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xfrm: use "unsigned int" in __xfrm6_pref_hash() 

x86_64 is zero-extending arch so "unsigned int" is preferred over "int"
for address calculations.

Space savings:

	add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-58 (-58)
	function                                     old     new   delta
	xfrm_hash_resize                            2752    2743      -9
	policy_hash_bysel                            985     973     -12
	policy_hash_direct                          1036     999     -37

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Alexey Dobriyan 2017-03-24 01:53:09 +03:00 committed by Steffen Klassert
parent 1560875600
commit d7f6946630
1 changed files with 2 additions and 2 deletions
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4
net/xfrm/xfrm_hash.h
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@ -54,8 +54,8 @@ static inline unsigned int __xfrm4_dpref_spref_hash(const xfrm_address_t *daddr,
static inline unsigned int __xfrm6_pref_hash(const xfrm_address_t *addr,
__u8 prefixlen)
{
int pdw;
int pbi;
unsigned int pdw;
unsigned int pbi;
u32 initval = 0;
pdw = prefixlen >> 5; /* num of whole u32 in prefix */