On Wed, Nov 2, 2011 at 3:17 AM, Johannes Berg <[email protected]> wrote:
> On Fri, 2011-10-28 at 22:05 -0700, Thomas Pedersen wrote:
>> Previously QoS multicast frames had the Normal Acknowledgment QoS
>> control bits set. This would cause broadcast frames to be discarded by
>> peers with which we have a BA session, since their sequence number would
>> fall outside the allowed range. Set No Ack QoS control bits on multicast
>> QoS frames and filter these in de-aggregation code.
>
> I'm not sure why you would attempt to deaggregate broadcast frames but I
> guess mesh is a bit special.
>
>> @@ -770,6 +771,11 @@ static void ieee80211_rx_reorder_ampdu(struct 
>> ieee80211_rx_data *rx)
>>       if (unlikely(hdr->frame_control & 
>> cpu_to_le16(IEEE80211_STYPE_NULLFUNC)))
>>               goto dont_reorder;
>>
>> +     /* not part of a BA session */
>> +     if (!((ack_policy == IEEE80211_QOS_CTL_ACK_POLICY_BLOCKACK) ||
>> +           (ack_policy == IEEE80211_QOS_CTL_ACK_POLICY_NORMAL)))
>> +             goto dont_reorder;
>
> Maybe ack_policy != BA && ack_policy != NORMAl would be easier to read?

OK.
>
>> --- a/net/mac80211/wme.c
>> +++ b/net/mac80211/wme.c
>> @@ -147,7 +147,8 @@ void ieee80211_set_qos_hdr(struct ieee80211_sub_if_data 
>> *sdata,
>>
>>               tid = skb->priority & IEEE80211_QOS_CTL_TAG1D_MASK;
>>
>> -             if (unlikely(sdata->local->wifi_wme_noack_test))
>> +             if (unlikely(sdata->local->wifi_wme_noack_test) ||
>> +                 is_multicast_ether_addr(hdr->addr1))
>>                       ack_policy |= IEEE80211_QOS_CTL_ACK_POLICY_NOACK;
>
> Interestingly, this seems to have been a bug for a long time --
> 7.1.3.5.3 indicates this is supposed to be done.

I'll fix up the other patches as well and resubmit.

Thanks!
Thomas
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