1/* Copyright (C) 1991-2015 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, see
16 <http://www.gnu.org/licenses/>. */
17
18/* Linux version. */
19
20#ifndef _NETINET_IN_H
21# error "Never use <bits/in.h> directly; include <netinet/in.h> instead."
22#endif
23
24/* If the application has already included linux/in6.h from a linux-based
25 kernel then we will not define the IPv6 IPPROTO_* defines, in6_addr (nor the
26 defines), sockaddr_in6, or ipv6_mreq. Same for in6_ptkinfo or ip6_mtuinfo
27 in linux/ipv6.h. The ABI used by the linux-kernel and glibc match exactly.
28 Neither the linux kernel nor glibc should break this ABI without coordination. */
29#if defined _UAPI_LINUX_IN6_H || defined _UAPI_IPV6_H
30/* This is not quite the same API since the kernel always defines s6_addr16 and
31 s6_addr32. This is not a violation of POSIX since POSIX says "at least the
32 following member" and that holds true. */
33# define __USE_KERNEL_IPV6_DEFS
34#endif
35
36/* Options for use with `getsockopt' and `setsockopt' at the IP level.
37 The first word in the comment at the right is the data type used;
38 "bool" means a boolean value stored in an `int'. */
39#define IP_OPTIONS 4 /* ip_opts; IP per-packet options. */
40#define IP_HDRINCL 3 /* int; Header is included with data. */
41#define IP_TOS 1 /* int; IP type of service and precedence. */
42#define IP_TTL 2 /* int; IP time to live. */
43#define IP_RECVOPTS 6 /* bool; Receive all IP options w/datagram. */
44/* For BSD compatibility. */
45#define IP_RECVRETOPTS IP_RETOPTS /* bool; Receive IP options for response. */
46#define IP_RETOPTS 7 /* ip_opts; Set/get IP per-packet options. */
47#define IP_MULTICAST_IF 32 /* in_addr; set/get IP multicast i/f */
48#define IP_MULTICAST_TTL 33 /* u_char; set/get IP multicast ttl */
49#define IP_MULTICAST_LOOP 34 /* i_char; set/get IP multicast loopback */
50#define IP_ADD_MEMBERSHIP 35 /* ip_mreq; add an IP group membership */
51#define IP_DROP_MEMBERSHIP 36 /* ip_mreq; drop an IP group membership */
52#define IP_UNBLOCK_SOURCE 37 /* ip_mreq_source: unblock data from source */
53#define IP_BLOCK_SOURCE 38 /* ip_mreq_source: block data from source */
54#define IP_ADD_SOURCE_MEMBERSHIP 39 /* ip_mreq_source: join source group */
55#define IP_DROP_SOURCE_MEMBERSHIP 40 /* ip_mreq_source: leave source group */
56#define IP_MSFILTER 41
57#ifdef __USE_MISC
58# define MCAST_JOIN_GROUP 42 /* group_req: join any-source group */
59# define MCAST_BLOCK_SOURCE 43 /* group_source_req: block from given group */
60# define MCAST_UNBLOCK_SOURCE 44 /* group_source_req: unblock from given group*/
61# define MCAST_LEAVE_GROUP 45 /* group_req: leave any-source group */
62# define MCAST_JOIN_SOURCE_GROUP 46 /* group_source_req: join source-spec gr */
63# define MCAST_LEAVE_SOURCE_GROUP 47 /* group_source_req: leave source-spec gr*/
64# define MCAST_MSFILTER 48
65# define IP_MULTICAST_ALL 49
66# define IP_UNICAST_IF 50
67
68# define MCAST_EXCLUDE 0
69# define MCAST_INCLUDE 1
70#endif
71
72#define IP_ROUTER_ALERT 5 /* bool */
73#define IP_PKTINFO 8 /* bool */
74#define IP_PKTOPTIONS 9
75#define IP_PMTUDISC 10 /* obsolete name? */
76#define IP_MTU_DISCOVER 10 /* int; see below */
77#define IP_RECVERR 11 /* bool */
78#define IP_RECVTTL 12 /* bool */
79#define IP_RECVTOS 13 /* bool */
80#define IP_MTU 14 /* int */
81#define IP_FREEBIND 15
82#define IP_IPSEC_POLICY 16
83#define IP_XFRM_POLICY 17
84#define IP_PASSSEC 18
85#define IP_TRANSPARENT 19
86#define IP_MULTICAST_ALL 49 /* bool */
87
88/* TProxy original addresses */
89#define IP_ORIGDSTADDR 20
90#define IP_RECVORIGDSTADDR IP_ORIGDSTADDR
91
92#define IP_MINTTL 21
93#define IP_NODEFRAG 22
94#define IP_CHECKSUM 23
95
96/* IP_MTU_DISCOVER arguments. */
97#define IP_PMTUDISC_DONT 0 /* Never send DF frames. */
98#define IP_PMTUDISC_WANT 1 /* Use per route hints. */
99#define IP_PMTUDISC_DO 2 /* Always DF. */
100#define IP_PMTUDISC_PROBE 3 /* Ignore dst pmtu. */
101/* Always use interface mtu (ignores dst pmtu) but don't set DF flag.
102 Also incoming ICMP frag_needed notifications will be ignored on
103 this socket to prevent accepting spoofed ones. */
104#define IP_PMTUDISC_INTERFACE 4
105/* Like IP_PMTUDISC_INTERFACE but allow packets to be fragmented. */
106#define IP_PMTUDISC_OMIT 5
107
108#define IP_MULTICAST_IF 32
109#define IP_MULTICAST_TTL 33
110#define IP_MULTICAST_LOOP 34
111#define IP_ADD_MEMBERSHIP 35
112#define IP_DROP_MEMBERSHIP 36
113#define IP_UNBLOCK_SOURCE 37
114#define IP_BLOCK_SOURCE 38
115#define IP_ADD_SOURCE_MEMBERSHIP 39
116#define IP_DROP_SOURCE_MEMBERSHIP 40
117#define IP_MSFILTER 41
118#define IP_MULTICAST_ALL 49
119#define IP_UNICAST_IF 50
120
121/* To select the IP level. */
122#define SOL_IP 0
123
124#define IP_DEFAULT_MULTICAST_TTL 1
125#define IP_DEFAULT_MULTICAST_LOOP 1
126#define IP_MAX_MEMBERSHIPS 20
127
128#ifdef __USE_MISC
129/* Structure used to describe IP options for IP_OPTIONS and IP_RETOPTS.
130 The `ip_dst' field is used for the first-hop gateway when using a
131 source route (this gets put into the header proper). */
132struct ip_opts
133 {
134 struct in_addr ip_dst; /* First hop; zero without source route. */
135 char ip_opts[40]; /* Actually variable in size. */
136 };
137
138/* Like `struct ip_mreq' but including interface specification by index. */
139struct ip_mreqn
140 {
141 struct in_addr imr_multiaddr; /* IP multicast address of group */
142 struct in_addr imr_address; /* local IP address of interface */
143 int imr_ifindex; /* Interface index */
144 };
145
146/* Structure used for IP_PKTINFO. */
147struct in_pktinfo
148 {
149 int ipi_ifindex; /* Interface index */
150 struct in_addr ipi_spec_dst; /* Routing destination address */
151 struct in_addr ipi_addr; /* Header destination address */
152 };
153#endif
154
155/* Options for use with `getsockopt' and `setsockopt' at the IPv6 level.
156 The first word in the comment at the right is the data type used;
157 "bool" means a boolean value stored in an `int'. */
158#define IPV6_ADDRFORM 1
159#define IPV6_2292PKTINFO 2
160#define IPV6_2292HOPOPTS 3
161#define IPV6_2292DSTOPTS 4
162#define IPV6_2292RTHDR 5
163#define IPV6_2292PKTOPTIONS 6
164#define IPV6_CHECKSUM 7
165#define IPV6_2292HOPLIMIT 8
166
167#define SCM_SRCRT IPV6_RXSRCRT
168
169#define IPV6_NEXTHOP 9
170#define IPV6_AUTHHDR 10
171#define IPV6_UNICAST_HOPS 16
172#define IPV6_MULTICAST_IF 17
173#define IPV6_MULTICAST_HOPS 18
174#define IPV6_MULTICAST_LOOP 19
175#define IPV6_JOIN_GROUP 20
176#define IPV6_LEAVE_GROUP 21
177#define IPV6_ROUTER_ALERT 22
178#define IPV6_MTU_DISCOVER 23
179#define IPV6_MTU 24
180#define IPV6_RECVERR 25
181#define IPV6_V6ONLY 26
182#define IPV6_JOIN_ANYCAST 27
183#define IPV6_LEAVE_ANYCAST 28
184#define IPV6_IPSEC_POLICY 34
185#define IPV6_XFRM_POLICY 35
186
187/* Advanced API (RFC3542) (1). */
188#define IPV6_RECVPKTINFO 49
189#define IPV6_PKTINFO 50
190#define IPV6_RECVHOPLIMIT 51
191#define IPV6_HOPLIMIT 52
192#define IPV6_RECVHOPOPTS 53
193#define IPV6_HOPOPTS 54
194#define IPV6_RTHDRDSTOPTS 55
195#define IPV6_RECVRTHDR 56
196#define IPV6_RTHDR 57
197#define IPV6_RECVDSTOPTS 58
198#define IPV6_DSTOPTS 59
199#define IPV6_RECVPATHMTU 60
200#define IPV6_PATHMTU 61
201#define IPV6_DONTFRAG 62
202
203/* Advanced API (RFC3542) (2). */
204#define IPV6_RECVTCLASS 66
205#define IPV6_TCLASS 67
206
207/* Obsolete synonyms for the above. */
208#define IPV6_ADD_MEMBERSHIP IPV6_JOIN_GROUP
209#define IPV6_DROP_MEMBERSHIP IPV6_LEAVE_GROUP
210#define IPV6_RXHOPOPTS IPV6_HOPOPTS
211#define IPV6_RXDSTOPTS IPV6_DSTOPTS
212
213/* IPV6_MTU_DISCOVER values. */
214#define IPV6_PMTUDISC_DONT 0 /* Never send DF frames. */
215#define IPV6_PMTUDISC_WANT 1 /* Use per route hints. */
216#define IPV6_PMTUDISC_DO 2 /* Always DF. */
217#define IPV6_PMTUDISC_PROBE 3 /* Ignore dst pmtu. */
218#define IPV6_PMTUDISC_INTERFACE 4 /* See IP_PMTUDISC_INTERFACE. */
219#define IPV6_PMTUDISC_OMIT 5 /* See IP_PMTUDISC_OMIT. */
220
221/* Socket level values for IPv6. */
222#define SOL_IPV6 41
223#define SOL_ICMPV6 58
224
225/* Routing header options for IPv6. */
226#define IPV6_RTHDR_LOOSE 0 /* Hop doesn't need to be neighbour. */
227#define IPV6_RTHDR_STRICT 1 /* Hop must be a neighbour. */
228
229#define IPV6_RTHDR_TYPE_0 0 /* IPv6 Routing header type 0. */
230