From 025dc69a25f016c3035212517bae481dafbb2651 Mon Sep 17 00:00:00 2001
From: "osdl.net!shemminger" <osdl.net!shemminger>
Date: Mon, 9 Aug 2004 17:12:23 +0000
Subject: [PATCH] Fix errors in netem scheduler when using PSCHED_CLOCK_CPU,
 correct value before passing to kernel.

(Logical change 1.63)
---
 ChangeLog    | 2 ++
 tc/q_netem.c | 7 +++++--
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 0f0685a6..fadaf35b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,7 @@
 2004-08-09  Stephen Hemminger  <shemminger@osdl.org>
 
+	* Fix netem scheduler to handle case where psched us != real us
+
 	* Remove configuration for everything that can depend on 
 	  extracted kernel headers
 	* Add kernel headers required to include/linux
diff --git a/tc/q_netem.c b/tc/q_netem.c
index e17e8b2a..bcd16e29 100644
--- a/tc/q_netem.c
+++ b/tc/q_netem.c
@@ -42,6 +42,7 @@ static int netem_parse_opt(struct qdisc_util *qu, int argc, char **argv,
 			   struct nlmsghdr *n)
 {
 	struct tc_netem_qopt opt;
+	unsigned latency = 0;
 	int ok = 0;
 
 	memset(&opt, 0, sizeof(opt));
@@ -57,7 +58,7 @@ static int netem_parse_opt(struct qdisc_util *qu, int argc, char **argv,
 			ok++;
 		} else if (matches(*argv, "latency") == 0) {
 			NEXT_ARG();
-			if (get_usecs(&opt.latency, *argv)) {
+			if (get_usecs(&latency, *argv)) {
 				explain1("latency");
 				return -1;
 			}
@@ -101,6 +102,8 @@ static int netem_parse_opt(struct qdisc_util *qu, int argc, char **argv,
 		argc--; argv++;
 	}
 
+	opt.latency = tc_core_usec2tick(latency);
+
 	return ok ? addattr_l(n, 1024, TCA_OPTIONS, &opt, sizeof(opt)) : 0;
 }
 
@@ -120,7 +123,7 @@ static int netem_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
 	fprintf(f, "limit %d", qopt->limit);
 	if (qopt->latency)
 		fprintf(f, " latency %s", 
-			sprint_usecs(qopt->latency, b1));
+			sprint_usecs(tc_core_tick2usec(qopt->latency), b1));
 	if (qopt->jitter)
 		fprintf(f, " jitter %s", sprint_usecs(qopt->jitter, b1));