491 	struct ip6_tnl *tunnel;  in ip6gre_rcv()  local
494 	tunnel = ip6gre_tunnel_lookup(skb->dev,  in ip6gre_rcv()
497 	if (tunnel) {  in ip6gre_rcv()
498 		if (tunnel->parms.collect_md) {  in ip6gre_rcv()
510 			ip6_tnl_rcv(tunnel, skb, tpi, tun_dst, log_ecn_error);  in ip6gre_rcv()
512 			ip6_tnl_rcv(tunnel, skb, tpi, NULL, log_ecn_error);  in ip6gre_rcv()
528 	struct ip6_tnl *tunnel;  in ip6erspan_rcv()  local
538 	tunnel = ip6gre_tunnel_lookup(skb->dev,  in ip6erspan_rcv()
541 	if (tunnel) {  in ip6erspan_rcv()
552 		if (tunnel->parms.collect_md) {  in ip6erspan_rcv()
586 			ip6_tnl_rcv(tunnel, skb, tpi, tun_dst, log_ecn_error);  in ip6erspan_rcv()
589 			ip6_tnl_rcv(tunnel, skb, tpi, NULL, log_ecn_error);  in ip6erspan_rcv()
750 	struct ip6_tnl *tunnel = netdev_priv(dev);  in __gre6_xmit()  local
760 		fl6->daddr = tunnel->parms.raddr;  in __gre6_xmit()
765 	if (tunnel->parms.collect_md) {  in __gre6_xmit()
788 		if (skb_cow_head(skb, dev->needed_headroom ?: tun_hlen + tunnel->encap_hlen))  in __gre6_xmit()
794 				 (flags & TUNNEL_SEQ) ? htonl(atomic_fetch_inc(&tunnel->o_seqno))  in __gre6_xmit()
798 		if (skb_cow_head(skb, dev->needed_headroom ?: tunnel->hlen))  in __gre6_xmit()
801 		flags = tunnel->parms.o_flags;  in __gre6_xmit()
803 		gre_build_header(skb, tunnel->tun_hlen, flags,  in __gre6_xmit()
804 				 protocol, tunnel->parms.o_key,  in __gre6_xmit()
805 				 (flags & TUNNEL_SEQ) ? htonl(atomic_fetch_inc(&tunnel->o_seqno))  in __gre6_xmit()
1178 static int ip6gre_calc_hlen(struct ip6_tnl *tunnel)  in ip6gre_calc_hlen()  argument
1182 	tunnel->tun_hlen = gre_calc_hlen(tunnel->parms.o_flags);  in ip6gre_calc_hlen()
1183 	tunnel->hlen = tunnel->tun_hlen + tunnel->encap_hlen;  in ip6gre_calc_hlen()
1185 	t_hlen = tunnel->hlen + sizeof(struct ipv6hdr);  in ip6gre_calc_hlen()
1187 	if (tunnel->dev->header_ops)  in ip6gre_calc_hlen()
1188 		tunnel->dev->hard_header_len = LL_MAX_HEADER + t_hlen;  in ip6gre_calc_hlen()
1190 		tunnel->dev->needed_headroom = LL_MAX_HEADER + t_hlen;  in ip6gre_calc_hlen()
1482 	struct ip6_tnl *tunnel;  in ip6gre_tunnel_init_common()  local
1486 	tunnel = netdev_priv(dev);  in ip6gre_tunnel_init_common()
1488 	tunnel->dev = dev;  in ip6gre_tunnel_init_common()
1489 	tunnel->net = dev_net(dev);  in ip6gre_tunnel_init_common()
1490 	strcpy(tunnel->parms.name, dev->name);  in ip6gre_tunnel_init_common()
1496 	ret = dst_cache_init(&tunnel->dst_cache, GFP_KERNEL);  in ip6gre_tunnel_init_common()
1500 	ret = gro_cells_init(&tunnel->gro_cells, dev);  in ip6gre_tunnel_init_common()
1504 	t_hlen = ip6gre_calc_hlen(tunnel);  in ip6gre_tunnel_init_common()
1508 	if (!(tunnel->parms.flags & IP6_TNL_F_IGN_ENCAP_LIMIT))  in ip6gre_tunnel_init_common()
1511 	if (tunnel->parms.collect_md) {  in ip6gre_tunnel_init_common()
1516 	netdev_hold(dev, &tunnel->dev_tracker, GFP_KERNEL);  in ip6gre_tunnel_init_common()
1521 	dst_cache_destroy(&tunnel->dst_cache);  in ip6gre_tunnel_init_common()
1530 	struct ip6_tnl *tunnel;  in ip6gre_tunnel_init()  local
1537 	tunnel = netdev_priv(dev);  in ip6gre_tunnel_init()
1539 	if (tunnel->parms.collect_md)  in ip6gre_tunnel_init()
1542 	__dev_addr_set(dev, &tunnel->parms.laddr, sizeof(struct in6_addr));  in ip6gre_tunnel_init()
1543 	memcpy(dev->broadcast, &tunnel->parms.raddr, sizeof(struct in6_addr));  in ip6gre_tunnel_init()
1545 	if (ipv6_addr_any(&tunnel->parms.raddr))  in ip6gre_tunnel_init()
1553 	struct ip6_tnl *tunnel = netdev_priv(dev);  in ip6gre_fb_tunnel_init()  local
1555 	tunnel->dev = dev;  in ip6gre_fb_tunnel_init()
1556 	tunnel->net = dev_net(dev);  in ip6gre_fb_tunnel_init()
1557 	strcpy(tunnel->parms.name, dev->name);  in ip6gre_fb_tunnel_init()
1559 	tunnel->hlen		= sizeof(struct ipv6hdr) + 4;  in ip6gre_fb_tunnel_init()
1862 static int ip6erspan_calc_hlen(struct ip6_tnl *tunnel)  in ip6erspan_calc_hlen()  argument
1866 	tunnel->tun_hlen = 8;  in ip6erspan_calc_hlen()
1867 	tunnel->hlen = tunnel->tun_hlen + tunnel->encap_hlen +  in ip6erspan_calc_hlen()
1868 		       erspan_hdr_len(tunnel->parms.erspan_ver);  in ip6erspan_calc_hlen()
1870 	t_hlen = tunnel->hlen + sizeof(struct ipv6hdr);  in ip6erspan_calc_hlen()
1871 	tunnel->dev->needed_headroom = LL_MAX_HEADER + t_hlen;  in ip6erspan_calc_hlen()
1877 	struct ip6_tnl *tunnel;  in ip6erspan_tap_init()  local
1881 	tunnel = netdev_priv(dev);  in ip6erspan_tap_init()
1883 	tunnel->dev = dev;  in ip6erspan_tap_init()
1884 	tunnel->net = dev_net(dev);  in ip6erspan_tap_init()
1885 	strcpy(tunnel->parms.name, dev->name);  in ip6erspan_tap_init()
1891 	ret = dst_cache_init(&tunnel->dst_cache, GFP_KERNEL);  in ip6erspan_tap_init()
1895 	ret = gro_cells_init(&tunnel->gro_cells, dev);  in ip6erspan_tap_init()
1899 	t_hlen = ip6erspan_calc_hlen(tunnel);  in ip6erspan_tap_init()
1903 	if (!(tunnel->parms.flags & IP6_TNL_F_IGN_ENCAP_LIMIT))  in ip6erspan_tap_init()
1907 	ip6erspan_tnl_link_config(tunnel, 1);  in ip6erspan_tap_init()
1909 	netdev_hold(dev, &tunnel->dev_tracker, GFP_KERNEL);  in ip6erspan_tap_init()
1914 	dst_cache_destroy(&tunnel->dst_cache);  in ip6erspan_tap_init()