls_rule_equal(&rule->cr, &criteria->cr)) { |
3100 | error = collect_rule(rule, criteria, rules); | |
6c1d7642 BP |
3101 | if (error) { |
3102 | break; | |
98eaac36 JR |
3103 | } |
3104 | } | |
3105 | } | |
6c1d7642 | 3106 | } else { |
a9b22b7f | 3107 | FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) { |
6c1d7642 | 3108 | struct rule *rule; |
9ed18e46 | 3109 | |
6c1d7642 | 3110 | ovs_rwlock_rdlock(&table->cls.rwlock); |
a9b22b7f BP |
3111 | rule = rule_from_cls_rule(classifier_find_rule_exactly( |
3112 | &table->cls, &criteria->cr)); | |
6c1d7642 BP |
3113 | ovs_rwlock_unlock(&table->cls.rwlock); |
3114 | if (rule) { | |
a9b22b7f | 3115 | error = collect_rule(rule, criteria, rules); |
6c1d7642 BP |
3116 | if (error) { |
3117 | break; | |
3118 | } | |
9ed18e46 BP |
3119 | } |
3120 | } | |
3121 | } | |
48d28ac1 | 3122 | |
6c1d7642 | 3123 | return error; |
9ed18e46 BP |
3124 | } |
3125 | ||
f27f2134 BP |
3126 | /* Returns 'age_ms' (a duration in milliseconds), converted to seconds and |
3127 | * forced into the range of a uint16_t. */ | |
3128 | static int | |
3129 | age_secs(long long int age_ms) | |
3130 | { | |
3131 | return (age_ms < 0 ? 0 | |
3132 | : age_ms >= UINT16_MAX * 1000 ? UINT16_MAX | |
3133 | : (unsigned int) age_ms / 1000); | |
3134 | } | |
3135 | ||
90bf1e07 | 3136 | static enum ofperr |
63f2140a | 3137 | handle_flow_stats_request(struct ofconn *ofconn, |
982697a4 | 3138 | const struct ofp_header *request) |
064af421 | 3139 | { |
64ff1d96 | 3140 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 3141 | struct ofputil_flow_stats_request fsr; |
a9b22b7f | 3142 | struct rule_criteria criteria; |
63f2140a | 3143 | struct list replies; |
9ed18e46 BP |
3144 | struct list rules; |
3145 | struct rule *rule; | |
90bf1e07 | 3146 | enum ofperr error; |
09246b99 | 3147 | |
982697a4 | 3148 | error = ofputil_decode_flow_stats_request(&fsr, request); |
09246b99 BP |
3149 | if (error) { |
3150 | return error; | |
3151 | } | |
3152 | ||
a9b22b7f BP |
3153 | rule_criteria_init(&criteria, fsr.table_id, &fsr.match, 0, fsr.cookie, |
3154 | fsr.cookie_mask, fsr.out_port, fsr.out_group); | |
3155 | error = collect_rules_loose(ofproto, &criteria, &rules); | |
3156 | rule_criteria_destroy(&criteria); | |
9ed18e46 BP |
3157 | if (error) { |
3158 | return error; | |
3159 | } | |
5ecc9d81 | 3160 | |
982697a4 | 3161 | ofpmp_init(&replies, request); |
9ed18e46 | 3162 | LIST_FOR_EACH (rule, ofproto_node, &rules) { |
f27f2134 | 3163 | long long int now = time_msec(); |
9ed18e46 BP |
3164 | struct ofputil_flow_stats fs; |
3165 | ||
5cb7a798 | 3166 | minimatch_expand(&rule->cr.match, &fs.match); |
81a76618 | 3167 | fs.priority = rule->cr.priority; |
9ed18e46 BP |
3168 | fs.cookie = rule->flow_cookie; |
3169 | fs.table_id = rule->table_id; | |
65e0be10 | 3170 | calc_duration(rule->created, now, &fs.duration_sec, &fs.duration_nsec); |
f27f2134 BP |
3171 | fs.idle_age = age_secs(now - rule->used); |
3172 | fs.hard_age = age_secs(now - rule->modified); | |
9ed18e46 BP |
3173 | ofproto->ofproto_class->rule_get_stats(rule, &fs.packet_count, |
3174 | &fs.byte_count); | |
f25d0cf3 BP |
3175 | fs.ofpacts = rule->ofpacts; |
3176 | fs.ofpacts_len = rule->ofpacts_len; | |
a3779dbc EJ |
3177 | |
3178 | ovs_mutex_lock(&rule->timeout_mutex); | |
3179 | fs.idle_timeout = rule->idle_timeout; | |
3180 | fs.hard_timeout = rule->hard_timeout; | |
3181 | ovs_mutex_unlock(&rule->timeout_mutex); | |
3182 | ||
3f517bcd DB |
3183 | fs.flags = rule->flags; |
3184 | ||
9ed18e46 | 3185 | ofputil_append_flow_stats_reply(&fs, &replies); |
3c4486a5 | 3186 | } |
63f2140a | 3187 | ofconn_send_replies(ofconn, &replies); |
5ecc9d81 | 3188 | |
09246b99 BP |
3189 | return 0; |
3190 | } | |
3191 | ||
4f2cad2c | 3192 | static void |
3394b5b6 | 3193 | flow_stats_ds(struct rule *rule, struct ds *results) |
4f2cad2c | 3194 | { |
4f2cad2c | 3195 | uint64_t packet_count, byte_count; |
4f2cad2c | 3196 | |
abe529af BP |
3197 | rule->ofproto->ofproto_class->rule_get_stats(rule, |
3198 | &packet_count, &byte_count); | |
4f2cad2c | 3199 | |
6c1491fb BP |
3200 | if (rule->table_id != 0) { |
3201 | ds_put_format(results, "table_id=%"PRIu8", ", rule->table_id); | |
3202 | } | |
4f2cad2c JP |
3203 | ds_put_format(results, "duration=%llds, ", |
3204 | (time_msec() - rule->created) / 1000); | |
52ae00b3 | 3205 | ds_put_format(results, "priority=%u, ", rule->cr.priority); |
4f2cad2c JP |
3206 | ds_put_format(results, "n_packets=%"PRIu64", ", packet_count); |
3207 | ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count); | |
cb833cf6 | 3208 | cls_rule_format(&rule->cr, results); |
a5df0e72 | 3209 | ds_put_char(results, ','); |
aa30ae4e | 3210 | ofpacts_format(rule->ofpacts, rule->ofpacts_len, results); |
4f2cad2c JP |
3211 | ds_put_cstr(results, "\n"); |
3212 | } | |
3213 | ||
d295e8e9 | 3214 | /* Adds a pretty-printed description of all flows to 'results', including |
ee8b231c | 3215 | * hidden flows (e.g., set up by in-band control). */ |
4f2cad2c JP |
3216 | void |
3217 | ofproto_get_all_flows(struct ofproto *p, struct ds *results) | |
3218 | { | |
d0918789 | 3219 | struct oftable *table; |
6c1491fb | 3220 | |
d0918789 | 3221 | OFPROTO_FOR_EACH_TABLE (table, p) { |
6c1491fb BP |
3222 | struct cls_cursor cursor; |
3223 | struct rule *rule; | |
064af421 | 3224 | |
0b4f2078 | 3225 | ovs_rwlock_rdlock(&table->cls.rwlock); |
d0918789 | 3226 | cls_cursor_init(&cursor, &table->cls, NULL); |
6c1491fb BP |
3227 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
3228 | flow_stats_ds(rule, results); | |
3229 | } | |
0b4f2078 | 3230 | ovs_rwlock_unlock(&table->cls.rwlock); |
064af421 | 3231 | } |
064af421 BP |
3232 | } |
3233 | ||
b5827b24 BP |
3234 | /* Obtains the NetFlow engine type and engine ID for 'ofproto' into |
3235 | * '*engine_type' and '*engine_id', respectively. */ | |
3236 | void | |
3237 | ofproto_get_netflow_ids(const struct ofproto *ofproto, | |
3238 | uint8_t *engine_type, uint8_t *engine_id) | |
3239 | { | |
abe529af | 3240 | ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id); |
b5827b24 BP |
3241 | } |
3242 | ||
9a9e3786 BP |
3243 | /* Checks the status of CFM configured on 'ofp_port' within 'ofproto'. Returns |
3244 | * true if the port's CFM status was successfully stored into '*status'. | |
3245 | * Returns false if the port did not have CFM configured, in which case | |
3246 | * '*status' is indeterminate. | |
3247 | * | |
13b1b2ae | 3248 | * The caller must provide and owns '*status', and must free 'status->rmps'. */ |
9a9e3786 | 3249 | bool |
4e022ec0 | 3250 | ofproto_port_get_cfm_status(const struct ofproto *ofproto, ofp_port_t ofp_port, |
9a9e3786 | 3251 | struct ofproto_cfm_status *status) |
3967a833 MM |
3252 | { |
3253 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
9a9e3786 BP |
3254 | return (ofport |
3255 | && ofproto->ofproto_class->get_cfm_status | |
3256 | && ofproto->ofproto_class->get_cfm_status(ofport, status)); | |
3967a833 MM |
3257 | } |
3258 | ||
90bf1e07 | 3259 | static enum ofperr |
76c93b22 | 3260 | handle_aggregate_stats_request(struct ofconn *ofconn, |
982697a4 | 3261 | const struct ofp_header *oh) |
27d34fce | 3262 | { |
76c93b22 | 3263 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 3264 | struct ofputil_flow_stats_request request; |
76c93b22 | 3265 | struct ofputil_aggregate_stats stats; |
5e9d0469 | 3266 | bool unknown_packets, unknown_bytes; |
a9b22b7f | 3267 | struct rule_criteria criteria; |
76c93b22 | 3268 | struct ofpbuf *reply; |
9ed18e46 BP |
3269 | struct list rules; |
3270 | struct rule *rule; | |
90bf1e07 | 3271 | enum ofperr error; |
27d34fce | 3272 | |
982697a4 | 3273 | error = ofputil_decode_flow_stats_request(&request, oh); |
76c93b22 BP |
3274 | if (error) { |
3275 | return error; | |
3276 | } | |
5ecc9d81 | 3277 | |
a9b22b7f BP |
3278 | rule_criteria_init(&criteria, request.table_id, &request.match, 0, |
3279 | request.cookie, request.cookie_mask, | |
3280 | request.out_port, request.out_group); | |
3281 | error = collect_rules_loose(ofproto, &criteria, &rules); | |
3282 | rule_criteria_destroy(&criteria); | |
9ed18e46 BP |
3283 | if (error) { |
3284 | return error; | |
3285 | } | |
3c4486a5 | 3286 | |
9ed18e46 | 3287 | memset(&stats, 0, sizeof stats); |
5e9d0469 | 3288 | unknown_packets = unknown_bytes = false; |
9ed18e46 BP |
3289 | LIST_FOR_EACH (rule, ofproto_node, &rules) { |
3290 | uint64_t packet_count; | |
3291 | uint64_t byte_count; | |
5ecc9d81 | 3292 | |
9ed18e46 BP |
3293 | ofproto->ofproto_class->rule_get_stats(rule, &packet_count, |
3294 | &byte_count); | |
5ecc9d81 | 3295 | |
5e9d0469 BP |
3296 | if (packet_count == UINT64_MAX) { |
3297 | unknown_packets = true; | |
3298 | } else { | |
3299 | stats.packet_count += packet_count; | |
3300 | } | |
3301 | ||
3302 | if (byte_count == UINT64_MAX) { | |
3303 | unknown_bytes = true; | |
3304 | } else { | |
3305 | stats.byte_count += byte_count; | |
3306 | } | |
3307 | ||
9ed18e46 | 3308 | stats.flow_count++; |
3c4486a5 | 3309 | } |
5e9d0469 BP |
3310 | if (unknown_packets) { |
3311 | stats.packet_count = UINT64_MAX; | |
3312 | } | |
3313 | if (unknown_bytes) { | |
3314 | stats.byte_count = UINT64_MAX; | |
3315 | } | |
27d34fce | 3316 | |
982697a4 | 3317 | reply = ofputil_encode_aggregate_stats_reply(&stats, oh); |
76c93b22 | 3318 | ofconn_send_reply(ofconn, reply); |
09246b99 BP |
3319 | |
3320 | return 0; | |
3321 | } | |
3322 | ||
c1c9c9c4 | 3323 | struct queue_stats_cbdata { |
ca0f572c | 3324 | struct ofport *ofport; |
63f2140a | 3325 | struct list replies; |
6dc34a0d | 3326 | long long int now; |
c1c9c9c4 BP |
3327 | }; |
3328 | ||
3329 | static void | |
db9220c3 | 3330 | put_queue_stats(struct queue_stats_cbdata *cbdata, uint32_t queue_id, |
c1c9c9c4 BP |
3331 | const struct netdev_queue_stats *stats) |
3332 | { | |
6dc34a0d | 3333 | struct ofputil_queue_stats oqs; |
c1c9c9c4 | 3334 | |
6dc34a0d BP |
3335 | oqs.port_no = cbdata->ofport->pp.port_no; |
3336 | oqs.queue_id = queue_id; | |
3337 | oqs.tx_bytes = stats->tx_bytes; | |
3338 | oqs.tx_packets = stats->tx_packets; | |
3339 | oqs.tx_errors = stats->tx_errors; | |
3340 | if (stats->created != LLONG_MIN) { | |
3341 | calc_duration(stats->created, cbdata->now, | |
3342 | &oqs.duration_sec, &oqs.duration_nsec); | |
3343 | } else { | |
3344 | oqs.duration_sec = oqs.duration_nsec = UINT32_MAX; | |
3345 | } | |
64626975 | 3346 | ofputil_append_queue_stat(&cbdata->replies, &oqs); |
c1c9c9c4 BP |
3347 | } |
3348 | ||
3349 | static void | |
db9220c3 | 3350 | handle_queue_stats_dump_cb(uint32_t queue_id, |
c1c9c9c4 BP |
3351 | struct netdev_queue_stats *stats, |
3352 | void *cbdata_) | |
3353 | { | |
3354 | struct queue_stats_cbdata *cbdata = cbdata_; | |
3355 | ||
3356 | put_queue_stats(cbdata, queue_id, stats); | |
3357 | } | |
3358 | ||
0414d158 | 3359 | static enum ofperr |
ca0f572c | 3360 | handle_queue_stats_for_port(struct ofport *port, uint32_t queue_id, |
c1c9c9c4 BP |
3361 | struct queue_stats_cbdata *cbdata) |
3362 | { | |
ca0f572c | 3363 | cbdata->ofport = port; |
c1c9c9c4 BP |
3364 | if (queue_id == OFPQ_ALL) { |
3365 | netdev_dump_queue_stats(port->netdev, | |
3366 | handle_queue_stats_dump_cb, cbdata); | |
3367 | } else { | |
3368 | struct netdev_queue_stats stats; | |
3369 | ||
1ac788f6 BP |
3370 | if (!netdev_get_queue_stats(port->netdev, queue_id, &stats)) { |
3371 | put_queue_stats(cbdata, queue_id, &stats); | |
0414d158 BP |
3372 | } else { |
3373 | return OFPERR_OFPQOFC_BAD_QUEUE; | |
1ac788f6 | 3374 | } |
c1c9c9c4 | 3375 | } |
0414d158 | 3376 | return 0; |
c1c9c9c4 BP |
3377 | } |
3378 | ||
90bf1e07 | 3379 | static enum ofperr |
63f2140a | 3380 | handle_queue_stats_request(struct ofconn *ofconn, |
982697a4 | 3381 | const struct ofp_header *rq) |
c1c9c9c4 | 3382 | { |
64ff1d96 | 3383 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
c1c9c9c4 | 3384 | struct queue_stats_cbdata cbdata; |
0414d158 | 3385 | struct ofport *port; |
0414d158 | 3386 | enum ofperr error; |
64626975 | 3387 | struct ofputil_queue_stats_request oqsr; |
c1c9c9c4 | 3388 | |
c1c9c9c4 BP |
3389 | COVERAGE_INC(ofproto_queue_req); |
3390 | ||
982697a4 | 3391 | ofpmp_init(&cbdata.replies, rq); |
6dc34a0d | 3392 | cbdata.now = time_msec(); |
c1c9c9c4 | 3393 | |
64626975 SH |
3394 | error = ofputil_decode_queue_stats_request(rq, &oqsr); |
3395 | if (error) { | |
3396 | return error; | |
3397 | } | |
3398 | ||
7f05e7ab | 3399 | if (oqsr.port_no == OFPP_ANY) { |
0414d158 | 3400 | error = OFPERR_OFPQOFC_BAD_QUEUE; |
4e8e4213 | 3401 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
64626975 | 3402 | if (!handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata)) { |
0414d158 BP |
3403 | error = 0; |
3404 | } | |
c1c9c9c4 | 3405 | } |
0414d158 | 3406 | } else { |
64626975 | 3407 | port = ofproto_get_port(ofproto, oqsr.port_no); |
0414d158 | 3408 | error = (port |
64626975 | 3409 | ? handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata) |
0414d158 BP |
3410 | : OFPERR_OFPQOFC_BAD_PORT); |
3411 | } | |
3412 | if (!error) { | |
3413 | ofconn_send_replies(ofconn, &cbdata.replies); | |
c1c9c9c4 | 3414 | } else { |
63f2140a | 3415 | ofpbuf_list_delete(&cbdata.replies); |
c1c9c9c4 | 3416 | } |
c1c9c9c4 | 3417 | |
0414d158 | 3418 | return error; |
c1c9c9c4 | 3419 | } |
7ee20df1 BP |
3420 | |
3421 | static bool | |
3422 | is_flow_deletion_pending(const struct ofproto *ofproto, | |
3423 | const struct cls_rule *cls_rule, | |
3424 | uint8_t table_id) | |
3425 | { | |
3426 | if (!hmap_is_empty(&ofproto->deletions)) { | |
3427 | struct ofoperation *op; | |
3428 | ||
3429 | HMAP_FOR_EACH_WITH_HASH (op, hmap_node, | |
3430 | cls_rule_hash(cls_rule, table_id), | |
3431 | &ofproto->deletions) { | |
3432 | if (cls_rule_equal(cls_rule, &op->rule->cr)) { | |
3433 | return true; | |
3434 | } | |
3435 | } | |
3436 | } | |
3437 | ||
3438 | return false; | |
3439 | } | |
3440 | ||
8037acb4 BP |
3441 | static enum ofperr |
3442 | evict_rule_from_table(struct ofproto *ofproto, struct oftable *table) | |
3443 | { | |
3444 | struct rule *rule; | |
3445 | size_t n_rules; | |
3446 | ||
3447 | ovs_rwlock_rdlock(&table->cls.rwlock); | |
3448 | n_rules = classifier_count(&table->cls); | |
3449 | ovs_rwlock_unlock(&table->cls.rwlock); | |
3450 | ||
3451 | if (n_rules < table->max_flows) { | |
3452 | return 0; | |
3453 | } else if (!choose_rule_to_evict(table, &rule)) { | |
3454 | return OFPERR_OFPFMFC_TABLE_FULL; | |
3455 | } else if (rule->pending) { | |
884e1dc4 | 3456 | ovs_rwlock_unlock(&rule->rwlock); |
8037acb4 BP |
3457 | return OFPROTO_POSTPONE; |
3458 | } else { | |
3459 | struct ofopgroup *group; | |
3460 | ||
3461 | group = ofopgroup_create_unattached(ofproto); | |
3462 | delete_flow__(rule, group, OFPRR_EVICTION); | |
3463 | ofopgroup_submit(group); | |
3464 | ||
3465 | return 0; | |
3466 | } | |
3467 | } | |
3468 | ||
79eee1eb BP |
3469 | /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT |
3470 | * in which no matching flow already exists in the flow table. | |
3471 | * | |
3472 | * Adds the flow specified by 'ofm', which is followed by 'n_actions' | |
75a75043 | 3473 | * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow |
90bf1e07 BP |
3474 | * error code on failure, or OFPROTO_POSTPONE if the operation cannot be |
3475 | * initiated now but may be retried later. | |
79eee1eb | 3476 | * |
f25d0cf3 BP |
3477 | * Upon successful return, takes ownership of 'fm->ofpacts'. On failure, |
3478 | * ownership remains with the caller. | |
3479 | * | |
79eee1eb BP |
3480 | * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id, |
3481 | * if any. */ | |
90bf1e07 | 3482 | static enum ofperr |
a9a2da38 | 3483 | add_flow(struct ofproto *ofproto, struct ofconn *ofconn, |
e3b56933 | 3484 | struct ofputil_flow_mod *fm, const struct ofp_header *request) |
064af421 | 3485 | { |
d0918789 | 3486 | struct oftable *table; |
7ee20df1 | 3487 | struct ofopgroup *group; |
8037acb4 | 3488 | struct cls_rule cr; |
064af421 | 3489 | struct rule *rule; |
5a361239 | 3490 | uint8_t table_id; |
064af421 BP |
3491 | int error; |
3492 | ||
48266274 BP |
3493 | error = check_table_id(ofproto, fm->table_id); |
3494 | if (error) { | |
3495 | return error; | |
3496 | } | |
3497 | ||
7ee20df1 BP |
3498 | /* Pick table. */ |
3499 | if (fm->table_id == 0xff) { | |
13521ff5 | 3500 | if (ofproto->ofproto_class->rule_choose_table) { |
81a76618 BP |
3501 | error = ofproto->ofproto_class->rule_choose_table(ofproto, |
3502 | &fm->match, | |
7ee20df1 BP |
3503 | &table_id); |
3504 | if (error) { | |
3505 | return error; | |
3506 | } | |
cb22974d | 3507 | ovs_assert(table_id < ofproto->n_tables); |
7ee20df1 | 3508 | } else { |
5a361239 | 3509 | table_id = 0; |
7ee20df1 BP |
3510 | } |
3511 | } else if (fm->table_id < ofproto->n_tables) { | |
5a361239 | 3512 | table_id = fm->table_id; |
7ee20df1 | 3513 | } else { |
c22c56bd | 3514 | return OFPERR_OFPBRC_BAD_TABLE_ID; |
064af421 BP |
3515 | } |
3516 | ||
5a361239 JR |
3517 | table = &ofproto->tables[table_id]; |
3518 | ||
5c67e4af BP |
3519 | if (table->flags & OFTABLE_READONLY) { |
3520 | return OFPERR_OFPBRC_EPERM; | |
3521 | } | |
3522 | ||
8037acb4 BP |
3523 | cls_rule_init(&cr, &fm->match, fm->priority); |
3524 | ||
b277c7cc BP |
3525 | /* Transform "add" into "modify" if there's an existing identical flow. */ |
3526 | ovs_rwlock_rdlock(&table->cls.rwlock); | |
8037acb4 | 3527 | rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls, &cr)); |
b277c7cc BP |
3528 | ovs_rwlock_unlock(&table->cls.rwlock); |
3529 | if (rule) { | |
8037acb4 | 3530 | cls_rule_destroy(&cr); |
b277c7cc BP |
3531 | if (!rule_is_modifiable(rule)) { |
3532 | return OFPERR_OFPBRC_EPERM; | |
3533 | } else if (rule->pending) { | |
3534 | return OFPROTO_POSTPONE; | |
3535 | } else { | |
3536 | struct list rules; | |
3537 | ||
3538 | list_init(&rules); | |
3539 | list_push_back(&rules, &rule->ofproto_node); | |
3540 | fm->modify_cookie = true; | |
3541 | return modify_flows__(ofproto, ofconn, fm, request, &rules); | |
3542 | } | |
3543 | } | |
3544 | ||
e3b56933 JR |
3545 | /* Verify actions. */ |
3546 | error = ofproto_check_ofpacts(ofproto, fm->ofpacts, fm->ofpacts_len, | |
3547 | &fm->match.flow, table_id); | |
3548 | if (error) { | |
3ef7ad56 | 3549 | cls_rule_destroy(&cr); |
e3b56933 JR |
3550 | return error; |
3551 | } | |
3552 | ||
7ee20df1 | 3553 | /* Serialize against pending deletion. */ |
8037acb4 BP |
3554 | if (is_flow_deletion_pending(ofproto, &cr, table_id)) { |
3555 | cls_rule_destroy(&cr); | |
7ee20df1 | 3556 | return OFPROTO_POSTPONE; |
afe75089 | 3557 | } |
064af421 | 3558 | |
81a76618 | 3559 | /* Check for overlap, if requested. */ |
0fb88c18 | 3560 | if (fm->flags & OFPUTIL_FF_CHECK_OVERLAP) { |
c09f755d BP |
3561 | bool overlaps; |
3562 | ||
3563 | ovs_rwlock_rdlock(&table->cls.rwlock); | |
8037acb4 | 3564 | overlaps = classifier_rule_overlaps(&table->cls, &cr); |
c09f755d BP |
3565 | ovs_rwlock_unlock(&table->cls.rwlock); |
3566 | ||
3567 | if (overlaps) { | |
8037acb4 | 3568 | cls_rule_destroy(&cr); |
c09f755d BP |
3569 | return OFPERR_OFPFMFC_OVERLAP; |
3570 | } | |
7ee20df1 | 3571 | } |
81a76618 | 3572 | |
8037acb4 BP |
3573 | /* If necessary, evict an existing rule to clear out space. */ |
3574 | error = evict_rule_from_table(ofproto, table); | |
3575 | if (error) { | |
3576 | cls_rule_destroy(&cr); | |
3577 | return error; | |
3578 | } | |
2e1ae200 | 3579 | |
8037acb4 BP |
3580 | /* Allocate new rule. */ |
3581 | rule = ofproto->ofproto_class->rule_alloc(); | |
3582 | if (!rule) { | |
3583 | cls_rule_destroy(&cr); | |
3584 | VLOG_WARN_RL(&rl, "%s: failed to create rule (%s)", | |
3585 | ofproto->name, ovs_strerror(error)); | |
3586 | return ENOMEM; | |
3587 | } | |
3588 | ||
3589 | /* Initialize base state. */ | |
7ee20df1 | 3590 | rule->ofproto = ofproto; |
8037acb4 | 3591 | cls_rule_move(&rule->cr, &cr); |
7ee20df1 | 3592 | rule->pending = NULL; |
623e1caf | 3593 | rule->flow_cookie = fm->new_cookie; |
1745cd08 | 3594 | rule->created = rule->modified = rule->used = time_msec(); |
a3779dbc | 3595 | |
834d6caf | 3596 | ovs_mutex_init(&rule->timeout_mutex); |
a3779dbc | 3597 | ovs_mutex_lock(&rule->timeout_mutex); |
7ee20df1 BP |
3598 | rule->idle_timeout = fm->idle_timeout; |
3599 | rule->hard_timeout = fm->hard_timeout; | |
a3779dbc EJ |
3600 | ovs_mutex_unlock(&rule->timeout_mutex); |
3601 | ||
7ee20df1 | 3602 | rule->table_id = table - ofproto->tables; |
3f517bcd DB |
3603 | rule->flags = fm->flags & OFPUTIL_FF_STATE; |
3604 | ||
f25d0cf3 BP |
3605 | rule->ofpacts = xmemdup(fm->ofpacts, fm->ofpacts_len); |
3606 | rule->ofpacts_len = fm->ofpacts_len; | |
9cae45dc JR |
3607 | rule->meter_id = find_meter(rule->ofpacts, rule->ofpacts_len); |
3608 | list_init(&rule->meter_list_node); | |
254750ce | 3609 | rule->eviction_group = NULL; |
e503cc19 | 3610 | list_init(&rule->expirable); |
2b07c8b1 BP |
3611 | rule->monitor_flags = 0; |
3612 | rule->add_seqno = 0; | |
3613 | rule->modify_seqno = 0; | |
884e1dc4 | 3614 | ovs_rwlock_init(&rule->rwlock); |
7ee20df1 | 3615 | |
8037acb4 | 3616 | /* Construct rule, initializing derived state. */ |
b277c7cc BP |
3617 | error = ofproto->ofproto_class->rule_construct(rule); |
3618 | if (error) { | |
8037acb4 BP |
3619 | ofproto_rule_destroy__(rule); |
3620 | return error; | |
064af421 | 3621 | } |
8037acb4 BP |
3622 | |
3623 | /* Insert rule. */ | |
3624 | oftable_insert_rule(rule); | |
3625 | ||
3626 | group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id); | |
3627 | ofoperation_create(group, rule, OFOPERATION_ADD, 0); | |
3628 | ofproto->ofproto_class->rule_insert(rule); | |
b277c7cc | 3629 | ofopgroup_submit(group); |
79eee1eb | 3630 | |
7ee20df1 | 3631 | return error; |
064af421 | 3632 | } |
79eee1eb BP |
3633 | \f |
3634 | /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */ | |
064af421 | 3635 | |
9ed18e46 BP |
3636 | /* Modifies the rules listed in 'rules', changing their actions to match those |
3637 | * in 'fm'. | |
79eee1eb | 3638 | * |
9ed18e46 BP |
3639 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, |
3640 | * if any. | |
3641 | * | |
3642 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 3643 | static enum ofperr |
7024dffe | 3644 | modify_flows__(struct ofproto *ofproto, struct ofconn *ofconn, |
e3b56933 | 3645 | struct ofputil_flow_mod *fm, const struct ofp_header *request, |
9cae45dc | 3646 | struct list *rules) |
79eee1eb | 3647 | { |
b277c7cc | 3648 | enum ofoperation_type type; |
7ee20df1 | 3649 | struct ofopgroup *group; |
9ed18e46 | 3650 | struct rule *rule; |
5c67e4af | 3651 | enum ofperr error; |
79eee1eb | 3652 | |
b277c7cc | 3653 | type = fm->command == OFPFC_ADD ? OFOPERATION_REPLACE : OFOPERATION_MODIFY; |
7024dffe | 3654 | group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id); |
5c67e4af | 3655 | error = OFPERR_OFPBRC_EPERM; |
9ed18e46 | 3656 | LIST_FOR_EACH (rule, ofproto_node, rules) { |
08043761 BP |
3657 | struct ofoperation *op; |
3658 | bool actions_changed; | |
b277c7cc | 3659 | bool reset_counters; |
08043761 | 3660 | |
0fb88c18 | 3661 | /* FIXME: Implement OFPFUTIL_FF_RESET_COUNTS */ |
2e1ae200 | 3662 | |
5c67e4af BP |
3663 | if (rule_is_modifiable(rule)) { |
3664 | /* At least one rule is modifiable, don't report EPERM error. */ | |
3665 | error = 0; | |
3666 | } else { | |
3667 | continue; | |
3668 | } | |
3669 | ||
e3b56933 JR |
3670 | /* Verify actions. */ |
3671 | error = ofpacts_check(fm->ofpacts, fm->ofpacts_len, &fm->match.flow, | |
430dbb14 | 3672 | u16_to_ofp(ofproto->max_ports), rule->table_id); |
e3b56933 JR |
3673 | if (error) { |
3674 | return error; | |
3675 | } | |
3676 | ||
08043761 BP |
3677 | actions_changed = !ofpacts_equal(fm->ofpacts, fm->ofpacts_len, |
3678 | rule->ofpacts, rule->ofpacts_len); | |
a7d94793 | 3679 | |
b277c7cc | 3680 | op = ofoperation_create(group, rule, type, 0); |
98eaac36 | 3681 | |
23342857 | 3682 | if (fm->modify_cookie && fm->new_cookie != htonll(UINT64_MAX)) { |
98eaac36 JR |
3683 | ofproto_rule_change_cookie(ofproto, rule, fm->new_cookie); |
3684 | } | |
b277c7cc BP |
3685 | if (type == OFOPERATION_REPLACE) { |
3686 | ovs_mutex_lock(&rule->timeout_mutex); | |
3687 | rule->idle_timeout = fm->idle_timeout; | |
3688 | rule->hard_timeout = fm->hard_timeout; | |
3689 | ovs_mutex_unlock(&rule->timeout_mutex); | |
3690 | ||
3f517bcd | 3691 | rule->flags = fm->flags & OFPUTIL_FF_STATE; |
b277c7cc BP |
3692 | if (fm->idle_timeout || fm->hard_timeout) { |
3693 | if (!rule->eviction_group) { | |
3694 | eviction_group_add_rule(rule); | |
3695 | } | |
3696 | } else { | |
3697 | eviction_group_remove_rule(rule); | |
3698 | } | |
3699 | } | |
3700 | ||
3701 | reset_counters = (fm->flags & OFPUTIL_FF_RESET_COUNTS) != 0; | |
3702 | if (actions_changed || reset_counters) { | |
a7d94793 BP |
3703 | op->ofpacts = rule->ofpacts; |
3704 | op->ofpacts_len = rule->ofpacts_len; | |
9cae45dc | 3705 | op->meter_id = rule->meter_id; |
884e1dc4 EJ |
3706 | |
3707 | ovs_rwlock_wrlock(&rule->rwlock); | |
f25d0cf3 BP |
3708 | rule->ofpacts = xmemdup(fm->ofpacts, fm->ofpacts_len); |
3709 | rule->ofpacts_len = fm->ofpacts_len; | |
884e1dc4 EJ |
3710 | ovs_rwlock_unlock(&rule->rwlock); |
3711 | ||
9cae45dc | 3712 | rule->meter_id = find_meter(rule->ofpacts, rule->ofpacts_len); |
b277c7cc BP |
3713 | rule->ofproto->ofproto_class->rule_modify_actions(rule, |
3714 | reset_counters); | |
308881af | 3715 | } else { |
08043761 | 3716 | ofoperation_complete(op, 0); |
623e1caf | 3717 | } |
5ecc9d81 | 3718 | } |
7ee20df1 | 3719 | ofopgroup_submit(group); |
79eee1eb | 3720 | |
5c67e4af | 3721 | return error; |
9ed18e46 BP |
3722 | } |
3723 | ||
9387b970 SH |
3724 | static enum ofperr |
3725 | modify_flows_add(struct ofproto *ofproto, struct ofconn *ofconn, | |
e3b56933 | 3726 | struct ofputil_flow_mod *fm, const struct ofp_header *request) |
9387b970 SH |
3727 | { |
3728 | if (fm->cookie_mask != htonll(0) || fm->new_cookie == htonll(UINT64_MAX)) { | |
3729 | return 0; | |
3730 | } | |
3731 | return add_flow(ofproto, ofconn, fm, request); | |
3732 | } | |
3733 | ||
90bf1e07 BP |
3734 | /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on |
3735 | * failure. | |
9ed18e46 BP |
3736 | * |
3737 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, | |
3738 | * if any. */ | |
90bf1e07 | 3739 | static enum ofperr |
7024dffe | 3740 | modify_flows_loose(struct ofproto *ofproto, struct ofconn *ofconn, |
e3b56933 | 3741 | struct ofputil_flow_mod *fm, |
7ee20df1 | 3742 | const struct ofp_header *request) |
9ed18e46 | 3743 | { |
a9b22b7f | 3744 | struct rule_criteria criteria; |
9ed18e46 BP |
3745 | struct list rules; |
3746 | int error; | |
3747 | ||
a9b22b7f BP |
3748 | rule_criteria_init(&criteria, fm->table_id, &fm->match, 0, |
3749 | fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG11_ANY); | |
3750 | error = collect_rules_loose(ofproto, &criteria, &rules); | |
3751 | rule_criteria_destroy(&criteria); | |
3752 | ||
623e1caf JP |
3753 | if (error) { |
3754 | return error; | |
3755 | } else if (list_is_empty(&rules)) { | |
9387b970 | 3756 | return modify_flows_add(ofproto, ofconn, fm, request); |
623e1caf JP |
3757 | } else { |
3758 | return modify_flows__(ofproto, ofconn, fm, request, &rules); | |
3759 | } | |
79eee1eb BP |
3760 | } |
3761 | ||
3762 | /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error | |
90bf1e07 | 3763 | * code on failure. |
79eee1eb | 3764 | * |
9ed18e46 | 3765 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, |
79eee1eb | 3766 | * if any. */ |
90bf1e07 | 3767 | static enum ofperr |
7024dffe | 3768 | modify_flow_strict(struct ofproto *ofproto, struct ofconn *ofconn, |
e3b56933 | 3769 | struct ofputil_flow_mod *fm, |
7ee20df1 | 3770 | const struct ofp_header *request) |
79eee1eb | 3771 | { |
a9b22b7f | 3772 | struct rule_criteria criteria; |
9ed18e46 | 3773 | struct list rules; |
6c1491fb BP |
3774 | int error; |
3775 | ||
a9b22b7f BP |
3776 | rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority, |
3777 | fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG11_ANY); | |
3778 | error = collect_rules_strict(ofproto, &criteria, &rules); | |
3779 | rule_criteria_destroy(&criteria); | |
3780 | ||
623e1caf JP |
3781 | if (error) { |
3782 | return error; | |
3783 | } else if (list_is_empty(&rules)) { | |
9387b970 | 3784 | return modify_flows_add(ofproto, ofconn, fm, request); |
623e1caf JP |
3785 | } else { |
3786 | return list_is_singleton(&rules) ? modify_flows__(ofproto, ofconn, | |
3787 | fm, request, &rules) | |
3788 | : 0; | |
3789 | } | |
79eee1eb | 3790 | } |
9ed18e46 BP |
3791 | \f |
3792 | /* OFPFC_DELETE implementation. */ | |
79eee1eb | 3793 | |
254750ce | 3794 | static void |
ca311b2f JR |
3795 | delete_flow__(struct rule *rule, struct ofopgroup *group, |
3796 | enum ofp_flow_removed_reason reason) | |
254750ce BP |
3797 | { |
3798 | struct ofproto *ofproto = rule->ofproto; | |
3799 | ||
ca311b2f | 3800 | ofproto_rule_send_removed(rule, reason); |
254750ce | 3801 | |
ca311b2f | 3802 | ofoperation_create(group, rule, OFOPERATION_DELETE, reason); |
254750ce | 3803 | oftable_remove_rule(rule); |
8037acb4 | 3804 | ofproto->ofproto_class->rule_delete(rule); |
254750ce BP |
3805 | } |
3806 | ||
9ed18e46 BP |
3807 | /* Deletes the rules listed in 'rules'. |
3808 | * | |
3809 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 3810 | static enum ofperr |
7024dffe | 3811 | delete_flows__(struct ofproto *ofproto, struct ofconn *ofconn, |
ca311b2f JR |
3812 | const struct ofp_header *request, struct list *rules, |
3813 | enum ofp_flow_removed_reason reason) | |
064af421 | 3814 | { |
9ed18e46 | 3815 | struct rule *rule, *next; |
7ee20df1 | 3816 | struct ofopgroup *group; |
79eee1eb | 3817 | |
7024dffe | 3818 | group = ofopgroup_create(ofproto, ofconn, request, UINT32_MAX); |
9ed18e46 | 3819 | LIST_FOR_EACH_SAFE (rule, next, ofproto_node, rules) { |
884e1dc4 | 3820 | ovs_rwlock_wrlock(&rule->rwlock); |
ca311b2f | 3821 | delete_flow__(rule, group, reason); |
79eee1eb | 3822 | } |
7ee20df1 | 3823 | ofopgroup_submit(group); |
79eee1eb | 3824 | |
9ed18e46 | 3825 | return 0; |
79eee1eb | 3826 | } |
79eee1eb BP |
3827 | |
3828 | /* Implements OFPFC_DELETE. */ | |
90bf1e07 | 3829 | static enum ofperr |
7024dffe BP |
3830 | delete_flows_loose(struct ofproto *ofproto, struct ofconn *ofconn, |
3831 | const struct ofputil_flow_mod *fm, | |
7ee20df1 | 3832 | const struct ofp_header *request) |
79eee1eb | 3833 | { |
a9b22b7f | 3834 | struct rule_criteria criteria; |
9ed18e46 | 3835 | struct list rules; |
90bf1e07 | 3836 | enum ofperr error; |
064af421 | 3837 | |
a9b22b7f BP |
3838 | rule_criteria_init(&criteria, fm->table_id, &fm->match, 0, |
3839 | fm->cookie, fm->cookie_mask, | |
3840 | fm->out_port, fm->out_group); | |
3841 | error = collect_rules_loose(ofproto, &criteria, &rules); | |
3842 | rule_criteria_destroy(&criteria); | |
3843 | ||
9ed18e46 | 3844 | return (error ? error |
7024dffe | 3845 | : !list_is_empty(&rules) ? delete_flows__(ofproto, ofconn, request, |
ca311b2f | 3846 | &rules, OFPRR_DELETE) |
9ed18e46 | 3847 | : 0); |
064af421 BP |
3848 | } |
3849 | ||
79eee1eb | 3850 | /* Implements OFPFC_DELETE_STRICT. */ |
90bf1e07 | 3851 | static enum ofperr |
7024dffe | 3852 | delete_flow_strict(struct ofproto *ofproto, struct ofconn *ofconn, |
1b9d6420 | 3853 | const struct ofputil_flow_mod *fm, |
7ee20df1 | 3854 | const struct ofp_header *request) |
79eee1eb | 3855 | { |
a9b22b7f | 3856 | struct rule_criteria criteria; |
9ed18e46 | 3857 | struct list rules; |
90bf1e07 | 3858 | enum ofperr error; |
79eee1eb | 3859 | |
a9b22b7f BP |
3860 | rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority, |
3861 | fm->cookie, fm->cookie_mask, | |
3862 | fm->out_port, fm->out_group); | |
3863 | error = collect_rules_strict(ofproto, &criteria, &rules); | |
3864 | rule_criteria_destroy(&criteria); | |
3865 | ||
9ed18e46 | 3866 | return (error ? error |
7024dffe | 3867 | : list_is_singleton(&rules) ? delete_flows__(ofproto, ofconn, |
ca311b2f JR |
3868 | request, &rules, |
3869 | OFPRR_DELETE) | |
9ed18e46 | 3870 | : 0); |
abe529af BP |
3871 | } |
3872 | ||
3873 | static void | |
3874 | ofproto_rule_send_removed(struct rule *rule, uint8_t reason) | |
3875 | { | |
3876 | struct ofputil_flow_removed fr; | |
3877 | ||
3f517bcd DB |
3878 | if (ofproto_rule_is_hidden(rule) || |
3879 | !(rule->flags & OFPUTIL_FF_SEND_FLOW_REM)) { | |
abe529af BP |
3880 | return; |
3881 | } | |
3882 | ||
5cb7a798 | 3883 | minimatch_expand(&rule->cr.match, &fr.match); |
81a76618 | 3884 | fr.priority = rule->cr.priority; |
abe529af BP |
3885 | fr.cookie = rule->flow_cookie; |
3886 | fr.reason = reason; | |
95216219 | 3887 | fr.table_id = rule->table_id; |
65e0be10 BP |
3888 | calc_duration(rule->created, time_msec(), |
3889 | &fr.duration_sec, &fr.duration_nsec); | |
a3779dbc | 3890 | ovs_mutex_lock(&rule->timeout_mutex); |
abe529af | 3891 | fr.idle_timeout = rule->idle_timeout; |
fa2bad0f | 3892 | fr.hard_timeout = rule->hard_timeout; |
a3779dbc | 3893 | ovs_mutex_unlock(&rule->timeout_mutex); |
abe529af BP |
3894 | rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count, |
3895 | &fr.byte_count); | |
3896 | ||
3897 | connmgr_send_flow_removed(rule->ofproto->connmgr, &fr); | |
3898 | } | |
3899 | ||
3900 | /* Sends an OpenFlow "flow removed" message with the given 'reason' (either | |
3901 | * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its | |
3902 | * ofproto. | |
3903 | * | |
e2a3d183 BP |
3904 | * 'rule' must not have a pending operation (that is, 'rule->pending' must be |
3905 | * NULL). | |
3906 | * | |
abe529af BP |
3907 | * ofproto implementation ->run() functions should use this function to expire |
3908 | * OpenFlow flows. */ | |
3909 | void | |
3910 | ofproto_rule_expire(struct rule *rule, uint8_t reason) | |
3911 | { | |
7ee20df1 | 3912 | struct ofproto *ofproto = rule->ofproto; |
8037acb4 | 3913 | struct classifier *cls = &ofproto->tables[rule->table_id].cls; |
7ee20df1 | 3914 | |
7395c052 NZ |
3915 | ovs_assert(reason == OFPRR_HARD_TIMEOUT || reason == OFPRR_IDLE_TIMEOUT |
3916 | || reason == OFPRR_DELETE || reason == OFPRR_GROUP_DELETE); | |
abe529af | 3917 | ofproto_rule_send_removed(rule, reason); |
7ee20df1 | 3918 | |
8037acb4 BP |
3919 | ovs_rwlock_wrlock(&cls->rwlock); |
3920 | ofproto_delete_rule(ofproto, cls, rule); | |
3921 | ovs_rwlock_unlock(&cls->rwlock); | |
79eee1eb | 3922 | } |
994c9973 BP |
3923 | |
3924 | /* Reduces '*timeout' to no more than 'max'. A value of zero in either case | |
3925 | * means "infinite". */ | |
3926 | static void | |
3927 | reduce_timeout(uint16_t max, uint16_t *timeout) | |
3928 | { | |
3929 | if (max && (!*timeout || *timeout > max)) { | |
3930 | *timeout = max; | |
3931 | } | |
3932 | } | |
3933 | ||
3934 | /* If 'idle_timeout' is nonzero, and 'rule' has no idle timeout or an idle | |
3935 | * timeout greater than 'idle_timeout', lowers 'rule''s idle timeout to | |
3936 | * 'idle_timeout' seconds. Similarly for 'hard_timeout'. | |
3937 | * | |
3938 | * Suitable for implementing OFPACT_FIN_TIMEOUT. */ | |
3939 | void | |
3940 | ofproto_rule_reduce_timeouts(struct rule *rule, | |
3941 | uint16_t idle_timeout, uint16_t hard_timeout) | |
3942 | OVS_EXCLUDED(rule->ofproto->expirable_mutex, rule->timeout_mutex) | |
3943 | { | |
3944 | if (!idle_timeout && !hard_timeout) { | |
3945 | return; | |
3946 | } | |
3947 | ||
3948 | ovs_mutex_lock(&rule->ofproto->expirable_mutex); | |
3949 | if (list_is_empty(&rule->expirable)) { | |
3950 | list_insert(&rule->ofproto->expirable, &rule->expirable); | |
3951 | } | |
3952 | ovs_mutex_unlock(&rule->ofproto->expirable_mutex); | |
3953 | ||
3954 | ovs_mutex_lock(&rule->timeout_mutex); | |
3955 | reduce_timeout(idle_timeout, &rule->idle_timeout); | |
3956 | reduce_timeout(hard_timeout, &rule->hard_timeout); | |
3957 | ovs_mutex_unlock(&rule->timeout_mutex); | |
994c9973 | 3958 | } |
79eee1eb | 3959 | \f |
90bf1e07 | 3960 | static enum ofperr |
2e4f5fcf | 3961 | handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3962 | { |
a5b8d268 | 3963 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
a9a2da38 | 3964 | struct ofputil_flow_mod fm; |
f25d0cf3 BP |
3965 | uint64_t ofpacts_stub[1024 / 8]; |
3966 | struct ofpbuf ofpacts; | |
90bf1e07 | 3967 | enum ofperr error; |
a5b8d268 | 3968 | long long int now; |
064af421 | 3969 | |
76589937 | 3970 | error = reject_slave_controller(ofconn); |
9deba63b | 3971 | if (error) { |
f25d0cf3 | 3972 | goto exit; |
9deba63b | 3973 | } |
3052b0c5 | 3974 | |
f25d0cf3 BP |
3975 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
3976 | error = ofputil_decode_flow_mod(&fm, oh, ofconn_get_protocol(ofconn), | |
3977 | &ofpacts); | |
548de4dd | 3978 | if (!error) { |
f1822532 | 3979 | error = handle_flow_mod__(ofproto, ofconn, &fm, oh); |
49bdc010 | 3980 | } |
a5b8d268 | 3981 | if (error) { |
f25d0cf3 | 3982 | goto exit_free_ofpacts; |
a5b8d268 | 3983 | } |
2e310801 | 3984 | |
a5b8d268 BP |
3985 | /* Record the operation for logging a summary report. */ |
3986 | switch (fm.command) { | |
3987 | case OFPFC_ADD: | |
3988 | ofproto->n_add++; | |
3989 | break; | |
3990 | ||
3991 | case OFPFC_MODIFY: | |
3992 | case OFPFC_MODIFY_STRICT: | |
3993 | ofproto->n_modify++; | |
3994 | break; | |
3995 | ||
3996 | case OFPFC_DELETE: | |
3997 | case OFPFC_DELETE_STRICT: | |
3998 | ofproto->n_delete++; | |
3999 | break; | |
4000 | } | |
4001 | ||
4002 | now = time_msec(); | |
4003 | if (ofproto->next_op_report == LLONG_MAX) { | |
4004 | ofproto->first_op = now; | |
4005 | ofproto->next_op_report = MAX(now + 10 * 1000, | |
4006 | ofproto->op_backoff); | |
4007 | ofproto->op_backoff = ofproto->next_op_report + 60 * 1000; | |
4008 | } | |
4009 | ofproto->last_op = now; | |
4010 | ||
f25d0cf3 BP |
4011 | exit_free_ofpacts: |
4012 | ofpbuf_uninit(&ofpacts); | |
4013 | exit: | |
4014 | return error; | |
75a75043 BP |
4015 | } |
4016 | ||
90bf1e07 | 4017 | static enum ofperr |
75a75043 | 4018 | handle_flow_mod__(struct ofproto *ofproto, struct ofconn *ofconn, |
e3b56933 | 4019 | struct ofputil_flow_mod *fm, const struct ofp_header *oh) |
75a75043 BP |
4020 | { |
4021 | if (ofproto->n_pending >= 50) { | |
cb22974d | 4022 | ovs_assert(!list_is_empty(&ofproto->pending)); |
75a75043 BP |
4023 | return OFPROTO_POSTPONE; |
4024 | } | |
4025 | ||
4026 | switch (fm->command) { | |
3052b0c5 | 4027 | case OFPFC_ADD: |
75a75043 | 4028 | return add_flow(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
4029 | |
4030 | case OFPFC_MODIFY: | |
75a75043 | 4031 | return modify_flows_loose(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
4032 | |
4033 | case OFPFC_MODIFY_STRICT: | |
75a75043 | 4034 | return modify_flow_strict(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
4035 | |
4036 | case OFPFC_DELETE: | |
75a75043 | 4037 | return delete_flows_loose(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
4038 | |
4039 | case OFPFC_DELETE_STRICT: | |
75a75043 | 4040 | return delete_flow_strict(ofproto, ofconn, fm, oh); |
3052b0c5 BP |
4041 | |
4042 | default: | |
75a75043 | 4043 | if (fm->command > 0xff) { |
fbfa2911 BP |
4044 | VLOG_WARN_RL(&rl, "%s: flow_mod has explicit table_id but " |
4045 | "flow_mod_table_id extension is not enabled", | |
4046 | ofproto->name); | |
6c1491fb | 4047 | } |
90bf1e07 | 4048 | return OFPERR_OFPFMFC_BAD_COMMAND; |
3052b0c5 BP |
4049 | } |
4050 | } | |
4051 | ||
90bf1e07 | 4052 | static enum ofperr |
d1e2cf21 | 4053 | handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh) |
9deba63b | 4054 | { |
f4f1ea7e BP |
4055 | struct ofputil_role_request request; |
4056 | struct ofputil_role_request reply; | |
9deba63b | 4057 | struct ofpbuf *buf; |
6ea4776b JR |
4058 | enum ofperr error; |
4059 | ||
f4f1ea7e | 4060 | error = ofputil_decode_role_message(oh, &request); |
6ea4776b JR |
4061 | if (error) { |
4062 | return error; | |
4063 | } | |
9deba63b | 4064 | |
f4f1ea7e BP |
4065 | if (request.role != OFPCR12_ROLE_NOCHANGE) { |
4066 | if (ofconn_get_role(ofconn) != request.role | |
4067 | && ofconn_has_pending_opgroups(ofconn)) { | |
4068 | return OFPROTO_POSTPONE; | |
4069 | } | |
7ee20df1 | 4070 | |
f4f1ea7e BP |
4071 | if (request.have_generation_id |
4072 | && !ofconn_set_master_election_id(ofconn, request.generation_id)) { | |
4073 | return OFPERR_OFPRRFC_STALE; | |
6ea4776b | 4074 | } |
6ea4776b | 4075 | |
f4f1ea7e BP |
4076 | ofconn_set_role(ofconn, request.role); |
4077 | } | |
9deba63b | 4078 | |
f4f1ea7e | 4079 | reply.role = ofconn_get_role(ofconn); |
147cc9d3 BP |
4080 | reply.have_generation_id = ofconn_get_master_election_id( |
4081 | ofconn, &reply.generation_id); | |
f4f1ea7e | 4082 | buf = ofputil_encode_role_reply(oh, &reply); |
b0421aa2 | 4083 | ofconn_send_reply(ofconn, buf); |
9deba63b BP |
4084 | |
4085 | return 0; | |
4086 | } | |
4087 | ||
90bf1e07 | 4088 | static enum ofperr |
6c1491fb BP |
4089 | handle_nxt_flow_mod_table_id(struct ofconn *ofconn, |
4090 | const struct ofp_header *oh) | |
4091 | { | |
982697a4 | 4092 | const struct nx_flow_mod_table_id *msg = ofpmsg_body(oh); |
27527aa0 BP |
4093 | enum ofputil_protocol cur, next; |
4094 | ||
4095 | cur = ofconn_get_protocol(ofconn); | |
4096 | next = ofputil_protocol_set_tid(cur, msg->set != 0); | |
4097 | ofconn_set_protocol(ofconn, next); | |
6c1491fb | 4098 | |
6c1491fb BP |
4099 | return 0; |
4100 | } | |
4101 | ||
90bf1e07 | 4102 | static enum ofperr |
d1e2cf21 | 4103 | handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh) |
09246b99 | 4104 | { |
982697a4 | 4105 | const struct nx_set_flow_format *msg = ofpmsg_body(oh); |
27527aa0 BP |
4106 | enum ofputil_protocol cur, next; |
4107 | enum ofputil_protocol next_base; | |
09246b99 | 4108 | |
27527aa0 BP |
4109 | next_base = ofputil_nx_flow_format_to_protocol(ntohl(msg->format)); |
4110 | if (!next_base) { | |
90bf1e07 | 4111 | return OFPERR_OFPBRC_EPERM; |
09246b99 | 4112 | } |
7ee20df1 | 4113 | |
27527aa0 BP |
4114 | cur = ofconn_get_protocol(ofconn); |
4115 | next = ofputil_protocol_set_base(cur, next_base); | |
4116 | if (cur != next && ofconn_has_pending_opgroups(ofconn)) { | |
4117 | /* Avoid sending async messages in surprising protocol. */ | |
7ee20df1 BP |
4118 | return OFPROTO_POSTPONE; |
4119 | } | |
4120 | ||
27527aa0 | 4121 | ofconn_set_protocol(ofconn, next); |
7ee20df1 | 4122 | return 0; |
09246b99 BP |
4123 | } |
4124 | ||
90bf1e07 | 4125 | static enum ofperr |
54834960 EJ |
4126 | handle_nxt_set_packet_in_format(struct ofconn *ofconn, |
4127 | const struct ofp_header *oh) | |
4128 | { | |
982697a4 | 4129 | const struct nx_set_packet_in_format *msg = ofpmsg_body(oh); |
54834960 EJ |
4130 | uint32_t format; |
4131 | ||
54834960 | 4132 | format = ntohl(msg->format); |
a15f0eeb | 4133 | if (format != NXPIF_OPENFLOW10 && format != NXPIF_NXM) { |
90bf1e07 | 4134 | return OFPERR_OFPBRC_EPERM; |
54834960 EJ |
4135 | } |
4136 | ||
4137 | if (format != ofconn_get_packet_in_format(ofconn) | |
4138 | && ofconn_has_pending_opgroups(ofconn)) { | |
4139 | /* Avoid sending async message in surprsing packet in format. */ | |
4140 | return OFPROTO_POSTPONE; | |
4141 | } | |
4142 | ||
4143 | ofconn_set_packet_in_format(ofconn, format); | |
4144 | return 0; | |
4145 | } | |
4146 | ||
80d5aefd BP |
4147 | static enum ofperr |
4148 | handle_nxt_set_async_config(struct ofconn *ofconn, const struct ofp_header *oh) | |
4149 | { | |
982697a4 | 4150 | const struct nx_async_config *msg = ofpmsg_body(oh); |
80d5aefd BP |
4151 | uint32_t master[OAM_N_TYPES]; |
4152 | uint32_t slave[OAM_N_TYPES]; | |
4153 | ||
4154 | master[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[0]); | |
4155 | master[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[0]); | |
4156 | master[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[0]); | |
4157 | ||
4158 | slave[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[1]); | |
4159 | slave[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[1]); | |
4160 | slave[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[1]); | |
4161 | ||
4162 | ofconn_set_async_config(ofconn, master, slave); | |
4550b647 MM |
4163 | if (ofconn_get_type(ofconn) == OFCONN_SERVICE && |
4164 | !ofconn_get_miss_send_len(ofconn)) { | |
4165 | ofconn_set_miss_send_len(ofconn, OFP_DEFAULT_MISS_SEND_LEN); | |
4166 | } | |
80d5aefd BP |
4167 | |
4168 | return 0; | |
4169 | } | |
4170 | ||
c423b3b3 AC |
4171 | static enum ofperr |
4172 | handle_nxt_get_async_request(struct ofconn *ofconn, const struct ofp_header *oh) | |
4173 | { | |
4174 | struct ofpbuf *buf; | |
4175 | uint32_t master[OAM_N_TYPES]; | |
4176 | uint32_t slave[OAM_N_TYPES]; | |
4177 | struct nx_async_config *msg; | |
4178 | ||
4179 | ofconn_get_async_config(ofconn, master, slave); | |
4180 | buf = ofpraw_alloc_reply(OFPRAW_OFPT13_GET_ASYNC_REPLY, oh, 0); | |
4181 | msg = ofpbuf_put_zeros(buf, sizeof *msg); | |
4182 | ||
4183 | msg->packet_in_mask[0] = htonl(master[OAM_PACKET_IN]); | |
4184 | msg->port_status_mask[0] = htonl(master[OAM_PORT_STATUS]); | |
4185 | msg->flow_removed_mask[0] = htonl(master[OAM_FLOW_REMOVED]); | |
4186 | ||
4187 | msg->packet_in_mask[1] = htonl(slave[OAM_PACKET_IN]); | |
4188 | msg->port_status_mask[1] = htonl(slave[OAM_PORT_STATUS]); | |
4189 | msg->flow_removed_mask[1] = htonl(slave[OAM_FLOW_REMOVED]); | |
4190 | ||
4191 | ofconn_send_reply(ofconn, buf); | |
4192 | ||
4193 | return 0; | |
4194 | } | |
4195 | ||
a7349929 BP |
4196 | static enum ofperr |
4197 | handle_nxt_set_controller_id(struct ofconn *ofconn, | |
4198 | const struct ofp_header *oh) | |
4199 | { | |
982697a4 | 4200 | const struct nx_controller_id *nci = ofpmsg_body(oh); |
a7349929 | 4201 | |
a7349929 BP |
4202 | if (!is_all_zeros(nci->zero, sizeof nci->zero)) { |
4203 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
4204 | } | |
4205 | ||
4206 | ofconn_set_controller_id(ofconn, ntohs(nci->controller_id)); | |
4207 | return 0; | |
4208 | } | |
4209 | ||
90bf1e07 | 4210 | static enum ofperr |
d1e2cf21 | 4211 | handle_barrier_request(struct ofconn *ofconn, const struct ofp_header *oh) |
246e61ea | 4212 | { |
246e61ea JP |
4213 | struct ofpbuf *buf; |
4214 | ||
7ee20df1 BP |
4215 | if (ofconn_has_pending_opgroups(ofconn)) { |
4216 | return OFPROTO_POSTPONE; | |
4217 | } | |
4218 | ||
982697a4 BP |
4219 | buf = ofpraw_alloc_reply((oh->version == OFP10_VERSION |
4220 | ? OFPRAW_OFPT10_BARRIER_REPLY | |
4221 | : OFPRAW_OFPT11_BARRIER_REPLY), oh, 0); | |
b0421aa2 | 4222 | ofconn_send_reply(ofconn, buf); |
246e61ea JP |
4223 | return 0; |
4224 | } | |
4225 | ||
2b07c8b1 BP |
4226 | static void |
4227 | ofproto_compose_flow_refresh_update(const struct rule *rule, | |
4228 | enum nx_flow_monitor_flags flags, | |
4229 | struct list *msgs) | |
4230 | { | |
4231 | struct ofoperation *op = rule->pending; | |
4232 | struct ofputil_flow_update fu; | |
5cb7a798 | 4233 | struct match match; |
2b07c8b1 | 4234 | |
b277c7cc | 4235 | if (op && op->type == OFOPERATION_ADD) { |
2b07c8b1 BP |
4236 | /* We'll report the final flow when the operation completes. Reporting |
4237 | * it now would cause a duplicate report later. */ | |
4238 | return; | |
4239 | } | |
4240 | ||
4241 | fu.event = (flags & (NXFMF_INITIAL | NXFMF_ADD) | |
4242 | ? NXFME_ADDED : NXFME_MODIFIED); | |
4243 | fu.reason = 0; | |
a3779dbc | 4244 | ovs_mutex_lock(&rule->timeout_mutex); |
2b07c8b1 BP |
4245 | fu.idle_timeout = rule->idle_timeout; |
4246 | fu.hard_timeout = rule->hard_timeout; | |
a3779dbc | 4247 | ovs_mutex_unlock(&rule->timeout_mutex); |
2b07c8b1 BP |
4248 | fu.table_id = rule->table_id; |
4249 | fu.cookie = rule->flow_cookie; | |
5cb7a798 BP |
4250 | minimatch_expand(&rule->cr.match, &match); |
4251 | fu.match = &match; | |
6b140a4e | 4252 | fu.priority = rule->cr.priority; |
2b07c8b1 BP |
4253 | if (!(flags & NXFMF_ACTIONS)) { |
4254 | fu.ofpacts = NULL; | |
4255 | fu.ofpacts_len = 0; | |
4256 | } else if (!op) { | |
4257 | fu.ofpacts = rule->ofpacts; | |
4258 | fu.ofpacts_len = rule->ofpacts_len; | |
4259 | } else { | |
4260 | /* An operation is in progress. Use the previous version of the flow's | |
4261 | * actions, so that when the operation commits we report the change. */ | |
4262 | switch (op->type) { | |
4263 | case OFOPERATION_ADD: | |
b277c7cc | 4264 | NOT_REACHED(); |
2b07c8b1 BP |
4265 | |
4266 | case OFOPERATION_MODIFY: | |
b277c7cc | 4267 | case OFOPERATION_REPLACE: |
2b07c8b1 BP |
4268 | if (op->ofpacts) { |
4269 | fu.ofpacts = op->ofpacts; | |
4270 | fu.ofpacts_len = op->ofpacts_len; | |
4271 | } else { | |
4272 | fu.ofpacts = rule->ofpacts; | |
4273 | fu.ofpacts_len = rule->ofpacts_len; | |
4274 | } | |
4275 | break; | |
4276 | ||
4277 | case OFOPERATION_DELETE: | |
4278 | fu.ofpacts = rule->ofpacts; | |
4279 | fu.ofpacts_len = rule->ofpacts_len; | |
4280 | break; | |
4281 | ||
4282 | default: | |
4283 | NOT_REACHED(); | |
4284 | } | |
4285 | } | |
4286 | ||
4287 | if (list_is_empty(msgs)) { | |
4288 | ofputil_start_flow_update(msgs); | |
4289 | } | |
4290 | ofputil_append_flow_update(&fu, msgs); | |
4291 | } | |
4292 | ||
4293 | void | |
4294 | ofmonitor_compose_refresh_updates(struct list *rules, struct list *msgs) | |
4295 | { | |
4296 | struct rule *rule; | |
4297 | ||
4298 | LIST_FOR_EACH (rule, ofproto_node, rules) { | |
4299 | enum nx_flow_monitor_flags flags = rule->monitor_flags; | |
4300 | rule->monitor_flags = 0; | |
4301 | ||
4302 | ofproto_compose_flow_refresh_update(rule, flags, msgs); | |
4303 | } | |
4304 | } | |
4305 | ||
4306 | static void | |
4307 | ofproto_collect_ofmonitor_refresh_rule(const struct ofmonitor *m, | |
4308 | struct rule *rule, uint64_t seqno, | |
4309 | struct list *rules) | |
4310 | { | |
4311 | enum nx_flow_monitor_flags update; | |
4312 | ||
4313 | if (ofproto_rule_is_hidden(rule)) { | |
4314 | return; | |
4315 | } | |
4316 | ||
4317 | if (!(rule->pending | |
4318 | ? ofoperation_has_out_port(rule->pending, m->out_port) | |
4319 | : ofproto_rule_has_out_port(rule, m->out_port))) { | |
4320 | return; | |
4321 | } | |
4322 | ||
4323 | if (seqno) { | |
4324 | if (rule->add_seqno > seqno) { | |
4325 | update = NXFMF_ADD | NXFMF_MODIFY; | |
4326 | } else if (rule->modify_seqno > seqno) { | |
4327 | update = NXFMF_MODIFY; | |
4328 | } else { | |
4329 | return; | |
4330 | } | |
4331 | ||
4332 | if (!(m->flags & update)) { | |
4333 | return; | |
4334 | } | |
4335 | } else { | |
4336 | update = NXFMF_INITIAL; | |
4337 | } | |
4338 | ||
4339 | if (!rule->monitor_flags) { | |
4340 | list_push_back(rules, &rule->ofproto_node); | |
4341 | } | |
4342 | rule->monitor_flags |= update | (m->flags & NXFMF_ACTIONS); | |
4343 | } | |
4344 | ||
4345 | static void | |
4346 | ofproto_collect_ofmonitor_refresh_rules(const struct ofmonitor *m, | |
4347 | uint64_t seqno, | |
4348 | struct list *rules) | |
4349 | { | |
4350 | const struct ofproto *ofproto = ofconn_get_ofproto(m->ofconn); | |
4351 | const struct ofoperation *op; | |
4352 | const struct oftable *table; | |
81a76618 | 4353 | struct cls_rule target; |
2b07c8b1 | 4354 | |
5cb7a798 | 4355 | cls_rule_init_from_minimatch(&target, &m->match, 0); |
2b07c8b1 BP |
4356 | FOR_EACH_MATCHING_TABLE (table, m->table_id, ofproto) { |
4357 | struct cls_cursor cursor; | |
4358 | struct rule *rule; | |
4359 | ||
0b4f2078 | 4360 | ovs_rwlock_rdlock(&table->cls.rwlock); |
81a76618 | 4361 | cls_cursor_init(&cursor, &table->cls, &target); |
2b07c8b1 | 4362 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
cb22974d | 4363 | ovs_assert(!rule->pending); /* XXX */ |
2b07c8b1 BP |
4364 | ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules); |
4365 | } | |
0b4f2078 | 4366 | ovs_rwlock_unlock(&table->cls.rwlock); |
2b07c8b1 BP |
4367 | } |
4368 | ||
4369 | HMAP_FOR_EACH (op, hmap_node, &ofproto->deletions) { | |
4370 | struct rule *rule = op->rule; | |
4371 | ||
4372 | if (((m->table_id == 0xff | |
4373 | ? !(ofproto->tables[rule->table_id].flags & OFTABLE_HIDDEN) | |
4374 | : m->table_id == rule->table_id)) | |
81a76618 | 4375 | && cls_rule_is_loose_match(&rule->cr, &target.match)) { |
2b07c8b1 BP |
4376 | ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules); |
4377 | } | |
4378 | } | |
48d28ac1 | 4379 | cls_rule_destroy(&target); |
2b07c8b1 BP |
4380 | } |
4381 | ||
4382 | static void | |
4383 | ofproto_collect_ofmonitor_initial_rules(struct ofmonitor *m, | |
4384 | struct list *rules) | |
4385 | { | |
4386 | if (m->flags & NXFMF_INITIAL) { | |
4387 | ofproto_collect_ofmonitor_refresh_rules(m, 0, rules); | |
4388 | } | |
4389 | } | |
4390 | ||
4391 | void | |
4392 | ofmonitor_collect_resume_rules(struct ofmonitor *m, | |
4393 | uint64_t seqno, struct list *rules) | |
4394 | { | |
4395 | ofproto_collect_ofmonitor_refresh_rules(m, seqno, rules); | |
4396 | } | |
4397 | ||
4398 | static enum ofperr | |
982697a4 | 4399 | handle_flow_monitor_request(struct ofconn *ofconn, const struct ofp_header *oh) |
2b07c8b1 BP |
4400 | { |
4401 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
4402 | struct ofmonitor **monitors; | |
4403 | size_t n_monitors, allocated_monitors; | |
4404 | struct list replies; | |
4405 | enum ofperr error; | |
4406 | struct list rules; | |
4407 | struct ofpbuf b; | |
4408 | size_t i; | |
4409 | ||
4410 | error = 0; | |
982697a4 | 4411 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
2b07c8b1 BP |
4412 | monitors = NULL; |
4413 | n_monitors = allocated_monitors = 0; | |
4414 | for (;;) { | |
4415 | struct ofputil_flow_monitor_request request; | |
4416 | struct ofmonitor *m; | |
4417 | int retval; | |
4418 | ||
4419 | retval = ofputil_decode_flow_monitor_request(&request, &b); | |
4420 | if (retval == EOF) { | |
4421 | break; | |
4422 | } else if (retval) { | |
4423 | error = retval; | |
4424 | goto error; | |
4425 | } | |
4426 | ||
4427 | if (request.table_id != 0xff | |
4428 | && request.table_id >= ofproto->n_tables) { | |
4429 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
4430 | goto error; | |
4431 | } | |
4432 | ||
4433 | error = ofmonitor_create(&request, ofconn, &m); | |
4434 | if (error) { | |
4435 | goto error; | |
4436 | } | |
4437 | ||
4438 | if (n_monitors >= allocated_monitors) { | |
4439 | monitors = x2nrealloc(monitors, &allocated_monitors, | |
4440 | sizeof *monitors); | |
4441 | } | |
4442 | monitors[n_monitors++] = m; | |
4443 | } | |
4444 | ||
4445 | list_init(&rules); | |
4446 | for (i = 0; i < n_monitors; i++) { | |
4447 | ofproto_collect_ofmonitor_initial_rules(monitors[i], &rules); | |
4448 | } | |
4449 | ||
982697a4 | 4450 | ofpmp_init(&replies, oh); |
2b07c8b1 BP |
4451 | ofmonitor_compose_refresh_updates(&rules, &replies); |
4452 | ofconn_send_replies(ofconn, &replies); | |
4453 | ||
4454 | free(monitors); | |
4455 | ||
4456 | return 0; | |
4457 | ||
4458 | error: | |
4459 | for (i = 0; i < n_monitors; i++) { | |
4460 | ofmonitor_destroy(monitors[i]); | |
4461 | } | |
4462 | free(monitors); | |
4463 | return error; | |
4464 | } | |
4465 | ||
4466 | static enum ofperr | |
4467 | handle_flow_monitor_cancel(struct ofconn *ofconn, const struct ofp_header *oh) | |
4468 | { | |
4469 | struct ofmonitor *m; | |
4470 | uint32_t id; | |
4471 | ||
4472 | id = ofputil_decode_flow_monitor_cancel(oh); | |
4473 | m = ofmonitor_lookup(ofconn, id); | |
4474 | if (!m) { | |
4475 | return OFPERR_NXBRC_FM_BAD_ID; | |
4476 | } | |
4477 | ||
4478 | ofmonitor_destroy(m); | |
4479 | return 0; | |
4480 | } | |
4481 | ||
9cae45dc JR |
4482 | /* Meters implementation. |
4483 | * | |
4484 | * Meter table entry, indexed by the OpenFlow meter_id. | |
4485 | * These are always dynamically allocated to allocate enough space for | |
4486 | * the bands. | |
4487 | * 'created' is used to compute the duration for meter stats. | |
4488 | * 'list rules' is needed so that we can delete the dependent rules when the | |
4489 | * meter table entry is deleted. | |
4490 | * 'provider_meter_id' is for the provider's private use. | |
4491 | */ | |
4492 | struct meter { | |
4493 | long long int created; /* Time created. */ | |
4494 | struct list rules; /* List of "struct rule_dpif"s. */ | |
4495 | ofproto_meter_id provider_meter_id; | |
4496 | uint16_t flags; /* Meter flags. */ | |
4497 | uint16_t n_bands; /* Number of meter bands. */ | |
4498 | struct ofputil_meter_band *bands; | |
4499 | }; | |
4500 | ||
4501 | /* | |
4502 | * This is used in instruction validation at flow set-up time, | |
4503 | * as flows may not use non-existing meters. | |
4504 | * This is also used by ofproto-providers to translate OpenFlow meter_ids | |
4505 | * in METER instructions to the corresponding provider meter IDs. | |
4506 | * Return value of UINT32_MAX signifies an invalid meter. | |
4507 | */ | |
4508 | uint32_t | |
4509 | ofproto_get_provider_meter_id(const struct ofproto * ofproto, | |
4510 | uint32_t of_meter_id) | |
4511 | { | |
4512 | if (of_meter_id && of_meter_id <= ofproto->meter_features.max_meters) { | |
4513 | const struct meter *meter = ofproto->meters[of_meter_id]; | |
4514 | if (meter) { | |
4515 | return meter->provider_meter_id.uint32; | |
4516 | } | |
4517 | } | |
4518 | return UINT32_MAX; | |
4519 | } | |
4520 | ||
4521 | static void | |
4522 | meter_update(struct meter *meter, const struct ofputil_meter_config *config) | |
4523 | { | |
4524 | free(meter->bands); | |
4525 | ||
4526 | meter->flags = config->flags; | |
4527 | meter->n_bands = config->n_bands; | |
4528 | meter->bands = xmemdup(config->bands, | |
4529 | config->n_bands * sizeof *meter->bands); | |
4530 | } | |
4531 | ||
4532 | static struct meter * | |
4533 | meter_create(const struct ofputil_meter_config *config, | |
4534 | ofproto_meter_id provider_meter_id) | |
4535 | { | |
4536 | struct meter *meter; | |
4537 | ||
4538 | meter = xzalloc(sizeof *meter); | |
4539 | meter->provider_meter_id = provider_meter_id; | |
4540 | meter->created = time_msec(); | |
4541 | list_init(&meter->rules); | |
4542 | ||
4543 | meter_update(meter, config); | |
4544 | ||
4545 | return meter; | |
4546 | } | |
4547 | ||
6b3f7f02 JR |
4548 | static void |
4549 | meter_delete(struct ofproto *ofproto, uint32_t first, uint32_t last) | |
4550 | { | |
4551 | uint32_t mid; | |
4552 | for (mid = first; mid <= last; ++mid) { | |
4553 | struct meter *meter = ofproto->meters[mid]; | |
4554 | if (meter) { | |
4555 | ofproto->meters[mid] = NULL; | |
4556 | ofproto->ofproto_class->meter_del(ofproto, | |
4557 | meter->provider_meter_id); | |
4558 | free(meter->bands); | |
4559 | free(meter); | |
4560 | } | |
4561 | } | |
4562 | } | |
4563 | ||
9cae45dc JR |
4564 | static enum ofperr |
4565 | handle_add_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm) | |
4566 | { | |
4567 | ofproto_meter_id provider_meter_id = { UINT32_MAX }; | |
4568 | struct meter **meterp = &ofproto->meters[mm->meter.meter_id]; | |
4569 | enum ofperr error; | |
4570 | ||
4571 | if (*meterp) { | |
4572 | return OFPERR_OFPMMFC_METER_EXISTS; | |
4573 | } | |
4574 | ||
4575 | error = ofproto->ofproto_class->meter_set(ofproto, &provider_meter_id, | |
4576 | &mm->meter); | |
4577 | if (!error) { | |
4578 | ovs_assert(provider_meter_id.uint32 != UINT32_MAX); | |
4579 | *meterp = meter_create(&mm->meter, provider_meter_id); | |
4580 | } | |
4581 | return 0; | |
4582 | } | |
4583 | ||
4584 | static enum ofperr | |
4585 | handle_modify_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm) | |
4586 | { | |
4587 | struct meter *meter = ofproto->meters[mm->meter.meter_id]; | |
4588 | enum ofperr error; | |
4589 | ||
4590 | if (!meter) { | |
4591 | return OFPERR_OFPMMFC_UNKNOWN_METER; | |
4592 | } | |
4593 | ||
4594 | error = ofproto->ofproto_class->meter_set(ofproto, | |
4595 | &meter->provider_meter_id, | |
4596 | &mm->meter); | |
4597 | ovs_assert(meter->provider_meter_id.uint32 != UINT32_MAX); | |
4598 | if (!error) { | |
4599 | meter_update(meter, &mm->meter); | |
4600 | } | |
4601 | return error; | |
4602 | } | |
4603 | ||
4604 | static enum ofperr | |
4605 | handle_delete_meter(struct ofconn *ofconn, const struct ofp_header *oh, | |
4606 | struct ofputil_meter_mod *mm) | |
4607 | { | |
4608 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
4609 | uint32_t meter_id = mm->meter.meter_id; | |
4610 | uint32_t first, last; | |
4611 | struct list rules; | |
4612 | ||
4613 | if (meter_id == OFPM13_ALL) { | |
4614 | first = 1; | |
4615 | last = ofproto->meter_features.max_meters; | |
4616 | } else { | |
4617 | if (!meter_id || meter_id > ofproto->meter_features.max_meters) { | |
4618 | return 0; | |
4619 | } | |
4620 | first = last = meter_id; | |
4621 | } | |
4622 | ||
4623 | /* First delete the rules that use this meter. If any of those rules are | |
4624 | * currently being modified, postpone the whole operation until later. */ | |
4625 | list_init(&rules); | |
4626 | for (meter_id = first; meter_id <= last; ++meter_id) { | |
4627 | struct meter *meter = ofproto->meters[meter_id]; | |
4628 | if (meter && !list_is_empty(&meter->rules)) { | |
4629 | struct rule *rule; | |
4630 | ||
4631 | LIST_FOR_EACH (rule, meter_list_node, &meter->rules) { | |
4632 | if (rule->pending) { | |
4633 | return OFPROTO_POSTPONE; | |
4634 | } | |
4635 | list_push_back(&rules, &rule->ofproto_node); | |
4636 | } | |
4637 | } | |
4638 | } | |
4639 | if (!list_is_empty(&rules)) { | |
4640 | delete_flows__(ofproto, ofconn, oh, &rules, OFPRR_METER_DELETE); | |
4641 | } | |
4642 | ||
4643 | /* Delete the meters. */ | |
6b3f7f02 | 4644 | meter_delete(ofproto, first, last); |
9cae45dc JR |
4645 | |
4646 | return 0; | |
4647 | } | |
4648 | ||
4649 | static enum ofperr | |
4650 | handle_meter_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
4651 | { | |
4652 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
4653 | struct ofputil_meter_mod mm; | |
4654 | uint64_t bands_stub[256 / 8]; | |
4655 | struct ofpbuf bands; | |
4656 | uint32_t meter_id; | |
4657 | enum ofperr error; | |
4658 | ||
4659 | error = reject_slave_controller(ofconn); | |
4660 | if (error) { | |
4661 | return error; | |
4662 | } | |
4663 | ||
4664 | ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub); | |
4665 | ||
4666 | error = ofputil_decode_meter_mod(oh, &mm, &bands); | |
4667 | if (error) { | |
4668 | goto exit_free_bands; | |
4669 | } | |
4670 | ||
4671 | meter_id = mm.meter.meter_id; | |
4672 | ||
4673 | if (mm.command != OFPMC13_DELETE) { | |
4674 | /* Fails also when meters are not implemented by the provider. */ | |
b31e8700 | 4675 | if (meter_id == 0 || meter_id > OFPM13_MAX) { |
9cae45dc JR |
4676 | error = OFPERR_OFPMMFC_INVALID_METER; |
4677 | goto exit_free_bands; | |
b31e8700 JR |
4678 | } else if (meter_id > ofproto->meter_features.max_meters) { |
4679 | error = OFPERR_OFPMMFC_OUT_OF_METERS; | |
4680 | goto exit_free_bands; | |
9cae45dc JR |
4681 | } |
4682 | if (mm.meter.n_bands > ofproto->meter_features.max_bands) { | |
4683 | error = OFPERR_OFPMMFC_OUT_OF_BANDS; | |
4684 | goto exit_free_bands; | |
4685 | } | |
4686 | } | |
4687 | ||
4688 | switch (mm.command) { | |
4689 | case OFPMC13_ADD: | |
4690 | error = handle_add_meter(ofproto, &mm); | |
4691 | break; | |
4692 | ||
4693 | case OFPMC13_MODIFY: | |
4694 | error = handle_modify_meter(ofproto, &mm); | |
4695 | break; | |
4696 | ||
4697 | case OFPMC13_DELETE: | |
4698 | error = handle_delete_meter(ofconn, oh, &mm); | |
4699 | break; | |
4700 | ||
4701 | default: | |
4702 | error = OFPERR_OFPMMFC_BAD_COMMAND; | |
4703 | break; | |
4704 | } | |
4705 | ||
4706 | exit_free_bands: | |
4707 | ofpbuf_uninit(&bands); | |
4708 | return error; | |
4709 | } | |
4710 | ||
4711 | static enum ofperr | |
4712 | handle_meter_features_request(struct ofconn *ofconn, | |
4713 | const struct ofp_header *request) | |
4714 | { | |
4715 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
4716 | struct ofputil_meter_features features; | |
4717 | struct ofpbuf *b; | |
4718 | ||
4719 | if (ofproto->ofproto_class->meter_get_features) { | |
4720 | ofproto->ofproto_class->meter_get_features(ofproto, &features); | |
4721 | } else { | |
4722 | memset(&features, 0, sizeof features); | |
4723 | } | |
4724 | b = ofputil_encode_meter_features_reply(&features, request); | |
4725 | ||
4726 | ofconn_send_reply(ofconn, b); | |
4727 | return 0; | |
4728 | } | |
4729 | ||
4730 | static enum ofperr | |
4731 | handle_meter_request(struct ofconn *ofconn, const struct ofp_header *request, | |
4732 | enum ofptype type) | |
4733 | { | |
4734 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
4735 | struct list replies; | |
4736 | uint64_t bands_stub[256 / 8]; | |
4737 | struct ofpbuf bands; | |
4738 | uint32_t meter_id, first, last; | |
4739 | ||
4740 | ofputil_decode_meter_request(request, &meter_id); | |
4741 | ||
4742 | if (meter_id == OFPM13_ALL) { | |
4743 | first = 1; | |
4744 | last = ofproto->meter_features.max_meters; | |
4745 | } else { | |
4746 | if (!meter_id || meter_id > ofproto->meter_features.max_meters || | |
4747 | !ofproto->meters[meter_id]) { | |
4748 | return OFPERR_OFPMMFC_UNKNOWN_METER; | |
4749 | } | |
4750 | first = last = meter_id; | |
4751 | } | |
4752 | ||
4753 | ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub); | |
4754 | ofpmp_init(&replies, request); | |
4755 | ||
4756 | for (meter_id = first; meter_id <= last; ++meter_id) { | |
4757 | struct meter *meter = ofproto->meters[meter_id]; | |
4758 | if (!meter) { | |
4759 | continue; /* Skip non-existing meters. */ | |
4760 | } | |
261bd854 | 4761 | if (type == OFPTYPE_METER_STATS_REQUEST) { |
9cae45dc JR |
4762 | struct ofputil_meter_stats stats; |
4763 | ||
4764 | stats.meter_id = meter_id; | |
4765 | ||
4766 | /* Provider sets the packet and byte counts, we do the rest. */ | |
4767 | stats.flow_count = list_size(&meter->rules); | |
4768 | calc_duration(meter->created, time_msec(), | |
4769 | &stats.duration_sec, &stats.duration_nsec); | |
4770 | stats.n_bands = meter->n_bands; | |
4771 | ofpbuf_clear(&bands); | |
4772 | stats.bands | |
4773 | = ofpbuf_put_uninit(&bands, | |
4774 | meter->n_bands * sizeof *stats.bands); | |
4775 | ||
4776 | if (!ofproto->ofproto_class->meter_get(ofproto, | |
4777 | meter->provider_meter_id, | |
4778 | &stats)) { | |
4779 | ofputil_append_meter_stats(&replies, &stats); | |
4780 | } | |
4781 | } else { /* type == OFPTYPE_METER_CONFIG_REQUEST */ | |
4782 | struct ofputil_meter_config config; | |
4783 | ||
4784 | config.meter_id = meter_id; | |
4785 | config.flags = meter->flags; | |
4786 | config.n_bands = meter->n_bands; | |
4787 | config.bands = meter->bands; | |
4788 | ofputil_append_meter_config(&replies, &config); | |
4789 | } | |
4790 | } | |
4791 | ||
4792 | ofconn_send_replies(ofconn, &replies); | |
4793 | ofpbuf_uninit(&bands); | |
4794 | return 0; | |
4795 | } | |
4796 | ||
7395c052 NZ |
4797 | bool |
4798 | ofproto_group_lookup(const struct ofproto *ofproto, uint32_t group_id, | |
4799 | struct ofgroup **group) | |
4800 | OVS_TRY_RDLOCK(true, (*group)->rwlock) | |
4801 | { | |
4802 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
4803 | HMAP_FOR_EACH_IN_BUCKET (*group, hmap_node, | |
4804 | hash_int(group_id, 0), &ofproto->groups) { | |
4805 | if ((*group)->group_id == group_id) { | |
4806 | ovs_rwlock_rdlock(&(*group)->rwlock); | |
4807 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
4808 | return true; | |
4809 | } | |
4810 | } | |
4811 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
4812 | return false; | |
4813 | } | |
4814 | ||
4815 | void | |
4816 | ofproto_group_release(struct ofgroup *group) | |
4817 | OVS_RELEASES(group->rwlock) | |
4818 | { | |
4819 | ovs_rwlock_unlock(&group->rwlock); | |
4820 | } | |
4821 | ||
4822 | static bool | |
4823 | ofproto_group_write_lookup(const struct ofproto *ofproto, uint32_t group_id, | |
4824 | struct ofgroup **group) | |
4825 | OVS_TRY_WRLOCK(true, ofproto->groups_rwlock) | |
4826 | OVS_TRY_WRLOCK(true, (*group)->rwlock) | |
4827 | { | |
4828 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
4829 | HMAP_FOR_EACH_IN_BUCKET (*group, hmap_node, | |
4830 | hash_int(group_id, 0), &ofproto->groups) { | |
4831 | if ((*group)->group_id == group_id) { | |
4832 | ovs_rwlock_wrlock(&(*group)->rwlock); | |
4833 | return true; | |
4834 | } | |
4835 | } | |
4836 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
4837 | return false; | |
4838 | } | |
4839 | ||
4840 | static bool | |
4841 | ofproto_group_exists(const struct ofproto *ofproto, uint32_t group_id) | |
4842 | OVS_REQ_RDLOCK(ofproto->groups_rwlock) | |
4843 | { | |
4844 | struct ofgroup *grp; | |
4845 | ||
4846 | HMAP_FOR_EACH_IN_BUCKET (grp, hmap_node, | |
4847 | hash_int(group_id, 0), &ofproto->groups) { | |
4848 | if (grp->group_id == group_id) { | |
4849 | return true; | |
4850 | } | |
4851 | } | |
4852 | return false; | |
4853 | } | |
4854 | ||
4855 | static void | |
4856 | append_group_stats(struct ofgroup *group, struct list *replies) | |
4857 | OVS_REQ_RDLOCK(group->rwlock) | |
4858 | { | |
4859 | struct ofputil_group_stats ogs; | |
4860 | struct ofproto *ofproto = group->ofproto; | |
4861 | long long int now = time_msec(); | |
4862 | int error; | |
4863 | ||
646b2a9c SH |
4864 | ogs.bucket_stats = xmalloc(group->n_buckets * sizeof *ogs.bucket_stats); |
4865 | ||
7395c052 NZ |
4866 | error = (ofproto->ofproto_class->group_get_stats |
4867 | ? ofproto->ofproto_class->group_get_stats(group, &ogs) | |
4868 | : EOPNOTSUPP); | |
4869 | if (error) { | |
4870 | ogs.ref_count = UINT32_MAX; | |
4871 | ogs.packet_count = UINT64_MAX; | |
4872 | ogs.byte_count = UINT64_MAX; | |
4873 | ogs.n_buckets = group->n_buckets; | |
4874 | memset(ogs.bucket_stats, 0xff, | |
4875 | ogs.n_buckets * sizeof *ogs.bucket_stats); | |
4876 | } | |
4877 | ||
4878 | ogs.group_id = group->group_id; | |
4879 | calc_duration(group->created, now, &ogs.duration_sec, &ogs.duration_nsec); | |
4880 | ||
4881 | ofputil_append_group_stats(replies, &ogs); | |
646b2a9c SH |
4882 | |
4883 | free(ogs.bucket_stats); | |
7395c052 NZ |
4884 | } |
4885 | ||
4886 | static enum ofperr | |
4887 | handle_group_stats_request(struct ofconn *ofconn, | |
4888 | const struct ofp_header *request) | |
4889 | { | |
4890 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
4891 | struct list replies; | |
4892 | enum ofperr error; | |
4893 | struct ofgroup *group; | |
4894 | uint32_t group_id; | |
4895 | ||
4896 | error = ofputil_decode_group_stats_request(request, &group_id); | |
4897 | if (error) { | |
4898 | return error; | |
4899 | } | |
4900 | ||
4901 | ofpmp_init(&replies, request); | |
4902 | ||
4903 | if (group_id == OFPG_ALL) { | |
4904 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
4905 | HMAP_FOR_EACH (group, hmap_node, &ofproto->groups) { | |
4906 | ovs_rwlock_rdlock(&group->rwlock); | |
4907 | append_group_stats(group, &replies); | |
4908 | ovs_rwlock_unlock(&group->rwlock); | |
4909 | } | |
4910 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
4911 | } else { | |
4912 | if (ofproto_group_lookup(ofproto, group_id, &group)) { | |
4913 | append_group_stats(group, &replies); | |
4914 | ofproto_group_release(group); | |
4915 | } | |
4916 | } | |
4917 | ||
4918 | ofconn_send_replies(ofconn, &replies); | |
4919 | ||
4920 | return 0; | |
4921 | } | |
4922 | ||
4923 | static enum ofperr | |
4924 | handle_group_desc_stats_request(struct ofconn *ofconn, | |
4925 | const struct ofp_header *request) | |
4926 | { | |
4927 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
4928 | struct list replies; | |
4929 | struct ofputil_group_desc gds; | |
4930 | struct ofgroup *group; | |
4931 | ||
4932 | ofpmp_init(&replies, request); | |
4933 | ||
4934 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
4935 | HMAP_FOR_EACH (group, hmap_node, &ofproto->groups) { | |
4936 | gds.group_id = group->group_id; | |
4937 | gds.type = group->type; | |
4938 | ofputil_append_group_desc_reply(&gds, &group->buckets, &replies); | |
4939 | } | |
4940 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
4941 | ||
4942 | ofconn_send_replies(ofconn, &replies); | |
4943 | ||
4944 | return 0; | |
4945 | } | |
4946 | ||
4947 | static enum ofperr | |
4948 | handle_group_features_stats_request(struct ofconn *ofconn, | |
4949 | const struct ofp_header *request) | |
4950 | { | |
4951 | struct ofproto *p = ofconn_get_ofproto(ofconn); | |
4952 | struct ofpbuf *msg; | |
4953 | ||
4954 | msg = ofputil_encode_group_features_reply(&p->ogf, request); | |
4955 | if (msg) { | |
4956 | ofconn_send_reply(ofconn, msg); | |
4957 | } | |
4958 | ||
4959 | return 0; | |
4960 | } | |
4961 | ||
4962 | /* Implements OFPGC11_ADD | |
4963 | * in which no matching flow already exists in the flow table. | |
4964 | * | |
4965 | * Adds the flow specified by 'ofm', which is followed by 'n_actions' | |
4966 | * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow | |
4967 | * error code on failure, or OFPROTO_POSTPONE if the operation cannot be | |
4968 | * initiated now but may be retried later. | |
4969 | * | |
4970 | * Upon successful return, takes ownership of 'fm->ofpacts'. On failure, | |
4971 | * ownership remains with the caller. | |
4972 | * | |
4973 | * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id, | |
4974 | * if any. */ | |
4975 | static enum ofperr | |
4976 | add_group(struct ofproto *ofproto, struct ofputil_group_mod *gm) | |
4977 | { | |
4978 | struct ofgroup *ofgroup; | |
4979 | enum ofperr error; | |
4980 | ||
4981 | if (gm->group_id > OFPG_MAX) { | |
4982 | return OFPERR_OFPGMFC_INVALID_GROUP; | |
4983 | } | |
4984 | if (gm->type > OFPGT11_FF) { | |
4985 | return OFPERR_OFPGMFC_BAD_TYPE; | |
4986 | } | |
4987 | ||
4988 | /* Allocate new group and initialize it. */ | |
4989 | ofgroup = ofproto->ofproto_class->group_alloc(); | |
4990 | if (!ofgroup) { | |
4991 | VLOG_WARN_RL(&rl, "%s: failed to create group", ofproto->name); | |
4992 | return OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
4993 | } | |
4994 | ||
4995 | ovs_rwlock_init(&ofgroup->rwlock); | |
4996 | ofgroup->ofproto = ofproto; | |
4997 | ofgroup->group_id = gm->group_id; | |
4998 | ofgroup->type = gm->type; | |
4999 | ofgroup->created = ofgroup->modified = time_msec(); | |
5000 | ||
5001 | list_move(&ofgroup->buckets, &gm->buckets); | |
5002 | ofgroup->n_buckets = list_size(&ofgroup->buckets); | |
5003 | ||
5004 | /* Construct called BEFORE any locks are held. */ | |
5005 | error = ofproto->ofproto_class->group_construct(ofgroup); | |
5006 | if (error) { | |
5007 | goto free_out; | |
5008 | } | |
5009 | ||
5010 | /* We wrlock as late as possible to minimize the time we jam any other | |
5011 | * threads: No visible state changes before acquiring the lock. */ | |
5012 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
5013 | ||
5014 | if (ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) { | |
5015 | error = OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
5016 | goto unlock_out; | |
5017 | } | |
5018 | ||
5019 | if (ofproto_group_exists(ofproto, gm->group_id)) { | |
5020 | error = OFPERR_OFPGMFC_GROUP_EXISTS; | |
5021 | goto unlock_out; | |
5022 | } | |
5023 | ||
5024 | if (!error) { | |
5025 | /* Insert new group. */ | |
5026 | hmap_insert(&ofproto->groups, &ofgroup->hmap_node, | |
5027 | hash_int(ofgroup->group_id, 0)); | |
5028 | ofproto->n_groups[ofgroup->type]++; | |
5029 | ||
5030 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5031 | return error; | |
5032 | } | |
5033 | ||
5034 | unlock_out: | |
5035 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5036 | ofproto->ofproto_class->group_destruct(ofgroup); | |
5037 | free_out: | |
5038 | ofputil_bucket_list_destroy(&ofgroup->buckets); | |
5039 | ofproto->ofproto_class->group_dealloc(ofgroup); | |
5040 | ||
5041 | return error; | |
5042 | } | |
5043 | ||
5044 | /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on | |
5045 | * failure. | |
5046 | * | |
5047 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, | |
5048 | * if any. */ | |
5049 | static enum ofperr | |
5050 | modify_group(struct ofproto *ofproto, struct ofputil_group_mod *gm) | |
5051 | { | |
5052 | struct ofgroup *ofgroup; | |
5053 | struct ofgroup *victim; | |
5054 | enum ofperr error; | |
5055 | ||
5056 | if (gm->group_id > OFPG_MAX) { | |
5057 | return OFPERR_OFPGMFC_INVALID_GROUP; | |
5058 | } | |
5059 | ||
5060 | if (gm->type > OFPGT11_FF) { | |
5061 | return OFPERR_OFPGMFC_BAD_TYPE; | |
5062 | } | |
5063 | ||
5064 | victim = ofproto->ofproto_class->group_alloc(); | |
5065 | if (!victim) { | |
5066 | VLOG_WARN_RL(&rl, "%s: failed to allocate group", ofproto->name); | |
5067 | return OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
5068 | } | |
5069 | ||
5070 | if (!ofproto_group_write_lookup(ofproto, gm->group_id, &ofgroup)) { | |
5071 | error = OFPERR_OFPGMFC_UNKNOWN_GROUP; | |
5072 | goto free_out; | |
5073 | } | |
5074 | /* Both group's and its container's write locks held now. | |
5075 | * Also, n_groups[] is protected by ofproto->groups_rwlock. */ | |
5076 | if (ofgroup->type != gm->type | |
5077 | && ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) { | |
5078 | error = OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
5079 | goto unlock_out; | |
5080 | } | |
5081 | ||
5082 | *victim = *ofgroup; | |
5083 | list_move(&victim->buckets, &ofgroup->buckets); | |
5084 | ||
5085 | ofgroup->type = gm->type; | |
5086 | list_move(&ofgroup->buckets, &gm->buckets); | |
5087 | ofgroup->n_buckets = list_size(&ofgroup->buckets); | |
5088 | ||
5089 | error = ofproto->ofproto_class->group_modify(ofgroup, victim); | |
5090 | if (!error) { | |
5091 | ofputil_bucket_list_destroy(&victim->buckets); | |
5092 | ofproto->n_groups[victim->type]--; | |
5093 | ofproto->n_groups[ofgroup->type]++; | |
5094 | ofgroup->modified = time_msec(); | |
5095 | } else { | |
5096 | ofputil_bucket_list_destroy(&ofgroup->buckets); | |
5097 | ||
5098 | *ofgroup = *victim; | |
5099 | list_move(&ofgroup->buckets, &victim->buckets); | |
5100 | } | |
5101 | ||
5102 | unlock_out: | |
5103 | ovs_rwlock_unlock(&ofgroup->rwlock); | |
5104 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5105 | free_out: | |
5106 | ofproto->ofproto_class->group_dealloc(victim); | |
5107 | return error; | |
5108 | } | |
5109 | ||
5110 | static void | |
5111 | delete_group__(struct ofproto *ofproto, struct ofgroup *ofgroup) | |
5112 | OVS_RELEASES(ofproto->groups_rwlock) | |
5113 | { | |
5114 | /* Must wait until existing readers are done, | |
5115 | * while holding the container's write lock at the same time. */ | |
5116 | ovs_rwlock_wrlock(&ofgroup->rwlock); | |
5117 | hmap_remove(&ofproto->groups, &ofgroup->hmap_node); | |
5118 | /* No-one can find this group any more. */ | |
5119 | ofproto->n_groups[ofgroup->type]--; | |
5120 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5121 | ||
5122 | ofproto->ofproto_class->group_destruct(ofgroup); | |
5123 | ofputil_bucket_list_destroy(&ofgroup->buckets); | |
5124 | ovs_rwlock_unlock(&ofgroup->rwlock); | |
5125 | ovs_rwlock_destroy(&ofgroup->rwlock); | |
5126 | ofproto->ofproto_class->group_dealloc(ofgroup); | |
5127 | } | |
5128 | ||
5129 | /* Implements OFPGC_DELETE. */ | |
5130 | static void | |
5131 | delete_group(struct ofproto *ofproto, uint32_t group_id) | |
5132 | { | |
5133 | struct ofgroup *ofgroup; | |
5134 | ||
5135 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
5136 | if (group_id == OFPG_ALL) { | |
5137 | for (;;) { | |
5138 | struct hmap_node *node = hmap_first(&ofproto->groups); | |
5139 | if (!node) { | |
5140 | break; | |
5141 | } | |
5142 | ofgroup = CONTAINER_OF(node, struct ofgroup, hmap_node); | |
5143 | delete_group__(ofproto, ofgroup); | |
5144 | /* Lock for each node separately, so that we will not jam the | |
5145 | * other threads for too long time. */ | |
5146 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
5147 | } | |
5148 | } else { | |
5149 | HMAP_FOR_EACH_IN_BUCKET (ofgroup, hmap_node, | |
5150 | hash_int(group_id, 0), &ofproto->groups) { | |
5151 | if (ofgroup->group_id == group_id) { | |
5152 | delete_group__(ofproto, ofgroup); | |
5153 | return; | |
5154 | } | |
5155 | } | |
5156 | } | |
5157 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5158 | } | |
5159 | ||
5160 | static enum ofperr | |
5161 | handle_group_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
5162 | { | |
5163 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5164 | struct ofputil_group_mod gm; | |
5165 | enum ofperr error; | |
5166 | ||
5167 | error = reject_slave_controller(ofconn); | |
5168 | if (error) { | |
5169 | return error; | |
5170 | } | |
5171 | ||
5172 | error = ofputil_decode_group_mod(oh, &gm); | |
5173 | if (error) { | |
5174 | return error; | |
5175 | } | |
5176 | ||
5177 | switch (gm.command) { | |
5178 | case OFPGC11_ADD: | |
5179 | return add_group(ofproto, &gm); | |
5180 | ||
5181 | case OFPGC11_MODIFY: | |
5182 | return modify_group(ofproto, &gm); | |
5183 | ||
5184 | case OFPGC11_DELETE: | |
5185 | delete_group(ofproto, gm.group_id); | |
5186 | return 0; | |
5187 | ||
5188 | default: | |
5189 | if (gm.command > OFPGC11_DELETE) { | |
5190 | VLOG_WARN_RL(&rl, "%s: Invalid group_mod command type %d", | |
5191 | ofproto->name, gm.command); | |
5192 | } | |
5193 | return OFPERR_OFPGMFC_BAD_COMMAND; | |
5194 | } | |
5195 | } | |
5196 | ||
918f2b82 AZ |
5197 | static enum ofperr |
5198 | handle_table_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
5199 | { | |
5200 | struct ofputil_table_mod tm; | |
5201 | enum ofperr error; | |
5202 | ||
5203 | error = reject_slave_controller(ofconn); | |
5204 | if (error) { | |
5205 | return error; | |
5206 | } | |
5207 | ||
5208 | error = ofputil_decode_table_mod(oh, &tm); | |
5209 | if (error) { | |
5210 | return error; | |
5211 | } | |
5212 | ||
5213 | /* XXX Actual table mod support is not implemented yet. */ | |
5214 | return 0; | |
5215 | } | |
5216 | ||
90bf1e07 | 5217 | static enum ofperr |
d1e2cf21 | 5218 | handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg) |
064af421 | 5219 | { |
d1e2cf21 | 5220 | const struct ofp_header *oh = msg->data; |
982697a4 | 5221 | enum ofptype type; |
90bf1e07 | 5222 | enum ofperr error; |
064af421 | 5223 | |
982697a4 | 5224 | error = ofptype_decode(&type, oh); |
d1e2cf21 BP |
5225 | if (error) { |
5226 | return error; | |
5227 | } | |
064af421 | 5228 | |
982697a4 | 5229 | switch (type) { |
d1e2cf21 | 5230 | /* OpenFlow requests. */ |
982697a4 | 5231 | case OFPTYPE_ECHO_REQUEST: |
d1e2cf21 | 5232 | return handle_echo_request(ofconn, oh); |
064af421 | 5233 | |
982697a4 | 5234 | case OFPTYPE_FEATURES_REQUEST: |
d1e2cf21 | 5235 | return handle_features_request(ofconn, oh); |
064af421 | 5236 | |
982697a4 | 5237 | case OFPTYPE_GET_CONFIG_REQUEST: |
d1e2cf21 | 5238 | return handle_get_config_request(ofconn, oh); |
064af421 | 5239 | |
982697a4 BP |
5240 | case OFPTYPE_SET_CONFIG: |
5241 | return handle_set_config(ofconn, oh); | |
064af421 | 5242 | |
982697a4 BP |
5243 | case OFPTYPE_PACKET_OUT: |
5244 | return handle_packet_out(ofconn, oh); | |
064af421 | 5245 | |
982697a4 | 5246 | case OFPTYPE_PORT_MOD: |
d1e2cf21 | 5247 | return handle_port_mod(ofconn, oh); |
064af421 | 5248 | |
982697a4 | 5249 | case OFPTYPE_FLOW_MOD: |
2e4f5fcf | 5250 | return handle_flow_mod(ofconn, oh); |
064af421 | 5251 | |
7395c052 NZ |
5252 | case OFPTYPE_GROUP_MOD: |
5253 | return handle_group_mod(ofconn, oh); | |
5254 | ||
918f2b82 AZ |
5255 | case OFPTYPE_TABLE_MOD: |
5256 | return handle_table_mod(ofconn, oh); | |
5257 | ||
9cae45dc JR |
5258 | case OFPTYPE_METER_MOD: |
5259 | return handle_meter_mod(ofconn, oh); | |
5260 | ||
982697a4 | 5261 | case OFPTYPE_BARRIER_REQUEST: |
d1e2cf21 | 5262 | return handle_barrier_request(ofconn, oh); |
064af421 | 5263 | |
6ea4776b JR |
5264 | case OFPTYPE_ROLE_REQUEST: |
5265 | return handle_role_request(ofconn, oh); | |
5266 | ||
d1e2cf21 | 5267 | /* OpenFlow replies. */ |
982697a4 | 5268 | case OFPTYPE_ECHO_REPLY: |
d1e2cf21 | 5269 | return 0; |
246e61ea | 5270 | |
d1e2cf21 | 5271 | /* Nicira extension requests. */ |
982697a4 | 5272 | case OFPTYPE_FLOW_MOD_TABLE_ID: |
6c1491fb | 5273 | return handle_nxt_flow_mod_table_id(ofconn, oh); |
d1e2cf21 | 5274 | |
982697a4 | 5275 | case OFPTYPE_SET_FLOW_FORMAT: |
d1e2cf21 BP |
5276 | return handle_nxt_set_flow_format(ofconn, oh); |
5277 | ||
982697a4 | 5278 | case OFPTYPE_SET_PACKET_IN_FORMAT: |
54834960 EJ |
5279 | return handle_nxt_set_packet_in_format(ofconn, oh); |
5280 | ||
982697a4 | 5281 | case OFPTYPE_SET_CONTROLLER_ID: |
a7349929 BP |
5282 | return handle_nxt_set_controller_id(ofconn, oh); |
5283 | ||
982697a4 | 5284 | case OFPTYPE_FLOW_AGE: |
f27f2134 BP |
5285 | /* Nothing to do. */ |
5286 | return 0; | |
5287 | ||
982697a4 | 5288 | case OFPTYPE_FLOW_MONITOR_CANCEL: |
2b07c8b1 BP |
5289 | return handle_flow_monitor_cancel(ofconn, oh); |
5290 | ||
982697a4 | 5291 | case OFPTYPE_SET_ASYNC_CONFIG: |
80d5aefd BP |
5292 | return handle_nxt_set_async_config(ofconn, oh); |
5293 | ||
c423b3b3 AC |
5294 | case OFPTYPE_GET_ASYNC_REQUEST: |
5295 | return handle_nxt_get_async_request(ofconn, oh); | |
5296 | ||
349adfb2 | 5297 | /* Statistics requests. */ |
982697a4 BP |
5298 | case OFPTYPE_DESC_STATS_REQUEST: |
5299 | return handle_desc_stats_request(ofconn, oh); | |
5300 | ||
5301 | case OFPTYPE_FLOW_STATS_REQUEST: | |
5302 | return handle_flow_stats_request(ofconn, oh); | |
5303 | ||
5304 | case OFPTYPE_AGGREGATE_STATS_REQUEST: | |
5305 | return handle_aggregate_stats_request(ofconn, oh); | |
5306 | ||
5307 | case OFPTYPE_TABLE_STATS_REQUEST: | |
5308 | return handle_table_stats_request(ofconn, oh); | |
5309 | ||
5310 | case OFPTYPE_PORT_STATS_REQUEST: | |
5311 | return handle_port_stats_request(ofconn, oh); | |
5312 | ||
5313 | case OFPTYPE_QUEUE_STATS_REQUEST: | |
5314 | return handle_queue_stats_request(ofconn, oh); | |
5315 | ||
5316 | case OFPTYPE_PORT_DESC_STATS_REQUEST: | |
5317 | return handle_port_desc_stats_request(ofconn, oh); | |
5318 | ||
5319 | case OFPTYPE_FLOW_MONITOR_STATS_REQUEST: | |
5320 | return handle_flow_monitor_request(ofconn, oh); | |
5321 | ||
261bd854 BP |
5322 | case OFPTYPE_METER_STATS_REQUEST: |
5323 | case OFPTYPE_METER_CONFIG_STATS_REQUEST: | |
9cae45dc JR |
5324 | return handle_meter_request(ofconn, oh, type); |
5325 | ||
261bd854 | 5326 | case OFPTYPE_METER_FEATURES_STATS_REQUEST: |
9cae45dc JR |
5327 | return handle_meter_features_request(ofconn, oh); |
5328 | ||
261bd854 | 5329 | case OFPTYPE_GROUP_STATS_REQUEST: |
7395c052 NZ |
5330 | return handle_group_stats_request(ofconn, oh); |
5331 | ||
261bd854 | 5332 | case OFPTYPE_GROUP_DESC_STATS_REQUEST: |
7395c052 NZ |
5333 | return handle_group_desc_stats_request(ofconn, oh); |
5334 | ||
261bd854 | 5335 | case OFPTYPE_GROUP_FEATURES_STATS_REQUEST: |
7395c052 NZ |
5336 | return handle_group_features_stats_request(ofconn, oh); |
5337 | ||
5338 | /* FIXME: Change the following once they are implemented: */ | |
5339 | case OFPTYPE_QUEUE_GET_CONFIG_REQUEST: | |
261bd854 | 5340 | case OFPTYPE_TABLE_FEATURES_STATS_REQUEST: |
2e1ae200 JR |
5341 | return OFPERR_OFPBRC_BAD_TYPE; |
5342 | ||
982697a4 BP |
5343 | case OFPTYPE_HELLO: |
5344 | case OFPTYPE_ERROR: | |
5345 | case OFPTYPE_FEATURES_REPLY: | |
5346 | case OFPTYPE_GET_CONFIG_REPLY: | |
5347 | case OFPTYPE_PACKET_IN: | |
5348 | case OFPTYPE_FLOW_REMOVED: | |
5349 | case OFPTYPE_PORT_STATUS: | |
5350 | case OFPTYPE_BARRIER_REPLY: | |
c545d38d | 5351 | case OFPTYPE_QUEUE_GET_CONFIG_REPLY: |
982697a4 BP |
5352 | case OFPTYPE_DESC_STATS_REPLY: |
5353 | case OFPTYPE_FLOW_STATS_REPLY: | |
5354 | case OFPTYPE_QUEUE_STATS_REPLY: | |
5355 | case OFPTYPE_PORT_STATS_REPLY: | |
5356 | case OFPTYPE_TABLE_STATS_REPLY: | |
5357 | case OFPTYPE_AGGREGATE_STATS_REPLY: | |
5358 | case OFPTYPE_PORT_DESC_STATS_REPLY: | |
5359 | case OFPTYPE_ROLE_REPLY: | |
5360 | case OFPTYPE_FLOW_MONITOR_PAUSED: | |
5361 | case OFPTYPE_FLOW_MONITOR_RESUMED: | |
5362 | case OFPTYPE_FLOW_MONITOR_STATS_REPLY: | |
2e1ae200 | 5363 | case OFPTYPE_GET_ASYNC_REPLY: |
261bd854 BP |
5364 | case OFPTYPE_GROUP_STATS_REPLY: |
5365 | case OFPTYPE_GROUP_DESC_STATS_REPLY: | |
5366 | case OFPTYPE_GROUP_FEATURES_STATS_REPLY: | |
5367 | case OFPTYPE_METER_STATS_REPLY: | |
5368 | case OFPTYPE_METER_CONFIG_STATS_REPLY: | |
5369 | case OFPTYPE_METER_FEATURES_STATS_REPLY: | |
5370 | case OFPTYPE_TABLE_FEATURES_STATS_REPLY: | |
064af421 | 5371 | default: |
982697a4 | 5372 | return OFPERR_OFPBRC_BAD_TYPE; |
064af421 | 5373 | } |
d1e2cf21 | 5374 | } |
064af421 | 5375 | |
7ee20df1 | 5376 | static bool |
e03248b7 | 5377 | handle_openflow(struct ofconn *ofconn, const struct ofpbuf *ofp_msg) |
d1e2cf21 BP |
5378 | { |
5379 | int error = handle_openflow__(ofconn, ofp_msg); | |
7ee20df1 | 5380 | if (error && error != OFPROTO_POSTPONE) { |
1be5ff75 | 5381 | ofconn_send_error(ofconn, ofp_msg->data, error); |
064af421 | 5382 | } |
d1e2cf21 | 5383 | COVERAGE_INC(ofproto_recv_openflow); |
7ee20df1 BP |
5384 | return error != OFPROTO_POSTPONE; |
5385 | } | |
5386 | \f | |
5387 | /* Asynchronous operations. */ | |
5388 | ||
5389 | /* Creates and returns a new ofopgroup that is not associated with any | |
5390 | * OpenFlow connection. | |
5391 | * | |
5392 | * The caller should add operations to the returned group with | |
5393 | * ofoperation_create() and then submit it with ofopgroup_submit(). */ | |
5394 | static struct ofopgroup * | |
7024dffe | 5395 | ofopgroup_create_unattached(struct ofproto *ofproto) |
7ee20df1 BP |
5396 | { |
5397 | struct ofopgroup *group = xzalloc(sizeof *group); | |
5398 | group->ofproto = ofproto; | |
5399 | list_init(&group->ofproto_node); | |
5400 | list_init(&group->ops); | |
5401 | list_init(&group->ofconn_node); | |
5402 | return group; | |
5403 | } | |
5404 | ||
7024dffe BP |
5405 | /* Creates and returns a new ofopgroup for 'ofproto'. |
5406 | * | |
5407 | * If 'ofconn' is NULL, the new ofopgroup is not associated with any OpenFlow | |
5408 | * connection. The 'request' and 'buffer_id' arguments are ignored. | |
5409 | * | |
5410 | * If 'ofconn' is nonnull, then the new ofopgroup is associated with 'ofconn'. | |
5411 | * If the ofopgroup eventually fails, then the error reply will include | |
5412 | * 'request'. If the ofopgroup eventually succeeds, then the packet with | |
5413 | * buffer id 'buffer_id' on 'ofconn' will be sent by 'ofconn''s ofproto. | |
7ee20df1 BP |
5414 | * |
5415 | * The caller should add operations to the returned group with | |
5416 | * ofoperation_create() and then submit it with ofopgroup_submit(). */ | |
5417 | static struct ofopgroup * | |
7024dffe BP |
5418 | ofopgroup_create(struct ofproto *ofproto, struct ofconn *ofconn, |
5419 | const struct ofp_header *request, uint32_t buffer_id) | |
7ee20df1 | 5420 | { |
7024dffe BP |
5421 | struct ofopgroup *group = ofopgroup_create_unattached(ofproto); |
5422 | if (ofconn) { | |
5423 | size_t request_len = ntohs(request->length); | |
7ee20df1 | 5424 | |
cb22974d | 5425 | ovs_assert(ofconn_get_ofproto(ofconn) == ofproto); |
7ee20df1 | 5426 | |
7024dffe BP |
5427 | ofconn_add_opgroup(ofconn, &group->ofconn_node); |
5428 | group->ofconn = ofconn; | |
5429 | group->request = xmemdup(request, MIN(request_len, 64)); | |
5430 | group->buffer_id = buffer_id; | |
5431 | } | |
7ee20df1 BP |
5432 | return group; |
5433 | } | |
5434 | ||
5435 | /* Submits 'group' for processing. | |
5436 | * | |
5437 | * If 'group' contains no operations (e.g. none were ever added, or all of the | |
5438 | * ones that were added completed synchronously), then it is destroyed | |
5439 | * immediately. Otherwise it is added to the ofproto's list of pending | |
5440 | * groups. */ | |
5441 | static void | |
5442 | ofopgroup_submit(struct ofopgroup *group) | |
5443 | { | |
e615b0a3 BP |
5444 | if (!group->n_running) { |
5445 | ofopgroup_complete(group); | |
7ee20df1 BP |
5446 | } else { |
5447 | list_push_back(&group->ofproto->pending, &group->ofproto_node); | |
dd5616b3 | 5448 | group->ofproto->n_pending++; |
7ee20df1 BP |
5449 | } |
5450 | } | |
5451 | ||
5452 | static void | |
e615b0a3 | 5453 | ofopgroup_complete(struct ofopgroup *group) |
7ee20df1 | 5454 | { |
e615b0a3 | 5455 | struct ofproto *ofproto = group->ofproto; |
2b07c8b1 BP |
5456 | |
5457 | struct ofconn *abbrev_ofconn; | |
5458 | ovs_be32 abbrev_xid; | |
5459 | ||
e615b0a3 BP |
5460 | struct ofoperation *op, *next_op; |
5461 | int error; | |
5462 | ||
cb22974d | 5463 | ovs_assert(!group->n_running); |
e615b0a3 BP |
5464 | |
5465 | error = 0; | |
5466 | LIST_FOR_EACH (op, group_node, &group->ops) { | |
5467 | if (op->error) { | |
5468 | error = op->error; | |
5469 | break; | |
5470 | } | |
5471 | } | |
5472 | ||
5473 | if (!error && group->ofconn && group->buffer_id != UINT32_MAX) { | |
5474 | LIST_FOR_EACH (op, group_node, &group->ops) { | |
5475 | if (op->type != OFOPERATION_DELETE) { | |
5476 | struct ofpbuf *packet; | |
4e022ec0 | 5477 | ofp_port_t in_port; |
e615b0a3 BP |
5478 | |
5479 | error = ofconn_pktbuf_retrieve(group->ofconn, group->buffer_id, | |
5480 | &packet, &in_port); | |
5481 | if (packet) { | |
cb22974d | 5482 | ovs_assert(!error); |
e615b0a3 BP |
5483 | error = rule_execute(op->rule, in_port, packet); |
5484 | } | |
5485 | break; | |
5486 | } | |
5487 | } | |
5488 | } | |
5489 | ||
2b07c8b1 BP |
5490 | if (!error && !list_is_empty(&group->ofconn_node)) { |
5491 | abbrev_ofconn = group->ofconn; | |
5492 | abbrev_xid = group->request->xid; | |
5493 | } else { | |
5494 | abbrev_ofconn = NULL; | |
5495 | abbrev_xid = htonl(0); | |
5496 | } | |
e615b0a3 BP |
5497 | LIST_FOR_EACH_SAFE (op, next_op, group_node, &group->ops) { |
5498 | struct rule *rule = op->rule; | |
2b07c8b1 | 5499 | |
644e2a7c BP |
5500 | /* We generally want to report the change to active OpenFlow flow |
5501 | monitors (e.g. NXST_FLOW_MONITOR). There are three exceptions: | |
5502 | ||
5503 | - The operation failed. | |
5504 | ||
5505 | - The affected rule is not visible to controllers. | |
5506 | ||
5507 | - The operation's only effect was to update rule->modified. */ | |
5508 | if (!(op->error | |
5509 | || ofproto_rule_is_hidden(rule) | |
5510 | || (op->type == OFOPERATION_MODIFY | |
5511 | && op->ofpacts | |
5512 | && rule->flow_cookie == op->flow_cookie))) { | |
2b07c8b1 BP |
5513 | /* Check that we can just cast from ofoperation_type to |
5514 | * nx_flow_update_event. */ | |
b277c7cc BP |
5515 | enum nx_flow_update_event event_type; |
5516 | ||
5517 | switch (op->type) { | |
5518 | case OFOPERATION_ADD: | |
5519 | case OFOPERATION_REPLACE: | |
5520 | event_type = NXFME_ADDED; | |
5521 | break; | |
5522 | ||
5523 | case OFOPERATION_DELETE: | |
5524 | event_type = NXFME_DELETED; | |
5525 | break; | |
5526 | ||
5527 | case OFOPERATION_MODIFY: | |
5528 | event_type = NXFME_MODIFIED; | |
5529 | break; | |
5530 | ||
5531 | default: | |
5532 | NOT_REACHED(); | |
5533 | } | |
5534 | ||
5535 | ofmonitor_report(ofproto->connmgr, rule, event_type, | |
2b07c8b1 BP |
5536 | op->reason, abbrev_ofconn, abbrev_xid); |
5537 | } | |
5538 | ||
e615b0a3 BP |
5539 | rule->pending = NULL; |
5540 | ||
5541 | switch (op->type) { | |
5542 | case OFOPERATION_ADD: | |
5543 | if (!op->error) { | |
5cb7a798 BP |
5544 | uint16_t vid_mask; |
5545 | ||
5cb7a798 BP |
5546 | vid_mask = minimask_get_vid_mask(&rule->cr.match.mask); |
5547 | if (vid_mask == VLAN_VID_MASK) { | |
e615b0a3 | 5548 | if (ofproto->vlan_bitmap) { |
5cb7a798 | 5549 | uint16_t vid = miniflow_get_vid(&rule->cr.match.flow); |
e615b0a3 BP |
5550 | if (!bitmap_is_set(ofproto->vlan_bitmap, vid)) { |
5551 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
5552 | ofproto->vlans_changed = true; | |
5553 | } | |
5554 | } else { | |
5555 | ofproto->vlans_changed = true; | |
5556 | } | |
5557 | } | |
5558 | } else { | |
884e1dc4 | 5559 | ovs_rwlock_wrlock(&rule->rwlock); |
b277c7cc | 5560 | oftable_remove_rule(rule); |
392caac0 | 5561 | ofproto_rule_destroy(rule); |
e615b0a3 BP |
5562 | } |
5563 | break; | |
5564 | ||
5565 | case OFOPERATION_DELETE: | |
cb22974d | 5566 | ovs_assert(!op->error); |
392caac0 | 5567 | ofproto_rule_destroy(rule); |
e615b0a3 BP |
5568 | op->rule = NULL; |
5569 | break; | |
5570 | ||
5571 | case OFOPERATION_MODIFY: | |
b277c7cc | 5572 | case OFOPERATION_REPLACE: |
e615b0a3 | 5573 | if (!op->error) { |
b277c7cc BP |
5574 | long long int now = time_msec(); |
5575 | ||
5576 | rule->modified = now; | |
5577 | if (op->type == OFOPERATION_REPLACE) { | |
5578 | rule->created = rule->used = now; | |
5579 | } | |
e615b0a3 | 5580 | } else { |
98eaac36 | 5581 | ofproto_rule_change_cookie(ofproto, rule, op->flow_cookie); |
b277c7cc BP |
5582 | ovs_mutex_lock(&rule->timeout_mutex); |
5583 | rule->idle_timeout = op->idle_timeout; | |
5584 | rule->hard_timeout = op->hard_timeout; | |
5585 | ovs_mutex_unlock(&rule->timeout_mutex); | |
08043761 BP |
5586 | if (op->ofpacts) { |
5587 | free(rule->ofpacts); | |
884e1dc4 EJ |
5588 | |
5589 | ovs_rwlock_wrlock(&rule->rwlock); | |
08043761 BP |
5590 | rule->ofpacts = op->ofpacts; |
5591 | rule->ofpacts_len = op->ofpacts_len; | |
884e1dc4 EJ |
5592 | ovs_rwlock_unlock(&rule->rwlock); |
5593 | ||
08043761 BP |
5594 | op->ofpacts = NULL; |
5595 | op->ofpacts_len = 0; | |
5596 | } | |
3f517bcd | 5597 | rule->flags = op->flags; |
e615b0a3 BP |
5598 | } |
5599 | break; | |
5600 | ||
5601 | default: | |
5602 | NOT_REACHED(); | |
5603 | } | |
5604 | ||
5605 | ofoperation_destroy(op); | |
5606 | } | |
5607 | ||
2b07c8b1 BP |
5608 | ofmonitor_flush(ofproto->connmgr); |
5609 | ||
7ee20df1 | 5610 | if (!list_is_empty(&group->ofproto_node)) { |
cb22974d | 5611 | ovs_assert(ofproto->n_pending > 0); |
e615b0a3 | 5612 | ofproto->n_pending--; |
7ee20df1 BP |
5613 | list_remove(&group->ofproto_node); |
5614 | } | |
5615 | if (!list_is_empty(&group->ofconn_node)) { | |
5616 | list_remove(&group->ofconn_node); | |
e615b0a3 BP |
5617 | if (error) { |
5618 | ofconn_send_error(group->ofconn, group->request, error); | |
7ee20df1 | 5619 | } |
e615b0a3 | 5620 | connmgr_retry(ofproto->connmgr); |
7ee20df1 BP |
5621 | } |
5622 | free(group->request); | |
5623 | free(group); | |
5624 | } | |
5625 | ||
5626 | /* Initiates a new operation on 'rule', of the specified 'type', within | |
a7d94793 BP |
5627 | * 'group'. Prior to calling, 'rule' must not have any pending operation. |
5628 | * | |
2b07c8b1 BP |
5629 | * For a 'type' of OFOPERATION_DELETE, 'reason' should specify the reason that |
5630 | * the flow is being deleted. For other 'type's, 'reason' is ignored (use 0). | |
5631 | * | |
a7d94793 BP |
5632 | * Returns the newly created ofoperation (which is also available as |
5633 | * rule->pending). */ | |
5634 | static struct ofoperation * | |
7ee20df1 | 5635 | ofoperation_create(struct ofopgroup *group, struct rule *rule, |
2b07c8b1 BP |
5636 | enum ofoperation_type type, |
5637 | enum ofp_flow_removed_reason reason) | |
7ee20df1 | 5638 | { |
a5b8d268 | 5639 | struct ofproto *ofproto = group->ofproto; |
7ee20df1 BP |
5640 | struct ofoperation *op; |
5641 | ||
cb22974d | 5642 | ovs_assert(!rule->pending); |
7ee20df1 BP |
5643 | |
5644 | op = rule->pending = xzalloc(sizeof *op); | |
5645 | op->group = group; | |
5646 | list_push_back(&group->ops, &op->group_node); | |
5647 | op->rule = rule; | |
5648 | op->type = type; | |
2b07c8b1 | 5649 | op->reason = reason; |
7ee20df1 | 5650 | op->flow_cookie = rule->flow_cookie; |
b277c7cc BP |
5651 | ovs_mutex_lock(&rule->timeout_mutex); |
5652 | op->idle_timeout = rule->idle_timeout; | |
5653 | op->hard_timeout = rule->hard_timeout; | |
5654 | ovs_mutex_unlock(&rule->timeout_mutex); | |
3f517bcd | 5655 | op->flags = rule->flags; |
7ee20df1 | 5656 | |
e615b0a3 BP |
5657 | group->n_running++; |
5658 | ||
7ee20df1 | 5659 | if (type == OFOPERATION_DELETE) { |
a5b8d268 | 5660 | hmap_insert(&ofproto->deletions, &op->hmap_node, |
7ee20df1 BP |
5661 | cls_rule_hash(&rule->cr, rule->table_id)); |
5662 | } | |
a7d94793 BP |
5663 | |
5664 | return op; | |
7ee20df1 BP |
5665 | } |
5666 | ||
5667 | static void | |
5668 | ofoperation_destroy(struct ofoperation *op) | |
5669 | { | |
5670 | struct ofopgroup *group = op->group; | |
5671 | ||
5672 | if (op->rule) { | |
5673 | op->rule->pending = NULL; | |
5674 | } | |
5675 | if (op->type == OFOPERATION_DELETE) { | |
5676 | hmap_remove(&group->ofproto->deletions, &op->hmap_node); | |
5677 | } | |
5678 | list_remove(&op->group_node); | |
f25d0cf3 | 5679 | free(op->ofpacts); |
7ee20df1 | 5680 | free(op); |
7ee20df1 BP |
5681 | } |
5682 | ||
5683 | /* Indicates that 'op' completed with status 'error', which is either 0 to | |
90bf1e07 | 5684 | * indicate success or an OpenFlow error code on failure. |
7ee20df1 | 5685 | * |
a6a62132 | 5686 | * If 'error' is 0, indicating success, the operation will be committed |
b277c7cc | 5687 | * permanently to the flow table. |
a6a62132 BP |
5688 | * |
5689 | * If 'error' is nonzero, then generally the operation will be rolled back: | |
5690 | * | |
5691 | * - If 'op' is an "add flow" operation, ofproto removes the new rule or | |
5692 | * restores the original rule. The caller must have uninitialized any | |
5693 | * derived state in the new rule, as in step 5 of in the "Life Cycle" in | |
5694 | * ofproto/ofproto-provider.h. ofoperation_complete() performs steps 6 and | |
5695 | * and 7 for the new rule, calling its ->rule_dealloc() function. | |
5696 | * | |
5697 | * - If 'op' is a "modify flow" operation, ofproto restores the original | |
5698 | * actions. | |
5699 | * | |
5700 | * - 'op' must not be a "delete flow" operation. Removing a rule is not | |
5701 | * allowed to fail. It must always succeed. | |
7ee20df1 | 5702 | * |
5bee6e26 JP |
5703 | * Please see the large comment in ofproto/ofproto-provider.h titled |
5704 | * "Asynchronous Operation Support" for more information. */ | |
7ee20df1 | 5705 | void |
90bf1e07 | 5706 | ofoperation_complete(struct ofoperation *op, enum ofperr error) |
7ee20df1 BP |
5707 | { |
5708 | struct ofopgroup *group = op->group; | |
7ee20df1 | 5709 | |
cb22974d BP |
5710 | ovs_assert(op->rule->pending == op); |
5711 | ovs_assert(group->n_running > 0); | |
5712 | ovs_assert(!error || op->type != OFOPERATION_DELETE); | |
9075907c | 5713 | |
e615b0a3 BP |
5714 | op->error = error; |
5715 | if (!--group->n_running && !list_is_empty(&group->ofproto_node)) { | |
5716 | ofopgroup_complete(group); | |
7ee20df1 | 5717 | } |
7ee20df1 | 5718 | } |
064af421 | 5719 | \f |
064af421 | 5720 | static uint64_t |
fa60c019 | 5721 | pick_datapath_id(const struct ofproto *ofproto) |
064af421 | 5722 | { |
fa60c019 | 5723 | const struct ofport *port; |
064af421 | 5724 | |
abe529af | 5725 | port = ofproto_get_port(ofproto, OFPP_LOCAL); |
fa60c019 BP |
5726 | if (port) { |
5727 | uint8_t ea[ETH_ADDR_LEN]; | |
5728 | int error; | |
5729 | ||
5730 | error = netdev_get_etheraddr(port->netdev, ea); | |
064af421 BP |
5731 | if (!error) { |
5732 | return eth_addr_to_uint64(ea); | |
5733 | } | |
fbfa2911 BP |
5734 | VLOG_WARN("%s: could not get MAC address for %s (%s)", |
5735 | ofproto->name, netdev_get_name(port->netdev), | |
10a89ef0 | 5736 | ovs_strerror(error)); |
064af421 | 5737 | } |
fa60c019 | 5738 | return ofproto->fallback_dpid; |
064af421 BP |
5739 | } |
5740 | ||
5741 | static uint64_t | |
5742 | pick_fallback_dpid(void) | |
5743 | { | |
5744 | uint8_t ea[ETH_ADDR_LEN]; | |
70150daf | 5745 | eth_addr_nicira_random(ea); |
064af421 BP |
5746 | return eth_addr_to_uint64(ea); |
5747 | } | |
5748 | \f | |
254750ce BP |
5749 | /* Table overflow policy. */ |
5750 | ||
ad3efdcb EJ |
5751 | /* Chooses and updates 'rulep' with a rule to evict from 'table'. Sets 'rulep' |
5752 | * to NULL if the table is not configured to evict rules or if the table | |
5753 | * contains no evictable rules. (Rules with a readlock on their evict rwlock, | |
5754 | * or with no timeouts are not evictable.) */ | |
5755 | static bool | |
5756 | choose_rule_to_evict(struct oftable *table, struct rule **rulep) | |
254750ce BP |
5757 | { |
5758 | struct eviction_group *evg; | |
5759 | ||
ad3efdcb | 5760 | *rulep = NULL; |
254750ce | 5761 | if (!table->eviction_fields) { |
ad3efdcb | 5762 | return false; |
254750ce BP |
5763 | } |
5764 | ||
5765 | /* In the common case, the outer and inner loops here will each be entered | |
5766 | * exactly once: | |
5767 | * | |
5768 | * - The inner loop normally "return"s in its first iteration. If the | |
5769 | * eviction group has any evictable rules, then it always returns in | |
5770 | * some iteration. | |
5771 | * | |
5772 | * - The outer loop only iterates more than once if the largest eviction | |
5773 | * group has no evictable rules. | |
5774 | * | |
5775 | * - The outer loop can exit only if table's 'max_flows' is all filled up | |
afe2143d | 5776 | * by unevictable rules. */ |
254750ce BP |
5777 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { |
5778 | struct rule *rule; | |
5779 | ||
5780 | HEAP_FOR_EACH (rule, evg_node, &evg->rules) { | |
884e1dc4 | 5781 | if (!ovs_rwlock_trywrlock(&rule->rwlock)) { |
ad3efdcb EJ |
5782 | *rulep = rule; |
5783 | return true; | |
254750ce BP |
5784 | } |
5785 | } | |
5786 | } | |
5787 | ||
ad3efdcb | 5788 | return false; |
254750ce BP |
5789 | } |
5790 | ||
5791 | /* Searches 'ofproto' for tables that have more flows than their configured | |
5792 | * maximum and that have flow eviction enabled, and evicts as many flows as | |
5793 | * necessary and currently feasible from them. | |
5794 | * | |
5795 | * This triggers only when an OpenFlow table has N flows in it and then the | |
5796 | * client configures a maximum number of flows less than N. */ | |
5797 | static void | |
5798 | ofproto_evict(struct ofproto *ofproto) | |
5799 | { | |
5800 | struct ofopgroup *group; | |
5801 | struct oftable *table; | |
5802 | ||
5803 | group = ofopgroup_create_unattached(ofproto); | |
5804 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
0b4f2078 | 5805 | while (table->eviction_fields) { |
254750ce | 5806 | struct rule *rule; |
0b4f2078 EJ |
5807 | size_t n_rules; |
5808 | ||
5809 | ovs_rwlock_rdlock(&table->cls.rwlock); | |
5810 | n_rules = classifier_count(&table->cls); | |
5811 | ovs_rwlock_unlock(&table->cls.rwlock); | |
5812 | ||
5813 | if (n_rules <= table->max_flows) { | |
5814 | break; | |
5815 | } | |
254750ce | 5816 | |
ad3efdcb EJ |
5817 | if (!choose_rule_to_evict(table, &rule)) { |
5818 | break; | |
5819 | } | |
5820 | ||
5821 | if (rule->pending) { | |
884e1dc4 | 5822 | ovs_rwlock_unlock(&rule->rwlock); |
254750ce BP |
5823 | break; |
5824 | } | |
5825 | ||
2b07c8b1 BP |
5826 | ofoperation_create(group, rule, |
5827 | OFOPERATION_DELETE, OFPRR_EVICTION); | |
254750ce | 5828 | oftable_remove_rule(rule); |
8037acb4 | 5829 | ofproto->ofproto_class->rule_delete(rule); |
254750ce BP |
5830 | } |
5831 | } | |
5832 | ofopgroup_submit(group); | |
5833 | } | |
5834 | \f | |
5835 | /* Eviction groups. */ | |
5836 | ||
5837 | /* Returns the priority to use for an eviction_group that contains 'n_rules' | |
5838 | * rules. The priority contains low-order random bits to ensure that eviction | |
5839 | * groups with the same number of rules are prioritized randomly. */ | |
5840 | static uint32_t | |
5841 | eviction_group_priority(size_t n_rules) | |
5842 | { | |
5843 | uint16_t size = MIN(UINT16_MAX, n_rules); | |
5844 | return (size << 16) | random_uint16(); | |
5845 | } | |
5846 | ||
5847 | /* Updates 'evg', an eviction_group within 'table', following a change that | |
5848 | * adds or removes rules in 'evg'. */ | |
5849 | static void | |
5850 | eviction_group_resized(struct oftable *table, struct eviction_group *evg) | |
5851 | { | |
5852 | heap_change(&table->eviction_groups_by_size, &evg->size_node, | |
5853 | eviction_group_priority(heap_count(&evg->rules))); | |
5854 | } | |
5855 | ||
5856 | /* Destroys 'evg', an eviction_group within 'table': | |
5857 | * | |
5858 | * - Removes all the rules, if any, from 'evg'. (It doesn't destroy the | |
5859 | * rules themselves, just removes them from the eviction group.) | |
5860 | * | |
5861 | * - Removes 'evg' from 'table'. | |
5862 | * | |
5863 | * - Frees 'evg'. */ | |
5864 | static void | |
5865 | eviction_group_destroy(struct oftable *table, struct eviction_group *evg) | |
5866 | { | |
5867 | while (!heap_is_empty(&evg->rules)) { | |
5868 | struct rule *rule; | |
5869 | ||
5870 | rule = CONTAINER_OF(heap_pop(&evg->rules), struct rule, evg_node); | |
5871 | rule->eviction_group = NULL; | |
5872 | } | |
5873 | hmap_remove(&table->eviction_groups_by_id, &evg->id_node); | |
5874 | heap_remove(&table->eviction_groups_by_size, &evg->size_node); | |
5875 | heap_destroy(&evg->rules); | |
5876 | free(evg); | |
5877 | } | |
5878 | ||
5879 | /* Removes 'rule' from its eviction group, if any. */ | |
5880 | static void | |
5881 | eviction_group_remove_rule(struct rule *rule) | |
5882 | { | |
5883 | if (rule->eviction_group) { | |
5884 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
5885 | struct eviction_group *evg = rule->eviction_group; | |
5886 | ||
5887 | rule->eviction_group = NULL; | |
5888 | heap_remove(&evg->rules, &rule->evg_node); | |
5889 | if (heap_is_empty(&evg->rules)) { | |
5890 | eviction_group_destroy(table, evg); | |
5891 | } else { | |
5892 | eviction_group_resized(table, evg); | |
5893 | } | |
5894 | } | |
5895 | } | |
5896 | ||
5897 | /* Hashes the 'rule''s values for the eviction_fields of 'rule''s table, and | |
5898 | * returns the hash value. */ | |
5899 | static uint32_t | |
5900 | eviction_group_hash_rule(struct rule *rule) | |
5901 | { | |
5902 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
5903 | const struct mf_subfield *sf; | |
5cb7a798 | 5904 | struct flow flow; |
254750ce BP |
5905 | uint32_t hash; |
5906 | ||
5907 | hash = table->eviction_group_id_basis; | |
5cb7a798 | 5908 | miniflow_expand(&rule->cr.match.flow, &flow); |
254750ce BP |
5909 | for (sf = table->eviction_fields; |
5910 | sf < &table->eviction_fields[table->n_eviction_fields]; | |
5911 | sf++) | |
5912 | { | |
5cb7a798 | 5913 | if (mf_are_prereqs_ok(sf->field, &flow)) { |
254750ce BP |
5914 | union mf_value value; |
5915 | ||
5cb7a798 | 5916 | mf_get_value(sf->field, &flow, &value); |
254750ce BP |
5917 | if (sf->ofs) { |
5918 | bitwise_zero(&value, sf->field->n_bytes, 0, sf->ofs); | |
5919 | } | |
5920 | if (sf->ofs + sf->n_bits < sf->field->n_bytes * 8) { | |
5921 | unsigned int start = sf->ofs + sf->n_bits; | |
5922 | bitwise_zero(&value, sf->field->n_bytes, start, | |
5923 | sf->field->n_bytes * 8 - start); | |
5924 | } | |
5925 | hash = hash_bytes(&value, sf->field->n_bytes, hash); | |
5926 | } else { | |
5927 | hash = hash_int(hash, 0); | |
5928 | } | |
5929 | } | |
5930 | ||
5931 | return hash; | |
5932 | } | |
5933 | ||
5934 | /* Returns an eviction group within 'table' with the given 'id', creating one | |
5935 | * if necessary. */ | |
5936 | static struct eviction_group * | |
5937 | eviction_group_find(struct oftable *table, uint32_t id) | |
5938 | { | |
5939 | struct eviction_group *evg; | |
5940 | ||
5941 | HMAP_FOR_EACH_WITH_HASH (evg, id_node, id, &table->eviction_groups_by_id) { | |
5942 | return evg; | |
5943 | } | |
5944 | ||
5945 | evg = xmalloc(sizeof *evg); | |
5946 | hmap_insert(&table->eviction_groups_by_id, &evg->id_node, id); | |
5947 | heap_insert(&table->eviction_groups_by_size, &evg->size_node, | |
5948 | eviction_group_priority(0)); | |
5949 | heap_init(&evg->rules); | |
5950 | ||
5951 | return evg; | |
5952 | } | |
5953 | ||
5954 | /* Returns an eviction priority for 'rule'. The return value should be | |
5955 | * interpreted so that higher priorities make a rule more attractive candidates | |
5956 | * for eviction. */ | |
5957 | static uint32_t | |
5958 | rule_eviction_priority(struct rule *rule) | |
5959 | { | |
5960 | long long int hard_expiration; | |
5961 | long long int idle_expiration; | |
5962 | long long int expiration; | |
5963 | uint32_t expiration_offset; | |
5964 | ||
5965 | /* Calculate time of expiration. */ | |
a3779dbc | 5966 | ovs_mutex_lock(&rule->timeout_mutex); |
254750ce BP |
5967 | hard_expiration = (rule->hard_timeout |
5968 | ? rule->modified + rule->hard_timeout * 1000 | |
5969 | : LLONG_MAX); | |
5970 | idle_expiration = (rule->idle_timeout | |
5971 | ? rule->used + rule->idle_timeout * 1000 | |
5972 | : LLONG_MAX); | |
5973 | expiration = MIN(hard_expiration, idle_expiration); | |
a3779dbc | 5974 | ovs_mutex_unlock(&rule->timeout_mutex); |
254750ce BP |
5975 | if (expiration == LLONG_MAX) { |
5976 | return 0; | |
5977 | } | |
5978 | ||
5979 | /* Calculate the time of expiration as a number of (approximate) seconds | |
5980 | * after program startup. | |
5981 | * | |
5982 | * This should work OK for program runs that last UINT32_MAX seconds or | |
5983 | * less. Therefore, please restart OVS at least once every 136 years. */ | |
5984 | expiration_offset = (expiration >> 10) - (time_boot_msec() >> 10); | |
5985 | ||
5986 | /* Invert the expiration offset because we're using a max-heap. */ | |
5987 | return UINT32_MAX - expiration_offset; | |
5988 | } | |
5989 | ||
5990 | /* Adds 'rule' to an appropriate eviction group for its oftable's | |
5991 | * configuration. Does nothing if 'rule''s oftable doesn't have eviction | |
5992 | * enabled, or if 'rule' is a permanent rule (one that will never expire on its | |
5993 | * own). | |
5994 | * | |
5995 | * The caller must ensure that 'rule' is not already in an eviction group. */ | |
5996 | static void | |
5997 | eviction_group_add_rule(struct rule *rule) | |
5998 | { | |
5999 | struct ofproto *ofproto = rule->ofproto; | |
6000 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
a3779dbc | 6001 | bool has_timeout; |
254750ce | 6002 | |
a3779dbc EJ |
6003 | ovs_mutex_lock(&rule->timeout_mutex); |
6004 | has_timeout = rule->hard_timeout || rule->idle_timeout; | |
6005 | ovs_mutex_unlock(&rule->timeout_mutex); | |
6006 | ||
6007 | if (table->eviction_fields && has_timeout) { | |
254750ce BP |
6008 | struct eviction_group *evg; |
6009 | ||
6010 | evg = eviction_group_find(table, eviction_group_hash_rule(rule)); | |
6011 | ||
6012 | rule->eviction_group = evg; | |
6013 | heap_insert(&evg->rules, &rule->evg_node, | |
6014 | rule_eviction_priority(rule)); | |
6015 | eviction_group_resized(table, evg); | |
6016 | } | |
6017 | } | |
6018 | \f | |
d0918789 BP |
6019 | /* oftables. */ |
6020 | ||
6021 | /* Initializes 'table'. */ | |
6022 | static void | |
6023 | oftable_init(struct oftable *table) | |
6024 | { | |
5c67e4af | 6025 | memset(table, 0, sizeof *table); |
d0918789 | 6026 | classifier_init(&table->cls); |
ec1c5c7e | 6027 | table->max_flows = UINT_MAX; |
d0918789 BP |
6028 | } |
6029 | ||
254750ce | 6030 | /* Destroys 'table', including its classifier and eviction groups. |
d0918789 BP |
6031 | * |
6032 | * The caller is responsible for freeing 'table' itself. */ | |
6033 | static void | |
6034 | oftable_destroy(struct oftable *table) | |
6035 | { | |
0b4f2078 | 6036 | ovs_rwlock_rdlock(&table->cls.rwlock); |
cb22974d | 6037 | ovs_assert(classifier_is_empty(&table->cls)); |
0b4f2078 | 6038 | ovs_rwlock_unlock(&table->cls.rwlock); |
254750ce | 6039 | oftable_disable_eviction(table); |
d0918789 | 6040 | classifier_destroy(&table->cls); |
254750ce BP |
6041 | free(table->name); |
6042 | } | |
6043 | ||
6044 | /* Changes the name of 'table' to 'name'. If 'name' is NULL or the empty | |
6045 | * string, then 'table' will use its default name. | |
6046 | * | |
6047 | * This only affects the name exposed for a table exposed through the OpenFlow | |
6048 | * OFPST_TABLE (as printed by "ovs-ofctl dump-tables"). */ | |
6049 | static void | |
6050 | oftable_set_name(struct oftable *table, const char *name) | |
6051 | { | |
6052 | if (name && name[0]) { | |
6053 | int len = strnlen(name, OFP_MAX_TABLE_NAME_LEN); | |
6054 | if (!table->name || strncmp(name, table->name, len)) { | |
6055 | free(table->name); | |
6056 | table->name = xmemdup0(name, len); | |
6057 | } | |
6058 | } else { | |
6059 | free(table->name); | |
6060 | table->name = NULL; | |
6061 | } | |
6062 | } | |
6063 | ||
6064 | /* oftables support a choice of two policies when adding a rule would cause the | |
6065 | * number of flows in the table to exceed the configured maximum number: either | |
6066 | * they can refuse to add the new flow or they can evict some existing flow. | |
6067 | * This function configures the former policy on 'table'. */ | |
6068 | static void | |
6069 | oftable_disable_eviction(struct oftable *table) | |
6070 | { | |
6071 | if (table->eviction_fields) { | |
6072 | struct eviction_group *evg, *next; | |
6073 | ||
6074 | HMAP_FOR_EACH_SAFE (evg, next, id_node, | |
6075 | &table->eviction_groups_by_id) { | |
6076 | eviction_group_destroy(table, evg); | |
6077 | } | |
6078 | hmap_destroy(&table->eviction_groups_by_id); | |
6079 | heap_destroy(&table->eviction_groups_by_size); | |
6080 | ||
6081 | free(table->eviction_fields); | |
6082 | table->eviction_fields = NULL; | |
6083 | table->n_eviction_fields = 0; | |
6084 | } | |
6085 | } | |
6086 | ||
6087 | /* oftables support a choice of two policies when adding a rule would cause the | |
6088 | * number of flows in the table to exceed the configured maximum number: either | |
6089 | * they can refuse to add the new flow or they can evict some existing flow. | |
6090 | * This function configures the latter policy on 'table', with fairness based | |
6091 | * on the values of the 'n_fields' fields specified in 'fields'. (Specifying | |
6092 | * 'n_fields' as 0 disables fairness.) */ | |
6093 | static void | |
6094 | oftable_enable_eviction(struct oftable *table, | |
6095 | const struct mf_subfield *fields, size_t n_fields) | |
6096 | { | |
6097 | struct cls_cursor cursor; | |
6098 | struct rule *rule; | |
6099 | ||
6100 | if (table->eviction_fields | |
6101 | && n_fields == table->n_eviction_fields | |
6102 | && (!n_fields | |
6103 | || !memcmp(fields, table->eviction_fields, | |
6104 | n_fields * sizeof *fields))) { | |
6105 | /* No change. */ | |
6106 | return; | |
6107 | } | |
6108 | ||
6109 | oftable_disable_eviction(table); | |
6110 | ||
6111 | table->n_eviction_fields = n_fields; | |
6112 | table->eviction_fields = xmemdup(fields, n_fields * sizeof *fields); | |
6113 | ||
6114 | table->eviction_group_id_basis = random_uint32(); | |
6115 | hmap_init(&table->eviction_groups_by_id); | |
6116 | heap_init(&table->eviction_groups_by_size); | |
6117 | ||
0b4f2078 | 6118 | ovs_rwlock_rdlock(&table->cls.rwlock); |
254750ce BP |
6119 | cls_cursor_init(&cursor, &table->cls, NULL); |
6120 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { | |
6121 | eviction_group_add_rule(rule); | |
6122 | } | |
0b4f2078 | 6123 | ovs_rwlock_unlock(&table->cls.rwlock); |
d0918789 BP |
6124 | } |
6125 | ||
6126 | /* Removes 'rule' from the oftable that contains it. */ | |
6127 | static void | |
0b4f2078 | 6128 | oftable_remove_rule__(struct ofproto *ofproto, struct classifier *cls, |
47b52c71 | 6129 | struct rule *rule) |
884e1dc4 | 6130 | OVS_REQ_WRLOCK(cls->rwlock) OVS_RELEASES(rule->rwlock) |
d0918789 | 6131 | { |
0b4f2078 | 6132 | classifier_remove(cls, &rule->cr); |
98eaac36 | 6133 | cookies_remove(ofproto, rule); |
254750ce | 6134 | eviction_group_remove_rule(rule); |
83b16b98 | 6135 | ovs_mutex_lock(&ofproto->expirable_mutex); |
e503cc19 SH |
6136 | if (!list_is_empty(&rule->expirable)) { |
6137 | list_remove(&rule->expirable); | |
6138 | } | |
83b16b98 | 6139 | ovs_mutex_unlock(&ofproto->expirable_mutex); |
9cae45dc JR |
6140 | if (!list_is_empty(&rule->meter_list_node)) { |
6141 | list_remove(&rule->meter_list_node); | |
51b50dfd | 6142 | list_init(&rule->meter_list_node); |
9cae45dc | 6143 | } |
884e1dc4 | 6144 | ovs_rwlock_unlock(&rule->rwlock); |
d0918789 BP |
6145 | } |
6146 | ||
0b4f2078 EJ |
6147 | static void |
6148 | oftable_remove_rule(struct rule *rule) | |
6149 | { | |
6150 | struct ofproto *ofproto = rule->ofproto; | |
6151 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
6152 | ||
6153 | ovs_rwlock_wrlock(&table->cls.rwlock); | |
6154 | oftable_remove_rule__(ofproto, &table->cls, rule); | |
6155 | ovs_rwlock_unlock(&table->cls.rwlock); | |
6156 | } | |
6157 | ||
b277c7cc BP |
6158 | /* Inserts 'rule' into its oftable, which must not already contain any rule for |
6159 | * the same cls_rule. */ | |
6160 | static void | |
6161 | oftable_insert_rule(struct rule *rule) | |
d0918789 BP |
6162 | { |
6163 | struct ofproto *ofproto = rule->ofproto; | |
6164 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
a3779dbc EJ |
6165 | bool may_expire; |
6166 | ||
6167 | ovs_mutex_lock(&rule->timeout_mutex); | |
6168 | may_expire = rule->hard_timeout || rule->idle_timeout; | |
6169 | ovs_mutex_unlock(&rule->timeout_mutex); | |
e503cc19 SH |
6170 | |
6171 | if (may_expire) { | |
83b16b98 | 6172 | ovs_mutex_lock(&ofproto->expirable_mutex); |
e503cc19 | 6173 | list_insert(&ofproto->expirable, &rule->expirable); |
83b16b98 | 6174 | ovs_mutex_unlock(&ofproto->expirable_mutex); |
e503cc19 | 6175 | } |
98eaac36 | 6176 | cookies_insert(ofproto, rule); |
9cae45dc JR |
6177 | if (rule->meter_id) { |
6178 | struct meter *meter = ofproto->meters[rule->meter_id]; | |
6179 | list_insert(&meter->rules, &rule->meter_list_node); | |
6180 | } | |
0b4f2078 | 6181 | ovs_rwlock_wrlock(&table->cls.rwlock); |
b277c7cc | 6182 | classifier_insert(&table->cls, &rule->cr); |
0b4f2078 | 6183 | ovs_rwlock_unlock(&table->cls.rwlock); |
254750ce | 6184 | eviction_group_add_rule(rule); |
d0918789 BP |
6185 | } |
6186 | \f | |
abe529af | 6187 | /* unixctl commands. */ |
7aa697dd | 6188 | |
abe529af | 6189 | struct ofproto * |
2ac6bedd | 6190 | ofproto_lookup(const char *name) |
7aa697dd | 6191 | { |
2ac6bedd | 6192 | struct ofproto *ofproto; |
7aa697dd | 6193 | |
2ac6bedd BP |
6194 | HMAP_FOR_EACH_WITH_HASH (ofproto, hmap_node, hash_string(name, 0), |
6195 | &all_ofprotos) { | |
6196 | if (!strcmp(ofproto->name, name)) { | |
6197 | return ofproto; | |
6198 | } | |
7aa697dd | 6199 | } |
2ac6bedd | 6200 | return NULL; |
7aa697dd BP |
6201 | } |
6202 | ||
6203 | static void | |
0e15264f BP |
6204 | ofproto_unixctl_list(struct unixctl_conn *conn, int argc OVS_UNUSED, |
6205 | const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED) | |
7aa697dd | 6206 | { |
7aa697dd | 6207 | struct ofproto *ofproto; |
7aa697dd | 6208 | struct ds results; |
7aa697dd | 6209 | |
7aa697dd | 6210 | ds_init(&results); |
2ac6bedd BP |
6211 | HMAP_FOR_EACH (ofproto, hmap_node, &all_ofprotos) { |
6212 | ds_put_format(&results, "%s\n", ofproto->name); | |
7aa697dd | 6213 | } |
bde9f75d | 6214 | unixctl_command_reply(conn, ds_cstr(&results)); |
7aa697dd | 6215 | ds_destroy(&results); |
7aa697dd BP |
6216 | } |
6217 | ||
6218 | static void | |
6219 | ofproto_unixctl_init(void) | |
6220 | { | |
6221 | static bool registered; | |
6222 | if (registered) { | |
6223 | return; | |
6224 | } | |
6225 | registered = true; | |
6226 | ||
0e15264f BP |
6227 | unixctl_command_register("ofproto/list", "", 0, 0, |
6228 | ofproto_unixctl_list, NULL); | |
064af421 | 6229 | } |
52a90c29 BP |
6230 | \f |
6231 | /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.) | |
6232 | * | |
6233 | * This is deprecated. It is only for compatibility with broken device drivers | |
6234 | * in old versions of Linux that do not properly support VLANs when VLAN | |
6235 | * devices are not used. When broken device drivers are no longer in | |
6236 | * widespread use, we will delete these interfaces. */ | |
6237 | ||
6238 | /* Sets a 1-bit in the 4096-bit 'vlan_bitmap' for each VLAN ID that is matched | |
6239 | * (exactly) by an OpenFlow rule in 'ofproto'. */ | |
6240 | void | |
6241 | ofproto_get_vlan_usage(struct ofproto *ofproto, unsigned long int *vlan_bitmap) | |
6242 | { | |
d0918789 | 6243 | const struct oftable *oftable; |
52a90c29 BP |
6244 | |
6245 | free(ofproto->vlan_bitmap); | |
6246 | ofproto->vlan_bitmap = bitmap_allocate(4096); | |
6247 | ofproto->vlans_changed = false; | |
6248 | ||
d0918789 | 6249 | OFPROTO_FOR_EACH_TABLE (oftable, ofproto) { |
52a90c29 BP |
6250 | const struct cls_table *table; |
6251 | ||
d0918789 | 6252 | HMAP_FOR_EACH (table, hmap_node, &oftable->cls.tables) { |
5cb7a798 | 6253 | if (minimask_get_vid_mask(&table->mask) == VLAN_VID_MASK) { |
52a90c29 BP |
6254 | const struct cls_rule *rule; |
6255 | ||
6256 | HMAP_FOR_EACH (rule, hmap_node, &table->rules) { | |
5cb7a798 | 6257 | uint16_t vid = miniflow_get_vid(&rule->match.flow); |
52a90c29 BP |
6258 | bitmap_set1(vlan_bitmap, vid); |
6259 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
6260 | } | |
6261 | } | |
6262 | } | |
6263 | } | |
6264 | } | |
6265 | ||
6266 | /* Returns true if new VLANs have come into use by the flow table since the | |
6267 | * last call to ofproto_get_vlan_usage(). | |
6268 | * | |
6269 | * We don't track when old VLANs stop being used. */ | |
6270 | bool | |
6271 | ofproto_has_vlan_usage_changed(const struct ofproto *ofproto) | |
6272 | { | |
6273 | return ofproto->vlans_changed; | |
6274 | } | |
6275 | ||
6276 | /* Configures a VLAN splinter binding between the ports identified by OpenFlow | |
6277 | * port numbers 'vlandev_ofp_port' and 'realdev_ofp_port'. If | |
6278 | * 'realdev_ofp_port' is nonzero, then the VLAN device is enslaved to the real | |
6279 | * device as a VLAN splinter for VLAN ID 'vid'. If 'realdev_ofp_port' is zero, | |
6280 | * then the VLAN device is un-enslaved. */ | |
6281 | int | |
4e022ec0 AW |
6282 | ofproto_port_set_realdev(struct ofproto *ofproto, ofp_port_t vlandev_ofp_port, |
6283 | ofp_port_t realdev_ofp_port, int vid) | |
52a90c29 BP |
6284 | { |
6285 | struct ofport *ofport; | |
6286 | int error; | |
6287 | ||
cb22974d | 6288 | ovs_assert(vlandev_ofp_port != realdev_ofp_port); |
52a90c29 BP |
6289 | |
6290 | ofport = ofproto_get_port(ofproto, vlandev_ofp_port); | |
6291 | if (!ofport) { | |
6292 | VLOG_WARN("%s: cannot set realdev on nonexistent port %"PRIu16, | |
6293 | ofproto->name, vlandev_ofp_port); | |
6294 | return EINVAL; | |
6295 | } | |
6296 | ||
6297 | if (!ofproto->ofproto_class->set_realdev) { | |
6298 | if (!vlandev_ofp_port) { | |
6299 | return 0; | |
6300 | } | |
6301 | VLOG_WARN("%s: vlan splinters not supported", ofproto->name); | |
6302 | return EOPNOTSUPP; | |
6303 | } | |
6304 | ||
6305 | error = ofproto->ofproto_class->set_realdev(ofport, realdev_ofp_port, vid); | |
6306 | if (error) { | |
6307 | VLOG_WARN("%s: setting realdev on port %"PRIu16" (%s) failed (%s)", | |
6308 | ofproto->name, vlandev_ofp_port, | |
10a89ef0 | 6309 | netdev_get_name(ofport->netdev), ovs_strerror(error)); |
52a90c29 BP |
6310 | } |
6311 | return error; | |
6312 | } |