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

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

include/net/tcp.h

+18 −1
Original line number Diff line number Diff line
@@ -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,