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gerrit.nordix.org / codeaurora / cp-linux / 7d38e033b98fd00da3a0b3a506c27c772f7167bf / . / net / ieee802154 / netlink.c
blob: c8133c07ceee4ce29411a5f9ea47c0c529231223 [file] [log] [blame]
Kyle Swenson8d8f6542021-03-15 11:02:55 -0600[diff] [blame]1/*
2 * Netlink interface for IEEE 802.15.4 stack
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 *
15 * Written by:
16 * Sergey Lapin <slapin@ossfans.org>
17 * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
18 * Maxim Osipov <maxim.osipov@siemens.com>
19 */
20
21#include <linux/kernel.h>
22#include <linux/gfp.h>
23#include <net/genetlink.h>
24#include <linux/nl802154.h>
25
26#include "ieee802154.h"
27
28static unsigned int ieee802154_seq_num;
29static DEFINE_SPINLOCK(ieee802154_seq_lock);
30
31struct genl_family nl802154_family = {
32 .id = GENL_ID_GENERATE,
33 .hdrsize = 0,
34 .name = IEEE802154_NL_NAME,
35 .version = 1,
36 .maxattr = IEEE802154_ATTR_MAX,
37};
38
39/* Requests to userspace */
40struct sk_buff *ieee802154_nl_create(int flags, u8 req)
41{
42 void *hdr;
43 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
44 unsigned long f;
45
46 if (!msg)
47 return NULL;
48
49 spin_lock_irqsave(&ieee802154_seq_lock, f);
50 hdr = genlmsg_put(msg, 0, ieee802154_seq_num++,
51 &nl802154_family, flags, req);
52 spin_unlock_irqrestore(&ieee802154_seq_lock, f);
53 if (!hdr) {
54 nlmsg_free(msg);
55 return NULL;
56 }
57
58 return msg;
59}
60
61int ieee802154_nl_mcast(struct sk_buff *msg, unsigned int group)
62{
63 struct nlmsghdr *nlh = nlmsg_hdr(msg);
64 void *hdr = genlmsg_data(nlmsg_data(nlh));
65
66 genlmsg_end(msg, hdr);
67
68 return genlmsg_multicast(&nl802154_family, msg, 0, group, GFP_ATOMIC);
69}
70
71struct sk_buff *ieee802154_nl_new_reply(struct genl_info *info,
72 int flags, u8 req)
73{
74 void *hdr;
75 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
76
77 if (!msg)
78 return NULL;
79
80 hdr = genlmsg_put_reply(msg, info,
81 &nl802154_family, flags, req);
82 if (!hdr) {
83 nlmsg_free(msg);
84 return NULL;
85 }
86
87 return msg;
88}
89
90int ieee802154_nl_reply(struct sk_buff *msg, struct genl_info *info)
91{
92 struct nlmsghdr *nlh = nlmsg_hdr(msg);
93 void *hdr = genlmsg_data(nlmsg_data(nlh));
94
95 genlmsg_end(msg, hdr);
96
97 return genlmsg_reply(msg, info);
98}
99
100static const struct genl_ops ieee8021154_ops[] = {
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),
114 IEEE802154_OP(IEEE802154_SET_MACPARAMS, ieee802154_set_macparams),
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),
135};
136
137static 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};
141
142int __init ieee802154_nl_init(void)
143{
144 return genl_register_family_with_ops_groups(&nl802154_family,
145 ieee8021154_ops,
146 ieee802154_mcgrps);
147}
148
149void ieee802154_nl_exit(void)
150{
151 genl_unregister_family(&nl802154_family);
152}