[mirror_ubuntu-jammy-kernel.git] / net / ieee802154 / netlink.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/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);

struct genl_family nl802154_family = {
	.id		= GENL_ID_GENERATE,
	.hdrsize	= 0,
	.name		= IEEE802154_NL_NAME,
	.version	= 1,
	.maxattr	= IEEE802154_ATTR_MAX,
};

/* 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 ieee8021154_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, },
};

int __init ieee802154_nl_init(void)
{
	return genl_register_family_with_ops_groups(&nl802154_family,
						    ieee8021154_ops,
						    ieee802154_mcgrps);
}

void ieee802154_nl_exit(void)
{
	genl_unregister_family(&nl802154_family);
}
Commit	Line	Data
2c21d115	1	/*
69bb631e	2	* Netlink interface for IEEE 802.15.4 stack
2c21d115 SL	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	*
2c21d115 SL	15	* Written by:
	16	* Sergey Lapin <slapin@ossfans.org>
	17	* Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
8e753dd0	18	* Maxim Osipov <maxim.osipov@siemens.com>
2c21d115 SL	19	*/
	20
	21	#include <linux/kernel.h>
5a0e3ad6	22	#include <linux/gfp.h>
2c21d115 SL	23	#include <net/genetlink.h>
2c21d115 SL	24	#include <linux/nl802154.h>
78fe738d DB	25
78fe738d DB	26	#include "ieee802154.h"
2c21d115 SL	27
2c21d115 SL	28	static unsigned int ieee802154_seq_num;
c4835d81	29	static DEFINE_SPINLOCK(ieee802154_seq_lock);
2c21d115	30
78fe738d	31	struct genl_family nl802154_family = {
2c21d115 SL	32	.id = GENL_ID_GENERATE,
	33	.hdrsize = 0,
	34	.name = IEEE802154_NL_NAME,
	35	.version = 1,
	36	.maxattr = IEEE802154_ATTR_MAX,
	37	};
	38
2c21d115	39	/* Requests to userspace */
78fe738d	40	struct sk_buff *ieee802154_nl_create(int flags, u8 req)
2c21d115 SL	41	{
2c21d115 SL	42	void *hdr;
58050fce	43	struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
c4835d81	44	unsigned long f;
2c21d115 SL	45
	46	if (!msg)
	47	return NULL;
	48
c4835d81	49	spin_lock_irqsave(&ieee802154_seq_lock, f);
2c21d115	50	hdr = genlmsg_put(msg, 0, ieee802154_seq_num++,
4710d806	51	&nl802154_family, flags, req);
c4835d81	52	spin_unlock_irqrestore(&ieee802154_seq_lock, f);
2c21d115 SL	53	if (!hdr) {
	54	nlmsg_free(msg);
	55	return NULL;
	56	}
	57
	58	return msg;
	59	}
	60
78fe738d	61	int ieee802154_nl_mcast(struct sk_buff *msg, unsigned int group)
2c21d115	62	{
10c9cbb1 H	63	struct nlmsghdr *nlh = nlmsg_hdr(msg);
10c9cbb1 H	64	void *hdr = genlmsg_data(nlmsg_data(nlh));
2c21d115	65
053c095a	66	genlmsg_end(msg, hdr);
2c21d115	67
68eb5503	68	return genlmsg_multicast(&nl802154_family, msg, 0, group, GFP_ATOMIC);
2c21d115 SL	69	}
2c21d115 SL	70
339b4ca5	71	struct sk_buff ieee802154_nl_new_reply(struct genl_info info,
cad865dc	72	int flags, u8 req)
339b4ca5 DB	73	{
339b4ca5 DB	74	void *hdr;
58050fce	75	struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
339b4ca5 DB	76
	77	if (!msg)
	78	return NULL;
	79
	80	hdr = genlmsg_put_reply(msg, info,
4710d806	81	&nl802154_family, flags, req);
339b4ca5 DB	82	if (!hdr) {
	83	nlmsg_free(msg);
	84	return NULL;
	85	}
	86
	87	return msg;
	88	}
	89
	90	int ieee802154_nl_reply(struct sk_buff msg, struct genl_info info)
	91	{
10c9cbb1 H	92	struct nlmsghdr *nlh = nlmsg_hdr(msg);
10c9cbb1 H	93	void *hdr = genlmsg_data(nlmsg_data(nlh));
339b4ca5	94
053c095a	95	genlmsg_end(msg, hdr);
339b4ca5 DB	96
339b4ca5 DB	97	return genlmsg_reply(msg, info);
339b4ca5 DB	98	}
339b4ca5 DB	99
4534de83	100	static const struct genl_ops ieee8021154_ops[] = {
1c582d91 JB	101	/* see nl-phy.c */
	102	IEEE802154_DUMP(IEEE802154_LIST_PHY, ieee802154_list_phy,
	103	ieee802154_dump_phy),
	104	IEEE802154_OP(IEEE802154_ADD_IFACE, ieee802154_add_iface),
	105	IEEE802154_OP(IEEE802154_DEL_IFACE, ieee802154_del_iface),
	106	/* see nl-mac.c */
	107	IEEE802154_OP(IEEE802154_ASSOCIATE_REQ, ieee802154_associate_req),
	108	IEEE802154_OP(IEEE802154_ASSOCIATE_RESP, ieee802154_associate_resp),
	109	IEEE802154_OP(IEEE802154_DISASSOCIATE_REQ, ieee802154_disassociate_req),
	110	IEEE802154_OP(IEEE802154_SCAN_REQ, ieee802154_scan_req),
	111	IEEE802154_OP(IEEE802154_START_REQ, ieee802154_start_req),
	112	IEEE802154_DUMP(IEEE802154_LIST_IFACE, ieee802154_list_iface,
	113	ieee802154_dump_iface),
e462ded6	114	IEEE802154_OP(IEEE802154_SET_MACPARAMS, ieee802154_set_macparams),
3e9c156e PB	115	IEEE802154_OP(IEEE802154_LLSEC_GETPARAMS, ieee802154_llsec_getparams),
	116	IEEE802154_OP(IEEE802154_LLSEC_SETPARAMS, ieee802154_llsec_setparams),
	117	IEEE802154_DUMP(IEEE802154_LLSEC_LIST_KEY, NULL,
	118	ieee802154_llsec_dump_keys),
	119	IEEE802154_OP(IEEE802154_LLSEC_ADD_KEY, ieee802154_llsec_add_key),
	120	IEEE802154_OP(IEEE802154_LLSEC_DEL_KEY, ieee802154_llsec_del_key),
	121	IEEE802154_DUMP(IEEE802154_LLSEC_LIST_DEV, NULL,
	122	ieee802154_llsec_dump_devs),
	123	IEEE802154_OP(IEEE802154_LLSEC_ADD_DEV, ieee802154_llsec_add_dev),
	124	IEEE802154_OP(IEEE802154_LLSEC_DEL_DEV, ieee802154_llsec_del_dev),
	125	IEEE802154_DUMP(IEEE802154_LLSEC_LIST_DEVKEY, NULL,
	126	ieee802154_llsec_dump_devkeys),
	127	IEEE802154_OP(IEEE802154_LLSEC_ADD_DEVKEY, ieee802154_llsec_add_devkey),
	128	IEEE802154_OP(IEEE802154_LLSEC_DEL_DEVKEY, ieee802154_llsec_del_devkey),
	129	IEEE802154_DUMP(IEEE802154_LLSEC_LIST_SECLEVEL, NULL,
	130	ieee802154_llsec_dump_seclevels),
	131	IEEE802154_OP(IEEE802154_LLSEC_ADD_SECLEVEL,
	132	ieee802154_llsec_add_seclevel),
	133	IEEE802154_OP(IEEE802154_LLSEC_DEL_SECLEVEL,
	134	ieee802154_llsec_del_seclevel),
1c582d91 JB	135	};
1c582d91 JB	136
2a94fe48 JB	137	static const struct genl_multicast_group ieee802154_mcgrps[] = {
	138	[IEEE802154_COORD_MCGRP] = { .name = IEEE802154_MCAST_COORD_NAME, },
	139	[IEEE802154_BEACON_MCGRP] = { .name = IEEE802154_MCAST_BEACON_NAME, },
	140	};
2c21d115	141
2a94fe48 JB	142	int __init ieee802154_nl_init(void)
	143	{
	144	return genl_register_family_with_ops_groups(&nl802154_family,
	145	ieee8021154_ops,
	146	ieee802154_mcgrps);
2c21d115	147	}
2c21d115	148
79fe1a2a	149	void ieee802154_nl_exit(void)
2c21d115	150	{
78fe738d	151	genl_unregister_family(&nl802154_family);
2c21d115	152	}