]> git.proxmox.com Git - ovs.git/blame - ofproto/ofproto.c
ofproto: Factor out ofproto_rule_create().
[ovs.git] / ofproto / ofproto.c
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064af421 1/*
3fbbcba7 2 * Copyright (c) 2009-2015 Nicira, Inc.
43253595 3 * Copyright (c) 2010 Jean Tourrilhes - HP-Labs.
064af421 4 *
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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 *
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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.
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16 */
17
18#include <config.h>
19#include "ofproto.h"
20#include <errno.h>
21#include <inttypes.h>
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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"
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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"
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44#include "openflow/nicira-ext.h"
45#include "openflow/openflow.h"
06a0f3e2 46#include "ovs-rcu.h"
cf62fa4c 47#include "dp-packet.h"
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48#include "packets.h"
49#include "pinsched.h"
50#include "pktbuf.h"
51#include "poll-loop.h"
254750ce 52#include "random.h"
da4a6191 53#include "seq.h"
064af421 54#include "shash.h"
0d085684 55#include "simap.h"
e8f9a7bb 56#include "smap.h"
b3c01ed3 57#include "sset.h"
064af421 58#include "timeval.h"
c4617b3c 59#include "unaligned.h"
4f2cad2c 60#include "unixctl.h"
e6211adc 61#include "openvswitch/vlog.h"
777af88d 62#include "bundles.h"
064af421 63
d98e6007 64VLOG_DEFINE_THIS_MODULE(ofproto);
064af421 65
d76f09ea 66COVERAGE_DEFINE(ofproto_flush);
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67COVERAGE_DEFINE(ofproto_packet_out);
68COVERAGE_DEFINE(ofproto_queue_req);
69COVERAGE_DEFINE(ofproto_recv_openflow);
70COVERAGE_DEFINE(ofproto_reinit_ports);
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71COVERAGE_DEFINE(ofproto_update_port);
72
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73/* Default fields to use for prefix tries in each flow table, unless something
74 * else is configured. */
75const enum mf_field_id default_prefix_fields[2] =
76 { MFF_IPV4_DST, MFF_IPV4_SRC };
77
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78/* oftable. */
79static void oftable_init(struct oftable *);
80static void oftable_destroy(struct oftable *);
878ae780 81
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82static void oftable_set_name(struct oftable *, const char *name);
83
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84static enum ofperr evict_rules_from_table(struct oftable *,
85 unsigned int extra_space)
86 OVS_REQUIRES(ofproto_mutex);
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87static void oftable_disable_eviction(struct oftable *);
88static void oftable_enable_eviction(struct oftable *,
89 const struct mf_subfield *fields,
90 size_t n_fields);
91
15aaf599 92static void oftable_remove_rule(struct rule *rule) OVS_REQUIRES(ofproto_mutex);
064af421 93
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94/* A set of rules within a single OpenFlow table (oftable) that have the same
95 * values for the oftable's eviction_fields. A rule to be evicted, when one is
96 * needed, is taken from the eviction group that contains the greatest number
97 * of rules.
98 *
99 * An oftable owns any number of eviction groups, each of which contains any
100 * number of rules.
101 *
102 * Membership in an eviction group is imprecise, based on the hash of the
103 * oftable's eviction_fields (in the eviction_group's id_node.hash member).
104 * That is, if two rules have different eviction_fields, but those
105 * eviction_fields hash to the same value, then they will belong to the same
106 * eviction_group anyway.
107 *
108 * (When eviction is not enabled on an oftable, we don't track any eviction
109 * groups, to save time and space.) */
110struct eviction_group {
111 struct hmap_node id_node; /* In oftable's "eviction_groups_by_id". */
112 struct heap_node size_node; /* In oftable's "eviction_groups_by_size". */
113 struct heap rules; /* Contains "struct rule"s. */
114};
115
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116static bool choose_rule_to_evict(struct oftable *table, struct rule **rulep)
117 OVS_REQUIRES(ofproto_mutex);
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118static uint32_t rule_eviction_priority(struct ofproto *ofproto, struct rule *)
119 OVS_REQUIRES(ofproto_mutex);;
120static void eviction_group_add_rule(struct rule *)
121 OVS_REQUIRES(ofproto_mutex);
122static void eviction_group_remove_rule(struct rule *)
123 OVS_REQUIRES(ofproto_mutex);
f29152ca 124
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125/* Criteria that flow_mod and other operations use for selecting rules on
126 * which to operate. */
127struct rule_criteria {
128 /* An OpenFlow table or 255 for all tables. */
129 uint8_t table_id;
130
131 /* OpenFlow matching criteria. Interpreted different in "loose" way by
132 * collect_rules_loose() and "strict" way by collect_rules_strict(), as
133 * defined in the OpenFlow spec. */
134 struct cls_rule cr;
135
136 /* Matching criteria for the OpenFlow cookie. Consider a bit B in a rule's
137 * cookie and the corresponding bits C in 'cookie' and M in 'cookie_mask'.
138 * The rule will not be selected if M is 1 and B != C. */
139 ovs_be64 cookie;
140 ovs_be64 cookie_mask;
141
142 /* Selection based on actions within a rule:
143 *
144 * If out_port != OFPP_ANY, selects only rules that output to out_port.
145 * If out_group != OFPG_ALL, select only rules that output to out_group. */
146 ofp_port_t out_port;
147 uint32_t out_group;
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148
149 /* If true, collects only rules that are modifiable. */
150 bool include_hidden;
151 bool include_readonly;
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152};
153
154static void rule_criteria_init(struct rule_criteria *, uint8_t table_id,
eb391b76 155 const struct match *match, int priority,
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156 ovs_be64 cookie, ovs_be64 cookie_mask,
157 ofp_port_t out_port, uint32_t out_group);
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158static void rule_criteria_require_rw(struct rule_criteria *,
159 bool can_write_readonly);
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160static void rule_criteria_destroy(struct rule_criteria *);
161
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162static enum ofperr collect_rules_loose(struct ofproto *,
163 const struct rule_criteria *,
164 struct rule_collection *);
165
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166/* A packet that needs to be passed to rule_execute().
167 *
168 * (We can't do this immediately from ofopgroup_complete() because that holds
169 * ofproto_mutex, which rule_execute() needs released.) */
35412852 170struct rule_execute {
ca6ba700 171 struct ovs_list list_node; /* In struct ofproto's "rule_executes" list. */
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172 struct rule *rule; /* Owns a reference to the rule. */
173 ofp_port_t in_port;
cf62fa4c 174 struct dp_packet *packet; /* Owns the packet. */
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175};
176
15aaf599 177static void run_rule_executes(struct ofproto *) OVS_EXCLUDED(ofproto_mutex);
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178static void destroy_rule_executes(struct ofproto *);
179
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180struct learned_cookie {
181 union {
182 /* In struct ofproto's 'learned_cookies' hmap. */
183 struct hmap_node hmap_node OVS_GUARDED_BY(ofproto_mutex);
184
185 /* In 'dead_cookies' list when removed from hmap. */
ca6ba700 186 struct ovs_list list_node;
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187 } u;
188
189 /* Key. */
190 ovs_be64 cookie OVS_GUARDED_BY(ofproto_mutex);
191 uint8_t table_id OVS_GUARDED_BY(ofproto_mutex);
192
193 /* Number of references from "learn" actions.
194 *
195 * When this drops to 0, all of the flows in 'table_id' with the specified
196 * 'cookie' are deleted. */
197 int n OVS_GUARDED_BY(ofproto_mutex);
198};
199
200static const struct ofpact_learn *next_learn_with_delete(
201 const struct rule_actions *, const struct ofpact_learn *start);
202
203static void learned_cookies_inc(struct ofproto *, const struct rule_actions *)
204 OVS_REQUIRES(ofproto_mutex);
205static void learned_cookies_dec(struct ofproto *, const struct rule_actions *,
ca6ba700 206 struct ovs_list *dead_cookies)
35f48b8b 207 OVS_REQUIRES(ofproto_mutex);
ca6ba700 208static void learned_cookies_flush(struct ofproto *, struct ovs_list *dead_cookies)
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209 OVS_REQUIRES(ofproto_mutex);
210
d0918789 211/* ofport. */
15aaf599 212static void ofport_destroy__(struct ofport *) OVS_EXCLUDED(ofproto_mutex);
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213static void ofport_destroy(struct ofport *);
214
215static void update_port(struct ofproto *, const char *devname);
216static int init_ports(struct ofproto *);
217static void reinit_ports(struct ofproto *);
7ee20df1 218
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219static long long int ofport_get_usage(const struct ofproto *,
220 ofp_port_t ofp_port);
221static void ofport_set_usage(struct ofproto *, ofp_port_t ofp_port,
222 long long int last_used);
865b26a4 223static void ofport_remove_usage(struct ofproto *, ofp_port_t ofp_port);
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224
225/* Ofport usage.
226 *
227 * Keeps track of the currently used and recently used ofport values and is
228 * used to prevent immediate recycling of ofport values. */
229struct ofport_usage {
230 struct hmap_node hmap_node; /* In struct ofproto's "ofport_usage" hmap. */
231 ofp_port_t ofp_port; /* OpenFlow port number. */
232 long long int last_used; /* Last time the 'ofp_port' was used. LLONG_MAX
233 represents in-use ofports. */
234};
235
254750ce 236/* rule. */
254750ce 237static void ofproto_rule_send_removed(struct rule *, uint8_t reason);
834fe5cb 238static bool rule_is_readonly(const struct rule *);
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239static void ofproto_rule_insert__(struct ofproto *, struct rule *)
240 OVS_REQUIRES(ofproto_mutex);
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241static void ofproto_rule_remove__(struct ofproto *, struct rule *)
242 OVS_REQUIRES(ofproto_mutex);
254750ce 243
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244/* The source of a flow_mod request, in the code that processes flow_mods.
245 *
246 * A flow table modification request can be generated externally, via OpenFlow,
247 * or internally through a function call. This structure indicates the source
248 * of an OpenFlow-generated flow_mod. For an internal flow_mod, it isn't
249 * meaningful and thus supplied as NULL. */
250struct flow_mod_requester {
251 struct ofconn *ofconn; /* Connection on which flow_mod arrived. */
834fe5cb 252 ovs_be32 xid; /* OpenFlow xid of flow_mod request. */
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253};
254
d0918789 255/* OpenFlow. */
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256static enum ofperr add_flow(struct ofproto *, struct ofputil_flow_mod *,
257 const struct flow_mod_requester *);
258
259static enum ofperr modify_flows__(struct ofproto *, struct ofputil_flow_mod *,
260 const struct rule_collection *,
261 const struct flow_mod_requester *);
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262static void delete_flows__(const struct rule_collection *,
263 enum ofp_flow_removed_reason,
264 const struct flow_mod_requester *)
15aaf599 265 OVS_REQUIRES(ofproto_mutex);
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266
267static enum ofperr send_buffered_packet(struct ofconn *, uint32_t buffer_id,
268 struct rule *)
269 OVS_REQUIRES(ofproto_mutex);
270
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271static bool ofproto_group_exists__(const struct ofproto *ofproto,
272 uint32_t group_id)
273 OVS_REQ_RDLOCK(ofproto->groups_rwlock);
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274static bool ofproto_group_exists(const struct ofproto *ofproto,
275 uint32_t group_id)
7e9f8266 276 OVS_EXCLUDED(ofproto->groups_rwlock);
7395c052 277static enum ofperr add_group(struct ofproto *, struct ofputil_group_mod *);
b20f4073 278static void handle_openflow(struct ofconn *, const struct ofpbuf *);
baae3d02 279static enum ofperr handle_flow_mod__(struct ofproto *,
e3b56933 280 struct ofputil_flow_mod *,
baae3d02 281 const struct flow_mod_requester *)
15aaf599 282 OVS_EXCLUDED(ofproto_mutex);
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283static void calc_duration(long long int start, long long int now,
284 uint32_t *sec, uint32_t *nsec);
f29152ca 285
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286/* ofproto. */
287static uint64_t pick_datapath_id(const struct ofproto *);
288static uint64_t pick_fallback_dpid(void);
289static void ofproto_destroy__(struct ofproto *);
ada3428f 290static void update_mtu(struct ofproto *, struct ofport *);
6b3f7f02 291static void meter_delete(struct ofproto *, uint32_t first, uint32_t last);
062fea06 292static void meter_insert_rule(struct rule *);
f29152ca 293
d0918789 294/* unixctl. */
abe529af 295static void ofproto_unixctl_init(void);
f29152ca 296
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297/* All registered ofproto classes, in probe order. */
298static const struct ofproto_class **ofproto_classes;
299static size_t n_ofproto_classes;
300static size_t allocated_ofproto_classes;
7aa697dd 301
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302/* Global lock that protects all flow table operations. */
303struct ovs_mutex ofproto_mutex = OVS_MUTEX_INITIALIZER;
abe7b10f 304
e79a6c83 305unsigned ofproto_flow_limit = OFPROTO_FLOW_LIMIT_DEFAULT;
72310b04 306unsigned ofproto_max_idle = OFPROTO_MAX_IDLE_DEFAULT;
380f49c4 307
e79a6c83 308size_t n_handlers, n_revalidators;
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309size_t n_dpdk_rxqs;
310char *pmd_cpu_mask;
6567010f 311
f797957a 312/* Map from datapath name to struct ofproto, for use by unixctl commands. */
abe529af 313static struct hmap all_ofprotos = HMAP_INITIALIZER(&all_ofprotos);
ebe482fd 314
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315/* Initial mappings of port to OpenFlow number mappings. */
316static struct shash init_ofp_ports = SHASH_INITIALIZER(&init_ofp_ports);
317
abe529af 318static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
f29152ca 319
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320/* The default value of true waits for flow restore. */
321static bool flow_restore_wait = true;
322
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323/* Must be called to initialize the ofproto library.
324 *
325 * The caller may pass in 'iface_hints', which contains an shash of
326 * "iface_hint" elements indexed by the interface's name. The provider
327 * may use these hints to describe the startup configuration in order to
328 * reinitialize its state. The caller owns the provided data, so a
329 * provider will make copies of anything required. An ofproto provider
330 * will remove any existing state that is not described by the hint, and
331 * may choose to remove it all. */
332void
333ofproto_init(const struct shash *iface_hints)
abe529af 334{
e1b1d06a 335 struct shash_node *node;
b0408fca 336 size_t i;
f29152ca 337
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338 ofproto_class_register(&ofproto_dpif_class);
339
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340 /* Make a local copy, since we don't own 'iface_hints' elements. */
341 SHASH_FOR_EACH(node, iface_hints) {
342 const struct iface_hint *orig_hint = node->data;
343 struct iface_hint *new_hint = xmalloc(sizeof *new_hint);
344 const char *br_type = ofproto_normalize_type(orig_hint->br_type);
345
346 new_hint->br_name = xstrdup(orig_hint->br_name);
347 new_hint->br_type = xstrdup(br_type);
348 new_hint->ofp_port = orig_hint->ofp_port;
349
350 shash_add(&init_ofp_ports, node->name, new_hint);
351 }
352
b0408fca 353 for (i = 0; i < n_ofproto_classes; i++) {
e1b1d06a 354 ofproto_classes[i]->init(&init_ofp_ports);
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355 }
356}
f29152ca 357
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358/* 'type' should be a normalized datapath type, as returned by
359 * ofproto_normalize_type(). Returns the corresponding ofproto_class
360 * structure, or a null pointer if there is none registered for 'type'. */
361static const struct ofproto_class *
362ofproto_class_find__(const char *type)
363{
364 size_t i;
f29152ca 365
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366 for (i = 0; i < n_ofproto_classes; i++) {
367 const struct ofproto_class *class = ofproto_classes[i];
368 struct sset types;
369 bool found;
064af421 370
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371 sset_init(&types);
372 class->enumerate_types(&types);
373 found = sset_contains(&types, type);
374 sset_destroy(&types);
bcf84111 375
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376 if (found) {
377 return class;
378 }
379 }
380 VLOG_WARN("unknown datapath type %s", type);
381 return NULL;
382}
064af421 383
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384/* Registers a new ofproto class. After successful registration, new ofprotos
385 * of that type can be created using ofproto_create(). */
386int
387ofproto_class_register(const struct ofproto_class *new_class)
388{
389 size_t i;
7aa697dd 390
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391 for (i = 0; i < n_ofproto_classes; i++) {
392 if (ofproto_classes[i] == new_class) {
393 return EEXIST;
394 }
395 }
064af421 396
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397 if (n_ofproto_classes >= allocated_ofproto_classes) {
398 ofproto_classes = x2nrealloc(ofproto_classes,
399 &allocated_ofproto_classes,
400 sizeof *ofproto_classes);
401 }
402 ofproto_classes[n_ofproto_classes++] = new_class;
403 return 0;
404}
064af421 405
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406/* Unregisters a datapath provider. 'type' must have been previously
407 * registered and not currently be in use by any ofprotos. After
408 * unregistration new datapaths of that type cannot be opened using
409 * ofproto_create(). */
410int
411ofproto_class_unregister(const struct ofproto_class *class)
412{
413 size_t i;
76ce9432 414
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415 for (i = 0; i < n_ofproto_classes; i++) {
416 if (ofproto_classes[i] == class) {
417 for (i++; i < n_ofproto_classes; i++) {
418 ofproto_classes[i - 1] = ofproto_classes[i];
419 }
420 n_ofproto_classes--;
421 return 0;
422 }
423 }
424 VLOG_WARN("attempted to unregister an ofproto class that is not "
425 "registered");
426 return EAFNOSUPPORT;
427}
4a4cdb3b 428
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429/* Clears 'types' and enumerates all registered ofproto types into it. The
430 * caller must first initialize the sset. */
431void
432ofproto_enumerate_types(struct sset *types)
433{
abe529af 434 size_t i;
064af421 435
c799c306 436 sset_clear(types);
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437 for (i = 0; i < n_ofproto_classes; i++) {
438 ofproto_classes[i]->enumerate_types(types);
439 }
f79e673f 440}
064af421 441
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442/* Returns the fully spelled out name for the given ofproto 'type'.
443 *
444 * Normalized type string can be compared with strcmp(). Unnormalized type
445 * string might be the same even if they have different spellings. */
446const char *
447ofproto_normalize_type(const char *type)
448{
abe529af 449 return type && type[0] ? type : "system";
f79e673f 450}
064af421 451
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452/* Clears 'names' and enumerates the names of all known created ofprotos with
453 * the given 'type'. The caller must first initialize the sset. Returns 0 if
454 * successful, otherwise a positive errno value.
455 *
456 * Some kinds of datapaths might not be practically enumerable. This is not
457 * considered an error. */
458int
459ofproto_enumerate_names(const char *type, struct sset *names)
460{
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461 const struct ofproto_class *class = ofproto_class_find__(type);
462 return class ? class->enumerate_names(type, names) : EAFNOSUPPORT;
239ad7d1 463}
7aa697dd 464
064af421 465int
abe529af 466ofproto_create(const char *datapath_name, const char *datapath_type,
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467 struct ofproto **ofprotop)
468{
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469 const struct ofproto_class *class;
470 struct ofproto *ofproto;
064af421 471 int error;
c2f0373a 472 int i;
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473
474 *ofprotop = NULL;
475
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476 ofproto_unixctl_init();
477
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478 datapath_type = ofproto_normalize_type(datapath_type);
479 class = ofproto_class_find__(datapath_type);
480 if (!class) {
481 VLOG_WARN("could not create datapath %s of unknown type %s",
482 datapath_name, datapath_type);
483 return EAFNOSUPPORT;
064af421
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484 }
485
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486 ofproto = class->alloc();
487 if (!ofproto) {
488 VLOG_ERR("failed to allocate datapath %s of type %s",
489 datapath_name, datapath_type);
490 return ENOMEM;
491 }
492
493 /* Initialize. */
abe7b10f 494 ovs_mutex_lock(&ofproto_mutex);
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495 memset(ofproto, 0, sizeof *ofproto);
496 ofproto->ofproto_class = class;
497 ofproto->name = xstrdup(datapath_name);
498 ofproto->type = xstrdup(datapath_type);
499 hmap_insert(&all_ofprotos, &ofproto->hmap_node,
500 hash_string(ofproto->name, 0));
501 ofproto->datapath_id = 0;
8402c74b 502 ofproto->forward_bpdu = false;
abe529af 503 ofproto->fallback_dpid = pick_fallback_dpid();
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504 ofproto->mfr_desc = NULL;
505 ofproto->hw_desc = NULL;
506 ofproto->sw_desc = NULL;
507 ofproto->serial_desc = NULL;
508 ofproto->dp_desc = NULL;
7257b535 509 ofproto->frag_handling = OFPC_FRAG_NORMAL;
abe529af 510 hmap_init(&ofproto->ports);
fdcea803 511 hmap_init(&ofproto->ofport_usage);
abe529af 512 shash_init(&ofproto->port_by_name);
e1b1d06a 513 simap_init(&ofproto->ofp_requests);
430dbb14 514 ofproto->max_ports = ofp_to_u16(OFPP_MAX);
448c2fa8 515 ofproto->eviction_group_timer = LLONG_MIN;
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516 ofproto->tables = NULL;
517 ofproto->n_tables = 0;
98eaac36 518 hindex_init(&ofproto->cookies);
35f48b8b 519 hmap_init(&ofproto->learned_cookies);
e503cc19 520 list_init(&ofproto->expirable);
abe529af 521 ofproto->connmgr = connmgr_create(ofproto, datapath_name, datapath_name);
35412852 522 guarded_list_init(&ofproto->rule_executes);
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523 ofproto->vlan_bitmap = NULL;
524 ofproto->vlans_changed = false;
ada3428f 525 ofproto->min_mtu = INT_MAX;
7395c052
NZ
526 ovs_rwlock_init(&ofproto->groups_rwlock);
527 hmap_init(&ofproto->groups);
abe7b10f 528 ovs_mutex_unlock(&ofproto_mutex);
0ae01c64 529 ofproto->ogf.types = 0xf;
7cb279c2
SH
530 ofproto->ogf.capabilities = OFPGFC_CHAINING | OFPGFC_SELECT_LIVENESS |
531 OFPGFC_SELECT_WEIGHT;
08d1e234
BP
532 for (i = 0; i < 4; i++) {
533 ofproto->ogf.max_groups[i] = OFPG_MAX;
534 ofproto->ogf.ofpacts[i] = (UINT64_C(1) << N_OFPACTS) - 1;
535 }
abe529af 536
0f5f95a9 537 error = ofproto->ofproto_class->construct(ofproto);
19a87e36 538 if (error) {
abe529af 539 VLOG_ERR("failed to open datapath %s: %s",
10a89ef0 540 datapath_name, ovs_strerror(error));
58f19539 541 connmgr_destroy(ofproto->connmgr);
abe529af 542 ofproto_destroy__(ofproto);
19a87e36
BP
543 return error;
544 }
073e2a6f 545
c2f0373a 546 /* Check that hidden tables, if any, are at the end. */
cb22974d 547 ovs_assert(ofproto->n_tables);
c2f0373a
BP
548 for (i = 0; i + 1 < ofproto->n_tables; i++) {
549 enum oftable_flags flags = ofproto->tables[i].flags;
550 enum oftable_flags next_flags = ofproto->tables[i + 1].flags;
551
cb22974d 552 ovs_assert(!(flags & OFTABLE_HIDDEN) || next_flags & OFTABLE_HIDDEN);
c2f0373a 553 }
19a87e36 554
abe529af 555 ofproto->datapath_id = pick_datapath_id(ofproto);
abe529af 556 init_ports(ofproto);
7aa697dd 557
9cae45dc
JR
558 /* Initialize meters table. */
559 if (ofproto->ofproto_class->meter_get_features) {
560 ofproto->ofproto_class->meter_get_features(ofproto,
561 &ofproto->meter_features);
562 } else {
563 memset(&ofproto->meter_features, 0, sizeof ofproto->meter_features);
564 }
565 ofproto->meters = xzalloc((ofproto->meter_features.max_meters + 1)
566 * sizeof(struct meter *));
567
abe529af 568 *ofprotop = ofproto;
064af421
BP
569 return 0;
570}
571
91858960
BP
572/* Must be called (only) by an ofproto implementation in its constructor
573 * function. See the large comment on 'construct' in struct ofproto_class for
574 * details. */
0f5f95a9
BP
575void
576ofproto_init_tables(struct ofproto *ofproto, int n_tables)
577{
578 struct oftable *table;
579
cb22974d
BP
580 ovs_assert(!ofproto->n_tables);
581 ovs_assert(n_tables >= 1 && n_tables <= 255);
0f5f95a9
BP
582
583 ofproto->n_tables = n_tables;
584 ofproto->tables = xmalloc(n_tables * sizeof *ofproto->tables);
585 OFPROTO_FOR_EACH_TABLE (table, ofproto) {
586 oftable_init(table);
587 }
588}
589
91858960
BP
590/* To be optionally called (only) by an ofproto implementation in its
591 * constructor function. See the large comment on 'construct' in struct
592 * ofproto_class for details.
593 *
594 * Sets the maximum number of ports to 'max_ports'. The ofproto generic layer
595 * will then ensure that actions passed into the ofproto implementation will
596 * not refer to OpenFlow ports numbered 'max_ports' or higher. If this
597 * function is not called, there will be no such restriction.
598 *
599 * Reserved ports numbered OFPP_MAX and higher are special and not subject to
600 * the 'max_ports' restriction. */
601void
430dbb14 602ofproto_init_max_ports(struct ofproto *ofproto, uint16_t max_ports)
91858960 603{
430dbb14 604 ovs_assert(max_ports <= ofp_to_u16(OFPP_MAX));
91858960
BP
605 ofproto->max_ports = max_ports;
606}
607
e825ace2
BP
608uint64_t
609ofproto_get_datapath_id(const struct ofproto *ofproto)
610{
611 return ofproto->datapath_id;
612}
613
064af421
BP
614void
615ofproto_set_datapath_id(struct ofproto *p, uint64_t datapath_id)
616{
617 uint64_t old_dpid = p->datapath_id;
fa60c019 618 p->datapath_id = datapath_id ? datapath_id : pick_datapath_id(p);
064af421 619 if (p->datapath_id != old_dpid) {
76ce9432
BP
620 /* Force all active connections to reconnect, since there is no way to
621 * notify a controller that the datapath ID has changed. */
fa05809b 622 ofproto_reconnect_controllers(p);
064af421
BP
623 }
624}
625
76ce9432
BP
626void
627ofproto_set_controllers(struct ofproto *p,
628 const struct ofproto_controller *controllers,
1d9ffc17 629 size_t n_controllers, uint32_t allowed_versions)
76ce9432 630{
1d9ffc17
SH
631 connmgr_set_controllers(p->connmgr, controllers, n_controllers,
632 allowed_versions);
064af421
BP
633}
634
31681a5d
JP
635void
636ofproto_set_fail_mode(struct ofproto *p, enum ofproto_fail_mode fail_mode)
637{
19a87e36 638 connmgr_set_fail_mode(p->connmgr, fail_mode);
31681a5d
JP
639}
640
fa05809b
BP
641/* Drops the connections between 'ofproto' and all of its controllers, forcing
642 * them to reconnect. */
643void
644ofproto_reconnect_controllers(struct ofproto *ofproto)
645{
19a87e36 646 connmgr_reconnect(ofproto->connmgr);
917e50e1
BP
647}
648
649/* Sets the 'n' TCP port addresses in 'extras' as ones to which 'ofproto''s
650 * in-band control should guarantee access, in the same way that in-band
651 * control guarantees access to OpenFlow controllers. */
652void
653ofproto_set_extra_in_band_remotes(struct ofproto *ofproto,
654 const struct sockaddr_in *extras, size_t n)
655{
19a87e36 656 connmgr_set_extra_in_band_remotes(ofproto->connmgr, extras, n);
917e50e1
BP
657}
658
b1da6250
BP
659/* Sets the OpenFlow queue used by flows set up by in-band control on
660 * 'ofproto' to 'queue_id'. If 'queue_id' is negative, then in-band control
661 * flows will use the default queue. */
662void
663ofproto_set_in_band_queue(struct ofproto *ofproto, int queue_id)
664{
19a87e36 665 connmgr_set_in_band_queue(ofproto->connmgr, queue_id);
b1da6250
BP
666}
667
084f5290
SH
668/* Sets the number of flows at which eviction from the kernel flow table
669 * will occur. */
670void
e79a6c83 671ofproto_set_flow_limit(unsigned limit)
084f5290 672{
e79a6c83 673 ofproto_flow_limit = limit;
084f5290
SH
674}
675
72310b04
JS
676/* Sets the maximum idle time for flows in the datapath before they are
677 * expired. */
678void
679ofproto_set_max_idle(unsigned max_idle)
680{
681 ofproto_max_idle = max_idle;
682}
683
b53055f4 684/* If forward_bpdu is true, the NORMAL action will forward frames with
8402c74b
SS
685 * reserved (e.g. STP) destination Ethernet addresses. if forward_bpdu is false,
686 * the NORMAL action will drop these frames. */
687void
688ofproto_set_forward_bpdu(struct ofproto *ofproto, bool forward_bpdu)
689{
690 bool old_val = ofproto->forward_bpdu;
691 ofproto->forward_bpdu = forward_bpdu;
692 if (old_val != ofproto->forward_bpdu) {
693 if (ofproto->ofproto_class->forward_bpdu_changed) {
694 ofproto->ofproto_class->forward_bpdu_changed(ofproto);
695 }
b53055f4 696 }
8402c74b
SS
697}
698
e764773c 699/* Sets the MAC aging timeout for the OFPP_NORMAL action on 'ofproto' to
c4069512
BP
700 * 'idle_time', in seconds, and the maximum number of MAC table entries to
701 * 'max_entries'. */
e764773c 702void
c4069512
BP
703ofproto_set_mac_table_config(struct ofproto *ofproto, unsigned idle_time,
704 size_t max_entries)
e764773c 705{
c4069512
BP
706 if (ofproto->ofproto_class->set_mac_table_config) {
707 ofproto->ofproto_class->set_mac_table_config(ofproto, idle_time,
708 max_entries);
e764773c
BP
709 }
710}
711
7c38d0a5
FL
712/* Multicast snooping configuration. */
713
714/* Configures multicast snooping on 'ofproto' using the settings
715 * defined in 's'. If 's' is NULL, disables multicast snooping.
716 *
717 * Returns 0 if successful, otherwise a positive errno value. */
718int
719ofproto_set_mcast_snooping(struct ofproto *ofproto,
720 const struct ofproto_mcast_snooping_settings *s)
721{
722 return (ofproto->ofproto_class->set_mcast_snooping
723 ? ofproto->ofproto_class->set_mcast_snooping(ofproto, s)
724 : EOPNOTSUPP);
725}
726
8e04a33f 727/* Configures multicast snooping flood settings on 'ofp_port' of 'ofproto'.
7c38d0a5
FL
728 *
729 * Returns 0 if successful, otherwise a positive errno value.*/
730int
8e04a33f
FL
731ofproto_port_set_mcast_snooping(struct ofproto *ofproto, void *aux,
732 const struct ofproto_mcast_snooping_port_settings *s)
7c38d0a5
FL
733{
734 return (ofproto->ofproto_class->set_mcast_snooping_port
8e04a33f 735 ? ofproto->ofproto_class->set_mcast_snooping_port(ofproto, aux, s)
7c38d0a5
FL
736 : EOPNOTSUPP);
737}
738
f2eee189
AW
739void
740ofproto_set_n_dpdk_rxqs(int n_rxqs)
741{
742 n_dpdk_rxqs = MAX(n_rxqs, 0);
743}
744
745void
746ofproto_set_cpu_mask(const char *cmask)
747{
748 free(pmd_cpu_mask);
749
750 pmd_cpu_mask = cmask ? xstrdup(cmask) : NULL;
751}
752
448a4b2f 753void
30ea0da7 754ofproto_set_threads(int n_handlers_, int n_revalidators_)
448a4b2f 755{
e79a6c83
EJ
756 int threads = MAX(count_cpu_cores(), 2);
757
30ea0da7
GS
758 n_revalidators = MAX(n_revalidators_, 0);
759 n_handlers = MAX(n_handlers_, 0);
e79a6c83
EJ
760
761 if (!n_revalidators) {
762 n_revalidators = n_handlers
763 ? MAX(threads - (int) n_handlers, 1)
764 : threads / 4 + 1;
765 }
766
767 if (!n_handlers) {
768 n_handlers = MAX(threads - (int) n_revalidators, 1);
769 }
448a4b2f
AW
770}
771
8b6ff729
BP
772void
773ofproto_set_dp_desc(struct ofproto *p, const char *dp_desc)
774{
775 free(p->dp_desc);
776 p->dp_desc = dp_desc ? xstrdup(dp_desc) : NULL;
777}
778
064af421 779int
81e2083f 780ofproto_set_snoops(struct ofproto *ofproto, const struct sset *snoops)
064af421 781{
19a87e36 782 return connmgr_set_snoops(ofproto->connmgr, snoops);
064af421
BP
783}
784
785int
0193b2af
JG
786ofproto_set_netflow(struct ofproto *ofproto,
787 const struct netflow_options *nf_options)
064af421 788{
abe529af
BP
789 if (nf_options && sset_is_empty(&nf_options->collectors)) {
790 nf_options = NULL;
791 }
792
793 if (ofproto->ofproto_class->set_netflow) {
794 return ofproto->ofproto_class->set_netflow(ofproto, nf_options);
064af421 795 } else {
abe529af 796 return nf_options ? EOPNOTSUPP : 0;
064af421
BP
797 }
798}
799
abe529af 800int
72b06300
BP
801ofproto_set_sflow(struct ofproto *ofproto,
802 const struct ofproto_sflow_options *oso)
803{
abe529af
BP
804 if (oso && sset_is_empty(&oso->targets)) {
805 oso = NULL;
806 }
72b06300 807
abe529af
BP
808 if (ofproto->ofproto_class->set_sflow) {
809 return ofproto->ofproto_class->set_sflow(ofproto, oso);
72b06300 810 } else {
abe529af 811 return oso ? EOPNOTSUPP : 0;
72b06300
BP
812 }
813}
29089a54
RL
814
815int
816ofproto_set_ipfix(struct ofproto *ofproto,
817 const struct ofproto_ipfix_bridge_exporter_options *bo,
818 const struct ofproto_ipfix_flow_exporter_options *fo,
819 size_t n_fo)
820{
821 if (ofproto->ofproto_class->set_ipfix) {
822 return ofproto->ofproto_class->set_ipfix(ofproto, bo, fo, n_fo);
823 } else {
824 return (bo || fo) ? EOPNOTSUPP : 0;
825 }
826}
40358701
GS
827
828void
829ofproto_set_flow_restore_wait(bool flow_restore_wait_db)
830{
831 flow_restore_wait = flow_restore_wait_db;
832}
833
834bool
835ofproto_get_flow_restore_wait(void)
836{
837 return flow_restore_wait;
838}
839
e7934396 840\f
21f7563c
JP
841/* Spanning Tree Protocol (STP) configuration. */
842
843/* Configures STP on 'ofproto' using the settings defined in 's'. If
844 * 's' is NULL, disables STP.
845 *
846 * Returns 0 if successful, otherwise a positive errno value. */
847int
848ofproto_set_stp(struct ofproto *ofproto,
849 const struct ofproto_stp_settings *s)
850{
851 return (ofproto->ofproto_class->set_stp
852 ? ofproto->ofproto_class->set_stp(ofproto, s)
853 : EOPNOTSUPP);
854}
855
856/* Retrieves STP status of 'ofproto' and stores it in 's'. If the
857 * 'enabled' member of 's' is false, then the other members are not
858 * meaningful.
859 *
860 * Returns 0 if successful, otherwise a positive errno value. */
861int
862ofproto_get_stp_status(struct ofproto *ofproto,
863 struct ofproto_stp_status *s)
864{
865 return (ofproto->ofproto_class->get_stp_status
866 ? ofproto->ofproto_class->get_stp_status(ofproto, s)
867 : EOPNOTSUPP);
868}
869
870/* Configures STP on 'ofp_port' of 'ofproto' using the settings defined
871 * in 's'. The caller is responsible for assigning STP port numbers
872 * (using the 'port_num' member in the range of 1 through 255, inclusive)
873 * and ensuring there are no duplicates. If the 's' is NULL, then STP
874 * is disabled on the port.
875 *
876 * Returns 0 if successful, otherwise a positive errno value.*/
877int
4e022ec0 878ofproto_port_set_stp(struct ofproto *ofproto, ofp_port_t ofp_port,
21f7563c
JP
879 const struct ofproto_port_stp_settings *s)
880{
881 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
882 if (!ofport) {
883 VLOG_WARN("%s: cannot configure STP on nonexistent port %"PRIu16,
884 ofproto->name, ofp_port);
885 return ENODEV;
886 }
887
888 return (ofproto->ofproto_class->set_stp_port
889 ? ofproto->ofproto_class->set_stp_port(ofport, s)
890 : EOPNOTSUPP);
891}
892
893/* Retrieves STP port status of 'ofp_port' on 'ofproto' and stores it in
894 * 's'. If the 'enabled' member in 's' is false, then the other members
895 * are not meaningful.
896 *
897 * Returns 0 if successful, otherwise a positive errno value.*/
898int
4e022ec0 899ofproto_port_get_stp_status(struct ofproto *ofproto, ofp_port_t ofp_port,
21f7563c
JP
900 struct ofproto_port_stp_status *s)
901{
902 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
903 if (!ofport) {
b0a5c43b
JP
904 VLOG_WARN_RL(&rl, "%s: cannot get STP status on nonexistent "
905 "port %"PRIu16, ofproto->name, ofp_port);
21f7563c
JP
906 return ENODEV;
907 }
908
909 return (ofproto->ofproto_class->get_stp_port_status
910 ? ofproto->ofproto_class->get_stp_port_status(ofport, s)
911 : EOPNOTSUPP);
912}
fd28ce3a
JS
913
914/* Retrieves STP port statistics of 'ofp_port' on 'ofproto' and stores it in
915 * 's'. If the 'enabled' member in 's' is false, then the other members
916 * are not meaningful.
917 *
918 * Returns 0 if successful, otherwise a positive errno value.*/
919int
920ofproto_port_get_stp_stats(struct ofproto *ofproto, ofp_port_t ofp_port,
921 struct ofproto_port_stp_stats *s)
922{
923 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
924 if (!ofport) {
925 VLOG_WARN_RL(&rl, "%s: cannot get STP stats on nonexistent "
926 "port %"PRIu16, ofproto->name, ofp_port);
927 return ENODEV;
928 }
929
930 return (ofproto->ofproto_class->get_stp_port_stats
931 ? ofproto->ofproto_class->get_stp_port_stats(ofport, s)
932 : EOPNOTSUPP);
933}
9efd308e
DV
934
935/* Rapid Spanning Tree Protocol (RSTP) configuration. */
936
937/* Configures RSTP on 'ofproto' using the settings defined in 's'. If
938 * 's' is NULL, disables RSTP.
939 *
940 * Returns 0 if successful, otherwise a positive errno value. */
941int
942ofproto_set_rstp(struct ofproto *ofproto,
943 const struct ofproto_rstp_settings *s)
944{
945 if (!ofproto->ofproto_class->set_rstp) {
946 return EOPNOTSUPP;
947 }
948 ofproto->ofproto_class->set_rstp(ofproto, s);
949 return 0;
950}
951
952/* Retrieves RSTP status of 'ofproto' and stores it in 's'. If the
953 * 'enabled' member of 's' is false, then the other members are not
954 * meaningful.
955 *
956 * Returns 0 if successful, otherwise a positive errno value. */
957int
958ofproto_get_rstp_status(struct ofproto *ofproto,
959 struct ofproto_rstp_status *s)
960{
961 if (!ofproto->ofproto_class->get_rstp_status) {
962 return EOPNOTSUPP;
963 }
964 ofproto->ofproto_class->get_rstp_status(ofproto, s);
965 return 0;
966}
967
968/* Configures RSTP on 'ofp_port' of 'ofproto' using the settings defined
969 * in 's'. The caller is responsible for assigning RSTP port numbers
970 * (using the 'port_num' member in the range of 1 through 255, inclusive)
971 * and ensuring there are no duplicates. If the 's' is NULL, then RSTP
972 * is disabled on the port.
973 *
974 * Returns 0 if successful, otherwise a positive errno value.*/
975int
976ofproto_port_set_rstp(struct ofproto *ofproto, ofp_port_t ofp_port,
977 const struct ofproto_port_rstp_settings *s)
978{
979 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
980 if (!ofport) {
981 VLOG_WARN("%s: cannot configure RSTP on nonexistent port %"PRIu16,
982 ofproto->name, ofp_port);
983 return ENODEV;
984 }
985
986 if (!ofproto->ofproto_class->set_rstp_port) {
987 return EOPNOTSUPP;
988 }
989 ofproto->ofproto_class->set_rstp_port(ofport, s);
990 return 0;
991}
992
993/* Retrieves RSTP port status of 'ofp_port' on 'ofproto' and stores it in
994 * 's'. If the 'enabled' member in 's' is false, then the other members
995 * are not meaningful.
996 *
997 * Returns 0 if successful, otherwise a positive errno value.*/
998int
999ofproto_port_get_rstp_status(struct ofproto *ofproto, ofp_port_t ofp_port,
1000 struct ofproto_port_rstp_status *s)
1001{
1002 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1003 if (!ofport) {
1004 VLOG_WARN_RL(&rl, "%s: cannot get RSTP status on nonexistent "
1005 "port %"PRIu16, ofproto->name, ofp_port);
1006 return ENODEV;
1007 }
1008
1009 if (!ofproto->ofproto_class->get_rstp_port_status) {
1010 return EOPNOTSUPP;
1011 }
1012 ofproto->ofproto_class->get_rstp_port_status(ofport, s);
1013 return 0;
1014}
21f7563c 1015\f
8b36f51e
EJ
1016/* Queue DSCP configuration. */
1017
1018/* Registers meta-data associated with the 'n_qdscp' Qualities of Service
1019 * 'queues' attached to 'ofport'. This data is not intended to be sufficient
1020 * to implement QoS. Instead, it is used to implement features which require
1021 * knowledge of what queues exist on a port, and some basic information about
1022 * them.
1023 *
1024 * Returns 0 if successful, otherwise a positive errno value. */
1025int
4e022ec0 1026ofproto_port_set_queues(struct ofproto *ofproto, ofp_port_t ofp_port,
8b36f51e
EJ
1027 const struct ofproto_port_queue *queues,
1028 size_t n_queues)
1029{
1030 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1031
1032 if (!ofport) {
1033 VLOG_WARN("%s: cannot set queues on nonexistent port %"PRIu16,
1034 ofproto->name, ofp_port);
1035 return ENODEV;
1036 }
1037
1038 return (ofproto->ofproto_class->set_queues
1039 ? ofproto->ofproto_class->set_queues(ofport, queues, n_queues)
1040 : EOPNOTSUPP);
1041}
1042\f
0477baa9
DF
1043/* LLDP configuration. */
1044void
1045ofproto_port_set_lldp(struct ofproto *ofproto,
1046 ofp_port_t ofp_port,
1047 const struct smap *cfg)
1048{
1049 struct ofport *ofport;
1050 int error;
1051
1052 ofport = ofproto_get_port(ofproto, ofp_port);
1053 if (!ofport) {
1054 VLOG_WARN("%s: cannot configure LLDP on nonexistent port %"PRIu16,
1055 ofproto->name, ofp_port);
1056 return;
1057 }
1058 error = (ofproto->ofproto_class->set_lldp
1059 ? ofproto->ofproto_class->set_lldp(ofport, cfg)
1060 : EOPNOTSUPP);
1061 if (error) {
1062 VLOG_WARN("%s: lldp configuration on port %"PRIu16" (%s) failed (%s)",
1063 ofproto->name, ofp_port, netdev_get_name(ofport->netdev),
1064 ovs_strerror(error));
1065 }
1066}
1067
1068int
1069ofproto_set_aa(struct ofproto *ofproto, void *aux OVS_UNUSED,
1070 const struct aa_settings *s)
1071{
1072 if (!ofproto->ofproto_class->set_aa) {
1073 return EOPNOTSUPP;
1074 }
1075 ofproto->ofproto_class->set_aa(ofproto, s);
1076 return 0;
1077}
1078
1079int
1080ofproto_aa_mapping_register(struct ofproto *ofproto, void *aux,
1081 const struct aa_mapping_settings *s)
1082{
1083 if (!ofproto->ofproto_class->aa_mapping_set) {
1084 return EOPNOTSUPP;
1085 }
1086 ofproto->ofproto_class->aa_mapping_set(ofproto, aux, s);
1087 return 0;
1088}
1089
1090int
1091ofproto_aa_mapping_unregister(struct ofproto *ofproto, void *aux)
1092{
1093 if (!ofproto->ofproto_class->aa_mapping_unset) {
1094 return EOPNOTSUPP;
1095 }
1096 ofproto->ofproto_class->aa_mapping_unset(ofproto, aux);
1097 return 0;
1098}
1099
1100int
1101ofproto_aa_vlan_get_queued(struct ofproto *ofproto,
1102 struct ovs_list *list)
1103{
1104 if (!ofproto->ofproto_class->aa_vlan_get_queued) {
1105 return EOPNOTSUPP;
1106 }
1107 ofproto->ofproto_class->aa_vlan_get_queued(ofproto, list);
1108 return 0;
1109}
1110
1111unsigned int
1112ofproto_aa_vlan_get_queue_size(struct ofproto *ofproto)
1113{
1114 if (!ofproto->ofproto_class->aa_vlan_get_queue_size) {
1115 return EOPNOTSUPP;
1116 }
1117 return ofproto->ofproto_class->aa_vlan_get_queue_size(ofproto);
1118}
1119
e7934396
BP
1120/* Connectivity Fault Management configuration. */
1121
892815f5 1122/* Clears the CFM configuration from 'ofp_port' on 'ofproto'. */
e7934396 1123void
4e022ec0 1124ofproto_port_clear_cfm(struct ofproto *ofproto, ofp_port_t ofp_port)
e7934396 1125{
abe529af
BP
1126 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1127 if (ofport && ofproto->ofproto_class->set_cfm) {
a5610457 1128 ofproto->ofproto_class->set_cfm(ofport, NULL);
e7934396
BP
1129 }
1130}
72b06300 1131
892815f5 1132/* Configures connectivity fault management on 'ofp_port' in 'ofproto'. Takes
93b8df38
EJ
1133 * basic configuration from the configuration members in 'cfm', and the remote
1134 * maintenance point ID from remote_mpid. Ignores the statistics members of
1135 * 'cfm'.
e7934396 1136 *
892815f5 1137 * This function has no effect if 'ofproto' does not have a port 'ofp_port'. */
e7934396 1138void
4e022ec0 1139ofproto_port_set_cfm(struct ofproto *ofproto, ofp_port_t ofp_port,
a5610457 1140 const struct cfm_settings *s)
e7934396
BP
1141{
1142 struct ofport *ofport;
abe529af 1143 int error;
e7934396 1144
abe529af 1145 ofport = ofproto_get_port(ofproto, ofp_port);
e7934396 1146 if (!ofport) {
892815f5
BP
1147 VLOG_WARN("%s: cannot configure CFM on nonexistent port %"PRIu16,
1148 ofproto->name, ofp_port);
e7934396
BP
1149 return;
1150 }
1151
93b8df38
EJ
1152 /* XXX: For configuration simplicity, we only support one remote_mpid
1153 * outside of the CFM module. It's not clear if this is the correct long
1154 * term solution or not. */
abe529af 1155 error = (ofproto->ofproto_class->set_cfm
a5610457 1156 ? ofproto->ofproto_class->set_cfm(ofport, s)
abe529af
BP
1157 : EOPNOTSUPP);
1158 if (error) {
1159 VLOG_WARN("%s: CFM configuration on port %"PRIu16" (%s) failed (%s)",
1160 ofproto->name, ofp_port, netdev_get_name(ofport->netdev),
10a89ef0 1161 ovs_strerror(error));
e7934396 1162 }
e7934396 1163}
e7934396 1164
ccc09689
EJ
1165/* Configures BFD on 'ofp_port' in 'ofproto'. This function has no effect if
1166 * 'ofproto' does not have a port 'ofp_port'. */
1167void
4e022ec0 1168ofproto_port_set_bfd(struct ofproto *ofproto, ofp_port_t ofp_port,
ccc09689
EJ
1169 const struct smap *cfg)
1170{
1171 struct ofport *ofport;
1172 int error;
1173
1174 ofport = ofproto_get_port(ofproto, ofp_port);
1175 if (!ofport) {
1176 VLOG_WARN("%s: cannot configure bfd on nonexistent port %"PRIu16,
1177 ofproto->name, ofp_port);
e8999bdc 1178 return;
ccc09689
EJ
1179 }
1180
1181 error = (ofproto->ofproto_class->set_bfd
1182 ? ofproto->ofproto_class->set_bfd(ofport, cfg)
1183 : EOPNOTSUPP);
1184 if (error) {
1185 VLOG_WARN("%s: bfd configuration on port %"PRIu16" (%s) failed (%s)",
1186 ofproto->name, ofp_port, netdev_get_name(ofport->netdev),
10a89ef0 1187 ovs_strerror(error));
ccc09689
EJ
1188 }
1189}
1190
8f5514fe
AW
1191/* Checks the status change of BFD on 'ofport'.
1192 *
1193 * Returns true if 'ofproto_class' does not support 'bfd_status_changed'. */
1194bool
1195ofproto_port_bfd_status_changed(struct ofproto *ofproto, ofp_port_t ofp_port)
1196{
1197 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1198 return (ofport && ofproto->ofproto_class->bfd_status_changed
1199 ? ofproto->ofproto_class->bfd_status_changed(ofport)
1200 : true);
1201}
1202
88bf179a 1203/* Populates 'status' with the status of BFD on 'ofport'. Returns 0 on
8f5514fe
AW
1204 * success. Returns a positive errno otherwise. Has no effect if 'ofp_port'
1205 * is not an OpenFlow port in 'ofproto'.
88bf179a
AW
1206 *
1207 * The caller must provide and own '*status'. */
ccc09689 1208int
4e022ec0 1209ofproto_port_get_bfd_status(struct ofproto *ofproto, ofp_port_t ofp_port,
ccc09689
EJ
1210 struct smap *status)
1211{
1212 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1213 return (ofport && ofproto->ofproto_class->get_bfd_status
1214 ? ofproto->ofproto_class->get_bfd_status(ofport, status)
1215 : EOPNOTSUPP);
1216}
1217
fa066f01
BP
1218/* Checks the status of LACP negotiation for 'ofp_port' within ofproto.
1219 * Returns 1 if LACP partner information for 'ofp_port' is up-to-date,
1220 * 0 if LACP partner information is not current (generally indicating a
1221 * connectivity problem), or -1 if LACP is not enabled on 'ofp_port'. */
1222int
4e022ec0 1223ofproto_port_is_lacp_current(struct ofproto *ofproto, ofp_port_t ofp_port)
fa066f01 1224{
abe529af
BP
1225 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1226 return (ofport && ofproto->ofproto_class->port_is_lacp_current
1227 ? ofproto->ofproto_class->port_is_lacp_current(ofport)
fa066f01 1228 : -1);
e7934396 1229}
50b9699f
NM
1230
1231int
1232ofproto_port_get_lacp_stats(const struct ofport *port, struct lacp_slave_stats *stats)
1233{
1234 struct ofproto *ofproto = port->ofproto;
1235 int error;
1236
1237 if (ofproto->ofproto_class->port_get_lacp_stats) {
1238 error = ofproto->ofproto_class->port_get_lacp_stats(port, stats);
1239 } else {
1240 error = EOPNOTSUPP;
1241 }
1242
1243 return error;
1244}
e7934396 1245\f
fa066f01 1246/* Bundles. */
e7934396 1247
abe529af
BP
1248/* Registers a "bundle" associated with client data pointer 'aux' in 'ofproto'.
1249 * A bundle is the same concept as a Port in OVSDB, that is, it consists of one
1250 * or more "slave" devices (Interfaces, in OVSDB) along with a VLAN
1251 * configuration plus, if there is more than one slave, a bonding
1252 * configuration.
1253 *
1254 * If 'aux' is already registered then this function updates its configuration
1255 * to 's'. Otherwise, this function registers a new bundle.
1256 *
1257 * Bundles only affect the NXAST_AUTOPATH action and output to the OFPP_NORMAL
1258 * port. */
1259int
1260ofproto_bundle_register(struct ofproto *ofproto, void *aux,
1261 const struct ofproto_bundle_settings *s)
fa066f01 1262{
abe529af
BP
1263 return (ofproto->ofproto_class->bundle_set
1264 ? ofproto->ofproto_class->bundle_set(ofproto, aux, s)
1265 : EOPNOTSUPP);
fa066f01
BP
1266}
1267
abe529af
BP
1268/* Unregisters the bundle registered on 'ofproto' with auxiliary data 'aux'.
1269 * If no such bundle has been registered, this has no effect. */
1270int
1271ofproto_bundle_unregister(struct ofproto *ofproto, void *aux)
e7934396 1272{
abe529af 1273 return ofproto_bundle_register(ofproto, aux, NULL);
e7934396 1274}
fa066f01 1275
e7934396 1276\f
abe529af
BP
1277/* Registers a mirror associated with client data pointer 'aux' in 'ofproto'.
1278 * If 'aux' is already registered then this function updates its configuration
c06bba01 1279 * to 's'. Otherwise, this function registers a new mirror. */
abe529af
BP
1280int
1281ofproto_mirror_register(struct ofproto *ofproto, void *aux,
1282 const struct ofproto_mirror_settings *s)
064af421 1283{
abe529af
BP
1284 return (ofproto->ofproto_class->mirror_set
1285 ? ofproto->ofproto_class->mirror_set(ofproto, aux, s)
1286 : EOPNOTSUPP);
064af421
BP
1287}
1288
abe529af
BP
1289/* Unregisters the mirror registered on 'ofproto' with auxiliary data 'aux'.
1290 * If no mirror has been registered, this has no effect. */
1291int
1292ofproto_mirror_unregister(struct ofproto *ofproto, void *aux)
064af421 1293{
abe529af 1294 return ofproto_mirror_register(ofproto, aux, NULL);
064af421
BP
1295}
1296
9d24de3b
JP
1297/* Retrieves statistics from mirror associated with client data pointer
1298 * 'aux' in 'ofproto'. Stores packet and byte counts in 'packets' and
1299 * 'bytes', respectively. If a particular counters is not supported,
0477baa9
DF
1300 * the appropriate argument is set to UINT64_MAX.
1301 */
9d24de3b
JP
1302int
1303ofproto_mirror_get_stats(struct ofproto *ofproto, void *aux,
1304 uint64_t *packets, uint64_t *bytes)
1305{
1306 if (!ofproto->ofproto_class->mirror_get_stats) {
1307 *packets = *bytes = UINT64_MAX;
1308 return EOPNOTSUPP;
1309 }
1310
1311 return ofproto->ofproto_class->mirror_get_stats(ofproto, aux,
1312 packets, bytes);
1313}
1314
abe529af
BP
1315/* Configures the VLANs whose bits are set to 1 in 'flood_vlans' as VLANs on
1316 * which all packets are flooded, instead of using MAC learning. If
1317 * 'flood_vlans' is NULL, then MAC learning applies to all VLANs.
1318 *
1319 * Flood VLANs affect only the treatment of packets output to the OFPP_NORMAL
1320 * port. */
1321int
1322ofproto_set_flood_vlans(struct ofproto *ofproto, unsigned long *flood_vlans)
abdfe474 1323{
abe529af
BP
1324 return (ofproto->ofproto_class->set_flood_vlans
1325 ? ofproto->ofproto_class->set_flood_vlans(ofproto, flood_vlans)
1326 : EOPNOTSUPP);
abdfe474
JP
1327}
1328
abe529af
BP
1329/* Returns true if 'aux' is a registered bundle that is currently in use as the
1330 * output for a mirror. */
1331bool
b4affc74 1332ofproto_is_mirror_output_bundle(const struct ofproto *ofproto, void *aux)
abe529af
BP
1333{
1334 return (ofproto->ofproto_class->is_mirror_output_bundle
1335 ? ofproto->ofproto_class->is_mirror_output_bundle(ofproto, aux)
1336 : false);
1337}
1338\f
254750ce
BP
1339/* Configuration of OpenFlow tables. */
1340
1341/* Returns the number of OpenFlow tables in 'ofproto'. */
1342int
1343ofproto_get_n_tables(const struct ofproto *ofproto)
1344{
1345 return ofproto->n_tables;
1346}
1347
adcf00ba
AZ
1348/* Returns the number of Controller visible OpenFlow tables
1349 * in 'ofproto'. This number will exclude Hidden tables.
1350 * This funtion's return value should be less or equal to that of
1351 * ofproto_get_n_tables() . */
1352uint8_t
1353ofproto_get_n_visible_tables(const struct ofproto *ofproto)
1354{
1355 uint8_t n = ofproto->n_tables;
1356
1357 /* Count only non-hidden tables in the number of tables. (Hidden tables,
1358 * if present, are always at the end.) */
1359 while(n && (ofproto->tables[n - 1].flags & OFTABLE_HIDDEN)) {
1360 n--;
1361 }
1362
1363 return n;
1364}
1365
254750ce
BP
1366/* Configures the OpenFlow table in 'ofproto' with id 'table_id' with the
1367 * settings from 's'. 'table_id' must be in the range 0 through the number of
1368 * OpenFlow tables in 'ofproto' minus 1, inclusive.
1369 *
1370 * For read-only tables, only the name may be configured. */
1371void
1372ofproto_configure_table(struct ofproto *ofproto, int table_id,
1373 const struct ofproto_table_settings *s)
1374{
1375 struct oftable *table;
1376
cb22974d 1377 ovs_assert(table_id >= 0 && table_id < ofproto->n_tables);
254750ce
BP
1378 table = &ofproto->tables[table_id];
1379
1380 oftable_set_name(table, s->name);
1381
1382 if (table->flags & OFTABLE_READONLY) {
1383 return;
1384 }
1385
1386 if (s->groups) {
1387 oftable_enable_eviction(table, s->groups, s->n_groups);
1388 } else {
1389 oftable_disable_eviction(table);
1390 }
1391
1392 table->max_flows = s->max_flows;
afae68b1 1393
f358a2cb
JR
1394 if (classifier_set_prefix_fields(&table->cls,
1395 s->prefix_fields, s->n_prefix_fields)) {
1396 /* XXX: Trigger revalidation. */
1397 }
834fe5cb
BP
1398
1399 ovs_mutex_lock(&ofproto_mutex);
1400 evict_rules_from_table(table, 0);
1401 ovs_mutex_unlock(&ofproto_mutex);
254750ce
BP
1402}
1403\f
81e2083f
BP
1404bool
1405ofproto_has_snoops(const struct ofproto *ofproto)
1406{
1407 return connmgr_has_snoops(ofproto->connmgr);
1408}
1409
064af421 1410void
81e2083f 1411ofproto_get_snoops(const struct ofproto *ofproto, struct sset *snoops)
064af421 1412{
19a87e36 1413 connmgr_get_snoops(ofproto->connmgr, snoops);
064af421
BP
1414}
1415
a73fcd71 1416/* Deletes 'rule' from 'ofproto'.
8037acb4 1417 *
b74cb5d8
BP
1418 * Within an ofproto implementation, this function allows an ofproto
1419 * implementation to destroy any rules that remain when its ->destruct()
1420 * function is called. This function is not suitable for use elsewhere in an
1421 * ofproto implementation.
1422 *
b74cb5d8 1423 * This function implements steps 4.4 and 4.5 in the section titled "Rule Life
8b81d1ef 1424 * Cycle" in ofproto-provider.h. */
b74cb5d8 1425void
8b81d1ef 1426ofproto_rule_delete(struct ofproto *ofproto, struct rule *rule)
15aaf599 1427 OVS_EXCLUDED(ofproto_mutex)
7ee20df1 1428{
834fe5cb
BP
1429 /* This skips the ofmonitor and flow-removed notifications because the
1430 * switch is being deleted and any OpenFlow channels have been or soon will
1431 * be killed. */
15aaf599 1432 ovs_mutex_lock(&ofproto_mutex);
802f84ff 1433 oftable_remove_rule(rule);
8037acb4 1434 ofproto->ofproto_class->rule_delete(rule);
15aaf599 1435 ovs_mutex_unlock(&ofproto_mutex);
8037acb4
BP
1436}
1437
1438static void
1439ofproto_flush__(struct ofproto *ofproto)
15aaf599 1440 OVS_EXCLUDED(ofproto_mutex)
8037acb4 1441{
d0918789 1442 struct oftable *table;
7ee20df1 1443
3948503a 1444 /* This will flush all datapath flows. */
7ee20df1
BP
1445 if (ofproto->ofproto_class->flush) {
1446 ofproto->ofproto_class->flush(ofproto);
1447 }
1448
3948503a
JR
1449 /* XXX: There is a small race window here, where new datapath flows can be
1450 * created by upcall handlers based on the existing flow table. We can not
1451 * call ofproto class flush while holding 'ofproto_mutex' to prevent this,
1452 * as then we could deadlock on syncing with the handler threads waiting on
1453 * the same mutex. */
1454
15aaf599 1455 ovs_mutex_lock(&ofproto_mutex);
b772ded8 1456 OFPROTO_FOR_EACH_TABLE (table, ofproto) {
802f84ff 1457 struct rule_collection rules;
78c8df12 1458 struct rule *rule;
7ee20df1 1459
5c67e4af
BP
1460 if (table->flags & OFTABLE_HIDDEN) {
1461 continue;
1462 }
1463
802f84ff
JR
1464 rule_collection_init(&rules);
1465
de4ad4a2 1466 CLS_FOR_EACH (rule, cr, &table->cls) {
802f84ff 1467 rule_collection_add(&rules, rule);
7ee20df1 1468 }
802f84ff
JR
1469 delete_flows__(&rules, OFPRR_DELETE, NULL);
1470 rule_collection_destroy(&rules);
7ee20df1 1471 }
3948503a
JR
1472 /* XXX: Concurrent handler threads may insert new learned flows based on
1473 * learn actions of the now deleted flows right after we release
1474 * 'ofproto_mutex'. */
15aaf599 1475 ovs_mutex_unlock(&ofproto_mutex);
7ee20df1
BP
1476}
1477
7395c052
NZ
1478static void delete_group(struct ofproto *ofproto, uint32_t group_id);
1479
abe529af
BP
1480static void
1481ofproto_destroy__(struct ofproto *ofproto)
15aaf599 1482 OVS_EXCLUDED(ofproto_mutex)
abe529af 1483{
d0918789 1484 struct oftable *table;
6c1491fb 1485
35412852 1486 destroy_rule_executes(ofproto);
7395c052 1487 delete_group(ofproto, OFPG_ALL);
5c09b672
GS
1488
1489 guarded_list_destroy(&ofproto->rule_executes);
7395c052
NZ
1490 ovs_rwlock_destroy(&ofproto->groups_rwlock);
1491 hmap_destroy(&ofproto->groups);
1492
abe529af
BP
1493 hmap_remove(&all_ofprotos, &ofproto->hmap_node);
1494 free(ofproto->name);
955a7127 1495 free(ofproto->type);
abe529af
BP
1496 free(ofproto->mfr_desc);
1497 free(ofproto->hw_desc);
1498 free(ofproto->sw_desc);
1499 free(ofproto->serial_desc);
1500 free(ofproto->dp_desc);
abe529af 1501 hmap_destroy(&ofproto->ports);
fdcea803 1502 hmap_destroy(&ofproto->ofport_usage);
abe529af 1503 shash_destroy(&ofproto->port_by_name);
e1b1d06a 1504 simap_destroy(&ofproto->ofp_requests);
6c1491fb 1505
b772ded8 1506 OFPROTO_FOR_EACH_TABLE (table, ofproto) {
d0918789 1507 oftable_destroy(table);
6c1491fb
BP
1508 }
1509 free(ofproto->tables);
fa066f01 1510
1406c79b
BP
1511 ovs_assert(hindex_is_empty(&ofproto->cookies));
1512 hindex_destroy(&ofproto->cookies);
1513
35f48b8b
BP
1514 ovs_assert(hmap_is_empty(&ofproto->learned_cookies));
1515 hmap_destroy(&ofproto->learned_cookies);
1516
52a90c29
BP
1517 free(ofproto->vlan_bitmap);
1518
abe529af
BP
1519 ofproto->ofproto_class->dealloc(ofproto);
1520}
fa066f01 1521
064af421
BP
1522void
1523ofproto_destroy(struct ofproto *p)
15aaf599 1524 OVS_EXCLUDED(ofproto_mutex)
064af421 1525{
ca0f572c 1526 struct ofport *ofport, *next_ofport;
fdcea803 1527 struct ofport_usage *usage, *next_usage;
064af421
BP
1528
1529 if (!p) {
1530 return;
1531 }
1532
717de9ff
JR
1533 if (p->meters) {
1534 meter_delete(p, 1, p->meter_features.max_meters);
1535 p->meter_features.max_meters = 0;
1536 free(p->meters);
1537 p->meters = NULL;
1538 }
1539
7ee20df1 1540 ofproto_flush__(p);
4e8e4213 1541 HMAP_FOR_EACH_SAFE (ofport, next_ofport, hmap_node, &p->ports) {
abe529af 1542 ofport_destroy(ofport);
064af421 1543 }
064af421 1544
fdcea803
GS
1545 HMAP_FOR_EACH_SAFE (usage, next_usage, hmap_node, &p->ofport_usage) {
1546 hmap_remove(&p->ofport_usage, &usage->hmap_node);
1547 free(usage);
1548 }
1549
abe529af 1550 p->ofproto_class->destruct(p);
58f19539
DDP
1551
1552 /* We should not postpone this because it involves deleting a listening
1553 * socket which we may want to reopen soon. 'connmgr' should not be used
1554 * by other threads */
1555 connmgr_destroy(p->connmgr);
1556
f416c8d6
JR
1557 /* Destroying rules is deferred, must have 'ofproto' around for them. */
1558 ovsrcu_postpone(ofproto_destroy__, p);
064af421
BP
1559}
1560
abe529af
BP
1561/* Destroys the datapath with the respective 'name' and 'type'. With the Linux
1562 * kernel datapath, for example, this destroys the datapath in the kernel, and
1563 * with the netdev-based datapath, it tears down the data structures that
1564 * represent the datapath.
1565 *
1566 * The datapath should not be currently open as an ofproto. */
064af421 1567int
abe529af 1568ofproto_delete(const char *name, const char *type)
064af421 1569{
abe529af
BP
1570 const struct ofproto_class *class = ofproto_class_find__(type);
1571 return (!class ? EAFNOSUPPORT
1572 : !class->del ? EACCES
1573 : class->del(type, name));
064af421
BP
1574}
1575
e9e28be3
BP
1576static void
1577process_port_change(struct ofproto *ofproto, int error, char *devname)
1578{
1579 if (error == ENOBUFS) {
1580 reinit_ports(ofproto);
1581 } else if (!error) {
1582 update_port(ofproto, devname);
1583 free(devname);
1584 }
1585}
1586
11a574a7
JP
1587int
1588ofproto_type_run(const char *datapath_type)
1589{
1590 const struct ofproto_class *class;
1591 int error;
1592
1593 datapath_type = ofproto_normalize_type(datapath_type);
1594 class = ofproto_class_find__(datapath_type);
1595
1596 error = class->type_run ? class->type_run(datapath_type) : 0;
1597 if (error && error != EAGAIN) {
1598 VLOG_ERR_RL(&rl, "%s: type_run failed (%s)",
10a89ef0 1599 datapath_type, ovs_strerror(error));
11a574a7
JP
1600 }
1601 return error;
1602}
1603
11a574a7
JP
1604void
1605ofproto_type_wait(const char *datapath_type)
1606{
1607 const struct ofproto_class *class;
1608
1609 datapath_type = ofproto_normalize_type(datapath_type);
1610 class = ofproto_class_find__(datapath_type);
1611
1612 if (class->type_wait) {
1613 class->type_wait(datapath_type);
1614 }
1615}
1616
064af421 1617int
abe529af 1618ofproto_run(struct ofproto *p)
064af421 1619{
064af421 1620 int error;
da4a6191 1621 uint64_t new_seq;
064af421 1622
abe529af 1623 error = p->ofproto_class->run(p);
5fcc0d00 1624 if (error && error != EAGAIN) {
10a89ef0 1625 VLOG_ERR_RL(&rl, "%s: run failed (%s)", p->name, ovs_strerror(error));
149f577a
JG
1626 }
1627
35412852
BP
1628 run_rule_executes(p);
1629
448c2fa8
EJ
1630 /* Restore the eviction group heap invariant occasionally. */
1631 if (p->eviction_group_timer < time_msec()) {
1632 size_t i;
1633
1634 p->eviction_group_timer = time_msec() + 1000;
1635
1636 for (i = 0; i < p->n_tables; i++) {
1637 struct oftable *table = &p->tables[i];
1638 struct eviction_group *evg;
448c2fa8
EJ
1639 struct rule *rule;
1640
1641 if (!table->eviction_fields) {
1642 continue;
1643 }
1644
1a9bb326
EJ
1645 if (classifier_count(&table->cls) > 100000) {
1646 static struct vlog_rate_limit count_rl =
1647 VLOG_RATE_LIMIT_INIT(1, 1);
1648 VLOG_WARN_RL(&count_rl, "Table %"PRIuSIZE" has an excessive"
1649 " number of rules: %d", i,
1650 classifier_count(&table->cls));
1651 }
1652
15aaf599 1653 ovs_mutex_lock(&ofproto_mutex);
5f0476ce 1654 CLS_FOR_EACH (rule, cr, &table->cls) {
6d56c1f1
K
1655 if (rule->idle_timeout || rule->hard_timeout) {
1656 if (!rule->eviction_group) {
1657 eviction_group_add_rule(rule);
1658 } else {
1659 heap_raw_change(&rule->evg_node,
1660 rule_eviction_priority(p, rule));
1661 }
448c2fa8
EJ
1662 }
1663 }
6d56c1f1
K
1664
1665 HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) {
1666 heap_rebuild(&evg->rules);
1667 }
15aaf599 1668 ovs_mutex_unlock(&ofproto_mutex);
448c2fa8
EJ
1669 }
1670 }
1671
5bf0e941 1672 if (p->ofproto_class->port_poll) {
7436ed80
BP
1673 char *devname;
1674
5bf0e941
BP
1675 while ((error = p->ofproto_class->port_poll(p, &devname)) != EAGAIN) {
1676 process_port_change(p, error, devname);
064af421 1677 }
e9e28be3 1678 }
031d8bff 1679
da4a6191
JS
1680 new_seq = seq_read(connectivity_seq_get());
1681 if (new_seq != p->change_seq) {
1682 struct sset devnames;
1683 const char *devname;
1684 struct ofport *ofport;
1685
1686 /* Update OpenFlow port status for any port whose netdev has changed.
1687 *
1688 * Refreshing a given 'ofport' can cause an arbitrary ofport to be
1689 * destroyed, so it's not safe to update ports directly from the
1690 * HMAP_FOR_EACH loop, or even to use HMAP_FOR_EACH_SAFE. Instead, we
1691 * need this two-phase approach. */
1692 sset_init(&devnames);
1693 HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
61501798
AW
1694 uint64_t port_change_seq;
1695
1696 port_change_seq = netdev_get_change_seq(ofport->netdev);
1697 if (ofport->change_seq != port_change_seq) {
1698 ofport->change_seq = port_change_seq;
1699 sset_add(&devnames, netdev_get_name(ofport->netdev));
1700 }
031d8bff 1701 }
da4a6191
JS
1702 SSET_FOR_EACH (devname, &devnames) {
1703 update_port(p, devname);
1704 }
1705 sset_destroy(&devnames);
1706
1707 p->change_seq = new_seq;
064af421
BP
1708 }
1709
834fe5cb 1710 connmgr_run(p->connmgr, handle_openflow);
064af421 1711
5fcc0d00
BP
1712 return error;
1713}
1714
064af421
BP
1715void
1716ofproto_wait(struct ofproto *p)
1717{
abe529af 1718 p->ofproto_class->wait(p);
5bf0e941
BP
1719 if (p->ofproto_class->port_poll_wait) {
1720 p->ofproto_class->port_poll_wait(p);
e7934396 1721 }
da4a6191 1722 seq_wait(connectivity_seq_get(), p->change_seq);
834fe5cb 1723 connmgr_wait(p->connmgr);
064af421
BP
1724}
1725
064af421
BP
1726bool
1727ofproto_is_alive(const struct ofproto *p)
1728{
19a87e36 1729 return connmgr_has_controllers(p->connmgr);
064af421
BP
1730}
1731
0d085684
BP
1732/* Adds some memory usage statistics for 'ofproto' into 'usage', for use with
1733 * memory_report(). */
1734void
1735ofproto_get_memory_usage(const struct ofproto *ofproto, struct simap *usage)
1736{
1737 const struct oftable *table;
1738 unsigned int n_rules;
1739
1740 simap_increase(usage, "ports", hmap_count(&ofproto->ports));
15aaf599 1741
0d085684
BP
1742 n_rules = 0;
1743 OFPROTO_FOR_EACH_TABLE (table, ofproto) {
1744 n_rules += classifier_count(&table->cls);
1745 }
1746 simap_increase(usage, "rules", n_rules);
1747
1748 if (ofproto->ofproto_class->get_memory_usage) {
1749 ofproto->ofproto_class->get_memory_usage(ofproto, usage);
1750 }
1751
1752 connmgr_get_memory_usage(ofproto->connmgr, usage);
1753}
1754
1c030aa5
EJ
1755void
1756ofproto_type_get_memory_usage(const char *datapath_type, struct simap *usage)
1757{
1758 const struct ofproto_class *class;
1759
1760 datapath_type = ofproto_normalize_type(datapath_type);
1761 class = ofproto_class_find__(datapath_type);
1762
1763 if (class && class->type_get_memory_usage) {
1764 class->type_get_memory_usage(datapath_type, usage);
1765 }
1766}
1767
bffc0589 1768void
2cdcb898 1769ofproto_get_ofproto_controller_info(const struct ofproto *ofproto,
bffc0589
AE
1770 struct shash *info)
1771{
19a87e36 1772 connmgr_get_controller_info(ofproto->connmgr, info);
bffc0589
AE
1773}
1774
1775void
1776ofproto_free_ofproto_controller_info(struct shash *info)
1777{
72ba2ed3 1778 connmgr_free_controller_info(info);
bffc0589
AE
1779}
1780
b5827b24
BP
1781/* Makes a deep copy of 'old' into 'port'. */
1782void
1783ofproto_port_clone(struct ofproto_port *port, const struct ofproto_port *old)
1784{
1785 port->name = xstrdup(old->name);
1786 port->type = xstrdup(old->type);
1787 port->ofp_port = old->ofp_port;
1788}
1789
1790/* Frees memory allocated to members of 'ofproto_port'.
3a6ccc8c 1791 *
b5827b24
BP
1792 * Do not call this function on an ofproto_port obtained from
1793 * ofproto_port_dump_next(): that function retains ownership of the data in the
1794 * ofproto_port. */
1795void
1796ofproto_port_destroy(struct ofproto_port *ofproto_port)
1797{
1798 free(ofproto_port->name);
1799 free(ofproto_port->type);
1800}
1801
b5827b24 1802/* Initializes 'dump' to begin dumping the ports in an ofproto.
3a6ccc8c 1803 *
b5827b24
BP
1804 * This function provides no status indication. An error status for the entire
1805 * dump operation is provided when it is completed by calling
1806 * ofproto_port_dump_done().
1807 */
1808void
1809ofproto_port_dump_start(struct ofproto_port_dump *dump,
1810 const struct ofproto *ofproto)
1811{
abe529af
BP
1812 dump->ofproto = ofproto;
1813 dump->error = ofproto->ofproto_class->port_dump_start(ofproto,
1814 &dump->state);
b5827b24
BP
1815}
1816
1817/* Attempts to retrieve another port from 'dump', which must have been created
1818 * with ofproto_port_dump_start(). On success, stores a new ofproto_port into
1819 * 'port' and returns true. On failure, returns false.
1820 *
1821 * Failure might indicate an actual error or merely that the last port has been
1822 * dumped. An error status for the entire dump operation is provided when it
1823 * is completed by calling ofproto_port_dump_done().
1824 *
1825 * The ofproto owns the data stored in 'port'. It will remain valid until at
1826 * least the next time 'dump' is passed to ofproto_port_dump_next() or
1827 * ofproto_port_dump_done(). */
1828bool
1829ofproto_port_dump_next(struct ofproto_port_dump *dump,
1830 struct ofproto_port *port)
1831{
abe529af
BP
1832 const struct ofproto *ofproto = dump->ofproto;
1833
1834 if (dump->error) {
1835 return false;
1836 }
b5827b24 1837
abe529af
BP
1838 dump->error = ofproto->ofproto_class->port_dump_next(ofproto, dump->state,
1839 port);
1840 if (dump->error) {
1841 ofproto->ofproto_class->port_dump_done(ofproto, dump->state);
1842 return false;
b5827b24 1843 }
abe529af 1844 return true;
b5827b24
BP
1845}
1846
1847/* Completes port table dump operation 'dump', which must have been created
1848 * with ofproto_port_dump_start(). Returns 0 if the dump operation was
1849 * error-free, otherwise a positive errno value describing the problem. */
3a6ccc8c 1850int
b5827b24 1851ofproto_port_dump_done(struct ofproto_port_dump *dump)
3a6ccc8c 1852{
abe529af
BP
1853 const struct ofproto *ofproto = dump->ofproto;
1854 if (!dump->error) {
1855 dump->error = ofproto->ofproto_class->port_dump_done(ofproto,
1856 dump->state);
1857 }
1858 return dump->error == EOF ? 0 : dump->error;
b5827b24
BP
1859}
1860
0aeaabc8
JP
1861/* Returns the type to pass to netdev_open() when a datapath of type
1862 * 'datapath_type' has a port of type 'port_type', for a few special
1863 * cases when a netdev type differs from a port type. For example, when
1864 * using the userspace datapath, a port of type "internal" needs to be
1865 * opened as "tap".
1866 *
1867 * Returns either 'type' itself or a string literal, which must not be
1868 * freed. */
1869const char *
1870ofproto_port_open_type(const char *datapath_type, const char *port_type)
1871{
1872 const struct ofproto_class *class;
1873
1874 datapath_type = ofproto_normalize_type(datapath_type);
1875 class = ofproto_class_find__(datapath_type);
1876 if (!class) {
1877 return port_type;
1878 }
1879
1880 return (class->port_open_type
1881 ? class->port_open_type(datapath_type, port_type)
1882 : port_type);
1883}
1884
81816a5f
JP
1885/* Attempts to add 'netdev' as a port on 'ofproto'. If 'ofp_portp' is
1886 * non-null and '*ofp_portp' is not OFPP_NONE, attempts to use that as
1887 * the port's OpenFlow port number.
1888 *
1889 * If successful, returns 0 and sets '*ofp_portp' to the new port's
1890 * OpenFlow port number (if 'ofp_portp' is non-null). On failure,
1891 * returns a positive errno value and sets '*ofp_portp' to OFPP_NONE (if
1892 * 'ofp_portp' is non-null). */
b5827b24
BP
1893int
1894ofproto_port_add(struct ofproto *ofproto, struct netdev *netdev,
4e022ec0 1895 ofp_port_t *ofp_portp)
b5827b24 1896{
4e022ec0 1897 ofp_port_t ofp_port = ofp_portp ? *ofp_portp : OFPP_NONE;
3a6ccc8c
BP
1898 int error;
1899
e1b1d06a 1900 error = ofproto->ofproto_class->port_add(ofproto, netdev);
1fa24dea 1901 if (!error) {
e1b1d06a
JP
1902 const char *netdev_name = netdev_get_name(netdev);
1903
4e022ec0
AW
1904 simap_put(&ofproto->ofp_requests, netdev_name,
1905 ofp_to_u16(ofp_port));
e1b1d06a 1906 update_port(ofproto, netdev_name);
1fa24dea 1907 }
b5827b24 1908 if (ofp_portp) {
17f69db5
BP
1909 *ofp_portp = OFPP_NONE;
1910 if (!error) {
1911 struct ofproto_port ofproto_port;
1912
1913 error = ofproto_port_query_by_name(ofproto,
1914 netdev_get_name(netdev),
1915 &ofproto_port);
1916 if (!error) {
1917 *ofp_portp = ofproto_port.ofp_port;
1918 ofproto_port_destroy(&ofproto_port);
1919 }
1920 }
3a6ccc8c
BP
1921 }
1922 return error;
1923}
1924
b5827b24
BP
1925/* Looks up a port named 'devname' in 'ofproto'. On success, returns 0 and
1926 * initializes '*port' appropriately; on failure, returns a positive errno
1927 * value.
1928 *
abe529af 1929 * The caller owns the data in 'ofproto_port' and must free it with
b5827b24
BP
1930 * ofproto_port_destroy() when it is no longer needed. */
1931int
1932ofproto_port_query_by_name(const struct ofproto *ofproto, const char *devname,
1933 struct ofproto_port *port)
a4e2e1f2 1934{
b5827b24
BP
1935 int error;
1936
abe529af
BP
1937 error = ofproto->ofproto_class->port_query_by_name(ofproto, devname, port);
1938 if (error) {
1939 memset(port, 0, sizeof *port);
b5827b24
BP
1940 }
1941 return error;
a4e2e1f2
EJ
1942}
1943
b5827b24 1944/* Deletes port number 'ofp_port' from the datapath for 'ofproto'.
3a6ccc8c 1945 * Returns 0 if successful, otherwise a positive errno. */
064af421 1946int
4e022ec0 1947ofproto_port_del(struct ofproto *ofproto, ofp_port_t ofp_port)
064af421 1948{
abe529af 1949 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
1264ec95 1950 const char *name = ofport ? netdev_get_name(ofport->netdev) : "<unknown>";
e1b1d06a 1951 struct simap_node *ofp_request_node;
3cf10406 1952 int error;
cdee00fd 1953
e1b1d06a
JP
1954 ofp_request_node = simap_find(&ofproto->ofp_requests, name);
1955 if (ofp_request_node) {
1956 simap_delete(&ofproto->ofp_requests, ofp_request_node);
1957 }
1958
abe529af 1959 error = ofproto->ofproto_class->port_del(ofproto, ofp_port);
892815f5 1960 if (!error && ofport) {
1264ec95
BP
1961 /* 'name' is the netdev's name and update_port() is going to close the
1962 * netdev. Just in case update_port() refers to 'name' after it
3a6ccc8c
BP
1963 * destroys 'ofport', make a copy of it around the update_port()
1964 * call. */
1965 char *devname = xstrdup(name);
1966 update_port(ofproto, devname);
1967 free(devname);
3cf10406
BP
1968 }
1969 return error;
064af421
BP
1970}
1971
276f6518
SH
1972static void
1973flow_mod_init(struct ofputil_flow_mod *fm,
eb391b76 1974 const struct match *match, int priority,
276f6518
SH
1975 const struct ofpact *ofpacts, size_t ofpacts_len,
1976 enum ofp_flow_mod_command command)
1977{
1978 memset(fm, 0, sizeof *fm);
1979 fm->match = *match;
1980 fm->priority = priority;
1981 fm->cookie = 0;
1982 fm->new_cookie = 0;
1983 fm->modify_cookie = false;
1984 fm->table_id = 0;
1985 fm->command = command;
1986 fm->idle_timeout = 0;
1987 fm->hard_timeout = 0;
ca26eb44 1988 fm->importance = 0;
276f6518
SH
1989 fm->buffer_id = UINT32_MAX;
1990 fm->out_port = OFPP_ANY;
1991 fm->out_group = OFPG_ANY;
1992 fm->flags = 0;
1993 fm->ofpacts = CONST_CAST(struct ofpact *, ofpacts);
1994 fm->ofpacts_len = ofpacts_len;
cc40d06b 1995 fm->delete_reason = OFPRR_DELETE;
276f6518
SH
1996}
1997
97f63e57
BP
1998static int
1999simple_flow_mod(struct ofproto *ofproto,
eb391b76 2000 const struct match *match, int priority,
97f63e57
BP
2001 const struct ofpact *ofpacts, size_t ofpacts_len,
2002 enum ofp_flow_mod_command command)
2003{
2004 struct ofputil_flow_mod fm;
2005
276f6518 2006 flow_mod_init(&fm, match, priority, ofpacts, ofpacts_len, command);
15aaf599 2007
baae3d02 2008 return handle_flow_mod__(ofproto, &fm, NULL);
97f63e57
BP
2009}
2010
6c1491fb 2011/* Adds a flow to OpenFlow flow table 0 in 'p' that matches 'cls_rule' and
fa8b054f
BP
2012 * performs the 'n_actions' actions in 'actions'. The new flow will not
2013 * timeout.
2014 *
2015 * If cls_rule->priority is in the range of priorities supported by OpenFlow
2016 * (0...65535, inclusive) then the flow will be visible to OpenFlow
2017 * controllers; otherwise, it will be hidden.
2018 *
f25d0cf3 2019 * The caller retains ownership of 'cls_rule' and 'ofpacts'.
6c1491fb
BP
2020 *
2021 * This is a helper function for in-band control and fail-open. */
064af421 2022void
81a76618 2023ofproto_add_flow(struct ofproto *ofproto, const struct match *match,
eb391b76 2024 int priority,
f25d0cf3 2025 const struct ofpact *ofpacts, size_t ofpacts_len)
15aaf599 2026 OVS_EXCLUDED(ofproto_mutex)
064af421 2027{
7ee20df1 2028 const struct rule *rule;
6f00e29b 2029 bool must_add;
7ee20df1 2030
97f63e57
BP
2031 /* First do a cheap check whether the rule we're looking for already exists
2032 * with the actions that we want. If it does, then we're done. */
81a76618
BP
2033 rule = rule_from_cls_rule(classifier_find_match_exactly(
2034 &ofproto->tables[0].cls, match, priority));
6f00e29b 2035 if (rule) {
dc723c44 2036 const struct rule_actions *actions = rule_get_actions(rule);
06a0f3e2 2037 must_add = !ofpacts_equal(actions->ofpacts, actions->ofpacts_len,
6f00e29b 2038 ofpacts, ofpacts_len);
6f00e29b
BP
2039 } else {
2040 must_add = true;
2041 }
97f63e57
BP
2042
2043 /* If there's no such rule or the rule doesn't have the actions we want,
2044 * fall back to a executing a full flow mod. We can't optimize this at
2045 * all because we didn't take enough locks above to ensure that the flow
2046 * table didn't already change beneath us. */
6f00e29b 2047 if (must_add) {
97f63e57
BP
2048 simple_flow_mod(ofproto, match, priority, ofpacts, ofpacts_len,
2049 OFPFC_MODIFY_STRICT);
7ee20df1 2050 }
064af421
BP
2051}
2052
75a75043 2053/* Executes the flow modification specified in 'fm'. Returns 0 on success, an
90bf1e07
BP
2054 * OFPERR_* OpenFlow error code on failure, or OFPROTO_POSTPONE if the
2055 * operation cannot be initiated now but may be retried later.
75a75043 2056 *
1b63b91e
BP
2057 * This is a helper function for in-band control and fail-open and the "learn"
2058 * action. */
75a75043 2059int
e3b56933 2060ofproto_flow_mod(struct ofproto *ofproto, struct ofputil_flow_mod *fm)
15aaf599 2061 OVS_EXCLUDED(ofproto_mutex)
75a75043 2062{
b90d6ee5
JR
2063 /* Optimize for the most common case of a repeated learn action.
2064 * If an identical flow already exists we only need to update its
2065 * 'modified' time. */
2066 if (fm->command == OFPFC_MODIFY_STRICT && fm->table_id != OFPTT_ALL
2067 && !(fm->flags & OFPUTIL_FF_RESET_COUNTS)) {
2068 struct oftable *table = &ofproto->tables[fm->table_id];
b90d6ee5
JR
2069 struct rule *rule;
2070 bool done = false;
2071
0ef165ec
EJ
2072 rule = rule_from_cls_rule(classifier_find_match_exactly(&table->cls,
2073 &fm->match,
2074 fm->priority));
b90d6ee5
JR
2075 if (rule) {
2076 /* Reading many of the rule fields and writing on 'modified'
2077 * requires the rule->mutex. Also, rule->actions may change
2078 * if rule->mutex is not held. */
06a0f3e2
BP
2079 const struct rule_actions *actions;
2080
b90d6ee5 2081 ovs_mutex_lock(&rule->mutex);
06a0f3e2 2082 actions = rule_get_actions(rule);
b90d6ee5
JR
2083 if (rule->idle_timeout == fm->idle_timeout
2084 && rule->hard_timeout == fm->hard_timeout
ca26eb44 2085 && rule->importance == fm->importance
b90d6ee5
JR
2086 && rule->flags == (fm->flags & OFPUTIL_FF_STATE)
2087 && (!fm->modify_cookie || (fm->new_cookie == rule->flow_cookie))
2088 && ofpacts_equal(fm->ofpacts, fm->ofpacts_len,
06a0f3e2 2089 actions->ofpacts, actions->ofpacts_len)) {
b90d6ee5
JR
2090 /* Rule already exists and need not change, only update the
2091 modified timestamp. */
2092 rule->modified = time_msec();
2093 done = true;
2094 }
2095 ovs_mutex_unlock(&rule->mutex);
2096 }
b90d6ee5
JR
2097
2098 if (done) {
2099 return 0;
2100 }
2101 }
2102
baae3d02 2103 return handle_flow_mod__(ofproto, fm, NULL);
75a75043
BP
2104}
2105
6c1491fb
BP
2106/* Searches for a rule with matching criteria exactly equal to 'target' in
2107 * ofproto's table 0 and, if it finds one, deletes it.
2108 *
2109 * This is a helper function for in-band control and fail-open. */
b20f4073 2110void
81a76618 2111ofproto_delete_flow(struct ofproto *ofproto,
eb391b76 2112 const struct match *target, int priority)
15aaf599 2113 OVS_EXCLUDED(ofproto_mutex)
064af421 2114{
8037acb4 2115 struct classifier *cls = &ofproto->tables[0].cls;
064af421
BP
2116 struct rule *rule;
2117
97f63e57
BP
2118 /* First do a cheap check whether the rule we're looking for has already
2119 * been deleted. If so, then we're done. */
8037acb4
BP
2120 rule = rule_from_cls_rule(classifier_find_match_exactly(cls, target,
2121 priority));
834fe5cb
BP
2122 if (!rule) {
2123 return;
bcf84111 2124 }
834fe5cb
BP
2125
2126 /* Execute a flow mod. We can't optimize this at all because we didn't
2127 * take enough locks above to ensure that the flow table didn't already
2128 * change beneath us. */
2129 simple_flow_mod(ofproto, target, priority, NULL, 0, OFPFC_DELETE_STRICT);
142e1f5c
BP
2130}
2131
834fe5cb
BP
2132/* Delete all of the flows from all of ofproto's flow tables, then reintroduce
2133 * the flows required by in-band control and fail-open. */
142e1f5c
BP
2134void
2135ofproto_flush_flows(struct ofproto *ofproto)
2136{
7ee20df1 2137 COVERAGE_INC(ofproto_flush);
834fe5cb
BP
2138 ofproto_flush__(ofproto);
2139 connmgr_flushed(ofproto->connmgr);
064af421
BP
2140}
2141\f
2142static void
2143reinit_ports(struct ofproto *p)
2144{
abe529af 2145 struct ofproto_port_dump dump;
b3c01ed3 2146 struct sset devnames;
064af421 2147 struct ofport *ofport;
abe529af 2148 struct ofproto_port ofproto_port;
b3c01ed3 2149 const char *devname;
064af421 2150
898bf89d
JP
2151 COVERAGE_INC(ofproto_reinit_ports);
2152
b3c01ed3 2153 sset_init(&devnames);
4e8e4213 2154 HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
1264ec95 2155 sset_add(&devnames, netdev_get_name(ofport->netdev));
064af421 2156 }
abe529af
BP
2157 OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) {
2158 sset_add(&devnames, ofproto_port.name);
064af421 2159 }
064af421 2160
b3c01ed3
BP
2161 SSET_FOR_EACH (devname, &devnames) {
2162 update_port(p, devname);
064af421 2163 }
b3c01ed3 2164 sset_destroy(&devnames);
064af421
BP
2165}
2166
4e022ec0 2167static ofp_port_t
e1b1d06a
JP
2168alloc_ofp_port(struct ofproto *ofproto, const char *netdev_name)
2169{
4e022ec0 2170 uint16_t port_idx;
e1b1d06a 2171
4e022ec0 2172 port_idx = simap_get(&ofproto->ofp_requests, netdev_name);
430dbb14 2173 port_idx = port_idx ? port_idx : UINT16_MAX;
4e022ec0 2174
430dbb14 2175 if (port_idx >= ofproto->max_ports
fdcea803
GS
2176 || ofport_get_usage(ofproto, u16_to_ofp(port_idx)) == LLONG_MAX) {
2177 uint16_t lru_ofport = 0, end_port_no = ofproto->alloc_port_no;
2178 long long int last_used_at, lru = LLONG_MAX;
e1b1d06a 2179
e1b1d06a
JP
2180 /* Search for a free OpenFlow port number. We try not to
2181 * immediately reuse them to prevent problems due to old
484c8355
BP
2182 * flows.
2183 *
2184 * We limit the automatically assigned port numbers to the lower half
2185 * of the port range, to reserve the upper half for assignment by
2186 * controllers. */
6033d9d9 2187 for (;;) {
484c8355 2188 if (++ofproto->alloc_port_no >= MIN(ofproto->max_ports, 32768)) {
fdcea803 2189 ofproto->alloc_port_no = 1;
6033d9d9 2190 }
fdcea803
GS
2191 last_used_at = ofport_get_usage(ofproto,
2192 u16_to_ofp(ofproto->alloc_port_no));
2193 if (!last_used_at) {
430dbb14 2194 port_idx = ofproto->alloc_port_no;
6033d9d9 2195 break;
865b26a4
GS
2196 } else if ( last_used_at < time_msec() - 60*60*1000) {
2197 /* If the port with ofport 'ofproto->alloc_port_no' was deleted
2198 * more than an hour ago, consider it usable. */
2199 ofport_remove_usage(ofproto,
2200 u16_to_ofp(ofproto->alloc_port_no));
2201 port_idx = ofproto->alloc_port_no;
2202 break;
fdcea803
GS
2203 } else if (last_used_at < lru) {
2204 lru = last_used_at;
2205 lru_ofport = ofproto->alloc_port_no;
e1b1d06a 2206 }
fdcea803 2207
430dbb14 2208 if (ofproto->alloc_port_no == end_port_no) {
fdcea803
GS
2209 if (lru_ofport) {
2210 port_idx = lru_ofport;
2211 break;
2212 }
6033d9d9 2213 return OFPP_NONE;
e1b1d06a
JP
2214 }
2215 }
2216 }
fdcea803 2217 ofport_set_usage(ofproto, u16_to_ofp(port_idx), LLONG_MAX);
4e022ec0 2218 return u16_to_ofp(port_idx);
e1b1d06a
JP
2219}
2220
2221static void
fdcea803 2222dealloc_ofp_port(struct ofproto *ofproto, ofp_port_t ofp_port)
e1b1d06a 2223{
430dbb14 2224 if (ofp_to_u16(ofp_port) < ofproto->max_ports) {
fdcea803 2225 ofport_set_usage(ofproto, ofp_port, time_msec());
40fa9417 2226 }
e1b1d06a
JP
2227}
2228
fbfa2911
BP
2229/* Opens and returns a netdev for 'ofproto_port' in 'ofproto', or a null
2230 * pointer if the netdev cannot be opened. On success, also fills in
d7d92203 2231 * '*pp'. */
b33951b8 2232static struct netdev *
e1b1d06a
JP
2233ofport_open(struct ofproto *ofproto,
2234 struct ofproto_port *ofproto_port,
9e1fd49b 2235 struct ofputil_phy_port *pp)
064af421
BP
2236{
2237 enum netdev_flags flags;
064af421 2238 struct netdev *netdev;
064af421
BP
2239 int error;
2240
18812dff 2241 error = netdev_open(ofproto_port->name, ofproto_port->type, &netdev);
064af421 2242 if (error) {
fbfa2911 2243 VLOG_WARN_RL(&rl, "%s: ignoring port %s (%"PRIu16") because netdev %s "
064af421 2244 "cannot be opened (%s)",
fbfa2911 2245 ofproto->name,
abe529af 2246 ofproto_port->name, ofproto_port->ofp_port,
10a89ef0 2247 ofproto_port->name, ovs_strerror(error));
064af421
BP
2248 return NULL;
2249 }
2250
e1b1d06a
JP
2251 if (ofproto_port->ofp_port == OFPP_NONE) {
2252 if (!strcmp(ofproto->name, ofproto_port->name)) {
2253 ofproto_port->ofp_port = OFPP_LOCAL;
2254 } else {
2255 ofproto_port->ofp_port = alloc_ofp_port(ofproto,
2256 ofproto_port->name);
2257 }
2258 }
9e1fd49b
BP
2259 pp->port_no = ofproto_port->ofp_port;
2260 netdev_get_etheraddr(netdev, pp->hw_addr);
2261 ovs_strlcpy(pp->name, ofproto_port->name, sizeof pp->name);
064af421 2262 netdev_get_flags(netdev, &flags);
9e1fd49b
BP
2263 pp->config = flags & NETDEV_UP ? 0 : OFPUTIL_PC_PORT_DOWN;
2264 pp->state = netdev_get_carrier(netdev) ? 0 : OFPUTIL_PS_LINK_DOWN;
2265 netdev_get_features(netdev, &pp->curr, &pp->advertised,
2266 &pp->supported, &pp->peer);
cd65125d
BP
2267 pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000;
2268 pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000;
118c4676 2269
b33951b8 2270 return netdev;
064af421
BP
2271}
2272
b33951b8 2273/* Returns true if most fields of 'a' and 'b' are equal. Differences in name,
d7d92203 2274 * port number, and 'config' bits other than OFPUTIL_PC_PORT_DOWN are
b33951b8
BP
2275 * disregarded. */
2276static bool
9e1fd49b
BP
2277ofport_equal(const struct ofputil_phy_port *a,
2278 const struct ofputil_phy_port *b)
064af421 2279{
9e1fd49b 2280 return (eth_addr_equals(a->hw_addr, b->hw_addr)
064af421 2281 && a->state == b->state
9e1fd49b 2282 && !((a->config ^ b->config) & OFPUTIL_PC_PORT_DOWN)
064af421
BP
2283 && a->curr == b->curr
2284 && a->advertised == b->advertised
2285 && a->supported == b->supported
9e1fd49b
BP
2286 && a->peer == b->peer
2287 && a->curr_speed == b->curr_speed
2288 && a->max_speed == b->max_speed);
064af421
BP
2289}
2290
b33951b8
BP
2291/* Adds an ofport to 'p' initialized based on the given 'netdev' and 'opp'.
2292 * The caller must ensure that 'p' does not have a conflicting ofport (that is,
2293 * one with the same name or port number). */
064af421 2294static void
b33951b8 2295ofport_install(struct ofproto *p,
9e1fd49b 2296 struct netdev *netdev, const struct ofputil_phy_port *pp)
064af421 2297{
b33951b8
BP
2298 const char *netdev_name = netdev_get_name(netdev);
2299 struct ofport *ofport;
abe529af 2300 int error;
72b06300 2301
b33951b8 2302 /* Create ofport. */
abe529af
BP
2303 ofport = p->ofproto_class->port_alloc();
2304 if (!ofport) {
2305 error = ENOMEM;
2306 goto error;
2307 }
0f7d71a5 2308 ofport->ofproto = p;
b33951b8 2309 ofport->netdev = netdev;
61501798 2310 ofport->change_seq = netdev_get_change_seq(netdev);
9e1fd49b
BP
2311 ofport->pp = *pp;
2312 ofport->ofp_port = pp->port_no;
65e0be10 2313 ofport->created = time_msec();
b33951b8
BP
2314
2315 /* Add port to 'p'. */
4e022ec0 2316 hmap_insert(&p->ports, &ofport->hmap_node,
f9c0c3ec 2317 hash_ofp_port(ofport->ofp_port));
72b06300 2318 shash_add(&p->port_by_name, netdev_name, ofport);
abe529af 2319
ada3428f 2320 update_mtu(p, ofport);
9197df76 2321
abe529af
BP
2322 /* Let the ofproto_class initialize its private data. */
2323 error = p->ofproto_class->port_construct(ofport);
2324 if (error) {
2325 goto error;
2326 }
2a6f78e0 2327 connmgr_send_port_status(p->connmgr, NULL, pp, OFPPR_ADD);
abe529af
BP
2328 return;
2329
2330error:
2331 VLOG_WARN_RL(&rl, "%s: could not add port %s (%s)",
10a89ef0 2332 p->name, netdev_name, ovs_strerror(error));
abe529af
BP
2333 if (ofport) {
2334 ofport_destroy__(ofport);
2335 } else {
2336 netdev_close(netdev);
72b06300 2337 }
064af421
BP
2338}
2339
b33951b8 2340/* Removes 'ofport' from 'p' and destroys it. */
064af421 2341static void
0f7d71a5 2342ofport_remove(struct ofport *ofport)
064af421 2343{
2a6f78e0 2344 connmgr_send_port_status(ofport->ofproto->connmgr, NULL, &ofport->pp,
fa066f01 2345 OFPPR_DELETE);
abe529af 2346 ofport_destroy(ofport);
b33951b8
BP
2347}
2348
2349/* If 'ofproto' contains an ofport named 'name', removes it from 'ofproto' and
2350 * destroys it. */
2351static void
2352ofport_remove_with_name(struct ofproto *ofproto, const char *name)
2353{
2354 struct ofport *port = shash_find_data(&ofproto->port_by_name, name);
2355 if (port) {
0f7d71a5 2356 ofport_remove(port);
b33951b8
BP
2357 }
2358}
2359
9e1fd49b 2360/* Updates 'port' with new 'pp' description.
b33951b8
BP
2361 *
2362 * Does not handle a name or port number change. The caller must implement
2363 * such a change as a delete followed by an add. */
2364static void
9e1fd49b 2365ofport_modified(struct ofport *port, struct ofputil_phy_port *pp)
b33951b8 2366{
9e1fd49b
BP
2367 memcpy(port->pp.hw_addr, pp->hw_addr, ETH_ADDR_LEN);
2368 port->pp.config = ((port->pp.config & ~OFPUTIL_PC_PORT_DOWN)
2369 | (pp->config & OFPUTIL_PC_PORT_DOWN));
53fd5c7c
BP
2370 port->pp.state = ((port->pp.state & ~OFPUTIL_PS_LINK_DOWN)
2371 | (pp->state & OFPUTIL_PS_LINK_DOWN));
9e1fd49b
BP
2372 port->pp.curr = pp->curr;
2373 port->pp.advertised = pp->advertised;
2374 port->pp.supported = pp->supported;
2375 port->pp.peer = pp->peer;
2376 port->pp.curr_speed = pp->curr_speed;
2377 port->pp.max_speed = pp->max_speed;
b33951b8 2378
2a6f78e0
BP
2379 connmgr_send_port_status(port->ofproto->connmgr, NULL,
2380 &port->pp, OFPPR_MODIFY);
064af421
BP
2381}
2382
5a2dfd47
JP
2383/* Update OpenFlow 'state' in 'port' and notify controller. */
2384void
9e1fd49b 2385ofproto_port_set_state(struct ofport *port, enum ofputil_port_state state)
5a2dfd47 2386{
9e1fd49b
BP
2387 if (port->pp.state != state) {
2388 port->pp.state = state;
2a6f78e0
BP
2389 connmgr_send_port_status(port->ofproto->connmgr, NULL,
2390 &port->pp, OFPPR_MODIFY);
5a2dfd47
JP
2391 }
2392}
2393
abe529af 2394void
4e022ec0 2395ofproto_port_unregister(struct ofproto *ofproto, ofp_port_t ofp_port)
e7934396 2396{
abe529af
BP
2397 struct ofport *port = ofproto_get_port(ofproto, ofp_port);
2398 if (port) {
52a90c29
BP
2399 if (port->ofproto->ofproto_class->set_realdev) {
2400 port->ofproto->ofproto_class->set_realdev(port, 0, 0);
2401 }
b308140a
JP
2402 if (port->ofproto->ofproto_class->set_stp_port) {
2403 port->ofproto->ofproto_class->set_stp_port(port, NULL);
2404 }
9efd308e
DV
2405 if (port->ofproto->ofproto_class->set_rstp_port) {
2406 port->ofproto->ofproto_class->set_rstp_port(port, NULL);
2407 }
abe529af 2408 if (port->ofproto->ofproto_class->set_cfm) {
a5610457 2409 port->ofproto->ofproto_class->set_cfm(port, NULL);
abe529af
BP
2410 }
2411 if (port->ofproto->ofproto_class->bundle_remove) {
2412 port->ofproto->ofproto_class->bundle_remove(port);
e7934396
BP
2413 }
2414 }
2415}
2416
2417static void
abe529af 2418ofport_destroy__(struct ofport *port)
e7934396 2419{
abe529af
BP
2420 struct ofproto *ofproto = port->ofproto;
2421 const char *name = netdev_get_name(port->netdev);
fa066f01 2422
abe529af
BP
2423 hmap_remove(&ofproto->ports, &port->hmap_node);
2424 shash_delete(&ofproto->port_by_name,
2425 shash_find(&ofproto->port_by_name, name));
fa066f01 2426
abe529af
BP
2427 netdev_close(port->netdev);
2428 ofproto->ofproto_class->port_dealloc(port);
e7934396
BP
2429}
2430
064af421 2431static void
abe529af 2432ofport_destroy(struct ofport *port)
064af421 2433{
fa066f01 2434 if (port) {
e1b1d06a 2435 dealloc_ofp_port(port->ofproto, port->ofp_port);
abe529af
BP
2436 port->ofproto->ofproto_class->port_destruct(port);
2437 ofport_destroy__(port);
2438 }
064af421
BP
2439}
2440
abe529af 2441struct ofport *
4e022ec0 2442ofproto_get_port(const struct ofproto *ofproto, ofp_port_t ofp_port)
ca0f572c
BP
2443{
2444 struct ofport *port;
2445
f9c0c3ec 2446 HMAP_FOR_EACH_IN_BUCKET (port, hmap_node, hash_ofp_port(ofp_port),
4e022ec0 2447 &ofproto->ports) {
abe529af 2448 if (port->ofp_port == ofp_port) {
ca0f572c
BP
2449 return port;
2450 }
2451 }
2452 return NULL;
2453}
2454
fdcea803
GS
2455static long long int
2456ofport_get_usage(const struct ofproto *ofproto, ofp_port_t ofp_port)
2457{
2458 struct ofport_usage *usage;
2459
2460 HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port),
2461 &ofproto->ofport_usage) {
2462 if (usage->ofp_port == ofp_port) {
2463 return usage->last_used;
2464 }
2465 }
2466 return 0;
2467}
2468
2469static void
2470ofport_set_usage(struct ofproto *ofproto, ofp_port_t ofp_port,
2471 long long int last_used)
2472{
2473 struct ofport_usage *usage;
2474 HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port),
2475 &ofproto->ofport_usage) {
2476 if (usage->ofp_port == ofp_port) {
2477 usage->last_used = last_used;
2478 return;
2479 }
2480 }
2481 ovs_assert(last_used == LLONG_MAX);
2482
2483 usage = xmalloc(sizeof *usage);
2484 usage->ofp_port = ofp_port;
2485 usage->last_used = last_used;
2486 hmap_insert(&ofproto->ofport_usage, &usage->hmap_node,
2487 hash_ofp_port(ofp_port));
2488}
2489
865b26a4
GS
2490static void
2491ofport_remove_usage(struct ofproto *ofproto, ofp_port_t ofp_port)
2492{
2493 struct ofport_usage *usage;
2494 HMAP_FOR_EACH_IN_BUCKET (usage, hmap_node, hash_ofp_port(ofp_port),
2495 &ofproto->ofport_usage) {
2496 if (usage->ofp_port == ofp_port) {
2497 hmap_remove(&ofproto->ofport_usage, &usage->hmap_node);
2498 free(usage);
2499 break;
2500 }
2501 }
2502}
2503
6527c598
PS
2504int
2505ofproto_port_get_stats(const struct ofport *port, struct netdev_stats *stats)
2506{
2507 struct ofproto *ofproto = port->ofproto;
2508 int error;
2509
2510 if (ofproto->ofproto_class->port_get_stats) {
2511 error = ofproto->ofproto_class->port_get_stats(port, stats);
2512 } else {
2513 error = EOPNOTSUPP;
2514 }
2515
2516 return error;
2517}
2518
064af421 2519static void
b33951b8 2520update_port(struct ofproto *ofproto, const char *name)
064af421 2521{
abe529af 2522 struct ofproto_port ofproto_port;
9e1fd49b 2523 struct ofputil_phy_port pp;
b33951b8
BP
2524 struct netdev *netdev;
2525 struct ofport *port;
064af421
BP
2526
2527 COVERAGE_INC(ofproto_update_port);
c874dc6d 2528
b33951b8 2529 /* Fetch 'name''s location and properties from the datapath. */
abe529af 2530 netdev = (!ofproto_port_query_by_name(ofproto, name, &ofproto_port)
fbfa2911 2531 ? ofport_open(ofproto, &ofproto_port, &pp)
b33951b8 2532 : NULL);
4e022ec0 2533
b33951b8 2534 if (netdev) {
abe529af 2535 port = ofproto_get_port(ofproto, ofproto_port.ofp_port);
b33951b8 2536 if (port && !strcmp(netdev_get_name(port->netdev), name)) {
e65942a0
BP
2537 struct netdev *old_netdev = port->netdev;
2538
b33951b8 2539 /* 'name' hasn't changed location. Any properties changed? */
9e1fd49b
BP
2540 if (!ofport_equal(&port->pp, &pp)) {
2541 ofport_modified(port, &pp);
abe529af
BP
2542 }
2543
ada3428f 2544 update_mtu(ofproto, port);
9197df76 2545
e65942a0
BP
2546 /* Install the newly opened netdev in case it has changed.
2547 * Don't close the old netdev yet in case port_modified has to
2548 * remove a retained reference to it.*/
abe529af 2549 port->netdev = netdev;
61501798 2550 port->change_seq = netdev_get_change_seq(netdev);
abe529af
BP
2551
2552 if (port->ofproto->ofproto_class->port_modified) {
2553 port->ofproto->ofproto_class->port_modified(port);
b33951b8 2554 }
e65942a0
BP
2555
2556 netdev_close(old_netdev);
b33951b8
BP
2557 } else {
2558 /* If 'port' is nonnull then its name differs from 'name' and thus
2559 * we should delete it. If we think there's a port named 'name'
2560 * then its port number must be wrong now so delete it too. */
2561 if (port) {
0f7d71a5 2562 ofport_remove(port);
b33951b8
BP
2563 }
2564 ofport_remove_with_name(ofproto, name);
9e1fd49b 2565 ofport_install(ofproto, netdev, &pp);
c874dc6d 2566 }
b33951b8
BP
2567 } else {
2568 /* Any port named 'name' is gone now. */
2569 ofport_remove_with_name(ofproto, name);
c874dc6d 2570 }
abe529af 2571 ofproto_port_destroy(&ofproto_port);
064af421
BP
2572}
2573
2574static int
2575init_ports(struct ofproto *p)
2576{
abe529af
BP
2577 struct ofproto_port_dump dump;
2578 struct ofproto_port ofproto_port;
e1b1d06a 2579 struct shash_node *node, *next;
abe529af
BP
2580
2581 OFPROTO_PORT_FOR_EACH (&ofproto_port, &dump, p) {
e1b1d06a
JP
2582 const char *name = ofproto_port.name;
2583
2584 if (shash_find(&p->port_by_name, name)) {
fbfa2911 2585 VLOG_WARN_RL(&rl, "%s: ignoring duplicate device %s in datapath",
e1b1d06a 2586 p->name, name);
abe529af 2587 } else {
9e1fd49b 2588 struct ofputil_phy_port pp;
b33951b8
BP
2589 struct netdev *netdev;
2590
e1b1d06a
JP
2591 /* Check if an OpenFlow port number had been requested. */
2592 node = shash_find(&init_ofp_ports, name);
2593 if (node) {
2594 const struct iface_hint *iface_hint = node->data;
4e022ec0
AW
2595 simap_put(&p->ofp_requests, name,
2596 ofp_to_u16(iface_hint->ofp_port));
e1b1d06a
JP
2597 }
2598
fbfa2911 2599 netdev = ofport_open(p, &ofproto_port, &pp);
b33951b8 2600 if (netdev) {
9e1fd49b 2601 ofport_install(p, netdev, &pp);
430dbb14 2602 if (ofp_to_u16(ofproto_port.ofp_port) < p->max_ports) {
7c35397c 2603 p->alloc_port_no = MAX(p->alloc_port_no,
430dbb14 2604 ofp_to_u16(ofproto_port.ofp_port));
7c35397c 2605 }
064af421
BP
2606 }
2607 }
2608 }
b0ec0f27 2609
e1b1d06a 2610 SHASH_FOR_EACH_SAFE(node, next, &init_ofp_ports) {
4f9e08a5 2611 struct iface_hint *iface_hint = node->data;
e1b1d06a
JP
2612
2613 if (!strcmp(iface_hint->br_name, p->name)) {
2614 free(iface_hint->br_name);
2615 free(iface_hint->br_type);
4f9e08a5 2616 free(iface_hint);
e1b1d06a
JP
2617 shash_delete(&init_ofp_ports, node);
2618 }
2619 }
2620
064af421
BP
2621 return 0;
2622}
9197df76
JP
2623
2624/* Find the minimum MTU of all non-datapath devices attached to 'p'.
2625 * Returns ETH_PAYLOAD_MAX or the minimum of the ports. */
2626static int
2627find_min_mtu(struct ofproto *p)
2628{
2629 struct ofport *ofport;
2630 int mtu = 0;
2631
2632 HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
2633 struct netdev *netdev = ofport->netdev;
2634 int dev_mtu;
2635
2636 /* Skip any internal ports, since that's what we're trying to
2637 * set. */
2638 if (!strcmp(netdev_get_type(netdev), "internal")) {
2639 continue;
2640 }
2641
2642 if (netdev_get_mtu(netdev, &dev_mtu)) {
2643 continue;
2644 }
2645 if (!mtu || dev_mtu < mtu) {
2646 mtu = dev_mtu;
2647 }
2648 }
2649
2650 return mtu ? mtu: ETH_PAYLOAD_MAX;
2651}
2652
ada3428f
PS
2653/* Update MTU of all datapath devices on 'p' to the minimum of the
2654 * non-datapath ports in event of 'port' added or changed. */
9197df76 2655static void
ada3428f 2656update_mtu(struct ofproto *p, struct ofport *port)
9197df76
JP
2657{
2658 struct ofport *ofport;
ada3428f
PS
2659 struct netdev *netdev = port->netdev;
2660 int dev_mtu, old_min;
2661
2662 if (netdev_get_mtu(netdev, &dev_mtu)) {
2663 port->mtu = 0;
2664 return;
2665 }
2666 if (!strcmp(netdev_get_type(port->netdev), "internal")) {
2667 if (dev_mtu > p->min_mtu) {
2668 if (!netdev_set_mtu(port->netdev, p->min_mtu)) {
2669 dev_mtu = p->min_mtu;
2670 }
2671 }
2672 port->mtu = dev_mtu;
2673 return;
2674 }
2675
2676 /* For non-internal port find new min mtu. */
2677 old_min = p->min_mtu;
2678 port->mtu = dev_mtu;
2679 p->min_mtu = find_min_mtu(p);
2680 if (p->min_mtu == old_min) {
2681 return;
2682 }
9197df76
JP
2683
2684 HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
2685 struct netdev *netdev = ofport->netdev;
2686
2687 if (!strcmp(netdev_get_type(netdev), "internal")) {
ada3428f
PS
2688 if (!netdev_set_mtu(netdev, p->min_mtu)) {
2689 ofport->mtu = p->min_mtu;
2690 }
9197df76
JP
2691 }
2692 }
2693}
064af421 2694\f
f416c8d6
JR
2695static void
2696ofproto_rule_destroy__(struct rule *rule)
2697 OVS_NO_THREAD_SAFETY_ANALYSIS
2698{
2699 cls_rule_destroy(CONST_CAST(struct cls_rule *, &rule->cr));
2700 rule_actions_destroy(rule_get_actions(rule));
2701 ovs_mutex_destroy(&rule->mutex);
2702 rule->ofproto->ofproto_class->rule_dealloc(rule);
2703}
2704
d6671377
JR
2705/* Create a new rule based on attributes in 'fm', match in 'cr', and
2706 * 'table_id'. Note that the rule is NOT inserted into a any data structures
2707 * yet. Takes ownership of 'cr'. */
2708static enum ofperr
2709ofproto_rule_create(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
2710 struct cls_rule *cr, uint8_t table_id,
2711 struct rule **rulep)
2712 OVS_REQUIRES(ofproto_mutex)
2713{
2714 struct rule *rule;
2715 enum ofperr error;
2716
2717 /* Allocate new rule. */
2718 rule = ofproto->ofproto_class->rule_alloc();
2719 if (!rule) {
2720 cls_rule_destroy(cr);
2721 VLOG_WARN_RL(&rl, "%s: failed to allocate a rule.", ofproto->name);
2722 return ENOMEM;
2723 }
2724
2725 /* Initialize base state. */
2726 *CONST_CAST(struct ofproto **, &rule->ofproto) = ofproto;
2727 cls_rule_move(CONST_CAST(struct cls_rule *, &rule->cr), cr);
2728 ovs_refcount_init(&rule->ref_count);
2729 rule->flow_cookie = fm->new_cookie;
2730 rule->created = rule->modified = time_msec();
2731
2732 ovs_mutex_init(&rule->mutex);
2733 ovs_mutex_lock(&rule->mutex);
2734 rule->idle_timeout = fm->idle_timeout;
2735 rule->hard_timeout = fm->hard_timeout;
2736 rule->importance = fm->importance;
2737 ovs_mutex_unlock(&rule->mutex);
2738
2739 *CONST_CAST(uint8_t *, &rule->table_id) = table_id;
2740 rule->flags = fm->flags & OFPUTIL_FF_STATE;
2741 ovsrcu_set_hidden(&rule->actions,
2742 rule_actions_create(fm->ofpacts, fm->ofpacts_len));
2743 list_init(&rule->meter_list_node);
2744 rule->eviction_group = NULL;
2745 list_init(&rule->expirable);
2746 rule->monitor_flags = 0;
2747 rule->add_seqno = 0;
2748 rule->modify_seqno = 0;
2749
2750 /* Construct rule, initializing derived state. */
2751 error = ofproto->ofproto_class->rule_construct(rule);
2752 if (error) {
2753 ofproto_rule_destroy__(rule);
2754 return error;
2755 }
2756
2757 *rulep = rule;
2758 return 0;
2759}
2760
f416c8d6
JR
2761static void
2762rule_destroy_cb(struct rule *rule)
2763{
2764 rule->ofproto->ofproto_class->rule_destruct(rule);
2765 ofproto_rule_destroy__(rule);
2766}
2767
a2143702
BP
2768void
2769ofproto_rule_ref(struct rule *rule)
064af421 2770{
1eae3d33 2771 if (rule) {
37bec3d3 2772 ovs_refcount_ref(&rule->ref_count);
a2143702
BP
2773 }
2774}
2775
f5d16e55
JR
2776bool
2777ofproto_rule_try_ref(struct rule *rule)
2778{
2779 if (rule) {
2780 return ovs_refcount_try_ref_rcu(&rule->ref_count);
2781 }
2782 return false;
2783}
2784
f416c8d6
JR
2785/* Decrements 'rule''s ref_count and schedules 'rule' to be destroyed if the
2786 * ref_count reaches 0.
2787 *
2788 * Use of RCU allows short term use (between RCU quiescent periods) without
2789 * keeping a reference. A reference must be taken if the rule needs to
2790 * stay around accross the RCU quiescent periods. */
a2143702
BP
2791void
2792ofproto_rule_unref(struct rule *rule)
2793{
24f83812 2794 if (rule && ovs_refcount_unref_relaxed(&rule->ref_count) == 1) {
f416c8d6 2795 ovsrcu_postpone(rule_destroy_cb, rule);
1eae3d33 2796 }
064af421
BP
2797}
2798
809c7548
RW
2799void
2800ofproto_group_ref(struct ofgroup *group)
2801{
2802 if (group) {
2803 ovs_refcount_ref(&group->ref_count);
2804 }
2805}
2806
2807void
2808ofproto_group_unref(struct ofgroup *group)
2809{
2810 if (group && ovs_refcount_unref(&group->ref_count) == 1) {
2811 group->ofproto->ofproto_class->group_destruct(group);
2812 ofputil_bucket_list_destroy(&group->buckets);
2813 group->ofproto->ofproto_class->group_dealloc(group);
2814 }
2815}
2816
65efd2ab
JR
2817static uint32_t get_provider_meter_id(const struct ofproto *,
2818 uint32_t of_meter_id);
2819
dc723c44
JR
2820/* Creates and returns a new 'struct rule_actions', whose actions are a copy
2821 * of from the 'ofpacts_len' bytes of 'ofpacts'. */
2822const struct rule_actions *
4c7562c5 2823rule_actions_create(const struct ofpact *ofpacts, size_t ofpacts_len)
6f00e29b
BP
2824{
2825 struct rule_actions *actions;
2826
dc723c44 2827 actions = xmalloc(sizeof *actions + ofpacts_len);
6f00e29b 2828 actions->ofpacts_len = ofpacts_len;
4c7562c5 2829 actions->has_meter = ofpacts_get_meter(ofpacts, ofpacts_len) != 0;
dc723c44 2830 memcpy(actions->ofpacts, ofpacts, ofpacts_len);
65efd2ab 2831
35f48b8b
BP
2832 actions->has_learn_with_delete = (next_learn_with_delete(actions, NULL)
2833 != NULL);
2834
6f00e29b
BP
2835 return actions;
2836}
2837
dc723c44 2838/* Free the actions after the RCU quiescent period is reached. */
6f00e29b 2839void
dc723c44 2840rule_actions_destroy(const struct rule_actions *actions)
6f00e29b 2841{
06a0f3e2 2842 if (actions) {
dc723c44 2843 ovsrcu_postpone(free, CONST_CAST(struct rule_actions *, actions));
6f00e29b
BP
2844 }
2845}
2846
bcf84111 2847/* Returns true if 'rule' has an OpenFlow OFPAT_OUTPUT or OFPAT_ENQUEUE action
f25d0cf3 2848 * that outputs to 'port' (output to OFPP_FLOOD and OFPP_ALL doesn't count). */
cdbdeeda 2849bool
4e022ec0 2850ofproto_rule_has_out_port(const struct rule *rule, ofp_port_t port)
15aaf599 2851 OVS_REQUIRES(ofproto_mutex)
064af421 2852{
06a0f3e2
BP
2853 if (port == OFPP_ANY) {
2854 return true;
2855 } else {
2856 const struct rule_actions *actions = rule_get_actions(rule);
2857 return ofpacts_output_to_port(actions->ofpacts,
2858 actions->ofpacts_len, port);
2859 }
064af421
BP
2860}
2861
7395c052 2862/* Returns true if 'rule' has group and equals group_id. */
74e79b7c 2863static bool
7395c052 2864ofproto_rule_has_out_group(const struct rule *rule, uint32_t group_id)
15aaf599 2865 OVS_REQUIRES(ofproto_mutex)
7395c052 2866{
06a0f3e2
BP
2867 if (group_id == OFPG_ANY) {
2868 return true;
2869 } else {
2870 const struct rule_actions *actions = rule_get_actions(rule);
2871 return ofpacts_output_to_group(actions->ofpacts,
2872 actions->ofpacts_len, group_id);
2873 }
7395c052
NZ
2874}
2875
35412852
BP
2876static void
2877rule_execute_destroy(struct rule_execute *e)
eedc0097 2878{
35412852
BP
2879 ofproto_rule_unref(e->rule);
2880 list_remove(&e->list_node);
2881 free(e);
2882}
eedc0097 2883
35412852
BP
2884/* Executes all "rule_execute" operations queued up in ofproto->rule_executes,
2885 * by passing them to the ofproto provider. */
2886static void
2887run_rule_executes(struct ofproto *ofproto)
15aaf599 2888 OVS_EXCLUDED(ofproto_mutex)
35412852
BP
2889{
2890 struct rule_execute *e, *next;
ca6ba700 2891 struct ovs_list executes;
35412852
BP
2892
2893 guarded_list_pop_all(&ofproto->rule_executes, &executes);
2894 LIST_FOR_EACH_SAFE (e, next, list_node, &executes) {
35412852
BP
2895 struct flow flow;
2896
cf62fa4c 2897 flow_extract(e->packet, &flow);
b5e7e61a 2898 flow.in_port.ofp_port = e->in_port;
35412852
BP
2899 ofproto->ofproto_class->rule_execute(e->rule, &flow, e->packet);
2900
2901 rule_execute_destroy(e);
2902 }
2903}
2904
2905/* Destroys and discards all "rule_execute" operations queued up in
2906 * ofproto->rule_executes. */
2907static void
2908destroy_rule_executes(struct ofproto *ofproto)
2909{
2910 struct rule_execute *e, *next;
ca6ba700 2911 struct ovs_list executes;
35412852
BP
2912
2913 guarded_list_pop_all(&ofproto->rule_executes, &executes);
2914 LIST_FOR_EACH_SAFE (e, next, list_node, &executes) {
cf62fa4c 2915 dp_packet_delete(e->packet);
35412852
BP
2916 rule_execute_destroy(e);
2917 }
350a665f
BP
2918}
2919
adcf00ba 2920static bool
834fe5cb 2921rule_is_readonly(const struct rule *rule)
5c67e4af 2922{
834fe5cb
BP
2923 const struct oftable *table = &rule->ofproto->tables[rule->table_id];
2924 return (table->flags & OFTABLE_READONLY) != 0;
5c67e4af 2925}
fa066f01 2926\f
35f48b8b
BP
2927static uint32_t
2928hash_learned_cookie(ovs_be64 cookie_, uint8_t table_id)
2929{
2930 uint64_t cookie = (OVS_FORCE uint64_t) cookie_;
2931 return hash_3words(cookie, cookie >> 32, table_id);
2932}
2933
2934static void
2935learned_cookies_update_one__(struct ofproto *ofproto,
2936 const struct ofpact_learn *learn,
ca6ba700 2937 int delta, struct ovs_list *dead_cookies)
35f48b8b
BP
2938 OVS_REQUIRES(ofproto_mutex)
2939{
2940 uint32_t hash = hash_learned_cookie(learn->cookie, learn->table_id);
2941 struct learned_cookie *c;
2942
2943 HMAP_FOR_EACH_WITH_HASH (c, u.hmap_node, hash, &ofproto->learned_cookies) {
2944 if (c->cookie == learn->cookie && c->table_id == learn->table_id) {
2945 c->n += delta;
2946 ovs_assert(c->n >= 0);
2947
2948 if (!c->n) {
2949 hmap_remove(&ofproto->learned_cookies, &c->u.hmap_node);
2950 list_push_back(dead_cookies, &c->u.list_node);
2951 }
2952
2953 return;
2954 }
2955 }
2956
2957 ovs_assert(delta > 0);
2958 c = xmalloc(sizeof *c);
2959 hmap_insert(&ofproto->learned_cookies, &c->u.hmap_node, hash);
2960 c->cookie = learn->cookie;
2961 c->table_id = learn->table_id;
2962 c->n = delta;
2963}
2964
2965static const struct ofpact_learn *
2966next_learn_with_delete(const struct rule_actions *actions,
2967 const struct ofpact_learn *start)
2968{
2969 const struct ofpact *pos;
2970
2971 for (pos = start ? ofpact_next(&start->ofpact) : actions->ofpacts;
2972 pos < ofpact_end(actions->ofpacts, actions->ofpacts_len);
2973 pos = ofpact_next(pos)) {
2974 if (pos->type == OFPACT_LEARN) {
2975 const struct ofpact_learn *learn = ofpact_get_LEARN(pos);
2976 if (learn->flags & NX_LEARN_F_DELETE_LEARNED) {
2977 return learn;
2978 }
2979 }
2980 }
2981
2982 return NULL;
2983}
2984
2985static void
2986learned_cookies_update__(struct ofproto *ofproto,
2987 const struct rule_actions *actions,
ca6ba700 2988 int delta, struct ovs_list *dead_cookies)
35f48b8b
BP
2989 OVS_REQUIRES(ofproto_mutex)
2990{
2991 if (actions->has_learn_with_delete) {
2992 const struct ofpact_learn *learn;
2993
2994 for (learn = next_learn_with_delete(actions, NULL); learn;
2995 learn = next_learn_with_delete(actions, learn)) {
2996 learned_cookies_update_one__(ofproto, learn, delta, dead_cookies);
2997 }
2998 }
2999}
3000
3001static void
3002learned_cookies_inc(struct ofproto *ofproto,
3003 const struct rule_actions *actions)
3004 OVS_REQUIRES(ofproto_mutex)
3005{
3006 learned_cookies_update__(ofproto, actions, +1, NULL);
3007}
3008
3009static void
3010learned_cookies_dec(struct ofproto *ofproto,
3011 const struct rule_actions *actions,
ca6ba700 3012 struct ovs_list *dead_cookies)
35f48b8b
BP
3013 OVS_REQUIRES(ofproto_mutex)
3014{
3015 learned_cookies_update__(ofproto, actions, -1, dead_cookies);
3016}
3017
3018static void
ca6ba700 3019learned_cookies_flush(struct ofproto *ofproto, struct ovs_list *dead_cookies)
35f48b8b
BP
3020 OVS_REQUIRES(ofproto_mutex)
3021{
5f03c983 3022 struct learned_cookie *c;
35f48b8b 3023
5f03c983 3024 LIST_FOR_EACH_POP (c, u.list_node, dead_cookies) {
35f48b8b
BP
3025 struct rule_criteria criteria;
3026 struct rule_collection rules;
3027 struct match match;
3028
3029 match_init_catchall(&match);
3030 rule_criteria_init(&criteria, c->table_id, &match, 0,
3031 c->cookie, OVS_BE64_MAX, OFPP_ANY, OFPG_ANY);
3032 rule_criteria_require_rw(&criteria, false);
3033 collect_rules_loose(ofproto, &criteria, &rules);
3034 delete_flows__(&rules, OFPRR_DELETE, NULL);
3035 rule_criteria_destroy(&criteria);
3036 rule_collection_destroy(&rules);
3037
35f48b8b
BP
3038 free(c);
3039 }
3040}
3041\f
90bf1e07 3042static enum ofperr
d1e2cf21 3043handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh)
064af421 3044{
b0421aa2 3045 ofconn_send_reply(ofconn, make_echo_reply(oh));
064af421 3046 return 0;
064af421
BP
3047}
3048
3c1bb396
BP
3049static void
3050query_tables(struct ofproto *ofproto,
3051 struct ofputil_table_features **featuresp,
3052 struct ofputil_table_stats **statsp)
3053{
178742f9
BP
3054 struct mf_bitmap rw_fields = oxm_writable_fields();
3055 struct mf_bitmap match = oxm_matchable_fields();
3056 struct mf_bitmap mask = oxm_maskable_fields();
3c1bb396
BP
3057
3058 struct ofputil_table_features *features;
3059 struct ofputil_table_stats *stats;
3060 int i;
3061
3c1bb396
BP
3062 features = *featuresp = xcalloc(ofproto->n_tables, sizeof *features);
3063 for (i = 0; i < ofproto->n_tables; i++) {
3064 struct ofputil_table_features *f = &features[i];
3065
3066 f->table_id = i;
3067 sprintf(f->name, "table%d", i);
3068 f->metadata_match = OVS_BE64_MAX;
3069 f->metadata_write = OVS_BE64_MAX;
afcea9ea 3070 atomic_read_relaxed(&ofproto->tables[i].miss_config, &f->miss_config);
3c1bb396
BP
3071 f->max_entries = 1000000;
3072
5dc7516b
BP
3073 bool more_tables = false;
3074 for (int j = i + 1; j < ofproto->n_tables; j++) {
3075 if (!(ofproto->tables[j].flags & OFTABLE_HIDDEN)) {
3076 bitmap_set1(f->nonmiss.next, j);
3077 more_tables = true;
3078 }
3079 }
3c1bb396 3080 f->nonmiss.instructions = (1u << N_OVS_INSTRUCTIONS) - 1;
5dc7516b 3081 if (!more_tables) {
3c1bb396
BP
3082 f->nonmiss.instructions &= ~(1u << OVSINST_OFPIT11_GOTO_TABLE);
3083 }
3084 f->nonmiss.write.ofpacts = (UINT64_C(1) << N_OFPACTS) - 1;
3085 f->nonmiss.write.set_fields = rw_fields;
3086 f->nonmiss.apply = f->nonmiss.write;
3087 f->miss = f->nonmiss;
3088
3089 f->match = match;
3090 f->mask = mask;
3091 f->wildcard = match;
3092 }
3093
3094 if (statsp) {
3095 stats = *statsp = xcalloc(ofproto->n_tables, sizeof *stats);
3096 for (i = 0; i < ofproto->n_tables; i++) {
3097 struct ofputil_table_stats *s = &stats[i];
3098 struct classifier *cls = &ofproto->tables[i].cls;
3099
3100 s->table_id = i;
3101 s->active_count = classifier_count(cls);
3fbbcba7
BP
3102 if (i == 0) {
3103 s->active_count -= connmgr_count_hidden_rules(
3104 ofproto->connmgr);
3105 }
3c1bb396
BP
3106 }
3107 } else {
3108 stats = NULL;
3109 }
3110
3111 ofproto->ofproto_class->query_tables(ofproto, features, stats);
3112
3113 for (i = 0; i < ofproto->n_tables; i++) {
3114 const struct oftable *table = &ofproto->tables[i];
3115 struct ofputil_table_features *f = &features[i];
3116
3117 if (table->name) {
3118 ovs_strzcpy(f->name, table->name, sizeof f->name);
3119 }
3120
3121 if (table->max_flows < f->max_entries) {
3122 f->max_entries = table->max_flows;
3123 }
3124 }
3125}
3126
3127static void
3128query_switch_features(struct ofproto *ofproto,
3129 bool *arp_match_ip, uint64_t *ofpacts)
3130{
3131 struct ofputil_table_features *features, *f;
3132
3133 *arp_match_ip = false;
3134 *ofpacts = 0;
3135
3136 query_tables(ofproto, &features, NULL);
3137 for (f = features; f < &features[ofproto->n_tables]; f++) {
3138 *ofpacts |= f->nonmiss.apply.ofpacts | f->miss.apply.ofpacts;
3139 if (bitmap_is_set(f->match.bm, MFF_ARP_SPA) ||
3140 bitmap_is_set(f->match.bm, MFF_ARP_TPA)) {
3141 *arp_match_ip = true;
3142 }
3143 }
3144 free(features);
3145
3146 /* Sanity check. */
3147 ovs_assert(*ofpacts & (UINT64_C(1) << OFPACT_OUTPUT));
3148}
3149
90bf1e07 3150static enum ofperr
d1e2cf21 3151handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh)
064af421 3152{
64ff1d96 3153 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
9e1fd49b 3154 struct ofputil_switch_features features;
064af421 3155 struct ofport *port;
6c1491fb 3156 bool arp_match_ip;
9e1fd49b 3157 struct ofpbuf *b;
064af421 3158
3c1bb396 3159 query_switch_features(ofproto, &arp_match_ip, &features.ofpacts);
064af421 3160
9e1fd49b
BP
3161 features.datapath_id = ofproto->datapath_id;
3162 features.n_buffers = pktbuf_capacity();
adcf00ba 3163 features.n_tables = ofproto_get_n_visible_tables(ofproto);
9e1fd49b 3164 features.capabilities = (OFPUTIL_C_FLOW_STATS | OFPUTIL_C_TABLE_STATS |
4efe455d
BP
3165 OFPUTIL_C_PORT_STATS | OFPUTIL_C_QUEUE_STATS |
3166 OFPUTIL_C_GROUP_STATS);
6c1491fb 3167 if (arp_match_ip) {
9e1fd49b 3168 features.capabilities |= OFPUTIL_C_ARP_MATCH_IP;
6c1491fb 3169 }
2e1ae200
JR
3170 /* FIXME: Fill in proper features.auxiliary_id for auxiliary connections */
3171 features.auxiliary_id = 0;
9e1fd49b
BP
3172 b = ofputil_encode_switch_features(&features, ofconn_get_protocol(ofconn),
3173 oh->xid);
64ff1d96 3174 HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) {
9e1fd49b 3175 ofputil_put_switch_features_port(&port->pp, b);
064af421 3176 }
064af421 3177
9e1fd49b 3178 ofconn_send_reply(ofconn, b);
064af421
BP
3179 return 0;
3180}
064af421 3181
90bf1e07 3182static enum ofperr
d1e2cf21 3183handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh)
064af421 3184{
64ff1d96 3185 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
064af421 3186 struct ofp_switch_config *osc;
f0fd1a17 3187 enum ofp_config_flags flags;
7257b535 3188 struct ofpbuf *buf;
959a2ecd 3189
064af421 3190 /* Send reply. */
982697a4
BP
3191 buf = ofpraw_alloc_reply(OFPRAW_OFPT_GET_CONFIG_REPLY, oh, 0);
3192 osc = ofpbuf_put_uninit(buf, sizeof *osc);
f0fd1a17 3193 flags = ofproto->frag_handling;
2e1ae200
JR
3194 /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */
3195 if (oh->version < OFP13_VERSION
3196 && ofconn_get_invalid_ttl_to_controller(ofconn)) {
f0fd1a17
PS
3197 flags |= OFPC_INVALID_TTL_TO_CONTROLLER;
3198 }
3199 osc->flags = htons(flags);
810605a2 3200 osc->miss_send_len = htons(ofconn_get_miss_send_len(ofconn));
b0421aa2 3201 ofconn_send_reply(ofconn, buf);
2d70a31a 3202
064af421
BP
3203 return 0;
3204}
064af421 3205
90bf1e07 3206static enum ofperr
982697a4 3207handle_set_config(struct ofconn *ofconn, const struct ofp_header *oh)
064af421 3208{
982697a4 3209 const struct ofp_switch_config *osc = ofpmsg_body(oh);
64ff1d96 3210 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
d1e2cf21 3211 uint16_t flags = ntohs(osc->flags);
2d70a31a 3212
7257b535 3213 if (ofconn_get_type(ofconn) != OFCONN_PRIMARY
f4f1ea7e 3214 || ofconn_get_role(ofconn) != OFPCR12_ROLE_SLAVE) {
7257b535
BP
3215 enum ofp_config_flags cur = ofproto->frag_handling;
3216 enum ofp_config_flags next = flags & OFPC_FRAG_MASK;
3217
cb22974d 3218 ovs_assert((cur & OFPC_FRAG_MASK) == cur);
7257b535
BP
3219 if (cur != next) {
3220 if (ofproto->ofproto_class->set_frag_handling(ofproto, next)) {
3221 ofproto->frag_handling = next;
3222 } else {
3223 VLOG_WARN_RL(&rl, "%s: unsupported fragment handling mode %s",
3224 ofproto->name,
3225 ofputil_frag_handling_to_string(next));
3226 }
064af421
BP
3227 }
3228 }
2e1ae200 3229 /* OFPC_INVALID_TTL_TO_CONTROLLER is deprecated in OF 1.3 */
f0fd1a17 3230 ofconn_set_invalid_ttl_to_controller(ofconn,
2e1ae200
JR
3231 (oh->version < OFP13_VERSION
3232 && flags & OFPC_INVALID_TTL_TO_CONTROLLER));
ebe482fd 3233
810605a2 3234 ofconn_set_miss_send_len(ofconn, ntohs(osc->miss_send_len));
0ad9b732 3235
064af421 3236 return 0;
064af421
BP
3237}
3238
9deba63b 3239/* Checks whether 'ofconn' is a slave controller. If so, returns an OpenFlow
90bf1e07
BP
3240 * error message code for the caller to propagate upward. Otherwise, returns
3241 * 0.
3242 *
3243 * The log message mentions 'msg_type'. */
3244static enum ofperr
3245reject_slave_controller(struct ofconn *ofconn)
9deba63b 3246{
1ce0a5fa 3247 if (ofconn_get_type(ofconn) == OFCONN_PRIMARY
f4f1ea7e 3248 && ofconn_get_role(ofconn) == OFPCR12_ROLE_SLAVE) {
20e4ec1a 3249 return OFPERR_OFPBRC_IS_SLAVE;
9deba63b
BP
3250 } else {
3251 return 0;
3252 }
3253}
3254
7e9f8266
BP
3255/* Checks that the 'ofpacts_len' bytes of action in 'ofpacts' are appropriate
3256 * for 'ofproto':
3257 *
3258 * - If they use a meter, then 'ofproto' has that meter configured.
3259 *
3260 * - If they use any groups, then 'ofproto' has that group configured.
3261 *
3262 * Returns 0 if successful, otherwise an OpenFlow error. */
9cae45dc
JR
3263static enum ofperr
3264ofproto_check_ofpacts(struct ofproto *ofproto,
7e9f8266 3265 const struct ofpact ofpacts[], size_t ofpacts_len)
9cae45dc 3266{
84d68566 3267 const struct ofpact *a;
9cae45dc
JR
3268 uint32_t mid;
3269
7e9f8266
BP
3270 mid = ofpacts_get_meter(ofpacts, ofpacts_len);
3271 if (mid && get_provider_meter_id(ofproto, mid) == UINT32_MAX) {
3272 return OFPERR_OFPMMFC_INVALID_METER;
9cae45dc
JR
3273 }
3274
84d68566 3275 OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) {
7e9f8266
BP
3276 if (a->type == OFPACT_GROUP
3277 && !ofproto_group_exists(ofproto, ofpact_get_GROUP(a)->group_id)) {
3278 return OFPERR_OFPBAC_BAD_OUT_GROUP;
84d68566
SH
3279 }
3280 }
3281
9cae45dc
JR
3282 return 0;
3283}
3284
90bf1e07 3285static enum ofperr
982697a4 3286handle_packet_out(struct ofconn *ofconn, const struct ofp_header *oh)
064af421 3287{
64ff1d96 3288 struct ofproto *p = ofconn_get_ofproto(ofconn);
c6a93eb7 3289 struct ofputil_packet_out po;
cf62fa4c 3290 struct dp_packet *payload;
f25d0cf3
BP
3291 uint64_t ofpacts_stub[1024 / 8];
3292 struct ofpbuf ofpacts;
ae412e7d 3293 struct flow flow;
90bf1e07 3294 enum ofperr error;
064af421 3295
ac51afaf
BP
3296 COVERAGE_INC(ofproto_packet_out);
3297
76589937 3298 error = reject_slave_controller(ofconn);
9deba63b 3299 if (error) {
f25d0cf3 3300 goto exit;
9deba63b
BP
3301 }
3302
c6a93eb7 3303 /* Decode message. */
f25d0cf3 3304 ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub);
982697a4 3305 error = ofputil_decode_packet_out(&po, oh, &ofpacts);
064af421 3306 if (error) {
f25d0cf3 3307 goto exit_free_ofpacts;
064af421 3308 }
430dbb14 3309 if (ofp_to_u16(po.in_port) >= p->max_ports
4e022ec0 3310 && ofp_to_u16(po.in_port) < ofp_to_u16(OFPP_MAX)) {
2e1bfcb6 3311 error = OFPERR_OFPBRC_BAD_PORT;
91858960
BP
3312 goto exit_free_ofpacts;
3313 }
064af421 3314
ac51afaf 3315 /* Get payload. */
c6a93eb7
BP
3316 if (po.buffer_id != UINT32_MAX) {
3317 error = ofconn_pktbuf_retrieve(ofconn, po.buffer_id, &payload, NULL);
3318 if (error || !payload) {
f25d0cf3 3319 goto exit_free_ofpacts;
064af421 3320 }
064af421 3321 } else {
bb622f82 3322 /* Ensure that the L3 header is 32-bit aligned. */
cf62fa4c 3323 payload = dp_packet_clone_data_with_headroom(po.packet, po.packet_len, 2);
e1154f71
BP
3324 }
3325
548de4dd 3326 /* Verify actions against packet, then send packet if successful. */
cf62fa4c 3327 flow_extract(payload, &flow);
b5e7e61a 3328 flow.in_port.ofp_port = po.in_port;
7e9f8266 3329 error = ofproto_check_ofpacts(p, po.ofpacts, po.ofpacts_len);
548de4dd
BP
3330 if (!error) {
3331 error = p->ofproto_class->packet_out(p, payload, &flow,
3332 po.ofpacts, po.ofpacts_len);
3333 }
cf62fa4c 3334 dp_packet_delete(payload);
abe529af 3335
f25d0cf3
BP
3336exit_free_ofpacts:
3337 ofpbuf_uninit(&ofpacts);
3338exit:
abe529af 3339 return error;
064af421
BP
3340}
3341
3342static void
2a6f78e0 3343update_port_config(struct ofconn *ofconn, struct ofport *port,
9e1fd49b
BP
3344 enum ofputil_port_config config,
3345 enum ofputil_port_config mask)
064af421 3346{
2a6f78e0 3347 enum ofputil_port_config toggle = (config ^ port->pp.config) & mask;
abe529af 3348
2a6f78e0
BP
3349 if (toggle & OFPUTIL_PC_PORT_DOWN
3350 && (config & OFPUTIL_PC_PORT_DOWN
3351 ? netdev_turn_flags_off(port->netdev, NETDEV_UP, NULL)
3352 : netdev_turn_flags_on(port->netdev, NETDEV_UP, NULL))) {
3353 /* We tried to bring the port up or down, but it failed, so don't
3354 * update the "down" bit. */
9e1fd49b 3355 toggle &= ~OFPUTIL_PC_PORT_DOWN;
064af421 3356 }
abe529af 3357
2a6f78e0
BP
3358 if (toggle) {
3359 enum ofputil_port_config old_config = port->pp.config;
3360 port->pp.config ^= toggle;
abe529af 3361 port->ofproto->ofproto_class->port_reconfigured(port, old_config);
2a6f78e0
BP
3362 connmgr_send_port_status(port->ofproto->connmgr, ofconn, &port->pp,
3363 OFPPR_MODIFY);
064af421
BP
3364 }
3365}
3366
90bf1e07 3367static enum ofperr
d1e2cf21 3368handle_port_mod(struct ofconn *ofconn, const struct ofp_header *oh)
064af421 3369{
64ff1d96 3370 struct ofproto *p = ofconn_get_ofproto(ofconn);
9e1fd49b 3371 struct ofputil_port_mod pm;
064af421 3372 struct ofport *port;
9e1fd49b 3373 enum ofperr error;
064af421 3374
76589937 3375 error = reject_slave_controller(ofconn);
9deba63b
BP
3376 if (error) {
3377 return error;
3378 }
064af421 3379
18cc69d9 3380 error = ofputil_decode_port_mod(oh, &pm, false);
9e1fd49b
BP
3381 if (error) {
3382 return error;
3383 }
3384
3385 port = ofproto_get_port(p, pm.port_no);
064af421 3386 if (!port) {
90bf1e07 3387 return OFPERR_OFPPMFC_BAD_PORT;
9e1fd49b 3388 } else if (!eth_addr_equals(port->pp.hw_addr, pm.hw_addr)) {
90bf1e07 3389 return OFPERR_OFPPMFC_BAD_HW_ADDR;
064af421 3390 } else {
2a6f78e0 3391 update_port_config(ofconn, port, pm.config, pm.mask);
9e1fd49b
BP
3392 if (pm.advertise) {
3393 netdev_set_advertisements(port->netdev, pm.advertise);
064af421
BP
3394 }
3395 }
3396 return 0;
3397}
3398
90bf1e07 3399static enum ofperr
3269c562 3400handle_desc_stats_request(struct ofconn *ofconn,
982697a4 3401 const struct ofp_header *request)
064af421 3402{
061bfea4
BP
3403 static const char *default_mfr_desc = "Nicira, Inc.";
3404 static const char *default_hw_desc = "Open vSwitch";
3405 static const char *default_sw_desc = VERSION;
3406 static const char *default_serial_desc = "None";
3407 static const char *default_dp_desc = "None";
3408
64ff1d96 3409 struct ofproto *p = ofconn_get_ofproto(ofconn);
064af421
BP
3410 struct ofp_desc_stats *ods;
3411 struct ofpbuf *msg;
3412
982697a4
BP
3413 msg = ofpraw_alloc_stats_reply(request, 0);
3414 ods = ofpbuf_put_zeros(msg, sizeof *ods);
061bfea4
BP
3415 ovs_strlcpy(ods->mfr_desc, p->mfr_desc ? p->mfr_desc : default_mfr_desc,
3416 sizeof ods->mfr_desc);
3417 ovs_strlcpy(ods->hw_desc, p->hw_desc ? p->hw_desc : default_hw_desc,
3418 sizeof ods->hw_desc);
3419 ovs_strlcpy(ods->sw_desc, p->sw_desc ? p->sw_desc : default_sw_desc,
3420 sizeof ods->sw_desc);
3421 ovs_strlcpy(ods->serial_num,
3422 p->serial_desc ? p->serial_desc : default_serial_desc,
3423 sizeof ods->serial_num);
3424 ovs_strlcpy(ods->dp_desc, p->dp_desc ? p->dp_desc : default_dp_desc,
3425 sizeof ods->dp_desc);
b0421aa2 3426 ofconn_send_reply(ofconn, msg);
064af421
BP
3427
3428 return 0;
3429}
3430
90bf1e07 3431static enum ofperr
3269c562 3432handle_table_stats_request(struct ofconn *ofconn,
982697a4 3433 const struct ofp_header *request)
064af421 3434{
3c1bb396
BP
3435 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3436 struct ofputil_table_features *features;
08d1e234 3437 struct ofputil_table_stats *stats;
3c1bb396 3438 struct ofpbuf *reply;
6c1491fb 3439 size_t i;
064af421 3440
3c1bb396 3441 query_tables(ofproto, &features, &stats);
254750ce 3442
3c1bb396
BP
3443 reply = ofputil_encode_table_stats_reply(request);
3444 for (i = 0; i < ofproto->n_tables; i++) {
3445 if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) {
3446 ofputil_append_table_stats_reply(reply, &stats[i], &features[i]);
254750ce
BP
3447 }
3448 }
3c1bb396 3449 ofconn_send_reply(ofconn, reply);
254750ce 3450
3c1bb396 3451 free(features);
08d1e234 3452 free(stats);
307975da 3453
064af421
BP
3454 return 0;
3455}
3456
3c4e10fb
BP
3457static enum ofperr
3458handle_table_features_request(struct ofconn *ofconn,
3459 const struct ofp_header *request)
3460{
3461 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
3462 struct ofputil_table_features *features;
ca6ba700 3463 struct ovs_list replies;
3c4e10fb
BP
3464 struct ofpbuf msg;
3465 size_t i;
3466
3467 ofpbuf_use_const(&msg, request, ntohs(request->length));
3468 ofpraw_pull_assert(&msg);
6fd6ed71 3469 if (msg.size || ofpmp_more(request)) {
3c4e10fb
BP
3470 return OFPERR_OFPTFFC_EPERM;
3471 }
3472
3473 query_tables(ofproto, &features, NULL);
3474
3475 ofpmp_init(&replies, request);
3476 for (i = 0; i < ofproto->n_tables; i++) {
3477 if (!(ofproto->tables[i].flags & OFTABLE_HIDDEN)) {
3478 ofputil_append_table_features_reply(&features[i], &replies);
3479 }
3480 }
3481 ofconn_send_replies(ofconn, &replies);
3482
3483 free(features);
3484
3485 return 0;
3486}
3487
abaad8cf 3488static void
ca6ba700 3489append_port_stat(struct ofport *port, struct ovs_list *replies)
abaad8cf 3490{
f8e4867e 3491 struct ofputil_port_stats ops = { .port_no = port->pp.port_no };
abaad8cf 3492
65e0be10
BP
3493 calc_duration(port->created, time_msec(),
3494 &ops.duration_sec, &ops.duration_nsec);
3495
d295e8e9
JP
3496 /* Intentionally ignore return value, since errors will set
3497 * 'stats' to all-1s, which is correct for OpenFlow, and
abaad8cf 3498 * netdev_get_stats() will log errors. */
f8e4867e
SH
3499 ofproto_port_get_stats(port, &ops.stats);
3500
3501 ofputil_append_port_stat(replies, &ops);
abaad8cf
JP
3502}
3503
70ae4f93
BP
3504static void
3505handle_port_request(struct ofconn *ofconn,
3506 const struct ofp_header *request, ofp_port_t port_no,
ca6ba700 3507 void (*cb)(struct ofport *, struct ovs_list *replies))
064af421 3508{
70ae4f93 3509 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
064af421 3510 struct ofport *port;
ca6ba700 3511 struct ovs_list replies;
064af421 3512
982697a4 3513 ofpmp_init(&replies, request);
7f05e7ab 3514 if (port_no != OFPP_ANY) {
70ae4f93 3515 port = ofproto_get_port(ofproto, port_no);
abaad8cf 3516 if (port) {
70ae4f93 3517 cb(port, &replies);
abaad8cf
JP
3518 }
3519 } else {
70ae4f93
BP
3520 HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) {
3521 cb(port, &replies);
abaad8cf 3522 }
064af421
BP
3523 }
3524
63f2140a 3525 ofconn_send_replies(ofconn, &replies);
70ae4f93
BP
3526}
3527
3528static enum ofperr
3529handle_port_stats_request(struct ofconn *ofconn,
3530 const struct ofp_header *request)
3531{
3532 ofp_port_t port_no;
3533 enum ofperr error;
3534
3535 error = ofputil_decode_port_stats_request(request, &port_no);
3536 if (!error) {
3537 handle_port_request(ofconn, request, port_no, append_port_stat);
3538 }
3539 return error;
3540}
3541
3542static void
ca6ba700 3543append_port_desc(struct ofport *port, struct ovs_list *replies)
70ae4f93
BP
3544{
3545 ofputil_append_port_desc_stats_reply(&port->pp, replies);
064af421
BP
3546}
3547
2be393ed
JP
3548static enum ofperr
3549handle_port_desc_stats_request(struct ofconn *ofconn,
982697a4 3550 const struct ofp_header *request)
2be393ed 3551{
70ae4f93
BP
3552 ofp_port_t port_no;
3553 enum ofperr error;
2be393ed 3554
70ae4f93
BP
3555 error = ofputil_decode_port_desc_stats_request(request, &port_no);
3556 if (!error) {
3557 handle_port_request(ofconn, request, port_no, append_port_desc);
2be393ed 3558 }
70ae4f93 3559 return error;
2be393ed
JP
3560}
3561
98eaac36
JR
3562static uint32_t
3563hash_cookie(ovs_be64 cookie)
3564{
965607c8 3565 return hash_uint64((OVS_FORCE uint64_t)cookie);
98eaac36
JR
3566}
3567
3568static void
3569cookies_insert(struct ofproto *ofproto, struct rule *rule)
2c916028 3570 OVS_REQUIRES(ofproto_mutex)
98eaac36
JR
3571{
3572 hindex_insert(&ofproto->cookies, &rule->cookie_node,
3573 hash_cookie(rule->flow_cookie));
3574}
3575
3576static void
3577cookies_remove(struct ofproto *ofproto, struct rule *rule)
2c916028 3578 OVS_REQUIRES(ofproto_mutex)
98eaac36
JR
3579{
3580 hindex_remove(&ofproto->cookies, &rule->cookie_node);
3581}
3582
c6ebb8fb 3583static void
65e0be10
BP
3584calc_duration(long long int start, long long int now,
3585 uint32_t *sec, uint32_t *nsec)
c6ebb8fb 3586{
f27f2134 3587 long long int msecs = now - start;
588cd7b5
BP
3588 *sec = msecs / 1000;
3589 *nsec = (msecs % 1000) * (1000 * 1000);
3590}
3591
48266274 3592/* Checks whether 'table_id' is 0xff or a valid table ID in 'ofproto'. Returns
554764d1
SH
3593 * true if 'table_id' is OK, false otherwise. */
3594static bool
48266274
BP
3595check_table_id(const struct ofproto *ofproto, uint8_t table_id)
3596{
554764d1 3597 return table_id == OFPTT_ALL || table_id < ofproto->n_tables;
48266274
BP
3598}
3599
5c67e4af 3600static struct oftable *
d4ce8a49 3601next_visible_table(const struct ofproto *ofproto, uint8_t table_id)
5c67e4af
BP
3602{
3603 struct oftable *table;
3604
3605 for (table = &ofproto->tables[table_id];
3606 table < &ofproto->tables[ofproto->n_tables];
3607 table++) {
3608 if (!(table->flags & OFTABLE_HIDDEN)) {
3609 return table;
3610 }
3611 }
3612
3613 return NULL;
3614}
3615
d0918789 3616static struct oftable *
d4ce8a49 3617first_matching_table(const struct ofproto *ofproto, uint8_t table_id)
064af421 3618{
6c1491fb 3619 if (table_id == 0xff) {
5c67e4af 3620 return next_visible_table(ofproto, 0);
6c1491fb
BP
3621 } else if (table_id < ofproto->n_tables) {
3622 return &ofproto->tables[table_id];
a02e5331 3623 } else {
6c1491fb 3624 return NULL;
a02e5331 3625 }
064af421
BP
3626}
3627
d0918789 3628static struct oftable *
d4ce8a49
BP
3629next_matching_table(const struct ofproto *ofproto,
3630 const struct oftable *table, uint8_t table_id)
6c1491fb 3631{
5c67e4af
BP
3632 return (table_id == 0xff
3633 ? next_visible_table(ofproto, (table - ofproto->tables) + 1)
6c1491fb
BP
3634 : NULL);
3635}
3636
d0918789 3637/* Assigns TABLE to each oftable, in turn, that matches TABLE_ID in OFPROTO:
6c1491fb
BP
3638 *
3639 * - If TABLE_ID is 0xff, this iterates over every classifier table in
5c67e4af 3640 * OFPROTO, skipping tables marked OFTABLE_HIDDEN.
6c1491fb
BP
3641 *
3642 * - If TABLE_ID is the number of a table in OFPROTO, then the loop iterates
5c67e4af
BP
3643 * only once, for that table. (This can be used to access tables marked
3644 * OFTABLE_HIDDEN.)
6c1491fb 3645 *
48266274
BP
3646 * - Otherwise, TABLE_ID isn't valid for OFPROTO, so the loop won't be
3647 * entered at all. (Perhaps you should have validated TABLE_ID with
3648 * check_table_id().)
6c1491fb
BP
3649 *
3650 * All parameters are evaluated multiple times.
3651 */
d0918789
BP
3652#define FOR_EACH_MATCHING_TABLE(TABLE, TABLE_ID, OFPROTO) \
3653 for ((TABLE) = first_matching_table(OFPROTO, TABLE_ID); \
3654 (TABLE) != NULL; \
3655 (TABLE) = next_matching_table(OFPROTO, TABLE, TABLE_ID))
6c1491fb 3656
a9b22b7f
BP
3657/* Initializes 'criteria' in a straightforward way based on the other
3658 * parameters.
3659 *
dd51dae2
BP
3660 * By default, the criteria include flows that are read-only, on the assumption
3661 * that the collected flows won't be modified. Call rule_criteria_require_rw()
3662 * if flows will be modified.
3663 *
a9b22b7f
BP
3664 * For "loose" matching, the 'priority' parameter is unimportant and may be
3665 * supplied as 0. */
3666static void
3667rule_criteria_init(struct rule_criteria *criteria, uint8_t table_id,
eb391b76 3668 const struct match *match, int priority,
a9b22b7f
BP
3669 ovs_be64 cookie, ovs_be64 cookie_mask,
3670 ofp_port_t out_port, uint32_t out_group)
3671{
3672 criteria->table_id = table_id;
3673 cls_rule_init(&criteria->cr, match, priority);
3674 criteria->cookie = cookie;
3675 criteria->cookie_mask = cookie_mask;
3676 criteria->out_port = out_port;
3677 criteria->out_group = out_group;
dd51dae2
BP
3678
3679 /* We ordinarily want to skip hidden rules, but there has to be a way for
3680 * code internal to OVS to modify and delete them, so if the criteria
3681 * specify a priority that can only be for a hidden flow, then allow hidden
3682 * rules to be selected. (This doesn't allow OpenFlow clients to meddle
3683 * with hidden flows because OpenFlow uses only a 16-bit field to specify
3684 * priority.) */
3685 criteria->include_hidden = priority > UINT16_MAX;
3686
3687 /* We assume that the criteria are being used to collect flows for reading
3688 * but not modification. Thus, we should collect read-only flows. */
3689 criteria->include_readonly = true;
3690}
3691
3692/* By default, criteria initialized by rule_criteria_init() will match flows
3693 * that are read-only, on the assumption that the collected flows won't be
3694 * modified. Call this function to match only flows that are be modifiable.
3695 *
3696 * Specify 'can_write_readonly' as false in ordinary circumstances, true if the
3697 * caller has special privileges that allow it to modify even "read-only"
3698 * flows. */
3699static void
3700rule_criteria_require_rw(struct rule_criteria *criteria,
3701 bool can_write_readonly)
3702{
3703 criteria->include_readonly = can_write_readonly;
a9b22b7f
BP
3704}
3705
3706static void
3707rule_criteria_destroy(struct rule_criteria *criteria)
3708{
3709 cls_rule_destroy(&criteria->cr);
3710}
3711
a8e547c1
BP
3712void
3713rule_collection_init(struct rule_collection *rules)
3714{
3715 rules->rules = rules->stub;
3716 rules->n = 0;
3717 rules->capacity = ARRAY_SIZE(rules->stub);
3718}
3719
3720void
3721rule_collection_add(struct rule_collection *rules, struct rule *rule)
3722{
3723 if (rules->n >= rules->capacity) {
3724 size_t old_size, new_size;
3725
3726 old_size = rules->capacity * sizeof *rules->rules;
3727 rules->capacity *= 2;
3728 new_size = rules->capacity * sizeof *rules->rules;
3729
3730 if (rules->rules == rules->stub) {
3731 rules->rules = xmalloc(new_size);
3732 memcpy(rules->rules, rules->stub, old_size);
3733 } else {
3734 rules->rules = xrealloc(rules->rules, new_size);
3735 }
3736 }
3737
3738 rules->rules[rules->n++] = rule;
3739}
3740
15aaf599
BP
3741void
3742rule_collection_ref(struct rule_collection *rules)
3743 OVS_REQUIRES(ofproto_mutex)
3744{
3745 size_t i;
3746
3747 for (i = 0; i < rules->n; i++) {
3748 ofproto_rule_ref(rules->rules[i]);
3749 }
3750}
3751
3752void
3753rule_collection_unref(struct rule_collection *rules)
3754{
3755 size_t i;
3756
3757 for (i = 0; i < rules->n; i++) {
3758 ofproto_rule_unref(rules->rules[i]);
3759 }
3760}
3761
a8e547c1
BP
3762void
3763rule_collection_destroy(struct rule_collection *rules)
3764{
3765 if (rules->rules != rules->stub) {
3766 free(rules->rules);
3767 }
bfd3dbf6
BP
3768
3769 /* Make repeated destruction harmless. */
3770 rule_collection_init(rules);
a8e547c1
BP
3771}
3772
dd51dae2
BP
3773/* Checks whether 'rule' matches 'c' and, if so, adds it to 'rules'. This
3774 * function verifies most of the criteria in 'c' itself, but the caller must
3775 * check 'c->cr' itself.
3776 *
3777 * Increments '*n_readonly' if 'rule' wasn't added because it's read-only (and
b20f4073
BP
3778 * 'c' only includes modifiable rules). */
3779static void
a9b22b7f 3780collect_rule(struct rule *rule, const struct rule_criteria *c,
dd51dae2 3781 struct rule_collection *rules, size_t *n_readonly)
15aaf599 3782 OVS_REQUIRES(ofproto_mutex)
6c1d7642 3783{
dd51dae2
BP
3784 if ((c->table_id == rule->table_id || c->table_id == 0xff)
3785 && ofproto_rule_has_out_port(rule, c->out_port)
3786 && ofproto_rule_has_out_group(rule, c->out_group)
3787 && !((rule->flow_cookie ^ c->cookie) & c->cookie_mask)
3788 && (!rule_is_hidden(rule) || c->include_hidden)) {
dd51dae2 3789 /* Rule matches all the criteria... */
834fe5cb 3790 if (!rule_is_readonly(rule) || c->include_readonly) {
dd51dae2 3791 /* ...add it. */
a8e547c1 3792 rule_collection_add(rules, rule);
dd51dae2
BP
3793 } else {
3794 /* ...except it's read-only. */
3795 ++*n_readonly;
6c1d7642 3796 }
6c1d7642
BP
3797 }
3798}
3799
a9b22b7f
BP
3800/* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches
3801 * on classifiers rules are done in the "loose" way required for OpenFlow
3802 * OFPFC_MODIFY and OFPFC_DELETE requests. Puts the selected rules on list
9ed18e46
BP
3803 * 'rules'.
3804 *
9ed18e46 3805 * Returns 0 on success, otherwise an OpenFlow error code. */
90bf1e07 3806static enum ofperr
a9b22b7f 3807collect_rules_loose(struct ofproto *ofproto,
a8e547c1
BP
3808 const struct rule_criteria *criteria,
3809 struct rule_collection *rules)
15aaf599 3810 OVS_REQUIRES(ofproto_mutex)
9ed18e46 3811{
d0918789 3812 struct oftable *table;
554764d1 3813 enum ofperr error = 0;
dd51dae2 3814 size_t n_readonly = 0;
48266274 3815
a8e547c1
BP
3816 rule_collection_init(rules);
3817
554764d1
SH
3818 if (!check_table_id(ofproto, criteria->table_id)) {
3819 error = OFPERR_OFPBRC_BAD_TABLE_ID;
a8e547c1 3820 goto exit;
48266274 3821 }
9ed18e46 3822
b8266395 3823 if (criteria->cookie_mask == OVS_BE64_MAX) {
98eaac36
JR
3824 struct rule *rule;
3825
a9b22b7f
BP
3826 HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node,
3827 hash_cookie(criteria->cookie),
98eaac36 3828 &ofproto->cookies) {
a9b22b7f 3829 if (cls_rule_is_loose_match(&rule->cr, &criteria->cr.match)) {
b20f4073 3830 collect_rule(rule, criteria, rules, &n_readonly);
98eaac36
JR
3831 }
3832 }
6c1d7642 3833 } else {
a9b22b7f 3834 FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) {
6c1d7642 3835 struct rule *rule;
9ed18e46 3836
5f0476ce 3837 CLS_FOR_EACH_TARGET (rule, cr, &table->cls, &criteria->cr) {
b20f4073 3838 collect_rule(rule, criteria, rules, &n_readonly);
9ed18e46
BP
3839 }
3840 }
3841 }
48d28ac1 3842
a8e547c1 3843exit:
dd51dae2
BP
3844 if (!error && !rules->n && n_readonly) {
3845 /* We didn't find any rules to modify. We did find some read-only
3846 * rules that we're not allowed to modify, so report that. */
3847 error = OFPERR_OFPBRC_EPERM;
3848 }
a8e547c1
BP
3849 if (error) {
3850 rule_collection_destroy(rules);
3851 }
48d28ac1 3852 return error;
9ed18e46
BP
3853}
3854
a9b22b7f
BP
3855/* Searches 'ofproto' for rules that match the criteria in 'criteria'. Matches
3856 * on classifiers rules are done in the "strict" way required for OpenFlow
3857 * OFPFC_MODIFY_STRICT and OFPFC_DELETE_STRICT requests. Puts the selected
3858 * rules on list 'rules'.
9ed18e46 3859 *
9ed18e46 3860 * Returns 0 on success, otherwise an OpenFlow error code. */
90bf1e07 3861static enum ofperr
a9b22b7f 3862collect_rules_strict(struct ofproto *ofproto,
a8e547c1
BP
3863 const struct rule_criteria *criteria,
3864 struct rule_collection *rules)
15aaf599 3865 OVS_REQUIRES(ofproto_mutex)
9ed18e46 3866{
d0918789 3867 struct oftable *table;
dd51dae2 3868 size_t n_readonly = 0;
554764d1 3869 int error = 0;
48266274 3870
a8e547c1
BP
3871 rule_collection_init(rules);
3872
554764d1
SH
3873 if (!check_table_id(ofproto, criteria->table_id)) {
3874 error = OFPERR_OFPBRC_BAD_TABLE_ID;
a8e547c1 3875 goto exit;
48266274 3876 }
9ed18e46 3877
b8266395 3878 if (criteria->cookie_mask == OVS_BE64_MAX) {
98eaac36
JR
3879 struct rule *rule;
3880
a9b22b7f
BP
3881 HINDEX_FOR_EACH_WITH_HASH (rule, cookie_node,
3882 hash_cookie(criteria->cookie),
98eaac36 3883 &ofproto->cookies) {
a9b22b7f 3884 if (cls_rule_equal(&rule->cr, &criteria->cr)) {
b20f4073 3885 collect_rule(rule, criteria, rules, &n_readonly);
98eaac36
JR
3886 }
3887 }
6c1d7642 3888 } else {
a9b22b7f 3889 FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) {
6c1d7642 3890 struct rule *rule;
9ed18e46 3891
a9b22b7f
BP
3892 rule = rule_from_cls_rule(classifier_find_rule_exactly(
3893 &table->cls, &criteria->cr));
6c1d7642 3894 if (rule) {
b20f4073 3895 collect_rule(rule, criteria, rules, &n_readonly);
9ed18e46
BP
3896 }
3897 }
3898 }
48d28ac1 3899
a8e547c1 3900exit:
b20f4073
BP
3901 if (!error && !rules->n && n_readonly) {
3902 /* We didn't find any rules to modify. We did find some read-only
3903 * rules that we're not allowed to modify, so report that. */
3904 error = OFPERR_OFPBRC_EPERM;
3905 }
a8e547c1
BP
3906 if (error) {
3907 rule_collection_destroy(rules);
3908 }
6c1d7642 3909 return error;
9ed18e46
BP
3910}
3911
f27f2134
BP
3912/* Returns 'age_ms' (a duration in milliseconds), converted to seconds and
3913 * forced into the range of a uint16_t. */
3914static int
3915age_secs(long long int age_ms)
3916{
3917 return (age_ms < 0 ? 0
3918 : age_ms >= UINT16_MAX * 1000 ? UINT16_MAX
3919 : (unsigned int) age_ms / 1000);
3920}
3921
90bf1e07 3922static enum ofperr
63f2140a 3923handle_flow_stats_request(struct ofconn *ofconn,
982697a4 3924 const struct ofp_header *request)
15aaf599 3925 OVS_EXCLUDED(ofproto_mutex)
064af421 3926{
64ff1d96 3927 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
81d1ea94 3928 struct ofputil_flow_stats_request fsr;
a9b22b7f 3929 struct rule_criteria criteria;
a8e547c1 3930 struct rule_collection rules;
ca6ba700 3931 struct ovs_list replies;
90bf1e07 3932 enum ofperr error;
a8e547c1 3933 size_t i;
09246b99 3934
982697a4 3935 error = ofputil_decode_flow_stats_request(&fsr, request);
09246b99
BP
3936 if (error) {
3937 return error;
3938 }
3939
a9b22b7f
BP
3940 rule_criteria_init(&criteria, fsr.table_id, &fsr.match, 0, fsr.cookie,
3941 fsr.cookie_mask, fsr.out_port, fsr.out_group);
15aaf599
BP
3942
3943 ovs_mutex_lock(&ofproto_mutex);
a9b22b7f
BP
3944 error = collect_rules_loose(ofproto, &criteria, &rules);
3945 rule_criteria_destroy(&criteria);
15aaf599
BP
3946 if (!error) {
3947 rule_collection_ref(&rules);
3948 }
3949 ovs_mutex_unlock(&ofproto_mutex);
3950
9ed18e46
BP
3951 if (error) {
3952 return error;
3953 }
5ecc9d81 3954
982697a4 3955 ofpmp_init(&replies, request);
a8e547c1
BP
3956 for (i = 0; i < rules.n; i++) {
3957 struct rule *rule = rules.rules[i];
f27f2134 3958 long long int now = time_msec();
9ed18e46 3959 struct ofputil_flow_stats fs;
15aaf599 3960 long long int created, used, modified;
dc723c44 3961 const struct rule_actions *actions;
15aaf599 3962 enum ofputil_flow_mod_flags flags;
a3779dbc 3963
d10976b7 3964 ovs_mutex_lock(&rule->mutex);
15aaf599 3965 fs.cookie = rule->flow_cookie;
a3779dbc
EJ
3966 fs.idle_timeout = rule->idle_timeout;
3967 fs.hard_timeout = rule->hard_timeout;
ca26eb44 3968 fs.importance = rule->importance;
15aaf599 3969 created = rule->created;
15aaf599 3970 modified = rule->modified;
06a0f3e2 3971 actions = rule_get_actions(rule);
15aaf599 3972 flags = rule->flags;
d10976b7 3973 ovs_mutex_unlock(&rule->mutex);
a3779dbc 3974
dc437090
JR
3975 ofproto->ofproto_class->rule_get_stats(rule, &fs.packet_count,
3976 &fs.byte_count, &used);
3977
15aaf599
BP
3978 minimatch_expand(&rule->cr.match, &fs.match);
3979 fs.table_id = rule->table_id;
3980 calc_duration(created, now, &fs.duration_sec, &fs.duration_nsec);
3981 fs.priority = rule->cr.priority;
3982 fs.idle_age = age_secs(now - used);
3983 fs.hard_age = age_secs(now - modified);
15aaf599
BP
3984 fs.ofpacts = actions->ofpacts;
3985 fs.ofpacts_len = actions->ofpacts_len;
3f517bcd 3986
15aaf599 3987 fs.flags = flags;
9ed18e46 3988 ofputil_append_flow_stats_reply(&fs, &replies);
3c4486a5 3989 }
15aaf599
BP
3990
3991 rule_collection_unref(&rules);
a8e547c1
BP
3992 rule_collection_destroy(&rules);
3993
63f2140a 3994 ofconn_send_replies(ofconn, &replies);
5ecc9d81 3995
09246b99
BP
3996 return 0;
3997}
3998
4f2cad2c 3999static void
3394b5b6 4000flow_stats_ds(struct rule *rule, struct ds *results)
4f2cad2c 4001{
4f2cad2c 4002 uint64_t packet_count, byte_count;
dc723c44 4003 const struct rule_actions *actions;
dc437090 4004 long long int created, used;
4f2cad2c 4005
dc437090
JR
4006 rule->ofproto->ofproto_class->rule_get_stats(rule, &packet_count,
4007 &byte_count, &used);
4f2cad2c 4008
15aaf599 4009 ovs_mutex_lock(&rule->mutex);
06a0f3e2 4010 actions = rule_get_actions(rule);
15aaf599
BP
4011 created = rule->created;
4012 ovs_mutex_unlock(&rule->mutex);
4013
6c1491fb
BP
4014 if (rule->table_id != 0) {
4015 ds_put_format(results, "table_id=%"PRIu8", ", rule->table_id);
4016 }
15aaf599 4017 ds_put_format(results, "duration=%llds, ", (time_msec() - created) / 1000);
4f2cad2c
JP
4018 ds_put_format(results, "n_packets=%"PRIu64", ", packet_count);
4019 ds_put_format(results, "n_bytes=%"PRIu64", ", byte_count);
cb833cf6 4020 cls_rule_format(&rule->cr, results);
a5df0e72 4021 ds_put_char(results, ',');
15aaf599 4022
455ecd77 4023 ds_put_cstr(results, "actions=");
15aaf599
BP
4024 ofpacts_format(actions->ofpacts, actions->ofpacts_len, results);
4025
4f2cad2c
JP
4026 ds_put_cstr(results, "\n");
4027}
4028
d295e8e9 4029/* Adds a pretty-printed description of all flows to 'results', including
ee8b231c 4030 * hidden flows (e.g., set up by in-band control). */
4f2cad2c
JP
4031void
4032ofproto_get_all_flows(struct ofproto *p, struct ds *results)
4033{
d0918789 4034 struct oftable *table;
6c1491fb 4035
d0918789 4036 OFPROTO_FOR_EACH_TABLE (table, p) {
6c1491fb 4037 struct rule *rule;
064af421 4038
5f0476ce 4039 CLS_FOR_EACH (rule, cr, &table->cls) {
6c1491fb
BP
4040 flow_stats_ds(rule, results);
4041 }
064af421 4042 }
064af421
BP
4043}
4044
b5827b24
BP
4045/* Obtains the NetFlow engine type and engine ID for 'ofproto' into
4046 * '*engine_type' and '*engine_id', respectively. */
4047void
4048ofproto_get_netflow_ids(const struct ofproto *ofproto,
4049 uint8_t *engine_type, uint8_t *engine_id)
4050{
abe529af 4051 ofproto->ofproto_class->get_netflow_ids(ofproto, engine_type, engine_id);
b5827b24
BP
4052}
4053
8f5514fe
AW
4054/* Checks the status change of CFM on 'ofport'.
4055 *
4056 * Returns true if 'ofproto_class' does not support 'cfm_status_changed'. */
4057bool
4058ofproto_port_cfm_status_changed(struct ofproto *ofproto, ofp_port_t ofp_port)
4059{
4060 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
4061 return (ofport && ofproto->ofproto_class->cfm_status_changed
4062 ? ofproto->ofproto_class->cfm_status_changed(ofport)
4063 : true);
4064}
4065
88bf179a
AW
4066/* Checks the status of CFM configured on 'ofp_port' within 'ofproto'.
4067 * Returns 0 if the port's CFM status was successfully stored into
4068 * '*status'. Returns positive errno if the port did not have CFM
8f5514fe 4069 * configured.
9a9e3786 4070 *
88bf179a
AW
4071 * The caller must provide and own '*status', and must free 'status->rmps'.
4072 * '*status' is indeterminate if the return value is non-zero. */
4073int
4e022ec0 4074ofproto_port_get_cfm_status(const struct ofproto *ofproto, ofp_port_t ofp_port,
685acfd9 4075 struct cfm_status *status)
3967a833
MM
4076{
4077 struct ofport *ofport = ofproto_get_port(ofproto, ofp_port);
88bf179a
AW
4078 return (ofport && ofproto->ofproto_class->get_cfm_status
4079 ? ofproto->ofproto_class->get_cfm_status(ofport, status)
4080 : EOPNOTSUPP);
3967a833
MM
4081}
4082
90bf1e07 4083static enum ofperr
76c93b22 4084handle_aggregate_stats_request(struct ofconn *ofconn,
982697a4 4085 const struct ofp_header *oh)
15aaf599 4086 OVS_EXCLUDED(ofproto_mutex)
27d34fce 4087{
76c93b22 4088 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
81d1ea94 4089 struct ofputil_flow_stats_request request;
76c93b22 4090 struct ofputil_aggregate_stats stats;
5e9d0469 4091 bool unknown_packets, unknown_bytes;
a9b22b7f 4092 struct rule_criteria criteria;
a8e547c1 4093 struct rule_collection rules;
76c93b22 4094 struct ofpbuf *reply;
90bf1e07 4095 enum ofperr error;
a8e547c1 4096 size_t i;
27d34fce 4097
982697a4 4098 error = ofputil_decode_flow_stats_request(&request, oh);
76c93b22
BP
4099 if (error) {
4100 return error;
4101 }
5ecc9d81 4102
a9b22b7f
BP
4103 rule_criteria_init(&criteria, request.table_id, &request.match, 0,
4104 request.cookie, request.cookie_mask,
4105 request.out_port, request.out_group);
15aaf599
BP
4106
4107 ovs_mutex_lock(&ofproto_mutex);
a9b22b7f
BP
4108 error = collect_rules_loose(ofproto, &criteria, &rules);
4109 rule_criteria_destroy(&criteria);
15aaf599
BP
4110 if (!error) {
4111 rule_collection_ref(&rules);
4112 }
4113 ovs_mutex_unlock(&ofproto_mutex);
4114
9ed18e46
BP
4115 if (error) {
4116 return error;
4117 }
3c4486a5 4118
9ed18e46 4119 memset(&stats, 0, sizeof stats);
5e9d0469 4120 unknown_packets = unknown_bytes = false;
a8e547c1
BP
4121 for (i = 0; i < rules.n; i++) {
4122 struct rule *rule = rules.rules[i];
9ed18e46
BP
4123 uint64_t packet_count;
4124 uint64_t byte_count;
dc437090 4125 long long int used;
5ecc9d81 4126
9ed18e46 4127 ofproto->ofproto_class->rule_get_stats(rule, &packet_count,
dc437090 4128 &byte_count, &used);
5ecc9d81 4129
5e9d0469
BP
4130 if (packet_count == UINT64_MAX) {
4131 unknown_packets = true;
4132 } else {
4133 stats.packet_count += packet_count;
4134 }
4135
4136 if (byte_count == UINT64_MAX) {
4137 unknown_bytes = true;
4138 } else {
4139 stats.byte_count += byte_count;
4140 }
4141
9ed18e46 4142 stats.flow_count++;
3c4486a5 4143 }
5e9d0469
BP
4144 if (unknown_packets) {
4145 stats.packet_count = UINT64_MAX;
4146 }
4147 if (unknown_bytes) {
4148 stats.byte_count = UINT64_MAX;
4149 }
27d34fce 4150
15aaf599 4151 rule_collection_unref(&rules);
a8e547c1
BP
4152 rule_collection_destroy(&rules);
4153
982697a4 4154 reply = ofputil_encode_aggregate_stats_reply(&stats, oh);
76c93b22 4155 ofconn_send_reply(ofconn, reply);
09246b99
BP
4156
4157 return 0;
4158}
4159
c1c9c9c4 4160struct queue_stats_cbdata {
ca0f572c 4161 struct ofport *ofport;
ca6ba700 4162 struct ovs_list replies;
6dc34a0d 4163 long long int now;
c1c9c9c4
BP
4164};
4165
4166static void
db9220c3 4167put_queue_stats(struct queue_stats_cbdata *cbdata, uint32_t queue_id,
c1c9c9c4
BP
4168 const struct netdev_queue_stats *stats)
4169{
6dc34a0d 4170 struct ofputil_queue_stats oqs;
c1c9c9c4 4171
6dc34a0d
BP
4172 oqs.port_no = cbdata->ofport->pp.port_no;
4173 oqs.queue_id = queue_id;
4174 oqs.tx_bytes = stats->tx_bytes;
4175 oqs.tx_packets = stats->tx_packets;
4176 oqs.tx_errors = stats->tx_errors;
4177 if (stats->created != LLONG_MIN) {
4178 calc_duration(stats->created, cbdata->now,
4179 &oqs.duration_sec, &oqs.duration_nsec);
4180 } else {
4181 oqs.duration_sec = oqs.duration_nsec = UINT32_MAX;
4182 }
64626975 4183 ofputil_append_queue_stat(&cbdata->replies, &oqs);
c1c9c9c4
BP
4184}
4185
4186static void
db9220c3 4187handle_queue_stats_dump_cb(uint32_t queue_id,
c1c9c9c4
BP
4188 struct netdev_queue_stats *stats,
4189 void *cbdata_)
4190{
4191 struct queue_stats_cbdata *cbdata = cbdata_;
4192
4193 put_queue_stats(cbdata, queue_id, stats);
4194}
4195
0414d158 4196static enum ofperr
ca0f572c 4197handle_queue_stats_for_port(struct ofport *port, uint32_t queue_id,
c1c9c9c4
BP
4198 struct queue_stats_cbdata *cbdata)
4199{
ca0f572c 4200 cbdata->ofport = port;
c1c9c9c4
BP
4201 if (queue_id == OFPQ_ALL) {
4202 netdev_dump_queue_stats(port->netdev,
4203 handle_queue_stats_dump_cb, cbdata);
4204 } else {
4205 struct netdev_queue_stats stats;
4206
1ac788f6
BP
4207 if (!netdev_get_queue_stats(port->netdev, queue_id, &stats)) {
4208 put_queue_stats(cbdata, queue_id, &stats);
0414d158
BP
4209 } else {
4210 return OFPERR_OFPQOFC_BAD_QUEUE;
1ac788f6 4211 }
c1c9c9c4 4212 }
0414d158 4213 return 0;
c1c9c9c4
BP
4214}
4215
90bf1e07 4216static enum ofperr
63f2140a 4217handle_queue_stats_request(struct ofconn *ofconn,
982697a4 4218 const struct ofp_header *rq)
c1c9c9c4 4219{
64ff1d96 4220 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
c1c9c9c4 4221 struct queue_stats_cbdata cbdata;
0414d158 4222 struct ofport *port;
0414d158 4223 enum ofperr error;
64626975 4224 struct ofputil_queue_stats_request oqsr;
c1c9c9c4 4225
c1c9c9c4
BP
4226 COVERAGE_INC(ofproto_queue_req);
4227
982697a4 4228 ofpmp_init(&cbdata.replies, rq);
6dc34a0d 4229 cbdata.now = time_msec();
c1c9c9c4 4230
64626975
SH
4231 error = ofputil_decode_queue_stats_request(rq, &oqsr);
4232 if (error) {
4233 return error;
4234 }
4235
7f05e7ab 4236 if (oqsr.port_no == OFPP_ANY) {
0414d158 4237 error = OFPERR_OFPQOFC_BAD_QUEUE;
4e8e4213 4238 HMAP_FOR_EACH (port, hmap_node, &ofproto->ports) {
64626975 4239 if (!handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata)) {
0414d158
BP
4240 error = 0;
4241 }
c1c9c9c4 4242 }
0414d158 4243 } else {
64626975 4244 port = ofproto_get_port(ofproto, oqsr.port_no);
0414d158 4245 error = (port
64626975 4246 ? handle_queue_stats_for_port(port, oqsr.queue_id, &cbdata)
0414d158
BP
4247 : OFPERR_OFPQOFC_BAD_PORT);
4248 }
4249 if (!error) {
4250 ofconn_send_replies(ofconn, &cbdata.replies);
c1c9c9c4 4251 } else {
63f2140a 4252 ofpbuf_list_delete(&cbdata.replies);
c1c9c9c4 4253 }
c1c9c9c4 4254
0414d158 4255 return error;
c1c9c9c4 4256}
7ee20df1 4257
2e31a9b8 4258static enum ofperr
834fe5cb 4259evict_rules_from_table(struct oftable *table, unsigned int extra_space)
15aaf599 4260 OVS_REQUIRES(ofproto_mutex)
2e31a9b8 4261{
802f84ff
JR
4262 enum ofperr error = 0;
4263 struct rule_collection rules;
4264 unsigned int count = classifier_count(&table->cls) + extra_space;
4265 unsigned int max_flows = table->max_flows;
4266
4267 rule_collection_init(&rules);
4268
4269 while (count-- > max_flows) {
2e31a9b8 4270 struct rule *rule;
8037acb4 4271
2e31a9b8 4272 if (!choose_rule_to_evict(table, &rule)) {
802f84ff
JR
4273 error = OFPERR_OFPFMFC_TABLE_FULL;
4274 break;
2e31a9b8 4275 } else {
802f84ff
JR
4276 eviction_group_remove_rule(rule);
4277 rule_collection_add(&rules, rule);
2e31a9b8 4278 }
8037acb4 4279 }
802f84ff
JR
4280 delete_flows__(&rules, OFPRR_EVICTION, NULL);
4281 rule_collection_destroy(&rules);
2e31a9b8 4282
802f84ff 4283 return error;
8037acb4
BP
4284}
4285
18080541
BP
4286static bool
4287is_conjunction(const struct ofpact *ofpacts, size_t ofpacts_len)
4288{
4289 return ofpacts_len > 0 && ofpacts->type == OFPACT_CONJUNCTION;
4290}
4291
4292static void
4293get_conjunctions(const struct ofputil_flow_mod *fm,
4294 struct cls_conjunction **conjsp, size_t *n_conjsp)
4295 OVS_REQUIRES(ofproto_mutex)
4296{
4297 struct cls_conjunction *conjs = NULL;
4298 int n_conjs = 0;
4299
4300 if (is_conjunction(fm->ofpacts, fm->ofpacts_len)) {
4301 const struct ofpact *ofpact;
4302 int i;
4303
4304 n_conjs = 0;
4305 OFPACT_FOR_EACH (ofpact, fm->ofpacts, fm->ofpacts_len) {
4306 n_conjs++;
4307 }
4308
4309 conjs = xzalloc(n_conjs * sizeof *conjs);
4310 i = 0;
4311 OFPACT_FOR_EACH (ofpact, fm->ofpacts, fm->ofpacts_len) {
4312 struct ofpact_conjunction *oc = ofpact_get_CONJUNCTION(ofpact);
4313 conjs[i].clause = oc->clause;
4314 conjs[i].n_clauses = oc->n_clauses;
4315 conjs[i].id = oc->id;
4316 i++;
4317 }
4318 }
4319
4320 *conjsp = conjs;
4321 *n_conjsp = n_conjs;
4322}
4323
4324static void
4325set_conjunctions(struct rule *rule, const struct cls_conjunction *conjs,
4326 size_t n_conjs)
4327 OVS_REQUIRES(ofproto_mutex)
4328{
4329 struct cls_rule *cr = CONST_CAST(struct cls_rule *, &rule->cr);
4330
4331 cls_rule_set_conjunctions(cr, conjs, n_conjs);
4332}
4333
79eee1eb
BP
4334/* Implements OFPFC_ADD and the cases for OFPFC_MODIFY and OFPFC_MODIFY_STRICT
4335 * in which no matching flow already exists in the flow table.
4336 *
4337 * Adds the flow specified by 'ofm', which is followed by 'n_actions'
75a75043 4338 * ofp_actions, to the ofproto's flow table. Returns 0 on success, an OpenFlow
90bf1e07
BP
4339 * error code on failure, or OFPROTO_POSTPONE if the operation cannot be
4340 * initiated now but may be retried later.
79eee1eb 4341 *
2509616e 4342 * The caller retains ownership of 'fm->ofpacts'.
f25d0cf3 4343 *
79eee1eb
BP
4344 * 'ofconn' is used to retrieve the packet buffer specified in ofm->buffer_id,
4345 * if any. */
90bf1e07 4346static enum ofperr
baae3d02
BP
4347add_flow(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4348 const struct flow_mod_requester *req)
15aaf599 4349 OVS_REQUIRES(ofproto_mutex)
064af421 4350{
d0918789 4351 struct oftable *table;
8037acb4 4352 struct cls_rule cr;
064af421 4353 struct rule *rule;
5a361239 4354 uint8_t table_id;
554764d1 4355 int error = 0;
064af421 4356
554764d1
SH
4357 if (!check_table_id(ofproto, fm->table_id)) {
4358 error = OFPERR_OFPBRC_BAD_TABLE_ID;
48266274
BP
4359 return error;
4360 }
4361
7ee20df1
BP
4362 /* Pick table. */
4363 if (fm->table_id == 0xff) {
13521ff5 4364 if (ofproto->ofproto_class->rule_choose_table) {
81a76618
BP
4365 error = ofproto->ofproto_class->rule_choose_table(ofproto,
4366 &fm->match,
7ee20df1
BP
4367 &table_id);
4368 if (error) {
4369 return error;
4370 }
cb22974d 4371 ovs_assert(table_id < ofproto->n_tables);
7ee20df1 4372 } else {
5a361239 4373 table_id = 0;
7ee20df1
BP
4374 }
4375 } else if (fm->table_id < ofproto->n_tables) {
5a361239 4376 table_id = fm->table_id;
7ee20df1 4377 } else {
c22c56bd 4378 return OFPERR_OFPBRC_BAD_TABLE_ID;
064af421
BP
4379 }
4380
5a361239 4381 table = &ofproto->tables[table_id];
834fe5cb
BP
4382 if (table->flags & OFTABLE_READONLY
4383 && !(fm->flags & OFPUTIL_FF_NO_READONLY)) {
5c67e4af
BP
4384 return OFPERR_OFPBRC_EPERM;
4385 }
4386
adcf00ba
AZ
4387 if (!(fm->flags & OFPUTIL_FF_HIDDEN_FIELDS)) {
4388 if (!match_has_default_hidden_fields(&fm->match)) {
4389 VLOG_WARN_RL(&rl, "%s: (add_flow) only internal flows can set "
4390 "non-default values to hidden fields", ofproto->name);
4391 return OFPERR_OFPBRC_EPERM;
4392 }
4393 }
4394
8037acb4
BP
4395 cls_rule_init(&cr, &fm->match, fm->priority);
4396
b277c7cc 4397 /* Transform "add" into "modify" if there's an existing identical flow. */
8037acb4 4398 rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls, &cr));
b277c7cc 4399 if (rule) {
834fe5cb
BP
4400 struct rule_collection rules;
4401
8037acb4 4402 cls_rule_destroy(&cr);
b277c7cc 4403
834fe5cb
BP
4404 rule_collection_init(&rules);
4405 rule_collection_add(&rules, rule);
4406 fm->modify_cookie = true;
4407 error = modify_flows__(ofproto, fm, &rules, req);
4408 rule_collection_destroy(&rules);
a8e547c1 4409
834fe5cb 4410 return error;
b277c7cc
BP
4411 }
4412
81a76618 4413 /* Check for overlap, if requested. */
0fb88c18 4414 if (fm->flags & OFPUTIL_FF_CHECK_OVERLAP) {
afae68b1 4415 if (classifier_rule_overlaps(&table->cls, &cr)) {
8037acb4 4416 cls_rule_destroy(&cr);
c09f755d
BP
4417 return OFPERR_OFPFMFC_OVERLAP;
4418 }
7ee20df1 4419 }
81a76618 4420
8037acb4 4421 /* If necessary, evict an existing rule to clear out space. */
834fe5cb 4422 error = evict_rules_from_table(table, 1);
8037acb4
BP
4423 if (error) {
4424 cls_rule_destroy(&cr);
4425 return error;
4426 }
2e1ae200 4427
8037acb4 4428 /* Allocate new rule. */
d6671377
JR
4429 error = ofproto_rule_create(ofproto, fm, &cr, table - ofproto->tables,
4430 &rule);
b277c7cc 4431 if (error) {
8037acb4 4432 return error;
064af421 4433 }
8037acb4 4434
bc5e6a91 4435 ofproto_rule_insert__(ofproto, rule);
1ebeaaa7 4436
802f84ff 4437 classifier_defer(&table->cls);
18080541
BP
4438
4439 struct cls_conjunction *conjs;
4440 size_t n_conjs;
4441 get_conjunctions(fm, &conjs, &n_conjs);
4442 classifier_insert(&table->cls, &rule->cr, conjs, n_conjs);
4443 free(conjs);
8037acb4 4444
b20f4073 4445 error = ofproto->ofproto_class->rule_insert(rule);
834fe5cb
BP
4446 if (error) {
4447 oftable_remove_rule(rule);
4448 ofproto_rule_unref(rule);
4449 return error;
4450 }
fc02ecc7 4451 cls_rule_make_visible(&rule->cr);
802f84ff
JR
4452 classifier_publish(&table->cls);
4453
d6671377 4454 learned_cookies_inc(ofproto, rule_get_actions(rule));
062fea06 4455
834fe5cb
BP
4456 if (minimask_get_vid_mask(&rule->cr.match.mask) == VLAN_VID_MASK) {
4457 if (ofproto->vlan_bitmap) {
4458 uint16_t vid = miniflow_get_vid(&rule->cr.match.flow);
4459 if (!bitmap_is_set(ofproto->vlan_bitmap, vid)) {
4460 bitmap_set1(ofproto->vlan_bitmap, vid);
4461 ofproto->vlans_changed = true;
4462 }
4463 } else {
4464 ofproto->vlans_changed = true;
4465 }
4466 }
4467
4468 ofmonitor_report(ofproto->connmgr, rule, NXFME_ADDED, 0,
cdbdeeda 4469 req ? req->ofconn : NULL, req ? req->xid : 0, NULL);
834fe5cb
BP
4470
4471 return req ? send_buffered_packet(req->ofconn, fm->buffer_id, rule) : 0;
064af421 4472}
79eee1eb
BP
4473\f
4474/* OFPFC_MODIFY and OFPFC_MODIFY_STRICT. */
064af421 4475
9ed18e46
BP
4476/* Modifies the rules listed in 'rules', changing their actions to match those
4477 * in 'fm'.
79eee1eb 4478 *
9ed18e46
BP
4479 * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
4480 * if any.
4481 *
4482 * Returns 0 on success, otherwise an OpenFlow error code. */
90bf1e07 4483static enum ofperr
baae3d02
BP
4484modify_flows__(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4485 const struct rule_collection *rules,
4486 const struct flow_mod_requester *req)
15aaf599 4487 OVS_REQUIRES(ofproto_mutex)
79eee1eb 4488{
55951e15 4489 struct ovs_list dead_cookies = OVS_LIST_INITIALIZER(&dead_cookies);
834fe5cb 4490 enum nx_flow_update_event event;
a8e547c1 4491 size_t i;
79eee1eb 4492
af822017
BP
4493 if (ofproto->ofproto_class->rule_premodify_actions) {
4494 for (i = 0; i < rules->n; i++) {
4495 struct rule *rule = rules->rules[i];
cb220b39 4496 enum ofperr error;
af822017 4497
dd51dae2
BP
4498 error = ofproto->ofproto_class->rule_premodify_actions(
4499 rule, fm->ofpacts, fm->ofpacts_len);
4500 if (error) {
4501 return error;
af822017
BP
4502 }
4503 }
4504 }
4505
834fe5cb 4506 event = fm->command == OFPFC_ADD ? NXFME_ADDED : NXFME_MODIFIED;
a8e547c1
BP
4507 for (i = 0; i < rules->n; i++) {
4508 struct rule *rule = rules->rules[i];
08043761 4509
834fe5cb
BP
4510 /* 'fm' says that */
4511 bool change_cookie = (fm->modify_cookie
4512 && fm->new_cookie != OVS_BE64_MAX
4513 && fm->new_cookie != rule->flow_cookie);
2e1ae200 4514
834fe5cb
BP
4515 const struct rule_actions *actions = rule_get_actions(rule);
4516 bool change_actions = !ofpacts_equal(fm->ofpacts, fm->ofpacts_len,
4517 actions->ofpacts,
4518 actions->ofpacts_len);
5c67e4af 4519
834fe5cb 4520 bool reset_counters = (fm->flags & OFPUTIL_FF_RESET_COUNTS) != 0;
a7d94793 4521
834fe5cb
BP
4522 long long int now = time_msec();
4523
834fe5cb
BP
4524 if (change_cookie) {
4525 cookies_remove(ofproto, rule);
98eaac36 4526 }
834fe5cb
BP
4527
4528 ovs_mutex_lock(&rule->mutex);
4529 if (fm->command == OFPFC_ADD) {
b277c7cc
BP
4530 rule->idle_timeout = fm->idle_timeout;
4531 rule->hard_timeout = fm->hard_timeout;
ca26eb44 4532 rule->importance = fm->importance;
3f517bcd 4533 rule->flags = fm->flags & OFPUTIL_FF_STATE;
834fe5cb
BP
4534 rule->created = now;
4535 }
4536 if (change_cookie) {
4537 rule->flow_cookie = fm->new_cookie;
4538 }
4539 rule->modified = now;
4540 ovs_mutex_unlock(&rule->mutex);
4541
4542 if (change_cookie) {
4543 cookies_insert(ofproto, rule);
4544 }
4545 if (fm->command == OFPFC_ADD) {
ca26eb44 4546 if (fm->idle_timeout || fm->hard_timeout || fm->importance) {
b277c7cc
BP
4547 if (!rule->eviction_group) {
4548 eviction_group_add_rule(rule);
4549 }
4550 } else {
4551 eviction_group_remove_rule(rule);
4552 }
4553 }
4554
834fe5cb 4555 if (change_actions) {
18080541
BP
4556 /* We have to change the actions. The rule's conjunctive match set
4557 * is a function of its actions, so we need to update that too. The
4558 * conjunctive match set is used in the lookup process to figure
4559 * which (if any) collection of conjunctive sets the packet matches
4560 * with. However, a rule with conjunction actions is never to be
4561 * returned as a classifier lookup result. To make sure a rule with
4562 * conjunction actions is not returned as a lookup result, we update
4563 * them in a carefully chosen order:
4564 *
4565 * - If we're adding a conjunctive match set where there wasn't one
4566 * before, we have to make the conjunctive match set available to
4567 * lookups before the rule's actions are changed, as otherwise
4568 * rule with a conjunction action could be returned as a lookup
4569 * result.
4570 *
4571 * - To clear some nonempty conjunctive set, we set the rule's
4572 * actions first, so that a lookup can't return a rule with
4573 * conjunction actions.
4574 *
4575 * - Otherwise, order doesn't matter for changing one nonempty
4576 * conjunctive match set to some other nonempty set, since the
4577 * rule's actions are not seen by the classifier, and hence don't
4578 * matter either before or after the change. */
4579 struct cls_conjunction *conjs;
4580 size_t n_conjs;
4581 get_conjunctions(fm, &conjs, &n_conjs);
4582
4583 if (n_conjs) {
4584 set_conjunctions(rule, conjs, n_conjs);
4585 }
4c7562c5 4586 ovsrcu_set(&rule->actions, rule_actions_create(fm->ofpacts,
834fe5cb 4587 fm->ofpacts_len));
18080541
BP
4588 if (!conjs) {
4589 set_conjunctions(rule, conjs, n_conjs);
4590 }
4591
4592 free(conjs);
834fe5cb 4593 }
884e1dc4 4594
834fe5cb 4595 if (change_actions || reset_counters) {
af822017 4596 ofproto->ofproto_class->rule_modify_actions(rule, reset_counters);
623e1caf 4597 }
834fe5cb
BP
4598
4599 if (event != NXFME_MODIFIED || change_actions || change_cookie) {
4600 ofmonitor_report(ofproto->connmgr, rule, event, 0,
cdbdeeda
SH
4601 req ? req->ofconn : NULL, req ? req->xid : 0,
4602 change_actions ? actions : NULL);
834fe5cb 4603 }
35f48b8b
BP
4604
4605 if (change_actions) {
4606 learned_cookies_inc(ofproto, rule_get_actions(rule));
4607 learned_cookies_dec(ofproto, actions, &dead_cookies);
cdbdeeda 4608 rule_actions_destroy(actions);
35f48b8b 4609 }
834fe5cb 4610 }
35f48b8b 4611 learned_cookies_flush(ofproto, &dead_cookies);
834fe5cb
BP
4612
4613 if (fm->buffer_id != UINT32_MAX && req) {
cb220b39
SH
4614 return send_buffered_packet(req->ofconn, fm->buffer_id,
4615 rules->rules[0]);
5ecc9d81 4616 }
79eee1eb 4617
cb220b39 4618 return 0;
9ed18e46
BP
4619}
4620
9387b970 4621static enum ofperr
baae3d02
BP
4622modify_flows_add(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4623 const struct flow_mod_requester *req)
15aaf599 4624 OVS_REQUIRES(ofproto_mutex)
9387b970 4625{
b8266395 4626 if (fm->cookie_mask != htonll(0) || fm->new_cookie == OVS_BE64_MAX) {
9387b970
SH
4627 return 0;
4628 }
baae3d02 4629 return add_flow(ofproto, fm, req);
9387b970
SH
4630}
4631
90bf1e07
BP
4632/* Implements OFPFC_MODIFY. Returns 0 on success or an OpenFlow error code on
4633 * failure.
9ed18e46
BP
4634 *
4635 * 'ofconn' is used to retrieve the packet buffer specified in fm->buffer_id,
4636 * if any. */
90bf1e07 4637static enum ofperr
baae3d02
BP
4638modify_flows_loose(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4639 const struct flow_mod_requester *req)
15aaf599 4640 OVS_REQUIRES(ofproto_mutex)
9ed18e46 4641{
a9b22b7f 4642 struct rule_criteria criteria;
a8e547c1 4643 struct rule_collection rules;
9ed18e46
BP
4644 int error;
4645
a9b22b7f
BP
4646 rule_criteria_init(&criteria, fm->table_id, &fm->match, 0,
4647 fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG11_ANY);
dd51dae2
BP
4648 rule_criteria_require_rw(&criteria,
4649 (fm->flags & OFPUTIL_FF_NO_READONLY) != 0);
a9b22b7f
BP
4650 error = collect_rules_loose(ofproto, &criteria, &rules);
4651 rule_criteria_destroy(&criteria);
4652
a8e547c1
BP
4653 if (!error) {
4654 error = (rules.n > 0
baae3d02
BP
4655 ? modify_flows__(ofproto, fm, &rules, req)
4656 : modify_flows_add(ofproto, fm, req));
623e1caf 4657 }
a8e547c1
BP
4658
4659 rule_collection_destroy(&rules);
4660
4661 return error;
79eee1eb
BP
4662}
4663
4664/* Implements OFPFC_MODIFY_STRICT. Returns 0 on success or an OpenFlow error
baae3d02 4665 * code on failure. */
90bf1e07 4666static enum ofperr
baae3d02
BP
4667modify_flow_strict(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4668 const struct flow_mod_requester *req)
15aaf599 4669 OVS_REQUIRES(ofproto_mutex)
79eee1eb 4670{
a9b22b7f 4671 struct rule_criteria criteria;
a8e547c1 4672 struct rule_collection rules;
6c1491fb
BP
4673 int error;
4674
a9b22b7f
BP
4675 rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority,
4676 fm->cookie, fm->cookie_mask, OFPP_ANY, OFPG11_ANY);
dd51dae2
BP
4677 rule_criteria_require_rw(&criteria,
4678 (fm->flags & OFPUTIL_FF_NO_READONLY) != 0);
a9b22b7f
BP
4679 error = collect_rules_strict(ofproto, &criteria, &rules);
4680 rule_criteria_destroy(&criteria);
4681
a8e547c1
BP
4682 if (!error) {
4683 if (rules.n == 0) {
baae3d02 4684 error = modify_flows_add(ofproto, fm, req);
a8e547c1 4685 } else if (rules.n == 1) {
baae3d02 4686 error = modify_flows__(ofproto, fm, &rules, req);
a8e547c1 4687 }
623e1caf 4688 }
a8e547c1
BP
4689
4690 rule_collection_destroy(&rules);
4691
4692 return error;
79eee1eb 4693}
9ed18e46
BP
4694\f
4695/* OFPFC_DELETE implementation. */
79eee1eb 4696
9ca4a86f 4697/* Deletes the rules listed in 'rules'. */
254750ce 4698static void
9ca4a86f 4699delete_flows__(const struct rule_collection *rules,
baae3d02
BP
4700 enum ofp_flow_removed_reason reason,
4701 const struct flow_mod_requester *req)
15aaf599 4702 OVS_REQUIRES(ofproto_mutex)
064af421 4703{
9ca4a86f 4704 if (rules->n) {
55951e15 4705 struct ovs_list dead_cookies = OVS_LIST_INITIALIZER(&dead_cookies);
9ca4a86f 4706 struct ofproto *ofproto = rules->rules[0]->ofproto;
802f84ff 4707 struct rule *rule, *next;
9ca4a86f 4708 size_t i;
79eee1eb 4709
802f84ff
JR
4710 for (i = 0, next = rules->rules[0];
4711 rule = next, next = (++i < rules->n) ? rules->rules[i] : NULL,
4712 rule; ) {
4713 struct classifier *cls = &ofproto->tables[rule->table_id].cls;
4714 uint8_t next_table = next ? next->table_id : UINT8_MAX;
79eee1eb 4715
9ca4a86f
BP
4716 ofproto_rule_send_removed(rule, reason);
4717
4718 ofmonitor_report(ofproto->connmgr, rule, NXFME_DELETED, reason,
cdbdeeda
SH
4719 req ? req->ofconn : NULL, req ? req->xid : 0,
4720 NULL);
802f84ff
JR
4721
4722 if (next_table == rule->table_id) {
4723 classifier_defer(cls);
4724 }
4725 classifier_remove(cls, &rule->cr);
4726 if (next_table != rule->table_id) {
4727 classifier_publish(cls);
4728 }
4729 ofproto_rule_remove__(ofproto, rule);
4730
9ca4a86f 4731 ofproto->ofproto_class->rule_delete(rule);
35f48b8b 4732
802f84ff
JR
4733 learned_cookies_dec(ofproto, rule_get_actions(rule),
4734 &dead_cookies);
401aa90e
JR
4735
4736 ofproto_rule_unref(rule);
9ca4a86f 4737 }
35f48b8b 4738 learned_cookies_flush(ofproto, &dead_cookies);
9ca4a86f
BP
4739 ofmonitor_flush(ofproto->connmgr);
4740 }
79eee1eb 4741}
79eee1eb
BP
4742
4743/* Implements OFPFC_DELETE. */
90bf1e07 4744static enum ofperr
baae3d02 4745delete_flows_loose(struct ofproto *ofproto,
7024dffe 4746 const struct ofputil_flow_mod *fm,
baae3d02 4747 const struct flow_mod_requester *req)
15aaf599 4748 OVS_REQUIRES(ofproto_mutex)
79eee1eb 4749{
a9b22b7f 4750 struct rule_criteria criteria;
a8e547c1 4751 struct rule_collection rules;
90bf1e07 4752 enum ofperr error;
064af421 4753
a9b22b7f
BP
4754 rule_criteria_init(&criteria, fm->table_id, &fm->match, 0,
4755 fm->cookie, fm->cookie_mask,
4756 fm->out_port, fm->out_group);
dd51dae2
BP
4757 rule_criteria_require_rw(&criteria,
4758 (fm->flags & OFPUTIL_FF_NO_READONLY) != 0);
a9b22b7f
BP
4759 error = collect_rules_loose(ofproto, &criteria, &rules);
4760 rule_criteria_destroy(&criteria);
4761
802f84ff 4762 if (!error) {
9ca4a86f 4763 delete_flows__(&rules, fm->delete_reason, req);
a8e547c1
BP
4764 }
4765 rule_collection_destroy(&rules);
4766
4767 return error;
064af421
BP
4768}
4769
79eee1eb 4770/* Implements OFPFC_DELETE_STRICT. */
90bf1e07 4771static enum ofperr
baae3d02
BP
4772delete_flow_strict(struct ofproto *ofproto, const struct ofputil_flow_mod *fm,
4773 const struct flow_mod_requester *req)
15aaf599 4774 OVS_REQUIRES(ofproto_mutex)
79eee1eb 4775{
a9b22b7f 4776 struct rule_criteria criteria;
a8e547c1 4777 struct rule_collection rules;
90bf1e07 4778 enum ofperr error;
79eee1eb 4779
a9b22b7f
BP
4780 rule_criteria_init(&criteria, fm->table_id, &fm->match, fm->priority,
4781 fm->cookie, fm->cookie_mask,
4782 fm->out_port, fm->out_group);
dd51dae2
BP
4783 rule_criteria_require_rw(&criteria,
4784 (fm->flags & OFPUTIL_FF_NO_READONLY) != 0);
a9b22b7f
BP
4785 error = collect_rules_strict(ofproto, &criteria, &rules);
4786 rule_criteria_destroy(&criteria);
4787
802f84ff 4788 if (!error) {
9ca4a86f 4789 delete_flows__(&rules, fm->delete_reason, req);
a8e547c1
BP
4790 }
4791 rule_collection_destroy(&rules);
4792
4793 return error;
abe529af
BP
4794}
4795
4796static void
4797ofproto_rule_send_removed(struct rule *rule, uint8_t reason)
15aaf599 4798 OVS_REQUIRES(ofproto_mutex)
abe529af
BP
4799{
4800 struct ofputil_flow_removed fr;
dc437090 4801 long long int used;
abe529af 4802
834fe5cb
BP
4803 if (rule_is_hidden(rule) ||
4804 !(rule->flags & OFPUTIL_FF_SEND_FLOW_REM)) {
abe529af
BP
4805 return;
4806 }
4807
5cb7a798 4808 minimatch_expand(&rule->cr.match, &fr.match);
81a76618 4809 fr.priority = rule->cr.priority;
abe529af
BP
4810 fr.cookie = rule->flow_cookie;
4811 fr.reason = reason;
95216219 4812 fr.table_id = rule->table_id;
65e0be10
BP
4813 calc_duration(rule->created, time_msec(),
4814 &fr.duration_sec, &fr.duration_nsec);
d10976b7 4815 ovs_mutex_lock(&rule->mutex);
abe529af 4816 fr.idle_timeout = rule->idle_timeout;
fa2bad0f 4817 fr.hard_timeout = rule->hard_timeout;
d10976b7 4818 ovs_mutex_unlock(&rule->mutex);
abe529af 4819 rule->ofproto->ofproto_class->rule_get_stats(rule, &fr.packet_count,
dc437090 4820 &fr.byte_count, &used);
abe529af
BP
4821
4822 connmgr_send_flow_removed(rule->ofproto->connmgr, &fr);
4823}
4824
4825/* Sends an OpenFlow "flow removed" message with the given 'reason' (either
4826 * OFPRR_HARD_TIMEOUT or OFPRR_IDLE_TIMEOUT), and then removes 'rule' from its
4827 * ofproto.
4828 *
4829 * ofproto implementation ->run() functions should use this function to expire
4830 * OpenFlow flows. */
4831void
4832ofproto_rule_expire(struct rule *rule, uint8_t reason)
15aaf599 4833 OVS_REQUIRES(ofproto_mutex)
abe529af 4834{
802f84ff
JR
4835 struct rule_collection rules;
4836
4837 rules.rules = rules.stub;
4838 rules.n = 1;
4839 rules.stub[0] = rule;
4840 delete_flows__(&rules, reason, NULL);
79eee1eb 4841}
994c9973
BP
4842
4843/* Reduces '*timeout' to no more than 'max'. A value of zero in either case
4844 * means "infinite". */
4845static void
4846reduce_timeout(uint16_t max, uint16_t *timeout)
4847{
4848 if (max && (!*timeout || *timeout > max)) {
4849 *timeout = max;
4850 }
4851}
4852
4853/* If 'idle_timeout' is nonzero, and 'rule' has no idle timeout or an idle
4854 * timeout greater than 'idle_timeout', lowers 'rule''s idle timeout to
4855 * 'idle_timeout' seconds. Similarly for 'hard_timeout'.
4856 *
4857 * Suitable for implementing OFPACT_FIN_TIMEOUT. */
4858void
4859ofproto_rule_reduce_timeouts(struct rule *rule,
4860 uint16_t idle_timeout, uint16_t hard_timeout)
d10976b7 4861 OVS_EXCLUDED(ofproto_mutex, rule->mutex)
994c9973
BP
4862{
4863 if (!idle_timeout && !hard_timeout) {
4864 return;
4865 }
4866
abe7b10f 4867 ovs_mutex_lock(&ofproto_mutex);
994c9973
BP
4868 if (list_is_empty(&rule->expirable)) {
4869 list_insert(&rule->ofproto->expirable, &rule->expirable);
4870 }
abe7b10f 4871 ovs_mutex_unlock(&ofproto_mutex);
994c9973 4872
d10976b7 4873 ovs_mutex_lock(&rule->mutex);
994c9973
BP
4874 reduce_timeout(idle_timeout, &rule->idle_timeout);
4875 reduce_timeout(hard_timeout, &rule->hard_timeout);
d10976b7 4876 ovs_mutex_unlock(&rule->mutex);
994c9973 4877}
79eee1eb 4878\f
90bf1e07 4879static enum ofperr
2e4f5fcf 4880handle_flow_mod(struct ofconn *ofconn, const struct ofp_header *oh)
15aaf599 4881 OVS_EXCLUDED(ofproto_mutex)
064af421 4882{
a5b8d268 4883 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
a9a2da38 4884 struct ofputil_flow_mod fm;
f25d0cf3
BP
4885 uint64_t ofpacts_stub[1024 / 8];
4886 struct ofpbuf ofpacts;
90bf1e07 4887 enum ofperr error;
064af421 4888
76589937 4889 error = reject_slave_controller(ofconn);
9deba63b 4890 if (error) {
f25d0cf3 4891 goto exit;
9deba63b 4892 }
3052b0c5 4893
f25d0cf3
BP
4894 ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub);
4895 error = ofputil_decode_flow_mod(&fm, oh, ofconn_get_protocol(ofconn),
7e9f8266
BP
4896 &ofpacts,
4897 u16_to_ofp(ofproto->max_ports),
4898 ofproto->n_tables);
4899 if (!error) {
4900 error = ofproto_check_ofpacts(ofproto, fm.ofpacts, fm.ofpacts_len);
4901 }
548de4dd 4902 if (!error) {
baae3d02
BP
4903 struct flow_mod_requester req;
4904
4905 req.ofconn = ofconn;
834fe5cb 4906 req.xid = oh->xid;
baae3d02 4907 error = handle_flow_mod__(ofproto, &fm, &req);
49bdc010 4908 }
a5b8d268 4909 if (error) {
f25d0cf3 4910 goto exit_free_ofpacts;
a5b8d268 4911 }
2e310801 4912
696d1bcf 4913 ofconn_report_flow_mod(ofconn, fm.command);
a5b8d268 4914
f25d0cf3
BP
4915exit_free_ofpacts:
4916 ofpbuf_uninit(&ofpacts);
4917exit:
4918 return error;
75a75043
BP
4919}
4920
90bf1e07 4921static enum ofperr
baae3d02
BP
4922handle_flow_mod__(struct ofproto *ofproto, struct ofputil_flow_mod *fm,
4923 const struct flow_mod_requester *req)
15aaf599 4924 OVS_EXCLUDED(ofproto_mutex)
75a75043 4925{
35412852 4926 enum ofperr error;
75a75043 4927
15aaf599 4928 ovs_mutex_lock(&ofproto_mutex);
baae3d02
BP
4929 switch (fm->command) {
4930 case OFPFC_ADD:
4931 error = add_flow(ofproto, fm, req);
4932 break;
3052b0c5 4933
baae3d02
BP
4934 case OFPFC_MODIFY:
4935 error = modify_flows_loose(ofproto, fm, req);
4936 break;
3052b0c5 4937
baae3d02
BP
4938 case OFPFC_MODIFY_STRICT:
4939 error = modify_flow_strict(ofproto, fm, req);
4940 break;
3052b0c5 4941
baae3d02
BP
4942 case OFPFC_DELETE:
4943 error = delete_flows_loose(ofproto, fm, req);
4944 break;
3052b0c5 4945
baae3d02
BP
4946 case OFPFC_DELETE_STRICT:
4947 error = delete_flow_strict(ofproto, fm, req);
4948 break;
3052b0c5 4949
baae3d02
BP
4950 default:
4951 if (fm->command > 0xff) {
4952 VLOG_WARN_RL(&rl, "%s: flow_mod has explicit table_id but "
4953 "flow_mod_table_id extension is not enabled",
4954 ofproto->name);
6c1491fb 4955 }
baae3d02
BP
4956 error = OFPERR_OFPFMFC_BAD_COMMAND;
4957 break;
3052b0c5 4958 }
baae3d02 4959 ofmonitor_flush(ofproto->connmgr);
15aaf599 4960 ovs_mutex_unlock(&ofproto_mutex);
35412852
BP
4961
4962 run_rule_executes(ofproto);
4963 return error;
3052b0c5
BP
4964}
4965
90bf1e07 4966static enum ofperr
d1e2cf21 4967handle_role_request(struct ofconn *ofconn, const struct ofp_header *oh)
9deba63b 4968{
f4f1ea7e
BP
4969 struct ofputil_role_request request;
4970 struct ofputil_role_request reply;
9deba63b 4971 struct ofpbuf *buf;
6ea4776b
JR
4972 enum ofperr error;
4973
f4f1ea7e 4974 error = ofputil_decode_role_message(oh, &request);
6ea4776b
JR
4975 if (error) {
4976 return error;
4977 }
9deba63b 4978
f4f1ea7e 4979 if (request.role != OFPCR12_ROLE_NOCHANGE) {
f4f1ea7e
BP
4980 if (request.have_generation_id
4981 && !ofconn_set_master_election_id(ofconn, request.generation_id)) {
4982 return OFPERR_OFPRRFC_STALE;
6ea4776b 4983 }
6ea4776b 4984
f4f1ea7e
BP
4985 ofconn_set_role(ofconn, request.role);
4986 }
9deba63b 4987
f4f1ea7e 4988 reply.role = ofconn_get_role(ofconn);
147cc9d3
BP
4989 reply.have_generation_id = ofconn_get_master_election_id(
4990 ofconn, &reply.generation_id);
f4f1ea7e 4991 buf = ofputil_encode_role_reply(oh, &reply);
b0421aa2 4992 ofconn_send_reply(ofconn, buf);
9deba63b
BP
4993
4994 return 0;
4995}
4996
90bf1e07 4997static enum ofperr
6c1491fb
BP
4998handle_nxt_flow_mod_table_id(struct ofconn *ofconn,
4999 const struct ofp_header *oh)
5000{
982697a4 5001 const struct nx_flow_mod_table_id *msg = ofpmsg_body(oh);
27527aa0
BP
5002 enum ofputil_protocol cur, next;
5003
5004 cur = ofconn_get_protocol(ofconn);
5005 next = ofputil_protocol_set_tid(cur, msg->set != 0);
5006 ofconn_set_protocol(ofconn, next);
6c1491fb 5007
6c1491fb
BP
5008 return 0;
5009}
5010
90bf1e07 5011static enum ofperr
d1e2cf21 5012handle_nxt_set_flow_format(struct ofconn *ofconn, const struct ofp_header *oh)
09246b99 5013{
982697a4 5014 const struct nx_set_flow_format *msg = ofpmsg_body(oh);
27527aa0
BP
5015 enum ofputil_protocol cur, next;
5016 enum ofputil_protocol next_base;
09246b99 5017
27527aa0
BP
5018 next_base = ofputil_nx_flow_format_to_protocol(ntohl(msg->format));
5019 if (!next_base) {
90bf1e07 5020 return OFPERR_OFPBRC_EPERM;
09246b99 5021 }
7ee20df1 5022
27527aa0
BP
5023 cur = ofconn_get_protocol(ofconn);
5024 next = ofputil_protocol_set_base(cur, next_base);
27527aa0 5025 ofconn_set_protocol(ofconn, next);
b20f4073 5026
7ee20df1 5027 return 0;
09246b99
BP
5028}
5029
90bf1e07 5030static enum ofperr
54834960
EJ
5031handle_nxt_set_packet_in_format(struct ofconn *ofconn,
5032 const struct ofp_header *oh)
5033{
982697a4 5034 const struct nx_set_packet_in_format *msg = ofpmsg_body(oh);
54834960
EJ
5035 uint32_t format;
5036
54834960 5037 format = ntohl(msg->format);
a15f0eeb 5038 if (format != NXPIF_OPENFLOW10 && format != NXPIF_NXM) {
90bf1e07 5039 return OFPERR_OFPBRC_EPERM;
54834960
EJ
5040 }
5041
54834960
EJ
5042 ofconn_set_packet_in_format(ofconn, format);
5043 return 0;
5044}
5045
80d5aefd
BP
5046static enum ofperr
5047handle_nxt_set_async_config(struct ofconn *ofconn, const struct ofp_header *oh)
5048{
982697a4 5049 const struct nx_async_config *msg = ofpmsg_body(oh);
80d5aefd
BP
5050 uint32_t master[OAM_N_TYPES];
5051 uint32_t slave[OAM_N_TYPES];
5052
5053 master[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[0]);
5054 master[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[0]);
5055 master[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[0]);
5056
5057 slave[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[1]);
5058 slave[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[1]);
5059 slave[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[1]);
5060
5061 ofconn_set_async_config(ofconn, master, slave);
4550b647
MM
5062 if (ofconn_get_type(ofconn) == OFCONN_SERVICE &&
5063 !ofconn_get_miss_send_len(ofconn)) {
5064 ofconn_set_miss_send_len(ofconn, OFP_DEFAULT_MISS_SEND_LEN);
5065 }
80d5aefd
BP
5066
5067 return 0;
5068}
5069
c423b3b3
AC
5070static enum ofperr
5071handle_nxt_get_async_request(struct ofconn *ofconn, const struct ofp_header *oh)
5072{
5073 struct ofpbuf *buf;
5074 uint32_t master[OAM_N_TYPES];
5075 uint32_t slave[OAM_N_TYPES];
5076 struct nx_async_config *msg;
5077
5078 ofconn_get_async_config(ofconn, master, slave);
5079 buf = ofpraw_alloc_reply(OFPRAW_OFPT13_GET_ASYNC_REPLY, oh, 0);
5080 msg = ofpbuf_put_zeros(buf, sizeof *msg);
5081
5082 msg->packet_in_mask[0] = htonl(master[OAM_PACKET_IN]);
5083 msg->port_status_mask[0] = htonl(master[OAM_PORT_STATUS]);
5084 msg->flow_removed_mask[0] = htonl(master[OAM_FLOW_REMOVED]);
5085
5086 msg->packet_in_mask[1] = htonl(slave[OAM_PACKET_IN]);
5087 msg->port_status_mask[1] = htonl(slave[OAM_PORT_STATUS]);
5088 msg->flow_removed_mask[1] = htonl(slave[OAM_FLOW_REMOVED]);
5089
5090 ofconn_send_reply(ofconn, buf);
5091
5092 return 0;
5093}
5094
a7349929
BP
5095static enum ofperr
5096handle_nxt_set_controller_id(struct ofconn *ofconn,
5097 const struct ofp_header *oh)
5098{
982697a4 5099 const struct nx_controller_id *nci = ofpmsg_body(oh);
a7349929 5100
a7349929
BP
5101 if (!is_all_zeros(nci->zero, sizeof nci->zero)) {
5102 return OFPERR_NXBRC_MUST_BE_ZERO;
5103 }
5104
5105 ofconn_set_controller_id(ofconn, ntohs(nci->controller_id));
5106 return 0;
5107}
5108
90bf1e07 5109static enum ofperr
d1e2cf21 5110handle_barrier_request(struct ofconn *ofconn, const struct ofp_header *oh)
246e61ea 5111{
246e61ea
JP
5112 struct ofpbuf *buf;
5113
982697a4
BP
5114 buf = ofpraw_alloc_reply((oh->version == OFP10_VERSION
5115 ? OFPRAW_OFPT10_BARRIER_REPLY
5116 : OFPRAW_OFPT11_BARRIER_REPLY), oh, 0);
b0421aa2 5117 ofconn_send_reply(ofconn, buf);
246e61ea
JP
5118 return 0;
5119}
5120
2b07c8b1
BP
5121static void
5122ofproto_compose_flow_refresh_update(const struct rule *rule,
5123 enum nx_flow_monitor_flags flags,
ca6ba700 5124 struct ovs_list *msgs)
15aaf599 5125 OVS_REQUIRES(ofproto_mutex)
2b07c8b1 5126{
6f00e29b 5127 const struct rule_actions *actions;
2b07c8b1 5128 struct ofputil_flow_update fu;
5cb7a798 5129 struct match match;
2b07c8b1 5130
2b07c8b1
BP
5131 fu.event = (flags & (NXFMF_INITIAL | NXFMF_ADD)
5132 ? NXFME_ADDED : NXFME_MODIFIED);
5133 fu.reason = 0;
d10976b7 5134 ovs_mutex_lock(&rule->mutex);
2b07c8b1
BP
5135 fu.idle_timeout = rule->idle_timeout;
5136 fu.hard_timeout = rule->hard_timeout;
d10976b7 5137 ovs_mutex_unlock(&rule->mutex);
2b07c8b1
BP
5138 fu.table_id = rule->table_id;
5139 fu.cookie = rule->flow_cookie;
5cb7a798
BP
5140 minimatch_expand(&rule->cr.match, &match);
5141 fu.match = &match;
6b140a4e 5142 fu.priority = rule->cr.priority;
6f00e29b 5143
b20f4073 5144 actions = flags & NXFMF_ACTIONS ? rule_get_actions(rule) : NULL;
6f00e29b
BP
5145 fu.ofpacts = actions ? actions->ofpacts : NULL;
5146 fu.ofpacts_len = actions ? actions->ofpacts_len : 0;
2b07c8b1
BP
5147
5148 if (list_is_empty(msgs)) {
5149 ofputil_start_flow_update(msgs);
5150 }
5151 ofputil_append_flow_update(&fu, msgs);
5152}
5153
5154void
a8e547c1 5155ofmonitor_compose_refresh_updates(struct rule_collection *rules,
ca6ba700 5156 struct ovs_list *msgs)
15aaf599 5157 OVS_REQUIRES(ofproto_mutex)
2b07c8b1 5158{
a8e547c1 5159 size_t i;
2b07c8b1 5160
a8e547c1
BP
5161 for (i = 0; i < rules->n; i++) {
5162 struct rule *rule = rules->rules[i];
2b07c8b1
BP
5163 enum nx_flow_monitor_flags flags = rule->monitor_flags;
5164 rule->monitor_flags = 0;
5165
5166 ofproto_compose_flow_refresh_update(rule, flags, msgs);
5167 }
5168}
5169
5170static void
5171ofproto_collect_ofmonitor_refresh_rule(const struct ofmonitor *m,
5172 struct rule *rule, uint64_t seqno,
a8e547c1 5173 struct rule_collection *rules)
15aaf599 5174 OVS_REQUIRES(ofproto_mutex)
2b07c8b1
BP
5175{
5176 enum nx_flow_monitor_flags update;
5177
5e8b38b0 5178 if (rule_is_hidden(rule)) {
2b07c8b1
BP
5179 return;
5180 }
5181
b20f4073 5182 if (!ofproto_rule_has_out_port(rule, m->out_port)) {
2b07c8b1
BP
5183 return;
5184 }
5185
5186 if (seqno) {
5187 if (rule->add_seqno > seqno) {
5188 update = NXFMF_ADD | NXFMF_MODIFY;
5189 } else if (rule->modify_seqno > seqno) {
5190 update = NXFMF_MODIFY;
5191 } else {
5192 return;
5193 }
5194
5195 if (!(m->flags & update)) {
5196 return;
5197 }
5198 } else {
5199 update = NXFMF_INITIAL;
5200 }
5201
5202 if (!rule->monitor_flags) {
a8e547c1 5203 rule_collection_add(rules, rule);
2b07c8b1
BP
5204 }
5205 rule->monitor_flags |= update | (m->flags & NXFMF_ACTIONS);
5206}
5207
5208static void
5209ofproto_collect_ofmonitor_refresh_rules(const struct ofmonitor *m,
5210 uint64_t seqno,
a8e547c1 5211 struct rule_collection *rules)
15aaf599 5212 OVS_REQUIRES(ofproto_mutex)
2b07c8b1
BP
5213{
5214 const struct ofproto *ofproto = ofconn_get_ofproto(m->ofconn);
2b07c8b1 5215 const struct oftable *table;
81a76618 5216 struct cls_rule target;
2b07c8b1 5217
5cb7a798 5218 cls_rule_init_from_minimatch(&target, &m->match, 0);
2b07c8b1 5219 FOR_EACH_MATCHING_TABLE (table, m->table_id, ofproto) {
2b07c8b1
BP
5220 struct rule *rule;
5221
5f0476ce 5222 CLS_FOR_EACH_TARGET (rule, cr, &table->cls, &target) {
2b07c8b1
BP
5223 ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules);
5224 }
5225 }
48d28ac1 5226 cls_rule_destroy(&target);
2b07c8b1
BP
5227}
5228
5229static void
5230ofproto_collect_ofmonitor_initial_rules(struct ofmonitor *m,
a8e547c1 5231 struct rule_collection *rules)
15aaf599 5232 OVS_REQUIRES(ofproto_mutex)
2b07c8b1
BP
5233{
5234 if (m->flags & NXFMF_INITIAL) {
5235 ofproto_collect_ofmonitor_refresh_rules(m, 0, rules);
5236 }
5237}
5238
5239void
5240ofmonitor_collect_resume_rules(struct ofmonitor *m,
a8e547c1 5241 uint64_t seqno, struct rule_collection *rules)
15aaf599 5242 OVS_REQUIRES(ofproto_mutex)
2b07c8b1
BP
5243{
5244 ofproto_collect_ofmonitor_refresh_rules(m, seqno, rules);
5245}
5246
7b900689
SH
5247static enum ofperr
5248flow_monitor_delete(struct ofconn *ofconn, uint32_t id)
5249 OVS_REQUIRES(ofproto_mutex)
5250{
5251 struct ofmonitor *m;
5252 enum ofperr error;
5253
5254 m = ofmonitor_lookup(ofconn, id);
5255 if (m) {
5256 ofmonitor_destroy(m);
5257 error = 0;
5258 } else {
5259 error = OFPERR_OFPMOFC_UNKNOWN_MONITOR;
5260 }
5261
5262 return error;
5263}
5264
2b07c8b1 5265static enum ofperr
982697a4 5266handle_flow_monitor_request(struct ofconn *ofconn, const struct ofp_header *oh)
15aaf599 5267 OVS_EXCLUDED(ofproto_mutex)
2b07c8b1
BP
5268{
5269 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5270 struct ofmonitor **monitors;
5271 size_t n_monitors, allocated_monitors;
a8e547c1 5272 struct rule_collection rules;
ca6ba700 5273 struct ovs_list replies;
2b07c8b1 5274 enum ofperr error;
2b07c8b1
BP
5275 struct ofpbuf b;
5276 size_t i;
5277
982697a4 5278 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2b07c8b1
BP
5279 monitors = NULL;
5280 n_monitors = allocated_monitors = 0;
15aaf599
BP
5281
5282 ovs_mutex_lock(&ofproto_mutex);
2b07c8b1
BP
5283 for (;;) {
5284 struct ofputil_flow_monitor_request request;
5285 struct ofmonitor *m;
5286 int retval;
5287
5288 retval = ofputil_decode_flow_monitor_request(&request, &b);
5289 if (retval == EOF) {
5290 break;
5291 } else if (retval) {
5292 error = retval;
5293 goto error;
5294 }
5295
5296 if (request.table_id != 0xff
5297 && request.table_id >= ofproto->n_tables) {
5298 error = OFPERR_OFPBRC_BAD_TABLE_ID;
5299 goto error;
5300 }
5301
5302 error = ofmonitor_create(&request, ofconn, &m);
5303 if (error) {
5304 goto error;
5305 }
5306
5307 if (n_monitors >= allocated_monitors) {
5308 monitors = x2nrealloc(monitors, &allocated_monitors,
5309 sizeof *monitors);
5310 }
5311 monitors[n_monitors++] = m;
5312 }
5313
a8e547c1 5314 rule_collection_init(&rules);
2b07c8b1
BP
5315 for (i = 0; i < n_monitors; i++) {
5316 ofproto_collect_ofmonitor_initial_rules(monitors[i], &rules);
5317 }
5318
982697a4 5319 ofpmp_init(&replies, oh);
2b07c8b1 5320 ofmonitor_compose_refresh_updates(&rules, &replies);
15aaf599
BP
5321 ovs_mutex_unlock(&ofproto_mutex);
5322
a8e547c1
BP
5323 rule_collection_destroy(&rules);
5324
2b07c8b1 5325 ofconn_send_replies(ofconn, &replies);
2b07c8b1
BP
5326 free(monitors);
5327
5328 return 0;
5329
5330error:
5331 for (i = 0; i < n_monitors; i++) {
5332 ofmonitor_destroy(monitors[i]);
5333 }
5334 free(monitors);
4cd1bc9d
BP
5335 ovs_mutex_unlock(&ofproto_mutex);
5336
2b07c8b1
BP
5337 return error;
5338}
5339
5340static enum ofperr
5341handle_flow_monitor_cancel(struct ofconn *ofconn, const struct ofp_header *oh)
15aaf599 5342 OVS_EXCLUDED(ofproto_mutex)
2b07c8b1 5343{
15aaf599 5344 enum ofperr error;
2b07c8b1
BP
5345 uint32_t id;
5346
5347 id = ofputil_decode_flow_monitor_cancel(oh);
15aaf599
BP
5348
5349 ovs_mutex_lock(&ofproto_mutex);
7b900689 5350 error = flow_monitor_delete(ofconn, id);
15aaf599 5351 ovs_mutex_unlock(&ofproto_mutex);
2b07c8b1 5352
15aaf599 5353 return error;
2b07c8b1
BP
5354}
5355
9cae45dc
JR
5356/* Meters implementation.
5357 *
5358 * Meter table entry, indexed by the OpenFlow meter_id.
9cae45dc
JR
5359 * 'created' is used to compute the duration for meter stats.
5360 * 'list rules' is needed so that we can delete the dependent rules when the
5361 * meter table entry is deleted.
5362 * 'provider_meter_id' is for the provider's private use.
5363 */
5364struct meter {
5365 long long int created; /* Time created. */
ca6ba700 5366 struct ovs_list rules; /* List of "struct rule_dpif"s. */
9cae45dc
JR
5367 ofproto_meter_id provider_meter_id;
5368 uint16_t flags; /* Meter flags. */
5369 uint16_t n_bands; /* Number of meter bands. */
5370 struct ofputil_meter_band *bands;
5371};
5372
5373/*
5374 * This is used in instruction validation at flow set-up time,
5375 * as flows may not use non-existing meters.
9cae45dc
JR
5376 * Return value of UINT32_MAX signifies an invalid meter.
5377 */
65efd2ab
JR
5378static uint32_t
5379get_provider_meter_id(const struct ofproto *ofproto, uint32_t of_meter_id)
9cae45dc
JR
5380{
5381 if (of_meter_id && of_meter_id <= ofproto->meter_features.max_meters) {
5382 const struct meter *meter = ofproto->meters[of_meter_id];
5383 if (meter) {
5384 return meter->provider_meter_id.uint32;
5385 }
5386 }
5387 return UINT32_MAX;
5388}
5389
062fea06
BP
5390/* Finds the meter invoked by 'rule''s actions and adds 'rule' to the meter's
5391 * list of rules. */
5392static void
5393meter_insert_rule(struct rule *rule)
5394{
5395 const struct rule_actions *a = rule_get_actions(rule);
5396 uint32_t meter_id = ofpacts_get_meter(a->ofpacts, a->ofpacts_len);
5397 struct meter *meter = rule->ofproto->meters[meter_id];
5398
5399 list_insert(&meter->rules, &rule->meter_list_node);
5400}
5401
9cae45dc
JR
5402static void
5403meter_update(struct meter *meter, const struct ofputil_meter_config *config)
5404{
5405 free(meter->bands);
5406
5407 meter->flags = config->flags;
5408 meter->n_bands = config->n_bands;
5409 meter->bands = xmemdup(config->bands,
5410 config->n_bands * sizeof *meter->bands);
5411}
5412
5413static struct meter *
5414meter_create(const struct ofputil_meter_config *config,
5415 ofproto_meter_id provider_meter_id)
5416{
5417 struct meter *meter;
5418
5419 meter = xzalloc(sizeof *meter);
5420 meter->provider_meter_id = provider_meter_id;
5421 meter->created = time_msec();
5422 list_init(&meter->rules);
5423
5424 meter_update(meter, config);
5425
5426 return meter;
5427}
5428
6b3f7f02
JR
5429static void
5430meter_delete(struct ofproto *ofproto, uint32_t first, uint32_t last)
15aaf599 5431 OVS_REQUIRES(ofproto_mutex)
6b3f7f02
JR
5432{
5433 uint32_t mid;
5434 for (mid = first; mid <= last; ++mid) {
5435 struct meter *meter = ofproto->meters[mid];
5436 if (meter) {
5437 ofproto->meters[mid] = NULL;
5438 ofproto->ofproto_class->meter_del(ofproto,
5439 meter->provider_meter_id);
5440 free(meter->bands);
5441 free(meter);
5442 }
5443 }
5444}
5445
9cae45dc
JR
5446static enum ofperr
5447handle_add_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm)
5448{
5449 ofproto_meter_id provider_meter_id = { UINT32_MAX };
5450 struct meter **meterp = &ofproto->meters[mm->meter.meter_id];
5451 enum ofperr error;
5452
5453 if (*meterp) {
5454 return OFPERR_OFPMMFC_METER_EXISTS;
5455 }
5456
5457 error = ofproto->ofproto_class->meter_set(ofproto, &provider_meter_id,
5458 &mm->meter);
5459 if (!error) {
5460 ovs_assert(provider_meter_id.uint32 != UINT32_MAX);
5461 *meterp = meter_create(&mm->meter, provider_meter_id);
5462 }
f0f8c6c2 5463 return error;
9cae45dc
JR
5464}
5465
5466static enum ofperr
5467handle_modify_meter(struct ofproto *ofproto, struct ofputil_meter_mod *mm)
5468{
5469 struct meter *meter = ofproto->meters[mm->meter.meter_id];
5470 enum ofperr error;
e555eb7c 5471 uint32_t provider_meter_id;
9cae45dc
JR
5472
5473 if (!meter) {
5474 return OFPERR_OFPMMFC_UNKNOWN_METER;
5475 }
5476
e555eb7c 5477 provider_meter_id = meter->provider_meter_id.uint32;
9cae45dc
JR
5478 error = ofproto->ofproto_class->meter_set(ofproto,
5479 &meter->provider_meter_id,
5480 &mm->meter);
e555eb7c 5481 ovs_assert(meter->provider_meter_id.uint32 == provider_meter_id);
9cae45dc
JR
5482 if (!error) {
5483 meter_update(meter, &mm->meter);
5484 }
5485 return error;
5486}
5487
5488static enum ofperr
baae3d02 5489handle_delete_meter(struct ofconn *ofconn, struct ofputil_meter_mod *mm)
15aaf599 5490 OVS_EXCLUDED(ofproto_mutex)
9cae45dc
JR
5491{
5492 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5493 uint32_t meter_id = mm->meter.meter_id;
a8e547c1
BP
5494 struct rule_collection rules;
5495 enum ofperr error = 0;
9cae45dc 5496 uint32_t first, last;
9cae45dc
JR
5497
5498 if (meter_id == OFPM13_ALL) {
5499 first = 1;
5500 last = ofproto->meter_features.max_meters;
5501 } else {
5502 if (!meter_id || meter_id > ofproto->meter_features.max_meters) {
5503 return 0;
5504 }
5505 first = last = meter_id;
5506 }
5507
5508 /* First delete the rules that use this meter. If any of those rules are
5509 * currently being modified, postpone the whole operation until later. */
a8e547c1 5510 rule_collection_init(&rules);
15aaf599 5511 ovs_mutex_lock(&ofproto_mutex);
9cae45dc
JR
5512 for (meter_id = first; meter_id <= last; ++meter_id) {
5513 struct meter *meter = ofproto->meters[meter_id];
5514 if (meter && !list_is_empty(&meter->rules)) {
5515 struct rule *rule;
5516
5517 LIST_FOR_EACH (rule, meter_list_node, &meter->rules) {
a8e547c1 5518 rule_collection_add(&rules, rule);
9cae45dc
JR
5519 }
5520 }
5521 }
802f84ff 5522 delete_flows__(&rules, OFPRR_METER_DELETE, NULL);
9cae45dc
JR
5523
5524 /* Delete the meters. */
6b3f7f02 5525 meter_delete(ofproto, first, last);
9cae45dc 5526
15aaf599 5527 ovs_mutex_unlock(&ofproto_mutex);
a8e547c1
BP
5528 rule_collection_destroy(&rules);
5529
5530 return error;
9cae45dc
JR
5531}
5532
5533static enum ofperr
5534handle_meter_mod(struct ofconn *ofconn, const struct ofp_header *oh)
5535{
5536 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5537 struct ofputil_meter_mod mm;
5538 uint64_t bands_stub[256 / 8];
5539 struct ofpbuf bands;
5540 uint32_t meter_id;
5541 enum ofperr error;
5542
5543 error = reject_slave_controller(ofconn);
5544 if (error) {
5545 return error;
5546 }
5547
5548 ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub);
5549
5550 error = ofputil_decode_meter_mod(oh, &mm, &bands);
5551 if (error) {
5552 goto exit_free_bands;
5553 }
5554
5555 meter_id = mm.meter.meter_id;
5556
5557 if (mm.command != OFPMC13_DELETE) {
5558 /* Fails also when meters are not implemented by the provider. */
b31e8700 5559 if (meter_id == 0 || meter_id > OFPM13_MAX) {
9cae45dc
JR
5560 error = OFPERR_OFPMMFC_INVALID_METER;
5561 goto exit_free_bands;
b31e8700
JR
5562 } else if (meter_id > ofproto->meter_features.max_meters) {
5563 error = OFPERR_OFPMMFC_OUT_OF_METERS;
5564 goto exit_free_bands;
9cae45dc
JR
5565 }
5566 if (mm.meter.n_bands > ofproto->meter_features.max_bands) {
5567 error = OFPERR_OFPMMFC_OUT_OF_BANDS;
5568 goto exit_free_bands;
5569 }
5570 }
5571
5572 switch (mm.command) {
5573 case OFPMC13_ADD:
5574 error = handle_add_meter(ofproto, &mm);
5575 break;
5576
5577 case OFPMC13_MODIFY:
5578 error = handle_modify_meter(ofproto, &mm);
5579 break;
5580
5581 case OFPMC13_DELETE:
baae3d02 5582 error = handle_delete_meter(ofconn, &mm);
9cae45dc
JR
5583 break;
5584
5585 default:
5586 error = OFPERR_OFPMMFC_BAD_COMMAND;
5587 break;
5588 }
5589
5590exit_free_bands:
5591 ofpbuf_uninit(&bands);
5592 return error;
5593}
5594
5595static enum ofperr
5596handle_meter_features_request(struct ofconn *ofconn,
5597 const struct ofp_header *request)
5598{
5599 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
5600 struct ofputil_meter_features features;
5601 struct ofpbuf *b;
5602
5603 if (ofproto->ofproto_class->meter_get_features) {
5604 ofproto->ofproto_class->meter_get_features(ofproto, &features);
5605 } else {
5606 memset(&features, 0, sizeof features);
5607 }
5608 b = ofputil_encode_meter_features_reply(&features, request);
5609
5610 ofconn_send_reply(ofconn, b);
5611 return 0;
5612}
5613
5614static enum ofperr
5615handle_meter_request(struct ofconn *ofconn, const struct ofp_header *request,
5616 enum ofptype type)
5617{
5618 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
ca6ba700 5619 struct ovs_list replies;
9cae45dc
JR
5620 uint64_t bands_stub[256 / 8];
5621 struct ofpbuf bands;
5622 uint32_t meter_id, first, last;
5623
5624 ofputil_decode_meter_request(request, &meter_id);
5625
5626 if (meter_id == OFPM13_ALL) {
5627 first = 1;
5628 last = ofproto->meter_features.max_meters;
5629 } else {
5630 if (!meter_id || meter_id > ofproto->meter_features.max_meters ||
5631 !ofproto->meters[meter_id]) {
5632 return OFPERR_OFPMMFC_UNKNOWN_METER;
5633 }
5634 first = last = meter_id;
5635 }
5636
5637 ofpbuf_use_stub(&bands, bands_stub, sizeof bands_stub);
5638 ofpmp_init(&replies, request);
5639
5640 for (meter_id = first; meter_id <= last; ++meter_id) {
5641 struct meter *meter = ofproto->meters[meter_id];
5642 if (!meter) {
5643 continue; /* Skip non-existing meters. */
5644 }
261bd854 5645 if (type == OFPTYPE_METER_STATS_REQUEST) {
9cae45dc
JR
5646 struct ofputil_meter_stats stats;
5647
5648 stats.meter_id = meter_id;
5649
5650 /* Provider sets the packet and byte counts, we do the rest. */
5651 stats.flow_count = list_size(&meter->rules);
5652 calc_duration(meter->created, time_msec(),
5653 &stats.duration_sec, &stats.duration_nsec);
5654 stats.n_bands = meter->n_bands;
5655 ofpbuf_clear(&bands);
5656 stats.bands
5657 = ofpbuf_put_uninit(&bands,
5658 meter->n_bands * sizeof *stats.bands);
5659
5660 if (!ofproto->ofproto_class->meter_get(ofproto,
5661 meter->provider_meter_id,
5662 &stats)) {
5663 ofputil_append_meter_stats(&replies, &stats);
5664 }
5665 } else { /* type == OFPTYPE_METER_CONFIG_REQUEST */
5666 struct ofputil_meter_config config;
5667
5668 config.meter_id = meter_id;
5669 config.flags = meter->flags;
5670 config.n_bands = meter->n_bands;
5671 config.bands = meter->bands;
5672 ofputil_append_meter_config(&replies, &config);
5673 }
5674 }
5675
5676 ofconn_send_replies(ofconn, &replies);
5677 ofpbuf_uninit(&bands);
5678 return 0;
5679}
5680
3fc3b679
AZ
5681static bool
5682ofproto_group_lookup__(const struct ofproto *ofproto, uint32_t group_id,
5683 struct ofgroup **group)
5684 OVS_REQ_RDLOCK(ofproto->groups_rwlock)
7395c052 5685{
7395c052
NZ
5686 HMAP_FOR_EACH_IN_BUCKET (*group, hmap_node,
5687 hash_int(group_id, 0), &ofproto->groups) {
5688 if ((*group)->group_id == group_id) {
7395c052
NZ
5689 return true;
5690 }
5691 }
3fc3b679 5692
7395c052
NZ
5693 return false;
5694}
5695
3fc3b679
AZ
5696/* If the group exists, this function increments the groups's reference count.
5697 *
5698 * Make sure to call ofproto_group_unref() after no longer needing to maintain
5699 * a reference to the group. */
5700bool
5701ofproto_group_lookup(const struct ofproto *ofproto, uint32_t group_id,
5702 struct ofgroup **group)
7395c052 5703{
3fc3b679
AZ
5704 bool found;
5705
5706 ovs_rwlock_rdlock(&ofproto->groups_rwlock);
5707 found = ofproto_group_lookup__(ofproto, group_id, group);
5708 if (found) {
5709 ofproto_group_ref(*group);
7395c052 5710 }
3fc3b679
AZ
5711 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5712 return found;
7395c052
NZ
5713}
5714
5715static bool
7e9f8266 5716ofproto_group_exists__(const struct ofproto *ofproto, uint32_t group_id)
7395c052
NZ
5717 OVS_REQ_RDLOCK(ofproto->groups_rwlock)
5718{
5719 struct ofgroup *grp;
5720
5721 HMAP_FOR_EACH_IN_BUCKET (grp, hmap_node,
5722 hash_int(group_id, 0), &ofproto->groups) {
5723 if (grp->group_id == group_id) {
5724 return true;
5725 }
5726 }
5727 return false;
5728}
5729
7e9f8266
BP
5730static bool
5731ofproto_group_exists(const struct ofproto *ofproto, uint32_t group_id)
5732 OVS_EXCLUDED(ofproto->groups_rwlock)
5733{
5734 bool exists;
5735
5736 ovs_rwlock_rdlock(&ofproto->groups_rwlock);
5737 exists = ofproto_group_exists__(ofproto, group_id);
5738 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5739
5740 return exists;
5741}
5742
732feb93
SH
5743static uint32_t
5744group_get_ref_count(struct ofgroup *group)
5745 OVS_EXCLUDED(ofproto_mutex)
5746{
eaf004bd 5747 struct ofproto *ofproto = CONST_CAST(struct ofproto *, group->ofproto);
732feb93
SH
5748 struct rule_criteria criteria;
5749 struct rule_collection rules;
5750 struct match match;
5751 enum ofperr error;
5752 uint32_t count;
5753
5754 match_init_catchall(&match);
5755 rule_criteria_init(&criteria, 0xff, &match, 0, htonll(0), htonll(0),
5756 OFPP_ANY, group->group_id);
5757 ovs_mutex_lock(&ofproto_mutex);
5758 error = collect_rules_loose(ofproto, &criteria, &rules);
5759 ovs_mutex_unlock(&ofproto_mutex);
5760 rule_criteria_destroy(&criteria);
5761
5762 count = !error && rules.n < UINT32_MAX ? rules.n : UINT32_MAX;
5763
5764 rule_collection_destroy(&rules);
5765 return count;
5766}
5767
7395c052 5768static void
ca6ba700 5769append_group_stats(struct ofgroup *group, struct ovs_list *replies)
7395c052
NZ
5770{
5771 struct ofputil_group_stats ogs;
eaf004bd 5772 const struct ofproto *ofproto = group->ofproto;
7395c052
NZ
5773 long long int now = time_msec();
5774 int error;
5775
646b2a9c
SH
5776 ogs.bucket_stats = xmalloc(group->n_buckets * sizeof *ogs.bucket_stats);
5777
732feb93
SH
5778 /* Provider sets the packet and byte counts, we do the rest. */
5779 ogs.ref_count = group_get_ref_count(group);
5780 ogs.n_buckets = group->n_buckets;
5781
7395c052
NZ
5782 error = (ofproto->ofproto_class->group_get_stats
5783 ? ofproto->ofproto_class->group_get_stats(group, &ogs)
5784 : EOPNOTSUPP);
5785 if (error) {
7395c052
NZ
5786 ogs.packet_count = UINT64_MAX;
5787 ogs.byte_count = UINT64_MAX;
7395c052
NZ
5788 memset(ogs.bucket_stats, 0xff,
5789 ogs.n_buckets * sizeof *ogs.bucket_stats);
5790 }
5791
5792 ogs.group_id = group->group_id;
5793 calc_duration(group->created, now, &ogs.duration_sec, &ogs.duration_nsec);
5794
5795 ofputil_append_group_stats(replies, &ogs);
646b2a9c
SH
5796
5797 free(ogs.bucket_stats);
7395c052
NZ
5798}
5799
19187a71
BP
5800static void
5801handle_group_request(struct ofconn *ofconn,
5802 const struct ofp_header *request, uint32_t group_id,
ca6ba700 5803 void (*cb)(struct ofgroup *, struct ovs_list *replies))
7395c052
NZ
5804{
5805 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
7395c052 5806 struct ofgroup *group;
ca6ba700 5807 struct ovs_list replies;
7395c052
NZ
5808
5809 ofpmp_init(&replies, request);
7395c052
NZ
5810 if (group_id == OFPG_ALL) {
5811 ovs_rwlock_rdlock(&ofproto->groups_rwlock);
5812 HMAP_FOR_EACH (group, hmap_node, &ofproto->groups) {
19187a71 5813 cb(group, &replies);
7395c052
NZ
5814 }
5815 ovs_rwlock_unlock(&ofproto->groups_rwlock);
5816 } else {
5817 if (ofproto_group_lookup(ofproto, group_id, &group)) {
19187a71 5818 cb(group, &replies);
809c7548 5819 ofproto_group_unref(group);
7395c052
NZ
5820 }
5821 }
7395c052 5822 ofconn_send_replies(ofconn, &replies);
7395c052
NZ
5823}
5824
5825static enum ofperr
19187a71
BP
5826handle_group_stats_request(struct ofconn *ofconn,
5827 const struct ofp_header *request)
7395c052 5828{
19187a71
BP
5829 uint32_t group_id;
5830 enum ofperr error;
7395c052 5831
19187a71
BP
5832 error = ofputil_decode_group_stats_request(request, &group_id);
5833 if (error) {
5834 return error;
7395c052 5835 }
7395c052 5836
19187a71
BP
5837 handle_group_request(ofconn, request, group_id, append_group_stats);
5838 return 0;
5839}
5840
5841static void
ca6ba700 5842append_group_desc(struct ofgroup *group, struct ovs_list *replies)
19187a71
BP
5843{
5844 struct ofputil_group_desc gds;
7395c052 5845
19187a71
BP
5846 gds.group_id = group->group_id;
5847 gds.type = group->type;
53eb84a5
SH
5848 gds.props = group->props;
5849
19187a71
BP
5850 ofputil_append_group_desc_reply(&gds, &group->buckets, replies);
5851}
5852
5853static enum ofperr
5854handle_group_desc_stats_request(struct ofconn *ofconn,
5855 const struct ofp_header *request)
5856{
5857 handle_group_request(ofconn, request,
5858 ofputil_decode_group_desc_request(request),
5859 append_group_desc);
7395c052
NZ
5860 return 0;
5861}
5862
5863static enum ofperr
5864handle_group_features_stats_request(struct ofconn *ofconn,
5865 const struct ofp_header *request)
5866{
5867 struct ofproto *p = ofconn_get_ofproto(ofconn);
5868 struct ofpbuf *msg;
5869
5870 msg = ofputil_encode_group_features_reply(&p->ogf, request);
5871 if (msg) {
5872 ofconn_send_reply(ofconn, msg);
5873 }
5874
5875 return 0;
5876}
5877
e8f9a7bb
VG
5878static enum ofperr
5879handle_queue_get_config_request(struct ofconn *ofconn,
5880 const struct ofp_header *oh)
5881{
5882 struct ofproto *p = ofconn_get_ofproto(ofconn);
5883 struct netdev_queue_dump queue_dump;
5884 struct ofport *ofport;
5885 unsigned int queue_id;
5886 struct ofpbuf *reply;
5887 struct smap details;
5888 ofp_port_t request;
5889 enum ofperr error;
5890
5891 error = ofputil_decode_queue_get_config_request(oh, &request);
5892 if (error) {
5893 return error;
5894 }
5895
5896 ofport = ofproto_get_port(p, request);
5897 if (!ofport) {
5898 return OFPERR_OFPQOFC_BAD_PORT;
5899 }
5900
5901 reply = ofputil_encode_queue_get_config_reply(oh);
5902
5903 smap_init(&details);
5904 NETDEV_QUEUE_FOR_EACH (&queue_id, &details, &queue_dump, ofport->netdev) {
5905 struct ofputil_queue_config queue;
5906
5907 /* None of the existing queues have compatible properties, so we
5908 * hard-code omitting min_rate and max_rate. */
5909 queue.queue_id = queue_id;
5910 queue.min_rate = UINT16_MAX;
5911 queue.max_rate = UINT16_MAX;
5912 ofputil_append_queue_get_config_reply(reply, &queue);
5913 }
5914 smap_destroy(&details);
5915
5916 ofconn_send_reply(ofconn, reply);
5917
5918 return 0;
5919}
5920
809c7548
RW
5921static enum ofperr
5922init_group(struct ofproto *ofproto, struct ofputil_group_mod *gm,
5923 struct ofgroup **ofgroup)
5924{
5925 enum ofperr error;
eaf004bd 5926 const long long int now = time_msec();
809c7548
RW
5927
5928 if (gm->group_id > OFPG_MAX) {
5929 return OFPERR_OFPGMFC_INVALID_GROUP;
5930 }
5931 if (gm->type > OFPGT11_FF) {
5932 return OFPERR_OFPGMFC_BAD_TYPE;
5933 }
5934
5935 *ofgroup = ofproto->ofproto_class->group_alloc();
5936 if (!*ofgroup) {
5937 VLOG_WARN_RL(&rl, "%s: failed to allocate group", ofproto->name);
5938 return OFPERR_OFPGMFC_OUT_OF_GROUPS;
5939 }
5940
eaf004bd
AZ
5941 (*ofgroup)->ofproto = ofproto;
5942 *CONST_CAST(uint32_t *, &((*ofgroup)->group_id)) = gm->group_id;
5943 *CONST_CAST(enum ofp11_group_type *, &(*ofgroup)->type) = gm->type;
5944 *CONST_CAST(long long int *, &((*ofgroup)->created)) = now;
5945 *CONST_CAST(long long int *, &((*ofgroup)->modified)) = now;
809c7548
RW
5946 ovs_refcount_init(&(*ofgroup)->ref_count);
5947
5948 list_move(&(*ofgroup)->buckets, &gm->buckets);
eaf004bd
AZ
5949 *CONST_CAST(uint32_t *, &(*ofgroup)->n_buckets) =
5950 list_size(&(*ofgroup)->buckets);
809c7548 5951
bc65c25a
SH
5952 memcpy(CONST_CAST(struct ofputil_group_props *, &(*ofgroup)->props),
5953 &gm->props, sizeof (struct ofputil_group_props));
5954
809c7548
RW
5955 /* Construct called BEFORE any locks are held. */
5956 error = ofproto->ofproto_class->group_construct(*ofgroup);
5957 if (error) {
5958 ofputil_bucket_list_destroy(&(*ofgroup)->buckets);
5959 ofproto->ofproto_class->group_dealloc(*ofgroup);
5960 }
5961 return error;
5962}
5963
6c5b90ce
BP
5964/* Implements the OFPGC11_ADD operation specified by 'gm', adding a group to
5965 * 'ofproto''s group table. Returns 0 on success or an OpenFlow error code on
5966 * failure. */
7395c052
NZ
5967static enum ofperr
5968add_group(struct ofproto *ofproto, struct ofputil_group_mod *gm)
5969{
5970 struct ofgroup *ofgroup;
5971 enum ofperr error;
5972
7395c052 5973 /* Allocate new group and initialize it. */
809c7548 5974 error = init_group(ofproto, gm, &ofgroup);
7395c052 5975 if (error) {
809c7548 5976 return error;
7395c052
NZ
5977 }
5978
5979 /* We wrlock as late as possible to minimize the time we jam any other
5980 * threads: No visible state changes before acquiring the lock. */
5981 ovs_rwlock_wrlock(&ofproto->groups_rwlock);
5982
5983 if (ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) {
5984 error = OFPERR_OFPGMFC_OUT_OF_GROUPS;
5985 goto unlock_out;
5986 }
5987
7e9f8266 5988 if (ofproto_group_exists__(ofproto, gm->group_id)) {
7395c052
NZ
5989 error = OFPERR_OFPGMFC_GROUP_EXISTS;
5990 goto unlock_out;
5991 }
5992
5993 if (!error) {
5994 /* Insert new group. */
5995 hmap_insert(&ofproto->groups, &ofgroup->hmap_node,
5996 hash_int(ofgroup->group_id, 0));
5997 ofproto->n_groups[ofgroup->type]++;
5998
5999 ovs_rwlock_unlock(&ofproto->groups_rwlock);
6000 return error;
6001 }
6002
6003 unlock_out:
6004 ovs_rwlock_unlock(&ofproto->groups_rwlock);
6005 ofproto->ofproto_class->group_destruct(ofgroup);
7395c052
NZ
6006 ofputil_bucket_list_destroy(&ofgroup->buckets);
6007 ofproto->ofproto_class->group_dealloc(ofgroup);
6008
6009 return error;
6010}
6011
fce4730c
SH
6012/* Adds all of the buckets from 'ofgroup' to 'new_ofgroup'. The buckets
6013 * already in 'new_ofgroup' will be placed just after the (copy of the) bucket
6014 * in 'ofgroup' with bucket ID 'command_bucket_id'. Special
6015 * 'command_bucket_id' values OFPG15_BUCKET_FIRST and OFPG15_BUCKET_LAST are
6016 * also honored. */
6017static enum ofperr
6018copy_buckets_for_insert_bucket(const struct ofgroup *ofgroup,
6019 struct ofgroup *new_ofgroup,
6020 uint32_t command_bucket_id)
6021{
6022 struct ofputil_bucket *last = NULL;
6023
6024 if (command_bucket_id <= OFPG15_BUCKET_MAX) {
6025 /* Check here to ensure that a bucket corresponding to
6026 * command_bucket_id exists in the old bucket list.
6027 *
6028 * The subsequent search of below of new_ofgroup covers
6029 * both buckets in the old bucket list and buckets added
6030 * by the insert buckets group mod message this function processes. */
6031 if (!ofputil_bucket_find(&ofgroup->buckets, command_bucket_id)) {
6032 return OFPERR_OFPGMFC_UNKNOWN_BUCKET;
6033 }
6034
6035 if (!list_is_empty(&new_ofgroup->buckets)) {
6036 last = ofputil_bucket_list_back(&new_ofgroup->buckets);
6037 }
6038 }
6039
6040 ofputil_bucket_clone_list(&new_ofgroup->buckets, &ofgroup->buckets, NULL);
6041
6042 if (ofputil_bucket_check_duplicate_id(&ofgroup->buckets)) {
6043 VLOG_WARN_RL(&rl, "Duplicate bucket id");
6044 return OFPERR_OFPGMFC_BUCKET_EXISTS;
6045 }
6046
6047 /* Rearrange list according to command_bucket_id */
6048 if (command_bucket_id == OFPG15_BUCKET_LAST) {
6049 struct ofputil_bucket *new_first;
6050 const struct ofputil_bucket *first;
6051
6052 first = ofputil_bucket_list_front(&ofgroup->buckets);
6053 new_first = ofputil_bucket_find(&new_ofgroup->buckets,
6054 first->bucket_id);
6055
6056 list_splice(new_ofgroup->buckets.next, &new_first->list_node,
6057 &new_ofgroup->buckets);
6058 } else if (command_bucket_id <= OFPG15_BUCKET_MAX && last) {
6059 struct ofputil_bucket *after;
6060
6061 /* Presence of bucket is checked above so after should never be NULL */
6062 after = ofputil_bucket_find(&new_ofgroup->buckets, command_bucket_id);
6063
6064 list_splice(after->list_node.next, new_ofgroup->buckets.next,
6065 last->list_node.next);
6066 }
6067
6068 return 0;
6069}
6070
6071/* Appends all of the a copy of all the buckets from 'ofgroup' to 'new_ofgroup'
6072 * with the exception of the bucket whose bucket id is 'command_bucket_id'.
6073 * Special 'command_bucket_id' values OFPG15_BUCKET_FIRST, OFPG15_BUCKET_LAST
6074 * and OFPG15_BUCKET_ALL are also honored. */
6075static enum ofperr
6076copy_buckets_for_remove_bucket(const struct ofgroup *ofgroup,
6077 struct ofgroup *new_ofgroup,
6078 uint32_t command_bucket_id)
6079{
6080 const struct ofputil_bucket *skip = NULL;
6081
6082 if (command_bucket_id == OFPG15_BUCKET_ALL) {
6083 return 0;
6084 }
6085
6086 if (command_bucket_id == OFPG15_BUCKET_FIRST) {
6087 if (!list_is_empty(&ofgroup->buckets)) {
6088 skip = ofputil_bucket_list_front(&ofgroup->buckets);
6089 }
6090 } else if (command_bucket_id == OFPG15_BUCKET_LAST) {
6091 if (!list_is_empty(&ofgroup->buckets)) {
6092 skip = ofputil_bucket_list_back(&ofgroup->buckets);
6093 }
6094 } else {
6095 skip = ofputil_bucket_find(&ofgroup->buckets, command_bucket_id);
6096 if (!skip) {
6097 return OFPERR_OFPGMFC_UNKNOWN_BUCKET;
6098 }
6099 }
6100
6101 ofputil_bucket_clone_list(&new_ofgroup->buckets, &ofgroup->buckets, skip);
6102
6103 return 0;
6104}
6105
6106/* Implements OFPGC11_MODIFY, OFPGC15_INSERT_BUCKET and
6107 * OFPGC15_REMOVE_BUCKET. Returns 0 on success or an OpenFlow error code
6c5b90ce 6108 * on failure.
7395c052 6109 *
809c7548
RW
6110 * Note that the group is re-created and then replaces the old group in
6111 * ofproto's ofgroup hash map. Thus, the group is never altered while users of
6c5b90ce 6112 * the xlate module hold a pointer to the group. */
7395c052
NZ
6113static enum ofperr
6114modify_group(struct ofproto *ofproto, struct ofputil_group_mod *gm)
6115{
809c7548 6116 struct ofgroup *ofgroup, *new_ofgroup, *retiring;
7395c052
NZ
6117 enum ofperr error;
6118
809c7548
RW
6119 error = init_group(ofproto, gm, &new_ofgroup);
6120 if (error) {
6121 return error;
7395c052
NZ
6122 }
6123
809c7548 6124 retiring = new_ofgroup;
7395c052 6125
3fc3b679
AZ
6126 ovs_rwlock_wrlock(&ofproto->groups_rwlock);
6127 if (!ofproto_group_lookup__(ofproto, gm->group_id, &ofgroup)) {
7395c052 6128 error = OFPERR_OFPGMFC_UNKNOWN_GROUP;
809c7548 6129 goto out;
7395c052 6130 }
809c7548
RW
6131
6132 /* Ofproto's group write lock is held now. */
7395c052
NZ
6133 if (ofgroup->type != gm->type
6134 && ofproto->n_groups[gm->type] >= ofproto->ogf.max_groups[gm->type]) {
6135 error = OFPERR_OFPGMFC_OUT_OF_GROUPS;
809c7548 6136 goto out;
7395c052
NZ
6137 }
6138
fce4730c
SH
6139 /* Manipulate bucket list for bucket commands */
6140 if (gm->command == OFPGC15_INSERT_BUCKET) {
6141 error = copy_buckets_for_insert_bucket(ofgroup, new_ofgroup,
6142 gm->command_bucket_id);
6143 } else if (gm->command == OFPGC15_REMOVE_BUCKET) {
6144 error = copy_buckets_for_remove_bucket(ofgroup, new_ofgroup,
6145 gm->command_bucket_id);
6146 }
6147 if (error) {
6148 goto out;
6149 }
6150
809c7548 6151 /* The group creation time does not change during modification. */
eaf004bd
AZ
6152 *CONST_CAST(long long int *, &(new_ofgroup->created)) = ofgroup->created;
6153 *CONST_CAST(long long int *, &(new_ofgroup->modified)) = time_msec();
7395c052 6154
809c7548
RW
6155 error = ofproto->ofproto_class->group_modify(new_ofgroup);
6156 if (error) {
6157 goto out;
6158 }
7395c052 6159
809c7548
RW
6160 retiring = ofgroup;
6161 /* Replace ofgroup in ofproto's groups hash map with new_ofgroup. */
6162 hmap_remove(&ofproto->groups, &ofgroup->hmap_node);
6163 hmap_insert(&ofproto->groups, &new_ofgroup->hmap_node,
6164 hash_int(new_ofgroup->group_id, 0));
6165 if (ofgroup->type != new_ofgroup->type) {
6166 ofproto->n_groups[ofgroup->type]--;
6167 ofproto->n_groups[new_ofgroup->type]++;
7395c052
NZ
6168 }
6169
809c7548
RW
6170out:
6171 ofproto_group_unref(retiring);
7395c052 6172 ovs_rwlock_unlock(&ofproto->groups_rwlock);
7395c052
NZ
6173 return error;
6174}
6175
6176static void
6177delete_group__(struct ofproto *ofproto, struct ofgroup *ofgroup)
6178 OVS_RELEASES(ofproto->groups_rwlock)
6179{
276f6518
SH
6180 struct match match;
6181 struct ofputil_flow_mod fm;
6182
6183 /* Delete all flow entries containing this group in a group action */
6184 match_init_catchall(&match);
6185 flow_mod_init(&fm, &match, 0, NULL, 0, OFPFC_DELETE);
cc40d06b 6186 fm.delete_reason = OFPRR_GROUP_DELETE;
276f6518 6187 fm.out_group = ofgroup->group_id;
baae3d02 6188 handle_flow_mod__(ofproto, &fm, NULL);
276f6518 6189
7395c052
NZ
6190 hmap_remove(&ofproto->groups, &ofgroup->hmap_node);
6191 /* No-one can find this group any more. */
6192 ofproto->n_groups[ofgroup->type]--;
6193 ovs_rwlock_unlock(&ofproto->groups_rwlock);
809c7548 6194 ofproto_group_unref(ofgroup);
7395c052
NZ
6195}
6196
6c5b90ce 6197/* Implements OFPGC11_DELETE. */
7395c052
NZ
6198static void
6199delete_group(struct ofproto *ofproto, uint32_t group_id)
6200{
6201 struct ofgroup *ofgroup;
6202
6203 ovs_rwlock_wrlock(&ofproto->groups_rwlock);
6204 if (group_id == OFPG_ALL) {
6205 for (;;) {
6206 struct hmap_node *node = hmap_first(&ofproto->groups);
6207 if (!node) {
6208 break;
6209 }
6210 ofgroup = CONTAINER_OF(node, struct ofgroup, hmap_node);
6211 delete_group__(ofproto, ofgroup);
6212 /* Lock for each node separately, so that we will not jam the
6213 * other threads for too long time. */
6214 ovs_rwlock_wrlock(&ofproto->groups_rwlock);
6215 }
6216 } else {
6217 HMAP_FOR_EACH_IN_BUCKET (ofgroup, hmap_node,
6218 hash_int(group_id, 0), &ofproto->groups) {
6219 if (ofgroup->group_id == group_id) {
6220 delete_group__(ofproto, ofgroup);
6221 return;
6222 }
6223 }
6224 }
6225 ovs_rwlock_unlock(&ofproto->groups_rwlock);
6226}
6227
6228static enum ofperr
6229handle_group_mod(struct ofconn *ofconn, const struct ofp_header *oh)
6230{
6231 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
6232 struct ofputil_group_mod gm;
6233 enum ofperr error;
6234
6235 error = reject_slave_controller(ofconn);
6236 if (error) {
6237 return error;
6238 }
6239
6240 error = ofputil_decode_group_mod(oh, &gm);
6241 if (error) {
6242 return error;
6243 }
6244
6245 switch (gm.command) {
6246 case OFPGC11_ADD:
6247 return add_group(ofproto, &gm);
6248
6249 case OFPGC11_MODIFY:
6250 return modify_group(ofproto, &gm);
6251
6252 case OFPGC11_DELETE:
6253 delete_group(ofproto, gm.group_id);
6254 return 0;
6255
fce4730c
SH
6256 case OFPGC15_INSERT_BUCKET:
6257 return modify_group(ofproto, &gm);
6258
6259 case OFPGC15_REMOVE_BUCKET:
6260 return modify_group(ofproto, &gm);
6261
7395c052
NZ
6262 default:
6263 if (gm.command > OFPGC11_DELETE) {
6264 VLOG_WARN_RL(&rl, "%s: Invalid group_mod command type %d",
6265 ofproto->name, gm.command);
6266 }
6267 return OFPERR_OFPGMFC_BAD_COMMAND;
6268 }
6269}
6270
3c1bb396
BP
6271enum ofputil_table_miss
6272ofproto_table_get_miss_config(const struct ofproto *ofproto, uint8_t table_id)
6d328fa2 6273{
3c1bb396 6274 enum ofputil_table_miss value;
afcea9ea
JR
6275
6276 atomic_read_relaxed(&ofproto->tables[table_id].miss_config, &value);
3c1bb396 6277 return value;
6d328fa2
SH
6278}
6279
67761761
SH
6280static enum ofperr
6281table_mod(struct ofproto *ofproto, const struct ofputil_table_mod *tm)
6282{
3c1bb396 6283 if (!check_table_id(ofproto, tm->table_id)) {
67761761 6284 return OFPERR_OFPTMFC_BAD_TABLE;
3c1bb396
BP
6285 } else if (tm->miss_config != OFPUTIL_TABLE_MISS_DEFAULT) {
6286 if (tm->table_id == OFPTT_ALL) {
6287 int i;
6288 for (i = 0; i < ofproto->n_tables; i++) {
afcea9ea
JR
6289 atomic_store_relaxed(&ofproto->tables[i].miss_config,
6290 tm->miss_config);
3c1bb396
BP
6291 }
6292 } else {
afcea9ea
JR
6293 atomic_store_relaxed(&ofproto->tables[tm->table_id].miss_config,
6294 tm->miss_config);
3c1bb396 6295 }
67761761 6296 }
67761761
SH
6297 return 0;
6298}
6299
918f2b82
AZ
6300static enum ofperr
6301handle_table_mod(struct ofconn *ofconn, const struct ofp_header *oh)
6302{
67761761 6303 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
918f2b82
AZ
6304 struct ofputil_table_mod tm;
6305 enum ofperr error;
6306
6307 error = reject_slave_controller(ofconn);
6308 if (error) {
6309 return error;
6310 }
6311
6312 error = ofputil_decode_table_mod(oh, &tm);
6313 if (error) {
6314 return error;
6315 }
6316
67761761 6317 return table_mod(ofproto, &tm);
918f2b82
AZ
6318}
6319
777af88d
AC
6320static enum ofperr
6321handle_bundle_control(struct ofconn *ofconn, const struct ofp_header *oh)
6322{
6323 enum ofperr error;
6324 struct ofputil_bundle_ctrl_msg bctrl;
6325 struct ofpbuf *buf;
6326 struct ofputil_bundle_ctrl_msg reply;
6327
ba9d374a
JR
6328 error = reject_slave_controller(ofconn);
6329 if (error) {
6330 return error;
6331 }
6332
777af88d
AC
6333 error = ofputil_decode_bundle_ctrl(oh, &bctrl);
6334 if (error) {
6335 return error;
6336 }
6337 reply.flags = 0;
6338 reply.bundle_id = bctrl.bundle_id;
6339
6340 switch (bctrl.type) {
6341 case OFPBCT_OPEN_REQUEST:
6342 error = ofp_bundle_open(ofconn, bctrl.bundle_id, bctrl.flags);
6343 reply.type = OFPBCT_OPEN_REPLY;
6344 break;
6345 case OFPBCT_CLOSE_REQUEST:
6346 error = ofp_bundle_close(ofconn, bctrl.bundle_id, bctrl.flags);
6347 reply.type = OFPBCT_CLOSE_REPLY;;
6348 break;
6349 case OFPBCT_COMMIT_REQUEST:
6350 error = ofp_bundle_commit(ofconn, bctrl.bundle_id, bctrl.flags);
6351 reply.type = OFPBCT_COMMIT_REPLY;
6352 break;
6353 case OFPBCT_DISCARD_REQUEST:
6354 error = ofp_bundle_discard(ofconn, bctrl.bundle_id);
6355 reply.type = OFPBCT_DISCARD_REPLY;
6356 break;
6357
6358 case OFPBCT_OPEN_REPLY:
6359 case OFPBCT_CLOSE_REPLY:
6360 case OFPBCT_COMMIT_REPLY:
6361 case OFPBCT_DISCARD_REPLY:
6362 return OFPERR_OFPBFC_BAD_TYPE;
6363 break;
6364 }
6365
6366 if (!error) {
6367 buf = ofputil_encode_bundle_ctrl_reply(oh, &reply);
6368 ofconn_send_reply(ofconn, buf);
6369 }
6370 return error;
6371}
6372
6373
6374static enum ofperr
6375handle_bundle_add(struct ofconn *ofconn, const struct ofp_header *oh)
6376{
7ac27a04 6377 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
777af88d
AC
6378 enum ofperr error;
6379 struct ofputil_bundle_add_msg badd;
7ac27a04
JR
6380 struct ofp_bundle_entry *bmsg;
6381 enum ofptype type;
777af88d 6382
ba9d374a
JR
6383 error = reject_slave_controller(ofconn);
6384 if (error) {
6385 return error;
6386 }
6387
7ac27a04 6388 error = ofputil_decode_bundle_add(oh, &badd, &type);
777af88d
AC
6389 if (error) {
6390 return error;
6391 }
6392
7ac27a04
JR
6393 bmsg = ofp_bundle_entry_alloc(type, badd.msg->xid);
6394
6395 if (type == OFPTYPE_PORT_MOD) {
6396 error = ofputil_decode_port_mod(badd.msg, &bmsg->pm, false);
6397 } else if (type == OFPTYPE_FLOW_MOD) {
6398 struct ofpbuf ofpacts;
6399 uint64_t ofpacts_stub[1024 / 8];
6400
6401 ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub);
6402 error = ofputil_decode_flow_mod(&bmsg->fm, badd.msg,
6403 ofconn_get_protocol(ofconn),
6404 &ofpacts,
6405 u16_to_ofp(ofproto->max_ports),
6406 ofproto->n_tables);
6407 /* Move actions to heap. */
6408 bmsg->fm.ofpacts = ofpbuf_steal_data(&ofpacts);
6409
6410 if (!error && bmsg->fm.ofpacts_len) {
6411 error = ofproto_check_ofpacts(ofproto, bmsg->fm.ofpacts,
6412 bmsg->fm.ofpacts_len);
6413 }
6414 } else {
6415 OVS_NOT_REACHED();
6416 }
6417
6418 if (!error) {
6419 error = ofp_bundle_add_message(ofconn, badd.bundle_id, badd.flags,
6420 bmsg);
6421 }
6422
6423 if (error) {
6424 ofp_bundle_entry_free(bmsg);
6425 }
6426
6427 return error;
777af88d
AC
6428}
6429
90bf1e07 6430static enum ofperr
d1e2cf21 6431handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg)
15aaf599 6432 OVS_EXCLUDED(ofproto_mutex)
064af421 6433{
6fd6ed71 6434 const struct ofp_header *oh = msg->data;
982697a4 6435 enum ofptype type;
90bf1e07 6436 enum ofperr error;
064af421 6437
982697a4 6438 error = ofptype_decode(&type, oh);
d1e2cf21
BP
6439 if (error) {
6440 return error;
6441 }
ff3c2c63
YT
6442 if (oh->version >= OFP13_VERSION && ofpmsg_is_stat_request(oh)
6443 && ofpmp_more(oh)) {
6444 /* We have no buffer implementation for multipart requests.
6445 * Report overflow for requests which consists of multiple
6446 * messages. */
6447 return OFPERR_OFPBRC_MULTIPART_BUFFER_OVERFLOW;
6448 }
064af421 6449
982697a4 6450 switch (type) {
d1e2cf21 6451 /* OpenFlow requests. */
982697a4 6452 case OFPTYPE_ECHO_REQUEST:
d1e2cf21 6453 return handle_echo_request(ofconn, oh);
064af421 6454
982697a4 6455 case OFPTYPE_FEATURES_REQUEST:
d1e2cf21 6456 return handle_features_request(ofconn, oh);
064af421 6457
982697a4 6458 case OFPTYPE_GET_CONFIG_REQUEST:
d1e2cf21 6459 return handle_get_config_request(ofconn, oh);
064af421 6460
982697a4
BP
6461 case OFPTYPE_SET_CONFIG:
6462 return handle_set_config(ofconn, oh);
064af421 6463
982697a4
BP
6464 case OFPTYPE_PACKET_OUT:
6465 return handle_packet_out(ofconn, oh);
064af421 6466
982697a4 6467 case OFPTYPE_PORT_MOD:
d1e2cf21 6468 return handle_port_mod(ofconn, oh);
064af421 6469
982697a4 6470 case OFPTYPE_FLOW_MOD:
2e4f5fcf 6471 return handle_flow_mod(ofconn, oh);
064af421 6472
7395c052
NZ
6473 case OFPTYPE_GROUP_MOD:
6474 return handle_group_mod(ofconn, oh);
6475
918f2b82
AZ
6476 case OFPTYPE_TABLE_MOD:
6477 return handle_table_mod(ofconn, oh);
6478
9cae45dc
JR
6479 case OFPTYPE_METER_MOD:
6480 return handle_meter_mod(ofconn, oh);
6481
982697a4 6482 case OFPTYPE_BARRIER_REQUEST:
d1e2cf21 6483 return handle_barrier_request(ofconn, oh);
064af421 6484
6ea4776b
JR
6485 case OFPTYPE_ROLE_REQUEST:
6486 return handle_role_request(ofconn, oh);
6487
d1e2cf21 6488 /* OpenFlow replies. */
982697a4 6489 case OFPTYPE_ECHO_REPLY:
d1e2cf21 6490 return 0;
246e61ea 6491
d1e2cf21 6492 /* Nicira extension requests. */
982697a4 6493 case OFPTYPE_FLOW_MOD_TABLE_ID:
6c1491fb 6494 return handle_nxt_flow_mod_table_id(ofconn, oh);
d1e2cf21 6495
982697a4 6496 case OFPTYPE_SET_FLOW_FORMAT:
d1e2cf21
BP
6497 return handle_nxt_set_flow_format(ofconn, oh);
6498
982697a4 6499 case OFPTYPE_SET_PACKET_IN_FORMAT:
54834960
EJ
6500 return handle_nxt_set_packet_in_format(ofconn, oh);
6501
982697a4 6502 case OFPTYPE_SET_CONTROLLER_ID:
a7349929
BP
6503 return handle_nxt_set_controller_id(ofconn, oh);
6504
982697a4 6505 case OFPTYPE_FLOW_AGE:
f27f2134
BP
6506 /* Nothing to do. */
6507 return 0;
6508
982697a4 6509 case OFPTYPE_FLOW_MONITOR_CANCEL:
2b07c8b1
BP
6510 return handle_flow_monitor_cancel(ofconn, oh);
6511
982697a4 6512 case OFPTYPE_SET_ASYNC_CONFIG:
80d5aefd
BP
6513 return handle_nxt_set_async_config(ofconn, oh);
6514
c423b3b3
AC
6515 case OFPTYPE_GET_ASYNC_REQUEST:
6516 return handle_nxt_get_async_request(ofconn, oh);
6517
349adfb2 6518 /* Statistics requests. */
982697a4
BP
6519 case OFPTYPE_DESC_STATS_REQUEST:
6520 return handle_desc_stats_request(ofconn, oh);
6521
6522 case OFPTYPE_FLOW_STATS_REQUEST:
6523 return handle_flow_stats_request(ofconn, oh);
6524
6525 case OFPTYPE_AGGREGATE_STATS_REQUEST:
6526 return handle_aggregate_stats_request(ofconn, oh);
6527
6528 case OFPTYPE_TABLE_STATS_REQUEST:
6529 return handle_table_stats_request(ofconn, oh);
6530
3c4e10fb
BP
6531 case OFPTYPE_TABLE_FEATURES_STATS_REQUEST:
6532 return handle_table_features_request(ofconn, oh);
6533
982697a4
BP
6534 case OFPTYPE_PORT_STATS_REQUEST:
6535 return handle_port_stats_request(ofconn, oh);
6536
6537 case OFPTYPE_QUEUE_STATS_REQUEST:
6538 return handle_queue_stats_request(ofconn, oh);
6539
6540 case OFPTYPE_PORT_DESC_STATS_REQUEST:
6541 return handle_port_desc_stats_request(ofconn, oh);
6542
6543 case OFPTYPE_FLOW_MONITOR_STATS_REQUEST:
6544 return handle_flow_monitor_request(ofconn, oh);
6545
261bd854
BP
6546 case OFPTYPE_METER_STATS_REQUEST:
6547 case OFPTYPE_METER_CONFIG_STATS_REQUEST:
9cae45dc
JR
6548 return handle_meter_request(ofconn, oh, type);
6549
261bd854 6550 case OFPTYPE_METER_FEATURES_STATS_REQUEST:
9cae45dc
JR
6551 return handle_meter_features_request(ofconn, oh);
6552
261bd854 6553 case OFPTYPE_GROUP_STATS_REQUEST:
7395c052
NZ
6554 return handle_group_stats_request(ofconn, oh);
6555
261bd854 6556 case OFPTYPE_GROUP_DESC_STATS_REQUEST:
7395c052
NZ
6557 return handle_group_desc_stats_request(ofconn, oh);
6558
261bd854 6559 case OFPTYPE_GROUP_FEATURES_STATS_REQUEST:
7395c052
NZ
6560 return handle_group_features_stats_request(ofconn, oh);
6561
7395c052 6562 case OFPTYPE_QUEUE_GET_CONFIG_REQUEST:
e8f9a7bb 6563 return handle_queue_get_config_request(ofconn, oh);
2e1ae200 6564
777af88d
AC
6565 case OFPTYPE_BUNDLE_CONTROL:
6566 return handle_bundle_control(ofconn, oh);
6567
6568 case OFPTYPE_BUNDLE_ADD_MESSAGE:
6569 return handle_bundle_add(ofconn, oh);
6570
982697a4
BP
6571 case OFPTYPE_HELLO:
6572 case OFPTYPE_ERROR:
6573 case OFPTYPE_FEATURES_REPLY:
6574 case OFPTYPE_GET_CONFIG_REPLY:
6575 case OFPTYPE_PACKET_IN:
6576 case OFPTYPE_FLOW_REMOVED:
6577 case OFPTYPE_PORT_STATUS:
6578 case OFPTYPE_BARRIER_REPLY:
c545d38d 6579 case OFPTYPE_QUEUE_GET_CONFIG_REPLY:
982697a4
BP
6580 case OFPTYPE_DESC_STATS_REPLY:
6581 case OFPTYPE_FLOW_STATS_REPLY:
6582 case OFPTYPE_QUEUE_STATS_REPLY:
6583 case OFPTYPE_PORT_STATS_REPLY:
6584 case OFPTYPE_TABLE_STATS_REPLY:
6585 case OFPTYPE_AGGREGATE_STATS_REPLY:
6586 case OFPTYPE_PORT_DESC_STATS_REPLY:
6587 case OFPTYPE_ROLE_REPLY:
6588 case OFPTYPE_FLOW_MONITOR_PAUSED:
6589 case OFPTYPE_FLOW_MONITOR_RESUMED:
6590 case OFPTYPE_FLOW_MONITOR_STATS_REPLY:
2e1ae200 6591 case OFPTYPE_GET_ASYNC_REPLY:
261bd854
BP
6592 case OFPTYPE_GROUP_STATS_REPLY:
6593 case OFPTYPE_GROUP_DESC_STATS_REPLY:
6594 case OFPTYPE_GROUP_FEATURES_STATS_REPLY:
6595 case OFPTYPE_METER_STATS_REPLY:
6596 case OFPTYPE_METER_CONFIG_STATS_REPLY:
6597 case OFPTYPE_METER_FEATURES_STATS_REPLY:
6598 case OFPTYPE_TABLE_FEATURES_STATS_REPLY:
252f3411 6599 case OFPTYPE_ROLE_STATUS:
064af421 6600 default:
76ec08e0
YT
6601 if (ofpmsg_is_stat_request(oh)) {
6602 return OFPERR_OFPBRC_BAD_STAT;
6603 } else {
6604 return OFPERR_OFPBRC_BAD_TYPE;
6605 }
064af421 6606 }
d1e2cf21 6607}
064af421 6608
b20f4073 6609static void
e03248b7 6610handle_openflow(struct ofconn *ofconn, const struct ofpbuf *ofp_msg)
15aaf599 6611 OVS_EXCLUDED(ofproto_mutex)
d1e2cf21
BP
6612{
6613 int error = handle_openflow__(ofconn, ofp_msg);
b20f4073 6614 if (error) {
6fd6ed71 6615 ofconn_send_error(ofconn, ofp_msg->data, error);
064af421 6616 }
d1e2cf21 6617 COVERAGE_INC(ofproto_recv_openflow);
7ee20df1
BP
6618}
6619\f
6620/* Asynchronous operations. */
6621
834fe5cb
BP
6622static enum ofperr
6623send_buffered_packet(struct ofconn *ofconn, uint32_t buffer_id,
6624 struct rule *rule)
15aaf599 6625 OVS_REQUIRES(ofproto_mutex)
7ee20df1 6626{
834fe5cb
BP
6627 enum ofperr error = 0;
6628 if (ofconn && buffer_id != UINT32_MAX) {
6629 struct ofproto *ofproto = ofconn_get_ofproto(ofconn);
cf62fa4c 6630 struct dp_packet *packet;
834fe5cb 6631 ofp_port_t in_port;
b277c7cc 6632
834fe5cb
BP
6633 error = ofconn_pktbuf_retrieve(ofconn, buffer_id, &packet, &in_port);
6634 if (packet) {
6635 struct rule_execute *re;
b277c7cc 6636
834fe5cb 6637 ofproto_rule_ref(rule);
b277c7cc 6638
834fe5cb
BP
6639 re = xmalloc(sizeof *re);
6640 re->rule = rule;
6641 re->in_port = in_port;
6642 re->packet = packet;
b277c7cc 6643
834fe5cb
BP
6644 if (!guarded_list_push_back(&ofproto->rule_executes,
6645 &re->list_node, 1024)) {
a2143702 6646 ofproto_rule_unref(rule);
cf62fa4c 6647 dp_packet_delete(re->packet);
834fe5cb 6648 free(re);
e615b0a3 6649 }
af822017 6650 }
7ee20df1 6651 }
834fe5cb 6652 return error;
7ee20df1 6653}
064af421 6654\f
064af421 6655static uint64_t
fa60c019 6656pick_datapath_id(const struct ofproto *ofproto)
064af421 6657{
fa60c019 6658 const struct ofport *port;
064af421 6659
abe529af 6660 port = ofproto_get_port(ofproto, OFPP_LOCAL);
fa60c019
BP
6661 if (port) {
6662 uint8_t ea[ETH_ADDR_LEN];
6663 int error;
6664
6665 error = netdev_get_etheraddr(port->netdev, ea);
064af421
BP
6666 if (!error) {
6667 return eth_addr_to_uint64(ea);
6668 }
fbfa2911
BP
6669 VLOG_WARN("%s: could not get MAC address for %s (%s)",
6670 ofproto->name, netdev_get_name(port->netdev),
10a89ef0 6671 ovs_strerror(error));
064af421 6672 }
fa60c019 6673 return ofproto->fallback_dpid;
064af421
BP
6674}
6675
6676static uint64_t
6677pick_fallback_dpid(void)
6678{
6679 uint8_t ea[ETH_ADDR_LEN];
70150daf 6680 eth_addr_nicira_random(ea);
064af421
BP
6681 return eth_addr_to_uint64(ea);
6682}
6683\f
254750ce
BP
6684/* Table overflow policy. */
6685
ad3efdcb
EJ
6686/* Chooses and updates 'rulep' with a rule to evict from 'table'. Sets 'rulep'
6687 * to NULL if the table is not configured to evict rules or if the table
6688 * contains no evictable rules. (Rules with a readlock on their evict rwlock,
6689 * or with no timeouts are not evictable.) */
6690static bool
6691choose_rule_to_evict(struct oftable *table, struct rule **rulep)
15aaf599 6692 OVS_REQUIRES(ofproto_mutex)
254750ce
BP
6693{
6694 struct eviction_group *evg;
6695
ad3efdcb 6696 *rulep = NULL;
254750ce 6697 if (!table->eviction_fields) {
ad3efdcb 6698 return false;
254750ce
BP
6699 }
6700
6701 /* In the common case, the outer and inner loops here will each be entered
6702 * exactly once:
6703 *
6704 * - The inner loop normally "return"s in its first iteration. If the
6705 * eviction group has any evictable rules, then it always returns in
6706 * some iteration.
6707 *
6708 * - The outer loop only iterates more than once if the largest eviction
6709 * group has no evictable rules.
6710 *
6711 * - The outer loop can exit only if table's 'max_flows' is all filled up
afe2143d 6712 * by unevictable rules. */
254750ce
BP
6713 HEAP_FOR_EACH (evg, size_node, &table->eviction_groups_by_size) {
6714 struct rule *rule;
6715
6716 HEAP_FOR_EACH (rule, evg_node, &evg->rules) {
15aaf599
BP
6717 *rulep = rule;
6718 return true;
254750ce
BP
6719 }
6720 }
6721
ad3efdcb 6722 return false;
254750ce 6723}
254750ce
BP
6724\f
6725/* Eviction groups. */
6726
6727/* Returns the priority to use for an eviction_group that contains 'n_rules'
6728 * rules. The priority contains low-order random bits to ensure that eviction
6729 * groups with the same number of rules are prioritized randomly. */
6730static uint32_t
6731eviction_group_priority(size_t n_rules)
6732{
6733 uint16_t size = MIN(UINT16_MAX, n_rules);
6734 return (size << 16) | random_uint16();
6735}
6736
6737/* Updates 'evg', an eviction_group within 'table', following a change that
6738 * adds or removes rules in 'evg'. */
6739static void
6740eviction_group_resized(struct oftable *table, struct eviction_group *evg)
15aaf599 6741 OVS_REQUIRES(ofproto_mutex)
254750ce
BP
6742{
6743 heap_change(&table->eviction_groups_by_size, &evg->size_node,
6744 eviction_group_priority(heap_count(&evg->rules)));
6745}
6746
6747/* Destroys 'evg', an eviction_group within 'table':
6748 *
6749 * - Removes all the rules, if any, from 'evg'. (It doesn't destroy the
6750 * rules themselves, just removes them from the eviction group.)
6751 *
6752 * - Removes 'evg' from 'table'.
6753 *
6754 * - Frees 'evg'. */
6755static void
6756eviction_group_destroy(struct oftable *table, struct eviction_group *evg)
15aaf599 6757 OVS_REQUIRES(ofproto_mutex)
254750ce
BP
6758{
6759 while (!heap_is_empty(&evg->rules)) {
6760 struct rule *rule;
6761
6762 rule = CONTAINER_OF(heap_pop(&evg->rules), struct rule, evg_node);
6763 rule->eviction_group = NULL;
6764 }
6765 hmap_remove(&table->eviction_groups_by_id, &evg->id_node);
6766 heap_remove(&table->eviction_groups_by_size, &evg->size_node);
6767 heap_destroy(&evg->rules);
6768 free(evg);
6769}
6770
6771/* Removes 'rule' from its eviction group, if any. */
6772static void
6773eviction_group_remove_rule(struct rule *rule)
15aaf599 6774 OVS_REQUIRES(ofproto_mutex)
254750ce
BP
6775{
6776 if (rule->eviction_group) {
6777 struct oftable *table = &rule->ofproto->tables[rule->table_id];
6778 struct eviction_group *evg = rule->eviction_group;
6779
6780 rule->eviction_group = NULL;
6781 heap_remove(&evg->rules, &rule->evg_node);
6782 if (heap_is_empty(&evg->rules)) {
6783 eviction_group_destroy(table, evg);
6784 } else {
6785 eviction_group_resized(table, evg);
6786 }
6787 }
6788}
6789
6790/* Hashes the 'rule''s values for the eviction_fields of 'rule''s table, and
6791 * returns the hash value. */
6792static uint32_t
6793eviction_group_hash_rule(struct rule *rule)
15aaf599 6794 OVS_REQUIRES(ofproto_mutex)
254750ce
BP
6795{
6796 struct oftable *table = &rule->ofproto->tables[rule->table_id];
6797 const struct mf_subfield *sf;
5cb7a798 6798 struct flow flow;
254750ce
BP
6799 uint32_t hash;
6800
6801 hash = table->eviction_group_id_basis;
5cb7a798 6802 miniflow_expand(&rule->cr.match.flow, &flow);
254750ce
BP
6803 for (sf = table->eviction_fields;
6804 sf < &table->eviction_fields[table->n_eviction_fields];
6805 sf++)
6806 {
5cb7a798 6807 if (mf_are_prereqs_ok(sf->field, &flow)) {
254750ce
BP
6808 union mf_value value;
6809
5cb7a798 6810 mf_get_value(sf->field, &flow, &value);
254750ce
BP
6811 if (sf->ofs) {
6812 bitwise_zero(&value, sf->field->n_bytes, 0, sf->ofs);
6813 }
6814 if (sf->ofs + sf->n_bits < sf->field->n_bytes * 8) {
6815 unsigned int start = sf->ofs + sf->n_bits;
6816 bitwise_zero(&value, sf->field->n_bytes, start,
6817 sf->field->n_bytes * 8 - start);
6818 }
6819 hash = hash_bytes(&value, sf->field->n_bytes, hash);
6820 } else {
6821 hash = hash_int(hash, 0);
6822 }
6823 }
6824
6825 return hash;
6826}
6827
6828/* Returns an eviction group within 'table' with the given 'id', creating one
6829 * if necessary. */
6830static struct eviction_group *
6831eviction_group_find(struct oftable *table, uint32_t id)
15aaf599 6832 OVS_REQUIRES(ofproto_mutex)
254750ce
BP
6833{
6834 struct eviction_group *evg;
6835
6836 HMAP_FOR_EACH_WITH_HASH (evg, id_node, id, &table->eviction_groups_by_id) {
6837 return evg;
6838 }
6839
6840 evg = xmalloc(sizeof *evg);
6841 hmap_insert(&table->eviction_groups_by_id, &evg->id_node, id);
6842 heap_insert(&table->eviction_groups_by_size, &evg->size_node,
6843 eviction_group_priority(0));
6844 heap_init(&evg->rules);
6845
6846 return evg;
6847}
6848
6849/* Returns an eviction priority for 'rule'. The return value should be
6850 * interpreted so that higher priorities make a rule more attractive candidates
dc437090
JR
6851 * for eviction.
6852 * Called only if have a timeout. */
254750ce 6853static uint32_t
dc437090 6854rule_eviction_priority(struct ofproto *ofproto, struct rule *rule)
15aaf599 6855 OVS_REQUIRES(ofproto_mutex)
254750ce 6856{
dc437090
JR
6857 long long int expiration = LLONG_MAX;
6858 long long int modified;
254750ce
BP
6859 uint32_t expiration_offset;
6860
dc437090 6861 /* 'modified' needs protection even when we hold 'ofproto_mutex'. */
d10976b7 6862 ovs_mutex_lock(&rule->mutex);
dc437090 6863 modified = rule->modified;
d10976b7 6864 ovs_mutex_unlock(&rule->mutex);
dc437090
JR
6865
6866 if (rule->hard_timeout) {
6867 expiration = modified + rule->hard_timeout * 1000;
6868 }
6869 if (rule->idle_timeout) {
6870 uint64_t packets, bytes;
6871 long long int used;
6872 long long int idle_expiration;
6873
6874 ofproto->ofproto_class->rule_get_stats(rule, &packets, &bytes, &used);
6875 idle_expiration = used + rule->idle_timeout * 1000;
6876 expiration = MIN(expiration, idle_expiration);
6877 }
6878
254750ce
BP
6879 if (expiration == LLONG_MAX) {
6880 return 0;
6881 }
6882
6883 /* Calculate the time of expiration as a number of (approximate) seconds
6884 * after program startup.
6885 *
6886 * This should work OK for program runs that last UINT32_MAX seconds or
6887 * less. Therefore, please restart OVS at least once every 136 years. */
6888 expiration_offset = (expiration >> 10) - (time_boot_msec() >> 10);
6889
6890 /* Invert the expiration offset because we're using a max-heap. */
6891 return UINT32_MAX - expiration_offset;
6892}
6893
6894/* Adds 'rule' to an appropriate eviction group for its oftable's
6895 * configuration. Does nothing if 'rule''s oftable doesn't have eviction
6896 * enabled, or if 'rule' is a permanent rule (one that will never expire on its
6897 * own).
6898 *
6899 * The caller must ensure that 'rule' is not already in an eviction group. */
6900static void
6901eviction_group_add_rule(struct rule *rule)
15aaf599 6902 OVS_REQUIRES(ofproto_mutex)
254750ce
BP
6903{
6904 struct ofproto *ofproto = rule->ofproto;
6905 struct oftable *table = &ofproto->tables[rule->table_id];
a3779dbc 6906 bool has_timeout;
254750ce 6907
dc437090
JR
6908 /* Timeouts may be modified only when holding 'ofproto_mutex'. We have it
6909 * so no additional protection is needed. */
a3779dbc 6910 has_timeout = rule->hard_timeout || rule->idle_timeout;
a3779dbc
EJ
6911
6912 if (table->eviction_fields && has_timeout) {
254750ce
BP
6913 struct eviction_group *evg;
6914
6915 evg = eviction_group_find(table, eviction_group_hash_rule(rule));
6916
6917 rule->eviction_group = evg;
6918 heap_insert(&evg->rules, &rule->evg_node,
dc437090 6919 rule_eviction_priority(ofproto, rule));
254750ce
BP
6920 eviction_group_resized(table, evg);
6921 }
6922}
6923\f
d0918789
BP
6924/* oftables. */
6925
6926/* Initializes 'table'. */
6927static void
6928oftable_init(struct oftable *table)
6929{
5c67e4af 6930 memset(table, 0, sizeof *table);
d70e8c28 6931 classifier_init(&table->cls, flow_segment_u64s);
ec1c5c7e 6932 table->max_flows = UINT_MAX;
3c1bb396 6933 atomic_init(&table->miss_config, OFPUTIL_TABLE_MISS_DEFAULT);
f017d986 6934
f017d986
JR
6935 classifier_set_prefix_fields(&table->cls, default_prefix_fields,
6936 ARRAY_SIZE(default_prefix_fields));
d611866c
SH
6937
6938 atomic_init(&table->n_matched, 0);
6939 atomic_init(&table->n_missed, 0);
d0918789
BP
6940}
6941
254750ce 6942/* Destroys 'table', including its classifier and eviction groups.
d0918789
BP
6943 *
6944 * The caller is responsible for freeing 'table' itself. */
6945static void
6946oftable_destroy(struct oftable *table)
6947{
cb22974d 6948 ovs_assert(classifier_is_empty(&table->cls));
254750ce 6949 oftable_disable_eviction(table);
d0918789 6950 classifier_destroy(&table->cls);
254750ce
BP
6951 free(table->name);
6952}
6953
6954/* Changes the name of 'table' to 'name'. If 'name' is NULL or the empty
6955 * string, then 'table' will use its default name.
6956 *
6957 * This only affects the name exposed for a table exposed through the OpenFlow
6958 * OFPST_TABLE (as printed by "ovs-ofctl dump-tables"). */
6959static void
6960oftable_set_name(struct oftable *table, const char *name)
6961{
6962 if (name && name[0]) {
6963 int len = strnlen(name, OFP_MAX_TABLE_NAME_LEN);
6964 if (!table->name || strncmp(name, table->name, len)) {
6965 free(table->name);
6966 table->name = xmemdup0(name, len);
6967 }
6968 } else {
6969 free(table->name);
6970 table->name = NULL;
6971 }
6972}
6973
6974/* oftables support a choice of two policies when adding a rule would cause the
6975 * number of flows in the table to exceed the configured maximum number: either
6976 * they can refuse to add the new flow or they can evict some existing flow.
6977 * This function configures the former policy on 'table'. */
6978static void
6979oftable_disable_eviction(struct oftable *table)
15aaf599 6980 OVS_REQUIRES(ofproto_mutex)
254750ce
BP
6981{
6982 if (table->eviction_fields) {
6983 struct eviction_group *evg, *next;
6984
6985 HMAP_FOR_EACH_SAFE (evg, next, id_node,
6986 &table->eviction_groups_by_id) {
6987 eviction_group_destroy(table, evg);
6988 }
6989 hmap_destroy(&table->eviction_groups_by_id);
6990 heap_destroy(&table->eviction_groups_by_size);
6991
6992 free(table->eviction_fields);
6993 table->eviction_fields = NULL;
6994 table->n_eviction_fields = 0;
6995 }
6996}
6997
6998/* oftables support a choice of two policies when adding a rule would cause the
6999 * number of flows in the table to exceed the configured maximum number: either
7000 * they can refuse to add the new flow or they can evict some existing flow.
7001 * This function configures the latter policy on 'table', with fairness based
7002 * on the values of the 'n_fields' fields specified in 'fields'. (Specifying
7003 * 'n_fields' as 0 disables fairness.) */
7004static void
7005oftable_enable_eviction(struct oftable *table,
7006 const struct mf_subfield *fields, size_t n_fields)
15aaf599 7007 OVS_REQUIRES(ofproto_mutex)
254750ce 7008{
254750ce
BP
7009 struct rule *rule;
7010
7011 if (table->eviction_fields
7012 && n_fields == table->n_eviction_fields
7013 && (!n_fields
7014 || !memcmp(fields, table->eviction_fields,
7015 n_fields * sizeof *fields))) {
7016 /* No change. */
7017 return;
7018 }
7019
7020 oftable_disable_eviction(table);
7021
7022 table->n_eviction_fields = n_fields;
7023 table->eviction_fields = xmemdup(fields, n_fields * sizeof *fields);
7024
7025 table->eviction_group_id_basis = random_uint32();
7026 hmap_init(&table->eviction_groups_by_id);
7027 heap_init(&table->eviction_groups_by_size);
7028
5f0476ce 7029 CLS_FOR_EACH (rule, cr, &table->cls) {
254750ce
BP
7030 eviction_group_add_rule(rule);
7031 }
d0918789
BP
7032}
7033
bc5e6a91
JR
7034/* Inserts 'rule' from the ofproto data structures BEFORE caller has inserted
7035 * it to the classifier. */
7036static void
7037ofproto_rule_insert__(struct ofproto *ofproto, struct rule *rule)
7038 OVS_REQUIRES(ofproto_mutex)
7039{
7040 const struct rule_actions *actions = rule_get_actions(rule);
7041
7042 if (rule->hard_timeout || rule->idle_timeout) {
7043 list_insert(&ofproto->expirable, &rule->expirable);
7044 }
7045 cookies_insert(ofproto, rule);
7046 eviction_group_add_rule(rule);
7047 if (actions->has_meter) {
7048 meter_insert_rule(rule);
7049 }
7050}
7051
802f84ff
JR
7052/* Removes 'rule' from the ofproto data structures AFTER caller has removed
7053 * it from the classifier. */
d0918789 7054static void
802f84ff 7055ofproto_rule_remove__(struct ofproto *ofproto, struct rule *rule)
15aaf599 7056 OVS_REQUIRES(ofproto_mutex)
d0918789 7057{
98eaac36 7058 cookies_remove(ofproto, rule);
2c916028 7059
254750ce 7060 eviction_group_remove_rule(rule);
e503cc19
SH
7061 if (!list_is_empty(&rule->expirable)) {
7062 list_remove(&rule->expirable);
7063 }
9cae45dc
JR
7064 if (!list_is_empty(&rule->meter_list_node)) {
7065 list_remove(&rule->meter_list_node);
51b50dfd 7066 list_init(&rule->meter_list_node);
9cae45dc 7067 }
d0918789
BP
7068}
7069
0b4f2078
EJ
7070static void
7071oftable_remove_rule(struct rule *rule)
15aaf599 7072 OVS_REQUIRES(ofproto_mutex)
0b4f2078 7073{
802f84ff
JR
7074 struct classifier *cls = &rule->ofproto->tables[rule->table_id].cls;
7075
7076 if (classifier_remove(cls, &rule->cr)) {
7077 ofproto_rule_remove__(rule->ofproto, rule);
7078 }
0b4f2078 7079}
d0918789 7080\f
abe529af 7081/* unixctl commands. */
7aa697dd 7082
abe529af 7083struct ofproto *
2ac6bedd 7084ofproto_lookup(const char *name)
7aa697dd 7085{
2ac6bedd 7086 struct ofproto *ofproto;
7aa697dd 7087
2ac6bedd
BP
7088 HMAP_FOR_EACH_WITH_HASH (ofproto, hmap_node, hash_string(name, 0),
7089 &all_ofprotos) {
7090 if (!strcmp(ofproto->name, name)) {
7091 return ofproto;
7092 }
7aa697dd 7093 }
2ac6bedd 7094 return NULL;
7aa697dd
BP
7095}
7096
7097static void
0e15264f
BP
7098ofproto_unixctl_list(struct unixctl_conn *conn, int argc OVS_UNUSED,
7099 const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
7aa697dd 7100{
7aa697dd 7101 struct ofproto *ofproto;
7aa697dd 7102 struct ds results;
7aa697dd 7103
7aa697dd 7104 ds_init(&results);
2ac6bedd
BP
7105 HMAP_FOR_EACH (ofproto, hmap_node, &all_ofprotos) {
7106 ds_put_format(&results, "%s\n", ofproto->name);
7aa697dd 7107 }
bde9f75d 7108 unixctl_command_reply(conn, ds_cstr(&results));
7aa697dd 7109 ds_destroy(&results);
7aa697dd
BP
7110}
7111
7112static void
7113ofproto_unixctl_init(void)
7114{
7115 static bool registered;
7116 if (registered) {
7117 return;
7118 }
7119 registered = true;
7120
0e15264f
BP
7121 unixctl_command_register("ofproto/list", "", 0, 0,
7122 ofproto_unixctl_list, NULL);
064af421 7123}
52a90c29
BP
7124\f
7125/* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
7126 *
7127 * This is deprecated. It is only for compatibility with broken device drivers
7128 * in old versions of Linux that do not properly support VLANs when VLAN
7129 * devices are not used. When broken device drivers are no longer in
7130 * widespread use, we will delete these interfaces. */
7131
7132/* Sets a 1-bit in the 4096-bit 'vlan_bitmap' for each VLAN ID that is matched
7133 * (exactly) by an OpenFlow rule in 'ofproto'. */
7134void
7135ofproto_get_vlan_usage(struct ofproto *ofproto, unsigned long int *vlan_bitmap)
7136{
ac4aa4c8
JR
7137 struct match match;
7138 struct cls_rule target;
d0918789 7139 const struct oftable *oftable;
52a90c29 7140
ac4aa4c8
JR
7141 match_init_catchall(&match);
7142 match_set_vlan_vid_masked(&match, htons(VLAN_CFI), htons(VLAN_CFI));
7143 cls_rule_init(&target, &match, 0);
7144
52a90c29
BP
7145 free(ofproto->vlan_bitmap);
7146 ofproto->vlan_bitmap = bitmap_allocate(4096);
7147 ofproto->vlans_changed = false;
7148
d0918789 7149 OFPROTO_FOR_EACH_TABLE (oftable, ofproto) {
ac4aa4c8 7150 struct rule *rule;
52a90c29 7151
5f0476ce 7152 CLS_FOR_EACH_TARGET (rule, cr, &oftable->cls, &target) {
ac4aa4c8
JR
7153 if (minimask_get_vid_mask(&rule->cr.match.mask) == VLAN_VID_MASK) {
7154 uint16_t vid = miniflow_get_vid(&rule->cr.match.flow);
7155
7156 bitmap_set1(vlan_bitmap, vid);
7157 bitmap_set1(ofproto->vlan_bitmap, vid);
52a90c29
BP
7158 }
7159 }
7160 }
059ef3c6
EJ
7161
7162 cls_rule_destroy(&target);
52a90c29
BP
7163}
7164
7165/* Returns true if new VLANs have come into use by the flow table since the
7166 * last call to ofproto_get_vlan_usage().
7167 *
7168 * We don't track when old VLANs stop being used. */
7169bool
7170ofproto_has_vlan_usage_changed(const struct ofproto *ofproto)
7171{
7172 return ofproto->vlans_changed;
7173}
7174
7175/* Configures a VLAN splinter binding between the ports identified by OpenFlow
7176 * port numbers 'vlandev_ofp_port' and 'realdev_ofp_port'. If
7177 * 'realdev_ofp_port' is nonzero, then the VLAN device is enslaved to the real
7178 * device as a VLAN splinter for VLAN ID 'vid'. If 'realdev_ofp_port' is zero,
7179 * then the VLAN device is un-enslaved. */
7180int
4e022ec0
AW
7181ofproto_port_set_realdev(struct ofproto *ofproto, ofp_port_t vlandev_ofp_port,
7182 ofp_port_t realdev_ofp_port, int vid)
52a90c29
BP
7183{
7184 struct ofport *ofport;
7185 int error;
7186
cb22974d 7187 ovs_assert(vlandev_ofp_port != realdev_ofp_port);
52a90c29
BP
7188
7189 ofport = ofproto_get_port(ofproto, vlandev_ofp_port);
7190 if (!ofport) {
7191 VLOG_WARN("%s: cannot set realdev on nonexistent port %"PRIu16,
7192 ofproto->name, vlandev_ofp_port);
7193 return EINVAL;
7194 }
7195
7196 if (!ofproto->ofproto_class->set_realdev) {
7197 if (!vlandev_ofp_port) {
7198 return 0;
7199 }
7200 VLOG_WARN("%s: vlan splinters not supported", ofproto->name);
7201 return EOPNOTSUPP;
7202 }
7203
7204 error = ofproto->ofproto_class->set_realdev(ofport, realdev_ofp_port, vid);
7205 if (error) {
7206 VLOG_WARN("%s: setting realdev on port %"PRIu16" (%s) failed (%s)",
7207 ofproto->name, vlandev_ofp_port,
10a89ef0 7208 netdev_get_name(ofport->netdev), ovs_strerror(error));
52a90c29
BP
7209 }
7210 return error;
7211}