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 /* determine capability on a per-packet basis */ 13 #define IP6_TNL_F_CAP_PER_PACKET 0x40000 14 15 /* IPv6 tunnel */ 16 17 struct ip6_tnl { 18 struct ip6_tnl __rcu *next; /* next tunnel in list */ 19 struct net_device *dev; /* virtual device associated with tunnel */ 20 struct ip6_tnl_parm parms; /* tunnel configuration parameters */ 21 struct flowi fl; /* flowi template for xmit */ 22 struct dst_entry *dst_cache; /* cached dst */ 23 u32 dst_cookie; 24 }; 25 26 /* Tunnel encapsulation limit destination sub-option */ 27 28 struct ipv6_tlv_tnl_enc_lim { 29 __u8 type; /* type-code for option */ 30 __u8 length; /* option length */ 31 __u8 encap_limit; /* tunnel encapsulation limit */ 32 } __packed; 33 34 #endif 35