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064af421 | 1 | /* |
909153f1 | 2 | * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2016, 2017 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 | ||
06922579 | 34 | #include "cmap.h" |
064af421 | 35 | #include "coverage.h" |
94a53842 | 36 | #include "dpif.h" |
cf62fa4c | 37 | #include "dp-packet.h" |
3e8a2ad1 | 38 | #include "openvswitch/dynamic-string.h" |
064af421 | 39 | #include "fatal-signal.h" |
149f577a | 40 | #include "hash.h" |
b19bab5b | 41 | #include "openvswitch/list.h" |
8a9562d2 | 42 | #include "netdev-dpdk.h" |
8b61709d | 43 | #include "netdev-provider.h" |
2b9d6589 | 44 | #include "netdev-vport.h" |
d625fbd1 | 45 | #include "odp-netlink.h" |
622ee2cf | 46 | #include "openflow/openflow.h" |
064af421 | 47 | #include "packets.h" |
fd016ae3 | 48 | #include "openvswitch/poll-loop.h" |
a36de779 | 49 | #include "seq.h" |
ee89ea7b | 50 | #include "openvswitch/shash.h" |
79f1cbe9 | 51 | #include "smap.h" |
b3c01ed3 | 52 | #include "sset.h" |
064af421 | 53 | #include "svec.h" |
e6211adc | 54 | #include "openvswitch/vlog.h" |
c876a4bb | 55 | #include "flow.h" |
a8704b50 | 56 | #include "util.h" |
691d20cb PB |
57 | #ifdef __linux__ |
58 | #include "tc.h" | |
59 | #endif | |
064af421 | 60 | |
d98e6007 | 61 | VLOG_DEFINE_THIS_MODULE(netdev); |
5136ce49 | 62 | |
d76f09ea BP |
63 | COVERAGE_DEFINE(netdev_received); |
64 | COVERAGE_DEFINE(netdev_sent); | |
65 | COVERAGE_DEFINE(netdev_add_router); | |
66 | COVERAGE_DEFINE(netdev_get_stats); | |
67 | ||
4b609110 | 68 | struct netdev_saved_flags { |
b5d57fc8 | 69 | struct netdev *netdev; |
ca6ba700 | 70 | struct ovs_list node; /* In struct netdev's saved_flags_list. */ |
4b609110 BP |
71 | enum netdev_flags saved_flags; |
72 | enum netdev_flags saved_values; | |
73 | }; | |
74 | ||
86383816 BP |
75 | /* Protects 'netdev_shash' and the mutable members of struct netdev. */ |
76 | static struct ovs_mutex netdev_mutex = OVS_MUTEX_INITIALIZER; | |
064af421 | 77 | |
6c88d577 | 78 | /* All created network devices. */ |
86383816 BP |
79 | static struct shash netdev_shash OVS_GUARDED_BY(netdev_mutex) |
80 | = SHASH_INITIALIZER(&netdev_shash); | |
81 | ||
06922579 BP |
82 | /* Mutual exclusion of */ |
83 | static struct ovs_mutex netdev_class_mutex OVS_ACQ_BEFORE(netdev_mutex) | |
84 | = OVS_MUTEX_INITIALIZER; | |
86383816 BP |
85 | |
86 | /* Contains 'struct netdev_registered_class'es. */ | |
06922579 | 87 | static struct cmap netdev_classes = CMAP_INITIALIZER; |
86383816 BP |
88 | |
89 | struct netdev_registered_class { | |
06922579 BP |
90 | struct cmap_node cmap_node; /* In 'netdev_classes', by class->type. */ |
91 | const struct netdev_class *class; | |
92 | ||
93 | /* Number of references: one for the class itself and one for every | |
94 | * instance of the class. */ | |
95 | struct ovs_refcount refcnt; | |
86383816 | 96 | }; |
064af421 | 97 | |
53611f7b PB |
98 | static bool netdev_flow_api_enabled = false; |
99 | ||
064af421 BP |
100 | /* This is set pretty low because we probably won't learn anything from the |
101 | * additional log messages. */ | |
102 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20); | |
103 | ||
4b609110 | 104 | static void restore_all_flags(void *aux OVS_UNUSED); |
b5d57fc8 | 105 | void update_device_args(struct netdev *, const struct shash *args); |
8b61709d | 106 | |
f00fa8cb AW |
107 | int |
108 | netdev_n_txq(const struct netdev *netdev) | |
109 | { | |
110 | return netdev->n_txq; | |
111 | } | |
112 | ||
55c955bd PS |
113 | int |
114 | netdev_n_rxq(const struct netdev *netdev) | |
115 | { | |
116 | return netdev->n_rxq; | |
117 | } | |
118 | ||
e4cfed38 PS |
119 | bool |
120 | netdev_is_pmd(const struct netdev *netdev) | |
121 | { | |
118c77b1 | 122 | return netdev->netdev_class->is_pmd; |
e4cfed38 PS |
123 | } |
124 | ||
57eebbb4 DDP |
125 | bool |
126 | netdev_has_tunnel_push_pop(const struct netdev *netdev) | |
127 | { | |
128 | return netdev->netdev_class->push_header | |
129 | && netdev->netdev_class->pop_header; | |
130 | } | |
131 | ||
a4fdb0f3 GS |
132 | static void |
133 | netdev_initialize(void) | |
06922579 | 134 | OVS_EXCLUDED(netdev_mutex) |
a4fdb0f3 GS |
135 | { |
136 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
137 | ||
138 | if (ovsthread_once_start(&once)) { | |
4b609110 | 139 | fatal_signal_add_hook(restore_all_flags, NULL, NULL, true); |
06922579 | 140 | |
c060c4cf | 141 | netdev_vport_patch_register(); |
064af421 | 142 | |
2f51a7eb | 143 | #ifdef __linux__ |
2b9d6589 | 144 | netdev_register_provider(&netdev_linux_class); |
c3827f61 | 145 | netdev_register_provider(&netdev_internal_class); |
2b9d6589 | 146 | netdev_register_provider(&netdev_tap_class); |
c060c4cf | 147 | netdev_vport_tunnel_register(); |
f6eb6b20 | 148 | #endif |
666afb55 | 149 | #if defined(__FreeBSD__) || defined(__NetBSD__) |
f6eb6b20 GL |
150 | netdev_register_provider(&netdev_tap_class); |
151 | netdev_register_provider(&netdev_bsd_class); | |
078eedf4 NR |
152 | #endif |
153 | #ifdef _WIN32 | |
154 | netdev_register_provider(&netdev_windows_class); | |
155 | netdev_register_provider(&netdev_internal_class); | |
156 | netdev_vport_tunnel_register(); | |
2b9d6589 | 157 | #endif |
86383816 | 158 | ovsthread_once_done(&once); |
064af421 | 159 | } |
064af421 BP |
160 | } |
161 | ||
8b61709d BP |
162 | /* Performs periodic work needed by all the various kinds of netdevs. |
163 | * | |
164 | * If your program opens any netdevs, it must call this function within its | |
165 | * main poll loop. */ | |
166 | void | |
167 | netdev_run(void) | |
06922579 | 168 | OVS_EXCLUDED(netdev_mutex) |
064af421 | 169 | { |
aaea735b | 170 | netdev_initialize(); |
06922579 BP |
171 | |
172 | struct netdev_registered_class *rc; | |
173 | CMAP_FOR_EACH (rc, cmap_node, &netdev_classes) { | |
3fd6ef29 | 174 | if (rc->class->run) { |
1c33f0c3 | 175 | rc->class->run(rc->class); |
3fd6ef29 | 176 | } |
064af421 BP |
177 | } |
178 | } | |
179 | ||
8b61709d BP |
180 | /* Arranges for poll_block() to wake up when netdev_run() needs to be called. |
181 | * | |
182 | * If your program opens any netdevs, it must call this function within its | |
183 | * main poll loop. */ | |
184 | void | |
185 | netdev_wait(void) | |
06922579 | 186 | OVS_EXCLUDED(netdev_mutex) |
064af421 | 187 | { |
06922579 | 188 | netdev_initialize(); |
86383816 | 189 | |
06922579 BP |
190 | struct netdev_registered_class *rc; |
191 | CMAP_FOR_EACH (rc, cmap_node, &netdev_classes) { | |
3fd6ef29 | 192 | if (rc->class->wait) { |
1c33f0c3 | 193 | rc->class->wait(rc->class); |
3fd6ef29 | 194 | } |
86383816 | 195 | } |
86383816 BP |
196 | } |
197 | ||
198 | static struct netdev_registered_class * | |
199 | netdev_lookup_class(const char *type) | |
86383816 BP |
200 | { |
201 | struct netdev_registered_class *rc; | |
06922579 | 202 | CMAP_FOR_EACH_WITH_HASH (rc, cmap_node, hash_string(type, 0), |
86383816 BP |
203 | &netdev_classes) { |
204 | if (!strcmp(type, rc->class->type)) { | |
205 | return rc; | |
8b61709d | 206 | } |
064af421 | 207 | } |
86383816 | 208 | return NULL; |
064af421 BP |
209 | } |
210 | ||
77909859 JG |
211 | /* Initializes and registers a new netdev provider. After successful |
212 | * registration, new netdevs of that type can be opened using netdev_open(). */ | |
213 | int | |
214 | netdev_register_provider(const struct netdev_class *new_class) | |
da695497 | 215 | OVS_EXCLUDED(netdev_class_mutex, netdev_mutex) |
77909859 | 216 | { |
86383816 BP |
217 | int error; |
218 | ||
da695497 | 219 | ovs_mutex_lock(&netdev_class_mutex); |
86383816 | 220 | if (netdev_lookup_class(new_class->type)) { |
77909859 JG |
221 | VLOG_WARN("attempted to register duplicate netdev provider: %s", |
222 | new_class->type); | |
86383816 BP |
223 | error = EEXIST; |
224 | } else { | |
225 | error = new_class->init ? new_class->init() : 0; | |
226 | if (!error) { | |
227 | struct netdev_registered_class *rc; | |
228 | ||
229 | rc = xmalloc(sizeof *rc); | |
06922579 | 230 | cmap_insert(&netdev_classes, &rc->cmap_node, |
86383816 BP |
231 | hash_string(new_class->type, 0)); |
232 | rc->class = new_class; | |
06922579 | 233 | ovs_refcount_init(&rc->refcnt); |
86383816 | 234 | } else { |
77909859 | 235 | VLOG_ERR("failed to initialize %s network device class: %s", |
10a89ef0 | 236 | new_class->type, ovs_strerror(error)); |
77909859 JG |
237 | } |
238 | } | |
da695497 | 239 | ovs_mutex_unlock(&netdev_class_mutex); |
77909859 | 240 | |
86383816 | 241 | return error; |
77909859 JG |
242 | } |
243 | ||
06922579 BP |
244 | /* Unregisters a netdev provider. 'type' must have been previously registered |
245 | * and not currently be in use by any netdevs. After unregistration new | |
246 | * netdevs of that type cannot be opened using netdev_open(). (However, the | |
247 | * provider may still be accessible from other threads until the next RCU grace | |
248 | * period, so the caller must not free or re-register the same netdev_class | |
249 | * until that has passed.) */ | |
77909859 JG |
250 | int |
251 | netdev_unregister_provider(const char *type) | |
da695497 | 252 | OVS_EXCLUDED(netdev_class_mutex, netdev_mutex) |
77909859 | 253 | { |
86383816 BP |
254 | struct netdev_registered_class *rc; |
255 | int error; | |
77909859 | 256 | |
7a82d305 BP |
257 | netdev_initialize(); |
258 | ||
da695497 | 259 | ovs_mutex_lock(&netdev_class_mutex); |
86383816 BP |
260 | rc = netdev_lookup_class(type); |
261 | if (!rc) { | |
77909859 JG |
262 | VLOG_WARN("attempted to unregister a netdev provider that is not " |
263 | "registered: %s", type); | |
86383816 | 264 | error = EAFNOSUPPORT; |
06922579 BP |
265 | } else if (ovs_refcount_unref(&rc->refcnt) != 1) { |
266 | ovs_refcount_ref(&rc->refcnt); | |
267 | VLOG_WARN("attempted to unregister in use netdev provider: %s", | |
268 | type); | |
269 | error = EBUSY; | |
270 | } else { | |
271 | cmap_remove(&netdev_classes, &rc->cmap_node, | |
272 | hash_string(rc->class->type, 0)); | |
273 | ovsrcu_postpone(free, rc); | |
274 | error = 0; | |
77909859 | 275 | } |
da695497 | 276 | ovs_mutex_unlock(&netdev_class_mutex); |
77909859 | 277 | |
86383816 | 278 | return error; |
c3827f61 BP |
279 | } |
280 | ||
77909859 | 281 | /* Clears 'types' and enumerates the types of all currently registered netdev |
19993ef3 | 282 | * providers into it. The caller must first initialize the sset. */ |
77909859 | 283 | void |
19993ef3 | 284 | netdev_enumerate_types(struct sset *types) |
86383816 | 285 | OVS_EXCLUDED(netdev_mutex) |
77909859 | 286 | { |
77909859 | 287 | netdev_initialize(); |
19993ef3 | 288 | sset_clear(types); |
77909859 | 289 | |
06922579 BP |
290 | struct netdev_registered_class *rc; |
291 | CMAP_FOR_EACH (rc, cmap_node, &netdev_classes) { | |
86383816 | 292 | sset_add(types, rc->class->type); |
77909859 JG |
293 | } |
294 | } | |
295 | ||
33d80cf9 TLSC |
296 | static const char * |
297 | netdev_vport_type_from_name(const char *name) | |
298 | { | |
299 | struct netdev_registered_class *rc; | |
300 | const char *type; | |
301 | CMAP_FOR_EACH (rc, cmap_node, &netdev_classes) { | |
302 | const char *dpif_port = netdev_vport_class_get_dpif_port(rc->class); | |
303 | if (dpif_port && !strncmp(name, dpif_port, strlen(dpif_port))) { | |
304 | type = rc->class->type; | |
305 | return type; | |
306 | } | |
307 | } | |
308 | return NULL; | |
309 | } | |
310 | ||
94a53842 AW |
311 | /* Check that the network device name is not the same as any of the registered |
312 | * vport providers' dpif_port name (dpif_port is NULL if the vport provider | |
313 | * does not define it) or the datapath internal port name (e.g. ovs-system). | |
314 | * | |
315 | * Returns true if there is a name conflict, false otherwise. */ | |
316 | bool | |
317 | netdev_is_reserved_name(const char *name) | |
86383816 | 318 | OVS_EXCLUDED(netdev_mutex) |
94a53842 | 319 | { |
94a53842 | 320 | netdev_initialize(); |
86383816 | 321 | |
06922579 BP |
322 | struct netdev_registered_class *rc; |
323 | CMAP_FOR_EACH (rc, cmap_node, &netdev_classes) { | |
86383816 | 324 | const char *dpif_port = netdev_vport_class_get_dpif_port(rc->class); |
a5d4fadd | 325 | if (dpif_port && !strncmp(name, dpif_port, strlen(dpif_port))) { |
94a53842 AW |
326 | return true; |
327 | } | |
328 | } | |
329 | ||
330 | if (!strncmp(name, "ovs-", 4)) { | |
331 | struct sset types; | |
332 | const char *type; | |
333 | ||
334 | sset_init(&types); | |
335 | dp_enumerate_types(&types); | |
336 | SSET_FOR_EACH (type, &types) { | |
337 | if (!strcmp(name+4, type)) { | |
338 | sset_destroy(&types); | |
339 | return true; | |
340 | } | |
341 | } | |
342 | sset_destroy(&types); | |
343 | } | |
344 | ||
345 | return false; | |
346 | } | |
347 | ||
18812dff BP |
348 | /* Opens the network device named 'name' (e.g. "eth0") of the specified 'type' |
349 | * (e.g. "system") and returns zero if successful, otherwise a positive errno | |
350 | * value. On success, sets '*netdevp' to the new network device, otherwise to | |
351 | * null. | |
064af421 | 352 | * |
de5cdb90 | 353 | * Some network devices may need to be configured (with netdev_set_config()) |
7f381c2e DDP |
354 | * before they can be used. |
355 | * | |
356 | * Before opening rxqs or sending packets, '*netdevp' may need to be | |
357 | * reconfigured (with netdev_is_reconf_required() and netdev_reconfigure()). | |
358 | * */ | |
064af421 | 359 | int |
18812dff | 360 | netdev_open(const char *name, const char *type, struct netdev **netdevp) |
86383816 | 361 | OVS_EXCLUDED(netdev_mutex) |
064af421 | 362 | { |
b5d57fc8 | 363 | struct netdev *netdev; |
8c2c225e | 364 | int error = 0; |
064af421 | 365 | |
909153f1 BP |
366 | if (!name[0]) { |
367 | /* Reject empty names. This saves the providers having to do this. At | |
368 | * least one screwed this up: the netdev-linux "tap" implementation | |
369 | * passed the name directly to the Linux TUNSETIFF call, which treats | |
370 | * an empty string as a request to generate a unique name. */ | |
371 | return EINVAL; | |
372 | } | |
373 | ||
559843ed | 374 | netdev_initialize(); |
6c88d577 | 375 | |
86383816 | 376 | ovs_mutex_lock(&netdev_mutex); |
b5d57fc8 | 377 | netdev = shash_find_data(&netdev_shash, name); |
8c2c225e EC |
378 | |
379 | if (netdev && | |
380 | type && type[0] && strcmp(type, netdev->netdev_class->type)) { | |
381 | ||
382 | if (netdev->auto_classified) { | |
383 | /* If this device was first created without a classification type, | |
384 | * for example due to routing or tunneling code, and they keep a | |
385 | * reference, a "classified" call to open will fail. In this case | |
386 | * we remove the classless device, and re-add it below. We remove | |
387 | * the netdev from the shash, and change the sequence, so owners of | |
388 | * the old classless device can release/cleanup. */ | |
389 | if (netdev->node) { | |
390 | shash_delete(&netdev_shash, netdev->node); | |
391 | netdev->node = NULL; | |
392 | netdev_change_seq_changed(netdev); | |
393 | } | |
394 | ||
395 | netdev = NULL; | |
396 | } else { | |
397 | error = EEXIST; | |
398 | } | |
399 | } | |
400 | ||
b5d57fc8 | 401 | if (!netdev) { |
86383816 | 402 | struct netdev_registered_class *rc; |
c3827f61 | 403 | |
74d46929 | 404 | rc = netdev_lookup_class(type && type[0] ? type : "system"); |
06922579 | 405 | if (rc && ovs_refcount_try_ref_rcu(&rc->refcnt)) { |
86383816 | 406 | netdev = rc->class->alloc(); |
9dc63482 BP |
407 | if (netdev) { |
408 | memset(netdev, 0, sizeof *netdev); | |
86383816 | 409 | netdev->netdev_class = rc->class; |
8c2c225e | 410 | netdev->auto_classified = type && type[0] ? false : true; |
9dc63482 | 411 | netdev->name = xstrdup(name); |
3e912ffc | 412 | netdev->change_seq = 1; |
790fb3b7 DDP |
413 | netdev->reconfigure_seq = seq_create(); |
414 | netdev->last_reconfigure_seq = | |
415 | seq_read(netdev->reconfigure_seq); | |
9dc63482 | 416 | netdev->node = shash_add(&netdev_shash, name, netdev); |
55c955bd | 417 | |
f00fa8cb AW |
418 | /* By default enable one tx and rx queue per netdev. */ |
419 | netdev->n_txq = netdev->netdev_class->send ? 1 : 0; | |
420 | netdev->n_rxq = netdev->netdev_class->rxq_alloc ? 1 : 0; | |
421 | ||
417e7e66 | 422 | ovs_list_init(&netdev->saved_flags_list); |
9dc63482 | 423 | |
86383816 BP |
424 | error = rc->class->construct(netdev); |
425 | if (!error) { | |
3e912ffc | 426 | netdev_change_seq_changed(netdev); |
86383816 | 427 | } else { |
06922579 | 428 | ovs_refcount_unref(&rc->refcnt); |
1388f0b7 | 429 | seq_destroy(netdev->reconfigure_seq); |
d72e22c8 | 430 | free(netdev->name); |
417e7e66 | 431 | ovs_assert(ovs_list_is_empty(&netdev->saved_flags_list)); |
d72e22c8 | 432 | shash_delete(&netdev_shash, netdev->node); |
86383816 | 433 | rc->class->dealloc(netdev); |
9dc63482 BP |
434 | } |
435 | } else { | |
436 | error = ENOMEM; | |
437 | } | |
438 | } else { | |
c3827f61 | 439 | VLOG_WARN("could not create netdev %s of unknown type %s", |
18812dff | 440 | name, type); |
9dc63482 | 441 | error = EAFNOSUPPORT; |
149f577a | 442 | } |
6c88d577 | 443 | } |
064af421 | 444 | |
9dc63482 BP |
445 | if (!error) { |
446 | netdev->ref_cnt++; | |
447 | *netdevp = netdev; | |
448 | } else { | |
449 | *netdevp = NULL; | |
450 | } | |
ca94dda6 | 451 | ovs_mutex_unlock(&netdev_mutex); |
ca94dda6 | 452 | |
9dc63482 | 453 | return error; |
064af421 BP |
454 | } |
455 | ||
e20ae811 EJ |
456 | /* Returns a reference to 'netdev_' for the caller to own. Returns null if |
457 | * 'netdev_' is null. */ | |
0bb0393a BP |
458 | struct netdev * |
459 | netdev_ref(const struct netdev *netdev_) | |
86383816 | 460 | OVS_EXCLUDED(netdev_mutex) |
0bb0393a BP |
461 | { |
462 | struct netdev *netdev = CONST_CAST(struct netdev *, netdev_); | |
463 | ||
e20ae811 | 464 | if (netdev) { |
86383816 | 465 | ovs_mutex_lock(&netdev_mutex); |
e20ae811 EJ |
466 | ovs_assert(netdev->ref_cnt > 0); |
467 | netdev->ref_cnt++; | |
86383816 | 468 | ovs_mutex_unlock(&netdev_mutex); |
e20ae811 | 469 | } |
0bb0393a BP |
470 | return netdev; |
471 | } | |
472 | ||
149f577a JG |
473 | /* Reconfigures the device 'netdev' with 'args'. 'args' may be empty |
474 | * or NULL if none are needed. */ | |
475 | int | |
bbe6109d | 476 | netdev_set_config(struct netdev *netdev, const struct smap *args, char **errp) |
86383816 | 477 | OVS_EXCLUDED(netdev_mutex) |
149f577a | 478 | { |
b5d57fc8 | 479 | if (netdev->netdev_class->set_config) { |
86383816 | 480 | const struct smap no_args = SMAP_INITIALIZER(&no_args); |
9fff138e | 481 | char *verbose_error = NULL; |
4f6b9934 BP |
482 | int error; |
483 | ||
484 | error = netdev->netdev_class->set_config(netdev, | |
9fff138e DDP |
485 | args ? args : &no_args, |
486 | &verbose_error); | |
4f6b9934 | 487 | if (error) { |
9fff138e DDP |
488 | VLOG_WARN_BUF(verbose_error ? NULL : errp, |
489 | "%s: could not set configuration (%s)", | |
bbe6109d | 490 | netdev_get_name(netdev), ovs_strerror(error)); |
9fff138e | 491 | if (verbose_error) { |
429be0ee ZB |
492 | if (errp) { |
493 | *errp = verbose_error; | |
494 | } else { | |
495 | free(verbose_error); | |
496 | } | |
9fff138e | 497 | } |
4f6b9934 BP |
498 | } |
499 | return error; | |
79f1cbe9 | 500 | } else if (args && !smap_is_empty(args)) { |
bbe6109d TG |
501 | VLOG_WARN_BUF(errp, "%s: arguments provided to device that is not configurable", |
502 | netdev_get_name(netdev)); | |
149f577a | 503 | } |
149f577a JG |
504 | return 0; |
505 | } | |
506 | ||
de5cdb90 | 507 | /* Returns the current configuration for 'netdev' in 'args'. The caller must |
79f1cbe9 | 508 | * have already initialized 'args' with smap_init(). Returns 0 on success, in |
de5cdb90 BP |
509 | * which case 'args' will be filled with 'netdev''s configuration. On failure |
510 | * returns a positive errno value, in which case 'args' will be empty. | |
6d9e6eb4 | 511 | * |
de5cdb90 | 512 | * The caller owns 'args' and its contents and must eventually free them with |
79f1cbe9 | 513 | * smap_destroy(). */ |
de5cdb90 | 514 | int |
79f1cbe9 | 515 | netdev_get_config(const struct netdev *netdev, struct smap *args) |
86383816 | 516 | OVS_EXCLUDED(netdev_mutex) |
6d9e6eb4 | 517 | { |
de5cdb90 BP |
518 | int error; |
519 | ||
79f1cbe9 | 520 | smap_clear(args); |
b5d57fc8 BP |
521 | if (netdev->netdev_class->get_config) { |
522 | error = netdev->netdev_class->get_config(netdev, args); | |
de5cdb90 | 523 | if (error) { |
79f1cbe9 | 524 | smap_clear(args); |
de5cdb90 BP |
525 | } |
526 | } else { | |
527 | error = 0; | |
528 | } | |
529 | ||
530 | return error; | |
6d9e6eb4 BP |
531 | } |
532 | ||
f431bf7d EJ |
533 | const struct netdev_tunnel_config * |
534 | netdev_get_tunnel_config(const struct netdev *netdev) | |
86383816 | 535 | OVS_EXCLUDED(netdev_mutex) |
f431bf7d | 536 | { |
b5d57fc8 BP |
537 | if (netdev->netdev_class->get_tunnel_config) { |
538 | return netdev->netdev_class->get_tunnel_config(netdev); | |
f431bf7d EJ |
539 | } else { |
540 | return NULL; | |
541 | } | |
542 | } | |
543 | ||
7dec44fe AW |
544 | /* Returns the id of the numa node the 'netdev' is on. If the function |
545 | * is not implemented, returns NETDEV_NUMA_UNSPEC. */ | |
546 | int | |
547 | netdev_get_numa_id(const struct netdev *netdev) | |
548 | { | |
549 | if (netdev->netdev_class->get_numa_id) { | |
550 | return netdev->netdev_class->get_numa_id(netdev); | |
551 | } else { | |
552 | return NETDEV_NUMA_UNSPEC; | |
553 | } | |
554 | } | |
555 | ||
4b609110 | 556 | static void |
b5d57fc8 | 557 | netdev_unref(struct netdev *dev) |
86383816 | 558 | OVS_RELEASES(netdev_mutex) |
4b609110 BP |
559 | { |
560 | ovs_assert(dev->ref_cnt); | |
561 | if (!--dev->ref_cnt) { | |
86383816 BP |
562 | const struct netdev_class *class = dev->netdev_class; |
563 | struct netdev_registered_class *rc; | |
86383816 | 564 | |
9dc63482 BP |
565 | dev->netdev_class->destruct(dev); |
566 | ||
fe83f81d RW |
567 | if (dev->node) { |
568 | shash_delete(&netdev_shash, dev->node); | |
569 | } | |
9dc63482 | 570 | free(dev->name); |
790fb3b7 | 571 | seq_destroy(dev->reconfigure_seq); |
9dc63482 | 572 | dev->netdev_class->dealloc(dev); |
86383816 BP |
573 | ovs_mutex_unlock(&netdev_mutex); |
574 | ||
86383816 | 575 | rc = netdev_lookup_class(class->type); |
06922579 | 576 | ovs_refcount_unref(&rc->refcnt); |
86383816 BP |
577 | } else { |
578 | ovs_mutex_unlock(&netdev_mutex); | |
4b609110 BP |
579 | } |
580 | } | |
581 | ||
064af421 BP |
582 | /* Closes and destroys 'netdev'. */ |
583 | void | |
584 | netdev_close(struct netdev *netdev) | |
86383816 | 585 | OVS_EXCLUDED(netdev_mutex) |
064af421 BP |
586 | { |
587 | if (netdev) { | |
86383816 | 588 | ovs_mutex_lock(&netdev_mutex); |
b5d57fc8 | 589 | netdev_unref(netdev); |
064af421 BP |
590 | } |
591 | } | |
592 | ||
fe83f81d RW |
593 | /* Removes 'netdev' from the global shash and unrefs 'netdev'. |
594 | * | |
595 | * This allows handler and revalidator threads to still retain references | |
596 | * to this netdev while the main thread changes interface configuration. | |
597 | * | |
598 | * This function should only be called by the main thread when closing | |
599 | * netdevs during user configuration changes. Otherwise, netdev_close should be | |
600 | * used to close netdevs. */ | |
601 | void | |
602 | netdev_remove(struct netdev *netdev) | |
603 | { | |
604 | if (netdev) { | |
605 | ovs_mutex_lock(&netdev_mutex); | |
606 | if (netdev->node) { | |
607 | shash_delete(&netdev_shash, netdev->node); | |
608 | netdev->node = NULL; | |
609 | netdev_change_seq_changed(netdev); | |
610 | } | |
611 | netdev_unref(netdev); | |
612 | } | |
613 | } | |
614 | ||
a75531e5 BP |
615 | /* Parses 'netdev_name_', which is of the form [type@]name into its component |
616 | * pieces. 'name' and 'type' must be freed by the caller. */ | |
617 | void | |
618 | netdev_parse_name(const char *netdev_name_, char **name, char **type) | |
619 | { | |
620 | char *netdev_name = xstrdup(netdev_name_); | |
621 | char *separator; | |
622 | ||
623 | separator = strchr(netdev_name, '@'); | |
624 | if (separator) { | |
625 | *separator = '\0'; | |
626 | *type = netdev_name; | |
627 | *name = xstrdup(separator + 1); | |
628 | } else { | |
629 | *name = netdev_name; | |
630 | *type = xstrdup("system"); | |
631 | } | |
632 | } | |
633 | ||
f7791740 PS |
634 | /* Attempts to open a netdev_rxq handle for obtaining packets received on |
635 | * 'netdev'. On success, returns 0 and stores a nonnull 'netdev_rxq *' into | |
b73c8518 SH |
636 | * '*rxp'. On failure, returns a positive errno value and stores NULL into |
637 | * '*rxp'. | |
638 | * | |
639 | * Some kinds of network devices might not support receiving packets. This | |
640 | * function returns EOPNOTSUPP in that case.*/ | |
7b6b0ef4 | 641 | int |
55c955bd | 642 | netdev_rxq_open(struct netdev *netdev, struct netdev_rxq **rxp, int id) |
86383816 | 643 | OVS_EXCLUDED(netdev_mutex) |
7b6b0ef4 | 644 | { |
796223f5 | 645 | int error; |
7b6b0ef4 | 646 | |
55c955bd | 647 | if (netdev->netdev_class->rxq_alloc && id < netdev->n_rxq) { |
f7791740 | 648 | struct netdev_rxq *rx = netdev->netdev_class->rxq_alloc(); |
9dc63482 BP |
649 | if (rx) { |
650 | rx->netdev = netdev; | |
55c955bd | 651 | rx->queue_id = id; |
f7791740 | 652 | error = netdev->netdev_class->rxq_construct(rx); |
9dc63482 | 653 | if (!error) { |
a17ceb1b | 654 | netdev_ref(netdev); |
9dc63482 BP |
655 | *rxp = rx; |
656 | return 0; | |
657 | } | |
f7791740 | 658 | netdev->netdev_class->rxq_dealloc(rx); |
9dc63482 BP |
659 | } else { |
660 | error = ENOMEM; | |
661 | } | |
796223f5 | 662 | } else { |
9dc63482 | 663 | error = EOPNOTSUPP; |
796223f5 | 664 | } |
9dc63482 BP |
665 | |
666 | *rxp = NULL; | |
796223f5 BP |
667 | return error; |
668 | } | |
669 | ||
b73c8518 | 670 | /* Closes 'rx'. */ |
796223f5 | 671 | void |
f7791740 | 672 | netdev_rxq_close(struct netdev_rxq *rx) |
86383816 | 673 | OVS_EXCLUDED(netdev_mutex) |
796223f5 BP |
674 | { |
675 | if (rx) { | |
9dc63482 | 676 | struct netdev *netdev = rx->netdev; |
f7791740 PS |
677 | netdev->netdev_class->rxq_destruct(rx); |
678 | netdev->netdev_class->rxq_dealloc(rx); | |
9dc63482 | 679 | netdev_close(netdev); |
796223f5 | 680 | } |
7b6b0ef4 BP |
681 | } |
682 | ||
c90e4d9c MK |
683 | /* Attempts to receive a batch of packets from 'rx'. 'batch' should point to |
684 | * the beginning of an array of NETDEV_MAX_BURST pointers to dp_packet. If | |
685 | * successful, this function stores pointers to up to NETDEV_MAX_BURST | |
686 | * dp_packets into the array, transferring ownership of the packets to the | |
687 | * caller, stores the number of received packets in 'batch->count', and returns | |
688 | * 0. | |
b73c8518 | 689 | * |
e175dc83 | 690 | * The implementation does not necessarily initialize any non-data members of |
c90e4d9c | 691 | * 'batch'. That is, the caller must initialize layer pointers and metadata |
e175dc83 | 692 | * itself, if desired, e.g. with pkt_metadata_init() and miniflow_extract(). |
b73c8518 | 693 | * |
e175dc83 BP |
694 | * Returns EAGAIN immediately if no packet is ready to be received or another |
695 | * positive errno value if an error was encountered. */ | |
064af421 | 696 | int |
1895cc8d | 697 | netdev_rxq_recv(struct netdev_rxq *rx, struct dp_packet_batch *batch) |
064af421 | 698 | { |
8b61709d | 699 | int retval; |
064af421 | 700 | |
c90e4d9c | 701 | retval = rx->netdev->netdev_class->rxq_recv(rx, batch); |
bfd3367b | 702 | if (!retval) { |
064af421 | 703 | COVERAGE_INC(netdev_received); |
e175dc83 | 704 | } else { |
1895cc8d | 705 | batch->count = 0; |
064af421 | 706 | } |
df1e5a3b | 707 | return retval; |
064af421 BP |
708 | } |
709 | ||
b73c8518 SH |
710 | /* Arranges for poll_block() to wake up when a packet is ready to be received |
711 | * on 'rx'. */ | |
064af421 | 712 | void |
f7791740 | 713 | netdev_rxq_wait(struct netdev_rxq *rx) |
064af421 | 714 | { |
f7791740 | 715 | rx->netdev->netdev_class->rxq_wait(rx); |
064af421 BP |
716 | } |
717 | ||
b73c8518 | 718 | /* Discards any packets ready to be received on 'rx'. */ |
064af421 | 719 | int |
f7791740 | 720 | netdev_rxq_drain(struct netdev_rxq *rx) |
064af421 | 721 | { |
f7791740 PS |
722 | return (rx->netdev->netdev_class->rxq_drain |
723 | ? rx->netdev->netdev_class->rxq_drain(rx) | |
9dc63482 | 724 | : 0); |
064af421 BP |
725 | } |
726 | ||
050c60bf DDP |
727 | /* Configures the number of tx queues of 'netdev'. Returns 0 if successful, |
728 | * otherwise a positive errno value. | |
a0cb2d66 DDP |
729 | * |
730 | * 'n_txq' specifies the exact number of transmission queues to create. | |
a0cb2d66 | 731 | * |
050c60bf DDP |
732 | * The change might not effective immediately. The caller must check if a |
733 | * reconfiguration is required with netdev_is_reconf_required() and eventually | |
734 | * call netdev_reconfigure() before using the new queues. | |
735 | * | |
736 | * On error, the tx queue configuration is unchanged */ | |
5496878c | 737 | int |
050c60bf | 738 | netdev_set_tx_multiq(struct netdev *netdev, unsigned int n_txq) |
5496878c AW |
739 | { |
740 | int error; | |
741 | ||
050c60bf DDP |
742 | error = (netdev->netdev_class->set_tx_multiq |
743 | ? netdev->netdev_class->set_tx_multiq(netdev, MAX(n_txq, 1)) | |
5496878c AW |
744 | : EOPNOTSUPP); |
745 | ||
f6d0d4b3 | 746 | if (error && error != EOPNOTSUPP) { |
050c60bf | 747 | VLOG_DBG_RL(&rl, "failed to set tx queue for network device %s:" |
5496878c AW |
748 | "%s", netdev_get_name(netdev), ovs_strerror(error)); |
749 | } | |
750 | ||
751 | return error; | |
752 | } | |
753 | ||
875ab130 BP |
754 | enum netdev_pt_mode |
755 | netdev_get_pt_mode(const struct netdev *netdev) | |
756 | { | |
757 | return (netdev->netdev_class->get_pt_mode | |
758 | ? netdev->netdev_class->get_pt_mode(netdev) | |
759 | : NETDEV_PT_LEGACY_L2); | |
760 | } | |
761 | ||
aaca4fe0 | 762 | /* Sends 'batch' on 'netdev'. Returns 0 if successful (for every packet), |
f4fd623c DDP |
763 | * otherwise a positive errno value. Returns EAGAIN without blocking if |
764 | * at least one the packets cannot be queued immediately. Returns EMSGSIZE | |
765 | * if a partial packet was transmitted or if a packet is too big or too small | |
766 | * to transmit on the device. | |
767 | * | |
57eebbb4 DDP |
768 | * The caller must make sure that 'netdev' supports sending by making sure that |
769 | * 'netdev_n_txq(netdev)' returns >= 1. | |
770 | * | |
f4fd623c DDP |
771 | * If the function returns a non-zero value, some of the packets might have |
772 | * been sent anyway. | |
064af421 | 773 | * |
7dbd520e BP |
774 | * If 'may_steal' is false, the caller retains ownership of all the packets. |
775 | * If 'may_steal' is true, the caller transfers ownership of all the packets | |
776 | * to the network device, regardless of success. | |
064af421 | 777 | * |
324c8374 IM |
778 | * If 'concurrent_txq' is true, the caller may perform concurrent calls |
779 | * to netdev_send() with the same 'qid'. The netdev provider is responsible | |
780 | * for making sure that these concurrent calls do not create a race condition | |
781 | * by using locking or other synchronization if required. | |
782 | * | |
f00fa8cb AW |
783 | * The network device is expected to maintain one or more packet |
784 | * transmission queues, so that the caller does not ordinarily have to | |
785 | * do additional queuing of packets. 'qid' specifies the queue to use | |
786 | * and can be ignored if the implementation does not support multiple | |
14f137ba | 787 | * queues. */ |
064af421 | 788 | int |
1895cc8d | 789 | netdev_send(struct netdev *netdev, int qid, struct dp_packet_batch *batch, |
324c8374 | 790 | bool may_steal, bool concurrent_txq) |
064af421 | 791 | { |
324c8374 IM |
792 | int error = netdev->netdev_class->send(netdev, qid, batch, may_steal, |
793 | concurrent_txq); | |
8b61709d | 794 | if (!error) { |
064af421 | 795 | COVERAGE_INC(netdev_sent); |
aaca4fe0 WT |
796 | if (!may_steal) { |
797 | dp_packet_batch_reset_cutlen(batch); | |
798 | } | |
064af421 | 799 | } |
8b61709d | 800 | return error; |
064af421 BP |
801 | } |
802 | ||
57eebbb4 DDP |
803 | /* Pop tunnel header, build tunnel metadata and resize 'batch->packets' |
804 | * for further processing. | |
805 | * | |
806 | * The caller must make sure that 'netdev' support this operation by checking | |
807 | * that netdev_has_tunnel_push_pop() returns true. */ | |
9235b479 | 808 | void |
1895cc8d | 809 | netdev_pop_header(struct netdev *netdev, struct dp_packet_batch *batch) |
a36de779 | 810 | { |
72c84bc2 AZ |
811 | struct dp_packet *packet; |
812 | size_t i, size = dp_packet_batch_size(batch); | |
d625fbd1 | 813 | |
72c84bc2 AZ |
814 | DP_PACKET_BATCH_REFILL_FOR_EACH (i, size, packet, batch) { |
815 | packet = netdev->netdev_class->pop_header(packet); | |
816 | if (packet) { | |
1a2bb118 SC |
817 | /* Reset the checksum offload flags if present, to avoid wrong |
818 | * interpretation in the further packet processing when | |
819 | * recirculated.*/ | |
72c84bc2 AZ |
820 | reset_dp_packet_checksum_ol_flags(packet); |
821 | dp_packet_batch_refill(batch, packet, i); | |
d625fbd1 JG |
822 | } |
823 | } | |
a36de779 PS |
824 | } |
825 | ||
4975aa3e PS |
826 | void |
827 | netdev_init_tnl_build_header_params(struct netdev_tnl_build_header_params *params, | |
828 | const struct flow *tnl_flow, | |
829 | const struct in6_addr *src, | |
830 | struct eth_addr dmac, | |
831 | struct eth_addr smac) | |
832 | { | |
833 | params->flow = tnl_flow; | |
834 | params->dmac = dmac; | |
835 | params->smac = smac; | |
836 | params->s_ip = src; | |
837 | params->is_ipv6 = !IN6_IS_ADDR_V4MAPPED(src); | |
838 | } | |
839 | ||
840 | int netdev_build_header(const struct netdev *netdev, | |
841 | struct ovs_action_push_tnl *data, | |
842 | const struct netdev_tnl_build_header_params *params) | |
a36de779 PS |
843 | { |
844 | if (netdev->netdev_class->build_header) { | |
4975aa3e | 845 | return netdev->netdev_class->build_header(netdev, data, params); |
a36de779 PS |
846 | } |
847 | return EOPNOTSUPP; | |
848 | } | |
849 | ||
57eebbb4 DDP |
850 | /* Push tunnel header (reading from tunnel metadata) and resize |
851 | * 'batch->packets' for further processing. | |
852 | * | |
853 | * The caller must make sure that 'netdev' support this operation by checking | |
854 | * that netdev_has_tunnel_push_pop() returns true. */ | |
a36de779 PS |
855 | int |
856 | netdev_push_header(const struct netdev *netdev, | |
1895cc8d | 857 | struct dp_packet_batch *batch, |
a36de779 PS |
858 | const struct ovs_action_push_tnl *data) |
859 | { | |
72c84bc2 AZ |
860 | struct dp_packet *packet; |
861 | DP_PACKET_BATCH_FOR_EACH (packet, batch) { | |
862 | netdev->netdev_class->push_header(packet, data); | |
81765c00 | 863 | pkt_metadata_init(&packet->md, data->out_port); |
d625fbd1 JG |
864 | } |
865 | ||
866 | return 0; | |
a36de779 PS |
867 | } |
868 | ||
064af421 BP |
869 | /* Registers with the poll loop to wake up from the next call to poll_block() |
870 | * when the packet transmission queue has sufficient room to transmit a packet | |
871 | * with netdev_send(). | |
872 | * | |
f00fa8cb AW |
873 | * The network device is expected to maintain one or more packet |
874 | * transmission queues, so that the caller does not ordinarily have to | |
875 | * do additional queuing of packets. 'qid' specifies the queue to use | |
876 | * and can be ignored if the implementation does not support multiple | |
877 | * queues. */ | |
064af421 | 878 | void |
f00fa8cb | 879 | netdev_send_wait(struct netdev *netdev, int qid) |
064af421 | 880 | { |
b5d57fc8 | 881 | if (netdev->netdev_class->send_wait) { |
f00fa8cb | 882 | netdev->netdev_class->send_wait(netdev, qid); |
1ac98180 | 883 | } |
064af421 BP |
884 | } |
885 | ||
886 | /* Attempts to set 'netdev''s MAC address to 'mac'. Returns 0 if successful, | |
887 | * otherwise a positive errno value. */ | |
888 | int | |
74ff3298 | 889 | netdev_set_etheraddr(struct netdev *netdev, const struct eth_addr mac) |
064af421 | 890 | { |
b5d57fc8 | 891 | return netdev->netdev_class->set_etheraddr(netdev, mac); |
064af421 BP |
892 | } |
893 | ||
80992a35 BP |
894 | /* Retrieves 'netdev''s MAC address. If successful, returns 0 and copies the |
895 | * the MAC address into 'mac'. On failure, returns a positive errno value and | |
896 | * clears 'mac' to all-zeros. */ | |
897 | int | |
74ff3298 | 898 | netdev_get_etheraddr(const struct netdev *netdev, struct eth_addr *mac) |
064af421 | 899 | { |
59b1e023 YS |
900 | int error; |
901 | ||
902 | error = netdev->netdev_class->get_etheraddr(netdev, mac); | |
903 | if (error) { | |
904 | memset(mac, 0, sizeof *mac); | |
905 | } | |
906 | return error; | |
064af421 BP |
907 | } |
908 | ||
909 | /* Returns the name of the network device that 'netdev' represents, | |
910 | * e.g. "eth0". The caller must not modify or free the returned string. */ | |
911 | const char * | |
912 | netdev_get_name(const struct netdev *netdev) | |
913 | { | |
b5d57fc8 | 914 | return netdev->name; |
064af421 BP |
915 | } |
916 | ||
3d222126 BP |
917 | /* Retrieves the MTU of 'netdev'. The MTU is the maximum size of transmitted |
918 | * (and received) packets, in bytes, not including the hardware header; thus, | |
919 | * this is typically 1500 bytes for Ethernet devices. | |
920 | * | |
9b020780 PS |
921 | * If successful, returns 0 and stores the MTU size in '*mtup'. Returns |
922 | * EOPNOTSUPP if 'netdev' does not have an MTU (as e.g. some tunnels do not). | |
14622f22 BP |
923 | * On other failure, returns a positive errno value. On failure, sets '*mtup' |
924 | * to 0. */ | |
064af421 | 925 | int |
3d222126 | 926 | netdev_get_mtu(const struct netdev *netdev, int *mtup) |
064af421 | 927 | { |
b5d57fc8 | 928 | const struct netdev_class *class = netdev->netdev_class; |
14622f22 BP |
929 | int error; |
930 | ||
931 | error = class->get_mtu ? class->get_mtu(netdev, mtup) : EOPNOTSUPP; | |
932 | if (error) { | |
933 | *mtup = 0; | |
934 | if (error != EOPNOTSUPP) { | |
90a6637d | 935 | VLOG_DBG_RL(&rl, "failed to retrieve MTU for network device %s: " |
10a89ef0 | 936 | "%s", netdev_get_name(netdev), ovs_strerror(error)); |
14622f22 | 937 | } |
8b61709d BP |
938 | } |
939 | return error; | |
064af421 BP |
940 | } |
941 | ||
9b020780 PS |
942 | /* Sets the MTU of 'netdev'. The MTU is the maximum size of transmitted |
943 | * (and received) packets, in bytes. | |
944 | * | |
945 | * If successful, returns 0. Returns EOPNOTSUPP if 'netdev' does not have an | |
946 | * MTU (as e.g. some tunnels do not). On other failure, returns a positive | |
947 | * errno value. */ | |
948 | int | |
4124cb12 | 949 | netdev_set_mtu(struct netdev *netdev, int mtu) |
9b020780 | 950 | { |
b5d57fc8 | 951 | const struct netdev_class *class = netdev->netdev_class; |
14622f22 | 952 | int error; |
9b020780 | 953 | |
14622f22 | 954 | error = class->set_mtu ? class->set_mtu(netdev, mtu) : EOPNOTSUPP; |
9b020780 | 955 | if (error && error != EOPNOTSUPP) { |
90a6637d | 956 | VLOG_DBG_RL(&rl, "failed to set MTU for network device %s: %s", |
10a89ef0 | 957 | netdev_get_name(netdev), ovs_strerror(error)); |
9b020780 PS |
958 | } |
959 | ||
960 | return error; | |
961 | } | |
962 | ||
3a414a0a DDP |
963 | /* If 'user_config' is true, the user wants to control 'netdev''s MTU and we |
964 | * should not override it. If 'user_config' is false, we may adjust | |
965 | * 'netdev''s MTU (e.g., if 'netdev' is internal). */ | |
966 | void | |
967 | netdev_mtu_user_config(struct netdev *netdev, bool user_config) | |
968 | { | |
969 | if (netdev->mtu_user_config != user_config) { | |
970 | netdev_change_seq_changed(netdev); | |
971 | netdev->mtu_user_config = user_config; | |
972 | } | |
973 | } | |
974 | ||
975 | /* Returns 'true' if the user explicitly specified an MTU value for 'netdev'. | |
976 | * Otherwise, returns 'false', in which case we are allowed to adjust the | |
977 | * device MTU. */ | |
978 | bool | |
979 | netdev_mtu_is_user_config(struct netdev *netdev) | |
980 | { | |
981 | return netdev->mtu_user_config; | |
982 | } | |
983 | ||
9ab3d9a3 BP |
984 | /* Returns the ifindex of 'netdev', if successful, as a positive number. On |
985 | * failure, returns a negative errno value. | |
986 | * | |
987 | * The desired semantics of the ifindex value are a combination of those | |
988 | * specified by POSIX for if_nametoindex() and by SNMP for ifIndex. An ifindex | |
989 | * value should be unique within a host and remain stable at least until | |
990 | * reboot. SNMP says an ifindex "ranges between 1 and the value of ifNumber" | |
991 | * but many systems do not follow this rule anyhow. | |
4c0f1780 JG |
992 | * |
993 | * Some network devices may not implement support for this function. In such | |
994 | * cases this function will always return -EOPNOTSUPP. | |
9ab3d9a3 BP |
995 | */ |
996 | int | |
997 | netdev_get_ifindex(const struct netdev *netdev) | |
998 | { | |
4c0f1780 JG |
999 | int (*get_ifindex)(const struct netdev *); |
1000 | ||
b5d57fc8 | 1001 | get_ifindex = netdev->netdev_class->get_ifindex; |
4c0f1780 JG |
1002 | |
1003 | return get_ifindex ? get_ifindex(netdev) : -EOPNOTSUPP; | |
9ab3d9a3 BP |
1004 | } |
1005 | ||
064af421 BP |
1006 | /* Stores the features supported by 'netdev' into each of '*current', |
1007 | * '*advertised', '*supported', and '*peer' that are non-null. Each value is a | |
1008 | * bitmap of "enum ofp_port_features" bits, in host byte order. Returns 0 if | |
1009 | * successful, otherwise a positive errno value. On failure, all of the | |
4c0f1780 JG |
1010 | * passed-in values are set to 0. |
1011 | * | |
1012 | * Some network devices may not implement support for this function. In such | |
c1fdab01 | 1013 | * cases this function will always return EOPNOTSUPP. */ |
064af421 | 1014 | int |
6f2f5cce | 1015 | netdev_get_features(const struct netdev *netdev, |
6c038611 BP |
1016 | enum netdev_features *current, |
1017 | enum netdev_features *advertised, | |
1018 | enum netdev_features *supported, | |
1019 | enum netdev_features *peer) | |
064af421 | 1020 | { |
6f2f5cce | 1021 | int (*get_features)(const struct netdev *netdev, |
6c038611 BP |
1022 | enum netdev_features *current, |
1023 | enum netdev_features *advertised, | |
1024 | enum netdev_features *supported, | |
1025 | enum netdev_features *peer); | |
1026 | enum netdev_features dummy[4]; | |
7671589a BP |
1027 | int error; |
1028 | ||
1029 | if (!current) { | |
1030 | current = &dummy[0]; | |
1031 | } | |
1032 | if (!advertised) { | |
1033 | advertised = &dummy[1]; | |
1034 | } | |
1035 | if (!supported) { | |
1036 | supported = &dummy[2]; | |
1037 | } | |
1038 | if (!peer) { | |
1039 | peer = &dummy[3]; | |
1040 | } | |
1041 | ||
b5d57fc8 | 1042 | get_features = netdev->netdev_class->get_features; |
4c0f1780 | 1043 | error = get_features |
a00ca915 EJ |
1044 | ? get_features(netdev, current, advertised, supported, |
1045 | peer) | |
4c0f1780 | 1046 | : EOPNOTSUPP; |
7671589a BP |
1047 | if (error) { |
1048 | *current = *advertised = *supported = *peer = 0; | |
1049 | } | |
1050 | return error; | |
064af421 BP |
1051 | } |
1052 | ||
6c038611 BP |
1053 | /* Returns the maximum speed of a network connection that has the NETDEV_F_* |
1054 | * bits in 'features', in bits per second. If no bits that indicate a speed | |
d02a5f8e | 1055 | * are set in 'features', returns 'default_bps'. */ |
622ee2cf | 1056 | uint64_t |
d02a5f8e BP |
1057 | netdev_features_to_bps(enum netdev_features features, |
1058 | uint64_t default_bps) | |
622ee2cf BP |
1059 | { |
1060 | enum { | |
6c038611 BP |
1061 | F_1000000MB = NETDEV_F_1TB_FD, |
1062 | F_100000MB = NETDEV_F_100GB_FD, | |
1063 | F_40000MB = NETDEV_F_40GB_FD, | |
1064 | F_10000MB = NETDEV_F_10GB_FD, | |
1065 | F_1000MB = NETDEV_F_1GB_HD | NETDEV_F_1GB_FD, | |
1066 | F_100MB = NETDEV_F_100MB_HD | NETDEV_F_100MB_FD, | |
1067 | F_10MB = NETDEV_F_10MB_HD | NETDEV_F_10MB_FD | |
622ee2cf BP |
1068 | }; |
1069 | ||
6c038611 BP |
1070 | return ( features & F_1000000MB ? UINT64_C(1000000000000) |
1071 | : features & F_100000MB ? UINT64_C(100000000000) | |
1072 | : features & F_40000MB ? UINT64_C(40000000000) | |
1073 | : features & F_10000MB ? UINT64_C(10000000000) | |
1074 | : features & F_1000MB ? UINT64_C(1000000000) | |
1075 | : features & F_100MB ? UINT64_C(100000000) | |
1076 | : features & F_10MB ? UINT64_C(10000000) | |
d02a5f8e | 1077 | : default_bps); |
622ee2cf BP |
1078 | } |
1079 | ||
6c038611 BP |
1080 | /* Returns true if any of the NETDEV_F_* bits that indicate a full-duplex link |
1081 | * are set in 'features', otherwise false. */ | |
622ee2cf | 1082 | bool |
6c038611 | 1083 | netdev_features_is_full_duplex(enum netdev_features features) |
622ee2cf | 1084 | { |
6c038611 BP |
1085 | return (features & (NETDEV_F_10MB_FD | NETDEV_F_100MB_FD | NETDEV_F_1GB_FD |
1086 | | NETDEV_F_10GB_FD | NETDEV_F_40GB_FD | |
1087 | | NETDEV_F_100GB_FD | NETDEV_F_1TB_FD)) != 0; | |
622ee2cf BP |
1088 | } |
1089 | ||
8b61709d BP |
1090 | /* Set the features advertised by 'netdev' to 'advertise'. Returns 0 if |
1091 | * successful, otherwise a positive errno value. */ | |
064af421 | 1092 | int |
6c038611 BP |
1093 | netdev_set_advertisements(struct netdev *netdev, |
1094 | enum netdev_features advertise) | |
064af421 | 1095 | { |
b5d57fc8 BP |
1096 | return (netdev->netdev_class->set_advertisements |
1097 | ? netdev->netdev_class->set_advertisements( | |
a4af0040 | 1098 | netdev, advertise) |
8b61709d | 1099 | : EOPNOTSUPP); |
064af421 BP |
1100 | } |
1101 | ||
064af421 BP |
1102 | /* Assigns 'addr' as 'netdev''s IPv4 address and 'mask' as its netmask. If |
1103 | * 'addr' is INADDR_ANY, 'netdev''s IPv4 address is cleared. Returns a | |
1104 | * positive errno value. */ | |
1105 | int | |
1106 | netdev_set_in4(struct netdev *netdev, struct in_addr addr, struct in_addr mask) | |
1107 | { | |
b5d57fc8 BP |
1108 | return (netdev->netdev_class->set_in4 |
1109 | ? netdev->netdev_class->set_in4(netdev, addr, mask) | |
8b61709d | 1110 | : EOPNOTSUPP); |
064af421 BP |
1111 | } |
1112 | ||
733adf2a LG |
1113 | /* Obtains ad IPv4 address from device name and save the address in |
1114 | * in4. Returns 0 if successful, otherwise a positive errno value. | |
1115 | */ | |
1116 | int | |
1117 | netdev_get_in4_by_name(const char *device_name, struct in_addr *in4) | |
1118 | { | |
6b6e1329 PS |
1119 | struct in6_addr *mask, *addr6; |
1120 | int err, n_in6, i; | |
1121 | struct netdev *dev; | |
733adf2a | 1122 | |
6b6e1329 PS |
1123 | err = netdev_open(device_name, NULL, &dev); |
1124 | if (err) { | |
1125 | return err; | |
733adf2a LG |
1126 | } |
1127 | ||
6b6e1329 PS |
1128 | err = netdev_get_addr_list(dev, &addr6, &mask, &n_in6); |
1129 | if (err) { | |
1130 | goto out; | |
1131 | } | |
1132 | ||
1133 | for (i = 0; i < n_in6; i++) { | |
1134 | if (IN6_IS_ADDR_V4MAPPED(&addr6[i])) { | |
1135 | in4->s_addr = in6_addr_get_mapped_ipv4(&addr6[i]); | |
1136 | goto out; | |
1137 | } | |
1138 | } | |
1139 | err = -ENOENT; | |
1140 | out: | |
1141 | free(addr6); | |
1142 | free(mask); | |
1143 | netdev_close(dev); | |
1144 | return err; | |
1145 | ||
733adf2a LG |
1146 | } |
1147 | ||
0efaf4b5 BP |
1148 | /* Adds 'router' as a default IP gateway for the TCP/IP stack that corresponds |
1149 | * to 'netdev'. */ | |
064af421 | 1150 | int |
8b61709d | 1151 | netdev_add_router(struct netdev *netdev, struct in_addr router) |
064af421 | 1152 | { |
064af421 | 1153 | COVERAGE_INC(netdev_add_router); |
b5d57fc8 BP |
1154 | return (netdev->netdev_class->add_router |
1155 | ? netdev->netdev_class->add_router(netdev, router) | |
8b61709d | 1156 | : EOPNOTSUPP); |
064af421 BP |
1157 | } |
1158 | ||
f1acd62b BP |
1159 | /* Looks up the next hop for 'host' for the TCP/IP stack that corresponds to |
1160 | * 'netdev'. If a route cannot not be determined, sets '*next_hop' to 0, | |
1161 | * '*netdev_name' to null, and returns a positive errno value. Otherwise, if a | |
1162 | * next hop is found, stores the next hop gateway's address (0 if 'host' is on | |
1163 | * a directly connected network) in '*next_hop' and a copy of the name of the | |
1164 | * device to reach 'host' in '*netdev_name', and returns 0. The caller is | |
1165 | * responsible for freeing '*netdev_name' (by calling free()). */ | |
1166 | int | |
1167 | netdev_get_next_hop(const struct netdev *netdev, | |
1168 | const struct in_addr *host, struct in_addr *next_hop, | |
1169 | char **netdev_name) | |
1170 | { | |
b5d57fc8 BP |
1171 | int error = (netdev->netdev_class->get_next_hop |
1172 | ? netdev->netdev_class->get_next_hop( | |
a4af0040 | 1173 | host, next_hop, netdev_name) |
f1acd62b | 1174 | : EOPNOTSUPP); |
064af421 | 1175 | if (error) { |
f1acd62b BP |
1176 | next_hop->s_addr = 0; |
1177 | *netdev_name = NULL; | |
064af421 BP |
1178 | } |
1179 | return error; | |
1180 | } | |
1181 | ||
79f1cbe9 | 1182 | /* Populates 'smap' with status information. |
ea763e0e | 1183 | * |
79f1cbe9 EJ |
1184 | * Populates 'smap' with 'netdev' specific status information. This |
1185 | * information may be used to populate the status column of the Interface table | |
1186 | * as defined in ovs-vswitchd.conf.db(5). */ | |
ea763e0e | 1187 | int |
275707c3 | 1188 | netdev_get_status(const struct netdev *netdev, struct smap *smap) |
ea83a2fc | 1189 | { |
b5d57fc8 BP |
1190 | return (netdev->netdev_class->get_status |
1191 | ? netdev->netdev_class->get_status(netdev, smap) | |
ea763e0e | 1192 | : EOPNOTSUPP); |
ea83a2fc EJ |
1193 | } |
1194 | ||
a8704b50 PS |
1195 | /* Returns all assigned IP address to 'netdev' and returns 0. |
1196 | * API allocates array of address and masks and set it to | |
1197 | * '*addr' and '*mask'. | |
1198 | * Otherwise, returns a positive errno value and sets '*addr', '*mask | |
1199 | * and '*n_addr' to NULL. | |
8b61709d BP |
1200 | * |
1201 | * The following error values have well-defined meanings: | |
1202 | * | |
1203 | * - EADDRNOTAVAIL: 'netdev' has no assigned IPv6 address. | |
1204 | * | |
1205 | * - EOPNOTSUPP: No IPv6 network stack attached to 'netdev'. | |
1206 | * | |
a8704b50 | 1207 | * 'addr' may be null, in which case the address itself is not reported. */ |
064af421 | 1208 | int |
a8704b50 PS |
1209 | netdev_get_addr_list(const struct netdev *netdev, struct in6_addr **addr, |
1210 | struct in6_addr **mask, int *n_addr) | |
064af421 | 1211 | { |
8b61709d | 1212 | int error; |
b1bf7d43 | 1213 | |
a8704b50 PS |
1214 | error = (netdev->netdev_class->get_addr_list |
1215 | ? netdev->netdev_class->get_addr_list(netdev, addr, mask, n_addr): EOPNOTSUPP); | |
1216 | if (error && addr) { | |
1217 | *addr = NULL; | |
1218 | *mask = NULL; | |
1219 | *n_addr = 0; | |
b1bf7d43 | 1220 | } |
a8704b50 | 1221 | |
8b61709d | 1222 | return error; |
064af421 BP |
1223 | } |
1224 | ||
1225 | /* On 'netdev', turns off the flags in 'off' and then turns on the flags in | |
4b609110 | 1226 | * 'on'. Returns 0 if successful, otherwise a positive errno value. */ |
064af421 BP |
1227 | static int |
1228 | do_update_flags(struct netdev *netdev, enum netdev_flags off, | |
8b61709d | 1229 | enum netdev_flags on, enum netdev_flags *old_flagsp, |
4b609110 | 1230 | struct netdev_saved_flags **sfp) |
86383816 | 1231 | OVS_EXCLUDED(netdev_mutex) |
064af421 | 1232 | { |
4b609110 | 1233 | struct netdev_saved_flags *sf = NULL; |
8b61709d | 1234 | enum netdev_flags old_flags; |
064af421 BP |
1235 | int error; |
1236 | ||
b5d57fc8 BP |
1237 | error = netdev->netdev_class->update_flags(netdev, off & ~on, on, |
1238 | &old_flags); | |
064af421 | 1239 | if (error) { |
8b61709d BP |
1240 | VLOG_WARN_RL(&rl, "failed to %s flags for network device %s: %s", |
1241 | off || on ? "set" : "get", netdev_get_name(netdev), | |
10a89ef0 | 1242 | ovs_strerror(error)); |
8b61709d | 1243 | old_flags = 0; |
4b609110 | 1244 | } else if ((off || on) && sfp) { |
8b61709d BP |
1245 | enum netdev_flags new_flags = (old_flags & ~off) | on; |
1246 | enum netdev_flags changed_flags = old_flags ^ new_flags; | |
1247 | if (changed_flags) { | |
86383816 | 1248 | ovs_mutex_lock(&netdev_mutex); |
4b609110 | 1249 | *sfp = sf = xmalloc(sizeof *sf); |
b5d57fc8 | 1250 | sf->netdev = netdev; |
417e7e66 | 1251 | ovs_list_push_front(&netdev->saved_flags_list, &sf->node); |
4b609110 BP |
1252 | sf->saved_flags = changed_flags; |
1253 | sf->saved_values = changed_flags & new_flags; | |
1254 | ||
b5d57fc8 | 1255 | netdev->ref_cnt++; |
86383816 | 1256 | ovs_mutex_unlock(&netdev_mutex); |
8b61709d | 1257 | } |
064af421 | 1258 | } |
4b609110 | 1259 | |
8b61709d BP |
1260 | if (old_flagsp) { |
1261 | *old_flagsp = old_flags; | |
064af421 | 1262 | } |
4b609110 BP |
1263 | if (sfp) { |
1264 | *sfp = sf; | |
1265 | } | |
1266 | ||
064af421 BP |
1267 | return error; |
1268 | } | |
1269 | ||
8b61709d BP |
1270 | /* Obtains the current flags for 'netdev' and stores them into '*flagsp'. |
1271 | * Returns 0 if successful, otherwise a positive errno value. On failure, | |
1272 | * stores 0 into '*flagsp'. */ | |
1273 | int | |
1274 | netdev_get_flags(const struct netdev *netdev_, enum netdev_flags *flagsp) | |
1275 | { | |
ebc56baa | 1276 | struct netdev *netdev = CONST_CAST(struct netdev *, netdev_); |
4b609110 | 1277 | return do_update_flags(netdev, 0, 0, flagsp, NULL); |
8b61709d BP |
1278 | } |
1279 | ||
064af421 | 1280 | /* Sets the flags for 'netdev' to 'flags'. |
064af421 BP |
1281 | * Returns 0 if successful, otherwise a positive errno value. */ |
1282 | int | |
1283 | netdev_set_flags(struct netdev *netdev, enum netdev_flags flags, | |
4b609110 | 1284 | struct netdev_saved_flags **sfp) |
064af421 | 1285 | { |
4b609110 | 1286 | return do_update_flags(netdev, -1, flags, NULL, sfp); |
064af421 BP |
1287 | } |
1288 | ||
4b609110 BP |
1289 | /* Turns on the specified 'flags' on 'netdev': |
1290 | * | |
1291 | * - On success, returns 0. If 'sfp' is nonnull, sets '*sfp' to a newly | |
1292 | * allocated 'struct netdev_saved_flags *' that may be passed to | |
1293 | * netdev_restore_flags() to restore the original values of 'flags' on | |
1294 | * 'netdev' (this will happen automatically at program termination if | |
1295 | * netdev_restore_flags() is never called) , or to NULL if no flags were | |
1296 | * actually changed. | |
1297 | * | |
1298 | * - On failure, returns a positive errno value. If 'sfp' is nonnull, sets | |
1299 | * '*sfp' to NULL. */ | |
064af421 BP |
1300 | int |
1301 | netdev_turn_flags_on(struct netdev *netdev, enum netdev_flags flags, | |
4b609110 | 1302 | struct netdev_saved_flags **sfp) |
064af421 | 1303 | { |
4b609110 | 1304 | return do_update_flags(netdev, 0, flags, NULL, sfp); |
064af421 BP |
1305 | } |
1306 | ||
4b609110 BP |
1307 | /* Turns off the specified 'flags' on 'netdev'. See netdev_turn_flags_on() for |
1308 | * details of the interface. */ | |
064af421 BP |
1309 | int |
1310 | netdev_turn_flags_off(struct netdev *netdev, enum netdev_flags flags, | |
4b609110 BP |
1311 | struct netdev_saved_flags **sfp) |
1312 | { | |
1313 | return do_update_flags(netdev, flags, 0, NULL, sfp); | |
1314 | } | |
1315 | ||
1316 | /* Restores the flags that were saved in 'sf', and destroys 'sf'. | |
1317 | * Does nothing if 'sf' is NULL. */ | |
1318 | void | |
1319 | netdev_restore_flags(struct netdev_saved_flags *sf) | |
86383816 | 1320 | OVS_EXCLUDED(netdev_mutex) |
064af421 | 1321 | { |
4b609110 | 1322 | if (sf) { |
b5d57fc8 | 1323 | struct netdev *netdev = sf->netdev; |
4b609110 BP |
1324 | enum netdev_flags old_flags; |
1325 | ||
b5d57fc8 BP |
1326 | netdev->netdev_class->update_flags(netdev, |
1327 | sf->saved_flags & sf->saved_values, | |
1328 | sf->saved_flags & ~sf->saved_values, | |
1329 | &old_flags); | |
86383816 BP |
1330 | |
1331 | ovs_mutex_lock(&netdev_mutex); | |
417e7e66 | 1332 | ovs_list_remove(&sf->node); |
4b609110 | 1333 | free(sf); |
b5d57fc8 | 1334 | netdev_unref(netdev); |
4b609110 | 1335 | } |
064af421 BP |
1336 | } |
1337 | ||
1338 | /* Looks up the ARP table entry for 'ip' on 'netdev'. If one exists and can be | |
1339 | * successfully retrieved, it stores the corresponding MAC address in 'mac' and | |
1340 | * returns 0. Otherwise, it returns a positive errno value; in particular, | |
8b61709d | 1341 | * ENXIO indicates that there is no ARP table entry for 'ip' on 'netdev'. */ |
064af421 | 1342 | int |
8b61709d | 1343 | netdev_arp_lookup(const struct netdev *netdev, |
74ff3298 | 1344 | ovs_be32 ip, struct eth_addr *mac) |
064af421 | 1345 | { |
b5d57fc8 | 1346 | int error = (netdev->netdev_class->arp_lookup |
15aee116 | 1347 | ? netdev->netdev_class->arp_lookup(netdev, ip, mac) |
8b61709d | 1348 | : EOPNOTSUPP); |
064af421 | 1349 | if (error) { |
74ff3298 | 1350 | *mac = eth_addr_zero; |
064af421 | 1351 | } |
8b61709d | 1352 | return error; |
064af421 BP |
1353 | } |
1354 | ||
85da620e JG |
1355 | /* Returns true if carrier is active (link light is on) on 'netdev'. */ |
1356 | bool | |
1357 | netdev_get_carrier(const struct netdev *netdev) | |
064af421 | 1358 | { |
85da620e JG |
1359 | int error; |
1360 | enum netdev_flags flags; | |
1361 | bool carrier; | |
1362 | ||
1363 | netdev_get_flags(netdev, &flags); | |
1364 | if (!(flags & NETDEV_UP)) { | |
1365 | return false; | |
1366 | } | |
1367 | ||
b5d57fc8 | 1368 | if (!netdev->netdev_class->get_carrier) { |
85da620e JG |
1369 | return true; |
1370 | } | |
1371 | ||
15aee116 | 1372 | error = netdev->netdev_class->get_carrier(netdev, &carrier); |
8b61709d | 1373 | if (error) { |
85da620e | 1374 | VLOG_DBG("%s: failed to get network device carrier status, assuming " |
10a89ef0 | 1375 | "down: %s", netdev_get_name(netdev), ovs_strerror(error)); |
85da620e | 1376 | carrier = false; |
064af421 | 1377 | } |
85da620e JG |
1378 | |
1379 | return carrier; | |
064af421 BP |
1380 | } |
1381 | ||
65c3058c EJ |
1382 | /* Returns the number of times 'netdev''s carrier has changed. */ |
1383 | long long int | |
1384 | netdev_get_carrier_resets(const struct netdev *netdev) | |
1385 | { | |
b5d57fc8 BP |
1386 | return (netdev->netdev_class->get_carrier_resets |
1387 | ? netdev->netdev_class->get_carrier_resets(netdev) | |
65c3058c EJ |
1388 | : 0); |
1389 | } | |
1390 | ||
1670c579 EJ |
1391 | /* Attempts to force netdev_get_carrier() to poll 'netdev''s MII registers for |
1392 | * link status instead of checking 'netdev''s carrier. 'netdev''s MII | |
1393 | * registers will be polled once ever 'interval' milliseconds. If 'netdev' | |
1394 | * does not support MII, another method may be used as a fallback. If | |
1395 | * 'interval' is less than or equal to zero, reverts netdev_get_carrier() to | |
1396 | * its normal behavior. | |
1397 | * | |
1398 | * Returns 0 if successful, otherwise a positive errno value. */ | |
1399 | int | |
1400 | netdev_set_miimon_interval(struct netdev *netdev, long long int interval) | |
63331829 | 1401 | { |
b5d57fc8 BP |
1402 | return (netdev->netdev_class->set_miimon_interval |
1403 | ? netdev->netdev_class->set_miimon_interval(netdev, interval) | |
1670c579 | 1404 | : EOPNOTSUPP); |
63331829 EJ |
1405 | } |
1406 | ||
887fd0ba | 1407 | /* Retrieves current device stats for 'netdev'. */ |
064af421 BP |
1408 | int |
1409 | netdev_get_stats(const struct netdev *netdev, struct netdev_stats *stats) | |
1410 | { | |
1411 | int error; | |
1412 | ||
d6e3feb5 | 1413 | /* Statistics are initialized before passing it to particular device |
1414 | * implementation so all values are filtered out by default. */ | |
1415 | memset(stats, 0xFF, sizeof *stats); | |
1416 | ||
064af421 | 1417 | COVERAGE_INC(netdev_get_stats); |
b5d57fc8 BP |
1418 | error = (netdev->netdev_class->get_stats |
1419 | ? netdev->netdev_class->get_stats(netdev, stats) | |
8b61709d | 1420 | : EOPNOTSUPP); |
064af421 | 1421 | if (error) { |
d6e3feb5 | 1422 | /* In case of error all statistics are filtered out */ |
064af421 BP |
1423 | memset(stats, 0xff, sizeof *stats); |
1424 | } | |
1425 | return error; | |
1426 | } | |
1427 | ||
8b61709d BP |
1428 | /* Attempts to set input rate limiting (policing) policy, such that up to |
1429 | * 'kbits_rate' kbps of traffic is accepted, with a maximum accumulative burst | |
1430 | * size of 'kbits' kb. */ | |
064af421 | 1431 | int |
b1bf7d43 BP |
1432 | netdev_set_policing(struct netdev *netdev, uint32_t kbits_rate, |
1433 | uint32_t kbits_burst) | |
064af421 | 1434 | { |
b5d57fc8 BP |
1435 | return (netdev->netdev_class->set_policing |
1436 | ? netdev->netdev_class->set_policing(netdev, | |
a4af0040 | 1437 | kbits_rate, kbits_burst) |
8b61709d | 1438 | : EOPNOTSUPP); |
064af421 BP |
1439 | } |
1440 | ||
c1c9c9c4 BP |
1441 | /* Adds to 'types' all of the forms of QoS supported by 'netdev', or leaves it |
1442 | * empty if 'netdev' does not support QoS. Any names added to 'types' should | |
1443 | * be documented as valid for the "type" column in the "QoS" table in | |
1444 | * vswitchd/vswitch.xml (which is built as ovs-vswitchd.conf.db(8)). | |
1445 | * | |
1446 | * Every network device supports disabling QoS with a type of "", but this type | |
1447 | * will not be added to 'types'. | |
1448 | * | |
19993ef3 | 1449 | * The caller must initialize 'types' (e.g. with sset_init()) before calling |
c1c9c9c4 | 1450 | * this function. The caller is responsible for destroying 'types' (e.g. with |
19993ef3 | 1451 | * sset_destroy()) when it is no longer needed. |
c1c9c9c4 BP |
1452 | * |
1453 | * Returns 0 if successful, otherwise a positive errno value. */ | |
1454 | int | |
19993ef3 | 1455 | netdev_get_qos_types(const struct netdev *netdev, struct sset *types) |
c1c9c9c4 | 1456 | { |
b5d57fc8 | 1457 | const struct netdev_class *class = netdev->netdev_class; |
c1c9c9c4 BP |
1458 | return (class->get_qos_types |
1459 | ? class->get_qos_types(netdev, types) | |
1460 | : 0); | |
1461 | } | |
1462 | ||
1463 | /* Queries 'netdev' for its capabilities regarding the specified 'type' of QoS, | |
1464 | * which should be "" or one of the types returned by netdev_get_qos_types() | |
1465 | * for 'netdev'. Returns 0 if successful, otherwise a positive errno value. | |
1466 | * On success, initializes 'caps' with the QoS capabilities; on failure, clears | |
1467 | * 'caps' to all zeros. */ | |
1468 | int | |
1469 | netdev_get_qos_capabilities(const struct netdev *netdev, const char *type, | |
1470 | struct netdev_qos_capabilities *caps) | |
1471 | { | |
b5d57fc8 | 1472 | const struct netdev_class *class = netdev->netdev_class; |
c1c9c9c4 BP |
1473 | |
1474 | if (*type) { | |
1475 | int retval = (class->get_qos_capabilities | |
1476 | ? class->get_qos_capabilities(netdev, type, caps) | |
1477 | : EOPNOTSUPP); | |
1478 | if (retval) { | |
1479 | memset(caps, 0, sizeof *caps); | |
1480 | } | |
1481 | return retval; | |
1482 | } else { | |
1483 | /* Every netdev supports turning off QoS. */ | |
1484 | memset(caps, 0, sizeof *caps); | |
1485 | return 0; | |
1486 | } | |
1487 | } | |
1488 | ||
1489 | /* Obtains the number of queues supported by 'netdev' for the specified 'type' | |
1490 | * of QoS. Returns 0 if successful, otherwise a positive errno value. Stores | |
1491 | * the number of queues (zero on failure) in '*n_queuesp'. | |
1492 | * | |
1493 | * This is just a simple wrapper around netdev_get_qos_capabilities(). */ | |
1494 | int | |
1495 | netdev_get_n_queues(const struct netdev *netdev, | |
1496 | const char *type, unsigned int *n_queuesp) | |
1497 | { | |
1498 | struct netdev_qos_capabilities caps; | |
1499 | int retval; | |
1500 | ||
1501 | retval = netdev_get_qos_capabilities(netdev, type, &caps); | |
1502 | *n_queuesp = caps.n_queues; | |
1503 | return retval; | |
1504 | } | |
1505 | ||
1506 | /* Queries 'netdev' about its currently configured form of QoS. If successful, | |
1507 | * stores the name of the current form of QoS into '*typep', stores any details | |
1508 | * of configuration as string key-value pairs in 'details', and returns 0. On | |
1509 | * failure, sets '*typep' to NULL and returns a positive errno value. | |
1510 | * | |
1511 | * A '*typep' of "" indicates that QoS is currently disabled on 'netdev'. | |
1512 | * | |
79f1cbe9 EJ |
1513 | * The caller must initialize 'details' as an empty smap (e.g. with |
1514 | * smap_init()) before calling this function. The caller must free 'details' | |
1515 | * when it is no longer needed (e.g. with smap_destroy()). | |
c1c9c9c4 BP |
1516 | * |
1517 | * The caller must not modify or free '*typep'. | |
1518 | * | |
1519 | * '*typep' will be one of the types returned by netdev_get_qos_types() for | |
1520 | * 'netdev'. The contents of 'details' should be documented as valid for | |
1521 | * '*typep' in the "other_config" column in the "QoS" table in | |
1522 | * vswitchd/vswitch.xml (which is built as ovs-vswitchd.conf.db(8)). */ | |
1523 | int | |
1524 | netdev_get_qos(const struct netdev *netdev, | |
79f1cbe9 | 1525 | const char **typep, struct smap *details) |
c1c9c9c4 | 1526 | { |
b5d57fc8 | 1527 | const struct netdev_class *class = netdev->netdev_class; |
c1c9c9c4 BP |
1528 | int retval; |
1529 | ||
1530 | if (class->get_qos) { | |
1531 | retval = class->get_qos(netdev, typep, details); | |
1532 | if (retval) { | |
1533 | *typep = NULL; | |
79f1cbe9 | 1534 | smap_clear(details); |
c1c9c9c4 BP |
1535 | } |
1536 | return retval; | |
1537 | } else { | |
1538 | /* 'netdev' doesn't support QoS, so report that QoS is disabled. */ | |
1539 | *typep = ""; | |
1540 | return 0; | |
1541 | } | |
1542 | } | |
1543 | ||
1544 | /* Attempts to reconfigure QoS on 'netdev', changing the form of QoS to 'type' | |
1545 | * with details of configuration from 'details'. Returns 0 if successful, | |
1546 | * otherwise a positive errno value. On error, the previous QoS configuration | |
1547 | * is retained. | |
1548 | * | |
1549 | * When this function changes the type of QoS (not just 'details'), this also | |
1550 | * resets all queue configuration for 'netdev' to their defaults (which depend | |
1551 | * on the specific type of QoS). Otherwise, the queue configuration for | |
1552 | * 'netdev' is unchanged. | |
1553 | * | |
1554 | * 'type' should be "" (to disable QoS) or one of the types returned by | |
1555 | * netdev_get_qos_types() for 'netdev'. The contents of 'details' should be | |
1556 | * documented as valid for the given 'type' in the "other_config" column in the | |
1557 | * "QoS" table in vswitchd/vswitch.xml (which is built as | |
1558 | * ovs-vswitchd.conf.db(8)). | |
1559 | * | |
1560 | * NULL may be specified for 'details' if there are no configuration | |
1561 | * details. */ | |
1562 | int | |
1563 | netdev_set_qos(struct netdev *netdev, | |
79f1cbe9 | 1564 | const char *type, const struct smap *details) |
c1c9c9c4 | 1565 | { |
b5d57fc8 | 1566 | const struct netdev_class *class = netdev->netdev_class; |
c1c9c9c4 BP |
1567 | |
1568 | if (!type) { | |
1569 | type = ""; | |
1570 | } | |
1571 | ||
1572 | if (class->set_qos) { | |
1573 | if (!details) { | |
edfbe9f7 | 1574 | static const struct smap empty = SMAP_INITIALIZER(&empty); |
c1c9c9c4 BP |
1575 | details = ∅ |
1576 | } | |
1577 | return class->set_qos(netdev, type, details); | |
1578 | } else { | |
1579 | return *type ? EOPNOTSUPP : 0; | |
1580 | } | |
1581 | } | |
1582 | ||
1583 | /* Queries 'netdev' for information about the queue numbered 'queue_id'. If | |
1584 | * successful, adds that information as string key-value pairs to 'details'. | |
1585 | * Returns 0 if successful, otherwise a positive errno value. | |
1586 | * | |
1587 | * 'queue_id' must be less than the number of queues supported by 'netdev' for | |
1588 | * the current form of QoS (e.g. as returned by netdev_get_n_queues(netdev)). | |
1589 | * | |
1590 | * The returned contents of 'details' should be documented as valid for the | |
1591 | * given 'type' in the "other_config" column in the "Queue" table in | |
1592 | * vswitchd/vswitch.xml (which is built as ovs-vswitchd.conf.db(8)). | |
1593 | * | |
79f1cbe9 EJ |
1594 | * The caller must initialize 'details' (e.g. with smap_init()) before calling |
1595 | * this function. The caller must free 'details' when it is no longer needed | |
1596 | * (e.g. with smap_destroy()). */ | |
c1c9c9c4 BP |
1597 | int |
1598 | netdev_get_queue(const struct netdev *netdev, | |
79f1cbe9 | 1599 | unsigned int queue_id, struct smap *details) |
c1c9c9c4 | 1600 | { |
b5d57fc8 | 1601 | const struct netdev_class *class = netdev->netdev_class; |
c1c9c9c4 BP |
1602 | int retval; |
1603 | ||
1604 | retval = (class->get_queue | |
1605 | ? class->get_queue(netdev, queue_id, details) | |
1606 | : EOPNOTSUPP); | |
1607 | if (retval) { | |
79f1cbe9 | 1608 | smap_clear(details); |
c1c9c9c4 BP |
1609 | } |
1610 | return retval; | |
1611 | } | |
1612 | ||
1613 | /* Configures the queue numbered 'queue_id' on 'netdev' with the key-value | |
1614 | * string pairs in 'details'. The contents of 'details' should be documented | |
1615 | * as valid for the given 'type' in the "other_config" column in the "Queue" | |
1616 | * table in vswitchd/vswitch.xml (which is built as ovs-vswitchd.conf.db(8)). | |
1617 | * Returns 0 if successful, otherwise a positive errno value. On failure, the | |
1618 | * given queue's configuration should be unmodified. | |
1619 | * | |
1620 | * 'queue_id' must be less than the number of queues supported by 'netdev' for | |
1621 | * the current form of QoS (e.g. as returned by netdev_get_n_queues(netdev)). | |
1622 | * | |
1623 | * This function does not modify 'details', and the caller retains ownership of | |
c1fdab01 | 1624 | * it. */ |
c1c9c9c4 BP |
1625 | int |
1626 | netdev_set_queue(struct netdev *netdev, | |
79f1cbe9 | 1627 | unsigned int queue_id, const struct smap *details) |
c1c9c9c4 | 1628 | { |
b5d57fc8 | 1629 | const struct netdev_class *class = netdev->netdev_class; |
c1c9c9c4 BP |
1630 | return (class->set_queue |
1631 | ? class->set_queue(netdev, queue_id, details) | |
1632 | : EOPNOTSUPP); | |
1633 | } | |
1634 | ||
1635 | /* Attempts to delete the queue numbered 'queue_id' from 'netdev'. Some kinds | |
1636 | * of QoS may have a fixed set of queues, in which case attempts to delete them | |
1637 | * will fail with EOPNOTSUPP. | |
1638 | * | |
1639 | * Returns 0 if successful, otherwise a positive errno value. On failure, the | |
1640 | * given queue will be unmodified. | |
1641 | * | |
1642 | * 'queue_id' must be less than the number of queues supported by 'netdev' for | |
1643 | * the current form of QoS (e.g. as returned by | |
1644 | * netdev_get_n_queues(netdev)). */ | |
1645 | int | |
1646 | netdev_delete_queue(struct netdev *netdev, unsigned int queue_id) | |
1647 | { | |
b5d57fc8 | 1648 | const struct netdev_class *class = netdev->netdev_class; |
c1c9c9c4 BP |
1649 | return (class->delete_queue |
1650 | ? class->delete_queue(netdev, queue_id) | |
1651 | : EOPNOTSUPP); | |
1652 | } | |
1653 | ||
1654 | /* Obtains statistics about 'queue_id' on 'netdev'. On success, returns 0 and | |
1655 | * fills 'stats' with the queue's statistics; individual members of 'stats' may | |
1656 | * be set to all-1-bits if the statistic is unavailable. On failure, returns a | |
6dc34a0d BP |
1657 | * positive errno value and fills 'stats' with values indicating unsupported |
1658 | * statistics. */ | |
c1c9c9c4 BP |
1659 | int |
1660 | netdev_get_queue_stats(const struct netdev *netdev, unsigned int queue_id, | |
1661 | struct netdev_queue_stats *stats) | |
1662 | { | |
b5d57fc8 | 1663 | const struct netdev_class *class = netdev->netdev_class; |
c1c9c9c4 BP |
1664 | int retval; |
1665 | ||
1666 | retval = (class->get_queue_stats | |
1667 | ? class->get_queue_stats(netdev, queue_id, stats) | |
1668 | : EOPNOTSUPP); | |
1669 | if (retval) { | |
6dc34a0d BP |
1670 | stats->tx_bytes = UINT64_MAX; |
1671 | stats->tx_packets = UINT64_MAX; | |
1672 | stats->tx_errors = UINT64_MAX; | |
1673 | stats->created = LLONG_MIN; | |
c1c9c9c4 BP |
1674 | } |
1675 | return retval; | |
1676 | } | |
1677 | ||
89454bf4 BP |
1678 | /* Initializes 'dump' to begin dumping the queues in a netdev. |
1679 | * | |
1680 | * This function provides no status indication. An error status for the entire | |
1681 | * dump operation is provided when it is completed by calling | |
1682 | * netdev_queue_dump_done(). | |
1683 | */ | |
1684 | void | |
1685 | netdev_queue_dump_start(struct netdev_queue_dump *dump, | |
1686 | const struct netdev *netdev) | |
1687 | { | |
1688 | dump->netdev = netdev_ref(netdev); | |
1689 | if (netdev->netdev_class->queue_dump_start) { | |
1690 | dump->error = netdev->netdev_class->queue_dump_start(netdev, | |
1691 | &dump->state); | |
1692 | } else { | |
1693 | dump->error = EOPNOTSUPP; | |
1694 | } | |
1695 | } | |
1696 | ||
1697 | /* Attempts to retrieve another queue from 'dump', which must have been | |
1698 | * initialized with netdev_queue_dump_start(). On success, stores a new queue | |
1699 | * ID into '*queue_id', fills 'details' with configuration details for the | |
1700 | * queue, and returns true. On failure, returns false. | |
c1c9c9c4 | 1701 | * |
89454bf4 BP |
1702 | * Queues are not necessarily dumped in increasing order of queue ID (or any |
1703 | * other predictable order). | |
c1c9c9c4 | 1704 | * |
89454bf4 BP |
1705 | * Failure might indicate an actual error or merely that the last queue has |
1706 | * been dumped. An error status for the entire dump operation is provided when | |
1707 | * it is completed by calling netdev_queue_dump_done(). | |
c1c9c9c4 | 1708 | * |
89454bf4 BP |
1709 | * The returned contents of 'details' should be documented as valid for the |
1710 | * given 'type' in the "other_config" column in the "Queue" table in | |
1711 | * vswitchd/vswitch.xml (which is built as ovs-vswitchd.conf.db(8)). | |
1712 | * | |
1713 | * The caller must initialize 'details' (e.g. with smap_init()) before calling | |
1714 | * this function. This function will clear and replace its contents. The | |
1715 | * caller must free 'details' when it is no longer needed (e.g. with | |
1716 | * smap_destroy()). */ | |
1717 | bool | |
1718 | netdev_queue_dump_next(struct netdev_queue_dump *dump, | |
1719 | unsigned int *queue_id, struct smap *details) | |
1720 | { | |
1721 | const struct netdev *netdev = dump->netdev; | |
1722 | ||
1723 | if (dump->error) { | |
1724 | return false; | |
1725 | } | |
1726 | ||
1727 | dump->error = netdev->netdev_class->queue_dump_next(netdev, dump->state, | |
1728 | queue_id, details); | |
1729 | ||
1730 | if (dump->error) { | |
1731 | netdev->netdev_class->queue_dump_done(netdev, dump->state); | |
1732 | return false; | |
1733 | } | |
1734 | return true; | |
1735 | } | |
1736 | ||
1737 | /* Completes queue table dump operation 'dump', which must have been | |
1738 | * initialized with netdev_queue_dump_start(). Returns 0 if the dump operation | |
1739 | * was error-free, otherwise a positive errno value describing the problem. */ | |
c1c9c9c4 | 1740 | int |
89454bf4 | 1741 | netdev_queue_dump_done(struct netdev_queue_dump *dump) |
c1c9c9c4 | 1742 | { |
89454bf4 BP |
1743 | const struct netdev *netdev = dump->netdev; |
1744 | if (!dump->error && netdev->netdev_class->queue_dump_done) { | |
1745 | dump->error = netdev->netdev_class->queue_dump_done(netdev, | |
1746 | dump->state); | |
1747 | } | |
1748 | netdev_close(dump->netdev); | |
1749 | return dump->error == EOF ? 0 : dump->error; | |
c1c9c9c4 BP |
1750 | } |
1751 | ||
1752 | /* Iterates over all of 'netdev''s queues, calling 'cb' with the queue's ID, | |
1753 | * its statistics, and the 'aux' specified by the caller. The order of | |
1754 | * iteration is unspecified, but (when successful) each queue is visited | |
1755 | * exactly once. | |
1756 | * | |
1757 | * Calling this function may be more efficient than calling | |
1758 | * netdev_get_queue_stats() for every queue. | |
1759 | * | |
1760 | * 'cb' must not modify or free the statistics passed in. | |
1761 | * | |
1762 | * Returns 0 if successful, otherwise a positive errno value. On error, some | |
1763 | * configured queues may not have been included in the iteration. */ | |
1764 | int | |
1765 | netdev_dump_queue_stats(const struct netdev *netdev, | |
1766 | netdev_dump_queue_stats_cb *cb, void *aux) | |
1767 | { | |
b5d57fc8 | 1768 | const struct netdev_class *class = netdev->netdev_class; |
c1c9c9c4 BP |
1769 | return (class->dump_queue_stats |
1770 | ? class->dump_queue_stats(netdev, cb, aux) | |
1771 | : EOPNOTSUPP); | |
1772 | } | |
1773 | ||
8b61709d | 1774 | \f |
b5d57fc8 | 1775 | /* Returns the class type of 'netdev'. |
a740f0de JG |
1776 | * |
1777 | * The caller must not free the returned value. */ | |
149f577a | 1778 | const char * |
b5d57fc8 | 1779 | netdev_get_type(const struct netdev *netdev) |
a740f0de | 1780 | { |
b5d57fc8 | 1781 | return netdev->netdev_class->type; |
a740f0de JG |
1782 | } |
1783 | ||
b5d57fc8 | 1784 | /* Returns the class associated with 'netdev'. */ |
15b3596a | 1785 | const struct netdev_class * |
b5d57fc8 | 1786 | netdev_get_class(const struct netdev *netdev) |
a740f0de | 1787 | { |
b5d57fc8 | 1788 | return netdev->netdev_class; |
a740f0de JG |
1789 | } |
1790 | ||
b5d57fc8 | 1791 | /* Returns the netdev with 'name' or NULL if there is none. |
46415c90 | 1792 | * |
991e5fae | 1793 | * The caller must free the returned netdev with netdev_close(). */ |
b5d57fc8 BP |
1794 | struct netdev * |
1795 | netdev_from_name(const char *name) | |
86383816 | 1796 | OVS_EXCLUDED(netdev_mutex) |
46415c90 | 1797 | { |
991e5fae BP |
1798 | struct netdev *netdev; |
1799 | ||
86383816 | 1800 | ovs_mutex_lock(&netdev_mutex); |
991e5fae BP |
1801 | netdev = shash_find_data(&netdev_shash, name); |
1802 | if (netdev) { | |
86383816 | 1803 | netdev->ref_cnt++; |
991e5fae | 1804 | } |
86383816 | 1805 | ovs_mutex_unlock(&netdev_mutex); |
991e5fae BP |
1806 | |
1807 | return netdev; | |
46415c90 JG |
1808 | } |
1809 | ||
7dab847a | 1810 | /* Fills 'device_list' with devices that match 'netdev_class'. |
46415c90 | 1811 | * |
2f980d74 BP |
1812 | * The caller is responsible for initializing and destroying 'device_list' and |
1813 | * must close each device on the list. */ | |
46415c90 | 1814 | void |
b5d57fc8 BP |
1815 | netdev_get_devices(const struct netdev_class *netdev_class, |
1816 | struct shash *device_list) | |
86383816 | 1817 | OVS_EXCLUDED(netdev_mutex) |
46415c90 JG |
1818 | { |
1819 | struct shash_node *node; | |
86383816 BP |
1820 | |
1821 | ovs_mutex_lock(&netdev_mutex); | |
b5d57fc8 BP |
1822 | SHASH_FOR_EACH (node, &netdev_shash) { |
1823 | struct netdev *dev = node->data; | |
46415c90 | 1824 | |
7dab847a | 1825 | if (dev->netdev_class == netdev_class) { |
2f980d74 | 1826 | dev->ref_cnt++; |
46415c90 JG |
1827 | shash_add(device_list, node->name, node->data); |
1828 | } | |
1829 | } | |
86383816 | 1830 | ovs_mutex_unlock(&netdev_mutex); |
46415c90 JG |
1831 | } |
1832 | ||
41ca1e0a AW |
1833 | /* Extracts pointers to all 'netdev-vports' into an array 'vports' |
1834 | * and returns it. Stores the size of the array into '*size'. | |
1835 | * | |
1836 | * The caller is responsible for freeing 'vports' and must close | |
1837 | * each 'netdev-vport' in the list. */ | |
1838 | struct netdev ** | |
1839 | netdev_get_vports(size_t *size) | |
1840 | OVS_EXCLUDED(netdev_mutex) | |
1841 | { | |
1842 | struct netdev **vports; | |
1843 | struct shash_node *node; | |
1844 | size_t n = 0; | |
1845 | ||
1846 | if (!size) { | |
1847 | return NULL; | |
1848 | } | |
1849 | ||
1850 | /* Explicitly allocates big enough chunk of memory. */ | |
41ca1e0a | 1851 | ovs_mutex_lock(&netdev_mutex); |
048318e0 | 1852 | vports = xmalloc(shash_count(&netdev_shash) * sizeof *vports); |
41ca1e0a AW |
1853 | SHASH_FOR_EACH (node, &netdev_shash) { |
1854 | struct netdev *dev = node->data; | |
1855 | ||
1856 | if (netdev_vport_is_vport_class(dev->netdev_class)) { | |
1857 | dev->ref_cnt++; | |
1858 | vports[n] = dev; | |
1859 | n++; | |
1860 | } | |
1861 | } | |
1862 | ovs_mutex_unlock(&netdev_mutex); | |
1863 | *size = n; | |
1864 | ||
1865 | return vports; | |
1866 | } | |
1867 | ||
0a740f48 EJ |
1868 | const char * |
1869 | netdev_get_type_from_name(const char *name) | |
1870 | { | |
33d80cf9 TLSC |
1871 | struct netdev *dev; |
1872 | const char *type; | |
1873 | type = netdev_vport_type_from_name(name); | |
1874 | if (type == NULL) { | |
1875 | dev = netdev_from_name(name); | |
1876 | type = dev ? netdev_get_type(dev) : NULL; | |
1877 | netdev_close(dev); | |
1878 | } | |
991e5fae | 1879 | return type; |
6c88d577 | 1880 | } |
e9e28be3 | 1881 | \f |
b5d57fc8 | 1882 | struct netdev * |
f7791740 | 1883 | netdev_rxq_get_netdev(const struct netdev_rxq *rx) |
796223f5 | 1884 | { |
b5d57fc8 BP |
1885 | ovs_assert(rx->netdev->ref_cnt > 0); |
1886 | return rx->netdev; | |
796223f5 BP |
1887 | } |
1888 | ||
1889 | const char * | |
f7791740 | 1890 | netdev_rxq_get_name(const struct netdev_rxq *rx) |
796223f5 | 1891 | { |
f7791740 | 1892 | return netdev_get_name(netdev_rxq_get_netdev(rx)); |
796223f5 BP |
1893 | } |
1894 | ||
ce179f11 IM |
1895 | int |
1896 | netdev_rxq_get_queue_id(const struct netdev_rxq *rx) | |
1897 | { | |
1898 | return rx->queue_id; | |
1899 | } | |
1900 | ||
064af421 | 1901 | static void |
4b609110 | 1902 | restore_all_flags(void *aux OVS_UNUSED) |
064af421 | 1903 | { |
4b609110 BP |
1904 | struct shash_node *node; |
1905 | ||
b5d57fc8 BP |
1906 | SHASH_FOR_EACH (node, &netdev_shash) { |
1907 | struct netdev *netdev = node->data; | |
4b609110 BP |
1908 | const struct netdev_saved_flags *sf; |
1909 | enum netdev_flags saved_values; | |
1910 | enum netdev_flags saved_flags; | |
1911 | ||
1912 | saved_values = saved_flags = 0; | |
b5d57fc8 | 1913 | LIST_FOR_EACH (sf, node, &netdev->saved_flags_list) { |
4b609110 BP |
1914 | saved_flags |= sf->saved_flags; |
1915 | saved_values &= ~sf->saved_flags; | |
1916 | saved_values |= sf->saved_flags & sf->saved_values; | |
1917 | } | |
1918 | if (saved_flags) { | |
1919 | enum netdev_flags old_flags; | |
1920 | ||
b5d57fc8 BP |
1921 | netdev->netdev_class->update_flags(netdev, |
1922 | saved_flags & saved_values, | |
1923 | saved_flags & ~saved_values, | |
1924 | &old_flags); | |
4b609110 | 1925 | } |
064af421 BP |
1926 | } |
1927 | } | |
3e912ffc AW |
1928 | |
1929 | uint64_t | |
1930 | netdev_get_change_seq(const struct netdev *netdev) | |
1931 | { | |
1932 | return netdev->change_seq; | |
1933 | } | |
a8704b50 PS |
1934 | |
1935 | #ifndef _WIN32 | |
1936 | /* This implementation is shared by Linux and BSD. */ | |
1937 | ||
1938 | static struct ifaddrs *if_addr_list; | |
1939 | static struct ovs_mutex if_addr_list_lock = OVS_MUTEX_INITIALIZER; | |
1940 | ||
1941 | void | |
1942 | netdev_get_addrs_list_flush(void) | |
1943 | { | |
1944 | ovs_mutex_lock(&if_addr_list_lock); | |
1945 | if (if_addr_list) { | |
1946 | freeifaddrs(if_addr_list); | |
1947 | if_addr_list = NULL; | |
1948 | } | |
1949 | ovs_mutex_unlock(&if_addr_list_lock); | |
1950 | } | |
1951 | ||
1952 | int | |
1953 | netdev_get_addrs(const char dev[], struct in6_addr **paddr, | |
1954 | struct in6_addr **pmask, int *n_in) | |
1955 | { | |
1956 | struct in6_addr *addr_array, *mask_array; | |
1957 | const struct ifaddrs *ifa; | |
1958 | int cnt = 0, i = 0; | |
1959 | ||
1960 | ovs_mutex_lock(&if_addr_list_lock); | |
1961 | if (!if_addr_list) { | |
1962 | int err; | |
1963 | ||
1964 | err = getifaddrs(&if_addr_list); | |
1965 | if (err) { | |
1966 | ovs_mutex_unlock(&if_addr_list_lock); | |
1967 | return -err; | |
1968 | } | |
1969 | } | |
1970 | ||
1971 | for (ifa = if_addr_list; ifa; ifa = ifa->ifa_next) { | |
0ac01021 | 1972 | if (ifa->ifa_addr && ifa->ifa_name && ifa->ifa_netmask) { |
3e6dc8b7 | 1973 | int family; |
a8704b50 | 1974 | |
3e6dc8b7 TLSC |
1975 | family = ifa->ifa_addr->sa_family; |
1976 | if (family == AF_INET || family == AF_INET6) { | |
1977 | if (!strncmp(ifa->ifa_name, dev, IFNAMSIZ)) { | |
1978 | cnt++; | |
1979 | } | |
a8704b50 PS |
1980 | } |
1981 | } | |
1982 | } | |
1983 | ||
1984 | if (!cnt) { | |
1985 | ovs_mutex_unlock(&if_addr_list_lock); | |
1986 | return EADDRNOTAVAIL; | |
1987 | } | |
1988 | addr_array = xzalloc(sizeof *addr_array * cnt); | |
1989 | mask_array = xzalloc(sizeof *mask_array * cnt); | |
1990 | for (ifa = if_addr_list; ifa; ifa = ifa->ifa_next) { | |
1991 | int family; | |
1992 | ||
f70ad934 HL |
1993 | if (!ifa->ifa_name || !ifa->ifa_addr || !ifa->ifa_netmask |
1994 | || strncmp(ifa->ifa_name, dev, IFNAMSIZ)) { | |
a8704b50 PS |
1995 | continue; |
1996 | } | |
1997 | ||
1998 | family = ifa->ifa_addr->sa_family; | |
1999 | if (family == AF_INET) { | |
2000 | const struct sockaddr_in *sin; | |
2001 | ||
2002 | sin = ALIGNED_CAST(const struct sockaddr_in *, ifa->ifa_addr); | |
2003 | in6_addr_set_mapped_ipv4(&addr_array[i], sin->sin_addr.s_addr); | |
32b3c533 | 2004 | sin = ALIGNED_CAST(const struct sockaddr_in *, ifa->ifa_netmask); |
a8704b50 PS |
2005 | in6_addr_set_mapped_ipv4(&mask_array[i], sin->sin_addr.s_addr); |
2006 | i++; | |
2007 | } else if (family == AF_INET6) { | |
2008 | const struct sockaddr_in6 *sin6; | |
2009 | ||
2010 | sin6 = ALIGNED_CAST(const struct sockaddr_in6 *, ifa->ifa_addr); | |
2011 | memcpy(&addr_array[i], &sin6->sin6_addr, sizeof *addr_array); | |
32b3c533 | 2012 | sin6 = ALIGNED_CAST(const struct sockaddr_in6 *, ifa->ifa_netmask); |
a8704b50 PS |
2013 | memcpy(&mask_array[i], &sin6->sin6_addr, sizeof *mask_array); |
2014 | i++; | |
2015 | } | |
2016 | } | |
2017 | ovs_mutex_unlock(&if_addr_list_lock); | |
2018 | if (paddr) { | |
2019 | *n_in = cnt; | |
2020 | *paddr = addr_array; | |
2021 | *pmask = mask_array; | |
2022 | } else { | |
2023 | free(addr_array); | |
2024 | free(mask_array); | |
2025 | } | |
2026 | return 0; | |
2027 | } | |
2028 | #endif | |
790fb3b7 DDP |
2029 | |
2030 | void | |
2031 | netdev_wait_reconf_required(struct netdev *netdev) | |
2032 | { | |
2033 | seq_wait(netdev->reconfigure_seq, netdev->last_reconfigure_seq); | |
2034 | } | |
2035 | ||
2036 | bool | |
2037 | netdev_is_reconf_required(struct netdev *netdev) | |
2038 | { | |
2039 | return seq_read(netdev->reconfigure_seq) != netdev->last_reconfigure_seq; | |
2040 | } | |
2041 | ||
2042 | /* Give a chance to 'netdev' to reconfigure some of its parameters. | |
2043 | * | |
2044 | * If a module uses netdev_send() and netdev_rxq_recv(), it must call this | |
2045 | * function when netdev_is_reconf_required() returns true. | |
2046 | * | |
2047 | * Return 0 if successful, otherwise a positive errno value. If the | |
2048 | * reconfiguration fails the netdev will not be able to send or receive | |
2049 | * packets. | |
2050 | * | |
2051 | * When this function is called, no call to netdev_rxq_recv() or netdev_send() | |
2052 | * must be issued. */ | |
2053 | int | |
2054 | netdev_reconfigure(struct netdev *netdev) | |
2055 | { | |
2056 | const struct netdev_class *class = netdev->netdev_class; | |
2057 | ||
2058 | netdev->last_reconfigure_seq = seq_read(netdev->reconfigure_seq); | |
2059 | ||
2060 | return (class->reconfigure | |
2061 | ? class->reconfigure(netdev) | |
2062 | : EOPNOTSUPP); | |
2063 | } | |
18ebd48c PB |
2064 | |
2065 | int | |
2066 | netdev_flow_flush(struct netdev *netdev) | |
2067 | { | |
2068 | const struct netdev_class *class = netdev->netdev_class; | |
2069 | ||
2070 | return (class->flow_flush | |
2071 | ? class->flow_flush(netdev) | |
2072 | : EOPNOTSUPP); | |
2073 | } | |
2074 | ||
2075 | int | |
2076 | netdev_flow_dump_create(struct netdev *netdev, struct netdev_flow_dump **dump) | |
2077 | { | |
2078 | const struct netdev_class *class = netdev->netdev_class; | |
2079 | ||
2080 | return (class->flow_dump_create | |
2081 | ? class->flow_dump_create(netdev, dump) | |
2082 | : EOPNOTSUPP); | |
2083 | } | |
2084 | ||
2085 | int | |
2086 | netdev_flow_dump_destroy(struct netdev_flow_dump *dump) | |
2087 | { | |
2088 | const struct netdev_class *class = dump->netdev->netdev_class; | |
2089 | ||
2090 | return (class->flow_dump_destroy | |
2091 | ? class->flow_dump_destroy(dump) | |
2092 | : EOPNOTSUPP); | |
2093 | } | |
2094 | ||
2095 | bool | |
2096 | netdev_flow_dump_next(struct netdev_flow_dump *dump, struct match *match, | |
2097 | struct nlattr **actions, struct dpif_flow_stats *stats, | |
2098 | ovs_u128 *ufid, struct ofpbuf *rbuffer, | |
2099 | struct ofpbuf *wbuffer) | |
2100 | { | |
2101 | const struct netdev_class *class = dump->netdev->netdev_class; | |
2102 | ||
2103 | return (class->flow_dump_next | |
2104 | ? class->flow_dump_next(dump, match, actions, stats, ufid, | |
2105 | rbuffer, wbuffer) | |
2106 | : false); | |
2107 | } | |
2108 | ||
2109 | int | |
2110 | netdev_flow_put(struct netdev *netdev, struct match *match, | |
2111 | struct nlattr *actions, size_t act_len, | |
2112 | const ovs_u128 *ufid, struct offload_info *info, | |
2113 | struct dpif_flow_stats *stats) | |
2114 | { | |
2115 | const struct netdev_class *class = netdev->netdev_class; | |
2116 | ||
2117 | return (class->flow_put | |
2118 | ? class->flow_put(netdev, match, actions, act_len, ufid, | |
2119 | info, stats) | |
2120 | : EOPNOTSUPP); | |
2121 | } | |
2122 | ||
2123 | int | |
2124 | netdev_flow_get(struct netdev *netdev, struct match *match, | |
2125 | struct nlattr **actions, const ovs_u128 *ufid, | |
2126 | struct dpif_flow_stats *stats, struct ofpbuf *buf) | |
2127 | { | |
2128 | const struct netdev_class *class = netdev->netdev_class; | |
2129 | ||
2130 | return (class->flow_get | |
2131 | ? class->flow_get(netdev, match, actions, ufid, stats, buf) | |
2132 | : EOPNOTSUPP); | |
2133 | } | |
2134 | ||
2135 | int | |
2136 | netdev_flow_del(struct netdev *netdev, const ovs_u128 *ufid, | |
2137 | struct dpif_flow_stats *stats) | |
2138 | { | |
2139 | const struct netdev_class *class = netdev->netdev_class; | |
2140 | ||
2141 | return (class->flow_del | |
2142 | ? class->flow_del(netdev, ufid, stats) | |
2143 | : EOPNOTSUPP); | |
2144 | } | |
2145 | ||
2146 | int | |
2147 | netdev_init_flow_api(struct netdev *netdev) | |
2148 | { | |
2149 | const struct netdev_class *class = netdev->netdev_class; | |
2150 | ||
53611f7b PB |
2151 | if (!netdev_is_flow_api_enabled()) { |
2152 | return EOPNOTSUPP; | |
2153 | } | |
2154 | ||
18ebd48c PB |
2155 | return (class->init_flow_api |
2156 | ? class->init_flow_api(netdev) | |
2157 | : EOPNOTSUPP); | |
2158 | } | |
53611f7b PB |
2159 | |
2160 | bool | |
2161 | netdev_is_flow_api_enabled(void) | |
2162 | { | |
2163 | return netdev_flow_api_enabled; | |
2164 | } | |
2165 | ||
32b77c31 PB |
2166 | /* Protects below port hashmaps. */ |
2167 | static struct ovs_mutex netdev_hmap_mutex = OVS_MUTEX_INITIALIZER; | |
2168 | ||
2169 | static struct hmap port_to_netdev OVS_GUARDED_BY(netdev_hmap_mutex) | |
2170 | = HMAP_INITIALIZER(&port_to_netdev); | |
2171 | static struct hmap ifindex_to_port OVS_GUARDED_BY(netdev_hmap_mutex) | |
2172 | = HMAP_INITIALIZER(&ifindex_to_port); | |
2173 | ||
2174 | struct port_to_netdev_data { | |
fa54741e BP |
2175 | struct hmap_node portno_node; /* By (dpif_class, dpif_port.port_no). */ |
2176 | struct hmap_node ifindex_node; /* By (dpif_class, ifindex). */ | |
32b77c31 PB |
2177 | struct netdev *netdev; |
2178 | struct dpif_port dpif_port; | |
dfaf79dd | 2179 | const struct dpif_class *dpif_class; |
32b77c31 | 2180 | int ifindex; |
32b77c31 PB |
2181 | }; |
2182 | ||
0d8efdc9 BP |
2183 | static uint32_t |
2184 | netdev_ports_hash(odp_port_t port, const struct dpif_class *dpif_class) | |
2185 | { | |
2186 | return hash_int(odp_to_u32(port), hash_pointer(dpif_class, 0)); | |
2187 | } | |
dfaf79dd | 2188 | |
32b77c31 | 2189 | static struct port_to_netdev_data * |
dfaf79dd | 2190 | netdev_ports_lookup(odp_port_t port_no, const struct dpif_class *dpif_class) |
32b77c31 PB |
2191 | OVS_REQUIRES(netdev_hmap_mutex) |
2192 | { | |
32b77c31 PB |
2193 | struct port_to_netdev_data *data; |
2194 | ||
fa54741e | 2195 | HMAP_FOR_EACH_WITH_HASH (data, portno_node, |
0d8efdc9 BP |
2196 | netdev_ports_hash(port_no, dpif_class), |
2197 | &port_to_netdev) { | |
2198 | if (data->dpif_class == dpif_class | |
2199 | && data->dpif_port.port_no == port_no) { | |
2200 | return data; | |
2201 | } | |
32b77c31 PB |
2202 | } |
2203 | return NULL; | |
2204 | } | |
2205 | ||
2206 | int | |
dfaf79dd | 2207 | netdev_ports_insert(struct netdev *netdev, const struct dpif_class *dpif_class, |
32b77c31 PB |
2208 | struct dpif_port *dpif_port) |
2209 | { | |
32b77c31 | 2210 | struct port_to_netdev_data *data; |
32b77c31 PB |
2211 | int ifindex = netdev_get_ifindex(netdev); |
2212 | ||
2213 | if (ifindex < 0) { | |
2214 | return ENODEV; | |
2215 | } | |
2216 | ||
32b77c31 | 2217 | ovs_mutex_lock(&netdev_hmap_mutex); |
dfaf79dd | 2218 | if (netdev_ports_lookup(dpif_port->port_no, dpif_class)) { |
32b77c31 PB |
2219 | ovs_mutex_unlock(&netdev_hmap_mutex); |
2220 | return EEXIST; | |
2221 | } | |
2222 | ||
d2a5f170 | 2223 | data = xzalloc(sizeof *data); |
32b77c31 | 2224 | data->netdev = netdev_ref(netdev); |
dfaf79dd | 2225 | data->dpif_class = dpif_class; |
32b77c31 | 2226 | dpif_port_clone(&data->dpif_port, dpif_port); |
fa54741e | 2227 | data->ifindex = ifindex; |
32b77c31 | 2228 | |
fa54741e | 2229 | hmap_insert(&port_to_netdev, &data->portno_node, |
0d8efdc9 | 2230 | netdev_ports_hash(dpif_port->port_no, dpif_class)); |
fa54741e | 2231 | hmap_insert(&ifindex_to_port, &data->ifindex_node, ifindex); |
32b77c31 PB |
2232 | ovs_mutex_unlock(&netdev_hmap_mutex); |
2233 | ||
2234 | netdev_init_flow_api(netdev); | |
2235 | ||
2236 | return 0; | |
2237 | } | |
2238 | ||
2239 | struct netdev * | |
dfaf79dd | 2240 | netdev_ports_get(odp_port_t port_no, const struct dpif_class *dpif_class) |
32b77c31 PB |
2241 | { |
2242 | struct port_to_netdev_data *data; | |
2243 | struct netdev *ret = NULL; | |
2244 | ||
2245 | ovs_mutex_lock(&netdev_hmap_mutex); | |
dfaf79dd | 2246 | data = netdev_ports_lookup(port_no, dpif_class); |
32b77c31 PB |
2247 | if (data) { |
2248 | ret = netdev_ref(data->netdev); | |
2249 | } | |
2250 | ovs_mutex_unlock(&netdev_hmap_mutex); | |
2251 | ||
2252 | return ret; | |
2253 | } | |
2254 | ||
2255 | int | |
dfaf79dd | 2256 | netdev_ports_remove(odp_port_t port_no, const struct dpif_class *dpif_class) |
32b77c31 PB |
2257 | { |
2258 | struct port_to_netdev_data *data; | |
2259 | int ret = ENOENT; | |
2260 | ||
2261 | ovs_mutex_lock(&netdev_hmap_mutex); | |
2262 | ||
dfaf79dd | 2263 | data = netdev_ports_lookup(port_no, dpif_class); |
32b77c31 PB |
2264 | if (data) { |
2265 | dpif_port_destroy(&data->dpif_port); | |
2266 | netdev_close(data->netdev); /* unref and possibly close */ | |
fa54741e BP |
2267 | hmap_remove(&port_to_netdev, &data->portno_node); |
2268 | hmap_remove(&ifindex_to_port, &data->ifindex_node); | |
32b77c31 PB |
2269 | free(data); |
2270 | ret = 0; | |
2271 | } | |
2272 | ||
2273 | ovs_mutex_unlock(&netdev_hmap_mutex); | |
2274 | ||
2275 | return ret; | |
2276 | } | |
2277 | ||
2278 | odp_port_t | |
2279 | netdev_ifindex_to_odp_port(int ifindex) | |
2280 | { | |
fa54741e | 2281 | struct port_to_netdev_data *data; |
32b77c31 PB |
2282 | odp_port_t ret = 0; |
2283 | ||
2284 | ovs_mutex_lock(&netdev_hmap_mutex); | |
fa54741e | 2285 | HMAP_FOR_EACH_WITH_HASH (data, ifindex_node, ifindex, &ifindex_to_port) { |
86395553 | 2286 | if (data->ifindex == ifindex) { |
fa54741e | 2287 | ret = data->dpif_port.port_no; |
86395553 BP |
2288 | break; |
2289 | } | |
32b77c31 PB |
2290 | } |
2291 | ovs_mutex_unlock(&netdev_hmap_mutex); | |
2292 | ||
2293 | return ret; | |
2294 | } | |
2295 | ||
f7dde6df | 2296 | void |
dfaf79dd | 2297 | netdev_ports_flow_flush(const struct dpif_class *dpif_class) |
f7dde6df PB |
2298 | { |
2299 | struct port_to_netdev_data *data; | |
2300 | ||
2301 | ovs_mutex_lock(&netdev_hmap_mutex); | |
fa54741e | 2302 | HMAP_FOR_EACH (data, portno_node, &port_to_netdev) { |
dfaf79dd | 2303 | if (data->dpif_class == dpif_class) { |
f7dde6df PB |
2304 | netdev_flow_flush(data->netdev); |
2305 | } | |
2306 | } | |
2307 | ovs_mutex_unlock(&netdev_hmap_mutex); | |
2308 | } | |
2309 | ||
f2280b41 | 2310 | struct netdev_flow_dump ** |
dfaf79dd | 2311 | netdev_ports_flow_dump_create(const struct dpif_class *dpif_class, int *ports) |
f2280b41 PB |
2312 | { |
2313 | struct port_to_netdev_data *data; | |
2314 | struct netdev_flow_dump **dumps; | |
2315 | int count = 0; | |
2316 | int i = 0; | |
2317 | ||
2318 | ovs_mutex_lock(&netdev_hmap_mutex); | |
fa54741e | 2319 | HMAP_FOR_EACH (data, portno_node, &port_to_netdev) { |
dfaf79dd | 2320 | if (data->dpif_class == dpif_class) { |
f2280b41 PB |
2321 | count++; |
2322 | } | |
2323 | } | |
2324 | ||
2325 | dumps = count ? xzalloc(sizeof *dumps * count) : NULL; | |
2326 | ||
fa54741e | 2327 | HMAP_FOR_EACH (data, portno_node, &port_to_netdev) { |
dfaf79dd | 2328 | if (data->dpif_class == dpif_class) { |
f2280b41 PB |
2329 | if (netdev_flow_dump_create(data->netdev, &dumps[i])) { |
2330 | continue; | |
2331 | } | |
2332 | ||
2333 | dumps[i]->port = data->dpif_port.port_no; | |
2334 | i++; | |
2335 | } | |
2336 | } | |
2337 | ovs_mutex_unlock(&netdev_hmap_mutex); | |
2338 | ||
2339 | *ports = i; | |
2340 | return dumps; | |
2341 | } | |
2342 | ||
0335a89c | 2343 | int |
dfaf79dd RD |
2344 | netdev_ports_flow_del(const struct dpif_class *dpif_class, |
2345 | const ovs_u128 *ufid, | |
0335a89c PB |
2346 | struct dpif_flow_stats *stats) |
2347 | { | |
2348 | struct port_to_netdev_data *data; | |
2349 | ||
2350 | ovs_mutex_lock(&netdev_hmap_mutex); | |
fa54741e | 2351 | HMAP_FOR_EACH (data, portno_node, &port_to_netdev) { |
dfaf79dd RD |
2352 | if (data->dpif_class == dpif_class |
2353 | && !netdev_flow_del(data->netdev, ufid, stats)) { | |
0335a89c PB |
2354 | ovs_mutex_unlock(&netdev_hmap_mutex); |
2355 | return 0; | |
2356 | } | |
2357 | } | |
2358 | ovs_mutex_unlock(&netdev_hmap_mutex); | |
2359 | ||
2360 | return ENOENT; | |
2361 | } | |
2362 | ||
6c343984 | 2363 | int |
dfaf79dd RD |
2364 | netdev_ports_flow_get(const struct dpif_class *dpif_class, struct match *match, |
2365 | struct nlattr **actions, const ovs_u128 *ufid, | |
2366 | struct dpif_flow_stats *stats, struct ofpbuf *buf) | |
6c343984 PB |
2367 | { |
2368 | struct port_to_netdev_data *data; | |
2369 | ||
2370 | ovs_mutex_lock(&netdev_hmap_mutex); | |
fa54741e | 2371 | HMAP_FOR_EACH (data, portno_node, &port_to_netdev) { |
dfaf79dd RD |
2372 | if (data->dpif_class == dpif_class |
2373 | && !netdev_flow_get(data->netdev, match, actions, | |
2374 | ufid, stats, buf)) { | |
6c343984 PB |
2375 | ovs_mutex_unlock(&netdev_hmap_mutex); |
2376 | return 0; | |
2377 | } | |
2378 | } | |
2379 | ovs_mutex_unlock(&netdev_hmap_mutex); | |
2380 | return ENOENT; | |
2381 | } | |
2382 | ||
53611f7b | 2383 | #ifdef __linux__ |
1067cf93 PB |
2384 | static void |
2385 | netdev_ports_flow_init(void) | |
2386 | { | |
2387 | struct port_to_netdev_data *data; | |
2388 | ||
2389 | ovs_mutex_lock(&netdev_hmap_mutex); | |
fa54741e | 2390 | HMAP_FOR_EACH (data, portno_node, &port_to_netdev) { |
1067cf93 PB |
2391 | netdev_init_flow_api(data->netdev); |
2392 | } | |
2393 | ovs_mutex_unlock(&netdev_hmap_mutex); | |
2394 | } | |
2395 | ||
53611f7b PB |
2396 | void |
2397 | netdev_set_flow_api_enabled(const struct smap *ovs_other_config) | |
2398 | { | |
2399 | if (smap_get_bool(ovs_other_config, "hw-offload", false)) { | |
2400 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
2401 | ||
2402 | if (ovsthread_once_start(&once)) { | |
2403 | netdev_flow_api_enabled = true; | |
2404 | ||
2405 | VLOG_INFO("netdev: Flow API Enabled"); | |
2406 | ||
691d20cb PB |
2407 | tc_set_policy(smap_get_def(ovs_other_config, "tc-policy", |
2408 | TC_POLICY_DEFAULT)); | |
2409 | ||
1067cf93 PB |
2410 | netdev_ports_flow_init(); |
2411 | ||
53611f7b PB |
2412 | ovsthread_once_done(&once); |
2413 | } | |
2414 | } | |
2415 | } | |
2416 | #else | |
2417 | void | |
2418 | netdev_set_flow_api_enabled(const struct smap *ovs_other_config OVS_UNUSED) | |
2419 | { | |
2420 | } | |
2421 | #endif |