/* 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();
}
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();
}
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;
}

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);
}
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);
}
a href='/cgit.cgi/linux/net-next.git/log/?h=nds-private-remove&amp;id=a8c9701427987d959fec3f99bb2811d943686b7b'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/net?h=nds-private-remove&amp;id=a8c9701427987d959fec3f99bb2811d943686b7b'>net</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/net?h=nds-private-remove&amp;id=a8c9701427987d959fec3f99bb2811d943686b7b&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
<tr><td><span title='2017-02-08 14:39:19 -0500'>2017-02-08</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?h=nds-private-remove&amp;id=8ef9594764617e3fd4500205b080b53c45c14c4b'>bridge: vlan tunnel id info range fill size calc cleanups</a></td><td>Roopa Prabhu</td><td>1</td><td><span class='deletions'>-18</span>/<span class='insertions'>+16</span></td></tr>
<tr><td><span title='2017-02-08 14:38:18 -0500'>2017-02-08</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?h=nds-private-remove&amp;id=97e219b7c1f75b14b29abe28ad53e8709e8d15e5'>gro_cells: move to net/core/gro_cells.c</a></td><td>Eric Dumazet</td><td>6</td><td><span class='deletions'>-0</span>/<span class='insertions'>+100</span></td></tr>
<tr><td><span title='2017-02-07 16:29:30 -0500'>2017-02-07</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?h=nds-private-remove&amp;id=3efa70d78f218e4c9276b0bac0545e5184c1c47b'>Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net</a></td><td>David S. Miller