Date: Tue, 29 Jan 2013 10:54:50 +0000 (UTC) From: "Andrey V. Elsukov" <ae@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r246068 - user/ae/inet6/sys/netinet6 Message-ID: <201301291054.r0TAsoLP067155@svn.freebsd.org>
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Author: ae Date: Tue Jan 29 10:54:50 2013 New Revision: 246068 URL: http://svnweb.freebsd.org/changeset/base/246068 Log: Add in6_srcaddrscope function. It returns scope of specified address and will be used in the source address selection algorithm. Modified: user/ae/inet6/sys/netinet6/in6_src.c Modified: user/ae/inet6/sys/netinet6/in6_src.c ============================================================================== --- user/ae/inet6/sys/netinet6/in6_src.c Tue Jan 29 10:46:47 2013 (r246067) +++ user/ae/inet6/sys/netinet6/in6_src.c Tue Jan 29 10:54:50 2013 (r246068) @@ -143,6 +143,7 @@ static int walk_addrsel_policy(int (*)(s void *); static int dump_addrsel_policyent(struct in6_addrpolicy *, void *); static struct in6_addrpolicy *match_addrsel_policy(struct sockaddr_in6 *); +static int in6_srcaddrscope(const struct in6_addr *); /* * Return an IPv6 address, which is the most appropriate for a given @@ -1175,3 +1176,20 @@ match_addrsel_policy(struct sockaddr_in6 return (bestpol); } + +/* + * This function is similar to in6_addrscope, but has some difference, + * specific for the source address selection algorithm (RFC 6724). + */ +static int +in6_srcaddrscope(const struct in6_addr *addr) +{ + + /* 169.254/16 and 127/8 have link-local scope */ + if (IN6_IS_ADDR_V4MAPPED(addr)) { + if (addr->s6_addr[12] == 127 || ( + addr->s6_addr[12] == 169 && addr->s6_addr[13] == 254)) + return (IPV6_ADDR_SCOPE_LINKLOCAL); + } + return (in6_addrscope(addr)); +}
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