mirror of
https://github.com/torvalds/linux.git
synced 2024-11-30 16:11:38 +00:00
8b0e195314
ktime_set(S,N) was required for the timespec storage type and is still useful for situations where a Seconds and Nanoseconds part of a time value needs to be converted. For anything where the Seconds argument is 0, this is pointless and can be replaced with a simple assignment. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org>
103 lines
2.7 KiB
C
103 lines
2.7 KiB
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"
|
|
#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);
|
|
}
|