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;
154 ovs_mutex_lock(&netdev_class_mutex);
155 HMAP_FOR_EACH (rc, hmap_node, &netdev_classes) {
156 if (rc->class->run) {
160 ovs_mutex_unlock(&netdev_class_mutex);
163 /* Arranges for poll_block() to wake up when netdev_run() needs to be called.
165 * If your program opens any netdevs, it must call this function within its
169 OVS_EXCLUDED(netdev_class_mutex, netdev_mutex)
171 struct netdev_registered_class *rc;
173 ovs_mutex_lock(&netdev_class_mutex);
174 HMAP_FOR_EACH (rc, hmap_node, &netdev_classes) {
175 if (rc->class->wait) {
179 ovs_mutex_unlock(&netdev_class_mutex);
182 static struct netdev_registered_class *
183 netdev_lookup_class(const char *type)
184 OVS_REQ_RDLOCK(netdev_class_mutex)
186 struct netdev_registered_class *rc;
188 HMAP_FOR_EACH_WITH_HASH (rc, hmap_node, hash_string(type, 0),
190 if (!strcmp(type, rc->class->type)) {
197 /* Initializes and registers a new netdev provider. After successful
198 * registration, new netdevs of that type can be opened using netdev_open(). */
200 netdev_register_provider(const struct netdev_class *new_class)
201 OVS_EXCLUDED(netdev_class_mutex, netdev_mutex)
205 netdev_class_mutex_initialize();
206 ovs_mutex_lock(&netdev_class_mutex);
207 if (netdev_lookup_class(new_class->type)) {
208 VLOG_WARN("attempted to register duplicate netdev provider: %s",
212 error = new_class->init ? new_class->init() : 0;
214 struct netdev_registered_class *rc;
216 rc = xmalloc(sizeof *rc);
217 hmap_insert(&netdev_classes, &rc->hmap_node,
218 hash_string(new_class->type, 0));
219 rc->class = new_class;
220 atomic_init(&rc->ref_cnt, 0);
222 VLOG_ERR("failed to initialize %s network device class: %s",
223 new_class->type, ovs_strerror(error));
226 ovs_mutex_unlock(&netdev_class_mutex);
231 /* Unregisters a netdev provider. 'type' must have been previously
232 * registered and not currently be in use by any netdevs. After unregistration
233 * new netdevs of that type cannot be opened using netdev_open(). */
235 netdev_unregister_provider(const char *type)
236 OVS_EXCLUDED(netdev_class_mutex, netdev_mutex)
238 struct netdev_registered_class *rc;
241 ovs_mutex_lock(&netdev_class_mutex);
242 rc = netdev_lookup_class(type);
244 VLOG_WARN("attempted to unregister a netdev provider that is not "
245 "registered: %s", type);
246 error = EAFNOSUPPORT;
250 atomic_read(&rc->ref_cnt, &ref_cnt);
252 hmap_remove(&netdev_classes, &rc->hmap_node);
256 VLOG_WARN("attempted to unregister in use netdev provider: %s",
261 ovs_mutex_unlock(&netdev_class_mutex);
266 /* Clears 'types' and enumerates the types of all currently registered netdev
267 * providers into it. The caller must first initialize the sset. */
269 netdev_enumerate_types(struct sset *types)
270 OVS_EXCLUDED(netdev_mutex)
272 struct netdev_registered_class *rc;
277 ovs_mutex_lock(&netdev_class_mutex);
278 HMAP_FOR_EACH (rc, hmap_node, &netdev_classes) {
279 sset_add(types, rc->class->type);
281 ovs_mutex_unlock(&netdev_class_mutex);
284 /* Check that the network device name is not the same as any of the registered
285 * vport providers' dpif_port name (dpif_port is NULL if the vport provider
286 * does not define it) or the datapath internal port name (e.g. ovs-system).
288 * Returns true if there is a name conflict, false otherwise. */
290 netdev_is_reserved_name(const char *name)
291 OVS_EXCLUDED(netdev_mutex)
293 struct netdev_registered_class *rc;
297 ovs_mutex_lock(&netdev_class_mutex);
298 HMAP_FOR_EACH (rc, hmap_node, &netdev_classes) {
299 const char *dpif_port = netdev_vport_class_get_dpif_port(rc->class);
300 if (dpif_port && !strcmp(dpif_port, name)) {
301 ovs_mutex_unlock(&netdev_class_mutex);
305 ovs_mutex_unlock(&netdev_class_mutex);
307 if (!strncmp(name, "ovs-", 4)) {
312 dp_enumerate_types(&types);
313 SSET_FOR_EACH (type, &types) {
314 if (!strcmp(name+4, type)) {
315 sset_destroy(&types);
319 sset_destroy(&types);
325 /* Opens the network device named 'name' (e.g. "eth0") of the specified 'type'
326 * (e.g. "system") and returns zero if successful, otherwise a positive errno
327 * value. On success, sets '*netdevp' to the new network device, otherwise to
330 * Some network devices may need to be configured (with netdev_set_config())
331 * before they can be used. */
333 netdev_open(const char *name, const char *type, struct netdev **netdevp)
334 OVS_EXCLUDED(netdev_mutex)
336 struct netdev *netdev;
341 ovs_mutex_lock(&netdev_class_mutex);
342 ovs_mutex_lock(&netdev_mutex);
343 netdev = shash_find_data(&netdev_shash, name);
345 struct netdev_registered_class *rc;
347 rc = netdev_lookup_class(type && type[0] ? type : "system");
349 netdev = rc->class->alloc();
351 memset(netdev, 0, sizeof *netdev);
352 netdev->netdev_class = rc->class;
353 netdev->name = xstrdup(name);
354 netdev->change_seq = 1;
355 netdev->node = shash_add(&netdev_shash, name, netdev);
357 /* By default enable one rx queue per netdev. */
358 if (netdev->netdev_class->rxq_alloc) {
363 list_init(&netdev->saved_flags_list);
365 error = rc->class->construct(netdev);
369 atomic_add(&rc->ref_cnt, 1, &old_ref_cnt);
370 netdev_change_seq_changed(netdev);
373 ovs_assert(list_is_empty(&netdev->saved_flags_list));
374 shash_delete(&netdev_shash, netdev->node);
375 rc->class->dealloc(netdev);
381 VLOG_WARN("could not create netdev %s of unknown type %s",
383 error = EAFNOSUPPORT;
389 ovs_mutex_unlock(&netdev_mutex);
390 ovs_mutex_unlock(&netdev_class_mutex);
401 /* Returns a reference to 'netdev_' for the caller to own. Returns null if
402 * 'netdev_' is null. */
404 netdev_ref(const struct netdev *netdev_)
405 OVS_EXCLUDED(netdev_mutex)
407 struct netdev *netdev = CONST_CAST(struct netdev *, netdev_);
410 ovs_mutex_lock(&netdev_mutex);
411 ovs_assert(netdev->ref_cnt > 0);
413 ovs_mutex_unlock(&netdev_mutex);
418 /* Reconfigures the device 'netdev' with 'args'. 'args' may be empty
419 * or NULL if none are needed. */
421 netdev_set_config(struct netdev *netdev, const struct smap *args)
422 OVS_EXCLUDED(netdev_mutex)
424 if (netdev->netdev_class->set_config) {
425 const struct smap no_args = SMAP_INITIALIZER(&no_args);
428 error = netdev->netdev_class->set_config(netdev,
429 args ? args : &no_args);
431 VLOG_WARN("%s: could not set configuration (%s)",
432 netdev_get_name(netdev), ovs_strerror(error));
435 } else if (args && !smap_is_empty(args)) {
436 VLOG_WARN("%s: arguments provided to device that is not configurable",
437 netdev_get_name(netdev));
442 /* Returns the current configuration for 'netdev' in 'args'. The caller must
443 * have already initialized 'args' with smap_init(). Returns 0 on success, in
444 * which case 'args' will be filled with 'netdev''s configuration. On failure
445 * returns a positive errno value, in which case 'args' will be empty.
447 * The caller owns 'args' and its contents and must eventually free them with
450 netdev_get_config(const struct netdev *netdev, struct smap *args)
451 OVS_EXCLUDED(netdev_mutex)
456 if (netdev->netdev_class->get_config) {
457 error = netdev->netdev_class->get_config(netdev, args);
468 const struct netdev_tunnel_config *
469 netdev_get_tunnel_config(const struct netdev *netdev)
470 OVS_EXCLUDED(netdev_mutex)
472 if (netdev->netdev_class->get_tunnel_config) {
473 return netdev->netdev_class->get_tunnel_config(netdev);
480 netdev_unref(struct netdev *dev)
481 OVS_RELEASES(netdev_mutex)
483 ovs_assert(dev->ref_cnt);
484 if (!--dev->ref_cnt) {
485 const struct netdev_class *class = dev->netdev_class;
486 struct netdev_registered_class *rc;
489 dev->netdev_class->destruct(dev);
491 shash_delete(&netdev_shash, dev->node);
493 dev->netdev_class->dealloc(dev);
494 ovs_mutex_unlock(&netdev_mutex);
496 ovs_mutex_lock(&netdev_class_mutex);
497 rc = netdev_lookup_class(class->type);
498 atomic_sub(&rc->ref_cnt, 1, &old_ref_cnt);
499 ovs_assert(old_ref_cnt > 0);
500 ovs_mutex_unlock(&netdev_class_mutex);
502 ovs_mutex_unlock(&netdev_mutex);
506 /* Closes and destroys 'netdev'. */
508 netdev_close(struct netdev *netdev)
509 OVS_EXCLUDED(netdev_mutex)
512 ovs_mutex_lock(&netdev_mutex);
513 netdev_unref(netdev);
517 /* Parses 'netdev_name_', which is of the form [type@]name into its component
518 * pieces. 'name' and 'type' must be freed by the caller. */
520 netdev_parse_name(const char *netdev_name_, char **name, char **type)
522 char *netdev_name = xstrdup(netdev_name_);
525 separator = strchr(netdev_name, '@');
529 *name = xstrdup(separator + 1);
532 *type = xstrdup("system");
536 /* Attempts to open a netdev_rxq handle for obtaining packets received on
537 * 'netdev'. On success, returns 0 and stores a nonnull 'netdev_rxq *' into
538 * '*rxp'. On failure, returns a positive errno value and stores NULL into
541 * Some kinds of network devices might not support receiving packets. This
542 * function returns EOPNOTSUPP in that case.*/
544 netdev_rxq_open(struct netdev *netdev, struct netdev_rxq **rxp, int id)
545 OVS_EXCLUDED(netdev_mutex)
549 if (netdev->netdev_class->rxq_alloc && id < netdev->n_rxq) {
550 struct netdev_rxq *rx = netdev->netdev_class->rxq_alloc();
554 error = netdev->netdev_class->rxq_construct(rx);
556 ovs_mutex_lock(&netdev_mutex);
558 ovs_mutex_unlock(&netdev_mutex);
563 netdev->netdev_class->rxq_dealloc(rx);
577 netdev_rxq_close(struct netdev_rxq *rx)
578 OVS_EXCLUDED(netdev_mutex)
581 struct netdev *netdev = rx->netdev;
582 netdev->netdev_class->rxq_destruct(rx);
583 netdev->netdev_class->rxq_dealloc(rx);
584 netdev_close(netdev);
588 /* Attempts to receive batch of packets from 'rx'.
590 * Returns EAGAIN immediately if no packet is ready to be received.
592 * Returns EMSGSIZE, and discards the packet, if the received packet is longer
593 * than 'ofpbuf_tailroom(buffer)'.
595 * It is advised that the tailroom of 'buffer' should be
596 * VLAN_HEADER_LEN bytes longer than the MTU to allow space for an
597 * out-of-band VLAN header to be added to the packet. At the very least,
598 * 'buffer' must have at least ETH_TOTAL_MIN bytes of tailroom.
600 * This function may be set to null if it would always return EOPNOTSUPP
603 netdev_rxq_recv(struct netdev_rxq *rx, struct ofpbuf **buffers, int *cnt)
607 retval = rx->netdev->netdev_class->rxq_recv(rx, buffers, cnt);
609 COVERAGE_INC(netdev_received);
614 /* Arranges for poll_block() to wake up when a packet is ready to be received
617 netdev_rxq_wait(struct netdev_rxq *rx)
619 rx->netdev->netdev_class->rxq_wait(rx);
622 /* Discards any packets ready to be received on 'rx'. */
624 netdev_rxq_drain(struct netdev_rxq *rx)
626 return (rx->netdev->netdev_class->rxq_drain
627 ? rx->netdev->netdev_class->rxq_drain(rx)
631 /* Sends 'buffer' on 'netdev'. Returns 0 if successful, otherwise a positive
632 * errno value. Returns EAGAIN without blocking if the packet cannot be queued
633 * immediately. Returns EMSGSIZE if a partial packet was transmitted or if
634 * the packet is too big or too small to transmit on the device.
636 * To retain ownership of 'buffer' caller can set may_steal to false.
638 * The kernel maintains a packet transmission queue, so the caller is not
639 * expected to do additional queuing of packets.
641 * Some network devices may not implement support for this function. In such
642 * cases this function will always return EOPNOTSUPP. */
644 netdev_send(struct netdev *netdev, struct ofpbuf *buffer, bool may_steal)
648 error = (netdev->netdev_class->send
649 ? netdev->netdev_class->send(netdev, buffer, may_steal)
652 COVERAGE_INC(netdev_sent);
657 /* Registers with the poll loop to wake up from the next call to poll_block()
658 * when the packet transmission queue has sufficient room to transmit a packet
659 * with netdev_send().
661 * The kernel maintains a packet transmission queue, so the client is not
662 * expected to do additional queuing of packets. Thus, this function is
663 * unlikely to ever be used. It is included for completeness. */
665 netdev_send_wait(struct netdev *netdev)
667 if (netdev->netdev_class->send_wait) {
668 netdev->netdev_class->send_wait(netdev);
672 /* Attempts to set 'netdev''s MAC address to 'mac'. Returns 0 if successful,
673 * otherwise a positive errno value. */
675 netdev_set_etheraddr(struct netdev *netdev, const uint8_t mac[ETH_ADDR_LEN])
677 return netdev->netdev_class->set_etheraddr(netdev, mac);
680 /* Retrieves 'netdev''s MAC address. If successful, returns 0 and copies the
681 * the MAC address into 'mac'. On failure, returns a positive errno value and
682 * clears 'mac' to all-zeros. */
684 netdev_get_etheraddr(const struct netdev *netdev, uint8_t mac[ETH_ADDR_LEN])
686 return netdev->netdev_class->get_etheraddr(netdev, mac);
689 /* Returns the name of the network device that 'netdev' represents,
690 * e.g. "eth0". The caller must not modify or free the returned string. */
692 netdev_get_name(const struct netdev *netdev)
697 /* Retrieves the MTU of 'netdev'. The MTU is the maximum size of transmitted
698 * (and received) packets, in bytes, not including the hardware header; thus,
699 * this is typically 1500 bytes for Ethernet devices.
701 * If successful, returns 0 and stores the MTU size in '*mtup'. Returns
702 * EOPNOTSUPP if 'netdev' does not have an MTU (as e.g. some tunnels do not).
703 * On other failure, returns a positive errno value. On failure, sets '*mtup'
706 netdev_get_mtu(const struct netdev *netdev, int *mtup)
708 const struct netdev_class *class = netdev->netdev_class;
711 error = class->get_mtu ? class->get_mtu(netdev, mtup) : EOPNOTSUPP;
714 if (error != EOPNOTSUPP) {
715 VLOG_DBG_RL(&rl, "failed to retrieve MTU for network device %s: "
716 "%s", netdev_get_name(netdev), ovs_strerror(error));
722 /* Sets the MTU of 'netdev'. The MTU is the maximum size of transmitted
723 * (and received) packets, in bytes.
725 * If successful, returns 0. Returns EOPNOTSUPP if 'netdev' does not have an
726 * MTU (as e.g. some tunnels do not). On other failure, returns a positive
729 netdev_set_mtu(const struct netdev *netdev, int mtu)
731 const struct netdev_class *class = netdev->netdev_class;
734 error = class->set_mtu ? class->set_mtu(netdev, mtu) : EOPNOTSUPP;
735 if (error && error != EOPNOTSUPP) {
736 VLOG_DBG_RL(&rl, "failed to set MTU for network device %s: %s",
737 netdev_get_name(netdev), ovs_strerror(error));
743 /* Returns the ifindex of 'netdev', if successful, as a positive number. On
744 * failure, returns a negative errno value.
746 * The desired semantics of the ifindex value are a combination of those
747 * specified by POSIX for if_nametoindex() and by SNMP for ifIndex. An ifindex
748 * value should be unique within a host and remain stable at least until
749 * reboot. SNMP says an ifindex "ranges between 1 and the value of ifNumber"
750 * but many systems do not follow this rule anyhow.
752 * Some network devices may not implement support for this function. In such
753 * cases this function will always return -EOPNOTSUPP.
756 netdev_get_ifindex(const struct netdev *netdev)
758 int (*get_ifindex)(const struct netdev *);
760 get_ifindex = netdev->netdev_class->get_ifindex;
762 return get_ifindex ? get_ifindex(netdev) : -EOPNOTSUPP;
765 /* Stores the features supported by 'netdev' into each of '*current',
766 * '*advertised', '*supported', and '*peer' that are non-null. Each value is a
767 * bitmap of "enum ofp_port_features" bits, in host byte order. Returns 0 if
768 * successful, otherwise a positive errno value. On failure, all of the
769 * passed-in values are set to 0.
771 * Some network devices may not implement support for this function. In such
772 * cases this function will always return EOPNOTSUPP. */
774 netdev_get_features(const struct netdev *netdev,
775 enum netdev_features *current,
776 enum netdev_features *advertised,
777 enum netdev_features *supported,
778 enum netdev_features *peer)
780 int (*get_features)(const struct netdev *netdev,
781 enum netdev_features *current,
782 enum netdev_features *advertised,
783 enum netdev_features *supported,
784 enum netdev_features *peer);
785 enum netdev_features dummy[4];
792 advertised = &dummy[1];
795 supported = &dummy[2];
801 get_features = netdev->netdev_class->get_features;
803 ? get_features(netdev, current, advertised, supported,
807 *current = *advertised = *supported = *peer = 0;
812 /* Returns the maximum speed of a network connection that has the NETDEV_F_*
813 * bits in 'features', in bits per second. If no bits that indicate a speed
814 * are set in 'features', returns 'default_bps'. */
816 netdev_features_to_bps(enum netdev_features features,
817 uint64_t default_bps)
820 F_1000000MB = NETDEV_F_1TB_FD,
821 F_100000MB = NETDEV_F_100GB_FD,
822 F_40000MB = NETDEV_F_40GB_FD,
823 F_10000MB = NETDEV_F_10GB_FD,
824 F_1000MB = NETDEV_F_1GB_HD | NETDEV_F_1GB_FD,
825 F_100MB = NETDEV_F_100MB_HD | NETDEV_F_100MB_FD,
826 F_10MB = NETDEV_F_10MB_HD | NETDEV_F_10MB_FD
829 return ( features & F_1000000MB ? UINT64_C(1000000000000)
830 : features & F_100000MB ? UINT64_C(100000000000)
831 : features & F_40000MB ? UINT64_C(40000000000)
832 : features & F_10000MB ? UINT64_C(10000000000)
833 : features & F_1000MB ? UINT64_C(1000000000)
834 : features & F_100MB ? UINT64_C(100000000)
835 : features & F_10MB ? UINT64_C(10000000)
839 /* Returns true if any of the NETDEV_F_* bits that indicate a full-duplex link
840 * are set in 'features', otherwise false. */
842 netdev_features_is_full_duplex(enum netdev_features features)
844 return (features & (NETDEV_F_10MB_FD | NETDEV_F_100MB_FD | NETDEV_F_1GB_FD
845 | NETDEV_F_10GB_FD | NETDEV_F_40GB_FD
846 | NETDEV_F_100GB_FD | NETDEV_F_1TB_FD)) != 0;
849 /* Set the features advertised by 'netdev' to 'advertise'. Returns 0 if
850 * successful, otherwise a positive errno value. */
852 netdev_set_advertisements(struct netdev *netdev,
853 enum netdev_features advertise)
855 return (netdev->netdev_class->set_advertisements
856 ? netdev->netdev_class->set_advertisements(
861 /* If 'netdev' has an assigned IPv4 address, sets '*address' to that address
862 * and '*netmask' to its netmask and returns 0. Otherwise, returns a positive
863 * errno value and sets '*address' to 0 (INADDR_ANY).
865 * The following error values have well-defined meanings:
867 * - EADDRNOTAVAIL: 'netdev' has no assigned IPv4 address.
869 * - EOPNOTSUPP: No IPv4 network stack attached to 'netdev'.
871 * 'address' or 'netmask' or both may be null, in which case the address or
872 * netmask is not reported. */
874 netdev_get_in4(const struct netdev *netdev,
875 struct in_addr *address_, struct in_addr *netmask_)
877 struct in_addr address;
878 struct in_addr netmask;
881 error = (netdev->netdev_class->get_in4
882 ? netdev->netdev_class->get_in4(netdev,
886 address_->s_addr = error ? 0 : address.s_addr;
889 netmask_->s_addr = error ? 0 : netmask.s_addr;
894 /* Assigns 'addr' as 'netdev''s IPv4 address and 'mask' as its netmask. If
895 * 'addr' is INADDR_ANY, 'netdev''s IPv4 address is cleared. Returns a
896 * positive errno value. */
898 netdev_set_in4(struct netdev *netdev, struct in_addr addr, struct in_addr mask)
900 return (netdev->netdev_class->set_in4
901 ? netdev->netdev_class->set_in4(netdev, addr, mask)
905 /* Obtains ad IPv4 address from device name and save the address in
906 * in4. Returns 0 if successful, otherwise a positive errno value.
909 netdev_get_in4_by_name(const char *device_name, struct in_addr *in4)
911 struct netdev *netdev;
914 error = netdev_open(device_name, "system", &netdev);
916 in4->s_addr = htonl(0);
920 error = netdev_get_in4(netdev, in4, NULL);
921 netdev_close(netdev);
925 /* Adds 'router' as a default IP gateway for the TCP/IP stack that corresponds
928 netdev_add_router(struct netdev *netdev, struct in_addr router)
930 COVERAGE_INC(netdev_add_router);
931 return (netdev->netdev_class->add_router
932 ? netdev->netdev_class->add_router(netdev, router)
936 /* Looks up the next hop for 'host' for the TCP/IP stack that corresponds to
937 * 'netdev'. If a route cannot not be determined, sets '*next_hop' to 0,
938 * '*netdev_name' to null, and returns a positive errno value. Otherwise, if a
939 * next hop is found, stores the next hop gateway's address (0 if 'host' is on
940 * a directly connected network) in '*next_hop' and a copy of the name of the
941 * device to reach 'host' in '*netdev_name', and returns 0. The caller is
942 * responsible for freeing '*netdev_name' (by calling free()). */
944 netdev_get_next_hop(const struct netdev *netdev,
945 const struct in_addr *host, struct in_addr *next_hop,
948 int error = (netdev->netdev_class->get_next_hop
949 ? netdev->netdev_class->get_next_hop(
950 host, next_hop, netdev_name)
953 next_hop->s_addr = 0;
959 /* Populates 'smap' with status information.
961 * Populates 'smap' with 'netdev' specific status information. This
962 * information may be used to populate the status column of the Interface table
963 * as defined in ovs-vswitchd.conf.db(5). */
965 netdev_get_status(const struct netdev *netdev, struct smap *smap)
967 return (netdev->netdev_class->get_status
968 ? netdev->netdev_class->get_status(netdev, smap)
972 /* If 'netdev' has an assigned IPv6 address, sets '*in6' to that address and
973 * returns 0. Otherwise, returns a positive errno value and sets '*in6' to
974 * all-zero-bits (in6addr_any).
976 * The following error values have well-defined meanings:
978 * - EADDRNOTAVAIL: 'netdev' has no assigned IPv6 address.
980 * - EOPNOTSUPP: No IPv6 network stack attached to 'netdev'.
982 * 'in6' may be null, in which case the address itself is not reported. */
984 netdev_get_in6(const struct netdev *netdev, struct in6_addr *in6)
986 struct in6_addr dummy;
989 error = (netdev->netdev_class->get_in6
990 ? netdev->netdev_class->get_in6(netdev,
994 memset(in6, 0, sizeof *in6);
999 /* On 'netdev', turns off the flags in 'off' and then turns on the flags in
1000 * 'on'. Returns 0 if successful, otherwise a positive errno value. */
1002 do_update_flags(struct netdev *netdev, enum netdev_flags off,
1003 enum netdev_flags on, enum netdev_flags *old_flagsp,
1004 struct netdev_saved_flags **sfp)
1005 OVS_EXCLUDED(netdev_mutex)
1007 struct netdev_saved_flags *sf = NULL;
1008 enum netdev_flags old_flags;
1011 error = netdev->netdev_class->update_flags(netdev, off & ~on, on,
1014 VLOG_WARN_RL(&rl, "failed to %s flags for network device %s: %s",
1015 off || on ? "set" : "get", netdev_get_name(netdev),
1016 ovs_strerror(error));
1018 } else if ((off || on) && sfp) {
1019 enum netdev_flags new_flags = (old_flags & ~off) | on;
1020 enum netdev_flags changed_flags = old_flags ^ new_flags;
1021 if (changed_flags) {
1022 ovs_mutex_lock(&netdev_mutex);
1023 *sfp = sf = xmalloc(sizeof *sf);
1024 sf->netdev = netdev;
1025 list_push_front(&netdev->saved_flags_list, &sf->node);
1026 sf->saved_flags = changed_flags;
1027 sf->saved_values = changed_flags & new_flags;
1030 ovs_mutex_unlock(&netdev_mutex);
1035 *old_flagsp = old_flags;
1044 /* Obtains the current flags for 'netdev' and stores them into '*flagsp'.
1045 * Returns 0 if successful, otherwise a positive errno value. On failure,
1046 * stores 0 into '*flagsp'. */
1048 netdev_get_flags(const struct netdev *netdev_, enum netdev_flags *flagsp)
1050 struct netdev *netdev = CONST_CAST(struct netdev *, netdev_);
1051 return do_update_flags(netdev, 0, 0, flagsp, NULL);
1054 /* Sets the flags for 'netdev' to 'flags'.
1055 * Returns 0 if successful, otherwise a positive errno value. */
1057 netdev_set_flags(struct netdev *netdev, enum netdev_flags flags,
1058 struct netdev_saved_flags **sfp)
1060 return do_update_flags(netdev, -1, flags, NULL, sfp);
1063 /* Turns on the specified 'flags' on 'netdev':
1065 * - On success, returns 0. If 'sfp' is nonnull, sets '*sfp' to a newly
1066 * allocated 'struct netdev_saved_flags *' that may be passed to
1067 * netdev_restore_flags() to restore the original values of 'flags' on
1068 * 'netdev' (this will happen automatically at program termination if
1069 * netdev_restore_flags() is never called) , or to NULL if no flags were
1072 * - On failure, returns a positive errno value. If 'sfp' is nonnull, sets
1073 * '*sfp' to NULL. */
1075 netdev_turn_flags_on(struct netdev *netdev, enum netdev_flags flags,
1076 struct netdev_saved_flags **sfp)
1078 return do_update_flags(netdev, 0, flags, NULL, sfp);
1081 /* Turns off the specified 'flags' on 'netdev'. See netdev_turn_flags_on() for
1082 * details of the interface. */
1084 netdev_turn_flags_off(struct netdev *netdev, enum netdev_flags flags,
1085 struct netdev_saved_flags **sfp)
1087 return do_update_flags(netdev, flags, 0, NULL, sfp);
1090 /* Restores the flags that were saved in 'sf', and destroys 'sf'.
1091 * Does nothing if 'sf' is NULL. */
1093 netdev_restore_flags(struct netdev_saved_flags *sf)
1094 OVS_EXCLUDED(netdev_mutex)
1097 struct netdev *netdev = sf->netdev;
1098 enum netdev_flags old_flags;
1100 netdev->netdev_class->update_flags(netdev,
1101 sf->saved_flags & sf->saved_values,
1102 sf->saved_flags & ~sf->saved_values,
1105 ovs_mutex_lock(&netdev_mutex);
1106 list_remove(&sf->node);
1108 netdev_unref(netdev);
1112 /* Looks up the ARP table entry for 'ip' on 'netdev'. If one exists and can be
1113 * successfully retrieved, it stores the corresponding MAC address in 'mac' and
1114 * returns 0. Otherwise, it returns a positive errno value; in particular,
1115 * ENXIO indicates that there is no ARP table entry for 'ip' on 'netdev'. */
1117 netdev_arp_lookup(const struct netdev *netdev,
1118 ovs_be32 ip, uint8_t mac[ETH_ADDR_LEN])
1120 int error = (netdev->netdev_class->arp_lookup
1121 ? netdev->netdev_class->arp_lookup(netdev, ip, mac)
1124 memset(mac, 0, ETH_ADDR_LEN);
1129 /* Returns true if carrier is active (link light is on) on 'netdev'. */
1131 netdev_get_carrier(const struct netdev *netdev)
1134 enum netdev_flags flags;
1137 netdev_get_flags(netdev, &flags);
1138 if (!(flags & NETDEV_UP)) {
1142 if (!netdev->netdev_class->get_carrier) {
1146 error = netdev->netdev_class->get_carrier(netdev, &carrier);
1148 VLOG_DBG("%s: failed to get network device carrier status, assuming "
1149 "down: %s", netdev_get_name(netdev), ovs_strerror(error));
1156 /* Returns the number of times 'netdev''s carrier has changed. */
1158 netdev_get_carrier_resets(const struct netdev *netdev)
1160 return (netdev->netdev_class->get_carrier_resets
1161 ? netdev->netdev_class->get_carrier_resets(netdev)
1165 /* Attempts to force netdev_get_carrier() to poll 'netdev''s MII registers for
1166 * link status instead of checking 'netdev''s carrier. 'netdev''s MII
1167 * registers will be polled once ever 'interval' milliseconds. If 'netdev'
1168 * does not support MII, another method may be used as a fallback. If
1169 * 'interval' is less than or equal to zero, reverts netdev_get_carrier() to
1170 * its normal behavior.
1172 * Returns 0 if successful, otherwise a positive errno value. */
1174 netdev_set_miimon_interval(struct netdev *netdev, long long int interval)
1176 return (netdev->netdev_class->set_miimon_interval
1177 ? netdev->netdev_class->set_miimon_interval(netdev, interval)
1181 /* Retrieves current device stats for 'netdev'. */
1183 netdev_get_stats(const struct netdev *netdev, struct netdev_stats *stats)
1187 COVERAGE_INC(netdev_get_stats);
1188 error = (netdev->netdev_class->get_stats
1189 ? netdev->netdev_class->get_stats(netdev, stats)
1192 memset(stats, 0xff, sizeof *stats);
1197 /* Attempts to change the stats for 'netdev' to those provided in 'stats'.
1198 * Returns 0 if successful, otherwise a positive errno value.
1200 * This will probably fail for most network devices. Some devices might only
1201 * allow setting their stats to 0. */
1203 netdev_set_stats(struct netdev *netdev, const struct netdev_stats *stats)
1205 return (netdev->netdev_class->set_stats
1206 ? netdev->netdev_class->set_stats(netdev, stats)
1210 /* Attempts to set input rate limiting (policing) policy, such that up to
1211 * 'kbits_rate' kbps of traffic is accepted, with a maximum accumulative burst
1212 * size of 'kbits' kb. */
1214 netdev_set_policing(struct netdev *netdev, uint32_t kbits_rate,
1215 uint32_t kbits_burst)
1217 return (netdev->netdev_class->set_policing
1218 ? netdev->netdev_class->set_policing(netdev,
1219 kbits_rate, kbits_burst)
1223 /* Adds to 'types' all of the forms of QoS supported by 'netdev', or leaves it
1224 * empty if 'netdev' does not support QoS. Any names added to 'types' should
1225 * be documented as valid for the "type" column in the "QoS" table in
1226 * vswitchd/vswitch.xml (which is built as ovs-vswitchd.conf.db(8)).
1228 * Every network device supports disabling QoS with a type of "", but this type
1229 * will not be added to 'types'.
1231 * The caller must initialize 'types' (e.g. with sset_init()) before calling
1232 * this function. The caller is responsible for destroying 'types' (e.g. with
1233 * sset_destroy()) when it is no longer needed.
1235 * Returns 0 if successful, otherwise a positive errno value. */
1237 netdev_get_qos_types(const struct netdev *netdev, struct sset *types)
1239 const struct netdev_class *class = netdev->netdev_class;
1240 return (class->get_qos_types
1241 ? class->get_qos_types(netdev, types)
1245 /* Queries 'netdev' for its capabilities regarding the specified 'type' of QoS,
1246 * which should be "" or one of the types returned by netdev_get_qos_types()
1247 * for 'netdev'. Returns 0 if successful, otherwise a positive errno value.
1248 * On success, initializes 'caps' with the QoS capabilities; on failure, clears
1249 * 'caps' to all zeros. */
1251 netdev_get_qos_capabilities(const struct netdev *netdev, const char *type,
1252 struct netdev_qos_capabilities *caps)
1254 const struct netdev_class *class = netdev->netdev_class;
1257 int retval = (class->get_qos_capabilities
1258 ? class->get_qos_capabilities(netdev, type, caps)
1261 memset(caps, 0, sizeof *caps);
1265 /* Every netdev supports turning off QoS. */
1266 memset(caps, 0, sizeof *caps);
1271 /* Obtains the number of queues supported by 'netdev' for the specified 'type'
1272 * of QoS. Returns 0 if successful, otherwise a positive errno value. Stores
1273 * the number of queues (zero on failure) in '*n_queuesp'.
1275 * This is just a simple wrapper around netdev_get_qos_capabilities(). */
1277 netdev_get_n_queues(const struct netdev *netdev,
1278 const char *type, unsigned int *n_queuesp)
1280 struct netdev_qos_capabilities caps;
1283 retval = netdev_get_qos_capabilities(netdev, type, &caps);
1284 *n_queuesp = caps.n_queues;
1288 /* Queries 'netdev' about its currently configured form of QoS. If successful,
1289 * stores the name of the current form of QoS into '*typep', stores any details
1290 * of configuration as string key-value pairs in 'details', and returns 0. On
1291 * failure, sets '*typep' to NULL and returns a positive errno value.
1293 * A '*typep' of "" indicates that QoS is currently disabled on 'netdev'.
1295 * The caller must initialize 'details' as an empty smap (e.g. with
1296 * smap_init()) before calling this function. The caller must free 'details'
1297 * when it is no longer needed (e.g. with smap_destroy()).
1299 * The caller must not modify or free '*typep'.
1301 * '*typep' will be one of the types returned by netdev_get_qos_types() for
1302 * 'netdev'. The contents of 'details' should be documented as valid for
1303 * '*typep' in the "other_config" column in the "QoS" table in
1304 * vswitchd/vswitch.xml (which is built as ovs-vswitchd.conf.db(8)). */
1306 netdev_get_qos(const struct netdev *netdev,
1307 const char **typep, struct smap *details)
1309 const struct netdev_class *class = netdev->netdev_class;
1312 if (class->get_qos) {
1313 retval = class->get_qos(netdev, typep, details);
1316 smap_clear(details);
1320 /* 'netdev' doesn't support QoS, so report that QoS is disabled. */
1326 /* Attempts to reconfigure QoS on 'netdev', changing the form of QoS to 'type'
1327 * with details of configuration from 'details'. Returns 0 if successful,
1328 * otherwise a positive errno value. On error, the previous QoS configuration
1331 * When this function changes the type of QoS (not just 'details'), this also
1332 * resets all queue configuration for 'netdev' to their defaults (which depend
1333 * on the specific type of QoS). Otherwise, the queue configuration for
1334 * 'netdev' is unchanged.
1336 * 'type' should be "" (to disable QoS) or one of the types returned by
1337 * netdev_get_qos_types() for 'netdev'. The contents of 'details' should be
1338 * documented as valid for the given 'type' in the "other_config" column in the
1339 * "QoS" table in vswitchd/vswitch.xml (which is built as
1340 * ovs-vswitchd.conf.db(8)).
1342 * NULL may be specified for 'details' if there are no configuration
1345 netdev_set_qos(struct netdev *netdev,
1346 const char *type, const struct smap *details)
1348 const struct netdev_class *class = netdev->netdev_class;
1354 if (class->set_qos) {
1356 static const struct smap empty = SMAP_INITIALIZER(&empty);
1359 return class->set_qos(netdev, type, details);
1361 return *type ? EOPNOTSUPP : 0;
1365 /* Queries 'netdev' for information about the queue numbered 'queue_id'. If
1366 * successful, adds that information as string key-value pairs to 'details'.
1367 * Returns 0 if successful, otherwise a positive errno value.
1369 * 'queue_id' must be less than the number of queues supported by 'netdev' for
1370 * the current form of QoS (e.g. as returned by netdev_get_n_queues(netdev)).
1372 * The returned contents of 'details' should be documented as valid for the
1373 * given 'type' in the "other_config" column in the "Queue" table in
1374 * vswitchd/vswitch.xml (which is built as ovs-vswitchd.conf.db(8)).
1376 * The caller must initialize 'details' (e.g. with smap_init()) before calling
1377 * this function. The caller must free 'details' when it is no longer needed
1378 * (e.g. with smap_destroy()). */
1380 netdev_get_queue(const struct netdev *netdev,
1381 unsigned int queue_id, struct smap *details)
1383 const struct netdev_class *class = netdev->netdev_class;
1386 retval = (class->get_queue
1387 ? class->get_queue(netdev, queue_id, details)
1390 smap_clear(details);
1395 /* Configures the queue numbered 'queue_id' on 'netdev' with the key-value
1396 * string pairs in 'details'. The contents of 'details' should be documented
1397 * as valid for the given 'type' in the "other_config" column in the "Queue"
1398 * table in vswitchd/vswitch.xml (which is built as ovs-vswitchd.conf.db(8)).
1399 * Returns 0 if successful, otherwise a positive errno value. On failure, the
1400 * given queue's configuration should be unmodified.
1402 * 'queue_id' must be less than the number of queues supported by 'netdev' for
1403 * the current form of QoS (e.g. as returned by netdev_get_n_queues(netdev)).
1405 * This function does not modify 'details', and the caller retains ownership of
1408 netdev_set_queue(struct netdev *netdev,
1409 unsigned int queue_id, const struct smap *details)
1411 const struct netdev_class *class = netdev->netdev_class;
1412 return (class->set_queue
1413 ? class->set_queue(netdev, queue_id, details)
1417 /* Attempts to delete the queue numbered 'queue_id' from 'netdev'. Some kinds
1418 * of QoS may have a fixed set of queues, in which case attempts to delete them
1419 * will fail with EOPNOTSUPP.
1421 * Returns 0 if successful, otherwise a positive errno value. On failure, the
1422 * given queue will be unmodified.
1424 * 'queue_id' must be less than the number of queues supported by 'netdev' for
1425 * the current form of QoS (e.g. as returned by
1426 * netdev_get_n_queues(netdev)). */
1428 netdev_delete_queue(struct netdev *netdev, unsigned int queue_id)
1430 const struct netdev_class *class = netdev->netdev_class;
1431 return (class->delete_queue
1432 ? class->delete_queue(netdev, queue_id)
1436 /* Obtains statistics about 'queue_id' on 'netdev'. On success, returns 0 and
1437 * fills 'stats' with the queue's statistics; individual members of 'stats' may
1438 * be set to all-1-bits if the statistic is unavailable. On failure, returns a
1439 * positive errno value and fills 'stats' with values indicating unsupported
1442 netdev_get_queue_stats(const struct netdev *netdev, unsigned int queue_id,
1443 struct netdev_queue_stats *stats)
1445 const struct netdev_class *class = netdev->netdev_class;
1448 retval = (class->get_queue_stats
1449 ? class->get_queue_stats(netdev, queue_id, stats)
1452 stats->tx_bytes = UINT64_MAX;
1453 stats->tx_packets = UINT64_MAX;
1454 stats->tx_errors = UINT64_MAX;
1455 stats->created = LLONG_MIN;
1460 /* Initializes 'dump' to begin dumping the queues in a netdev.
1462 * This function provides no status indication. An error status for the entire
1463 * dump operation is provided when it is completed by calling
1464 * netdev_queue_dump_done().
1467 netdev_queue_dump_start(struct netdev_queue_dump *dump,
1468 const struct netdev *netdev)
1470 dump->netdev = netdev_ref(netdev);
1471 if (netdev->netdev_class->queue_dump_start) {
1472 dump->error = netdev->netdev_class->queue_dump_start(netdev,
1475 dump->error = EOPNOTSUPP;
1479 /* Attempts to retrieve another queue from 'dump', which must have been
1480 * initialized with netdev_queue_dump_start(). On success, stores a new queue
1481 * ID into '*queue_id', fills 'details' with configuration details for the
1482 * queue, and returns true. On failure, returns false.
1484 * Queues are not necessarily dumped in increasing order of queue ID (or any
1485 * other predictable order).
1487 * Failure might indicate an actual error or merely that the last queue has
1488 * been dumped. An error status for the entire dump operation is provided when
1489 * it is completed by calling netdev_queue_dump_done().
1491 * The returned contents of 'details' should be documented as valid for the
1492 * given 'type' in the "other_config" column in the "Queue" table in
1493 * vswitchd/vswitch.xml (which is built as ovs-vswitchd.conf.db(8)).
1495 * The caller must initialize 'details' (e.g. with smap_init()) before calling
1496 * this function. This function will clear and replace its contents. The
1497 * caller must free 'details' when it is no longer needed (e.g. with
1498 * smap_destroy()). */
1500 netdev_queue_dump_next(struct netdev_queue_dump *dump,
1501 unsigned int *queue_id, struct smap *details)
1503 const struct netdev *netdev = dump->netdev;
1509 dump->error = netdev->netdev_class->queue_dump_next(netdev, dump->state,
1513 netdev->netdev_class->queue_dump_done(netdev, dump->state);
1519 /* Completes queue table dump operation 'dump', which must have been
1520 * initialized with netdev_queue_dump_start(). Returns 0 if the dump operation
1521 * was error-free, otherwise a positive errno value describing the problem. */
1523 netdev_queue_dump_done(struct netdev_queue_dump *dump)
1525 const struct netdev *netdev = dump->netdev;
1526 if (!dump->error && netdev->netdev_class->queue_dump_done) {
1527 dump->error = netdev->netdev_class->queue_dump_done(netdev,
1530 netdev_close(dump->netdev);
1531 return dump->error == EOF ? 0 : dump->error;
1534 /* Iterates over all of 'netdev''s queues, calling 'cb' with the queue's ID,
1535 * its statistics, and the 'aux' specified by the caller. The order of
1536 * iteration is unspecified, but (when successful) each queue is visited
1539 * Calling this function may be more efficient than calling
1540 * netdev_get_queue_stats() for every queue.
1542 * 'cb' must not modify or free the statistics passed in.
1544 * Returns 0 if successful, otherwise a positive errno value. On error, some
1545 * configured queues may not have been included in the iteration. */
1547 netdev_dump_queue_stats(const struct netdev *netdev,
1548 netdev_dump_queue_stats_cb *cb, void *aux)
1550 const struct netdev_class *class = netdev->netdev_class;
1551 return (class->dump_queue_stats
1552 ? class->dump_queue_stats(netdev, cb, aux)
1557 /* Returns the class type of 'netdev'.
1559 * The caller must not free the returned value. */
1561 netdev_get_type(const struct netdev *netdev)
1563 return netdev->netdev_class->type;
1566 /* Returns the class associated with 'netdev'. */
1567 const struct netdev_class *
1568 netdev_get_class(const struct netdev *netdev)
1570 return netdev->netdev_class;
1573 /* Returns the netdev with 'name' or NULL if there is none.
1575 * The caller must free the returned netdev with netdev_close(). */
1577 netdev_from_name(const char *name)
1578 OVS_EXCLUDED(netdev_mutex)
1580 struct netdev *netdev;
1582 ovs_mutex_lock(&netdev_mutex);
1583 netdev = shash_find_data(&netdev_shash, name);
1587 ovs_mutex_unlock(&netdev_mutex);
1592 /* Fills 'device_list' with devices that match 'netdev_class'.
1594 * The caller is responsible for initializing and destroying 'device_list' and
1595 * must close each device on the list. */
1597 netdev_get_devices(const struct netdev_class *netdev_class,
1598 struct shash *device_list)
1599 OVS_EXCLUDED(netdev_mutex)
1601 struct shash_node *node;
1603 ovs_mutex_lock(&netdev_mutex);
1604 SHASH_FOR_EACH (node, &netdev_shash) {
1605 struct netdev *dev = node->data;
1607 if (dev->netdev_class == netdev_class) {
1609 shash_add(device_list, node->name, node->data);
1612 ovs_mutex_unlock(&netdev_mutex);
1616 netdev_get_type_from_name(const char *name)
1618 struct netdev *dev = netdev_from_name(name);
1619 const char *type = dev ? netdev_get_type(dev) : NULL;
1625 netdev_rxq_get_netdev(const struct netdev_rxq *rx)
1627 ovs_assert(rx->netdev->ref_cnt > 0);
1632 netdev_rxq_get_name(const struct netdev_rxq *rx)
1634 return netdev_get_name(netdev_rxq_get_netdev(rx));
1638 restore_all_flags(void *aux OVS_UNUSED)
1640 struct shash_node *node;
1642 SHASH_FOR_EACH (node, &netdev_shash) {
1643 struct netdev *netdev = node->data;
1644 const struct netdev_saved_flags *sf;
1645 enum netdev_flags saved_values;
1646 enum netdev_flags saved_flags;
1648 saved_values = saved_flags = 0;
1649 LIST_FOR_EACH (sf, node, &netdev->saved_flags_list) {
1650 saved_flags |= sf->saved_flags;
1651 saved_values &= ~sf->saved_flags;
1652 saved_values |= sf->saved_flags & sf->saved_values;
1655 enum netdev_flags old_flags;
1657 netdev->netdev_class->update_flags(netdev,
1658 saved_flags & saved_values,
1659 saved_flags & ~saved_values,
1666 netdev_get_change_seq(const struct netdev *netdev)
1668 return netdev->change_seq;