2 * Copyright (c) 2011, 2013, 2014 Gaetano Catalli.
3 * Copyright (c) 2013, 2014 YAMAMOTO Takashi.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
20 #include "netdev-provider.h"
24 #include <sys/types.h>
26 #include <sys/ioctl.h>
27 #include <sys/socket.h>
28 #include <sys/sockio.h>
30 #include <pcap/pcap.h>
32 #include <net/if_dl.h>
33 #include <net/if_media.h>
34 #include <net/if_tap.h>
35 #include <netinet/in.h>
36 #ifdef HAVE_NET_IF_MIB_H
37 #include <net/if_mib.h>
42 #include <sys/sysctl.h>
43 #if defined(__NetBSD__)
44 #include <net/route.h>
45 #include <netinet/in.h>
46 #include <netinet/if_inarp.h>
51 #include "dpif-netdev.h"
52 #include "dynamic-string.h"
53 #include "fatal-signal.h"
55 #include "openflow/openflow.h"
56 #include "ovs-thread.h"
57 #include "packet-dpif.h"
59 #include "poll-loop.h"
61 #include "socket-util.h"
64 #include "openvswitch/vlog.h"
66 VLOG_DEFINE_THIS_MODULE(netdev_bsd);
69 struct netdev_rxq_bsd {
72 /* Packet capture descriptor for a system network device.
73 * For a tap device this is NULL. */
76 /* Selectable file descriptor for the network device.
77 * This descriptor will be used for polling operations. */
84 /* Never changes after initialization. */
87 /* Protects all members below. */
88 struct ovs_mutex mutex;
90 unsigned int cache_valid;
93 uint8_t etheraddr[ETH_ADDR_LEN];
95 struct in_addr netmask;
100 int tap_fd; /* TAP character device, if any, otherwise -1. */
102 /* Used for sending packets on non-tap devices. */
109 VALID_IFINDEX = 1 << 0,
110 VALID_ETHERADDR = 1 << 1,
114 VALID_CARRIER = 1 << 5
117 #define PCAP_SNAPLEN 2048
121 * Notifier used to invalidate device informations in case of status change.
123 * It will be registered with a 'rtbsd_notifier_register()' when the first
124 * device will be created with the call of either 'netdev_bsd_tap_create()' or
125 * 'netdev_bsd_system_create()'.
127 * The callback associated with this notifier ('netdev_bsd_cache_cb()') will
128 * invalidate cached information about the device.
130 static struct rtbsd_notifier netdev_bsd_cache_notifier;
131 static int cache_notifier_refcount;
133 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20);
135 static void destroy_tap(int fd, const char *name);
136 static int get_flags(const struct netdev *, int *flagsp);
137 static int set_flags(const char *, int flags);
138 static int do_set_addr(struct netdev *netdev,
139 unsigned long ioctl_nr, const char *ioctl_name,
140 struct in_addr addr);
141 static int get_etheraddr(const char *netdev_name, uint8_t ea[ETH_ADDR_LEN]);
142 static int set_etheraddr(const char *netdev_name, int hwaddr_family,
143 int hwaddr_len, const uint8_t[ETH_ADDR_LEN]);
144 static int get_ifindex(const struct netdev *, int *ifindexp);
146 static int ifr_get_flags(const struct ifreq *);
147 static void ifr_set_flags(struct ifreq *, int flags);
150 static int af_link_ioctl(unsigned long command, const void *arg);
153 static void netdev_bsd_run(void);
154 static int netdev_bsd_get_mtu(const struct netdev *netdev_, int *mtup);
157 is_netdev_bsd_class(const struct netdev_class *netdev_class)
159 return netdev_class->run == netdev_bsd_run;
162 static struct netdev_bsd *
163 netdev_bsd_cast(const struct netdev *netdev)
165 ovs_assert(is_netdev_bsd_class(netdev_get_class(netdev)));
166 return CONTAINER_OF(netdev, struct netdev_bsd, up);
169 static struct netdev_rxq_bsd *
170 netdev_rxq_bsd_cast(const struct netdev_rxq *rxq)
172 ovs_assert(is_netdev_bsd_class(netdev_get_class(rxq->netdev)));
173 return CONTAINER_OF(rxq, struct netdev_rxq_bsd, up);
177 netdev_get_kernel_name(const struct netdev *netdev)
179 return netdev_bsd_cast(netdev)->kernel_name;
183 * Perform periodic work needed by netdev. In BSD netdevs it checks for any
184 * interface status changes, and eventually calls all the user callbacks.
189 rtbsd_notifier_run();
193 * Arranges for poll_block() to wake up if the "run" member function needs to
197 netdev_bsd_wait(void)
199 rtbsd_notifier_wait();
202 /* Invalidate cache in case of interface status change. */
204 netdev_bsd_cache_cb(const struct rtbsd_change *change,
205 void *aux OVS_UNUSED)
207 struct netdev_bsd *dev;
210 struct netdev *base_dev = netdev_from_name(change->if_name);
213 const struct netdev_class *netdev_class =
214 netdev_get_class(base_dev);
216 if (is_netdev_bsd_class(netdev_class)) {
217 dev = netdev_bsd_cast(base_dev);
218 dev->cache_valid = 0;
219 netdev_change_seq_changed(base_dev);
221 netdev_close(base_dev);
225 * XXX the API is lacking, we should be able to iterate on the list of
226 * netdevs without having to store the info in a temp shash.
228 struct shash device_shash;
229 struct shash_node *node;
231 shash_init(&device_shash);
232 netdev_get_devices(&netdev_bsd_class, &device_shash);
233 SHASH_FOR_EACH (node, &device_shash) {
234 struct netdev *netdev = node->data;
235 dev = netdev_bsd_cast(netdev);
236 dev->cache_valid = 0;
237 netdev_change_seq_changed(netdev);
238 netdev_close(netdev);
240 shash_destroy(&device_shash);
245 cache_notifier_ref(void)
249 if (!cache_notifier_refcount) {
250 ret = rtbsd_notifier_register(&netdev_bsd_cache_notifier,
251 netdev_bsd_cache_cb, NULL);
256 cache_notifier_refcount++;
261 cache_notifier_unref(void)
263 cache_notifier_refcount--;
264 if (cache_notifier_refcount == 0) {
265 rtbsd_notifier_unregister(&netdev_bsd_cache_notifier);
270 static struct netdev *
271 netdev_bsd_alloc(void)
273 struct netdev_bsd *netdev = xzalloc(sizeof *netdev);
278 netdev_bsd_construct_system(struct netdev *netdev_)
280 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
281 enum netdev_flags flags;
284 error = cache_notifier_ref();
289 ovs_mutex_init(&netdev->mutex);
291 netdev->kernel_name = xstrdup(netdev_->name);
293 /* Verify that the netdev really exists by attempting to read its flags */
294 error = netdev_get_flags(netdev_, &flags);
295 if (error == ENXIO) {
296 free(netdev->kernel_name);
297 cache_notifier_unref();
305 netdev_bsd_construct_tap(struct netdev *netdev_)
307 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
308 const char *name = netdev_->name;
311 char *kernel_name = NULL;
313 error = cache_notifier_ref();
318 memset(&ifr, 0, sizeof(ifr));
320 /* Create a tap device by opening /dev/tap. The TAPGIFNAME ioctl is used
321 * to retrieve the name of the tap device. */
322 ovs_mutex_init(&netdev->mutex);
323 netdev->tap_fd = open("/dev/tap", O_RDWR);
324 if (netdev->tap_fd < 0) {
326 VLOG_WARN("opening \"/dev/tap\" failed: %s", ovs_strerror(error));
327 goto error_unref_notifier;
330 /* Retrieve tap name (e.g. tap0) */
331 if (ioctl(netdev->tap_fd, TAPGIFNAME, &ifr) == -1) {
332 /* XXX Need to destroy the device? */
334 close(netdev->tap_fd);
335 goto error_unref_notifier;
338 /* Change the name of the tap device */
339 #if defined(SIOCSIFNAME)
340 ifr.ifr_data = (void *)name;
341 error = af_inet_ioctl(SIOCSIFNAME, &ifr);
343 destroy_tap(netdev->tap_fd, ifr.ifr_name);
344 goto error_unref_notifier;
346 kernel_name = xstrdup(name);
349 * NetBSD doesn't support inteface renaming.
351 VLOG_INFO("tap %s is created for bridge %s", ifr.ifr_name, name);
352 kernel_name = xstrdup(ifr.ifr_name);
355 /* set non-blocking. */
356 error = set_nonblocking(netdev->tap_fd);
358 destroy_tap(netdev->tap_fd, kernel_name);
359 goto error_unref_notifier;
363 ifr_set_flags(&ifr, IFF_UP);
364 ovs_strlcpy(ifr.ifr_name, kernel_name, sizeof ifr.ifr_name);
365 error = af_inet_ioctl(SIOCSIFFLAGS, &ifr);
367 destroy_tap(netdev->tap_fd, kernel_name);
368 goto error_unref_notifier;
371 netdev->kernel_name = kernel_name;
375 error_unref_notifier:
376 ovs_mutex_destroy(&netdev->mutex);
377 cache_notifier_unref();
384 netdev_bsd_destruct(struct netdev *netdev_)
386 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
388 cache_notifier_unref();
390 if (netdev->tap_fd >= 0) {
391 destroy_tap(netdev->tap_fd, netdev_get_kernel_name(netdev_));
394 pcap_close(netdev->pcap);
396 free(netdev->kernel_name);
397 ovs_mutex_destroy(&netdev->mutex);
401 netdev_bsd_dealloc(struct netdev *netdev_)
403 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
409 netdev_bsd_open_pcap(const char *name, pcap_t **pcapp, int *fdp)
411 char errbuf[PCAP_ERRBUF_SIZE];
417 /* Open the pcap device. The device is opened in non-promiscuous mode
418 * because the interface flags are manually set by the caller. */
420 pcap = pcap_open_live(name, PCAP_SNAPLEN, 0, 1000, errbuf);
422 VLOG_ERR_RL(&rl, "%s: pcap_open_live failed: %s", name, errbuf);
426 if (errbuf[0] != '\0') {
427 VLOG_WARN_RL(&rl, "%s: pcap_open_live: %s", name, errbuf);
430 /* Get the underlying fd. */
431 fd = pcap_get_selectable_fd(pcap);
433 VLOG_WARN_RL(&rl, "%s: no selectable file descriptor", name);
438 /* Set non-blocking mode. Also the BIOCIMMEDIATE ioctl must be called
439 * on the file descriptor returned by pcap_get_selectable_fd to achieve
440 * a real non-blocking behaviour.*/
441 error = pcap_setnonblock(pcap, 1, errbuf);
447 /* This call assure that reads return immediately upon packet
448 * reception. Otherwise, a read will block until either the kernel
449 * buffer becomes full or a timeout occurs. */
450 if (ioctl(fd, BIOCIMMEDIATE, &one) < 0 ) {
451 VLOG_ERR_RL(&rl, "ioctl(BIOCIMMEDIATE) on %s device failed: %s",
452 name, ovs_strerror(errno));
457 /* Capture only incoming packets. */
458 error = pcap_setdirection(pcap, PCAP_D_IN);
477 static struct netdev_rxq *
478 netdev_bsd_rxq_alloc(void)
480 struct netdev_rxq_bsd *rxq = xzalloc(sizeof *rxq);
485 netdev_bsd_rxq_construct(struct netdev_rxq *rxq_)
487 struct netdev_rxq_bsd *rxq = netdev_rxq_bsd_cast(rxq_);
488 struct netdev *netdev_ = rxq->up.netdev;
489 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
492 if (!strcmp(netdev_get_type(netdev_), "tap")) {
493 rxq->pcap_handle = NULL;
494 rxq->fd = netdev->tap_fd;
497 ovs_mutex_lock(&netdev->mutex);
498 error = netdev_bsd_open_pcap(netdev_get_kernel_name(netdev_),
499 &rxq->pcap_handle, &rxq->fd);
500 ovs_mutex_unlock(&netdev->mutex);
507 netdev_bsd_rxq_destruct(struct netdev_rxq *rxq_)
509 struct netdev_rxq_bsd *rxq = netdev_rxq_bsd_cast(rxq_);
511 if (rxq->pcap_handle) {
512 pcap_close(rxq->pcap_handle);
517 netdev_bsd_rxq_dealloc(struct netdev_rxq *rxq_)
519 struct netdev_rxq_bsd *rxq = netdev_rxq_bsd_cast(rxq_);
524 /* The recv callback of the netdev class returns the number of bytes of the
527 * This can be done by the pcap_next() function. Unfortunately pcap_next() does
528 * not make difference between a missing packet on the capture interface and
529 * an error during the file capture. We can use the pcap_dispatch() function
530 * instead, which is able to distinguish between errors and null packet.
532 * To make pcap_dispatch() returns the number of bytes read from the interface
533 * we need to define the following callback and argument.
542 * This callback will be executed on every captured packet.
544 * If the packet captured by pcap_dispatch() does not fit the pcap buffer,
545 * pcap returns a truncated packet and we follow this behavior.
547 * The argument args->retval is the packet size in bytes.
550 proc_pkt(u_char *args_, const struct pcap_pkthdr *hdr, const u_char *packet)
552 struct pcap_arg *args = ALIGNED_CAST(struct pcap_arg *, args_);
554 if (args->size < hdr->len) {
555 VLOG_WARN_RL(&rl, "packet truncated");
556 args->retval = args->size;
558 args->retval = hdr->len;
561 /* copy the packet to our buffer */
562 memcpy(args->data, packet, args->retval);
566 * This function attempts to receive a packet from the specified network
567 * device. It is assumed that the network device is a system device or a tap
568 * device opened as a system one. In this case the read operation is performed
572 netdev_rxq_bsd_recv_pcap(struct netdev_rxq_bsd *rxq, struct ofpbuf *buffer)
577 /* prepare the pcap argument to store the packet */
578 arg.size = ofpbuf_tailroom(buffer);
579 arg.data = ofpbuf_data(buffer);
582 ret = pcap_dispatch(rxq->pcap_handle, 1, proc_pkt, (u_char *) &arg);
585 ofpbuf_set_size(buffer, ofpbuf_size(buffer) + arg.retval);
589 if (errno == EINTR) {
599 * This function attempts to receive a packet from the specified network
600 * device. It is assumed that the network device is a tap device and
601 * 'rxq->fd' is initialized with the tap file descriptor.
604 netdev_rxq_bsd_recv_tap(struct netdev_rxq_bsd *rxq, struct ofpbuf *buffer)
606 size_t size = ofpbuf_tailroom(buffer);
609 ssize_t retval = read(rxq->fd, ofpbuf_data(buffer), size);
611 ofpbuf_set_size(buffer, ofpbuf_size(buffer) + retval);
613 } else if (errno != EINTR) {
614 if (errno != EAGAIN) {
615 VLOG_WARN_RL(&rl, "error receiving Ethernet packet on %s: %s",
616 ovs_strerror(errno), netdev_rxq_get_name(&rxq->up));
624 netdev_bsd_rxq_recv(struct netdev_rxq *rxq_, struct dpif_packet **packets,
627 struct netdev_rxq_bsd *rxq = netdev_rxq_bsd_cast(rxq_);
628 struct netdev *netdev = rxq->up.netdev;
629 struct dpif_packet *packet;
630 struct ofpbuf *buffer;
634 if (netdev_bsd_get_mtu(netdev, &mtu)) {
635 mtu = ETH_PAYLOAD_MAX;
638 packet = dpif_packet_new_with_headroom(VLAN_ETH_HEADER_LEN + mtu,
640 buffer = &packet->ofpbuf;
642 retval = (rxq->pcap_handle
643 ? netdev_rxq_bsd_recv_pcap(rxq, buffer)
644 : netdev_rxq_bsd_recv_tap(rxq, buffer));
647 dpif_packet_delete(packet);
649 dp_packet_pad(buffer);
650 dpif_packet_set_dp_hash(packet, 0);
658 * Registers with the poll loop to wake up from the next call to poll_block()
659 * when a packet is ready to be received with netdev_rxq_recv() on 'rxq'.
662 netdev_bsd_rxq_wait(struct netdev_rxq *rxq_)
664 struct netdev_rxq_bsd *rxq = netdev_rxq_bsd_cast(rxq_);
666 poll_fd_wait(rxq->fd, POLLIN);
669 /* Discards all packets waiting to be received from 'rxq'. */
671 netdev_bsd_rxq_drain(struct netdev_rxq *rxq_)
674 struct netdev_rxq_bsd *rxq = netdev_rxq_bsd_cast(rxq_);
676 strcpy(ifr.ifr_name, netdev_get_kernel_name(netdev_rxq_get_netdev(rxq_)));
677 if (ioctl(rxq->fd, BIOCFLUSH, &ifr) == -1) {
678 VLOG_DBG_RL(&rl, "%s: ioctl(BIOCFLUSH) failed: %s",
679 netdev_rxq_get_name(rxq_), ovs_strerror(errno));
686 * Send a packet on the specified network device. The device could be either a
687 * system or a tap device.
690 netdev_bsd_send(struct netdev *netdev_, int qid OVS_UNUSED,
691 struct dpif_packet **pkts, int cnt, bool may_steal)
693 struct netdev_bsd *dev = netdev_bsd_cast(netdev_);
694 const char *name = netdev_get_name(netdev_);
698 ovs_mutex_lock(&dev->mutex);
699 if (dev->tap_fd < 0 && !dev->pcap) {
700 error = netdev_bsd_open_pcap(name, &dev->pcap, &dev->fd);
705 for (i = 0; i < cnt; i++) {
706 const void *data = ofpbuf_data(&pkts[i]->ofpbuf);
707 size_t size = ofpbuf_size(&pkts[i]->ofpbuf);
711 if (dev->tap_fd >= 0) {
712 retval = write(dev->tap_fd, data, size);
714 retval = pcap_inject(dev->pcap, data, size);
717 if (errno == EINTR) {
721 if (error != EAGAIN) {
722 VLOG_WARN_RL(&rl, "error sending Ethernet packet on"
723 " %s: %s", name, ovs_strerror(error));
726 } else if (retval != size) {
727 VLOG_WARN_RL(&rl, "sent partial Ethernet packet "
728 "(%"PRIuSIZE" bytes of "
729 "%"PRIuSIZE") on %s", retval, size, name);
737 ovs_mutex_unlock(&dev->mutex);
739 for (i = 0; i < cnt; i++) {
740 dpif_packet_delete(pkts[i]);
748 * Registers with the poll loop to wake up from the next call to poll_block()
749 * when the packet transmission queue has sufficient room to transmit a packet
750 * with netdev_send().
753 netdev_bsd_send_wait(struct netdev *netdev_, int qid OVS_UNUSED)
755 struct netdev_bsd *dev = netdev_bsd_cast(netdev_);
757 ovs_mutex_lock(&dev->mutex);
758 if (dev->tap_fd >= 0) {
759 /* TAP device always accepts packets. */
760 poll_immediate_wake();
761 } else if (dev->pcap) {
762 poll_fd_wait(dev->fd, POLLOUT);
764 /* We haven't even tried to send a packet yet. */
765 poll_immediate_wake();
767 ovs_mutex_unlock(&dev->mutex);
771 * Attempts to set 'netdev''s MAC address to 'mac'. Returns 0 if successful,
772 * otherwise a positive errno value.
775 netdev_bsd_set_etheraddr(struct netdev *netdev_,
776 const uint8_t mac[ETH_ADDR_LEN])
778 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
781 ovs_mutex_lock(&netdev->mutex);
782 if (!(netdev->cache_valid & VALID_ETHERADDR)
783 || !eth_addr_equals(netdev->etheraddr, mac)) {
784 error = set_etheraddr(netdev_get_kernel_name(netdev_), AF_LINK,
787 netdev->cache_valid |= VALID_ETHERADDR;
788 memcpy(netdev->etheraddr, mac, ETH_ADDR_LEN);
789 netdev_change_seq_changed(netdev_);
792 ovs_mutex_unlock(&netdev->mutex);
798 * Returns a pointer to 'netdev''s MAC address. The caller must not modify or
799 * free the returned buffer.
802 netdev_bsd_get_etheraddr(const struct netdev *netdev_,
803 uint8_t mac[ETH_ADDR_LEN])
805 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
808 ovs_mutex_lock(&netdev->mutex);
809 if (!(netdev->cache_valid & VALID_ETHERADDR)) {
810 error = get_etheraddr(netdev_get_kernel_name(netdev_),
813 netdev->cache_valid |= VALID_ETHERADDR;
817 memcpy(mac, netdev->etheraddr, ETH_ADDR_LEN);
819 ovs_mutex_unlock(&netdev->mutex);
825 * Returns the maximum size of transmitted (and received) packets on 'netdev',
826 * in bytes, not including the hardware header; thus, this is typically 1500
827 * bytes for Ethernet devices.
830 netdev_bsd_get_mtu(const struct netdev *netdev_, int *mtup)
832 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
835 ovs_mutex_lock(&netdev->mutex);
836 if (!(netdev->cache_valid & VALID_MTU)) {
839 error = af_inet_ifreq_ioctl(netdev_get_kernel_name(netdev_), &ifr,
840 SIOCGIFMTU, "SIOCGIFMTU");
842 netdev->mtu = ifr.ifr_mtu;
843 netdev->cache_valid |= VALID_MTU;
849 ovs_mutex_unlock(&netdev->mutex);
855 netdev_bsd_get_ifindex(const struct netdev *netdev_)
857 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
860 ovs_mutex_lock(&netdev->mutex);
861 error = get_ifindex(netdev_, &ifindex);
862 ovs_mutex_unlock(&netdev->mutex);
864 return error ? -error : ifindex;
868 netdev_bsd_get_carrier(const struct netdev *netdev_, bool *carrier)
870 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
873 ovs_mutex_lock(&netdev->mutex);
874 if (!(netdev->cache_valid & VALID_CARRIER)) {
875 struct ifmediareq ifmr;
877 memset(&ifmr, 0, sizeof(ifmr));
878 ovs_strlcpy(ifmr.ifm_name, netdev_get_kernel_name(netdev_),
879 sizeof ifmr.ifm_name);
881 error = af_inet_ioctl(SIOCGIFMEDIA, &ifmr);
883 netdev->carrier = (ifmr.ifm_status & IFM_ACTIVE) == IFM_ACTIVE;
884 netdev->cache_valid |= VALID_CARRIER;
886 /* If the interface doesn't report whether the media is active,
887 * just assume it is active. */
888 if ((ifmr.ifm_status & IFM_AVALID) == 0) {
889 netdev->carrier = true;
892 VLOG_DBG_RL(&rl, "%s: ioctl(SIOCGIFMEDIA) failed: %s",
893 netdev_get_name(netdev_), ovs_strerror(error));
897 *carrier = netdev->carrier;
899 ovs_mutex_unlock(&netdev->mutex);
905 convert_stats_system(struct netdev_stats *stats, const struct if_data *ifd)
908 * note: UINT64_MAX means unsupported
910 stats->rx_packets = ifd->ifi_ipackets;
911 stats->tx_packets = ifd->ifi_opackets;
912 stats->rx_bytes = ifd->ifi_obytes;
913 stats->tx_bytes = ifd->ifi_ibytes;
914 stats->rx_errors = ifd->ifi_ierrors;
915 stats->tx_errors = ifd->ifi_oerrors;
916 stats->rx_dropped = ifd->ifi_iqdrops;
917 stats->tx_dropped = UINT64_MAX;
918 stats->multicast = ifd->ifi_imcasts;
919 stats->collisions = ifd->ifi_collisions;
920 stats->rx_length_errors = UINT64_MAX;
921 stats->rx_over_errors = UINT64_MAX;
922 stats->rx_crc_errors = UINT64_MAX;
923 stats->rx_frame_errors = UINT64_MAX;
924 stats->rx_fifo_errors = UINT64_MAX;
925 stats->rx_missed_errors = UINT64_MAX;
926 stats->tx_aborted_errors = UINT64_MAX;
927 stats->tx_carrier_errors = UINT64_MAX;
928 stats->tx_fifo_errors = UINT64_MAX;
929 stats->tx_heartbeat_errors = UINT64_MAX;
930 stats->tx_window_errors = UINT64_MAX;
934 convert_stats_tap(struct netdev_stats *stats, const struct if_data *ifd)
937 * Similar to convert_stats_system but swapping rxq and tx
938 * because 'ifd' is stats for the network interface side of the
939 * tap device and what the caller wants is one for the character
942 * note: UINT64_MAX means unsupported
944 stats->rx_packets = ifd->ifi_opackets;
945 stats->tx_packets = ifd->ifi_ipackets;
946 stats->rx_bytes = ifd->ifi_ibytes;
947 stats->tx_bytes = ifd->ifi_obytes;
948 stats->rx_errors = ifd->ifi_oerrors;
949 stats->tx_errors = ifd->ifi_ierrors;
950 stats->rx_dropped = UINT64_MAX;
951 stats->tx_dropped = ifd->ifi_iqdrops;
952 stats->multicast = ifd->ifi_omcasts;
953 stats->collisions = UINT64_MAX;
954 stats->rx_length_errors = UINT64_MAX;
955 stats->rx_over_errors = UINT64_MAX;
956 stats->rx_crc_errors = UINT64_MAX;
957 stats->rx_frame_errors = UINT64_MAX;
958 stats->rx_fifo_errors = UINT64_MAX;
959 stats->rx_missed_errors = UINT64_MAX;
960 stats->tx_aborted_errors = UINT64_MAX;
961 stats->tx_carrier_errors = UINT64_MAX;
962 stats->tx_fifo_errors = UINT64_MAX;
963 stats->tx_heartbeat_errors = UINT64_MAX;
964 stats->tx_window_errors = UINT64_MAX;
968 convert_stats(const struct netdev *netdev, struct netdev_stats *stats,
969 const struct if_data *ifd)
971 if (netdev_bsd_cast(netdev)->tap_fd == -1) {
972 convert_stats_system(stats, ifd);
974 convert_stats_tap(stats, ifd);
978 /* Retrieves current device stats for 'netdev'. */
980 netdev_bsd_get_stats(const struct netdev *netdev_, struct netdev_stats *stats)
982 #if defined(__FreeBSD__)
986 struct ifmibdata ifmd;
991 mib[2] = NETLINK_GENERIC;
992 mib[3] = IFMIB_SYSTEM;
993 mib[4] = IFMIB_IFCOUNT;
995 len = sizeof(if_count);
997 if (sysctl(mib, 5, &if_count, &len, (void *)0, 0) == -1) {
998 VLOG_DBG_RL(&rl, "%s: sysctl failed: %s",
999 netdev_get_name(netdev_), ovs_strerror(errno));
1003 mib[5] = IFDATA_GENERAL;
1004 mib[3] = IFMIB_IFDATA;
1006 for (i = 1; i <= if_count; i++) {
1008 if (sysctl(mib, 6, &ifmd, &len, (void *)0, 0) == -1) {
1009 VLOG_DBG_RL(&rl, "%s: sysctl failed: %s",
1010 netdev_get_name(netdev_), ovs_strerror(errno));
1012 } else if (!strcmp(ifmd.ifmd_name, netdev_get_name(netdev_))) {
1013 convert_stats(netdev_, stats, &ifmd.ifmd_data);
1019 #elif defined(__NetBSD__)
1020 struct ifdatareq ifdr;
1023 memset(&ifdr, 0, sizeof(ifdr));
1024 ovs_strlcpy(ifdr.ifdr_name, netdev_get_kernel_name(netdev_),
1025 sizeof(ifdr.ifdr_name));
1026 error = af_link_ioctl(SIOCGIFDATA, &ifdr);
1028 convert_stats(netdev_, stats, &ifdr.ifdr_data);
1032 #error not implemented
1037 netdev_bsd_parse_media(int media)
1039 uint32_t supported = 0;
1040 bool half_duplex = media & IFM_HDX ? true : false;
1042 switch (IFM_SUBTYPE(media)) {
1047 supported |= half_duplex ? NETDEV_F_10MB_HD : NETDEV_F_10MB_FD;
1048 supported |= NETDEV_F_COPPER;
1052 supported |= half_duplex ? NETDEV_F_10MB_HD : NETDEV_F_10MB_FD;
1053 supported |= NETDEV_F_FIBER;
1060 supported |= half_duplex ? NETDEV_F_100MB_HD : NETDEV_F_100MB_FD;
1061 supported |= NETDEV_F_COPPER;
1065 supported |= half_duplex ? NETDEV_F_100MB_HD : NETDEV_F_100MB_FD;
1066 supported |= NETDEV_F_FIBER;
1071 supported |= half_duplex ? NETDEV_F_1GB_HD : NETDEV_F_1GB_FD;
1072 supported |= NETDEV_F_COPPER;
1077 supported |= half_duplex ? NETDEV_F_1GB_HD : NETDEV_F_1GB_FD;
1078 supported |= NETDEV_F_FIBER;
1082 supported |= NETDEV_F_10GB_FD;
1083 supported |= NETDEV_F_COPPER;
1088 supported |= NETDEV_F_10GB_FD;
1089 supported |= NETDEV_F_FIBER;
1096 if (IFM_SUBTYPE(media) == IFM_AUTO) {
1097 supported |= NETDEV_F_AUTONEG;
1100 if (media & IFM_ETH_FMASK) {
1101 supported |= NETDEV_F_PAUSE;
1109 * Stores the features supported by 'netdev' into each of '*current',
1110 * '*advertised', '*supported', and '*peer' that are non-null. Each value is a
1111 * bitmap of "enum ofp_port_features" bits, in host byte order. Returns 0 if
1112 * successful, otherwise a positive errno value. On failure, all of the
1113 * passed-in values are set to 0.
1116 netdev_bsd_get_features(const struct netdev *netdev,
1117 enum netdev_features *current, uint32_t *advertised,
1118 enum netdev_features *supported, uint32_t *peer)
1120 struct ifmediareq ifmr;
1126 /* XXX Look into SIOCGIFCAP instead of SIOCGIFMEDIA */
1128 memset(&ifmr, 0, sizeof(ifmr));
1129 ovs_strlcpy(ifmr.ifm_name, netdev_get_name(netdev), sizeof ifmr.ifm_name);
1131 /* We make two SIOCGIFMEDIA ioctl calls. The first to determine the
1132 * number of supported modes, and a second with a buffer to retrieve
1134 error = af_inet_ioctl(SIOCGIFMEDIA, &ifmr);
1136 VLOG_DBG_RL(&rl, "%s: ioctl(SIOCGIFMEDIA) failed: %s",
1137 netdev_get_name(netdev), ovs_strerror(error));
1141 media_list = xcalloc(ifmr.ifm_count, sizeof(int));
1142 ifmr.ifm_ulist = media_list;
1144 if (IFM_TYPE(ifmr.ifm_current) != IFM_ETHER) {
1145 VLOG_DBG_RL(&rl, "%s: doesn't appear to be ethernet",
1146 netdev_get_name(netdev));
1151 error = af_inet_ioctl(SIOCGIFMEDIA, &ifmr);
1153 VLOG_DBG_RL(&rl, "%s: ioctl(SIOCGIFMEDIA) failed: %s",
1154 netdev_get_name(netdev), ovs_strerror(error));
1158 /* Current settings. */
1159 *current = netdev_bsd_parse_media(ifmr.ifm_active);
1161 /* Advertised features. */
1162 *advertised = netdev_bsd_parse_media(ifmr.ifm_current);
1164 /* Supported features. */
1166 for (i = 0; i < ifmr.ifm_count; i++) {
1167 *supported |= netdev_bsd_parse_media(ifmr.ifm_ulist[i]);
1170 /* Peer advertisements. */
1171 *peer = 0; /* XXX */
1180 * If 'netdev' has an assigned IPv4 address, sets '*in4' to that address and
1181 * '*netmask' to its netmask and returns true. Otherwise, returns false.
1184 netdev_bsd_get_in4(const struct netdev *netdev_, struct in_addr *in4,
1185 struct in_addr *netmask)
1187 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
1190 ovs_mutex_lock(&netdev->mutex);
1191 if (!(netdev->cache_valid & VALID_IN4)) {
1194 ifr.ifr_addr.sa_family = AF_INET;
1195 error = af_inet_ifreq_ioctl(netdev_get_kernel_name(netdev_), &ifr,
1196 SIOCGIFADDR, "SIOCGIFADDR");
1198 const struct sockaddr_in *sin;
1200 sin = ALIGNED_CAST(struct sockaddr_in *, &ifr.ifr_addr);
1201 netdev->in4 = sin->sin_addr;
1202 netdev->cache_valid |= VALID_IN4;
1203 error = af_inet_ifreq_ioctl(netdev_get_kernel_name(netdev_), &ifr,
1204 SIOCGIFNETMASK, "SIOCGIFNETMASK");
1206 *netmask = sin->sin_addr;
1212 *netmask = netdev->netmask;
1214 ovs_mutex_unlock(&netdev->mutex);
1216 return error ? error : in4->s_addr == INADDR_ANY ? EADDRNOTAVAIL : 0;
1220 * Assigns 'addr' as 'netdev''s IPv4 address and 'mask' as its netmask. If
1221 * 'addr' is INADDR_ANY, 'netdev''s IPv4 address is cleared. Returns a
1222 * positive errno value.
1225 netdev_bsd_set_in4(struct netdev *netdev_, struct in_addr addr,
1226 struct in_addr mask)
1228 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
1231 ovs_mutex_lock(&netdev->mutex);
1232 error = do_set_addr(netdev_, SIOCSIFADDR, "SIOCSIFADDR", addr);
1234 if (addr.s_addr != INADDR_ANY) {
1235 error = do_set_addr(netdev_, SIOCSIFNETMASK,
1236 "SIOCSIFNETMASK", mask);
1238 netdev->cache_valid |= VALID_IN4;
1240 netdev->netmask = mask;
1243 netdev_change_seq_changed(netdev_);
1245 ovs_mutex_unlock(&netdev->mutex);
1251 netdev_bsd_get_in6(const struct netdev *netdev_, struct in6_addr *in6)
1253 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
1254 if (!(netdev->cache_valid & VALID_IN6)) {
1255 struct ifaddrs *ifa, *head;
1256 struct sockaddr_in6 *sin6;
1257 const char *netdev_name = netdev_get_name(netdev_);
1259 if (getifaddrs(&head) != 0) {
1260 VLOG_ERR("getifaddrs on %s device failed: %s", netdev_name,
1261 ovs_strerror(errno));
1265 for (ifa = head; ifa; ifa = ifa->ifa_next) {
1266 if (ifa->ifa_addr->sa_family == AF_INET6 &&
1267 !strcmp(ifa->ifa_name, netdev_name)) {
1268 sin6 = ALIGNED_CAST(struct sockaddr_in6 *, ifa->ifa_addr);
1270 memcpy(&netdev->in6, &sin6->sin6_addr, sin6->sin6_len);
1271 netdev->cache_valid |= VALID_IN6;
1278 return EADDRNOTAVAIL;
1284 #if defined(__NetBSD__)
1286 netdev_bsd_kernel_name_to_ovs_name(const char *kernel_name)
1288 char *ovs_name = NULL;
1289 struct shash device_shash;
1290 struct shash_node *node;
1292 shash_init(&device_shash);
1293 netdev_get_devices(&netdev_tap_class, &device_shash);
1294 SHASH_FOR_EACH(node, &device_shash) {
1295 struct netdev *netdev = node->data;
1296 struct netdev_bsd * const dev = netdev_bsd_cast(netdev);
1298 if (!strcmp(dev->kernel_name, kernel_name)) {
1300 ovs_name = xstrdup(netdev_get_name(&dev->up));
1302 netdev_close(netdev);
1304 shash_destroy(&device_shash);
1306 return ovs_name ? ovs_name : xstrdup(kernel_name);
1311 netdev_bsd_get_next_hop(const struct in_addr *host OVS_UNUSED,
1312 struct in_addr *next_hop OVS_UNUSED,
1313 char **netdev_name OVS_UNUSED)
1315 #if defined(__NetBSD__)
1317 struct sockaddr_in sin;
1318 struct sockaddr_dl sdl;
1325 struct rt_msghdr *rtm = &buf.h;
1326 const pid_t pid = getpid();
1329 bool gateway = false;
1330 char *ifname = NULL;
1333 memset(next_hop, 0, sizeof(*next_hop));
1334 *netdev_name = NULL;
1336 memset(&sin, 0, sizeof(sin));
1337 sin.sin_len = sizeof(sin);
1338 sin.sin_family = AF_INET;
1340 sin.sin_addr = *host;
1342 memset(&sdl, 0, sizeof(sdl));
1343 sdl.sdl_len = sizeof(sdl);
1344 sdl.sdl_family = AF_LINK;
1346 s = socket(PF_ROUTE, SOCK_RAW, 0);
1347 memset(&buf, 0, sizeof(buf));
1348 rtm->rtm_flags = RTF_HOST|RTF_UP;
1349 rtm->rtm_version = RTM_VERSION;
1350 rtm->rtm_addrs = RTA_DST|RTA_IFP;
1351 cp = (void *)&buf.space;
1352 memcpy(cp, &sin, sizeof(sin));
1353 RT_ADVANCE(cp, (struct sockaddr *)(void *)&sin);
1354 memcpy(cp, &sdl, sizeof(sdl));
1355 RT_ADVANCE(cp, (struct sockaddr *)(void *)&sdl);
1356 rtm->rtm_msglen = cp - (char *)(void *)rtm;
1357 rtm->rtm_seq = ++seq;
1358 rtm->rtm_type = RTM_GET;
1360 write(s, rtm, rtm->rtm_msglen);
1361 memset(&buf, 0, sizeof(buf));
1363 ssz = read(s, &buf, sizeof(buf));
1364 } while (ssz > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid));
1365 saved_errno = errno;
1371 return EPIPE; /* XXX */
1373 cp = (void *)&buf.space;
1374 for (i = 1; i; i <<= 1) {
1375 if ((rtm->rtm_addrs & i) != 0) {
1376 const struct sockaddr *sa = (const void *)cp;
1378 if ((i == RTA_GATEWAY) && sa->sa_family == AF_INET) {
1379 const struct sockaddr_in * const sin =
1380 ALIGNED_CAST(const struct sockaddr_in *, sa);
1382 *next_hop = sin->sin_addr;
1385 if ((i == RTA_IFP) && sa->sa_family == AF_LINK) {
1386 const struct sockaddr_dl * const sdl =
1387 ALIGNED_CAST(const struct sockaddr_dl *, sa);
1390 kernel_name = xmemdup0(sdl->sdl_data, sdl->sdl_nlen);
1391 ifname = netdev_bsd_kernel_name_to_ovs_name(kernel_name);
1397 if (ifname == NULL) {
1403 *netdev_name = ifname;
1404 VLOG_DBG("host " IP_FMT " next-hop " IP_FMT " if %s",
1405 IP_ARGS(host->s_addr), IP_ARGS(next_hop->s_addr), *netdev_name);
1413 netdev_bsd_arp_lookup(const struct netdev *netdev OVS_UNUSED,
1414 ovs_be32 ip OVS_UNUSED,
1415 uint8_t mac[ETH_ADDR_LEN] OVS_UNUSED)
1417 #if defined(__NetBSD__)
1418 const struct rt_msghdr *rtm;
1431 mib[4] = NET_RT_FLAGS;
1432 mib[5] = RTF_LLINFO;
1433 if (sysctl(mib, 6, NULL, &needed, NULL, 0) == -1) {
1437 buf = xmalloc(needed);
1438 if (sysctl(mib, 6, buf, &needed, NULL, 0) == -1) {
1443 for (cp = buf; cp < ep; cp += rtm->rtm_msglen) {
1444 const struct sockaddr_inarp *sina;
1445 const struct sockaddr_dl *sdl;
1447 rtm = (const void *)cp;
1448 sina = (const void *)(rtm + 1);
1449 if (ip != sina->sin_addr.s_addr) {
1452 sdl = (const void *)
1453 ((const char *)(const void *)sina + RT_ROUNDUP(sina->sin_len));
1454 if (sdl->sdl_alen == ETH_ADDR_LEN) {
1455 memcpy(mac, &sdl->sdl_data[sdl->sdl_nlen], ETH_ADDR_LEN);
1470 make_in4_sockaddr(struct sockaddr *sa, struct in_addr addr)
1472 struct sockaddr_in sin;
1473 memset(&sin, 0, sizeof sin);
1474 sin.sin_family = AF_INET;
1475 sin.sin_addr = addr;
1478 memset(sa, 0, sizeof *sa);
1479 memcpy(sa, &sin, sizeof sin);
1483 do_set_addr(struct netdev *netdev,
1484 unsigned long ioctl_nr, const char *ioctl_name,
1485 struct in_addr addr)
1488 make_in4_sockaddr(&ifr.ifr_addr, addr);
1489 return af_inet_ifreq_ioctl(netdev_get_kernel_name(netdev), &ifr, ioctl_nr,
1494 nd_to_iff_flags(enum netdev_flags nd)
1497 if (nd & NETDEV_UP) {
1500 if (nd & NETDEV_PROMISC) {
1502 #if defined(IFF_PPROMISC)
1503 iff |= IFF_PPROMISC;
1506 if (nd & NETDEV_LOOPBACK) {
1507 iff |= IFF_LOOPBACK;
1513 iff_to_nd_flags(int iff)
1515 enum netdev_flags nd = 0;
1519 if (iff & IFF_PROMISC) {
1520 nd |= NETDEV_PROMISC;
1522 if (iff & IFF_LOOPBACK) {
1523 nd |= NETDEV_LOOPBACK;
1529 netdev_bsd_update_flags(struct netdev *netdev_, enum netdev_flags off,
1530 enum netdev_flags on, enum netdev_flags *old_flagsp)
1532 int old_flags, new_flags;
1535 error = get_flags(netdev_, &old_flags);
1537 *old_flagsp = iff_to_nd_flags(old_flags);
1538 new_flags = (old_flags & ~nd_to_iff_flags(off)) | nd_to_iff_flags(on);
1539 if (new_flags != old_flags) {
1540 error = set_flags(netdev_get_kernel_name(netdev_), new_flags);
1541 netdev_change_seq_changed(netdev_);
1547 /* Linux has also different GET_STATS, SET_STATS,
1550 #define NETDEV_BSD_CLASS(NAME, CONSTRUCT, \
1560 netdev_bsd_destruct, \
1561 netdev_bsd_dealloc, \
1562 NULL, /* get_config */ \
1563 NULL, /* set_config */ \
1564 NULL, /* get_tunnel_config */ \
1565 NULL, /* build header */ \
1566 NULL, /* push header */ \
1567 NULL, /* pop header */ \
1568 NULL, /* get_numa_id */ \
1569 NULL, /* set_multiq */ \
1572 netdev_bsd_send_wait, \
1574 netdev_bsd_set_etheraddr, \
1575 netdev_bsd_get_etheraddr, \
1576 netdev_bsd_get_mtu, \
1577 NULL, /* set_mtu */ \
1578 netdev_bsd_get_ifindex, \
1579 netdev_bsd_get_carrier, \
1580 NULL, /* get_carrier_resets */ \
1581 NULL, /* set_miimon_interval */ \
1582 netdev_bsd_get_stats, \
1585 NULL, /* set_advertisement */ \
1586 NULL, /* set_policing */ \
1587 NULL, /* get_qos_type */ \
1588 NULL, /* get_qos_capabilities */ \
1589 NULL, /* get_qos */ \
1590 NULL, /* set_qos */ \
1591 NULL, /* get_queue */ \
1592 NULL, /* set_queue */ \
1593 NULL, /* delete_queue */ \
1594 NULL, /* get_queue_stats */ \
1595 NULL, /* queue_dump_start */ \
1596 NULL, /* queue_dump_next */ \
1597 NULL, /* queue_dump_done */ \
1598 NULL, /* dump_queue_stats */ \
1600 netdev_bsd_get_in4, \
1601 netdev_bsd_set_in4, \
1602 netdev_bsd_get_in6, \
1603 NULL, /* add_router */ \
1604 netdev_bsd_get_next_hop, \
1605 NULL, /* get_status */ \
1606 netdev_bsd_arp_lookup, /* arp_lookup */ \
1608 netdev_bsd_update_flags, \
1610 netdev_bsd_rxq_alloc, \
1611 netdev_bsd_rxq_construct, \
1612 netdev_bsd_rxq_destruct, \
1613 netdev_bsd_rxq_dealloc, \
1614 netdev_bsd_rxq_recv, \
1615 netdev_bsd_rxq_wait, \
1616 netdev_bsd_rxq_drain, \
1619 const struct netdev_class netdev_bsd_class =
1622 netdev_bsd_construct_system,
1623 netdev_bsd_get_features);
1625 const struct netdev_class netdev_tap_class =
1628 netdev_bsd_construct_tap,
1629 netdev_bsd_get_features);
1633 destroy_tap(int fd, const char *name)
1638 strcpy(ifr.ifr_name, name);
1639 /* XXX What to do if this call fails? */
1640 af_inet_ioctl(SIOCIFDESTROY, &ifr);
1644 get_flags(const struct netdev *netdev, int *flags)
1649 error = af_inet_ifreq_ioctl(netdev_get_kernel_name(netdev), &ifr,
1650 SIOCGIFFLAGS, "SIOCGIFFLAGS");
1652 *flags = ifr_get_flags(&ifr);
1658 set_flags(const char *name, int flags)
1662 ifr_set_flags(&ifr, flags);
1664 return af_inet_ifreq_ioctl(name, &ifr, SIOCSIFFLAGS, "SIOCSIFFLAGS");
1668 get_ifindex(const struct netdev *netdev_, int *ifindexp)
1670 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
1672 if (!(netdev->cache_valid & VALID_IFINDEX)) {
1673 int ifindex = if_nametoindex(netdev_get_name(netdev_));
1677 netdev->cache_valid |= VALID_IFINDEX;
1678 netdev->ifindex = ifindex;
1680 *ifindexp = netdev->ifindex;
1685 get_etheraddr(const char *netdev_name, uint8_t ea[ETH_ADDR_LEN])
1687 struct ifaddrs *head;
1688 struct ifaddrs *ifa;
1689 struct sockaddr_dl *sdl;
1691 if (getifaddrs(&head) != 0) {
1692 VLOG_ERR("getifaddrs on %s device failed: %s", netdev_name,
1693 ovs_strerror(errno));
1697 for (ifa = head; ifa; ifa = ifa->ifa_next) {
1698 if (ifa->ifa_addr->sa_family == AF_LINK) {
1699 if (!strcmp(ifa->ifa_name, netdev_name)) {
1700 sdl = ALIGNED_CAST(struct sockaddr_dl *, ifa->ifa_addr);
1702 memcpy(ea, LLADDR(sdl), sdl->sdl_alen);
1710 VLOG_ERR("could not find ethernet address for %s device", netdev_name);
1716 set_etheraddr(const char *netdev_name OVS_UNUSED, int hwaddr_family OVS_UNUSED,
1717 int hwaddr_len OVS_UNUSED,
1718 const uint8_t mac[ETH_ADDR_LEN] OVS_UNUSED)
1720 #if defined(__FreeBSD__)
1724 memset(&ifr, 0, sizeof ifr);
1725 ovs_strlcpy(ifr.ifr_name, netdev_name, sizeof ifr.ifr_name);
1726 ifr.ifr_addr.sa_family = hwaddr_family;
1727 ifr.ifr_addr.sa_len = hwaddr_len;
1728 memcpy(ifr.ifr_addr.sa_data, mac, hwaddr_len);
1729 error = af_inet_ioctl(SIOCSIFLLADDR, &ifr);
1731 VLOG_ERR("ioctl(SIOCSIFLLADDR) on %s device failed: %s",
1732 netdev_name, ovs_strerror(error));
1736 #elif defined(__NetBSD__)
1737 struct if_laddrreq req;
1738 struct sockaddr_dl *sdl;
1739 struct sockaddr_storage oldaddr;
1743 * get the old address, add new one, and then remove old one.
1746 if (hwaddr_len != ETH_ADDR_LEN) {
1747 /* just to be safe about sockaddr storage size */
1750 memset(&req, 0, sizeof(req));
1751 ovs_strlcpy(req.iflr_name, netdev_name, sizeof(req.iflr_name));
1752 req.addr.ss_len = sizeof(req.addr);
1753 req.addr.ss_family = hwaddr_family;
1754 sdl = (struct sockaddr_dl *)&req.addr;
1755 sdl->sdl_alen = hwaddr_len;
1757 error = af_link_ioctl(SIOCGLIFADDR, &req);
1761 if (!memcmp(&sdl->sdl_data[sdl->sdl_nlen], mac, hwaddr_len)) {
1766 memset(&req, 0, sizeof(req));
1767 ovs_strlcpy(req.iflr_name, netdev_name, sizeof(req.iflr_name));
1768 req.flags = IFLR_ACTIVE;
1769 sdl = (struct sockaddr_dl *)&req.addr;
1770 sdl->sdl_len = offsetof(struct sockaddr_dl, sdl_data) + hwaddr_len;
1771 sdl->sdl_alen = hwaddr_len;
1772 sdl->sdl_family = hwaddr_family;
1773 memcpy(sdl->sdl_data, mac, hwaddr_len);
1774 error = af_link_ioctl(SIOCALIFADDR, &req);
1779 memset(&req, 0, sizeof(req));
1780 ovs_strlcpy(req.iflr_name, netdev_name, sizeof(req.iflr_name));
1782 return af_link_ioctl(SIOCDLIFADDR, &req);
1784 #error not implemented
1789 ifr_get_flags(const struct ifreq *ifr)
1791 #ifdef HAVE_STRUCT_IFREQ_IFR_FLAGSHIGH
1792 return (ifr->ifr_flagshigh << 16) | ifr->ifr_flags;
1794 return ifr->ifr_flags;
1799 ifr_set_flags(struct ifreq *ifr, int flags)
1801 ifr->ifr_flags = flags;
1802 #ifdef HAVE_STRUCT_IFREQ_IFR_FLAGSHIGH
1803 ifr->ifr_flagshigh = flags >> 16;
1807 #if defined(__NetBSD__)
1808 /* Calls ioctl() on an AF_LINK sock, passing the specified 'command' and
1809 * 'arg'. Returns 0 if successful, otherwise a positive errno value. */
1811 af_link_ioctl(unsigned long command, const void *arg)
1813 static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER;
1816 if (ovsthread_once_start(&once)) {
1817 sock = socket(AF_LINK, SOCK_DGRAM, 0);
1820 VLOG_ERR("failed to create link socket: %s", ovs_strerror(errno));
1822 ovsthread_once_done(&once);
1825 return (sock < 0 ? -sock
1826 : ioctl(sock, command, arg) == -1 ? errno