linux-old/include/linux/in.h
<<
>>
Prefs
   1/*
   2 * INET         An implementation of the TCP/IP protocol suite for the LINUX
   3 *              operating system.  INET is implemented using the  BSD Socket
   4 *              interface as the means of communication with the user level.
   5 *
   6 *              Definitions of the Internet Protocol.
   7 *
   8 * Version:     @(#)in.h        1.0.1   04/21/93
   9 *
  10 * Authors:     Original taken from the GNU Project <netinet/in.h> file.
  11 *              Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
  12 *
  13 *              This program is free software; you can redistribute it and/or
  14 *              modify it under the terms of the GNU General Public License
  15 *              as published by the Free Software Foundation; either version
  16 *              2 of the License, or (at your option) any later version.
  17 */
  18#ifndef _LINUX_IN_H
  19#define _LINUX_IN_H
  20
  21#include <linux/types.h>
  22#include <linux/socket.h>
  23
  24/* Standard well-defined IP protocols.  */
  25enum {
  26  IPPROTO_IP = 0,               /* Dummy protocol for TCP               */
  27  IPPROTO_ICMP = 1,             /* Internet Control Message Protocol    */
  28  IPPROTO_IGMP = 2,             /* Internet Group Management Protocol   */
  29  IPPROTO_IPIP = 4,             /* IPIP tunnels (older KA9Q tunnels use 94) */
  30  IPPROTO_TCP = 6,              /* Transmission Control Protocol        */
  31  IPPROTO_EGP = 8,              /* Exterior Gateway Protocol            */
  32  IPPROTO_PUP = 12,             /* PUP protocol                         */
  33  IPPROTO_UDP = 17,             /* User Datagram Protocol               */
  34  IPPROTO_IDP = 22,             /* XNS IDP protocol                     */
  35  IPPROTO_RSVP = 46,            /* RSVP protocol                        */
  36  IPPROTO_GRE = 47,             /* Cisco GRE tunnels (rfc 1701,1702)    */
  37
  38  IPPROTO_IPV6   = 41,          /* IPv6-in-IPv4 tunnelling              */
  39
  40  IPPROTO_PIM    = 103,         /* Protocol Independent Multicast       */
  41
  42  IPPROTO_ESP = 50,            /* Encapsulation Security Payload protocol */
  43  IPPROTO_AH = 51,             /* Authentication Header protocol       */
  44  IPPROTO_COMP   = 108,                /* Compression Header protocol */
  45  IPPROTO_SCTP   = 132,         /* Stream Control Transport Protocol    */
  46
  47  IPPROTO_RAW    = 255,         /* Raw IP packets                       */
  48  IPPROTO_MAX
  49};
  50
  51
  52/* Internet address. */
  53struct in_addr {
  54        __u32   s_addr;
  55};
  56
  57#define IP_TOS          1
  58#define IP_TTL          2
  59#define IP_HDRINCL      3
  60#define IP_OPTIONS      4
  61#define IP_ROUTER_ALERT 5
  62#define IP_RECVOPTS     6
  63#define IP_RETOPTS      7
  64#define IP_PKTINFO      8
  65#define IP_PKTOPTIONS   9
  66#define IP_MTU_DISCOVER 10
  67#define IP_RECVERR      11
  68#define IP_RECVTTL      12
  69#define IP_RECVTOS      13
  70#define IP_MTU          14
  71#define IP_FREEBIND     15
  72
  73/* BSD compatibility */
  74#define IP_RECVRETOPTS  IP_RETOPTS
  75
  76/* IP_MTU_DISCOVER values */
  77#define IP_PMTUDISC_DONT                0       /* Never send DF frames */
  78#define IP_PMTUDISC_WANT                1       /* Use per route hints  */
  79#define IP_PMTUDISC_DO                  2       /* Always DF            */
  80
  81#define IP_MULTICAST_IF                 32
  82#define IP_MULTICAST_TTL                33
  83#define IP_MULTICAST_LOOP               34
  84#define IP_ADD_MEMBERSHIP               35
  85#define IP_DROP_MEMBERSHIP              36
  86#define IP_UNBLOCK_SOURCE               37
  87#define IP_BLOCK_SOURCE                 38
  88#define IP_ADD_SOURCE_MEMBERSHIP        39
  89#define IP_DROP_SOURCE_MEMBERSHIP       40
  90#define IP_MSFILTER                     41
  91#define MCAST_JOIN_GROUP                42
  92#define MCAST_BLOCK_SOURCE              43
  93#define MCAST_UNBLOCK_SOURCE            44
  94#define MCAST_LEAVE_GROUP               45
  95#define MCAST_JOIN_SOURCE_GROUP         46
  96#define MCAST_LEAVE_SOURCE_GROUP        47
  97#define MCAST_MSFILTER                  48
  98
  99#define MCAST_EXCLUDE   0
 100#define MCAST_INCLUDE   1
 101
 102/* These need to appear somewhere around here */
 103#define IP_DEFAULT_MULTICAST_TTL        1
 104#define IP_DEFAULT_MULTICAST_LOOP       1
 105
 106/* Request struct for multicast socket ops */
 107
 108struct ip_mreq 
 109{
 110        struct in_addr imr_multiaddr;   /* IP multicast address of group */
 111        struct in_addr imr_interface;   /* local IP address of interface */
 112};
 113
 114struct ip_mreqn
 115{
 116        struct in_addr  imr_multiaddr;          /* IP multicast address of group */
 117        struct in_addr  imr_address;            /* local IP address of interface */
 118        int             imr_ifindex;            /* Interface index */
 119};
 120
 121struct ip_mreq_source {
 122        __u32           imr_multiaddr;
 123        __u32           imr_interface;
 124        __u32           imr_sourceaddr;
 125};
 126
 127struct ip_msfilter {
 128        __u32           imsf_multiaddr;
 129        __u32           imsf_interface;
 130        __u32           imsf_fmode;
 131        __u32           imsf_numsrc;
 132        __u32           imsf_slist[1];
 133};
 134
 135#define IP_MSFILTER_SIZE(numsrc) \
 136        (sizeof(struct ip_msfilter) - sizeof(__u32) \
 137        + (numsrc) * sizeof(__u32))
 138
 139struct group_req
 140{
 141        __u32                            gr_interface;  /* interface index */
 142        struct __kernel_sockaddr_storage gr_group;      /* group address */
 143};
 144
 145struct group_source_req
 146{
 147        __u32                            gsr_interface; /* interface index */
 148        struct __kernel_sockaddr_storage gsr_group;     /* group address */
 149        struct __kernel_sockaddr_storage gsr_source;    /* source address */
 150};
 151
 152struct group_filter
 153{
 154        __u32                            gf_interface;  /* interface index */
 155        struct __kernel_sockaddr_storage gf_group;      /* multicast address */
 156        __u32                            gf_fmode;      /* filter mode */
 157        __u32                            gf_numsrc;     /* number of sources */
 158        struct __kernel_sockaddr_storage gf_slist[1];   /* interface index */
 159};
 160
 161#define GROUP_FILTER_SIZE(numsrc) \
 162        (sizeof(struct group_filter) - sizeof(struct __kernel_sockaddr_storage) \
 163        + (numsrc) * sizeof(struct __kernel_sockaddr_storage))
 164
 165struct in_pktinfo
 166{
 167        int             ipi_ifindex;
 168        struct in_addr  ipi_spec_dst;
 169        struct in_addr  ipi_addr;
 170};
 171
 172/* Structure describing an Internet (IP) socket address. */
 173#define __SOCK_SIZE__   16              /* sizeof(struct sockaddr)      */
 174struct sockaddr_in {
 175  sa_family_t           sin_family;     /* Address family               */
 176  unsigned short int    sin_port;       /* Port number                  */
 177  struct in_addr        sin_addr;       /* Internet address             */
 178
 179  /* Pad to size of `struct sockaddr'. */
 180  unsigned char         __pad[__SOCK_SIZE__ - sizeof(short int) -
 181                        sizeof(unsigned short int) - sizeof(struct in_addr)];
 182};
 183#define sin_zero        __pad           /* for BSD UNIX comp. -FvK      */
 184
 185
 186/*
 187 * Definitions of the bits in an Internet address integer.
 188 * On subnets, host and network parts are found according
 189 * to the subnet mask, not these masks.
 190 */
 191#define IN_CLASSA(a)            ((((long int) (a)) & 0x80000000) == 0)
 192#define IN_CLASSA_NET           0xff000000
 193#define IN_CLASSA_NSHIFT        24
 194#define IN_CLASSA_HOST          (0xffffffff & ~IN_CLASSA_NET)
 195#define IN_CLASSA_MAX           128
 196
 197#define IN_CLASSB(a)            ((((long int) (a)) & 0xc0000000) == 0x80000000)
 198#define IN_CLASSB_NET           0xffff0000
 199#define IN_CLASSB_NSHIFT        16
 200#define IN_CLASSB_HOST          (0xffffffff & ~IN_CLASSB_NET)
 201#define IN_CLASSB_MAX           65536
 202
 203#define IN_CLASSC(a)            ((((long int) (a)) & 0xe0000000) == 0xc0000000)
 204#define IN_CLASSC_NET           0xffffff00
 205#define IN_CLASSC_NSHIFT        8
 206#define IN_CLASSC_HOST          (0xffffffff & ~IN_CLASSC_NET)
 207
 208#define IN_CLASSD(a)            ((((long int) (a)) & 0xf0000000) == 0xe0000000)
 209#define IN_MULTICAST(a)         IN_CLASSD(a)
 210#define IN_MULTICAST_NET        0xF0000000
 211
 212#define IN_EXPERIMENTAL(a)      ((((long int) (a)) & 0xf0000000) == 0xf0000000)
 213#define IN_BADCLASS(a)          IN_EXPERIMENTAL((a))
 214
 215/* Address to accept any incoming messages. */
 216#define INADDR_ANY              ((unsigned long int) 0x00000000)
 217
 218/* Address to send to all hosts. */
 219#define INADDR_BROADCAST        ((unsigned long int) 0xffffffff)
 220
 221/* Address indicating an error return. */
 222#define INADDR_NONE             ((unsigned long int) 0xffffffff)
 223
 224/* Network number for local host loopback. */
 225#define IN_LOOPBACKNET          127
 226
 227/* Address to loopback in software to local host.  */
 228#define INADDR_LOOPBACK         0x7f000001      /* 127.0.0.1   */
 229#define IN_LOOPBACK(a)          ((((long int) (a)) & 0xff000000) == 0x7f000000)
 230
 231/* Defines for Multicast INADDR */
 232#define INADDR_UNSPEC_GROUP     0xe0000000U     /* 224.0.0.0   */
 233#define INADDR_ALLHOSTS_GROUP   0xe0000001U     /* 224.0.0.1   */
 234#define INADDR_ALLRTRS_GROUP    0xe0000002U     /* 224.0.0.2 */
 235#define INADDR_MAX_LOCAL_GROUP  0xe00000ffU     /* 224.0.0.255 */
 236
 237
 238/* <asm/byteorder.h> contains the htonl type stuff.. */
 239#include <asm/byteorder.h> 
 240
 241#ifdef __KERNEL__
 242/* Some random defines to make it easier in the kernel.. */
 243#define LOOPBACK(x)     (((x) & htonl(0xff000000)) == htonl(0x7f000000))
 244#define MULTICAST(x)    (((x) & htonl(0xf0000000)) == htonl(0xe0000000))
 245#define BADCLASS(x)     (((x) & htonl(0xf0000000)) == htonl(0xf0000000))
 246#define ZERONET(x)      (((x) & htonl(0xff000000)) == htonl(0x00000000))
 247#define LOCAL_MCAST(x)  (((x) & htonl(0xFFFFFF00)) == htonl(0xE0000000))
 248
 249#endif
 250
 251#endif  /* _LINUX_IN_H */
 252
lxr.linux.no kindly hosted by Redpill Linpro AS, provider of Linux consulting and operations services since 1995.