headers/posix/netinet/in.h

   1 /*
   2  * Copyright 2002-2012 Haiku, Inc. All Rights Reserved.
   3  * Distributed under the terms of the MIT License.
   4  */
   5 #ifndef _NETINET_IN_H_
   6 #define _NETINET_IN_H_
   7
   8
   9 #include <net/if.h>
  10 #include <endian.h>
  11 #include <stdint.h>
  12 #include <sys/types.h>
  13
  14 /* RFC 2553 states that these must be available through <netinet/in.h> */
  15 #include <netinet6/in6.h>
  16
  17
  18 #ifdef __cplusplus
  19 extern "C" {
  20 #endif
  21
  22 typedef uint16_t in_port_t;
  23 typedef uint32_t in_addr_t;
  24
  25 /* We can't include <ByteOrder.h> since we are a posix file,
  26  * and we are not allowed to import all the BeOS types here.
  27  */
  28 #ifndef htonl
  29 #       ifdef __HAIKU_BEOS_COMPATIBLE_TYPES
  30                 extern unsigned long __swap_int32(unsigned long);       /* private */
  31 #       else
  32                 extern unsigned int __swap_int32(unsigned int); /* private */
  33 #       endif
  34         extern uint16_t __swap_int16(uint16_t); /* private */
  35 #       if BYTE_ORDER == LITTLE_ENDIAN
  36 #               define htonl(x) ((uint32_t)__swap_int32(x))
  37 #               define ntohl(x) ((uint32_t)__swap_int32(x))
  38 #               define htons(x) __swap_int16(x)
  39 #               define ntohs(x) __swap_int16(x)
  40 #       elif BYTE_ORDER == BIG_ENDIAN
  41 #               define htonl(x) (x)
  42 #               define ntohl(x) (x)
  43 #               define htons(x) (x)
  44 #               define ntohs(x) (x)
  45 #       else
  46 #               error Unknown byte order.
  47 #       endif
  48 #endif
  49
  50
  51 /* Protocol definitions */
  52 #define IPPROTO_IP                              0       /* 0, IPv4 */
  53 #define IPPROTO_HOPOPTS                 0       /* 0, IPv6 hop-by-hop options */
  54 #define IPPROTO_ICMP                    1       /* 1, ICMP (v4) */
  55 #define IPPROTO_IGMP                    2       /* 2, IGMP (group management) */
  56 #define IPPROTO_TCP                             6       /* 6, tcp */
  57 #define IPPROTO_UDP                             17      /* 17, UDP */
  58 #define IPPROTO_IPV6                    41      /* 41, IPv6 in IPv6 */
  59 #define IPPROTO_ROUTING                 43      /* 43, Routing */
  60 #define IPPROTO_FRAGMENT                44      /* 44, IPv6 fragmentation header */
  61 #define IPPROTO_ESP                             50      /* 50, Encap Sec. Payload */
  62 #define IPPROTO_AH                              51      /* 51, Auth Header */
  63 #define IPPROTO_ICMPV6                  58      /* 58, IPv6 ICMP */
  64 #define IPPROTO_NONE                    59      /* 59, IPv6 no next header */
  65 #define IPPROTO_DSTOPTS                 60      /* 60, IPv6 destination option */
  66 #define IPPROTO_ETHERIP                 97      /* 97, Ethernet in IPv4 */
  67 #define IPPROTO_RAW                             255     /* 255 */
  68
  69 #define IPPROTO_MAX                             256
  70
  71
  72 /* Port numbers */
  73
  74 #define IPPORT_RESERVED                 1024
  75         /* < IPPORT_RESERVED are privileged and should be accessible only by root */
  76 #define IPPORT_USERRESERVED             49151
  77         /* > IPPORT_USERRESERVED are reserved for servers, though not requiring
  78          * privileged status
  79          */
  80
  81 /* IP Version 4 address */
  82 struct in_addr {
  83         in_addr_t s_addr;
  84 };
  85
  86 /* IP Version 4 socket address */
  87 struct sockaddr_in {
  88         uint8_t         sin_len;
  89         uint8_t         sin_family;
  90         uint16_t        sin_port;
  91         struct in_addr  sin_addr;
  92         int8_t          sin_zero[24];
  93 };
  94
  95
  96 /* RFC 3678 - Socket Interface Extensions for Multicast Source Filters */
  97
  98 struct ip_mreq {
  99         struct in_addr imr_multiaddr; /* IP address of group */
 100         struct in_addr imr_interface; /* IP address of interface */
 101 };
 102
 103 struct ip_mreq_source {
 104         struct in_addr imr_multiaddr;   /* IP address of group */
 105         struct in_addr imr_sourceaddr;  /* IP address of source */
 106         struct in_addr imr_interface;   /* IP address of interface */
 107 };
 108
 109 struct group_req {
 110         uint32_t                gr_interface; /* interface index */
 111         struct sockaddr_storage gr_group;     /* group address */
 112 };
 113
 114 struct group_source_req {
 115         uint32_t                gsr_interface; /* interface index */
 116         struct sockaddr_storage gsr_group;     /* group address */
 117         struct sockaddr_storage gsr_source;    /* source address */
 118 };
 119
 120 /*
 121  * Options for use with [gs]etsockopt at the IP level.
 122  * First word of comment is data type; bool is stored in int.
 123  */
 124 #define IP_OPTIONS                                      1       /* buf/ip_opts; set/get IP options */
 125 #define IP_HDRINCL                                      2       /* int; header is included with data */
 126 #define IP_TOS                                          3
 127         /* int; IP type of service and preced. */
 128 #define IP_TTL                                          4       /* int; IP time to live */
 129 #define IP_RECVOPTS                                     5       /* bool; receive all IP opts w/dgram */
 130 #define IP_RECVRETOPTS                          6       /* bool; receive IP opts for response */
 131 #define IP_RECVDSTADDR                          7       /* bool; receive IP dst addr w/dgram */
 132 #define IP_RETOPTS                                      8       /* ip_opts; set/get IP options */
 133 #define IP_MULTICAST_IF                         9       /* in_addr; set/get IP multicast i/f  */
 134 #define IP_MULTICAST_TTL                        10      /* u_char; set/get IP multicast ttl */
 135 #define IP_MULTICAST_LOOP                       11
 136         /* u_char; set/get IP multicast loopback */
 137 #define IP_ADD_MEMBERSHIP                       12
 138         /* ip_mreq; add an IP group membership */
 139 #define IP_DROP_MEMBERSHIP                      13
 140         /* ip_mreq; drop an IP group membership */
 141 #define IP_BLOCK_SOURCE                         14      /* ip_mreq_source */
 142 #define IP_UNBLOCK_SOURCE                       15      /* ip_mreq_source */
 143 #define IP_ADD_SOURCE_MEMBERSHIP        16      /* ip_mreq_source */
 144 #define IP_DROP_SOURCE_MEMBERSHIP       17      /* ip_mreq_source */
 145 #define MCAST_JOIN_GROUP                        18      /* group_req */
 146 #define MCAST_BLOCK_SOURCE                      19      /* group_source_req */
 147 #define MCAST_UNBLOCK_SOURCE            20      /* group_source_req */
 148 #define MCAST_LEAVE_GROUP                       21      /* group_req */
 149 #define MCAST_JOIN_SOURCE_GROUP         22      /* group_source_req */
 150 #define MCAST_LEAVE_SOURCE_GROUP        23      /* group_source_req */
 151
 152 /* IPPROTO_IPV6 options */
 153 #define IPV6_MULTICAST_IF                       24      /* int */
 154 #define IPV6_MULTICAST_HOPS                     25      /* int */
 155 #define IPV6_MULTICAST_LOOP                     26      /* int */
 156
 157 #define IPV6_UNICAST_HOPS                       27      /* int */
 158 #define IPV6_JOIN_GROUP                         28      /* struct ipv6_mreq */
 159 #define IPV6_LEAVE_GROUP                        29      /* struct ipv6_mreq */
 160 #define IPV6_V6ONLY                                     30      /* int */
 161
 162 #define IPV6_PKTINFO                            31      /* struct ipv6_pktinfo */
 163 #define IPV6_RECVPKTINFO                        32      /* struct ipv6_pktinfo */
 164 #define IPV6_HOPLIMIT                           33      /* int */
 165 #define IPV6_RECVHOPLIMIT                       34      /* int */
 166
 167 #define IPV6_HOPOPTS                            35  /* struct ip6_hbh */
 168 #define IPV6_DSTOPTS                            36  /* struct ip6_dest */
 169 #define IPV6_RTHDR                                      37  /* struct ip6_rthdr */
 170
 171 #define INADDR_ANY                                      ((in_addr_t)0x00000000)
 172 #define INADDR_LOOPBACK                         ((in_addr_t)0x7f000001)
 173 #define INADDR_BROADCAST                        ((in_addr_t)0xffffffff) /* must be masked */
 174
 175 #define INADDR_UNSPEC_GROUP                     ((in_addr_t)0xe0000000) /* 224.0.0.0 */
 176 #define INADDR_ALLHOSTS_GROUP           ((in_addr_t)0xe0000001) /* 224.0.0.1 */
 177 #define INADDR_ALLROUTERS_GROUP         ((in_addr_t)0xe0000002) /* 224.0.0.2 */
 178 #define INADDR_MAX_LOCAL_GROUP          ((in_addr_t)0xe00000ff) /* 224.0.0.255 */
 179
 180 #define IN_LOOPBACKNET                          127
 181
 182 #define INADDR_NONE                                     ((in_addr_t)0xffffffff)
 183
 184 #define IN_CLASSA(i)                            (((in_addr_t)(i) & 0x80000000) == 0)
 185 #define IN_CLASSA_NET                           0xff000000
 186 #define IN_CLASSA_NSHIFT                        24
 187 #define IN_CLASSA_HOST                          0x00ffffff
 188 #define IN_CLASSA_MAX                           128
 189
 190 #define IN_CLASSB(i)                            (((in_addr_t)(i) & 0xc0000000) == 0x80000000)
 191 #define IN_CLASSB_NET                           0xffff0000
 192 #define IN_CLASSB_NSHIFT                        16
 193 #define IN_CLASSB_HOST                          0x0000ffff
 194 #define IN_CLASSB_MAX                           65536
 195
 196 #define IN_CLASSC(i)                            (((in_addr_t)(i) & 0xe0000000) == 0xc0000000)
 197 #define IN_CLASSC_NET                           0xffffff00
 198 #define IN_CLASSC_NSHIFT                        8
 199 #define IN_CLASSC_HOST                          0x000000ff
 200
 201 #define IN_CLASSD(i)                            (((in_addr_t)(i) & 0xf0000000) == 0xe0000000)
 202 /* These ones aren't really net and host fields, but routing needn't know. */
 203 #define IN_CLASSD_NET                           0xf0000000
 204 #define IN_CLASSD_NSHIFT                        28
 205 #define IN_CLASSD_HOST                          0x0fffffff
 206
 207 #define IN_MULTICAST(i)                         IN_CLASSD(i)
 208
 209 #define IN_EXPERIMENTAL(i)                      (((in_addr_t)(i) & 0xf0000000) == 0xf0000000)
 210 #define IN_BADCLASS(i)                          (((in_addr_t)(i) & 0xf0000000) == 0xf0000000)
 211
 212 #define IP_MAX_MEMBERSHIPS                      20
 213
 214 /* maximal length of the string representation of an IPv4 address */
 215 #define INET_ADDRSTRLEN                         16
 216
 217 /* some helpful macro's :) */
 218 #define in_hosteq(s, t)                         ((s).s_addr == (t).s_addr)
 219 #define in_nullhost(x)                          ((x).s_addr == INADDR_ANY)
 220 #define satosin(sa)                                     ((struct sockaddr_in *)(sa))
 221 #define sintosa(sin)                            ((struct sockaddr *)(sin))
 222
 223 #ifdef __cplusplus
 224 }
 225 #endif
 226
 227 #endif  /* _NETINET_IN_H_ */