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Filename :
if_tunnel.h
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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ #ifndef _IF_TUNNEL_H_ #define _IF_TUNNEL_H_ #include <linux/types.h> #include <linux/if.h> #include <linux/ip.h> #include <linux/in6.h> #include <asm/byteorder.h> #define SIOCGETTUNNEL (SIOCDEVPRIVATE + 0) #define SIOCADDTUNNEL (SIOCDEVPRIVATE + 1) #define SIOCDELTUNNEL (SIOCDEVPRIVATE + 2) #define SIOCCHGTUNNEL (SIOCDEVPRIVATE + 3) #define SIOCGETPRL (SIOCDEVPRIVATE + 4) #define SIOCADDPRL (SIOCDEVPRIVATE + 5) #define SIOCDELPRL (SIOCDEVPRIVATE + 6) #define SIOCCHGPRL (SIOCDEVPRIVATE + 7) #define SIOCGET6RD (SIOCDEVPRIVATE + 8) #define SIOCADD6RD (SIOCDEVPRIVATE + 9) #define SIOCDEL6RD (SIOCDEVPRIVATE + 10) #define SIOCCHG6RD (SIOCDEVPRIVATE + 11) #define GRE_CSUM __cpu_to_be16(0x8000) #define GRE_ROUTING __cpu_to_be16(0x4000) #define GRE_KEY __cpu_to_be16(0x2000) #define GRE_SEQ __cpu_to_be16(0x1000) #define GRE_STRICT __cpu_to_be16(0x0800) #define GRE_REC __cpu_to_be16(0x0700) #define GRE_ACK __cpu_to_be16(0x0080) #define GRE_FLAGS __cpu_to_be16(0x0078) #define GRE_VERSION __cpu_to_be16(0x0007) #define GRE_IS_CSUM(f) ((f) & GRE_CSUM) #define GRE_IS_ROUTING(f) ((f) & GRE_ROUTING) #define GRE_IS_KEY(f) ((f) & GRE_KEY) #define GRE_IS_SEQ(f) ((f) & GRE_SEQ) #define GRE_IS_STRICT(f) ((f) & GRE_STRICT) #define GRE_IS_REC(f) ((f) & GRE_REC) #define GRE_IS_ACK(f) ((f) & GRE_ACK) #define GRE_VERSION_0 __cpu_to_be16(0x0000) #define GRE_VERSION_1 __cpu_to_be16(0x0001) #define GRE_PROTO_PPP __cpu_to_be16(0x880b) #define GRE_PPTP_KEY_MASK __cpu_to_be32(0xffff) struct ip_tunnel_parm { char name[IFNAMSIZ]; int link; __be16 i_flags; __be16 o_flags; __be32 i_key; __be32 o_key; struct iphdr iph; }; enum { IFLA_IPTUN_UNSPEC, IFLA_IPTUN_LINK, IFLA_IPTUN_LOCAL, IFLA_IPTUN_REMOTE, IFLA_IPTUN_TTL, IFLA_IPTUN_TOS, IFLA_IPTUN_ENCAP_LIMIT, IFLA_IPTUN_FLOWINFO, IFLA_IPTUN_FLAGS, IFLA_IPTUN_PROTO, IFLA_IPTUN_PMTUDISC, IFLA_IPTUN_6RD_PREFIX, IFLA_IPTUN_6RD_RELAY_PREFIX, IFLA_IPTUN_6RD_PREFIXLEN, IFLA_IPTUN_6RD_RELAY_PREFIXLEN, IFLA_IPTUN_ENCAP_TYPE, IFLA_IPTUN_ENCAP_FLAGS, IFLA_IPTUN_ENCAP_SPORT, IFLA_IPTUN_ENCAP_DPORT, IFLA_IPTUN_COLLECT_METADATA, IFLA_IPTUN_FWMARK, __IFLA_IPTUN_MAX, }; #define IFLA_IPTUN_MAX (__IFLA_IPTUN_MAX - 1) enum tunnel_encap_types { TUNNEL_ENCAP_NONE, TUNNEL_ENCAP_FOU, TUNNEL_ENCAP_GUE, TUNNEL_ENCAP_MPLS, }; #define TUNNEL_ENCAP_FLAG_CSUM (1<<0) #define TUNNEL_ENCAP_FLAG_CSUM6 (1<<1) #define TUNNEL_ENCAP_FLAG_REMCSUM (1<<2) /* SIT-mode i_flags */ #define SIT_ISATAP 0x0001 struct ip_tunnel_prl { __be32 addr; __u16 flags; __u16 __reserved; __u32 datalen; __u32 __reserved2; /* data follows */ }; /* PRL flags */ #define PRL_DEFAULT 0x0001 struct ip_tunnel_6rd { struct in6_addr prefix; __be32 relay_prefix; __u16 prefixlen; __u16 relay_prefixlen; }; enum { IFLA_GRE_UNSPEC, IFLA_GRE_LINK, IFLA_GRE_IFLAGS, IFLA_GRE_OFLAGS, IFLA_GRE_IKEY, IFLA_GRE_OKEY, IFLA_GRE_LOCAL, IFLA_GRE_REMOTE, IFLA_GRE_TTL, IFLA_GRE_TOS, IFLA_GRE_PMTUDISC, IFLA_GRE_ENCAP_LIMIT, IFLA_GRE_FLOWINFO, IFLA_GRE_FLAGS, IFLA_GRE_ENCAP_TYPE, IFLA_GRE_ENCAP_FLAGS, IFLA_GRE_ENCAP_SPORT, IFLA_GRE_ENCAP_DPORT, IFLA_GRE_COLLECT_METADATA, IFLA_GRE_IGNORE_DF, IFLA_GRE_FWMARK, IFLA_GRE_ERSPAN_INDEX, IFLA_GRE_ERSPAN_VER, IFLA_GRE_ERSPAN_DIR, IFLA_GRE_ERSPAN_HWID, __IFLA_GRE_MAX, }; #define IFLA_GRE_MAX (__IFLA_GRE_MAX - 1) /* VTI-mode i_flags */ #define VTI_ISVTI ((__be16)0x0001) enum { IFLA_VTI_UNSPEC, IFLA_VTI_LINK, IFLA_VTI_IKEY, IFLA_VTI_OKEY, IFLA_VTI_LOCAL, IFLA_VTI_REMOTE, IFLA_VTI_FWMARK, __IFLA_VTI_MAX, }; #define IFLA_VTI_MAX (__IFLA_VTI_MAX - 1) /* Historically, tunnel flags have been defined as __be16 and now there are * no free bits left. It is strongly advised to switch the already existing * userspace code to the new *_BIT definitions from down below, as __be16 * can't be simply cast to a wider type on LE systems. All new flags and * code must use *_BIT only. */ #define TUNNEL_CSUM __cpu_to_be16(0x01) #define TUNNEL_ROUTING __cpu_to_be16(0x02) #define TUNNEL_KEY __cpu_to_be16(0x04) #define TUNNEL_SEQ __cpu_to_be16(0x08) #define TUNNEL_STRICT __cpu_to_be16(0x10) #define TUNNEL_REC __cpu_to_be16(0x20) #define TUNNEL_VERSION __cpu_to_be16(0x40) #define TUNNEL_NO_KEY __cpu_to_be16(0x80) #define TUNNEL_DONT_FRAGMENT __cpu_to_be16(0x0100) #define TUNNEL_OAM __cpu_to_be16(0x0200) #define TUNNEL_CRIT_OPT __cpu_to_be16(0x0400) #define TUNNEL_GENEVE_OPT __cpu_to_be16(0x0800) #define TUNNEL_VXLAN_OPT __cpu_to_be16(0x1000) #define TUNNEL_NOCACHE __cpu_to_be16(0x2000) #define TUNNEL_ERSPAN_OPT __cpu_to_be16(0x4000) #define TUNNEL_GTP_OPT __cpu_to_be16(0x8000) #define TUNNEL_OPTIONS_PRESENT \ (TUNNEL_GENEVE_OPT | TUNNEL_VXLAN_OPT | TUNNEL_ERSPAN_OPT | \ TUNNEL_GTP_OPT) enum { IP_TUNNEL_CSUM_BIT = 0U, IP_TUNNEL_ROUTING_BIT, IP_TUNNEL_KEY_BIT, IP_TUNNEL_SEQ_BIT, IP_TUNNEL_STRICT_BIT, IP_TUNNEL_REC_BIT, IP_TUNNEL_VERSION_BIT, IP_TUNNEL_NO_KEY_BIT, IP_TUNNEL_DONT_FRAGMENT_BIT, IP_TUNNEL_OAM_BIT, IP_TUNNEL_CRIT_OPT_BIT, IP_TUNNEL_GENEVE_OPT_BIT, /* OPTIONS_PRESENT */ IP_TUNNEL_VXLAN_OPT_BIT, /* OPTIONS_PRESENT */ IP_TUNNEL_NOCACHE_BIT, IP_TUNNEL_ERSPAN_OPT_BIT, /* OPTIONS_PRESENT */ IP_TUNNEL_GTP_OPT_BIT, /* OPTIONS_PRESENT */ IP_TUNNEL_VTI_BIT, IP_TUNNEL_SIT_ISATAP_BIT = IP_TUNNEL_VTI_BIT, __IP_TUNNEL_FLAG_NUM, }; #endif /* _IF_TUNNEL_H_ */