On Thu, Oct 25, 2012 at 12:43 PM, Johannes Berg
<[email protected]> wrote:
> On Thu, 2012-10-25 at 11:10 -0700, Javier Cardona wrote:
>> Per IEEE Std. 802.11-2012, Sec 8.2.4.4.1, the sequence Control field is
>> not present in control frames.  We noticed this problem when processing
>> Block Ack Requests.
>>
>> Signed-off-by: Javier Cardona <[email protected]>
>> Signed-off-by: Javier Lopez <[email protected]>
>> ---
>>  net/mac80211/rx.c |    4 ++++
>>  1 files changed, 4 insertions(+), 0 deletions(-)
>>
>> diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
>> index f975f64..bf54336 100644
>> --- a/net/mac80211/rx.c
>> +++ b/net/mac80211/rx.c
>> @@ -1467,6 +1467,10 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data 
>> *rx)
>>
>>       hdr = (struct ieee80211_hdr *)rx->skb->data;
>>       fc = hdr->frame_control;
>> +
>> +     if (ieee80211_is_ctl(fc))
>
> Different question -- why check _is_ctl rather than !_is_data?

Per the Std, management frames can also be fragmented (not that I've
ever seen one).  The standard only excludes control frames.

Javier


-- 
Javier Cardona
cozybit Inc.
http://www.cozybit.com
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