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Re: [PATCH] iwlwifi: mvm: don't filter out the first beacon

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On Tue, May 20, 2014 at 5:32 PM, John W. Linville
<linville@xxxxxxxxxxxxx> wrote:
> On Tue, May 20, 2014 at 01:37:18PM +0300, Emmanuel Grumbach wrote:
>> From: Avri Altman <avri.altman@xxxxxxxxx>
>>
>> Enabling beacon filtering should be done only after a beacon
>> has been received. Doing that too early will cause
>> disconnections.
>> This has already been fixed, but the fix didn't take care
>> about the case where the beacon is received after the
>> association, it waited only for association which is not
>> enough.
>>
>> Signed-off-by: Avri Altman <avri.altman@xxxxxxxxx>
>> Reviewed-by: Johannes Berg <johannes.berg@xxxxxxxxx>
>> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
>> ---
>>  drivers/net/wireless/iwlwifi/mvm/mac80211.c | 13 +++---
>>  drivers/net/wireless/iwlwifi/mvm/mvm.h      |  5 ---
>>  drivers/net/wireless/iwlwifi/mvm/power.c    | 63 +++++++++--------------------
>>  3 files changed, 27 insertions(+), 54 deletions(-)
>
> It is very late in the release cycle for a fix of this size.
> How serious is the issue?  A random disconnect doesn't seem like a
> huge problem so long as it isn't common...?
>
fwiw, it looks like you can simply workaround the issue by setting the
IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC flag.

Eliad.
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