From patchwork Fri Apr 12 06:06:16 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Baochen Qiang X-Patchwork-Id: 788582 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (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 E1E9C3399F for ; Fri, 12 Apr 2024 06:06:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712902010; cv=none; b=REHNkjv1IbjXH3Okr6hTQIPZuAHCcPYiyiTMh4cHTmMooubiQESlr9vRqEB7Q4UEh/AXv6BLa5mvSU/zQL9s3VwTBEtDepYZmAAQ3Gerd7SSPcaPgqcil0DOVg8kbW1cQR16VCbnccESHHI0HxTgkpt0O1yDyftdnxIFwEUm0Xg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712902010; c=relaxed/simple; bh=L4Rn5/XgvRVKZg6u2sfDax0FBWQMnW9M1puRM7ZjYW8=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=VBt7JCvUJGtfgH2Pc+EY5ys1/KC42q7TC2qABMtqX0KM9eR77LCTok679cWMXP1OM0Z7/cxTYEgofN72wjou7EkWc1b+sy542qONVjGbj3v+2+Wzz/jZYmwEQgy4UEB6wCTjRHxLwPXknOL+hbP9p3961LnXk4WV6YMaKal6cao= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=quicinc.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=MX6YAscy; arc=none smtp.client-ip=205.220.168.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="MX6YAscy" Received: from pps.filterd (m0279863.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 43C65roZ020307; Fri, 12 Apr 2024 06:06:46 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding:content-type; s= qcppdkim1; bh=gfinA+RjmJYLiSYf80MMLc8RUHdGXfGNjQXUk4Uhj2E=; b=MX 6YAscyWrNV/RBsPryrT541d+ISyLx9KzW92evztwGU6GdsvhR3e1LUz9YfRwi43A HUqEGAMU6ZA+wFu9AXFbtbF2Cs8Wk25fkTXHgE41fcRU8kz9/gM+81ThJlmRWx37 QGAfwWDqLe5EiF/I5xm72BwE7BToF8aaoIKPt2m/DlTq9xLTscggyys2U4u6ldaS BExZ7eqWzr7m0EjMXRrUyhTYozt+LR7f6WwDoe9dLI2kFA57DyBcu8/zuQTALArj veVMDH9j/d3743AUOSXXOXuVbOJlR5wUzH+5HPzdIZ6QTiDgST3rH9vLgLwtgUjw 7QLnaVbyaQRvv723asSQ== Received: from nalasppmta04.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3xesjbrnea-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 12 Apr 2024 06:06:45 +0000 (GMT) Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA04.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 43C66iBX007189 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 12 Apr 2024 06:06:44 GMT Received: from bqiang-SFF.qca.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Thu, 11 Apr 2024 23:06:43 -0700 From: Baochen Qiang To: CC: , Subject: [PATCH 06/10] wifi: ath12k: flush all packets before suspend Date: Fri, 12 Apr 2024 14:06:16 +0800 Message-ID: <20240412060620.27519-7-quic_bqiang@quicinc.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240412060620.27519-1-quic_bqiang@quicinc.com> References: <20240412060620.27519-1-quic_bqiang@quicinc.com> Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: UXbAuaG1nRJ-i5GvzHDECuJppor5B4rw X-Proofpoint-GUID: UXbAuaG1nRJ-i5GvzHDECuJppor5B4rw X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-04-12_02,2024-04-09_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 mlxlogscore=999 clxscore=1015 phishscore=0 mlxscore=0 impostorscore=0 bulkscore=0 adultscore=0 spamscore=0 malwarescore=0 suspectscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2404010003 definitions=main-2404120042 In order to send out all packets before going to suspend, current code adds a 500ms delay as a workaround. It is a rough estimate and may not work. Fix this by checking packet counters, if counters become zero, then all packets are sent out or dropped. Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0-03427-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.15378.4 Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1 Signed-off-by: Baochen Qiang Acked-by: Jeff Johnson --- drivers/net/wireless/ath/ath12k/core.c | 20 +++++++++++++----- drivers/net/wireless/ath/ath12k/mac.c | 28 ++++++++++++++++++++------ drivers/net/wireless/ath/ath12k/mac.h | 1 + 3 files changed, 38 insertions(+), 11 deletions(-) diff --git a/drivers/net/wireless/ath/ath12k/core.c b/drivers/net/wireless/ath/ath12k/core.c index 28663cf4db30..dfec390b66c6 100644 --- a/drivers/net/wireless/ath/ath12k/core.c +++ b/drivers/net/wireless/ath/ath12k/core.c @@ -44,15 +44,25 @@ static int ath12k_core_rfkill_config(struct ath12k_base *ab) int ath12k_core_suspend(struct ath12k_base *ab) { - int ret; + struct ath12k *ar; + int ret, i; if (!ab->hw_params->supports_suspend) return -EOPNOTSUPP; - /* TODO: there can frames in queues so for now add delay as a hack. - * Need to implement to handle and remove this delay. - */ - msleep(500); + rcu_read_lock(); + for (i = 0; i < ab->num_radios; i++) { + ar = ath12k_mac_get_ar_by_pdev_id(ab, i); + if (!ar) + continue; + ret = ath12k_mac_wait_tx_complete(ar); + if (ret) { + ath12k_warn(ab, "failed to wait tx complete: %d\n", ret); + rcu_read_unlock(); + return ret; + } + } + rcu_read_unlock(); ret = ath12k_dp_rx_pktlog_stop(ab, true); if (ret) { diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c index f15dcd75157d..69c5fd9d2612 100644 --- a/drivers/net/wireless/ath/ath12k/mac.c +++ b/drivers/net/wireless/ath/ath12k/mac.c @@ -7356,22 +7356,38 @@ static int ath12k_mac_op_set_frag_threshold(struct ieee80211_hw *hw, u32 value) return -EOPNOTSUPP; } -static void ath12k_mac_flush(struct ath12k *ar) +static int ath12k_mac_flush(struct ath12k *ar) { long time_left; + int ret = 0; time_left = wait_event_timeout(ar->dp.tx_empty_waitq, (atomic_read(&ar->dp.num_tx_pending) == 0), ATH12K_FLUSH_TIMEOUT); - if (time_left == 0) - ath12k_warn(ar->ab, "failed to flush transmit queue %ld\n", time_left); + if (time_left == 0) { + ath12k_warn(ar->ab, + "failed to flush transmit queue, data pkts pending %d\n", + atomic_read(&ar->dp.num_tx_pending)); + ret = -ETIMEDOUT; + } time_left = wait_event_timeout(ar->txmgmt_empty_waitq, (atomic_read(&ar->num_pending_mgmt_tx) == 0), ATH12K_FLUSH_TIMEOUT); - if (time_left == 0) - ath12k_warn(ar->ab, "failed to flush mgmt transmit queue %ld\n", - time_left); + if (time_left == 0) { + ath12k_warn(ar->ab, + "failed to flush mgmt transmit queue, mgmt pkts pending %d\n", + atomic_read(&ar->num_pending_mgmt_tx)); + ret = -ETIMEDOUT; + } + + return ret; +} + +int ath12k_mac_wait_tx_complete(struct ath12k *ar) +{ + ath12k_mac_drain_tx(ar); + return ath12k_mac_flush(ar); } static void ath12k_mac_op_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif, diff --git a/drivers/net/wireless/ath/ath12k/mac.h b/drivers/net/wireless/ath/ath12k/mac.h index 3f5e1be0dff9..f826822d30c8 100644 --- a/drivers/net/wireless/ath/ath12k/mac.h +++ b/drivers/net/wireless/ath/ath12k/mac.h @@ -78,4 +78,5 @@ enum ath12k_supported_bw ath12k_mac_mac80211_bw_to_ath12k_bw(enum rate_info_bw b enum hal_encrypt_type ath12k_dp_tx_get_encrypt_type(u32 cipher); int ath12k_mac_rfkill_enable_radio(struct ath12k *ar, bool enable); int ath12k_mac_rfkill_config(struct ath12k *ar); +int ath12k_mac_wait_tx_complete(struct ath12k *ar); #endif