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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
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
22 #ifndef _ZEBRA_SOCKOPT_H
23 #define _ZEBRA_SOCKOPT_H
25 #include "sockunion.h"
27 /* Override (vty) socket paths, but keep the filename */
28 extern void set_socket_path (char *path
, const char *defaultpath
,
29 char *newpath
, int maxsize
);
31 extern void setsockopt_so_recvbuf (int sock
, int size
);
32 extern void setsockopt_so_sendbuf (const int sock
, int size
);
33 extern int getsockopt_so_sendbuf (const int sock
);
36 extern int setsockopt_ipv6_pktinfo (int, int);
37 extern int setsockopt_ipv6_checksum (int, int);
38 extern int setsockopt_ipv6_multicast_hops (int, int);
39 extern int setsockopt_ipv6_unicast_hops (int, int);
40 extern int setsockopt_ipv6_hoplimit (int, int);
41 extern int setsockopt_ipv6_multicast_loop (int, int);
42 extern int setsockopt_ipv6_tclass (int, int);
43 #endif /* HAVE_IPV6 */
46 * It is OK to reference in6_pktinfo here without a protecting #if
47 * because this macro will only be used #if HAVE_IPV6, and in6_pktinfo
48 * is not optional for HAVE_IPV6.
50 #define SOPT_SIZE_CMSG_PKTINFO_IPV6() (sizeof (struct in6_pktinfo));
53 * Size defines for control messages used to get ifindex. We define
54 * values for each method, and define a macro that can be used by code
55 * that is unaware of which method is in use.
56 * These values are without any alignment needed (see CMSG_SPACE in RFC3542).
58 #if defined (IP_PKTINFO)
59 /* Linux in_pktinfo. */
60 #define SOPT_SIZE_CMSG_PKTINFO_IPV4() (CMSG_SPACE(sizeof (struct in_pktinfo)))
61 /* XXX This should perhaps be defined even if IP_PKTINFO is not. */
62 #define SOPT_SIZE_CMSG_PKTINFO(af) \
63 ((af == AF_INET) ? SOPT_SIZE_CMSG_PKTINFO_IPV4() \
64 : SOPT_SIZE_CMSG_PKTINFO_IPV6()
65 #endif /* IP_PKTINFO */
67 #if defined (IP_RECVIF)
71 #define SOPT_SIZE_CMSG_RECVIF_IPV4() (sizeof (uint_t))
73 #define SOPT_SIZE_CMSG_RECVIF_IPV4() (sizeof (struct sockaddr_dl))
75 #endif /* IP_RECVIF */
77 /* SOPT_SIZE_CMSG_IFINDEX_IPV4 - portable type */
78 #if defined (SOPT_SIZE_CMSG_PKTINFO)
79 #define SOPT_SIZE_CMSG_IFINDEX_IPV4() SOPT_SIZE_CMSG_PKTINFO_IPV4()
80 #elif defined (SOPT_SIZE_CMSG_RECVIF_IPV4)
81 #define SOPT_SIZE_CMSG_IFINDEX_IPV4() SOPT_SIZE_CMSG_RECVIF_IPV4()
82 #else /* Nothing available */
83 #define SOPT_SIZE_CMSG_IFINDEX_IPV4() (sizeof (char *))
84 #endif /* SOPT_SIZE_CMSG_IFINDEX_IPV4 */
86 #define SOPT_SIZE_CMSG_IFINDEX(af) \
87 (((af) == AF_INET) : SOPT_SIZE_CMSG_IFINDEX_IPV4() \
88 ? SOPT_SIZE_CMSG_PKTINFO_IPV6())
90 extern int setsockopt_ipv4_multicast_if(int sock
, struct in_addr if_addr
,
92 extern int setsockopt_ipv4_multicast(int sock
, int optname
,
93 struct in_addr if_addr
,
94 unsigned int mcast_addr
,
96 extern int setsockopt_ipv4_multicast_loop (int sock
, u_char val
);
98 extern int setsockopt_ipv4_tos(int sock
, int tos
);
100 /* Ask for, and get, ifindex, by whatever method is supported. */
101 extern int setsockopt_ifindex (int, int, ifindex_t
);
102 extern ifindex_t
getsockopt_ifindex (int, struct msghdr
*);
104 /* swab the fields in iph between the host order and system order expected
107 extern void sockopt_iphdrincl_swab_htosys (struct ip
*iph
);
108 extern void sockopt_iphdrincl_swab_systoh (struct ip
*iph
);
110 extern int sockopt_tcp_rtt (int);
111 extern int sockopt_tcp_signature(int sock
, union sockunion
*su
,
112 const char *password
);
113 #endif /*_ZEBRA_SOCKOPT_H */