1 /* Copyright (C) 1997-2022 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 <https://www.gnu.org/licenses/>. */ 17 18 /* Generic version. */ 19 20 #ifndef _NETINET_IN_H 21 # error "Never use <bits/in.h> directly; include <netinet/in.h> instead." 22 #endif 23 24 /* This is the generic version, do not assume a linux-based kernel. */ 25 #define __USE_KERNEL_IPV6_DEFS 0 26 27 /* To select the IP level. */ 28 #define SOL_IP 0 29 30 /* Options for use with `getsockopt' and `setsockopt' at the IP level. 31 The first word in the comment at the right is the data type used; 32 "bool" means a boolean value stored in an `int'. */ 33 #define IP_OPTIONS 1 /* ip_opts; IP per-packet options. */ 34 #define IP_HDRINCL 2 /* int; Header is included with data. */ 35 #define IP_TOS 3 /* int; IP type of service and precedence. */ 36 #define IP_TTL 4 /* int; IP time to live. */ 37 #define IP_RECVOPTS 5 /* bool; Receive all IP options w/datagram. */ 38 #define IP_RECVRETOPTS 6 /* bool; Receive IP options for response. */ 39 #define IP_RECVDSTADDR 7 /* bool; Receive IP dst addr w/datagram. */ 40 #define IP_RETOPTS 8 /* ip_opts; Set/get IP per-packet options. */ 41 #define IP_MULTICAST_IF 9 /* in_addr; set/get IP multicast i/f */ 42 #define IP_MULTICAST_TTL 10 /* unsigned char; set/get IP multicast ttl */ 43 #define IP_MULTICAST_LOOP 11 /* bool; set/get IP multicast loopback */ 44 #define IP_ADD_MEMBERSHIP 12 /* ip_mreq; add an IP group membership */ 45 #define IP_DROP_MEMBERSHIP 13 /* ip_mreq; drop an IP group membership */ 46 47 #ifdef __USE_MISC 48 /* Structure used to describe IP options for IP_OPTIONS and IP_RETOPTS. 49 The `ip_dst' field is used for the first-hop gateway when using a 50 source route (this gets put into the header proper). */ 51 struct ip_opts 52 { 53 struct in_addr ip_dst; /* First hop; zero without source route. */ 54 char ip_opts[40]; /* Actually variable in size. */ 55 }; 56 #endif 57 58 /* Socket-level values for IPv6. */ 59 #define SOL_IPV6 41 60 #define SOL_ICMPV6 58 61 62 /* IPV6 socket options. */ 63 #define IPV6_ADDRFORM 1 64 #define IPV6_2292PKTINFO 2 65 #define IPV6_2292HOPOPTS 3 66 #define IPV6_2292DSTOPTS 4 67 #define IPV6_2292RTHDR 5 68 #define IPV6_2292PKTOPTIONS 6 69 #define IPV6_CHECKSUM 7 70 #define IPV6_2292HOPLIMIT 8 71 72 #define IPV6_RXINFO IPV6_2292PKTINFO 73 #define IPV6_TXINFO IPV6_RXINFO 74 #define SCM_SRCINFO IPV6_TXINFO 75 #define SCM_SRCRT IPV6_RXSRCRT 76 77 #define IPV6_UNICAST_HOPS 16 78 #define IPV6_MULTICAST_IF 17 79 #define IPV6_MULTICAST_HOPS 18 80 #define IPV6_MULTICAST_LOOP 19 81 #define IPV6_JOIN_GROUP 20 82 #define IPV6_LEAVE_GROUP 21 83 #define IPV6_ROUTER_ALERT 22 84 #define IPV6_MTU_DISCOVER 23 85 #define IPV6_MTU 24 86 #define IPV6_RECVERR 25 87 #define IPV6_V6ONLY 26 88 #define IPV6_JOIN_ANYCAST 27 89 #define IPV6_LEAVE_ANYCAST 28 90 91 /* Advanced API (RFC3542) (1). */ 92 #define IPV6_RECVPKTINFO 49 93 #define IPV6_PKTINFO 50 94 #define IPV6_RECVHOPLIMIT 51 95 #define IPV6_HOPLIMIT 52 96 #define IPV6_RECVHOPOPTS 53 97 #define IPV6_HOPOPTS 54 98 #define IPV6_RTHDRDSTOPTS 55 99 #define IPV6_RECVRTHDR 56 100 #define IPV6_RTHDR 57 101 #define IPV6_RECVDSTOPTS 58 102 #define IPV6_DSTOPTS 59 103 #define IPV6_RECVPATHMTU 60 104 #define IPV6_PATHMTU 61 105 #define IPV6_DONTFRAG 62 106 107 /* Obsolete synonyms for the above. */ 108 #define IPV6_ADD_MEMBERSHIP IPV6_JOIN_GROUP 109 #define IPV6_DROP_MEMBERSHIP IPV6_LEAVE_GROUP 110 #define IPV6_RXHOPOPTS IPV6_2292HOPOPTS 111 #define IPV6_RXDSTOPTS IPV6_2292DSTOPTS 112 113 /* Routing header options for IPv6. */ 114 #define IPV6_RTHDR_LOOSE 0 /* Hop doesn't need to be neighbour. */ 115 #define IPV6_RTHDR_STRICT 1 /* Hop must be a neighbour. */ 116 117 #define IPV6_RTHDR_TYPE_0 0 /* IPv6 Routing header type 0. */ 118