2 * Copyright (c) 2011 Gaetano Catalli.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
7 * 1. Redistributions of source code must retain the above copyright notice,
8 * this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED ``AS IS'' WITHOUT ANY WARRANTIES OF ANY KIND.
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 1024
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();
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_dev_bsd *dev;
219 struct netdev_dev *base_dev = netdev_dev_from_name(change->if_name);
222 const struct netdev_class *netdev_class =
223 netdev_dev_get_class(base_dev);
225 if (is_netdev_bsd_class(netdev_class)) {
226 dev = netdev_dev_bsd_cast(base_dev);
227 dev->cache_valid = 0;
232 * XXX the API is lacking, we should be able to iterate on the list of
233 * netdevs without having to store the info in a temp shash.
235 struct shash device_shash;
236 struct shash_node *node;
238 shash_init(&device_shash);
239 netdev_dev_get_devices(&netdev_bsd_class, &device_shash);
240 SHASH_FOR_EACH (node, &device_shash) {
242 dev->cache_valid = 0;
244 shash_destroy(&device_shash);
249 cache_notifier_ref(void)
253 if (!cache_notifier_refcount) {
254 ret = rtbsd_notifier_register(&netdev_bsd_cache_notifier,
255 netdev_bsd_cache_cb, NULL);
260 cache_notifier_refcount++;
265 cache_notifier_unref(void)
267 cache_notifier_refcount--;
268 if (cache_notifier_refcount == 0) {
269 rtbsd_notifier_unregister(&netdev_bsd_cache_notifier);
274 /* Allocate a netdev_dev_bsd structure */
276 netdev_bsd_create_system(const struct netdev_class *class, const char *name,
277 struct netdev_dev **netdev_devp)
279 struct netdev_dev_bsd *netdev_dev;
282 error = cache_notifier_ref();
287 netdev_dev = xzalloc(sizeof *netdev_dev);
288 netdev_dev->change_seq = 1;
289 netdev_dev_init(&netdev_dev->netdev_dev, name, class);
290 *netdev_devp = &netdev_dev->netdev_dev;
296 * Allocate a netdev_dev_bsd structure with 'tap' class.
299 netdev_bsd_create_tap(const struct netdev_class *class, const char *name,
300 struct netdev_dev **netdev_devp)
302 struct netdev_dev_bsd *netdev_dev = NULL;
306 error = cache_notifier_ref();
311 /* allocate the device structure and set the internal flag */
312 netdev_dev = xzalloc(sizeof *netdev_dev);
314 memset(&ifr, 0, sizeof(ifr));
316 /* Create a tap device by opening /dev/tap. The TAPGIFNAME ioctl is used
317 * to retrieve the name of the tap device. */
318 netdev_dev->tap_fd = open("/dev/tap", O_RDWR);
319 if (netdev_dev->tap_fd < 0) {
321 VLOG_WARN("opening \"/dev/tap\" failed: %s", strerror(error));
322 goto error_undef_notifier;
325 /* Retrieve tap name (e.g. tap0) */
326 if (ioctl(netdev_dev->tap_fd, TAPGIFNAME, &ifr) == -1) {
327 /* XXX Need to destroy the device? */
329 goto error_undef_notifier;
332 /* Change the name of the tap device */
333 ifr.ifr_data = (void *)name;
334 if (ioctl(af_inet_sock, SIOCSIFNAME, &ifr) == -1) {
336 destroy_tap(netdev_dev->tap_fd, ifr.ifr_name);
337 goto error_undef_notifier;
340 /* set non-blocking. */
341 error = set_nonblocking(netdev_dev->tap_fd);
343 destroy_tap(netdev_dev->tap_fd, name);
344 goto error_undef_notifier;
348 ifr.ifr_flags = (uint16_t)IFF_UP;
349 ifr.ifr_flagshigh = 0;
350 strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
351 if (ioctl(af_inet_sock, SIOCSIFFLAGS, &ifr) == -1) {
353 destroy_tap(netdev_dev->tap_fd, name);
354 goto error_undef_notifier;
357 /* initialize the device structure and
358 * link the structure to its netdev */
359 netdev_dev_init(&netdev_dev->netdev_dev, name, class);
360 *netdev_devp = &netdev_dev->netdev_dev;
364 error_undef_notifier:
365 cache_notifier_unref();
372 netdev_bsd_destroy(struct netdev_dev *netdev_dev_)
374 struct netdev_dev_bsd *netdev_dev = netdev_dev_bsd_cast(netdev_dev_);
376 cache_notifier_unref();
378 if (netdev_dev->tap_fd >= 0 &&
379 !strcmp(netdev_dev_get_type(netdev_dev_), "tap")) {
380 destroy_tap(netdev_dev->tap_fd, netdev_dev_get_name(netdev_dev_));
387 netdev_bsd_open_system(struct netdev_dev *netdev_dev_, struct netdev **netdevp)
389 struct netdev_dev_bsd *netdev_dev = netdev_dev_bsd_cast(netdev_dev_);
390 struct netdev_bsd *netdev;
392 enum netdev_flags flags;
394 /* Allocate network device. */
395 netdev = xcalloc(1, sizeof *netdev);
396 netdev->netdev_fd = -1;
397 netdev_init(&netdev->netdev, netdev_dev_);
399 /* Verify that the netdev really exists by attempting to read its flags */
400 error = netdev_get_flags(&netdev->netdev, &flags);
401 if (error == ENXIO) {
405 /* The first user that opens a tap port(from dpif_create_and_open()) will
406 * receive the file descriptor associated with the tap device. Instead, the
407 * following users will open the tap device as a normal 'system' device. */
408 if (!strcmp(netdev_dev_get_type(netdev_dev_), "tap") &&
409 !netdev_dev->tap_opened) {
410 netdev_dev->tap_opened = true;
411 netdev->netdev_fd = netdev_dev->tap_fd;
414 *netdevp = &netdev->netdev;
418 netdev_uninit(&netdev->netdev, true);
424 /* Close a 'netdev'. */
426 netdev_bsd_close(struct netdev *netdev_)
428 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
430 if (netdev->netdev_fd >= 0 && strcmp(netdev_get_type(netdev_), "tap")) {
431 pcap_close(netdev->pcap_handle);
438 netdev_bsd_listen(struct netdev *netdev_)
440 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
441 char errbuf[PCAP_ERRBUF_SIZE];
446 if (netdev->netdev_fd >= 0) {
450 /* open the pcap device. The device is opened in non-promiscuous mode
451 * because the interface flags are manually set by the caller. */
452 netdev->pcap_handle = pcap_open_live(netdev_get_name(netdev_), PCAP_SNAPLEN,
454 if (netdev->pcap_handle == NULL) {
459 /* initialize netdev->netdev_fd */
460 fd = pcap_get_selectable_fd(netdev->pcap_handle);
466 /* Set non-blocking mode. Also the BIOCIMMEDIATE ioctl must be called
467 * on the file descriptor returned by pcap_get_selectable_fd to achieve
468 * a real non-blocking behaviour.*/
469 error = pcap_setnonblock(netdev->pcap_handle, 1, errbuf);
475 /* This call assure that reads return immediately upon packet reception.
476 * Otherwise, a read will block until either the kernel buffer becomes
477 * full or a timeout occurs. */
478 if(ioctl(fd, BIOCIMMEDIATE, &one) < 0 ) {
479 VLOG_ERR("ioctl(BIOCIMMEDIATE) on %s device failed: %s",
480 netdev_get_name(netdev_), strerror(errno));
485 /* Capture only incoming packets */
486 error = pcap_setdirection(netdev->pcap_handle, PCAP_D_IN);
492 netdev->netdev_fd = fd;
497 close(netdev->netdev_fd);
503 /* The recv callback of the netdev class returns the number of bytes of the
506 * This can be done by the pcap_next() function. Unfortunately pcap_next() does
507 * not make difference between a missing packet on the capture interface and
508 * an error during the file capture. We can use the pcap_dispatch() function
509 * instead, which is able to distinguish between errors and null packet.
511 * To make pcap_dispatch() returns the number of bytes read from the interface
512 * we need to define the following callback and argument.
521 * This callback will be executed on every captured packet.
523 * If the packet captured by pcap_dispatch() does not fit the pcap buffer,
524 * pcap returns a truncated packet and we follow this behavior.
526 * The argument args->retval is the packet size in bytes.
529 proc_pkt(u_char *args_, const struct pcap_pkthdr *hdr, const u_char *packet)
531 struct pcap_arg *args = (struct pcap_arg *)args_;
533 if (args->size < hdr->len) {
534 printf("%s Warning: Packet truncated'n", __func__);
535 args->retval = args->size;
537 args->retval = hdr->len;
540 /* copy the packet to our buffer */
541 memcpy(args->data, packet, args->retval);
545 * This function attempts to receive a packet from the specified network
546 * device. It is assumed that the network device is a system device or a tap
547 * device opened as a system one. In this case the read operation is performed
548 * on the 'netdev' pcap descriptor.
551 netdev_bsd_recv_system(struct netdev_bsd *netdev, void *data, size_t size)
556 if (netdev->netdev_fd < 0) {
557 /* Device was opened with NETDEV_ETH_TYPE_NONE. */
561 /* prepare the pcap argument to store the packet */
566 ret = pcap_dispatch(netdev->pcap_handle, 1, proc_pkt, (u_char *)&arg);
569 return arg.retval; /* arg.retval < 0 is handled in the caller */
572 if (errno == EINTR) {
582 * This function attempts to receive a packet from the specified network
583 * device. It is assumed that the network device is a tap device and the
584 * 'netdev_fd' member of the 'netdev' structure is initialized with the tap
588 netdev_bsd_recv_tap(struct netdev_bsd *netdev, void *data, size_t size)
590 if (netdev->netdev_fd < 0) {
591 /* Device was opened with NETDEV_ETH_TYPE_NONE. */
596 ssize_t retval = read(netdev->netdev_fd, data, size);
599 } else if (errno != EINTR) {
600 if (errno != EAGAIN) {
601 VLOG_WARN_RL(&rl, "error receiving Ethernet packet on %s: %s",
602 strerror(errno), netdev->netdev.netdev_dev->name);
611 * According with the nature of the device a different function must be called.
612 * If the device is the bridge local port the 'netdev_bsd_recv_tap' function
613 * must be called, otherwise the 'netdev_bsd_recv_system' function is called.
615 * type!="tap" ---> system device.
616 * type=="tap" && netdev_fd == tap_fd ---> internal tap device
617 * type=="tap" && netdev_fd != tap_fd ---> internal tap device
622 netdev_bsd_recv(struct netdev *netdev_, void* data, size_t size)
624 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
625 struct netdev_dev_bsd * netdev_dev =
626 netdev_dev_bsd_cast(netdev_get_dev(netdev_));
628 if (!strcmp(netdev_get_type(netdev_), "tap") &&
629 netdev->netdev_fd == netdev_dev->tap_fd) {
630 return netdev_bsd_recv_tap(netdev, data, size);
632 return netdev_bsd_recv_system(netdev, data, size);
638 * Registers with the poll loop to wake up from the next call to poll_block()
639 * when a packet is ready to be received with netdev_recv() on 'netdev'.
642 netdev_bsd_recv_wait(struct netdev *netdev_)
644 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
646 if (netdev->netdev_fd >= 0) {
647 poll_fd_wait(netdev->netdev_fd, POLLIN);
651 /* Discards all packets waiting to be received from 'netdev'. */
653 netdev_bsd_drain(struct netdev *netdev_)
656 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
658 strcpy(ifr.ifr_name, netdev_get_name(netdev_));
659 if (ioctl(netdev->netdev_fd, BIOCFLUSH, &ifr) == -1) {
660 VLOG_DBG_RL(&rl, "%s: ioctl(BIOCFLUSH) failed: %s",
661 netdev_get_name(netdev_), strerror(errno));
668 * Send a packet on the specified network device. The device could be either a
669 * system or a tap device.
672 netdev_bsd_send(struct netdev *netdev_, const void *data, size_t size)
674 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
675 struct netdev_dev_bsd * netdev_dev =
676 netdev_dev_bsd_cast(netdev_get_dev(netdev_));
678 /* XXX should support sending even if 'ethertype' was NETDEV_ETH_TYPE_NONE.
680 if (netdev->netdev_fd < 0) {
686 if (!strcmp(netdev_get_type(netdev_), "tap") &&
687 netdev_dev->tap_fd == netdev->netdev_fd) {
688 retval = write(netdev->netdev_fd, data, size);
690 retval = pcap_inject(netdev->pcap_handle, data, size);
693 if (errno == EINTR) {
695 } else if (errno != EAGAIN) {
696 VLOG_WARN_RL(&rl, "error sending Ethernet packet on %s: %s",
697 netdev_get_name(netdev_), strerror(errno));
700 } else if (retval != size) {
701 VLOG_WARN_RL(&rl, "sent partial Ethernet packet (%zd bytes of "
702 "%zu) on %s", retval, size,
703 netdev_get_name(netdev_));
712 * Registers with the poll loop to wake up from the next call to poll_block()
713 * when the packet transmission queue has sufficient room to transmit a packet
714 * with netdev_send().
717 netdev_bsd_send_wait(struct netdev *netdev_)
719 struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
721 if (netdev->netdev_fd < 0) { /* Nothing to do. */
725 if (strcmp(netdev_get_type(netdev_), "tap")) {
726 poll_fd_wait(netdev->netdev_fd, POLLOUT);
728 /* TAP device always accepts packets. */
729 poll_immediate_wake();
734 * Attempts to set 'netdev''s MAC address to 'mac'. Returns 0 if successful,
735 * otherwise a positive errno value.
738 netdev_bsd_set_etheraddr(struct netdev *netdev_,
739 const uint8_t mac[ETH_ADDR_LEN])
741 struct netdev_dev_bsd *netdev_dev =
742 netdev_dev_bsd_cast(netdev_get_dev(netdev_));
745 if (!(netdev_dev->cache_valid & VALID_ETHERADDR)
746 || !eth_addr_equals(netdev_dev->etheraddr, mac)) {
747 error = set_etheraddr(netdev_get_name(netdev_), AF_LINK, ETH_ADDR_LEN,
750 netdev_dev->cache_valid |= VALID_ETHERADDR;
751 memcpy(netdev_dev->etheraddr, mac, ETH_ADDR_LEN);
760 * Returns a pointer to 'netdev''s MAC address. The caller must not modify or
761 * free the returned buffer.
764 netdev_bsd_get_etheraddr(const struct netdev *netdev_,
765 uint8_t mac[ETH_ADDR_LEN])
767 struct netdev_dev_bsd *netdev_dev =
768 netdev_dev_bsd_cast(netdev_get_dev(netdev_));
770 if (!(netdev_dev->cache_valid & VALID_ETHERADDR)) {
771 int error = get_etheraddr(netdev_get_name(netdev_),
772 netdev_dev->etheraddr);
776 netdev_dev->cache_valid |= VALID_ETHERADDR;
778 memcpy(mac, netdev_dev->etheraddr, ETH_ADDR_LEN);
784 * Returns the maximum size of transmitted (and received) packets on 'netdev',
785 * in bytes, not including the hardware header; thus, this is typically 1500
786 * bytes for Ethernet devices.
789 netdev_bsd_get_mtu(const struct netdev *netdev_, int *mtup)
791 struct netdev_dev_bsd *netdev_dev =
792 netdev_dev_bsd_cast(netdev_get_dev(netdev_));
794 if (!(netdev_dev->cache_valid & VALID_MTU)) {
798 error = netdev_bsd_do_ioctl(netdev_, &ifr, SIOCGIFMTU, "SIOCGIFMTU");
802 netdev_dev->mtu = ifr.ifr_mtu;
803 netdev_dev->cache_valid |= VALID_MTU;
806 *mtup = netdev_dev->mtu;
811 netdev_bsd_get_ifindex(const struct netdev *netdev)
815 error = get_ifindex(netdev, &ifindex);
816 return error ? -error : ifindex;
820 netdev_bsd_get_carrier(const struct netdev *netdev_, bool *carrier)
822 struct netdev_dev_bsd *netdev_dev =
823 netdev_dev_bsd_cast(netdev_get_dev(netdev_));
825 if (!(netdev_dev->cache_valid & VALID_CARRIER)) {
826 struct ifmediareq ifmr;
828 memset(&ifmr, 0, sizeof(ifmr));
829 strncpy(ifmr.ifm_name, netdev_get_name(netdev_), sizeof ifmr.ifm_name);
831 if (ioctl(af_inet_sock, SIOCGIFMEDIA, &ifmr) == -1) {
832 VLOG_DBG_RL(&rl, "%s: ioctl(SIOCGIFMEDIA) failed: %s",
833 netdev_get_name(netdev_), strerror(errno));
837 netdev_dev->carrier = (ifmr.ifm_status & IFM_ACTIVE) == IFM_ACTIVE;
838 netdev_dev->cache_valid |= VALID_CARRIER;
840 /* If the interface doesn't report whether the media is active,
841 * just assume it is active. */
842 if ((ifmr.ifm_status & IFM_AVALID) == 0) {
843 netdev_dev->carrier = true;
846 *carrier = netdev_dev->carrier;
851 /* Retrieves current device stats for 'netdev'. */
853 netdev_bsd_get_stats(const struct netdev *netdev_, struct netdev_stats *stats)
858 struct ifmibdata ifmd;
860 //COVERAGE_INC(netdev_get_stats);
864 mib[2] = NETLINK_GENERIC;
865 mib[3] = IFMIB_SYSTEM;
866 mib[4] = IFMIB_IFCOUNT;
868 len = sizeof(if_count);
870 if (sysctl(mib, 5, &if_count, &len, (void *)0, 0) == -1) {
871 VLOG_DBG_RL(&rl, "%s: sysctl failed: %s",
872 netdev_get_name(netdev_), strerror(errno));
876 mib[5] = IFDATA_GENERAL;
877 mib[3] = IFMIB_IFDATA;
879 for (i = 1; i <= if_count; i++) {
881 if (sysctl(mib, 6, &ifmd, &len, (void *)0, 0) == -1) {
882 VLOG_DBG_RL(&rl, "%s: sysctl failed: %s",
883 netdev_get_name(netdev_), strerror(errno));
885 } else if (!strcmp(ifmd.ifmd_name, netdev_get_name(netdev_))) {
886 stats->rx_packets = ifmd.ifmd_data.ifi_ipackets;
887 stats->tx_packets = ifmd.ifmd_data.ifi_opackets;
888 stats->rx_bytes = ifmd.ifmd_data.ifi_ibytes;
889 stats->tx_bytes = ifmd.ifmd_data.ifi_obytes;
890 stats->rx_errors = ifmd.ifmd_data.ifi_ierrors;
891 stats->tx_errors = ifmd.ifmd_data.ifi_oerrors;
892 stats->rx_dropped = ifmd.ifmd_data.ifi_iqdrops;
893 stats->tx_dropped = 0;
894 stats->multicast = ifmd.ifmd_data.ifi_imcasts;
895 stats->collisions = ifmd.ifmd_data.ifi_collisions;
897 stats->rx_length_errors = 0;
898 stats->rx_over_errors = 0;
899 stats->rx_crc_errors = 0;
900 stats->rx_frame_errors = 0;
901 stats->rx_fifo_errors = 0;
902 stats->rx_missed_errors = 0;
904 stats->tx_aborted_errors = 0;
905 stats->tx_carrier_errors = 0;
906 stats->tx_fifo_errors = 0;
907 stats->tx_heartbeat_errors = 0;
908 stats->tx_window_errors = 0;
917 netdev_bsd_parse_media(int media)
919 uint32_t supported = 0;
920 bool half_duplex = media & IFM_HDX ? true : false;
922 switch (IFM_SUBTYPE(media)) {
927 supported |= half_duplex ? NETDEV_F_10MB_HD : NETDEV_F_10MB_FD;
928 supported |= NETDEV_F_COPPER;
932 supported |= half_duplex ? NETDEV_F_10MB_HD : NETDEV_F_10MB_FD;
933 supported |= NETDEV_F_FIBER;
940 supported |= half_duplex ? NETDEV_F_100MB_HD : NETDEV_F_100MB_FD;
941 supported |= NETDEV_F_COPPER;
945 supported |= half_duplex ? NETDEV_F_100MB_HD : NETDEV_F_100MB_FD;
946 supported |= NETDEV_F_FIBER;
951 supported |= half_duplex ? NETDEV_F_1GB_HD : NETDEV_F_1GB_FD;
952 supported |= NETDEV_F_COPPER;
957 supported |= half_duplex ? NETDEV_F_1GB_HD : NETDEV_F_1GB_FD;
958 supported |= NETDEV_F_FIBER;
962 supported |= NETDEV_F_10GB_FD;
963 supported |= NETDEV_F_COPPER;
968 supported |= NETDEV_F_10GB_FD;
969 supported |= NETDEV_F_FIBER;
976 if (IFM_SUBTYPE(media) == IFM_AUTO) {
977 supported |= NETDEV_F_AUTONEG;
980 if (media & IFM_ETH_FMASK) {
981 supported |= NETDEV_F_PAUSE;
989 * Stores the features supported by 'netdev' into each of '*current',
990 * '*advertised', '*supported', and '*peer' that are non-null. Each value is a
991 * bitmap of "enum ofp_port_features" bits, in host byte order. Returns 0 if
992 * successful, otherwise a positive errno value. On failure, all of the
993 * passed-in values are set to 0.
996 netdev_bsd_get_features(const struct netdev *netdev,
997 enum netdev_features *current, uint32_t *advertised,
998 enum netdev_features *supported, uint32_t *peer)
1000 struct ifmediareq ifmr;
1006 /* XXX Look into SIOCGIFCAP instead of SIOCGIFMEDIA */
1008 memset(&ifmr, 0, sizeof(ifmr));
1009 strncpy(ifmr.ifm_name, netdev_get_name(netdev), sizeof ifmr.ifm_name);
1011 /* We make two SIOCGIFMEDIA ioctl calls. The first to determine the
1012 * number of supported modes, and a second with a buffer to retrieve
1014 if (ioctl(af_inet_sock, SIOCGIFMEDIA, &ifmr) == -1) {
1015 VLOG_DBG_RL(&rl, "%s: ioctl(SIOCGIFMEDIA) failed: %s",
1016 netdev_get_name(netdev), strerror(errno));
1020 media_list = xcalloc(ifmr.ifm_count, sizeof(int));
1021 ifmr.ifm_ulist = media_list;
1023 if (!IFM_TYPE(ifmr.ifm_current) & IFM_ETHER) {
1024 VLOG_DBG_RL(&rl, "%s: doesn't appear to be ethernet",
1025 netdev_get_name(netdev));
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));
1037 /* Current settings. */
1038 *current = netdev_bsd_parse_media(ifmr.ifm_active);
1040 /* Advertised features. */
1041 *advertised = netdev_bsd_parse_media(ifmr.ifm_current);
1043 /* Supported features. */
1045 for (i = 0; i < ifmr.ifm_count; i++) {
1046 *supported |= netdev_bsd_parse_media(ifmr.ifm_ulist[i]);
1049 /* Peer advertisements. */
1050 *peer = 0; /* XXX */
1059 * If 'netdev' has an assigned IPv4 address, sets '*in4' to that address (if
1060 * 'in4' is non-null) and returns true. Otherwise, returns false.
1063 netdev_bsd_get_in4(const struct netdev *netdev_, struct in_addr *in4,
1064 struct in_addr *netmask)
1066 struct netdev_dev_bsd *netdev_dev =
1067 netdev_dev_bsd_cast(netdev_get_dev(netdev_));
1069 if (!(netdev_dev->cache_valid & VALID_IN4)) {
1070 const struct sockaddr_in *sin;
1074 ifr.ifr_addr.sa_family = AF_INET;
1075 error = netdev_bsd_do_ioctl(netdev_, &ifr,
1076 SIOCGIFADDR, "SIOCGIFADDR");
1081 sin = (struct sockaddr_in *) &ifr.ifr_addr;
1082 netdev_dev->in4 = sin->sin_addr;
1083 netdev_dev->cache_valid |= VALID_IN4;
1084 error = netdev_bsd_do_ioctl(netdev_, &ifr,
1085 SIOCGIFNETMASK, "SIOCGIFNETMASK");
1089 *netmask = ((struct sockaddr_in*)&ifr.ifr_addr)->sin_addr;
1091 *in4 = netdev_dev->in4;
1093 return in4->s_addr == INADDR_ANY ? EADDRNOTAVAIL : 0;
1097 * Assigns 'addr' as 'netdev''s IPv4 address and 'mask' as its netmask. If
1098 * 'addr' is INADDR_ANY, 'netdev''s IPv4 address is cleared. Returns a
1099 * positive errno value.
1102 netdev_bsd_set_in4(struct netdev *netdev_, struct in_addr addr,
1103 struct in_addr mask)
1105 struct netdev_dev_bsd *netdev_dev =
1106 netdev_dev_bsd_cast(netdev_get_dev(netdev_));
1109 error = do_set_addr(netdev_, SIOCSIFADDR, "SIOCSIFADDR", addr);
1111 netdev_dev->cache_valid |= VALID_IN4;
1112 netdev_dev->in4 = addr;
1113 if (addr.s_addr != INADDR_ANY) {
1114 error = do_set_addr(netdev_, SIOCSIFNETMASK,
1115 "SIOCSIFNETMASK", mask);
1122 netdev_bsd_get_in6(const struct netdev *netdev_, struct in6_addr *in6)
1124 struct netdev_dev_bsd *netdev_dev =
1125 netdev_dev_bsd_cast(netdev_get_dev(netdev_));
1126 if (!(netdev_dev->cache_valid & VALID_IN6)) {
1127 struct ifaddrs *ifa, *head;
1128 struct sockaddr_in6 *sin6;
1129 const char *netdev_name = netdev_get_name(netdev_);
1131 if (getifaddrs(&head) != 0) {
1132 VLOG_ERR("getifaddrs on %s device failed: %s", netdev_name,
1137 for (ifa = head; ifa; ifa = ifa->ifa_next) {
1138 if (ifa->ifa_addr->sa_family == AF_INET6 &&
1139 !strcmp(ifa->ifa_name, netdev_name)) {
1140 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
1142 memcpy(&netdev_dev->in6, &sin6->sin6_addr, sin6->sin6_len);
1143 netdev_dev->cache_valid |= VALID_IN6;
1144 *in6 = netdev_dev->in6;
1150 return EADDRNOTAVAIL;
1152 *in6 = netdev_dev->in6;
1157 make_in4_sockaddr(struct sockaddr *sa, struct in_addr addr)
1159 struct sockaddr_in sin;
1160 memset(&sin, 0, sizeof sin);
1161 sin.sin_family = AF_INET;
1162 sin.sin_addr = addr;
1165 memset(sa, 0, sizeof *sa);
1166 memcpy(sa, &sin, sizeof sin);
1170 do_set_addr(struct netdev *netdev,
1171 int ioctl_nr, const char *ioctl_name, struct in_addr addr)
1174 make_in4_sockaddr(&ifr.ifr_addr, addr);
1175 return netdev_bsd_do_ioctl(netdev, &ifr, ioctl_nr, ioctl_name);
1179 nd_to_iff_flags(enum netdev_flags nd)
1182 if (nd & NETDEV_UP) {
1185 if (nd & NETDEV_PROMISC) {
1187 iff |= IFF_PPROMISC;
1193 iff_to_nd_flags(int iff)
1195 enum netdev_flags nd = 0;
1199 if (iff & IFF_PROMISC) {
1200 nd |= NETDEV_PROMISC;
1206 netdev_bsd_update_flags(struct netdev *netdev, enum netdev_flags off,
1207 enum netdev_flags on, enum netdev_flags *old_flagsp)
1209 int old_flags, new_flags;
1212 error = get_flags(netdev, &old_flags);
1214 *old_flagsp = iff_to_nd_flags(old_flags);
1215 new_flags = (old_flags & ~nd_to_iff_flags(off)) | nd_to_iff_flags(on);
1216 if (new_flags != old_flags) {
1217 error = set_flags(netdev, new_flags);
1224 netdev_bsd_change_seq(const struct netdev *netdev)
1226 return netdev_dev_bsd_cast(netdev_get_dev(netdev))->change_seq;
1230 const struct netdev_class netdev_bsd_class = {
1236 netdev_bsd_create_system,
1238 NULL, /* get_config */
1239 NULL, /* set_config */
1240 netdev_bsd_open_system,
1246 netdev_bsd_recv_wait,
1250 netdev_bsd_send_wait,
1252 netdev_bsd_set_etheraddr,
1253 netdev_bsd_get_etheraddr,
1256 netdev_bsd_get_ifindex,
1257 netdev_bsd_get_carrier,
1258 NULL, /* get_carrier_resets */
1259 NULL, /* set_miimon_interval */
1260 netdev_bsd_get_stats,
1261 NULL, /* set_stats */
1263 netdev_bsd_get_features,
1264 NULL, /* set_advertisement */
1265 NULL, /* set_policing */
1266 NULL, /* get_qos_type */
1267 NULL, /* get_qos_capabilities */
1270 NULL, /* get_queue */
1271 NULL, /* set_queue */
1272 NULL, /* delete_queue */
1273 NULL, /* get_queue_stats */
1274 NULL, /* dump_queue */
1275 NULL, /* dump_queue_stats */
1280 NULL, /* add_router */
1281 NULL, /* get_next_hop */
1282 NULL, /* get_drv_info */
1283 NULL, /* arp_lookup */
1285 netdev_bsd_update_flags,
1287 netdev_bsd_change_seq
1290 const struct netdev_class netdev_tap_class = {
1296 netdev_bsd_create_tap,
1298 NULL, /* get_config */
1299 NULL, /* set_config */
1300 netdev_bsd_open_system,
1306 netdev_bsd_recv_wait,
1310 netdev_bsd_send_wait,
1312 netdev_bsd_set_etheraddr,
1313 netdev_bsd_get_etheraddr,
1316 netdev_bsd_get_ifindex,
1317 netdev_bsd_get_carrier,
1318 NULL, /* get_carrier_resets */
1319 NULL, /* set_miimon_interval */
1320 netdev_bsd_get_stats,
1321 NULL, /* set_stats */
1323 netdev_bsd_get_features,
1324 NULL, /* set_advertisement */
1325 NULL, /* set_policing */
1326 NULL, /* get_qos_type */
1327 NULL, /* get_qos_capabilities */
1330 NULL, /* get_queue */
1331 NULL, /* set_queue */
1332 NULL, /* delete_queue */
1333 NULL, /* get_queue_stats */
1334 NULL, /* dump_queue */
1335 NULL, /* dump_queue_stats */
1340 NULL, /* add_router */
1341 NULL, /* get_next_hop */
1342 NULL, /* get_drv_info */
1343 NULL, /* arp_lookup */
1345 netdev_bsd_update_flags,
1347 netdev_bsd_change_seq
1352 destroy_tap(int fd, const char *name)
1357 strcpy(ifr.ifr_name, name);
1358 /* XXX What to do if this call fails? */
1359 ioctl(af_inet_sock, SIOCIFDESTROY, &ifr);
1363 get_flags(const struct netdev *netdev, int *flags)
1368 error = netdev_bsd_do_ioctl(netdev, &ifr, SIOCGIFFLAGS, "SIOCGIFFLAGS");
1370 *flags = 0xFFFF0000 & (ifr.ifr_flagshigh << 16);
1371 *flags |= 0x0000FFFF & ifr.ifr_flags;
1377 set_flags(struct netdev *netdev, int flags)
1381 ifr.ifr_flags = 0x0000FFFF & flags;
1382 ifr.ifr_flagshigh = (0xFFFF0000 & flags) >> 16;
1384 return netdev_bsd_do_ioctl(netdev, &ifr, SIOCSIFFLAGS, "SIOCSIFFLAGS");
1388 get_ifindex(const struct netdev *netdev_, int *ifindexp)
1390 struct netdev_dev_bsd *netdev_dev =
1391 netdev_dev_bsd_cast(netdev_get_dev(netdev_));
1393 if (!(netdev_dev->cache_valid & VALID_IFINDEX)) {
1394 int ifindex = if_nametoindex(netdev_get_name(netdev_));
1398 netdev_dev->cache_valid |= VALID_IFINDEX;
1399 netdev_dev->ifindex = ifindex;
1401 *ifindexp = netdev_dev->ifindex;
1406 get_etheraddr(const char *netdev_name, uint8_t ea[ETH_ADDR_LEN])
1408 struct ifaddrs *head;
1409 struct ifaddrs *ifa;
1410 struct sockaddr_dl *sdl;
1412 if (getifaddrs(&head) != 0) {
1413 VLOG_ERR("getifaddrs on %s device failed: %s", netdev_name,
1418 for (ifa = head; ifa; ifa = ifa->ifa_next) {
1419 if (ifa->ifa_addr->sa_family == AF_LINK) {
1420 if (!strcmp(ifa->ifa_name, netdev_name)) {
1421 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
1423 memcpy(ea, LLADDR(sdl), sdl->sdl_alen);
1431 VLOG_ERR("could not find ethernet address for %s device", netdev_name);
1437 set_etheraddr(const char *netdev_name, int hwaddr_family,
1438 int hwaddr_len, const uint8_t mac[ETH_ADDR_LEN])
1442 memset(&ifr, 0, sizeof ifr);
1443 strncpy(ifr.ifr_name, netdev_name, sizeof ifr.ifr_name);
1444 ifr.ifr_addr.sa_family = hwaddr_family;
1445 ifr.ifr_addr.sa_len = hwaddr_len;
1446 memcpy(ifr.ifr_addr.sa_data, mac, hwaddr_len);
1447 //COVERAGE_INC(netdev_set_hwaddr);
1448 if (ioctl(af_inet_sock, SIOCSIFLLADDR, &ifr) < 0) {
1449 VLOG_ERR("ioctl(SIOCSIFLLADDR) on %s device failed: %s",
1450 netdev_name, strerror(errno));
1457 netdev_bsd_do_ioctl(const struct netdev *netdev, struct ifreq *ifr,
1458 unsigned long cmd, const char *cmd_name)
1460 strncpy(ifr->ifr_name, netdev_get_name(netdev), sizeof ifr->ifr_name);
1461 if (ioctl(af_inet_sock, cmd, ifr) == -1) {
1462 VLOG_DBG_RL(&rl, "%s: ioctl(%s) failed: %s",
1463 netdev_get_name(netdev), cmd_name, strerror(errno));