195 __u32 cookie_v4_init_sequence(struct sock *sk, const struct sk_buff *skb,  in cookie_v4_init_sequence()  argument
201 	tcp_synq_overflow(sk);  in cookie_v4_init_sequence()
202 	NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_SYNCOOKIESSENT);  in cookie_v4_init_sequence()
222 static struct sock *get_cookie_sock(struct sock *sk, struct sk_buff *skb,  in get_cookie_sock()  argument
226 	struct inet_connection_sock *icsk = inet_csk(sk);  in get_cookie_sock()
229 	child = icsk->icsk_af_ops->syn_recv_sock(sk, skb, req, dst);  in get_cookie_sock()
232 		inet_csk_reqsk_queue_add(sk, req, child);  in get_cookie_sock()
291 struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb)  in cookie_v4_check()  argument
297 	struct tcp_sock *tp = tcp_sk(sk);  in cookie_v4_check()
300 	struct sock *ret = sk;  in cookie_v4_check()
310 	if (tcp_synq_no_recent_overflow(sk))  in cookie_v4_check()
315 		NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_SYNCOOKIESFAILED);  in cookie_v4_check()
319 	NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_SYNCOOKIESRECV);  in cookie_v4_check()
329 	req = inet_reqsk_alloc(&tcp_request_sock_ops, sk); /* for safety */  in cookie_v4_check()
342 	ireq->ir_mark		= inet_request_mark(sk, skb);  in cookie_v4_check()
351 	ireq->ir_iif = sk->sk_bound_dev_if;  in cookie_v4_check()
358 	if (security_inet_conn_request(sk, skb, req)) {  in cookie_v4_check()
371 	flowi4_init_output(&fl4, sk->sk_bound_dev_if, ireq->ir_mark,  in cookie_v4_check()
372 			   RT_CONN_FLAGS(sk), RT_SCOPE_UNIVERSE, IPPROTO_TCP,  in cookie_v4_check()
373 			   inet_sk_flowi_flags(sk),  in cookie_v4_check()
377 	rt = ip_route_output_key(sock_net(sk), &fl4);  in cookie_v4_check()
386 	tcp_select_initial_window(tcp_full_space(sk), req->mss,  in cookie_v4_check()
392 	ireq->ecn_ok = cookie_ecn_ok(&tcp_opt, sock_net(sk), &rt->dst);  in cookie_v4_check()
394 	ret = get_cookie_sock(sk, skb, req, &rt->dst);  in cookie_v4_check()