1 #ifndef _NET_IP6_TUNNEL_H 2 #define _NET_IP6_TUNNEL_H 3 4 #include <linux/ipv6.h> 5 #include <linux/netdevice.h> 6 #include <linux/ip6_tunnel.h> 7 8 /* capable of sending packets */ 9 #define IP6_TNL_F_CAP_XMIT 0x10000 10 /* capable of receiving packets */ 11 #define IP6_TNL_F_CAP_RCV 0x20000 12 13 /* IPv6 tunnel */ 14 15 struct ip6_tnl { 16 struct ip6_tnl __rcu *next; /* next tunnel in list */ 17 struct net_device *dev; /* virtual device associated with tunnel */ 18 struct ip6_tnl_parm parms; /* tunnel configuration parameters */ 19 struct flowi fl; /* flowi template for xmit */ 20 struct dst_entry *dst_cache; /* cached dst */ 21 u32 dst_cookie; 22 }; 23 24 /* Tunnel encapsulation limit destination sub-option */ 25 26 struct ipv6_tlv_tnl_enc_lim { 27 __u8 type; /* type-code for option */ 28 __u8 length; /* option length */ 29 __u8 encap_limit; /* tunnel encapsulation limit */ 30 } __packed; 31 32 #endif 33