1 #ifndef _UAPI_IPV6_H 2 #define _UAPI_IPV6_H 3 4 #include <linux/libc-compat.h> 5 #include <linux/types.h> 6 #include <linux/in6.h> 7 #include <asm/byteorder.h> 8 9 /* The latest drafts declared increase in minimal mtu up to 1280. */ 10 11 #define IPV6_MIN_MTU 1280 12 13 /* 14 * Advanced API 15 * source interface/address selection, source routing, etc... 16 * *under construction* 17 */ 18 19 #if __UAPI_DEF_IN6_PKTINFO 20 struct in6_pktinfo { 21 struct in6_addr ipi6_addr; 22 int ipi6_ifindex; 23 }; 24 #endif 25 26 #if __UAPI_DEF_IP6_MTUINFO 27 struct ip6_mtuinfo { 28 struct sockaddr_in6 ip6m_addr; 29 __u32 ip6m_mtu; 30 }; 31 #endif 32 33 struct in6_ifreq { 34 struct in6_addr ifr6_addr; 35 __u32 ifr6_prefixlen; 36 int ifr6_ifindex; 37 }; 38 39 #define IPV6_SRCRT_STRICT 0x01 /* Deprecated; will be removed */ 40 #define IPV6_SRCRT_TYPE_0 0 /* Deprecated; will be removed */ 41 #define IPV6_SRCRT_TYPE_2 2 /* IPv6 type 2 Routing Header */ 42 #define IPV6_SRCRT_TYPE_4 4 /* Segment Routing with IPv6 */ 43 44 /* 45 * routing header 46 */ 47 struct ipv6_rt_hdr { 48 __u8 nexthdr; 49 __u8 hdrlen; 50 __u8 type; 51 __u8 segments_left; 52 53 /* 54 * type specific data 55 * variable length field 56 */ 57 }; 58 59 60 struct ipv6_opt_hdr { 61 __u8 nexthdr; 62 __u8 hdrlen; 63 /* 64 * TLV encoded option data follows. 65 */ 66 } __attribute__((packed)); /* required for some archs */ 67 68 #define ipv6_destopt_hdr ipv6_opt_hdr 69 #define ipv6_hopopt_hdr ipv6_opt_hdr 70 71 /* Router Alert option values (RFC2711) */ 72 #define IPV6_OPT_ROUTERALERT_MLD 0x0000 /* MLD(RFC2710) */ 73 74 /* 75 * routing header type 0 (used in cmsghdr struct) 76 */ 77 78 struct rt0_hdr { 79 struct ipv6_rt_hdr rt_hdr; 80 __u32 reserved; 81 struct in6_addr addr[0]; 82 83 #define rt0_type rt_hdr.type 84 }; 85 86 /* 87 * routing header type 2 88 */ 89 90 struct rt2_hdr { 91 struct ipv6_rt_hdr rt_hdr; 92 __u32 reserved; 93 struct in6_addr addr; 94 95 #define rt2_type rt_hdr.type 96 }; 97 98 /* 99 * home address option in destination options header 100 */ 101 102 struct ipv6_destopt_hao { 103 __u8 type; 104 __u8 length; 105 struct in6_addr addr; 106 } __attribute__((packed)); 107 108 /* 109 * IPv6 fixed header 110 * 111 * BEWARE, it is incorrect. The first 4 bits of flow_lbl 112 * are glued to priority now, forming "class". 113 */ 114 115 struct ipv6hdr { 116 #if defined(__LITTLE_ENDIAN_BITFIELD) 117 __u8 priority:4, 118 version:4; 119 #elif defined(__BIG_ENDIAN_BITFIELD) 120 __u8 version:4, 121 priority:4; 122 #else 123 #error "Please fix <asm/byteorder.h>" 124 #endif 125 __u8 flow_lbl[3]; 126 127 __be16 payload_len; 128 __u8 nexthdr; 129 __u8 hop_limit; 130 131 struct in6_addr saddr; 132 struct in6_addr daddr; 133 }; 134 135 136 /* index values for the variables in ipv6_devconf */ 137 enum { 138 DEVCONF_FORWARDING = 0, 139 DEVCONF_HOPLIMIT, 140 DEVCONF_MTU6, 141 DEVCONF_ACCEPT_RA, 142 DEVCONF_ACCEPT_REDIRECTS, 143 DEVCONF_AUTOCONF, 144 DEVCONF_DAD_TRANSMITS, 145 DEVCONF_RTR_SOLICITS, 146 DEVCONF_RTR_SOLICIT_INTERVAL, 147 DEVCONF_RTR_SOLICIT_DELAY, 148 DEVCONF_USE_TEMPADDR, 149 DEVCONF_TEMP_VALID_LFT, 150 DEVCONF_TEMP_PREFERED_LFT, 151 DEVCONF_REGEN_MAX_RETRY, 152 DEVCONF_MAX_DESYNC_FACTOR, 153 DEVCONF_MAX_ADDRESSES, 154 DEVCONF_FORCE_MLD_VERSION, 155 DEVCONF_ACCEPT_RA_DEFRTR, 156 DEVCONF_ACCEPT_RA_PINFO, 157 DEVCONF_ACCEPT_RA_RTR_PREF, 158 DEVCONF_RTR_PROBE_INTERVAL, 159 DEVCONF_ACCEPT_RA_RT_INFO_MAX_PLEN, 160 DEVCONF_PROXY_NDP, 161 DEVCONF_OPTIMISTIC_DAD, 162 DEVCONF_ACCEPT_SOURCE_ROUTE, 163 DEVCONF_MC_FORWARDING, 164 DEVCONF_DISABLE_IPV6, 165 DEVCONF_ACCEPT_DAD, 166 DEVCONF_FORCE_TLLAO, 167 DEVCONF_NDISC_NOTIFY, 168 DEVCONF_MLDV1_UNSOLICITED_REPORT_INTERVAL, 169 DEVCONF_MLDV2_UNSOLICITED_REPORT_INTERVAL, 170 DEVCONF_SUPPRESS_FRAG_NDISC, 171 DEVCONF_ACCEPT_RA_FROM_LOCAL, 172 DEVCONF_USE_OPTIMISTIC, 173 DEVCONF_ACCEPT_RA_MTU, 174 DEVCONF_STABLE_SECRET, 175 DEVCONF_USE_OIF_ADDRS_ONLY, 176 DEVCONF_ACCEPT_RA_MIN_HOP_LIMIT, 177 DEVCONF_IGNORE_ROUTES_WITH_LINKDOWN, 178 DEVCONF_DROP_UNICAST_IN_L2_MULTICAST, 179 DEVCONF_DROP_UNSOLICITED_NA, 180 DEVCONF_KEEP_ADDR_ON_DOWN, 181 DEVCONF_RTR_SOLICIT_MAX_INTERVAL, 182 DEVCONF_SEG6_ENABLED, 183 DEVCONF_SEG6_REQUIRE_HMAC, 184 DEVCONF_ENHANCED_DAD, 185 DEVCONF_MAX 186 }; 187 188 189 #endif /* _UAPI_IPV6_H */ 190