Date: Mon, 19 Sep 2011 00:09:57 GMT From: Juergen Lock <nox@FreeBSD.org> To: FreeBSD-gnats-submit@FreeBSD.org Subject: kern/160815: [patch] [iwn] Fix channel switching in monitor mode Message-ID: <201109190009.p8J09vhV018442@freefall.freebsd.org> Resent-Message-ID: <201109190010.p8J0A8AN018481@freefall.freebsd.org>
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>Number: 160815 >Category: kern >Synopsis: [patch] [iwn] Fix channel switching in monitor mode >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: Mon Sep 19 00:10:08 UTC 2011 >Closed-Date: >Last-Modified: >Originator: Juergen Lock >Release: FreeBSD 8.2-STABLE i386 >Organization: me? organized?? >Environment: System: FreeBSD enceladus.kn-bremen.de 9.0-BETA1 FreeBSD 9.0-BETA1 #1: Thu Sep 15 23:06:39 CEST 2011 nox@enceladus.kn-bremen.de:/usr/obj/usr/src/sys/ENCELADUS amd64 >Description: As mentioned earler on -current, http://lists.freebsd.org/pipermail/freebsd-current/2011-September/027418.html I have a "Centrino Advanced-N 6230" half-size mini-pcie card and found channel switching didn't work in monitor mode, the patch below seems to fix it. >How-To-Repeat: # ifconfig wlan0 create wlandev iwn0 wlanmode monitor ... >Fix: --- src/sys/dev/iwn/if_iwn.c.orig +++ src/sys/dev/iwn/if_iwn.c @@ -6984,12 +6984,24 @@ iwn_set_channel(struct ieee80211com *ic) const struct ieee80211_channel *c = ic->ic_curchan; struct ifnet *ifp = ic->ic_ifp; struct iwn_softc *sc = ifp->if_softc; + int error; IWN_LOCK(sc); sc->sc_rxtap.wr_chan_freq = htole16(c->ic_freq); sc->sc_rxtap.wr_chan_flags = htole16(c->ic_flags); sc->sc_txtap.wt_chan_freq = htole16(c->ic_freq); sc->sc_txtap.wt_chan_flags = htole16(c->ic_flags); + + /* + * Only need to set the channel in Monitor mode. AP scanning and auth + * are already taken care of by their respective firmware commands. + */ + if (ic->ic_opmode == IEEE80211_M_MONITOR) { + error = iwn_config(sc); + if (error != 0) + device_printf(sc->sc_dev, + "error %d settting channel\n", error); + } IWN_UNLOCK(sc); } >Release-Note: >Audit-Trail: >Unformatted:
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