>Number: 167675 >Category: misc >Synopsis: The txmaxpow and txpower values I see from ifconfig appear >wrong. >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 May 07 11:40:11 UTC 2012 >Closed-Date: >Last-Modified: >Originator: Ryan >Release: 8.1 i386 >Organization: none >Environment: FreeBSD pfSense.localdomain 8.1-RELEASE-p6 FreeBSD 8.1-RELEASE-p6 #0: Mon Dec 12 18:59:41 EST 2011 root@FreeBSD_8.0_pfSense_2.0-snaps.pfsense.org:/usr/obj./usr/pfSensesrc/src/sys/pfSense_wrap.8.i386 i386 >Description: I have a Compex WLM54G-26 wireless card (1)(2). It uses an AR2413 chipset. The following is partial output from "ifconfig".
regdomain FCC country CA indoor txpowmax 50.0 txpower 30 The values given for "txpowmax" and "txpower" seem incorrect to me. They do not appear to be using consistent units. I'm making the assumption they should be showing dBm. It's my understanding that net80211 stores these values as integers equal to 2xdBm, so it may be possible "txpowmax" is not being converted properly somewhere, but testing that assertion is beyond my ability at the moment. Also, the WLM54G-26 is a 26dBm card. Assuming "txpower" is displaying dBm, a value of "30" should not be possible. If I change the regulatory domain, the value of "txpower" appears to be what I would expect. regdomain 0 country US anywhere txpowmax 50.0 txpower 26 However, both the CA and the US country codes fall under the "fcc" domain in "/etc/regdomain.xml", so I'm not sure why it has any impact. Please note, I'm assuming "txpower" should match the output power of my card and I may be misunderstanding the values I should expect to see. I originally started asking about this on the pfSense forums (3). I also posted to the freebsd-wireless mailing list (4). Also of note, I am not using a vanilla version of FreeBSD. I am using pfSense 2.0.1 on an ALIX.2D13. Ryan 1: http://www.compex.com.sg/fullDescription.aspx?pID=28 2: http://www.compex.com.sg/Datasheets/WLM54G-26_DSv2.1.3.pdf 3: http://forum.pfsense.org/index.php/topic,48814.0.html 4: http://freebsd.1045724.n5.nabble.com/Where-can-I-find-information-about-the-txpower-and-txpowmax-values-from-ifconfig-td5689298.html >How-To-Repeat: Run "ifconfig -v ath0_wlan0". >Fix: >Release-Note: >Audit-Trail: >Unformatted: _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-bugs To unsubscribe, send any mail to "[email protected]"
