1 // SPDX-License-Identifier: GPL-2.0-only
11 #include "driver-ops.h"
17  * ieee802154_wake_queue - wake ieee802154 queue
22  * one frame at a time for each phy, which means we had to stop the queue to
28 	struct ieee802154_local *local = hw_to_local(hw);  in ieee802154_wake_queue()  local
32 	clear_bit(WPAN_PHY_FLAG_STATE_QUEUE_STOPPED, &local->phy->flags);  in ieee802154_wake_queue()
33 	list_for_each_entry_rcu(sdata, &local->interfaces, list) {  in ieee802154_wake_queue()
34 		if (!sdata->dev)  in ieee802154_wake_queue()
37 		netif_wake_queue(sdata->dev);  in ieee802154_wake_queue()
43  * ieee802154_stop_queue - stop ieee802154 queue
49  * stop giving us new skbs while we are busy with the transmitted one. The queue
54 	struct ieee802154_local *local = hw_to_local(hw);  in ieee802154_stop_queue()  local
58 	list_for_each_entry_rcu(sdata, &local->interfaces, list) {  in ieee802154_stop_queue()
59 		if (!sdata->dev)  in ieee802154_stop_queue()
62 		netif_stop_queue(sdata->dev);  in ieee802154_stop_queue()
67 void ieee802154_hold_queue(struct ieee802154_local *local)  in ieee802154_hold_queue()  argument
71 	spin_lock_irqsave(&local->phy->queue_lock, flags);  in ieee802154_hold_queue()
72 	if (!atomic_fetch_inc(&local->phy->hold_txs))  in ieee802154_hold_queue()
73 		ieee802154_stop_queue(&local->hw);  in ieee802154_hold_queue()
74 	spin_unlock_irqrestore(&local->phy->queue_lock, flags);  in ieee802154_hold_queue()
77 void ieee802154_release_queue(struct ieee802154_local *local)  in ieee802154_release_queue()  argument
81 	spin_lock_irqsave(&local->phy->queue_lock, flags);  in ieee802154_release_queue()
82 	if (atomic_dec_and_test(&local->phy->hold_txs))  in ieee802154_release_queue()
83 		ieee802154_wake_queue(&local->hw);  in ieee802154_release_queue()
84 	spin_unlock_irqrestore(&local->phy->queue_lock, flags);  in ieee802154_release_queue()
87 void ieee802154_disable_queue(struct ieee802154_local *local)  in ieee802154_disable_queue()  argument
92 	list_for_each_entry_rcu(sdata, &local->interfaces, list) {  in ieee802154_disable_queue()
93 		if (!sdata->dev)  in ieee802154_disable_queue()
96 		netif_tx_disable(sdata->dev);  in ieee802154_disable_queue()
101 enum hrtimer_restart ieee802154_xmit_ifs_timer(struct hrtimer *timer)  in ieee802154_xmit_ifs_timer()  argument
103 	struct ieee802154_local *local =  in ieee802154_xmit_ifs_timer()  local
104 		container_of(timer, struct ieee802154_local, ifs_timer);  in ieee802154_xmit_ifs_timer()
106 	ieee802154_release_queue(local);  in ieee802154_xmit_ifs_timer()
114 	struct ieee802154_local *local = hw_to_local(hw);  in ieee802154_xmit_complete()  local
116 	local->tx_result = IEEE802154_SUCCESS;  in ieee802154_xmit_complete()
123 		 * part of skb->len.  in ieee802154_xmit_complete()
125 		if (hw->flags & IEEE802154_HW_TX_OMIT_CKSUM)  in ieee802154_xmit_complete()
126 			max_sifs_size = IEEE802154_MAX_SIFS_FRAME_SIZE -  in ieee802154_xmit_complete()
131 		if (skb->len > max_sifs_size)  in ieee802154_xmit_complete()
132 			hrtimer_start(&local->ifs_timer,  in ieee802154_xmit_complete()
133 				      hw->phy->lifs_period * NSEC_PER_USEC,  in ieee802154_xmit_complete()
136 			hrtimer_start(&local->ifs_timer,  in ieee802154_xmit_complete()
137 				      hw->phy->sifs_period * NSEC_PER_USEC,  in ieee802154_xmit_complete()
140 		ieee802154_release_queue(local);  in ieee802154_xmit_complete()
144 	if (atomic_dec_and_test(&hw->phy->ongoing_txs))  in ieee802154_xmit_complete()
145 		wake_up(&hw->phy->sync_txq);  in ieee802154_xmit_complete()
152 	struct ieee802154_local *local = hw_to_local(hw);  in ieee802154_xmit_error()  local
154 	local->tx_result = reason;  in ieee802154_xmit_error()
155 	ieee802154_release_queue(local);  in ieee802154_xmit_error()
157 	if (atomic_dec_and_test(&hw->phy->ongoing_txs))  in ieee802154_xmit_error()
158 		wake_up(&hw->phy->sync_txq);  in ieee802154_xmit_error()
168 void ieee802154_stop_device(struct ieee802154_local *local)  in ieee802154_stop_device()  argument
170 	flush_workqueue(local->workqueue);  in ieee802154_stop_device()
171 	hrtimer_cancel(&local->ifs_timer);  in ieee802154_stop_device()
172 	drv_stop(local);  in ieee802154_stop_device()