81 static void dctcp_reset(const struct tcp_sock *tp, struct dctcp *ca)  in dctcp_reset()  argument
83 	ca->next_seq = tp->snd_nxt;  in dctcp_reset()
85 	ca->old_delivered = tp->delivered;  in dctcp_reset()
86 	ca->old_delivered_ce = tp->delivered_ce;  in dctcp_reset()
96 		struct dctcp *ca = inet_csk_ca(sk);  in dctcp_init()  local
98 		ca->prior_rcv_nxt = tp->rcv_nxt;  in dctcp_init()
100 		ca->dctcp_alpha = min(dctcp_alpha_on_init, DCTCP_MAX_ALPHA);  in dctcp_init()
102 		ca->loss_cwnd = 0;  in dctcp_init()
103 		ca->ce_state = 0;  in dctcp_init()
105 		dctcp_reset(tp, ca);  in dctcp_init()
106 		tcp_plb_init(sk, &ca->plb);  in dctcp_init()
120 	struct dctcp *ca = inet_csk_ca(sk);  in dctcp_ssthresh()  local
123 	ca->loss_cwnd = tcp_snd_cwnd(tp);  in dctcp_ssthresh()
124 	return max(tcp_snd_cwnd(tp) - ((tcp_snd_cwnd(tp) * ca->dctcp_alpha) >> 11U), 2U);  in dctcp_ssthresh()
130 	struct dctcp *ca = inet_csk_ca(sk);  in dctcp_update_alpha()  local
133 	if (!before(tp->snd_una, ca->next_seq)) {  in dctcp_update_alpha()
134 		u32 delivered = tp->delivered - ca->old_delivered;  in dctcp_update_alpha()
135 		u32 delivered_ce = tp->delivered_ce - ca->old_delivered_ce;  in dctcp_update_alpha()
136 		u32 alpha = ca->dctcp_alpha;  in dctcp_update_alpha()
148 			tcp_plb_update_state(sk, &ca->plb, (int)ce_ratio);  in dctcp_update_alpha()
149 			tcp_plb_check_rehash(sk, &ca->plb);  in dctcp_update_alpha()
169 		WRITE_ONCE(ca->dctcp_alpha, alpha);  in dctcp_update_alpha()
170 		dctcp_reset(tp, ca);  in dctcp_update_alpha()
176 	struct dctcp *ca = inet_csk_ca(sk);  in dctcp_react_to_loss()  local
179 	ca->loss_cwnd = tcp_snd_cwnd(tp);  in dctcp_react_to_loss()
195 	struct dctcp *ca = inet_csk_ca(sk);  in dctcp_cwnd_event()  local
200 		dctcp_ece_ack_update(sk, ev, &ca->prior_rcv_nxt, &ca->ce_state);  in dctcp_cwnd_event()
203 		tcp_plb_update_state_upon_rto(sk, &ca->plb);  in dctcp_cwnd_event()
207 		tcp_plb_check_rehash(sk, &ca->plb); /* Maybe rehash when inflight is 0 */  in dctcp_cwnd_event()
218 	const struct dctcp *ca = inet_csk_ca(sk);  in dctcp_get_info()  local
229 			info->dctcp.dctcp_ce_state = (u16) ca->ce_state;  in dctcp_get_info()
230 			info->dctcp.dctcp_alpha = ca->dctcp_alpha;  in dctcp_get_info()
232 						   (tp->delivered_ce - ca->old_delivered_ce);  in dctcp_get_info()
234 						   (tp->delivered - ca->old_delivered);  in dctcp_get_info()
245 	const struct dctcp *ca = inet_csk_ca(sk);  in dctcp_cwnd_undo()  local
248 	return max(tcp_snd_cwnd(tp), ca->loss_cwnd);  in dctcp_cwnd_undo()