forked from luck/tmp_suning_uos_patched
3cf24cf8c3
This patch introduces suspend and resume callbacks to mac802154. When doing suspend we calling the stop driver callback which should stop the receiving of frames. A transceiver should go into low-power mode then. Calling resume will call the start driver callback, which starts receiving again and allow to transmit frames. This was tested only with the fakelb driver and a qemu vm by doing the following commands: echo "devices" > /sys/power/pm_test echo "freeze" > /sys/power/state while doing some high traffic between two fakelb phys. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
293 lines
6.2 KiB
C
293 lines
6.2 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/cfg.c
|
|
*/
|
|
|
|
#include <net/rtnetlink.h>
|
|
#include <net/cfg802154.h>
|
|
|
|
#include "ieee802154_i.h"
|
|
#include "driver-ops.h"
|
|
#include "cfg.h"
|
|
|
|
static struct net_device *
|
|
ieee802154_add_iface_deprecated(struct wpan_phy *wpan_phy,
|
|
const char *name,
|
|
unsigned char name_assign_type, int type)
|
|
{
|
|
struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
|
|
struct net_device *dev;
|
|
|
|
rtnl_lock();
|
|
dev = ieee802154_if_add(local, name, name_assign_type, type,
|
|
cpu_to_le64(0x0000000000000000ULL));
|
|
rtnl_unlock();
|
|
|
|
return dev;
|
|
}
|
|
|
|
static void ieee802154_del_iface_deprecated(struct wpan_phy *wpan_phy,
|
|
struct net_device *dev)
|
|
{
|
|
struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
|
|
|
|
ieee802154_if_remove(sdata);
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int ieee802154_suspend(struct wpan_phy *wpan_phy)
|
|
{
|
|
struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
|
|
|
|
if (!local->open_count)
|
|
goto suspend;
|
|
|
|
ieee802154_stop_queue(&local->hw);
|
|
synchronize_net();
|
|
|
|
/* stop hardware - this must stop RX */
|
|
ieee802154_stop_device(local);
|
|
|
|
suspend:
|
|
local->suspended = true;
|
|
return 0;
|
|
}
|
|
|
|
static int ieee802154_resume(struct wpan_phy *wpan_phy)
|
|
{
|
|
struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
|
|
int ret;
|
|
|
|
/* nothing to do if HW shouldn't run */
|
|
if (!local->open_count)
|
|
goto wake_up;
|
|
|
|
/* restart hardware */
|
|
ret = drv_start(local);
|
|
if (ret)
|
|
return ret;
|
|
|
|
wake_up:
|
|
ieee802154_wake_queue(&local->hw);
|
|
local->suspended = false;
|
|
return 0;
|
|
}
|
|
#else
|
|
#define ieee802154_suspend NULL
|
|
#define ieee802154_resume NULL
|
|
#endif
|
|
|
|
static int
|
|
ieee802154_add_iface(struct wpan_phy *phy, const char *name,
|
|
unsigned char name_assign_type,
|
|
enum nl802154_iftype type, __le64 extended_addr)
|
|
{
|
|
struct ieee802154_local *local = wpan_phy_priv(phy);
|
|
struct net_device *err;
|
|
|
|
err = ieee802154_if_add(local, name, name_assign_type, type,
|
|
extended_addr);
|
|
return PTR_ERR_OR_ZERO(err);
|
|
}
|
|
|
|
static int
|
|
ieee802154_del_iface(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev)
|
|
{
|
|
ieee802154_if_remove(IEEE802154_WPAN_DEV_TO_SUB_IF(wpan_dev));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
ieee802154_set_channel(struct wpan_phy *wpan_phy, u8 page, u8 channel)
|
|
{
|
|
struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
|
|
int ret;
|
|
|
|
ASSERT_RTNL();
|
|
|
|
if (wpan_phy->current_page == page &&
|
|
wpan_phy->current_channel == channel)
|
|
return 0;
|
|
|
|
ret = drv_set_channel(local, page, channel);
|
|
if (!ret) {
|
|
wpan_phy->current_page = page;
|
|
wpan_phy->current_channel = channel;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
ieee802154_set_cca_mode(struct wpan_phy *wpan_phy,
|
|
const struct wpan_phy_cca *cca)
|
|
{
|
|
struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
|
|
int ret;
|
|
|
|
ASSERT_RTNL();
|
|
|
|
if (wpan_phy_cca_cmp(&wpan_phy->cca, cca))
|
|
return 0;
|
|
|
|
ret = drv_set_cca_mode(local, cca);
|
|
if (!ret)
|
|
wpan_phy->cca = *cca;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
ieee802154_set_cca_ed_level(struct wpan_phy *wpan_phy, s32 ed_level)
|
|
{
|
|
struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
|
|
int ret;
|
|
|
|
ASSERT_RTNL();
|
|
|
|
if (wpan_phy->cca_ed_level == ed_level)
|
|
return 0;
|
|
|
|
ret = drv_set_cca_ed_level(local, ed_level);
|
|
if (!ret)
|
|
wpan_phy->cca_ed_level = ed_level;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
ieee802154_set_tx_power(struct wpan_phy *wpan_phy, s32 power)
|
|
{
|
|
struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
|
|
int ret;
|
|
|
|
ASSERT_RTNL();
|
|
|
|
if (wpan_phy->transmit_power == power)
|
|
return 0;
|
|
|
|
ret = drv_set_tx_power(local, power);
|
|
if (!ret)
|
|
wpan_phy->transmit_power = power;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
ieee802154_set_pan_id(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
|
|
__le16 pan_id)
|
|
{
|
|
int ret;
|
|
|
|
ASSERT_RTNL();
|
|
|
|
if (wpan_dev->pan_id == pan_id)
|
|
return 0;
|
|
|
|
ret = mac802154_wpan_update_llsec(wpan_dev->netdev);
|
|
if (!ret)
|
|
wpan_dev->pan_id = pan_id;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
ieee802154_set_backoff_exponent(struct wpan_phy *wpan_phy,
|
|
struct wpan_dev *wpan_dev,
|
|
u8 min_be, u8 max_be)
|
|
{
|
|
ASSERT_RTNL();
|
|
|
|
if (wpan_dev->min_be == min_be &&
|
|
wpan_dev->max_be == max_be)
|
|
return 0;
|
|
|
|
wpan_dev->min_be = min_be;
|
|
wpan_dev->max_be = max_be;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
ieee802154_set_short_addr(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
|
|
__le16 short_addr)
|
|
{
|
|
ASSERT_RTNL();
|
|
|
|
if (wpan_dev->short_addr == short_addr)
|
|
return 0;
|
|
|
|
wpan_dev->short_addr = short_addr;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
ieee802154_set_max_csma_backoffs(struct wpan_phy *wpan_phy,
|
|
struct wpan_dev *wpan_dev,
|
|
u8 max_csma_backoffs)
|
|
{
|
|
ASSERT_RTNL();
|
|
|
|
if (wpan_dev->csma_retries == max_csma_backoffs)
|
|
return 0;
|
|
|
|
wpan_dev->csma_retries = max_csma_backoffs;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
ieee802154_set_max_frame_retries(struct wpan_phy *wpan_phy,
|
|
struct wpan_dev *wpan_dev,
|
|
s8 max_frame_retries)
|
|
{
|
|
ASSERT_RTNL();
|
|
|
|
if (wpan_dev->frame_retries == max_frame_retries)
|
|
return 0;
|
|
|
|
wpan_dev->frame_retries = max_frame_retries;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
ieee802154_set_lbt_mode(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
|
|
bool mode)
|
|
{
|
|
ASSERT_RTNL();
|
|
|
|
if (wpan_dev->lbt == mode)
|
|
return 0;
|
|
|
|
wpan_dev->lbt = mode;
|
|
return 0;
|
|
}
|
|
|
|
const struct cfg802154_ops mac802154_config_ops = {
|
|
.add_virtual_intf_deprecated = ieee802154_add_iface_deprecated,
|
|
.del_virtual_intf_deprecated = ieee802154_del_iface_deprecated,
|
|
.suspend = ieee802154_suspend,
|
|
.resume = ieee802154_resume,
|
|
.add_virtual_intf = ieee802154_add_iface,
|
|
.del_virtual_intf = ieee802154_del_iface,
|
|
.set_channel = ieee802154_set_channel,
|
|
.set_cca_mode = ieee802154_set_cca_mode,
|
|
.set_cca_ed_level = ieee802154_set_cca_ed_level,
|
|
.set_tx_power = ieee802154_set_tx_power,
|
|
.set_pan_id = ieee802154_set_pan_id,
|
|
.set_short_addr = ieee802154_set_short_addr,
|
|
.set_backoff_exponent = ieee802154_set_backoff_exponent,
|
|
.set_max_csma_backoffs = ieee802154_set_max_csma_backoffs,
|
|
.set_max_frame_retries = ieee802154_set_max_frame_retries,
|
|
.set_lbt_mode = ieee802154_set_lbt_mode,
|
|
};
|