[mirror_ubuntu-bionic-kernel.git] / net / ieee802154 / nl-phy.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/kernel.h>
#include <linux/slab.h>
#include <linux/if_arp.h>
#include <net/netlink.h>
#include <net/genetlink.h>
#include <net/cfg802154.h>
#include <net/af_ieee802154.h>
#include <net/ieee802154_netdev.h>
#include <net/rtnetlink.h> /* for rtnl_{un,}lock */
#include <linux/nl802154.h>

#include "ieee802154.h"
#include "rdev-ops.h"
#include "core.h"

static int ieee802154_nl_fill_phy(struct sk_buff *msg, u32 portid,
				  u32 seq, int flags, struct wpan_phy *phy)
{
	void *hdr;
	int i, pages = 0;
	uint32_t *buf = kzalloc(32 * sizeof(uint32_t), GFP_KERNEL);

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

	if (!buf)
		return -EMSGSIZE;

	hdr = genlmsg_put(msg, 0, seq, &nl802154_family, flags,
			  IEEE802154_LIST_PHY);
	if (!hdr)
		goto out;

	rtnl_lock();
	if (nla_put_string(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy)) ||
	    nla_put_u8(msg, IEEE802154_ATTR_PAGE, phy->current_page) ||
	    nla_put_u8(msg, IEEE802154_ATTR_CHANNEL, phy->current_channel))
		goto nla_put_failure;
	for (i = 0; i < 32; i++) {
		if (phy->supported.channels[i])
			buf[pages++] = phy->supported.channels[i] | (i << 27);
	}
	if (pages &&
	    nla_put(msg, IEEE802154_ATTR_CHANNEL_PAGE_LIST,
		    pages * sizeof(uint32_t), buf))
		goto nla_put_failure;
	rtnl_unlock();
	kfree(buf);
	genlmsg_end(msg, hdr);
	return 0;

nla_put_failure:
	rtnl_unlock();
	genlmsg_cancel(msg, hdr);
out:
	kfree(buf);
	return -EMSGSIZE;
}

int ieee802154_list_phy(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 wpan_phy *phy;
	const char *name;
	int rc = -ENOBUFS;

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

	if (!info->attrs[IEEE802154_ATTR_PHY_NAME])
		return -EINVAL;

	name = nla_data(info->attrs[IEEE802154_ATTR_PHY_NAME]);
	if (name[nla_len(info->attrs[IEEE802154_ATTR_PHY_NAME]) - 1] != '\0')
		return -EINVAL; /* phy name should be null-terminated */

	phy = wpan_phy_find(name);
	if (!phy)
		return -ENODEV;

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

	rc = ieee802154_nl_fill_phy(msg, info->snd_portid, info->snd_seq,
				    0, phy);
	if (rc < 0)
		goto out_free;

	wpan_phy_put(phy);

	return genlmsg_reply(msg, info);
out_free:
	nlmsg_free(msg);
out_dev:
	wpan_phy_put(phy);
	return rc;
}

struct dump_phy_data {
	struct sk_buff *skb;
	struct netlink_callback *cb;
	int idx, s_idx;
};

static int ieee802154_dump_phy_iter(struct wpan_phy *phy, void *_data)
{
	int rc;
	struct dump_phy_data *data = _data;

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

	if (data->idx++ < data->s_idx)
		return 0;

	rc = ieee802154_nl_fill_phy(data->skb,
				    NETLINK_CB(data->cb->skb).portid,
				    data->cb->nlh->nlmsg_seq,
				    NLM_F_MULTI,
				    phy);

	if (rc < 0) {
		data->idx--;
		return rc;
	}

	return 0;
}

int ieee802154_dump_phy(struct sk_buff *skb, struct netlink_callback *cb)
{
	struct dump_phy_data data = {
		.cb = cb,
		.skb = skb,
		.s_idx = cb->args[0],
		.idx = 0,
	};

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

	wpan_phy_for_each(ieee802154_dump_phy_iter, &data);

	cb->args[0] = data.idx;

	return skb->len;
}

int ieee802154_add_iface(struct sk_buff *skb, struct genl_info *info)
{
	struct sk_buff *msg;
	struct wpan_phy *phy;
	const char *name;
	const char *devname;
	int rc = -ENOBUFS;
	struct net_device *dev;
	int type = __IEEE802154_DEV_INVALID;
	unsigned char name_assign_type;

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

	if (!info->attrs[IEEE802154_ATTR_PHY_NAME])
		return -EINVAL;

	name = nla_data(info->attrs[IEEE802154_ATTR_PHY_NAME]);
	if (name[nla_len(info->attrs[IEEE802154_ATTR_PHY_NAME]) - 1] != '\0')
		return -EINVAL; /* phy name should be null-terminated */

	if (info->attrs[IEEE802154_ATTR_DEV_NAME]) {
		devname = nla_data(info->attrs[IEEE802154_ATTR_DEV_NAME]);
		if (devname[nla_len(info->attrs[IEEE802154_ATTR_DEV_NAME]) - 1]
				!= '\0')
			return -EINVAL; /* phy name should be null-terminated */
		name_assign_type = NET_NAME_USER;
	} else  {
		devname = "wpan%d";
		name_assign_type = NET_NAME_ENUM;
	}

	if (strlen(devname) >= IFNAMSIZ)
		return -ENAMETOOLONG;

	phy = wpan_phy_find(name);
	if (!phy)
		return -ENODEV;

	msg = ieee802154_nl_new_reply(info, 0, IEEE802154_ADD_IFACE);
	if (!msg)
		goto out_dev;

	if (info->attrs[IEEE802154_ATTR_HW_ADDR] &&
	    nla_len(info->attrs[IEEE802154_ATTR_HW_ADDR]) !=
			IEEE802154_ADDR_LEN) {
		rc = -EINVAL;
		goto nla_put_failure;
	}

	if (info->attrs[IEEE802154_ATTR_DEV_TYPE]) {
		type = nla_get_u8(info->attrs[IEEE802154_ATTR_DEV_TYPE]);
		if (type >= __IEEE802154_DEV_MAX) {
			rc = -EINVAL;
			goto nla_put_failure;
		}
	}

	dev = rdev_add_virtual_intf_deprecated(wpan_phy_to_rdev(phy), devname,
					       name_assign_type, type);
	if (IS_ERR(dev)) {
		rc = PTR_ERR(dev);
		goto nla_put_failure;
	}
	dev_hold(dev);

	if (info->attrs[IEEE802154_ATTR_HW_ADDR]) {
		struct sockaddr addr;

		addr.sa_family = ARPHRD_IEEE802154;
		nla_memcpy(&addr.sa_data, info->attrs[IEEE802154_ATTR_HW_ADDR],
			   IEEE802154_ADDR_LEN);

		/* strangely enough, some callbacks (inetdev_event) from
		 * dev_set_mac_address require RTNL_LOCK
		 */
		rtnl_lock();
		rc = dev_set_mac_address(dev, &addr);
		rtnl_unlock();
		if (rc)
			goto dev_unregister;
	}

	if (nla_put_string(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy)) ||
	    nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name))
		goto nla_put_failure;
	dev_put(dev);

	wpan_phy_put(phy);

	return ieee802154_nl_reply(msg, info);

dev_unregister:
	rtnl_lock(); /* del_iface must be called with RTNL lock */
	rdev_del_virtual_intf_deprecated(wpan_phy_to_rdev(phy), dev);
	dev_put(dev);
	rtnl_unlock();
nla_put_failure:
	nlmsg_free(msg);
out_dev:
	wpan_phy_put(phy);
	return rc;
}

int ieee802154_del_iface(struct sk_buff *skb, struct genl_info *info)
{
	struct sk_buff *msg;
	struct wpan_phy *phy;
	const char *name;
	int rc;
	struct net_device *dev;

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

	if (!info->attrs[IEEE802154_ATTR_DEV_NAME])
		return -EINVAL;

	name = nla_data(info->attrs[IEEE802154_ATTR_DEV_NAME]);
	if (name[nla_len(info->attrs[IEEE802154_ATTR_DEV_NAME]) - 1] != '\0')
		return -EINVAL; /* name should be null-terminated */

	rc = -ENODEV;
	dev = dev_get_by_name(genl_info_net(info), name);
	if (!dev)
		return rc;
	if (dev->type != ARPHRD_IEEE802154)
		goto out;

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

	rc = -EINVAL;
	/* phy name is optional, but should be checked if it's given */
	if (info->attrs[IEEE802154_ATTR_PHY_NAME]) {
		struct wpan_phy *phy2;

		const char *pname =
			nla_data(info->attrs[IEEE802154_ATTR_PHY_NAME]);
		if (pname[nla_len(info->attrs[IEEE802154_ATTR_PHY_NAME]) - 1]
				!= '\0')
			/* name should be null-terminated */
			goto out_dev;

		phy2 = wpan_phy_find(pname);
		if (!phy2)
			goto out_dev;

		if (phy != phy2) {
			wpan_phy_put(phy2);
			goto out_dev;
		}
	}

	rc = -ENOBUFS;

	msg = ieee802154_nl_new_reply(info, 0, IEEE802154_DEL_IFACE);
	if (!msg)
		goto out_dev;

	rtnl_lock();
	rdev_del_virtual_intf_deprecated(wpan_phy_to_rdev(phy), dev);

	/* We don't have device anymore */
	dev_put(dev);
	dev = NULL;

	rtnl_unlock();

	if (nla_put_string(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy)) ||
	    nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, name))
		goto nla_put_failure;
	wpan_phy_put(phy);

	return ieee802154_nl_reply(msg, info);

nla_put_failure:
	nlmsg_free(msg);
out_dev:
	wpan_phy_put(phy);
out:
	if (dev)
		dev_put(dev);

	return rc;
}
Commit	Line	Data
1eaa9d03	1	/*
69bb631e	2	* Netlink interface for IEEE 802.15.4 stack
1eaa9d03 DES	3	*
	4	* Copyright 2007, 2008 Siemens AG
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2
	8	* as published by the Free Software Foundation.
	9	*
	10	* This program is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	* GNU General Public License for more details.
	14	*
1eaa9d03 DES	15	* Written by:
	16	* Sergey Lapin <slapin@ossfans.org>
	17	* Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
	18	* Maxim Osipov <maxim.osipov@siemens.com>
	19	*/
	20
	21	#include <linux/kernel.h>
5a0e3ad6	22	#include <linux/slab.h>
060e4179	23	#include <linux/if_arp.h>
1eaa9d03 DES	24	#include <net/netlink.h>
1eaa9d03 DES	25	#include <net/genetlink.h>
5ad60d36	26	#include <net/cfg802154.h>
bb1cafb8 DES	27	#include <net/af_ieee802154.h>
	28	#include <net/ieee802154_netdev.h>
	29	#include <net/rtnetlink.h> /* for rtnl_{un,}lock */
1eaa9d03 DES	30	#include <linux/nl802154.h>
	31
	32	#include "ieee802154.h"
4a9a816a AA	33	#include "rdev-ops.h"
4a9a816a AA	34	#include "core.h"
1eaa9d03	35
15e47304	36	static int ieee802154_nl_fill_phy(struct sk_buff *msg, u32 portid,
4710d806	37	u32 seq, int flags, struct wpan_phy *phy)
1eaa9d03 DES	38	{
	39	void *hdr;
	40	int i, pages = 0;
	41	uint32_t buf = kzalloc(32 sizeof(uint32_t), GFP_KERNEL);
	42
	43	pr_debug("%s\n", __func__);
	44
	45	if (!buf)
b9cabe52	46	return -EMSGSIZE;
1eaa9d03 DES	47
1eaa9d03 DES	48	hdr = genlmsg_put(msg, 0, seq, &nl802154_family, flags,
4710d806	49	IEEE802154_LIST_PHY);
1eaa9d03 DES	50	if (!hdr)
	51	goto out;
	52
4a3a8c0c	53	rtnl_lock();
be51da0f DM	54	if (nla_put_string(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy)) \|\|
	55	nla_put_u8(msg, IEEE802154_ATTR_PAGE, phy->current_page) \|\|
	56	nla_put_u8(msg, IEEE802154_ATTR_CHANNEL, phy->current_channel))
	57	goto nla_put_failure;
1eaa9d03	58	for (i = 0; i < 32; i++) {
72f655e4 AA	59	if (phy->supported.channels[i])
72f655e4 AA	60	buf[pages++] = phy->supported.channels[i] \| (i << 27);
1eaa9d03	61	}
be51da0f DM	62	if (pages &&
	63	nla_put(msg, IEEE802154_ATTR_CHANNEL_PAGE_LIST,
	64	pages * sizeof(uint32_t), buf))
	65	goto nla_put_failure;
4a3a8c0c	66	rtnl_unlock();
b9cabe52	67	kfree(buf);
053c095a JB	68	genlmsg_end(msg, hdr);
053c095a JB	69	return 0;
1eaa9d03 DES	70
1eaa9d03 DES	71	nla_put_failure:
4a3a8c0c	72	rtnl_unlock();
1eaa9d03 DES	73	genlmsg_cancel(msg, hdr);
	74	out:
	75	kfree(buf);
	76	return -EMSGSIZE;
	77	}
	78
1c582d91	79	int ieee802154_list_phy(struct sk_buff skb, struct genl_info info)
1eaa9d03 DES	80	{
1eaa9d03 DES	81	/* Request for interface name, index, type, IEEE address,
4710d806 VB	82	* PAN Id, short address
4710d806 VB	83	*/
1eaa9d03 DES	84	struct sk_buff *msg;
	85	struct wpan_phy *phy;
	86	const char *name;
	87	int rc = -ENOBUFS;
	88
	89	pr_debug("%s\n", __func__);
	90
	91	if (!info->attrs[IEEE802154_ATTR_PHY_NAME])
	92	return -EINVAL;
	93
	94	name = nla_data(info->attrs[IEEE802154_ATTR_PHY_NAME]);
	95	if (name[nla_len(info->attrs[IEEE802154_ATTR_PHY_NAME]) - 1] != '\0')
	96	return -EINVAL; /* phy name should be null-terminated */
	97
1eaa9d03 DES	98	phy = wpan_phy_find(name);
	99	if (!phy)
	100	return -ENODEV;
	101
58050fce	102	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1eaa9d03 DES	103	if (!msg)
	104	goto out_dev;
	105
15e47304	106	rc = ieee802154_nl_fill_phy(msg, info->snd_portid, info->snd_seq,
4710d806	107	0, phy);
1eaa9d03 DES	108	if (rc < 0)
	109	goto out_free;
	110
	111	wpan_phy_put(phy);
	112
	113	return genlmsg_reply(msg, info);
	114	out_free:
	115	nlmsg_free(msg);
	116	out_dev:
	117	wpan_phy_put(phy);
	118	return rc;
1eaa9d03 DES	119	}
	120
	121	struct dump_phy_data {
	122	struct sk_buff *skb;
	123	struct netlink_callback *cb;
	124	int idx, s_idx;
	125	};
	126
	127	static int ieee802154_dump_phy_iter(struct wpan_phy phy, void _data)
	128	{
	129	int rc;
	130	struct dump_phy_data *data = _data;
	131
	132	pr_debug("%s\n", __func__);
	133
	134	if (data->idx++ < data->s_idx)
	135	return 0;
	136
	137	rc = ieee802154_nl_fill_phy(data->skb,
4710d806 VB	138	NETLINK_CB(data->cb->skb).portid,
	139	data->cb->nlh->nlmsg_seq,
	140	NLM_F_MULTI,
	141	phy);
1eaa9d03 DES	142
	143	if (rc < 0) {
	144	data->idx--;
	145	return rc;
	146	}
	147
	148	return 0;
	149	}
	150
1c582d91	151	int ieee802154_dump_phy(struct sk_buff skb, struct netlink_callback cb)
1eaa9d03 DES	152	{
	153	struct dump_phy_data data = {
	154	.cb = cb,
	155	.skb = skb,
	156	.s_idx = cb->args[0],
	157	.idx = 0,
	158	};
	159
	160	pr_debug("%s\n", __func__);
	161
	162	wpan_phy_for_each(ieee802154_dump_phy_iter, &data);
	163
	164	cb->args[0] = data.idx;
	165
	166	return skb->len;
	167	}
	168
1c582d91	169	int ieee802154_add_iface(struct sk_buff skb, struct genl_info info)
bb1cafb8 DES	170	{
	171	struct sk_buff *msg;
	172	struct wpan_phy *phy;
	173	const char *name;
	174	const char *devname;
	175	int rc = -ENOBUFS;
	176	struct net_device *dev;
90c049b2	177	int type = __IEEE802154_DEV_INVALID;
5b4a1039	178	unsigned char name_assign_type;
bb1cafb8 DES	179
	180	pr_debug("%s\n", __func__);
	181
	182	if (!info->attrs[IEEE802154_ATTR_PHY_NAME])
	183	return -EINVAL;
	184
	185	name = nla_data(info->attrs[IEEE802154_ATTR_PHY_NAME]);
	186	if (name[nla_len(info->attrs[IEEE802154_ATTR_PHY_NAME]) - 1] != '\0')
	187	return -EINVAL; /* phy name should be null-terminated */
	188
	189	if (info->attrs[IEEE802154_ATTR_DEV_NAME]) {
	190	devname = nla_data(info->attrs[IEEE802154_ATTR_DEV_NAME]);
	191	if (devname[nla_len(info->attrs[IEEE802154_ATTR_DEV_NAME]) - 1]
	192	!= '\0')
	193	return -EINVAL; /* phy name should be null-terminated */
5b4a1039	194	name_assign_type = NET_NAME_USER;
bb1cafb8 DES	195	} else {
bb1cafb8 DES	196	devname = "wpan%d";
5b4a1039	197	name_assign_type = NET_NAME_ENUM;
bb1cafb8 DES	198	}
	199
	200	if (strlen(devname) >= IFNAMSIZ)
	201	return -ENAMETOOLONG;
	202
	203	phy = wpan_phy_find(name);
	204	if (!phy)
	205	return -ENODEV;
	206
	207	msg = ieee802154_nl_new_reply(info, 0, IEEE802154_ADD_IFACE);
	208	if (!msg)
	209	goto out_dev;
	210
060e4179 DES	211	if (info->attrs[IEEE802154_ATTR_HW_ADDR] &&
	212	nla_len(info->attrs[IEEE802154_ATTR_HW_ADDR]) !=
	213	IEEE802154_ADDR_LEN) {
	214	rc = -EINVAL;
	215	goto nla_put_failure;
	216	}
	217
90c049b2	218	if (info->attrs[IEEE802154_ATTR_DEV_TYPE]) {
90c049b2	219	type = nla_get_u8(info->attrs[IEEE802154_ATTR_DEV_TYPE]);
267d29a6 CE	220	if (type >= __IEEE802154_DEV_MAX) {
	221	rc = -EINVAL;
	222	goto nla_put_failure;
	223	}
90c049b2	224	}
90c049b2	225
4a9a816a	226	dev = rdev_add_virtual_intf_deprecated(wpan_phy_to_rdev(phy), devname,
5b4a1039	227	name_assign_type, type);
bb1cafb8 DES	228	if (IS_ERR(dev)) {
	229	rc = PTR_ERR(dev);
	230	goto nla_put_failure;
	231	}
12cb56c2	232	dev_hold(dev);
bb1cafb8	233
060e4179 DES	234	if (info->attrs[IEEE802154_ATTR_HW_ADDR]) {
	235	struct sockaddr addr;
	236
	237	addr.sa_family = ARPHRD_IEEE802154;
	238	nla_memcpy(&addr.sa_data, info->attrs[IEEE802154_ATTR_HW_ADDR],
4710d806	239	IEEE802154_ADDR_LEN);
060e4179	240
4710d806	241	/* strangely enough, some callbacks (inetdev_event) from
060e4179 DES	242	* dev_set_mac_address require RTNL_LOCK
	243	*/
	244	rtnl_lock();
	245	rc = dev_set_mac_address(dev, &addr);
	246	rtnl_unlock();
	247	if (rc)
	248	goto dev_unregister;
	249	}
	250
be51da0f DM	251	if (nla_put_string(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy)) \|\|
	252	nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name))
	253	goto nla_put_failure;
bb1cafb8 DES	254	dev_put(dev);
	255
	256	wpan_phy_put(phy);
	257
	258	return ieee802154_nl_reply(msg, info);
	259
060e4179 DES	260	dev_unregister:
060e4179 DES	261	rtnl_lock(); /* del_iface must be called with RTNL lock */
4a9a816a	262	rdev_del_virtual_intf_deprecated(wpan_phy_to_rdev(phy), dev);
060e4179 DES	263	dev_put(dev);
060e4179 DES	264	rtnl_unlock();
bb1cafb8 DES	265	nla_put_failure:
	266	nlmsg_free(msg);
	267	out_dev:
	268	wpan_phy_put(phy);
	269	return rc;
	270	}
	271
1c582d91	272	int ieee802154_del_iface(struct sk_buff skb, struct genl_info info)
bb1cafb8 DES	273	{
	274	struct sk_buff *msg;
	275	struct wpan_phy *phy;
	276	const char *name;
	277	int rc;
	278	struct net_device *dev;
	279
	280	pr_debug("%s\n", __func__);
	281
	282	if (!info->attrs[IEEE802154_ATTR_DEV_NAME])
	283	return -EINVAL;
	284
	285	name = nla_data(info->attrs[IEEE802154_ATTR_DEV_NAME]);
	286	if (name[nla_len(info->attrs[IEEE802154_ATTR_DEV_NAME]) - 1] != '\0')
	287	return -EINVAL; /* name should be null-terminated */
	288
5b3211dc	289	rc = -ENODEV;
bb1cafb8 DES	290	dev = dev_get_by_name(genl_info_net(info), name);
bb1cafb8 DES	291	if (!dev)
5b3211dc	292	return rc;
	293	if (dev->type != ARPHRD_IEEE802154)
	294	goto out;
bb1cafb8	295
bd28a11f	296	phy = dev->ieee802154_ptr->wpan_phy;
bb1cafb8	297	BUG_ON(!phy);
bd28a11f	298	get_device(&phy->dev);
bb1cafb8 DES	299
	300	rc = -EINVAL;
	301	/* phy name is optional, but should be checked if it's given */
	302	if (info->attrs[IEEE802154_ATTR_PHY_NAME]) {
	303	struct wpan_phy *phy2;
	304
	305	const char *pname =
	306	nla_data(info->attrs[IEEE802154_ATTR_PHY_NAME]);
	307	if (pname[nla_len(info->attrs[IEEE802154_ATTR_PHY_NAME]) - 1]
	308	!= '\0')
	309	/* name should be null-terminated */
	310	goto out_dev;
	311
	312	phy2 = wpan_phy_find(pname);
	313	if (!phy2)
	314	goto out_dev;
	315
	316	if (phy != phy2) {
	317	wpan_phy_put(phy2);
	318	goto out_dev;
	319	}
	320	}
	321
	322	rc = -ENOBUFS;
	323
	324	msg = ieee802154_nl_new_reply(info, 0, IEEE802154_DEL_IFACE);
	325	if (!msg)
	326	goto out_dev;
	327
bb1cafb8	328	rtnl_lock();
4a9a816a	329	rdev_del_virtual_intf_deprecated(wpan_phy_to_rdev(phy), dev);
bb1cafb8 DES	330
	331	/* We don't have device anymore */
	332	dev_put(dev);
	333	dev = NULL;
	334
	335	rtnl_unlock();
	336
be51da0f DM	337	if (nla_put_string(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy)) \|\|
	338	nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, name))
	339	goto nla_put_failure;
bb1cafb8 DES	340	wpan_phy_put(phy);
	341
	342	return ieee802154_nl_reply(msg, info);
	343
	344	nla_put_failure:
	345	nlmsg_free(msg);
	346	out_dev:
	347	wpan_phy_put(phy);
5b3211dc	348	out:
bb1cafb8 DES	349	if (dev)
	350	dev_put(dev);
	351
	352	return rc;
	353	}