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=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,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 1B479C433DF for ; Fri, 19 Jun 2020 15:51:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E6ED420706 for ; Fri, 19 Jun 2020 15:51:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592581892; bh=rk/rSu5z7lK0zSsEOAg//rzkKrp0TFlxssmYb1LTR0o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ez+G5y0rCyqGRjrbv+cccs6ChUnBTYSYUplqlMAFBXq3jotvqWkhesMJhFCIo+erH fRXIF5uoOSRkJSBxZ4At1GmxLuDp2n4zGG3ujbAvKcfSF5uiNAUQSek2CchKbpLKsR 7f8Czld3Af/xaCaKFCfMSHANdZPI6HwSfeqTWBJw= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404372AbgFSPv3 (ORCPT ); Fri, 19 Jun 2020 11:51:29 -0400 Received: from mail.kernel.org ([198.145.29.99]:55694 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2392698AbgFSPYD (ORCPT ); Fri, 19 Jun 2020 11:24:03 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 92D8521927; Fri, 19 Jun 2020 15:24:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592580242; bh=rk/rSu5z7lK0zSsEOAg//rzkKrp0TFlxssmYb1LTR0o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QLrj5Qih8h1NgkmChGDfg9pgtYHKK2PkyS9hNHyAvWhnD/RzUk41IsjZxhmSgObuF 46M2z+s4WwKVkaBC373AMS19iEb6rSIqvgvYKGuMOjlu2Fq/DcFh5qndHhh/UZaOMN UIs5YiptBa0v2Q+uYuYkuyotLY7f2gWiVFxcUGdQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Rakesh Pillai , Kalle Valo , Sasha Levin Subject: [PATCH 5.7 174/376] ath10k: Remove msdu from idr when management pkt send fails Date: Fri, 19 Jun 2020 16:31:32 +0200 Message-Id: <20200619141718.568194304@linuxfoundation.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200619141710.350494719@linuxfoundation.org> References: <20200619141710.350494719@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Rakesh Pillai [ Upstream commit c730c477176ad4af86d9aae4d360a7ad840b073a ] Currently when the sending of any management pkt via wmi command fails, the packet is being unmapped freed in the error handling. But the idr entry added, which is used to track these packet is not getting removed. Hence, during unload, in wmi cleanup, all the entries in IDR are removed and the corresponding buffer is attempted to be freed. This can cause a situation where one packet is attempted to be freed twice. Fix this error by rmeoving the msdu from the idr list when the sending of a management packet over wmi fails. Tested HW: WCN3990 Tested FW: WLAN.HL.3.1-01040-QCAHLSWMTPLZ-1 Fixes: 1807da49733e ("ath10k: wmi: add management tx by reference support over wmi") Signed-off-by: Rakesh Pillai Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/1588667015-25490-1-git-send-email-pillair@codeaurora.org Signed-off-by: Sasha Levin --- drivers/net/wireless/ath/ath10k/mac.c | 3 +++ drivers/net/wireless/ath/ath10k/wmi-ops.h | 10 ++++++++++ drivers/net/wireless/ath/ath10k/wmi-tlv.c | 15 +++++++++++++++ 3 files changed, 28 insertions(+) diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index 70331ca9e50e..7b60d8d6bfa9 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -3921,6 +3921,9 @@ void ath10k_mgmt_over_wmi_tx_work(struct work_struct *work) if (ret) { ath10k_warn(ar, "failed to transmit management frame by ref via WMI: %d\n", ret); + /* remove this msdu from idr tracking */ + ath10k_wmi_cleanup_mgmt_tx_send(ar, skb); + dma_unmap_single(ar->dev, paddr, skb->len, DMA_TO_DEVICE); ieee80211_free_txskb(ar->hw, skb); diff --git a/drivers/net/wireless/ath/ath10k/wmi-ops.h b/drivers/net/wireless/ath/ath10k/wmi-ops.h index 1491c25518bb..edccabc667e8 100644 --- a/drivers/net/wireless/ath/ath10k/wmi-ops.h +++ b/drivers/net/wireless/ath/ath10k/wmi-ops.h @@ -133,6 +133,7 @@ struct wmi_ops { struct sk_buff *(*gen_mgmt_tx_send)(struct ath10k *ar, struct sk_buff *skb, dma_addr_t paddr); + int (*cleanup_mgmt_tx_send)(struct ath10k *ar, struct sk_buff *msdu); struct sk_buff *(*gen_dbglog_cfg)(struct ath10k *ar, u64 module_enable, u32 log_level); struct sk_buff *(*gen_pktlog_enable)(struct ath10k *ar, u32 filter); @@ -441,6 +442,15 @@ ath10k_wmi_get_txbf_conf_scheme(struct ath10k *ar) return ar->wmi.ops->get_txbf_conf_scheme(ar); } +static inline int +ath10k_wmi_cleanup_mgmt_tx_send(struct ath10k *ar, struct sk_buff *msdu) +{ + if (!ar->wmi.ops->cleanup_mgmt_tx_send) + return -EOPNOTSUPP; + + return ar->wmi.ops->cleanup_mgmt_tx_send(ar, msdu); +} + static inline int ath10k_wmi_mgmt_tx_send(struct ath10k *ar, struct sk_buff *msdu, dma_addr_t paddr) diff --git a/drivers/net/wireless/ath/ath10k/wmi-tlv.c b/drivers/net/wireless/ath/ath10k/wmi-tlv.c index 4e68debda9bf..4a3e169965ae 100644 --- a/drivers/net/wireless/ath/ath10k/wmi-tlv.c +++ b/drivers/net/wireless/ath/ath10k/wmi-tlv.c @@ -2897,6 +2897,18 @@ ath10k_wmi_tlv_op_gen_request_stats(struct ath10k *ar, u32 stats_mask) return skb; } +static int +ath10k_wmi_tlv_op_cleanup_mgmt_tx_send(struct ath10k *ar, + struct sk_buff *msdu) +{ + struct ath10k_skb_cb *cb = ATH10K_SKB_CB(msdu); + struct ath10k_wmi *wmi = &ar->wmi; + + idr_remove(&wmi->mgmt_pending_tx, cb->msdu_id); + + return 0; +} + static int ath10k_wmi_mgmt_tx_alloc_msdu_id(struct ath10k *ar, struct sk_buff *skb, dma_addr_t paddr) @@ -2971,6 +2983,8 @@ ath10k_wmi_tlv_op_gen_mgmt_tx_send(struct ath10k *ar, struct sk_buff *msdu, if (desc_id < 0) goto err_free_skb; + cb->msdu_id = desc_id; + ptr = (void *)skb->data; tlv = ptr; tlv->tag = __cpu_to_le16(WMI_TLV_TAG_STRUCT_MGMT_TX_CMD); @@ -4419,6 +4433,7 @@ static const struct wmi_ops wmi_tlv_ops = { .gen_force_fw_hang = ath10k_wmi_tlv_op_gen_force_fw_hang, /* .gen_mgmt_tx = not implemented; HTT is used */ .gen_mgmt_tx_send = ath10k_wmi_tlv_op_gen_mgmt_tx_send, + .cleanup_mgmt_tx_send = ath10k_wmi_tlv_op_cleanup_mgmt_tx_send, .gen_dbglog_cfg = ath10k_wmi_tlv_op_gen_dbglog_cfg, .gen_pktlog_enable = ath10k_wmi_tlv_op_gen_pktlog_enable, .gen_pktlog_disable = ath10k_wmi_tlv_op_gen_pktlog_disable, -- 2.25.1