Differential D8225 Diff 21575 sys/netinet/cc/cc_chd.c

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sys/netinet/cc/cc_chd.c

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}		}

static void		static void
chd_cong_signal(struct cc_var *ccv, uint32_t signal_type)		chd_cong_signal(struct cc_var *ccv, uint32_t signal_type)
{		{
struct ertt *e_t;		struct ertt *e_t;
struct chd *chd_data;		struct chd *chd_data;
int qdly;		int qdly;
		uint32_t cwin;
		u_int mss;

e_t = khelp_get_osd(CCV(ccv, osd), ertt_id);		e_t = khelp_get_osd(CCV(ccv, osd), ertt_id);
chd_data = ccv->cc_data;		chd_data = ccv->cc_data;
qdly = imax(e_t->rtt, chd_data->maxrtt_in_rtt) - e_t->minrtt;		qdly = imax(e_t->rtt, chd_data->maxrtt_in_rtt) - e_t->minrtt;
		cwin = CCV(ccv, snd_cwnd);
		mss = CCV(ccv, t_maxseg);

switch(signal_type) {		switch(signal_type) {
case CC_CHD_DELAY:		case CC_CHD_DELAY:
chd_window_decrease(ccv); /* Set new ssthresh. */		chd_window_decrease(ccv); /* Set new ssthresh. */
CCV(ccv, snd_cwnd) = CCV(ccv, snd_ssthresh);		CCV(ccv, snd_cwnd) = CCV(ccv, snd_ssthresh);
CCV(ccv, snd_recover) = CCV(ccv, snd_max);		CCV(ccv, snd_recover) = CCV(ccv, snd_max);
ENTER_CONGRECOVERY(CCV(ccv, t_flags));		ENTER_CONGRECOVERY(CCV(ccv, t_flags));
break;		break;
Show All 22 Lines	if (!IN_RECOVERY(CCV(ccv, t_flags)) && qdly > V_chd_qthresh) {
CCV(ccv, snd_recover) = CCV(ccv, snd_max);		CCV(ccv, snd_recover) = CCV(ccv, snd_max);
}		}

if (chd_data->shadow_w > 0) {		if (chd_data->shadow_w > 0) {
chd_data->shadow_w = max(chd_data->shadow_w /		chd_data->shadow_w = max(chd_data->shadow_w /
CCV(ccv, t_maxseg) / 2, 2) * CCV(ccv, t_maxseg);		CCV(ccv, t_maxseg) / 2, 2) * CCV(ccv, t_maxseg);
}		}
ENTER_FASTRECOVERY(CCV(ccv, t_flags));		ENTER_FASTRECOVERY(CCV(ccv, t_flags));
		break;
		case CC_RTO:
		CCV(ccv, snd_ssthresh) = max(2*mss, cwin/2);
		CCV(ccv, snd_cwnd) = mss;
break;		break;

default:		default:
newreno_cc_algo.cong_signal(ccv, signal_type);		newreno_cc_algo.cong_signal(ccv, signal_type);
}		}
}		}

static void		static void
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