[linux-2.6-block.git] / net / ieee802154 / netlink.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Netlink interface for IEEE 802.15.4 stack
 *
 * Copyright 2007, 2008 Siemens AG
 *
 * 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/gfp.h>
#include <net/genetlink.h>
#include <linux/nl802154.h>

#include "ieee802154.h"

static unsigned int ieee802154_seq_num;
static DEFINE_SPINLOCK(ieee802154_seq_lock);

/* Requests to userspace */
struct sk_buff *ieee802154_nl_create(int flags, u8 req)
{
	void *hdr;
	struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
	unsigned long f;

	if (!msg)
		return NULL;

	spin_lock_irqsave(&ieee802154_seq_lock, f);
	hdr = genlmsg_put(msg, 0, ieee802154_seq_num++,
			  &nl802154_family, flags, req);
	spin_unlock_irqrestore(&ieee802154_seq_lock, f);
	if (!hdr) {
		nlmsg_free(msg);
		return NULL;
	}

	return msg;
}

int ieee802154_nl_mcast(struct sk_buff *msg, unsigned int group)
{
	struct nlmsghdr *nlh = nlmsg_hdr(msg);
	void *hdr = genlmsg_data(nlmsg_data(nlh));

	genlmsg_end(msg, hdr);

	return genlmsg_multicast(&nl802154_family, msg, 0, group, GFP_ATOMIC);
}

struct sk_buff *ieee802154_nl_new_reply(struct genl_info *info,
					int flags, u8 req)
{
	void *hdr;
	struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);

	if (!msg)
		return NULL;

	hdr = genlmsg_put_reply(msg, info,
				&nl802154_family, flags, req);
	if (!hdr) {
		nlmsg_free(msg);
		return NULL;
	}

	return msg;
}

int ieee802154_nl_reply(struct sk_buff *msg, struct genl_info *info)
{
	struct nlmsghdr *nlh = nlmsg_hdr(msg);
	void *hdr = genlmsg_data(nlmsg_data(nlh));

	genlmsg_end(msg, hdr);

	return genlmsg_reply(msg, info);
}

static const struct genl_ops ieee802154_ops[] = {
	/* see nl-phy.c */
	IEEE802154_DUMP(IEEE802154_LIST_PHY, ieee802154_list_phy,
			ieee802154_dump_phy),
	IEEE802154_OP(IEEE802154_ADD_IFACE, ieee802154_add_iface),
	IEEE802154_OP(IEEE802154_DEL_IFACE, ieee802154_del_iface),
	/* see nl-mac.c */
	IEEE802154_OP(IEEE802154_ASSOCIATE_REQ, ieee802154_associate_req),
	IEEE802154_OP(IEEE802154_ASSOCIATE_RESP, ieee802154_associate_resp),
	IEEE802154_OP(IEEE802154_DISASSOCIATE_REQ, ieee802154_disassociate_req),
	IEEE802154_OP(IEEE802154_SCAN_REQ, ieee802154_scan_req),
	IEEE802154_OP(IEEE802154_START_REQ, ieee802154_start_req),
	IEEE802154_DUMP(IEEE802154_LIST_IFACE, ieee802154_list_iface,
			ieee802154_dump_iface),
	IEEE802154_OP(IEEE802154_SET_MACPARAMS, ieee802154_set_macparams),
	IEEE802154_OP(IEEE802154_LLSEC_GETPARAMS, ieee802154_llsec_getparams),
	IEEE802154_OP(IEEE802154_LLSEC_SETPARAMS, ieee802154_llsec_setparams),
	IEEE802154_DUMP(IEEE802154_LLSEC_LIST_KEY, NULL,
			ieee802154_llsec_dump_keys),
	IEEE802154_OP(IEEE802154_LLSEC_ADD_KEY, ieee802154_llsec_add_key),
	IEEE802154_OP(IEEE802154_LLSEC_DEL_KEY, ieee802154_llsec_del_key),
	IEEE802154_DUMP(IEEE802154_LLSEC_LIST_DEV, NULL,
			ieee802154_llsec_dump_devs),
	IEEE802154_OP(IEEE802154_LLSEC_ADD_DEV, ieee802154_llsec_add_dev),
	IEEE802154_OP(IEEE802154_LLSEC_DEL_DEV, ieee802154_llsec_del_dev),
	IEEE802154_DUMP(IEEE802154_LLSEC_LIST_DEVKEY, NULL,
			ieee802154_llsec_dump_devkeys),
	IEEE802154_OP(IEEE802154_LLSEC_ADD_DEVKEY, ieee802154_llsec_add_devkey),
	IEEE802154_OP(IEEE802154_LLSEC_DEL_DEVKEY, ieee802154_llsec_del_devkey),
	IEEE802154_DUMP(IEEE802154_LLSEC_LIST_SECLEVEL, NULL,
			ieee802154_llsec_dump_seclevels),
	IEEE802154_OP(IEEE802154_LLSEC_ADD_SECLEVEL,
		      ieee802154_llsec_add_seclevel),
	IEEE802154_OP(IEEE802154_LLSEC_DEL_SECLEVEL,
		      ieee802154_llsec_del_seclevel),
};

static const struct genl_multicast_group ieee802154_mcgrps[] = {
	[IEEE802154_COORD_MCGRP] = { .name = IEEE802154_MCAST_COORD_NAME, },
	[IEEE802154_BEACON_MCGRP] = { .name = IEEE802154_MCAST_BEACON_NAME, },
};

struct genl_family nl802154_family __ro_after_init = {
	.hdrsize	= 0,
	.name		= IEEE802154_NL_NAME,
	.version	= 1,
	.maxattr	= IEEE802154_ATTR_MAX,
	.policy		= ieee802154_policy,
	.module		= THIS_MODULE,
	.ops		= ieee802154_ops,
	.n_ops		= ARRAY_SIZE(ieee802154_ops),
	.mcgrps		= ieee802154_mcgrps,
	.n_mcgrps	= ARRAY_SIZE(ieee802154_mcgrps),
};

int __init ieee802154_nl_init(void)
{
	return genl_register_family(&nl802154_family);
}

void ieee802154_nl_exit(void)
{
	genl_unregister_family(&nl802154_family);
}
Commit	Line	Data
1802d0be	1	// SPDX-License-Identifier: GPL-2.0-only
2c21d115	2	/*
69bb631e	3	* Netlink interface for IEEE 802.15.4 stack
2c21d115 SL	4	*
	5	* Copyright 2007, 2008 Siemens AG
	6	*
2c21d115 SL	7	* Written by:
	8	* Sergey Lapin <slapin@ossfans.org>
	9	* Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
8e753dd0	10	* Maxim Osipov <maxim.osipov@siemens.com>
2c21d115 SL	11	*/
	12
	13	#include <linux/kernel.h>
5a0e3ad6	14	#include <linux/gfp.h>
2c21d115 SL	15	#include <net/genetlink.h>
2c21d115 SL	16	#include <linux/nl802154.h>
78fe738d DES	17
78fe738d DES	18	#include "ieee802154.h"
2c21d115 SL	19
2c21d115 SL	20	static unsigned int ieee802154_seq_num;
c4835d81	21	static DEFINE_SPINLOCK(ieee802154_seq_lock);
2c21d115	22
2c21d115	23	/* Requests to userspace */
78fe738d	24	struct sk_buff *ieee802154_nl_create(int flags, u8 req)
2c21d115 SL	25	{
2c21d115 SL	26	void *hdr;
58050fce	27	struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
c4835d81	28	unsigned long f;
2c21d115 SL	29
	30	if (!msg)
	31	return NULL;
	32
c4835d81	33	spin_lock_irqsave(&ieee802154_seq_lock, f);
2c21d115	34	hdr = genlmsg_put(msg, 0, ieee802154_seq_num++,
4710d806	35	&nl802154_family, flags, req);
c4835d81	36	spin_unlock_irqrestore(&ieee802154_seq_lock, f);
2c21d115 SL	37	if (!hdr) {
	38	nlmsg_free(msg);
	39	return NULL;
	40	}
	41
	42	return msg;
	43	}
	44
78fe738d	45	int ieee802154_nl_mcast(struct sk_buff *msg, unsigned int group)
2c21d115	46	{
10c9cbb1 H	47	struct nlmsghdr *nlh = nlmsg_hdr(msg);
10c9cbb1 H	48	void *hdr = genlmsg_data(nlmsg_data(nlh));
2c21d115	49
053c095a	50	genlmsg_end(msg, hdr);
2c21d115	51
68eb5503	52	return genlmsg_multicast(&nl802154_family, msg, 0, group, GFP_ATOMIC);
2c21d115 SL	53	}
2c21d115 SL	54
339b4ca5	55	struct sk_buff ieee802154_nl_new_reply(struct genl_info info,
cad865dc	56	int flags, u8 req)
339b4ca5 DES	57	{
339b4ca5 DES	58	void *hdr;
58050fce	59	struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
339b4ca5 DES	60
	61	if (!msg)
	62	return NULL;
	63
	64	hdr = genlmsg_put_reply(msg, info,
4710d806	65	&nl802154_family, flags, req);
339b4ca5 DES	66	if (!hdr) {
	67	nlmsg_free(msg);
	68	return NULL;
	69	}
	70
	71	return msg;
	72	}
	73
	74	int ieee802154_nl_reply(struct sk_buff msg, struct genl_info info)
	75	{
10c9cbb1 H	76	struct nlmsghdr *nlh = nlmsg_hdr(msg);
10c9cbb1 H	77	void *hdr = genlmsg_data(nlmsg_data(nlh));
339b4ca5	78
053c095a	79	genlmsg_end(msg, hdr);
339b4ca5 DES	80
339b4ca5 DES	81	return genlmsg_reply(msg, info);
339b4ca5 DES	82	}
339b4ca5 DES	83
d01174fc	84	static const struct genl_ops ieee802154_ops[] = {
1c582d91 JB	85	/* see nl-phy.c */
	86	IEEE802154_DUMP(IEEE802154_LIST_PHY, ieee802154_list_phy,
	87	ieee802154_dump_phy),
	88	IEEE802154_OP(IEEE802154_ADD_IFACE, ieee802154_add_iface),
	89	IEEE802154_OP(IEEE802154_DEL_IFACE, ieee802154_del_iface),
	90	/* see nl-mac.c */
	91	IEEE802154_OP(IEEE802154_ASSOCIATE_REQ, ieee802154_associate_req),
	92	IEEE802154_OP(IEEE802154_ASSOCIATE_RESP, ieee802154_associate_resp),
	93	IEEE802154_OP(IEEE802154_DISASSOCIATE_REQ, ieee802154_disassociate_req),
	94	IEEE802154_OP(IEEE802154_SCAN_REQ, ieee802154_scan_req),
	95	IEEE802154_OP(IEEE802154_START_REQ, ieee802154_start_req),
	96	IEEE802154_DUMP(IEEE802154_LIST_IFACE, ieee802154_list_iface,
	97	ieee802154_dump_iface),
e462ded6	98	IEEE802154_OP(IEEE802154_SET_MACPARAMS, ieee802154_set_macparams),
3e9c156e PB	99	IEEE802154_OP(IEEE802154_LLSEC_GETPARAMS, ieee802154_llsec_getparams),
	100	IEEE802154_OP(IEEE802154_LLSEC_SETPARAMS, ieee802154_llsec_setparams),
	101	IEEE802154_DUMP(IEEE802154_LLSEC_LIST_KEY, NULL,
	102	ieee802154_llsec_dump_keys),
	103	IEEE802154_OP(IEEE802154_LLSEC_ADD_KEY, ieee802154_llsec_add_key),
	104	IEEE802154_OP(IEEE802154_LLSEC_DEL_KEY, ieee802154_llsec_del_key),
	105	IEEE802154_DUMP(IEEE802154_LLSEC_LIST_DEV, NULL,
	106	ieee802154_llsec_dump_devs),
	107	IEEE802154_OP(IEEE802154_LLSEC_ADD_DEV, ieee802154_llsec_add_dev),
	108	IEEE802154_OP(IEEE802154_LLSEC_DEL_DEV, ieee802154_llsec_del_dev),
	109	IEEE802154_DUMP(IEEE802154_LLSEC_LIST_DEVKEY, NULL,
	110	ieee802154_llsec_dump_devkeys),
	111	IEEE802154_OP(IEEE802154_LLSEC_ADD_DEVKEY, ieee802154_llsec_add_devkey),
	112	IEEE802154_OP(IEEE802154_LLSEC_DEL_DEVKEY, ieee802154_llsec_del_devkey),
	113	IEEE802154_DUMP(IEEE802154_LLSEC_LIST_SECLEVEL, NULL,
	114	ieee802154_llsec_dump_seclevels),
	115	IEEE802154_OP(IEEE802154_LLSEC_ADD_SECLEVEL,
	116	ieee802154_llsec_add_seclevel),
	117	IEEE802154_OP(IEEE802154_LLSEC_DEL_SECLEVEL,
	118	ieee802154_llsec_del_seclevel),
1c582d91 JB	119	};
1c582d91 JB	120
2a94fe48 JB	121	static const struct genl_multicast_group ieee802154_mcgrps[] = {
	122	[IEEE802154_COORD_MCGRP] = { .name = IEEE802154_MCAST_COORD_NAME, },
	123	[IEEE802154_BEACON_MCGRP] = { .name = IEEE802154_MCAST_BEACON_NAME, },
	124	};
2c21d115	125
56989f6d	126	struct genl_family nl802154_family __ro_after_init = {
489111e5 JB	127	.hdrsize = 0,
	128	.name = IEEE802154_NL_NAME,
	129	.version = 1,
	130	.maxattr = IEEE802154_ATTR_MAX,
3b0f31f2	131	.policy = ieee802154_policy,
489111e5	132	.module = THIS_MODULE,
d01174fc XL	133	.ops = ieee802154_ops,
d01174fc XL	134	.n_ops = ARRAY_SIZE(ieee802154_ops),
489111e5 JB	135	.mcgrps = ieee802154_mcgrps,
	136	.n_mcgrps = ARRAY_SIZE(ieee802154_mcgrps),
	137	};
	138
2a94fe48 JB	139	int __init ieee802154_nl_init(void)
2a94fe48 JB	140	{
489111e5	141	return genl_register_family(&nl802154_family);
2c21d115	142	}
2c21d115	143
79fe1a2a	144	void ieee802154_nl_exit(void)
2c21d115	145	{
78fe738d	146	genl_unregister_family(&nl802154_family);
2c21d115	147	}