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acddc0ed | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
718e3744 | 2 | /* Router advertisement |
3 | * Copyright (C) 1999 Kunihiro Ishiguro | |
718e3744 | 4 | */ |
5 | ||
6 | #ifndef _ZEBRA_SOCKOPT_H | |
7 | #define _ZEBRA_SOCKOPT_H | |
8 | ||
0df7c91f PJ |
9 | #include "sockunion.h" |
10 | ||
5e244469 RW |
11 | #ifdef __cplusplus |
12 | extern "C" { | |
13 | #endif | |
14 | ||
d62a17ae | 15 | extern void setsockopt_so_recvbuf(int sock, int size); |
16 | extern void setsockopt_so_sendbuf(const int sock, int size); | |
17 | extern int getsockopt_so_sendbuf(const int sock); | |
772aae8b | 18 | extern int getsockopt_so_recvbuf(const int sock); |
0b3acf4f | 19 | |
d62a17ae | 20 | extern int setsockopt_ipv6_pktinfo(int, int); |
d62a17ae | 21 | extern int setsockopt_ipv6_multicast_hops(int, int); |
22 | extern int setsockopt_ipv6_unicast_hops(int, int); | |
23 | extern int setsockopt_ipv6_hoplimit(int, int); | |
24 | extern int setsockopt_ipv6_multicast_loop(int, int); | |
25 | extern int setsockopt_ipv6_tclass(int, int); | |
718e3744 | 26 | |
0d6f7fd6 | 27 | #define SOPT_SIZE_CMSG_PKTINFO_IPV6() (sizeof(struct in6_pktinfo)); |
e6822768 | 28 | |
afa43b23 | 29 | /* |
30 | * Size defines for control messages used to get ifindex. We define | |
31 | * values for each method, and define a macro that can be used by code | |
32 | * that is unaware of which method is in use. | |
69e1325f | 33 | * These values are without any alignment needed (see CMSG_SPACE in RFC3542). |
afa43b23 | 34 | */ |
d62a17ae | 35 | #if defined(IP_PKTINFO) |
afa43b23 | 36 | /* Linux in_pktinfo. */ |
0d6f7fd6 | 37 | #define SOPT_SIZE_CMSG_PKTINFO_IPV4() (CMSG_SPACE(sizeof(struct in_pktinfo))) |
afa43b23 | 38 | /* XXX This should perhaps be defined even if IP_PKTINFO is not. */ |
d62a17ae | 39 | #define SOPT_SIZE_CMSG_PKTINFO(af) \ |
e6822768 | 40 | ((af == AF_INET) ? SOPT_SIZE_CMSG_PKTINFO_IPV4() \ |
41 | : SOPT_SIZE_CMSG_PKTINFO_IPV6() | |
23b9c61e | 42 | #endif /* IP_PKTINFO */ |
e6822768 | 43 | |
d62a17ae | 44 | #if defined(IP_RECVIF) |
23b9c61e | 45 | /* BSD/Solaris */ |
afa43b23 | 46 | |
0d6f7fd6 | 47 | #define SOPT_SIZE_CMSG_RECVIF_IPV4() (sizeof(struct sockaddr_dl)) |
23b9c61e | 48 | #endif /* IP_RECVIF */ |
e6822768 | 49 | |
23b9c61e | 50 | /* SOPT_SIZE_CMSG_IFINDEX_IPV4 - portable type */ |
d62a17ae | 51 | #if defined(SOPT_SIZE_CMSG_PKTINFO) |
23b9c61e | 52 | #define SOPT_SIZE_CMSG_IFINDEX_IPV4() SOPT_SIZE_CMSG_PKTINFO_IPV4() |
d62a17ae | 53 | #elif defined(SOPT_SIZE_CMSG_RECVIF_IPV4) |
23b9c61e | 54 | #define SOPT_SIZE_CMSG_IFINDEX_IPV4() SOPT_SIZE_CMSG_RECVIF_IPV4() |
d62a17ae | 55 | #else /* Nothing available */ |
0d6f7fd6 | 56 | #define SOPT_SIZE_CMSG_IFINDEX_IPV4() (sizeof(char *)) |
23b9c61e | 57 | #endif /* SOPT_SIZE_CMSG_IFINDEX_IPV4 */ |
4f7baa0e | 58 | |
d62a17ae | 59 | #define SOPT_SIZE_CMSG_IFINDEX(af) \ |
23b9c61e | 60 | (((af) == AF_INET) : SOPT_SIZE_CMSG_IFINDEX_IPV4() \ |
61 | ? SOPT_SIZE_CMSG_PKTINFO_IPV6()) | |
4f7baa0e | 62 | |
4a3867d0 | 63 | extern int setsockopt_ipv4_multicast_if(int sock, struct in_addr if_addr, |
b892f1dd | 64 | ifindex_t ifindex); |
69bf3a39 | 65 | extern int setsockopt_ipv4_multicast(int sock, int optname, |
d62a17ae | 66 | struct in_addr if_addr, |
67 | unsigned int mcast_addr, | |
68 | ifindex_t ifindex); | |
d7c0a89a | 69 | extern int setsockopt_ipv4_multicast_loop(int sock, uint8_t val); |
c5bdb09f | 70 | |
1423c809 | 71 | extern int setsockopt_ipv4_tos(int sock, int tos); |
e6822768 | 72 | |
afa43b23 | 73 | /* Ask for, and get, ifindex, by whatever method is supported. */ |
d62a17ae | 74 | extern int setsockopt_ifindex(int, int, ifindex_t); |
75 | extern ifindex_t getsockopt_ifindex(int, struct msghdr *); | |
96e27c99 | 76 | |
d62a17ae | 77 | /* swab the fields in iph between the host order and system order expected |
96e27c99 | 78 | * for IP_HDRINCL. |
79 | */ | |
d62a17ae | 80 | extern void sockopt_iphdrincl_swab_htosys(struct ip *iph); |
81 | extern void sockopt_iphdrincl_swab_systoh(struct ip *iph); | |
96e27c99 | 82 | |
d62a17ae | 83 | extern int sockopt_tcp_rtt(int); |
b33e4666 QY |
84 | |
85 | /* | |
86 | * TCP MD5 signature option. This option allows TCP MD5 to be enabled on | |
87 | * addresses. | |
88 | * | |
89 | * sock | |
90 | * Socket to enable option on. | |
91 | * | |
92 | * su | |
93 | * Sockunion specifying address to enable option on. | |
94 | * | |
95 | * password | |
96 | * MD5 auth password | |
97 | */ | |
0df7c91f | 98 | extern int sockopt_tcp_signature(int sock, union sockunion *su, |
d62a17ae | 99 | const char *password); |
5e244469 | 100 | |
b33e4666 QY |
101 | /* |
102 | * Extended TCP MD5 signature option. This option allows TCP MD5 to be enabled | |
103 | * on prefixes. | |
104 | * | |
105 | * sock | |
106 | * Socket to enable option on. | |
107 | * | |
108 | * su | |
109 | * Sockunion specifying address (or prefix) to enable option on. | |
110 | * | |
111 | * prefixlen | |
112 | * 0 - su is an address; fall back to non-extended mode | |
113 | * Else - su is a prefix; prefixlen is the mask length | |
114 | * | |
115 | * password | |
116 | * MD5 auth password | |
117 | */ | |
118 | extern int sockopt_tcp_signature_ext(int sock, union sockunion *su, | |
119 | uint16_t prefixlen, const char *password); | |
120 | ||
4ab46701 AR |
121 | /* |
122 | * set TCP max segment size. This option allows user to configure | |
123 | * max segment size for TCP session | |
124 | * | |
125 | * sock | |
126 | * Socket to enable option on. | |
127 | * | |
128 | * tcp_maxseg | |
129 | * value used for TCP segment size negotiation during SYN | |
130 | */ | |
131 | extern int sockopt_tcp_mss_set(int sock, int tcp_maxseg); | |
132 | ||
133 | /* | |
134 | * get TCP max segment size. This option allows user to get | |
135 | * the segment size for TCP session | |
136 | * | |
137 | * sock | |
138 | * Socket to get max segement size. | |
139 | */ | |
140 | extern int sockopt_tcp_mss_get(int sock); | |
5c480b5d XL |
141 | |
142 | /* | |
143 | * Configure TCP keepalive for a given socket | |
144 | * | |
145 | * sock | |
146 | * Socket to enable keepalive option on. | |
147 | * | |
148 | * keepalive_idle | |
149 | * number of seconds a connection needs to be idle | |
150 | * before sending out keep-alive proves | |
151 | * | |
152 | * keepalive_intvl | |
153 | * number of seconds between TCP keep-alive probes | |
154 | * | |
155 | * keepalive_probes | |
156 | * max number of probers to send before giving up | |
157 | * and killing tcp connection | |
158 | */ | |
159 | extern int setsockopt_tcp_keepalive(int sock, uint16_t keepalive_idle, | |
160 | uint16_t keepalive_intvl, | |
161 | uint16_t keepalive_probes); | |
162 | ||
5e244469 RW |
163 | #ifdef __cplusplus |
164 | } | |
165 | #endif | |
166 | ||
718e3744 | 167 | #endif /*_ZEBRA_SOCKOPT_H */ |