From patchwork Fri Feb 5 09:06:42 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luca Coelho X-Patchwork-Id: 377408 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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, 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 E1AD2C433DB for ; Fri, 5 Feb 2021 09:23:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AAD2564F87 for ; Fri, 5 Feb 2021 09:23:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229608AbhBEJXS (ORCPT ); Fri, 5 Feb 2021 04:23:18 -0500 Received: from paleale.coelho.fi ([176.9.41.70]:43812 "EHLO farmhouse.coelho.fi" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S230133AbhBEJQD (ORCPT ); Fri, 5 Feb 2021 04:16:03 -0500 Received: from 91-156-6-193.elisa-laajakaista.fi ([91.156.6.193] helo=redipa.ger.corp.intel.com) by farmhouse.coelho.fi with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.93) (envelope-from ) id 1l7x4o-0044i1-TG; Fri, 05 Feb 2021 11:06:55 +0200 From: Luca Coelho To: kvalo@codeaurora.org Cc: linux-wireless@vger.kernel.org Date: Fri, 5 Feb 2021 11:06:42 +0200 Message-Id: X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210205090642.1553849-1-luca@coelho.fi> References: <20210205090642.1553849-1-luca@coelho.fi> MIME-Version: 1.0 Subject: [RESEND PATCH 12/12] iwlwifi: mvm: fix CSA AP side Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Emmanuel Grumbach Once the all the stations completed the switch, we need to clear csa_tx_blocked_vif. This was missing. We also need to re-enable the broadcast / multicast stations. Signed-off-by: Emmanuel Grumbach Signed-off-by: Luca Coelho --- drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c | 31 +++++++++++++++++++ drivers/net/wireless/intel/iwlwifi/mvm/sta.c | 11 ++++--- 2 files changed, 37 insertions(+), 5 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c b/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c index 7b0b7d191fc5..c21736f80c29 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c @@ -1634,6 +1634,23 @@ static inline u8 iwl_mvm_nl80211_band_from_rx_msdu(u8 phy_band) } } +struct iwl_rx_sta_csa { + bool all_sta_unblocked; + struct ieee80211_vif *vif; +}; + +static void iwl_mvm_rx_get_sta_block_tx(void *data, struct ieee80211_sta *sta) +{ + struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); + struct iwl_rx_sta_csa *rx_sta_csa = data; + + if (mvmsta->vif != rx_sta_csa->vif) + return; + + if (mvmsta->disable_tx) + rx_sta_csa->all_sta_unblocked = false; +} + void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi, struct iwl_rx_cmd_buffer *rxb, int queue) { @@ -1863,10 +1880,24 @@ void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi, if (unlikely(tx_blocked_vif) && tx_blocked_vif == vif) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif); + struct iwl_rx_sta_csa rx_sta_csa = { + .all_sta_unblocked = true, + .vif = tx_blocked_vif, + }; if (mvmvif->csa_target_freq == rx_status->freq) iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, false); + ieee80211_iterate_stations_atomic(mvm->hw, + iwl_mvm_rx_get_sta_block_tx, + &rx_sta_csa); + + if (rx_sta_csa.all_sta_unblocked) { + RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); + /* Unblock BCAST / MCAST station */ + iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false); + cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork); + } } rs_update_last_rssi(mvm, mvmsta, rx_status); diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c index 2050cb4a0d18..4a8a15dbb1a4 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause /* - * Copyright (C) 2012-2015, 2018-2020 Intel Corporation + * Copyright (C) 2012-2015, 2018-2021 Intel Corporation * Copyright (C) 2013-2015 Intel Mobile Communications GmbH * Copyright (C) 2016-2017 Intel Deutschland GmbH */ @@ -3811,7 +3811,7 @@ static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm, }; int ret; - ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 0, + ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, iwl_mvm_add_sta_cmd_size(mvm), &cmd); if (ret) IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); @@ -3825,12 +3825,11 @@ void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvm_sta; int i; - lockdep_assert_held(&mvm->mutex); + rcu_read_lock(); /* Block/unblock all the stations of the given mvmvif */ for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) { - sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], - lockdep_is_held(&mvm->mutex)); + sta = rcu_dereference(mvm->fw_id_to_mac_id[i]); if (IS_ERR_OR_NULL(sta)) continue; @@ -3842,6 +3841,8 @@ void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); } + rcu_read_unlock(); + if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) return;