--- /dev/null
+/*
+ * Copyright (c) 2011 Gaetano Catalli.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <config.h>
+
+#include <stdlib.h>
+#include <config.h>
+#include <assert.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <sys/sockio.h>
+#include <ifaddrs.h>
+#include <pcap/pcap.h>
+#include <net/if.h>
+#include <net/if_dl.h>
+#include <net/if_media.h>
+#include <net/if_tap.h>
+#include <netinet/in.h>
+#include <net/if_mib.h>
+#include <poll.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/sysctl.h>
+
+#include "rtbsd.h"
+#include "coverage.h"
+#include "dynamic-string.h"
+#include "fatal-signal.h"
+#include "netdev-provider.h"
+#include "ofpbuf.h"
+#include "openflow/openflow.h"
+#include "packets.h"
+#include "poll-loop.h"
+#include "socket-util.h"
+#include "shash.h"
+#include "svec.h"
+#include "vlog.h"
+
+VLOG_DEFINE_THIS_MODULE(netdev_bsd);
+
+\f
+/*
+ * This file implements objects to access interfaces.
+ * Externally, interfaces are represented by two structures:
+ * + struct netdev_dev, representing a network device,
+ * containing e.g. name and a refcount;
+ * We can have private variables by embedding the
+ * struct netdev_dev into our own structure
+ * (e.g. netdev_dev_bsd)
+ *
+ * + struct netdev, representing an instance of an open netdev_dev.
+ * The structure contains a pointer to the 'struct netdev'
+ * representing the device. Again, private information
+ * such as file descriptor etc. are stored in our
+ * own struct netdev_bsd which includes a struct netdev.
+ *
+ * Both 'struct netdev' and 'struct netdev_dev' are referenced
+ * in containers which hold pointers to the data structures.
+ * We can reach our own struct netdev_XXX_bsd by putting a
+ * struct netdev_XXX within our own struct, and using CONTAINER_OF
+ * to access the parent structure.
+ */
+struct netdev_bsd {
+ struct netdev netdev;
+
+ int netdev_fd; /* Selectable file descriptor for the network device.
+ This descriptor will be used for polling operations */
+
+ pcap_t *pcap_handle; /* Packet capture descriptor for a system network
+ device */
+};
+
+struct netdev_dev_bsd {
+ struct netdev_dev netdev_dev;
+ unsigned int cache_valid;
+ unsigned int change_seq;
+
+ int ifindex;
+ uint8_t etheraddr[ETH_ADDR_LEN];
+ struct in_addr in4;
+ struct in6_addr in6;
+ int mtu;
+ int carrier;
+
+ bool tap_opened;
+ int tap_fd; /* TAP character device, if any */
+};
+
+
+enum {
+ VALID_IFINDEX = 1 << 0,
+ VALID_ETHERADDR = 1 << 1,
+ VALID_IN4 = 1 << 2,
+ VALID_IN6 = 1 << 3,
+ VALID_MTU = 1 << 4,
+ VALID_CARRIER = 1 << 5
+};
+
+/* An AF_INET socket (used for ioctl operations). */
+static int af_inet_sock = -1;
+
+#define PCAP_SNAPLEN 2048
+
+
+/*
+ * Notifier used to invalidate device informations in case of status change.
+ *
+ * It will be registered with a 'rtbsd_notifier_register()' when the first
+ * device will be created with the call of either 'netdev_bsd_tap_create()' or
+ * 'netdev_bsd_system_create()'.
+ *
+ * The callback associated with this notifier ('netdev_bsd_cache_cb()') will
+ * invalidate cached information about the device.
+ */
+static struct rtbsd_notifier netdev_bsd_cache_notifier;
+static int cache_notifier_refcount;
+
+static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20);
+
+static int netdev_bsd_do_ioctl(const struct netdev *, struct ifreq *,
+ unsigned long cmd, const char *cmd_name);
+static void destroy_tap(int fd, const char *name);
+static int get_flags(const struct netdev *, int *flagsp);
+static int set_flags(struct netdev *, int flags);
+static int do_set_addr(struct netdev *netdev,
+ int ioctl_nr, const char *ioctl_name,
+ struct in_addr addr);
+static int get_etheraddr(const char *netdev_name, uint8_t ea[ETH_ADDR_LEN]);
+static int set_etheraddr(const char *netdev_name, int hwaddr_family,
+ int hwaddr_len, const uint8_t[ETH_ADDR_LEN]);
+static int get_ifindex(const struct netdev *, int *ifindexp);
+
+static int netdev_bsd_init(void);
+
+static bool
+is_netdev_bsd_class(const struct netdev_class *netdev_class)
+{
+ return netdev_class->init == netdev_bsd_init;
+}
+
+static struct netdev_bsd *
+netdev_bsd_cast(const struct netdev *netdev)
+{
+ assert(is_netdev_bsd_class(netdev_dev_get_class(netdev_get_dev(netdev))));
+ return CONTAINER_OF(netdev, struct netdev_bsd, netdev);
+}
+
+static struct netdev_dev_bsd *
+netdev_dev_bsd_cast(const struct netdev_dev *netdev_dev)
+{
+ assert(is_netdev_bsd_class(netdev_dev_get_class(netdev_dev)));
+ return CONTAINER_OF(netdev_dev, struct netdev_dev_bsd, netdev_dev);
+}
+
+/* Initialize the AF_INET socket used for ioctl operations */
+static int
+netdev_bsd_init(void)
+{
+ static int status = -1;
+
+ if (status >= 0) { /* already initialized */
+ return status;
+ }
+
+ af_inet_sock = socket(AF_INET, SOCK_DGRAM, 0);
+ status = af_inet_sock >= 0 ? 0 : errno;
+
+ if (status) {
+ VLOG_ERR("failed to create inet socket: %s", strerror(status));
+ }
+
+ return status;
+}
+
+/*
+ * Perform periodic work needed by netdev. In BSD netdevs it checks for any
+ * interface status changes, and eventually calls all the user callbacks.
+ */
+static void
+netdev_bsd_run(void)
+{
+ rtbsd_notifier_run();
+}
+
+/*
+ * Arranges for poll_block() to wake up if the "run" member function needs to
+ * be called.
+ */
+static void
+netdev_bsd_wait(void)
+{
+ rtbsd_notifier_wait();
+}
+
+static void
+netdev_dev_bsd_changed(struct netdev_dev_bsd *dev)
+{
+ dev->change_seq++;
+ if (!dev->change_seq) {
+ dev->change_seq++;
+ }
+}
+
+/* Invalidate cache in case of interface status change. */
+static void
+netdev_bsd_cache_cb(const struct rtbsd_change *change,
+ void *aux OVS_UNUSED)
+{
+ struct netdev_dev_bsd *dev;
+
+ if (change) {
+ struct netdev_dev *base_dev = netdev_dev_from_name(change->if_name);
+
+ if (base_dev) {
+ const struct netdev_class *netdev_class =
+ netdev_dev_get_class(base_dev);
+
+ if (is_netdev_bsd_class(netdev_class)) {
+ dev = netdev_dev_bsd_cast(base_dev);
+ dev->cache_valid = 0;
+ netdev_dev_bsd_changed(dev);
+ }
+ }
+ } else {
+ /*
+ * XXX the API is lacking, we should be able to iterate on the list of
+ * netdevs without having to store the info in a temp shash.
+ */
+ struct shash device_shash;
+ struct shash_node *node;
+
+ shash_init(&device_shash);
+ netdev_dev_get_devices(&netdev_bsd_class, &device_shash);
+ SHASH_FOR_EACH (node, &device_shash) {
+ dev = node->data;
+ dev->cache_valid = 0;
+ netdev_dev_bsd_changed(dev);
+ }
+ shash_destroy(&device_shash);
+ }
+}
+
+static int
+cache_notifier_ref(void)
+{
+ int ret = 0;
+
+ if (!cache_notifier_refcount) {
+ ret = rtbsd_notifier_register(&netdev_bsd_cache_notifier,
+ netdev_bsd_cache_cb, NULL);
+ if (ret) {
+ return ret;
+ }
+ }
+ cache_notifier_refcount++;
+ return 0;
+}
+
+static int
+cache_notifier_unref(void)
+{
+ cache_notifier_refcount--;
+ if (cache_notifier_refcount == 0) {
+ rtbsd_notifier_unregister(&netdev_bsd_cache_notifier);
+ }
+ return 0;
+}
+
+/* Allocate a netdev_dev_bsd structure */
+static int
+netdev_bsd_create_system(const struct netdev_class *class, const char *name,
+ struct netdev_dev **netdev_devp)
+{
+ struct netdev_dev_bsd *netdev_dev;
+ int error;
+
+ error = cache_notifier_ref();
+ if (error) {
+ return error;
+ }
+
+ netdev_dev = xzalloc(sizeof *netdev_dev);
+ netdev_dev->change_seq = 1;
+ netdev_dev_init(&netdev_dev->netdev_dev, name, class);
+ *netdev_devp = &netdev_dev->netdev_dev;
+
+ return 0;
+}
+
+/*
+ * Allocate a netdev_dev_bsd structure with 'tap' class.
+ */
+static int
+netdev_bsd_create_tap(const struct netdev_class *class, const char *name,
+ struct netdev_dev **netdev_devp)
+{
+ struct netdev_dev_bsd *netdev_dev = NULL;
+ int error = 0;
+ struct ifreq ifr;
+
+ error = cache_notifier_ref();
+ if (error) {
+ goto error;
+ }
+
+ /* allocate the device structure and set the internal flag */
+ netdev_dev = xzalloc(sizeof *netdev_dev);
+
+ memset(&ifr, 0, sizeof(ifr));
+
+ /* Create a tap device by opening /dev/tap. The TAPGIFNAME ioctl is used
+ * to retrieve the name of the tap device. */
+ netdev_dev->tap_fd = open("/dev/tap", O_RDWR);
+ netdev_dev->change_seq = 1;
+ if (netdev_dev->tap_fd < 0) {
+ error = errno;
+ VLOG_WARN("opening \"/dev/tap\" failed: %s", strerror(error));
+ goto error_undef_notifier;
+ }
+
+ /* Retrieve tap name (e.g. tap0) */
+ if (ioctl(netdev_dev->tap_fd, TAPGIFNAME, &ifr) == -1) {
+ /* XXX Need to destroy the device? */
+ error = errno;
+ goto error_undef_notifier;
+ }
+
+ /* Change the name of the tap device */
+ ifr.ifr_data = (void *)name;
+ if (ioctl(af_inet_sock, SIOCSIFNAME, &ifr) == -1) {
+ error = errno;
+ destroy_tap(netdev_dev->tap_fd, ifr.ifr_name);
+ goto error_undef_notifier;
+ }
+
+ /* set non-blocking. */
+ error = set_nonblocking(netdev_dev->tap_fd);
+ if (error) {
+ destroy_tap(netdev_dev->tap_fd, name);
+ goto error_undef_notifier;
+ }
+
+ /* Turn device UP */
+ ifr.ifr_flags = (uint16_t)IFF_UP;
+ ifr.ifr_flagshigh = 0;
+ strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
+ if (ioctl(af_inet_sock, SIOCSIFFLAGS, &ifr) == -1) {
+ error = errno;
+ destroy_tap(netdev_dev->tap_fd, name);
+ goto error_undef_notifier;
+ }
+
+ /* initialize the device structure and
+ * link the structure to its netdev */
+ netdev_dev_init(&netdev_dev->netdev_dev, name, class);
+ *netdev_devp = &netdev_dev->netdev_dev;
+
+ return 0;
+
+error_undef_notifier:
+ cache_notifier_unref();
+error:
+ free(netdev_dev);
+ return error;
+}
+
+static void
+netdev_bsd_destroy(struct netdev_dev *netdev_dev_)
+{
+ struct netdev_dev_bsd *netdev_dev = netdev_dev_bsd_cast(netdev_dev_);
+
+ cache_notifier_unref();
+
+ if (netdev_dev->tap_fd >= 0 &&
+ !strcmp(netdev_dev_get_type(netdev_dev_), "tap")) {
+ destroy_tap(netdev_dev->tap_fd, netdev_dev_get_name(netdev_dev_));
+ }
+ free(netdev_dev);
+}
+
+
+static int
+netdev_bsd_open_system(struct netdev_dev *netdev_dev_, struct netdev **netdevp)
+{
+ struct netdev_dev_bsd *netdev_dev = netdev_dev_bsd_cast(netdev_dev_);
+ struct netdev_bsd *netdev;
+ int error;
+ enum netdev_flags flags;
+
+ /* Allocate network device. */
+ netdev = xcalloc(1, sizeof *netdev);
+ netdev->netdev_fd = -1;
+ netdev_init(&netdev->netdev, netdev_dev_);
+
+ /* Verify that the netdev really exists by attempting to read its flags */
+ error = netdev_get_flags(&netdev->netdev, &flags);
+ if (error == ENXIO) {
+ goto error;
+ }
+
+ /* The first user that opens a tap port(from dpif_create_and_open()) will
+ * receive the file descriptor associated with the tap device. Instead, the
+ * following users will open the tap device as a normal 'system' device. */
+ if (!strcmp(netdev_dev_get_type(netdev_dev_), "tap") &&
+ !netdev_dev->tap_opened) {
+ netdev_dev->tap_opened = true;
+ netdev->netdev_fd = netdev_dev->tap_fd;
+ }
+
+ *netdevp = &netdev->netdev;
+ return 0;
+
+error:
+ netdev_uninit(&netdev->netdev, true);
+ return error;
+}
+
+
+
+/* Close a 'netdev'. */
+static void
+netdev_bsd_close(struct netdev *netdev_)
+{
+ struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
+
+ if (netdev->netdev_fd >= 0 && strcmp(netdev_get_type(netdev_), "tap")) {
+ pcap_close(netdev->pcap_handle);
+ }
+
+ free(netdev);
+}
+
+static int
+netdev_bsd_listen(struct netdev *netdev_)
+{
+ struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
+ char errbuf[PCAP_ERRBUF_SIZE];
+ int error;
+ int fd;
+ int one = 1;
+
+ if (netdev->netdev_fd >= 0) {
+ return 0;
+ }
+
+ /* open the pcap device. The device is opened in non-promiscuous mode
+ * because the interface flags are manually set by the caller. */
+ errbuf[0] = '\0';
+ netdev->pcap_handle = pcap_open_live(netdev_get_name(netdev_), PCAP_SNAPLEN,
+ 0, 1000, errbuf);
+ if (netdev->pcap_handle == NULL) {
+ VLOG_ERR("%s: pcap_open_live failed: %s",
+ netdev_get_name(netdev_), errbuf);
+ error = EIO;
+ goto error;
+ } else if (errbuf[0] != '\0') {
+ VLOG_WARN("%s: pcap_open_live: %s",
+ netdev_get_name(netdev_), errbuf);
+ }
+
+ netdev_dev_bsd_changed(netdev_dev_bsd_cast(netdev_get_dev(netdev_)));
+
+ /* initialize netdev->netdev_fd */
+ fd = pcap_get_selectable_fd(netdev->pcap_handle);
+ if (fd == -1) {
+ error = errno;
+ goto error;
+ }
+
+ /* Set non-blocking mode. Also the BIOCIMMEDIATE ioctl must be called
+ * on the file descriptor returned by pcap_get_selectable_fd to achieve
+ * a real non-blocking behaviour.*/
+ error = pcap_setnonblock(netdev->pcap_handle, 1, errbuf);
+ if (error == -1) {
+ error = errno;
+ goto error;
+ }
+
+ /* This call assure that reads return immediately upon packet reception.
+ * Otherwise, a read will block until either the kernel buffer becomes
+ * full or a timeout occurs. */
+ if(ioctl(fd, BIOCIMMEDIATE, &one) < 0 ) {
+ VLOG_ERR("ioctl(BIOCIMMEDIATE) on %s device failed: %s",
+ netdev_get_name(netdev_), strerror(errno));
+ error = errno;
+ goto error;
+ }
+
+ /* Capture only incoming packets */
+ error = pcap_setdirection(netdev->pcap_handle, PCAP_D_IN);
+ if (error == -1) {
+ error = errno;
+ goto error;
+ }
+
+ netdev->netdev_fd = fd;
+ return 0;
+
+error:
+ if (fd >= 0) {
+ close(netdev->netdev_fd);
+ }
+ return error;
+}
+
+
+/* The recv callback of the netdev class returns the number of bytes of the
+ * received packet.
+ *
+ * This can be done by the pcap_next() function. Unfortunately pcap_next() does
+ * not make difference between a missing packet on the capture interface and
+ * an error during the file capture. We can use the pcap_dispatch() function
+ * instead, which is able to distinguish between errors and null packet.
+ *
+ * To make pcap_dispatch() returns the number of bytes read from the interface
+ * we need to define the following callback and argument.
+ */
+struct pcap_arg {
+ void *data;
+ int size;
+ int retval;
+};
+
+/*
+ * This callback will be executed on every captured packet.
+ *
+ * If the packet captured by pcap_dispatch() does not fit the pcap buffer,
+ * pcap returns a truncated packet and we follow this behavior.
+ *
+ * The argument args->retval is the packet size in bytes.
+ */
+static void
+proc_pkt(u_char *args_, const struct pcap_pkthdr *hdr, const u_char *packet)
+{
+ struct pcap_arg *args = (struct pcap_arg *)args_;
+
+ if (args->size < hdr->len) {
+ VLOG_WARN_RL(&rl, "packet truncated");
+ args->retval = args->size;
+ } else {
+ args->retval = hdr->len;
+ }
+
+ /* copy the packet to our buffer */
+ memcpy(args->data, packet, args->retval);
+}
+
+/*
+ * This function attempts to receive a packet from the specified network
+ * device. It is assumed that the network device is a system device or a tap
+ * device opened as a system one. In this case the read operation is performed
+ * on the 'netdev' pcap descriptor.
+ */
+static int
+netdev_bsd_recv_system(struct netdev_bsd *netdev, void *data, size_t size)
+{
+ struct pcap_arg arg;
+ int ret;
+
+ if (netdev->netdev_fd < 0) {
+ return -EAGAIN;
+ }
+
+ /* prepare the pcap argument to store the packet */
+ arg.size = size;
+ arg.data = data;
+
+ for (;;) {
+ ret = pcap_dispatch(netdev->pcap_handle, 1, proc_pkt, (u_char *)&arg);
+
+ if (ret > 0) {
+ return arg.retval; /* arg.retval < 0 is handled in the caller */
+ }
+ if (ret == -1) {
+ if (errno == EINTR) {
+ continue;
+ }
+ }
+
+ return -EAGAIN;
+ }
+}
+
+/*
+ * This function attempts to receive a packet from the specified network
+ * device. It is assumed that the network device is a tap device and the
+ * 'netdev_fd' member of the 'netdev' structure is initialized with the tap
+ * file descriptor.
+ */
+static int
+netdev_bsd_recv_tap(struct netdev_bsd *netdev, void *data, size_t size)
+{
+ if (netdev->netdev_fd < 0) {
+ return -EAGAIN;
+ }
+
+ for (;;) {
+ ssize_t retval = read(netdev->netdev_fd, data, size);
+ if (retval >= 0) {
+ return retval;
+ } else if (errno != EINTR) {
+ if (errno != EAGAIN) {
+ VLOG_WARN_RL(&rl, "error receiving Ethernet packet on %s: %s",
+ strerror(errno), netdev->netdev.netdev_dev->name);
+ }
+ return -errno;
+ }
+ }
+}
+
+
+/*
+ * According with the nature of the device a different function must be called.
+ * If the device is the bridge local port the 'netdev_bsd_recv_tap' function
+ * must be called, otherwise the 'netdev_bsd_recv_system' function is called.
+ *
+ * type!="tap" ---> system device.
+ * type=="tap" && netdev_fd == tap_fd ---> internal tap device
+ * type=="tap" && netdev_fd != tap_fd ---> internal tap device
+ * opened as a system
+ * device.
+ */
+static int
+netdev_bsd_recv(struct netdev *netdev_, void* data, size_t size)
+{
+ struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
+ struct netdev_dev_bsd * netdev_dev =
+ netdev_dev_bsd_cast(netdev_get_dev(netdev_));
+
+ if (!strcmp(netdev_get_type(netdev_), "tap") &&
+ netdev->netdev_fd == netdev_dev->tap_fd) {
+ return netdev_bsd_recv_tap(netdev, data, size);
+ } else {
+ return netdev_bsd_recv_system(netdev, data, size);
+ }
+}
+
+
+/*
+ * Registers with the poll loop to wake up from the next call to poll_block()
+ * when a packet is ready to be received with netdev_recv() on 'netdev'.
+ */
+static void
+netdev_bsd_recv_wait(struct netdev *netdev_)
+{
+ struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
+
+ if (netdev->netdev_fd >= 0) {
+ poll_fd_wait(netdev->netdev_fd, POLLIN);
+ }
+}
+
+/* Discards all packets waiting to be received from 'netdev'. */
+static int
+netdev_bsd_drain(struct netdev *netdev_)
+{
+ struct ifreq ifr;
+ struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
+
+ strcpy(ifr.ifr_name, netdev_get_name(netdev_));
+ if (ioctl(netdev->netdev_fd, BIOCFLUSH, &ifr) == -1) {
+ VLOG_DBG_RL(&rl, "%s: ioctl(BIOCFLUSH) failed: %s",
+ netdev_get_name(netdev_), strerror(errno));
+ return errno;
+ }
+ return 0;
+}
+
+/*
+ * Send a packet on the specified network device. The device could be either a
+ * system or a tap device.
+ */
+static int
+netdev_bsd_send(struct netdev *netdev_, const void *data, size_t size)
+{
+ struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
+ struct netdev_dev_bsd * netdev_dev =
+ netdev_dev_bsd_cast(netdev_get_dev(netdev_));
+
+ if (netdev->netdev_fd < 0) {
+ return EPIPE;
+ }
+
+ for (;;) {
+ ssize_t retval;
+ if (!strcmp(netdev_get_type(netdev_), "tap") &&
+ netdev_dev->tap_fd == netdev->netdev_fd) {
+ retval = write(netdev->netdev_fd, data, size);
+ } else {
+ retval = pcap_inject(netdev->pcap_handle, data, size);
+ }
+ if (retval < 0) {
+ if (errno == EINTR) {
+ continue;
+ } else if (errno != EAGAIN) {
+ VLOG_WARN_RL(&rl, "error sending Ethernet packet on %s: %s",
+ netdev_get_name(netdev_), strerror(errno));
+ }
+ return errno;
+ } else if (retval != size) {
+ VLOG_WARN_RL(&rl, "sent partial Ethernet packet (%zd bytes of "
+ "%zu) on %s", retval, size,
+ netdev_get_name(netdev_));
+ return EMSGSIZE;
+ } else {
+ return 0;
+ }
+ }
+}
+
+/*
+ * Registers with the poll loop to wake up from the next call to poll_block()
+ * when the packet transmission queue has sufficient room to transmit a packet
+ * with netdev_send().
+ */
+static void
+netdev_bsd_send_wait(struct netdev *netdev_)
+{
+ struct netdev_bsd *netdev = netdev_bsd_cast(netdev_);
+
+ if (netdev->netdev_fd < 0) { /* Nothing to do. */
+ return;
+ }
+
+ if (strcmp(netdev_get_type(netdev_), "tap")) {
+ poll_fd_wait(netdev->netdev_fd, POLLOUT);
+ } else {
+ /* TAP device always accepts packets. */
+ poll_immediate_wake();
+ }
+}
+
+/*
+ * Attempts to set 'netdev''s MAC address to 'mac'. Returns 0 if successful,
+ * otherwise a positive errno value.
+ */
+static int
+netdev_bsd_set_etheraddr(struct netdev *netdev_,
+ const uint8_t mac[ETH_ADDR_LEN])
+{
+ struct netdev_dev_bsd *netdev_dev =
+ netdev_dev_bsd_cast(netdev_get_dev(netdev_));
+ int error;
+
+ if (!(netdev_dev->cache_valid & VALID_ETHERADDR)
+ || !eth_addr_equals(netdev_dev->etheraddr, mac)) {
+ error = set_etheraddr(netdev_get_name(netdev_), AF_LINK, ETH_ADDR_LEN,
+ mac);
+ if (!error) {
+ netdev_dev->cache_valid |= VALID_ETHERADDR;
+ memcpy(netdev_dev->etheraddr, mac, ETH_ADDR_LEN);
+ netdev_dev_bsd_changed(netdev_dev);
+ }
+ } else {
+ error = 0;
+ }
+ return error;
+}
+
+/*
+ * Returns a pointer to 'netdev''s MAC address. The caller must not modify or
+ * free the returned buffer.
+ */
+static int
+netdev_bsd_get_etheraddr(const struct netdev *netdev_,
+ uint8_t mac[ETH_ADDR_LEN])
+{
+ struct netdev_dev_bsd *netdev_dev =
+ netdev_dev_bsd_cast(netdev_get_dev(netdev_));
+
+ if (!(netdev_dev->cache_valid & VALID_ETHERADDR)) {
+ int error = get_etheraddr(netdev_get_name(netdev_),
+ netdev_dev->etheraddr);
+ if (error) {
+ return error;
+ }
+ netdev_dev->cache_valid |= VALID_ETHERADDR;
+ }
+ memcpy(mac, netdev_dev->etheraddr, ETH_ADDR_LEN);
+
+ return 0;
+}
+
+/*
+ * Returns the maximum size of transmitted (and received) packets on 'netdev',
+ * in bytes, not including the hardware header; thus, this is typically 1500
+ * bytes for Ethernet devices.
+ */
+static int
+netdev_bsd_get_mtu(const struct netdev *netdev_, int *mtup)
+{
+ struct netdev_dev_bsd *netdev_dev =
+ netdev_dev_bsd_cast(netdev_get_dev(netdev_));
+
+ if (!(netdev_dev->cache_valid & VALID_MTU)) {
+ struct ifreq ifr;
+ int error;
+
+ error = netdev_bsd_do_ioctl(netdev_, &ifr, SIOCGIFMTU, "SIOCGIFMTU");
+ if (error) {
+ return error;
+ }
+ netdev_dev->mtu = ifr.ifr_mtu;
+ netdev_dev->cache_valid |= VALID_MTU;
+ }
+
+ *mtup = netdev_dev->mtu;
+ return 0;
+}
+
+static int
+netdev_bsd_get_ifindex(const struct netdev *netdev)
+{
+ int ifindex, error;
+
+ error = get_ifindex(netdev, &ifindex);
+ return error ? -error : ifindex;
+}
+
+static int
+netdev_bsd_get_carrier(const struct netdev *netdev_, bool *carrier)
+{
+ struct netdev_dev_bsd *netdev_dev =
+ netdev_dev_bsd_cast(netdev_get_dev(netdev_));
+
+ if (!(netdev_dev->cache_valid & VALID_CARRIER)) {
+ struct ifmediareq ifmr;
+
+ memset(&ifmr, 0, sizeof(ifmr));
+ strncpy(ifmr.ifm_name, netdev_get_name(netdev_), sizeof ifmr.ifm_name);
+
+ if (ioctl(af_inet_sock, SIOCGIFMEDIA, &ifmr) == -1) {
+ VLOG_DBG_RL(&rl, "%s: ioctl(SIOCGIFMEDIA) failed: %s",
+ netdev_get_name(netdev_), strerror(errno));
+ return errno;
+ }
+
+ netdev_dev->carrier = (ifmr.ifm_status & IFM_ACTIVE) == IFM_ACTIVE;
+ netdev_dev->cache_valid |= VALID_CARRIER;
+
+ /* If the interface doesn't report whether the media is active,
+ * just assume it is active. */
+ if ((ifmr.ifm_status & IFM_AVALID) == 0) {
+ netdev_dev->carrier = true;
+ }
+ }
+ *carrier = netdev_dev->carrier;
+
+ return 0;
+}
+
+/* Retrieves current device stats for 'netdev'. */
+static int
+netdev_bsd_get_stats(const struct netdev *netdev_, struct netdev_stats *stats)
+{
+ int if_count, i;
+ int mib[6];
+ size_t len;
+ struct ifmibdata ifmd;
+
+
+ mib[0] = CTL_NET;
+ mib[1] = PF_LINK;
+ mib[2] = NETLINK_GENERIC;
+ mib[3] = IFMIB_SYSTEM;
+ mib[4] = IFMIB_IFCOUNT;
+
+ len = sizeof(if_count);
+
+ if (sysctl(mib, 5, &if_count, &len, (void *)0, 0) == -1) {
+ VLOG_DBG_RL(&rl, "%s: sysctl failed: %s",
+ netdev_get_name(netdev_), strerror(errno));
+ return errno;
+ }
+
+ mib[5] = IFDATA_GENERAL;
+ mib[3] = IFMIB_IFDATA;
+ len = sizeof(ifmd);
+ for (i = 1; i <= if_count; i++) {
+ mib[4] = i; //row
+ if (sysctl(mib, 6, &ifmd, &len, (void *)0, 0) == -1) {
+ VLOG_DBG_RL(&rl, "%s: sysctl failed: %s",
+ netdev_get_name(netdev_), strerror(errno));
+ return errno;
+ } else if (!strcmp(ifmd.ifmd_name, netdev_get_name(netdev_))) {
+ stats->rx_packets = ifmd.ifmd_data.ifi_ipackets;
+ stats->tx_packets = ifmd.ifmd_data.ifi_opackets;
+ stats->rx_bytes = ifmd.ifmd_data.ifi_ibytes;
+ stats->tx_bytes = ifmd.ifmd_data.ifi_obytes;
+ stats->rx_errors = ifmd.ifmd_data.ifi_ierrors;
+ stats->tx_errors = ifmd.ifmd_data.ifi_oerrors;
+ stats->rx_dropped = ifmd.ifmd_data.ifi_iqdrops;
+ stats->tx_dropped = 0;
+ stats->multicast = ifmd.ifmd_data.ifi_imcasts;
+ stats->collisions = ifmd.ifmd_data.ifi_collisions;
+
+ stats->rx_length_errors = 0;
+ stats->rx_over_errors = 0;
+ stats->rx_crc_errors = 0;
+ stats->rx_frame_errors = 0;
+ stats->rx_fifo_errors = 0;
+ stats->rx_missed_errors = 0;
+
+ stats->tx_aborted_errors = 0;
+ stats->tx_carrier_errors = 0;
+ stats->tx_fifo_errors = 0;
+ stats->tx_heartbeat_errors = 0;
+ stats->tx_window_errors = 0;
+ break;
+ }
+ }
+
+ return 0;
+}
+
+static uint32_t
+netdev_bsd_parse_media(int media)
+{
+ uint32_t supported = 0;
+ bool half_duplex = media & IFM_HDX ? true : false;
+
+ switch (IFM_SUBTYPE(media)) {
+ case IFM_10_2:
+ case IFM_10_5:
+ case IFM_10_STP:
+ case IFM_10_T:
+ supported |= half_duplex ? NETDEV_F_10MB_HD : NETDEV_F_10MB_FD;
+ supported |= NETDEV_F_COPPER;
+ break;
+
+ case IFM_10_FL:
+ supported |= half_duplex ? NETDEV_F_10MB_HD : NETDEV_F_10MB_FD;
+ supported |= NETDEV_F_FIBER;
+ break;
+
+ case IFM_100_T2:
+ case IFM_100_T4:
+ case IFM_100_TX:
+ case IFM_100_VG:
+ supported |= half_duplex ? NETDEV_F_100MB_HD : NETDEV_F_100MB_FD;
+ supported |= NETDEV_F_COPPER;
+ break;
+
+ case IFM_100_FX:
+ supported |= half_duplex ? NETDEV_F_100MB_HD : NETDEV_F_100MB_FD;
+ supported |= NETDEV_F_FIBER;
+ break;
+
+ case IFM_1000_CX:
+ case IFM_1000_T:
+ supported |= half_duplex ? NETDEV_F_1GB_HD : NETDEV_F_1GB_FD;
+ supported |= NETDEV_F_COPPER;
+ break;
+
+ case IFM_1000_LX:
+ case IFM_1000_SX:
+ supported |= half_duplex ? NETDEV_F_1GB_HD : NETDEV_F_1GB_FD;
+ supported |= NETDEV_F_FIBER;
+ break;
+
+ case IFM_10G_CX4:
+ supported |= NETDEV_F_10GB_FD;
+ supported |= NETDEV_F_COPPER;
+ break;
+
+ case IFM_10G_LR:
+ case IFM_10G_SR:
+ supported |= NETDEV_F_10GB_FD;
+ supported |= NETDEV_F_FIBER;
+ break;
+
+ default:
+ return 0;
+ }
+
+ if (IFM_SUBTYPE(media) == IFM_AUTO) {
+ supported |= NETDEV_F_AUTONEG;
+ }
+ /*
+ if (media & IFM_ETH_FMASK) {
+ supported |= NETDEV_F_PAUSE;
+ }
+ */
+
+ return supported;
+}
+
+/*
+ * Stores the features supported by 'netdev' into each of '*current',
+ * '*advertised', '*supported', and '*peer' that are non-null. Each value is a
+ * bitmap of "enum ofp_port_features" bits, in host byte order. Returns 0 if
+ * successful, otherwise a positive errno value. On failure, all of the
+ * passed-in values are set to 0.
+ */
+static int
+netdev_bsd_get_features(const struct netdev *netdev,
+ enum netdev_features *current, uint32_t *advertised,
+ enum netdev_features *supported, uint32_t *peer)
+{
+ struct ifmediareq ifmr;
+ int *media_list;
+ int i;
+ int error;
+
+
+ /* XXX Look into SIOCGIFCAP instead of SIOCGIFMEDIA */
+
+ memset(&ifmr, 0, sizeof(ifmr));
+ strncpy(ifmr.ifm_name, netdev_get_name(netdev), sizeof ifmr.ifm_name);
+
+ /* We make two SIOCGIFMEDIA ioctl calls. The first to determine the
+ * number of supported modes, and a second with a buffer to retrieve
+ * them. */
+ if (ioctl(af_inet_sock, SIOCGIFMEDIA, &ifmr) == -1) {
+ VLOG_DBG_RL(&rl, "%s: ioctl(SIOCGIFMEDIA) failed: %s",
+ netdev_get_name(netdev), strerror(errno));
+ return errno;
+ }
+
+ media_list = xcalloc(ifmr.ifm_count, sizeof(int));
+ ifmr.ifm_ulist = media_list;
+
+ if (!IFM_TYPE(ifmr.ifm_current) & IFM_ETHER) {
+ VLOG_DBG_RL(&rl, "%s: doesn't appear to be ethernet",
+ netdev_get_name(netdev));
+ error = EINVAL;
+ goto cleanup;
+ }
+
+ if (ioctl(af_inet_sock, SIOCGIFMEDIA, &ifmr) == -1) {
+ VLOG_DBG_RL(&rl, "%s: ioctl(SIOCGIFMEDIA) failed: %s",
+ netdev_get_name(netdev), strerror(errno));
+ error = errno;
+ goto cleanup;
+ }
+
+ /* Current settings. */
+ *current = netdev_bsd_parse_media(ifmr.ifm_active);
+
+ /* Advertised features. */
+ *advertised = netdev_bsd_parse_media(ifmr.ifm_current);
+
+ /* Supported features. */
+ *supported = 0;
+ for (i = 0; i < ifmr.ifm_count; i++) {
+ *supported |= netdev_bsd_parse_media(ifmr.ifm_ulist[i]);
+ }
+
+ /* Peer advertisements. */
+ *peer = 0; /* XXX */
+
+ error = 0;
+cleanup:
+ free(media_list);
+ return error;
+}
+
+/*
+ * If 'netdev' has an assigned IPv4 address, sets '*in4' to that address (if
+ * 'in4' is non-null) and returns true. Otherwise, returns false.
+ */
+static int
+netdev_bsd_get_in4(const struct netdev *netdev_, struct in_addr *in4,
+ struct in_addr *netmask)
+{
+ struct netdev_dev_bsd *netdev_dev =
+ netdev_dev_bsd_cast(netdev_get_dev(netdev_));
+
+ if (!(netdev_dev->cache_valid & VALID_IN4)) {
+ const struct sockaddr_in *sin;
+ struct ifreq ifr;
+ int error;
+
+ ifr.ifr_addr.sa_family = AF_INET;
+ error = netdev_bsd_do_ioctl(netdev_, &ifr,
+ SIOCGIFADDR, "SIOCGIFADDR");
+ if (error) {
+ return error;
+ }
+
+ sin = (struct sockaddr_in *) &ifr.ifr_addr;
+ netdev_dev->in4 = sin->sin_addr;
+ netdev_dev->cache_valid |= VALID_IN4;
+ error = netdev_bsd_do_ioctl(netdev_, &ifr,
+ SIOCGIFNETMASK, "SIOCGIFNETMASK");
+ if (error) {
+ return error;
+ }
+ *netmask = ((struct sockaddr_in*)&ifr.ifr_addr)->sin_addr;
+ }
+ *in4 = netdev_dev->in4;
+
+ return in4->s_addr == INADDR_ANY ? EADDRNOTAVAIL : 0;
+}
+
+/*
+ * Assigns 'addr' as 'netdev''s IPv4 address and 'mask' as its netmask. If
+ * 'addr' is INADDR_ANY, 'netdev''s IPv4 address is cleared. Returns a
+ * positive errno value.
+ */
+static int
+netdev_bsd_set_in4(struct netdev *netdev_, struct in_addr addr,
+ struct in_addr mask)
+{
+ struct netdev_dev_bsd *netdev_dev =
+ netdev_dev_bsd_cast(netdev_get_dev(netdev_));
+ int error;
+
+ error = do_set_addr(netdev_, SIOCSIFADDR, "SIOCSIFADDR", addr);
+ if (!error) {
+ netdev_dev->cache_valid |= VALID_IN4;
+ netdev_dev->in4 = addr;
+ if (addr.s_addr != INADDR_ANY) {
+ error = do_set_addr(netdev_, SIOCSIFNETMASK,
+ "SIOCSIFNETMASK", mask);
+ }
+ netdev_dev_bsd_changed(netdev_dev);
+ }
+ return error;
+}
+
+static int
+netdev_bsd_get_in6(const struct netdev *netdev_, struct in6_addr *in6)
+{
+ struct netdev_dev_bsd *netdev_dev =
+ netdev_dev_bsd_cast(netdev_get_dev(netdev_));
+ if (!(netdev_dev->cache_valid & VALID_IN6)) {
+ struct ifaddrs *ifa, *head;
+ struct sockaddr_in6 *sin6;
+ const char *netdev_name = netdev_get_name(netdev_);
+
+ if (getifaddrs(&head) != 0) {
+ VLOG_ERR("getifaddrs on %s device failed: %s", netdev_name,
+ strerror(errno));
+ return errno;
+ }
+
+ for (ifa = head; ifa; ifa = ifa->ifa_next) {
+ if (ifa->ifa_addr->sa_family == AF_INET6 &&
+ !strcmp(ifa->ifa_name, netdev_name)) {
+ sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
+ if (sin6) {
+ memcpy(&netdev_dev->in6, &sin6->sin6_addr, sin6->sin6_len);
+ netdev_dev->cache_valid |= VALID_IN6;
+ *in6 = netdev_dev->in6;
+ freeifaddrs(head);
+ return 0;
+ }
+ }
+ }
+ return EADDRNOTAVAIL;
+ }
+ *in6 = netdev_dev->in6;
+ return 0;
+}
+
+static void
+make_in4_sockaddr(struct sockaddr *sa, struct in_addr addr)
+{
+ struct sockaddr_in sin;
+ memset(&sin, 0, sizeof sin);
+ sin.sin_family = AF_INET;
+ sin.sin_addr = addr;
+ sin.sin_port = 0;
+
+ memset(sa, 0, sizeof *sa);
+ memcpy(sa, &sin, sizeof sin);
+}
+
+static int
+do_set_addr(struct netdev *netdev,
+ int ioctl_nr, const char *ioctl_name, struct in_addr addr)
+{
+ struct ifreq ifr;
+ make_in4_sockaddr(&ifr.ifr_addr, addr);
+ return netdev_bsd_do_ioctl(netdev, &ifr, ioctl_nr, ioctl_name);
+}
+
+static int
+nd_to_iff_flags(enum netdev_flags nd)
+{
+ int iff = 0;
+ if (nd & NETDEV_UP) {
+ iff |= IFF_UP;
+ }
+ if (nd & NETDEV_PROMISC) {
+ iff |= IFF_PROMISC;
+ iff |= IFF_PPROMISC;
+ }
+ return iff;
+}
+
+static int
+iff_to_nd_flags(int iff)
+{
+ enum netdev_flags nd = 0;
+ if (iff & IFF_UP) {
+ nd |= NETDEV_UP;
+ }
+ if (iff & IFF_PROMISC) {
+ nd |= NETDEV_PROMISC;
+ }
+ return nd;
+}
+
+static int
+netdev_bsd_update_flags(struct netdev *netdev, enum netdev_flags off,
+ enum netdev_flags on, enum netdev_flags *old_flagsp)
+{
+ int old_flags, new_flags;
+ int error;
+
+ error = get_flags(netdev, &old_flags);
+ if (!error) {
+ *old_flagsp = iff_to_nd_flags(old_flags);
+ new_flags = (old_flags & ~nd_to_iff_flags(off)) | nd_to_iff_flags(on);
+ if (new_flags != old_flags) {
+ error = set_flags(netdev, new_flags);
+ netdev_dev_bsd_changed(netdev_dev_bsd_cast(netdev_get_dev(netdev)));
+ }
+ }
+ return error;
+}
+
+static unsigned int
+netdev_bsd_change_seq(const struct netdev *netdev)
+{
+ return netdev_dev_bsd_cast(netdev_get_dev(netdev))->change_seq;
+}
+
+
+const struct netdev_class netdev_bsd_class = {
+ "system",
+
+ netdev_bsd_init,
+ netdev_bsd_run,
+ netdev_bsd_wait,
+ netdev_bsd_create_system,
+ netdev_bsd_destroy,
+ NULL, /* get_config */
+ NULL, /* set_config */
+ netdev_bsd_open_system,
+ netdev_bsd_close,
+
+ netdev_bsd_listen,
+
+ netdev_bsd_recv,
+ netdev_bsd_recv_wait,
+ netdev_bsd_drain,
+
+ netdev_bsd_send,
+ netdev_bsd_send_wait,
+
+ netdev_bsd_set_etheraddr,
+ netdev_bsd_get_etheraddr,
+ netdev_bsd_get_mtu,
+ NULL, /* set_mtu */
+ netdev_bsd_get_ifindex,
+ netdev_bsd_get_carrier,
+ NULL, /* get_carrier_resets */
+ NULL, /* set_miimon_interval */
+ netdev_bsd_get_stats,
+ NULL, /* set_stats */
+
+ netdev_bsd_get_features,
+ NULL, /* set_advertisement */
+ NULL, /* set_policing */
+ NULL, /* get_qos_type */
+ NULL, /* get_qos_capabilities */
+ NULL, /* get_qos */
+ NULL, /* set_qos */
+ NULL, /* get_queue */
+ NULL, /* set_queue */
+ NULL, /* delete_queue */
+ NULL, /* get_queue_stats */
+ NULL, /* dump_queue */
+ NULL, /* dump_queue_stats */
+
+ netdev_bsd_get_in4,
+ netdev_bsd_set_in4,
+ netdev_bsd_get_in6,
+ NULL, /* add_router */
+ NULL, /* get_next_hop */
+ NULL, /* get_drv_info */
+ NULL, /* arp_lookup */
+
+ netdev_bsd_update_flags,
+
+ netdev_bsd_change_seq
+};
+
+const struct netdev_class netdev_tap_class = {
+ "tap",
+
+ netdev_bsd_init,
+ netdev_bsd_run,
+ netdev_bsd_wait,
+ netdev_bsd_create_tap,
+ netdev_bsd_destroy,
+ NULL, /* get_config */
+ NULL, /* set_config */
+ netdev_bsd_open_system,
+ netdev_bsd_close,
+
+ netdev_bsd_listen,
+
+ netdev_bsd_recv,
+ netdev_bsd_recv_wait,
+ netdev_bsd_drain,
+
+ netdev_bsd_send,
+ netdev_bsd_send_wait,
+
+ netdev_bsd_set_etheraddr,
+ netdev_bsd_get_etheraddr,
+ netdev_bsd_get_mtu,
+ NULL, /* set_mtu */
+ netdev_bsd_get_ifindex,
+ netdev_bsd_get_carrier,
+ NULL, /* get_carrier_resets */
+ NULL, /* set_miimon_interval */
+ netdev_bsd_get_stats,
+ NULL, /* set_stats */
+
+ netdev_bsd_get_features,
+ NULL, /* set_advertisement */
+ NULL, /* set_policing */
+ NULL, /* get_qos_type */
+ NULL, /* get_qos_capabilities */
+ NULL, /* get_qos */
+ NULL, /* set_qos */
+ NULL, /* get_queue */
+ NULL, /* set_queue */
+ NULL, /* delete_queue */
+ NULL, /* get_queue_stats */
+ NULL, /* dump_queue */
+ NULL, /* dump_queue_stats */
+
+ netdev_bsd_get_in4,
+ netdev_bsd_set_in4,
+ netdev_bsd_get_in6,
+ NULL, /* add_router */
+ NULL, /* get_next_hop */
+ NULL, /* get_drv_info */
+ NULL, /* arp_lookup */
+
+ netdev_bsd_update_flags,
+
+ netdev_bsd_change_seq
+};
+\f
+
+static void
+destroy_tap(int fd, const char *name)
+{
+ struct ifreq ifr;
+
+ close(fd);
+ strcpy(ifr.ifr_name, name);
+ /* XXX What to do if this call fails? */
+ ioctl(af_inet_sock, SIOCIFDESTROY, &ifr);
+}
+
+static int
+get_flags(const struct netdev *netdev, int *flags)
+{
+ struct ifreq ifr;
+ int error;
+
+ error = netdev_bsd_do_ioctl(netdev, &ifr, SIOCGIFFLAGS, "SIOCGIFFLAGS");
+
+ *flags = 0xFFFF0000 & (ifr.ifr_flagshigh << 16);
+ *flags |= 0x0000FFFF & ifr.ifr_flags;
+
+ return error;
+}
+
+static int
+set_flags(struct netdev *netdev, int flags)
+{
+ struct ifreq ifr;
+
+ ifr.ifr_flags = 0x0000FFFF & flags;
+ ifr.ifr_flagshigh = (0xFFFF0000 & flags) >> 16;
+
+ return netdev_bsd_do_ioctl(netdev, &ifr, SIOCSIFFLAGS, "SIOCSIFFLAGS");
+}
+
+static int
+get_ifindex(const struct netdev *netdev_, int *ifindexp)
+{
+ struct netdev_dev_bsd *netdev_dev =
+ netdev_dev_bsd_cast(netdev_get_dev(netdev_));
+ *ifindexp = 0;
+ if (!(netdev_dev->cache_valid & VALID_IFINDEX)) {
+ int ifindex = if_nametoindex(netdev_get_name(netdev_));
+ if (ifindex <= 0) {
+ return errno;
+ }
+ netdev_dev->cache_valid |= VALID_IFINDEX;
+ netdev_dev->ifindex = ifindex;
+ }
+ *ifindexp = netdev_dev->ifindex;
+ return 0;
+}
+
+static int
+get_etheraddr(const char *netdev_name, uint8_t ea[ETH_ADDR_LEN])
+{
+ struct ifaddrs *head;
+ struct ifaddrs *ifa;
+ struct sockaddr_dl *sdl;
+
+ if (getifaddrs(&head) != 0) {
+ VLOG_ERR("getifaddrs on %s device failed: %s", netdev_name,
+ strerror(errno));
+ return errno;
+ }
+
+ for (ifa = head; ifa; ifa = ifa->ifa_next) {
+ if (ifa->ifa_addr->sa_family == AF_LINK) {
+ if (!strcmp(ifa->ifa_name, netdev_name)) {
+ sdl = (struct sockaddr_dl *)ifa->ifa_addr;
+ if (sdl) {
+ memcpy(ea, LLADDR(sdl), sdl->sdl_alen);
+ freeifaddrs(head);
+ return 0;
+ }
+ }
+ }
+ }
+
+ VLOG_ERR("could not find ethernet address for %s device", netdev_name);
+ freeifaddrs(head);
+ return ENODEV;
+}
+
+static int
+set_etheraddr(const char *netdev_name, int hwaddr_family,
+ int hwaddr_len, const uint8_t mac[ETH_ADDR_LEN])
+{
+ struct ifreq ifr;
+
+ memset(&ifr, 0, sizeof ifr);
+ strncpy(ifr.ifr_name, netdev_name, sizeof ifr.ifr_name);
+ ifr.ifr_addr.sa_family = hwaddr_family;
+ ifr.ifr_addr.sa_len = hwaddr_len;
+ memcpy(ifr.ifr_addr.sa_data, mac, hwaddr_len);
+ if (ioctl(af_inet_sock, SIOCSIFLLADDR, &ifr) < 0) {
+ VLOG_ERR("ioctl(SIOCSIFLLADDR) on %s device failed: %s",
+ netdev_name, strerror(errno));
+ return errno;
+ }
+ return 0;
+}
+
+static int
+netdev_bsd_do_ioctl(const struct netdev *netdev, struct ifreq *ifr,
+ unsigned long cmd, const char *cmd_name)
+{
+ strncpy(ifr->ifr_name, netdev_get_name(netdev), sizeof ifr->ifr_name);
+ if (ioctl(af_inet_sock, cmd, ifr) == -1) {
+ VLOG_DBG_RL(&rl, "%s: ioctl(%s) failed: %s",
+ netdev_get_name(netdev), cmd_name, strerror(errno));
+ return errno;
+ }
+ return 0;
+}
git://git.onelab.eu / sliver-openvswitch.git / commitdiff