linux-stable/net/mac802154/util.c
Thomas Gleixner 1802d0beec treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174
Based on 1 normalized pattern(s):

  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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 655 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070034.575739538@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:41 -07:00

96 lines
2.3 KiB
C

// SPDX-License-Identifier: GPL-2.0-only
/*
*
* 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);
}