Commit e05c82d3 authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller

tcp: fix build error if !CONFIG_SYN_COOKIES

commit 946cedcc (tcp: Change possible SYN flooding messages)
added a build error if CONFIG_SYN_COOKIES=n
Reported-by: default avatarMarkus Trippelsdorf <markus@trippelsdorf.de>
Signed-off-by: default avatarEric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b0e7031a
...@@ -431,17 +431,34 @@ extern int tcp_disconnect(struct sock *sk, int flags); ...@@ -431,17 +431,34 @@ extern int tcp_disconnect(struct sock *sk, int flags);
extern __u32 syncookie_secret[2][16-4+SHA_DIGEST_WORDS]; extern __u32 syncookie_secret[2][16-4+SHA_DIGEST_WORDS];
extern struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb, extern struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb,
struct ip_options *opt); struct ip_options *opt);
#ifdef CONFIG_SYN_COOKIES
extern __u32 cookie_v4_init_sequence(struct sock *sk, struct sk_buff *skb, extern __u32 cookie_v4_init_sequence(struct sock *sk, struct sk_buff *skb,
__u16 *mss); __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 __u32 cookie_init_timestamp(struct request_sock *req);
extern bool cookie_check_timestamp(struct tcp_options_received *opt, bool *); extern bool cookie_check_timestamp(struct tcp_options_received *opt, bool *);
/* From net/ipv6/syncookies.c */ /* From net/ipv6/syncookies.c */
extern struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb); 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, extern __u32 cookie_v6_init_sequence(struct sock *sk, struct sk_buff *skb,
__u16 *mss); __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 */ /* tcp_output.c */
extern void __tcp_push_pending_frames(struct sock *sk, unsigned int cur_mss, extern void __tcp_push_pending_frames(struct sock *sk, unsigned int cur_mss,
......
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