diff options
| author |   Patrick McHardy <kaber@trash.net> | 2006-08-22 00:33:09 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@sunset.davemloft.net> | 2006-09-22 14:55:29 -0700 |
| commit | da878c8e5aae3eeceeee7af8d52633d7bc125edf (patch) | |
| tree | 27f67c9713e98919e5c38d6cc85a05e9485576e9 /net/ipv4/netfilter/ipt_TTL.c | |
| parent | [NETFILTER]: nfnetlink_queue: fix typo in error message (diff) | |
| download | linux-dev-da878c8e5aae3eeceeee7af8d52633d7bc125edf.tar.xz linux-dev-da878c8e5aae3eeceeee7af8d52633d7bc125edf.zip | |
[NETFILTER]: replace open coded checksum updates
Replace open coded checksum update by nf_csum_update calls and clean up
the surrounding code a bit.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
| -rw-r--r-- | net/ipv4/netfilter/ipt_TTL.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/net/ipv4/netfilter/ipt_TTL.c b/net/ipv4/netfilter/ipt_TTL.c index f48892ae0be5..2afb2a8aa8c5 100644 --- a/net/ipv4/netfilter/ipt_TTL.c +++ b/net/ipv4/netfilter/ipt_TTL.c @@ -27,7 +27,6 @@ ipt_ttl_target(struct sk_buff **pskb, { struct iphdr *iph; const struct ipt_TTL_info *info = targinfo; - u_int16_t diffs[2]; int new_ttl; if (!skb_make_writable(pskb, (*pskb)->len)) @@ -55,12 +54,10 @@ ipt_ttl_target(struct sk_buff **pskb, } if (new_ttl != iph->ttl) { - diffs[0] = htons(((unsigned)iph->ttl) << 8) ^ 0xFFFF; + iph->check = nf_csum_update((iph->ttl << 8) ^ 0xFFFF, + new_ttl << 8, + iph->check); iph->ttl = new_ttl; - diffs[1] = htons(((unsigned)iph->ttl) << 8); - iph->check = csum_fold(csum_partial((char *)diffs, - sizeof(diffs), - iph->check^0xFFFF)); } return IPT_CONTINUE; |