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authorYasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>2005-09-19 15:34:40 -0700
committerDavid S. Miller <davem@davemloft.net>2005-09-19 15:34:40 -0700
commite674d0f38de6109b59dbe30fba8b296a03229b8e (patch)
tree459271f7cef6319dfa7ca9ab050269c98e551994 /include
parent926b50f92a30090da2c1a8675de954c2d9b09732 (diff)
downloadop-kernel-dev-e674d0f38de6109b59dbe30fba8b296a03229b8e.zip
op-kernel-dev-e674d0f38de6109b59dbe30fba8b296a03229b8e.tar.gz
[NETFILTER] ip6tables: remove duplicate code
Some IPv6 matches have very similar loops to find IPv6 extension header and we can unify them. This patch introduces ipv6_find_hdr() to do it. I just checked that it can find the target headers in the packet which has dst,hbh,rt,frag,ah,esp headers. Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp> Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/linux/netfilter_ipv6/ip6_tables.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/netfilter_ipv6/ip6_tables.h b/include/linux/netfilter_ipv6/ip6_tables.h
index 58c72a5..59f70b3 100644
--- a/include/linux/netfilter_ipv6/ip6_tables.h
+++ b/include/linux/netfilter_ipv6/ip6_tables.h
@@ -455,6 +455,9 @@ extern unsigned int ip6t_do_table(struct sk_buff **pskb,
/* Check for an extension */
extern int ip6t_ext_hdr(u8 nexthdr);
+/* find specified header and get offset to it */
+extern int ipv6_find_hdr(const struct sk_buff *skb, unsigned int *offset,
+ u8 target);
#define IP6T_ALIGN(s) (((s) + (__alignof__(struct ip6t_entry)-1)) & ~(__alignof__(struct ip6t_entry)-1))
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