83 	/* the IPv6 tunnel fallback device */
131  * ip6_tnl_lookup - fetch tunnel matching the end-point addresses
134  *   @remote: the address of the tunnel exit-point
135  *   @local: the address of the tunnel entry-point
138  *   tunnel matching given end-points if found,
139  *   else fallback tunnel if its device is up,
206  * ip6_tnl_bucket - get head of list matching given tunnel parameters
207  *   @p: parameters containing tunnel end-points
213  * Return: head of IPv6 tunnel list
232  * ip6_tnl_link - add tunnel to hash table
233  *   @t: tunnel to be added
248  * ip6_tnl_unlink - remove tunnel from hash table
249  *   @t: tunnel to be removed
304  * ip6_tnl_create - create a new tunnel
306  *   @p: tunnel parameters
309  *   Create tunnel matching given parameters.
312  *   created tunnel or error pointer
353  * ip6_tnl_locate - find or create tunnel matching given parameters
355  *   @p: tunnel parameters
356  *   @create: != 0 if allowed to create new tunnel if no match found
359  *   ip6_tnl_locate() first tries to locate an existing tunnel
361  *   tunnel device is created and registered for use.
364  *   matching tunnel or error pointer
394  * ip6_tnl_dev_uninit - tunnel device uninitializer
398  *   ip6_tnl_dev_uninit() removes tunnel from its list
488  * ip6_tnl_err - tunnel error handler
491  *   ip6_tnl_err() should handle errors in the tunnel according
533 			net_dbg_ratelimited("%s: Too small hop limit or routing loop in tunnel!\n",  in ip6_tnl_err()
549 				net_dbg_ratelimited("%s: Too small encapsulation limit or routing loop in tunnel!\n",  in ip6_tnl_err()
824 static int __ip6_tnl_rcv(struct ip6_tnl *tunnel, struct sk_buff *skb,  in __ip6_tnl_rcv()  argument
837 	     (tunnel->parms.i_flags & TUNNEL_CSUM)) ||  in __ip6_tnl_rcv()
839 	     !(tunnel->parms.i_flags & TUNNEL_CSUM))) {  in __ip6_tnl_rcv()
840 		tunnel->dev->stats.rx_crc_errors++;  in __ip6_tnl_rcv()
841 		tunnel->dev->stats.rx_errors++;  in __ip6_tnl_rcv()
845 	if (tunnel->parms.i_flags & TUNNEL_SEQ) {  in __ip6_tnl_rcv()
847 		    (tunnel->i_seqno &&  in __ip6_tnl_rcv()
848 		     (s32)(ntohl(tpi->seq) - tunnel->i_seqno) < 0)) {  in __ip6_tnl_rcv()
849 			tunnel->dev->stats.rx_fifo_errors++;  in __ip6_tnl_rcv()
850 			tunnel->dev->stats.rx_errors++;  in __ip6_tnl_rcv()
853 		tunnel->i_seqno = ntohl(tpi->seq) + 1;  in __ip6_tnl_rcv()
859 	if (tunnel->dev->type == ARPHRD_ETHER) {  in __ip6_tnl_rcv()
861 			tunnel->dev->stats.rx_length_errors++;  in __ip6_tnl_rcv()
862 			tunnel->dev->stats.rx_errors++;  in __ip6_tnl_rcv()
867 		skb->protocol = eth_type_trans(skb, tunnel->dev);  in __ip6_tnl_rcv()
870 		skb->dev = tunnel->dev;  in __ip6_tnl_rcv()
876 	__skb_tunnel_rx(skb, tunnel->dev, tunnel->net);  in __ip6_tnl_rcv()
878 	err = dscp_ecn_decapsulate(tunnel, ipv6h, skb);  in __ip6_tnl_rcv()
885 			++tunnel->dev->stats.rx_frame_errors;  in __ip6_tnl_rcv()
886 			++tunnel->dev->stats.rx_errors;  in __ip6_tnl_rcv()
891 	tstats = this_cpu_ptr(tunnel->dev->tstats);  in __ip6_tnl_rcv()
897 	skb_scrub_packet(skb, !net_eq(tunnel->net, dev_net(tunnel->dev)));  in __ip6_tnl_rcv()
902 	gro_cells_receive(&tunnel->gro_cells, skb);  in __ip6_tnl_rcv()
931 	/* no tunnel info required for ipxip6. */
936 	/* no tunnel info required for ipxip6. */
941 	/* no tunnel info required for mplsip6. */
1028  * ip6_tnl_addr_conflict - compare packet addresses to tunnel's own
1029  *   @t: the outgoing tunnel device
1033  *   Avoid trivial tunneling loop by checking that tunnel exit-point
1088  *   @dev: the outgoing tunnel device
1131 	/* NBMA tunnel */  in ip6_tnl_xmit()
1538  * ip6_tnl_change - update the tunnel parameters
1539  *   @t: tunnel to be changed
1540  *   @p: tunnel configuration parameters
1543  *   ip6_tnl_change() updates the tunnel parameters
1615  *   @dev: virtual device associated with tunnel
1624  *     %SIOCGETTUNNEL: get tunnel parameters for device
1625  *     %SIOCADDTUNNEL: add tunnel matching given tunnel parameters
1626  *     %SIOCCHGTUNNEL: change tunnel parameters to those given
1627  *     %SIOCDELTUNNEL: delete tunnel
1630  *   initialization, can be used for creating other tunnel devices.
1636  *   %-EINVAL if passed tunnel parameters are invalid,
1637  *   %-EEXIST if changing a tunnel's parameters would cause a conflict
1738  * ip6_tnl_change_mtu - change mtu manually for tunnel device
1739  *   @dev: virtual device associated with tunnel
1848  * ip6_tnl_dev_setup - setup virtual tunnel device
1849  *   @dev: virtual device associated with tunnel
1878  * ip6_tnl_dev_init_gen - general initializer for all tunnel devices
1879  *   @dev: virtual device associated with tunnel
1928  * ip6_tnl_dev_init - initializer for all non fallback tunnel devices
1929  *   @dev: virtual device associated with tunnel
1946  * ip6_fb_tnl_dev_init - initializer for fallback tunnel device
2167 	struct ip6_tnl *tunnel = netdev_priv(dev);  in ip6_tnl_fill_info()  local
2168 	struct __ip6_tnl_parm *parm = &tunnel->parms;  in ip6_tnl_fill_info()
2181 	if (nla_put_u16(skb, IFLA_IPTUN_ENCAP_TYPE, tunnel->encap.type) ||  in ip6_tnl_fill_info()
2182 	    nla_put_be16(skb, IFLA_IPTUN_ENCAP_SPORT, tunnel->encap.sport) ||  in ip6_tnl_fill_info()
2183 	    nla_put_be16(skb, IFLA_IPTUN_ENCAP_DPORT, tunnel->encap.dport) ||  in ip6_tnl_fill_info()
2184 	    nla_put_u16(skb, IFLA_IPTUN_ENCAP_FLAGS, tunnel->encap.flags))  in ip6_tnl_fill_info()
2199 	struct ip6_tnl *tunnel = netdev_priv(dev);  in ip6_tnl_get_link_net()  local
2201 	return tunnel->net;  in ip6_tnl_get_link_net()