extern int sysctl_tcp_workaround_signed_windows;
extern int sysctl_tcp_slow_start_after_idle;
extern int sysctl_tcp_max_ssthresh;
-extern int sysctl_tcp_cookie_size;
extern int sysctl_tcp_thin_linear_timeouts;
extern int sysctl_tcp_thin_dupack;
extern int sysctl_tcp_early_retrans;
extern int tcp_sendpage(struct sock *sk, struct page *page, int offset,
size_t size, int flags);
extern void tcp_release_cb(struct sock *sk);
+extern void tcp_wfree(struct sk_buff *skb);
extern void tcp_write_timer_handler(struct sock *sk);
extern void tcp_delack_timer_handler(struct sock *sk);
extern int tcp_ioctl(struct sock *sk, int cmd, unsigned long arg);