From patchwork Tue Nov 26 21:46:59 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Theil X-Patchwork-Id: 11263101 X-Patchwork-Delegate: nbd@nbd.name Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BD44713A4 for ; Tue, 26 Nov 2019 21:47:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9ACB920678 for ; Tue, 26 Nov 2019 21:47:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726180AbfKZVrT (ORCPT ); Tue, 26 Nov 2019 16:47:19 -0500 Received: from smail.rz.tu-ilmenau.de ([141.24.186.67]:46386 "EHLO smail.rz.tu-ilmenau.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726033AbfKZVrS (ORCPT ); Tue, 26 Nov 2019 16:47:18 -0500 Received: from localhost.localdomain (unknown [141.24.207.101]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smail.rz.tu-ilmenau.de (Postfix) with ESMTPSA id E3E9D58007C; Tue, 26 Nov 2019 22:47:16 +0100 (CET) From: Markus Theil To: nbd@nbd.name Cc: linux-wireless@vger.kernel.org, lorenzo.bianconi@redhat.com, Stanislaw Gruszka , Markus Theil Subject: [PATCH v9 1/6] mt76: mt76x02: ommit beacon slot clearing Date: Tue, 26 Nov 2019 22:46:59 +0100 Message-Id: <20191126214704.27297-2-markus.theil@tu-ilmenau.de> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191126214704.27297-1-markus.theil@tu-ilmenau.de> References: <20191126214704.27297-1-markus.theil@tu-ilmenau.de> MIME-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org mt76 hw does not send beacons from beacon slots, if the corresponding bitmask is set accordingly. Therefore we can ommit clearing the beacon memory. Clearing uses many usb calls, if usb drivers are used. These calls unnecessarily slow down the beacon tasklet. Thanks to Stanislaw Gruzska for pointing this out. Signed-off-by: Markus Theil --- drivers/net/wireless/mediatek/mt76/mt76x02_beacon.c | 8 -------- 1 file changed, 8 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02_beacon.c b/drivers/net/wireless/mediatek/mt76/mt76x02_beacon.c index 4209209ac940..403866496640 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x02_beacon.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x02_beacon.c @@ -58,8 +58,6 @@ __mt76x02_mac_set_beacon(struct mt76x02_dev *dev, u8 bcn_idx, dev->beacon_data_mask |= BIT(bcn_idx); } else { dev->beacon_data_mask &= ~BIT(bcn_idx); - for (i = 0; i < beacon_len; i += 4) - mt76_wr(dev, beacon_addr + i, 0); } mt76_wr(dev, MT_BCN_BYPASS_MASK, 0xff00 | ~dev->beacon_data_mask); @@ -241,17 +239,11 @@ EXPORT_SYMBOL_GPL(mt76x02_enqueue_buffered_bc); void mt76x02_init_beacon_config(struct mt76x02_dev *dev) { - int i; - mt76_clear(dev, MT_BEACON_TIME_CFG, (MT_BEACON_TIME_CFG_TIMER_EN | MT_BEACON_TIME_CFG_TBTT_EN | MT_BEACON_TIME_CFG_BEACON_TX)); mt76_set(dev, MT_BEACON_TIME_CFG, MT_BEACON_TIME_CFG_SYNC_MODE); mt76_wr(dev, MT_BCN_BYPASS_MASK, 0xffff); - - for (i = 0; i < 8; i++) - mt76x02_mac_set_beacon(dev, i, NULL); - mt76x02_set_beacon_offsets(dev); } EXPORT_SYMBOL_GPL(mt76x02_init_beacon_config); From patchwork Tue Nov 26 21:47:00 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Theil X-Patchwork-Id: 11263099 X-Patchwork-Delegate: nbd@nbd.name Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id F2C5917F0 for ; Tue, 26 Nov 2019 21:47:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D26D02064B for ; Tue, 26 Nov 2019 21:47:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727047AbfKZVrY (ORCPT ); Tue, 26 Nov 2019 16:47:24 -0500 Received: from smail.rz.tu-ilmenau.de ([141.24.186.67]:46390 "EHLO smail.rz.tu-ilmenau.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726504AbfKZVrU (ORCPT ); Tue, 26 Nov 2019 16:47:20 -0500 Received: from localhost.localdomain (unknown [141.24.207.101]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smail.rz.tu-ilmenau.de (Postfix) with ESMTPSA id F281F58007D; Tue, 26 Nov 2019 22:47:16 +0100 (CET) From: Markus Theil To: nbd@nbd.name Cc: linux-wireless@vger.kernel.org, lorenzo.bianconi@redhat.com, Stanislaw Gruszka , Markus Theil Subject: [PATCH v9 2/6] mt76: mt76x02: split beaconing Date: Tue, 26 Nov 2019 22:47:00 +0100 Message-Id: <20191126214704.27297-3-markus.theil@tu-ilmenau.de> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191126214704.27297-1-markus.theil@tu-ilmenau.de> References: <20191126214704.27297-1-markus.theil@tu-ilmenau.de> MIME-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Sending beacons to the hardware always happens in batches. In order to speed up beacon processing on usb devices, this patch splits out common code an calls it only once (mt76x02_mac_set_beacon_prepare, mt76x02_mac_set_beacon_finish). Beacons are sequentially written into the beacon memory area, by tracking its usage with the dev->beacon_data_mask. MBSS support is fixed by reversing the beacon_data_mask when setting it inverted as the bypass mask. The code is also adapted for the mmio part of the driver, but should not have any performance implication there. MBSS tests were performed with AVM AC860 USB NIC with temporary support for 5 BSS'. Different combinations of active vifs were created and brought up. Afterwards connection and data transfer was tested for the announced BSS'. Signed-off-by: Markus Theil --- drivers/net/wireless/mediatek/mt76/mt76x02.h | 3 +- .../wireless/mediatek/mt76/mt76x02_beacon.c | 69 ++++++------------- .../net/wireless/mediatek/mt76/mt76x02_mac.c | 2 + .../net/wireless/mediatek/mt76/mt76x02_mac.h | 5 +- .../net/wireless/mediatek/mt76/mt76x02_mmio.c | 4 ++ .../wireless/mediatek/mt76/mt76x02_usb_core.c | 14 ++-- 6 files changed, 38 insertions(+), 59 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02.h b/drivers/net/wireless/mediatek/mt76/mt76x02.h index 0ca0bbfe8769..ee87c5f30e81 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x02.h +++ b/drivers/net/wireless/mediatek/mt76/mt76x02.h @@ -93,8 +93,7 @@ struct mt76x02_dev { const struct mt76x02_beacon_ops *beacon_ops; - struct sk_buff *beacons[8]; - u8 beacon_data_mask; + u8 beacon_data_count; u8 tbtt_count; diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02_beacon.c b/drivers/net/wireless/mediatek/mt76/mt76x02_beacon.c index 403866496640..1c4bdf88f712 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x02_beacon.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x02_beacon.c @@ -40,62 +40,36 @@ mt76x02_write_beacon(struct mt76x02_dev *dev, int offset, struct sk_buff *skb) return 0; } -static int -__mt76x02_mac_set_beacon(struct mt76x02_dev *dev, u8 bcn_idx, - struct sk_buff *skb) +void mt76x02_mac_set_beacon_prepare(struct mt76x02_dev *dev) { - int beacon_len = dev->beacon_ops->slot_size; - int beacon_addr = MT_BEACON_BASE + (beacon_len * bcn_idx); - int ret = 0; - int i; - /* Prevent corrupt transmissions during update */ - mt76_set(dev, MT_BCN_BYPASS_MASK, BIT(bcn_idx)); - - if (skb) { - ret = mt76x02_write_beacon(dev, beacon_addr, skb); - if (!ret) - dev->beacon_data_mask |= BIT(bcn_idx); - } else { - dev->beacon_data_mask &= ~BIT(bcn_idx); - } - - mt76_wr(dev, MT_BCN_BYPASS_MASK, 0xff00 | ~dev->beacon_data_mask); + mt76_set(dev, MT_BCN_BYPASS_MASK, 0xffff); + dev->beacon_data_count = 0; +} +EXPORT_SYMBOL_GPL(mt76x02_mac_set_beacon_prepare); - return ret; +void mt76x02_mac_set_beacon_finish(struct mt76x02_dev *dev) +{ + mt76_wr(dev, MT_BCN_BYPASS_MASK, + 0xff00 | ~(0xff00 >> dev->beacon_data_count)); } +EXPORT_SYMBOL_GPL(mt76x02_mac_set_beacon_finish); -int mt76x02_mac_set_beacon(struct mt76x02_dev *dev, u8 vif_idx, +int mt76x02_mac_set_beacon(struct mt76x02_dev *dev, struct sk_buff *skb) { - bool force_update = false; - int bcn_idx = 0; - int i; - - for (i = 0; i < ARRAY_SIZE(dev->beacons); i++) { - if (vif_idx == i) { - force_update = !!dev->beacons[i] ^ !!skb; - dev_kfree_skb(dev->beacons[i]); - dev->beacons[i] = skb; - __mt76x02_mac_set_beacon(dev, bcn_idx, skb); - } else if (force_update && dev->beacons[i]) { - __mt76x02_mac_set_beacon(dev, bcn_idx, - dev->beacons[i]); - } - - bcn_idx += !!dev->beacons[i]; - } - - for (i = bcn_idx; i < ARRAY_SIZE(dev->beacons); i++) { - if (!(dev->beacon_data_mask & BIT(i))) - break; + int bcn_len = dev->beacon_ops->slot_size; + int bcn_addr = MT_BEACON_BASE + (bcn_len * dev->beacon_data_count); + int ret = 0; - __mt76x02_mac_set_beacon(dev, i, NULL); + if (skb) { + ret = mt76x02_write_beacon(dev, bcn_addr, skb); + if (!ret) + dev->beacon_data_count++; } - mt76_rmw_field(dev, MT_MAC_BSSID_DW1, MT_MAC_BSSID_DW1_MBEACON_N, - bcn_idx - 1); - return 0; + dev_kfree_skb(skb); + return ret; } EXPORT_SYMBOL_GPL(mt76x02_mac_set_beacon); @@ -114,7 +88,6 @@ void mt76x02_mac_set_beacon_enable(struct mt76x02_dev *dev, dev->mt76.beacon_mask |= BIT(mvif->idx); } else { dev->mt76.beacon_mask &= ~BIT(mvif->idx); - mt76x02_mac_set_beacon(dev, mvif->idx, NULL); } if (!!old_mask == !!dev->mt76.beacon_mask) @@ -180,7 +153,7 @@ mt76x02_update_beacon_iter(void *priv, u8 *mac, struct ieee80211_vif *vif) if (!skb) return; - mt76x02_mac_set_beacon(dev, mvif->idx, skb); + mt76x02_mac_set_beacon(dev, skb); } EXPORT_SYMBOL_GPL(mt76x02_update_beacon_iter); diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02_mac.c b/drivers/net/wireless/mediatek/mt76/mt76x02_mac.c index 4460548f346a..285ab0f491d0 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x02_mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x02_mac.c @@ -741,6 +741,8 @@ void mt76x02_mac_setaddr(struct mt76x02_dev *dev, const u8 *addr) get_unaligned_le16(dev->mt76.macaddr + 4) | FIELD_PREP(MT_MAC_BSSID_DW1_MBSS_MODE, 3) | /* 8 APs + 8 STAs */ MT_MAC_BSSID_DW1_MBSS_LOCAL_BIT); + /* enable 7 additional beacon slots and control them with bypass mask */ + mt76_rmw_field(dev, MT_MAC_BSSID_DW1, MT_MAC_BSSID_DW1_MBEACON_N, 7); for (i = 0; i < 16; i++) mt76x02_mac_set_bssid(dev, i, null_addr); diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02_mac.h b/drivers/net/wireless/mediatek/mt76/mt76x02_mac.h index 7d946aa77182..f67f66f65ee0 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x02_mac.h +++ b/drivers/net/wireless/mediatek/mt76/mt76x02_mac.h @@ -201,10 +201,11 @@ void mt76x02_mac_work(struct work_struct *work); void mt76x02_mac_cc_reset(struct mt76x02_dev *dev); void mt76x02_mac_set_bssid(struct mt76x02_dev *dev, u8 idx, const u8 *addr); -int mt76x02_mac_set_beacon(struct mt76x02_dev *dev, u8 vif_idx, - struct sk_buff *skb); +int mt76x02_mac_set_beacon(struct mt76x02_dev *dev, struct sk_buff *skb); void mt76x02_mac_set_beacon_enable(struct mt76x02_dev *dev, struct ieee80211_vif *vif, bool enable); +void mt76x02_mac_set_beacon_prepare(struct mt76x02_dev *dev); +void mt76x02_mac_set_beacon_finish(struct mt76x02_dev *dev); void mt76x02_edcca_init(struct mt76x02_dev *dev); #endif diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02_mmio.c b/drivers/net/wireless/mediatek/mt76/mt76x02_mmio.c index 4e2371c926d8..ae35780aaff1 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x02_mmio.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x02_mmio.c @@ -24,10 +24,14 @@ static void mt76x02_pre_tbtt_tasklet(unsigned long arg) mt76x02_resync_beacon_timer(dev); + mt76x02_mac_set_beacon_prepare(dev); + ieee80211_iterate_active_interfaces_atomic(mt76_hw(dev), IEEE80211_IFACE_ITER_RESUME_ALL, mt76x02_update_beacon_iter, dev); + mt76x02_mac_set_beacon_finish(dev); + mt76_csa_check(&dev->mt76); if (dev->mt76.csa_complete) diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02_usb_core.c b/drivers/net/wireless/mediatek/mt76/mt76x02_usb_core.c index d03d3c8e296c..fca861f10563 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x02_usb_core.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x02_usb_core.c @@ -208,6 +208,8 @@ static void mt76x02u_pre_tbtt_work(struct work_struct *work) mt76x02_resync_beacon_timer(dev); + mt76x02_mac_set_beacon_prepare(dev); + ieee80211_iterate_active_interfaces(mt76_hw(dev), IEEE80211_IFACE_ITER_RESUME_ALL, mt76x02_update_beacon_iter, dev); @@ -217,9 +219,11 @@ static void mt76x02u_pre_tbtt_work(struct work_struct *work) for (i = nbeacons; i < N_BCN_SLOTS; i++) { skb = __skb_dequeue(&data.q); - mt76x02_mac_set_beacon(dev, i, skb); + mt76x02_mac_set_beacon(dev, skb); } + mt76x02_mac_set_beacon_finish(dev); + mt76x02u_restart_pre_tbtt_timer(dev); } @@ -244,19 +248,15 @@ static void mt76x02u_pre_tbtt_enable(struct mt76x02_dev *dev, bool en) static void mt76x02u_beacon_enable(struct mt76x02_dev *dev, bool en) { - int i; - if (WARN_ON_ONCE(!dev->mt76.beacon_int)) return; if (en) { mt76x02u_start_pre_tbtt_timer(dev); } else { - /* Timer is already stopped, only clean up - * PS buffered frames if any. + /* Timer is already stopped, + * nothing else to do here. */ - for (i = 0; i < N_BCN_SLOTS; i++) - mt76x02_mac_set_beacon(dev, i, NULL); } } From patchwork Tue Nov 26 21:47:01 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Theil X-Patchwork-Id: 11263089 X-Patchwork-Delegate: nbd@nbd.name Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 197E313A4 for ; Tue, 26 Nov 2019 21:47:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 010922068E for ; Tue, 26 Nov 2019 21:47:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727047AbfKZVrT (ORCPT ); Tue, 26 Nov 2019 16:47:19 -0500 Received: from smail.rz.tu-ilmenau.de ([141.24.186.67]:46392 "EHLO smail.rz.tu-ilmenau.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726118AbfKZVrT (ORCPT ); Tue, 26 Nov 2019 16:47:19 -0500 Received: from localhost.localdomain (unknown [141.24.207.101]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smail.rz.tu-ilmenau.de (Postfix) with ESMTPSA id 061E458007E; Tue, 26 Nov 2019 22:47:17 +0100 (CET) From: Markus Theil To: nbd@nbd.name Cc: linux-wireless@vger.kernel.org, lorenzo.bianconi@redhat.com, Stanislaw Gruszka , Markus Theil Subject: [PATCH v9 3/6] mt76: mt76x02: add check for invalid vif idx Date: Tue, 26 Nov 2019 22:47:01 +0100 Message-Id: <20191126214704.27297-4-markus.theil@tu-ilmenau.de> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191126214704.27297-1-markus.theil@tu-ilmenau.de> References: <20191126214704.27297-1-markus.theil@tu-ilmenau.de> MIME-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org On adding vifs the idx can become 1 + (7 & 7) = 8 for APs. Check against that, as only AP vif idx 0-7 is possible. Signed-off-by: Markus Theil --- drivers/net/wireless/mediatek/mt76/mt76x02_util.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02_util.c b/drivers/net/wireless/mediatek/mt76/mt76x02_util.c index 889566b36a40..6073f8a4a8f6 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x02_util.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x02_util.c @@ -325,7 +325,9 @@ mt76x02_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) if (vif->type == NL80211_IFTYPE_STATION) idx += 8; - if (dev->vif_mask & BIT(idx)) + /* vif is already set or idx is 8 for AP/Mesh/... */ + if (dev->vif_mask & BIT(idx) || + (vif->type != NL80211_IFTYPE_STATION && idx > 7)) return -EBUSY; dev->vif_mask |= BIT(idx); From patchwork Tue Nov 26 21:47:02 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Theil X-Patchwork-Id: 11263097 X-Patchwork-Delegate: nbd@nbd.name Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 68249930 for ; Tue, 26 Nov 2019 21:47:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4636E2064B for ; Tue, 26 Nov 2019 21:47:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727071AbfKZVrU (ORCPT ); Tue, 26 Nov 2019 16:47:20 -0500 Received: from smail.rz.tu-ilmenau.de ([141.24.186.67]:46400 "EHLO smail.rz.tu-ilmenau.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727016AbfKZVrT (ORCPT ); Tue, 26 Nov 2019 16:47:19 -0500 Received: from localhost.localdomain (unknown [141.24.207.101]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smail.rz.tu-ilmenau.de (Postfix) with ESMTPSA id 0B3FA58007F; Tue, 26 Nov 2019 22:47:17 +0100 (CET) From: Markus Theil To: nbd@nbd.name Cc: linux-wireless@vger.kernel.org, lorenzo.bianconi@redhat.com, Stanislaw Gruszka , Markus Theil Subject: [PATCH v9 4/6] mt76: mt76x02: remove a copy call for usb speedup Date: Tue, 26 Nov 2019 22:47:02 +0100 Message-Id: <20191126214704.27297-5-markus.theil@tu-ilmenau.de> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191126214704.27297-1-markus.theil@tu-ilmenau.de> References: <20191126214704.27297-1-markus.theil@tu-ilmenau.de> MIME-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org This patch removes a mt76_wr_copy call from the beacon path to hw. The skb which is used in this place gets therefore build with txwi inside its data. For mt76 usb drivers, this saves one synchronuous copy call over usb, which lets the beacon work complete faster. In mmio case, there is not enough headroom to put the txwi into the skb, it is therefore using an additional mt76_wr_copy, which is fast over mmio. Thanks Stanislaw for pointing this out. Signed-off-by: Markus Theil --- .../wireless/mediatek/mt76/mt76x02_beacon.c | 20 +++++++++++++++---- 1 file changed, 16 insertions(+), 4 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02_beacon.c b/drivers/net/wireless/mediatek/mt76/mt76x02_beacon.c index 1c4bdf88f712..68a4f512319e 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x02_beacon.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x02_beacon.c @@ -26,15 +26,27 @@ static int mt76x02_write_beacon(struct mt76x02_dev *dev, int offset, struct sk_buff *skb) { int beacon_len = dev->beacon_ops->slot_size; - struct mt76x02_txwi txwi; if (WARN_ON_ONCE(beacon_len < skb->len + sizeof(struct mt76x02_txwi))) return -ENOSPC; - mt76x02_mac_write_txwi(dev, &txwi, skb, NULL, NULL, skb->len); + /* USB devices already reserve enough skb headroom for txwi's. This + * helps to save slow copies over USB. + */ + if (mt76_is_usb(&dev->mt76)) { + struct mt76x02_txwi *txwi; + + mt76_insert_hdr_pad(skb); + txwi = (struct mt76x02_txwi *)(skb->data - sizeof(*txwi)); + mt76x02_mac_write_txwi(dev, txwi, skb, NULL, NULL, skb->len); + skb_push(skb, sizeof(*txwi)); + } else { + struct mt76x02_txwi txwi; - mt76_wr_copy(dev, offset, &txwi, sizeof(txwi)); - offset += sizeof(txwi); + mt76x02_mac_write_txwi(dev, &txwi, skb, NULL, NULL, skb->len); + mt76_wr_copy(dev, offset, &txwi, sizeof(txwi)); + offset += sizeof(txwi); + } mt76_wr_copy(dev, offset, skb->data, skb->len); return 0; From patchwork Tue Nov 26 21:47:03 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Theil X-Patchwork-Id: 11263095 X-Patchwork-Delegate: nbd@nbd.name Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 0CFFF17F0 for ; Tue, 26 Nov 2019 21:47:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E959520678 for ; Tue, 26 Nov 2019 21:47:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727090AbfKZVrX (ORCPT ); Tue, 26 Nov 2019 16:47:23 -0500 Received: from smail.rz.tu-ilmenau.de ([141.24.186.67]:46405 "EHLO smail.rz.tu-ilmenau.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727050AbfKZVrV (ORCPT ); Tue, 26 Nov 2019 16:47:21 -0500 Received: from localhost.localdomain (unknown [141.24.207.101]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smail.rz.tu-ilmenau.de (Postfix) with ESMTPSA id 1AAEC580080; Tue, 26 Nov 2019 22:47:17 +0100 (CET) From: Markus Theil To: nbd@nbd.name Cc: linux-wireless@vger.kernel.org, lorenzo.bianconi@redhat.com, Stanislaw Gruszka , Markus Theil Subject: [PATCH v9 5/6] mt76: speed up usb bulk copy Date: Tue, 26 Nov 2019 22:47:03 +0100 Message-Id: <20191126214704.27297-6-markus.theil@tu-ilmenau.de> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191126214704.27297-1-markus.theil@tu-ilmenau.de> References: <20191126214704.27297-1-markus.theil@tu-ilmenau.de> MIME-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Use larger batches for usb copy to speed this operation up. Otherwise it would be too slow for copying new beacons or broadcast frames over usb. Assure, that always a multiple of 4 Bytes is copied, as outlined in 850e8f6fbd "mt76: round up length on mt76_wr_copy" from Felix Fietkau. Signed-off-by: Markus Theil --- drivers/net/wireless/mediatek/mt76/mt76.h | 2 +- drivers/net/wireless/mediatek/mt76/usb.c | 24 +++++++++++++++++------ 2 files changed, 19 insertions(+), 7 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h index fb077760347a..1981912de1f9 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76.h +++ b/drivers/net/wireless/mediatek/mt76/mt76.h @@ -382,7 +382,7 @@ enum mt76u_out_ep { struct mt76_usb { struct mutex usb_ctrl_mtx; union { - u8 data[32]; + u8 data[128]; __le32 reg_val; }; diff --git a/drivers/net/wireless/mediatek/mt76/usb.c b/drivers/net/wireless/mediatek/mt76/usb.c index d6d47081e281..97b263ce3872 100644 --- a/drivers/net/wireless/mediatek/mt76/usb.c +++ b/drivers/net/wireless/mediatek/mt76/usb.c @@ -149,18 +149,30 @@ static void mt76u_copy(struct mt76_dev *dev, u32 offset, const void *data, int len) { struct mt76_usb *usb = &dev->usb; - const u32 *val = data; - int i, ret; + const u8 *val = data; + int ret; + int current_batch_size; + int i = 0; + + /* Assure that always a multiple of 4 bytes are copied, + * otherwise beacons can be corrupted. + * See: "mt76: round up length on mt76_wr_copy" + * Commit 850e8f6fbd5d0003b0 + */ + len = round_up(len, 4); mutex_lock(&usb->usb_ctrl_mtx); - for (i = 0; i < DIV_ROUND_UP(len, 4); i++) { - put_unaligned(val[i], (u32 *)usb->data); + while (i < len) { + current_batch_size = min_t(int, sizeof(usb->data), len - i); + memcpy(usb->data, val + i, current_batch_size); ret = __mt76u_vendor_request(dev, MT_VEND_MULTI_WRITE, USB_DIR_OUT | USB_TYPE_VENDOR, - 0, offset + i * 4, usb->data, - sizeof(u32)); + 0, offset + i, usb->data, + current_batch_size); if (ret < 0) break; + + i += current_batch_size; } mutex_unlock(&usb->usb_ctrl_mtx); } From patchwork Tue Nov 26 21:47:04 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Theil X-Patchwork-Id: 11263093 X-Patchwork-Delegate: nbd@nbd.name Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 767CF930 for ; Tue, 26 Nov 2019 21:47:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5E80A2064B for ; Tue, 26 Nov 2019 21:47:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727085AbfKZVrW (ORCPT ); Tue, 26 Nov 2019 16:47:22 -0500 Received: from smail.rz.tu-ilmenau.de ([141.24.186.67]:46406 "EHLO smail.rz.tu-ilmenau.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727051AbfKZVrV (ORCPT ); Tue, 26 Nov 2019 16:47:21 -0500 Received: from localhost.localdomain (unknown [141.24.207.101]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smail.rz.tu-ilmenau.de (Postfix) with ESMTPSA id 2AE78580081; Tue, 26 Nov 2019 22:47:17 +0100 (CET) From: Markus Theil To: nbd@nbd.name Cc: linux-wireless@vger.kernel.org, lorenzo.bianconi@redhat.com, Stanislaw Gruszka , Markus Theil Subject: [PATCH v9 6/6] mt76: mt76x02: add channel switch support for usb interfaces Date: Tue, 26 Nov 2019 22:47:04 +0100 Message-Id: <20191126214704.27297-7-markus.theil@tu-ilmenau.de> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191126214704.27297-1-markus.theil@tu-ilmenau.de> References: <20191126214704.27297-1-markus.theil@tu-ilmenau.de> MIME-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org This patch enables channel switch support on mt76 usb interfaces. Signed-off-by: Markus Theil --- drivers/net/wireless/mediatek/mt76/mt76x02_usb_core.c | 8 ++++++++ drivers/net/wireless/mediatek/mt76/mt76x02_util.c | 2 +- 2 files changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02_usb_core.c b/drivers/net/wireless/mediatek/mt76/mt76x02_usb_core.c index fca861f10563..3dc3682d585a 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x02_usb_core.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x02_usb_core.c @@ -214,6 +214,13 @@ static void mt76x02u_pre_tbtt_work(struct work_struct *work) IEEE80211_IFACE_ITER_RESUME_ALL, mt76x02_update_beacon_iter, dev); + mt76_csa_check(&dev->mt76); + + if (dev->mt76.csa_complete) { + mt76_csa_finish(&dev->mt76); + goto out; + } + nbeacons = hweight8(dev->mt76.beacon_mask); mt76x02_enqueue_buffered_bc(dev, &data, N_BCN_SLOTS - nbeacons); @@ -222,6 +229,7 @@ static void mt76x02u_pre_tbtt_work(struct work_struct *work) mt76x02_mac_set_beacon(dev, skb); } +out: mt76x02_mac_set_beacon_finish(dev); mt76x02u_restart_pre_tbtt_timer(dev); diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02_util.c b/drivers/net/wireless/mediatek/mt76/mt76x02_util.c index 6073f8a4a8f6..dbda7fb6dab7 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x02_util.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x02_util.c @@ -166,7 +166,6 @@ void mt76x02_init_device(struct mt76x02_dev *dev) wiphy->reg_notifier = mt76x02_regd_notifier; wiphy->iface_combinations = mt76x02_if_comb; wiphy->n_iface_combinations = ARRAY_SIZE(mt76x02_if_comb); - wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH; /* init led callbacks */ if (IS_ENABLED(CONFIG_MT76_LEDS)) { @@ -176,6 +175,7 @@ void mt76x02_init_device(struct mt76x02_dev *dev) } } + wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH; wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_VHT_IBSS); hw->sta_data_size = sizeof(struct mt76x02_sta);