/* 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/wireless/nl80211.c
   */
  
  #include <linux/rtnetlink.h>
  
  #include <net/cfg802154.h>
  #include <net/genetlink.h>
  #include <net/mac802154.h>
  #include <net/netlink.h>
  #include <net/nl802154.h>
  #include <net/sock.h>
  
  #include "nl802154.h"

  #include "rdev-ops.h"

  #include "core.h"

  /* the netlink family */

  static struct genl_family nl802154_fam;

  
  /* multicast groups */
  enum nl802154_multicast_groups {
  	NL802154_MCGRP_CONFIG,
  };
  
  static const struct genl_multicast_group nl802154_mcgrps[] = {
  	[NL802154_MCGRP_CONFIG] = { .name = "config", },
  };
  
  /* returns ERR_PTR values */
  static struct wpan_dev *
  __cfg802154_wpan_dev_from_attrs(struct net *netns, struct nlattr **attrs)
  {
  	struct cfg802154_registered_device *rdev;
  	struct wpan_dev *result = NULL;
  	bool have_ifidx = attrs[NL802154_ATTR_IFINDEX];
  	bool have_wpan_dev_id = attrs[NL802154_ATTR_WPAN_DEV];
  	u64 wpan_dev_id;
  	int wpan_phy_idx = -1;
  	int ifidx = -1;
  
  	ASSERT_RTNL();
  
  	if (!have_ifidx && !have_wpan_dev_id)
  		return ERR_PTR(-EINVAL);
  
  	if (have_ifidx)
  		ifidx = nla_get_u32(attrs[NL802154_ATTR_IFINDEX]);
  	if (have_wpan_dev_id) {
  		wpan_dev_id = nla_get_u64(attrs[NL802154_ATTR_WPAN_DEV]);
  		wpan_phy_idx = wpan_dev_id >> 32;
  	}
  
  	list_for_each_entry(rdev, &cfg802154_rdev_list, list) {
  		struct wpan_dev *wpan_dev;

  		if (wpan_phy_net(&rdev->wpan_phy) != netns)
  			continue;

  
  		if (have_wpan_dev_id && rdev->wpan_phy_idx != wpan_phy_idx)
  			continue;
  
  		list_for_each_entry(wpan_dev, &rdev->wpan_dev_list, list) {
  			if (have_ifidx && wpan_dev->netdev &&
  			    wpan_dev->netdev->ifindex == ifidx) {
  				result = wpan_dev;
  				break;
  			}
  			if (have_wpan_dev_id &&
  			    wpan_dev->identifier == (u32)wpan_dev_id) {
  				result = wpan_dev;
  				break;
  			}
  		}
  
  		if (result)
  			break;
  	}
  
  	if (result)
  		return result;
  
  	return ERR_PTR(-ENODEV);
  }
  
  static struct cfg802154_registered_device *
  __cfg802154_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
  {
  	struct cfg802154_registered_device *rdev = NULL, *tmp;
  	struct net_device *netdev;
  
  	ASSERT_RTNL();
  
  	if (!attrs[NL802154_ATTR_WPAN_PHY] &&
  	    !attrs[NL802154_ATTR_IFINDEX] &&
  	    !attrs[NL802154_ATTR_WPAN_DEV])
  		return ERR_PTR(-EINVAL);
  
  	if (attrs[NL802154_ATTR_WPAN_PHY])
  		rdev = cfg802154_rdev_by_wpan_phy_idx(
  				nla_get_u32(attrs[NL802154_ATTR_WPAN_PHY]));
  
  	if (attrs[NL802154_ATTR_WPAN_DEV]) {
  		u64 wpan_dev_id = nla_get_u64(attrs[NL802154_ATTR_WPAN_DEV]);
  		struct wpan_dev *wpan_dev;
  		bool found = false;
  
  		tmp = cfg802154_rdev_by_wpan_phy_idx(wpan_dev_id >> 32);
  		if (tmp) {
  			/* make sure wpan_dev exists */
  			list_for_each_entry(wpan_dev, &tmp->wpan_dev_list, list) {
  				if (wpan_dev->identifier != (u32)wpan_dev_id)
  					continue;
  				found = true;
  				break;
  			}
  
  			if (!found)
  				tmp = NULL;
  
  			if (rdev && tmp != rdev)
  				return ERR_PTR(-EINVAL);
  			rdev = tmp;
  		}
  	}
  
  	if (attrs[NL802154_ATTR_IFINDEX]) {
  		int ifindex = nla_get_u32(attrs[NL802154_ATTR_IFINDEX]);
  
  		netdev = __dev_get_by_index(netns, ifindex);
  		if (netdev) {
  			if (netdev->ieee802154_ptr)
  				tmp = wpan_phy_to_rdev(
  						netdev->ieee802154_ptr->wpan_phy);
  			else
  				tmp = NULL;
  
  			/* not wireless device -- return error */
  			if (!tmp)
  				return ERR_PTR(-EINVAL);
  
  			/* mismatch -- return error */
  			if (rdev && tmp != rdev)
  				return ERR_PTR(-EINVAL);
  
  			rdev = tmp;
  		}
  	}
  
  	if (!rdev)
  		return ERR_PTR(-ENODEV);

  	if (netns != wpan_phy_net(&rdev->wpan_phy))
  		return ERR_PTR(-ENODEV);

  
  	return rdev;
  }
  
  /* This function returns a pointer to the driver
   * that the genl_info item that is passed refers to.
   *
   * The result of this can be a PTR_ERR and hence must
   * be checked with IS_ERR() for errors.
   */
  static struct cfg802154_registered_device *
  cfg802154_get_dev_from_info(struct net *netns, struct genl_info *info)
  {
  	return __cfg802154_rdev_from_attrs(netns, info->attrs);
  }
  
  /* policy for the attributes */
  static const struct nla_policy nl802154_policy[NL802154_ATTR_MAX+1] = {

  	[NL802154_ATTR_WPAN_PHY] = { .type = NLA_U32 },
  	[NL802154_ATTR_WPAN_PHY_NAME] = { .type = NLA_NUL_STRING,
  					  .len = 20-1 },
  
  	[NL802154_ATTR_IFINDEX] = { .type = NLA_U32 },

  	[NL802154_ATTR_IFTYPE] = { .type = NLA_U32 },
  	[NL802154_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },

  
  	[NL802154_ATTR_WPAN_DEV] = { .type = NLA_U64 },
  
  	[NL802154_ATTR_PAGE] = { .type = NLA_U8, },
  	[NL802154_ATTR_CHANNEL] = { .type = NLA_U8, },

  	[NL802154_ATTR_TX_POWER] = { .type = NLA_S32, },

  	[NL802154_ATTR_CCA_MODE] = { .type = NLA_U32, },
  	[NL802154_ATTR_CCA_OPT] = { .type = NLA_U32, },

  	[NL802154_ATTR_CCA_ED_LEVEL] = { .type = NLA_S32, },

  
  	[NL802154_ATTR_SUPPORTED_CHANNEL] = { .type = NLA_U32, },

  
  	[NL802154_ATTR_PAN_ID] = { .type = NLA_U16, },
  	[NL802154_ATTR_EXTENDED_ADDR] = { .type = NLA_U64 },
  	[NL802154_ATTR_SHORT_ADDR] = { .type = NLA_U16, },
  
  	[NL802154_ATTR_MIN_BE] = { .type = NLA_U8, },
  	[NL802154_ATTR_MAX_BE] = { .type = NLA_U8, },
  	[NL802154_ATTR_MAX_CSMA_BACKOFFS] = { .type = NLA_U8, },
  
  	[NL802154_ATTR_MAX_FRAME_RETRIES] = { .type = NLA_S8, },
  
  	[NL802154_ATTR_LBT_MODE] = { .type = NLA_U8, },

  
  	[NL802154_ATTR_WPAN_PHY_CAPS] = { .type = NLA_NESTED },

  
  	[NL802154_ATTR_SUPPORTED_COMMANDS] = { .type = NLA_NESTED },

  
  	[NL802154_ATTR_ACKREQ_DEFAULT] = { .type = NLA_U8 },

  	[NL802154_ATTR_PID] = { .type = NLA_U32 },
  	[NL802154_ATTR_NETNS_FD] = { .type = NLA_U32 },

  #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
  	[NL802154_ATTR_SEC_ENABLED] = { .type = NLA_U8, },
  	[NL802154_ATTR_SEC_OUT_LEVEL] = { .type = NLA_U32, },
  	[NL802154_ATTR_SEC_OUT_KEY_ID] = { .type = NLA_NESTED, },
  	[NL802154_ATTR_SEC_FRAME_COUNTER] = { .type = NLA_U32 },
  
  	[NL802154_ATTR_SEC_LEVEL] = { .type = NLA_NESTED },
  	[NL802154_ATTR_SEC_DEVICE] = { .type = NLA_NESTED },
  	[NL802154_ATTR_SEC_DEVKEY] = { .type = NLA_NESTED },
  	[NL802154_ATTR_SEC_KEY] = { .type = NLA_NESTED },
  #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */

  };

  #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
  static int
  nl802154_prepare_wpan_dev_dump(struct sk_buff *skb,
  			       struct netlink_callback *cb,
  			       struct cfg802154_registered_device **rdev,
  			       struct wpan_dev **wpan_dev)
  {
  	int err;
  
  	rtnl_lock();
  
  	if (!cb->args[0]) {
  		err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl802154_fam.hdrsize,

  				  genl_family_attrbuf(&nl802154_fam),

  				  nl802154_fam.maxattr, nl802154_policy, NULL);

  		if (err)
  			goto out_unlock;
  
  		*wpan_dev = __cfg802154_wpan_dev_from_attrs(sock_net(skb->sk),

  							    genl_family_attrbuf(&nl802154_fam));

  		if (IS_ERR(*wpan_dev)) {
  			err = PTR_ERR(*wpan_dev);
  			goto out_unlock;
  		}
  		*rdev = wpan_phy_to_rdev((*wpan_dev)->wpan_phy);
  		/* 0 is the first index - add 1 to parse only once */
  		cb->args[0] = (*rdev)->wpan_phy_idx + 1;
  		cb->args[1] = (*wpan_dev)->identifier;
  	} else {
  		/* subtract the 1 again here */
  		struct wpan_phy *wpan_phy = wpan_phy_idx_to_wpan_phy(cb->args[0] - 1);
  		struct wpan_dev *tmp;
  
  		if (!wpan_phy) {
  			err = -ENODEV;
  			goto out_unlock;
  		}
  		*rdev = wpan_phy_to_rdev(wpan_phy);
  		*wpan_dev = NULL;
  
  		list_for_each_entry(tmp, &(*rdev)->wpan_dev_list, list) {
  			if (tmp->identifier == cb->args[1]) {
  				*wpan_dev = tmp;
  				break;
  			}
  		}
  
  		if (!*wpan_dev) {
  			err = -ENODEV;
  			goto out_unlock;
  		}
  	}
  
  	return 0;
   out_unlock:
  	rtnl_unlock();
  	return err;
  }
  
  static void
  nl802154_finish_wpan_dev_dump(struct cfg802154_registered_device *rdev)
  {
  	rtnl_unlock();
  }
  #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */

  /* message building helper */
  static inline void *nl802154hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
  				    int flags, u8 cmd)
  {
  	/* since there is no private header just add the generic one */
  	return genlmsg_put(skb, portid, seq, &nl802154_fam, flags, cmd);
  }

  static int

  nl802154_put_flags(struct sk_buff *msg, int attr, u32 mask)
  {
  	struct nlattr *nl_flags = nla_nest_start(msg, attr);
  	int i;
  
  	if (!nl_flags)
  		return -ENOBUFS;
  
  	i = 0;
  	while (mask) {
  		if ((mask & 1) && nla_put_flag(msg, i))
  			return -ENOBUFS;
  
  		mask >>= 1;
  		i++;
  	}
  
  	nla_nest_end(msg, nl_flags);
  	return 0;
  }
  
  static int

  nl802154_send_wpan_phy_channels(struct cfg802154_registered_device *rdev,
  				struct sk_buff *msg)
  {
  	struct nlattr *nl_page;
  	unsigned long page;
  
  	nl_page = nla_nest_start(msg, NL802154_ATTR_CHANNELS_SUPPORTED);
  	if (!nl_page)
  		return -ENOBUFS;

  	for (page = 0; page <= IEEE802154_MAX_PAGE; page++) {

  		if (nla_put_u32(msg, NL802154_ATTR_SUPPORTED_CHANNEL,

  				rdev->wpan_phy.supported.channels[page]))

  			return -ENOBUFS;
  	}
  	nla_nest_end(msg, nl_page);
  
  	return 0;
  }

  static int
  nl802154_put_capabilities(struct sk_buff *msg,
  			  struct cfg802154_registered_device *rdev)
  {
  	const struct wpan_phy_supported *caps = &rdev->wpan_phy.supported;
  	struct nlattr *nl_caps, *nl_channels;
  	int i;
  
  	nl_caps = nla_nest_start(msg, NL802154_ATTR_WPAN_PHY_CAPS);
  	if (!nl_caps)
  		return -ENOBUFS;
  
  	nl_channels = nla_nest_start(msg, NL802154_CAP_ATTR_CHANNELS);
  	if (!nl_channels)
  		return -ENOBUFS;
  
  	for (i = 0; i <= IEEE802154_MAX_PAGE; i++) {
  		if (caps->channels[i]) {
  			if (nl802154_put_flags(msg, i, caps->channels[i]))
  				return -ENOBUFS;
  		}
  	}
  
  	nla_nest_end(msg, nl_channels);
  
  	if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_ED_LEVEL) {
  		struct nlattr *nl_ed_lvls;
  
  		nl_ed_lvls = nla_nest_start(msg,
  					    NL802154_CAP_ATTR_CCA_ED_LEVELS);
  		if (!nl_ed_lvls)
  			return -ENOBUFS;
  
  		for (i = 0; i < caps->cca_ed_levels_size; i++) {
  			if (nla_put_s32(msg, i, caps->cca_ed_levels[i]))
  				return -ENOBUFS;
  		}
  
  		nla_nest_end(msg, nl_ed_lvls);
  	}
  
  	if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_TXPOWER) {
  		struct nlattr *nl_tx_pwrs;
  
  		nl_tx_pwrs = nla_nest_start(msg, NL802154_CAP_ATTR_TX_POWERS);
  		if (!nl_tx_pwrs)
  			return -ENOBUFS;
  
  		for (i = 0; i < caps->tx_powers_size; i++) {
  			if (nla_put_s32(msg, i, caps->tx_powers[i]))
  				return -ENOBUFS;
  		}
  
  		nla_nest_end(msg, nl_tx_pwrs);
  	}
  
  	if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_MODE) {
  		if (nl802154_put_flags(msg, NL802154_CAP_ATTR_CCA_MODES,
  				       caps->cca_modes) ||
  		    nl802154_put_flags(msg, NL802154_CAP_ATTR_CCA_OPTS,
  				       caps->cca_opts))
  			return -ENOBUFS;
  	}
  
  	if (nla_put_u8(msg, NL802154_CAP_ATTR_MIN_MINBE, caps->min_minbe) ||
  	    nla_put_u8(msg, NL802154_CAP_ATTR_MAX_MINBE, caps->max_minbe) ||
  	    nla_put_u8(msg, NL802154_CAP_ATTR_MIN_MAXBE, caps->min_maxbe) ||
  	    nla_put_u8(msg, NL802154_CAP_ATTR_MAX_MAXBE, caps->max_maxbe) ||
  	    nla_put_u8(msg, NL802154_CAP_ATTR_MIN_CSMA_BACKOFFS,
  		       caps->min_csma_backoffs) ||
  	    nla_put_u8(msg, NL802154_CAP_ATTR_MAX_CSMA_BACKOFFS,
  		       caps->max_csma_backoffs) ||
  	    nla_put_s8(msg, NL802154_CAP_ATTR_MIN_FRAME_RETRIES,
  		       caps->min_frame_retries) ||
  	    nla_put_s8(msg, NL802154_CAP_ATTR_MAX_FRAME_RETRIES,
  		       caps->max_frame_retries) ||
  	    nl802154_put_flags(msg, NL802154_CAP_ATTR_IFTYPES,
  			       caps->iftypes) ||
  	    nla_put_u32(msg, NL802154_CAP_ATTR_LBT, caps->lbt))
  		return -ENOBUFS;
  
  	nla_nest_end(msg, nl_caps);
  
  	return 0;
  }

  static int nl802154_send_wpan_phy(struct cfg802154_registered_device *rdev,
  				  enum nl802154_commands cmd,
  				  struct sk_buff *msg, u32 portid, u32 seq,
  				  int flags)
  {

  	struct nlattr *nl_cmds;

  	void *hdr;

  	int i;

  
  	hdr = nl802154hdr_put(msg, portid, seq, flags, cmd);
  	if (!hdr)
  		return -ENOBUFS;
  
  	if (nla_put_u32(msg, NL802154_ATTR_WPAN_PHY, rdev->wpan_phy_idx) ||
  	    nla_put_string(msg, NL802154_ATTR_WPAN_PHY_NAME,
  			   wpan_phy_name(&rdev->wpan_phy)) ||
  	    nla_put_u32(msg, NL802154_ATTR_GENERATION,
  			cfg802154_rdev_list_generation))
  		goto nla_put_failure;
  
  	if (cmd != NL802154_CMD_NEW_WPAN_PHY)
  		goto finish;
  
  	/* DUMP PHY PIB */
  
  	/* current channel settings */
  	if (nla_put_u8(msg, NL802154_ATTR_PAGE,
  		       rdev->wpan_phy.current_page) ||
  	    nla_put_u8(msg, NL802154_ATTR_CHANNEL,
  		       rdev->wpan_phy.current_channel))
  		goto nla_put_failure;

  	/* TODO remove this behaviour, we still keep support it for a while
  	 * so users can change the behaviour to the new one.
  	 */

  	if (nl802154_send_wpan_phy_channels(rdev, msg))
  		goto nla_put_failure;
  
  	/* cca mode */

  	if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_MODE) {
  		if (nla_put_u32(msg, NL802154_ATTR_CCA_MODE,
  				rdev->wpan_phy.cca.mode))

  			goto nla_put_failure;

  
  		if (rdev->wpan_phy.cca.mode == NL802154_CCA_ENERGY_CARRIER) {
  			if (nla_put_u32(msg, NL802154_ATTR_CCA_OPT,
  					rdev->wpan_phy.cca.opt))
  				goto nla_put_failure;
  		}

  	}

  	if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_TXPOWER) {
  		if (nla_put_s32(msg, NL802154_ATTR_TX_POWER,
  				rdev->wpan_phy.transmit_power))
  			goto nla_put_failure;
  	}

  	if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_ED_LEVEL) {
  		if (nla_put_s32(msg, NL802154_ATTR_CCA_ED_LEVEL,
  				rdev->wpan_phy.cca_ed_level))
  			goto nla_put_failure;
  	}

  	if (nl802154_put_capabilities(msg, rdev))
  		goto nla_put_failure;

  	nl_cmds = nla_nest_start(msg, NL802154_ATTR_SUPPORTED_COMMANDS);
  	if (!nl_cmds)
  		goto nla_put_failure;
  
  	i = 0;
  #define CMD(op, n)							\
  	do {								\
  		if (rdev->ops->op) {					\
  			i++;						\
  			if (nla_put_u32(msg, i, NL802154_CMD_ ## n))	\
  				goto nla_put_failure;			\
  		}							\
  	} while (0)
  
  	CMD(add_virtual_intf, NEW_INTERFACE);
  	CMD(del_virtual_intf, DEL_INTERFACE);
  	CMD(set_channel, SET_CHANNEL);
  	CMD(set_pan_id, SET_PAN_ID);
  	CMD(set_short_addr, SET_SHORT_ADDR);
  	CMD(set_backoff_exponent, SET_BACKOFF_EXPONENT);
  	CMD(set_max_csma_backoffs, SET_MAX_CSMA_BACKOFFS);
  	CMD(set_max_frame_retries, SET_MAX_FRAME_RETRIES);
  	CMD(set_lbt_mode, SET_LBT_MODE);

  	CMD(set_ackreq_default, SET_ACKREQ_DEFAULT);

  
  	if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_TXPOWER)
  		CMD(set_tx_power, SET_TX_POWER);
  
  	if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_ED_LEVEL)
  		CMD(set_cca_ed_level, SET_CCA_ED_LEVEL);
  
  	if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_MODE)
  		CMD(set_cca_mode, SET_CCA_MODE);
  
  #undef CMD
  	nla_nest_end(msg, nl_cmds);

  finish:

  	genlmsg_end(msg, hdr);
  	return 0;

  
  nla_put_failure:
  	genlmsg_cancel(msg, hdr);
  	return -EMSGSIZE;
  }
  
  struct nl802154_dump_wpan_phy_state {
  	s64 filter_wpan_phy;
  	long start;
  
  };
  
  static int nl802154_dump_wpan_phy_parse(struct sk_buff *skb,
  					struct netlink_callback *cb,
  					struct nl802154_dump_wpan_phy_state *state)
  {

  	struct nlattr **tb = genl_family_attrbuf(&nl802154_fam);

  	int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl802154_fam.hdrsize, tb,
  			      nl802154_fam.maxattr, nl802154_policy, NULL);

  
  	/* TODO check if we can handle error here,
  	 * we have no backward compatibility
  	 */
  	if (ret)
  		return 0;
  
  	if (tb[NL802154_ATTR_WPAN_PHY])
  		state->filter_wpan_phy = nla_get_u32(tb[NL802154_ATTR_WPAN_PHY]);
  	if (tb[NL802154_ATTR_WPAN_DEV])
  		state->filter_wpan_phy = nla_get_u64(tb[NL802154_ATTR_WPAN_DEV]) >> 32;
  	if (tb[NL802154_ATTR_IFINDEX]) {
  		struct net_device *netdev;
  		struct cfg802154_registered_device *rdev;
  		int ifidx = nla_get_u32(tb[NL802154_ATTR_IFINDEX]);

  		netdev = __dev_get_by_index(&init_net, ifidx);
  		if (!netdev)
  			return -ENODEV;
  		if (netdev->ieee802154_ptr) {
  			rdev = wpan_phy_to_rdev(
  					netdev->ieee802154_ptr->wpan_phy);
  			state->filter_wpan_phy = rdev->wpan_phy_idx;
  		}
  	}
  
  	return 0;
  }
  
  static int
  nl802154_dump_wpan_phy(struct sk_buff *skb, struct netlink_callback *cb)
  {
  	int idx = 0, ret;
  	struct nl802154_dump_wpan_phy_state *state = (void *)cb->args[0];
  	struct cfg802154_registered_device *rdev;
  
  	rtnl_lock();
  	if (!state) {
  		state = kzalloc(sizeof(*state), GFP_KERNEL);
  		if (!state) {
  			rtnl_unlock();
  			return -ENOMEM;
  		}
  		state->filter_wpan_phy = -1;
  		ret = nl802154_dump_wpan_phy_parse(skb, cb, state);
  		if (ret) {
  			kfree(state);
  			rtnl_unlock();
  			return ret;
  		}
  		cb->args[0] = (long)state;
  	}
  
  	list_for_each_entry(rdev, &cfg802154_rdev_list, list) {

  		if (!net_eq(wpan_phy_net(&rdev->wpan_phy), sock_net(skb->sk)))
  			continue;

  		if (++idx <= state->start)
  			continue;
  		if (state->filter_wpan_phy != -1 &&
  		    state->filter_wpan_phy != rdev->wpan_phy_idx)
  			continue;
  		/* attempt to fit multiple wpan_phy data chunks into the skb */
  		ret = nl802154_send_wpan_phy(rdev,
  					     NL802154_CMD_NEW_WPAN_PHY,
  					     skb,
  					     NETLINK_CB(cb->skb).portid,
  					     cb->nlh->nlmsg_seq, NLM_F_MULTI);
  		if (ret < 0) {
  			if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
  			    !skb->len && cb->min_dump_alloc < 4096) {
  				cb->min_dump_alloc = 4096;
  				rtnl_unlock();
  				return 1;
  			}
  			idx--;
  			break;
  		}
  		break;
  	}
  	rtnl_unlock();
  
  	state->start = idx;
  
  	return skb->len;
  }
  
  static int nl802154_dump_wpan_phy_done(struct netlink_callback *cb)
  {
  	kfree((void *)cb->args[0]);
  	return 0;
  }
  
  static int nl802154_get_wpan_phy(struct sk_buff *skb, struct genl_info *info)
  {
  	struct sk_buff *msg;
  	struct cfg802154_registered_device *rdev = info->user_ptr[0];
  
  	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
  	if (!msg)
  		return -ENOMEM;
  
  	if (nl802154_send_wpan_phy(rdev, NL802154_CMD_NEW_WPAN_PHY, msg,
  				   info->snd_portid, info->snd_seq, 0) < 0) {
  		nlmsg_free(msg);
  		return -ENOBUFS;
  	}
  
  	return genlmsg_reply(msg, info);
  }

  static inline u64 wpan_dev_id(struct wpan_dev *wpan_dev)
  {
  	return (u64)wpan_dev->identifier |
  	       ((u64)wpan_phy_to_rdev(wpan_dev->wpan_phy)->wpan_phy_idx << 32);
  }

  #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
  #include <net/ieee802154_netdev.h>
  
  static int
  ieee802154_llsec_send_key_id(struct sk_buff *msg,
  			     const struct ieee802154_llsec_key_id *desc)
  {
  	struct nlattr *nl_dev_addr;
  
  	if (nla_put_u32(msg, NL802154_KEY_ID_ATTR_MODE, desc->mode))
  		return -ENOBUFS;
  
  	switch (desc->mode) {
  	case NL802154_KEY_ID_MODE_IMPLICIT:
  		nl_dev_addr = nla_nest_start(msg, NL802154_KEY_ID_ATTR_IMPLICIT);
  		if (!nl_dev_addr)
  			return -ENOBUFS;
  
  		if (nla_put_le16(msg, NL802154_DEV_ADDR_ATTR_PAN_ID,
  				 desc->device_addr.pan_id) ||
  		    nla_put_u32(msg,  NL802154_DEV_ADDR_ATTR_MODE,
  				desc->device_addr.mode))
  			return -ENOBUFS;
  
  		switch (desc->device_addr.mode) {
  		case NL802154_DEV_ADDR_SHORT:
  			if (nla_put_le16(msg, NL802154_DEV_ADDR_ATTR_SHORT,
  					 desc->device_addr.short_addr))
  				return -ENOBUFS;
  			break;
  		case NL802154_DEV_ADDR_EXTENDED:
  			if (nla_put_le64(msg, NL802154_DEV_ADDR_ATTR_EXTENDED,

  					 desc->device_addr.extended_addr,
  					 NL802154_DEV_ADDR_ATTR_PAD))

  				return -ENOBUFS;
  			break;
  		default:
  			/* userspace should handle unknown */
  			break;
  		}
  
  		nla_nest_end(msg, nl_dev_addr);
  		break;
  	case NL802154_KEY_ID_MODE_INDEX:
  		break;
  	case NL802154_KEY_ID_MODE_INDEX_SHORT:
  		/* TODO renmae short_source? */
  		if (nla_put_le32(msg, NL802154_KEY_ID_ATTR_SOURCE_SHORT,
  				 desc->short_source))
  			return -ENOBUFS;
  		break;
  	case NL802154_KEY_ID_MODE_INDEX_EXTENDED:
  		if (nla_put_le64(msg, NL802154_KEY_ID_ATTR_SOURCE_EXTENDED,

  				 desc->extended_source,
  				 NL802154_KEY_ID_ATTR_PAD))

  			return -ENOBUFS;
  		break;
  	default:
  		/* userspace should handle unknown */
  		break;
  	}
  
  	/* TODO key_id to key_idx ? Check naming */
  	if (desc->mode != NL802154_KEY_ID_MODE_IMPLICIT) {
  		if (nla_put_u8(msg, NL802154_KEY_ID_ATTR_INDEX, desc->id))
  			return -ENOBUFS;
  	}
  
  	return 0;
  }
  
  static int nl802154_get_llsec_params(struct sk_buff *msg,
  				     struct cfg802154_registered_device *rdev,
  				     struct wpan_dev *wpan_dev)
  {
  	struct nlattr *nl_key_id;
  	struct ieee802154_llsec_params params;
  	int ret;
  
  	ret = rdev_get_llsec_params(rdev, wpan_dev, &params);
  	if (ret < 0)
  		return ret;
  
  	if (nla_put_u8(msg, NL802154_ATTR_SEC_ENABLED, params.enabled) ||
  	    nla_put_u32(msg, NL802154_ATTR_SEC_OUT_LEVEL, params.out_level) ||
  	    nla_put_be32(msg, NL802154_ATTR_SEC_FRAME_COUNTER,
  			 params.frame_counter))
  		return -ENOBUFS;
  
  	nl_key_id = nla_nest_start(msg, NL802154_ATTR_SEC_OUT_KEY_ID);
  	if (!nl_key_id)
  		return -ENOBUFS;
  
  	ret = ieee802154_llsec_send_key_id(msg, &params.out_key);
  	if (ret < 0)
  		return ret;
  
  	nla_nest_end(msg, nl_key_id);
  
  	return 0;
  }
  #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */

  static int
  nl802154_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
  		    struct cfg802154_registered_device *rdev,
  		    struct wpan_dev *wpan_dev)
  {
  	struct net_device *dev = wpan_dev->netdev;
  	void *hdr;
  
  	hdr = nl802154hdr_put(msg, portid, seq, flags,
  			      NL802154_CMD_NEW_INTERFACE);
  	if (!hdr)
  		return -1;
  
  	if (dev &&
  	    (nla_put_u32(msg, NL802154_ATTR_IFINDEX, dev->ifindex) ||
  	     nla_put_string(msg, NL802154_ATTR_IFNAME, dev->name)))
  		goto nla_put_failure;
  
  	if (nla_put_u32(msg, NL802154_ATTR_WPAN_PHY, rdev->wpan_phy_idx) ||
  	    nla_put_u32(msg, NL802154_ATTR_IFTYPE, wpan_dev->iftype) ||

  	    nla_put_u64_64bit(msg, NL802154_ATTR_WPAN_DEV,
  			      wpan_dev_id(wpan_dev), NL802154_ATTR_PAD) ||

  	    nla_put_u32(msg, NL802154_ATTR_GENERATION,
  			rdev->devlist_generation ^
  			(cfg802154_rdev_list_generation << 2)))
  		goto nla_put_failure;
  
  	/* address settings */
  	if (nla_put_le64(msg, NL802154_ATTR_EXTENDED_ADDR,

  			 wpan_dev->extended_addr,
  			 NL802154_ATTR_PAD) ||

  	    nla_put_le16(msg, NL802154_ATTR_SHORT_ADDR,
  			 wpan_dev->short_addr) ||
  	    nla_put_le16(msg, NL802154_ATTR_PAN_ID, wpan_dev->pan_id))
  		goto nla_put_failure;
  
  	/* ARET handling */
  	if (nla_put_s8(msg, NL802154_ATTR_MAX_FRAME_RETRIES,
  		       wpan_dev->frame_retries) ||
  	    nla_put_u8(msg, NL802154_ATTR_MAX_BE, wpan_dev->max_be) ||
  	    nla_put_u8(msg, NL802154_ATTR_MAX_CSMA_BACKOFFS,
  		       wpan_dev->csma_retries) ||
  	    nla_put_u8(msg, NL802154_ATTR_MIN_BE, wpan_dev->min_be))
  		goto nla_put_failure;
  
  	/* listen before transmit */
  	if (nla_put_u8(msg, NL802154_ATTR_LBT_MODE, wpan_dev->lbt))
  		goto nla_put_failure;

  	/* ackreq default behaviour */
  	if (nla_put_u8(msg, NL802154_ATTR_ACKREQ_DEFAULT, wpan_dev->ackreq))
  		goto nla_put_failure;

  #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
  	if (nl802154_get_llsec_params(msg, rdev, wpan_dev) < 0)
  		goto nla_put_failure;
  #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */

  	genlmsg_end(msg, hdr);
  	return 0;

  
  nla_put_failure:
  	genlmsg_cancel(msg, hdr);
  	return -EMSGSIZE;
  }
  
  static int
  nl802154_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
  {
  	int wp_idx = 0;
  	int if_idx = 0;
  	int wp_start = cb->args[0];
  	int if_start = cb->args[1];
  	struct cfg802154_registered_device *rdev;
  	struct wpan_dev *wpan_dev;
  
  	rtnl_lock();
  	list_for_each_entry(rdev, &cfg802154_rdev_list, list) {

  		if (!net_eq(wpan_phy_net(&rdev->wpan_phy), sock_net(skb->sk)))
  			continue;

  		if (wp_idx < wp_start) {
  			wp_idx++;
  			continue;
  		}
  		if_idx = 0;
  
  		list_for_each_entry(wpan_dev, &rdev->wpan_dev_list, list) {
  			if (if_idx < if_start) {
  				if_idx++;
  				continue;
  			}
  			if (nl802154_send_iface(skb, NETLINK_CB(cb->skb).portid,
  						cb->nlh->nlmsg_seq, NLM_F_MULTI,
  						rdev, wpan_dev) < 0) {
  				goto out;
  			}
  			if_idx++;
  		}
  
  		wp_idx++;
  	}
  out:
  	rtnl_unlock();
  
  	cb->args[0] = wp_idx;
  	cb->args[1] = if_idx;
  
  	return skb->len;
  }
  
  static int nl802154_get_interface(struct sk_buff *skb, struct genl_info *info)
  {
  	struct sk_buff *msg;
  	struct cfg802154_registered_device *rdev = info->user_ptr[0];
  	struct wpan_dev *wdev = info->user_ptr[1];
  
  	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
  	if (!msg)
  		return -ENOMEM;
  
  	if (nl802154_send_iface(msg, info->snd_portid, info->snd_seq, 0,
  				rdev, wdev) < 0) {
  		nlmsg_free(msg);
  		return -ENOBUFS;
  	}
  
  	return genlmsg_reply(msg, info);
  }

  static int nl802154_new_interface(struct sk_buff *skb, struct genl_info *info)
  {
  	struct cfg802154_registered_device *rdev = info->user_ptr[0];
  	enum nl802154_iftype type = NL802154_IFTYPE_UNSPEC;

  	__le64 extended_addr = cpu_to_le64(0x0000000000000000ULL);

  
  	/* TODO avoid failing a new interface
  	 * creation due to pending removal?
  	 */
  
  	if (!info->attrs[NL802154_ATTR_IFNAME])
  		return -EINVAL;
  
  	if (info->attrs[NL802154_ATTR_IFTYPE]) {
  		type = nla_get_u32(info->attrs[NL802154_ATTR_IFTYPE]);

  		if (type > NL802154_IFTYPE_MAX ||
  		    !(rdev->wpan_phy.supported.iftypes & BIT(type)))

  			return -EINVAL;
  	}

  	if (info->attrs[NL802154_ATTR_EXTENDED_ADDR])

  		extended_addr = nla_get_le64(info->attrs[NL802154_ATTR_EXTENDED_ADDR]);

  	if (!rdev->ops->add_virtual_intf)
  		return -EOPNOTSUPP;
  
  	return rdev_add_virtual_intf(rdev,
  				     nla_data(info->attrs[NL802154_ATTR_IFNAME]),

  				     NET_NAME_USER, type, extended_addr);

  }

  static int nl802154_del_interface(struct sk_buff *skb, struct genl_info *info)
  {
  	struct cfg802154_registered_device *rdev = info->user_ptr[0];
  	struct wpan_dev *wpan_dev = info->user_ptr[1];
  
  	if (!rdev->ops->del_virtual_intf)
  		return -EOPNOTSUPP;
  
  	/* If we remove a wpan device without a netdev then clear
  	 * user_ptr[1] so that nl802154_post_doit won't dereference it
  	 * to check if it needs to do dev_put(). Otherwise it crashes
  	 * since the wpan_dev has been freed, unlike with a netdev where
  	 * we need the dev_put() for the netdev to really be freed.
  	 */
  	if (!wpan_dev->netdev)
  		info->user_ptr[1] = NULL;
  
  	return rdev_del_virtual_intf(rdev, wpan_dev);
  }

  static int nl802154_set_channel(struct sk_buff *skb, struct genl_info *info)
  {
  	struct cfg802154_registered_device *rdev = info->user_ptr[0];
  	u8 channel, page;
  
  	if (!info->attrs[NL802154_ATTR_PAGE] ||
  	    !info->attrs[NL802154_ATTR_CHANNEL])
  		return -EINVAL;
  
  	page = nla_get_u8(info->attrs[NL802154_ATTR_PAGE]);
  	channel = nla_get_u8(info->attrs[NL802154_ATTR_CHANNEL]);
  
  	/* check 802.15.4 constraints */

  	if (page > IEEE802154_MAX_PAGE || channel > IEEE802154_MAX_CHANNEL ||

  	    !(rdev->wpan_phy.supported.channels[page] & BIT(channel)))

  		return -EINVAL;
  
  	return rdev_set_channel(rdev, page, channel);
  }

  static int nl802154_set_cca_mode(struct sk_buff *skb, struct genl_info *info)
  {
  	struct cfg802154_registered_device *rdev = info->user_ptr[0];
  	struct wpan_phy_cca cca;

  	if (!(rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_MODE))

  		return -EOPNOTSUPP;

  	if (!info->attrs[NL802154_ATTR_CCA_MODE])
  		return -EINVAL;
  
  	cca.mode = nla_get_u32(info->attrs[NL802154_ATTR_CCA_MODE]);
  	/* checking 802.15.4 constraints */

  	if (cca.mode < NL802154_CCA_ENERGY ||
  	    cca.mode > NL802154_CCA_ATTR_MAX ||
  	    !(rdev->wpan_phy.supported.cca_modes & BIT(cca.mode)))

  		return -EINVAL;
  
  	if (cca.mode == NL802154_CCA_ENERGY_CARRIER) {
  		if (!info->attrs[NL802154_ATTR_CCA_OPT])
  			return -EINVAL;
  
  		cca.opt = nla_get_u32(info->attrs[NL802154_ATTR_CCA_OPT]);

  		if (cca.opt > NL802154_CCA_OPT_ATTR_MAX ||
  		    !(rdev->wpan_phy.supported.cca_opts & BIT(cca.opt)))

  			return -EINVAL;
  	}
  
  	return rdev_set_cca_mode(rdev, &cca);
  }

  static int nl802154_set_cca_ed_level(struct sk_buff *skb, struct genl_info *info)
  {
  	struct cfg802154_registered_device *rdev = info->user_ptr[0];
  	s32 ed_level;
  	int i;
  
  	if (!(rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_ED_LEVEL))
  		return -EOPNOTSUPP;
  
  	if (!info->attrs[NL802154_ATTR_CCA_ED_LEVEL])
  		return -EINVAL;
  
  	ed_level = nla_get_s32(info->attrs[NL802154_ATTR_CCA_ED_LEVEL]);
  
  	for (i = 0; i < rdev->wpan_phy.supported.cca_ed_levels_size; i++) {
  		if (ed_level == rdev->wpan_phy.supported.cca_ed_levels[i])
  			return rdev_set_cca_ed_level(rdev, ed_level);
  	}
  
  	return -EINVAL;
  }

  static int nl802154_set_tx_power(struct sk_buff *skb, struct genl_info *info)
  {
  	struct cfg802154_registered_device *rdev = info->user_ptr[0];
  	s32 power;
  	int i;
  
  	if (!(rdev->wpan_phy.flags & WPAN_PHY_FLAG_TXPOWER))
  		return -EOPNOTSUPP;
  
  	if (!info->attrs[NL802154_ATTR_TX_POWER])
  		return -EINVAL;
  
  	power = nla_get_s32(info->attrs[NL802154_ATTR_TX_POWER]);
  
  	for (i = 0; i < rdev->wpan_phy.supported.tx_powers_size; i++) {
  		if (power == rdev->wpan_phy.supported.tx_powers[i])
  			return rdev_set_tx_power(rdev, power);
  	}
  
  	return -EINVAL;
  }

  static int nl802154_set_pan_id(struct sk_buff *skb, struct genl_info *info)
  {
  	struct cfg802154_registered_device *rdev = info->user_ptr[0];
  	struct net_device *dev = info->user_ptr[1];
  	struct wpan_dev *wpan_dev = dev->ieee802154_ptr;

  	__le16 pan_id;

  
  	/* conflict here while tx/rx calls */
  	if (netif_running(dev))
  		return -EBUSY;

  	if (wpan_dev->lowpan_dev) {
  		if (netif_running(wpan_dev->lowpan_dev))
  			return -EBUSY;
  	}

  	/* don't change address fields on monitor */

  	if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR ||
  	    !info->attrs[NL802154_ATTR_PAN_ID])

  		return -EINVAL;

  	pan_id = nla_get_le16(info->attrs[NL802154_ATTR_PAN_ID]);

  	/* TODO
  	 * I am not sure about to check here on broadcast pan_id.
  	 * Broadcast is a valid setting, comment from 802.15.4:
  	 * If this value is 0xffff, the device is not associated.
  	 *
  	 * This could useful to simple deassociate an device.
  	 */
  	if (pan_id == cpu_to_le16(IEEE802154_PAN_ID_BROADCAST))
  		return -EINVAL;

  	return rdev_set_pan_id(rdev, wpan_dev, pan_id);
  }

  static int nl802154_set_short_addr(struct sk_buff *skb, struct genl_info *info)
  {
  	struct cfg802154_registered_device *rdev = info->user_ptr[0];
  	struct net_device *dev = info->user_ptr[1];
  	struct wpan_dev *wpan_dev = dev->ieee802154_ptr;

  	__le16 short_addr;

  
  	/* conflict here while tx/rx calls */
  	if (netif_running(dev))
  		return -EBUSY;

  	if (wpan_dev->lowpan_dev) {
  		if (netif_running(wpan_dev->lowpan_dev))
  			return -EBUSY;
  	}

  	/* don't change address fields on monitor */

  	if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR ||
  	    !info->attrs[NL802154_ATTR_SHORT_ADDR])

  		return -EINVAL;

  	short_addr = nla_get_le16(info->attrs[NL802154_ATTR_SHORT_ADDR]);

  	/* TODO
  	 * I am not sure about to check here on broadcast short_addr.
  	 * Broadcast is a valid setting, comment from 802.15.4:
  	 * A value of 0xfffe indicates that the device has
  	 * associated but has not been allocated an address. A
  	 * value of 0xffff indicates that the device does not
  	 * have a short address.
  	 *
  	 * I think we should allow to set these settings but
  	 * don't allow to allow socket communication with it.
  	 */
  	if (short_addr == cpu_to_le16(IEEE802154_ADDR_SHORT_UNSPEC) ||
  	    short_addr == cpu_to_le16(IEEE802154_ADDR_SHORT_BROADCAST))
  		return -EINVAL;

  	return rdev_set_short_addr(rdev, wpan_dev, short_addr);
  }

  static int
  nl802154_set_backoff_exponent(struct sk_buff *skb, struct genl_info *info)
  {
  	struct cfg802154_registered_device *rdev = info->user_ptr[0];
  	struct net_device *dev = info->user_ptr[1];
  	struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
  	u8 min_be, max_be;
  
  	/* should be set on netif open inside phy settings */
  	if (netif_running(dev))
  		return -EBUSY;
  
  	if (!info->attrs[NL802154_ATTR_MIN_BE] ||
  	    !info->attrs[NL802154_ATTR_MAX_BE])
  		return -EINVAL;
  
  	min_be = nla_get_u8(info->attrs[NL802154_ATTR_MIN_BE]);
  	max_be = nla_get_u8(info->attrs[NL802154_ATTR_MAX_BE]);
  
  	/* check 802.15.4 constraints */

  	if (min_be < rdev->wpan_phy.supported.min_minbe ||
  	    min_be > rdev->wpan_phy.supported.max_minbe ||
  	    max_be < rdev->wpan_phy.supported.min_maxbe ||
  	    max_be > rdev->wpan_phy.supported.max_maxbe ||
  	    min_be > max_be)

  		return -EINVAL;
  
  	return rdev_set_backoff_exponent(rdev, wpan_dev, min_be, max_be);
  }

  static int
  nl802154_set_max_csma_backoffs(struct sk_buff *skb, struct genl_info *info)
  {
  	struct cfg802154_registered_device *rdev = info->user_ptr[0];
  	struct net_device *dev = info->user_ptr[1];
  	struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
  	u8 max_csma_backoffs;
  
  	/* conflict here while other running iface settings */
  	if (netif_running(dev))
  		return -EBUSY;
  
  	if (!info->attrs[NL802154_ATTR_MAX_CSMA_BACKOFFS])
  		return -EINVAL;
  
  	max_csma_backoffs = nla_get_u8(
  			info->attrs[NL802154_ATTR_MAX_CSMA_BACKOFFS]);
  
  	/* check 802.15.4 constraints */

  	if (max_csma_backoffs < rdev->wpan_phy.supported.min_csma_backoffs ||
  	    max_csma_backoffs > rdev->wpan_phy.supported.max_csma_backoffs)

  		return -EINVAL;
  
  	return rdev_set_max_csma_backoffs(rdev, wpan_dev, max_csma_backoffs);
  }

  static int
  nl802154_set_max_frame_retries(struct sk_buff *skb, struct genl_info *info)
  {
  	struct cfg802154_registered_device *rdev = info->user_ptr[0];
  	struct net_device *dev = info->user_ptr[1];
  	struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
  	s8 max_frame_retries;
  
  	if (netif_running(dev))
  		return -EBUSY;
  
  	if (!info->attrs[NL802154_ATTR_MAX_FRAME_RETRIES])
  		return -EINVAL;
  
  	max_frame_retries = nla_get_s8(
  			info->attrs[NL802154_ATTR_MAX_FRAME_RETRIES]);
  
  	/* check 802.15.4 constraints */

  	if (max_frame_retries < rdev->wpan_phy.supported.min_frame_retries ||
  	    max_frame_retries > rdev->wpan_phy.supported.max_frame_retries)

  		return -EINVAL;
  
  	return rdev_set_max_frame_retries(rdev, wpan_dev, max_frame_retries);
  }

  static int nl802154_set_lbt_mode(struct sk_buff *skb, struct genl_info *info)
  {
  	struct cfg802154_registered_device *rdev = info->user_ptr[0];
  	struct net_device *dev = info->user_ptr[1];
  	struct wpan_dev *wpan_dev = dev->ieee802154_ptr;

  	int mode;

  
  	if (netif_running(dev))
  		return -EBUSY;
  
  	if (!info->attrs[NL802154_ATTR_LBT_MODE])
  		return -EINVAL;

  	mode = nla_get_u8(info->attrs[NL802154_ATTR_LBT_MODE]);
  
  	if (mode != 0 && mode != 1)
  		return -EINVAL;

  	if (!wpan_phy_supported_bool(mode, rdev->wpan_phy.supported.lbt))
  		return -EINVAL;

  	return rdev_set_lbt_mode(rdev, wpan_dev, mode);
  }

  static int
  nl802154_set_ackreq_default(struct sk_buff *skb, struct genl_info *info)
  {
  	struct cfg802154_registered_device *rdev = info->user_ptr[0];
  	struct net_device *dev = info->user_ptr[1];
  	struct wpan_dev *wpan_dev = dev->ieee802154_ptr;

  	int ackreq;

  
  	if (netif_running(dev))
  		return -EBUSY;
  
  	if (!info->attrs[NL802154_ATTR_ACKREQ_DEFAULT])
  		return -EINVAL;

  	ackreq = nla_get_u8(info->attrs[NL802154_ATTR_ACKREQ_DEFAULT]);
  
  	if (ackreq != 0 && ackreq != 1)
  		return -EINVAL;

  	return rdev_set_ackreq_default(rdev, wpan_dev, ackreq);
  }

  static int nl802154_wpan_phy_netns(struct sk_buff *skb, struct genl_info *info)
  {
  	struct cfg802154_registered_device *rdev = info->user_ptr[0];
  	struct net *net;
  	int err;
  
  	if (info->attrs[NL802154_ATTR_PID]) {
  		u32 pid = nla_get_u32(info->attrs[NL802154_ATTR_PID]);
  
  		net = get_net_ns_by_pid(pid);
  	} else if (info->attrs[NL802154_ATTR_NETNS_FD]) {
  		u32 fd = nla_get_u32(info->attrs[NL802154_ATTR_NETNS_FD]);
  
  		net = get_net_ns_by_fd(fd);
  	} else {
  		return -EINVAL;
  	}
  
  	if (IS_ERR(net))
  		return PTR_ERR(net);
  
  	err = 0;
  
  	/* check if anything to do */
  	if (!net_eq(wpan_phy_net(&rdev->wpan_phy), net))
  		err = cfg802154_switch_netns(rdev, net);
  
  	put_net(net);
  	return err;
  }

  #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
  static const struct nla_policy nl802154_dev_addr_policy[NL802154_DEV_ADDR_ATTR_MAX + 1] = {
  	[NL802154_DEV_ADDR_ATTR_PAN_ID] = { .type = NLA_U16 },
  	[NL802154_DEV_ADDR_ATTR_MODE] = { .type = NLA_U32 },
  	[NL802154_DEV_ADDR_ATTR_SHORT] = { .type = NLA_U16 },
  	[NL802154_DEV_ADDR_ATTR_EXTENDED] = { .type = NLA_U64 },
  };

  static int
  ieee802154_llsec_parse_dev_addr(struct nlattr *nla,
  				struct ieee802154_addr *addr)

  {

  	struct nlattr *attrs[NL802154_DEV_ADDR_ATTR_MAX + 1];

  	if (!nla || nla_parse_nested(attrs, NL802154_DEV_ADDR_ATTR_MAX, nla,

  				     nl802154_dev_addr_policy, NULL))

  		return -EINVAL;

  	if (!attrs[NL802154_DEV_ADDR_ATTR_PAN_ID] ||
  	    !attrs[NL802154_DEV_ADDR_ATTR_MODE] ||

  	    !(attrs[NL802154_DEV_ADDR_ATTR_SHORT] ||
  	      attrs[NL802154_DEV_ADDR_ATTR_EXTENDED]))
  		return -EINVAL;

  	addr->pan_id = nla_get_le16(attrs[NL802154_DEV_ADDR_ATTR_PAN_ID]);
  	addr->mode = nla_get_u32(attrs[NL802154_DEV_ADDR_ATTR_MODE]);
  	switch (addr->mode) {
  	case NL802154_DEV_ADDR_SHORT:
  		addr->short_addr = nla_get_le16(attrs[NL802154_DEV_ADDR_ATTR_SHORT]);
  		break;
  	case NL802154_DEV_ADDR_EXTENDED:
  		addr->extended_addr = nla_get_le64(attrs[NL802154_DEV_ADDR_ATTR_EXTENDED]);
  		break;
  	default:
  		return -EINVAL;
  	}

  	return 0;
  }

  static const struct nla_policy nl802154_key_id_policy[NL802154_KEY_ID_ATTR_MAX + 1] = {
  	[NL802154_KEY_ID_ATTR_MODE] = { .type = NLA_U32 },
  	[NL802154_KEY_ID_ATTR_INDEX] = { .type = NLA_U8 },
  	[NL802154_KEY_ID_ATTR_IMPLICIT] = { .type = NLA_NESTED },
  	[NL802154_KEY_ID_ATTR_SOURCE_SHORT] = { .type = NLA_U32 },
  	[NL802154_KEY_ID_ATTR_SOURCE_EXTENDED] = { .type = NLA_U64 },
  };

  static int
  ieee802154_llsec_parse_key_id(struct nlattr *nla,
  			      struct ieee802154_llsec_key_id *desc)
  {
  	struct nlattr *attrs[NL802154_KEY_ID_ATTR_MAX + 1];

  	if (!nla || nla_parse_nested(attrs, NL802154_KEY_ID_ATTR_MAX, nla,

  				     nl802154_key_id_policy, NULL))

  		return -EINVAL;

  	if (!attrs[NL802154_KEY_ID_ATTR_MODE])
  		return -EINVAL;
  
  	desc->mode = nla_get_u32(attrs[NL802154_KEY_ID_ATTR_MODE]);
  	switch (desc->mode) {
  	case NL802154_KEY_ID_MODE_IMPLICIT:
  		if (!attrs[NL802154_KEY_ID_ATTR_IMPLICIT])
  			return -EINVAL;
  
  		if (ieee802154_llsec_parse_dev_addr(attrs[NL802154_KEY_ID_ATTR_IMPLICIT],
  						    &desc->device_addr) < 0)
  			return -EINVAL;
  		break;
  	case NL802154_KEY_ID_MODE_INDEX:
  		break;
  	case NL802154_KEY_ID_MODE_INDEX_SHORT:
  		if (!attrs[NL802154_KEY_ID_ATTR_SOURCE_SHORT])
  			return -EINVAL;
  
  		desc->short_source = nla_get_le32(attrs[NL802154_KEY_ID_ATTR_SOURCE_SHORT]);
  		break;
  	case NL802154_KEY_ID_MODE_INDEX_EXTENDED:
  		if (!attrs[NL802154_KEY_ID_ATTR_SOURCE_EXTENDED])
  			return -EINVAL;
  
  		desc->extended_source = nla_get_le64(attrs[NL802154_KEY_ID_ATTR_SOURCE_EXTENDED]);
  		break;
  	default:
  		return -EINVAL;
  	}
  
  	if (desc->mode != NL802154_KEY_ID_MODE_IMPLICIT) {
  		if (!attrs[NL802154_KEY_ID_ATTR_INDEX])
  			return -EINVAL;
  
  		/* TODO change id to idx */
  		desc->id = nla_get_u8(attrs[NL802154_KEY_ID_ATTR_INDEX]);

  	}
  
  	return 0;
  }

  static int nl802154_set_llsec_params(struct sk_buff *skb,
  				     struct genl_info *info)

  {

  	struct cfg802154_registered_device *rdev = info->user_ptr[0];
  	struct net_device *dev = info->user_ptr[1];
  	struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
  	struct ieee802154_llsec_params params;
  	u32 changed = 0;
  	int ret;

  	if (info->attrs[NL802154_ATTR_SEC_ENABLED]) {
  		u8 enabled;
  
  		enabled = nla_get_u8(info->attrs[NL802154_ATTR_SEC_ENABLED]);
  		if (enabled != 0 && enabled != 1)
  			return -EINVAL;
  
  		params.enabled = nla_get_u8(info->attrs[NL802154_ATTR_SEC_ENABLED]);
  		changed |= IEEE802154_LLSEC_PARAM_ENABLED;
  	}
  
  	if (info->attrs[NL802154_ATTR_SEC_OUT_KEY_ID]) {
  		ret = ieee802154_llsec_parse_key_id(info->attrs[NL802154_ATTR_SEC_OUT_KEY_ID],
  						    &params.out_key);
  		if (ret < 0)
  			return ret;
  
  		changed |= IEEE802154_LLSEC_PARAM_OUT_KEY;
  	}
  
  	if (info->attrs[NL802154_ATTR_SEC_OUT_LEVEL]) {
  		params.out_level = nla_get_u32(info->attrs[NL802154_ATTR_SEC_OUT_LEVEL]);
  		if (params.out_level > NL802154_SECLEVEL_MAX)
  			return -EINVAL;
  
  		changed |= IEEE802154_LLSEC_PARAM_OUT_LEVEL;
  	}
  
  	if (info->attrs[NL802154_ATTR_SEC_FRAME_COUNTER]) {
  		params.frame_counter = nla_get_be32(info->attrs[NL802154_ATTR_SEC_FRAME_COUNTER]);
  		changed |= IEEE802154_LLSEC_PARAM_FRAME_COUNTER;
  	}
  
  	return rdev_set_llsec_params(rdev, wpan_dev, &params, changed);
  }
  
  static int nl802154_send_key(struct sk_buff *msg, u32 cmd, u32 portid,
  			     u32 seq, int flags,
  			     struct cfg802154_registered_device *rdev,
  			     struct net_device *dev,
  			     const struct ieee802154_llsec_key_entry *key)
  {
  	void *hdr;
  	u32 commands[NL802154_CMD_FRAME_NR_IDS / 32];
  	struct nlattr *nl_key, *nl_key_id;
  
  	hdr = nl802154hdr_put(msg, portid, seq, flags, cmd);
  	if (!hdr)
  		return -1;
  
  	if (nla_put_u32(msg, NL802154_ATTR_IFINDEX, dev->ifindex))
  		goto nla_put_failure;
  
  	nl_key = nla_nest_start(msg, NL802154_ATTR_SEC_KEY);
  	if (!nl_key)
  		goto nla_put_failure;
  
  	nl_key_id = nla_nest_start(msg, NL802154_KEY_ATTR_ID);
  	if (!nl_key_id)
  		goto nla_put_failure;
  
  	if (ieee802154_llsec_send_key_id(msg, &key->id) < 0)
  		goto nla_put_failure;
  
  	nla_nest_end(msg, nl_key_id);
  
  	if (nla_put_u8(msg, NL802154_KEY_ATTR_USAGE_FRAMES,
  		       key->key->frame_types))
  		goto nla_put_failure;
  
  	if (key->key->frame_types & BIT(NL802154_FRAME_CMD)) {
  		/* TODO for each nested */
  		memset(commands, 0, sizeof(commands));
  		commands[7] = key->key->cmd_frame_ids;
  		if (nla_put(msg, NL802154_KEY_ATTR_USAGE_CMDS,
  			    sizeof(commands), commands))
  			goto nla_put_failure;
  	}
  
  	if (nla_put(msg, NL802154_KEY_ATTR_BYTES, NL802154_KEY_SIZE,
  		    key->key->key))
  		goto nla_put_failure;
  
  	nla_nest_end(msg, nl_key);
  	genlmsg_end(msg, hdr);
  
  	return 0;
  
  nla_put_failure:
  	genlmsg_cancel(msg, hdr);
  	return -EMSGSIZE;
  }
  
  static int
  nl802154_dump_llsec_key(struct sk_buff *skb, struct netlink_callback *cb)
  {
  	struct cfg802154_registered_device *rdev = NULL;
  	struct ieee802154_llsec_key_entry *key;
  	struct ieee802154_llsec_table *table;
  	struct wpan_dev *wpan_dev;
  	int err;
  
  	err = nl802154_prepare_wpan_dev_dump(skb, cb, &rdev, &wpan_dev);
  	if (err)
  		return err;
  
  	if (!wpan_dev->netdev) {
  		err = -EINVAL;
  		goto out_err;
  	}
  
  	rdev_lock_llsec_table(rdev, wpan_dev);
  	rdev_get_llsec_table(rdev, wpan_dev, &table);
  
  	/* TODO make it like station dump */
  	if (cb->args[2])
  		goto out;
  
  	list_for_each_entry(key, &table->keys, list) {
  		if (nl802154_send_key(skb, NL802154_CMD_NEW_SEC_KEY,
  				      NETLINK_CB(cb->skb).portid,
  				      cb->nlh->nlmsg_seq, NLM_F_MULTI,
  				      rdev, wpan_dev->netdev, key) < 0) {
  			/* TODO */
  			err = -EIO;
  			rdev_unlock_llsec_table(rdev, wpan_dev);
  			goto out_err;

  		}
  	}

  	cb->args[2] = 1;
  
  out:
  	rdev_unlock_llsec_table(rdev, wpan_dev);
  	err = skb->len;
  out_err:
  	nl802154_finish_wpan_dev_dump(rdev);
  
  	return err;

  }

  static const struct nla_policy nl802154_key_policy[NL802154_KEY_ATTR_MAX + 1] = {
  	[NL802154_KEY_ATTR_ID] = { NLA_NESTED },
  	/* TODO handle it as for_each_nested and NLA_FLAG? */
  	[NL802154_KEY_ATTR_USAGE_FRAMES] = { NLA_U8 },
  	/* TODO handle it as for_each_nested, not static array? */
  	[NL802154_KEY_ATTR_USAGE_CMDS] = { .len = NL802154_CMD_FRAME_NR_IDS / 8 },
  	[NL802154_KEY_ATTR_BYTES] = { .len = NL802154_KEY_SIZE },
  };
  
  static int nl802154_add_llsec_key(struct sk_buff *skb, struct genl_info *info)
  {
  	struct cfg802154_registered_device *rdev = info->user_ptr[0];
  	struct net_device *dev = info->user_ptr[1];
  	struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
  	struct nlattr *attrs[NL802154_KEY_ATTR_MAX + 1];
  	struct ieee802154_llsec_key key = { };
  	struct ieee802154_llsec_key_id id = { };
  	u32 commands[NL802154_CMD_FRAME_NR_IDS / 32] = { };
  
  	if (nla_parse_nested(attrs, NL802154_KEY_ATTR_MAX,
  			     info->attrs[NL802154_ATTR_SEC_KEY],

  			     nl802154_key_policy, info->extack))

  		return -EINVAL;
  
  	if (!attrs[NL802154_KEY_ATTR_USAGE_FRAMES] ||
  	    !attrs[NL802154_KEY_ATTR_BYTES])

  		return -EINVAL;

  
  	if (ieee802154_llsec_parse_key_id(attrs[NL802154_KEY_ATTR_ID], &id) < 0)
  		return -ENOBUFS;
  
  	key.frame_types = nla_get_u8(attrs[NL802154_KEY_ATTR_USAGE_FRAMES]);
  	if (key.frame_types > BIT(NL802154_FRAME_MAX) ||
  	    ((key.frame_types & BIT(NL802154_FRAME_CMD)) &&
  	     !attrs[NL802154_KEY_ATTR_USAGE_CMDS]))
  		return -EINVAL;
  
  	if (attrs[NL802154_KEY_ATTR_USAGE_CMDS]) {
  		/* TODO for each nested */
  		nla_memcpy(commands, attrs[NL802154_KEY_ATTR_USAGE_CMDS],
  			   NL802154_CMD_FRAME_NR_IDS / 8);
  
  		/* TODO understand the -EINVAL logic here? last condition */
  		if (commands[0] || commands[1] || commands[2] || commands[3] ||
  		    commands[4] || commands[5] || commands[6] ||
  		    commands[7] > BIT(NL802154_CMD_FRAME_MAX))
  			return -EINVAL;
  
  		key.cmd_frame_ids = commands[7];
  	} else {
  		key.cmd_frame_ids = 0;
  	}
  
  	nla_memcpy(key.key, attrs[NL802154_KEY_ATTR_BYTES], NL802154_KEY_SIZE);
  
  	if (ieee802154_llsec_parse_key_id(attrs[NL802154_KEY_ATTR_ID], &id) < 0)
  		return -ENOBUFS;
  
  	return rdev_add_llsec_key(rdev, wpan_dev, &id, &key);
  }
  
  static int nl802154_del_llsec_key(struct sk_buff *skb, struct genl_info *info)
  {
  	struct cfg802154_registered_device *rdev = info->user_ptr[0];
  	struct net_device *dev = info->user_ptr[1];
  	struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
  	struct nlattr *attrs[NL802154_KEY_ATTR_MAX + 1];
  	struct ieee802154_llsec_key_id id;
  
  	if (nla_parse_nested(attrs, NL802154_KEY_ATTR_MAX,
  			     info->attrs[NL802154_ATTR_SEC_KEY],

  			     nl802154_key_policy, info->extack))

  		return -EINVAL;
  
  	if (ieee802154_llsec_parse_key_id(attrs[NL802154_KEY_ATTR_ID], &id) < 0)
  		return -ENOBUFS;
  
  	return rdev_del_llsec_key(rdev, wpan_dev, &id);
  }
  
  static int nl802154_send_device(struct sk_buff *msg, u32 cmd, u32 portid,
  				u32 seq, int flags,
  				struct cfg802154_registered_device *rdev,
  				struct net_device *dev,
  				const struct ieee802154_llsec_device *dev_desc)
  {
  	void *hdr;
  	struct nlattr *nl_device;
  
  	hdr = nl802154hdr_put(msg, portid, seq, flags, cmd);
  	if (!hdr)
  		return -1;
  
  	if (nla_put_u32(msg, NL802154_ATTR_IFINDEX, dev->ifindex))
  		goto nla_put_failure;
  
  	nl_device = nla_nest_start(msg, NL802154_ATTR_SEC_DEVICE);
  	if (!nl_device)
  		goto nla_put_failure;
  
  	if (nla_put_u32(msg, NL802154_DEV_ATTR_FRAME_COUNTER,
  			dev_desc->frame_counter) ||
  	    nla_put_le16(msg, NL802154_DEV_ATTR_PAN_ID, dev_desc->pan_id) ||
  	    nla_put_le16(msg, NL802154_DEV_ATTR_SHORT_ADDR,
  			 dev_desc->short_addr) ||
  	    nla_put_le64(msg, NL802154_DEV_ATTR_EXTENDED_ADDR,

  			 dev_desc->hwaddr, NL802154_DEV_ATTR_PAD) ||

  	    nla_put_u8(msg, NL802154_DEV_ATTR_SECLEVEL_EXEMPT,
  		       dev_desc->seclevel_exempt) ||
  	    nla_put_u32(msg, NL802154_DEV_ATTR_KEY_MODE, dev_desc->key_mode))
  		goto nla_put_failure;
  
  	nla_nest_end(msg, nl_device);
  	genlmsg_end(msg, hdr);
  
  	return 0;
  
  nla_put_failure:
  	genlmsg_cancel(msg, hdr);
  	return -EMSGSIZE;
  }
  
  static int
  nl802154_dump_llsec_dev(struct sk_buff *skb, struct netlink_callback *cb)
  {
  	struct cfg802154_registered_device *rdev = NULL;
  	struct ieee802154_llsec_device *dev;
  	struct ieee802154_llsec_table *table;
  	struct wpan_dev *wpan_dev;
  	int err;
  
  	err = nl802154_prepare_wpan_dev_dump(skb, cb, &rdev, &wpan_dev);
  	if (err)
  		return err;
  
  	if (!wpan_dev->netdev) {
  		err = -EINVAL;
  		goto out_err;
  	}
  
  	rdev_lock_llsec_table(rdev, wpan_dev);
  	rdev_get_llsec_table(rdev, wpan_dev, &table);
  
  	/* TODO make it like station dump */
  	if (cb->args[2])
  		goto out;
  
  	list_for_each_entry(dev, &table->devices, list) {
  		if (nl802154_send_device(skb, NL802154_CMD_NEW_SEC_LEVEL,
  					 NETLINK_CB(cb->skb).portid,
  					 cb->nlh->nlmsg_seq, NLM_F_MULTI,
  					 rdev, wpan_dev->netdev, dev) < 0) {
  			/* TODO */
  			err = -EIO;
  			rdev_unlock_llsec_table(rdev, wpan_dev);
  			goto out_err;
  		}
  	}
  
  	cb->args[2] = 1;
  
  out:
  	rdev_unlock_llsec_table(rdev, wpan_dev);
  	err = skb->len;
  out_err:
  	nl802154_finish_wpan_dev_dump(rdev);
  
  	return err;
  }
  
  static const struct nla_policy nl802154_dev_policy[NL802154_DEV_ATTR_MAX + 1] = {
  	[NL802154_DEV_ATTR_FRAME_COUNTER] = { NLA_U32 },
  	[NL802154_DEV_ATTR_PAN_ID] = { .type = NLA_U16 },
  	[NL802154_DEV_ATTR_SHORT_ADDR] = { .type = NLA_U16 },
  	[NL802154_DEV_ATTR_EXTENDED_ADDR] = { .type = NLA_U64 },
  	[NL802154_DEV_ATTR_SECLEVEL_EXEMPT] = { NLA_U8 },
  	[NL802154_DEV_ATTR_KEY_MODE] = { NLA_U32 },
  };
  
  static int
  ieee802154_llsec_parse_device(struct nlattr *nla,
  			      struct ieee802154_llsec_device *dev)
  {
  	struct nlattr *attrs[NL802154_DEV_ATTR_MAX + 1];

  	if (!nla || nla_parse_nested(attrs, NL802154_DEV_ATTR_MAX,
  				     nla, nl802154_dev_policy, NULL))

  		return -EINVAL;
  
  	memset(dev, 0, sizeof(*dev));
  
  	if (!attrs[NL802154_DEV_ATTR_FRAME_COUNTER] ||
  	    !attrs[NL802154_DEV_ATTR_PAN_ID] ||
  	    !attrs[NL802154_DEV_ATTR_SHORT_ADDR] ||
  	    !attrs[NL802154_DEV_ATTR_EXTENDED_ADDR] ||
  	    !attrs[NL802154_DEV_ATTR_SECLEVEL_EXEMPT] ||
  	    !attrs[NL802154_DEV_ATTR_KEY_MODE])
  		return -EINVAL;
  
  	/* TODO be32 */
  	dev->frame_counter = nla_get_u32(attrs[NL802154_DEV_ATTR_FRAME_COUNTER]);
  	dev->pan_id = nla_get_le16(attrs[NL802154_DEV_ATTR_PAN_ID]);
  	dev->short_addr = nla_get_le16(attrs[NL802154_DEV_ATTR_SHORT_ADDR]);
  	/* TODO rename hwaddr to extended_addr */
  	dev->hwaddr = nla_get_le64(attrs[NL802154_DEV_ATTR_EXTENDED_ADDR]);
  	dev->seclevel_exempt = nla_get_u8(attrs[NL802154_DEV_ATTR_SECLEVEL_EXEMPT]);
  	dev->key_mode = nla_get_u32(attrs[NL802154_DEV_ATTR_KEY_MODE]);
  
  	if (dev->key_mode > NL802154_DEVKEY_MAX ||
  	    (dev->seclevel_exempt != 0 && dev->seclevel_exempt != 1))
  		return -EINVAL;
  
  	return 0;
  }
  
  static int nl802154_add_llsec_dev(struct sk_buff *skb, struct genl_info *info)
  {
  	struct cfg802154_registered_device *rdev = info->user_ptr[0];
  	struct net_device *dev = info->user_ptr[1];
  	struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
  	struct ieee802154_llsec_device dev_desc;
  
  	if (ieee802154_llsec_parse_device(info->attrs[NL802154_ATTR_SEC_DEVICE],
  					  &dev_desc) < 0)
  		return -EINVAL;
  
  	return rdev_add_device(rdev, wpan_dev, &dev_desc);
  }
  
  static int nl802154_del_llsec_dev(struct sk_buff *skb, struct genl_info *info)
  {
  	struct cfg802154_registered_device *rdev = info->user_ptr[0];
  	struct net_device *dev = info->user_ptr[1];
  	struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
  	struct nlattr *attrs[NL802154_DEV_ATTR_MAX + 1];
  	__le64 extended_addr;
  
  	if (nla_parse_nested(attrs, NL802154_DEV_ATTR_MAX,
  			     info->attrs[NL802154_ATTR_SEC_DEVICE],

  			     nl802154_dev_policy, info->extack))

  		return -EINVAL;
  
  	if (!attrs[NL802154_DEV_ATTR_EXTENDED_ADDR])
  		return -EINVAL;
  
  	extended_addr = nla_get_le64(attrs[NL802154_DEV_ATTR_EXTENDED_ADDR]);
  	return rdev_del_device(rdev, wpan_dev, extended_addr);
  }
  
  static int nl802154_send_devkey(struct sk_buff *msg, u32 cmd, u32 portid,
  				u32 seq, int flags,
  				struct cfg802154_registered_device *rdev,
  				struct net_device *dev, __le64 extended_addr,
  				const struct ieee802154_llsec_device_key *devkey)
  {
  	void *hdr;
  	struct nlattr *nl_devkey, *nl_key_id;
  
  	hdr = nl802154hdr_put(msg, portid, seq, flags, cmd);
  	if (!hdr)
  		return -1;
  
  	if (nla_put_u32(msg, NL802154_ATTR_IFINDEX, dev->ifindex))
  		goto nla_put_failure;
  
  	nl_devkey = nla_nest_start(msg, NL802154_ATTR_SEC_DEVKEY);
  	if (!nl_devkey)
  		goto nla_put_failure;
  
  	if (nla_put_le64(msg, NL802154_DEVKEY_ATTR_EXTENDED_ADDR,

  			 extended_addr, NL802154_DEVKEY_ATTR_PAD) ||

  	    nla_put_u32(msg, NL802154_DEVKEY_ATTR_FRAME_COUNTER,
  			devkey->frame_counter))
  		goto nla_put_failure;
  
  	nl_key_id = nla_nest_start(msg, NL802154_DEVKEY_ATTR_ID);
  	if (!nl_key_id)
  		goto nla_put_failure;
  
  	if (ieee802154_llsec_send_key_id(msg, &devkey->key_id) < 0)
  		goto nla_put_failure;
  
  	nla_nest_end(msg, nl_key_id);
  	nla_nest_end(msg, nl_devkey);
  	genlmsg_end(msg, hdr);
  
  	return 0;
  
  nla_put_failure:
  	genlmsg_cancel(msg, hdr);
  	return -EMSGSIZE;
  }
  
  static int
  nl802154_dump_llsec_devkey(struct sk_buff *skb, struct netlink_callback *cb)
  {
  	struct cfg802154_registered_device *rdev = NULL;
  	struct ieee802154_llsec_device_key *kpos;
  	struct ieee802154_llsec_device *dpos;
  	struct ieee802154_llsec_table *table;
  	struct wpan_dev *wpan_dev;
  	int err;
  
  	err = nl802154_prepare_wpan_dev_dump(skb, cb, &rdev, &wpan_dev);
  	if (err)
  		return err;
  
  	if (!wpan_dev->netdev) {
  		err = -EINVAL;
  		goto out_err;
  	}
  
  	rdev_lock_llsec_table(rdev, wpan_dev);
  	rdev_get_llsec_table(rdev, wpan_dev, &table);
  
  	/* TODO make it like station dump */
  	if (cb->args[2])
  		goto out;
  
  	/* TODO look if remove devkey and do some nested attribute */
  	list_for_each_entry(dpos, &table->devices, list) {
  		list_for_each_entry(kpos, &dpos->keys, list) {
  			if (nl802154_send_devkey(skb,
  						 NL802154_CMD_NEW_SEC_LEVEL,
  						 NETLINK_CB(cb->skb).portid,
  						 cb->nlh->nlmsg_seq,
  						 NLM_F_MULTI, rdev,
  						 wpan_dev->netdev,
  						 dpos->hwaddr,
  						 kpos) < 0) {
  				/* TODO */
  				err = -EIO;
  				rdev_unlock_llsec_table(rdev, wpan_dev);
  				goto out_err;
  			}
  		}
  	}
  
  	cb->args[2] = 1;
  
  out:
  	rdev_unlock_llsec_table(rdev, wpan_dev);
  	err = skb->len;
  out_err:
  	nl802154_finish_wpan_dev_dump(rdev);
  
  	return err;
  }
  
  static const struct nla_policy nl802154_devkey_policy[NL802154_DEVKEY_ATTR_MAX + 1] = {
  	[NL802154_DEVKEY_ATTR_FRAME_COUNTER] = { NLA_U32 },
  	[NL802154_DEVKEY_ATTR_EXTENDED_ADDR] = { NLA_U64 },
  	[NL802154_DEVKEY_ATTR_ID] = { NLA_NESTED },
  };
  
  static int nl802154_add_llsec_devkey(struct sk_buff *skb, struct genl_info *info)
  {
  	struct cfg802154_registered_device *rdev = info->user_ptr[0];
  	struct net_device *dev = info->user_ptr[1];
  	struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
  	struct nlattr *attrs[NL802154_DEVKEY_ATTR_MAX + 1];
  	struct ieee802154_llsec_device_key key;
  	__le64 extended_addr;
  
  	if (!info->attrs[NL802154_ATTR_SEC_DEVKEY] ||
  	    nla_parse_nested(attrs, NL802154_DEVKEY_ATTR_MAX,
  			     info->attrs[NL802154_ATTR_SEC_DEVKEY],

  			     nl802154_devkey_policy, info->extack) < 0)

  		return -EINVAL;
  
  	if (!attrs[NL802154_DEVKEY_ATTR_FRAME_COUNTER] ||
  	    !attrs[NL802154_DEVKEY_ATTR_EXTENDED_ADDR])
  		return -EINVAL;
  
  	/* TODO change key.id ? */
  	if (ieee802154_llsec_parse_key_id(attrs[NL802154_DEVKEY_ATTR_ID],
  					  &key.key_id) < 0)
  		return -ENOBUFS;
  
  	/* TODO be32 */
  	key.frame_counter = nla_get_u32(attrs[NL802154_DEVKEY_ATTR_FRAME_COUNTER]);
  	/* TODO change naming hwaddr -> extended_addr
  	 * check unique identifier short+pan OR extended_addr
  	 */
  	extended_addr = nla_get_le64(attrs[NL802154_DEVKEY_ATTR_EXTENDED_ADDR]);
  	return rdev_add_devkey(rdev, wpan_dev, extended_addr, &key);
  }
  
  static int nl802154_del_llsec_devkey(struct sk_buff *skb, struct genl_info *info)
  {
  	struct cfg802154_registered_device *rdev = info->user_ptr[0];
  	struct net_device *dev = info->user_ptr[1];
  	struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
  	struct nlattr *attrs[NL802154_DEVKEY_ATTR_MAX + 1];
  	struct ieee802154_llsec_device_key key;
  	__le64 extended_addr;
  
  	if (nla_parse_nested(attrs, NL802154_DEVKEY_ATTR_MAX,
  			     info->attrs[NL802154_ATTR_SEC_DEVKEY],

  			     nl802154_devkey_policy, info->extack))

  		return -EINVAL;
  
  	if (!attrs[NL802154_DEVKEY_ATTR_EXTENDED_ADDR])
  		return -EINVAL;
  
  	/* TODO change key.id ? */
  	if (ieee802154_llsec_parse_key_id(attrs[NL802154_DEVKEY_ATTR_ID],
  					  &key.key_id) < 0)
  		return -ENOBUFS;
  
  	/* TODO change naming hwaddr -> extended_addr
  	 * check unique identifier short+pan OR extended_addr
  	 */
  	extended_addr = nla_get_le64(attrs[NL802154_DEVKEY_ATTR_EXTENDED_ADDR]);
  	return rdev_del_devkey(rdev, wpan_dev, extended_addr, &key);
  }
  
  static int nl802154_send_seclevel(struct sk_buff *msg, u32 cmd, u32 portid,
  				  u32 seq, int flags,
  				  struct cfg802154_registered_device *rdev,
  				  struct net_device *dev,
  				  const struct ieee802154_llsec_seclevel *sl)
  {
  	void *hdr;
  	struct nlattr *nl_seclevel;
  
  	hdr = nl802154hdr_put(msg, portid, seq, flags, cmd);
  	if (!hdr)
  		return -1;
  
  	if (nla_put_u32(msg, NL802154_ATTR_IFINDEX, dev->ifindex))
  		goto nla_put_failure;
  
  	nl_seclevel = nla_nest_start(msg, NL802154_ATTR_SEC_LEVEL);
  	if (!nl_seclevel)
  		goto nla_put_failure;
  
  	if (nla_put_u32(msg, NL802154_SECLEVEL_ATTR_FRAME, sl->frame_type) ||
  	    nla_put_u32(msg, NL802154_SECLEVEL_ATTR_LEVELS, sl->sec_levels) ||
  	    nla_put_u8(msg, NL802154_SECLEVEL_ATTR_DEV_OVERRIDE,
  		       sl->device_override))
  		goto nla_put_failure;
  
  	if (sl->frame_type == NL802154_FRAME_CMD) {
  		if (nla_put_u32(msg, NL802154_SECLEVEL_ATTR_CMD_FRAME,
  				sl->cmd_frame_id))
  			goto nla_put_failure;
  	}
  
  	nla_nest_end(msg, nl_seclevel);
  	genlmsg_end(msg, hdr);
  
  	return 0;
  
  nla_put_failure:
  	genlmsg_cancel(msg, hdr);
  	return -EMSGSIZE;
  }
  
  static int
  nl802154_dump_llsec_seclevel(struct sk_buff *skb, struct netlink_callback *cb)
  {
  	struct cfg802154_registered_device *rdev = NULL;
  	struct ieee802154_llsec_seclevel *sl;
  	struct ieee802154_llsec_table *table;
  	struct wpan_dev *wpan_dev;
  	int err;
  
  	err = nl802154_prepare_wpan_dev_dump(skb, cb, &rdev, &wpan_dev);
  	if (err)
  		return err;
  
  	if (!wpan_dev->netdev) {
  		err = -EINVAL;
  		goto out_err;
  	}
  
  	rdev_lock_llsec_table(rdev, wpan_dev);
  	rdev_get_llsec_table(rdev, wpan_dev, &table);
  
  	/* TODO make it like station dump */
  	if (cb->args[2])
  		goto out;
  
  	list_for_each_entry(sl, &table->security_levels, list) {
  		if (nl802154_send_seclevel(skb, NL802154_CMD_NEW_SEC_LEVEL,
  					   NETLINK_CB(cb->skb).portid,
  					   cb->nlh->nlmsg_seq, NLM_F_MULTI,
  					   rdev, wpan_dev->netdev, sl) < 0) {
  			/* TODO */
  			err = -EIO;
  			rdev_unlock_llsec_table(rdev, wpan_dev);
  			goto out_err;
  		}
  	}
  
  	cb->args[2] = 1;
  
  out:
  	rdev_unlock_llsec_table(rdev, wpan_dev);
  	err = skb->len;
  out_err:
  	nl802154_finish_wpan_dev_dump(rdev);
  
  	return err;
  }
  
  static const struct nla_policy nl802154_seclevel_policy[NL802154_SECLEVEL_ATTR_MAX + 1] = {
  	[NL802154_SECLEVEL_ATTR_LEVELS] = { .type = NLA_U8 },
  	[NL802154_SECLEVEL_ATTR_FRAME] = { .type = NLA_U32 },
  	[NL802154_SECLEVEL_ATTR_CMD_FRAME] = { .type = NLA_U32 },
  	[NL802154_SECLEVEL_ATTR_DEV_OVERRIDE] = { .type = NLA_U8 },
  };
  
  static int
  llsec_parse_seclevel(struct nlattr *nla, struct ieee802154_llsec_seclevel *sl)
  {
  	struct nlattr *attrs[NL802154_SECLEVEL_ATTR_MAX + 1];

  	if (!nla || nla_parse_nested(attrs, NL802154_SECLEVEL_ATTR_MAX,
  				     nla, nl802154_seclevel_policy, NULL))

  		return -EINVAL;
  
  	memset(sl, 0, sizeof(*sl));
  
  	if (!attrs[NL802154_SECLEVEL_ATTR_LEVELS] ||
  	    !attrs[NL802154_SECLEVEL_ATTR_FRAME] ||
  	    !attrs[NL802154_SECLEVEL_ATTR_DEV_OVERRIDE])
  		return -EINVAL;
  
  	sl->sec_levels = nla_get_u8(attrs[NL802154_SECLEVEL_ATTR_LEVELS]);
  	sl->frame_type = nla_get_u32(attrs[NL802154_SECLEVEL_ATTR_FRAME]);
  	sl->device_override = nla_get_u8(attrs[NL802154_SECLEVEL_ATTR_DEV_OVERRIDE]);
  	if (sl->frame_type > NL802154_FRAME_MAX ||
  	    (sl->device_override != 0 && sl->device_override != 1))
  		return -EINVAL;
  
  	if (sl->frame_type == NL802154_FRAME_CMD) {
  		if (!attrs[NL802154_SECLEVEL_ATTR_CMD_FRAME])
  			return -EINVAL;
  
  		sl->cmd_frame_id = nla_get_u32(attrs[NL802154_SECLEVEL_ATTR_CMD_FRAME]);
  		if (sl->cmd_frame_id > NL802154_CMD_FRAME_MAX)
  			return -EINVAL;
  	}
  
  	return 0;
  }
  
  static int nl802154_add_llsec_seclevel(struct sk_buff *skb,
  				       struct genl_info *info)
  {
  	struct cfg802154_registered_device *rdev = info->user_ptr[0];
  	struct net_device *dev = info->user_ptr[1];
  	struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
  	struct ieee802154_llsec_seclevel sl;
  
  	if (llsec_parse_seclevel(info->attrs[NL802154_ATTR_SEC_LEVEL],
  				 &sl) < 0)
  		return -EINVAL;
  
  	return rdev_add_seclevel(rdev, wpan_dev, &sl);
  }
  
  static int nl802154_del_llsec_seclevel(struct sk_buff *skb,
  				       struct genl_info *info)
  {
  	struct cfg802154_registered_device *rdev = info->user_ptr[0];
  	struct net_device *dev = info->user_ptr[1];
  	struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
  	struct ieee802154_llsec_seclevel sl;
  
  	if (!info->attrs[NL802154_ATTR_SEC_LEVEL] ||
  	    llsec_parse_seclevel(info->attrs[NL802154_ATTR_SEC_LEVEL],
  				 &sl) < 0)
  		return -EINVAL;
  
  	return rdev_del_seclevel(rdev, wpan_dev, &sl);
  }
  #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
  
  #define NL802154_FLAG_NEED_WPAN_PHY	0x01
  #define NL802154_FLAG_NEED_NETDEV	0x02
  #define NL802154_FLAG_NEED_RTNL		0x04
  #define NL802154_FLAG_CHECK_NETDEV_UP	0x08
  #define NL802154_FLAG_NEED_NETDEV_UP	(NL802154_FLAG_NEED_NETDEV |\
  					 NL802154_FLAG_CHECK_NETDEV_UP)
  #define NL802154_FLAG_NEED_WPAN_DEV	0x10
  #define NL802154_FLAG_NEED_WPAN_DEV_UP	(NL802154_FLAG_NEED_WPAN_DEV |\
  					 NL802154_FLAG_CHECK_NETDEV_UP)
  
  static int nl802154_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
  			     struct genl_info *info)
  {
  	struct cfg802154_registered_device *rdev;
  	struct wpan_dev *wpan_dev;
  	struct net_device *dev;
  	bool rtnl = ops->internal_flags & NL802154_FLAG_NEED_RTNL;
  
  	if (rtnl)
  		rtnl_lock();
  
  	if (ops->internal_flags & NL802154_FLAG_NEED_WPAN_PHY) {
  		rdev = cfg802154_get_dev_from_info(genl_info_net(info), info);
  		if (IS_ERR(rdev)) {
  			if (rtnl)
  				rtnl_unlock();
  			return PTR_ERR(rdev);
  		}
  		info->user_ptr[0] = rdev;
  	} else if (ops->internal_flags & NL802154_FLAG_NEED_NETDEV ||
  		   ops->internal_flags & NL802154_FLAG_NEED_WPAN_DEV) {
  		ASSERT_RTNL();
  		wpan_dev = __cfg802154_wpan_dev_from_attrs(genl_info_net(info),
  							   info->attrs);
  		if (IS_ERR(wpan_dev)) {
  			if (rtnl)
  				rtnl_unlock();
  			return PTR_ERR(wpan_dev);
  		}
  
  		dev = wpan_dev->netdev;
  		rdev = wpan_phy_to_rdev(wpan_dev->wpan_phy);
  
  		if (ops->internal_flags & NL802154_FLAG_NEED_NETDEV) {
  			if (!dev) {
  				if (rtnl)
  					rtnl_unlock();
  				return -EINVAL;
  			}
  
  			info->user_ptr[1] = dev;
  		} else {
  			info->user_ptr[1] = wpan_dev;
  		}
  
  		if (dev) {
  			if (ops->internal_flags & NL802154_FLAG_CHECK_NETDEV_UP &&
  			    !netif_running(dev)) {
  				if (rtnl)
  					rtnl_unlock();
  				return -ENETDOWN;
  			}
  
  			dev_hold(dev);
  		}
  
  		info->user_ptr[0] = rdev;
  	}
  
  	return 0;
  }
  
  static void nl802154_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
  			       struct genl_info *info)
  {
  	if (info->user_ptr[1]) {
  		if (ops->internal_flags & NL802154_FLAG_NEED_WPAN_DEV) {
  			struct wpan_dev *wpan_dev = info->user_ptr[1];
  
  			if (wpan_dev->netdev)
  				dev_put(wpan_dev->netdev);
  		} else {
  			dev_put(info->user_ptr[1]);
  		}
  	}
  
  	if (ops->internal_flags & NL802154_FLAG_NEED_RTNL)
  		rtnl_unlock();
  }
  
  static const struct genl_ops nl802154_ops[] = {
  	{
  		.cmd = NL802154_CMD_GET_WPAN_PHY,
  		.doit = nl802154_get_wpan_phy,
  		.dumpit = nl802154_dump_wpan_phy,
  		.done = nl802154_dump_wpan_phy_done,
  		.policy = nl802154_policy,
  		/* can be retrieved by unprivileged users */
  		.internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
  				  NL802154_FLAG_NEED_RTNL,
  	},
  	{
  		.cmd = NL802154_CMD_GET_INTERFACE,
  		.doit = nl802154_get_interface,
  		.dumpit = nl802154_dump_interface,
  		.policy = nl802154_policy,
  		/* can be retrieved by unprivileged users */
  		.internal_flags = NL802154_FLAG_NEED_WPAN_DEV |
  				  NL802154_FLAG_NEED_RTNL,
  	},
  	{
  		.cmd = NL802154_CMD_NEW_INTERFACE,
  		.doit = nl802154_new_interface,
  		.policy = nl802154_policy,
  		.flags = GENL_ADMIN_PERM,
  		.internal_flags = NL802154_FLAG_NEED_WPAN_PHY |

  				  NL802154_FLAG_NEED_RTNL,
  	},
  	{

  		.cmd = NL802154_CMD_DEL_INTERFACE,
  		.doit = nl802154_del_interface,
  		.policy = nl802154_policy,
  		.flags = GENL_ADMIN_PERM,
  		.internal_flags = NL802154_FLAG_NEED_WPAN_DEV |
  				  NL802154_FLAG_NEED_RTNL,
  	},
  	{

  		.cmd = NL802154_CMD_SET_CHANNEL,
  		.doit = nl802154_set_channel,
  		.policy = nl802154_policy,
  		.flags = GENL_ADMIN_PERM,
  		.internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
  				  NL802154_FLAG_NEED_RTNL,
  	},

  	{

  		.cmd = NL802154_CMD_SET_CCA_MODE,
  		.doit = nl802154_set_cca_mode,
  		.policy = nl802154_policy,
  		.flags = GENL_ADMIN_PERM,
  		.internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
  				  NL802154_FLAG_NEED_RTNL,
  	},
  	{

  		.cmd = NL802154_CMD_SET_CCA_ED_LEVEL,
  		.doit = nl802154_set_cca_ed_level,
  		.policy = nl802154_policy,
  		.flags = GENL_ADMIN_PERM,
  		.internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
  				  NL802154_FLAG_NEED_RTNL,
  	},
  	{

  		.cmd = NL802154_CMD_SET_TX_POWER,
  		.doit = nl802154_set_tx_power,
  		.policy = nl802154_policy,
  		.flags = GENL_ADMIN_PERM,

  		.internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
  				  NL802154_FLAG_NEED_RTNL,
  	},
  	{
  		.cmd = NL802154_CMD_SET_WPAN_PHY_NETNS,
  		.doit = nl802154_wpan_phy_netns,
  		.policy = nl802154_policy,
  		.flags = GENL_ADMIN_PERM,

  		.internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
  				  NL802154_FLAG_NEED_RTNL,
  	},
  	{

  		.cmd = NL802154_CMD_SET_PAN_ID,
  		.doit = nl802154_set_pan_id,
  		.policy = nl802154_policy,
  		.flags = GENL_ADMIN_PERM,
  		.internal_flags = NL802154_FLAG_NEED_NETDEV |
  				  NL802154_FLAG_NEED_RTNL,
  	},

  	{
  		.cmd = NL802154_CMD_SET_SHORT_ADDR,
  		.doit = nl802154_set_short_addr,
  		.policy = nl802154_policy,
  		.flags = GENL_ADMIN_PERM,
  		.internal_flags = NL802154_FLAG_NEED_NETDEV |
  				  NL802154_FLAG_NEED_RTNL,
  	},

  	{
  		.cmd = NL802154_CMD_SET_BACKOFF_EXPONENT,
  		.doit = nl802154_set_backoff_exponent,
  		.policy = nl802154_policy,
  		.flags = GENL_ADMIN_PERM,
  		.internal_flags = NL802154_FLAG_NEED_NETDEV |
  				  NL802154_FLAG_NEED_RTNL,
  	},

  	{
  		.cmd = NL802154_CMD_SET_MAX_CSMA_BACKOFFS,
  		.doit = nl802154_set_max_csma_backoffs,
  		.policy = nl802154_policy,
  		.flags = GENL_ADMIN_PERM,
  		.internal_flags = NL802154_FLAG_NEED_NETDEV |
  				  NL802154_FLAG_NEED_RTNL,
  	},

  	{
  		.cmd = NL802154_CMD_SET_MAX_FRAME_RETRIES,
  		.doit = nl802154_set_max_frame_retries,
  		.policy = nl802154_policy,
  		.flags = GENL_ADMIN_PERM,
  		.internal_flags = NL802154_FLAG_NEED_NETDEV |
  				  NL802154_FLAG_NEED_RTNL,
  	},

  	{
  		.cmd = NL802154_CMD_SET_LBT_MODE,
  		.doit = nl802154_set_lbt_mode,
  		.policy = nl802154_policy,
  		.flags = GENL_ADMIN_PERM,
  		.internal_flags = NL802154_FLAG_NEED_NETDEV |
  				  NL802154_FLAG_NEED_RTNL,
  	},

  	{
  		.cmd = NL802154_CMD_SET_ACKREQ_DEFAULT,
  		.doit = nl802154_set_ackreq_default,
  		.policy = nl802154_policy,
  		.flags = GENL_ADMIN_PERM,
  		.internal_flags = NL802154_FLAG_NEED_NETDEV |
  				  NL802154_FLAG_NEED_RTNL,
  	},

  #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
  	{
  		.cmd = NL802154_CMD_SET_SEC_PARAMS,
  		.doit = nl802154_set_llsec_params,
  		.policy = nl802154_policy,
  		.flags = GENL_ADMIN_PERM,
  		.internal_flags = NL802154_FLAG_NEED_NETDEV |
  				  NL802154_FLAG_NEED_RTNL,
  	},
  	{
  		.cmd = NL802154_CMD_GET_SEC_KEY,
  		/* TODO .doit by matching key id? */
  		.dumpit = nl802154_dump_llsec_key,
  		.policy = nl802154_policy,
  		.flags = GENL_ADMIN_PERM,
  		.internal_flags = NL802154_FLAG_NEED_NETDEV |
  				  NL802154_FLAG_NEED_RTNL,
  	},
  	{
  		.cmd = NL802154_CMD_NEW_SEC_KEY,
  		.doit = nl802154_add_llsec_key,
  		.policy = nl802154_policy,
  		.flags = GENL_ADMIN_PERM,
  		.internal_flags = NL802154_FLAG_NEED_NETDEV |
  				  NL802154_FLAG_NEED_RTNL,
  	},
  	{
  		.cmd = NL802154_CMD_DEL_SEC_KEY,
  		.doit = nl802154_del_llsec_key,
  		.policy = nl802154_policy,
  		.flags = GENL_ADMIN_PERM,
  		.internal_flags = NL802154_FLAG_NEED_NETDEV |
  				  NL802154_FLAG_NEED_RTNL,
  	},
  	/* TODO unique identifier must short+pan OR extended_addr */
  	{
  		.cmd = NL802154_CMD_GET_SEC_DEV,
  		/* TODO .doit by matching extended_addr? */
  		.dumpit = nl802154_dump_llsec_dev,
  		.policy = nl802154_policy,
  		.flags = GENL_ADMIN_PERM,
  		.internal_flags = NL802154_FLAG_NEED_NETDEV |
  				  NL802154_FLAG_NEED_RTNL,
  	},
  	{
  		.cmd = NL802154_CMD_NEW_SEC_DEV,
  		.doit = nl802154_add_llsec_dev,
  		.policy = nl802154_policy,
  		.flags = GENL_ADMIN_PERM,
  		.internal_flags = NL802154_FLAG_NEED_NETDEV |
  				  NL802154_FLAG_NEED_RTNL,
  	},
  	{
  		.cmd = NL802154_CMD_DEL_SEC_DEV,
  		.doit = nl802154_del_llsec_dev,
  		.policy = nl802154_policy,
  		.flags = GENL_ADMIN_PERM,
  		.internal_flags = NL802154_FLAG_NEED_NETDEV |
  				  NL802154_FLAG_NEED_RTNL,
  	},
  	/* TODO remove complete devkey, put it as nested? */
  	{
  		.cmd = NL802154_CMD_GET_SEC_DEVKEY,
  		/* TODO doit by matching ??? */
  		.dumpit = nl802154_dump_llsec_devkey,
  		.policy = nl802154_policy,
  		.flags = GENL_ADMIN_PERM,
  		.internal_flags = NL802154_FLAG_NEED_NETDEV |
  				  NL802154_FLAG_NEED_RTNL,
  	},
  	{
  		.cmd = NL802154_CMD_NEW_SEC_DEVKEY,
  		.doit = nl802154_add_llsec_devkey,
  		.policy = nl802154_policy,
  		.flags = GENL_ADMIN_PERM,
  		.internal_flags = NL802154_FLAG_NEED_NETDEV |
  				  NL802154_FLAG_NEED_RTNL,
  	},
  	{
  		.cmd = NL802154_CMD_DEL_SEC_DEVKEY,
  		.doit = nl802154_del_llsec_devkey,
  		.policy = nl802154_policy,
  		.flags = GENL_ADMIN_PERM,
  		.internal_flags = NL802154_FLAG_NEED_NETDEV |
  				  NL802154_FLAG_NEED_RTNL,
  	},
  	{
  		.cmd = NL802154_CMD_GET_SEC_LEVEL,
  		/* TODO .doit by matching frame_type? */
  		.dumpit = nl802154_dump_llsec_seclevel,
  		.policy = nl802154_policy,
  		.flags = GENL_ADMIN_PERM,
  		.internal_flags = NL802154_FLAG_NEED_NETDEV |
  				  NL802154_FLAG_NEED_RTNL,
  	},
  	{
  		.cmd = NL802154_CMD_NEW_SEC_LEVEL,
  		.doit = nl802154_add_llsec_seclevel,
  		.policy = nl802154_policy,
  		.flags = GENL_ADMIN_PERM,
  		.internal_flags = NL802154_FLAG_NEED_NETDEV |
  				  NL802154_FLAG_NEED_RTNL,
  	},
  	{
  		.cmd = NL802154_CMD_DEL_SEC_LEVEL,
  		/* TODO match frame_type only? */
  		.doit = nl802154_del_llsec_seclevel,
  		.policy = nl802154_policy,
  		.flags = GENL_ADMIN_PERM,
  		.internal_flags = NL802154_FLAG_NEED_NETDEV |
  				  NL802154_FLAG_NEED_RTNL,
  	},
  #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */

  };

  static struct genl_family nl802154_fam __ro_after_init = {

  	.name = NL802154_GENL_NAME,	/* have users key off the name instead */
  	.hdrsize = 0,			/* no private header */
  	.version = 1,			/* no particular meaning now */
  	.maxattr = NL802154_ATTR_MAX,
  	.netnsok = true,
  	.pre_doit = nl802154_pre_doit,
  	.post_doit = nl802154_post_doit,
  	.module = THIS_MODULE,
  	.ops = nl802154_ops,
  	.n_ops = ARRAY_SIZE(nl802154_ops),
  	.mcgrps = nl802154_mcgrps,
  	.n_mcgrps = ARRAY_SIZE(nl802154_mcgrps),
  };

  /* initialisation/exit functions */

  int __init nl802154_init(void)

  {

  	return genl_register_family(&nl802154_fam);

  }
  
  void nl802154_exit(void)
  {
  	genl_unregister_family(&nl802154_fam);
  }