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[XFRM] STATE: Use destination address for src hash.

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Src hash is introduced for Mobile IPv6 route optimization usage.
On current kenrel code it is calculated with source address only.
It results we uses the same hash value for outbound state (when
the node has only one address for Mobile IPv6).
This patch use also destination address as peer information for
src hash to be dispersed.

Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Masahide NAKAMURA
2006-10-03 15:56:09 -07:00
committed by David S. Miller
parent c5e29460f5
commit 667bbcb6c0
2 changed files with 13 additions and 10 deletions
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7
net/xfrm/xfrm_hash.h
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@@ -41,17 +41,18 @@ static inline unsigned int __xfrm_dst_hash(xfrm_address_t *daddr, xfrm_address_t
return (h ^ (h >> 16)) & hmask;
}
static inline unsigned __xfrm_src_hash(xfrm_address_t *saddr,
static inline unsigned __xfrm_src_hash(xfrm_address_t *daddr,
xfrm_address_t *saddr,
unsigned short family,
unsigned int hmask)
{
unsigned int h = family;
switch (family) {
case AF_INET:
h ^= __xfrm4_addr_hash(saddr);
h ^= __xfrm4_daddr_saddr_hash(daddr, saddr);
break;
case AF_INET6:
h ^= __xfrm6_addr_hash(saddr);
h ^= __xfrm6_daddr_saddr_hash(daddr, saddr);
break;
};
return (h ^ (h >> 16)) & hmask;