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[src/trunk]: src/usr.sbin/altq/libaltq libaltq, cbq: convert ns_per_byte to p...
details: https://anonhg.NetBSD.org/src/rev/33343d8701a2
branches: trunk
changeset: 984745:33343d8701a2
user: ozaki-r <ozaki-r%NetBSD.org@localhost>
date: Wed Jul 21 06:36:33 2021 +0000
description:
libaltq, cbq: convert ns_per_byte to ps_per_byte
PR kern/56319
diffstat:
usr.sbin/altq/libaltq/qop_cbq.c | 52 ++++++++++++++++++----------------------
usr.sbin/altq/libaltq/qop_cbq.h | 4 +-
2 files changed, 25 insertions(+), 31 deletions(-)
diffs (146 lines):
diff -r 5036c9af4ee4 -r 33343d8701a2 usr.sbin/altq/libaltq/qop_cbq.c
--- a/usr.sbin/altq/libaltq/qop_cbq.c Wed Jul 21 06:35:44 2021 +0000
+++ b/usr.sbin/altq/libaltq/qop_cbq.c Wed Jul 21 06:36:33 2021 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: qop_cbq.c,v 1.11 2021/07/14 08:32:13 ozaki-r Exp $ */
+/* $NetBSD: qop_cbq.c,v 1.12 2021/07/21 06:36:33 ozaki-r Exp $ */
/* $KAME: qop_cbq.c,v 1.7 2002/05/31 06:03:35 kjc Exp $ */
/*
* Copyright (c) Sun Microsystems, Inc. 1993-1998 All rights reserved.
@@ -78,8 +78,12 @@
#define CTL_PBANDWIDTH 2
#define NS_PER_MS (1000000.0)
#define NS_PER_SEC (NS_PER_MS*1000.0)
+#define PS_PER_MS (1000000000.0)
+#define PS_PER_SEC (PS_PER_MS*1000.0)
#define RM_FILTER_GAIN 5
+#define PSEC_TO_USEC(ps) ((ps) / 1000.0 / 1000.0)
+
#define CBQ_DEVICE "/dev/altq/cbq"
static int cbq_fd = -1;
@@ -484,8 +488,8 @@
if ((cbq_ifinfo = calloc(1, sizeof(*cbq_ifinfo))) == NULL)
return (QOPERR_NOMEM);
- cbq_ifinfo->nsPerByte =
- (1.0 / (double)bandwidth) * NS_PER_SEC * 8;
+ cbq_ifinfo->psPerByte =
+ (1.0 / (double)bandwidth) * PS_PER_SEC * 8;
cbq_ifinfo->is_wrr = is_wrr;
cbq_ifinfo->is_efficient = efficient;
cbq_ifinfo->no_control = no_control;
@@ -768,7 +772,7 @@
{
struct cbq_ifinfo *cbq_ifinfo = ifinfo->private;
double maxq, maxidle_s, maxidle, minidle,
- lofftime, nsPerByte, ptime, cptime;
+ lofftime, psPerByte, ptime, cptime;
double z = (double)(1 << RM_FILTER_GAIN);
double g = (1.0 - 1.0 / z);
double f;
@@ -792,22 +796,12 @@
else if (max_pkt_size > ifinfo->ifmtu)
max_pkt_size = ifinfo->ifmtu;
- nsPerByte = cbq_ifinfo->nsPerByte / f;
- ptime = (double) av_pkt_size * (double)cbq_ifinfo->nsPerByte;
+ psPerByte = cbq_ifinfo->psPerByte / f;
+ ptime = (double) av_pkt_size * (double)cbq_ifinfo->psPerByte;
cptime = ptime * (1.0 - f) / f;
-#if 1 /* ALTQ */
- if (nsPerByte * (double)max_pkt_size > (double)INT_MAX) {
- /*
- * this causes integer overflow in kernel!
- * (bandwidth < 6Kbps when max_pkt_size=1500)
- */
- if (bandwidth != 0)
- LOG(LOG_WARNING, 0, "warning: class is too slow!!");
- nsPerByte = (double)(INT_MAX / max_pkt_size);
- }
-#endif
+
if (maxburst == 0) { /* use default */
- if (cptime > 10.0 * NS_PER_MS)
+ if (cptime > 10.0 * PS_PER_MS)
maxburst = 4;
else
maxburst = 16;
@@ -823,9 +817,9 @@
"cbq_flowspec: maxburst=%d,minburst=%d,pkt_size=%d",
maxburst, minburst, av_pkt_size);
LOG(LOG_DEBUG, 0,
- " nsPerByte=%.2f ns, link's nsPerByte=%.2f, f=%.3f",
- nsPerByte, cbq_ifinfo->nsPerByte, f);
- packet_time = av_pkt_size * (int)nsPerByte / 1000;
+ " psPerByte=%.2f ps, link's psPerByte=%.2f, f=%.3f",
+ psPerByte, cbq_ifinfo->psPerByte, f);
+ packet_time = av_pkt_size * (int)PSEC_TO_USEC(psPerByte);
LOG(LOG_DEBUG, 0,
" packet time=%d [us]\n", packet_time);
if (maxburst * packet_time < 20000) {
@@ -845,21 +839,21 @@
else
maxidle = ptime * maxidle_s;
if (IsDebug(DEBUG_ALTQ))
- LOG(LOG_DEBUG, 0, " maxidle=%.2f us", maxidle/1000.0);
+ LOG(LOG_DEBUG, 0, " maxidle=%.2f us", PSEC_TO_USEC(maxidle));
if (minburst)
lofftime = cptime * (1.0 + 1.0/(1.0 - g) * (1.0 - gtom) / gtom);
else
lofftime = cptime;
- minidle = -((double)max_pkt_size * (double)nsPerByte);
+ minidle = -((double)max_pkt_size * (double)psPerByte);
if (IsDebug(DEBUG_ALTQ))
LOG(LOG_DEBUG, 0, " lofftime=%.2f us minidle=%.2f us",
- lofftime/1000.0, minidle/1000.0);
+ PSEC_TO_USEC(lofftime), PSEC_TO_USEC(minidle));
- maxidle = ((maxidle * 8.0) / nsPerByte) * pow(2, RM_FILTER_GAIN);
+ maxidle = ((maxidle * 8.0) / psPerByte) * pow(2, RM_FILTER_GAIN);
#if 1 /* ALTQ */
/* also scale lofftime and minidle */
- lofftime = (lofftime * 8.0) / nsPerByte * pow(2, RM_FILTER_GAIN);
- minidle = ((minidle * 8.0) / nsPerByte) * pow(2, RM_FILTER_GAIN);
+ lofftime = (lofftime * 8.0) / psPerByte * pow(2, RM_FILTER_GAIN);
+ minidle = ((minidle * 8.0) / psPerByte) * pow(2, RM_FILTER_GAIN);
#endif
maxidle = maxidle / 1000.0;
lofftime = lofftime / 1000.0;
@@ -872,7 +866,7 @@
else
maxq = 30.0;
} else {
- maxq = ((double) maxdelay * NS_PER_MS) / (nsPerByte * av_pkt_size);
+ maxq = ((double) maxdelay * PS_PER_MS) / (psPerByte * av_pkt_size);
if (maxq < 4) {
LOG(LOG_WARNING, 0,
"warning: maxq (%d) is too small. set to %d",
@@ -905,7 +899,7 @@
memset((void *)cl_spec, 0, sizeof(cbq_class_spec_t));
cl_spec->priority = pri;
- cl_spec->nano_sec_per_byte = (u_int) nsPerByte;
+ cl_spec->pico_sec_per_byte = (u_long) psPerByte;
cl_spec->maxq = (u_int) maxq;
cl_spec->maxidle = (u_int) fabs(maxidle);
cl_spec->minidle = (int)minidle;
diff -r 5036c9af4ee4 -r 33343d8701a2 usr.sbin/altq/libaltq/qop_cbq.h
--- a/usr.sbin/altq/libaltq/qop_cbq.h Wed Jul 21 06:35:44 2021 +0000
+++ b/usr.sbin/altq/libaltq/qop_cbq.h Wed Jul 21 06:36:33 2021 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: qop_cbq.h,v 1.3 2021/07/14 08:32:13 ozaki-r Exp $ */
+/* $NetBSD: qop_cbq.h,v 1.4 2021/07/21 06:36:33 ozaki-r Exp $ */
/* $KAME: qop_cbq.h,v 1.2 2000/10/18 09:15:18 kjc Exp $ */
/*
* Copyright (c) Sun Microsystems, Inc. 1993-1998 All rights reserved.
@@ -50,7 +50,7 @@
struct classinfo *default_class; /* default class */
struct classinfo *ctl_class; /* control class */
- double nsPerByte; /* bandwidth in ns per sec */
+ double psPerByte; /* bandwidth in ps per sec */
int is_wrr; /* use weighted-round robin */
int is_efficient; /* use work-conserving */
bool no_control; /* don't create a control class automatically */
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