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netfilter: ipset: Make sure element data size is a multiple of u32

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Data for hashing required to be array of u32. Make sure that
element data always multiple of u32.

Ported from a patch proposed by Sergey Popovich <popovich_sergei@mail.ua>.

Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
This commit is contained in:
Jozsef Kadlecsik 2015-06-26 11:16:28 +02:00
parent cee8b97b6c
commit 5a902e6d4b
1 changed files with 8 additions and 2 deletions
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10
net/netfilter/ipset/ip_set_hash_gen.h
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@ -260,8 +260,14 @@ htable_bits(u32 hashsize)
#endif #endif
#define HKEY(data, initval, htable_bits) \ #define HKEY(data, initval, htable_bits) \
(jhash2((u32 *)(data), HKEY_DATALEN / sizeof(u32), initval) \ ({ \
& jhash_mask(htable_bits)) const u32 *__k = (const u32 *)data; \
u32 __l = HKEY_DATALEN / sizeof(u32); \
\
BUILD_BUG_ON(HKEY_DATALEN % sizeof(u32) != 0); \
\
jhash2(__k, __l, initval) & jhash_mask(htable_bits); \
})
#ifndef htype #ifndef htype
#ifndef HTYPE #ifndef HTYPE