415 void tcp_clear_retrans(struct tcp_sock *tp);
424 void tcp_disable_fack(struct tcp_sock *tp);
572 void tcp_skb_mark_lost_uncond_verify(struct tcp_sock *tp, struct sk_buff *skb);
585 static inline int tcp_bound_to_half_wnd(struct tcp_sock *tp, int pktsize)  in tcp_bound_to_half_wnd()  argument
596 	if (tp->max_window >= 512)  in tcp_bound_to_half_wnd()
597 		cutoff = (tp->max_window >> 1);  in tcp_bound_to_half_wnd()
599 		cutoff = tp->max_window;  in tcp_bound_to_half_wnd()
602 		return max_t(int, cutoff, 68U - tp->tcp_header_len);  in tcp_bound_to_half_wnd()
629 static inline u32 __tcp_set_rto(const struct tcp_sock *tp)  in __tcp_set_rto()  argument
631 	return usecs_to_jiffies((tp->srtt_us >> 3) + tp->rttvar_us);  in __tcp_set_rto()
634 static inline void __tcp_fast_path_on(struct tcp_sock *tp, u32 snd_wnd)  in __tcp_fast_path_on()  argument
636 	tp->pred_flags = htonl((tp->tcp_header_len << 26) |  in __tcp_fast_path_on()
641 static inline void tcp_fast_path_on(struct tcp_sock *tp)  in tcp_fast_path_on()  argument
643 	__tcp_fast_path_on(tp, tp->snd_wnd >> tp->rx_opt.snd_wscale);  in tcp_fast_path_on()
648 	struct tcp_sock *tp = tcp_sk(sk);  in tcp_fast_path_check()  local
650 	if (skb_queue_empty(&tp->out_of_order_queue) &&  in tcp_fast_path_check()
651 	    tp->rcv_wnd &&  in tcp_fast_path_check()
653 	    !tp->urg_data)  in tcp_fast_path_check()
654 		tcp_fast_path_on(tp);  in tcp_fast_path_check()
679 static inline u32 tcp_min_rtt(const struct tcp_sock *tp)  in tcp_min_rtt()  argument
681 	return tp->rtt_min[0].rtt;  in tcp_min_rtt()
688 static inline u32 tcp_receive_window(const struct tcp_sock *tp)  in tcp_receive_window()  argument
690 	s32 win = tp->rcv_wup + tp->rcv_wnd - tp->rcv_nxt;  in tcp_receive_window()
893 u32 tcp_slow_start(struct tcp_sock *tp, u32 acked);
894 void tcp_cong_avoid_ai(struct tcp_sock *tp, u32 w, u32 acked);
943 static inline int tcp_is_sack(const struct tcp_sock *tp)  in tcp_is_sack()  argument
945 	return tp->rx_opt.sack_ok;  in tcp_is_sack()
948 static inline bool tcp_is_reno(const struct tcp_sock *tp)  in tcp_is_reno()  argument
950 	return !tcp_is_sack(tp);  in tcp_is_reno()
953 static inline bool tcp_is_fack(const struct tcp_sock *tp)  in tcp_is_fack()  argument
955 	return tp->rx_opt.sack_ok & TCP_FACK_ENABLED;  in tcp_is_fack()
958 static inline void tcp_enable_fack(struct tcp_sock *tp)  in tcp_enable_fack()  argument
960 	tp->rx_opt.sack_ok |= TCP_FACK_ENABLED;  in tcp_enable_fack()
966 static inline void tcp_enable_early_retrans(struct tcp_sock *tp)  in tcp_enable_early_retrans()  argument
968 	tp->do_early_retrans = sysctl_tcp_early_retrans &&  in tcp_enable_early_retrans()
973 static inline void tcp_disable_early_retrans(struct tcp_sock *tp)  in tcp_disable_early_retrans()  argument
975 	tp->do_early_retrans = 0;  in tcp_disable_early_retrans()
978 static inline unsigned int tcp_left_out(const struct tcp_sock *tp)  in tcp_left_out()  argument
980 	return tp->sacked_out + tp->lost_out;  in tcp_left_out()
997 static inline unsigned int tcp_packets_in_flight(const struct tcp_sock *tp)  in tcp_packets_in_flight()  argument
999 	return tp->packets_out - tcp_left_out(tp) + tp->retrans_out;  in tcp_packets_in_flight()
1004 static inline bool tcp_in_slow_start(const struct tcp_sock *tp)  in tcp_in_slow_start()  argument
1006 	return tp->snd_cwnd < tp->snd_ssthresh;  in tcp_in_slow_start()
1009 static inline bool tcp_in_initial_slowstart(const struct tcp_sock *tp)  in tcp_in_initial_slowstart()  argument
1011 	return tp->snd_ssthresh >= TCP_INFINITE_SSTHRESH;  in tcp_in_initial_slowstart()
1026 	const struct tcp_sock *tp = tcp_sk(sk);  in tcp_current_ssthresh()  local
1029 		return tp->snd_ssthresh;  in tcp_current_ssthresh()
1031 		return max(tp->snd_ssthresh,  in tcp_current_ssthresh()
1032 			   ((tp->snd_cwnd >> 1) +  in tcp_current_ssthresh()
1033 			    (tp->snd_cwnd >> 2)));  in tcp_current_ssthresh()
1037 #define tcp_verify_left_out(tp)	WARN_ON(tcp_left_out(tp) > tp->packets_out)  argument
1040 __u32 tcp_init_cwnd(const struct tcp_sock *tp, const struct dst_entry *dst);
1045 static inline __u32 tcp_max_tso_deferred_mss(const struct tcp_sock *tp)  in tcp_max_tso_deferred_mss()  argument
1056 static __inline__ __u32 tcp_max_burst(const struct tcp_sock *tp)  in tcp_max_burst()  argument
1058 	return tp->reordering;  in tcp_max_burst()
1062 static inline u32 tcp_wnd_end(const struct tcp_sock *tp)  in tcp_wnd_end()  argument
1064 	return tp->snd_una + tp->snd_wnd;  in tcp_wnd_end()
1082 	const struct tcp_sock *tp = tcp_sk(sk);  in tcp_is_cwnd_limited()  local
1085 	if (tcp_in_slow_start(tp))  in tcp_is_cwnd_limited()
1086 		return tp->snd_cwnd < 2 * tp->max_packets_out;  in tcp_is_cwnd_limited()
1088 	return tp->is_cwnd_limited;  in tcp_is_cwnd_limited()
1118 static inline void tcp_init_wl(struct tcp_sock *tp, u32 seq)  in tcp_init_wl()  argument
1120 	tp->snd_wl1 = seq;  in tcp_init_wl()
1123 static inline void tcp_update_wl(struct tcp_sock *tp, u32 seq)  in tcp_update_wl()  argument
1125 	tp->snd_wl1 = seq;  in tcp_update_wl()
1150 static inline void tcp_prequeue_init(struct tcp_sock *tp)  in tcp_prequeue_init()  argument
1152 	tp->ucopy.task = NULL;  in tcp_prequeue_init()
1153 	tp->ucopy.len = 0;  in tcp_prequeue_init()
1154 	tp->ucopy.memory = 0;  in tcp_prequeue_init()
1155 	skb_queue_head_init(&tp->ucopy.prequeue);  in tcp_prequeue_init()
1184 	struct tcp_sock *tp = tcp_sk(sk);  in tcp_slow_start_after_idle_check()  local
1187 	if (!sysctl_tcp_slow_start_after_idle || tp->packets_out)  in tcp_slow_start_after_idle_check()
1189 	delta = tcp_time_stamp - tp->lsndtime;  in tcp_slow_start_after_idle_check()
1224 static inline int keepalive_intvl_when(const struct tcp_sock *tp)  in keepalive_intvl_when()  argument
1226 	return tp->keepalive_intvl ? : sysctl_tcp_keepalive_intvl;  in keepalive_intvl_when()
1229 static inline int keepalive_time_when(const struct tcp_sock *tp)  in keepalive_time_when()  argument
1231 	return tp->keepalive_time ? : sysctl_tcp_keepalive_time;  in keepalive_time_when()
1234 static inline int keepalive_probes(const struct tcp_sock *tp)  in keepalive_probes()  argument
1236 	return tp->keepalive_probes ? : sysctl_tcp_keepalive_probes;  in keepalive_probes()
1239 static inline u32 keepalive_time_elapsed(const struct tcp_sock *tp)  in keepalive_time_elapsed()  argument
1241 	const struct inet_connection_sock *icsk = &tp->inet_conn;  in keepalive_time_elapsed()
1244 			  tcp_time_stamp - tp->rcv_tstamp);  in keepalive_time_elapsed()
1311 static inline void tcp_clear_retrans_hints_partial(struct tcp_sock *tp)  in tcp_clear_retrans_hints_partial()  argument
1313 	tp->lost_skb_hint = NULL;  in tcp_clear_retrans_hints_partial()
1316 static inline void tcp_clear_all_retrans_hints(struct tcp_sock *tp)  in tcp_clear_all_retrans_hints()  argument
1318 	tcp_clear_retrans_hints_partial(tp);  in tcp_clear_all_retrans_hints()
1319 	tp->retransmit_skb_hint = NULL;  in tcp_clear_all_retrans_hints()
1430 void tcp_free_fastopen_req(struct tcp_sock *tp);
1575 		struct tcp_sock *tp = tcp_sk(sk);  in tcp_push_pending_frames()  local
1577 		__tcp_push_pending_frames(sk, tcp_current_mss(sk), tp->nonagle);  in tcp_push_pending_frames()
1585 static inline u32 tcp_highest_sack_seq(struct tcp_sock *tp)  in tcp_highest_sack_seq()  argument
1587 	if (!tp->sacked_out)  in tcp_highest_sack_seq()
1588 		return tp->snd_una;  in tcp_highest_sack_seq()
1590 	if (tp->highest_sack == NULL)  in tcp_highest_sack_seq()
1591 		return tp->snd_nxt;  in tcp_highest_sack_seq()
1593 	return TCP_SKB_CB(tp->highest_sack)->seq;  in tcp_highest_sack_seq()
1624 static inline bool tcp_stream_is_thin(struct tcp_sock *tp)  in tcp_stream_is_thin()  argument
1626 	return tp->packets_out < 4 && !tcp_in_initial_slowstart(tp);  in tcp_stream_is_thin()
1668 static inline u32 tcp_notsent_lowat(const struct tcp_sock *tp)  in tcp_notsent_lowat()  argument
1670 	return tp->notsent_lowat ?: sysctl_tcp_notsent_lowat;  in tcp_notsent_lowat()
1675 	const struct tcp_sock *tp = tcp_sk(sk);  in tcp_stream_memory_free()  local
1676 	u32 notsent_bytes = tp->write_seq - tp->snd_nxt;  in tcp_stream_memory_free()
1678 	return notsent_bytes < tcp_notsent_lowat(tp);  in tcp_stream_memory_free()
1766 extern void tcp_rack_advance(struct tcp_sock *tp,