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?

> --- 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.

johannes

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