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Re: [PATCH] mac80211: retry sending failed BAR frames later instead of tearing down aggr

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On Sun, 2011-08-28 at 21:11 +0200, Felix Fietkau wrote:
> Unfortunately failed BAR tx attempts happen more frequently than I
> expected, and the resulting aggregation teardowns cause performance
> issues, as the aggregation session does not always get re-established
> properly.

I find this curious. How can tons of traffic go through, but BAR frames
fail? These are unicast and should be retried a bunch...

> Instead of tearing down the entire aggr session, we can simply store the
> SSN of the last failed BAR tx attempt, wait for the first successful
> tx status event, and then send another BAR with the same SSN.

So what if it keeps failing? I think eventually we'd want to kill the
session?

johannes

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