[v2,7/7] mt76: replace sta_add/remove ops with common sta_state function

Message ID	20181116111235.86347-7-nbd@nbd.name (mailing list archive)
State	Accepted
Delegated to:	Kalle Valo
Headers	show Return-Path: <linux-wireless-owner@kernel.org> From: Felix Fietkau <nbd@nbd.name> To: linux-wireless@vger.kernel.org Subject: [PATCH v2 7/7] mt76: replace sta_add/remove ops with common sta_state function Date: Fri, 16 Nov 2018 12:12:35 +0100 Message-Id: <20181116111235.86347-7-nbd@nbd.name> In-Reply-To: <20181116111235.86347-1-nbd@nbd.name> References: <20181116111235.86347-1-nbd@nbd.name> Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk
Series	[v2,1/7] mt76: avoid queue/status spinlocks while passing tx status to mac80211 \| expand [v2,1/7] mt76: avoid queue/status spinlocks while passing tx status to mac80211 [v2,2/7] mt76: do not wake tx queues during flush [v2,3/7] mt76: fix race condition in station removal [v2,4/7] mt76: add mt76_sta_remove helper [v2,5/7] mt76: mt76x02: make group_wcid the first member in struct mt76x02_vif [v2,6/7] mt76: mt76x02: remove mt76x02_txq_init [v2,7/7] mt76: replace sta_add/remove ops with common sta_state function

diff --git a/drivers/net/wireless/mediatek/mt76/mac80211.c b/drivers/net/wireless/mediatek/mt76/mac80211.c index 1098919f5498..d3f94163ef8e 100644 --- a/drivers/net/wireless/mediatek/mt76/mac80211.c +++ b/drivers/net/wireless/mediatek/mt76/mac80211.c @@ -631,8 +631,40 @@ void mt76_rx_poll_complete(struct mt76_dev *dev, enum mt76_rxq_id q, } EXPORT_SYMBOL_GPL(mt76_rx_poll_complete); -void mt76_sta_remove(struct mt76_dev *dev, struct ieee80211_vif *vif, - struct ieee80211_sta *sta) +static int +mt76_sta_add(struct mt76_dev *dev, struct ieee80211_vif *vif, + struct ieee80211_sta *sta) +{ + struct mt76_wcid *wcid = (struct mt76_wcid *)sta->drv_priv; + int ret; + int i; + + mutex_lock(&dev->mutex); + + ret = dev->drv->sta_add(dev, vif, sta); + if (ret) + goto out; + + for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { + struct mt76_txq *mtxq; + + mtxq = (struct mt76_txq *)sta->txq[i]->drv_priv; + mtxq->wcid = wcid; + + mt76_txq_init(dev, sta->txq[i]); + } + + rcu_assign_pointer(dev->wcid[wcid->idx], wcid); + +out: + mutex_unlock(&dev->mutex); + + return ret; +} + +static void +mt76_sta_remove(struct mt76_dev *dev, struct ieee80211_vif *vif, + struct ieee80211_sta *sta) { struct mt76_wcid *wcid = (struct mt76_wcid *)sta->drv_priv; int idx = wcid->idx; @@ -642,10 +674,33 @@ void mt76_sta_remove(struct mt76_dev *dev, struct ieee80211_vif *vif, synchronize_rcu(); mutex_lock(&dev->mutex); + + if (dev->drv->sta_remove) + dev->drv->sta_remove(dev, vif, sta); + mt76_tx_status_check(dev, wcid, true); for (i = 0; i < ARRAY_SIZE(sta->txq); i++) mt76_txq_remove(dev, sta->txq[i]); mt76_wcid_free(dev->wcid_mask, idx); + mutex_unlock(&dev->mutex); } -EXPORT_SYMBOL_GPL(mt76_sta_remove); + +int mt76_sta_state(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + struct ieee80211_sta *sta, + enum ieee80211_sta_state old_state, + enum ieee80211_sta_state new_state) +{ + struct mt76_dev *dev = hw->priv; + + if (old_state == IEEE80211_STA_NOTEXIST && + new_state == IEEE80211_STA_NONE) + return mt76_sta_add(dev, vif, sta); + + if (old_state == IEEE80211_STA_NONE && + new_state == IEEE80211_STA_NOTEXIST) + mt76_sta_remove(dev, vif, sta); + + return 0; +} +EXPORT_SYMBOL_GPL(mt76_sta_state); diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h index 878836fe80d3..5cd508a68609 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76.h +++ b/drivers/net/wireless/mediatek/mt76/mt76.h @@ -288,6 +288,12 @@ struct mt76_driver_ops { void (*sta_ps)(struct mt76_dev *dev, struct ieee80211_sta *sta, bool ps); + + int (*sta_add)(struct mt76_dev *dev, struct ieee80211_vif *vif, + struct ieee80211_sta *sta); + + void (*sta_remove)(struct mt76_dev *dev, struct ieee80211_vif *vif, + struct ieee80211_sta *sta); }; struct mt76_channel_state { @@ -664,8 +670,10 @@ void mt76_tx_status_skb_done(struct mt76_dev *dev, struct sk_buff *skb, void mt76_tx_complete_skb(struct mt76_dev *dev, struct sk_buff *skb); void mt76_tx_status_check(struct mt76_dev *dev, struct mt76_wcid *wcid, bool flush); -void mt76_sta_remove(struct mt76_dev *dev, struct ieee80211_vif *vif, - struct ieee80211_sta *sta); +int mt76_sta_state(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + struct ieee80211_sta *sta, + enum ieee80211_sta_state old_state, + enum ieee80211_sta_state new_state); struct ieee80211_sta *mt76_rx_convert(struct sk_buff *skb); diff --git a/drivers/net/wireless/mediatek/mt76/mt76x0/pci.c b/drivers/net/wireless/mediatek/mt76/mt76x0/pci.c index 757816d2b1ab..d895b6f3dc44 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x0/pci.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x0/pci.c @@ -90,8 +90,7 @@ static const struct ieee80211_ops mt76x0e_ops = { .config = mt76x0_config, .configure_filter = mt76x02_configure_filter, .bss_info_changed = mt76x02_bss_info_changed, - .sta_add = mt76x02_sta_add, - .sta_remove = mt76x02_sta_remove, + .sta_state = mt76_sta_state, .set_key = mt76x02_set_key, .conf_tx = mt76x02_conf_tx, .sw_scan_start = mt76x02_sw_scan, @@ -162,6 +161,8 @@ mt76x0e_probe(struct pci_dev *pdev, const struct pci_device_id *id) .rx_skb = mt76x02_queue_rx_skb, .rx_poll_complete = mt76x02_rx_poll_complete, .sta_ps = mt76x02_sta_ps, + .sta_add = mt76x02_sta_add, + .sta_remove = mt76x02_sta_remove, }; struct mt76x02_dev *dev; int ret; diff --git a/drivers/net/wireless/mediatek/mt76/mt76x0/usb.c b/drivers/net/wireless/mediatek/mt76/mt76x0/usb.c index 35b98661632a..0e6b43bb4678 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x0/usb.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x0/usb.c @@ -146,8 +146,7 @@ static const struct ieee80211_ops mt76x0u_ops = { .config = mt76x0_config, .configure_filter = mt76x02_configure_filter, .bss_info_changed = mt76x02_bss_info_changed, - .sta_add = mt76x02_sta_add, - .sta_remove = mt76x02_sta_remove, + .sta_state = mt76_sta_state, .set_key = mt76x02_set_key, .conf_tx = mt76x02_conf_tx, .sw_scan_start = mt76x02_sw_scan, @@ -219,6 +218,8 @@ static int mt76x0u_probe(struct usb_interface *usb_intf, .tx_complete_skb = mt76x02u_tx_complete_skb, .tx_status_data = mt76x02_tx_status_data, .rx_skb = mt76x02_queue_rx_skb, + .sta_add = mt76x02_sta_add, + .sta_remove = mt76x02_sta_remove, }; struct usb_device *usb_dev = interface_to_usbdev(usb_intf); struct mt76x02_dev *dev; diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02.h b/drivers/net/wireless/mediatek/mt76/mt76x02.h index 65daa3d3c289..b1d83dd34204 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x02.h +++ b/drivers/net/wireless/mediatek/mt76/mt76x02.h @@ -110,10 +110,10 @@ void mt76x02_init_device(struct mt76x02_dev *dev); void mt76x02_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags, unsigned int *total_flags, u64 multicast); -int mt76x02_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - struct ieee80211_sta *sta); -int mt76x02_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - struct ieee80211_sta *sta); +int mt76x02_sta_add(struct mt76_dev *mdev, struct ieee80211_vif *vif, + struct ieee80211_sta *sta); +void mt76x02_sta_remove(struct mt76_dev *mdev, struct ieee80211_vif *vif, + struct ieee80211_sta *sta); void mt76x02_config_mac_addr_list(struct mt76x02_dev *dev); void mt76x02_vif_init(struct mt76x02_dev *dev, struct ieee80211_vif *vif, diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02_util.c b/drivers/net/wireless/mediatek/mt76/mt76x02_util.c index f5ebed75b939..3a70e5bf7d42 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x02_util.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x02_util.c @@ -167,23 +167,17 @@ void mt76x02_configure_filter(struct ieee80211_hw *hw, } EXPORT_SYMBOL_GPL(mt76x02_configure_filter); -int mt76x02_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, +int mt76x02_sta_add(struct mt76_dev *mdev, struct ieee80211_vif *vif, struct ieee80211_sta *sta) { - struct mt76x02_dev *dev = hw->priv; + struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76); struct mt76x02_sta *msta = (struct mt76x02_sta *)sta->drv_priv; struct mt76x02_vif *mvif = (struct mt76x02_vif *)vif->drv_priv; - int ret = 0; int idx = 0; - int i; - - mutex_lock(&dev->mt76.mutex); idx = mt76_wcid_alloc(dev->mt76.wcid_mask, ARRAY_SIZE(dev->mt76.wcid)); - if (idx < 0) { - ret = -ENOSPC; - goto out; - } + if (idx < 0) + return -ENOSPC; msta->vif = mvif; msta->wcid.sta = 1; @@ -191,43 +185,25 @@ int mt76x02_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, msta->wcid.hw_key_idx = -1; mt76x02_mac_wcid_setup(dev, idx, mvif->idx, sta->addr); mt76x02_mac_wcid_set_drop(dev, idx, false); - for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { - struct mt76_txq *mtxq; - - mtxq = (struct mt76_txq *) sta->txq[i]->drv_priv; - mtxq->wcid = &msta->wcid; - mt76_txq_init(&dev->mt76, sta->txq[i]); - } if (vif->type == NL80211_IFTYPE_AP) set_bit(MT_WCID_FLAG_CHECK_PS, &msta->wcid.flags); ewma_signal_init(&msta->rssi); - rcu_assign_pointer(dev->mt76.wcid[idx], &msta->wcid); - -out: - mutex_unlock(&dev->mt76.mutex); - - return ret; + return 0; } EXPORT_SYMBOL_GPL(mt76x02_sta_add); -int mt76x02_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - struct ieee80211_sta *sta) +void mt76x02_sta_remove(struct mt76_dev *mdev, struct ieee80211_vif *vif, + struct ieee80211_sta *sta) { - struct mt76x02_dev *dev = hw->priv; + struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76); struct mt76_wcid *wcid = (struct mt76_wcid *)sta->drv_priv; int idx = wcid->idx; - mt76_sta_remove(&dev->mt76, vif, sta); - - mutex_lock(&dev->mt76.mutex); mt76x02_mac_wcid_set_drop(dev, idx, true); mt76x02_mac_wcid_setup(dev, idx, 0, NULL); - mutex_unlock(&dev->mt76.mutex); - - return 0; } EXPORT_SYMBOL_GPL(mt76x02_sta_remove); diff --git a/drivers/net/wireless/mediatek/mt76/mt76x2/pci_init.c b/drivers/net/wireless/mediatek/mt76/mt76x2/pci_init.c index 843dda261cf8..6eaab156387a 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x2/pci_init.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x2/pci_init.c @@ -323,6 +323,8 @@ struct mt76x02_dev *mt76x2_alloc_device(struct device *pdev) .rx_skb = mt76x02_queue_rx_skb, .rx_poll_complete = mt76x02_rx_poll_complete, .sta_ps = mt76x02_sta_ps, + .sta_add = mt76x02_sta_add, + .sta_remove = mt76x02_sta_remove, }; struct mt76x02_dev *dev; struct mt76_dev *mdev; diff --git a/drivers/net/wireless/mediatek/mt76/mt76x2/pci_main.c b/drivers/net/wireless/mediatek/mt76/mt76x2/pci_main.c index 3d73926837bf..b54a32397486 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x2/pci_main.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x2/pci_main.c @@ -182,8 +182,7 @@ const struct ieee80211_ops mt76x2_ops = { .config = mt76x2_config, .configure_filter = mt76x02_configure_filter, .bss_info_changed = mt76x02_bss_info_changed, - .sta_add = mt76x02_sta_add, - .sta_remove = mt76x02_sta_remove, + .sta_state = mt76_sta_state, .set_key = mt76x02_set_key, .conf_tx = mt76x02_conf_tx, .sw_scan_start = mt76x02_sw_scan, diff --git a/drivers/net/wireless/mediatek/mt76/mt76x2/usb_init.c b/drivers/net/wireless/mediatek/mt76/mt76x2/usb_init.c index de0fbdb02c4d..0be3784f44fb 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x2/usb_init.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x2/usb_init.c @@ -141,6 +141,8 @@ struct mt76x02_dev *mt76x2u_alloc_device(struct device *pdev) .tx_complete_skb = mt76x02u_tx_complete_skb, .tx_status_data = mt76x02_tx_status_data, .rx_skb = mt76x02_queue_rx_skb, + .sta_add = mt76x02_sta_add, + .sta_remove = mt76x02_sta_remove, }; struct mt76x02_dev *dev; struct mt76_dev *mdev; diff --git a/drivers/net/wireless/mediatek/mt76/mt76x2/usb_main.c b/drivers/net/wireless/mediatek/mt76/mt76x2/usb_main.c index a9ecc92875ae..0f2438fd6fd3 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x2/usb_main.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x2/usb_main.c @@ -127,8 +127,7 @@ const struct ieee80211_ops mt76x2u_ops = { .stop = mt76x2u_stop, .add_interface = mt76x2u_add_interface, .remove_interface = mt76x02_remove_interface, - .sta_add = mt76x02_sta_add, - .sta_remove = mt76x02_sta_remove, + .sta_state = mt76x02_sta_state, .set_key = mt76x02_set_key, .ampdu_action = mt76x02_ampdu_action, .config = mt76x2u_config,

[v2,7/7] mt76: replace sta_add/remove ops with common sta_state function

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