source: svn/trunk/newcon3bcm2_21bu/toolchain/mips-linux-uclibc/include/bits/in.h

/* Copyright (C) 1991-1999, 2000 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

/* Linux version.  */

#ifndef _NETINET_IN_H
# error "Never use <bits/in.h> directly; include <netinet/in.h> instead."
#endif

/* Options for use with `getsockopt' and `setsockopt' at the IP level.
   The first word in the comment at the right is the data type used;
   "bool" means a boolean value stored in an `int'.  */
#define IP_TOS             1    /* int; IP type of service and precedence.  */
#define IP_TTL             2    /* int; IP time to live.  */
#define IP_HDRINCL         3    /* int; Header is included with data.  */
#define IP_OPTIONS         4    /* ip_opts; IP per-packet options.  */
#define IP_ROUTER_ALERT    5    /* bool */
#define IP_RECVOPTS        6    /* bool */
#define IP_RETOPTS         7    /* bool */
#define IP_PKTINFO         8    /* bool */
#define IP_PKTOPTIONS      9
#define IP_PMTUDISC        10   /* obsolete name? */
#define IP_MTU_DISCOVER    10   /* int; see below */
#define IP_RECVERR         11   /* bool */
#define IP_RECVTTL         12   /* bool */
#define IP_RECVTOS         13   /* bool */
#define IP_MULTICAST_IF    32   /* in_addr; set/get IP multicast i/f */
#define IP_MULTICAST_TTL   33   /* u_char; set/get IP multicast ttl */
#define IP_MULTICAST_LOOP  34   /* i_char; set/get IP multicast loopback */
#define IP_ADD_MEMBERSHIP  35   /* ip_mreq; add an IP group membership */
#define IP_DROP_MEMBERSHIP 36   /* ip_mreq; drop an IP group membership */

/* For BSD compatibility.  */
#define IP_RECVRETOPTS  IP_RETOPTS

/* IP_MTU_DISCOVER arguments.  */
#define IP_PMTUDISC_DONT   0    /* Never send DF frames.  */
#define IP_PMTUDISC_WANT   1    /* Use per route hints.  */
#define IP_PMTUDISC_DO     2    /* Always DF.  */

/* To select the IP level.  */
#define SOL_IP  0

#define IP_DEFAULT_MULTICAST_TTL        1
#define IP_DEFAULT_MULTICAST_LOOP       1
#define IP_MAX_MEMBERSHIPS              20

/* Structure used to describe IP options for IP_OPTIONS. The `ip_dst'
   field is used for the first-hop gateway when using a source route
   (this gets put into the header proper).  */
struct ip_opts
  {
    struct in_addr ip_dst;      /* First hop; zero without source route.  */
    char ip_opts[40];           /* Actually variable in size.  */
  };

/* Structure used for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP. */
struct ip_mreq
  {
    struct in_addr imr_multiaddr;       /* IP multicast address of group */
    struct in_addr imr_interface;       /* local IP address of interface */
  };

/* As above but including interface specification by index.  */
struct ip_mreqn
  {
    struct in_addr imr_multiaddr;       /* IP multicast address of group */
    struct in_addr imr_address;         /* local IP address of interface */
    int imr_ifindex;                    /* Interface index */
  };

/* Structure used for IP_PKTINFO.  */
struct in_pktinfo
  {
    int ipi_ifindex;                    /* Interface index  */
    struct in_addr ipi_spec_dst;        /* Routing destination address  */
    struct in_addr ipi_addr;            /* Header destination address  */
  };

/* Options for use with `getsockopt' and `setsockopt' at the IPv6 level.
   The first word in the comment at the right is the data type used;
   "bool" means a boolean value stored in an `int'.  */
#define IPV6_ADDRFORM           1
#define IPV6_PKTINFO            2
#define IPV6_HOPOPTS            3
#define IPV6_DSTOPTS            4
#define IPV6_RTHDR              5
#define IPV6_PKTOPTIONS         6
#define IPV6_CHECKSUM           7
#define IPV6_HOPLIMIT           8
#define IPV6_NEXTHOP            9
#define IPV6_AUTHHDR            10
#define IPV6_UNICAST_HOPS       16
#define IPV6_MULTICAST_IF       17
#define IPV6_MULTICAST_HOPS     18
#define IPV6_MULTICAST_LOOP     19
#define IPV6_JOIN_GROUP         20
#define IPV6_LEAVE_GROUP        21
#define IPV6_ROUTER_ALERT       22
#define IPV6_MTU_DISCOVER       23
#define IPV6_MTU                24
#define IPV6_RECVERR            25

#define SCM_SRCRT               IPV6_RXSRCRT

/* Obsolete synonyms for the above.  */
#define IPV6_RXHOPOPTS          IPV6_HOPOPTS
#define IPV6_RXDSTOPTS          IPV6_DSTOPTS
#define IPV6_ADD_MEMBERSHIP     IPV6_JOIN_GROUP
#define IPV6_DROP_MEMBERSHIP    IPV6_LEAVE_GROUP


/* IPV6_MTU_DISCOVER values.  */
#define IPV6_PMTUDISC_DONT      0       /* Never send DF frames.  */
#define IPV6_PMTUDISC_WANT      1       /* Use per route hints.  */
#define IPV6_PMTUDISC_DO        2       /* Always DF.  */

/* Socket level values for IPv6.  */
#define SOL_IPV6        41
#define SOL_ICMPV6      58

/* Routing header options for IPv6.  */
#define IPV6_RTHDR_LOOSE        0       /* Hop doesn't need to be neighbour. */
#define IPV6_RTHDR_STRICT       1       /* Hop must be a neighbour.  */

#define IPV6_RTHDR_TYPE_0       0       /* IPv6 Routing header type 0.  */