| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame^] | 1 | /* Copyright (C) 1997-2015 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 | /* 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 | /* To select the IP level. */ |
| 25 | #define SOL_IP 0 |
| 26 | |
| 27 | /* Options for use with `getsockopt' and `setsockopt' at the IP level. |
| 28 | The first word in the comment at the right is the data type used; |
| 29 | "bool" means a boolean value stored in an `int'. */ |
| 30 | #define IP_OPTIONS 1 /* ip_opts; IP per-packet options. */ |
| 31 | #define IP_HDRINCL 2 /* int; Header is included with data. */ |
| 32 | #define IP_TOS 3 /* int; IP type of service and precedence. */ |
| 33 | #define IP_TTL 4 /* int; IP time to live. */ |
| 34 | #define IP_RECVOPTS 5 /* bool; Receive all IP options w/datagram. */ |
| 35 | #define IP_RECVRETOPTS 6 /* bool; Receive IP options for response. */ |
| 36 | #define IP_RECVDSTADDR 7 /* bool; Receive IP dst addr w/datagram. */ |
| 37 | #define IP_RETOPTS 8 /* ip_opts; Set/get IP per-packet options. */ |
| 38 | #define IP_MULTICAST_IF 9 /* in_addr; set/get IP multicast i/f */ |
| 39 | #define IP_MULTICAST_TTL 10 /* u_char; set/get IP multicast ttl */ |
| 40 | #define IP_MULTICAST_LOOP 11 /* i_char; set/get IP multicast loopback */ |
| 41 | #define IP_ADD_MEMBERSHIP 12 /* ip_mreq; add an IP group membership */ |
| 42 | #define IP_DROP_MEMBERSHIP 13 /* ip_mreq; drop an IP group membership */ |
| 43 | |
| 44 | /* Structure used to describe IP options for IP_OPTIONS and IP_RETOPTS. |
| 45 | The `ip_dst' field is used for the first-hop gateway when using a |
| 46 | source route (this gets put into the header proper). */ |
| 47 | struct ip_opts |
| 48 | { |
| 49 | struct in_addr ip_dst; /* First hop; zero without source route. */ |
| 50 | char ip_opts[40]; /* Actually variable in size. */ |
| 51 | }; |
| 52 | |
| 53 | /* Socket-level values for IPv6. */ |
| 54 | #define SOL_IPV6 41 |
| 55 | #define SOL_ICMPV6 58 |
| 56 | |
| 57 | /* IPV6 socket options. */ |
| 58 | #define IPV6_ADDRFORM 1 |
| 59 | #define IPV6_PKTINFO 2 |
| 60 | #define IPV6_HOPOPTS 3 |
| 61 | #define IPV6_DSTOPTS 4 |
| 62 | #define IPV6_RTHDR 5 |
| 63 | #define IPV6_PKTOPTIONS 6 |
| 64 | #define IPV6_CHECKSUM 7 |
| 65 | #define IPV6_HOPLIMIT 8 |
| 66 | |
| 67 | #define IPV6_RXINFO IPV6_PKTINFO |
| 68 | #define IPV6_TXINFO IPV6_PKTINFO |
| 69 | #define SCM_SRCINFO IPV6_PKTINFO |
| 70 | #define SCM_SRCRT IPV6_RXSRCRT |
| 71 | |
| 72 | #define IPV6_UNICAST_HOPS 16 |
| 73 | #define IPV6_MULTICAST_IF 17 |
| 74 | #define IPV6_MULTICAST_HOPS 18 |
| 75 | #define IPV6_MULTICAST_LOOP 19 |
| 76 | #define IPV6_JOIN_GROUP 20 |
| 77 | #define IPV6_LEAVE_GROUP 21 |
| 78 | #define IPV6_ROUTER_ALERT 22 |
| 79 | #define IPV6_MTU_DISCOVER 23 |
| 80 | #define IPV6_MTU 24 |
| 81 | #define IPV6_RECVERR 25 |
| 82 | #define IPV6_V6ONLY 26 |
| 83 | #define IPV6_JOIN_ANYCAST 27 |
| 84 | #define IPV6_LEAVE_ANYCAST 28 |
| 85 | |
| 86 | /* Obsolete synonyms for the above. */ |
| 87 | #define IPV6_ADD_MEMBERSHIP IPV6_JOIN_GROUP |
| 88 | #define IPV6_DROP_MEMBERSHIP IPV6_LEAVE_GROUP |
| 89 | #define IPV6_RXHOPOPTS IPV6_HOPOPTS |
| 90 | #define IPV6_RXDSTOPTS IPV6_DSTOPTS |
| 91 | |
| 92 | /* Routing header options for IPv6. */ |
| 93 | #define IPV6_RTHDR_LOOSE 0 /* Hop doesn't need to be neighbour. */ |
| 94 | #define IPV6_RTHDR_STRICT 1 /* Hop must be a neighbour. */ |
| 95 | |
| 96 | #define IPV6_RTHDR_TYPE_0 0 /* IPv6 Routing header type 0. */ |