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Re: [PATCH 1/2] mac80211: add flag to indicate HW only Tx-agg support

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On Thu, 2011-08-25 at 12:51 +0300, Arik Nemtsov wrote:
> When this flag is set, Tx aggregations will not be initiated even
> if the hardware supports A-MPDU aggregation in general. This flag
> is required for devices supporting (partial) software Rx-aggregation.
> 
> Signed-off-by: Arik Nemtsov <arik@xxxxxxxxxx>
> ---
>  include/net/mac80211.h |    4 ++++
>  net/mac80211/agg-tx.c  |    3 ++-
>  net/mac80211/debugfs.c |    2 ++
>  net/mac80211/tx.c      |    3 ++-
>  4 files changed, 10 insertions(+), 2 deletions(-)
> 
> diff --git a/include/net/mac80211.h b/include/net/mac80211.h
> index 2f01d84..b21a5bb 100644
> --- a/include/net/mac80211.h
> +++ b/include/net/mac80211.h
> @@ -1094,6 +1094,9 @@ enum sta_notify_cmd {
>   *	stations based on the PM bit of incoming frames.
>   *	Use ieee80211_start_ps()/ieee8021_end_ps() to manually configure
>   *	the PS mode of connected stations.
> + *
> + * @IEEE80211_HW_TX_AMPDU_IN_HW_ONLY: The device handles TX aggregation
> + *	strictly in HW. Packets should not be aggregated in software.

In addition to the discussion with Helmut -- this is also misleading
since mac80211 doesn't, right now, aggregate anything in software -- it
just handles session setup (which is what you don't want).

johannes

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