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()
587 			ip6_tnl_rcv(tunnel, skb, tpi, tun_dst, log_ecn_error);  in ip6erspan_rcv()
590 			ip6_tnl_rcv(tunnel, skb, tpi, NULL, log_ecn_error);  in ip6erspan_rcv()
751 	struct ip6_tnl *tunnel = netdev_priv(dev);  in __gre6_xmit()  local
761 		fl6->daddr = tunnel->parms.raddr;  in __gre6_xmit()
766 	if (tunnel->parms.collect_md) {  in __gre6_xmit()
792 		if (skb_cow_head(skb, dev->needed_headroom ?: tun_hlen + tunnel->encap_hlen))  in __gre6_xmit()
799 				 htonl(atomic_fetch_inc(&tunnel->o_seqno)) :  in __gre6_xmit()
803 		if (skb_cow_head(skb, dev->needed_headroom ?: tunnel->hlen))  in __gre6_xmit()
806 		ip_tunnel_flags_copy(flags, tunnel->parms.o_flags);  in __gre6_xmit()
808 		gre_build_header(skb, tunnel->tun_hlen, flags,  in __gre6_xmit()
809 				 protocol, tunnel->parms.o_key,  in __gre6_xmit()
811 				 htonl(atomic_fetch_inc(&tunnel->o_seqno)) :  in __gre6_xmit()
1191 static int ip6gre_calc_hlen(struct ip6_tnl *tunnel)  in ip6gre_calc_hlen()  argument
1195 	tunnel->tun_hlen = gre_calc_hlen(tunnel->parms.o_flags);  in ip6gre_calc_hlen()
1196 	tunnel->hlen = tunnel->tun_hlen + tunnel->encap_hlen;  in ip6gre_calc_hlen()
1198 	t_hlen = tunnel->hlen + sizeof(struct ipv6hdr);  in ip6gre_calc_hlen()
1200 	if (tunnel->dev->header_ops)  in ip6gre_calc_hlen()
1201 		tunnel->dev->hard_header_len = LL_MAX_HEADER + t_hlen;  in ip6gre_calc_hlen()
1203 		tunnel->dev->needed_headroom = LL_MAX_HEADER + t_hlen;  in ip6gre_calc_hlen()
1494 	struct ip6_tnl *tunnel;  in ip6gre_tunnel_init_common()  local
1498 	tunnel = netdev_priv(dev);  in ip6gre_tunnel_init_common()
1500 	tunnel->dev = dev;  in ip6gre_tunnel_init_common()
1501 	tunnel->net = dev_net(dev);  in ip6gre_tunnel_init_common()
1502 	strcpy(tunnel->parms.name, dev->name);  in ip6gre_tunnel_init_common()
1504 	ret = dst_cache_init(&tunnel->dst_cache, GFP_KERNEL);  in ip6gre_tunnel_init_common()
1508 	ret = gro_cells_init(&tunnel->gro_cells, dev);  in ip6gre_tunnel_init_common()
1512 	t_hlen = ip6gre_calc_hlen(tunnel);  in ip6gre_tunnel_init_common()
1516 	if (!(tunnel->parms.flags & IP6_TNL_F_IGN_ENCAP_LIMIT))  in ip6gre_tunnel_init_common()
1519 	if (tunnel->parms.collect_md) {  in ip6gre_tunnel_init_common()
1524 	netdev_hold(dev, &tunnel->dev_tracker, GFP_KERNEL);  in ip6gre_tunnel_init_common()
1529 	dst_cache_destroy(&tunnel->dst_cache);  in ip6gre_tunnel_init_common()
1535 	struct ip6_tnl *tunnel;  in ip6gre_tunnel_init()  local
1542 	tunnel = netdev_priv(dev);  in ip6gre_tunnel_init()
1544 	if (tunnel->parms.collect_md)  in ip6gre_tunnel_init()
1547 	__dev_addr_set(dev, &tunnel->parms.laddr, sizeof(struct in6_addr));  in ip6gre_tunnel_init()
1548 	memcpy(dev->broadcast, &tunnel->parms.raddr, sizeof(struct in6_addr));  in ip6gre_tunnel_init()
1550 	if (ipv6_addr_any(&tunnel->parms.raddr))  in ip6gre_tunnel_init()
1558 	struct ip6_tnl *tunnel = netdev_priv(dev);  in ip6gre_fb_tunnel_init()  local
1560 	tunnel->dev = dev;  in ip6gre_fb_tunnel_init()
1561 	tunnel->net = dev_net(dev);  in ip6gre_fb_tunnel_init()
1562 	strcpy(tunnel->parms.name, dev->name);  in ip6gre_fb_tunnel_init()
1564 	tunnel->hlen		= sizeof(struct ipv6hdr) + 4;  in ip6gre_fb_tunnel_init()
1863 static int ip6erspan_calc_hlen(struct ip6_tnl *tunnel)  in ip6erspan_calc_hlen()  argument
1867 	tunnel->tun_hlen = 8;  in ip6erspan_calc_hlen()
1868 	tunnel->hlen = tunnel->tun_hlen + tunnel->encap_hlen +  in ip6erspan_calc_hlen()
1869 		       erspan_hdr_len(tunnel->parms.erspan_ver);  in ip6erspan_calc_hlen()
1871 	t_hlen = tunnel->hlen + sizeof(struct ipv6hdr);  in ip6erspan_calc_hlen()
1872 	tunnel->dev->needed_headroom = LL_MAX_HEADER + t_hlen;  in ip6erspan_calc_hlen()
1878 	struct ip6_tnl *tunnel;  in ip6erspan_tap_init()  local
1882 	tunnel = netdev_priv(dev);  in ip6erspan_tap_init()
1884 	tunnel->dev = dev;  in ip6erspan_tap_init()
1885 	tunnel->net = dev_net(dev);  in ip6erspan_tap_init()
1886 	strcpy(tunnel->parms.name, dev->name);  in ip6erspan_tap_init()
1888 	ret = dst_cache_init(&tunnel->dst_cache, GFP_KERNEL);  in ip6erspan_tap_init()
1892 	ret = gro_cells_init(&tunnel->gro_cells, dev);  in ip6erspan_tap_init()
1896 	t_hlen = ip6erspan_calc_hlen(tunnel);  in ip6erspan_tap_init()
1900 	if (!(tunnel->parms.flags & IP6_TNL_F_IGN_ENCAP_LIMIT))  in ip6erspan_tap_init()
1904 	ip6erspan_tnl_link_config(tunnel, 1);  in ip6erspan_tap_init()
1906 	netdev_hold(dev, &tunnel->dev_tracker, GFP_KERNEL);  in ip6erspan_tap_init()
1911 	dst_cache_destroy(&tunnel->dst_cache);  in ip6erspan_tap_init()