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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 | * | |
896014f4 DL |
16 | * You should have received a copy of the GNU General Public License along |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
718e3744 | 19 | */ |
20 | ||
21 | #ifndef _ZEBRA_SOCKOPT_H | |
22 | #define _ZEBRA_SOCKOPT_H | |
23 | ||
0df7c91f PJ |
24 | #include "sockunion.h" |
25 | ||
5e244469 RW |
26 | #ifdef __cplusplus |
27 | extern "C" { | |
28 | #endif | |
29 | ||
d62a17ae | 30 | extern void setsockopt_so_recvbuf(int sock, int size); |
31 | extern void setsockopt_so_sendbuf(const int sock, int size); | |
32 | extern int getsockopt_so_sendbuf(const int sock); | |
772aae8b | 33 | extern int getsockopt_so_recvbuf(const int sock); |
0b3acf4f | 34 | |
d62a17ae | 35 | extern int setsockopt_ipv6_pktinfo(int, int); |
d62a17ae | 36 | extern int setsockopt_ipv6_multicast_hops(int, int); |
37 | extern int setsockopt_ipv6_unicast_hops(int, int); | |
38 | extern int setsockopt_ipv6_hoplimit(int, int); | |
39 | extern int setsockopt_ipv6_multicast_loop(int, int); | |
40 | extern int setsockopt_ipv6_tclass(int, int); | |
718e3744 | 41 | |
0d6f7fd6 | 42 | #define SOPT_SIZE_CMSG_PKTINFO_IPV6() (sizeof(struct in6_pktinfo)); |
e6822768 | 43 | |
afa43b23 | 44 | /* |
45 | * Size defines for control messages used to get ifindex. We define | |
46 | * values for each method, and define a macro that can be used by code | |
47 | * that is unaware of which method is in use. | |
69e1325f | 48 | * These values are without any alignment needed (see CMSG_SPACE in RFC3542). |
afa43b23 | 49 | */ |
d62a17ae | 50 | #if defined(IP_PKTINFO) |
afa43b23 | 51 | /* Linux in_pktinfo. */ |
0d6f7fd6 | 52 | #define SOPT_SIZE_CMSG_PKTINFO_IPV4() (CMSG_SPACE(sizeof(struct in_pktinfo))) |
afa43b23 | 53 | /* XXX This should perhaps be defined even if IP_PKTINFO is not. */ |
d62a17ae | 54 | #define SOPT_SIZE_CMSG_PKTINFO(af) \ |
e6822768 | 55 | ((af == AF_INET) ? SOPT_SIZE_CMSG_PKTINFO_IPV4() \ |
56 | : SOPT_SIZE_CMSG_PKTINFO_IPV6() | |
23b9c61e | 57 | #endif /* IP_PKTINFO */ |
e6822768 | 58 | |
d62a17ae | 59 | #if defined(IP_RECVIF) |
23b9c61e | 60 | /* BSD/Solaris */ |
afa43b23 | 61 | |
0d6f7fd6 | 62 | #define SOPT_SIZE_CMSG_RECVIF_IPV4() (sizeof(struct sockaddr_dl)) |
23b9c61e | 63 | #endif /* IP_RECVIF */ |
e6822768 | 64 | |
23b9c61e | 65 | /* SOPT_SIZE_CMSG_IFINDEX_IPV4 - portable type */ |
d62a17ae | 66 | #if defined(SOPT_SIZE_CMSG_PKTINFO) |
23b9c61e | 67 | #define SOPT_SIZE_CMSG_IFINDEX_IPV4() SOPT_SIZE_CMSG_PKTINFO_IPV4() |
d62a17ae | 68 | #elif defined(SOPT_SIZE_CMSG_RECVIF_IPV4) |
23b9c61e | 69 | #define SOPT_SIZE_CMSG_IFINDEX_IPV4() SOPT_SIZE_CMSG_RECVIF_IPV4() |
d62a17ae | 70 | #else /* Nothing available */ |
0d6f7fd6 | 71 | #define SOPT_SIZE_CMSG_IFINDEX_IPV4() (sizeof(char *)) |
23b9c61e | 72 | #endif /* SOPT_SIZE_CMSG_IFINDEX_IPV4 */ |
4f7baa0e | 73 | |
d62a17ae | 74 | #define SOPT_SIZE_CMSG_IFINDEX(af) \ |
23b9c61e | 75 | (((af) == AF_INET) : SOPT_SIZE_CMSG_IFINDEX_IPV4() \ |
76 | ? SOPT_SIZE_CMSG_PKTINFO_IPV6()) | |
4f7baa0e | 77 | |
4a3867d0 | 78 | extern int setsockopt_ipv4_multicast_if(int sock, struct in_addr if_addr, |
b892f1dd | 79 | ifindex_t ifindex); |
69bf3a39 | 80 | extern int setsockopt_ipv4_multicast(int sock, int optname, |
d62a17ae | 81 | struct in_addr if_addr, |
82 | unsigned int mcast_addr, | |
83 | ifindex_t ifindex); | |
d7c0a89a | 84 | extern int setsockopt_ipv4_multicast_loop(int sock, uint8_t val); |
c5bdb09f | 85 | |
1423c809 | 86 | extern int setsockopt_ipv4_tos(int sock, int tos); |
e6822768 | 87 | |
afa43b23 | 88 | /* Ask for, and get, ifindex, by whatever method is supported. */ |
d62a17ae | 89 | extern int setsockopt_ifindex(int, int, ifindex_t); |
90 | extern ifindex_t getsockopt_ifindex(int, struct msghdr *); | |
96e27c99 | 91 | |
d62a17ae | 92 | /* swab the fields in iph between the host order and system order expected |
96e27c99 | 93 | * for IP_HDRINCL. |
94 | */ | |
d62a17ae | 95 | extern void sockopt_iphdrincl_swab_htosys(struct ip *iph); |
96 | extern void sockopt_iphdrincl_swab_systoh(struct ip *iph); | |
96e27c99 | 97 | |
d62a17ae | 98 | extern int sockopt_tcp_rtt(int); |
b33e4666 QY |
99 | |
100 | /* | |
101 | * TCP MD5 signature option. This option allows TCP MD5 to be enabled on | |
102 | * addresses. | |
103 | * | |
104 | * sock | |
105 | * Socket to enable option on. | |
106 | * | |
107 | * su | |
108 | * Sockunion specifying address to enable option on. | |
109 | * | |
110 | * password | |
111 | * MD5 auth password | |
112 | */ | |
0df7c91f | 113 | extern int sockopt_tcp_signature(int sock, union sockunion *su, |
d62a17ae | 114 | const char *password); |
5e244469 | 115 | |
b33e4666 QY |
116 | /* |
117 | * Extended TCP MD5 signature option. This option allows TCP MD5 to be enabled | |
118 | * on prefixes. | |
119 | * | |
120 | * sock | |
121 | * Socket to enable option on. | |
122 | * | |
123 | * su | |
124 | * Sockunion specifying address (or prefix) to enable option on. | |
125 | * | |
126 | * prefixlen | |
127 | * 0 - su is an address; fall back to non-extended mode | |
128 | * Else - su is a prefix; prefixlen is the mask length | |
129 | * | |
130 | * password | |
131 | * MD5 auth password | |
132 | */ | |
133 | extern int sockopt_tcp_signature_ext(int sock, union sockunion *su, | |
134 | uint16_t prefixlen, const char *password); | |
135 | ||
5e244469 RW |
136 | #ifdef __cplusplus |
137 | } | |
138 | #endif | |
139 | ||
718e3744 | 140 | #endif /*_ZEBRA_SOCKOPT_H */ |