[linux-2.6-block.git] / net / mac802154 / util.c

/* 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"

/* 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);

		if (skb->len > 18)
			hrtimer_start(&local->ifs_timer,
				      ktime_set(0, hw->phy->lifs_period * NSEC_PER_USEC),
				      HRTIMER_MODE_REL);
		else
			hrtimer_start(&local->ifs_timer,
				      ktime_set(0, hw->phy->sifs_period * NSEC_PER_USEC),
				      HRTIMER_MODE_REL);

		consume_skb(skb);
	} else {
		ieee802154_wake_queue(hw);
		consume_skb(skb);
	}
}
EXPORT_SYMBOL(ieee802154_xmit_complete);
Commit	Line	Data
c2085103 AA	1	/* This program is free software; you can redistribute it and/or modify
	2	* it under the terms of the GNU General Public License version 2
	3	* as published by the Free Software Foundation.
	4	*
	5	* This program is distributed in the hope that it will be useful,
	6	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	7	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	8	* GNU General Public License for more details.
	9	*
	10	* Authors:
	11	* Alexander Aring <aar@pengutronix.de>
	12	*
	13	* Based on: net/mac80211/util.c
	14	*/
	15
	16	#include "ieee802154_i.h"
	17
6322d50d AA	18	/* privid for wpan_phys to determine whether they belong to us or not */
	19	const void *const mac802154_wpan_phy_privid = &mac802154_wpan_phy_privid;
	20
c2085103 AA	21	void ieee802154_wake_queue(struct ieee802154_hw *hw)
	22	{
	23	struct ieee802154_local *local = hw_to_local(hw);
	24	struct ieee802154_sub_if_data *sdata;
	25
	26	rcu_read_lock();
	27	list_for_each_entry_rcu(sdata, &local->interfaces, list) {
	28	if (!sdata->dev)
	29	continue;
	30
	31	netif_wake_queue(sdata->dev);
	32	}
	33	rcu_read_unlock();
	34	}
	35	EXPORT_SYMBOL(ieee802154_wake_queue);
	36
	37	void ieee802154_stop_queue(struct ieee802154_hw *hw)
	38	{
	39	struct ieee802154_local *local = hw_to_local(hw);
	40	struct ieee802154_sub_if_data *sdata;
	41
	42	rcu_read_lock();
	43	list_for_each_entry_rcu(sdata, &local->interfaces, list) {
	44	if (!sdata->dev)
	45	continue;
	46
	47	netif_stop_queue(sdata->dev);
	48	}
	49	rcu_read_unlock();
	50	}
	51	EXPORT_SYMBOL(ieee802154_stop_queue);
	52
61f2dcba	53	enum hrtimer_restart ieee802154_xmit_ifs_timer(struct hrtimer *timer)
c2085103	54	{
61f2dcba AA	55	struct ieee802154_local *local =
	56	container_of(timer, struct ieee802154_local, ifs_timer);
	57
	58	ieee802154_wake_queue(&local->hw);
	59
	60	return HRTIMER_NORESTART;
	61	}
	62
	63	void ieee802154_xmit_complete(struct ieee802154_hw hw, struct sk_buff skb,
	64	bool ifs_handling)
	65	{
	66	if (ifs_handling) {
	67	struct ieee802154_local *local = hw_to_local(hw);
	68
	69	if (skb->len > 18)
	70	hrtimer_start(&local->ifs_timer,
	71	ktime_set(0, hw->phy->lifs_period * NSEC_PER_USEC),
	72	HRTIMER_MODE_REL);
	73	else
	74	hrtimer_start(&local->ifs_timer,
	75	ktime_set(0, hw->phy->sifs_period * NSEC_PER_USEC),
	76	HRTIMER_MODE_REL);
	77
	78	consume_skb(skb);
	79	} else {
	80	ieee802154_wake_queue(hw);
	81	consume_skb(skb);
	82	}
c2085103 AA	83	}
c2085103 AA	84	EXPORT_SYMBOL(ieee802154_xmit_complete);