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1802d0be | 1 | // SPDX-License-Identifier: GPL-2.0-only |
2c21d115 | 2 | /* |
69bb631e | 3 | * Netlink interface for IEEE 802.15.4 stack |
2c21d115 SL |
4 | * |
5 | * Copyright 2007, 2008 Siemens AG | |
6 | * | |
2c21d115 SL |
7 | * Written by: |
8 | * Sergey Lapin <slapin@ossfans.org> | |
9 | * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> | |
8e753dd0 | 10 | * Maxim Osipov <maxim.osipov@siemens.com> |
2c21d115 SL |
11 | */ |
12 | ||
13 | #include <linux/kernel.h> | |
5a0e3ad6 | 14 | #include <linux/gfp.h> |
2c21d115 SL |
15 | #include <net/genetlink.h> |
16 | #include <linux/nl802154.h> | |
78fe738d DES |
17 | |
18 | #include "ieee802154.h" | |
2c21d115 SL |
19 | |
20 | static unsigned int ieee802154_seq_num; | |
c4835d81 | 21 | static DEFINE_SPINLOCK(ieee802154_seq_lock); |
2c21d115 | 22 | |
2c21d115 | 23 | /* Requests to userspace */ |
78fe738d | 24 | struct sk_buff *ieee802154_nl_create(int flags, u8 req) |
2c21d115 SL |
25 | { |
26 | void *hdr; | |
58050fce | 27 | struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
c4835d81 | 28 | unsigned long f; |
2c21d115 SL |
29 | |
30 | if (!msg) | |
31 | return NULL; | |
32 | ||
c4835d81 | 33 | spin_lock_irqsave(&ieee802154_seq_lock, f); |
2c21d115 | 34 | hdr = genlmsg_put(msg, 0, ieee802154_seq_num++, |
4710d806 | 35 | &nl802154_family, flags, req); |
c4835d81 | 36 | spin_unlock_irqrestore(&ieee802154_seq_lock, f); |
2c21d115 SL |
37 | if (!hdr) { |
38 | nlmsg_free(msg); | |
39 | return NULL; | |
40 | } | |
41 | ||
42 | return msg; | |
43 | } | |
44 | ||
78fe738d | 45 | int ieee802154_nl_mcast(struct sk_buff *msg, unsigned int group) |
2c21d115 | 46 | { |
10c9cbb1 H |
47 | struct nlmsghdr *nlh = nlmsg_hdr(msg); |
48 | void *hdr = genlmsg_data(nlmsg_data(nlh)); | |
2c21d115 | 49 | |
053c095a | 50 | genlmsg_end(msg, hdr); |
2c21d115 | 51 | |
68eb5503 | 52 | return genlmsg_multicast(&nl802154_family, msg, 0, group, GFP_ATOMIC); |
2c21d115 SL |
53 | } |
54 | ||
339b4ca5 | 55 | struct sk_buff *ieee802154_nl_new_reply(struct genl_info *info, |
cad865dc | 56 | int flags, u8 req) |
339b4ca5 DES |
57 | { |
58 | void *hdr; | |
58050fce | 59 | struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
339b4ca5 DES |
60 | |
61 | if (!msg) | |
62 | return NULL; | |
63 | ||
64 | hdr = genlmsg_put_reply(msg, info, | |
4710d806 | 65 | &nl802154_family, flags, req); |
339b4ca5 DES |
66 | if (!hdr) { |
67 | nlmsg_free(msg); | |
68 | return NULL; | |
69 | } | |
70 | ||
71 | return msg; | |
72 | } | |
73 | ||
74 | int ieee802154_nl_reply(struct sk_buff *msg, struct genl_info *info) | |
75 | { | |
10c9cbb1 H |
76 | struct nlmsghdr *nlh = nlmsg_hdr(msg); |
77 | void *hdr = genlmsg_data(nlmsg_data(nlh)); | |
339b4ca5 | 78 | |
053c095a | 79 | genlmsg_end(msg, hdr); |
339b4ca5 DES |
80 | |
81 | return genlmsg_reply(msg, info); | |
339b4ca5 DES |
82 | } |
83 | ||
66a9b928 | 84 | static const struct genl_small_ops ieee802154_ops[] = { |
1c582d91 JB |
85 | /* see nl-phy.c */ |
86 | IEEE802154_DUMP(IEEE802154_LIST_PHY, ieee802154_list_phy, | |
87 | ieee802154_dump_phy), | |
88 | IEEE802154_OP(IEEE802154_ADD_IFACE, ieee802154_add_iface), | |
89 | IEEE802154_OP(IEEE802154_DEL_IFACE, ieee802154_del_iface), | |
90 | /* see nl-mac.c */ | |
91 | IEEE802154_OP(IEEE802154_ASSOCIATE_REQ, ieee802154_associate_req), | |
92 | IEEE802154_OP(IEEE802154_ASSOCIATE_RESP, ieee802154_associate_resp), | |
93 | IEEE802154_OP(IEEE802154_DISASSOCIATE_REQ, ieee802154_disassociate_req), | |
94 | IEEE802154_OP(IEEE802154_SCAN_REQ, ieee802154_scan_req), | |
95 | IEEE802154_OP(IEEE802154_START_REQ, ieee802154_start_req), | |
96 | IEEE802154_DUMP(IEEE802154_LIST_IFACE, ieee802154_list_iface, | |
97 | ieee802154_dump_iface), | |
e462ded6 | 98 | IEEE802154_OP(IEEE802154_SET_MACPARAMS, ieee802154_set_macparams), |
3e9c156e PB |
99 | IEEE802154_OP(IEEE802154_LLSEC_GETPARAMS, ieee802154_llsec_getparams), |
100 | IEEE802154_OP(IEEE802154_LLSEC_SETPARAMS, ieee802154_llsec_setparams), | |
101 | IEEE802154_DUMP(IEEE802154_LLSEC_LIST_KEY, NULL, | |
102 | ieee802154_llsec_dump_keys), | |
103 | IEEE802154_OP(IEEE802154_LLSEC_ADD_KEY, ieee802154_llsec_add_key), | |
104 | IEEE802154_OP(IEEE802154_LLSEC_DEL_KEY, ieee802154_llsec_del_key), | |
105 | IEEE802154_DUMP(IEEE802154_LLSEC_LIST_DEV, NULL, | |
106 | ieee802154_llsec_dump_devs), | |
107 | IEEE802154_OP(IEEE802154_LLSEC_ADD_DEV, ieee802154_llsec_add_dev), | |
108 | IEEE802154_OP(IEEE802154_LLSEC_DEL_DEV, ieee802154_llsec_del_dev), | |
109 | IEEE802154_DUMP(IEEE802154_LLSEC_LIST_DEVKEY, NULL, | |
110 | ieee802154_llsec_dump_devkeys), | |
111 | IEEE802154_OP(IEEE802154_LLSEC_ADD_DEVKEY, ieee802154_llsec_add_devkey), | |
112 | IEEE802154_OP(IEEE802154_LLSEC_DEL_DEVKEY, ieee802154_llsec_del_devkey), | |
113 | IEEE802154_DUMP(IEEE802154_LLSEC_LIST_SECLEVEL, NULL, | |
114 | ieee802154_llsec_dump_seclevels), | |
115 | IEEE802154_OP(IEEE802154_LLSEC_ADD_SECLEVEL, | |
116 | ieee802154_llsec_add_seclevel), | |
117 | IEEE802154_OP(IEEE802154_LLSEC_DEL_SECLEVEL, | |
118 | ieee802154_llsec_del_seclevel), | |
1c582d91 JB |
119 | }; |
120 | ||
2a94fe48 JB |
121 | static const struct genl_multicast_group ieee802154_mcgrps[] = { |
122 | [IEEE802154_COORD_MCGRP] = { .name = IEEE802154_MCAST_COORD_NAME, }, | |
123 | [IEEE802154_BEACON_MCGRP] = { .name = IEEE802154_MCAST_BEACON_NAME, }, | |
124 | }; | |
2c21d115 | 125 | |
56989f6d | 126 | struct genl_family nl802154_family __ro_after_init = { |
489111e5 JB |
127 | .hdrsize = 0, |
128 | .name = IEEE802154_NL_NAME, | |
129 | .version = 1, | |
130 | .maxattr = IEEE802154_ATTR_MAX, | |
3b0f31f2 | 131 | .policy = ieee802154_policy, |
489111e5 | 132 | .module = THIS_MODULE, |
66a9b928 JK |
133 | .small_ops = ieee802154_ops, |
134 | .n_small_ops = ARRAY_SIZE(ieee802154_ops), | |
9c5d03d3 | 135 | .resv_start_op = IEEE802154_LLSEC_DEL_SECLEVEL + 1, |
489111e5 JB |
136 | .mcgrps = ieee802154_mcgrps, |
137 | .n_mcgrps = ARRAY_SIZE(ieee802154_mcgrps), | |
138 | }; | |
139 | ||
2a94fe48 JB |
140 | int __init ieee802154_nl_init(void) |
141 | { | |
489111e5 | 142 | return genl_register_family(&nl802154_family); |
2c21d115 | 143 | } |
2c21d115 | 144 | |
79fe1a2a | 145 | void ieee802154_nl_exit(void) |
2c21d115 | 146 | { |
78fe738d | 147 | genl_unregister_family(&nl802154_family); |
2c21d115 | 148 | } |