60 	struct illinois *ca = inet_csk_ca(sk);  in rtt_reset()  local
62 	ca->end_seq = tp->snd_nxt;  in rtt_reset()
63 	ca->cnt_rtt = 0;  in rtt_reset()
64 	ca->sum_rtt = 0;  in rtt_reset()
71 	struct illinois *ca = inet_csk_ca(sk);  in tcp_illinois_init()  local
73 	ca->alpha = ALPHA_MAX;  in tcp_illinois_init()
74 	ca->beta = BETA_BASE;  in tcp_illinois_init()
75 	ca->base_rtt = 0x7fffffff;  in tcp_illinois_init()
76 	ca->max_rtt = 0;  in tcp_illinois_init()
78 	ca->acked = 0;  in tcp_illinois_init()
79 	ca->rtt_low = 0;  in tcp_illinois_init()
80 	ca->rtt_above = 0;  in tcp_illinois_init()
88 	struct illinois *ca = inet_csk_ca(sk);  in tcp_illinois_acked()  local
91 	ca->acked = sample->pkts_acked;  in tcp_illinois_acked()
102 	if (ca->base_rtt > rtt_us)  in tcp_illinois_acked()
103 		ca->base_rtt = rtt_us;  in tcp_illinois_acked()
106 	if (ca->max_rtt < rtt_us)  in tcp_illinois_acked()
107 		ca->max_rtt = rtt_us;  in tcp_illinois_acked()
109 	++ca->cnt_rtt;  in tcp_illinois_acked()
110 	ca->sum_rtt += rtt_us;  in tcp_illinois_acked()
114 static inline u32 max_delay(const struct illinois *ca)  in max_delay()  argument
116 	return ca->max_rtt - ca->base_rtt;  in max_delay()
120 static inline u32 avg_delay(const struct illinois *ca)  in avg_delay()  argument
122 	u64 t = ca->sum_rtt;  in avg_delay()
124 	do_div(t, ca->cnt_rtt);  in avg_delay()
125 	return t - ca->base_rtt;  in avg_delay()
140 static u32 alpha(struct illinois *ca, u32 da, u32 dm)  in alpha()  argument
146 		if (!ca->rtt_above)  in alpha()
152 		if (++ca->rtt_low < theta)  in alpha()
153 			return ca->alpha;  in alpha()
155 		ca->rtt_low = 0;  in alpha()
156 		ca->rtt_above = 0;  in alpha()
160 	ca->rtt_above = 1;  in alpha()
225 	struct illinois *ca = inet_csk_ca(sk);  in update_params()  local
228 		ca->alpha = ALPHA_BASE;  in update_params()
229 		ca->beta = BETA_BASE;  in update_params()
230 	} else if (ca->cnt_rtt > 0) {  in update_params()
231 		u32 dm = max_delay(ca);  in update_params()
232 		u32 da = avg_delay(ca);  in update_params()
234 		ca->alpha = alpha(ca, da, dm);  in update_params()
235 		ca->beta = beta(da, dm);  in update_params()
246 	struct illinois *ca = inet_csk_ca(sk);  in tcp_illinois_state()  local
249 		ca->alpha = ALPHA_BASE;  in tcp_illinois_state()
250 		ca->beta = BETA_BASE;  in tcp_illinois_state()
251 		ca->rtt_low = 0;  in tcp_illinois_state()
252 		ca->rtt_above = 0;  in tcp_illinois_state()
263 	struct illinois *ca = inet_csk_ca(sk);  in tcp_illinois_cong_avoid()  local
265 	if (after(ack, ca->end_seq))  in tcp_illinois_cong_avoid()
280 		tp->snd_cwnd_cnt += ca->acked;  in tcp_illinois_cong_avoid()
281 		ca->acked = 1;  in tcp_illinois_cong_avoid()
286 		delta = (tp->snd_cwnd_cnt * ca->alpha) >> ALPHA_SHIFT;  in tcp_illinois_cong_avoid()
298 	struct illinois *ca = inet_csk_ca(sk);  in tcp_illinois_ssthresh()  local
302 	decr = (tcp_snd_cwnd(tp) * ca->beta) >> BETA_SHIFT;  in tcp_illinois_ssthresh()
310 	const struct illinois *ca = inet_csk_ca(sk);  in tcp_illinois_info()  local
314 		info->vegas.tcpv_rttcnt = ca->cnt_rtt;  in tcp_illinois_info()
315 		info->vegas.tcpv_minrtt = ca->base_rtt;  in tcp_illinois_info()
319 			u64 t = ca->sum_rtt;  in tcp_illinois_info()