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/*
* Copyright 2007-2012 Siemens AG
*
* 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.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Written by:
* Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
* Sergey Lapin <slapin@ossfans.org>
* Maxim Gorbachyov <maxim.gorbachev@siemens.com>
* Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
*/
#include <linux/if_arp.h>
#include <net/mac802154.h>
#include <net/ieee802154_netdev.h>
#include <net/wpan-phy.h>
#include "mac802154.h"
struct phy_chan_notify_work {
struct work_struct work;
struct net_device *dev;
};
struct hw_addr_filt_notify_work {
struct work_struct work;
struct net_device *dev;
unsigned long changed;
};
static struct mac802154_priv *mac802154_slave_get_priv(struct net_device *dev)
{
struct mac802154_sub_if_data *priv = netdev_priv(dev);
BUG_ON(dev->type != ARPHRD_IEEE802154);
return priv->hw;
}
static void hw_addr_notify(struct work_struct *work)
{
struct hw_addr_filt_notify_work *nw = container_of(work,
struct hw_addr_filt_notify_work, work);
struct mac802154_priv *hw = mac802154_slave_get_priv(nw->dev);
int res;
res = hw->ops->set_hw_addr_filt(&hw->hw,
&hw->hw.hw_filt,
nw->changed);
if (res)
pr_debug("failed changed mask %lx\n", nw->changed);
kfree(nw);
}
static void set_hw_addr_filt(struct net_device *dev, unsigned long changed)
{
struct mac802154_sub_if_data *priv = netdev_priv(dev);
struct hw_addr_filt_notify_work *work;
work = kzalloc(sizeof(*work), GFP_ATOMIC);
if (!work)
return;
INIT_WORK(&work->work, hw_addr_notify);
work->dev = dev;
work->changed = changed;
queue_work(priv->hw->dev_workqueue, &work->work);
}
void mac802154_dev_set_short_addr(struct net_device *dev, __le16 val)
{
struct mac802154_sub_if_data *priv = netdev_priv(dev);
BUG_ON(dev->type != ARPHRD_IEEE802154);
spin_lock_bh(&priv->mib_lock);
priv->short_addr = val;
spin_unlock_bh(&priv->mib_lock);
if ((priv->hw->ops->set_hw_addr_filt) &&
(priv->hw->hw.hw_filt.short_addr != priv->short_addr)) {
priv->hw->hw.hw_filt.short_addr = priv->short_addr;
set_hw_addr_filt(dev, IEEE802515_AFILT_SADDR_CHANGED);
}
}
__le16 mac802154_dev_get_short_addr(const struct net_device *dev)
{
struct mac802154_sub_if_data *priv = netdev_priv(dev);
__le16 ret;
BUG_ON(dev->type != ARPHRD_IEEE802154);
spin_lock_bh(&priv->mib_lock);
ret = priv->short_addr;
spin_unlock_bh(&priv->mib_lock);
return ret;
}
void mac802154_dev_set_ieee_addr(struct net_device *dev)
{
struct mac802154_sub_if_data *priv = netdev_priv(dev);
struct mac802154_priv *mac = priv->hw;
priv->extended_addr = ieee802154_devaddr_from_raw(dev->dev_addr);
if (mac->ops->set_hw_addr_filt &&
mac->hw.hw_filt.ieee_addr != priv->extended_addr) {
mac->hw.hw_filt.ieee_addr = priv->extended_addr;
set_hw_addr_filt(dev, IEEE802515_AFILT_IEEEADDR_CHANGED);
}
}
__le16 mac802154_dev_get_pan_id(const struct net_device *dev)
{
struct mac802154_sub_if_data *priv = netdev_priv(dev);
__le16 ret;
BUG_ON(dev->type != ARPHRD_IEEE802154);
spin_lock_bh(&priv->mib_lock);
ret = priv->pan_id;
spin_unlock_bh(&priv->mib_lock);
return ret;
}
void mac802154_dev_set_pan_id(struct net_device *dev, __le16 val)
{
struct mac802154_sub_if_data *priv = netdev_priv(dev);
BUG_ON(dev->type != ARPHRD_IEEE802154);
spin_lock_bh(&priv->mib_lock);
priv->pan_id = val;
spin_unlock_bh(&priv->mib_lock);
if ((priv->hw->ops->set_hw_addr_filt) &&
(priv->hw->hw.hw_filt.pan_id != priv->pan_id)) {
priv->hw->hw.hw_filt.pan_id = priv->pan_id;
set_hw_addr_filt(dev, IEEE802515_AFILT_PANID_CHANGED);
}
}
u8 mac802154_dev_get_dsn(const struct net_device *dev)
{
struct mac802154_sub_if_data *priv = netdev_priv(dev);
BUG_ON(dev->type != ARPHRD_IEEE802154);
return priv->dsn++;
}
static void phy_chan_notify(struct work_struct *work)
{
struct phy_chan_notify_work *nw = container_of(work,
struct phy_chan_notify_work, work);
struct mac802154_priv *hw = mac802154_slave_get_priv(nw->dev);
struct mac802154_sub_if_data *priv = netdev_priv(nw->dev);
int res;
mutex_lock(&priv->hw->phy->pib_lock);
res = hw->ops->set_channel(&hw->hw, priv->page, priv->chan);
if (res)
pr_debug("set_channel failed\n");
else {
priv->hw->phy->current_channel = priv->chan;
priv->hw->phy->current_page = priv->page;
}
mutex_unlock(&priv->hw->phy->pib_lock);
kfree(nw);
}
void mac802154_dev_set_page_channel(struct net_device *dev, u8 page, u8 chan)
{
struct mac802154_sub_if_data *priv = netdev_priv(dev);
struct phy_chan_notify_work *work;
BUG_ON(dev->type != ARPHRD_IEEE802154);
spin_lock_bh(&priv->mib_lock);
priv->page = page;
priv->chan = chan;
spin_unlock_bh(&priv->mib_lock);
mutex_lock(&priv->hw->phy->pib_lock);
if (priv->hw->phy->current_channel != priv->chan ||
priv->hw->phy->current_page != priv->page) {
mutex_unlock(&priv->hw->phy->pib_lock);
work = kzalloc(sizeof(*work), GFP_ATOMIC);
if (!work)
return;
INIT_WORK(&work->work, phy_chan_notify);
work->dev = dev;
queue_work(priv->hw->dev_workqueue, &work->work);
} else
mutex_unlock(&priv->hw->phy->pib_lock);
}
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