static void
discovery_local_port_cb(const struct ofp_port *port, void *d_)
{
struct discovery *d = d_;
if (port) {
char name[OFP_MAX_PORT_NAME_LEN + 1];
struct netdev *netdev;
int retval;
/* Check that this was really a change. */
get_port_name(port, name, sizeof name);
if (d->dhcp && !strcmp(netdev_get_name(dhclient_get_netdev(d->dhcp)),
name)) {
return;
}
/* Destroy current DHCP client. */
dhclient_destroy(d->dhcp);
d->dhcp = NULL;
/* Bring local network device up. */
retval = netdev_open(name, NETDEV_ETH_TYPE_NONE, &netdev);
if (retval) {
VLOG_ERR(LOG_MODULE, "Could not open %s device, discovery disabled: %s",
name, strerror(retval));
return;
}
retval = netdev_turn_flags_on(netdev, NETDEV_UP, true);
if (retval) {
VLOG_ERR(LOG_MODULE, "Could not bring %s device up, discovery disabled: %s",
name, strerror(retval));
return;
}
netdev_close(netdev);
/* Initialize DHCP client. */
retval = dhclient_create(name, modify_dhcp_request,
validate_dhcp_offer, (void *) d->s, &d->dhcp);
if (retval) {
VLOG_ERR(LOG_MODULE, "Failed to initialize DHCP client, "
"discovery disabled: %s", strerror(retval));
return;
}
dhclient_set_max_timeout(d->dhcp, 3);
dhclient_init(d->dhcp, 0);
} else {
dhclient_destroy(d->dhcp);
d->dhcp = NULL;
}
}
static int
netdev_windows_system_construct(struct netdev *netdev_)
{
struct netdev_windows *netdev = netdev_windows_cast(netdev_);
struct netdev_windows_netdev_info info;
struct ofpbuf *buf;
int ret;
/* Query the attributes and runtime status of the netdev. */
ret = query_netdev(netdev_get_name(&netdev->up), &info, &buf);
/* "Internal" netdevs do not exist in the kernel yet. They need to be
* transformed into a netdev object and passed to dpif_port_add(), which
* will add them to the kernel. */
if (strcmp(netdev_get_type(&netdev->up), "internal") && ret) {
return ret;
}
ofpbuf_delete(buf);
netdev->change_seq = 1;
netdev->dev_type = info.ovs_type;
netdev->port_no = info.port_no;
netdev->mac = info.mac_address;
netdev->cache_valid = VALID_ETHERADDR;
netdev->ifindex = -EOPNOTSUPP;
netdev->mtu = info.mtu;
netdev->cache_valid |= VALID_MTU;
netdev->ifi_flags = dp_to_netdev_ifi_flags(info.ifi_flags);
netdev->cache_valid |= VALID_IFFLAG;
VLOG_DBG("construct device %s, ovs_type: %u.",
netdev_get_name(&netdev->up), info.ovs_type);
return 0;
}
static int dev_ifname(struct net *net, struct ifreq *ifr)
{
ifr->ifr_name[IFNAMSIZ-1] = 0;
return netdev_get_name(net, ifr->ifr_name, ifr->ifr_ifindex);
}
