415 void tcp_clear_retrans(struct tcp_sock *tp);
424 void tcp_disable_fack(struct tcp_sock *tp);
556 static inline int tcp_bound_to_half_wnd(struct tcp_sock *tp, int pktsize)  in tcp_bound_to_half_wnd()  argument
567 	if (tp->max_window >= 512)  in tcp_bound_to_half_wnd()
568 		cutoff = (tp->max_window >> 1);  in tcp_bound_to_half_wnd()
570 		cutoff = tp->max_window;  in tcp_bound_to_half_wnd()
573 		return max_t(int, cutoff, 68U - tp->tcp_header_len);  in tcp_bound_to_half_wnd()
600 static inline u32 __tcp_set_rto(const struct tcp_sock *tp)  in __tcp_set_rto()  argument
602 	return usecs_to_jiffies((tp->srtt_us >> 3) + tp->rttvar_us);  in __tcp_set_rto()
605 static inline void __tcp_fast_path_on(struct tcp_sock *tp, u32 snd_wnd)  in __tcp_fast_path_on()  argument
607 	tp->pred_flags = htonl((tp->tcp_header_len << 26) |  in __tcp_fast_path_on()
612 static inline void tcp_fast_path_on(struct tcp_sock *tp)  in tcp_fast_path_on()  argument
614 	__tcp_fast_path_on(tp, tp->snd_wnd >> tp->rx_opt.snd_wscale);  in tcp_fast_path_on()
619 	struct tcp_sock *tp = tcp_sk(sk);  in tcp_fast_path_check()  local
621 	if (skb_queue_empty(&tp->out_of_order_queue) &&  in tcp_fast_path_check()
622 	    tp->rcv_wnd &&  in tcp_fast_path_check()
624 	    !tp->urg_data)  in tcp_fast_path_check()
625 		tcp_fast_path_on(tp);  in tcp_fast_path_check()
653 static inline u32 tcp_receive_window(const struct tcp_sock *tp)  in tcp_receive_window()  argument
655 	s32 win = tp->rcv_wup + tp->rcv_wnd - tp->rcv_nxt;  in tcp_receive_window()
853 u32 tcp_slow_start(struct tcp_sock *tp, u32 acked);
854 void tcp_cong_avoid_ai(struct tcp_sock *tp, u32 w, u32 acked);
903 static inline int tcp_is_sack(const struct tcp_sock *tp)  in tcp_is_sack()  argument
905 	return tp->rx_opt.sack_ok;  in tcp_is_sack()
908 static inline bool tcp_is_reno(const struct tcp_sock *tp)  in tcp_is_reno()  argument
910 	return !tcp_is_sack(tp);  in tcp_is_reno()
913 static inline bool tcp_is_fack(const struct tcp_sock *tp)  in tcp_is_fack()  argument
915 	return tp->rx_opt.sack_ok & TCP_FACK_ENABLED;  in tcp_is_fack()
918 static inline void tcp_enable_fack(struct tcp_sock *tp)  in tcp_enable_fack()  argument
920 	tp->rx_opt.sack_ok |= TCP_FACK_ENABLED;  in tcp_enable_fack()
926 static inline void tcp_enable_early_retrans(struct tcp_sock *tp)  in tcp_enable_early_retrans()  argument
928 	tp->do_early_retrans = sysctl_tcp_early_retrans &&  in tcp_enable_early_retrans()
933 static inline void tcp_disable_early_retrans(struct tcp_sock *tp)  in tcp_disable_early_retrans()  argument
935 	tp->do_early_retrans = 0;  in tcp_disable_early_retrans()
938 static inline unsigned int tcp_left_out(const struct tcp_sock *tp)  in tcp_left_out()  argument
940 	return tp->sacked_out + tp->lost_out;  in tcp_left_out()
957 static inline unsigned int tcp_packets_in_flight(const struct tcp_sock *tp)  in tcp_packets_in_flight()  argument
959 	return tp->packets_out - tcp_left_out(tp) + tp->retrans_out;  in tcp_packets_in_flight()
964 static inline bool tcp_in_initial_slowstart(const struct tcp_sock *tp)  in tcp_in_initial_slowstart()  argument
966 	return tp->snd_ssthresh >= TCP_INFINITE_SSTHRESH;  in tcp_in_initial_slowstart()
981 	const struct tcp_sock *tp = tcp_sk(sk);  in tcp_current_ssthresh()  local
984 		return tp->snd_ssthresh;  in tcp_current_ssthresh()
986 		return max(tp->snd_ssthresh,  in tcp_current_ssthresh()
987 			   ((tp->snd_cwnd >> 1) +  in tcp_current_ssthresh()
988 			    (tp->snd_cwnd >> 2)));  in tcp_current_ssthresh()
992 #define tcp_verify_left_out(tp)	WARN_ON(tcp_left_out(tp) > tp->packets_out)  argument
995 __u32 tcp_init_cwnd(const struct tcp_sock *tp, const struct dst_entry *dst);
1000 static inline __u32 tcp_max_tso_deferred_mss(const struct tcp_sock *tp)  in tcp_max_tso_deferred_mss()  argument
1011 static __inline__ __u32 tcp_max_burst(const struct tcp_sock *tp)  in tcp_max_burst()  argument
1013 	return tp->reordering;  in tcp_max_burst()
1017 static inline u32 tcp_wnd_end(const struct tcp_sock *tp)  in tcp_wnd_end()  argument
1019 	return tp->snd_una + tp->snd_wnd;  in tcp_wnd_end()
1037 	const struct tcp_sock *tp = tcp_sk(sk);  in tcp_is_cwnd_limited()  local
1040 	if (tp->snd_cwnd <= tp->snd_ssthresh)  in tcp_is_cwnd_limited()
1041 		return tp->snd_cwnd < 2 * tp->max_packets_out;  in tcp_is_cwnd_limited()
1043 	return tp->is_cwnd_limited;  in tcp_is_cwnd_limited()
1048 	const struct tcp_sock *tp = tcp_sk(sk);  in tcp_check_probe_timer()  local
1051 	if (!tp->packets_out && !icsk->icsk_pending)  in tcp_check_probe_timer()
1056 static inline void tcp_init_wl(struct tcp_sock *tp, u32 seq)  in tcp_init_wl()  argument
1058 	tp->snd_wl1 = seq;  in tcp_init_wl()
1061 static inline void tcp_update_wl(struct tcp_sock *tp, u32 seq)  in tcp_update_wl()  argument
1063 	tp->snd_wl1 = seq;  in tcp_update_wl()
1088 static inline void tcp_prequeue_init(struct tcp_sock *tp)  in tcp_prequeue_init()  argument
1090 	tp->ucopy.task = NULL;  in tcp_prequeue_init()
1091 	tp->ucopy.len = 0;  in tcp_prequeue_init()
1092 	tp->ucopy.memory = 0;  in tcp_prequeue_init()
1093 	skb_queue_head_init(&tp->ucopy.prequeue);  in tcp_prequeue_init()
1148 static inline int keepalive_intvl_when(const struct tcp_sock *tp)  in keepalive_intvl_when()  argument
1150 	return tp->keepalive_intvl ? : sysctl_tcp_keepalive_intvl;  in keepalive_intvl_when()
1153 static inline int keepalive_time_when(const struct tcp_sock *tp)  in keepalive_time_when()  argument
1155 	return tp->keepalive_time ? : sysctl_tcp_keepalive_time;  in keepalive_time_when()
1158 static inline int keepalive_probes(const struct tcp_sock *tp)  in keepalive_probes()  argument
1160 	return tp->keepalive_probes ? : sysctl_tcp_keepalive_probes;  in keepalive_probes()
1163 static inline u32 keepalive_time_elapsed(const struct tcp_sock *tp)  in keepalive_time_elapsed()  argument
1165 	const struct inet_connection_sock *icsk = &tp->inet_conn;  in keepalive_time_elapsed()
1168 			  tcp_time_stamp - tp->rcv_tstamp);  in keepalive_time_elapsed()
1235 static inline void tcp_clear_retrans_hints_partial(struct tcp_sock *tp)  in tcp_clear_retrans_hints_partial()  argument
1237 	tp->lost_skb_hint = NULL;  in tcp_clear_retrans_hints_partial()
1240 static inline void tcp_clear_all_retrans_hints(struct tcp_sock *tp)  in tcp_clear_all_retrans_hints()  argument
1242 	tcp_clear_retrans_hints_partial(tp);  in tcp_clear_all_retrans_hints()
1243 	tp->retransmit_skb_hint = NULL;  in tcp_clear_all_retrans_hints()
1354 void tcp_free_fastopen_req(struct tcp_sock *tp);
1499 		struct tcp_sock *tp = tcp_sk(sk);  in tcp_push_pending_frames()  local
1501 		__tcp_push_pending_frames(sk, tcp_current_mss(sk), tp->nonagle);  in tcp_push_pending_frames()
1509 static inline u32 tcp_highest_sack_seq(struct tcp_sock *tp)  in tcp_highest_sack_seq()  argument
1511 	if (!tp->sacked_out)  in tcp_highest_sack_seq()
1512 		return tp->snd_una;  in tcp_highest_sack_seq()
1514 	if (tp->highest_sack == NULL)  in tcp_highest_sack_seq()
1515 		return tp->snd_nxt;  in tcp_highest_sack_seq()
1517 	return TCP_SKB_CB(tp->highest_sack)->seq;  in tcp_highest_sack_seq()
1548 static inline bool tcp_stream_is_thin(struct tcp_sock *tp)  in tcp_stream_is_thin()  argument
1550 	return tp->packets_out < 4 && !tcp_in_initial_slowstart(tp);  in tcp_stream_is_thin()
1594 static inline u32 tcp_notsent_lowat(const struct tcp_sock *tp)  in tcp_notsent_lowat()  argument
1596 	return tp->notsent_lowat ?: sysctl_tcp_notsent_lowat;  in tcp_notsent_lowat()
1601 	const struct tcp_sock *tp = tcp_sk(sk);  in tcp_stream_memory_free()  local
1602 	u32 notsent_bytes = tp->write_seq - tp->snd_nxt;  in tcp_stream_memory_free()
1604 	return notsent_bytes < tcp_notsent_lowat(tp);  in tcp_stream_memory_free()