Release 4.11 net/ieee802154/nl-mac.c

/*
 * Netlink interface for IEEE 802.15.4 stack
 *
 * Copyright 2007, 2008 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.
 *
 * Written by:
 * Sergey Lapin <slapin@ossfans.org>
 * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
 * Maxim Osipov <maxim.osipov@siemens.com>
 */

#include <linux/gfp.h>
#include <linux/kernel.h>
#include <linux/if_arp.h>
#include <linux/netdevice.h>
#include <linux/ieee802154.h>
#include <net/netlink.h>
#include <net/genetlink.h>
#include <net/sock.h>
#include <linux/nl802154.h>
#include <linux/export.h>
#include <net/af_ieee802154.h>
#include <net/ieee802154_netdev.h>
#include <net/cfg802154.h>

#include "ieee802154.h"



static int nla_put_hwaddr(struct sk_buff *msg, int type, __le64 hwaddr,
			  int padattr)
{
	return nla_put_u64_64bit(msg, type, swab64((__force u64)hwaddr),
				 padattr);
}

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7
17.95%
1
25.00%
Nicolas Dichtel
6
15.38%
1
25.00%
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39
100.00%
4
100.00%



static __le64 nla_get_hwaddr(const struct nlattr *nla)
{
	return ieee802154_devaddr_from_raw(nla_data(nla));
}

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static int nla_put_shortaddr(struct sk_buff *msg, int type, __le16 addr)
{
	return nla_put_u16(msg, type, le16_to_cpu(addr));
}

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2
100.00%



static __le16 nla_get_shortaddr(const struct nlattr *nla)
{
	return cpu_to_le16(nla_get_u16(nla));
}

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static int ieee802154_nl_start_confirm(struct net_device *dev, u8 status)
{
	struct sk_buff *msg;

	pr_debug("%s\n", __func__);

	msg = ieee802154_nl_create(0, IEEE802154_START_CONF);
	if (!msg)
		return -ENOBUFS;

	if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
	    nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
	    nla_put(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
		    dev->dev_addr) ||
	    nla_put_u8(msg, IEEE802154_ATTR_STATUS, status))
		goto nla_put_failure;
	return ieee802154_nl_mcast(msg, IEEE802154_COORD_MCGRP);

nla_put_failure:
	nlmsg_free(msg);
	return -ENOBUFS;
}

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11.61%
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Alexander Aring
1
0.89%
1
25.00%
Johannes Berg
1
0.89%
1
25.00%
Total
112
100.00%
4
100.00%



static int ieee802154_nl_fill_iface(struct sk_buff *msg, u32 portid,
				    u32 seq, int flags, struct net_device *dev)
{
	void *hdr;
	struct wpan_phy *phy;
	struct ieee802154_mlme_ops *ops;
	__le16 short_addr, pan_id;

	pr_debug("%s\n", __func__);

	hdr = genlmsg_put(msg, 0, seq, &nl802154_family, flags,
			  IEEE802154_LIST_IFACE);
	if (!hdr)
		goto out;

	ops = ieee802154_mlme_ops(dev);
	phy = dev->ieee802154_ptr->wpan_phy;
	BUG_ON(!phy);
	get_device(&phy->dev);

	rtnl_lock();
	short_addr = dev->ieee802154_ptr->short_addr;
	pan_id = dev->ieee802154_ptr->pan_id;
	rtnl_unlock();

	if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
	    nla_put_string(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy)) ||
	    nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
	    nla_put(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
		    dev->dev_addr) ||
	    nla_put_shortaddr(msg, IEEE802154_ATTR_SHORT_ADDR, short_addr) ||
	    nla_put_shortaddr(msg, IEEE802154_ATTR_PAN_ID, pan_id))
		goto nla_put_failure;

	if (ops->get_mac_params) {
		struct ieee802154_mac_params params;

		rtnl_lock();
		ops->get_mac_params(dev, &params);
		rtnl_unlock();

		if (nla_put_s8(msg, IEEE802154_ATTR_TXPOWER,
			       params.transmit_power / 100) ||
		    nla_put_u8(msg, IEEE802154_ATTR_LBT_ENABLED, params.lbt) ||
		    nla_put_u8(msg, IEEE802154_ATTR_CCA_MODE,
			       params.cca.mode) ||
		    nla_put_s32(msg, IEEE802154_ATTR_CCA_ED_LEVEL,
				params.cca_ed_level / 100) ||
		    nla_put_u8(msg, IEEE802154_ATTR_CSMA_RETRIES,
			       params.csma_retries) ||
		    nla_put_u8(msg, IEEE802154_ATTR_CSMA_MIN_BE,
			       params.min_be) ||
		    nla_put_u8(msg, IEEE802154_ATTR_CSMA_MAX_BE,
			       params.max_be) ||
		    nla_put_s8(msg, IEEE802154_ATTR_FRAME_RETRIES,
			       params.frame_retries))
			goto nla_put_failure;
	}

	wpan_phy_put(phy);
	genlmsg_end(msg, hdr);
	return 0;

nla_put_failure:
	wpan_phy_put(phy);
	genlmsg_cancel(msg, hdr);
out:
	return -EMSGSIZE;
}

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39
10.83%
6
42.86%
David S. Miller
15
4.17%
1
7.14%
Johannes Berg
3
0.83%
1
7.14%
Eric W. Biedermann
1
0.28%
1
7.14%
Total
360
100.00%
14
100.00%

/* Requests from userspace */


static struct net_device *ieee802154_nl_get_dev(struct genl_info *info)
{
	struct net_device *dev;

	if (info->attrs[IEEE802154_ATTR_DEV_NAME]) {
		char name[IFNAMSIZ + 1];

		nla_strlcpy(name, info->attrs[IEEE802154_ATTR_DEV_NAME],
			    sizeof(name));
		dev = dev_get_by_name(&init_net, name);
	} else if (info->attrs[IEEE802154_ATTR_DEV_INDEX]) {
		dev = dev_get_by_index(&init_net,
			nla_get_u32(info->attrs[IEEE802154_ATTR_DEV_INDEX]));
	} else {
		return NULL;
	}

	if (!dev)
		return NULL;

	if (dev->type != ARPHRD_IEEE802154) {
		dev_put(dev);
		return NULL;
	}

	return dev;
}

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100.00%
2
100.00%



int ieee802154_associate_req(struct sk_buff *skb, struct genl_info *info)
{
	struct net_device *dev;
	struct ieee802154_addr addr;
	u8 page;
	int ret = -EOPNOTSUPP;

	if (!info->attrs[IEEE802154_ATTR_CHANNEL] ||
	    !info->attrs[IEEE802154_ATTR_COORD_PAN_ID] ||
	    (!info->attrs[IEEE802154_ATTR_COORD_HW_ADDR] &&
		!info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR]) ||
	    !info->attrs[IEEE802154_ATTR_CAPABILITY])
		return -EINVAL;

	dev = ieee802154_nl_get_dev(info);
	if (!dev)
		return -ENODEV;
	if (!ieee802154_mlme_ops(dev)->assoc_req)
		goto out;

	if (info->attrs[IEEE802154_ATTR_COORD_HW_ADDR]) {
		addr.mode = IEEE802154_ADDR_LONG;
		addr.extended_addr = nla_get_hwaddr(
				info->attrs[IEEE802154_ATTR_COORD_HW_ADDR]);
	} else {
		addr.mode = IEEE802154_ADDR_SHORT;
		addr.short_addr = nla_get_shortaddr(
				info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR]);
	}
	addr.pan_id = nla_get_shortaddr(
			info->attrs[IEEE802154_ATTR_COORD_PAN_ID]);

	if (info->attrs[IEEE802154_ATTR_PAGE])
		page = nla_get_u8(info->attrs[IEEE802154_ATTR_PAGE]);
	else
		page = 0;

	ret = ieee802154_mlme_ops(dev)->assoc_req(dev, &addr,
			nla_get_u8(info->attrs[IEEE802154_ATTR_CHANNEL]),
			page,
			nla_get_u8(info->attrs[IEEE802154_ATTR_CAPABILITY]));

out:
	dev_put(dev);
	return ret;
}

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9
3.59%
1
33.33%
Total
251
100.00%
3
100.00%



int ieee802154_associate_resp(struct sk_buff *skb, struct genl_info *info)
{
	struct net_device *dev;
	struct ieee802154_addr addr;
	int ret = -EOPNOTSUPP;

	if (!info->attrs[IEEE802154_ATTR_STATUS] ||
	    !info->attrs[IEEE802154_ATTR_DEST_HW_ADDR] ||
	    !info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR])
		return -EINVAL;

	dev = ieee802154_nl_get_dev(info);
	if (!dev)
		return -ENODEV;
	if (!ieee802154_mlme_ops(dev)->assoc_resp)
		goto out;

	addr.mode = IEEE802154_ADDR_LONG;
	addr.extended_addr = nla_get_hwaddr(
			info->attrs[IEEE802154_ATTR_DEST_HW_ADDR]);
	rtnl_lock();
	addr.pan_id = dev->ieee802154_ptr->pan_id;
	rtnl_unlock();

	ret = ieee802154_mlme_ops(dev)->assoc_resp(dev, &addr,
		nla_get_shortaddr(info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]),
		nla_get_u8(info->attrs[IEEE802154_ATTR_STATUS]));

out:
	dev_put(dev);
	return ret;
}

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9.41%
1
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Alexander Aring
9
5.29%
1
25.00%
Phoebe Buckheister
7
4.12%
1
25.00%
Total
170
100.00%
4
100.00%



int ieee802154_disassociate_req(struct sk_buff *skb, struct genl_info *info)
{
	struct net_device *dev;
	struct ieee802154_addr addr;
	int ret = -EOPNOTSUPP;

	if ((!info->attrs[IEEE802154_ATTR_DEST_HW_ADDR] &&
	    !info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]) ||
	    !info->attrs[IEEE802154_ATTR_REASON])
		return -EINVAL;

	dev = ieee802154_nl_get_dev(info);
	if (!dev)
		return -ENODEV;
	if (!ieee802154_mlme_ops(dev)->disassoc_req)
		goto out;

	if (info->attrs[IEEE802154_ATTR_DEST_HW_ADDR]) {
		addr.mode = IEEE802154_ADDR_LONG;
		addr.extended_addr = nla_get_hwaddr(
				info->attrs[IEEE802154_ATTR_DEST_HW_ADDR]);
	} else {
		addr.mode = IEEE802154_ADDR_SHORT;
		addr.short_addr = nla_get_shortaddr(
				info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]);
	}
	rtnl_lock();
	addr.pan_id = dev->ieee802154_ptr->pan_id;
	rtnl_unlock();

	ret = ieee802154_mlme_ops(dev)->disassoc_req(dev, &addr,
			nla_get_u8(info->attrs[IEEE802154_ATTR_REASON]));

out:
	dev_put(dev);
	return ret;
}

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8.16%
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9
4.59%
1
25.00%
Phoebe Buckheister
8
4.08%
1
25.00%
Total
196
100.00%
4
100.00%

/* PANid, channel, beacon_order = 15, superframe_order = 15,
 * PAN_coordinator, battery_life_extension = 0,
 * coord_realignment = 0, security_enable = 0
*/


int ieee802154_start_req(struct sk_buff *skb, struct genl_info *info)
{
	struct net_device *dev;
	struct ieee802154_addr addr;

	u8 channel, bcn_ord, sf_ord;
	u8 page;
	int pan_coord, blx, coord_realign;
	int ret = -EBUSY;

	if (!info->attrs[IEEE802154_ATTR_COORD_PAN_ID] ||
	    !info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR] ||
	    !info->attrs[IEEE802154_ATTR_CHANNEL] ||
	    !info->attrs[IEEE802154_ATTR_BCN_ORD] ||
	    !info->attrs[IEEE802154_ATTR_SF_ORD] ||
	    !info->attrs[IEEE802154_ATTR_PAN_COORD] ||
	    !info->attrs[IEEE802154_ATTR_BAT_EXT] ||
	    !info->attrs[IEEE802154_ATTR_COORD_REALIGN]
	 )
		return -EINVAL;

	dev = ieee802154_nl_get_dev(info);
	if (!dev)
		return -ENODEV;

	if (netif_running(dev))
		goto out;

	if (!ieee802154_mlme_ops(dev)->start_req) {
		ret = -EOPNOTSUPP;
		goto out;
	}

	addr.mode = IEEE802154_ADDR_SHORT;
	addr.short_addr = nla_get_shortaddr(
			info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR]);
	addr.pan_id = nla_get_shortaddr(
			info->attrs[IEEE802154_ATTR_COORD_PAN_ID]);

	channel = nla_get_u8(info->attrs[IEEE802154_ATTR_CHANNEL]);
	bcn_ord = nla_get_u8(info->attrs[IEEE802154_ATTR_BCN_ORD]);
	sf_ord = nla_get_u8(info->attrs[IEEE802154_ATTR_SF_ORD]);
	pan_coord = nla_get_u8(info->attrs[IEEE802154_ATTR_PAN_COORD]);
	blx = nla_get_u8(info->attrs[IEEE802154_ATTR_BAT_EXT]);
	coord_realign = nla_get_u8(info->attrs[IEEE802154_ATTR_COORD_REALIGN]);

	if (info->attrs[IEEE802154_ATTR_PAGE])
		page = nla_get_u8(info->attrs[IEEE802154_ATTR_PAGE]);
	else
		page = 0;

	if (addr.short_addr == cpu_to_le16(IEEE802154_ADDR_BROADCAST)) {
		ieee802154_nl_start_confirm(dev, IEEE802154_NO_SHORT_ADDRESS);
		dev_put(dev);
		return -EINVAL;
	}

	rtnl_lock();
	ret = ieee802154_mlme_ops(dev)->start_req(dev, &addr, channel, page,
		bcn_ord, sf_ord, pan_coord, blx, coord_realign);
	rtnl_unlock();

	/* FIXME: add validation for unused parameters to be sane
         * for SoftMAC
         */
	ieee802154_nl_start_confirm(dev, IEEE802154_SUCCESS);

out:
	dev_put(dev);
	return ret;
}

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32
8.49%
3
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17
4.51%
1
16.67%
Phoebe Buckheister
7
1.86%
1
16.67%
Total
377
100.00%
6
100.00%



int ieee802154_scan_req(struct sk_buff *skb, struct genl_info *info)
{
	struct net_device *dev;
	int ret = -EOPNOTSUPP;
	u8 type;
	u32 channels;
	u8 duration;
	u8 page;

	if (!info->attrs[IEEE802154_ATTR_SCAN_TYPE] ||
	    !info->attrs[IEEE802154_ATTR_CHANNELS] ||
	    !info->attrs[IEEE802154_ATTR_DURATION])
		return -EINVAL;

	dev = ieee802154_nl_get_dev(info);
	if (!dev)
		return -ENODEV;
	if (!ieee802154_mlme_ops(dev)->scan_req)
		goto out;

	type = nla_get_u8(info->attrs[IEEE802154_ATTR_SCAN_TYPE]);
	channels = nla_get_u32(info->attrs[IEEE802154_ATTR_CHANNELS]);
	duration = nla_get_u8(info->attrs[IEEE802154_ATTR_DURATION]);

	if (info->attrs[IEEE802154_ATTR_PAGE])
		page = nla_get_u8(info->attrs[IEEE802154_ATTR_PAGE]);
	else
		page = 0;

	ret = ieee802154_mlme_ops(dev)->scan_req(dev, type, channels,
						 page, duration);

out:
	dev_put(dev);
	return ret;
}

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189
100.00%
2
100.00%



int ieee802154_list_iface(struct sk_buff *skb, struct genl_info *info)
{
	/* Request for interface name, index, type, IEEE address,
         * PAN Id, short address
         */
	struct sk_buff *msg;
	struct net_device *dev = NULL;
	int rc = -ENOBUFS;

	pr_debug("%s\n", __func__);

	dev = ieee802154_nl_get_dev(info);
	if (!dev)
		return -ENODEV;

	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
	if (!msg)
		goto out_dev;

	rc = ieee802154_nl_fill_iface(msg, info->snd_portid, info->snd_seq,
				      0, dev);
	if (rc < 0)
		goto out_free;

	dev_put(dev);

	return genlmsg_reply(msg, info);
out_free:
	nlmsg_free(msg);
out_dev:
	dev_put(dev);
	return rc;
}

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0.76%
1
25.00%
Thomas Graf
1
0.76%
1
25.00%
Eric W. Biedermann
1
0.76%
1
25.00%
Total
132
100.00%
4
100.00%



int ieee802154_dump_iface(struct sk_buff *skb, struct netlink_callback *cb)
{
	struct net *net = sock_net(skb->sk);
	struct net_device *dev;
	int idx;
	int s_idx = cb->args[0];

	pr_debug("%s\n", __func__);

	idx = 0;
	for_each_netdev(net, dev) {
		if (idx < s_idx || dev->type != ARPHRD_IEEE802154)
			goto cont;

		if (ieee802154_nl_fill_iface(skb, NETLINK_CB(cb->skb).portid,
					     cb->nlh->nlmsg_seq,
					     NLM_F_MULTI, dev) < 0)
			break;
cont:
		idx++;
	}
	cb->args[0] = idx;

	return skb->len;
}

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127
100.00%
2
100.00%



int ieee802154_set_macparams(struct sk_buff *skb, struct genl_info *info)
{
	struct net_device *dev = NULL;
	struct ieee802154_mlme_ops *ops;
	struct ieee802154_mac_params params;
	struct wpan_phy *phy;
	int rc = -EINVAL;

	pr_debug("%s\n", __func__);

	dev = ieee802154_nl_get_dev(info);
	if (!dev)
		return -ENODEV;

	ops = ieee802154_mlme_ops(dev);

	if (!ops->get_mac_params || !ops->set_mac_params) {
		rc = -EOPNOTSUPP;
		goto out;
	}

	if (netif_running(dev)) {
		rc = -EBUSY;
		goto out;
	}

	if (!info->attrs[IEEE802154_ATTR_LBT_ENABLED] &&
	    !info->attrs[IEEE802154_ATTR_CCA_MODE] &&
	    !info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL] &&
	    !info->attrs[IEEE802154_ATTR_CSMA_RETRIES] &&
	    !info->attrs[IEEE802154_ATTR_CSMA_MIN_BE] &&
	    !info->attrs[IEEE802154_ATTR_CSMA_MAX_BE] &&
	    !info->attrs[IEEE802154_ATTR_FRAME_RETRIES])
		goto out;

	phy = dev->ieee802154_ptr->wpan_phy;
	get_device(&phy->dev);

	rtnl_lock();
	ops->get_mac_params(dev, &params);

	if (info->attrs[IEEE802154_ATTR_TXPOWER])
		params.transmit_power = nla_get_s8(info->attrs[IEEE802154_ATTR_TXPOWER]) * 100;

	if (info->attrs[IEEE802154_ATTR_LBT_ENABLED])
		params.lbt = nla_get_u8(info->attrs[IEEE802154_ATTR_LBT_ENABLED]);

	if (info->attrs[IEEE802154_ATTR_CCA_MODE])
		params.cca.mode = nla_get_u8(info->attrs[IEEE802154_ATTR_CCA_MODE]);

	if (info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL])
		params.cca_ed_level = nla_get_s32(info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL]) * 100;

	if (info->attrs[IEEE802154_ATTR_CSMA_RETRIES])
		params.csma_retries = nla_get_u8(info->attrs[IEEE802154_ATTR_CSMA_RETRIES]);

	if (info->attrs[IEEE802154_ATTR_CSMA_MIN_BE])
		params.min_be = nla_get_u8(info->attrs[IEEE802154_ATTR_CSMA_MIN_BE]);

	if (info->attrs[IEEE802154_ATTR_CSMA_MAX_BE])
		params.max_be = nla_get_u8(info->attrs[IEEE802154_ATTR_CSMA_MAX_BE]);

	if (info->attrs[IEEE802154_ATTR_FRAME_RETRIES])
		params.frame_retries = nla_get_s8(info->attrs[IEEE802154_ATTR_FRAME_RETRIES]);

	rc = ops->set_mac_params(dev, &params);
	rtnl_unlock();

	wpan_phy_put(phy);
	dev_put(dev);

	return 0;

out:
	dev_put(dev);
	return rc;
}

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static int

ieee802154_llsec_parse_key_id(struct genl_info *info,
			      struct ieee802154_llsec_key_id *desc)
{
	memset(desc, 0, sizeof(*desc));

	if (!info->attrs[IEEE802154_ATTR_LLSEC_KEY_MODE])
		return -EINVAL;

	desc->mode = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_KEY_MODE]);

	if (desc->mode == IEEE802154_SCF_KEY_IMPLICIT) {
		if (!info->attrs[IEEE802154_ATTR_PAN_ID] &&
		    !(info->attrs[IEEE802154_ATTR_SHORT_ADDR] ||
		      info->attrs[IEEE802154_ATTR_HW_ADDR]))
			return -EINVAL;

		desc->device_addr.pan_id = nla_get_shortaddr(info->attrs[IEEE802154_ATTR_PAN_ID]);

		if (info->attrs[IEEE802154_ATTR_SHORT_ADDR]) {
			desc->device_addr.mode = IEEE802154_ADDR_SHORT;
			desc->device_addr.short_addr = nla_get_shortaddr(info->attrs[IEEE802154_ATTR_SHORT_ADDR]);
		} else {
			desc->device_addr.mode = IEEE802154_ADDR_LONG;
			desc->device_addr.extended_addr = nla_get_hwaddr(info->attrs[IEEE802154_ATTR_HW_ADDR]);
		}
	}

	if (desc->mode != IEEE802154_SCF_KEY_IMPLICIT &&
	    !info->attrs[IEEE802154_ATTR_LLSEC_KEY_ID])
		return -EINVAL;

	if (desc->mode == IEEE802154_SCF_KEY_SHORT_INDEX &&
	    !info->attrs[IEEE802154_ATTR_LLSEC_KEY_SOURCE_SHORT])
		return -EINVAL;

	if (desc->mode == IEEE802154_SCF_KEY_HW_INDEX &&
	    !info->attrs[IEEE802154_ATTR_LLSEC_KEY_SOURCE_EXTENDED])
		return -EINVAL;

	if (desc->mode != IEEE802154_SCF_KEY_IMPLICIT)
		desc->id = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_KEY_ID]);

	switch (desc->mode) {
	case IEEE802154_SCF_KEY_SHORT_INDEX:
	{
		u32 source = nla_get_u32(info->attrs[IEEE802154_ATTR_LLSEC_KEY_SOURCE_SHORT]);

		desc->short_source = cpu_to_le32(source);
		break;
	}
	case IEEE802154_SCF_KEY_HW_INDEX:
		desc->extended_source = nla_get_hwaddr(info->attrs[IEEE802154_ATTR_LLSEC_KEY_SOURCE_EXTENDED]);
		break;
	}

	return 0;
}

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static int

ieee802154_llsec_fill_key_id(struct sk_buff *msg,
			     const struct ieee802154_llsec_key_id *desc)
{
	if (nla_put_u8(msg, IEEE802154_ATTR_LLSEC_KEY_MODE, desc->mode))
		return -EMSGSIZE;

	if (desc->mode == IEEE802154_SCF_KEY_IMPLICIT) {