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I did it :)...

And rapidly I got this:

db>  =20
trace    =20
ieee80211_chan2mode(c057d3e0,ffff,c0824400,c057d3e0,c057d3e0) at
netbsd:ieee80211_chan2mode+0x7
ieee80211_dup_bss(c057da38,c59fc00a,c59fc0b4,c0360dc8,c02233e7) at
netbsd:ieee80211_dup_bss+0x7f
ieee80211_recv_mgmt(c057d3e0,c0607300,c0824400,50,11) at
netbsd:ieee80211_recv_mgmt+0x82e
ath_recv_mgmt(c057d3e0,c0607300,c0824400,50,11) at =
netbsd:ath_recv_mgmt+0x2c
ieee80211_input(c057d3e0,c0607300,c0824400,11,7259) at
netbsd:ieee80211_input+0xb2c
ath_rx_proc(c057d000,1,1,6,c058a480) at netbsd:ath_rx_proc+0x404
ath_intr(c057d000,1,0,c05672c0,0) at netbsd:ath_intr+0x16a
pccbbintr_function(c053e800,0,c0360010,30,10) at
netbsd:pccbbintr_function+0x105


Xintr_legacy11() at netbsd:Xintr_legacy11+0xad
--- interrupt ---
mpidle(c0311800,0,1,0,0) at netbsd:mpidle
ltsleep(c03114a0,4,c02c2ae2,0,0) at netbsd:ltsleep+0x207
uvm_scheduler(c030f6f8,1,c035c008,35c000,363000) at
netbsd:uvm_scheduler+0xb8
setrootfstime(0,0,0,0,0) at netbsd:setrootfstime
db>

_________________________________
=20
Konstantin K. KABASSANOV
=20
LIP6/CNRS
8, rue du Capitaine Scott
75015 Paris, France
=20
Phone: +33 (0) 1 44 27 71 26
Fax:   +33 (0) 1 44 27 74 95
=20
E-mail: konstantin@kabassanov.com
Web: http://www.kabassanov.com
_________________________________
=20
IMPORTANT! If you have tried to reply to this mail and you received a
stupid message, announcing that the mail had been rejected as spam,
please, resend your reply to the address above.=20
=20
The certificate used to sign this e-mail can be verified at:
http://igc.services.cnrs.fr/CNRS-Standard/recherche.html
=20
Mediocrity is the worst kind of failure...=20
=20
> -----Message d'origine-----
> De=A0: current-users-owner@NetBSD.org [mailto:current-users-
> owner@NetBSD.org] De la part de Konstantin KABASSANOV
> Envoy=E9=A0: mercredi 19 octobre 2005 12:12
> =C0=A0: 'Steven M. Bellovin'; 'David Young'
> Cc=A0: current-users@NetBSD.org; perry@piermont.com
> Objet=A0: RE: ath seems still buggy
>=20
> Hi,
>=20
> It is very consistent with the behaviour I've also observed.
>=20
> I'll try the patch and send my observations...
>=20
> Konstantin
>=20
>=20
> -----
> > De=A0: current-users-owner@NetBSD.org [mailto:current-users-
> > owner@NetBSD.org] De la part de Steven M. Bellovin
> > Envoy=E9=A0: mercredi 19 octobre 2005 02:02
> > =C0=A0: David Young
> > Cc=A0: current-users@NetBSD.org; perry@piermont.com
> > Objet=A0: Re: ath seems still buggy
> >
> > In message <20051018230552.GW1513@che.ojctech.com>, David Young =
writes:
> > >
> > >--SCOJXUq1iwCn05li
> > >Content-Type: text/plain; charset=3Dus-ascii
> > >Content-Disposition: inline
> > >
> > >On Tue, Oct 18, 2005 at 05:00:52PM -0400, Steven M. Bellovin wrote:
> > >> Sometimes, it works very well; in my house over the weekend (two
> access
> > >> points, with WEP), it worked flawlessly.  Other places, it's =
worked
> > >> poorly or not at all, so much so that I'm contemplating starting =
to
> > >> travel with a wi card again.
> > >
> > >Steve,
> > >
> > >I think I have figured it out by re-reading some logs Perry sent =
me.
> > >I will tell you what I think is happening.  When ath(4) doesn't =
receive
> > >the AP's beacon for a while, it times out and tries to reassociate =
with
> > >the AP.  In a zone where there's 802.11 congestion, your ath might
> > >miss a lot of beacons and time-out often.  Congestion may also =
cause
> > >reassociation to fail.  If reassociation fails, then ath will scan
> > >for access points again.  This is where things go haywire: a bug in
> > >the scanning code makes ath disregard your AP, because it failed to
> > >associate with it, until the AP is flushed from the scan table with
> > >ifconfig down/up.
> >
> > That is certainly very consistent with what I've observed.
> >
> > >
> > >You and Perry should try this patch.
> > >
> > I leave on a trip tomorrow, which means that I'll build a kernel =
with
> > that patch but *not* install it...
> >
> > >
> > >--
> > >David Young             OJC Technologies
> > >dyoung@ojctech.com      Urbana, IL * (217) 278-3933
> > >
> > >--SCOJXUq1iwCn05li
> > >Content-Type: text/plain; charset=3Dus-ascii
> > >Content-Disposition: attachment; filename=3Dscan-patch
> > >
> > >Index: ieee80211_node.c
> > =
>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
> > >RCS file: /cvsroot/src/sys/net80211/ieee80211_node.c,v
> > >retrieving revision 1.44
> > >diff -u -u -r1.44 ieee80211_node.c
> > >--- ieee80211_node.c	25 Sep 2005 00:03:06 -0000	1.44
> > >+++ ieee80211_node.c	18 Oct 2005 22:18:24 -0000
> > >@@ -619,7 +619,7 @@
> > > ieee80211_end_scan(struct ieee80211com *ic)
> > > {
> > > 	struct ieee80211_node_table *nt =3D &ic->ic_scan;
> > >-	struct ieee80211_node *ni, *selbs;
> > >+	struct ieee80211_node *next_ni, *ni, *selbs;
> > >
> > > 	ieee80211_cancel_scan(ic);
> > > 	ieee80211_notify_scan_done(ic);
> > >@@ -707,7 +707,8 @@
> > > 	IEEE80211_DPRINTF(ic, IEEE80211_MSG_SCAN, "\t%s\n",
> > > 	    "macaddr          bssid         chan  rssi rate flag  wep
> > essid");
> > > 	IEEE80211_NODE_LOCK(nt);
> > >-	TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
> > >+	for (ni =3D TAILQ_FIRST(&nt->nt_node); ni !=3D NULL; ni =3D =
next_ni) {
> > >+		next_ni =3D TAILQ_NEXT(ni, ni_list);
> > > 		if (ni->ni_fails) {
> > > 			/*
> > > 			 * The configuration of the access points may change
> > >@@ -718,11 +719,8 @@
> > > 				"%s: skip scan candidate %s, fails %u\n",
> > > 				__func__, ether_sprintf(ni->ni_macaddr),
> > > 				ni->ni_fails);
> > >-			ni->ni_fails++;
> > >-#if 0
> > > 			if (ni->ni_fails++ > 2)
> > > 				ieee80211_free_node(ni);
> > >-#endif
> > > 			continue;
> > > 		}
> > > 		if (ieee80211_match_bss(ic, ni) =3D=3D 0) {
> > >
> > >--SCOJXUq1iwCn05li--
> > >
> >
> >
> > 		--Steven M. Bellovin, http://www.cs.columbia.edu/~smb
> >


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