| 1 | /* Copyright (C) 1991-1999, 2000, 2001 Free Software Foundation, Inc. |
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| 2 | This file is part of the GNU C Library. |
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| 3 | |
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| 4 | The GNU C Library is free software; you can redistribute it and/or |
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| 5 | modify it under the terms of the GNU Lesser General Public |
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| 6 | License as published by the Free Software Foundation; either |
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| 7 | version 2.1 of the License, or (at your option) any later version. |
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| 8 | |
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| 9 | The GNU C Library is distributed in the hope that it will be useful, |
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | Lesser General Public License for more details. |
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| 13 | |
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| 14 | You should have received a copy of the GNU Lesser General Public |
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| 15 | License along with the GNU C Library; if not, write to the Free |
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| 16 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
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| 17 | 02111-1307 USA. */ |
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| 18 | |
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| 19 | #ifndef _NETINET_IN_H |
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| 20 | #define _NETINET_IN_H 1 |
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| 21 | |
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| 22 | #include <features.h> |
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| 23 | #include <stdint.h> |
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| 24 | #include <bits/types.h> |
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| 25 | |
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| 26 | |
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| 27 | __BEGIN_DECLS |
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| 28 | |
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| 29 | /* Standard well-defined IP protocols. */ |
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| 30 | enum |
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| 31 | { |
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| 32 | IPPROTO_IP = 0, /* Dummy protocol for TCP. */ |
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| 33 | #define IPPROTO_IP IPPROTO_IP |
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| 34 | IPPROTO_HOPOPTS = 0, /* IPv6 Hop-by-Hop options. */ |
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| 35 | #define IPPROTO_HOPOPTS IPPROTO_HOPOPTS |
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| 36 | IPPROTO_ICMP = 1, /* Internet Control Message Protocol. */ |
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| 37 | #define IPPROTO_ICMP IPPROTO_ICMP |
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| 38 | IPPROTO_IGMP = 2, /* Internet Group Management Protocol. */ |
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| 39 | #define IPPROTO_IGMP IPPROTO_IGMP |
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| 40 | IPPROTO_IPIP = 4, /* IPIP tunnels (older KA9Q tunnels use 94). */ |
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| 41 | #define IPPROTO_IPIP IPPROTO_IPIP |
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| 42 | IPPROTO_TCP = 6, /* Transmission Control Protocol. */ |
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| 43 | #define IPPROTO_TCP IPPROTO_TCP |
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| 44 | IPPROTO_EGP = 8, /* Exterior Gateway Protocol. */ |
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| 45 | #define IPPROTO_EGP IPPROTO_EGP |
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| 46 | IPPROTO_PUP = 12, /* PUP protocol. */ |
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| 47 | #define IPPROTO_PUP IPPROTO_PUP |
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| 48 | IPPROTO_UDP = 17, /* User Datagram Protocol. */ |
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| 49 | #define IPPROTO_UDP IPPROTO_UDP |
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| 50 | IPPROTO_IDP = 22, /* XNS IDP protocol. */ |
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| 51 | #define IPPROTO_IDP IPPROTO_IDP |
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| 52 | IPPROTO_TP = 29, /* SO Transport Protocol Class 4. */ |
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| 53 | #define IPPROTO_TP IPPROTO_TP |
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| 54 | IPPROTO_IPV6 = 41, /* IPv6 header. */ |
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| 55 | #define IPPROTO_IPV6 IPPROTO_IPV6 |
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| 56 | IPPROTO_ROUTING = 43, /* IPv6 routing header. */ |
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| 57 | #define IPPROTO_ROUTING IPPROTO_ROUTING |
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| 58 | IPPROTO_FRAGMENT = 44, /* IPv6 fragmentation header. */ |
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| 59 | #define IPPROTO_FRAGMENT IPPROTO_FRAGMENT |
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| 60 | IPPROTO_RSVP = 46, /* Reservation Protocol. */ |
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| 61 | #define IPPROTO_RSVP IPPROTO_RSVP |
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| 62 | IPPROTO_GRE = 47, /* General Routing Encapsulation. */ |
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| 63 | #define IPPROTO_GRE IPPROTO_GRE |
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| 64 | IPPROTO_ESP = 50, /* encapsulating security payload. */ |
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| 65 | #define IPPROTO_ESP IPPROTO_ESP |
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| 66 | IPPROTO_AH = 51, /* authentication header. */ |
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| 67 | #define IPPROTO_AH IPPROTO_AH |
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| 68 | IPPROTO_ICMPV6 = 58, /* ICMPv6. */ |
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| 69 | #define IPPROTO_ICMPV6 IPPROTO_ICMPV6 |
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| 70 | IPPROTO_NONE = 59, /* IPv6 no next header. */ |
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| 71 | #define IPPROTO_NONE IPPROTO_NONE |
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| 72 | IPPROTO_DSTOPTS = 60, /* IPv6 destination options. */ |
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| 73 | #define IPPROTO_DSTOPTS IPPROTO_DSTOPTS |
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| 74 | IPPROTO_MTP = 92, /* Multicast Transport Protocol. */ |
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| 75 | #define IPPROTO_MTP IPPROTO_MTP |
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| 76 | IPPROTO_ENCAP = 98, /* Encapsulation Header. */ |
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| 77 | #define IPPROTO_ENCAP IPPROTO_ENCAP |
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| 78 | IPPROTO_PIM = 103, /* Protocol Independent Multicast. */ |
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| 79 | #define IPPROTO_PIM IPPROTO_PIM |
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| 80 | IPPROTO_COMP = 108, /* Compression Header Protocol. */ |
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| 81 | #define IPPROTO_COMP IPPROTO_COMP |
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| 82 | IPPROTO_RAW = 255, /* Raw IP packets. */ |
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| 83 | #define IPPROTO_RAW IPPROTO_RAW |
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| 84 | IPPROTO_MAX |
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| 85 | }; |
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| 86 | |
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| 87 | |
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| 88 | /* Type to represent a port. */ |
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| 89 | typedef uint16_t in_port_t; |
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| 90 | |
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| 91 | /* Standard well-known ports. */ |
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| 92 | enum |
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| 93 | { |
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| 94 | IPPORT_ECHO = 7, /* Echo service. */ |
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| 95 | IPPORT_DISCARD = 9, /* Discard transmissions service. */ |
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| 96 | IPPORT_SYSTAT = 11, /* System status service. */ |
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| 97 | IPPORT_DAYTIME = 13, /* Time of day service. */ |
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| 98 | IPPORT_NETSTAT = 15, /* Network status service. */ |
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| 99 | IPPORT_FTP = 21, /* File Transfer Protocol. */ |
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| 100 | IPPORT_TELNET = 23, /* Telnet protocol. */ |
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| 101 | IPPORT_SMTP = 25, /* Simple Mail Transfer Protocol. */ |
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| 102 | IPPORT_TIMESERVER = 37, /* Timeserver service. */ |
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| 103 | IPPORT_NAMESERVER = 42, /* Domain Name Service. */ |
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| 104 | IPPORT_WHOIS = 43, /* Internet Whois service. */ |
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| 105 | IPPORT_MTP = 57, |
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| 106 | |
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| 107 | IPPORT_TFTP = 69, /* Trivial File Transfer Protocol. */ |
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| 108 | IPPORT_RJE = 77, |
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| 109 | IPPORT_FINGER = 79, /* Finger service. */ |
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| 110 | IPPORT_TTYLINK = 87, |
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| 111 | IPPORT_SUPDUP = 95, /* SUPDUP protocol. */ |
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| 112 | |
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| 113 | |
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| 114 | IPPORT_EXECSERVER = 512, /* execd service. */ |
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| 115 | IPPORT_LOGINSERVER = 513, /* rlogind service. */ |
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| 116 | IPPORT_CMDSERVER = 514, |
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| 117 | IPPORT_EFSSERVER = 520, |
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| 118 | |
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| 119 | /* UDP ports. */ |
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| 120 | IPPORT_BIFFUDP = 512, |
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| 121 | IPPORT_WHOSERVER = 513, |
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| 122 | IPPORT_ROUTESERVER = 520, |
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| 123 | |
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| 124 | /* Ports less than this value are reserved for privileged processes. */ |
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| 125 | IPPORT_RESERVED = 1024, |
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| 126 | |
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| 127 | /* Ports greater this value are reserved for (non-privileged) servers. */ |
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| 128 | IPPORT_USERRESERVED = 5000 |
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| 129 | }; |
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| 130 | |
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| 131 | |
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| 132 | /* Internet address. */ |
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| 133 | typedef uint32_t in_addr_t; |
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| 134 | struct in_addr |
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| 135 | { |
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| 136 | in_addr_t s_addr; |
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| 137 | }; |
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| 138 | |
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| 139 | |
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| 140 | /* Definitions of the bits in an Internet address integer. |
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| 141 | |
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| 142 | On subnets, host and network parts are found according to |
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| 143 | the subnet mask, not these masks. */ |
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| 144 | |
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| 145 | #define IN_CLASSA(a) ((((in_addr_t)(a)) & 0x80000000) == 0) |
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| 146 | #define IN_CLASSA_NET 0xff000000 |
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| 147 | #define IN_CLASSA_NSHIFT 24 |
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| 148 | #define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET) |
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| 149 | #define IN_CLASSA_MAX 128 |
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| 150 | |
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| 151 | #define IN_CLASSB(a) ((((in_addr_t)(a)) & 0xc0000000) == 0x80000000) |
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| 152 | #define IN_CLASSB_NET 0xffff0000 |
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| 153 | #define IN_CLASSB_NSHIFT 16 |
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| 154 | #define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET) |
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| 155 | #define IN_CLASSB_MAX 65536 |
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| 156 | |
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| 157 | #define IN_CLASSC(a) ((((in_addr_t)(a)) & 0xe0000000) == 0xc0000000) |
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| 158 | #define IN_CLASSC_NET 0xffffff00 |
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| 159 | #define IN_CLASSC_NSHIFT 8 |
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| 160 | #define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET) |
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| 161 | |
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| 162 | #define IN_CLASSD(a) ((((in_addr_t)(a)) & 0xf0000000) == 0xe0000000) |
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| 163 | #define IN_MULTICAST(a) IN_CLASSD(a) |
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| 164 | |
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| 165 | #define IN_EXPERIMENTAL(a) ((((in_addr_t)(a)) & 0xe0000000) == 0xe0000000) |
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| 166 | #define IN_BADCLASS(a) ((((in_addr_t)(a)) & 0xf0000000) == 0xf0000000) |
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| 167 | |
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| 168 | /* Address to accept any incoming messages. */ |
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| 169 | #define INADDR_ANY ((in_addr_t) 0x00000000) |
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| 170 | /* Address to send to all hosts. */ |
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| 171 | #define INADDR_BROADCAST ((in_addr_t) 0xffffffff) |
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| 172 | /* Address indicating an error return. */ |
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| 173 | #define INADDR_NONE ((in_addr_t) 0xffffffff) |
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| 174 | |
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| 175 | /* Network number for local host loopback. */ |
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| 176 | #define IN_LOOPBACKNET 127 |
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| 177 | /* Address to loopback in software to local host. */ |
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| 178 | #ifndef INADDR_LOOPBACK |
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| 179 | # define INADDR_LOOPBACK ((in_addr_t) 0x7f000001) /* Inet 127.0.0.1. */ |
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| 180 | #endif |
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| 181 | |
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| 182 | /* Defines for Multicast INADDR. */ |
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| 183 | #define INADDR_UNSPEC_GROUP ((in_addr_t) 0xe0000000) /* 224.0.0.0 */ |
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| 184 | #define INADDR_ALLHOSTS_GROUP ((in_addr_t) 0xe0000001) /* 224.0.0.1 */ |
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| 185 | #define INADDR_ALLRTRS_GROUP ((in_addr_t) 0xe0000002) /* 224.0.0.2 */ |
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| 186 | #define INADDR_MAX_LOCAL_GROUP ((in_addr_t) 0xe00000ff) /* 224.0.0.255 */ |
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| 187 | |
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| 188 | |
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| 189 | /* IPv6 address */ |
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| 190 | struct in6_addr |
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| 191 | { |
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| 192 | union |
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| 193 | { |
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| 194 | uint8_t u6_addr8[16]; |
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| 195 | uint16_t u6_addr16[8]; |
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| 196 | uint32_t u6_addr32[4]; |
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| 197 | } in6_u; |
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| 198 | #define s6_addr in6_u.u6_addr8 |
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| 199 | #define s6_addr16 in6_u.u6_addr16 |
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| 200 | #define s6_addr32 in6_u.u6_addr32 |
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| 201 | }; |
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| 202 | |
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| 203 | extern const struct in6_addr in6addr_any; /* :: */ |
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| 204 | extern const struct in6_addr in6addr_loopback; /* ::1 */ |
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| 205 | #define IN6ADDR_ANY_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } } |
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| 206 | #define IN6ADDR_LOOPBACK_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } } |
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| 207 | |
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| 208 | #define INET_ADDRSTRLEN 16 |
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| 209 | #define INET6_ADDRSTRLEN 46 |
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| 210 | |
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| 211 | /* Get the definition of the macro to define the common sockaddr members. */ |
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| 212 | #include <bits/socket.h> |
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| 213 | |
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| 214 | |
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| 215 | /* Structure describing an Internet socket address. */ |
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| 216 | struct sockaddr_in |
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| 217 | { |
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| 218 | __SOCKADDR_COMMON (sin_); |
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| 219 | in_port_t sin_port; /* Port number. */ |
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| 220 | struct in_addr sin_addr; /* Internet address. */ |
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| 221 | |
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| 222 | /* Pad to size of `struct sockaddr'. */ |
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| 223 | unsigned char sin_zero[sizeof (struct sockaddr) - |
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| 224 | __SOCKADDR_COMMON_SIZE - |
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| 225 | sizeof (in_port_t) - |
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| 226 | sizeof (struct in_addr)]; |
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| 227 | }; |
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| 228 | |
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| 229 | /* Ditto, for IPv6. */ |
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| 230 | struct sockaddr_in6 |
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| 231 | { |
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| 232 | __SOCKADDR_COMMON (sin6_); |
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| 233 | in_port_t sin6_port; /* Transport layer port # */ |
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| 234 | uint32_t sin6_flowinfo; /* IPv6 flow information */ |
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| 235 | struct in6_addr sin6_addr; /* IPv6 address */ |
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| 236 | uint32_t sin6_scope_id; /* IPv6 scope-id */ |
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| 237 | }; |
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| 238 | |
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| 239 | /* IPv6 multicast request. */ |
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| 240 | struct ipv6_mreq |
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| 241 | { |
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| 242 | /* IPv6 multicast address of group */ |
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| 243 | struct in6_addr ipv6mr_multiaddr; |
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| 244 | |
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| 245 | /* local interface */ |
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| 246 | unsigned int ipv6mr_interface; |
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| 247 | }; |
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| 248 | |
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| 249 | /* Get system-specific definitions. */ |
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| 250 | #include <bits/in.h> |
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| 251 | |
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| 252 | /* Functions to convert between host and network byte order. |
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| 253 | |
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| 254 | Please note that these functions normally take `unsigned long int' or |
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| 255 | `unsigned short int' values as arguments and also return them. But |
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| 256 | this was a short-sighted decision since on different systems the types |
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| 257 | may have different representations but the values are always the same. */ |
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| 258 | |
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| 259 | extern uint32_t ntohl (uint32_t __netlong) __THROW __attribute__ ((__const__)); |
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| 260 | extern uint16_t ntohs (uint16_t __netshort) |
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| 261 | __THROW __attribute__ ((__const__)); |
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| 262 | extern uint32_t htonl (uint32_t __hostlong) |
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| 263 | __THROW __attribute__ ((__const__)); |
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| 264 | extern uint16_t htons (uint16_t __hostshort) |
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| 265 | __THROW __attribute__ ((__const__)); |
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| 266 | |
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| 267 | #include <endian.h> |
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| 268 | |
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| 269 | /* Get machine dependent optimized versions of byte swapping functions. */ |
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| 270 | #include <bits/byteswap.h> |
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| 271 | |
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| 272 | #ifndef __OPTIMIZE__ |
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| 273 | #define __OPTIMIZE__ |
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| 274 | #endif |
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| 275 | #ifdef __OPTIMIZE__ |
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| 276 | /* We can optimize calls to the conversion functions. Either nothing has |
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| 277 | to be done or we are using directly the byte-swapping functions which |
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| 278 | often can be inlined. */ |
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| 279 | # if __BYTE_ORDER == __BIG_ENDIAN |
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| 280 | /* The host byte order is the same as network byte order, |
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| 281 | so these functions are all just identity. */ |
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| 282 | # define ntohl(x) (x) |
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| 283 | # define ntohs(x) (x) |
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| 284 | # define htonl(x) (x) |
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| 285 | # define htons(x) (x) |
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| 286 | # else |
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| 287 | # if __BYTE_ORDER == __LITTLE_ENDIAN |
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| 288 | # define ntohl(x) __bswap_32 (x) |
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| 289 | # define ntohs(x) __bswap_16 (x) |
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| 290 | # define htonl(x) __bswap_32 (x) |
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| 291 | # define htons(x) __bswap_16 (x) |
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| 292 | # endif |
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| 293 | # endif |
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| 294 | #endif |
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| 295 | |
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| 296 | #define IN6_IS_ADDR_UNSPECIFIED(a) \ |
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| 297 | (((__const uint32_t *) (a))[0] == 0 \ |
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| 298 | && ((__const uint32_t *) (a))[1] == 0 \ |
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| 299 | && ((__const uint32_t *) (a))[2] == 0 \ |
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| 300 | && ((__const uint32_t *) (a))[3] == 0) |
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| 301 | |
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| 302 | #define IN6_IS_ADDR_LOOPBACK(a) \ |
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| 303 | (((__const uint32_t *) (a))[0] == 0 \ |
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| 304 | && ((__const uint32_t *) (a))[1] == 0 \ |
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| 305 | && ((__const uint32_t *) (a))[2] == 0 \ |
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| 306 | && ((__const uint32_t *) (a))[3] == htonl (1)) |
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| 307 | |
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| 308 | #define IN6_IS_ADDR_MULTICAST(a) (((__const uint8_t *) (a))[0] == 0xff) |
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| 309 | |
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| 310 | #define IN6_IS_ADDR_LINKLOCAL(a) \ |
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| 311 | ((((__const uint32_t *) (a))[0] & htonl (0xffc00000)) \ |
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| 312 | == htonl (0xfe800000)) |
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| 313 | |
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| 314 | #define IN6_IS_ADDR_SITELOCAL(a) \ |
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| 315 | ((((__const uint32_t *) (a))[0] & htonl (0xffc00000)) \ |
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| 316 | == htonl (0xfec00000)) |
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| 317 | |
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| 318 | #define IN6_IS_ADDR_V4MAPPED(a) \ |
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| 319 | ((((__const uint32_t *) (a))[0] == 0) \ |
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| 320 | && (((__const uint32_t *) (a))[1] == 0) \ |
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| 321 | && (((__const uint32_t *) (a))[2] == htonl (0xffff))) |
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| 322 | |
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| 323 | #define IN6_IS_ADDR_V4COMPAT(a) \ |
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| 324 | ((((__const uint32_t *) (a))[0] == 0) \ |
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| 325 | && (((__const uint32_t *) (a))[1] == 0) \ |
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| 326 | && (((__const uint32_t *) (a))[2] == 0) \ |
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| 327 | && (ntohl (((__const uint32_t *) (a))[3]) > 1)) |
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| 328 | |
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| 329 | #define IN6_ARE_ADDR_EQUAL(a,b) \ |
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| 330 | ((((__const uint32_t *) (a))[0] == ((__const uint32_t *) (b))[0]) \ |
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| 331 | && (((__const uint32_t *) (a))[1] == ((__const uint32_t *) (b))[1]) \ |
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| 332 | && (((__const uint32_t *) (a))[2] == ((__const uint32_t *) (b))[2]) \ |
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| 333 | && (((__const uint32_t *) (a))[3] == ((__const uint32_t *) (b))[3])) |
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| 334 | |
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| 335 | /* Bind socket to a privileged IP port. */ |
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| 336 | extern int bindresvport (int __sockfd, struct sockaddr_in *__sock_in) __THROW; |
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| 337 | |
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| 338 | /* The IPv6 version of this function. */ |
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| 339 | extern int bindresvport6 (int __sockfd, struct sockaddr_in6 *__sock_in) |
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| 340 | __THROW; |
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| 341 | |
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| 342 | |
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| 343 | #define IN6_IS_ADDR_MC_NODELOCAL(a) \ |
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| 344 | (IN6_IS_ADDR_MULTICAST(a) \ |
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| 345 | && ((((__const uint8_t *) (a))[1] & 0xf) == 0x1)) |
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| 346 | |
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| 347 | #define IN6_IS_ADDR_MC_LINKLOCAL(a) \ |
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| 348 | (IN6_IS_ADDR_MULTICAST(a) \ |
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| 349 | && ((((__const uint8_t *) (a))[1] & 0xf) == 0x2)) |
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| 350 | |
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| 351 | #define IN6_IS_ADDR_MC_SITELOCAL(a) \ |
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| 352 | (IN6_IS_ADDR_MULTICAST(a) \ |
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| 353 | && ((((__const uint8_t *) (a))[1] & 0xf) == 0x5)) |
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| 354 | |
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| 355 | #define IN6_IS_ADDR_MC_ORGLOCAL(a) \ |
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| 356 | (IN6_IS_ADDR_MULTICAST(a) \ |
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| 357 | && ((((__const uint8_t *) (a))[1] & 0xf) == 0x8)) |
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| 358 | |
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| 359 | #define IN6_IS_ADDR_MC_GLOBAL(a) \ |
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| 360 | (IN6_IS_ADDR_MULTICAST(a) \ |
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| 361 | && ((((__const uint8_t *) (a))[1] & 0xf) == 0xe)) |
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| 362 | |
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| 363 | /* IPv6 packet information. */ |
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| 364 | struct in6_pktinfo |
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| 365 | { |
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| 366 | struct in6_addr ipi6_addr; /* src/dst IPv6 address */ |
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| 367 | unsigned int ipi6_ifindex; /* send/recv interface index */ |
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| 368 | }; |
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| 369 | |
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| 370 | __END_DECLS |
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| 371 | |
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| 372 | #endif /* netinet/in.h */ |
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