From 0198230b7705eb2386e53778d944e307eef0cc71 Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Tue, 27 Aug 2013 08:50:13 +0200 Subject: net: syncookies: export cookie_v4_init_sequence/cookie_v4_check Extract the local TCP stack independant parts of tcp_v4_init_sequence() and cookie_v4_check() and export them for use by the upcoming SYNPROXY target. Signed-off-by: Patrick McHardy Acked-by: David S. Miller Tested-by: Martin Topholm Signed-off-by: Jesper Dangaard Brouer Signed-off-by: Pablo Neira Ayuso --- include/net/tcp.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/net/tcp.h') diff --git a/include/net/tcp.h b/include/net/tcp.h index 09cb5c11ceea..8e2b63678a83 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -476,9 +476,13 @@ void inet_sk_rx_dst_set(struct sock *sk, const struct sk_buff *skb); /* From syncookies.c */ extern __u32 syncookie_secret[2][16-4+SHA_DIGEST_WORDS]; +extern int __cookie_v4_check(const struct iphdr *iph, const struct tcphdr *th, + u32 cookie); extern struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb, struct ip_options *opt); #ifdef CONFIG_SYN_COOKIES +extern u32 __cookie_v4_init_sequence(const struct iphdr *iph, + const struct tcphdr *th, u16 *mssp); extern __u32 cookie_v4_init_sequence(struct sock *sk, struct sk_buff *skb, __u16 *mss); #else -- cgit v1.2.3