From 2575b65434d56559bd03854450b9b6aaf19b9c90 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Thu, 24 Aug 2006 03:26:44 -0700 Subject: [XFRM]: Simplify xfrm_spi_hash It can use __xfrm{4,6}_addr_hash(). Signed-off-by: David S. Miller --- net/xfrm/xfrm_state.c | 33 +++++++++------------------------ 1 file changed, 9 insertions(+), 24 deletions(-) (limited to 'net/xfrm') diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c index 7e5daafc1863..98200397e098 100644 --- a/net/xfrm/xfrm_state.c +++ b/net/xfrm/xfrm_state.c @@ -107,35 +107,20 @@ static inline unsigned xfrm_src_hash(xfrm_address_t *addr, unsigned short family return __xfrm_src_hash(addr, family, xfrm_state_hmask); } -static inline unsigned int __xfrm4_spi_hash(xfrm_address_t *addr, u32 spi, u8 proto, - unsigned int hmask) -{ - unsigned int h; - h = ntohl(addr->a4^spi^proto); - h = (h ^ (h>>10) ^ (h>>20)) & hmask; - return h; -} - -static inline unsigned int __xfrm6_spi_hash(xfrm_address_t *addr, u32 spi, u8 proto, - unsigned int hmask) -{ - unsigned int h; - h = ntohl(addr->a6[2]^addr->a6[3]^spi^proto); - h = (h ^ (h>>10) ^ (h>>20)) & hmask; - return h; -} - -static inline -unsigned __xfrm_spi_hash(xfrm_address_t *addr, u32 spi, u8 proto, unsigned short family, - unsigned int hmask) +static inline unsigned int +__xfrm_spi_hash(xfrm_address_t *addr, u32 spi, u8 proto, unsigned short family, + unsigned int hmask) { + unsigned int h = spi ^ proto; switch (family) { case AF_INET: - return __xfrm4_spi_hash(addr, spi, proto, hmask); + h ^= __xfrm4_addr_hash(addr); + break; case AF_INET6: - return __xfrm6_spi_hash(addr, spi, proto, hmask); + h ^= __xfrm6_addr_hash(addr); + break; } - return 0; /*XXX*/ + return (h ^ (h >> 10) ^ (h >> 20)) & hmask; } static inline unsigned int -- cgit v1.2.1