[deliverable/linux.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));

	if (genlmsg_end(msg, hdr) < 0)
		goto out;

	return genlmsg_multicast(&nl802154_family, msg, 0, group, GFP_ATOMIC);
out:
	nlmsg_free(msg);
	return -ENOBUFS;
}

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));

	if (genlmsg_end(msg, hdr) < 0)
		goto out;

	return genlmsg_reply(msg, info);
out:
	nlmsg_free(msg);
	return -ENOBUFS;
}

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 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
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
8e753dd0	66	if (genlmsg_end(msg, hdr) < 0)
2c21d115 SL	67	goto out;
2c21d115 SL	68
68eb5503	69	return genlmsg_multicast(&nl802154_family, msg, 0, group, GFP_ATOMIC);
2c21d115 SL	70	out:
	71	nlmsg_free(msg);
	72	return -ENOBUFS;
	73	}
	74
339b4ca5 DES	75	struct sk_buff ieee802154_nl_new_reply(struct genl_info info,
	76	int flags, u8 req)
	77	{
	78	void *hdr;
58050fce	79	struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
339b4ca5 DES	80
	81	if (!msg)
	82	return NULL;
	83
	84	hdr = genlmsg_put_reply(msg, info,
4710d806	85	&nl802154_family, flags, req);
339b4ca5 DES	86	if (!hdr) {
	87	nlmsg_free(msg);
	88	return NULL;
	89	}
	90
	91	return msg;
	92	}
	93
	94	int ieee802154_nl_reply(struct sk_buff msg, struct genl_info info)
	95	{
10c9cbb1 H	96	struct nlmsghdr *nlh = nlmsg_hdr(msg);
10c9cbb1 H	97	void *hdr = genlmsg_data(nlmsg_data(nlh));
339b4ca5 DES	98
	99	if (genlmsg_end(msg, hdr) < 0)
	100	goto out;
	101
	102	return genlmsg_reply(msg, info);
	103	out:
	104	nlmsg_free(msg);
	105	return -ENOBUFS;
	106	}
	107
4534de83	108	static const struct genl_ops ieee8021154_ops[] = {
1c582d91 JB	109	/* see nl-phy.c */
	110	IEEE802154_DUMP(IEEE802154_LIST_PHY, ieee802154_list_phy,
	111	ieee802154_dump_phy),
	112	IEEE802154_OP(IEEE802154_ADD_IFACE, ieee802154_add_iface),
	113	IEEE802154_OP(IEEE802154_DEL_IFACE, ieee802154_del_iface),
	114	/* see nl-mac.c */
	115	IEEE802154_OP(IEEE802154_ASSOCIATE_REQ, ieee802154_associate_req),
	116	IEEE802154_OP(IEEE802154_ASSOCIATE_RESP, ieee802154_associate_resp),
	117	IEEE802154_OP(IEEE802154_DISASSOCIATE_REQ, ieee802154_disassociate_req),
	118	IEEE802154_OP(IEEE802154_SCAN_REQ, ieee802154_scan_req),
	119	IEEE802154_OP(IEEE802154_START_REQ, ieee802154_start_req),
	120	IEEE802154_DUMP(IEEE802154_LIST_IFACE, ieee802154_list_iface,
	121	ieee802154_dump_iface),
e462ded6	122	IEEE802154_OP(IEEE802154_SET_MACPARAMS, ieee802154_set_macparams),
3e9c156e PB	123	IEEE802154_OP(IEEE802154_LLSEC_GETPARAMS, ieee802154_llsec_getparams),
	124	IEEE802154_OP(IEEE802154_LLSEC_SETPARAMS, ieee802154_llsec_setparams),
	125	IEEE802154_DUMP(IEEE802154_LLSEC_LIST_KEY, NULL,
	126	ieee802154_llsec_dump_keys),
	127	IEEE802154_OP(IEEE802154_LLSEC_ADD_KEY, ieee802154_llsec_add_key),
	128	IEEE802154_OP(IEEE802154_LLSEC_DEL_KEY, ieee802154_llsec_del_key),
	129	IEEE802154_DUMP(IEEE802154_LLSEC_LIST_DEV, NULL,
	130	ieee802154_llsec_dump_devs),
	131	IEEE802154_OP(IEEE802154_LLSEC_ADD_DEV, ieee802154_llsec_add_dev),
	132	IEEE802154_OP(IEEE802154_LLSEC_DEL_DEV, ieee802154_llsec_del_dev),
	133	IEEE802154_DUMP(IEEE802154_LLSEC_LIST_DEVKEY, NULL,
	134	ieee802154_llsec_dump_devkeys),
	135	IEEE802154_OP(IEEE802154_LLSEC_ADD_DEVKEY, ieee802154_llsec_add_devkey),
	136	IEEE802154_OP(IEEE802154_LLSEC_DEL_DEVKEY, ieee802154_llsec_del_devkey),
	137	IEEE802154_DUMP(IEEE802154_LLSEC_LIST_SECLEVEL, NULL,
	138	ieee802154_llsec_dump_seclevels),
	139	IEEE802154_OP(IEEE802154_LLSEC_ADD_SECLEVEL,
	140	ieee802154_llsec_add_seclevel),
	141	IEEE802154_OP(IEEE802154_LLSEC_DEL_SECLEVEL,
	142	ieee802154_llsec_del_seclevel),
1c582d91 JB	143	};
1c582d91 JB	144
2a94fe48 JB	145	static const struct genl_multicast_group ieee802154_mcgrps[] = {
	146	[IEEE802154_COORD_MCGRP] = { .name = IEEE802154_MCAST_COORD_NAME, },
	147	[IEEE802154_BEACON_MCGRP] = { .name = IEEE802154_MCAST_BEACON_NAME, },
	148	};
2c21d115	149
2c21d115	150
2a94fe48 JB	151	int __init ieee802154_nl_init(void)
	152	{
	153	return genl_register_family_with_ops_groups(&nl802154_family,
	154	ieee8021154_ops,
	155	ieee802154_mcgrps);
2c21d115	156	}
2c21d115	157
79fe1a2a	158	void ieee802154_nl_exit(void)
2c21d115	159	{
78fe738d	160	genl_unregister_family(&nl802154_family);
2c21d115	161	}