diff options
| author | YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> | 2013-03-15 10:51:58 +0100 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2013-03-15 11:02:04 +0100 |
| commit | 2d2fd8c50a28b82481d193dca1c373907ea70965 (patch) | |
| tree | 287080fa845cf7262ba9761fcbe3964fa3cafb55 /net/ipv6/netfilter | |
| parent | 1e32b0c65c9e3f1a09cb5d1bcc0c5becf849d85f (diff) | |
netfilter: ip6t_NPT: Use csum_partial()
[ Some fixes went into mainstream before this patch, so I needed
to rebase it upon the current tree, that's why it's different from
the original one posted on the list --pablo ]
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/ipv6/netfilter')
| -rw-r--r-- | net/ipv6/netfilter/ip6t_NPT.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/net/ipv6/netfilter/ip6t_NPT.c b/net/ipv6/netfilter/ip6t_NPT.c index 83acc1405a18..59286a1de850 100644 --- a/net/ipv6/netfilter/ip6t_NPT.c +++ b/net/ipv6/netfilter/ip6t_NPT.c @@ -18,9 +18,8 @@ static int ip6t_npt_checkentry(const struct xt_tgchk_param *par) { struct ip6t_npt_tginfo *npt = par->targinfo; - __wsum src_sum = 0, dst_sum = 0; struct in6_addr pfx; - unsigned int i; + __wsum src_sum, dst_sum; if (npt->src_pfx_len > 64 || npt->dst_pfx_len > 64) return -EINVAL; @@ -33,12 +32,8 @@ static int ip6t_npt_checkentry(const struct xt_tgchk_param *par) if (!ipv6_addr_equal(&pfx, &npt->dst_pfx.in6)) return -EINVAL; - for (i = 0; i < ARRAY_SIZE(npt->src_pfx.in6.s6_addr16); i++) { - src_sum = csum_add(src_sum, - (__force __wsum)npt->src_pfx.in6.s6_addr16[i]); - dst_sum = csum_add(dst_sum, - (__force __wsum)npt->dst_pfx.in6.s6_addr16[i]); - } + src_sum = csum_partial(&npt->src_pfx.in6, sizeof(npt->src_pfx.in6), 0); + dst_sum = csum_partial(&npt->dst_pfx.in6, sizeof(npt->dst_pfx.in6), 0); npt->adjustment = ~csum_fold(csum_sub(src_sum, dst_sum)); return 0; |