83 	/* the IPv6 tunnel fallback device */
101  * ip6_tnl_lookup - fetch tunnel matching the end-point addresses
104  *   @remote: the address of the tunnel exit-point
105  *   @local: the address of the tunnel entry-point
108  *   tunnel matching given end-points if found,
109  *   else fallback tunnel if its device is up,
176  * ip6_tnl_bucket - get head of list matching given tunnel parameters
178  *   @p: parameters containing tunnel end-points
184  * Return: head of IPv6 tunnel list
203  * ip6_tnl_link - add tunnel to hash table
205  *   @t: tunnel to be added
220  * ip6_tnl_unlink - remove tunnel from hash table
222  *   @t: tunnel to be removed
275  * ip6_tnl_create - create a new tunnel
277  *   @p: tunnel parameters
280  *   Create tunnel matching given parameters.
283  *   created tunnel or error pointer
324  * ip6_tnl_locate - find or create tunnel matching given parameters
326  *   @p: tunnel parameters
327  *   @create: != 0 if allowed to create new tunnel if no match found
330  *   ip6_tnl_locate() first tries to locate an existing tunnel
332  *   tunnel device is created and registered for use.
335  *   matching tunnel or error pointer
365  * ip6_tnl_dev_uninit - tunnel device uninitializer
369  *   ip6_tnl_dev_uninit() removes tunnel from its list
459 /* ip6_tnl_err() should handle errors in the tunnel according to the
500 			net_dbg_ratelimited("%s: Too small hop limit or routing loop in tunnel!\n",  in ip6_tnl_err()
516 				net_dbg_ratelimited("%s: Too small encapsulation limit or routing loop in tunnel!\n",  in ip6_tnl_err()
791 static int __ip6_tnl_rcv(struct ip6_tnl *tunnel, struct sk_buff *skb,  in __ip6_tnl_rcv()  argument
803 	     (tunnel->parms.i_flags & TUNNEL_CSUM)) ||  in __ip6_tnl_rcv()
805 	     !(tunnel->parms.i_flags & TUNNEL_CSUM))) {  in __ip6_tnl_rcv()
806 		tunnel->dev->stats.rx_crc_errors++;  in __ip6_tnl_rcv()
807 		tunnel->dev->stats.rx_errors++;  in __ip6_tnl_rcv()
811 	if (tunnel->parms.i_flags & TUNNEL_SEQ) {  in __ip6_tnl_rcv()
813 		    (tunnel->i_seqno &&  in __ip6_tnl_rcv()
814 		     (s32)(ntohl(tpi->seq) - tunnel->i_seqno) < 0)) {  in __ip6_tnl_rcv()
815 			tunnel->dev->stats.rx_fifo_errors++;  in __ip6_tnl_rcv()
816 			tunnel->dev->stats.rx_errors++;  in __ip6_tnl_rcv()
819 		tunnel->i_seqno = ntohl(tpi->seq) + 1;  in __ip6_tnl_rcv()
825 	if (tunnel->dev->type == ARPHRD_ETHER) {  in __ip6_tnl_rcv()
827 			tunnel->dev->stats.rx_length_errors++;  in __ip6_tnl_rcv()
828 			tunnel->dev->stats.rx_errors++;  in __ip6_tnl_rcv()
833 		skb->protocol = eth_type_trans(skb, tunnel->dev);  in __ip6_tnl_rcv()
836 		skb->dev = tunnel->dev;  in __ip6_tnl_rcv()
843 	__skb_tunnel_rx(skb, tunnel->dev, tunnel->net);  in __ip6_tnl_rcv()
845 	err = dscp_ecn_decapsulate(tunnel, ipv6h, skb);  in __ip6_tnl_rcv()
852 			++tunnel->dev->stats.rx_frame_errors;  in __ip6_tnl_rcv()
853 			++tunnel->dev->stats.rx_errors;  in __ip6_tnl_rcv()
858 	dev_sw_netstats_rx_add(tunnel->dev, skb->len);  in __ip6_tnl_rcv()
860 	skb_scrub_packet(skb, !net_eq(tunnel->net, dev_net(tunnel->dev)));  in __ip6_tnl_rcv()
865 	gro_cells_receive(&tunnel->gro_cells, skb);  in __ip6_tnl_rcv()
894 	/* no tunnel info required for ipxip6. */
899 	/* no tunnel info required for ipxip6. */
904 	/* no tunnel info required for mplsip6. */
991  * ip6_tnl_addr_conflict - compare packet addresses to tunnel's own
992  *   @t: the outgoing tunnel device
996  *   Avoid trivial tunneling loop by checking that tunnel exit-point
1051  *   @dev: the outgoing tunnel device
1097 	/* NBMA tunnel */  in ip6_tnl_xmit()
1513  * ip6_tnl_change - update the tunnel parameters
1514  *   @t: tunnel to be changed
1515  *   @p: tunnel configuration parameters
1518  *   ip6_tnl_change() updates the tunnel parameters
1586  *   @dev: virtual device associated with tunnel
1596  *     %SIOCGETTUNNEL: get tunnel parameters for device
1597  *     %SIOCADDTUNNEL: add tunnel matching given tunnel parameters
1598  *     %SIOCCHGTUNNEL: change tunnel parameters to those given
1599  *     %SIOCDELTUNNEL: delete tunnel
1602  *   initialization, can be used for creating other tunnel devices.
1608  *   %-EINVAL if passed tunnel parameters are invalid,
1609  *   %-EEXIST if changing a tunnel's parameters would cause a conflict
1710  * ip6_tnl_change_mtu - change mtu manually for tunnel device
1711  *   @dev: virtual device associated with tunnel
1820  * ip6_tnl_dev_setup - setup virtual tunnel device
1821  *   @dev: virtual device associated with tunnel
1850  * ip6_tnl_dev_init_gen - general initializer for all tunnel devices
1851  *   @dev: virtual device associated with tunnel
1900  * ip6_tnl_dev_init - initializer for all non fallback tunnel devices
1901  *   @dev: virtual device associated with tunnel
1918  * ip6_fb_tnl_dev_init - initializer for fallback tunnel device
2107 	struct ip6_tnl *tunnel = netdev_priv(dev);  in ip6_tnl_fill_info()  local
2108 	struct __ip6_tnl_parm *parm = &tunnel->parms;  in ip6_tnl_fill_info()
2121 	if (nla_put_u16(skb, IFLA_IPTUN_ENCAP_TYPE, tunnel->encap.type) ||  in ip6_tnl_fill_info()
2122 	    nla_put_be16(skb, IFLA_IPTUN_ENCAP_SPORT, tunnel->encap.sport) ||  in ip6_tnl_fill_info()
2123 	    nla_put_be16(skb, IFLA_IPTUN_ENCAP_DPORT, tunnel->encap.dport) ||  in ip6_tnl_fill_info()
2124 	    nla_put_u16(skb, IFLA_IPTUN_ENCAP_FLAGS, tunnel->encap.flags))  in ip6_tnl_fill_info()
2139 	struct ip6_tnl *tunnel = netdev_priv(dev);  in ip6_tnl_get_link_net()  local
2141 	return tunnel->net;  in ip6_tnl_get_link_net()