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718e3744 | 1 | /* Router advertisement |
2 | * Copyright (C) 1999 Kunihiro Ishiguro | |
3 | * | |
4 | * This file is part of GNU Zebra. | |
5 | * | |
6 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2, or (at your option) any | |
9 | * later version. | |
10 | * | |
11 | * GNU Zebra is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with GNU Zebra; see the file COPYING. If not, write to the Free | |
18 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
19 | * 02111-1307, USA. | |
20 | */ | |
21 | ||
22 | #ifndef _ZEBRA_SOCKOPT_H | |
23 | #define _ZEBRA_SOCKOPT_H | |
24 | ||
0b3acf4f | 25 | int setsockopt_so_recvbuf (int sock, int size); |
26 | ||
718e3744 | 27 | #ifdef HAVE_IPV6 |
28 | int setsockopt_ipv6_pktinfo (int, int); | |
29 | int setsockopt_ipv6_checksum (int, int); | |
30 | int setsockopt_ipv6_multicast_hops (int, int); | |
31 | int setsockopt_ipv6_unicast_hops (int, int); | |
32 | int setsockopt_ipv6_hoplimit (int, int); | |
33 | int setsockopt_ipv6_multicast_loop (int, int); | |
34 | #endif /* HAVE_IPV6 */ | |
35 | ||
afa43b23 | 36 | /* |
37 | * It is OK to reference in6_pktinfo here without a protecting #if | |
38 | * because this macro will only be used #if HAVE_IPV6, and in6_pktinfo | |
39 | * is not optional for HAVE_IPV6. | |
40 | */ | |
41 | #define SOPT_SIZE_CMSG_PKTINFO_IPV6() (sizeof (struct in6_pktinfo)); | |
e6822768 | 42 | |
afa43b23 | 43 | /* |
44 | * Size defines for control messages used to get ifindex. We define | |
45 | * values for each method, and define a macro that can be used by code | |
46 | * that is unaware of which method is in use. | |
47 | * XXX Needs to use CMSG_DATA and CMSG_ALIGN. | |
48 | */ | |
49 | #if defined (IP_PKTINFO) | |
50 | /* Linux in_pktinfo. */ | |
23b9c61e | 51 | #define SOPT_SIZE_CMSG_PKTINFO_IPV4() (CMSG_SPACE(sizeof (struct in_pktinfo))) |
afa43b23 | 52 | /* XXX This should perhaps be defined even if IP_PKTINFO is not. */ |
e6822768 | 53 | #define SOPT_SIZE_CMSG_PKTINFO(af) \ |
54 | ((af == AF_INET) ? SOPT_SIZE_CMSG_PKTINFO_IPV4() \ | |
55 | : SOPT_SIZE_CMSG_PKTINFO_IPV6() | |
23b9c61e | 56 | #endif /* IP_PKTINFO */ |
e6822768 | 57 | |
23b9c61e | 58 | #if defined (IP_RECVIF) |
59 | /* BSD/Solaris */ | |
afa43b23 | 60 | |
4f7baa0e | 61 | #if defined (SUNOS_5) |
23b9c61e | 62 | #define SOPT_SIZE_CMSG_RECVIF_IPV4() (sizeof (uint_t)) |
4f7baa0e | 63 | #else |
23b9c61e | 64 | #define SOPT_SIZE_CMSG_RECVIF_IPV4() \ |
afa43b23 | 65 | __CMSG_ALIGN((sizeof (struct sockaddr_dl))) |
4f7baa0e | 66 | #endif /* SUNOS_5 */ |
23b9c61e | 67 | #endif /* IP_RECVIF */ |
e6822768 | 68 | |
23b9c61e | 69 | /* SOPT_SIZE_CMSG_IFINDEX_IPV4 - portable type */ |
70 | #if defined (SOPT_SIZE_CMSG_PKTINFO) | |
71 | #define SOPT_SIZE_CMSG_IFINDEX_IPV4() SOPT_SIZE_CMSG_PKTINFO_IPV4() | |
72 | #elif defined (SOPT_SIZE_CMSG_RECVIF_IPV4) | |
73 | #define SOPT_SIZE_CMSG_IFINDEX_IPV4() SOPT_SIZE_CMSG_RECVIF_IPV4() | |
4927cf0b | 74 | #else /* Nothing available */ |
23b9c61e | 75 | #define SOPT_SIZE_CMSG_IFINDEX_IPV4() (sizeof (char *)) |
76 | #endif /* SOPT_SIZE_CMSG_IFINDEX_IPV4 */ | |
4f7baa0e | 77 | |
e6822768 | 78 | #define SOPT_SIZE_CMSG_IFINDEX(af) \ |
23b9c61e | 79 | (((af) == AF_INET) : SOPT_SIZE_CMSG_IFINDEX_IPV4() \ |
80 | ? SOPT_SIZE_CMSG_PKTINFO_IPV6()) | |
4f7baa0e | 81 | |
718e3744 | 82 | int setsockopt_multicast_ipv4(int sock, |
83 | int optname, | |
84 | struct in_addr if_addr, | |
85 | unsigned int mcast_addr, | |
86 | unsigned int ifindex); | |
e6822768 | 87 | |
afa43b23 | 88 | /* Ask for, and get, ifindex, by whatever method is supported. */ |
e6822768 | 89 | int setsockopt_ifindex (int, int, int); |
90 | int getsockopt_ifindex (int, struct msghdr *); | |
96e27c99 | 91 | |
92 | /* swab the fields in iph between the host order and system order expected | |
93 | * for IP_HDRINCL. | |
94 | */ | |
95 | void sockopt_iphdrincl_swab_htosys (struct ip *iph); | |
96 | void sockopt_iphdrincl_swab_systoh (struct ip *iph); | |
97 | ||
718e3744 | 98 | #endif /*_ZEBRA_SOCKOPT_H */ |