include/uapi/linux/if_tunnel.h

   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_ERSPAN_VER,
 141         IFLA_GRE_ERSPAN_DIR,
 142         IFLA_GRE_ERSPAN_HWID,
 143         __IFLA_GRE_MAX,
 144 };
 145
 146 #define IFLA_GRE_MAX    (__IFLA_GRE_MAX - 1)
 147
 148 /* VTI-mode i_flags */
 149 #define VTI_ISVTI ((__force __be16)0x0001)
 150
 151 enum {
 152         IFLA_VTI_UNSPEC,
 153         IFLA_VTI_LINK,
 154         IFLA_VTI_IKEY,
 155         IFLA_VTI_OKEY,
 156         IFLA_VTI_LOCAL,
 157         IFLA_VTI_REMOTE,
 158         IFLA_VTI_FWMARK,
 159         __IFLA_VTI_MAX,
 160 };
 161
 162 #define IFLA_VTI_MAX    (__IFLA_VTI_MAX - 1)
 163
 164 #ifndef __KERNEL__
 165 /* Historically, tunnel flags have been defined as __be16 and now there are
 166  * no free bits left. It is strongly advised to switch the already existing
 167  * userspace code to the new *_BIT definitions from down below, as __be16
 168  * can't be simply cast to a wider type on LE systems. All new flags and
 169  * code must use *_BIT only.
 170  */
 171
 172 #define TUNNEL_CSUM             __cpu_to_be16(0x01)
 173 #define TUNNEL_ROUTING          __cpu_to_be16(0x02)
 174 #define TUNNEL_KEY              __cpu_to_be16(0x04)
 175 #define TUNNEL_SEQ              __cpu_to_be16(0x08)
 176 #define TUNNEL_STRICT           __cpu_to_be16(0x10)
 177 #define TUNNEL_REC              __cpu_to_be16(0x20)
 178 #define TUNNEL_VERSION          __cpu_to_be16(0x40)
 179 #define TUNNEL_NO_KEY           __cpu_to_be16(0x80)
 180 #define TUNNEL_DONT_FRAGMENT    __cpu_to_be16(0x0100)
 181 #define TUNNEL_OAM              __cpu_to_be16(0x0200)
 182 #define TUNNEL_CRIT_OPT         __cpu_to_be16(0x0400)
 183 #define TUNNEL_GENEVE_OPT       __cpu_to_be16(0x0800)
 184 #define TUNNEL_VXLAN_OPT        __cpu_to_be16(0x1000)
 185 #define TUNNEL_NOCACHE          __cpu_to_be16(0x2000)
 186 #define TUNNEL_ERSPAN_OPT       __cpu_to_be16(0x4000)
 187 #define TUNNEL_GTP_OPT          __cpu_to_be16(0x8000)
 188
 189 #define TUNNEL_OPTIONS_PRESENT \
 190                 (TUNNEL_GENEVE_OPT | TUNNEL_VXLAN_OPT | TUNNEL_ERSPAN_OPT | \
 191                 TUNNEL_GTP_OPT)
 192 #endif
 193
 194 enum {
 195         IP_TUNNEL_CSUM_BIT              = 0U,
 196         IP_TUNNEL_ROUTING_BIT,
 197         IP_TUNNEL_KEY_BIT,
 198         IP_TUNNEL_SEQ_BIT,
 199         IP_TUNNEL_STRICT_BIT,
 200         IP_TUNNEL_REC_BIT,
 201         IP_TUNNEL_VERSION_BIT,
 202         IP_TUNNEL_NO_KEY_BIT,
 203         IP_TUNNEL_DONT_FRAGMENT_BIT,
 204         IP_TUNNEL_OAM_BIT,
 205         IP_TUNNEL_CRIT_OPT_BIT,
 206         IP_TUNNEL_GENEVE_OPT_BIT,       /* OPTIONS_PRESENT */
 207         IP_TUNNEL_VXLAN_OPT_BIT,        /* OPTIONS_PRESENT */
 208         IP_TUNNEL_NOCACHE_BIT,
 209         IP_TUNNEL_ERSPAN_OPT_BIT,       /* OPTIONS_PRESENT */
 210         IP_TUNNEL_GTP_OPT_BIT,          /* OPTIONS_PRESENT */
 211
 212         IP_TUNNEL_VTI_BIT,
 213         IP_TUNNEL_SIT_ISATAP_BIT        = IP_TUNNEL_VTI_BIT,
 214
 215         /* Flags starting from here are not available via the old UAPI */
 216         IP_TUNNEL_PFCP_OPT_BIT,         /* OPTIONS_PRESENT */
 217
 218         __IP_TUNNEL_FLAG_NUM,
 219 };
 220
 221 #endif /* _UAPI_IF_TUNNEL_H_ */