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