net/mac802154/util.c

1 // SPDX-License-Identifier: GPL-2.0-only
11 #include "driver-ops.h"
13 /* privid for wpan_phys to determine whether they belong to us or not */
17  * ieee802154_wake_queue - wake ieee802154 queue
21  * for both transmitting and receiving. Hence, the core currently only handles
22  * one frame at a time for each phy, which means we had to stop the queue to
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
47  * for both transmitting and receiving. Hence, the core currently only handles
48  * one frame at a time for each phy, which means we need to tell upper layers to
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()
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()
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()
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()
116 	local->tx_result = IEEE802154_SUCCESS;  in ieee802154_xmit_complete()
121 		/* If transceiver sets CRC on his own we need to use lifs  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()
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()
154 	local->tx_result = reason;  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()
170 	flush_workqueue(local->workqueue);  in ieee802154_stop_device()
171 	hrtimer_cancel(&local->ifs_timer);  in ieee802154_stop_device()