From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matteo Cypriani Subject: Re: multi-antenna handling Date: Wed, 25 Jun 2014 09:09:01 -0400 Message-ID: <20140625090901.fa121a689f823f3af1db1e3a@lm7.fr> References: <1345481425.4459.46.camel@jlt3.sipsolutions.net> <1373273952.8312.7.camel@jlt4.sipsolutions.net> <1403679889.4140.2.camel@jlt4.sipsolutions.net> Mime-Version: 1.0 Content-Type: multipart/signed; protocol="application/pgp-signature"; micalg="PGP-SHA256"; boundary="Signature=_Wed__25_Jun_2014_09_09_01_-0400_PJJtm9ngDj_+tTR1" Return-path: In-Reply-To: <1403679889.4140.2.camel-8Nb76shvtaUJvtFkdXX2HixXY32XiHfO@public.gmane.org> Sender: radiotap-owner-sUITvd46vNxg9hUCZPvPmw@public.gmane.org To: Johannes Berg Cc: Guy Harris , Felix Fietkau , "radiotap-sUITvd46vNxg9hUCZPvPmw@public.gmane.org" List-Id: radiotap@radiotap.org --Signature=_Wed__25_Jun_2014_09_09_01_-0400_PJJtm9ngDj_+tTR1 Content-Type: text/plain; charset=US-ASCII Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi there, On Wed, 25 Jun 2014 09:04:49 +0200, Johannes Berg wrote: > > Context: somebody asked on ask.wireshark.org about a capture from a > > D-Link router running OpenWRT; he claims that the router has 2 > > antennas, but the capture has 3 antenna signal strength values, the > > first of which is in the first radiotap namespace: > >=20 > > http://ask.wireshark.org/questions/33994/why-there-are-3-rssi-values-i= n-the-radiotap-header-for-a-dual-antenna-wireless-card >=20 > That's a bit strange - might be a driver quirk. The code I wrote has to > rely on the driver, adding Felix who might know more, I don't know how > ath9k works in this regard. I observed the same on TP-Link TL-WDR3500 (which is also ath9k-based), and assumed the signal in the first namespace was an average of the two others. Should I understand this may be a wrong assumption? Matteo --Signature=_Wed__25_Jun_2014_09_09_01_-0400_PJJtm9ngDj_+tTR1 Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAEBCAAGBQJTqsntAAoJEE6QGOCjKRJrA5IQAI9MiU0mELYpp8R1wN6QmQze lCrBLTNJHNe5JiKpXROLbAcz48d2fF0gNfx6GIpVtgxv3Ravj3Z8XEp/rXu1R6qU 1b+IHIbaPLQadhbNU6oj1Li6je6R38oeClG4UuJyqwvg7+CZABtkaG38+4jfj5ei zoPjHwYXZa8dvjUaSTuiQhBygQlnM5+TnTPpznnRKX8jzOkrLHEgcl0duzgpAs1E Xsz5JNWXj9yY4Bh5z8/74HV6yqygQmkus9FZzIzlLzfzoBj2Uh3/mybIImaCHPwv +fbsds7Sp5I/W3MHx/XaIFJCYxwIgXQXVB0BWg954n4HxiR6BSTEq73mF/dqTqVr NNAFtbX6BHsAn0Casb5GV4uOZNPWvQrxsWyY7XP49J0dketGZbr63jdWgBqJ1Z1F XLsthkBlWkXrQyuzxQnJ8HvkHRC6rtmYfptV92hek960cNxqO8fIuEyTHnPTUj3C Uorzg5XYBzzbTRtmnWyendPiF+DWI/6cpDvOyb8tn7SFTziZEV1wHX8oPc5PGkcI b6+8P5PO8Sq3XbiymEdS0Nw5Qqrkwm9s20xeFbzoHkzZi9HdTuO6ZzskUI58P6hx LL2mGCY0FTylg0ouzBNRMgfb1QOdgqzPF3acTR62VLwvS9DP+O05l5PyFEUT29eO DOFfCUdjfjWowOw2uA3w =UkGj -----END PGP SIGNATURE----- --Signature=_Wed__25_Jun_2014_09_09_01_-0400_PJJtm9ngDj_+tTR1--