Date: Sun, 27 Jan 2008 19:44:54 GMT From: Ermal Luçi <eri@FreeBSD.org> To: freebsd-gnats-submit@FreeBSD.org Subject: misc/120057: Allow propper settings of ALTQ_HFSC. The check i wrong since even with the values forbidden from this check you get a concave curve. Message-ID: <200801271944.m0RJis1c075038@www.freebsd.org> Resent-Message-ID: <200801271950.m0RJo0SQ034555@freefall.freebsd.org>
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>Number: 120057
>Category: misc
>Synopsis: Allow propper settings of ALTQ_HFSC. The check i wrong since even with the values forbidden from this check you get a concave curve.
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sun Jan 27 19:50:00 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator: Ermal Luçi
>Release: HEAD
>Organization:
>Environment:
FreeBSD 8.0-CURRENT FreeBSD 8.0-CURRENT #2: Mon Dec 17 22:57:03 CET 2007 root@:/usr/obj/usr/home/eri/development/compile/src/sys/GENERIC amd64
>Description:
The authors of PF mistankely have inserted this patch which doesn't allow propper configuration of ALTQ_HFSC. With these parameters you can get a concave curve!
Even if you read the paper dedicated to HFSC on acm.org you will see that the original author used a curve prohibitted by authors of PF.
>How-To-Repeat:
>Fix:
Patch attached with submission follows:
Index: pfctl_altq.c
===================================================================
RCS file: /home/eri/FreeBSD/src/contrib/pf/pfctl/pfctl_altq.c,v
retrieving revision 1.9
diff -u -r1.9 pfctl_altq.c
--- pfctl_altq.c 3 Jul 2007 12:30:02 -0000 1.9
+++ pfctl_altq.c 27 Jan 2008 19:41:11 -0000
@@ -690,13 +690,6 @@
return (-1);
}
- if ((opts->rtsc_m1 < opts->rtsc_m2 && opts->rtsc_m1 != 0) ||
- (opts->lssc_m1 < opts->lssc_m2 && opts->lssc_m1 != 0) ||
- (opts->ulsc_m1 < opts->ulsc_m2 && opts->ulsc_m1 != 0)) {
- warnx("m1 must be zero for convex curve: %s", pa->qname);
- return (-1);
- }
-
/*
* admission control:
* for the real-time service curve, the sum of the service curves
>Release-Note:
>Audit-Trail:
>Unformatted:
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