From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7C8ADC433E0 for ; Fri, 26 Jun 2020 18:54:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 612EB2088E for ; Fri, 26 Jun 2020 18:54:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="miAcQgp+" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725921AbgFZSyG (ORCPT ); Fri, 26 Jun 2020 14:54:06 -0400 Received: from mail29.static.mailgun.info ([104.130.122.29]:45294 "EHLO mail29.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725880AbgFZSyE (ORCPT ); Fri, 26 Jun 2020 14:54:04 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1593197643; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=Q3jdndKvBM7Tubrsk8mP7bJlc5lc7sbPttGkG/ZVwYo=; b=miAcQgp+OqgoknAgI6K0cSBPP3QTOhhIXT78YFkhfbTU0Usdj6yrYRR46CXzVY44MkinGa4V eG2LwzV3ut+7NDnvVq0tocL5keJyKjSy74Z9DYAjIh4oisQE8T6Ig9zh4M2PdO4Zop7VCze6 xoYtPTtOFKwTZoBxU75RnAD37iw= X-Mailgun-Sending-Ip: 104.130.122.29 X-Mailgun-Sid: WyI0MWYwYSIsICJsaW51eC1rZXJuZWxAdmdlci5rZXJuZWwub3JnIiwgImJlOWU0YSJd Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n08.prod.us-west-2.postgun.com with SMTP id 5ef6444ae144dd5115bb3b14 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Fri, 26 Jun 2020 18:54:02 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id BAEBBC433CA; Fri, 26 Jun 2020 18:54:02 +0000 (UTC) Received: from pillair-linux.qualcomm.com (blr-c-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.19.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: pillair) by smtp.codeaurora.org (Postfix) with ESMTPSA id 253B2C433CB; Fri, 26 Jun 2020 18:53:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 253B2C433CB Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=pillair@codeaurora.org From: Rakesh Pillai To: ath10k@lists.infradead.org Cc: linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, Rakesh Pillai Subject: [PATCH v2 1/2] ath10k: Pause the tx queues when firmware is down Date: Sat, 27 Jun 2020 00:23:52 +0530 Message-Id: <1593197633-9014-2-git-send-email-pillair@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1593197633-9014-1-git-send-email-pillair@codeaurora.org> References: <1593197633-9014-1-git-send-email-pillair@codeaurora.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org When the FW goes down, the transmission of packets cannot be done. Currently we are not pausing the tx queues, hence there will be too many attempts to trasmit packets and each of them resulting in failure and thereby logging unwanted failure messages onto the console, as shown below [ 60.842192] ath10k_snoc 18800000.wifi: failed to transmit packet, dropping: -108 [ 60.850181] ath10k_snoc 18800000.wifi: failed to submit frame: -108 [ 60.857058] ath10k_snoc 18800000.wifi: failed to push frame: -108 [ 60.936217] ath10k_snoc 18800000.wifi: failed to transmit packet, dropping: -108 [ 60.944496] ath10k_snoc 18800000.wifi: failed to submit frame: -108 [ 60.951265] ath10k_snoc 18800000.wifi: failed to push frame: -108 [ 61.976589] ath10k_snoc 18800000.wifi: failed to transmit packet, dropping: -108 Stop the tx queues when the wlan firmware is down and also remove the unwanted duplicate/extra logging in the packet transmission path. Tested-on: WCN3990 hw1.0 SNOC WLAN.HL.3.1-01040-QCAHLSWMTPLZ-1 Signed-off-by: Rakesh Pillai --- drivers/net/wireless/ath/ath10k/core.h | 1 + drivers/net/wireless/ath/ath10k/mac.c | 18 ++++++++++-------- drivers/net/wireless/ath/ath10k/snoc.c | 3 +++ 3 files changed, 14 insertions(+), 8 deletions(-) diff --git a/drivers/net/wireless/ath/ath10k/core.h b/drivers/net/wireless/ath/ath10k/core.h index 62b1502..040053a 100644 --- a/drivers/net/wireless/ath/ath10k/core.h +++ b/drivers/net/wireless/ath/ath10k/core.h @@ -900,6 +900,7 @@ static inline const char *ath10k_scan_state_str(enum ath10k_scan_state state) enum ath10k_tx_pause_reason { ATH10K_TX_PAUSE_Q_FULL, + ATH10K_TX_PAUSE_FW_DOWN, ATH10K_TX_PAUSE_MAX, }; diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index 3e38962..dc7befc 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -3348,6 +3348,7 @@ void ath10k_mac_tx_lock(struct ath10k *ar, int reason) ar->tx_paused |= BIT(reason); ieee80211_stop_queues(ar->hw); } +EXPORT_SYMBOL(ath10k_mac_tx_lock); static void ath10k_mac_tx_unlock_iter(void *data, u8 *mac, struct ieee80211_vif *vif) @@ -3378,6 +3379,7 @@ void ath10k_mac_tx_unlock(struct ath10k *ar, int reason) ieee80211_wake_queue(ar->hw, ar->hw->offchannel_tx_hw_queue); } +EXPORT_SYMBOL(ath10k_mac_tx_unlock); void ath10k_mac_vif_tx_lock(struct ath10k_vif *arvif, int reason) { @@ -3748,11 +3750,8 @@ static int ath10k_mac_tx_submit(struct ath10k *ar, break; } - if (ret) { - ath10k_warn(ar, "failed to transmit packet, dropping: %d\n", - ret); + if (ret) ieee80211_free_txskb(ar->hw, skb); - } return ret; } @@ -3806,10 +3805,8 @@ static int ath10k_mac_tx(struct ath10k *ar, } ret = ath10k_mac_tx_submit(ar, txmode, txpath, skb); - if (ret) { - ath10k_warn(ar, "failed to submit frame: %d\n", ret); + if (ret) return ret; - } return 0; } @@ -4441,7 +4438,12 @@ static void ath10k_mac_op_tx(struct ieee80211_hw *hw, ret = ath10k_mac_tx(ar, vif, txmode, txpath, skb, false); if (ret) { - ath10k_warn(ar, "failed to transmit frame: %d\n", ret); + if (ret == -ESHUTDOWN) + ath10k_dbg(ar, ATH10K_DBG_MAC, "failed to transmit frame: %d\n", + ret); + else + ath10k_warn(ar, "failed to transmit frame: %d\n", ret); + if (is_htt) { spin_lock_bh(&ar->htt.tx_lock); ath10k_htt_tx_dec_pending(htt); diff --git a/drivers/net/wireless/ath/ath10k/snoc.c b/drivers/net/wireless/ath/ath10k/snoc.c index 407a074..8440e64 100644 --- a/drivers/net/wireless/ath/ath10k/snoc.c +++ b/drivers/net/wireless/ath/ath10k/snoc.c @@ -20,6 +20,7 @@ #include "hif.h" #include "htc.h" #include "snoc.h" +#include "mac.h" #define ATH10K_SNOC_RX_POST_RETRY_MS 50 #define CE_POLL_PIPE 4 @@ -1296,6 +1297,7 @@ int ath10k_snoc_fw_indication(struct ath10k *ar, u64 type) switch (type) { case ATH10K_QMI_EVENT_FW_READY_IND: if (test_bit(ATH10K_SNOC_FLAG_REGISTERED, &ar_snoc->flags)) { + ath10k_mac_tx_unlock(ar, ATH10K_TX_PAUSE_FW_DOWN); queue_work(ar->workqueue, &ar->restart_work); break; } @@ -1313,6 +1315,7 @@ int ath10k_snoc_fw_indication(struct ath10k *ar, u64 type) case ATH10K_QMI_EVENT_FW_DOWN_IND: set_bit(ATH10K_SNOC_FLAG_RECOVERY, &ar_snoc->flags); set_bit(ATH10K_FLAG_CRASH_FLUSH, &ar->dev_flags); + ath10k_mac_tx_lock(ar, ATH10K_TX_PAUSE_FW_DOWN); break; default: ath10k_err(ar, "invalid fw indication: %llx\n", type); -- 2.7.4