Fix xfrm hash collisions by changing __xfrm4_daddr_saddr_hash to hash addresses with addition
This patch fixes hash collisions in cases where number of entries have incrementing IP source and destination addresses from single respective subnets (i.e. 192.168.0.1-172.16.0.1, 192.168.0.2-172.16.0.2, and so on.). Signed-off-by: Jussi Maki <joamaki@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -16,7 +16,7 @@ static inline unsigned int __xfrm6_addr_hash(xfrm_address_t *addr)
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static inline unsigned int __xfrm4_daddr_saddr_hash(xfrm_address_t *daddr, xfrm_address_t *saddr)
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{
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return ntohl(daddr->a4 ^ saddr->a4);
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return ntohl(daddr->a4 + saddr->a4);
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}
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static inline unsigned int __xfrm6_daddr_saddr_hash(xfrm_address_t *daddr, xfrm_address_t *saddr)
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