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authorDave Johnson <djohnson@sw.starentnetworks.com>2007-07-31 04:19:31 +0400
committerDavid S. Miller <davem@sunset.davemloft.net>2007-07-31 13:28:21 +0400
commitc61a7d10efbd187ab9bb54871238ebd1dfcacd44 (patch)
tree287c054f014d36394551fb26517da5dd8beaa938 /net/ipv6/addrconf_core.c
parent0773192b0f8914222cd27e682c49f978a6c7860a (diff)
downloadlinux-c61a7d10efbd187ab9bb54871238ebd1dfcacd44.tar.xz
[IPV6]: ipv6_addr_type() doesn't know about RFC4193 addresses.
ipv6_addr_type() doesn't check for 'Unique Local IPv6 Unicast Addresses' (RFC4193) and returns IPV6_ADDR_RESERVED for that range. SCTP uses this function and will fail bind() and connect() calls that use RFC4193 addresses, SCTP will also ignore inbound connections from RFC4193 addresses if listening on IPV6_ADDR_ANY. There may be other users of ipv6_addr_type() that could also have problems. Signed-off-by: Dave Johnson <djohnson@sw.starentnetworks.com> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/addrconf_core.c')
-rw-r--r--net/ipv6/addrconf_core.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/ipv6/addrconf_core.c b/net/ipv6/addrconf_core.c
index faaefb692298..3f82e9542eda 100644
--- a/net/ipv6/addrconf_core.c
+++ b/net/ipv6/addrconf_core.c
@@ -50,6 +50,9 @@ int __ipv6_addr_type(const struct in6_addr *addr)
if ((st & htonl(0xFFC00000)) == htonl(0xFEC00000))
return (IPV6_ADDR_SITELOCAL | IPV6_ADDR_UNICAST |
IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_SITELOCAL)); /* addr-select 3.1 */
+ if ((st & htonl(0xFE000000)) == htonl(0xFC000000))
+ return (IPV6_ADDR_UNICAST |
+ IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_GLOBAL)); /* RFC 4193 */
if ((addr->s6_addr32[0] | addr->s6_addr32[1]) == 0) {
if (addr->s6_addr32[2] == 0) {