From patchwork Mon May 4 18:21:24 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Oh X-Patchwork-Id: 6329441 Return-Path: X-Original-To: patchwork-ath10k@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 687CABEEE1 for ; Mon, 4 May 2015 18:26:20 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 8628F202E9 for ; Mon, 4 May 2015 18:26:19 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A044D200DF for ; Mon, 4 May 2015 18:26:18 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1YpL4E-0005dE-LX; Mon, 04 May 2015 18:26:10 +0000 Received: from sabertooth01.qualcomm.com ([65.197.215.72]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1YpL4C-0005aL-A5 for ath10k@lists.infradead.org; Mon, 04 May 2015 18:26:08 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=qca.qualcomm.com; i=@qca.qualcomm.com; q=dns/txt; s=qcdkim; t=1430763968; x=1462299968; h=from:to:cc:subject:date:message-id:mime-version; bh=pkdisI/+C1whwOnXeXE+XwSiQlgYpN/ggi0/uaZNlNw=; b=Mvioh5Licf2j4Q+1N9fmyQBMIveyZ7tPQfWi1VbSL9kCjGCRjxLRGfxq qrkwEKuQXgil3vMhMvAbsRv4+8SQmleLyGaSNCiTeyhYcCIjk77TfTYLc OAqftu8dXDf/W1iElonNJIN8Fx+mGHiO+kTAmplDA/Cwv+pw1qCsbDJtj Y=; X-IronPort-AV: E=McAfee;i="5700,7163,7791"; a="88337228" Received: from ironmsg04-r.qualcomm.com ([172.30.46.18]) by sabertooth01.qualcomm.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 04 May 2015 11:25:45 -0700 X-IronPort-AV: E=Sophos;i="5.13,366,1427785200"; d="scan'208";a="962776601" Received: from nasanexm01b.na.qualcomm.com ([10.85.0.82]) by Ironmsg04-R.qualcomm.com with ESMTP/TLS/RC4-SHA; 04 May 2015 11:25:44 -0700 Received: from poh-linux2.qualcomm.com (10.80.80.8) by NASANEXM01B.na.qualcomm.com (10.85.0.82) with Microsoft SMTP Server (TLS) id 15.0.1044.25; Mon, 4 May 2015 11:25:44 -0700 From: Peter Oh To: Subject: [PATCH] ath10k: increase relay buffer size of spectral scan Date: Mon, 4 May 2015 11:21:24 -0700 Message-ID: <1430763684-1630-1-git-send-email-poh@qca.qualcomm.com> X-Mailer: git-send-email 1.9.1 MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: NASANEXM01E.na.qualcomm.com (10.85.0.31) To NASANEXM01B.na.qualcomm.com (10.85.0.82) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150504_112608_405110_25389D33 X-CRM114-Status: UNSURE ( 9.05 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -5.1 (-----) Cc: linux-wireless@vger.kernel.org X-BeenThere: ath10k@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "ath10k" Errors-To: ath10k-bounces+patchwork-ath10k=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED, T_DKIM_INVALID, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Spectral scan supported by ath10k has capability to monitor and report through whole bands and channels, but current buffer size is too small to save reported spectral scan data. This results in dropping 5G channel reports at all when dual band card is used, so that users are not able to analyze spectral environments. Hence increase the buffer size to fix the problem. A spectral data size is vary based on the number of bins, so the unit buffer size, 1140, is chose to minimize relay buffer fragmentation. The total buffer size is also chose in tradeoff with spectral scan support vs. kernel memory consumption. Since theoretical maximum buffer size, 9.5MB, can be consumed with 512 bins in dual bands, we target to cover up to 128 bins for all channels in dual bands and due to the buffer size limitation, spectral scan with bin number bigger than 128 needs to be run on single band each. Signed-off-by: Peter Oh --- drivers/net/wireless/ath/ath10k/spectral.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath10k/spectral.c b/drivers/net/wireless/ath/ath10k/spectral.c index d22addf..8dcd424 100644 --- a/drivers/net/wireless/ath/ath10k/spectral.c +++ b/drivers/net/wireless/ath/ath10k/spectral.c @@ -519,9 +519,12 @@ int ath10k_spectral_vif_stop(struct ath10k_vif *arvif) int ath10k_spectral_create(struct ath10k *ar) { + /* The buffer size covers whole channels in dual bands up to 128 bins. + * Scan with bigger than 128 bins needs to be run on single band each. + */ ar->spectral.rfs_chan_spec_scan = relay_open("spectral_scan", ar->debug.debugfs_phy, - 1024, 256, + 1140, 2500, &rfs_spec_scan_cb, NULL); debugfs_create_file("spectral_scan_ctl", S_IRUSR | S_IWUSR,