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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 19AD3C433EF for ; Tue, 8 Mar 2022 11:54:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=NrpAYrTAlmbHJ46fgUr7E9xPQirYEv8P1wEUh9owbBk=; b=s9pkVTgnnWdSgR wem78p29LyszYhoowzja3IYrgiFcwKDpcZKZg2B2i2e6HimHCIJiXhfADcYDAHM+nYAems3D/Js6y 3LXzBOPfeiaGq8pq30cZvCIOtbjlX9CVYaiYS64e/4ZzkDVci3/lc27eopo6PeFE7OdpaSe0XPUl5 Qyrek+xIYaMGSp9N65Xkbc2KxS+dqC/y2JE1DsZsciP42UUjdau9gT4XiMM81YSS3O2tls1kR884B qDfXMTTRrXgGqO2hyFAGGPKCFJlJjkl2euuhQd86fVXxUnadfC06qExoD2gQHx8y1l/Tr76d9wDbA CqtmEtBLAJ9tIA0fnLzw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nRYPw-004EUu-Dz; Tue, 08 Mar 2022 11:54:16 +0000 Received: from alexa-out.qualcomm.com ([129.46.98.28]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nRYPs-004ETe-C5 for ath10k@lists.infradead.org; Tue, 08 Mar 2022 11:54:13 +0000 Received: from ironmsg07-lv.qualcomm.com ([10.47.202.151]) by alexa-out.qualcomm.com with ESMTP; 08 Mar 2022 03:54:11 -0800 X-QCInternal: smtphost Received: from ironmsg02-blr.qualcomm.com ([10.86.208.131]) by ironmsg07-lv.qualcomm.com with ESMTP/TLS/AES256-SHA; 08 Mar 2022 03:53:42 -0800 X-QCInternal: smtphost Received: from unknown (HELO youghand-linux.qualcomm.com) ([10.206.66.115]) by ironmsg02-blr.qualcomm.com with ESMTP; 08 Mar 2022 17:23:32 +0530 Received: by youghand-linux.qualcomm.com (Postfix, from userid 2370257) id 750E122681; Tue, 8 Mar 2022 17:23:31 +0530 (IST) From: Youghandhar Chintala To: ath10k@lists.infradead.org Cc: linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, pillair@codeaurora.org, dianders@chromium.org, kuabhs@chromium.org, briannorris@chromium.org, mpubbise@codeaurora.org, Youghandhar Chintala Subject: [PATCH v5 2/2] ath10k: Trigger sta disconnect on hardware restart Date: Tue, 8 Mar 2022 17:23:25 +0530 Message-Id: <20220308115325.5246-3-youghand@codeaurora.org> X-Mailer: git-send-email 2.29.0 In-Reply-To: <20220308115325.5246-1-youghand@codeaurora.org> References: <20220308115325.5246-1-youghand@codeaurora.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220308_035412_450828_95E22003 X-CRM114-Status: GOOD ( 12.17 ) X-BeenThere: ath10k@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "ath10k" Errors-To: ath10k-bounces+ath10k=archiver.kernel.org@lists.infradead.org Currently after the hardware restart triggered from the driver, the station interface connection remains intact, since a disconnect trigger is not sent to userspace. This can lead to a problem in targets where the wifi mac sequence is added by the firmware. After the target restart, its wifi mac sequence number gets reset to zero. Hence AP to which our device is connected will receive frames with a wifi mac sequence number jump to the past, thereby resulting in the AP dropping all these frames, until the frame arrives with a wifi mac sequence number which AP was expecting. To avoid such frame drops, its better to trigger a station disconnect upon target hardware restart which can be done with API ieee80211_reconfig_disconnect exposed to mac80211. The other targets are not affected by this change, since the hardware params flag is not set. Tested-on: WCN3990 hw1.0 SNOC WLAN.HL.3.1-01040-QCAHLSWMTPLZ-1 Tested-on: QCA6174 hw3.2 PCI WLAN.RM.4.4.1-00110-QCARMSWP-1 Tested-on: QCA6174 hw3.2 SDIO WLAN.RMH.4.4.1-00048 Signed-off-by: Youghandhar Chintala --- drivers/net/wireless/ath/ath10k/core.c | 25 +++++++++++++++++++++++++ drivers/net/wireless/ath/ath10k/hw.h | 2 ++ 2 files changed, 27 insertions(+) diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c index 9e1f483e1362..2092bfd02cd1 100644 --- a/drivers/net/wireless/ath/ath10k/core.c +++ b/drivers/net/wireless/ath/ath10k/core.c @@ -94,6 +94,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .credit_size_workaround = false, .tx_stats_over_pktlog = true, .dynamic_sar_support = false, + .hw_restart_disconnect = false, }, { .id = QCA988X_HW_2_0_VERSION, @@ -131,6 +132,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .credit_size_workaround = false, .tx_stats_over_pktlog = true, .dynamic_sar_support = false, + .hw_restart_disconnect = false, }, { .id = QCA9887_HW_1_0_VERSION, @@ -169,6 +171,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .credit_size_workaround = false, .tx_stats_over_pktlog = false, .dynamic_sar_support = false, + .hw_restart_disconnect = false, }, { .id = QCA6174_HW_3_2_VERSION, @@ -202,6 +205,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .bmi_large_size_download = true, .supports_peer_stats_info = true, .dynamic_sar_support = true, + .hw_restart_disconnect = false, }, { .id = QCA6174_HW_2_1_VERSION, @@ -239,6 +243,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .credit_size_workaround = false, .tx_stats_over_pktlog = false, .dynamic_sar_support = false, + .hw_restart_disconnect = false, }, { .id = QCA6174_HW_2_1_VERSION, @@ -276,6 +281,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .credit_size_workaround = false, .tx_stats_over_pktlog = false, .dynamic_sar_support = false, + .hw_restart_disconnect = false, }, { .id = QCA6174_HW_3_0_VERSION, @@ -313,6 +319,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .credit_size_workaround = false, .tx_stats_over_pktlog = false, .dynamic_sar_support = false, + .hw_restart_disconnect = false, }, { .id = QCA6174_HW_3_2_VERSION, @@ -354,6 +361,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .tx_stats_over_pktlog = false, .supports_peer_stats_info = true, .dynamic_sar_support = true, + .hw_restart_disconnect = false, }, { .id = QCA99X0_HW_2_0_DEV_VERSION, @@ -397,6 +405,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .credit_size_workaround = false, .tx_stats_over_pktlog = false, .dynamic_sar_support = false, + .hw_restart_disconnect = false, }, { .id = QCA9984_HW_1_0_DEV_VERSION, @@ -447,6 +456,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .credit_size_workaround = false, .tx_stats_over_pktlog = false, .dynamic_sar_support = false, + .hw_restart_disconnect = false, }, { .id = QCA9888_HW_2_0_DEV_VERSION, @@ -494,6 +504,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .credit_size_workaround = false, .tx_stats_over_pktlog = false, .dynamic_sar_support = false, + .hw_restart_disconnect = false, }, { .id = QCA9377_HW_1_0_DEV_VERSION, @@ -531,6 +542,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .credit_size_workaround = false, .tx_stats_over_pktlog = false, .dynamic_sar_support = false, + .hw_restart_disconnect = false, }, { .id = QCA9377_HW_1_1_DEV_VERSION, @@ -570,6 +582,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .credit_size_workaround = false, .tx_stats_over_pktlog = false, .dynamic_sar_support = false, + .hw_restart_disconnect = false, }, { .id = QCA9377_HW_1_1_DEV_VERSION, @@ -600,6 +613,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .uart_pin_workaround = true, .credit_size_workaround = true, .dynamic_sar_support = false, + .hw_restart_disconnect = false, }, { .id = QCA4019_HW_1_0_DEV_VERSION, @@ -644,6 +658,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .credit_size_workaround = false, .tx_stats_over_pktlog = false, .dynamic_sar_support = false, + .hw_restart_disconnect = false, }, { .id = WCN3990_HW_1_0_DEV_VERSION, @@ -674,6 +689,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .credit_size_workaround = false, .tx_stats_over_pktlog = false, .dynamic_sar_support = true, + .hw_restart_disconnect = true, }, }; @@ -2442,6 +2458,7 @@ EXPORT_SYMBOL(ath10k_core_napi_sync_disable); static void ath10k_core_restart(struct work_struct *work) { struct ath10k *ar = container_of(work, struct ath10k, restart_work); + struct ath10k_vif *arvif; int ret; set_bit(ATH10K_FLAG_CRASH_FLUSH, &ar->dev_flags); @@ -2480,6 +2497,14 @@ static void ath10k_core_restart(struct work_struct *work) ar->state = ATH10K_STATE_RESTARTING; ath10k_halt(ar); ath10k_scan_finish(ar); + if (ar->hw_params.hw_restart_disconnect) { + list_for_each_entry(arvif, &ar->arvifs, list) { + if (arvif->is_up && + arvif->vdev_type == WMI_VDEV_TYPE_STA) + ieee80211_hw_restart_disconnect(arvif->vif); + } + } + ieee80211_restart_hw(ar->hw); break; case ATH10K_STATE_OFF: diff --git a/drivers/net/wireless/ath/ath10k/hw.h b/drivers/net/wireless/ath/ath10k/hw.h index 5215a6816d71..93acf0dd580a 100644 --- a/drivers/net/wireless/ath/ath10k/hw.h +++ b/drivers/net/wireless/ath/ath10k/hw.h @@ -633,6 +633,8 @@ struct ath10k_hw_params { bool supports_peer_stats_info; bool dynamic_sar_support; + + bool hw_restart_disconnect; }; struct htt_resp; -- 2.29.0 _______________________________________________ ath10k mailing list ath10k@lists.infradead.org http://lists.infradead.org/mailman/listinfo/ath10k