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064af421 | 1 | /* |
c5f81b20 | 2 | * Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014 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" |
da4a6191 | 28 | #include "connectivity.h" |
19a87e36 | 29 | #include "connmgr.h" |
064af421 | 30 | #include "coverage.h" |
4f2cad2c | 31 | #include "dynamic-string.h" |
ca0f572c BP |
32 | #include "hash.h" |
33 | #include "hmap.h" | |
254750ce | 34 | #include "meta-flow.h" |
064af421 | 35 | #include "netdev.h" |
09246b99 | 36 | #include "nx-match.h" |
f25d0cf3 | 37 | #include "ofp-actions.h" |
90bf1e07 | 38 | #include "ofp-errors.h" |
982697a4 | 39 | #include "ofp-msgs.h" |
064af421 | 40 | #include "ofp-print.h" |
fa37b408 | 41 | #include "ofp-util.h" |
064af421 | 42 | #include "ofpbuf.h" |
5bee6e26 | 43 | #include "ofproto-provider.h" |
064af421 BP |
44 | #include "openflow/nicira-ext.h" |
45 | #include "openflow/openflow.h" | |
06a0f3e2 | 46 | #include "ovs-rcu.h" |
064af421 BP |
47 | #include "packets.h" |
48 | #include "pinsched.h" | |
49 | #include "pktbuf.h" | |
50 | #include "poll-loop.h" | |
254750ce | 51 | #include "random.h" |
da4a6191 | 52 | #include "seq.h" |
064af421 | 53 | #include "shash.h" |
0d085684 | 54 | #include "simap.h" |
e8f9a7bb | 55 | #include "smap.h" |
b3c01ed3 | 56 | #include "sset.h" |
064af421 | 57 | #include "timeval.h" |
c4617b3c | 58 | #include "unaligned.h" |
4f2cad2c | 59 | #include "unixctl.h" |
5136ce49 | 60 | #include "vlog.h" |
777af88d | 61 | #include "bundles.h" |
064af421 | 62 | |
d98e6007 | 63 | VLOG_DEFINE_THIS_MODULE(ofproto); |
064af421 | 64 | |
d76f09ea | 65 | COVERAGE_DEFINE(ofproto_flush); |
d76f09ea BP |
66 | COVERAGE_DEFINE(ofproto_packet_out); |
67 | COVERAGE_DEFINE(ofproto_queue_req); | |
68 | COVERAGE_DEFINE(ofproto_recv_openflow); | |
69 | COVERAGE_DEFINE(ofproto_reinit_ports); | |
d76f09ea BP |
70 | COVERAGE_DEFINE(ofproto_update_port); |
71 | ||
f017d986 JR |
72 | /* Default fields to use for prefix tries in each flow table, unless something |
73 | * else is configured. */ | |
74 | const enum mf_field_id default_prefix_fields[2] = | |
75 | { MFF_IPV4_DST, MFF_IPV4_SRC }; | |
76 | ||
7ee20df1 BP |
77 | enum ofproto_state { |
78 | S_OPENFLOW, /* Processing OpenFlow commands. */ | |
254750ce | 79 | S_EVICT, /* Evicting flows from over-limit tables. */ |
7ee20df1 BP |
80 | S_FLUSH, /* Deleting all flow table rules. */ |
81 | }; | |
82 | ||
83 | enum ofoperation_type { | |
84 | OFOPERATION_ADD, | |
85 | OFOPERATION_DELETE, | |
b277c7cc BP |
86 | OFOPERATION_MODIFY, |
87 | OFOPERATION_REPLACE | |
7ee20df1 BP |
88 | }; |
89 | ||
90 | /* A single OpenFlow request can execute any number of operations. The | |
91 | * ofopgroup maintain OpenFlow state common to all of the operations, e.g. the | |
92 | * ofconn to which an error reply should be sent if necessary. | |
93 | * | |
94 | * ofproto initiates some operations internally. These operations are still | |
95 | * assigned to groups but will not have an associated ofconn. */ | |
96 | struct ofopgroup { | |
97 | struct ofproto *ofproto; /* Owning ofproto. */ | |
98 | struct list ofproto_node; /* In ofproto's "pending" list. */ | |
99 | struct list ops; /* List of "struct ofoperation"s. */ | |
e615b0a3 | 100 | int n_running; /* Number of ops still pending. */ |
7ee20df1 BP |
101 | |
102 | /* Data needed to send OpenFlow reply on failure or to send a buffered | |
103 | * packet on success. | |
104 | * | |
105 | * If list_is_empty(ofconn_node) then this ofopgroup never had an | |
106 | * associated ofconn or its ofconn's connection dropped after it initiated | |
107 | * the operation. In the latter case 'ofconn' is a wild pointer that | |
108 | * refers to freed memory, so the 'ofconn' member must be used only if | |
109 | * !list_is_empty(ofconn_node). | |
110 | */ | |
111 | struct list ofconn_node; /* In ofconn's list of pending opgroups. */ | |
112 | struct ofconn *ofconn; /* ofconn for reply (but see note above). */ | |
113 | struct ofp_header *request; /* Original request (truncated at 64 bytes). */ | |
114 | uint32_t buffer_id; /* Buffer id from original request. */ | |
7ee20df1 BP |
115 | }; |
116 | ||
7024dffe BP |
117 | static struct ofopgroup *ofopgroup_create_unattached(struct ofproto *); |
118 | static struct ofopgroup *ofopgroup_create(struct ofproto *, struct ofconn *, | |
119 | const struct ofp_header *, | |
120 | uint32_t buffer_id); | |
7ee20df1 | 121 | static void ofopgroup_submit(struct ofopgroup *); |
e615b0a3 | 122 | static void ofopgroup_complete(struct ofopgroup *); |
7ee20df1 BP |
123 | |
124 | /* A single flow table operation. */ | |
125 | struct ofoperation { | |
126 | struct ofopgroup *group; /* Owning group. */ | |
127 | struct list group_node; /* In ofopgroup's "ops" list. */ | |
128 | struct hmap_node hmap_node; /* In ofproto's "deletions" hmap. */ | |
129 | struct rule *rule; /* Rule being operated upon. */ | |
130 | enum ofoperation_type type; /* Type of operation. */ | |
08043761 | 131 | |
b277c7cc BP |
132 | /* OFOPERATION_MODIFY, OFOPERATION_REPLACE: The old actions, if the actions |
133 | * are changing. */ | |
dc723c44 | 134 | const struct rule_actions *actions; |
08043761 | 135 | |
2b07c8b1 BP |
136 | /* OFOPERATION_DELETE. */ |
137 | enum ofp_flow_removed_reason reason; /* Reason flow was removed. */ | |
138 | ||
3f517bcd DB |
139 | ovs_be64 flow_cookie; /* Rule's old flow cookie. */ |
140 | uint16_t idle_timeout; /* Rule's old idle timeout. */ | |
141 | uint16_t hard_timeout; /* Rule's old hard timeout. */ | |
142 | enum ofputil_flow_mod_flags flags; /* Rule's old flags. */ | |
143 | enum ofperr error; /* 0 if no error. */ | |
7ee20df1 BP |
144 | }; |
145 | ||
a7d94793 BP |
146 | static struct ofoperation *ofoperation_create(struct ofopgroup *, |
147 | struct rule *, | |
2b07c8b1 BP |
148 | enum ofoperation_type, |
149 | enum ofp_flow_removed_reason); | |
7ee20df1 BP |
150 | static void ofoperation_destroy(struct ofoperation *); |
151 | ||
d0918789 BP |
152 | /* oftable. */ |
153 | static void oftable_init(struct oftable *); | |
154 | static void oftable_destroy(struct oftable *); | |
878ae780 | 155 | |
254750ce BP |
156 | static void oftable_set_name(struct oftable *, const char *name); |
157 | ||
158 | static void oftable_disable_eviction(struct oftable *); | |
159 | static void oftable_enable_eviction(struct oftable *, | |
160 | const struct mf_subfield *fields, | |
161 | size_t n_fields); | |
162 | ||
15aaf599 | 163 | static void oftable_remove_rule(struct rule *rule) OVS_REQUIRES(ofproto_mutex); |
8b81d1ef | 164 | static void oftable_remove_rule__(struct ofproto *, struct rule *) |
15aaf599 | 165 | OVS_REQUIRES(ofproto_mutex); |
b277c7cc | 166 | static void oftable_insert_rule(struct rule *); |
064af421 | 167 | |
254750ce BP |
168 | /* A set of rules within a single OpenFlow table (oftable) that have the same |
169 | * values for the oftable's eviction_fields. A rule to be evicted, when one is | |
170 | * needed, is taken from the eviction group that contains the greatest number | |
171 | * of rules. | |
172 | * | |
173 | * An oftable owns any number of eviction groups, each of which contains any | |
174 | * number of rules. | |
175 | * | |
176 | * Membership in an eviction group is imprecise, based on the hash of the | |
177 | * oftable's eviction_fields (in the eviction_group's id_node.hash member). | |
178 | * That is, if two rules have different eviction_fields, but those | |
179 | * eviction_fields hash to the same value, then they will belong to the same | |
180 | * eviction_group anyway. | |
181 | * | |
182 | * (When eviction is not enabled on an oftable, we don't track any eviction | |
183 | * groups, to save time and space.) */ | |
184 | struct eviction_group { | |
185 | struct hmap_node id_node; /* In oftable's "eviction_groups_by_id". */ | |
186 | struct heap_node size_node; /* In oftable's "eviction_groups_by_size". */ | |
187 | struct heap rules; /* Contains "struct rule"s. */ | |
188 | }; | |
189 | ||
15aaf599 BP |
190 | static bool choose_rule_to_evict(struct oftable *table, struct rule **rulep); |
191 | static void ofproto_evict(struct ofproto *) OVS_EXCLUDED(ofproto_mutex); | |
dc437090 | 192 | static uint32_t rule_eviction_priority(struct ofproto *ofproto, struct rule *); |
b277c7cc BP |
193 | static void eviction_group_add_rule(struct rule *); |
194 | static void eviction_group_remove_rule(struct rule *); | |
f29152ca | 195 | |
a9b22b7f BP |
196 | /* Criteria that flow_mod and other operations use for selecting rules on |
197 | * which to operate. */ | |
198 | struct rule_criteria { | |
199 | /* An OpenFlow table or 255 for all tables. */ | |
200 | uint8_t table_id; | |
201 | ||
202 | /* OpenFlow matching criteria. Interpreted different in "loose" way by | |
203 | * collect_rules_loose() and "strict" way by collect_rules_strict(), as | |
204 | * defined in the OpenFlow spec. */ | |
205 | struct cls_rule cr; | |
206 | ||
207 | /* Matching criteria for the OpenFlow cookie. Consider a bit B in a rule's | |
208 | * cookie and the corresponding bits C in 'cookie' and M in 'cookie_mask'. | |
209 | * The rule will not be selected if M is 1 and B != C. */ | |
210 | ovs_be64 cookie; | |
211 | ovs_be64 cookie_mask; | |
212 | ||
213 | /* Selection based on actions within a rule: | |
214 | * | |
215 | * If out_port != OFPP_ANY, selects only rules that output to out_port. | |
216 | * If out_group != OFPG_ALL, select only rules that output to out_group. */ | |
217 | ofp_port_t out_port; | |
218 | uint32_t out_group; | |
219 | }; | |
220 | ||
221 | static void rule_criteria_init(struct rule_criteria *, uint8_t table_id, | |
222 | const struct match *match, | |
223 | unsigned int priority, | |
224 | ovs_be64 cookie, ovs_be64 cookie_mask, | |
225 | ofp_port_t out_port, uint32_t out_group); | |
226 | static void rule_criteria_destroy(struct rule_criteria *); | |
227 | ||
15aaf599 BP |
228 | /* A packet that needs to be passed to rule_execute(). |
229 | * | |
230 | * (We can't do this immediately from ofopgroup_complete() because that holds | |
231 | * ofproto_mutex, which rule_execute() needs released.) */ | |
35412852 BP |
232 | struct rule_execute { |
233 | struct list list_node; /* In struct ofproto's "rule_executes" list. */ | |
234 | struct rule *rule; /* Owns a reference to the rule. */ | |
235 | ofp_port_t in_port; | |
236 | struct ofpbuf *packet; /* Owns the packet. */ | |
237 | }; | |
238 | ||
15aaf599 | 239 | static void run_rule_executes(struct ofproto *) OVS_EXCLUDED(ofproto_mutex); |
35412852 BP |
240 | static void destroy_rule_executes(struct ofproto *); |
241 | ||
d0918789 | 242 | /* ofport. */ |
15aaf599 | 243 | static void ofport_destroy__(struct ofport *) OVS_EXCLUDED(ofproto_mutex); |
d0918789 BP |
244 | static void ofport_destroy(struct ofport *); |
245 | ||
246 | static void update_port(struct ofproto *, const char *devname); | |
247 | static int init_ports(struct ofproto *); | |
248 | static void reinit_ports(struct ofproto *); | |
7ee20df1 | 249 | |
fdcea803 GS |
250 | static long long int ofport_get_usage(const struct ofproto *, |
251 | ofp_port_t ofp_port); | |
252 | static void ofport_set_usage(struct ofproto *, ofp_port_t ofp_port, | |
253 | long long int last_used); | |
865b26a4 | 254 | static void ofport_remove_usage(struct ofproto *, ofp_port_t ofp_port); |
fdcea803 GS |
255 | |
256 | /* Ofport usage. | |
257 | * | |
258 | * Keeps track of the currently used and recently used ofport values and is | |
259 | * used to prevent immediate recycling of ofport values. */ | |
260 | struct ofport_usage { | |
261 | struct hmap_node hmap_node; /* In struct ofproto's "ofport_usage" hmap. */ | |
262 | ofp_port_t ofp_port; /* OpenFlow port number. */ | |
263 | long long int last_used; /* Last time the 'ofp_port' was used. LLONG_MAX | |
264 | represents in-use ofports. */ | |
265 | }; | |
266 | ||
254750ce | 267 | /* rule. */ |
254750ce | 268 | static void ofproto_rule_send_removed(struct rule *, uint8_t reason); |
adcf00ba AZ |
269 | static bool rule_is_modifiable(const struct rule *rule, |
270 | enum ofputil_flow_mod_flags flag); | |
254750ce | 271 | |
d0918789 | 272 | /* OpenFlow. */ |
90bf1e07 | 273 | static enum ofperr add_flow(struct ofproto *, struct ofconn *, |
e3b56933 | 274 | struct ofputil_flow_mod *, |
90bf1e07 | 275 | const struct ofp_header *); |
1ebeaaa7 JS |
276 | static void do_add_flow(struct ofproto *, struct ofconn *, |
277 | const struct ofp_header *request, uint32_t buffer_id, | |
278 | struct rule *); | |
b277c7cc BP |
279 | static enum ofperr modify_flows__(struct ofproto *, struct ofconn *, |
280 | struct ofputil_flow_mod *, | |
a8e547c1 BP |
281 | const struct ofp_header *, |
282 | const struct rule_collection *); | |
ad3efdcb EJ |
283 | static void delete_flow__(struct rule *rule, struct ofopgroup *, |
284 | enum ofp_flow_removed_reason) | |
15aaf599 | 285 | OVS_REQUIRES(ofproto_mutex); |
7e9f8266 BP |
286 | static bool ofproto_group_exists__(const struct ofproto *ofproto, |
287 | uint32_t group_id) | |
288 | OVS_REQ_RDLOCK(ofproto->groups_rwlock); | |
84d68566 SH |
289 | static bool ofproto_group_exists(const struct ofproto *ofproto, |
290 | uint32_t group_id) | |
7e9f8266 | 291 | OVS_EXCLUDED(ofproto->groups_rwlock); |
7395c052 | 292 | static enum ofperr add_group(struct ofproto *, struct ofputil_group_mod *); |
e03248b7 | 293 | static bool handle_openflow(struct ofconn *, const struct ofpbuf *); |
90bf1e07 | 294 | static enum ofperr handle_flow_mod__(struct ofproto *, struct ofconn *, |
e3b56933 | 295 | struct ofputil_flow_mod *, |
15aaf599 BP |
296 | const struct ofp_header *) |
297 | OVS_EXCLUDED(ofproto_mutex); | |
65e0be10 BP |
298 | static void calc_duration(long long int start, long long int now, |
299 | uint32_t *sec, uint32_t *nsec); | |
f29152ca | 300 | |
d0918789 BP |
301 | /* ofproto. */ |
302 | static uint64_t pick_datapath_id(const struct ofproto *); | |
303 | static uint64_t pick_fallback_dpid(void); | |
304 | static void ofproto_destroy__(struct ofproto *); | |
ada3428f | 305 | static void update_mtu(struct ofproto *, struct ofport *); |
6b3f7f02 | 306 | static void meter_delete(struct ofproto *, uint32_t first, uint32_t last); |
f29152ca | 307 | |
d0918789 | 308 | /* unixctl. */ |
abe529af | 309 | static void ofproto_unixctl_init(void); |
f29152ca | 310 | |
abe529af BP |
311 | /* All registered ofproto classes, in probe order. */ |
312 | static const struct ofproto_class **ofproto_classes; | |
313 | static size_t n_ofproto_classes; | |
314 | static size_t allocated_ofproto_classes; | |
7aa697dd | 315 | |
15aaf599 BP |
316 | /* Global lock that protects all flow table operations. */ |
317 | struct ovs_mutex ofproto_mutex = OVS_MUTEX_INITIALIZER; | |
abe7b10f | 318 | |
e79a6c83 | 319 | unsigned ofproto_flow_limit = OFPROTO_FLOW_LIMIT_DEFAULT; |
72310b04 | 320 | unsigned ofproto_max_idle = OFPROTO_MAX_IDLE_DEFAULT; |
380f49c4 | 321 | |
e79a6c83 | 322 | size_t n_handlers, n_revalidators; |
6567010f | 323 | |
f797957a | 324 | /* Map from datapath name to struct ofproto, for use by unixctl commands. */ |
abe529af | 325 | static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos); |
ebe482fd | 326 | |
e1b1d06a JP |
327 | /* Initial mappings of port to OpenFlow number mappings. */ |
328 | static struct shash init_ofp_ports = SHASH_INITIALIZER(&init_ofp_ports); | |
329 | ||
abe529af | 330 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
f29152ca | 331 | |
40358701 GS |
332 | /* The default value of true waits for flow restore. */ |
333 | static bool flow_restore_wait = true; | |
334 | ||
b0408fca JP |
335 | /* Must be called to initialize the ofproto library. |
336 | * | |
337 | * The caller may pass in 'iface_hints', which contains an shash of | |
338 | * "iface_hint" elements indexed by the interface's name. The provider | |
339 | * may use these hints to describe the startup configuration in order to | |
340 | * reinitialize its state. The caller owns the provided data, so a | |
341 | * provider will make copies of anything required. An ofproto provider | |
342 | * will remove any existing state that is not described by the hint, and | |
343 | * may choose to remove it all. */ | |
344 | void | |
345 | ofproto_init(const struct shash *iface_hints) | |
abe529af | 346 | { |
e1b1d06a | 347 | struct shash_node *node; |
b0408fca | 348 | size_t i; |
f29152ca | 349 | |
b0408fca JP |
350 | ofproto_class_register(&ofproto_dpif_class); |
351 | ||
e1b1d06a JP |
352 | /* Make a local copy, since we don't own 'iface_hints' elements. */ |
353 | SHASH_FOR_EACH(node, iface_hints) { | |
354 | const struct iface_hint *orig_hint = node->data; | |
355 | struct iface_hint *new_hint = xmalloc(sizeof *new_hint); | |
356 | const char *br_type = ofproto_normalize_type(orig_hint->br_type); | |
357 | ||
358 | new_hint->br_name = xstrdup(orig_hint->br_name); | |
359 | new_hint->br_type = xstrdup(br_type); | |
360 | new_hint->ofp_port = orig_hint->ofp_port; | |
361 | ||
362 | shash_add(&init_ofp_ports, node->name, new_hint); | |
363 | } | |
364 | ||
b0408fca | 365 | for (i = 0; i < n_ofproto_classes; i++) { |
e1b1d06a | 366 | ofproto_classes[i]->init(&init_ofp_ports); |
abe529af BP |
367 | } |
368 | } | |
f29152ca | 369 | |
abe529af BP |
370 | /* 'type' should be a normalized datapath type, as returned by |
371 | * ofproto_normalize_type(). Returns the corresponding ofproto_class | |
372 | * structure, or a null pointer if there is none registered for 'type'. */ | |
373 | static const struct ofproto_class * | |
374 | ofproto_class_find__(const char *type) | |
375 | { | |
376 | size_t i; | |
f29152ca | 377 | |
abe529af BP |
378 | for (i = 0; i < n_ofproto_classes; i++) { |
379 | const struct ofproto_class *class = ofproto_classes[i]; | |
380 | struct sset types; | |
381 | bool found; | |
064af421 | 382 | |
abe529af BP |
383 | sset_init(&types); |
384 | class->enumerate_types(&types); | |
385 | found = sset_contains(&types, type); | |
386 | sset_destroy(&types); | |
bcf84111 | 387 | |
abe529af BP |
388 | if (found) { |
389 | return class; | |
390 | } | |
391 | } | |
392 | VLOG_WARN("unknown datapath type %s", type); | |
393 | return NULL; | |
394 | } | |
064af421 | 395 | |
abe529af BP |
396 | /* Registers a new ofproto class. After successful registration, new ofprotos |
397 | * of that type can be created using ofproto_create(). */ | |
398 | int | |
399 | ofproto_class_register(const struct ofproto_class *new_class) | |
400 | { | |
401 | size_t i; | |
7aa697dd | 402 | |
abe529af BP |
403 | for (i = 0; i < n_ofproto_classes; i++) { |
404 | if (ofproto_classes[i] == new_class) { | |
405 | return EEXIST; | |
406 | } | |
407 | } | |
064af421 | 408 | |
abe529af BP |
409 | if (n_ofproto_classes >= allocated_ofproto_classes) { |
410 | ofproto_classes = x2nrealloc(ofproto_classes, | |
411 | &allocated_ofproto_classes, | |
412 | sizeof *ofproto_classes); | |
413 | } | |
414 | ofproto_classes[n_ofproto_classes++] = new_class; | |
415 | return 0; | |
416 | } | |
064af421 | 417 | |
abe529af BP |
418 | /* Unregisters a datapath provider. 'type' must have been previously |
419 | * registered and not currently be in use by any ofprotos. After | |
420 | * unregistration new datapaths of that type cannot be opened using | |
421 | * ofproto_create(). */ | |
422 | int | |
423 | ofproto_class_unregister(const struct ofproto_class *class) | |
424 | { | |
425 | size_t i; | |
76ce9432 | 426 | |
abe529af BP |
427 | for (i = 0; i < n_ofproto_classes; i++) { |
428 | if (ofproto_classes[i] == class) { | |
429 | for (i++; i < n_ofproto_classes; i++) { | |
430 | ofproto_classes[i - 1] = ofproto_classes[i]; | |
431 | } | |
432 | n_ofproto_classes--; | |
433 | return 0; | |
434 | } | |
435 | } | |
436 | VLOG_WARN("attempted to unregister an ofproto class that is not " | |
437 | "registered"); | |
438 | return EAFNOSUPPORT; | |
439 | } | |
4a4cdb3b | 440 | |
f79e673f BP |
441 | /* Clears 'types' and enumerates all registered ofproto types into it. The |
442 | * caller must first initialize the sset. */ | |
443 | void | |
444 | ofproto_enumerate_types(struct sset *types) | |
445 | { | |
abe529af | 446 | size_t i; |
064af421 | 447 | |
c799c306 | 448 | sset_clear(types); |
abe529af BP |
449 | for (i = 0; i < n_ofproto_classes; i++) { |
450 | ofproto_classes[i]->enumerate_types(types); | |
451 | } | |
f79e673f | 452 | } |
064af421 | 453 | |
f79e673f BP |
454 | /* Returns the fully spelled out name for the given ofproto 'type'. |
455 | * | |
456 | * Normalized type string can be compared with strcmp(). Unnormalized type | |
457 | * string might be the same even if they have different spellings. */ | |
458 | const char * | |
459 | ofproto_normalize_type(const char *type) | |
460 | { | |
abe529af | 461 | return type && type[0] ? type : "system"; |
f79e673f | 462 | } |
064af421 | 463 | |
f79e673f BP |
464 | /* Clears 'names' and enumerates the names of all known created ofprotos with |
465 | * the given 'type'. The caller must first initialize the sset. Returns 0 if | |
466 | * successful, otherwise a positive errno value. | |
467 | * | |
468 | * Some kinds of datapaths might not be practically enumerable. This is not | |
469 | * considered an error. */ | |
470 | int | |
471 | ofproto_enumerate_names(const char *type, struct sset *names) | |
472 | { | |
abe529af BP |
473 | const struct ofproto_class *class = ofproto_class_find__(type); |
474 | return class ? class->enumerate_names(type, names) : EAFNOSUPPORT; | |
239ad7d1 | 475 | } |
7aa697dd | 476 | |
064af421 | 477 | int |
abe529af | 478 | ofproto_create(const char *datapath_name, const char *datapath_type, |
064af421 BP |
479 | struct ofproto **ofprotop) |
480 | { | |
abe529af BP |
481 | const struct ofproto_class *class; |
482 | struct ofproto *ofproto; | |
064af421 | 483 | int error; |
c2f0373a | 484 | int i; |
064af421 BP |
485 | |
486 | *ofprotop = NULL; | |
487 | ||
7aa697dd BP |
488 | ofproto_unixctl_init(); |
489 | ||
abe529af BP |
490 | datapath_type = ofproto_normalize_type(datapath_type); |
491 | class = ofproto_class_find__(datapath_type); | |
492 | if (!class) { | |
493 | VLOG_WARN("could not create datapath %s of unknown type %s", | |
494 | datapath_name, datapath_type); | |
495 | return EAFNOSUPPORT; | |
064af421 BP |
496 | } |
497 | ||
abe529af BP |
498 | ofproto = class->alloc(); |
499 | if (!ofproto) { | |
500 | VLOG_ERR("failed to allocate datapath %s of type %s", | |
501 | datapath_name, datapath_type); | |
502 | return ENOMEM; | |
503 | } | |
504 | ||
505 | /* Initialize. */ | |
abe7b10f | 506 | ovs_mutex_lock(&ofproto_mutex); |
abe529af BP |
507 | memset(ofproto, 0, sizeof *ofproto); |
508 | ofproto->ofproto_class = class; | |
509 | ofproto->name = xstrdup(datapath_name); | |
510 | ofproto->type = xstrdup(datapath_type); | |
511 | hmap_insert(&all_ofprotos, &ofproto->hmap_node, | |
512 | hash_string(ofproto->name, 0)); | |
513 | ofproto->datapath_id = 0; | |
8402c74b | 514 | ofproto->forward_bpdu = false; |
abe529af | 515 | ofproto->fallback_dpid = pick_fallback_dpid(); |
061bfea4 BP |
516 | ofproto->mfr_desc = NULL; |
517 | ofproto->hw_desc = NULL; | |
518 | ofproto->sw_desc = NULL; | |
519 | ofproto->serial_desc = NULL; | |
520 | ofproto->dp_desc = NULL; | |
7257b535 | 521 | ofproto->frag_handling = OFPC_FRAG_NORMAL; |
abe529af | 522 | hmap_init(&ofproto->ports); |
fdcea803 | 523 | hmap_init(&ofproto->ofport_usage); |
abe529af | 524 | shash_init(&ofproto->port_by_name); |
e1b1d06a | 525 | simap_init(&ofproto->ofp_requests); |
430dbb14 | 526 | ofproto->max_ports = ofp_to_u16(OFPP_MAX); |
448c2fa8 | 527 | ofproto->eviction_group_timer = LLONG_MIN; |
6c1491fb BP |
528 | ofproto->tables = NULL; |
529 | ofproto->n_tables = 0; | |
98eaac36 | 530 | hindex_init(&ofproto->cookies); |
e503cc19 | 531 | list_init(&ofproto->expirable); |
abe529af | 532 | ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name); |
7ee20df1 BP |
533 | ofproto->state = S_OPENFLOW; |
534 | list_init(&ofproto->pending); | |
dd5616b3 | 535 | ofproto->n_pending = 0; |
7ee20df1 | 536 | hmap_init(&ofproto->deletions); |
35412852 | 537 | guarded_list_init(&ofproto->rule_executes); |
52a90c29 BP |
538 | ofproto->vlan_bitmap = NULL; |
539 | ofproto->vlans_changed = false; | |
ada3428f | 540 | ofproto->min_mtu = INT_MAX; |
7395c052 NZ |
541 | ovs_rwlock_init(&ofproto->groups_rwlock); |
542 | hmap_init(&ofproto->groups); | |
abe7b10f | 543 | ovs_mutex_unlock(&ofproto_mutex); |
7cb279c2 SH |
544 | ofproto->ogf.capabilities = OFPGFC_CHAINING | OFPGFC_SELECT_LIVENESS | |
545 | OFPGFC_SELECT_WEIGHT; | |
f4fb341b | 546 | ofproto->ogf.max_groups[OFPGT11_ALL] = OFPG_MAX; |
fe7e5749 | 547 | ofproto->ogf.max_groups[OFPGT11_SELECT] = OFPG_MAX; |
f4fb341b | 548 | ofproto->ogf.max_groups[OFPGT11_INDIRECT] = OFPG_MAX; |
dd8cd4b4 | 549 | ofproto->ogf.max_groups[OFPGT11_FF] = OFPG_MAX; |
ddc627ad | 550 | ofproto->ogf.actions[0] = |
f0e7025f BP |
551 | (1 << OFPAT11_OUTPUT) | |
552 | (1 << OFPAT11_COPY_TTL_OUT) | | |
553 | (1 << OFPAT11_COPY_TTL_IN) | | |
554 | (1 << OFPAT11_SET_MPLS_TTL) | | |
555 | (1 << OFPAT11_DEC_MPLS_TTL) | | |
556 | (1 << OFPAT11_PUSH_VLAN) | | |
557 | (1 << OFPAT11_POP_VLAN) | | |
558 | (1 << OFPAT11_PUSH_MPLS) | | |
559 | (1 << OFPAT11_POP_MPLS) | | |
560 | (1 << OFPAT11_SET_QUEUE) | | |
561 | (1 << OFPAT11_GROUP) | | |
562 | (1 << OFPAT11_SET_NW_TTL) | | |
563 | (1 << OFPAT11_DEC_NW_TTL) | | |
564 | (1 << OFPAT12_SET_FIELD); | |
565 | /* not supported: | |
566 | * (1 << OFPAT13_PUSH_PBB) | | |
567 | * (1 << OFPAT13_POP_PBB) */ | |
abe529af | 568 | |
0f5f95a9 | 569 | error = ofproto->ofproto_class->construct(ofproto); |
19a87e36 | 570 | if (error) { |
abe529af | 571 | VLOG_ERR("failed to open datapath %s: %s", |
10a89ef0 | 572 | datapath_name, ovs_strerror(error)); |
abe529af | 573 | ofproto_destroy__(ofproto); |
19a87e36 BP |
574 | return error; |
575 | } | |
073e2a6f | 576 | |
c2f0373a | 577 | /* Check that hidden tables, if any, are at the end. */ |
cb22974d | 578 | ovs_assert(ofproto->n_tables); |
c2f0373a BP |
579 | for (i = 0; i + 1 < ofproto->n_tables; i++) { |
580 | enum oftable_flags flags = ofproto->tables[i].flags; | |
581 | enum oftable_flags next_flags = ofproto->tables[i + 1].flags; | |
582 | ||
cb22974d | 583 | ovs_assert(!(flags & OFTABLE_HIDDEN) || next_flags & OFTABLE_HIDDEN); |
c2f0373a | 584 | } |
19a87e36 | 585 | |
abe529af | 586 | ofproto->datapath_id = pick_datapath_id(ofproto); |
abe529af | 587 | init_ports(ofproto); |
7aa697dd | 588 | |
9cae45dc JR |
589 | /* Initialize meters table. */ |
590 | if (ofproto->ofproto_class->meter_get_features) { | |
591 | ofproto->ofproto_class->meter_get_features(ofproto, | |
592 | &ofproto->meter_features); | |
593 | } else { | |
594 | memset(&ofproto->meter_features, 0, sizeof ofproto->meter_features); | |
595 | } | |
596 | ofproto->meters = xzalloc((ofproto->meter_features.max_meters + 1) | |
597 | * sizeof(struct meter *)); | |
598 | ||
abe529af | 599 | *ofprotop = ofproto; |
064af421 BP |
600 | return 0; |
601 | } | |
602 | ||
91858960 BP |
603 | /* Must be called (only) by an ofproto implementation in its constructor |
604 | * function. See the large comment on 'construct' in struct ofproto_class for | |
605 | * details. */ | |
0f5f95a9 BP |
606 | void |
607 | ofproto_init_tables(struct ofproto *ofproto, int n_tables) | |
608 | { | |
609 | struct oftable *table; | |
610 | ||
cb22974d BP |
611 | ovs_assert(!ofproto->n_tables); |
612 | ovs_assert(n_tables >= 1 && n_tables <= 255); | |
0f5f95a9 BP |
613 | |
614 | ofproto->n_tables = n_tables; | |
615 | ofproto->tables = xmalloc(n_tables * sizeof *ofproto->tables); | |
616 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
617 | oftable_init(table); | |
618 | } | |
619 | } | |
620 | ||
91858960 BP |
621 | /* To be optionally called (only) by an ofproto implementation in its |
622 | * constructor function. See the large comment on 'construct' in struct | |
623 | * ofproto_class for details. | |
624 | * | |
625 | * Sets the maximum number of ports to 'max_ports'. The ofproto generic layer | |
626 | * will then ensure that actions passed into the ofproto implementation will | |
627 | * not refer to OpenFlow ports numbered 'max_ports' or higher. If this | |
628 | * function is not called, there will be no such restriction. | |
629 | * | |
630 | * Reserved ports numbered OFPP_MAX and higher are special and not subject to | |
631 | * the 'max_ports' restriction. */ | |
632 | void | |
430dbb14 | 633 | ofproto_init_max_ports(struct ofproto *ofproto, uint16_t max_ports) |
91858960 | 634 | { |
430dbb14 | 635 | ovs_assert(max_ports <= ofp_to_u16(OFPP_MAX)); |
91858960 BP |
636 | ofproto->max_ports = max_ports; |
637 | } | |
638 | ||
e825ace2 BP |
639 | uint64_t |
640 | ofproto_get_datapath_id(const struct ofproto *ofproto) | |
641 | { | |
642 | return ofproto->datapath_id; | |
643 | } | |
644 | ||
064af421 BP |
645 | void |
646 | ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id) | |
647 | { | |
648 | uint64_t old_dpid = p->datapath_id; | |
fa60c019 | 649 | p->datapath_id = datapath_id ? datapath_id : pick_datapath_id(p); |
064af421 | 650 | if (p->datapath_id != old_dpid) { |
76ce9432 BP |
651 | /* Force all active connections to reconnect, since there is no way to |
652 | * notify a controller that the datapath ID has changed. */ | |
fa05809b | 653 | ofproto_reconnect_controllers(p); |
064af421 BP |
654 | } |
655 | } | |
656 | ||
76ce9432 BP |
657 | void |
658 | ofproto_set_controllers(struct ofproto *p, | |
659 | const struct ofproto_controller *controllers, | |
1d9ffc17 | 660 | size_t n_controllers, uint32_t allowed_versions) |
76ce9432 | 661 | { |
1d9ffc17 SH |
662 | connmgr_set_controllers(p->connmgr, controllers, n_controllers, |
663 | allowed_versions); | |
064af421 BP |
664 | } |
665 | ||
31681a5d JP |
666 | void |
667 | ofproto_set_fail_mode(struct ofproto *p, enum ofproto_fail_mode fail_mode) | |
668 | { | |
19a87e36 | 669 | connmgr_set_fail_mode(p->connmgr, fail_mode); |
31681a5d JP |
670 | } |
671 | ||
fa05809b BP |
672 | /* Drops the connections between 'ofproto' and all of its controllers, forcing |
673 | * them to reconnect. */ | |
674 | void | |
675 | ofproto_reconnect_controllers(struct ofproto *ofproto) | |
676 | { | |
19a87e36 | 677 | connmgr_reconnect(ofproto->connmgr); |
917e50e1 BP |
678 | } |
679 | ||
680 | /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s | |
681 | * in-band control should guarantee access, in the same way that in-band | |
682 | * control guarantees access to OpenFlow controllers. */ | |
683 | void | |
684 | ofproto_set_extra_in_band_remotes(struct ofproto *ofproto, | |
685 | const struct sockaddr_in *extras, size_t n) | |
686 | { | |
19a87e36 | 687 | connmgr_set_extra_in_band_remotes(ofproto->connmgr, extras, n); |
917e50e1 BP |
688 | } |
689 | ||
b1da6250 BP |
690 | /* Sets the OpenFlow queue used by flows set up by in-band control on |
691 | * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control | |
692 | * flows will use the default queue. */ | |
693 | void | |
694 | ofproto_set_in_band_queue(struct ofproto *ofproto, int queue_id) | |
695 | { | |
19a87e36 | 696 | connmgr_set_in_band_queue(ofproto->connmgr, queue_id); |
b1da6250 BP |
697 | } |
698 | ||
084f5290 SH |
699 | /* Sets the number of flows at which eviction from the kernel flow table |
700 | * will occur. */ | |
701 | void | |
e79a6c83 | 702 | ofproto_set_flow_limit(unsigned limit) |
084f5290 | 703 | { |
e79a6c83 | 704 | ofproto_flow_limit = limit; |
084f5290 SH |
705 | } |
706 | ||
72310b04 JS |
707 | /* Sets the maximum idle time for flows in the datapath before they are |
708 | * expired. */ | |
709 | void | |
710 | ofproto_set_max_idle(unsigned max_idle) | |
711 | { | |
712 | ofproto_max_idle = max_idle; | |
713 | } | |
714 | ||
b53055f4 | 715 | /* If forward_bpdu is true, the NORMAL action will forward frames with |
8402c74b SS |
716 | * reserved (e.g. STP) destination Ethernet addresses. if forward_bpdu is false, |
717 | * the NORMAL action will drop these frames. */ | |
718 | void | |
719 | ofproto_set_forward_bpdu(struct ofproto *ofproto, bool forward_bpdu) | |
720 | { | |
721 | bool old_val = ofproto->forward_bpdu; | |
722 | ofproto->forward_bpdu = forward_bpdu; | |
723 | if (old_val != ofproto->forward_bpdu) { | |
724 | if (ofproto->ofproto_class->forward_bpdu_changed) { | |
725 | ofproto->ofproto_class->forward_bpdu_changed(ofproto); | |
726 | } | |
b53055f4 | 727 | } |
8402c74b SS |
728 | } |
729 | ||
e764773c | 730 | /* Sets the MAC aging timeout for the OFPP_NORMAL action on 'ofproto' to |
c4069512 BP |
731 | * 'idle_time', in seconds, and the maximum number of MAC table entries to |
732 | * 'max_entries'. */ | |
e764773c | 733 | void |
c4069512 BP |
734 | ofproto_set_mac_table_config(struct ofproto *ofproto, unsigned idle_time, |
735 | size_t max_entries) | |
e764773c | 736 | { |
c4069512 BP |
737 | if (ofproto->ofproto_class->set_mac_table_config) { |
738 | ofproto->ofproto_class->set_mac_table_config(ofproto, idle_time, | |
739 | max_entries); | |
e764773c BP |
740 | } |
741 | } | |
742 | ||
448a4b2f | 743 | void |
30ea0da7 | 744 | ofproto_set_threads(int n_handlers_, int n_revalidators_) |
448a4b2f | 745 | { |
e79a6c83 EJ |
746 | int threads = MAX(count_cpu_cores(), 2); |
747 | ||
30ea0da7 GS |
748 | n_revalidators = MAX(n_revalidators_, 0); |
749 | n_handlers = MAX(n_handlers_, 0); | |
e79a6c83 EJ |
750 | |
751 | if (!n_revalidators) { | |
752 | n_revalidators = n_handlers | |
753 | ? MAX(threads - (int) n_handlers, 1) | |
754 | : threads / 4 + 1; | |
755 | } | |
756 | ||
757 | if (!n_handlers) { | |
758 | n_handlers = MAX(threads - (int) n_revalidators, 1); | |
759 | } | |
448a4b2f AW |
760 | } |
761 | ||
8b6ff729 BP |
762 | void |
763 | ofproto_set_dp_desc(struct ofproto *p, const char *dp_desc) | |
764 | { | |
765 | free(p->dp_desc); | |
766 | p->dp_desc = dp_desc ? xstrdup(dp_desc) : NULL; | |
767 | } | |
768 | ||
064af421 | 769 | int |
81e2083f | 770 | ofproto_set_snoops(struct ofproto *ofproto, const struct sset *snoops) |
064af421 | 771 | { |
19a87e36 | 772 | return connmgr_set_snoops(ofproto->connmgr, snoops); |
064af421 BP |
773 | } |
774 | ||
775 | int | |
0193b2af JG |
776 | ofproto_set_netflow(struct ofproto *ofproto, |
777 | const struct netflow_options *nf_options) | |
064af421 | 778 | { |
abe529af BP |
779 | if (nf_options && sset_is_empty(&nf_options->collectors)) { |
780 | nf_options = NULL; | |
781 | } | |
782 | ||
783 | if (ofproto->ofproto_class->set_netflow) { | |
784 | return ofproto->ofproto_class->set_netflow(ofproto, nf_options); | |
064af421 | 785 | } else { |
abe529af | 786 | return nf_options ? EOPNOTSUPP : 0; |
064af421 BP |
787 | } |
788 | } | |
789 | ||
abe529af | 790 | int |
72b06300 BP |
791 | ofproto_set_sflow(struct ofproto *ofproto, |
792 | const struct ofproto_sflow_options *oso) | |
793 | { | |
abe529af BP |
794 | if (oso && sset_is_empty(&oso->targets)) { |
795 | oso = NULL; | |
796 | } | |
72b06300 | 797 | |
abe529af BP |
798 | if (ofproto->ofproto_class->set_sflow) { |
799 | return ofproto->ofproto_class->set_sflow(ofproto, oso); | |
72b06300 | 800 | } else { |
abe529af | 801 | return oso ? EOPNOTSUPP : 0; |
72b06300 BP |
802 | } |
803 | } | |
29089a54 RL |
804 | |
805 | int | |
806 | ofproto_set_ipfix(struct ofproto *ofproto, | |
807 | const struct ofproto_ipfix_bridge_exporter_options *bo, | |
808 | const struct ofproto_ipfix_flow_exporter_options *fo, | |
809 | size_t n_fo) | |
810 | { | |
811 | if (ofproto->ofproto_class->set_ipfix) { | |
812 | return ofproto->ofproto_class->set_ipfix(ofproto, bo, fo, n_fo); | |
813 | } else { | |
814 | return (bo || fo) ? EOPNOTSUPP : 0; | |
815 | } | |
816 | } | |
40358701 GS |
817 | |
818 | void | |
819 | ofproto_set_flow_restore_wait(bool flow_restore_wait_db) | |
820 | { | |
821 | flow_restore_wait = flow_restore_wait_db; | |
822 | } | |
823 | ||
824 | bool | |
825 | ofproto_get_flow_restore_wait(void) | |
826 | { | |
827 | return flow_restore_wait; | |
828 | } | |
829 | ||
e7934396 | 830 | \f |
21f7563c JP |
831 | /* Spanning Tree Protocol (STP) configuration. */ |
832 | ||
833 | /* Configures STP on 'ofproto' using the settings defined in 's'. If | |
834 | * 's' is NULL, disables STP. | |
835 | * | |
836 | * Returns 0 if successful, otherwise a positive errno value. */ | |
837 | int | |
838 | ofproto_set_stp(struct ofproto *ofproto, | |
839 | const struct ofproto_stp_settings *s) | |
840 | { | |
841 | return (ofproto->ofproto_class->set_stp | |
842 | ? ofproto->ofproto_class->set_stp(ofproto, s) | |
843 | : EOPNOTSUPP); | |
844 | } | |
845 | ||
846 | /* Retrieves STP status of 'ofproto' and stores it in 's'. If the | |
847 | * 'enabled' member of 's' is false, then the other members are not | |
848 | * meaningful. | |
849 | * | |
850 | * Returns 0 if successful, otherwise a positive errno value. */ | |
851 | int | |
852 | ofproto_get_stp_status(struct ofproto *ofproto, | |
853 | struct ofproto_stp_status *s) | |
854 | { | |
855 | return (ofproto->ofproto_class->get_stp_status | |
856 | ? ofproto->ofproto_class->get_stp_status(ofproto, s) | |
857 | : EOPNOTSUPP); | |
858 | } | |
859 | ||
860 | /* Configures STP on 'ofp_port' of 'ofproto' using the settings defined | |
861 | * in 's'. The caller is responsible for assigning STP port numbers | |
862 | * (using the 'port_num' member in the range of 1 through 255, inclusive) | |
863 | * and ensuring there are no duplicates. If the 's' is NULL, then STP | |
864 | * is disabled on the port. | |
865 | * | |
866 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
867 | int | |
4e022ec0 | 868 | ofproto_port_set_stp(struct ofproto *ofproto, ofp_port_t ofp_port, |
21f7563c JP |
869 | const struct ofproto_port_stp_settings *s) |
870 | { | |
871 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
872 | if (!ofport) { | |
873 | VLOG_WARN("%s: cannot configure STP on nonexistent port %"PRIu16, | |
874 | ofproto->name, ofp_port); | |
875 | return ENODEV; | |
876 | } | |
877 | ||
878 | return (ofproto->ofproto_class->set_stp_port | |
879 | ? ofproto->ofproto_class->set_stp_port(ofport, s) | |
880 | : EOPNOTSUPP); | |
881 | } | |
882 | ||
883 | /* Retrieves STP port status of 'ofp_port' on 'ofproto' and stores it in | |
884 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
885 | * are not meaningful. | |
886 | * | |
887 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
888 | int | |
4e022ec0 | 889 | ofproto_port_get_stp_status(struct ofproto *ofproto, ofp_port_t ofp_port, |
21f7563c JP |
890 | struct ofproto_port_stp_status *s) |
891 | { | |
892 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
893 | if (!ofport) { | |
b0a5c43b JP |
894 | VLOG_WARN_RL(&rl, "%s: cannot get STP status on nonexistent " |
895 | "port %"PRIu16, ofproto->name, ofp_port); | |
21f7563c JP |
896 | return ENODEV; |
897 | } | |
898 | ||
899 | return (ofproto->ofproto_class->get_stp_port_status | |
900 | ? ofproto->ofproto_class->get_stp_port_status(ofport, s) | |
901 | : EOPNOTSUPP); | |
902 | } | |
fd28ce3a JS |
903 | |
904 | /* Retrieves STP port statistics of 'ofp_port' on 'ofproto' and stores it in | |
905 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
906 | * are not meaningful. | |
907 | * | |
908 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
909 | int | |
910 | ofproto_port_get_stp_stats(struct ofproto *ofproto, ofp_port_t ofp_port, | |
911 | struct ofproto_port_stp_stats *s) | |
912 | { | |
913 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
914 | if (!ofport) { | |
915 | VLOG_WARN_RL(&rl, "%s: cannot get STP stats on nonexistent " | |
916 | "port %"PRIu16, ofproto->name, ofp_port); | |
917 | return ENODEV; | |
918 | } | |
919 | ||
920 | return (ofproto->ofproto_class->get_stp_port_stats | |
921 | ? ofproto->ofproto_class->get_stp_port_stats(ofport, s) | |
922 | : EOPNOTSUPP); | |
923 | } | |
21f7563c | 924 | \f |
8b36f51e EJ |
925 | /* Queue DSCP configuration. */ |
926 | ||
927 | /* Registers meta-data associated with the 'n_qdscp' Qualities of Service | |
928 | * 'queues' attached to 'ofport'. This data is not intended to be sufficient | |
929 | * to implement QoS. Instead, it is used to implement features which require | |
930 | * knowledge of what queues exist on a port, and some basic information about | |
931 | * them. | |
932 | * | |
933 | * Returns 0 if successful, otherwise a positive errno value. */ | |
934 | int | |
4e022ec0 | 935 | ofproto_port_set_queues(struct ofproto *ofproto, ofp_port_t ofp_port, |
8b36f51e EJ |
936 | const struct ofproto_port_queue *queues, |
937 | size_t n_queues) | |
938 | { | |
939 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
940 | ||
941 | if (!ofport) { | |
942 | VLOG_WARN("%s: cannot set queues on nonexistent port %"PRIu16, | |
943 | ofproto->name, ofp_port); | |
944 | return ENODEV; | |
945 | } | |
946 | ||
947 | return (ofproto->ofproto_class->set_queues | |
948 | ? ofproto->ofproto_class->set_queues(ofport, queues, n_queues) | |
949 | : EOPNOTSUPP); | |
950 | } | |
951 | \f | |
e7934396 BP |
952 | /* Connectivity Fault Management configuration. */ |
953 | ||
892815f5 | 954 | /* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */ |
e7934396 | 955 | void |
4e022ec0 | 956 | ofproto_port_clear_cfm(struct ofproto *ofproto, ofp_port_t ofp_port) |
e7934396 | 957 | { |
abe529af BP |
958 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
959 | if (ofport && ofproto->ofproto_class->set_cfm) { | |
a5610457 | 960 | ofproto->ofproto_class->set_cfm(ofport, NULL); |
e7934396 BP |
961 | } |
962 | } | |
72b06300 | 963 | |
892815f5 | 964 | /* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes |
93b8df38 EJ |
965 | * basic configuration from the configuration members in 'cfm', and the remote |
966 | * maintenance point ID from remote_mpid. Ignores the statistics members of | |
967 | * 'cfm'. | |
e7934396 | 968 | * |
892815f5 | 969 | * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */ |
e7934396 | 970 | void |
4e022ec0 | 971 | ofproto_port_set_cfm(struct ofproto *ofproto, ofp_port_t ofp_port, |
a5610457 | 972 | const struct cfm_settings *s) |
e7934396 BP |
973 | { |
974 | struct ofport *ofport; | |
abe529af | 975 | int error; |
e7934396 | 976 | |
abe529af | 977 | ofport = ofproto_get_port(ofproto, ofp_port); |
e7934396 | 978 | if (!ofport) { |
892815f5 BP |
979 | VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16, |
980 | ofproto->name, ofp_port); | |
e7934396 BP |
981 | return; |
982 | } | |
983 | ||
93b8df38 EJ |
984 | /* XXX: For configuration simplicity, we only support one remote_mpid |
985 | * outside of the CFM module. It's not clear if this is the correct long | |
986 | * term solution or not. */ | |
abe529af | 987 | error = (ofproto->ofproto_class->set_cfm |
a5610457 | 988 | ? ofproto->ofproto_class->set_cfm(ofport, s) |
abe529af BP |
989 | : EOPNOTSUPP); |
990 | if (error) { | |
991 | VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed (%s)", | |
992 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
10a89ef0 | 993 | ovs_strerror(error)); |
e7934396 | 994 | } |
e7934396 | 995 | } |
e7934396 | 996 | |
ccc09689 EJ |
997 | /* Configures BFD on 'ofp_port' in 'ofproto'. This function has no effect if |
998 | * 'ofproto' does not have a port 'ofp_port'. */ | |
999 | void | |
4e022ec0 | 1000 | ofproto_port_set_bfd(struct ofproto *ofproto, ofp_port_t ofp_port, |
ccc09689 EJ |
1001 | const struct smap *cfg) |
1002 | { | |
1003 | struct ofport *ofport; | |
1004 | int error; | |
1005 | ||
1006 | ofport = ofproto_get_port(ofproto, ofp_port); | |
1007 | if (!ofport) { | |
1008 | VLOG_WARN("%s: cannot configure bfd on nonexistent port %"PRIu16, | |
1009 | ofproto->name, ofp_port); | |
e8999bdc | 1010 | return; |
ccc09689 EJ |
1011 | } |
1012 | ||
1013 | error = (ofproto->ofproto_class->set_bfd | |
1014 | ? ofproto->ofproto_class->set_bfd(ofport, cfg) | |
1015 | : EOPNOTSUPP); | |
1016 | if (error) { | |
1017 | VLOG_WARN("%s: bfd configuration on port %"PRIu16" (%s) failed (%s)", | |
1018 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
10a89ef0 | 1019 | ovs_strerror(error)); |
ccc09689 EJ |
1020 | } |
1021 | } | |
1022 | ||
88bf179a AW |
1023 | /* Populates 'status' with the status of BFD on 'ofport'. Returns 0 on |
1024 | * success. Returns a negative number if there is no status change since | |
1025 | * last update. Returns a positive errno otherwise. Has no effect if | |
1026 | * 'ofp_port' is not an OpenFlow port in 'ofproto'. | |
1027 | * | |
1028 | * The caller must provide and own '*status'. */ | |
ccc09689 | 1029 | int |
4e022ec0 | 1030 | ofproto_port_get_bfd_status(struct ofproto *ofproto, ofp_port_t ofp_port, |
ccc09689 EJ |
1031 | struct smap *status) |
1032 | { | |
1033 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1034 | return (ofport && ofproto->ofproto_class->get_bfd_status | |
1035 | ? ofproto->ofproto_class->get_bfd_status(ofport, status) | |
1036 | : EOPNOTSUPP); | |
1037 | } | |
1038 | ||
fa066f01 BP |
1039 | /* Checks the status of LACP negotiation for 'ofp_port' within ofproto. |
1040 | * Returns 1 if LACP partner information for 'ofp_port' is up-to-date, | |
1041 | * 0 if LACP partner information is not current (generally indicating a | |
1042 | * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */ | |
1043 | int | |
4e022ec0 | 1044 | ofproto_port_is_lacp_current(struct ofproto *ofproto, ofp_port_t ofp_port) |
fa066f01 | 1045 | { |
abe529af BP |
1046 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1047 | return (ofport && ofproto->ofproto_class->port_is_lacp_current | |
1048 | ? ofproto->ofproto_class->port_is_lacp_current(ofport) | |
fa066f01 | 1049 | : -1); |
e7934396 | 1050 | } |
e7934396 | 1051 | \f |
fa066f01 | 1052 | /* Bundles. */ |
e7934396 | 1053 | |
abe529af BP |
1054 | /* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'. |
1055 | * A bundle is the same concept as a Port in OVSDB, that is, it consists of one | |
1056 | * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN | |
1057 | * configuration plus, if there is more than one slave, a bonding | |
1058 | * configuration. | |
1059 | * | |
1060 | * If 'aux' is already registered then this function updates its configuration | |
1061 | * to 's'. Otherwise, this function registers a new bundle. | |
1062 | * | |
1063 | * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL | |
1064 | * port. */ | |
1065 | int | |
1066 | ofproto_bundle_register(struct ofproto *ofproto, void *aux, | |
1067 | const struct ofproto_bundle_settings *s) | |
fa066f01 | 1068 | { |
abe529af BP |
1069 | return (ofproto->ofproto_class->bundle_set |
1070 | ? ofproto->ofproto_class->bundle_set(ofproto, aux, s) | |
1071 | : EOPNOTSUPP); | |
fa066f01 BP |
1072 | } |
1073 | ||
abe529af BP |
1074 | /* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'. |
1075 | * If no such bundle has been registered, this has no effect. */ | |
1076 | int | |
1077 | ofproto_bundle_unregister(struct ofproto *ofproto, void *aux) | |
e7934396 | 1078 | { |
abe529af | 1079 | return ofproto_bundle_register(ofproto, aux, NULL); |
e7934396 | 1080 | } |
fa066f01 | 1081 | |
e7934396 | 1082 | \f |
abe529af BP |
1083 | /* Registers a mirror associated with client data pointer 'aux' in 'ofproto'. |
1084 | * If 'aux' is already registered then this function updates its configuration | |
c06bba01 | 1085 | * to 's'. Otherwise, this function registers a new mirror. */ |
abe529af BP |
1086 | int |
1087 | ofproto_mirror_register(struct ofproto *ofproto, void *aux, | |
1088 | const struct ofproto_mirror_settings *s) | |
064af421 | 1089 | { |
abe529af BP |
1090 | return (ofproto->ofproto_class->mirror_set |
1091 | ? ofproto->ofproto_class->mirror_set(ofproto, aux, s) | |
1092 | : EOPNOTSUPP); | |
064af421 BP |
1093 | } |
1094 | ||
abe529af BP |
1095 | /* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'. |
1096 | * If no mirror has been registered, this has no effect. */ | |
1097 | int | |
1098 | ofproto_mirror_unregister(struct ofproto *ofproto, void *aux) | |
064af421 | 1099 | { |
abe529af | 1100 | return ofproto_mirror_register(ofproto, aux, NULL); |
064af421 BP |
1101 | } |
1102 | ||
9d24de3b JP |
1103 | /* Retrieves statistics from mirror associated with client data pointer |
1104 | * 'aux' in 'ofproto'. Stores packet and byte counts in 'packets' and | |
1105 | * 'bytes', respectively. If a particular counters is not supported, | |
1106 | * the appropriate argument is set to UINT64_MAX. */ | |
1107 | int | |
1108 | ofproto_mirror_get_stats(struct ofproto *ofproto, void *aux, | |
1109 | uint64_t *packets, uint64_t *bytes) | |
1110 | { | |
1111 | if (!ofproto->ofproto_class->mirror_get_stats) { | |
1112 | *packets = *bytes = UINT64_MAX; | |
1113 | return EOPNOTSUPP; | |
1114 | } | |
1115 | ||
1116 | return ofproto->ofproto_class->mirror_get_stats(ofproto, aux, | |
1117 | packets, bytes); | |
1118 | } | |
1119 | ||
abe529af BP |
1120 | /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on |
1121 | * which all packets are flooded, instead of using MAC learning. If | |
1122 | * 'flood_vlans' is NULL, then MAC learning applies to all VLANs. | |
1123 | * | |
1124 | * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL | |
1125 | * port. */ | |
1126 | int | |
1127 | ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans) | |
abdfe474 | 1128 | { |
abe529af BP |
1129 | return (ofproto->ofproto_class->set_flood_vlans |
1130 | ? ofproto->ofproto_class->set_flood_vlans(ofproto, flood_vlans) | |
1131 | : EOPNOTSUPP); | |
abdfe474 JP |
1132 | } |
1133 | ||
abe529af BP |
1134 | /* Returns true if 'aux' is a registered bundle that is currently in use as the |
1135 | * output for a mirror. */ | |
1136 | bool | |
b4affc74 | 1137 | ofproto_is_mirror_output_bundle(const struct ofproto *ofproto, void *aux) |
abe529af BP |
1138 | { |
1139 | return (ofproto->ofproto_class->is_mirror_output_bundle | |
1140 | ? ofproto->ofproto_class->is_mirror_output_bundle(ofproto, aux) | |
1141 | : false); | |
1142 | } | |
1143 | \f | |
254750ce BP |
1144 | /* Configuration of OpenFlow tables. */ |
1145 | ||
1146 | /* Returns the number of OpenFlow tables in 'ofproto'. */ | |
1147 | int | |
1148 | ofproto_get_n_tables(const struct ofproto *ofproto) | |
1149 | { | |
1150 | return ofproto->n_tables; | |
1151 | } | |
1152 | ||
adcf00ba AZ |
1153 | /* Returns the number of Controller visible OpenFlow tables |
1154 | * in 'ofproto'. This number will exclude Hidden tables. | |
1155 | * This funtion's return value should be less or equal to that of | |
1156 | * ofproto_get_n_tables() . */ | |
1157 | uint8_t | |
1158 | ofproto_get_n_visible_tables(const struct ofproto *ofproto) | |
1159 | { | |
1160 | uint8_t n = ofproto->n_tables; | |
1161 | ||
1162 | /* Count only non-hidden tables in the number of tables. (Hidden tables, | |
1163 | * if present, are always at the end.) */ | |
1164 | while(n && (ofproto->tables[n - 1].flags & OFTABLE_HIDDEN)) { | |
1165 | n--; | |
1166 | } | |
1167 | ||
1168 | return n; | |
1169 | } | |
1170 | ||
254750ce BP |
1171 | /* Configures the OpenFlow table in 'ofproto' with id 'table_id' with the |
1172 | * settings from 's'. 'table_id' must be in the range 0 through the number of | |
1173 | * OpenFlow tables in 'ofproto' minus 1, inclusive. | |
1174 | * | |
1175 | * For read-only tables, only the name may be configured. */ | |
1176 | void | |
1177 | ofproto_configure_table(struct ofproto *ofproto, int table_id, | |
1178 | const struct ofproto_table_settings *s) | |
1179 | { | |
1180 | struct oftable *table; | |
1181 | ||
cb22974d | 1182 | ovs_assert(table_id >= 0 && table_id < ofproto->n_tables); |
254750ce BP |
1183 | table = &ofproto->tables[table_id]; |
1184 | ||
1185 | oftable_set_name(table, s->name); | |
1186 | ||
1187 | if (table->flags & OFTABLE_READONLY) { | |
1188 | return; | |
1189 | } | |
1190 | ||
1191 | if (s->groups) { | |
1192 | oftable_enable_eviction(table, s->groups, s->n_groups); | |
1193 | } else { | |
1194 | oftable_disable_eviction(table); | |
1195 | } | |
1196 | ||
1197 | table->max_flows = s->max_flows; | |
06f81620 | 1198 | fat_rwlock_wrlock(&table->cls.rwlock); |
254750ce BP |
1199 | if (classifier_count(&table->cls) > table->max_flows |
1200 | && table->eviction_fields) { | |
1201 | /* 'table' contains more flows than allowed. We might not be able to | |
1202 | * evict them right away because of the asynchronous nature of flow | |
1203 | * table changes. Schedule eviction for later. */ | |
1204 | switch (ofproto->state) { | |
1205 | case S_OPENFLOW: | |
1206 | ofproto->state = S_EVICT; | |
1207 | break; | |
1208 | case S_EVICT: | |
1209 | case S_FLUSH: | |
1210 | /* We're already deleting flows, nothing more to do. */ | |
1211 | break; | |
1212 | } | |
1213 | } | |
13751fd8 JR |
1214 | |
1215 | classifier_set_prefix_fields(&table->cls, | |
1216 | s->prefix_fields, s->n_prefix_fields); | |
1217 | ||
06f81620 | 1218 | fat_rwlock_unlock(&table->cls.rwlock); |
254750ce BP |
1219 | } |
1220 | \f | |
81e2083f BP |
1221 | bool |
1222 | ofproto_has_snoops(const struct ofproto *ofproto) | |
1223 | { | |
1224 | return connmgr_has_snoops(ofproto->connmgr); | |
1225 | } | |
1226 | ||
064af421 | 1227 | void |
81e2083f | 1228 | ofproto_get_snoops(const struct ofproto *ofproto, struct sset *snoops) |
064af421 | 1229 | { |
19a87e36 | 1230 | connmgr_get_snoops(ofproto->connmgr, snoops); |
064af421 BP |
1231 | } |
1232 | ||
15aaf599 | 1233 | static void |
ad9ca2fc BP |
1234 | ofproto_rule_delete__(struct ofproto *ofproto, struct rule *rule, |
1235 | uint8_t reason) | |
15aaf599 BP |
1236 | OVS_REQUIRES(ofproto_mutex) |
1237 | { | |
1238 | struct ofopgroup *group; | |
1239 | ||
1240 | ovs_assert(!rule->pending); | |
15aaf599 BP |
1241 | |
1242 | group = ofopgroup_create_unattached(ofproto); | |
ad9ca2fc | 1243 | delete_flow__(rule, group, reason); |
15aaf599 BP |
1244 | ofopgroup_submit(group); |
1245 | } | |
1246 | ||
a73fcd71 | 1247 | /* Deletes 'rule' from 'ofproto'. |
8037acb4 | 1248 | * |
b74cb5d8 BP |
1249 | * Within an ofproto implementation, this function allows an ofproto |
1250 | * implementation to destroy any rules that remain when its ->destruct() | |
1251 | * function is called. This function is not suitable for use elsewhere in an | |
1252 | * ofproto implementation. | |
1253 | * | |
b74cb5d8 | 1254 | * This function implements steps 4.4 and 4.5 in the section titled "Rule Life |
8b81d1ef | 1255 | * Cycle" in ofproto-provider.h. */ |
b74cb5d8 | 1256 | void |
8b81d1ef | 1257 | ofproto_rule_delete(struct ofproto *ofproto, struct rule *rule) |
15aaf599 | 1258 | OVS_EXCLUDED(ofproto_mutex) |
7ee20df1 | 1259 | { |
7ee20df1 | 1260 | struct ofopgroup *group; |
8037acb4 | 1261 | |
15aaf599 | 1262 | ovs_mutex_lock(&ofproto_mutex); |
8037acb4 | 1263 | ovs_assert(!rule->pending); |
8037acb4 BP |
1264 | |
1265 | group = ofopgroup_create_unattached(ofproto); | |
1266 | ofoperation_create(group, rule, OFOPERATION_DELETE, OFPRR_DELETE); | |
8b81d1ef | 1267 | oftable_remove_rule__(ofproto, rule); |
8037acb4 BP |
1268 | ofproto->ofproto_class->rule_delete(rule); |
1269 | ofopgroup_submit(group); | |
15aaf599 BP |
1270 | |
1271 | ovs_mutex_unlock(&ofproto_mutex); | |
8037acb4 BP |
1272 | } |
1273 | ||
1274 | static void | |
1275 | ofproto_flush__(struct ofproto *ofproto) | |
15aaf599 | 1276 | OVS_EXCLUDED(ofproto_mutex) |
8037acb4 | 1277 | { |
d0918789 | 1278 | struct oftable *table; |
7ee20df1 BP |
1279 | |
1280 | if (ofproto->ofproto_class->flush) { | |
1281 | ofproto->ofproto_class->flush(ofproto); | |
1282 | } | |
1283 | ||
15aaf599 | 1284 | ovs_mutex_lock(&ofproto_mutex); |
b772ded8 | 1285 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
7ee20df1 BP |
1286 | struct rule *rule, *next_rule; |
1287 | struct cls_cursor cursor; | |
1288 | ||
5c67e4af BP |
1289 | if (table->flags & OFTABLE_HIDDEN) { |
1290 | continue; | |
1291 | } | |
1292 | ||
06f81620 | 1293 | fat_rwlock_rdlock(&table->cls.rwlock); |
d0918789 | 1294 | cls_cursor_init(&cursor, &table->cls, NULL); |
06f81620 | 1295 | fat_rwlock_unlock(&table->cls.rwlock); |
7ee20df1 BP |
1296 | CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) { |
1297 | if (!rule->pending) { | |
ad9ca2fc | 1298 | ofproto_rule_delete__(ofproto, rule, OFPRR_DELETE); |
7ee20df1 BP |
1299 | } |
1300 | } | |
1301 | } | |
15aaf599 | 1302 | ovs_mutex_unlock(&ofproto_mutex); |
7ee20df1 BP |
1303 | } |
1304 | ||
7395c052 NZ |
1305 | static void delete_group(struct ofproto *ofproto, uint32_t group_id); |
1306 | ||
abe529af BP |
1307 | static void |
1308 | ofproto_destroy__(struct ofproto *ofproto) | |
15aaf599 | 1309 | OVS_EXCLUDED(ofproto_mutex) |
abe529af | 1310 | { |
d0918789 | 1311 | struct oftable *table; |
6c1491fb | 1312 | |
cb22974d | 1313 | ovs_assert(list_is_empty(&ofproto->pending)); |
7ee20df1 | 1314 | |
35412852 | 1315 | destroy_rule_executes(ofproto); |
7395c052 | 1316 | delete_group(ofproto, OFPG_ALL); |
5c09b672 GS |
1317 | |
1318 | guarded_list_destroy(&ofproto->rule_executes); | |
7395c052 NZ |
1319 | ovs_rwlock_destroy(&ofproto->groups_rwlock); |
1320 | hmap_destroy(&ofproto->groups); | |
1321 | ||
abe529af | 1322 | connmgr_destroy(ofproto->connmgr); |
fa066f01 | 1323 | |
abe529af BP |
1324 | hmap_remove(&all_ofprotos, &ofproto->hmap_node); |
1325 | free(ofproto->name); | |
955a7127 | 1326 | free(ofproto->type); |
abe529af BP |
1327 | free(ofproto->mfr_desc); |
1328 | free(ofproto->hw_desc); | |
1329 | free(ofproto->sw_desc); | |
1330 | free(ofproto->serial_desc); | |
1331 | free(ofproto->dp_desc); | |
abe529af | 1332 | hmap_destroy(&ofproto->ports); |
fdcea803 | 1333 | hmap_destroy(&ofproto->ofport_usage); |
abe529af | 1334 | shash_destroy(&ofproto->port_by_name); |
e1b1d06a | 1335 | simap_destroy(&ofproto->ofp_requests); |
6c1491fb | 1336 | |
b772ded8 | 1337 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
d0918789 | 1338 | oftable_destroy(table); |
6c1491fb BP |
1339 | } |
1340 | free(ofproto->tables); | |
fa066f01 | 1341 | |
7ee20df1 BP |
1342 | hmap_destroy(&ofproto->deletions); |
1343 | ||
1406c79b BP |
1344 | ovs_assert(hindex_is_empty(&ofproto->cookies)); |
1345 | hindex_destroy(&ofproto->cookies); | |
1346 | ||
52a90c29 BP |
1347 | free(ofproto->vlan_bitmap); |
1348 | ||
abe529af BP |
1349 | ofproto->ofproto_class->dealloc(ofproto); |
1350 | } | |
fa066f01 | 1351 | |
064af421 BP |
1352 | void |
1353 | ofproto_destroy(struct ofproto *p) | |
15aaf599 | 1354 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 1355 | { |
ca0f572c | 1356 | struct ofport *ofport, *next_ofport; |
fdcea803 | 1357 | struct ofport_usage *usage, *next_usage; |
064af421 BP |
1358 | |
1359 | if (!p) { | |
1360 | return; | |
1361 | } | |
1362 | ||
717de9ff JR |
1363 | if (p->meters) { |
1364 | meter_delete(p, 1, p->meter_features.max_meters); | |
1365 | p->meter_features.max_meters = 0; | |
1366 | free(p->meters); | |
1367 | p->meters = NULL; | |
1368 | } | |
1369 | ||
7ee20df1 | 1370 | ofproto_flush__(p); |
4e8e4213 | 1371 | HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) { |
abe529af | 1372 | ofport_destroy(ofport); |
064af421 | 1373 | } |
064af421 | 1374 | |
fdcea803 GS |
1375 | HMAP_FOR_EACH_SAFE (usage, next_usage, hmap_node, &p->ofport_usage) { |
1376 | hmap_remove(&p->ofport_usage, &usage->hmap_node); | |
1377 | free(usage); | |
1378 | } | |
1379 | ||
abe529af | 1380 | p->ofproto_class->destruct(p); |
f416c8d6 JR |
1381 | /* Destroying rules is deferred, must have 'ofproto' around for them. */ |
1382 | ovsrcu_postpone(ofproto_destroy__, p); | |
064af421 BP |
1383 | } |
1384 | ||
abe529af BP |
1385 | /* Destroys the datapath with the respective 'name' and 'type'. With the Linux |
1386 | * kernel datapath, for example, this destroys the datapath in the kernel, and | |
1387 | * with the netdev-based datapath, it tears down the data structures that | |
1388 | * represent the datapath. | |
1389 | * | |
1390 | * The datapath should not be currently open as an ofproto. */ | |
064af421 | 1391 | int |
abe529af | 1392 | ofproto_delete(const char *name, const char *type) |
064af421 | 1393 | { |
abe529af BP |
1394 | const struct ofproto_class *class = ofproto_class_find__(type); |
1395 | return (!class ? EAFNOSUPPORT | |
1396 | : !class->del ? EACCES | |
1397 | : class->del(type, name)); | |
064af421 BP |
1398 | } |
1399 | ||
e9e28be3 BP |
1400 | static void |
1401 | process_port_change(struct ofproto *ofproto, int error, char *devname) | |
1402 | { | |
1403 | if (error == ENOBUFS) { | |
1404 | reinit_ports(ofproto); | |
1405 | } else if (!error) { | |
1406 | update_port(ofproto, devname); | |
1407 | free(devname); | |
1408 | } | |
1409 | } | |
1410 | ||
11a574a7 JP |
1411 | int |
1412 | ofproto_type_run(const char *datapath_type) | |
1413 | { | |
1414 | const struct ofproto_class *class; | |
1415 | int error; | |
1416 | ||
1417 | datapath_type = ofproto_normalize_type(datapath_type); | |
1418 | class = ofproto_class_find__(datapath_type); | |
1419 | ||
1420 | error = class->type_run ? class->type_run(datapath_type) : 0; | |
1421 | if (error && error != EAGAIN) { | |
1422 | VLOG_ERR_RL(&rl, "%s: type_run failed (%s)", | |
10a89ef0 | 1423 | datapath_type, ovs_strerror(error)); |
11a574a7 JP |
1424 | } |
1425 | return error; | |
1426 | } | |
1427 | ||
11a574a7 JP |
1428 | void |
1429 | ofproto_type_wait(const char *datapath_type) | |
1430 | { | |
1431 | const struct ofproto_class *class; | |
1432 | ||
1433 | datapath_type = ofproto_normalize_type(datapath_type); | |
1434 | class = ofproto_class_find__(datapath_type); | |
1435 | ||
1436 | if (class->type_wait) { | |
1437 | class->type_wait(datapath_type); | |
1438 | } | |
1439 | } | |
1440 | ||
06b79a9a BP |
1441 | static bool |
1442 | any_pending_ops(const struct ofproto *p) | |
15aaf599 | 1443 | OVS_EXCLUDED(ofproto_mutex) |
06b79a9a | 1444 | { |
15aaf599 BP |
1445 | bool b; |
1446 | ||
1447 | ovs_mutex_lock(&ofproto_mutex); | |
1448 | b = !list_is_empty(&p->pending); | |
1449 | ovs_mutex_unlock(&ofproto_mutex); | |
1450 | ||
1451 | return b; | |
06b79a9a BP |
1452 | } |
1453 | ||
064af421 | 1454 | int |
abe529af | 1455 | ofproto_run(struct ofproto *p) |
064af421 | 1456 | { |
064af421 | 1457 | int error; |
da4a6191 | 1458 | uint64_t new_seq; |
064af421 | 1459 | |
abe529af | 1460 | error = p->ofproto_class->run(p); |
5fcc0d00 | 1461 | if (error && error != EAGAIN) { |
10a89ef0 | 1462 | VLOG_ERR_RL(&rl, "%s: run failed (%s)", p->name, ovs_strerror(error)); |
149f577a JG |
1463 | } |
1464 | ||
35412852 BP |
1465 | run_rule_executes(p); |
1466 | ||
448c2fa8 EJ |
1467 | /* Restore the eviction group heap invariant occasionally. */ |
1468 | if (p->eviction_group_timer < time_msec()) { | |
1469 | size_t i; | |
1470 | ||
1471 | p->eviction_group_timer = time_msec() + 1000; | |
1472 | ||
1473 | for (i = 0; i < p->n_tables; i++) { | |
1474 | struct oftable *table = &p->tables[i]; | |
1475 | struct eviction_group *evg; | |
1476 | struct cls_cursor cursor; | |
448c2fa8 EJ |
1477 | struct rule *rule; |
1478 | ||
1479 | if (!table->eviction_fields) { | |
1480 | continue; | |
1481 | } | |
1482 | ||
15aaf599 | 1483 | ovs_mutex_lock(&ofproto_mutex); |
06f81620 | 1484 | fat_rwlock_rdlock(&table->cls.rwlock); |
c4ea31b1 | 1485 | cls_cursor_init(&cursor, &table->cls, NULL); |
448c2fa8 | 1486 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
6d56c1f1 K |
1487 | if (rule->idle_timeout || rule->hard_timeout) { |
1488 | if (!rule->eviction_group) { | |
1489 | eviction_group_add_rule(rule); | |
1490 | } else { | |
1491 | heap_raw_change(&rule->evg_node, | |
1492 | rule_eviction_priority(p, rule)); | |
1493 | } | |
448c2fa8 EJ |
1494 | } |
1495 | } | |
06f81620 | 1496 | fat_rwlock_unlock(&table->cls.rwlock); |
6d56c1f1 K |
1497 | |
1498 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { | |
1499 | heap_rebuild(&evg->rules); | |
1500 | } | |
15aaf599 | 1501 | ovs_mutex_unlock(&ofproto_mutex); |
448c2fa8 EJ |
1502 | } |
1503 | } | |
1504 | ||
5bf0e941 | 1505 | if (p->ofproto_class->port_poll) { |
7436ed80 BP |
1506 | char *devname; |
1507 | ||
5bf0e941 BP |
1508 | while ((error = p->ofproto_class->port_poll(p, &devname)) != EAGAIN) { |
1509 | process_port_change(p, error, devname); | |
064af421 | 1510 | } |
e9e28be3 | 1511 | } |
031d8bff | 1512 | |
da4a6191 JS |
1513 | new_seq = seq_read(connectivity_seq_get()); |
1514 | if (new_seq != p->change_seq) { | |
1515 | struct sset devnames; | |
1516 | const char *devname; | |
1517 | struct ofport *ofport; | |
1518 | ||
1519 | /* Update OpenFlow port status for any port whose netdev has changed. | |
1520 | * | |
1521 | * Refreshing a given 'ofport' can cause an arbitrary ofport to be | |
1522 | * destroyed, so it's not safe to update ports directly from the | |
1523 | * HMAP_FOR_EACH loop, or even to use HMAP_FOR_EACH_SAFE. Instead, we | |
1524 | * need this two-phase approach. */ | |
1525 | sset_init(&devnames); | |
1526 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
61501798 AW |
1527 | uint64_t port_change_seq; |
1528 | ||
1529 | port_change_seq = netdev_get_change_seq(ofport->netdev); | |
1530 | if (ofport->change_seq != port_change_seq) { | |
1531 | ofport->change_seq = port_change_seq; | |
1532 | sset_add(&devnames, netdev_get_name(ofport->netdev)); | |
1533 | } | |
031d8bff | 1534 | } |
da4a6191 JS |
1535 | SSET_FOR_EACH (devname, &devnames) { |
1536 | update_port(p, devname); | |
1537 | } | |
1538 | sset_destroy(&devnames); | |
1539 | ||
1540 | p->change_seq = new_seq; | |
064af421 BP |
1541 | } |
1542 | ||
7ee20df1 BP |
1543 | switch (p->state) { |
1544 | case S_OPENFLOW: | |
1545 | connmgr_run(p->connmgr, handle_openflow); | |
1546 | break; | |
1547 | ||
254750ce BP |
1548 | case S_EVICT: |
1549 | connmgr_run(p->connmgr, NULL); | |
1550 | ofproto_evict(p); | |
06b79a9a | 1551 | if (!any_pending_ops(p)) { |
254750ce BP |
1552 | p->state = S_OPENFLOW; |
1553 | } | |
1554 | break; | |
1555 | ||
7ee20df1 BP |
1556 | case S_FLUSH: |
1557 | connmgr_run(p->connmgr, NULL); | |
1558 | ofproto_flush__(p); | |
06b79a9a | 1559 | if (!any_pending_ops(p)) { |
7ee20df1 BP |
1560 | connmgr_flushed(p->connmgr); |
1561 | p->state = S_OPENFLOW; | |
1562 | } | |
1563 | break; | |
1564 | ||
1565 | default: | |
428b2edd | 1566 | OVS_NOT_REACHED(); |
7ee20df1 | 1567 | } |
064af421 | 1568 | |
5fcc0d00 BP |
1569 | return error; |
1570 | } | |
1571 | ||
064af421 BP |
1572 | void |
1573 | ofproto_wait(struct ofproto *p) | |
1574 | { | |
abe529af | 1575 | p->ofproto_class->wait(p); |
5bf0e941 BP |
1576 | if (p->ofproto_class->port_poll_wait) { |
1577 | p->ofproto_class->port_poll_wait(p); | |
e7934396 | 1578 | } |
da4a6191 | 1579 | seq_wait(connectivity_seq_get(), p->change_seq); |
7ee20df1 BP |
1580 | |
1581 | switch (p->state) { | |
1582 | case S_OPENFLOW: | |
1583 | connmgr_wait(p->connmgr, true); | |
1584 | break; | |
1585 | ||
254750ce | 1586 | case S_EVICT: |
7ee20df1 BP |
1587 | case S_FLUSH: |
1588 | connmgr_wait(p->connmgr, false); | |
06b79a9a | 1589 | if (!any_pending_ops(p)) { |
7ee20df1 BP |
1590 | poll_immediate_wake(); |
1591 | } | |
1592 | break; | |
1593 | } | |
064af421 BP |
1594 | } |
1595 | ||
064af421 BP |
1596 | bool |
1597 | ofproto_is_alive(const struct ofproto *p) | |
1598 | { | |
19a87e36 | 1599 | return connmgr_has_controllers(p->connmgr); |
064af421 BP |
1600 | } |
1601 | ||
0d085684 BP |
1602 | /* Adds some memory usage statistics for 'ofproto' into 'usage', for use with |
1603 | * memory_report(). */ | |
1604 | void | |
1605 | ofproto_get_memory_usage(const struct ofproto *ofproto, struct simap *usage) | |
1606 | { | |
1607 | const struct oftable *table; | |
1608 | unsigned int n_rules; | |
1609 | ||
1610 | simap_increase(usage, "ports", hmap_count(&ofproto->ports)); | |
15aaf599 BP |
1611 | |
1612 | ovs_mutex_lock(&ofproto_mutex); | |
0d085684 BP |
1613 | simap_increase(usage, "ops", |
1614 | ofproto->n_pending + hmap_count(&ofproto->deletions)); | |
15aaf599 | 1615 | ovs_mutex_unlock(&ofproto_mutex); |
0d085684 BP |
1616 | |
1617 | n_rules = 0; | |
1618 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
06f81620 | 1619 | fat_rwlock_rdlock(&table->cls.rwlock); |
0d085684 | 1620 | n_rules += classifier_count(&table->cls); |
06f81620 | 1621 | fat_rwlock_unlock(&table->cls.rwlock); |
0d085684 BP |
1622 | } |
1623 | simap_increase(usage, "rules", n_rules); | |
1624 | ||
1625 | if (ofproto->ofproto_class->get_memory_usage) { | |
1626 | ofproto->ofproto_class->get_memory_usage(ofproto, usage); | |
1627 | } | |
1628 | ||
1629 | connmgr_get_memory_usage(ofproto->connmgr, usage); | |
1630 | } | |
1631 | ||
1c030aa5 EJ |
1632 | void |
1633 | ofproto_type_get_memory_usage(const char *datapath_type, struct simap *usage) | |
1634 | { | |
1635 | const struct ofproto_class *class; | |
1636 | ||
1637 | datapath_type = ofproto_normalize_type(datapath_type); | |
1638 | class = ofproto_class_find__(datapath_type); | |
1639 | ||
1640 | if (class && class->type_get_memory_usage) { | |
1641 | class->type_get_memory_usage(datapath_type, usage); | |
1642 | } | |
1643 | } | |
1644 | ||
bffc0589 | 1645 | void |
2cdcb898 | 1646 | ofproto_get_ofproto_controller_info(const struct ofproto *ofproto, |
bffc0589 AE |
1647 | struct shash *info) |
1648 | { | |
19a87e36 | 1649 | connmgr_get_controller_info(ofproto->connmgr, info); |
bffc0589 AE |
1650 | } |
1651 | ||
1652 | void | |
1653 | ofproto_free_ofproto_controller_info(struct shash *info) | |
1654 | { | |
72ba2ed3 | 1655 | connmgr_free_controller_info(info); |
bffc0589 AE |
1656 | } |
1657 | ||
b5827b24 BP |
1658 | /* Makes a deep copy of 'old' into 'port'. */ |
1659 | void | |
1660 | ofproto_port_clone(struct ofproto_port *port, const struct ofproto_port *old) | |
1661 | { | |
1662 | port->name = xstrdup(old->name); | |
1663 | port->type = xstrdup(old->type); | |
1664 | port->ofp_port = old->ofp_port; | |
1665 | } | |
1666 | ||
1667 | /* Frees memory allocated to members of 'ofproto_port'. | |
3a6ccc8c | 1668 | * |
b5827b24 BP |
1669 | * Do not call this function on an ofproto_port obtained from |
1670 | * ofproto_port_dump_next(): that function retains ownership of the data in the | |
1671 | * ofproto_port. */ | |
1672 | void | |
1673 | ofproto_port_destroy(struct ofproto_port *ofproto_port) | |
1674 | { | |
1675 | free(ofproto_port->name); | |
1676 | free(ofproto_port->type); | |
1677 | } | |
1678 | ||
b5827b24 | 1679 | /* Initializes 'dump' to begin dumping the ports in an ofproto. |
3a6ccc8c | 1680 | * |
b5827b24 BP |
1681 | * This function provides no status indication. An error status for the entire |
1682 | * dump operation is provided when it is completed by calling | |
1683 | * ofproto_port_dump_done(). | |
1684 | */ | |
1685 | void | |
1686 | ofproto_port_dump_start(struct ofproto_port_dump *dump, | |
1687 | const struct ofproto *ofproto) | |
1688 | { | |
abe529af BP |
1689 | dump->ofproto = ofproto; |
1690 | dump->error = ofproto->ofproto_class->port_dump_start(ofproto, | |
1691 | &dump->state); | |
b5827b24 BP |
1692 | } |
1693 | ||
1694 | /* Attempts to retrieve another port from 'dump', which must have been created | |
1695 | * with ofproto_port_dump_start(). On success, stores a new ofproto_port into | |
1696 | * 'port' and returns true. On failure, returns false. | |
1697 | * | |
1698 | * Failure might indicate an actual error or merely that the last port has been | |
1699 | * dumped. An error status for the entire dump operation is provided when it | |
1700 | * is completed by calling ofproto_port_dump_done(). | |
1701 | * | |
1702 | * The ofproto owns the data stored in 'port'. It will remain valid until at | |
1703 | * least the next time 'dump' is passed to ofproto_port_dump_next() or | |
1704 | * ofproto_port_dump_done(). */ | |
1705 | bool | |
1706 | ofproto_port_dump_next(struct ofproto_port_dump *dump, | |
1707 | struct ofproto_port *port) | |
1708 | { | |
abe529af BP |
1709 | const struct ofproto *ofproto = dump->ofproto; |
1710 | ||
1711 | if (dump->error) { | |
1712 | return false; | |
1713 | } | |
b5827b24 | 1714 | |
abe529af BP |
1715 | dump->error = ofproto->ofproto_class->port_dump_next(ofproto, dump->state, |
1716 | port); | |
1717 | if (dump->error) { | |
1718 | ofproto->ofproto_class->port_dump_done(ofproto, dump->state); | |
1719 | return false; | |
b5827b24 | 1720 | } |
abe529af | 1721 | return true; |
b5827b24 BP |
1722 | } |
1723 | ||
1724 | /* Completes port table dump operation 'dump', which must have been created | |
1725 | * with ofproto_port_dump_start(). Returns 0 if the dump operation was | |
1726 | * error-free, otherwise a positive errno value describing the problem. */ | |
3a6ccc8c | 1727 | int |
b5827b24 | 1728 | ofproto_port_dump_done(struct ofproto_port_dump *dump) |
3a6ccc8c | 1729 | { |
abe529af BP |
1730 | const struct ofproto *ofproto = dump->ofproto; |
1731 | if (!dump->error) { | |
1732 | dump->error = ofproto->ofproto_class->port_dump_done(ofproto, | |
1733 | dump->state); | |
1734 | } | |
1735 | return dump->error == EOF ? 0 : dump->error; | |
b5827b24 BP |
1736 | } |
1737 | ||
0aeaabc8 JP |
1738 | /* Returns the type to pass to netdev_open() when a datapath of type |
1739 | * 'datapath_type' has a port of type 'port_type', for a few special | |
1740 | * cases when a netdev type differs from a port type. For example, when | |
1741 | * using the userspace datapath, a port of type "internal" needs to be | |
1742 | * opened as "tap". | |
1743 | * | |
1744 | * Returns either 'type' itself or a string literal, which must not be | |
1745 | * freed. */ | |
1746 | const char * | |
1747 | ofproto_port_open_type(const char *datapath_type, const char *port_type) | |
1748 | { | |
1749 | const struct ofproto_class *class; | |
1750 | ||
1751 | datapath_type = ofproto_normalize_type(datapath_type); | |
1752 | class = ofproto_class_find__(datapath_type); | |
1753 | if (!class) { | |
1754 | return port_type; | |
1755 | } | |
1756 | ||
1757 | return (class->port_open_type | |
1758 | ? class->port_open_type(datapath_type, port_type) | |
1759 | : port_type); | |
1760 | } | |
1761 | ||
81816a5f JP |
1762 | /* Attempts to add 'netdev' as a port on 'ofproto'. If 'ofp_portp' is |
1763 | * non-null and '*ofp_portp' is not OFPP_NONE, attempts to use that as | |
1764 | * the port's OpenFlow port number. | |
1765 | * | |
1766 | * If successful, returns 0 and sets '*ofp_portp' to the new port's | |
1767 | * OpenFlow port number (if 'ofp_portp' is non-null). On failure, | |
1768 | * returns a positive errno value and sets '*ofp_portp' to OFPP_NONE (if | |
1769 | * 'ofp_portp' is non-null). */ | |
b5827b24 BP |
1770 | int |
1771 | ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev, | |
4e022ec0 | 1772 | ofp_port_t *ofp_portp) |
b5827b24 | 1773 | { |
4e022ec0 | 1774 | ofp_port_t ofp_port = ofp_portp ? *ofp_portp : OFPP_NONE; |
3a6ccc8c BP |
1775 | int error; |
1776 | ||
e1b1d06a | 1777 | error = ofproto->ofproto_class->port_add(ofproto, netdev); |
1fa24dea | 1778 | if (!error) { |
e1b1d06a JP |
1779 | const char *netdev_name = netdev_get_name(netdev); |
1780 | ||
4e022ec0 AW |
1781 | simap_put(&ofproto->ofp_requests, netdev_name, |
1782 | ofp_to_u16(ofp_port)); | |
e1b1d06a | 1783 | update_port(ofproto, netdev_name); |
1fa24dea | 1784 | } |
b5827b24 | 1785 | if (ofp_portp) { |
17f69db5 BP |
1786 | *ofp_portp = OFPP_NONE; |
1787 | if (!error) { | |
1788 | struct ofproto_port ofproto_port; | |
1789 | ||
1790 | error = ofproto_port_query_by_name(ofproto, | |
1791 | netdev_get_name(netdev), | |
1792 | &ofproto_port); | |
1793 | if (!error) { | |
1794 | *ofp_portp = ofproto_port.ofp_port; | |
1795 | ofproto_port_destroy(&ofproto_port); | |
1796 | } | |
1797 | } | |
3a6ccc8c BP |
1798 | } |
1799 | return error; | |
1800 | } | |
1801 | ||
b5827b24 BP |
1802 | /* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and |
1803 | * initializes '*port' appropriately; on failure, returns a positive errno | |
1804 | * value. | |
1805 | * | |
abe529af | 1806 | * The caller owns the data in 'ofproto_port' and must free it with |
b5827b24 BP |
1807 | * ofproto_port_destroy() when it is no longer needed. */ |
1808 | int | |
1809 | ofproto_port_query_by_name(const struct ofproto *ofproto, const char *devname, | |
1810 | struct ofproto_port *port) | |
a4e2e1f2 | 1811 | { |
b5827b24 BP |
1812 | int error; |
1813 | ||
abe529af BP |
1814 | error = ofproto->ofproto_class->port_query_by_name(ofproto, devname, port); |
1815 | if (error) { | |
1816 | memset(port, 0, sizeof *port); | |
b5827b24 BP |
1817 | } |
1818 | return error; | |
a4e2e1f2 EJ |
1819 | } |
1820 | ||
b5827b24 | 1821 | /* Deletes port number 'ofp_port' from the datapath for 'ofproto'. |
3a6ccc8c | 1822 | * Returns 0 if successful, otherwise a positive errno. */ |
064af421 | 1823 | int |
4e022ec0 | 1824 | ofproto_port_del(struct ofproto *ofproto, ofp_port_t ofp_port) |
064af421 | 1825 | { |
abe529af | 1826 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1264ec95 | 1827 | const char *name = ofport ? netdev_get_name(ofport->netdev) : "<unknown>"; |
e1b1d06a | 1828 | struct simap_node *ofp_request_node; |
3cf10406 | 1829 | int error; |
cdee00fd | 1830 | |
e1b1d06a JP |
1831 | ofp_request_node = simap_find(&ofproto->ofp_requests, name); |
1832 | if (ofp_request_node) { | |
1833 | simap_delete(&ofproto->ofp_requests, ofp_request_node); | |
1834 | } | |
1835 | ||
abe529af | 1836 | error = ofproto->ofproto_class->port_del(ofproto, ofp_port); |
892815f5 | 1837 | if (!error && ofport) { |
1264ec95 BP |
1838 | /* 'name' is the netdev's name and update_port() is going to close the |
1839 | * netdev. Just in case update_port() refers to 'name' after it | |
3a6ccc8c BP |
1840 | * destroys 'ofport', make a copy of it around the update_port() |
1841 | * call. */ | |
1842 | char *devname = xstrdup(name); | |
1843 | update_port(ofproto, devname); | |
1844 | free(devname); | |
3cf10406 BP |
1845 | } |
1846 | return error; | |
064af421 BP |
1847 | } |
1848 | ||
276f6518 SH |
1849 | static void |
1850 | flow_mod_init(struct ofputil_flow_mod *fm, | |
1851 | const struct match *match, unsigned int priority, | |
1852 | const struct ofpact *ofpacts, size_t ofpacts_len, | |
1853 | enum ofp_flow_mod_command command) | |
1854 | { | |
1855 | memset(fm, 0, sizeof *fm); | |
1856 | fm->match = *match; | |
1857 | fm->priority = priority; | |
1858 | fm->cookie = 0; | |
1859 | fm->new_cookie = 0; | |
1860 | fm->modify_cookie = false; | |
1861 | fm->table_id = 0; | |
1862 | fm->command = command; | |
1863 | fm->idle_timeout = 0; | |
1864 | fm->hard_timeout = 0; | |
1865 | fm->buffer_id = UINT32_MAX; | |
1866 | fm->out_port = OFPP_ANY; | |
1867 | fm->out_group = OFPG_ANY; | |
1868 | fm->flags = 0; | |
1869 | fm->ofpacts = CONST_CAST(struct ofpact *, ofpacts); | |
1870 | fm->ofpacts_len = ofpacts_len; | |
1871 | } | |
1872 | ||
97f63e57 BP |
1873 | static int |
1874 | simple_flow_mod(struct ofproto *ofproto, | |
1875 | const struct match *match, unsigned int priority, | |
1876 | const struct ofpact *ofpacts, size_t ofpacts_len, | |
1877 | enum ofp_flow_mod_command command) | |
1878 | { | |
1879 | struct ofputil_flow_mod fm; | |
1880 | ||
276f6518 | 1881 | flow_mod_init(&fm, match, priority, ofpacts, ofpacts_len, command); |
15aaf599 | 1882 | |
97f63e57 BP |
1883 | return handle_flow_mod__(ofproto, NULL, &fm, NULL); |
1884 | } | |
1885 | ||
6c1491fb | 1886 | /* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and |
fa8b054f BP |
1887 | * performs the 'n_actions' actions in 'actions'. The new flow will not |
1888 | * timeout. | |
1889 | * | |
1890 | * If cls_rule->priority is in the range of priorities supported by OpenFlow | |
1891 | * (0...65535, inclusive) then the flow will be visible to OpenFlow | |
1892 | * controllers; otherwise, it will be hidden. | |
1893 | * | |
f25d0cf3 | 1894 | * The caller retains ownership of 'cls_rule' and 'ofpacts'. |
6c1491fb BP |
1895 | * |
1896 | * This is a helper function for in-band control and fail-open. */ | |
064af421 | 1897 | void |
81a76618 BP |
1898 | ofproto_add_flow(struct ofproto *ofproto, const struct match *match, |
1899 | unsigned int priority, | |
f25d0cf3 | 1900 | const struct ofpact *ofpacts, size_t ofpacts_len) |
15aaf599 | 1901 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 1902 | { |
7ee20df1 | 1903 | const struct rule *rule; |
6f00e29b | 1904 | bool must_add; |
7ee20df1 | 1905 | |
97f63e57 BP |
1906 | /* First do a cheap check whether the rule we're looking for already exists |
1907 | * with the actions that we want. If it does, then we're done. */ | |
06f81620 | 1908 | fat_rwlock_rdlock(&ofproto->tables[0].cls.rwlock); |
81a76618 BP |
1909 | rule = rule_from_cls_rule(classifier_find_match_exactly( |
1910 | &ofproto->tables[0].cls, match, priority)); | |
6f00e29b | 1911 | if (rule) { |
dc723c44 | 1912 | const struct rule_actions *actions = rule_get_actions(rule); |
06a0f3e2 | 1913 | must_add = !ofpacts_equal(actions->ofpacts, actions->ofpacts_len, |
6f00e29b | 1914 | ofpacts, ofpacts_len); |
6f00e29b BP |
1915 | } else { |
1916 | must_add = true; | |
1917 | } | |
06f81620 | 1918 | fat_rwlock_unlock(&ofproto->tables[0].cls.rwlock); |
97f63e57 BP |
1919 | |
1920 | /* If there's no such rule or the rule doesn't have the actions we want, | |
1921 | * fall back to a executing a full flow mod. We can't optimize this at | |
1922 | * all because we didn't take enough locks above to ensure that the flow | |
1923 | * table didn't already change beneath us. */ | |
6f00e29b | 1924 | if (must_add) { |
97f63e57 BP |
1925 | simple_flow_mod(ofproto, match, priority, ofpacts, ofpacts_len, |
1926 | OFPFC_MODIFY_STRICT); | |
7ee20df1 | 1927 | } |
064af421 BP |
1928 | } |
1929 | ||
75a75043 | 1930 | /* Executes the flow modification specified in 'fm'. Returns 0 on success, an |
90bf1e07 BP |
1931 | * OFPERR_* OpenFlow error code on failure, or OFPROTO_POSTPONE if the |
1932 | * operation cannot be initiated now but may be retried later. | |
75a75043 | 1933 | * |
1b63b91e BP |
1934 | * This is a helper function for in-band control and fail-open and the "learn" |
1935 | * action. */ | |
75a75043 | 1936 | int |
e3b56933 | 1937 | ofproto_flow_mod(struct ofproto *ofproto, struct ofputil_flow_mod *fm) |
15aaf599 | 1938 | OVS_EXCLUDED(ofproto_mutex) |
75a75043 | 1939 | { |
b90d6ee5 JR |
1940 | /* Optimize for the most common case of a repeated learn action. |
1941 | * If an identical flow already exists we only need to update its | |
1942 | * 'modified' time. */ | |
1943 | if (fm->command == OFPFC_MODIFY_STRICT && fm->table_id != OFPTT_ALL | |
1944 | && !(fm->flags & OFPUTIL_FF_RESET_COUNTS)) { | |
1945 | struct oftable *table = &ofproto->tables[fm->table_id]; | |
b90d6ee5 JR |
1946 | struct rule *rule; |
1947 | bool done = false; | |
1948 | ||
b90d6ee5 | 1949 | fat_rwlock_rdlock(&table->cls.rwlock); |
0ef165ec EJ |
1950 | rule = rule_from_cls_rule(classifier_find_match_exactly(&table->cls, |
1951 | &fm->match, | |
1952 | fm->priority)); | |
b90d6ee5 JR |
1953 | if (rule) { |
1954 | /* Reading many of the rule fields and writing on 'modified' | |
1955 | * requires the rule->mutex. Also, rule->actions may change | |
1956 | * if rule->mutex is not held. */ | |
06a0f3e2 BP |
1957 | const struct rule_actions *actions; |
1958 | ||
b90d6ee5 | 1959 | ovs_mutex_lock(&rule->mutex); |
06a0f3e2 | 1960 | actions = rule_get_actions(rule); |
b90d6ee5 JR |
1961 | if (rule->idle_timeout == fm->idle_timeout |
1962 | && rule->hard_timeout == fm->hard_timeout | |
1963 | && rule->flags == (fm->flags & OFPUTIL_FF_STATE) | |
1964 | && (!fm->modify_cookie || (fm->new_cookie == rule->flow_cookie)) | |
1965 | && ofpacts_equal(fm->ofpacts, fm->ofpacts_len, | |
06a0f3e2 | 1966 | actions->ofpacts, actions->ofpacts_len)) { |
b90d6ee5 JR |
1967 | /* Rule already exists and need not change, only update the |
1968 | modified timestamp. */ | |
1969 | rule->modified = time_msec(); | |
1970 | done = true; | |
1971 | } | |
1972 | ovs_mutex_unlock(&rule->mutex); | |
1973 | } | |
1974 | fat_rwlock_unlock(&table->cls.rwlock); | |
1975 | ||
1976 | if (done) { | |
1977 | return 0; | |
1978 | } | |
1979 | } | |
1980 | ||
75a75043 BP |
1981 | return handle_flow_mod__(ofproto, NULL, fm, NULL); |
1982 | } | |
1983 | ||
6c1491fb BP |
1984 | /* Searches for a rule with matching criteria exactly equal to 'target' in |
1985 | * ofproto's table 0 and, if it finds one, deletes it. | |
1986 | * | |
1987 | * This is a helper function for in-band control and fail-open. */ | |
7ee20df1 | 1988 | bool |
81a76618 BP |
1989 | ofproto_delete_flow(struct ofproto *ofproto, |
1990 | const struct match *target, unsigned int priority) | |
15aaf599 | 1991 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 1992 | { |
8037acb4 | 1993 | struct classifier *cls = &ofproto->tables[0].cls; |
064af421 BP |
1994 | struct rule *rule; |
1995 | ||
97f63e57 BP |
1996 | /* First do a cheap check whether the rule we're looking for has already |
1997 | * been deleted. If so, then we're done. */ | |
06f81620 | 1998 | fat_rwlock_rdlock(&cls->rwlock); |
8037acb4 BP |
1999 | rule = rule_from_cls_rule(classifier_find_match_exactly(cls, target, |
2000 | priority)); | |
06f81620 | 2001 | fat_rwlock_unlock(&cls->rwlock); |
7ee20df1 | 2002 | if (!rule) { |
7ee20df1 | 2003 | return true; |
bcf84111 | 2004 | } |
5ecc9d81 | 2005 | |
97f63e57 BP |
2006 | /* Fall back to a executing a full flow mod. We can't optimize this at all |
2007 | * because we didn't take enough locks above to ensure that the flow table | |
2008 | * didn't already change beneath us. */ | |
2009 | return simple_flow_mod(ofproto, target, priority, NULL, 0, | |
2010 | OFPFC_DELETE_STRICT) != OFPROTO_POSTPONE; | |
142e1f5c BP |
2011 | } |
2012 | ||
7ee20df1 BP |
2013 | /* Starts the process of deleting all of the flows from all of ofproto's flow |
2014 | * tables and then reintroducing the flows required by in-band control and | |
2015 | * fail-open. The process will complete in a later call to ofproto_run(). */ | |
142e1f5c BP |
2016 | void |
2017 | ofproto_flush_flows(struct ofproto *ofproto) | |
2018 | { | |
7ee20df1 BP |
2019 | COVERAGE_INC(ofproto_flush); |
2020 | ofproto->state = S_FLUSH; | |
064af421 BP |
2021 | } |
2022 | \f | |
2023 | static void | |
2024 | reinit_ports(struct ofproto *p) | |
2025 | { | |
abe529af | 2026 | struct ofproto_port_dump dump; |
b3c01ed3 | 2027 | struct sset devnames; |
064af421 | 2028 | struct ofport *ofport; |
abe529af | 2029 | struct ofproto_port ofproto_port; |
b3c01ed3 | 2030 | const char *devname; |
064af421 | 2031 | |
898bf89d JP |
2032 | COVERAGE_INC(ofproto_reinit_ports); |
2033 | ||
b3c01ed3 | 2034 | sset_init(&devnames); |
4e8e4213 | 2035 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { |
1264ec95 | 2036 | sset_add(&devnames, netdev_get_name(ofport->netdev)); |
064af421 | 2037 | } |
abe529af BP |
2038 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { |
2039 | sset_add(&devnames, ofproto_port.name); | |
064af421 | 2040 | } |
064af421 | 2041 | |
b3c01ed3 BP |
2042 | SSET_FOR_EACH (devname, &devnames) { |
2043 | update_port(p, devname); | |
064af421 | 2044 | } |
b3c01ed3 | 2045 | sset_destroy(&devnames); |
064af421 BP |
2046 | } |
2047 | ||
4e022ec0 | 2048 | static ofp_port_t |
e1b1d06a JP |
2049 | alloc_ofp_port(struct ofproto *ofproto, const char *netdev_name) |
2050 | { | |
4e022ec0 | 2051 | uint16_t port_idx; |
e1b1d06a | 2052 | |
4e022ec0 | 2053 | port_idx = simap_get(&ofproto->ofp_requests, netdev_name); |
430dbb14 | 2054 | port_idx = port_idx ? port_idx : UINT16_MAX; |
4e022ec0 | 2055 | |
430dbb14 | 2056 | if (port_idx >= ofproto->max_ports |
fdcea803 GS |
2057 | || ofport_get_usage(ofproto, u16_to_ofp(port_idx)) == LLONG_MAX) { |
2058 | uint16_t lru_ofport = 0, end_port_no = ofproto->alloc_port_no; | |
2059 | long long int last_used_at, lru = LLONG_MAX; | |
e1b1d06a | 2060 | |
e1b1d06a JP |
2061 | /* Search for a free OpenFlow port number. We try not to |
2062 | * immediately reuse them to prevent problems due to old | |
484c8355 BP |
2063 | * flows. |
2064 | * | |
2065 | * We limit the automatically assigned port numbers to the lower half | |
2066 | * of the port range, to reserve the upper half for assignment by | |
2067 | * controllers. */ | |
6033d9d9 | 2068 | for (;;) { |
484c8355 | 2069 | if (++ofproto->alloc_port_no >= MIN(ofproto->max_ports, 32768)) { |
fdcea803 | 2070 | ofproto->alloc_port_no = 1; |
6033d9d9 | 2071 | } |
fdcea803 GS |
2072 | last_used_at = ofport_get_usage(ofproto, |
2073 | u16_to_ofp(ofproto->alloc_port_no)); | |
2074 | if (!last_used_at) { | |
430dbb14 | 2075 | port_idx = ofproto->alloc_port_no; |
6033d9d9 | 2076 | break; |
865b26a4 GS |
2077 | } else if ( last_used_at < time_msec() - 60*60*1000) { |
2078 | /* If the port with ofport 'ofproto->alloc_port_no' was deleted | |
2079 | * more than an hour ago, consider it usable. */ | |
2080 | ofport_remove_usage(ofproto, | |
2081 | u16_to_ofp(ofproto->alloc_port_no)); | |
2082 | port_idx = ofproto->alloc_port_no; | |
2083 | break; | |
fdcea803 GS |
2084 | } else if (last_used_at < lru) { |
2085 | lru = last_used_at; | |
2086 | lru_ofport = ofproto->alloc_port_no; | |
e1b1d06a | 2087 | } |
fdcea803 | 2088 | |
430dbb14 | 2089 | if (ofproto->alloc_port_no == end_port_no) { |
fdcea803 GS |
2090 | if (lru_ofport) { |
2091 | port_idx = lru_ofport; | |
2092 | break; | |
2093 | } | |
6033d9d9 | 2094 | return OFPP_NONE; |
e1b1d06a JP |
2095 | } |
2096 | } | |
2097 | } | |
fdcea803 | 2098 | ofport_set_usage(ofproto, u16_to_ofp(port_idx), LLONG_MAX); |
4e022ec0 | 2099 | return u16_to_ofp(port_idx); |
e1b1d06a JP |
2100 | } |
2101 | ||
2102 | static void | |
fdcea803 | 2103 | dealloc_ofp_port(struct ofproto *ofproto, ofp_port_t ofp_port) |
e1b1d06a | 2104 | { |
430dbb14 | 2105 | if (ofp_to_u16(ofp_port) < ofproto->max_ports) { |
fdcea803 | 2106 | ofport_set_usage(ofproto, ofp_port, time_msec()); |
40fa9417 | 2107 | } |
e1b1d06a JP |
2108 | } |
2109 | ||
fbfa2911 BP |
2110 | /* Opens and returns a netdev for 'ofproto_port' in 'ofproto', or a null |
2111 | * pointer if the netdev cannot be opened. On success, also fills in | |
d7d92203 | 2112 | * '*pp'. */ |
b33951b8 | 2113 | static struct netdev * |
e1b1d06a JP |
2114 | ofport_open(struct ofproto *ofproto, |
2115 | struct ofproto_port *ofproto_port, | |
9e1fd49b | 2116 | struct ofputil_phy_port *pp) |
064af421 BP |
2117 | { |
2118 | enum netdev_flags flags; | |
064af421 | 2119 | struct netdev *netdev; |
064af421 BP |
2120 | int error; |
2121 | ||
18812dff | 2122 | error = netdev_open(ofproto_port->name, ofproto_port->type, &netdev); |
064af421 | 2123 | if (error) { |
fbfa2911 | 2124 | VLOG_WARN_RL(&rl, "%s: ignoring port %s (%"PRIu16") because netdev %s " |
064af421 | 2125 | "cannot be opened (%s)", |
fbfa2911 | 2126 | ofproto->name, |
abe529af | 2127 | ofproto_port->name, ofproto_port->ofp_port, |
10a89ef0 | 2128 | ofproto_port->name, ovs_strerror(error)); |
064af421 BP |
2129 | return NULL; |
2130 | } | |
2131 | ||
e1b1d06a JP |
2132 | if (ofproto_port->ofp_port == OFPP_NONE) { |
2133 | if (!strcmp(ofproto->name, ofproto_port->name)) { | |
2134 | ofproto_port->ofp_port = OFPP_LOCAL; | |
2135 | } else { | |
2136 | ofproto_port->ofp_port = alloc_ofp_port(ofproto, | |
2137 | ofproto_port->name); | |
2138 | } | |
2139 | } | |
9e1fd49b BP |
2140 | pp->port_no = ofproto_port->ofp_port; |
2141 | netdev_get_etheraddr(netdev, pp->hw_addr); | |
2142 | ovs_strlcpy(pp->name, ofproto_port->name, sizeof pp->name); | |
064af421 | 2143 | netdev_get_flags(netdev, &flags); |
9e1fd49b BP |
2144 | pp->config = flags & NETDEV_UP ? 0 : OFPUTIL_PC_PORT_DOWN; |
2145 | pp->state = netdev_get_carrier(netdev) ? 0 : OFPUTIL_PS_LINK_DOWN; | |
2146 | netdev_get_features(netdev, &pp->curr, &pp->advertised, | |
2147 | &pp->supported, &pp->peer); | |
cd65125d BP |
2148 | pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000; |
2149 | pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000; | |
118c4676 | 2150 | |
b33951b8 | 2151 | return netdev; |
064af421 BP |
2152 | } |
2153 | ||
b33951b8 | 2154 | /* Returns true if most fields of 'a' and 'b' are equal. Differences in name, |
d7d92203 | 2155 | * port number, and 'config' bits other than OFPUTIL_PC_PORT_DOWN are |
b33951b8 BP |
2156 | * disregarded. */ |
2157 | static bool | |
9e1fd49b BP |
2158 | ofport_equal(const struct ofputil_phy_port *a, |
2159 | const struct ofputil_phy_port *b) | |
064af421 | 2160 | { |
9e1fd49b | 2161 | return (eth_addr_equals(a->hw_addr, b->hw_addr) |
064af421 | 2162 | && a->state == b->state |
9e1fd49b | 2163 | && !((a->config ^ b->config) & OFPUTIL_PC_PORT_DOWN) |
064af421 BP |
2164 | && a->curr == b->curr |
2165 | && a->advertised == b->advertised | |
2166 | && a->supported == b->supported | |
9e1fd49b BP |
2167 | && a->peer == b->peer |
2168 | && a->curr_speed == b->curr_speed | |
2169 | && a->max_speed == b->max_speed); | |
064af421 BP |
2170 | } |
2171 | ||
b33951b8 BP |
2172 | /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'. |
2173 | * The caller must ensure that 'p' does not have a conflicting ofport (that is, | |
2174 | * one with the same name or port number). */ | |
064af421 | 2175 | static void |
b33951b8 | 2176 | ofport_install(struct ofproto *p, |
9e1fd49b | 2177 | struct netdev *netdev, const struct ofputil_phy_port *pp) |
064af421 | 2178 | { |
b33951b8 BP |
2179 | const char *netdev_name = netdev_get_name(netdev); |
2180 | struct ofport *ofport; | |
abe529af | 2181 | int error; |
72b06300 | 2182 | |
b33951b8 | 2183 | /* Create ofport. */ |
abe529af BP |
2184 | ofport = p->ofproto_class->port_alloc(); |
2185 | if (!ofport) { | |
2186 | error = ENOMEM; | |
2187 | goto error; | |
2188 | } | |
0f7d71a5 | 2189 | ofport->ofproto = p; |
b33951b8 | 2190 | ofport->netdev = netdev; |
61501798 | 2191 | ofport->change_seq = netdev_get_change_seq(netdev); |
9e1fd49b BP |
2192 | ofport->pp = *pp; |
2193 | ofport->ofp_port = pp->port_no; | |
65e0be10 | 2194 | ofport->created = time_msec(); |
b33951b8 BP |
2195 | |
2196 | /* Add port to 'p'. */ | |
4e022ec0 | 2197 | hmap_insert(&p->ports, &ofport->hmap_node, |
f9c0c3ec | 2198 | hash_ofp_port(ofport->ofp_port)); |
72b06300 | 2199 | shash_add(&p->port_by_name, netdev_name, ofport); |
abe529af | 2200 | |
ada3428f | 2201 | update_mtu(p, ofport); |
9197df76 | 2202 | |
abe529af BP |
2203 | /* Let the ofproto_class initialize its private data. */ |
2204 | error = p->ofproto_class->port_construct(ofport); | |
2205 | if (error) { | |
2206 | goto error; | |
2207 | } | |
2a6f78e0 | 2208 | connmgr_send_port_status(p->connmgr, NULL, pp, OFPPR_ADD); |
abe529af BP |
2209 | return; |
2210 | ||
2211 | error: | |
2212 | VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)", | |
10a89ef0 | 2213 | p->name, netdev_name, ovs_strerror(error)); |
abe529af BP |
2214 | if (ofport) { |
2215 | ofport_destroy__(ofport); | |
2216 | } else { | |
2217 | netdev_close(netdev); | |
72b06300 | 2218 | } |
064af421 BP |
2219 | } |
2220 | ||
b33951b8 | 2221 | /* Removes 'ofport' from 'p' and destroys it. */ |
064af421 | 2222 | static void |
0f7d71a5 | 2223 | ofport_remove(struct ofport *ofport) |
064af421 | 2224 | { |
2a6f78e0 | 2225 | connmgr_send_port_status(ofport->ofproto->connmgr, NULL, &ofport->pp, |
fa066f01 | 2226 | OFPPR_DELETE); |
abe529af | 2227 | ofport_destroy(ofport); |
b33951b8 BP |
2228 | } |
2229 | ||
2230 | /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and | |
2231 | * destroys it. */ | |
2232 | static void | |
2233 | ofport_remove_with_name(struct ofproto *ofproto, const char *name) | |
2234 | { | |
2235 | struct ofport *port = shash_find_data(&ofproto->port_by_name, name); | |
2236 | if (port) { | |
0f7d71a5 | 2237 | ofport_remove(port); |
b33951b8 BP |
2238 | } |
2239 | } | |
2240 | ||
9e1fd49b | 2241 | /* Updates 'port' with new 'pp' description. |
b33951b8 BP |
2242 | * |
2243 | * Does not handle a name or port number change. The caller must implement | |
2244 | * such a change as a delete followed by an add. */ | |
2245 | static void | |
9e1fd49b | 2246 | ofport_modified(struct ofport *port, struct ofputil_phy_port *pp) |
b33951b8 | 2247 | { |
9e1fd49b BP |
2248 | memcpy(port->pp.hw_addr, pp->hw_addr, ETH_ADDR_LEN); |
2249 | port->pp.config = ((port->pp.config & ~OFPUTIL_PC_PORT_DOWN) | |
2250 | | (pp->config & OFPUTIL_PC_PORT_DOWN)); | |
53fd5c7c BP |
2251 | port->pp.state = ((port->pp.state & ~OFPUTIL_PS_LINK_DOWN) |
2252 | | (pp->state & OFPUTIL_PS_LINK_DOWN)); | |
9e1fd49b BP |
2253 | port->pp.curr = pp->curr; |
2254 | port->pp.advertised = pp->advertised; | |
2255 | port->pp.supported = pp->supported; | |
2256 | port->pp.peer = pp->peer; | |
2257 | port->pp.curr_speed = pp->curr_speed; | |
2258 | port->pp.max_speed = pp->max_speed; | |
b33951b8 | 2259 | |
2a6f78e0 BP |
2260 | connmgr_send_port_status(port->ofproto->connmgr, NULL, |
2261 | &port->pp, OFPPR_MODIFY); | |
064af421 BP |
2262 | } |
2263 | ||
5a2dfd47 JP |
2264 | /* Update OpenFlow 'state' in 'port' and notify controller. */ |
2265 | void | |
9e1fd49b | 2266 | ofproto_port_set_state(struct ofport *port, enum ofputil_port_state state) |
5a2dfd47 | 2267 | { |
9e1fd49b BP |
2268 | if (port->pp.state != state) { |
2269 | port->pp.state = state; | |
2a6f78e0 BP |
2270 | connmgr_send_port_status(port->ofproto->connmgr, NULL, |
2271 | &port->pp, OFPPR_MODIFY); | |
5a2dfd47 JP |
2272 | } |
2273 | } | |
2274 | ||
abe529af | 2275 | void |
4e022ec0 | 2276 | ofproto_port_unregister(struct ofproto *ofproto, ofp_port_t ofp_port) |
e7934396 | 2277 | { |
abe529af BP |
2278 | struct ofport *port = ofproto_get_port(ofproto, ofp_port); |
2279 | if (port) { | |
52a90c29 BP |
2280 | if (port->ofproto->ofproto_class->set_realdev) { |
2281 | port->ofproto->ofproto_class->set_realdev(port, 0, 0); | |
2282 | } | |
b308140a JP |
2283 | if (port->ofproto->ofproto_class->set_stp_port) { |
2284 | port->ofproto->ofproto_class->set_stp_port(port, NULL); | |
2285 | } | |
abe529af | 2286 | if (port->ofproto->ofproto_class->set_cfm) { |
a5610457 | 2287 | port->ofproto->ofproto_class->set_cfm(port, NULL); |
abe529af BP |
2288 | } |
2289 | if (port->ofproto->ofproto_class->bundle_remove) { | |
2290 | port->ofproto->ofproto_class->bundle_remove(port); | |
e7934396 BP |
2291 | } |
2292 | } | |
2293 | } | |
2294 | ||
2295 | static void | |
abe529af | 2296 | ofport_destroy__(struct ofport *port) |
e7934396 | 2297 | { |
abe529af BP |
2298 | struct ofproto *ofproto = port->ofproto; |
2299 | const char *name = netdev_get_name(port->netdev); | |
fa066f01 | 2300 | |
abe529af BP |
2301 | hmap_remove(&ofproto->ports, &port->hmap_node); |
2302 | shash_delete(&ofproto->port_by_name, | |
2303 | shash_find(&ofproto->port_by_name, name)); | |
fa066f01 | 2304 | |
abe529af BP |
2305 | netdev_close(port->netdev); |
2306 | ofproto->ofproto_class->port_dealloc(port); | |
e7934396 BP |
2307 | } |
2308 | ||
064af421 | 2309 | static void |
abe529af | 2310 | ofport_destroy(struct ofport *port) |
064af421 | 2311 | { |
fa066f01 | 2312 | if (port) { |
e1b1d06a | 2313 | dealloc_ofp_port(port->ofproto, port->ofp_port); |
abe529af BP |
2314 | port->ofproto->ofproto_class->port_destruct(port); |
2315 | ofport_destroy__(port); | |
2316 | } | |
064af421 BP |
2317 | } |
2318 | ||
abe529af | 2319 | struct ofport * |
4e022ec0 | 2320 | ofproto_get_port(const struct ofproto *ofproto, ofp_port_t ofp_port) |
ca0f572c BP |
2321 | { |
2322 | struct ofport *port; | |
2323 | ||
f9c0c3ec | 2324 | HMAP_FOR_EACH_IN_BUCKET (port, hmap_node, hash_ofp_port(ofp_port), |
4e022ec0 | 2325 | &ofproto->ports) { |
abe529af | 2326 | if (port->ofp_port == ofp_port) { |
ca0f572c BP |
2327 | return port; |
2328 | } | |
2329 | } | |
2330 | return NULL; | |
2331 | } | |
2332 | ||
fdcea803 GS |
2333 | static long long int |
2334 | ofport_get_usage(const struct ofproto *ofproto, ofp_port_t ofp_port) | |
2335 | { | |
2336 | struct ofport_usage *usage; | |
2337 | ||
2338 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2339 | &ofproto->ofport_usage) { | |
2340 | if (usage->ofp_port == ofp_port) { | |
2341 | return usage->last_used; | |
2342 | } | |
2343 | } | |
2344 | return 0; | |
2345 | } | |
2346 | ||
2347 | static void | |
2348 | ofport_set_usage(struct ofproto *ofproto, ofp_port_t ofp_port, | |
2349 | long long int last_used) | |
2350 | { | |
2351 | struct ofport_usage *usage; | |
2352 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2353 | &ofproto->ofport_usage) { | |
2354 | if (usage->ofp_port == ofp_port) { | |
2355 | usage->last_used = last_used; | |
2356 | return; | |
2357 | } | |
2358 | } | |
2359 | ovs_assert(last_used == LLONG_MAX); | |
2360 | ||
2361 | usage = xmalloc(sizeof *usage); | |
2362 | usage->ofp_port = ofp_port; | |
2363 | usage->last_used = last_used; | |
2364 | hmap_insert(&ofproto->ofport_usage, &usage->hmap_node, | |
2365 | hash_ofp_port(ofp_port)); | |
2366 | } | |
2367 | ||
865b26a4 GS |
2368 | static void |
2369 | ofport_remove_usage(struct ofproto *ofproto, ofp_port_t ofp_port) | |
2370 | { | |
2371 | struct ofport_usage *usage; | |
2372 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2373 | &ofproto->ofport_usage) { | |
2374 | if (usage->ofp_port == ofp_port) { | |
2375 | hmap_remove(&ofproto->ofport_usage, &usage->hmap_node); | |
2376 | free(usage); | |
2377 | break; | |
2378 | } | |
2379 | } | |
2380 | } | |
2381 | ||
6527c598 PS |
2382 | int |
2383 | ofproto_port_get_stats(const struct ofport *port, struct netdev_stats *stats) | |
2384 | { | |
2385 | struct ofproto *ofproto = port->ofproto; | |
2386 | int error; | |
2387 | ||
2388 | if (ofproto->ofproto_class->port_get_stats) { | |
2389 | error = ofproto->ofproto_class->port_get_stats(port, stats); | |
2390 | } else { | |
2391 | error = EOPNOTSUPP; | |
2392 | } | |
2393 | ||
2394 | return error; | |
2395 | } | |
2396 | ||
064af421 | 2397 | static void |
b33951b8 | 2398 | update_port(struct ofproto *ofproto, const char *name) |
064af421 | 2399 | { |
abe529af | 2400 | struct ofproto_port ofproto_port; |
9e1fd49b | 2401 | struct ofputil_phy_port pp; |
b33951b8 BP |
2402 | struct netdev *netdev; |
2403 | struct ofport *port; | |
064af421 BP |
2404 | |
2405 | COVERAGE_INC(ofproto_update_port); | |
c874dc6d | 2406 | |
b33951b8 | 2407 | /* Fetch 'name''s location and properties from the datapath. */ |
abe529af | 2408 | netdev = (!ofproto_port_query_by_name(ofproto, name, &ofproto_port) |
fbfa2911 | 2409 | ? ofport_open(ofproto, &ofproto_port, &pp) |
b33951b8 | 2410 | : NULL); |
4e022ec0 | 2411 | |
b33951b8 | 2412 | if (netdev) { |
abe529af | 2413 | port = ofproto_get_port(ofproto, ofproto_port.ofp_port); |
b33951b8 | 2414 | if (port && !strcmp(netdev_get_name(port->netdev), name)) { |
e65942a0 BP |
2415 | struct netdev *old_netdev = port->netdev; |
2416 | ||
b33951b8 | 2417 | /* 'name' hasn't changed location. Any properties changed? */ |
9e1fd49b BP |
2418 | if (!ofport_equal(&port->pp, &pp)) { |
2419 | ofport_modified(port, &pp); | |
abe529af BP |
2420 | } |
2421 | ||
ada3428f | 2422 | update_mtu(ofproto, port); |
9197df76 | 2423 | |
e65942a0 BP |
2424 | /* Install the newly opened netdev in case it has changed. |
2425 | * Don't close the old netdev yet in case port_modified has to | |
2426 | * remove a retained reference to it.*/ | |
abe529af | 2427 | port->netdev = netdev; |
61501798 | 2428 | port->change_seq = netdev_get_change_seq(netdev); |
abe529af BP |
2429 | |
2430 | if (port->ofproto->ofproto_class->port_modified) { | |
2431 | port->ofproto->ofproto_class->port_modified(port); | |
b33951b8 | 2432 | } |
e65942a0 BP |
2433 | |
2434 | netdev_close(old_netdev); | |
b33951b8 BP |
2435 | } else { |
2436 | /* If 'port' is nonnull then its name differs from 'name' and thus | |
2437 | * we should delete it. If we think there's a port named 'name' | |
2438 | * then its port number must be wrong now so delete it too. */ | |
2439 | if (port) { | |
0f7d71a5 | 2440 | ofport_remove(port); |
b33951b8 BP |
2441 | } |
2442 | ofport_remove_with_name(ofproto, name); | |
9e1fd49b | 2443 | ofport_install(ofproto, netdev, &pp); |
c874dc6d | 2444 | } |
b33951b8 BP |
2445 | } else { |
2446 | /* Any port named 'name' is gone now. */ | |
2447 | ofport_remove_with_name(ofproto, name); | |
c874dc6d | 2448 | } |
abe529af | 2449 | ofproto_port_destroy(&ofproto_port); |
064af421 BP |
2450 | } |
2451 | ||
2452 | static int | |
2453 | init_ports(struct ofproto *p) | |
2454 | { | |
abe529af BP |
2455 | struct ofproto_port_dump dump; |
2456 | struct ofproto_port ofproto_port; | |
e1b1d06a | 2457 | struct shash_node *node, *next; |
abe529af BP |
2458 | |
2459 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { | |
e1b1d06a JP |
2460 | const char *name = ofproto_port.name; |
2461 | ||
2462 | if (shash_find(&p->port_by_name, name)) { | |
fbfa2911 | 2463 | VLOG_WARN_RL(&rl, "%s: ignoring duplicate device %s in datapath", |
e1b1d06a | 2464 | p->name, name); |
abe529af | 2465 | } else { |
9e1fd49b | 2466 | struct ofputil_phy_port pp; |
b33951b8 BP |
2467 | struct netdev *netdev; |
2468 | ||
e1b1d06a JP |
2469 | /* Check if an OpenFlow port number had been requested. */ |
2470 | node = shash_find(&init_ofp_ports, name); | |
2471 | if (node) { | |
2472 | const struct iface_hint *iface_hint = node->data; | |
4e022ec0 AW |
2473 | simap_put(&p->ofp_requests, name, |
2474 | ofp_to_u16(iface_hint->ofp_port)); | |
e1b1d06a JP |
2475 | } |
2476 | ||
fbfa2911 | 2477 | netdev = ofport_open(p, &ofproto_port, &pp); |
b33951b8 | 2478 | if (netdev) { |
9e1fd49b | 2479 | ofport_install(p, netdev, &pp); |
430dbb14 | 2480 | if (ofp_to_u16(ofproto_port.ofp_port) < p->max_ports) { |
7c35397c | 2481 | p->alloc_port_no = MAX(p->alloc_port_no, |
430dbb14 | 2482 | ofp_to_u16(ofproto_port.ofp_port)); |
7c35397c | 2483 | } |
064af421 BP |
2484 | } |
2485 | } | |
2486 | } | |
b0ec0f27 | 2487 | |
e1b1d06a | 2488 | SHASH_FOR_EACH_SAFE(node, next, &init_ofp_ports) { |
4f9e08a5 | 2489 | struct iface_hint *iface_hint = node->data; |
e1b1d06a JP |
2490 | |
2491 | if (!strcmp(iface_hint->br_name, p->name)) { | |
2492 | free(iface_hint->br_name); | |
2493 | free(iface_hint->br_type); | |
4f9e08a5 | 2494 | free(iface_hint); |
e1b1d06a JP |
2495 | shash_delete(&init_ofp_ports, node); |
2496 | } | |
2497 | } | |
2498 | ||
064af421 BP |
2499 | return 0; |
2500 | } | |
9197df76 JP |
2501 | |
2502 | /* Find the minimum MTU of all non-datapath devices attached to 'p'. | |
2503 | * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */ | |
2504 | static int | |
2505 | find_min_mtu(struct ofproto *p) | |
2506 | { | |
2507 | struct ofport *ofport; | |
2508 | int mtu = 0; | |
2509 | ||
2510 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2511 | struct netdev *netdev = ofport->netdev; | |
2512 | int dev_mtu; | |
2513 | ||
2514 | /* Skip any internal ports, since that's what we're trying to | |
2515 | * set. */ | |
2516 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
2517 | continue; | |
2518 | } | |
2519 | ||
2520 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2521 | continue; | |
2522 | } | |
2523 | if (!mtu || dev_mtu < mtu) { | |
2524 | mtu = dev_mtu; | |
2525 | } | |
2526 | } | |
2527 | ||
2528 | return mtu ? mtu: ETH_PAYLOAD_MAX; | |
2529 | } | |
2530 | ||
ada3428f PS |
2531 | /* Update MTU of all datapath devices on 'p' to the minimum of the |
2532 | * non-datapath ports in event of 'port' added or changed. */ | |
9197df76 | 2533 | static void |
ada3428f | 2534 | update_mtu(struct ofproto *p, struct ofport *port) |
9197df76 JP |
2535 | { |
2536 | struct ofport *ofport; | |
ada3428f PS |
2537 | struct netdev *netdev = port->netdev; |
2538 | int dev_mtu, old_min; | |
2539 | ||
2540 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2541 | port->mtu = 0; | |
2542 | return; | |
2543 | } | |
2544 | if (!strcmp(netdev_get_type(port->netdev), "internal")) { | |
2545 | if (dev_mtu > p->min_mtu) { | |
2546 | if (!netdev_set_mtu(port->netdev, p->min_mtu)) { | |
2547 | dev_mtu = p->min_mtu; | |
2548 | } | |
2549 | } | |
2550 | port->mtu = dev_mtu; | |
2551 | return; | |
2552 | } | |
2553 | ||
2554 | /* For non-internal port find new min mtu. */ | |
2555 | old_min = p->min_mtu; | |
2556 | port->mtu = dev_mtu; | |
2557 | p->min_mtu = find_min_mtu(p); | |
2558 | if (p->min_mtu == old_min) { | |
2559 | return; | |
2560 | } | |
9197df76 JP |
2561 | |
2562 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2563 | struct netdev *netdev = ofport->netdev; | |
2564 | ||
2565 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
ada3428f PS |
2566 | if (!netdev_set_mtu(netdev, p->min_mtu)) { |
2567 | ofport->mtu = p->min_mtu; | |
2568 | } | |
9197df76 JP |
2569 | } |
2570 | } | |
2571 | } | |
064af421 | 2572 | \f |
f416c8d6 JR |
2573 | static void |
2574 | ofproto_rule_destroy__(struct rule *rule) | |
2575 | OVS_NO_THREAD_SAFETY_ANALYSIS | |
2576 | { | |
2577 | cls_rule_destroy(CONST_CAST(struct cls_rule *, &rule->cr)); | |
2578 | rule_actions_destroy(rule_get_actions(rule)); | |
2579 | ovs_mutex_destroy(&rule->mutex); | |
2580 | rule->ofproto->ofproto_class->rule_dealloc(rule); | |
2581 | } | |
2582 | ||
2583 | static void | |
2584 | rule_destroy_cb(struct rule *rule) | |
2585 | { | |
2586 | rule->ofproto->ofproto_class->rule_destruct(rule); | |
2587 | ofproto_rule_destroy__(rule); | |
2588 | } | |
2589 | ||
a2143702 BP |
2590 | void |
2591 | ofproto_rule_ref(struct rule *rule) | |
064af421 | 2592 | { |
1eae3d33 | 2593 | if (rule) { |
37bec3d3 | 2594 | ovs_refcount_ref(&rule->ref_count); |
a2143702 BP |
2595 | } |
2596 | } | |
2597 | ||
f416c8d6 JR |
2598 | /* Decrements 'rule''s ref_count and schedules 'rule' to be destroyed if the |
2599 | * ref_count reaches 0. | |
2600 | * | |
2601 | * Use of RCU allows short term use (between RCU quiescent periods) without | |
2602 | * keeping a reference. A reference must be taken if the rule needs to | |
2603 | * stay around accross the RCU quiescent periods. */ | |
a2143702 BP |
2604 | void |
2605 | ofproto_rule_unref(struct rule *rule) | |
2606 | { | |
37bec3d3 | 2607 | if (rule && ovs_refcount_unref(&rule->ref_count) == 1) { |
f416c8d6 | 2608 | ovsrcu_postpone(rule_destroy_cb, rule); |
1eae3d33 | 2609 | } |
064af421 BP |
2610 | } |
2611 | ||
809c7548 RW |
2612 | void |
2613 | ofproto_group_ref(struct ofgroup *group) | |
2614 | { | |
2615 | if (group) { | |
2616 | ovs_refcount_ref(&group->ref_count); | |
2617 | } | |
2618 | } | |
2619 | ||
2620 | void | |
2621 | ofproto_group_unref(struct ofgroup *group) | |
2622 | { | |
2623 | if (group && ovs_refcount_unref(&group->ref_count) == 1) { | |
2624 | group->ofproto->ofproto_class->group_destruct(group); | |
2625 | ofputil_bucket_list_destroy(&group->buckets); | |
2626 | group->ofproto->ofproto_class->group_dealloc(group); | |
2627 | } | |
2628 | } | |
2629 | ||
65efd2ab JR |
2630 | static uint32_t get_provider_meter_id(const struct ofproto *, |
2631 | uint32_t of_meter_id); | |
2632 | ||
dc723c44 JR |
2633 | /* Creates and returns a new 'struct rule_actions', whose actions are a copy |
2634 | * of from the 'ofpacts_len' bytes of 'ofpacts'. */ | |
2635 | const struct rule_actions * | |
65efd2ab JR |
2636 | rule_actions_create(const struct ofproto *ofproto, |
2637 | const struct ofpact *ofpacts, size_t ofpacts_len) | |
6f00e29b BP |
2638 | { |
2639 | struct rule_actions *actions; | |
2640 | ||
dc723c44 | 2641 | actions = xmalloc(sizeof *actions + ofpacts_len); |
6f00e29b | 2642 | actions->ofpacts_len = ofpacts_len; |
65efd2ab JR |
2643 | actions->provider_meter_id |
2644 | = get_provider_meter_id(ofproto, | |
2645 | ofpacts_get_meter(ofpacts, ofpacts_len)); | |
dc723c44 | 2646 | memcpy(actions->ofpacts, ofpacts, ofpacts_len); |
65efd2ab | 2647 | |
6f00e29b BP |
2648 | return actions; |
2649 | } | |
2650 | ||
dc723c44 | 2651 | /* Free the actions after the RCU quiescent period is reached. */ |
6f00e29b | 2652 | void |
dc723c44 | 2653 | rule_actions_destroy(const struct rule_actions *actions) |
6f00e29b | 2654 | { |
06a0f3e2 | 2655 | if (actions) { |
dc723c44 | 2656 | ovsrcu_postpone(free, CONST_CAST(struct rule_actions *, actions)); |
6f00e29b BP |
2657 | } |
2658 | } | |
2659 | ||
bcf84111 | 2660 | /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action |
f25d0cf3 | 2661 | * that outputs to 'port' (output to OFPP_FLOOD and OFPP_ALL doesn't count). */ |
74e79b7c | 2662 | static bool |
4e022ec0 | 2663 | ofproto_rule_has_out_port(const struct rule *rule, ofp_port_t port) |
15aaf599 | 2664 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 2665 | { |
06a0f3e2 BP |
2666 | if (port == OFPP_ANY) { |
2667 | return true; | |
2668 | } else { | |
2669 | const struct rule_actions *actions = rule_get_actions(rule); | |
2670 | return ofpacts_output_to_port(actions->ofpacts, | |
2671 | actions->ofpacts_len, port); | |
2672 | } | |
064af421 BP |
2673 | } |
2674 | ||
7395c052 | 2675 | /* Returns true if 'rule' has group and equals group_id. */ |
74e79b7c | 2676 | static bool |
7395c052 | 2677 | ofproto_rule_has_out_group(const struct rule *rule, uint32_t group_id) |
15aaf599 | 2678 | OVS_REQUIRES(ofproto_mutex) |
7395c052 | 2679 | { |
06a0f3e2 BP |
2680 | if (group_id == OFPG_ANY) { |
2681 | return true; | |
2682 | } else { | |
2683 | const struct rule_actions *actions = rule_get_actions(rule); | |
2684 | return ofpacts_output_to_group(actions->ofpacts, | |
2685 | actions->ofpacts_len, group_id); | |
2686 | } | |
7395c052 NZ |
2687 | } |
2688 | ||
2b07c8b1 BP |
2689 | /* Returns true if a rule related to 'op' has an OpenFlow OFPAT_OUTPUT or |
2690 | * OFPAT_ENQUEUE action that outputs to 'out_port'. */ | |
2691 | bool | |
4e022ec0 | 2692 | ofoperation_has_out_port(const struct ofoperation *op, ofp_port_t out_port) |
15aaf599 | 2693 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
2694 | { |
2695 | if (ofproto_rule_has_out_port(op->rule, out_port)) { | |
2696 | return true; | |
2697 | } | |
2698 | ||
2699 | switch (op->type) { | |
2700 | case OFOPERATION_ADD: | |
2b07c8b1 BP |
2701 | case OFOPERATION_DELETE: |
2702 | return false; | |
2703 | ||
2704 | case OFOPERATION_MODIFY: | |
b277c7cc | 2705 | case OFOPERATION_REPLACE: |
6f00e29b BP |
2706 | return ofpacts_output_to_port(op->actions->ofpacts, |
2707 | op->actions->ofpacts_len, out_port); | |
2b07c8b1 BP |
2708 | } |
2709 | ||
428b2edd | 2710 | OVS_NOT_REACHED(); |
2b07c8b1 BP |
2711 | } |
2712 | ||
35412852 BP |
2713 | static void |
2714 | rule_execute_destroy(struct rule_execute *e) | |
eedc0097 | 2715 | { |
35412852 BP |
2716 | ofproto_rule_unref(e->rule); |
2717 | list_remove(&e->list_node); | |
2718 | free(e); | |
2719 | } | |
eedc0097 | 2720 | |
35412852 BP |
2721 | /* Executes all "rule_execute" operations queued up in ofproto->rule_executes, |
2722 | * by passing them to the ofproto provider. */ | |
2723 | static void | |
2724 | run_rule_executes(struct ofproto *ofproto) | |
15aaf599 | 2725 | OVS_EXCLUDED(ofproto_mutex) |
35412852 BP |
2726 | { |
2727 | struct rule_execute *e, *next; | |
2728 | struct list executes; | |
2729 | ||
2730 | guarded_list_pop_all(&ofproto->rule_executes, &executes); | |
2731 | LIST_FOR_EACH_SAFE (e, next, list_node, &executes) { | |
35412852 BP |
2732 | struct flow flow; |
2733 | ||
b5e7e61a AZ |
2734 | flow_extract(e->packet, NULL, &flow); |
2735 | flow.in_port.ofp_port = e->in_port; | |
35412852 BP |
2736 | ofproto->ofproto_class->rule_execute(e->rule, &flow, e->packet); |
2737 | ||
2738 | rule_execute_destroy(e); | |
2739 | } | |
2740 | } | |
2741 | ||
2742 | /* Destroys and discards all "rule_execute" operations queued up in | |
2743 | * ofproto->rule_executes. */ | |
2744 | static void | |
2745 | destroy_rule_executes(struct ofproto *ofproto) | |
2746 | { | |
2747 | struct rule_execute *e, *next; | |
2748 | struct list executes; | |
2749 | ||
2750 | guarded_list_pop_all(&ofproto->rule_executes, &executes); | |
2751 | LIST_FOR_EACH_SAFE (e, next, list_node, &executes) { | |
2752 | ofpbuf_delete(e->packet); | |
2753 | rule_execute_destroy(e); | |
2754 | } | |
350a665f BP |
2755 | } |
2756 | ||
abe529af BP |
2757 | /* Returns true if 'rule' should be hidden from the controller. |
2758 | * | |
2759 | * Rules with priority higher than UINT16_MAX are set up by ofproto itself | |
2760 | * (e.g. by in-band control) and are intentionally hidden from the | |
2761 | * controller. */ | |
74e79b7c | 2762 | static bool |
2b07c8b1 | 2763 | ofproto_rule_is_hidden(const struct rule *rule) |
b6c9e612 | 2764 | { |
adcf00ba | 2765 | return (rule->cr.priority > UINT16_MAX); |
7b064a79 | 2766 | } |
5c67e4af | 2767 | |
adcf00ba AZ |
2768 | static bool |
2769 | oftable_is_modifiable(const struct oftable *table, | |
2770 | enum ofputil_flow_mod_flags flags) | |
5c67e4af | 2771 | { |
adcf00ba AZ |
2772 | if (flags & OFPUTIL_FF_NO_READONLY) { |
2773 | return true; | |
2774 | } | |
2775 | ||
2776 | return !(table->flags & OFTABLE_READONLY); | |
5c67e4af BP |
2777 | } |
2778 | ||
2779 | static bool | |
adcf00ba | 2780 | rule_is_modifiable(const struct rule *rule, enum ofputil_flow_mod_flags flags) |
5c67e4af | 2781 | { |
adcf00ba AZ |
2782 | const struct oftable *rule_table; |
2783 | ||
2784 | rule_table = &rule->ofproto->tables[rule->table_id]; | |
2785 | return oftable_is_modifiable(rule_table, flags); | |
5c67e4af | 2786 | } |
fa066f01 | 2787 | \f |
90bf1e07 | 2788 | static enum ofperr |
d1e2cf21 | 2789 | handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2790 | { |
b0421aa2 | 2791 | ofconn_send_reply(ofconn, make_echo_reply(oh)); |
064af421 | 2792 | return 0; |
064af421 BP |
2793 | } |
2794 | ||
90bf1e07 | 2795 | static enum ofperr |
d1e2cf21 | 2796 | handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2797 | { |
64ff1d96 | 2798 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
9e1fd49b | 2799 | struct ofputil_switch_features features; |
064af421 | 2800 | struct ofport *port; |
6c1491fb | 2801 | bool arp_match_ip; |
9e1fd49b | 2802 | struct ofpbuf *b; |
064af421 | 2803 | |
9e1fd49b BP |
2804 | ofproto->ofproto_class->get_features(ofproto, &arp_match_ip, |
2805 | &features.actions); | |
cb22974d | 2806 | ovs_assert(features.actions & OFPUTIL_A_OUTPUT); /* sanity check */ |
064af421 | 2807 | |
9e1fd49b BP |
2808 | features.datapath_id = ofproto->datapath_id; |
2809 | features.n_buffers = pktbuf_capacity(); | |
adcf00ba | 2810 | features.n_tables = ofproto_get_n_visible_tables(ofproto); |
9e1fd49b BP |
2811 | features.capabilities = (OFPUTIL_C_FLOW_STATS | OFPUTIL_C_TABLE_STATS | |
2812 | OFPUTIL_C_PORT_STATS | OFPUTIL_C_QUEUE_STATS); | |
6c1491fb | 2813 | if (arp_match_ip) { |
9e1fd49b | 2814 | features.capabilities |= OFPUTIL_C_ARP_MATCH_IP; |
6c1491fb | 2815 | } |
2e1ae200 JR |
2816 | /* FIXME: Fill in proper features.auxiliary_id for auxiliary connections */ |
2817 | features.auxiliary_id = 0; | |
9e1fd49b BP |
2818 | b = ofputil_encode_switch_features(&features, ofconn_get_protocol(ofconn), |
2819 | oh->xid); | |
64ff1d96 | 2820 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
9e1fd49b | 2821 | ofputil_put_switch_features_port(&port->pp, b); |
064af421 | 2822 | } |
064af421 | 2823 | |
9e1fd49b | 2824 | ofconn_send_reply(ofconn, b); |
064af421 BP |
2825 | return 0; |
2826 | } | |
064af421 | 2827 | |
90bf1e07 | 2828 | static enum ofperr |
d1e2cf21 | 2829 | handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2830 | { |
64ff1d96 | 2831 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 | 2832 | struct ofp_switch_config *osc; |
f0fd1a17 | 2833 | enum ofp_config_flags flags; |
7257b535 | 2834 | struct ofpbuf *buf; |
959a2ecd | 2835 | |
064af421 | 2836 | /* Send reply. */ |
982697a4 BP |
2837 | buf = ofpraw_alloc_reply(OFPRAW_OFPT_GET_CONFIG_REPLY, oh, 0); |
2838 | osc = ofpbuf_put_uninit(buf, sizeof *osc); | |
f0fd1a17 | 2839 | flags = ofproto->frag_handling; |
2e1ae200 JR |
2840 | /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */ |
2841 | if (oh->version < OFP13_VERSION | |
2842 | && ofconn_get_invalid_ttl_to_controller(ofconn)) { | |
f0fd1a17 PS |
2843 | flags |= OFPC_INVALID_TTL_TO_CONTROLLER; |
2844 | } | |
2845 | osc->flags = htons(flags); | |
810605a2 | 2846 | osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn)); |
b0421aa2 | 2847 | ofconn_send_reply(ofconn, buf); |
2d70a31a | 2848 | |
064af421 BP |
2849 | return 0; |
2850 | } | |
064af421 | 2851 | |
90bf1e07 | 2852 | static enum ofperr |
982697a4 | 2853 | handle_set_config(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2854 | { |
982697a4 | 2855 | const struct ofp_switch_config *osc = ofpmsg_body(oh); |
64ff1d96 | 2856 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
d1e2cf21 | 2857 | uint16_t flags = ntohs(osc->flags); |
2d70a31a | 2858 | |
7257b535 | 2859 | if (ofconn_get_type(ofconn) != OFCONN_PRIMARY |
f4f1ea7e | 2860 | || ofconn_get_role(ofconn) != OFPCR12_ROLE_SLAVE) { |
7257b535 BP |
2861 | enum ofp_config_flags cur = ofproto->frag_handling; |
2862 | enum ofp_config_flags next = flags & OFPC_FRAG_MASK; | |
2863 | ||
cb22974d | 2864 | ovs_assert((cur & OFPC_FRAG_MASK) == cur); |
7257b535 BP |
2865 | if (cur != next) { |
2866 | if (ofproto->ofproto_class->set_frag_handling(ofproto, next)) { | |
2867 | ofproto->frag_handling = next; | |
2868 | } else { | |
2869 | VLOG_WARN_RL(&rl, "%s: unsupported fragment handling mode %s", | |
2870 | ofproto->name, | |
2871 | ofputil_frag_handling_to_string(next)); | |
2872 | } | |
064af421 BP |
2873 | } |
2874 | } | |
2e1ae200 | 2875 | /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */ |
f0fd1a17 | 2876 | ofconn_set_invalid_ttl_to_controller(ofconn, |
2e1ae200 JR |
2877 | (oh->version < OFP13_VERSION |
2878 | && flags & OFPC_INVALID_TTL_TO_CONTROLLER)); | |
ebe482fd | 2879 | |
810605a2 | 2880 | ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len)); |
0ad9b732 | 2881 | |
064af421 | 2882 | return 0; |
064af421 BP |
2883 | } |
2884 | ||
9deba63b | 2885 | /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow |
90bf1e07 BP |
2886 | * error message code for the caller to propagate upward. Otherwise, returns |
2887 | * 0. | |
2888 | * | |
2889 | * The log message mentions 'msg_type'. */ | |
2890 | static enum ofperr | |
2891 | reject_slave_controller(struct ofconn *ofconn) | |
9deba63b | 2892 | { |
1ce0a5fa | 2893 | if (ofconn_get_type(ofconn) == OFCONN_PRIMARY |
f4f1ea7e | 2894 | && ofconn_get_role(ofconn) == OFPCR12_ROLE_SLAVE) { |
90bf1e07 | 2895 | return OFPERR_OFPBRC_EPERM; |
9deba63b BP |
2896 | } else { |
2897 | return 0; | |
2898 | } | |
2899 | } | |
2900 | ||
7e9f8266 BP |
2901 | /* Checks that the 'ofpacts_len' bytes of action in 'ofpacts' are appropriate |
2902 | * for 'ofproto': | |
2903 | * | |
2904 | * - If they use a meter, then 'ofproto' has that meter configured. | |
2905 | * | |
2906 | * - If they use any groups, then 'ofproto' has that group configured. | |
2907 | * | |
2908 | * Returns 0 if successful, otherwise an OpenFlow error. */ | |
9cae45dc JR |
2909 | static enum ofperr |
2910 | ofproto_check_ofpacts(struct ofproto *ofproto, | |
7e9f8266 | 2911 | const struct ofpact ofpacts[], size_t ofpacts_len) |
9cae45dc | 2912 | { |
84d68566 | 2913 | const struct ofpact *a; |
9cae45dc JR |
2914 | uint32_t mid; |
2915 | ||
7e9f8266 BP |
2916 | mid = ofpacts_get_meter(ofpacts, ofpacts_len); |
2917 | if (mid && get_provider_meter_id(ofproto, mid) == UINT32_MAX) { | |
2918 | return OFPERR_OFPMMFC_INVALID_METER; | |
9cae45dc JR |
2919 | } |
2920 | ||
84d68566 | 2921 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
7e9f8266 BP |
2922 | if (a->type == OFPACT_GROUP |
2923 | && !ofproto_group_exists(ofproto, ofpact_get_GROUP(a)->group_id)) { | |
2924 | return OFPERR_OFPBAC_BAD_OUT_GROUP; | |
84d68566 SH |
2925 | } |
2926 | } | |
2927 | ||
9cae45dc JR |
2928 | return 0; |
2929 | } | |
2930 | ||
90bf1e07 | 2931 | static enum ofperr |
982697a4 | 2932 | handle_packet_out(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2933 | { |
64ff1d96 | 2934 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
c6a93eb7 BP |
2935 | struct ofputil_packet_out po; |
2936 | struct ofpbuf *payload; | |
f25d0cf3 BP |
2937 | uint64_t ofpacts_stub[1024 / 8]; |
2938 | struct ofpbuf ofpacts; | |
ae412e7d | 2939 | struct flow flow; |
90bf1e07 | 2940 | enum ofperr error; |
064af421 | 2941 | |
ac51afaf BP |
2942 | COVERAGE_INC(ofproto_packet_out); |
2943 | ||
76589937 | 2944 | error = reject_slave_controller(ofconn); |
9deba63b | 2945 | if (error) { |
f25d0cf3 | 2946 | goto exit; |
9deba63b BP |
2947 | } |
2948 | ||
c6a93eb7 | 2949 | /* Decode message. */ |
f25d0cf3 | 2950 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
982697a4 | 2951 | error = ofputil_decode_packet_out(&po, oh, &ofpacts); |
064af421 | 2952 | if (error) { |
f25d0cf3 | 2953 | goto exit_free_ofpacts; |
064af421 | 2954 | } |
430dbb14 | 2955 | if (ofp_to_u16(po.in_port) >= p->max_ports |
4e022ec0 | 2956 | && ofp_to_u16(po.in_port) < ofp_to_u16(OFPP_MAX)) { |
2e1bfcb6 | 2957 | error = OFPERR_OFPBRC_BAD_PORT; |
91858960 BP |
2958 | goto exit_free_ofpacts; |
2959 | } | |
064af421 | 2960 | |
ac51afaf | 2961 | /* Get payload. */ |
c6a93eb7 BP |
2962 | if (po.buffer_id != UINT32_MAX) { |
2963 | error = ofconn_pktbuf_retrieve(ofconn, po.buffer_id, &payload, NULL); | |
2964 | if (error || !payload) { | |
f25d0cf3 | 2965 | goto exit_free_ofpacts; |
064af421 | 2966 | } |
064af421 | 2967 | } else { |
bb622f82 BP |
2968 | /* Ensure that the L3 header is 32-bit aligned. */ |
2969 | payload = ofpbuf_clone_data_with_headroom(po.packet, po.packet_len, 2); | |
e1154f71 BP |
2970 | } |
2971 | ||
548de4dd | 2972 | /* Verify actions against packet, then send packet if successful. */ |
b5e7e61a AZ |
2973 | flow_extract(payload, NULL, &flow); |
2974 | flow.in_port.ofp_port = po.in_port; | |
7e9f8266 | 2975 | error = ofproto_check_ofpacts(p, po.ofpacts, po.ofpacts_len); |
548de4dd BP |
2976 | if (!error) { |
2977 | error = p->ofproto_class->packet_out(p, payload, &flow, | |
2978 | po.ofpacts, po.ofpacts_len); | |
2979 | } | |
c6a93eb7 | 2980 | ofpbuf_delete(payload); |
abe529af | 2981 | |
f25d0cf3 BP |
2982 | exit_free_ofpacts: |
2983 | ofpbuf_uninit(&ofpacts); | |
2984 | exit: | |
abe529af | 2985 | return error; |
064af421 BP |
2986 | } |
2987 | ||
2988 | static void | |
2a6f78e0 | 2989 | update_port_config(struct ofconn *ofconn, struct ofport *port, |
9e1fd49b BP |
2990 | enum ofputil_port_config config, |
2991 | enum ofputil_port_config mask) | |
064af421 | 2992 | { |
2a6f78e0 | 2993 | enum ofputil_port_config toggle = (config ^ port->pp.config) & mask; |
abe529af | 2994 | |
2a6f78e0 BP |
2995 | if (toggle & OFPUTIL_PC_PORT_DOWN |
2996 | && (config & OFPUTIL_PC_PORT_DOWN | |
2997 | ? netdev_turn_flags_off(port->netdev, NETDEV_UP, NULL) | |
2998 | : netdev_turn_flags_on(port->netdev, NETDEV_UP, NULL))) { | |
2999 | /* We tried to bring the port up or down, but it failed, so don't | |
3000 | * update the "down" bit. */ | |
9e1fd49b | 3001 | toggle &= ~OFPUTIL_PC_PORT_DOWN; |
064af421 | 3002 | } |
abe529af | 3003 | |
2a6f78e0 BP |
3004 | if (toggle) { |
3005 | enum ofputil_port_config old_config = port->pp.config; | |
3006 | port->pp.config ^= toggle; | |
abe529af | 3007 | port->ofproto->ofproto_class->port_reconfigured(port, old_config); |
2a6f78e0 BP |
3008 | connmgr_send_port_status(port->ofproto->connmgr, ofconn, &port->pp, |
3009 | OFPPR_MODIFY); | |
064af421 BP |
3010 | } |
3011 | } | |
3012 | ||
90bf1e07 | 3013 | static enum ofperr |
d1e2cf21 | 3014 | handle_port_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 3015 | { |
64ff1d96 | 3016 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
9e1fd49b | 3017 | struct ofputil_port_mod pm; |
064af421 | 3018 | struct ofport *port; |
9e1fd49b | 3019 | enum ofperr error; |
064af421 | 3020 | |
76589937 | 3021 | error = reject_slave_controller(ofconn); |
9deba63b BP |
3022 | if (error) { |
3023 | return error; | |
3024 | } | |
064af421 | 3025 | |
18cc69d9 | 3026 | error = ofputil_decode_port_mod(oh, &pm, false); |
9e1fd49b BP |
3027 | if (error) { |
3028 | return error; | |
3029 | } | |
3030 | ||
3031 | port = ofproto_get_port(p, pm.port_no); | |
064af421 | 3032 | if (!port) { |
90bf1e07 | 3033 | return OFPERR_OFPPMFC_BAD_PORT; |
9e1fd49b | 3034 | } else if (!eth_addr_equals(port->pp.hw_addr, pm.hw_addr)) { |
90bf1e07 | 3035 | return OFPERR_OFPPMFC_BAD_HW_ADDR; |
064af421 | 3036 | } else { |
2a6f78e0 | 3037 | update_port_config(ofconn, port, pm.config, pm.mask); |
9e1fd49b BP |
3038 | if (pm.advertise) { |
3039 | netdev_set_advertisements(port->netdev, pm.advertise); | |
064af421 BP |
3040 | } |
3041 | } | |
3042 | return 0; | |
3043 | } | |
3044 | ||
90bf1e07 | 3045 | static enum ofperr |
3269c562 | 3046 | handle_desc_stats_request(struct ofconn *ofconn, |
982697a4 | 3047 | const struct ofp_header *request) |
064af421 | 3048 | { |
061bfea4 BP |
3049 | static const char *default_mfr_desc = "Nicira, Inc."; |
3050 | static const char *default_hw_desc = "Open vSwitch"; | |
3051 | static const char *default_sw_desc = VERSION; | |
3052 | static const char *default_serial_desc = "None"; | |
3053 | static const char *default_dp_desc = "None"; | |
3054 | ||
64ff1d96 | 3055 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 BP |
3056 | struct ofp_desc_stats *ods; |
3057 | struct ofpbuf *msg; | |
3058 | ||
982697a4 BP |
3059 | msg = ofpraw_alloc_stats_reply(request, 0); |
3060 | ods = ofpbuf_put_zeros(msg, sizeof *ods); | |
061bfea4 BP |
3061 | ovs_strlcpy(ods->mfr_desc, p->mfr_desc ? p->mfr_desc : default_mfr_desc, |
3062 | sizeof ods->mfr_desc); | |
3063 | ovs_strlcpy(ods->hw_desc, p->hw_desc ? p->hw_desc : default_hw_desc, | |
3064 | sizeof ods->hw_desc); | |
3065 | ovs_strlcpy(ods->sw_desc, p->sw_desc ? p->sw_desc : default_sw_desc, | |
3066 | sizeof ods->sw_desc); | |
3067 | ovs_strlcpy(ods->serial_num, | |
3068 | p->serial_desc ? p->serial_desc : default_serial_desc, | |
3069 | sizeof ods->serial_num); | |
3070 | ovs_strlcpy(ods->dp_desc, p->dp_desc ? p->dp_desc : default_dp_desc, | |
3071 | sizeof ods->dp_desc); | |
b0421aa2 | 3072 | ofconn_send_reply(ofconn, msg); |
064af421 BP |
3073 | |
3074 | return 0; | |
3075 | } | |
3076 | ||
90bf1e07 | 3077 | static enum ofperr |
3269c562 | 3078 | handle_table_stats_request(struct ofconn *ofconn, |
982697a4 | 3079 | const struct ofp_header *request) |
064af421 | 3080 | { |
64ff1d96 | 3081 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
307975da | 3082 | struct ofp12_table_stats *ots; |
064af421 | 3083 | struct ofpbuf *msg; |
c2f0373a | 3084 | int n_tables; |
6c1491fb | 3085 | size_t i; |
064af421 | 3086 | |
307975da SH |
3087 | /* Set up default values. |
3088 | * | |
3089 | * ofp12_table_stats is used as a generic structure as | |
3090 | * it is able to hold all the fields for ofp10_table_stats | |
3091 | * and ofp11_table_stats (and of course itself). | |
3092 | */ | |
3093 | ots = xcalloc(p->n_tables, sizeof *ots); | |
6c1491fb BP |
3094 | for (i = 0; i < p->n_tables; i++) { |
3095 | ots[i].table_id = i; | |
34582733 | 3096 | sprintf(ots[i].name, "table%"PRIuSIZE, i); |
6240624b BP |
3097 | ots[i].match = htonll(OFPXMT13_MASK); |
3098 | ots[i].wildcards = htonll(OFPXMT13_MASK); | |
e78b61f6 BP |
3099 | ots[i].write_actions = htonl(OFPAT11_OUTPUT); |
3100 | ots[i].apply_actions = htonl(OFPAT11_OUTPUT); | |
6240624b BP |
3101 | ots[i].write_setfields = htonll(OFPXMT13_MASK); |
3102 | ots[i].apply_setfields = htonll(OFPXMT13_MASK); | |
b8266395 BP |
3103 | ots[i].metadata_match = OVS_BE64_MAX; |
3104 | ots[i].metadata_write = OVS_BE64_MAX; | |
307975da SH |
3105 | ots[i].instructions = htonl(OFPIT11_ALL); |
3106 | ots[i].config = htonl(OFPTC11_TABLE_MISS_MASK); | |
6c1491fb | 3107 | ots[i].max_entries = htonl(1000000); /* An arbitrary big number. */ |
06f81620 | 3108 | fat_rwlock_rdlock(&p->tables[i].cls.rwlock); |
d0918789 | 3109 | ots[i].active_count = htonl(classifier_count(&p->tables[i].cls)); |
06f81620 | 3110 | fat_rwlock_unlock(&p->tables[i].cls.rwlock); |
6c1491fb | 3111 | } |
064af421 | 3112 | |
6c1491fb | 3113 | p->ofproto_class->get_tables(p, ots); |
064af421 | 3114 | |
c2f0373a BP |
3115 | /* Post-process the tables, dropping hidden tables. */ |
3116 | n_tables = p->n_tables; | |
254750ce BP |
3117 | for (i = 0; i < p->n_tables; i++) { |
3118 | const struct oftable *table = &p->tables[i]; | |
3119 | ||
c2f0373a BP |
3120 | if (table->flags & OFTABLE_HIDDEN) { |
3121 | n_tables = i; | |
3122 | break; | |
3123 | } | |
3124 | ||
254750ce BP |
3125 | if (table->name) { |
3126 | ovs_strzcpy(ots[i].name, table->name, sizeof ots[i].name); | |
3127 | } | |
3128 | ||
3129 | if (table->max_flows < ntohl(ots[i].max_entries)) { | |
3130 | ots[i].max_entries = htonl(table->max_flows); | |
3131 | } | |
3132 | } | |
3133 | ||
c2f0373a | 3134 | msg = ofputil_encode_table_stats_reply(ots, n_tables, request); |
b0421aa2 | 3135 | ofconn_send_reply(ofconn, msg); |
307975da SH |
3136 | |
3137 | free(ots); | |
3138 | ||
064af421 BP |
3139 | return 0; |
3140 | } | |
3141 | ||
abaad8cf | 3142 | static void |
63f2140a | 3143 | append_port_stat(struct ofport *port, struct list *replies) |
abaad8cf | 3144 | { |
f8e4867e | 3145 | struct ofputil_port_stats ops = { .port_no = port->pp.port_no }; |
abaad8cf | 3146 | |
65e0be10 BP |
3147 | calc_duration(port->created, time_msec(), |
3148 | &ops.duration_sec, &ops.duration_nsec); | |
3149 | ||
d295e8e9 JP |
3150 | /* Intentionally ignore return value, since errors will set |
3151 | * 'stats' to all-1s, which is correct for OpenFlow, and | |
abaad8cf | 3152 | * netdev_get_stats() will log errors. */ |
f8e4867e SH |
3153 | ofproto_port_get_stats(port, &ops.stats); |
3154 | ||
3155 | ofputil_append_port_stat(replies, &ops); | |
abaad8cf JP |
3156 | } |
3157 | ||
70ae4f93 BP |
3158 | static void |
3159 | handle_port_request(struct ofconn *ofconn, | |
3160 | const struct ofp_header *request, ofp_port_t port_no, | |
3161 | void (*cb)(struct ofport *, struct list *replies)) | |
064af421 | 3162 | { |
70ae4f93 | 3163 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 | 3164 | struct ofport *port; |
63f2140a | 3165 | struct list replies; |
064af421 | 3166 | |
982697a4 | 3167 | ofpmp_init(&replies, request); |
7f05e7ab | 3168 | if (port_no != OFPP_ANY) { |
70ae4f93 | 3169 | port = ofproto_get_port(ofproto, port_no); |
abaad8cf | 3170 | if (port) { |
70ae4f93 | 3171 | cb(port, &replies); |
abaad8cf JP |
3172 | } |
3173 | } else { | |
70ae4f93 BP |
3174 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
3175 | cb(port, &replies); | |
abaad8cf | 3176 | } |
064af421 BP |
3177 | } |
3178 | ||
63f2140a | 3179 | ofconn_send_replies(ofconn, &replies); |
70ae4f93 BP |
3180 | } |
3181 | ||
3182 | static enum ofperr | |
3183 | handle_port_stats_request(struct ofconn *ofconn, | |
3184 | const struct ofp_header *request) | |
3185 | { | |
3186 | ofp_port_t port_no; | |
3187 | enum ofperr error; | |
3188 | ||
3189 | error = ofputil_decode_port_stats_request(request, &port_no); | |
3190 | if (!error) { | |
3191 | handle_port_request(ofconn, request, port_no, append_port_stat); | |
3192 | } | |
3193 | return error; | |
3194 | } | |
3195 | ||
3196 | static void | |
3197 | append_port_desc(struct ofport *port, struct list *replies) | |
3198 | { | |
3199 | ofputil_append_port_desc_stats_reply(&port->pp, replies); | |
064af421 BP |
3200 | } |
3201 | ||
2be393ed JP |
3202 | static enum ofperr |
3203 | handle_port_desc_stats_request(struct ofconn *ofconn, | |
982697a4 | 3204 | const struct ofp_header *request) |
2be393ed | 3205 | { |
70ae4f93 BP |
3206 | ofp_port_t port_no; |
3207 | enum ofperr error; | |
2be393ed | 3208 | |
70ae4f93 BP |
3209 | error = ofputil_decode_port_desc_stats_request(request, &port_no); |
3210 | if (!error) { | |
3211 | handle_port_request(ofconn, request, port_no, append_port_desc); | |
2be393ed | 3212 | } |
70ae4f93 | 3213 | return error; |
2be393ed JP |
3214 | } |
3215 | ||
98eaac36 JR |
3216 | static uint32_t |
3217 | hash_cookie(ovs_be64 cookie) | |
3218 | { | |
965607c8 | 3219 | return hash_uint64((OVS_FORCE uint64_t)cookie); |
98eaac36 JR |
3220 | } |
3221 | ||
3222 | static void | |
3223 | cookies_insert(struct ofproto *ofproto, struct rule *rule) | |
2c916028 | 3224 | OVS_REQUIRES(ofproto_mutex) |
98eaac36 JR |
3225 | { |
3226 | hindex_insert(&ofproto->cookies, &rule->cookie_node, | |
3227 | hash_cookie(rule->flow_cookie)); | |
3228 | } | |
3229 | ||
3230 | static void | |
3231 | cookies_remove(struct ofproto *ofproto, struct rule *rule) | |
2c916028 | 3232 | OVS_REQUIRES(ofproto_mutex) |
98eaac36 JR |
3233 | { |
3234 | hindex_remove(&ofproto->cookies, &rule->cookie_node); | |
3235 | } | |
3236 | ||
3237 | static void | |
3238 | ofproto_rule_change_cookie(struct ofproto *ofproto, struct rule *rule, | |
3239 | ovs_be64 new_cookie) | |
15aaf599 | 3240 | OVS_REQUIRES(ofproto_mutex) |
98eaac36 JR |
3241 | { |
3242 | if (new_cookie != rule->flow_cookie) { | |
3243 | cookies_remove(ofproto, rule); | |
3244 | ||
c7c9a7c8 | 3245 | ovs_mutex_lock(&rule->mutex); |
98eaac36 | 3246 | rule->flow_cookie = new_cookie; |
c7c9a7c8 | 3247 | ovs_mutex_unlock(&rule->mutex); |
98eaac36 JR |
3248 | |
3249 | cookies_insert(ofproto, rule); | |
3250 | } | |
3251 | } | |
3252 | ||
c6ebb8fb | 3253 | static void |
65e0be10 BP |
3254 | calc_duration(long long int start, long long int now, |
3255 | uint32_t *sec, uint32_t *nsec) | |
c6ebb8fb | 3256 | { |
f27f2134 | 3257 | long long int msecs = now - start; |
588cd7b5 BP |
3258 | *sec = msecs / 1000; |
3259 | *nsec = (msecs % 1000) * (1000 * 1000); | |
3260 | } | |
3261 | ||
48266274 | 3262 | /* Checks whether 'table_id' is 0xff or a valid table ID in 'ofproto'. Returns |
554764d1 SH |
3263 | * true if 'table_id' is OK, false otherwise. */ |
3264 | static bool | |
48266274 BP |
3265 | check_table_id(const struct ofproto *ofproto, uint8_t table_id) |
3266 | { | |
554764d1 | 3267 | return table_id == OFPTT_ALL || table_id < ofproto->n_tables; |
48266274 BP |
3268 | } |
3269 | ||
5c67e4af | 3270 | static struct oftable * |
d4ce8a49 | 3271 | next_visible_table(const struct ofproto *ofproto, uint8_t table_id) |
5c67e4af BP |
3272 | { |
3273 | struct oftable *table; | |
3274 | ||
3275 | for (table = &ofproto->tables[table_id]; | |
3276 | table < &ofproto->tables[ofproto->n_tables]; | |
3277 | table++) { | |
3278 | if (!(table->flags & OFTABLE_HIDDEN)) { | |
3279 | return table; | |
3280 | } | |
3281 | } | |
3282 | ||
3283 | return NULL; | |
3284 | } | |
3285 | ||
d0918789 | 3286 | static struct oftable * |
d4ce8a49 | 3287 | first_matching_table(const struct ofproto *ofproto, uint8_t table_id) |
064af421 | 3288 | { |
6c1491fb | 3289 | if (table_id == 0xff) { |
5c67e4af | 3290 | return next_visible_table(ofproto, 0); |
6c1491fb BP |
3291 | } else if (table_id < ofproto->n_tables) { |
3292 | return &ofproto->tables[table_id]; | |
a02e5331 | 3293 | } else { |
6c1491fb | 3294 | return NULL; |
a02e5331 | 3295 | } |
064af421 BP |
3296 | } |
3297 | ||
d0918789 | 3298 | static struct oftable * |
d4ce8a49 BP |
3299 | next_matching_table(const struct ofproto *ofproto, |
3300 | const struct oftable *table, uint8_t table_id) | |
6c1491fb | 3301 | { |
5c67e4af BP |
3302 | return (table_id == 0xff |
3303 | ? next_visible_table(ofproto, (table - ofproto->tables) + 1) | |
6c1491fb BP |
3304 | : NULL); |
3305 | } | |
3306 | ||
d0918789 | 3307 | /* Assigns TABLE to each oftable, in turn, that matches TABLE_ID in OFPROTO: |
6c1491fb BP |
3308 | * |
3309 | * - If TABLE_ID is 0xff, this iterates over every classifier table in | |
5c67e4af | 3310 | * OFPROTO, skipping tables marked OFTABLE_HIDDEN. |
6c1491fb BP |
3311 | * |
3312 | * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates | |
5c67e4af BP |
3313 | * only once, for that table. (This can be used to access tables marked |
3314 | * OFTABLE_HIDDEN.) | |
6c1491fb | 3315 | * |
48266274 BP |
3316 | * - Otherwise, TABLE_ID isn't valid for OFPROTO, so the loop won't be |
3317 | * entered at all. (Perhaps you should have validated TABLE_ID with | |
3318 | * check_table_id().) | |
6c1491fb BP |
3319 | * |
3320 | * All parameters are evaluated multiple times. | |
3321 | */ | |
d0918789 BP |
3322 | #define FOR_EACH_MATCHING_TABLE(TABLE, TABLE_ID, OFPROTO) \ |
3323 | for ((TABLE) = first_matching_table(OFPROTO, TABLE_ID); \ | |
3324 | (TABLE) != NULL; \ | |
3325 | (TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID)) | |
6c1491fb | 3326 | |
a9b22b7f BP |
3327 | /* Initializes 'criteria' in a straightforward way based on the other |
3328 | * parameters. | |
3329 | * | |
3330 | * For "loose" matching, the 'priority' parameter is unimportant and may be | |
3331 | * supplied as 0. */ | |
3332 | static void | |
3333 | rule_criteria_init(struct rule_criteria *criteria, uint8_t table_id, | |
3334 | const struct match *match, unsigned int priority, | |
3335 | ovs_be64 cookie, ovs_be64 cookie_mask, | |
3336 | ofp_port_t out_port, uint32_t out_group) | |
3337 | { | |
3338 | criteria->table_id = table_id; | |
3339 | cls_rule_init(&criteria->cr, match, priority); | |
3340 | criteria->cookie = cookie; | |
3341 | criteria->cookie_mask = cookie_mask; | |
3342 | criteria->out_port = out_port; | |
3343 | criteria->out_group = out_group; | |
3344 | } | |
3345 | ||
3346 | static void | |
3347 | rule_criteria_destroy(struct rule_criteria *criteria) | |
3348 | { | |
3349 | cls_rule_destroy(&criteria->cr); | |
3350 | } | |
3351 | ||
a8e547c1 BP |
3352 | void |
3353 | rule_collection_init(struct rule_collection *rules) | |
3354 | { | |
3355 | rules->rules = rules->stub; | |
3356 | rules->n = 0; | |
3357 | rules->capacity = ARRAY_SIZE(rules->stub); | |
3358 | } | |
3359 | ||
3360 | void | |
3361 | rule_collection_add(struct rule_collection *rules, struct rule *rule) | |
3362 | { | |
3363 | if (rules->n >= rules->capacity) { | |
3364 | size_t old_size, new_size; | |
3365 | ||
3366 | old_size = rules->capacity * sizeof *rules->rules; | |
3367 | rules->capacity *= 2; | |
3368 | new_size = rules->capacity * sizeof *rules->rules; | |
3369 | ||
3370 | if (rules->rules == rules->stub) { | |
3371 | rules->rules = xmalloc(new_size); | |
3372 | memcpy(rules->rules, rules->stub, old_size); | |
3373 | } else { | |
3374 | rules->rules = xrealloc(rules->rules, new_size); | |
3375 | } | |
3376 | } | |
3377 | ||
3378 | rules->rules[rules->n++] = rule; | |
3379 | } | |
3380 | ||
15aaf599 BP |
3381 | void |
3382 | rule_collection_ref(struct rule_collection *rules) | |
3383 | OVS_REQUIRES(ofproto_mutex) | |
3384 | { | |
3385 | size_t i; | |
3386 | ||
3387 | for (i = 0; i < rules->n; i++) { | |
3388 | ofproto_rule_ref(rules->rules[i]); | |
3389 | } | |
3390 | } | |
3391 | ||
3392 | void | |
3393 | rule_collection_unref(struct rule_collection *rules) | |
3394 | { | |
3395 | size_t i; | |
3396 | ||
3397 | for (i = 0; i < rules->n; i++) { | |
3398 | ofproto_rule_unref(rules->rules[i]); | |
3399 | } | |
3400 | } | |
3401 | ||
a8e547c1 BP |
3402 | void |
3403 | rule_collection_destroy(struct rule_collection *rules) | |
3404 | { | |
3405 | if (rules->rules != rules->stub) { | |
3406 | free(rules->rules); | |
3407 | } | |
3408 | } | |
3409 | ||
6c1d7642 | 3410 | static enum ofperr |
a9b22b7f | 3411 | collect_rule(struct rule *rule, const struct rule_criteria *c, |
a8e547c1 | 3412 | struct rule_collection *rules) |
15aaf599 | 3413 | OVS_REQUIRES(ofproto_mutex) |
6c1d7642 | 3414 | { |
3e8116d9 BP |
3415 | /* We ordinarily want to skip hidden rules, but there has to be a way for |
3416 | * code internal to OVS to modify and delete them, so if the criteria | |
3417 | * specify a priority that can only be for a hidden flow, then allow hidden | |
3418 | * rules to be selected. (This doesn't allow OpenFlow clients to meddle | |
3419 | * with hidden flows because OpenFlow uses only a 16-bit field to specify | |
3420 | * priority.) */ | |
3421 | if (ofproto_rule_is_hidden(rule) && c->cr.priority <= UINT16_MAX) { | |
6c1d7642 BP |
3422 | return 0; |
3423 | } else if (rule->pending) { | |
3424 | return OFPROTO_POSTPONE; | |
3425 | } else { | |
a9b22b7f BP |
3426 | if ((c->table_id == rule->table_id || c->table_id == 0xff) |
3427 | && ofproto_rule_has_out_port(rule, c->out_port) | |
3428 | && ofproto_rule_has_out_group(rule, c->out_group) | |
3429 | && !((rule->flow_cookie ^ c->cookie) & c->cookie_mask)) { | |
a8e547c1 | 3430 | rule_collection_add(rules, rule); |
6c1d7642 BP |
3431 | } |
3432 | return 0; | |
3433 | } | |
3434 | } | |
3435 | ||
a9b22b7f BP |
3436 | /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches |
3437 | * on classifiers rules are done in the "loose" way required for OpenFlow | |
3438 | * OFPFC_MODIFY and OFPFC_DELETE requests. Puts the selected rules on list | |
9ed18e46 BP |
3439 | * 'rules'. |
3440 | * | |
9ed18e46 BP |
3441 | * Hidden rules are always omitted. |
3442 | * | |
3443 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 3444 | static enum ofperr |
a9b22b7f | 3445 | collect_rules_loose(struct ofproto *ofproto, |
a8e547c1 BP |
3446 | const struct rule_criteria *criteria, |
3447 | struct rule_collection *rules) | |
15aaf599 | 3448 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 3449 | { |
d0918789 | 3450 | struct oftable *table; |
554764d1 | 3451 | enum ofperr error = 0; |
48266274 | 3452 | |
a8e547c1 BP |
3453 | rule_collection_init(rules); |
3454 | ||
554764d1 SH |
3455 | if (!check_table_id(ofproto, criteria->table_id)) { |
3456 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
a8e547c1 | 3457 | goto exit; |
48266274 | 3458 | } |
9ed18e46 | 3459 | |
b8266395 | 3460 | if (criteria->cookie_mask == OVS_BE64_MAX) { |
98eaac36 JR |
3461 | struct rule *rule; |
3462 | ||
a9b22b7f BP |
3463 | HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node, |
3464 | hash_cookie(criteria->cookie), | |
98eaac36 | 3465 | &ofproto->cookies) { |
a9b22b7f BP |
3466 | if (cls_rule_is_loose_match(&rule->cr, &criteria->cr.match)) { |
3467 | error = collect_rule(rule, criteria, rules); | |
6c1d7642 BP |
3468 | if (error) { |
3469 | break; | |
98eaac36 JR |
3470 | } |
3471 | } | |
3472 | } | |
6c1d7642 | 3473 | } else { |
a9b22b7f | 3474 | FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) { |
6c1d7642 BP |
3475 | struct cls_cursor cursor; |
3476 | struct rule *rule; | |
9ed18e46 | 3477 | |
06f81620 | 3478 | fat_rwlock_rdlock(&table->cls.rwlock); |
a9b22b7f | 3479 | cls_cursor_init(&cursor, &table->cls, &criteria->cr); |
6c1d7642 | 3480 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
a9b22b7f | 3481 | error = collect_rule(rule, criteria, rules); |
6c1d7642 BP |
3482 | if (error) { |
3483 | break; | |
3484 | } | |
9ed18e46 | 3485 | } |
06f81620 | 3486 | fat_rwlock_unlock(&table->cls.rwlock); |
9ed18e46 BP |
3487 | } |
3488 | } | |
48d28ac1 | 3489 | |
a8e547c1 BP |
3490 | exit: |
3491 | if (error) { | |
3492 | rule_collection_destroy(rules); | |
3493 | } | |
48d28ac1 | 3494 | return error; |
9ed18e46 BP |
3495 | } |
3496 | ||
a9b22b7f BP |
3497 | /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches |
3498 | * on classifiers rules are done in the "strict" way required for OpenFlow | |
3499 | * OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests. Puts the selected | |
3500 | * rules on list 'rules'. | |
9ed18e46 BP |
3501 | * |
3502 | * Hidden rules are always omitted. | |
3503 | * | |
3504 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 3505 | static enum ofperr |
a9b22b7f | 3506 | collect_rules_strict(struct ofproto *ofproto, |
a8e547c1 BP |
3507 | const struct rule_criteria *criteria, |
3508 | struct rule_collection *rules) | |
15aaf599 | 3509 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 3510 | { |
d0918789 | 3511 | struct oftable *table; |
554764d1 | 3512 | int error = 0; |
48266274 | 3513 | |
a8e547c1 BP |
3514 | rule_collection_init(rules); |
3515 | ||
554764d1 SH |
3516 | if (!check_table_id(ofproto, criteria->table_id)) { |
3517 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
a8e547c1 | 3518 | goto exit; |
48266274 | 3519 | } |
9ed18e46 | 3520 | |
b8266395 | 3521 | if (criteria->cookie_mask == OVS_BE64_MAX) { |
98eaac36 JR |
3522 | struct rule *rule; |
3523 | ||
a9b22b7f BP |
3524 | HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node, |
3525 | hash_cookie(criteria->cookie), | |
98eaac36 | 3526 | &ofproto->cookies) { |
a9b22b7f BP |
3527 | if (cls_rule_equal(&rule->cr, &criteria->cr)) { |
3528 | error = collect_rule(rule, criteria, rules); | |
6c1d7642 BP |
3529 | if (error) { |
3530 | break; | |
98eaac36 JR |
3531 | } |
3532 | } | |
3533 | } | |
6c1d7642 | 3534 | } else { |
a9b22b7f | 3535 | FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) { |
6c1d7642 | 3536 | struct rule *rule; |
9ed18e46 | 3537 | |
06f81620 | 3538 | fat_rwlock_rdlock(&table->cls.rwlock); |
a9b22b7f BP |
3539 | rule = rule_from_cls_rule(classifier_find_rule_exactly( |
3540 | &table->cls, &criteria->cr)); | |
06f81620 | 3541 | fat_rwlock_unlock(&table->cls.rwlock); |
6c1d7642 | 3542 | if (rule) { |
a9b22b7f | 3543 | error = collect_rule(rule, criteria, rules); |
6c1d7642 BP |
3544 | if (error) { |
3545 | break; | |
3546 | } | |
9ed18e46 BP |
3547 | } |
3548 | } | |
3549 | } | |
48d28ac1 | 3550 | |
a8e547c1 BP |
3551 | exit: |
3552 | if (error) { | |
3553 | rule_collection_destroy(rules); | |
3554 | } | |
6c1d7642 | 3555 | return error; |
9ed18e46 BP |
3556 | } |
3557 | ||
f27f2134 BP |
3558 | /* Returns 'age_ms' (a duration in milliseconds), converted to seconds and |
3559 | * forced into the range of a uint16_t. */ | |
3560 | static int | |
3561 | age_secs(long long int age_ms) | |
3562 | { | |
3563 | return (age_ms < 0 ? 0 | |
3564 | : age_ms >= UINT16_MAX * 1000 ? UINT16_MAX | |
3565 | : (unsigned int) age_ms / 1000); | |
3566 | } | |
3567 | ||
90bf1e07 | 3568 | static enum ofperr |
63f2140a | 3569 | handle_flow_stats_request(struct ofconn *ofconn, |
982697a4 | 3570 | const struct ofp_header *request) |
15aaf599 | 3571 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 3572 | { |
64ff1d96 | 3573 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 3574 | struct ofputil_flow_stats_request fsr; |
a9b22b7f | 3575 | struct rule_criteria criteria; |
a8e547c1 | 3576 | struct rule_collection rules; |
63f2140a | 3577 | struct list replies; |
90bf1e07 | 3578 | enum ofperr error; |
a8e547c1 | 3579 | size_t i; |
09246b99 | 3580 | |
982697a4 | 3581 | error = ofputil_decode_flow_stats_request(&fsr, request); |
09246b99 BP |
3582 | if (error) { |
3583 | return error; | |
3584 | } | |
3585 | ||
a9b22b7f BP |
3586 | rule_criteria_init(&criteria, fsr.table_id, &fsr.match, 0, fsr.cookie, |
3587 | fsr.cookie_mask, fsr.out_port, fsr.out_group); | |
15aaf599 BP |
3588 | |
3589 | ovs_mutex_lock(&ofproto_mutex); | |
a9b22b7f BP |
3590 | error = collect_rules_loose(ofproto, &criteria, &rules); |
3591 | rule_criteria_destroy(&criteria); | |
15aaf599 BP |
3592 | if (!error) { |
3593 | rule_collection_ref(&rules); | |
3594 | } | |
3595 | ovs_mutex_unlock(&ofproto_mutex); | |
3596 | ||
9ed18e46 BP |
3597 | if (error) { |
3598 | return error; | |
3599 | } | |
5ecc9d81 | 3600 | |
982697a4 | 3601 | ofpmp_init(&replies, request); |
a8e547c1 BP |
3602 | for (i = 0; i < rules.n; i++) { |
3603 | struct rule *rule = rules.rules[i]; | |
f27f2134 | 3604 | long long int now = time_msec(); |
9ed18e46 | 3605 | struct ofputil_flow_stats fs; |
15aaf599 | 3606 | long long int created, used, modified; |
dc723c44 | 3607 | const struct rule_actions *actions; |
15aaf599 | 3608 | enum ofputil_flow_mod_flags flags; |
a3779dbc | 3609 | |
d10976b7 | 3610 | ovs_mutex_lock(&rule->mutex); |
15aaf599 | 3611 | fs.cookie = rule->flow_cookie; |
a3779dbc EJ |
3612 | fs.idle_timeout = rule->idle_timeout; |
3613 | fs.hard_timeout = rule->hard_timeout; | |
15aaf599 | 3614 | created = rule->created; |
15aaf599 | 3615 | modified = rule->modified; |
06a0f3e2 | 3616 | actions = rule_get_actions(rule); |
15aaf599 | 3617 | flags = rule->flags; |
d10976b7 | 3618 | ovs_mutex_unlock(&rule->mutex); |
a3779dbc | 3619 | |
dc437090 JR |
3620 | ofproto->ofproto_class->rule_get_stats(rule, &fs.packet_count, |
3621 | &fs.byte_count, &used); | |
3622 | ||
15aaf599 BP |
3623 | minimatch_expand(&rule->cr.match, &fs.match); |
3624 | fs.table_id = rule->table_id; | |
3625 | calc_duration(created, now, &fs.duration_sec, &fs.duration_nsec); | |
3626 | fs.priority = rule->cr.priority; | |
3627 | fs.idle_age = age_secs(now - used); | |
3628 | fs.hard_age = age_secs(now - modified); | |
15aaf599 BP |
3629 | fs.ofpacts = actions->ofpacts; |
3630 | fs.ofpacts_len = actions->ofpacts_len; | |
3f517bcd | 3631 | |
15aaf599 | 3632 | fs.flags = flags; |
9ed18e46 | 3633 | ofputil_append_flow_stats_reply(&fs, &replies); |
3c4486a5 | 3634 | } |
15aaf599 BP |
3635 | |
3636 | rule_collection_unref(&rules); | |
a8e547c1 BP |
3637 | rule_collection_destroy(&rules); |
3638 | ||
63f2140a | 3639 | ofconn_send_replies(ofconn, &replies); |
5ecc9d81 | 3640 | |
09246b99 BP |
3641 | return 0; |
3642 | } | |
3643 | ||
4f2cad2c | 3644 | static void |
3394b5b6 | 3645 | flow_stats_ds(struct rule *rule, struct ds *results) |
4f2cad2c | 3646 | { |
4f2cad2c | 3647 | uint64_t packet_count, byte_count; |
dc723c44 | 3648 | const struct rule_actions *actions; |
dc437090 | 3649 | long long int created, used; |
4f2cad2c | 3650 | |
dc437090 JR |
3651 | rule->ofproto->ofproto_class->rule_get_stats(rule, &packet_count, |
3652 | &byte_count, &used); | |
4f2cad2c | 3653 | |
15aaf599 | 3654 | ovs_mutex_lock(&rule->mutex); |
06a0f3e2 | 3655 | actions = rule_get_actions(rule); |
15aaf599 BP |
3656 | created = rule->created; |
3657 | ovs_mutex_unlock(&rule->mutex); | |
3658 | ||
6c1491fb BP |
3659 | if (rule->table_id != 0) { |
3660 | ds_put_format(results, "table_id=%"PRIu8", ", rule->table_id); | |
3661 | } | |
15aaf599 | 3662 | ds_put_format(results, "duration=%llds, ", (time_msec() - created) / 1000); |
4f2cad2c JP |
3663 | ds_put_format(results, "n_packets=%"PRIu64", ", packet_count); |
3664 | ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count); | |
cb833cf6 | 3665 | cls_rule_format(&rule->cr, results); |
a5df0e72 | 3666 | ds_put_char(results, ','); |
15aaf599 | 3667 | |
455ecd77 | 3668 | ds_put_cstr(results, "actions="); |
15aaf599 BP |
3669 | ofpacts_format(actions->ofpacts, actions->ofpacts_len, results); |
3670 | ||
4f2cad2c JP |
3671 | ds_put_cstr(results, "\n"); |
3672 | } | |
3673 | ||
d295e8e9 | 3674 | /* Adds a pretty-printed description of all flows to 'results', including |
ee8b231c | 3675 | * hidden flows (e.g., set up by in-band control). */ |
4f2cad2c JP |
3676 | void |
3677 | ofproto_get_all_flows(struct ofproto *p, struct ds *results) | |
3678 | { | |
d0918789 | 3679 | struct oftable *table; |
6c1491fb | 3680 | |
d0918789 | 3681 | OFPROTO_FOR_EACH_TABLE (table, p) { |
6c1491fb BP |
3682 | struct cls_cursor cursor; |
3683 | struct rule *rule; | |
064af421 | 3684 | |
06f81620 | 3685 | fat_rwlock_rdlock(&table->cls.rwlock); |
d0918789 | 3686 | cls_cursor_init(&cursor, &table->cls, NULL); |
6c1491fb BP |
3687 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
3688 | flow_stats_ds(rule, results); | |
3689 | } | |
06f81620 | 3690 | fat_rwlock_unlock(&table->cls.rwlock); |
064af421 | 3691 | } |
064af421 BP |
3692 | } |
3693 | ||
b5827b24 BP |
3694 | /* Obtains the NetFlow engine type and engine ID for 'ofproto' into |
3695 | * '*engine_type' and '*engine_id', respectively. */ | |
3696 | void | |
3697 | ofproto_get_netflow_ids(const struct ofproto *ofproto, | |
3698 | uint8_t *engine_type, uint8_t *engine_id) | |
3699 | { | |
abe529af | 3700 | ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id); |
b5827b24 BP |
3701 | } |
3702 | ||
88bf179a AW |
3703 | /* Checks the status of CFM configured on 'ofp_port' within 'ofproto'. |
3704 | * Returns 0 if the port's CFM status was successfully stored into | |
3705 | * '*status'. Returns positive errno if the port did not have CFM | |
3706 | * configured. Returns negative number if there is no status change | |
3707 | * since last update. | |
9a9e3786 | 3708 | * |
88bf179a AW |
3709 | * The caller must provide and own '*status', and must free 'status->rmps'. |
3710 | * '*status' is indeterminate if the return value is non-zero. */ | |
3711 | int | |
4e022ec0 | 3712 | ofproto_port_get_cfm_status(const struct ofproto *ofproto, ofp_port_t ofp_port, |
9a9e3786 | 3713 | struct ofproto_cfm_status *status) |
3967a833 MM |
3714 | { |
3715 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
88bf179a AW |
3716 | return (ofport && ofproto->ofproto_class->get_cfm_status |
3717 | ? ofproto->ofproto_class->get_cfm_status(ofport, status) | |
3718 | : EOPNOTSUPP); | |
3967a833 MM |
3719 | } |
3720 | ||
90bf1e07 | 3721 | static enum ofperr |
76c93b22 | 3722 | handle_aggregate_stats_request(struct ofconn *ofconn, |
982697a4 | 3723 | const struct ofp_header *oh) |
15aaf599 | 3724 | OVS_EXCLUDED(ofproto_mutex) |
27d34fce | 3725 | { |
76c93b22 | 3726 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 3727 | struct ofputil_flow_stats_request request; |
76c93b22 | 3728 | struct ofputil_aggregate_stats stats; |
5e9d0469 | 3729 | bool unknown_packets, unknown_bytes; |
a9b22b7f | 3730 | struct rule_criteria criteria; |
a8e547c1 | 3731 | struct rule_collection rules; |
76c93b22 | 3732 | struct ofpbuf *reply; |
90bf1e07 | 3733 | enum ofperr error; |
a8e547c1 | 3734 | size_t i; |
27d34fce | 3735 | |
982697a4 | 3736 | error = ofputil_decode_flow_stats_request(&request, oh); |
76c93b22 BP |
3737 | if (error) { |
3738 | return error; | |
3739 | } | |
5ecc9d81 | 3740 | |
a9b22b7f BP |
3741 | rule_criteria_init(&criteria, request.table_id, &request.match, 0, |
3742 | request.cookie, request.cookie_mask, | |
3743 | request.out_port, request.out_group); | |
15aaf599 BP |
3744 | |
3745 | ovs_mutex_lock(&ofproto_mutex); | |
a9b22b7f BP |
3746 | error = collect_rules_loose(ofproto, &criteria, &rules); |
3747 | rule_criteria_destroy(&criteria); | |
15aaf599 BP |
3748 | if (!error) { |
3749 | rule_collection_ref(&rules); | |
3750 | } | |
3751 | ovs_mutex_unlock(&ofproto_mutex); | |
3752 | ||
9ed18e46 BP |
3753 | if (error) { |
3754 | return error; | |
3755 | } | |
3c4486a5 | 3756 | |
9ed18e46 | 3757 | memset(&stats, 0, sizeof stats); |
5e9d0469 | 3758 | unknown_packets = unknown_bytes = false; |
a8e547c1 BP |
3759 | for (i = 0; i < rules.n; i++) { |
3760 | struct rule *rule = rules.rules[i]; | |
9ed18e46 BP |
3761 | uint64_t packet_count; |
3762 | uint64_t byte_count; | |
dc437090 | 3763 | long long int used; |
5ecc9d81 | 3764 | |
9ed18e46 | 3765 | ofproto->ofproto_class->rule_get_stats(rule, &packet_count, |
dc437090 | 3766 | &byte_count, &used); |
5ecc9d81 | 3767 | |
5e9d0469 BP |
3768 | if (packet_count == UINT64_MAX) { |
3769 | unknown_packets = true; | |
3770 | } else { | |
3771 | stats.packet_count += packet_count; | |
3772 | } | |
3773 | ||
3774 | if (byte_count == UINT64_MAX) { | |
3775 | unknown_bytes = true; | |
3776 | } else { | |
3777 | stats.byte_count += byte_count; | |
3778 | } | |
3779 | ||
9ed18e46 | 3780 | stats.flow_count++; |
3c4486a5 | 3781 | } |
5e9d0469 BP |
3782 | if (unknown_packets) { |
3783 | stats.packet_count = UINT64_MAX; | |
3784 | } | |
3785 | if (unknown_bytes) { | |
3786 | stats.byte_count = UINT64_MAX; | |
3787 | } | |
27d34fce | 3788 | |
15aaf599 | 3789 | rule_collection_unref(&rules); |
a8e547c1 BP |
3790 | rule_collection_destroy(&rules); |
3791 | ||
982697a4 | 3792 | reply = ofputil_encode_aggregate_stats_reply(&stats, oh); |
76c93b22 | 3793 | ofconn_send_reply(ofconn, reply); |
09246b99 BP |
3794 | |
3795 | return 0; | |
3796 | } | |
3797 | ||
c1c9c9c4 | 3798 | struct queue_stats_cbdata { |
ca0f572c | 3799 | struct ofport *ofport; |
63f2140a | 3800 | struct list replies; |
6dc34a0d | 3801 | long long int now; |
c1c9c9c4 BP |
3802 | }; |
3803 | ||
3804 | static void | |
db9220c3 | 3805 | put_queue_stats(struct queue_stats_cbdata *cbdata, uint32_t queue_id, |
c1c9c9c4 BP |
3806 | const struct netdev_queue_stats *stats) |
3807 | { | |
6dc34a0d | 3808 | struct ofputil_queue_stats oqs; |
c1c9c9c4 | 3809 | |
6dc34a0d BP |
3810 | oqs.port_no = cbdata->ofport->pp.port_no; |
3811 | oqs.queue_id = queue_id; | |
3812 | oqs.tx_bytes = stats->tx_bytes; | |
3813 | oqs.tx_packets = stats->tx_packets; | |
3814 | oqs.tx_errors = stats->tx_errors; | |
3815 | if (stats->created != LLONG_MIN) { | |
3816 | calc_duration(stats->created, cbdata->now, | |
3817 | &oqs.duration_sec, &oqs.duration_nsec); | |
3818 | } else { | |
3819 | oqs.duration_sec = oqs.duration_nsec = UINT32_MAX; | |
3820 | } | |
64626975 | 3821 | ofputil_append_queue_stat(&cbdata->replies, &oqs); |
c1c9c9c4 BP |
3822 | } |
3823 | ||
3824 | static void | |
db9220c3 | 3825 | handle_queue_stats_dump_cb(uint32_t queue_id, |
c1c9c9c4 BP |
3826 | struct netdev_queue_stats *stats, |
3827 | void *cbdata_) | |
3828 | { | |
3829 | struct queue_stats_cbdata *cbdata = cbdata_; | |
3830 | ||
3831 | put_queue_stats(cbdata, queue_id, stats); | |
3832 | } | |
3833 | ||
0414d158 | 3834 | static enum ofperr |
ca0f572c | 3835 | handle_queue_stats_for_port(struct ofport *port, uint32_t queue_id, |
c1c9c9c4 BP |
3836 | struct queue_stats_cbdata *cbdata) |
3837 | { | |
ca0f572c | 3838 | cbdata->ofport = port; |
c1c9c9c4 BP |
3839 | if (queue_id == OFPQ_ALL) { |
3840 | netdev_dump_queue_stats(port->netdev, | |
3841 | handle_queue_stats_dump_cb, cbdata); | |
3842 | } else { | |
3843 | struct netdev_queue_stats stats; | |
3844 | ||
1ac788f6 BP |
3845 | if (!netdev_get_queue_stats(port->netdev, queue_id, &stats)) { |
3846 | put_queue_stats(cbdata, queue_id, &stats); | |
0414d158 BP |
3847 | } else { |
3848 | return OFPERR_OFPQOFC_BAD_QUEUE; | |
1ac788f6 | 3849 | } |
c1c9c9c4 | 3850 | } |
0414d158 | 3851 | return 0; |
c1c9c9c4 BP |
3852 | } |
3853 | ||
90bf1e07 | 3854 | static enum ofperr |
63f2140a | 3855 | handle_queue_stats_request(struct ofconn *ofconn, |
982697a4 | 3856 | const struct ofp_header *rq) |
c1c9c9c4 | 3857 | { |
64ff1d96 | 3858 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
c1c9c9c4 | 3859 | struct queue_stats_cbdata cbdata; |
0414d158 | 3860 | struct ofport *port; |
0414d158 | 3861 | enum ofperr error; |
64626975 | 3862 | struct ofputil_queue_stats_request oqsr; |
c1c9c9c4 | 3863 | |
c1c9c9c4 BP |
3864 | COVERAGE_INC(ofproto_queue_req); |
3865 | ||
982697a4 | 3866 | ofpmp_init(&cbdata.replies, rq); |
6dc34a0d | 3867 | cbdata.now = time_msec(); |
c1c9c9c4 | 3868 | |
64626975 SH |
3869 | error = ofputil_decode_queue_stats_request(rq, &oqsr); |
3870 | if (error) { | |
3871 | return error; | |
3872 | } | |
3873 | ||
7f05e7ab | 3874 | if (oqsr.port_no == OFPP_ANY) { |
0414d158 | 3875 | error = OFPERR_OFPQOFC_BAD_QUEUE; |
4e8e4213 | 3876 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
64626975 | 3877 | if (!handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata)) { |
0414d158 BP |
3878 | error = 0; |
3879 | } | |
c1c9c9c4 | 3880 | } |
0414d158 | 3881 | } else { |
64626975 | 3882 | port = ofproto_get_port(ofproto, oqsr.port_no); |
0414d158 | 3883 | error = (port |
64626975 | 3884 | ? handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata) |
0414d158 BP |
3885 | : OFPERR_OFPQOFC_BAD_PORT); |
3886 | } | |
3887 | if (!error) { | |
3888 | ofconn_send_replies(ofconn, &cbdata.replies); | |
c1c9c9c4 | 3889 | } else { |
63f2140a | 3890 | ofpbuf_list_delete(&cbdata.replies); |
c1c9c9c4 | 3891 | } |
c1c9c9c4 | 3892 | |
0414d158 | 3893 | return error; |
c1c9c9c4 | 3894 | } |
7ee20df1 BP |
3895 | |
3896 | static bool | |
3897 | is_flow_deletion_pending(const struct ofproto *ofproto, | |
3898 | const struct cls_rule *cls_rule, | |
3899 | uint8_t table_id) | |
15aaf599 | 3900 | OVS_REQUIRES(ofproto_mutex) |
7ee20df1 BP |
3901 | { |
3902 | if (!hmap_is_empty(&ofproto->deletions)) { | |
3903 | struct ofoperation *op; | |
3904 | ||
3905 | HMAP_FOR_EACH_WITH_HASH (op, hmap_node, | |
3906 | cls_rule_hash(cls_rule, table_id), | |
3907 | &ofproto->deletions) { | |
a6fcf462 EJ |
3908 | if (op->rule->table_id == table_id |
3909 | && cls_rule_equal(cls_rule, &op->rule->cr)) { | |
7ee20df1 BP |
3910 | return true; |
3911 | } | |
3912 | } | |
3913 | } | |
3914 | ||
3915 | return false; | |
3916 | } | |
3917 | ||
2e31a9b8 BP |
3918 | static bool |
3919 | should_evict_a_rule(struct oftable *table, unsigned int extra_space) | |
15aaf599 BP |
3920 | OVS_REQUIRES(ofproto_mutex) |
3921 | OVS_NO_THREAD_SAFETY_ANALYSIS | |
8037acb4 | 3922 | { |
15aaf599 | 3923 | return classifier_count(&table->cls) + extra_space > table->max_flows; |
2e31a9b8 | 3924 | } |
8037acb4 | 3925 | |
2e31a9b8 BP |
3926 | static enum ofperr |
3927 | evict_rules_from_table(struct ofproto *ofproto, struct oftable *table, | |
3928 | unsigned int extra_space) | |
15aaf599 | 3929 | OVS_REQUIRES(ofproto_mutex) |
2e31a9b8 BP |
3930 | { |
3931 | while (should_evict_a_rule(table, extra_space)) { | |
3932 | struct rule *rule; | |
8037acb4 | 3933 | |
2e31a9b8 BP |
3934 | if (!choose_rule_to_evict(table, &rule)) { |
3935 | return OFPERR_OFPFMFC_TABLE_FULL; | |
3936 | } else if (rule->pending) { | |
2e31a9b8 BP |
3937 | return OFPROTO_POSTPONE; |
3938 | } else { | |
3939 | struct ofopgroup *group = ofopgroup_create_unattached(ofproto); | |
15aaf599 BP |
3940 | delete_flow__(rule, group, OFPRR_EVICTION); |
3941 | ofopgroup_submit(group); | |
2e31a9b8 | 3942 | } |
8037acb4 | 3943 | } |
2e31a9b8 BP |
3944 | |
3945 | return 0; | |
8037acb4 BP |
3946 | } |
3947 | ||
79eee1eb BP |
3948 | /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT |
3949 | * in which no matching flow already exists in the flow table. | |
3950 | * | |
3951 | * Adds the flow specified by 'ofm', which is followed by 'n_actions' | |
75a75043 | 3952 | * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow |
90bf1e07 BP |
3953 | * error code on failure, or OFPROTO_POSTPONE if the operation cannot be |
3954 | * initiated now but may be retried later. | |
79eee1eb | 3955 | * |
2509616e | 3956 | * The caller retains ownership of 'fm->ofpacts'. |
f25d0cf3 | 3957 | * |
79eee1eb BP |
3958 | * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id, |
3959 | * if any. */ | |
90bf1e07 | 3960 | static enum ofperr |
a9a2da38 | 3961 | add_flow(struct ofproto *ofproto, struct ofconn *ofconn, |
e3b56933 | 3962 | struct ofputil_flow_mod *fm, const struct ofp_header *request) |
15aaf599 | 3963 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 3964 | { |
d0918789 | 3965 | struct oftable *table; |
8037acb4 | 3966 | struct cls_rule cr; |
064af421 | 3967 | struct rule *rule; |
5a361239 | 3968 | uint8_t table_id; |
554764d1 | 3969 | int error = 0; |
064af421 | 3970 | |
554764d1 SH |
3971 | if (!check_table_id(ofproto, fm->table_id)) { |
3972 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
48266274 BP |
3973 | return error; |
3974 | } | |
3975 | ||
7ee20df1 BP |
3976 | /* Pick table. */ |
3977 | if (fm->table_id == 0xff) { | |
13521ff5 | 3978 | if (ofproto->ofproto_class->rule_choose_table) { |
81a76618 BP |
3979 | error = ofproto->ofproto_class->rule_choose_table(ofproto, |
3980 | &fm->match, | |
7ee20df1 BP |
3981 | &table_id); |
3982 | if (error) { | |
3983 | return error; | |
3984 | } | |
cb22974d | 3985 | ovs_assert(table_id < ofproto->n_tables); |
7ee20df1 | 3986 | } else { |
5a361239 | 3987 | table_id = 0; |
7ee20df1 BP |
3988 | } |
3989 | } else if (fm->table_id < ofproto->n_tables) { | |
5a361239 | 3990 | table_id = fm->table_id; |
7ee20df1 | 3991 | } else { |
c22c56bd | 3992 | return OFPERR_OFPBRC_BAD_TABLE_ID; |
064af421 BP |
3993 | } |
3994 | ||
5a361239 JR |
3995 | table = &ofproto->tables[table_id]; |
3996 | ||
adcf00ba | 3997 | if (!oftable_is_modifiable(table, fm->flags)) { |
5c67e4af BP |
3998 | return OFPERR_OFPBRC_EPERM; |
3999 | } | |
4000 | ||
adcf00ba AZ |
4001 | if (!(fm->flags & OFPUTIL_FF_HIDDEN_FIELDS)) { |
4002 | if (!match_has_default_hidden_fields(&fm->match)) { | |
4003 | VLOG_WARN_RL(&rl, "%s: (add_flow) only internal flows can set " | |
4004 | "non-default values to hidden fields", ofproto->name); | |
4005 | return OFPERR_OFPBRC_EPERM; | |
4006 | } | |
4007 | } | |
4008 | ||
8037acb4 BP |
4009 | cls_rule_init(&cr, &fm->match, fm->priority); |
4010 | ||
b277c7cc | 4011 | /* Transform "add" into "modify" if there's an existing identical flow. */ |
06f81620 | 4012 | fat_rwlock_rdlock(&table->cls.rwlock); |
8037acb4 | 4013 | rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls, &cr)); |
06f81620 | 4014 | fat_rwlock_unlock(&table->cls.rwlock); |
b277c7cc | 4015 | if (rule) { |
8037acb4 | 4016 | cls_rule_destroy(&cr); |
adcf00ba | 4017 | if (!rule_is_modifiable(rule, fm->flags)) { |
b277c7cc BP |
4018 | return OFPERR_OFPBRC_EPERM; |
4019 | } else if (rule->pending) { | |
4020 | return OFPROTO_POSTPONE; | |
4021 | } else { | |
a8e547c1 | 4022 | struct rule_collection rules; |
b277c7cc | 4023 | |
a8e547c1 BP |
4024 | rule_collection_init(&rules); |
4025 | rule_collection_add(&rules, rule); | |
b277c7cc | 4026 | fm->modify_cookie = true; |
a8e547c1 BP |
4027 | error = modify_flows__(ofproto, ofconn, fm, request, &rules); |
4028 | rule_collection_destroy(&rules); | |
4029 | ||
4030 | return error; | |
b277c7cc BP |
4031 | } |
4032 | } | |
4033 | ||
7ee20df1 | 4034 | /* Serialize against pending deletion. */ |
8037acb4 BP |
4035 | if (is_flow_deletion_pending(ofproto, &cr, table_id)) { |
4036 | cls_rule_destroy(&cr); | |
7ee20df1 | 4037 | return OFPROTO_POSTPONE; |
afe75089 | 4038 | } |
064af421 | 4039 | |
81a76618 | 4040 | /* Check for overlap, if requested. */ |
0fb88c18 | 4041 | if (fm->flags & OFPUTIL_FF_CHECK_OVERLAP) { |
c09f755d BP |
4042 | bool overlaps; |
4043 | ||
06f81620 | 4044 | fat_rwlock_rdlock(&table->cls.rwlock); |
8037acb4 | 4045 | overlaps = classifier_rule_overlaps(&table->cls, &cr); |
06f81620 | 4046 | fat_rwlock_unlock(&table->cls.rwlock); |
c09f755d BP |
4047 | |
4048 | if (overlaps) { | |
8037acb4 | 4049 | cls_rule_destroy(&cr); |
c09f755d BP |
4050 | return OFPERR_OFPFMFC_OVERLAP; |
4051 | } | |
7ee20df1 | 4052 | } |
81a76618 | 4053 | |
8037acb4 | 4054 | /* If necessary, evict an existing rule to clear out space. */ |
2e31a9b8 | 4055 | error = evict_rules_from_table(ofproto, table, 1); |
8037acb4 BP |
4056 | if (error) { |
4057 | cls_rule_destroy(&cr); | |
4058 | return error; | |
4059 | } | |
2e1ae200 | 4060 | |
8037acb4 BP |
4061 | /* Allocate new rule. */ |
4062 | rule = ofproto->ofproto_class->rule_alloc(); | |
4063 | if (!rule) { | |
4064 | cls_rule_destroy(&cr); | |
4065 | VLOG_WARN_RL(&rl, "%s: failed to create rule (%s)", | |
4066 | ofproto->name, ovs_strerror(error)); | |
4067 | return ENOMEM; | |
4068 | } | |
4069 | ||
4070 | /* Initialize base state. */ | |
49a0e0eb BP |
4071 | *CONST_CAST(struct ofproto **, &rule->ofproto) = ofproto; |
4072 | cls_rule_move(CONST_CAST(struct cls_rule *, &rule->cr), &cr); | |
37bec3d3 | 4073 | ovs_refcount_init(&rule->ref_count); |
7ee20df1 | 4074 | rule->pending = NULL; |
623e1caf | 4075 | rule->flow_cookie = fm->new_cookie; |
dc437090 | 4076 | rule->created = rule->modified = time_msec(); |
a3779dbc | 4077 | |
d10976b7 BP |
4078 | ovs_mutex_init(&rule->mutex); |
4079 | ovs_mutex_lock(&rule->mutex); | |
7ee20df1 BP |
4080 | rule->idle_timeout = fm->idle_timeout; |
4081 | rule->hard_timeout = fm->hard_timeout; | |
d10976b7 | 4082 | ovs_mutex_unlock(&rule->mutex); |
a3779dbc | 4083 | |
49a0e0eb | 4084 | *CONST_CAST(uint8_t *, &rule->table_id) = table - ofproto->tables; |
3f517bcd | 4085 | rule->flags = fm->flags & OFPUTIL_FF_STATE; |
06a0f3e2 BP |
4086 | ovsrcu_set(&rule->actions, |
4087 | rule_actions_create(ofproto, fm->ofpacts, fm->ofpacts_len)); | |
9cae45dc | 4088 | list_init(&rule->meter_list_node); |
254750ce | 4089 | rule->eviction_group = NULL; |
e503cc19 | 4090 | list_init(&rule->expirable); |
2b07c8b1 BP |
4091 | rule->monitor_flags = 0; |
4092 | rule->add_seqno = 0; | |
4093 | rule->modify_seqno = 0; | |
7ee20df1 | 4094 | |
8037acb4 | 4095 | /* Construct rule, initializing derived state. */ |
b277c7cc BP |
4096 | error = ofproto->ofproto_class->rule_construct(rule); |
4097 | if (error) { | |
8037acb4 BP |
4098 | ofproto_rule_destroy__(rule); |
4099 | return error; | |
064af421 | 4100 | } |
8037acb4 BP |
4101 | |
4102 | /* Insert rule. */ | |
1ebeaaa7 JS |
4103 | do_add_flow(ofproto, ofconn, request, fm->buffer_id, rule); |
4104 | ||
4105 | return error; | |
4106 | } | |
4107 | ||
4108 | static void | |
4109 | do_add_flow(struct ofproto *ofproto, struct ofconn *ofconn, | |
4110 | const struct ofp_header *request, uint32_t buffer_id, | |
4111 | struct rule *rule) | |
4112 | OVS_REQUIRES(ofproto_mutex) | |
4113 | { | |
4114 | struct ofopgroup *group; | |
4115 | ||
8037acb4 BP |
4116 | oftable_insert_rule(rule); |
4117 | ||
1ebeaaa7 | 4118 | group = ofopgroup_create(ofproto, ofconn, request, buffer_id); |
8037acb4 BP |
4119 | ofoperation_create(group, rule, OFOPERATION_ADD, 0); |
4120 | ofproto->ofproto_class->rule_insert(rule); | |
b277c7cc | 4121 | ofopgroup_submit(group); |
064af421 | 4122 | } |
79eee1eb BP |
4123 | \f |
4124 | /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */ | |
064af421 | 4125 | |
9ed18e46 BP |
4126 | /* Modifies the rules listed in 'rules', changing their actions to match those |
4127 | * in 'fm'. | |
79eee1eb | 4128 | * |
9ed18e46 BP |
4129 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, |
4130 | * if any. | |
4131 | * | |
4132 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 4133 | static enum ofperr |
7024dffe | 4134 | modify_flows__(struct ofproto *ofproto, struct ofconn *ofconn, |
e3b56933 | 4135 | struct ofputil_flow_mod *fm, const struct ofp_header *request, |
a8e547c1 | 4136 | const struct rule_collection *rules) |
15aaf599 | 4137 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4138 | { |
b277c7cc | 4139 | enum ofoperation_type type; |
7ee20df1 | 4140 | struct ofopgroup *group; |
5c67e4af | 4141 | enum ofperr error; |
a8e547c1 | 4142 | size_t i; |
79eee1eb | 4143 | |
b277c7cc | 4144 | type = fm->command == OFPFC_ADD ? OFOPERATION_REPLACE : OFOPERATION_MODIFY; |
7024dffe | 4145 | group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id); |
5c67e4af | 4146 | error = OFPERR_OFPBRC_EPERM; |
a8e547c1 BP |
4147 | for (i = 0; i < rules->n; i++) { |
4148 | struct rule *rule = rules->rules[i]; | |
06a0f3e2 | 4149 | const struct rule_actions *actions; |
08043761 BP |
4150 | struct ofoperation *op; |
4151 | bool actions_changed; | |
b277c7cc | 4152 | bool reset_counters; |
08043761 | 4153 | |
0fb88c18 | 4154 | /* FIXME: Implement OFPFUTIL_FF_RESET_COUNTS */ |
2e1ae200 | 4155 | |
adcf00ba | 4156 | if (rule_is_modifiable(rule, fm->flags)) { |
5c67e4af BP |
4157 | /* At least one rule is modifiable, don't report EPERM error. */ |
4158 | error = 0; | |
4159 | } else { | |
4160 | continue; | |
4161 | } | |
4162 | ||
06a0f3e2 | 4163 | actions = rule_get_actions(rule); |
08043761 | 4164 | actions_changed = !ofpacts_equal(fm->ofpacts, fm->ofpacts_len, |
06a0f3e2 BP |
4165 | actions->ofpacts, |
4166 | actions->ofpacts_len); | |
a7d94793 | 4167 | |
b277c7cc | 4168 | op = ofoperation_create(group, rule, type, 0); |
98eaac36 | 4169 | |
b8266395 | 4170 | if (fm->modify_cookie && fm->new_cookie != OVS_BE64_MAX) { |
98eaac36 JR |
4171 | ofproto_rule_change_cookie(ofproto, rule, fm->new_cookie); |
4172 | } | |
b277c7cc | 4173 | if (type == OFOPERATION_REPLACE) { |
d10976b7 | 4174 | ovs_mutex_lock(&rule->mutex); |
b277c7cc BP |
4175 | rule->idle_timeout = fm->idle_timeout; |
4176 | rule->hard_timeout = fm->hard_timeout; | |
d10976b7 | 4177 | ovs_mutex_unlock(&rule->mutex); |
b277c7cc | 4178 | |
3f517bcd | 4179 | rule->flags = fm->flags & OFPUTIL_FF_STATE; |
b277c7cc BP |
4180 | if (fm->idle_timeout || fm->hard_timeout) { |
4181 | if (!rule->eviction_group) { | |
4182 | eviction_group_add_rule(rule); | |
4183 | } | |
4184 | } else { | |
4185 | eviction_group_remove_rule(rule); | |
4186 | } | |
4187 | } | |
4188 | ||
4189 | reset_counters = (fm->flags & OFPUTIL_FF_RESET_COUNTS) != 0; | |
4190 | if (actions_changed || reset_counters) { | |
dc723c44 | 4191 | const struct rule_actions *new_actions; |
6f00e29b | 4192 | |
06a0f3e2 | 4193 | op->actions = rule_get_actions(rule); |
65efd2ab JR |
4194 | new_actions = rule_actions_create(ofproto, |
4195 | fm->ofpacts, fm->ofpacts_len); | |
884e1dc4 | 4196 | |
06a0f3e2 | 4197 | ovsrcu_set(&rule->actions, new_actions); |
884e1dc4 | 4198 | |
b277c7cc BP |
4199 | rule->ofproto->ofproto_class->rule_modify_actions(rule, |
4200 | reset_counters); | |
308881af | 4201 | } else { |
08043761 | 4202 | ofoperation_complete(op, 0); |
623e1caf | 4203 | } |
5ecc9d81 | 4204 | } |
7ee20df1 | 4205 | ofopgroup_submit(group); |
79eee1eb | 4206 | |
5c67e4af | 4207 | return error; |
9ed18e46 BP |
4208 | } |
4209 | ||
9387b970 SH |
4210 | static enum ofperr |
4211 | modify_flows_add(struct ofproto *ofproto, struct ofconn *ofconn, | |
e3b56933 | 4212 | struct ofputil_flow_mod *fm, const struct ofp_header *request) |
15aaf599 | 4213 | OVS_REQUIRES(ofproto_mutex) |
9387b970 | 4214 | { |
b8266395 | 4215 | if (fm->cookie_mask != htonll(0) || fm->new_cookie == OVS_BE64_MAX) { |
9387b970 SH |
4216 | return 0; |
4217 | } | |
4218 | return add_flow(ofproto, ofconn, fm, request); | |
4219 | } | |
4220 | ||
90bf1e07 BP |
4221 | /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on |
4222 | * failure. | |
9ed18e46 BP |
4223 | * |
4224 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, | |
4225 | * if any. */ | |
90bf1e07 | 4226 | static enum ofperr |
7024dffe | 4227 | modify_flows_loose(struct ofproto *ofproto, struct ofconn *ofconn, |
e3b56933 | 4228 | struct ofputil_flow_mod *fm, |
7ee20df1 | 4229 | const struct ofp_header *request) |
15aaf599 | 4230 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 4231 | { |
a9b22b7f | 4232 | struct rule_criteria criteria; |
a8e547c1 | 4233 | struct rule_collection rules; |
9ed18e46 BP |
4234 | int error; |
4235 | ||
a9b22b7f BP |
4236 | rule_criteria_init(&criteria, fm->table_id, &fm->match, 0, |
4237 | fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG11_ANY); | |
4238 | error = collect_rules_loose(ofproto, &criteria, &rules); | |
4239 | rule_criteria_destroy(&criteria); | |
4240 | ||
a8e547c1 BP |
4241 | if (!error) { |
4242 | error = (rules.n > 0 | |
4243 | ? modify_flows__(ofproto, ofconn, fm, request, &rules) | |
4244 | : modify_flows_add(ofproto, ofconn, fm, request)); | |
623e1caf | 4245 | } |
a8e547c1 BP |
4246 | |
4247 | rule_collection_destroy(&rules); | |
4248 | ||
4249 | return error; | |
79eee1eb BP |
4250 | } |
4251 | ||
4252 | /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error | |
90bf1e07 | 4253 | * code on failure. |
79eee1eb | 4254 | * |
9ed18e46 | 4255 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, |
79eee1eb | 4256 | * if any. */ |
90bf1e07 | 4257 | static enum ofperr |
7024dffe | 4258 | modify_flow_strict(struct ofproto *ofproto, struct ofconn *ofconn, |
e3b56933 | 4259 | struct ofputil_flow_mod *fm, |
7ee20df1 | 4260 | const struct ofp_header *request) |
15aaf599 | 4261 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4262 | { |
a9b22b7f | 4263 | struct rule_criteria criteria; |
a8e547c1 | 4264 | struct rule_collection rules; |
6c1491fb BP |
4265 | int error; |
4266 | ||
a9b22b7f BP |
4267 | rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority, |
4268 | fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG11_ANY); | |
4269 | error = collect_rules_strict(ofproto, &criteria, &rules); | |
4270 | rule_criteria_destroy(&criteria); | |
4271 | ||
a8e547c1 BP |
4272 | if (!error) { |
4273 | if (rules.n == 0) { | |
4274 | error = modify_flows_add(ofproto, ofconn, fm, request); | |
4275 | } else if (rules.n == 1) { | |
4276 | error = modify_flows__(ofproto, ofconn, fm, request, &rules); | |
4277 | } | |
623e1caf | 4278 | } |
a8e547c1 BP |
4279 | |
4280 | rule_collection_destroy(&rules); | |
4281 | ||
4282 | return error; | |
79eee1eb | 4283 | } |
9ed18e46 BP |
4284 | \f |
4285 | /* OFPFC_DELETE implementation. */ | |
79eee1eb | 4286 | |
254750ce | 4287 | static void |
ca311b2f JR |
4288 | delete_flow__(struct rule *rule, struct ofopgroup *group, |
4289 | enum ofp_flow_removed_reason reason) | |
15aaf599 | 4290 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
4291 | { |
4292 | struct ofproto *ofproto = rule->ofproto; | |
4293 | ||
ca311b2f | 4294 | ofproto_rule_send_removed(rule, reason); |
254750ce | 4295 | |
ca311b2f | 4296 | ofoperation_create(group, rule, OFOPERATION_DELETE, reason); |
254750ce | 4297 | oftable_remove_rule(rule); |
8037acb4 | 4298 | ofproto->ofproto_class->rule_delete(rule); |
254750ce BP |
4299 | } |
4300 | ||
9ed18e46 BP |
4301 | /* Deletes the rules listed in 'rules'. |
4302 | * | |
4303 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 4304 | static enum ofperr |
7024dffe | 4305 | delete_flows__(struct ofproto *ofproto, struct ofconn *ofconn, |
a8e547c1 BP |
4306 | const struct ofp_header *request, |
4307 | const struct rule_collection *rules, | |
ca311b2f | 4308 | enum ofp_flow_removed_reason reason) |
15aaf599 | 4309 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 4310 | { |
7ee20df1 | 4311 | struct ofopgroup *group; |
a8e547c1 | 4312 | size_t i; |
79eee1eb | 4313 | |
7024dffe | 4314 | group = ofopgroup_create(ofproto, ofconn, request, UINT32_MAX); |
a8e547c1 | 4315 | for (i = 0; i < rules->n; i++) { |
15aaf599 | 4316 | delete_flow__(rules->rules[i], group, reason); |
79eee1eb | 4317 | } |
7ee20df1 | 4318 | ofopgroup_submit(group); |
79eee1eb | 4319 | |
9ed18e46 | 4320 | return 0; |
79eee1eb | 4321 | } |
79eee1eb BP |
4322 | |
4323 | /* Implements OFPFC_DELETE. */ | |
90bf1e07 | 4324 | static enum ofperr |
7024dffe BP |
4325 | delete_flows_loose(struct ofproto *ofproto, struct ofconn *ofconn, |
4326 | const struct ofputil_flow_mod *fm, | |
7ee20df1 | 4327 | const struct ofp_header *request) |
15aaf599 | 4328 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4329 | { |
a9b22b7f | 4330 | struct rule_criteria criteria; |
a8e547c1 | 4331 | struct rule_collection rules; |
90bf1e07 | 4332 | enum ofperr error; |
064af421 | 4333 | |
a9b22b7f BP |
4334 | rule_criteria_init(&criteria, fm->table_id, &fm->match, 0, |
4335 | fm->cookie, fm->cookie_mask, | |
4336 | fm->out_port, fm->out_group); | |
4337 | error = collect_rules_loose(ofproto, &criteria, &rules); | |
4338 | rule_criteria_destroy(&criteria); | |
4339 | ||
a8e547c1 BP |
4340 | if (!error && rules.n > 0) { |
4341 | error = delete_flows__(ofproto, ofconn, request, &rules, OFPRR_DELETE); | |
4342 | } | |
4343 | rule_collection_destroy(&rules); | |
4344 | ||
4345 | return error; | |
064af421 BP |
4346 | } |
4347 | ||
79eee1eb | 4348 | /* Implements OFPFC_DELETE_STRICT. */ |
90bf1e07 | 4349 | static enum ofperr |
7024dffe | 4350 | delete_flow_strict(struct ofproto *ofproto, struct ofconn *ofconn, |
1b9d6420 | 4351 | const struct ofputil_flow_mod *fm, |
7ee20df1 | 4352 | const struct ofp_header *request) |
15aaf599 | 4353 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4354 | { |
a9b22b7f | 4355 | struct rule_criteria criteria; |
a8e547c1 | 4356 | struct rule_collection rules; |
90bf1e07 | 4357 | enum ofperr error; |
79eee1eb | 4358 | |
a9b22b7f BP |
4359 | rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority, |
4360 | fm->cookie, fm->cookie_mask, | |
4361 | fm->out_port, fm->out_group); | |
4362 | error = collect_rules_strict(ofproto, &criteria, &rules); | |
4363 | rule_criteria_destroy(&criteria); | |
4364 | ||
a8e547c1 BP |
4365 | if (!error && rules.n > 0) { |
4366 | error = delete_flows__(ofproto, ofconn, request, &rules, OFPRR_DELETE); | |
4367 | } | |
4368 | rule_collection_destroy(&rules); | |
4369 | ||
4370 | return error; | |
abe529af BP |
4371 | } |
4372 | ||
4373 | static void | |
4374 | ofproto_rule_send_removed(struct rule *rule, uint8_t reason) | |
15aaf599 | 4375 | OVS_REQUIRES(ofproto_mutex) |
abe529af BP |
4376 | { |
4377 | struct ofputil_flow_removed fr; | |
dc437090 | 4378 | long long int used; |
abe529af | 4379 | |
3f517bcd DB |
4380 | if (ofproto_rule_is_hidden(rule) || |
4381 | !(rule->flags & OFPUTIL_FF_SEND_FLOW_REM)) { | |
abe529af BP |
4382 | return; |
4383 | } | |
4384 | ||
5cb7a798 | 4385 | minimatch_expand(&rule->cr.match, &fr.match); |
81a76618 | 4386 | fr.priority = rule->cr.priority; |
abe529af BP |
4387 | fr.cookie = rule->flow_cookie; |
4388 | fr.reason = reason; | |
95216219 | 4389 | fr.table_id = rule->table_id; |
65e0be10 BP |
4390 | calc_duration(rule->created, time_msec(), |
4391 | &fr.duration_sec, &fr.duration_nsec); | |
d10976b7 | 4392 | ovs_mutex_lock(&rule->mutex); |
abe529af | 4393 | fr.idle_timeout = rule->idle_timeout; |
fa2bad0f | 4394 | fr.hard_timeout = rule->hard_timeout; |
d10976b7 | 4395 | ovs_mutex_unlock(&rule->mutex); |
abe529af | 4396 | rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count, |
dc437090 | 4397 | &fr.byte_count, &used); |
abe529af BP |
4398 | |
4399 | connmgr_send_flow_removed(rule->ofproto->connmgr, &fr); | |
4400 | } | |
4401 | ||
4402 | /* Sends an OpenFlow "flow removed" message with the given 'reason' (either | |
4403 | * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its | |
4404 | * ofproto. | |
4405 | * | |
e2a3d183 BP |
4406 | * 'rule' must not have a pending operation (that is, 'rule->pending' must be |
4407 | * NULL). | |
4408 | * | |
abe529af BP |
4409 | * ofproto implementation ->run() functions should use this function to expire |
4410 | * OpenFlow flows. */ | |
4411 | void | |
4412 | ofproto_rule_expire(struct rule *rule, uint8_t reason) | |
15aaf599 | 4413 | OVS_REQUIRES(ofproto_mutex) |
abe529af | 4414 | { |
7ee20df1 | 4415 | struct ofproto *ofproto = rule->ofproto; |
7ee20df1 | 4416 | |
7395c052 NZ |
4417 | ovs_assert(reason == OFPRR_HARD_TIMEOUT || reason == OFPRR_IDLE_TIMEOUT |
4418 | || reason == OFPRR_DELETE || reason == OFPRR_GROUP_DELETE); | |
7ee20df1 | 4419 | |
ad9ca2fc | 4420 | ofproto_rule_delete__(ofproto, rule, reason); |
79eee1eb | 4421 | } |
994c9973 BP |
4422 | |
4423 | /* Reduces '*timeout' to no more than 'max'. A value of zero in either case | |
4424 | * means "infinite". */ | |
4425 | static void | |
4426 | reduce_timeout(uint16_t max, uint16_t *timeout) | |
4427 | { | |
4428 | if (max && (!*timeout || *timeout > max)) { | |
4429 | *timeout = max; | |
4430 | } | |
4431 | } | |
4432 | ||
4433 | /* If 'idle_timeout' is nonzero, and 'rule' has no idle timeout or an idle | |
4434 | * timeout greater than 'idle_timeout', lowers 'rule''s idle timeout to | |
4435 | * 'idle_timeout' seconds. Similarly for 'hard_timeout'. | |
4436 | * | |
4437 | * Suitable for implementing OFPACT_FIN_TIMEOUT. */ | |
4438 | void | |
4439 | ofproto_rule_reduce_timeouts(struct rule *rule, | |
4440 | uint16_t idle_timeout, uint16_t hard_timeout) | |
d10976b7 | 4441 | OVS_EXCLUDED(ofproto_mutex, rule->mutex) |
994c9973 BP |
4442 | { |
4443 | if (!idle_timeout && !hard_timeout) { | |
4444 | return; | |
4445 | } | |
4446 | ||
abe7b10f | 4447 | ovs_mutex_lock(&ofproto_mutex); |
994c9973 BP |
4448 | if (list_is_empty(&rule->expirable)) { |
4449 | list_insert(&rule->ofproto->expirable, &rule->expirable); | |
4450 | } | |
abe7b10f | 4451 | ovs_mutex_unlock(&ofproto_mutex); |
994c9973 | 4452 | |
d10976b7 | 4453 | ovs_mutex_lock(&rule->mutex); |
994c9973 BP |
4454 | reduce_timeout(idle_timeout, &rule->idle_timeout); |
4455 | reduce_timeout(hard_timeout, &rule->hard_timeout); | |
d10976b7 | 4456 | ovs_mutex_unlock(&rule->mutex); |
994c9973 | 4457 | } |
79eee1eb | 4458 | \f |
90bf1e07 | 4459 | static enum ofperr |
2e4f5fcf | 4460 | handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
15aaf599 | 4461 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 4462 | { |
a5b8d268 | 4463 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
a9a2da38 | 4464 | struct ofputil_flow_mod fm; |
f25d0cf3 BP |
4465 | uint64_t ofpacts_stub[1024 / 8]; |
4466 | struct ofpbuf ofpacts; | |
90bf1e07 | 4467 | enum ofperr error; |
064af421 | 4468 | |
76589937 | 4469 | error = reject_slave_controller(ofconn); |
9deba63b | 4470 | if (error) { |
f25d0cf3 | 4471 | goto exit; |
9deba63b | 4472 | } |
3052b0c5 | 4473 | |
f25d0cf3 BP |
4474 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
4475 | error = ofputil_decode_flow_mod(&fm, oh, ofconn_get_protocol(ofconn), | |
7e9f8266 BP |
4476 | &ofpacts, |
4477 | u16_to_ofp(ofproto->max_ports), | |
4478 | ofproto->n_tables); | |
4479 | if (!error) { | |
4480 | error = ofproto_check_ofpacts(ofproto, fm.ofpacts, fm.ofpacts_len); | |
4481 | } | |
548de4dd | 4482 | if (!error) { |
f1822532 | 4483 | error = handle_flow_mod__(ofproto, ofconn, &fm, oh); |
49bdc010 | 4484 | } |
a5b8d268 | 4485 | if (error) { |
f25d0cf3 | 4486 | goto exit_free_ofpacts; |
a5b8d268 | 4487 | } |
2e310801 | 4488 | |
696d1bcf | 4489 | ofconn_report_flow_mod(ofconn, fm.command); |
a5b8d268 | 4490 | |
f25d0cf3 BP |
4491 | exit_free_ofpacts: |
4492 | ofpbuf_uninit(&ofpacts); | |
4493 | exit: | |
4494 | return error; | |
75a75043 BP |
4495 | } |
4496 | ||
90bf1e07 | 4497 | static enum ofperr |
75a75043 | 4498 | handle_flow_mod__(struct ofproto *ofproto, struct ofconn *ofconn, |
e3b56933 | 4499 | struct ofputil_flow_mod *fm, const struct ofp_header *oh) |
15aaf599 | 4500 | OVS_EXCLUDED(ofproto_mutex) |
75a75043 | 4501 | { |
35412852 | 4502 | enum ofperr error; |
75a75043 | 4503 | |
15aaf599 | 4504 | ovs_mutex_lock(&ofproto_mutex); |
35412852 BP |
4505 | if (ofproto->n_pending < 50) { |
4506 | switch (fm->command) { | |
4507 | case OFPFC_ADD: | |
4508 | error = add_flow(ofproto, ofconn, fm, oh); | |
4509 | break; | |
3052b0c5 | 4510 | |
35412852 BP |
4511 | case OFPFC_MODIFY: |
4512 | error = modify_flows_loose(ofproto, ofconn, fm, oh); | |
4513 | break; | |
3052b0c5 | 4514 | |
35412852 BP |
4515 | case OFPFC_MODIFY_STRICT: |
4516 | error = modify_flow_strict(ofproto, ofconn, fm, oh); | |
4517 | break; | |
3052b0c5 | 4518 | |
35412852 BP |
4519 | case OFPFC_DELETE: |
4520 | error = delete_flows_loose(ofproto, ofconn, fm, oh); | |
4521 | break; | |
3052b0c5 | 4522 | |
35412852 BP |
4523 | case OFPFC_DELETE_STRICT: |
4524 | error = delete_flow_strict(ofproto, ofconn, fm, oh); | |
4525 | break; | |
3052b0c5 | 4526 | |
35412852 BP |
4527 | default: |
4528 | if (fm->command > 0xff) { | |
4529 | VLOG_WARN_RL(&rl, "%s: flow_mod has explicit table_id but " | |
4530 | "flow_mod_table_id extension is not enabled", | |
4531 | ofproto->name); | |
4532 | } | |
4533 | error = OFPERR_OFPFMFC_BAD_COMMAND; | |
4534 | break; | |
6c1491fb | 4535 | } |
35412852 BP |
4536 | } else { |
4537 | ovs_assert(!list_is_empty(&ofproto->pending)); | |
4538 | error = OFPROTO_POSTPONE; | |
3052b0c5 | 4539 | } |
15aaf599 | 4540 | ovs_mutex_unlock(&ofproto_mutex); |
35412852 BP |
4541 | |
4542 | run_rule_executes(ofproto); | |
4543 | return error; | |
3052b0c5 BP |
4544 | } |
4545 | ||
90bf1e07 | 4546 | static enum ofperr |
d1e2cf21 | 4547 | handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh) |
9deba63b | 4548 | { |
f4f1ea7e BP |
4549 | struct ofputil_role_request request; |
4550 | struct ofputil_role_request reply; | |
9deba63b | 4551 | struct ofpbuf *buf; |
6ea4776b JR |
4552 | enum ofperr error; |
4553 | ||
f4f1ea7e | 4554 | error = ofputil_decode_role_message(oh, &request); |
6ea4776b JR |
4555 | if (error) { |
4556 | return error; | |
4557 | } | |
9deba63b | 4558 | |
f4f1ea7e BP |
4559 | if (request.role != OFPCR12_ROLE_NOCHANGE) { |
4560 | if (ofconn_get_role(ofconn) != request.role | |
4561 | && ofconn_has_pending_opgroups(ofconn)) { | |
4562 | return OFPROTO_POSTPONE; | |
4563 | } | |
7ee20df1 | 4564 | |
f4f1ea7e BP |
4565 | if (request.have_generation_id |
4566 | && !ofconn_set_master_election_id(ofconn, request.generation_id)) { | |
4567 | return OFPERR_OFPRRFC_STALE; | |
6ea4776b | 4568 | } |
6ea4776b | 4569 | |
f4f1ea7e BP |
4570 | ofconn_set_role(ofconn, request.role); |
4571 | } | |
9deba63b | 4572 | |
f4f1ea7e | 4573 | reply.role = ofconn_get_role(ofconn); |
147cc9d3 BP |
4574 | reply.have_generation_id = ofconn_get_master_election_id( |
4575 | ofconn, &reply.generation_id); | |
f4f1ea7e | 4576 | buf = ofputil_encode_role_reply(oh, &reply); |
b0421aa2 | 4577 | ofconn_send_reply(ofconn, buf); |
9deba63b BP |
4578 | |
4579 | return 0; | |
4580 | } | |
4581 | ||
90bf1e07 | 4582 | static enum ofperr |
6c1491fb BP |
4583 | handle_nxt_flow_mod_table_id(struct ofconn *ofconn, |
4584 | const struct ofp_header *oh) | |
4585 | { | |
982697a4 | 4586 | const struct nx_flow_mod_table_id *msg = ofpmsg_body(oh); |
27527aa0 BP |
4587 | enum ofputil_protocol cur, next; |
4588 | ||
4589 | cur = ofconn_get_protocol(ofconn); | |
4590 | next = ofputil_protocol_set_tid(cur, msg->set != 0); | |
4591 | ofconn_set_protocol(ofconn, next); | |
6c1491fb | 4592 | |
6c1491fb BP |
4593 | return 0; |
4594 | } | |
4595 | ||
90bf1e07 | 4596 | static enum ofperr |
d1e2cf21 | 4597 | handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh) |
09246b99 | 4598 | { |
982697a4 | 4599 | const struct nx_set_flow_format *msg = ofpmsg_body(oh); |
27527aa0 BP |
4600 | enum ofputil_protocol cur, next; |
4601 | enum ofputil_protocol next_base; | |
09246b99 | 4602 | |
27527aa0 BP |
4603 | next_base = ofputil_nx_flow_format_to_protocol(ntohl(msg->format)); |
4604 | if (!next_base) { | |
90bf1e07 | 4605 | return OFPERR_OFPBRC_EPERM; |
09246b99 | 4606 | } |
7ee20df1 | 4607 | |
27527aa0 BP |
4608 | cur = ofconn_get_protocol(ofconn); |
4609 | next = ofputil_protocol_set_base(cur, next_base); | |
4610 | if (cur != next && ofconn_has_pending_opgroups(ofconn)) { | |
4611 | /* Avoid sending async messages in surprising protocol. */ | |
7ee20df1 BP |
4612 | return OFPROTO_POSTPONE; |
4613 | } | |
4614 | ||
27527aa0 | 4615 | ofconn_set_protocol(ofconn, next); |
7ee20df1 | 4616 | return 0; |
09246b99 BP |
4617 | } |
4618 | ||
90bf1e07 | 4619 | static enum ofperr |
54834960 EJ |
4620 | handle_nxt_set_packet_in_format(struct ofconn *ofconn, |
4621 | const struct ofp_header *oh) | |
4622 | { | |
982697a4 | 4623 | const struct nx_set_packet_in_format *msg = ofpmsg_body(oh); |
54834960 EJ |
4624 | uint32_t format; |
4625 | ||
54834960 | 4626 | format = ntohl(msg->format); |
a15f0eeb | 4627 | if (format != NXPIF_OPENFLOW10 && format != NXPIF_NXM) { |
90bf1e07 | 4628 | return OFPERR_OFPBRC_EPERM; |
54834960 EJ |
4629 | } |
4630 | ||
4631 | if (format != ofconn_get_packet_in_format(ofconn) | |
4632 | && ofconn_has_pending_opgroups(ofconn)) { | |
4633 | /* Avoid sending async message in surprsing packet in format. */ | |
4634 | return OFPROTO_POSTPONE; | |
4635 | } | |
4636 | ||
4637 | ofconn_set_packet_in_format(ofconn, format); | |
4638 | return 0; | |
4639 | } | |
4640 | ||
80d5aefd BP |
4641 | static enum ofperr |
4642 | handle_nxt_set_async_config(struct ofconn *ofconn, const struct ofp_header *oh) | |
4643 | { | |
982697a4 | 4644 | const struct nx_async_config *msg = ofpmsg_body(oh); |
80d5aefd BP |
4645 | uint32_t master[OAM_N_TYPES]; |
4646 | uint32_t slave[OAM_N_TYPES]; | |
4647 | ||
4648 | master[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[0]); | |
4649 | master[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[0]); | |
4650 | master[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[0]); | |
4651 | ||
4652 | slave[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[1]); | |
4653 | slave[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[1]); | |
4654 | slave[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[1]); | |
4655 | ||
4656 | ofconn_set_async_config(ofconn, master, slave); | |
4550b647 MM |
4657 | if (ofconn_get_type(ofconn) == OFCONN_SERVICE && |
4658 | !ofconn_get_miss_send_len(ofconn)) { | |
4659 | ofconn_set_miss_send_len(ofconn, OFP_DEFAULT_MISS_SEND_LEN); | |
4660 | } | |
80d5aefd BP |
4661 | |
4662 | return 0; | |
4663 | } | |
4664 | ||
c423b3b3 AC |
4665 | static enum ofperr |
4666 | handle_nxt_get_async_request(struct ofconn *ofconn, const struct ofp_header *oh) | |
4667 | { | |
4668 | struct ofpbuf *buf; | |
4669 | uint32_t master[OAM_N_TYPES]; | |
4670 | uint32_t slave[OAM_N_TYPES]; | |
4671 | struct nx_async_config *msg; | |
4672 | ||
4673 | ofconn_get_async_config(ofconn, master, slave); | |
4674 | buf = ofpraw_alloc_reply(OFPRAW_OFPT13_GET_ASYNC_REPLY, oh, 0); | |
4675 | msg = ofpbuf_put_zeros(buf, sizeof *msg); | |
4676 | ||
4677 | msg->packet_in_mask[0] = htonl(master[OAM_PACKET_IN]); | |
4678 | msg->port_status_mask[0] = htonl(master[OAM_PORT_STATUS]); | |
4679 | msg->flow_removed_mask[0] = htonl(master[OAM_FLOW_REMOVED]); | |
4680 | ||
4681 | msg->packet_in_mask[1] = htonl(slave[OAM_PACKET_IN]); | |
4682 | msg->port_status_mask[1] = htonl(slave[OAM_PORT_STATUS]); | |
4683 | msg->flow_removed_mask[1] = htonl(slave[OAM_FLOW_REMOVED]); | |
4684 | ||
4685 | ofconn_send_reply(ofconn, buf); | |
4686 | ||
4687 | return 0; | |
4688 | } | |
4689 | ||
a7349929 BP |
4690 | static enum ofperr |
4691 | handle_nxt_set_controller_id(struct ofconn *ofconn, | |
4692 | const struct ofp_header *oh) | |
4693 | { | |
982697a4 | 4694 | const struct nx_controller_id *nci = ofpmsg_body(oh); |
a7349929 | 4695 | |
a7349929 BP |
4696 | if (!is_all_zeros(nci->zero, sizeof nci->zero)) { |
4697 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
4698 | } | |
4699 | ||
4700 | ofconn_set_controller_id(ofconn, ntohs(nci->controller_id)); | |
4701 | return 0; | |
4702 | } | |
4703 | ||
90bf1e07 | 4704 | static enum ofperr |
d1e2cf21 | 4705 | handle_barrier_request(struct ofconn *ofconn, const struct ofp_header *oh) |
246e61ea | 4706 | { |
246e61ea JP |
4707 | struct ofpbuf *buf; |
4708 | ||
7ee20df1 BP |
4709 | if (ofconn_has_pending_opgroups(ofconn)) { |
4710 | return OFPROTO_POSTPONE; | |
4711 | } | |
4712 | ||
982697a4 BP |
4713 | buf = ofpraw_alloc_reply((oh->version == OFP10_VERSION |
4714 | ? OFPRAW_OFPT10_BARRIER_REPLY | |
4715 | : OFPRAW_OFPT11_BARRIER_REPLY), oh, 0); | |
b0421aa2 | 4716 | ofconn_send_reply(ofconn, buf); |
246e61ea JP |
4717 | return 0; |
4718 | } | |
4719 | ||
2b07c8b1 BP |
4720 | static void |
4721 | ofproto_compose_flow_refresh_update(const struct rule *rule, | |
4722 | enum nx_flow_monitor_flags flags, | |
4723 | struct list *msgs) | |
15aaf599 | 4724 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
4725 | { |
4726 | struct ofoperation *op = rule->pending; | |
6f00e29b | 4727 | const struct rule_actions *actions; |
2b07c8b1 | 4728 | struct ofputil_flow_update fu; |
5cb7a798 | 4729 | struct match match; |
2b07c8b1 | 4730 | |
b277c7cc | 4731 | if (op && op->type == OFOPERATION_ADD) { |
2b07c8b1 BP |
4732 | /* We'll report the final flow when the operation completes. Reporting |
4733 | * it now would cause a duplicate report later. */ | |
4734 | return; | |
4735 | } | |
4736 | ||
4737 | fu.event = (flags & (NXFMF_INITIAL | NXFMF_ADD) | |
4738 | ? NXFME_ADDED : NXFME_MODIFIED); | |
4739 | fu.reason = 0; | |
d10976b7 | 4740 | ovs_mutex_lock(&rule->mutex); |
2b07c8b1 BP |
4741 | fu.idle_timeout = rule->idle_timeout; |
4742 | fu.hard_timeout = rule->hard_timeout; | |
d10976b7 | 4743 | ovs_mutex_unlock(&rule->mutex); |
2b07c8b1 BP |
4744 | fu.table_id = rule->table_id; |
4745 | fu.cookie = rule->flow_cookie; | |
5cb7a798 BP |
4746 | minimatch_expand(&rule->cr.match, &match); |
4747 | fu.match = &match; | |
6b140a4e | 4748 | fu.priority = rule->cr.priority; |
6f00e29b | 4749 | |
2b07c8b1 | 4750 | if (!(flags & NXFMF_ACTIONS)) { |
6f00e29b | 4751 | actions = NULL; |
2b07c8b1 | 4752 | } else if (!op) { |
06a0f3e2 | 4753 | actions = rule_get_actions(rule); |
2b07c8b1 BP |
4754 | } else { |
4755 | /* An operation is in progress. Use the previous version of the flow's | |
4756 | * actions, so that when the operation commits we report the change. */ | |
4757 | switch (op->type) { | |
4758 | case OFOPERATION_ADD: | |
428b2edd | 4759 | OVS_NOT_REACHED(); |
2b07c8b1 BP |
4760 | |
4761 | case OFOPERATION_MODIFY: | |
b277c7cc | 4762 | case OFOPERATION_REPLACE: |
06a0f3e2 | 4763 | actions = op->actions ? op->actions : rule_get_actions(rule); |
2b07c8b1 BP |
4764 | break; |
4765 | ||
4766 | case OFOPERATION_DELETE: | |
06a0f3e2 | 4767 | actions = rule_get_actions(rule); |
2b07c8b1 BP |
4768 | break; |
4769 | ||
4770 | default: | |
428b2edd | 4771 | OVS_NOT_REACHED(); |
2b07c8b1 BP |
4772 | } |
4773 | } | |
6f00e29b BP |
4774 | fu.ofpacts = actions ? actions->ofpacts : NULL; |
4775 | fu.ofpacts_len = actions ? actions->ofpacts_len : 0; | |
2b07c8b1 BP |
4776 | |
4777 | if (list_is_empty(msgs)) { | |
4778 | ofputil_start_flow_update(msgs); | |
4779 | } | |
4780 | ofputil_append_flow_update(&fu, msgs); | |
4781 | } | |
4782 | ||
4783 | void | |
a8e547c1 BP |
4784 | ofmonitor_compose_refresh_updates(struct rule_collection *rules, |
4785 | struct list *msgs) | |
15aaf599 | 4786 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 | 4787 | { |
a8e547c1 | 4788 | size_t i; |
2b07c8b1 | 4789 | |
a8e547c1 BP |
4790 | for (i = 0; i < rules->n; i++) { |
4791 | struct rule *rule = rules->rules[i]; | |
2b07c8b1 BP |
4792 | enum nx_flow_monitor_flags flags = rule->monitor_flags; |
4793 | rule->monitor_flags = 0; | |
4794 | ||
4795 | ofproto_compose_flow_refresh_update(rule, flags, msgs); | |
4796 | } | |
4797 | } | |
4798 | ||
4799 | static void | |
4800 | ofproto_collect_ofmonitor_refresh_rule(const struct ofmonitor *m, | |
4801 | struct rule *rule, uint64_t seqno, | |
a8e547c1 | 4802 | struct rule_collection *rules) |
15aaf599 | 4803 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
4804 | { |
4805 | enum nx_flow_monitor_flags update; | |
4806 | ||
4807 | if (ofproto_rule_is_hidden(rule)) { | |
4808 | return; | |
4809 | } | |
4810 | ||
4811 | if (!(rule->pending | |
4812 | ? ofoperation_has_out_port(rule->pending, m->out_port) | |
4813 | : ofproto_rule_has_out_port(rule, m->out_port))) { | |
4814 | return; | |
4815 | } | |
4816 | ||
4817 | if (seqno) { | |
4818 | if (rule->add_seqno > seqno) { | |
4819 | update = NXFMF_ADD | NXFMF_MODIFY; | |
4820 | } else if (rule->modify_seqno > seqno) { | |
4821 | update = NXFMF_MODIFY; | |
4822 | } else { | |
4823 | return; | |
4824 | } | |
4825 | ||
4826 | if (!(m->flags & update)) { | |
4827 | return; | |
4828 | } | |
4829 | } else { | |
4830 | update = NXFMF_INITIAL; | |
4831 | } | |
4832 | ||
4833 | if (!rule->monitor_flags) { | |
a8e547c1 | 4834 | rule_collection_add(rules, rule); |
2b07c8b1 BP |
4835 | } |
4836 | rule->monitor_flags |= update | (m->flags & NXFMF_ACTIONS); | |
4837 | } | |
4838 | ||
4839 | static void | |
4840 | ofproto_collect_ofmonitor_refresh_rules(const struct ofmonitor *m, | |
4841 | uint64_t seqno, | |
a8e547c1 | 4842 | struct rule_collection *rules) |
15aaf599 | 4843 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
4844 | { |
4845 | const struct ofproto *ofproto = ofconn_get_ofproto(m->ofconn); | |
4846 | const struct ofoperation *op; | |
4847 | const struct oftable *table; | |
81a76618 | 4848 | struct cls_rule target; |
2b07c8b1 | 4849 | |
5cb7a798 | 4850 | cls_rule_init_from_minimatch(&target, &m->match, 0); |
2b07c8b1 BP |
4851 | FOR_EACH_MATCHING_TABLE (table, m->table_id, ofproto) { |
4852 | struct cls_cursor cursor; | |
4853 | struct rule *rule; | |
4854 | ||
06f81620 | 4855 | fat_rwlock_rdlock(&table->cls.rwlock); |
81a76618 | 4856 | cls_cursor_init(&cursor, &table->cls, &target); |
2b07c8b1 | 4857 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
cb22974d | 4858 | ovs_assert(!rule->pending); /* XXX */ |
2b07c8b1 BP |
4859 | ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules); |
4860 | } | |
06f81620 | 4861 | fat_rwlock_unlock(&table->cls.rwlock); |
2b07c8b1 BP |
4862 | } |
4863 | ||
4864 | HMAP_FOR_EACH (op, hmap_node, &ofproto->deletions) { | |
4865 | struct rule *rule = op->rule; | |
4866 | ||
4867 | if (((m->table_id == 0xff | |
4868 | ? !(ofproto->tables[rule->table_id].flags & OFTABLE_HIDDEN) | |
4869 | : m->table_id == rule->table_id)) | |
81a76618 | 4870 | && cls_rule_is_loose_match(&rule->cr, &target.match)) { |
2b07c8b1 BP |
4871 | ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules); |
4872 | } | |
4873 | } | |
48d28ac1 | 4874 | cls_rule_destroy(&target); |
2b07c8b1 BP |
4875 | } |
4876 | ||
4877 | static void | |
4878 | ofproto_collect_ofmonitor_initial_rules(struct ofmonitor *m, | |
a8e547c1 | 4879 | struct rule_collection *rules) |
15aaf599 | 4880 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
4881 | { |
4882 | if (m->flags & NXFMF_INITIAL) { | |
4883 | ofproto_collect_ofmonitor_refresh_rules(m, 0, rules); | |
4884 | } | |
4885 | } | |
4886 | ||
4887 | void | |
4888 | ofmonitor_collect_resume_rules(struct ofmonitor *m, | |
a8e547c1 | 4889 | uint64_t seqno, struct rule_collection *rules) |
15aaf599 | 4890 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
4891 | { |
4892 | ofproto_collect_ofmonitor_refresh_rules(m, seqno, rules); | |
4893 | } | |
4894 | ||
4895 | static enum ofperr | |
982697a4 | 4896 | handle_flow_monitor_request(struct ofconn *ofconn, const struct ofp_header *oh) |
15aaf599 | 4897 | OVS_EXCLUDED(ofproto_mutex) |
2b07c8b1 BP |
4898 | { |
4899 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
4900 | struct ofmonitor **monitors; | |
4901 | size_t n_monitors, allocated_monitors; | |
a8e547c1 | 4902 | struct rule_collection rules; |
2b07c8b1 BP |
4903 | struct list replies; |
4904 | enum ofperr error; | |
2b07c8b1 BP |
4905 | struct ofpbuf b; |
4906 | size_t i; | |
4907 | ||
4908 | error = 0; | |
982697a4 | 4909 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
2b07c8b1 BP |
4910 | monitors = NULL; |
4911 | n_monitors = allocated_monitors = 0; | |
15aaf599 BP |
4912 | |
4913 | ovs_mutex_lock(&ofproto_mutex); | |
2b07c8b1 BP |
4914 | for (;;) { |
4915 | struct ofputil_flow_monitor_request request; | |
4916 | struct ofmonitor *m; | |
4917 | int retval; | |
4918 | ||
4919 | retval = ofputil_decode_flow_monitor_request(&request, &b); | |
4920 | if (retval == EOF) { | |
4921 | break; | |
4922 | } else if (retval) { | |
4923 | error = retval; | |
4924 | goto error; | |
4925 | } | |
4926 | ||
4927 | if (request.table_id != 0xff | |
4928 | && request.table_id >= ofproto->n_tables) { | |
4929 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
4930 | goto error; | |
4931 | } | |
4932 | ||
4933 | error = ofmonitor_create(&request, ofconn, &m); | |
4934 | if (error) { | |
4935 | goto error; | |
4936 | } | |
4937 | ||
4938 | if (n_monitors >= allocated_monitors) { | |
4939 | monitors = x2nrealloc(monitors, &allocated_monitors, | |
4940 | sizeof *monitors); | |
4941 | } | |
4942 | monitors[n_monitors++] = m; | |
4943 | } | |
4944 | ||
a8e547c1 | 4945 | rule_collection_init(&rules); |
2b07c8b1 BP |
4946 | for (i = 0; i < n_monitors; i++) { |
4947 | ofproto_collect_ofmonitor_initial_rules(monitors[i], &rules); | |
4948 | } | |
4949 | ||
982697a4 | 4950 | ofpmp_init(&replies, oh); |
2b07c8b1 | 4951 | ofmonitor_compose_refresh_updates(&rules, &replies); |
15aaf599 BP |
4952 | ovs_mutex_unlock(&ofproto_mutex); |
4953 | ||
a8e547c1 BP |
4954 | rule_collection_destroy(&rules); |
4955 | ||
2b07c8b1 | 4956 | ofconn_send_replies(ofconn, &replies); |
2b07c8b1 BP |
4957 | free(monitors); |
4958 | ||
4959 | return 0; | |
4960 | ||
4961 | error: | |
4962 | for (i = 0; i < n_monitors; i++) { | |
4963 | ofmonitor_destroy(monitors[i]); | |
4964 | } | |
4965 | free(monitors); | |
4cd1bc9d BP |
4966 | ovs_mutex_unlock(&ofproto_mutex); |
4967 | ||
2b07c8b1 BP |
4968 | return error; |
4969 | } | |
4970 | ||
4971 | static enum ofperr | |
4972 | handle_flow_monitor_cancel(struct ofconn *ofconn, const struct ofp_header *oh) | |
15aaf599 | 4973 | OVS_EXCLUDED(ofproto_mutex) |
2b07c8b1 BP |
4974 | { |
4975 | struct ofmonitor *m; | |
15aaf599 | 4976 | enum ofperr error; |
2b07c8b1 BP |
4977 | uint32_t id; |
4978 | ||
4979 | id = ofputil_decode_flow_monitor_cancel(oh); | |
15aaf599 BP |
4980 | |
4981 | ovs_mutex_lock(&ofproto_mutex); | |
2b07c8b1 | 4982 | m = ofmonitor_lookup(ofconn, id); |
15aaf599 BP |
4983 | if (m) { |
4984 | ofmonitor_destroy(m); | |
4985 | error = 0; | |
4986 | } else { | |
4987 | error = OFPERR_NXBRC_FM_BAD_ID; | |
2b07c8b1 | 4988 | } |
15aaf599 | 4989 | ovs_mutex_unlock(&ofproto_mutex); |
2b07c8b1 | 4990 | |
15aaf599 | 4991 | return error; |
2b07c8b1 BP |
4992 | } |
4993 | ||
9cae45dc JR |
4994 | /* Meters implementation. |
4995 | * | |
4996 | * Meter table entry, indexed by the OpenFlow meter_id. | |
9cae45dc JR |
4997 | * 'created' is used to compute the duration for meter stats. |
4998 | * 'list rules' is needed so that we can delete the dependent rules when the | |
4999 | * meter table entry is deleted. | |
5000 | * 'provider_meter_id' is for the provider's private use. | |
5001 | */ | |
5002 | struct meter { | |
5003 | long long int created; /* Time created. */ | |
5004 | struct list rules; /* List of "struct rule_dpif"s. */ | |
5005 | ofproto_meter_id provider_meter_id; | |
5006 | uint16_t flags; /* Meter flags. */ | |
5007 | uint16_t n_bands; /* Number of meter bands. */ | |
5008 | struct ofputil_meter_band *bands; | |
5009 | }; | |
5010 | ||
5011 | /* | |
5012 | * This is used in instruction validation at flow set-up time, | |
5013 | * as flows may not use non-existing meters. | |
9cae45dc JR |
5014 | * Return value of UINT32_MAX signifies an invalid meter. |
5015 | */ | |
65efd2ab JR |
5016 | static uint32_t |
5017 | get_provider_meter_id(const struct ofproto *ofproto, uint32_t of_meter_id) | |
9cae45dc JR |
5018 | { |
5019 | if (of_meter_id && of_meter_id <= ofproto->meter_features.max_meters) { | |
5020 | const struct meter *meter = ofproto->meters[of_meter_id]; | |
5021 | if (meter) { | |
5022 | return meter->provider_meter_id.uint32; | |
5023 | } | |
5024 | } | |
5025 | return UINT32_MAX; | |
5026 | } | |
5027 | ||
5028 | static void | |
5029 | meter_update(struct meter *meter, const struct ofputil_meter_config *config) | |
5030 | { | |
5031 | free(meter->bands); | |
5032 | ||
5033 | meter->flags = config->flags; | |
5034 | meter->n_bands = config->n_bands; | |
5035 | meter->bands = xmemdup(config->bands, | |
5036 | config->n_bands * sizeof *meter->bands); | |
5037 | } | |
5038 | ||
5039 | static struct meter * | |
5040 | meter_create(const struct ofputil_meter_config *config, | |
5041 | ofproto_meter_id provider_meter_id) | |
5042 | { | |
5043 | struct meter *meter; | |
5044 | ||
5045 | meter = xzalloc(sizeof *meter); | |
5046 | meter->provider_meter_id = provider_meter_id; | |
5047 | meter->created = time_msec(); | |
5048 | list_init(&meter->rules); | |
5049 | ||
5050 | meter_update(meter, config); | |
5051 | ||
5052 | return meter; | |
5053 | } | |
5054 | ||
6b3f7f02 JR |
5055 | static void |
5056 | meter_delete(struct ofproto *ofproto, uint32_t first, uint32_t last) | |
15aaf599 | 5057 | OVS_REQUIRES(ofproto_mutex) |
6b3f7f02 JR |
5058 | { |
5059 | uint32_t mid; | |
5060 | for (mid = first; mid <= last; ++mid) { | |
5061 | struct meter *meter = ofproto->meters[mid]; | |
5062 | if (meter) { | |
5063 | ofproto->meters[mid] = NULL; | |
5064 | ofproto->ofproto_class->meter_del(ofproto, | |
5065 | meter->provider_meter_id); | |
5066 | free(meter->bands); | |
5067 | free(meter); | |
5068 | } | |
5069 | } | |
5070 | } | |
5071 | ||
9cae45dc JR |
5072 | static enum ofperr |
5073 | handle_add_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm) | |
5074 | { | |
5075 | ofproto_meter_id provider_meter_id = { UINT32_MAX }; | |
5076 | struct meter **meterp = &ofproto->meters[mm->meter.meter_id]; | |
5077 | enum ofperr error; | |
5078 | ||
5079 | if (*meterp) { | |
5080 | return OFPERR_OFPMMFC_METER_EXISTS; | |
5081 | } | |
5082 | ||
5083 | error = ofproto->ofproto_class->meter_set(ofproto, &provider_meter_id, | |
5084 | &mm->meter); | |
5085 | if (!error) { | |
5086 | ovs_assert(provider_meter_id.uint32 != UINT32_MAX); | |
5087 | *meterp = meter_create(&mm->meter, provider_meter_id); | |
5088 | } | |
f0f8c6c2 | 5089 | return error; |
9cae45dc JR |
5090 | } |
5091 | ||
5092 | static enum ofperr | |
5093 | handle_modify_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm) | |
5094 | { | |
5095 | struct meter *meter = ofproto->meters[mm->meter.meter_id]; | |
5096 | enum ofperr error; | |
e555eb7c | 5097 | uint32_t provider_meter_id; |
9cae45dc JR |
5098 | |
5099 | if (!meter) { | |
5100 | return OFPERR_OFPMMFC_UNKNOWN_METER; | |
5101 | } | |
5102 | ||
e555eb7c | 5103 | provider_meter_id = meter->provider_meter_id.uint32; |
9cae45dc JR |
5104 | error = ofproto->ofproto_class->meter_set(ofproto, |
5105 | &meter->provider_meter_id, | |
5106 | &mm->meter); | |
e555eb7c | 5107 | ovs_assert(meter->provider_meter_id.uint32 == provider_meter_id); |
9cae45dc JR |
5108 | if (!error) { |
5109 | meter_update(meter, &mm->meter); | |
5110 | } | |
5111 | return error; | |
5112 | } | |
5113 | ||
5114 | static enum ofperr | |
5115 | handle_delete_meter(struct ofconn *ofconn, const struct ofp_header *oh, | |
5116 | struct ofputil_meter_mod *mm) | |
15aaf599 | 5117 | OVS_EXCLUDED(ofproto_mutex) |
9cae45dc JR |
5118 | { |
5119 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5120 | uint32_t meter_id = mm->meter.meter_id; | |
a8e547c1 BP |
5121 | struct rule_collection rules; |
5122 | enum ofperr error = 0; | |
9cae45dc | 5123 | uint32_t first, last; |
9cae45dc JR |
5124 | |
5125 | if (meter_id == OFPM13_ALL) { | |
5126 | first = 1; | |
5127 | last = ofproto->meter_features.max_meters; | |
5128 | } else { | |
5129 | if (!meter_id || meter_id > ofproto->meter_features.max_meters) { | |
5130 | return 0; | |
5131 | } | |
5132 | first = last = meter_id; | |
5133 | } | |
5134 | ||
5135 | /* First delete the rules that use this meter. If any of those rules are | |
5136 | * currently being modified, postpone the whole operation until later. */ | |
a8e547c1 | 5137 | rule_collection_init(&rules); |
15aaf599 | 5138 | ovs_mutex_lock(&ofproto_mutex); |
9cae45dc JR |
5139 | for (meter_id = first; meter_id <= last; ++meter_id) { |
5140 | struct meter *meter = ofproto->meters[meter_id]; | |
5141 | if (meter && !list_is_empty(&meter->rules)) { | |
5142 | struct rule *rule; | |
5143 | ||
5144 | LIST_FOR_EACH (rule, meter_list_node, &meter->rules) { | |
5145 | if (rule->pending) { | |
a8e547c1 BP |
5146 | error = OFPROTO_POSTPONE; |
5147 | goto exit; | |
9cae45dc | 5148 | } |
a8e547c1 | 5149 | rule_collection_add(&rules, rule); |
9cae45dc JR |
5150 | } |
5151 | } | |
5152 | } | |
a8e547c1 | 5153 | if (rules.n > 0) { |
9cae45dc JR |
5154 | delete_flows__(ofproto, ofconn, oh, &rules, OFPRR_METER_DELETE); |
5155 | } | |
5156 | ||
5157 | /* Delete the meters. */ | |
6b3f7f02 | 5158 | meter_delete(ofproto, first, last); |
9cae45dc | 5159 | |
a8e547c1 | 5160 | exit: |
15aaf599 | 5161 | ovs_mutex_unlock(&ofproto_mutex); |
a8e547c1 BP |
5162 | rule_collection_destroy(&rules); |
5163 | ||
5164 | return error; | |
9cae45dc JR |
5165 | } |
5166 | ||
5167 | static enum ofperr | |
5168 | handle_meter_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
5169 | { | |
5170 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5171 | struct ofputil_meter_mod mm; | |
5172 | uint64_t bands_stub[256 / 8]; | |
5173 | struct ofpbuf bands; | |
5174 | uint32_t meter_id; | |
5175 | enum ofperr error; | |
5176 | ||
5177 | error = reject_slave_controller(ofconn); | |
5178 | if (error) { | |
5179 | return error; | |
5180 | } | |
5181 | ||
5182 | ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub); | |
5183 | ||
5184 | error = ofputil_decode_meter_mod(oh, &mm, &bands); | |
5185 | if (error) { | |
5186 | goto exit_free_bands; | |
5187 | } | |
5188 | ||
5189 | meter_id = mm.meter.meter_id; | |
5190 | ||
5191 | if (mm.command != OFPMC13_DELETE) { | |
5192 | /* Fails also when meters are not implemented by the provider. */ | |
b31e8700 | 5193 | if (meter_id == 0 || meter_id > OFPM13_MAX) { |
9cae45dc JR |
5194 | error = OFPERR_OFPMMFC_INVALID_METER; |
5195 | goto exit_free_bands; | |
b31e8700 JR |
5196 | } else if (meter_id > ofproto->meter_features.max_meters) { |
5197 | error = OFPERR_OFPMMFC_OUT_OF_METERS; | |
5198 | goto exit_free_bands; | |
9cae45dc JR |
5199 | } |
5200 | if (mm.meter.n_bands > ofproto->meter_features.max_bands) { | |
5201 | error = OFPERR_OFPMMFC_OUT_OF_BANDS; | |
5202 | goto exit_free_bands; | |
5203 | } | |
5204 | } | |
5205 | ||
5206 | switch (mm.command) { | |
5207 | case OFPMC13_ADD: | |
5208 | error = handle_add_meter(ofproto, &mm); | |
5209 | break; | |
5210 | ||
5211 | case OFPMC13_MODIFY: | |
5212 | error = handle_modify_meter(ofproto, &mm); | |
5213 | break; | |
5214 | ||
5215 | case OFPMC13_DELETE: | |
5216 | error = handle_delete_meter(ofconn, oh, &mm); | |
5217 | break; | |
5218 | ||
5219 | default: | |
5220 | error = OFPERR_OFPMMFC_BAD_COMMAND; | |
5221 | break; | |
5222 | } | |
5223 | ||
5224 | exit_free_bands: | |
5225 | ofpbuf_uninit(&bands); | |
5226 | return error; | |
5227 | } | |
5228 | ||
5229 | static enum ofperr | |
5230 | handle_meter_features_request(struct ofconn *ofconn, | |
5231 | const struct ofp_header *request) | |
5232 | { | |
5233 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5234 | struct ofputil_meter_features features; | |
5235 | struct ofpbuf *b; | |
5236 | ||
5237 | if (ofproto->ofproto_class->meter_get_features) { | |
5238 | ofproto->ofproto_class->meter_get_features(ofproto, &features); | |
5239 | } else { | |
5240 | memset(&features, 0, sizeof features); | |
5241 | } | |
5242 | b = ofputil_encode_meter_features_reply(&features, request); | |
5243 | ||
5244 | ofconn_send_reply(ofconn, b); | |
5245 | return 0; | |
5246 | } | |
5247 | ||
5248 | static enum ofperr | |
5249 | handle_meter_request(struct ofconn *ofconn, const struct ofp_header *request, | |
5250 | enum ofptype type) | |
5251 | { | |
5252 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5253 | struct list replies; | |
5254 | uint64_t bands_stub[256 / 8]; | |
5255 | struct ofpbuf bands; | |
5256 | uint32_t meter_id, first, last; | |
5257 | ||
5258 | ofputil_decode_meter_request(request, &meter_id); | |
5259 | ||
5260 | if (meter_id == OFPM13_ALL) { | |
5261 | first = 1; | |
5262 | last = ofproto->meter_features.max_meters; | |
5263 | } else { | |
5264 | if (!meter_id || meter_id > ofproto->meter_features.max_meters || | |
5265 | !ofproto->meters[meter_id]) { | |
5266 | return OFPERR_OFPMMFC_UNKNOWN_METER; | |
5267 | } | |
5268 | first = last = meter_id; | |
5269 | } | |
5270 | ||
5271 | ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub); | |
5272 | ofpmp_init(&replies, request); | |
5273 | ||
5274 | for (meter_id = first; meter_id <= last; ++meter_id) { | |
5275 | struct meter *meter = ofproto->meters[meter_id]; | |
5276 | if (!meter) { | |
5277 | continue; /* Skip non-existing meters. */ | |
5278 | } | |
261bd854 | 5279 | if (type == OFPTYPE_METER_STATS_REQUEST) { |
9cae45dc JR |
5280 | struct ofputil_meter_stats stats; |
5281 | ||
5282 | stats.meter_id = meter_id; | |
5283 | ||
5284 | /* Provider sets the packet and byte counts, we do the rest. */ | |
5285 | stats.flow_count = list_size(&meter->rules); | |
5286 | calc_duration(meter->created, time_msec(), | |
5287 | &stats.duration_sec, &stats.duration_nsec); | |
5288 | stats.n_bands = meter->n_bands; | |
5289 | ofpbuf_clear(&bands); | |
5290 | stats.bands | |
5291 | = ofpbuf_put_uninit(&bands, | |
5292 | meter->n_bands * sizeof *stats.bands); | |
5293 | ||
5294 | if (!ofproto->ofproto_class->meter_get(ofproto, | |
5295 | meter->provider_meter_id, | |
5296 | &stats)) { | |
5297 | ofputil_append_meter_stats(&replies, &stats); | |
5298 | } | |
5299 | } else { /* type == OFPTYPE_METER_CONFIG_REQUEST */ | |
5300 | struct ofputil_meter_config config; | |
5301 | ||
5302 | config.meter_id = meter_id; | |
5303 | config.flags = meter->flags; | |
5304 | config.n_bands = meter->n_bands; | |
5305 | config.bands = meter->bands; | |
5306 | ofputil_append_meter_config(&replies, &config); | |
5307 | } | |
5308 | } | |
5309 | ||
5310 | ofconn_send_replies(ofconn, &replies); | |
5311 | ofpbuf_uninit(&bands); | |
5312 | return 0; | |
5313 | } | |
5314 | ||
3fc3b679 AZ |
5315 | static bool |
5316 | ofproto_group_lookup__(const struct ofproto *ofproto, uint32_t group_id, | |
5317 | struct ofgroup **group) | |
5318 | OVS_REQ_RDLOCK(ofproto->groups_rwlock) | |
7395c052 | 5319 | { |
7395c052 NZ |
5320 | HMAP_FOR_EACH_IN_BUCKET (*group, hmap_node, |
5321 | hash_int(group_id, 0), &ofproto->groups) { | |
5322 | if ((*group)->group_id == group_id) { | |
7395c052 NZ |
5323 | return true; |
5324 | } | |
5325 | } | |
3fc3b679 | 5326 | |
7395c052 NZ |
5327 | return false; |
5328 | } | |
5329 | ||
3fc3b679 AZ |
5330 | /* If the group exists, this function increments the groups's reference count. |
5331 | * | |
5332 | * Make sure to call ofproto_group_unref() after no longer needing to maintain | |
5333 | * a reference to the group. */ | |
5334 | bool | |
5335 | ofproto_group_lookup(const struct ofproto *ofproto, uint32_t group_id, | |
5336 | struct ofgroup **group) | |
7395c052 | 5337 | { |
3fc3b679 AZ |
5338 | bool found; |
5339 | ||
5340 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
5341 | found = ofproto_group_lookup__(ofproto, group_id, group); | |
5342 | if (found) { | |
5343 | ofproto_group_ref(*group); | |
7395c052 | 5344 | } |
3fc3b679 AZ |
5345 | ovs_rwlock_unlock(&ofproto->groups_rwlock); |
5346 | return found; | |
7395c052 NZ |
5347 | } |
5348 | ||
5349 | static bool | |
7e9f8266 | 5350 | ofproto_group_exists__(const struct ofproto *ofproto, uint32_t group_id) |
7395c052 NZ |
5351 | OVS_REQ_RDLOCK(ofproto->groups_rwlock) |
5352 | { | |
5353 | struct ofgroup *grp; | |
5354 | ||
5355 | HMAP_FOR_EACH_IN_BUCKET (grp, hmap_node, | |
5356 | hash_int(group_id, 0), &ofproto->groups) { | |
5357 | if (grp->group_id == group_id) { | |
5358 | return true; | |
5359 | } | |
5360 | } | |
5361 | return false; | |
5362 | } | |
5363 | ||
7e9f8266 BP |
5364 | static bool |
5365 | ofproto_group_exists(const struct ofproto *ofproto, uint32_t group_id) | |
5366 | OVS_EXCLUDED(ofproto->groups_rwlock) | |
5367 | { | |
5368 | bool exists; | |
5369 | ||
5370 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
5371 | exists = ofproto_group_exists__(ofproto, group_id); | |
5372 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5373 | ||
5374 | return exists; | |
5375 | } | |
5376 | ||
732feb93 SH |
5377 | static uint32_t |
5378 | group_get_ref_count(struct ofgroup *group) | |
5379 | OVS_EXCLUDED(ofproto_mutex) | |
5380 | { | |
eaf004bd | 5381 | struct ofproto *ofproto = CONST_CAST(struct ofproto *, group->ofproto); |
732feb93 SH |
5382 | struct rule_criteria criteria; |
5383 | struct rule_collection rules; | |
5384 | struct match match; | |
5385 | enum ofperr error; | |
5386 | uint32_t count; | |
5387 | ||
5388 | match_init_catchall(&match); | |
5389 | rule_criteria_init(&criteria, 0xff, &match, 0, htonll(0), htonll(0), | |
5390 | OFPP_ANY, group->group_id); | |
5391 | ovs_mutex_lock(&ofproto_mutex); | |
5392 | error = collect_rules_loose(ofproto, &criteria, &rules); | |
5393 | ovs_mutex_unlock(&ofproto_mutex); | |
5394 | rule_criteria_destroy(&criteria); | |
5395 | ||
5396 | count = !error && rules.n < UINT32_MAX ? rules.n : UINT32_MAX; | |
5397 | ||
5398 | rule_collection_destroy(&rules); | |
5399 | return count; | |
5400 | } | |
5401 | ||
7395c052 NZ |
5402 | static void |
5403 | append_group_stats(struct ofgroup *group, struct list *replies) | |
7395c052 NZ |
5404 | { |
5405 | struct ofputil_group_stats ogs; | |
eaf004bd | 5406 | const struct ofproto *ofproto = group->ofproto; |
7395c052 NZ |
5407 | long long int now = time_msec(); |
5408 | int error; | |
5409 | ||
646b2a9c SH |
5410 | ogs.bucket_stats = xmalloc(group->n_buckets * sizeof *ogs.bucket_stats); |
5411 | ||
732feb93 SH |
5412 | /* Provider sets the packet and byte counts, we do the rest. */ |
5413 | ogs.ref_count = group_get_ref_count(group); | |
5414 | ogs.n_buckets = group->n_buckets; | |
5415 | ||
7395c052 NZ |
5416 | error = (ofproto->ofproto_class->group_get_stats |
5417 | ? ofproto->ofproto_class->group_get_stats(group, &ogs) | |
5418 | : EOPNOTSUPP); | |
5419 | if (error) { | |
7395c052 NZ |
5420 | ogs.packet_count = UINT64_MAX; |
5421 | ogs.byte_count = UINT64_MAX; | |
7395c052 NZ |
5422 | memset(ogs.bucket_stats, 0xff, |
5423 | ogs.n_buckets * sizeof *ogs.bucket_stats); | |
5424 | } | |
5425 | ||
5426 | ogs.group_id = group->group_id; | |
5427 | calc_duration(group->created, now, &ogs.duration_sec, &ogs.duration_nsec); | |
5428 | ||
5429 | ofputil_append_group_stats(replies, &ogs); | |
646b2a9c SH |
5430 | |
5431 | free(ogs.bucket_stats); | |
7395c052 NZ |
5432 | } |
5433 | ||
19187a71 BP |
5434 | static void |
5435 | handle_group_request(struct ofconn *ofconn, | |
5436 | const struct ofp_header *request, uint32_t group_id, | |
5437 | void (*cb)(struct ofgroup *, struct list *replies)) | |
7395c052 NZ |
5438 | { |
5439 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
7395c052 | 5440 | struct ofgroup *group; |
19187a71 | 5441 | struct list replies; |
7395c052 NZ |
5442 | |
5443 | ofpmp_init(&replies, request); | |
7395c052 NZ |
5444 | if (group_id == OFPG_ALL) { |
5445 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
5446 | HMAP_FOR_EACH (group, hmap_node, &ofproto->groups) { | |
19187a71 | 5447 | cb(group, &replies); |
7395c052 NZ |
5448 | } |
5449 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5450 | } else { | |
5451 | if (ofproto_group_lookup(ofproto, group_id, &group)) { | |
19187a71 | 5452 | cb(group, &replies); |
809c7548 | 5453 | ofproto_group_unref(group); |
7395c052 NZ |
5454 | } |
5455 | } | |
7395c052 | 5456 | ofconn_send_replies(ofconn, &replies); |
7395c052 NZ |
5457 | } |
5458 | ||
5459 | static enum ofperr | |
19187a71 BP |
5460 | handle_group_stats_request(struct ofconn *ofconn, |
5461 | const struct ofp_header *request) | |
7395c052 | 5462 | { |
19187a71 BP |
5463 | uint32_t group_id; |
5464 | enum ofperr error; | |
7395c052 | 5465 | |
19187a71 BP |
5466 | error = ofputil_decode_group_stats_request(request, &group_id); |
5467 | if (error) { | |
5468 | return error; | |
7395c052 | 5469 | } |
7395c052 | 5470 | |
19187a71 BP |
5471 | handle_group_request(ofconn, request, group_id, append_group_stats); |
5472 | return 0; | |
5473 | } | |
5474 | ||
5475 | static void | |
5476 | append_group_desc(struct ofgroup *group, struct list *replies) | |
5477 | { | |
5478 | struct ofputil_group_desc gds; | |
7395c052 | 5479 | |
19187a71 BP |
5480 | gds.group_id = group->group_id; |
5481 | gds.type = group->type; | |
5482 | ofputil_append_group_desc_reply(&gds, &group->buckets, replies); | |
5483 | } | |
5484 | ||
5485 | static enum ofperr | |
5486 | handle_group_desc_stats_request(struct ofconn *ofconn, | |
5487 | const struct ofp_header *request) | |
5488 | { | |
5489 | handle_group_request(ofconn, request, | |
5490 | ofputil_decode_group_desc_request(request), | |
5491 | append_group_desc); | |
7395c052 NZ |
5492 | return 0; |
5493 | } | |
5494 | ||
5495 | static enum ofperr | |
5496 | handle_group_features_stats_request(struct ofconn *ofconn, | |
5497 | const struct ofp_header *request) | |
5498 | { | |
5499 | struct ofproto *p = ofconn_get_ofproto(ofconn); | |
5500 | struct ofpbuf *msg; | |
5501 | ||
5502 | msg = ofputil_encode_group_features_reply(&p->ogf, request); | |
5503 | if (msg) { | |
5504 | ofconn_send_reply(ofconn, msg); | |
5505 | } | |
5506 | ||
5507 | return 0; | |
5508 | } | |
5509 | ||
e8f9a7bb VG |
5510 | static enum ofperr |
5511 | handle_queue_get_config_request(struct ofconn *ofconn, | |
5512 | const struct ofp_header *oh) | |
5513 | { | |
5514 | struct ofproto *p = ofconn_get_ofproto(ofconn); | |
5515 | struct netdev_queue_dump queue_dump; | |
5516 | struct ofport *ofport; | |
5517 | unsigned int queue_id; | |
5518 | struct ofpbuf *reply; | |
5519 | struct smap details; | |
5520 | ofp_port_t request; | |
5521 | enum ofperr error; | |
5522 | ||
5523 | error = ofputil_decode_queue_get_config_request(oh, &request); | |
5524 | if (error) { | |
5525 | return error; | |
5526 | } | |
5527 | ||
5528 | ofport = ofproto_get_port(p, request); | |
5529 | if (!ofport) { | |
5530 | return OFPERR_OFPQOFC_BAD_PORT; | |
5531 | } | |
5532 | ||
5533 | reply = ofputil_encode_queue_get_config_reply(oh); | |
5534 | ||
5535 | smap_init(&details); | |
5536 | NETDEV_QUEUE_FOR_EACH (&queue_id, &details, &queue_dump, ofport->netdev) { | |
5537 | struct ofputil_queue_config queue; | |
5538 | ||
5539 | /* None of the existing queues have compatible properties, so we | |
5540 | * hard-code omitting min_rate and max_rate. */ | |
5541 | queue.queue_id = queue_id; | |
5542 | queue.min_rate = UINT16_MAX; | |
5543 | queue.max_rate = UINT16_MAX; | |
5544 | ofputil_append_queue_get_config_reply(reply, &queue); | |
5545 | } | |
5546 | smap_destroy(&details); | |
5547 | ||
5548 | ofconn_send_reply(ofconn, reply); | |
5549 | ||
5550 | return 0; | |
5551 | } | |
5552 | ||
809c7548 RW |
5553 | static enum ofperr |
5554 | init_group(struct ofproto *ofproto, struct ofputil_group_mod *gm, | |
5555 | struct ofgroup **ofgroup) | |
5556 | { | |
5557 | enum ofperr error; | |
eaf004bd | 5558 | const long long int now = time_msec(); |
809c7548 RW |
5559 | |
5560 | if (gm->group_id > OFPG_MAX) { | |
5561 | return OFPERR_OFPGMFC_INVALID_GROUP; | |
5562 | } | |
5563 | if (gm->type > OFPGT11_FF) { | |
5564 | return OFPERR_OFPGMFC_BAD_TYPE; | |
5565 | } | |
5566 | ||
5567 | *ofgroup = ofproto->ofproto_class->group_alloc(); | |
5568 | if (!*ofgroup) { | |
5569 | VLOG_WARN_RL(&rl, "%s: failed to allocate group", ofproto->name); | |
5570 | return OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
5571 | } | |
5572 | ||
eaf004bd AZ |
5573 | (*ofgroup)->ofproto = ofproto; |
5574 | *CONST_CAST(uint32_t *, &((*ofgroup)->group_id)) = gm->group_id; | |
5575 | *CONST_CAST(enum ofp11_group_type *, &(*ofgroup)->type) = gm->type; | |
5576 | *CONST_CAST(long long int *, &((*ofgroup)->created)) = now; | |
5577 | *CONST_CAST(long long int *, &((*ofgroup)->modified)) = now; | |
809c7548 RW |
5578 | ovs_refcount_init(&(*ofgroup)->ref_count); |
5579 | ||
5580 | list_move(&(*ofgroup)->buckets, &gm->buckets); | |
eaf004bd AZ |
5581 | *CONST_CAST(uint32_t *, &(*ofgroup)->n_buckets) = |
5582 | list_size(&(*ofgroup)->buckets); | |
809c7548 RW |
5583 | |
5584 | /* Construct called BEFORE any locks are held. */ | |
5585 | error = ofproto->ofproto_class->group_construct(*ofgroup); | |
5586 | if (error) { | |
5587 | ofputil_bucket_list_destroy(&(*ofgroup)->buckets); | |
5588 | ofproto->ofproto_class->group_dealloc(*ofgroup); | |
5589 | } | |
5590 | return error; | |
5591 | } | |
5592 | ||
6c5b90ce BP |
5593 | /* Implements the OFPGC11_ADD operation specified by 'gm', adding a group to |
5594 | * 'ofproto''s group table. Returns 0 on success or an OpenFlow error code on | |
5595 | * failure. */ | |
7395c052 NZ |
5596 | static enum ofperr |
5597 | add_group(struct ofproto *ofproto, struct ofputil_group_mod *gm) | |
5598 | { | |
5599 | struct ofgroup *ofgroup; | |
5600 | enum ofperr error; | |
5601 | ||
7395c052 | 5602 | /* Allocate new group and initialize it. */ |
809c7548 | 5603 | error = init_group(ofproto, gm, &ofgroup); |
7395c052 | 5604 | if (error) { |
809c7548 | 5605 | return error; |
7395c052 NZ |
5606 | } |
5607 | ||
5608 | /* We wrlock as late as possible to minimize the time we jam any other | |
5609 | * threads: No visible state changes before acquiring the lock. */ | |
5610 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
5611 | ||
5612 | if (ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) { | |
5613 | error = OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
5614 | goto unlock_out; | |
5615 | } | |
5616 | ||
7e9f8266 | 5617 | if (ofproto_group_exists__(ofproto, gm->group_id)) { |
7395c052 NZ |
5618 | error = OFPERR_OFPGMFC_GROUP_EXISTS; |
5619 | goto unlock_out; | |
5620 | } | |
5621 | ||
5622 | if (!error) { | |
5623 | /* Insert new group. */ | |
5624 | hmap_insert(&ofproto->groups, &ofgroup->hmap_node, | |
5625 | hash_int(ofgroup->group_id, 0)); | |
5626 | ofproto->n_groups[ofgroup->type]++; | |
5627 | ||
5628 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5629 | return error; | |
5630 | } | |
5631 | ||
5632 | unlock_out: | |
5633 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5634 | ofproto->ofproto_class->group_destruct(ofgroup); | |
7395c052 NZ |
5635 | ofputil_bucket_list_destroy(&ofgroup->buckets); |
5636 | ofproto->ofproto_class->group_dealloc(ofgroup); | |
5637 | ||
5638 | return error; | |
5639 | } | |
5640 | ||
6c5b90ce BP |
5641 | /* Implements OFPGC11_MODIFY. Returns 0 on success or an OpenFlow error code |
5642 | * on failure. | |
7395c052 | 5643 | * |
809c7548 RW |
5644 | * Note that the group is re-created and then replaces the old group in |
5645 | * ofproto's ofgroup hash map. Thus, the group is never altered while users of | |
6c5b90ce | 5646 | * the xlate module hold a pointer to the group. */ |
7395c052 NZ |
5647 | static enum ofperr |
5648 | modify_group(struct ofproto *ofproto, struct ofputil_group_mod *gm) | |
5649 | { | |
809c7548 | 5650 | struct ofgroup *ofgroup, *new_ofgroup, *retiring; |
7395c052 NZ |
5651 | enum ofperr error; |
5652 | ||
809c7548 RW |
5653 | error = init_group(ofproto, gm, &new_ofgroup); |
5654 | if (error) { | |
5655 | return error; | |
7395c052 NZ |
5656 | } |
5657 | ||
809c7548 | 5658 | retiring = new_ofgroup; |
7395c052 | 5659 | |
3fc3b679 AZ |
5660 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); |
5661 | if (!ofproto_group_lookup__(ofproto, gm->group_id, &ofgroup)) { | |
7395c052 | 5662 | error = OFPERR_OFPGMFC_UNKNOWN_GROUP; |
809c7548 | 5663 | goto out; |
7395c052 | 5664 | } |
809c7548 RW |
5665 | |
5666 | /* Ofproto's group write lock is held now. */ | |
7395c052 NZ |
5667 | if (ofgroup->type != gm->type |
5668 | && ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) { | |
5669 | error = OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
809c7548 | 5670 | goto out; |
7395c052 NZ |
5671 | } |
5672 | ||
809c7548 | 5673 | /* The group creation time does not change during modification. */ |
eaf004bd AZ |
5674 | *CONST_CAST(long long int *, &(new_ofgroup->created)) = ofgroup->created; |
5675 | *CONST_CAST(long long int *, &(new_ofgroup->modified)) = time_msec(); | |
7395c052 | 5676 | |
809c7548 RW |
5677 | error = ofproto->ofproto_class->group_modify(new_ofgroup); |
5678 | if (error) { | |
5679 | goto out; | |
5680 | } | |
7395c052 | 5681 | |
809c7548 RW |
5682 | retiring = ofgroup; |
5683 | /* Replace ofgroup in ofproto's groups hash map with new_ofgroup. */ | |
5684 | hmap_remove(&ofproto->groups, &ofgroup->hmap_node); | |
5685 | hmap_insert(&ofproto->groups, &new_ofgroup->hmap_node, | |
5686 | hash_int(new_ofgroup->group_id, 0)); | |
5687 | if (ofgroup->type != new_ofgroup->type) { | |
5688 | ofproto->n_groups[ofgroup->type]--; | |
5689 | ofproto->n_groups[new_ofgroup->type]++; | |
7395c052 NZ |
5690 | } |
5691 | ||
809c7548 RW |
5692 | out: |
5693 | ofproto_group_unref(retiring); | |
7395c052 | 5694 | ovs_rwlock_unlock(&ofproto->groups_rwlock); |
7395c052 NZ |
5695 | return error; |
5696 | } | |
5697 | ||
5698 | static void | |
5699 | delete_group__(struct ofproto *ofproto, struct ofgroup *ofgroup) | |
5700 | OVS_RELEASES(ofproto->groups_rwlock) | |
5701 | { | |
276f6518 SH |
5702 | struct match match; |
5703 | struct ofputil_flow_mod fm; | |
5704 | ||
5705 | /* Delete all flow entries containing this group in a group action */ | |
5706 | match_init_catchall(&match); | |
5707 | flow_mod_init(&fm, &match, 0, NULL, 0, OFPFC_DELETE); | |
5708 | fm.out_group = ofgroup->group_id; | |
5709 | handle_flow_mod__(ofproto, NULL, &fm, NULL); | |
5710 | ||
7395c052 NZ |
5711 | hmap_remove(&ofproto->groups, &ofgroup->hmap_node); |
5712 | /* No-one can find this group any more. */ | |
5713 | ofproto->n_groups[ofgroup->type]--; | |
5714 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
809c7548 | 5715 | ofproto_group_unref(ofgroup); |
7395c052 NZ |
5716 | } |
5717 | ||
6c5b90ce | 5718 | /* Implements OFPGC11_DELETE. */ |
7395c052 NZ |
5719 | static void |
5720 | delete_group(struct ofproto *ofproto, uint32_t group_id) | |
5721 | { | |
5722 | struct ofgroup *ofgroup; | |
5723 | ||
5724 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
5725 | if (group_id == OFPG_ALL) { | |
5726 | for (;;) { | |
5727 | struct hmap_node *node = hmap_first(&ofproto->groups); | |
5728 | if (!node) { | |
5729 | break; | |
5730 | } | |
5731 | ofgroup = CONTAINER_OF(node, struct ofgroup, hmap_node); | |
5732 | delete_group__(ofproto, ofgroup); | |
5733 | /* Lock for each node separately, so that we will not jam the | |
5734 | * other threads for too long time. */ | |
5735 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
5736 | } | |
5737 | } else { | |
5738 | HMAP_FOR_EACH_IN_BUCKET (ofgroup, hmap_node, | |
5739 | hash_int(group_id, 0), &ofproto->groups) { | |
5740 | if (ofgroup->group_id == group_id) { | |
5741 | delete_group__(ofproto, ofgroup); | |
5742 | return; | |
5743 | } | |
5744 | } | |
5745 | } | |
5746 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5747 | } | |
5748 | ||
5749 | static enum ofperr | |
5750 | handle_group_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
5751 | { | |
5752 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5753 | struct ofputil_group_mod gm; | |
5754 | enum ofperr error; | |
5755 | ||
5756 | error = reject_slave_controller(ofconn); | |
5757 | if (error) { | |
5758 | return error; | |
5759 | } | |
5760 | ||
5761 | error = ofputil_decode_group_mod(oh, &gm); | |
5762 | if (error) { | |
5763 | return error; | |
5764 | } | |
5765 | ||
5766 | switch (gm.command) { | |
5767 | case OFPGC11_ADD: | |
5768 | return add_group(ofproto, &gm); | |
5769 | ||
5770 | case OFPGC11_MODIFY: | |
5771 | return modify_group(ofproto, &gm); | |
5772 | ||
5773 | case OFPGC11_DELETE: | |
5774 | delete_group(ofproto, gm.group_id); | |
5775 | return 0; | |
5776 | ||
5777 | default: | |
5778 | if (gm.command > OFPGC11_DELETE) { | |
5779 | VLOG_WARN_RL(&rl, "%s: Invalid group_mod command type %d", | |
5780 | ofproto->name, gm.command); | |
5781 | } | |
5782 | return OFPERR_OFPGMFC_BAD_COMMAND; | |
5783 | } | |
5784 | } | |
5785 | ||
6b83a3c5 SH |
5786 | enum ofproto_table_config |
5787 | ofproto_table_get_config(const struct ofproto *ofproto, uint8_t table_id) | |
6d328fa2 SH |
5788 | { |
5789 | unsigned int value; | |
5790 | atomic_read(&ofproto->tables[table_id].config, &value); | |
6b83a3c5 | 5791 | return (enum ofproto_table_config)value; |
6d328fa2 SH |
5792 | } |
5793 | ||
67761761 SH |
5794 | static enum ofperr |
5795 | table_mod(struct ofproto *ofproto, const struct ofputil_table_mod *tm) | |
5796 | { | |
6d328fa2 SH |
5797 | /* Only accept currently supported configurations */ |
5798 | if (tm->config & ~OFPTC11_TABLE_MISS_MASK) { | |
5799 | return OFPERR_OFPTMFC_BAD_CONFIG; | |
5800 | } | |
67761761 SH |
5801 | |
5802 | if (tm->table_id == OFPTT_ALL) { | |
5803 | int i; | |
5804 | for (i = 0; i < ofproto->n_tables; i++) { | |
5805 | atomic_store(&ofproto->tables[i].config, | |
5806 | (unsigned int)tm->config); | |
5807 | } | |
5808 | } else if (!check_table_id(ofproto, tm->table_id)) { | |
5809 | return OFPERR_OFPTMFC_BAD_TABLE; | |
5810 | } else { | |
5811 | atomic_store(&ofproto->tables[tm->table_id].config, | |
5812 | (unsigned int)tm->config); | |
5813 | } | |
5814 | ||
5815 | return 0; | |
5816 | } | |
5817 | ||
918f2b82 AZ |
5818 | static enum ofperr |
5819 | handle_table_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
5820 | { | |
67761761 | 5821 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
918f2b82 AZ |
5822 | struct ofputil_table_mod tm; |
5823 | enum ofperr error; | |
5824 | ||
5825 | error = reject_slave_controller(ofconn); | |
5826 | if (error) { | |
5827 | return error; | |
5828 | } | |
5829 | ||
5830 | error = ofputil_decode_table_mod(oh, &tm); | |
5831 | if (error) { | |
5832 | return error; | |
5833 | } | |
5834 | ||
67761761 | 5835 | return table_mod(ofproto, &tm); |
918f2b82 AZ |
5836 | } |
5837 | ||
777af88d AC |
5838 | static enum ofperr |
5839 | handle_bundle_control(struct ofconn *ofconn, const struct ofp_header *oh) | |
5840 | { | |
5841 | enum ofperr error; | |
5842 | struct ofputil_bundle_ctrl_msg bctrl; | |
5843 | struct ofpbuf *buf; | |
5844 | struct ofputil_bundle_ctrl_msg reply; | |
5845 | ||
5846 | error = ofputil_decode_bundle_ctrl(oh, &bctrl); | |
5847 | if (error) { | |
5848 | return error; | |
5849 | } | |
5850 | reply.flags = 0; | |
5851 | reply.bundle_id = bctrl.bundle_id; | |
5852 | ||
5853 | switch (bctrl.type) { | |
5854 | case OFPBCT_OPEN_REQUEST: | |
5855 | error = ofp_bundle_open(ofconn, bctrl.bundle_id, bctrl.flags); | |
5856 | reply.type = OFPBCT_OPEN_REPLY; | |
5857 | break; | |
5858 | case OFPBCT_CLOSE_REQUEST: | |
5859 | error = ofp_bundle_close(ofconn, bctrl.bundle_id, bctrl.flags); | |
5860 | reply.type = OFPBCT_CLOSE_REPLY;; | |
5861 | break; | |
5862 | case OFPBCT_COMMIT_REQUEST: | |
5863 | error = ofp_bundle_commit(ofconn, bctrl.bundle_id, bctrl.flags); | |
5864 | reply.type = OFPBCT_COMMIT_REPLY; | |
5865 | break; | |
5866 | case OFPBCT_DISCARD_REQUEST: | |
5867 | error = ofp_bundle_discard(ofconn, bctrl.bundle_id); | |
5868 | reply.type = OFPBCT_DISCARD_REPLY; | |
5869 | break; | |
5870 | ||
5871 | case OFPBCT_OPEN_REPLY: | |
5872 | case OFPBCT_CLOSE_REPLY: | |
5873 | case OFPBCT_COMMIT_REPLY: | |
5874 | case OFPBCT_DISCARD_REPLY: | |
5875 | return OFPERR_OFPBFC_BAD_TYPE; | |
5876 | break; | |
5877 | } | |
5878 | ||
5879 | if (!error) { | |
5880 | buf = ofputil_encode_bundle_ctrl_reply(oh, &reply); | |
5881 | ofconn_send_reply(ofconn, buf); | |
5882 | } | |
5883 | return error; | |
5884 | } | |
5885 | ||
5886 | ||
5887 | static enum ofperr | |
5888 | handle_bundle_add(struct ofconn *ofconn, const struct ofp_header *oh) | |
5889 | { | |
5890 | enum ofperr error; | |
5891 | struct ofputil_bundle_add_msg badd; | |
5892 | ||
5893 | error = ofputil_decode_bundle_add(oh, &badd); | |
5894 | if (error) { | |
5895 | return error; | |
5896 | } | |
5897 | ||
5898 | return ofp_bundle_add_message(ofconn, &badd); | |
5899 | } | |
5900 | ||
90bf1e07 | 5901 | static enum ofperr |
d1e2cf21 | 5902 | handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg) |
15aaf599 | 5903 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 5904 | { |
1f317cb5 | 5905 | const struct ofp_header *oh = ofpbuf_data(msg); |
982697a4 | 5906 | enum ofptype type; |
90bf1e07 | 5907 | enum ofperr error; |
064af421 | 5908 | |
982697a4 | 5909 | error = ofptype_decode(&type, oh); |
d1e2cf21 BP |
5910 | if (error) { |
5911 | return error; | |
5912 | } | |
ff3c2c63 YT |
5913 | if (oh->version >= OFP13_VERSION && ofpmsg_is_stat_request(oh) |
5914 | && ofpmp_more(oh)) { | |
5915 | /* We have no buffer implementation for multipart requests. | |
5916 | * Report overflow for requests which consists of multiple | |
5917 | * messages. */ | |
5918 | return OFPERR_OFPBRC_MULTIPART_BUFFER_OVERFLOW; | |
5919 | } | |
064af421 | 5920 | |
982697a4 | 5921 | switch (type) { |
d1e2cf21 | 5922 | /* OpenFlow requests. */ |
982697a4 | 5923 | case OFPTYPE_ECHO_REQUEST: |
d1e2cf21 | 5924 | return handle_echo_request(ofconn, oh); |
064af421 | 5925 | |
982697a4 | 5926 | case OFPTYPE_FEATURES_REQUEST: |
d1e2cf21 | 5927 | return handle_features_request(ofconn, oh); |
064af421 | 5928 | |
982697a4 | 5929 | case OFPTYPE_GET_CONFIG_REQUEST: |
d1e2cf21 | 5930 | return handle_get_config_request(ofconn, oh); |
064af421 | 5931 | |
982697a4 BP |
5932 | case OFPTYPE_SET_CONFIG: |
5933 | return handle_set_config(ofconn, oh); | |
064af421 | 5934 | |
982697a4 BP |
5935 | case OFPTYPE_PACKET_OUT: |
5936 | return handle_packet_out(ofconn, oh); | |
064af421 | 5937 | |
982697a4 | 5938 | case OFPTYPE_PORT_MOD: |
d1e2cf21 | 5939 | return handle_port_mod(ofconn, oh); |
064af421 | 5940 | |
982697a4 | 5941 | case OFPTYPE_FLOW_MOD: |
2e4f5fcf | 5942 | return handle_flow_mod(ofconn, oh); |
064af421 | 5943 | |
7395c052 NZ |
5944 | case OFPTYPE_GROUP_MOD: |
5945 | return handle_group_mod(ofconn, oh); | |
5946 | ||
918f2b82 AZ |
5947 | case OFPTYPE_TABLE_MOD: |
5948 | return handle_table_mod(ofconn, oh); | |
5949 | ||
9cae45dc JR |
5950 | case OFPTYPE_METER_MOD: |
5951 | return handle_meter_mod(ofconn, oh); | |
5952 | ||
982697a4 | 5953 | case OFPTYPE_BARRIER_REQUEST: |
d1e2cf21 | 5954 | return handle_barrier_request(ofconn, oh); |
064af421 | 5955 | |
6ea4776b JR |
5956 | case OFPTYPE_ROLE_REQUEST: |
5957 | return handle_role_request(ofconn, oh); | |
5958 | ||
d1e2cf21 | 5959 | /* OpenFlow replies. */ |
982697a4 | 5960 | case OFPTYPE_ECHO_REPLY: |
d1e2cf21 | 5961 | return 0; |
246e61ea | 5962 | |
d1e2cf21 | 5963 | /* Nicira extension requests. */ |
982697a4 | 5964 | case OFPTYPE_FLOW_MOD_TABLE_ID: |
6c1491fb | 5965 | return handle_nxt_flow_mod_table_id(ofconn, oh); |
d1e2cf21 | 5966 | |
982697a4 | 5967 | case OFPTYPE_SET_FLOW_FORMAT: |
d1e2cf21 BP |
5968 | return handle_nxt_set_flow_format(ofconn, oh); |
5969 | ||
982697a4 | 5970 | case OFPTYPE_SET_PACKET_IN_FORMAT: |
54834960 EJ |
5971 | return handle_nxt_set_packet_in_format(ofconn, oh); |
5972 | ||
982697a4 | 5973 | case OFPTYPE_SET_CONTROLLER_ID: |
a7349929 BP |
5974 | return handle_nxt_set_controller_id(ofconn, oh); |
5975 | ||
982697a4 | 5976 | case OFPTYPE_FLOW_AGE: |
f27f2134 BP |
5977 | /* Nothing to do. */ |
5978 | return 0; | |
5979 | ||
982697a4 | 5980 | case OFPTYPE_FLOW_MONITOR_CANCEL: |
2b07c8b1 BP |
5981 | return handle_flow_monitor_cancel(ofconn, oh); |
5982 | ||
982697a4 | 5983 | case OFPTYPE_SET_ASYNC_CONFIG: |
80d5aefd BP |
5984 | return handle_nxt_set_async_config(ofconn, oh); |
5985 | ||
c423b3b3 AC |
5986 | case OFPTYPE_GET_ASYNC_REQUEST: |
5987 | return handle_nxt_get_async_request(ofconn, oh); | |
5988 | ||
349adfb2 | 5989 | /* Statistics requests. */ |
982697a4 BP |
5990 | case OFPTYPE_DESC_STATS_REQUEST: |
5991 | return handle_desc_stats_request(ofconn, oh); | |
5992 | ||
5993 | case OFPTYPE_FLOW_STATS_REQUEST: | |
5994 | return handle_flow_stats_request(ofconn, oh); | |
5995 | ||
5996 | case OFPTYPE_AGGREGATE_STATS_REQUEST: | |
5997 | return handle_aggregate_stats_request(ofconn, oh); | |
5998 | ||
5999 | case OFPTYPE_TABLE_STATS_REQUEST: | |
6000 | return handle_table_stats_request(ofconn, oh); | |
6001 | ||
6002 | case OFPTYPE_PORT_STATS_REQUEST: | |
6003 | return handle_port_stats_request(ofconn, oh); | |
6004 | ||
6005 | case OFPTYPE_QUEUE_STATS_REQUEST: | |
6006 | return handle_queue_stats_request(ofconn, oh); | |
6007 | ||
6008 | case OFPTYPE_PORT_DESC_STATS_REQUEST: | |
6009 | return handle_port_desc_stats_request(ofconn, oh); | |
6010 | ||
6011 | case OFPTYPE_FLOW_MONITOR_STATS_REQUEST: | |
6012 | return handle_flow_monitor_request(ofconn, oh); | |
6013 | ||
261bd854 BP |
6014 | case OFPTYPE_METER_STATS_REQUEST: |
6015 | case OFPTYPE_METER_CONFIG_STATS_REQUEST: | |
9cae45dc JR |
6016 | return handle_meter_request(ofconn, oh, type); |
6017 | ||
261bd854 | 6018 | case OFPTYPE_METER_FEATURES_STATS_REQUEST: |
9cae45dc JR |
6019 | return handle_meter_features_request(ofconn, oh); |
6020 | ||
261bd854 | 6021 | case OFPTYPE_GROUP_STATS_REQUEST: |
7395c052 NZ |
6022 | return handle_group_stats_request(ofconn, oh); |
6023 | ||
261bd854 | 6024 | case OFPTYPE_GROUP_DESC_STATS_REQUEST: |
7395c052 NZ |
6025 | return handle_group_desc_stats_request(ofconn, oh); |
6026 | ||
261bd854 | 6027 | case OFPTYPE_GROUP_FEATURES_STATS_REQUEST: |
7395c052 NZ |
6028 | return handle_group_features_stats_request(ofconn, oh); |
6029 | ||
7395c052 | 6030 | case OFPTYPE_QUEUE_GET_CONFIG_REQUEST: |
e8f9a7bb | 6031 | return handle_queue_get_config_request(ofconn, oh); |
2e1ae200 | 6032 | |
777af88d AC |
6033 | case OFPTYPE_BUNDLE_CONTROL: |
6034 | return handle_bundle_control(ofconn, oh); | |
6035 | ||
6036 | case OFPTYPE_BUNDLE_ADD_MESSAGE: | |
6037 | return handle_bundle_add(ofconn, oh); | |
6038 | ||
982697a4 BP |
6039 | case OFPTYPE_HELLO: |
6040 | case OFPTYPE_ERROR: | |
6041 | case OFPTYPE_FEATURES_REPLY: | |
6042 | case OFPTYPE_GET_CONFIG_REPLY: | |
6043 | case OFPTYPE_PACKET_IN: | |
6044 | case OFPTYPE_FLOW_REMOVED: | |
6045 | case OFPTYPE_PORT_STATUS: | |
6046 | case OFPTYPE_BARRIER_REPLY: | |
c545d38d | 6047 | case OFPTYPE_QUEUE_GET_CONFIG_REPLY: |
982697a4 BP |
6048 | case OFPTYPE_DESC_STATS_REPLY: |
6049 | case OFPTYPE_FLOW_STATS_REPLY: | |
6050 | case OFPTYPE_QUEUE_STATS_REPLY: | |
6051 | case OFPTYPE_PORT_STATS_REPLY: | |
6052 | case OFPTYPE_TABLE_STATS_REPLY: | |
6053 | case OFPTYPE_AGGREGATE_STATS_REPLY: | |
6054 | case OFPTYPE_PORT_DESC_STATS_REPLY: | |
6055 | case OFPTYPE_ROLE_REPLY: | |
6056 | case OFPTYPE_FLOW_MONITOR_PAUSED: | |
6057 | case OFPTYPE_FLOW_MONITOR_RESUMED: | |
6058 | case OFPTYPE_FLOW_MONITOR_STATS_REPLY: | |
2e1ae200 | 6059 | case OFPTYPE_GET_ASYNC_REPLY: |
261bd854 BP |
6060 | case OFPTYPE_GROUP_STATS_REPLY: |
6061 | case OFPTYPE_GROUP_DESC_STATS_REPLY: | |
6062 | case OFPTYPE_GROUP_FEATURES_STATS_REPLY: | |
6063 | case OFPTYPE_METER_STATS_REPLY: | |
6064 | case OFPTYPE_METER_CONFIG_STATS_REPLY: | |
6065 | case OFPTYPE_METER_FEATURES_STATS_REPLY: | |
e8f9a7bb | 6066 | case OFPTYPE_TABLE_FEATURES_STATS_REQUEST: |
261bd854 | 6067 | case OFPTYPE_TABLE_FEATURES_STATS_REPLY: |
252f3411 | 6068 | case OFPTYPE_ROLE_STATUS: |
064af421 | 6069 | default: |
76ec08e0 YT |
6070 | if (ofpmsg_is_stat_request(oh)) { |
6071 | return OFPERR_OFPBRC_BAD_STAT; | |
6072 | } else { | |
6073 | return OFPERR_OFPBRC_BAD_TYPE; | |
6074 | } | |
064af421 | 6075 | } |
d1e2cf21 | 6076 | } |
064af421 | 6077 | |
7ee20df1 | 6078 | static bool |
e03248b7 | 6079 | handle_openflow(struct ofconn *ofconn, const struct ofpbuf *ofp_msg) |
15aaf599 | 6080 | OVS_EXCLUDED(ofproto_mutex) |
d1e2cf21 BP |
6081 | { |
6082 | int error = handle_openflow__(ofconn, ofp_msg); | |
7ee20df1 | 6083 | if (error && error != OFPROTO_POSTPONE) { |
1f317cb5 | 6084 | ofconn_send_error(ofconn, ofpbuf_data(ofp_msg), error); |
064af421 | 6085 | } |
d1e2cf21 | 6086 | COVERAGE_INC(ofproto_recv_openflow); |
7ee20df1 BP |
6087 | return error != OFPROTO_POSTPONE; |
6088 | } | |
6089 | \f | |
6090 | /* Asynchronous operations. */ | |
6091 | ||
6092 | /* Creates and returns a new ofopgroup that is not associated with any | |
6093 | * OpenFlow connection. | |
6094 | * | |
6095 | * The caller should add operations to the returned group with | |
6096 | * ofoperation_create() and then submit it with ofopgroup_submit(). */ | |
6097 | static struct ofopgroup * | |
7024dffe | 6098 | ofopgroup_create_unattached(struct ofproto *ofproto) |
15aaf599 | 6099 | OVS_REQUIRES(ofproto_mutex) |
7ee20df1 BP |
6100 | { |
6101 | struct ofopgroup *group = xzalloc(sizeof *group); | |
6102 | group->ofproto = ofproto; | |
6103 | list_init(&group->ofproto_node); | |
6104 | list_init(&group->ops); | |
6105 | list_init(&group->ofconn_node); | |
6106 | return group; | |
6107 | } | |
6108 | ||
7024dffe BP |
6109 | /* Creates and returns a new ofopgroup for 'ofproto'. |
6110 | * | |
6111 | * If 'ofconn' is NULL, the new ofopgroup is not associated with any OpenFlow | |
6112 | * connection. The 'request' and 'buffer_id' arguments are ignored. | |
6113 | * | |
6114 | * If 'ofconn' is nonnull, then the new ofopgroup is associated with 'ofconn'. | |
6115 | * If the ofopgroup eventually fails, then the error reply will include | |
6116 | * 'request'. If the ofopgroup eventually succeeds, then the packet with | |
6117 | * buffer id 'buffer_id' on 'ofconn' will be sent by 'ofconn''s ofproto. | |
7ee20df1 BP |
6118 | * |
6119 | * The caller should add operations to the returned group with | |
6120 | * ofoperation_create() and then submit it with ofopgroup_submit(). */ | |
6121 | static struct ofopgroup * | |
7024dffe BP |
6122 | ofopgroup_create(struct ofproto *ofproto, struct ofconn *ofconn, |
6123 | const struct ofp_header *request, uint32_t buffer_id) | |
15aaf599 | 6124 | OVS_REQUIRES(ofproto_mutex) |
7ee20df1 | 6125 | { |
7024dffe BP |
6126 | struct ofopgroup *group = ofopgroup_create_unattached(ofproto); |
6127 | if (ofconn) { | |
6128 | size_t request_len = ntohs(request->length); | |
7ee20df1 | 6129 | |
cb22974d | 6130 | ovs_assert(ofconn_get_ofproto(ofconn) == ofproto); |
7ee20df1 | 6131 | |
7024dffe BP |
6132 | ofconn_add_opgroup(ofconn, &group->ofconn_node); |
6133 | group->ofconn = ofconn; | |
6134 | group->request = xmemdup(request, MIN(request_len, 64)); | |
6135 | group->buffer_id = buffer_id; | |
6136 | } | |
7ee20df1 BP |
6137 | return group; |
6138 | } | |
6139 | ||
6140 | /* Submits 'group' for processing. | |
6141 | * | |
6142 | * If 'group' contains no operations (e.g. none were ever added, or all of the | |
6143 | * ones that were added completed synchronously), then it is destroyed | |
6144 | * immediately. Otherwise it is added to the ofproto's list of pending | |
6145 | * groups. */ | |
6146 | static void | |
6147 | ofopgroup_submit(struct ofopgroup *group) | |
15aaf599 | 6148 | OVS_REQUIRES(ofproto_mutex) |
7ee20df1 | 6149 | { |
e615b0a3 BP |
6150 | if (!group->n_running) { |
6151 | ofopgroup_complete(group); | |
7ee20df1 BP |
6152 | } else { |
6153 | list_push_back(&group->ofproto->pending, &group->ofproto_node); | |
dd5616b3 | 6154 | group->ofproto->n_pending++; |
7ee20df1 BP |
6155 | } |
6156 | } | |
6157 | ||
6158 | static void | |
e615b0a3 | 6159 | ofopgroup_complete(struct ofopgroup *group) |
15aaf599 | 6160 | OVS_REQUIRES(ofproto_mutex) |
7ee20df1 | 6161 | { |
e615b0a3 | 6162 | struct ofproto *ofproto = group->ofproto; |
2b07c8b1 BP |
6163 | |
6164 | struct ofconn *abbrev_ofconn; | |
6165 | ovs_be32 abbrev_xid; | |
6166 | ||
e615b0a3 BP |
6167 | struct ofoperation *op, *next_op; |
6168 | int error; | |
6169 | ||
cb22974d | 6170 | ovs_assert(!group->n_running); |
e615b0a3 BP |
6171 | |
6172 | error = 0; | |
6173 | LIST_FOR_EACH (op, group_node, &group->ops) { | |
6174 | if (op->error) { | |
6175 | error = op->error; | |
6176 | break; | |
6177 | } | |
6178 | } | |
6179 | ||
6180 | if (!error && group->ofconn && group->buffer_id != UINT32_MAX) { | |
6181 | LIST_FOR_EACH (op, group_node, &group->ops) { | |
6182 | if (op->type != OFOPERATION_DELETE) { | |
6183 | struct ofpbuf *packet; | |
4e022ec0 | 6184 | ofp_port_t in_port; |
e615b0a3 BP |
6185 | |
6186 | error = ofconn_pktbuf_retrieve(group->ofconn, group->buffer_id, | |
6187 | &packet, &in_port); | |
6188 | if (packet) { | |
35412852 BP |
6189 | struct rule_execute *re; |
6190 | ||
cb22974d | 6191 | ovs_assert(!error); |
35412852 BP |
6192 | |
6193 | ofproto_rule_ref(op->rule); | |
6194 | ||
6195 | re = xmalloc(sizeof *re); | |
6196 | re->rule = op->rule; | |
6197 | re->in_port = in_port; | |
6198 | re->packet = packet; | |
6199 | ||
6200 | if (!guarded_list_push_back(&ofproto->rule_executes, | |
6201 | &re->list_node, 1024)) { | |
6202 | ofproto_rule_unref(op->rule); | |
6203 | ofpbuf_delete(re->packet); | |
6204 | free(re); | |
6205 | } | |
e615b0a3 BP |
6206 | } |
6207 | break; | |
6208 | } | |
6209 | } | |
6210 | } | |
6211 | ||
2b07c8b1 BP |
6212 | if (!error && !list_is_empty(&group->ofconn_node)) { |
6213 | abbrev_ofconn = group->ofconn; | |
6214 | abbrev_xid = group->request->xid; | |
6215 | } else { | |
6216 | abbrev_ofconn = NULL; | |
6217 | abbrev_xid = htonl(0); | |
6218 | } | |
e615b0a3 BP |
6219 | LIST_FOR_EACH_SAFE (op, next_op, group_node, &group->ops) { |
6220 | struct rule *rule = op->rule; | |
2b07c8b1 | 6221 | |
644e2a7c BP |
6222 | /* We generally want to report the change to active OpenFlow flow |
6223 | monitors (e.g. NXST_FLOW_MONITOR). There are three exceptions: | |
6224 | ||
6225 | - The operation failed. | |
6226 | ||
6227 | - The affected rule is not visible to controllers. | |
6228 | ||
6229 | - The operation's only effect was to update rule->modified. */ | |
6230 | if (!(op->error | |
6231 | || ofproto_rule_is_hidden(rule) | |
6232 | || (op->type == OFOPERATION_MODIFY | |
ee088a75 | 6233 | && !op->actions |
644e2a7c | 6234 | && rule->flow_cookie == op->flow_cookie))) { |
b277c7cc BP |
6235 | enum nx_flow_update_event event_type; |
6236 | ||
6237 | switch (op->type) { | |
6238 | case OFOPERATION_ADD: | |
6239 | case OFOPERATION_REPLACE: | |
6240 | event_type = NXFME_ADDED; | |
6241 | break; | |
6242 | ||
6243 | case OFOPERATION_DELETE: | |
6244 | event_type = NXFME_DELETED; | |
6245 | break; | |
6246 | ||
6247 | case OFOPERATION_MODIFY: | |
6248 | event_type = NXFME_MODIFIED; | |
6249 | break; | |
6250 | ||
6251 | default: | |
428b2edd | 6252 | OVS_NOT_REACHED(); |
b277c7cc BP |
6253 | } |
6254 | ||
6255 | ofmonitor_report(ofproto->connmgr, rule, event_type, | |
2b07c8b1 BP |
6256 | op->reason, abbrev_ofconn, abbrev_xid); |
6257 | } | |
6258 | ||
e615b0a3 BP |
6259 | rule->pending = NULL; |
6260 | ||
6261 | switch (op->type) { | |
6262 | case OFOPERATION_ADD: | |
6263 | if (!op->error) { | |
5cb7a798 BP |
6264 | uint16_t vid_mask; |
6265 | ||
5cb7a798 BP |
6266 | vid_mask = minimask_get_vid_mask(&rule->cr.match.mask); |
6267 | if (vid_mask == VLAN_VID_MASK) { | |
e615b0a3 | 6268 | if (ofproto->vlan_bitmap) { |
5cb7a798 | 6269 | uint16_t vid = miniflow_get_vid(&rule->cr.match.flow); |
e615b0a3 BP |
6270 | if (!bitmap_is_set(ofproto->vlan_bitmap, vid)) { |
6271 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
6272 | ofproto->vlans_changed = true; | |
6273 | } | |
6274 | } else { | |
6275 | ofproto->vlans_changed = true; | |
6276 | } | |
6277 | } | |
6278 | } else { | |
b277c7cc | 6279 | oftable_remove_rule(rule); |
a2143702 | 6280 | ofproto_rule_unref(rule); |
e615b0a3 BP |
6281 | } |
6282 | break; | |
6283 | ||
6284 | case OFOPERATION_DELETE: | |
cb22974d | 6285 | ovs_assert(!op->error); |
a2143702 | 6286 | ofproto_rule_unref(rule); |
e615b0a3 BP |
6287 | op->rule = NULL; |
6288 | break; | |
6289 | ||
6290 | case OFOPERATION_MODIFY: | |
b277c7cc | 6291 | case OFOPERATION_REPLACE: |
e615b0a3 | 6292 | if (!op->error) { |
b277c7cc BP |
6293 | long long int now = time_msec(); |
6294 | ||
b90d6ee5 | 6295 | ovs_mutex_lock(&rule->mutex); |
b277c7cc BP |
6296 | rule->modified = now; |
6297 | if (op->type == OFOPERATION_REPLACE) { | |
dc437090 | 6298 | rule->created = now; |
b277c7cc | 6299 | } |
b90d6ee5 | 6300 | ovs_mutex_unlock(&rule->mutex); |
e615b0a3 | 6301 | } else { |
98eaac36 | 6302 | ofproto_rule_change_cookie(ofproto, rule, op->flow_cookie); |
d10976b7 | 6303 | ovs_mutex_lock(&rule->mutex); |
b277c7cc BP |
6304 | rule->idle_timeout = op->idle_timeout; |
6305 | rule->hard_timeout = op->hard_timeout; | |
d10976b7 | 6306 | ovs_mutex_unlock(&rule->mutex); |
6f00e29b | 6307 | if (op->actions) { |
dc723c44 | 6308 | const struct rule_actions *old_actions; |
884e1dc4 | 6309 | |
c7c9a7c8 | 6310 | ovs_mutex_lock(&rule->mutex); |
06a0f3e2 BP |
6311 | old_actions = rule_get_actions(rule); |
6312 | ovsrcu_set(&rule->actions, op->actions); | |
c7c9a7c8 | 6313 | ovs_mutex_unlock(&rule->mutex); |
884e1dc4 | 6314 | |
6f00e29b | 6315 | op->actions = NULL; |
06a0f3e2 | 6316 | rule_actions_destroy(old_actions); |
08043761 | 6317 | } |
3f517bcd | 6318 | rule->flags = op->flags; |
e615b0a3 BP |
6319 | } |
6320 | break; | |
6321 | ||
6322 | default: | |
428b2edd | 6323 | OVS_NOT_REACHED(); |
e615b0a3 BP |
6324 | } |
6325 | ||
6326 | ofoperation_destroy(op); | |
6327 | } | |
6328 | ||
2b07c8b1 BP |
6329 | ofmonitor_flush(ofproto->connmgr); |
6330 | ||
7ee20df1 | 6331 | if (!list_is_empty(&group->ofproto_node)) { |
cb22974d | 6332 | ovs_assert(ofproto->n_pending > 0); |
e615b0a3 | 6333 | ofproto->n_pending--; |
7ee20df1 BP |
6334 | list_remove(&group->ofproto_node); |
6335 | } | |
6336 | if (!list_is_empty(&group->ofconn_node)) { | |
6337 | list_remove(&group->ofconn_node); | |
e615b0a3 BP |
6338 | if (error) { |
6339 | ofconn_send_error(group->ofconn, group->request, error); | |
7ee20df1 | 6340 | } |
e615b0a3 | 6341 | connmgr_retry(ofproto->connmgr); |
7ee20df1 BP |
6342 | } |
6343 | free(group->request); | |
6344 | free(group); | |
6345 | } | |
6346 | ||
6347 | /* Initiates a new operation on 'rule', of the specified 'type', within | |
a7d94793 BP |
6348 | * 'group'. Prior to calling, 'rule' must not have any pending operation. |
6349 | * | |
2b07c8b1 BP |
6350 | * For a 'type' of OFOPERATION_DELETE, 'reason' should specify the reason that |
6351 | * the flow is being deleted. For other 'type's, 'reason' is ignored (use 0). | |
6352 | * | |
a7d94793 BP |
6353 | * Returns the newly created ofoperation (which is also available as |
6354 | * rule->pending). */ | |
6355 | static struct ofoperation * | |
7ee20df1 | 6356 | ofoperation_create(struct ofopgroup *group, struct rule *rule, |
2b07c8b1 BP |
6357 | enum ofoperation_type type, |
6358 | enum ofp_flow_removed_reason reason) | |
15aaf599 | 6359 | OVS_REQUIRES(ofproto_mutex) |
7ee20df1 | 6360 | { |
a5b8d268 | 6361 | struct ofproto *ofproto = group->ofproto; |
7ee20df1 BP |
6362 | struct ofoperation *op; |
6363 | ||
cb22974d | 6364 | ovs_assert(!rule->pending); |
7ee20df1 BP |
6365 | |
6366 | op = rule->pending = xzalloc(sizeof *op); | |
6367 | op->group = group; | |
6368 | list_push_back(&group->ops, &op->group_node); | |
6369 | op->rule = rule; | |
6370 | op->type = type; | |
2b07c8b1 | 6371 | op->reason = reason; |
7ee20df1 | 6372 | op->flow_cookie = rule->flow_cookie; |
d10976b7 | 6373 | ovs_mutex_lock(&rule->mutex); |
b277c7cc BP |
6374 | op->idle_timeout = rule->idle_timeout; |
6375 | op->hard_timeout = rule->hard_timeout; | |
d10976b7 | 6376 | ovs_mutex_unlock(&rule->mutex); |
3f517bcd | 6377 | op->flags = rule->flags; |
7ee20df1 | 6378 | |
e615b0a3 BP |
6379 | group->n_running++; |
6380 | ||
7ee20df1 | 6381 | if (type == OFOPERATION_DELETE) { |
a5b8d268 | 6382 | hmap_insert(&ofproto->deletions, &op->hmap_node, |
7ee20df1 BP |
6383 | cls_rule_hash(&rule->cr, rule->table_id)); |
6384 | } | |
a7d94793 BP |
6385 | |
6386 | return op; | |
7ee20df1 BP |
6387 | } |
6388 | ||
6389 | static void | |
6390 | ofoperation_destroy(struct ofoperation *op) | |
15aaf599 | 6391 | OVS_REQUIRES(ofproto_mutex) |
7ee20df1 BP |
6392 | { |
6393 | struct ofopgroup *group = op->group; | |
6394 | ||
6395 | if (op->rule) { | |
6396 | op->rule->pending = NULL; | |
6397 | } | |
6398 | if (op->type == OFOPERATION_DELETE) { | |
6399 | hmap_remove(&group->ofproto->deletions, &op->hmap_node); | |
6400 | } | |
6401 | list_remove(&op->group_node); | |
06a0f3e2 | 6402 | rule_actions_destroy(op->actions); |
7ee20df1 | 6403 | free(op); |
7ee20df1 BP |
6404 | } |
6405 | ||
6406 | /* Indicates that 'op' completed with status 'error', which is either 0 to | |
90bf1e07 | 6407 | * indicate success or an OpenFlow error code on failure. |
7ee20df1 | 6408 | * |
a6a62132 | 6409 | * If 'error' is 0, indicating success, the operation will be committed |
b277c7cc | 6410 | * permanently to the flow table. |
a6a62132 BP |
6411 | * |
6412 | * If 'error' is nonzero, then generally the operation will be rolled back: | |
6413 | * | |
6414 | * - If 'op' is an "add flow" operation, ofproto removes the new rule or | |
6415 | * restores the original rule. The caller must have uninitialized any | |
6416 | * derived state in the new rule, as in step 5 of in the "Life Cycle" in | |
6417 | * ofproto/ofproto-provider.h. ofoperation_complete() performs steps 6 and | |
6418 | * and 7 for the new rule, calling its ->rule_dealloc() function. | |
6419 | * | |
6420 | * - If 'op' is a "modify flow" operation, ofproto restores the original | |
6421 | * actions. | |
6422 | * | |
6423 | * - 'op' must not be a "delete flow" operation. Removing a rule is not | |
6424 | * allowed to fail. It must always succeed. | |
7ee20df1 | 6425 | * |
5bee6e26 JP |
6426 | * Please see the large comment in ofproto/ofproto-provider.h titled |
6427 | * "Asynchronous Operation Support" for more information. */ | |
7ee20df1 | 6428 | void |
90bf1e07 | 6429 | ofoperation_complete(struct ofoperation *op, enum ofperr error) |
7ee20df1 BP |
6430 | { |
6431 | struct ofopgroup *group = op->group; | |
7ee20df1 | 6432 | |
cb22974d BP |
6433 | ovs_assert(group->n_running > 0); |
6434 | ovs_assert(!error || op->type != OFOPERATION_DELETE); | |
9075907c | 6435 | |
e615b0a3 BP |
6436 | op->error = error; |
6437 | if (!--group->n_running && !list_is_empty(&group->ofproto_node)) { | |
15aaf599 BP |
6438 | /* This function can be called from ->rule_construct(), in which case |
6439 | * ofproto_mutex is held, or it can be called from ->run(), in which | |
6440 | * case ofproto_mutex is not held. But only in the latter case can we | |
6441 | * arrive here, so we can safely take ofproto_mutex now. */ | |
6442 | ovs_mutex_lock(&ofproto_mutex); | |
6443 | ovs_assert(op->rule->pending == op); | |
e615b0a3 | 6444 | ofopgroup_complete(group); |
15aaf599 | 6445 | ovs_mutex_unlock(&ofproto_mutex); |
7ee20df1 | 6446 | } |
7ee20df1 | 6447 | } |
064af421 | 6448 | \f |
064af421 | 6449 | static uint64_t |
fa60c019 | 6450 | pick_datapath_id(const struct ofproto *ofproto) |
064af421 | 6451 | { |
fa60c019 | 6452 | const struct ofport *port; |
064af421 | 6453 | |
abe529af | 6454 | port = ofproto_get_port(ofproto, OFPP_LOCAL); |
fa60c019 BP |
6455 | if (port) { |
6456 | uint8_t ea[ETH_ADDR_LEN]; | |
6457 | int error; | |
6458 | ||
6459 | error = netdev_get_etheraddr(port->netdev, ea); | |
064af421 BP |
6460 | if (!error) { |
6461 | return eth_addr_to_uint64(ea); | |
6462 | } | |
fbfa2911 BP |
6463 | VLOG_WARN("%s: could not get MAC address for %s (%s)", |
6464 | ofproto->name, netdev_get_name(port->netdev), | |
10a89ef0 | 6465 | ovs_strerror(error)); |
064af421 | 6466 | } |
fa60c019 | 6467 | return ofproto->fallback_dpid; |
064af421 BP |
6468 | } |
6469 | ||
6470 | static uint64_t | |
6471 | pick_fallback_dpid(void) | |
6472 | { | |
6473 | uint8_t ea[ETH_ADDR_LEN]; | |
70150daf | 6474 | eth_addr_nicira_random(ea); |
064af421 BP |
6475 | return eth_addr_to_uint64(ea); |
6476 | } | |
6477 | \f | |
254750ce BP |
6478 | /* Table overflow policy. */ |
6479 | ||
ad3efdcb EJ |
6480 | /* Chooses and updates 'rulep' with a rule to evict from 'table'. Sets 'rulep' |
6481 | * to NULL if the table is not configured to evict rules or if the table | |
6482 | * contains no evictable rules. (Rules with a readlock on their evict rwlock, | |
6483 | * or with no timeouts are not evictable.) */ | |
6484 | static bool | |
6485 | choose_rule_to_evict(struct oftable *table, struct rule **rulep) | |
15aaf599 | 6486 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6487 | { |
6488 | struct eviction_group *evg; | |
6489 | ||
ad3efdcb | 6490 | *rulep = NULL; |
254750ce | 6491 | if (!table->eviction_fields) { |
ad3efdcb | 6492 | return false; |
254750ce BP |
6493 | } |
6494 | ||
6495 | /* In the common case, the outer and inner loops here will each be entered | |
6496 | * exactly once: | |
6497 | * | |
6498 | * - The inner loop normally "return"s in its first iteration. If the | |
6499 | * eviction group has any evictable rules, then it always returns in | |
6500 | * some iteration. | |
6501 | * | |
6502 | * - The outer loop only iterates more than once if the largest eviction | |
6503 | * group has no evictable rules. | |
6504 | * | |
6505 | * - The outer loop can exit only if table's 'max_flows' is all filled up | |
afe2143d | 6506 | * by unevictable rules. */ |
254750ce BP |
6507 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { |
6508 | struct rule *rule; | |
6509 | ||
6510 | HEAP_FOR_EACH (rule, evg_node, &evg->rules) { | |
15aaf599 BP |
6511 | *rulep = rule; |
6512 | return true; | |
254750ce BP |
6513 | } |
6514 | } | |
6515 | ||
ad3efdcb | 6516 | return false; |
254750ce BP |
6517 | } |
6518 | ||
6519 | /* Searches 'ofproto' for tables that have more flows than their configured | |
6520 | * maximum and that have flow eviction enabled, and evicts as many flows as | |
6521 | * necessary and currently feasible from them. | |
6522 | * | |
6523 | * This triggers only when an OpenFlow table has N flows in it and then the | |
6524 | * client configures a maximum number of flows less than N. */ | |
6525 | static void | |
6526 | ofproto_evict(struct ofproto *ofproto) | |
6527 | { | |
254750ce BP |
6528 | struct oftable *table; |
6529 | ||
15aaf599 | 6530 | ovs_mutex_lock(&ofproto_mutex); |
254750ce | 6531 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
2e31a9b8 | 6532 | evict_rules_from_table(ofproto, table, 0); |
254750ce | 6533 | } |
15aaf599 | 6534 | ovs_mutex_unlock(&ofproto_mutex); |
254750ce BP |
6535 | } |
6536 | \f | |
6537 | /* Eviction groups. */ | |
6538 | ||
6539 | /* Returns the priority to use for an eviction_group that contains 'n_rules' | |
6540 | * rules. The priority contains low-order random bits to ensure that eviction | |
6541 | * groups with the same number of rules are prioritized randomly. */ | |
6542 | static uint32_t | |
6543 | eviction_group_priority(size_t n_rules) | |
6544 | { | |
6545 | uint16_t size = MIN(UINT16_MAX, n_rules); | |
6546 | return (size << 16) | random_uint16(); | |
6547 | } | |
6548 | ||
6549 | /* Updates 'evg', an eviction_group within 'table', following a change that | |
6550 | * adds or removes rules in 'evg'. */ | |
6551 | static void | |
6552 | eviction_group_resized(struct oftable *table, struct eviction_group *evg) | |
15aaf599 | 6553 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6554 | { |
6555 | heap_change(&table->eviction_groups_by_size, &evg->size_node, | |
6556 | eviction_group_priority(heap_count(&evg->rules))); | |
6557 | } | |
6558 | ||
6559 | /* Destroys 'evg', an eviction_group within 'table': | |
6560 | * | |
6561 | * - Removes all the rules, if any, from 'evg'. (It doesn't destroy the | |
6562 | * rules themselves, just removes them from the eviction group.) | |
6563 | * | |
6564 | * - Removes 'evg' from 'table'. | |
6565 | * | |
6566 | * - Frees 'evg'. */ | |
6567 | static void | |
6568 | eviction_group_destroy(struct oftable *table, struct eviction_group *evg) | |
15aaf599 | 6569 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6570 | { |
6571 | while (!heap_is_empty(&evg->rules)) { | |
6572 | struct rule *rule; | |
6573 | ||
6574 | rule = CONTAINER_OF(heap_pop(&evg->rules), struct rule, evg_node); | |
6575 | rule->eviction_group = NULL; | |
6576 | } | |
6577 | hmap_remove(&table->eviction_groups_by_id, &evg->id_node); | |
6578 | heap_remove(&table->eviction_groups_by_size, &evg->size_node); | |
6579 | heap_destroy(&evg->rules); | |
6580 | free(evg); | |
6581 | } | |
6582 | ||
6583 | /* Removes 'rule' from its eviction group, if any. */ | |
6584 | static void | |
6585 | eviction_group_remove_rule(struct rule *rule) | |
15aaf599 | 6586 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6587 | { |
6588 | if (rule->eviction_group) { | |
6589 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
6590 | struct eviction_group *evg = rule->eviction_group; | |
6591 | ||
6592 | rule->eviction_group = NULL; | |
6593 | heap_remove(&evg->rules, &rule->evg_node); | |
6594 | if (heap_is_empty(&evg->rules)) { | |
6595 | eviction_group_destroy(table, evg); | |
6596 | } else { | |
6597 | eviction_group_resized(table, evg); | |
6598 | } | |
6599 | } | |
6600 | } | |
6601 | ||
6602 | /* Hashes the 'rule''s values for the eviction_fields of 'rule''s table, and | |
6603 | * returns the hash value. */ | |
6604 | static uint32_t | |
6605 | eviction_group_hash_rule(struct rule *rule) | |
15aaf599 | 6606 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6607 | { |
6608 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
6609 | const struct mf_subfield *sf; | |
5cb7a798 | 6610 | struct flow flow; |
254750ce BP |
6611 | uint32_t hash; |
6612 | ||
6613 | hash = table->eviction_group_id_basis; | |
5cb7a798 | 6614 | miniflow_expand(&rule->cr.match.flow, &flow); |
254750ce BP |
6615 | for (sf = table->eviction_fields; |
6616 | sf < &table->eviction_fields[table->n_eviction_fields]; | |
6617 | sf++) | |
6618 | { | |
5cb7a798 | 6619 | if (mf_are_prereqs_ok(sf->field, &flow)) { |
254750ce BP |
6620 | union mf_value value; |
6621 | ||
5cb7a798 | 6622 | mf_get_value(sf->field, &flow, &value); |
254750ce BP |
6623 | if (sf->ofs) { |
6624 | bitwise_zero(&value, sf->field->n_bytes, 0, sf->ofs); | |
6625 | } | |
6626 | if (sf->ofs + sf->n_bits < sf->field->n_bytes * 8) { | |
6627 | unsigned int start = sf->ofs + sf->n_bits; | |
6628 | bitwise_zero(&value, sf->field->n_bytes, start, | |
6629 | sf->field->n_bytes * 8 - start); | |
6630 | } | |
6631 | hash = hash_bytes(&value, sf->field->n_bytes, hash); | |
6632 | } else { | |
6633 | hash = hash_int(hash, 0); | |
6634 | } | |
6635 | } | |
6636 | ||
6637 | return hash; | |
6638 | } | |
6639 | ||
6640 | /* Returns an eviction group within 'table' with the given 'id', creating one | |
6641 | * if necessary. */ | |
6642 | static struct eviction_group * | |
6643 | eviction_group_find(struct oftable *table, uint32_t id) | |
15aaf599 | 6644 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6645 | { |
6646 | struct eviction_group *evg; | |
6647 | ||
6648 | HMAP_FOR_EACH_WITH_HASH (evg, id_node, id, &table->eviction_groups_by_id) { | |
6649 | return evg; | |
6650 | } | |
6651 | ||
6652 | evg = xmalloc(sizeof *evg); | |
6653 | hmap_insert(&table->eviction_groups_by_id, &evg->id_node, id); | |
6654 | heap_insert(&table->eviction_groups_by_size, &evg->size_node, | |
6655 | eviction_group_priority(0)); | |
6656 | heap_init(&evg->rules); | |
6657 | ||
6658 | return evg; | |
6659 | } | |
6660 | ||
6661 | /* Returns an eviction priority for 'rule'. The return value should be | |
6662 | * interpreted so that higher priorities make a rule more attractive candidates | |
dc437090 JR |
6663 | * for eviction. |
6664 | * Called only if have a timeout. */ | |
254750ce | 6665 | static uint32_t |
dc437090 | 6666 | rule_eviction_priority(struct ofproto *ofproto, struct rule *rule) |
15aaf599 | 6667 | OVS_REQUIRES(ofproto_mutex) |
254750ce | 6668 | { |
dc437090 JR |
6669 | long long int expiration = LLONG_MAX; |
6670 | long long int modified; | |
254750ce BP |
6671 | uint32_t expiration_offset; |
6672 | ||
dc437090 | 6673 | /* 'modified' needs protection even when we hold 'ofproto_mutex'. */ |
d10976b7 | 6674 | ovs_mutex_lock(&rule->mutex); |
dc437090 | 6675 | modified = rule->modified; |
d10976b7 | 6676 | ovs_mutex_unlock(&rule->mutex); |
dc437090 JR |
6677 | |
6678 | if (rule->hard_timeout) { | |
6679 | expiration = modified + rule->hard_timeout * 1000; | |
6680 | } | |
6681 | if (rule->idle_timeout) { | |
6682 | uint64_t packets, bytes; | |
6683 | long long int used; | |
6684 | long long int idle_expiration; | |
6685 | ||
6686 | ofproto->ofproto_class->rule_get_stats(rule, &packets, &bytes, &used); | |
6687 | idle_expiration = used + rule->idle_timeout * 1000; | |
6688 | expiration = MIN(expiration, idle_expiration); | |
6689 | } | |
6690 | ||
254750ce BP |
6691 | if (expiration == LLONG_MAX) { |
6692 | return 0; | |
6693 | } | |
6694 | ||
6695 | /* Calculate the time of expiration as a number of (approximate) seconds | |
6696 | * after program startup. | |
6697 | * | |
6698 | * This should work OK for program runs that last UINT32_MAX seconds or | |
6699 | * less. Therefore, please restart OVS at least once every 136 years. */ | |
6700 | expiration_offset = (expiration >> 10) - (time_boot_msec() >> 10); | |
6701 | ||
6702 | /* Invert the expiration offset because we're using a max-heap. */ | |
6703 | return UINT32_MAX - expiration_offset; | |
6704 | } | |
6705 | ||
6706 | /* Adds 'rule' to an appropriate eviction group for its oftable's | |
6707 | * configuration. Does nothing if 'rule''s oftable doesn't have eviction | |
6708 | * enabled, or if 'rule' is a permanent rule (one that will never expire on its | |
6709 | * own). | |
6710 | * | |
6711 | * The caller must ensure that 'rule' is not already in an eviction group. */ | |
6712 | static void | |
6713 | eviction_group_add_rule(struct rule *rule) | |
15aaf599 | 6714 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6715 | { |
6716 | struct ofproto *ofproto = rule->ofproto; | |
6717 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
a3779dbc | 6718 | bool has_timeout; |
254750ce | 6719 | |
dc437090 JR |
6720 | /* Timeouts may be modified only when holding 'ofproto_mutex'. We have it |
6721 | * so no additional protection is needed. */ | |
a3779dbc | 6722 | has_timeout = rule->hard_timeout || rule->idle_timeout; |
a3779dbc EJ |
6723 | |
6724 | if (table->eviction_fields && has_timeout) { | |
254750ce BP |
6725 | struct eviction_group *evg; |
6726 | ||
6727 | evg = eviction_group_find(table, eviction_group_hash_rule(rule)); | |
6728 | ||
6729 | rule->eviction_group = evg; | |
6730 | heap_insert(&evg->rules, &rule->evg_node, | |
dc437090 | 6731 | rule_eviction_priority(ofproto, rule)); |
254750ce BP |
6732 | eviction_group_resized(table, evg); |
6733 | } | |
6734 | } | |
6735 | \f | |
d0918789 BP |
6736 | /* oftables. */ |
6737 | ||
6738 | /* Initializes 'table'. */ | |
6739 | static void | |
6740 | oftable_init(struct oftable *table) | |
6741 | { | |
5c67e4af | 6742 | memset(table, 0, sizeof *table); |
476f36e8 | 6743 | classifier_init(&table->cls, flow_segment_u32s); |
ec1c5c7e | 6744 | table->max_flows = UINT_MAX; |
6b83a3c5 | 6745 | atomic_init(&table->config, (unsigned int)OFPROTO_TABLE_MISS_DEFAULT); |
f017d986 JR |
6746 | |
6747 | fat_rwlock_wrlock(&table->cls.rwlock); | |
6748 | classifier_set_prefix_fields(&table->cls, default_prefix_fields, | |
6749 | ARRAY_SIZE(default_prefix_fields)); | |
6750 | fat_rwlock_unlock(&table->cls.rwlock); | |
d611866c SH |
6751 | |
6752 | atomic_init(&table->n_matched, 0); | |
6753 | atomic_init(&table->n_missed, 0); | |
d0918789 BP |
6754 | } |
6755 | ||
254750ce | 6756 | /* Destroys 'table', including its classifier and eviction groups. |
d0918789 BP |
6757 | * |
6758 | * The caller is responsible for freeing 'table' itself. */ | |
6759 | static void | |
6760 | oftable_destroy(struct oftable *table) | |
6761 | { | |
06f81620 | 6762 | fat_rwlock_rdlock(&table->cls.rwlock); |
cb22974d | 6763 | ovs_assert(classifier_is_empty(&table->cls)); |
06f81620 | 6764 | fat_rwlock_unlock(&table->cls.rwlock); |
254750ce | 6765 | oftable_disable_eviction(table); |
d0918789 | 6766 | classifier_destroy(&table->cls); |
254750ce BP |
6767 | free(table->name); |
6768 | } | |
6769 | ||
6770 | /* Changes the name of 'table' to 'name'. If 'name' is NULL or the empty | |
6771 | * string, then 'table' will use its default name. | |
6772 | * | |
6773 | * This only affects the name exposed for a table exposed through the OpenFlow | |
6774 | * OFPST_TABLE (as printed by "ovs-ofctl dump-tables"). */ | |
6775 | static void | |
6776 | oftable_set_name(struct oftable *table, const char *name) | |
6777 | { | |
6778 | if (name && name[0]) { | |
6779 | int len = strnlen(name, OFP_MAX_TABLE_NAME_LEN); | |
6780 | if (!table->name || strncmp(name, table->name, len)) { | |
6781 | free(table->name); | |
6782 | table->name = xmemdup0(name, len); | |
6783 | } | |
6784 | } else { | |
6785 | free(table->name); | |
6786 | table->name = NULL; | |
6787 | } | |
6788 | } | |
6789 | ||
6790 | /* oftables support a choice of two policies when adding a rule would cause the | |
6791 | * number of flows in the table to exceed the configured maximum number: either | |
6792 | * they can refuse to add the new flow or they can evict some existing flow. | |
6793 | * This function configures the former policy on 'table'. */ | |
6794 | static void | |
6795 | oftable_disable_eviction(struct oftable *table) | |
15aaf599 | 6796 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6797 | { |
6798 | if (table->eviction_fields) { | |
6799 | struct eviction_group *evg, *next; | |
6800 | ||
6801 | HMAP_FOR_EACH_SAFE (evg, next, id_node, | |
6802 | &table->eviction_groups_by_id) { | |
6803 | eviction_group_destroy(table, evg); | |
6804 | } | |
6805 | hmap_destroy(&table->eviction_groups_by_id); | |
6806 | heap_destroy(&table->eviction_groups_by_size); | |
6807 | ||
6808 | free(table->eviction_fields); | |
6809 | table->eviction_fields = NULL; | |
6810 | table->n_eviction_fields = 0; | |
6811 | } | |
6812 | } | |
6813 | ||
6814 | /* oftables support a choice of two policies when adding a rule would cause the | |
6815 | * number of flows in the table to exceed the configured maximum number: either | |
6816 | * they can refuse to add the new flow or they can evict some existing flow. | |
6817 | * This function configures the latter policy on 'table', with fairness based | |
6818 | * on the values of the 'n_fields' fields specified in 'fields'. (Specifying | |
6819 | * 'n_fields' as 0 disables fairness.) */ | |
6820 | static void | |
6821 | oftable_enable_eviction(struct oftable *table, | |
6822 | const struct mf_subfield *fields, size_t n_fields) | |
15aaf599 | 6823 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6824 | { |
6825 | struct cls_cursor cursor; | |
6826 | struct rule *rule; | |
6827 | ||
6828 | if (table->eviction_fields | |
6829 | && n_fields == table->n_eviction_fields | |
6830 | && (!n_fields | |
6831 | || !memcmp(fields, table->eviction_fields, | |
6832 | n_fields * sizeof *fields))) { | |
6833 | /* No change. */ | |
6834 | return; | |
6835 | } | |
6836 | ||
6837 | oftable_disable_eviction(table); | |
6838 | ||
6839 | table->n_eviction_fields = n_fields; | |
6840 | table->eviction_fields = xmemdup(fields, n_fields * sizeof *fields); | |
6841 | ||
6842 | table->eviction_group_id_basis = random_uint32(); | |
6843 | hmap_init(&table->eviction_groups_by_id); | |
6844 | heap_init(&table->eviction_groups_by_size); | |
6845 | ||
06f81620 | 6846 | fat_rwlock_rdlock(&table->cls.rwlock); |
254750ce BP |
6847 | cls_cursor_init(&cursor, &table->cls, NULL); |
6848 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { | |
6849 | eviction_group_add_rule(rule); | |
6850 | } | |
06f81620 | 6851 | fat_rwlock_unlock(&table->cls.rwlock); |
d0918789 BP |
6852 | } |
6853 | ||
6854 | /* Removes 'rule' from the oftable that contains it. */ | |
6855 | static void | |
8b81d1ef | 6856 | oftable_remove_rule__(struct ofproto *ofproto, struct rule *rule) |
15aaf599 | 6857 | OVS_REQUIRES(ofproto_mutex) |
d0918789 | 6858 | { |
8b81d1ef BP |
6859 | struct classifier *cls = &ofproto->tables[rule->table_id].cls; |
6860 | ||
06f81620 | 6861 | fat_rwlock_wrlock(&cls->rwlock); |
49a0e0eb | 6862 | classifier_remove(cls, CONST_CAST(struct cls_rule *, &rule->cr)); |
06f81620 | 6863 | fat_rwlock_unlock(&cls->rwlock); |
2c916028 | 6864 | |
98eaac36 | 6865 | cookies_remove(ofproto, rule); |
2c916028 | 6866 | |
254750ce | 6867 | eviction_group_remove_rule(rule); |
e503cc19 SH |
6868 | if (!list_is_empty(&rule->expirable)) { |
6869 | list_remove(&rule->expirable); | |
6870 | } | |
9cae45dc JR |
6871 | if (!list_is_empty(&rule->meter_list_node)) { |
6872 | list_remove(&rule->meter_list_node); | |
51b50dfd | 6873 | list_init(&rule->meter_list_node); |
9cae45dc | 6874 | } |
d0918789 BP |
6875 | } |
6876 | ||
0b4f2078 EJ |
6877 | static void |
6878 | oftable_remove_rule(struct rule *rule) | |
15aaf599 | 6879 | OVS_REQUIRES(ofproto_mutex) |
0b4f2078 | 6880 | { |
8b81d1ef | 6881 | oftable_remove_rule__(rule->ofproto, rule); |
0b4f2078 EJ |
6882 | } |
6883 | ||
b277c7cc BP |
6884 | /* Inserts 'rule' into its oftable, which must not already contain any rule for |
6885 | * the same cls_rule. */ | |
6886 | static void | |
6887 | oftable_insert_rule(struct rule *rule) | |
15aaf599 | 6888 | OVS_REQUIRES(ofproto_mutex) |
d0918789 BP |
6889 | { |
6890 | struct ofproto *ofproto = rule->ofproto; | |
6891 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
dc723c44 | 6892 | const struct rule_actions *actions; |
a3779dbc EJ |
6893 | bool may_expire; |
6894 | ||
d10976b7 | 6895 | ovs_mutex_lock(&rule->mutex); |
a3779dbc | 6896 | may_expire = rule->hard_timeout || rule->idle_timeout; |
d10976b7 | 6897 | ovs_mutex_unlock(&rule->mutex); |
e503cc19 SH |
6898 | |
6899 | if (may_expire) { | |
6900 | list_insert(&ofproto->expirable, &rule->expirable); | |
6901 | } | |
2c916028 | 6902 | |
98eaac36 | 6903 | cookies_insert(ofproto, rule); |
6f00e29b | 6904 | |
06a0f3e2 BP |
6905 | actions = rule_get_actions(rule); |
6906 | if (actions->provider_meter_id != UINT32_MAX) { | |
6907 | uint32_t meter_id = ofpacts_get_meter(actions->ofpacts, | |
6908 | actions->ofpacts_len); | |
65efd2ab | 6909 | struct meter *meter = ofproto->meters[meter_id]; |
9cae45dc JR |
6910 | list_insert(&meter->rules, &rule->meter_list_node); |
6911 | } | |
06f81620 | 6912 | fat_rwlock_wrlock(&table->cls.rwlock); |
49a0e0eb | 6913 | classifier_insert(&table->cls, CONST_CAST(struct cls_rule *, &rule->cr)); |
06f81620 | 6914 | fat_rwlock_unlock(&table->cls.rwlock); |
254750ce | 6915 | eviction_group_add_rule(rule); |
d0918789 BP |
6916 | } |
6917 | \f | |
abe529af | 6918 | /* unixctl commands. */ |
7aa697dd | 6919 | |
abe529af | 6920 | struct ofproto * |
2ac6bedd | 6921 | ofproto_lookup(const char *name) |
7aa697dd | 6922 | { |
2ac6bedd | 6923 | struct ofproto *ofproto; |
7aa697dd | 6924 | |
2ac6bedd BP |
6925 | HMAP_FOR_EACH_WITH_HASH (ofproto, hmap_node, hash_string(name, 0), |
6926 | &all_ofprotos) { | |
6927 | if (!strcmp(ofproto->name, name)) { | |
6928 | return ofproto; | |
6929 | } | |
7aa697dd | 6930 | } |
2ac6bedd | 6931 | return NULL; |
7aa697dd BP |
6932 | } |
6933 | ||
6934 | static void | |
0e15264f BP |
6935 | ofproto_unixctl_list(struct unixctl_conn *conn, int argc OVS_UNUSED, |
6936 | const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED) | |
7aa697dd | 6937 | { |
7aa697dd | 6938 | struct ofproto *ofproto; |
7aa697dd | 6939 | struct ds results; |
7aa697dd | 6940 | |
7aa697dd | 6941 | ds_init(&results); |
2ac6bedd BP |
6942 | HMAP_FOR_EACH (ofproto, hmap_node, &all_ofprotos) { |
6943 | ds_put_format(&results, "%s\n", ofproto->name); | |
7aa697dd | 6944 | } |
bde9f75d | 6945 | unixctl_command_reply(conn, ds_cstr(&results)); |
7aa697dd | 6946 | ds_destroy(&results); |
7aa697dd BP |
6947 | } |
6948 | ||
6949 | static void | |
6950 | ofproto_unixctl_init(void) | |
6951 | { | |
6952 | static bool registered; | |
6953 | if (registered) { | |
6954 | return; | |
6955 | } | |
6956 | registered = true; | |
6957 | ||
0e15264f BP |
6958 | unixctl_command_register("ofproto/list", "", 0, 0, |
6959 | ofproto_unixctl_list, NULL); | |
064af421 | 6960 | } |
52a90c29 BP |
6961 | \f |
6962 | /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.) | |
6963 | * | |
6964 | * This is deprecated. It is only for compatibility with broken device drivers | |
6965 | * in old versions of Linux that do not properly support VLANs when VLAN | |
6966 | * devices are not used. When broken device drivers are no longer in | |
6967 | * widespread use, we will delete these interfaces. */ | |
6968 | ||
6969 | /* Sets a 1-bit in the 4096-bit 'vlan_bitmap' for each VLAN ID that is matched | |
6970 | * (exactly) by an OpenFlow rule in 'ofproto'. */ | |
6971 | void | |
6972 | ofproto_get_vlan_usage(struct ofproto *ofproto, unsigned long int *vlan_bitmap) | |
6973 | { | |
ac4aa4c8 JR |
6974 | struct match match; |
6975 | struct cls_rule target; | |
d0918789 | 6976 | const struct oftable *oftable; |
52a90c29 | 6977 | |
ac4aa4c8 JR |
6978 | match_init_catchall(&match); |
6979 | match_set_vlan_vid_masked(&match, htons(VLAN_CFI), htons(VLAN_CFI)); | |
6980 | cls_rule_init(&target, &match, 0); | |
6981 | ||
52a90c29 BP |
6982 | free(ofproto->vlan_bitmap); |
6983 | ofproto->vlan_bitmap = bitmap_allocate(4096); | |
6984 | ofproto->vlans_changed = false; | |
6985 | ||
d0918789 | 6986 | OFPROTO_FOR_EACH_TABLE (oftable, ofproto) { |
ac4aa4c8 JR |
6987 | struct cls_cursor cursor; |
6988 | struct rule *rule; | |
52a90c29 | 6989 | |
06f81620 | 6990 | fat_rwlock_rdlock(&oftable->cls.rwlock); |
ac4aa4c8 JR |
6991 | cls_cursor_init(&cursor, &oftable->cls, &target); |
6992 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { | |
6993 | if (minimask_get_vid_mask(&rule->cr.match.mask) == VLAN_VID_MASK) { | |
6994 | uint16_t vid = miniflow_get_vid(&rule->cr.match.flow); | |
6995 | ||
6996 | bitmap_set1(vlan_bitmap, vid); | |
6997 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
52a90c29 BP |
6998 | } |
6999 | } | |
06f81620 | 7000 | fat_rwlock_unlock(&oftable->cls.rwlock); |
52a90c29 BP |
7001 | } |
7002 | } | |
7003 | ||
7004 | /* Returns true if new VLANs have come into use by the flow table since the | |
7005 | * last call to ofproto_get_vlan_usage(). | |
7006 | * | |
7007 | * We don't track when old VLANs stop being used. */ | |
7008 | bool | |
7009 | ofproto_has_vlan_usage_changed(const struct ofproto *ofproto) | |
7010 | { | |
7011 | return ofproto->vlans_changed; | |
7012 | } | |
7013 | ||
7014 | /* Configures a VLAN splinter binding between the ports identified by OpenFlow | |
7015 | * port numbers 'vlandev_ofp_port' and 'realdev_ofp_port'. If | |
7016 | * 'realdev_ofp_port' is nonzero, then the VLAN device is enslaved to the real | |
7017 | * device as a VLAN splinter for VLAN ID 'vid'. If 'realdev_ofp_port' is zero, | |
7018 | * then the VLAN device is un-enslaved. */ | |
7019 | int | |
4e022ec0 AW |
7020 | ofproto_port_set_realdev(struct ofproto *ofproto, ofp_port_t vlandev_ofp_port, |
7021 | ofp_port_t realdev_ofp_port, int vid) | |
52a90c29 BP |
7022 | { |
7023 | struct ofport *ofport; | |
7024 | int error; | |
7025 | ||
cb22974d | 7026 | ovs_assert(vlandev_ofp_port != realdev_ofp_port); |
52a90c29 BP |
7027 | |
7028 | ofport = ofproto_get_port(ofproto, vlandev_ofp_port); | |
7029 | if (!ofport) { | |
7030 | VLOG_WARN("%s: cannot set realdev on nonexistent port %"PRIu16, | |
7031 | ofproto->name, vlandev_ofp_port); | |
7032 | return EINVAL; | |
7033 | } | |
7034 | ||
7035 | if (!ofproto->ofproto_class->set_realdev) { | |
7036 | if (!vlandev_ofp_port) { | |
7037 | return 0; | |
7038 | } | |
7039 | VLOG_WARN("%s: vlan splinters not supported", ofproto->name); | |
7040 | return EOPNOTSUPP; | |
7041 | } | |
7042 | ||
7043 | error = ofproto->ofproto_class->set_realdev(ofport, realdev_ofp_port, vid); | |
7044 | if (error) { | |
7045 | VLOG_WARN("%s: setting realdev on port %"PRIu16" (%s) failed (%s)", | |
7046 | ofproto->name, vlandev_ofp_port, | |
10a89ef0 | 7047 | netdev_get_name(ofport->netdev), ovs_strerror(error)); |
52a90c29 BP |
7048 | } |
7049 | return error; | |
7050 | } |