[linux-2.6-block.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);

/* 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,
	.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
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 DES	25
78fe738d DES	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
2c21d115	31	/* Requests to userspace */
78fe738d	32	struct sk_buff *ieee802154_nl_create(int flags, u8 req)
2c21d115 SL	33	{
2c21d115 SL	34	void *hdr;
58050fce	35	struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
c4835d81	36	unsigned long f;
2c21d115 SL	37
	38	if (!msg)
	39	return NULL;
	40
c4835d81	41	spin_lock_irqsave(&ieee802154_seq_lock, f);
2c21d115	42	hdr = genlmsg_put(msg, 0, ieee802154_seq_num++,
4710d806	43	&nl802154_family, flags, req);
c4835d81	44	spin_unlock_irqrestore(&ieee802154_seq_lock, f);
2c21d115 SL	45	if (!hdr) {
	46	nlmsg_free(msg);
	47	return NULL;
	48	}
	49
	50	return msg;
	51	}
	52
78fe738d	53	int ieee802154_nl_mcast(struct sk_buff *msg, unsigned int group)
2c21d115	54	{
10c9cbb1 H	55	struct nlmsghdr *nlh = nlmsg_hdr(msg);
10c9cbb1 H	56	void *hdr = genlmsg_data(nlmsg_data(nlh));
2c21d115	57
053c095a	58	genlmsg_end(msg, hdr);
2c21d115	59
68eb5503	60	return genlmsg_multicast(&nl802154_family, msg, 0, group, GFP_ATOMIC);
2c21d115 SL	61	}
2c21d115 SL	62
339b4ca5	63	struct sk_buff ieee802154_nl_new_reply(struct genl_info info,
cad865dc	64	int flags, u8 req)
339b4ca5 DES	65	{
339b4ca5 DES	66	void *hdr;
58050fce	67	struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
339b4ca5 DES	68
	69	if (!msg)
	70	return NULL;
	71
	72	hdr = genlmsg_put_reply(msg, info,
4710d806	73	&nl802154_family, flags, req);
339b4ca5 DES	74	if (!hdr) {
	75	nlmsg_free(msg);
	76	return NULL;
	77	}
	78
	79	return msg;
	80	}
	81
	82	int ieee802154_nl_reply(struct sk_buff msg, struct genl_info info)
	83	{
10c9cbb1 H	84	struct nlmsghdr *nlh = nlmsg_hdr(msg);
10c9cbb1 H	85	void *hdr = genlmsg_data(nlmsg_data(nlh));
339b4ca5	86
053c095a	87	genlmsg_end(msg, hdr);
339b4ca5 DES	88
339b4ca5 DES	89	return genlmsg_reply(msg, info);
339b4ca5 DES	90	}
339b4ca5 DES	91
d01174fc	92	static const struct genl_ops ieee802154_ops[] = {
1c582d91 JB	93	/* see nl-phy.c */
	94	IEEE802154_DUMP(IEEE802154_LIST_PHY, ieee802154_list_phy,
	95	ieee802154_dump_phy),
	96	IEEE802154_OP(IEEE802154_ADD_IFACE, ieee802154_add_iface),
	97	IEEE802154_OP(IEEE802154_DEL_IFACE, ieee802154_del_iface),
	98	/* see nl-mac.c */
	99	IEEE802154_OP(IEEE802154_ASSOCIATE_REQ, ieee802154_associate_req),
	100	IEEE802154_OP(IEEE802154_ASSOCIATE_RESP, ieee802154_associate_resp),
	101	IEEE802154_OP(IEEE802154_DISASSOCIATE_REQ, ieee802154_disassociate_req),
	102	IEEE802154_OP(IEEE802154_SCAN_REQ, ieee802154_scan_req),
	103	IEEE802154_OP(IEEE802154_START_REQ, ieee802154_start_req),
	104	IEEE802154_DUMP(IEEE802154_LIST_IFACE, ieee802154_list_iface,
	105	ieee802154_dump_iface),
e462ded6	106	IEEE802154_OP(IEEE802154_SET_MACPARAMS, ieee802154_set_macparams),
3e9c156e PB	107	IEEE802154_OP(IEEE802154_LLSEC_GETPARAMS, ieee802154_llsec_getparams),
	108	IEEE802154_OP(IEEE802154_LLSEC_SETPARAMS, ieee802154_llsec_setparams),
	109	IEEE802154_DUMP(IEEE802154_LLSEC_LIST_KEY, NULL,
	110	ieee802154_llsec_dump_keys),
	111	IEEE802154_OP(IEEE802154_LLSEC_ADD_KEY, ieee802154_llsec_add_key),
	112	IEEE802154_OP(IEEE802154_LLSEC_DEL_KEY, ieee802154_llsec_del_key),
	113	IEEE802154_DUMP(IEEE802154_LLSEC_LIST_DEV, NULL,
	114	ieee802154_llsec_dump_devs),
	115	IEEE802154_OP(IEEE802154_LLSEC_ADD_DEV, ieee802154_llsec_add_dev),
	116	IEEE802154_OP(IEEE802154_LLSEC_DEL_DEV, ieee802154_llsec_del_dev),
	117	IEEE802154_DUMP(IEEE802154_LLSEC_LIST_DEVKEY, NULL,
	118	ieee802154_llsec_dump_devkeys),
	119	IEEE802154_OP(IEEE802154_LLSEC_ADD_DEVKEY, ieee802154_llsec_add_devkey),
	120	IEEE802154_OP(IEEE802154_LLSEC_DEL_DEVKEY, ieee802154_llsec_del_devkey),
	121	IEEE802154_DUMP(IEEE802154_LLSEC_LIST_SECLEVEL, NULL,
	122	ieee802154_llsec_dump_seclevels),
	123	IEEE802154_OP(IEEE802154_LLSEC_ADD_SECLEVEL,
	124	ieee802154_llsec_add_seclevel),
	125	IEEE802154_OP(IEEE802154_LLSEC_DEL_SECLEVEL,
	126	ieee802154_llsec_del_seclevel),
1c582d91 JB	127	};
1c582d91 JB	128
2a94fe48 JB	129	static const struct genl_multicast_group ieee802154_mcgrps[] = {
	130	[IEEE802154_COORD_MCGRP] = { .name = IEEE802154_MCAST_COORD_NAME, },
	131	[IEEE802154_BEACON_MCGRP] = { .name = IEEE802154_MCAST_BEACON_NAME, },
	132	};
2c21d115	133
56989f6d	134	struct genl_family nl802154_family __ro_after_init = {
489111e5 JB	135	.hdrsize = 0,
	136	.name = IEEE802154_NL_NAME,
	137	.version = 1,
	138	.maxattr = IEEE802154_ATTR_MAX,
	139	.module = THIS_MODULE,
d01174fc XL	140	.ops = ieee802154_ops,
d01174fc XL	141	.n_ops = ARRAY_SIZE(ieee802154_ops),
489111e5 JB	142	.mcgrps = ieee802154_mcgrps,
	143	.n_mcgrps = ARRAY_SIZE(ieee802154_mcgrps),
	144	};
	145
2a94fe48 JB	146	int __init ieee802154_nl_init(void)
2a94fe48 JB	147	{
489111e5	148	return genl_register_family(&nl802154_family);
2c21d115	149	}
2c21d115	150
79fe1a2a	151	void ieee802154_nl_exit(void)
2c21d115	152	{
78fe738d	153	genl_unregister_family(&nl802154_family);
2c21d115	154	}