Date: Sun, 20 Mar 2011 23:33:27 GMT From: Marcin Wisnicki <mwisnicki+freebsd@gmail.com> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/155736: [pf] [altq] borrow from parent queue does not work with cbq Message-ID: <201103202333.p2KNXRqd033269@red.freebsd.org> Resent-Message-ID: <201103202340.p2KNe1UX035090@freefall.freebsd.org>
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>Number: 155736
>Category: kern
>Synopsis: [pf] [altq] borrow from parent queue does not work with cbq
>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 Mar 20 23:40:01 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator: Marcin Wisnicki
>Release: 8.2-STABLE
>Organization:
>Environment:
FreeBSD ghost.pnet.one.pl 8.2-STABLE FreeBSD 8.2-STABLE #1: Wed Mar 2 17:18:23 CET 2011 root@ghost.pnet.one.pl:/home/obj/usr/src/sys/SERWER_DDB i386
>Description:
I have queues like this:
altq on $lan_if cbq bandwidth 100Mb queue { qLocal, qExt }
queue qLocal bandwidth 0b cbq(default borrow)
queue qExt bandwidth 10Mb cbq { qExtFast, qExtSlow }
queue qExtFast priority 7 bandwidth 80% cbq(borrow)
queue qExtSlow priority 1 bandwidth 20% cbq(borrow red)
pass on $lan_if from <slow> to $internet queue qExtSlow
pass on $lan_if from $internet to <slow> queue qExtSlow
pass on $lan_if from !<slow> to $internet queue qExtFast
Lan is 100Mbps and Wan is 10Mbps. Above rules are supposed to slow down traffic coming from internet to <slow> hosts.
Unfortunately it seems that borrowing does not work when parent queue (qExt) does not also borrow. But it should according to man and PF FAQ.
pfctl -sq -v shows 0 packets in qExt. If I reduce eg. qExtFast to 10% it goes down as if there was no borrow.
Googling reveals many similar posts dating back to FreeBSD-6, possibly bug is there since ALTQ introduction.
>How-To-Repeat:
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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