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.
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 #include <net/if_mib.h>
39 #include <sys/sysctl.h>
43 #include "dynamic-string.h"
44 #include "fatal-signal.h"
45 #include "netdev-provider.h"
47 #include "openflow/openflow.h"
49 #include "poll-loop.h"
50 #include "socket-util.h"
55 VLOG_DEFINE_THIS_MODULE(netdev_bsd);
59 * This file implements objects to access interfaces.
60 * Externally, interfaces are represented by two structures:
61 * + struct netdev_dev, representing a network device,
62 * containing e.g. name and a refcount;
63 * We can have private variables by embedding the
64 * struct netdev_dev into our own structure
65 * (e.g. netdev_dev_bsd)
67 * + struct netdev, representing an instance of an open netdev_dev.
68 * The structure contains a pointer to the 'struct netdev'
69 * representing the device. Again, private information
70 * such as file descriptor etc. are stored in our
71 * own struct netdev_bsd which includes a struct netdev.
73 * Both 'struct netdev' and 'struct netdev_dev' are referenced
74 * in containers which hold pointers to the data structures.
75 * We can reach our own struct netdev_XXX_bsd by putting a
76 * struct netdev_XXX within our own struct, and using CONTAINER_OF
77 * to access the parent structure.
82 int netdev_fd; /* Selectable file descriptor for the network device.
83 This descriptor will be used for polling operations */
85 pcap_t *pcap_handle; /* Packet capture descriptor for a system network
89 struct netdev_dev_bsd {
90 struct netdev_dev netdev_dev;
91 unsigned int cache_valid;
92 unsigned int change_seq;
95 uint8_t etheraddr[ETH_ADDR_LEN];
102 int tap_fd; /* TAP character device, if any */
107 VALID_IFINDEX = 1 << 0,
108 VALID_ETHERADDR = 1 << 1,
112 VALID_CARRIER = 1 << 5
115 /* An AF_INET socket (used for ioctl operations). */
116 static int af_inet_sock = -1;
118 #define PCAP_SNAPLEN 2048
122 * Notifier used to invalidate device informations in case of status change.
124 * It will be registered with a 'rtbsd_notifier_register()' when the first
125 * device will be created with the call of either 'netdev_bsd_tap_create()' or
126 * 'netdev_bsd_system_create()'.
128 * The callback associated with this notifier ('netdev_bsd_cache_cb()') will
129 * invalidate cached information about the device.
131 static struct rtbsd_notifier netdev_bsd_cache_notifier;
132 static int cache_notifier_refcount;
134 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20);
136 static int netdev_bsd_do_ioctl(const struct netdev *, struct ifreq *,
137 unsigned long cmd, const char *cmd_name);
138 static void destroy_tap(int fd, const char *name);
139 static int get_flags(const struct netdev *, int *flagsp);
140 static int set_flags(struct netdev *, int flags);
141 static int do_set_addr(struct netdev *netdev,
142 int ioctl_nr, const char *ioctl_name,
143 struct in_addr addr);
144 static int get_etheraddr(const char *netdev_name, uint8_t ea[ETH_ADDR_LEN]);
145 static int set_etheraddr(const char *netdev_name, int hwaddr_family,
146 int hwaddr_len, const uint8_t[ETH_ADDR_LEN]);
147 static int get_ifindex(const struct netdev *, int *ifindexp);
149 static int netdev_bsd_init(void);
152 is_netdev_bsd_class(const struct netdev_class *netdev_class)
154 return netdev_class->init == netdev_bsd_init;
157 static struct netdev_bsd *
158 netdev_bsd_cast(const struct netdev *netdev)
160 assert(is_netdev_bsd_class(netdev_dev_get_class(netdev_get_dev(netdev))));
161 return CONTAINER_OF(netdev, struct netdev_bsd, netdev);
164 static struct netdev_dev_bsd *
165 netdev_dev_bsd_cast(const struct netdev_dev *netdev_dev)
167 assert(is_netdev_bsd_class(netdev_dev_get_class(netdev_dev)));
168 return CONTAINER_OF(netdev_dev, struct netdev_dev_bsd, netdev_dev);
171 /* Initialize the AF_INET socket used for ioctl operations */
173 netdev_bsd_init(void)
175 static int status = -1;
177 if (status >= 0) { /* already initialized */
181 af_inet_sock = socket(AF_INET, SOCK_DGRAM, 0);
182 status = af_inet_sock >= 0 ? 0 : errno;
185 VLOG_ERR("failed to create inet socket: %s", strerror(status));
192 * Perform periodic work needed by netdev. In BSD netdevs it checks for any
193 * interface status changes, and eventually calls all the user callbacks.
198 rtbsd_notifier_run();
202 * Arranges for poll_block() to wake up if the "run" member function needs to
206 netdev_bsd_wait(void)
208 rtbsd_notifier_wait();
212 netdev_dev_bsd_changed(struct netdev_dev_bsd *dev)
215 if (!dev->change_seq) {
220 /* Invalidate cache in case of interface status change. */
222 netdev_bsd_cache_cb(const struct rtbsd_change *change,
223 void *aux OVS_UNUSED)
225 struct netdev_dev_bsd *dev;
228 struct netdev_dev *base_dev = netdev_dev_from_name(change->if_name);
231 const struct netdev_class *netdev_class =
232 netdev_dev_get_class(base_dev);
234 if (is_netdev_bsd_class(netdev_class)) {
235 dev = netdev_dev_bsd_cast(base_dev);
236 dev->cache_valid = 0;
237 netdev_dev_bsd_changed(dev);
242 * XXX the API is lacking, we should be able to iterate on the list of
243 * netdevs without having to store the info in a temp shash.
245 struct shash device_shash;
246 struct shash_node *node;
248 shash_init(&device_shash);
249 netdev_dev_get_devices(&netdev_bsd_class, &device_shash);
250 SHASH_FOR_EACH (node, &device_shash) {
252 dev->cache_valid = 0;
253 netdev_dev_bsd_changed(dev);
255 shash_destroy(&device_shash);
260 cache_notifier_ref(void)
264 if (!cache_notifier_refcount) {
265 ret = rtbsd_notifier_register(&netdev_bsd_cache_notifier,
266 netdev_bsd_cache_cb, NULL);
271 cache_notifier_refcount++;
276 cache_notifier_unref(void)
278 cache_notifier_refcount--;
279 if (cache_notifier_refcount == 0) {
280 rtbsd_notifier_unregister(&netdev_bsd_cache_notifier);
285 /* Allocate a netdev_dev_bsd structure */
287 netdev_bsd_create_system(const struct netdev_class *class, const char *name,
288 struct netdev_dev **netdev_devp)
290 struct netdev_dev_bsd *netdev_dev;
293 error = cache_notifier_ref();
298 netdev_dev = xzalloc(sizeof *netdev_dev);
299 netdev_dev->change_seq = 1;
300 netdev_dev_init(&netdev_dev->netdev_dev, name, class);
301 *netdev_devp = &netdev_dev->netdev_dev;
307 * Allocate a netdev_dev_bsd structure with 'tap' class.
310 netdev_bsd_create_tap(const struct netdev_class *class, const char *name,
311 struct netdev_dev **netdev_devp)
313 struct netdev_dev_bsd *netdev_dev = NULL;
317 error = cache_notifier_ref();
322 /* allocate the device structure and set the internal flag */
323 netdev_dev = xzalloc(sizeof *netdev_dev);
325 memset(&ifr, 0, sizeof(ifr));
327 /* Create a tap device by opening /dev/tap. The TAPGIFNAME ioctl is used
328 * to retrieve the name of the tap device. */
329 netdev_dev->tap_fd = open("/dev/tap", O_RDWR);
330 netdev_dev->change_seq = 1;
331 if (netdev_dev->tap_fd < 0) {
333 VLOG_WARN("opening \"/dev/tap\" failed: %s", strerror(error));
334 goto error_undef_notifier;
337 /* Retrieve tap name (e.g. tap0) */
338 if (ioctl(netdev_dev->tap_fd, TAPGIFNAME, &ifr) == -1) {
339 /* XXX Need to destroy the device? */
341 goto error_undef_notifier;
344 /* Change the name of the tap device */
345 ifr.ifr_data = (void *)name;
346 if (ioctl(af_inet_sock, SIOCSIFNAME, &ifr) == -1) {
348 destroy_tap(netdev_dev->tap_fd, ifr.ifr_name);
349 goto error_undef_notifier;
352 /* set non-blocking. */
353 error = set_nonblocking(netdev_dev->tap_fd);
355 destroy_tap(netdev_dev->tap_fd, name);
356 goto error_undef_notifier;
360 ifr.ifr_flags = (uint16_t)IFF_UP;
361 ifr.ifr_flagshigh = 0;
362 strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
363 if (ioctl(af_inet_sock, SIOCSIFFLAGS, &ifr) == -1) {
365 destroy_tap(netdev_dev->tap_fd, name);
366 goto error_undef_notifier;
369 /* initialize the device structure and
370 * link the structure to its netdev */
371 netdev_dev_init(&netdev_dev->netdev_dev, name, class);
372 *netdev_devp = &netdev_dev->netdev_dev;
376 error_undef_notifier:
377 cache_notifier_unref();
384 netdev_bsd_destroy(struct netdev_dev *netdev_dev_)
386 struct netdev_dev_bsd *netdev_dev = netdev_dev_bsd_cast(netdev_dev_);
388 cache_notifier_unref();
390 if (netdev_dev->tap_fd >= 0 &&
391 !strcmp(netdev_dev_get_type(netdev_dev_), "tap")) {
392 destroy_tap(netdev_dev->tap_fd, netdev_dev_get_name(netdev_dev_));
399 netdev_bsd_open_system(struct netdev_dev *netdev_dev_, struct netdev **netdevp)
401 struct netdev_dev_bsd *netdev_dev = netdev_dev_bsd_cast(netdev_dev_);
402 struct netdev_bsd *netdev;
404 enum netdev_flags flags;
406 /* Allocate network device. */
407 netdev = xcalloc(1, sizeof *netdev);
408 netdev->netdev_fd = -1;
409 netdev_init(&netdev->netdev, netdev_dev_);
411 /* Verify that the netdev really exists by attempting to read its flags */
412 error = netdev_get_flags(&netdev->netdev, &flags);
413 if (error == ENXIO) {
417 /* The first user that opens a tap port(from dpif_create_and_open()) will
418 * receive the file descriptor associated with the tap device. Instead, the
419 * following users will open the tap device as a normal 'system' device. */
420 if (!strcmp(netdev_dev_get_type(netdev_dev_), "tap") &&
421 !netdev_dev->tap_opened) {
422 netdev_dev->tap_opened = true;
423 netdev->netdev_fd = netdev_dev->tap_fd;
426 *netdevp = &netdev->netdev;
430 netdev_uninit(&netdev->netdev, true);
436 /* Close a 'netdev'. */
438 netdev_bsd_close(struct netdev *netdev_)
440 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
442 if (netdev->netdev_fd >= 0 && strcmp(netdev_get_type(netdev_), "tap")) {
443 pcap_close(netdev->pcap_handle);
450 netdev_bsd_listen(struct netdev *netdev_)
452 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
453 char errbuf[PCAP_ERRBUF_SIZE];
458 if (netdev->netdev_fd >= 0) {
462 /* open the pcap device. The device is opened in non-promiscuous mode
463 * because the interface flags are manually set by the caller. */
465 netdev->pcap_handle = pcap_open_live(netdev_get_name(netdev_), PCAP_SNAPLEN,
467 if (netdev->pcap_handle == NULL) {
468 VLOG_ERR("%s: pcap_open_live failed: %s",
469 netdev_get_name(netdev_), errbuf);
472 } else if (errbuf[0] != '\0') {
473 VLOG_WARN("%s: pcap_open_live: %s",
474 netdev_get_name(netdev_), errbuf);
477 netdev_dev_bsd_changed(netdev_dev_bsd_cast(netdev_get_dev(netdev_)));
479 /* initialize netdev->netdev_fd */
480 fd = pcap_get_selectable_fd(netdev->pcap_handle);
486 /* Set non-blocking mode. Also the BIOCIMMEDIATE ioctl must be called
487 * on the file descriptor returned by pcap_get_selectable_fd to achieve
488 * a real non-blocking behaviour.*/
489 error = pcap_setnonblock(netdev->pcap_handle, 1, errbuf);
495 /* This call assure that reads return immediately upon packet reception.
496 * Otherwise, a read will block until either the kernel buffer becomes
497 * full or a timeout occurs. */
498 if(ioctl(fd, BIOCIMMEDIATE, &one) < 0 ) {
499 VLOG_ERR("ioctl(BIOCIMMEDIATE) on %s device failed: %s",
500 netdev_get_name(netdev_), strerror(errno));
505 /* Capture only incoming packets */
506 error = pcap_setdirection(netdev->pcap_handle, PCAP_D_IN);
512 netdev->netdev_fd = fd;
517 close(netdev->netdev_fd);
523 /* The recv callback of the netdev class returns the number of bytes of the
526 * This can be done by the pcap_next() function. Unfortunately pcap_next() does
527 * not make difference between a missing packet on the capture interface and
528 * an error during the file capture. We can use the pcap_dispatch() function
529 * instead, which is able to distinguish between errors and null packet.
531 * To make pcap_dispatch() returns the number of bytes read from the interface
532 * we need to define the following callback and argument.
541 * This callback will be executed on every captured packet.
543 * If the packet captured by pcap_dispatch() does not fit the pcap buffer,
544 * pcap returns a truncated packet and we follow this behavior.
546 * The argument args->retval is the packet size in bytes.
549 proc_pkt(u_char *args_, const struct pcap_pkthdr *hdr, const u_char *packet)
551 struct pcap_arg *args = (struct pcap_arg *)args_;
553 if (args->size < hdr->len) {
554 VLOG_WARN_RL(&rl, "packet truncated");
555 args->retval = args->size;
557 args->retval = hdr->len;
560 /* copy the packet to our buffer */
561 memcpy(args->data, packet, args->retval);
565 * This function attempts to receive a packet from the specified network
566 * device. It is assumed that the network device is a system device or a tap
567 * device opened as a system one. In this case the read operation is performed
568 * on the 'netdev' pcap descriptor.
571 netdev_bsd_recv_system(struct netdev_bsd *netdev, void *data, size_t size)
576 if (netdev->netdev_fd < 0) {
580 /* prepare the pcap argument to store the packet */
585 ret = pcap_dispatch(netdev->pcap_handle, 1, proc_pkt, (u_char *)&arg);
588 return arg.retval; /* arg.retval < 0 is handled in the caller */
591 if (errno == EINTR) {
601 * This function attempts to receive a packet from the specified network
602 * device. It is assumed that the network device is a tap device and the
603 * 'netdev_fd' member of the 'netdev' structure is initialized with the tap
607 netdev_bsd_recv_tap(struct netdev_bsd *netdev, void *data, size_t size)
609 if (netdev->netdev_fd < 0) {
614 ssize_t retval = read(netdev->netdev_fd, data, size);
617 } else if (errno != EINTR) {
618 if (errno != EAGAIN) {
619 VLOG_WARN_RL(&rl, "error receiving Ethernet packet on %s: %s",
620 strerror(errno), netdev->netdev.netdev_dev->name);
629 * According with the nature of the device a different function must be called.
630 * If the device is the bridge local port the 'netdev_bsd_recv_tap' function
631 * must be called, otherwise the 'netdev_bsd_recv_system' function is called.
633 * type!="tap" ---> system device.
634 * type=="tap" && netdev_fd == tap_fd ---> internal tap device
635 * type=="tap" && netdev_fd != tap_fd ---> internal tap device
640 netdev_bsd_recv(struct netdev *netdev_, void* data, size_t size)
642 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
643 struct netdev_dev_bsd * netdev_dev =
644 netdev_dev_bsd_cast(netdev_get_dev(netdev_));
646 if (!strcmp(netdev_get_type(netdev_), "tap") &&
647 netdev->netdev_fd == netdev_dev->tap_fd) {
648 return netdev_bsd_recv_tap(netdev, data, size);
650 return netdev_bsd_recv_system(netdev, data, size);
656 * Registers with the poll loop to wake up from the next call to poll_block()
657 * when a packet is ready to be received with netdev_recv() on 'netdev'.
660 netdev_bsd_recv_wait(struct netdev *netdev_)
662 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
664 if (netdev->netdev_fd >= 0) {
665 poll_fd_wait(netdev->netdev_fd, POLLIN);
669 /* Discards all packets waiting to be received from 'netdev'. */
671 netdev_bsd_drain(struct netdev *netdev_)
674 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
676 strcpy(ifr.ifr_name, netdev_get_name(netdev_));
677 if (ioctl(netdev->netdev_fd, BIOCFLUSH, &ifr) == -1) {
678 VLOG_DBG_RL(&rl, "%s: ioctl(BIOCFLUSH) failed: %s",
679 netdev_get_name(netdev_), 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_, const void *data, size_t size)
692 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
693 struct netdev_dev_bsd * netdev_dev =
694 netdev_dev_bsd_cast(netdev_get_dev(netdev_));
696 if (netdev->netdev_fd < 0) {
702 if (!strcmp(netdev_get_type(netdev_), "tap") &&
703 netdev_dev->tap_fd == netdev->netdev_fd) {
704 retval = write(netdev->netdev_fd, data, size);
706 retval = pcap_inject(netdev->pcap_handle, data, size);
709 if (errno == EINTR) {
711 } else if (errno != EAGAIN) {
712 VLOG_WARN_RL(&rl, "error sending Ethernet packet on %s: %s",
713 netdev_get_name(netdev_), strerror(errno));
716 } else if (retval != size) {
717 VLOG_WARN_RL(&rl, "sent partial Ethernet packet (%zd bytes of "
718 "%zu) on %s", retval, size,
719 netdev_get_name(netdev_));
728 * Registers with the poll loop to wake up from the next call to poll_block()
729 * when the packet transmission queue has sufficient room to transmit a packet
730 * with netdev_send().
733 netdev_bsd_send_wait(struct netdev *netdev_)
735 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
737 if (netdev->netdev_fd < 0) { /* Nothing to do. */
741 if (strcmp(netdev_get_type(netdev_), "tap")) {
742 poll_fd_wait(netdev->netdev_fd, POLLOUT);
744 /* TAP device always accepts packets. */
745 poll_immediate_wake();
750 * Attempts to set 'netdev''s MAC address to 'mac'. Returns 0 if successful,
751 * otherwise a positive errno value.
754 netdev_bsd_set_etheraddr(struct netdev *netdev_,
755 const uint8_t mac[ETH_ADDR_LEN])
757 struct netdev_dev_bsd *netdev_dev =
758 netdev_dev_bsd_cast(netdev_get_dev(netdev_));
761 if (!(netdev_dev->cache_valid & VALID_ETHERADDR)
762 || !eth_addr_equals(netdev_dev->etheraddr, mac)) {
763 error = set_etheraddr(netdev_get_name(netdev_), AF_LINK, ETH_ADDR_LEN,
766 netdev_dev->cache_valid |= VALID_ETHERADDR;
767 memcpy(netdev_dev->etheraddr, mac, ETH_ADDR_LEN);
768 netdev_dev_bsd_changed(netdev_dev);
777 * Returns a pointer to 'netdev''s MAC address. The caller must not modify or
778 * free the returned buffer.
781 netdev_bsd_get_etheraddr(const struct netdev *netdev_,
782 uint8_t mac[ETH_ADDR_LEN])
784 struct netdev_dev_bsd *netdev_dev =
785 netdev_dev_bsd_cast(netdev_get_dev(netdev_));
787 if (!(netdev_dev->cache_valid & VALID_ETHERADDR)) {
788 int error = get_etheraddr(netdev_get_name(netdev_),
789 netdev_dev->etheraddr);
793 netdev_dev->cache_valid |= VALID_ETHERADDR;
795 memcpy(mac, netdev_dev->etheraddr, ETH_ADDR_LEN);
801 * Returns the maximum size of transmitted (and received) packets on 'netdev',
802 * in bytes, not including the hardware header; thus, this is typically 1500
803 * bytes for Ethernet devices.
806 netdev_bsd_get_mtu(const struct netdev *netdev_, int *mtup)
808 struct netdev_dev_bsd *netdev_dev =
809 netdev_dev_bsd_cast(netdev_get_dev(netdev_));
811 if (!(netdev_dev->cache_valid & VALID_MTU)) {
815 error = netdev_bsd_do_ioctl(netdev_, &ifr, SIOCGIFMTU, "SIOCGIFMTU");
819 netdev_dev->mtu = ifr.ifr_mtu;
820 netdev_dev->cache_valid |= VALID_MTU;
823 *mtup = netdev_dev->mtu;
828 netdev_bsd_get_ifindex(const struct netdev *netdev)
832 error = get_ifindex(netdev, &ifindex);
833 return error ? -error : ifindex;
837 netdev_bsd_get_carrier(const struct netdev *netdev_, bool *carrier)
839 struct netdev_dev_bsd *netdev_dev =
840 netdev_dev_bsd_cast(netdev_get_dev(netdev_));
842 if (!(netdev_dev->cache_valid & VALID_CARRIER)) {
843 struct ifmediareq ifmr;
845 memset(&ifmr, 0, sizeof(ifmr));
846 strncpy(ifmr.ifm_name, netdev_get_name(netdev_), sizeof ifmr.ifm_name);
848 if (ioctl(af_inet_sock, SIOCGIFMEDIA, &ifmr) == -1) {
849 VLOG_DBG_RL(&rl, "%s: ioctl(SIOCGIFMEDIA) failed: %s",
850 netdev_get_name(netdev_), strerror(errno));
854 netdev_dev->carrier = (ifmr.ifm_status & IFM_ACTIVE) == IFM_ACTIVE;
855 netdev_dev->cache_valid |= VALID_CARRIER;
857 /* If the interface doesn't report whether the media is active,
858 * just assume it is active. */
859 if ((ifmr.ifm_status & IFM_AVALID) == 0) {
860 netdev_dev->carrier = true;
863 *carrier = netdev_dev->carrier;
868 /* Retrieves current device stats for 'netdev'. */
870 netdev_bsd_get_stats(const struct netdev *netdev_, struct netdev_stats *stats)
875 struct ifmibdata ifmd;
880 mib[2] = NETLINK_GENERIC;
881 mib[3] = IFMIB_SYSTEM;
882 mib[4] = IFMIB_IFCOUNT;
884 len = sizeof(if_count);
886 if (sysctl(mib, 5, &if_count, &len, (void *)0, 0) == -1) {
887 VLOG_DBG_RL(&rl, "%s: sysctl failed: %s",
888 netdev_get_name(netdev_), strerror(errno));
892 mib[5] = IFDATA_GENERAL;
893 mib[3] = IFMIB_IFDATA;
895 for (i = 1; i <= if_count; i++) {
897 if (sysctl(mib, 6, &ifmd, &len, (void *)0, 0) == -1) {
898 VLOG_DBG_RL(&rl, "%s: sysctl failed: %s",
899 netdev_get_name(netdev_), strerror(errno));
901 } else if (!strcmp(ifmd.ifmd_name, netdev_get_name(netdev_))) {
902 stats->rx_packets = ifmd.ifmd_data.ifi_ipackets;
903 stats->tx_packets = ifmd.ifmd_data.ifi_opackets;
904 stats->rx_bytes = ifmd.ifmd_data.ifi_ibytes;
905 stats->tx_bytes = ifmd.ifmd_data.ifi_obytes;
906 stats->rx_errors = ifmd.ifmd_data.ifi_ierrors;
907 stats->tx_errors = ifmd.ifmd_data.ifi_oerrors;
908 stats->rx_dropped = ifmd.ifmd_data.ifi_iqdrops;
909 stats->tx_dropped = 0;
910 stats->multicast = ifmd.ifmd_data.ifi_imcasts;
911 stats->collisions = ifmd.ifmd_data.ifi_collisions;
913 stats->rx_length_errors = 0;
914 stats->rx_over_errors = 0;
915 stats->rx_crc_errors = 0;
916 stats->rx_frame_errors = 0;
917 stats->rx_fifo_errors = 0;
918 stats->rx_missed_errors = 0;
920 stats->tx_aborted_errors = 0;
921 stats->tx_carrier_errors = 0;
922 stats->tx_fifo_errors = 0;
923 stats->tx_heartbeat_errors = 0;
924 stats->tx_window_errors = 0;
933 netdev_bsd_parse_media(int media)
935 uint32_t supported = 0;
936 bool half_duplex = media & IFM_HDX ? true : false;
938 switch (IFM_SUBTYPE(media)) {
943 supported |= half_duplex ? NETDEV_F_10MB_HD : NETDEV_F_10MB_FD;
944 supported |= NETDEV_F_COPPER;
948 supported |= half_duplex ? NETDEV_F_10MB_HD : NETDEV_F_10MB_FD;
949 supported |= NETDEV_F_FIBER;
956 supported |= half_duplex ? NETDEV_F_100MB_HD : NETDEV_F_100MB_FD;
957 supported |= NETDEV_F_COPPER;
961 supported |= half_duplex ? NETDEV_F_100MB_HD : NETDEV_F_100MB_FD;
962 supported |= NETDEV_F_FIBER;
967 supported |= half_duplex ? NETDEV_F_1GB_HD : NETDEV_F_1GB_FD;
968 supported |= NETDEV_F_COPPER;
973 supported |= half_duplex ? NETDEV_F_1GB_HD : NETDEV_F_1GB_FD;
974 supported |= NETDEV_F_FIBER;
978 supported |= NETDEV_F_10GB_FD;
979 supported |= NETDEV_F_COPPER;
984 supported |= NETDEV_F_10GB_FD;
985 supported |= NETDEV_F_FIBER;
992 if (IFM_SUBTYPE(media) == IFM_AUTO) {
993 supported |= NETDEV_F_AUTONEG;
996 if (media & IFM_ETH_FMASK) {
997 supported |= NETDEV_F_PAUSE;
1005 * Stores the features supported by 'netdev' into each of '*current',
1006 * '*advertised', '*supported', and '*peer' that are non-null. Each value is a
1007 * bitmap of "enum ofp_port_features" bits, in host byte order. Returns 0 if
1008 * successful, otherwise a positive errno value. On failure, all of the
1009 * passed-in values are set to 0.
1012 netdev_bsd_get_features(const struct netdev *netdev,
1013 enum netdev_features *current, uint32_t *advertised,
1014 enum netdev_features *supported, uint32_t *peer)
1016 struct ifmediareq ifmr;
1022 /* XXX Look into SIOCGIFCAP instead of SIOCGIFMEDIA */
1024 memset(&ifmr, 0, sizeof(ifmr));
1025 strncpy(ifmr.ifm_name, netdev_get_name(netdev), sizeof ifmr.ifm_name);
1027 /* We make two SIOCGIFMEDIA ioctl calls. The first to determine the
1028 * number of supported modes, and a second with a buffer to retrieve
1030 if (ioctl(af_inet_sock, SIOCGIFMEDIA, &ifmr) == -1) {
1031 VLOG_DBG_RL(&rl, "%s: ioctl(SIOCGIFMEDIA) failed: %s",
1032 netdev_get_name(netdev), strerror(errno));
1036 media_list = xcalloc(ifmr.ifm_count, sizeof(int));
1037 ifmr.ifm_ulist = media_list;
1039 if (!IFM_TYPE(ifmr.ifm_current) & IFM_ETHER) {
1040 VLOG_DBG_RL(&rl, "%s: doesn't appear to be ethernet",
1041 netdev_get_name(netdev));
1046 if (ioctl(af_inet_sock, SIOCGIFMEDIA, &ifmr) == -1) {
1047 VLOG_DBG_RL(&rl, "%s: ioctl(SIOCGIFMEDIA) failed: %s",
1048 netdev_get_name(netdev), strerror(errno));
1053 /* Current settings. */
1054 *current = netdev_bsd_parse_media(ifmr.ifm_active);
1056 /* Advertised features. */
1057 *advertised = netdev_bsd_parse_media(ifmr.ifm_current);
1059 /* Supported features. */
1061 for (i = 0; i < ifmr.ifm_count; i++) {
1062 *supported |= netdev_bsd_parse_media(ifmr.ifm_ulist[i]);
1065 /* Peer advertisements. */
1066 *peer = 0; /* XXX */
1075 * If 'netdev' has an assigned IPv4 address, sets '*in4' to that address (if
1076 * 'in4' is non-null) and returns true. Otherwise, returns false.
1079 netdev_bsd_get_in4(const struct netdev *netdev_, struct in_addr *in4,
1080 struct in_addr *netmask)
1082 struct netdev_dev_bsd *netdev_dev =
1083 netdev_dev_bsd_cast(netdev_get_dev(netdev_));
1085 if (!(netdev_dev->cache_valid & VALID_IN4)) {
1086 const struct sockaddr_in *sin;
1090 ifr.ifr_addr.sa_family = AF_INET;
1091 error = netdev_bsd_do_ioctl(netdev_, &ifr,
1092 SIOCGIFADDR, "SIOCGIFADDR");
1097 sin = (struct sockaddr_in *) &ifr.ifr_addr;
1098 netdev_dev->in4 = sin->sin_addr;
1099 netdev_dev->cache_valid |= VALID_IN4;
1100 error = netdev_bsd_do_ioctl(netdev_, &ifr,
1101 SIOCGIFNETMASK, "SIOCGIFNETMASK");
1105 *netmask = ((struct sockaddr_in*)&ifr.ifr_addr)->sin_addr;
1107 *in4 = netdev_dev->in4;
1109 return in4->s_addr == INADDR_ANY ? EADDRNOTAVAIL : 0;
1113 * Assigns 'addr' as 'netdev''s IPv4 address and 'mask' as its netmask. If
1114 * 'addr' is INADDR_ANY, 'netdev''s IPv4 address is cleared. Returns a
1115 * positive errno value.
1118 netdev_bsd_set_in4(struct netdev *netdev_, struct in_addr addr,
1119 struct in_addr mask)
1121 struct netdev_dev_bsd *netdev_dev =
1122 netdev_dev_bsd_cast(netdev_get_dev(netdev_));
1125 error = do_set_addr(netdev_, SIOCSIFADDR, "SIOCSIFADDR", addr);
1127 netdev_dev->cache_valid |= VALID_IN4;
1128 netdev_dev->in4 = addr;
1129 if (addr.s_addr != INADDR_ANY) {
1130 error = do_set_addr(netdev_, SIOCSIFNETMASK,
1131 "SIOCSIFNETMASK", mask);
1133 netdev_dev_bsd_changed(netdev_dev);
1139 netdev_bsd_get_in6(const struct netdev *netdev_, struct in6_addr *in6)
1141 struct netdev_dev_bsd *netdev_dev =
1142 netdev_dev_bsd_cast(netdev_get_dev(netdev_));
1143 if (!(netdev_dev->cache_valid & VALID_IN6)) {
1144 struct ifaddrs *ifa, *head;
1145 struct sockaddr_in6 *sin6;
1146 const char *netdev_name = netdev_get_name(netdev_);
1148 if (getifaddrs(&head) != 0) {
1149 VLOG_ERR("getifaddrs on %s device failed: %s", netdev_name,
1154 for (ifa = head; ifa; ifa = ifa->ifa_next) {
1155 if (ifa->ifa_addr->sa_family == AF_INET6 &&
1156 !strcmp(ifa->ifa_name, netdev_name)) {
1157 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
1159 memcpy(&netdev_dev->in6, &sin6->sin6_addr, sin6->sin6_len);
1160 netdev_dev->cache_valid |= VALID_IN6;
1161 *in6 = netdev_dev->in6;
1167 return EADDRNOTAVAIL;
1169 *in6 = netdev_dev->in6;
1174 make_in4_sockaddr(struct sockaddr *sa, struct in_addr addr)
1176 struct sockaddr_in sin;
1177 memset(&sin, 0, sizeof sin);
1178 sin.sin_family = AF_INET;
1179 sin.sin_addr = addr;
1182 memset(sa, 0, sizeof *sa);
1183 memcpy(sa, &sin, sizeof sin);
1187 do_set_addr(struct netdev *netdev,
1188 int ioctl_nr, const char *ioctl_name, struct in_addr addr)
1191 make_in4_sockaddr(&ifr.ifr_addr, addr);
1192 return netdev_bsd_do_ioctl(netdev, &ifr, ioctl_nr, ioctl_name);
1196 nd_to_iff_flags(enum netdev_flags nd)
1199 if (nd & NETDEV_UP) {
1202 if (nd & NETDEV_PROMISC) {
1204 iff |= IFF_PPROMISC;
1210 iff_to_nd_flags(int iff)
1212 enum netdev_flags nd = 0;
1216 if (iff & IFF_PROMISC) {
1217 nd |= NETDEV_PROMISC;
1223 netdev_bsd_update_flags(struct netdev *netdev, enum netdev_flags off,
1224 enum netdev_flags on, enum netdev_flags *old_flagsp)
1226 int old_flags, new_flags;
1229 error = get_flags(netdev, &old_flags);
1231 *old_flagsp = iff_to_nd_flags(old_flags);
1232 new_flags = (old_flags & ~nd_to_iff_flags(off)) | nd_to_iff_flags(on);
1233 if (new_flags != old_flags) {
1234 error = set_flags(netdev, new_flags);
1235 netdev_dev_bsd_changed(netdev_dev_bsd_cast(netdev_get_dev(netdev)));
1242 netdev_bsd_change_seq(const struct netdev *netdev)
1244 return netdev_dev_bsd_cast(netdev_get_dev(netdev))->change_seq;
1248 const struct netdev_class netdev_bsd_class = {
1254 netdev_bsd_create_system,
1256 NULL, /* get_config */
1257 NULL, /* set_config */
1258 netdev_bsd_open_system,
1264 netdev_bsd_recv_wait,
1268 netdev_bsd_send_wait,
1270 netdev_bsd_set_etheraddr,
1271 netdev_bsd_get_etheraddr,
1274 netdev_bsd_get_ifindex,
1275 netdev_bsd_get_carrier,
1276 NULL, /* get_carrier_resets */
1277 NULL, /* set_miimon_interval */
1278 netdev_bsd_get_stats,
1279 NULL, /* set_stats */
1281 netdev_bsd_get_features,
1282 NULL, /* set_advertisement */
1283 NULL, /* set_policing */
1284 NULL, /* get_qos_type */
1285 NULL, /* get_qos_capabilities */
1288 NULL, /* get_queue */
1289 NULL, /* set_queue */
1290 NULL, /* delete_queue */
1291 NULL, /* get_queue_stats */
1292 NULL, /* dump_queue */
1293 NULL, /* dump_queue_stats */
1298 NULL, /* add_router */
1299 NULL, /* get_next_hop */
1300 NULL, /* get_drv_info */
1301 NULL, /* arp_lookup */
1303 netdev_bsd_update_flags,
1305 netdev_bsd_change_seq
1308 const struct netdev_class netdev_tap_class = {
1314 netdev_bsd_create_tap,
1316 NULL, /* get_config */
1317 NULL, /* set_config */
1318 netdev_bsd_open_system,
1324 netdev_bsd_recv_wait,
1328 netdev_bsd_send_wait,
1330 netdev_bsd_set_etheraddr,
1331 netdev_bsd_get_etheraddr,
1334 netdev_bsd_get_ifindex,
1335 netdev_bsd_get_carrier,
1336 NULL, /* get_carrier_resets */
1337 NULL, /* set_miimon_interval */
1338 netdev_bsd_get_stats,
1339 NULL, /* set_stats */
1341 netdev_bsd_get_features,
1342 NULL, /* set_advertisement */
1343 NULL, /* set_policing */
1344 NULL, /* get_qos_type */
1345 NULL, /* get_qos_capabilities */
1348 NULL, /* get_queue */
1349 NULL, /* set_queue */
1350 NULL, /* delete_queue */
1351 NULL, /* get_queue_stats */
1352 NULL, /* dump_queue */
1353 NULL, /* dump_queue_stats */
1358 NULL, /* add_router */
1359 NULL, /* get_next_hop */
1360 NULL, /* get_drv_info */
1361 NULL, /* arp_lookup */
1363 netdev_bsd_update_flags,
1365 netdev_bsd_change_seq
1370 destroy_tap(int fd, const char *name)
1375 strcpy(ifr.ifr_name, name);
1376 /* XXX What to do if this call fails? */
1377 ioctl(af_inet_sock, SIOCIFDESTROY, &ifr);
1381 get_flags(const struct netdev *netdev, int *flags)
1386 error = netdev_bsd_do_ioctl(netdev, &ifr, SIOCGIFFLAGS, "SIOCGIFFLAGS");
1388 *flags = 0xFFFF0000 & (ifr.ifr_flagshigh << 16);
1389 *flags |= 0x0000FFFF & ifr.ifr_flags;
1395 set_flags(struct netdev *netdev, int flags)
1399 ifr.ifr_flags = 0x0000FFFF & flags;
1400 ifr.ifr_flagshigh = (0xFFFF0000 & flags) >> 16;
1402 return netdev_bsd_do_ioctl(netdev, &ifr, SIOCSIFFLAGS, "SIOCSIFFLAGS");
1406 get_ifindex(const struct netdev *netdev_, int *ifindexp)
1408 struct netdev_dev_bsd *netdev_dev =
1409 netdev_dev_bsd_cast(netdev_get_dev(netdev_));
1411 if (!(netdev_dev->cache_valid & VALID_IFINDEX)) {
1412 int ifindex = if_nametoindex(netdev_get_name(netdev_));
1416 netdev_dev->cache_valid |= VALID_IFINDEX;
1417 netdev_dev->ifindex = ifindex;
1419 *ifindexp = netdev_dev->ifindex;
1424 get_etheraddr(const char *netdev_name, uint8_t ea[ETH_ADDR_LEN])
1426 struct ifaddrs *head;
1427 struct ifaddrs *ifa;
1428 struct sockaddr_dl *sdl;
1430 if (getifaddrs(&head) != 0) {
1431 VLOG_ERR("getifaddrs on %s device failed: %s", netdev_name,
1436 for (ifa = head; ifa; ifa = ifa->ifa_next) {
1437 if (ifa->ifa_addr->sa_family == AF_LINK) {
1438 if (!strcmp(ifa->ifa_name, netdev_name)) {
1439 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
1441 memcpy(ea, LLADDR(sdl), sdl->sdl_alen);
1449 VLOG_ERR("could not find ethernet address for %s device", netdev_name);
1455 set_etheraddr(const char *netdev_name, int hwaddr_family,
1456 int hwaddr_len, const uint8_t mac[ETH_ADDR_LEN])
1460 memset(&ifr, 0, sizeof ifr);
1461 strncpy(ifr.ifr_name, netdev_name, sizeof ifr.ifr_name);
1462 ifr.ifr_addr.sa_family = hwaddr_family;
1463 ifr.ifr_addr.sa_len = hwaddr_len;
1464 memcpy(ifr.ifr_addr.sa_data, mac, hwaddr_len);
1465 if (ioctl(af_inet_sock, SIOCSIFLLADDR, &ifr) < 0) {
1466 VLOG_ERR("ioctl(SIOCSIFLLADDR) on %s device failed: %s",
1467 netdev_name, strerror(errno));
1474 netdev_bsd_do_ioctl(const struct netdev *netdev, struct ifreq *ifr,
1475 unsigned long cmd, const char *cmd_name)
1477 strncpy(ifr->ifr_name, netdev_get_name(netdev), sizeof ifr->ifr_name);
1478 if (ioctl(af_inet_sock, cmd, ifr) == -1) {
1479 VLOG_DBG_RL(&rl, "%s: ioctl(%s) failed: %s",
1480 netdev_get_name(netdev), cmd_name, strerror(errno));