From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from fg-out-1718.google.com ([72.14.220.153]:36602 "EHLO fg-out-1718.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932803AbYEBVsd (ORCPT ); Fri, 2 May 2008 17:48:33 -0400 Received: by fg-out-1718.google.com with SMTP id 19so1063685fgg.17 for ; Fri, 02 May 2008 14:48:31 -0700 (PDT) To: Johannes Berg Subject: Re: rt61pci/rt73usb: Hardware decryption IV/EIV Date: Fri, 2 May 2008 23:53:46 +0200 Cc: linux-wireless@vger.kernel.org, rt2400-devel@lists.sourceforge.net References: <200805022141.28351.IvDoorn@gmail.com> <1209762178.3608.21.camel@johannes.berg> <200805022328.00185.IvDoorn@gmail.com> In-Reply-To: <200805022328.00185.IvDoorn@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-15" Message-Id: <200805022353.47018.IvDoorn@gmail.com> (sfid-20080502_234811_421602_616121EC) From: Ivo van Doorn Sender: linux-wireless-owner@vger.kernel.org List-ID: > *however* with the "reserved" descriptor field added to the tail of the frame, > made the device come to live again. The rx_handlers_drop counter now stays at the > usual level of 3, and pings are getting through. > I haven't checked if the descriptor field actually contains any data, but then again > mac80211 doesn't check the value either (with WEP anyway). ;) > So either the descriptor field is indeed the ICV, > or just appending 4 random bytes at the end of the frame did the trick. > Somehow I think the second idea has the highest probability. :S Hmm, looking at the data coming from the hardware, one would really think the third column looks random enough to have something to do with encryption. ;) RX: 00744ef3 00000000 511beb8f RX: 00bc6056 00000000 9ba5d723 RX: 00384c30 00000000 32f2d121 RX: 00a57027 00000000 9278a11c RX: 008ff83d 00000000 8f9cd735 RX: 00c4d0a6 00000000 efa740b8 RX: 00dbe43e 00000000 0383ed8d RX: 00d3b2cd 00000000 367d1648 RX: 00029e40 00000000 de4c3589 RX: 00a1cea7 00000000 825a88cc RX: 006d325c 00000000 e1f7be5d RX: 00ca0a8b 00000000 32165233 RX: 003a6811 00000000 635ab7db RX: 00c7224c 00000000 9d19d071 RX: 009992c5 00000000 577bc5e3 RX: 0059da01 00000000 c2a4e66e RX: 00ff7459 00000000 f3c6e38b RX: 00d1b68f 00000000 511beb8f RX: 00073a8a 00000000 e1f7be5d Ivo