From patchwork Thu May 30 08:44:55 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mingyen Hsieh X-Patchwork-Id: 800894 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) (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 5569955887 for ; Thu, 30 May 2024 08:45:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=210.61.82.184 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717058715; cv=none; b=Gqpi1JwaDEuCoDjDfgOwcqhY8UW36IsOPnxvlfkgU47lyck7NEzU00D8d9bYyggus0wNqx4Vo/aacpGFyPw+ZE3Kpzcpk7Y+O1sxw6ngYvH8Y20SL4B9lq76YYckX5uOu87RkIqKrkSZ0Uy7b8QdjBfDzxeLx/ZhilaQWVT9YTM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717058715; c=relaxed/simple; bh=eSIoBfN9KD/raGDx3nQaqs5eTQFWX8c5cGTJt5/lT58=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=OwEEluUacEe2b9nYxK+Bi0ARk2w0C0au3GGxJyu9J0ubuCQHwJDPrYpJwTWRg1PBi0whWV22mYh2Idpo0klaCXGTdsSsYAqNB7SK8fSL6ly+pELPUAuCSm6NjyXRG1DEmQNs26wOr71q3af5mbtpe9maN1z46rtPpNgT3E0fj6Q= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=mediatek.com; spf=pass smtp.mailfrom=mediatek.com; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b=YYiCj0Lt; arc=none smtp.client-ip=210.61.82.184 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=mediatek.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=mediatek.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="YYiCj0Lt" X-UUID: e66398e41e6011efbfff99f2466cf0b4-20240530 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:Message-ID:Date:Subject:CC:To:From; bh=oQcOVF+O655yruhPTVMERnaIwgJZSDJ5JXbzSnvNbU8=; b=YYiCj0LtprZ8ilhR6TXtCbLFhEx8BBpG/FBOpyt9fwxAeB9MaKTddKCGIA2XBTiQQPiaT0wyXrkHiV3a5hEEXXwGQWN4M4N6xdcCFVtkySGz2PDQonSwSNFDP/EDS6IayhCrE+UtLMgPJpQJoePLq7neRvlIoIovyjTFz68tzDo=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.39, REQID:efdd89df-1b4e-4b12-997f-fb134025598c, IP:0, U RL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION: release,TS:0 X-CID-META: VersionHash:393d96e, CLOUDID:341a0188-8d4f-477b-89d2-1e3bdbef96d1, B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,RT:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES:1, SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0,ARC:0 X-CID-BVR: 0 X-CID-BAS: 0,_,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR X-UUID: e66398e41e6011efbfff99f2466cf0b4-20240530 Received: from mtkmbs13n1.mediatek.inc [(172.21.101.193)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 47687398; Thu, 30 May 2024 16:45:00 +0800 Received: from mtkmbs13n1.mediatek.inc (172.21.101.193) by MTKMBS09N2.mediatek.inc (172.21.101.94) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Thu, 30 May 2024 01:44:59 -0700 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs13n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Thu, 30 May 2024 16:44:58 +0800 From: Mingyen Hsieh To: , CC: , , , , , , , , , , , , , , Leon Yen , Ming Yen Hsieh Subject: [PATCH v2] wifi: mt76: mt7921: introduce CSA support Date: Thu, 30 May 2024 16:44:55 +0800 Message-ID: <20240530084455.4290-1-mingyen.hsieh@mediatek.com> X-Mailer: git-send-email 2.18.0 Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Leon Yen Add CSA (Channel Switch Announcement) related implementation in collaboration with mac80211 to deal with dynamic channel switching. Signed-off-by: Leon Yen Signed-off-by: Ming Yen Hsieh Tested-by: Arowa Suliman --- v2: update subject format --- .../net/wireless/mediatek/mt76/mt7921/main.c | 98 +++++++++++++++++++ .../wireless/mediatek/mt76/mt7921/mt7921.h | 1 + drivers/net/wireless/mediatek/mt76/mt792x.h | 6 ++ .../net/wireless/mediatek/mt76/mt792x_core.c | 14 +++ 4 files changed, 119 insertions(+) diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/main.c b/drivers/net/wireless/mediatek/mt76/mt7921/main.c index 3e3ad3518d85..22689bae9a3c 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7921/main.c +++ b/drivers/net/wireless/mediatek/mt76/mt7921/main.c @@ -337,6 +337,9 @@ mt7921_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER; if (phy->chip_cap & MT792x_CHIP_CAP_RSSI_NOTIFY_EVT_EN) vif->driver_flags |= IEEE80211_VIF_SUPPORTS_CQM_RSSI; + + INIT_WORK(&mvif->csa_work, mt7921_csa_work); + timer_setup(&mvif->csa_timer, mt792x_csa_timer, 0); out: mt792x_mutex_release(dev); @@ -1337,6 +1340,9 @@ static int mt7921_add_chanctx(struct ieee80211_hw *hw, struct ieee80211_chanctx_conf *ctx) { + struct mt792x_dev *dev = mt792x_hw_dev(hw); + + dev->new_ctx = ctx; return 0; } @@ -1344,6 +1350,10 @@ static void mt7921_remove_chanctx(struct ieee80211_hw *hw, struct ieee80211_chanctx_conf *ctx) { + struct mt792x_dev *dev = mt792x_hw_dev(hw); + + if (dev->new_ctx == ctx) + dev->new_ctx = NULL; } static void mt7921_ctx_iter(void *priv, u8 *mac, @@ -1399,6 +1409,89 @@ static void mt7921_mgd_complete_tx(struct ieee80211_hw *hw, mt7921_abort_roc(mvif->phy, mvif); } +static int mt7921_switch_vif_chanctx(struct ieee80211_hw *hw, + struct ieee80211_vif_chanctx_switch *vifs, + int n_vifs, + enum ieee80211_chanctx_switch_mode mode) +{ + return mt792x_assign_vif_chanctx(hw, vifs->vif, vifs->link_conf, + vifs->new_ctx); +} + +void mt7921_csa_work(struct work_struct *work) +{ + struct mt792x_vif *mvif; + struct mt792x_dev *dev; + struct ieee80211_vif *vif; + int ret; + + mvif = (struct mt792x_vif *)container_of(work, struct mt792x_vif, + csa_work); + dev = mvif->phy->dev; + vif = container_of((void *)mvif, struct ieee80211_vif, drv_priv); + + mt792x_mutex_acquire(dev); + ret = mt76_connac_mcu_uni_set_chctx(mvif->phy->mt76, &mvif->mt76, + dev->new_ctx); + mt792x_mutex_release(dev); + + ieee80211_chswitch_done(vif, !ret, 0); +} + +static int mt7921_pre_channel_switch(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_channel_switch *chsw) +{ + if (vif->type != NL80211_IFTYPE_STATION || !vif->cfg.assoc) + return -EOPNOTSUPP; + + /* Avoid beacon loss due to the CAC(Channel Availability Check) time + * of the AP. + */ + if (!cfg80211_chandef_usable(hw->wiphy, &chsw->chandef, + IEEE80211_CHAN_RADAR)) + return -EOPNOTSUPP; + + return 0; +} + +static void mt7921_channel_switch(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_channel_switch *chsw) +{ + struct mt792x_vif *mvif = (struct mt792x_vif *)vif->drv_priv; + u16 beacon_interval = vif->bss_conf.beacon_int; + + mvif->csa_timer.expires = TU_TO_EXP_TIME(beacon_interval * chsw->count); + add_timer(&mvif->csa_timer); +} + +static void mt7921_abort_channel_switch(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_bss_conf *link_conf) +{ + struct mt792x_vif *mvif = (struct mt792x_vif *)vif->drv_priv; + + del_timer_sync(&mvif->csa_timer); + cancel_work_sync(&mvif->csa_work); +} + +static void mt7921_channel_switch_rx_beacon(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_channel_switch *chsw) +{ + struct mt792x_dev *dev = mt792x_hw_dev(hw); + struct mt792x_vif *mvif = (struct mt792x_vif *)vif->drv_priv; + u16 beacon_interval = vif->bss_conf.beacon_int; + + if (cfg80211_chandef_identical(&chsw->chandef, + &dev->new_ctx->def) && + chsw->count) { + mod_timer(&mvif->csa_timer, + TU_TO_EXP_TIME(beacon_interval * chsw->count)); + } +} + const struct ieee80211_ops mt7921_ops = { .tx = mt792x_tx, .start = mt7921_start, @@ -1458,6 +1551,11 @@ const struct ieee80211_ops mt7921_ops = { .unassign_vif_chanctx = mt792x_unassign_vif_chanctx, .mgd_prepare_tx = mt7921_mgd_prepare_tx, .mgd_complete_tx = mt7921_mgd_complete_tx, + .switch_vif_chanctx = mt7921_switch_vif_chanctx, + .pre_channel_switch = mt7921_pre_channel_switch, + .channel_switch = mt7921_channel_switch, + .abort_channel_switch = mt7921_abort_channel_switch, + .channel_switch_rx_beacon = mt7921_channel_switch_rx_beacon, }; EXPORT_SYMBOL_GPL(mt7921_ops); diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h b/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h index 6c5392c5d207..b85e76e50657 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h +++ b/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h @@ -272,6 +272,7 @@ int mt7921_mcu_uni_rx_ba(struct mt792x_dev *dev, bool enable); void mt7921_scan_work(struct work_struct *work); void mt7921_roc_work(struct work_struct *work); +void mt7921_csa_work(struct work_struct *work); int mt7921_mcu_uni_bss_ps(struct mt792x_dev *dev, struct ieee80211_vif *vif); void mt7921_coredump_work(struct work_struct *work); int mt7921_get_txpwr_info(struct mt792x_dev *dev, struct mt7921_txpwr *txpwr); diff --git a/drivers/net/wireless/mediatek/mt76/mt792x.h b/drivers/net/wireless/mediatek/mt76/mt792x.h index 20578497a405..d4b84c7eca59 100644 --- a/drivers/net/wireless/mediatek/mt76/mt792x.h +++ b/drivers/net/wireless/mediatek/mt76/mt792x.h @@ -109,6 +109,9 @@ struct mt792x_vif { struct ewma_rssi rssi; struct ieee80211_tx_queue_params queue_params[IEEE80211_NUM_ACS]; + + struct work_struct csa_work; + struct timer_list csa_timer; }; struct mt792x_phy { @@ -209,6 +212,8 @@ struct mt792x_dev { enum environment_cap country_ie_env; u32 backup_l1; u32 backup_l2; + + struct ieee80211_chanctx_conf *new_ctx; }; static inline struct mt792x_dev * @@ -278,6 +283,7 @@ void mt792x_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u64 timestamp); void mt792x_tx_worker(struct mt76_worker *w); void mt792x_roc_timer(struct timer_list *timer); +void mt792x_csa_timer(struct timer_list *timer); void mt792x_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u32 queues, bool drop); int mt792x_assign_vif_chanctx(struct ieee80211_hw *hw, diff --git a/drivers/net/wireless/mediatek/mt76/mt792x_core.c b/drivers/net/wireless/mediatek/mt76/mt792x_core.c index a405af8d9052..2c95bc2aac0a 100644 --- a/drivers/net/wireless/mediatek/mt76/mt792x_core.c +++ b/drivers/net/wireless/mediatek/mt76/mt792x_core.c @@ -246,6 +246,14 @@ void mt792x_roc_timer(struct timer_list *timer) } EXPORT_SYMBOL_GPL(mt792x_roc_timer); +void mt792x_csa_timer(struct timer_list *timer) +{ + struct mt792x_vif *mvif = from_timer(mvif, timer, csa_timer); + + ieee80211_queue_work(mvif->phy->mt76->hw, &mvif->csa_work); +} +EXPORT_SYMBOL_GPL(mt792x_csa_timer); + void mt792x_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u32 queues, bool drop) { @@ -283,6 +291,11 @@ void mt792x_unassign_vif_chanctx(struct ieee80211_hw *hw, mutex_lock(&dev->mt76.mutex); mvif->mt76.ctx = NULL; mutex_unlock(&dev->mt76.mutex); + + if (vif->bss_conf.csa_active) { + del_timer_sync(&mvif->csa_timer); + cancel_work_sync(&mvif->csa_work); + } } EXPORT_SYMBOL_GPL(mt792x_unassign_vif_chanctx); @@ -603,6 +616,7 @@ int mt792x_init_wiphy(struct ieee80211_hw *hw) ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS); ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW); ieee80211_hw_set(hw, CONNECTION_MONITOR); + ieee80211_hw_set(hw, CHANCTX_STA_CSA); if (dev->pm.enable) ieee80211_hw_set(hw, CONNECTION_MONITOR);