1 #ifndef _NETINET_IP6_H 2 #define _NETINET_IP6_H 3 4 #ifdef __cplusplus 5 extern "C" { 6 #endif 7 8 #include <stdint.h> 9 #include <netinet/in.h> 10 #include <endian.h> 11 12 struct ip6_hdr { 13 union { 14 struct ip6_hdrctl { 15 uint32_t ip6_un1_flow; 16 uint16_t ip6_un1_plen; 17 uint8_t ip6_un1_nxt; 18 uint8_t ip6_un1_hlim; 19 } ip6_un1; 20 uint8_t ip6_un2_vfc; 21 } ip6_ctlun; 22 struct in6_addr ip6_src; 23 struct in6_addr ip6_dst; 24 }; 25 26 #define ip6_vfc ip6_ctlun.ip6_un2_vfc 27 #define ip6_flow ip6_ctlun.ip6_un1.ip6_un1_flow 28 #define ip6_plen ip6_ctlun.ip6_un1.ip6_un1_plen 29 #define ip6_nxt ip6_ctlun.ip6_un1.ip6_un1_nxt 30 #define ip6_hlim ip6_ctlun.ip6_un1.ip6_un1_hlim 31 #define ip6_hops ip6_ctlun.ip6_un1.ip6_un1_hlim 32 33 struct ip6_ext { 34 uint8_t ip6e_nxt; 35 uint8_t ip6e_len; 36 }; 37 38 struct ip6_hbh { 39 uint8_t ip6h_nxt; 40 uint8_t ip6h_len; 41 }; 42 43 struct ip6_dest { 44 uint8_t ip6d_nxt; 45 uint8_t ip6d_len; 46 }; 47 48 struct ip6_rthdr { 49 uint8_t ip6r_nxt; 50 uint8_t ip6r_len; 51 uint8_t ip6r_type; 52 uint8_t ip6r_segleft; 53 }; 54 55 struct ip6_rthdr0 { 56 uint8_t ip6r0_nxt; 57 uint8_t ip6r0_len; 58 uint8_t ip6r0_type; 59 uint8_t ip6r0_segleft; 60 uint8_t ip6r0_reserved; 61 uint8_t ip6r0_slmap[3]; 62 struct in6_addr ip6r0_addr[]; 63 }; 64 65 struct ip6_frag { 66 uint8_t ip6f_nxt; 67 uint8_t ip6f_reserved; 68 uint16_t ip6f_offlg; 69 uint32_t ip6f_ident; 70 }; 71 72 #if __BYTE_ORDER == __BIG_ENDIAN 73 #define IP6F_OFF_MASK 0xfff8 74 #define IP6F_RESERVED_MASK 0x0006 75 #define IP6F_MORE_FRAG 0x0001 76 #else 77 #define IP6F_OFF_MASK 0xf8ff 78 #define IP6F_RESERVED_MASK 0x0600 79 #define IP6F_MORE_FRAG 0x0100 80 #endif 81 82 struct ip6_opt { 83 uint8_t ip6o_type; 84 uint8_t ip6o_len; 85 }; 86 87 #define IP6OPT_TYPE(o) ((o) & 0xc0) 88 #define IP6OPT_TYPE_SKIP 0x00 89 #define IP6OPT_TYPE_DISCARD 0x40 90 #define IP6OPT_TYPE_FORCEICMP 0x80 91 #define IP6OPT_TYPE_ICMP 0xc0 92 #define IP6OPT_TYPE_MUTABLE 0x20 93 94 #define IP6OPT_PAD1 0 95 #define IP6OPT_PADN 1 96 97 #define IP6OPT_JUMBO 0xc2 98 #define IP6OPT_NSAP_ADDR 0xc3 99 #define IP6OPT_TUNNEL_LIMIT 0x04 100 #define IP6OPT_ROUTER_ALERT 0x05 101 102 struct ip6_opt_jumbo { 103 uint8_t ip6oj_type; 104 uint8_t ip6oj_len; 105 uint8_t ip6oj_jumbo_len[4]; 106 }; 107 #define IP6OPT_JUMBO_LEN 6 108 109 struct ip6_opt_nsap { 110 uint8_t ip6on_type; 111 uint8_t ip6on_len; 112 uint8_t ip6on_src_nsap_len; 113 uint8_t ip6on_dst_nsap_len; 114 }; 115 116 struct ip6_opt_tunnel { 117 uint8_t ip6ot_type; 118 uint8_t ip6ot_len; 119 uint8_t ip6ot_encap_limit; 120 }; 121 122 struct ip6_opt_router { 123 uint8_t ip6or_type; 124 uint8_t ip6or_len; 125 uint8_t ip6or_value[2]; 126 }; 127 128 #if __BYTE_ORDER == __BIG_ENDIAN 129 #define IP6_ALERT_MLD 0x0000 130 #define IP6_ALERT_RSVP 0x0001 131 #define IP6_ALERT_AN 0x0002 132 #else 133 #define IP6_ALERT_MLD 0x0000 134 #define IP6_ALERT_RSVP 0x0100 135 #define IP6_ALERT_AN 0x0200 136 #endif 137 138 #ifdef __cplusplus 139 } 140 #endif 141 142 #endif 143