From patchwork Mon Mar 15 13:53:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 401345 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=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, 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 6EB3AC4332D for ; Mon, 15 Mar 2021 14:04:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 32AFB64F1E for ; Mon, 15 Mar 2021 14:04:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232990AbhCOODz (ORCPT ); Mon, 15 Mar 2021 10:03:55 -0400 Received: from mail.kernel.org ([198.145.29.99]:37500 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233028AbhCOOAe (ORCPT ); Mon, 15 Mar 2021 10:00:34 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 3B8AE64F4B; Mon, 15 Mar 2021 14:00:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1615816813; bh=cVqynOJDFRJZW692g2gKwamZGseGvNVXmtaIOGX8ERg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KjWiQBbKje6iITl5ZEwuywf46tlBQaZPi241V/YFGQLYZVTngOA6fo/AExhYJ95U7 89knkxM9fTW32/xhxjDc6l6SzNvyqqHaHycodm/yqtUOzlUaj0tP0i83+eE7DY9hBa aNfxoTKhqxfOYirCersu0q9BLM/VSctA+rMqiLCs= From: gregkh@linuxfoundation.org To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Ritesh Singh , Maharaja Kennadyrajan , Kalle Valo , Sasha Levin Subject: [PATCH 5.10 128/290] ath11k: peer delete synchronization with firmware Date: Mon, 15 Mar 2021 14:53:41 +0100 Message-Id: <20210315135546.236777857@linuxfoundation.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210315135541.921894249@linuxfoundation.org> References: <20210315135541.921894249@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Greg Kroah-Hartman From: Ritesh Singh [ Upstream commit 690ace20ff790f443c3cbaf12e1769e4eb0072db ] Peer creation in firmware fails, if last peer deletion is still in progress. Hence, add wait for the event after deleting every peer from host driver to synchronize with firmware. Signed-off-by: Ritesh Singh Signed-off-by: Maharaja Kennadyrajan Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/1605514143-17652-3-git-send-email-mkenna@codeaurora.org Signed-off-by: Sasha Levin --- drivers/net/wireless/ath/ath11k/core.c | 1 + drivers/net/wireless/ath/ath11k/core.h | 1 + drivers/net/wireless/ath/ath11k/mac.c | 17 +++++++++- drivers/net/wireless/ath/ath11k/peer.c | 44 ++++++++++++++++++++++++-- drivers/net/wireless/ath/ath11k/peer.h | 2 ++ drivers/net/wireless/ath/ath11k/wmi.c | 17 ++++++++-- 6 files changed, 75 insertions(+), 7 deletions(-) diff --git a/drivers/net/wireless/ath/ath11k/core.c b/drivers/net/wireless/ath/ath11k/core.c index ebd6886a8c18..a68fe3a45a74 100644 --- a/drivers/net/wireless/ath/ath11k/core.c +++ b/drivers/net/wireless/ath/ath11k/core.c @@ -774,6 +774,7 @@ static void ath11k_core_restart(struct work_struct *work) complete(&ar->scan.started); complete(&ar->scan.completed); complete(&ar->peer_assoc_done); + complete(&ar->peer_delete_done); complete(&ar->install_key_done); complete(&ar->vdev_setup_done); complete(&ar->bss_survey_done); diff --git a/drivers/net/wireless/ath/ath11k/core.h b/drivers/net/wireless/ath/ath11k/core.h index 5a7915f75e1e..c8e36251068c 100644 --- a/drivers/net/wireless/ath/ath11k/core.h +++ b/drivers/net/wireless/ath/ath11k/core.h @@ -502,6 +502,7 @@ struct ath11k { u8 lmac_id; struct completion peer_assoc_done; + struct completion peer_delete_done; int install_key_status; struct completion install_key_done; diff --git a/drivers/net/wireless/ath/ath11k/mac.c b/drivers/net/wireless/ath/ath11k/mac.c index b5bd9b06da89..c8f1b786e746 100644 --- a/drivers/net/wireless/ath/ath11k/mac.c +++ b/drivers/net/wireless/ath/ath11k/mac.c @@ -4589,8 +4589,22 @@ static int ath11k_mac_op_add_interface(struct ieee80211_hw *hw, err_peer_del: if (arvif->vdev_type == WMI_VDEV_TYPE_AP) { + reinit_completion(&ar->peer_delete_done); + + ret = ath11k_wmi_send_peer_delete_cmd(ar, vif->addr, + arvif->vdev_id); + if (ret) { + ath11k_warn(ar->ab, "failed to delete peer vdev_id %d addr %pM\n", + arvif->vdev_id, vif->addr); + return ret; + } + + ret = ath11k_wait_for_peer_delete_done(ar, arvif->vdev_id, + vif->addr); + if (ret) + return ret; + ar->num_peers--; - ath11k_wmi_send_peer_delete_cmd(ar, vif->addr, arvif->vdev_id); } err_vdev_del: @@ -6413,6 +6427,7 @@ int ath11k_mac_allocate(struct ath11k_base *ab) mutex_init(&ar->conf_mutex); init_completion(&ar->vdev_setup_done); init_completion(&ar->peer_assoc_done); + init_completion(&ar->peer_delete_done); init_completion(&ar->install_key_done); init_completion(&ar->bss_survey_done); init_completion(&ar->scan.started); diff --git a/drivers/net/wireless/ath/ath11k/peer.c b/drivers/net/wireless/ath/ath11k/peer.c index 61ad9300eafb..1866d82678fa 100644 --- a/drivers/net/wireless/ath/ath11k/peer.c +++ b/drivers/net/wireless/ath/ath11k/peer.c @@ -177,12 +177,36 @@ static int ath11k_wait_for_peer_deleted(struct ath11k *ar, int vdev_id, const u8 return ath11k_wait_for_peer_common(ar->ab, vdev_id, addr, false); } +int ath11k_wait_for_peer_delete_done(struct ath11k *ar, u32 vdev_id, + const u8 *addr) +{ + int ret; + unsigned long time_left; + + ret = ath11k_wait_for_peer_deleted(ar, vdev_id, addr); + if (ret) { + ath11k_warn(ar->ab, "failed wait for peer deleted"); + return ret; + } + + time_left = wait_for_completion_timeout(&ar->peer_delete_done, + 3 * HZ); + if (time_left == 0) { + ath11k_warn(ar->ab, "Timeout in receiving peer delete response\n"); + return -ETIMEDOUT; + } + + return 0; +} + int ath11k_peer_delete(struct ath11k *ar, u32 vdev_id, u8 *addr) { int ret; lockdep_assert_held(&ar->conf_mutex); + reinit_completion(&ar->peer_delete_done); + ret = ath11k_wmi_send_peer_delete_cmd(ar, addr, vdev_id); if (ret) { ath11k_warn(ar->ab, @@ -191,7 +215,7 @@ int ath11k_peer_delete(struct ath11k *ar, u32 vdev_id, u8 *addr) return ret; } - ret = ath11k_wait_for_peer_deleted(ar, vdev_id, addr); + ret = ath11k_wait_for_peer_delete_done(ar, vdev_id, addr); if (ret) return ret; @@ -247,8 +271,22 @@ int ath11k_peer_create(struct ath11k *ar, struct ath11k_vif *arvif, spin_unlock_bh(&ar->ab->base_lock); ath11k_warn(ar->ab, "failed to find peer %pM on vdev %i after creation\n", param->peer_addr, param->vdev_id); - ath11k_wmi_send_peer_delete_cmd(ar, param->peer_addr, - param->vdev_id); + + reinit_completion(&ar->peer_delete_done); + + ret = ath11k_wmi_send_peer_delete_cmd(ar, param->peer_addr, + param->vdev_id); + if (ret) { + ath11k_warn(ar->ab, "failed to delete peer vdev_id %d addr %pM\n", + param->vdev_id, param->peer_addr); + return ret; + } + + ret = ath11k_wait_for_peer_delete_done(ar, param->vdev_id, + param->peer_addr); + if (ret) + return ret; + return -ENOENT; } diff --git a/drivers/net/wireless/ath/ath11k/peer.h b/drivers/net/wireless/ath/ath11k/peer.h index 5d125ce8984e..bba2e00b6944 100644 --- a/drivers/net/wireless/ath/ath11k/peer.h +++ b/drivers/net/wireless/ath/ath11k/peer.h @@ -41,5 +41,7 @@ void ath11k_peer_cleanup(struct ath11k *ar, u32 vdev_id); int ath11k_peer_delete(struct ath11k *ar, u32 vdev_id, u8 *addr); int ath11k_peer_create(struct ath11k *ar, struct ath11k_vif *arvif, struct ieee80211_sta *sta, struct peer_create_params *param); +int ath11k_wait_for_peer_delete_done(struct ath11k *ar, u32 vdev_id, + const u8 *addr); #endif /* _PEER_H_ */ diff --git a/drivers/net/wireless/ath/ath11k/wmi.c b/drivers/net/wireless/ath/ath11k/wmi.c index 04b8b002edfe..173ab6ceed1f 100644 --- a/drivers/net/wireless/ath/ath11k/wmi.c +++ b/drivers/net/wireless/ath/ath11k/wmi.c @@ -5532,15 +5532,26 @@ static int ath11k_ready_event(struct ath11k_base *ab, struct sk_buff *skb) static void ath11k_peer_delete_resp_event(struct ath11k_base *ab, struct sk_buff *skb) { struct wmi_peer_delete_resp_event peer_del_resp; + struct ath11k *ar; if (ath11k_pull_peer_del_resp_ev(ab, skb, &peer_del_resp) != 0) { ath11k_warn(ab, "failed to extract peer delete resp"); return; } - /* TODO: Do we need to validate whether ath11k_peer_find() return NULL - * Why this is needed when there is HTT event for peer delete - */ + rcu_read_lock(); + ar = ath11k_mac_get_ar_by_vdev_id(ab, peer_del_resp.vdev_id); + if (!ar) { + ath11k_warn(ab, "invalid vdev id in peer delete resp ev %d", + peer_del_resp.vdev_id); + rcu_read_unlock(); + return; + } + + complete(&ar->peer_delete_done); + rcu_read_unlock(); + ath11k_dbg(ab, ATH11K_DBG_WMI, "peer delete resp for vdev id %d addr %pM\n", + peer_del_resp.vdev_id, peer_del_resp.peer_macaddr.addr); } static inline const char *ath11k_wmi_vdev_resp_print(u32 vdev_resp_status)