2 * Copyright (c) 2011 Gaetano Catalli.
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.
19 #include "netdev-provider.h"
23 #include <sys/types.h>
25 #include <sys/ioctl.h>
26 #include <sys/socket.h>
27 #include <sys/sockio.h>
29 #include <pcap/pcap.h>
31 #include <net/if_dl.h>
32 #include <net/if_media.h>
33 #include <net/if_tap.h>
34 #include <netinet/in.h>
35 #ifdef HAVE_NET_IF_MIB_H
36 #include <net/if_mib.h>
41 #include <sys/sysctl.h>
45 #include "dynamic-string.h"
46 #include "fatal-signal.h"
48 #include "openflow/openflow.h"
50 #include "poll-loop.h"
51 #include "socket-util.h"
57 VLOG_DEFINE_THIS_MODULE(netdev_bsd);
60 struct netdev_rx_bsd {
63 /* Packet capture descriptor for a system network device.
64 * For a tap device this is NULL. */
67 /* Selectable file descriptor for the network device.
68 * This descriptor will be used for polling operations. */
72 static const struct netdev_rx_class netdev_rx_bsd_class;
76 unsigned int cache_valid;
77 unsigned int change_seq;
80 uint8_t etheraddr[ETH_ADDR_LEN];
86 int tap_fd; /* TAP character device, if any, otherwise -1. */
88 /* Used for sending packets on non-tap devices. */
95 VALID_IFINDEX = 1 << 0,
96 VALID_ETHERADDR = 1 << 1,
100 VALID_CARRIER = 1 << 5
103 /* An AF_INET socket (used for ioctl operations). */
104 static int af_inet_sock = -1;
106 #define PCAP_SNAPLEN 2048
110 * Notifier used to invalidate device informations in case of status change.
112 * It will be registered with a 'rtbsd_notifier_register()' when the first
113 * device will be created with the call of either 'netdev_bsd_tap_create()' or
114 * 'netdev_bsd_system_create()'.
116 * The callback associated with this notifier ('netdev_bsd_cache_cb()') will
117 * invalidate cached information about the device.
119 static struct rtbsd_notifier netdev_bsd_cache_notifier;
120 static int cache_notifier_refcount;
122 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20);
124 static int netdev_bsd_do_ioctl(const char *, struct ifreq *, unsigned long cmd,
125 const char *cmd_name);
126 static void destroy_tap(int fd, const char *name);
127 static int get_flags(const struct netdev *, int *flagsp);
128 static int set_flags(const char *, int flags);
129 static int do_set_addr(struct netdev *netdev,
130 int ioctl_nr, const char *ioctl_name,
131 struct in_addr addr);
132 static int get_etheraddr(const char *netdev_name, uint8_t ea[ETH_ADDR_LEN]);
133 static int set_etheraddr(const char *netdev_name, int hwaddr_family,
134 int hwaddr_len, const uint8_t[ETH_ADDR_LEN]);
135 static int get_ifindex(const struct netdev *, int *ifindexp);
137 static int ifr_get_flags(const struct ifreq *);
138 static void ifr_set_flags(struct ifreq *, int flags);
140 static int netdev_bsd_init(void);
143 is_netdev_bsd_class(const struct netdev_class *netdev_class)
145 return netdev_class->init == netdev_bsd_init;
148 static struct netdev_bsd *
149 netdev_bsd_cast(const struct netdev *netdev)
151 ovs_assert(is_netdev_bsd_class(netdev_get_class(netdev)));
152 return CONTAINER_OF(netdev, struct netdev_bsd, up);
155 static struct netdev_rx_bsd *
156 netdev_rx_bsd_cast(const struct netdev_rx *rx)
158 netdev_rx_assert_class(rx, &netdev_rx_bsd_class);
159 return CONTAINER_OF(rx, struct netdev_rx_bsd, up);
162 /* Initialize the AF_INET socket used for ioctl operations */
164 netdev_bsd_init(void)
166 static int status = -1;
168 if (status >= 0) { /* already initialized */
172 af_inet_sock = socket(AF_INET, SOCK_DGRAM, 0);
173 status = af_inet_sock >= 0 ? 0 : errno;
176 VLOG_ERR("failed to create inet socket: %s", strerror(status));
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();
203 netdev_bsd_changed(struct netdev_bsd *dev)
206 if (!dev->change_seq) {
211 /* Invalidate cache in case of interface status change. */
213 netdev_bsd_cache_cb(const struct rtbsd_change *change,
214 void *aux OVS_UNUSED)
216 struct netdev_bsd *dev;
219 struct netdev *base_dev = netdev_from_name(change->if_name);
222 const struct netdev_class *netdev_class =
223 netdev_get_class(base_dev);
225 if (is_netdev_bsd_class(netdev_class)) {
226 dev = netdev_bsd_cast(base_dev);
227 dev->cache_valid = 0;
228 netdev_bsd_changed(dev);
233 * XXX the API is lacking, we should be able to iterate on the list of
234 * netdevs without having to store the info in a temp shash.
236 struct shash device_shash;
237 struct shash_node *node;
239 shash_init(&device_shash);
240 netdev_get_devices(&netdev_bsd_class, &device_shash);
241 SHASH_FOR_EACH (node, &device_shash) {
243 dev->cache_valid = 0;
244 netdev_bsd_changed(dev);
246 shash_destroy(&device_shash);
251 cache_notifier_ref(void)
255 if (!cache_notifier_refcount) {
256 ret = rtbsd_notifier_register(&netdev_bsd_cache_notifier,
257 netdev_bsd_cache_cb, NULL);
262 cache_notifier_refcount++;
267 cache_notifier_unref(void)
269 cache_notifier_refcount--;
270 if (cache_notifier_refcount == 0) {
271 rtbsd_notifier_unregister(&netdev_bsd_cache_notifier);
276 /* Allocate a netdev_bsd structure */
278 netdev_bsd_create_system(const struct netdev_class *class, const char *name,
279 struct netdev **netdevp)
281 struct netdev_bsd *netdev;
282 enum netdev_flags flags;
285 error = cache_notifier_ref();
290 netdev = xzalloc(sizeof *netdev);
291 netdev->change_seq = 1;
292 netdev_init(&netdev->up, name, class);
295 /* Verify that the netdev really exists by attempting to read its flags */
296 error = netdev_get_flags(&netdev->up, &flags);
297 if (error == ENXIO) {
298 netdev_uninit(&netdev->up, false);
300 cache_notifier_unref();
304 *netdevp = &netdev->up;
309 * Allocate a netdev_bsd structure with 'tap' class.
312 netdev_bsd_create_tap(const struct netdev_class *class, const char *name,
313 struct netdev **netdevp)
315 struct netdev_bsd *netdev = NULL;
319 error = cache_notifier_ref();
324 /* allocate the device structure and set the internal flag */
325 netdev = xzalloc(sizeof *netdev);
327 memset(&ifr, 0, sizeof(ifr));
329 /* Create a tap device by opening /dev/tap. The TAPGIFNAME ioctl is used
330 * to retrieve the name of the tap device. */
331 netdev->tap_fd = open("/dev/tap", O_RDWR);
332 netdev->change_seq = 1;
333 if (netdev->tap_fd < 0) {
335 VLOG_WARN("opening \"/dev/tap\" failed: %s", strerror(error));
336 goto error_undef_notifier;
339 /* Retrieve tap name (e.g. tap0) */
340 if (ioctl(netdev->tap_fd, TAPGIFNAME, &ifr) == -1) {
341 /* XXX Need to destroy the device? */
343 goto error_undef_notifier;
346 /* Change the name of the tap device */
347 #if defined(SIOCSIFNAME)
348 ifr.ifr_data = (void *)name;
349 if (ioctl(af_inet_sock, SIOCSIFNAME, &ifr) == -1) {
351 destroy_tap(netdev->tap_fd, ifr.ifr_name);
352 goto error_undef_notifier;
357 * NetBSD doesn't support inteface renaming.
359 VLOG_INFO("tap %s is created for bridge %s", ifr.ifr_name, name);
360 name = ifr.ifr_name; /* XXX */
363 /* set non-blocking. */
364 error = set_nonblocking(netdev->tap_fd);
366 destroy_tap(netdev->tap_fd, name);
367 goto error_undef_notifier;
371 ifr_set_flags(&ifr, IFF_UP);
372 strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
373 if (ioctl(af_inet_sock, SIOCSIFFLAGS, &ifr) == -1) {
375 destroy_tap(netdev->tap_fd, name);
376 goto error_undef_notifier;
379 /* initialize the device structure and
380 * link the structure to its netdev */
381 netdev_init(&netdev->up, name, class);
382 *netdevp = &netdev->up;
386 error_undef_notifier:
387 cache_notifier_unref();
394 netdev_bsd_destroy(struct netdev *netdev_)
396 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
398 cache_notifier_unref();
400 if (netdev->tap_fd >= 0) {
401 destroy_tap(netdev->tap_fd, netdev_get_name(netdev_));
404 pcap_close(netdev->pcap);
410 netdev_bsd_open_pcap(const char *name, pcap_t **pcapp, int *fdp)
412 char errbuf[PCAP_ERRBUF_SIZE];
418 /* Open the pcap device. The device is opened in non-promiscuous mode
419 * because the interface flags are manually set by the caller. */
421 pcap = pcap_open_live(name, PCAP_SNAPLEN, 0, 1000, errbuf);
423 VLOG_ERR_RL(&rl, "%s: pcap_open_live failed: %s", name, errbuf);
427 if (errbuf[0] != '\0') {
428 VLOG_WARN_RL(&rl, "%s: pcap_open_live: %s", name, errbuf);
431 /* Get the underlying fd. */
432 fd = pcap_get_selectable_fd(pcap);
434 VLOG_WARN_RL(&rl, "%s: no selectable file descriptor", name);
439 /* Set non-blocking mode. Also the BIOCIMMEDIATE ioctl must be called
440 * on the file descriptor returned by pcap_get_selectable_fd to achieve
441 * a real non-blocking behaviour.*/
442 error = pcap_setnonblock(pcap, 1, errbuf);
448 /* This call assure that reads return immediately upon packet
449 * reception. Otherwise, a read will block until either the kernel
450 * buffer becomes full or a timeout occurs. */
451 if (ioctl(fd, BIOCIMMEDIATE, &one) < 0 ) {
452 VLOG_ERR_RL(&rl, "ioctl(BIOCIMMEDIATE) on %s device failed: %s",
453 name, strerror(errno));
458 /* Capture only incoming packets. */
459 error = pcap_setdirection(pcap, PCAP_D_IN);
479 netdev_bsd_rx_open(struct netdev *netdev_, struct netdev_rx **rxp)
481 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
483 struct netdev_rx_bsd *rx;
487 if (!strcmp(netdev_get_type(netdev_), "tap")) {
491 int error = netdev_bsd_open_pcap(netdev_get_name(netdev_), &pcap, &fd);
496 netdev_bsd_changed(netdev);
499 rx = xmalloc(sizeof *rx);
500 netdev_rx_init(&rx->up, netdev_, &netdev_rx_bsd_class);
501 rx->pcap_handle = pcap;
509 netdev_rx_bsd_destroy(struct netdev_rx *rx_)
511 struct netdev_rx_bsd *rx = netdev_rx_bsd_cast(rx_);
513 if (rx->pcap_handle) {
514 pcap_close(rx->pcap_handle);
519 /* The recv callback of the netdev class returns the number of bytes of the
522 * This can be done by the pcap_next() function. Unfortunately pcap_next() does
523 * not make difference between a missing packet on the capture interface and
524 * an error during the file capture. We can use the pcap_dispatch() function
525 * instead, which is able to distinguish between errors and null packet.
527 * To make pcap_dispatch() returns the number of bytes read from the interface
528 * we need to define the following callback and argument.
537 * This callback will be executed on every captured packet.
539 * If the packet captured by pcap_dispatch() does not fit the pcap buffer,
540 * pcap returns a truncated packet and we follow this behavior.
542 * The argument args->retval is the packet size in bytes.
545 proc_pkt(u_char *args_, const struct pcap_pkthdr *hdr, const u_char *packet)
547 struct pcap_arg *args = (struct pcap_arg *)args_;
549 if (args->size < hdr->len) {
550 VLOG_WARN_RL(&rl, "packet truncated");
551 args->retval = args->size;
553 args->retval = hdr->len;
556 /* copy the packet to our buffer */
557 memcpy(args->data, packet, args->retval);
561 * This function attempts to receive a packet from the specified network
562 * device. It is assumed that the network device is a system device or a tap
563 * device opened as a system one. In this case the read operation is performed
567 netdev_rx_bsd_recv_pcap(struct netdev_rx_bsd *rx, void *data, size_t size)
572 /* prepare the pcap argument to store the packet */
577 ret = pcap_dispatch(rx->pcap_handle, 1, proc_pkt, (u_char *) &arg);
580 return arg.retval; /* arg.retval < 0 is handled in the caller */
583 if (errno == EINTR) {
593 * This function attempts to receive a packet from the specified network
594 * device. It is assumed that the network device is a tap device and
595 * 'rx->fd' is initialized with the tap file descriptor.
598 netdev_rx_bsd_recv_tap(struct netdev_rx_bsd *rx, void *data, size_t size)
601 ssize_t retval = read(rx->fd, data, size);
604 } else if (errno != EINTR) {
605 if (errno != EAGAIN) {
606 VLOG_WARN_RL(&rl, "error receiving Ethernet packet on %s: %s",
607 strerror(errno), netdev_rx_get_name(&rx->up));
616 netdev_rx_bsd_recv(struct netdev_rx *rx_, void *data, size_t size)
618 struct netdev_rx_bsd *rx = netdev_rx_bsd_cast(rx_);
620 return (rx->pcap_handle
621 ? netdev_rx_bsd_recv_pcap(rx, data, size)
622 : netdev_rx_bsd_recv_tap(rx, data, size));
626 * Registers with the poll loop to wake up from the next call to poll_block()
627 * when a packet is ready to be received with netdev_rx_recv() on 'rx'.
630 netdev_rx_bsd_wait(struct netdev_rx *rx_)
632 struct netdev_rx_bsd *rx = netdev_rx_bsd_cast(rx_);
634 poll_fd_wait(rx->fd, POLLIN);
637 /* Discards all packets waiting to be received from 'rx'. */
639 netdev_rx_bsd_drain(struct netdev_rx *rx_)
642 struct netdev_rx_bsd *rx = netdev_rx_bsd_cast(rx_);
644 strcpy(ifr.ifr_name, netdev_rx_get_name(rx_));
645 if (ioctl(rx->fd, BIOCFLUSH, &ifr) == -1) {
646 VLOG_DBG_RL(&rl, "%s: ioctl(BIOCFLUSH) failed: %s",
647 netdev_rx_get_name(rx_), strerror(errno));
654 * Send a packet on the specified network device. The device could be either a
655 * system or a tap device.
658 netdev_bsd_send(struct netdev *netdev_, const void *data, size_t size)
660 struct netdev_bsd *dev = netdev_bsd_cast(netdev_);
661 const char *name = netdev_get_name(netdev_);
663 if (dev->tap_fd < 0 && !dev->pcap) {
664 int error = netdev_bsd_open_pcap(name, &dev->pcap, &dev->fd);
672 if (dev->tap_fd >= 0) {
673 retval = write(dev->tap_fd, data, size);
675 retval = pcap_inject(dev->pcap, data, size);
678 if (errno == EINTR) {
680 } else if (errno != EAGAIN) {
681 VLOG_WARN_RL(&rl, "error sending Ethernet packet on %s: %s",
682 name, strerror(errno));
685 } else if (retval != size) {
686 VLOG_WARN_RL(&rl, "sent partial Ethernet packet (%zd bytes of "
687 "%zu) on %s", retval, size, name);
696 * Registers with the poll loop to wake up from the next call to poll_block()
697 * when the packet transmission queue has sufficient room to transmit a packet
698 * with netdev_send().
701 netdev_bsd_send_wait(struct netdev *netdev_)
703 struct netdev_bsd *dev = netdev_bsd_cast(netdev_);
705 if (dev->tap_fd >= 0) {
706 /* TAP device always accepts packets. */
707 poll_immediate_wake();
708 } else if (dev->pcap) {
709 poll_fd_wait(dev->fd, POLLOUT);
711 /* We haven't even tried to send a packet yet. */
712 poll_immediate_wake();
717 * Attempts to set 'netdev''s MAC address to 'mac'. Returns 0 if successful,
718 * otherwise a positive errno value.
721 netdev_bsd_set_etheraddr(struct netdev *netdev_,
722 const uint8_t mac[ETH_ADDR_LEN])
724 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
727 if (!(netdev->cache_valid & VALID_ETHERADDR)
728 || !eth_addr_equals(netdev->etheraddr, mac)) {
729 error = set_etheraddr(netdev_get_name(netdev_), AF_LINK, ETH_ADDR_LEN,
732 netdev->cache_valid |= VALID_ETHERADDR;
733 memcpy(netdev->etheraddr, mac, ETH_ADDR_LEN);
734 netdev_bsd_changed(netdev);
743 * Returns a pointer to 'netdev''s MAC address. The caller must not modify or
744 * free the returned buffer.
747 netdev_bsd_get_etheraddr(const struct netdev *netdev_,
748 uint8_t mac[ETH_ADDR_LEN])
750 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
752 if (!(netdev->cache_valid & VALID_ETHERADDR)) {
753 int error = get_etheraddr(netdev_get_name(netdev_),
758 netdev->cache_valid |= VALID_ETHERADDR;
760 memcpy(mac, netdev->etheraddr, ETH_ADDR_LEN);
766 * Returns the maximum size of transmitted (and received) packets on 'netdev',
767 * in bytes, not including the hardware header; thus, this is typically 1500
768 * bytes for Ethernet devices.
771 netdev_bsd_get_mtu(const struct netdev *netdev_, int *mtup)
773 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
775 if (!(netdev->cache_valid & VALID_MTU)) {
779 error = netdev_bsd_do_ioctl(netdev_get_name(netdev_), &ifr, SIOCGIFMTU,
784 netdev->mtu = ifr.ifr_mtu;
785 netdev->cache_valid |= VALID_MTU;
793 netdev_bsd_get_ifindex(const struct netdev *netdev)
797 error = get_ifindex(netdev, &ifindex);
798 return error ? -error : ifindex;
802 netdev_bsd_get_carrier(const struct netdev *netdev_, bool *carrier)
804 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
806 if (!(netdev->cache_valid & VALID_CARRIER)) {
807 struct ifmediareq ifmr;
809 memset(&ifmr, 0, sizeof(ifmr));
810 strncpy(ifmr.ifm_name, netdev_get_name(netdev_), sizeof ifmr.ifm_name);
812 if (ioctl(af_inet_sock, SIOCGIFMEDIA, &ifmr) == -1) {
813 VLOG_DBG_RL(&rl, "%s: ioctl(SIOCGIFMEDIA) failed: %s",
814 netdev_get_name(netdev_), strerror(errno));
818 netdev->carrier = (ifmr.ifm_status & IFM_ACTIVE) == IFM_ACTIVE;
819 netdev->cache_valid |= VALID_CARRIER;
821 /* If the interface doesn't report whether the media is active,
822 * just assume it is active. */
823 if ((ifmr.ifm_status & IFM_AVALID) == 0) {
824 netdev->carrier = true;
827 *carrier = netdev->carrier;
832 /* Retrieves current device stats for 'netdev'. */
834 netdev_bsd_get_stats(const struct netdev *netdev_ OVS_UNUSED,
835 struct netdev_stats *stats)
837 #if defined(__FreeBSD__)
841 struct ifmibdata ifmd;
846 mib[2] = NETLINK_GENERIC;
847 mib[3] = IFMIB_SYSTEM;
848 mib[4] = IFMIB_IFCOUNT;
850 len = sizeof(if_count);
852 if (sysctl(mib, 5, &if_count, &len, (void *)0, 0) == -1) {
853 VLOG_DBG_RL(&rl, "%s: sysctl failed: %s",
854 netdev_get_name(netdev_), strerror(errno));
858 mib[5] = IFDATA_GENERAL;
859 mib[3] = IFMIB_IFDATA;
861 for (i = 1; i <= if_count; i++) {
863 if (sysctl(mib, 6, &ifmd, &len, (void *)0, 0) == -1) {
864 VLOG_DBG_RL(&rl, "%s: sysctl failed: %s",
865 netdev_get_name(netdev_), strerror(errno));
867 } else if (!strcmp(ifmd.ifmd_name, netdev_get_name(netdev_))) {
868 stats->rx_packets = ifmd.ifmd_data.ifi_ipackets;
869 stats->tx_packets = ifmd.ifmd_data.ifi_opackets;
870 stats->rx_bytes = ifmd.ifmd_data.ifi_ibytes;
871 stats->tx_bytes = ifmd.ifmd_data.ifi_obytes;
872 stats->rx_errors = ifmd.ifmd_data.ifi_ierrors;
873 stats->tx_errors = ifmd.ifmd_data.ifi_oerrors;
874 stats->rx_dropped = ifmd.ifmd_data.ifi_iqdrops;
875 stats->tx_dropped = UINT64_MAX;
876 stats->multicast = ifmd.ifmd_data.ifi_imcasts;
877 stats->collisions = ifmd.ifmd_data.ifi_collisions;
879 stats->rx_length_errors = UINT64_MAX;
880 stats->rx_over_errors = UINT64_MAX;
881 stats->rx_crc_errors = UINT64_MAX;
882 stats->rx_frame_errors = UINT64_MAX;
883 stats->rx_fifo_errors = UINT64_MAX;
884 stats->rx_missed_errors = UINT64_MAX;
886 stats->tx_aborted_errors = UINT64_MAX;
887 stats->tx_carrier_errors = UINT64_MAX;
888 stats->tx_fifo_errors = UINT64_MAX;
889 stats->tx_heartbeat_errors = UINT64_MAX;
890 stats->tx_window_errors = UINT64_MAX;
898 memset(stats, 0, sizeof(*stats));
904 netdev_bsd_parse_media(int media)
906 uint32_t supported = 0;
907 bool half_duplex = media & IFM_HDX ? true : false;
909 switch (IFM_SUBTYPE(media)) {
914 supported |= half_duplex ? NETDEV_F_10MB_HD : NETDEV_F_10MB_FD;
915 supported |= NETDEV_F_COPPER;
919 supported |= half_duplex ? NETDEV_F_10MB_HD : NETDEV_F_10MB_FD;
920 supported |= NETDEV_F_FIBER;
927 supported |= half_duplex ? NETDEV_F_100MB_HD : NETDEV_F_100MB_FD;
928 supported |= NETDEV_F_COPPER;
932 supported |= half_duplex ? NETDEV_F_100MB_HD : NETDEV_F_100MB_FD;
933 supported |= NETDEV_F_FIBER;
938 supported |= half_duplex ? NETDEV_F_1GB_HD : NETDEV_F_1GB_FD;
939 supported |= NETDEV_F_COPPER;
944 supported |= half_duplex ? NETDEV_F_1GB_HD : NETDEV_F_1GB_FD;
945 supported |= NETDEV_F_FIBER;
949 supported |= NETDEV_F_10GB_FD;
950 supported |= NETDEV_F_COPPER;
955 supported |= NETDEV_F_10GB_FD;
956 supported |= NETDEV_F_FIBER;
963 if (IFM_SUBTYPE(media) == IFM_AUTO) {
964 supported |= NETDEV_F_AUTONEG;
967 if (media & IFM_ETH_FMASK) {
968 supported |= NETDEV_F_PAUSE;
976 * Stores the features supported by 'netdev' into each of '*current',
977 * '*advertised', '*supported', and '*peer' that are non-null. Each value is a
978 * bitmap of "enum ofp_port_features" bits, in host byte order. Returns 0 if
979 * successful, otherwise a positive errno value. On failure, all of the
980 * passed-in values are set to 0.
983 netdev_bsd_get_features(const struct netdev *netdev,
984 enum netdev_features *current, uint32_t *advertised,
985 enum netdev_features *supported, uint32_t *peer)
987 struct ifmediareq ifmr;
993 /* XXX Look into SIOCGIFCAP instead of SIOCGIFMEDIA */
995 memset(&ifmr, 0, sizeof(ifmr));
996 strncpy(ifmr.ifm_name, netdev_get_name(netdev), sizeof ifmr.ifm_name);
998 /* We make two SIOCGIFMEDIA ioctl calls. The first to determine the
999 * number of supported modes, and a second with a buffer to retrieve
1001 if (ioctl(af_inet_sock, SIOCGIFMEDIA, &ifmr) == -1) {
1002 VLOG_DBG_RL(&rl, "%s: ioctl(SIOCGIFMEDIA) failed: %s",
1003 netdev_get_name(netdev), strerror(errno));
1007 media_list = xcalloc(ifmr.ifm_count, sizeof(int));
1008 ifmr.ifm_ulist = media_list;
1010 if (IFM_TYPE(ifmr.ifm_current) != IFM_ETHER) {
1011 VLOG_DBG_RL(&rl, "%s: doesn't appear to be ethernet",
1012 netdev_get_name(netdev));
1017 if (ioctl(af_inet_sock, SIOCGIFMEDIA, &ifmr) == -1) {
1018 VLOG_DBG_RL(&rl, "%s: ioctl(SIOCGIFMEDIA) failed: %s",
1019 netdev_get_name(netdev), strerror(errno));
1024 /* Current settings. */
1025 *current = netdev_bsd_parse_media(ifmr.ifm_active);
1027 /* Advertised features. */
1028 *advertised = netdev_bsd_parse_media(ifmr.ifm_current);
1030 /* Supported features. */
1032 for (i = 0; i < ifmr.ifm_count; i++) {
1033 *supported |= netdev_bsd_parse_media(ifmr.ifm_ulist[i]);
1036 /* Peer advertisements. */
1037 *peer = 0; /* XXX */
1046 * If 'netdev' has an assigned IPv4 address, sets '*in4' to that address (if
1047 * 'in4' is non-null) and returns true. Otherwise, returns false.
1050 netdev_bsd_get_in4(const struct netdev *netdev_, struct in_addr *in4,
1051 struct in_addr *netmask)
1053 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
1055 if (!(netdev->cache_valid & VALID_IN4)) {
1056 const struct sockaddr_in *sin;
1060 ifr.ifr_addr.sa_family = AF_INET;
1061 error = netdev_bsd_do_ioctl(netdev_get_name(netdev_), &ifr,
1062 SIOCGIFADDR, "SIOCGIFADDR");
1067 sin = (struct sockaddr_in *) &ifr.ifr_addr;
1068 netdev->in4 = sin->sin_addr;
1069 netdev->cache_valid |= VALID_IN4;
1070 error = netdev_bsd_do_ioctl(netdev_get_name(netdev_), &ifr,
1071 SIOCGIFNETMASK, "SIOCGIFNETMASK");
1075 *netmask = ((struct sockaddr_in*)&ifr.ifr_addr)->sin_addr;
1079 return in4->s_addr == INADDR_ANY ? EADDRNOTAVAIL : 0;
1083 * Assigns 'addr' as 'netdev''s IPv4 address and 'mask' as its netmask. If
1084 * 'addr' is INADDR_ANY, 'netdev''s IPv4 address is cleared. Returns a
1085 * positive errno value.
1088 netdev_bsd_set_in4(struct netdev *netdev_, struct in_addr addr,
1089 struct in_addr mask)
1091 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
1094 error = do_set_addr(netdev_, SIOCSIFADDR, "SIOCSIFADDR", addr);
1096 netdev->cache_valid |= VALID_IN4;
1098 if (addr.s_addr != INADDR_ANY) {
1099 error = do_set_addr(netdev_, SIOCSIFNETMASK,
1100 "SIOCSIFNETMASK", mask);
1102 netdev_bsd_changed(netdev);
1108 netdev_bsd_get_in6(const struct netdev *netdev_, struct in6_addr *in6)
1110 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
1111 if (!(netdev->cache_valid & VALID_IN6)) {
1112 struct ifaddrs *ifa, *head;
1113 struct sockaddr_in6 *sin6;
1114 const char *netdev_name = netdev_get_name(netdev_);
1116 if (getifaddrs(&head) != 0) {
1117 VLOG_ERR("getifaddrs on %s device failed: %s", netdev_name,
1122 for (ifa = head; ifa; ifa = ifa->ifa_next) {
1123 if (ifa->ifa_addr->sa_family == AF_INET6 &&
1124 !strcmp(ifa->ifa_name, netdev_name)) {
1125 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
1127 memcpy(&netdev->in6, &sin6->sin6_addr, sin6->sin6_len);
1128 netdev->cache_valid |= VALID_IN6;
1135 return EADDRNOTAVAIL;
1142 make_in4_sockaddr(struct sockaddr *sa, struct in_addr addr)
1144 struct sockaddr_in sin;
1145 memset(&sin, 0, sizeof sin);
1146 sin.sin_family = AF_INET;
1147 sin.sin_addr = addr;
1150 memset(sa, 0, sizeof *sa);
1151 memcpy(sa, &sin, sizeof sin);
1155 do_set_addr(struct netdev *netdev,
1156 int ioctl_nr, const char *ioctl_name, struct in_addr addr)
1159 make_in4_sockaddr(&ifr.ifr_addr, addr);
1160 return netdev_bsd_do_ioctl(netdev, &ifr, ioctl_nr, ioctl_name);
1164 nd_to_iff_flags(enum netdev_flags nd)
1167 if (nd & NETDEV_UP) {
1170 if (nd & NETDEV_PROMISC) {
1172 #if defined(IFF_PPROMISC)
1173 iff |= IFF_PPROMISC;
1180 iff_to_nd_flags(int iff)
1182 enum netdev_flags nd = 0;
1186 if (iff & IFF_PROMISC) {
1187 nd |= NETDEV_PROMISC;
1193 netdev_bsd_update_flags(struct netdev *netdev_, enum netdev_flags off,
1194 enum netdev_flags on, enum netdev_flags *old_flagsp)
1196 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
1197 int old_flags, new_flags;
1200 error = get_flags(netdev_, &old_flags);
1202 *old_flagsp = iff_to_nd_flags(old_flags);
1203 new_flags = (old_flags & ~nd_to_iff_flags(off)) | nd_to_iff_flags(on);
1204 if (new_flags != old_flags) {
1205 error = set_flags(netdev_get_name(netdev_), new_flags);
1206 netdev_bsd_changed(netdev);
1213 netdev_bsd_change_seq(const struct netdev *netdev)
1215 return netdev_bsd_cast(netdev)->change_seq;
1219 const struct netdev_class netdev_bsd_class = {
1225 netdev_bsd_create_system,
1227 NULL, /* get_config */
1228 NULL, /* set_config */
1229 NULL, /* get_tunnel_config */
1234 netdev_bsd_send_wait,
1236 netdev_bsd_set_etheraddr,
1237 netdev_bsd_get_etheraddr,
1240 netdev_bsd_get_ifindex,
1241 netdev_bsd_get_carrier,
1242 NULL, /* get_carrier_resets */
1243 NULL, /* set_miimon_interval */
1244 netdev_bsd_get_stats,
1245 NULL, /* set_stats */
1247 netdev_bsd_get_features,
1248 NULL, /* set_advertisement */
1249 NULL, /* set_policing */
1250 NULL, /* get_qos_type */
1251 NULL, /* get_qos_capabilities */
1254 NULL, /* get_queue */
1255 NULL, /* set_queue */
1256 NULL, /* delete_queue */
1257 NULL, /* get_queue_stats */
1258 NULL, /* dump_queue */
1259 NULL, /* dump_queue_stats */
1264 NULL, /* add_router */
1265 NULL, /* get_next_hop */
1266 NULL, /* get_status */
1267 NULL, /* arp_lookup */
1269 netdev_bsd_update_flags,
1271 netdev_bsd_change_seq
1274 const struct netdev_class netdev_tap_class = {
1280 netdev_bsd_create_tap,
1282 NULL, /* get_config */
1283 NULL, /* set_config */
1284 NULL, /* get_tunnel_config */
1289 netdev_bsd_send_wait,
1291 netdev_bsd_set_etheraddr,
1292 netdev_bsd_get_etheraddr,
1295 netdev_bsd_get_ifindex,
1296 netdev_bsd_get_carrier,
1297 NULL, /* get_carrier_resets */
1298 NULL, /* set_miimon_interval */
1299 netdev_bsd_get_stats,
1300 NULL, /* set_stats */
1302 netdev_bsd_get_features,
1303 NULL, /* set_advertisement */
1304 NULL, /* set_policing */
1305 NULL, /* get_qos_type */
1306 NULL, /* get_qos_capabilities */
1309 NULL, /* get_queue */
1310 NULL, /* set_queue */
1311 NULL, /* delete_queue */
1312 NULL, /* get_queue_stats */
1313 NULL, /* dump_queue */
1314 NULL, /* dump_queue_stats */
1319 NULL, /* add_router */
1320 NULL, /* get_next_hop */
1321 NULL, /* get_status */
1322 NULL, /* arp_lookup */
1324 netdev_bsd_update_flags,
1326 netdev_bsd_change_seq
1329 static const struct netdev_rx_class netdev_rx_bsd_class = {
1330 netdev_rx_bsd_destroy,
1333 netdev_rx_bsd_drain,
1338 destroy_tap(int fd, const char *name)
1343 strcpy(ifr.ifr_name, name);
1344 /* XXX What to do if this call fails? */
1345 ioctl(af_inet_sock, SIOCIFDESTROY, &ifr);
1349 get_flags(const struct netdev *netdev, int *flags)
1354 error = netdev_bsd_do_ioctl(netdev->name, &ifr,
1355 SIOCGIFFLAGS, "SIOCGIFFLAGS");
1357 *flags = ifr_get_flags(&ifr);
1363 set_flags(const char *name, int flags)
1367 ifr_set_flags(&ifr, flags);
1369 return netdev_bsd_do_ioctl(name, &ifr, SIOCSIFFLAGS, "SIOCSIFFLAGS");
1373 get_ifindex(const struct netdev *netdev_, int *ifindexp)
1375 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
1377 if (!(netdev->cache_valid & VALID_IFINDEX)) {
1378 int ifindex = if_nametoindex(netdev_get_name(netdev_));
1382 netdev->cache_valid |= VALID_IFINDEX;
1383 netdev->ifindex = ifindex;
1385 *ifindexp = netdev->ifindex;
1390 get_etheraddr(const char *netdev_name, uint8_t ea[ETH_ADDR_LEN])
1392 struct ifaddrs *head;
1393 struct ifaddrs *ifa;
1394 struct sockaddr_dl *sdl;
1396 if (getifaddrs(&head) != 0) {
1397 VLOG_ERR("getifaddrs on %s device failed: %s", netdev_name,
1402 for (ifa = head; ifa; ifa = ifa->ifa_next) {
1403 if (ifa->ifa_addr->sa_family == AF_LINK) {
1404 if (!strcmp(ifa->ifa_name, netdev_name)) {
1405 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
1407 memcpy(ea, LLADDR(sdl), sdl->sdl_alen);
1415 VLOG_ERR("could not find ethernet address for %s device", netdev_name);
1421 set_etheraddr(const char *netdev_name OVS_UNUSED, int hwaddr_family OVS_UNUSED,
1422 int hwaddr_len OVS_UNUSED,
1423 const uint8_t mac[ETH_ADDR_LEN] OVS_UNUSED)
1425 #if defined(__NetBSD__)
1426 return ENOTSUP; /* XXX */
1430 memset(&ifr, 0, sizeof ifr);
1431 strncpy(ifr.ifr_name, netdev_name, sizeof ifr.ifr_name);
1432 ifr.ifr_addr.sa_family = hwaddr_family;
1433 ifr.ifr_addr.sa_len = hwaddr_len;
1434 memcpy(ifr.ifr_addr.sa_data, mac, hwaddr_len);
1435 if (ioctl(af_inet_sock, SIOCSIFLLADDR, &ifr) < 0) {
1436 VLOG_ERR("ioctl(SIOCSIFLLADDR) on %s device failed: %s",
1437 netdev_name, strerror(errno));
1445 netdev_bsd_do_ioctl(const char *name, struct ifreq *ifr, unsigned long cmd,
1446 const char *cmd_name)
1448 strncpy(ifr->ifr_name, name, sizeof ifr->ifr_name);
1449 if (ioctl(af_inet_sock, cmd, ifr) == -1) {
1450 VLOG_DBG_RL(&rl, "%s: ioctl(%s) failed: %s", name, cmd_name,
1458 ifr_get_flags(const struct ifreq *ifr)
1460 #ifdef HAVE_STRUCT_IFREQ_IFR_FLAGSHIGH
1461 return (ifr.ifr_flagshigh << 16) | ifr.ifr_flags;
1463 return ifr.ifr_flags;
1468 ifr_set_flags(struct ifreq *ifr, int flags)
1470 ifr->ifr_flags = flags;
1471 #ifdef HAVE_STRUCT_IFREQ_IFR_FLAGSHIGH
1472 ifr->ifr_flagshigh = flags >> 16;