496 	struct ip6_tnl *tunnel;  in ip6gre_rcv()  local
499 	tunnel = ip6gre_tunnel_lookup(skb->dev,  in ip6gre_rcv()
502 	if (tunnel) {  in ip6gre_rcv()
503 		if (tunnel->parms.collect_md) {  in ip6gre_rcv()
515 			ip6_tnl_rcv(tunnel, skb, tpi, tun_dst, log_ecn_error);  in ip6gre_rcv()
517 			ip6_tnl_rcv(tunnel, skb, tpi, NULL, log_ecn_error);  in ip6gre_rcv()
533 	struct ip6_tnl *tunnel;  in ip6erspan_rcv()  local
540 	tunnel = ip6gre_tunnel_lookup(skb->dev,  in ip6erspan_rcv()
543 	if (tunnel) {  in ip6erspan_rcv()
554 		if (tunnel->parms.collect_md) {  in ip6erspan_rcv()
588 			ip6_tnl_rcv(tunnel, skb, tpi, tun_dst, log_ecn_error);  in ip6erspan_rcv()
591 			ip6_tnl_rcv(tunnel, skb, tpi, NULL, log_ecn_error);  in ip6erspan_rcv()
725 	struct ip6_tnl *tunnel = netdev_priv(dev);  in __gre6_xmit()  local
735 		fl6->daddr = tunnel->parms.raddr;  in __gre6_xmit()
740 	if (tunnel->parms.collect_md) {  in __gre6_xmit()
763 		if (skb_cow_head(skb, dev->needed_headroom ?: tun_hlen + tunnel->encap_hlen))  in __gre6_xmit()
769 				 (flags & TUNNEL_SEQ) ? htonl(atomic_fetch_inc(&tunnel->o_seqno))  in __gre6_xmit()
773 		if (skb_cow_head(skb, dev->needed_headroom ?: tunnel->hlen))  in __gre6_xmit()
776 		flags = tunnel->parms.o_flags;  in __gre6_xmit()
778 		gre_build_header(skb, tunnel->tun_hlen, flags,  in __gre6_xmit()
779 				 protocol, tunnel->parms.o_key,  in __gre6_xmit()
780 				 (flags & TUNNEL_SEQ) ? htonl(atomic_fetch_inc(&tunnel->o_seqno))  in __gre6_xmit()
1175 static int ip6gre_calc_hlen(struct ip6_tnl *tunnel)  in ip6gre_calc_hlen()  argument
1179 	tunnel->tun_hlen = gre_calc_hlen(tunnel->parms.o_flags);  in ip6gre_calc_hlen()
1180 	tunnel->hlen = tunnel->tun_hlen + tunnel->encap_hlen;  in ip6gre_calc_hlen()
1182 	t_hlen = tunnel->hlen + sizeof(struct ipv6hdr);  in ip6gre_calc_hlen()
1184 	if (tunnel->dev->header_ops)  in ip6gre_calc_hlen()
1185 		tunnel->dev->hard_header_len = LL_MAX_HEADER + t_hlen;  in ip6gre_calc_hlen()
1187 		tunnel->dev->needed_headroom = LL_MAX_HEADER + t_hlen;  in ip6gre_calc_hlen()
1481 	struct ip6_tnl *tunnel;  in ip6gre_tunnel_init_common()  local
1485 	tunnel = netdev_priv(dev);  in ip6gre_tunnel_init_common()
1487 	tunnel->dev = dev;  in ip6gre_tunnel_init_common()
1488 	tunnel->net = dev_net(dev);  in ip6gre_tunnel_init_common()
1489 	strcpy(tunnel->parms.name, dev->name);  in ip6gre_tunnel_init_common()
1495 	ret = dst_cache_init(&tunnel->dst_cache, GFP_KERNEL);  in ip6gre_tunnel_init_common()
1499 	ret = gro_cells_init(&tunnel->gro_cells, dev);  in ip6gre_tunnel_init_common()
1503 	t_hlen = ip6gre_calc_hlen(tunnel);  in ip6gre_tunnel_init_common()
1507 	if (!(tunnel->parms.flags & IP6_TNL_F_IGN_ENCAP_LIMIT))  in ip6gre_tunnel_init_common()
1510 	if (tunnel->parms.collect_md) {  in ip6gre_tunnel_init_common()
1519 	dst_cache_destroy(&tunnel->dst_cache);  in ip6gre_tunnel_init_common()
1528 	struct ip6_tnl *tunnel;  in ip6gre_tunnel_init()  local
1535 	tunnel = netdev_priv(dev);  in ip6gre_tunnel_init()
1537 	if (tunnel->parms.collect_md)  in ip6gre_tunnel_init()
1540 	memcpy(dev->dev_addr, &tunnel->parms.laddr, sizeof(struct in6_addr));  in ip6gre_tunnel_init()
1541 	memcpy(dev->broadcast, &tunnel->parms.raddr, sizeof(struct in6_addr));  in ip6gre_tunnel_init()
1543 	if (ipv6_addr_any(&tunnel->parms.raddr))  in ip6gre_tunnel_init()
1551 	struct ip6_tnl *tunnel = netdev_priv(dev);  in ip6gre_fb_tunnel_init()  local
1553 	tunnel->dev = dev;  in ip6gre_fb_tunnel_init()
1554 	tunnel->net = dev_net(dev);  in ip6gre_fb_tunnel_init()
1555 	strcpy(tunnel->parms.name, dev->name);  in ip6gre_fb_tunnel_init()
1557 	tunnel->hlen		= sizeof(struct ipv6hdr) + 4;  in ip6gre_fb_tunnel_init()
1860 static int ip6erspan_calc_hlen(struct ip6_tnl *tunnel)  in ip6erspan_calc_hlen()  argument
1864 	tunnel->tun_hlen = 8;  in ip6erspan_calc_hlen()
1865 	tunnel->hlen = tunnel->tun_hlen + tunnel->encap_hlen +  in ip6erspan_calc_hlen()
1866 		       erspan_hdr_len(tunnel->parms.erspan_ver);  in ip6erspan_calc_hlen()
1868 	t_hlen = tunnel->hlen + sizeof(struct ipv6hdr);  in ip6erspan_calc_hlen()
1869 	tunnel->dev->needed_headroom = LL_MAX_HEADER + t_hlen;  in ip6erspan_calc_hlen()
1875 	struct ip6_tnl *tunnel;  in ip6erspan_tap_init()  local
1879 	tunnel = netdev_priv(dev);  in ip6erspan_tap_init()
1881 	tunnel->dev = dev;  in ip6erspan_tap_init()
1882 	tunnel->net = dev_net(dev);  in ip6erspan_tap_init()
1883 	strcpy(tunnel->parms.name, dev->name);  in ip6erspan_tap_init()
1889 	ret = dst_cache_init(&tunnel->dst_cache, GFP_KERNEL);  in ip6erspan_tap_init()
1893 	ret = gro_cells_init(&tunnel->gro_cells, dev);  in ip6erspan_tap_init()
1897 	t_hlen = ip6erspan_calc_hlen(tunnel);  in ip6erspan_tap_init()
1901 	if (!(tunnel->parms.flags & IP6_TNL_F_IGN_ENCAP_LIMIT))  in ip6erspan_tap_init()
1905 	ip6erspan_tnl_link_config(tunnel, 1);  in ip6erspan_tap_init()
1911 	dst_cache_destroy(&tunnel->dst_cache);  in ip6erspan_tap_init()