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/* Router advertisement
* Copyright (C) 1999 Kunihiro Ishiguro
*
* This file is part of GNU Zebra.
*
* GNU Zebra is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* GNU Zebra is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Zebra; see the file COPYING. If not, write to the Free
* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#ifndef _ZEBRA_SOCKOPT_H
#define _ZEBRA_SOCKOPT_H
extern int setsockopt_so_recvbuf (int sock, int size);
extern int setsockopt_so_sendbuf (const int sock, int size);
extern int getsockopt_so_sendbuf (const int sock);
#ifdef HAVE_IPV6
extern int setsockopt_ipv6_pktinfo (int, int);
extern int setsockopt_ipv6_checksum (int, int);
extern int setsockopt_ipv6_multicast_hops (int, int);
extern int setsockopt_ipv6_unicast_hops (int, int);
extern int setsockopt_ipv6_hoplimit (int, int);
extern int setsockopt_ipv6_multicast_loop (int, int);
#endif /* HAVE_IPV6 */
/*
* It is OK to reference in6_pktinfo here without a protecting #if
* because this macro will only be used #if HAVE_IPV6, and in6_pktinfo
* is not optional for HAVE_IPV6.
*/
#define SOPT_SIZE_CMSG_PKTINFO_IPV6() (sizeof (struct in6_pktinfo));
/*
* Size defines for control messages used to get ifindex. We define
* values for each method, and define a macro that can be used by code
* that is unaware of which method is in use.
* These values are without any alignment needed (see CMSG_SPACE in RFC3542).
*/
#if defined (IP_PKTINFO)
/* Linux in_pktinfo. */
#define SOPT_SIZE_CMSG_PKTINFO_IPV4() (CMSG_SPACE(sizeof (struct in_pktinfo)))
/* XXX This should perhaps be defined even if IP_PKTINFO is not. */
#define SOPT_SIZE_CMSG_PKTINFO(af) \
((af == AF_INET) ? SOPT_SIZE_CMSG_PKTINFO_IPV4() \
: SOPT_SIZE_CMSG_PKTINFO_IPV6()
#endif /* IP_PKTINFO */
#if defined (IP_RECVIF)
/* BSD/Solaris */
#if defined (SUNOS_5)
#define SOPT_SIZE_CMSG_RECVIF_IPV4() (sizeof (uint_t))
#else
#define SOPT_SIZE_CMSG_RECVIF_IPV4() (sizeof (struct sockaddr_dl))
#endif /* SUNOS_5 */
#endif /* IP_RECVIF */
/* SOPT_SIZE_CMSG_IFINDEX_IPV4 - portable type */
#if defined (SOPT_SIZE_CMSG_PKTINFO)
#define SOPT_SIZE_CMSG_IFINDEX_IPV4() SOPT_SIZE_CMSG_PKTINFO_IPV4()
#elif defined (SOPT_SIZE_CMSG_RECVIF_IPV4)
#define SOPT_SIZE_CMSG_IFINDEX_IPV4() SOPT_SIZE_CMSG_RECVIF_IPV4()
#else /* Nothing available */
#define SOPT_SIZE_CMSG_IFINDEX_IPV4() (sizeof (char *))
#endif /* SOPT_SIZE_CMSG_IFINDEX_IPV4 */
#define SOPT_SIZE_CMSG_IFINDEX(af) \
(((af) == AF_INET) : SOPT_SIZE_CMSG_IFINDEX_IPV4() \
? SOPT_SIZE_CMSG_PKTINFO_IPV6())
extern int setsockopt_multicast_ipv4(int sock, int optname,
struct in_addr if_addr
/* required: interface to join on */,
unsigned int mcast_addr,
unsigned int ifindex
/* optional: if non-zero, may be used
instead of if_addr */);
/* Ask for, and get, ifindex, by whatever method is supported. */
extern int setsockopt_ifindex (int, int, int);
extern int getsockopt_ifindex (int, struct msghdr *);
/* swab the fields in iph between the host order and system order expected
* for IP_HDRINCL.
*/
extern void sockopt_iphdrincl_swab_htosys (struct ip *iph);
extern void sockopt_iphdrincl_swab_systoh (struct ip *iph);
#endif /*_ZEBRA_SOCKOPT_H */
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