static int ipip6_tunnel_init(struct net_device *dev)
{
struct net_device *tdev = NULL;
struct ip_tunnel *tunnel;
struct iphdr *iph;
tunnel = (struct ip_tunnel*)dev->priv;
iph = &tunnel->parms.iph;
ipip6_tunnel_init_gen(dev);
if (iph->daddr) {
struct rtable *rt;
if (!ip_route_output(&rt, iph->daddr, iph->saddr, RT_TOS(iph->tos), tunnel->parms.link)) {
tdev = rt->u.dst.dev;
ip_rt_put(rt);
}
dev->flags |= IFF_POINTOPOINT;
}
if (!tdev && tunnel->parms.link)
tdev = __dev_get_by_index(tunnel->parms.link);
if (tdev) {
dev->hard_header_len = tdev->hard_header_len + sizeof(struct iphdr);
dev->mtu = tdev->mtu - sizeof(struct iphdr);
if (dev->mtu < IPV6_MIN_MTU)
dev->mtu = IPV6_MIN_MTU;
}
dev->iflink = tunnel->parms.link;
return 0;
}
int __init ipip6_fb_tunnel_init(struct net_device *dev)
{
struct iphdr *iph;
ipip6_tunnel_init_gen(dev);
#ifdef MODULE
dev->open = ipip6_fb_tunnel_open;
dev->stop = ipip6_fb_tunnel_close;
#endif
iph = &ipip6_fb_tunnel.parms.iph;
iph->version = 4;
iph->protocol = IPPROTO_IPV6;
iph->ihl = 5;
iph->ttl = 64;
dev_hold(dev);
tunnels_wc[0] = &ipip6_fb_tunnel;
return 0;
}
