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064af421 | 1 | /* |
7dbd520e | 2 | * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2016 Nicira, Inc. |
064af421 | 3 | * |
a14bc59f BP |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
5 | * you may not use this file except in compliance with the License. | |
6 | * You may obtain a copy of the License at: | |
064af421 | 7 | * |
a14bc59f BP |
8 | * http://www.apache.org/licenses/LICENSE-2.0 |
9 | * | |
10 | * Unless required by applicable law or agreed to in writing, software | |
11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 | * See the License for the specific language governing permissions and | |
14 | * limitations under the License. | |
064af421 BP |
15 | */ |
16 | ||
17 | #include <config.h> | |
18 | #include "netdev.h" | |
19 | ||
064af421 | 20 | #include <errno.h> |
064af421 | 21 | #include <inttypes.h> |
064af421 BP |
22 | #include <netinet/in.h> |
23 | #include <stdlib.h> | |
24 | #include <string.h> | |
25 | #include <unistd.h> | |
26 | ||
a8704b50 PS |
27 | #ifndef _WIN32 |
28 | #include <ifaddrs.h> | |
29 | #include <net/if.h> | |
30 | #include <sys/ioctl.h> | |
31 | #include <sys/types.h> | |
32 | #endif | |
33 | ||
064af421 | 34 | #include "coverage.h" |
94a53842 | 35 | #include "dpif.h" |
cf62fa4c | 36 | #include "dp-packet.h" |
3e8a2ad1 | 37 | #include "openvswitch/dynamic-string.h" |
064af421 | 38 | #include "fatal-signal.h" |
149f577a | 39 | #include "hash.h" |
b19bab5b | 40 | #include "openvswitch/list.h" |
8a9562d2 | 41 | #include "netdev-dpdk.h" |
8b61709d | 42 | #include "netdev-provider.h" |
2b9d6589 | 43 | #include "netdev-vport.h" |
d625fbd1 | 44 | #include "odp-netlink.h" |
622ee2cf | 45 | #include "openflow/openflow.h" |
064af421 BP |
46 | #include "packets.h" |
47 | #include "poll-loop.h" | |
a36de779 | 48 | #include "seq.h" |
e9e28be3 | 49 | #include "shash.h" |
79f1cbe9 | 50 | #include "smap.h" |
b3c01ed3 | 51 | #include "sset.h" |
064af421 | 52 | #include "svec.h" |
e6211adc | 53 | #include "openvswitch/vlog.h" |
c876a4bb | 54 | #include "flow.h" |
a8704b50 | 55 | #include "util.h" |
064af421 | 56 | |
d98e6007 | 57 | VLOG_DEFINE_THIS_MODULE(netdev); |
5136ce49 | 58 | |
d76f09ea BP |
59 | COVERAGE_DEFINE(netdev_received); |
60 | COVERAGE_DEFINE(netdev_sent); | |
61 | COVERAGE_DEFINE(netdev_add_router); | |
62 | COVERAGE_DEFINE(netdev_get_stats); | |
63 | ||
4b609110 | 64 | struct netdev_saved_flags { |
b5d57fc8 | 65 | struct netdev *netdev; |
ca6ba700 | 66 | struct ovs_list node; /* In struct netdev's saved_flags_list. */ |
4b609110 BP |
67 | enum netdev_flags saved_flags; |
68 | enum netdev_flags saved_values; | |
69 | }; | |
70 | ||
86383816 BP |
71 | /* Protects 'netdev_shash' and the mutable members of struct netdev. */ |
72 | static struct ovs_mutex netdev_mutex = OVS_MUTEX_INITIALIZER; | |
064af421 | 73 | |
6c88d577 | 74 | /* All created network devices. */ |
86383816 BP |
75 | static struct shash netdev_shash OVS_GUARDED_BY(netdev_mutex) |
76 | = SHASH_INITIALIZER(&netdev_shash); | |
77 | ||
78 | /* Protects 'netdev_classes' against insertions or deletions. | |
79 | * | |
da695497 BP |
80 | * This is a recursive mutex to allow recursive acquisition when calling into |
81 | * providers. For example, netdev_run() calls into provider 'run' functions, | |
82 | * which might reasonably want to call one of the netdev functions that takes | |
83 | * netdev_class_mutex. */ | |
84 | static struct ovs_mutex netdev_class_mutex OVS_ACQ_BEFORE(netdev_mutex); | |
86383816 BP |
85 | |
86 | /* Contains 'struct netdev_registered_class'es. */ | |
da695497 | 87 | static struct hmap netdev_classes OVS_GUARDED_BY(netdev_class_mutex) |
86383816 BP |
88 | = HMAP_INITIALIZER(&netdev_classes); |
89 | ||
90 | struct netdev_registered_class { | |
fd0318be JR |
91 | /* In 'netdev_classes', by class->type. */ |
92 | struct hmap_node hmap_node OVS_GUARDED_BY(netdev_class_mutex); | |
93 | const struct netdev_class *class OVS_GUARDED_BY(netdev_class_mutex); | |
94 | /* Number of 'struct netdev's of this class. */ | |
95 | int ref_cnt OVS_GUARDED_BY(netdev_class_mutex); | |
86383816 | 96 | }; |
064af421 | 97 | |
064af421 BP |
98 | /* This is set pretty low because we probably won't learn anything from the |
99 | * additional log messages. */ | |
100 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20); | |
101 | ||
4b609110 | 102 | static void restore_all_flags(void *aux OVS_UNUSED); |
b5d57fc8 | 103 | void update_device_args(struct netdev *, const struct shash *args); |
8b61709d | 104 | |
f00fa8cb AW |
105 | int |
106 | netdev_n_txq(const struct netdev *netdev) | |
107 | { | |
108 | return netdev->n_txq; | |
109 | } | |
110 | ||
55c955bd PS |
111 | int |
112 | netdev_n_rxq(const struct netdev *netdev) | |
113 | { | |
114 | return netdev->n_rxq; | |
115 | } | |
116 | ||
a14b8947 IM |
117 | int |
118 | netdev_requested_n_rxq(const struct netdev *netdev) | |
119 | { | |
120 | return netdev->requested_n_rxq; | |
121 | } | |
122 | ||
e4cfed38 PS |
123 | bool |
124 | netdev_is_pmd(const struct netdev *netdev) | |
125 | { | |
118c77b1 | 126 | return netdev->netdev_class->is_pmd; |
e4cfed38 PS |
127 | } |
128 | ||
77909859 | 129 | static void |
a4fdb0f3 | 130 | netdev_class_mutex_initialize(void) |
da695497 | 131 | OVS_EXCLUDED(netdev_class_mutex, netdev_mutex) |
064af421 | 132 | { |
86383816 | 133 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; |
8b61709d | 134 | |
86383816 | 135 | if (ovsthread_once_start(&once)) { |
da695497 | 136 | ovs_mutex_init_recursive(&netdev_class_mutex); |
a4fdb0f3 GS |
137 | ovsthread_once_done(&once); |
138 | } | |
139 | } | |
140 | ||
141 | static void | |
142 | netdev_initialize(void) | |
143 | OVS_EXCLUDED(netdev_class_mutex, netdev_mutex) | |
144 | { | |
145 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
146 | ||
147 | if (ovsthread_once_start(&once)) { | |
148 | netdev_class_mutex_initialize(); | |
da695497 | 149 | |
4b609110 | 150 | fatal_signal_add_hook(restore_all_flags, NULL, NULL, true); |
c060c4cf | 151 | netdev_vport_patch_register(); |
064af421 | 152 | |
2f51a7eb | 153 | #ifdef __linux__ |
2b9d6589 | 154 | netdev_register_provider(&netdev_linux_class); |
c3827f61 | 155 | netdev_register_provider(&netdev_internal_class); |
2b9d6589 | 156 | netdev_register_provider(&netdev_tap_class); |
c060c4cf | 157 | netdev_vport_tunnel_register(); |
f6eb6b20 | 158 | #endif |
666afb55 | 159 | #if defined(__FreeBSD__) || defined(__NetBSD__) |
f6eb6b20 GL |
160 | netdev_register_provider(&netdev_tap_class); |
161 | netdev_register_provider(&netdev_bsd_class); | |
078eedf4 NR |
162 | #endif |
163 | #ifdef _WIN32 | |
164 | netdev_register_provider(&netdev_windows_class); | |
165 | netdev_register_provider(&netdev_internal_class); | |
166 | netdev_vport_tunnel_register(); | |
2b9d6589 | 167 | #endif |
8a9562d2 | 168 | netdev_dpdk_register(); |
86383816 BP |
169 | |
170 | ovsthread_once_done(&once); | |
064af421 | 171 | } |
064af421 BP |
172 | } |
173 | ||
8b61709d BP |
174 | /* Performs periodic work needed by all the various kinds of netdevs. |
175 | * | |
176 | * If your program opens any netdevs, it must call this function within its | |
177 | * main poll loop. */ | |
178 | void | |
179 | netdev_run(void) | |
da695497 | 180 | OVS_EXCLUDED(netdev_class_mutex, netdev_mutex) |
064af421 | 181 | { |
86383816 BP |
182 | struct netdev_registered_class *rc; |
183 | ||
aaea735b | 184 | netdev_initialize(); |
da695497 | 185 | ovs_mutex_lock(&netdev_class_mutex); |
86383816 | 186 | HMAP_FOR_EACH (rc, hmap_node, &netdev_classes) { |
3fd6ef29 EJ |
187 | if (rc->class->run) { |
188 | rc->class->run(); | |
189 | } | |
064af421 | 190 | } |
da695497 | 191 | ovs_mutex_unlock(&netdev_class_mutex); |
064af421 BP |
192 | } |
193 | ||
8b61709d BP |
194 | /* Arranges for poll_block() to wake up when netdev_run() needs to be called. |
195 | * | |
196 | * If your program opens any netdevs, it must call this function within its | |
197 | * main poll loop. */ | |
198 | void | |
199 | netdev_wait(void) | |
da695497 | 200 | OVS_EXCLUDED(netdev_class_mutex, netdev_mutex) |
064af421 | 201 | { |
86383816 BP |
202 | struct netdev_registered_class *rc; |
203 | ||
da695497 | 204 | ovs_mutex_lock(&netdev_class_mutex); |
86383816 | 205 | HMAP_FOR_EACH (rc, hmap_node, &netdev_classes) { |
3fd6ef29 EJ |
206 | if (rc->class->wait) { |
207 | rc->class->wait(); | |
208 | } | |
86383816 | 209 | } |
da695497 | 210 | ovs_mutex_unlock(&netdev_class_mutex); |
86383816 BP |
211 | } |
212 | ||
213 | static struct netdev_registered_class * | |
214 | netdev_lookup_class(const char *type) | |
da695497 | 215 | OVS_REQ_RDLOCK(netdev_class_mutex) |
86383816 BP |
216 | { |
217 | struct netdev_registered_class *rc; | |
218 | ||
219 | HMAP_FOR_EACH_WITH_HASH (rc, hmap_node, hash_string(type, 0), | |
220 | &netdev_classes) { | |
221 | if (!strcmp(type, rc->class->type)) { | |
222 | return rc; | |
8b61709d | 223 | } |
064af421 | 224 | } |
86383816 | 225 | return NULL; |
064af421 BP |
226 | } |
227 | ||
77909859 JG |
228 | /* Initializes and registers a new netdev provider. After successful |
229 | * registration, new netdevs of that type can be opened using netdev_open(). */ | |
230 | int | |
231 | netdev_register_provider(const struct netdev_class *new_class) | |
da695497 | 232 | OVS_EXCLUDED(netdev_class_mutex, netdev_mutex) |
77909859 | 233 | { |
86383816 BP |
234 | int error; |
235 | ||
a4fdb0f3 | 236 | netdev_class_mutex_initialize(); |
da695497 | 237 | ovs_mutex_lock(&netdev_class_mutex); |
86383816 | 238 | if (netdev_lookup_class(new_class->type)) { |
77909859 JG |
239 | VLOG_WARN("attempted to register duplicate netdev provider: %s", |
240 | new_class->type); | |
86383816 BP |
241 | error = EEXIST; |
242 | } else { | |
243 | error = new_class->init ? new_class->init() : 0; | |
244 | if (!error) { | |
245 | struct netdev_registered_class *rc; | |
246 | ||
247 | rc = xmalloc(sizeof *rc); | |
248 | hmap_insert(&netdev_classes, &rc->hmap_node, | |
249 | hash_string(new_class->type, 0)); | |
250 | rc->class = new_class; | |
fd0318be | 251 | rc->ref_cnt = 0; |
86383816 | 252 | } else { |
77909859 | 253 | VLOG_ERR("failed to initialize %s network device class: %s", |
10a89ef0 | 254 | new_class->type, ovs_strerror(error)); |
77909859 JG |
255 | } |
256 | } | |
da695497 | 257 | ovs_mutex_unlock(&netdev_class_mutex); |
77909859 | 258 | |
86383816 | 259 | return error; |
77909859 JG |
260 | } |
261 | ||
262 | /* Unregisters a netdev provider. 'type' must have been previously | |
263 | * registered and not currently be in use by any netdevs. After unregistration | |
264 | * new netdevs of that type cannot be opened using netdev_open(). */ | |
265 | int | |
266 | netdev_unregister_provider(const char *type) | |
da695497 | 267 | OVS_EXCLUDED(netdev_class_mutex, netdev_mutex) |
77909859 | 268 | { |
86383816 BP |
269 | struct netdev_registered_class *rc; |
270 | int error; | |
77909859 | 271 | |
7a82d305 BP |
272 | netdev_initialize(); |
273 | ||
da695497 | 274 | ovs_mutex_lock(&netdev_class_mutex); |
86383816 BP |
275 | rc = netdev_lookup_class(type); |
276 | if (!rc) { | |
77909859 JG |
277 | VLOG_WARN("attempted to unregister a netdev provider that is not " |
278 | "registered: %s", type); | |
86383816 BP |
279 | error = EAFNOSUPPORT; |
280 | } else { | |
fd0318be | 281 | if (!rc->ref_cnt) { |
86383816 BP |
282 | hmap_remove(&netdev_classes, &rc->hmap_node); |
283 | free(rc); | |
284 | error = 0; | |
285 | } else { | |
77909859 JG |
286 | VLOG_WARN("attempted to unregister in use netdev provider: %s", |
287 | type); | |
86383816 | 288 | error = EBUSY; |
77909859 JG |
289 | } |
290 | } | |
da695497 | 291 | ovs_mutex_unlock(&netdev_class_mutex); |
77909859 | 292 | |
86383816 | 293 | return error; |
c3827f61 BP |
294 | } |
295 | ||
77909859 | 296 | /* Clears 'types' and enumerates the types of all currently registered netdev |
19993ef3 | 297 | * providers into it. The caller must first initialize the sset. */ |
77909859 | 298 | void |
19993ef3 | 299 | netdev_enumerate_types(struct sset *types) |
86383816 | 300 | OVS_EXCLUDED(netdev_mutex) |
77909859 | 301 | { |
86383816 | 302 | struct netdev_registered_class *rc; |
77909859 JG |
303 | |
304 | netdev_initialize(); | |
19993ef3 | 305 | sset_clear(types); |
77909859 | 306 | |
da695497 | 307 | ovs_mutex_lock(&netdev_class_mutex); |
86383816 BP |
308 | HMAP_FOR_EACH (rc, hmap_node, &netdev_classes) { |
309 | sset_add(types, rc->class->type); | |
77909859 | 310 | } |
da695497 | 311 | ovs_mutex_unlock(&netdev_class_mutex); |
77909859 JG |
312 | } |
313 | ||
94a53842 AW |
314 | /* Check that the network device name is not the same as any of the registered |
315 | * vport providers' dpif_port name (dpif_port is NULL if the vport provider | |
316 | * does not define it) or the datapath internal port name (e.g. ovs-system). | |
317 | * | |
318 | * Returns true if there is a name conflict, false otherwise. */ | |
319 | bool | |
320 | netdev_is_reserved_name(const char *name) | |
86383816 | 321 | OVS_EXCLUDED(netdev_mutex) |
94a53842 | 322 | { |
86383816 | 323 | struct netdev_registered_class *rc; |
94a53842 AW |
324 | |
325 | netdev_initialize(); | |
86383816 | 326 | |
da695497 | 327 | ovs_mutex_lock(&netdev_class_mutex); |
86383816 BP |
328 | HMAP_FOR_EACH (rc, hmap_node, &netdev_classes) { |
329 | const char *dpif_port = netdev_vport_class_get_dpif_port(rc->class); | |
a5d4fadd | 330 | if (dpif_port && !strncmp(name, dpif_port, strlen(dpif_port))) { |
da695497 | 331 | ovs_mutex_unlock(&netdev_class_mutex); |
94a53842 AW |
332 | return true; |
333 | } | |
334 | } | |
da695497 | 335 | ovs_mutex_unlock(&netdev_class_mutex); |
94a53842 AW |
336 | |
337 | if (!strncmp(name, "ovs-", 4)) { | |
338 | struct sset types; | |
339 | const char *type; | |
340 | ||
341 | sset_init(&types); | |
342 | dp_enumerate_types(&types); | |
343 | SSET_FOR_EACH (type, &types) { | |
344 | if (!strcmp(name+4, type)) { | |
345 | sset_destroy(&types); | |
346 | return true; | |
347 | } | |
348 | } | |
349 | sset_destroy(&types); | |
350 | } | |
351 | ||
352 | return false; | |
353 | } | |
354 | ||
18812dff BP |
355 | /* Opens the network device named 'name' (e.g. "eth0") of the specified 'type' |
356 | * (e.g. "system") and returns zero if successful, otherwise a positive errno | |
357 | * value. On success, sets '*netdevp' to the new network device, otherwise to | |
358 | * null. | |
064af421 | 359 | * |
de5cdb90 BP |
360 | * Some network devices may need to be configured (with netdev_set_config()) |
361 | * before they can be used. */ | |
064af421 | 362 | int |
18812dff | 363 | netdev_open(const char *name, const char *type, struct netdev **netdevp) |
86383816 | 364 | OVS_EXCLUDED(netdev_mutex) |
064af421 | 365 | { |
b5d57fc8 | 366 | struct netdev *netdev; |
064af421 | 367 | int error; |
064af421 | 368 | |
559843ed | 369 | netdev_initialize(); |
6c88d577 | 370 | |
da695497 | 371 | ovs_mutex_lock(&netdev_class_mutex); |
86383816 | 372 | ovs_mutex_lock(&netdev_mutex); |
b5d57fc8 BP |
373 | netdev = shash_find_data(&netdev_shash, name); |
374 | if (!netdev) { | |
86383816 | 375 | struct netdev_registered_class *rc; |
c3827f61 | 376 | |
86383816 BP |
377 | rc = netdev_lookup_class(type && type[0] ? type : "system"); |
378 | if (rc) { | |
379 | netdev = rc->class->alloc(); | |
9dc63482 BP |
380 | if (netdev) { |
381 | memset(netdev, 0, sizeof *netdev); | |
86383816 | 382 | netdev->netdev_class = rc->class; |
9dc63482 | 383 | netdev->name = xstrdup(name); |
3e912ffc | 384 | netdev->change_seq = 1; |
9dc63482 | 385 | netdev->node = shash_add(&netdev_shash, name, netdev); |
55c955bd | 386 | |
f00fa8cb AW |
387 | /* By default enable one tx and rx queue per netdev. */ |
388 | netdev->n_txq = netdev->netdev_class->send ? 1 : 0; | |
389 | netdev->n_rxq = netdev->netdev_class->rxq_alloc ? 1 : 0; | |
a14b8947 | 390 | netdev->requested_n_rxq = netdev->n_rxq; |
f00fa8cb | 391 | |
417e7e66 | 392 | ovs_list_init(&netdev->saved_flags_list); |
9dc63482 | 393 | |
86383816 BP |
394 | error = rc->class->construct(netdev); |
395 | if (!error) { | |
fd0318be | 396 | rc->ref_cnt++; |
3e912ffc | 397 | netdev_change_seq_changed(netdev); |
86383816 | 398 | } else { |
d72e22c8 | 399 | free(netdev->name); |
417e7e66 | 400 | ovs_assert(ovs_list_is_empty(&netdev->saved_flags_list)); |
d72e22c8 | 401 | shash_delete(&netdev_shash, netdev->node); |
86383816 | 402 | rc->class->dealloc(netdev); |
9dc63482 BP |
403 | } |
404 | } else { | |
405 | error = ENOMEM; | |
406 | } | |
407 | } else { | |
c3827f61 | 408 | VLOG_WARN("could not create netdev %s of unknown type %s", |
18812dff | 409 | name, type); |
9dc63482 | 410 | error = EAFNOSUPPORT; |
149f577a | 411 | } |
9dc63482 BP |
412 | } else { |
413 | error = 0; | |
6c88d577 | 414 | } |
064af421 | 415 | |
9dc63482 BP |
416 | if (!error) { |
417 | netdev->ref_cnt++; | |
418 | *netdevp = netdev; | |
419 | } else { | |
420 | *netdevp = NULL; | |
421 | } | |
ca94dda6 JS |
422 | ovs_mutex_unlock(&netdev_mutex); |
423 | ovs_mutex_unlock(&netdev_class_mutex); | |
424 | ||
9dc63482 | 425 | return error; |
064af421 BP |
426 | } |
427 | ||
e20ae811 EJ |
428 | /* Returns a reference to 'netdev_' for the caller to own. Returns null if |
429 | * 'netdev_' is null. */ | |
0bb0393a BP |
430 | struct netdev * |
431 | netdev_ref(const struct netdev *netdev_) | |
86383816 | 432 | OVS_EXCLUDED(netdev_mutex) |
0bb0393a BP |
433 | { |
434 | struct netdev *netdev = CONST_CAST(struct netdev *, netdev_); | |
435 | ||
e20ae811 | 436 | if (netdev) { |
86383816 | 437 | ovs_mutex_lock(&netdev_mutex); |
e20ae811 EJ |
438 | ovs_assert(netdev->ref_cnt > 0); |
439 | netdev->ref_cnt++; | |
86383816 | 440 | ovs_mutex_unlock(&netdev_mutex); |
e20ae811 | 441 | } |
0bb0393a BP |
442 | return netdev; |
443 | } | |
444 | ||
149f577a JG |
445 | /* Reconfigures the device 'netdev' with 'args'. 'args' may be empty |
446 | * or NULL if none are needed. */ | |
447 | int | |
bbe6109d | 448 | netdev_set_config(struct netdev *netdev, const struct smap *args, char **errp) |
86383816 | 449 | OVS_EXCLUDED(netdev_mutex) |
149f577a | 450 | { |
b5d57fc8 | 451 | if (netdev->netdev_class->set_config) { |
86383816 | 452 | const struct smap no_args = SMAP_INITIALIZER(&no_args); |
4f6b9934 BP |
453 | int error; |
454 | ||
455 | error = netdev->netdev_class->set_config(netdev, | |
456 | args ? args : &no_args); | |
457 | if (error) { | |
bbe6109d TG |
458 | VLOG_WARN_BUF(errp, "%s: could not set configuration (%s)", |
459 | netdev_get_name(netdev), ovs_strerror(error)); | |
4f6b9934 BP |
460 | } |
461 | return error; | |
79f1cbe9 | 462 | } else if (args && !smap_is_empty(args)) { |
bbe6109d TG |
463 | VLOG_WARN_BUF(errp, "%s: arguments provided to device that is not configurable", |
464 | netdev_get_name(netdev)); | |
149f577a | 465 | } |
149f577a JG |
466 | return 0; |
467 | } | |
468 | ||
de5cdb90 | 469 | /* Returns the current configuration for 'netdev' in 'args'. The caller must |
79f1cbe9 | 470 | * have already initialized 'args' with smap_init(). Returns 0 on success, in |
de5cdb90 BP |
471 | * which case 'args' will be filled with 'netdev''s configuration. On failure |
472 | * returns a positive errno value, in which case 'args' will be empty. | |
6d9e6eb4 | 473 | * |
de5cdb90 | 474 | * The caller owns 'args' and its contents and must eventually free them with |
79f1cbe9 | 475 | * smap_destroy(). */ |
de5cdb90 | 476 | int |
79f1cbe9 | 477 | netdev_get_config(const struct netdev *netdev, struct smap *args) |
86383816 | 478 | OVS_EXCLUDED(netdev_mutex) |
6d9e6eb4 | 479 | { |
de5cdb90 BP |
480 | int error; |
481 | ||
79f1cbe9 | 482 | smap_clear(args); |
b5d57fc8 BP |
483 | if (netdev->netdev_class->get_config) { |
484 | error = netdev->netdev_class->get_config(netdev, args); | |
de5cdb90 | 485 | if (error) { |
79f1cbe9 | 486 | smap_clear(args); |
de5cdb90 BP |
487 | } |
488 | } else { | |
489 | error = 0; | |
490 | } | |
491 | ||
492 | return error; | |
6d9e6eb4 BP |
493 | } |
494 | ||
f431bf7d EJ |
495 | const struct netdev_tunnel_config * |
496 | netdev_get_tunnel_config(const struct netdev *netdev) | |
86383816 | 497 | OVS_EXCLUDED(netdev_mutex) |
f431bf7d | 498 | { |
b5d57fc8 BP |
499 | if (netdev->netdev_class->get_tunnel_config) { |
500 | return netdev->netdev_class->get_tunnel_config(netdev); | |
f431bf7d EJ |
501 | } else { |
502 | return NULL; | |
503 | } | |
504 | } | |
505 | ||
7dec44fe AW |
506 | /* Returns the id of the numa node the 'netdev' is on. If the function |
507 | * is not implemented, returns NETDEV_NUMA_UNSPEC. */ | |
508 | int | |
509 | netdev_get_numa_id(const struct netdev *netdev) | |
510 | { | |
511 | if (netdev->netdev_class->get_numa_id) { | |
512 | return netdev->netdev_class->get_numa_id(netdev); | |
513 | } else { | |
514 | return NETDEV_NUMA_UNSPEC; | |
515 | } | |
516 | } | |
517 | ||
4b609110 | 518 | static void |
b5d57fc8 | 519 | netdev_unref(struct netdev *dev) |
86383816 | 520 | OVS_RELEASES(netdev_mutex) |
4b609110 BP |
521 | { |
522 | ovs_assert(dev->ref_cnt); | |
523 | if (!--dev->ref_cnt) { | |
86383816 BP |
524 | const struct netdev_class *class = dev->netdev_class; |
525 | struct netdev_registered_class *rc; | |
86383816 | 526 | |
9dc63482 BP |
527 | dev->netdev_class->destruct(dev); |
528 | ||
fe83f81d RW |
529 | if (dev->node) { |
530 | shash_delete(&netdev_shash, dev->node); | |
531 | } | |
9dc63482 BP |
532 | free(dev->name); |
533 | dev->netdev_class->dealloc(dev); | |
86383816 BP |
534 | ovs_mutex_unlock(&netdev_mutex); |
535 | ||
da695497 | 536 | ovs_mutex_lock(&netdev_class_mutex); |
86383816 | 537 | rc = netdev_lookup_class(class->type); |
fd0318be JR |
538 | ovs_assert(rc->ref_cnt > 0); |
539 | rc->ref_cnt--; | |
da695497 | 540 | ovs_mutex_unlock(&netdev_class_mutex); |
86383816 BP |
541 | } else { |
542 | ovs_mutex_unlock(&netdev_mutex); | |
4b609110 BP |
543 | } |
544 | } | |
545 | ||
064af421 BP |
546 | /* Closes and destroys 'netdev'. */ |
547 | void | |
548 | netdev_close(struct netdev *netdev) | |
86383816 | 549 | OVS_EXCLUDED(netdev_mutex) |
064af421 BP |
550 | { |
551 | if (netdev) { | |
86383816 | 552 | ovs_mutex_lock(&netdev_mutex); |
b5d57fc8 | 553 | netdev_unref(netdev); |
064af421 BP |
554 | } |
555 | } | |
556 | ||
fe83f81d RW |
557 | /* Removes 'netdev' from the global shash and unrefs 'netdev'. |
558 | * | |
559 | * This allows handler and revalidator threads to still retain references | |
560 | * to this netdev while the main thread changes interface configuration. | |
561 | * | |
562 | * This function should only be called by the main thread when closing | |
563 | * netdevs during user configuration changes. Otherwise, netdev_close should be | |
564 | * used to close netdevs. */ | |
565 | void | |
566 | netdev_remove(struct netdev *netdev) | |
567 | { | |
568 | if (netdev) { | |
569 | ovs_mutex_lock(&netdev_mutex); | |
570 | if (netdev->node) { | |
571 | shash_delete(&netdev_shash, netdev->node); | |
572 | netdev->node = NULL; | |
573 | netdev_change_seq_changed(netdev); | |
574 | } | |
575 | netdev_unref(netdev); | |
576 | } | |
577 | } | |
578 | ||
a75531e5 BP |
579 | /* Parses 'netdev_name_', which is of the form [type@]name into its component |
580 | * pieces. 'name' and 'type' must be freed by the caller. */ | |
581 | void | |
582 | netdev_parse_name(const char *netdev_name_, char **name, char **type) | |
583 | { | |
584 | char *netdev_name = xstrdup(netdev_name_); | |
585 | char *separator; | |
586 | ||
587 | separator = strchr(netdev_name, '@'); | |
588 | if (separator) { | |
589 | *separator = '\0'; | |
590 | *type = netdev_name; | |
591 | *name = xstrdup(separator + 1); | |
592 | } else { | |
593 | *name = netdev_name; | |
594 | *type = xstrdup("system"); | |
595 | } | |
596 | } | |
597 | ||
f7791740 PS |
598 | /* Attempts to open a netdev_rxq handle for obtaining packets received on |
599 | * 'netdev'. On success, returns 0 and stores a nonnull 'netdev_rxq *' into | |
b73c8518 SH |
600 | * '*rxp'. On failure, returns a positive errno value and stores NULL into |
601 | * '*rxp'. | |
602 | * | |
603 | * Some kinds of network devices might not support receiving packets. This | |
604 | * function returns EOPNOTSUPP in that case.*/ | |
7b6b0ef4 | 605 | int |
55c955bd | 606 | netdev_rxq_open(struct netdev *netdev, struct netdev_rxq **rxp, int id) |
86383816 | 607 | OVS_EXCLUDED(netdev_mutex) |
7b6b0ef4 | 608 | { |
796223f5 | 609 | int error; |
7b6b0ef4 | 610 | |
55c955bd | 611 | if (netdev->netdev_class->rxq_alloc && id < netdev->n_rxq) { |
f7791740 | 612 | struct netdev_rxq *rx = netdev->netdev_class->rxq_alloc(); |
9dc63482 BP |
613 | if (rx) { |
614 | rx->netdev = netdev; | |
55c955bd | 615 | rx->queue_id = id; |
f7791740 | 616 | error = netdev->netdev_class->rxq_construct(rx); |
9dc63482 | 617 | if (!error) { |
a17ceb1b | 618 | netdev_ref(netdev); |
9dc63482 BP |
619 | *rxp = rx; |
620 | return 0; | |
621 | } | |
f7791740 | 622 | netdev->netdev_class->rxq_dealloc(rx); |
9dc63482 BP |
623 | } else { |
624 | error = ENOMEM; | |
625 | } | |
796223f5 | 626 | } else { |
9dc63482 | 627 | error = EOPNOTSUPP; |
796223f5 | 628 | } |
9dc63482 BP |
629 | |
630 | *rxp = NULL; | |
796223f5 BP |
631 | return error; |
632 | } | |
633 | ||
b73c8518 | 634 | /* Closes 'rx'. */ |
796223f5 | 635 | void |
f7791740 | 636 | netdev_rxq_close(struct netdev_rxq *rx) |
86383816 | 637 | OVS_EXCLUDED(netdev_mutex) |
796223f5 BP |
638 | { |
639 | if (rx) { | |
9dc63482 | 640 | struct netdev *netdev = rx->netdev; |
f7791740 PS |
641 | netdev->netdev_class->rxq_destruct(rx); |
642 | netdev->netdev_class->rxq_dealloc(rx); | |
9dc63482 | 643 | netdev_close(netdev); |
796223f5 | 644 | } |
7b6b0ef4 BP |
645 | } |
646 | ||
e175dc83 BP |
647 | /* Attempts to receive a batch of packets from 'rx'. 'pkts' should point to |
648 | * the beginning of an array of MAX_RX_BATCH pointers to dp_packet. If | |
649 | * successful, this function stores pointers to up to MAX_RX_BATCH dp_packets | |
650 | * into the array, transferring ownership of the packets to the caller, stores | |
651 | * the number of received packets into '*cnt', and returns 0. | |
b73c8518 | 652 | * |
e175dc83 BP |
653 | * The implementation does not necessarily initialize any non-data members of |
654 | * 'pkts'. That is, the caller must initialize layer pointers and metadata | |
655 | * itself, if desired, e.g. with pkt_metadata_init() and miniflow_extract(). | |
b73c8518 | 656 | * |
e175dc83 BP |
657 | * Returns EAGAIN immediately if no packet is ready to be received or another |
658 | * positive errno value if an error was encountered. */ | |
064af421 | 659 | int |
e175dc83 | 660 | netdev_rxq_recv(struct netdev_rxq *rx, struct dp_packet **pkts, int *cnt) |
064af421 | 661 | { |
8b61709d | 662 | int retval; |
064af421 | 663 | |
e175dc83 | 664 | retval = rx->netdev->netdev_class->rxq_recv(rx, pkts, cnt); |
bfd3367b | 665 | if (!retval) { |
064af421 | 666 | COVERAGE_INC(netdev_received); |
e175dc83 BP |
667 | } else { |
668 | *cnt = 0; | |
064af421 | 669 | } |
df1e5a3b | 670 | return retval; |
064af421 BP |
671 | } |
672 | ||
b73c8518 SH |
673 | /* Arranges for poll_block() to wake up when a packet is ready to be received |
674 | * on 'rx'. */ | |
064af421 | 675 | void |
f7791740 | 676 | netdev_rxq_wait(struct netdev_rxq *rx) |
064af421 | 677 | { |
f7791740 | 678 | rx->netdev->netdev_class->rxq_wait(rx); |
064af421 BP |
679 | } |
680 | ||
b73c8518 | 681 | /* Discards any packets ready to be received on 'rx'. */ |
064af421 | 682 | int |
f7791740 | 683 | netdev_rxq_drain(struct netdev_rxq *rx) |
064af421 | 684 | { |
f7791740 PS |
685 | return (rx->netdev->netdev_class->rxq_drain |
686 | ? rx->netdev->netdev_class->rxq_drain(rx) | |
9dc63482 | 687 | : 0); |
064af421 BP |
688 | } |
689 | ||
5496878c AW |
690 | /* Configures the number of tx queues and rx queues of 'netdev'. |
691 | * Return 0 if successful, otherwise a positive errno value. | |
692 | * | |
a0cb2d66 DDP |
693 | * 'n_rxq' specifies the maximum number of receive queues to create. |
694 | * The netdev provider might choose to create less (e.g. if the hardware | |
695 | * supports only a smaller number). The caller can check how many have been | |
696 | * actually created by calling 'netdev_n_rxq()' | |
697 | * | |
698 | * 'n_txq' specifies the exact number of transmission queues to create. | |
699 | * If this function returns successfully, the caller can make 'n_txq' | |
700 | * concurrent calls to netdev_send() (each one with a different 'qid' in the | |
701 | * range [0..'n_txq'-1]). | |
702 | * | |
5496878c AW |
703 | * On error, the tx queue and rx queue configuration is indeterminant. |
704 | * Caller should make decision on whether to restore the previous or | |
705 | * the default configuration. Also, caller must make sure there is no | |
706 | * other thread accessing the queues at the same time. */ | |
707 | int | |
708 | netdev_set_multiq(struct netdev *netdev, unsigned int n_txq, | |
709 | unsigned int n_rxq) | |
710 | { | |
711 | int error; | |
712 | ||
713 | error = (netdev->netdev_class->set_multiq | |
714 | ? netdev->netdev_class->set_multiq(netdev, | |
715 | MAX(n_txq, 1), | |
716 | MAX(n_rxq, 1)) | |
717 | : EOPNOTSUPP); | |
718 | ||
f6d0d4b3 | 719 | if (error && error != EOPNOTSUPP) { |
5496878c AW |
720 | VLOG_DBG_RL(&rl, "failed to set tx/rx queue for network device %s:" |
721 | "%s", netdev_get_name(netdev), ovs_strerror(error)); | |
722 | } | |
723 | ||
724 | return error; | |
725 | } | |
726 | ||
f4fd623c DDP |
727 | /* Sends 'buffers' on 'netdev'. Returns 0 if successful (for every packet), |
728 | * otherwise a positive errno value. Returns EAGAIN without blocking if | |
729 | * at least one the packets cannot be queued immediately. Returns EMSGSIZE | |
730 | * if a partial packet was transmitted or if a packet is too big or too small | |
731 | * to transmit on the device. | |
732 | * | |
733 | * If the function returns a non-zero value, some of the packets might have | |
734 | * been sent anyway. | |
064af421 | 735 | * |
7dbd520e BP |
736 | * If 'may_steal' is false, the caller retains ownership of all the packets. |
737 | * If 'may_steal' is true, the caller transfers ownership of all the packets | |
738 | * to the network device, regardless of success. | |
064af421 | 739 | * |
f00fa8cb AW |
740 | * The network device is expected to maintain one or more packet |
741 | * transmission queues, so that the caller does not ordinarily have to | |
742 | * do additional queuing of packets. 'qid' specifies the queue to use | |
743 | * and can be ignored if the implementation does not support multiple | |
744 | * queues. | |
1ac98180 BP |
745 | * |
746 | * Some network devices may not implement support for this function. In such | |
747 | * cases this function will always return EOPNOTSUPP. */ | |
064af421 | 748 | int |
e14deea0 | 749 | netdev_send(struct netdev *netdev, int qid, struct dp_packet **buffers, |
f00fa8cb | 750 | int cnt, bool may_steal) |
064af421 | 751 | { |
7dbd520e BP |
752 | if (!netdev->netdev_class->send) { |
753 | if (may_steal) { | |
754 | for (int i = 0; i < cnt; i++) { | |
755 | dp_packet_delete(buffers[i]); | |
756 | } | |
757 | } | |
758 | return EOPNOTSUPP; | |
759 | } | |
1ac98180 | 760 | |
7dbd520e BP |
761 | int error = netdev->netdev_class->send(netdev, qid, buffers, cnt, |
762 | may_steal); | |
8b61709d | 763 | if (!error) { |
064af421 | 764 | COVERAGE_INC(netdev_sent); |
064af421 | 765 | } |
8b61709d | 766 | return error; |
064af421 BP |
767 | } |
768 | ||
a36de779 | 769 | int |
e14deea0 | 770 | netdev_pop_header(struct netdev *netdev, struct dp_packet **buffers, int cnt) |
a36de779 | 771 | { |
d625fbd1 JG |
772 | int i; |
773 | ||
774 | if (!netdev->netdev_class->pop_header) { | |
775 | return EOPNOTSUPP; | |
776 | } | |
777 | ||
778 | for (i = 0; i < cnt; i++) { | |
779 | int err; | |
780 | ||
781 | err = netdev->netdev_class->pop_header(buffers[i]); | |
782 | if (err) { | |
e62d903b | 783 | dp_packet_clear(buffers[i]); |
d625fbd1 JG |
784 | } |
785 | } | |
786 | ||
787 | return 0; | |
a36de779 PS |
788 | } |
789 | ||
790 | int | |
c876a4bb RL |
791 | netdev_build_header(const struct netdev *netdev, struct ovs_action_push_tnl *data, |
792 | const struct flow *tnl_flow) | |
a36de779 PS |
793 | { |
794 | if (netdev->netdev_class->build_header) { | |
c876a4bb | 795 | return netdev->netdev_class->build_header(netdev, data, tnl_flow); |
a36de779 PS |
796 | } |
797 | return EOPNOTSUPP; | |
798 | } | |
799 | ||
800 | int | |
801 | netdev_push_header(const struct netdev *netdev, | |
e14deea0 | 802 | struct dp_packet **buffers, int cnt, |
a36de779 PS |
803 | const struct ovs_action_push_tnl *data) |
804 | { | |
d625fbd1 JG |
805 | int i; |
806 | ||
807 | if (!netdev->netdev_class->push_header) { | |
a36de779 PS |
808 | return -EINVAL; |
809 | } | |
d625fbd1 JG |
810 | |
811 | for (i = 0; i < cnt; i++) { | |
812 | netdev->netdev_class->push_header(buffers[i], data); | |
35303d71 | 813 | pkt_metadata_init(&buffers[i]->md, u32_to_odp(data->out_port)); |
d625fbd1 JG |
814 | } |
815 | ||
816 | return 0; | |
a36de779 PS |
817 | } |
818 | ||
064af421 BP |
819 | /* Registers with the poll loop to wake up from the next call to poll_block() |
820 | * when the packet transmission queue has sufficient room to transmit a packet | |
821 | * with netdev_send(). | |
822 | * | |
f00fa8cb AW |
823 | * The network device is expected to maintain one or more packet |
824 | * transmission queues, so that the caller does not ordinarily have to | |
825 | * do additional queuing of packets. 'qid' specifies the queue to use | |
826 | * and can be ignored if the implementation does not support multiple | |
827 | * queues. */ | |
064af421 | 828 | void |
f00fa8cb | 829 | netdev_send_wait(struct netdev *netdev, int qid) |
064af421 | 830 | { |
b5d57fc8 | 831 | if (netdev->netdev_class->send_wait) { |
f00fa8cb | 832 | netdev->netdev_class->send_wait(netdev, qid); |
1ac98180 | 833 | } |
064af421 BP |
834 | } |
835 | ||
836 | /* Attempts to set 'netdev''s MAC address to 'mac'. Returns 0 if successful, | |
837 | * otherwise a positive errno value. */ | |
838 | int | |
74ff3298 | 839 | netdev_set_etheraddr(struct netdev *netdev, const struct eth_addr mac) |
064af421 | 840 | { |
b5d57fc8 | 841 | return netdev->netdev_class->set_etheraddr(netdev, mac); |
064af421 BP |
842 | } |
843 | ||
80992a35 BP |
844 | /* Retrieves 'netdev''s MAC address. If successful, returns 0 and copies the |
845 | * the MAC address into 'mac'. On failure, returns a positive errno value and | |
846 | * clears 'mac' to all-zeros. */ | |
847 | int | |
74ff3298 | 848 | netdev_get_etheraddr(const struct netdev *netdev, struct eth_addr *mac) |
064af421 | 849 | { |
b5d57fc8 | 850 | return netdev->netdev_class->get_etheraddr(netdev, mac); |
064af421 BP |
851 | } |
852 | ||
853 | /* Returns the name of the network device that 'netdev' represents, | |
854 | * e.g. "eth0". The caller must not modify or free the returned string. */ | |
855 | const char * | |
856 | netdev_get_name(const struct netdev *netdev) | |
857 | { | |
b5d57fc8 | 858 | return netdev->name; |
064af421 BP |
859 | } |
860 | ||
3d222126 BP |
861 | /* Retrieves the MTU of 'netdev'. The MTU is the maximum size of transmitted |
862 | * (and received) packets, in bytes, not including the hardware header; thus, | |
863 | * this is typically 1500 bytes for Ethernet devices. | |
864 | * | |
9b020780 PS |
865 | * If successful, returns 0 and stores the MTU size in '*mtup'. Returns |
866 | * EOPNOTSUPP if 'netdev' does not have an MTU (as e.g. some tunnels do not). | |
14622f22 BP |
867 | * On other failure, returns a positive errno value. On failure, sets '*mtup' |
868 | * to 0. */ | |
064af421 | 869 | int |
3d222126 | 870 | netdev_get_mtu(const struct netdev *netdev, int *mtup) |
064af421 | 871 | { |
b5d57fc8 | 872 | const struct netdev_class *class = netdev->netdev_class; |
14622f22 BP |
873 | int error; |
874 | ||
875 | error = class->get_mtu ? class->get_mtu(netdev, mtup) : EOPNOTSUPP; | |
876 | if (error) { | |
877 | *mtup = 0; | |
878 | if (error != EOPNOTSUPP) { | |
90a6637d | 879 | VLOG_DBG_RL(&rl, "failed to retrieve MTU for network device %s: " |
10a89ef0 | 880 | "%s", netdev_get_name(netdev), ovs_strerror(error)); |
14622f22 | 881 | } |
8b61709d BP |
882 | } |
883 | return error; | |
064af421 BP |
884 | } |
885 | ||
9b020780 PS |
886 | /* Sets the MTU of 'netdev'. The MTU is the maximum size of transmitted |
887 | * (and received) packets, in bytes. | |
888 | * | |
889 | * If successful, returns 0. Returns EOPNOTSUPP if 'netdev' does not have an | |
890 | * MTU (as e.g. some tunnels do not). On other failure, returns a positive | |
891 | * errno value. */ | |
892 | int | |
893 | netdev_set_mtu(const struct netdev *netdev, int mtu) | |
894 | { | |
b5d57fc8 | 895 | const struct netdev_class *class = netdev->netdev_class; |
14622f22 | 896 | int error; |
9b020780 | 897 | |
14622f22 | 898 | error = class->set_mtu ? class->set_mtu(netdev, mtu) : EOPNOTSUPP; |
9b020780 | 899 | if (error && error != EOPNOTSUPP) { |
90a6637d | 900 | VLOG_DBG_RL(&rl, "failed to set MTU for network device %s: %s", |
10a89ef0 | 901 | netdev_get_name(netdev), ovs_strerror(error)); |
9b020780 PS |
902 | } |
903 | ||
904 | return error; | |
905 | } | |
906 | ||
9ab3d9a3 BP |
907 | /* Returns the ifindex of 'netdev', if successful, as a positive number. On |
908 | * failure, returns a negative errno value. | |
909 | * | |
910 | * The desired semantics of the ifindex value are a combination of those | |
911 | * specified by POSIX for if_nametoindex() and by SNMP for ifIndex. An ifindex | |
912 | * value should be unique within a host and remain stable at least until | |
913 | * reboot. SNMP says an ifindex "ranges between 1 and the value of ifNumber" | |
914 | * but many systems do not follow this rule anyhow. | |
4c0f1780 JG |
915 | * |
916 | * Some network devices may not implement support for this function. In such | |
917 | * cases this function will always return -EOPNOTSUPP. | |
9ab3d9a3 BP |
918 | */ |
919 | int | |
920 | netdev_get_ifindex(const struct netdev *netdev) | |
921 | { | |
4c0f1780 JG |
922 | int (*get_ifindex)(const struct netdev *); |
923 | ||
b5d57fc8 | 924 | get_ifindex = netdev->netdev_class->get_ifindex; |
4c0f1780 JG |
925 | |
926 | return get_ifindex ? get_ifindex(netdev) : -EOPNOTSUPP; | |
9ab3d9a3 BP |
927 | } |
928 | ||
064af421 BP |
929 | /* Stores the features supported by 'netdev' into each of '*current', |
930 | * '*advertised', '*supported', and '*peer' that are non-null. Each value is a | |
931 | * bitmap of "enum ofp_port_features" bits, in host byte order. Returns 0 if | |
932 | * successful, otherwise a positive errno value. On failure, all of the | |
4c0f1780 JG |
933 | * passed-in values are set to 0. |
934 | * | |
935 | * Some network devices may not implement support for this function. In such | |
c1fdab01 | 936 | * cases this function will always return EOPNOTSUPP. */ |
064af421 | 937 | int |
6f2f5cce | 938 | netdev_get_features(const struct netdev *netdev, |
6c038611 BP |
939 | enum netdev_features *current, |
940 | enum netdev_features *advertised, | |
941 | enum netdev_features *supported, | |
942 | enum netdev_features *peer) | |
064af421 | 943 | { |
6f2f5cce | 944 | int (*get_features)(const struct netdev *netdev, |
6c038611 BP |
945 | enum netdev_features *current, |
946 | enum netdev_features *advertised, | |
947 | enum netdev_features *supported, | |
948 | enum netdev_features *peer); | |
949 | enum netdev_features dummy[4]; | |
7671589a BP |
950 | int error; |
951 | ||
952 | if (!current) { | |
953 | current = &dummy[0]; | |
954 | } | |
955 | if (!advertised) { | |
956 | advertised = &dummy[1]; | |
957 | } | |
958 | if (!supported) { | |
959 | supported = &dummy[2]; | |
960 | } | |
961 | if (!peer) { | |
962 | peer = &dummy[3]; | |
963 | } | |
964 | ||
b5d57fc8 | 965 | get_features = netdev->netdev_class->get_features; |
4c0f1780 | 966 | error = get_features |
a00ca915 EJ |
967 | ? get_features(netdev, current, advertised, supported, |
968 | peer) | |
4c0f1780 | 969 | : EOPNOTSUPP; |
7671589a BP |
970 | if (error) { |
971 | *current = *advertised = *supported = *peer = 0; | |
972 | } | |
973 | return error; | |
064af421 BP |
974 | } |
975 | ||
6c038611 BP |
976 | /* Returns the maximum speed of a network connection that has the NETDEV_F_* |
977 | * bits in 'features', in bits per second. If no bits that indicate a speed | |
d02a5f8e | 978 | * are set in 'features', returns 'default_bps'. */ |
622ee2cf | 979 | uint64_t |
d02a5f8e BP |
980 | netdev_features_to_bps(enum netdev_features features, |
981 | uint64_t default_bps) | |
622ee2cf BP |
982 | { |
983 | enum { | |
6c038611 BP |
984 | F_1000000MB = NETDEV_F_1TB_FD, |
985 | F_100000MB = NETDEV_F_100GB_FD, | |
986 | F_40000MB = NETDEV_F_40GB_FD, | |
987 | F_10000MB = NETDEV_F_10GB_FD, | |
988 | F_1000MB = NETDEV_F_1GB_HD | NETDEV_F_1GB_FD, | |
989 | F_100MB = NETDEV_F_100MB_HD | NETDEV_F_100MB_FD, | |
990 | F_10MB = NETDEV_F_10MB_HD | NETDEV_F_10MB_FD | |
622ee2cf BP |
991 | }; |
992 | ||
6c038611 BP |
993 | return ( features & F_1000000MB ? UINT64_C(1000000000000) |
994 | : features & F_100000MB ? UINT64_C(100000000000) | |
995 | : features & F_40000MB ? UINT64_C(40000000000) | |
996 | : features & F_10000MB ? UINT64_C(10000000000) | |
997 | : features & F_1000MB ? UINT64_C(1000000000) | |
998 | : features & F_100MB ? UINT64_C(100000000) | |
999 | : features & F_10MB ? UINT64_C(10000000) | |
d02a5f8e | 1000 | : default_bps); |
622ee2cf BP |
1001 | } |
1002 | ||
6c038611 BP |
1003 | /* Returns true if any of the NETDEV_F_* bits that indicate a full-duplex link |
1004 | * are set in 'features', otherwise false. */ | |
622ee2cf | 1005 | bool |
6c038611 | 1006 | netdev_features_is_full_duplex(enum netdev_features features) |
622ee2cf | 1007 | { |
6c038611 BP |
1008 | return (features & (NETDEV_F_10MB_FD | NETDEV_F_100MB_FD | NETDEV_F_1GB_FD |
1009 | | NETDEV_F_10GB_FD | NETDEV_F_40GB_FD | |
1010 | | NETDEV_F_100GB_FD | NETDEV_F_1TB_FD)) != 0; | |
622ee2cf BP |
1011 | } |
1012 | ||
8b61709d BP |
1013 | /* Set the features advertised by 'netdev' to 'advertise'. Returns 0 if |
1014 | * successful, otherwise a positive errno value. */ | |
064af421 | 1015 | int |
6c038611 BP |
1016 | netdev_set_advertisements(struct netdev *netdev, |
1017 | enum netdev_features advertise) | |
064af421 | 1018 | { |
b5d57fc8 BP |
1019 | return (netdev->netdev_class->set_advertisements |
1020 | ? netdev->netdev_class->set_advertisements( | |
a4af0040 | 1021 | netdev, advertise) |
8b61709d | 1022 | : EOPNOTSUPP); |
064af421 BP |
1023 | } |
1024 | ||
064af421 BP |
1025 | /* Assigns 'addr' as 'netdev''s IPv4 address and 'mask' as its netmask. If |
1026 | * 'addr' is INADDR_ANY, 'netdev''s IPv4 address is cleared. Returns a | |
1027 | * positive errno value. */ | |
1028 | int | |
1029 | netdev_set_in4(struct netdev *netdev, struct in_addr addr, struct in_addr mask) | |
1030 | { | |
b5d57fc8 BP |
1031 | return (netdev->netdev_class->set_in4 |
1032 | ? netdev->netdev_class->set_in4(netdev, addr, mask) | |
8b61709d | 1033 | : EOPNOTSUPP); |
064af421 BP |
1034 | } |
1035 | ||
733adf2a LG |
1036 | /* Obtains ad IPv4 address from device name and save the address in |
1037 | * in4. Returns 0 if successful, otherwise a positive errno value. | |
1038 | */ | |
1039 | int | |
1040 | netdev_get_in4_by_name(const char *device_name, struct in_addr *in4) | |
1041 | { | |
6b6e1329 PS |
1042 | struct in6_addr *mask, *addr6; |
1043 | int err, n_in6, i; | |
1044 | struct netdev *dev; | |
733adf2a | 1045 | |
6b6e1329 PS |
1046 | err = netdev_open(device_name, NULL, &dev); |
1047 | if (err) { | |
1048 | return err; | |
733adf2a LG |
1049 | } |
1050 | ||
6b6e1329 PS |
1051 | err = netdev_get_addr_list(dev, &addr6, &mask, &n_in6); |
1052 | if (err) { | |
1053 | goto out; | |
1054 | } | |
1055 | ||
1056 | for (i = 0; i < n_in6; i++) { | |
1057 | if (IN6_IS_ADDR_V4MAPPED(&addr6[i])) { | |
1058 | in4->s_addr = in6_addr_get_mapped_ipv4(&addr6[i]); | |
1059 | goto out; | |
1060 | } | |
1061 | } | |
1062 | err = -ENOENT; | |
1063 | out: | |
1064 | free(addr6); | |
1065 | free(mask); | |
1066 | netdev_close(dev); | |
1067 | return err; | |
1068 | ||
733adf2a LG |
1069 | } |
1070 | ||
0efaf4b5 BP |
1071 | /* Adds 'router' as a default IP gateway for the TCP/IP stack that corresponds |
1072 | * to 'netdev'. */ | |
064af421 | 1073 | int |
8b61709d | 1074 | netdev_add_router(struct netdev *netdev, struct in_addr router) |
064af421 | 1075 | { |
064af421 | 1076 | COVERAGE_INC(netdev_add_router); |
b5d57fc8 BP |
1077 | return (netdev->netdev_class->add_router |
1078 | ? netdev->netdev_class->add_router(netdev, router) | |
8b61709d | 1079 | : EOPNOTSUPP); |
064af421 BP |
1080 | } |
1081 | ||
f1acd62b BP |
1082 | /* Looks up the next hop for 'host' for the TCP/IP stack that corresponds to |
1083 | * 'netdev'. If a route cannot not be determined, sets '*next_hop' to 0, | |
1084 | * '*netdev_name' to null, and returns a positive errno value. Otherwise, if a | |
1085 | * next hop is found, stores the next hop gateway's address (0 if 'host' is on | |
1086 | * a directly connected network) in '*next_hop' and a copy of the name of the | |
1087 | * device to reach 'host' in '*netdev_name', and returns 0. The caller is | |
1088 | * responsible for freeing '*netdev_name' (by calling free()). */ | |
1089 | int | |
1090 | netdev_get_next_hop(const struct netdev *netdev, | |
1091 | const struct in_addr *host, struct in_addr *next_hop, | |
1092 | char **netdev_name) | |
1093 | { | |
b5d57fc8 BP |
1094 | int error = (netdev->netdev_class->get_next_hop |
1095 | ? netdev->netdev_class->get_next_hop( | |
a4af0040 | 1096 | host, next_hop, netdev_name) |
f1acd62b | 1097 | : EOPNOTSUPP); |
064af421 | 1098 | if (error) { |
f1acd62b BP |
1099 | next_hop->s_addr = 0; |
1100 | *netdev_name = NULL; | |
064af421 BP |
1101 | } |
1102 | return error; | |
1103 | } | |
1104 | ||
79f1cbe9 | 1105 | /* Populates 'smap' with status information. |
ea763e0e | 1106 | * |
79f1cbe9 EJ |
1107 | * Populates 'smap' with 'netdev' specific status information. This |
1108 | * information may be used to populate the status column of the Interface table | |
1109 | * as defined in ovs-vswitchd.conf.db(5). */ | |
ea763e0e | 1110 | int |
275707c3 | 1111 | netdev_get_status(const struct netdev *netdev, struct smap *smap) |
ea83a2fc | 1112 | { |
b5d57fc8 BP |
1113 | return (netdev->netdev_class->get_status |
1114 | ? netdev->netdev_class->get_status(netdev, smap) | |
ea763e0e | 1115 | : EOPNOTSUPP); |
ea83a2fc EJ |
1116 | } |
1117 | ||
a8704b50 PS |
1118 | /* Returns all assigned IP address to 'netdev' and returns 0. |
1119 | * API allocates array of address and masks and set it to | |
1120 | * '*addr' and '*mask'. | |
1121 | * Otherwise, returns a positive errno value and sets '*addr', '*mask | |
1122 | * and '*n_addr' to NULL. | |
8b61709d BP |
1123 | * |
1124 | * The following error values have well-defined meanings: | |
1125 | * | |
1126 | * - EADDRNOTAVAIL: 'netdev' has no assigned IPv6 address. | |
1127 | * | |
1128 | * - EOPNOTSUPP: No IPv6 network stack attached to 'netdev'. | |
1129 | * | |
a8704b50 | 1130 | * 'addr' may be null, in which case the address itself is not reported. */ |
064af421 | 1131 | int |
a8704b50 PS |
1132 | netdev_get_addr_list(const struct netdev *netdev, struct in6_addr **addr, |
1133 | struct in6_addr **mask, int *n_addr) | |
064af421 | 1134 | { |
8b61709d | 1135 | int error; |
b1bf7d43 | 1136 | |
a8704b50 PS |
1137 | error = (netdev->netdev_class->get_addr_list |
1138 | ? netdev->netdev_class->get_addr_list(netdev, addr, mask, n_addr): EOPNOTSUPP); | |
1139 | if (error && addr) { | |
1140 | *addr = NULL; | |
1141 | *mask = NULL; | |
1142 | *n_addr = 0; | |
b1bf7d43 | 1143 | } |
a8704b50 | 1144 | |
8b61709d | 1145 | return error; |
064af421 BP |
1146 | } |
1147 | ||
1148 | /* On 'netdev', turns off the flags in 'off' and then turns on the flags in | |
4b609110 | 1149 | * 'on'. Returns 0 if successful, otherwise a positive errno value. */ |
064af421 BP |
1150 | static int |
1151 | do_update_flags(struct netdev *netdev, enum netdev_flags off, | |
8b61709d | 1152 | enum netdev_flags on, enum netdev_flags *old_flagsp, |
4b609110 | 1153 | struct netdev_saved_flags **sfp) |
86383816 | 1154 | OVS_EXCLUDED(netdev_mutex) |
064af421 | 1155 | { |
4b609110 | 1156 | struct netdev_saved_flags *sf = NULL; |
8b61709d | 1157 | enum netdev_flags old_flags; |
064af421 BP |
1158 | int error; |
1159 | ||
b5d57fc8 BP |
1160 | error = netdev->netdev_class->update_flags(netdev, off & ~on, on, |
1161 | &old_flags); | |
064af421 | 1162 | if (error) { |
8b61709d BP |
1163 | VLOG_WARN_RL(&rl, "failed to %s flags for network device %s: %s", |
1164 | off || on ? "set" : "get", netdev_get_name(netdev), | |
10a89ef0 | 1165 | ovs_strerror(error)); |
8b61709d | 1166 | old_flags = 0; |
4b609110 | 1167 | } else if ((off || on) && sfp) { |
8b61709d BP |
1168 | enum netdev_flags new_flags = (old_flags & ~off) | on; |
1169 | enum netdev_flags changed_flags = old_flags ^ new_flags; | |
1170 | if (changed_flags) { | |
86383816 | 1171 | ovs_mutex_lock(&netdev_mutex); |
4b609110 | 1172 | *sfp = sf = xmalloc(sizeof *sf); |
b5d57fc8 | 1173 | sf->netdev = netdev; |
417e7e66 | 1174 | ovs_list_push_front(&netdev->saved_flags_list, &sf->node); |
4b609110 BP |
1175 | sf->saved_flags = changed_flags; |
1176 | sf->saved_values = changed_flags & new_flags; | |
1177 | ||
b5d57fc8 | 1178 | netdev->ref_cnt++; |
86383816 | 1179 | ovs_mutex_unlock(&netdev_mutex); |
8b61709d | 1180 | } |
064af421 | 1181 | } |
4b609110 | 1182 | |
8b61709d BP |
1183 | if (old_flagsp) { |
1184 | *old_flagsp = old_flags; | |
064af421 | 1185 | } |
4b609110 BP |
1186 | if (sfp) { |
1187 | *sfp = sf; | |
1188 | } | |
1189 | ||
064af421 BP |
1190 | return error; |
1191 | } | |
1192 | ||
8b61709d BP |
1193 | /* Obtains the current flags for 'netdev' and stores them into '*flagsp'. |
1194 | * Returns 0 if successful, otherwise a positive errno value. On failure, | |
1195 | * stores 0 into '*flagsp'. */ | |
1196 | int | |
1197 | netdev_get_flags(const struct netdev *netdev_, enum netdev_flags *flagsp) | |
1198 | { | |
ebc56baa | 1199 | struct netdev *netdev = CONST_CAST(struct netdev *, netdev_); |
4b609110 | 1200 | return do_update_flags(netdev, 0, 0, flagsp, NULL); |
8b61709d BP |
1201 | } |
1202 | ||
064af421 | 1203 | /* Sets the flags for 'netdev' to 'flags'. |
064af421 BP |
1204 | * Returns 0 if successful, otherwise a positive errno value. */ |
1205 | int | |
1206 | netdev_set_flags(struct netdev *netdev, enum netdev_flags flags, | |
4b609110 | 1207 | struct netdev_saved_flags **sfp) |
064af421 | 1208 | { |
4b609110 | 1209 | return do_update_flags(netdev, -1, flags, NULL, sfp); |
064af421 BP |
1210 | } |
1211 | ||
4b609110 BP |
1212 | /* Turns on the specified 'flags' on 'netdev': |
1213 | * | |
1214 | * - On success, returns 0. If 'sfp' is nonnull, sets '*sfp' to a newly | |
1215 | * allocated 'struct netdev_saved_flags *' that may be passed to | |
1216 | * netdev_restore_flags() to restore the original values of 'flags' on | |
1217 | * 'netdev' (this will happen automatically at program termination if | |
1218 | * netdev_restore_flags() is never called) , or to NULL if no flags were | |
1219 | * actually changed. | |
1220 | * | |
1221 | * - On failure, returns a positive errno value. If 'sfp' is nonnull, sets | |
1222 | * '*sfp' to NULL. */ | |
064af421 BP |
1223 | int |
1224 | netdev_turn_flags_on(struct netdev *netdev, enum netdev_flags flags, | |
4b609110 | 1225 | struct netdev_saved_flags **sfp) |
064af421 | 1226 | { |
4b609110 | 1227 | return do_update_flags(netdev, 0, flags, NULL, sfp); |
064af421 BP |
1228 | } |
1229 | ||
4b609110 BP |
1230 | /* Turns off the specified 'flags' on 'netdev'. See netdev_turn_flags_on() for |
1231 | * details of the interface. */ | |
064af421 BP |
1232 | int |
1233 | netdev_turn_flags_off(struct netdev *netdev, enum netdev_flags flags, | |
4b609110 BP |
1234 | struct netdev_saved_flags **sfp) |
1235 | { | |
1236 | return do_update_flags(netdev, flags, 0, NULL, sfp); | |
1237 | } | |
1238 | ||
1239 | /* Restores the flags that were saved in 'sf', and destroys 'sf'. | |
1240 | * Does nothing if 'sf' is NULL. */ | |
1241 | void | |
1242 | netdev_restore_flags(struct netdev_saved_flags *sf) | |
86383816 | 1243 | OVS_EXCLUDED(netdev_mutex) |
064af421 | 1244 | { |
4b609110 | 1245 | if (sf) { |
b5d57fc8 | 1246 | struct netdev *netdev = sf->netdev; |
4b609110 BP |
1247 | enum netdev_flags old_flags; |
1248 | ||
b5d57fc8 BP |
1249 | netdev->netdev_class->update_flags(netdev, |
1250 | sf->saved_flags & sf->saved_values, | |
1251 | sf->saved_flags & ~sf->saved_values, | |
1252 | &old_flags); | |
86383816 BP |
1253 | |
1254 | ovs_mutex_lock(&netdev_mutex); | |
417e7e66 | 1255 | ovs_list_remove(&sf->node); |
4b609110 | 1256 | free(sf); |
b5d57fc8 | 1257 | netdev_unref(netdev); |
4b609110 | 1258 | } |
064af421 BP |
1259 | } |
1260 | ||
1261 | /* Looks up the ARP table entry for 'ip' on 'netdev'. If one exists and can be | |
1262 | * successfully retrieved, it stores the corresponding MAC address in 'mac' and | |
1263 | * returns 0. Otherwise, it returns a positive errno value; in particular, | |
8b61709d | 1264 | * ENXIO indicates that there is no ARP table entry for 'ip' on 'netdev'. */ |
064af421 | 1265 | int |
8b61709d | 1266 | netdev_arp_lookup(const struct netdev *netdev, |
74ff3298 | 1267 | ovs_be32 ip, struct eth_addr *mac) |
064af421 | 1268 | { |
b5d57fc8 | 1269 | int error = (netdev->netdev_class->arp_lookup |
15aee116 | 1270 | ? netdev->netdev_class->arp_lookup(netdev, ip, mac) |
8b61709d | 1271 | : EOPNOTSUPP); |
064af421 | 1272 | if (error) { |
74ff3298 | 1273 | *mac = eth_addr_zero; |
064af421 | 1274 | } |
8b61709d | 1275 | return error; |
064af421 BP |
1276 | } |
1277 | ||
85da620e JG |
1278 | /* Returns true if carrier is active (link light is on) on 'netdev'. */ |
1279 | bool | |
1280 | netdev_get_carrier(const struct netdev *netdev) | |
064af421 | 1281 | { |
85da620e JG |
1282 | int error; |
1283 | enum netdev_flags flags; | |
1284 | bool carrier; | |
1285 | ||
1286 | netdev_get_flags(netdev, &flags); | |
1287 | if (!(flags & NETDEV_UP)) { | |
1288 | return false; | |
1289 | } | |
1290 | ||
b5d57fc8 | 1291 | if (!netdev->netdev_class->get_carrier) { |
85da620e JG |
1292 | return true; |
1293 | } | |
1294 | ||
15aee116 | 1295 | error = netdev->netdev_class->get_carrier(netdev, &carrier); |
8b61709d | 1296 | if (error) { |
85da620e | 1297 | VLOG_DBG("%s: failed to get network device carrier status, assuming " |
10a89ef0 | 1298 | "down: %s", netdev_get_name(netdev), ovs_strerror(error)); |
85da620e | 1299 | carrier = false; |
064af421 | 1300 | } |
85da620e JG |
1301 | |
1302 | return carrier; | |
064af421 BP |
1303 | } |
1304 | ||
65c3058c EJ |
1305 | /* Returns the number of times 'netdev''s carrier has changed. */ |
1306 | long long int | |
1307 | netdev_get_carrier_resets(const struct netdev *netdev) | |
1308 | { | |
b5d57fc8 BP |
1309 | return (netdev->netdev_class->get_carrier_resets |
1310 | ? netdev->netdev_class->get_carrier_resets(netdev) | |
65c3058c EJ |
1311 | : 0); |
1312 | } | |
1313 | ||
1670c579 EJ |
1314 | /* Attempts to force netdev_get_carrier() to poll 'netdev''s MII registers for |
1315 | * link status instead of checking 'netdev''s carrier. 'netdev''s MII | |
1316 | * registers will be polled once ever 'interval' milliseconds. If 'netdev' | |
1317 | * does not support MII, another method may be used as a fallback. If | |
1318 | * 'interval' is less than or equal to zero, reverts netdev_get_carrier() to | |
1319 | * its normal behavior. | |
1320 | * | |
1321 | * Returns 0 if successful, otherwise a positive errno value. */ | |
1322 | int | |
1323 | netdev_set_miimon_interval(struct netdev *netdev, long long int interval) | |
63331829 | 1324 | { |
b5d57fc8 BP |
1325 | return (netdev->netdev_class->set_miimon_interval |
1326 | ? netdev->netdev_class->set_miimon_interval(netdev, interval) | |
1670c579 | 1327 | : EOPNOTSUPP); |
63331829 EJ |
1328 | } |
1329 | ||
887fd0ba | 1330 | /* Retrieves current device stats for 'netdev'. */ |
064af421 BP |
1331 | int |
1332 | netdev_get_stats(const struct netdev *netdev, struct netdev_stats *stats) | |
1333 | { | |
1334 | int error; | |
1335 | ||
1336 | COVERAGE_INC(netdev_get_stats); | |
b5d57fc8 BP |
1337 | error = (netdev->netdev_class->get_stats |
1338 | ? netdev->netdev_class->get_stats(netdev, stats) | |
8b61709d | 1339 | : EOPNOTSUPP); |
064af421 BP |
1340 | if (error) { |
1341 | memset(stats, 0xff, sizeof *stats); | |
1342 | } | |
1343 | return error; | |
1344 | } | |
1345 | ||
8b61709d BP |
1346 | /* Attempts to set input rate limiting (policing) policy, such that up to |
1347 | * 'kbits_rate' kbps of traffic is accepted, with a maximum accumulative burst | |
1348 | * size of 'kbits' kb. */ | |
064af421 | 1349 | int |
b1bf7d43 BP |
1350 | netdev_set_policing(struct netdev *netdev, uint32_t kbits_rate, |
1351 | uint32_t kbits_burst) | |
064af421 | 1352 | { |
b5d57fc8 BP |
1353 | return (netdev->netdev_class->set_policing |
1354 | ? netdev->netdev_class->set_policing(netdev, | |
a4af0040 | 1355 | kbits_rate, kbits_burst) |
8b61709d | 1356 | : EOPNOTSUPP); |
064af421 BP |
1357 | } |
1358 | ||
c1c9c9c4 BP |
1359 | /* Adds to 'types' all of the forms of QoS supported by 'netdev', or leaves it |
1360 | * empty if 'netdev' does not support QoS. Any names added to 'types' should | |
1361 | * be documented as valid for the "type" column in the "QoS" table in | |
1362 | * vswitchd/vswitch.xml (which is built as ovs-vswitchd.conf.db(8)). | |
1363 | * | |
1364 | * Every network device supports disabling QoS with a type of "", but this type | |
1365 | * will not be added to 'types'. | |
1366 | * | |
19993ef3 | 1367 | * The caller must initialize 'types' (e.g. with sset_init()) before calling |
c1c9c9c4 | 1368 | * this function. The caller is responsible for destroying 'types' (e.g. with |
19993ef3 | 1369 | * sset_destroy()) when it is no longer needed. |
c1c9c9c4 BP |
1370 | * |
1371 | * Returns 0 if successful, otherwise a positive errno value. */ | |
1372 | int | |
19993ef3 | 1373 | netdev_get_qos_types(const struct netdev *netdev, struct sset *types) |
c1c9c9c4 | 1374 | { |
b5d57fc8 | 1375 | const struct netdev_class *class = netdev->netdev_class; |
c1c9c9c4 BP |
1376 | return (class->get_qos_types |
1377 | ? class->get_qos_types(netdev, types) | |
1378 | : 0); | |
1379 | } | |
1380 | ||
1381 | /* Queries 'netdev' for its capabilities regarding the specified 'type' of QoS, | |
1382 | * which should be "" or one of the types returned by netdev_get_qos_types() | |
1383 | * for 'netdev'. Returns 0 if successful, otherwise a positive errno value. | |
1384 | * On success, initializes 'caps' with the QoS capabilities; on failure, clears | |
1385 | * 'caps' to all zeros. */ | |
1386 | int | |
1387 | netdev_get_qos_capabilities(const struct netdev *netdev, const char *type, | |
1388 | struct netdev_qos_capabilities *caps) | |
1389 | { | |
b5d57fc8 | 1390 | const struct netdev_class *class = netdev->netdev_class; |
c1c9c9c4 BP |
1391 | |
1392 | if (*type) { | |
1393 | int retval = (class->get_qos_capabilities | |
1394 | ? class->get_qos_capabilities(netdev, type, caps) | |
1395 | : EOPNOTSUPP); | |
1396 | if (retval) { | |
1397 | memset(caps, 0, sizeof *caps); | |
1398 | } | |
1399 | return retval; | |
1400 | } else { | |
1401 | /* Every netdev supports turning off QoS. */ | |
1402 | memset(caps, 0, sizeof *caps); | |
1403 | return 0; | |
1404 | } | |
1405 | } | |
1406 | ||
1407 | /* Obtains the number of queues supported by 'netdev' for the specified 'type' | |
1408 | * of QoS. Returns 0 if successful, otherwise a positive errno value. Stores | |
1409 | * the number of queues (zero on failure) in '*n_queuesp'. | |
1410 | * | |
1411 | * This is just a simple wrapper around netdev_get_qos_capabilities(). */ | |
1412 | int | |
1413 | netdev_get_n_queues(const struct netdev *netdev, | |
1414 | const char *type, unsigned int *n_queuesp) | |
1415 | { | |
1416 | struct netdev_qos_capabilities caps; | |
1417 | int retval; | |
1418 | ||
1419 | retval = netdev_get_qos_capabilities(netdev, type, &caps); | |
1420 | *n_queuesp = caps.n_queues; | |
1421 | return retval; | |
1422 | } | |
1423 | ||
1424 | /* Queries 'netdev' about its currently configured form of QoS. If successful, | |
1425 | * stores the name of the current form of QoS into '*typep', stores any details | |
1426 | * of configuration as string key-value pairs in 'details', and returns 0. On | |
1427 | * failure, sets '*typep' to NULL and returns a positive errno value. | |
1428 | * | |
1429 | * A '*typep' of "" indicates that QoS is currently disabled on 'netdev'. | |
1430 | * | |
79f1cbe9 EJ |
1431 | * The caller must initialize 'details' as an empty smap (e.g. with |
1432 | * smap_init()) before calling this function. The caller must free 'details' | |
1433 | * when it is no longer needed (e.g. with smap_destroy()). | |
c1c9c9c4 BP |
1434 | * |
1435 | * The caller must not modify or free '*typep'. | |
1436 | * | |
1437 | * '*typep' will be one of the types returned by netdev_get_qos_types() for | |
1438 | * 'netdev'. The contents of 'details' should be documented as valid for | |
1439 | * '*typep' in the "other_config" column in the "QoS" table in | |
1440 | * vswitchd/vswitch.xml (which is built as ovs-vswitchd.conf.db(8)). */ | |
1441 | int | |
1442 | netdev_get_qos(const struct netdev *netdev, | |
79f1cbe9 | 1443 | const char **typep, struct smap *details) |
c1c9c9c4 | 1444 | { |
b5d57fc8 | 1445 | const struct netdev_class *class = netdev->netdev_class; |
c1c9c9c4 BP |
1446 | int retval; |
1447 | ||
1448 | if (class->get_qos) { | |
1449 | retval = class->get_qos(netdev, typep, details); | |
1450 | if (retval) { | |
1451 | *typep = NULL; | |
79f1cbe9 | 1452 | smap_clear(details); |
c1c9c9c4 BP |
1453 | } |
1454 | return retval; | |
1455 | } else { | |
1456 | /* 'netdev' doesn't support QoS, so report that QoS is disabled. */ | |
1457 | *typep = ""; | |
1458 | return 0; | |
1459 | } | |
1460 | } | |
1461 | ||
1462 | /* Attempts to reconfigure QoS on 'netdev', changing the form of QoS to 'type' | |
1463 | * with details of configuration from 'details'. Returns 0 if successful, | |
1464 | * otherwise a positive errno value. On error, the previous QoS configuration | |
1465 | * is retained. | |
1466 | * | |
1467 | * When this function changes the type of QoS (not just 'details'), this also | |
1468 | * resets all queue configuration for 'netdev' to their defaults (which depend | |
1469 | * on the specific type of QoS). Otherwise, the queue configuration for | |
1470 | * 'netdev' is unchanged. | |
1471 | * | |
1472 | * 'type' should be "" (to disable QoS) or one of the types returned by | |
1473 | * netdev_get_qos_types() for 'netdev'. The contents of 'details' should be | |
1474 | * documented as valid for the given 'type' in the "other_config" column in the | |
1475 | * "QoS" table in vswitchd/vswitch.xml (which is built as | |
1476 | * ovs-vswitchd.conf.db(8)). | |
1477 | * | |
1478 | * NULL may be specified for 'details' if there are no configuration | |
1479 | * details. */ | |
1480 | int | |
1481 | netdev_set_qos(struct netdev *netdev, | |
79f1cbe9 | 1482 | const char *type, const struct smap *details) |
c1c9c9c4 | 1483 | { |
b5d57fc8 | 1484 | const struct netdev_class *class = netdev->netdev_class; |
c1c9c9c4 BP |
1485 | |
1486 | if (!type) { | |
1487 | type = ""; | |
1488 | } | |
1489 | ||
1490 | if (class->set_qos) { | |
1491 | if (!details) { | |
edfbe9f7 | 1492 | static const struct smap empty = SMAP_INITIALIZER(&empty); |
c1c9c9c4 BP |
1493 | details = ∅ |
1494 | } | |
1495 | return class->set_qos(netdev, type, details); | |
1496 | } else { | |
1497 | return *type ? EOPNOTSUPP : 0; | |
1498 | } | |
1499 | } | |
1500 | ||
1501 | /* Queries 'netdev' for information about the queue numbered 'queue_id'. If | |
1502 | * successful, adds that information as string key-value pairs to 'details'. | |
1503 | * Returns 0 if successful, otherwise a positive errno value. | |
1504 | * | |
1505 | * 'queue_id' must be less than the number of queues supported by 'netdev' for | |
1506 | * the current form of QoS (e.g. as returned by netdev_get_n_queues(netdev)). | |
1507 | * | |
1508 | * The returned contents of 'details' should be documented as valid for the | |
1509 | * given 'type' in the "other_config" column in the "Queue" table in | |
1510 | * vswitchd/vswitch.xml (which is built as ovs-vswitchd.conf.db(8)). | |
1511 | * | |
79f1cbe9 EJ |
1512 | * The caller must initialize 'details' (e.g. with smap_init()) before calling |
1513 | * this function. The caller must free 'details' when it is no longer needed | |
1514 | * (e.g. with smap_destroy()). */ | |
c1c9c9c4 BP |
1515 | int |
1516 | netdev_get_queue(const struct netdev *netdev, | |
79f1cbe9 | 1517 | unsigned int queue_id, struct smap *details) |
c1c9c9c4 | 1518 | { |
b5d57fc8 | 1519 | const struct netdev_class *class = netdev->netdev_class; |
c1c9c9c4 BP |
1520 | int retval; |
1521 | ||
1522 | retval = (class->get_queue | |
1523 | ? class->get_queue(netdev, queue_id, details) | |
1524 | : EOPNOTSUPP); | |
1525 | if (retval) { | |
79f1cbe9 | 1526 | smap_clear(details); |
c1c9c9c4 BP |
1527 | } |
1528 | return retval; | |
1529 | } | |
1530 | ||
1531 | /* Configures the queue numbered 'queue_id' on 'netdev' with the key-value | |
1532 | * string pairs in 'details'. The contents of 'details' should be documented | |
1533 | * as valid for the given 'type' in the "other_config" column in the "Queue" | |
1534 | * table in vswitchd/vswitch.xml (which is built as ovs-vswitchd.conf.db(8)). | |
1535 | * Returns 0 if successful, otherwise a positive errno value. On failure, the | |
1536 | * given queue's configuration should be unmodified. | |
1537 | * | |
1538 | * 'queue_id' must be less than the number of queues supported by 'netdev' for | |
1539 | * the current form of QoS (e.g. as returned by netdev_get_n_queues(netdev)). | |
1540 | * | |
1541 | * This function does not modify 'details', and the caller retains ownership of | |
c1fdab01 | 1542 | * it. */ |
c1c9c9c4 BP |
1543 | int |
1544 | netdev_set_queue(struct netdev *netdev, | |
79f1cbe9 | 1545 | unsigned int queue_id, const struct smap *details) |
c1c9c9c4 | 1546 | { |
b5d57fc8 | 1547 | const struct netdev_class *class = netdev->netdev_class; |
c1c9c9c4 BP |
1548 | return (class->set_queue |
1549 | ? class->set_queue(netdev, queue_id, details) | |
1550 | : EOPNOTSUPP); | |
1551 | } | |
1552 | ||
1553 | /* Attempts to delete the queue numbered 'queue_id' from 'netdev'. Some kinds | |
1554 | * of QoS may have a fixed set of queues, in which case attempts to delete them | |
1555 | * will fail with EOPNOTSUPP. | |
1556 | * | |
1557 | * Returns 0 if successful, otherwise a positive errno value. On failure, the | |
1558 | * given queue will be unmodified. | |
1559 | * | |
1560 | * 'queue_id' must be less than the number of queues supported by 'netdev' for | |
1561 | * the current form of QoS (e.g. as returned by | |
1562 | * netdev_get_n_queues(netdev)). */ | |
1563 | int | |
1564 | netdev_delete_queue(struct netdev *netdev, unsigned int queue_id) | |
1565 | { | |
b5d57fc8 | 1566 | const struct netdev_class *class = netdev->netdev_class; |
c1c9c9c4 BP |
1567 | return (class->delete_queue |
1568 | ? class->delete_queue(netdev, queue_id) | |
1569 | : EOPNOTSUPP); | |
1570 | } | |
1571 | ||
1572 | /* Obtains statistics about 'queue_id' on 'netdev'. On success, returns 0 and | |
1573 | * fills 'stats' with the queue's statistics; individual members of 'stats' may | |
1574 | * be set to all-1-bits if the statistic is unavailable. On failure, returns a | |
6dc34a0d BP |
1575 | * positive errno value and fills 'stats' with values indicating unsupported |
1576 | * statistics. */ | |
c1c9c9c4 BP |
1577 | int |
1578 | netdev_get_queue_stats(const struct netdev *netdev, unsigned int queue_id, | |
1579 | struct netdev_queue_stats *stats) | |
1580 | { | |
b5d57fc8 | 1581 | const struct netdev_class *class = netdev->netdev_class; |
c1c9c9c4 BP |
1582 | int retval; |
1583 | ||
1584 | retval = (class->get_queue_stats | |
1585 | ? class->get_queue_stats(netdev, queue_id, stats) | |
1586 | : EOPNOTSUPP); | |
1587 | if (retval) { | |
6dc34a0d BP |
1588 | stats->tx_bytes = UINT64_MAX; |
1589 | stats->tx_packets = UINT64_MAX; | |
1590 | stats->tx_errors = UINT64_MAX; | |
1591 | stats->created = LLONG_MIN; | |
c1c9c9c4 BP |
1592 | } |
1593 | return retval; | |
1594 | } | |
1595 | ||
89454bf4 BP |
1596 | /* Initializes 'dump' to begin dumping the queues in a netdev. |
1597 | * | |
1598 | * This function provides no status indication. An error status for the entire | |
1599 | * dump operation is provided when it is completed by calling | |
1600 | * netdev_queue_dump_done(). | |
1601 | */ | |
1602 | void | |
1603 | netdev_queue_dump_start(struct netdev_queue_dump *dump, | |
1604 | const struct netdev *netdev) | |
1605 | { | |
1606 | dump->netdev = netdev_ref(netdev); | |
1607 | if (netdev->netdev_class->queue_dump_start) { | |
1608 | dump->error = netdev->netdev_class->queue_dump_start(netdev, | |
1609 | &dump->state); | |
1610 | } else { | |
1611 | dump->error = EOPNOTSUPP; | |
1612 | } | |
1613 | } | |
1614 | ||
1615 | /* Attempts to retrieve another queue from 'dump', which must have been | |
1616 | * initialized with netdev_queue_dump_start(). On success, stores a new queue | |
1617 | * ID into '*queue_id', fills 'details' with configuration details for the | |
1618 | * queue, and returns true. On failure, returns false. | |
c1c9c9c4 | 1619 | * |
89454bf4 BP |
1620 | * Queues are not necessarily dumped in increasing order of queue ID (or any |
1621 | * other predictable order). | |
c1c9c9c4 | 1622 | * |
89454bf4 BP |
1623 | * Failure might indicate an actual error or merely that the last queue has |
1624 | * been dumped. An error status for the entire dump operation is provided when | |
1625 | * it is completed by calling netdev_queue_dump_done(). | |
c1c9c9c4 | 1626 | * |
89454bf4 BP |
1627 | * The returned contents of 'details' should be documented as valid for the |
1628 | * given 'type' in the "other_config" column in the "Queue" table in | |
1629 | * vswitchd/vswitch.xml (which is built as ovs-vswitchd.conf.db(8)). | |
1630 | * | |
1631 | * The caller must initialize 'details' (e.g. with smap_init()) before calling | |
1632 | * this function. This function will clear and replace its contents. The | |
1633 | * caller must free 'details' when it is no longer needed (e.g. with | |
1634 | * smap_destroy()). */ | |
1635 | bool | |
1636 | netdev_queue_dump_next(struct netdev_queue_dump *dump, | |
1637 | unsigned int *queue_id, struct smap *details) | |
1638 | { | |
1639 | const struct netdev *netdev = dump->netdev; | |
1640 | ||
1641 | if (dump->error) { | |
1642 | return false; | |
1643 | } | |
1644 | ||
1645 | dump->error = netdev->netdev_class->queue_dump_next(netdev, dump->state, | |
1646 | queue_id, details); | |
1647 | ||
1648 | if (dump->error) { | |
1649 | netdev->netdev_class->queue_dump_done(netdev, dump->state); | |
1650 | return false; | |
1651 | } | |
1652 | return true; | |
1653 | } | |
1654 | ||
1655 | /* Completes queue table dump operation 'dump', which must have been | |
1656 | * initialized with netdev_queue_dump_start(). Returns 0 if the dump operation | |
1657 | * was error-free, otherwise a positive errno value describing the problem. */ | |
c1c9c9c4 | 1658 | int |
89454bf4 | 1659 | netdev_queue_dump_done(struct netdev_queue_dump *dump) |
c1c9c9c4 | 1660 | { |
89454bf4 BP |
1661 | const struct netdev *netdev = dump->netdev; |
1662 | if (!dump->error && netdev->netdev_class->queue_dump_done) { | |
1663 | dump->error = netdev->netdev_class->queue_dump_done(netdev, | |
1664 | dump->state); | |
1665 | } | |
1666 | netdev_close(dump->netdev); | |
1667 | return dump->error == EOF ? 0 : dump->error; | |
c1c9c9c4 BP |
1668 | } |
1669 | ||
1670 | /* Iterates over all of 'netdev''s queues, calling 'cb' with the queue's ID, | |
1671 | * its statistics, and the 'aux' specified by the caller. The order of | |
1672 | * iteration is unspecified, but (when successful) each queue is visited | |
1673 | * exactly once. | |
1674 | * | |
1675 | * Calling this function may be more efficient than calling | |
1676 | * netdev_get_queue_stats() for every queue. | |
1677 | * | |
1678 | * 'cb' must not modify or free the statistics passed in. | |
1679 | * | |
1680 | * Returns 0 if successful, otherwise a positive errno value. On error, some | |
1681 | * configured queues may not have been included in the iteration. */ | |
1682 | int | |
1683 | netdev_dump_queue_stats(const struct netdev *netdev, | |
1684 | netdev_dump_queue_stats_cb *cb, void *aux) | |
1685 | { | |
b5d57fc8 | 1686 | const struct netdev_class *class = netdev->netdev_class; |
c1c9c9c4 BP |
1687 | return (class->dump_queue_stats |
1688 | ? class->dump_queue_stats(netdev, cb, aux) | |
1689 | : EOPNOTSUPP); | |
1690 | } | |
1691 | ||
8b61709d | 1692 | \f |
b5d57fc8 | 1693 | /* Returns the class type of 'netdev'. |
a740f0de JG |
1694 | * |
1695 | * The caller must not free the returned value. */ | |
149f577a | 1696 | const char * |
b5d57fc8 | 1697 | netdev_get_type(const struct netdev *netdev) |
a740f0de | 1698 | { |
b5d57fc8 | 1699 | return netdev->netdev_class->type; |
a740f0de JG |
1700 | } |
1701 | ||
b5d57fc8 | 1702 | /* Returns the class associated with 'netdev'. */ |
15b3596a | 1703 | const struct netdev_class * |
b5d57fc8 | 1704 | netdev_get_class(const struct netdev *netdev) |
a740f0de | 1705 | { |
b5d57fc8 | 1706 | return netdev->netdev_class; |
a740f0de JG |
1707 | } |
1708 | ||
b5d57fc8 | 1709 | /* Returns the netdev with 'name' or NULL if there is none. |
46415c90 | 1710 | * |
991e5fae | 1711 | * The caller must free the returned netdev with netdev_close(). */ |
b5d57fc8 BP |
1712 | struct netdev * |
1713 | netdev_from_name(const char *name) | |
86383816 | 1714 | OVS_EXCLUDED(netdev_mutex) |
46415c90 | 1715 | { |
991e5fae BP |
1716 | struct netdev *netdev; |
1717 | ||
86383816 | 1718 | ovs_mutex_lock(&netdev_mutex); |
991e5fae BP |
1719 | netdev = shash_find_data(&netdev_shash, name); |
1720 | if (netdev) { | |
86383816 | 1721 | netdev->ref_cnt++; |
991e5fae | 1722 | } |
86383816 | 1723 | ovs_mutex_unlock(&netdev_mutex); |
991e5fae BP |
1724 | |
1725 | return netdev; | |
46415c90 JG |
1726 | } |
1727 | ||
7dab847a | 1728 | /* Fills 'device_list' with devices that match 'netdev_class'. |
46415c90 | 1729 | * |
2f980d74 BP |
1730 | * The caller is responsible for initializing and destroying 'device_list' and |
1731 | * must close each device on the list. */ | |
46415c90 | 1732 | void |
b5d57fc8 BP |
1733 | netdev_get_devices(const struct netdev_class *netdev_class, |
1734 | struct shash *device_list) | |
86383816 | 1735 | OVS_EXCLUDED(netdev_mutex) |
46415c90 JG |
1736 | { |
1737 | struct shash_node *node; | |
86383816 BP |
1738 | |
1739 | ovs_mutex_lock(&netdev_mutex); | |
b5d57fc8 BP |
1740 | SHASH_FOR_EACH (node, &netdev_shash) { |
1741 | struct netdev *dev = node->data; | |
46415c90 | 1742 | |
7dab847a | 1743 | if (dev->netdev_class == netdev_class) { |
2f980d74 | 1744 | dev->ref_cnt++; |
46415c90 JG |
1745 | shash_add(device_list, node->name, node->data); |
1746 | } | |
1747 | } | |
86383816 | 1748 | ovs_mutex_unlock(&netdev_mutex); |
46415c90 JG |
1749 | } |
1750 | ||
41ca1e0a AW |
1751 | /* Extracts pointers to all 'netdev-vports' into an array 'vports' |
1752 | * and returns it. Stores the size of the array into '*size'. | |
1753 | * | |
1754 | * The caller is responsible for freeing 'vports' and must close | |
1755 | * each 'netdev-vport' in the list. */ | |
1756 | struct netdev ** | |
1757 | netdev_get_vports(size_t *size) | |
1758 | OVS_EXCLUDED(netdev_mutex) | |
1759 | { | |
1760 | struct netdev **vports; | |
1761 | struct shash_node *node; | |
1762 | size_t n = 0; | |
1763 | ||
1764 | if (!size) { | |
1765 | return NULL; | |
1766 | } | |
1767 | ||
1768 | /* Explicitly allocates big enough chunk of memory. */ | |
1769 | vports = xmalloc(shash_count(&netdev_shash) * sizeof *vports); | |
1770 | ovs_mutex_lock(&netdev_mutex); | |
1771 | SHASH_FOR_EACH (node, &netdev_shash) { | |
1772 | struct netdev *dev = node->data; | |
1773 | ||
1774 | if (netdev_vport_is_vport_class(dev->netdev_class)) { | |
1775 | dev->ref_cnt++; | |
1776 | vports[n] = dev; | |
1777 | n++; | |
1778 | } | |
1779 | } | |
1780 | ovs_mutex_unlock(&netdev_mutex); | |
1781 | *size = n; | |
1782 | ||
1783 | return vports; | |
1784 | } | |
1785 | ||
0a740f48 EJ |
1786 | const char * |
1787 | netdev_get_type_from_name(const char *name) | |
1788 | { | |
991e5fae BP |
1789 | struct netdev *dev = netdev_from_name(name); |
1790 | const char *type = dev ? netdev_get_type(dev) : NULL; | |
1791 | netdev_close(dev); | |
1792 | return type; | |
6c88d577 | 1793 | } |
e9e28be3 | 1794 | \f |
b5d57fc8 | 1795 | struct netdev * |
f7791740 | 1796 | netdev_rxq_get_netdev(const struct netdev_rxq *rx) |
796223f5 | 1797 | { |
b5d57fc8 BP |
1798 | ovs_assert(rx->netdev->ref_cnt > 0); |
1799 | return rx->netdev; | |
796223f5 BP |
1800 | } |
1801 | ||
1802 | const char * | |
f7791740 | 1803 | netdev_rxq_get_name(const struct netdev_rxq *rx) |
796223f5 | 1804 | { |
f7791740 | 1805 | return netdev_get_name(netdev_rxq_get_netdev(rx)); |
796223f5 BP |
1806 | } |
1807 | ||
ce179f11 IM |
1808 | int |
1809 | netdev_rxq_get_queue_id(const struct netdev_rxq *rx) | |
1810 | { | |
1811 | return rx->queue_id; | |
1812 | } | |
1813 | ||
064af421 | 1814 | static void |
4b609110 | 1815 | restore_all_flags(void *aux OVS_UNUSED) |
064af421 | 1816 | { |
4b609110 BP |
1817 | struct shash_node *node; |
1818 | ||
b5d57fc8 BP |
1819 | SHASH_FOR_EACH (node, &netdev_shash) { |
1820 | struct netdev *netdev = node->data; | |
4b609110 BP |
1821 | const struct netdev_saved_flags *sf; |
1822 | enum netdev_flags saved_values; | |
1823 | enum netdev_flags saved_flags; | |
1824 | ||
1825 | saved_values = saved_flags = 0; | |
b5d57fc8 | 1826 | LIST_FOR_EACH (sf, node, &netdev->saved_flags_list) { |
4b609110 BP |
1827 | saved_flags |= sf->saved_flags; |
1828 | saved_values &= ~sf->saved_flags; | |
1829 | saved_values |= sf->saved_flags & sf->saved_values; | |
1830 | } | |
1831 | if (saved_flags) { | |
1832 | enum netdev_flags old_flags; | |
1833 | ||
b5d57fc8 BP |
1834 | netdev->netdev_class->update_flags(netdev, |
1835 | saved_flags & saved_values, | |
1836 | saved_flags & ~saved_values, | |
1837 | &old_flags); | |
4b609110 | 1838 | } |
064af421 BP |
1839 | } |
1840 | } | |
3e912ffc AW |
1841 | |
1842 | uint64_t | |
1843 | netdev_get_change_seq(const struct netdev *netdev) | |
1844 | { | |
1845 | return netdev->change_seq; | |
1846 | } | |
a8704b50 PS |
1847 | |
1848 | #ifndef _WIN32 | |
1849 | /* This implementation is shared by Linux and BSD. */ | |
1850 | ||
1851 | static struct ifaddrs *if_addr_list; | |
1852 | static struct ovs_mutex if_addr_list_lock = OVS_MUTEX_INITIALIZER; | |
1853 | ||
1854 | void | |
1855 | netdev_get_addrs_list_flush(void) | |
1856 | { | |
1857 | ovs_mutex_lock(&if_addr_list_lock); | |
1858 | if (if_addr_list) { | |
1859 | freeifaddrs(if_addr_list); | |
1860 | if_addr_list = NULL; | |
1861 | } | |
1862 | ovs_mutex_unlock(&if_addr_list_lock); | |
1863 | } | |
1864 | ||
1865 | int | |
1866 | netdev_get_addrs(const char dev[], struct in6_addr **paddr, | |
1867 | struct in6_addr **pmask, int *n_in) | |
1868 | { | |
1869 | struct in6_addr *addr_array, *mask_array; | |
1870 | const struct ifaddrs *ifa; | |
1871 | int cnt = 0, i = 0; | |
1872 | ||
1873 | ovs_mutex_lock(&if_addr_list_lock); | |
1874 | if (!if_addr_list) { | |
1875 | int err; | |
1876 | ||
1877 | err = getifaddrs(&if_addr_list); | |
1878 | if (err) { | |
1879 | ovs_mutex_unlock(&if_addr_list_lock); | |
1880 | return -err; | |
1881 | } | |
1882 | } | |
1883 | ||
1884 | for (ifa = if_addr_list; ifa; ifa = ifa->ifa_next) { | |
1885 | int family; | |
1886 | ||
1887 | family = ifa->ifa_addr->sa_family; | |
1888 | if (family == AF_INET || family == AF_INET6) { | |
1889 | if (!strncmp(ifa->ifa_name, dev, IFNAMSIZ)) { | |
1890 | cnt++; | |
1891 | } | |
1892 | } | |
1893 | } | |
1894 | ||
1895 | if (!cnt) { | |
1896 | ovs_mutex_unlock(&if_addr_list_lock); | |
1897 | return EADDRNOTAVAIL; | |
1898 | } | |
1899 | addr_array = xzalloc(sizeof *addr_array * cnt); | |
1900 | mask_array = xzalloc(sizeof *mask_array * cnt); | |
1901 | for (ifa = if_addr_list; ifa; ifa = ifa->ifa_next) { | |
1902 | int family; | |
1903 | ||
1904 | if (strncmp(ifa->ifa_name, dev, IFNAMSIZ)) { | |
1905 | continue; | |
1906 | } | |
1907 | ||
1908 | family = ifa->ifa_addr->sa_family; | |
1909 | if (family == AF_INET) { | |
1910 | const struct sockaddr_in *sin; | |
1911 | ||
1912 | sin = ALIGNED_CAST(const struct sockaddr_in *, ifa->ifa_addr); | |
1913 | in6_addr_set_mapped_ipv4(&addr_array[i], sin->sin_addr.s_addr); | |
1914 | sin = (struct sockaddr_in *) &ifa->ifa_netmask; | |
1915 | in6_addr_set_mapped_ipv4(&mask_array[i], sin->sin_addr.s_addr); | |
1916 | i++; | |
1917 | } else if (family == AF_INET6) { | |
1918 | const struct sockaddr_in6 *sin6; | |
1919 | ||
1920 | sin6 = ALIGNED_CAST(const struct sockaddr_in6 *, ifa->ifa_addr); | |
1921 | memcpy(&addr_array[i], &sin6->sin6_addr, sizeof *addr_array); | |
1922 | sin6 = (struct sockaddr_in6 *) &ifa->ifa_netmask; | |
1923 | memcpy(&mask_array[i], &sin6->sin6_addr, sizeof *mask_array); | |
1924 | i++; | |
1925 | } | |
1926 | } | |
1927 | ovs_mutex_unlock(&if_addr_list_lock); | |
1928 | if (paddr) { | |
1929 | *n_in = cnt; | |
1930 | *paddr = addr_array; | |
1931 | *pmask = mask_array; | |
1932 | } else { | |
1933 | free(addr_array); | |
1934 | free(mask_array); | |
1935 | } | |
1936 | return 0; | |
1937 | } | |
1938 | #endif |