int tipc_enable_l2_media(struct net *net, struct tipc_bearer *b,
struct nlattr *attr[])
{
struct net_device *dev;
char *driver_name = strchr((const char *)b->name, ':') + 1;
/* Find device with specified name */
dev = dev_get_by_name(net, driver_name);
if (!dev)
return -ENODEV;
if (tipc_mtu_bad(dev, 0)) {
dev_put(dev);
return -EINVAL;
}
/* Associate TIPC bearer with L2 bearer */
rcu_assign_pointer(b->media_ptr, dev);
memset(&b->bcast_addr, 0, sizeof(b->bcast_addr));
memcpy(b->bcast_addr.value, dev->broadcast, b->media->hwaddr_len);
b->bcast_addr.media_id = b->media->type_id;
b->bcast_addr.broadcast = TIPC_BROADCAST_SUPPORT;
b->mtu = dev->mtu;
b->media->raw2addr(b, &b->addr, (char *)dev->dev_addr);
rcu_assign_pointer(dev->tipc_ptr, b);
return 0;
}
int tipc_enable_l2_media(struct net *net, struct tipc_bearer *b,
struct nlattr *attr[])
{
char *dev_name = strchr((const char *)b->name, ':') + 1;
int hwaddr_len = b->media->hwaddr_len;
u8 node_id[NODE_ID_LEN] = {0,};
struct net_device *dev;
/* Find device with specified name */
dev = dev_get_by_name(net, dev_name);
if (!dev)
return -ENODEV;
if (tipc_mtu_bad(dev, 0)) {
dev_put(dev);
return -EINVAL;
}
/* Autoconfigure own node identity if needed */
if (!tipc_own_id(net) && hwaddr_len <= NODE_ID_LEN) {
memcpy(node_id, dev->dev_addr, hwaddr_len);
tipc_net_init(net, node_id, 0);
}
if (!tipc_own_id(net)) {
pr_warn("Failed to obtain node identity\n");
return -EINVAL;
}
/* Associate TIPC bearer with L2 bearer */
rcu_assign_pointer(b->media_ptr, dev);
b->pt.dev = dev;
b->pt.type = htons(ETH_P_TIPC);
b->pt.func = tipc_l2_rcv_msg;
dev_add_pack(&b->pt);
memset(&b->bcast_addr, 0, sizeof(b->bcast_addr));
memcpy(b->bcast_addr.value, dev->broadcast, hwaddr_len);
b->bcast_addr.media_id = b->media->type_id;
b->bcast_addr.broadcast = TIPC_BROADCAST_SUPPORT;
b->mtu = dev->mtu;
b->media->raw2addr(b, &b->addr, (char *)dev->dev_addr);
rcu_assign_pointer(dev->tipc_ptr, b);
return 0;
}
