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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" | |
064af421 BP |
46 | #include "packets.h" |
47 | #include "pinsched.h" | |
48 | #include "pktbuf.h" | |
49 | #include "poll-loop.h" | |
254750ce | 50 | #include "random.h" |
da4a6191 | 51 | #include "seq.h" |
064af421 | 52 | #include "shash.h" |
0d085684 | 53 | #include "simap.h" |
e8f9a7bb | 54 | #include "smap.h" |
b3c01ed3 | 55 | #include "sset.h" |
064af421 | 56 | #include "timeval.h" |
c4617b3c | 57 | #include "unaligned.h" |
4f2cad2c | 58 | #include "unixctl.h" |
5136ce49 | 59 | #include "vlog.h" |
064af421 | 60 | |
d98e6007 | 61 | VLOG_DEFINE_THIS_MODULE(ofproto); |
064af421 | 62 | |
d76f09ea | 63 | COVERAGE_DEFINE(ofproto_flush); |
d76f09ea BP |
64 | COVERAGE_DEFINE(ofproto_packet_out); |
65 | COVERAGE_DEFINE(ofproto_queue_req); | |
66 | COVERAGE_DEFINE(ofproto_recv_openflow); | |
67 | COVERAGE_DEFINE(ofproto_reinit_ports); | |
d76f09ea BP |
68 | COVERAGE_DEFINE(ofproto_update_port); |
69 | ||
7ee20df1 BP |
70 | enum ofproto_state { |
71 | S_OPENFLOW, /* Processing OpenFlow commands. */ | |
254750ce | 72 | S_EVICT, /* Evicting flows from over-limit tables. */ |
7ee20df1 BP |
73 | S_FLUSH, /* Deleting all flow table rules. */ |
74 | }; | |
75 | ||
76 | enum ofoperation_type { | |
77 | OFOPERATION_ADD, | |
78 | OFOPERATION_DELETE, | |
b277c7cc BP |
79 | OFOPERATION_MODIFY, |
80 | OFOPERATION_REPLACE | |
7ee20df1 BP |
81 | }; |
82 | ||
83 | /* A single OpenFlow request can execute any number of operations. The | |
84 | * ofopgroup maintain OpenFlow state common to all of the operations, e.g. the | |
85 | * ofconn to which an error reply should be sent if necessary. | |
86 | * | |
87 | * ofproto initiates some operations internally. These operations are still | |
88 | * assigned to groups but will not have an associated ofconn. */ | |
89 | struct ofopgroup { | |
90 | struct ofproto *ofproto; /* Owning ofproto. */ | |
91 | struct list ofproto_node; /* In ofproto's "pending" list. */ | |
92 | struct list ops; /* List of "struct ofoperation"s. */ | |
e615b0a3 | 93 | int n_running; /* Number of ops still pending. */ |
7ee20df1 BP |
94 | |
95 | /* Data needed to send OpenFlow reply on failure or to send a buffered | |
96 | * packet on success. | |
97 | * | |
98 | * If list_is_empty(ofconn_node) then this ofopgroup never had an | |
99 | * associated ofconn or its ofconn's connection dropped after it initiated | |
100 | * the operation. In the latter case 'ofconn' is a wild pointer that | |
101 | * refers to freed memory, so the 'ofconn' member must be used only if | |
102 | * !list_is_empty(ofconn_node). | |
103 | */ | |
104 | struct list ofconn_node; /* In ofconn's list of pending opgroups. */ | |
105 | struct ofconn *ofconn; /* ofconn for reply (but see note above). */ | |
106 | struct ofp_header *request; /* Original request (truncated at 64 bytes). */ | |
107 | uint32_t buffer_id; /* Buffer id from original request. */ | |
7ee20df1 BP |
108 | }; |
109 | ||
7024dffe BP |
110 | static struct ofopgroup *ofopgroup_create_unattached(struct ofproto *); |
111 | static struct ofopgroup *ofopgroup_create(struct ofproto *, struct ofconn *, | |
112 | const struct ofp_header *, | |
113 | uint32_t buffer_id); | |
7ee20df1 | 114 | static void ofopgroup_submit(struct ofopgroup *); |
e615b0a3 | 115 | static void ofopgroup_complete(struct ofopgroup *); |
7ee20df1 BP |
116 | |
117 | /* A single flow table operation. */ | |
118 | struct ofoperation { | |
119 | struct ofopgroup *group; /* Owning group. */ | |
120 | struct list group_node; /* In ofopgroup's "ops" list. */ | |
121 | struct hmap_node hmap_node; /* In ofproto's "deletions" hmap. */ | |
122 | struct rule *rule; /* Rule being operated upon. */ | |
123 | enum ofoperation_type type; /* Type of operation. */ | |
08043761 | 124 | |
b277c7cc BP |
125 | /* OFOPERATION_MODIFY, OFOPERATION_REPLACE: The old actions, if the actions |
126 | * are changing. */ | |
6f00e29b | 127 | struct rule_actions *actions; |
08043761 | 128 | |
2b07c8b1 BP |
129 | /* OFOPERATION_DELETE. */ |
130 | enum ofp_flow_removed_reason reason; /* Reason flow was removed. */ | |
131 | ||
3f517bcd DB |
132 | ovs_be64 flow_cookie; /* Rule's old flow cookie. */ |
133 | uint16_t idle_timeout; /* Rule's old idle timeout. */ | |
134 | uint16_t hard_timeout; /* Rule's old hard timeout. */ | |
135 | enum ofputil_flow_mod_flags flags; /* Rule's old flags. */ | |
136 | enum ofperr error; /* 0 if no error. */ | |
7ee20df1 BP |
137 | }; |
138 | ||
a7d94793 BP |
139 | static struct ofoperation *ofoperation_create(struct ofopgroup *, |
140 | struct rule *, | |
2b07c8b1 BP |
141 | enum ofoperation_type, |
142 | enum ofp_flow_removed_reason); | |
7ee20df1 BP |
143 | static void ofoperation_destroy(struct ofoperation *); |
144 | ||
d0918789 BP |
145 | /* oftable. */ |
146 | static void oftable_init(struct oftable *); | |
147 | static void oftable_destroy(struct oftable *); | |
878ae780 | 148 | |
254750ce BP |
149 | static void oftable_set_name(struct oftable *, const char *name); |
150 | ||
151 | static void oftable_disable_eviction(struct oftable *); | |
152 | static void oftable_enable_eviction(struct oftable *, | |
153 | const struct mf_subfield *fields, | |
154 | size_t n_fields); | |
155 | ||
15aaf599 | 156 | static void oftable_remove_rule(struct rule *rule) OVS_REQUIRES(ofproto_mutex); |
8b81d1ef | 157 | static void oftable_remove_rule__(struct ofproto *, struct rule *) |
15aaf599 | 158 | OVS_REQUIRES(ofproto_mutex); |
b277c7cc | 159 | static void oftable_insert_rule(struct rule *); |
064af421 | 160 | |
254750ce BP |
161 | /* A set of rules within a single OpenFlow table (oftable) that have the same |
162 | * values for the oftable's eviction_fields. A rule to be evicted, when one is | |
163 | * needed, is taken from the eviction group that contains the greatest number | |
164 | * of rules. | |
165 | * | |
166 | * An oftable owns any number of eviction groups, each of which contains any | |
167 | * number of rules. | |
168 | * | |
169 | * Membership in an eviction group is imprecise, based on the hash of the | |
170 | * oftable's eviction_fields (in the eviction_group's id_node.hash member). | |
171 | * That is, if two rules have different eviction_fields, but those | |
172 | * eviction_fields hash to the same value, then they will belong to the same | |
173 | * eviction_group anyway. | |
174 | * | |
175 | * (When eviction is not enabled on an oftable, we don't track any eviction | |
176 | * groups, to save time and space.) */ | |
177 | struct eviction_group { | |
178 | struct hmap_node id_node; /* In oftable's "eviction_groups_by_id". */ | |
179 | struct heap_node size_node; /* In oftable's "eviction_groups_by_size". */ | |
180 | struct heap rules; /* Contains "struct rule"s. */ | |
181 | }; | |
182 | ||
15aaf599 BP |
183 | static bool choose_rule_to_evict(struct oftable *table, struct rule **rulep); |
184 | static void ofproto_evict(struct ofproto *) OVS_EXCLUDED(ofproto_mutex); | |
254750ce | 185 | static uint32_t rule_eviction_priority(struct rule *); |
b277c7cc BP |
186 | static void eviction_group_add_rule(struct rule *); |
187 | static void eviction_group_remove_rule(struct rule *); | |
f29152ca | 188 | |
a9b22b7f BP |
189 | /* Criteria that flow_mod and other operations use for selecting rules on |
190 | * which to operate. */ | |
191 | struct rule_criteria { | |
192 | /* An OpenFlow table or 255 for all tables. */ | |
193 | uint8_t table_id; | |
194 | ||
195 | /* OpenFlow matching criteria. Interpreted different in "loose" way by | |
196 | * collect_rules_loose() and "strict" way by collect_rules_strict(), as | |
197 | * defined in the OpenFlow spec. */ | |
198 | struct cls_rule cr; | |
199 | ||
200 | /* Matching criteria for the OpenFlow cookie. Consider a bit B in a rule's | |
201 | * cookie and the corresponding bits C in 'cookie' and M in 'cookie_mask'. | |
202 | * The rule will not be selected if M is 1 and B != C. */ | |
203 | ovs_be64 cookie; | |
204 | ovs_be64 cookie_mask; | |
205 | ||
206 | /* Selection based on actions within a rule: | |
207 | * | |
208 | * If out_port != OFPP_ANY, selects only rules that output to out_port. | |
209 | * If out_group != OFPG_ALL, select only rules that output to out_group. */ | |
210 | ofp_port_t out_port; | |
211 | uint32_t out_group; | |
212 | }; | |
213 | ||
214 | static void rule_criteria_init(struct rule_criteria *, uint8_t table_id, | |
215 | const struct match *match, | |
216 | unsigned int priority, | |
217 | ovs_be64 cookie, ovs_be64 cookie_mask, | |
218 | ofp_port_t out_port, uint32_t out_group); | |
219 | static void rule_criteria_destroy(struct rule_criteria *); | |
220 | ||
15aaf599 BP |
221 | /* A packet that needs to be passed to rule_execute(). |
222 | * | |
223 | * (We can't do this immediately from ofopgroup_complete() because that holds | |
224 | * ofproto_mutex, which rule_execute() needs released.) */ | |
35412852 BP |
225 | struct rule_execute { |
226 | struct list list_node; /* In struct ofproto's "rule_executes" list. */ | |
227 | struct rule *rule; /* Owns a reference to the rule. */ | |
228 | ofp_port_t in_port; | |
229 | struct ofpbuf *packet; /* Owns the packet. */ | |
230 | }; | |
231 | ||
15aaf599 | 232 | static void run_rule_executes(struct ofproto *) OVS_EXCLUDED(ofproto_mutex); |
35412852 BP |
233 | static void destroy_rule_executes(struct ofproto *); |
234 | ||
d0918789 | 235 | /* ofport. */ |
15aaf599 | 236 | static void ofport_destroy__(struct ofport *) OVS_EXCLUDED(ofproto_mutex); |
d0918789 BP |
237 | static void ofport_destroy(struct ofport *); |
238 | ||
239 | static void update_port(struct ofproto *, const char *devname); | |
240 | static int init_ports(struct ofproto *); | |
241 | static void reinit_ports(struct ofproto *); | |
7ee20df1 | 242 | |
fdcea803 GS |
243 | static long long int ofport_get_usage(const struct ofproto *, |
244 | ofp_port_t ofp_port); | |
245 | static void ofport_set_usage(struct ofproto *, ofp_port_t ofp_port, | |
246 | long long int last_used); | |
865b26a4 | 247 | static void ofport_remove_usage(struct ofproto *, ofp_port_t ofp_port); |
fdcea803 GS |
248 | |
249 | /* Ofport usage. | |
250 | * | |
251 | * Keeps track of the currently used and recently used ofport values and is | |
252 | * used to prevent immediate recycling of ofport values. */ | |
253 | struct ofport_usage { | |
254 | struct hmap_node hmap_node; /* In struct ofproto's "ofport_usage" hmap. */ | |
255 | ofp_port_t ofp_port; /* OpenFlow port number. */ | |
256 | long long int last_used; /* Last time the 'ofp_port' was used. LLONG_MAX | |
257 | represents in-use ofports. */ | |
258 | }; | |
259 | ||
254750ce BP |
260 | /* rule. */ |
261 | static void ofproto_rule_destroy__(struct rule *); | |
262 | static void ofproto_rule_send_removed(struct rule *, uint8_t reason); | |
263 | static bool rule_is_modifiable(const struct rule *); | |
254750ce | 264 | |
d0918789 | 265 | /* OpenFlow. */ |
90bf1e07 | 266 | static enum ofperr add_flow(struct ofproto *, struct ofconn *, |
e3b56933 | 267 | struct ofputil_flow_mod *, |
90bf1e07 | 268 | const struct ofp_header *); |
b277c7cc BP |
269 | static enum ofperr modify_flows__(struct ofproto *, struct ofconn *, |
270 | struct ofputil_flow_mod *, | |
a8e547c1 BP |
271 | const struct ofp_header *, |
272 | const struct rule_collection *); | |
ad3efdcb EJ |
273 | static void delete_flow__(struct rule *rule, struct ofopgroup *, |
274 | enum ofp_flow_removed_reason) | |
15aaf599 | 275 | OVS_REQUIRES(ofproto_mutex); |
7e9f8266 BP |
276 | static bool ofproto_group_exists__(const struct ofproto *ofproto, |
277 | uint32_t group_id) | |
278 | OVS_REQ_RDLOCK(ofproto->groups_rwlock); | |
84d68566 SH |
279 | static bool ofproto_group_exists(const struct ofproto *ofproto, |
280 | uint32_t group_id) | |
7e9f8266 | 281 | OVS_EXCLUDED(ofproto->groups_rwlock); |
7395c052 | 282 | static enum ofperr add_group(struct ofproto *, struct ofputil_group_mod *); |
e03248b7 | 283 | static bool handle_openflow(struct ofconn *, const struct ofpbuf *); |
90bf1e07 | 284 | static enum ofperr handle_flow_mod__(struct ofproto *, struct ofconn *, |
e3b56933 | 285 | struct ofputil_flow_mod *, |
15aaf599 BP |
286 | const struct ofp_header *) |
287 | OVS_EXCLUDED(ofproto_mutex); | |
65e0be10 BP |
288 | static void calc_duration(long long int start, long long int now, |
289 | uint32_t *sec, uint32_t *nsec); | |
f29152ca | 290 | |
d0918789 BP |
291 | /* ofproto. */ |
292 | static uint64_t pick_datapath_id(const struct ofproto *); | |
293 | static uint64_t pick_fallback_dpid(void); | |
294 | static void ofproto_destroy__(struct ofproto *); | |
ada3428f | 295 | static void update_mtu(struct ofproto *, struct ofport *); |
6b3f7f02 | 296 | static void meter_delete(struct ofproto *, uint32_t first, uint32_t last); |
f29152ca | 297 | |
d0918789 | 298 | /* unixctl. */ |
abe529af | 299 | static void ofproto_unixctl_init(void); |
f29152ca | 300 | |
abe529af BP |
301 | /* All registered ofproto classes, in probe order. */ |
302 | static const struct ofproto_class **ofproto_classes; | |
303 | static size_t n_ofproto_classes; | |
304 | static size_t allocated_ofproto_classes; | |
7aa697dd | 305 | |
15aaf599 BP |
306 | /* Global lock that protects all flow table operations. */ |
307 | struct ovs_mutex ofproto_mutex = OVS_MUTEX_INITIALIZER; | |
abe7b10f | 308 | |
e79a6c83 | 309 | unsigned ofproto_flow_limit = OFPROTO_FLOW_LIMIT_DEFAULT; |
7155fa52 | 310 | enum ofproto_flow_miss_model flow_miss_model = OFPROTO_HANDLE_MISS_AUTO; |
380f49c4 | 311 | |
e79a6c83 | 312 | size_t n_handlers, n_revalidators; |
6567010f | 313 | |
f797957a | 314 | /* Map from datapath name to struct ofproto, for use by unixctl commands. */ |
abe529af | 315 | static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos); |
ebe482fd | 316 | |
e1b1d06a JP |
317 | /* Initial mappings of port to OpenFlow number mappings. */ |
318 | static struct shash init_ofp_ports = SHASH_INITIALIZER(&init_ofp_ports); | |
319 | ||
abe529af | 320 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); |
f29152ca | 321 | |
40358701 GS |
322 | /* The default value of true waits for flow restore. */ |
323 | static bool flow_restore_wait = true; | |
324 | ||
b0408fca JP |
325 | /* Must be called to initialize the ofproto library. |
326 | * | |
327 | * The caller may pass in 'iface_hints', which contains an shash of | |
328 | * "iface_hint" elements indexed by the interface's name. The provider | |
329 | * may use these hints to describe the startup configuration in order to | |
330 | * reinitialize its state. The caller owns the provided data, so a | |
331 | * provider will make copies of anything required. An ofproto provider | |
332 | * will remove any existing state that is not described by the hint, and | |
333 | * may choose to remove it all. */ | |
334 | void | |
335 | ofproto_init(const struct shash *iface_hints) | |
abe529af | 336 | { |
e1b1d06a | 337 | struct shash_node *node; |
b0408fca | 338 | size_t i; |
f29152ca | 339 | |
b0408fca JP |
340 | ofproto_class_register(&ofproto_dpif_class); |
341 | ||
e1b1d06a JP |
342 | /* Make a local copy, since we don't own 'iface_hints' elements. */ |
343 | SHASH_FOR_EACH(node, iface_hints) { | |
344 | const struct iface_hint *orig_hint = node->data; | |
345 | struct iface_hint *new_hint = xmalloc(sizeof *new_hint); | |
346 | const char *br_type = ofproto_normalize_type(orig_hint->br_type); | |
347 | ||
348 | new_hint->br_name = xstrdup(orig_hint->br_name); | |
349 | new_hint->br_type = xstrdup(br_type); | |
350 | new_hint->ofp_port = orig_hint->ofp_port; | |
351 | ||
352 | shash_add(&init_ofp_ports, node->name, new_hint); | |
353 | } | |
354 | ||
b0408fca | 355 | for (i = 0; i < n_ofproto_classes; i++) { |
e1b1d06a | 356 | ofproto_classes[i]->init(&init_ofp_ports); |
abe529af BP |
357 | } |
358 | } | |
f29152ca | 359 | |
abe529af BP |
360 | /* 'type' should be a normalized datapath type, as returned by |
361 | * ofproto_normalize_type(). Returns the corresponding ofproto_class | |
362 | * structure, or a null pointer if there is none registered for 'type'. */ | |
363 | static const struct ofproto_class * | |
364 | ofproto_class_find__(const char *type) | |
365 | { | |
366 | size_t i; | |
f29152ca | 367 | |
abe529af BP |
368 | for (i = 0; i < n_ofproto_classes; i++) { |
369 | const struct ofproto_class *class = ofproto_classes[i]; | |
370 | struct sset types; | |
371 | bool found; | |
064af421 | 372 | |
abe529af BP |
373 | sset_init(&types); |
374 | class->enumerate_types(&types); | |
375 | found = sset_contains(&types, type); | |
376 | sset_destroy(&types); | |
bcf84111 | 377 | |
abe529af BP |
378 | if (found) { |
379 | return class; | |
380 | } | |
381 | } | |
382 | VLOG_WARN("unknown datapath type %s", type); | |
383 | return NULL; | |
384 | } | |
064af421 | 385 | |
abe529af BP |
386 | /* Registers a new ofproto class. After successful registration, new ofprotos |
387 | * of that type can be created using ofproto_create(). */ | |
388 | int | |
389 | ofproto_class_register(const struct ofproto_class *new_class) | |
390 | { | |
391 | size_t i; | |
7aa697dd | 392 | |
abe529af BP |
393 | for (i = 0; i < n_ofproto_classes; i++) { |
394 | if (ofproto_classes[i] == new_class) { | |
395 | return EEXIST; | |
396 | } | |
397 | } | |
064af421 | 398 | |
abe529af BP |
399 | if (n_ofproto_classes >= allocated_ofproto_classes) { |
400 | ofproto_classes = x2nrealloc(ofproto_classes, | |
401 | &allocated_ofproto_classes, | |
402 | sizeof *ofproto_classes); | |
403 | } | |
404 | ofproto_classes[n_ofproto_classes++] = new_class; | |
405 | return 0; | |
406 | } | |
064af421 | 407 | |
abe529af BP |
408 | /* Unregisters a datapath provider. 'type' must have been previously |
409 | * registered and not currently be in use by any ofprotos. After | |
410 | * unregistration new datapaths of that type cannot be opened using | |
411 | * ofproto_create(). */ | |
412 | int | |
413 | ofproto_class_unregister(const struct ofproto_class *class) | |
414 | { | |
415 | size_t i; | |
76ce9432 | 416 | |
abe529af BP |
417 | for (i = 0; i < n_ofproto_classes; i++) { |
418 | if (ofproto_classes[i] == class) { | |
419 | for (i++; i < n_ofproto_classes; i++) { | |
420 | ofproto_classes[i - 1] = ofproto_classes[i]; | |
421 | } | |
422 | n_ofproto_classes--; | |
423 | return 0; | |
424 | } | |
425 | } | |
426 | VLOG_WARN("attempted to unregister an ofproto class that is not " | |
427 | "registered"); | |
428 | return EAFNOSUPPORT; | |
429 | } | |
4a4cdb3b | 430 | |
f79e673f BP |
431 | /* Clears 'types' and enumerates all registered ofproto types into it. The |
432 | * caller must first initialize the sset. */ | |
433 | void | |
434 | ofproto_enumerate_types(struct sset *types) | |
435 | { | |
abe529af | 436 | size_t i; |
064af421 | 437 | |
c799c306 | 438 | sset_clear(types); |
abe529af BP |
439 | for (i = 0; i < n_ofproto_classes; i++) { |
440 | ofproto_classes[i]->enumerate_types(types); | |
441 | } | |
f79e673f | 442 | } |
064af421 | 443 | |
f79e673f BP |
444 | /* Returns the fully spelled out name for the given ofproto 'type'. |
445 | * | |
446 | * Normalized type string can be compared with strcmp(). Unnormalized type | |
447 | * string might be the same even if they have different spellings. */ | |
448 | const char * | |
449 | ofproto_normalize_type(const char *type) | |
450 | { | |
abe529af | 451 | return type && type[0] ? type : "system"; |
f79e673f | 452 | } |
064af421 | 453 | |
f79e673f BP |
454 | /* Clears 'names' and enumerates the names of all known created ofprotos with |
455 | * the given 'type'. The caller must first initialize the sset. Returns 0 if | |
456 | * successful, otherwise a positive errno value. | |
457 | * | |
458 | * Some kinds of datapaths might not be practically enumerable. This is not | |
459 | * considered an error. */ | |
460 | int | |
461 | ofproto_enumerate_names(const char *type, struct sset *names) | |
462 | { | |
abe529af BP |
463 | const struct ofproto_class *class = ofproto_class_find__(type); |
464 | return class ? class->enumerate_names(type, names) : EAFNOSUPPORT; | |
239ad7d1 | 465 | } |
7aa697dd | 466 | |
064af421 | 467 | int |
abe529af | 468 | ofproto_create(const char *datapath_name, const char *datapath_type, |
064af421 BP |
469 | struct ofproto **ofprotop) |
470 | { | |
abe529af BP |
471 | const struct ofproto_class *class; |
472 | struct ofproto *ofproto; | |
064af421 | 473 | int error; |
c2f0373a | 474 | int i; |
064af421 BP |
475 | |
476 | *ofprotop = NULL; | |
477 | ||
7aa697dd BP |
478 | ofproto_unixctl_init(); |
479 | ||
abe529af BP |
480 | datapath_type = ofproto_normalize_type(datapath_type); |
481 | class = ofproto_class_find__(datapath_type); | |
482 | if (!class) { | |
483 | VLOG_WARN("could not create datapath %s of unknown type %s", | |
484 | datapath_name, datapath_type); | |
485 | return EAFNOSUPPORT; | |
064af421 BP |
486 | } |
487 | ||
abe529af BP |
488 | ofproto = class->alloc(); |
489 | if (!ofproto) { | |
490 | VLOG_ERR("failed to allocate datapath %s of type %s", | |
491 | datapath_name, datapath_type); | |
492 | return ENOMEM; | |
493 | } | |
494 | ||
495 | /* Initialize. */ | |
abe7b10f | 496 | ovs_mutex_lock(&ofproto_mutex); |
abe529af BP |
497 | memset(ofproto, 0, sizeof *ofproto); |
498 | ofproto->ofproto_class = class; | |
499 | ofproto->name = xstrdup(datapath_name); | |
500 | ofproto->type = xstrdup(datapath_type); | |
501 | hmap_insert(&all_ofprotos, &ofproto->hmap_node, | |
502 | hash_string(ofproto->name, 0)); | |
503 | ofproto->datapath_id = 0; | |
8402c74b | 504 | ofproto->forward_bpdu = false; |
abe529af | 505 | ofproto->fallback_dpid = pick_fallback_dpid(); |
061bfea4 BP |
506 | ofproto->mfr_desc = NULL; |
507 | ofproto->hw_desc = NULL; | |
508 | ofproto->sw_desc = NULL; | |
509 | ofproto->serial_desc = NULL; | |
510 | ofproto->dp_desc = NULL; | |
7257b535 | 511 | ofproto->frag_handling = OFPC_FRAG_NORMAL; |
abe529af | 512 | hmap_init(&ofproto->ports); |
fdcea803 | 513 | hmap_init(&ofproto->ofport_usage); |
abe529af | 514 | shash_init(&ofproto->port_by_name); |
e1b1d06a | 515 | simap_init(&ofproto->ofp_requests); |
430dbb14 | 516 | ofproto->max_ports = ofp_to_u16(OFPP_MAX); |
448c2fa8 | 517 | ofproto->eviction_group_timer = LLONG_MIN; |
6c1491fb BP |
518 | ofproto->tables = NULL; |
519 | ofproto->n_tables = 0; | |
98eaac36 | 520 | hindex_init(&ofproto->cookies); |
e503cc19 | 521 | list_init(&ofproto->expirable); |
abe529af | 522 | ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name); |
7ee20df1 BP |
523 | ofproto->state = S_OPENFLOW; |
524 | list_init(&ofproto->pending); | |
dd5616b3 | 525 | ofproto->n_pending = 0; |
7ee20df1 | 526 | hmap_init(&ofproto->deletions); |
35412852 | 527 | guarded_list_init(&ofproto->rule_executes); |
a5b8d268 BP |
528 | ofproto->n_add = ofproto->n_delete = ofproto->n_modify = 0; |
529 | ofproto->first_op = ofproto->last_op = LLONG_MIN; | |
530 | ofproto->next_op_report = LLONG_MAX; | |
531 | ofproto->op_backoff = LLONG_MIN; | |
52a90c29 BP |
532 | ofproto->vlan_bitmap = NULL; |
533 | ofproto->vlans_changed = false; | |
ada3428f | 534 | ofproto->min_mtu = INT_MAX; |
7395c052 NZ |
535 | ovs_rwlock_init(&ofproto->groups_rwlock); |
536 | hmap_init(&ofproto->groups); | |
abe7b10f | 537 | ovs_mutex_unlock(&ofproto_mutex); |
7cb279c2 SH |
538 | ofproto->ogf.capabilities = OFPGFC_CHAINING | OFPGFC_SELECT_LIVENESS | |
539 | OFPGFC_SELECT_WEIGHT; | |
f4fb341b | 540 | ofproto->ogf.max_groups[OFPGT11_ALL] = OFPG_MAX; |
fe7e5749 | 541 | ofproto->ogf.max_groups[OFPGT11_SELECT] = OFPG_MAX; |
f4fb341b | 542 | ofproto->ogf.max_groups[OFPGT11_INDIRECT] = OFPG_MAX; |
dd8cd4b4 | 543 | ofproto->ogf.max_groups[OFPGT11_FF] = OFPG_MAX; |
ddc627ad | 544 | ofproto->ogf.actions[0] = |
f0e7025f BP |
545 | (1 << OFPAT11_OUTPUT) | |
546 | (1 << OFPAT11_COPY_TTL_OUT) | | |
547 | (1 << OFPAT11_COPY_TTL_IN) | | |
548 | (1 << OFPAT11_SET_MPLS_TTL) | | |
549 | (1 << OFPAT11_DEC_MPLS_TTL) | | |
550 | (1 << OFPAT11_PUSH_VLAN) | | |
551 | (1 << OFPAT11_POP_VLAN) | | |
552 | (1 << OFPAT11_PUSH_MPLS) | | |
553 | (1 << OFPAT11_POP_MPLS) | | |
554 | (1 << OFPAT11_SET_QUEUE) | | |
555 | (1 << OFPAT11_GROUP) | | |
556 | (1 << OFPAT11_SET_NW_TTL) | | |
557 | (1 << OFPAT11_DEC_NW_TTL) | | |
558 | (1 << OFPAT12_SET_FIELD); | |
559 | /* not supported: | |
560 | * (1 << OFPAT13_PUSH_PBB) | | |
561 | * (1 << OFPAT13_POP_PBB) */ | |
abe529af | 562 | |
0f5f95a9 | 563 | error = ofproto->ofproto_class->construct(ofproto); |
19a87e36 | 564 | if (error) { |
abe529af | 565 | VLOG_ERR("failed to open datapath %s: %s", |
10a89ef0 | 566 | datapath_name, ovs_strerror(error)); |
abe529af | 567 | ofproto_destroy__(ofproto); |
19a87e36 BP |
568 | return error; |
569 | } | |
073e2a6f | 570 | |
c2f0373a | 571 | /* Check that hidden tables, if any, are at the end. */ |
cb22974d | 572 | ovs_assert(ofproto->n_tables); |
c2f0373a BP |
573 | for (i = 0; i + 1 < ofproto->n_tables; i++) { |
574 | enum oftable_flags flags = ofproto->tables[i].flags; | |
575 | enum oftable_flags next_flags = ofproto->tables[i + 1].flags; | |
576 | ||
cb22974d | 577 | ovs_assert(!(flags & OFTABLE_HIDDEN) || next_flags & OFTABLE_HIDDEN); |
c2f0373a | 578 | } |
19a87e36 | 579 | |
abe529af | 580 | ofproto->datapath_id = pick_datapath_id(ofproto); |
abe529af | 581 | init_ports(ofproto); |
7aa697dd | 582 | |
9cae45dc JR |
583 | /* Initialize meters table. */ |
584 | if (ofproto->ofproto_class->meter_get_features) { | |
585 | ofproto->ofproto_class->meter_get_features(ofproto, | |
586 | &ofproto->meter_features); | |
587 | } else { | |
588 | memset(&ofproto->meter_features, 0, sizeof ofproto->meter_features); | |
589 | } | |
590 | ofproto->meters = xzalloc((ofproto->meter_features.max_meters + 1) | |
591 | * sizeof(struct meter *)); | |
592 | ||
abe529af | 593 | *ofprotop = ofproto; |
064af421 BP |
594 | return 0; |
595 | } | |
596 | ||
91858960 BP |
597 | /* Must be called (only) by an ofproto implementation in its constructor |
598 | * function. See the large comment on 'construct' in struct ofproto_class for | |
599 | * details. */ | |
0f5f95a9 BP |
600 | void |
601 | ofproto_init_tables(struct ofproto *ofproto, int n_tables) | |
602 | { | |
603 | struct oftable *table; | |
604 | ||
cb22974d BP |
605 | ovs_assert(!ofproto->n_tables); |
606 | ovs_assert(n_tables >= 1 && n_tables <= 255); | |
0f5f95a9 BP |
607 | |
608 | ofproto->n_tables = n_tables; | |
609 | ofproto->tables = xmalloc(n_tables * sizeof *ofproto->tables); | |
610 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
611 | oftable_init(table); | |
612 | } | |
613 | } | |
614 | ||
91858960 BP |
615 | /* To be optionally called (only) by an ofproto implementation in its |
616 | * constructor function. See the large comment on 'construct' in struct | |
617 | * ofproto_class for details. | |
618 | * | |
619 | * Sets the maximum number of ports to 'max_ports'. The ofproto generic layer | |
620 | * will then ensure that actions passed into the ofproto implementation will | |
621 | * not refer to OpenFlow ports numbered 'max_ports' or higher. If this | |
622 | * function is not called, there will be no such restriction. | |
623 | * | |
624 | * Reserved ports numbered OFPP_MAX and higher are special and not subject to | |
625 | * the 'max_ports' restriction. */ | |
626 | void | |
430dbb14 | 627 | ofproto_init_max_ports(struct ofproto *ofproto, uint16_t max_ports) |
91858960 | 628 | { |
430dbb14 | 629 | ovs_assert(max_ports <= ofp_to_u16(OFPP_MAX)); |
91858960 BP |
630 | ofproto->max_ports = max_ports; |
631 | } | |
632 | ||
e825ace2 BP |
633 | uint64_t |
634 | ofproto_get_datapath_id(const struct ofproto *ofproto) | |
635 | { | |
636 | return ofproto->datapath_id; | |
637 | } | |
638 | ||
064af421 BP |
639 | void |
640 | ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id) | |
641 | { | |
642 | uint64_t old_dpid = p->datapath_id; | |
fa60c019 | 643 | p->datapath_id = datapath_id ? datapath_id : pick_datapath_id(p); |
064af421 | 644 | if (p->datapath_id != old_dpid) { |
76ce9432 BP |
645 | /* Force all active connections to reconnect, since there is no way to |
646 | * notify a controller that the datapath ID has changed. */ | |
fa05809b | 647 | ofproto_reconnect_controllers(p); |
064af421 BP |
648 | } |
649 | } | |
650 | ||
76ce9432 BP |
651 | void |
652 | ofproto_set_controllers(struct ofproto *p, | |
653 | const struct ofproto_controller *controllers, | |
1d9ffc17 | 654 | size_t n_controllers, uint32_t allowed_versions) |
76ce9432 | 655 | { |
1d9ffc17 SH |
656 | connmgr_set_controllers(p->connmgr, controllers, n_controllers, |
657 | allowed_versions); | |
064af421 BP |
658 | } |
659 | ||
31681a5d JP |
660 | void |
661 | ofproto_set_fail_mode(struct ofproto *p, enum ofproto_fail_mode fail_mode) | |
662 | { | |
19a87e36 | 663 | connmgr_set_fail_mode(p->connmgr, fail_mode); |
31681a5d JP |
664 | } |
665 | ||
fa05809b BP |
666 | /* Drops the connections between 'ofproto' and all of its controllers, forcing |
667 | * them to reconnect. */ | |
668 | void | |
669 | ofproto_reconnect_controllers(struct ofproto *ofproto) | |
670 | { | |
19a87e36 | 671 | connmgr_reconnect(ofproto->connmgr); |
917e50e1 BP |
672 | } |
673 | ||
674 | /* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s | |
675 | * in-band control should guarantee access, in the same way that in-band | |
676 | * control guarantees access to OpenFlow controllers. */ | |
677 | void | |
678 | ofproto_set_extra_in_band_remotes(struct ofproto *ofproto, | |
679 | const struct sockaddr_in *extras, size_t n) | |
680 | { | |
19a87e36 | 681 | connmgr_set_extra_in_band_remotes(ofproto->connmgr, extras, n); |
917e50e1 BP |
682 | } |
683 | ||
b1da6250 BP |
684 | /* Sets the OpenFlow queue used by flows set up by in-band control on |
685 | * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control | |
686 | * flows will use the default queue. */ | |
687 | void | |
688 | ofproto_set_in_band_queue(struct ofproto *ofproto, int queue_id) | |
689 | { | |
19a87e36 | 690 | connmgr_set_in_band_queue(ofproto->connmgr, queue_id); |
b1da6250 BP |
691 | } |
692 | ||
084f5290 SH |
693 | /* Sets the number of flows at which eviction from the kernel flow table |
694 | * will occur. */ | |
695 | void | |
e79a6c83 | 696 | ofproto_set_flow_limit(unsigned limit) |
084f5290 | 697 | { |
e79a6c83 | 698 | ofproto_flow_limit = limit; |
084f5290 SH |
699 | } |
700 | ||
7155fa52 JS |
701 | /* Sets the path for handling flow misses. */ |
702 | void | |
703 | ofproto_set_flow_miss_model(unsigned model) | |
704 | { | |
705 | flow_miss_model = model; | |
706 | } | |
707 | ||
b53055f4 | 708 | /* If forward_bpdu is true, the NORMAL action will forward frames with |
8402c74b SS |
709 | * reserved (e.g. STP) destination Ethernet addresses. if forward_bpdu is false, |
710 | * the NORMAL action will drop these frames. */ | |
711 | void | |
712 | ofproto_set_forward_bpdu(struct ofproto *ofproto, bool forward_bpdu) | |
713 | { | |
714 | bool old_val = ofproto->forward_bpdu; | |
715 | ofproto->forward_bpdu = forward_bpdu; | |
716 | if (old_val != ofproto->forward_bpdu) { | |
717 | if (ofproto->ofproto_class->forward_bpdu_changed) { | |
718 | ofproto->ofproto_class->forward_bpdu_changed(ofproto); | |
719 | } | |
b53055f4 | 720 | } |
8402c74b SS |
721 | } |
722 | ||
e764773c | 723 | /* Sets the MAC aging timeout for the OFPP_NORMAL action on 'ofproto' to |
c4069512 BP |
724 | * 'idle_time', in seconds, and the maximum number of MAC table entries to |
725 | * 'max_entries'. */ | |
e764773c | 726 | void |
c4069512 BP |
727 | ofproto_set_mac_table_config(struct ofproto *ofproto, unsigned idle_time, |
728 | size_t max_entries) | |
e764773c | 729 | { |
c4069512 BP |
730 | if (ofproto->ofproto_class->set_mac_table_config) { |
731 | ofproto->ofproto_class->set_mac_table_config(ofproto, idle_time, | |
732 | max_entries); | |
e764773c BP |
733 | } |
734 | } | |
735 | ||
448a4b2f | 736 | void |
30ea0da7 | 737 | ofproto_set_threads(int n_handlers_, int n_revalidators_) |
448a4b2f | 738 | { |
e79a6c83 EJ |
739 | int threads = MAX(count_cpu_cores(), 2); |
740 | ||
30ea0da7 GS |
741 | n_revalidators = MAX(n_revalidators_, 0); |
742 | n_handlers = MAX(n_handlers_, 0); | |
e79a6c83 EJ |
743 | |
744 | if (!n_revalidators) { | |
745 | n_revalidators = n_handlers | |
746 | ? MAX(threads - (int) n_handlers, 1) | |
747 | : threads / 4 + 1; | |
748 | } | |
749 | ||
750 | if (!n_handlers) { | |
751 | n_handlers = MAX(threads - (int) n_revalidators, 1); | |
752 | } | |
448a4b2f AW |
753 | } |
754 | ||
8b6ff729 BP |
755 | void |
756 | ofproto_set_dp_desc(struct ofproto *p, const char *dp_desc) | |
757 | { | |
758 | free(p->dp_desc); | |
759 | p->dp_desc = dp_desc ? xstrdup(dp_desc) : NULL; | |
760 | } | |
761 | ||
064af421 | 762 | int |
81e2083f | 763 | ofproto_set_snoops(struct ofproto *ofproto, const struct sset *snoops) |
064af421 | 764 | { |
19a87e36 | 765 | return connmgr_set_snoops(ofproto->connmgr, snoops); |
064af421 BP |
766 | } |
767 | ||
768 | int | |
0193b2af JG |
769 | ofproto_set_netflow(struct ofproto *ofproto, |
770 | const struct netflow_options *nf_options) | |
064af421 | 771 | { |
abe529af BP |
772 | if (nf_options && sset_is_empty(&nf_options->collectors)) { |
773 | nf_options = NULL; | |
774 | } | |
775 | ||
776 | if (ofproto->ofproto_class->set_netflow) { | |
777 | return ofproto->ofproto_class->set_netflow(ofproto, nf_options); | |
064af421 | 778 | } else { |
abe529af | 779 | return nf_options ? EOPNOTSUPP : 0; |
064af421 BP |
780 | } |
781 | } | |
782 | ||
abe529af | 783 | int |
72b06300 BP |
784 | ofproto_set_sflow(struct ofproto *ofproto, |
785 | const struct ofproto_sflow_options *oso) | |
786 | { | |
abe529af BP |
787 | if (oso && sset_is_empty(&oso->targets)) { |
788 | oso = NULL; | |
789 | } | |
72b06300 | 790 | |
abe529af BP |
791 | if (ofproto->ofproto_class->set_sflow) { |
792 | return ofproto->ofproto_class->set_sflow(ofproto, oso); | |
72b06300 | 793 | } else { |
abe529af | 794 | return oso ? EOPNOTSUPP : 0; |
72b06300 BP |
795 | } |
796 | } | |
29089a54 RL |
797 | |
798 | int | |
799 | ofproto_set_ipfix(struct ofproto *ofproto, | |
800 | const struct ofproto_ipfix_bridge_exporter_options *bo, | |
801 | const struct ofproto_ipfix_flow_exporter_options *fo, | |
802 | size_t n_fo) | |
803 | { | |
804 | if (ofproto->ofproto_class->set_ipfix) { | |
805 | return ofproto->ofproto_class->set_ipfix(ofproto, bo, fo, n_fo); | |
806 | } else { | |
807 | return (bo || fo) ? EOPNOTSUPP : 0; | |
808 | } | |
809 | } | |
40358701 GS |
810 | |
811 | void | |
812 | ofproto_set_flow_restore_wait(bool flow_restore_wait_db) | |
813 | { | |
814 | flow_restore_wait = flow_restore_wait_db; | |
815 | } | |
816 | ||
817 | bool | |
818 | ofproto_get_flow_restore_wait(void) | |
819 | { | |
820 | return flow_restore_wait; | |
821 | } | |
822 | ||
e7934396 | 823 | \f |
21f7563c JP |
824 | /* Spanning Tree Protocol (STP) configuration. */ |
825 | ||
826 | /* Configures STP on 'ofproto' using the settings defined in 's'. If | |
827 | * 's' is NULL, disables STP. | |
828 | * | |
829 | * Returns 0 if successful, otherwise a positive errno value. */ | |
830 | int | |
831 | ofproto_set_stp(struct ofproto *ofproto, | |
832 | const struct ofproto_stp_settings *s) | |
833 | { | |
834 | return (ofproto->ofproto_class->set_stp | |
835 | ? ofproto->ofproto_class->set_stp(ofproto, s) | |
836 | : EOPNOTSUPP); | |
837 | } | |
838 | ||
839 | /* Retrieves STP status of 'ofproto' and stores it in 's'. If the | |
840 | * 'enabled' member of 's' is false, then the other members are not | |
841 | * meaningful. | |
842 | * | |
843 | * Returns 0 if successful, otherwise a positive errno value. */ | |
844 | int | |
845 | ofproto_get_stp_status(struct ofproto *ofproto, | |
846 | struct ofproto_stp_status *s) | |
847 | { | |
848 | return (ofproto->ofproto_class->get_stp_status | |
849 | ? ofproto->ofproto_class->get_stp_status(ofproto, s) | |
850 | : EOPNOTSUPP); | |
851 | } | |
852 | ||
853 | /* Configures STP on 'ofp_port' of 'ofproto' using the settings defined | |
854 | * in 's'. The caller is responsible for assigning STP port numbers | |
855 | * (using the 'port_num' member in the range of 1 through 255, inclusive) | |
856 | * and ensuring there are no duplicates. If the 's' is NULL, then STP | |
857 | * is disabled on the port. | |
858 | * | |
859 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
860 | int | |
4e022ec0 | 861 | ofproto_port_set_stp(struct ofproto *ofproto, ofp_port_t ofp_port, |
21f7563c JP |
862 | const struct ofproto_port_stp_settings *s) |
863 | { | |
864 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
865 | if (!ofport) { | |
866 | VLOG_WARN("%s: cannot configure STP on nonexistent port %"PRIu16, | |
867 | ofproto->name, ofp_port); | |
868 | return ENODEV; | |
869 | } | |
870 | ||
871 | return (ofproto->ofproto_class->set_stp_port | |
872 | ? ofproto->ofproto_class->set_stp_port(ofport, s) | |
873 | : EOPNOTSUPP); | |
874 | } | |
875 | ||
876 | /* Retrieves STP port status of 'ofp_port' on 'ofproto' and stores it in | |
877 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
878 | * are not meaningful. | |
879 | * | |
880 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
881 | int | |
4e022ec0 | 882 | ofproto_port_get_stp_status(struct ofproto *ofproto, ofp_port_t ofp_port, |
21f7563c JP |
883 | struct ofproto_port_stp_status *s) |
884 | { | |
885 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
886 | if (!ofport) { | |
b0a5c43b JP |
887 | VLOG_WARN_RL(&rl, "%s: cannot get STP status on nonexistent " |
888 | "port %"PRIu16, ofproto->name, ofp_port); | |
21f7563c JP |
889 | return ENODEV; |
890 | } | |
891 | ||
892 | return (ofproto->ofproto_class->get_stp_port_status | |
893 | ? ofproto->ofproto_class->get_stp_port_status(ofport, s) | |
894 | : EOPNOTSUPP); | |
895 | } | |
fd28ce3a JS |
896 | |
897 | /* Retrieves STP port statistics of 'ofp_port' on 'ofproto' and stores it in | |
898 | * 's'. If the 'enabled' member in 's' is false, then the other members | |
899 | * are not meaningful. | |
900 | * | |
901 | * Returns 0 if successful, otherwise a positive errno value.*/ | |
902 | int | |
903 | ofproto_port_get_stp_stats(struct ofproto *ofproto, ofp_port_t ofp_port, | |
904 | struct ofproto_port_stp_stats *s) | |
905 | { | |
906 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
907 | if (!ofport) { | |
908 | VLOG_WARN_RL(&rl, "%s: cannot get STP stats on nonexistent " | |
909 | "port %"PRIu16, ofproto->name, ofp_port); | |
910 | return ENODEV; | |
911 | } | |
912 | ||
913 | return (ofproto->ofproto_class->get_stp_port_stats | |
914 | ? ofproto->ofproto_class->get_stp_port_stats(ofport, s) | |
915 | : EOPNOTSUPP); | |
916 | } | |
21f7563c | 917 | \f |
8b36f51e EJ |
918 | /* Queue DSCP configuration. */ |
919 | ||
920 | /* Registers meta-data associated with the 'n_qdscp' Qualities of Service | |
921 | * 'queues' attached to 'ofport'. This data is not intended to be sufficient | |
922 | * to implement QoS. Instead, it is used to implement features which require | |
923 | * knowledge of what queues exist on a port, and some basic information about | |
924 | * them. | |
925 | * | |
926 | * Returns 0 if successful, otherwise a positive errno value. */ | |
927 | int | |
4e022ec0 | 928 | ofproto_port_set_queues(struct ofproto *ofproto, ofp_port_t ofp_port, |
8b36f51e EJ |
929 | const struct ofproto_port_queue *queues, |
930 | size_t n_queues) | |
931 | { | |
932 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
933 | ||
934 | if (!ofport) { | |
935 | VLOG_WARN("%s: cannot set queues on nonexistent port %"PRIu16, | |
936 | ofproto->name, ofp_port); | |
937 | return ENODEV; | |
938 | } | |
939 | ||
940 | return (ofproto->ofproto_class->set_queues | |
941 | ? ofproto->ofproto_class->set_queues(ofport, queues, n_queues) | |
942 | : EOPNOTSUPP); | |
943 | } | |
944 | \f | |
e7934396 BP |
945 | /* Connectivity Fault Management configuration. */ |
946 | ||
892815f5 | 947 | /* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */ |
e7934396 | 948 | void |
4e022ec0 | 949 | ofproto_port_clear_cfm(struct ofproto *ofproto, ofp_port_t ofp_port) |
e7934396 | 950 | { |
abe529af BP |
951 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
952 | if (ofport && ofproto->ofproto_class->set_cfm) { | |
a5610457 | 953 | ofproto->ofproto_class->set_cfm(ofport, NULL); |
e7934396 BP |
954 | } |
955 | } | |
72b06300 | 956 | |
892815f5 | 957 | /* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes |
93b8df38 EJ |
958 | * basic configuration from the configuration members in 'cfm', and the remote |
959 | * maintenance point ID from remote_mpid. Ignores the statistics members of | |
960 | * 'cfm'. | |
e7934396 | 961 | * |
892815f5 | 962 | * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */ |
e7934396 | 963 | void |
4e022ec0 | 964 | ofproto_port_set_cfm(struct ofproto *ofproto, ofp_port_t ofp_port, |
a5610457 | 965 | const struct cfm_settings *s) |
e7934396 BP |
966 | { |
967 | struct ofport *ofport; | |
abe529af | 968 | int error; |
e7934396 | 969 | |
abe529af | 970 | ofport = ofproto_get_port(ofproto, ofp_port); |
e7934396 | 971 | if (!ofport) { |
892815f5 BP |
972 | VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16, |
973 | ofproto->name, ofp_port); | |
e7934396 BP |
974 | return; |
975 | } | |
976 | ||
93b8df38 EJ |
977 | /* XXX: For configuration simplicity, we only support one remote_mpid |
978 | * outside of the CFM module. It's not clear if this is the correct long | |
979 | * term solution or not. */ | |
abe529af | 980 | error = (ofproto->ofproto_class->set_cfm |
a5610457 | 981 | ? ofproto->ofproto_class->set_cfm(ofport, s) |
abe529af BP |
982 | : EOPNOTSUPP); |
983 | if (error) { | |
984 | VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed (%s)", | |
985 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
10a89ef0 | 986 | ovs_strerror(error)); |
e7934396 | 987 | } |
e7934396 | 988 | } |
e7934396 | 989 | |
ccc09689 EJ |
990 | /* Configures BFD on 'ofp_port' in 'ofproto'. This function has no effect if |
991 | * 'ofproto' does not have a port 'ofp_port'. */ | |
992 | void | |
4e022ec0 | 993 | ofproto_port_set_bfd(struct ofproto *ofproto, ofp_port_t ofp_port, |
ccc09689 EJ |
994 | const struct smap *cfg) |
995 | { | |
996 | struct ofport *ofport; | |
997 | int error; | |
998 | ||
999 | ofport = ofproto_get_port(ofproto, ofp_port); | |
1000 | if (!ofport) { | |
1001 | VLOG_WARN("%s: cannot configure bfd on nonexistent port %"PRIu16, | |
1002 | ofproto->name, ofp_port); | |
e8999bdc | 1003 | return; |
ccc09689 EJ |
1004 | } |
1005 | ||
1006 | error = (ofproto->ofproto_class->set_bfd | |
1007 | ? ofproto->ofproto_class->set_bfd(ofport, cfg) | |
1008 | : EOPNOTSUPP); | |
1009 | if (error) { | |
1010 | VLOG_WARN("%s: bfd configuration on port %"PRIu16" (%s) failed (%s)", | |
1011 | ofproto->name, ofp_port, netdev_get_name(ofport->netdev), | |
10a89ef0 | 1012 | ovs_strerror(error)); |
ccc09689 EJ |
1013 | } |
1014 | } | |
1015 | ||
1016 | /* Populates 'status' with key value pairs indicating the status of the BFD | |
1017 | * session on 'ofp_port'. This information is intended to be populated in the | |
1018 | * OVS database. Has no effect if 'ofp_port' is not na OpenFlow port in | |
1019 | * 'ofproto'. */ | |
1020 | int | |
4e022ec0 | 1021 | ofproto_port_get_bfd_status(struct ofproto *ofproto, ofp_port_t ofp_port, |
ccc09689 EJ |
1022 | struct smap *status) |
1023 | { | |
1024 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
1025 | return (ofport && ofproto->ofproto_class->get_bfd_status | |
1026 | ? ofproto->ofproto_class->get_bfd_status(ofport, status) | |
1027 | : EOPNOTSUPP); | |
1028 | } | |
1029 | ||
fa066f01 BP |
1030 | /* Checks the status of LACP negotiation for 'ofp_port' within ofproto. |
1031 | * Returns 1 if LACP partner information for 'ofp_port' is up-to-date, | |
1032 | * 0 if LACP partner information is not current (generally indicating a | |
1033 | * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */ | |
1034 | int | |
4e022ec0 | 1035 | ofproto_port_is_lacp_current(struct ofproto *ofproto, ofp_port_t ofp_port) |
fa066f01 | 1036 | { |
abe529af BP |
1037 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1038 | return (ofport && ofproto->ofproto_class->port_is_lacp_current | |
1039 | ? ofproto->ofproto_class->port_is_lacp_current(ofport) | |
fa066f01 | 1040 | : -1); |
e7934396 | 1041 | } |
e7934396 | 1042 | \f |
fa066f01 | 1043 | /* Bundles. */ |
e7934396 | 1044 | |
abe529af BP |
1045 | /* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'. |
1046 | * A bundle is the same concept as a Port in OVSDB, that is, it consists of one | |
1047 | * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN | |
1048 | * configuration plus, if there is more than one slave, a bonding | |
1049 | * configuration. | |
1050 | * | |
1051 | * If 'aux' is already registered then this function updates its configuration | |
1052 | * to 's'. Otherwise, this function registers a new bundle. | |
1053 | * | |
1054 | * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL | |
1055 | * port. */ | |
1056 | int | |
1057 | ofproto_bundle_register(struct ofproto *ofproto, void *aux, | |
1058 | const struct ofproto_bundle_settings *s) | |
fa066f01 | 1059 | { |
abe529af BP |
1060 | return (ofproto->ofproto_class->bundle_set |
1061 | ? ofproto->ofproto_class->bundle_set(ofproto, aux, s) | |
1062 | : EOPNOTSUPP); | |
fa066f01 BP |
1063 | } |
1064 | ||
abe529af BP |
1065 | /* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'. |
1066 | * If no such bundle has been registered, this has no effect. */ | |
1067 | int | |
1068 | ofproto_bundle_unregister(struct ofproto *ofproto, void *aux) | |
e7934396 | 1069 | { |
abe529af | 1070 | return ofproto_bundle_register(ofproto, aux, NULL); |
e7934396 | 1071 | } |
fa066f01 | 1072 | |
e7934396 | 1073 | \f |
abe529af BP |
1074 | /* Registers a mirror associated with client data pointer 'aux' in 'ofproto'. |
1075 | * If 'aux' is already registered then this function updates its configuration | |
c06bba01 | 1076 | * to 's'. Otherwise, this function registers a new mirror. */ |
abe529af BP |
1077 | int |
1078 | ofproto_mirror_register(struct ofproto *ofproto, void *aux, | |
1079 | const struct ofproto_mirror_settings *s) | |
064af421 | 1080 | { |
abe529af BP |
1081 | return (ofproto->ofproto_class->mirror_set |
1082 | ? ofproto->ofproto_class->mirror_set(ofproto, aux, s) | |
1083 | : EOPNOTSUPP); | |
064af421 BP |
1084 | } |
1085 | ||
abe529af BP |
1086 | /* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'. |
1087 | * If no mirror has been registered, this has no effect. */ | |
1088 | int | |
1089 | ofproto_mirror_unregister(struct ofproto *ofproto, void *aux) | |
064af421 | 1090 | { |
abe529af | 1091 | return ofproto_mirror_register(ofproto, aux, NULL); |
064af421 BP |
1092 | } |
1093 | ||
9d24de3b JP |
1094 | /* Retrieves statistics from mirror associated with client data pointer |
1095 | * 'aux' in 'ofproto'. Stores packet and byte counts in 'packets' and | |
1096 | * 'bytes', respectively. If a particular counters is not supported, | |
1097 | * the appropriate argument is set to UINT64_MAX. */ | |
1098 | int | |
1099 | ofproto_mirror_get_stats(struct ofproto *ofproto, void *aux, | |
1100 | uint64_t *packets, uint64_t *bytes) | |
1101 | { | |
1102 | if (!ofproto->ofproto_class->mirror_get_stats) { | |
1103 | *packets = *bytes = UINT64_MAX; | |
1104 | return EOPNOTSUPP; | |
1105 | } | |
1106 | ||
1107 | return ofproto->ofproto_class->mirror_get_stats(ofproto, aux, | |
1108 | packets, bytes); | |
1109 | } | |
1110 | ||
abe529af BP |
1111 | /* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on |
1112 | * which all packets are flooded, instead of using MAC learning. If | |
1113 | * 'flood_vlans' is NULL, then MAC learning applies to all VLANs. | |
1114 | * | |
1115 | * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL | |
1116 | * port. */ | |
1117 | int | |
1118 | ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans) | |
abdfe474 | 1119 | { |
abe529af BP |
1120 | return (ofproto->ofproto_class->set_flood_vlans |
1121 | ? ofproto->ofproto_class->set_flood_vlans(ofproto, flood_vlans) | |
1122 | : EOPNOTSUPP); | |
abdfe474 JP |
1123 | } |
1124 | ||
abe529af BP |
1125 | /* Returns true if 'aux' is a registered bundle that is currently in use as the |
1126 | * output for a mirror. */ | |
1127 | bool | |
b4affc74 | 1128 | ofproto_is_mirror_output_bundle(const struct ofproto *ofproto, void *aux) |
abe529af BP |
1129 | { |
1130 | return (ofproto->ofproto_class->is_mirror_output_bundle | |
1131 | ? ofproto->ofproto_class->is_mirror_output_bundle(ofproto, aux) | |
1132 | : false); | |
1133 | } | |
1134 | \f | |
254750ce BP |
1135 | /* Configuration of OpenFlow tables. */ |
1136 | ||
1137 | /* Returns the number of OpenFlow tables in 'ofproto'. */ | |
1138 | int | |
1139 | ofproto_get_n_tables(const struct ofproto *ofproto) | |
1140 | { | |
1141 | return ofproto->n_tables; | |
1142 | } | |
1143 | ||
1144 | /* Configures the OpenFlow table in 'ofproto' with id 'table_id' with the | |
1145 | * settings from 's'. 'table_id' must be in the range 0 through the number of | |
1146 | * OpenFlow tables in 'ofproto' minus 1, inclusive. | |
1147 | * | |
1148 | * For read-only tables, only the name may be configured. */ | |
1149 | void | |
1150 | ofproto_configure_table(struct ofproto *ofproto, int table_id, | |
1151 | const struct ofproto_table_settings *s) | |
1152 | { | |
1153 | struct oftable *table; | |
1154 | ||
cb22974d | 1155 | ovs_assert(table_id >= 0 && table_id < ofproto->n_tables); |
254750ce BP |
1156 | table = &ofproto->tables[table_id]; |
1157 | ||
1158 | oftable_set_name(table, s->name); | |
1159 | ||
1160 | if (table->flags & OFTABLE_READONLY) { | |
1161 | return; | |
1162 | } | |
1163 | ||
1164 | if (s->groups) { | |
1165 | oftable_enable_eviction(table, s->groups, s->n_groups); | |
1166 | } else { | |
1167 | oftable_disable_eviction(table); | |
1168 | } | |
1169 | ||
1170 | table->max_flows = s->max_flows; | |
06f81620 | 1171 | fat_rwlock_wrlock(&table->cls.rwlock); |
254750ce BP |
1172 | if (classifier_count(&table->cls) > table->max_flows |
1173 | && table->eviction_fields) { | |
1174 | /* 'table' contains more flows than allowed. We might not be able to | |
1175 | * evict them right away because of the asynchronous nature of flow | |
1176 | * table changes. Schedule eviction for later. */ | |
1177 | switch (ofproto->state) { | |
1178 | case S_OPENFLOW: | |
1179 | ofproto->state = S_EVICT; | |
1180 | break; | |
1181 | case S_EVICT: | |
1182 | case S_FLUSH: | |
1183 | /* We're already deleting flows, nothing more to do. */ | |
1184 | break; | |
1185 | } | |
1186 | } | |
13751fd8 JR |
1187 | |
1188 | classifier_set_prefix_fields(&table->cls, | |
1189 | s->prefix_fields, s->n_prefix_fields); | |
1190 | ||
06f81620 | 1191 | fat_rwlock_unlock(&table->cls.rwlock); |
254750ce BP |
1192 | } |
1193 | \f | |
81e2083f BP |
1194 | bool |
1195 | ofproto_has_snoops(const struct ofproto *ofproto) | |
1196 | { | |
1197 | return connmgr_has_snoops(ofproto->connmgr); | |
1198 | } | |
1199 | ||
064af421 | 1200 | void |
81e2083f | 1201 | ofproto_get_snoops(const struct ofproto *ofproto, struct sset *snoops) |
064af421 | 1202 | { |
19a87e36 | 1203 | connmgr_get_snoops(ofproto->connmgr, snoops); |
064af421 BP |
1204 | } |
1205 | ||
15aaf599 | 1206 | static void |
ad9ca2fc BP |
1207 | ofproto_rule_delete__(struct ofproto *ofproto, struct rule *rule, |
1208 | uint8_t reason) | |
15aaf599 BP |
1209 | OVS_REQUIRES(ofproto_mutex) |
1210 | { | |
1211 | struct ofopgroup *group; | |
1212 | ||
1213 | ovs_assert(!rule->pending); | |
15aaf599 BP |
1214 | |
1215 | group = ofopgroup_create_unattached(ofproto); | |
ad9ca2fc | 1216 | delete_flow__(rule, group, reason); |
15aaf599 BP |
1217 | ofopgroup_submit(group); |
1218 | } | |
1219 | ||
8037acb4 BP |
1220 | /* Deletes 'rule' from 'cls' within 'ofproto'. |
1221 | * | |
b74cb5d8 BP |
1222 | * Within an ofproto implementation, this function allows an ofproto |
1223 | * implementation to destroy any rules that remain when its ->destruct() | |
1224 | * function is called. This function is not suitable for use elsewhere in an | |
1225 | * ofproto implementation. | |
1226 | * | |
b74cb5d8 | 1227 | * This function implements steps 4.4 and 4.5 in the section titled "Rule Life |
8b81d1ef | 1228 | * Cycle" in ofproto-provider.h. */ |
b74cb5d8 | 1229 | void |
8b81d1ef | 1230 | ofproto_rule_delete(struct ofproto *ofproto, struct rule *rule) |
15aaf599 | 1231 | OVS_EXCLUDED(ofproto_mutex) |
7ee20df1 | 1232 | { |
7ee20df1 | 1233 | struct ofopgroup *group; |
8037acb4 | 1234 | |
15aaf599 | 1235 | ovs_mutex_lock(&ofproto_mutex); |
8037acb4 | 1236 | ovs_assert(!rule->pending); |
8037acb4 BP |
1237 | |
1238 | group = ofopgroup_create_unattached(ofproto); | |
1239 | ofoperation_create(group, rule, OFOPERATION_DELETE, OFPRR_DELETE); | |
8b81d1ef | 1240 | oftable_remove_rule__(ofproto, rule); |
8037acb4 BP |
1241 | ofproto->ofproto_class->rule_delete(rule); |
1242 | ofopgroup_submit(group); | |
15aaf599 BP |
1243 | |
1244 | ovs_mutex_unlock(&ofproto_mutex); | |
8037acb4 BP |
1245 | } |
1246 | ||
1247 | static void | |
1248 | ofproto_flush__(struct ofproto *ofproto) | |
15aaf599 | 1249 | OVS_EXCLUDED(ofproto_mutex) |
8037acb4 | 1250 | { |
d0918789 | 1251 | struct oftable *table; |
7ee20df1 BP |
1252 | |
1253 | if (ofproto->ofproto_class->flush) { | |
1254 | ofproto->ofproto_class->flush(ofproto); | |
1255 | } | |
1256 | ||
15aaf599 | 1257 | ovs_mutex_lock(&ofproto_mutex); |
b772ded8 | 1258 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
7ee20df1 BP |
1259 | struct rule *rule, *next_rule; |
1260 | struct cls_cursor cursor; | |
1261 | ||
5c67e4af BP |
1262 | if (table->flags & OFTABLE_HIDDEN) { |
1263 | continue; | |
1264 | } | |
1265 | ||
06f81620 | 1266 | fat_rwlock_rdlock(&table->cls.rwlock); |
d0918789 | 1267 | cls_cursor_init(&cursor, &table->cls, NULL); |
06f81620 | 1268 | fat_rwlock_unlock(&table->cls.rwlock); |
7ee20df1 BP |
1269 | CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) { |
1270 | if (!rule->pending) { | |
ad9ca2fc | 1271 | ofproto_rule_delete__(ofproto, rule, OFPRR_DELETE); |
7ee20df1 BP |
1272 | } |
1273 | } | |
1274 | } | |
15aaf599 | 1275 | ovs_mutex_unlock(&ofproto_mutex); |
7ee20df1 BP |
1276 | } |
1277 | ||
7395c052 NZ |
1278 | static void delete_group(struct ofproto *ofproto, uint32_t group_id); |
1279 | ||
abe529af BP |
1280 | static void |
1281 | ofproto_destroy__(struct ofproto *ofproto) | |
15aaf599 | 1282 | OVS_EXCLUDED(ofproto_mutex) |
abe529af | 1283 | { |
d0918789 | 1284 | struct oftable *table; |
6c1491fb | 1285 | |
cb22974d | 1286 | ovs_assert(list_is_empty(&ofproto->pending)); |
7ee20df1 | 1287 | |
35412852 BP |
1288 | destroy_rule_executes(ofproto); |
1289 | guarded_list_destroy(&ofproto->rule_executes); | |
1290 | ||
7395c052 NZ |
1291 | delete_group(ofproto, OFPG_ALL); |
1292 | ovs_rwlock_destroy(&ofproto->groups_rwlock); | |
1293 | hmap_destroy(&ofproto->groups); | |
1294 | ||
abe529af | 1295 | connmgr_destroy(ofproto->connmgr); |
fa066f01 | 1296 | |
abe529af BP |
1297 | hmap_remove(&all_ofprotos, &ofproto->hmap_node); |
1298 | free(ofproto->name); | |
955a7127 | 1299 | free(ofproto->type); |
abe529af BP |
1300 | free(ofproto->mfr_desc); |
1301 | free(ofproto->hw_desc); | |
1302 | free(ofproto->sw_desc); | |
1303 | free(ofproto->serial_desc); | |
1304 | free(ofproto->dp_desc); | |
abe529af | 1305 | hmap_destroy(&ofproto->ports); |
fdcea803 | 1306 | hmap_destroy(&ofproto->ofport_usage); |
abe529af | 1307 | shash_destroy(&ofproto->port_by_name); |
e1b1d06a | 1308 | simap_destroy(&ofproto->ofp_requests); |
6c1491fb | 1309 | |
b772ded8 | 1310 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
d0918789 | 1311 | oftable_destroy(table); |
6c1491fb BP |
1312 | } |
1313 | free(ofproto->tables); | |
fa066f01 | 1314 | |
7ee20df1 BP |
1315 | hmap_destroy(&ofproto->deletions); |
1316 | ||
52a90c29 BP |
1317 | free(ofproto->vlan_bitmap); |
1318 | ||
abe529af BP |
1319 | ofproto->ofproto_class->dealloc(ofproto); |
1320 | } | |
fa066f01 | 1321 | |
064af421 BP |
1322 | void |
1323 | ofproto_destroy(struct ofproto *p) | |
15aaf599 | 1324 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 1325 | { |
ca0f572c | 1326 | struct ofport *ofport, *next_ofport; |
fdcea803 | 1327 | struct ofport_usage *usage, *next_usage; |
064af421 BP |
1328 | |
1329 | if (!p) { | |
1330 | return; | |
1331 | } | |
1332 | ||
717de9ff JR |
1333 | if (p->meters) { |
1334 | meter_delete(p, 1, p->meter_features.max_meters); | |
1335 | p->meter_features.max_meters = 0; | |
1336 | free(p->meters); | |
1337 | p->meters = NULL; | |
1338 | } | |
1339 | ||
7ee20df1 | 1340 | ofproto_flush__(p); |
4e8e4213 | 1341 | HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) { |
abe529af | 1342 | ofport_destroy(ofport); |
064af421 | 1343 | } |
064af421 | 1344 | |
fdcea803 GS |
1345 | HMAP_FOR_EACH_SAFE (usage, next_usage, hmap_node, &p->ofport_usage) { |
1346 | hmap_remove(&p->ofport_usage, &usage->hmap_node); | |
1347 | free(usage); | |
1348 | } | |
1349 | ||
abe529af BP |
1350 | p->ofproto_class->destruct(p); |
1351 | ofproto_destroy__(p); | |
064af421 BP |
1352 | } |
1353 | ||
abe529af BP |
1354 | /* Destroys the datapath with the respective 'name' and 'type'. With the Linux |
1355 | * kernel datapath, for example, this destroys the datapath in the kernel, and | |
1356 | * with the netdev-based datapath, it tears down the data structures that | |
1357 | * represent the datapath. | |
1358 | * | |
1359 | * The datapath should not be currently open as an ofproto. */ | |
064af421 | 1360 | int |
abe529af | 1361 | ofproto_delete(const char *name, const char *type) |
064af421 | 1362 | { |
abe529af BP |
1363 | const struct ofproto_class *class = ofproto_class_find__(type); |
1364 | return (!class ? EAFNOSUPPORT | |
1365 | : !class->del ? EACCES | |
1366 | : class->del(type, name)); | |
064af421 BP |
1367 | } |
1368 | ||
e9e28be3 BP |
1369 | static void |
1370 | process_port_change(struct ofproto *ofproto, int error, char *devname) | |
1371 | { | |
1372 | if (error == ENOBUFS) { | |
1373 | reinit_ports(ofproto); | |
1374 | } else if (!error) { | |
1375 | update_port(ofproto, devname); | |
1376 | free(devname); | |
1377 | } | |
1378 | } | |
1379 | ||
11a574a7 JP |
1380 | int |
1381 | ofproto_type_run(const char *datapath_type) | |
1382 | { | |
1383 | const struct ofproto_class *class; | |
1384 | int error; | |
1385 | ||
1386 | datapath_type = ofproto_normalize_type(datapath_type); | |
1387 | class = ofproto_class_find__(datapath_type); | |
1388 | ||
1389 | error = class->type_run ? class->type_run(datapath_type) : 0; | |
1390 | if (error && error != EAGAIN) { | |
1391 | VLOG_ERR_RL(&rl, "%s: type_run failed (%s)", | |
10a89ef0 | 1392 | datapath_type, ovs_strerror(error)); |
11a574a7 JP |
1393 | } |
1394 | return error; | |
1395 | } | |
1396 | ||
11a574a7 JP |
1397 | void |
1398 | ofproto_type_wait(const char *datapath_type) | |
1399 | { | |
1400 | const struct ofproto_class *class; | |
1401 | ||
1402 | datapath_type = ofproto_normalize_type(datapath_type); | |
1403 | class = ofproto_class_find__(datapath_type); | |
1404 | ||
1405 | if (class->type_wait) { | |
1406 | class->type_wait(datapath_type); | |
1407 | } | |
1408 | } | |
1409 | ||
06b79a9a BP |
1410 | static bool |
1411 | any_pending_ops(const struct ofproto *p) | |
15aaf599 | 1412 | OVS_EXCLUDED(ofproto_mutex) |
06b79a9a | 1413 | { |
15aaf599 BP |
1414 | bool b; |
1415 | ||
1416 | ovs_mutex_lock(&ofproto_mutex); | |
1417 | b = !list_is_empty(&p->pending); | |
1418 | ovs_mutex_unlock(&ofproto_mutex); | |
1419 | ||
1420 | return b; | |
06b79a9a BP |
1421 | } |
1422 | ||
064af421 | 1423 | int |
abe529af | 1424 | ofproto_run(struct ofproto *p) |
064af421 | 1425 | { |
064af421 | 1426 | int error; |
da4a6191 | 1427 | uint64_t new_seq; |
064af421 | 1428 | |
abe529af | 1429 | error = p->ofproto_class->run(p); |
5fcc0d00 | 1430 | if (error && error != EAGAIN) { |
10a89ef0 | 1431 | VLOG_ERR_RL(&rl, "%s: run failed (%s)", p->name, ovs_strerror(error)); |
149f577a JG |
1432 | } |
1433 | ||
35412852 BP |
1434 | run_rule_executes(p); |
1435 | ||
448c2fa8 EJ |
1436 | /* Restore the eviction group heap invariant occasionally. */ |
1437 | if (p->eviction_group_timer < time_msec()) { | |
1438 | size_t i; | |
1439 | ||
1440 | p->eviction_group_timer = time_msec() + 1000; | |
1441 | ||
1442 | for (i = 0; i < p->n_tables; i++) { | |
1443 | struct oftable *table = &p->tables[i]; | |
1444 | struct eviction_group *evg; | |
1445 | struct cls_cursor cursor; | |
448c2fa8 EJ |
1446 | struct rule *rule; |
1447 | ||
1448 | if (!table->eviction_fields) { | |
1449 | continue; | |
1450 | } | |
1451 | ||
15aaf599 | 1452 | ovs_mutex_lock(&ofproto_mutex); |
448c2fa8 EJ |
1453 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { |
1454 | heap_rebuild(&evg->rules); | |
1455 | } | |
1456 | ||
06f81620 | 1457 | fat_rwlock_rdlock(&table->cls.rwlock); |
c4ea31b1 | 1458 | cls_cursor_init(&cursor, &table->cls, NULL); |
448c2fa8 EJ |
1459 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
1460 | if (!rule->eviction_group | |
1461 | && (rule->idle_timeout || rule->hard_timeout)) { | |
1462 | eviction_group_add_rule(rule); | |
1463 | } | |
1464 | } | |
06f81620 | 1465 | fat_rwlock_unlock(&table->cls.rwlock); |
15aaf599 | 1466 | ovs_mutex_unlock(&ofproto_mutex); |
448c2fa8 EJ |
1467 | } |
1468 | } | |
1469 | ||
5bf0e941 | 1470 | if (p->ofproto_class->port_poll) { |
7436ed80 BP |
1471 | char *devname; |
1472 | ||
5bf0e941 BP |
1473 | while ((error = p->ofproto_class->port_poll(p, &devname)) != EAGAIN) { |
1474 | process_port_change(p, error, devname); | |
064af421 | 1475 | } |
e9e28be3 | 1476 | } |
031d8bff | 1477 | |
da4a6191 JS |
1478 | new_seq = seq_read(connectivity_seq_get()); |
1479 | if (new_seq != p->change_seq) { | |
1480 | struct sset devnames; | |
1481 | const char *devname; | |
1482 | struct ofport *ofport; | |
1483 | ||
1484 | /* Update OpenFlow port status for any port whose netdev has changed. | |
1485 | * | |
1486 | * Refreshing a given 'ofport' can cause an arbitrary ofport to be | |
1487 | * destroyed, so it's not safe to update ports directly from the | |
1488 | * HMAP_FOR_EACH loop, or even to use HMAP_FOR_EACH_SAFE. Instead, we | |
1489 | * need this two-phase approach. */ | |
1490 | sset_init(&devnames); | |
1491 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
1492 | sset_add(&devnames, netdev_get_name(ofport->netdev)); | |
031d8bff | 1493 | } |
da4a6191 JS |
1494 | SSET_FOR_EACH (devname, &devnames) { |
1495 | update_port(p, devname); | |
1496 | } | |
1497 | sset_destroy(&devnames); | |
1498 | ||
1499 | p->change_seq = new_seq; | |
064af421 BP |
1500 | } |
1501 | ||
7ee20df1 BP |
1502 | switch (p->state) { |
1503 | case S_OPENFLOW: | |
1504 | connmgr_run(p->connmgr, handle_openflow); | |
1505 | break; | |
1506 | ||
254750ce BP |
1507 | case S_EVICT: |
1508 | connmgr_run(p->connmgr, NULL); | |
1509 | ofproto_evict(p); | |
06b79a9a | 1510 | if (!any_pending_ops(p)) { |
254750ce BP |
1511 | p->state = S_OPENFLOW; |
1512 | } | |
1513 | break; | |
1514 | ||
7ee20df1 BP |
1515 | case S_FLUSH: |
1516 | connmgr_run(p->connmgr, NULL); | |
1517 | ofproto_flush__(p); | |
06b79a9a | 1518 | if (!any_pending_ops(p)) { |
7ee20df1 BP |
1519 | connmgr_flushed(p->connmgr); |
1520 | p->state = S_OPENFLOW; | |
1521 | } | |
1522 | break; | |
1523 | ||
1524 | default: | |
428b2edd | 1525 | OVS_NOT_REACHED(); |
7ee20df1 | 1526 | } |
064af421 | 1527 | |
a5b8d268 BP |
1528 | if (time_msec() >= p->next_op_report) { |
1529 | long long int ago = (time_msec() - p->first_op) / 1000; | |
1530 | long long int interval = (p->last_op - p->first_op) / 1000; | |
1531 | struct ds s; | |
1532 | ||
1533 | ds_init(&s); | |
1534 | ds_put_format(&s, "%d flow_mods ", | |
1535 | p->n_add + p->n_delete + p->n_modify); | |
1536 | if (interval == ago) { | |
1537 | ds_put_format(&s, "in the last %lld s", ago); | |
1538 | } else if (interval) { | |
1539 | ds_put_format(&s, "in the %lld s starting %lld s ago", | |
1540 | interval, ago); | |
1541 | } else { | |
1542 | ds_put_format(&s, "%lld s ago", ago); | |
1543 | } | |
1544 | ||
1545 | ds_put_cstr(&s, " ("); | |
1546 | if (p->n_add) { | |
1547 | ds_put_format(&s, "%d adds, ", p->n_add); | |
1548 | } | |
1549 | if (p->n_delete) { | |
1550 | ds_put_format(&s, "%d deletes, ", p->n_delete); | |
1551 | } | |
1552 | if (p->n_modify) { | |
1553 | ds_put_format(&s, "%d modifications, ", p->n_modify); | |
1554 | } | |
1555 | s.length -= 2; | |
1556 | ds_put_char(&s, ')'); | |
1557 | ||
fbfa2911 | 1558 | VLOG_INFO("%s: %s", p->name, ds_cstr(&s)); |
a5b8d268 BP |
1559 | ds_destroy(&s); |
1560 | ||
1561 | p->n_add = p->n_delete = p->n_modify = 0; | |
1562 | p->next_op_report = LLONG_MAX; | |
1563 | } | |
1564 | ||
5fcc0d00 BP |
1565 | return error; |
1566 | } | |
1567 | ||
064af421 BP |
1568 | void |
1569 | ofproto_wait(struct ofproto *p) | |
1570 | { | |
abe529af | 1571 | p->ofproto_class->wait(p); |
5bf0e941 BP |
1572 | if (p->ofproto_class->port_poll_wait) { |
1573 | p->ofproto_class->port_poll_wait(p); | |
e7934396 | 1574 | } |
da4a6191 | 1575 | seq_wait(connectivity_seq_get(), p->change_seq); |
7ee20df1 BP |
1576 | |
1577 | switch (p->state) { | |
1578 | case S_OPENFLOW: | |
1579 | connmgr_wait(p->connmgr, true); | |
1580 | break; | |
1581 | ||
254750ce | 1582 | case S_EVICT: |
7ee20df1 BP |
1583 | case S_FLUSH: |
1584 | connmgr_wait(p->connmgr, false); | |
06b79a9a | 1585 | if (!any_pending_ops(p)) { |
7ee20df1 BP |
1586 | poll_immediate_wake(); |
1587 | } | |
1588 | break; | |
1589 | } | |
064af421 BP |
1590 | } |
1591 | ||
064af421 BP |
1592 | bool |
1593 | ofproto_is_alive(const struct ofproto *p) | |
1594 | { | |
19a87e36 | 1595 | return connmgr_has_controllers(p->connmgr); |
064af421 BP |
1596 | } |
1597 | ||
0d085684 BP |
1598 | /* Adds some memory usage statistics for 'ofproto' into 'usage', for use with |
1599 | * memory_report(). */ | |
1600 | void | |
1601 | ofproto_get_memory_usage(const struct ofproto *ofproto, struct simap *usage) | |
1602 | { | |
1603 | const struct oftable *table; | |
1604 | unsigned int n_rules; | |
1605 | ||
1606 | simap_increase(usage, "ports", hmap_count(&ofproto->ports)); | |
15aaf599 BP |
1607 | |
1608 | ovs_mutex_lock(&ofproto_mutex); | |
0d085684 BP |
1609 | simap_increase(usage, "ops", |
1610 | ofproto->n_pending + hmap_count(&ofproto->deletions)); | |
15aaf599 | 1611 | ovs_mutex_unlock(&ofproto_mutex); |
0d085684 BP |
1612 | |
1613 | n_rules = 0; | |
1614 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { | |
06f81620 | 1615 | fat_rwlock_rdlock(&table->cls.rwlock); |
0d085684 | 1616 | n_rules += classifier_count(&table->cls); |
06f81620 | 1617 | fat_rwlock_unlock(&table->cls.rwlock); |
0d085684 BP |
1618 | } |
1619 | simap_increase(usage, "rules", n_rules); | |
1620 | ||
1621 | if (ofproto->ofproto_class->get_memory_usage) { | |
1622 | ofproto->ofproto_class->get_memory_usage(ofproto, usage); | |
1623 | } | |
1624 | ||
1625 | connmgr_get_memory_usage(ofproto->connmgr, usage); | |
1626 | } | |
1627 | ||
1c030aa5 EJ |
1628 | void |
1629 | ofproto_type_get_memory_usage(const char *datapath_type, struct simap *usage) | |
1630 | { | |
1631 | const struct ofproto_class *class; | |
1632 | ||
1633 | datapath_type = ofproto_normalize_type(datapath_type); | |
1634 | class = ofproto_class_find__(datapath_type); | |
1635 | ||
1636 | if (class && class->type_get_memory_usage) { | |
1637 | class->type_get_memory_usage(datapath_type, usage); | |
1638 | } | |
1639 | } | |
1640 | ||
bffc0589 | 1641 | void |
2cdcb898 | 1642 | ofproto_get_ofproto_controller_info(const struct ofproto *ofproto, |
bffc0589 AE |
1643 | struct shash *info) |
1644 | { | |
19a87e36 | 1645 | connmgr_get_controller_info(ofproto->connmgr, info); |
bffc0589 AE |
1646 | } |
1647 | ||
1648 | void | |
1649 | ofproto_free_ofproto_controller_info(struct shash *info) | |
1650 | { | |
72ba2ed3 | 1651 | connmgr_free_controller_info(info); |
bffc0589 AE |
1652 | } |
1653 | ||
b5827b24 BP |
1654 | /* Makes a deep copy of 'old' into 'port'. */ |
1655 | void | |
1656 | ofproto_port_clone(struct ofproto_port *port, const struct ofproto_port *old) | |
1657 | { | |
1658 | port->name = xstrdup(old->name); | |
1659 | port->type = xstrdup(old->type); | |
1660 | port->ofp_port = old->ofp_port; | |
1661 | } | |
1662 | ||
1663 | /* Frees memory allocated to members of 'ofproto_port'. | |
3a6ccc8c | 1664 | * |
b5827b24 BP |
1665 | * Do not call this function on an ofproto_port obtained from |
1666 | * ofproto_port_dump_next(): that function retains ownership of the data in the | |
1667 | * ofproto_port. */ | |
1668 | void | |
1669 | ofproto_port_destroy(struct ofproto_port *ofproto_port) | |
1670 | { | |
1671 | free(ofproto_port->name); | |
1672 | free(ofproto_port->type); | |
1673 | } | |
1674 | ||
b5827b24 | 1675 | /* Initializes 'dump' to begin dumping the ports in an ofproto. |
3a6ccc8c | 1676 | * |
b5827b24 BP |
1677 | * This function provides no status indication. An error status for the entire |
1678 | * dump operation is provided when it is completed by calling | |
1679 | * ofproto_port_dump_done(). | |
1680 | */ | |
1681 | void | |
1682 | ofproto_port_dump_start(struct ofproto_port_dump *dump, | |
1683 | const struct ofproto *ofproto) | |
1684 | { | |
abe529af BP |
1685 | dump->ofproto = ofproto; |
1686 | dump->error = ofproto->ofproto_class->port_dump_start(ofproto, | |
1687 | &dump->state); | |
b5827b24 BP |
1688 | } |
1689 | ||
1690 | /* Attempts to retrieve another port from 'dump', which must have been created | |
1691 | * with ofproto_port_dump_start(). On success, stores a new ofproto_port into | |
1692 | * 'port' and returns true. On failure, returns false. | |
1693 | * | |
1694 | * Failure might indicate an actual error or merely that the last port has been | |
1695 | * dumped. An error status for the entire dump operation is provided when it | |
1696 | * is completed by calling ofproto_port_dump_done(). | |
1697 | * | |
1698 | * The ofproto owns the data stored in 'port'. It will remain valid until at | |
1699 | * least the next time 'dump' is passed to ofproto_port_dump_next() or | |
1700 | * ofproto_port_dump_done(). */ | |
1701 | bool | |
1702 | ofproto_port_dump_next(struct ofproto_port_dump *dump, | |
1703 | struct ofproto_port *port) | |
1704 | { | |
abe529af BP |
1705 | const struct ofproto *ofproto = dump->ofproto; |
1706 | ||
1707 | if (dump->error) { | |
1708 | return false; | |
1709 | } | |
b5827b24 | 1710 | |
abe529af BP |
1711 | dump->error = ofproto->ofproto_class->port_dump_next(ofproto, dump->state, |
1712 | port); | |
1713 | if (dump->error) { | |
1714 | ofproto->ofproto_class->port_dump_done(ofproto, dump->state); | |
1715 | return false; | |
b5827b24 | 1716 | } |
abe529af | 1717 | return true; |
b5827b24 BP |
1718 | } |
1719 | ||
1720 | /* Completes port table dump operation 'dump', which must have been created | |
1721 | * with ofproto_port_dump_start(). Returns 0 if the dump operation was | |
1722 | * error-free, otherwise a positive errno value describing the problem. */ | |
3a6ccc8c | 1723 | int |
b5827b24 | 1724 | ofproto_port_dump_done(struct ofproto_port_dump *dump) |
3a6ccc8c | 1725 | { |
abe529af BP |
1726 | const struct ofproto *ofproto = dump->ofproto; |
1727 | if (!dump->error) { | |
1728 | dump->error = ofproto->ofproto_class->port_dump_done(ofproto, | |
1729 | dump->state); | |
1730 | } | |
1731 | return dump->error == EOF ? 0 : dump->error; | |
b5827b24 BP |
1732 | } |
1733 | ||
0aeaabc8 JP |
1734 | /* Returns the type to pass to netdev_open() when a datapath of type |
1735 | * 'datapath_type' has a port of type 'port_type', for a few special | |
1736 | * cases when a netdev type differs from a port type. For example, when | |
1737 | * using the userspace datapath, a port of type "internal" needs to be | |
1738 | * opened as "tap". | |
1739 | * | |
1740 | * Returns either 'type' itself or a string literal, which must not be | |
1741 | * freed. */ | |
1742 | const char * | |
1743 | ofproto_port_open_type(const char *datapath_type, const char *port_type) | |
1744 | { | |
1745 | const struct ofproto_class *class; | |
1746 | ||
1747 | datapath_type = ofproto_normalize_type(datapath_type); | |
1748 | class = ofproto_class_find__(datapath_type); | |
1749 | if (!class) { | |
1750 | return port_type; | |
1751 | } | |
1752 | ||
1753 | return (class->port_open_type | |
1754 | ? class->port_open_type(datapath_type, port_type) | |
1755 | : port_type); | |
1756 | } | |
1757 | ||
81816a5f JP |
1758 | /* Attempts to add 'netdev' as a port on 'ofproto'. If 'ofp_portp' is |
1759 | * non-null and '*ofp_portp' is not OFPP_NONE, attempts to use that as | |
1760 | * the port's OpenFlow port number. | |
1761 | * | |
1762 | * If successful, returns 0 and sets '*ofp_portp' to the new port's | |
1763 | * OpenFlow port number (if 'ofp_portp' is non-null). On failure, | |
1764 | * returns a positive errno value and sets '*ofp_portp' to OFPP_NONE (if | |
1765 | * 'ofp_portp' is non-null). */ | |
b5827b24 BP |
1766 | int |
1767 | ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev, | |
4e022ec0 | 1768 | ofp_port_t *ofp_portp) |
b5827b24 | 1769 | { |
4e022ec0 | 1770 | ofp_port_t ofp_port = ofp_portp ? *ofp_portp : OFPP_NONE; |
3a6ccc8c BP |
1771 | int error; |
1772 | ||
e1b1d06a | 1773 | error = ofproto->ofproto_class->port_add(ofproto, netdev); |
1fa24dea | 1774 | if (!error) { |
e1b1d06a JP |
1775 | const char *netdev_name = netdev_get_name(netdev); |
1776 | ||
4e022ec0 AW |
1777 | simap_put(&ofproto->ofp_requests, netdev_name, |
1778 | ofp_to_u16(ofp_port)); | |
e1b1d06a | 1779 | update_port(ofproto, netdev_name); |
1fa24dea | 1780 | } |
b5827b24 | 1781 | if (ofp_portp) { |
17f69db5 BP |
1782 | *ofp_portp = OFPP_NONE; |
1783 | if (!error) { | |
1784 | struct ofproto_port ofproto_port; | |
1785 | ||
1786 | error = ofproto_port_query_by_name(ofproto, | |
1787 | netdev_get_name(netdev), | |
1788 | &ofproto_port); | |
1789 | if (!error) { | |
1790 | *ofp_portp = ofproto_port.ofp_port; | |
1791 | ofproto_port_destroy(&ofproto_port); | |
1792 | } | |
1793 | } | |
3a6ccc8c BP |
1794 | } |
1795 | return error; | |
1796 | } | |
1797 | ||
b5827b24 BP |
1798 | /* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and |
1799 | * initializes '*port' appropriately; on failure, returns a positive errno | |
1800 | * value. | |
1801 | * | |
abe529af | 1802 | * The caller owns the data in 'ofproto_port' and must free it with |
b5827b24 BP |
1803 | * ofproto_port_destroy() when it is no longer needed. */ |
1804 | int | |
1805 | ofproto_port_query_by_name(const struct ofproto *ofproto, const char *devname, | |
1806 | struct ofproto_port *port) | |
a4e2e1f2 | 1807 | { |
b5827b24 BP |
1808 | int error; |
1809 | ||
abe529af BP |
1810 | error = ofproto->ofproto_class->port_query_by_name(ofproto, devname, port); |
1811 | if (error) { | |
1812 | memset(port, 0, sizeof *port); | |
b5827b24 BP |
1813 | } |
1814 | return error; | |
a4e2e1f2 EJ |
1815 | } |
1816 | ||
b5827b24 | 1817 | /* Deletes port number 'ofp_port' from the datapath for 'ofproto'. |
3a6ccc8c | 1818 | * Returns 0 if successful, otherwise a positive errno. */ |
064af421 | 1819 | int |
4e022ec0 | 1820 | ofproto_port_del(struct ofproto *ofproto, ofp_port_t ofp_port) |
064af421 | 1821 | { |
abe529af | 1822 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); |
1264ec95 | 1823 | const char *name = ofport ? netdev_get_name(ofport->netdev) : "<unknown>"; |
e1b1d06a | 1824 | struct simap_node *ofp_request_node; |
3cf10406 | 1825 | int error; |
cdee00fd | 1826 | |
e1b1d06a JP |
1827 | ofp_request_node = simap_find(&ofproto->ofp_requests, name); |
1828 | if (ofp_request_node) { | |
1829 | simap_delete(&ofproto->ofp_requests, ofp_request_node); | |
1830 | } | |
1831 | ||
abe529af | 1832 | error = ofproto->ofproto_class->port_del(ofproto, ofp_port); |
892815f5 | 1833 | if (!error && ofport) { |
1264ec95 BP |
1834 | /* 'name' is the netdev's name and update_port() is going to close the |
1835 | * netdev. Just in case update_port() refers to 'name' after it | |
3a6ccc8c BP |
1836 | * destroys 'ofport', make a copy of it around the update_port() |
1837 | * call. */ | |
1838 | char *devname = xstrdup(name); | |
1839 | update_port(ofproto, devname); | |
1840 | free(devname); | |
3cf10406 BP |
1841 | } |
1842 | return error; | |
064af421 BP |
1843 | } |
1844 | ||
276f6518 SH |
1845 | static void |
1846 | flow_mod_init(struct ofputil_flow_mod *fm, | |
1847 | const struct match *match, unsigned int priority, | |
1848 | const struct ofpact *ofpacts, size_t ofpacts_len, | |
1849 | enum ofp_flow_mod_command command) | |
1850 | { | |
1851 | memset(fm, 0, sizeof *fm); | |
1852 | fm->match = *match; | |
1853 | fm->priority = priority; | |
1854 | fm->cookie = 0; | |
1855 | fm->new_cookie = 0; | |
1856 | fm->modify_cookie = false; | |
1857 | fm->table_id = 0; | |
1858 | fm->command = command; | |
1859 | fm->idle_timeout = 0; | |
1860 | fm->hard_timeout = 0; | |
1861 | fm->buffer_id = UINT32_MAX; | |
1862 | fm->out_port = OFPP_ANY; | |
1863 | fm->out_group = OFPG_ANY; | |
1864 | fm->flags = 0; | |
1865 | fm->ofpacts = CONST_CAST(struct ofpact *, ofpacts); | |
1866 | fm->ofpacts_len = ofpacts_len; | |
1867 | } | |
1868 | ||
97f63e57 BP |
1869 | static int |
1870 | simple_flow_mod(struct ofproto *ofproto, | |
1871 | const struct match *match, unsigned int priority, | |
1872 | const struct ofpact *ofpacts, size_t ofpacts_len, | |
1873 | enum ofp_flow_mod_command command) | |
1874 | { | |
1875 | struct ofputil_flow_mod fm; | |
1876 | ||
276f6518 | 1877 | flow_mod_init(&fm, match, priority, ofpacts, ofpacts_len, command); |
15aaf599 | 1878 | |
97f63e57 BP |
1879 | return handle_flow_mod__(ofproto, NULL, &fm, NULL); |
1880 | } | |
1881 | ||
6c1491fb | 1882 | /* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and |
fa8b054f BP |
1883 | * performs the 'n_actions' actions in 'actions'. The new flow will not |
1884 | * timeout. | |
1885 | * | |
1886 | * If cls_rule->priority is in the range of priorities supported by OpenFlow | |
1887 | * (0...65535, inclusive) then the flow will be visible to OpenFlow | |
1888 | * controllers; otherwise, it will be hidden. | |
1889 | * | |
f25d0cf3 | 1890 | * The caller retains ownership of 'cls_rule' and 'ofpacts'. |
6c1491fb BP |
1891 | * |
1892 | * This is a helper function for in-band control and fail-open. */ | |
064af421 | 1893 | void |
81a76618 BP |
1894 | ofproto_add_flow(struct ofproto *ofproto, const struct match *match, |
1895 | unsigned int priority, | |
f25d0cf3 | 1896 | const struct ofpact *ofpacts, size_t ofpacts_len) |
15aaf599 | 1897 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 1898 | { |
7ee20df1 | 1899 | const struct rule *rule; |
6f00e29b | 1900 | bool must_add; |
7ee20df1 | 1901 | |
97f63e57 BP |
1902 | /* First do a cheap check whether the rule we're looking for already exists |
1903 | * with the actions that we want. If it does, then we're done. */ | |
06f81620 | 1904 | fat_rwlock_rdlock(&ofproto->tables[0].cls.rwlock); |
81a76618 BP |
1905 | rule = rule_from_cls_rule(classifier_find_match_exactly( |
1906 | &ofproto->tables[0].cls, match, priority)); | |
6f00e29b | 1907 | if (rule) { |
c7c9a7c8 | 1908 | ovs_mutex_lock(&rule->mutex); |
6f00e29b BP |
1909 | must_add = !ofpacts_equal(rule->actions->ofpacts, |
1910 | rule->actions->ofpacts_len, | |
1911 | ofpacts, ofpacts_len); | |
c7c9a7c8 | 1912 | ovs_mutex_unlock(&rule->mutex); |
6f00e29b BP |
1913 | } else { |
1914 | must_add = true; | |
1915 | } | |
06f81620 | 1916 | fat_rwlock_unlock(&ofproto->tables[0].cls.rwlock); |
97f63e57 BP |
1917 | |
1918 | /* If there's no such rule or the rule doesn't have the actions we want, | |
1919 | * fall back to a executing a full flow mod. We can't optimize this at | |
1920 | * all because we didn't take enough locks above to ensure that the flow | |
1921 | * table didn't already change beneath us. */ | |
6f00e29b | 1922 | if (must_add) { |
97f63e57 BP |
1923 | simple_flow_mod(ofproto, match, priority, ofpacts, ofpacts_len, |
1924 | OFPFC_MODIFY_STRICT); | |
7ee20df1 | 1925 | } |
064af421 BP |
1926 | } |
1927 | ||
75a75043 | 1928 | /* Executes the flow modification specified in 'fm'. Returns 0 on success, an |
90bf1e07 BP |
1929 | * OFPERR_* OpenFlow error code on failure, or OFPROTO_POSTPONE if the |
1930 | * operation cannot be initiated now but may be retried later. | |
75a75043 | 1931 | * |
1b63b91e BP |
1932 | * This is a helper function for in-band control and fail-open and the "learn" |
1933 | * action. */ | |
75a75043 | 1934 | int |
e3b56933 | 1935 | ofproto_flow_mod(struct ofproto *ofproto, struct ofputil_flow_mod *fm) |
15aaf599 | 1936 | OVS_EXCLUDED(ofproto_mutex) |
75a75043 BP |
1937 | { |
1938 | return handle_flow_mod__(ofproto, NULL, fm, NULL); | |
1939 | } | |
1940 | ||
6c1491fb BP |
1941 | /* Searches for a rule with matching criteria exactly equal to 'target' in |
1942 | * ofproto's table 0 and, if it finds one, deletes it. | |
1943 | * | |
1944 | * This is a helper function for in-band control and fail-open. */ | |
7ee20df1 | 1945 | bool |
81a76618 BP |
1946 | ofproto_delete_flow(struct ofproto *ofproto, |
1947 | const struct match *target, unsigned int priority) | |
15aaf599 | 1948 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 1949 | { |
8037acb4 | 1950 | struct classifier *cls = &ofproto->tables[0].cls; |
064af421 BP |
1951 | struct rule *rule; |
1952 | ||
97f63e57 BP |
1953 | /* First do a cheap check whether the rule we're looking for has already |
1954 | * been deleted. If so, then we're done. */ | |
06f81620 | 1955 | fat_rwlock_rdlock(&cls->rwlock); |
8037acb4 BP |
1956 | rule = rule_from_cls_rule(classifier_find_match_exactly(cls, target, |
1957 | priority)); | |
06f81620 | 1958 | fat_rwlock_unlock(&cls->rwlock); |
7ee20df1 | 1959 | if (!rule) { |
7ee20df1 | 1960 | return true; |
bcf84111 | 1961 | } |
5ecc9d81 | 1962 | |
97f63e57 BP |
1963 | /* Fall back to a executing a full flow mod. We can't optimize this at all |
1964 | * because we didn't take enough locks above to ensure that the flow table | |
1965 | * didn't already change beneath us. */ | |
1966 | return simple_flow_mod(ofproto, target, priority, NULL, 0, | |
1967 | OFPFC_DELETE_STRICT) != OFPROTO_POSTPONE; | |
142e1f5c BP |
1968 | } |
1969 | ||
7ee20df1 BP |
1970 | /* Starts the process of deleting all of the flows from all of ofproto's flow |
1971 | * tables and then reintroducing the flows required by in-band control and | |
1972 | * fail-open. The process will complete in a later call to ofproto_run(). */ | |
142e1f5c BP |
1973 | void |
1974 | ofproto_flush_flows(struct ofproto *ofproto) | |
1975 | { | |
7ee20df1 BP |
1976 | COVERAGE_INC(ofproto_flush); |
1977 | ofproto->state = S_FLUSH; | |
064af421 BP |
1978 | } |
1979 | \f | |
1980 | static void | |
1981 | reinit_ports(struct ofproto *p) | |
1982 | { | |
abe529af | 1983 | struct ofproto_port_dump dump; |
b3c01ed3 | 1984 | struct sset devnames; |
064af421 | 1985 | struct ofport *ofport; |
abe529af | 1986 | struct ofproto_port ofproto_port; |
b3c01ed3 | 1987 | const char *devname; |
064af421 | 1988 | |
898bf89d JP |
1989 | COVERAGE_INC(ofproto_reinit_ports); |
1990 | ||
b3c01ed3 | 1991 | sset_init(&devnames); |
4e8e4213 | 1992 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { |
1264ec95 | 1993 | sset_add(&devnames, netdev_get_name(ofport->netdev)); |
064af421 | 1994 | } |
abe529af BP |
1995 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { |
1996 | sset_add(&devnames, ofproto_port.name); | |
064af421 | 1997 | } |
064af421 | 1998 | |
b3c01ed3 BP |
1999 | SSET_FOR_EACH (devname, &devnames) { |
2000 | update_port(p, devname); | |
064af421 | 2001 | } |
b3c01ed3 | 2002 | sset_destroy(&devnames); |
064af421 BP |
2003 | } |
2004 | ||
4e022ec0 | 2005 | static ofp_port_t |
e1b1d06a JP |
2006 | alloc_ofp_port(struct ofproto *ofproto, const char *netdev_name) |
2007 | { | |
4e022ec0 | 2008 | uint16_t port_idx; |
e1b1d06a | 2009 | |
4e022ec0 | 2010 | port_idx = simap_get(&ofproto->ofp_requests, netdev_name); |
430dbb14 | 2011 | port_idx = port_idx ? port_idx : UINT16_MAX; |
4e022ec0 | 2012 | |
430dbb14 | 2013 | if (port_idx >= ofproto->max_ports |
fdcea803 GS |
2014 | || ofport_get_usage(ofproto, u16_to_ofp(port_idx)) == LLONG_MAX) { |
2015 | uint16_t lru_ofport = 0, end_port_no = ofproto->alloc_port_no; | |
2016 | long long int last_used_at, lru = LLONG_MAX; | |
e1b1d06a | 2017 | |
e1b1d06a JP |
2018 | /* Search for a free OpenFlow port number. We try not to |
2019 | * immediately reuse them to prevent problems due to old | |
484c8355 BP |
2020 | * flows. |
2021 | * | |
2022 | * We limit the automatically assigned port numbers to the lower half | |
2023 | * of the port range, to reserve the upper half for assignment by | |
2024 | * controllers. */ | |
6033d9d9 | 2025 | for (;;) { |
484c8355 | 2026 | if (++ofproto->alloc_port_no >= MIN(ofproto->max_ports, 32768)) { |
fdcea803 | 2027 | ofproto->alloc_port_no = 1; |
6033d9d9 | 2028 | } |
fdcea803 GS |
2029 | last_used_at = ofport_get_usage(ofproto, |
2030 | u16_to_ofp(ofproto->alloc_port_no)); | |
2031 | if (!last_used_at) { | |
430dbb14 | 2032 | port_idx = ofproto->alloc_port_no; |
6033d9d9 | 2033 | break; |
865b26a4 GS |
2034 | } else if ( last_used_at < time_msec() - 60*60*1000) { |
2035 | /* If the port with ofport 'ofproto->alloc_port_no' was deleted | |
2036 | * more than an hour ago, consider it usable. */ | |
2037 | ofport_remove_usage(ofproto, | |
2038 | u16_to_ofp(ofproto->alloc_port_no)); | |
2039 | port_idx = ofproto->alloc_port_no; | |
2040 | break; | |
fdcea803 GS |
2041 | } else if (last_used_at < lru) { |
2042 | lru = last_used_at; | |
2043 | lru_ofport = ofproto->alloc_port_no; | |
e1b1d06a | 2044 | } |
fdcea803 | 2045 | |
430dbb14 | 2046 | if (ofproto->alloc_port_no == end_port_no) { |
fdcea803 GS |
2047 | if (lru_ofport) { |
2048 | port_idx = lru_ofport; | |
2049 | break; | |
2050 | } | |
6033d9d9 | 2051 | return OFPP_NONE; |
e1b1d06a JP |
2052 | } |
2053 | } | |
2054 | } | |
fdcea803 | 2055 | ofport_set_usage(ofproto, u16_to_ofp(port_idx), LLONG_MAX); |
4e022ec0 | 2056 | return u16_to_ofp(port_idx); |
e1b1d06a JP |
2057 | } |
2058 | ||
2059 | static void | |
fdcea803 | 2060 | dealloc_ofp_port(struct ofproto *ofproto, ofp_port_t ofp_port) |
e1b1d06a | 2061 | { |
430dbb14 | 2062 | if (ofp_to_u16(ofp_port) < ofproto->max_ports) { |
fdcea803 | 2063 | ofport_set_usage(ofproto, ofp_port, time_msec()); |
40fa9417 | 2064 | } |
e1b1d06a JP |
2065 | } |
2066 | ||
fbfa2911 BP |
2067 | /* Opens and returns a netdev for 'ofproto_port' in 'ofproto', or a null |
2068 | * pointer if the netdev cannot be opened. On success, also fills in | |
2069 | * 'opp'. */ | |
b33951b8 | 2070 | static struct netdev * |
e1b1d06a JP |
2071 | ofport_open(struct ofproto *ofproto, |
2072 | struct ofproto_port *ofproto_port, | |
9e1fd49b | 2073 | struct ofputil_phy_port *pp) |
064af421 BP |
2074 | { |
2075 | enum netdev_flags flags; | |
064af421 | 2076 | struct netdev *netdev; |
064af421 BP |
2077 | int error; |
2078 | ||
18812dff | 2079 | error = netdev_open(ofproto_port->name, ofproto_port->type, &netdev); |
064af421 | 2080 | if (error) { |
fbfa2911 | 2081 | VLOG_WARN_RL(&rl, "%s: ignoring port %s (%"PRIu16") because netdev %s " |
064af421 | 2082 | "cannot be opened (%s)", |
fbfa2911 | 2083 | ofproto->name, |
abe529af | 2084 | ofproto_port->name, ofproto_port->ofp_port, |
10a89ef0 | 2085 | ofproto_port->name, ovs_strerror(error)); |
064af421 BP |
2086 | return NULL; |
2087 | } | |
2088 | ||
e1b1d06a JP |
2089 | if (ofproto_port->ofp_port == OFPP_NONE) { |
2090 | if (!strcmp(ofproto->name, ofproto_port->name)) { | |
2091 | ofproto_port->ofp_port = OFPP_LOCAL; | |
2092 | } else { | |
2093 | ofproto_port->ofp_port = alloc_ofp_port(ofproto, | |
2094 | ofproto_port->name); | |
2095 | } | |
2096 | } | |
9e1fd49b BP |
2097 | pp->port_no = ofproto_port->ofp_port; |
2098 | netdev_get_etheraddr(netdev, pp->hw_addr); | |
2099 | ovs_strlcpy(pp->name, ofproto_port->name, sizeof pp->name); | |
064af421 | 2100 | netdev_get_flags(netdev, &flags); |
9e1fd49b BP |
2101 | pp->config = flags & NETDEV_UP ? 0 : OFPUTIL_PC_PORT_DOWN; |
2102 | pp->state = netdev_get_carrier(netdev) ? 0 : OFPUTIL_PS_LINK_DOWN; | |
2103 | netdev_get_features(netdev, &pp->curr, &pp->advertised, | |
2104 | &pp->supported, &pp->peer); | |
cd65125d BP |
2105 | pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000; |
2106 | pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000; | |
118c4676 | 2107 | |
b33951b8 | 2108 | return netdev; |
064af421 BP |
2109 | } |
2110 | ||
b33951b8 | 2111 | /* Returns true if most fields of 'a' and 'b' are equal. Differences in name, |
9e1fd49b | 2112 | * port number, and 'config' bits other than OFPUTIL_PS_LINK_DOWN are |
b33951b8 BP |
2113 | * disregarded. */ |
2114 | static bool | |
9e1fd49b BP |
2115 | ofport_equal(const struct ofputil_phy_port *a, |
2116 | const struct ofputil_phy_port *b) | |
064af421 | 2117 | { |
9e1fd49b | 2118 | return (eth_addr_equals(a->hw_addr, b->hw_addr) |
064af421 | 2119 | && a->state == b->state |
9e1fd49b | 2120 | && !((a->config ^ b->config) & OFPUTIL_PC_PORT_DOWN) |
064af421 BP |
2121 | && a->curr == b->curr |
2122 | && a->advertised == b->advertised | |
2123 | && a->supported == b->supported | |
9e1fd49b BP |
2124 | && a->peer == b->peer |
2125 | && a->curr_speed == b->curr_speed | |
2126 | && a->max_speed == b->max_speed); | |
064af421 BP |
2127 | } |
2128 | ||
b33951b8 BP |
2129 | /* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'. |
2130 | * The caller must ensure that 'p' does not have a conflicting ofport (that is, | |
2131 | * one with the same name or port number). */ | |
064af421 | 2132 | static void |
b33951b8 | 2133 | ofport_install(struct ofproto *p, |
9e1fd49b | 2134 | struct netdev *netdev, const struct ofputil_phy_port *pp) |
064af421 | 2135 | { |
b33951b8 BP |
2136 | const char *netdev_name = netdev_get_name(netdev); |
2137 | struct ofport *ofport; | |
abe529af | 2138 | int error; |
72b06300 | 2139 | |
b33951b8 | 2140 | /* Create ofport. */ |
abe529af BP |
2141 | ofport = p->ofproto_class->port_alloc(); |
2142 | if (!ofport) { | |
2143 | error = ENOMEM; | |
2144 | goto error; | |
2145 | } | |
0f7d71a5 | 2146 | ofport->ofproto = p; |
b33951b8 | 2147 | ofport->netdev = netdev; |
9e1fd49b BP |
2148 | ofport->pp = *pp; |
2149 | ofport->ofp_port = pp->port_no; | |
65e0be10 | 2150 | ofport->created = time_msec(); |
b33951b8 BP |
2151 | |
2152 | /* Add port to 'p'. */ | |
4e022ec0 | 2153 | hmap_insert(&p->ports, &ofport->hmap_node, |
f9c0c3ec | 2154 | hash_ofp_port(ofport->ofp_port)); |
72b06300 | 2155 | shash_add(&p->port_by_name, netdev_name, ofport); |
abe529af | 2156 | |
ada3428f | 2157 | update_mtu(p, ofport); |
9197df76 | 2158 | |
abe529af BP |
2159 | /* Let the ofproto_class initialize its private data. */ |
2160 | error = p->ofproto_class->port_construct(ofport); | |
2161 | if (error) { | |
2162 | goto error; | |
2163 | } | |
9e1fd49b | 2164 | connmgr_send_port_status(p->connmgr, pp, OFPPR_ADD); |
abe529af BP |
2165 | return; |
2166 | ||
2167 | error: | |
2168 | VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)", | |
10a89ef0 | 2169 | p->name, netdev_name, ovs_strerror(error)); |
abe529af BP |
2170 | if (ofport) { |
2171 | ofport_destroy__(ofport); | |
2172 | } else { | |
2173 | netdev_close(netdev); | |
72b06300 | 2174 | } |
064af421 BP |
2175 | } |
2176 | ||
b33951b8 | 2177 | /* Removes 'ofport' from 'p' and destroys it. */ |
064af421 | 2178 | static void |
0f7d71a5 | 2179 | ofport_remove(struct ofport *ofport) |
064af421 | 2180 | { |
9e1fd49b | 2181 | connmgr_send_port_status(ofport->ofproto->connmgr, &ofport->pp, |
fa066f01 | 2182 | OFPPR_DELETE); |
abe529af | 2183 | ofport_destroy(ofport); |
b33951b8 BP |
2184 | } |
2185 | ||
2186 | /* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and | |
2187 | * destroys it. */ | |
2188 | static void | |
2189 | ofport_remove_with_name(struct ofproto *ofproto, const char *name) | |
2190 | { | |
2191 | struct ofport *port = shash_find_data(&ofproto->port_by_name, name); | |
2192 | if (port) { | |
0f7d71a5 | 2193 | ofport_remove(port); |
b33951b8 BP |
2194 | } |
2195 | } | |
2196 | ||
9e1fd49b | 2197 | /* Updates 'port' with new 'pp' description. |
b33951b8 BP |
2198 | * |
2199 | * Does not handle a name or port number change. The caller must implement | |
2200 | * such a change as a delete followed by an add. */ | |
2201 | static void | |
9e1fd49b | 2202 | ofport_modified(struct ofport *port, struct ofputil_phy_port *pp) |
b33951b8 | 2203 | { |
9e1fd49b BP |
2204 | memcpy(port->pp.hw_addr, pp->hw_addr, ETH_ADDR_LEN); |
2205 | port->pp.config = ((port->pp.config & ~OFPUTIL_PC_PORT_DOWN) | |
2206 | | (pp->config & OFPUTIL_PC_PORT_DOWN)); | |
2207 | port->pp.state = pp->state; | |
2208 | port->pp.curr = pp->curr; | |
2209 | port->pp.advertised = pp->advertised; | |
2210 | port->pp.supported = pp->supported; | |
2211 | port->pp.peer = pp->peer; | |
2212 | port->pp.curr_speed = pp->curr_speed; | |
2213 | port->pp.max_speed = pp->max_speed; | |
b33951b8 | 2214 | |
9e1fd49b | 2215 | connmgr_send_port_status(port->ofproto->connmgr, &port->pp, OFPPR_MODIFY); |
064af421 BP |
2216 | } |
2217 | ||
5a2dfd47 JP |
2218 | /* Update OpenFlow 'state' in 'port' and notify controller. */ |
2219 | void | |
9e1fd49b | 2220 | ofproto_port_set_state(struct ofport *port, enum ofputil_port_state state) |
5a2dfd47 | 2221 | { |
9e1fd49b BP |
2222 | if (port->pp.state != state) { |
2223 | port->pp.state = state; | |
2224 | connmgr_send_port_status(port->ofproto->connmgr, &port->pp, | |
5a2dfd47 JP |
2225 | OFPPR_MODIFY); |
2226 | } | |
2227 | } | |
2228 | ||
abe529af | 2229 | void |
4e022ec0 | 2230 | ofproto_port_unregister(struct ofproto *ofproto, ofp_port_t ofp_port) |
e7934396 | 2231 | { |
abe529af BP |
2232 | struct ofport *port = ofproto_get_port(ofproto, ofp_port); |
2233 | if (port) { | |
52a90c29 BP |
2234 | if (port->ofproto->ofproto_class->set_realdev) { |
2235 | port->ofproto->ofproto_class->set_realdev(port, 0, 0); | |
2236 | } | |
b308140a JP |
2237 | if (port->ofproto->ofproto_class->set_stp_port) { |
2238 | port->ofproto->ofproto_class->set_stp_port(port, NULL); | |
2239 | } | |
abe529af | 2240 | if (port->ofproto->ofproto_class->set_cfm) { |
a5610457 | 2241 | port->ofproto->ofproto_class->set_cfm(port, NULL); |
abe529af BP |
2242 | } |
2243 | if (port->ofproto->ofproto_class->bundle_remove) { | |
2244 | port->ofproto->ofproto_class->bundle_remove(port); | |
e7934396 BP |
2245 | } |
2246 | } | |
2247 | } | |
2248 | ||
2249 | static void | |
abe529af | 2250 | ofport_destroy__(struct ofport *port) |
e7934396 | 2251 | { |
abe529af BP |
2252 | struct ofproto *ofproto = port->ofproto; |
2253 | const char *name = netdev_get_name(port->netdev); | |
fa066f01 | 2254 | |
abe529af BP |
2255 | hmap_remove(&ofproto->ports, &port->hmap_node); |
2256 | shash_delete(&ofproto->port_by_name, | |
2257 | shash_find(&ofproto->port_by_name, name)); | |
fa066f01 | 2258 | |
abe529af BP |
2259 | netdev_close(port->netdev); |
2260 | ofproto->ofproto_class->port_dealloc(port); | |
e7934396 BP |
2261 | } |
2262 | ||
064af421 | 2263 | static void |
abe529af | 2264 | ofport_destroy(struct ofport *port) |
064af421 | 2265 | { |
fa066f01 | 2266 | if (port) { |
e1b1d06a | 2267 | dealloc_ofp_port(port->ofproto, port->ofp_port); |
abe529af BP |
2268 | port->ofproto->ofproto_class->port_destruct(port); |
2269 | ofport_destroy__(port); | |
2270 | } | |
064af421 BP |
2271 | } |
2272 | ||
abe529af | 2273 | struct ofport * |
4e022ec0 | 2274 | ofproto_get_port(const struct ofproto *ofproto, ofp_port_t ofp_port) |
ca0f572c BP |
2275 | { |
2276 | struct ofport *port; | |
2277 | ||
f9c0c3ec | 2278 | HMAP_FOR_EACH_IN_BUCKET (port, hmap_node, hash_ofp_port(ofp_port), |
4e022ec0 | 2279 | &ofproto->ports) { |
abe529af | 2280 | if (port->ofp_port == ofp_port) { |
ca0f572c BP |
2281 | return port; |
2282 | } | |
2283 | } | |
2284 | return NULL; | |
2285 | } | |
2286 | ||
fdcea803 GS |
2287 | static long long int |
2288 | ofport_get_usage(const struct ofproto *ofproto, ofp_port_t ofp_port) | |
2289 | { | |
2290 | struct ofport_usage *usage; | |
2291 | ||
2292 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2293 | &ofproto->ofport_usage) { | |
2294 | if (usage->ofp_port == ofp_port) { | |
2295 | return usage->last_used; | |
2296 | } | |
2297 | } | |
2298 | return 0; | |
2299 | } | |
2300 | ||
2301 | static void | |
2302 | ofport_set_usage(struct ofproto *ofproto, ofp_port_t ofp_port, | |
2303 | long long int last_used) | |
2304 | { | |
2305 | struct ofport_usage *usage; | |
2306 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2307 | &ofproto->ofport_usage) { | |
2308 | if (usage->ofp_port == ofp_port) { | |
2309 | usage->last_used = last_used; | |
2310 | return; | |
2311 | } | |
2312 | } | |
2313 | ovs_assert(last_used == LLONG_MAX); | |
2314 | ||
2315 | usage = xmalloc(sizeof *usage); | |
2316 | usage->ofp_port = ofp_port; | |
2317 | usage->last_used = last_used; | |
2318 | hmap_insert(&ofproto->ofport_usage, &usage->hmap_node, | |
2319 | hash_ofp_port(ofp_port)); | |
2320 | } | |
2321 | ||
865b26a4 GS |
2322 | static void |
2323 | ofport_remove_usage(struct ofproto *ofproto, ofp_port_t ofp_port) | |
2324 | { | |
2325 | struct ofport_usage *usage; | |
2326 | HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port), | |
2327 | &ofproto->ofport_usage) { | |
2328 | if (usage->ofp_port == ofp_port) { | |
2329 | hmap_remove(&ofproto->ofport_usage, &usage->hmap_node); | |
2330 | free(usage); | |
2331 | break; | |
2332 | } | |
2333 | } | |
2334 | } | |
2335 | ||
6527c598 PS |
2336 | int |
2337 | ofproto_port_get_stats(const struct ofport *port, struct netdev_stats *stats) | |
2338 | { | |
2339 | struct ofproto *ofproto = port->ofproto; | |
2340 | int error; | |
2341 | ||
2342 | if (ofproto->ofproto_class->port_get_stats) { | |
2343 | error = ofproto->ofproto_class->port_get_stats(port, stats); | |
2344 | } else { | |
2345 | error = EOPNOTSUPP; | |
2346 | } | |
2347 | ||
2348 | return error; | |
2349 | } | |
2350 | ||
064af421 | 2351 | static void |
b33951b8 | 2352 | update_port(struct ofproto *ofproto, const char *name) |
064af421 | 2353 | { |
abe529af | 2354 | struct ofproto_port ofproto_port; |
9e1fd49b | 2355 | struct ofputil_phy_port pp; |
b33951b8 BP |
2356 | struct netdev *netdev; |
2357 | struct ofport *port; | |
064af421 BP |
2358 | |
2359 | COVERAGE_INC(ofproto_update_port); | |
c874dc6d | 2360 | |
b33951b8 | 2361 | /* Fetch 'name''s location and properties from the datapath. */ |
abe529af | 2362 | netdev = (!ofproto_port_query_by_name(ofproto, name, &ofproto_port) |
fbfa2911 | 2363 | ? ofport_open(ofproto, &ofproto_port, &pp) |
b33951b8 | 2364 | : NULL); |
4e022ec0 | 2365 | |
b33951b8 | 2366 | if (netdev) { |
abe529af | 2367 | port = ofproto_get_port(ofproto, ofproto_port.ofp_port); |
b33951b8 | 2368 | if (port && !strcmp(netdev_get_name(port->netdev), name)) { |
e65942a0 BP |
2369 | struct netdev *old_netdev = port->netdev; |
2370 | ||
b33951b8 | 2371 | /* 'name' hasn't changed location. Any properties changed? */ |
9e1fd49b BP |
2372 | if (!ofport_equal(&port->pp, &pp)) { |
2373 | ofport_modified(port, &pp); | |
abe529af BP |
2374 | } |
2375 | ||
ada3428f | 2376 | update_mtu(ofproto, port); |
9197df76 | 2377 | |
e65942a0 BP |
2378 | /* Install the newly opened netdev in case it has changed. |
2379 | * Don't close the old netdev yet in case port_modified has to | |
2380 | * remove a retained reference to it.*/ | |
abe529af BP |
2381 | port->netdev = netdev; |
2382 | ||
2383 | if (port->ofproto->ofproto_class->port_modified) { | |
2384 | port->ofproto->ofproto_class->port_modified(port); | |
b33951b8 | 2385 | } |
e65942a0 BP |
2386 | |
2387 | netdev_close(old_netdev); | |
b33951b8 BP |
2388 | } else { |
2389 | /* If 'port' is nonnull then its name differs from 'name' and thus | |
2390 | * we should delete it. If we think there's a port named 'name' | |
2391 | * then its port number must be wrong now so delete it too. */ | |
2392 | if (port) { | |
0f7d71a5 | 2393 | ofport_remove(port); |
b33951b8 BP |
2394 | } |
2395 | ofport_remove_with_name(ofproto, name); | |
9e1fd49b | 2396 | ofport_install(ofproto, netdev, &pp); |
c874dc6d | 2397 | } |
b33951b8 BP |
2398 | } else { |
2399 | /* Any port named 'name' is gone now. */ | |
2400 | ofport_remove_with_name(ofproto, name); | |
c874dc6d | 2401 | } |
abe529af | 2402 | ofproto_port_destroy(&ofproto_port); |
064af421 BP |
2403 | } |
2404 | ||
2405 | static int | |
2406 | init_ports(struct ofproto *p) | |
2407 | { | |
abe529af BP |
2408 | struct ofproto_port_dump dump; |
2409 | struct ofproto_port ofproto_port; | |
e1b1d06a | 2410 | struct shash_node *node, *next; |
abe529af BP |
2411 | |
2412 | OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) { | |
e1b1d06a JP |
2413 | const char *name = ofproto_port.name; |
2414 | ||
2415 | if (shash_find(&p->port_by_name, name)) { | |
fbfa2911 | 2416 | VLOG_WARN_RL(&rl, "%s: ignoring duplicate device %s in datapath", |
e1b1d06a | 2417 | p->name, name); |
abe529af | 2418 | } else { |
9e1fd49b | 2419 | struct ofputil_phy_port pp; |
b33951b8 BP |
2420 | struct netdev *netdev; |
2421 | ||
e1b1d06a JP |
2422 | /* Check if an OpenFlow port number had been requested. */ |
2423 | node = shash_find(&init_ofp_ports, name); | |
2424 | if (node) { | |
2425 | const struct iface_hint *iface_hint = node->data; | |
4e022ec0 AW |
2426 | simap_put(&p->ofp_requests, name, |
2427 | ofp_to_u16(iface_hint->ofp_port)); | |
e1b1d06a JP |
2428 | } |
2429 | ||
fbfa2911 | 2430 | netdev = ofport_open(p, &ofproto_port, &pp); |
b33951b8 | 2431 | if (netdev) { |
9e1fd49b | 2432 | ofport_install(p, netdev, &pp); |
430dbb14 | 2433 | if (ofp_to_u16(ofproto_port.ofp_port) < p->max_ports) { |
7c35397c | 2434 | p->alloc_port_no = MAX(p->alloc_port_no, |
430dbb14 | 2435 | ofp_to_u16(ofproto_port.ofp_port)); |
7c35397c | 2436 | } |
064af421 BP |
2437 | } |
2438 | } | |
2439 | } | |
b0ec0f27 | 2440 | |
e1b1d06a | 2441 | SHASH_FOR_EACH_SAFE(node, next, &init_ofp_ports) { |
4f9e08a5 | 2442 | struct iface_hint *iface_hint = node->data; |
e1b1d06a JP |
2443 | |
2444 | if (!strcmp(iface_hint->br_name, p->name)) { | |
2445 | free(iface_hint->br_name); | |
2446 | free(iface_hint->br_type); | |
4f9e08a5 | 2447 | free(iface_hint); |
e1b1d06a JP |
2448 | shash_delete(&init_ofp_ports, node); |
2449 | } | |
2450 | } | |
2451 | ||
064af421 BP |
2452 | return 0; |
2453 | } | |
9197df76 JP |
2454 | |
2455 | /* Find the minimum MTU of all non-datapath devices attached to 'p'. | |
2456 | * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */ | |
2457 | static int | |
2458 | find_min_mtu(struct ofproto *p) | |
2459 | { | |
2460 | struct ofport *ofport; | |
2461 | int mtu = 0; | |
2462 | ||
2463 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2464 | struct netdev *netdev = ofport->netdev; | |
2465 | int dev_mtu; | |
2466 | ||
2467 | /* Skip any internal ports, since that's what we're trying to | |
2468 | * set. */ | |
2469 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
2470 | continue; | |
2471 | } | |
2472 | ||
2473 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2474 | continue; | |
2475 | } | |
2476 | if (!mtu || dev_mtu < mtu) { | |
2477 | mtu = dev_mtu; | |
2478 | } | |
2479 | } | |
2480 | ||
2481 | return mtu ? mtu: ETH_PAYLOAD_MAX; | |
2482 | } | |
2483 | ||
ada3428f PS |
2484 | /* Update MTU of all datapath devices on 'p' to the minimum of the |
2485 | * non-datapath ports in event of 'port' added or changed. */ | |
9197df76 | 2486 | static void |
ada3428f | 2487 | update_mtu(struct ofproto *p, struct ofport *port) |
9197df76 JP |
2488 | { |
2489 | struct ofport *ofport; | |
ada3428f PS |
2490 | struct netdev *netdev = port->netdev; |
2491 | int dev_mtu, old_min; | |
2492 | ||
2493 | if (netdev_get_mtu(netdev, &dev_mtu)) { | |
2494 | port->mtu = 0; | |
2495 | return; | |
2496 | } | |
2497 | if (!strcmp(netdev_get_type(port->netdev), "internal")) { | |
2498 | if (dev_mtu > p->min_mtu) { | |
2499 | if (!netdev_set_mtu(port->netdev, p->min_mtu)) { | |
2500 | dev_mtu = p->min_mtu; | |
2501 | } | |
2502 | } | |
2503 | port->mtu = dev_mtu; | |
2504 | return; | |
2505 | } | |
2506 | ||
2507 | /* For non-internal port find new min mtu. */ | |
2508 | old_min = p->min_mtu; | |
2509 | port->mtu = dev_mtu; | |
2510 | p->min_mtu = find_min_mtu(p); | |
2511 | if (p->min_mtu == old_min) { | |
2512 | return; | |
2513 | } | |
9197df76 JP |
2514 | |
2515 | HMAP_FOR_EACH (ofport, hmap_node, &p->ports) { | |
2516 | struct netdev *netdev = ofport->netdev; | |
2517 | ||
2518 | if (!strcmp(netdev_get_type(netdev), "internal")) { | |
ada3428f PS |
2519 | if (!netdev_set_mtu(netdev, p->min_mtu)) { |
2520 | ofport->mtu = p->min_mtu; | |
2521 | } | |
9197df76 JP |
2522 | } |
2523 | } | |
2524 | } | |
064af421 | 2525 | \f |
a2143702 BP |
2526 | void |
2527 | ofproto_rule_ref(struct rule *rule) | |
064af421 | 2528 | { |
1eae3d33 | 2529 | if (rule) { |
37bec3d3 | 2530 | ovs_refcount_ref(&rule->ref_count); |
a2143702 BP |
2531 | } |
2532 | } | |
2533 | ||
2534 | void | |
2535 | ofproto_rule_unref(struct rule *rule) | |
2536 | { | |
37bec3d3 BP |
2537 | if (rule && ovs_refcount_unref(&rule->ref_count) == 1) { |
2538 | rule->ofproto->ofproto_class->rule_destruct(rule); | |
2539 | ofproto_rule_destroy__(rule); | |
1eae3d33 | 2540 | } |
064af421 BP |
2541 | } |
2542 | ||
15aaf599 BP |
2543 | struct rule_actions * |
2544 | rule_get_actions(const struct rule *rule) | |
2545 | OVS_EXCLUDED(rule->mutex) | |
2546 | { | |
2547 | struct rule_actions *actions; | |
2548 | ||
2549 | ovs_mutex_lock(&rule->mutex); | |
2550 | actions = rule_get_actions__(rule); | |
2551 | ovs_mutex_unlock(&rule->mutex); | |
2552 | ||
2553 | return actions; | |
2554 | } | |
2555 | ||
2556 | struct rule_actions * | |
2557 | rule_get_actions__(const struct rule *rule) | |
2558 | OVS_REQUIRES(rule->mutex) | |
2559 | { | |
2560 | rule_actions_ref(rule->actions); | |
2561 | return rule->actions; | |
2562 | } | |
2563 | ||
392caac0 BP |
2564 | static void |
2565 | ofproto_rule_destroy__(struct rule *rule) | |
15aaf599 | 2566 | OVS_NO_THREAD_SAFETY_ANALYSIS |
392caac0 | 2567 | { |
49a0e0eb | 2568 | cls_rule_destroy(CONST_CAST(struct cls_rule *, &rule->cr)); |
6f00e29b | 2569 | rule_actions_unref(rule->actions); |
c7c9a7c8 | 2570 | ovs_mutex_destroy(&rule->mutex); |
37bec3d3 | 2571 | ovs_refcount_destroy(&rule->ref_count); |
392caac0 BP |
2572 | rule->ofproto->ofproto_class->rule_dealloc(rule); |
2573 | } | |
2574 | ||
65efd2ab JR |
2575 | static uint32_t get_provider_meter_id(const struct ofproto *, |
2576 | uint32_t of_meter_id); | |
2577 | ||
6f00e29b BP |
2578 | /* Creates and returns a new 'struct rule_actions', with a ref_count of 1, |
2579 | * whose actions are a copy of from the 'ofpacts_len' bytes of 'ofpacts'. */ | |
2580 | struct rule_actions * | |
65efd2ab JR |
2581 | rule_actions_create(const struct ofproto *ofproto, |
2582 | const struct ofpact *ofpacts, size_t ofpacts_len) | |
6f00e29b BP |
2583 | { |
2584 | struct rule_actions *actions; | |
2585 | ||
2586 | actions = xmalloc(sizeof *actions); | |
37bec3d3 | 2587 | ovs_refcount_init(&actions->ref_count); |
6f00e29b BP |
2588 | actions->ofpacts = xmemdup(ofpacts, ofpacts_len); |
2589 | actions->ofpacts_len = ofpacts_len; | |
65efd2ab JR |
2590 | actions->provider_meter_id |
2591 | = get_provider_meter_id(ofproto, | |
2592 | ofpacts_get_meter(ofpacts, ofpacts_len)); | |
2593 | ||
6f00e29b BP |
2594 | return actions; |
2595 | } | |
2596 | ||
2597 | /* Increments 'actions''s ref_count. */ | |
2598 | void | |
2599 | rule_actions_ref(struct rule_actions *actions) | |
2600 | { | |
2601 | if (actions) { | |
37bec3d3 | 2602 | ovs_refcount_ref(&actions->ref_count); |
6f00e29b BP |
2603 | } |
2604 | } | |
2605 | ||
2606 | /* Decrements 'actions''s ref_count and frees 'actions' if the ref_count | |
2607 | * reaches 0. */ | |
2608 | void | |
2609 | rule_actions_unref(struct rule_actions *actions) | |
2610 | { | |
37bec3d3 BP |
2611 | if (actions && ovs_refcount_unref(&actions->ref_count) == 1) { |
2612 | ovs_refcount_destroy(&actions->ref_count); | |
2613 | free(actions->ofpacts); | |
2614 | free(actions); | |
6f00e29b BP |
2615 | } |
2616 | } | |
2617 | ||
bcf84111 | 2618 | /* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action |
f25d0cf3 | 2619 | * that outputs to 'port' (output to OFPP_FLOOD and OFPP_ALL doesn't count). */ |
74e79b7c | 2620 | static bool |
4e022ec0 | 2621 | ofproto_rule_has_out_port(const struct rule *rule, ofp_port_t port) |
15aaf599 | 2622 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 2623 | { |
7f05e7ab | 2624 | return (port == OFPP_ANY |
6f00e29b BP |
2625 | || ofpacts_output_to_port(rule->actions->ofpacts, |
2626 | rule->actions->ofpacts_len, port)); | |
064af421 BP |
2627 | } |
2628 | ||
7395c052 | 2629 | /* Returns true if 'rule' has group and equals group_id. */ |
74e79b7c | 2630 | static bool |
7395c052 | 2631 | ofproto_rule_has_out_group(const struct rule *rule, uint32_t group_id) |
15aaf599 | 2632 | OVS_REQUIRES(ofproto_mutex) |
7395c052 NZ |
2633 | { |
2634 | return (group_id == OFPG11_ANY | |
6f00e29b BP |
2635 | || ofpacts_output_to_group(rule->actions->ofpacts, |
2636 | rule->actions->ofpacts_len, group_id)); | |
7395c052 NZ |
2637 | } |
2638 | ||
2b07c8b1 BP |
2639 | /* Returns true if a rule related to 'op' has an OpenFlow OFPAT_OUTPUT or |
2640 | * OFPAT_ENQUEUE action that outputs to 'out_port'. */ | |
2641 | bool | |
4e022ec0 | 2642 | ofoperation_has_out_port(const struct ofoperation *op, ofp_port_t out_port) |
15aaf599 | 2643 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
2644 | { |
2645 | if (ofproto_rule_has_out_port(op->rule, out_port)) { | |
2646 | return true; | |
2647 | } | |
2648 | ||
2649 | switch (op->type) { | |
2650 | case OFOPERATION_ADD: | |
2b07c8b1 BP |
2651 | case OFOPERATION_DELETE: |
2652 | return false; | |
2653 | ||
2654 | case OFOPERATION_MODIFY: | |
b277c7cc | 2655 | case OFOPERATION_REPLACE: |
6f00e29b BP |
2656 | return ofpacts_output_to_port(op->actions->ofpacts, |
2657 | op->actions->ofpacts_len, out_port); | |
2b07c8b1 BP |
2658 | } |
2659 | ||
428b2edd | 2660 | OVS_NOT_REACHED(); |
2b07c8b1 BP |
2661 | } |
2662 | ||
35412852 BP |
2663 | static void |
2664 | rule_execute_destroy(struct rule_execute *e) | |
eedc0097 | 2665 | { |
35412852 BP |
2666 | ofproto_rule_unref(e->rule); |
2667 | list_remove(&e->list_node); | |
2668 | free(e); | |
2669 | } | |
eedc0097 | 2670 | |
35412852 BP |
2671 | /* Executes all "rule_execute" operations queued up in ofproto->rule_executes, |
2672 | * by passing them to the ofproto provider. */ | |
2673 | static void | |
2674 | run_rule_executes(struct ofproto *ofproto) | |
15aaf599 | 2675 | OVS_EXCLUDED(ofproto_mutex) |
35412852 BP |
2676 | { |
2677 | struct rule_execute *e, *next; | |
2678 | struct list executes; | |
2679 | ||
2680 | guarded_list_pop_all(&ofproto->rule_executes, &executes); | |
2681 | LIST_FOR_EACH_SAFE (e, next, list_node, &executes) { | |
2682 | union flow_in_port in_port_; | |
2683 | struct flow flow; | |
2684 | ||
2685 | in_port_.ofp_port = e->in_port; | |
2686 | flow_extract(e->packet, 0, 0, NULL, &in_port_, &flow); | |
2687 | ofproto->ofproto_class->rule_execute(e->rule, &flow, e->packet); | |
2688 | ||
2689 | rule_execute_destroy(e); | |
2690 | } | |
2691 | } | |
2692 | ||
2693 | /* Destroys and discards all "rule_execute" operations queued up in | |
2694 | * ofproto->rule_executes. */ | |
2695 | static void | |
2696 | destroy_rule_executes(struct ofproto *ofproto) | |
2697 | { | |
2698 | struct rule_execute *e, *next; | |
2699 | struct list executes; | |
2700 | ||
2701 | guarded_list_pop_all(&ofproto->rule_executes, &executes); | |
2702 | LIST_FOR_EACH_SAFE (e, next, list_node, &executes) { | |
2703 | ofpbuf_delete(e->packet); | |
2704 | rule_execute_destroy(e); | |
2705 | } | |
350a665f BP |
2706 | } |
2707 | ||
abe529af BP |
2708 | /* Returns true if 'rule' should be hidden from the controller. |
2709 | * | |
2710 | * Rules with priority higher than UINT16_MAX are set up by ofproto itself | |
2711 | * (e.g. by in-band control) and are intentionally hidden from the | |
2712 | * controller. */ | |
74e79b7c | 2713 | static bool |
2b07c8b1 | 2714 | ofproto_rule_is_hidden(const struct rule *rule) |
b6c9e612 | 2715 | { |
abe529af | 2716 | return rule->cr.priority > UINT16_MAX; |
7b064a79 | 2717 | } |
5c67e4af BP |
2718 | |
2719 | static enum oftable_flags | |
2720 | rule_get_flags(const struct rule *rule) | |
2721 | { | |
2722 | return rule->ofproto->tables[rule->table_id].flags; | |
2723 | } | |
2724 | ||
2725 | static bool | |
2726 | rule_is_modifiable(const struct rule *rule) | |
2727 | { | |
2728 | return !(rule_get_flags(rule) & OFTABLE_READONLY); | |
2729 | } | |
fa066f01 | 2730 | \f |
90bf1e07 | 2731 | static enum ofperr |
d1e2cf21 | 2732 | handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2733 | { |
b0421aa2 | 2734 | ofconn_send_reply(ofconn, make_echo_reply(oh)); |
064af421 | 2735 | return 0; |
064af421 BP |
2736 | } |
2737 | ||
90bf1e07 | 2738 | static enum ofperr |
d1e2cf21 | 2739 | handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2740 | { |
64ff1d96 | 2741 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
9e1fd49b | 2742 | struct ofputil_switch_features features; |
064af421 | 2743 | struct ofport *port; |
6c1491fb | 2744 | bool arp_match_ip; |
9e1fd49b | 2745 | struct ofpbuf *b; |
c2f0373a BP |
2746 | int n_tables; |
2747 | int i; | |
064af421 | 2748 | |
9e1fd49b BP |
2749 | ofproto->ofproto_class->get_features(ofproto, &arp_match_ip, |
2750 | &features.actions); | |
cb22974d | 2751 | ovs_assert(features.actions & OFPUTIL_A_OUTPUT); /* sanity check */ |
064af421 | 2752 | |
c2f0373a BP |
2753 | /* Count only non-hidden tables in the number of tables. (Hidden tables, |
2754 | * if present, are always at the end.) */ | |
2755 | n_tables = ofproto->n_tables; | |
2756 | for (i = 0; i < ofproto->n_tables; i++) { | |
2757 | if (ofproto->tables[i].flags & OFTABLE_HIDDEN) { | |
2758 | n_tables = i; | |
2759 | break; | |
2760 | } | |
2761 | } | |
2762 | ||
9e1fd49b BP |
2763 | features.datapath_id = ofproto->datapath_id; |
2764 | features.n_buffers = pktbuf_capacity(); | |
c2f0373a | 2765 | features.n_tables = n_tables; |
9e1fd49b BP |
2766 | features.capabilities = (OFPUTIL_C_FLOW_STATS | OFPUTIL_C_TABLE_STATS | |
2767 | OFPUTIL_C_PORT_STATS | OFPUTIL_C_QUEUE_STATS); | |
6c1491fb | 2768 | if (arp_match_ip) { |
9e1fd49b | 2769 | features.capabilities |= OFPUTIL_C_ARP_MATCH_IP; |
6c1491fb | 2770 | } |
2e1ae200 JR |
2771 | /* FIXME: Fill in proper features.auxiliary_id for auxiliary connections */ |
2772 | features.auxiliary_id = 0; | |
9e1fd49b BP |
2773 | b = ofputil_encode_switch_features(&features, ofconn_get_protocol(ofconn), |
2774 | oh->xid); | |
64ff1d96 | 2775 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
9e1fd49b | 2776 | ofputil_put_switch_features_port(&port->pp, b); |
064af421 | 2777 | } |
064af421 | 2778 | |
9e1fd49b | 2779 | ofconn_send_reply(ofconn, b); |
064af421 BP |
2780 | return 0; |
2781 | } | |
064af421 | 2782 | |
90bf1e07 | 2783 | static enum ofperr |
d1e2cf21 | 2784 | handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2785 | { |
64ff1d96 | 2786 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
064af421 | 2787 | struct ofp_switch_config *osc; |
f0fd1a17 | 2788 | enum ofp_config_flags flags; |
7257b535 | 2789 | struct ofpbuf *buf; |
959a2ecd | 2790 | |
064af421 | 2791 | /* Send reply. */ |
982697a4 BP |
2792 | buf = ofpraw_alloc_reply(OFPRAW_OFPT_GET_CONFIG_REPLY, oh, 0); |
2793 | osc = ofpbuf_put_uninit(buf, sizeof *osc); | |
f0fd1a17 | 2794 | flags = ofproto->frag_handling; |
2e1ae200 JR |
2795 | /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */ |
2796 | if (oh->version < OFP13_VERSION | |
2797 | && ofconn_get_invalid_ttl_to_controller(ofconn)) { | |
f0fd1a17 PS |
2798 | flags |= OFPC_INVALID_TTL_TO_CONTROLLER; |
2799 | } | |
2800 | osc->flags = htons(flags); | |
810605a2 | 2801 | osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn)); |
b0421aa2 | 2802 | ofconn_send_reply(ofconn, buf); |
2d70a31a | 2803 | |
064af421 BP |
2804 | return 0; |
2805 | } | |
064af421 | 2806 | |
90bf1e07 | 2807 | static enum ofperr |
982697a4 | 2808 | handle_set_config(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2809 | { |
982697a4 | 2810 | const struct ofp_switch_config *osc = ofpmsg_body(oh); |
64ff1d96 | 2811 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
d1e2cf21 | 2812 | uint16_t flags = ntohs(osc->flags); |
2d70a31a | 2813 | |
7257b535 | 2814 | if (ofconn_get_type(ofconn) != OFCONN_PRIMARY |
f4f1ea7e | 2815 | || ofconn_get_role(ofconn) != OFPCR12_ROLE_SLAVE) { |
7257b535 BP |
2816 | enum ofp_config_flags cur = ofproto->frag_handling; |
2817 | enum ofp_config_flags next = flags & OFPC_FRAG_MASK; | |
2818 | ||
cb22974d | 2819 | ovs_assert((cur & OFPC_FRAG_MASK) == cur); |
7257b535 BP |
2820 | if (cur != next) { |
2821 | if (ofproto->ofproto_class->set_frag_handling(ofproto, next)) { | |
2822 | ofproto->frag_handling = next; | |
2823 | } else { | |
2824 | VLOG_WARN_RL(&rl, "%s: unsupported fragment handling mode %s", | |
2825 | ofproto->name, | |
2826 | ofputil_frag_handling_to_string(next)); | |
2827 | } | |
064af421 BP |
2828 | } |
2829 | } | |
2e1ae200 | 2830 | /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */ |
f0fd1a17 | 2831 | ofconn_set_invalid_ttl_to_controller(ofconn, |
2e1ae200 JR |
2832 | (oh->version < OFP13_VERSION |
2833 | && flags & OFPC_INVALID_TTL_TO_CONTROLLER)); | |
ebe482fd | 2834 | |
810605a2 | 2835 | ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len)); |
0ad9b732 | 2836 | |
064af421 | 2837 | return 0; |
064af421 BP |
2838 | } |
2839 | ||
9deba63b | 2840 | /* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow |
90bf1e07 BP |
2841 | * error message code for the caller to propagate upward. Otherwise, returns |
2842 | * 0. | |
2843 | * | |
2844 | * The log message mentions 'msg_type'. */ | |
2845 | static enum ofperr | |
2846 | reject_slave_controller(struct ofconn *ofconn) | |
9deba63b | 2847 | { |
1ce0a5fa | 2848 | if (ofconn_get_type(ofconn) == OFCONN_PRIMARY |
f4f1ea7e | 2849 | && ofconn_get_role(ofconn) == OFPCR12_ROLE_SLAVE) { |
90bf1e07 | 2850 | return OFPERR_OFPBRC_EPERM; |
9deba63b BP |
2851 | } else { |
2852 | return 0; | |
2853 | } | |
2854 | } | |
2855 | ||
7e9f8266 BP |
2856 | /* Checks that the 'ofpacts_len' bytes of action in 'ofpacts' are appropriate |
2857 | * for 'ofproto': | |
2858 | * | |
2859 | * - If they use a meter, then 'ofproto' has that meter configured. | |
2860 | * | |
2861 | * - If they use any groups, then 'ofproto' has that group configured. | |
2862 | * | |
2863 | * Returns 0 if successful, otherwise an OpenFlow error. */ | |
9cae45dc JR |
2864 | static enum ofperr |
2865 | ofproto_check_ofpacts(struct ofproto *ofproto, | |
7e9f8266 | 2866 | const struct ofpact ofpacts[], size_t ofpacts_len) |
9cae45dc | 2867 | { |
84d68566 | 2868 | const struct ofpact *a; |
9cae45dc JR |
2869 | uint32_t mid; |
2870 | ||
7e9f8266 BP |
2871 | mid = ofpacts_get_meter(ofpacts, ofpacts_len); |
2872 | if (mid && get_provider_meter_id(ofproto, mid) == UINT32_MAX) { | |
2873 | return OFPERR_OFPMMFC_INVALID_METER; | |
9cae45dc JR |
2874 | } |
2875 | ||
84d68566 | 2876 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
7e9f8266 BP |
2877 | if (a->type == OFPACT_GROUP |
2878 | && !ofproto_group_exists(ofproto, ofpact_get_GROUP(a)->group_id)) { | |
2879 | return OFPERR_OFPBAC_BAD_OUT_GROUP; | |
84d68566 SH |
2880 | } |
2881 | } | |
2882 | ||
9cae45dc JR |
2883 | return 0; |
2884 | } | |
2885 | ||
90bf1e07 | 2886 | static enum ofperr |
982697a4 | 2887 | handle_packet_out(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2888 | { |
64ff1d96 | 2889 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
c6a93eb7 BP |
2890 | struct ofputil_packet_out po; |
2891 | struct ofpbuf *payload; | |
f25d0cf3 BP |
2892 | uint64_t ofpacts_stub[1024 / 8]; |
2893 | struct ofpbuf ofpacts; | |
ae412e7d | 2894 | struct flow flow; |
4e022ec0 | 2895 | union flow_in_port in_port_; |
90bf1e07 | 2896 | enum ofperr error; |
064af421 | 2897 | |
ac51afaf BP |
2898 | COVERAGE_INC(ofproto_packet_out); |
2899 | ||
76589937 | 2900 | error = reject_slave_controller(ofconn); |
9deba63b | 2901 | if (error) { |
f25d0cf3 | 2902 | goto exit; |
9deba63b BP |
2903 | } |
2904 | ||
c6a93eb7 | 2905 | /* Decode message. */ |
f25d0cf3 | 2906 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
982697a4 | 2907 | error = ofputil_decode_packet_out(&po, oh, &ofpacts); |
064af421 | 2908 | if (error) { |
f25d0cf3 | 2909 | goto exit_free_ofpacts; |
064af421 | 2910 | } |
430dbb14 | 2911 | if (ofp_to_u16(po.in_port) >= p->max_ports |
4e022ec0 | 2912 | && ofp_to_u16(po.in_port) < ofp_to_u16(OFPP_MAX)) { |
2e1bfcb6 | 2913 | error = OFPERR_OFPBRC_BAD_PORT; |
91858960 BP |
2914 | goto exit_free_ofpacts; |
2915 | } | |
064af421 | 2916 | |
ac51afaf | 2917 | /* Get payload. */ |
c6a93eb7 BP |
2918 | if (po.buffer_id != UINT32_MAX) { |
2919 | error = ofconn_pktbuf_retrieve(ofconn, po.buffer_id, &payload, NULL); | |
2920 | if (error || !payload) { | |
f25d0cf3 | 2921 | goto exit_free_ofpacts; |
064af421 | 2922 | } |
064af421 | 2923 | } else { |
bb622f82 BP |
2924 | /* Ensure that the L3 header is 32-bit aligned. */ |
2925 | payload = ofpbuf_clone_data_with_headroom(po.packet, po.packet_len, 2); | |
e1154f71 BP |
2926 | } |
2927 | ||
548de4dd | 2928 | /* Verify actions against packet, then send packet if successful. */ |
4e022ec0 AW |
2929 | in_port_.ofp_port = po.in_port; |
2930 | flow_extract(payload, 0, 0, NULL, &in_port_, &flow); | |
7e9f8266 | 2931 | error = ofproto_check_ofpacts(p, po.ofpacts, po.ofpacts_len); |
548de4dd BP |
2932 | if (!error) { |
2933 | error = p->ofproto_class->packet_out(p, payload, &flow, | |
2934 | po.ofpacts, po.ofpacts_len); | |
2935 | } | |
c6a93eb7 | 2936 | ofpbuf_delete(payload); |
abe529af | 2937 | |
f25d0cf3 BP |
2938 | exit_free_ofpacts: |
2939 | ofpbuf_uninit(&ofpacts); | |
2940 | exit: | |
abe529af | 2941 | return error; |
064af421 BP |
2942 | } |
2943 | ||
2944 | static void | |
9e1fd49b BP |
2945 | update_port_config(struct ofport *port, |
2946 | enum ofputil_port_config config, | |
2947 | enum ofputil_port_config mask) | |
064af421 | 2948 | { |
9e1fd49b BP |
2949 | enum ofputil_port_config old_config = port->pp.config; |
2950 | enum ofputil_port_config toggle; | |
abe529af | 2951 | |
9e1fd49b BP |
2952 | toggle = (config ^ port->pp.config) & mask; |
2953 | if (toggle & OFPUTIL_PC_PORT_DOWN) { | |
2954 | if (config & OFPUTIL_PC_PORT_DOWN) { | |
4b609110 | 2955 | netdev_turn_flags_off(port->netdev, NETDEV_UP, NULL); |
064af421 | 2956 | } else { |
4b609110 | 2957 | netdev_turn_flags_on(port->netdev, NETDEV_UP, NULL); |
064af421 | 2958 | } |
9e1fd49b | 2959 | toggle &= ~OFPUTIL_PC_PORT_DOWN; |
064af421 | 2960 | } |
abe529af | 2961 | |
9e1fd49b BP |
2962 | port->pp.config ^= toggle; |
2963 | if (port->pp.config != old_config) { | |
abe529af | 2964 | port->ofproto->ofproto_class->port_reconfigured(port, old_config); |
064af421 BP |
2965 | } |
2966 | } | |
2967 | ||
90bf1e07 | 2968 | static enum ofperr |
d1e2cf21 | 2969 | handle_port_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
064af421 | 2970 | { |
64ff1d96 | 2971 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
9e1fd49b | 2972 | struct ofputil_port_mod pm; |
064af421 | 2973 | struct ofport *port; |
9e1fd49b | 2974 | enum ofperr error; |
064af421 | 2975 | |
76589937 | 2976 | error = reject_slave_controller(ofconn); |
9deba63b BP |
2977 | if (error) { |
2978 | return error; | |
2979 | } | |
064af421 | 2980 | |
9e1fd49b BP |
2981 | error = ofputil_decode_port_mod(oh, &pm); |
2982 | if (error) { | |
2983 | return error; | |
2984 | } | |
2985 | ||
2986 | port = ofproto_get_port(p, pm.port_no); | |
064af421 | 2987 | if (!port) { |
90bf1e07 | 2988 | return OFPERR_OFPPMFC_BAD_PORT; |
9e1fd49b | 2989 | } else if (!eth_addr_equals(port->pp.hw_addr, pm.hw_addr)) { |
90bf1e07 | 2990 | return OFPERR_OFPPMFC_BAD_HW_ADDR; |
064af421 | 2991 | } else { |
9e1fd49b BP |
2992 | update_port_config(port, pm.config, pm.mask); |
2993 | if (pm.advertise) { | |
2994 | netdev_set_advertisements(port->netdev, pm.advertise); | |
064af421 BP |
2995 | } |
2996 | } | |
2997 | return 0; | |
2998 | } | |
2999 | ||
90bf1e07 | 3000 | static enum ofperr |
3269c562 | 3001 | handle_desc_stats_request(struct ofconn *ofconn, |
982697a4 | 3002 | const struct ofp_header *request) |
064af421 | 3003 | { |
061bfea4 BP |
3004 | static const char *default_mfr_desc = "Nicira, Inc."; |
3005 | static const char *default_hw_desc = "Open vSwitch"; | |
3006 | static const char *default_sw_desc = VERSION; | |
3007 | static const char *default_serial_desc = "None"; | |
3008 | static const char *default_dp_desc = "None"; | |
3009 | ||
64ff1d96 | 3010 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 BP |
3011 | struct ofp_desc_stats *ods; |
3012 | struct ofpbuf *msg; | |
3013 | ||
982697a4 BP |
3014 | msg = ofpraw_alloc_stats_reply(request, 0); |
3015 | ods = ofpbuf_put_zeros(msg, sizeof *ods); | |
061bfea4 BP |
3016 | ovs_strlcpy(ods->mfr_desc, p->mfr_desc ? p->mfr_desc : default_mfr_desc, |
3017 | sizeof ods->mfr_desc); | |
3018 | ovs_strlcpy(ods->hw_desc, p->hw_desc ? p->hw_desc : default_hw_desc, | |
3019 | sizeof ods->hw_desc); | |
3020 | ovs_strlcpy(ods->sw_desc, p->sw_desc ? p->sw_desc : default_sw_desc, | |
3021 | sizeof ods->sw_desc); | |
3022 | ovs_strlcpy(ods->serial_num, | |
3023 | p->serial_desc ? p->serial_desc : default_serial_desc, | |
3024 | sizeof ods->serial_num); | |
3025 | ovs_strlcpy(ods->dp_desc, p->dp_desc ? p->dp_desc : default_dp_desc, | |
3026 | sizeof ods->dp_desc); | |
b0421aa2 | 3027 | ofconn_send_reply(ofconn, msg); |
064af421 BP |
3028 | |
3029 | return 0; | |
3030 | } | |
3031 | ||
90bf1e07 | 3032 | static enum ofperr |
3269c562 | 3033 | handle_table_stats_request(struct ofconn *ofconn, |
982697a4 | 3034 | const struct ofp_header *request) |
064af421 | 3035 | { |
64ff1d96 | 3036 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
307975da | 3037 | struct ofp12_table_stats *ots; |
064af421 | 3038 | struct ofpbuf *msg; |
c2f0373a | 3039 | int n_tables; |
6c1491fb | 3040 | size_t i; |
064af421 | 3041 | |
307975da SH |
3042 | /* Set up default values. |
3043 | * | |
3044 | * ofp12_table_stats is used as a generic structure as | |
3045 | * it is able to hold all the fields for ofp10_table_stats | |
3046 | * and ofp11_table_stats (and of course itself). | |
3047 | */ | |
3048 | ots = xcalloc(p->n_tables, sizeof *ots); | |
6c1491fb BP |
3049 | for (i = 0; i < p->n_tables; i++) { |
3050 | ots[i].table_id = i; | |
34582733 | 3051 | sprintf(ots[i].name, "table%"PRIuSIZE, i); |
6240624b BP |
3052 | ots[i].match = htonll(OFPXMT13_MASK); |
3053 | ots[i].wildcards = htonll(OFPXMT13_MASK); | |
e78b61f6 BP |
3054 | ots[i].write_actions = htonl(OFPAT11_OUTPUT); |
3055 | ots[i].apply_actions = htonl(OFPAT11_OUTPUT); | |
6240624b BP |
3056 | ots[i].write_setfields = htonll(OFPXMT13_MASK); |
3057 | ots[i].apply_setfields = htonll(OFPXMT13_MASK); | |
b8266395 BP |
3058 | ots[i].metadata_match = OVS_BE64_MAX; |
3059 | ots[i].metadata_write = OVS_BE64_MAX; | |
307975da SH |
3060 | ots[i].instructions = htonl(OFPIT11_ALL); |
3061 | ots[i].config = htonl(OFPTC11_TABLE_MISS_MASK); | |
6c1491fb | 3062 | ots[i].max_entries = htonl(1000000); /* An arbitrary big number. */ |
06f81620 | 3063 | fat_rwlock_rdlock(&p->tables[i].cls.rwlock); |
d0918789 | 3064 | ots[i].active_count = htonl(classifier_count(&p->tables[i].cls)); |
06f81620 | 3065 | fat_rwlock_unlock(&p->tables[i].cls.rwlock); |
6c1491fb | 3066 | } |
064af421 | 3067 | |
6c1491fb | 3068 | p->ofproto_class->get_tables(p, ots); |
064af421 | 3069 | |
c2f0373a BP |
3070 | /* Post-process the tables, dropping hidden tables. */ |
3071 | n_tables = p->n_tables; | |
254750ce BP |
3072 | for (i = 0; i < p->n_tables; i++) { |
3073 | const struct oftable *table = &p->tables[i]; | |
3074 | ||
c2f0373a BP |
3075 | if (table->flags & OFTABLE_HIDDEN) { |
3076 | n_tables = i; | |
3077 | break; | |
3078 | } | |
3079 | ||
254750ce BP |
3080 | if (table->name) { |
3081 | ovs_strzcpy(ots[i].name, table->name, sizeof ots[i].name); | |
3082 | } | |
3083 | ||
3084 | if (table->max_flows < ntohl(ots[i].max_entries)) { | |
3085 | ots[i].max_entries = htonl(table->max_flows); | |
3086 | } | |
3087 | } | |
3088 | ||
c2f0373a | 3089 | msg = ofputil_encode_table_stats_reply(ots, n_tables, request); |
b0421aa2 | 3090 | ofconn_send_reply(ofconn, msg); |
307975da SH |
3091 | |
3092 | free(ots); | |
3093 | ||
064af421 BP |
3094 | return 0; |
3095 | } | |
3096 | ||
abaad8cf | 3097 | static void |
63f2140a | 3098 | append_port_stat(struct ofport *port, struct list *replies) |
abaad8cf | 3099 | { |
f8e4867e | 3100 | struct ofputil_port_stats ops = { .port_no = port->pp.port_no }; |
abaad8cf | 3101 | |
65e0be10 BP |
3102 | calc_duration(port->created, time_msec(), |
3103 | &ops.duration_sec, &ops.duration_nsec); | |
3104 | ||
d295e8e9 JP |
3105 | /* Intentionally ignore return value, since errors will set |
3106 | * 'stats' to all-1s, which is correct for OpenFlow, and | |
abaad8cf | 3107 | * netdev_get_stats() will log errors. */ |
f8e4867e SH |
3108 | ofproto_port_get_stats(port, &ops.stats); |
3109 | ||
3110 | ofputil_append_port_stat(replies, &ops); | |
abaad8cf JP |
3111 | } |
3112 | ||
90bf1e07 | 3113 | static enum ofperr |
63f2140a | 3114 | handle_port_stats_request(struct ofconn *ofconn, |
982697a4 | 3115 | const struct ofp_header *request) |
064af421 | 3116 | { |
64ff1d96 | 3117 | struct ofproto *p = ofconn_get_ofproto(ofconn); |
064af421 | 3118 | struct ofport *port; |
63f2140a | 3119 | struct list replies; |
4e022ec0 | 3120 | ofp_port_t port_no; |
f8e4867e SH |
3121 | enum ofperr error; |
3122 | ||
3123 | error = ofputil_decode_port_stats_request(request, &port_no); | |
3124 | if (error) { | |
3125 | return error; | |
3126 | } | |
064af421 | 3127 | |
982697a4 | 3128 | ofpmp_init(&replies, request); |
7f05e7ab | 3129 | if (port_no != OFPP_ANY) { |
f8e4867e | 3130 | port = ofproto_get_port(p, port_no); |
abaad8cf | 3131 | if (port) { |
63f2140a | 3132 | append_port_stat(port, &replies); |
abaad8cf JP |
3133 | } |
3134 | } else { | |
4e8e4213 | 3135 | HMAP_FOR_EACH (port, hmap_node, &p->ports) { |
63f2140a | 3136 | append_port_stat(port, &replies); |
abaad8cf | 3137 | } |
064af421 BP |
3138 | } |
3139 | ||
63f2140a | 3140 | ofconn_send_replies(ofconn, &replies); |
064af421 BP |
3141 | return 0; |
3142 | } | |
3143 | ||
2be393ed JP |
3144 | static enum ofperr |
3145 | handle_port_desc_stats_request(struct ofconn *ofconn, | |
982697a4 | 3146 | const struct ofp_header *request) |
2be393ed JP |
3147 | { |
3148 | struct ofproto *p = ofconn_get_ofproto(ofconn); | |
2e3fa633 | 3149 | enum ofp_version version; |
2be393ed JP |
3150 | struct ofport *port; |
3151 | struct list replies; | |
3152 | ||
982697a4 | 3153 | ofpmp_init(&replies, request); |
2be393ed | 3154 | |
2e3fa633 | 3155 | version = ofputil_protocol_to_ofp_version(ofconn_get_protocol(ofconn)); |
2be393ed | 3156 | HMAP_FOR_EACH (port, hmap_node, &p->ports) { |
2e3fa633 | 3157 | ofputil_append_port_desc_stats_reply(version, &port->pp, &replies); |
2be393ed JP |
3158 | } |
3159 | ||
3160 | ofconn_send_replies(ofconn, &replies); | |
3161 | return 0; | |
3162 | } | |
3163 | ||
98eaac36 JR |
3164 | static uint32_t |
3165 | hash_cookie(ovs_be64 cookie) | |
3166 | { | |
3167 | return hash_2words((OVS_FORCE uint64_t)cookie >> 32, | |
3168 | (OVS_FORCE uint64_t)cookie); | |
3169 | } | |
3170 | ||
3171 | static void | |
3172 | cookies_insert(struct ofproto *ofproto, struct rule *rule) | |
2c916028 | 3173 | OVS_REQUIRES(ofproto_mutex) |
98eaac36 JR |
3174 | { |
3175 | hindex_insert(&ofproto->cookies, &rule->cookie_node, | |
3176 | hash_cookie(rule->flow_cookie)); | |
3177 | } | |
3178 | ||
3179 | static void | |
3180 | cookies_remove(struct ofproto *ofproto, struct rule *rule) | |
2c916028 | 3181 | OVS_REQUIRES(ofproto_mutex) |
98eaac36 JR |
3182 | { |
3183 | hindex_remove(&ofproto->cookies, &rule->cookie_node); | |
3184 | } | |
3185 | ||
3186 | static void | |
3187 | ofproto_rule_change_cookie(struct ofproto *ofproto, struct rule *rule, | |
3188 | ovs_be64 new_cookie) | |
15aaf599 | 3189 | OVS_REQUIRES(ofproto_mutex) |
98eaac36 JR |
3190 | { |
3191 | if (new_cookie != rule->flow_cookie) { | |
3192 | cookies_remove(ofproto, rule); | |
3193 | ||
c7c9a7c8 | 3194 | ovs_mutex_lock(&rule->mutex); |
98eaac36 | 3195 | rule->flow_cookie = new_cookie; |
c7c9a7c8 | 3196 | ovs_mutex_unlock(&rule->mutex); |
98eaac36 JR |
3197 | |
3198 | cookies_insert(ofproto, rule); | |
3199 | } | |
3200 | } | |
3201 | ||
c6ebb8fb | 3202 | static void |
65e0be10 BP |
3203 | calc_duration(long long int start, long long int now, |
3204 | uint32_t *sec, uint32_t *nsec) | |
c6ebb8fb | 3205 | { |
f27f2134 | 3206 | long long int msecs = now - start; |
588cd7b5 BP |
3207 | *sec = msecs / 1000; |
3208 | *nsec = (msecs % 1000) * (1000 * 1000); | |
3209 | } | |
3210 | ||
48266274 | 3211 | /* Checks whether 'table_id' is 0xff or a valid table ID in 'ofproto'. Returns |
554764d1 SH |
3212 | * true if 'table_id' is OK, false otherwise. */ |
3213 | static bool | |
48266274 BP |
3214 | check_table_id(const struct ofproto *ofproto, uint8_t table_id) |
3215 | { | |
554764d1 | 3216 | return table_id == OFPTT_ALL || table_id < ofproto->n_tables; |
48266274 BP |
3217 | } |
3218 | ||
5c67e4af | 3219 | static struct oftable * |
d4ce8a49 | 3220 | next_visible_table(const struct ofproto *ofproto, uint8_t table_id) |
5c67e4af BP |
3221 | { |
3222 | struct oftable *table; | |
3223 | ||
3224 | for (table = &ofproto->tables[table_id]; | |
3225 | table < &ofproto->tables[ofproto->n_tables]; | |
3226 | table++) { | |
3227 | if (!(table->flags & OFTABLE_HIDDEN)) { | |
3228 | return table; | |
3229 | } | |
3230 | } | |
3231 | ||
3232 | return NULL; | |
3233 | } | |
3234 | ||
d0918789 | 3235 | static struct oftable * |
d4ce8a49 | 3236 | first_matching_table(const struct ofproto *ofproto, uint8_t table_id) |
064af421 | 3237 | { |
6c1491fb | 3238 | if (table_id == 0xff) { |
5c67e4af | 3239 | return next_visible_table(ofproto, 0); |
6c1491fb BP |
3240 | } else if (table_id < ofproto->n_tables) { |
3241 | return &ofproto->tables[table_id]; | |
a02e5331 | 3242 | } else { |
6c1491fb | 3243 | return NULL; |
a02e5331 | 3244 | } |
064af421 BP |
3245 | } |
3246 | ||
d0918789 | 3247 | static struct oftable * |
d4ce8a49 BP |
3248 | next_matching_table(const struct ofproto *ofproto, |
3249 | const struct oftable *table, uint8_t table_id) | |
6c1491fb | 3250 | { |
5c67e4af BP |
3251 | return (table_id == 0xff |
3252 | ? next_visible_table(ofproto, (table - ofproto->tables) + 1) | |
6c1491fb BP |
3253 | : NULL); |
3254 | } | |
3255 | ||
d0918789 | 3256 | /* Assigns TABLE to each oftable, in turn, that matches TABLE_ID in OFPROTO: |
6c1491fb BP |
3257 | * |
3258 | * - If TABLE_ID is 0xff, this iterates over every classifier table in | |
5c67e4af | 3259 | * OFPROTO, skipping tables marked OFTABLE_HIDDEN. |
6c1491fb BP |
3260 | * |
3261 | * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates | |
5c67e4af BP |
3262 | * only once, for that table. (This can be used to access tables marked |
3263 | * OFTABLE_HIDDEN.) | |
6c1491fb | 3264 | * |
48266274 BP |
3265 | * - Otherwise, TABLE_ID isn't valid for OFPROTO, so the loop won't be |
3266 | * entered at all. (Perhaps you should have validated TABLE_ID with | |
3267 | * check_table_id().) | |
6c1491fb BP |
3268 | * |
3269 | * All parameters are evaluated multiple times. | |
3270 | */ | |
d0918789 BP |
3271 | #define FOR_EACH_MATCHING_TABLE(TABLE, TABLE_ID, OFPROTO) \ |
3272 | for ((TABLE) = first_matching_table(OFPROTO, TABLE_ID); \ | |
3273 | (TABLE) != NULL; \ | |
3274 | (TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID)) | |
6c1491fb | 3275 | |
a9b22b7f BP |
3276 | /* Initializes 'criteria' in a straightforward way based on the other |
3277 | * parameters. | |
3278 | * | |
3279 | * For "loose" matching, the 'priority' parameter is unimportant and may be | |
3280 | * supplied as 0. */ | |
3281 | static void | |
3282 | rule_criteria_init(struct rule_criteria *criteria, uint8_t table_id, | |
3283 | const struct match *match, unsigned int priority, | |
3284 | ovs_be64 cookie, ovs_be64 cookie_mask, | |
3285 | ofp_port_t out_port, uint32_t out_group) | |
3286 | { | |
3287 | criteria->table_id = table_id; | |
3288 | cls_rule_init(&criteria->cr, match, priority); | |
3289 | criteria->cookie = cookie; | |
3290 | criteria->cookie_mask = cookie_mask; | |
3291 | criteria->out_port = out_port; | |
3292 | criteria->out_group = out_group; | |
3293 | } | |
3294 | ||
3295 | static void | |
3296 | rule_criteria_destroy(struct rule_criteria *criteria) | |
3297 | { | |
3298 | cls_rule_destroy(&criteria->cr); | |
3299 | } | |
3300 | ||
a8e547c1 BP |
3301 | void |
3302 | rule_collection_init(struct rule_collection *rules) | |
3303 | { | |
3304 | rules->rules = rules->stub; | |
3305 | rules->n = 0; | |
3306 | rules->capacity = ARRAY_SIZE(rules->stub); | |
3307 | } | |
3308 | ||
3309 | void | |
3310 | rule_collection_add(struct rule_collection *rules, struct rule *rule) | |
3311 | { | |
3312 | if (rules->n >= rules->capacity) { | |
3313 | size_t old_size, new_size; | |
3314 | ||
3315 | old_size = rules->capacity * sizeof *rules->rules; | |
3316 | rules->capacity *= 2; | |
3317 | new_size = rules->capacity * sizeof *rules->rules; | |
3318 | ||
3319 | if (rules->rules == rules->stub) { | |
3320 | rules->rules = xmalloc(new_size); | |
3321 | memcpy(rules->rules, rules->stub, old_size); | |
3322 | } else { | |
3323 | rules->rules = xrealloc(rules->rules, new_size); | |
3324 | } | |
3325 | } | |
3326 | ||
3327 | rules->rules[rules->n++] = rule; | |
3328 | } | |
3329 | ||
15aaf599 BP |
3330 | void |
3331 | rule_collection_ref(struct rule_collection *rules) | |
3332 | OVS_REQUIRES(ofproto_mutex) | |
3333 | { | |
3334 | size_t i; | |
3335 | ||
3336 | for (i = 0; i < rules->n; i++) { | |
3337 | ofproto_rule_ref(rules->rules[i]); | |
3338 | } | |
3339 | } | |
3340 | ||
3341 | void | |
3342 | rule_collection_unref(struct rule_collection *rules) | |
3343 | { | |
3344 | size_t i; | |
3345 | ||
3346 | for (i = 0; i < rules->n; i++) { | |
3347 | ofproto_rule_unref(rules->rules[i]); | |
3348 | } | |
3349 | } | |
3350 | ||
a8e547c1 BP |
3351 | void |
3352 | rule_collection_destroy(struct rule_collection *rules) | |
3353 | { | |
3354 | if (rules->rules != rules->stub) { | |
3355 | free(rules->rules); | |
3356 | } | |
3357 | } | |
3358 | ||
6c1d7642 | 3359 | static enum ofperr |
a9b22b7f | 3360 | collect_rule(struct rule *rule, const struct rule_criteria *c, |
a8e547c1 | 3361 | struct rule_collection *rules) |
15aaf599 | 3362 | OVS_REQUIRES(ofproto_mutex) |
6c1d7642 | 3363 | { |
3e8116d9 BP |
3364 | /* We ordinarily want to skip hidden rules, but there has to be a way for |
3365 | * code internal to OVS to modify and delete them, so if the criteria | |
3366 | * specify a priority that can only be for a hidden flow, then allow hidden | |
3367 | * rules to be selected. (This doesn't allow OpenFlow clients to meddle | |
3368 | * with hidden flows because OpenFlow uses only a 16-bit field to specify | |
3369 | * priority.) */ | |
3370 | if (ofproto_rule_is_hidden(rule) && c->cr.priority <= UINT16_MAX) { | |
6c1d7642 BP |
3371 | return 0; |
3372 | } else if (rule->pending) { | |
3373 | return OFPROTO_POSTPONE; | |
3374 | } else { | |
a9b22b7f BP |
3375 | if ((c->table_id == rule->table_id || c->table_id == 0xff) |
3376 | && ofproto_rule_has_out_port(rule, c->out_port) | |
3377 | && ofproto_rule_has_out_group(rule, c->out_group) | |
3378 | && !((rule->flow_cookie ^ c->cookie) & c->cookie_mask)) { | |
a8e547c1 | 3379 | rule_collection_add(rules, rule); |
6c1d7642 BP |
3380 | } |
3381 | return 0; | |
3382 | } | |
3383 | } | |
3384 | ||
a9b22b7f BP |
3385 | /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches |
3386 | * on classifiers rules are done in the "loose" way required for OpenFlow | |
3387 | * OFPFC_MODIFY and OFPFC_DELETE requests. Puts the selected rules on list | |
9ed18e46 BP |
3388 | * 'rules'. |
3389 | * | |
9ed18e46 BP |
3390 | * Hidden rules are always omitted. |
3391 | * | |
3392 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 3393 | static enum ofperr |
a9b22b7f | 3394 | collect_rules_loose(struct ofproto *ofproto, |
a8e547c1 BP |
3395 | const struct rule_criteria *criteria, |
3396 | struct rule_collection *rules) | |
15aaf599 | 3397 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 3398 | { |
d0918789 | 3399 | struct oftable *table; |
554764d1 | 3400 | enum ofperr error = 0; |
48266274 | 3401 | |
a8e547c1 BP |
3402 | rule_collection_init(rules); |
3403 | ||
554764d1 SH |
3404 | if (!check_table_id(ofproto, criteria->table_id)) { |
3405 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
a8e547c1 | 3406 | goto exit; |
48266274 | 3407 | } |
9ed18e46 | 3408 | |
b8266395 | 3409 | if (criteria->cookie_mask == OVS_BE64_MAX) { |
98eaac36 JR |
3410 | struct rule *rule; |
3411 | ||
a9b22b7f BP |
3412 | HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node, |
3413 | hash_cookie(criteria->cookie), | |
98eaac36 | 3414 | &ofproto->cookies) { |
a9b22b7f BP |
3415 | if (cls_rule_is_loose_match(&rule->cr, &criteria->cr.match)) { |
3416 | error = collect_rule(rule, criteria, rules); | |
6c1d7642 BP |
3417 | if (error) { |
3418 | break; | |
98eaac36 JR |
3419 | } |
3420 | } | |
3421 | } | |
6c1d7642 | 3422 | } else { |
a9b22b7f | 3423 | FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) { |
6c1d7642 BP |
3424 | struct cls_cursor cursor; |
3425 | struct rule *rule; | |
9ed18e46 | 3426 | |
06f81620 | 3427 | fat_rwlock_rdlock(&table->cls.rwlock); |
a9b22b7f | 3428 | cls_cursor_init(&cursor, &table->cls, &criteria->cr); |
6c1d7642 | 3429 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
a9b22b7f | 3430 | error = collect_rule(rule, criteria, rules); |
6c1d7642 BP |
3431 | if (error) { |
3432 | break; | |
3433 | } | |
9ed18e46 | 3434 | } |
06f81620 | 3435 | fat_rwlock_unlock(&table->cls.rwlock); |
9ed18e46 BP |
3436 | } |
3437 | } | |
48d28ac1 | 3438 | |
a8e547c1 BP |
3439 | exit: |
3440 | if (error) { | |
3441 | rule_collection_destroy(rules); | |
3442 | } | |
48d28ac1 | 3443 | return error; |
9ed18e46 BP |
3444 | } |
3445 | ||
a9b22b7f BP |
3446 | /* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches |
3447 | * on classifiers rules are done in the "strict" way required for OpenFlow | |
3448 | * OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests. Puts the selected | |
3449 | * rules on list 'rules'. | |
9ed18e46 BP |
3450 | * |
3451 | * Hidden rules are always omitted. | |
3452 | * | |
3453 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 3454 | static enum ofperr |
a9b22b7f | 3455 | collect_rules_strict(struct ofproto *ofproto, |
a8e547c1 BP |
3456 | const struct rule_criteria *criteria, |
3457 | struct rule_collection *rules) | |
15aaf599 | 3458 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 3459 | { |
d0918789 | 3460 | struct oftable *table; |
554764d1 | 3461 | int error = 0; |
48266274 | 3462 | |
a8e547c1 BP |
3463 | rule_collection_init(rules); |
3464 | ||
554764d1 SH |
3465 | if (!check_table_id(ofproto, criteria->table_id)) { |
3466 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
a8e547c1 | 3467 | goto exit; |
48266274 | 3468 | } |
9ed18e46 | 3469 | |
b8266395 | 3470 | if (criteria->cookie_mask == OVS_BE64_MAX) { |
98eaac36 JR |
3471 | struct rule *rule; |
3472 | ||
a9b22b7f BP |
3473 | HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node, |
3474 | hash_cookie(criteria->cookie), | |
98eaac36 | 3475 | &ofproto->cookies) { |
a9b22b7f BP |
3476 | if (cls_rule_equal(&rule->cr, &criteria->cr)) { |
3477 | error = collect_rule(rule, criteria, rules); | |
6c1d7642 BP |
3478 | if (error) { |
3479 | break; | |
98eaac36 JR |
3480 | } |
3481 | } | |
3482 | } | |
6c1d7642 | 3483 | } else { |
a9b22b7f | 3484 | FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) { |
6c1d7642 | 3485 | struct rule *rule; |
9ed18e46 | 3486 | |
06f81620 | 3487 | fat_rwlock_rdlock(&table->cls.rwlock); |
a9b22b7f BP |
3488 | rule = rule_from_cls_rule(classifier_find_rule_exactly( |
3489 | &table->cls, &criteria->cr)); | |
06f81620 | 3490 | fat_rwlock_unlock(&table->cls.rwlock); |
6c1d7642 | 3491 | if (rule) { |
a9b22b7f | 3492 | error = collect_rule(rule, criteria, rules); |
6c1d7642 BP |
3493 | if (error) { |
3494 | break; | |
3495 | } | |
9ed18e46 BP |
3496 | } |
3497 | } | |
3498 | } | |
48d28ac1 | 3499 | |
a8e547c1 BP |
3500 | exit: |
3501 | if (error) { | |
3502 | rule_collection_destroy(rules); | |
3503 | } | |
6c1d7642 | 3504 | return error; |
9ed18e46 BP |
3505 | } |
3506 | ||
f27f2134 BP |
3507 | /* Returns 'age_ms' (a duration in milliseconds), converted to seconds and |
3508 | * forced into the range of a uint16_t. */ | |
3509 | static int | |
3510 | age_secs(long long int age_ms) | |
3511 | { | |
3512 | return (age_ms < 0 ? 0 | |
3513 | : age_ms >= UINT16_MAX * 1000 ? UINT16_MAX | |
3514 | : (unsigned int) age_ms / 1000); | |
3515 | } | |
3516 | ||
90bf1e07 | 3517 | static enum ofperr |
63f2140a | 3518 | handle_flow_stats_request(struct ofconn *ofconn, |
982697a4 | 3519 | const struct ofp_header *request) |
15aaf599 | 3520 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 3521 | { |
64ff1d96 | 3522 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 3523 | struct ofputil_flow_stats_request fsr; |
a9b22b7f | 3524 | struct rule_criteria criteria; |
a8e547c1 | 3525 | struct rule_collection rules; |
63f2140a | 3526 | struct list replies; |
90bf1e07 | 3527 | enum ofperr error; |
a8e547c1 | 3528 | size_t i; |
09246b99 | 3529 | |
982697a4 | 3530 | error = ofputil_decode_flow_stats_request(&fsr, request); |
09246b99 BP |
3531 | if (error) { |
3532 | return error; | |
3533 | } | |
3534 | ||
a9b22b7f BP |
3535 | rule_criteria_init(&criteria, fsr.table_id, &fsr.match, 0, fsr.cookie, |
3536 | fsr.cookie_mask, fsr.out_port, fsr.out_group); | |
15aaf599 BP |
3537 | |
3538 | ovs_mutex_lock(&ofproto_mutex); | |
a9b22b7f BP |
3539 | error = collect_rules_loose(ofproto, &criteria, &rules); |
3540 | rule_criteria_destroy(&criteria); | |
15aaf599 BP |
3541 | if (!error) { |
3542 | rule_collection_ref(&rules); | |
3543 | } | |
3544 | ovs_mutex_unlock(&ofproto_mutex); | |
3545 | ||
9ed18e46 BP |
3546 | if (error) { |
3547 | return error; | |
3548 | } | |
5ecc9d81 | 3549 | |
982697a4 | 3550 | ofpmp_init(&replies, request); |
a8e547c1 BP |
3551 | for (i = 0; i < rules.n; i++) { |
3552 | struct rule *rule = rules.rules[i]; | |
f27f2134 | 3553 | long long int now = time_msec(); |
9ed18e46 | 3554 | struct ofputil_flow_stats fs; |
15aaf599 BP |
3555 | long long int created, used, modified; |
3556 | struct rule_actions *actions; | |
3557 | enum ofputil_flow_mod_flags flags; | |
a3779dbc | 3558 | |
d10976b7 | 3559 | ovs_mutex_lock(&rule->mutex); |
15aaf599 | 3560 | fs.cookie = rule->flow_cookie; |
a3779dbc EJ |
3561 | fs.idle_timeout = rule->idle_timeout; |
3562 | fs.hard_timeout = rule->hard_timeout; | |
15aaf599 BP |
3563 | created = rule->created; |
3564 | used = rule->used; | |
3565 | modified = rule->modified; | |
3566 | actions = rule_get_actions__(rule); | |
3567 | flags = rule->flags; | |
d10976b7 | 3568 | ovs_mutex_unlock(&rule->mutex); |
a3779dbc | 3569 | |
15aaf599 BP |
3570 | minimatch_expand(&rule->cr.match, &fs.match); |
3571 | fs.table_id = rule->table_id; | |
3572 | calc_duration(created, now, &fs.duration_sec, &fs.duration_nsec); | |
3573 | fs.priority = rule->cr.priority; | |
3574 | fs.idle_age = age_secs(now - used); | |
3575 | fs.hard_age = age_secs(now - modified); | |
3576 | ofproto->ofproto_class->rule_get_stats(rule, &fs.packet_count, | |
3577 | &fs.byte_count); | |
3578 | fs.ofpacts = actions->ofpacts; | |
3579 | fs.ofpacts_len = actions->ofpacts_len; | |
3f517bcd | 3580 | |
15aaf599 | 3581 | fs.flags = flags; |
9ed18e46 | 3582 | ofputil_append_flow_stats_reply(&fs, &replies); |
15aaf599 BP |
3583 | |
3584 | rule_actions_unref(actions); | |
3c4486a5 | 3585 | } |
15aaf599 BP |
3586 | |
3587 | rule_collection_unref(&rules); | |
a8e547c1 BP |
3588 | rule_collection_destroy(&rules); |
3589 | ||
63f2140a | 3590 | ofconn_send_replies(ofconn, &replies); |
5ecc9d81 | 3591 | |
09246b99 BP |
3592 | return 0; |
3593 | } | |
3594 | ||
4f2cad2c | 3595 | static void |
3394b5b6 | 3596 | flow_stats_ds(struct rule *rule, struct ds *results) |
4f2cad2c | 3597 | { |
4f2cad2c | 3598 | uint64_t packet_count, byte_count; |
15aaf599 BP |
3599 | struct rule_actions *actions; |
3600 | long long int created; | |
4f2cad2c | 3601 | |
abe529af BP |
3602 | rule->ofproto->ofproto_class->rule_get_stats(rule, |
3603 | &packet_count, &byte_count); | |
4f2cad2c | 3604 | |
15aaf599 BP |
3605 | ovs_mutex_lock(&rule->mutex); |
3606 | actions = rule_get_actions__(rule); | |
3607 | created = rule->created; | |
3608 | ovs_mutex_unlock(&rule->mutex); | |
3609 | ||
6c1491fb BP |
3610 | if (rule->table_id != 0) { |
3611 | ds_put_format(results, "table_id=%"PRIu8", ", rule->table_id); | |
3612 | } | |
15aaf599 | 3613 | ds_put_format(results, "duration=%llds, ", (time_msec() - created) / 1000); |
4f2cad2c JP |
3614 | ds_put_format(results, "n_packets=%"PRIu64", ", packet_count); |
3615 | ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count); | |
cb833cf6 | 3616 | cls_rule_format(&rule->cr, results); |
a5df0e72 | 3617 | ds_put_char(results, ','); |
15aaf599 | 3618 | |
455ecd77 | 3619 | ds_put_cstr(results, "actions="); |
15aaf599 BP |
3620 | ofpacts_format(actions->ofpacts, actions->ofpacts_len, results); |
3621 | ||
4f2cad2c | 3622 | ds_put_cstr(results, "\n"); |
15aaf599 BP |
3623 | |
3624 | rule_actions_unref(actions); | |
4f2cad2c JP |
3625 | } |
3626 | ||
d295e8e9 | 3627 | /* Adds a pretty-printed description of all flows to 'results', including |
ee8b231c | 3628 | * hidden flows (e.g., set up by in-band control). */ |
4f2cad2c JP |
3629 | void |
3630 | ofproto_get_all_flows(struct ofproto *p, struct ds *results) | |
3631 | { | |
d0918789 | 3632 | struct oftable *table; |
6c1491fb | 3633 | |
d0918789 | 3634 | OFPROTO_FOR_EACH_TABLE (table, p) { |
6c1491fb BP |
3635 | struct cls_cursor cursor; |
3636 | struct rule *rule; | |
064af421 | 3637 | |
06f81620 | 3638 | fat_rwlock_rdlock(&table->cls.rwlock); |
d0918789 | 3639 | cls_cursor_init(&cursor, &table->cls, NULL); |
6c1491fb BP |
3640 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
3641 | flow_stats_ds(rule, results); | |
3642 | } | |
06f81620 | 3643 | fat_rwlock_unlock(&table->cls.rwlock); |
064af421 | 3644 | } |
064af421 BP |
3645 | } |
3646 | ||
b5827b24 BP |
3647 | /* Obtains the NetFlow engine type and engine ID for 'ofproto' into |
3648 | * '*engine_type' and '*engine_id', respectively. */ | |
3649 | void | |
3650 | ofproto_get_netflow_ids(const struct ofproto *ofproto, | |
3651 | uint8_t *engine_type, uint8_t *engine_id) | |
3652 | { | |
abe529af | 3653 | ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id); |
b5827b24 BP |
3654 | } |
3655 | ||
9a9e3786 BP |
3656 | /* Checks the status of CFM configured on 'ofp_port' within 'ofproto'. Returns |
3657 | * true if the port's CFM status was successfully stored into '*status'. | |
3658 | * Returns false if the port did not have CFM configured, in which case | |
3659 | * '*status' is indeterminate. | |
3660 | * | |
13b1b2ae | 3661 | * The caller must provide and owns '*status', and must free 'status->rmps'. */ |
9a9e3786 | 3662 | bool |
4e022ec0 | 3663 | ofproto_port_get_cfm_status(const struct ofproto *ofproto, ofp_port_t ofp_port, |
9a9e3786 | 3664 | struct ofproto_cfm_status *status) |
3967a833 MM |
3665 | { |
3666 | struct ofport *ofport = ofproto_get_port(ofproto, ofp_port); | |
9a9e3786 BP |
3667 | return (ofport |
3668 | && ofproto->ofproto_class->get_cfm_status | |
3669 | && ofproto->ofproto_class->get_cfm_status(ofport, status)); | |
3967a833 MM |
3670 | } |
3671 | ||
90bf1e07 | 3672 | static enum ofperr |
76c93b22 | 3673 | handle_aggregate_stats_request(struct ofconn *ofconn, |
982697a4 | 3674 | const struct ofp_header *oh) |
15aaf599 | 3675 | OVS_EXCLUDED(ofproto_mutex) |
27d34fce | 3676 | { |
76c93b22 | 3677 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
81d1ea94 | 3678 | struct ofputil_flow_stats_request request; |
76c93b22 | 3679 | struct ofputil_aggregate_stats stats; |
5e9d0469 | 3680 | bool unknown_packets, unknown_bytes; |
a9b22b7f | 3681 | struct rule_criteria criteria; |
a8e547c1 | 3682 | struct rule_collection rules; |
76c93b22 | 3683 | struct ofpbuf *reply; |
90bf1e07 | 3684 | enum ofperr error; |
a8e547c1 | 3685 | size_t i; |
27d34fce | 3686 | |
982697a4 | 3687 | error = ofputil_decode_flow_stats_request(&request, oh); |
76c93b22 BP |
3688 | if (error) { |
3689 | return error; | |
3690 | } | |
5ecc9d81 | 3691 | |
a9b22b7f BP |
3692 | rule_criteria_init(&criteria, request.table_id, &request.match, 0, |
3693 | request.cookie, request.cookie_mask, | |
3694 | request.out_port, request.out_group); | |
15aaf599 BP |
3695 | |
3696 | ovs_mutex_lock(&ofproto_mutex); | |
a9b22b7f BP |
3697 | error = collect_rules_loose(ofproto, &criteria, &rules); |
3698 | rule_criteria_destroy(&criteria); | |
15aaf599 BP |
3699 | if (!error) { |
3700 | rule_collection_ref(&rules); | |
3701 | } | |
3702 | ovs_mutex_unlock(&ofproto_mutex); | |
3703 | ||
9ed18e46 BP |
3704 | if (error) { |
3705 | return error; | |
3706 | } | |
3c4486a5 | 3707 | |
9ed18e46 | 3708 | memset(&stats, 0, sizeof stats); |
5e9d0469 | 3709 | unknown_packets = unknown_bytes = false; |
a8e547c1 BP |
3710 | for (i = 0; i < rules.n; i++) { |
3711 | struct rule *rule = rules.rules[i]; | |
9ed18e46 BP |
3712 | uint64_t packet_count; |
3713 | uint64_t byte_count; | |
5ecc9d81 | 3714 | |
9ed18e46 BP |
3715 | ofproto->ofproto_class->rule_get_stats(rule, &packet_count, |
3716 | &byte_count); | |
5ecc9d81 | 3717 | |
5e9d0469 BP |
3718 | if (packet_count == UINT64_MAX) { |
3719 | unknown_packets = true; | |
3720 | } else { | |
3721 | stats.packet_count += packet_count; | |
3722 | } | |
3723 | ||
3724 | if (byte_count == UINT64_MAX) { | |
3725 | unknown_bytes = true; | |
3726 | } else { | |
3727 | stats.byte_count += byte_count; | |
3728 | } | |
3729 | ||
9ed18e46 | 3730 | stats.flow_count++; |
3c4486a5 | 3731 | } |
5e9d0469 BP |
3732 | if (unknown_packets) { |
3733 | stats.packet_count = UINT64_MAX; | |
3734 | } | |
3735 | if (unknown_bytes) { | |
3736 | stats.byte_count = UINT64_MAX; | |
3737 | } | |
27d34fce | 3738 | |
15aaf599 | 3739 | rule_collection_unref(&rules); |
a8e547c1 BP |
3740 | rule_collection_destroy(&rules); |
3741 | ||
982697a4 | 3742 | reply = ofputil_encode_aggregate_stats_reply(&stats, oh); |
76c93b22 | 3743 | ofconn_send_reply(ofconn, reply); |
09246b99 BP |
3744 | |
3745 | return 0; | |
3746 | } | |
3747 | ||
c1c9c9c4 | 3748 | struct queue_stats_cbdata { |
ca0f572c | 3749 | struct ofport *ofport; |
63f2140a | 3750 | struct list replies; |
6dc34a0d | 3751 | long long int now; |
c1c9c9c4 BP |
3752 | }; |
3753 | ||
3754 | static void | |
db9220c3 | 3755 | put_queue_stats(struct queue_stats_cbdata *cbdata, uint32_t queue_id, |
c1c9c9c4 BP |
3756 | const struct netdev_queue_stats *stats) |
3757 | { | |
6dc34a0d | 3758 | struct ofputil_queue_stats oqs; |
c1c9c9c4 | 3759 | |
6dc34a0d BP |
3760 | oqs.port_no = cbdata->ofport->pp.port_no; |
3761 | oqs.queue_id = queue_id; | |
3762 | oqs.tx_bytes = stats->tx_bytes; | |
3763 | oqs.tx_packets = stats->tx_packets; | |
3764 | oqs.tx_errors = stats->tx_errors; | |
3765 | if (stats->created != LLONG_MIN) { | |
3766 | calc_duration(stats->created, cbdata->now, | |
3767 | &oqs.duration_sec, &oqs.duration_nsec); | |
3768 | } else { | |
3769 | oqs.duration_sec = oqs.duration_nsec = UINT32_MAX; | |
3770 | } | |
64626975 | 3771 | ofputil_append_queue_stat(&cbdata->replies, &oqs); |
c1c9c9c4 BP |
3772 | } |
3773 | ||
3774 | static void | |
db9220c3 | 3775 | handle_queue_stats_dump_cb(uint32_t queue_id, |
c1c9c9c4 BP |
3776 | struct netdev_queue_stats *stats, |
3777 | void *cbdata_) | |
3778 | { | |
3779 | struct queue_stats_cbdata *cbdata = cbdata_; | |
3780 | ||
3781 | put_queue_stats(cbdata, queue_id, stats); | |
3782 | } | |
3783 | ||
0414d158 | 3784 | static enum ofperr |
ca0f572c | 3785 | handle_queue_stats_for_port(struct ofport *port, uint32_t queue_id, |
c1c9c9c4 BP |
3786 | struct queue_stats_cbdata *cbdata) |
3787 | { | |
ca0f572c | 3788 | cbdata->ofport = port; |
c1c9c9c4 BP |
3789 | if (queue_id == OFPQ_ALL) { |
3790 | netdev_dump_queue_stats(port->netdev, | |
3791 | handle_queue_stats_dump_cb, cbdata); | |
3792 | } else { | |
3793 | struct netdev_queue_stats stats; | |
3794 | ||
1ac788f6 BP |
3795 | if (!netdev_get_queue_stats(port->netdev, queue_id, &stats)) { |
3796 | put_queue_stats(cbdata, queue_id, &stats); | |
0414d158 BP |
3797 | } else { |
3798 | return OFPERR_OFPQOFC_BAD_QUEUE; | |
1ac788f6 | 3799 | } |
c1c9c9c4 | 3800 | } |
0414d158 | 3801 | return 0; |
c1c9c9c4 BP |
3802 | } |
3803 | ||
90bf1e07 | 3804 | static enum ofperr |
63f2140a | 3805 | handle_queue_stats_request(struct ofconn *ofconn, |
982697a4 | 3806 | const struct ofp_header *rq) |
c1c9c9c4 | 3807 | { |
64ff1d96 | 3808 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
c1c9c9c4 | 3809 | struct queue_stats_cbdata cbdata; |
0414d158 | 3810 | struct ofport *port; |
0414d158 | 3811 | enum ofperr error; |
64626975 | 3812 | struct ofputil_queue_stats_request oqsr; |
c1c9c9c4 | 3813 | |
c1c9c9c4 BP |
3814 | COVERAGE_INC(ofproto_queue_req); |
3815 | ||
982697a4 | 3816 | ofpmp_init(&cbdata.replies, rq); |
6dc34a0d | 3817 | cbdata.now = time_msec(); |
c1c9c9c4 | 3818 | |
64626975 SH |
3819 | error = ofputil_decode_queue_stats_request(rq, &oqsr); |
3820 | if (error) { | |
3821 | return error; | |
3822 | } | |
3823 | ||
7f05e7ab | 3824 | if (oqsr.port_no == OFPP_ANY) { |
0414d158 | 3825 | error = OFPERR_OFPQOFC_BAD_QUEUE; |
4e8e4213 | 3826 | HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) { |
64626975 | 3827 | if (!handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata)) { |
0414d158 BP |
3828 | error = 0; |
3829 | } | |
c1c9c9c4 | 3830 | } |
0414d158 | 3831 | } else { |
64626975 | 3832 | port = ofproto_get_port(ofproto, oqsr.port_no); |
0414d158 | 3833 | error = (port |
64626975 | 3834 | ? handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata) |
0414d158 BP |
3835 | : OFPERR_OFPQOFC_BAD_PORT); |
3836 | } | |
3837 | if (!error) { | |
3838 | ofconn_send_replies(ofconn, &cbdata.replies); | |
c1c9c9c4 | 3839 | } else { |
63f2140a | 3840 | ofpbuf_list_delete(&cbdata.replies); |
c1c9c9c4 | 3841 | } |
c1c9c9c4 | 3842 | |
0414d158 | 3843 | return error; |
c1c9c9c4 | 3844 | } |
7ee20df1 BP |
3845 | |
3846 | static bool | |
3847 | is_flow_deletion_pending(const struct ofproto *ofproto, | |
3848 | const struct cls_rule *cls_rule, | |
3849 | uint8_t table_id) | |
15aaf599 | 3850 | OVS_REQUIRES(ofproto_mutex) |
7ee20df1 BP |
3851 | { |
3852 | if (!hmap_is_empty(&ofproto->deletions)) { | |
3853 | struct ofoperation *op; | |
3854 | ||
3855 | HMAP_FOR_EACH_WITH_HASH (op, hmap_node, | |
3856 | cls_rule_hash(cls_rule, table_id), | |
3857 | &ofproto->deletions) { | |
3858 | if (cls_rule_equal(cls_rule, &op->rule->cr)) { | |
3859 | return true; | |
3860 | } | |
3861 | } | |
3862 | } | |
3863 | ||
3864 | return false; | |
3865 | } | |
3866 | ||
2e31a9b8 BP |
3867 | static bool |
3868 | should_evict_a_rule(struct oftable *table, unsigned int extra_space) | |
15aaf599 BP |
3869 | OVS_REQUIRES(ofproto_mutex) |
3870 | OVS_NO_THREAD_SAFETY_ANALYSIS | |
8037acb4 | 3871 | { |
15aaf599 | 3872 | return classifier_count(&table->cls) + extra_space > table->max_flows; |
2e31a9b8 | 3873 | } |
8037acb4 | 3874 | |
2e31a9b8 BP |
3875 | static enum ofperr |
3876 | evict_rules_from_table(struct ofproto *ofproto, struct oftable *table, | |
3877 | unsigned int extra_space) | |
15aaf599 | 3878 | OVS_REQUIRES(ofproto_mutex) |
2e31a9b8 BP |
3879 | { |
3880 | while (should_evict_a_rule(table, extra_space)) { | |
3881 | struct rule *rule; | |
8037acb4 | 3882 | |
2e31a9b8 BP |
3883 | if (!choose_rule_to_evict(table, &rule)) { |
3884 | return OFPERR_OFPFMFC_TABLE_FULL; | |
3885 | } else if (rule->pending) { | |
2e31a9b8 BP |
3886 | return OFPROTO_POSTPONE; |
3887 | } else { | |
3888 | struct ofopgroup *group = ofopgroup_create_unattached(ofproto); | |
15aaf599 BP |
3889 | delete_flow__(rule, group, OFPRR_EVICTION); |
3890 | ofopgroup_submit(group); | |
2e31a9b8 | 3891 | } |
8037acb4 | 3892 | } |
2e31a9b8 BP |
3893 | |
3894 | return 0; | |
8037acb4 BP |
3895 | } |
3896 | ||
79eee1eb BP |
3897 | /* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT |
3898 | * in which no matching flow already exists in the flow table. | |
3899 | * | |
3900 | * Adds the flow specified by 'ofm', which is followed by 'n_actions' | |
75a75043 | 3901 | * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow |
90bf1e07 BP |
3902 | * error code on failure, or OFPROTO_POSTPONE if the operation cannot be |
3903 | * initiated now but may be retried later. | |
79eee1eb | 3904 | * |
2509616e | 3905 | * The caller retains ownership of 'fm->ofpacts'. |
f25d0cf3 | 3906 | * |
79eee1eb BP |
3907 | * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id, |
3908 | * if any. */ | |
90bf1e07 | 3909 | static enum ofperr |
a9a2da38 | 3910 | add_flow(struct ofproto *ofproto, struct ofconn *ofconn, |
e3b56933 | 3911 | struct ofputil_flow_mod *fm, const struct ofp_header *request) |
15aaf599 | 3912 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 3913 | { |
d0918789 | 3914 | struct oftable *table; |
7ee20df1 | 3915 | struct ofopgroup *group; |
8037acb4 | 3916 | struct cls_rule cr; |
064af421 | 3917 | struct rule *rule; |
5a361239 | 3918 | uint8_t table_id; |
554764d1 | 3919 | int error = 0; |
064af421 | 3920 | |
554764d1 SH |
3921 | if (!check_table_id(ofproto, fm->table_id)) { |
3922 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
48266274 BP |
3923 | return error; |
3924 | } | |
3925 | ||
7ee20df1 BP |
3926 | /* Pick table. */ |
3927 | if (fm->table_id == 0xff) { | |
13521ff5 | 3928 | if (ofproto->ofproto_class->rule_choose_table) { |
81a76618 BP |
3929 | error = ofproto->ofproto_class->rule_choose_table(ofproto, |
3930 | &fm->match, | |
7ee20df1 BP |
3931 | &table_id); |
3932 | if (error) { | |
3933 | return error; | |
3934 | } | |
cb22974d | 3935 | ovs_assert(table_id < ofproto->n_tables); |
7ee20df1 | 3936 | } else { |
5a361239 | 3937 | table_id = 0; |
7ee20df1 BP |
3938 | } |
3939 | } else if (fm->table_id < ofproto->n_tables) { | |
5a361239 | 3940 | table_id = fm->table_id; |
7ee20df1 | 3941 | } else { |
c22c56bd | 3942 | return OFPERR_OFPBRC_BAD_TABLE_ID; |
064af421 BP |
3943 | } |
3944 | ||
5a361239 JR |
3945 | table = &ofproto->tables[table_id]; |
3946 | ||
5c67e4af BP |
3947 | if (table->flags & OFTABLE_READONLY) { |
3948 | return OFPERR_OFPBRC_EPERM; | |
3949 | } | |
3950 | ||
8037acb4 BP |
3951 | cls_rule_init(&cr, &fm->match, fm->priority); |
3952 | ||
b277c7cc | 3953 | /* Transform "add" into "modify" if there's an existing identical flow. */ |
06f81620 | 3954 | fat_rwlock_rdlock(&table->cls.rwlock); |
8037acb4 | 3955 | rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls, &cr)); |
06f81620 | 3956 | fat_rwlock_unlock(&table->cls.rwlock); |
b277c7cc | 3957 | if (rule) { |
8037acb4 | 3958 | cls_rule_destroy(&cr); |
b277c7cc BP |
3959 | if (!rule_is_modifiable(rule)) { |
3960 | return OFPERR_OFPBRC_EPERM; | |
3961 | } else if (rule->pending) { | |
3962 | return OFPROTO_POSTPONE; | |
3963 | } else { | |
a8e547c1 | 3964 | struct rule_collection rules; |
b277c7cc | 3965 | |
a8e547c1 BP |
3966 | rule_collection_init(&rules); |
3967 | rule_collection_add(&rules, rule); | |
b277c7cc | 3968 | fm->modify_cookie = true; |
a8e547c1 BP |
3969 | error = modify_flows__(ofproto, ofconn, fm, request, &rules); |
3970 | rule_collection_destroy(&rules); | |
3971 | ||
3972 | return error; | |
b277c7cc BP |
3973 | } |
3974 | } | |
3975 | ||
7ee20df1 | 3976 | /* Serialize against pending deletion. */ |
8037acb4 BP |
3977 | if (is_flow_deletion_pending(ofproto, &cr, table_id)) { |
3978 | cls_rule_destroy(&cr); | |
7ee20df1 | 3979 | return OFPROTO_POSTPONE; |
afe75089 | 3980 | } |
064af421 | 3981 | |
81a76618 | 3982 | /* Check for overlap, if requested. */ |
0fb88c18 | 3983 | if (fm->flags & OFPUTIL_FF_CHECK_OVERLAP) { |
c09f755d BP |
3984 | bool overlaps; |
3985 | ||
06f81620 | 3986 | fat_rwlock_rdlock(&table->cls.rwlock); |
8037acb4 | 3987 | overlaps = classifier_rule_overlaps(&table->cls, &cr); |
06f81620 | 3988 | fat_rwlock_unlock(&table->cls.rwlock); |
c09f755d BP |
3989 | |
3990 | if (overlaps) { | |
8037acb4 | 3991 | cls_rule_destroy(&cr); |
c09f755d BP |
3992 | return OFPERR_OFPFMFC_OVERLAP; |
3993 | } | |
7ee20df1 | 3994 | } |
81a76618 | 3995 | |
8037acb4 | 3996 | /* If necessary, evict an existing rule to clear out space. */ |
2e31a9b8 | 3997 | error = evict_rules_from_table(ofproto, table, 1); |
8037acb4 BP |
3998 | if (error) { |
3999 | cls_rule_destroy(&cr); | |
4000 | return error; | |
4001 | } | |
2e1ae200 | 4002 | |
8037acb4 BP |
4003 | /* Allocate new rule. */ |
4004 | rule = ofproto->ofproto_class->rule_alloc(); | |
4005 | if (!rule) { | |
4006 | cls_rule_destroy(&cr); | |
4007 | VLOG_WARN_RL(&rl, "%s: failed to create rule (%s)", | |
4008 | ofproto->name, ovs_strerror(error)); | |
4009 | return ENOMEM; | |
4010 | } | |
4011 | ||
4012 | /* Initialize base state. */ | |
49a0e0eb BP |
4013 | *CONST_CAST(struct ofproto **, &rule->ofproto) = ofproto; |
4014 | cls_rule_move(CONST_CAST(struct cls_rule *, &rule->cr), &cr); | |
37bec3d3 | 4015 | ovs_refcount_init(&rule->ref_count); |
7ee20df1 | 4016 | rule->pending = NULL; |
623e1caf | 4017 | rule->flow_cookie = fm->new_cookie; |
1745cd08 | 4018 | rule->created = rule->modified = rule->used = time_msec(); |
a3779dbc | 4019 | |
d10976b7 BP |
4020 | ovs_mutex_init(&rule->mutex); |
4021 | ovs_mutex_lock(&rule->mutex); | |
7ee20df1 BP |
4022 | rule->idle_timeout = fm->idle_timeout; |
4023 | rule->hard_timeout = fm->hard_timeout; | |
d10976b7 | 4024 | ovs_mutex_unlock(&rule->mutex); |
a3779dbc | 4025 | |
49a0e0eb | 4026 | *CONST_CAST(uint8_t *, &rule->table_id) = table - ofproto->tables; |
3f517bcd | 4027 | rule->flags = fm->flags & OFPUTIL_FF_STATE; |
65efd2ab | 4028 | rule->actions = rule_actions_create(ofproto, fm->ofpacts, fm->ofpacts_len); |
9cae45dc | 4029 | list_init(&rule->meter_list_node); |
254750ce | 4030 | rule->eviction_group = NULL; |
e503cc19 | 4031 | list_init(&rule->expirable); |
2b07c8b1 BP |
4032 | rule->monitor_flags = 0; |
4033 | rule->add_seqno = 0; | |
4034 | rule->modify_seqno = 0; | |
7ee20df1 | 4035 | |
8037acb4 | 4036 | /* Construct rule, initializing derived state. */ |
b277c7cc BP |
4037 | error = ofproto->ofproto_class->rule_construct(rule); |
4038 | if (error) { | |
8037acb4 BP |
4039 | ofproto_rule_destroy__(rule); |
4040 | return error; | |
064af421 | 4041 | } |
8037acb4 BP |
4042 | |
4043 | /* Insert rule. */ | |
4044 | oftable_insert_rule(rule); | |
4045 | ||
4046 | group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id); | |
4047 | ofoperation_create(group, rule, OFOPERATION_ADD, 0); | |
4048 | ofproto->ofproto_class->rule_insert(rule); | |
b277c7cc | 4049 | ofopgroup_submit(group); |
79eee1eb | 4050 | |
7ee20df1 | 4051 | return error; |
064af421 | 4052 | } |
79eee1eb BP |
4053 | \f |
4054 | /* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */ | |
064af421 | 4055 | |
9ed18e46 BP |
4056 | /* Modifies the rules listed in 'rules', changing their actions to match those |
4057 | * in 'fm'. | |
79eee1eb | 4058 | * |
9ed18e46 BP |
4059 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, |
4060 | * if any. | |
4061 | * | |
4062 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 4063 | static enum ofperr |
7024dffe | 4064 | modify_flows__(struct ofproto *ofproto, struct ofconn *ofconn, |
e3b56933 | 4065 | struct ofputil_flow_mod *fm, const struct ofp_header *request, |
a8e547c1 | 4066 | const struct rule_collection *rules) |
15aaf599 | 4067 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4068 | { |
b277c7cc | 4069 | enum ofoperation_type type; |
7ee20df1 | 4070 | struct ofopgroup *group; |
5c67e4af | 4071 | enum ofperr error; |
a8e547c1 | 4072 | size_t i; |
79eee1eb | 4073 | |
b277c7cc | 4074 | type = fm->command == OFPFC_ADD ? OFOPERATION_REPLACE : OFOPERATION_MODIFY; |
7024dffe | 4075 | group = ofopgroup_create(ofproto, ofconn, request, fm->buffer_id); |
5c67e4af | 4076 | error = OFPERR_OFPBRC_EPERM; |
a8e547c1 BP |
4077 | for (i = 0; i < rules->n; i++) { |
4078 | struct rule *rule = rules->rules[i]; | |
08043761 BP |
4079 | struct ofoperation *op; |
4080 | bool actions_changed; | |
b277c7cc | 4081 | bool reset_counters; |
08043761 | 4082 | |
0fb88c18 | 4083 | /* FIXME: Implement OFPFUTIL_FF_RESET_COUNTS */ |
2e1ae200 | 4084 | |
5c67e4af BP |
4085 | if (rule_is_modifiable(rule)) { |
4086 | /* At least one rule is modifiable, don't report EPERM error. */ | |
4087 | error = 0; | |
4088 | } else { | |
4089 | continue; | |
4090 | } | |
4091 | ||
08043761 | 4092 | actions_changed = !ofpacts_equal(fm->ofpacts, fm->ofpacts_len, |
6f00e29b BP |
4093 | rule->actions->ofpacts, |
4094 | rule->actions->ofpacts_len); | |
a7d94793 | 4095 | |
b277c7cc | 4096 | op = ofoperation_create(group, rule, type, 0); |
98eaac36 | 4097 | |
b8266395 | 4098 | if (fm->modify_cookie && fm->new_cookie != OVS_BE64_MAX) { |
98eaac36 JR |
4099 | ofproto_rule_change_cookie(ofproto, rule, fm->new_cookie); |
4100 | } | |
b277c7cc | 4101 | if (type == OFOPERATION_REPLACE) { |
d10976b7 | 4102 | ovs_mutex_lock(&rule->mutex); |
b277c7cc BP |
4103 | rule->idle_timeout = fm->idle_timeout; |
4104 | rule->hard_timeout = fm->hard_timeout; | |
d10976b7 | 4105 | ovs_mutex_unlock(&rule->mutex); |
b277c7cc | 4106 | |
3f517bcd | 4107 | rule->flags = fm->flags & OFPUTIL_FF_STATE; |
b277c7cc BP |
4108 | if (fm->idle_timeout || fm->hard_timeout) { |
4109 | if (!rule->eviction_group) { | |
4110 | eviction_group_add_rule(rule); | |
4111 | } | |
4112 | } else { | |
4113 | eviction_group_remove_rule(rule); | |
4114 | } | |
4115 | } | |
4116 | ||
4117 | reset_counters = (fm->flags & OFPUTIL_FF_RESET_COUNTS) != 0; | |
4118 | if (actions_changed || reset_counters) { | |
6f00e29b BP |
4119 | struct rule_actions *new_actions; |
4120 | ||
4121 | op->actions = rule->actions; | |
65efd2ab JR |
4122 | new_actions = rule_actions_create(ofproto, |
4123 | fm->ofpacts, fm->ofpacts_len); | |
884e1dc4 | 4124 | |
c7c9a7c8 | 4125 | ovs_mutex_lock(&rule->mutex); |
6f00e29b | 4126 | rule->actions = new_actions; |
c7c9a7c8 | 4127 | ovs_mutex_unlock(&rule->mutex); |
884e1dc4 | 4128 | |
b277c7cc BP |
4129 | rule->ofproto->ofproto_class->rule_modify_actions(rule, |
4130 | reset_counters); | |
308881af | 4131 | } else { |
08043761 | 4132 | ofoperation_complete(op, 0); |
623e1caf | 4133 | } |
5ecc9d81 | 4134 | } |
7ee20df1 | 4135 | ofopgroup_submit(group); |
79eee1eb | 4136 | |
5c67e4af | 4137 | return error; |
9ed18e46 BP |
4138 | } |
4139 | ||
9387b970 SH |
4140 | static enum ofperr |
4141 | modify_flows_add(struct ofproto *ofproto, struct ofconn *ofconn, | |
e3b56933 | 4142 | struct ofputil_flow_mod *fm, const struct ofp_header *request) |
15aaf599 | 4143 | OVS_REQUIRES(ofproto_mutex) |
9387b970 | 4144 | { |
b8266395 | 4145 | if (fm->cookie_mask != htonll(0) || fm->new_cookie == OVS_BE64_MAX) { |
9387b970 SH |
4146 | return 0; |
4147 | } | |
4148 | return add_flow(ofproto, ofconn, fm, request); | |
4149 | } | |
4150 | ||
90bf1e07 BP |
4151 | /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on |
4152 | * failure. | |
9ed18e46 BP |
4153 | * |
4154 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, | |
4155 | * if any. */ | |
90bf1e07 | 4156 | static enum ofperr |
7024dffe | 4157 | modify_flows_loose(struct ofproto *ofproto, struct ofconn *ofconn, |
e3b56933 | 4158 | struct ofputil_flow_mod *fm, |
7ee20df1 | 4159 | const struct ofp_header *request) |
15aaf599 | 4160 | OVS_REQUIRES(ofproto_mutex) |
9ed18e46 | 4161 | { |
a9b22b7f | 4162 | struct rule_criteria criteria; |
a8e547c1 | 4163 | struct rule_collection rules; |
9ed18e46 BP |
4164 | int error; |
4165 | ||
a9b22b7f BP |
4166 | rule_criteria_init(&criteria, fm->table_id, &fm->match, 0, |
4167 | fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG11_ANY); | |
4168 | error = collect_rules_loose(ofproto, &criteria, &rules); | |
4169 | rule_criteria_destroy(&criteria); | |
4170 | ||
a8e547c1 BP |
4171 | if (!error) { |
4172 | error = (rules.n > 0 | |
4173 | ? modify_flows__(ofproto, ofconn, fm, request, &rules) | |
4174 | : modify_flows_add(ofproto, ofconn, fm, request)); | |
623e1caf | 4175 | } |
a8e547c1 BP |
4176 | |
4177 | rule_collection_destroy(&rules); | |
4178 | ||
4179 | return error; | |
79eee1eb BP |
4180 | } |
4181 | ||
4182 | /* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error | |
90bf1e07 | 4183 | * code on failure. |
79eee1eb | 4184 | * |
9ed18e46 | 4185 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, |
79eee1eb | 4186 | * if any. */ |
90bf1e07 | 4187 | static enum ofperr |
7024dffe | 4188 | modify_flow_strict(struct ofproto *ofproto, struct ofconn *ofconn, |
e3b56933 | 4189 | struct ofputil_flow_mod *fm, |
7ee20df1 | 4190 | const struct ofp_header *request) |
15aaf599 | 4191 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4192 | { |
a9b22b7f | 4193 | struct rule_criteria criteria; |
a8e547c1 | 4194 | struct rule_collection rules; |
6c1491fb BP |
4195 | int error; |
4196 | ||
a9b22b7f BP |
4197 | rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority, |
4198 | fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG11_ANY); | |
4199 | error = collect_rules_strict(ofproto, &criteria, &rules); | |
4200 | rule_criteria_destroy(&criteria); | |
4201 | ||
a8e547c1 BP |
4202 | if (!error) { |
4203 | if (rules.n == 0) { | |
4204 | error = modify_flows_add(ofproto, ofconn, fm, request); | |
4205 | } else if (rules.n == 1) { | |
4206 | error = modify_flows__(ofproto, ofconn, fm, request, &rules); | |
4207 | } | |
623e1caf | 4208 | } |
a8e547c1 BP |
4209 | |
4210 | rule_collection_destroy(&rules); | |
4211 | ||
4212 | return error; | |
79eee1eb | 4213 | } |
9ed18e46 BP |
4214 | \f |
4215 | /* OFPFC_DELETE implementation. */ | |
79eee1eb | 4216 | |
254750ce | 4217 | static void |
ca311b2f JR |
4218 | delete_flow__(struct rule *rule, struct ofopgroup *group, |
4219 | enum ofp_flow_removed_reason reason) | |
15aaf599 | 4220 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
4221 | { |
4222 | struct ofproto *ofproto = rule->ofproto; | |
4223 | ||
ca311b2f | 4224 | ofproto_rule_send_removed(rule, reason); |
254750ce | 4225 | |
ca311b2f | 4226 | ofoperation_create(group, rule, OFOPERATION_DELETE, reason); |
254750ce | 4227 | oftable_remove_rule(rule); |
8037acb4 | 4228 | ofproto->ofproto_class->rule_delete(rule); |
254750ce BP |
4229 | } |
4230 | ||
9ed18e46 BP |
4231 | /* Deletes the rules listed in 'rules'. |
4232 | * | |
4233 | * Returns 0 on success, otherwise an OpenFlow error code. */ | |
90bf1e07 | 4234 | static enum ofperr |
7024dffe | 4235 | delete_flows__(struct ofproto *ofproto, struct ofconn *ofconn, |
a8e547c1 BP |
4236 | const struct ofp_header *request, |
4237 | const struct rule_collection *rules, | |
ca311b2f | 4238 | enum ofp_flow_removed_reason reason) |
15aaf599 | 4239 | OVS_REQUIRES(ofproto_mutex) |
064af421 | 4240 | { |
7ee20df1 | 4241 | struct ofopgroup *group; |
a8e547c1 | 4242 | size_t i; |
79eee1eb | 4243 | |
7024dffe | 4244 | group = ofopgroup_create(ofproto, ofconn, request, UINT32_MAX); |
a8e547c1 | 4245 | for (i = 0; i < rules->n; i++) { |
15aaf599 | 4246 | delete_flow__(rules->rules[i], group, reason); |
79eee1eb | 4247 | } |
7ee20df1 | 4248 | ofopgroup_submit(group); |
79eee1eb | 4249 | |
9ed18e46 | 4250 | return 0; |
79eee1eb | 4251 | } |
79eee1eb BP |
4252 | |
4253 | /* Implements OFPFC_DELETE. */ | |
90bf1e07 | 4254 | static enum ofperr |
7024dffe BP |
4255 | delete_flows_loose(struct ofproto *ofproto, struct ofconn *ofconn, |
4256 | const struct ofputil_flow_mod *fm, | |
7ee20df1 | 4257 | const struct ofp_header *request) |
15aaf599 | 4258 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4259 | { |
a9b22b7f | 4260 | struct rule_criteria criteria; |
a8e547c1 | 4261 | struct rule_collection rules; |
90bf1e07 | 4262 | enum ofperr error; |
064af421 | 4263 | |
a9b22b7f BP |
4264 | rule_criteria_init(&criteria, fm->table_id, &fm->match, 0, |
4265 | fm->cookie, fm->cookie_mask, | |
4266 | fm->out_port, fm->out_group); | |
4267 | error = collect_rules_loose(ofproto, &criteria, &rules); | |
4268 | rule_criteria_destroy(&criteria); | |
4269 | ||
a8e547c1 BP |
4270 | if (!error && rules.n > 0) { |
4271 | error = delete_flows__(ofproto, ofconn, request, &rules, OFPRR_DELETE); | |
4272 | } | |
4273 | rule_collection_destroy(&rules); | |
4274 | ||
4275 | return error; | |
064af421 BP |
4276 | } |
4277 | ||
79eee1eb | 4278 | /* Implements OFPFC_DELETE_STRICT. */ |
90bf1e07 | 4279 | static enum ofperr |
7024dffe | 4280 | delete_flow_strict(struct ofproto *ofproto, struct ofconn *ofconn, |
1b9d6420 | 4281 | const struct ofputil_flow_mod *fm, |
7ee20df1 | 4282 | const struct ofp_header *request) |
15aaf599 | 4283 | OVS_REQUIRES(ofproto_mutex) |
79eee1eb | 4284 | { |
a9b22b7f | 4285 | struct rule_criteria criteria; |
a8e547c1 | 4286 | struct rule_collection rules; |
90bf1e07 | 4287 | enum ofperr error; |
79eee1eb | 4288 | |
a9b22b7f BP |
4289 | rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority, |
4290 | fm->cookie, fm->cookie_mask, | |
4291 | fm->out_port, fm->out_group); | |
4292 | error = collect_rules_strict(ofproto, &criteria, &rules); | |
4293 | rule_criteria_destroy(&criteria); | |
4294 | ||
a8e547c1 BP |
4295 | if (!error && rules.n > 0) { |
4296 | error = delete_flows__(ofproto, ofconn, request, &rules, OFPRR_DELETE); | |
4297 | } | |
4298 | rule_collection_destroy(&rules); | |
4299 | ||
4300 | return error; | |
abe529af BP |
4301 | } |
4302 | ||
4303 | static void | |
4304 | ofproto_rule_send_removed(struct rule *rule, uint8_t reason) | |
15aaf599 | 4305 | OVS_REQUIRES(ofproto_mutex) |
abe529af BP |
4306 | { |
4307 | struct ofputil_flow_removed fr; | |
4308 | ||
3f517bcd DB |
4309 | if (ofproto_rule_is_hidden(rule) || |
4310 | !(rule->flags & OFPUTIL_FF_SEND_FLOW_REM)) { | |
abe529af BP |
4311 | return; |
4312 | } | |
4313 | ||
5cb7a798 | 4314 | minimatch_expand(&rule->cr.match, &fr.match); |
81a76618 | 4315 | fr.priority = rule->cr.priority; |
abe529af BP |
4316 | fr.cookie = rule->flow_cookie; |
4317 | fr.reason = reason; | |
95216219 | 4318 | fr.table_id = rule->table_id; |
65e0be10 BP |
4319 | calc_duration(rule->created, time_msec(), |
4320 | &fr.duration_sec, &fr.duration_nsec); | |
d10976b7 | 4321 | ovs_mutex_lock(&rule->mutex); |
abe529af | 4322 | fr.idle_timeout = rule->idle_timeout; |
fa2bad0f | 4323 | fr.hard_timeout = rule->hard_timeout; |
d10976b7 | 4324 | ovs_mutex_unlock(&rule->mutex); |
abe529af BP |
4325 | rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count, |
4326 | &fr.byte_count); | |
4327 | ||
4328 | connmgr_send_flow_removed(rule->ofproto->connmgr, &fr); | |
4329 | } | |
4330 | ||
4331 | /* Sends an OpenFlow "flow removed" message with the given 'reason' (either | |
4332 | * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its | |
4333 | * ofproto. | |
4334 | * | |
e2a3d183 BP |
4335 | * 'rule' must not have a pending operation (that is, 'rule->pending' must be |
4336 | * NULL). | |
4337 | * | |
abe529af BP |
4338 | * ofproto implementation ->run() functions should use this function to expire |
4339 | * OpenFlow flows. */ | |
4340 | void | |
4341 | ofproto_rule_expire(struct rule *rule, uint8_t reason) | |
15aaf599 | 4342 | OVS_REQUIRES(ofproto_mutex) |
abe529af | 4343 | { |
7ee20df1 | 4344 | struct ofproto *ofproto = rule->ofproto; |
7ee20df1 | 4345 | |
7395c052 NZ |
4346 | ovs_assert(reason == OFPRR_HARD_TIMEOUT || reason == OFPRR_IDLE_TIMEOUT |
4347 | || reason == OFPRR_DELETE || reason == OFPRR_GROUP_DELETE); | |
7ee20df1 | 4348 | |
ad9ca2fc | 4349 | ofproto_rule_delete__(ofproto, rule, reason); |
79eee1eb | 4350 | } |
994c9973 BP |
4351 | |
4352 | /* Reduces '*timeout' to no more than 'max'. A value of zero in either case | |
4353 | * means "infinite". */ | |
4354 | static void | |
4355 | reduce_timeout(uint16_t max, uint16_t *timeout) | |
4356 | { | |
4357 | if (max && (!*timeout || *timeout > max)) { | |
4358 | *timeout = max; | |
4359 | } | |
4360 | } | |
4361 | ||
4362 | /* If 'idle_timeout' is nonzero, and 'rule' has no idle timeout or an idle | |
4363 | * timeout greater than 'idle_timeout', lowers 'rule''s idle timeout to | |
4364 | * 'idle_timeout' seconds. Similarly for 'hard_timeout'. | |
4365 | * | |
4366 | * Suitable for implementing OFPACT_FIN_TIMEOUT. */ | |
4367 | void | |
4368 | ofproto_rule_reduce_timeouts(struct rule *rule, | |
4369 | uint16_t idle_timeout, uint16_t hard_timeout) | |
d10976b7 | 4370 | OVS_EXCLUDED(ofproto_mutex, rule->mutex) |
994c9973 BP |
4371 | { |
4372 | if (!idle_timeout && !hard_timeout) { | |
4373 | return; | |
4374 | } | |
4375 | ||
abe7b10f | 4376 | ovs_mutex_lock(&ofproto_mutex); |
994c9973 BP |
4377 | if (list_is_empty(&rule->expirable)) { |
4378 | list_insert(&rule->ofproto->expirable, &rule->expirable); | |
4379 | } | |
abe7b10f | 4380 | ovs_mutex_unlock(&ofproto_mutex); |
994c9973 | 4381 | |
d10976b7 | 4382 | ovs_mutex_lock(&rule->mutex); |
994c9973 BP |
4383 | reduce_timeout(idle_timeout, &rule->idle_timeout); |
4384 | reduce_timeout(hard_timeout, &rule->hard_timeout); | |
d10976b7 | 4385 | ovs_mutex_unlock(&rule->mutex); |
994c9973 | 4386 | } |
79eee1eb | 4387 | \f |
90bf1e07 | 4388 | static enum ofperr |
2e4f5fcf | 4389 | handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh) |
15aaf599 | 4390 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 4391 | { |
a5b8d268 | 4392 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
a9a2da38 | 4393 | struct ofputil_flow_mod fm; |
f25d0cf3 BP |
4394 | uint64_t ofpacts_stub[1024 / 8]; |
4395 | struct ofpbuf ofpacts; | |
90bf1e07 | 4396 | enum ofperr error; |
a5b8d268 | 4397 | long long int now; |
064af421 | 4398 | |
76589937 | 4399 | error = reject_slave_controller(ofconn); |
9deba63b | 4400 | if (error) { |
f25d0cf3 | 4401 | goto exit; |
9deba63b | 4402 | } |
3052b0c5 | 4403 | |
f25d0cf3 BP |
4404 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
4405 | error = ofputil_decode_flow_mod(&fm, oh, ofconn_get_protocol(ofconn), | |
7e9f8266 BP |
4406 | &ofpacts, |
4407 | u16_to_ofp(ofproto->max_ports), | |
4408 | ofproto->n_tables); | |
4409 | if (!error) { | |
4410 | error = ofproto_check_ofpacts(ofproto, fm.ofpacts, fm.ofpacts_len); | |
4411 | } | |
548de4dd | 4412 | if (!error) { |
f1822532 | 4413 | error = handle_flow_mod__(ofproto, ofconn, &fm, oh); |
49bdc010 | 4414 | } |
a5b8d268 | 4415 | if (error) { |
f25d0cf3 | 4416 | goto exit_free_ofpacts; |
a5b8d268 | 4417 | } |
2e310801 | 4418 | |
a5b8d268 BP |
4419 | /* Record the operation for logging a summary report. */ |
4420 | switch (fm.command) { | |
4421 | case OFPFC_ADD: | |
4422 | ofproto->n_add++; | |
4423 | break; | |
4424 | ||
4425 | case OFPFC_MODIFY: | |
4426 | case OFPFC_MODIFY_STRICT: | |
4427 | ofproto->n_modify++; | |
4428 | break; | |
4429 | ||
4430 | case OFPFC_DELETE: | |
4431 | case OFPFC_DELETE_STRICT: | |
4432 | ofproto->n_delete++; | |
4433 | break; | |
4434 | } | |
4435 | ||
4436 | now = time_msec(); | |
4437 | if (ofproto->next_op_report == LLONG_MAX) { | |
4438 | ofproto->first_op = now; | |
4439 | ofproto->next_op_report = MAX(now + 10 * 1000, | |
4440 | ofproto->op_backoff); | |
4441 | ofproto->op_backoff = ofproto->next_op_report + 60 * 1000; | |
4442 | } | |
4443 | ofproto->last_op = now; | |
4444 | ||
f25d0cf3 BP |
4445 | exit_free_ofpacts: |
4446 | ofpbuf_uninit(&ofpacts); | |
4447 | exit: | |
4448 | return error; | |
75a75043 BP |
4449 | } |
4450 | ||
90bf1e07 | 4451 | static enum ofperr |
75a75043 | 4452 | handle_flow_mod__(struct ofproto *ofproto, struct ofconn *ofconn, |
e3b56933 | 4453 | struct ofputil_flow_mod *fm, const struct ofp_header *oh) |
15aaf599 | 4454 | OVS_EXCLUDED(ofproto_mutex) |
75a75043 | 4455 | { |
35412852 | 4456 | enum ofperr error; |
75a75043 | 4457 | |
15aaf599 | 4458 | ovs_mutex_lock(&ofproto_mutex); |
35412852 BP |
4459 | if (ofproto->n_pending < 50) { |
4460 | switch (fm->command) { | |
4461 | case OFPFC_ADD: | |
4462 | error = add_flow(ofproto, ofconn, fm, oh); | |
4463 | break; | |
3052b0c5 | 4464 | |
35412852 BP |
4465 | case OFPFC_MODIFY: |
4466 | error = modify_flows_loose(ofproto, ofconn, fm, oh); | |
4467 | break; | |
3052b0c5 | 4468 | |
35412852 BP |
4469 | case OFPFC_MODIFY_STRICT: |
4470 | error = modify_flow_strict(ofproto, ofconn, fm, oh); | |
4471 | break; | |
3052b0c5 | 4472 | |
35412852 BP |
4473 | case OFPFC_DELETE: |
4474 | error = delete_flows_loose(ofproto, ofconn, fm, oh); | |
4475 | break; | |
3052b0c5 | 4476 | |
35412852 BP |
4477 | case OFPFC_DELETE_STRICT: |
4478 | error = delete_flow_strict(ofproto, ofconn, fm, oh); | |
4479 | break; | |
3052b0c5 | 4480 | |
35412852 BP |
4481 | default: |
4482 | if (fm->command > 0xff) { | |
4483 | VLOG_WARN_RL(&rl, "%s: flow_mod has explicit table_id but " | |
4484 | "flow_mod_table_id extension is not enabled", | |
4485 | ofproto->name); | |
4486 | } | |
4487 | error = OFPERR_OFPFMFC_BAD_COMMAND; | |
4488 | break; | |
6c1491fb | 4489 | } |
35412852 BP |
4490 | } else { |
4491 | ovs_assert(!list_is_empty(&ofproto->pending)); | |
4492 | error = OFPROTO_POSTPONE; | |
3052b0c5 | 4493 | } |
15aaf599 | 4494 | ovs_mutex_unlock(&ofproto_mutex); |
35412852 BP |
4495 | |
4496 | run_rule_executes(ofproto); | |
4497 | return error; | |
3052b0c5 BP |
4498 | } |
4499 | ||
90bf1e07 | 4500 | static enum ofperr |
d1e2cf21 | 4501 | handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh) |
9deba63b | 4502 | { |
f4f1ea7e BP |
4503 | struct ofputil_role_request request; |
4504 | struct ofputil_role_request reply; | |
9deba63b | 4505 | struct ofpbuf *buf; |
6ea4776b JR |
4506 | enum ofperr error; |
4507 | ||
f4f1ea7e | 4508 | error = ofputil_decode_role_message(oh, &request); |
6ea4776b JR |
4509 | if (error) { |
4510 | return error; | |
4511 | } | |
9deba63b | 4512 | |
f4f1ea7e BP |
4513 | if (request.role != OFPCR12_ROLE_NOCHANGE) { |
4514 | if (ofconn_get_role(ofconn) != request.role | |
4515 | && ofconn_has_pending_opgroups(ofconn)) { | |
4516 | return OFPROTO_POSTPONE; | |
4517 | } | |
7ee20df1 | 4518 | |
f4f1ea7e BP |
4519 | if (request.have_generation_id |
4520 | && !ofconn_set_master_election_id(ofconn, request.generation_id)) { | |
4521 | return OFPERR_OFPRRFC_STALE; | |
6ea4776b | 4522 | } |
6ea4776b | 4523 | |
f4f1ea7e BP |
4524 | ofconn_set_role(ofconn, request.role); |
4525 | } | |
9deba63b | 4526 | |
f4f1ea7e | 4527 | reply.role = ofconn_get_role(ofconn); |
147cc9d3 BP |
4528 | reply.have_generation_id = ofconn_get_master_election_id( |
4529 | ofconn, &reply.generation_id); | |
f4f1ea7e | 4530 | buf = ofputil_encode_role_reply(oh, &reply); |
b0421aa2 | 4531 | ofconn_send_reply(ofconn, buf); |
9deba63b BP |
4532 | |
4533 | return 0; | |
4534 | } | |
4535 | ||
90bf1e07 | 4536 | static enum ofperr |
6c1491fb BP |
4537 | handle_nxt_flow_mod_table_id(struct ofconn *ofconn, |
4538 | const struct ofp_header *oh) | |
4539 | { | |
982697a4 | 4540 | const struct nx_flow_mod_table_id *msg = ofpmsg_body(oh); |
27527aa0 BP |
4541 | enum ofputil_protocol cur, next; |
4542 | ||
4543 | cur = ofconn_get_protocol(ofconn); | |
4544 | next = ofputil_protocol_set_tid(cur, msg->set != 0); | |
4545 | ofconn_set_protocol(ofconn, next); | |
6c1491fb | 4546 | |
6c1491fb BP |
4547 | return 0; |
4548 | } | |
4549 | ||
90bf1e07 | 4550 | static enum ofperr |
d1e2cf21 | 4551 | handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh) |
09246b99 | 4552 | { |
982697a4 | 4553 | const struct nx_set_flow_format *msg = ofpmsg_body(oh); |
27527aa0 BP |
4554 | enum ofputil_protocol cur, next; |
4555 | enum ofputil_protocol next_base; | |
09246b99 | 4556 | |
27527aa0 BP |
4557 | next_base = ofputil_nx_flow_format_to_protocol(ntohl(msg->format)); |
4558 | if (!next_base) { | |
90bf1e07 | 4559 | return OFPERR_OFPBRC_EPERM; |
09246b99 | 4560 | } |
7ee20df1 | 4561 | |
27527aa0 BP |
4562 | cur = ofconn_get_protocol(ofconn); |
4563 | next = ofputil_protocol_set_base(cur, next_base); | |
4564 | if (cur != next && ofconn_has_pending_opgroups(ofconn)) { | |
4565 | /* Avoid sending async messages in surprising protocol. */ | |
7ee20df1 BP |
4566 | return OFPROTO_POSTPONE; |
4567 | } | |
4568 | ||
27527aa0 | 4569 | ofconn_set_protocol(ofconn, next); |
7ee20df1 | 4570 | return 0; |
09246b99 BP |
4571 | } |
4572 | ||
90bf1e07 | 4573 | static enum ofperr |
54834960 EJ |
4574 | handle_nxt_set_packet_in_format(struct ofconn *ofconn, |
4575 | const struct ofp_header *oh) | |
4576 | { | |
982697a4 | 4577 | const struct nx_set_packet_in_format *msg = ofpmsg_body(oh); |
54834960 EJ |
4578 | uint32_t format; |
4579 | ||
54834960 | 4580 | format = ntohl(msg->format); |
a15f0eeb | 4581 | if (format != NXPIF_OPENFLOW10 && format != NXPIF_NXM) { |
90bf1e07 | 4582 | return OFPERR_OFPBRC_EPERM; |
54834960 EJ |
4583 | } |
4584 | ||
4585 | if (format != ofconn_get_packet_in_format(ofconn) | |
4586 | && ofconn_has_pending_opgroups(ofconn)) { | |
4587 | /* Avoid sending async message in surprsing packet in format. */ | |
4588 | return OFPROTO_POSTPONE; | |
4589 | } | |
4590 | ||
4591 | ofconn_set_packet_in_format(ofconn, format); | |
4592 | return 0; | |
4593 | } | |
4594 | ||
80d5aefd BP |
4595 | static enum ofperr |
4596 | handle_nxt_set_async_config(struct ofconn *ofconn, const struct ofp_header *oh) | |
4597 | { | |
982697a4 | 4598 | const struct nx_async_config *msg = ofpmsg_body(oh); |
80d5aefd BP |
4599 | uint32_t master[OAM_N_TYPES]; |
4600 | uint32_t slave[OAM_N_TYPES]; | |
4601 | ||
4602 | master[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[0]); | |
4603 | master[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[0]); | |
4604 | master[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[0]); | |
4605 | ||
4606 | slave[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[1]); | |
4607 | slave[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[1]); | |
4608 | slave[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[1]); | |
4609 | ||
4610 | ofconn_set_async_config(ofconn, master, slave); | |
4550b647 MM |
4611 | if (ofconn_get_type(ofconn) == OFCONN_SERVICE && |
4612 | !ofconn_get_miss_send_len(ofconn)) { | |
4613 | ofconn_set_miss_send_len(ofconn, OFP_DEFAULT_MISS_SEND_LEN); | |
4614 | } | |
80d5aefd BP |
4615 | |
4616 | return 0; | |
4617 | } | |
4618 | ||
c423b3b3 AC |
4619 | static enum ofperr |
4620 | handle_nxt_get_async_request(struct ofconn *ofconn, const struct ofp_header *oh) | |
4621 | { | |
4622 | struct ofpbuf *buf; | |
4623 | uint32_t master[OAM_N_TYPES]; | |
4624 | uint32_t slave[OAM_N_TYPES]; | |
4625 | struct nx_async_config *msg; | |
4626 | ||
4627 | ofconn_get_async_config(ofconn, master, slave); | |
4628 | buf = ofpraw_alloc_reply(OFPRAW_OFPT13_GET_ASYNC_REPLY, oh, 0); | |
4629 | msg = ofpbuf_put_zeros(buf, sizeof *msg); | |
4630 | ||
4631 | msg->packet_in_mask[0] = htonl(master[OAM_PACKET_IN]); | |
4632 | msg->port_status_mask[0] = htonl(master[OAM_PORT_STATUS]); | |
4633 | msg->flow_removed_mask[0] = htonl(master[OAM_FLOW_REMOVED]); | |
4634 | ||
4635 | msg->packet_in_mask[1] = htonl(slave[OAM_PACKET_IN]); | |
4636 | msg->port_status_mask[1] = htonl(slave[OAM_PORT_STATUS]); | |
4637 | msg->flow_removed_mask[1] = htonl(slave[OAM_FLOW_REMOVED]); | |
4638 | ||
4639 | ofconn_send_reply(ofconn, buf); | |
4640 | ||
4641 | return 0; | |
4642 | } | |
4643 | ||
a7349929 BP |
4644 | static enum ofperr |
4645 | handle_nxt_set_controller_id(struct ofconn *ofconn, | |
4646 | const struct ofp_header *oh) | |
4647 | { | |
982697a4 | 4648 | const struct nx_controller_id *nci = ofpmsg_body(oh); |
a7349929 | 4649 | |
a7349929 BP |
4650 | if (!is_all_zeros(nci->zero, sizeof nci->zero)) { |
4651 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
4652 | } | |
4653 | ||
4654 | ofconn_set_controller_id(ofconn, ntohs(nci->controller_id)); | |
4655 | return 0; | |
4656 | } | |
4657 | ||
90bf1e07 | 4658 | static enum ofperr |
d1e2cf21 | 4659 | handle_barrier_request(struct ofconn *ofconn, const struct ofp_header *oh) |
246e61ea | 4660 | { |
246e61ea JP |
4661 | struct ofpbuf *buf; |
4662 | ||
7ee20df1 BP |
4663 | if (ofconn_has_pending_opgroups(ofconn)) { |
4664 | return OFPROTO_POSTPONE; | |
4665 | } | |
4666 | ||
982697a4 BP |
4667 | buf = ofpraw_alloc_reply((oh->version == OFP10_VERSION |
4668 | ? OFPRAW_OFPT10_BARRIER_REPLY | |
4669 | : OFPRAW_OFPT11_BARRIER_REPLY), oh, 0); | |
b0421aa2 | 4670 | ofconn_send_reply(ofconn, buf); |
246e61ea JP |
4671 | return 0; |
4672 | } | |
4673 | ||
2b07c8b1 BP |
4674 | static void |
4675 | ofproto_compose_flow_refresh_update(const struct rule *rule, | |
4676 | enum nx_flow_monitor_flags flags, | |
4677 | struct list *msgs) | |
15aaf599 | 4678 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
4679 | { |
4680 | struct ofoperation *op = rule->pending; | |
6f00e29b | 4681 | const struct rule_actions *actions; |
2b07c8b1 | 4682 | struct ofputil_flow_update fu; |
5cb7a798 | 4683 | struct match match; |
2b07c8b1 | 4684 | |
b277c7cc | 4685 | if (op && op->type == OFOPERATION_ADD) { |
2b07c8b1 BP |
4686 | /* We'll report the final flow when the operation completes. Reporting |
4687 | * it now would cause a duplicate report later. */ | |
4688 | return; | |
4689 | } | |
4690 | ||
4691 | fu.event = (flags & (NXFMF_INITIAL | NXFMF_ADD) | |
4692 | ? NXFME_ADDED : NXFME_MODIFIED); | |
4693 | fu.reason = 0; | |
d10976b7 | 4694 | ovs_mutex_lock(&rule->mutex); |
2b07c8b1 BP |
4695 | fu.idle_timeout = rule->idle_timeout; |
4696 | fu.hard_timeout = rule->hard_timeout; | |
d10976b7 | 4697 | ovs_mutex_unlock(&rule->mutex); |
2b07c8b1 BP |
4698 | fu.table_id = rule->table_id; |
4699 | fu.cookie = rule->flow_cookie; | |
5cb7a798 BP |
4700 | minimatch_expand(&rule->cr.match, &match); |
4701 | fu.match = &match; | |
6b140a4e | 4702 | fu.priority = rule->cr.priority; |
6f00e29b | 4703 | |
2b07c8b1 | 4704 | if (!(flags & NXFMF_ACTIONS)) { |
6f00e29b | 4705 | actions = NULL; |
2b07c8b1 | 4706 | } else if (!op) { |
6f00e29b | 4707 | actions = rule->actions; |
2b07c8b1 BP |
4708 | } else { |
4709 | /* An operation is in progress. Use the previous version of the flow's | |
4710 | * actions, so that when the operation commits we report the change. */ | |
4711 | switch (op->type) { | |
4712 | case OFOPERATION_ADD: | |
428b2edd | 4713 | OVS_NOT_REACHED(); |
2b07c8b1 BP |
4714 | |
4715 | case OFOPERATION_MODIFY: | |
b277c7cc | 4716 | case OFOPERATION_REPLACE: |
6f00e29b | 4717 | actions = op->actions ? op->actions : rule->actions; |
2b07c8b1 BP |
4718 | break; |
4719 | ||
4720 | case OFOPERATION_DELETE: | |
6f00e29b | 4721 | actions = rule->actions; |
2b07c8b1 BP |
4722 | break; |
4723 | ||
4724 | default: | |
428b2edd | 4725 | OVS_NOT_REACHED(); |
2b07c8b1 BP |
4726 | } |
4727 | } | |
6f00e29b BP |
4728 | fu.ofpacts = actions ? actions->ofpacts : NULL; |
4729 | fu.ofpacts_len = actions ? actions->ofpacts_len : 0; | |
2b07c8b1 BP |
4730 | |
4731 | if (list_is_empty(msgs)) { | |
4732 | ofputil_start_flow_update(msgs); | |
4733 | } | |
4734 | ofputil_append_flow_update(&fu, msgs); | |
4735 | } | |
4736 | ||
4737 | void | |
a8e547c1 BP |
4738 | ofmonitor_compose_refresh_updates(struct rule_collection *rules, |
4739 | struct list *msgs) | |
15aaf599 | 4740 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 | 4741 | { |
a8e547c1 | 4742 | size_t i; |
2b07c8b1 | 4743 | |
a8e547c1 BP |
4744 | for (i = 0; i < rules->n; i++) { |
4745 | struct rule *rule = rules->rules[i]; | |
2b07c8b1 BP |
4746 | enum nx_flow_monitor_flags flags = rule->monitor_flags; |
4747 | rule->monitor_flags = 0; | |
4748 | ||
4749 | ofproto_compose_flow_refresh_update(rule, flags, msgs); | |
4750 | } | |
4751 | } | |
4752 | ||
4753 | static void | |
4754 | ofproto_collect_ofmonitor_refresh_rule(const struct ofmonitor *m, | |
4755 | struct rule *rule, uint64_t seqno, | |
a8e547c1 | 4756 | struct rule_collection *rules) |
15aaf599 | 4757 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
4758 | { |
4759 | enum nx_flow_monitor_flags update; | |
4760 | ||
4761 | if (ofproto_rule_is_hidden(rule)) { | |
4762 | return; | |
4763 | } | |
4764 | ||
4765 | if (!(rule->pending | |
4766 | ? ofoperation_has_out_port(rule->pending, m->out_port) | |
4767 | : ofproto_rule_has_out_port(rule, m->out_port))) { | |
4768 | return; | |
4769 | } | |
4770 | ||
4771 | if (seqno) { | |
4772 | if (rule->add_seqno > seqno) { | |
4773 | update = NXFMF_ADD | NXFMF_MODIFY; | |
4774 | } else if (rule->modify_seqno > seqno) { | |
4775 | update = NXFMF_MODIFY; | |
4776 | } else { | |
4777 | return; | |
4778 | } | |
4779 | ||
4780 | if (!(m->flags & update)) { | |
4781 | return; | |
4782 | } | |
4783 | } else { | |
4784 | update = NXFMF_INITIAL; | |
4785 | } | |
4786 | ||
4787 | if (!rule->monitor_flags) { | |
a8e547c1 | 4788 | rule_collection_add(rules, rule); |
2b07c8b1 BP |
4789 | } |
4790 | rule->monitor_flags |= update | (m->flags & NXFMF_ACTIONS); | |
4791 | } | |
4792 | ||
4793 | static void | |
4794 | ofproto_collect_ofmonitor_refresh_rules(const struct ofmonitor *m, | |
4795 | uint64_t seqno, | |
a8e547c1 | 4796 | struct rule_collection *rules) |
15aaf599 | 4797 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
4798 | { |
4799 | const struct ofproto *ofproto = ofconn_get_ofproto(m->ofconn); | |
4800 | const struct ofoperation *op; | |
4801 | const struct oftable *table; | |
81a76618 | 4802 | struct cls_rule target; |
2b07c8b1 | 4803 | |
5cb7a798 | 4804 | cls_rule_init_from_minimatch(&target, &m->match, 0); |
2b07c8b1 BP |
4805 | FOR_EACH_MATCHING_TABLE (table, m->table_id, ofproto) { |
4806 | struct cls_cursor cursor; | |
4807 | struct rule *rule; | |
4808 | ||
06f81620 | 4809 | fat_rwlock_rdlock(&table->cls.rwlock); |
81a76618 | 4810 | cls_cursor_init(&cursor, &table->cls, &target); |
2b07c8b1 | 4811 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { |
cb22974d | 4812 | ovs_assert(!rule->pending); /* XXX */ |
2b07c8b1 BP |
4813 | ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules); |
4814 | } | |
06f81620 | 4815 | fat_rwlock_unlock(&table->cls.rwlock); |
2b07c8b1 BP |
4816 | } |
4817 | ||
4818 | HMAP_FOR_EACH (op, hmap_node, &ofproto->deletions) { | |
4819 | struct rule *rule = op->rule; | |
4820 | ||
4821 | if (((m->table_id == 0xff | |
4822 | ? !(ofproto->tables[rule->table_id].flags & OFTABLE_HIDDEN) | |
4823 | : m->table_id == rule->table_id)) | |
81a76618 | 4824 | && cls_rule_is_loose_match(&rule->cr, &target.match)) { |
2b07c8b1 BP |
4825 | ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules); |
4826 | } | |
4827 | } | |
48d28ac1 | 4828 | cls_rule_destroy(&target); |
2b07c8b1 BP |
4829 | } |
4830 | ||
4831 | static void | |
4832 | ofproto_collect_ofmonitor_initial_rules(struct ofmonitor *m, | |
a8e547c1 | 4833 | struct rule_collection *rules) |
15aaf599 | 4834 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
4835 | { |
4836 | if (m->flags & NXFMF_INITIAL) { | |
4837 | ofproto_collect_ofmonitor_refresh_rules(m, 0, rules); | |
4838 | } | |
4839 | } | |
4840 | ||
4841 | void | |
4842 | ofmonitor_collect_resume_rules(struct ofmonitor *m, | |
a8e547c1 | 4843 | uint64_t seqno, struct rule_collection *rules) |
15aaf599 | 4844 | OVS_REQUIRES(ofproto_mutex) |
2b07c8b1 BP |
4845 | { |
4846 | ofproto_collect_ofmonitor_refresh_rules(m, seqno, rules); | |
4847 | } | |
4848 | ||
4849 | static enum ofperr | |
982697a4 | 4850 | handle_flow_monitor_request(struct ofconn *ofconn, const struct ofp_header *oh) |
15aaf599 | 4851 | OVS_EXCLUDED(ofproto_mutex) |
2b07c8b1 BP |
4852 | { |
4853 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
4854 | struct ofmonitor **monitors; | |
4855 | size_t n_monitors, allocated_monitors; | |
a8e547c1 | 4856 | struct rule_collection rules; |
2b07c8b1 BP |
4857 | struct list replies; |
4858 | enum ofperr error; | |
2b07c8b1 BP |
4859 | struct ofpbuf b; |
4860 | size_t i; | |
4861 | ||
4862 | error = 0; | |
982697a4 | 4863 | ofpbuf_use_const(&b, oh, ntohs(oh->length)); |
2b07c8b1 BP |
4864 | monitors = NULL; |
4865 | n_monitors = allocated_monitors = 0; | |
15aaf599 BP |
4866 | |
4867 | ovs_mutex_lock(&ofproto_mutex); | |
2b07c8b1 BP |
4868 | for (;;) { |
4869 | struct ofputil_flow_monitor_request request; | |
4870 | struct ofmonitor *m; | |
4871 | int retval; | |
4872 | ||
4873 | retval = ofputil_decode_flow_monitor_request(&request, &b); | |
4874 | if (retval == EOF) { | |
4875 | break; | |
4876 | } else if (retval) { | |
4877 | error = retval; | |
4878 | goto error; | |
4879 | } | |
4880 | ||
4881 | if (request.table_id != 0xff | |
4882 | && request.table_id >= ofproto->n_tables) { | |
4883 | error = OFPERR_OFPBRC_BAD_TABLE_ID; | |
4884 | goto error; | |
4885 | } | |
4886 | ||
4887 | error = ofmonitor_create(&request, ofconn, &m); | |
4888 | if (error) { | |
4889 | goto error; | |
4890 | } | |
4891 | ||
4892 | if (n_monitors >= allocated_monitors) { | |
4893 | monitors = x2nrealloc(monitors, &allocated_monitors, | |
4894 | sizeof *monitors); | |
4895 | } | |
4896 | monitors[n_monitors++] = m; | |
4897 | } | |
4898 | ||
a8e547c1 | 4899 | rule_collection_init(&rules); |
2b07c8b1 BP |
4900 | for (i = 0; i < n_monitors; i++) { |
4901 | ofproto_collect_ofmonitor_initial_rules(monitors[i], &rules); | |
4902 | } | |
4903 | ||
982697a4 | 4904 | ofpmp_init(&replies, oh); |
2b07c8b1 | 4905 | ofmonitor_compose_refresh_updates(&rules, &replies); |
15aaf599 BP |
4906 | ovs_mutex_unlock(&ofproto_mutex); |
4907 | ||
a8e547c1 BP |
4908 | rule_collection_destroy(&rules); |
4909 | ||
2b07c8b1 | 4910 | ofconn_send_replies(ofconn, &replies); |
2b07c8b1 BP |
4911 | free(monitors); |
4912 | ||
4913 | return 0; | |
4914 | ||
4915 | error: | |
4916 | for (i = 0; i < n_monitors; i++) { | |
4917 | ofmonitor_destroy(monitors[i]); | |
4918 | } | |
4919 | free(monitors); | |
4cd1bc9d BP |
4920 | ovs_mutex_unlock(&ofproto_mutex); |
4921 | ||
2b07c8b1 BP |
4922 | return error; |
4923 | } | |
4924 | ||
4925 | static enum ofperr | |
4926 | handle_flow_monitor_cancel(struct ofconn *ofconn, const struct ofp_header *oh) | |
15aaf599 | 4927 | OVS_EXCLUDED(ofproto_mutex) |
2b07c8b1 BP |
4928 | { |
4929 | struct ofmonitor *m; | |
15aaf599 | 4930 | enum ofperr error; |
2b07c8b1 BP |
4931 | uint32_t id; |
4932 | ||
4933 | id = ofputil_decode_flow_monitor_cancel(oh); | |
15aaf599 BP |
4934 | |
4935 | ovs_mutex_lock(&ofproto_mutex); | |
2b07c8b1 | 4936 | m = ofmonitor_lookup(ofconn, id); |
15aaf599 BP |
4937 | if (m) { |
4938 | ofmonitor_destroy(m); | |
4939 | error = 0; | |
4940 | } else { | |
4941 | error = OFPERR_NXBRC_FM_BAD_ID; | |
2b07c8b1 | 4942 | } |
15aaf599 | 4943 | ovs_mutex_unlock(&ofproto_mutex); |
2b07c8b1 | 4944 | |
15aaf599 | 4945 | return error; |
2b07c8b1 BP |
4946 | } |
4947 | ||
9cae45dc JR |
4948 | /* Meters implementation. |
4949 | * | |
4950 | * Meter table entry, indexed by the OpenFlow meter_id. | |
4951 | * These are always dynamically allocated to allocate enough space for | |
4952 | * the bands. | |
4953 | * 'created' is used to compute the duration for meter stats. | |
4954 | * 'list rules' is needed so that we can delete the dependent rules when the | |
4955 | * meter table entry is deleted. | |
4956 | * 'provider_meter_id' is for the provider's private use. | |
4957 | */ | |
4958 | struct meter { | |
4959 | long long int created; /* Time created. */ | |
4960 | struct list rules; /* List of "struct rule_dpif"s. */ | |
4961 | ofproto_meter_id provider_meter_id; | |
4962 | uint16_t flags; /* Meter flags. */ | |
4963 | uint16_t n_bands; /* Number of meter bands. */ | |
4964 | struct ofputil_meter_band *bands; | |
4965 | }; | |
4966 | ||
4967 | /* | |
4968 | * This is used in instruction validation at flow set-up time, | |
4969 | * as flows may not use non-existing meters. | |
9cae45dc JR |
4970 | * Return value of UINT32_MAX signifies an invalid meter. |
4971 | */ | |
65efd2ab JR |
4972 | static uint32_t |
4973 | get_provider_meter_id(const struct ofproto *ofproto, uint32_t of_meter_id) | |
9cae45dc JR |
4974 | { |
4975 | if (of_meter_id && of_meter_id <= ofproto->meter_features.max_meters) { | |
4976 | const struct meter *meter = ofproto->meters[of_meter_id]; | |
4977 | if (meter) { | |
4978 | return meter->provider_meter_id.uint32; | |
4979 | } | |
4980 | } | |
4981 | return UINT32_MAX; | |
4982 | } | |
4983 | ||
4984 | static void | |
4985 | meter_update(struct meter *meter, const struct ofputil_meter_config *config) | |
4986 | { | |
4987 | free(meter->bands); | |
4988 | ||
4989 | meter->flags = config->flags; | |
4990 | meter->n_bands = config->n_bands; | |
4991 | meter->bands = xmemdup(config->bands, | |
4992 | config->n_bands * sizeof *meter->bands); | |
4993 | } | |
4994 | ||
4995 | static struct meter * | |
4996 | meter_create(const struct ofputil_meter_config *config, | |
4997 | ofproto_meter_id provider_meter_id) | |
4998 | { | |
4999 | struct meter *meter; | |
5000 | ||
5001 | meter = xzalloc(sizeof *meter); | |
5002 | meter->provider_meter_id = provider_meter_id; | |
5003 | meter->created = time_msec(); | |
5004 | list_init(&meter->rules); | |
5005 | ||
5006 | meter_update(meter, config); | |
5007 | ||
5008 | return meter; | |
5009 | } | |
5010 | ||
6b3f7f02 JR |
5011 | static void |
5012 | meter_delete(struct ofproto *ofproto, uint32_t first, uint32_t last) | |
15aaf599 | 5013 | OVS_REQUIRES(ofproto_mutex) |
6b3f7f02 JR |
5014 | { |
5015 | uint32_t mid; | |
5016 | for (mid = first; mid <= last; ++mid) { | |
5017 | struct meter *meter = ofproto->meters[mid]; | |
5018 | if (meter) { | |
5019 | ofproto->meters[mid] = NULL; | |
5020 | ofproto->ofproto_class->meter_del(ofproto, | |
5021 | meter->provider_meter_id); | |
5022 | free(meter->bands); | |
5023 | free(meter); | |
5024 | } | |
5025 | } | |
5026 | } | |
5027 | ||
9cae45dc JR |
5028 | static enum ofperr |
5029 | handle_add_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm) | |
5030 | { | |
5031 | ofproto_meter_id provider_meter_id = { UINT32_MAX }; | |
5032 | struct meter **meterp = &ofproto->meters[mm->meter.meter_id]; | |
5033 | enum ofperr error; | |
5034 | ||
5035 | if (*meterp) { | |
5036 | return OFPERR_OFPMMFC_METER_EXISTS; | |
5037 | } | |
5038 | ||
5039 | error = ofproto->ofproto_class->meter_set(ofproto, &provider_meter_id, | |
5040 | &mm->meter); | |
5041 | if (!error) { | |
5042 | ovs_assert(provider_meter_id.uint32 != UINT32_MAX); | |
5043 | *meterp = meter_create(&mm->meter, provider_meter_id); | |
5044 | } | |
f0f8c6c2 | 5045 | return error; |
9cae45dc JR |
5046 | } |
5047 | ||
5048 | static enum ofperr | |
5049 | handle_modify_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm) | |
5050 | { | |
5051 | struct meter *meter = ofproto->meters[mm->meter.meter_id]; | |
5052 | enum ofperr error; | |
e555eb7c | 5053 | uint32_t provider_meter_id; |
9cae45dc JR |
5054 | |
5055 | if (!meter) { | |
5056 | return OFPERR_OFPMMFC_UNKNOWN_METER; | |
5057 | } | |
5058 | ||
e555eb7c | 5059 | provider_meter_id = meter->provider_meter_id.uint32; |
9cae45dc JR |
5060 | error = ofproto->ofproto_class->meter_set(ofproto, |
5061 | &meter->provider_meter_id, | |
5062 | &mm->meter); | |
e555eb7c | 5063 | ovs_assert(meter->provider_meter_id.uint32 == provider_meter_id); |
9cae45dc JR |
5064 | if (!error) { |
5065 | meter_update(meter, &mm->meter); | |
5066 | } | |
5067 | return error; | |
5068 | } | |
5069 | ||
5070 | static enum ofperr | |
5071 | handle_delete_meter(struct ofconn *ofconn, const struct ofp_header *oh, | |
5072 | struct ofputil_meter_mod *mm) | |
15aaf599 | 5073 | OVS_EXCLUDED(ofproto_mutex) |
9cae45dc JR |
5074 | { |
5075 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5076 | uint32_t meter_id = mm->meter.meter_id; | |
a8e547c1 BP |
5077 | struct rule_collection rules; |
5078 | enum ofperr error = 0; | |
9cae45dc | 5079 | uint32_t first, last; |
9cae45dc JR |
5080 | |
5081 | if (meter_id == OFPM13_ALL) { | |
5082 | first = 1; | |
5083 | last = ofproto->meter_features.max_meters; | |
5084 | } else { | |
5085 | if (!meter_id || meter_id > ofproto->meter_features.max_meters) { | |
5086 | return 0; | |
5087 | } | |
5088 | first = last = meter_id; | |
5089 | } | |
5090 | ||
5091 | /* First delete the rules that use this meter. If any of those rules are | |
5092 | * currently being modified, postpone the whole operation until later. */ | |
a8e547c1 | 5093 | rule_collection_init(&rules); |
15aaf599 | 5094 | ovs_mutex_lock(&ofproto_mutex); |
9cae45dc JR |
5095 | for (meter_id = first; meter_id <= last; ++meter_id) { |
5096 | struct meter *meter = ofproto->meters[meter_id]; | |
5097 | if (meter && !list_is_empty(&meter->rules)) { | |
5098 | struct rule *rule; | |
5099 | ||
5100 | LIST_FOR_EACH (rule, meter_list_node, &meter->rules) { | |
5101 | if (rule->pending) { | |
a8e547c1 BP |
5102 | error = OFPROTO_POSTPONE; |
5103 | goto exit; | |
9cae45dc | 5104 | } |
a8e547c1 | 5105 | rule_collection_add(&rules, rule); |
9cae45dc JR |
5106 | } |
5107 | } | |
5108 | } | |
a8e547c1 | 5109 | if (rules.n > 0) { |
9cae45dc JR |
5110 | delete_flows__(ofproto, ofconn, oh, &rules, OFPRR_METER_DELETE); |
5111 | } | |
5112 | ||
5113 | /* Delete the meters. */ | |
6b3f7f02 | 5114 | meter_delete(ofproto, first, last); |
9cae45dc | 5115 | |
a8e547c1 | 5116 | exit: |
15aaf599 | 5117 | ovs_mutex_unlock(&ofproto_mutex); |
a8e547c1 BP |
5118 | rule_collection_destroy(&rules); |
5119 | ||
5120 | return error; | |
9cae45dc JR |
5121 | } |
5122 | ||
5123 | static enum ofperr | |
5124 | handle_meter_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
5125 | { | |
5126 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5127 | struct ofputil_meter_mod mm; | |
5128 | uint64_t bands_stub[256 / 8]; | |
5129 | struct ofpbuf bands; | |
5130 | uint32_t meter_id; | |
5131 | enum ofperr error; | |
5132 | ||
5133 | error = reject_slave_controller(ofconn); | |
5134 | if (error) { | |
5135 | return error; | |
5136 | } | |
5137 | ||
5138 | ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub); | |
5139 | ||
5140 | error = ofputil_decode_meter_mod(oh, &mm, &bands); | |
5141 | if (error) { | |
5142 | goto exit_free_bands; | |
5143 | } | |
5144 | ||
5145 | meter_id = mm.meter.meter_id; | |
5146 | ||
5147 | if (mm.command != OFPMC13_DELETE) { | |
5148 | /* Fails also when meters are not implemented by the provider. */ | |
b31e8700 | 5149 | if (meter_id == 0 || meter_id > OFPM13_MAX) { |
9cae45dc JR |
5150 | error = OFPERR_OFPMMFC_INVALID_METER; |
5151 | goto exit_free_bands; | |
b31e8700 JR |
5152 | } else if (meter_id > ofproto->meter_features.max_meters) { |
5153 | error = OFPERR_OFPMMFC_OUT_OF_METERS; | |
5154 | goto exit_free_bands; | |
9cae45dc JR |
5155 | } |
5156 | if (mm.meter.n_bands > ofproto->meter_features.max_bands) { | |
5157 | error = OFPERR_OFPMMFC_OUT_OF_BANDS; | |
5158 | goto exit_free_bands; | |
5159 | } | |
5160 | } | |
5161 | ||
5162 | switch (mm.command) { | |
5163 | case OFPMC13_ADD: | |
5164 | error = handle_add_meter(ofproto, &mm); | |
5165 | break; | |
5166 | ||
5167 | case OFPMC13_MODIFY: | |
5168 | error = handle_modify_meter(ofproto, &mm); | |
5169 | break; | |
5170 | ||
5171 | case OFPMC13_DELETE: | |
5172 | error = handle_delete_meter(ofconn, oh, &mm); | |
5173 | break; | |
5174 | ||
5175 | default: | |
5176 | error = OFPERR_OFPMMFC_BAD_COMMAND; | |
5177 | break; | |
5178 | } | |
5179 | ||
5180 | exit_free_bands: | |
5181 | ofpbuf_uninit(&bands); | |
5182 | return error; | |
5183 | } | |
5184 | ||
5185 | static enum ofperr | |
5186 | handle_meter_features_request(struct ofconn *ofconn, | |
5187 | const struct ofp_header *request) | |
5188 | { | |
5189 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5190 | struct ofputil_meter_features features; | |
5191 | struct ofpbuf *b; | |
5192 | ||
5193 | if (ofproto->ofproto_class->meter_get_features) { | |
5194 | ofproto->ofproto_class->meter_get_features(ofproto, &features); | |
5195 | } else { | |
5196 | memset(&features, 0, sizeof features); | |
5197 | } | |
5198 | b = ofputil_encode_meter_features_reply(&features, request); | |
5199 | ||
5200 | ofconn_send_reply(ofconn, b); | |
5201 | return 0; | |
5202 | } | |
5203 | ||
5204 | static enum ofperr | |
5205 | handle_meter_request(struct ofconn *ofconn, const struct ofp_header *request, | |
5206 | enum ofptype type) | |
5207 | { | |
5208 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5209 | struct list replies; | |
5210 | uint64_t bands_stub[256 / 8]; | |
5211 | struct ofpbuf bands; | |
5212 | uint32_t meter_id, first, last; | |
5213 | ||
5214 | ofputil_decode_meter_request(request, &meter_id); | |
5215 | ||
5216 | if (meter_id == OFPM13_ALL) { | |
5217 | first = 1; | |
5218 | last = ofproto->meter_features.max_meters; | |
5219 | } else { | |
5220 | if (!meter_id || meter_id > ofproto->meter_features.max_meters || | |
5221 | !ofproto->meters[meter_id]) { | |
5222 | return OFPERR_OFPMMFC_UNKNOWN_METER; | |
5223 | } | |
5224 | first = last = meter_id; | |
5225 | } | |
5226 | ||
5227 | ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub); | |
5228 | ofpmp_init(&replies, request); | |
5229 | ||
5230 | for (meter_id = first; meter_id <= last; ++meter_id) { | |
5231 | struct meter *meter = ofproto->meters[meter_id]; | |
5232 | if (!meter) { | |
5233 | continue; /* Skip non-existing meters. */ | |
5234 | } | |
261bd854 | 5235 | if (type == OFPTYPE_METER_STATS_REQUEST) { |
9cae45dc JR |
5236 | struct ofputil_meter_stats stats; |
5237 | ||
5238 | stats.meter_id = meter_id; | |
5239 | ||
5240 | /* Provider sets the packet and byte counts, we do the rest. */ | |
5241 | stats.flow_count = list_size(&meter->rules); | |
5242 | calc_duration(meter->created, time_msec(), | |
5243 | &stats.duration_sec, &stats.duration_nsec); | |
5244 | stats.n_bands = meter->n_bands; | |
5245 | ofpbuf_clear(&bands); | |
5246 | stats.bands | |
5247 | = ofpbuf_put_uninit(&bands, | |
5248 | meter->n_bands * sizeof *stats.bands); | |
5249 | ||
5250 | if (!ofproto->ofproto_class->meter_get(ofproto, | |
5251 | meter->provider_meter_id, | |
5252 | &stats)) { | |
5253 | ofputil_append_meter_stats(&replies, &stats); | |
5254 | } | |
5255 | } else { /* type == OFPTYPE_METER_CONFIG_REQUEST */ | |
5256 | struct ofputil_meter_config config; | |
5257 | ||
5258 | config.meter_id = meter_id; | |
5259 | config.flags = meter->flags; | |
5260 | config.n_bands = meter->n_bands; | |
5261 | config.bands = meter->bands; | |
5262 | ofputil_append_meter_config(&replies, &config); | |
5263 | } | |
5264 | } | |
5265 | ||
5266 | ofconn_send_replies(ofconn, &replies); | |
5267 | ofpbuf_uninit(&bands); | |
5268 | return 0; | |
5269 | } | |
5270 | ||
7395c052 NZ |
5271 | bool |
5272 | ofproto_group_lookup(const struct ofproto *ofproto, uint32_t group_id, | |
5273 | struct ofgroup **group) | |
5274 | OVS_TRY_RDLOCK(true, (*group)->rwlock) | |
5275 | { | |
5276 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
5277 | HMAP_FOR_EACH_IN_BUCKET (*group, hmap_node, | |
5278 | hash_int(group_id, 0), &ofproto->groups) { | |
5279 | if ((*group)->group_id == group_id) { | |
5280 | ovs_rwlock_rdlock(&(*group)->rwlock); | |
5281 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5282 | return true; | |
5283 | } | |
5284 | } | |
5285 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5286 | return false; | |
5287 | } | |
5288 | ||
5289 | void | |
5290 | ofproto_group_release(struct ofgroup *group) | |
5291 | OVS_RELEASES(group->rwlock) | |
5292 | { | |
5293 | ovs_rwlock_unlock(&group->rwlock); | |
5294 | } | |
5295 | ||
5296 | static bool | |
5297 | ofproto_group_write_lookup(const struct ofproto *ofproto, uint32_t group_id, | |
5298 | struct ofgroup **group) | |
5299 | OVS_TRY_WRLOCK(true, ofproto->groups_rwlock) | |
5300 | OVS_TRY_WRLOCK(true, (*group)->rwlock) | |
5301 | { | |
5302 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
5303 | HMAP_FOR_EACH_IN_BUCKET (*group, hmap_node, | |
5304 | hash_int(group_id, 0), &ofproto->groups) { | |
5305 | if ((*group)->group_id == group_id) { | |
5306 | ovs_rwlock_wrlock(&(*group)->rwlock); | |
5307 | return true; | |
5308 | } | |
5309 | } | |
5310 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5311 | return false; | |
5312 | } | |
5313 | ||
5314 | static bool | |
7e9f8266 | 5315 | ofproto_group_exists__(const struct ofproto *ofproto, uint32_t group_id) |
7395c052 NZ |
5316 | OVS_REQ_RDLOCK(ofproto->groups_rwlock) |
5317 | { | |
5318 | struct ofgroup *grp; | |
5319 | ||
5320 | HMAP_FOR_EACH_IN_BUCKET (grp, hmap_node, | |
5321 | hash_int(group_id, 0), &ofproto->groups) { | |
5322 | if (grp->group_id == group_id) { | |
5323 | return true; | |
5324 | } | |
5325 | } | |
5326 | return false; | |
5327 | } | |
5328 | ||
7e9f8266 BP |
5329 | static bool |
5330 | ofproto_group_exists(const struct ofproto *ofproto, uint32_t group_id) | |
5331 | OVS_EXCLUDED(ofproto->groups_rwlock) | |
5332 | { | |
5333 | bool exists; | |
5334 | ||
5335 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
5336 | exists = ofproto_group_exists__(ofproto, group_id); | |
5337 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5338 | ||
5339 | return exists; | |
5340 | } | |
5341 | ||
732feb93 SH |
5342 | static uint32_t |
5343 | group_get_ref_count(struct ofgroup *group) | |
5344 | OVS_EXCLUDED(ofproto_mutex) | |
5345 | { | |
5346 | struct ofproto *ofproto = group->ofproto; | |
5347 | struct rule_criteria criteria; | |
5348 | struct rule_collection rules; | |
5349 | struct match match; | |
5350 | enum ofperr error; | |
5351 | uint32_t count; | |
5352 | ||
5353 | match_init_catchall(&match); | |
5354 | rule_criteria_init(&criteria, 0xff, &match, 0, htonll(0), htonll(0), | |
5355 | OFPP_ANY, group->group_id); | |
5356 | ovs_mutex_lock(&ofproto_mutex); | |
5357 | error = collect_rules_loose(ofproto, &criteria, &rules); | |
5358 | ovs_mutex_unlock(&ofproto_mutex); | |
5359 | rule_criteria_destroy(&criteria); | |
5360 | ||
5361 | count = !error && rules.n < UINT32_MAX ? rules.n : UINT32_MAX; | |
5362 | ||
5363 | rule_collection_destroy(&rules); | |
5364 | return count; | |
5365 | } | |
5366 | ||
7395c052 NZ |
5367 | static void |
5368 | append_group_stats(struct ofgroup *group, struct list *replies) | |
5369 | OVS_REQ_RDLOCK(group->rwlock) | |
5370 | { | |
5371 | struct ofputil_group_stats ogs; | |
5372 | struct ofproto *ofproto = group->ofproto; | |
5373 | long long int now = time_msec(); | |
5374 | int error; | |
5375 | ||
646b2a9c SH |
5376 | ogs.bucket_stats = xmalloc(group->n_buckets * sizeof *ogs.bucket_stats); |
5377 | ||
732feb93 SH |
5378 | /* Provider sets the packet and byte counts, we do the rest. */ |
5379 | ogs.ref_count = group_get_ref_count(group); | |
5380 | ogs.n_buckets = group->n_buckets; | |
5381 | ||
7395c052 NZ |
5382 | error = (ofproto->ofproto_class->group_get_stats |
5383 | ? ofproto->ofproto_class->group_get_stats(group, &ogs) | |
5384 | : EOPNOTSUPP); | |
5385 | if (error) { | |
7395c052 NZ |
5386 | ogs.packet_count = UINT64_MAX; |
5387 | ogs.byte_count = UINT64_MAX; | |
7395c052 NZ |
5388 | memset(ogs.bucket_stats, 0xff, |
5389 | ogs.n_buckets * sizeof *ogs.bucket_stats); | |
5390 | } | |
5391 | ||
5392 | ogs.group_id = group->group_id; | |
5393 | calc_duration(group->created, now, &ogs.duration_sec, &ogs.duration_nsec); | |
5394 | ||
5395 | ofputil_append_group_stats(replies, &ogs); | |
646b2a9c SH |
5396 | |
5397 | free(ogs.bucket_stats); | |
7395c052 NZ |
5398 | } |
5399 | ||
5400 | static enum ofperr | |
5401 | handle_group_stats_request(struct ofconn *ofconn, | |
5402 | const struct ofp_header *request) | |
5403 | { | |
5404 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5405 | struct list replies; | |
5406 | enum ofperr error; | |
5407 | struct ofgroup *group; | |
5408 | uint32_t group_id; | |
5409 | ||
5410 | error = ofputil_decode_group_stats_request(request, &group_id); | |
5411 | if (error) { | |
5412 | return error; | |
5413 | } | |
5414 | ||
5415 | ofpmp_init(&replies, request); | |
5416 | ||
5417 | if (group_id == OFPG_ALL) { | |
5418 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
5419 | HMAP_FOR_EACH (group, hmap_node, &ofproto->groups) { | |
5420 | ovs_rwlock_rdlock(&group->rwlock); | |
5421 | append_group_stats(group, &replies); | |
5422 | ovs_rwlock_unlock(&group->rwlock); | |
5423 | } | |
5424 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5425 | } else { | |
5426 | if (ofproto_group_lookup(ofproto, group_id, &group)) { | |
5427 | append_group_stats(group, &replies); | |
5428 | ofproto_group_release(group); | |
5429 | } | |
5430 | } | |
5431 | ||
5432 | ofconn_send_replies(ofconn, &replies); | |
5433 | ||
5434 | return 0; | |
5435 | } | |
5436 | ||
5437 | static enum ofperr | |
5438 | handle_group_desc_stats_request(struct ofconn *ofconn, | |
5439 | const struct ofp_header *request) | |
5440 | { | |
5441 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5442 | struct list replies; | |
5443 | struct ofputil_group_desc gds; | |
5444 | struct ofgroup *group; | |
5445 | ||
5446 | ofpmp_init(&replies, request); | |
5447 | ||
5448 | ovs_rwlock_rdlock(&ofproto->groups_rwlock); | |
5449 | HMAP_FOR_EACH (group, hmap_node, &ofproto->groups) { | |
5450 | gds.group_id = group->group_id; | |
5451 | gds.type = group->type; | |
5452 | ofputil_append_group_desc_reply(&gds, &group->buckets, &replies); | |
5453 | } | |
5454 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5455 | ||
5456 | ofconn_send_replies(ofconn, &replies); | |
5457 | ||
5458 | return 0; | |
5459 | } | |
5460 | ||
5461 | static enum ofperr | |
5462 | handle_group_features_stats_request(struct ofconn *ofconn, | |
5463 | const struct ofp_header *request) | |
5464 | { | |
5465 | struct ofproto *p = ofconn_get_ofproto(ofconn); | |
5466 | struct ofpbuf *msg; | |
5467 | ||
5468 | msg = ofputil_encode_group_features_reply(&p->ogf, request); | |
5469 | if (msg) { | |
5470 | ofconn_send_reply(ofconn, msg); | |
5471 | } | |
5472 | ||
5473 | return 0; | |
5474 | } | |
5475 | ||
e8f9a7bb VG |
5476 | static enum ofperr |
5477 | handle_queue_get_config_request(struct ofconn *ofconn, | |
5478 | const struct ofp_header *oh) | |
5479 | { | |
5480 | struct ofproto *p = ofconn_get_ofproto(ofconn); | |
5481 | struct netdev_queue_dump queue_dump; | |
5482 | struct ofport *ofport; | |
5483 | unsigned int queue_id; | |
5484 | struct ofpbuf *reply; | |
5485 | struct smap details; | |
5486 | ofp_port_t request; | |
5487 | enum ofperr error; | |
5488 | ||
5489 | error = ofputil_decode_queue_get_config_request(oh, &request); | |
5490 | if (error) { | |
5491 | return error; | |
5492 | } | |
5493 | ||
5494 | ofport = ofproto_get_port(p, request); | |
5495 | if (!ofport) { | |
5496 | return OFPERR_OFPQOFC_BAD_PORT; | |
5497 | } | |
5498 | ||
5499 | reply = ofputil_encode_queue_get_config_reply(oh); | |
5500 | ||
5501 | smap_init(&details); | |
5502 | NETDEV_QUEUE_FOR_EACH (&queue_id, &details, &queue_dump, ofport->netdev) { | |
5503 | struct ofputil_queue_config queue; | |
5504 | ||
5505 | /* None of the existing queues have compatible properties, so we | |
5506 | * hard-code omitting min_rate and max_rate. */ | |
5507 | queue.queue_id = queue_id; | |
5508 | queue.min_rate = UINT16_MAX; | |
5509 | queue.max_rate = UINT16_MAX; | |
5510 | ofputil_append_queue_get_config_reply(reply, &queue); | |
5511 | } | |
5512 | smap_destroy(&details); | |
5513 | ||
5514 | ofconn_send_reply(ofconn, reply); | |
5515 | ||
5516 | return 0; | |
5517 | } | |
5518 | ||
7395c052 NZ |
5519 | /* Implements OFPGC11_ADD |
5520 | * in which no matching flow already exists in the flow table. | |
5521 | * | |
5522 | * Adds the flow specified by 'ofm', which is followed by 'n_actions' | |
5523 | * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow | |
5524 | * error code on failure, or OFPROTO_POSTPONE if the operation cannot be | |
5525 | * initiated now but may be retried later. | |
5526 | * | |
5527 | * Upon successful return, takes ownership of 'fm->ofpacts'. On failure, | |
5528 | * ownership remains with the caller. | |
5529 | * | |
5530 | * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id, | |
5531 | * if any. */ | |
5532 | static enum ofperr | |
5533 | add_group(struct ofproto *ofproto, struct ofputil_group_mod *gm) | |
5534 | { | |
5535 | struct ofgroup *ofgroup; | |
5536 | enum ofperr error; | |
5537 | ||
5538 | if (gm->group_id > OFPG_MAX) { | |
5539 | return OFPERR_OFPGMFC_INVALID_GROUP; | |
5540 | } | |
5541 | if (gm->type > OFPGT11_FF) { | |
5542 | return OFPERR_OFPGMFC_BAD_TYPE; | |
5543 | } | |
5544 | ||
5545 | /* Allocate new group and initialize it. */ | |
5546 | ofgroup = ofproto->ofproto_class->group_alloc(); | |
5547 | if (!ofgroup) { | |
5548 | VLOG_WARN_RL(&rl, "%s: failed to create group", ofproto->name); | |
5549 | return OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
5550 | } | |
5551 | ||
5552 | ovs_rwlock_init(&ofgroup->rwlock); | |
5553 | ofgroup->ofproto = ofproto; | |
5554 | ofgroup->group_id = gm->group_id; | |
5555 | ofgroup->type = gm->type; | |
5556 | ofgroup->created = ofgroup->modified = time_msec(); | |
5557 | ||
5558 | list_move(&ofgroup->buckets, &gm->buckets); | |
5559 | ofgroup->n_buckets = list_size(&ofgroup->buckets); | |
5560 | ||
5561 | /* Construct called BEFORE any locks are held. */ | |
5562 | error = ofproto->ofproto_class->group_construct(ofgroup); | |
5563 | if (error) { | |
5564 | goto free_out; | |
5565 | } | |
5566 | ||
5567 | /* We wrlock as late as possible to minimize the time we jam any other | |
5568 | * threads: No visible state changes before acquiring the lock. */ | |
5569 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
5570 | ||
5571 | if (ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) { | |
5572 | error = OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
5573 | goto unlock_out; | |
5574 | } | |
5575 | ||
7e9f8266 | 5576 | if (ofproto_group_exists__(ofproto, gm->group_id)) { |
7395c052 NZ |
5577 | error = OFPERR_OFPGMFC_GROUP_EXISTS; |
5578 | goto unlock_out; | |
5579 | } | |
5580 | ||
5581 | if (!error) { | |
5582 | /* Insert new group. */ | |
5583 | hmap_insert(&ofproto->groups, &ofgroup->hmap_node, | |
5584 | hash_int(ofgroup->group_id, 0)); | |
5585 | ofproto->n_groups[ofgroup->type]++; | |
5586 | ||
5587 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5588 | return error; | |
5589 | } | |
5590 | ||
5591 | unlock_out: | |
5592 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5593 | ofproto->ofproto_class->group_destruct(ofgroup); | |
5594 | free_out: | |
5595 | ofputil_bucket_list_destroy(&ofgroup->buckets); | |
5596 | ofproto->ofproto_class->group_dealloc(ofgroup); | |
5597 | ||
5598 | return error; | |
5599 | } | |
5600 | ||
5601 | /* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on | |
5602 | * failure. | |
5603 | * | |
5604 | * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id, | |
5605 | * if any. */ | |
5606 | static enum ofperr | |
5607 | modify_group(struct ofproto *ofproto, struct ofputil_group_mod *gm) | |
5608 | { | |
5609 | struct ofgroup *ofgroup; | |
5610 | struct ofgroup *victim; | |
5611 | enum ofperr error; | |
5612 | ||
5613 | if (gm->group_id > OFPG_MAX) { | |
5614 | return OFPERR_OFPGMFC_INVALID_GROUP; | |
5615 | } | |
5616 | ||
5617 | if (gm->type > OFPGT11_FF) { | |
5618 | return OFPERR_OFPGMFC_BAD_TYPE; | |
5619 | } | |
5620 | ||
5621 | victim = ofproto->ofproto_class->group_alloc(); | |
5622 | if (!victim) { | |
5623 | VLOG_WARN_RL(&rl, "%s: failed to allocate group", ofproto->name); | |
5624 | return OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
5625 | } | |
5626 | ||
5627 | if (!ofproto_group_write_lookup(ofproto, gm->group_id, &ofgroup)) { | |
5628 | error = OFPERR_OFPGMFC_UNKNOWN_GROUP; | |
5629 | goto free_out; | |
5630 | } | |
5631 | /* Both group's and its container's write locks held now. | |
5632 | * Also, n_groups[] is protected by ofproto->groups_rwlock. */ | |
5633 | if (ofgroup->type != gm->type | |
5634 | && ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) { | |
5635 | error = OFPERR_OFPGMFC_OUT_OF_GROUPS; | |
5636 | goto unlock_out; | |
5637 | } | |
5638 | ||
5639 | *victim = *ofgroup; | |
5640 | list_move(&victim->buckets, &ofgroup->buckets); | |
5641 | ||
5642 | ofgroup->type = gm->type; | |
5643 | list_move(&ofgroup->buckets, &gm->buckets); | |
5644 | ofgroup->n_buckets = list_size(&ofgroup->buckets); | |
5645 | ||
5646 | error = ofproto->ofproto_class->group_modify(ofgroup, victim); | |
5647 | if (!error) { | |
5648 | ofputil_bucket_list_destroy(&victim->buckets); | |
5649 | ofproto->n_groups[victim->type]--; | |
5650 | ofproto->n_groups[ofgroup->type]++; | |
5651 | ofgroup->modified = time_msec(); | |
5652 | } else { | |
5653 | ofputil_bucket_list_destroy(&ofgroup->buckets); | |
5654 | ||
5655 | *ofgroup = *victim; | |
5656 | list_move(&ofgroup->buckets, &victim->buckets); | |
5657 | } | |
5658 | ||
5659 | unlock_out: | |
5660 | ovs_rwlock_unlock(&ofgroup->rwlock); | |
5661 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5662 | free_out: | |
5663 | ofproto->ofproto_class->group_dealloc(victim); | |
5664 | return error; | |
5665 | } | |
5666 | ||
5667 | static void | |
5668 | delete_group__(struct ofproto *ofproto, struct ofgroup *ofgroup) | |
5669 | OVS_RELEASES(ofproto->groups_rwlock) | |
5670 | { | |
276f6518 SH |
5671 | struct match match; |
5672 | struct ofputil_flow_mod fm; | |
5673 | ||
5674 | /* Delete all flow entries containing this group in a group action */ | |
5675 | match_init_catchall(&match); | |
5676 | flow_mod_init(&fm, &match, 0, NULL, 0, OFPFC_DELETE); | |
5677 | fm.out_group = ofgroup->group_id; | |
5678 | handle_flow_mod__(ofproto, NULL, &fm, NULL); | |
5679 | ||
7395c052 NZ |
5680 | /* Must wait until existing readers are done, |
5681 | * while holding the container's write lock at the same time. */ | |
5682 | ovs_rwlock_wrlock(&ofgroup->rwlock); | |
5683 | hmap_remove(&ofproto->groups, &ofgroup->hmap_node); | |
5684 | /* No-one can find this group any more. */ | |
5685 | ofproto->n_groups[ofgroup->type]--; | |
5686 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5687 | ||
5688 | ofproto->ofproto_class->group_destruct(ofgroup); | |
5689 | ofputil_bucket_list_destroy(&ofgroup->buckets); | |
5690 | ovs_rwlock_unlock(&ofgroup->rwlock); | |
5691 | ovs_rwlock_destroy(&ofgroup->rwlock); | |
5692 | ofproto->ofproto_class->group_dealloc(ofgroup); | |
5693 | } | |
5694 | ||
5695 | /* Implements OFPGC_DELETE. */ | |
5696 | static void | |
5697 | delete_group(struct ofproto *ofproto, uint32_t group_id) | |
5698 | { | |
5699 | struct ofgroup *ofgroup; | |
5700 | ||
5701 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
5702 | if (group_id == OFPG_ALL) { | |
5703 | for (;;) { | |
5704 | struct hmap_node *node = hmap_first(&ofproto->groups); | |
5705 | if (!node) { | |
5706 | break; | |
5707 | } | |
5708 | ofgroup = CONTAINER_OF(node, struct ofgroup, hmap_node); | |
5709 | delete_group__(ofproto, ofgroup); | |
5710 | /* Lock for each node separately, so that we will not jam the | |
5711 | * other threads for too long time. */ | |
5712 | ovs_rwlock_wrlock(&ofproto->groups_rwlock); | |
5713 | } | |
5714 | } else { | |
5715 | HMAP_FOR_EACH_IN_BUCKET (ofgroup, hmap_node, | |
5716 | hash_int(group_id, 0), &ofproto->groups) { | |
5717 | if (ofgroup->group_id == group_id) { | |
5718 | delete_group__(ofproto, ofgroup); | |
5719 | return; | |
5720 | } | |
5721 | } | |
5722 | } | |
5723 | ovs_rwlock_unlock(&ofproto->groups_rwlock); | |
5724 | } | |
5725 | ||
5726 | static enum ofperr | |
5727 | handle_group_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
5728 | { | |
5729 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); | |
5730 | struct ofputil_group_mod gm; | |
5731 | enum ofperr error; | |
5732 | ||
5733 | error = reject_slave_controller(ofconn); | |
5734 | if (error) { | |
5735 | return error; | |
5736 | } | |
5737 | ||
5738 | error = ofputil_decode_group_mod(oh, &gm); | |
5739 | if (error) { | |
5740 | return error; | |
5741 | } | |
5742 | ||
5743 | switch (gm.command) { | |
5744 | case OFPGC11_ADD: | |
5745 | return add_group(ofproto, &gm); | |
5746 | ||
5747 | case OFPGC11_MODIFY: | |
5748 | return modify_group(ofproto, &gm); | |
5749 | ||
5750 | case OFPGC11_DELETE: | |
5751 | delete_group(ofproto, gm.group_id); | |
5752 | return 0; | |
5753 | ||
5754 | default: | |
5755 | if (gm.command > OFPGC11_DELETE) { | |
5756 | VLOG_WARN_RL(&rl, "%s: Invalid group_mod command type %d", | |
5757 | ofproto->name, gm.command); | |
5758 | } | |
5759 | return OFPERR_OFPGMFC_BAD_COMMAND; | |
5760 | } | |
5761 | } | |
5762 | ||
67761761 SH |
5763 | static enum ofperr |
5764 | table_mod(struct ofproto *ofproto, const struct ofputil_table_mod *tm) | |
5765 | { | |
5766 | /* XXX Reject all configurations because none are currently supported */ | |
5767 | return OFPERR_OFPTMFC_BAD_CONFIG; | |
5768 | ||
5769 | if (tm->table_id == OFPTT_ALL) { | |
5770 | int i; | |
5771 | for (i = 0; i < ofproto->n_tables; i++) { | |
5772 | atomic_store(&ofproto->tables[i].config, | |
5773 | (unsigned int)tm->config); | |
5774 | } | |
5775 | } else if (!check_table_id(ofproto, tm->table_id)) { | |
5776 | return OFPERR_OFPTMFC_BAD_TABLE; | |
5777 | } else { | |
5778 | atomic_store(&ofproto->tables[tm->table_id].config, | |
5779 | (unsigned int)tm->config); | |
5780 | } | |
5781 | ||
5782 | return 0; | |
5783 | } | |
5784 | ||
918f2b82 AZ |
5785 | static enum ofperr |
5786 | handle_table_mod(struct ofconn *ofconn, const struct ofp_header *oh) | |
5787 | { | |
67761761 | 5788 | struct ofproto *ofproto = ofconn_get_ofproto(ofconn); |
918f2b82 AZ |
5789 | struct ofputil_table_mod tm; |
5790 | enum ofperr error; | |
5791 | ||
5792 | error = reject_slave_controller(ofconn); | |
5793 | if (error) { | |
5794 | return error; | |
5795 | } | |
5796 | ||
5797 | error = ofputil_decode_table_mod(oh, &tm); | |
5798 | if (error) { | |
5799 | return error; | |
5800 | } | |
5801 | ||
67761761 | 5802 | return table_mod(ofproto, &tm); |
918f2b82 AZ |
5803 | } |
5804 | ||
90bf1e07 | 5805 | static enum ofperr |
d1e2cf21 | 5806 | handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg) |
15aaf599 | 5807 | OVS_EXCLUDED(ofproto_mutex) |
064af421 | 5808 | { |
d1e2cf21 | 5809 | const struct ofp_header *oh = msg->data; |
982697a4 | 5810 | enum ofptype type; |
90bf1e07 | 5811 | enum ofperr error; |
064af421 | 5812 | |
982697a4 | 5813 | error = ofptype_decode(&type, oh); |
d1e2cf21 BP |
5814 | if (error) { |
5815 | return error; | |
5816 | } | |
ff3c2c63 YT |
5817 | if (oh->version >= OFP13_VERSION && ofpmsg_is_stat_request(oh) |
5818 | && ofpmp_more(oh)) { | |
5819 | /* We have no buffer implementation for multipart requests. | |
5820 | * Report overflow for requests which consists of multiple | |
5821 | * messages. */ | |
5822 | return OFPERR_OFPBRC_MULTIPART_BUFFER_OVERFLOW; | |
5823 | } | |
064af421 | 5824 | |
982697a4 | 5825 | switch (type) { |
d1e2cf21 | 5826 | /* OpenFlow requests. */ |
982697a4 | 5827 | case OFPTYPE_ECHO_REQUEST: |
d1e2cf21 | 5828 | return handle_echo_request(ofconn, oh); |
064af421 | 5829 | |
982697a4 | 5830 | case OFPTYPE_FEATURES_REQUEST: |
d1e2cf21 | 5831 | return handle_features_request(ofconn, oh); |
064af421 | 5832 | |
982697a4 | 5833 | case OFPTYPE_GET_CONFIG_REQUEST: |
d1e2cf21 | 5834 | return handle_get_config_request(ofconn, oh); |
064af421 | 5835 | |
982697a4 BP |
5836 | case OFPTYPE_SET_CONFIG: |
5837 | return handle_set_config(ofconn, oh); | |
064af421 | 5838 | |
982697a4 BP |
5839 | case OFPTYPE_PACKET_OUT: |
5840 | return handle_packet_out(ofconn, oh); | |
064af421 | 5841 | |
982697a4 | 5842 | case OFPTYPE_PORT_MOD: |
d1e2cf21 | 5843 | return handle_port_mod(ofconn, oh); |
064af421 | 5844 | |
982697a4 | 5845 | case OFPTYPE_FLOW_MOD: |
2e4f5fcf | 5846 | return handle_flow_mod(ofconn, oh); |
064af421 | 5847 | |
7395c052 NZ |
5848 | case OFPTYPE_GROUP_MOD: |
5849 | return handle_group_mod(ofconn, oh); | |
5850 | ||
918f2b82 AZ |
5851 | case OFPTYPE_TABLE_MOD: |
5852 | return handle_table_mod(ofconn, oh); | |
5853 | ||
9cae45dc JR |
5854 | case OFPTYPE_METER_MOD: |
5855 | return handle_meter_mod(ofconn, oh); | |
5856 | ||
982697a4 | 5857 | case OFPTYPE_BARRIER_REQUEST: |
d1e2cf21 | 5858 | return handle_barrier_request(ofconn, oh); |
064af421 | 5859 | |
6ea4776b JR |
5860 | case OFPTYPE_ROLE_REQUEST: |
5861 | return handle_role_request(ofconn, oh); | |
5862 | ||
d1e2cf21 | 5863 | /* OpenFlow replies. */ |
982697a4 | 5864 | case OFPTYPE_ECHO_REPLY: |
d1e2cf21 | 5865 | return 0; |
246e61ea | 5866 | |
d1e2cf21 | 5867 | /* Nicira extension requests. */ |
982697a4 | 5868 | case OFPTYPE_FLOW_MOD_TABLE_ID: |
6c1491fb | 5869 | return handle_nxt_flow_mod_table_id(ofconn, oh); |
d1e2cf21 | 5870 | |
982697a4 | 5871 | case OFPTYPE_SET_FLOW_FORMAT: |
d1e2cf21 BP |
5872 | return handle_nxt_set_flow_format(ofconn, oh); |
5873 | ||
982697a4 | 5874 | case OFPTYPE_SET_PACKET_IN_FORMAT: |
54834960 EJ |
5875 | return handle_nxt_set_packet_in_format(ofconn, oh); |
5876 | ||
982697a4 | 5877 | case OFPTYPE_SET_CONTROLLER_ID: |
a7349929 BP |
5878 | return handle_nxt_set_controller_id(ofconn, oh); |
5879 | ||
982697a4 | 5880 | case OFPTYPE_FLOW_AGE: |
f27f2134 BP |
5881 | /* Nothing to do. */ |
5882 | return 0; | |
5883 | ||
982697a4 | 5884 | case OFPTYPE_FLOW_MONITOR_CANCEL: |
2b07c8b1 BP |
5885 | return handle_flow_monitor_cancel(ofconn, oh); |
5886 | ||
982697a4 | 5887 | case OFPTYPE_SET_ASYNC_CONFIG: |
80d5aefd BP |
5888 | return handle_nxt_set_async_config(ofconn, oh); |
5889 | ||
c423b3b3 AC |
5890 | case OFPTYPE_GET_ASYNC_REQUEST: |
5891 | return handle_nxt_get_async_request(ofconn, oh); | |
5892 | ||
349adfb2 | 5893 | /* Statistics requests. */ |
982697a4 BP |
5894 | case OFPTYPE_DESC_STATS_REQUEST: |
5895 | return handle_desc_stats_request(ofconn, oh); | |
5896 | ||
5897 | case OFPTYPE_FLOW_STATS_REQUEST: | |
5898 | return handle_flow_stats_request(ofconn, oh); | |
5899 | ||
5900 | case OFPTYPE_AGGREGATE_STATS_REQUEST: | |
5901 | return handle_aggregate_stats_request(ofconn, oh); | |
5902 | ||
5903 | case OFPTYPE_TABLE_STATS_REQUEST: | |
5904 | return handle_table_stats_request(ofconn, oh); | |
5905 | ||
5906 | case OFPTYPE_PORT_STATS_REQUEST: | |
5907 | return handle_port_stats_request(ofconn, oh); | |
5908 | ||
5909 | case OFPTYPE_QUEUE_STATS_REQUEST: | |
5910 | return handle_queue_stats_request(ofconn, oh); | |
5911 | ||
5912 | case OFPTYPE_PORT_DESC_STATS_REQUEST: | |
5913 | return handle_port_desc_stats_request(ofconn, oh); | |
5914 | ||
5915 | case OFPTYPE_FLOW_MONITOR_STATS_REQUEST: | |
5916 | return handle_flow_monitor_request(ofconn, oh); | |
5917 | ||
261bd854 BP |
5918 | case OFPTYPE_METER_STATS_REQUEST: |
5919 | case OFPTYPE_METER_CONFIG_STATS_REQUEST: | |
9cae45dc JR |
5920 | return handle_meter_request(ofconn, oh, type); |
5921 | ||
261bd854 | 5922 | case OFPTYPE_METER_FEATURES_STATS_REQUEST: |
9cae45dc JR |
5923 | return handle_meter_features_request(ofconn, oh); |
5924 | ||
261bd854 | 5925 | case OFPTYPE_GROUP_STATS_REQUEST: |
7395c052 NZ |
5926 | return handle_group_stats_request(ofconn, oh); |
5927 | ||
261bd854 | 5928 | case OFPTYPE_GROUP_DESC_STATS_REQUEST: |
7395c052 NZ |
5929 | return handle_group_desc_stats_request(ofconn, oh); |
5930 | ||
261bd854 | 5931 | case OFPTYPE_GROUP_FEATURES_STATS_REQUEST: |
7395c052 NZ |
5932 | return handle_group_features_stats_request(ofconn, oh); |
5933 | ||
7395c052 | 5934 | case OFPTYPE_QUEUE_GET_CONFIG_REQUEST: |
e8f9a7bb | 5935 | return handle_queue_get_config_request(ofconn, oh); |
2e1ae200 | 5936 | |
982697a4 BP |
5937 | case OFPTYPE_HELLO: |
5938 | case OFPTYPE_ERROR: | |
5939 | case OFPTYPE_FEATURES_REPLY: | |
5940 | case OFPTYPE_GET_CONFIG_REPLY: | |
5941 | case OFPTYPE_PACKET_IN: | |
5942 | case OFPTYPE_FLOW_REMOVED: | |
5943 | case OFPTYPE_PORT_STATUS: | |
5944 | case OFPTYPE_BARRIER_REPLY: | |
c545d38d | 5945 | case OFPTYPE_QUEUE_GET_CONFIG_REPLY: |
982697a4 BP |
5946 | case OFPTYPE_DESC_STATS_REPLY: |
5947 | case OFPTYPE_FLOW_STATS_REPLY: | |
5948 | case OFPTYPE_QUEUE_STATS_REPLY: | |
5949 | case OFPTYPE_PORT_STATS_REPLY: | |
5950 | case OFPTYPE_TABLE_STATS_REPLY: | |
5951 | case OFPTYPE_AGGREGATE_STATS_REPLY: | |
5952 | case OFPTYPE_PORT_DESC_STATS_REPLY: | |
5953 | case OFPTYPE_ROLE_REPLY: | |
5954 | case OFPTYPE_FLOW_MONITOR_PAUSED: | |
5955 | case OFPTYPE_FLOW_MONITOR_RESUMED: | |
5956 | case OFPTYPE_FLOW_MONITOR_STATS_REPLY: | |
2e1ae200 | 5957 | case OFPTYPE_GET_ASYNC_REPLY: |
261bd854 BP |
5958 | case OFPTYPE_GROUP_STATS_REPLY: |
5959 | case OFPTYPE_GROUP_DESC_STATS_REPLY: | |
5960 | case OFPTYPE_GROUP_FEATURES_STATS_REPLY: | |
5961 | case OFPTYPE_METER_STATS_REPLY: | |
5962 | case OFPTYPE_METER_CONFIG_STATS_REPLY: | |
5963 | case OFPTYPE_METER_FEATURES_STATS_REPLY: | |
e8f9a7bb | 5964 | case OFPTYPE_TABLE_FEATURES_STATS_REQUEST: |
261bd854 | 5965 | case OFPTYPE_TABLE_FEATURES_STATS_REPLY: |
252f3411 | 5966 | case OFPTYPE_ROLE_STATUS: |
064af421 | 5967 | default: |
76ec08e0 YT |
5968 | if (ofpmsg_is_stat_request(oh)) { |
5969 | return OFPERR_OFPBRC_BAD_STAT; | |
5970 | } else { | |
5971 | return OFPERR_OFPBRC_BAD_TYPE; | |
5972 | } | |
064af421 | 5973 | } |
d1e2cf21 | 5974 | } |
064af421 | 5975 | |
7ee20df1 | 5976 | static bool |
e03248b7 | 5977 | handle_openflow(struct ofconn *ofconn, const struct ofpbuf *ofp_msg) |
15aaf599 | 5978 | OVS_EXCLUDED(ofproto_mutex) |
d1e2cf21 BP |
5979 | { |
5980 | int error = handle_openflow__(ofconn, ofp_msg); | |
7ee20df1 | 5981 | if (error && error != OFPROTO_POSTPONE) { |
1be5ff75 | 5982 | ofconn_send_error(ofconn, ofp_msg->data, error); |
064af421 | 5983 | } |
d1e2cf21 | 5984 | COVERAGE_INC(ofproto_recv_openflow); |
7ee20df1 BP |
5985 | return error != OFPROTO_POSTPONE; |
5986 | } | |
5987 | \f | |
5988 | /* Asynchronous operations. */ | |
5989 | ||
5990 | /* Creates and returns a new ofopgroup that is not associated with any | |
5991 | * OpenFlow connection. | |
5992 | * | |
5993 | * The caller should add operations to the returned group with | |
5994 | * ofoperation_create() and then submit it with ofopgroup_submit(). */ | |
5995 | static struct ofopgroup * | |
7024dffe | 5996 | ofopgroup_create_unattached(struct ofproto *ofproto) |
15aaf599 | 5997 | OVS_REQUIRES(ofproto_mutex) |
7ee20df1 BP |
5998 | { |
5999 | struct ofopgroup *group = xzalloc(sizeof *group); | |
6000 | group->ofproto = ofproto; | |
6001 | list_init(&group->ofproto_node); | |
6002 | list_init(&group->ops); | |
6003 | list_init(&group->ofconn_node); | |
6004 | return group; | |
6005 | } | |
6006 | ||
7024dffe BP |
6007 | /* Creates and returns a new ofopgroup for 'ofproto'. |
6008 | * | |
6009 | * If 'ofconn' is NULL, the new ofopgroup is not associated with any OpenFlow | |
6010 | * connection. The 'request' and 'buffer_id' arguments are ignored. | |
6011 | * | |
6012 | * If 'ofconn' is nonnull, then the new ofopgroup is associated with 'ofconn'. | |
6013 | * If the ofopgroup eventually fails, then the error reply will include | |
6014 | * 'request'. If the ofopgroup eventually succeeds, then the packet with | |
6015 | * buffer id 'buffer_id' on 'ofconn' will be sent by 'ofconn''s ofproto. | |
7ee20df1 BP |
6016 | * |
6017 | * The caller should add operations to the returned group with | |
6018 | * ofoperation_create() and then submit it with ofopgroup_submit(). */ | |
6019 | static struct ofopgroup * | |
7024dffe BP |
6020 | ofopgroup_create(struct ofproto *ofproto, struct ofconn *ofconn, |
6021 | const struct ofp_header *request, uint32_t buffer_id) | |
15aaf599 | 6022 | OVS_REQUIRES(ofproto_mutex) |
7ee20df1 | 6023 | { |
7024dffe BP |
6024 | struct ofopgroup *group = ofopgroup_create_unattached(ofproto); |
6025 | if (ofconn) { | |
6026 | size_t request_len = ntohs(request->length); | |
7ee20df1 | 6027 | |
cb22974d | 6028 | ovs_assert(ofconn_get_ofproto(ofconn) == ofproto); |
7ee20df1 | 6029 | |
7024dffe BP |
6030 | ofconn_add_opgroup(ofconn, &group->ofconn_node); |
6031 | group->ofconn = ofconn; | |
6032 | group->request = xmemdup(request, MIN(request_len, 64)); | |
6033 | group->buffer_id = buffer_id; | |
6034 | } | |
7ee20df1 BP |
6035 | return group; |
6036 | } | |
6037 | ||
6038 | /* Submits 'group' for processing. | |
6039 | * | |
6040 | * If 'group' contains no operations (e.g. none were ever added, or all of the | |
6041 | * ones that were added completed synchronously), then it is destroyed | |
6042 | * immediately. Otherwise it is added to the ofproto's list of pending | |
6043 | * groups. */ | |
6044 | static void | |
6045 | ofopgroup_submit(struct ofopgroup *group) | |
15aaf599 | 6046 | OVS_REQUIRES(ofproto_mutex) |
7ee20df1 | 6047 | { |
e615b0a3 BP |
6048 | if (!group->n_running) { |
6049 | ofopgroup_complete(group); | |
7ee20df1 BP |
6050 | } else { |
6051 | list_push_back(&group->ofproto->pending, &group->ofproto_node); | |
dd5616b3 | 6052 | group->ofproto->n_pending++; |
7ee20df1 BP |
6053 | } |
6054 | } | |
6055 | ||
6056 | static void | |
e615b0a3 | 6057 | ofopgroup_complete(struct ofopgroup *group) |
15aaf599 | 6058 | OVS_REQUIRES(ofproto_mutex) |
7ee20df1 | 6059 | { |
e615b0a3 | 6060 | struct ofproto *ofproto = group->ofproto; |
2b07c8b1 BP |
6061 | |
6062 | struct ofconn *abbrev_ofconn; | |
6063 | ovs_be32 abbrev_xid; | |
6064 | ||
e615b0a3 BP |
6065 | struct ofoperation *op, *next_op; |
6066 | int error; | |
6067 | ||
cb22974d | 6068 | ovs_assert(!group->n_running); |
e615b0a3 BP |
6069 | |
6070 | error = 0; | |
6071 | LIST_FOR_EACH (op, group_node, &group->ops) { | |
6072 | if (op->error) { | |
6073 | error = op->error; | |
6074 | break; | |
6075 | } | |
6076 | } | |
6077 | ||
6078 | if (!error && group->ofconn && group->buffer_id != UINT32_MAX) { | |
6079 | LIST_FOR_EACH (op, group_node, &group->ops) { | |
6080 | if (op->type != OFOPERATION_DELETE) { | |
6081 | struct ofpbuf *packet; | |
4e022ec0 | 6082 | ofp_port_t in_port; |
e615b0a3 BP |
6083 | |
6084 | error = ofconn_pktbuf_retrieve(group->ofconn, group->buffer_id, | |
6085 | &packet, &in_port); | |
6086 | if (packet) { | |
35412852 BP |
6087 | struct rule_execute *re; |
6088 | ||
cb22974d | 6089 | ovs_assert(!error); |
35412852 BP |
6090 | |
6091 | ofproto_rule_ref(op->rule); | |
6092 | ||
6093 | re = xmalloc(sizeof *re); | |
6094 | re->rule = op->rule; | |
6095 | re->in_port = in_port; | |
6096 | re->packet = packet; | |
6097 | ||
6098 | if (!guarded_list_push_back(&ofproto->rule_executes, | |
6099 | &re->list_node, 1024)) { | |
6100 | ofproto_rule_unref(op->rule); | |
6101 | ofpbuf_delete(re->packet); | |
6102 | free(re); | |
6103 | } | |
e615b0a3 BP |
6104 | } |
6105 | break; | |
6106 | } | |
6107 | } | |
6108 | } | |
6109 | ||
2b07c8b1 BP |
6110 | if (!error && !list_is_empty(&group->ofconn_node)) { |
6111 | abbrev_ofconn = group->ofconn; | |
6112 | abbrev_xid = group->request->xid; | |
6113 | } else { | |
6114 | abbrev_ofconn = NULL; | |
6115 | abbrev_xid = htonl(0); | |
6116 | } | |
e615b0a3 BP |
6117 | LIST_FOR_EACH_SAFE (op, next_op, group_node, &group->ops) { |
6118 | struct rule *rule = op->rule; | |
2b07c8b1 | 6119 | |
644e2a7c BP |
6120 | /* We generally want to report the change to active OpenFlow flow |
6121 | monitors (e.g. NXST_FLOW_MONITOR). There are three exceptions: | |
6122 | ||
6123 | - The operation failed. | |
6124 | ||
6125 | - The affected rule is not visible to controllers. | |
6126 | ||
6127 | - The operation's only effect was to update rule->modified. */ | |
6128 | if (!(op->error | |
6129 | || ofproto_rule_is_hidden(rule) | |
6130 | || (op->type == OFOPERATION_MODIFY | |
6f00e29b | 6131 | && op->actions |
644e2a7c | 6132 | && rule->flow_cookie == op->flow_cookie))) { |
2b07c8b1 BP |
6133 | /* Check that we can just cast from ofoperation_type to |
6134 | * nx_flow_update_event. */ | |
b277c7cc BP |
6135 | enum nx_flow_update_event event_type; |
6136 | ||
6137 | switch (op->type) { | |
6138 | case OFOPERATION_ADD: | |
6139 | case OFOPERATION_REPLACE: | |
6140 | event_type = NXFME_ADDED; | |
6141 | break; | |
6142 | ||
6143 | case OFOPERATION_DELETE: | |
6144 | event_type = NXFME_DELETED; | |
6145 | break; | |
6146 | ||
6147 | case OFOPERATION_MODIFY: | |
6148 | event_type = NXFME_MODIFIED; | |
6149 | break; | |
6150 | ||
6151 | default: | |
428b2edd | 6152 | OVS_NOT_REACHED(); |
b277c7cc BP |
6153 | } |
6154 | ||
6155 | ofmonitor_report(ofproto->connmgr, rule, event_type, | |
2b07c8b1 BP |
6156 | op->reason, abbrev_ofconn, abbrev_xid); |
6157 | } | |
6158 | ||
e615b0a3 BP |
6159 | rule->pending = NULL; |
6160 | ||
6161 | switch (op->type) { | |
6162 | case OFOPERATION_ADD: | |
6163 | if (!op->error) { | |
5cb7a798 BP |
6164 | uint16_t vid_mask; |
6165 | ||
5cb7a798 BP |
6166 | vid_mask = minimask_get_vid_mask(&rule->cr.match.mask); |
6167 | if (vid_mask == VLAN_VID_MASK) { | |
e615b0a3 | 6168 | if (ofproto->vlan_bitmap) { |
5cb7a798 | 6169 | uint16_t vid = miniflow_get_vid(&rule->cr.match.flow); |
e615b0a3 BP |
6170 | if (!bitmap_is_set(ofproto->vlan_bitmap, vid)) { |
6171 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
6172 | ofproto->vlans_changed = true; | |
6173 | } | |
6174 | } else { | |
6175 | ofproto->vlans_changed = true; | |
6176 | } | |
6177 | } | |
6178 | } else { | |
b277c7cc | 6179 | oftable_remove_rule(rule); |
a2143702 | 6180 | ofproto_rule_unref(rule); |
e615b0a3 BP |
6181 | } |
6182 | break; | |
6183 | ||
6184 | case OFOPERATION_DELETE: | |
cb22974d | 6185 | ovs_assert(!op->error); |
a2143702 | 6186 | ofproto_rule_unref(rule); |
e615b0a3 BP |
6187 | op->rule = NULL; |
6188 | break; | |
6189 | ||
6190 | case OFOPERATION_MODIFY: | |
b277c7cc | 6191 | case OFOPERATION_REPLACE: |
e615b0a3 | 6192 | if (!op->error) { |
b277c7cc BP |
6193 | long long int now = time_msec(); |
6194 | ||
6195 | rule->modified = now; | |
6196 | if (op->type == OFOPERATION_REPLACE) { | |
6197 | rule->created = rule->used = now; | |
6198 | } | |
e615b0a3 | 6199 | } else { |
98eaac36 | 6200 | ofproto_rule_change_cookie(ofproto, rule, op->flow_cookie); |
d10976b7 | 6201 | ovs_mutex_lock(&rule->mutex); |
b277c7cc BP |
6202 | rule->idle_timeout = op->idle_timeout; |
6203 | rule->hard_timeout = op->hard_timeout; | |
d10976b7 | 6204 | ovs_mutex_unlock(&rule->mutex); |
6f00e29b BP |
6205 | if (op->actions) { |
6206 | struct rule_actions *old_actions; | |
884e1dc4 | 6207 | |
c7c9a7c8 | 6208 | ovs_mutex_lock(&rule->mutex); |
6f00e29b BP |
6209 | old_actions = rule->actions; |
6210 | rule->actions = op->actions; | |
c7c9a7c8 | 6211 | ovs_mutex_unlock(&rule->mutex); |
884e1dc4 | 6212 | |
6f00e29b BP |
6213 | op->actions = NULL; |
6214 | rule_actions_unref(old_actions); | |
08043761 | 6215 | } |
3f517bcd | 6216 | rule->flags = op->flags; |
e615b0a3 BP |
6217 | } |
6218 | break; | |
6219 | ||
6220 | default: | |
428b2edd | 6221 | OVS_NOT_REACHED(); |
e615b0a3 BP |
6222 | } |
6223 | ||
6224 | ofoperation_destroy(op); | |
6225 | } | |
6226 | ||
2b07c8b1 BP |
6227 | ofmonitor_flush(ofproto->connmgr); |
6228 | ||
7ee20df1 | 6229 | if (!list_is_empty(&group->ofproto_node)) { |
cb22974d | 6230 | ovs_assert(ofproto->n_pending > 0); |
e615b0a3 | 6231 | ofproto->n_pending--; |
7ee20df1 BP |
6232 | list_remove(&group->ofproto_node); |
6233 | } | |
6234 | if (!list_is_empty(&group->ofconn_node)) { | |
6235 | list_remove(&group->ofconn_node); | |
e615b0a3 BP |
6236 | if (error) { |
6237 | ofconn_send_error(group->ofconn, group->request, error); | |
7ee20df1 | 6238 | } |
e615b0a3 | 6239 | connmgr_retry(ofproto->connmgr); |
7ee20df1 BP |
6240 | } |
6241 | free(group->request); | |
6242 | free(group); | |
6243 | } | |
6244 | ||
6245 | /* Initiates a new operation on 'rule', of the specified 'type', within | |
a7d94793 BP |
6246 | * 'group'. Prior to calling, 'rule' must not have any pending operation. |
6247 | * | |
2b07c8b1 BP |
6248 | * For a 'type' of OFOPERATION_DELETE, 'reason' should specify the reason that |
6249 | * the flow is being deleted. For other 'type's, 'reason' is ignored (use 0). | |
6250 | * | |
a7d94793 BP |
6251 | * Returns the newly created ofoperation (which is also available as |
6252 | * rule->pending). */ | |
6253 | static struct ofoperation * | |
7ee20df1 | 6254 | ofoperation_create(struct ofopgroup *group, struct rule *rule, |
2b07c8b1 BP |
6255 | enum ofoperation_type type, |
6256 | enum ofp_flow_removed_reason reason) | |
15aaf599 | 6257 | OVS_REQUIRES(ofproto_mutex) |
7ee20df1 | 6258 | { |
a5b8d268 | 6259 | struct ofproto *ofproto = group->ofproto; |
7ee20df1 BP |
6260 | struct ofoperation *op; |
6261 | ||
cb22974d | 6262 | ovs_assert(!rule->pending); |
7ee20df1 BP |
6263 | |
6264 | op = rule->pending = xzalloc(sizeof *op); | |
6265 | op->group = group; | |
6266 | list_push_back(&group->ops, &op->group_node); | |
6267 | op->rule = rule; | |
6268 | op->type = type; | |
2b07c8b1 | 6269 | op->reason = reason; |
7ee20df1 | 6270 | op->flow_cookie = rule->flow_cookie; |
d10976b7 | 6271 | ovs_mutex_lock(&rule->mutex); |
b277c7cc BP |
6272 | op->idle_timeout = rule->idle_timeout; |
6273 | op->hard_timeout = rule->hard_timeout; | |
d10976b7 | 6274 | ovs_mutex_unlock(&rule->mutex); |
3f517bcd | 6275 | op->flags = rule->flags; |
7ee20df1 | 6276 | |
e615b0a3 BP |
6277 | group->n_running++; |
6278 | ||
7ee20df1 | 6279 | if (type == OFOPERATION_DELETE) { |
a5b8d268 | 6280 | hmap_insert(&ofproto->deletions, &op->hmap_node, |
7ee20df1 BP |
6281 | cls_rule_hash(&rule->cr, rule->table_id)); |
6282 | } | |
a7d94793 BP |
6283 | |
6284 | return op; | |
7ee20df1 BP |
6285 | } |
6286 | ||
6287 | static void | |
6288 | ofoperation_destroy(struct ofoperation *op) | |
15aaf599 | 6289 | OVS_REQUIRES(ofproto_mutex) |
7ee20df1 BP |
6290 | { |
6291 | struct ofopgroup *group = op->group; | |
6292 | ||
6293 | if (op->rule) { | |
6294 | op->rule->pending = NULL; | |
6295 | } | |
6296 | if (op->type == OFOPERATION_DELETE) { | |
6297 | hmap_remove(&group->ofproto->deletions, &op->hmap_node); | |
6298 | } | |
6299 | list_remove(&op->group_node); | |
6f00e29b | 6300 | rule_actions_unref(op->actions); |
7ee20df1 | 6301 | free(op); |
7ee20df1 BP |
6302 | } |
6303 | ||
6304 | /* Indicates that 'op' completed with status 'error', which is either 0 to | |
90bf1e07 | 6305 | * indicate success or an OpenFlow error code on failure. |
7ee20df1 | 6306 | * |
a6a62132 | 6307 | * If 'error' is 0, indicating success, the operation will be committed |
b277c7cc | 6308 | * permanently to the flow table. |
a6a62132 BP |
6309 | * |
6310 | * If 'error' is nonzero, then generally the operation will be rolled back: | |
6311 | * | |
6312 | * - If 'op' is an "add flow" operation, ofproto removes the new rule or | |
6313 | * restores the original rule. The caller must have uninitialized any | |
6314 | * derived state in the new rule, as in step 5 of in the "Life Cycle" in | |
6315 | * ofproto/ofproto-provider.h. ofoperation_complete() performs steps 6 and | |
6316 | * and 7 for the new rule, calling its ->rule_dealloc() function. | |
6317 | * | |
6318 | * - If 'op' is a "modify flow" operation, ofproto restores the original | |
6319 | * actions. | |
6320 | * | |
6321 | * - 'op' must not be a "delete flow" operation. Removing a rule is not | |
6322 | * allowed to fail. It must always succeed. | |
7ee20df1 | 6323 | * |
5bee6e26 JP |
6324 | * Please see the large comment in ofproto/ofproto-provider.h titled |
6325 | * "Asynchronous Operation Support" for more information. */ | |
7ee20df1 | 6326 | void |
90bf1e07 | 6327 | ofoperation_complete(struct ofoperation *op, enum ofperr error) |
7ee20df1 BP |
6328 | { |
6329 | struct ofopgroup *group = op->group; | |
7ee20df1 | 6330 | |
cb22974d BP |
6331 | ovs_assert(group->n_running > 0); |
6332 | ovs_assert(!error || op->type != OFOPERATION_DELETE); | |
9075907c | 6333 | |
e615b0a3 BP |
6334 | op->error = error; |
6335 | if (!--group->n_running && !list_is_empty(&group->ofproto_node)) { | |
15aaf599 BP |
6336 | /* This function can be called from ->rule_construct(), in which case |
6337 | * ofproto_mutex is held, or it can be called from ->run(), in which | |
6338 | * case ofproto_mutex is not held. But only in the latter case can we | |
6339 | * arrive here, so we can safely take ofproto_mutex now. */ | |
6340 | ovs_mutex_lock(&ofproto_mutex); | |
6341 | ovs_assert(op->rule->pending == op); | |
e615b0a3 | 6342 | ofopgroup_complete(group); |
15aaf599 | 6343 | ovs_mutex_unlock(&ofproto_mutex); |
7ee20df1 | 6344 | } |
7ee20df1 | 6345 | } |
064af421 | 6346 | \f |
064af421 | 6347 | static uint64_t |
fa60c019 | 6348 | pick_datapath_id(const struct ofproto *ofproto) |
064af421 | 6349 | { |
fa60c019 | 6350 | const struct ofport *port; |
064af421 | 6351 | |
abe529af | 6352 | port = ofproto_get_port(ofproto, OFPP_LOCAL); |
fa60c019 BP |
6353 | if (port) { |
6354 | uint8_t ea[ETH_ADDR_LEN]; | |
6355 | int error; | |
6356 | ||
6357 | error = netdev_get_etheraddr(port->netdev, ea); | |
064af421 BP |
6358 | if (!error) { |
6359 | return eth_addr_to_uint64(ea); | |
6360 | } | |
fbfa2911 BP |
6361 | VLOG_WARN("%s: could not get MAC address for %s (%s)", |
6362 | ofproto->name, netdev_get_name(port->netdev), | |
10a89ef0 | 6363 | ovs_strerror(error)); |
064af421 | 6364 | } |
fa60c019 | 6365 | return ofproto->fallback_dpid; |
064af421 BP |
6366 | } |
6367 | ||
6368 | static uint64_t | |
6369 | pick_fallback_dpid(void) | |
6370 | { | |
6371 | uint8_t ea[ETH_ADDR_LEN]; | |
70150daf | 6372 | eth_addr_nicira_random(ea); |
064af421 BP |
6373 | return eth_addr_to_uint64(ea); |
6374 | } | |
6375 | \f | |
254750ce BP |
6376 | /* Table overflow policy. */ |
6377 | ||
ad3efdcb EJ |
6378 | /* Chooses and updates 'rulep' with a rule to evict from 'table'. Sets 'rulep' |
6379 | * to NULL if the table is not configured to evict rules or if the table | |
6380 | * contains no evictable rules. (Rules with a readlock on their evict rwlock, | |
6381 | * or with no timeouts are not evictable.) */ | |
6382 | static bool | |
6383 | choose_rule_to_evict(struct oftable *table, struct rule **rulep) | |
15aaf599 | 6384 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6385 | { |
6386 | struct eviction_group *evg; | |
6387 | ||
ad3efdcb | 6388 | *rulep = NULL; |
254750ce | 6389 | if (!table->eviction_fields) { |
ad3efdcb | 6390 | return false; |
254750ce BP |
6391 | } |
6392 | ||
6393 | /* In the common case, the outer and inner loops here will each be entered | |
6394 | * exactly once: | |
6395 | * | |
6396 | * - The inner loop normally "return"s in its first iteration. If the | |
6397 | * eviction group has any evictable rules, then it always returns in | |
6398 | * some iteration. | |
6399 | * | |
6400 | * - The outer loop only iterates more than once if the largest eviction | |
6401 | * group has no evictable rules. | |
6402 | * | |
6403 | * - The outer loop can exit only if table's 'max_flows' is all filled up | |
afe2143d | 6404 | * by unevictable rules. */ |
254750ce BP |
6405 | HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) { |
6406 | struct rule *rule; | |
6407 | ||
6408 | HEAP_FOR_EACH (rule, evg_node, &evg->rules) { | |
15aaf599 BP |
6409 | *rulep = rule; |
6410 | return true; | |
254750ce BP |
6411 | } |
6412 | } | |
6413 | ||
ad3efdcb | 6414 | return false; |
254750ce BP |
6415 | } |
6416 | ||
6417 | /* Searches 'ofproto' for tables that have more flows than their configured | |
6418 | * maximum and that have flow eviction enabled, and evicts as many flows as | |
6419 | * necessary and currently feasible from them. | |
6420 | * | |
6421 | * This triggers only when an OpenFlow table has N flows in it and then the | |
6422 | * client configures a maximum number of flows less than N. */ | |
6423 | static void | |
6424 | ofproto_evict(struct ofproto *ofproto) | |
6425 | { | |
254750ce BP |
6426 | struct oftable *table; |
6427 | ||
15aaf599 | 6428 | ovs_mutex_lock(&ofproto_mutex); |
254750ce | 6429 | OFPROTO_FOR_EACH_TABLE (table, ofproto) { |
2e31a9b8 | 6430 | evict_rules_from_table(ofproto, table, 0); |
254750ce | 6431 | } |
15aaf599 | 6432 | ovs_mutex_unlock(&ofproto_mutex); |
254750ce BP |
6433 | } |
6434 | \f | |
6435 | /* Eviction groups. */ | |
6436 | ||
6437 | /* Returns the priority to use for an eviction_group that contains 'n_rules' | |
6438 | * rules. The priority contains low-order random bits to ensure that eviction | |
6439 | * groups with the same number of rules are prioritized randomly. */ | |
6440 | static uint32_t | |
6441 | eviction_group_priority(size_t n_rules) | |
6442 | { | |
6443 | uint16_t size = MIN(UINT16_MAX, n_rules); | |
6444 | return (size << 16) | random_uint16(); | |
6445 | } | |
6446 | ||
6447 | /* Updates 'evg', an eviction_group within 'table', following a change that | |
6448 | * adds or removes rules in 'evg'. */ | |
6449 | static void | |
6450 | eviction_group_resized(struct oftable *table, struct eviction_group *evg) | |
15aaf599 | 6451 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6452 | { |
6453 | heap_change(&table->eviction_groups_by_size, &evg->size_node, | |
6454 | eviction_group_priority(heap_count(&evg->rules))); | |
6455 | } | |
6456 | ||
6457 | /* Destroys 'evg', an eviction_group within 'table': | |
6458 | * | |
6459 | * - Removes all the rules, if any, from 'evg'. (It doesn't destroy the | |
6460 | * rules themselves, just removes them from the eviction group.) | |
6461 | * | |
6462 | * - Removes 'evg' from 'table'. | |
6463 | * | |
6464 | * - Frees 'evg'. */ | |
6465 | static void | |
6466 | eviction_group_destroy(struct oftable *table, struct eviction_group *evg) | |
15aaf599 | 6467 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6468 | { |
6469 | while (!heap_is_empty(&evg->rules)) { | |
6470 | struct rule *rule; | |
6471 | ||
6472 | rule = CONTAINER_OF(heap_pop(&evg->rules), struct rule, evg_node); | |
6473 | rule->eviction_group = NULL; | |
6474 | } | |
6475 | hmap_remove(&table->eviction_groups_by_id, &evg->id_node); | |
6476 | heap_remove(&table->eviction_groups_by_size, &evg->size_node); | |
6477 | heap_destroy(&evg->rules); | |
6478 | free(evg); | |
6479 | } | |
6480 | ||
6481 | /* Removes 'rule' from its eviction group, if any. */ | |
6482 | static void | |
6483 | eviction_group_remove_rule(struct rule *rule) | |
15aaf599 | 6484 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6485 | { |
6486 | if (rule->eviction_group) { | |
6487 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
6488 | struct eviction_group *evg = rule->eviction_group; | |
6489 | ||
6490 | rule->eviction_group = NULL; | |
6491 | heap_remove(&evg->rules, &rule->evg_node); | |
6492 | if (heap_is_empty(&evg->rules)) { | |
6493 | eviction_group_destroy(table, evg); | |
6494 | } else { | |
6495 | eviction_group_resized(table, evg); | |
6496 | } | |
6497 | } | |
6498 | } | |
6499 | ||
6500 | /* Hashes the 'rule''s values for the eviction_fields of 'rule''s table, and | |
6501 | * returns the hash value. */ | |
6502 | static uint32_t | |
6503 | eviction_group_hash_rule(struct rule *rule) | |
15aaf599 | 6504 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6505 | { |
6506 | struct oftable *table = &rule->ofproto->tables[rule->table_id]; | |
6507 | const struct mf_subfield *sf; | |
5cb7a798 | 6508 | struct flow flow; |
254750ce BP |
6509 | uint32_t hash; |
6510 | ||
6511 | hash = table->eviction_group_id_basis; | |
5cb7a798 | 6512 | miniflow_expand(&rule->cr.match.flow, &flow); |
254750ce BP |
6513 | for (sf = table->eviction_fields; |
6514 | sf < &table->eviction_fields[table->n_eviction_fields]; | |
6515 | sf++) | |
6516 | { | |
5cb7a798 | 6517 | if (mf_are_prereqs_ok(sf->field, &flow)) { |
254750ce BP |
6518 | union mf_value value; |
6519 | ||
5cb7a798 | 6520 | mf_get_value(sf->field, &flow, &value); |
254750ce BP |
6521 | if (sf->ofs) { |
6522 | bitwise_zero(&value, sf->field->n_bytes, 0, sf->ofs); | |
6523 | } | |
6524 | if (sf->ofs + sf->n_bits < sf->field->n_bytes * 8) { | |
6525 | unsigned int start = sf->ofs + sf->n_bits; | |
6526 | bitwise_zero(&value, sf->field->n_bytes, start, | |
6527 | sf->field->n_bytes * 8 - start); | |
6528 | } | |
6529 | hash = hash_bytes(&value, sf->field->n_bytes, hash); | |
6530 | } else { | |
6531 | hash = hash_int(hash, 0); | |
6532 | } | |
6533 | } | |
6534 | ||
6535 | return hash; | |
6536 | } | |
6537 | ||
6538 | /* Returns an eviction group within 'table' with the given 'id', creating one | |
6539 | * if necessary. */ | |
6540 | static struct eviction_group * | |
6541 | eviction_group_find(struct oftable *table, uint32_t id) | |
15aaf599 | 6542 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6543 | { |
6544 | struct eviction_group *evg; | |
6545 | ||
6546 | HMAP_FOR_EACH_WITH_HASH (evg, id_node, id, &table->eviction_groups_by_id) { | |
6547 | return evg; | |
6548 | } | |
6549 | ||
6550 | evg = xmalloc(sizeof *evg); | |
6551 | hmap_insert(&table->eviction_groups_by_id, &evg->id_node, id); | |
6552 | heap_insert(&table->eviction_groups_by_size, &evg->size_node, | |
6553 | eviction_group_priority(0)); | |
6554 | heap_init(&evg->rules); | |
6555 | ||
6556 | return evg; | |
6557 | } | |
6558 | ||
6559 | /* Returns an eviction priority for 'rule'. The return value should be | |
6560 | * interpreted so that higher priorities make a rule more attractive candidates | |
6561 | * for eviction. */ | |
6562 | static uint32_t | |
6563 | rule_eviction_priority(struct rule *rule) | |
15aaf599 | 6564 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6565 | { |
6566 | long long int hard_expiration; | |
6567 | long long int idle_expiration; | |
6568 | long long int expiration; | |
6569 | uint32_t expiration_offset; | |
6570 | ||
6571 | /* Calculate time of expiration. */ | |
d10976b7 | 6572 | ovs_mutex_lock(&rule->mutex); |
254750ce BP |
6573 | hard_expiration = (rule->hard_timeout |
6574 | ? rule->modified + rule->hard_timeout * 1000 | |
6575 | : LLONG_MAX); | |
6576 | idle_expiration = (rule->idle_timeout | |
6577 | ? rule->used + rule->idle_timeout * 1000 | |
6578 | : LLONG_MAX); | |
6579 | expiration = MIN(hard_expiration, idle_expiration); | |
d10976b7 | 6580 | ovs_mutex_unlock(&rule->mutex); |
254750ce BP |
6581 | if (expiration == LLONG_MAX) { |
6582 | return 0; | |
6583 | } | |
6584 | ||
6585 | /* Calculate the time of expiration as a number of (approximate) seconds | |
6586 | * after program startup. | |
6587 | * | |
6588 | * This should work OK for program runs that last UINT32_MAX seconds or | |
6589 | * less. Therefore, please restart OVS at least once every 136 years. */ | |
6590 | expiration_offset = (expiration >> 10) - (time_boot_msec() >> 10); | |
6591 | ||
6592 | /* Invert the expiration offset because we're using a max-heap. */ | |
6593 | return UINT32_MAX - expiration_offset; | |
6594 | } | |
6595 | ||
6596 | /* Adds 'rule' to an appropriate eviction group for its oftable's | |
6597 | * configuration. Does nothing if 'rule''s oftable doesn't have eviction | |
6598 | * enabled, or if 'rule' is a permanent rule (one that will never expire on its | |
6599 | * own). | |
6600 | * | |
6601 | * The caller must ensure that 'rule' is not already in an eviction group. */ | |
6602 | static void | |
6603 | eviction_group_add_rule(struct rule *rule) | |
15aaf599 | 6604 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6605 | { |
6606 | struct ofproto *ofproto = rule->ofproto; | |
6607 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
a3779dbc | 6608 | bool has_timeout; |
254750ce | 6609 | |
d10976b7 | 6610 | ovs_mutex_lock(&rule->mutex); |
a3779dbc | 6611 | has_timeout = rule->hard_timeout || rule->idle_timeout; |
d10976b7 | 6612 | ovs_mutex_unlock(&rule->mutex); |
a3779dbc EJ |
6613 | |
6614 | if (table->eviction_fields && has_timeout) { | |
254750ce BP |
6615 | struct eviction_group *evg; |
6616 | ||
6617 | evg = eviction_group_find(table, eviction_group_hash_rule(rule)); | |
6618 | ||
6619 | rule->eviction_group = evg; | |
6620 | heap_insert(&evg->rules, &rule->evg_node, | |
6621 | rule_eviction_priority(rule)); | |
6622 | eviction_group_resized(table, evg); | |
6623 | } | |
6624 | } | |
6625 | \f | |
d0918789 BP |
6626 | /* oftables. */ |
6627 | ||
6628 | /* Initializes 'table'. */ | |
6629 | static void | |
6630 | oftable_init(struct oftable *table) | |
6631 | { | |
5c67e4af | 6632 | memset(table, 0, sizeof *table); |
476f36e8 | 6633 | classifier_init(&table->cls, flow_segment_u32s); |
ec1c5c7e | 6634 | table->max_flows = UINT_MAX; |
67761761 | 6635 | atomic_init(&table->config, (unsigned int)OFPTC11_TABLE_MISS_CONTROLLER); |
d0918789 BP |
6636 | } |
6637 | ||
254750ce | 6638 | /* Destroys 'table', including its classifier and eviction groups. |
d0918789 BP |
6639 | * |
6640 | * The caller is responsible for freeing 'table' itself. */ | |
6641 | static void | |
6642 | oftable_destroy(struct oftable *table) | |
6643 | { | |
06f81620 | 6644 | fat_rwlock_rdlock(&table->cls.rwlock); |
cb22974d | 6645 | ovs_assert(classifier_is_empty(&table->cls)); |
06f81620 | 6646 | fat_rwlock_unlock(&table->cls.rwlock); |
254750ce | 6647 | oftable_disable_eviction(table); |
d0918789 | 6648 | classifier_destroy(&table->cls); |
254750ce | 6649 | free(table->name); |
c5f81b20 | 6650 | atomic_destroy(&table->config); |
254750ce BP |
6651 | } |
6652 | ||
6653 | /* Changes the name of 'table' to 'name'. If 'name' is NULL or the empty | |
6654 | * string, then 'table' will use its default name. | |
6655 | * | |
6656 | * This only affects the name exposed for a table exposed through the OpenFlow | |
6657 | * OFPST_TABLE (as printed by "ovs-ofctl dump-tables"). */ | |
6658 | static void | |
6659 | oftable_set_name(struct oftable *table, const char *name) | |
6660 | { | |
6661 | if (name && name[0]) { | |
6662 | int len = strnlen(name, OFP_MAX_TABLE_NAME_LEN); | |
6663 | if (!table->name || strncmp(name, table->name, len)) { | |
6664 | free(table->name); | |
6665 | table->name = xmemdup0(name, len); | |
6666 | } | |
6667 | } else { | |
6668 | free(table->name); | |
6669 | table->name = NULL; | |
6670 | } | |
6671 | } | |
6672 | ||
6673 | /* oftables support a choice of two policies when adding a rule would cause the | |
6674 | * number of flows in the table to exceed the configured maximum number: either | |
6675 | * they can refuse to add the new flow or they can evict some existing flow. | |
6676 | * This function configures the former policy on 'table'. */ | |
6677 | static void | |
6678 | oftable_disable_eviction(struct oftable *table) | |
15aaf599 | 6679 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6680 | { |
6681 | if (table->eviction_fields) { | |
6682 | struct eviction_group *evg, *next; | |
6683 | ||
6684 | HMAP_FOR_EACH_SAFE (evg, next, id_node, | |
6685 | &table->eviction_groups_by_id) { | |
6686 | eviction_group_destroy(table, evg); | |
6687 | } | |
6688 | hmap_destroy(&table->eviction_groups_by_id); | |
6689 | heap_destroy(&table->eviction_groups_by_size); | |
6690 | ||
6691 | free(table->eviction_fields); | |
6692 | table->eviction_fields = NULL; | |
6693 | table->n_eviction_fields = 0; | |
6694 | } | |
6695 | } | |
6696 | ||
6697 | /* oftables support a choice of two policies when adding a rule would cause the | |
6698 | * number of flows in the table to exceed the configured maximum number: either | |
6699 | * they can refuse to add the new flow or they can evict some existing flow. | |
6700 | * This function configures the latter policy on 'table', with fairness based | |
6701 | * on the values of the 'n_fields' fields specified in 'fields'. (Specifying | |
6702 | * 'n_fields' as 0 disables fairness.) */ | |
6703 | static void | |
6704 | oftable_enable_eviction(struct oftable *table, | |
6705 | const struct mf_subfield *fields, size_t n_fields) | |
15aaf599 | 6706 | OVS_REQUIRES(ofproto_mutex) |
254750ce BP |
6707 | { |
6708 | struct cls_cursor cursor; | |
6709 | struct rule *rule; | |
6710 | ||
6711 | if (table->eviction_fields | |
6712 | && n_fields == table->n_eviction_fields | |
6713 | && (!n_fields | |
6714 | || !memcmp(fields, table->eviction_fields, | |
6715 | n_fields * sizeof *fields))) { | |
6716 | /* No change. */ | |
6717 | return; | |
6718 | } | |
6719 | ||
6720 | oftable_disable_eviction(table); | |
6721 | ||
6722 | table->n_eviction_fields = n_fields; | |
6723 | table->eviction_fields = xmemdup(fields, n_fields * sizeof *fields); | |
6724 | ||
6725 | table->eviction_group_id_basis = random_uint32(); | |
6726 | hmap_init(&table->eviction_groups_by_id); | |
6727 | heap_init(&table->eviction_groups_by_size); | |
6728 | ||
06f81620 | 6729 | fat_rwlock_rdlock(&table->cls.rwlock); |
254750ce BP |
6730 | cls_cursor_init(&cursor, &table->cls, NULL); |
6731 | CLS_CURSOR_FOR_EACH (rule, cr, &cursor) { | |
6732 | eviction_group_add_rule(rule); | |
6733 | } | |
06f81620 | 6734 | fat_rwlock_unlock(&table->cls.rwlock); |
d0918789 BP |
6735 | } |
6736 | ||
6737 | /* Removes 'rule' from the oftable that contains it. */ | |
6738 | static void | |
8b81d1ef | 6739 | oftable_remove_rule__(struct ofproto *ofproto, struct rule *rule) |
15aaf599 | 6740 | OVS_REQUIRES(ofproto_mutex) |
d0918789 | 6741 | { |
8b81d1ef BP |
6742 | struct classifier *cls = &ofproto->tables[rule->table_id].cls; |
6743 | ||
06f81620 | 6744 | fat_rwlock_wrlock(&cls->rwlock); |
49a0e0eb | 6745 | classifier_remove(cls, CONST_CAST(struct cls_rule *, &rule->cr)); |
06f81620 | 6746 | fat_rwlock_unlock(&cls->rwlock); |
2c916028 | 6747 | |
98eaac36 | 6748 | cookies_remove(ofproto, rule); |
2c916028 | 6749 | |
254750ce | 6750 | eviction_group_remove_rule(rule); |
e503cc19 SH |
6751 | if (!list_is_empty(&rule->expirable)) { |
6752 | list_remove(&rule->expirable); | |
6753 | } | |
9cae45dc JR |
6754 | if (!list_is_empty(&rule->meter_list_node)) { |
6755 | list_remove(&rule->meter_list_node); | |
51b50dfd | 6756 | list_init(&rule->meter_list_node); |
9cae45dc | 6757 | } |
d0918789 BP |
6758 | } |
6759 | ||
0b4f2078 EJ |
6760 | static void |
6761 | oftable_remove_rule(struct rule *rule) | |
15aaf599 | 6762 | OVS_REQUIRES(ofproto_mutex) |
0b4f2078 | 6763 | { |
8b81d1ef | 6764 | oftable_remove_rule__(rule->ofproto, rule); |
0b4f2078 EJ |
6765 | } |
6766 | ||
b277c7cc BP |
6767 | /* Inserts 'rule' into its oftable, which must not already contain any rule for |
6768 | * the same cls_rule. */ | |
6769 | static void | |
6770 | oftable_insert_rule(struct rule *rule) | |
15aaf599 | 6771 | OVS_REQUIRES(ofproto_mutex) |
d0918789 BP |
6772 | { |
6773 | struct ofproto *ofproto = rule->ofproto; | |
6774 | struct oftable *table = &ofproto->tables[rule->table_id]; | |
a3779dbc EJ |
6775 | bool may_expire; |
6776 | ||
d10976b7 | 6777 | ovs_mutex_lock(&rule->mutex); |
a3779dbc | 6778 | may_expire = rule->hard_timeout || rule->idle_timeout; |
d10976b7 | 6779 | ovs_mutex_unlock(&rule->mutex); |
e503cc19 SH |
6780 | |
6781 | if (may_expire) { | |
6782 | list_insert(&ofproto->expirable, &rule->expirable); | |
6783 | } | |
2c916028 | 6784 | |
98eaac36 | 6785 | cookies_insert(ofproto, rule); |
6f00e29b | 6786 | |
65efd2ab JR |
6787 | if (rule->actions->provider_meter_id != UINT32_MAX) { |
6788 | uint32_t meter_id = ofpacts_get_meter(rule->actions->ofpacts, | |
6789 | rule->actions->ofpacts_len); | |
6790 | struct meter *meter = ofproto->meters[meter_id]; | |
9cae45dc JR |
6791 | list_insert(&meter->rules, &rule->meter_list_node); |
6792 | } | |
06f81620 | 6793 | fat_rwlock_wrlock(&table->cls.rwlock); |
49a0e0eb | 6794 | classifier_insert(&table->cls, CONST_CAST(struct cls_rule *, &rule->cr)); |
06f81620 | 6795 | fat_rwlock_unlock(&table->cls.rwlock); |
254750ce | 6796 | eviction_group_add_rule(rule); |
d0918789 BP |
6797 | } |
6798 | \f | |
abe529af | 6799 | /* unixctl commands. */ |
7aa697dd | 6800 | |
abe529af | 6801 | struct ofproto * |
2ac6bedd | 6802 | ofproto_lookup(const char *name) |
7aa697dd | 6803 | { |
2ac6bedd | 6804 | struct ofproto *ofproto; |
7aa697dd | 6805 | |
2ac6bedd BP |
6806 | HMAP_FOR_EACH_WITH_HASH (ofproto, hmap_node, hash_string(name, 0), |
6807 | &all_ofprotos) { | |
6808 | if (!strcmp(ofproto->name, name)) { | |
6809 | return ofproto; | |
6810 | } | |
7aa697dd | 6811 | } |
2ac6bedd | 6812 | return NULL; |
7aa697dd BP |
6813 | } |
6814 | ||
6815 | static void | |
0e15264f BP |
6816 | ofproto_unixctl_list(struct unixctl_conn *conn, int argc OVS_UNUSED, |
6817 | const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED) | |
7aa697dd | 6818 | { |
7aa697dd | 6819 | struct ofproto *ofproto; |
7aa697dd | 6820 | struct ds results; |
7aa697dd | 6821 | |
7aa697dd | 6822 | ds_init(&results); |
2ac6bedd BP |
6823 | HMAP_FOR_EACH (ofproto, hmap_node, &all_ofprotos) { |
6824 | ds_put_format(&results, "%s\n", ofproto->name); | |
7aa697dd | 6825 | } |
bde9f75d | 6826 | unixctl_command_reply(conn, ds_cstr(&results)); |
7aa697dd | 6827 | ds_destroy(&results); |
7aa697dd BP |
6828 | } |
6829 | ||
6830 | static void | |
6831 | ofproto_unixctl_init(void) | |
6832 | { | |
6833 | static bool registered; | |
6834 | if (registered) { | |
6835 | return; | |
6836 | } | |
6837 | registered = true; | |
6838 | ||
0e15264f BP |
6839 | unixctl_command_register("ofproto/list", "", 0, 0, |
6840 | ofproto_unixctl_list, NULL); | |
064af421 | 6841 | } |
52a90c29 BP |
6842 | \f |
6843 | /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.) | |
6844 | * | |
6845 | * This is deprecated. It is only for compatibility with broken device drivers | |
6846 | * in old versions of Linux that do not properly support VLANs when VLAN | |
6847 | * devices are not used. When broken device drivers are no longer in | |
6848 | * widespread use, we will delete these interfaces. */ | |
6849 | ||
6850 | /* Sets a 1-bit in the 4096-bit 'vlan_bitmap' for each VLAN ID that is matched | |
6851 | * (exactly) by an OpenFlow rule in 'ofproto'. */ | |
6852 | void | |
6853 | ofproto_get_vlan_usage(struct ofproto *ofproto, unsigned long int *vlan_bitmap) | |
6854 | { | |
d0918789 | 6855 | const struct oftable *oftable; |
52a90c29 BP |
6856 | |
6857 | free(ofproto->vlan_bitmap); | |
6858 | ofproto->vlan_bitmap = bitmap_allocate(4096); | |
6859 | ofproto->vlans_changed = false; | |
6860 | ||
d0918789 | 6861 | OFPROTO_FOR_EACH_TABLE (oftable, ofproto) { |
03868246 | 6862 | const struct cls_subtable *table; |
52a90c29 | 6863 | |
06f81620 | 6864 | fat_rwlock_rdlock(&oftable->cls.rwlock); |
03868246 | 6865 | HMAP_FOR_EACH (table, hmap_node, &oftable->cls.subtables) { |
5cb7a798 | 6866 | if (minimask_get_vid_mask(&table->mask) == VLAN_VID_MASK) { |
52a90c29 BP |
6867 | const struct cls_rule *rule; |
6868 | ||
6869 | HMAP_FOR_EACH (rule, hmap_node, &table->rules) { | |
5cb7a798 | 6870 | uint16_t vid = miniflow_get_vid(&rule->match.flow); |
52a90c29 BP |
6871 | bitmap_set1(vlan_bitmap, vid); |
6872 | bitmap_set1(ofproto->vlan_bitmap, vid); | |
6873 | } | |
6874 | } | |
6875 | } | |
06f81620 | 6876 | fat_rwlock_unlock(&oftable->cls.rwlock); |
52a90c29 BP |
6877 | } |
6878 | } | |
6879 | ||
6880 | /* Returns true if new VLANs have come into use by the flow table since the | |
6881 | * last call to ofproto_get_vlan_usage(). | |
6882 | * | |
6883 | * We don't track when old VLANs stop being used. */ | |
6884 | bool | |
6885 | ofproto_has_vlan_usage_changed(const struct ofproto *ofproto) | |
6886 | { | |
6887 | return ofproto->vlans_changed; | |
6888 | } | |
6889 | ||
6890 | /* Configures a VLAN splinter binding between the ports identified by OpenFlow | |
6891 | * port numbers 'vlandev_ofp_port' and 'realdev_ofp_port'. If | |
6892 | * 'realdev_ofp_port' is nonzero, then the VLAN device is enslaved to the real | |
6893 | * device as a VLAN splinter for VLAN ID 'vid'. If 'realdev_ofp_port' is zero, | |
6894 | * then the VLAN device is un-enslaved. */ | |
6895 | int | |
4e022ec0 AW |
6896 | ofproto_port_set_realdev(struct ofproto *ofproto, ofp_port_t vlandev_ofp_port, |
6897 | ofp_port_t realdev_ofp_port, int vid) | |
52a90c29 BP |
6898 | { |
6899 | struct ofport *ofport; | |
6900 | int error; | |
6901 | ||
cb22974d | 6902 | ovs_assert(vlandev_ofp_port != realdev_ofp_port); |
52a90c29 BP |
6903 | |
6904 | ofport = ofproto_get_port(ofproto, vlandev_ofp_port); | |
6905 | if (!ofport) { | |
6906 | VLOG_WARN("%s: cannot set realdev on nonexistent port %"PRIu16, | |
6907 | ofproto->name, vlandev_ofp_port); | |
6908 | return EINVAL; | |
6909 | } | |
6910 | ||
6911 | if (!ofproto->ofproto_class->set_realdev) { | |
6912 | if (!vlandev_ofp_port) { | |
6913 | return 0; | |
6914 | } | |
6915 | VLOG_WARN("%s: vlan splinters not supported", ofproto->name); | |
6916 | return EOPNOTSUPP; | |
6917 | } | |
6918 | ||
6919 | error = ofproto->ofproto_class->set_realdev(ofport, realdev_ofp_port, vid); | |
6920 | if (error) { | |
6921 | VLOG_WARN("%s: setting realdev on port %"PRIu16" (%s) failed (%s)", | |
6922 | ofproto->name, vlandev_ofp_port, | |
10a89ef0 | 6923 | netdev_get_name(ofport->netdev), ovs_strerror(error)); |
52a90c29 BP |
6924 | } |
6925 | return error; | |
6926 | } |