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1 /* Router advertisement
2 * Copyright (C) 1999 Kunihiro Ishiguro
4 * This file is part of GNU Zebra.
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
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.
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
21 #ifndef _ZEBRA_SOCKOPT_H
22 #define _ZEBRA_SOCKOPT_H
24 #include "sockunion.h"
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
);
33 extern int getsockopt_so_recvbuf(const int sock
);
35 extern int setsockopt_ipv6_pktinfo(int, int);
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);
42 #define SOPT_SIZE_CMSG_PKTINFO_IPV6() (sizeof(struct in6_pktinfo));
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.
48 * These values are without any alignment needed (see CMSG_SPACE in RFC3542).
50 #if defined(IP_PKTINFO)
51 /* Linux in_pktinfo. */
52 #define SOPT_SIZE_CMSG_PKTINFO_IPV4() (CMSG_SPACE(sizeof(struct in_pktinfo)))
53 /* XXX This should perhaps be defined even if IP_PKTINFO is not. */
54 #define SOPT_SIZE_CMSG_PKTINFO(af) \
55 ((af == AF_INET) ? SOPT_SIZE_CMSG_PKTINFO_IPV4() \
56 : SOPT_SIZE_CMSG_PKTINFO_IPV6()
57 #endif /* IP_PKTINFO */
59 #if defined(IP_RECVIF)
62 #define SOPT_SIZE_CMSG_RECVIF_IPV4() (sizeof(struct sockaddr_dl))
63 #endif /* IP_RECVIF */
65 /* SOPT_SIZE_CMSG_IFINDEX_IPV4 - portable type */
66 #if defined(SOPT_SIZE_CMSG_PKTINFO)
67 #define SOPT_SIZE_CMSG_IFINDEX_IPV4() SOPT_SIZE_CMSG_PKTINFO_IPV4()
68 #elif defined(SOPT_SIZE_CMSG_RECVIF_IPV4)
69 #define SOPT_SIZE_CMSG_IFINDEX_IPV4() SOPT_SIZE_CMSG_RECVIF_IPV4()
70 #else /* Nothing available */
71 #define SOPT_SIZE_CMSG_IFINDEX_IPV4() (sizeof(char *))
72 #endif /* SOPT_SIZE_CMSG_IFINDEX_IPV4 */
74 #define SOPT_SIZE_CMSG_IFINDEX(af) \
75 (((af) == AF_INET) : SOPT_SIZE_CMSG_IFINDEX_IPV4() \
76 ? SOPT_SIZE_CMSG_PKTINFO_IPV6())
78 extern int setsockopt_ipv4_multicast_if(int sock
, struct in_addr if_addr
,
80 extern int setsockopt_ipv4_multicast(int sock
, int optname
,
81 struct in_addr if_addr
,
82 unsigned int mcast_addr
,
84 extern int setsockopt_ipv4_multicast_loop(int sock
, uint8_t val
);
86 extern int setsockopt_ipv4_tos(int sock
, int tos
);
88 /* Ask for, and get, ifindex, by whatever method is supported. */
89 extern int setsockopt_ifindex(int, int, ifindex_t
);
90 extern ifindex_t
getsockopt_ifindex(int, struct msghdr
*);
92 /* swab the fields in iph between the host order and system order expected
95 extern void sockopt_iphdrincl_swab_htosys(struct ip
*iph
);
96 extern void sockopt_iphdrincl_swab_systoh(struct ip
*iph
);
98 extern int sockopt_tcp_rtt(int);
101 * TCP MD5 signature option. This option allows TCP MD5 to be enabled on
105 * Socket to enable option on.
108 * Sockunion specifying address to enable option on.
113 extern int sockopt_tcp_signature(int sock
, union sockunion
*su
,
114 const char *password
);
117 * Extended TCP MD5 signature option. This option allows TCP MD5 to be enabled
121 * Socket to enable option on.
124 * Sockunion specifying address (or prefix) to enable option on.
127 * 0 - su is an address; fall back to non-extended mode
128 * Else - su is a prefix; prefixlen is the mask length
133 extern int sockopt_tcp_signature_ext(int sock
, union sockunion
*su
,
134 uint16_t prefixlen
, const char *password
);
140 #endif /*_ZEBRA_SOCKOPT_H */