From patchwork Mon Mar 11 06:28:11 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Miri Korenblit X-Patchwork-Id: 13588309 X-Patchwork-Delegate: johannes@sipsolutions.net Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A124C1428F for ; Mon, 11 Mar 2024 06:28:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.7 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710138532; cv=none; b=FgGQD0I/8pcoCJ4/oplG5+vNmSjPyz4Tx76JdNk0EA2fqn6NzxfGOya7P0QxF3dY0F2ujpaDFngFEvV17ALIG0LswnViFLFH4HunOmf+mWQlPPJdWEN+rTUzXO3Y0s9z10JLC9OShYYSBKRTnBmROq6jTF1tgLA0Yv1xmnwD9B8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710138532; c=relaxed/simple; bh=Rf5BpwF1xL4GFJeiz3F8A+hforaprU1Ck5U3u69cdco=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=J9v2PaH7ZDDFLVsHRiUCUAbXGbpJCuZQZaF8LGagNI9iqGfz63ORZXzeKx6hX+mQsMVwzAy2dfts+AD6f6zA/x8CDuDub2yyhSeHEpKB5uLBMl1pkJwHdNHMvbP4Grw9S1HTqtWBoqdNb/JW5HoKFbY8mAACCTLitWDI+JLlf58= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=YgXSnjqd; arc=none smtp.client-ip=192.198.163.7 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="YgXSnjqd" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1710138531; x=1741674531; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Rf5BpwF1xL4GFJeiz3F8A+hforaprU1Ck5U3u69cdco=; b=YgXSnjqdwWT30Zp4XxGuCbxpENPi3CAdEBA6x4kgan1z7UwMuvL+3ZdD Dj+CMhsj6s1OCyHhBECHG/pywOQcYZzbX+3pEkZKLtjjNod5ra9L8aY8B 1RbMYOZLzEmmtDhYGVnP4mdoYfls4mZYbcFTT/dklWpJ/w4O3CKzzHK45 eAyKHdW54EDT6QWJlBPLcfuS+uUpVqqOTednY9bqXUoqAj3twZL8s9NaC nJthvR8X/90//6A2wmqSjsYh7JTZmGpKKPwfx+/ADYhEGVv28m5OjbfPp w0ZPkSL/J1SzHkVsNbf0pbryW5nZqZJmZuPu+NBeJqrHhCHgGF/WeaSVM g==; X-IronPort-AV: E=McAfee;i="6600,9927,11009"; a="30226793" X-IronPort-AV: E=Sophos;i="6.07,115,1708416000"; d="scan'208";a="30226793" Received: from fmviesa004.fm.intel.com ([10.60.135.144]) by fmvoesa101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Mar 2024 23:28:50 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.07,115,1708416000"; d="scan'208";a="15657719" Received: from unknown (HELO WEIS0040.iil.intel.com) ([10.12.217.108]) by fmviesa004-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Mar 2024 23:28:49 -0700 From: Miri Korenblit To: johannes@sipsolutions.net Cc: linux-wireless@vger.kernel.org, Johannes Berg Subject: [PATCH 11/15] wifi: iwlwifi: mvm: advertise IEEE80211_HW_HANDLES_QUIET_CSA Date: Mon, 11 Mar 2024 08:28:11 +0200 Message-Id: <20240311081938.fa75403b5eaa.Ie3ff02215f810fcfefd6a22c481567f94f61c0c6@changeid> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240311062815.4099838-1-miriam.rachel.korenblit@intel.com> References: <20240311062815.4099838-1-miriam.rachel.korenblit@intel.com> Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Organization: Intel Israel (74) Limited From: Johannes Berg The firmware has handled quiet in CSA for a long time now, but it didn't really matter much. However, now with quiet CSA on a perhaps secondary link, we don't want mac80211 to stop queues, we can continue using a link that's not requiring quiet. Set the feature flag for MLO-capable devices indicating that we'll handle the quiet entirely in the driver/device. However, the firmware doesn't handle quiet in AP mode since we don't really expect to really be needing that (without radar detection), but - even for testing - make that work properly by simply not pulling from TXQs in this scenario. Signed-off-by: Johannes Berg Signed-off-by: Miri Korenblit --- .../net/wireless/intel/iwlwifi/mvm/mac80211.c | 58 ++++++++++++++++++- drivers/net/wireless/intel/iwlwifi/mvm/mvm.h | 7 ++- 2 files changed, 61 insertions(+), 4 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c index 5f8a53a77290..bea40de36b7a 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c @@ -359,8 +359,11 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm) /* Set this early since we need to have it for the check below */ if (mvm->mld_api_is_used && mvm->nvm_data->sku_cap_11be_enable && !iwlwifi_mod_params.disable_11ax && - !iwlwifi_mod_params.disable_11be) + !iwlwifi_mod_params.disable_11be) { hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_MLO; + /* we handle this already earlier, but need it for MLO */ + ieee80211_hw_set(hw, HANDLES_QUIET_CSA); + } /* With MLD FW API, it tracks timing by itself, * no need for any timing from the host @@ -903,6 +906,8 @@ void iwl_mvm_mac_itxq_xmit(struct ieee80211_hw *hw, struct ieee80211_txq *txq) &mvmtxq->state) && !test_bit(IWL_MVM_TXQ_STATE_STOP_REDIRECT, &mvmtxq->state) && + !test_bit(IWL_MVM_TXQ_STATE_STOP_AP_CSA, + &mvmtxq->state) && !test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status))) { skb = ieee80211_tx_dequeue(hw, txq); @@ -1421,6 +1426,20 @@ int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif, return iwl_mvm_send_cmd_pdu(mvm, cmd_id, 0, len, &cmd); } +static void iwl_mvm_post_csa_tx(void *data, struct ieee80211_sta *sta) +{ + struct ieee80211_hw *hw = data; + int i; + + for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { + struct iwl_mvm_txq *mvmtxq = + iwl_mvm_txq_from_mac80211(sta->txq[i]); + + clear_bit(IWL_MVM_TXQ_STATE_STOP_AP_CSA, &mvmtxq->state); + iwl_mvm_mac_itxq_xmit(hw, sta->txq[i]); + } +} + int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_bss_conf *link_conf) @@ -1459,6 +1478,18 @@ int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw, iwl_mvm_stop_session_protection(mvm, vif); } + } else if (vif->type == NL80211_IFTYPE_AP && mvmvif->csa_blocks_tx) { + struct iwl_mvm_txq *mvmtxq = + iwl_mvm_txq_from_mac80211(vif->txq); + + clear_bit(IWL_MVM_TXQ_STATE_STOP_AP_CSA, &mvmtxq->state); + + local_bh_disable(); + iwl_mvm_mac_itxq_xmit(hw, vif->txq); + ieee80211_iterate_stations_atomic(hw, iwl_mvm_post_csa_tx, hw); + local_bh_enable(); + + mvmvif->csa_blocks_tx = false; } mvmvif->ps_disabled = false; @@ -5421,6 +5452,18 @@ static int iwl_mvm_old_pre_chan_sw_sta(struct iwl_mvm *mvm, return 0; } +static void iwl_mvm_csa_block_txqs(void *data, struct ieee80211_sta *sta) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { + struct iwl_mvm_txq *mvmtxq = + iwl_mvm_txq_from_mac80211(sta->txq[i]); + + set_bit(IWL_MVM_TXQ_STATE_STOP_AP_CSA, &mvmtxq->state); + } +} + #define IWL_MAX_CSA_BLOCK_TX 1500 int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw, struct ieee80211_vif *vif, @@ -5429,6 +5472,7 @@ int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw, struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); struct ieee80211_vif *csa_vif; struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); + struct iwl_mvm_txq *mvmtxq; int ret; mutex_lock(&mvm->mutex); @@ -5471,6 +5515,18 @@ int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw, mvmvif->csa_target_freq = chsw->chandef.chan->center_freq; + if (!chsw->block_tx) + break; + /* don't need blocking in driver otherwise - mac80211 will do */ + if (!ieee80211_hw_check(mvm->hw, HANDLES_QUIET_CSA)) + break; + + mvmvif->csa_blocks_tx = true; + mvmtxq = iwl_mvm_txq_from_mac80211(vif->txq); + set_bit(IWL_MVM_TXQ_STATE_STOP_AP_CSA, &mvmtxq->state); + ieee80211_iterate_stations_atomic(mvm->hw, + iwl_mvm_csa_block_txqs, + NULL); break; case NL80211_IFTYPE_STATION: mvmvif->csa_blocks_tx = chsw->block_tx; diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h index ffc8f20700d6..d58cd7d41fe1 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h @@ -759,9 +759,10 @@ struct iwl_mvm_txq { struct list_head list; u16 txq_id; atomic_t tx_request; -#define IWL_MVM_TXQ_STATE_STOP_FULL 0 -#define IWL_MVM_TXQ_STATE_STOP_REDIRECT 1 -#define IWL_MVM_TXQ_STATE_READY 2 +#define IWL_MVM_TXQ_STATE_READY 0 +#define IWL_MVM_TXQ_STATE_STOP_FULL 1 +#define IWL_MVM_TXQ_STATE_STOP_REDIRECT 2 +#define IWL_MVM_TXQ_STATE_STOP_AP_CSA 3 unsigned long state; };