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Re: [RFC] mac80211: fix software decryption with b43legacy

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Ulrich Kunitz wrote:
Larry Finger wrote:

I have added the lists to this message.

I got b43legacy up and running with the software decryption modifications. It started OK with WPA-PSK TKIP encryption, but soon thereafter, I got this message:

eth1: No ProbeResp from current AP 00:1a:70:46:ba:b1 - assume out of range


Since the git tree reorg wireless-dev branch created comparable
problems for zd1211rw-mac80211 too. It might be related:

Aug 19 07:08:51 keks kernel: [   83.572628] wlan0: CCMP replay detected for RX frame from 00:04:0e:68:ad:70 (RX PN 00000000000c <= prev. PN 00000000000c)
Aug 19 07:08:54 keks kernel: [   87.432010] usb 1-2: handle_regs_int() regs interrupt ignored
Aug 19 07:08:55 keks kernel: [   87.898447] wlan0: No ProbeResp from current AP 00:04:0e:68:ad:70 - assume out of range
Aug 19 07:08:55 keks kernel: [   87.899649] wmaster0: Removed STA 00:04:0e:68:ad:70
Aug 19 07:08:55 keks kernel: [   87.901406] wlan0: set_encrypt - unknown addr 00:04:0e:68:ad:70

The first message might be a simple duplicate. The
handle_regs_int() is absolutely suspicious and I cannot really
explain it right now. The "No ProbeResp" might be a follow-up
problem. The whole USB subsystem becomes absolutely instable to
the point that I can't use keyboard and mouse anymore.
I will try Johannes' patch tomorrow.

BTW the wireless-dev reorg makes it impossible to actually use
git-bisect to find the patch, which caused the problem.
BTW the current Linus tree following patch doesn't work with the
current zd1211rw-mac80211. The offending patch is the following one:

commit b9bf1e60a294fc7795d5198f94a917290e52865b
Author: John W. Linville <linville@xxxxxxxxxxxxx>
Date:   Tue Aug 7 16:33:15 2007 -0400

    [PATCH] mac80211: probe for hidden SSIDs in pre-auth scan
Probe for hidden SSIDs if initiating pre-authentication scan and SSID
    is set for STA interface.
Signed-off-by: John W. Linville <linville@xxxxxxxxxxxxx>


This patch is not in my tree, but adding it breaks WEP. WPA fails with it in or out at the moment. I'm still looking at that problem.

Larry

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