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netfilter: xt_sctp: use WORD_ROUND macro to calculate length of multiple of 4 bytes

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Use  WORD_ROUND to round an int up to the next multiple of 4.

Signed-off-by: Shan Wei <shanwei@cn.fujitsu.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
This commit is contained in:
Shan Wei 2010-06-09 14:47:40 +02:00 committed by Patrick McHardy
parent b3c5163fe0
commit 2bf0748254
1 changed files with 2 additions and 1 deletions
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3
net/netfilter/xt_sctp.c
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@ -3,6 +3,7 @@
#include <linux/skbuff.h>
#include <net/ip.h>
#include <net/ipv6.h>
#include <net/sctp/sctp.h>
#include <linux/sctp.h>
#include <linux/netfilter/x_tables.h>
@ -67,7 +68,7 @@ match_packet(const struct sk_buff *skb,
++i, offset, sch->type, htons(sch->length),
sch->flags);
#endif
offset += (ntohs(sch->length) + 3) & ~3;
offset += WORD_ROUND(ntohs(sch->length));
pr_debug("skb->len: %d\toffset: %d\n", skb->len, offset);