2 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014 Nicira, Inc.
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:
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
22 #include <netinet/in.h>
29 #include "dynamic-string.h"
30 #include "fatal-signal.h"
33 #include "netdev-dpdk.h"
34 #include "netdev-provider.h"
35 #include "netdev-vport.h"
37 #include "openflow/openflow.h"
39 #include "poll-loop.h"
46 VLOG_DEFINE_THIS_MODULE(netdev);
48 COVERAGE_DEFINE(netdev_received);
49 COVERAGE_DEFINE(netdev_sent);
50 COVERAGE_DEFINE(netdev_add_router);
51 COVERAGE_DEFINE(netdev_get_stats);
53 struct netdev_saved_flags {
54 struct netdev *netdev;
55 struct list node; /* In struct netdev's saved_flags_list. */
56 enum netdev_flags saved_flags;
57 enum netdev_flags saved_values;
60 /* Protects 'netdev_shash' and the mutable members of struct netdev. */
61 static struct ovs_mutex netdev_mutex = OVS_MUTEX_INITIALIZER;
63 /* All created network devices. */
64 static struct shash netdev_shash OVS_GUARDED_BY(netdev_mutex)
65 = SHASH_INITIALIZER(&netdev_shash);
67 /* Protects 'netdev_classes' against insertions or deletions.
69 * This is a recursive mutex to allow recursive acquisition when calling into
70 * providers. For example, netdev_run() calls into provider 'run' functions,
71 * which might reasonably want to call one of the netdev functions that takes
72 * netdev_class_mutex. */
73 static struct ovs_mutex netdev_class_mutex OVS_ACQ_BEFORE(netdev_mutex);
75 /* Contains 'struct netdev_registered_class'es. */
76 static struct hmap netdev_classes OVS_GUARDED_BY(netdev_class_mutex)
77 = HMAP_INITIALIZER(&netdev_classes);
79 struct netdev_registered_class {
80 struct hmap_node hmap_node; /* In 'netdev_classes', by class->type. */
81 const struct netdev_class *class;
82 atomic_int ref_cnt; /* Number of 'struct netdev's of this class. */
85 /* This is set pretty low because we probably won't learn anything from the
86 * additional log messages. */
87 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20);
89 static void restore_all_flags(void *aux OVS_UNUSED);
90 void update_device_args(struct netdev *, const struct shash *args);
93 netdev_n_rxq(const struct netdev *netdev)
99 netdev_is_pmd(const struct netdev *netdev)
101 return !strcmp(netdev->netdev_class->type, "dpdk");
105 netdev_class_mutex_initialize(void)
106 OVS_EXCLUDED(netdev_class_mutex, netdev_mutex)
108 static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER;
110 if (ovsthread_once_start(&once)) {
111 ovs_mutex_init_recursive(&netdev_class_mutex);
112 ovsthread_once_done(&once);
117 netdev_initialize(void)
118 OVS_EXCLUDED(netdev_class_mutex, netdev_mutex)
120 static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER;
122 if (ovsthread_once_start(&once)) {
123 netdev_class_mutex_initialize();
125 fatal_signal_add_hook(restore_all_flags, NULL, NULL, true);
126 netdev_vport_patch_register();
129 netdev_register_provider(&netdev_linux_class);
130 netdev_register_provider(&netdev_internal_class);
131 netdev_register_provider(&netdev_tap_class);
132 netdev_vport_tunnel_register();
134 #if defined(__FreeBSD__) || defined(__NetBSD__)
135 netdev_register_provider(&netdev_tap_class);
136 netdev_register_provider(&netdev_bsd_class);
138 netdev_dpdk_register();
140 ovsthread_once_done(&once);
144 /* Performs periodic work needed by all the various kinds of netdevs.
146 * If your program opens any netdevs, it must call this function within its
150 OVS_EXCLUDED(netdev_class_mutex, netdev_mutex)
152 struct netdev_registered_class *rc;
155 ovs_mutex_lock(&netdev_class_mutex);
156 HMAP_FOR_EACH (rc, hmap_node, &netdev_classes) {
157 if (rc->class->run) {
161 ovs_mutex_unlock(&netdev_class_mutex);
164 /* Arranges for poll_block() to wake up when netdev_run() needs to be called.
166 * If your program opens any netdevs, it must call this function within its
170 OVS_EXCLUDED(netdev_class_mutex, netdev_mutex)
172 struct netdev_registered_class *rc;
174 ovs_mutex_lock(&netdev_class_mutex);
175 HMAP_FOR_EACH (rc, hmap_node, &netdev_classes) {
176 if (rc->class->wait) {
180 ovs_mutex_unlock(&netdev_class_mutex);
183 static struct netdev_registered_class *
184 netdev_lookup_class(const char *type)
185 OVS_REQ_RDLOCK(netdev_class_mutex)
187 struct netdev_registered_class *rc;
189 HMAP_FOR_EACH_WITH_HASH (rc, hmap_node, hash_string(type, 0),
191 if (!strcmp(type, rc->class->type)) {
198 /* Initializes and registers a new netdev provider. After successful
199 * registration, new netdevs of that type can be opened using netdev_open(). */
201 netdev_register_provider(const struct netdev_class *new_class)
202 OVS_EXCLUDED(netdev_class_mutex, netdev_mutex)
206 netdev_class_mutex_initialize();
207 ovs_mutex_lock(&netdev_class_mutex);
208 if (netdev_lookup_class(new_class->type)) {
209 VLOG_WARN("attempted to register duplicate netdev provider: %s",
213 error = new_class->init ? new_class->init() : 0;
215 struct netdev_registered_class *rc;
217 rc = xmalloc(sizeof *rc);
218 hmap_insert(&netdev_classes, &rc->hmap_node,
219 hash_string(new_class->type, 0));
220 rc->class = new_class;
221 atomic_init(&rc->ref_cnt, 0);
223 VLOG_ERR("failed to initialize %s network device class: %s",
224 new_class->type, ovs_strerror(error));
227 ovs_mutex_unlock(&netdev_class_mutex);
232 /* Unregisters a netdev provider. 'type' must have been previously
233 * registered and not currently be in use by any netdevs. After unregistration
234 * new netdevs of that type cannot be opened using netdev_open(). */
236 netdev_unregister_provider(const char *type)
237 OVS_EXCLUDED(netdev_class_mutex, netdev_mutex)
239 struct netdev_registered_class *rc;
242 ovs_mutex_lock(&netdev_class_mutex);
243 rc = netdev_lookup_class(type);
245 VLOG_WARN("attempted to unregister a netdev provider that is not "
246 "registered: %s", type);
247 error = EAFNOSUPPORT;
251 atomic_read(&rc->ref_cnt, &ref_cnt);
253 hmap_remove(&netdev_classes, &rc->hmap_node);
257 VLOG_WARN("attempted to unregister in use netdev provider: %s",
262 ovs_mutex_unlock(&netdev_class_mutex);
267 /* Clears 'types' and enumerates the types of all currently registered netdev
268 * providers into it. The caller must first initialize the sset. */
270 netdev_enumerate_types(struct sset *types)
271 OVS_EXCLUDED(netdev_mutex)
273 struct netdev_registered_class *rc;
278 ovs_mutex_lock(&netdev_class_mutex);
279 HMAP_FOR_EACH (rc, hmap_node, &netdev_classes) {
280 sset_add(types, rc->class->type);
282 ovs_mutex_unlock(&netdev_class_mutex);
285 /* Check that the network device name is not the same as any of the registered
286 * vport providers' dpif_port name (dpif_port is NULL if the vport provider
287 * does not define it) or the datapath internal port name (e.g. ovs-system).
289 * Returns true if there is a name conflict, false otherwise. */
291 netdev_is_reserved_name(const char *name)
292 OVS_EXCLUDED(netdev_mutex)
294 struct netdev_registered_class *rc;
298 ovs_mutex_lock(&netdev_class_mutex);
299 HMAP_FOR_EACH (rc, hmap_node, &netdev_classes) {
300 const char *dpif_port = netdev_vport_class_get_dpif_port(rc->class);
301 if (dpif_port && !strcmp(dpif_port, name)) {
302 ovs_mutex_unlock(&netdev_class_mutex);
306 ovs_mutex_unlock(&netdev_class_mutex);
308 if (!strncmp(name, "ovs-", 4)) {
313 dp_enumerate_types(&types);
314 SSET_FOR_EACH (type, &types) {
315 if (!strcmp(name+4, type)) {
316 sset_destroy(&types);
320 sset_destroy(&types);
326 /* Opens the network device named 'name' (e.g. "eth0") of the specified 'type'
327 * (e.g. "system") and returns zero if successful, otherwise a positive errno
328 * value. On success, sets '*netdevp' to the new network device, otherwise to
331 * Some network devices may need to be configured (with netdev_set_config())
332 * before they can be used. */
334 netdev_open(const char *name, const char *type, struct netdev **netdevp)
335 OVS_EXCLUDED(netdev_mutex)
337 struct netdev *netdev;
342 ovs_mutex_lock(&netdev_class_mutex);
343 ovs_mutex_lock(&netdev_mutex);
344 netdev = shash_find_data(&netdev_shash, name);
346 struct netdev_registered_class *rc;
348 rc = netdev_lookup_class(type && type[0] ? type : "system");
350 netdev = rc->class->alloc();
352 memset(netdev, 0, sizeof *netdev);
353 netdev->netdev_class = rc->class;
354 netdev->name = xstrdup(name);
355 netdev->change_seq = 1;
356 netdev->node = shash_add(&netdev_shash, name, netdev);
358 /* By default enable one rx queue per netdev. */
359 if (netdev->netdev_class->rxq_alloc) {
364 list_init(&netdev->saved_flags_list);
366 error = rc->class->construct(netdev);
370 atomic_add(&rc->ref_cnt, 1, &old_ref_cnt);
371 netdev_change_seq_changed(netdev);
374 ovs_assert(list_is_empty(&netdev->saved_flags_list));
375 shash_delete(&netdev_shash, netdev->node);
376 rc->class->dealloc(netdev);
382 VLOG_WARN("could not create netdev %s of unknown type %s",
384 error = EAFNOSUPPORT;
390 ovs_mutex_unlock(&netdev_mutex);
391 ovs_mutex_unlock(&netdev_class_mutex);
402 /* Returns a reference to 'netdev_' for the caller to own. Returns null if
403 * 'netdev_' is null. */
405 netdev_ref(const struct netdev *netdev_)
406 OVS_EXCLUDED(netdev_mutex)
408 struct netdev *netdev = CONST_CAST(struct netdev *, netdev_);
411 ovs_mutex_lock(&netdev_mutex);
412 ovs_assert(netdev->ref_cnt > 0);
414 ovs_mutex_unlock(&netdev_mutex);
419 /* Reconfigures the device 'netdev' with 'args'. 'args' may be empty
420 * or NULL if none are needed. */
422 netdev_set_config(struct netdev *netdev, const struct smap *args)
423 OVS_EXCLUDED(netdev_mutex)
425 if (netdev->netdev_class->set_config) {
426 const struct smap no_args = SMAP_INITIALIZER(&no_args);
429 error = netdev->netdev_class->set_config(netdev,
430 args ? args : &no_args);
432 VLOG_WARN("%s: could not set configuration (%s)",
433 netdev_get_name(netdev), ovs_strerror(error));
436 } else if (args && !smap_is_empty(args)) {
437 VLOG_WARN("%s: arguments provided to device that is not configurable",
438 netdev_get_name(netdev));
443 /* Returns the current configuration for 'netdev' in 'args'. The caller must
444 * have already initialized 'args' with smap_init(). Returns 0 on success, in
445 * which case 'args' will be filled with 'netdev''s configuration. On failure
446 * returns a positive errno value, in which case 'args' will be empty.
448 * The caller owns 'args' and its contents and must eventually free them with
451 netdev_get_config(const struct netdev *netdev, struct smap *args)
452 OVS_EXCLUDED(netdev_mutex)
457 if (netdev->netdev_class->get_config) {
458 error = netdev->netdev_class->get_config(netdev, args);
469 const struct netdev_tunnel_config *
470 netdev_get_tunnel_config(const struct netdev *netdev)
471 OVS_EXCLUDED(netdev_mutex)
473 if (netdev->netdev_class->get_tunnel_config) {
474 return netdev->netdev_class->get_tunnel_config(netdev);
481 netdev_unref(struct netdev *dev)
482 OVS_RELEASES(netdev_mutex)
484 ovs_assert(dev->ref_cnt);
485 if (!--dev->ref_cnt) {
486 const struct netdev_class *class = dev->netdev_class;
487 struct netdev_registered_class *rc;
490 dev->netdev_class->destruct(dev);
492 shash_delete(&netdev_shash, dev->node);
494 dev->netdev_class->dealloc(dev);
495 ovs_mutex_unlock(&netdev_mutex);
497 ovs_mutex_lock(&netdev_class_mutex);
498 rc = netdev_lookup_class(class->type);
499 atomic_sub(&rc->ref_cnt, 1, &old_ref_cnt);
500 ovs_assert(old_ref_cnt > 0);
501 ovs_mutex_unlock(&netdev_class_mutex);
503 ovs_mutex_unlock(&netdev_mutex);
507 /* Closes and destroys 'netdev'. */
509 netdev_close(struct netdev *netdev)
510 OVS_EXCLUDED(netdev_mutex)
513 ovs_mutex_lock(&netdev_mutex);
514 netdev_unref(netdev);
518 /* Parses 'netdev_name_', which is of the form [type@]name into its component
519 * pieces. 'name' and 'type' must be freed by the caller. */
521 netdev_parse_name(const char *netdev_name_, char **name, char **type)
523 char *netdev_name = xstrdup(netdev_name_);
526 separator = strchr(netdev_name, '@');
530 *name = xstrdup(separator + 1);
533 *type = xstrdup("system");
537 /* Attempts to open a netdev_rxq handle for obtaining packets received on
538 * 'netdev'. On success, returns 0 and stores a nonnull 'netdev_rxq *' into
539 * '*rxp'. On failure, returns a positive errno value and stores NULL into
542 * Some kinds of network devices might not support receiving packets. This
543 * function returns EOPNOTSUPP in that case.*/
545 netdev_rxq_open(struct netdev *netdev, struct netdev_rxq **rxp, int id)
546 OVS_EXCLUDED(netdev_mutex)
550 if (netdev->netdev_class->rxq_alloc && id < netdev->n_rxq) {
551 struct netdev_rxq *rx = netdev->netdev_class->rxq_alloc();
555 error = netdev->netdev_class->rxq_construct(rx);
557 ovs_mutex_lock(&netdev_mutex);
559 ovs_mutex_unlock(&netdev_mutex);
564 netdev->netdev_class->rxq_dealloc(rx);
578 netdev_rxq_close(struct netdev_rxq *rx)
579 OVS_EXCLUDED(netdev_mutex)
582 struct netdev *netdev = rx->netdev;
583 netdev->netdev_class->rxq_destruct(rx);
584 netdev->netdev_class->rxq_dealloc(rx);
585 netdev_close(netdev);
589 /* Attempts to receive batch of packets from 'rx'.
591 * Returns EAGAIN immediately if no packet is ready to be received.
593 * Returns EMSGSIZE, and discards the packet, if the received packet is longer
594 * than 'ofpbuf_tailroom(buffer)'.
596 * It is advised that the tailroom of 'buffer' should be
597 * VLAN_HEADER_LEN bytes longer than the MTU to allow space for an
598 * out-of-band VLAN header to be added to the packet. At the very least,
599 * 'buffer' must have at least ETH_TOTAL_MIN bytes of tailroom.
601 * This function may be set to null if it would always return EOPNOTSUPP
604 netdev_rxq_recv(struct netdev_rxq *rx, struct ofpbuf **buffers, int *cnt)
608 retval = rx->netdev->netdev_class->rxq_recv(rx, buffers, cnt);
610 COVERAGE_INC(netdev_received);
615 /* Arranges for poll_block() to wake up when a packet is ready to be received
618 netdev_rxq_wait(struct netdev_rxq *rx)
620 rx->netdev->netdev_class->rxq_wait(rx);
623 /* Discards any packets ready to be received on 'rx'. */
625 netdev_rxq_drain(struct netdev_rxq *rx)
627 return (rx->netdev->netdev_class->rxq_drain
628 ? rx->netdev->netdev_class->rxq_drain(rx)
632 /* Sends 'buffer' on 'netdev'. Returns 0 if successful, otherwise a positive
633 * errno value. Returns EAGAIN without blocking if the packet cannot be queued
634 * immediately. Returns EMSGSIZE if a partial packet was transmitted or if
635 * the packet is too big or too small to transmit on the device.
637 * To retain ownership of 'buffer' caller can set may_steal to false.
639 * The kernel maintains a packet transmission queue, so the caller is not
640 * expected to do additional queuing of packets.
642 * Some network devices may not implement support for this function. In such
643 * cases this function will always return EOPNOTSUPP. */
645 netdev_send(struct netdev *netdev, struct ofpbuf *buffer, bool may_steal)
649 error = (netdev->netdev_class->send
650 ? netdev->netdev_class->send(netdev, buffer, may_steal)
653 COVERAGE_INC(netdev_sent);
658 /* Registers with the poll loop to wake up from the next call to poll_block()
659 * when the packet transmission queue has sufficient room to transmit a packet
660 * with netdev_send().
662 * The kernel maintains a packet transmission queue, so the client is not
663 * expected to do additional queuing of packets. Thus, this function is
664 * unlikely to ever be used. It is included for completeness. */
666 netdev_send_wait(struct netdev *netdev)
668 if (netdev->netdev_class->send_wait) {
669 netdev->netdev_class->send_wait(netdev);
673 /* Attempts to set 'netdev''s MAC address to 'mac'. Returns 0 if successful,
674 * otherwise a positive errno value. */
676 netdev_set_etheraddr(struct netdev *netdev, const uint8_t mac[ETH_ADDR_LEN])
678 return netdev->netdev_class->set_etheraddr(netdev, mac);
681 /* Retrieves 'netdev''s MAC address. If successful, returns 0 and copies the
682 * the MAC address into 'mac'. On failure, returns a positive errno value and
683 * clears 'mac' to all-zeros. */
685 netdev_get_etheraddr(const struct netdev *netdev, uint8_t mac[ETH_ADDR_LEN])
687 return netdev->netdev_class->get_etheraddr(netdev, mac);
690 /* Returns the name of the network device that 'netdev' represents,
691 * e.g. "eth0". The caller must not modify or free the returned string. */
693 netdev_get_name(const struct netdev *netdev)
698 /* Retrieves the MTU of 'netdev'. The MTU is the maximum size of transmitted
699 * (and received) packets, in bytes, not including the hardware header; thus,
700 * this is typically 1500 bytes for Ethernet devices.
702 * If successful, returns 0 and stores the MTU size in '*mtup'. Returns
703 * EOPNOTSUPP if 'netdev' does not have an MTU (as e.g. some tunnels do not).
704 * On other failure, returns a positive errno value. On failure, sets '*mtup'
707 netdev_get_mtu(const struct netdev *netdev, int *mtup)
709 const struct netdev_class *class = netdev->netdev_class;
712 error = class->get_mtu ? class->get_mtu(netdev, mtup) : EOPNOTSUPP;
715 if (error != EOPNOTSUPP) {
716 VLOG_DBG_RL(&rl, "failed to retrieve MTU for network device %s: "
717 "%s", netdev_get_name(netdev), ovs_strerror(error));
723 /* Sets the MTU of 'netdev'. The MTU is the maximum size of transmitted
724 * (and received) packets, in bytes.
726 * If successful, returns 0. Returns EOPNOTSUPP if 'netdev' does not have an
727 * MTU (as e.g. some tunnels do not). On other failure, returns a positive
730 netdev_set_mtu(const struct netdev *netdev, int mtu)
732 const struct netdev_class *class = netdev->netdev_class;
735 error = class->set_mtu ? class->set_mtu(netdev, mtu) : EOPNOTSUPP;
736 if (error && error != EOPNOTSUPP) {
737 VLOG_DBG_RL(&rl, "failed to set MTU for network device %s: %s",
738 netdev_get_name(netdev), ovs_strerror(error));
744 /* Returns the ifindex of 'netdev', if successful, as a positive number. On
745 * failure, returns a negative errno value.
747 * The desired semantics of the ifindex value are a combination of those
748 * specified by POSIX for if_nametoindex() and by SNMP for ifIndex. An ifindex
749 * value should be unique within a host and remain stable at least until
750 * reboot. SNMP says an ifindex "ranges between 1 and the value of ifNumber"
751 * but many systems do not follow this rule anyhow.
753 * Some network devices may not implement support for this function. In such
754 * cases this function will always return -EOPNOTSUPP.
757 netdev_get_ifindex(const struct netdev *netdev)
759 int (*get_ifindex)(const struct netdev *);
761 get_ifindex = netdev->netdev_class->get_ifindex;
763 return get_ifindex ? get_ifindex(netdev) : -EOPNOTSUPP;
766 /* Stores the features supported by 'netdev' into each of '*current',
767 * '*advertised', '*supported', and '*peer' that are non-null. Each value is a
768 * bitmap of "enum ofp_port_features" bits, in host byte order. Returns 0 if
769 * successful, otherwise a positive errno value. On failure, all of the
770 * passed-in values are set to 0.
772 * Some network devices may not implement support for this function. In such
773 * cases this function will always return EOPNOTSUPP. */
775 netdev_get_features(const struct netdev *netdev,
776 enum netdev_features *current,
777 enum netdev_features *advertised,
778 enum netdev_features *supported,
779 enum netdev_features *peer)
781 int (*get_features)(const struct netdev *netdev,
782 enum netdev_features *current,
783 enum netdev_features *advertised,
784 enum netdev_features *supported,
785 enum netdev_features *peer);
786 enum netdev_features dummy[4];
793 advertised = &dummy[1];
796 supported = &dummy[2];
802 get_features = netdev->netdev_class->get_features;
804 ? get_features(netdev, current, advertised, supported,
808 *current = *advertised = *supported = *peer = 0;
813 /* Returns the maximum speed of a network connection that has the NETDEV_F_*
814 * bits in 'features', in bits per second. If no bits that indicate a speed
815 * are set in 'features', returns 'default_bps'. */
817 netdev_features_to_bps(enum netdev_features features,
818 uint64_t default_bps)
821 F_1000000MB = NETDEV_F_1TB_FD,
822 F_100000MB = NETDEV_F_100GB_FD,
823 F_40000MB = NETDEV_F_40GB_FD,
824 F_10000MB = NETDEV_F_10GB_FD,
825 F_1000MB = NETDEV_F_1GB_HD | NETDEV_F_1GB_FD,
826 F_100MB = NETDEV_F_100MB_HD | NETDEV_F_100MB_FD,
827 F_10MB = NETDEV_F_10MB_HD | NETDEV_F_10MB_FD
830 return ( features & F_1000000MB ? UINT64_C(1000000000000)
831 : features & F_100000MB ? UINT64_C(100000000000)
832 : features & F_40000MB ? UINT64_C(40000000000)
833 : features & F_10000MB ? UINT64_C(10000000000)
834 : features & F_1000MB ? UINT64_C(1000000000)
835 : features & F_100MB ? UINT64_C(100000000)
836 : features & F_10MB ? UINT64_C(10000000)
840 /* Returns true if any of the NETDEV_F_* bits that indicate a full-duplex link
841 * are set in 'features', otherwise false. */
843 netdev_features_is_full_duplex(enum netdev_features features)
845 return (features & (NETDEV_F_10MB_FD | NETDEV_F_100MB_FD | NETDEV_F_1GB_FD
846 | NETDEV_F_10GB_FD | NETDEV_F_40GB_FD
847 | NETDEV_F_100GB_FD | NETDEV_F_1TB_FD)) != 0;
850 /* Set the features advertised by 'netdev' to 'advertise'. Returns 0 if
851 * successful, otherwise a positive errno value. */
853 netdev_set_advertisements(struct netdev *netdev,
854 enum netdev_features advertise)
856 return (netdev->netdev_class->set_advertisements
857 ? netdev->netdev_class->set_advertisements(
862 /* If 'netdev' has an assigned IPv4 address, sets '*address' to that address
863 * and '*netmask' to its netmask and returns 0. Otherwise, returns a positive
864 * errno value and sets '*address' to 0 (INADDR_ANY).
866 * The following error values have well-defined meanings:
868 * - EADDRNOTAVAIL: 'netdev' has no assigned IPv4 address.
870 * - EOPNOTSUPP: No IPv4 network stack attached to 'netdev'.
872 * 'address' or 'netmask' or both may be null, in which case the address or
873 * netmask is not reported. */
875 netdev_get_in4(const struct netdev *netdev,
876 struct in_addr *address_, struct in_addr *netmask_)
878 struct in_addr address;
879 struct in_addr netmask;
882 error = (netdev->netdev_class->get_in4
883 ? netdev->netdev_class->get_in4(netdev,
887 address_->s_addr = error ? 0 : address.s_addr;
890 netmask_->s_addr = error ? 0 : netmask.s_addr;
895 /* Assigns 'addr' as 'netdev''s IPv4 address and 'mask' as its netmask. If
896 * 'addr' is INADDR_ANY, 'netdev''s IPv4 address is cleared. Returns a
897 * positive errno value. */
899 netdev_set_in4(struct netdev *netdev, struct in_addr addr, struct in_addr mask)
901 return (netdev->netdev_class->set_in4
902 ? netdev->netdev_class->set_in4(netdev, addr, mask)
906 /* Obtains ad IPv4 address from device name and save the address in
907 * in4. Returns 0 if successful, otherwise a positive errno value.
910 netdev_get_in4_by_name(const char *device_name, struct in_addr *in4)
912 struct netdev *netdev;
915 error = netdev_open(device_name, "system", &netdev);
917 in4->s_addr = htonl(0);
921 error = netdev_get_in4(netdev, in4, NULL);
922 netdev_close(netdev);
926 /* Adds 'router' as a default IP gateway for the TCP/IP stack that corresponds
929 netdev_add_router(struct netdev *netdev, struct in_addr router)
931 COVERAGE_INC(netdev_add_router);
932 return (netdev->netdev_class->add_router
933 ? netdev->netdev_class->add_router(netdev, router)
937 /* Looks up the next hop for 'host' for the TCP/IP stack that corresponds to
938 * 'netdev'. If a route cannot not be determined, sets '*next_hop' to 0,
939 * '*netdev_name' to null, and returns a positive errno value. Otherwise, if a
940 * next hop is found, stores the next hop gateway's address (0 if 'host' is on
941 * a directly connected network) in '*next_hop' and a copy of the name of the
942 * device to reach 'host' in '*netdev_name', and returns 0. The caller is
943 * responsible for freeing '*netdev_name' (by calling free()). */
945 netdev_get_next_hop(const struct netdev *netdev,
946 const struct in_addr *host, struct in_addr *next_hop,
949 int error = (netdev->netdev_class->get_next_hop
950 ? netdev->netdev_class->get_next_hop(
951 host, next_hop, netdev_name)
954 next_hop->s_addr = 0;
960 /* Populates 'smap' with status information.
962 * Populates 'smap' with 'netdev' specific status information. This
963 * information may be used to populate the status column of the Interface table
964 * as defined in ovs-vswitchd.conf.db(5). */
966 netdev_get_status(const struct netdev *netdev, struct smap *smap)
968 return (netdev->netdev_class->get_status
969 ? netdev->netdev_class->get_status(netdev, smap)
973 /* If 'netdev' has an assigned IPv6 address, sets '*in6' to that address and
974 * returns 0. Otherwise, returns a positive errno value and sets '*in6' to
975 * all-zero-bits (in6addr_any).
977 * The following error values have well-defined meanings:
979 * - EADDRNOTAVAIL: 'netdev' has no assigned IPv6 address.
981 * - EOPNOTSUPP: No IPv6 network stack attached to 'netdev'.
983 * 'in6' may be null, in which case the address itself is not reported. */
985 netdev_get_in6(const struct netdev *netdev, struct in6_addr *in6)
987 struct in6_addr dummy;
990 error = (netdev->netdev_class->get_in6
991 ? netdev->netdev_class->get_in6(netdev,
995 memset(in6, 0, sizeof *in6);
1000 /* On 'netdev', turns off the flags in 'off' and then turns on the flags in
1001 * 'on'. Returns 0 if successful, otherwise a positive errno value. */
1003 do_update_flags(struct netdev *netdev, enum netdev_flags off,
1004 enum netdev_flags on, enum netdev_flags *old_flagsp,
1005 struct netdev_saved_flags **sfp)
1006 OVS_EXCLUDED(netdev_mutex)
1008 struct netdev_saved_flags *sf = NULL;
1009 enum netdev_flags old_flags;
1012 error = netdev->netdev_class->update_flags(netdev, off & ~on, on,
1015 VLOG_WARN_RL(&rl, "failed to %s flags for network device %s: %s",
1016 off || on ? "set" : "get", netdev_get_name(netdev),
1017 ovs_strerror(error));
1019 } else if ((off || on) && sfp) {
1020 enum netdev_flags new_flags = (old_flags & ~off) | on;
1021 enum netdev_flags changed_flags = old_flags ^ new_flags;
1022 if (changed_flags) {
1023 ovs_mutex_lock(&netdev_mutex);
1024 *sfp = sf = xmalloc(sizeof *sf);
1025 sf->netdev = netdev;
1026 list_push_front(&netdev->saved_flags_list, &sf->node);
1027 sf->saved_flags = changed_flags;
1028 sf->saved_values = changed_flags & new_flags;
1031 ovs_mutex_unlock(&netdev_mutex);
1036 *old_flagsp = old_flags;
1045 /* Obtains the current flags for 'netdev' and stores them into '*flagsp'.
1046 * Returns 0 if successful, otherwise a positive errno value. On failure,
1047 * stores 0 into '*flagsp'. */
1049 netdev_get_flags(const struct netdev *netdev_, enum netdev_flags *flagsp)
1051 struct netdev *netdev = CONST_CAST(struct netdev *, netdev_);
1052 return do_update_flags(netdev, 0, 0, flagsp, NULL);
1055 /* Sets the flags for 'netdev' to 'flags'.
1056 * Returns 0 if successful, otherwise a positive errno value. */
1058 netdev_set_flags(struct netdev *netdev, enum netdev_flags flags,
1059 struct netdev_saved_flags **sfp)
1061 return do_update_flags(netdev, -1, flags, NULL, sfp);
1064 /* Turns on the specified 'flags' on 'netdev':
1066 * - On success, returns 0. If 'sfp' is nonnull, sets '*sfp' to a newly
1067 * allocated 'struct netdev_saved_flags *' that may be passed to
1068 * netdev_restore_flags() to restore the original values of 'flags' on
1069 * 'netdev' (this will happen automatically at program termination if
1070 * netdev_restore_flags() is never called) , or to NULL if no flags were
1073 * - On failure, returns a positive errno value. If 'sfp' is nonnull, sets
1074 * '*sfp' to NULL. */
1076 netdev_turn_flags_on(struct netdev *netdev, enum netdev_flags flags,
1077 struct netdev_saved_flags **sfp)
1079 return do_update_flags(netdev, 0, flags, NULL, sfp);
1082 /* Turns off the specified 'flags' on 'netdev'. See netdev_turn_flags_on() for
1083 * details of the interface. */
1085 netdev_turn_flags_off(struct netdev *netdev, enum netdev_flags flags,
1086 struct netdev_saved_flags **sfp)
1088 return do_update_flags(netdev, flags, 0, NULL, sfp);
1091 /* Restores the flags that were saved in 'sf', and destroys 'sf'.
1092 * Does nothing if 'sf' is NULL. */
1094 netdev_restore_flags(struct netdev_saved_flags *sf)
1095 OVS_EXCLUDED(netdev_mutex)
1098 struct netdev *netdev = sf->netdev;
1099 enum netdev_flags old_flags;
1101 netdev->netdev_class->update_flags(netdev,
1102 sf->saved_flags & sf->saved_values,
1103 sf->saved_flags & ~sf->saved_values,
1106 ovs_mutex_lock(&netdev_mutex);
1107 list_remove(&sf->node);
1109 netdev_unref(netdev);
1113 /* Looks up the ARP table entry for 'ip' on 'netdev'. If one exists and can be
1114 * successfully retrieved, it stores the corresponding MAC address in 'mac' and
1115 * returns 0. Otherwise, it returns a positive errno value; in particular,
1116 * ENXIO indicates that there is no ARP table entry for 'ip' on 'netdev'. */
1118 netdev_arp_lookup(const struct netdev *netdev,
1119 ovs_be32 ip, uint8_t mac[ETH_ADDR_LEN])
1121 int error = (netdev->netdev_class->arp_lookup
1122 ? netdev->netdev_class->arp_lookup(netdev, ip, mac)
1125 memset(mac, 0, ETH_ADDR_LEN);
1130 /* Returns true if carrier is active (link light is on) on 'netdev'. */
1132 netdev_get_carrier(const struct netdev *netdev)
1135 enum netdev_flags flags;
1138 netdev_get_flags(netdev, &flags);
1139 if (!(flags & NETDEV_UP)) {
1143 if (!netdev->netdev_class->get_carrier) {
1147 error = netdev->netdev_class->get_carrier(netdev, &carrier);
1149 VLOG_DBG("%s: failed to get network device carrier status, assuming "
1150 "down: %s", netdev_get_name(netdev), ovs_strerror(error));
1157 /* Returns the number of times 'netdev''s carrier has changed. */
1159 netdev_get_carrier_resets(const struct netdev *netdev)
1161 return (netdev->netdev_class->get_carrier_resets
1162 ? netdev->netdev_class->get_carrier_resets(netdev)
1166 /* Attempts to force netdev_get_carrier() to poll 'netdev''s MII registers for
1167 * link status instead of checking 'netdev''s carrier. 'netdev''s MII
1168 * registers will be polled once ever 'interval' milliseconds. If 'netdev'
1169 * does not support MII, another method may be used as a fallback. If
1170 * 'interval' is less than or equal to zero, reverts netdev_get_carrier() to
1171 * its normal behavior.
1173 * Returns 0 if successful, otherwise a positive errno value. */
1175 netdev_set_miimon_interval(struct netdev *netdev, long long int interval)
1177 return (netdev->netdev_class->set_miimon_interval
1178 ? netdev->netdev_class->set_miimon_interval(netdev, interval)
1182 /* Retrieves current device stats for 'netdev'. */
1184 netdev_get_stats(const struct netdev *netdev, struct netdev_stats *stats)
1188 COVERAGE_INC(netdev_get_stats);
1189 error = (netdev->netdev_class->get_stats
1190 ? netdev->netdev_class->get_stats(netdev, stats)
1193 memset(stats, 0xff, sizeof *stats);
1198 /* Attempts to change the stats for 'netdev' to those provided in 'stats'.
1199 * Returns 0 if successful, otherwise a positive errno value.
1201 * This will probably fail for most network devices. Some devices might only
1202 * allow setting their stats to 0. */
1204 netdev_set_stats(struct netdev *netdev, const struct netdev_stats *stats)
1206 return (netdev->netdev_class->set_stats
1207 ? netdev->netdev_class->set_stats(netdev, stats)
1211 /* Attempts to set input rate limiting (policing) policy, such that up to
1212 * 'kbits_rate' kbps of traffic is accepted, with a maximum accumulative burst
1213 * size of 'kbits' kb. */
1215 netdev_set_policing(struct netdev *netdev, uint32_t kbits_rate,
1216 uint32_t kbits_burst)
1218 return (netdev->netdev_class->set_policing
1219 ? netdev->netdev_class->set_policing(netdev,
1220 kbits_rate, kbits_burst)
1224 /* Adds to 'types' all of the forms of QoS supported by 'netdev', or leaves it
1225 * empty if 'netdev' does not support QoS. Any names added to 'types' should
1226 * be documented as valid for the "type" column in the "QoS" table in
1227 * vswitchd/vswitch.xml (which is built as ovs-vswitchd.conf.db(8)).
1229 * Every network device supports disabling QoS with a type of "", but this type
1230 * will not be added to 'types'.
1232 * The caller must initialize 'types' (e.g. with sset_init()) before calling
1233 * this function. The caller is responsible for destroying 'types' (e.g. with
1234 * sset_destroy()) when it is no longer needed.
1236 * Returns 0 if successful, otherwise a positive errno value. */
1238 netdev_get_qos_types(const struct netdev *netdev, struct sset *types)
1240 const struct netdev_class *class = netdev->netdev_class;
1241 return (class->get_qos_types
1242 ? class->get_qos_types(netdev, types)
1246 /* Queries 'netdev' for its capabilities regarding the specified 'type' of QoS,
1247 * which should be "" or one of the types returned by netdev_get_qos_types()
1248 * for 'netdev'. Returns 0 if successful, otherwise a positive errno value.
1249 * On success, initializes 'caps' with the QoS capabilities; on failure, clears
1250 * 'caps' to all zeros. */
1252 netdev_get_qos_capabilities(const struct netdev *netdev, const char *type,
1253 struct netdev_qos_capabilities *caps)
1255 const struct netdev_class *class = netdev->netdev_class;
1258 int retval = (class->get_qos_capabilities
1259 ? class->get_qos_capabilities(netdev, type, caps)
1262 memset(caps, 0, sizeof *caps);
1266 /* Every netdev supports turning off QoS. */
1267 memset(caps, 0, sizeof *caps);
1272 /* Obtains the number of queues supported by 'netdev' for the specified 'type'
1273 * of QoS. Returns 0 if successful, otherwise a positive errno value. Stores
1274 * the number of queues (zero on failure) in '*n_queuesp'.
1276 * This is just a simple wrapper around netdev_get_qos_capabilities(). */
1278 netdev_get_n_queues(const struct netdev *netdev,
1279 const char *type, unsigned int *n_queuesp)
1281 struct netdev_qos_capabilities caps;
1284 retval = netdev_get_qos_capabilities(netdev, type, &caps);
1285 *n_queuesp = caps.n_queues;
1289 /* Queries 'netdev' about its currently configured form of QoS. If successful,
1290 * stores the name of the current form of QoS into '*typep', stores any details
1291 * of configuration as string key-value pairs in 'details', and returns 0. On
1292 * failure, sets '*typep' to NULL and returns a positive errno value.
1294 * A '*typep' of "" indicates that QoS is currently disabled on 'netdev'.
1296 * The caller must initialize 'details' as an empty smap (e.g. with
1297 * smap_init()) before calling this function. The caller must free 'details'
1298 * when it is no longer needed (e.g. with smap_destroy()).
1300 * The caller must not modify or free '*typep'.
1302 * '*typep' will be one of the types returned by netdev_get_qos_types() for
1303 * 'netdev'. The contents of 'details' should be documented as valid for
1304 * '*typep' in the "other_config" column in the "QoS" table in
1305 * vswitchd/vswitch.xml (which is built as ovs-vswitchd.conf.db(8)). */
1307 netdev_get_qos(const struct netdev *netdev,
1308 const char **typep, struct smap *details)
1310 const struct netdev_class *class = netdev->netdev_class;
1313 if (class->get_qos) {
1314 retval = class->get_qos(netdev, typep, details);
1317 smap_clear(details);
1321 /* 'netdev' doesn't support QoS, so report that QoS is disabled. */
1327 /* Attempts to reconfigure QoS on 'netdev', changing the form of QoS to 'type'
1328 * with details of configuration from 'details'. Returns 0 if successful,
1329 * otherwise a positive errno value. On error, the previous QoS configuration
1332 * When this function changes the type of QoS (not just 'details'), this also
1333 * resets all queue configuration for 'netdev' to their defaults (which depend
1334 * on the specific type of QoS). Otherwise, the queue configuration for
1335 * 'netdev' is unchanged.
1337 * 'type' should be "" (to disable QoS) or one of the types returned by
1338 * netdev_get_qos_types() for 'netdev'. The contents of 'details' should be
1339 * documented as valid for the given 'type' in the "other_config" column in the
1340 * "QoS" table in vswitchd/vswitch.xml (which is built as
1341 * ovs-vswitchd.conf.db(8)).
1343 * NULL may be specified for 'details' if there are no configuration
1346 netdev_set_qos(struct netdev *netdev,
1347 const char *type, const struct smap *details)
1349 const struct netdev_class *class = netdev->netdev_class;
1355 if (class->set_qos) {
1357 static const struct smap empty = SMAP_INITIALIZER(&empty);
1360 return class->set_qos(netdev, type, details);
1362 return *type ? EOPNOTSUPP : 0;
1366 /* Queries 'netdev' for information about the queue numbered 'queue_id'. If
1367 * successful, adds that information as string key-value pairs to 'details'.
1368 * Returns 0 if successful, otherwise a positive errno value.
1370 * 'queue_id' must be less than the number of queues supported by 'netdev' for
1371 * the current form of QoS (e.g. as returned by netdev_get_n_queues(netdev)).
1373 * The returned contents of 'details' should be documented as valid for the
1374 * given 'type' in the "other_config" column in the "Queue" table in
1375 * vswitchd/vswitch.xml (which is built as ovs-vswitchd.conf.db(8)).
1377 * The caller must initialize 'details' (e.g. with smap_init()) before calling
1378 * this function. The caller must free 'details' when it is no longer needed
1379 * (e.g. with smap_destroy()). */
1381 netdev_get_queue(const struct netdev *netdev,
1382 unsigned int queue_id, struct smap *details)
1384 const struct netdev_class *class = netdev->netdev_class;
1387 retval = (class->get_queue
1388 ? class->get_queue(netdev, queue_id, details)
1391 smap_clear(details);
1396 /* Configures the queue numbered 'queue_id' on 'netdev' with the key-value
1397 * string pairs in 'details'. The contents of 'details' should be documented
1398 * as valid for the given 'type' in the "other_config" column in the "Queue"
1399 * table in vswitchd/vswitch.xml (which is built as ovs-vswitchd.conf.db(8)).
1400 * Returns 0 if successful, otherwise a positive errno value. On failure, the
1401 * given queue's configuration should be unmodified.
1403 * 'queue_id' must be less than the number of queues supported by 'netdev' for
1404 * the current form of QoS (e.g. as returned by netdev_get_n_queues(netdev)).
1406 * This function does not modify 'details', and the caller retains ownership of
1409 netdev_set_queue(struct netdev *netdev,
1410 unsigned int queue_id, const struct smap *details)
1412 const struct netdev_class *class = netdev->netdev_class;
1413 return (class->set_queue
1414 ? class->set_queue(netdev, queue_id, details)
1418 /* Attempts to delete the queue numbered 'queue_id' from 'netdev'. Some kinds
1419 * of QoS may have a fixed set of queues, in which case attempts to delete them
1420 * will fail with EOPNOTSUPP.
1422 * Returns 0 if successful, otherwise a positive errno value. On failure, the
1423 * given queue will be unmodified.
1425 * 'queue_id' must be less than the number of queues supported by 'netdev' for
1426 * the current form of QoS (e.g. as returned by
1427 * netdev_get_n_queues(netdev)). */
1429 netdev_delete_queue(struct netdev *netdev, unsigned int queue_id)
1431 const struct netdev_class *class = netdev->netdev_class;
1432 return (class->delete_queue
1433 ? class->delete_queue(netdev, queue_id)
1437 /* Obtains statistics about 'queue_id' on 'netdev'. On success, returns 0 and
1438 * fills 'stats' with the queue's statistics; individual members of 'stats' may
1439 * be set to all-1-bits if the statistic is unavailable. On failure, returns a
1440 * positive errno value and fills 'stats' with values indicating unsupported
1443 netdev_get_queue_stats(const struct netdev *netdev, unsigned int queue_id,
1444 struct netdev_queue_stats *stats)
1446 const struct netdev_class *class = netdev->netdev_class;
1449 retval = (class->get_queue_stats
1450 ? class->get_queue_stats(netdev, queue_id, stats)
1453 stats->tx_bytes = UINT64_MAX;
1454 stats->tx_packets = UINT64_MAX;
1455 stats->tx_errors = UINT64_MAX;
1456 stats->created = LLONG_MIN;
1461 /* Initializes 'dump' to begin dumping the queues in a netdev.
1463 * This function provides no status indication. An error status for the entire
1464 * dump operation is provided when it is completed by calling
1465 * netdev_queue_dump_done().
1468 netdev_queue_dump_start(struct netdev_queue_dump *dump,
1469 const struct netdev *netdev)
1471 dump->netdev = netdev_ref(netdev);
1472 if (netdev->netdev_class->queue_dump_start) {
1473 dump->error = netdev->netdev_class->queue_dump_start(netdev,
1476 dump->error = EOPNOTSUPP;
1480 /* Attempts to retrieve another queue from 'dump', which must have been
1481 * initialized with netdev_queue_dump_start(). On success, stores a new queue
1482 * ID into '*queue_id', fills 'details' with configuration details for the
1483 * queue, and returns true. On failure, returns false.
1485 * Queues are not necessarily dumped in increasing order of queue ID (or any
1486 * other predictable order).
1488 * Failure might indicate an actual error or merely that the last queue has
1489 * been dumped. An error status for the entire dump operation is provided when
1490 * it is completed by calling netdev_queue_dump_done().
1492 * The returned contents of 'details' should be documented as valid for the
1493 * given 'type' in the "other_config" column in the "Queue" table in
1494 * vswitchd/vswitch.xml (which is built as ovs-vswitchd.conf.db(8)).
1496 * The caller must initialize 'details' (e.g. with smap_init()) before calling
1497 * this function. This function will clear and replace its contents. The
1498 * caller must free 'details' when it is no longer needed (e.g. with
1499 * smap_destroy()). */
1501 netdev_queue_dump_next(struct netdev_queue_dump *dump,
1502 unsigned int *queue_id, struct smap *details)
1504 const struct netdev *netdev = dump->netdev;
1510 dump->error = netdev->netdev_class->queue_dump_next(netdev, dump->state,
1514 netdev->netdev_class->queue_dump_done(netdev, dump->state);
1520 /* Completes queue table dump operation 'dump', which must have been
1521 * initialized with netdev_queue_dump_start(). Returns 0 if the dump operation
1522 * was error-free, otherwise a positive errno value describing the problem. */
1524 netdev_queue_dump_done(struct netdev_queue_dump *dump)
1526 const struct netdev *netdev = dump->netdev;
1527 if (!dump->error && netdev->netdev_class->queue_dump_done) {
1528 dump->error = netdev->netdev_class->queue_dump_done(netdev,
1531 netdev_close(dump->netdev);
1532 return dump->error == EOF ? 0 : dump->error;
1535 /* Iterates over all of 'netdev''s queues, calling 'cb' with the queue's ID,
1536 * its statistics, and the 'aux' specified by the caller. The order of
1537 * iteration is unspecified, but (when successful) each queue is visited
1540 * Calling this function may be more efficient than calling
1541 * netdev_get_queue_stats() for every queue.
1543 * 'cb' must not modify or free the statistics passed in.
1545 * Returns 0 if successful, otherwise a positive errno value. On error, some
1546 * configured queues may not have been included in the iteration. */
1548 netdev_dump_queue_stats(const struct netdev *netdev,
1549 netdev_dump_queue_stats_cb *cb, void *aux)
1551 const struct netdev_class *class = netdev->netdev_class;
1552 return (class->dump_queue_stats
1553 ? class->dump_queue_stats(netdev, cb, aux)
1558 /* Returns the class type of 'netdev'.
1560 * The caller must not free the returned value. */
1562 netdev_get_type(const struct netdev *netdev)
1564 return netdev->netdev_class->type;
1567 /* Returns the class associated with 'netdev'. */
1568 const struct netdev_class *
1569 netdev_get_class(const struct netdev *netdev)
1571 return netdev->netdev_class;
1574 /* Returns the netdev with 'name' or NULL if there is none.
1576 * The caller must free the returned netdev with netdev_close(). */
1578 netdev_from_name(const char *name)
1579 OVS_EXCLUDED(netdev_mutex)
1581 struct netdev *netdev;
1583 ovs_mutex_lock(&netdev_mutex);
1584 netdev = shash_find_data(&netdev_shash, name);
1588 ovs_mutex_unlock(&netdev_mutex);
1593 /* Fills 'device_list' with devices that match 'netdev_class'.
1595 * The caller is responsible for initializing and destroying 'device_list' and
1596 * must close each device on the list. */
1598 netdev_get_devices(const struct netdev_class *netdev_class,
1599 struct shash *device_list)
1600 OVS_EXCLUDED(netdev_mutex)
1602 struct shash_node *node;
1604 ovs_mutex_lock(&netdev_mutex);
1605 SHASH_FOR_EACH (node, &netdev_shash) {
1606 struct netdev *dev = node->data;
1608 if (dev->netdev_class == netdev_class) {
1610 shash_add(device_list, node->name, node->data);
1613 ovs_mutex_unlock(&netdev_mutex);
1617 netdev_get_type_from_name(const char *name)
1619 struct netdev *dev = netdev_from_name(name);
1620 const char *type = dev ? netdev_get_type(dev) : NULL;
1626 netdev_rxq_get_netdev(const struct netdev_rxq *rx)
1628 ovs_assert(rx->netdev->ref_cnt > 0);
1633 netdev_rxq_get_name(const struct netdev_rxq *rx)
1635 return netdev_get_name(netdev_rxq_get_netdev(rx));
1639 restore_all_flags(void *aux OVS_UNUSED)
1641 struct shash_node *node;
1643 SHASH_FOR_EACH (node, &netdev_shash) {
1644 struct netdev *netdev = node->data;
1645 const struct netdev_saved_flags *sf;
1646 enum netdev_flags saved_values;
1647 enum netdev_flags saved_flags;
1649 saved_values = saved_flags = 0;
1650 LIST_FOR_EACH (sf, node, &netdev->saved_flags_list) {
1651 saved_flags |= sf->saved_flags;
1652 saved_values &= ~sf->saved_flags;
1653 saved_values |= sf->saved_flags & sf->saved_values;
1656 enum netdev_flags old_flags;
1658 netdev->netdev_class->update_flags(netdev,
1659 saved_flags & saved_values,
1660 saved_flags & ~saved_values,
1667 netdev_get_change_seq(const struct netdev *netdev)
1669 return netdev->change_seq;