include/uapi/linux/ip6_tunnel.h

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 #ifndef _IP6_TUNNEL_H
   3 #define _IP6_TUNNEL_H
   4
   5 #include <linux/types.h>
   6 #include <linux/if.h>           /* For IFNAMSIZ. */
   7 #include <linux/in6.h>          /* For struct in6_addr. */
   8
   9 #define IPV6_TLV_TNL_ENCAP_LIMIT 4
  10 #define IPV6_DEFAULT_TNL_ENCAP_LIMIT 4
  11
  12 /* don't add encapsulation limit if one isn't present in inner packet */
  13 #define IP6_TNL_F_IGN_ENCAP_LIMIT 0x1
  14 /* copy the traffic class field from the inner packet */
  15 #define IP6_TNL_F_USE_ORIG_TCLASS 0x2
  16 /* copy the flowlabel from the inner packet */
  17 #define IP6_TNL_F_USE_ORIG_FLOWLABEL 0x4
  18 /* being used for Mobile IPv6 */
  19 #define IP6_TNL_F_MIP6_DEV 0x8
  20 /* copy DSCP from the outer packet */
  21 #define IP6_TNL_F_RCV_DSCP_COPY 0x10
  22 /* copy fwmark from inner packet */
  23 #define IP6_TNL_F_USE_ORIG_FWMARK 0x20
  24 /* allow remote endpoint on the local node */
  25 #define IP6_TNL_F_ALLOW_LOCAL_REMOTE 0x40
  26
  27 struct ip6_tnl_parm {
  28         char name[IFNAMSIZ];    /* name of tunnel device */
  29         int link;               /* ifindex of underlying L2 interface */
  30         __u8 proto;             /* tunnel protocol */
  31         __u8 encap_limit;       /* encapsulation limit for tunnel */
  32         __u8 hop_limit;         /* hop limit for tunnel */
  33         __be32 flowinfo;        /* traffic class and flowlabel for tunnel */
  34         __u32 flags;            /* tunnel flags */
  35         struct in6_addr laddr;  /* local tunnel end-point address */
  36         struct in6_addr raddr;  /* remote tunnel end-point address */
  37 };
  38
  39 struct ip6_tnl_parm2 {
  40         char name[IFNAMSIZ];    /* name of tunnel device */
  41         int link;               /* ifindex of underlying L2 interface */
  42         __u8 proto;             /* tunnel protocol */
  43         __u8 encap_limit;       /* encapsulation limit for tunnel */
  44         __u8 hop_limit;         /* hop limit for tunnel */
  45         __be32 flowinfo;        /* traffic class and flowlabel for tunnel */
  46         __u32 flags;            /* tunnel flags */
  47         struct in6_addr laddr;  /* local tunnel end-point address */
  48         struct in6_addr raddr;  /* remote tunnel end-point address */
  49
  50         __be16                  i_flags;
  51         __be16                  o_flags;
  52         __be32                  i_key;
  53         __be32                  o_key;
  54 };
  55
  56 #endif