static int af_packet_update_properties ( struct net_device *netdev )
{
struct af_packet_nic *nic = netdev->priv;
struct ifreq if_data;
int ret;
/* retrieve default MAC address */
int fd = linux_socket(LINUX_AF_PACKET, LINUX_SOCK_RAW, 0);
if (fd < 0) {
DBGC(nic, "af_packet %p cannot create raw socket (%s)\n",
nic, linux_strerror(linux_errno));
return fd;
}
/* retrieve host's MAC address */
memset(&if_data, 0, sizeof(if_data));
strncpy(if_data.ifr_name, nic->ifname, sizeof(if_data.ifr_name));
ret = linux_ioctl(fd, LINUX_SIOCGIFHWADDR, &if_data);
if (ret < 0) {
DBGC(nic, "af_packet %p cannot get mac addr (%s)\n",
nic, linux_strerror(linux_errno));
linux_close(fd);
return ret;
}
linux_close(fd);
/* struct sockaddr = { u16 family, u8 pad[14] (equiv. sa_data) }; */
memcpy(netdev->ll_addr, if_data.ifr_hwaddr.pad, ETH_ALEN);
return 0;
}
/** Open the linux interface */
static int af_packet_nic_open ( struct net_device * netdev )
{
struct af_packet_nic * nic = netdev->priv;
struct sockaddr_ll socket_address;
struct ifreq if_data;
int ret;
nic->fd = linux_socket(LINUX_AF_PACKET, LINUX_SOCK_RAW,
htons(ETH_P_ALL));
if (nic->fd < 0) {
DBGC(nic, "af_packet %p socket(AF_PACKET) = %d (%s)\n",
nic, nic->fd, linux_strerror(linux_errno));
return nic->fd;
}
/* resolve ifindex of ifname */
memset(&if_data, 0, sizeof(if_data));
strncpy(if_data.ifr_name, nic->ifname, sizeof(if_data.ifr_name));
ret = linux_ioctl(nic->fd, LINUX_SIOCGIFINDEX, &if_data);
if (ret < 0) {
DBGC(nic, "af_packet %p ioctl(SIOCGIFINDEX) = %d (%s)\n",
nic, ret, linux_strerror(linux_errno));
linux_close(nic->fd);
return ret;
}
nic->ifindex = if_data.ifr_ifindex;
/* bind to interface */
memset(&socket_address, 0, sizeof(socket_address));
socket_address.sll_family = LINUX_AF_PACKET;
socket_address.sll_ifindex = nic->ifindex;
socket_address.sll_protocol = htons(ETH_P_ALL);
ret = linux_bind(nic->fd, (void *) &socket_address,
sizeof(socket_address));
if (ret == -1) {
DBGC(nic, "af_packet %p bind() = %d (%s)\n",
nic, ret, linux_strerror(linux_errno));
linux_close(nic->fd);
return ret;
}
/* Set nonblocking mode to make af_packet_nic_poll() easier */
ret = linux_fcntl(nic->fd, F_SETFL, O_NONBLOCK);
if (ret != 0) {
DBGC(nic, "af_packet %p fcntl(%d, ...) = %d (%s)\n",
nic, nic->fd, ret, linux_strerror(linux_errno));
linux_close(nic->fd);
return ret;
}
return 0;
}
int
linux_socketcall(struct proc *p, struct linux_socketcall_args *args,int *retval)
{
switch (args->what) {
case LINUX_SOCKET:
return linux_socket(p, args->args, retval);
case LINUX_BIND:
return linux_bind(p, args->args, retval);
case LINUX_CONNECT:
return linux_connect(p, args->args, retval);
case LINUX_LISTEN:
return linux_listen(p, args->args, retval);
case LINUX_ACCEPT:
return linux_accept(p, args->args, retval);
case LINUX_GETSOCKNAME:
return linux_getsockname(p, args->args, retval);
case LINUX_GETPEERNAME:
return linux_getpeername(p, args->args, retval);
case LINUX_SOCKETPAIR:
return linux_socketpair(p, args->args, retval);
case LINUX_SEND:
return linux_send(p, args->args, retval);
case LINUX_RECV:
return linux_recv(p, args->args, retval);
case LINUX_SENDTO:
return linux_sendto(p, args->args, retval);
case LINUX_RECVFROM:
return linux_recvfrom(p, args->args, retval);
case LINUX_SHUTDOWN:
return linux_shutdown(p, args->args, retval);
case LINUX_SETSOCKOPT:
return linux_setsockopt(p, args->args, retval);
case LINUX_GETSOCKOPT:
return linux_getsockopt(p, args->args, retval);
default:
uprintf("LINUX: 'socket' typ=%d not implemented\n", args->what);
return ENOSYS;
}
}
