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-rw-r--r--libc/sysdeps/linux/common/bits/in.h141
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diff --git a/libc/sysdeps/linux/common/bits/in.h b/libc/sysdeps/linux/common/bits/in.h
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+++ b/libc/sysdeps/linux/common/bits/in.h
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+/* 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. */