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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. */ | |
6f00e29b | 127 | struct rule_actions *actions; |
08043761 | 128 | |
2b07c8b1 BP |
129 | /* OFOPERATION_DELETE. */ |
130 | enum ofp_flow_removed_reason reason; /* Reason flow was removed. */ | |
131 | ||
3f517bcd DB |
132 | ovs_be64 flow_cookie; /* Rule's old flow cookie. */ |
133 | uint16_t idle_timeout; /* Rule's old idle timeout. */ | |
134 | uint16_t hard_timeout; /* Rule's old hard timeout. */ | |
135 | enum ofputil_flow_mod_flags flags; /* Rule's old flags. */ | |
136 | enum ofperr error; /* 0 if no error. */ | |
7ee20df1 BP |
137 | }; |
138 | ||
a7d94793 BP |
139 | static struct ofoperation *ofoperation_create(struct ofopgroup *, |
140 | struct rule *, | |
2b07c8b1 BP |
141 | enum ofoperation_type, |
142 | enum ofp_flow_removed_reason); | |
7ee20df1 BP |
143 | static void ofoperation_destroy(struct ofoperation *); |
144 | ||
d0918789 BP |
145 | /* oftable. */ |
146 | static void oftable_init(struct oftable *); | |
147 | static void oftable_destroy(struct oftable *); | |
878ae780 | 148 | |
254750ce BP |
149 | static void oftable_set_name(struct oftable *, const char *name); |
150 | ||
151 | static void oftable_disable_eviction(struct oftable *); | |
152 | static void oftable_enable_eviction(struct oftable *, | |
153 | const struct mf_subfield *fields, | |
154 | size_t n_fields); | |
155 | ||
c7c9a7c8 | 156 | static void oftable_remove_rule(struct rule *rule) OVS_RELEASES(rule->mutex); |
0b4f2078 EJ |
157 | static void oftable_remove_rule__(struct ofproto *ofproto, |
158 | struct classifier *cls, struct rule *rule) | |
c7c9a7c8 | 159 | OVS_REQ_WRLOCK(cls->rwlock) OVS_RELEASES(rule->mutex); |
b277c7cc | 160 | static void oftable_insert_rule(struct rule *); |
064af421 | 161 | |
254750ce BP |
162 | /* A set of rules within a single OpenFlow table (oftable) that have the same |
163 | * values for the oftable's eviction_fields. A rule to be evicted, when one is | |
164 | * needed, is taken from the eviction group that contains the greatest number | |
165 | * of rules. | |
166 | * | |
167 | * An oftable owns any number of eviction groups, each of which contains any | |
168 | * number of rules. | |
169 | * | |
170 | * Membership in an eviction group is imprecise, based on the hash of the | |
171 | * oftable's eviction_fields (in the eviction_group's id_node.hash member). | |
172 | * That is, if two rules have different eviction_fields, but those | |
173 | * eviction_fields hash to the same value, then they will belong to the same | |
174 | * eviction_group anyway. | |
175 | * | |
176 | * (When eviction is not enabled on an oftable, we don't track any eviction | |
177 | * groups, to save time and space.) */ | |
178 | struct eviction_group { | |
179 | struct hmap_node id_node; /* In oftable's "eviction_groups_by_id". */ | |
180 | struct heap_node size_node; /* In oftable's "eviction_groups_by_size". */ | |
181 | struct heap rules; /* Contains "struct rule"s. */ | |
182 | }; | |
183 | ||
ad3efdcb | 184 | static bool choose_rule_to_evict(struct oftable *table, struct rule **rulep) |
c7c9a7c8 | 185 | OVS_TRY_WRLOCK(true, (*rulep)->mutex); |
254750ce BP |
186 | static void ofproto_evict(struct ofproto *); |
187 | static uint32_t rule_eviction_priority(struct rule *); | |
b277c7cc BP |
188 | static void eviction_group_add_rule(struct rule *); |
189 | static void eviction_group_remove_rule(struct rule *); | |
f29152ca | 190 | |
a9b22b7f BP |
191 | /* Criteria that flow_mod and other operations use for selecting rules on |
192 | * which to operate. */ | |
193 | struct rule_criteria { | |
194 | /* An OpenFlow table or 255 for all tables. */ | |
195 | uint8_t table_id; | |
196 | ||
197 | /* OpenFlow matching criteria. Interpreted different in "loose" way by | |
198 | * collect_rules_loose() and "strict" way by collect_rules_strict(), as | |
199 | * defined in the OpenFlow spec. */ | |
200 | struct cls_rule cr; | |
201 | ||
202 | /* Matching criteria for the OpenFlow cookie. Consider a bit B in a rule's | |
203 | * cookie and the corresponding bits C in 'cookie' and M in 'cookie_mask'. | |
204 | * The rule will not be selected if M is 1 and B != C. */ | |
205 | ovs_be64 cookie; | |
206 | ovs_be64 cookie_mask; | |
207 | ||
208 | /* Selection based on actions within a rule: | |
209 | * | |
210 | * If out_port != OFPP_ANY, selects only rules that output to out_port. | |
211 | * If out_group != OFPG_ALL, select only rules that output to out_group. */ | |
212 | ofp_port_t out_port; | |
213 | uint32_t out_group; | |
214 | }; | |
215 | ||
216 | static void rule_criteria_init(struct rule_criteria *, uint8_t table_id, | |
217 | const struct match *match, | |
218 | unsigned int priority, | |
219 | ovs_be64 cookie, ovs_be64 cookie_mask, | |
220 | ofp_port_t out_port, uint32_t out_group); | |
221 | static void rule_criteria_destroy(struct rule_criteria *); | |
222 | ||
35412852 BP |
223 | /* A packet that needs to be passed to rule_execute(). */ |
224 | struct rule_execute { | |
225 | struct list list_node; /* In struct ofproto's "rule_executes" list. */ | |
226 | struct rule *rule; /* Owns a reference to the rule. */ | |
227 | ofp_port_t in_port; | |
228 | struct ofpbuf *packet; /* Owns the packet. */ | |
229 | }; | |
230 | ||
231 | static void run_rule_executes(struct ofproto *); | |
232 | static void destroy_rule_executes(struct ofproto *); | |
233 | ||
d0918789 BP |
234 | /* ofport. */ |
235 | static void ofport_destroy__(struct ofport *); | |
236 | static void ofport_destroy(struct ofport *); | |
237 | ||
238 | static void update_port(struct ofproto *, const char *devname); | |
239 | static int init_ports(struct ofproto *); | |
240 | static void reinit_ports(struct ofproto *); | |
7ee20df1 | 241 | |
254750ce BP |
242 | /* rule. */ |
243 | static void ofproto_rule_destroy__(struct rule *); | |
244 | static void ofproto_rule_send_removed(struct rule *, uint8_t reason); | |
245 | static bool rule_is_modifiable(const struct rule *); | |
254750ce | 246 | |
d0918789 | 247 | /* OpenFlow. */ |
90bf1e07 | 248 | static enum ofperr add_flow(struct ofproto *, struct ofconn *, |
e3b56933 | 249 | struct ofputil_flow_mod *, |
90bf1e07 | 250 | const struct ofp_header *); |
b277c7cc BP |
251 | static enum ofperr modify_flows__(struct ofproto *, struct ofconn *, |
252 | struct ofputil_flow_mod *, | |
a8e547c1 BP |
253 | const struct ofp_header *, |
254 | const struct rule_collection *); | |
ad3efdcb EJ |
255 | static void delete_flow__(struct rule *rule, struct ofopgroup *, |
256 | enum ofp_flow_removed_reason) | |
c7c9a7c8 | 257 | OVS_RELEASES(rule->mutex); |
7395c052 | 258 | static enum ofperr add_group(struct ofproto *, struct ofputil_group_mod *); |
e03248b7 | 259 | static bool handle_openflow(struct ofconn *, const struct ofpbuf *); |
90bf1e07 | 260 | static enum ofperr handle_flow_mod__(struct ofproto *, struct ofconn *, |
e3b56933 | 261 | struct ofputil_flow_mod *, |
d0918789 | 262 | const struct ofp_header *); |
65e0be10 BP |
263 | static void calc_duration(long long int start, long long int now, |
264 | uint32_t *sec, uint32_t *nsec); | |
f29152ca | 265 | |
d0918789 BP |
266 | /* ofproto. */ |
267 | static uint64_t pick_datapath_id(const struct ofproto *); | |
268 | static uint64_t pick_fallback_dpid(void); | |
269 | static void ofproto_destroy__(struct ofproto *); | |
ada3428f | 270 | static void update_mtu(struct ofproto *, struct ofport *); |
6b3f7f02 | 271 | static void meter_delete(struct ofproto *, uint32_t first, uint32_t last); |
f29152ca | 272 | |
d0918789 | 273 | /* unixctl. */ |
abe529af | 274 | static void ofproto_unixctl_init(void); |
f29152ca | 275 | |
abe529af BP |
276 | /* All registered ofproto classes, in probe order. */ |
277 | static const struct ofproto_class **ofproto_classes; | |
278 | static size_t n_ofproto_classes; | |
279 | static size_t allocated_ofproto_classes; | |
7aa697dd | 280 | |
abe7b10f BP |
281 | struct ovs_mutex ofproto_mutex; |
282 | ||
380f49c4 | 283 | unsigned flow_eviction_threshold = OFPROTO_FLOW_EVICTION_THRESHOLD_DEFAULT; |
448a4b2f | 284 | unsigned n_handler_threads; |
7155fa52 | 285 | enum ofproto_flow_miss_model flow_miss_model = OFPROTO_HANDLE_MISS_AUTO; |
380f49c4 | 286 | |
f797957a | 287 | /* Map from datapath name to struct ofproto, for use by unixctl commands. */ |
abe529af | 288 | static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos); |
ebe482fd | 289 | |
e1b1d06a JP |
290 | /* Initial mappings of port to OpenFlow number mappings. */ |
291 | static struct shash init_ofp_ports = SHASH_INITIALIZER(&init_ofp_ports); | |
292 | ||
abe529af | 293 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
f29152ca | 294 | |
40358701 GS |
295 | /* The default value of true waits for flow restore. */ |
296 | static bool flow_restore_wait = true; | |
297 | ||
b0408fca JP |
298 | /* Must be called to initialize the ofproto library. |
299 | * | |
300 | * The caller may pass in 'iface_hints', which contains an shash of | |
301 | * "iface_hint" elements indexed by the interface's name. The provider | |
302 | * may use these hints to describe the startup configuration in order to | |
303 | * reinitialize its state. The caller owns the provided data, so a | |
304 | * provider will make copies of anything required. An ofproto provider | |
305 | * will remove any existing state that is not described by the hint, and | |
306 | * may choose to remove it all. */ | |
307 | void | |
308 | ofproto_init(const struct shash *iface_hints) | |
abe529af | 309 | { |
e1b1d06a | 310 | struct shash_node *node; |
b0408fca | 311 | size_t i; |
f29152ca | 312 | |
abe7b10f BP |
313 | ovs_mutex_init_recursive(&ofproto_mutex); |
314 | ||
b0408fca JP |
315 | ofproto_class_register(&ofproto_dpif_class); |
316 | ||
e1b1d06a JP |
317 | /* Make a local copy, since we don't own 'iface_hints' elements. */ |
318 | SHASH_FOR_EACH(node, iface_hints) { | |
319 | const struct iface_hint *orig_hint = node->data; | |
320 | struct iface_hint *new_hint = xmalloc(sizeof *new_hint); | |
321 | const char *br_type = ofproto_normalize_type(orig_hint->br_type); | |
322 | ||
323 | new_hint->br_name = xstrdup(orig_hint->br_name); | |
324 | new_hint->br_type = xstrdup(br_type); | |
325 | new_hint->ofp_port = orig_hint->ofp_port; | |
326 | ||
327 | shash_add(&init_ofp_ports, node->name, new_hint); | |
328 | } | |
329 | ||
b0408fca | 330 | for (i = 0; i < n_ofproto_classes; i++) { |
e1b1d06a | 331 | ofproto_classes[i]->init(&init_ofp_ports); |
abe529af BP |
332 | } |
333 | } | |
f29152ca | 334 | |
abe529af BP |
335 | /* 'type' should be a normalized datapath type, as returned by |
336 | * ofproto_normalize_type(). Returns the corresponding ofproto_class | |
337 | * structure, or a null pointer if there is none registered for 'type'. */ | |
338 | static const struct ofproto_class * | |
339 | ofproto_class_find__(const char *type) | |
340 | { | |
341 | size_t i; | |
f29152ca | 342 | |
abe529af BP |
343 | for (i = 0; i < n_ofproto_classes; i++) { |
344 | const struct ofproto_class *class = ofproto_classes[i]; | |
345 | struct sset types; | |
346 | bool found; | |
064af421 | 347 | |
abe529af BP |
348 | sset_init(&types); |
349 | class->enumerate_types(&types); | |
350 | found = sset_contains(&types, type); | |
351 | sset_destroy(&types); | |
bcf84111 | 352 | |
abe529af BP |
353 | if (found) { |
354 | return class; | |
355 | } | |
356 | } | |
357 | VLOG_WARN("unknown datapath type %s", type); | |
358 | return NULL; | |
359 | } | |
064af421 | 360 | |
abe529af BP |
361 | /* Registers a new ofproto class. After successful registration, new ofprotos |
362 | * of that type can be created using ofproto_create(). */ | |
363 | int | |
364 | ofproto_class_register(const struct ofproto_class *new_class) | |
365 | { | |
366 | size_t i; | |
7aa697dd | 367 | |
abe529af BP |
368 | for (i = 0; i < n_ofproto_classes; i++) { |
369 | if (ofproto_classes[i] == new_class) { | |
370 | return EEXIST; | |
371 | } | |
372 | } | |
064af421 | 373 | |
abe529af BP |
374 | if (n_ofproto_classes >= allocated_ofproto_classes) { |
375 | ofproto_classes = x2nrealloc(ofproto_classes, | |
376 | &allocated_ofproto_classes, | |
377 | sizeof *ofproto_classes); | |
378 | } | |
379 | ofproto_classes[n_ofproto_classes++] = new_class; | |
380 | return 0; | |
381 | } | |
064af421 | 382 | |
abe529af BP |
383 | /* Unregisters a datapath provider. 'type' must have been previously |
384 | * registered and not currently be in use by any ofprotos. After | |
385 | * unregistration new datapaths of that type cannot be opened using | |
386 | * ofproto_create(). */ | |
387 | int | |
388 | ofproto_class_unregister(const struct ofproto_class *class) | |
389 | { | |
390 | size_t i; | |
76ce9432 | 391 | |
abe529af BP |
392 | for (i = 0; i < n_ofproto_classes; i++) { |
393 | if (ofproto_classes[i] == class) { | |
394 | for (i++; i < n_ofproto_classes; i++) { | |
395 | ofproto_classes[i - 1] = ofproto_classes[i]; | |
396 | } | |
397 | n_ofproto_classes--; | |
398 | return 0; | |
399 | } | |
400 | } | |
401 | VLOG_WARN("attempted to unregister an ofproto class that is not " | |
402 | "registered"); | |
403 | return EAFNOSUPPORT; | |
404 | } | |
4a4cdb3b | 405 | |
f79e673f BP |
406 | /* Clears 'types' and enumerates all registered ofproto types into it. The |
407 | * caller must first initialize the sset. */ | |
408 | void | |
409 | ofproto_enumerate_types(struct sset *types) | |
410 | { | |
abe529af | 411 | size_t i; |
064af421 | 412 | |
abe529af BP |
413 | for (i = 0; i < n_ofproto_classes; i++) { |
414 | ofproto_classes[i]->enumerate_types(types); | |
415 | } | |
f79e673f | 416 | } |
064af421 | 417 | |
f79e673f BP |
418 | /* Returns the fully spelled out name for the given ofproto 'type'. |
419 | * | |
420 | * Normalized type string can be compared with strcmp(). Unnormalized type | |
421 | * string might be the same even if they have different spellings. */ | |
422 | const char * | |
423 | ofproto_normalize_type(const char *type) | |
424 | { | |
abe529af | 425 | return type && type[0] ? type : "system"; |
f79e673f | 426 | } |
064af421 | 427 | |
f79e673f BP |
428 | /* Clears 'names' and enumerates the names of all known created ofprotos with |
429 | * the given 'type'. The caller must first initialize the sset. Returns 0 if | |
430 | * successful, otherwise a positive errno value. | |
431 | * | |
432 | * Some kinds of datapaths might not be practically enumerable. This is not | |
433 | * considered an error. */ | |
434 | int | |
435 | ofproto_enumerate_names(const char *type, struct sset *names) | |
436 | { | |
abe529af BP |
437 | const struct ofproto_class *class = ofproto_class_find__(type); |
438 | return class ? class->enumerate_names(type, names) : EAFNOSUPPORT; | |
439 | } | |
7aa697dd | 440 | |
064af421 | 441 | int |
abe529af | 442 | ofproto_create(const char *datapath_name, const char *datapath_type, |
064af421 BP |
443 | struct ofproto **ofprotop) |
444 | { | |
abe529af BP |
445 | const struct ofproto_class *class; |
446 | struct ofproto *ofproto; | |
064af421 | 447 | int error; |
c2f0373a | 448 | int i; |
064af421 BP |
449 | |
450 | *ofprotop = NULL; | |
451 | ||
7aa697dd BP |
452 | ofproto_unixctl_init(); |
453 | ||
abe529af BP |
454 | datapath_type = ofproto_normalize_type(datapath_type); |
455 | class = ofproto_class_find__(datapath_type); | |
456 | if (!class) { | |
457 | VLOG_WARN("could not create datapath %s of unknown type %s", | |
458 | datapath_name, datapath_type); | |
459 | return EAFNOSUPPORT; | |
064af421 BP |
460 | } |
461 | ||
abe529af BP |
462 | ofproto = class->alloc(); |
463 | if (!ofproto) { | |
464 | VLOG_ERR("failed to allocate datapath %s of type %s", | |
465 | datapath_name, datapath_type); | |
466 | return ENOMEM; | |
467 | } | |
468 | ||
469 | /* Initialize. */ | |
abe7b10f | 470 | ovs_mutex_lock(&ofproto_mutex); |
abe529af BP |
471 | memset(ofproto, 0, sizeof *ofproto); |
472 | ofproto->ofproto_class = class; | |
473 | ofproto->name = xstrdup(datapath_name); | |
474 | ofproto->type = xstrdup(datapath_type); | |
475 | hmap_insert(&all_ofprotos, &ofproto->hmap_node, | |
476 | hash_string(ofproto->name, 0)); | |
477 | ofproto->datapath_id = 0; | |
8402c74b | 478 | ofproto->forward_bpdu = false; |
abe529af | 479 | ofproto->fallback_dpid = pick_fallback_dpid(); |
061bfea4 BP |
480 | ofproto->mfr_desc = NULL; |
481 | ofproto->hw_desc = NULL; | |
482 | ofproto->sw_desc = NULL; | |
483 | ofproto->serial_desc = NULL; | |
484 | ofproto->dp_desc = NULL; | |
7257b535 | 485 | ofproto->frag_handling = OFPC_FRAG_NORMAL; |
abe529af BP |
486 | hmap_init(&ofproto->ports); |
487 | shash_init(&ofproto->port_by_name); | |
e1b1d06a | 488 | simap_init(&ofproto->ofp_requests); |
430dbb14 | 489 | ofproto->max_ports = ofp_to_u16(OFPP_MAX); |
448c2fa8 | 490 | ofproto->eviction_group_timer = LLONG_MIN; |
6c1491fb BP |
491 | ofproto->tables = NULL; |
492 | ofproto->n_tables = 0; | |
98eaac36 | 493 | hindex_init(&ofproto->cookies); |
e503cc19 | 494 | list_init(&ofproto->expirable); |
abe529af | 495 | ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name); |
7ee20df1 BP |
496 | ofproto->state = S_OPENFLOW; |
497 | list_init(&ofproto->pending); | |
dd5616b3 | 498 | ofproto->n_pending = 0; |
7ee20df1 | 499 | hmap_init(&ofproto->deletions); |
35412852 | 500 | guarded_list_init(&ofproto->rule_executes); |
a5b8d268 BP |
501 | ofproto->n_add = ofproto->n_delete = ofproto->n_modify = 0; |
502 | ofproto->first_op = ofproto->last_op = LLONG_MIN; | |
503 | ofproto->next_op_report = LLONG_MAX; | |
504 | ofproto->op_backoff = LLONG_MIN; | |
52a90c29 BP |
505 | ofproto->vlan_bitmap = NULL; |
506 | ofproto->vlans_changed = false; | |
ada3428f | 507 | ofproto->min_mtu = INT_MAX; |
7395c052 NZ |
508 | ovs_rwlock_init(&ofproto->groups_rwlock); |
509 | hmap_init(&ofproto->groups); | |
abe7b10f | 510 | ovs_mutex_unlock(&ofproto_mutex); |
abe529af | 511 | |
0f5f95a9 | 512 | error = ofproto->ofproto_class->construct(ofproto); |
19a87e36 | 513 | if (error) { |
abe529af | 514 | VLOG_ERR("failed to open datapath %s: %s", |
10a89ef0 | 515 | datapath_name, ovs_strerror(error)); |
abe529af | 516 | ofproto_destroy__(ofproto); |
19a87e36 BP |
517 | return error; |
518 | } | |
073e2a6f | 519 | |
e1b1d06a JP |
520 | /* The "max_ports" member should have been set by ->construct(ofproto). |
521 | * Port 0 is not a valid OpenFlow port, so mark that as unavailable. */ | |
430dbb14 | 522 | ofproto->ofp_port_ids = bitmap_allocate(ofproto->max_ports); |
e1b1d06a JP |
523 | bitmap_set1(ofproto->ofp_port_ids, 0); |
524 | ||
c2f0373a | 525 | /* Check that hidden tables, if any, are at the end. */ |
cb22974d | 526 | ovs_assert(ofproto->n_tables); |
c2f0373a BP |
527 | for (i = 0; i + 1 < ofproto->n_tables; i++) { |
528 | enum oftable_flags flags = ofproto->tables[i].flags; | |
529 | enum oftable_flags next_flags = ofproto->tables[i + 1].flags; | |
530 | ||
cb22974d | 531 | ovs_assert(!(flags & OFTABLE_HIDDEN) || next_flags & OFTABLE_HIDDEN); |
c2f0373a | 532 | } |
19a87e36 | 533 | |
abe529af | 534 | ofproto->datapath_id = pick_datapath_id(ofproto); |
abe529af | 535 | init_ports(ofproto); |
7aa697dd | 536 | |
9cae45dc JR |
537 | /* Initialize meters table. */ |
538 | if (ofproto->ofproto_class->meter_get_features) { | |
539 | ofproto->ofproto_class->meter_get_features(ofproto, | |
540 | &ofproto->meter_features); | |
541 | } else { | |
542 | memset(&ofproto->meter_features, 0, sizeof ofproto->meter_features); | |
543 | } | |
544 | ofproto->meters = xzalloc((ofproto->meter_features.max_meters + 1) | |
545 | * sizeof(struct meter *)); | |
546 | ||
abe529af | 547 | *ofprotop = ofproto; |
064af421 BP |
548 | return 0; |
549 | } | |
550 | ||
91858960 BP |
551 | /* Must be called (only) by an ofproto implementation in its constructor |
552 | * function. See the large comment on 'construct' in struct ofproto_class for | |
553 | * details. */ | |
0f5f95a9 BP |
554 | void |
555 | ofproto_init_tables(struct ofproto *ofproto, int n_tables) | |
556 | { | |
557 | struct oftable *table; | |
558 | ||
cb22974d BP |
559 | ovs_assert(!ofproto->n_tables); |
560 | ovs_assert(n_tables >= 1 && n_tables <= 255); | |
0f5f95a9 BP |
561 | |
562 | ofproto->n_tables = n_tables; | |
563 | ofproto->tables = xmalloc(n_tables * sizeof *ofproto->tables); | |
564 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
565 | oftable_init(table); | |
566 | } | |
567 | } | |
568 | ||
91858960 BP |
569 | /* To be optionally called (only) by an ofproto implementation in its |
570 | * constructor function. See the large comment on 'construct' in struct | |
571 | * ofproto_class for details. | |
572 | * | |
573 | * Sets the maximum number of ports to 'max_ports'. The ofproto generic layer | |
574 | * will then ensure that actions passed into the ofproto implementation will | |
575 | * not refer to OpenFlow ports numbered 'max_ports' or higher. If this | |
576 | * function is not called, there will be no such restriction. | |
577 | * | |
578 | * Reserved ports numbered OFPP_MAX and higher are special and not subject to | |
579 | * the 'max_ports' restriction. */ | |
580 | void | |
430dbb14 | 581 | ofproto_init_max_ports(struct ofproto *ofproto, uint16_t max_ports) |
91858960 | 582 | { |
430dbb14 | 583 | ovs_assert(max_ports <= ofp_to_u16(OFPP_MAX)); |
91858960 BP |
584 | ofproto->max_ports = max_ports; |
585 | } | |
586 | ||
e825ace2 BP |
587 | uint64_t |
588 | ofproto_get_datapath_id(const struct ofproto *ofproto) | |
589 | { | |
590 | return ofproto->datapath_id; | |
591 | } | |
592 | ||
064af421 BP |
593 | void |
594 | ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id) | |
595 | { | |
596 | uint64_t old_dpid = p->datapath_id; | |
fa60c019 | 597 | p->datapath_id = datapath_id ? datapath_id : pick_datapath_id(p); |
064af421 | 598 | if (p->datapath_id != old_dpid) { |
76ce9432 BP |
599 | /* Force all active connections to reconnect, since there is no way to |
600 | * notify a controller that the datapath ID has changed. */ | |
fa05809b | 601 | ofproto_reconnect_controllers(p); |
064af421 BP |
602 | } |
603 | } | |
604 | ||
76ce9432 BP |
605 | void |
606 | ofproto_set_controllers(struct ofproto *p, | |
607 | const struct ofproto_controller *controllers, | |
1d9ffc17 | 608 | size_t n_controllers, uint32_t allowed_versions) |
76ce9432 | 609 | { |
1d9ffc17 SH |
610 | connmgr_set_controllers(p->connmgr, controllers, n_controllers, |
611 | allowed_versions); | |
064af421 BP |
612 | } |
613 | ||
31681a5d JP |
614 | void |
615 | ofproto_set_fail_mode(struct ofproto *p, enum ofproto_fail_mode fail_mode) | |
616 | { | |
19a87e36 | 617 | connmgr_set_fail_mode(p->connmgr, fail_mode); |
31681a5d JP |
618 | } |
619 | ||
fa05809b BP |
620 | /* Drops the connections between 'ofproto' and all of its controllers, forcing |
621 | * them to reconnect. */ | |
622 | void | |
623 | ofproto_reconnect_controllers(struct ofproto *ofproto) | |
624 | { | |
19a87e36 | 625 | connmgr_reconnect(ofproto->connmgr); |
917e50e1 BP |
626 | } |
627 | ||
628 | /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s | |
629 | * in-band control should guarantee access, in the same way that in-band | |
630 | * control guarantees access to OpenFlow controllers. */ | |
631 | void | |
632 | ofproto_set_extra_in_band_remotes(struct ofproto *ofproto, | |
633 | const struct sockaddr_in *extras, size_t n) | |
634 | { | |
19a87e36 | 635 | connmgr_set_extra_in_band_remotes(ofproto->connmgr, extras, n); |
917e50e1 BP |
636 | } |
637 | ||
b1da6250 BP |
638 | /* Sets the OpenFlow queue used by flows set up by in-band control on |
639 | * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control | |
640 | * flows will use the default queue. */ | |
641 | void | |
642 | ofproto_set_in_band_queue(struct ofproto *ofproto, int queue_id) | |
643 | { | |
19a87e36 | 644 | connmgr_set_in_band_queue(ofproto->connmgr, queue_id); |
b1da6250 BP |
645 | } |
646 | ||
084f5290 SH |
647 | /* Sets the number of flows at which eviction from the kernel flow table |
648 | * will occur. */ | |
649 | void | |
380f49c4 | 650 | ofproto_set_flow_eviction_threshold(unsigned threshold) |
084f5290 | 651 | { |
380f49c4 EJ |
652 | flow_eviction_threshold = MAX(OFPROTO_FLOW_EVICTION_THRESHOLD_MIN, |
653 | threshold); | |
084f5290 SH |
654 | } |
655 | ||
7155fa52 JS |
656 | /* Sets the path for handling flow misses. */ |
657 | void | |
658 | ofproto_set_flow_miss_model(unsigned model) | |
659 | { | |
660 | flow_miss_model = model; | |
661 | } | |
662 | ||
b53055f4 | 663 | /* If forward_bpdu is true, the NORMAL action will forward frames with |
8402c74b SS |
664 | * reserved (e.g. STP) destination Ethernet addresses. if forward_bpdu is false, |
665 | * the NORMAL action will drop these frames. */ | |
666 | void | |
667 | ofproto_set_forward_bpdu(struct ofproto *ofproto, bool forward_bpdu) | |
668 | { | |
669 | bool old_val = ofproto->forward_bpdu; | |
670 | ofproto->forward_bpdu = forward_bpdu; | |
671 | if (old_val != ofproto->forward_bpdu) { | |
672 | if (ofproto->ofproto_class->forward_bpdu_changed) { | |
673 | ofproto->ofproto_class->forward_bpdu_changed(ofproto); | |
674 | } | |
b53055f4 | 675 | } |
8402c74b SS |
676 | } |
677 | ||
e764773c | 678 | /* Sets the MAC aging timeout for the OFPP_NORMAL action on 'ofproto' to |
c4069512 BP |
679 | * 'idle_time', in seconds, and the maximum number of MAC table entries to |
680 | * 'max_entries'. */ | |
e764773c | 681 | void |
c4069512 BP |
682 | ofproto_set_mac_table_config(struct ofproto *ofproto, unsigned idle_time, |
683 | size_t max_entries) | |
e764773c | 684 | { |
c4069512 BP |
685 | if (ofproto->ofproto_class->set_mac_table_config) { |
686 | ofproto->ofproto_class->set_mac_table_config(ofproto, idle_time, | |
687 | max_entries); | |
e764773c BP |
688 | } |
689 | } | |
690 | ||
448a4b2f | 691 | /* Sets number of upcall handler threads. The default is |
cc86b1f8 | 692 | * (number of online cores - 2). */ |
448a4b2f AW |
693 | void |
694 | ofproto_set_n_handler_threads(unsigned limit) | |
695 | { | |
696 | if (limit) { | |
697 | n_handler_threads = limit; | |
698 | } else { | |
cc86b1f8 EJ |
699 | int n_proc = sysconf(_SC_NPROCESSORS_ONLN); |
700 | n_handler_threads = n_proc > 2 ? n_proc - 2 : 1; | |
448a4b2f AW |
701 | } |
702 | } | |
703 | ||
8b6ff729 BP |
704 | void |
705 | ofproto_set_dp_desc(struct ofproto *p, const char *dp_desc) | |
706 | { | |
707 | free(p->dp_desc); | |
708 | p->dp_desc = dp_desc ? xstrdup(dp_desc) : NULL; | |
709 | } | |
710 | ||
064af421 | 711 | int |
81e2083f | 712 | ofproto_set_snoops(struct ofproto *ofproto, const struct sset *snoops) |
064af421 | 713 | { |
19a87e36 | 714 | return connmgr_set_snoops(ofproto->connmgr, snoops); |
064af421 BP |
715 | } |
716 | ||
717 | int | |
0193b2af JG |
718 | ofproto_set_netflow(struct ofproto *ofproto, |
719 | const struct netflow_options *nf_options) | |
064af421 | 720 | { |
abe529af BP |
721 | if (nf_options && sset_is_empty(&nf_options->collectors)) { |
722 | nf_options = NULL; | |
723 | } | |
724 | ||
725 | if (ofproto->ofproto_class->set_netflow) { | |
726 | return ofproto->ofproto_class->set_netflow(ofproto, nf_options); | |
064af421 | 727 | } else { |
abe529af | 728 | return nf_options ? EOPNOTSUPP : 0; |
064af421 BP |
729 | } |
730 | } | |
731 | ||
abe529af | 732 | int |
72b06300 BP |
733 | ofproto_set_sflow(struct ofproto *ofproto, |
734 | const struct ofproto_sflow_options *oso) | |
735 | { | |
abe529af BP |
736 | if (oso && sset_is_empty(&oso->targets)) { |
737 | oso = NULL; | |
738 | } | |
72b06300 | 739 | |
abe529af BP |
740 | if (ofproto->ofproto_class->set_sflow) { |
741 | return ofproto->ofproto_class->set_sflow(ofproto, oso); | |
72b06300 | 742 | } else { |
abe529af | 743 | return oso ? EOPNOTSUPP : 0; |
72b06300 BP |
744 | } |
745 | } | |
29089a54 RL |
746 | |
747 | int | |
748 | ofproto_set_ipfix(struct ofproto *ofproto, | |
749 | const struct ofproto_ipfix_bridge_exporter_options *bo, | |
750 | const struct ofproto_ipfix_flow_exporter_options *fo, | |
751 | size_t n_fo) | |
752 | { | |
753 | if (ofproto->ofproto_class->set_ipfix) { | |
754 | return ofproto->ofproto_class->set_ipfix(ofproto, bo, fo, n_fo); | |
755 | } else { | |
756 | return (bo || fo) ? EOPNOTSUPP : 0; | |
757 | } | |
758 | } | |
40358701 GS |
759 | |
760 | void | |
761 | ofproto_set_flow_restore_wait(bool flow_restore_wait_db) | |
762 | { | |
763 | flow_restore_wait = flow_restore_wait_db; | |
764 | } | |
765 | ||
766 | bool | |
767 | ofproto_get_flow_restore_wait(void) | |
768 | { | |
769 | return flow_restore_wait; | |
770 | } | |
771 | ||
e7934396 | 772 | \f |
21f7563c JP |
773 | /* Spanning Tree Protocol (STP) configuration. */ |
774 | ||
775 | /* Configures STP on 'ofproto' using the settings defined in 's'. If | |
776 | * 's' is NULL, disables STP. | |
777 | * | |
778 | * Returns 0 if successful, otherwise a positive errno value. */ | |
779 | int | |
780 | ofproto_set_stp(struct ofproto *ofproto, | |
781 | const struct ofproto_stp_settings *s) | |
782 | { | |
783 | return (ofproto->ofproto_class->set_stp | |
784 | ? ofproto->ofproto_class->set_stp(ofproto, s) | |
785 | : EOPNOTSUPP); | |
786 | } | |
787 | ||
788 | /* Retrieves STP status of 'ofproto' and stores it in 's'. If the | |
789 | * 'enabled' member of 's' is false, then the other members are not | |
790 | * meaningful. | |
791 | * | |
792 | * Returns 0 if successful, otherwise a positive errno value. */ | |
793 | int | |
794 | ofproto_get_stp_status(struct ofproto *ofproto, | |
795 | struct ofproto_stp_status *s) | |
796 | { | |
797 | return (ofproto->ofproto_class->get_stp_status | |
798 | ? ofproto->ofproto_class->get_stp_status(ofproto, s) | |
799 | : EOPNOTSUPP); | |
800 | } | |
801 | ||
802 | /* Configures STP on 'ofp_port' of 'ofproto' using the settings defined | |
803 | * in 's'. The caller is responsible for assigning STP port numbers | |
804 | * (using the 'port_num' member in the range of 1 through 255, inclusive) | |
805 | * and ensuring there are no duplicates. If the 's' is NULL, then STP | |
806 | * is disabled on the port. | |
807 | * | |
808 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
809 | int | |
4e022ec0 | 810 | ofproto_port_set_stp(struct ofproto *ofproto, ofp_port_t ofp_port, |
21f7563c JP |
811 | const struct ofproto_port_stp_settings *s) |
812 | { | |
813 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
814 | if (!ofport) { | |
815 | VLOG_WARN("%s: cannot configure STP on nonexistent port %"PRIu16, | |
816 | ofproto->name, ofp_port); | |
817 | return ENODEV; | |
818 | } | |
819 | ||
820 | return (ofproto->ofproto_class->set_stp_port | |
821 | ? ofproto->ofproto_class->set_stp_port(ofport, s) | |
822 | : EOPNOTSUPP); | |
823 | } | |
824 | ||
825 | /* Retrieves STP port status of 'ofp_port' on 'ofproto' and stores it in | |
826 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
827 | * are not meaningful. | |
828 | * | |
829 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
830 | int | |
4e022ec0 | 831 | ofproto_port_get_stp_status(struct ofproto *ofproto, ofp_port_t ofp_port, |
21f7563c JP |
832 | struct ofproto_port_stp_status *s) |
833 | { | |
834 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
835 | if (!ofport) { | |
b0a5c43b JP |
836 | VLOG_WARN_RL(&rl, "%s: cannot get STP status on nonexistent " |
837 | "port %"PRIu16, ofproto->name, ofp_port); | |
21f7563c JP |
838 | return ENODEV; |
839 | } | |
840 | ||
841 | return (ofproto->ofproto_class->get_stp_port_status | |
842 | ? ofproto->ofproto_class->get_stp_port_status(ofport, s) | |
843 | : EOPNOTSUPP); | |
844 | } | |
845 | \f | |
8b36f51e EJ |
846 | /* Queue DSCP configuration. */ |
847 | ||
848 | /* Registers meta-data associated with the 'n_qdscp' Qualities of Service | |
849 | * 'queues' attached to 'ofport'. This data is not intended to be sufficient | |
850 | * to implement QoS. Instead, it is used to implement features which require | |
851 | * knowledge of what queues exist on a port, and some basic information about | |
852 | * them. | |
853 | * | |
854 | * Returns 0 if successful, otherwise a positive errno value. */ | |
855 | int | |
4e022ec0 | 856 | ofproto_port_set_queues(struct ofproto *ofproto, ofp_port_t ofp_port, |
8b36f51e EJ |
857 | const struct ofproto_port_queue *queues, |
858 | size_t n_queues) | |
859 | { | |
860 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
861 | ||
862 | if (!ofport) { | |
863 | VLOG_WARN("%s: cannot set queues on nonexistent port %"PRIu16, | |
864 | ofproto->name, ofp_port); | |
865 | return ENODEV; | |
866 | } | |
867 | ||
868 | return (ofproto->ofproto_class->set_queues | |
869 | ? ofproto->ofproto_class->set_queues(ofport, queues, n_queues) | |
870 | : EOPNOTSUPP); | |
871 | } | |
872 | \f | |
e7934396 BP |
873 | /* Connectivity Fault Management configuration. */ |
874 | ||
892815f5 | 875 | /* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */ |
e7934396 | 876 | void |
4e022ec0 | 877 | ofproto_port_clear_cfm(struct ofproto *ofproto, ofp_port_t ofp_port) |
e7934396 | 878 | { |
abe529af BP |
879 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
880 | if (ofport && ofproto->ofproto_class->set_cfm) { | |
a5610457 | 881 | ofproto->ofproto_class->set_cfm(ofport, NULL); |
e7934396 BP |
882 | } |
883 | } | |
72b06300 | 884 | |
892815f5 | 885 | /* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes |
93b8df38 EJ |
886 | * basic configuration from the configuration members in 'cfm', and the remote |
887 | * maintenance point ID from remote_mpid. Ignores the statistics members of | |
888 | * 'cfm'. | |
e7934396 | 889 | * |
892815f5 | 890 | * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */ |
e7934396 | 891 | void |
4e022ec0 | 892 | ofproto_port_set_cfm(struct ofproto *ofproto, ofp_port_t ofp_port, |
a5610457 | 893 | const struct cfm_settings *s) |
e7934396 BP |
894 | { |
895 | struct ofport *ofport; | |
abe529af | 896 | int error; |
e7934396 | 897 | |
abe529af | 898 | ofport = ofproto_get_port(ofproto, ofp_port); |
e7934396 | 899 | if (!ofport) { |
892815f5 BP |
900 | VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16, |
901 | ofproto->name, ofp_port); | |
e7934396 BP |
902 | return; |
903 | } | |
904 | ||
93b8df38 EJ |
905 | /* XXX: For configuration simplicity, we only support one remote_mpid |
906 | * outside of the CFM module. It's not clear if this is the correct long | |
907 | * term solution or not. */ | |
abe529af | 908 | error = (ofproto->ofproto_class->set_cfm |
a5610457 | 909 | ? ofproto->ofproto_class->set_cfm(ofport, s) |
abe529af BP |
910 | : EOPNOTSUPP); |
911 | if (error) { | |
912 | VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed (%s)", | |
913 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
10a89ef0 | 914 | ovs_strerror(error)); |
e7934396 | 915 | } |
e7934396 | 916 | } |
e7934396 | 917 | |
ccc09689 EJ |
918 | /* Configures BFD on 'ofp_port' in 'ofproto'. This function has no effect if |
919 | * 'ofproto' does not have a port 'ofp_port'. */ | |
920 | void | |
4e022ec0 | 921 | ofproto_port_set_bfd(struct ofproto *ofproto, ofp_port_t ofp_port, |
ccc09689 EJ |
922 | const struct smap *cfg) |
923 | { | |
924 | struct ofport *ofport; | |
925 | int error; | |
926 | ||
927 | ofport = ofproto_get_port(ofproto, ofp_port); | |
928 | if (!ofport) { | |
929 | VLOG_WARN("%s: cannot configure bfd on nonexistent port %"PRIu16, | |
930 | ofproto->name, ofp_port); | |
e8999bdc | 931 | return; |
ccc09689 EJ |
932 | } |
933 | ||
934 | error = (ofproto->ofproto_class->set_bfd | |
935 | ? ofproto->ofproto_class->set_bfd(ofport, cfg) | |
936 | : EOPNOTSUPP); | |
937 | if (error) { | |
938 | VLOG_WARN("%s: bfd configuration on port %"PRIu16" (%s) failed (%s)", | |
939 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
10a89ef0 | 940 | ovs_strerror(error)); |
ccc09689 EJ |
941 | } |
942 | } | |
943 | ||
944 | /* Populates 'status' with key value pairs indicating the status of the BFD | |
945 | * session on 'ofp_port'. This information is intended to be populated in the | |
946 | * OVS database. Has no effect if 'ofp_port' is not na OpenFlow port in | |
947 | * 'ofproto'. */ | |
948 | int | |
4e022ec0 | 949 | ofproto_port_get_bfd_status(struct ofproto *ofproto, ofp_port_t ofp_port, |
ccc09689 EJ |
950 | struct smap *status) |
951 | { | |
952 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
953 | return (ofport && ofproto->ofproto_class->get_bfd_status | |
954 | ? ofproto->ofproto_class->get_bfd_status(ofport, status) | |
955 | : EOPNOTSUPP); | |
956 | } | |
957 | ||
fa066f01 BP |
958 | /* Checks the status of LACP negotiation for 'ofp_port' within ofproto. |
959 | * Returns 1 if LACP partner information for 'ofp_port' is up-to-date, | |
960 | * 0 if LACP partner information is not current (generally indicating a | |
961 | * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */ | |
962 | int | |
4e022ec0 | 963 | ofproto_port_is_lacp_current(struct ofproto *ofproto, ofp_port_t ofp_port) |
fa066f01 | 964 | { |
abe529af BP |
965 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
966 | return (ofport && ofproto->ofproto_class->port_is_lacp_current | |
967 | ? ofproto->ofproto_class->port_is_lacp_current(ofport) | |
fa066f01 | 968 | : -1); |
e7934396 | 969 | } |
e7934396 | 970 | \f |
fa066f01 | 971 | /* Bundles. */ |
e7934396 | 972 | |
abe529af BP |
973 | /* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'. |
974 | * A bundle is the same concept as a Port in OVSDB, that is, it consists of one | |
975 | * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN | |
976 | * configuration plus, if there is more than one slave, a bonding | |
977 | * configuration. | |
978 | * | |
979 | * If 'aux' is already registered then this function updates its configuration | |
980 | * to 's'. Otherwise, this function registers a new bundle. | |
981 | * | |
982 | * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL | |
983 | * port. */ | |
984 | int | |
985 | ofproto_bundle_register(struct ofproto *ofproto, void *aux, | |
986 | const struct ofproto_bundle_settings *s) | |
fa066f01 | 987 | { |
abe529af BP |
988 | return (ofproto->ofproto_class->bundle_set |
989 | ? ofproto->ofproto_class->bundle_set(ofproto, aux, s) | |
990 | : EOPNOTSUPP); | |
fa066f01 BP |
991 | } |
992 | ||
abe529af BP |
993 | /* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'. |
994 | * If no such bundle has been registered, this has no effect. */ | |
995 | int | |
996 | ofproto_bundle_unregister(struct ofproto *ofproto, void *aux) | |
e7934396 | 997 | { |
abe529af | 998 | return ofproto_bundle_register(ofproto, aux, NULL); |
e7934396 | 999 | } |
fa066f01 | 1000 | |
e7934396 | 1001 | \f |
abe529af BP |
1002 | /* Registers a mirror associated with client data pointer 'aux' in 'ofproto'. |
1003 | * If 'aux' is already registered then this function updates its configuration | |
c06bba01 | 1004 | * to 's'. Otherwise, this function registers a new mirror. */ |
abe529af BP |
1005 | int |
1006 | ofproto_mirror_register(struct ofproto *ofproto, void *aux, | |
1007 | const struct ofproto_mirror_settings *s) | |
064af421 | 1008 | { |
abe529af BP |
1009 | return (ofproto->ofproto_class->mirror_set |
1010 | ? ofproto->ofproto_class->mirror_set(ofproto, aux, s) | |
1011 | : EOPNOTSUPP); | |
064af421 BP |
1012 | } |
1013 | ||
abe529af BP |
1014 | /* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'. |
1015 | * If no mirror has been registered, this has no effect. */ | |
1016 | int | |
1017 | ofproto_mirror_unregister(struct ofproto *ofproto, void *aux) | |
064af421 | 1018 | { |
abe529af | 1019 | return ofproto_mirror_register(ofproto, aux, NULL); |
064af421 BP |
1020 | } |
1021 | ||
9d24de3b JP |
1022 | /* Retrieves statistics from mirror associated with client data pointer |
1023 | * 'aux' in 'ofproto'. Stores packet and byte counts in 'packets' and | |
1024 | * 'bytes', respectively. If a particular counters is not supported, | |
1025 | * the appropriate argument is set to UINT64_MAX. */ | |
1026 | int | |
1027 | ofproto_mirror_get_stats(struct ofproto *ofproto, void *aux, | |
1028 | uint64_t *packets, uint64_t *bytes) | |
1029 | { | |
1030 | if (!ofproto->ofproto_class->mirror_get_stats) { | |
1031 | *packets = *bytes = UINT64_MAX; | |
1032 | return EOPNOTSUPP; | |
1033 | } | |
1034 | ||
1035 | return ofproto->ofproto_class->mirror_get_stats(ofproto, aux, | |
1036 | packets, bytes); | |
1037 | } | |
1038 | ||
abe529af BP |
1039 | /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on |
1040 | * which all packets are flooded, instead of using MAC learning. If | |
1041 | * 'flood_vlans' is NULL, then MAC learning applies to all VLANs. | |
1042 | * | |
1043 | * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL | |
1044 | * port. */ | |
1045 | int | |
1046 | ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans) | |
abdfe474 | 1047 | { |
abe529af BP |
1048 | return (ofproto->ofproto_class->set_flood_vlans |
1049 | ? ofproto->ofproto_class->set_flood_vlans(ofproto, flood_vlans) | |
1050 | : EOPNOTSUPP); | |
abdfe474 JP |
1051 | } |
1052 | ||
abe529af BP |
1053 | /* Returns true if 'aux' is a registered bundle that is currently in use as the |
1054 | * output for a mirror. */ | |
1055 | bool | |
b4affc74 | 1056 | ofproto_is_mirror_output_bundle(const struct ofproto *ofproto, void *aux) |
abe529af BP |
1057 | { |
1058 | return (ofproto->ofproto_class->is_mirror_output_bundle | |
1059 | ? ofproto->ofproto_class->is_mirror_output_bundle(ofproto, aux) | |
1060 | : false); | |
1061 | } | |
1062 | \f | |
254750ce BP |
1063 | /* Configuration of OpenFlow tables. */ |
1064 | ||
1065 | /* Returns the number of OpenFlow tables in 'ofproto'. */ | |
1066 | int | |
1067 | ofproto_get_n_tables(const struct ofproto *ofproto) | |
1068 | { | |
1069 | return ofproto->n_tables; | |
1070 | } | |
1071 | ||
1072 | /* Configures the OpenFlow table in 'ofproto' with id 'table_id' with the | |
1073 | * settings from 's'. 'table_id' must be in the range 0 through the number of | |
1074 | * OpenFlow tables in 'ofproto' minus 1, inclusive. | |
1075 | * | |
1076 | * For read-only tables, only the name may be configured. */ | |
1077 | void | |
1078 | ofproto_configure_table(struct ofproto *ofproto, int table_id, | |
1079 | const struct ofproto_table_settings *s) | |
1080 | { | |
1081 | struct oftable *table; | |
1082 | ||
cb22974d | 1083 | ovs_assert(table_id >= 0 && table_id < ofproto->n_tables); |
254750ce BP |
1084 | table = &ofproto->tables[table_id]; |
1085 | ||
1086 | oftable_set_name(table, s->name); | |
1087 | ||
1088 | if (table->flags & OFTABLE_READONLY) { | |
1089 | return; | |
1090 | } | |
1091 | ||
1092 | if (s->groups) { | |
1093 | oftable_enable_eviction(table, s->groups, s->n_groups); | |
1094 | } else { | |
1095 | oftable_disable_eviction(table); | |
1096 | } | |
1097 | ||
1098 | table->max_flows = s->max_flows; | |
0b4f2078 | 1099 | ovs_rwlock_rdlock(&table->cls.rwlock); |
254750ce BP |
1100 | if (classifier_count(&table->cls) > table->max_flows |
1101 | && table->eviction_fields) { | |
1102 | /* 'table' contains more flows than allowed. We might not be able to | |
1103 | * evict them right away because of the asynchronous nature of flow | |
1104 | * table changes. Schedule eviction for later. */ | |
1105 | switch (ofproto->state) { | |
1106 | case S_OPENFLOW: | |
1107 | ofproto->state = S_EVICT; | |
1108 | break; | |
1109 | case S_EVICT: | |
1110 | case S_FLUSH: | |
1111 | /* We're already deleting flows, nothing more to do. */ | |
1112 | break; | |
1113 | } | |
1114 | } | |
0b4f2078 | 1115 | ovs_rwlock_unlock(&table->cls.rwlock); |
254750ce BP |
1116 | } |
1117 | \f | |
81e2083f BP |
1118 | bool |
1119 | ofproto_has_snoops(const struct ofproto *ofproto) | |
1120 | { | |
1121 | return connmgr_has_snoops(ofproto->connmgr); | |
1122 | } | |
1123 | ||
064af421 | 1124 | void |
81e2083f | 1125 | ofproto_get_snoops(const struct ofproto *ofproto, struct sset *snoops) |
064af421 | 1126 | { |
19a87e36 | 1127 | connmgr_get_snoops(ofproto->connmgr, snoops); |
064af421 BP |
1128 | } |
1129 | ||
8037acb4 BP |
1130 | /* Deletes 'rule' from 'cls' within 'ofproto'. |
1131 | * | |
b74cb5d8 BP |
1132 | * Within an ofproto implementation, this function allows an ofproto |
1133 | * implementation to destroy any rules that remain when its ->destruct() | |
1134 | * function is called. This function is not suitable for use elsewhere in an | |
1135 | * ofproto implementation. | |
1136 | * | |
1137 | * This function is also used internally in ofproto.c. | |
1138 | * | |
1139 | * This function implements steps 4.4 and 4.5 in the section titled "Rule Life | |
1140 | * Cycle" in ofproto-provider.h. | |
1141 | ||
8037acb4 BP |
1142 | * The 'cls' argument is redundant (it is &ofproto->tables[rule->table_id].cls) |
1143 | * but it allows Clang to do better checking. */ | |
b74cb5d8 BP |
1144 | void |
1145 | ofproto_rule_delete(struct ofproto *ofproto, struct classifier *cls, | |
8037acb4 BP |
1146 | struct rule *rule) |
1147 | OVS_REQ_WRLOCK(cls->rwlock) | |
7ee20df1 | 1148 | { |
7ee20df1 | 1149 | struct ofopgroup *group; |
8037acb4 BP |
1150 | |
1151 | ovs_assert(!rule->pending); | |
1152 | ovs_assert(cls == &ofproto->tables[rule->table_id].cls); | |
1153 | ||
1154 | group = ofopgroup_create_unattached(ofproto); | |
1155 | ofoperation_create(group, rule, OFOPERATION_DELETE, OFPRR_DELETE); | |
c7c9a7c8 | 1156 | ovs_mutex_lock(&rule->mutex); |
8037acb4 BP |
1157 | oftable_remove_rule__(ofproto, cls, rule); |
1158 | ofproto->ofproto_class->rule_delete(rule); | |
1159 | ofopgroup_submit(group); | |
1160 | } | |
1161 | ||
1162 | static void | |
1163 | ofproto_flush__(struct ofproto *ofproto) | |
1164 | { | |
d0918789 | 1165 | struct oftable *table; |
7ee20df1 BP |
1166 | |
1167 | if (ofproto->ofproto_class->flush) { | |
1168 | ofproto->ofproto_class->flush(ofproto); | |
1169 | } | |
1170 | ||
b772ded8 | 1171 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
7ee20df1 BP |
1172 | struct rule *rule, *next_rule; |
1173 | struct cls_cursor cursor; | |
1174 | ||
5c67e4af BP |
1175 | if (table->flags & OFTABLE_HIDDEN) { |
1176 | continue; | |
1177 | } | |
1178 | ||
0b4f2078 | 1179 | ovs_rwlock_wrlock(&table->cls.rwlock); |
d0918789 | 1180 | cls_cursor_init(&cursor, &table->cls, NULL); |
7ee20df1 BP |
1181 | CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) { |
1182 | if (!rule->pending) { | |
b74cb5d8 | 1183 | ofproto_rule_delete(ofproto, &table->cls, rule); |
7ee20df1 BP |
1184 | } |
1185 | } | |
0b4f2078 | 1186 | ovs_rwlock_unlock(&table->cls.rwlock); |
7ee20df1 | 1187 | } |
7ee20df1 BP |
1188 | } |
1189 | ||
7395c052 NZ |
1190 | static void delete_group(struct ofproto *ofproto, uint32_t group_id); |
1191 | ||
abe529af BP |
1192 | static void |
1193 | ofproto_destroy__(struct ofproto *ofproto) | |
1194 | { | |
d0918789 | 1195 | struct oftable *table; |
6c1491fb | 1196 | |
cb22974d BP |
1197 | ovs_assert(list_is_empty(&ofproto->pending)); |
1198 | ovs_assert(!ofproto->n_pending); | |
7ee20df1 | 1199 | |
35412852 BP |
1200 | destroy_rule_executes(ofproto); |
1201 | guarded_list_destroy(&ofproto->rule_executes); | |
1202 | ||
7395c052 NZ |
1203 | delete_group(ofproto, OFPG_ALL); |
1204 | ovs_rwlock_destroy(&ofproto->groups_rwlock); | |
1205 | hmap_destroy(&ofproto->groups); | |
1206 | ||
abe529af | 1207 | connmgr_destroy(ofproto->connmgr); |
fa066f01 | 1208 | |
abe529af BP |
1209 | hmap_remove(&all_ofprotos, &ofproto->hmap_node); |
1210 | free(ofproto->name); | |
955a7127 | 1211 | free(ofproto->type); |
abe529af BP |
1212 | free(ofproto->mfr_desc); |
1213 | free(ofproto->hw_desc); | |
1214 | free(ofproto->sw_desc); | |
1215 | free(ofproto->serial_desc); | |
1216 | free(ofproto->dp_desc); | |
abe529af BP |
1217 | hmap_destroy(&ofproto->ports); |
1218 | shash_destroy(&ofproto->port_by_name); | |
e1b1d06a JP |
1219 | bitmap_free(ofproto->ofp_port_ids); |
1220 | simap_destroy(&ofproto->ofp_requests); | |
6c1491fb | 1221 | |
b772ded8 | 1222 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
d0918789 | 1223 | oftable_destroy(table); |
6c1491fb BP |
1224 | } |
1225 | free(ofproto->tables); | |
fa066f01 | 1226 | |
7ee20df1 BP |
1227 | hmap_destroy(&ofproto->deletions); |
1228 | ||
52a90c29 BP |
1229 | free(ofproto->vlan_bitmap); |
1230 | ||
abe529af BP |
1231 | ofproto->ofproto_class->dealloc(ofproto); |
1232 | } | |
fa066f01 | 1233 | |
064af421 BP |
1234 | void |
1235 | ofproto_destroy(struct ofproto *p) | |
1236 | { | |
ca0f572c | 1237 | struct ofport *ofport, *next_ofport; |
064af421 BP |
1238 | |
1239 | if (!p) { | |
1240 | return; | |
1241 | } | |
1242 | ||
717de9ff JR |
1243 | if (p->meters) { |
1244 | meter_delete(p, 1, p->meter_features.max_meters); | |
1245 | p->meter_features.max_meters = 0; | |
1246 | free(p->meters); | |
1247 | p->meters = NULL; | |
1248 | } | |
1249 | ||
7ee20df1 | 1250 | ofproto_flush__(p); |
4e8e4213 | 1251 | HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) { |
abe529af | 1252 | ofport_destroy(ofport); |
064af421 | 1253 | } |
064af421 | 1254 | |
abe529af BP |
1255 | p->ofproto_class->destruct(p); |
1256 | ofproto_destroy__(p); | |
064af421 BP |
1257 | } |
1258 | ||
abe529af BP |
1259 | /* Destroys the datapath with the respective 'name' and 'type'. With the Linux |
1260 | * kernel datapath, for example, this destroys the datapath in the kernel, and | |
1261 | * with the netdev-based datapath, it tears down the data structures that | |
1262 | * represent the datapath. | |
1263 | * | |
1264 | * The datapath should not be currently open as an ofproto. */ | |
064af421 | 1265 | int |
abe529af | 1266 | ofproto_delete(const char *name, const char *type) |
064af421 | 1267 | { |
abe529af BP |
1268 | const struct ofproto_class *class = ofproto_class_find__(type); |
1269 | return (!class ? EAFNOSUPPORT | |
1270 | : !class->del ? EACCES | |
1271 | : class->del(type, name)); | |
064af421 BP |
1272 | } |
1273 | ||
e9e28be3 BP |
1274 | static void |
1275 | process_port_change(struct ofproto *ofproto, int error, char *devname) | |
1276 | { | |
1277 | if (error == ENOBUFS) { | |
1278 | reinit_ports(ofproto); | |
1279 | } else if (!error) { | |
1280 | update_port(ofproto, devname); | |
1281 | free(devname); | |
1282 | } | |
1283 | } | |
1284 | ||
11a574a7 JP |
1285 | int |
1286 | ofproto_type_run(const char *datapath_type) | |
1287 | { | |
1288 | const struct ofproto_class *class; | |
1289 | int error; | |
1290 | ||
1291 | datapath_type = ofproto_normalize_type(datapath_type); | |
1292 | class = ofproto_class_find__(datapath_type); | |
1293 | ||
1294 | error = class->type_run ? class->type_run(datapath_type) : 0; | |
1295 | if (error && error != EAGAIN) { | |
1296 | VLOG_ERR_RL(&rl, "%s: type_run failed (%s)", | |
10a89ef0 | 1297 | datapath_type, ovs_strerror(error)); |
11a574a7 JP |
1298 | } |
1299 | return error; | |
1300 | } | |
1301 | ||
1302 | int | |
1303 | ofproto_type_run_fast(const char *datapath_type) | |
1304 | { | |
1305 | const struct ofproto_class *class; | |
1306 | int error; | |
1307 | ||
1308 | datapath_type = ofproto_normalize_type(datapath_type); | |
1309 | class = ofproto_class_find__(datapath_type); | |
1310 | ||
1311 | error = class->type_run_fast ? class->type_run_fast(datapath_type) : 0; | |
1312 | if (error && error != EAGAIN) { | |
1313 | VLOG_ERR_RL(&rl, "%s: type_run_fast failed (%s)", | |
10a89ef0 | 1314 | datapath_type, ovs_strerror(error)); |
11a574a7 JP |
1315 | } |
1316 | return error; | |
1317 | } | |
1318 | ||
1319 | void | |
1320 | ofproto_type_wait(const char *datapath_type) | |
1321 | { | |
1322 | const struct ofproto_class *class; | |
1323 | ||
1324 | datapath_type = ofproto_normalize_type(datapath_type); | |
1325 | class = ofproto_class_find__(datapath_type); | |
1326 | ||
1327 | if (class->type_wait) { | |
1328 | class->type_wait(datapath_type); | |
1329 | } | |
1330 | } | |
1331 | ||
064af421 | 1332 | int |
abe529af | 1333 | ofproto_run(struct ofproto *p) |
064af421 | 1334 | { |
7436ed80 BP |
1335 | struct sset changed_netdevs; |
1336 | const char *changed_netdev; | |
031d8bff | 1337 | struct ofport *ofport; |
064af421 | 1338 | int error; |
064af421 | 1339 | |
abe529af | 1340 | error = p->ofproto_class->run(p); |
5fcc0d00 | 1341 | if (error && error != EAGAIN) { |
10a89ef0 | 1342 | VLOG_ERR_RL(&rl, "%s: run failed (%s)", p->name, ovs_strerror(error)); |
149f577a JG |
1343 | } |
1344 | ||
35412852 BP |
1345 | run_rule_executes(p); |
1346 | ||
448c2fa8 EJ |
1347 | /* Restore the eviction group heap invariant occasionally. */ |
1348 | if (p->eviction_group_timer < time_msec()) { | |
1349 | size_t i; | |
1350 | ||
1351 | p->eviction_group_timer = time_msec() + 1000; | |
1352 | ||
1353 | for (i = 0; i < p->n_tables; i++) { | |
1354 | struct oftable *table = &p->tables[i]; | |
1355 | struct eviction_group *evg; | |
1356 | struct cls_cursor cursor; | |
448c2fa8 EJ |
1357 | struct rule *rule; |
1358 | ||
1359 | if (!table->eviction_fields) { | |
1360 | continue; | |
1361 | } | |
1362 | ||
1363 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { | |
1364 | heap_rebuild(&evg->rules); | |
1365 | } | |
1366 | ||
1367 | ovs_rwlock_rdlock(&table->cls.rwlock); | |
c4ea31b1 | 1368 | cls_cursor_init(&cursor, &table->cls, NULL); |
448c2fa8 EJ |
1369 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
1370 | if (!rule->eviction_group | |
1371 | && (rule->idle_timeout || rule->hard_timeout)) { | |
1372 | eviction_group_add_rule(rule); | |
1373 | } | |
1374 | } | |
1375 | ovs_rwlock_unlock(&table->cls.rwlock); | |
1376 | } | |
1377 | } | |
1378 | ||
5bf0e941 | 1379 | if (p->ofproto_class->port_poll) { |
7436ed80 BP |
1380 | char *devname; |
1381 | ||
5bf0e941 BP |
1382 | while ((error = p->ofproto_class->port_poll(p, &devname)) != EAGAIN) { |
1383 | process_port_change(p, error, devname); | |
064af421 | 1384 | } |
e9e28be3 | 1385 | } |
031d8bff | 1386 | |
7436ed80 BP |
1387 | /* Update OpenFlow port status for any port whose netdev has changed. |
1388 | * | |
1389 | * Refreshing a given 'ofport' can cause an arbitrary ofport to be | |
1390 | * destroyed, so it's not safe to update ports directly from the | |
1391 | * HMAP_FOR_EACH loop, or even to use HMAP_FOR_EACH_SAFE. Instead, we | |
1392 | * need this two-phase approach. */ | |
1393 | sset_init(&changed_netdevs); | |
031d8bff EJ |
1394 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { |
1395 | unsigned int change_seq = netdev_change_seq(ofport->netdev); | |
1396 | if (ofport->change_seq != change_seq) { | |
1397 | ofport->change_seq = change_seq; | |
7436ed80 | 1398 | sset_add(&changed_netdevs, netdev_get_name(ofport->netdev)); |
031d8bff | 1399 | } |
064af421 | 1400 | } |
7436ed80 BP |
1401 | SSET_FOR_EACH (changed_netdev, &changed_netdevs) { |
1402 | update_port(p, changed_netdev); | |
1403 | } | |
1404 | sset_destroy(&changed_netdevs); | |
064af421 | 1405 | |
7ee20df1 BP |
1406 | switch (p->state) { |
1407 | case S_OPENFLOW: | |
1408 | connmgr_run(p->connmgr, handle_openflow); | |
1409 | break; | |
1410 | ||
254750ce BP |
1411 | case S_EVICT: |
1412 | connmgr_run(p->connmgr, NULL); | |
1413 | ofproto_evict(p); | |
1414 | if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) { | |
1415 | p->state = S_OPENFLOW; | |
1416 | } | |
1417 | break; | |
1418 | ||
7ee20df1 BP |
1419 | case S_FLUSH: |
1420 | connmgr_run(p->connmgr, NULL); | |
1421 | ofproto_flush__(p); | |
1422 | if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) { | |
1423 | connmgr_flushed(p->connmgr); | |
1424 | p->state = S_OPENFLOW; | |
1425 | } | |
1426 | break; | |
1427 | ||
1428 | default: | |
1429 | NOT_REACHED(); | |
1430 | } | |
064af421 | 1431 | |
a5b8d268 BP |
1432 | if (time_msec() >= p->next_op_report) { |
1433 | long long int ago = (time_msec() - p->first_op) / 1000; | |
1434 | long long int interval = (p->last_op - p->first_op) / 1000; | |
1435 | struct ds s; | |
1436 | ||
1437 | ds_init(&s); | |
1438 | ds_put_format(&s, "%d flow_mods ", | |
1439 | p->n_add + p->n_delete + p->n_modify); | |
1440 | if (interval == ago) { | |
1441 | ds_put_format(&s, "in the last %lld s", ago); | |
1442 | } else if (interval) { | |
1443 | ds_put_format(&s, "in the %lld s starting %lld s ago", | |
1444 | interval, ago); | |
1445 | } else { | |
1446 | ds_put_format(&s, "%lld s ago", ago); | |
1447 | } | |
1448 | ||
1449 | ds_put_cstr(&s, " ("); | |
1450 | if (p->n_add) { | |
1451 | ds_put_format(&s, "%d adds, ", p->n_add); | |
1452 | } | |
1453 | if (p->n_delete) { | |
1454 | ds_put_format(&s, "%d deletes, ", p->n_delete); | |
1455 | } | |
1456 | if (p->n_modify) { | |
1457 | ds_put_format(&s, "%d modifications, ", p->n_modify); | |
1458 | } | |
1459 | s.length -= 2; | |
1460 | ds_put_char(&s, ')'); | |
1461 | ||
fbfa2911 | 1462 | VLOG_INFO("%s: %s", p->name, ds_cstr(&s)); |
a5b8d268 BP |
1463 | ds_destroy(&s); |
1464 | ||
1465 | p->n_add = p->n_delete = p->n_modify = 0; | |
1466 | p->next_op_report = LLONG_MAX; | |
1467 | } | |
1468 | ||
5fcc0d00 BP |
1469 | return error; |
1470 | } | |
1471 | ||
1472 | /* Performs periodic activity required by 'ofproto' that needs to be done | |
1473 | * with the least possible latency. | |
1474 | * | |
1475 | * It makes sense to call this function a couple of times per poll loop, to | |
1476 | * provide a significant performance boost on some benchmarks with the | |
1477 | * ofproto-dpif implementation. */ | |
1478 | int | |
1479 | ofproto_run_fast(struct ofproto *p) | |
1480 | { | |
1481 | int error; | |
1482 | ||
1483 | error = p->ofproto_class->run_fast ? p->ofproto_class->run_fast(p) : 0; | |
1484 | if (error && error != EAGAIN) { | |
1485 | VLOG_ERR_RL(&rl, "%s: fastpath run failed (%s)", | |
10a89ef0 | 1486 | p->name, ovs_strerror(error)); |
5fcc0d00 BP |
1487 | } |
1488 | return error; | |
064af421 BP |
1489 | } |
1490 | ||
1491 | void | |
1492 | ofproto_wait(struct ofproto *p) | |
1493 | { | |
031d8bff EJ |
1494 | struct ofport *ofport; |
1495 | ||
abe529af | 1496 | p->ofproto_class->wait(p); |
5bf0e941 BP |
1497 | if (p->ofproto_class->port_poll_wait) { |
1498 | p->ofproto_class->port_poll_wait(p); | |
e7934396 | 1499 | } |
031d8bff EJ |
1500 | |
1501 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
1502 | if (ofport->change_seq != netdev_change_seq(ofport->netdev)) { | |
1503 | poll_immediate_wake(); | |
1504 | } | |
1505 | } | |
7ee20df1 BP |
1506 | |
1507 | switch (p->state) { | |
1508 | case S_OPENFLOW: | |
1509 | connmgr_wait(p->connmgr, true); | |
1510 | break; | |
1511 | ||
254750ce | 1512 | case S_EVICT: |
7ee20df1 BP |
1513 | case S_FLUSH: |
1514 | connmgr_wait(p->connmgr, false); | |
1515 | if (list_is_empty(&p->pending) && hmap_is_empty(&p->deletions)) { | |
1516 | poll_immediate_wake(); | |
1517 | } | |
1518 | break; | |
1519 | } | |
064af421 BP |
1520 | } |
1521 | ||
064af421 BP |
1522 | bool |
1523 | ofproto_is_alive(const struct ofproto *p) | |
1524 | { | |
19a87e36 | 1525 | return connmgr_has_controllers(p->connmgr); |
064af421 BP |
1526 | } |
1527 | ||
0d085684 BP |
1528 | /* Adds some memory usage statistics for 'ofproto' into 'usage', for use with |
1529 | * memory_report(). */ | |
1530 | void | |
1531 | ofproto_get_memory_usage(const struct ofproto *ofproto, struct simap *usage) | |
1532 | { | |
1533 | const struct oftable *table; | |
1534 | unsigned int n_rules; | |
1535 | ||
1536 | simap_increase(usage, "ports", hmap_count(&ofproto->ports)); | |
1537 | simap_increase(usage, "ops", | |
1538 | ofproto->n_pending + hmap_count(&ofproto->deletions)); | |
1539 | ||
1540 | n_rules = 0; | |
1541 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
0b4f2078 | 1542 | ovs_rwlock_rdlock(&table->cls.rwlock); |
0d085684 | 1543 | n_rules += classifier_count(&table->cls); |
0b4f2078 | 1544 | ovs_rwlock_unlock(&table->cls.rwlock); |
0d085684 BP |
1545 | } |
1546 | simap_increase(usage, "rules", n_rules); | |
1547 | ||
1548 | if (ofproto->ofproto_class->get_memory_usage) { | |
1549 | ofproto->ofproto_class->get_memory_usage(ofproto, usage); | |
1550 | } | |
1551 | ||
1552 | connmgr_get_memory_usage(ofproto->connmgr, usage); | |
1553 | } | |
1554 | ||
bffc0589 | 1555 | void |
2cdcb898 | 1556 | ofproto_get_ofproto_controller_info(const struct ofproto *ofproto, |
bffc0589 AE |
1557 | struct shash *info) |
1558 | { | |
19a87e36 | 1559 | connmgr_get_controller_info(ofproto->connmgr, info); |
bffc0589 AE |
1560 | } |
1561 | ||
1562 | void | |
1563 | ofproto_free_ofproto_controller_info(struct shash *info) | |
1564 | { | |
72ba2ed3 | 1565 | connmgr_free_controller_info(info); |
bffc0589 AE |
1566 | } |
1567 | ||
b5827b24 BP |
1568 | /* Makes a deep copy of 'old' into 'port'. */ |
1569 | void | |
1570 | ofproto_port_clone(struct ofproto_port *port, const struct ofproto_port *old) | |
1571 | { | |
1572 | port->name = xstrdup(old->name); | |
1573 | port->type = xstrdup(old->type); | |
1574 | port->ofp_port = old->ofp_port; | |
1575 | } | |
1576 | ||
1577 | /* Frees memory allocated to members of 'ofproto_port'. | |
3a6ccc8c | 1578 | * |
b5827b24 BP |
1579 | * Do not call this function on an ofproto_port obtained from |
1580 | * ofproto_port_dump_next(): that function retains ownership of the data in the | |
1581 | * ofproto_port. */ | |
1582 | void | |
1583 | ofproto_port_destroy(struct ofproto_port *ofproto_port) | |
1584 | { | |
1585 | free(ofproto_port->name); | |
1586 | free(ofproto_port->type); | |
1587 | } | |
1588 | ||
b5827b24 | 1589 | /* Initializes 'dump' to begin dumping the ports in an ofproto. |
3a6ccc8c | 1590 | * |
b5827b24 BP |
1591 | * This function provides no status indication. An error status for the entire |
1592 | * dump operation is provided when it is completed by calling | |
1593 | * ofproto_port_dump_done(). | |
1594 | */ | |
1595 | void | |
1596 | ofproto_port_dump_start(struct ofproto_port_dump *dump, | |
1597 | const struct ofproto *ofproto) | |
1598 | { | |
abe529af BP |
1599 | dump->ofproto = ofproto; |
1600 | dump->error = ofproto->ofproto_class->port_dump_start(ofproto, | |
1601 | &dump->state); | |
b5827b24 BP |
1602 | } |
1603 | ||
1604 | /* Attempts to retrieve another port from 'dump', which must have been created | |
1605 | * with ofproto_port_dump_start(). On success, stores a new ofproto_port into | |
1606 | * 'port' and returns true. On failure, returns false. | |
1607 | * | |
1608 | * Failure might indicate an actual error or merely that the last port has been | |
1609 | * dumped. An error status for the entire dump operation is provided when it | |
1610 | * is completed by calling ofproto_port_dump_done(). | |
1611 | * | |
1612 | * The ofproto owns the data stored in 'port'. It will remain valid until at | |
1613 | * least the next time 'dump' is passed to ofproto_port_dump_next() or | |
1614 | * ofproto_port_dump_done(). */ | |
1615 | bool | |
1616 | ofproto_port_dump_next(struct ofproto_port_dump *dump, | |
1617 | struct ofproto_port *port) | |
1618 | { | |
abe529af BP |
1619 | const struct ofproto *ofproto = dump->ofproto; |
1620 | ||
1621 | if (dump->error) { | |
1622 | return false; | |
1623 | } | |
b5827b24 | 1624 | |
abe529af BP |
1625 | dump->error = ofproto->ofproto_class->port_dump_next(ofproto, dump->state, |
1626 | port); | |
1627 | if (dump->error) { | |
1628 | ofproto->ofproto_class->port_dump_done(ofproto, dump->state); | |
1629 | return false; | |
b5827b24 | 1630 | } |
abe529af | 1631 | return true; |
b5827b24 BP |
1632 | } |
1633 | ||
1634 | /* Completes port table dump operation 'dump', which must have been created | |
1635 | * with ofproto_port_dump_start(). Returns 0 if the dump operation was | |
1636 | * error-free, otherwise a positive errno value describing the problem. */ | |
3a6ccc8c | 1637 | int |
b5827b24 | 1638 | ofproto_port_dump_done(struct ofproto_port_dump *dump) |
3a6ccc8c | 1639 | { |
abe529af BP |
1640 | const struct ofproto *ofproto = dump->ofproto; |
1641 | if (!dump->error) { | |
1642 | dump->error = ofproto->ofproto_class->port_dump_done(ofproto, | |
1643 | dump->state); | |
1644 | } | |
1645 | return dump->error == EOF ? 0 : dump->error; | |
b5827b24 BP |
1646 | } |
1647 | ||
0aeaabc8 JP |
1648 | /* Returns the type to pass to netdev_open() when a datapath of type |
1649 | * 'datapath_type' has a port of type 'port_type', for a few special | |
1650 | * cases when a netdev type differs from a port type. For example, when | |
1651 | * using the userspace datapath, a port of type "internal" needs to be | |
1652 | * opened as "tap". | |
1653 | * | |
1654 | * Returns either 'type' itself or a string literal, which must not be | |
1655 | * freed. */ | |
1656 | const char * | |
1657 | ofproto_port_open_type(const char *datapath_type, const char *port_type) | |
1658 | { | |
1659 | const struct ofproto_class *class; | |
1660 | ||
1661 | datapath_type = ofproto_normalize_type(datapath_type); | |
1662 | class = ofproto_class_find__(datapath_type); | |
1663 | if (!class) { | |
1664 | return port_type; | |
1665 | } | |
1666 | ||
1667 | return (class->port_open_type | |
1668 | ? class->port_open_type(datapath_type, port_type) | |
1669 | : port_type); | |
1670 | } | |
1671 | ||
81816a5f JP |
1672 | /* Attempts to add 'netdev' as a port on 'ofproto'. If 'ofp_portp' is |
1673 | * non-null and '*ofp_portp' is not OFPP_NONE, attempts to use that as | |
1674 | * the port's OpenFlow port number. | |
1675 | * | |
1676 | * If successful, returns 0 and sets '*ofp_portp' to the new port's | |
1677 | * OpenFlow port number (if 'ofp_portp' is non-null). On failure, | |
1678 | * returns a positive errno value and sets '*ofp_portp' to OFPP_NONE (if | |
1679 | * 'ofp_portp' is non-null). */ | |
b5827b24 BP |
1680 | int |
1681 | ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev, | |
4e022ec0 | 1682 | ofp_port_t *ofp_portp) |
b5827b24 | 1683 | { |
4e022ec0 | 1684 | ofp_port_t ofp_port = ofp_portp ? *ofp_portp : OFPP_NONE; |
3a6ccc8c BP |
1685 | int error; |
1686 | ||
e1b1d06a | 1687 | error = ofproto->ofproto_class->port_add(ofproto, netdev); |
1fa24dea | 1688 | if (!error) { |
e1b1d06a JP |
1689 | const char *netdev_name = netdev_get_name(netdev); |
1690 | ||
4e022ec0 AW |
1691 | simap_put(&ofproto->ofp_requests, netdev_name, |
1692 | ofp_to_u16(ofp_port)); | |
e1b1d06a | 1693 | update_port(ofproto, netdev_name); |
1fa24dea | 1694 | } |
b5827b24 | 1695 | if (ofp_portp) { |
e1b1d06a JP |
1696 | struct ofproto_port ofproto_port; |
1697 | ||
1698 | ofproto_port_query_by_name(ofproto, netdev_get_name(netdev), | |
1699 | &ofproto_port); | |
1700 | *ofp_portp = error ? OFPP_NONE : ofproto_port.ofp_port; | |
1701 | ofproto_port_destroy(&ofproto_port); | |
3a6ccc8c BP |
1702 | } |
1703 | return error; | |
1704 | } | |
1705 | ||
b5827b24 BP |
1706 | /* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and |
1707 | * initializes '*port' appropriately; on failure, returns a positive errno | |
1708 | * value. | |
1709 | * | |
abe529af | 1710 | * The caller owns the data in 'ofproto_port' and must free it with |
b5827b24 BP |
1711 | * ofproto_port_destroy() when it is no longer needed. */ |
1712 | int | |
1713 | ofproto_port_query_by_name(const struct ofproto *ofproto, const char *devname, | |
1714 | struct ofproto_port *port) | |
a4e2e1f2 | 1715 | { |
b5827b24 BP |
1716 | int error; |
1717 | ||
abe529af BP |
1718 | error = ofproto->ofproto_class->port_query_by_name(ofproto, devname, port); |
1719 | if (error) { | |
1720 | memset(port, 0, sizeof *port); | |
b5827b24 BP |
1721 | } |
1722 | return error; | |
a4e2e1f2 EJ |
1723 | } |
1724 | ||
b5827b24 | 1725 | /* Deletes port number 'ofp_port' from the datapath for 'ofproto'. |
3a6ccc8c | 1726 | * Returns 0 if successful, otherwise a positive errno. */ |
064af421 | 1727 | int |
4e022ec0 | 1728 | ofproto_port_del(struct ofproto *ofproto, ofp_port_t ofp_port) |
064af421 | 1729 | { |
abe529af | 1730 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1264ec95 | 1731 | const char *name = ofport ? netdev_get_name(ofport->netdev) : "<unknown>"; |
e1b1d06a | 1732 | struct simap_node *ofp_request_node; |
3cf10406 | 1733 | int error; |
cdee00fd | 1734 | |
e1b1d06a JP |
1735 | ofp_request_node = simap_find(&ofproto->ofp_requests, name); |
1736 | if (ofp_request_node) { | |
1737 | simap_delete(&ofproto->ofp_requests, ofp_request_node); | |
1738 | } | |
1739 | ||
abe529af | 1740 | error = ofproto->ofproto_class->port_del(ofproto, ofp_port); |
892815f5 | 1741 | if (!error && ofport) { |
1264ec95 BP |
1742 | /* 'name' is the netdev's name and update_port() is going to close the |
1743 | * netdev. Just in case update_port() refers to 'name' after it | |
3a6ccc8c BP |
1744 | * destroys 'ofport', make a copy of it around the update_port() |
1745 | * call. */ | |
1746 | char *devname = xstrdup(name); | |
1747 | update_port(ofproto, devname); | |
1748 | free(devname); | |
3cf10406 BP |
1749 | } |
1750 | return error; | |
064af421 BP |
1751 | } |
1752 | ||
97f63e57 BP |
1753 | static int |
1754 | simple_flow_mod(struct ofproto *ofproto, | |
1755 | const struct match *match, unsigned int priority, | |
1756 | const struct ofpact *ofpacts, size_t ofpacts_len, | |
1757 | enum ofp_flow_mod_command command) | |
1758 | { | |
1759 | struct ofputil_flow_mod fm; | |
1760 | ||
1761 | memset(&fm, 0, sizeof fm); | |
1762 | fm.match = *match; | |
1763 | fm.priority = priority; | |
1764 | fm.cookie = 0; | |
1765 | fm.new_cookie = 0; | |
1766 | fm.modify_cookie = false; | |
1767 | fm.table_id = 0; | |
1768 | fm.command = command; | |
1769 | fm.idle_timeout = 0; | |
1770 | fm.hard_timeout = 0; | |
1771 | fm.buffer_id = UINT32_MAX; | |
1772 | fm.out_port = OFPP_ANY; | |
1773 | fm.out_group = OFPG_ANY; | |
1774 | fm.flags = 0; | |
1775 | fm.ofpacts = CONST_CAST(struct ofpact *, ofpacts); | |
1776 | fm.ofpacts_len = ofpacts_len; | |
1777 | return handle_flow_mod__(ofproto, NULL, &fm, NULL); | |
1778 | } | |
1779 | ||
6c1491fb | 1780 | /* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and |
fa8b054f BP |
1781 | * performs the 'n_actions' actions in 'actions'. The new flow will not |
1782 | * timeout. | |
1783 | * | |
1784 | * If cls_rule->priority is in the range of priorities supported by OpenFlow | |
1785 | * (0...65535, inclusive) then the flow will be visible to OpenFlow | |
1786 | * controllers; otherwise, it will be hidden. | |
1787 | * | |
f25d0cf3 | 1788 | * The caller retains ownership of 'cls_rule' and 'ofpacts'. |
6c1491fb BP |
1789 | * |
1790 | * This is a helper function for in-band control and fail-open. */ | |
064af421 | 1791 | void |
81a76618 BP |
1792 | ofproto_add_flow(struct ofproto *ofproto, const struct match *match, |
1793 | unsigned int priority, | |
f25d0cf3 | 1794 | const struct ofpact *ofpacts, size_t ofpacts_len) |
064af421 | 1795 | { |
7ee20df1 | 1796 | const struct rule *rule; |
6f00e29b | 1797 | bool must_add; |
7ee20df1 | 1798 | |
97f63e57 BP |
1799 | /* First do a cheap check whether the rule we're looking for already exists |
1800 | * with the actions that we want. If it does, then we're done. */ | |
0b4f2078 | 1801 | ovs_rwlock_rdlock(&ofproto->tables[0].cls.rwlock); |
81a76618 BP |
1802 | rule = rule_from_cls_rule(classifier_find_match_exactly( |
1803 | &ofproto->tables[0].cls, match, priority)); | |
6f00e29b | 1804 | if (rule) { |
c7c9a7c8 | 1805 | ovs_mutex_lock(&rule->mutex); |
6f00e29b BP |
1806 | must_add = !ofpacts_equal(rule->actions->ofpacts, |
1807 | rule->actions->ofpacts_len, | |
1808 | ofpacts, ofpacts_len); | |
c7c9a7c8 | 1809 | ovs_mutex_unlock(&rule->mutex); |
6f00e29b BP |
1810 | } else { |
1811 | must_add = true; | |
1812 | } | |
0b4f2078 | 1813 | ovs_rwlock_unlock(&ofproto->tables[0].cls.rwlock); |
97f63e57 BP |
1814 | |
1815 | /* If there's no such rule or the rule doesn't have the actions we want, | |
1816 | * fall back to a executing a full flow mod. We can't optimize this at | |
1817 | * all because we didn't take enough locks above to ensure that the flow | |
1818 | * table didn't already change beneath us. */ | |
6f00e29b | 1819 | if (must_add) { |
97f63e57 BP |
1820 | simple_flow_mod(ofproto, match, priority, ofpacts, ofpacts_len, |
1821 | OFPFC_MODIFY_STRICT); | |
7ee20df1 | 1822 | } |
064af421 BP |
1823 | } |
1824 | ||
75a75043 | 1825 | /* Executes the flow modification specified in 'fm'. Returns 0 on success, an |
90bf1e07 BP |
1826 | * OFPERR_* OpenFlow error code on failure, or OFPROTO_POSTPONE if the |
1827 | * operation cannot be initiated now but may be retried later. | |
75a75043 BP |
1828 | * |
1829 | * This is a helper function for in-band control and fail-open. */ | |
1830 | int | |
e3b56933 | 1831 | ofproto_flow_mod(struct ofproto *ofproto, struct ofputil_flow_mod *fm) |
75a75043 BP |
1832 | { |
1833 | return handle_flow_mod__(ofproto, NULL, fm, NULL); | |
1834 | } | |
1835 | ||
6c1491fb BP |
1836 | /* Searches for a rule with matching criteria exactly equal to 'target' in |
1837 | * ofproto's table 0 and, if it finds one, deletes it. | |
1838 | * | |
1839 | * This is a helper function for in-band control and fail-open. */ | |
7ee20df1 | 1840 | bool |
81a76618 BP |
1841 | ofproto_delete_flow(struct ofproto *ofproto, |
1842 | const struct match *target, unsigned int priority) | |
064af421 | 1843 | { |
8037acb4 | 1844 | struct classifier *cls = &ofproto->tables[0].cls; |
064af421 BP |
1845 | struct rule *rule; |
1846 | ||
97f63e57 BP |
1847 | /* First do a cheap check whether the rule we're looking for has already |
1848 | * been deleted. If so, then we're done. */ | |
8037acb4 BP |
1849 | ovs_rwlock_rdlock(&cls->rwlock); |
1850 | rule = rule_from_cls_rule(classifier_find_match_exactly(cls, target, | |
1851 | priority)); | |
1852 | ovs_rwlock_unlock(&cls->rwlock); | |
7ee20df1 | 1853 | if (!rule) { |
7ee20df1 | 1854 | return true; |
bcf84111 | 1855 | } |
5ecc9d81 | 1856 | |
97f63e57 BP |
1857 | /* Fall back to a executing a full flow mod. We can't optimize this at all |
1858 | * because we didn't take enough locks above to ensure that the flow table | |
1859 | * didn't already change beneath us. */ | |
1860 | return simple_flow_mod(ofproto, target, priority, NULL, 0, | |
1861 | OFPFC_DELETE_STRICT) != OFPROTO_POSTPONE; | |
142e1f5c BP |
1862 | } |
1863 | ||
7ee20df1 BP |
1864 | /* Starts the process of deleting all of the flows from all of ofproto's flow |
1865 | * tables and then reintroducing the flows required by in-band control and | |
1866 | * fail-open. The process will complete in a later call to ofproto_run(). */ | |
142e1f5c BP |
1867 | void |
1868 | ofproto_flush_flows(struct ofproto *ofproto) | |
1869 | { | |
7ee20df1 BP |
1870 | COVERAGE_INC(ofproto_flush); |
1871 | ofproto->state = S_FLUSH; | |
064af421 BP |
1872 | } |
1873 | \f | |
1874 | static void | |
1875 | reinit_ports(struct ofproto *p) | |
1876 | { | |
abe529af | 1877 | struct ofproto_port_dump dump; |
b3c01ed3 | 1878 | struct sset devnames; |
064af421 | 1879 | struct ofport *ofport; |
abe529af | 1880 | struct ofproto_port ofproto_port; |
b3c01ed3 | 1881 | const char *devname; |
064af421 | 1882 | |
898bf89d JP |
1883 | COVERAGE_INC(ofproto_reinit_ports); |
1884 | ||
b3c01ed3 | 1885 | sset_init(&devnames); |
4e8e4213 | 1886 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { |
1264ec95 | 1887 | sset_add(&devnames, netdev_get_name(ofport->netdev)); |
064af421 | 1888 | } |
abe529af BP |
1889 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { |
1890 | sset_add(&devnames, ofproto_port.name); | |
064af421 | 1891 | } |
064af421 | 1892 | |
b3c01ed3 BP |
1893 | SSET_FOR_EACH (devname, &devnames) { |
1894 | update_port(p, devname); | |
064af421 | 1895 | } |
b3c01ed3 | 1896 | sset_destroy(&devnames); |
064af421 BP |
1897 | } |
1898 | ||
4e022ec0 | 1899 | static ofp_port_t |
e1b1d06a JP |
1900 | alloc_ofp_port(struct ofproto *ofproto, const char *netdev_name) |
1901 | { | |
4e022ec0 | 1902 | uint16_t port_idx; |
e1b1d06a | 1903 | |
4e022ec0 | 1904 | port_idx = simap_get(&ofproto->ofp_requests, netdev_name); |
430dbb14 | 1905 | port_idx = port_idx ? port_idx : UINT16_MAX; |
4e022ec0 | 1906 | |
430dbb14 | 1907 | if (port_idx >= ofproto->max_ports |
4e022ec0 | 1908 | || bitmap_is_set(ofproto->ofp_port_ids, port_idx)) { |
430dbb14 | 1909 | uint16_t end_port_no = ofproto->alloc_port_no; |
e1b1d06a | 1910 | |
e1b1d06a JP |
1911 | /* Search for a free OpenFlow port number. We try not to |
1912 | * immediately reuse them to prevent problems due to old | |
1913 | * flows. */ | |
6033d9d9 | 1914 | for (;;) { |
430dbb14 AW |
1915 | if (++ofproto->alloc_port_no >= ofproto->max_ports) { |
1916 | ofproto->alloc_port_no = 0; | |
6033d9d9 | 1917 | } |
430dbb14 AW |
1918 | if (!bitmap_is_set(ofproto->ofp_port_ids, |
1919 | ofproto->alloc_port_no)) { | |
1920 | port_idx = ofproto->alloc_port_no; | |
6033d9d9 | 1921 | break; |
e1b1d06a | 1922 | } |
430dbb14 | 1923 | if (ofproto->alloc_port_no == end_port_no) { |
6033d9d9 | 1924 | return OFPP_NONE; |
e1b1d06a JP |
1925 | } |
1926 | } | |
1927 | } | |
4e022ec0 AW |
1928 | bitmap_set1(ofproto->ofp_port_ids, port_idx); |
1929 | return u16_to_ofp(port_idx); | |
e1b1d06a JP |
1930 | } |
1931 | ||
1932 | static void | |
4e022ec0 | 1933 | dealloc_ofp_port(const struct ofproto *ofproto, ofp_port_t ofp_port) |
e1b1d06a | 1934 | { |
430dbb14 | 1935 | if (ofp_to_u16(ofp_port) < ofproto->max_ports) { |
4e022ec0 | 1936 | bitmap_set0(ofproto->ofp_port_ids, ofp_to_u16(ofp_port)); |
40fa9417 | 1937 | } |
e1b1d06a JP |
1938 | } |
1939 | ||
fbfa2911 BP |
1940 | /* Opens and returns a netdev for 'ofproto_port' in 'ofproto', or a null |
1941 | * pointer if the netdev cannot be opened. On success, also fills in | |
1942 | * 'opp'. */ | |
b33951b8 | 1943 | static struct netdev * |
e1b1d06a JP |
1944 | ofport_open(struct ofproto *ofproto, |
1945 | struct ofproto_port *ofproto_port, | |
9e1fd49b | 1946 | struct ofputil_phy_port *pp) |
064af421 BP |
1947 | { |
1948 | enum netdev_flags flags; | |
064af421 | 1949 | struct netdev *netdev; |
064af421 BP |
1950 | int error; |
1951 | ||
18812dff | 1952 | error = netdev_open(ofproto_port->name, ofproto_port->type, &netdev); |
064af421 | 1953 | if (error) { |
fbfa2911 | 1954 | VLOG_WARN_RL(&rl, "%s: ignoring port %s (%"PRIu16") because netdev %s " |
064af421 | 1955 | "cannot be opened (%s)", |
fbfa2911 | 1956 | ofproto->name, |
abe529af | 1957 | ofproto_port->name, ofproto_port->ofp_port, |
10a89ef0 | 1958 | ofproto_port->name, ovs_strerror(error)); |
064af421 BP |
1959 | return NULL; |
1960 | } | |
1961 | ||
e1b1d06a JP |
1962 | if (ofproto_port->ofp_port == OFPP_NONE) { |
1963 | if (!strcmp(ofproto->name, ofproto_port->name)) { | |
1964 | ofproto_port->ofp_port = OFPP_LOCAL; | |
1965 | } else { | |
1966 | ofproto_port->ofp_port = alloc_ofp_port(ofproto, | |
1967 | ofproto_port->name); | |
1968 | } | |
1969 | } | |
9e1fd49b BP |
1970 | pp->port_no = ofproto_port->ofp_port; |
1971 | netdev_get_etheraddr(netdev, pp->hw_addr); | |
1972 | ovs_strlcpy(pp->name, ofproto_port->name, sizeof pp->name); | |
064af421 | 1973 | netdev_get_flags(netdev, &flags); |
9e1fd49b BP |
1974 | pp->config = flags & NETDEV_UP ? 0 : OFPUTIL_PC_PORT_DOWN; |
1975 | pp->state = netdev_get_carrier(netdev) ? 0 : OFPUTIL_PS_LINK_DOWN; | |
1976 | netdev_get_features(netdev, &pp->curr, &pp->advertised, | |
1977 | &pp->supported, &pp->peer); | |
cd65125d BP |
1978 | pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000; |
1979 | pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000; | |
118c4676 | 1980 | |
b33951b8 | 1981 | return netdev; |
064af421 BP |
1982 | } |
1983 | ||
b33951b8 | 1984 | /* Returns true if most fields of 'a' and 'b' are equal. Differences in name, |
9e1fd49b | 1985 | * port number, and 'config' bits other than OFPUTIL_PS_LINK_DOWN are |
b33951b8 BP |
1986 | * disregarded. */ |
1987 | static bool | |
9e1fd49b BP |
1988 | ofport_equal(const struct ofputil_phy_port *a, |
1989 | const struct ofputil_phy_port *b) | |
064af421 | 1990 | { |
9e1fd49b | 1991 | return (eth_addr_equals(a->hw_addr, b->hw_addr) |
064af421 | 1992 | && a->state == b->state |
9e1fd49b | 1993 | && !((a->config ^ b->config) & OFPUTIL_PC_PORT_DOWN) |
064af421 BP |
1994 | && a->curr == b->curr |
1995 | && a->advertised == b->advertised | |
1996 | && a->supported == b->supported | |
9e1fd49b BP |
1997 | && a->peer == b->peer |
1998 | && a->curr_speed == b->curr_speed | |
1999 | && a->max_speed == b->max_speed); | |
064af421 BP |
2000 | } |
2001 | ||
b33951b8 BP |
2002 | /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'. |
2003 | * The caller must ensure that 'p' does not have a conflicting ofport (that is, | |
2004 | * one with the same name or port number). */ | |
064af421 | 2005 | static void |
b33951b8 | 2006 | ofport_install(struct ofproto *p, |
9e1fd49b | 2007 | struct netdev *netdev, const struct ofputil_phy_port *pp) |
064af421 | 2008 | { |
b33951b8 BP |
2009 | const char *netdev_name = netdev_get_name(netdev); |
2010 | struct ofport *ofport; | |
abe529af | 2011 | int error; |
72b06300 | 2012 | |
b33951b8 | 2013 | /* Create ofport. */ |
abe529af BP |
2014 | ofport = p->ofproto_class->port_alloc(); |
2015 | if (!ofport) { | |
2016 | error = ENOMEM; | |
2017 | goto error; | |
2018 | } | |
0f7d71a5 | 2019 | ofport->ofproto = p; |
b33951b8 | 2020 | ofport->netdev = netdev; |
031d8bff | 2021 | ofport->change_seq = netdev_change_seq(netdev); |
9e1fd49b BP |
2022 | ofport->pp = *pp; |
2023 | ofport->ofp_port = pp->port_no; | |
65e0be10 | 2024 | ofport->created = time_msec(); |
b33951b8 BP |
2025 | |
2026 | /* Add port to 'p'. */ | |
4e022ec0 | 2027 | hmap_insert(&p->ports, &ofport->hmap_node, |
f9c0c3ec | 2028 | hash_ofp_port(ofport->ofp_port)); |
72b06300 | 2029 | shash_add(&p->port_by_name, netdev_name, ofport); |
abe529af | 2030 | |
ada3428f | 2031 | update_mtu(p, ofport); |
9197df76 | 2032 | |
abe529af BP |
2033 | /* Let the ofproto_class initialize its private data. */ |
2034 | error = p->ofproto_class->port_construct(ofport); | |
2035 | if (error) { | |
2036 | goto error; | |
2037 | } | |
9e1fd49b | 2038 | connmgr_send_port_status(p->connmgr, pp, OFPPR_ADD); |
abe529af BP |
2039 | return; |
2040 | ||
2041 | error: | |
2042 | VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)", | |
10a89ef0 | 2043 | p->name, netdev_name, ovs_strerror(error)); |
abe529af BP |
2044 | if (ofport) { |
2045 | ofport_destroy__(ofport); | |
2046 | } else { | |
2047 | netdev_close(netdev); | |
72b06300 | 2048 | } |
064af421 BP |
2049 | } |
2050 | ||
b33951b8 | 2051 | /* Removes 'ofport' from 'p' and destroys it. */ |
064af421 | 2052 | static void |
0f7d71a5 | 2053 | ofport_remove(struct ofport *ofport) |
064af421 | 2054 | { |
9e1fd49b | 2055 | connmgr_send_port_status(ofport->ofproto->connmgr, &ofport->pp, |
fa066f01 | 2056 | OFPPR_DELETE); |
abe529af | 2057 | ofport_destroy(ofport); |
b33951b8 BP |
2058 | } |
2059 | ||
2060 | /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and | |
2061 | * destroys it. */ | |
2062 | static void | |
2063 | ofport_remove_with_name(struct ofproto *ofproto, const char *name) | |
2064 | { | |
2065 | struct ofport *port = shash_find_data(&ofproto->port_by_name, name); | |
2066 | if (port) { | |
0f7d71a5 | 2067 | ofport_remove(port); |
b33951b8 BP |
2068 | } |
2069 | } | |
2070 | ||
9e1fd49b | 2071 | /* Updates 'port' with new 'pp' description. |
b33951b8 BP |
2072 | * |
2073 | * Does not handle a name or port number change. The caller must implement | |
2074 | * such a change as a delete followed by an add. */ | |
2075 | static void | |
9e1fd49b | 2076 | ofport_modified(struct ofport *port, struct ofputil_phy_port *pp) |
b33951b8 | 2077 | { |
9e1fd49b BP |
2078 | memcpy(port->pp.hw_addr, pp->hw_addr, ETH_ADDR_LEN); |
2079 | port->pp.config = ((port->pp.config & ~OFPUTIL_PC_PORT_DOWN) | |
2080 | | (pp->config & OFPUTIL_PC_PORT_DOWN)); | |
2081 | port->pp.state = pp->state; | |
2082 | port->pp.curr = pp->curr; | |
2083 | port->pp.advertised = pp->advertised; | |
2084 | port->pp.supported = pp->supported; | |
2085 | port->pp.peer = pp->peer; | |
2086 | port->pp.curr_speed = pp->curr_speed; | |
2087 | port->pp.max_speed = pp->max_speed; | |
b33951b8 | 2088 | |
9e1fd49b | 2089 | connmgr_send_port_status(port->ofproto->connmgr, &port->pp, OFPPR_MODIFY); |
064af421 BP |
2090 | } |
2091 | ||
5a2dfd47 JP |
2092 | /* Update OpenFlow 'state' in 'port' and notify controller. */ |
2093 | void | |
9e1fd49b | 2094 | ofproto_port_set_state(struct ofport *port, enum ofputil_port_state state) |
5a2dfd47 | 2095 | { |
9e1fd49b BP |
2096 | if (port->pp.state != state) { |
2097 | port->pp.state = state; | |
2098 | connmgr_send_port_status(port->ofproto->connmgr, &port->pp, | |
5a2dfd47 JP |
2099 | OFPPR_MODIFY); |
2100 | } | |
2101 | } | |
2102 | ||
abe529af | 2103 | void |
4e022ec0 | 2104 | ofproto_port_unregister(struct ofproto *ofproto, ofp_port_t ofp_port) |
e7934396 | 2105 | { |
abe529af BP |
2106 | struct ofport *port = ofproto_get_port(ofproto, ofp_port); |
2107 | if (port) { | |
52a90c29 BP |
2108 | if (port->ofproto->ofproto_class->set_realdev) { |
2109 | port->ofproto->ofproto_class->set_realdev(port, 0, 0); | |
2110 | } | |
b308140a JP |
2111 | if (port->ofproto->ofproto_class->set_stp_port) { |
2112 | port->ofproto->ofproto_class->set_stp_port(port, NULL); | |
2113 | } | |
abe529af | 2114 | if (port->ofproto->ofproto_class->set_cfm) { |
a5610457 | 2115 | port->ofproto->ofproto_class->set_cfm(port, NULL); |
abe529af BP |
2116 | } |
2117 | if (port->ofproto->ofproto_class->bundle_remove) { | |
2118 | port->ofproto->ofproto_class->bundle_remove(port); | |
e7934396 BP |
2119 | } |
2120 | } | |
2121 | } | |
2122 | ||
2123 | static void | |
abe529af | 2124 | ofport_destroy__(struct ofport *port) |
e7934396 | 2125 | { |
abe529af BP |
2126 | struct ofproto *ofproto = port->ofproto; |
2127 | const char *name = netdev_get_name(port->netdev); | |
fa066f01 | 2128 | |
abe529af BP |
2129 | hmap_remove(&ofproto->ports, &port->hmap_node); |
2130 | shash_delete(&ofproto->port_by_name, | |
2131 | shash_find(&ofproto->port_by_name, name)); | |
fa066f01 | 2132 | |
abe529af BP |
2133 | netdev_close(port->netdev); |
2134 | ofproto->ofproto_class->port_dealloc(port); | |
e7934396 BP |
2135 | } |
2136 | ||
064af421 | 2137 | static void |
abe529af | 2138 | ofport_destroy(struct ofport *port) |
064af421 | 2139 | { |
fa066f01 | 2140 | if (port) { |
e1b1d06a | 2141 | dealloc_ofp_port(port->ofproto, port->ofp_port); |
abe529af BP |
2142 | port->ofproto->ofproto_class->port_destruct(port); |
2143 | ofport_destroy__(port); | |
2144 | } | |
064af421 BP |
2145 | } |
2146 | ||
abe529af | 2147 | struct ofport * |
4e022ec0 | 2148 | ofproto_get_port(const struct ofproto *ofproto, ofp_port_t ofp_port) |
ca0f572c BP |
2149 | { |
2150 | struct ofport *port; | |
2151 | ||
f9c0c3ec | 2152 | HMAP_FOR_EACH_IN_BUCKET (port, hmap_node, hash_ofp_port(ofp_port), |
4e022ec0 | 2153 | &ofproto->ports) { |
abe529af | 2154 | if (port->ofp_port == ofp_port) { |
ca0f572c BP |
2155 | return port; |
2156 | } | |
2157 | } | |
2158 | return NULL; | |
2159 | } | |
2160 | ||
6527c598 PS |
2161 | int |
2162 | ofproto_port_get_stats(const struct ofport *port, struct netdev_stats *stats) | |
2163 | { | |
2164 | struct ofproto *ofproto = port->ofproto; | |
2165 | int error; | |
2166 | ||
2167 | if (ofproto->ofproto_class->port_get_stats) { | |
2168 | error = ofproto->ofproto_class->port_get_stats(port, stats); | |
2169 | } else { | |
2170 | error = EOPNOTSUPP; | |
2171 | } | |
2172 | ||
2173 | return error; | |
2174 | } | |
2175 | ||
064af421 | 2176 | static void |
b33951b8 | 2177 | update_port(struct ofproto *ofproto, const char *name) |
064af421 | 2178 | { |
abe529af | 2179 | struct ofproto_port ofproto_port; |
9e1fd49b | 2180 | struct ofputil_phy_port pp; |
b33951b8 BP |
2181 | struct netdev *netdev; |
2182 | struct ofport *port; | |
064af421 BP |
2183 | |
2184 | COVERAGE_INC(ofproto_update_port); | |
c874dc6d | 2185 | |
b33951b8 | 2186 | /* Fetch 'name''s location and properties from the datapath. */ |
abe529af | 2187 | netdev = (!ofproto_port_query_by_name(ofproto, name, &ofproto_port) |
fbfa2911 | 2188 | ? ofport_open(ofproto, &ofproto_port, &pp) |
b33951b8 | 2189 | : NULL); |
4e022ec0 | 2190 | |
b33951b8 | 2191 | if (netdev) { |
abe529af | 2192 | port = ofproto_get_port(ofproto, ofproto_port.ofp_port); |
b33951b8 | 2193 | if (port && !strcmp(netdev_get_name(port->netdev), name)) { |
e65942a0 BP |
2194 | struct netdev *old_netdev = port->netdev; |
2195 | ||
b33951b8 | 2196 | /* 'name' hasn't changed location. Any properties changed? */ |
9e1fd49b BP |
2197 | if (!ofport_equal(&port->pp, &pp)) { |
2198 | ofport_modified(port, &pp); | |
abe529af BP |
2199 | } |
2200 | ||
ada3428f | 2201 | update_mtu(ofproto, port); |
9197df76 | 2202 | |
e65942a0 BP |
2203 | /* Install the newly opened netdev in case it has changed. |
2204 | * Don't close the old netdev yet in case port_modified has to | |
2205 | * remove a retained reference to it.*/ | |
abe529af | 2206 | port->netdev = netdev; |
031d8bff | 2207 | port->change_seq = netdev_change_seq(netdev); |
abe529af BP |
2208 | |
2209 | if (port->ofproto->ofproto_class->port_modified) { | |
2210 | port->ofproto->ofproto_class->port_modified(port); | |
b33951b8 | 2211 | } |
e65942a0 BP |
2212 | |
2213 | netdev_close(old_netdev); | |
b33951b8 BP |
2214 | } else { |
2215 | /* If 'port' is nonnull then its name differs from 'name' and thus | |
2216 | * we should delete it. If we think there's a port named 'name' | |
2217 | * then its port number must be wrong now so delete it too. */ | |
2218 | if (port) { | |
0f7d71a5 | 2219 | ofport_remove(port); |
b33951b8 BP |
2220 | } |
2221 | ofport_remove_with_name(ofproto, name); | |
9e1fd49b | 2222 | ofport_install(ofproto, netdev, &pp); |
c874dc6d | 2223 | } |
b33951b8 BP |
2224 | } else { |
2225 | /* Any port named 'name' is gone now. */ | |
2226 | ofport_remove_with_name(ofproto, name); | |
c874dc6d | 2227 | } |
abe529af | 2228 | ofproto_port_destroy(&ofproto_port); |
064af421 BP |
2229 | } |
2230 | ||
2231 | static int | |
2232 | init_ports(struct ofproto *p) | |
2233 | { | |
abe529af BP |
2234 | struct ofproto_port_dump dump; |
2235 | struct ofproto_port ofproto_port; | |
e1b1d06a | 2236 | struct shash_node *node, *next; |
abe529af BP |
2237 | |
2238 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { | |
e1b1d06a JP |
2239 | const char *name = ofproto_port.name; |
2240 | ||
2241 | if (shash_find(&p->port_by_name, name)) { | |
fbfa2911 | 2242 | VLOG_WARN_RL(&rl, "%s: ignoring duplicate device %s in datapath", |
e1b1d06a | 2243 | p->name, name); |
abe529af | 2244 | } else { |
9e1fd49b | 2245 | struct ofputil_phy_port pp; |
b33951b8 BP |
2246 | struct netdev *netdev; |
2247 | ||
e1b1d06a JP |
2248 | /* Check if an OpenFlow port number had been requested. */ |
2249 | node = shash_find(&init_ofp_ports, name); | |
2250 | if (node) { | |
2251 | const struct iface_hint *iface_hint = node->data; | |
4e022ec0 AW |
2252 | simap_put(&p->ofp_requests, name, |
2253 | ofp_to_u16(iface_hint->ofp_port)); | |
e1b1d06a JP |
2254 | } |
2255 | ||
fbfa2911 | 2256 | netdev = ofport_open(p, &ofproto_port, &pp); |
b33951b8 | 2257 | if (netdev) { |
9e1fd49b | 2258 | ofport_install(p, netdev, &pp); |
430dbb14 | 2259 | if (ofp_to_u16(ofproto_port.ofp_port) < p->max_ports) { |
7c35397c | 2260 | p->alloc_port_no = MAX(p->alloc_port_no, |
430dbb14 | 2261 | ofp_to_u16(ofproto_port.ofp_port)); |
7c35397c | 2262 | } |
064af421 BP |
2263 | } |
2264 | } | |
2265 | } | |
b0ec0f27 | 2266 | |
e1b1d06a | 2267 | SHASH_FOR_EACH_SAFE(node, next, &init_ofp_ports) { |
4f9e08a5 | 2268 | struct iface_hint *iface_hint = node->data; |
e1b1d06a JP |
2269 | |
2270 | if (!strcmp(iface_hint->br_name, p->name)) { | |
2271 | free(iface_hint->br_name); | |
2272 | free(iface_hint->br_type); | |
4f9e08a5 | 2273 | free(iface_hint); |
e1b1d06a JP |
2274 | shash_delete(&init_ofp_ports, node); |
2275 | } | |
2276 | } | |
2277 | ||
064af421 BP |
2278 | return 0; |
2279 | } | |
9197df76 JP |
2280 | |
2281 | /* Find the minimum MTU of all non-datapath devices attached to 'p'. | |
2282 | * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */ | |
2283 | static int | |
2284 | find_min_mtu(struct ofproto *p) | |
2285 | { | |
2286 | struct ofport *ofport; | |
2287 | int mtu = 0; | |
2288 | ||
2289 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2290 | struct netdev *netdev = ofport->netdev; | |
2291 | int dev_mtu; | |
2292 | ||
2293 | /* Skip any internal ports, since that's what we're trying to | |
2294 | * set. */ | |
2295 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
2296 | continue; | |
2297 | } | |
2298 | ||
2299 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2300 | continue; | |
2301 | } | |
2302 | if (!mtu || dev_mtu < mtu) { | |
2303 | mtu = dev_mtu; | |
2304 | } | |
2305 | } | |
2306 | ||
2307 | return mtu ? mtu: ETH_PAYLOAD_MAX; | |
2308 | } | |
2309 | ||
ada3428f PS |
2310 | /* Update MTU of all datapath devices on 'p' to the minimum of the |
2311 | * non-datapath ports in event of 'port' added or changed. */ | |
9197df76 | 2312 | static void |
ada3428f | 2313 | update_mtu(struct ofproto *p, struct ofport *port) |
9197df76 JP |
2314 | { |
2315 | struct ofport *ofport; | |
ada3428f PS |
2316 | struct netdev *netdev = port->netdev; |
2317 | int dev_mtu, old_min; | |
2318 | ||
2319 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2320 | port->mtu = 0; | |
2321 | return; | |
2322 | } | |
2323 | if (!strcmp(netdev_get_type(port->netdev), "internal")) { | |
2324 | if (dev_mtu > p->min_mtu) { | |
2325 | if (!netdev_set_mtu(port->netdev, p->min_mtu)) { | |
2326 | dev_mtu = p->min_mtu; | |
2327 | } | |
2328 | } | |
2329 | port->mtu = dev_mtu; | |
2330 | return; | |
2331 | } | |
2332 | ||
2333 | /* For non-internal port find new min mtu. */ | |
2334 | old_min = p->min_mtu; | |
2335 | port->mtu = dev_mtu; | |
2336 | p->min_mtu = find_min_mtu(p); | |
2337 | if (p->min_mtu == old_min) { | |
2338 | return; | |
2339 | } | |
9197df76 JP |
2340 | |
2341 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2342 | struct netdev *netdev = ofport->netdev; | |
2343 | ||
2344 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
ada3428f PS |
2345 | if (!netdev_set_mtu(netdev, p->min_mtu)) { |
2346 | ofport->mtu = p->min_mtu; | |
2347 | } | |
9197df76 JP |
2348 | } |
2349 | } | |
2350 | } | |
064af421 | 2351 | \f |
a2143702 BP |
2352 | void |
2353 | ofproto_rule_ref(struct rule *rule) | |
064af421 | 2354 | { |
1eae3d33 | 2355 | if (rule) { |
a2143702 BP |
2356 | unsigned int orig; |
2357 | ||
2358 | atomic_add(&rule->ref_count, 1, &orig); | |
2359 | ovs_assert(orig != 0); | |
2360 | } | |
2361 | } | |
2362 | ||
2363 | void | |
2364 | ofproto_rule_unref(struct rule *rule) | |
2365 | { | |
2366 | if (rule) { | |
2367 | unsigned int orig; | |
2368 | ||
2369 | atomic_sub(&rule->ref_count, 1, &orig); | |
2370 | if (orig == 1) { | |
2371 | rule->ofproto->ofproto_class->rule_destruct(rule); | |
2372 | ofproto_rule_destroy__(rule); | |
2373 | } else { | |
2374 | ovs_assert(orig != 0); | |
2375 | } | |
1eae3d33 | 2376 | } |
064af421 BP |
2377 | } |
2378 | ||
392caac0 BP |
2379 | static void |
2380 | ofproto_rule_destroy__(struct rule *rule) | |
2381 | { | |
49a0e0eb | 2382 | cls_rule_destroy(CONST_CAST(struct cls_rule *, &rule->cr)); |
6f00e29b | 2383 | rule_actions_unref(rule->actions); |
c7c9a7c8 | 2384 | ovs_mutex_destroy(&rule->mutex); |
392caac0 BP |
2385 | rule->ofproto->ofproto_class->rule_dealloc(rule); |
2386 | } | |
2387 | ||
6f00e29b BP |
2388 | /* Creates and returns a new 'struct rule_actions', with a ref_count of 1, |
2389 | * whose actions are a copy of from the 'ofpacts_len' bytes of 'ofpacts'. */ | |
2390 | struct rule_actions * | |
2391 | rule_actions_create(const struct ofpact *ofpacts, size_t ofpacts_len) | |
2392 | { | |
2393 | struct rule_actions *actions; | |
2394 | ||
2395 | actions = xmalloc(sizeof *actions); | |
2396 | atomic_init(&actions->ref_count, 1); | |
2397 | actions->ofpacts = xmemdup(ofpacts, ofpacts_len); | |
2398 | actions->ofpacts_len = ofpacts_len; | |
2399 | actions->meter_id = ofpacts_get_meter(ofpacts, ofpacts_len); | |
2400 | return actions; | |
2401 | } | |
2402 | ||
2403 | /* Increments 'actions''s ref_count. */ | |
2404 | void | |
2405 | rule_actions_ref(struct rule_actions *actions) | |
2406 | { | |
2407 | if (actions) { | |
2408 | unsigned int orig; | |
2409 | ||
2410 | atomic_add(&actions->ref_count, 1, &orig); | |
2411 | ovs_assert(orig != 0); | |
2412 | } | |
2413 | } | |
2414 | ||
2415 | /* Decrements 'actions''s ref_count and frees 'actions' if the ref_count | |
2416 | * reaches 0. */ | |
2417 | void | |
2418 | rule_actions_unref(struct rule_actions *actions) | |
2419 | { | |
2420 | if (actions) { | |
2421 | unsigned int orig; | |
2422 | ||
2423 | atomic_sub(&actions->ref_count, 1, &orig); | |
2424 | if (orig == 1) { | |
2425 | free(actions); | |
2426 | } else { | |
2427 | ovs_assert(orig != 0); | |
2428 | } | |
2429 | } | |
2430 | } | |
2431 | ||
bcf84111 | 2432 | /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action |
f25d0cf3 | 2433 | * that outputs to 'port' (output to OFPP_FLOOD and OFPP_ALL doesn't count). */ |
74e79b7c | 2434 | static bool |
4e022ec0 | 2435 | ofproto_rule_has_out_port(const struct rule *rule, ofp_port_t port) |
064af421 | 2436 | { |
7f05e7ab | 2437 | return (port == OFPP_ANY |
6f00e29b BP |
2438 | || ofpacts_output_to_port(rule->actions->ofpacts, |
2439 | rule->actions->ofpacts_len, port)); | |
064af421 BP |
2440 | } |
2441 | ||
7395c052 | 2442 | /* Returns true if 'rule' has group and equals group_id. */ |
74e79b7c | 2443 | static bool |
7395c052 NZ |
2444 | ofproto_rule_has_out_group(const struct rule *rule, uint32_t group_id) |
2445 | { | |
2446 | return (group_id == OFPG11_ANY | |
6f00e29b BP |
2447 | || ofpacts_output_to_group(rule->actions->ofpacts, |
2448 | rule->actions->ofpacts_len, group_id)); | |
7395c052 NZ |
2449 | } |
2450 | ||
2b07c8b1 BP |
2451 | /* Returns true if a rule related to 'op' has an OpenFlow OFPAT_OUTPUT or |
2452 | * OFPAT_ENQUEUE action that outputs to 'out_port'. */ | |
2453 | bool | |
4e022ec0 | 2454 | ofoperation_has_out_port(const struct ofoperation *op, ofp_port_t out_port) |
2b07c8b1 BP |
2455 | { |
2456 | if (ofproto_rule_has_out_port(op->rule, out_port)) { | |
2457 | return true; | |
2458 | } | |
2459 | ||
2460 | switch (op->type) { | |
2461 | case OFOPERATION_ADD: | |
2b07c8b1 BP |
2462 | case OFOPERATION_DELETE: |
2463 | return false; | |
2464 | ||
2465 | case OFOPERATION_MODIFY: | |
b277c7cc | 2466 | case OFOPERATION_REPLACE: |
6f00e29b BP |
2467 | return ofpacts_output_to_port(op->actions->ofpacts, |
2468 | op->actions->ofpacts_len, out_port); | |
2b07c8b1 BP |
2469 | } |
2470 | ||
2471 | NOT_REACHED(); | |
2472 | } | |
2473 | ||
35412852 BP |
2474 | static void |
2475 | rule_execute_destroy(struct rule_execute *e) | |
eedc0097 | 2476 | { |
35412852 BP |
2477 | ofproto_rule_unref(e->rule); |
2478 | list_remove(&e->list_node); | |
2479 | free(e); | |
2480 | } | |
eedc0097 | 2481 | |
35412852 BP |
2482 | /* Executes all "rule_execute" operations queued up in ofproto->rule_executes, |
2483 | * by passing them to the ofproto provider. */ | |
2484 | static void | |
2485 | run_rule_executes(struct ofproto *ofproto) | |
2486 | { | |
2487 | struct rule_execute *e, *next; | |
2488 | struct list executes; | |
2489 | ||
2490 | guarded_list_pop_all(&ofproto->rule_executes, &executes); | |
2491 | LIST_FOR_EACH_SAFE (e, next, list_node, &executes) { | |
2492 | union flow_in_port in_port_; | |
2493 | struct flow flow; | |
2494 | ||
2495 | in_port_.ofp_port = e->in_port; | |
2496 | flow_extract(e->packet, 0, 0, NULL, &in_port_, &flow); | |
2497 | ofproto->ofproto_class->rule_execute(e->rule, &flow, e->packet); | |
2498 | ||
2499 | rule_execute_destroy(e); | |
2500 | } | |
2501 | } | |
2502 | ||
2503 | /* Destroys and discards all "rule_execute" operations queued up in | |
2504 | * ofproto->rule_executes. */ | |
2505 | static void | |
2506 | destroy_rule_executes(struct ofproto *ofproto) | |
2507 | { | |
2508 | struct rule_execute *e, *next; | |
2509 | struct list executes; | |
2510 | ||
2511 | guarded_list_pop_all(&ofproto->rule_executes, &executes); | |
2512 | LIST_FOR_EACH_SAFE (e, next, list_node, &executes) { | |
2513 | ofpbuf_delete(e->packet); | |
2514 | rule_execute_destroy(e); | |
2515 | } | |
350a665f BP |
2516 | } |
2517 | ||
abe529af BP |
2518 | /* Returns true if 'rule' should be hidden from the controller. |
2519 | * | |
2520 | * Rules with priority higher than UINT16_MAX are set up by ofproto itself | |
2521 | * (e.g. by in-band control) and are intentionally hidden from the | |
2522 | * controller. */ | |
74e79b7c | 2523 | static bool |
2b07c8b1 | 2524 | ofproto_rule_is_hidden(const struct rule *rule) |
b6c9e612 | 2525 | { |
abe529af | 2526 | return rule->cr.priority > UINT16_MAX; |
7b064a79 | 2527 | } |
5c67e4af BP |
2528 | |
2529 | static enum oftable_flags | |
2530 | rule_get_flags(const struct rule *rule) | |
2531 | { | |
2532 | return rule->ofproto->tables[rule->table_id].flags; | |
2533 | } | |
2534 | ||
2535 | static bool | |
2536 | rule_is_modifiable(const struct rule *rule) | |
2537 | { | |
2538 | return !(rule_get_flags(rule) & OFTABLE_READONLY); | |
2539 | } | |
fa066f01 | 2540 | \f |
90bf1e07 | 2541 | static enum ofperr |
d1e2cf21 | 2542 | handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2543 | { |
b0421aa2 | 2544 | ofconn_send_reply(ofconn, make_echo_reply(oh)); |
064af421 | 2545 | return 0; |
064af421 BP |
2546 | } |
2547 | ||
90bf1e07 | 2548 | static enum ofperr |
d1e2cf21 | 2549 | handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2550 | { |
64ff1d96 | 2551 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
9e1fd49b | 2552 | struct ofputil_switch_features features; |
064af421 | 2553 | struct ofport *port; |
6c1491fb | 2554 | bool arp_match_ip; |
9e1fd49b | 2555 | struct ofpbuf *b; |
c2f0373a BP |
2556 | int n_tables; |
2557 | int i; | |
064af421 | 2558 | |
9e1fd49b BP |
2559 | ofproto->ofproto_class->get_features(ofproto, &arp_match_ip, |
2560 | &features.actions); | |
cb22974d | 2561 | ovs_assert(features.actions & OFPUTIL_A_OUTPUT); /* sanity check */ |
064af421 | 2562 | |
c2f0373a BP |
2563 | /* Count only non-hidden tables in the number of tables. (Hidden tables, |
2564 | * if present, are always at the end.) */ | |
2565 | n_tables = ofproto->n_tables; | |
2566 | for (i = 0; i < ofproto->n_tables; i++) { | |
2567 | if (ofproto->tables[i].flags & OFTABLE_HIDDEN) { | |
2568 | n_tables = i; | |
2569 | break; | |
2570 | } | |
2571 | } | |
2572 | ||
9e1fd49b BP |
2573 | features.datapath_id = ofproto->datapath_id; |
2574 | features.n_buffers = pktbuf_capacity(); | |
c2f0373a | 2575 | features.n_tables = n_tables; |
9e1fd49b BP |
2576 | features.capabilities = (OFPUTIL_C_FLOW_STATS | OFPUTIL_C_TABLE_STATS | |
2577 | OFPUTIL_C_PORT_STATS | OFPUTIL_C_QUEUE_STATS); | |
6c1491fb | 2578 | if (arp_match_ip) { |
9e1fd49b | 2579 | features.capabilities |= OFPUTIL_C_ARP_MATCH_IP; |
6c1491fb | 2580 | } |
2e1ae200 JR |
2581 | /* FIXME: Fill in proper features.auxiliary_id for auxiliary connections */ |
2582 | features.auxiliary_id = 0; | |
9e1fd49b BP |
2583 | b = ofputil_encode_switch_features(&features, ofconn_get_protocol(ofconn), |
2584 | oh->xid); | |
64ff1d96 | 2585 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
9e1fd49b | 2586 | ofputil_put_switch_features_port(&port->pp, b); |
064af421 | 2587 | } |
064af421 | 2588 | |
9e1fd49b | 2589 | ofconn_send_reply(ofconn, b); |
064af421 BP |
2590 | return 0; |
2591 | } | |
064af421 | 2592 | |
90bf1e07 | 2593 | static enum ofperr |
d1e2cf21 | 2594 | handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2595 | { |
64ff1d96 | 2596 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 | 2597 | struct ofp_switch_config *osc; |
f0fd1a17 | 2598 | enum ofp_config_flags flags; |
7257b535 | 2599 | struct ofpbuf *buf; |
959a2ecd | 2600 | |
064af421 | 2601 | /* Send reply. */ |
982697a4 BP |
2602 | buf = ofpraw_alloc_reply(OFPRAW_OFPT_GET_CONFIG_REPLY, oh, 0); |
2603 | osc = ofpbuf_put_uninit(buf, sizeof *osc); | |
f0fd1a17 | 2604 | flags = ofproto->frag_handling; |
2e1ae200 JR |
2605 | /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */ |
2606 | if (oh->version < OFP13_VERSION | |
2607 | && ofconn_get_invalid_ttl_to_controller(ofconn)) { | |
f0fd1a17 PS |
2608 | flags |= OFPC_INVALID_TTL_TO_CONTROLLER; |
2609 | } | |
2610 | osc->flags = htons(flags); | |
810605a2 | 2611 | osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn)); |
b0421aa2 | 2612 | ofconn_send_reply(ofconn, buf); |
2d70a31a | 2613 | |
064af421 BP |
2614 | return 0; |
2615 | } | |
064af421 | 2616 | |
90bf1e07 | 2617 | static enum ofperr |
982697a4 | 2618 | handle_set_config(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2619 | { |
982697a4 | 2620 | const struct ofp_switch_config *osc = ofpmsg_body(oh); |
64ff1d96 | 2621 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
d1e2cf21 | 2622 | uint16_t flags = ntohs(osc->flags); |
2d70a31a | 2623 | |
7257b535 | 2624 | if (ofconn_get_type(ofconn) != OFCONN_PRIMARY |
f4f1ea7e | 2625 | || ofconn_get_role(ofconn) != OFPCR12_ROLE_SLAVE) { |
7257b535 BP |
2626 | enum ofp_config_flags cur = ofproto->frag_handling; |
2627 | enum ofp_config_flags next = flags & OFPC_FRAG_MASK; | |
2628 | ||
cb22974d | 2629 | ovs_assert((cur & OFPC_FRAG_MASK) == cur); |
7257b535 BP |
2630 | if (cur != next) { |
2631 | if (ofproto->ofproto_class->set_frag_handling(ofproto, next)) { | |
2632 | ofproto->frag_handling = next; | |
2633 | } else { | |
2634 | VLOG_WARN_RL(&rl, "%s: unsupported fragment handling mode %s", | |
2635 | ofproto->name, | |
2636 | ofputil_frag_handling_to_string(next)); | |
2637 | } | |
064af421 BP |
2638 | } |
2639 | } | |
2e1ae200 | 2640 | /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */ |
f0fd1a17 | 2641 | ofconn_set_invalid_ttl_to_controller(ofconn, |
2e1ae200 JR |
2642 | (oh->version < OFP13_VERSION |
2643 | && flags & OFPC_INVALID_TTL_TO_CONTROLLER)); | |
ebe482fd | 2644 | |
810605a2 | 2645 | ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len)); |
0ad9b732 | 2646 | |
064af421 | 2647 | return 0; |
064af421 BP |
2648 | } |
2649 | ||
9deba63b | 2650 | /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow |
90bf1e07 BP |
2651 | * error message code for the caller to propagate upward. Otherwise, returns |
2652 | * 0. | |
2653 | * | |
2654 | * The log message mentions 'msg_type'. */ | |
2655 | static enum ofperr | |
2656 | reject_slave_controller(struct ofconn *ofconn) | |
9deba63b | 2657 | { |
1ce0a5fa | 2658 | if (ofconn_get_type(ofconn) == OFCONN_PRIMARY |
f4f1ea7e | 2659 | && ofconn_get_role(ofconn) == OFPCR12_ROLE_SLAVE) { |
90bf1e07 | 2660 | return OFPERR_OFPBRC_EPERM; |
9deba63b BP |
2661 | } else { |
2662 | return 0; | |
2663 | } | |
2664 | } | |
2665 | ||
e3b56933 JR |
2666 | /* Checks that the 'ofpacts_len' bytes of actions in 'ofpacts' are appropriate |
2667 | * for a packet with the prerequisites satisfied by 'flow' in table 'table_id'. | |
9cae45dc JR |
2668 | * 'flow' may be temporarily modified, but is restored at return. |
2669 | */ | |
2670 | static enum ofperr | |
2671 | ofproto_check_ofpacts(struct ofproto *ofproto, | |
2672 | const struct ofpact ofpacts[], size_t ofpacts_len, | |
e3b56933 | 2673 | struct flow *flow, uint8_t table_id) |
9cae45dc JR |
2674 | { |
2675 | enum ofperr error; | |
2676 | uint32_t mid; | |
2677 | ||
430dbb14 AW |
2678 | error = ofpacts_check(ofpacts, ofpacts_len, flow, |
2679 | u16_to_ofp(ofproto->max_ports), table_id); | |
9cae45dc JR |
2680 | if (error) { |
2681 | return error; | |
2682 | } | |
2683 | ||
d6fb622d | 2684 | mid = ofpacts_get_meter(ofpacts, ofpacts_len); |
9cae45dc JR |
2685 | if (mid && ofproto_get_provider_meter_id(ofproto, mid) == UINT32_MAX) { |
2686 | return OFPERR_OFPMMFC_INVALID_METER; | |
2687 | } | |
2688 | return 0; | |
2689 | } | |
2690 | ||
90bf1e07 | 2691 | static enum ofperr |
982697a4 | 2692 | handle_packet_out(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2693 | { |
64ff1d96 | 2694 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
c6a93eb7 BP |
2695 | struct ofputil_packet_out po; |
2696 | struct ofpbuf *payload; | |
f25d0cf3 BP |
2697 | uint64_t ofpacts_stub[1024 / 8]; |
2698 | struct ofpbuf ofpacts; | |
ae412e7d | 2699 | struct flow flow; |
4e022ec0 | 2700 | union flow_in_port in_port_; |
90bf1e07 | 2701 | enum ofperr error; |
064af421 | 2702 | |
ac51afaf BP |
2703 | COVERAGE_INC(ofproto_packet_out); |
2704 | ||
76589937 | 2705 | error = reject_slave_controller(ofconn); |
9deba63b | 2706 | if (error) { |
f25d0cf3 | 2707 | goto exit; |
9deba63b BP |
2708 | } |
2709 | ||
c6a93eb7 | 2710 | /* Decode message. */ |
f25d0cf3 | 2711 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
982697a4 | 2712 | error = ofputil_decode_packet_out(&po, oh, &ofpacts); |
064af421 | 2713 | if (error) { |
f25d0cf3 | 2714 | goto exit_free_ofpacts; |
064af421 | 2715 | } |
430dbb14 | 2716 | if (ofp_to_u16(po.in_port) >= p->max_ports |
4e022ec0 | 2717 | && ofp_to_u16(po.in_port) < ofp_to_u16(OFPP_MAX)) { |
2e1bfcb6 | 2718 | error = OFPERR_OFPBRC_BAD_PORT; |
91858960 BP |
2719 | goto exit_free_ofpacts; |
2720 | } | |
064af421 | 2721 | |
5cb7a798 | 2722 | |
ac51afaf | 2723 | /* Get payload. */ |
c6a93eb7 BP |
2724 | if (po.buffer_id != UINT32_MAX) { |
2725 | error = ofconn_pktbuf_retrieve(ofconn, po.buffer_id, &payload, NULL); | |
2726 | if (error || !payload) { | |
f25d0cf3 | 2727 | goto exit_free_ofpacts; |
064af421 | 2728 | } |
064af421 | 2729 | } else { |
bb622f82 BP |
2730 | /* Ensure that the L3 header is 32-bit aligned. */ |
2731 | payload = ofpbuf_clone_data_with_headroom(po.packet, po.packet_len, 2); | |
e1154f71 BP |
2732 | } |
2733 | ||
548de4dd | 2734 | /* Verify actions against packet, then send packet if successful. */ |
4e022ec0 AW |
2735 | in_port_.ofp_port = po.in_port; |
2736 | flow_extract(payload, 0, 0, NULL, &in_port_, &flow); | |
e3b56933 | 2737 | error = ofproto_check_ofpacts(p, po.ofpacts, po.ofpacts_len, &flow, 0); |
548de4dd BP |
2738 | if (!error) { |
2739 | error = p->ofproto_class->packet_out(p, payload, &flow, | |
2740 | po.ofpacts, po.ofpacts_len); | |
2741 | } | |
c6a93eb7 | 2742 | ofpbuf_delete(payload); |
abe529af | 2743 | |
f25d0cf3 BP |
2744 | exit_free_ofpacts: |
2745 | ofpbuf_uninit(&ofpacts); | |
2746 | exit: | |
abe529af | 2747 | return error; |
064af421 BP |
2748 | } |
2749 | ||
2750 | static void | |
9e1fd49b BP |
2751 | update_port_config(struct ofport *port, |
2752 | enum ofputil_port_config config, | |
2753 | enum ofputil_port_config mask) | |
064af421 | 2754 | { |
9e1fd49b BP |
2755 | enum ofputil_port_config old_config = port->pp.config; |
2756 | enum ofputil_port_config toggle; | |
abe529af | 2757 | |
9e1fd49b BP |
2758 | toggle = (config ^ port->pp.config) & mask; |
2759 | if (toggle & OFPUTIL_PC_PORT_DOWN) { | |
2760 | if (config & OFPUTIL_PC_PORT_DOWN) { | |
4b609110 | 2761 | netdev_turn_flags_off(port->netdev, NETDEV_UP, NULL); |
064af421 | 2762 | } else { |
4b609110 | 2763 | netdev_turn_flags_on(port->netdev, NETDEV_UP, NULL); |
064af421 | 2764 | } |
9e1fd49b | 2765 | toggle &= ~OFPUTIL_PC_PORT_DOWN; |
064af421 | 2766 | } |
abe529af | 2767 | |
9e1fd49b BP |
2768 | port->pp.config ^= toggle; |
2769 | if (port->pp.config != old_config) { | |
abe529af | 2770 | port->ofproto->ofproto_class->port_reconfigured(port, old_config); |
064af421 BP |
2771 | } |
2772 | } | |
2773 | ||
90bf1e07 | 2774 | static enum ofperr |
d1e2cf21 | 2775 | handle_port_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2776 | { |
64ff1d96 | 2777 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
9e1fd49b | 2778 | struct ofputil_port_mod pm; |
064af421 | 2779 | struct ofport *port; |
9e1fd49b | 2780 | enum ofperr error; |
064af421 | 2781 | |
76589937 | 2782 | error = reject_slave_controller(ofconn); |
9deba63b BP |
2783 | if (error) { |
2784 | return error; | |
2785 | } | |
064af421 | 2786 | |
9e1fd49b BP |
2787 | error = ofputil_decode_port_mod(oh, &pm); |
2788 | if (error) { | |
2789 | return error; | |
2790 | } | |
2791 | ||
2792 | port = ofproto_get_port(p, pm.port_no); | |
064af421 | 2793 | if (!port) { |
90bf1e07 | 2794 | return OFPERR_OFPPMFC_BAD_PORT; |
9e1fd49b | 2795 | } else if (!eth_addr_equals(port->pp.hw_addr, pm.hw_addr)) { |
90bf1e07 | 2796 | return OFPERR_OFPPMFC_BAD_HW_ADDR; |
064af421 | 2797 | } else { |
9e1fd49b BP |
2798 | update_port_config(port, pm.config, pm.mask); |
2799 | if (pm.advertise) { | |
2800 | netdev_set_advertisements(port->netdev, pm.advertise); | |
064af421 BP |
2801 | } |
2802 | } | |
2803 | return 0; | |
2804 | } | |
2805 | ||
90bf1e07 | 2806 | static enum ofperr |
3269c562 | 2807 | handle_desc_stats_request(struct ofconn *ofconn, |
982697a4 | 2808 | const struct ofp_header *request) |
064af421 | 2809 | { |
061bfea4 BP |
2810 | static const char *default_mfr_desc = "Nicira, Inc."; |
2811 | static const char *default_hw_desc = "Open vSwitch"; | |
2812 | static const char *default_sw_desc = VERSION; | |
2813 | static const char *default_serial_desc = "None"; | |
2814 | static const char *default_dp_desc = "None"; | |
2815 | ||
64ff1d96 | 2816 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 BP |
2817 | struct ofp_desc_stats *ods; |
2818 | struct ofpbuf *msg; | |
2819 | ||
982697a4 BP |
2820 | msg = ofpraw_alloc_stats_reply(request, 0); |
2821 | ods = ofpbuf_put_zeros(msg, sizeof *ods); | |
061bfea4 BP |
2822 | ovs_strlcpy(ods->mfr_desc, p->mfr_desc ? p->mfr_desc : default_mfr_desc, |
2823 | sizeof ods->mfr_desc); | |
2824 | ovs_strlcpy(ods->hw_desc, p->hw_desc ? p->hw_desc : default_hw_desc, | |
2825 | sizeof ods->hw_desc); | |
2826 | ovs_strlcpy(ods->sw_desc, p->sw_desc ? p->sw_desc : default_sw_desc, | |
2827 | sizeof ods->sw_desc); | |
2828 | ovs_strlcpy(ods->serial_num, | |
2829 | p->serial_desc ? p->serial_desc : default_serial_desc, | |
2830 | sizeof ods->serial_num); | |
2831 | ovs_strlcpy(ods->dp_desc, p->dp_desc ? p->dp_desc : default_dp_desc, | |
2832 | sizeof ods->dp_desc); | |
b0421aa2 | 2833 | ofconn_send_reply(ofconn, msg); |
064af421 BP |
2834 | |
2835 | return 0; | |
2836 | } | |
2837 | ||
90bf1e07 | 2838 | static enum ofperr |
3269c562 | 2839 | handle_table_stats_request(struct ofconn *ofconn, |
982697a4 | 2840 | const struct ofp_header *request) |
064af421 | 2841 | { |
64ff1d96 | 2842 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
307975da | 2843 | struct ofp12_table_stats *ots; |
064af421 | 2844 | struct ofpbuf *msg; |
c2f0373a | 2845 | int n_tables; |
6c1491fb | 2846 | size_t i; |
064af421 | 2847 | |
307975da SH |
2848 | /* Set up default values. |
2849 | * | |
2850 | * ofp12_table_stats is used as a generic structure as | |
2851 | * it is able to hold all the fields for ofp10_table_stats | |
2852 | * and ofp11_table_stats (and of course itself). | |
2853 | */ | |
2854 | ots = xcalloc(p->n_tables, sizeof *ots); | |
6c1491fb BP |
2855 | for (i = 0; i < p->n_tables; i++) { |
2856 | ots[i].table_id = i; | |
35aa7a21 | 2857 | sprintf(ots[i].name, "table%zu", i); |
307975da SH |
2858 | ots[i].match = htonll(OFPXMT12_MASK); |
2859 | ots[i].wildcards = htonll(OFPXMT12_MASK); | |
e78b61f6 BP |
2860 | ots[i].write_actions = htonl(OFPAT11_OUTPUT); |
2861 | ots[i].apply_actions = htonl(OFPAT11_OUTPUT); | |
307975da SH |
2862 | ots[i].write_setfields = htonll(OFPXMT12_MASK); |
2863 | ots[i].apply_setfields = htonll(OFPXMT12_MASK); | |
2864 | ots[i].metadata_match = htonll(UINT64_MAX); | |
2865 | ots[i].metadata_write = htonll(UINT64_MAX); | |
2866 | ots[i].instructions = htonl(OFPIT11_ALL); | |
2867 | ots[i].config = htonl(OFPTC11_TABLE_MISS_MASK); | |
6c1491fb | 2868 | ots[i].max_entries = htonl(1000000); /* An arbitrary big number. */ |
0b4f2078 | 2869 | ovs_rwlock_rdlock(&p->tables[i].cls.rwlock); |
d0918789 | 2870 | ots[i].active_count = htonl(classifier_count(&p->tables[i].cls)); |
0b4f2078 | 2871 | ovs_rwlock_unlock(&p->tables[i].cls.rwlock); |
6c1491fb | 2872 | } |
064af421 | 2873 | |
6c1491fb | 2874 | p->ofproto_class->get_tables(p, ots); |
064af421 | 2875 | |
c2f0373a BP |
2876 | /* Post-process the tables, dropping hidden tables. */ |
2877 | n_tables = p->n_tables; | |
254750ce BP |
2878 | for (i = 0; i < p->n_tables; i++) { |
2879 | const struct oftable *table = &p->tables[i]; | |
2880 | ||
c2f0373a BP |
2881 | if (table->flags & OFTABLE_HIDDEN) { |
2882 | n_tables = i; | |
2883 | break; | |
2884 | } | |
2885 | ||
254750ce BP |
2886 | if (table->name) { |
2887 | ovs_strzcpy(ots[i].name, table->name, sizeof ots[i].name); | |
2888 | } | |
2889 | ||
2890 | if (table->max_flows < ntohl(ots[i].max_entries)) { | |
2891 | ots[i].max_entries = htonl(table->max_flows); | |
2892 | } | |
2893 | } | |
2894 | ||
c2f0373a | 2895 | msg = ofputil_encode_table_stats_reply(ots, n_tables, request); |
b0421aa2 | 2896 | ofconn_send_reply(ofconn, msg); |
307975da SH |
2897 | |
2898 | free(ots); | |
2899 | ||
064af421 BP |
2900 | return 0; |
2901 | } | |
2902 | ||
abaad8cf | 2903 | static void |
63f2140a | 2904 | append_port_stat(struct ofport *port, struct list *replies) |
abaad8cf | 2905 | { |
f8e4867e | 2906 | struct ofputil_port_stats ops = { .port_no = port->pp.port_no }; |
abaad8cf | 2907 | |
65e0be10 BP |
2908 | calc_duration(port->created, time_msec(), |
2909 | &ops.duration_sec, &ops.duration_nsec); | |
2910 | ||
d295e8e9 JP |
2911 | /* Intentionally ignore return value, since errors will set |
2912 | * 'stats' to all-1s, which is correct for OpenFlow, and | |
abaad8cf | 2913 | * netdev_get_stats() will log errors. */ |
f8e4867e SH |
2914 | ofproto_port_get_stats(port, &ops.stats); |
2915 | ||
2916 | ofputil_append_port_stat(replies, &ops); | |
abaad8cf JP |
2917 | } |
2918 | ||
90bf1e07 | 2919 | static enum ofperr |
63f2140a | 2920 | handle_port_stats_request(struct ofconn *ofconn, |
982697a4 | 2921 | const struct ofp_header *request) |
064af421 | 2922 | { |
64ff1d96 | 2923 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 | 2924 | struct ofport *port; |
63f2140a | 2925 | struct list replies; |
4e022ec0 | 2926 | ofp_port_t port_no; |
f8e4867e SH |
2927 | enum ofperr error; |
2928 | ||
2929 | error = ofputil_decode_port_stats_request(request, &port_no); | |
2930 | if (error) { | |
2931 | return error; | |
2932 | } | |
064af421 | 2933 | |
982697a4 | 2934 | ofpmp_init(&replies, request); |
7f05e7ab | 2935 | if (port_no != OFPP_ANY) { |
f8e4867e | 2936 | port = ofproto_get_port(p, port_no); |
abaad8cf | 2937 | if (port) { |
63f2140a | 2938 | append_port_stat(port, &replies); |
abaad8cf JP |
2939 | } |
2940 | } else { | |
4e8e4213 | 2941 | HMAP_FOR_EACH (port, hmap_node, &p->ports) { |
63f2140a | 2942 | append_port_stat(port, &replies); |
abaad8cf | 2943 | } |
064af421 BP |
2944 | } |
2945 | ||
63f2140a | 2946 | ofconn_send_replies(ofconn, &replies); |
064af421 BP |
2947 | return 0; |
2948 | } | |
2949 | ||
2be393ed JP |
2950 | static enum ofperr |
2951 | handle_port_desc_stats_request(struct ofconn *ofconn, | |
982697a4 | 2952 | const struct ofp_header *request) |
2be393ed JP |
2953 | { |
2954 | struct ofproto *p = ofconn_get_ofproto(ofconn); | |
2e3fa633 | 2955 | enum ofp_version version; |
2be393ed JP |
2956 | struct ofport *port; |
2957 | struct list replies; | |
2958 | ||
982697a4 | 2959 | ofpmp_init(&replies, request); |
2be393ed | 2960 | |
2e3fa633 | 2961 | version = ofputil_protocol_to_ofp_version(ofconn_get_protocol(ofconn)); |
2be393ed | 2962 | HMAP_FOR_EACH (port, hmap_node, &p->ports) { |
2e3fa633 | 2963 | ofputil_append_port_desc_stats_reply(version, &port->pp, &replies); |
2be393ed JP |
2964 | } |
2965 | ||
2966 | ofconn_send_replies(ofconn, &replies); | |
2967 | return 0; | |
2968 | } | |
2969 | ||
98eaac36 JR |
2970 | static uint32_t |
2971 | hash_cookie(ovs_be64 cookie) | |
2972 | { | |
2973 | return hash_2words((OVS_FORCE uint64_t)cookie >> 32, | |
2974 | (OVS_FORCE uint64_t)cookie); | |
2975 | } | |
2976 | ||
2977 | static void | |
2978 | cookies_insert(struct ofproto *ofproto, struct rule *rule) | |
2c916028 | 2979 | OVS_REQUIRES(ofproto_mutex) |
98eaac36 JR |
2980 | { |
2981 | hindex_insert(&ofproto->cookies, &rule->cookie_node, | |
2982 | hash_cookie(rule->flow_cookie)); | |
2983 | } | |
2984 | ||
2985 | static void | |
2986 | cookies_remove(struct ofproto *ofproto, struct rule *rule) | |
2c916028 | 2987 | OVS_REQUIRES(ofproto_mutex) |
98eaac36 JR |
2988 | { |
2989 | hindex_remove(&ofproto->cookies, &rule->cookie_node); | |
2990 | } | |
2991 | ||
2992 | static void | |
2993 | ofproto_rule_change_cookie(struct ofproto *ofproto, struct rule *rule, | |
2994 | ovs_be64 new_cookie) | |
2995 | { | |
2996 | if (new_cookie != rule->flow_cookie) { | |
2c916028 | 2997 | ovs_mutex_lock(&ofproto_mutex); |
98eaac36 JR |
2998 | cookies_remove(ofproto, rule); |
2999 | ||
c7c9a7c8 | 3000 | ovs_mutex_lock(&rule->mutex); |
98eaac36 | 3001 | rule->flow_cookie = new_cookie; |
c7c9a7c8 | 3002 | ovs_mutex_unlock(&rule->mutex); |
98eaac36 JR |
3003 | |
3004 | cookies_insert(ofproto, rule); | |
2c916028 | 3005 | ovs_mutex_unlock(&ofproto_mutex); |
98eaac36 JR |
3006 | } |
3007 | } | |
3008 | ||
c6ebb8fb | 3009 | static void |
65e0be10 BP |
3010 | calc_duration(long long int start, long long int now, |
3011 | uint32_t *sec, uint32_t *nsec) | |
c6ebb8fb | 3012 | { |
f27f2134 | 3013 | long long int msecs = now - start; |
588cd7b5 BP |
3014 | *sec = msecs / 1000; |
3015 | *nsec = (msecs % 1000) * (1000 * 1000); | |
3016 | } | |
3017 | ||
48266274 BP |
3018 | /* Checks whether 'table_id' is 0xff or a valid table ID in 'ofproto'. Returns |
3019 | * 0 if 'table_id' is OK, otherwise an OpenFlow error code. */ | |
90bf1e07 | 3020 | static enum ofperr |
48266274 BP |
3021 | check_table_id(const struct ofproto *ofproto, uint8_t table_id) |
3022 | { | |
3023 | return (table_id == 0xff || table_id < ofproto->n_tables | |
3024 | ? 0 | |
c22c56bd | 3025 | : OFPERR_OFPBRC_BAD_TABLE_ID); |
48266274 BP |
3026 | |
3027 | } | |
3028 | ||
5c67e4af | 3029 | static struct oftable * |
d4ce8a49 | 3030 | next_visible_table(const struct ofproto *ofproto, uint8_t table_id) |
5c67e4af BP |
3031 | { |
3032 | struct oftable *table; | |
3033 | ||
3034 | for (table = &ofproto->tables[table_id]; | |
3035 | table < &ofproto->tables[ofproto->n_tables]; | |
3036 | table++) { | |
3037 | if (!(table->flags & OFTABLE_HIDDEN)) { | |
3038 | return table; | |
3039 | } | |
3040 | } | |
3041 | ||
3042 | return NULL; | |
3043 | } | |
3044 | ||
d0918789 | 3045 | static struct oftable * |
d4ce8a49 | 3046 | first_matching_table(const struct ofproto *ofproto, uint8_t table_id) |
064af421 | 3047 | { |
6c1491fb | 3048 | if (table_id == 0xff) { |
5c67e4af | 3049 | return next_visible_table(ofproto, 0); |
6c1491fb BP |
3050 | } else if (table_id < ofproto->n_tables) { |
3051 | return &ofproto->tables[table_id]; | |
a02e5331 | 3052 | } else { |
6c1491fb | 3053 | return NULL; |
a02e5331 | 3054 | } |
064af421 BP |
3055 | } |
3056 | ||
d0918789 | 3057 | static struct oftable * |
d4ce8a49 BP |
3058 | next_matching_table(const struct ofproto *ofproto, |
3059 | const struct oftable *table, uint8_t table_id) | |
6c1491fb | 3060 | { |
5c67e4af BP |
3061 | return (table_id == 0xff |
3062 | ? next_visible_table(ofproto, (table - ofproto->tables) + 1) | |
6c1491fb BP |
3063 | : NULL); |
3064 | } | |
3065 | ||
d0918789 | 3066 | /* Assigns TABLE to each oftable, in turn, that matches TABLE_ID in OFPROTO: |
6c1491fb BP |
3067 | * |
3068 | * - If TABLE_ID is 0xff, this iterates over every classifier table in | |
5c67e4af | 3069 | * OFPROTO, skipping tables marked OFTABLE_HIDDEN. |
6c1491fb BP |
3070 | * |
3071 | * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates | |
5c67e4af BP |
3072 | * only once, for that table. (This can be used to access tables marked |
3073 | * OFTABLE_HIDDEN.) | |
6c1491fb | 3074 | * |
48266274 BP |
3075 | * - Otherwise, TABLE_ID isn't valid for OFPROTO, so the loop won't be |
3076 | * entered at all. (Perhaps you should have validated TABLE_ID with | |
3077 | * check_table_id().) | |
6c1491fb BP |
3078 | * |
3079 | * All parameters are evaluated multiple times. | |
3080 | */ | |
d0918789 BP |
3081 | #define FOR_EACH_MATCHING_TABLE(TABLE, TABLE_ID, OFPROTO) \ |
3082 | for ((TABLE) = first_matching_table(OFPROTO, TABLE_ID); \ | |
3083 | (TABLE) != NULL; \ | |
3084 | (TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID)) | |
6c1491fb | 3085 | |
a9b22b7f BP |
3086 | /* Initializes 'criteria' in a straightforward way based on the other |
3087 | * parameters. | |
3088 | * | |
3089 | * For "loose" matching, the 'priority' parameter is unimportant and may be | |
3090 | * supplied as 0. */ | |
3091 | static void | |
3092 | rule_criteria_init(struct rule_criteria *criteria, uint8_t table_id, | |
3093 | const struct match *match, unsigned int priority, | |
3094 | ovs_be64 cookie, ovs_be64 cookie_mask, | |
3095 | ofp_port_t out_port, uint32_t out_group) | |
3096 | { | |
3097 | criteria->table_id = table_id; | |
3098 | cls_rule_init(&criteria->cr, match, priority); | |
3099 | criteria->cookie = cookie; | |
3100 | criteria->cookie_mask = cookie_mask; | |
3101 | criteria->out_port = out_port; | |
3102 | criteria->out_group = out_group; | |
3103 | } | |
3104 | ||
3105 | static void | |
3106 | rule_criteria_destroy(struct rule_criteria *criteria) | |
3107 | { | |
3108 | cls_rule_destroy(&criteria->cr); | |
3109 | } | |
3110 | ||
a8e547c1 BP |
3111 | void |
3112 | rule_collection_init(struct rule_collection *rules) | |
3113 | { | |
3114 | rules->rules = rules->stub; | |
3115 | rules->n = 0; | |
3116 | rules->capacity = ARRAY_SIZE(rules->stub); | |
3117 | } | |
3118 | ||
3119 | void | |
3120 | rule_collection_add(struct rule_collection *rules, struct rule *rule) | |
3121 | { | |
3122 | if (rules->n >= rules->capacity) { | |
3123 | size_t old_size, new_size; | |
3124 | ||
3125 | old_size = rules->capacity * sizeof *rules->rules; | |
3126 | rules->capacity *= 2; | |
3127 | new_size = rules->capacity * sizeof *rules->rules; | |
3128 | ||
3129 | if (rules->rules == rules->stub) { | |
3130 | rules->rules = xmalloc(new_size); | |
3131 | memcpy(rules->rules, rules->stub, old_size); | |
3132 | } else { | |
3133 | rules->rules = xrealloc(rules->rules, new_size); | |
3134 | } | |
3135 | } | |
3136 | ||
3137 | rules->rules[rules->n++] = rule; | |
3138 | } | |
3139 | ||
3140 | void | |
3141 | rule_collection_destroy(struct rule_collection *rules) | |
3142 | { | |
3143 | if (rules->rules != rules->stub) { | |
3144 | free(rules->rules); | |
3145 | } | |
3146 | } | |
3147 | ||
6c1d7642 | 3148 | static enum ofperr |
a9b22b7f | 3149 | collect_rule(struct rule *rule, const struct rule_criteria *c, |
a8e547c1 | 3150 | struct rule_collection *rules) |
6c1d7642 BP |
3151 | { |
3152 | if (ofproto_rule_is_hidden(rule)) { | |
3153 | return 0; | |
3154 | } else if (rule->pending) { | |
3155 | return OFPROTO_POSTPONE; | |
3156 | } else { | |
a9b22b7f BP |
3157 | if ((c->table_id == rule->table_id || c->table_id == 0xff) |
3158 | && ofproto_rule_has_out_port(rule, c->out_port) | |
3159 | && ofproto_rule_has_out_group(rule, c->out_group) | |
3160 | && !((rule->flow_cookie ^ c->cookie) & c->cookie_mask)) { | |
a8e547c1 | 3161 | rule_collection_add(rules, rule); |
6c1d7642 BP |
3162 | } |
3163 | return 0; | |
3164 | } | |
3165 | } | |
3166 | ||
a9b22b7f BP |
3167 | /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches |
3168 | * on classifiers rules are done in the "loose" way required for OpenFlow | |
3169 | * OFPFC_MODIFY and OFPFC_DELETE requests. Puts the selected rules on list | |
9ed18e46 BP |
3170 | * 'rules'. |
3171 | * | |
9ed18e46 BP |
3172 | * Hidden rules are always omitted. |
3173 | * | |
3174 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 3175 | static enum ofperr |
a9b22b7f | 3176 | collect_rules_loose(struct ofproto *ofproto, |
a8e547c1 BP |
3177 | const struct rule_criteria *criteria, |
3178 | struct rule_collection *rules) | |
9ed18e46 | 3179 | { |
d0918789 | 3180 | struct oftable *table; |
90bf1e07 | 3181 | enum ofperr error; |
48266274 | 3182 | |
a8e547c1 BP |
3183 | rule_collection_init(rules); |
3184 | ||
a9b22b7f | 3185 | error = check_table_id(ofproto, criteria->table_id); |
48266274 | 3186 | if (error) { |
a8e547c1 | 3187 | goto exit; |
48266274 | 3188 | } |
9ed18e46 | 3189 | |
a9b22b7f | 3190 | if (criteria->cookie_mask == htonll(UINT64_MAX)) { |
98eaac36 JR |
3191 | struct rule *rule; |
3192 | ||
2c916028 | 3193 | ovs_mutex_lock(&ofproto_mutex); |
a9b22b7f BP |
3194 | HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node, |
3195 | hash_cookie(criteria->cookie), | |
98eaac36 | 3196 | &ofproto->cookies) { |
a9b22b7f BP |
3197 | if (cls_rule_is_loose_match(&rule->cr, &criteria->cr.match)) { |
3198 | error = collect_rule(rule, criteria, rules); | |
6c1d7642 BP |
3199 | if (error) { |
3200 | break; | |
98eaac36 JR |
3201 | } |
3202 | } | |
3203 | } | |
2c916028 | 3204 | ovs_mutex_unlock(&ofproto_mutex); |
6c1d7642 | 3205 | } else { |
a9b22b7f | 3206 | FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) { |
6c1d7642 BP |
3207 | struct cls_cursor cursor; |
3208 | struct rule *rule; | |
9ed18e46 | 3209 | |
6c1d7642 | 3210 | ovs_rwlock_rdlock(&table->cls.rwlock); |
a9b22b7f | 3211 | cls_cursor_init(&cursor, &table->cls, &criteria->cr); |
6c1d7642 | 3212 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
a9b22b7f | 3213 | error = collect_rule(rule, criteria, rules); |
6c1d7642 BP |
3214 | if (error) { |
3215 | break; | |
3216 | } | |
9ed18e46 | 3217 | } |
6c1d7642 | 3218 | ovs_rwlock_unlock(&table->cls.rwlock); |
9ed18e46 BP |
3219 | } |
3220 | } | |
48d28ac1 | 3221 | |
a8e547c1 BP |
3222 | exit: |
3223 | if (error) { | |
3224 | rule_collection_destroy(rules); | |
3225 | } | |
48d28ac1 | 3226 | return error; |
9ed18e46 BP |
3227 | } |
3228 | ||
a9b22b7f BP |
3229 | /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches |
3230 | * on classifiers rules are done in the "strict" way required for OpenFlow | |
3231 | * OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests. Puts the selected | |
3232 | * rules on list 'rules'. | |
9ed18e46 BP |
3233 | * |
3234 | * Hidden rules are always omitted. | |
3235 | * | |
3236 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 3237 | static enum ofperr |
a9b22b7f | 3238 | collect_rules_strict(struct ofproto *ofproto, |
a8e547c1 BP |
3239 | const struct rule_criteria *criteria, |
3240 | struct rule_collection *rules) | |
9ed18e46 | 3241 | { |
d0918789 | 3242 | struct oftable *table; |
48266274 BP |
3243 | int error; |
3244 | ||
a8e547c1 BP |
3245 | rule_collection_init(rules); |
3246 | ||
a9b22b7f | 3247 | error = check_table_id(ofproto, criteria->table_id); |
48266274 | 3248 | if (error) { |
a8e547c1 | 3249 | goto exit; |
48266274 | 3250 | } |
9ed18e46 | 3251 | |
a9b22b7f | 3252 | if (criteria->cookie_mask == htonll(UINT64_MAX)) { |
98eaac36 JR |
3253 | struct rule *rule; |
3254 | ||
2c916028 | 3255 | ovs_mutex_lock(&ofproto_mutex); |
a9b22b7f BP |
3256 | HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node, |
3257 | hash_cookie(criteria->cookie), | |
98eaac36 | 3258 | &ofproto->cookies) { |
a9b22b7f BP |
3259 | if (cls_rule_equal(&rule->cr, &criteria->cr)) { |
3260 | error = collect_rule(rule, criteria, rules); | |
6c1d7642 BP |
3261 | if (error) { |
3262 | break; | |
98eaac36 JR |
3263 | } |
3264 | } | |
3265 | } | |
2c916028 | 3266 | ovs_mutex_unlock(&ofproto_mutex); |
6c1d7642 | 3267 | } else { |
a9b22b7f | 3268 | FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) { |
6c1d7642 | 3269 | struct rule *rule; |
9ed18e46 | 3270 | |
6c1d7642 | 3271 | ovs_rwlock_rdlock(&table->cls.rwlock); |
a9b22b7f BP |
3272 | rule = rule_from_cls_rule(classifier_find_rule_exactly( |
3273 | &table->cls, &criteria->cr)); | |
6c1d7642 BP |
3274 | ovs_rwlock_unlock(&table->cls.rwlock); |
3275 | if (rule) { | |
a9b22b7f | 3276 | error = collect_rule(rule, criteria, rules); |
6c1d7642 BP |
3277 | if (error) { |
3278 | break; | |
3279 | } | |
9ed18e46 BP |
3280 | } |
3281 | } | |
3282 | } | |
48d28ac1 | 3283 | |
a8e547c1 BP |
3284 | exit: |
3285 | if (error) { | |
3286 | rule_collection_destroy(rules); | |
3287 | } | |
6c1d7642 | 3288 | return error; |
9ed18e46 BP |
3289 | } |
3290 | ||
f27f2134 BP |
3291 | /* Returns 'age_ms' (a duration in milliseconds), converted to seconds and |
3292 | * forced into the range of a uint16_t. */ | |
3293 | static int | |
3294 | age_secs(long long int age_ms) | |
3295 | { | |
3296 | return (age_ms < 0 ? 0 | |
3297 | : age_ms >= UINT16_MAX * 1000 ? UINT16_MAX | |
3298 | : (unsigned int) age_ms / 1000); | |
3299 | } | |
3300 | ||
90bf1e07 | 3301 | static enum ofperr |
63f2140a | 3302 | handle_flow_stats_request(struct ofconn *ofconn, |
982697a4 | 3303 | const struct ofp_header *request) |
064af421 | 3304 | { |
64ff1d96 | 3305 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 3306 | struct ofputil_flow_stats_request fsr; |
a9b22b7f | 3307 | struct rule_criteria criteria; |
a8e547c1 | 3308 | struct rule_collection rules; |
63f2140a | 3309 | struct list replies; |
90bf1e07 | 3310 | enum ofperr error; |
a8e547c1 | 3311 | size_t i; |
09246b99 | 3312 | |
982697a4 | 3313 | error = ofputil_decode_flow_stats_request(&fsr, request); |
09246b99 BP |
3314 | if (error) { |
3315 | return error; | |
3316 | } | |
3317 | ||
a9b22b7f BP |
3318 | rule_criteria_init(&criteria, fsr.table_id, &fsr.match, 0, fsr.cookie, |
3319 | fsr.cookie_mask, fsr.out_port, fsr.out_group); | |
3320 | error = collect_rules_loose(ofproto, &criteria, &rules); | |
3321 | rule_criteria_destroy(&criteria); | |
9ed18e46 BP |
3322 | if (error) { |
3323 | return error; | |
3324 | } | |
5ecc9d81 | 3325 | |
982697a4 | 3326 | ofpmp_init(&replies, request); |
a8e547c1 BP |
3327 | for (i = 0; i < rules.n; i++) { |
3328 | struct rule *rule = rules.rules[i]; | |
f27f2134 | 3329 | long long int now = time_msec(); |
9ed18e46 BP |
3330 | struct ofputil_flow_stats fs; |
3331 | ||
5cb7a798 | 3332 | minimatch_expand(&rule->cr.match, &fs.match); |
81a76618 | 3333 | fs.priority = rule->cr.priority; |
9ed18e46 BP |
3334 | fs.cookie = rule->flow_cookie; |
3335 | fs.table_id = rule->table_id; | |
65e0be10 | 3336 | calc_duration(rule->created, now, &fs.duration_sec, &fs.duration_nsec); |
f27f2134 BP |
3337 | fs.idle_age = age_secs(now - rule->used); |
3338 | fs.hard_age = age_secs(now - rule->modified); | |
9ed18e46 BP |
3339 | ofproto->ofproto_class->rule_get_stats(rule, &fs.packet_count, |
3340 | &fs.byte_count); | |
6f00e29b BP |
3341 | fs.ofpacts = rule->actions->ofpacts; |
3342 | fs.ofpacts_len = rule->actions->ofpacts_len; | |
a3779dbc | 3343 | |
d10976b7 | 3344 | ovs_mutex_lock(&rule->mutex); |
a3779dbc EJ |
3345 | fs.idle_timeout = rule->idle_timeout; |
3346 | fs.hard_timeout = rule->hard_timeout; | |
d10976b7 | 3347 | ovs_mutex_unlock(&rule->mutex); |
a3779dbc | 3348 | |
3f517bcd DB |
3349 | fs.flags = rule->flags; |
3350 | ||
9ed18e46 | 3351 | ofputil_append_flow_stats_reply(&fs, &replies); |
3c4486a5 | 3352 | } |
a8e547c1 BP |
3353 | rule_collection_destroy(&rules); |
3354 | ||
63f2140a | 3355 | ofconn_send_replies(ofconn, &replies); |
5ecc9d81 | 3356 | |
09246b99 BP |
3357 | return 0; |
3358 | } | |
3359 | ||
4f2cad2c | 3360 | static void |
3394b5b6 | 3361 | flow_stats_ds(struct rule *rule, struct ds *results) |
4f2cad2c | 3362 | { |
4f2cad2c | 3363 | uint64_t packet_count, byte_count; |
4f2cad2c | 3364 | |
abe529af BP |
3365 | rule->ofproto->ofproto_class->rule_get_stats(rule, |
3366 | &packet_count, &byte_count); | |
4f2cad2c | 3367 | |
6c1491fb BP |
3368 | if (rule->table_id != 0) { |
3369 | ds_put_format(results, "table_id=%"PRIu8", ", rule->table_id); | |
3370 | } | |
4f2cad2c JP |
3371 | ds_put_format(results, "duration=%llds, ", |
3372 | (time_msec() - rule->created) / 1000); | |
52ae00b3 | 3373 | ds_put_format(results, "priority=%u, ", rule->cr.priority); |
4f2cad2c JP |
3374 | ds_put_format(results, "n_packets=%"PRIu64", ", packet_count); |
3375 | ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count); | |
cb833cf6 | 3376 | cls_rule_format(&rule->cr, results); |
a5df0e72 | 3377 | ds_put_char(results, ','); |
6f00e29b BP |
3378 | ofpacts_format(rule->actions->ofpacts, rule->actions->ofpacts_len, |
3379 | results); | |
4f2cad2c JP |
3380 | ds_put_cstr(results, "\n"); |
3381 | } | |
3382 | ||
d295e8e9 | 3383 | /* Adds a pretty-printed description of all flows to 'results', including |
ee8b231c | 3384 | * hidden flows (e.g., set up by in-band control). */ |
4f2cad2c JP |
3385 | void |
3386 | ofproto_get_all_flows(struct ofproto *p, struct ds *results) | |
3387 | { | |
d0918789 | 3388 | struct oftable *table; |
6c1491fb | 3389 | |
d0918789 | 3390 | OFPROTO_FOR_EACH_TABLE (table, p) { |
6c1491fb BP |
3391 | struct cls_cursor cursor; |
3392 | struct rule *rule; | |
064af421 | 3393 | |
0b4f2078 | 3394 | ovs_rwlock_rdlock(&table->cls.rwlock); |
d0918789 | 3395 | cls_cursor_init(&cursor, &table->cls, NULL); |
6c1491fb BP |
3396 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
3397 | flow_stats_ds(rule, results); | |
3398 | } | |
0b4f2078 | 3399 | ovs_rwlock_unlock(&table->cls.rwlock); |
064af421 | 3400 | } |
064af421 BP |
3401 | } |
3402 | ||
b5827b24 BP |
3403 | /* Obtains the NetFlow engine type and engine ID for 'ofproto' into |
3404 | * '*engine_type' and '*engine_id', respectively. */ | |
3405 | void | |
3406 | ofproto_get_netflow_ids(const struct ofproto *ofproto, | |
3407 | uint8_t *engine_type, uint8_t *engine_id) | |
3408 | { | |
abe529af | 3409 | ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id); |
b5827b24 BP |
3410 | } |
3411 | ||
9a9e3786 BP |
3412 | /* Checks the status of CFM configured on 'ofp_port' within 'ofproto'. Returns |
3413 | * true if the port's CFM status was successfully stored into '*status'. | |
3414 | * Returns false if the port did not have CFM configured, in which case | |
3415 | * '*status' is indeterminate. | |
3416 | * | |
13b1b2ae | 3417 | * The caller must provide and owns '*status', and must free 'status->rmps'. */ |
9a9e3786 | 3418 | bool |
4e022ec0 | 3419 | ofproto_port_get_cfm_status(const struct ofproto *ofproto, ofp_port_t ofp_port, |
9a9e3786 | 3420 | struct ofproto_cfm_status *status) |
3967a833 MM |
3421 | { |
3422 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
9a9e3786 BP |
3423 | return (ofport |
3424 | && ofproto->ofproto_class->get_cfm_status | |
3425 | && ofproto->ofproto_class->get_cfm_status(ofport, status)); | |
3967a833 MM |
3426 | } |
3427 | ||
90bf1e07 | 3428 | static enum ofperr |
76c93b22 | 3429 | handle_aggregate_stats_request(struct ofconn *ofconn, |
982697a4 | 3430 | const struct ofp_header *oh) |
27d34fce | 3431 | { |
76c93b22 | 3432 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 3433 | struct ofputil_flow_stats_request request; |
76c93b22 | 3434 | struct ofputil_aggregate_stats stats; |
5e9d0469 | 3435 | bool unknown_packets, unknown_bytes; |
a9b22b7f | 3436 | struct rule_criteria criteria; |
a8e547c1 | 3437 | struct rule_collection rules; |
76c93b22 | 3438 | struct ofpbuf *reply; |
90bf1e07 | 3439 | enum ofperr error; |
a8e547c1 | 3440 | size_t i; |
27d34fce | 3441 | |
982697a4 | 3442 | error = ofputil_decode_flow_stats_request(&request, oh); |
76c93b22 BP |
3443 | if (error) { |
3444 | return error; | |
3445 | } | |
5ecc9d81 | 3446 | |
a9b22b7f BP |
3447 | rule_criteria_init(&criteria, request.table_id, &request.match, 0, |
3448 | request.cookie, request.cookie_mask, | |
3449 | request.out_port, request.out_group); | |
3450 | error = collect_rules_loose(ofproto, &criteria, &rules); | |
3451 | rule_criteria_destroy(&criteria); | |
9ed18e46 BP |
3452 | if (error) { |
3453 | return error; | |
3454 | } | |
3c4486a5 | 3455 | |
9ed18e46 | 3456 | memset(&stats, 0, sizeof stats); |
5e9d0469 | 3457 | unknown_packets = unknown_bytes = false; |
a8e547c1 BP |
3458 | for (i = 0; i < rules.n; i++) { |
3459 | struct rule *rule = rules.rules[i]; | |
9ed18e46 BP |
3460 | uint64_t packet_count; |
3461 | uint64_t byte_count; | |
5ecc9d81 | 3462 | |
9ed18e46 BP |
3463 | ofproto->ofproto_class->rule_get_stats(rule, &packet_count, |
3464 | &byte_count); | |
5ecc9d81 | 3465 | |
5e9d0469 BP |
3466 | if (packet_count == UINT64_MAX) { |
3467 | unknown_packets = true; | |
3468 | } else { | |
3469 | stats.packet_count += packet_count; | |
3470 | } | |
3471 | ||
3472 | if (byte_count == UINT64_MAX) { | |
3473 | unknown_bytes = true; | |
3474 | } else { | |
3475 | stats.byte_count += byte_count; | |
3476 | } | |
3477 | ||
9ed18e46 | 3478 | stats.flow_count++; |
3c4486a5 | 3479 | } |
5e9d0469 BP |
3480 | if (unknown_packets) { |
3481 | stats.packet_count = UINT64_MAX; | |
3482 | } | |
3483 | if (unknown_bytes) { | |
3484 | stats.byte_count = UINT64_MAX; | |
3485 | } | |
27d34fce | 3486 | |
a8e547c1 BP |
3487 | rule_collection_destroy(&rules); |
3488 | ||
982697a4 | 3489 | reply = ofputil_encode_aggregate_stats_reply(&stats, oh); |
76c93b22 | 3490 | ofconn_send_reply(ofconn, reply); |
09246b99 BP |
3491 | |
3492 | return 0; | |
3493 | } | |
3494 | ||
c1c9c9c4 | 3495 | struct queue_stats_cbdata { |
ca0f572c | 3496 | struct ofport *ofport; |
63f2140a | 3497 | struct list replies; |
6dc34a0d | 3498 | long long int now; |
c1c9c9c4 BP |
3499 | }; |
3500 | ||
3501 | static void | |
db9220c3 | 3502 | put_queue_stats(struct queue_stats_cbdata *cbdata, uint32_t queue_id, |
c1c9c9c4 BP |
3503 | const struct netdev_queue_stats *stats) |
3504 | { | |
6dc34a0d | 3505 | struct ofputil_queue_stats oqs; |
c1c9c9c4 | 3506 | |
6dc34a0d BP |
3507 | oqs.port_no = cbdata->ofport->pp.port_no; |
3508 | oqs.queue_id = queue_id; | |
3509 | oqs.tx_bytes = stats->tx_bytes; | |
3510 | oqs.tx_packets = stats->tx_packets; | |
3511 | oqs.tx_errors = stats->tx_errors; | |
3512 | if (stats->created != LLONG_MIN) { | |
3513 | calc_duration(stats->created, cbdata->now, | |
3514 | &oqs.duration_sec, &oqs.duration_nsec); | |
3515 | } else { | |
3516 | oqs.duration_sec = oqs.duration_nsec = UINT32_MAX; | |
3517 | } | |
64626975 | 3518 | ofputil_append_queue_stat(&cbdata->replies, &oqs); |
c1c9c9c4 BP |
3519 | } |
3520 | ||
3521 | static void | |
db9220c3 | 3522 | handle_queue_stats_dump_cb(uint32_t queue_id, |
c1c9c9c4 BP |
3523 | struct netdev_queue_stats *stats, |
3524 | void *cbdata_) | |
3525 | { | |
3526 | struct queue_stats_cbdata *cbdata = cbdata_; | |
3527 | ||
3528 | put_queue_stats(cbdata, queue_id, stats); | |
3529 | } | |
3530 | ||
0414d158 | 3531 | static enum ofperr |
ca0f572c | 3532 | handle_queue_stats_for_port(struct ofport *port, uint32_t queue_id, |
c1c9c9c4 BP |
3533 | struct queue_stats_cbdata *cbdata) |
3534 | { | |
ca0f572c | 3535 | cbdata->ofport = port; |
c1c9c9c4 BP |
3536 | if (queue_id == OFPQ_ALL) { |
3537 | netdev_dump_queue_stats(port->netdev, | |
3538 | handle_queue_stats_dump_cb, cbdata); | |
3539 | } else { | |
3540 | struct netdev_queue_stats stats; | |
3541 | ||
1ac788f6 BP |
3542 | if (!netdev_get_queue_stats(port->netdev, queue_id, &stats)) { |
3543 | put_queue_stats(cbdata, queue_id, &stats); | |
0414d158 BP |
3544 | } else { |
3545 | return OFPERR_OFPQOFC_BAD_QUEUE; | |
1ac788f6 | 3546 | } |
c1c9c9c4 | 3547 | } |
0414d158 | 3548 | return 0; |
c1c9c9c4 BP |
3549 | } |
3550 | ||
90bf1e07 | 3551 | static enum ofperr |
63f2140a | 3552 | handle_queue_stats_request(struct ofconn *ofconn, |
982697a4 | 3553 | const struct ofp_header *rq) |
c1c9c9c4 | 3554 | { |
64ff1d96 | 3555 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
c1c9c9c4 | 3556 | struct queue_stats_cbdata cbdata; |
0414d158 | 3557 | struct ofport *port; |
0414d158 | 3558 | enum ofperr error; |
64626975 | 3559 | struct ofputil_queue_stats_request oqsr; |
c1c9c9c4 | 3560 | |
c1c9c9c4 BP |
3561 | COVERAGE_INC(ofproto_queue_req); |
3562 | ||
982697a4 | 3563 | ofpmp_init(&cbdata.replies, rq); |
6dc34a0d | 3564 | cbdata.now = time_msec(); |
c1c9c9c4 | 3565 | |
64626975 SH |
3566 | error = ofputil_decode_queue_stats_request(rq, &oqsr); |
3567 | if (error) { | |
3568 | return error; | |
3569 | } | |
3570 | ||
7f05e7ab | 3571 | if (oqsr.port_no == OFPP_ANY) { |
0414d158 | 3572 | error = OFPERR_OFPQOFC_BAD_QUEUE; |
4e8e4213 | 3573 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
64626975 | 3574 | if (!handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata)) { |
0414d158 BP |
3575 | error = 0; |
3576 | } | |
c1c9c9c4 | 3577 | } |
0414d158 | 3578 | } else { |
64626975 | 3579 | port = ofproto_get_port(ofproto, oqsr.port_no); |
0414d158 | 3580 | error = (port |
64626975 | 3581 | ? handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata) |
0414d158 BP |
3582 | : OFPERR_OFPQOFC_BAD_PORT); |
3583 | } | |
3584 | if (!error) { | |
3585 | ofconn_send_replies(ofconn, &cbdata.replies); | |
c1c9c9c4 | 3586 | } else { |
63f2140a | 3587 | ofpbuf_list_delete(&cbdata.replies); |
c1c9c9c4 | 3588 | } |
c1c9c9c4 | 3589 | |
0414d158 | 3590 | return error; |
c1c9c9c4 | 3591 | } |
7ee20df1 BP |
3592 | |
3593 | static bool | |
3594 | is_flow_deletion_pending(const struct ofproto *ofproto, | |
3595 | const struct cls_rule *cls_rule, | |
3596 | uint8_t table_id) | |
3597 | { | |
3598 | if (!hmap_is_empty(&ofproto->deletions)) { | |
3599 | struct ofoperation *op; | |
3600 | ||
3601 | HMAP_FOR_EACH_WITH_HASH (op, hmap_node, | |
3602 | cls_rule_hash(cls_rule, table_id), | |
3603 | &ofproto->deletions) { | |
3604 | if (cls_rule_equal(cls_rule, &op->rule->cr)) { | |
3605 | return true; | |
3606 | } | |
3607 | } | |
3608 | } | |
3609 | ||
3610 | return false; | |
3611 | } | |
3612 | ||
8037acb4 BP |
3613 | static enum ofperr |
3614 | evict_rule_from_table(struct ofproto *ofproto, struct oftable *table) | |
3615 | { | |
3616 | struct rule *rule; | |
3617 | size_t n_rules; | |
3618 | ||
3619 | ovs_rwlock_rdlock(&table->cls.rwlock); | |
3620 | n_rules = classifier_count(&table->cls); | |
3621 | ovs_rwlock_unlock(&table->cls.rwlock); | |
3622 | ||
3623 | if (n_rules < table->max_flows) { | |
3624 | return 0; | |
3625 | } else if (!choose_rule_to_evict(table, &rule)) { | |
3626 | return OFPERR_OFPFMFC_TABLE_FULL; | |
3627 | } else if (rule->pending) { | |
c7c9a7c8 | 3628 | ovs_mutex_unlock(&rule->mutex); |
8037acb4 BP |
3629 | return OFPROTO_POSTPONE; |
3630 | } else { | |
3631 | struct ofopgroup *group; | |
3632 | ||
3633 | group = ofopgroup_create_unattached(ofproto); | |
3634 | delete_flow__(rule, group, OFPRR_EVICTION); | |
3635 | ofopgroup_submit(group); | |
3636 | ||
3637 | return 0; | |
3638 | } | |
3639 | } | |
3640 | ||
79eee1eb BP |
3641 | /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT |
3642 | * in which no matching flow already exists in the flow table. | |
3643 | * | |
3644 | * Adds the flow specified by 'ofm', which is followed by 'n_actions' | |
75a75043 | 3645 | * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow |
90bf1e07 BP |
3646 | * error code on failure, or OFPROTO_POSTPONE if the operation cannot be |
3647 | * initiated now but may be retried later. | |
79eee1eb | 3648 | * |
2509616e | 3649 | * The caller retains ownership of 'fm->ofpacts'. |
f25d0cf3 | 3650 | * |
79eee1eb BP |
3651 | * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id, |
3652 | * if any. */ | |
90bf1e07 | 3653 | static enum ofperr |
a9a2da38 | 3654 | add_flow(struct ofproto *ofproto, struct ofconn *ofconn, |
e3b56933 | 3655 | struct ofputil_flow_mod *fm, const struct ofp_header *request) |
064af421 | 3656 | { |
d0918789 | 3657 | struct oftable *table; |
7ee20df1 | 3658 | struct ofopgroup *group; |
8037acb4 | 3659 | struct cls_rule cr; |
064af421 | 3660 | struct rule *rule; |
5a361239 | 3661 | uint8_t table_id; |
064af421 BP |
3662 | int error; |
3663 | ||
48266274 BP |
3664 | error = check_table_id(ofproto, fm->table_id); |
3665 | if (error) { | |
3666 | return error; | |
3667 | } | |
3668 | ||
7ee20df1 BP |
3669 | /* Pick table. */ |
3670 | if (fm->table_id == 0xff) { | |
13521ff5 | 3671 | if (ofproto->ofproto_class->rule_choose_table) { |
81a76618 BP |
3672 | error = ofproto->ofproto_class->rule_choose_table(ofproto, |
3673 | &fm->match, | |
7ee20df1 BP |
3674 | &table_id); |
3675 | if (error) { | |
3676 | return error; | |
3677 | } | |
cb22974d | 3678 | ovs_assert(table_id < ofproto->n_tables); |
7ee20df1 | 3679 | } else { |
5a361239 | 3680 | table_id = 0; |
7ee20df1 BP |
3681 | } |
3682 | } else if (fm->table_id < ofproto->n_tables) { | |
5a361239 | 3683 | table_id = fm->table_id; |
7ee20df1 | 3684 | } else { |
c22c56bd | 3685 | return OFPERR_OFPBRC_BAD_TABLE_ID; |
064af421 BP |
3686 | } |
3687 | ||
5a361239 JR |
3688 | table = &ofproto->tables[table_id]; |
3689 | ||
5c67e4af BP |
3690 | if (table->flags & OFTABLE_READONLY) { |
3691 | return OFPERR_OFPBRC_EPERM; | |
3692 | } | |
3693 | ||
8037acb4 BP |
3694 | cls_rule_init(&cr, &fm->match, fm->priority); |
3695 | ||
b277c7cc BP |
3696 | /* Transform "add" into "modify" if there's an existing identical flow. */ |
3697 | ovs_rwlock_rdlock(&table->cls.rwlock); | |
8037acb4 | 3698 | rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls, &cr)); |
b277c7cc BP |
3699 | ovs_rwlock_unlock(&table->cls.rwlock); |
3700 | if (rule) { | |
8037acb4 | 3701 | cls_rule_destroy(&cr); |
b277c7cc BP |
3702 | if (!rule_is_modifiable(rule)) { |
3703 | return OFPERR_OFPBRC_EPERM; | |
3704 | } else if (rule->pending) { | |
3705 | return OFPROTO_POSTPONE; | |
3706 | } else { | |
a8e547c1 | 3707 | struct rule_collection rules; |
b277c7cc | 3708 | |
a8e547c1 BP |
3709 | rule_collection_init(&rules); |
3710 | rule_collection_add(&rules, rule); | |
b277c7cc | 3711 | fm->modify_cookie = true; |
a8e547c1 BP |
3712 | error = modify_flows__(ofproto, ofconn, fm, request, &rules); |
3713 | rule_collection_destroy(&rules); | |
3714 | ||
3715 | return error; | |
b277c7cc BP |
3716 | } |
3717 | } | |
3718 | ||
e3b56933 JR |
3719 | /* Verify actions. */ |
3720 | error = ofproto_check_ofpacts(ofproto, fm->ofpacts, fm->ofpacts_len, | |
3721 | &fm->match.flow, table_id); | |
3722 | if (error) { | |
3ef7ad56 | 3723 | cls_rule_destroy(&cr); |
e3b56933 JR |
3724 | return error; |
3725 | } | |
3726 | ||
7ee20df1 | 3727 | /* Serialize against pending deletion. */ |
8037acb4 BP |
3728 | if (is_flow_deletion_pending(ofproto, &cr, table_id)) { |
3729 | cls_rule_destroy(&cr); | |
7ee20df1 | 3730 | return OFPROTO_POSTPONE; |
afe75089 | 3731 | } |
064af421 | 3732 | |
81a76618 | 3733 | /* Check for overlap, if requested. */ |
0fb88c18 | 3734 | if (fm->flags & OFPUTIL_FF_CHECK_OVERLAP) { |
c09f755d BP |
3735 | bool overlaps; |
3736 | ||
3737 | ovs_rwlock_rdlock(&table->cls.rwlock); | |
8037acb4 | 3738 | overlaps = classifier_rule_overlaps(&table->cls, &cr); |
c09f755d BP |
3739 | ovs_rwlock_unlock(&table->cls.rwlock); |
3740 | ||
3741 | if (overlaps) { | |
8037acb4 | 3742 | cls_rule_destroy(&cr); |
c09f755d BP |
3743 | return OFPERR_OFPFMFC_OVERLAP; |
3744 | } | |
7ee20df1 | 3745 | } |
81a76618 | 3746 | |
8037acb4 BP |
3747 | /* If necessary, evict an existing rule to clear out space. */ |
3748 | error = evict_rule_from_table(ofproto, table); | |
3749 | if (error) { | |
3750 | cls_rule_destroy(&cr); | |
3751 | return error; | |
3752 | } | |
2e1ae200 | 3753 | |
8037acb4 BP |
3754 | /* Allocate new rule. */ |
3755 | rule = ofproto->ofproto_class->rule_alloc(); | |
3756 | if (!rule) { | |
3757 | cls_rule_destroy(&cr); | |
3758 | VLOG_WARN_RL(&rl, "%s: failed to create rule (%s)", | |
3759 | ofproto->name, ovs_strerror(error)); | |
3760 | return ENOMEM; | |
3761 | } | |
3762 | ||
3763 | /* Initialize base state. */ | |
49a0e0eb BP |
3764 | *CONST_CAST(struct ofproto **, &rule->ofproto) = ofproto; |
3765 | cls_rule_move(CONST_CAST(struct cls_rule *, &rule->cr), &cr); | |
a2143702 | 3766 | atomic_init(&rule->ref_count, 1); |
7ee20df1 | 3767 | rule->pending = NULL; |
623e1caf | 3768 | rule->flow_cookie = fm->new_cookie; |
1745cd08 | 3769 | rule->created = rule->modified = rule->used = time_msec(); |
a3779dbc | 3770 | |
d10976b7 BP |
3771 | ovs_mutex_init(&rule->mutex); |
3772 | ovs_mutex_lock(&rule->mutex); | |
7ee20df1 BP |
3773 | rule->idle_timeout = fm->idle_timeout; |
3774 | rule->hard_timeout = fm->hard_timeout; | |
d10976b7 | 3775 | ovs_mutex_unlock(&rule->mutex); |
a3779dbc | 3776 | |
49a0e0eb | 3777 | *CONST_CAST(uint8_t *, &rule->table_id) = table - ofproto->tables; |
3f517bcd | 3778 | rule->flags = fm->flags & OFPUTIL_FF_STATE; |
6f00e29b | 3779 | rule->actions = rule_actions_create(fm->ofpacts, fm->ofpacts_len); |
9cae45dc | 3780 | list_init(&rule->meter_list_node); |
254750ce | 3781 | rule->eviction_group = NULL; |
e503cc19 | 3782 | list_init(&rule->expirable); |
2b07c8b1 BP |
3783 | rule->monitor_flags = 0; |
3784 | rule->add_seqno = 0; | |
3785 | rule->modify_seqno = 0; | |
7ee20df1 | 3786 | |
8037acb4 | 3787 | /* Construct rule, initializing derived state. */ |
b277c7cc BP |
3788 | error = ofproto->ofproto_class->rule_construct(rule); |
3789 | if (error) { | |
8037acb4 BP |
3790 | ofproto_rule_destroy__(rule); |
3791 | return error; | |
064af421 | 3792 | } |
8037acb4 BP |
3793 | |
3794 | /* Insert rule. */ | |
3795 | oftable_insert_rule(rule); | |
3796 | ||
3797 | group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id); | |
3798 | ofoperation_create(group, rule, OFOPERATION_ADD, 0); | |
3799 | ofproto->ofproto_class->rule_insert(rule); | |
b277c7cc | 3800 | ofopgroup_submit(group); |
79eee1eb | 3801 | |
7ee20df1 | 3802 | return error; |
064af421 | 3803 | } |
79eee1eb BP |
3804 | \f |
3805 | /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */ | |
064af421 | 3806 | |
9ed18e46 BP |
3807 | /* Modifies the rules listed in 'rules', changing their actions to match those |
3808 | * in 'fm'. | |
79eee1eb | 3809 | * |
9ed18e46 BP |
3810 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, |
3811 | * if any. | |
3812 | * | |
3813 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 3814 | static enum ofperr |
7024dffe | 3815 | modify_flows__(struct ofproto *ofproto, struct ofconn *ofconn, |
e3b56933 | 3816 | struct ofputil_flow_mod *fm, const struct ofp_header *request, |
a8e547c1 | 3817 | const struct rule_collection *rules) |
79eee1eb | 3818 | { |
b277c7cc | 3819 | enum ofoperation_type type; |
7ee20df1 | 3820 | struct ofopgroup *group; |
5c67e4af | 3821 | enum ofperr error; |
a8e547c1 | 3822 | size_t i; |
79eee1eb | 3823 | |
b277c7cc | 3824 | type = fm->command == OFPFC_ADD ? OFOPERATION_REPLACE : OFOPERATION_MODIFY; |
7024dffe | 3825 | group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id); |
5c67e4af | 3826 | error = OFPERR_OFPBRC_EPERM; |
a8e547c1 BP |
3827 | for (i = 0; i < rules->n; i++) { |
3828 | struct rule *rule = rules->rules[i]; | |
08043761 BP |
3829 | struct ofoperation *op; |
3830 | bool actions_changed; | |
b277c7cc | 3831 | bool reset_counters; |
08043761 | 3832 | |
0fb88c18 | 3833 | /* FIXME: Implement OFPFUTIL_FF_RESET_COUNTS */ |
2e1ae200 | 3834 | |
5c67e4af BP |
3835 | if (rule_is_modifiable(rule)) { |
3836 | /* At least one rule is modifiable, don't report EPERM error. */ | |
3837 | error = 0; | |
3838 | } else { | |
3839 | continue; | |
3840 | } | |
3841 | ||
e3b56933 JR |
3842 | /* Verify actions. */ |
3843 | error = ofpacts_check(fm->ofpacts, fm->ofpacts_len, &fm->match.flow, | |
430dbb14 | 3844 | u16_to_ofp(ofproto->max_ports), rule->table_id); |
e3b56933 JR |
3845 | if (error) { |
3846 | return error; | |
3847 | } | |
3848 | ||
08043761 | 3849 | actions_changed = !ofpacts_equal(fm->ofpacts, fm->ofpacts_len, |
6f00e29b BP |
3850 | rule->actions->ofpacts, |
3851 | rule->actions->ofpacts_len); | |
a7d94793 | 3852 | |
b277c7cc | 3853 | op = ofoperation_create(group, rule, type, 0); |
98eaac36 | 3854 | |
23342857 | 3855 | if (fm->modify_cookie && fm->new_cookie != htonll(UINT64_MAX)) { |
98eaac36 JR |
3856 | ofproto_rule_change_cookie(ofproto, rule, fm->new_cookie); |
3857 | } | |
b277c7cc | 3858 | if (type == OFOPERATION_REPLACE) { |
d10976b7 | 3859 | ovs_mutex_lock(&rule->mutex); |
b277c7cc BP |
3860 | rule->idle_timeout = fm->idle_timeout; |
3861 | rule->hard_timeout = fm->hard_timeout; | |
d10976b7 | 3862 | ovs_mutex_unlock(&rule->mutex); |
b277c7cc | 3863 | |
3f517bcd | 3864 | rule->flags = fm->flags & OFPUTIL_FF_STATE; |
b277c7cc BP |
3865 | if (fm->idle_timeout || fm->hard_timeout) { |
3866 | if (!rule->eviction_group) { | |
3867 | eviction_group_add_rule(rule); | |
3868 | } | |
3869 | } else { | |
3870 | eviction_group_remove_rule(rule); | |
3871 | } | |
3872 | } | |
3873 | ||
3874 | reset_counters = (fm->flags & OFPUTIL_FF_RESET_COUNTS) != 0; | |
3875 | if (actions_changed || reset_counters) { | |
6f00e29b BP |
3876 | struct rule_actions *new_actions; |
3877 | ||
3878 | op->actions = rule->actions; | |
3879 | new_actions = rule_actions_create(fm->ofpacts, fm->ofpacts_len); | |
884e1dc4 | 3880 | |
c7c9a7c8 | 3881 | ovs_mutex_lock(&rule->mutex); |
6f00e29b | 3882 | rule->actions = new_actions; |
c7c9a7c8 | 3883 | ovs_mutex_unlock(&rule->mutex); |
884e1dc4 | 3884 | |
b277c7cc BP |
3885 | rule->ofproto->ofproto_class->rule_modify_actions(rule, |
3886 | reset_counters); | |
308881af | 3887 | } else { |
08043761 | 3888 | ofoperation_complete(op, 0); |
623e1caf | 3889 | } |
5ecc9d81 | 3890 | } |
7ee20df1 | 3891 | ofopgroup_submit(group); |
79eee1eb | 3892 | |
5c67e4af | 3893 | return error; |
9ed18e46 BP |
3894 | } |
3895 | ||
9387b970 SH |
3896 | static enum ofperr |
3897 | modify_flows_add(struct ofproto *ofproto, struct ofconn *ofconn, | |
e3b56933 | 3898 | struct ofputil_flow_mod *fm, const struct ofp_header *request) |
9387b970 SH |
3899 | { |
3900 | if (fm->cookie_mask != htonll(0) || fm->new_cookie == htonll(UINT64_MAX)) { | |
3901 | return 0; | |
3902 | } | |
3903 | return add_flow(ofproto, ofconn, fm, request); | |
3904 | } | |
3905 | ||
90bf1e07 BP |
3906 | /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on |
3907 | * failure. | |
9ed18e46 BP |
3908 | * |
3909 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, | |
3910 | * if any. */ | |
90bf1e07 | 3911 | static enum ofperr |
7024dffe | 3912 | modify_flows_loose(struct ofproto *ofproto, struct ofconn *ofconn, |
e3b56933 | 3913 | struct ofputil_flow_mod *fm, |
7ee20df1 | 3914 | const struct ofp_header *request) |
9ed18e46 | 3915 | { |
a9b22b7f | 3916 | struct rule_criteria criteria; |
a8e547c1 | 3917 | struct rule_collection rules; |
9ed18e46 BP |
3918 | int error; |
3919 | ||
a9b22b7f BP |
3920 | rule_criteria_init(&criteria, fm->table_id, &fm->match, 0, |
3921 | fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG11_ANY); | |
3922 | error = collect_rules_loose(ofproto, &criteria, &rules); | |
3923 | rule_criteria_destroy(&criteria); | |
3924 | ||
a8e547c1 BP |
3925 | if (!error) { |
3926 | error = (rules.n > 0 | |
3927 | ? modify_flows__(ofproto, ofconn, fm, request, &rules) | |
3928 | : modify_flows_add(ofproto, ofconn, fm, request)); | |
623e1caf | 3929 | } |
a8e547c1 BP |
3930 | |
3931 | rule_collection_destroy(&rules); | |
3932 | ||
3933 | return error; | |
79eee1eb BP |
3934 | } |
3935 | ||
3936 | /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error | |
90bf1e07 | 3937 | * code on failure. |
79eee1eb | 3938 | * |
9ed18e46 | 3939 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, |
79eee1eb | 3940 | * if any. */ |
90bf1e07 | 3941 | static enum ofperr |
7024dffe | 3942 | modify_flow_strict(struct ofproto *ofproto, struct ofconn *ofconn, |
e3b56933 | 3943 | struct ofputil_flow_mod *fm, |
7ee20df1 | 3944 | const struct ofp_header *request) |
79eee1eb | 3945 | { |
a9b22b7f | 3946 | struct rule_criteria criteria; |
a8e547c1 | 3947 | struct rule_collection rules; |
6c1491fb BP |
3948 | int error; |
3949 | ||
a9b22b7f BP |
3950 | rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority, |
3951 | fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG11_ANY); | |
3952 | error = collect_rules_strict(ofproto, &criteria, &rules); | |
3953 | rule_criteria_destroy(&criteria); | |
3954 | ||
a8e547c1 BP |
3955 | if (!error) { |
3956 | if (rules.n == 0) { | |
3957 | error = modify_flows_add(ofproto, ofconn, fm, request); | |
3958 | } else if (rules.n == 1) { | |
3959 | error = modify_flows__(ofproto, ofconn, fm, request, &rules); | |
3960 | } | |
623e1caf | 3961 | } |
a8e547c1 BP |
3962 | |
3963 | rule_collection_destroy(&rules); | |
3964 | ||
3965 | return error; | |
79eee1eb | 3966 | } |
9ed18e46 BP |
3967 | \f |
3968 | /* OFPFC_DELETE implementation. */ | |
79eee1eb | 3969 | |
254750ce | 3970 | static void |
ca311b2f JR |
3971 | delete_flow__(struct rule *rule, struct ofopgroup *group, |
3972 | enum ofp_flow_removed_reason reason) | |
254750ce BP |
3973 | { |
3974 | struct ofproto *ofproto = rule->ofproto; | |
3975 | ||
ca311b2f | 3976 | ofproto_rule_send_removed(rule, reason); |
254750ce | 3977 | |
ca311b2f | 3978 | ofoperation_create(group, rule, OFOPERATION_DELETE, reason); |
254750ce | 3979 | oftable_remove_rule(rule); |
8037acb4 | 3980 | ofproto->ofproto_class->rule_delete(rule); |
254750ce BP |
3981 | } |
3982 | ||
9ed18e46 BP |
3983 | /* Deletes the rules listed in 'rules'. |
3984 | * | |
3985 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 3986 | static enum ofperr |
7024dffe | 3987 | delete_flows__(struct ofproto *ofproto, struct ofconn *ofconn, |
a8e547c1 BP |
3988 | const struct ofp_header *request, |
3989 | const struct rule_collection *rules, | |
ca311b2f | 3990 | enum ofp_flow_removed_reason reason) |
064af421 | 3991 | { |
7ee20df1 | 3992 | struct ofopgroup *group; |
a8e547c1 | 3993 | size_t i; |
79eee1eb | 3994 | |
7024dffe | 3995 | group = ofopgroup_create(ofproto, ofconn, request, UINT32_MAX); |
a8e547c1 BP |
3996 | for (i = 0; i < rules->n; i++) { |
3997 | struct rule *rule = rules->rules[i]; | |
c7c9a7c8 | 3998 | ovs_mutex_lock(&rule->mutex); |
ca311b2f | 3999 | delete_flow__(rule, group, reason); |
79eee1eb | 4000 | } |
7ee20df1 | 4001 | ofopgroup_submit(group); |
79eee1eb | 4002 | |
9ed18e46 | 4003 | return 0; |
79eee1eb | 4004 | } |
79eee1eb BP |
4005 | |
4006 | /* Implements OFPFC_DELETE. */ | |
90bf1e07 | 4007 | static enum ofperr |
7024dffe BP |
4008 | delete_flows_loose(struct ofproto *ofproto, struct ofconn *ofconn, |
4009 | const struct ofputil_flow_mod *fm, | |
7ee20df1 | 4010 | const struct ofp_header *request) |
79eee1eb | 4011 | { |
a9b22b7f | 4012 | struct rule_criteria criteria; |
a8e547c1 | 4013 | struct rule_collection rules; |
90bf1e07 | 4014 | enum ofperr error; |
064af421 | 4015 | |
a9b22b7f BP |
4016 | rule_criteria_init(&criteria, fm->table_id, &fm->match, 0, |
4017 | fm->cookie, fm->cookie_mask, | |
4018 | fm->out_port, fm->out_group); | |
4019 | error = collect_rules_loose(ofproto, &criteria, &rules); | |
4020 | rule_criteria_destroy(&criteria); | |
4021 | ||
a8e547c1 BP |
4022 | if (!error && rules.n > 0) { |
4023 | error = delete_flows__(ofproto, ofconn, request, &rules, OFPRR_DELETE); | |
4024 | } | |
4025 | rule_collection_destroy(&rules); | |
4026 | ||
4027 | return error; | |
064af421 BP |
4028 | } |
4029 | ||
79eee1eb | 4030 | /* Implements OFPFC_DELETE_STRICT. */ |
90bf1e07 | 4031 | static enum ofperr |
7024dffe | 4032 | delete_flow_strict(struct ofproto *ofproto, struct ofconn *ofconn, |
1b9d6420 | 4033 | const struct ofputil_flow_mod *fm, |
7ee20df1 | 4034 | const struct ofp_header *request) |
79eee1eb | 4035 | { |
a9b22b7f | 4036 | struct rule_criteria criteria; |
a8e547c1 | 4037 | struct rule_collection rules; |
90bf1e07 | 4038 | enum ofperr error; |
79eee1eb | 4039 | |
a9b22b7f BP |
4040 | rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority, |
4041 | fm->cookie, fm->cookie_mask, | |
4042 | fm->out_port, fm->out_group); | |
4043 | error = collect_rules_strict(ofproto, &criteria, &rules); | |
4044 | rule_criteria_destroy(&criteria); | |
4045 | ||
a8e547c1 BP |
4046 | if (!error && rules.n > 0) { |
4047 | error = delete_flows__(ofproto, ofconn, request, &rules, OFPRR_DELETE); | |
4048 | } | |
4049 | rule_collection_destroy(&rules); | |
4050 | ||
4051 | return error; | |
abe529af BP |
4052 | } |
4053 | ||
4054 | static void | |
4055 | ofproto_rule_send_removed(struct rule *rule, uint8_t reason) | |
4056 | { | |
4057 | struct ofputil_flow_removed fr; | |
4058 | ||
3f517bcd DB |
4059 | if (ofproto_rule_is_hidden(rule) || |
4060 | !(rule->flags & OFPUTIL_FF_SEND_FLOW_REM)) { | |
abe529af BP |
4061 | return; |
4062 | } | |
4063 | ||
5cb7a798 | 4064 | minimatch_expand(&rule->cr.match, &fr.match); |
81a76618 | 4065 | fr.priority = rule->cr.priority; |
abe529af BP |
4066 | fr.cookie = rule->flow_cookie; |
4067 | fr.reason = reason; | |
95216219 | 4068 | fr.table_id = rule->table_id; |
65e0be10 BP |
4069 | calc_duration(rule->created, time_msec(), |
4070 | &fr.duration_sec, &fr.duration_nsec); | |
d10976b7 | 4071 | ovs_mutex_lock(&rule->mutex); |
abe529af | 4072 | fr.idle_timeout = rule->idle_timeout; |
fa2bad0f | 4073 | fr.hard_timeout = rule->hard_timeout; |
d10976b7 | 4074 | ovs_mutex_unlock(&rule->mutex); |
abe529af BP |
4075 | rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count, |
4076 | &fr.byte_count); | |
4077 | ||
4078 | connmgr_send_flow_removed(rule->ofproto->connmgr, &fr); | |
4079 | } | |
4080 | ||
4081 | /* Sends an OpenFlow "flow removed" message with the given 'reason' (either | |
4082 | * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its | |
4083 | * ofproto. | |
4084 | * | |
e2a3d183 BP |
4085 | * 'rule' must not have a pending operation (that is, 'rule->pending' must be |
4086 | * NULL). | |
4087 | * | |
abe529af BP |
4088 | * ofproto implementation ->run() functions should use this function to expire |
4089 | * OpenFlow flows. */ | |
4090 | void | |
4091 | ofproto_rule_expire(struct rule *rule, uint8_t reason) | |
4092 | { | |
7ee20df1 | 4093 | struct ofproto *ofproto = rule->ofproto; |
8037acb4 | 4094 | struct classifier *cls = &ofproto->tables[rule->table_id].cls; |
7ee20df1 | 4095 | |
7395c052 NZ |
4096 | ovs_assert(reason == OFPRR_HARD_TIMEOUT || reason == OFPRR_IDLE_TIMEOUT |
4097 | || reason == OFPRR_DELETE || reason == OFPRR_GROUP_DELETE); | |
abe529af | 4098 | ofproto_rule_send_removed(rule, reason); |
7ee20df1 | 4099 | |
8037acb4 | 4100 | ovs_rwlock_wrlock(&cls->rwlock); |
b74cb5d8 | 4101 | ofproto_rule_delete(ofproto, cls, rule); |
8037acb4 | 4102 | ovs_rwlock_unlock(&cls->rwlock); |
79eee1eb | 4103 | } |
994c9973 BP |
4104 | |
4105 | /* Reduces '*timeout' to no more than 'max'. A value of zero in either case | |
4106 | * means "infinite". */ | |
4107 | static void | |
4108 | reduce_timeout(uint16_t max, uint16_t *timeout) | |
4109 | { | |
4110 | if (max && (!*timeout || *timeout > max)) { | |
4111 | *timeout = max; | |
4112 | } | |
4113 | } | |
4114 | ||
4115 | /* If 'idle_timeout' is nonzero, and 'rule' has no idle timeout or an idle | |
4116 | * timeout greater than 'idle_timeout', lowers 'rule''s idle timeout to | |
4117 | * 'idle_timeout' seconds. Similarly for 'hard_timeout'. | |
4118 | * | |
4119 | * Suitable for implementing OFPACT_FIN_TIMEOUT. */ | |
4120 | void | |
4121 | ofproto_rule_reduce_timeouts(struct rule *rule, | |
4122 | uint16_t idle_timeout, uint16_t hard_timeout) | |
d10976b7 | 4123 | OVS_EXCLUDED(ofproto_mutex, rule->mutex) |
994c9973 BP |
4124 | { |
4125 | if (!idle_timeout && !hard_timeout) { | |
4126 | return; | |
4127 | } | |
4128 | ||
abe7b10f | 4129 | ovs_mutex_lock(&ofproto_mutex); |
994c9973 BP |
4130 | if (list_is_empty(&rule->expirable)) { |
4131 | list_insert(&rule->ofproto->expirable, &rule->expirable); | |
4132 | } | |
abe7b10f | 4133 | ovs_mutex_unlock(&ofproto_mutex); |
994c9973 | 4134 | |
d10976b7 | 4135 | ovs_mutex_lock(&rule->mutex); |
994c9973 BP |
4136 | reduce_timeout(idle_timeout, &rule->idle_timeout); |
4137 | reduce_timeout(hard_timeout, &rule->hard_timeout); | |
d10976b7 | 4138 | ovs_mutex_unlock(&rule->mutex); |
994c9973 | 4139 | } |
79eee1eb | 4140 | \f |
90bf1e07 | 4141 | static enum ofperr |
2e4f5fcf | 4142 | handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 4143 | { |
a5b8d268 | 4144 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
a9a2da38 | 4145 | struct ofputil_flow_mod fm; |
f25d0cf3 BP |
4146 | uint64_t ofpacts_stub[1024 / 8]; |
4147 | struct ofpbuf ofpacts; | |
90bf1e07 | 4148 | enum ofperr error; |
a5b8d268 | 4149 | long long int now; |
064af421 | 4150 | |
76589937 | 4151 | error = reject_slave_controller(ofconn); |
9deba63b | 4152 | if (error) { |
f25d0cf3 | 4153 | goto exit; |
9deba63b | 4154 | } |
3052b0c5 | 4155 | |
f25d0cf3 BP |
4156 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
4157 | error = ofputil_decode_flow_mod(&fm, oh, ofconn_get_protocol(ofconn), | |
4158 | &ofpacts); | |
548de4dd | 4159 | if (!error) { |
f1822532 | 4160 | error = handle_flow_mod__(ofproto, ofconn, &fm, oh); |
49bdc010 | 4161 | } |
a5b8d268 | 4162 | if (error) { |
f25d0cf3 | 4163 | goto exit_free_ofpacts; |
a5b8d268 | 4164 | } |
2e310801 | 4165 | |
a5b8d268 BP |
4166 | /* Record the operation for logging a summary report. */ |
4167 | switch (fm.command) { | |
4168 | case OFPFC_ADD: | |
4169 | ofproto->n_add++; | |
4170 | break; | |
4171 | ||
4172 | case OFPFC_MODIFY: | |
4173 | case OFPFC_MODIFY_STRICT: | |
4174 | ofproto->n_modify++; | |
4175 | break; | |
4176 | ||
4177 | case OFPFC_DELETE: | |
4178 | case OFPFC_DELETE_STRICT: | |
4179 | ofproto->n_delete++; | |
4180 | break; | |
4181 | } | |
4182 | ||
4183 | now = time_msec(); | |
4184 | if (ofproto->next_op_report == LLONG_MAX) { | |
4185 | ofproto->first_op = now; | |
4186 | ofproto->next_op_report = MAX(now + 10 * 1000, | |
4187 | ofproto->op_backoff); | |
4188 | ofproto->op_backoff = ofproto->next_op_report + 60 * 1000; | |
4189 | } | |
4190 | ofproto->last_op = now; | |
4191 | ||
f25d0cf3 BP |
4192 | exit_free_ofpacts: |
4193 | ofpbuf_uninit(&ofpacts); | |
4194 | exit: | |
4195 | return error; | |
75a75043 BP |
4196 | } |
4197 | ||
90bf1e07 | 4198 | static enum ofperr |
75a75043 | 4199 | handle_flow_mod__(struct ofproto *ofproto, struct ofconn *ofconn, |
e3b56933 | 4200 | struct ofputil_flow_mod *fm, const struct ofp_header *oh) |
75a75043 | 4201 | { |
35412852 | 4202 | enum ofperr error; |
75a75043 | 4203 | |
35412852 BP |
4204 | if (ofproto->n_pending < 50) { |
4205 | switch (fm->command) { | |
4206 | case OFPFC_ADD: | |
4207 | error = add_flow(ofproto, ofconn, fm, oh); | |
4208 | break; | |
3052b0c5 | 4209 | |
35412852 BP |
4210 | case OFPFC_MODIFY: |
4211 | error = modify_flows_loose(ofproto, ofconn, fm, oh); | |
4212 | break; | |
3052b0c5 | 4213 | |
35412852 BP |
4214 | case OFPFC_MODIFY_STRICT: |
4215 | error = modify_flow_strict(ofproto, ofconn, fm, oh); | |
4216 | break; | |
3052b0c5 | 4217 | |
35412852 BP |
4218 | case OFPFC_DELETE: |
4219 | error = delete_flows_loose(ofproto, ofconn, fm, oh); | |
4220 | break; | |
3052b0c5 | 4221 | |
35412852 BP |
4222 | case OFPFC_DELETE_STRICT: |
4223 | error = delete_flow_strict(ofproto, ofconn, fm, oh); | |
4224 | break; | |
3052b0c5 | 4225 | |
35412852 BP |
4226 | default: |
4227 | if (fm->command > 0xff) { | |
4228 | VLOG_WARN_RL(&rl, "%s: flow_mod has explicit table_id but " | |
4229 | "flow_mod_table_id extension is not enabled", | |
4230 | ofproto->name); | |
4231 | } | |
4232 | error = OFPERR_OFPFMFC_BAD_COMMAND; | |
4233 | break; | |
6c1491fb | 4234 | } |
35412852 BP |
4235 | } else { |
4236 | ovs_assert(!list_is_empty(&ofproto->pending)); | |
4237 | error = OFPROTO_POSTPONE; | |
3052b0c5 | 4238 | } |
35412852 BP |
4239 | |
4240 | run_rule_executes(ofproto); | |
4241 | return error; | |
3052b0c5 BP |
4242 | } |
4243 | ||
90bf1e07 | 4244 | static enum ofperr |
d1e2cf21 | 4245 | handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh) |
9deba63b | 4246 | { |
f4f1ea7e BP |
4247 | struct ofputil_role_request request; |
4248 | struct ofputil_role_request reply; | |
9deba63b | 4249 | struct ofpbuf *buf; |
6ea4776b JR |
4250 | enum ofperr error; |
4251 | ||
f4f1ea7e | 4252 | error = ofputil_decode_role_message(oh, &request); |
6ea4776b JR |
4253 | if (error) { |
4254 | return error; | |
4255 | } | |
9deba63b | 4256 | |
f4f1ea7e BP |
4257 | if (request.role != OFPCR12_ROLE_NOCHANGE) { |
4258 | if (ofconn_get_role(ofconn) != request.role | |
4259 | && ofconn_has_pending_opgroups(ofconn)) { | |
4260 | return OFPROTO_POSTPONE; | |
4261 | } | |
7ee20df1 | 4262 | |
f4f1ea7e BP |
4263 | if (request.have_generation_id |
4264 | && !ofconn_set_master_election_id(ofconn, request.generation_id)) { | |
4265 | return OFPERR_OFPRRFC_STALE; | |
6ea4776b | 4266 | } |
6ea4776b | 4267 | |
f4f1ea7e BP |
4268 | ofconn_set_role(ofconn, request.role); |
4269 | } | |
9deba63b | 4270 | |
f4f1ea7e | 4271 | reply.role = ofconn_get_role(ofconn); |
147cc9d3 BP |
4272 | reply.have_generation_id = ofconn_get_master_election_id( |
4273 | ofconn, &reply.generation_id); | |
f4f1ea7e | 4274 | buf = ofputil_encode_role_reply(oh, &reply); |
b0421aa2 | 4275 | ofconn_send_reply(ofconn, buf); |
9deba63b BP |
4276 | |
4277 | return 0; | |
4278 | } | |
4279 | ||
90bf1e07 | 4280 | static enum ofperr |
6c1491fb BP |
4281 | handle_nxt_flow_mod_table_id(struct ofconn *ofconn, |
4282 | const struct ofp_header *oh) | |
4283 | { | |
982697a4 | 4284 | const struct nx_flow_mod_table_id *msg = ofpmsg_body(oh); |
27527aa0 BP |
4285 | enum ofputil_protocol cur, next; |
4286 | ||
4287 | cur = ofconn_get_protocol(ofconn); | |
4288 | next = ofputil_protocol_set_tid(cur, msg->set != 0); | |
4289 | ofconn_set_protocol(ofconn, next); | |
6c1491fb | 4290 | |
6c1491fb BP |
4291 | return 0; |
4292 | } | |
4293 | ||
90bf1e07 | 4294 | static enum ofperr |
d1e2cf21 | 4295 | handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh) |
09246b99 | 4296 | { |
982697a4 | 4297 | const struct nx_set_flow_format *msg = ofpmsg_body(oh); |
27527aa0 BP |
4298 | enum ofputil_protocol cur, next; |
4299 | enum ofputil_protocol next_base; | |
09246b99 | 4300 | |
27527aa0 BP |
4301 | next_base = ofputil_nx_flow_format_to_protocol(ntohl(msg->format)); |
4302 | if (!next_base) { | |
90bf1e07 | 4303 | return OFPERR_OFPBRC_EPERM; |
09246b99 | 4304 | } |
7ee20df1 | 4305 | |
27527aa0 BP |
4306 | cur = ofconn_get_protocol(ofconn); |
4307 | next = ofputil_protocol_set_base(cur, next_base); | |
4308 | if (cur != next && ofconn_has_pending_opgroups(ofconn)) { | |
4309 | /* Avoid sending async messages in surprising protocol. */ | |
7ee20df1 BP |
4310 | return OFPROTO_POSTPONE; |
4311 | } | |
4312 | ||
27527aa0 | 4313 | ofconn_set_protocol(ofconn, next); |
7ee20df1 | 4314 | return 0; |
09246b99 BP |
4315 | } |
4316 | ||
90bf1e07 | 4317 | static enum ofperr |
54834960 EJ |
4318 | handle_nxt_set_packet_in_format(struct ofconn *ofconn, |
4319 | const struct ofp_header *oh) | |
4320 | { | |
982697a4 | 4321 | const struct nx_set_packet_in_format *msg = ofpmsg_body(oh); |
54834960 EJ |
4322 | uint32_t format; |
4323 | ||
54834960 | 4324 | format = ntohl(msg->format); |
a15f0eeb | 4325 | if (format != NXPIF_OPENFLOW10 && format != NXPIF_NXM) { |
90bf1e07 | 4326 | return OFPERR_OFPBRC_EPERM; |
54834960 EJ |
4327 | } |
4328 | ||
4329 | if (format != ofconn_get_packet_in_format(ofconn) | |
4330 | && ofconn_has_pending_opgroups(ofconn)) { | |
4331 | /* Avoid sending async message in surprsing packet in format. */ | |
4332 | return OFPROTO_POSTPONE; | |
4333 | } | |
4334 | ||
4335 | ofconn_set_packet_in_format(ofconn, format); | |
4336 | return 0; | |
4337 | } | |
4338 | ||
80d5aefd BP |
4339 | static enum ofperr |
4340 | handle_nxt_set_async_config(struct ofconn *ofconn, const struct ofp_header *oh) | |
4341 | { | |
982697a4 | 4342 | const struct nx_async_config *msg = ofpmsg_body(oh); |
80d5aefd BP |
4343 | uint32_t master[OAM_N_TYPES]; |
4344 | uint32_t slave[OAM_N_TYPES]; | |
4345 | ||
4346 | master[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[0]); | |
4347 | master[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[0]); | |
4348 | master[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[0]); | |
4349 | ||
4350 | slave[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[1]); | |
4351 | slave[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[1]); | |
4352 | slave[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[1]); | |
4353 | ||
4354 | ofconn_set_async_config(ofconn, master, slave); | |
4550b647 MM |
4355 | if (ofconn_get_type(ofconn) == OFCONN_SERVICE && |
4356 | !ofconn_get_miss_send_len(ofconn)) { | |
4357 | ofconn_set_miss_send_len(ofconn, OFP_DEFAULT_MISS_SEND_LEN); | |
4358 | } | |
80d5aefd BP |
4359 | |
4360 | return 0; | |
4361 | } | |
4362 | ||
c423b3b3 AC |
4363 | static enum ofperr |
4364 | handle_nxt_get_async_request(struct ofconn *ofconn, const struct ofp_header *oh) | |
4365 | { | |
4366 | struct ofpbuf *buf; | |
4367 | uint32_t master[OAM_N_TYPES]; | |
4368 | uint32_t slave[OAM_N_TYPES]; | |
4369 | struct nx_async_config *msg; | |
4370 | ||
4371 | ofconn_get_async_config(ofconn, master, slave); | |
4372 | buf = ofpraw_alloc_reply(OFPRAW_OFPT13_GET_ASYNC_REPLY, oh, 0); | |
4373 | msg = ofpbuf_put_zeros(buf, sizeof *msg); | |
4374 | ||
4375 | msg->packet_in_mask[0] = htonl(master[OAM_PACKET_IN]); | |
4376 | msg->port_status_mask[0] = htonl(master[OAM_PORT_STATUS]); | |
4377 | msg->flow_removed_mask[0] = htonl(master[OAM_FLOW_REMOVED]); | |
4378 | ||
4379 | msg->packet_in_mask[1] = htonl(slave[OAM_PACKET_IN]); | |
4380 | msg->port_status_mask[1] = htonl(slave[OAM_PORT_STATUS]); | |
4381 | msg->flow_removed_mask[1] = htonl(slave[OAM_FLOW_REMOVED]); | |
4382 | ||
4383 | ofconn_send_reply(ofconn, buf); | |
4384 | ||
4385 | return 0; | |
4386 | } | |
4387 | ||
a7349929 BP |
4388 | static enum ofperr |
4389 | handle_nxt_set_controller_id(struct ofconn *ofconn, | |
4390 | const struct ofp_header *oh) | |
4391 | { | |
982697a4 | 4392 | const struct nx_controller_id *nci = ofpmsg_body(oh); |
a7349929 | 4393 | |
a7349929 BP |
4394 | if (!is_all_zeros(nci->zero, sizeof nci->zero)) { |
4395 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
4396 | } | |
4397 | ||
4398 | ofconn_set_controller_id(ofconn, ntohs(nci->controller_id)); | |
4399 | return 0; | |
4400 | } | |
4401 | ||
90bf1e07 | 4402 | static enum ofperr |
d1e2cf21 | 4403 | handle_barrier_request(struct ofconn *ofconn, const struct ofp_header *oh) |
246e61ea | 4404 | { |
246e61ea JP |
4405 | struct ofpbuf *buf; |
4406 | ||
7ee20df1 BP |
4407 | if (ofconn_has_pending_opgroups(ofconn)) { |
4408 | return OFPROTO_POSTPONE; | |
4409 | } | |
4410 | ||
982697a4 BP |
4411 | buf = ofpraw_alloc_reply((oh->version == OFP10_VERSION |
4412 | ? OFPRAW_OFPT10_BARRIER_REPLY | |
4413 | : OFPRAW_OFPT11_BARRIER_REPLY), oh, 0); | |
b0421aa2 | 4414 | ofconn_send_reply(ofconn, buf); |
246e61ea JP |
4415 | return 0; |
4416 | } | |
4417 | ||
2b07c8b1 BP |
4418 | static void |
4419 | ofproto_compose_flow_refresh_update(const struct rule *rule, | |
4420 | enum nx_flow_monitor_flags flags, | |
4421 | struct list *msgs) | |
4422 | { | |
4423 | struct ofoperation *op = rule->pending; | |
6f00e29b | 4424 | const struct rule_actions *actions; |
2b07c8b1 | 4425 | struct ofputil_flow_update fu; |
5cb7a798 | 4426 | struct match match; |
2b07c8b1 | 4427 | |
b277c7cc | 4428 | if (op && op->type == OFOPERATION_ADD) { |
2b07c8b1 BP |
4429 | /* We'll report the final flow when the operation completes. Reporting |
4430 | * it now would cause a duplicate report later. */ | |
4431 | return; | |
4432 | } | |
4433 | ||
4434 | fu.event = (flags & (NXFMF_INITIAL | NXFMF_ADD) | |
4435 | ? NXFME_ADDED : NXFME_MODIFIED); | |
4436 | fu.reason = 0; | |
d10976b7 | 4437 | ovs_mutex_lock(&rule->mutex); |
2b07c8b1 BP |
4438 | fu.idle_timeout = rule->idle_timeout; |
4439 | fu.hard_timeout = rule->hard_timeout; | |
d10976b7 | 4440 | ovs_mutex_unlock(&rule->mutex); |
2b07c8b1 BP |
4441 | fu.table_id = rule->table_id; |
4442 | fu.cookie = rule->flow_cookie; | |
5cb7a798 BP |
4443 | minimatch_expand(&rule->cr.match, &match); |
4444 | fu.match = &match; | |
6b140a4e | 4445 | fu.priority = rule->cr.priority; |
6f00e29b | 4446 | |
2b07c8b1 | 4447 | if (!(flags & NXFMF_ACTIONS)) { |
6f00e29b | 4448 | actions = NULL; |
2b07c8b1 | 4449 | } else if (!op) { |
6f00e29b | 4450 | actions = rule->actions; |
2b07c8b1 BP |
4451 | } else { |
4452 | /* An operation is in progress. Use the previous version of the flow's | |
4453 | * actions, so that when the operation commits we report the change. */ | |
4454 | switch (op->type) { | |
4455 | case OFOPERATION_ADD: | |
b277c7cc | 4456 | NOT_REACHED(); |
2b07c8b1 BP |
4457 | |
4458 | case OFOPERATION_MODIFY: | |
b277c7cc | 4459 | case OFOPERATION_REPLACE: |
6f00e29b | 4460 | actions = op->actions ? op->actions : rule->actions; |
2b07c8b1 BP |
4461 | break; |
4462 | ||
4463 | case OFOPERATION_DELETE: | |
6f00e29b | 4464 | actions = rule->actions; |
2b07c8b1 BP |
4465 | break; |
4466 | ||
4467 | default: | |
4468 | NOT_REACHED(); | |
4469 | } | |
4470 | } | |
6f00e29b BP |
4471 | fu.ofpacts = actions ? actions->ofpacts : NULL; |
4472 | fu.ofpacts_len = actions ? actions->ofpacts_len : 0; | |
2b07c8b1 BP |
4473 | |
4474 | if (list_is_empty(msgs)) { | |
4475 | ofputil_start_flow_update(msgs); | |
4476 | } | |
4477 | ofputil_append_flow_update(&fu, msgs); | |
4478 | } | |
4479 | ||
4480 | void | |
a8e547c1 BP |
4481 | ofmonitor_compose_refresh_updates(struct rule_collection *rules, |
4482 | struct list *msgs) | |
2b07c8b1 | 4483 | { |
a8e547c1 | 4484 | size_t i; |
2b07c8b1 | 4485 | |
a8e547c1 BP |
4486 | for (i = 0; i < rules->n; i++) { |
4487 | struct rule *rule = rules->rules[i]; | |
2b07c8b1 BP |
4488 | enum nx_flow_monitor_flags flags = rule->monitor_flags; |
4489 | rule->monitor_flags = 0; | |
4490 | ||
4491 | ofproto_compose_flow_refresh_update(rule, flags, msgs); | |
4492 | } | |
4493 | } | |
4494 | ||
4495 | static void | |
4496 | ofproto_collect_ofmonitor_refresh_rule(const struct ofmonitor *m, | |
4497 | struct rule *rule, uint64_t seqno, | |
a8e547c1 | 4498 | struct rule_collection *rules) |
2b07c8b1 BP |
4499 | { |
4500 | enum nx_flow_monitor_flags update; | |
4501 | ||
4502 | if (ofproto_rule_is_hidden(rule)) { | |
4503 | return; | |
4504 | } | |
4505 | ||
4506 | if (!(rule->pending | |
4507 | ? ofoperation_has_out_port(rule->pending, m->out_port) | |
4508 | : ofproto_rule_has_out_port(rule, m->out_port))) { | |
4509 | return; | |
4510 | } | |
4511 | ||
4512 | if (seqno) { | |
4513 | if (rule->add_seqno > seqno) { | |
4514 | update = NXFMF_ADD | NXFMF_MODIFY; | |
4515 | } else if (rule->modify_seqno > seqno) { | |
4516 | update = NXFMF_MODIFY; | |
4517 | } else { | |
4518 | return; | |
4519 | } | |
4520 | ||
4521 | if (!(m->flags & update)) { | |
4522 | return; | |
4523 | } | |
4524 | } else { | |
4525 | update = NXFMF_INITIAL; | |
4526 | } | |
4527 | ||
4528 | if (!rule->monitor_flags) { | |
a8e547c1 | 4529 | rule_collection_add(rules, rule); |
2b07c8b1 BP |
4530 | } |
4531 | rule->monitor_flags |= update | (m->flags & NXFMF_ACTIONS); | |
4532 | } | |
4533 | ||
4534 | static void | |
4535 | ofproto_collect_ofmonitor_refresh_rules(const struct ofmonitor *m, | |
4536 | uint64_t seqno, | |
a8e547c1 | 4537 | struct rule_collection *rules) |
2b07c8b1 BP |
4538 | { |
4539 | const struct ofproto *ofproto = ofconn_get_ofproto(m->ofconn); | |
4540 | const struct ofoperation *op; | |
4541 | const struct oftable *table; | |
81a76618 | 4542 | struct cls_rule target; |
2b07c8b1 | 4543 | |
5cb7a798 | 4544 | cls_rule_init_from_minimatch(&target, &m->match, 0); |
2b07c8b1 BP |
4545 | FOR_EACH_MATCHING_TABLE (table, m->table_id, ofproto) { |
4546 | struct cls_cursor cursor; | |
4547 | struct rule *rule; | |
4548 | ||
0b4f2078 | 4549 | ovs_rwlock_rdlock(&table->cls.rwlock); |
81a76618 | 4550 | cls_cursor_init(&cursor, &table->cls, &target); |
2b07c8b1 | 4551 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
cb22974d | 4552 | ovs_assert(!rule->pending); /* XXX */ |
2b07c8b1 BP |
4553 | ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules); |
4554 | } | |
0b4f2078 | 4555 | ovs_rwlock_unlock(&table->cls.rwlock); |
2b07c8b1 BP |
4556 | } |
4557 | ||
4558 | HMAP_FOR_EACH (op, hmap_node, &ofproto->deletions) { | |
4559 | struct rule *rule = op->rule; | |
4560 | ||
4561 | if (((m->table_id == 0xff | |
4562 | ? !(ofproto->tables[rule->table_id].flags & OFTABLE_HIDDEN) | |
4563 | : m->table_id == rule->table_id)) | |
81a76618 | 4564 | && cls_rule_is_loose_match(&rule->cr, &target.match)) { |
2b07c8b1 BP |
4565 | ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules); |
4566 | } | |
4567 | } | |
48d28ac1 | 4568 | cls_rule_destroy(&target); |
2b07c8b1 BP |
4569 | } |
4570 | ||
4571 | static void | |
4572 | ofproto_collect_ofmonitor_initial_rules(struct ofmonitor *m, | |
a8e547c1 | 4573 | struct rule_collection *rules) |
2b07c8b1 BP |
4574 | { |
4575 | if (m->flags & NXFMF_INITIAL) { | |
4576 | ofproto_collect_ofmonitor_refresh_rules(m, 0, rules); | |
4577 | } | |
4578 | } | |
4579 | ||
4580 | void | |
4581 | ofmonitor_collect_resume_rules(struct ofmonitor *m, | |
a8e547c1 | 4582 | uint64_t seqno, struct rule_collection *rules) |
2b07c8b1 BP |
4583 | { |
4584 | ofproto_collect_ofmonitor_refresh_rules(m, seqno, rules); | |
4585 | } | |
4586 | ||
4587 | static enum ofperr | |
982697a4 | 4588 | handle_flow_monitor_request(struct ofconn *ofconn, const struct ofp_header *oh) |
2b07c8b1 BP |
4589 | { |
4590 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
4591 | struct ofmonitor **monitors; | |
4592 | size_t n_monitors, allocated_monitors; | |
a8e547c1 | 4593 | struct rule_collection rules; |
2b07c8b1 BP |
4594 | struct list replies; |
4595 | enum ofperr error; | |
2b07c8b1 BP |
4596 | struct ofpbuf b; |
4597 | size_t i; | |
4598 | ||
4599 | error = 0; | |
982697a4 | 4600 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
2b07c8b1 BP |
4601 | monitors = NULL; |
4602 | n_monitors = allocated_monitors = 0; | |
4603 | for (;;) { | |
4604 | struct ofputil_flow_monitor_request request; | |
4605 | struct ofmonitor *m; | |
4606 | int retval; | |
4607 | ||
4608 | retval = ofputil_decode_flow_monitor_request(&request, &b); | |
4609 | if (retval == EOF) { | |
4610 | break; | |
4611 | } else if (retval) { | |
4612 | error = retval; | |
4613 | goto error; | |
4614 | } | |
4615 | ||
4616 | if (request.table_id != 0xff | |
4617 | && request.table_id >= ofproto->n_tables) { | |
4618 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
4619 | goto error; | |
4620 | } | |
4621 | ||
4622 | error = ofmonitor_create(&request, ofconn, &m); | |
4623 | if (error) { | |
4624 | goto error; | |
4625 | } | |
4626 | ||
4627 | if (n_monitors >= allocated_monitors) { | |
4628 | monitors = x2nrealloc(monitors, &allocated_monitors, | |
4629 | sizeof *monitors); | |
4630 | } | |
4631 | monitors[n_monitors++] = m; | |
4632 | } | |
4633 | ||
a8e547c1 | 4634 | rule_collection_init(&rules); |
2b07c8b1 BP |
4635 | for (i = 0; i < n_monitors; i++) { |
4636 | ofproto_collect_ofmonitor_initial_rules(monitors[i], &rules); | |
4637 | } | |
4638 | ||
982697a4 | 4639 | ofpmp_init(&replies, oh); |
2b07c8b1 | 4640 | ofmonitor_compose_refresh_updates(&rules, &replies); |
a8e547c1 BP |
4641 | rule_collection_destroy(&rules); |
4642 | ||
2b07c8b1 BP |
4643 | ofconn_send_replies(ofconn, &replies); |
4644 | ||
4645 | free(monitors); | |
4646 | ||
4647 | return 0; | |
4648 | ||
4649 | error: | |
4650 | for (i = 0; i < n_monitors; i++) { | |
4651 | ofmonitor_destroy(monitors[i]); | |
4652 | } | |
4653 | free(monitors); | |
4654 | return error; | |
4655 | } | |
4656 | ||
4657 | static enum ofperr | |
4658 | handle_flow_monitor_cancel(struct ofconn *ofconn, const struct ofp_header *oh) | |
4659 | { | |
4660 | struct ofmonitor *m; | |
4661 | uint32_t id; | |
4662 | ||
4663 | id = ofputil_decode_flow_monitor_cancel(oh); | |
4664 | m = ofmonitor_lookup(ofconn, id); | |
4665 | if (!m) { | |
4666 | return OFPERR_NXBRC_FM_BAD_ID; | |
4667 | } | |
4668 | ||
4669 | ofmonitor_destroy(m); | |
4670 | return 0; | |
4671 | } | |
4672 | ||
9cae45dc JR |
4673 | /* Meters implementation. |
4674 | * | |
4675 | * Meter table entry, indexed by the OpenFlow meter_id. | |
4676 | * These are always dynamically allocated to allocate enough space for | |
4677 | * the bands. | |
4678 | * 'created' is used to compute the duration for meter stats. | |
4679 | * 'list rules' is needed so that we can delete the dependent rules when the | |
4680 | * meter table entry is deleted. | |
4681 | * 'provider_meter_id' is for the provider's private use. | |
4682 | */ | |
4683 | struct meter { | |
4684 | long long int created; /* Time created. */ | |
4685 | struct list rules; /* List of "struct rule_dpif"s. */ | |
4686 | ofproto_meter_id provider_meter_id; | |
4687 | uint16_t flags; /* Meter flags. */ | |
4688 | uint16_t n_bands; /* Number of meter bands. */ | |
4689 | struct ofputil_meter_band *bands; | |
4690 | }; | |
4691 | ||
4692 | /* | |
4693 | * This is used in instruction validation at flow set-up time, | |
4694 | * as flows may not use non-existing meters. | |
4695 | * This is also used by ofproto-providers to translate OpenFlow meter_ids | |
4696 | * in METER instructions to the corresponding provider meter IDs. | |
4697 | * Return value of UINT32_MAX signifies an invalid meter. | |
4698 | */ | |
4699 | uint32_t | |
4700 | ofproto_get_provider_meter_id(const struct ofproto * ofproto, | |
4701 | uint32_t of_meter_id) | |
4702 | { | |
4703 | if (of_meter_id && of_meter_id <= ofproto->meter_features.max_meters) { | |
4704 | const struct meter *meter = ofproto->meters[of_meter_id]; | |
4705 | if (meter) { | |
4706 | return meter->provider_meter_id.uint32; | |
4707 | } | |
4708 | } | |
4709 | return UINT32_MAX; | |
4710 | } | |
4711 | ||
4712 | static void | |
4713 | meter_update(struct meter *meter, const struct ofputil_meter_config *config) | |
4714 | { | |
4715 | free(meter->bands); | |
4716 | ||
4717 | meter->flags = config->flags; | |
4718 | meter->n_bands = config->n_bands; | |
4719 | meter->bands = xmemdup(config->bands, | |
4720 | config->n_bands * sizeof *meter->bands); | |
4721 | } | |
4722 | ||
4723 | static struct meter * | |
4724 | meter_create(const struct ofputil_meter_config *config, | |
4725 | ofproto_meter_id provider_meter_id) | |
4726 | { | |
4727 | struct meter *meter; | |
4728 | ||
4729 | meter = xzalloc(sizeof *meter); | |
4730 | meter->provider_meter_id = provider_meter_id; | |
4731 | meter->created = time_msec(); | |
4732 | list_init(&meter->rules); | |
4733 | ||
4734 | meter_update(meter, config); | |
4735 | ||
4736 | return meter; | |
4737 | } | |
4738 | ||
6b3f7f02 JR |
4739 | static void |
4740 | meter_delete(struct ofproto *ofproto, uint32_t first, uint32_t last) | |
4741 | { | |
4742 | uint32_t mid; | |
4743 | for (mid = first; mid <= last; ++mid) { | |
4744 | struct meter *meter = ofproto->meters[mid]; | |
4745 | if (meter) { | |
4746 | ofproto->meters[mid] = NULL; | |
4747 | ofproto->ofproto_class->meter_del(ofproto, | |
4748 | meter->provider_meter_id); | |
4749 | free(meter->bands); | |
4750 | free(meter); | |
4751 | } | |
4752 | } | |
4753 | } | |
4754 | ||
9cae45dc JR |
4755 | static enum ofperr |
4756 | handle_add_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm) | |
4757 | { | |
4758 | ofproto_meter_id provider_meter_id = { UINT32_MAX }; | |
4759 | struct meter **meterp = &ofproto->meters[mm->meter.meter_id]; | |
4760 | enum ofperr error; | |
4761 | ||
4762 | if (*meterp) { | |
4763 | return OFPERR_OFPMMFC_METER_EXISTS; | |
4764 | } | |
4765 | ||
4766 | error = ofproto->ofproto_class->meter_set(ofproto, &provider_meter_id, | |
4767 | &mm->meter); | |
4768 | if (!error) { | |
4769 | ovs_assert(provider_meter_id.uint32 != UINT32_MAX); | |
4770 | *meterp = meter_create(&mm->meter, provider_meter_id); | |
4771 | } | |
4772 | return 0; | |
4773 | } | |
4774 | ||
4775 | static enum ofperr | |
4776 | handle_modify_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm) | |
4777 | { | |
4778 | struct meter *meter = ofproto->meters[mm->meter.meter_id]; | |
4779 | enum ofperr error; | |
4780 | ||
4781 | if (!meter) { | |
4782 | return OFPERR_OFPMMFC_UNKNOWN_METER; | |
4783 | } | |
4784 | ||
4785 | error = ofproto->ofproto_class->meter_set(ofproto, | |
4786 | &meter->provider_meter_id, | |
4787 | &mm->meter); | |
4788 | ovs_assert(meter->provider_meter_id.uint32 != UINT32_MAX); | |
4789 | if (!error) { | |
4790 | meter_update(meter, &mm->meter); | |
4791 | } | |
4792 | return error; | |
4793 | } | |
4794 | ||
4795 | static enum ofperr | |
4796 | handle_delete_meter(struct ofconn *ofconn, const struct ofp_header *oh, | |
4797 | struct ofputil_meter_mod *mm) | |
4798 | { | |
4799 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
4800 | uint32_t meter_id = mm->meter.meter_id; | |
a8e547c1 BP |
4801 | struct rule_collection rules; |
4802 | enum ofperr error = 0; | |
9cae45dc | 4803 | uint32_t first, last; |
9cae45dc JR |
4804 | |
4805 | if (meter_id == OFPM13_ALL) { | |
4806 | first = 1; | |
4807 | last = ofproto->meter_features.max_meters; | |
4808 | } else { | |
4809 | if (!meter_id || meter_id > ofproto->meter_features.max_meters) { | |
4810 | return 0; | |
4811 | } | |
4812 | first = last = meter_id; | |
4813 | } | |
4814 | ||
4815 | /* First delete the rules that use this meter. If any of those rules are | |
4816 | * currently being modified, postpone the whole operation until later. */ | |
a8e547c1 | 4817 | rule_collection_init(&rules); |
9cae45dc JR |
4818 | for (meter_id = first; meter_id <= last; ++meter_id) { |
4819 | struct meter *meter = ofproto->meters[meter_id]; | |
4820 | if (meter && !list_is_empty(&meter->rules)) { | |
4821 | struct rule *rule; | |
4822 | ||
4823 | LIST_FOR_EACH (rule, meter_list_node, &meter->rules) { | |
4824 | if (rule->pending) { | |
a8e547c1 BP |
4825 | error = OFPROTO_POSTPONE; |
4826 | goto exit; | |
9cae45dc | 4827 | } |
a8e547c1 | 4828 | rule_collection_add(&rules, rule); |
9cae45dc JR |
4829 | } |
4830 | } | |
4831 | } | |
a8e547c1 | 4832 | if (rules.n > 0) { |
9cae45dc JR |
4833 | delete_flows__(ofproto, ofconn, oh, &rules, OFPRR_METER_DELETE); |
4834 | } | |
4835 | ||
4836 | /* Delete the meters. */ | |
6b3f7f02 | 4837 | meter_delete(ofproto, first, last); |
9cae45dc | 4838 | |
a8e547c1 BP |
4839 | exit: |
4840 | rule_collection_destroy(&rules); | |
4841 | ||
4842 | return error; | |
9cae45dc JR |
4843 | } |
4844 | ||
4845 | static enum ofperr | |
4846 | handle_meter_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
4847 | { | |
4848 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
4849 | struct ofputil_meter_mod mm; | |
4850 | uint64_t bands_stub[256 / 8]; | |
4851 | struct ofpbuf bands; | |
4852 | uint32_t meter_id; | |
4853 | enum ofperr error; | |
4854 | ||
4855 | error = reject_slave_controller(ofconn); | |
4856 | if (error) { | |
4857 | return error; | |
4858 | } | |
4859 | ||
4860 | ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub); | |
4861 | ||
4862 | error = ofputil_decode_meter_mod(oh, &mm, &bands); | |
4863 | if (error) { | |
4864 | goto exit_free_bands; | |
4865 | } | |
4866 | ||
4867 | meter_id = mm.meter.meter_id; | |
4868 | ||
4869 | if (mm.command != OFPMC13_DELETE) { | |
4870 | /* Fails also when meters are not implemented by the provider. */ | |
b31e8700 | 4871 | if (meter_id == 0 || meter_id > OFPM13_MAX) { |
9cae45dc JR |
4872 | error = OFPERR_OFPMMFC_INVALID_METER; |
4873 | goto exit_free_bands; | |
b31e8700 JR |
4874 | } else if (meter_id > ofproto->meter_features.max_meters) { |
4875 | error = OFPERR_OFPMMFC_OUT_OF_METERS; | |
4876 | goto exit_free_bands; | |
9cae45dc JR |
4877 | } |
4878 | if (mm.meter.n_bands > ofproto->meter_features.max_bands) { | |
4879 | error = OFPERR_OFPMMFC_OUT_OF_BANDS; | |
4880 | goto exit_free_bands; | |
4881 | } | |
4882 | } | |
4883 | ||
4884 | switch (mm.command) { | |
4885 | case OFPMC13_ADD: | |
4886 | error = handle_add_meter(ofproto, &mm); | |
4887 | break; | |
4888 | ||
4889 | case OFPMC13_MODIFY: | |
4890 | error = handle_modify_meter(ofproto, &mm); | |
4891 | break; | |
4892 | ||
4893 | case OFPMC13_DELETE: | |
4894 | error = handle_delete_meter(ofconn, oh, &mm); | |
4895 | break; | |
4896 | ||
4897 | default: | |
4898 | error = OFPERR_OFPMMFC_BAD_COMMAND; | |
4899 | break; | |
4900 | } | |
4901 | ||
4902 | exit_free_bands: | |
4903 | ofpbuf_uninit(&bands); | |
4904 | return error; | |
4905 | } | |
4906 | ||
4907 | static enum ofperr | |
4908 | handle_meter_features_request(struct ofconn *ofconn, | |
4909 | const struct ofp_header *request) | |
4910 | { | |
4911 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
4912 | struct ofputil_meter_features features; | |
4913 | struct ofpbuf *b; | |
4914 | ||
4915 | if (ofproto->ofproto_class->meter_get_features) { | |
4916 | ofproto->ofproto_class->meter_get_features(ofproto, &features); | |
4917 | } else { | |
4918 | memset(&features, 0, sizeof features); | |
4919 | } | |
4920 | b = ofputil_encode_meter_features_reply(&features, request); | |
4921 | ||
4922 | ofconn_send_reply(ofconn, b); | |
4923 | return 0; | |
4924 | } | |
4925 | ||
4926 | static enum ofperr | |
4927 | handle_meter_request(struct ofconn *ofconn, const struct ofp_header *request, | |
4928 | enum ofptype type) | |
4929 | { | |
4930 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
4931 | struct list replies; | |
4932 | uint64_t bands_stub[256 / 8]; | |
4933 | struct ofpbuf bands; | |
4934 | uint32_t meter_id, first, last; | |
4935 | ||
4936 | ofputil_decode_meter_request(request, &meter_id); | |
4937 | ||
4938 | if (meter_id == OFPM13_ALL) { | |
4939 | first = 1; | |
4940 | last = ofproto->meter_features.max_meters; | |
4941 | } else { | |
4942 | if (!meter_id || meter_id > ofproto->meter_features.max_meters || | |
4943 | !ofproto->meters[meter_id]) { | |
4944 | return OFPERR_OFPMMFC_UNKNOWN_METER; | |
4945 | } | |
4946 | first = last = meter_id; | |
4947 | } | |
4948 | ||
4949 | ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub); | |
4950 | ofpmp_init(&replies, request); | |
4951 | ||
4952 | for (meter_id = first; meter_id <= last; ++meter_id) { | |
4953 | struct meter *meter = ofproto->meters[meter_id]; | |
4954 | if (!meter) { | |
4955 | continue; /* Skip non-existing meters. */ | |
4956 | } | |
261bd854 | 4957 | if (type == OFPTYPE_METER_STATS_REQUEST) { |
9cae45dc JR |
4958 | struct ofputil_meter_stats stats; |
4959 | ||
4960 | stats.meter_id = meter_id; | |
4961 | ||
4962 | /* Provider sets the packet and byte counts, we do the rest. */ | |
4963 | stats.flow_count = list_size(&meter->rules); | |
4964 | calc_duration(meter->created, time_msec(), | |
4965 | &stats.duration_sec, &stats.duration_nsec); | |
4966 | stats.n_bands = meter->n_bands; | |
4967 | ofpbuf_clear(&bands); | |
4968 | stats.bands | |
4969 | = ofpbuf_put_uninit(&bands, | |
4970 | meter->n_bands * sizeof *stats.bands); | |
4971 | ||
4972 | if (!ofproto->ofproto_class->meter_get(ofproto, | |
4973 | meter->provider_meter_id, | |
4974 | &stats)) { | |
4975 | ofputil_append_meter_stats(&replies, &stats); | |
4976 | } | |
4977 | } else { /* type == OFPTYPE_METER_CONFIG_REQUEST */ | |
4978 | struct ofputil_meter_config config; | |
4979 | ||
4980 | config.meter_id = meter_id; | |
4981 | config.flags = meter->flags; | |
4982 | config.n_bands = meter->n_bands; | |
4983 | config.bands = meter->bands; | |
4984 | ofputil_append_meter_config(&replies, &config); | |
4985 | } | |
4986 | } | |
4987 | ||
4988 | ofconn_send_replies(ofconn, &replies); | |
4989 | ofpbuf_uninit(&bands); | |
4990 | return 0; | |
4991 | } | |
4992 | ||
7395c052 NZ |
4993 | bool |
4994 | ofproto_group_lookup(const struct ofproto *ofproto, uint32_t group_id, | |
4995 | struct ofgroup **group) | |
4996 | OVS_TRY_RDLOCK(true, (*group)->rwlock) | |
4997 | { | |
4998 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
4999 | HMAP_FOR_EACH_IN_BUCKET (*group, hmap_node, | |
5000 | hash_int(group_id, 0), &ofproto->groups) { | |
5001 | if ((*group)->group_id == group_id) { | |
5002 | ovs_rwlock_rdlock(&(*group)->rwlock); | |
5003 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5004 | return true; | |
5005 | } | |
5006 | } | |
5007 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5008 | return false; | |
5009 | } | |
5010 | ||
5011 | void | |
5012 | ofproto_group_release(struct ofgroup *group) | |
5013 | OVS_RELEASES(group->rwlock) | |
5014 | { | |
5015 | ovs_rwlock_unlock(&group->rwlock); | |
5016 | } | |
5017 | ||
5018 | static bool | |
5019 | ofproto_group_write_lookup(const struct ofproto *ofproto, uint32_t group_id, | |
5020 | struct ofgroup **group) | |
5021 | OVS_TRY_WRLOCK(true, ofproto->groups_rwlock) | |
5022 | OVS_TRY_WRLOCK(true, (*group)->rwlock) | |
5023 | { | |
5024 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
5025 | HMAP_FOR_EACH_IN_BUCKET (*group, hmap_node, | |
5026 | hash_int(group_id, 0), &ofproto->groups) { | |
5027 | if ((*group)->group_id == group_id) { | |
5028 | ovs_rwlock_wrlock(&(*group)->rwlock); | |
5029 | return true; | |
5030 | } | |
5031 | } | |
5032 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5033 | return false; | |
5034 | } | |
5035 | ||
5036 | static bool | |
5037 | ofproto_group_exists(const struct ofproto *ofproto, uint32_t group_id) | |
5038 | OVS_REQ_RDLOCK(ofproto->groups_rwlock) | |
5039 | { | |
5040 | struct ofgroup *grp; | |
5041 | ||
5042 | HMAP_FOR_EACH_IN_BUCKET (grp, hmap_node, | |
5043 | hash_int(group_id, 0), &ofproto->groups) { | |
5044 | if (grp->group_id == group_id) { | |
5045 | return true; | |
5046 | } | |
5047 | } | |
5048 | return false; | |
5049 | } | |
5050 | ||
5051 | static void | |
5052 | append_group_stats(struct ofgroup *group, struct list *replies) | |
5053 | OVS_REQ_RDLOCK(group->rwlock) | |
5054 | { | |
5055 | struct ofputil_group_stats ogs; | |
5056 | struct ofproto *ofproto = group->ofproto; | |
5057 | long long int now = time_msec(); | |
5058 | int error; | |
5059 | ||
646b2a9c SH |
5060 | ogs.bucket_stats = xmalloc(group->n_buckets * sizeof *ogs.bucket_stats); |
5061 | ||
7395c052 NZ |
5062 | error = (ofproto->ofproto_class->group_get_stats |
5063 | ? ofproto->ofproto_class->group_get_stats(group, &ogs) | |
5064 | : EOPNOTSUPP); | |
5065 | if (error) { | |
5066 | ogs.ref_count = UINT32_MAX; | |
5067 | ogs.packet_count = UINT64_MAX; | |
5068 | ogs.byte_count = UINT64_MAX; | |
5069 | ogs.n_buckets = group->n_buckets; | |
5070 | memset(ogs.bucket_stats, 0xff, | |
5071 | ogs.n_buckets * sizeof *ogs.bucket_stats); | |
5072 | } | |
5073 | ||
5074 | ogs.group_id = group->group_id; | |
5075 | calc_duration(group->created, now, &ogs.duration_sec, &ogs.duration_nsec); | |
5076 | ||
5077 | ofputil_append_group_stats(replies, &ogs); | |
646b2a9c SH |
5078 | |
5079 | free(ogs.bucket_stats); | |
7395c052 NZ |
5080 | } |
5081 | ||
5082 | static enum ofperr | |
5083 | handle_group_stats_request(struct ofconn *ofconn, | |
5084 | const struct ofp_header *request) | |
5085 | { | |
5086 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5087 | struct list replies; | |
5088 | enum ofperr error; | |
5089 | struct ofgroup *group; | |
5090 | uint32_t group_id; | |
5091 | ||
5092 | error = ofputil_decode_group_stats_request(request, &group_id); | |
5093 | if (error) { | |
5094 | return error; | |
5095 | } | |
5096 | ||
5097 | ofpmp_init(&replies, request); | |
5098 | ||
5099 | if (group_id == OFPG_ALL) { | |
5100 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
5101 | HMAP_FOR_EACH (group, hmap_node, &ofproto->groups) { | |
5102 | ovs_rwlock_rdlock(&group->rwlock); | |
5103 | append_group_stats(group, &replies); | |
5104 | ovs_rwlock_unlock(&group->rwlock); | |
5105 | } | |
5106 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5107 | } else { | |
5108 | if (ofproto_group_lookup(ofproto, group_id, &group)) { | |
5109 | append_group_stats(group, &replies); | |
5110 | ofproto_group_release(group); | |
5111 | } | |
5112 | } | |
5113 | ||
5114 | ofconn_send_replies(ofconn, &replies); | |
5115 | ||
5116 | return 0; | |
5117 | } | |
5118 | ||
5119 | static enum ofperr | |
5120 | handle_group_desc_stats_request(struct ofconn *ofconn, | |
5121 | const struct ofp_header *request) | |
5122 | { | |
5123 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5124 | struct list replies; | |
5125 | struct ofputil_group_desc gds; | |
5126 | struct ofgroup *group; | |
5127 | ||
5128 | ofpmp_init(&replies, request); | |
5129 | ||
5130 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
5131 | HMAP_FOR_EACH (group, hmap_node, &ofproto->groups) { | |
5132 | gds.group_id = group->group_id; | |
5133 | gds.type = group->type; | |
5134 | ofputil_append_group_desc_reply(&gds, &group->buckets, &replies); | |
5135 | } | |
5136 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5137 | ||
5138 | ofconn_send_replies(ofconn, &replies); | |
5139 | ||
5140 | return 0; | |
5141 | } | |
5142 | ||
5143 | static enum ofperr | |
5144 | handle_group_features_stats_request(struct ofconn *ofconn, | |
5145 | const struct ofp_header *request) | |
5146 | { | |
5147 | struct ofproto *p = ofconn_get_ofproto(ofconn); | |
5148 | struct ofpbuf *msg; | |
5149 | ||
5150 | msg = ofputil_encode_group_features_reply(&p->ogf, request); | |
5151 | if (msg) { | |
5152 | ofconn_send_reply(ofconn, msg); | |
5153 | } | |
5154 | ||
5155 | return 0; | |
5156 | } | |
5157 | ||
5158 | /* Implements OFPGC11_ADD | |
5159 | * in which no matching flow already exists in the flow table. | |
5160 | * | |
5161 | * Adds the flow specified by 'ofm', which is followed by 'n_actions' | |
5162 | * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow | |
5163 | * error code on failure, or OFPROTO_POSTPONE if the operation cannot be | |
5164 | * initiated now but may be retried later. | |
5165 | * | |
5166 | * Upon successful return, takes ownership of 'fm->ofpacts'. On failure, | |
5167 | * ownership remains with the caller. | |
5168 | * | |
5169 | * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id, | |
5170 | * if any. */ | |
5171 | static enum ofperr | |
5172 | add_group(struct ofproto *ofproto, struct ofputil_group_mod *gm) | |
5173 | { | |
5174 | struct ofgroup *ofgroup; | |
5175 | enum ofperr error; | |
5176 | ||
5177 | if (gm->group_id > OFPG_MAX) { | |
5178 | return OFPERR_OFPGMFC_INVALID_GROUP; | |
5179 | } | |
5180 | if (gm->type > OFPGT11_FF) { | |
5181 | return OFPERR_OFPGMFC_BAD_TYPE; | |
5182 | } | |
5183 | ||
5184 | /* Allocate new group and initialize it. */ | |
5185 | ofgroup = ofproto->ofproto_class->group_alloc(); | |
5186 | if (!ofgroup) { | |
5187 | VLOG_WARN_RL(&rl, "%s: failed to create group", ofproto->name); | |
5188 | return OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
5189 | } | |
5190 | ||
5191 | ovs_rwlock_init(&ofgroup->rwlock); | |
5192 | ofgroup->ofproto = ofproto; | |
5193 | ofgroup->group_id = gm->group_id; | |
5194 | ofgroup->type = gm->type; | |
5195 | ofgroup->created = ofgroup->modified = time_msec(); | |
5196 | ||
5197 | list_move(&ofgroup->buckets, &gm->buckets); | |
5198 | ofgroup->n_buckets = list_size(&ofgroup->buckets); | |
5199 | ||
5200 | /* Construct called BEFORE any locks are held. */ | |
5201 | error = ofproto->ofproto_class->group_construct(ofgroup); | |
5202 | if (error) { | |
5203 | goto free_out; | |
5204 | } | |
5205 | ||
5206 | /* We wrlock as late as possible to minimize the time we jam any other | |
5207 | * threads: No visible state changes before acquiring the lock. */ | |
5208 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
5209 | ||
5210 | if (ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) { | |
5211 | error = OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
5212 | goto unlock_out; | |
5213 | } | |
5214 | ||
5215 | if (ofproto_group_exists(ofproto, gm->group_id)) { | |
5216 | error = OFPERR_OFPGMFC_GROUP_EXISTS; | |
5217 | goto unlock_out; | |
5218 | } | |
5219 | ||
5220 | if (!error) { | |
5221 | /* Insert new group. */ | |
5222 | hmap_insert(&ofproto->groups, &ofgroup->hmap_node, | |
5223 | hash_int(ofgroup->group_id, 0)); | |
5224 | ofproto->n_groups[ofgroup->type]++; | |
5225 | ||
5226 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5227 | return error; | |
5228 | } | |
5229 | ||
5230 | unlock_out: | |
5231 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5232 | ofproto->ofproto_class->group_destruct(ofgroup); | |
5233 | free_out: | |
5234 | ofputil_bucket_list_destroy(&ofgroup->buckets); | |
5235 | ofproto->ofproto_class->group_dealloc(ofgroup); | |
5236 | ||
5237 | return error; | |
5238 | } | |
5239 | ||
5240 | /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on | |
5241 | * failure. | |
5242 | * | |
5243 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, | |
5244 | * if any. */ | |
5245 | static enum ofperr | |
5246 | modify_group(struct ofproto *ofproto, struct ofputil_group_mod *gm) | |
5247 | { | |
5248 | struct ofgroup *ofgroup; | |
5249 | struct ofgroup *victim; | |
5250 | enum ofperr error; | |
5251 | ||
5252 | if (gm->group_id > OFPG_MAX) { | |
5253 | return OFPERR_OFPGMFC_INVALID_GROUP; | |
5254 | } | |
5255 | ||
5256 | if (gm->type > OFPGT11_FF) { | |
5257 | return OFPERR_OFPGMFC_BAD_TYPE; | |
5258 | } | |
5259 | ||
5260 | victim = ofproto->ofproto_class->group_alloc(); | |
5261 | if (!victim) { | |
5262 | VLOG_WARN_RL(&rl, "%s: failed to allocate group", ofproto->name); | |
5263 | return OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
5264 | } | |
5265 | ||
5266 | if (!ofproto_group_write_lookup(ofproto, gm->group_id, &ofgroup)) { | |
5267 | error = OFPERR_OFPGMFC_UNKNOWN_GROUP; | |
5268 | goto free_out; | |
5269 | } | |
5270 | /* Both group's and its container's write locks held now. | |
5271 | * Also, n_groups[] is protected by ofproto->groups_rwlock. */ | |
5272 | if (ofgroup->type != gm->type | |
5273 | && ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) { | |
5274 | error = OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
5275 | goto unlock_out; | |
5276 | } | |
5277 | ||
5278 | *victim = *ofgroup; | |
5279 | list_move(&victim->buckets, &ofgroup->buckets); | |
5280 | ||
5281 | ofgroup->type = gm->type; | |
5282 | list_move(&ofgroup->buckets, &gm->buckets); | |
5283 | ofgroup->n_buckets = list_size(&ofgroup->buckets); | |
5284 | ||
5285 | error = ofproto->ofproto_class->group_modify(ofgroup, victim); | |
5286 | if (!error) { | |
5287 | ofputil_bucket_list_destroy(&victim->buckets); | |
5288 | ofproto->n_groups[victim->type]--; | |
5289 | ofproto->n_groups[ofgroup->type]++; | |
5290 | ofgroup->modified = time_msec(); | |
5291 | } else { | |
5292 | ofputil_bucket_list_destroy(&ofgroup->buckets); | |
5293 | ||
5294 | *ofgroup = *victim; | |
5295 | list_move(&ofgroup->buckets, &victim->buckets); | |
5296 | } | |
5297 | ||
5298 | unlock_out: | |
5299 | ovs_rwlock_unlock(&ofgroup->rwlock); | |
5300 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5301 | free_out: | |
5302 | ofproto->ofproto_class->group_dealloc(victim); | |
5303 | return error; | |
5304 | } | |
5305 | ||
5306 | static void | |
5307 | delete_group__(struct ofproto *ofproto, struct ofgroup *ofgroup) | |
5308 | OVS_RELEASES(ofproto->groups_rwlock) | |
5309 | { | |
5310 | /* Must wait until existing readers are done, | |
5311 | * while holding the container's write lock at the same time. */ | |
5312 | ovs_rwlock_wrlock(&ofgroup->rwlock); | |
5313 | hmap_remove(&ofproto->groups, &ofgroup->hmap_node); | |
5314 | /* No-one can find this group any more. */ | |
5315 | ofproto->n_groups[ofgroup->type]--; | |
5316 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5317 | ||
5318 | ofproto->ofproto_class->group_destruct(ofgroup); | |
5319 | ofputil_bucket_list_destroy(&ofgroup->buckets); | |
5320 | ovs_rwlock_unlock(&ofgroup->rwlock); | |
5321 | ovs_rwlock_destroy(&ofgroup->rwlock); | |
5322 | ofproto->ofproto_class->group_dealloc(ofgroup); | |
5323 | } | |
5324 | ||
5325 | /* Implements OFPGC_DELETE. */ | |
5326 | static void | |
5327 | delete_group(struct ofproto *ofproto, uint32_t group_id) | |
5328 | { | |
5329 | struct ofgroup *ofgroup; | |
5330 | ||
5331 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
5332 | if (group_id == OFPG_ALL) { | |
5333 | for (;;) { | |
5334 | struct hmap_node *node = hmap_first(&ofproto->groups); | |
5335 | if (!node) { | |
5336 | break; | |
5337 | } | |
5338 | ofgroup = CONTAINER_OF(node, struct ofgroup, hmap_node); | |
5339 | delete_group__(ofproto, ofgroup); | |
5340 | /* Lock for each node separately, so that we will not jam the | |
5341 | * other threads for too long time. */ | |
5342 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
5343 | } | |
5344 | } else { | |
5345 | HMAP_FOR_EACH_IN_BUCKET (ofgroup, hmap_node, | |
5346 | hash_int(group_id, 0), &ofproto->groups) { | |
5347 | if (ofgroup->group_id == group_id) { | |
5348 | delete_group__(ofproto, ofgroup); | |
5349 | return; | |
5350 | } | |
5351 | } | |
5352 | } | |
5353 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5354 | } | |
5355 | ||
5356 | static enum ofperr | |
5357 | handle_group_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
5358 | { | |
5359 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5360 | struct ofputil_group_mod gm; | |
5361 | enum ofperr error; | |
5362 | ||
5363 | error = reject_slave_controller(ofconn); | |
5364 | if (error) { | |
5365 | return error; | |
5366 | } | |
5367 | ||
5368 | error = ofputil_decode_group_mod(oh, &gm); | |
5369 | if (error) { | |
5370 | return error; | |
5371 | } | |
5372 | ||
5373 | switch (gm.command) { | |
5374 | case OFPGC11_ADD: | |
5375 | return add_group(ofproto, &gm); | |
5376 | ||
5377 | case OFPGC11_MODIFY: | |
5378 | return modify_group(ofproto, &gm); | |
5379 | ||
5380 | case OFPGC11_DELETE: | |
5381 | delete_group(ofproto, gm.group_id); | |
5382 | return 0; | |
5383 | ||
5384 | default: | |
5385 | if (gm.command > OFPGC11_DELETE) { | |
5386 | VLOG_WARN_RL(&rl, "%s: Invalid group_mod command type %d", | |
5387 | ofproto->name, gm.command); | |
5388 | } | |
5389 | return OFPERR_OFPGMFC_BAD_COMMAND; | |
5390 | } | |
5391 | } | |
5392 | ||
918f2b82 AZ |
5393 | static enum ofperr |
5394 | handle_table_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
5395 | { | |
5396 | struct ofputil_table_mod tm; | |
5397 | enum ofperr error; | |
5398 | ||
5399 | error = reject_slave_controller(ofconn); | |
5400 | if (error) { | |
5401 | return error; | |
5402 | } | |
5403 | ||
5404 | error = ofputil_decode_table_mod(oh, &tm); | |
5405 | if (error) { | |
5406 | return error; | |
5407 | } | |
5408 | ||
5409 | /* XXX Actual table mod support is not implemented yet. */ | |
5410 | return 0; | |
5411 | } | |
5412 | ||
90bf1e07 | 5413 | static enum ofperr |
d1e2cf21 | 5414 | handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg) |
064af421 | 5415 | { |
d1e2cf21 | 5416 | const struct ofp_header *oh = msg->data; |
982697a4 | 5417 | enum ofptype type; |
90bf1e07 | 5418 | enum ofperr error; |
064af421 | 5419 | |
982697a4 | 5420 | error = ofptype_decode(&type, oh); |
d1e2cf21 BP |
5421 | if (error) { |
5422 | return error; | |
5423 | } | |
064af421 | 5424 | |
982697a4 | 5425 | switch (type) { |
d1e2cf21 | 5426 | /* OpenFlow requests. */ |
982697a4 | 5427 | case OFPTYPE_ECHO_REQUEST: |
d1e2cf21 | 5428 | return handle_echo_request(ofconn, oh); |
064af421 | 5429 | |
982697a4 | 5430 | case OFPTYPE_FEATURES_REQUEST: |
d1e2cf21 | 5431 | return handle_features_request(ofconn, oh); |
064af421 | 5432 | |
982697a4 | 5433 | case OFPTYPE_GET_CONFIG_REQUEST: |
d1e2cf21 | 5434 | return handle_get_config_request(ofconn, oh); |
064af421 | 5435 | |
982697a4 BP |
5436 | case OFPTYPE_SET_CONFIG: |
5437 | return handle_set_config(ofconn, oh); | |
064af421 | 5438 | |
982697a4 BP |
5439 | case OFPTYPE_PACKET_OUT: |
5440 | return handle_packet_out(ofconn, oh); | |
064af421 | 5441 | |
982697a4 | 5442 | case OFPTYPE_PORT_MOD: |
d1e2cf21 | 5443 | return handle_port_mod(ofconn, oh); |
064af421 | 5444 | |
982697a4 | 5445 | case OFPTYPE_FLOW_MOD: |
2e4f5fcf | 5446 | return handle_flow_mod(ofconn, oh); |
064af421 | 5447 | |
7395c052 NZ |
5448 | case OFPTYPE_GROUP_MOD: |
5449 | return handle_group_mod(ofconn, oh); | |
5450 | ||
918f2b82 AZ |
5451 | case OFPTYPE_TABLE_MOD: |
5452 | return handle_table_mod(ofconn, oh); | |
5453 | ||
9cae45dc JR |
5454 | case OFPTYPE_METER_MOD: |
5455 | return handle_meter_mod(ofconn, oh); | |
5456 | ||
982697a4 | 5457 | case OFPTYPE_BARRIER_REQUEST: |
d1e2cf21 | 5458 | return handle_barrier_request(ofconn, oh); |
064af421 | 5459 | |
6ea4776b JR |
5460 | case OFPTYPE_ROLE_REQUEST: |
5461 | return handle_role_request(ofconn, oh); | |
5462 | ||
d1e2cf21 | 5463 | /* OpenFlow replies. */ |
982697a4 | 5464 | case OFPTYPE_ECHO_REPLY: |
d1e2cf21 | 5465 | return 0; |
246e61ea | 5466 | |
d1e2cf21 | 5467 | /* Nicira extension requests. */ |
982697a4 | 5468 | case OFPTYPE_FLOW_MOD_TABLE_ID: |
6c1491fb | 5469 | return handle_nxt_flow_mod_table_id(ofconn, oh); |
d1e2cf21 | 5470 | |
982697a4 | 5471 | case OFPTYPE_SET_FLOW_FORMAT: |
d1e2cf21 BP |
5472 | return handle_nxt_set_flow_format(ofconn, oh); |
5473 | ||
982697a4 | 5474 | case OFPTYPE_SET_PACKET_IN_FORMAT: |
54834960 EJ |
5475 | return handle_nxt_set_packet_in_format(ofconn, oh); |
5476 | ||
982697a4 | 5477 | case OFPTYPE_SET_CONTROLLER_ID: |
a7349929 BP |
5478 | return handle_nxt_set_controller_id(ofconn, oh); |
5479 | ||
982697a4 | 5480 | case OFPTYPE_FLOW_AGE: |
f27f2134 BP |
5481 | /* Nothing to do. */ |
5482 | return 0; | |
5483 | ||
982697a4 | 5484 | case OFPTYPE_FLOW_MONITOR_CANCEL: |
2b07c8b1 BP |
5485 | return handle_flow_monitor_cancel(ofconn, oh); |
5486 | ||
982697a4 | 5487 | case OFPTYPE_SET_ASYNC_CONFIG: |
80d5aefd BP |
5488 | return handle_nxt_set_async_config(ofconn, oh); |
5489 | ||
c423b3b3 AC |
5490 | case OFPTYPE_GET_ASYNC_REQUEST: |
5491 | return handle_nxt_get_async_request(ofconn, oh); | |
5492 | ||
349adfb2 | 5493 | /* Statistics requests. */ |
982697a4 BP |
5494 | case OFPTYPE_DESC_STATS_REQUEST: |
5495 | return handle_desc_stats_request(ofconn, oh); | |
5496 | ||
5497 | case OFPTYPE_FLOW_STATS_REQUEST: | |
5498 | return handle_flow_stats_request(ofconn, oh); | |
5499 | ||
5500 | case OFPTYPE_AGGREGATE_STATS_REQUEST: | |
5501 | return handle_aggregate_stats_request(ofconn, oh); | |
5502 | ||
5503 | case OFPTYPE_TABLE_STATS_REQUEST: | |
5504 | return handle_table_stats_request(ofconn, oh); | |
5505 | ||
5506 | case OFPTYPE_PORT_STATS_REQUEST: | |
5507 | return handle_port_stats_request(ofconn, oh); | |
5508 | ||
5509 | case OFPTYPE_QUEUE_STATS_REQUEST: | |
5510 | return handle_queue_stats_request(ofconn, oh); | |
5511 | ||
5512 | case OFPTYPE_PORT_DESC_STATS_REQUEST: | |
5513 | return handle_port_desc_stats_request(ofconn, oh); | |
5514 | ||
5515 | case OFPTYPE_FLOW_MONITOR_STATS_REQUEST: | |
5516 | return handle_flow_monitor_request(ofconn, oh); | |
5517 | ||
261bd854 BP |
5518 | case OFPTYPE_METER_STATS_REQUEST: |
5519 | case OFPTYPE_METER_CONFIG_STATS_REQUEST: | |
9cae45dc JR |
5520 | return handle_meter_request(ofconn, oh, type); |
5521 | ||
261bd854 | 5522 | case OFPTYPE_METER_FEATURES_STATS_REQUEST: |
9cae45dc JR |
5523 | return handle_meter_features_request(ofconn, oh); |
5524 | ||
261bd854 | 5525 | case OFPTYPE_GROUP_STATS_REQUEST: |
7395c052 NZ |
5526 | return handle_group_stats_request(ofconn, oh); |
5527 | ||
261bd854 | 5528 | case OFPTYPE_GROUP_DESC_STATS_REQUEST: |
7395c052 NZ |
5529 | return handle_group_desc_stats_request(ofconn, oh); |
5530 | ||
261bd854 | 5531 | case OFPTYPE_GROUP_FEATURES_STATS_REQUEST: |
7395c052 NZ |
5532 | return handle_group_features_stats_request(ofconn, oh); |
5533 | ||
5534 | /* FIXME: Change the following once they are implemented: */ | |
5535 | case OFPTYPE_QUEUE_GET_CONFIG_REQUEST: | |
261bd854 | 5536 | case OFPTYPE_TABLE_FEATURES_STATS_REQUEST: |
2e1ae200 JR |
5537 | return OFPERR_OFPBRC_BAD_TYPE; |
5538 | ||
982697a4 BP |
5539 | case OFPTYPE_HELLO: |
5540 | case OFPTYPE_ERROR: | |
5541 | case OFPTYPE_FEATURES_REPLY: | |
5542 | case OFPTYPE_GET_CONFIG_REPLY: | |
5543 | case OFPTYPE_PACKET_IN: | |
5544 | case OFPTYPE_FLOW_REMOVED: | |
5545 | case OFPTYPE_PORT_STATUS: | |
5546 | case OFPTYPE_BARRIER_REPLY: | |
c545d38d | 5547 | case OFPTYPE_QUEUE_GET_CONFIG_REPLY: |
982697a4 BP |
5548 | case OFPTYPE_DESC_STATS_REPLY: |
5549 | case OFPTYPE_FLOW_STATS_REPLY: | |
5550 | case OFPTYPE_QUEUE_STATS_REPLY: | |
5551 | case OFPTYPE_PORT_STATS_REPLY: | |
5552 | case OFPTYPE_TABLE_STATS_REPLY: | |
5553 | case OFPTYPE_AGGREGATE_STATS_REPLY: | |
5554 | case OFPTYPE_PORT_DESC_STATS_REPLY: | |
5555 | case OFPTYPE_ROLE_REPLY: | |
5556 | case OFPTYPE_FLOW_MONITOR_PAUSED: | |
5557 | case OFPTYPE_FLOW_MONITOR_RESUMED: | |
5558 | case OFPTYPE_FLOW_MONITOR_STATS_REPLY: | |
2e1ae200 | 5559 | case OFPTYPE_GET_ASYNC_REPLY: |
261bd854 BP |
5560 | case OFPTYPE_GROUP_STATS_REPLY: |
5561 | case OFPTYPE_GROUP_DESC_STATS_REPLY: | |
5562 | case OFPTYPE_GROUP_FEATURES_STATS_REPLY: | |
5563 | case OFPTYPE_METER_STATS_REPLY: | |
5564 | case OFPTYPE_METER_CONFIG_STATS_REPLY: | |
5565 | case OFPTYPE_METER_FEATURES_STATS_REPLY: | |
5566 | case OFPTYPE_TABLE_FEATURES_STATS_REPLY: | |
064af421 | 5567 | default: |
982697a4 | 5568 | return OFPERR_OFPBRC_BAD_TYPE; |
064af421 | 5569 | } |
d1e2cf21 | 5570 | } |
064af421 | 5571 | |
7ee20df1 | 5572 | static bool |
e03248b7 | 5573 | handle_openflow(struct ofconn *ofconn, const struct ofpbuf *ofp_msg) |
d1e2cf21 BP |
5574 | { |
5575 | int error = handle_openflow__(ofconn, ofp_msg); | |
7ee20df1 | 5576 | if (error && error != OFPROTO_POSTPONE) { |
1be5ff75 | 5577 | ofconn_send_error(ofconn, ofp_msg->data, error); |
064af421 | 5578 | } |
d1e2cf21 | 5579 | COVERAGE_INC(ofproto_recv_openflow); |
7ee20df1 BP |
5580 | return error != OFPROTO_POSTPONE; |
5581 | } | |
5582 | \f | |
5583 | /* Asynchronous operations. */ | |
5584 | ||
5585 | /* Creates and returns a new ofopgroup that is not associated with any | |
5586 | * OpenFlow connection. | |
5587 | * | |
5588 | * The caller should add operations to the returned group with | |
5589 | * ofoperation_create() and then submit it with ofopgroup_submit(). */ | |
5590 | static struct ofopgroup * | |
7024dffe | 5591 | ofopgroup_create_unattached(struct ofproto *ofproto) |
7ee20df1 BP |
5592 | { |
5593 | struct ofopgroup *group = xzalloc(sizeof *group); | |
5594 | group->ofproto = ofproto; | |
5595 | list_init(&group->ofproto_node); | |
5596 | list_init(&group->ops); | |
5597 | list_init(&group->ofconn_node); | |
5598 | return group; | |
5599 | } | |
5600 | ||
7024dffe BP |
5601 | /* Creates and returns a new ofopgroup for 'ofproto'. |
5602 | * | |
5603 | * If 'ofconn' is NULL, the new ofopgroup is not associated with any OpenFlow | |
5604 | * connection. The 'request' and 'buffer_id' arguments are ignored. | |
5605 | * | |
5606 | * If 'ofconn' is nonnull, then the new ofopgroup is associated with 'ofconn'. | |
5607 | * If the ofopgroup eventually fails, then the error reply will include | |
5608 | * 'request'. If the ofopgroup eventually succeeds, then the packet with | |
5609 | * buffer id 'buffer_id' on 'ofconn' will be sent by 'ofconn''s ofproto. | |
7ee20df1 BP |
5610 | * |
5611 | * The caller should add operations to the returned group with | |
5612 | * ofoperation_create() and then submit it with ofopgroup_submit(). */ | |
5613 | static struct ofopgroup * | |
7024dffe BP |
5614 | ofopgroup_create(struct ofproto *ofproto, struct ofconn *ofconn, |
5615 | const struct ofp_header *request, uint32_t buffer_id) | |
7ee20df1 | 5616 | { |
7024dffe BP |
5617 | struct ofopgroup *group = ofopgroup_create_unattached(ofproto); |
5618 | if (ofconn) { | |
5619 | size_t request_len = ntohs(request->length); | |
7ee20df1 | 5620 | |
cb22974d | 5621 | ovs_assert(ofconn_get_ofproto(ofconn) == ofproto); |
7ee20df1 | 5622 | |
7024dffe BP |
5623 | ofconn_add_opgroup(ofconn, &group->ofconn_node); |
5624 | group->ofconn = ofconn; | |
5625 | group->request = xmemdup(request, MIN(request_len, 64)); | |
5626 | group->buffer_id = buffer_id; | |
5627 | } | |
7ee20df1 BP |
5628 | return group; |
5629 | } | |
5630 | ||
5631 | /* Submits 'group' for processing. | |
5632 | * | |
5633 | * If 'group' contains no operations (e.g. none were ever added, or all of the | |
5634 | * ones that were added completed synchronously), then it is destroyed | |
5635 | * immediately. Otherwise it is added to the ofproto's list of pending | |
5636 | * groups. */ | |
5637 | static void | |
5638 | ofopgroup_submit(struct ofopgroup *group) | |
5639 | { | |
e615b0a3 BP |
5640 | if (!group->n_running) { |
5641 | ofopgroup_complete(group); | |
7ee20df1 BP |
5642 | } else { |
5643 | list_push_back(&group->ofproto->pending, &group->ofproto_node); | |
dd5616b3 | 5644 | group->ofproto->n_pending++; |
7ee20df1 BP |
5645 | } |
5646 | } | |
5647 | ||
5648 | static void | |
e615b0a3 | 5649 | ofopgroup_complete(struct ofopgroup *group) |
7ee20df1 | 5650 | { |
e615b0a3 | 5651 | struct ofproto *ofproto = group->ofproto; |
2b07c8b1 BP |
5652 | |
5653 | struct ofconn *abbrev_ofconn; | |
5654 | ovs_be32 abbrev_xid; | |
5655 | ||
e615b0a3 BP |
5656 | struct ofoperation *op, *next_op; |
5657 | int error; | |
5658 | ||
cb22974d | 5659 | ovs_assert(!group->n_running); |
e615b0a3 BP |
5660 | |
5661 | error = 0; | |
5662 | LIST_FOR_EACH (op, group_node, &group->ops) { | |
5663 | if (op->error) { | |
5664 | error = op->error; | |
5665 | break; | |
5666 | } | |
5667 | } | |
5668 | ||
5669 | if (!error && group->ofconn && group->buffer_id != UINT32_MAX) { | |
5670 | LIST_FOR_EACH (op, group_node, &group->ops) { | |
5671 | if (op->type != OFOPERATION_DELETE) { | |
5672 | struct ofpbuf *packet; | |
4e022ec0 | 5673 | ofp_port_t in_port; |
e615b0a3 BP |
5674 | |
5675 | error = ofconn_pktbuf_retrieve(group->ofconn, group->buffer_id, | |
5676 | &packet, &in_port); | |
5677 | if (packet) { | |
35412852 BP |
5678 | struct rule_execute *re; |
5679 | ||
cb22974d | 5680 | ovs_assert(!error); |
35412852 BP |
5681 | |
5682 | ofproto_rule_ref(op->rule); | |
5683 | ||
5684 | re = xmalloc(sizeof *re); | |
5685 | re->rule = op->rule; | |
5686 | re->in_port = in_port; | |
5687 | re->packet = packet; | |
5688 | ||
5689 | if (!guarded_list_push_back(&ofproto->rule_executes, | |
5690 | &re->list_node, 1024)) { | |
5691 | ofproto_rule_unref(op->rule); | |
5692 | ofpbuf_delete(re->packet); | |
5693 | free(re); | |
5694 | } | |
e615b0a3 BP |
5695 | } |
5696 | break; | |
5697 | } | |
5698 | } | |
5699 | } | |
5700 | ||
2b07c8b1 BP |
5701 | if (!error && !list_is_empty(&group->ofconn_node)) { |
5702 | abbrev_ofconn = group->ofconn; | |
5703 | abbrev_xid = group->request->xid; | |
5704 | } else { | |
5705 | abbrev_ofconn = NULL; | |
5706 | abbrev_xid = htonl(0); | |
5707 | } | |
e615b0a3 BP |
5708 | LIST_FOR_EACH_SAFE (op, next_op, group_node, &group->ops) { |
5709 | struct rule *rule = op->rule; | |
2b07c8b1 | 5710 | |
644e2a7c BP |
5711 | /* We generally want to report the change to active OpenFlow flow |
5712 | monitors (e.g. NXST_FLOW_MONITOR). There are three exceptions: | |
5713 | ||
5714 | - The operation failed. | |
5715 | ||
5716 | - The affected rule is not visible to controllers. | |
5717 | ||
5718 | - The operation's only effect was to update rule->modified. */ | |
5719 | if (!(op->error | |
5720 | || ofproto_rule_is_hidden(rule) | |
5721 | || (op->type == OFOPERATION_MODIFY | |
6f00e29b | 5722 | && op->actions |
644e2a7c | 5723 | && rule->flow_cookie == op->flow_cookie))) { |
2b07c8b1 BP |
5724 | /* Check that we can just cast from ofoperation_type to |
5725 | * nx_flow_update_event. */ | |
b277c7cc BP |
5726 | enum nx_flow_update_event event_type; |
5727 | ||
5728 | switch (op->type) { | |
5729 | case OFOPERATION_ADD: | |
5730 | case OFOPERATION_REPLACE: | |
5731 | event_type = NXFME_ADDED; | |
5732 | break; | |
5733 | ||
5734 | case OFOPERATION_DELETE: | |
5735 | event_type = NXFME_DELETED; | |
5736 | break; | |
5737 | ||
5738 | case OFOPERATION_MODIFY: | |
5739 | event_type = NXFME_MODIFIED; | |
5740 | break; | |
5741 | ||
5742 | default: | |
5743 | NOT_REACHED(); | |
5744 | } | |
5745 | ||
5746 | ofmonitor_report(ofproto->connmgr, rule, event_type, | |
2b07c8b1 BP |
5747 | op->reason, abbrev_ofconn, abbrev_xid); |
5748 | } | |
5749 | ||
e615b0a3 BP |
5750 | rule->pending = NULL; |
5751 | ||
5752 | switch (op->type) { | |
5753 | case OFOPERATION_ADD: | |
5754 | if (!op->error) { | |
5cb7a798 BP |
5755 | uint16_t vid_mask; |
5756 | ||
5cb7a798 BP |
5757 | vid_mask = minimask_get_vid_mask(&rule->cr.match.mask); |
5758 | if (vid_mask == VLAN_VID_MASK) { | |
e615b0a3 | 5759 | if (ofproto->vlan_bitmap) { |
5cb7a798 | 5760 | uint16_t vid = miniflow_get_vid(&rule->cr.match.flow); |
e615b0a3 BP |
5761 | if (!bitmap_is_set(ofproto->vlan_bitmap, vid)) { |
5762 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
5763 | ofproto->vlans_changed = true; | |
5764 | } | |
5765 | } else { | |
5766 | ofproto->vlans_changed = true; | |
5767 | } | |
5768 | } | |
5769 | } else { | |
c7c9a7c8 | 5770 | ovs_mutex_lock(&rule->mutex); |
b277c7cc | 5771 | oftable_remove_rule(rule); |
a2143702 | 5772 | ofproto_rule_unref(rule); |
e615b0a3 BP |
5773 | } |
5774 | break; | |
5775 | ||
5776 | case OFOPERATION_DELETE: | |
cb22974d | 5777 | ovs_assert(!op->error); |
a2143702 | 5778 | ofproto_rule_unref(rule); |
e615b0a3 BP |
5779 | op->rule = NULL; |
5780 | break; | |
5781 | ||
5782 | case OFOPERATION_MODIFY: | |
b277c7cc | 5783 | case OFOPERATION_REPLACE: |
e615b0a3 | 5784 | if (!op->error) { |
b277c7cc BP |
5785 | long long int now = time_msec(); |
5786 | ||
5787 | rule->modified = now; | |
5788 | if (op->type == OFOPERATION_REPLACE) { | |
5789 | rule->created = rule->used = now; | |
5790 | } | |
e615b0a3 | 5791 | } else { |
98eaac36 | 5792 | ofproto_rule_change_cookie(ofproto, rule, op->flow_cookie); |
d10976b7 | 5793 | ovs_mutex_lock(&rule->mutex); |
b277c7cc BP |
5794 | rule->idle_timeout = op->idle_timeout; |
5795 | rule->hard_timeout = op->hard_timeout; | |
d10976b7 | 5796 | ovs_mutex_unlock(&rule->mutex); |
6f00e29b BP |
5797 | if (op->actions) { |
5798 | struct rule_actions *old_actions; | |
884e1dc4 | 5799 | |
c7c9a7c8 | 5800 | ovs_mutex_lock(&rule->mutex); |
6f00e29b BP |
5801 | old_actions = rule->actions; |
5802 | rule->actions = op->actions; | |
c7c9a7c8 | 5803 | ovs_mutex_unlock(&rule->mutex); |
884e1dc4 | 5804 | |
6f00e29b BP |
5805 | op->actions = NULL; |
5806 | rule_actions_unref(old_actions); | |
08043761 | 5807 | } |
3f517bcd | 5808 | rule->flags = op->flags; |
e615b0a3 BP |
5809 | } |
5810 | break; | |
5811 | ||
5812 | default: | |
5813 | NOT_REACHED(); | |
5814 | } | |
5815 | ||
5816 | ofoperation_destroy(op); | |
5817 | } | |
5818 | ||
2b07c8b1 BP |
5819 | ofmonitor_flush(ofproto->connmgr); |
5820 | ||
7ee20df1 | 5821 | if (!list_is_empty(&group->ofproto_node)) { |
cb22974d | 5822 | ovs_assert(ofproto->n_pending > 0); |
e615b0a3 | 5823 | ofproto->n_pending--; |
7ee20df1 BP |
5824 | list_remove(&group->ofproto_node); |
5825 | } | |
5826 | if (!list_is_empty(&group->ofconn_node)) { | |
5827 | list_remove(&group->ofconn_node); | |
e615b0a3 BP |
5828 | if (error) { |
5829 | ofconn_send_error(group->ofconn, group->request, error); | |
7ee20df1 | 5830 | } |
e615b0a3 | 5831 | connmgr_retry(ofproto->connmgr); |
7ee20df1 BP |
5832 | } |
5833 | free(group->request); | |
5834 | free(group); | |
5835 | } | |
5836 | ||
5837 | /* Initiates a new operation on 'rule', of the specified 'type', within | |
a7d94793 BP |
5838 | * 'group'. Prior to calling, 'rule' must not have any pending operation. |
5839 | * | |
2b07c8b1 BP |
5840 | * For a 'type' of OFOPERATION_DELETE, 'reason' should specify the reason that |
5841 | * the flow is being deleted. For other 'type's, 'reason' is ignored (use 0). | |
5842 | * | |
a7d94793 BP |
5843 | * Returns the newly created ofoperation (which is also available as |
5844 | * rule->pending). */ | |
5845 | static struct ofoperation * | |
7ee20df1 | 5846 | ofoperation_create(struct ofopgroup *group, struct rule *rule, |
2b07c8b1 BP |
5847 | enum ofoperation_type type, |
5848 | enum ofp_flow_removed_reason reason) | |
7ee20df1 | 5849 | { |
a5b8d268 | 5850 | struct ofproto *ofproto = group->ofproto; |
7ee20df1 BP |
5851 | struct ofoperation *op; |
5852 | ||
cb22974d | 5853 | ovs_assert(!rule->pending); |
7ee20df1 BP |
5854 | |
5855 | op = rule->pending = xzalloc(sizeof *op); | |
5856 | op->group = group; | |
5857 | list_push_back(&group->ops, &op->group_node); | |
5858 | op->rule = rule; | |
5859 | op->type = type; | |
2b07c8b1 | 5860 | op->reason = reason; |
7ee20df1 | 5861 | op->flow_cookie = rule->flow_cookie; |
d10976b7 | 5862 | ovs_mutex_lock(&rule->mutex); |
b277c7cc BP |
5863 | op->idle_timeout = rule->idle_timeout; |
5864 | op->hard_timeout = rule->hard_timeout; | |
d10976b7 | 5865 | ovs_mutex_unlock(&rule->mutex); |
3f517bcd | 5866 | op->flags = rule->flags; |
7ee20df1 | 5867 | |
e615b0a3 BP |
5868 | group->n_running++; |
5869 | ||
7ee20df1 | 5870 | if (type == OFOPERATION_DELETE) { |
a5b8d268 | 5871 | hmap_insert(&ofproto->deletions, &op->hmap_node, |
7ee20df1 BP |
5872 | cls_rule_hash(&rule->cr, rule->table_id)); |
5873 | } | |
a7d94793 BP |
5874 | |
5875 | return op; | |
7ee20df1 BP |
5876 | } |
5877 | ||
5878 | static void | |
5879 | ofoperation_destroy(struct ofoperation *op) | |
5880 | { | |
5881 | struct ofopgroup *group = op->group; | |
5882 | ||
5883 | if (op->rule) { | |
5884 | op->rule->pending = NULL; | |
5885 | } | |
5886 | if (op->type == OFOPERATION_DELETE) { | |
5887 | hmap_remove(&group->ofproto->deletions, &op->hmap_node); | |
5888 | } | |
5889 | list_remove(&op->group_node); | |
6f00e29b | 5890 | rule_actions_unref(op->actions); |
7ee20df1 | 5891 | free(op); |
7ee20df1 BP |
5892 | } |
5893 | ||
5894 | /* Indicates that 'op' completed with status 'error', which is either 0 to | |
90bf1e07 | 5895 | * indicate success or an OpenFlow error code on failure. |
7ee20df1 | 5896 | * |
a6a62132 | 5897 | * If 'error' is 0, indicating success, the operation will be committed |
b277c7cc | 5898 | * permanently to the flow table. |
a6a62132 BP |
5899 | * |
5900 | * If 'error' is nonzero, then generally the operation will be rolled back: | |
5901 | * | |
5902 | * - If 'op' is an "add flow" operation, ofproto removes the new rule or | |
5903 | * restores the original rule. The caller must have uninitialized any | |
5904 | * derived state in the new rule, as in step 5 of in the "Life Cycle" in | |
5905 | * ofproto/ofproto-provider.h. ofoperation_complete() performs steps 6 and | |
5906 | * and 7 for the new rule, calling its ->rule_dealloc() function. | |
5907 | * | |
5908 | * - If 'op' is a "modify flow" operation, ofproto restores the original | |
5909 | * actions. | |
5910 | * | |
5911 | * - 'op' must not be a "delete flow" operation. Removing a rule is not | |
5912 | * allowed to fail. It must always succeed. | |
7ee20df1 | 5913 | * |
5bee6e26 JP |
5914 | * Please see the large comment in ofproto/ofproto-provider.h titled |
5915 | * "Asynchronous Operation Support" for more information. */ | |
7ee20df1 | 5916 | void |
90bf1e07 | 5917 | ofoperation_complete(struct ofoperation *op, enum ofperr error) |
7ee20df1 BP |
5918 | { |
5919 | struct ofopgroup *group = op->group; | |
7ee20df1 | 5920 | |
cb22974d BP |
5921 | ovs_assert(op->rule->pending == op); |
5922 | ovs_assert(group->n_running > 0); | |
5923 | ovs_assert(!error || op->type != OFOPERATION_DELETE); | |
9075907c | 5924 | |
e615b0a3 BP |
5925 | op->error = error; |
5926 | if (!--group->n_running && !list_is_empty(&group->ofproto_node)) { | |
5927 | ofopgroup_complete(group); | |
7ee20df1 | 5928 | } |
7ee20df1 | 5929 | } |
064af421 | 5930 | \f |
064af421 | 5931 | static uint64_t |
fa60c019 | 5932 | pick_datapath_id(const struct ofproto *ofproto) |
064af421 | 5933 | { |
fa60c019 | 5934 | const struct ofport *port; |
064af421 | 5935 | |
abe529af | 5936 | port = ofproto_get_port(ofproto, OFPP_LOCAL); |
fa60c019 BP |
5937 | if (port) { |
5938 | uint8_t ea[ETH_ADDR_LEN]; | |
5939 | int error; | |
5940 | ||
5941 | error = netdev_get_etheraddr(port->netdev, ea); | |
064af421 BP |
5942 | if (!error) { |
5943 | return eth_addr_to_uint64(ea); | |
5944 | } | |
fbfa2911 BP |
5945 | VLOG_WARN("%s: could not get MAC address for %s (%s)", |
5946 | ofproto->name, netdev_get_name(port->netdev), | |
10a89ef0 | 5947 | ovs_strerror(error)); |
064af421 | 5948 | } |
fa60c019 | 5949 | return ofproto->fallback_dpid; |
064af421 BP |
5950 | } |
5951 | ||
5952 | static uint64_t | |
5953 | pick_fallback_dpid(void) | |
5954 | { | |
5955 | uint8_t ea[ETH_ADDR_LEN]; | |
70150daf | 5956 | eth_addr_nicira_random(ea); |
064af421 BP |
5957 | return eth_addr_to_uint64(ea); |
5958 | } | |
5959 | \f | |
254750ce BP |
5960 | /* Table overflow policy. */ |
5961 | ||
ad3efdcb EJ |
5962 | /* Chooses and updates 'rulep' with a rule to evict from 'table'. Sets 'rulep' |
5963 | * to NULL if the table is not configured to evict rules or if the table | |
5964 | * contains no evictable rules. (Rules with a readlock on their evict rwlock, | |
5965 | * or with no timeouts are not evictable.) */ | |
5966 | static bool | |
5967 | choose_rule_to_evict(struct oftable *table, struct rule **rulep) | |
254750ce BP |
5968 | { |
5969 | struct eviction_group *evg; | |
5970 | ||
ad3efdcb | 5971 | *rulep = NULL; |
254750ce | 5972 | if (!table->eviction_fields) { |
ad3efdcb | 5973 | return false; |
254750ce BP |
5974 | } |
5975 | ||
5976 | /* In the common case, the outer and inner loops here will each be entered | |
5977 | * exactly once: | |
5978 | * | |
5979 | * - The inner loop normally "return"s in its first iteration. If the | |
5980 | * eviction group has any evictable rules, then it always returns in | |
5981 | * some iteration. | |
5982 | * | |
5983 | * - The outer loop only iterates more than once if the largest eviction | |
5984 | * group has no evictable rules. | |
5985 | * | |
5986 | * - The outer loop can exit only if table's 'max_flows' is all filled up | |
afe2143d | 5987 | * by unevictable rules. */ |
254750ce BP |
5988 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { |
5989 | struct rule *rule; | |
5990 | ||
5991 | HEAP_FOR_EACH (rule, evg_node, &evg->rules) { | |
c7c9a7c8 | 5992 | if (!ovs_mutex_trylock(&rule->mutex)) { |
ad3efdcb EJ |
5993 | *rulep = rule; |
5994 | return true; | |
254750ce BP |
5995 | } |
5996 | } | |
5997 | } | |
5998 | ||
ad3efdcb | 5999 | return false; |
254750ce BP |
6000 | } |
6001 | ||
6002 | /* Searches 'ofproto' for tables that have more flows than their configured | |
6003 | * maximum and that have flow eviction enabled, and evicts as many flows as | |
6004 | * necessary and currently feasible from them. | |
6005 | * | |
6006 | * This triggers only when an OpenFlow table has N flows in it and then the | |
6007 | * client configures a maximum number of flows less than N. */ | |
6008 | static void | |
6009 | ofproto_evict(struct ofproto *ofproto) | |
6010 | { | |
6011 | struct ofopgroup *group; | |
6012 | struct oftable *table; | |
6013 | ||
6014 | group = ofopgroup_create_unattached(ofproto); | |
6015 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
0b4f2078 | 6016 | while (table->eviction_fields) { |
254750ce | 6017 | struct rule *rule; |
0b4f2078 EJ |
6018 | size_t n_rules; |
6019 | ||
6020 | ovs_rwlock_rdlock(&table->cls.rwlock); | |
6021 | n_rules = classifier_count(&table->cls); | |
6022 | ovs_rwlock_unlock(&table->cls.rwlock); | |
6023 | ||
6024 | if (n_rules <= table->max_flows) { | |
6025 | break; | |
6026 | } | |
254750ce | 6027 | |
ad3efdcb EJ |
6028 | if (!choose_rule_to_evict(table, &rule)) { |
6029 | break; | |
6030 | } | |
6031 | ||
6032 | if (rule->pending) { | |
c7c9a7c8 | 6033 | ovs_mutex_unlock(&rule->mutex); |
254750ce BP |
6034 | break; |
6035 | } | |
6036 | ||
2b07c8b1 BP |
6037 | ofoperation_create(group, rule, |
6038 | OFOPERATION_DELETE, OFPRR_EVICTION); | |
254750ce | 6039 | oftable_remove_rule(rule); |
8037acb4 | 6040 | ofproto->ofproto_class->rule_delete(rule); |
254750ce BP |
6041 | } |
6042 | } | |
6043 | ofopgroup_submit(group); | |
6044 | } | |
6045 | \f | |
6046 | /* Eviction groups. */ | |
6047 | ||
6048 | /* Returns the priority to use for an eviction_group that contains 'n_rules' | |
6049 | * rules. The priority contains low-order random bits to ensure that eviction | |
6050 | * groups with the same number of rules are prioritized randomly. */ | |
6051 | static uint32_t | |
6052 | eviction_group_priority(size_t n_rules) | |
6053 | { | |
6054 | uint16_t size = MIN(UINT16_MAX, n_rules); | |
6055 | return (size << 16) | random_uint16(); | |
6056 | } | |
6057 | ||
6058 | /* Updates 'evg', an eviction_group within 'table', following a change that | |
6059 | * adds or removes rules in 'evg'. */ | |
6060 | static void | |
6061 | eviction_group_resized(struct oftable *table, struct eviction_group *evg) | |
6062 | { | |
6063 | heap_change(&table->eviction_groups_by_size, &evg->size_node, | |
6064 | eviction_group_priority(heap_count(&evg->rules))); | |
6065 | } | |
6066 | ||
6067 | /* Destroys 'evg', an eviction_group within 'table': | |
6068 | * | |
6069 | * - Removes all the rules, if any, from 'evg'. (It doesn't destroy the | |
6070 | * rules themselves, just removes them from the eviction group.) | |
6071 | * | |
6072 | * - Removes 'evg' from 'table'. | |
6073 | * | |
6074 | * - Frees 'evg'. */ | |
6075 | static void | |
6076 | eviction_group_destroy(struct oftable *table, struct eviction_group *evg) | |
6077 | { | |
6078 | while (!heap_is_empty(&evg->rules)) { | |
6079 | struct rule *rule; | |
6080 | ||
6081 | rule = CONTAINER_OF(heap_pop(&evg->rules), struct rule, evg_node); | |
6082 | rule->eviction_group = NULL; | |
6083 | } | |
6084 | hmap_remove(&table->eviction_groups_by_id, &evg->id_node); | |
6085 | heap_remove(&table->eviction_groups_by_size, &evg->size_node); | |
6086 | heap_destroy(&evg->rules); | |
6087 | free(evg); | |
6088 | } | |
6089 | ||
6090 | /* Removes 'rule' from its eviction group, if any. */ | |
6091 | static void | |
6092 | eviction_group_remove_rule(struct rule *rule) | |
6093 | { | |
6094 | if (rule->eviction_group) { | |
6095 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
6096 | struct eviction_group *evg = rule->eviction_group; | |
6097 | ||
6098 | rule->eviction_group = NULL; | |
6099 | heap_remove(&evg->rules, &rule->evg_node); | |
6100 | if (heap_is_empty(&evg->rules)) { | |
6101 | eviction_group_destroy(table, evg); | |
6102 | } else { | |
6103 | eviction_group_resized(table, evg); | |
6104 | } | |
6105 | } | |
6106 | } | |
6107 | ||
6108 | /* Hashes the 'rule''s values for the eviction_fields of 'rule''s table, and | |
6109 | * returns the hash value. */ | |
6110 | static uint32_t | |
6111 | eviction_group_hash_rule(struct rule *rule) | |
6112 | { | |
6113 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
6114 | const struct mf_subfield *sf; | |
5cb7a798 | 6115 | struct flow flow; |
254750ce BP |
6116 | uint32_t hash; |
6117 | ||
6118 | hash = table->eviction_group_id_basis; | |
5cb7a798 | 6119 | miniflow_expand(&rule->cr.match.flow, &flow); |
254750ce BP |
6120 | for (sf = table->eviction_fields; |
6121 | sf < &table->eviction_fields[table->n_eviction_fields]; | |
6122 | sf++) | |
6123 | { | |
5cb7a798 | 6124 | if (mf_are_prereqs_ok(sf->field, &flow)) { |
254750ce BP |
6125 | union mf_value value; |
6126 | ||
5cb7a798 | 6127 | mf_get_value(sf->field, &flow, &value); |
254750ce BP |
6128 | if (sf->ofs) { |
6129 | bitwise_zero(&value, sf->field->n_bytes, 0, sf->ofs); | |
6130 | } | |
6131 | if (sf->ofs + sf->n_bits < sf->field->n_bytes * 8) { | |
6132 | unsigned int start = sf->ofs + sf->n_bits; | |
6133 | bitwise_zero(&value, sf->field->n_bytes, start, | |
6134 | sf->field->n_bytes * 8 - start); | |
6135 | } | |
6136 | hash = hash_bytes(&value, sf->field->n_bytes, hash); | |
6137 | } else { | |
6138 | hash = hash_int(hash, 0); | |
6139 | } | |
6140 | } | |
6141 | ||
6142 | return hash; | |
6143 | } | |
6144 | ||
6145 | /* Returns an eviction group within 'table' with the given 'id', creating one | |
6146 | * if necessary. */ | |
6147 | static struct eviction_group * | |
6148 | eviction_group_find(struct oftable *table, uint32_t id) | |
6149 | { | |
6150 | struct eviction_group *evg; | |
6151 | ||
6152 | HMAP_FOR_EACH_WITH_HASH (evg, id_node, id, &table->eviction_groups_by_id) { | |
6153 | return evg; | |
6154 | } | |
6155 | ||
6156 | evg = xmalloc(sizeof *evg); | |
6157 | hmap_insert(&table->eviction_groups_by_id, &evg->id_node, id); | |
6158 | heap_insert(&table->eviction_groups_by_size, &evg->size_node, | |
6159 | eviction_group_priority(0)); | |
6160 | heap_init(&evg->rules); | |
6161 | ||
6162 | return evg; | |
6163 | } | |
6164 | ||
6165 | /* Returns an eviction priority for 'rule'. The return value should be | |
6166 | * interpreted so that higher priorities make a rule more attractive candidates | |
6167 | * for eviction. */ | |
6168 | static uint32_t | |
6169 | rule_eviction_priority(struct rule *rule) | |
6170 | { | |
6171 | long long int hard_expiration; | |
6172 | long long int idle_expiration; | |
6173 | long long int expiration; | |
6174 | uint32_t expiration_offset; | |
6175 | ||
6176 | /* Calculate time of expiration. */ | |
d10976b7 | 6177 | ovs_mutex_lock(&rule->mutex); |
254750ce BP |
6178 | hard_expiration = (rule->hard_timeout |
6179 | ? rule->modified + rule->hard_timeout * 1000 | |
6180 | : LLONG_MAX); | |
6181 | idle_expiration = (rule->idle_timeout | |
6182 | ? rule->used + rule->idle_timeout * 1000 | |
6183 | : LLONG_MAX); | |
6184 | expiration = MIN(hard_expiration, idle_expiration); | |
d10976b7 | 6185 | ovs_mutex_unlock(&rule->mutex); |
254750ce BP |
6186 | if (expiration == LLONG_MAX) { |
6187 | return 0; | |
6188 | } | |
6189 | ||
6190 | /* Calculate the time of expiration as a number of (approximate) seconds | |
6191 | * after program startup. | |
6192 | * | |
6193 | * This should work OK for program runs that last UINT32_MAX seconds or | |
6194 | * less. Therefore, please restart OVS at least once every 136 years. */ | |
6195 | expiration_offset = (expiration >> 10) - (time_boot_msec() >> 10); | |
6196 | ||
6197 | /* Invert the expiration offset because we're using a max-heap. */ | |
6198 | return UINT32_MAX - expiration_offset; | |
6199 | } | |
6200 | ||
6201 | /* Adds 'rule' to an appropriate eviction group for its oftable's | |
6202 | * configuration. Does nothing if 'rule''s oftable doesn't have eviction | |
6203 | * enabled, or if 'rule' is a permanent rule (one that will never expire on its | |
6204 | * own). | |
6205 | * | |
6206 | * The caller must ensure that 'rule' is not already in an eviction group. */ | |
6207 | static void | |
6208 | eviction_group_add_rule(struct rule *rule) | |
6209 | { | |
6210 | struct ofproto *ofproto = rule->ofproto; | |
6211 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
a3779dbc | 6212 | bool has_timeout; |
254750ce | 6213 | |
d10976b7 | 6214 | ovs_mutex_lock(&rule->mutex); |
a3779dbc | 6215 | has_timeout = rule->hard_timeout || rule->idle_timeout; |
d10976b7 | 6216 | ovs_mutex_unlock(&rule->mutex); |
a3779dbc EJ |
6217 | |
6218 | if (table->eviction_fields && has_timeout) { | |
254750ce BP |
6219 | struct eviction_group *evg; |
6220 | ||
6221 | evg = eviction_group_find(table, eviction_group_hash_rule(rule)); | |
6222 | ||
6223 | rule->eviction_group = evg; | |
6224 | heap_insert(&evg->rules, &rule->evg_node, | |
6225 | rule_eviction_priority(rule)); | |
6226 | eviction_group_resized(table, evg); | |
6227 | } | |
6228 | } | |
6229 | \f | |
d0918789 BP |
6230 | /* oftables. */ |
6231 | ||
6232 | /* Initializes 'table'. */ | |
6233 | static void | |
6234 | oftable_init(struct oftable *table) | |
6235 | { | |
5c67e4af | 6236 | memset(table, 0, sizeof *table); |
d0918789 | 6237 | classifier_init(&table->cls); |
ec1c5c7e | 6238 | table->max_flows = UINT_MAX; |
d0918789 BP |
6239 | } |
6240 | ||
254750ce | 6241 | /* Destroys 'table', including its classifier and eviction groups. |
d0918789 BP |
6242 | * |
6243 | * The caller is responsible for freeing 'table' itself. */ | |
6244 | static void | |
6245 | oftable_destroy(struct oftable *table) | |
6246 | { | |
0b4f2078 | 6247 | ovs_rwlock_rdlock(&table->cls.rwlock); |
cb22974d | 6248 | ovs_assert(classifier_is_empty(&table->cls)); |
0b4f2078 | 6249 | ovs_rwlock_unlock(&table->cls.rwlock); |
254750ce | 6250 | oftable_disable_eviction(table); |
d0918789 | 6251 | classifier_destroy(&table->cls); |
254750ce BP |
6252 | free(table->name); |
6253 | } | |
6254 | ||
6255 | /* Changes the name of 'table' to 'name'. If 'name' is NULL or the empty | |
6256 | * string, then 'table' will use its default name. | |
6257 | * | |
6258 | * This only affects the name exposed for a table exposed through the OpenFlow | |
6259 | * OFPST_TABLE (as printed by "ovs-ofctl dump-tables"). */ | |
6260 | static void | |
6261 | oftable_set_name(struct oftable *table, const char *name) | |
6262 | { | |
6263 | if (name && name[0]) { | |
6264 | int len = strnlen(name, OFP_MAX_TABLE_NAME_LEN); | |
6265 | if (!table->name || strncmp(name, table->name, len)) { | |
6266 | free(table->name); | |
6267 | table->name = xmemdup0(name, len); | |
6268 | } | |
6269 | } else { | |
6270 | free(table->name); | |
6271 | table->name = NULL; | |
6272 | } | |
6273 | } | |
6274 | ||
6275 | /* oftables support a choice of two policies when adding a rule would cause the | |
6276 | * number of flows in the table to exceed the configured maximum number: either | |
6277 | * they can refuse to add the new flow or they can evict some existing flow. | |
6278 | * This function configures the former policy on 'table'. */ | |
6279 | static void | |
6280 | oftable_disable_eviction(struct oftable *table) | |
6281 | { | |
6282 | if (table->eviction_fields) { | |
6283 | struct eviction_group *evg, *next; | |
6284 | ||
6285 | HMAP_FOR_EACH_SAFE (evg, next, id_node, | |
6286 | &table->eviction_groups_by_id) { | |
6287 | eviction_group_destroy(table, evg); | |
6288 | } | |
6289 | hmap_destroy(&table->eviction_groups_by_id); | |
6290 | heap_destroy(&table->eviction_groups_by_size); | |
6291 | ||
6292 | free(table->eviction_fields); | |
6293 | table->eviction_fields = NULL; | |
6294 | table->n_eviction_fields = 0; | |
6295 | } | |
6296 | } | |
6297 | ||
6298 | /* oftables support a choice of two policies when adding a rule would cause the | |
6299 | * number of flows in the table to exceed the configured maximum number: either | |
6300 | * they can refuse to add the new flow or they can evict some existing flow. | |
6301 | * This function configures the latter policy on 'table', with fairness based | |
6302 | * on the values of the 'n_fields' fields specified in 'fields'. (Specifying | |
6303 | * 'n_fields' as 0 disables fairness.) */ | |
6304 | static void | |
6305 | oftable_enable_eviction(struct oftable *table, | |
6306 | const struct mf_subfield *fields, size_t n_fields) | |
6307 | { | |
6308 | struct cls_cursor cursor; | |
6309 | struct rule *rule; | |
6310 | ||
6311 | if (table->eviction_fields | |
6312 | && n_fields == table->n_eviction_fields | |
6313 | && (!n_fields | |
6314 | || !memcmp(fields, table->eviction_fields, | |
6315 | n_fields * sizeof *fields))) { | |
6316 | /* No change. */ | |
6317 | return; | |
6318 | } | |
6319 | ||
6320 | oftable_disable_eviction(table); | |
6321 | ||
6322 | table->n_eviction_fields = n_fields; | |
6323 | table->eviction_fields = xmemdup(fields, n_fields * sizeof *fields); | |
6324 | ||
6325 | table->eviction_group_id_basis = random_uint32(); | |
6326 | hmap_init(&table->eviction_groups_by_id); | |
6327 | heap_init(&table->eviction_groups_by_size); | |
6328 | ||
0b4f2078 | 6329 | ovs_rwlock_rdlock(&table->cls.rwlock); |
254750ce BP |
6330 | cls_cursor_init(&cursor, &table->cls, NULL); |
6331 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { | |
6332 | eviction_group_add_rule(rule); | |
6333 | } | |
0b4f2078 | 6334 | ovs_rwlock_unlock(&table->cls.rwlock); |
d0918789 BP |
6335 | } |
6336 | ||
6337 | /* Removes 'rule' from the oftable that contains it. */ | |
6338 | static void | |
0b4f2078 | 6339 | oftable_remove_rule__(struct ofproto *ofproto, struct classifier *cls, |
47b52c71 | 6340 | struct rule *rule) |
c7c9a7c8 | 6341 | OVS_REQ_WRLOCK(cls->rwlock) OVS_RELEASES(rule->mutex) |
d0918789 | 6342 | { |
49a0e0eb | 6343 | classifier_remove(cls, CONST_CAST(struct cls_rule *, &rule->cr)); |
2c916028 BP |
6344 | |
6345 | ovs_mutex_lock(&ofproto_mutex); | |
98eaac36 | 6346 | cookies_remove(ofproto, rule); |
2c916028 BP |
6347 | ovs_mutex_unlock(&ofproto_mutex); |
6348 | ||
254750ce | 6349 | eviction_group_remove_rule(rule); |
abe7b10f | 6350 | ovs_mutex_lock(&ofproto_mutex); |
e503cc19 SH |
6351 | if (!list_is_empty(&rule->expirable)) { |
6352 | list_remove(&rule->expirable); | |
6353 | } | |
abe7b10f | 6354 | ovs_mutex_unlock(&ofproto_mutex); |
9cae45dc JR |
6355 | if (!list_is_empty(&rule->meter_list_node)) { |
6356 | list_remove(&rule->meter_list_node); | |
51b50dfd | 6357 | list_init(&rule->meter_list_node); |
9cae45dc | 6358 | } |
c7c9a7c8 | 6359 | ovs_mutex_unlock(&rule->mutex); |
d0918789 BP |
6360 | } |
6361 | ||
0b4f2078 EJ |
6362 | static void |
6363 | oftable_remove_rule(struct rule *rule) | |
6364 | { | |
6365 | struct ofproto *ofproto = rule->ofproto; | |
6366 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
6367 | ||
6368 | ovs_rwlock_wrlock(&table->cls.rwlock); | |
6369 | oftable_remove_rule__(ofproto, &table->cls, rule); | |
6370 | ovs_rwlock_unlock(&table->cls.rwlock); | |
6371 | } | |
6372 | ||
b277c7cc BP |
6373 | /* Inserts 'rule' into its oftable, which must not already contain any rule for |
6374 | * the same cls_rule. */ | |
6375 | static void | |
6376 | oftable_insert_rule(struct rule *rule) | |
d0918789 BP |
6377 | { |
6378 | struct ofproto *ofproto = rule->ofproto; | |
6379 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
a3779dbc EJ |
6380 | bool may_expire; |
6381 | ||
d10976b7 | 6382 | ovs_mutex_lock(&rule->mutex); |
a3779dbc | 6383 | may_expire = rule->hard_timeout || rule->idle_timeout; |
d10976b7 | 6384 | ovs_mutex_unlock(&rule->mutex); |
e503cc19 SH |
6385 | |
6386 | if (may_expire) { | |
abe7b10f | 6387 | ovs_mutex_lock(&ofproto_mutex); |
e503cc19 | 6388 | list_insert(&ofproto->expirable, &rule->expirable); |
abe7b10f | 6389 | ovs_mutex_unlock(&ofproto_mutex); |
e503cc19 | 6390 | } |
2c916028 BP |
6391 | |
6392 | ovs_mutex_lock(&ofproto_mutex); | |
98eaac36 | 6393 | cookies_insert(ofproto, rule); |
2c916028 | 6394 | ovs_mutex_unlock(&ofproto_mutex); |
6f00e29b BP |
6395 | |
6396 | if (rule->actions->meter_id) { | |
6397 | struct meter *meter = ofproto->meters[rule->actions->meter_id]; | |
9cae45dc JR |
6398 | list_insert(&meter->rules, &rule->meter_list_node); |
6399 | } | |
0b4f2078 | 6400 | ovs_rwlock_wrlock(&table->cls.rwlock); |
49a0e0eb | 6401 | classifier_insert(&table->cls, CONST_CAST(struct cls_rule *, &rule->cr)); |
0b4f2078 | 6402 | ovs_rwlock_unlock(&table->cls.rwlock); |
254750ce | 6403 | eviction_group_add_rule(rule); |
d0918789 BP |
6404 | } |
6405 | \f | |
abe529af | 6406 | /* unixctl commands. */ |
7aa697dd | 6407 | |
abe529af | 6408 | struct ofproto * |
2ac6bedd | 6409 | ofproto_lookup(const char *name) |
7aa697dd | 6410 | { |
2ac6bedd | 6411 | struct ofproto *ofproto; |
7aa697dd | 6412 | |
2ac6bedd BP |
6413 | HMAP_FOR_EACH_WITH_HASH (ofproto, hmap_node, hash_string(name, 0), |
6414 | &all_ofprotos) { | |
6415 | if (!strcmp(ofproto->name, name)) { | |
6416 | return ofproto; | |
6417 | } | |
7aa697dd | 6418 | } |
2ac6bedd | 6419 | return NULL; |
7aa697dd BP |
6420 | } |
6421 | ||
6422 | static void | |
0e15264f BP |
6423 | ofproto_unixctl_list(struct unixctl_conn *conn, int argc OVS_UNUSED, |
6424 | const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED) | |
7aa697dd | 6425 | { |
7aa697dd | 6426 | struct ofproto *ofproto; |
7aa697dd | 6427 | struct ds results; |
7aa697dd | 6428 | |
7aa697dd | 6429 | ds_init(&results); |
2ac6bedd BP |
6430 | HMAP_FOR_EACH (ofproto, hmap_node, &all_ofprotos) { |
6431 | ds_put_format(&results, "%s\n", ofproto->name); | |
7aa697dd | 6432 | } |
bde9f75d | 6433 | unixctl_command_reply(conn, ds_cstr(&results)); |
7aa697dd | 6434 | ds_destroy(&results); |
7aa697dd BP |
6435 | } |
6436 | ||
6437 | static void | |
6438 | ofproto_unixctl_init(void) | |
6439 | { | |
6440 | static bool registered; | |
6441 | if (registered) { | |
6442 | return; | |
6443 | } | |
6444 | registered = true; | |
6445 | ||
0e15264f BP |
6446 | unixctl_command_register("ofproto/list", "", 0, 0, |
6447 | ofproto_unixctl_list, NULL); | |
064af421 | 6448 | } |
52a90c29 BP |
6449 | \f |
6450 | /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.) | |
6451 | * | |
6452 | * This is deprecated. It is only for compatibility with broken device drivers | |
6453 | * in old versions of Linux that do not properly support VLANs when VLAN | |
6454 | * devices are not used. When broken device drivers are no longer in | |
6455 | * widespread use, we will delete these interfaces. */ | |
6456 | ||
6457 | /* Sets a 1-bit in the 4096-bit 'vlan_bitmap' for each VLAN ID that is matched | |
6458 | * (exactly) by an OpenFlow rule in 'ofproto'. */ | |
6459 | void | |
6460 | ofproto_get_vlan_usage(struct ofproto *ofproto, unsigned long int *vlan_bitmap) | |
6461 | { | |
d0918789 | 6462 | const struct oftable *oftable; |
52a90c29 BP |
6463 | |
6464 | free(ofproto->vlan_bitmap); | |
6465 | ofproto->vlan_bitmap = bitmap_allocate(4096); | |
6466 | ofproto->vlans_changed = false; | |
6467 | ||
d0918789 | 6468 | OFPROTO_FOR_EACH_TABLE (oftable, ofproto) { |
52a90c29 BP |
6469 | const struct cls_table *table; |
6470 | ||
d0918789 | 6471 | HMAP_FOR_EACH (table, hmap_node, &oftable->cls.tables) { |
5cb7a798 | 6472 | if (minimask_get_vid_mask(&table->mask) == VLAN_VID_MASK) { |
52a90c29 BP |
6473 | const struct cls_rule *rule; |
6474 | ||
6475 | HMAP_FOR_EACH (rule, hmap_node, &table->rules) { | |
5cb7a798 | 6476 | uint16_t vid = miniflow_get_vid(&rule->match.flow); |
52a90c29 BP |
6477 | bitmap_set1(vlan_bitmap, vid); |
6478 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
6479 | } | |
6480 | } | |
6481 | } | |
6482 | } | |
6483 | } | |
6484 | ||
6485 | /* Returns true if new VLANs have come into use by the flow table since the | |
6486 | * last call to ofproto_get_vlan_usage(). | |
6487 | * | |
6488 | * We don't track when old VLANs stop being used. */ | |
6489 | bool | |
6490 | ofproto_has_vlan_usage_changed(const struct ofproto *ofproto) | |
6491 | { | |
6492 | return ofproto->vlans_changed; | |
6493 | } | |
6494 | ||
6495 | /* Configures a VLAN splinter binding between the ports identified by OpenFlow | |
6496 | * port numbers 'vlandev_ofp_port' and 'realdev_ofp_port'. If | |
6497 | * 'realdev_ofp_port' is nonzero, then the VLAN device is enslaved to the real | |
6498 | * device as a VLAN splinter for VLAN ID 'vid'. If 'realdev_ofp_port' is zero, | |
6499 | * then the VLAN device is un-enslaved. */ | |
6500 | int | |
4e022ec0 AW |
6501 | ofproto_port_set_realdev(struct ofproto *ofproto, ofp_port_t vlandev_ofp_port, |
6502 | ofp_port_t realdev_ofp_port, int vid) | |
52a90c29 BP |
6503 | { |
6504 | struct ofport *ofport; | |
6505 | int error; | |
6506 | ||
cb22974d | 6507 | ovs_assert(vlandev_ofp_port != realdev_ofp_port); |
52a90c29 BP |
6508 | |
6509 | ofport = ofproto_get_port(ofproto, vlandev_ofp_port); | |
6510 | if (!ofport) { | |
6511 | VLOG_WARN("%s: cannot set realdev on nonexistent port %"PRIu16, | |
6512 | ofproto->name, vlandev_ofp_port); | |
6513 | return EINVAL; | |
6514 | } | |
6515 | ||
6516 | if (!ofproto->ofproto_class->set_realdev) { | |
6517 | if (!vlandev_ofp_port) { | |
6518 | return 0; | |
6519 | } | |
6520 | VLOG_WARN("%s: vlan splinters not supported", ofproto->name); | |
6521 | return EOPNOTSUPP; | |
6522 | } | |
6523 | ||
6524 | error = ofproto->ofproto_class->set_realdev(ofport, realdev_ofp_port, vid); | |
6525 | if (error) { | |
6526 | VLOG_WARN("%s: setting realdev on port %"PRIu16" (%s) failed (%s)", | |
6527 | ofproto->name, vlandev_ofp_port, | |
10a89ef0 | 6528 | netdev_get_name(ofport->netdev), ovs_strerror(error)); |
52a90c29 BP |
6529 | } |
6530 | return error; | |
6531 | } |