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      1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
      2 #ifndef _UAPI_IF_TUNNEL_H_
      3 #define _UAPI_IF_TUNNEL_H_
      4 
      5 #include <linux/types.h>
      6 #include <linux/if.h>
      7 #include <linux/ip.h>
      8 #include <linux/in6.h>
      9 #include <asm/byteorder.h>
     10 
     11 
     12 #define SIOCGETTUNNEL   (SIOCDEVPRIVATE + 0)
     13 #define SIOCADDTUNNEL   (SIOCDEVPRIVATE + 1)
     14 #define SIOCDELTUNNEL   (SIOCDEVPRIVATE + 2)
     15 #define SIOCCHGTUNNEL   (SIOCDEVPRIVATE + 3)
     16 #define SIOCGETPRL      (SIOCDEVPRIVATE + 4)
     17 #define SIOCADDPRL      (SIOCDEVPRIVATE + 5)
     18 #define SIOCDELPRL      (SIOCDEVPRIVATE + 6)
     19 #define SIOCCHGPRL      (SIOCDEVPRIVATE + 7)
     20 #define SIOCGET6RD      (SIOCDEVPRIVATE + 8)
     21 #define SIOCADD6RD      (SIOCDEVPRIVATE + 9)
     22 #define SIOCDEL6RD      (SIOCDEVPRIVATE + 10)
     23 #define SIOCCHG6RD      (SIOCDEVPRIVATE + 11)
     24 
     25 #define GRE_CSUM	__cpu_to_be16(0x8000)
     26 #define GRE_ROUTING	__cpu_to_be16(0x4000)
     27 #define GRE_KEY		__cpu_to_be16(0x2000)
     28 #define GRE_SEQ		__cpu_to_be16(0x1000)
     29 #define GRE_STRICT	__cpu_to_be16(0x0800)
     30 #define GRE_REC		__cpu_to_be16(0x0700)
     31 #define GRE_ACK		__cpu_to_be16(0x0080)
     32 #define GRE_FLAGS	__cpu_to_be16(0x0078)
     33 #define GRE_VERSION	__cpu_to_be16(0x0007)
     34 
     35 #define GRE_IS_CSUM(f)		((f) & GRE_CSUM)
     36 #define GRE_IS_ROUTING(f)	((f) & GRE_ROUTING)
     37 #define GRE_IS_KEY(f)		((f) & GRE_KEY)
     38 #define GRE_IS_SEQ(f)		((f) & GRE_SEQ)
     39 #define GRE_IS_STRICT(f)	((f) & GRE_STRICT)
     40 #define GRE_IS_REC(f)		((f) & GRE_REC)
     41 #define GRE_IS_ACK(f)		((f) & GRE_ACK)
     42 
     43 #define GRE_VERSION_0		__cpu_to_be16(0x0000)
     44 #define GRE_VERSION_1		__cpu_to_be16(0x0001)
     45 #define GRE_PROTO_PPP		__cpu_to_be16(0x880b)
     46 #define GRE_PPTP_KEY_MASK	__cpu_to_be32(0xffff)
     47 
     48 struct ip_tunnel_parm {
     49 	char			name[IFNAMSIZ];
     50 	int			link;
     51 	__be16			i_flags;
     52 	__be16			o_flags;
     53 	__be32			i_key;
     54 	__be32			o_key;
     55 	struct iphdr		iph;
     56 };
     57 
     58 enum {
     59 	IFLA_IPTUN_UNSPEC,
     60 	IFLA_IPTUN_LINK,
     61 	IFLA_IPTUN_LOCAL,
     62 	IFLA_IPTUN_REMOTE,
     63 	IFLA_IPTUN_TTL,
     64 	IFLA_IPTUN_TOS,
     65 	IFLA_IPTUN_ENCAP_LIMIT,
     66 	IFLA_IPTUN_FLOWINFO,
     67 	IFLA_IPTUN_FLAGS,
     68 	IFLA_IPTUN_PROTO,
     69 	IFLA_IPTUN_PMTUDISC,
     70 	IFLA_IPTUN_6RD_PREFIX,
     71 	IFLA_IPTUN_6RD_RELAY_PREFIX,
     72 	IFLA_IPTUN_6RD_PREFIXLEN,
     73 	IFLA_IPTUN_6RD_RELAY_PREFIXLEN,
     74 	IFLA_IPTUN_ENCAP_TYPE,
     75 	IFLA_IPTUN_ENCAP_FLAGS,
     76 	IFLA_IPTUN_ENCAP_SPORT,
     77 	IFLA_IPTUN_ENCAP_DPORT,
     78 	IFLA_IPTUN_COLLECT_METADATA,
     79 	IFLA_IPTUN_FWMARK,
     80 	__IFLA_IPTUN_MAX,
     81 };
     82 #define IFLA_IPTUN_MAX	(__IFLA_IPTUN_MAX - 1)
     83 
     84 enum tunnel_encap_types {
     85 	TUNNEL_ENCAP_NONE,
     86 	TUNNEL_ENCAP_FOU,
     87 	TUNNEL_ENCAP_GUE,
     88 	TUNNEL_ENCAP_MPLS,
     89 };
     90 
     91 #define TUNNEL_ENCAP_FLAG_CSUM		(1<<0)
     92 #define TUNNEL_ENCAP_FLAG_CSUM6		(1<<1)
     93 #define TUNNEL_ENCAP_FLAG_REMCSUM	(1<<2)
     94 
     95 /* SIT-mode i_flags */
     96 #define	SIT_ISATAP	0x0001
     97 
     98 struct ip_tunnel_prl {
     99 	__be32			addr;
    100 	__u16			flags;
    101 	__u16			__reserved;
    102 	__u32			datalen;
    103 	__u32			__reserved2;
    104 	/* data follows */
    105 };
    106 
    107 /* PRL flags */
    108 #define	PRL_DEFAULT		0x0001
    109 
    110 struct ip_tunnel_6rd {
    111 	struct in6_addr		prefix;
    112 	__be32			relay_prefix;
    113 	__u16			prefixlen;
    114 	__u16			relay_prefixlen;
    115 };
    116 
    117 enum {
    118 	IFLA_GRE_UNSPEC,
    119 	IFLA_GRE_LINK,
    120 	IFLA_GRE_IFLAGS,
    121 	IFLA_GRE_OFLAGS,
    122 	IFLA_GRE_IKEY,
    123 	IFLA_GRE_OKEY,
    124 	IFLA_GRE_LOCAL,
    125 	IFLA_GRE_REMOTE,
    126 	IFLA_GRE_TTL,
    127 	IFLA_GRE_TOS,
    128 	IFLA_GRE_PMTUDISC,
    129 	IFLA_GRE_ENCAP_LIMIT,
    130 	IFLA_GRE_FLOWINFO,
    131 	IFLA_GRE_FLAGS,
    132 	IFLA_GRE_ENCAP_TYPE,
    133 	IFLA_GRE_ENCAP_FLAGS,
    134 	IFLA_GRE_ENCAP_SPORT,
    135 	IFLA_GRE_ENCAP_DPORT,
    136 	IFLA_GRE_COLLECT_METADATA,
    137 	IFLA_GRE_IGNORE_DF,
    138 	IFLA_GRE_FWMARK,
    139 	IFLA_GRE_ERSPAN_INDEX,
    140 	__IFLA_GRE_MAX,
    141 };
    142 
    143 #define IFLA_GRE_MAX	(__IFLA_GRE_MAX - 1)
    144 
    145 /* VTI-mode i_flags */
    146 #define VTI_ISVTI ((__force __be16)0x0001)
    147 
    148 enum {
    149 	IFLA_VTI_UNSPEC,
    150 	IFLA_VTI_LINK,
    151 	IFLA_VTI_IKEY,
    152 	IFLA_VTI_OKEY,
    153 	IFLA_VTI_LOCAL,
    154 	IFLA_VTI_REMOTE,
    155 	IFLA_VTI_FWMARK,
    156 	__IFLA_VTI_MAX,
    157 };
    158 
    159 #define IFLA_VTI_MAX	(__IFLA_VTI_MAX - 1)
    160 #endif /* _UAPI_IF_TUNNEL_H_ */
    161