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xfrm: Const'ify address args to hash helpers.

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Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2011-02-24 00:33:19 -05:00
parent 183cad1278
commit 5f803b58cd
2 changed files with 26 additions and 15 deletions
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32
net/xfrm/xfrm_hash.h
View File

@ -4,29 +4,32 @@
#include <linux/xfrm.h>
#include <linux/socket.h>
static inline unsigned int __xfrm4_addr_hash(xfrm_address_t *addr)
static inline unsigned int __xfrm4_addr_hash(const xfrm_address_t *addr)
{
return ntohl(addr->a4);
}
static inline unsigned int __xfrm6_addr_hash(xfrm_address_t *addr)
static inline unsigned int __xfrm6_addr_hash(const xfrm_address_t *addr)
{
return ntohl(addr->a6[2] ^ addr->a6[3]);
}
static inline unsigned int __xfrm4_daddr_saddr_hash(xfrm_address_t *daddr, xfrm_address_t *saddr)
static inline unsigned int __xfrm4_daddr_saddr_hash(const xfrm_address_t *daddr,
const xfrm_address_t *saddr)
{
u32 sum = (__force u32)daddr->a4 + (__force u32)saddr->a4;
return ntohl((__force __be32)sum);
}
static inline unsigned int __xfrm6_daddr_saddr_hash(xfrm_address_t *daddr, xfrm_address_t *saddr)
static inline unsigned int __xfrm6_daddr_saddr_hash(const xfrm_address_t *daddr,
const xfrm_address_t *saddr)
{
return ntohl(daddr->a6[2] ^ daddr->a6[3] ^
saddr->a6[2] ^ saddr->a6[3]);
}
static inline unsigned int __xfrm_dst_hash(xfrm_address_t *daddr, xfrm_address_t *saddr,
static inline unsigned int __xfrm_dst_hash(const xfrm_address_t *daddr,
const xfrm_address_t *saddr,
u32 reqid, unsigned short family,
unsigned int hmask)
{
@ -42,8 +45,8 @@ 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 *daddr,
xfrm_address_t *saddr,
static inline unsigned __xfrm_src_hash(const xfrm_address_t *daddr,
const xfrm_address_t *saddr,
unsigned short family,
unsigned int hmask)
{
@ -60,8 +63,8 @@ static inline unsigned __xfrm_src_hash(xfrm_address_t *daddr,
}
static inline unsigned int
__xfrm_spi_hash(xfrm_address_t *daddr, __be32 spi, u8 proto, unsigned short family,
unsigned int hmask)
__xfrm_spi_hash(const xfrm_address_t *daddr, __be32 spi, u8 proto,
unsigned short family, unsigned int hmask)
{
unsigned int h = (__force u32)spi ^ proto;
switch (family) {
@ -80,10 +83,11 @@ static inline unsigned int __idx_hash(u32 index, unsigned int hmask)
return (index ^ (index >> 8)) & hmask;
}
static inline unsigned int __sel_hash(struct xfrm_selector *sel, unsigned short family, unsigned int hmask)
static inline unsigned int __sel_hash(const struct xfrm_selector *sel,
unsigned short family, unsigned int hmask)
{
xfrm_address_t *daddr = &sel->daddr;
xfrm_address_t *saddr = &sel->saddr;
const xfrm_address_t *daddr = &sel->daddr;
const xfrm_address_t *saddr = &sel->saddr;
unsigned int h = 0;
switch (family) {
@ -107,7 +111,9 @@ static inline unsigned int __sel_hash(struct xfrm_selector *sel, unsigned short
return h & hmask;
}
static inline unsigned int __addr_hash(xfrm_address_t *daddr, xfrm_address_t *saddr, unsigned short family, unsigned int hmask)
static inline unsigned int __addr_hash(const xfrm_address_t *daddr,
const xfrm_address_t *saddr,
unsigned short family, unsigned int hmask)
{
unsigned int h = 0;

9
net/xfrm/xfrm_policy.c
View File

@ -311,7 +311,9 @@ static inline unsigned int idx_hash(struct net *net, u32 index)
return __idx_hash(index, net->xfrm.policy_idx_hmask);
}
static struct hlist_head *policy_hash_bysel(struct net *net, struct xfrm_selector *sel, unsigned short family, int dir)
static struct hlist_head *policy_hash_bysel(struct net *net,
const struct xfrm_selector *sel,
unsigned short family, int dir)
{
unsigned int hmask = net->xfrm.policy_bydst[dir].hmask;
unsigned int hash = __sel_hash(sel, family, hmask);
@ -321,7 +323,10 @@ static struct hlist_head *policy_hash_bysel(struct net *net, struct xfrm_selecto
net->xfrm.policy_bydst[dir].table + hash);
}
static struct hlist_head *policy_hash_direct(struct net *net, xfrm_address_t *daddr, xfrm_address_t *saddr, unsigned short family, int dir)
static struct hlist_head *policy_hash_direct(struct net *net,
const xfrm_address_t *daddr,
const xfrm_address_t *saddr,
unsigned short family, int dir)
{
unsigned int hmask = net->xfrm.policy_bydst[dir].hmask;
unsigned int hash = __addr_hash(daddr, saddr, family, hmask);