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064af421 | 1 | /* |
275707c3 | 2 | * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013 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 | ||
27 | #include "coverage.h" | |
94a53842 | 28 | #include "dpif.h" |
064af421 BP |
29 | #include "dynamic-string.h" |
30 | #include "fatal-signal.h" | |
149f577a | 31 | #include "hash.h" |
064af421 | 32 | #include "list.h" |
8b61709d | 33 | #include "netdev-provider.h" |
2b9d6589 | 34 | #include "netdev-vport.h" |
064af421 | 35 | #include "ofpbuf.h" |
622ee2cf | 36 | #include "openflow/openflow.h" |
064af421 BP |
37 | #include "packets.h" |
38 | #include "poll-loop.h" | |
e9e28be3 | 39 | #include "shash.h" |
79f1cbe9 | 40 | #include "smap.h" |
b3c01ed3 | 41 | #include "sset.h" |
064af421 | 42 | #include "svec.h" |
064af421 BP |
43 | #include "vlog.h" |
44 | ||
d98e6007 | 45 | VLOG_DEFINE_THIS_MODULE(netdev); |
5136ce49 | 46 | |
d76f09ea BP |
47 | COVERAGE_DEFINE(netdev_received); |
48 | COVERAGE_DEFINE(netdev_sent); | |
49 | COVERAGE_DEFINE(netdev_add_router); | |
50 | COVERAGE_DEFINE(netdev_get_stats); | |
51 | ||
4b609110 | 52 | struct netdev_saved_flags { |
b5d57fc8 BP |
53 | struct netdev *netdev; |
54 | struct list node; /* In struct netdev's saved_flags_list. */ | |
4b609110 BP |
55 | enum netdev_flags saved_flags; |
56 | enum netdev_flags saved_values; | |
57 | }; | |
58 | ||
77909859 | 59 | static struct shash netdev_classes = SHASH_INITIALIZER(&netdev_classes); |
064af421 | 60 | |
6c88d577 | 61 | /* All created network devices. */ |
b5d57fc8 | 62 | static struct shash netdev_shash = SHASH_INITIALIZER(&netdev_shash); |
064af421 | 63 | |
064af421 BP |
64 | /* This is set pretty low because we probably won't learn anything from the |
65 | * additional log messages. */ | |
66 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20); | |
67 | ||
4b609110 | 68 | static void restore_all_flags(void *aux OVS_UNUSED); |
b5d57fc8 | 69 | void update_device_args(struct netdev *, const struct shash *args); |
8b61709d | 70 | |
77909859 | 71 | static void |
8b61709d | 72 | netdev_initialize(void) |
064af421 | 73 | { |
2b9d6589 | 74 | static bool inited; |
e3830e90 | 75 | |
2b9d6589 BP |
76 | if (!inited) { |
77 | inited = true; | |
8b61709d | 78 | |
4b609110 | 79 | fatal_signal_add_hook(restore_all_flags, NULL, NULL, true); |
c060c4cf | 80 | netdev_vport_patch_register(); |
064af421 | 81 | |
361906b1 | 82 | #ifdef LINUX_DATAPATH |
2b9d6589 | 83 | netdev_register_provider(&netdev_linux_class); |
c3827f61 | 84 | netdev_register_provider(&netdev_internal_class); |
2b9d6589 | 85 | netdev_register_provider(&netdev_tap_class); |
c060c4cf | 86 | netdev_vport_tunnel_register(); |
f6eb6b20 | 87 | #endif |
666afb55 | 88 | #if defined(__FreeBSD__) || defined(__NetBSD__) |
f6eb6b20 GL |
89 | netdev_register_provider(&netdev_tap_class); |
90 | netdev_register_provider(&netdev_bsd_class); | |
2b9d6589 | 91 | #endif |
064af421 | 92 | } |
064af421 BP |
93 | } |
94 | ||
8b61709d BP |
95 | /* Performs periodic work needed by all the various kinds of netdevs. |
96 | * | |
97 | * If your program opens any netdevs, it must call this function within its | |
98 | * main poll loop. */ | |
99 | void | |
100 | netdev_run(void) | |
064af421 | 101 | { |
77909859 JG |
102 | struct shash_node *node; |
103 | SHASH_FOR_EACH(node, &netdev_classes) { | |
7dab847a JG |
104 | const struct netdev_class *netdev_class = node->data; |
105 | if (netdev_class->run) { | |
106 | netdev_class->run(); | |
064af421 | 107 | } |
064af421 BP |
108 | } |
109 | } | |
110 | ||
8b61709d BP |
111 | /* Arranges for poll_block() to wake up when netdev_run() needs to be called. |
112 | * | |
113 | * If your program opens any netdevs, it must call this function within its | |
114 | * main poll loop. */ | |
115 | void | |
116 | netdev_wait(void) | |
064af421 | 117 | { |
77909859 JG |
118 | struct shash_node *node; |
119 | SHASH_FOR_EACH(node, &netdev_classes) { | |
7dab847a JG |
120 | const struct netdev_class *netdev_class = node->data; |
121 | if (netdev_class->wait) { | |
122 | netdev_class->wait(); | |
8b61709d | 123 | } |
064af421 | 124 | } |
064af421 BP |
125 | } |
126 | ||
77909859 JG |
127 | /* Initializes and registers a new netdev provider. After successful |
128 | * registration, new netdevs of that type can be opened using netdev_open(). */ | |
129 | int | |
130 | netdev_register_provider(const struct netdev_class *new_class) | |
131 | { | |
77909859 JG |
132 | if (shash_find(&netdev_classes, new_class->type)) { |
133 | VLOG_WARN("attempted to register duplicate netdev provider: %s", | |
134 | new_class->type); | |
135 | return EEXIST; | |
136 | } | |
137 | ||
138 | if (new_class->init) { | |
139 | int error = new_class->init(); | |
140 | if (error) { | |
141 | VLOG_ERR("failed to initialize %s network device class: %s", | |
10a89ef0 | 142 | new_class->type, ovs_strerror(error)); |
77909859 JG |
143 | return error; |
144 | } | |
145 | } | |
146 | ||
2b9d6589 | 147 | shash_add(&netdev_classes, new_class->type, new_class); |
77909859 JG |
148 | |
149 | return 0; | |
150 | } | |
151 | ||
152 | /* Unregisters a netdev provider. 'type' must have been previously | |
153 | * registered and not currently be in use by any netdevs. After unregistration | |
154 | * new netdevs of that type cannot be opened using netdev_open(). */ | |
155 | int | |
156 | netdev_unregister_provider(const char *type) | |
157 | { | |
b5d57fc8 | 158 | struct shash_node *del_node, *netdev_node; |
77909859 JG |
159 | |
160 | del_node = shash_find(&netdev_classes, type); | |
161 | if (!del_node) { | |
162 | VLOG_WARN("attempted to unregister a netdev provider that is not " | |
163 | "registered: %s", type); | |
164 | return EAFNOSUPPORT; | |
165 | } | |
166 | ||
b5d57fc8 BP |
167 | SHASH_FOR_EACH (netdev_node, &netdev_shash) { |
168 | struct netdev *netdev = netdev_node->data; | |
169 | if (!strcmp(netdev->netdev_class->type, type)) { | |
77909859 JG |
170 | VLOG_WARN("attempted to unregister in use netdev provider: %s", |
171 | type); | |
172 | return EBUSY; | |
173 | } | |
174 | } | |
175 | ||
176 | shash_delete(&netdev_classes, del_node); | |
77909859 JG |
177 | |
178 | return 0; | |
179 | } | |
180 | ||
c3827f61 BP |
181 | const struct netdev_class * |
182 | netdev_lookup_provider(const char *type) | |
183 | { | |
184 | netdev_initialize(); | |
185 | return shash_find_data(&netdev_classes, type && type[0] ? type : "system"); | |
186 | } | |
187 | ||
77909859 | 188 | /* Clears 'types' and enumerates the types of all currently registered netdev |
19993ef3 | 189 | * providers into it. The caller must first initialize the sset. */ |
77909859 | 190 | void |
19993ef3 | 191 | netdev_enumerate_types(struct sset *types) |
77909859 JG |
192 | { |
193 | struct shash_node *node; | |
194 | ||
195 | netdev_initialize(); | |
19993ef3 | 196 | sset_clear(types); |
77909859 JG |
197 | |
198 | SHASH_FOR_EACH(node, &netdev_classes) { | |
199 | const struct netdev_class *netdev_class = node->data; | |
19993ef3 | 200 | sset_add(types, netdev_class->type); |
77909859 JG |
201 | } |
202 | } | |
203 | ||
94a53842 AW |
204 | /* Check that the network device name is not the same as any of the registered |
205 | * vport providers' dpif_port name (dpif_port is NULL if the vport provider | |
206 | * does not define it) or the datapath internal port name (e.g. ovs-system). | |
207 | * | |
208 | * Returns true if there is a name conflict, false otherwise. */ | |
209 | bool | |
210 | netdev_is_reserved_name(const char *name) | |
211 | { | |
212 | struct shash_node *node; | |
213 | ||
214 | netdev_initialize(); | |
215 | SHASH_FOR_EACH (node, &netdev_classes) { | |
216 | const char *dpif_port; | |
217 | dpif_port = netdev_vport_class_get_dpif_port(node->data); | |
218 | if (dpif_port && !strcmp(dpif_port, name)) { | |
219 | return true; | |
220 | } | |
221 | } | |
222 | ||
223 | if (!strncmp(name, "ovs-", 4)) { | |
224 | struct sset types; | |
225 | const char *type; | |
226 | ||
227 | sset_init(&types); | |
228 | dp_enumerate_types(&types); | |
229 | SSET_FOR_EACH (type, &types) { | |
230 | if (!strcmp(name+4, type)) { | |
231 | sset_destroy(&types); | |
232 | return true; | |
233 | } | |
234 | } | |
235 | sset_destroy(&types); | |
236 | } | |
237 | ||
238 | return false; | |
239 | } | |
240 | ||
18812dff BP |
241 | /* Opens the network device named 'name' (e.g. "eth0") of the specified 'type' |
242 | * (e.g. "system") and returns zero if successful, otherwise a positive errno | |
243 | * value. On success, sets '*netdevp' to the new network device, otherwise to | |
244 | * null. | |
064af421 | 245 | * |
de5cdb90 BP |
246 | * Some network devices may need to be configured (with netdev_set_config()) |
247 | * before they can be used. */ | |
064af421 | 248 | int |
18812dff | 249 | netdev_open(const char *name, const char *type, struct netdev **netdevp) |
064af421 | 250 | { |
b5d57fc8 | 251 | struct netdev *netdev; |
064af421 | 252 | int error; |
064af421 | 253 | |
149f577a | 254 | *netdevp = NULL; |
559843ed | 255 | netdev_initialize(); |
6c88d577 | 256 | |
b5d57fc8 BP |
257 | netdev = shash_find_data(&netdev_shash, name); |
258 | if (!netdev) { | |
c3827f61 BP |
259 | const struct netdev_class *class; |
260 | ||
18812dff | 261 | class = netdev_lookup_provider(type); |
c3827f61 BP |
262 | if (!class) { |
263 | VLOG_WARN("could not create netdev %s of unknown type %s", | |
18812dff | 264 | name, type); |
c3827f61 BP |
265 | return EAFNOSUPPORT; |
266 | } | |
b5d57fc8 | 267 | error = class->create(class, name, &netdev); |
149f577a JG |
268 | if (error) { |
269 | return error; | |
270 | } | |
b5d57fc8 | 271 | ovs_assert(netdev->netdev_class == class); |
149f577a | 272 | |
6c88d577 | 273 | } |
b5d57fc8 | 274 | netdev->ref_cnt++; |
064af421 | 275 | |
b5d57fc8 BP |
276 | *netdevp = netdev; |
277 | return 0; | |
064af421 BP |
278 | } |
279 | ||
e20ae811 EJ |
280 | /* Returns a reference to 'netdev_' for the caller to own. Returns null if |
281 | * 'netdev_' is null. */ | |
0bb0393a BP |
282 | struct netdev * |
283 | netdev_ref(const struct netdev *netdev_) | |
284 | { | |
285 | struct netdev *netdev = CONST_CAST(struct netdev *, netdev_); | |
286 | ||
e20ae811 EJ |
287 | if (netdev) { |
288 | ovs_assert(netdev->ref_cnt > 0); | |
289 | netdev->ref_cnt++; | |
290 | } | |
0bb0393a BP |
291 | return netdev; |
292 | } | |
293 | ||
149f577a JG |
294 | /* Reconfigures the device 'netdev' with 'args'. 'args' may be empty |
295 | * or NULL if none are needed. */ | |
296 | int | |
79f1cbe9 | 297 | netdev_set_config(struct netdev *netdev, const struct smap *args) |
149f577a | 298 | { |
b5d57fc8 | 299 | if (netdev->netdev_class->set_config) { |
79f1cbe9 | 300 | struct smap no_args = SMAP_INITIALIZER(&no_args); |
b5d57fc8 BP |
301 | return netdev->netdev_class->set_config(netdev, |
302 | args ? args : &no_args); | |
79f1cbe9 | 303 | } else if (args && !smap_is_empty(args)) { |
de5cdb90 BP |
304 | VLOG_WARN("%s: arguments provided to device that is not configurable", |
305 | netdev_get_name(netdev)); | |
149f577a JG |
306 | } |
307 | ||
308 | return 0; | |
309 | } | |
310 | ||
de5cdb90 | 311 | /* Returns the current configuration for 'netdev' in 'args'. The caller must |
79f1cbe9 | 312 | * have already initialized 'args' with smap_init(). Returns 0 on success, in |
de5cdb90 BP |
313 | * which case 'args' will be filled with 'netdev''s configuration. On failure |
314 | * returns a positive errno value, in which case 'args' will be empty. | |
6d9e6eb4 | 315 | * |
de5cdb90 | 316 | * The caller owns 'args' and its contents and must eventually free them with |
79f1cbe9 | 317 | * smap_destroy(). */ |
de5cdb90 | 318 | int |
79f1cbe9 | 319 | netdev_get_config(const struct netdev *netdev, struct smap *args) |
6d9e6eb4 | 320 | { |
de5cdb90 BP |
321 | int error; |
322 | ||
79f1cbe9 | 323 | smap_clear(args); |
b5d57fc8 BP |
324 | if (netdev->netdev_class->get_config) { |
325 | error = netdev->netdev_class->get_config(netdev, args); | |
de5cdb90 | 326 | if (error) { |
79f1cbe9 | 327 | smap_clear(args); |
de5cdb90 BP |
328 | } |
329 | } else { | |
330 | error = 0; | |
331 | } | |
332 | ||
333 | return error; | |
6d9e6eb4 BP |
334 | } |
335 | ||
f431bf7d EJ |
336 | const struct netdev_tunnel_config * |
337 | netdev_get_tunnel_config(const struct netdev *netdev) | |
338 | { | |
b5d57fc8 BP |
339 | if (netdev->netdev_class->get_tunnel_config) { |
340 | return netdev->netdev_class->get_tunnel_config(netdev); | |
f431bf7d EJ |
341 | } else { |
342 | return NULL; | |
343 | } | |
344 | } | |
345 | ||
4b609110 | 346 | static void |
b5d57fc8 | 347 | netdev_unref(struct netdev *dev) |
4b609110 BP |
348 | { |
349 | ovs_assert(dev->ref_cnt); | |
350 | if (!--dev->ref_cnt) { | |
b5d57fc8 | 351 | netdev_uninit(dev, true); |
4b609110 BP |
352 | } |
353 | } | |
354 | ||
064af421 BP |
355 | /* Closes and destroys 'netdev'. */ |
356 | void | |
357 | netdev_close(struct netdev *netdev) | |
358 | { | |
359 | if (netdev) { | |
b5d57fc8 | 360 | netdev_unref(netdev); |
064af421 BP |
361 | } |
362 | } | |
363 | ||
a75531e5 BP |
364 | /* Parses 'netdev_name_', which is of the form [type@]name into its component |
365 | * pieces. 'name' and 'type' must be freed by the caller. */ | |
366 | void | |
367 | netdev_parse_name(const char *netdev_name_, char **name, char **type) | |
368 | { | |
369 | char *netdev_name = xstrdup(netdev_name_); | |
370 | char *separator; | |
371 | ||
372 | separator = strchr(netdev_name, '@'); | |
373 | if (separator) { | |
374 | *separator = '\0'; | |
375 | *type = netdev_name; | |
376 | *name = xstrdup(separator + 1); | |
377 | } else { | |
378 | *name = netdev_name; | |
379 | *type = xstrdup("system"); | |
380 | } | |
381 | } | |
382 | ||
7b6b0ef4 | 383 | int |
796223f5 | 384 | netdev_rx_open(struct netdev *netdev, struct netdev_rx **rxp) |
7b6b0ef4 | 385 | { |
796223f5 | 386 | int error; |
7b6b0ef4 | 387 | |
b5d57fc8 BP |
388 | error = (netdev->netdev_class->rx_open |
389 | ? netdev->netdev_class->rx_open(netdev, rxp) | |
796223f5 BP |
390 | : EOPNOTSUPP); |
391 | if (!error) { | |
b5d57fc8 BP |
392 | ovs_assert((*rxp)->netdev == netdev); |
393 | netdev->ref_cnt++; | |
796223f5 BP |
394 | } else { |
395 | *rxp = NULL; | |
396 | } | |
397 | return error; | |
398 | } | |
399 | ||
400 | void | |
401 | netdev_rx_close(struct netdev_rx *rx) | |
402 | { | |
403 | if (rx) { | |
b5d57fc8 | 404 | struct netdev *dev = rx->netdev; |
796223f5 BP |
405 | |
406 | rx->rx_class->destroy(rx); | |
b5d57fc8 | 407 | netdev_unref(dev); |
796223f5 | 408 | } |
7b6b0ef4 BP |
409 | } |
410 | ||
064af421 | 411 | int |
796223f5 | 412 | netdev_rx_recv(struct netdev_rx *rx, struct ofpbuf *buffer) |
064af421 | 413 | { |
8b61709d | 414 | int retval; |
064af421 | 415 | |
cb22974d BP |
416 | ovs_assert(buffer->size == 0); |
417 | ovs_assert(ofpbuf_tailroom(buffer) >= ETH_TOTAL_MIN); | |
8b61709d | 418 | |
796223f5 | 419 | retval = rx->rx_class->recv(rx, buffer->data, ofpbuf_tailroom(buffer)); |
8b61709d | 420 | if (retval >= 0) { |
064af421 | 421 | COVERAGE_INC(netdev_received); |
8b61709d BP |
422 | buffer->size += retval; |
423 | if (buffer->size < ETH_TOTAL_MIN) { | |
424 | ofpbuf_put_zeros(buffer, ETH_TOTAL_MIN - buffer->size); | |
425 | } | |
064af421 | 426 | return 0; |
8b61709d BP |
427 | } else { |
428 | return -retval; | |
064af421 BP |
429 | } |
430 | } | |
431 | ||
064af421 | 432 | void |
796223f5 | 433 | netdev_rx_wait(struct netdev_rx *rx) |
064af421 | 434 | { |
796223f5 | 435 | rx->rx_class->wait(rx); |
064af421 BP |
436 | } |
437 | ||
064af421 | 438 | int |
796223f5 | 439 | netdev_rx_drain(struct netdev_rx *rx) |
064af421 | 440 | { |
796223f5 | 441 | return rx->rx_class->drain ? rx->rx_class->drain(rx) : 0; |
064af421 BP |
442 | } |
443 | ||
444 | /* Sends 'buffer' on 'netdev'. Returns 0 if successful, otherwise a positive | |
445 | * errno value. Returns EAGAIN without blocking if the packet cannot be queued | |
446 | * immediately. Returns EMSGSIZE if a partial packet was transmitted or if | |
447 | * the packet is too big or too small to transmit on the device. | |
448 | * | |
449 | * The caller retains ownership of 'buffer' in all cases. | |
450 | * | |
451 | * The kernel maintains a packet transmission queue, so the caller is not | |
1ac98180 BP |
452 | * expected to do additional queuing of packets. |
453 | * | |
454 | * Some network devices may not implement support for this function. In such | |
455 | * cases this function will always return EOPNOTSUPP. */ | |
064af421 BP |
456 | int |
457 | netdev_send(struct netdev *netdev, const struct ofpbuf *buffer) | |
458 | { | |
1ac98180 BP |
459 | int error; |
460 | ||
b5d57fc8 BP |
461 | error = (netdev->netdev_class->send |
462 | ? netdev->netdev_class->send(netdev, buffer->data, buffer->size) | |
463 | : EOPNOTSUPP); | |
8b61709d | 464 | if (!error) { |
064af421 | 465 | COVERAGE_INC(netdev_sent); |
064af421 | 466 | } |
8b61709d | 467 | return error; |
064af421 BP |
468 | } |
469 | ||
470 | /* Registers with the poll loop to wake up from the next call to poll_block() | |
471 | * when the packet transmission queue has sufficient room to transmit a packet | |
472 | * with netdev_send(). | |
473 | * | |
474 | * The kernel maintains a packet transmission queue, so the client is not | |
475 | * expected to do additional queuing of packets. Thus, this function is | |
476 | * unlikely to ever be used. It is included for completeness. */ | |
477 | void | |
478 | netdev_send_wait(struct netdev *netdev) | |
479 | { | |
b5d57fc8 BP |
480 | if (netdev->netdev_class->send_wait) { |
481 | netdev->netdev_class->send_wait(netdev); | |
1ac98180 | 482 | } |
064af421 BP |
483 | } |
484 | ||
485 | /* Attempts to set 'netdev''s MAC address to 'mac'. Returns 0 if successful, | |
486 | * otherwise a positive errno value. */ | |
487 | int | |
488 | netdev_set_etheraddr(struct netdev *netdev, const uint8_t mac[ETH_ADDR_LEN]) | |
489 | { | |
b5d57fc8 | 490 | return netdev->netdev_class->set_etheraddr(netdev, mac); |
064af421 BP |
491 | } |
492 | ||
80992a35 BP |
493 | /* Retrieves 'netdev''s MAC address. If successful, returns 0 and copies the |
494 | * the MAC address into 'mac'. On failure, returns a positive errno value and | |
495 | * clears 'mac' to all-zeros. */ | |
496 | int | |
497 | netdev_get_etheraddr(const struct netdev *netdev, uint8_t mac[ETH_ADDR_LEN]) | |
064af421 | 498 | { |
b5d57fc8 | 499 | return netdev->netdev_class->get_etheraddr(netdev, mac); |
064af421 BP |
500 | } |
501 | ||
502 | /* Returns the name of the network device that 'netdev' represents, | |
503 | * e.g. "eth0". The caller must not modify or free the returned string. */ | |
504 | const char * | |
505 | netdev_get_name(const struct netdev *netdev) | |
506 | { | |
b5d57fc8 | 507 | return netdev->name; |
064af421 BP |
508 | } |
509 | ||
3d222126 BP |
510 | /* Retrieves the MTU of 'netdev'. The MTU is the maximum size of transmitted |
511 | * (and received) packets, in bytes, not including the hardware header; thus, | |
512 | * this is typically 1500 bytes for Ethernet devices. | |
513 | * | |
9b020780 PS |
514 | * If successful, returns 0 and stores the MTU size in '*mtup'. Returns |
515 | * EOPNOTSUPP if 'netdev' does not have an MTU (as e.g. some tunnels do not). | |
14622f22 BP |
516 | * On other failure, returns a positive errno value. On failure, sets '*mtup' |
517 | * to 0. */ | |
064af421 | 518 | int |
3d222126 | 519 | netdev_get_mtu(const struct netdev *netdev, int *mtup) |
064af421 | 520 | { |
b5d57fc8 | 521 | const struct netdev_class *class = netdev->netdev_class; |
14622f22 BP |
522 | int error; |
523 | ||
524 | error = class->get_mtu ? class->get_mtu(netdev, mtup) : EOPNOTSUPP; | |
525 | if (error) { | |
526 | *mtup = 0; | |
527 | if (error != EOPNOTSUPP) { | |
90a6637d | 528 | VLOG_DBG_RL(&rl, "failed to retrieve MTU for network device %s: " |
10a89ef0 | 529 | "%s", netdev_get_name(netdev), ovs_strerror(error)); |
14622f22 | 530 | } |
8b61709d BP |
531 | } |
532 | return error; | |
064af421 BP |
533 | } |
534 | ||
9b020780 PS |
535 | /* Sets the MTU of 'netdev'. The MTU is the maximum size of transmitted |
536 | * (and received) packets, in bytes. | |
537 | * | |
538 | * If successful, returns 0. Returns EOPNOTSUPP if 'netdev' does not have an | |
539 | * MTU (as e.g. some tunnels do not). On other failure, returns a positive | |
540 | * errno value. */ | |
541 | int | |
542 | netdev_set_mtu(const struct netdev *netdev, int mtu) | |
543 | { | |
b5d57fc8 | 544 | const struct netdev_class *class = netdev->netdev_class; |
14622f22 | 545 | int error; |
9b020780 | 546 | |
14622f22 | 547 | error = class->set_mtu ? class->set_mtu(netdev, mtu) : EOPNOTSUPP; |
9b020780 | 548 | if (error && error != EOPNOTSUPP) { |
90a6637d | 549 | VLOG_DBG_RL(&rl, "failed to set MTU for network device %s: %s", |
10a89ef0 | 550 | netdev_get_name(netdev), ovs_strerror(error)); |
9b020780 PS |
551 | } |
552 | ||
553 | return error; | |
554 | } | |
555 | ||
9ab3d9a3 BP |
556 | /* Returns the ifindex of 'netdev', if successful, as a positive number. On |
557 | * failure, returns a negative errno value. | |
558 | * | |
559 | * The desired semantics of the ifindex value are a combination of those | |
560 | * specified by POSIX for if_nametoindex() and by SNMP for ifIndex. An ifindex | |
561 | * value should be unique within a host and remain stable at least until | |
562 | * reboot. SNMP says an ifindex "ranges between 1 and the value of ifNumber" | |
563 | * but many systems do not follow this rule anyhow. | |
4c0f1780 JG |
564 | * |
565 | * Some network devices may not implement support for this function. In such | |
566 | * cases this function will always return -EOPNOTSUPP. | |
9ab3d9a3 BP |
567 | */ |
568 | int | |
569 | netdev_get_ifindex(const struct netdev *netdev) | |
570 | { | |
4c0f1780 JG |
571 | int (*get_ifindex)(const struct netdev *); |
572 | ||
b5d57fc8 | 573 | get_ifindex = netdev->netdev_class->get_ifindex; |
4c0f1780 JG |
574 | |
575 | return get_ifindex ? get_ifindex(netdev) : -EOPNOTSUPP; | |
9ab3d9a3 BP |
576 | } |
577 | ||
064af421 BP |
578 | /* Stores the features supported by 'netdev' into each of '*current', |
579 | * '*advertised', '*supported', and '*peer' that are non-null. Each value is a | |
580 | * bitmap of "enum ofp_port_features" bits, in host byte order. Returns 0 if | |
581 | * successful, otherwise a positive errno value. On failure, all of the | |
4c0f1780 JG |
582 | * passed-in values are set to 0. |
583 | * | |
584 | * Some network devices may not implement support for this function. In such | |
c1fdab01 | 585 | * cases this function will always return EOPNOTSUPP. */ |
064af421 | 586 | int |
6f2f5cce | 587 | netdev_get_features(const struct netdev *netdev, |
6c038611 BP |
588 | enum netdev_features *current, |
589 | enum netdev_features *advertised, | |
590 | enum netdev_features *supported, | |
591 | enum netdev_features *peer) | |
064af421 | 592 | { |
6f2f5cce | 593 | int (*get_features)(const struct netdev *netdev, |
6c038611 BP |
594 | enum netdev_features *current, |
595 | enum netdev_features *advertised, | |
596 | enum netdev_features *supported, | |
597 | enum netdev_features *peer); | |
598 | enum netdev_features dummy[4]; | |
7671589a BP |
599 | int error; |
600 | ||
601 | if (!current) { | |
602 | current = &dummy[0]; | |
603 | } | |
604 | if (!advertised) { | |
605 | advertised = &dummy[1]; | |
606 | } | |
607 | if (!supported) { | |
608 | supported = &dummy[2]; | |
609 | } | |
610 | if (!peer) { | |
611 | peer = &dummy[3]; | |
612 | } | |
613 | ||
b5d57fc8 | 614 | get_features = netdev->netdev_class->get_features; |
4c0f1780 | 615 | error = get_features |
a00ca915 EJ |
616 | ? get_features(netdev, current, advertised, supported, |
617 | peer) | |
4c0f1780 | 618 | : EOPNOTSUPP; |
7671589a BP |
619 | if (error) { |
620 | *current = *advertised = *supported = *peer = 0; | |
621 | } | |
622 | return error; | |
064af421 BP |
623 | } |
624 | ||
6c038611 BP |
625 | /* Returns the maximum speed of a network connection that has the NETDEV_F_* |
626 | * bits in 'features', in bits per second. If no bits that indicate a speed | |
d02a5f8e | 627 | * are set in 'features', returns 'default_bps'. */ |
622ee2cf | 628 | uint64_t |
d02a5f8e BP |
629 | netdev_features_to_bps(enum netdev_features features, |
630 | uint64_t default_bps) | |
622ee2cf BP |
631 | { |
632 | enum { | |
6c038611 BP |
633 | F_1000000MB = NETDEV_F_1TB_FD, |
634 | F_100000MB = NETDEV_F_100GB_FD, | |
635 | F_40000MB = NETDEV_F_40GB_FD, | |
636 | F_10000MB = NETDEV_F_10GB_FD, | |
637 | F_1000MB = NETDEV_F_1GB_HD | NETDEV_F_1GB_FD, | |
638 | F_100MB = NETDEV_F_100MB_HD | NETDEV_F_100MB_FD, | |
639 | F_10MB = NETDEV_F_10MB_HD | NETDEV_F_10MB_FD | |
622ee2cf BP |
640 | }; |
641 | ||
6c038611 BP |
642 | return ( features & F_1000000MB ? UINT64_C(1000000000000) |
643 | : features & F_100000MB ? UINT64_C(100000000000) | |
644 | : features & F_40000MB ? UINT64_C(40000000000) | |
645 | : features & F_10000MB ? UINT64_C(10000000000) | |
646 | : features & F_1000MB ? UINT64_C(1000000000) | |
647 | : features & F_100MB ? UINT64_C(100000000) | |
648 | : features & F_10MB ? UINT64_C(10000000) | |
d02a5f8e | 649 | : default_bps); |
622ee2cf BP |
650 | } |
651 | ||
6c038611 BP |
652 | /* Returns true if any of the NETDEV_F_* bits that indicate a full-duplex link |
653 | * are set in 'features', otherwise false. */ | |
622ee2cf | 654 | bool |
6c038611 | 655 | netdev_features_is_full_duplex(enum netdev_features features) |
622ee2cf | 656 | { |
6c038611 BP |
657 | return (features & (NETDEV_F_10MB_FD | NETDEV_F_100MB_FD | NETDEV_F_1GB_FD |
658 | | NETDEV_F_10GB_FD | NETDEV_F_40GB_FD | |
659 | | NETDEV_F_100GB_FD | NETDEV_F_1TB_FD)) != 0; | |
622ee2cf BP |
660 | } |
661 | ||
8b61709d BP |
662 | /* Set the features advertised by 'netdev' to 'advertise'. Returns 0 if |
663 | * successful, otherwise a positive errno value. */ | |
064af421 | 664 | int |
6c038611 BP |
665 | netdev_set_advertisements(struct netdev *netdev, |
666 | enum netdev_features advertise) | |
064af421 | 667 | { |
b5d57fc8 BP |
668 | return (netdev->netdev_class->set_advertisements |
669 | ? netdev->netdev_class->set_advertisements( | |
a4af0040 | 670 | netdev, advertise) |
8b61709d | 671 | : EOPNOTSUPP); |
064af421 BP |
672 | } |
673 | ||
f1acd62b BP |
674 | /* If 'netdev' has an assigned IPv4 address, sets '*address' to that address |
675 | * and '*netmask' to its netmask and returns 0. Otherwise, returns a positive | |
676 | * errno value and sets '*address' to 0 (INADDR_ANY). | |
8b61709d BP |
677 | * |
678 | * The following error values have well-defined meanings: | |
679 | * | |
680 | * - EADDRNOTAVAIL: 'netdev' has no assigned IPv4 address. | |
681 | * | |
682 | * - EOPNOTSUPP: No IPv4 network stack attached to 'netdev'. | |
683 | * | |
b53055f4 | 684 | * 'address' or 'netmask' or both may be null, in which case the address or |
c1fdab01 | 685 | * netmask is not reported. */ |
6b9bd979 | 686 | int |
f1acd62b BP |
687 | netdev_get_in4(const struct netdev *netdev, |
688 | struct in_addr *address_, struct in_addr *netmask_) | |
064af421 | 689 | { |
f1acd62b BP |
690 | struct in_addr address; |
691 | struct in_addr netmask; | |
064af421 BP |
692 | int error; |
693 | ||
b5d57fc8 BP |
694 | error = (netdev->netdev_class->get_in4 |
695 | ? netdev->netdev_class->get_in4(netdev, | |
a4af0040 | 696 | &address, &netmask) |
8b61709d | 697 | : EOPNOTSUPP); |
f1acd62b BP |
698 | if (address_) { |
699 | address_->s_addr = error ? 0 : address.s_addr; | |
700 | } | |
701 | if (netmask_) { | |
702 | netmask_->s_addr = error ? 0 : netmask.s_addr; | |
064af421 BP |
703 | } |
704 | return error; | |
705 | } | |
706 | ||
707 | /* Assigns 'addr' as 'netdev''s IPv4 address and 'mask' as its netmask. If | |
708 | * 'addr' is INADDR_ANY, 'netdev''s IPv4 address is cleared. Returns a | |
709 | * positive errno value. */ | |
710 | int | |
711 | netdev_set_in4(struct netdev *netdev, struct in_addr addr, struct in_addr mask) | |
712 | { | |
b5d57fc8 BP |
713 | return (netdev->netdev_class->set_in4 |
714 | ? netdev->netdev_class->set_in4(netdev, addr, mask) | |
8b61709d | 715 | : EOPNOTSUPP); |
064af421 BP |
716 | } |
717 | ||
733adf2a LG |
718 | /* Obtains ad IPv4 address from device name and save the address in |
719 | * in4. Returns 0 if successful, otherwise a positive errno value. | |
720 | */ | |
721 | int | |
722 | netdev_get_in4_by_name(const char *device_name, struct in_addr *in4) | |
723 | { | |
724 | struct netdev *netdev; | |
725 | int error; | |
726 | ||
727 | error = netdev_open(device_name, "system", &netdev); | |
728 | if (error) { | |
729 | in4->s_addr = htonl(0); | |
730 | return error; | |
731 | } | |
732 | ||
733 | error = netdev_get_in4(netdev, in4, NULL); | |
734 | netdev_close(netdev); | |
735 | return error; | |
736 | } | |
737 | ||
0efaf4b5 BP |
738 | /* Adds 'router' as a default IP gateway for the TCP/IP stack that corresponds |
739 | * to 'netdev'. */ | |
064af421 | 740 | int |
8b61709d | 741 | netdev_add_router(struct netdev *netdev, struct in_addr router) |
064af421 | 742 | { |
064af421 | 743 | COVERAGE_INC(netdev_add_router); |
b5d57fc8 BP |
744 | return (netdev->netdev_class->add_router |
745 | ? netdev->netdev_class->add_router(netdev, router) | |
8b61709d | 746 | : EOPNOTSUPP); |
064af421 BP |
747 | } |
748 | ||
f1acd62b BP |
749 | /* Looks up the next hop for 'host' for the TCP/IP stack that corresponds to |
750 | * 'netdev'. If a route cannot not be determined, sets '*next_hop' to 0, | |
751 | * '*netdev_name' to null, and returns a positive errno value. Otherwise, if a | |
752 | * next hop is found, stores the next hop gateway's address (0 if 'host' is on | |
753 | * a directly connected network) in '*next_hop' and a copy of the name of the | |
754 | * device to reach 'host' in '*netdev_name', and returns 0. The caller is | |
755 | * responsible for freeing '*netdev_name' (by calling free()). */ | |
756 | int | |
757 | netdev_get_next_hop(const struct netdev *netdev, | |
758 | const struct in_addr *host, struct in_addr *next_hop, | |
759 | char **netdev_name) | |
760 | { | |
b5d57fc8 BP |
761 | int error = (netdev->netdev_class->get_next_hop |
762 | ? netdev->netdev_class->get_next_hop( | |
a4af0040 | 763 | host, next_hop, netdev_name) |
f1acd62b | 764 | : EOPNOTSUPP); |
064af421 | 765 | if (error) { |
f1acd62b BP |
766 | next_hop->s_addr = 0; |
767 | *netdev_name = NULL; | |
064af421 BP |
768 | } |
769 | return error; | |
770 | } | |
771 | ||
79f1cbe9 | 772 | /* Populates 'smap' with status information. |
ea763e0e | 773 | * |
79f1cbe9 EJ |
774 | * Populates 'smap' with 'netdev' specific status information. This |
775 | * information may be used to populate the status column of the Interface table | |
776 | * as defined in ovs-vswitchd.conf.db(5). */ | |
ea763e0e | 777 | int |
275707c3 | 778 | netdev_get_status(const struct netdev *netdev, struct smap *smap) |
ea83a2fc | 779 | { |
b5d57fc8 BP |
780 | return (netdev->netdev_class->get_status |
781 | ? netdev->netdev_class->get_status(netdev, smap) | |
ea763e0e | 782 | : EOPNOTSUPP); |
ea83a2fc EJ |
783 | } |
784 | ||
8b61709d BP |
785 | /* If 'netdev' has an assigned IPv6 address, sets '*in6' to that address and |
786 | * returns 0. Otherwise, returns a positive errno value and sets '*in6' to | |
787 | * all-zero-bits (in6addr_any). | |
788 | * | |
789 | * The following error values have well-defined meanings: | |
790 | * | |
791 | * - EADDRNOTAVAIL: 'netdev' has no assigned IPv6 address. | |
792 | * | |
793 | * - EOPNOTSUPP: No IPv6 network stack attached to 'netdev'. | |
794 | * | |
795 | * 'in6' may be null, in which case the address itself is not reported. */ | |
064af421 | 796 | int |
8b61709d | 797 | netdev_get_in6(const struct netdev *netdev, struct in6_addr *in6) |
064af421 | 798 | { |
8b61709d BP |
799 | struct in6_addr dummy; |
800 | int error; | |
b1bf7d43 | 801 | |
b5d57fc8 BP |
802 | error = (netdev->netdev_class->get_in6 |
803 | ? netdev->netdev_class->get_in6(netdev, | |
a4af0040 | 804 | in6 ? in6 : &dummy) |
8b61709d BP |
805 | : EOPNOTSUPP); |
806 | if (error && in6) { | |
807 | memset(in6, 0, sizeof *in6); | |
b1bf7d43 | 808 | } |
8b61709d | 809 | return error; |
064af421 BP |
810 | } |
811 | ||
812 | /* On 'netdev', turns off the flags in 'off' and then turns on the flags in | |
4b609110 | 813 | * 'on'. Returns 0 if successful, otherwise a positive errno value. */ |
064af421 BP |
814 | static int |
815 | do_update_flags(struct netdev *netdev, enum netdev_flags off, | |
8b61709d | 816 | enum netdev_flags on, enum netdev_flags *old_flagsp, |
4b609110 | 817 | struct netdev_saved_flags **sfp) |
064af421 | 818 | { |
4b609110 | 819 | struct netdev_saved_flags *sf = NULL; |
8b61709d | 820 | enum netdev_flags old_flags; |
064af421 BP |
821 | int error; |
822 | ||
b5d57fc8 BP |
823 | error = netdev->netdev_class->update_flags(netdev, off & ~on, on, |
824 | &old_flags); | |
064af421 | 825 | if (error) { |
8b61709d BP |
826 | VLOG_WARN_RL(&rl, "failed to %s flags for network device %s: %s", |
827 | off || on ? "set" : "get", netdev_get_name(netdev), | |
10a89ef0 | 828 | ovs_strerror(error)); |
8b61709d | 829 | old_flags = 0; |
4b609110 | 830 | } else if ((off || on) && sfp) { |
8b61709d BP |
831 | enum netdev_flags new_flags = (old_flags & ~off) | on; |
832 | enum netdev_flags changed_flags = old_flags ^ new_flags; | |
833 | if (changed_flags) { | |
4b609110 | 834 | *sfp = sf = xmalloc(sizeof *sf); |
b5d57fc8 BP |
835 | sf->netdev = netdev; |
836 | list_push_front(&netdev->saved_flags_list, &sf->node); | |
4b609110 BP |
837 | sf->saved_flags = changed_flags; |
838 | sf->saved_values = changed_flags & new_flags; | |
839 | ||
b5d57fc8 | 840 | netdev->ref_cnt++; |
8b61709d | 841 | } |
064af421 | 842 | } |
4b609110 | 843 | |
8b61709d BP |
844 | if (old_flagsp) { |
845 | *old_flagsp = old_flags; | |
064af421 | 846 | } |
4b609110 BP |
847 | if (sfp) { |
848 | *sfp = sf; | |
849 | } | |
850 | ||
064af421 BP |
851 | return error; |
852 | } | |
853 | ||
8b61709d BP |
854 | /* Obtains the current flags for 'netdev' and stores them into '*flagsp'. |
855 | * Returns 0 if successful, otherwise a positive errno value. On failure, | |
856 | * stores 0 into '*flagsp'. */ | |
857 | int | |
858 | netdev_get_flags(const struct netdev *netdev_, enum netdev_flags *flagsp) | |
859 | { | |
ebc56baa | 860 | struct netdev *netdev = CONST_CAST(struct netdev *, netdev_); |
4b609110 | 861 | return do_update_flags(netdev, 0, 0, flagsp, NULL); |
8b61709d BP |
862 | } |
863 | ||
064af421 | 864 | /* Sets the flags for 'netdev' to 'flags'. |
064af421 BP |
865 | * Returns 0 if successful, otherwise a positive errno value. */ |
866 | int | |
867 | netdev_set_flags(struct netdev *netdev, enum netdev_flags flags, | |
4b609110 | 868 | struct netdev_saved_flags **sfp) |
064af421 | 869 | { |
4b609110 | 870 | return do_update_flags(netdev, -1, flags, NULL, sfp); |
064af421 BP |
871 | } |
872 | ||
4b609110 BP |
873 | /* Turns on the specified 'flags' on 'netdev': |
874 | * | |
875 | * - On success, returns 0. If 'sfp' is nonnull, sets '*sfp' to a newly | |
876 | * allocated 'struct netdev_saved_flags *' that may be passed to | |
877 | * netdev_restore_flags() to restore the original values of 'flags' on | |
878 | * 'netdev' (this will happen automatically at program termination if | |
879 | * netdev_restore_flags() is never called) , or to NULL if no flags were | |
880 | * actually changed. | |
881 | * | |
882 | * - On failure, returns a positive errno value. If 'sfp' is nonnull, sets | |
883 | * '*sfp' to NULL. */ | |
064af421 BP |
884 | int |
885 | netdev_turn_flags_on(struct netdev *netdev, enum netdev_flags flags, | |
4b609110 | 886 | struct netdev_saved_flags **sfp) |
064af421 | 887 | { |
4b609110 | 888 | return do_update_flags(netdev, 0, flags, NULL, sfp); |
064af421 BP |
889 | } |
890 | ||
4b609110 BP |
891 | /* Turns off the specified 'flags' on 'netdev'. See netdev_turn_flags_on() for |
892 | * details of the interface. */ | |
064af421 BP |
893 | int |
894 | netdev_turn_flags_off(struct netdev *netdev, enum netdev_flags flags, | |
4b609110 BP |
895 | struct netdev_saved_flags **sfp) |
896 | { | |
897 | return do_update_flags(netdev, flags, 0, NULL, sfp); | |
898 | } | |
899 | ||
900 | /* Restores the flags that were saved in 'sf', and destroys 'sf'. | |
901 | * Does nothing if 'sf' is NULL. */ | |
902 | void | |
903 | netdev_restore_flags(struct netdev_saved_flags *sf) | |
064af421 | 904 | { |
4b609110 | 905 | if (sf) { |
b5d57fc8 | 906 | struct netdev *netdev = sf->netdev; |
4b609110 BP |
907 | enum netdev_flags old_flags; |
908 | ||
b5d57fc8 BP |
909 | netdev->netdev_class->update_flags(netdev, |
910 | sf->saved_flags & sf->saved_values, | |
911 | sf->saved_flags & ~sf->saved_values, | |
912 | &old_flags); | |
4b609110 BP |
913 | list_remove(&sf->node); |
914 | free(sf); | |
915 | ||
b5d57fc8 | 916 | netdev_unref(netdev); |
4b609110 | 917 | } |
064af421 BP |
918 | } |
919 | ||
920 | /* Looks up the ARP table entry for 'ip' on 'netdev'. If one exists and can be | |
921 | * successfully retrieved, it stores the corresponding MAC address in 'mac' and | |
922 | * returns 0. Otherwise, it returns a positive errno value; in particular, | |
8b61709d | 923 | * ENXIO indicates that there is no ARP table entry for 'ip' on 'netdev'. */ |
064af421 | 924 | int |
8b61709d | 925 | netdev_arp_lookup(const struct netdev *netdev, |
dbba996b | 926 | ovs_be32 ip, uint8_t mac[ETH_ADDR_LEN]) |
064af421 | 927 | { |
b5d57fc8 | 928 | int error = (netdev->netdev_class->arp_lookup |
15aee116 | 929 | ? netdev->netdev_class->arp_lookup(netdev, ip, mac) |
8b61709d | 930 | : EOPNOTSUPP); |
064af421 | 931 | if (error) { |
8b61709d | 932 | memset(mac, 0, ETH_ADDR_LEN); |
064af421 | 933 | } |
8b61709d | 934 | return error; |
064af421 BP |
935 | } |
936 | ||
85da620e JG |
937 | /* Returns true if carrier is active (link light is on) on 'netdev'. */ |
938 | bool | |
939 | netdev_get_carrier(const struct netdev *netdev) | |
064af421 | 940 | { |
85da620e JG |
941 | int error; |
942 | enum netdev_flags flags; | |
943 | bool carrier; | |
944 | ||
945 | netdev_get_flags(netdev, &flags); | |
946 | if (!(flags & NETDEV_UP)) { | |
947 | return false; | |
948 | } | |
949 | ||
b5d57fc8 | 950 | if (!netdev->netdev_class->get_carrier) { |
85da620e JG |
951 | return true; |
952 | } | |
953 | ||
15aee116 | 954 | error = netdev->netdev_class->get_carrier(netdev, &carrier); |
8b61709d | 955 | if (error) { |
85da620e | 956 | VLOG_DBG("%s: failed to get network device carrier status, assuming " |
10a89ef0 | 957 | "down: %s", netdev_get_name(netdev), ovs_strerror(error)); |
85da620e | 958 | carrier = false; |
064af421 | 959 | } |
85da620e JG |
960 | |
961 | return carrier; | |
064af421 BP |
962 | } |
963 | ||
65c3058c EJ |
964 | /* Returns the number of times 'netdev''s carrier has changed. */ |
965 | long long int | |
966 | netdev_get_carrier_resets(const struct netdev *netdev) | |
967 | { | |
b5d57fc8 BP |
968 | return (netdev->netdev_class->get_carrier_resets |
969 | ? netdev->netdev_class->get_carrier_resets(netdev) | |
65c3058c EJ |
970 | : 0); |
971 | } | |
972 | ||
1670c579 EJ |
973 | /* Attempts to force netdev_get_carrier() to poll 'netdev''s MII registers for |
974 | * link status instead of checking 'netdev''s carrier. 'netdev''s MII | |
975 | * registers will be polled once ever 'interval' milliseconds. If 'netdev' | |
976 | * does not support MII, another method may be used as a fallback. If | |
977 | * 'interval' is less than or equal to zero, reverts netdev_get_carrier() to | |
978 | * its normal behavior. | |
979 | * | |
980 | * Returns 0 if successful, otherwise a positive errno value. */ | |
981 | int | |
982 | netdev_set_miimon_interval(struct netdev *netdev, long long int interval) | |
63331829 | 983 | { |
b5d57fc8 BP |
984 | return (netdev->netdev_class->set_miimon_interval |
985 | ? netdev->netdev_class->set_miimon_interval(netdev, interval) | |
1670c579 | 986 | : EOPNOTSUPP); |
63331829 EJ |
987 | } |
988 | ||
887fd0ba | 989 | /* Retrieves current device stats for 'netdev'. */ |
064af421 BP |
990 | int |
991 | netdev_get_stats(const struct netdev *netdev, struct netdev_stats *stats) | |
992 | { | |
993 | int error; | |
994 | ||
995 | COVERAGE_INC(netdev_get_stats); | |
b5d57fc8 BP |
996 | error = (netdev->netdev_class->get_stats |
997 | ? netdev->netdev_class->get_stats(netdev, stats) | |
8b61709d | 998 | : EOPNOTSUPP); |
064af421 BP |
999 | if (error) { |
1000 | memset(stats, 0xff, sizeof *stats); | |
1001 | } | |
1002 | return error; | |
1003 | } | |
1004 | ||
8722022c BP |
1005 | /* Attempts to change the stats for 'netdev' to those provided in 'stats'. |
1006 | * Returns 0 if successful, otherwise a positive errno value. | |
1007 | * | |
1008 | * This will probably fail for most network devices. Some devices might only | |
1009 | * allow setting their stats to 0. */ | |
1010 | int | |
1011 | netdev_set_stats(struct netdev *netdev, const struct netdev_stats *stats) | |
1012 | { | |
b5d57fc8 BP |
1013 | return (netdev->netdev_class->set_stats |
1014 | ? netdev->netdev_class->set_stats(netdev, stats) | |
8722022c BP |
1015 | : EOPNOTSUPP); |
1016 | } | |
1017 | ||
8b61709d BP |
1018 | /* Attempts to set input rate limiting (policing) policy, such that up to |
1019 | * 'kbits_rate' kbps of traffic is accepted, with a maximum accumulative burst | |
1020 | * size of 'kbits' kb. */ | |
064af421 | 1021 | int |
b1bf7d43 BP |
1022 | netdev_set_policing(struct netdev *netdev, uint32_t kbits_rate, |
1023 | uint32_t kbits_burst) | |
064af421 | 1024 | { |
b5d57fc8 BP |
1025 | return (netdev->netdev_class->set_policing |
1026 | ? netdev->netdev_class->set_policing(netdev, | |
a4af0040 | 1027 | kbits_rate, kbits_burst) |
8b61709d | 1028 | : EOPNOTSUPP); |
064af421 BP |
1029 | } |
1030 | ||
c1c9c9c4 BP |
1031 | /* Adds to 'types' all of the forms of QoS supported by 'netdev', or leaves it |
1032 | * empty if 'netdev' does not support QoS. Any names added to 'types' should | |
1033 | * be documented as valid for the "type" column in the "QoS" table in | |
1034 | * vswitchd/vswitch.xml (which is built as ovs-vswitchd.conf.db(8)). | |
1035 | * | |
1036 | * Every network device supports disabling QoS with a type of "", but this type | |
1037 | * will not be added to 'types'. | |
1038 | * | |
19993ef3 | 1039 | * The caller must initialize 'types' (e.g. with sset_init()) before calling |
c1c9c9c4 | 1040 | * this function. The caller is responsible for destroying 'types' (e.g. with |
19993ef3 | 1041 | * sset_destroy()) when it is no longer needed. |
c1c9c9c4 BP |
1042 | * |
1043 | * Returns 0 if successful, otherwise a positive errno value. */ | |
1044 | int | |
19993ef3 | 1045 | netdev_get_qos_types(const struct netdev *netdev, struct sset *types) |
c1c9c9c4 | 1046 | { |
b5d57fc8 | 1047 | const struct netdev_class *class = netdev->netdev_class; |
c1c9c9c4 BP |
1048 | return (class->get_qos_types |
1049 | ? class->get_qos_types(netdev, types) | |
1050 | : 0); | |
1051 | } | |
1052 | ||
1053 | /* Queries 'netdev' for its capabilities regarding the specified 'type' of QoS, | |
1054 | * which should be "" or one of the types returned by netdev_get_qos_types() | |
1055 | * for 'netdev'. Returns 0 if successful, otherwise a positive errno value. | |
1056 | * On success, initializes 'caps' with the QoS capabilities; on failure, clears | |
1057 | * 'caps' to all zeros. */ | |
1058 | int | |
1059 | netdev_get_qos_capabilities(const struct netdev *netdev, const char *type, | |
1060 | struct netdev_qos_capabilities *caps) | |
1061 | { | |
b5d57fc8 | 1062 | const struct netdev_class *class = netdev->netdev_class; |
c1c9c9c4 BP |
1063 | |
1064 | if (*type) { | |
1065 | int retval = (class->get_qos_capabilities | |
1066 | ? class->get_qos_capabilities(netdev, type, caps) | |
1067 | : EOPNOTSUPP); | |
1068 | if (retval) { | |
1069 | memset(caps, 0, sizeof *caps); | |
1070 | } | |
1071 | return retval; | |
1072 | } else { | |
1073 | /* Every netdev supports turning off QoS. */ | |
1074 | memset(caps, 0, sizeof *caps); | |
1075 | return 0; | |
1076 | } | |
1077 | } | |
1078 | ||
1079 | /* Obtains the number of queues supported by 'netdev' for the specified 'type' | |
1080 | * of QoS. Returns 0 if successful, otherwise a positive errno value. Stores | |
1081 | * the number of queues (zero on failure) in '*n_queuesp'. | |
1082 | * | |
1083 | * This is just a simple wrapper around netdev_get_qos_capabilities(). */ | |
1084 | int | |
1085 | netdev_get_n_queues(const struct netdev *netdev, | |
1086 | const char *type, unsigned int *n_queuesp) | |
1087 | { | |
1088 | struct netdev_qos_capabilities caps; | |
1089 | int retval; | |
1090 | ||
1091 | retval = netdev_get_qos_capabilities(netdev, type, &caps); | |
1092 | *n_queuesp = caps.n_queues; | |
1093 | return retval; | |
1094 | } | |
1095 | ||
1096 | /* Queries 'netdev' about its currently configured form of QoS. If successful, | |
1097 | * stores the name of the current form of QoS into '*typep', stores any details | |
1098 | * of configuration as string key-value pairs in 'details', and returns 0. On | |
1099 | * failure, sets '*typep' to NULL and returns a positive errno value. | |
1100 | * | |
1101 | * A '*typep' of "" indicates that QoS is currently disabled on 'netdev'. | |
1102 | * | |
79f1cbe9 EJ |
1103 | * The caller must initialize 'details' as an empty smap (e.g. with |
1104 | * smap_init()) before calling this function. The caller must free 'details' | |
1105 | * when it is no longer needed (e.g. with smap_destroy()). | |
c1c9c9c4 BP |
1106 | * |
1107 | * The caller must not modify or free '*typep'. | |
1108 | * | |
1109 | * '*typep' will be one of the types returned by netdev_get_qos_types() for | |
1110 | * 'netdev'. The contents of 'details' should be documented as valid for | |
1111 | * '*typep' in the "other_config" column in the "QoS" table in | |
1112 | * vswitchd/vswitch.xml (which is built as ovs-vswitchd.conf.db(8)). */ | |
1113 | int | |
1114 | netdev_get_qos(const struct netdev *netdev, | |
79f1cbe9 | 1115 | const char **typep, struct smap *details) |
c1c9c9c4 | 1116 | { |
b5d57fc8 | 1117 | const struct netdev_class *class = netdev->netdev_class; |
c1c9c9c4 BP |
1118 | int retval; |
1119 | ||
1120 | if (class->get_qos) { | |
1121 | retval = class->get_qos(netdev, typep, details); | |
1122 | if (retval) { | |
1123 | *typep = NULL; | |
79f1cbe9 | 1124 | smap_clear(details); |
c1c9c9c4 BP |
1125 | } |
1126 | return retval; | |
1127 | } else { | |
1128 | /* 'netdev' doesn't support QoS, so report that QoS is disabled. */ | |
1129 | *typep = ""; | |
1130 | return 0; | |
1131 | } | |
1132 | } | |
1133 | ||
1134 | /* Attempts to reconfigure QoS on 'netdev', changing the form of QoS to 'type' | |
1135 | * with details of configuration from 'details'. Returns 0 if successful, | |
1136 | * otherwise a positive errno value. On error, the previous QoS configuration | |
1137 | * is retained. | |
1138 | * | |
1139 | * When this function changes the type of QoS (not just 'details'), this also | |
1140 | * resets all queue configuration for 'netdev' to their defaults (which depend | |
1141 | * on the specific type of QoS). Otherwise, the queue configuration for | |
1142 | * 'netdev' is unchanged. | |
1143 | * | |
1144 | * 'type' should be "" (to disable QoS) or one of the types returned by | |
1145 | * netdev_get_qos_types() for 'netdev'. The contents of 'details' should be | |
1146 | * documented as valid for the given 'type' in the "other_config" column in the | |
1147 | * "QoS" table in vswitchd/vswitch.xml (which is built as | |
1148 | * ovs-vswitchd.conf.db(8)). | |
1149 | * | |
1150 | * NULL may be specified for 'details' if there are no configuration | |
1151 | * details. */ | |
1152 | int | |
1153 | netdev_set_qos(struct netdev *netdev, | |
79f1cbe9 | 1154 | const char *type, const struct smap *details) |
c1c9c9c4 | 1155 | { |
b5d57fc8 | 1156 | const struct netdev_class *class = netdev->netdev_class; |
c1c9c9c4 BP |
1157 | |
1158 | if (!type) { | |
1159 | type = ""; | |
1160 | } | |
1161 | ||
1162 | if (class->set_qos) { | |
1163 | if (!details) { | |
edfbe9f7 | 1164 | static const struct smap empty = SMAP_INITIALIZER(&empty); |
c1c9c9c4 BP |
1165 | details = ∅ |
1166 | } | |
1167 | return class->set_qos(netdev, type, details); | |
1168 | } else { | |
1169 | return *type ? EOPNOTSUPP : 0; | |
1170 | } | |
1171 | } | |
1172 | ||
1173 | /* Queries 'netdev' for information about the queue numbered 'queue_id'. If | |
1174 | * successful, adds that information as string key-value pairs to 'details'. | |
1175 | * Returns 0 if successful, otherwise a positive errno value. | |
1176 | * | |
1177 | * 'queue_id' must be less than the number of queues supported by 'netdev' for | |
1178 | * the current form of QoS (e.g. as returned by netdev_get_n_queues(netdev)). | |
1179 | * | |
1180 | * The returned contents of 'details' should be documented as valid for the | |
1181 | * given 'type' in the "other_config" column in the "Queue" table in | |
1182 | * vswitchd/vswitch.xml (which is built as ovs-vswitchd.conf.db(8)). | |
1183 | * | |
79f1cbe9 EJ |
1184 | * The caller must initialize 'details' (e.g. with smap_init()) before calling |
1185 | * this function. The caller must free 'details' when it is no longer needed | |
1186 | * (e.g. with smap_destroy()). */ | |
c1c9c9c4 BP |
1187 | int |
1188 | netdev_get_queue(const struct netdev *netdev, | |
79f1cbe9 | 1189 | unsigned int queue_id, struct smap *details) |
c1c9c9c4 | 1190 | { |
b5d57fc8 | 1191 | const struct netdev_class *class = netdev->netdev_class; |
c1c9c9c4 BP |
1192 | int retval; |
1193 | ||
1194 | retval = (class->get_queue | |
1195 | ? class->get_queue(netdev, queue_id, details) | |
1196 | : EOPNOTSUPP); | |
1197 | if (retval) { | |
79f1cbe9 | 1198 | smap_clear(details); |
c1c9c9c4 BP |
1199 | } |
1200 | return retval; | |
1201 | } | |
1202 | ||
1203 | /* Configures the queue numbered 'queue_id' on 'netdev' with the key-value | |
1204 | * string pairs in 'details'. The contents of 'details' should be documented | |
1205 | * as valid for the given 'type' in the "other_config" column in the "Queue" | |
1206 | * table in vswitchd/vswitch.xml (which is built as ovs-vswitchd.conf.db(8)). | |
1207 | * Returns 0 if successful, otherwise a positive errno value. On failure, the | |
1208 | * given queue's configuration should be unmodified. | |
1209 | * | |
1210 | * 'queue_id' must be less than the number of queues supported by 'netdev' for | |
1211 | * the current form of QoS (e.g. as returned by netdev_get_n_queues(netdev)). | |
1212 | * | |
1213 | * This function does not modify 'details', and the caller retains ownership of | |
c1fdab01 | 1214 | * it. */ |
c1c9c9c4 BP |
1215 | int |
1216 | netdev_set_queue(struct netdev *netdev, | |
79f1cbe9 | 1217 | unsigned int queue_id, const struct smap *details) |
c1c9c9c4 | 1218 | { |
b5d57fc8 | 1219 | const struct netdev_class *class = netdev->netdev_class; |
c1c9c9c4 BP |
1220 | return (class->set_queue |
1221 | ? class->set_queue(netdev, queue_id, details) | |
1222 | : EOPNOTSUPP); | |
1223 | } | |
1224 | ||
1225 | /* Attempts to delete the queue numbered 'queue_id' from 'netdev'. Some kinds | |
1226 | * of QoS may have a fixed set of queues, in which case attempts to delete them | |
1227 | * will fail with EOPNOTSUPP. | |
1228 | * | |
1229 | * Returns 0 if successful, otherwise a positive errno value. On failure, the | |
1230 | * given queue will be unmodified. | |
1231 | * | |
1232 | * 'queue_id' must be less than the number of queues supported by 'netdev' for | |
1233 | * the current form of QoS (e.g. as returned by | |
1234 | * netdev_get_n_queues(netdev)). */ | |
1235 | int | |
1236 | netdev_delete_queue(struct netdev *netdev, unsigned int queue_id) | |
1237 | { | |
b5d57fc8 | 1238 | const struct netdev_class *class = netdev->netdev_class; |
c1c9c9c4 BP |
1239 | return (class->delete_queue |
1240 | ? class->delete_queue(netdev, queue_id) | |
1241 | : EOPNOTSUPP); | |
1242 | } | |
1243 | ||
1244 | /* Obtains statistics about 'queue_id' on 'netdev'. On success, returns 0 and | |
1245 | * fills 'stats' with the queue's statistics; individual members of 'stats' may | |
1246 | * be set to all-1-bits if the statistic is unavailable. On failure, returns a | |
6dc34a0d BP |
1247 | * positive errno value and fills 'stats' with values indicating unsupported |
1248 | * statistics. */ | |
c1c9c9c4 BP |
1249 | int |
1250 | netdev_get_queue_stats(const struct netdev *netdev, unsigned int queue_id, | |
1251 | struct netdev_queue_stats *stats) | |
1252 | { | |
b5d57fc8 | 1253 | const struct netdev_class *class = netdev->netdev_class; |
c1c9c9c4 BP |
1254 | int retval; |
1255 | ||
1256 | retval = (class->get_queue_stats | |
1257 | ? class->get_queue_stats(netdev, queue_id, stats) | |
1258 | : EOPNOTSUPP); | |
1259 | if (retval) { | |
6dc34a0d BP |
1260 | stats->tx_bytes = UINT64_MAX; |
1261 | stats->tx_packets = UINT64_MAX; | |
1262 | stats->tx_errors = UINT64_MAX; | |
1263 | stats->created = LLONG_MIN; | |
c1c9c9c4 BP |
1264 | } |
1265 | return retval; | |
1266 | } | |
1267 | ||
1268 | /* Iterates over all of 'netdev''s queues, calling 'cb' with the queue's ID, | |
1269 | * its configuration, and the 'aux' specified by the caller. The order of | |
1270 | * iteration is unspecified, but (when successful) each queue is visited | |
1271 | * exactly once. | |
1272 | * | |
1273 | * Calling this function may be more efficient than calling netdev_get_queue() | |
1274 | * for every queue. | |
1275 | * | |
f486e840 BP |
1276 | * 'cb' must not modify or free the 'details' argument passed in. It may |
1277 | * delete or modify the queue passed in as its 'queue_id' argument. It may | |
1278 | * modify but must not delete any other queue within 'netdev'. 'cb' should not | |
1279 | * add new queues because this may cause some queues to be visited twice or not | |
1280 | * at all. | |
c1c9c9c4 BP |
1281 | * |
1282 | * Returns 0 if successful, otherwise a positive errno value. On error, some | |
1283 | * configured queues may not have been included in the iteration. */ | |
1284 | int | |
1285 | netdev_dump_queues(const struct netdev *netdev, | |
1286 | netdev_dump_queues_cb *cb, void *aux) | |
1287 | { | |
b5d57fc8 | 1288 | const struct netdev_class *class = netdev->netdev_class; |
c1c9c9c4 BP |
1289 | return (class->dump_queues |
1290 | ? class->dump_queues(netdev, cb, aux) | |
1291 | : EOPNOTSUPP); | |
1292 | } | |
1293 | ||
1294 | /* Iterates over all of 'netdev''s queues, calling 'cb' with the queue's ID, | |
1295 | * its statistics, and the 'aux' specified by the caller. The order of | |
1296 | * iteration is unspecified, but (when successful) each queue is visited | |
1297 | * exactly once. | |
1298 | * | |
1299 | * Calling this function may be more efficient than calling | |
1300 | * netdev_get_queue_stats() for every queue. | |
1301 | * | |
1302 | * 'cb' must not modify or free the statistics passed in. | |
1303 | * | |
1304 | * Returns 0 if successful, otherwise a positive errno value. On error, some | |
1305 | * configured queues may not have been included in the iteration. */ | |
1306 | int | |
1307 | netdev_dump_queue_stats(const struct netdev *netdev, | |
1308 | netdev_dump_queue_stats_cb *cb, void *aux) | |
1309 | { | |
b5d57fc8 | 1310 | const struct netdev_class *class = netdev->netdev_class; |
c1c9c9c4 BP |
1311 | return (class->dump_queue_stats |
1312 | ? class->dump_queue_stats(netdev, cb, aux) | |
1313 | : EOPNOTSUPP); | |
1314 | } | |
1315 | ||
ac4d3bcb EJ |
1316 | /* Returns a sequence number which indicates changes in one of 'netdev''s |
1317 | * properties. The returned sequence will be nonzero so that callers have a | |
1318 | * value which they may use as a reset when tracking 'netdev'. | |
1319 | * | |
1320 | * The returned sequence number will change whenever 'netdev''s flags, | |
1321 | * features, ethernet address, or carrier changes. It may change for other | |
1322 | * reasons as well, or no reason at all. */ | |
1323 | unsigned int | |
1324 | netdev_change_seq(const struct netdev *netdev) | |
1325 | { | |
b5d57fc8 | 1326 | return netdev->netdev_class->change_seq(netdev); |
ac4d3bcb | 1327 | } |
8b61709d | 1328 | \f |
b5d57fc8 | 1329 | /* Initializes 'netdev' as a netdev device named 'name' of the specified |
6d9e6eb4 BP |
1330 | * 'netdev_class'. This function is ordinarily called from a netdev provider's |
1331 | * 'create' function. | |
1332 | * | |
b5d57fc8 BP |
1333 | * This function adds 'netdev' to a netdev-owned shash, so it is very important |
1334 | * that 'netdev' only be freed after calling netdev_uninit(). */ | |
149f577a | 1335 | void |
b5d57fc8 BP |
1336 | netdev_init(struct netdev *netdev, const char *name, |
1337 | const struct netdev_class *netdev_class) | |
149f577a | 1338 | { |
b5d57fc8 | 1339 | ovs_assert(!shash_find(&netdev_shash, name)); |
149f577a | 1340 | |
b5d57fc8 BP |
1341 | memset(netdev, 0, sizeof *netdev); |
1342 | netdev->netdev_class = netdev_class; | |
1343 | netdev->name = xstrdup(name); | |
1344 | netdev->node = shash_add(&netdev_shash, name, netdev); | |
1345 | list_init(&netdev->saved_flags_list); | |
149f577a JG |
1346 | } |
1347 | ||
1348 | /* Undoes the results of initialization. | |
1349 | * | |
1350 | * Normally this function does not need to be called as netdev_close has | |
1351 | * the same effect when the refcount drops to zero. | |
1352 | * However, it may be called by providers due to an error on creation | |
1353 | * that occurs after initialization. It this case netdev_close() would | |
1354 | * never be called. */ | |
6c88d577 | 1355 | void |
b5d57fc8 | 1356 | netdev_uninit(struct netdev *netdev, bool destroy) |
6c88d577 | 1357 | { |
b5d57fc8 | 1358 | char *name = netdev->name; |
149f577a | 1359 | |
b5d57fc8 BP |
1360 | ovs_assert(!netdev->ref_cnt); |
1361 | ovs_assert(list_is_empty(&netdev->saved_flags_list)); | |
149f577a | 1362 | |
b5d57fc8 | 1363 | shash_delete(&netdev_shash, netdev->node); |
6c88d577 | 1364 | |
149f577a | 1365 | if (destroy) { |
b5d57fc8 | 1366 | netdev->netdev_class->destroy(netdev); |
149f577a JG |
1367 | } |
1368 | free(name); | |
6c88d577 JP |
1369 | } |
1370 | ||
b5d57fc8 | 1371 | /* Returns the class type of 'netdev'. |
a740f0de JG |
1372 | * |
1373 | * The caller must not free the returned value. */ | |
149f577a | 1374 | const char * |
b5d57fc8 | 1375 | netdev_get_type(const struct netdev *netdev) |
a740f0de | 1376 | { |
b5d57fc8 | 1377 | return netdev->netdev_class->type; |
a740f0de JG |
1378 | } |
1379 | ||
b5d57fc8 | 1380 | /* Returns the class associated with 'netdev'. */ |
15b3596a | 1381 | const struct netdev_class * |
b5d57fc8 | 1382 | netdev_get_class(const struct netdev *netdev) |
a740f0de | 1383 | { |
b5d57fc8 | 1384 | return netdev->netdev_class; |
a740f0de JG |
1385 | } |
1386 | ||
b5d57fc8 | 1387 | /* Returns the netdev with 'name' or NULL if there is none. |
46415c90 | 1388 | * |
991e5fae | 1389 | * The caller must free the returned netdev with netdev_close(). */ |
b5d57fc8 BP |
1390 | struct netdev * |
1391 | netdev_from_name(const char *name) | |
46415c90 | 1392 | { |
991e5fae BP |
1393 | struct netdev *netdev; |
1394 | ||
1395 | netdev = shash_find_data(&netdev_shash, name); | |
1396 | if (netdev) { | |
1397 | netdev_ref(netdev); | |
1398 | } | |
1399 | ||
1400 | return netdev; | |
46415c90 JG |
1401 | } |
1402 | ||
7dab847a | 1403 | /* Fills 'device_list' with devices that match 'netdev_class'. |
46415c90 | 1404 | * |
2f980d74 BP |
1405 | * The caller is responsible for initializing and destroying 'device_list' and |
1406 | * must close each device on the list. */ | |
46415c90 | 1407 | void |
b5d57fc8 BP |
1408 | netdev_get_devices(const struct netdev_class *netdev_class, |
1409 | struct shash *device_list) | |
46415c90 JG |
1410 | { |
1411 | struct shash_node *node; | |
b5d57fc8 BP |
1412 | SHASH_FOR_EACH (node, &netdev_shash) { |
1413 | struct netdev *dev = node->data; | |
46415c90 | 1414 | |
7dab847a | 1415 | if (dev->netdev_class == netdev_class) { |
2f980d74 | 1416 | dev->ref_cnt++; |
46415c90 JG |
1417 | shash_add(device_list, node->name, node->data); |
1418 | } | |
1419 | } | |
1420 | } | |
1421 | ||
0a740f48 EJ |
1422 | const char * |
1423 | netdev_get_type_from_name(const char *name) | |
1424 | { | |
991e5fae BP |
1425 | struct netdev *dev = netdev_from_name(name); |
1426 | const char *type = dev ? netdev_get_type(dev) : NULL; | |
1427 | netdev_close(dev); | |
1428 | return type; | |
6c88d577 | 1429 | } |
e9e28be3 | 1430 | \f |
796223f5 | 1431 | void |
b5d57fc8 | 1432 | netdev_rx_init(struct netdev_rx *rx, struct netdev *netdev, |
796223f5 BP |
1433 | const struct netdev_rx_class *class) |
1434 | { | |
b5d57fc8 | 1435 | ovs_assert(netdev->ref_cnt > 0); |
796223f5 | 1436 | rx->rx_class = class; |
b5d57fc8 | 1437 | rx->netdev = netdev; |
796223f5 BP |
1438 | } |
1439 | ||
1440 | void | |
1441 | netdev_rx_uninit(struct netdev_rx *rx OVS_UNUSED) | |
1442 | { | |
1443 | /* Nothing to do. */ | |
1444 | } | |
1445 | ||
b5d57fc8 BP |
1446 | struct netdev * |
1447 | netdev_rx_get_netdev(const struct netdev_rx *rx) | |
796223f5 | 1448 | { |
b5d57fc8 BP |
1449 | ovs_assert(rx->netdev->ref_cnt > 0); |
1450 | return rx->netdev; | |
796223f5 BP |
1451 | } |
1452 | ||
1453 | const char * | |
1454 | netdev_rx_get_name(const struct netdev_rx *rx) | |
1455 | { | |
b5d57fc8 | 1456 | return netdev_get_name(netdev_rx_get_netdev(rx)); |
796223f5 BP |
1457 | } |
1458 | ||
064af421 | 1459 | static void |
4b609110 | 1460 | restore_all_flags(void *aux OVS_UNUSED) |
064af421 | 1461 | { |
4b609110 BP |
1462 | struct shash_node *node; |
1463 | ||
b5d57fc8 BP |
1464 | SHASH_FOR_EACH (node, &netdev_shash) { |
1465 | struct netdev *netdev = node->data; | |
4b609110 BP |
1466 | const struct netdev_saved_flags *sf; |
1467 | enum netdev_flags saved_values; | |
1468 | enum netdev_flags saved_flags; | |
1469 | ||
1470 | saved_values = saved_flags = 0; | |
b5d57fc8 | 1471 | LIST_FOR_EACH (sf, node, &netdev->saved_flags_list) { |
4b609110 BP |
1472 | saved_flags |= sf->saved_flags; |
1473 | saved_values &= ~sf->saved_flags; | |
1474 | saved_values |= sf->saved_flags & sf->saved_values; | |
1475 | } | |
1476 | if (saved_flags) { | |
1477 | enum netdev_flags old_flags; | |
1478 | ||
b5d57fc8 BP |
1479 | netdev->netdev_class->update_flags(netdev, |
1480 | saved_flags & saved_values, | |
1481 | saved_flags & ~saved_values, | |
1482 | &old_flags); | |
4b609110 | 1483 | } |
064af421 BP |
1484 | } |
1485 | } |