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Allows other than IA_PEER addresses on PtP ifaces on BSD.

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Also fixes a potential problem with link-local dest_addrs
for IA_PEER addresses.

Thanks to Alexander V. Chernikov for the suggestion.
This commit is contained in:
Ondrej Zajicek 2013-09-22 19:15:39 +02:00
parent e550a37206
commit f515e22924
1 changed files with 15 additions and 11 deletions
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26
sysdep/bsd/krt-sock.c
View file

@ -676,22 +676,18 @@ krt_read_addr(struct ks_msg *msg)
#ifdef IPV6
/* Clean up embedded interface ID returned in link-local address */
if (ipa_has_link_scope(ifa.ip))
_I0(ifa.ip) = 0xfe800000;
if (ipa_has_link_scope(ifa.brd))
_I0(ifa.brd) = 0xfe800000;
#endif
#ifdef IPV6
/* Why not the same check also for IPv4? */
if ((iface->flags & IF_MULTIACCESS) || (masklen != BITS_PER_IP_ADDRESS))
#else
if (iface->flags & IF_MULTIACCESS)
#endif
if (masklen < BITS_PER_IP_ADDRESS)
{
ifa.prefix = ipa_and(ifa.ip, ipa_mkmask(masklen));
if (masklen == BITS_PER_IP_ADDRESS)
ifa.flags |= IA_HOST;
if (masklen == (BITS_PER_IP_ADDRESS - 1))
ifa.opposite = ipa_opposite_m1(ifa.ip);
@ -699,11 +695,19 @@ krt_read_addr(struct ks_msg *msg)
if (masklen == (BITS_PER_IP_ADDRESS - 2))
ifa.opposite = ipa_opposite_m2(ifa.ip);
#endif
if (!(iface->flags & IF_MULTIACCESS))
ifa.opposite = ifa.brd;
}
else /* PtP iface */
else if (!(iface->flags & IF_MULTIACCESS) && ipa_nonzero(ifa.brd))
{
ifa.flags |= IA_PEER;
ifa.prefix = ifa.opposite = ifa.brd;
ifa.flags |= IA_PEER;
}
else
{
ifa.prefix = ifa.ip;
ifa.flags |= IA_HOST;
}
if (new)