From e05c82d3666119075615fdbf6abca0266344f27b Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sun, 18 Sep 2011 21:02:55 -0400 Subject: [PATCH] tcp: fix build error if !CONFIG_SYN_COOKIES commit 946cedccbd7387 (tcp: Change possible SYN flooding messages) added a build error if CONFIG_SYN_COOKIES=n Reported-by: Markus Trippelsdorf Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/net/tcp.h | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-) diff --git a/include/net/tcp.h b/include/net/tcp.h index e9b48b094683..acc620a4a45f 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -431,17 +431,34 @@ extern int tcp_disconnect(struct sock *sk, int flags); extern __u32 syncookie_secret[2][16-4+SHA_DIGEST_WORDS]; 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(struct sock *sk, struct sk_buff *skb, __u16 *mss); +#else +static inline __u32 cookie_v4_init_sequence(struct sock *sk, + struct sk_buff *skb, + __u16 *mss) +{ + return 0; +} +#endif extern __u32 cookie_init_timestamp(struct request_sock *req); extern bool cookie_check_timestamp(struct tcp_options_received *opt, bool *); /* From net/ipv6/syncookies.c */ extern struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb); +#ifdef CONFIG_SYN_COOKIES extern __u32 cookie_v6_init_sequence(struct sock *sk, struct sk_buff *skb, __u16 *mss); - +#else +static inline __u32 cookie_v6_init_sequence(struct sock *sk, + struct sk_buff *skb, + __u16 *mss) +{ + return 0; +} +#endif /* tcp_output.c */ extern void __tcp_push_pending_frames(struct sock *sk, unsigned int cur_mss, -- 2.39.5