[IPROUTE]: Introduce tc_calc_xmitsize and use where appropriate
Add tc_calc_xmitsize() as complement to tc_calc_xmittime(), which calculates
the size that can be transmitted at a given rate during a given time.
Replace all expressions of the form "size =
rate*tc_core_tick2usec(time))/1000000"
by tc_calc_xmitsize() calls.
Signed-off-by: Patrick McHardy <[EMAIL PROTECTED]>
---
commit 8b41013e2abb8eb6d3c960911d2ce137b40ccd50
tree 85068a3019ad77563ae82b9277bd13f3a6de19ba
parent a367af8046d31e986740aac45677c8fe8910c293
author Patrick McHardy <[EMAIL PROTECTED]> Sat, 03 Mar 2007 20:30:50 +0100
committer Patrick McHardy <[EMAIL PROTECTED]> Sat, 03 Mar 2007 20:30:50 +0100
tc/m_police.c | 2 +-
tc/q_htb.c | 4 ++--
tc/q_tbf.c | 4 ++--
tc/tc_core.c | 5 +++++
tc/tc_core.h | 1 +
5 files changed, 11 insertions(+), 5 deletions(-)
diff --git a/tc/m_police.c b/tc/m_police.c
index 93f317c..36a7719 100644
--- a/tc/m_police.c
+++ b/tc/m_police.c
@@ -331,7 +331,7 @@ #endif
fprintf(f, " police 0x%x ", p->index);
fprintf(f, "rate %s ", sprint_rate(p->rate.rate, b1));
- buffer = ((double)p->rate.rate*tc_core_tick2usec(p->burst))/1000000;
+ buffer = tc_calc_xmitsize(p->rate.rate, p->burst);
fprintf(f, "burst %s ", sprint_size(buffer, b1));
fprintf(f, "mtu %s ", sprint_size(p->mtu, b1));
if (show_raw)
diff --git a/tc/q_htb.c b/tc/q_htb.c
index d5f85c3..53e3f78 100644
--- a/tc/q_htb.c
+++ b/tc/q_htb.c
@@ -259,9 +259,9 @@ static int htb_print_opt(struct qdisc_ut
fprintf(f, "quantum %d ", (int)hopt->quantum);
}
fprintf(f, "rate %s ", sprint_rate(hopt->rate.rate, b1));
- buffer =
((double)hopt->rate.rate*tc_core_tick2usec(hopt->buffer))/1000000;
+ buffer = tc_calc_xmitsize(hopt->rate.rate, hopt->buffer);
fprintf(f, "ceil %s ", sprint_rate(hopt->ceil.rate, b1));
- cbuffer =
((double)hopt->ceil.rate*tc_core_tick2usec(hopt->cbuffer))/1000000;
+ cbuffer = tc_calc_xmitsize(hopt->ceil.rate, hopt->cbuffer);
if (show_details) {
fprintf(f, "burst %s/%u mpu %s overhead %s ",
sprint_size(buffer, b1),
diff --git a/tc/q_tbf.c b/tc/q_tbf.c
index b50519f..cbfdcd8 100644
--- a/tc/q_tbf.c
+++ b/tc/q_tbf.c
@@ -218,7 +218,7 @@ static int tbf_print_opt(struct qdisc_ut
if (RTA_PAYLOAD(tb[TCA_TBF_PARMS]) < sizeof(*qopt))
return -1;
fprintf(f, "rate %s ", sprint_rate(qopt->rate.rate, b1));
- buffer =
((double)qopt->rate.rate*tc_core_tick2usec(qopt->buffer))/1000000;
+ buffer = tc_calc_xmitsize(qopt->rate.rate, qopt->buffer);
if (show_details) {
fprintf(f, "burst %s/%u mpu %s ", sprint_size(buffer, b1),
1<<qopt->rate.cell_log, sprint_size(qopt->rate.mpu,
b2));
@@ -230,7 +230,7 @@ static int tbf_print_opt(struct qdisc_ut
if (qopt->peakrate.rate) {
fprintf(f, "peakrate %s ", sprint_rate(qopt->peakrate.rate,
b1));
if (qopt->mtu || qopt->peakrate.mpu) {
- mtu =
((double)qopt->peakrate.rate*tc_core_tick2usec(qopt->mtu))/1000000;
+ mtu = tc_calc_xmitsize(qopt->peakrate.rate, qopt->mtu);
if (show_details) {
fprintf(f, "mtu %s/%u mpu %s ",
sprint_size(mtu, b1),
1<<qopt->peakrate.cell_log,
sprint_size(qopt->peakrate.mpu, b2));
diff --git a/tc/tc_core.c b/tc/tc_core.c
index 90a097d..1ca4583 100644
--- a/tc/tc_core.c
+++ b/tc/tc_core.c
@@ -51,6 +51,11 @@ unsigned tc_calc_xmittime(unsigned rate,
return tc_core_usec2tick(1000000*((double)size/rate));
}
+unsigned tc_calc_xmitsize(unsigned rate, unsigned ticks)
+{
+ return ((double)rate*tc_core_tick2usec(ticks))/1000000;
+}
+
/*
rtab[pkt_len>>cell_log] = pkt_xmit_time
*/
diff --git a/tc/tc_core.h b/tc/tc_core.h
index 65611b6..ff00f92 100644
--- a/tc/tc_core.h
+++ b/tc/tc_core.h
@@ -8,6 +8,7 @@ int tc_core_usec2big(long usec);
long tc_core_usec2tick(long usec);
long tc_core_tick2usec(long tick);
unsigned tc_calc_xmittime(unsigned rate, unsigned size);
+unsigned tc_calc_xmitsize(unsigned rate, unsigned ticks);
int tc_calc_rtable(unsigned bps, __u32 *rtab, int cell_log, unsigned mtu,
unsigned mpu);
int tc_setup_estimator(unsigned A, unsigned time_const, struct tc_estimator
*est);
-
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