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Re: [ath9k-devel] [PATCH v2 3/3] ath9k: Keep track of stations for debugfs.

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On 2011-01-07 1:12 PM, Luis R. Rodriguez wrote:
On Thu, Jan 06, 2011 at 08:49:12PM -0800, greearb@xxxxxxxxxxxxxxx wrote:
 From: Ben Greear<greearb@xxxxxxxxxxxxxxx>

 The stations hold the ath_node, which holds the tid
 and other xmit logic structures.  In order to debug
 stuck xmit logic, we need a way to print out the tid
 state for the stations.

 Signed-off-by: Ben Greear<greearb@xxxxxxxxxxxxxxx>
 ---

 v1 ->  v2:  Use linked list instead of array.  Protect with spinlock.

Again, see my comments about the # STAs limit. I think this can go in
as a cfg80211 driver limitation which can be exposed. If you want to go
over the supported number (known to work, safe, call it what you want)
then a kconfig option can be used.
I disagree with putting in an essentially arbitrary restriction based on what has been tested, unless we can actually point at a *specific* limitation that makes the limit necessary. If ath9k gets unstable with too many STA interfaces, then we should identify the underlying cause or fix it.

- Felix
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