1: /* Copyright (C) 1997, 2000, 2004, 2007 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: /* Generic 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      1    /* ip_opts; IP per-packet options.  */
   29: #define IP_HDRINCL      2    /* int; Header is included with data.  */
   30: #define IP_TOS          3       /* int; IP type of service and precedence.  */
   31: #define IP_TTL          4       /* int; IP time to live.  */
   32: #define IP_RECVOPTS     5   /* bool; Receive all IP options w/datagram.  */
   33: #define IP_RECVRETOPTS  6        /* bool; Receive IP options for response.  */
   34: #define IP_RECVDSTADDR  7        /* bool; Receive IP dst addr w/datagram.  */
   35: #define IP_RETOPTS      8    /* ip_opts; Set/get IP per-packet options.  */
   36: #define IP_MULTICAST_IF 9       /* in_addr; set/get IP multicast i/f */
   37: #define IP_MULTICAST_TTL 10     /* u_char; set/get IP multicast ttl */
   38: #define IP_MULTICAST_LOOP 11    /* i_char; set/get IP multicast loopback */
   39: #define IP_ADD_MEMBERSHIP 12    /* ip_mreq; add an IP group membership */
   40: #define IP_DROP_MEMBERSHIP 13   /* ip_mreq; drop an IP group membership */
   41: 
   42: /* Structure used to describe IP options for IP_OPTIONS and IP_RETOPTS.
   43:    The `ip_dst' field is used for the first-hop gateway when using a
   44:    source route (this gets put into the header proper).  */
   45: struct ip_opts
   46:   {
   47:     struct in_addr ip_dst;      /* First hop; zero without source route.  */
   48:     char ip_opts[40];           /* Actually variable in size.  */
   49:   };
   50: 
   51: /* IPV6 socket options.  */
   52: #define IPV6_ADDRFORM           1
   53: #define IPV6_RXINFO             2
   54: #define IPV6_HOPOPTS            3
   55: #define IPV6_DSTOPTS            4
   56: #define IPV6_RTHDR              5
   57: #define IPV6_PKTOPTIONS         6
   58: #define IPV6_CHECKSUM           7
   59: #define IPV6_HOPLIMIT           8
   60: 
   61: #define IPV6_TXINFO             IPV6_RXINFO
   62: #define SCM_SRCINFO             IPV6_TXINFO
   63: #define SCM_SRCRT               IPV6_RXSRCRT
   64: 
   65: #define IPV6_UNICAST_HOPS       16
   66: #define IPV6_MULTICAST_IF       17
   67: #define IPV6_MULTICAST_HOPS     18
   68: #define IPV6_MULTICAST_LOOP     19
   69: #define IPV6_JOIN_GROUP         20
   70: #define IPV6_LEAVE_GROUP        21
   71: #define IPV6_ROUTER_ALERT      22
   72: #define IPV6_MTU_DISCOVER      23
   73: #define IPV6_MTU               24
   74: #define IPV6_RECVERR           25
   75: #define IPV6_V6ONLY            26
   76: #define IPV6_JOIN_ANYCAST      27
   77: #define IPV6_LEAVE_ANYCAST     28
   78: 
   79: /* Obsolete synonyms for the above.  */
   80: #define IPV6_ADD_MEMBERSHIP     IPV6_JOIN_GROUP
   81: #define IPV6_DROP_MEMBERSHIP    IPV6_LEAVE_GROUP
   82: #define IPV6_RXHOPOPTS          IPV6_HOPOPTS
   83: #define IPV6_RXDSTOPTS          IPV6_DSTOPTS
   84: 
   85: /* Routing header options for IPv6.  */
   86: #define IPV6_RTHDR_LOOSE        0      /* Hop doesn't need to be neighbour. */
   87: #define IPV6_RTHDR_STRICT       1     /* Hop must be a neighbour.  */
   88: 
   89: #define IPV6_RTHDR_TYPE_0       0     /* IPv6 Routing header type 0.  */