Return-path: Received: from mail2.candelatech.com ([208.74.158.173]:59554 "EHLO mail2.candelatech.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751960AbaIXQNI (ORCPT ); Wed, 24 Sep 2014 12:13:08 -0400 Message-ID: <5422ED94.60402@candelatech.com> (sfid-20140924_181313_102956_1D3F27B5) Date: Wed, 24 Sep 2014 09:13:08 -0700 From: Ben Greear MIME-Version: 1.0 To: Michal Kazior CC: linux-wireless , "ath10k@lists.infradead.org" Subject: Re: [PATCH] ath10k: request firmware flush in ath10k_flush. References: <1411151304-31544-1-git-send-email-greearb@candelatech.com> <5421818A.9040501@candelatech.com> In-Reply-To: Content-Type: text/plain; charset=UTF-8 Sender: linux-wireless-owner@vger.kernel.org List-ID: On 09/23/2014 11:50 PM, Michal Kazior wrote: > On 23 September 2014 16:19, Ben Greear wrote: >> On 09/23/2014 02:16 AM, Michal Kazior wrote: >>> On 19 September 2014 20:28, wrote: >>> [...] >>>> >>>> + /* If we are CT firmware, ask it to flush all tids on all peers >>>> on >>>> + * all vdevs. Normal firmware will just crash if you do this. >>>> + */ >>>> + if (test_bit(ATH10K_FW_FEATURE_WMI_10X_CT, ar->fw_features)) >>>> + ath10k_wmi_peer_flush(ar, 0xFFFFFFFF, peer_addr, >>>> 0xFFFFFFFF); >>> >>> I recall you've explained this some time ago, but can you refresh my >>> memory, please? Is this any different from iterating over all peers >>> and flushing each? Or does your firmware do so extra magic that is >>> impossible to do with normal firmware commands? >> >> My firmware does that iteration internally. >> >> You could probably do that in the driver, but it would be a lot >> of messages (for all vdevs, all peers, all tids)... >> I was not sure if there were limits to the number >> of commands you should attempt during the flush... > > Thanks. I think ath10k should do this instead of having CT-specific > flush eventually. Yes, though I would still like the optimization enabled if my firmware is running... > I recall I actually did per-peer flushing in RFC patches a long time > ago but I didn't pursue getting them merged. I think Denton uses these > patches in his setup. They don't flush vdev self-peers though (do you > do that internally?). I think I do. Let me check, and send you some details privately. Thanks, Ben -- Ben Greear Candela Technologies Inc http://www.candelatech.com