Date: Tue, 19 May 2009 15:35:16 +0200 From: Lars Engels <lars.engels@0x20.net> To: freebsd-current@freebsd.org Subject: Re: 802.11 monitor mode changes coming Message-ID: <20090519153516.yki2cyqpwg48sk04@0x20.net> In-Reply-To: <4A11A08B.6090309@errno.com> References: <4A11A08B.6090309@errno.com>
next in thread | previous in thread | raw e-mail | index | archive | help
This message is in MIME format and has been PGP signed. --=_6wapwxlldbks Content-Type: text/plain; charset=UTF-8; DelSp="Yes"; format="flowed" Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Quoting Sam Leffler <sam@errno.com>: > The patch here: > > http://people.freebsd.org/~sam/monitor-20090518.patch > > has significant changes to monitor mode operation. Most importantly it > replaces DLT_IEEE802_11 support in net80211 by DLT_IEEE802_11_RADIO and > removes the latter from the underlying device. The upshot is that you > can no longer do: > > tcpdump -i ath0 > > instead you will now need a wlanX ifnet; e.g. > > ifconfig wlan create wlandev ath0 wlanmode monitor channel 6 up > tcpdump -i wlan0 -y IEEE802_11_RADIO > > This addresses the longstanding issue that applications like kismet > that want radiotap data needed to open two ifnets, one to receive data > and one to do channel changes. My main concern is whether losing > DLT_IEEE802_11 support will affect any apps. Those that depend on it > should be easy to change; you just request a different DLT and strip > the radiotap header from tap'd frames (or similar). > > In sweeping the drivers to do these changes I've made radiotap support > more consistent and improved some drivers. Drivers not tested so far: > malo, ipw, wpi, and upgt. I tested iwi and it appears broken in that > no frames are rx'd but I'm not sure I'll look at it before 8.0. > > I plan to commit these changes by the end of the week. > > Sam Thanks, this should improve operability of aircrack-ng, too. I will try this tomorrow. --=_6wapwxlldbks Content-Type: application/pgp-signature Content-Description: PGP Digital Signature Content-Disposition: inline Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (FreeBSD) iEYEABECAAYFAkoStZQACgkQKc512sD3afiKXQCgnXhbQxozDkONr1ORG2hJdl9S nwIAoLua4ceSQLHPB8bHT0esekXV/kZg =g65P -----END PGP SIGNATURE----- --=_6wapwxlldbks--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20090519153516.yki2cyqpwg48sk04>