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From: Patrick McHardy <kaber@trash.net>
To: shemminger@osdl.org
Cc: netdev@vger.kernel.org, Patrick McHardy <kaber@trash.net>
Subject: [IPROUTE 01/05]: Use tc_calc_xmittime where appropriate
Date: Wed, 10 Jan 2007 11:01:45 +0100 (MET)	[thread overview]
Message-ID: <20070110100144.29356.52367.sendpatchset@localhost.localdomain> (raw)
In-Reply-To: <20070110100143.29356.98344.sendpatchset@localhost.localdomain>

[IPROUTE]: Use tc_calc_xmittime where appropriate

Replace expressions of the form "1000000 * size/rate" by tc_calc_xmittime().
The CBQ case deserves an extra comment: when called with bnwd=rate
tc_cbq_calc_maxidle behaves identical to tc_calc_xmittime, so use it
for clarity.

Signed-off-by: Patrick McHardy <kaber@trash.net>

---
commit d786eedd7b3e9ceb381ee602efcbe002afc7be73
tree 4db59786df1da875f9c3956000496dd8455d5af6
parent 40076f622e0aacb2b792d3ac1b5d12aa97c4da9c
author Patrick McHardy <kaber@trash.net> Wed, 10 Jan 2007 10:40:05 +0100
committer Patrick McHardy <kaber@trash.net> Wed, 10 Jan 2007 10:40:05 +0100

 tc/q_cbq.c   |    2 +-
 tc/tc_core.c |    2 +-
 tc/tc_red.c  |    2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/tc/q_cbq.c b/tc/q_cbq.c
index bc7e8ba..0000a56 100644
--- a/tc/q_cbq.c
+++ b/tc/q_cbq.c
@@ -147,7 +147,7 @@ static int cbq_parse_opt(struct qdisc_ut
 	if (ewma_log < 0)
 		ewma_log = TC_CBQ_DEF_EWMA;
 	lss.ewma_log = ewma_log;
-	lss.maxidle = tc_cbq_calc_maxidle(r.rate, r.rate, avpkt, lss.ewma_log, 0);
+	lss.maxidle = tc_calc_xmittime(r.rate, avpkt);
 	lss.change = TCF_CBQ_LSS_MAXIDLE|TCF_CBQ_LSS_EWMA|TCF_CBQ_LSS_AVPKT;
 	lss.avpkt = avpkt;
 
diff --git a/tc/tc_core.c b/tc/tc_core.c
index 10c375e..90a097d 100644
--- a/tc/tc_core.c
+++ b/tc/tc_core.c
@@ -76,7 +76,7 @@ int tc_calc_rtable(unsigned bps, __u32 *
 			sz += overhead;
 		if (sz < mpu)
 			sz = mpu;
-		rtab[i] = tc_core_usec2tick(1000000*((double)sz/bps));
+		rtab[i] = tc_calc_xmittime(bps, sz);
 	}
 	return cell_log;
 }
diff --git a/tc/tc_red.c b/tc/tc_red.c
index 385e7af..8f9bde0 100644
--- a/tc/tc_red.c
+++ b/tc/tc_red.c
@@ -71,7 +71,7 @@ int tc_red_eval_ewma(unsigned qmin, unsi
 
 int tc_red_eval_idle_damping(int Wlog, unsigned avpkt, unsigned bps, __u8 *sbuf)
 {
-	double xmit_time = tc_core_usec2tick(1000000*(double)avpkt/bps);
+	double xmit_time = tc_calc_xmittime(bps, avpkt);
 	double lW = -log(1.0 - 1.0/(1<<Wlog))/xmit_time;
 	double maxtime = 31/lW;
 	int clog;

  reply	other threads:[~2007-01-10 10:01 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-01-10 10:01 [IPROUTE 00/05]: Time cleanups Patrick McHardy
2007-01-10 10:01 ` Patrick McHardy [this message]
2007-01-16  8:56   ` [IPROUTE 01/05]: Use tc_calc_xmittime where appropriate Jarek Poplawski
2007-01-16 10:19     ` Patrick McHardy
2007-01-16 11:02       ` Jarek Poplawski
2007-01-16 12:28         ` Patrick McHardy
2007-01-16 12:48           ` Jarek Poplawski
2007-01-10 10:01 ` [IPROUTE 02/05]: Introduce tc_calc_xmitsize and use " Patrick McHardy
2007-01-15 12:35   ` Jarek Poplawski
2007-01-15 15:07     ` Patrick McHardy
2007-01-10 10:01 ` [IPROUTE 03/05]: Introduce TIME_UNITS_PER_SEC to represent internal clock resolution Patrick McHardy
2007-01-10 10:01 ` [IPROUTE 04/05]: Replace "usec" by "time" in function names Patrick McHardy
2007-01-15 10:17   ` Jarek Poplawski
2007-01-16 13:42     ` Patrick McHardy
2007-01-10 10:01 ` [IPROUTE 05/05]: Add sprint_ticks() function and use in CBQ Patrick McHardy
  -- strict thread matches above, loose matches on Subject: below --
2006-06-23 18:06 [RFC IPROUTE 00/05]: Time cleanups Patrick McHardy
2006-06-23 18:06 ` [IPROUTE 01/05]: Use tc_calc_xmittime where appropriate Patrick McHardy
2006-06-23 18:28   ` Patrick McHardy

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