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From: Ben Greear <greearb@candelatech.com>
To: Felix Fietkau <nbd@openwrt.org>
Cc: "ath9k-devel@lists.ath9k.org" <ath9k-devel@venema.h4ckr.net>,
	"linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>,
	Johannes Berg <johannes@sipsolutions.net>
Subject: Re: [ath9k-devel] ath9k, multiple stations, and AMPDUs
Date: Tue, 21 Sep 2010 10:25:53 -0700	[thread overview]
Message-ID: <4C98EAA1.7050908@candelatech.com> (raw)
In-Reply-To: <4C98A2C4.8060108@openwrt.org>

On 09/21/2010 05:19 AM, Felix Fietkau wrote:
> On 2010-09-21 2:08 PM, Ben Greear wrote:

>> If you have any more details on this, please let me know.  I'm going to
>> attempt to fix it...I certainly have a good test case :)
> ath_tx_complete_aggr completes an A-MPDU frame, which typically triggers
> the release of the next A-MPDU to the hw queue.
> To keep track of the Block ACK window, it needs to look up the TID, for
> which it needs a STA pointer. At that level, the driver typically
> doesn't have access to the vif.
>
> It might be possible to fix this by adding another sta lookup helper
> function in mac80211 that takes another address argument for the BSSID,
> so that it can get the sta entry for the correct vif. I don't know if
> Johannes wants something like that though.

Could we just poke a pointer to the STA into the ath_buf structure?

Thanks,
Ben

-- 
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc  http://www.candelatech.com


  parent reply	other threads:[~2010-09-21 17:26 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-09-21  5:25 ath9k, multiple stations, and AMPDUs Ben Greear
2010-09-21 10:10 ` [ath9k-devel] " Felix Fietkau
2010-09-21 12:08   ` Ben Greear
2010-09-21 12:19     ` Felix Fietkau
2010-09-21 12:24       ` Johannes Berg
2010-09-21 12:31       ` Johannes Berg
2010-09-21 17:25       ` Ben Greear [this message]
2010-09-21 18:00         ` Felix Fietkau
2010-09-21 18:04           ` Ben Greear
2010-09-21 18:06             ` Felix Fietkau
2010-09-21 19:28           ` Johannes Berg
2010-09-21 19:32             ` Felix Fietkau
2010-09-21 20:19               ` Ben Greear
2010-09-21 22:41                 ` Felix Fietkau
2010-09-22  4:33                   ` Ben Greear
2010-09-22  8:31                     ` Felix Fietkau
2010-09-23  4:58                       ` Ben Greear
2010-09-23  8:33                         ` Johannes Berg
2010-09-23 13:56                           ` Ben Greear
2010-09-23 14:05                             ` Johannes Berg

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