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The C and C++ Include Header Files

/usr/include/linux/if_tunnel.h


$ cat -n /usr/include/linux/if_tunnel.h

     1	/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
     2	#ifndef _IF_TUNNEL_H_
     3	#define _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	
    81		__IFLA_IPTUN_VENDOR_BREAK, /* Ensure new entries do not hit the below. */
    82		IFLA_IPTUN_FAN_MAP = 33,
    83	
    84		__IFLA_IPTUN_MAX,
    85	};
    86	#define IFLA_IPTUN_MAX	(__IFLA_IPTUN_MAX - 1)
    87	
    88	enum tunnel_encap_types {
    89		TUNNEL_ENCAP_NONE,
    90		TUNNEL_ENCAP_FOU,
    91		TUNNEL_ENCAP_GUE,
    92		TUNNEL_ENCAP_MPLS,
    93	};
    94	
    95	#define TUNNEL_ENCAP_FLAG_CSUM		(1<<0)
    96	#define TUNNEL_ENCAP_FLAG_CSUM6		(1<<1)
    97	#define TUNNEL_ENCAP_FLAG_REMCSUM	(1<<2)
    98	
    99	/* SIT-mode i_flags */
   100	#define	SIT_ISATAP	0x0001
   101	
   102	struct ip_tunnel_prl {
   103		__be32			addr;
   104		__u16			flags;
   105		__u16			__reserved;
   106		__u32			datalen;
   107		__u32			__reserved2;
   108		/* data follows */
   109	};
   110	
   111	/* PRL flags */
   112	#define	PRL_DEFAULT		0x0001
   113	
   114	struct ip_tunnel_6rd {
   115		struct in6_addr		prefix;
   116		__be32			relay_prefix;
   117		__u16			prefixlen;
   118		__u16			relay_prefixlen;
   119	};
   120	
   121	enum {
   122		IFLA_GRE_UNSPEC,
   123		IFLA_GRE_LINK,
   124		IFLA_GRE_IFLAGS,
   125		IFLA_GRE_OFLAGS,
   126		IFLA_GRE_IKEY,
   127		IFLA_GRE_OKEY,
   128		IFLA_GRE_LOCAL,
   129		IFLA_GRE_REMOTE,
   130		IFLA_GRE_TTL,
   131		IFLA_GRE_TOS,
   132		IFLA_GRE_PMTUDISC,
   133		IFLA_GRE_ENCAP_LIMIT,
   134		IFLA_GRE_FLOWINFO,
   135		IFLA_GRE_FLAGS,
   136		IFLA_GRE_ENCAP_TYPE,
   137		IFLA_GRE_ENCAP_FLAGS,
   138		IFLA_GRE_ENCAP_SPORT,
   139		IFLA_GRE_ENCAP_DPORT,
   140		IFLA_GRE_COLLECT_METADATA,
   141		IFLA_GRE_IGNORE_DF,
   142		IFLA_GRE_FWMARK,
   143		IFLA_GRE_ERSPAN_INDEX,
   144		IFLA_GRE_ERSPAN_VER,
   145		IFLA_GRE_ERSPAN_DIR,
   146		IFLA_GRE_ERSPAN_HWID,
   147		__IFLA_GRE_MAX,
   148	};
   149	
   150	#define IFLA_GRE_MAX	(__IFLA_GRE_MAX - 1)
   151	
   152	/* VTI-mode i_flags */
   153	#define VTI_ISVTI ((__be16)0x0001)
   154	
   155	enum {
   156		IFLA_VTI_UNSPEC,
   157		IFLA_VTI_LINK,
   158		IFLA_VTI_IKEY,
   159		IFLA_VTI_OKEY,
   160		IFLA_VTI_LOCAL,
   161		IFLA_VTI_REMOTE,
   162		IFLA_VTI_FWMARK,
   163		__IFLA_VTI_MAX,
   164	};
   165	
   166	#define IFLA_VTI_MAX	(__IFLA_VTI_MAX - 1)
   167	
   168	#define TUNNEL_CSUM		__cpu_to_be16(0x01)
   169	#define TUNNEL_ROUTING		__cpu_to_be16(0x02)
   170	#define TUNNEL_KEY		__cpu_to_be16(0x04)
   171	#define TUNNEL_SEQ		__cpu_to_be16(0x08)
   172	#define TUNNEL_STRICT		__cpu_to_be16(0x10)
   173	#define TUNNEL_REC		__cpu_to_be16(0x20)
   174	#define TUNNEL_VERSION		__cpu_to_be16(0x40)
   175	#define TUNNEL_NO_KEY		__cpu_to_be16(0x80)
   176	#define TUNNEL_DONT_FRAGMENT    __cpu_to_be16(0x0100)
   177	#define TUNNEL_OAM		__cpu_to_be16(0x0200)
   178	#define TUNNEL_CRIT_OPT		__cpu_to_be16(0x0400)
   179	#define TUNNEL_GENEVE_OPT	__cpu_to_be16(0x0800)
   180	#define TUNNEL_VXLAN_OPT	__cpu_to_be16(0x1000)
   181	#define TUNNEL_NOCACHE		__cpu_to_be16(0x2000)
   182	#define TUNNEL_ERSPAN_OPT	__cpu_to_be16(0x4000)
   183	#define TUNNEL_GTP_OPT		__cpu_to_be16(0x8000)
   184	
   185	#define TUNNEL_OPTIONS_PRESENT \
   186			(TUNNEL_GENEVE_OPT | TUNNEL_VXLAN_OPT | TUNNEL_ERSPAN_OPT | \
   187			TUNNEL_GTP_OPT)
   188	
   189	enum {
   190		IFLA_FAN_UNSPEC,
   191		IFLA_FAN_MAPPING,
   192		__IFLA_FAN_MAX,
   193	};
   194	
   195	#define IFLA_FAN_MAX (__IFLA_FAN_MAX - 1)
   196	
   197	struct ifla_fan_map {
   198		__be32		underlay;
   199		__be32		overlay;
   200		__u16		underlay_prefix;
   201		__u16		overlay_prefix;
   202	};
   203	
   204	#endif /* _IF_TUNNEL_H_ */