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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 | ||
0df7c91f PJ |
25 | #include "sockunion.h" |
26 | ||
8cc4198f | 27 | extern int setsockopt_so_recvbuf (int sock, int size); |
b7fe4141 DO |
28 | extern int setsockopt_so_sendbuf (const int sock, int size); |
29 | extern int getsockopt_so_sendbuf (const int sock); | |
0b3acf4f | 30 | |
718e3744 | 31 | #ifdef HAVE_IPV6 |
8cc4198f | 32 | extern int setsockopt_ipv6_pktinfo (int, int); |
33 | extern int setsockopt_ipv6_checksum (int, int); | |
34 | extern int setsockopt_ipv6_multicast_hops (int, int); | |
35 | extern int setsockopt_ipv6_unicast_hops (int, int); | |
36 | extern int setsockopt_ipv6_hoplimit (int, int); | |
37 | extern int setsockopt_ipv6_multicast_loop (int, int); | |
718e3744 | 38 | #endif /* HAVE_IPV6 */ |
39 | ||
afa43b23 | 40 | /* |
41 | * It is OK to reference in6_pktinfo here without a protecting #if | |
42 | * because this macro will only be used #if HAVE_IPV6, and in6_pktinfo | |
43 | * is not optional for HAVE_IPV6. | |
44 | */ | |
45 | #define SOPT_SIZE_CMSG_PKTINFO_IPV6() (sizeof (struct in6_pktinfo)); | |
e6822768 | 46 | |
afa43b23 | 47 | /* |
48 | * Size defines for control messages used to get ifindex. We define | |
49 | * values for each method, and define a macro that can be used by code | |
50 | * that is unaware of which method is in use. | |
69e1325f | 51 | * These values are without any alignment needed (see CMSG_SPACE in RFC3542). |
afa43b23 | 52 | */ |
53 | #if defined (IP_PKTINFO) | |
54 | /* Linux in_pktinfo. */ | |
23b9c61e | 55 | #define SOPT_SIZE_CMSG_PKTINFO_IPV4() (CMSG_SPACE(sizeof (struct in_pktinfo))) |
afa43b23 | 56 | /* XXX This should perhaps be defined even if IP_PKTINFO is not. */ |
e6822768 | 57 | #define SOPT_SIZE_CMSG_PKTINFO(af) \ |
58 | ((af == AF_INET) ? SOPT_SIZE_CMSG_PKTINFO_IPV4() \ | |
59 | : SOPT_SIZE_CMSG_PKTINFO_IPV6() | |
23b9c61e | 60 | #endif /* IP_PKTINFO */ |
e6822768 | 61 | |
23b9c61e | 62 | #if defined (IP_RECVIF) |
63 | /* BSD/Solaris */ | |
afa43b23 | 64 | |
4f7baa0e | 65 | #if defined (SUNOS_5) |
23b9c61e | 66 | #define SOPT_SIZE_CMSG_RECVIF_IPV4() (sizeof (uint_t)) |
4f7baa0e | 67 | #else |
69e1325f | 68 | #define SOPT_SIZE_CMSG_RECVIF_IPV4() (sizeof (struct sockaddr_dl)) |
4f7baa0e | 69 | #endif /* SUNOS_5 */ |
23b9c61e | 70 | #endif /* IP_RECVIF */ |
e6822768 | 71 | |
23b9c61e | 72 | /* SOPT_SIZE_CMSG_IFINDEX_IPV4 - portable type */ |
73 | #if defined (SOPT_SIZE_CMSG_PKTINFO) | |
74 | #define SOPT_SIZE_CMSG_IFINDEX_IPV4() SOPT_SIZE_CMSG_PKTINFO_IPV4() | |
75 | #elif defined (SOPT_SIZE_CMSG_RECVIF_IPV4) | |
76 | #define SOPT_SIZE_CMSG_IFINDEX_IPV4() SOPT_SIZE_CMSG_RECVIF_IPV4() | |
4927cf0b | 77 | #else /* Nothing available */ |
23b9c61e | 78 | #define SOPT_SIZE_CMSG_IFINDEX_IPV4() (sizeof (char *)) |
79 | #endif /* SOPT_SIZE_CMSG_IFINDEX_IPV4 */ | |
4f7baa0e | 80 | |
e6822768 | 81 | #define SOPT_SIZE_CMSG_IFINDEX(af) \ |
23b9c61e | 82 | (((af) == AF_INET) : SOPT_SIZE_CMSG_IFINDEX_IPV4() \ |
83 | ? SOPT_SIZE_CMSG_PKTINFO_IPV6()) | |
4f7baa0e | 84 | |
8cc4198f | 85 | extern int setsockopt_multicast_ipv4(int sock, int optname, |
97cabcf7 AS |
86 | struct in_addr if_addr |
87 | /* required: interface to join on */, | |
8cc4198f | 88 | unsigned int mcast_addr, |
97cabcf7 AS |
89 | unsigned int ifindex |
90 | /* optional: if non-zero, may be used | |
91 | instead of if_addr */); | |
1423c809 | 92 | extern int setsockopt_ipv4_tos(int sock, int tos); |
e6822768 | 93 | |
afa43b23 | 94 | /* Ask for, and get, ifindex, by whatever method is supported. */ |
8cc4198f | 95 | extern int setsockopt_ifindex (int, int, int); |
96 | extern int getsockopt_ifindex (int, struct msghdr *); | |
96e27c99 | 97 | |
98 | /* swab the fields in iph between the host order and system order expected | |
99 | * for IP_HDRINCL. | |
100 | */ | |
8cc4198f | 101 | extern void sockopt_iphdrincl_swab_htosys (struct ip *iph); |
102 | extern void sockopt_iphdrincl_swab_systoh (struct ip *iph); | |
96e27c99 | 103 | |
0df7c91f PJ |
104 | extern int sockopt_tcp_signature(int sock, union sockunion *su, |
105 | const char *password); | |
718e3744 | 106 | #endif /*_ZEBRA_SOCKOPT_H */ |