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[NETFILTER]: xt_hashlimit: remove ip6tables module dependency

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Switch from ipv6_find_hdr to ipv6_skip_exthdr to avoid pulling in ip6_tables
and ipv6 when only using it for IPv4.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy 2007-12-04 23:51:48 -08:00 committed by David S. Miller
parent 17dfc93f6d
commit 193b23c5a0
1 changed files with 5 additions and 3 deletions
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8
net/netfilter/xt_hashlimit.c
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@ -21,6 +21,7 @@
#include <linux/in.h>
#include <linux/ip.h>
#include <linux/ipv6.h>
#include <net/ipv6.h>
#include <net/net_namespace.h>
#include <linux/netfilter/x_tables.h>
@ -379,7 +380,7 @@ hashlimit_init_dst(const struct xt_hashlimit_htable *hinfo,
const struct sk_buff *skb, unsigned int protoff)
{
__be16 _ports[2], *ports;
int nexthdr;
u8 nexthdr;
memset(dst, 0, sizeof(*dst));
@ -407,8 +408,9 @@ hashlimit_init_dst(const struct xt_hashlimit_htable *hinfo,
if (!(hinfo->cfg.mode &
(XT_HASHLIMIT_HASH_DPT | XT_HASHLIMIT_HASH_SPT)))
return 0;
nexthdr = ipv6_find_hdr(skb, &protoff, -1, NULL);
if (nexthdr < 0)
nexthdr = ipv6_hdr(skb)->nexthdr;
protoff = ipv6_skip_exthdr(skb, sizeof(struct ipv6hdr), &nexthdr);
if ((int)protoff < 0)
return -1;
break;
#endif