sysdeps/unix/sysv/linux/bits/in.h

   1 /* Copyright (C) 1991-1999, 2000, 2004, 2008 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 /* Linux version.  */
  20
  21 #ifndef _NETINET_IN_H
  22 # error "Never use <bits/in.h> directly; include <netinet/in.h> instead."
  23 #endif
  24
  25 /* Options for use with `getsockopt' and `setsockopt' at the IP level.
  26    The first word in the comment at the right is the data type used;
  27    "bool" means a boolean value stored in an `int'.  */
  28 #define        IP_OPTIONS      4       /* ip_opts; IP per-packet options.  */
  29 #define        IP_HDRINCL      3       /* int; Header is included with data.  */
  30 #define        IP_TOS          1       /* int; IP type of service and precedence.  */
  31 #define        IP_TTL          2       /* int; IP time to live.  */
  32 #define        IP_RECVOPTS     6       /* bool; Receive all IP options w/datagram.  */
  33 /* For BSD compatibility.  */
  34 #define        IP_RECVRETOPTS  IP_RETOPTS       /* bool; Receive IP options for response.  */
  35 #define        IP_RETOPTS      7       /* ip_opts; Set/get IP per-packet options.  */
  36 #define IP_MULTICAST_IF 32      /* in_addr; set/get IP multicast i/f */
  37 #define IP_MULTICAST_TTL 33     /* u_char; set/get IP multicast ttl */
  38 #define IP_MULTICAST_LOOP 34    /* i_char; set/get IP multicast loopback */
  39 #define IP_ADD_MEMBERSHIP 35    /* ip_mreq; add an IP group membership */
  40 #define IP_DROP_MEMBERSHIP 36   /* ip_mreq; drop an IP group membership */
  41 #define IP_UNBLOCK_SOURCE 37    /* ip_mreq_source: unblock data from source */
  42 #define IP_BLOCK_SOURCE 38      /* ip_mreq_source: block data from source */
  43 #define IP_ADD_SOURCE_MEMBERSHIP 39 /* ip_mreq_source: join source group */
  44 #define IP_DROP_SOURCE_MEMBERSHIP 40 /* ip_mreq_source: leave source group */
  45 #define IP_MSFILTER 41
  46 #if defined __USE_MISC || defined __USE_GNU
  47 # define MCAST_JOIN_GROUP 42    /* group_req: join any-source group */
  48 # define MCAST_BLOCK_SOURCE 43  /* group_source_req: block from given group */
  49 # define MCAST_UNBLOCK_SOURCE 44 /* group_source_req: unblock from given group*/
  50 # define MCAST_LEAVE_GROUP 45   /* group_req: leave any-source group */
  51 # define MCAST_JOIN_SOURCE_GROUP 46 /* group_source_req: join source-spec gr */
  52 # define MCAST_LEAVE_SOURCE_GROUP 47 /* group_source_req: leave source-spec gr*/
  53 # define MCAST_MSFILTER 48
  54
  55 # define MCAST_EXCLUDE   0
  56 # define MCAST_INCLUDE   1
  57 #endif
  58
  59 #define IP_ROUTER_ALERT    5    /* bool */
  60 #define IP_PKTINFO         8    /* bool */
  61 #define IP_PKTOPTIONS      9
  62 #define IP_PMTUDISC        10   /* obsolete name? */
  63 #define IP_MTU_DISCOVER    10   /* int; see below */
  64 #define IP_RECVERR         11   /* bool */
  65 #define IP_RECVTTL         12   /* bool */
  66 #define IP_RECVTOS         13   /* bool */
  67
  68
  69 /* IP_MTU_DISCOVER arguments.  */
  70 #define IP_PMTUDISC_DONT   0    /* Never send DF frames.  */
  71 #define IP_PMTUDISC_WANT   1    /* Use per route hints.  */
  72 #define IP_PMTUDISC_DO     2    /* Always DF.  */
  73 #define IP_PMTUDISC_PROBE  3    /* Ignore dst pmtu.  */
  74
  75 /* To select the IP level.  */
  76 #define SOL_IP  0
  77
  78 #define IP_DEFAULT_MULTICAST_TTL        1
  79 #define IP_DEFAULT_MULTICAST_LOOP       1
  80 #define IP_MAX_MEMBERSHIPS              20
  81
  82 #if defined __USE_MISC || defined __USE_GNU
  83 /* Structure used to describe IP options for IP_OPTIONS and IP_RETOPTS.
  84    The `ip_dst' field is used for the first-hop gateway when using a
  85    source route (this gets put into the header proper).  */
  86 struct ip_opts
  87   {
  88     struct in_addr ip_dst;      /* First hop; zero without source route.  */
  89     char ip_opts[40];           /* Actually variable in size.  */
  90   };
  91
  92 /* Like `struct ip_mreq' but including interface specification by index.  */
  93 struct ip_mreqn
  94   {
  95     struct in_addr imr_multiaddr;       /* IP multicast address of group */
  96     struct in_addr imr_address;         /* local IP address of interface */
  97     int imr_ifindex;                    /* Interface index */
  98   };
  99
 100 /* Structure used for IP_PKTINFO.  */
 101 struct in_pktinfo
 102   {
 103     int ipi_ifindex;                    /* Interface index  */
 104     struct in_addr ipi_spec_dst;        /* Routing destination address  */
 105     struct in_addr ipi_addr;            /* Header destination address  */
 106   };
 107 #endif
 108
 109 /* Options for use with `getsockopt' and `setsockopt' at the IPv6 level.
 110    The first word in the comment at the right is the data type used;
 111    "bool" means a boolean value stored in an `int'.  */
 112 #define IPV6_ADDRFORM           1
 113 #define IPV6_2292PKTINFO        2
 114 #define IPV6_2292HOPOPTS        3
 115 #define IPV6_2292DSTOPTS        4
 116 #define IPV6_2292RTHDR          5
 117 #define IPV6_2292PKTOPTIONS     6
 118 #define IPV6_CHECKSUM           7
 119 #define IPV6_2292HOPLIMIT       8
 120
 121 #define SCM_SRCRT               IPV6_RXSRCRT
 122
 123 #define IPV6_NEXTHOP            9
 124 #define IPV6_AUTHHDR            10
 125 #define IPV6_UNICAST_HOPS       16
 126 #define IPV6_MULTICAST_IF       17
 127 #define IPV6_MULTICAST_HOPS     18
 128 #define IPV6_MULTICAST_LOOP     19
 129 #define IPV6_JOIN_GROUP         20
 130 #define IPV6_LEAVE_GROUP        21
 131 #define IPV6_ROUTER_ALERT       22
 132 #define IPV6_MTU_DISCOVER       23
 133 #define IPV6_MTU                24
 134 #define IPV6_RECVERR            25
 135 #define IPV6_V6ONLY             26
 136 #define IPV6_JOIN_ANYCAST       27
 137 #define IPV6_LEAVE_ANYCAST      28
 138 #define IPV6_IPSEC_POLICY       34
 139 #define IPV6_XFRM_POLICY        35
 140
 141 #define IPV6_RECVPKTINFO        49
 142 #define IPV6_PKTINFO            50
 143 #define IPV6_RECVHOPLIMIT       51
 144 #define IPV6_HOPLIMIT           52
 145 #define IPV6_RECVHOPOPTS        53
 146 #define IPV6_HOPOPTS            54
 147 #define IPV6_RTHDRDSTOPTS       55
 148 #define IPV6_RECVRTHDR          56
 149 #define IPV6_RTHDR              57
 150 #define IPV6_RECVDSTOPTS        58
 151 #define IPV6_DSTOPTS            59
 152
 153 #define IPV6_RECVTCLASS         66
 154 #define IPV6_TCLASS             67
 155
 156 /* Obsolete synonyms for the above.  */
 157 #define IPV6_ADD_MEMBERSHIP     IPV6_JOIN_GROUP
 158 #define IPV6_DROP_MEMBERSHIP    IPV6_LEAVE_GROUP
 159 #define IPV6_RXHOPOPTS          IPV6_HOPOPTS
 160 #define IPV6_RXDSTOPTS          IPV6_DSTOPTS
 161
 162 /* IPV6_MTU_DISCOVER values.  */
 163 #define IPV6_PMTUDISC_DONT      0       /* Never send DF frames.  */
 164 #define IPV6_PMTUDISC_WANT      1       /* Use per route hints.  */
 165 #define IPV6_PMTUDISC_DO        2       /* Always DF.  */
 166 #define IPV6_PMTUDISC_PROBE     3       /* Ignore dst pmtu.  */
 167
 168 /* Socket level values for IPv6.  */
 169 #define SOL_IPV6        41
 170 #define SOL_ICMPV6      58
 171
 172 /* Routing header options for IPv6.  */
 173 #define IPV6_RTHDR_LOOSE        0       /* Hop doesn't need to be neighbour. */
 174 #define IPV6_RTHDR_STRICT       1       /* Hop must be a neighbour.  */
 175
 176 #define IPV6_RTHDR_TYPE_0       0       /* IPv6 Routing header type 0.  */