Re: mac80211 / iwl3945 + dynamic wep (again)

[drago01 <drago01@gmail.com>]

Johannes Berg wrote:
> Hmm.
>
> Not really very helpful. Do you have the WEP key that was in use at that
> time? 
no .. (have not stored it somewhere)
> Also, did the message actually occur during this dump?
>
>   
Yes and not only once ;)
> Is there any way to get the FCS of packets up to mac80211 from the
> iwlwifi drivers, or is it already snipped off by the firmware?
>
> Maybe you have a separate device you could capture traffic with?
> Preferably not iwlwifi, it seems to have trouble in monitor mode, at
> least my iwl4965 doesn't really seem to see traffic in foreign BSSes.
>
>   
Unfortunately no. I remember you sending a patch "adding proper monitor 
mode to iwl4965" .. has this ever been ported to iwl3945 ?
> Could you amend the failing printk to something like:
>
> DECLARE_MAC_BUF(mac1);
> DECLARE_MAC_BUF(mac2);
>
> [...]
>
> printk(KERN_DEBUG "WEP decrypt failed (ICV, A1=%s, A2=%s, seq=%x, wepidx=%d\n",
> 	print_mac(mac1, hdr->addr1), print_mac(mac2, hdr->addr2),
> 	le16_to_cpu(hdr->seq_ctrl), keyidx)
>
> Then start a packet capture and wait until the message occurs. Once it
> does, quickly run "iwlist key" as root to know what keys are currently
> in use and send me both the keys and the failing packet.
>
>   
Can do this (next week)
> Also, please see if maybe the printk is correlated (in time) with
> rekeying, the wpa_supplicant output (maybe with -dd) should tell you.
>
>   
I cannot say for sure now but last time I looked at the wpa_supplicant 
-ddd output while this was happening nothing was printed at all. But I 
will do this again and let you know.

thx