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Re: mac80211 / iwl3945 + dynamic wep (again)

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On Mon, Nov 26, 2007 at 03:50:00PM +0100, dragoran wrote:
> btw would it make sense to ratelimit
> 
> "WEP decrypt failed (ICV)" messages?
> they are a bit annoying when connected to this network...
> 
> dmesg  | grep ICV | wc -l
> 3489
> 
> after some minutes.

While I fully agree that these messages should be rate limited, it is
somewhat surprising to see this large a number of reported ICV failures.
Does the ipw3945 not filter out FCS errors before passing the frame for
WEP decryption? Or is there something odd about this network/client
configuration that makes the client try to decrypt frames that are not
really for it?

I can think of one valid case (VLAN with separate broadcast domains
using the same BSS), all other cases seem like waste of CPU power since
I would have expected the frames to be filtered out before reaching WEP
decryption if this STA is not the correct destination for them.

-- 
Jouni Malinen                                            PGP id EFC895FA
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