86 static void	newreno_cb_destroy(struct cc_var *ccv);
87 static void	newreno_ack_received(struct cc_var *ccv, ccsignal_t type);
88 static void	newreno_after_idle(struct cc_var *ccv);
89 static void	newreno_cong_signal(struct cc_var *ccv, ccsignal_t type);
90 static int newreno_ctl_output(struct cc_var *ccv, struct sockopt *sopt, void *buf);
91 static void	newreno_newround(struct cc_var *ccv, uint32_t round_cnt);
92 static void	newreno_rttsample(struct cc_var *ccv, uint32_t usec_rtt, uint32_t rxtcnt, uint32_t fas);
93 static 	int	newreno_cb_init(struct cc_var *ccv, void *);
117 newreno_log_hystart_event(struct cc_var *ccv, struct newreno *nreno, uint8_t mod, uint32_t flex1)  in newreno_log_hystart_event()  argument
138 	tp = ccv->tp;  in newreno_log_hystart_event()
158 		log.u_bbr.pkt_epoch = ccv->flags;  in newreno_log_hystart_event()
174 newreno_cb_init(struct cc_var *ccv, void *ptr)  in newreno_cb_init()  argument
178 	INP_WLOCK_ASSERT(tptoinpcb(ccv->tp));  in newreno_cb_init()
180 		ccv->cc_data = malloc(sizeof(struct newreno), M_CC_MEM, M_NOWAIT);  in newreno_cb_init()
181 		if (ccv->cc_data == NULL)  in newreno_cb_init()
184 		ccv->cc_data = ptr;  in newreno_cb_init()
185 	nreno = (struct newreno *)ccv->cc_data;  in newreno_cb_init()
209 newreno_cb_destroy(struct cc_var *ccv)  in newreno_cb_destroy()  argument
211 	free(ccv->cc_data, M_CC_MEM);  in newreno_cb_destroy()
215 newreno_ack_received(struct cc_var *ccv, ccsignal_t type)  in newreno_ack_received()  argument
218 	uint32_t mss = tcp_fixed_maxseg(ccv->tp);  in newreno_ack_received()
220 	nreno = ccv->cc_data;  in newreno_ack_received()
221 	if (type == CC_ACK && !IN_RECOVERY(CCV(ccv, t_flags)) &&  in newreno_ack_received()
222 	    (ccv->flags & CCF_CWND_LIMITED)) {  in newreno_ack_received()
223 		u_int cw = CCV(ccv, snd_cwnd);  in newreno_ack_received()
253 		if (cw > CCV(ccv, snd_ssthresh)) {  in newreno_ack_received()
263 				newreno_log_hystart_event(ccv, nreno, 11, CCV(ccv, snd_ssthresh));  in newreno_ack_received()
266 				if (ccv->flags & CCF_ABC_SENTAWND)  in newreno_ack_received()
267 					ccv->flags &= ~CCF_ABC_SENTAWND;  in newreno_ack_received()
285 			if (ccv->flags & CCF_USE_LOCAL_ABC)  in newreno_ack_received()
286 				abc_val = ccv->labc;  in newreno_ack_received()
289 			if ((ccv->flags & CCF_HYSTART_ALLOWED) &&  in newreno_ack_received()
308 					newreno_log_hystart_event(ccv, nreno, 1, rtt_thresh);  in newreno_ack_received()
322 						newreno_log_hystart_event(ccv, nreno, 2, rtt_thresh);  in newreno_ack_received()
326 			if (CCV(ccv, snd_nxt) == CCV(ccv, snd_max))  in newreno_ack_received()
327 				incr = min(ccv->bytes_this_ack,  in newreno_ack_received()
328 				    ccv->nsegs * abc_val * mss);  in newreno_ack_received()
330 				incr = min(ccv->bytes_this_ack, mss);  in newreno_ack_received()
335 				newreno_log_hystart_event(ccv, nreno, 3, incr);  in newreno_ack_received()
340 			CCV(ccv, snd_cwnd) = min(cw + incr,  in newreno_ack_received()
341 			    TCP_MAXWIN << CCV(ccv, snd_scale));  in newreno_ack_received()
346 newreno_after_idle(struct cc_var *ccv)  in newreno_after_idle()  argument
350 	nreno = ccv->cc_data;  in newreno_after_idle()
351 	newreno_cc_after_idle(ccv);  in newreno_after_idle()
358 		newreno_log_hystart_event(ccv, nreno, 12, CCV(ccv, snd_ssthresh));  in newreno_after_idle()
366 newreno_cong_signal(struct cc_var *ccv, ccsignal_t type)  in newreno_cong_signal()  argument
371 	cwin = CCV(ccv, snd_cwnd);  in newreno_cong_signal()
372 	mss = tcp_fixed_maxseg(ccv->tp);  in newreno_cong_signal()
373 	nreno = ccv->cc_data;  in newreno_cong_signal()
402 			newreno_log_hystart_event(ccv, nreno, 10, CCV(ccv, snd_ssthresh));  in newreno_cong_signal()
404 		if (!IN_FASTRECOVERY(CCV(ccv, t_flags))) {  in newreno_cong_signal()
405 			if (IN_CONGRECOVERY(CCV(ccv, t_flags) &&  in newreno_cong_signal()
407 				CCV(ccv, snd_ssthresh) =  in newreno_cong_signal()
408 				    ((uint64_t)CCV(ccv, snd_ssthresh) *  in newreno_cong_signal()
411 			if (!IN_CONGRECOVERY(CCV(ccv, t_flags)))  in newreno_cong_signal()
412 				CCV(ccv, snd_ssthresh) = cwin;  in newreno_cong_signal()
413 			ENTER_RECOVERY(CCV(ccv, t_flags));  in newreno_cong_signal()
421 			newreno_log_hystart_event(ccv, nreno, 9, CCV(ccv, snd_ssthresh));  in newreno_cong_signal()
423 		if (!IN_CONGRECOVERY(CCV(ccv, t_flags))) {  in newreno_cong_signal()
424 			CCV(ccv, snd_ssthresh) = cwin;  in newreno_cong_signal()
425 			CCV(ccv, snd_cwnd) = cwin;  in newreno_cong_signal()
426 			ENTER_CONGRECOVERY(CCV(ccv, t_flags));  in newreno_cong_signal()
430 		if (CCV(ccv, t_rxtshift) == 1) {  in newreno_cong_signal()
432 				pipe = tcp_compute_pipe(ccv->tp);  in newreno_cong_signal()
434 				pipe = CCV(ccv, snd_max) -  in newreno_cong_signal()
435 					CCV(ccv, snd_fack) +  in newreno_cong_signal()
436 					CCV(ccv, sackhint.sack_bytes_rexmit);  in newreno_cong_signal()
438 			CCV(ccv, snd_ssthresh) = max(2,  in newreno_cong_signal()
439 				((uint64_t)min(CCV(ccv, snd_wnd), pipe) *  in newreno_cong_signal()
443 		CCV(ccv, snd_cwnd) = mss;  in newreno_cong_signal()
451 newreno_ctl_output(struct cc_var *ccv, struct sockopt *sopt, void *buf)  in newreno_ctl_output()  argument
459 	if (CC_ALGO(ccv->tp) != &newreno_cc_algo)  in newreno_ctl_output()
462 	nreno = (struct newreno *)ccv->cc_data;  in newreno_ctl_output()
518 newreno_newround(struct cc_var *ccv, uint32_t round_cnt)  in newreno_newround()  argument
522 	nreno = (struct newreno *)ccv->cc_data;  in newreno_newround()
531 		if (ccv->flags & CCF_HYSTART_CAN_SH_CWND) {  in newreno_newround()
538 			if (ccv->flags & CCF_HYSTART_CONS_SSTH) {  in newreno_newround()
539 				CCV(ccv, snd_ssthresh) = ((nreno->css_lowrtt_fas + nreno->css_fas_at_css_entry) / 2);  in newreno_newround()
541 				CCV(ccv, snd_ssthresh) = nreno->css_lowrtt_fas;  in newreno_newround()
543 			CCV(ccv, snd_cwnd) = nreno->css_fas_at_css_entry;  in newreno_newround()
546 			CCV(ccv, snd_ssthresh) = CCV(ccv, snd_cwnd);  in newreno_newround()
552 		newreno_log_hystart_event(ccv, nreno, 6, CCV(ccv, snd_ssthresh));  in newreno_newround()
555 		newreno_log_hystart_event(ccv, nreno, 4, round_cnt);  in newreno_newround()
559 newreno_rttsample(struct cc_var *ccv, uint32_t usec_rtt, uint32_t rxtcnt, uint32_t fas)  in newreno_rttsample()  argument
563 	nreno = (struct newreno *)ccv->cc_data;  in newreno_rttsample()
585 		newreno_log_hystart_event(ccv, nreno, 8, nreno->css_baseline_minrtt);  in newreno_rttsample()
589 		newreno_log_hystart_event(ccv, nreno, 5, usec_rtt);  in newreno_rttsample()