| Message ID | 1478782676-9770-16-git-send-email-kadlec@blackhole.kfki.hu |
|---|---|
| State | Accepted |
| Delegated to: | Pablo Neira |
| Headers | show |
diff --git a/net/netfilter/ipset/ip_set_hash_gen.h b/net/netfilter/ipset/ip_set_hash_gen.h index 6c88c20..34f115f 100644 --- a/net/netfilter/ipset/ip_set_hash_gen.h +++ b/net/netfilter/ipset/ip_set_hash_gen.h @@ -260,8 +260,14 @@ struct net_prefixes { #endif #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
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> --- net/netfilter/ipset/ip_set_hash_gen.h | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-)