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