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Sergey Lapin2c21d112009-06-08 12:18:49 +00001/*
Varka Bhadram69bb6312014-11-25 10:04:57 +05302 * Netlink interface for IEEE 802.15.4 stack
Sergey Lapin2c21d112009-06-08 12:18:49 +00003 *
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 *
Sergey Lapin2c21d112009-06-08 12:18:49 +000015 * Written by:
16 * Sergey Lapin <slapin@ossfans.org>
17 * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Dmitry Baryshkov8e753dd2009-08-07 02:58:40 +000018 * Maxim Osipov <maxim.osipov@siemens.com>
Sergey Lapin2c21d112009-06-08 12:18:49 +000019 */
20
21#include <linux/kernel.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090022#include <linux/gfp.h>
Sergey Lapin2c21d112009-06-08 12:18:49 +000023#include <net/genetlink.h>
24#include <linux/nl802154.h>
Dmitry Eremin-Solenikov78fe7382009-09-14 18:17:36 +040025
26#include "ieee802154.h"
Sergey Lapin2c21d112009-06-08 12:18:49 +000027
28static unsigned int ieee802154_seq_num;
Dmitry Eremin-Solenikovc4835d82009-09-10 18:02:30 +040029static DEFINE_SPINLOCK(ieee802154_seq_lock);
Sergey Lapin2c21d112009-06-08 12:18:49 +000030
Dmitry Eremin-Solenikov78fe7382009-09-14 18:17:36 +040031struct genl_family nl802154_family = {
Sergey Lapin2c21d112009-06-08 12:18:49 +000032 .id = GENL_ID_GENERATE,
33 .hdrsize = 0,
34 .name = IEEE802154_NL_NAME,
35 .version = 1,
36 .maxattr = IEEE802154_ATTR_MAX,
37};
38
Sergey Lapin2c21d112009-06-08 12:18:49 +000039/* Requests to userspace */
Dmitry Eremin-Solenikov78fe7382009-09-14 18:17:36 +040040struct sk_buff *ieee802154_nl_create(int flags, u8 req)
Sergey Lapin2c21d112009-06-08 12:18:49 +000041{
42 void *hdr;
Thomas Graf58050fc2012-06-28 03:57:45 +000043 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
Dmitry Eremin-Solenikovc4835d82009-09-10 18:02:30 +040044 unsigned long f;
Sergey Lapin2c21d112009-06-08 12:18:49 +000045
46 if (!msg)
47 return NULL;
48
Dmitry Eremin-Solenikovc4835d82009-09-10 18:02:30 +040049 spin_lock_irqsave(&ieee802154_seq_lock, f);
Sergey Lapin2c21d112009-06-08 12:18:49 +000050 hdr = genlmsg_put(msg, 0, ieee802154_seq_num++,
Varka Bhadram4710d802014-07-02 09:01:09 +053051 &nl802154_family, flags, req);
Dmitry Eremin-Solenikovc4835d82009-09-10 18:02:30 +040052 spin_unlock_irqrestore(&ieee802154_seq_lock, f);
Sergey Lapin2c21d112009-06-08 12:18:49 +000053 if (!hdr) {
54 nlmsg_free(msg);
55 return NULL;
56 }
57
58 return msg;
59}
60
Dmitry Eremin-Solenikov78fe7382009-09-14 18:17:36 +040061int ieee802154_nl_mcast(struct sk_buff *msg, unsigned int group)
Sergey Lapin2c21d112009-06-08 12:18:49 +000062{
Hong zhi guo10c9cbb2013-03-29 05:09:35 +000063 struct nlmsghdr *nlh = nlmsg_hdr(msg);
64 void *hdr = genlmsg_data(nlmsg_data(nlh));
Sergey Lapin2c21d112009-06-08 12:18:49 +000065
Dmitry Baryshkov8e753dd2009-08-07 02:58:40 +000066 if (genlmsg_end(msg, hdr) < 0)
Sergey Lapin2c21d112009-06-08 12:18:49 +000067 goto out;
68
Johannes Berg68eb5502013-11-19 15:19:38 +010069 return genlmsg_multicast(&nl802154_family, msg, 0, group, GFP_ATOMIC);
Sergey Lapin2c21d112009-06-08 12:18:49 +000070out:
71 nlmsg_free(msg);
72 return -ENOBUFS;
73}
74
Dmitry Eremin-Solenikov339b4ca2009-11-04 18:05:38 +030075struct sk_buff *ieee802154_nl_new_reply(struct genl_info *info,
Stefan Schmidtcad865d2014-12-04 11:51:58 +010076 int flags, u8 req)
Dmitry Eremin-Solenikov339b4ca2009-11-04 18:05:38 +030077{
78 void *hdr;
Thomas Graf58050fc2012-06-28 03:57:45 +000079 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
Dmitry Eremin-Solenikov339b4ca2009-11-04 18:05:38 +030080
81 if (!msg)
82 return NULL;
83
84 hdr = genlmsg_put_reply(msg, info,
Varka Bhadram4710d802014-07-02 09:01:09 +053085 &nl802154_family, flags, req);
Dmitry Eremin-Solenikov339b4ca2009-11-04 18:05:38 +030086 if (!hdr) {
87 nlmsg_free(msg);
88 return NULL;
89 }
90
91 return msg;
92}
93
94int ieee802154_nl_reply(struct sk_buff *msg, struct genl_info *info)
95{
Hong zhi guo10c9cbb2013-03-29 05:09:35 +000096 struct nlmsghdr *nlh = nlmsg_hdr(msg);
97 void *hdr = genlmsg_data(nlmsg_data(nlh));
Dmitry Eremin-Solenikov339b4ca2009-11-04 18:05:38 +030098
99 if (genlmsg_end(msg, hdr) < 0)
100 goto out;
101
102 return genlmsg_reply(msg, info);
103out:
104 nlmsg_free(msg);
105 return -ENOBUFS;
106}
107
Johannes Berg4534de82013-11-14 17:14:46 +0100108static const struct genl_ops ieee8021154_ops[] = {
Johannes Berg1c582d92013-11-14 17:14:41 +0100109 /* 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),
Phoebe Buckheistere462ded2014-03-31 21:37:46 +0200122 IEEE802154_OP(IEEE802154_SET_MACPARAMS, ieee802154_set_macparams),
Phoebe Buckheister3e9c1562014-05-16 17:46:44 +0200123 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),
Johannes Berg1c582d92013-11-14 17:14:41 +0100143};
144
Johannes Berg2a94fe42013-11-19 15:19:39 +0100145static 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};
149
Dmitry Eremin-Solenikovcb6b3762009-09-10 17:50:12 +0400150int __init ieee802154_nl_init(void)
Sergey Lapin2c21d112009-06-08 12:18:49 +0000151{
Johannes Berg2a94fe42013-11-19 15:19:39 +0100152 return genl_register_family_with_ops_groups(&nl802154_family,
153 ieee8021154_ops,
154 ieee802154_mcgrps);
Sergey Lapin2c21d112009-06-08 12:18:49 +0000155}
Sergey Lapin2c21d112009-06-08 12:18:49 +0000156
Alexander Aring79fe1a22014-11-09 08:36:53 +0100157void ieee802154_nl_exit(void)
Sergey Lapin2c21d112009-06-08 12:18:49 +0000158{
Dmitry Eremin-Solenikov78fe7382009-09-14 18:17:36 +0400159 genl_unregister_family(&nl802154_family);
Sergey Lapin2c21d112009-06-08 12:18:49 +0000160}