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netfilter: xt_hashlimit: Fix link error in 32bit arch because of 64bit division 

Division of 64bit integers will cause linker error undefined reference
to `__udivdi3'. Fix this by replacing divisions with div64_64

Fixes: 11d5f15723 ("netfilter: xt_hashlimit: Create revision 2 to ...")
Signed-off-by: Vishwanath Pai <vpai@akamai.com>
Acked-by: Maciej Żenczykowski <maze@google.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Vishwanath Pai 2016-09-29 13:39:50 -04:00 committed by Pablo Neira Ayuso
parent 7816ec564e
commit 1f827f5138
1 changed files with 8 additions and 7 deletions
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15
net/netfilter/xt_hashlimit.c
View File

@ -467,17 +467,18 @@ static u64 user2credits(u64 user, int revision)
/* If multiplying would overflow... */
if (user > 0xFFFFFFFF / (HZ*CREDITS_PER_JIFFY_v1))
/* Divide first. */
return (user / XT_HASHLIMIT_SCALE) *\
HZ * CREDITS_PER_JIFFY_v1;
return div64_u64(user, XT_HASHLIMIT_SCALE)
* HZ * CREDITS_PER_JIFFY_v1;
return (user * HZ * CREDITS_PER_JIFFY_v1) \
/ XT_HASHLIMIT_SCALE;
return div64_u64(user * HZ * CREDITS_PER_JIFFY_v1,
XT_HASHLIMIT_SCALE);
} else {
if (user > 0xFFFFFFFFFFFFFFFF / (HZ*CREDITS_PER_JIFFY))
return (user / XT_HASHLIMIT_SCALE_v2) *\
HZ * CREDITS_PER_JIFFY;
return div64_u64(user, XT_HASHLIMIT_SCALE_v2)
* HZ * CREDITS_PER_JIFFY;
return (user * HZ * CREDITS_PER_JIFFY) / XT_HASHLIMIT_SCALE_v2;
return div64_u64(user * HZ * CREDITS_PER_JIFFY,
XT_HASHLIMIT_SCALE_v2);
}
}