From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9D08E2BE119; Mon, 5 May 2025 22:47:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746485275; cv=none; b=qm68oKahPCwlUYz8CZDJxE5NydYlR43ecJYK1aSKN7gxm+kq+Q59e4xIMs9afGp4o/2WEknrhKf0/S6D5dMFaDSQz11H+BIIrNJP570uVK2LpAeHpBYFGdKrM6qKgCrDWGs40LjKJPOVNKuR3FwdeCsqe/rUnw79VcVHiYKFeVk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746485275; c=relaxed/simple; bh=DriiC+jigrAkqE9YIrsDXI5AvQJgjGi1697ipqfGh1A=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=DexGu+psvF1fVD0PZ3Il0XTu1GNImCBW1nQZydqx6mhnRXOCdsIuS/9spb16VpVQjARr3nCn1pVuQ+9tI0XQl2mJJTta5QBrR3zw95PuNO8MG7y6qMg6L3ja+LDCYw6VYjPp/agUqkGSnhm+fuBfPJo9iswdTOufJBFN7nrSjIg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=PKpRzBoh; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="PKpRzBoh" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 07123C4CEE4; Mon, 5 May 2025 22:47:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1746485274; bh=DriiC+jigrAkqE9YIrsDXI5AvQJgjGi1697ipqfGh1A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PKpRzBohfS/aTLnFGutW/4mICdFPCU8I6w8/PiGUeprX7MY0ZpTm0jVHhvfcFmDUb YLFo8AFOvWY2A/ohwCnoXlEaV64blS7XyCPFHM3OYd+f0yY8yUi/ntYg2kSyMDQufJ KROrL+c20bGcMir4xi62CSocAJcwPpf0vjKksLz4i/3iv3r1IJg9wU35qJ8kWmvaNj aEcD1QRJaCxBYp2D5uLx45QYDhdmQz46k/IK9kAs7OinqY2sdIbIDGXSJgTDsJql9K HWd+xHlhJM0TlmAR4/fK98yMa842dL7ciBM22N8sB42Bb8AuQQyUNPuOYrtcjPOdyL ttUk+WHrW/z0Q== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Ramasamy Kaliappan , Roopni Devanathan , Vasanthakumar Thiagarajan , Jeff Johnson , Sasha Levin , jjohnson@kernel.org, linux-wireless@vger.kernel.org, ath12k@lists.infradead.org Subject: [PATCH AUTOSEL 6.12 247/486] wifi: ath12k: Improve BSS discovery with hidden SSID in 6 GHz band Date: Mon, 5 May 2025 18:35:23 -0400 Message-Id: <20250505223922.2682012-247-sashal@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250505223922.2682012-1-sashal@kernel.org> References: <20250505223922.2682012-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.12.26 Content-Transfer-Encoding: 8bit From: Ramasamy Kaliappan [ Upstream commit 27d38bdfd416f4db70e09c3bef3b030c86fd235a ] Currently, sometimes, the station is unable to identify the configured AP SSID in its scan results when the AP is not broadcasting its name publicly and has a hidden SSID. Currently, channel dwell time for an ath12k station is 30 ms. Sometimes, station can send broadcast probe request to AP close to the end of dwell time. In some of these cases, before AP sends a response to the received probe request, the dwell time on the station side would come to an end. So, the station will move to scan next channel and will not be able to acknowledge the unicast probe response. Resolve this issue by increasing station's channel dwell time to 70 ms, so that the it remains on the same channel for a longer period. This would increase the station's chance of receiving probe response from the AP. The station will then send a response acknowledgment back to the AP, thus leading to successful scan and BSS discovery. With an increased dwell time, scan would take longer than it takes now. But, this fix is an improvement for hidden SSID scan issue. Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1 Signed-off-by: Ramasamy Kaliappan Signed-off-by: Roopni Devanathan Reviewed-by: Vasanthakumar Thiagarajan Link: https://patch.msgid.link/20250207060005.153835-1-quic_rdevanat@quicinc.com Signed-off-by: Jeff Johnson Signed-off-by: Sasha Levin --- drivers/net/wireless/ath/ath12k/wmi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/ath/ath12k/wmi.c b/drivers/net/wireless/ath/ath12k/wmi.c index a6ba97949440e..30836a09d5506 100644 --- a/drivers/net/wireless/ath/ath12k/wmi.c +++ b/drivers/net/wireless/ath/ath12k/wmi.c @@ -2206,8 +2206,8 @@ void ath12k_wmi_start_scan_init(struct ath12k *ar, arg->dwell_time_active = 50; arg->dwell_time_active_2g = 0; arg->dwell_time_passive = 150; - arg->dwell_time_active_6g = 40; - arg->dwell_time_passive_6g = 30; + arg->dwell_time_active_6g = 70; + arg->dwell_time_passive_6g = 70; arg->min_rest_time = 50; arg->max_rest_time = 500; arg->repeat_probe_time = 0; -- 2.39.5