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in lib/zebra.h, ensure that RFC3542-required CMSG_SPACE and CMSG_LEN are defined. Warn if alignment assumptions are made, since they are i386-centric. in lib/sockopt.h, declare that sockopt sizes are without CMSG_SPACE-required padding - just simple sizeof. in ospfd/ospf_packet.c, simply use CMSG_SPACE This should remove all instances of CMSG_ALIGN from the source code. This is a nonstandard, though rational, construct; quagga should use only those defines in RFC3542.
98 lines
3.4 KiB
C
98 lines
3.4 KiB
C
/* Router advertisement
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* Copyright (C) 1999 Kunihiro Ishiguro
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*
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* This file is part of GNU Zebra.
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*
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* GNU Zebra is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* GNU Zebra is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Zebra; see the file COPYING. If not, write to the Free
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* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*/
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#ifndef _ZEBRA_SOCKOPT_H
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#define _ZEBRA_SOCKOPT_H
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int setsockopt_so_recvbuf (int sock, int size);
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#ifdef HAVE_IPV6
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int setsockopt_ipv6_pktinfo (int, int);
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int setsockopt_ipv6_checksum (int, int);
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int setsockopt_ipv6_multicast_hops (int, int);
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int setsockopt_ipv6_unicast_hops (int, int);
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int setsockopt_ipv6_hoplimit (int, int);
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int setsockopt_ipv6_multicast_loop (int, int);
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#endif /* HAVE_IPV6 */
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/*
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* It is OK to reference in6_pktinfo here without a protecting #if
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* because this macro will only be used #if HAVE_IPV6, and in6_pktinfo
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* is not optional for HAVE_IPV6.
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*/
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#define SOPT_SIZE_CMSG_PKTINFO_IPV6() (sizeof (struct in6_pktinfo));
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/*
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* Size defines for control messages used to get ifindex. We define
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* values for each method, and define a macro that can be used by code
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* that is unaware of which method is in use.
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* These values are without any alignment needed (see CMSG_SPACE in RFC3542).
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*/
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#if defined (IP_PKTINFO)
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/* Linux in_pktinfo. */
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#define SOPT_SIZE_CMSG_PKTINFO_IPV4() (CMSG_SPACE(sizeof (struct in_pktinfo)))
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/* XXX This should perhaps be defined even if IP_PKTINFO is not. */
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#define SOPT_SIZE_CMSG_PKTINFO(af) \
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((af == AF_INET) ? SOPT_SIZE_CMSG_PKTINFO_IPV4() \
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: SOPT_SIZE_CMSG_PKTINFO_IPV6()
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#endif /* IP_PKTINFO */
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#if defined (IP_RECVIF)
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/* BSD/Solaris */
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#if defined (SUNOS_5)
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#define SOPT_SIZE_CMSG_RECVIF_IPV4() (sizeof (uint_t))
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#else
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#define SOPT_SIZE_CMSG_RECVIF_IPV4() (sizeof (struct sockaddr_dl))
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#endif /* SUNOS_5 */
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#endif /* IP_RECVIF */
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/* SOPT_SIZE_CMSG_IFINDEX_IPV4 - portable type */
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#if defined (SOPT_SIZE_CMSG_PKTINFO)
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#define SOPT_SIZE_CMSG_IFINDEX_IPV4() SOPT_SIZE_CMSG_PKTINFO_IPV4()
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#elif defined (SOPT_SIZE_CMSG_RECVIF_IPV4)
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#define SOPT_SIZE_CMSG_IFINDEX_IPV4() SOPT_SIZE_CMSG_RECVIF_IPV4()
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#else /* Nothing available */
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#define SOPT_SIZE_CMSG_IFINDEX_IPV4() (sizeof (char *))
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#endif /* SOPT_SIZE_CMSG_IFINDEX_IPV4 */
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#define SOPT_SIZE_CMSG_IFINDEX(af) \
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(((af) == AF_INET) : SOPT_SIZE_CMSG_IFINDEX_IPV4() \
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? SOPT_SIZE_CMSG_PKTINFO_IPV6())
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int setsockopt_multicast_ipv4(int sock,
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int optname,
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struct in_addr if_addr,
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unsigned int mcast_addr,
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unsigned int ifindex);
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/* Ask for, and get, ifindex, by whatever method is supported. */
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int setsockopt_ifindex (int, int, int);
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int getsockopt_ifindex (int, struct msghdr *);
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/* swab the fields in iph between the host order and system order expected
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* for IP_HDRINCL.
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*/
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void sockopt_iphdrincl_swab_htosys (struct ip *iph);
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void sockopt_iphdrincl_swab_systoh (struct ip *iph);
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#endif /*_ZEBRA_SOCKOPT_H */
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