/* 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();

  	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();

  	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();

  	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();

  	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();

  	wpan_dev->lbt = mode;
  	return 0;
  }

  static int
  ieee802154_set_ackreq_default(struct wpan_phy *wpan_phy,
  			      struct wpan_dev *wpan_dev, bool ackreq)
  {
  	ASSERT_RTNL();
  
  	wpan_dev->ackreq = ackreq;
  	return 0;
  }

  #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
  static void
  ieee802154_get_llsec_table(struct wpan_phy *wpan_phy,
  			   struct wpan_dev *wpan_dev,
  			   struct ieee802154_llsec_table **table)
  {
  	struct net_device *dev = wpan_dev->netdev;
  	struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
  
  	*table = &sdata->sec.table;
  }
  
  static void
  ieee802154_lock_llsec_table(struct wpan_phy *wpan_phy,
  			    struct wpan_dev *wpan_dev)
  {
  	struct net_device *dev = wpan_dev->netdev;
  	struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
  
  	mutex_lock(&sdata->sec_mtx);
  }
  
  static void
  ieee802154_unlock_llsec_table(struct wpan_phy *wpan_phy,
  			      struct wpan_dev *wpan_dev)
  {
  	struct net_device *dev = wpan_dev->netdev;
  	struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
  
  	mutex_unlock(&sdata->sec_mtx);
  }
  
  static int
  ieee802154_set_llsec_params(struct wpan_phy *wpan_phy,
  			    struct wpan_dev *wpan_dev,
  			    const struct ieee802154_llsec_params *params,
  			    int changed)
  {
  	struct net_device *dev = wpan_dev->netdev;
  	struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
  	int res;
  
  	mutex_lock(&sdata->sec_mtx);
  	res = mac802154_llsec_set_params(&sdata->sec, params, changed);
  	mutex_unlock(&sdata->sec_mtx);
  
  	return res;
  }
  
  static int
  ieee802154_get_llsec_params(struct wpan_phy *wpan_phy,
  			    struct wpan_dev *wpan_dev,
  			    struct ieee802154_llsec_params *params)
  {
  	struct net_device *dev = wpan_dev->netdev;
  	struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
  	int res;
  
  	mutex_lock(&sdata->sec_mtx);
  	res = mac802154_llsec_get_params(&sdata->sec, params);
  	mutex_unlock(&sdata->sec_mtx);
  
  	return res;
  }
  
  static int
  ieee802154_add_llsec_key(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
  			 const struct ieee802154_llsec_key_id *id,
  			 const struct ieee802154_llsec_key *key)
  {
  	struct net_device *dev = wpan_dev->netdev;
  	struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
  	int res;
  
  	mutex_lock(&sdata->sec_mtx);
  	res = mac802154_llsec_key_add(&sdata->sec, id, key);
  	mutex_unlock(&sdata->sec_mtx);
  
  	return res;
  }
  
  static int
  ieee802154_del_llsec_key(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
  			 const struct ieee802154_llsec_key_id *id)
  {
  	struct net_device *dev = wpan_dev->netdev;
  	struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
  	int res;
  
  	mutex_lock(&sdata->sec_mtx);
  	res = mac802154_llsec_key_del(&sdata->sec, id);
  	mutex_unlock(&sdata->sec_mtx);
  
  	return res;
  }
  
  static int
  ieee802154_add_seclevel(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
  			const struct ieee802154_llsec_seclevel *sl)
  {
  	struct net_device *dev = wpan_dev->netdev;
  	struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
  	int res;
  
  	mutex_lock(&sdata->sec_mtx);
  	res = mac802154_llsec_seclevel_add(&sdata->sec, sl);
  	mutex_unlock(&sdata->sec_mtx);
  
  	return res;
  }
  
  static int
  ieee802154_del_seclevel(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
  			const struct ieee802154_llsec_seclevel *sl)
  {
  	struct net_device *dev = wpan_dev->netdev;
  	struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
  	int res;
  
  	mutex_lock(&sdata->sec_mtx);
  	res = mac802154_llsec_seclevel_del(&sdata->sec, sl);
  	mutex_unlock(&sdata->sec_mtx);
  
  	return res;
  }
  
  static int
  ieee802154_add_device(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
  		      const struct ieee802154_llsec_device *dev_desc)
  {
  	struct net_device *dev = wpan_dev->netdev;
  	struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
  	int res;
  
  	mutex_lock(&sdata->sec_mtx);
  	res = mac802154_llsec_dev_add(&sdata->sec, dev_desc);
  	mutex_unlock(&sdata->sec_mtx);
  
  	return res;
  }
  
  static int
  ieee802154_del_device(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
  		      __le64 extended_addr)
  {
  	struct net_device *dev = wpan_dev->netdev;
  	struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
  	int res;
  
  	mutex_lock(&sdata->sec_mtx);
  	res = mac802154_llsec_dev_del(&sdata->sec, extended_addr);
  	mutex_unlock(&sdata->sec_mtx);
  
  	return res;
  }
  
  static int
  ieee802154_add_devkey(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
  		      __le64 extended_addr,
  		      const struct ieee802154_llsec_device_key *key)
  {
  	struct net_device *dev = wpan_dev->netdev;
  	struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
  	int res;
  
  	mutex_lock(&sdata->sec_mtx);
  	res = mac802154_llsec_devkey_add(&sdata->sec, extended_addr, key);
  	mutex_unlock(&sdata->sec_mtx);
  
  	return res;
  }
  
  static int
  ieee802154_del_devkey(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
  		      __le64 extended_addr,
  		      const struct ieee802154_llsec_device_key *key)
  {
  	struct net_device *dev = wpan_dev->netdev;
  	struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
  	int res;
  
  	mutex_lock(&sdata->sec_mtx);
  	res = mac802154_llsec_devkey_del(&sdata->sec, extended_addr, key);
  	mutex_unlock(&sdata->sec_mtx);
  
  	return res;
  }
  #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */

  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,

  	.set_ackreq_default = ieee802154_set_ackreq_default,

  #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
  	.get_llsec_table = ieee802154_get_llsec_table,
  	.lock_llsec_table = ieee802154_lock_llsec_table,
  	.unlock_llsec_table = ieee802154_unlock_llsec_table,
  	/* TODO above */
  	.set_llsec_params = ieee802154_set_llsec_params,
  	.get_llsec_params = ieee802154_get_llsec_params,
  	.add_llsec_key = ieee802154_add_llsec_key,
  	.del_llsec_key = ieee802154_del_llsec_key,
  	.add_seclevel = ieee802154_add_seclevel,
  	.del_seclevel = ieee802154_del_seclevel,
  	.add_device = ieee802154_add_device,
  	.del_device = ieee802154_del_device,
  	.add_devkey = ieee802154_add_devkey,
  	.del_devkey = ieee802154_del_devkey,
  #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */

  };