cregit-Linux how code gets into the kernel

Release 4.11 net/mac802154/util.c

Directory: net/mac802154
/* This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * Authors:
 * Alexander Aring <aar@pengutronix.de>
 *
 * Based on: net/mac80211/util.c
 */

#include "ieee802154_i.h"
#include "driver-ops.h"

/* privid for wpan_phys to determine whether they belong to us or not */

const void *const mac802154_wpan_phy_privid = &mac802154_wpan_phy_privid;


void ieee802154_wake_queue(struct ieee802154_hw *hw) { struct ieee802154_local *local = hw_to_local(hw); struct ieee802154_sub_if_data *sdata; rcu_read_lock(); list_for_each_entry_rcu(sdata, &local->interfaces, list) { if (!sdata->dev) continue; netif_wake_queue(sdata->dev); } rcu_read_unlock(); }

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EXPORT_SYMBOL(ieee802154_wake_queue);
void ieee802154_stop_queue(struct ieee802154_hw *hw) { struct ieee802154_local *local = hw_to_local(hw); struct ieee802154_sub_if_data *sdata; rcu_read_lock(); list_for_each_entry_rcu(sdata, &local->interfaces, list) { if (!sdata->dev) continue; netif_stop_queue(sdata->dev); } rcu_read_unlock(); }

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EXPORT_SYMBOL(ieee802154_stop_queue);
enum hrtimer_restart ieee802154_xmit_ifs_timer(struct hrtimer *timer) { struct ieee802154_local *local = container_of(timer, struct ieee802154_local, ifs_timer); ieee802154_wake_queue(&local->hw); return HRTIMER_NORESTART; }

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void ieee802154_xmit_complete(struct ieee802154_hw *hw, struct sk_buff *skb, bool ifs_handling) { if (ifs_handling) { struct ieee802154_local *local = hw_to_local(hw); u8 max_sifs_size; /* If transceiver sets CRC on his own we need to use lifs * threshold len above 16 otherwise 18, because it's not * part of skb->len. */ if (hw->flags & IEEE802154_HW_TX_OMIT_CKSUM) max_sifs_size = IEEE802154_MAX_SIFS_FRAME_SIZE - IEEE802154_FCS_LEN; else max_sifs_size = IEEE802154_MAX_SIFS_FRAME_SIZE; if (skb->len > max_sifs_size) hrtimer_start(&local->ifs_timer, hw->phy->lifs_period * NSEC_PER_USEC, HRTIMER_MODE_REL); else hrtimer_start(&local->ifs_timer, hw->phy->sifs_period * NSEC_PER_USEC, HRTIMER_MODE_REL); } else { ieee802154_wake_queue(hw); } dev_consume_skb_any(skb); }

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EXPORT_SYMBOL(ieee802154_xmit_complete);
void ieee802154_stop_device(struct ieee802154_local *local) { flush_workqueue(local->workqueue); hrtimer_cancel(&local->ifs_timer); drv_stop(local); }

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Directory: net/mac802154
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