Date: Mon, 05 Nov 2001 21:51:28 +0300 From: fbsdlist-ipfw@f151.n5025.z2.fidonet.org (fbsdlist-ipfw) To: freebsd-ipfw@freebsd.org Subject: ipfw with RED Message-ID: <MSGID_2=3A5025=2F151_3be75e11@fidonet.org>
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Hello!
I have FreeBSD 4.4-STABLE cvsuped at Nov 4, two ethernet cards (xl and ed)
The following my ipfw configuration causes kernel panic in
sys/netinet/ip_dummynet.c:red_drops() after ~2 sec (depending of network load)
ipfw pipe 1 config bw 3000bit/s queue 2kbyte
ipfw queue 2 config pipe 1 queue 100 red 0.008/30/80/0.1
ipfw add 1 queue 2 ip from any to any out xmit ed0
Also any ipfw configuration with RED causes kernel panic.
I found the following workaround:
=====
-+- ip_dummynet.c.orig Sun Nov 4 18:44:49 2001
+++ ip_dummynet.c Sun Nov 4 21:44:51 2001
@@ -955,7 +955,7 @@
* XXX check wraps...
*/
if (q->avg) {
- u_int t = (curr_time - q->q_time) / fs->lookup_step;
+ u_int t = (curr_time - q->q_time) / ( fs->lookup_step ?
+ fs->lookup_step : (fs->lookup_step=1) );
q->avg = (t < fs->lookup_depth) ?
SCALE_MUL(q->avg, fs->w_q_lookup[t]) : 0;
=====
This bug(?) is not related last dummynet changes, it also was in sources
cvsup'ed at Oct 4
Does anybody use ipfw with RED or GRED without such troubles?
Gennady Proskurin
email: gpr@nvnpp.vrn.ru
FIDO: 2:5025/151
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