5 #ifndef _NET_IP6_TUNNEL_H
6 #define _NET_IP6_TUNNEL_H
8 #include <linux/ipv6.h>
9 #include <linux/netdevice.h>
10 #include <linux/ip6_tunnel.h>
12 /* capable of sending packets */
13 #define IP6_TNL_F_CAP_XMIT 0x10000
14 /* capable of receiving packets */
15 #define IP6_TNL_F_CAP_RCV 0x20000
20 struct ip6_tnl *next; /* next tunnel in list */
21 struct net_device *dev; /* virtual device associated with tunnel */
22 struct net_device_stats stat; /* statistics for tunnel device */
23 int recursion; /* depth of hard_start_xmit recursion */
24 struct ip6_tnl_parm parms; /* tunnel configuration parameters */
25 struct flowi fl; /* flowi template for xmit */
26 struct dst_entry *dst_cache; /* cached dst */
30 /* Tunnel encapsulation limit destination sub-option */
32 struct ipv6_tlv_tnl_enc_lim {
33 __u8 type; /* type-code for option */
34 __u8 length; /* option length */
35 __u8 encap_limit; /* tunnel encapsulation limit */
36 } __attribute__ ((packed));