103 lines
2.7 KiB
C
103 lines
2.7 KiB
C
/* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* Authors:
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* Alexander Aring <aar@pengutronix.de>
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*
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* Based on: net/mac80211/util.c
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*/
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#include "ieee802154_i.h"
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#include "driver-ops.h"
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/* privid for wpan_phys to determine whether they belong to us or not */
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const void *const mac802154_wpan_phy_privid = &mac802154_wpan_phy_privid;
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void ieee802154_wake_queue(struct ieee802154_hw *hw)
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{
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struct ieee802154_local *local = hw_to_local(hw);
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struct ieee802154_sub_if_data *sdata;
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rcu_read_lock();
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list_for_each_entry_rcu(sdata, &local->interfaces, list) {
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if (!sdata->dev)
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continue;
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netif_wake_queue(sdata->dev);
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}
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rcu_read_unlock();
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}
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EXPORT_SYMBOL(ieee802154_wake_queue);
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void ieee802154_stop_queue(struct ieee802154_hw *hw)
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{
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struct ieee802154_local *local = hw_to_local(hw);
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struct ieee802154_sub_if_data *sdata;
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rcu_read_lock();
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list_for_each_entry_rcu(sdata, &local->interfaces, list) {
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if (!sdata->dev)
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continue;
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netif_stop_queue(sdata->dev);
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}
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rcu_read_unlock();
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}
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EXPORT_SYMBOL(ieee802154_stop_queue);
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enum hrtimer_restart ieee802154_xmit_ifs_timer(struct hrtimer *timer)
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{
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struct ieee802154_local *local =
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container_of(timer, struct ieee802154_local, ifs_timer);
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ieee802154_wake_queue(&local->hw);
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return HRTIMER_NORESTART;
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}
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void ieee802154_xmit_complete(struct ieee802154_hw *hw, struct sk_buff *skb,
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bool ifs_handling)
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{
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if (ifs_handling) {
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struct ieee802154_local *local = hw_to_local(hw);
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u8 max_sifs_size;
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/* If transceiver sets CRC on his own we need to use lifs
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* threshold len above 16 otherwise 18, because it's not
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* part of skb->len.
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*/
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if (hw->flags & IEEE802154_HW_TX_OMIT_CKSUM)
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max_sifs_size = IEEE802154_MAX_SIFS_FRAME_SIZE -
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IEEE802154_FCS_LEN;
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else
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max_sifs_size = IEEE802154_MAX_SIFS_FRAME_SIZE;
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if (skb->len > max_sifs_size)
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hrtimer_start(&local->ifs_timer,
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ktime_set(0, hw->phy->lifs_period * NSEC_PER_USEC),
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HRTIMER_MODE_REL);
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else
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hrtimer_start(&local->ifs_timer,
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ktime_set(0, hw->phy->sifs_period * NSEC_PER_USEC),
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HRTIMER_MODE_REL);
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} else {
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ieee802154_wake_queue(hw);
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}
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dev_consume_skb_any(skb);
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}
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EXPORT_SYMBOL(ieee802154_xmit_complete);
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void ieee802154_stop_device(struct ieee802154_local *local)
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{
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flush_workqueue(local->workqueue);
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hrtimer_cancel(&local->ifs_timer);
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drv_stop(local);
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}
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