1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * Netlink interface for IEEE 802.15.4 stack |
4 | * |
5 | * Copyright 2007, 2008 Siemens AG |
6 | * |
7 | * Written by: |
8 | * Sergey Lapin <slapin@ossfans.org> |
9 | * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> |
10 | * Maxim Osipov <maxim.osipov@siemens.com> |
11 | */ |
12 | |
13 | #include <linux/gfp.h> |
14 | #include <linux/kernel.h> |
15 | #include <linux/if_arp.h> |
16 | #include <linux/netdevice.h> |
17 | #include <linux/ieee802154.h> |
18 | #include <net/netlink.h> |
19 | #include <net/genetlink.h> |
20 | #include <net/sock.h> |
21 | #include <linux/nl802154.h> |
22 | #include <linux/export.h> |
23 | #include <net/af_ieee802154.h> |
24 | #include <net/ieee802154_netdev.h> |
25 | #include <net/cfg802154.h> |
26 | |
27 | #include "ieee802154.h" |
28 | |
29 | static int nla_put_hwaddr(struct sk_buff *msg, int type, __le64 hwaddr, |
30 | int padattr) |
31 | { |
32 | return nla_put_u64_64bit(skb: msg, attrtype: type, swab64((__force u64)hwaddr), |
33 | padattr); |
34 | } |
35 | |
36 | static __le64 nla_get_hwaddr(const struct nlattr *nla) |
37 | { |
38 | return ieee802154_devaddr_from_raw(raw: nla_data(nla)); |
39 | } |
40 | |
41 | static int nla_put_shortaddr(struct sk_buff *msg, int type, __le16 addr) |
42 | { |
43 | return nla_put_u16(skb: msg, attrtype: type, le16_to_cpu(addr)); |
44 | } |
45 | |
46 | static __le16 nla_get_shortaddr(const struct nlattr *nla) |
47 | { |
48 | return cpu_to_le16(nla_get_u16(nla)); |
49 | } |
50 | |
51 | static int ieee802154_nl_start_confirm(struct net_device *dev, u8 status) |
52 | { |
53 | struct sk_buff *msg; |
54 | |
55 | pr_debug("%s\n" , __func__); |
56 | |
57 | msg = ieee802154_nl_create(flags: 0, req: IEEE802154_START_CONF); |
58 | if (!msg) |
59 | return -ENOBUFS; |
60 | |
61 | if (nla_put_string(skb: msg, attrtype: IEEE802154_ATTR_DEV_NAME, str: dev->name) || |
62 | nla_put_u32(skb: msg, attrtype: IEEE802154_ATTR_DEV_INDEX, value: dev->ifindex) || |
63 | nla_put(skb: msg, attrtype: IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN, |
64 | data: dev->dev_addr) || |
65 | nla_put_u8(skb: msg, attrtype: IEEE802154_ATTR_STATUS, value: status)) |
66 | goto nla_put_failure; |
67 | return ieee802154_nl_mcast(msg, group: IEEE802154_COORD_MCGRP); |
68 | |
69 | nla_put_failure: |
70 | nlmsg_free(skb: msg); |
71 | return -ENOBUFS; |
72 | } |
73 | |
74 | static int ieee802154_nl_fill_iface(struct sk_buff *msg, u32 portid, |
75 | u32 seq, int flags, struct net_device *dev) |
76 | { |
77 | void *hdr; |
78 | struct wpan_phy *phy; |
79 | struct ieee802154_mlme_ops *ops; |
80 | __le16 short_addr, pan_id; |
81 | |
82 | pr_debug("%s\n" , __func__); |
83 | |
84 | hdr = genlmsg_put(skb: msg, portid: 0, seq, family: &nl802154_family, flags, |
85 | cmd: IEEE802154_LIST_IFACE); |
86 | if (!hdr) |
87 | goto out; |
88 | |
89 | ops = ieee802154_mlme_ops(dev); |
90 | phy = dev->ieee802154_ptr->wpan_phy; |
91 | BUG_ON(!phy); |
92 | get_device(dev: &phy->dev); |
93 | |
94 | rtnl_lock(); |
95 | short_addr = dev->ieee802154_ptr->short_addr; |
96 | pan_id = dev->ieee802154_ptr->pan_id; |
97 | rtnl_unlock(); |
98 | |
99 | if (nla_put_string(skb: msg, attrtype: IEEE802154_ATTR_DEV_NAME, str: dev->name) || |
100 | nla_put_string(skb: msg, attrtype: IEEE802154_ATTR_PHY_NAME, str: wpan_phy_name(phy)) || |
101 | nla_put_u32(skb: msg, attrtype: IEEE802154_ATTR_DEV_INDEX, value: dev->ifindex) || |
102 | nla_put(skb: msg, attrtype: IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN, |
103 | data: dev->dev_addr) || |
104 | nla_put_shortaddr(msg, type: IEEE802154_ATTR_SHORT_ADDR, addr: short_addr) || |
105 | nla_put_shortaddr(msg, type: IEEE802154_ATTR_PAN_ID, addr: pan_id)) |
106 | goto nla_put_failure; |
107 | |
108 | if (ops->get_mac_params) { |
109 | struct ieee802154_mac_params params; |
110 | |
111 | rtnl_lock(); |
112 | ops->get_mac_params(dev, ¶ms); |
113 | rtnl_unlock(); |
114 | |
115 | if (nla_put_s8(skb: msg, attrtype: IEEE802154_ATTR_TXPOWER, |
116 | value: params.transmit_power / 100) || |
117 | nla_put_u8(skb: msg, attrtype: IEEE802154_ATTR_LBT_ENABLED, value: params.lbt) || |
118 | nla_put_u8(skb: msg, attrtype: IEEE802154_ATTR_CCA_MODE, |
119 | value: params.cca.mode) || |
120 | nla_put_s32(skb: msg, attrtype: IEEE802154_ATTR_CCA_ED_LEVEL, |
121 | value: params.cca_ed_level / 100) || |
122 | nla_put_u8(skb: msg, attrtype: IEEE802154_ATTR_CSMA_RETRIES, |
123 | value: params.csma_retries) || |
124 | nla_put_u8(skb: msg, attrtype: IEEE802154_ATTR_CSMA_MIN_BE, |
125 | value: params.min_be) || |
126 | nla_put_u8(skb: msg, attrtype: IEEE802154_ATTR_CSMA_MAX_BE, |
127 | value: params.max_be) || |
128 | nla_put_s8(skb: msg, attrtype: IEEE802154_ATTR_FRAME_RETRIES, |
129 | value: params.frame_retries)) |
130 | goto nla_put_failure; |
131 | } |
132 | |
133 | wpan_phy_put(phy); |
134 | genlmsg_end(skb: msg, hdr); |
135 | return 0; |
136 | |
137 | nla_put_failure: |
138 | wpan_phy_put(phy); |
139 | genlmsg_cancel(skb: msg, hdr); |
140 | out: |
141 | return -EMSGSIZE; |
142 | } |
143 | |
144 | /* Requests from userspace */ |
145 | static struct net_device *ieee802154_nl_get_dev(struct genl_info *info) |
146 | { |
147 | struct net_device *dev; |
148 | |
149 | if (info->attrs[IEEE802154_ATTR_DEV_NAME]) { |
150 | char name[IFNAMSIZ + 1]; |
151 | |
152 | nla_strscpy(dst: name, nla: info->attrs[IEEE802154_ATTR_DEV_NAME], |
153 | dstsize: sizeof(name)); |
154 | dev = dev_get_by_name(net: &init_net, name); |
155 | } else if (info->attrs[IEEE802154_ATTR_DEV_INDEX]) { |
156 | dev = dev_get_by_index(net: &init_net, |
157 | ifindex: nla_get_u32(nla: info->attrs[IEEE802154_ATTR_DEV_INDEX])); |
158 | } else { |
159 | return NULL; |
160 | } |
161 | |
162 | if (!dev) |
163 | return NULL; |
164 | |
165 | if (dev->type != ARPHRD_IEEE802154) { |
166 | dev_put(dev); |
167 | return NULL; |
168 | } |
169 | |
170 | return dev; |
171 | } |
172 | |
173 | int ieee802154_associate_req(struct sk_buff *skb, struct genl_info *info) |
174 | { |
175 | struct net_device *dev; |
176 | struct ieee802154_addr addr; |
177 | u8 page; |
178 | int ret = -EOPNOTSUPP; |
179 | |
180 | if (!info->attrs[IEEE802154_ATTR_CHANNEL] || |
181 | !info->attrs[IEEE802154_ATTR_COORD_PAN_ID] || |
182 | (!info->attrs[IEEE802154_ATTR_COORD_HW_ADDR] && |
183 | !info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR]) || |
184 | !info->attrs[IEEE802154_ATTR_CAPABILITY]) |
185 | return -EINVAL; |
186 | |
187 | dev = ieee802154_nl_get_dev(info); |
188 | if (!dev) |
189 | return -ENODEV; |
190 | if (!ieee802154_mlme_ops(dev)->assoc_req) |
191 | goto out; |
192 | |
193 | if (info->attrs[IEEE802154_ATTR_COORD_HW_ADDR]) { |
194 | addr.mode = IEEE802154_ADDR_LONG; |
195 | addr.extended_addr = nla_get_hwaddr( |
196 | nla: info->attrs[IEEE802154_ATTR_COORD_HW_ADDR]); |
197 | } else { |
198 | addr.mode = IEEE802154_ADDR_SHORT; |
199 | addr.short_addr = nla_get_shortaddr( |
200 | nla: info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR]); |
201 | } |
202 | addr.pan_id = nla_get_shortaddr( |
203 | nla: info->attrs[IEEE802154_ATTR_COORD_PAN_ID]); |
204 | |
205 | if (info->attrs[IEEE802154_ATTR_PAGE]) |
206 | page = nla_get_u8(nla: info->attrs[IEEE802154_ATTR_PAGE]); |
207 | else |
208 | page = 0; |
209 | |
210 | ret = ieee802154_mlme_ops(dev)->assoc_req(dev, &addr, |
211 | nla_get_u8(nla: info->attrs[IEEE802154_ATTR_CHANNEL]), |
212 | page, |
213 | nla_get_u8(nla: info->attrs[IEEE802154_ATTR_CAPABILITY])); |
214 | |
215 | out: |
216 | dev_put(dev); |
217 | return ret; |
218 | } |
219 | |
220 | int ieee802154_associate_resp(struct sk_buff *skb, struct genl_info *info) |
221 | { |
222 | struct net_device *dev; |
223 | struct ieee802154_addr addr; |
224 | int ret = -EOPNOTSUPP; |
225 | |
226 | if (!info->attrs[IEEE802154_ATTR_STATUS] || |
227 | !info->attrs[IEEE802154_ATTR_DEST_HW_ADDR] || |
228 | !info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]) |
229 | return -EINVAL; |
230 | |
231 | dev = ieee802154_nl_get_dev(info); |
232 | if (!dev) |
233 | return -ENODEV; |
234 | if (!ieee802154_mlme_ops(dev)->assoc_resp) |
235 | goto out; |
236 | |
237 | addr.mode = IEEE802154_ADDR_LONG; |
238 | addr.extended_addr = nla_get_hwaddr( |
239 | nla: info->attrs[IEEE802154_ATTR_DEST_HW_ADDR]); |
240 | rtnl_lock(); |
241 | addr.pan_id = dev->ieee802154_ptr->pan_id; |
242 | rtnl_unlock(); |
243 | |
244 | ret = ieee802154_mlme_ops(dev)->assoc_resp(dev, &addr, |
245 | nla_get_shortaddr(nla: info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]), |
246 | nla_get_u8(nla: info->attrs[IEEE802154_ATTR_STATUS])); |
247 | |
248 | out: |
249 | dev_put(dev); |
250 | return ret; |
251 | } |
252 | |
253 | int ieee802154_disassociate_req(struct sk_buff *skb, struct genl_info *info) |
254 | { |
255 | struct net_device *dev; |
256 | struct ieee802154_addr addr; |
257 | int ret = -EOPNOTSUPP; |
258 | |
259 | if ((!info->attrs[IEEE802154_ATTR_DEST_HW_ADDR] && |
260 | !info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]) || |
261 | !info->attrs[IEEE802154_ATTR_REASON]) |
262 | return -EINVAL; |
263 | |
264 | dev = ieee802154_nl_get_dev(info); |
265 | if (!dev) |
266 | return -ENODEV; |
267 | if (!ieee802154_mlme_ops(dev)->disassoc_req) |
268 | goto out; |
269 | |
270 | if (info->attrs[IEEE802154_ATTR_DEST_HW_ADDR]) { |
271 | addr.mode = IEEE802154_ADDR_LONG; |
272 | addr.extended_addr = nla_get_hwaddr( |
273 | nla: info->attrs[IEEE802154_ATTR_DEST_HW_ADDR]); |
274 | } else { |
275 | addr.mode = IEEE802154_ADDR_SHORT; |
276 | addr.short_addr = nla_get_shortaddr( |
277 | nla: info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]); |
278 | } |
279 | rtnl_lock(); |
280 | addr.pan_id = dev->ieee802154_ptr->pan_id; |
281 | rtnl_unlock(); |
282 | |
283 | ret = ieee802154_mlme_ops(dev)->disassoc_req(dev, &addr, |
284 | nla_get_u8(nla: info->attrs[IEEE802154_ATTR_REASON])); |
285 | |
286 | out: |
287 | dev_put(dev); |
288 | return ret; |
289 | } |
290 | |
291 | /* PANid, channel, beacon_order = 15, superframe_order = 15, |
292 | * PAN_coordinator, battery_life_extension = 0, |
293 | * coord_realignment = 0, security_enable = 0 |
294 | */ |
295 | int ieee802154_start_req(struct sk_buff *skb, struct genl_info *info) |
296 | { |
297 | struct net_device *dev; |
298 | struct ieee802154_addr addr; |
299 | |
300 | u8 channel, bcn_ord, sf_ord; |
301 | u8 page; |
302 | int pan_coord, blx, coord_realign; |
303 | int ret = -EBUSY; |
304 | |
305 | if (!info->attrs[IEEE802154_ATTR_COORD_PAN_ID] || |
306 | !info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR] || |
307 | !info->attrs[IEEE802154_ATTR_CHANNEL] || |
308 | !info->attrs[IEEE802154_ATTR_BCN_ORD] || |
309 | !info->attrs[IEEE802154_ATTR_SF_ORD] || |
310 | !info->attrs[IEEE802154_ATTR_PAN_COORD] || |
311 | !info->attrs[IEEE802154_ATTR_BAT_EXT] || |
312 | !info->attrs[IEEE802154_ATTR_COORD_REALIGN] |
313 | ) |
314 | return -EINVAL; |
315 | |
316 | dev = ieee802154_nl_get_dev(info); |
317 | if (!dev) |
318 | return -ENODEV; |
319 | |
320 | if (netif_running(dev)) |
321 | goto out; |
322 | |
323 | if (!ieee802154_mlme_ops(dev)->start_req) { |
324 | ret = -EOPNOTSUPP; |
325 | goto out; |
326 | } |
327 | |
328 | addr.mode = IEEE802154_ADDR_SHORT; |
329 | addr.short_addr = nla_get_shortaddr( |
330 | nla: info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR]); |
331 | addr.pan_id = nla_get_shortaddr( |
332 | nla: info->attrs[IEEE802154_ATTR_COORD_PAN_ID]); |
333 | |
334 | channel = nla_get_u8(nla: info->attrs[IEEE802154_ATTR_CHANNEL]); |
335 | bcn_ord = nla_get_u8(nla: info->attrs[IEEE802154_ATTR_BCN_ORD]); |
336 | sf_ord = nla_get_u8(nla: info->attrs[IEEE802154_ATTR_SF_ORD]); |
337 | pan_coord = nla_get_u8(nla: info->attrs[IEEE802154_ATTR_PAN_COORD]); |
338 | blx = nla_get_u8(nla: info->attrs[IEEE802154_ATTR_BAT_EXT]); |
339 | coord_realign = nla_get_u8(nla: info->attrs[IEEE802154_ATTR_COORD_REALIGN]); |
340 | |
341 | if (info->attrs[IEEE802154_ATTR_PAGE]) |
342 | page = nla_get_u8(nla: info->attrs[IEEE802154_ATTR_PAGE]); |
343 | else |
344 | page = 0; |
345 | |
346 | if (addr.short_addr == cpu_to_le16(IEEE802154_ADDR_BROADCAST)) { |
347 | ieee802154_nl_start_confirm(dev, status: IEEE802154_NO_SHORT_ADDRESS); |
348 | dev_put(dev); |
349 | return -EINVAL; |
350 | } |
351 | |
352 | rtnl_lock(); |
353 | ret = ieee802154_mlme_ops(dev)->start_req(dev, &addr, channel, page, |
354 | bcn_ord, sf_ord, pan_coord, blx, coord_realign); |
355 | rtnl_unlock(); |
356 | |
357 | /* FIXME: add validation for unused parameters to be sane |
358 | * for SoftMAC |
359 | */ |
360 | ieee802154_nl_start_confirm(dev, status: IEEE802154_SUCCESS); |
361 | |
362 | out: |
363 | dev_put(dev); |
364 | return ret; |
365 | } |
366 | |
367 | int ieee802154_scan_req(struct sk_buff *skb, struct genl_info *info) |
368 | { |
369 | struct net_device *dev; |
370 | int ret = -EOPNOTSUPP; |
371 | u8 type; |
372 | u32 channels; |
373 | u8 duration; |
374 | u8 page; |
375 | |
376 | if (!info->attrs[IEEE802154_ATTR_SCAN_TYPE] || |
377 | !info->attrs[IEEE802154_ATTR_CHANNELS] || |
378 | !info->attrs[IEEE802154_ATTR_DURATION]) |
379 | return -EINVAL; |
380 | |
381 | dev = ieee802154_nl_get_dev(info); |
382 | if (!dev) |
383 | return -ENODEV; |
384 | if (!ieee802154_mlme_ops(dev)->scan_req) |
385 | goto out; |
386 | |
387 | type = nla_get_u8(nla: info->attrs[IEEE802154_ATTR_SCAN_TYPE]); |
388 | channels = nla_get_u32(nla: info->attrs[IEEE802154_ATTR_CHANNELS]); |
389 | duration = nla_get_u8(nla: info->attrs[IEEE802154_ATTR_DURATION]); |
390 | |
391 | if (info->attrs[IEEE802154_ATTR_PAGE]) |
392 | page = nla_get_u8(nla: info->attrs[IEEE802154_ATTR_PAGE]); |
393 | else |
394 | page = 0; |
395 | |
396 | ret = ieee802154_mlme_ops(dev)->scan_req(dev, type, channels, |
397 | page, duration); |
398 | |
399 | out: |
400 | dev_put(dev); |
401 | return ret; |
402 | } |
403 | |
404 | int ieee802154_list_iface(struct sk_buff *skb, struct genl_info *info) |
405 | { |
406 | /* Request for interface name, index, type, IEEE address, |
407 | * PAN Id, short address |
408 | */ |
409 | struct sk_buff *msg; |
410 | struct net_device *dev = NULL; |
411 | int rc = -ENOBUFS; |
412 | |
413 | pr_debug("%s\n" , __func__); |
414 | |
415 | dev = ieee802154_nl_get_dev(info); |
416 | if (!dev) |
417 | return -ENODEV; |
418 | |
419 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
420 | if (!msg) |
421 | goto out_dev; |
422 | |
423 | rc = ieee802154_nl_fill_iface(msg, portid: info->snd_portid, seq: info->snd_seq, |
424 | flags: 0, dev); |
425 | if (rc < 0) |
426 | goto out_free; |
427 | |
428 | dev_put(dev); |
429 | |
430 | return genlmsg_reply(skb: msg, info); |
431 | out_free: |
432 | nlmsg_free(skb: msg); |
433 | out_dev: |
434 | dev_put(dev); |
435 | return rc; |
436 | } |
437 | |
438 | int ieee802154_dump_iface(struct sk_buff *skb, struct netlink_callback *cb) |
439 | { |
440 | struct net *net = sock_net(sk: skb->sk); |
441 | struct net_device *dev; |
442 | int idx; |
443 | int s_idx = cb->args[0]; |
444 | |
445 | pr_debug("%s\n" , __func__); |
446 | |
447 | idx = 0; |
448 | for_each_netdev(net, dev) { |
449 | if (idx < s_idx || dev->type != ARPHRD_IEEE802154) |
450 | goto cont; |
451 | |
452 | if (ieee802154_nl_fill_iface(msg: skb, NETLINK_CB(cb->skb).portid, |
453 | seq: cb->nlh->nlmsg_seq, |
454 | NLM_F_MULTI, dev) < 0) |
455 | break; |
456 | cont: |
457 | idx++; |
458 | } |
459 | cb->args[0] = idx; |
460 | |
461 | return skb->len; |
462 | } |
463 | |
464 | int ieee802154_set_macparams(struct sk_buff *skb, struct genl_info *info) |
465 | { |
466 | struct net_device *dev = NULL; |
467 | struct ieee802154_mlme_ops *ops; |
468 | struct ieee802154_mac_params params; |
469 | struct wpan_phy *phy; |
470 | int rc = -EINVAL; |
471 | |
472 | pr_debug("%s\n" , __func__); |
473 | |
474 | dev = ieee802154_nl_get_dev(info); |
475 | if (!dev) |
476 | return -ENODEV; |
477 | |
478 | ops = ieee802154_mlme_ops(dev); |
479 | |
480 | if (!ops->get_mac_params || !ops->set_mac_params) { |
481 | rc = -EOPNOTSUPP; |
482 | goto out; |
483 | } |
484 | |
485 | if (netif_running(dev)) { |
486 | rc = -EBUSY; |
487 | goto out; |
488 | } |
489 | |
490 | if (!info->attrs[IEEE802154_ATTR_LBT_ENABLED] && |
491 | !info->attrs[IEEE802154_ATTR_CCA_MODE] && |
492 | !info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL] && |
493 | !info->attrs[IEEE802154_ATTR_CSMA_RETRIES] && |
494 | !info->attrs[IEEE802154_ATTR_CSMA_MIN_BE] && |
495 | !info->attrs[IEEE802154_ATTR_CSMA_MAX_BE] && |
496 | !info->attrs[IEEE802154_ATTR_FRAME_RETRIES]) |
497 | goto out; |
498 | |
499 | phy = dev->ieee802154_ptr->wpan_phy; |
500 | get_device(dev: &phy->dev); |
501 | |
502 | rtnl_lock(); |
503 | ops->get_mac_params(dev, ¶ms); |
504 | |
505 | if (info->attrs[IEEE802154_ATTR_TXPOWER]) |
506 | params.transmit_power = nla_get_s8(nla: info->attrs[IEEE802154_ATTR_TXPOWER]) * 100; |
507 | |
508 | if (info->attrs[IEEE802154_ATTR_LBT_ENABLED]) |
509 | params.lbt = nla_get_u8(nla: info->attrs[IEEE802154_ATTR_LBT_ENABLED]); |
510 | |
511 | if (info->attrs[IEEE802154_ATTR_CCA_MODE]) |
512 | params.cca.mode = nla_get_u8(nla: info->attrs[IEEE802154_ATTR_CCA_MODE]); |
513 | |
514 | if (info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL]) |
515 | params.cca_ed_level = nla_get_s32(nla: info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL]) * 100; |
516 | |
517 | if (info->attrs[IEEE802154_ATTR_CSMA_RETRIES]) |
518 | params.csma_retries = nla_get_u8(nla: info->attrs[IEEE802154_ATTR_CSMA_RETRIES]); |
519 | |
520 | if (info->attrs[IEEE802154_ATTR_CSMA_MIN_BE]) |
521 | params.min_be = nla_get_u8(nla: info->attrs[IEEE802154_ATTR_CSMA_MIN_BE]); |
522 | |
523 | if (info->attrs[IEEE802154_ATTR_CSMA_MAX_BE]) |
524 | params.max_be = nla_get_u8(nla: info->attrs[IEEE802154_ATTR_CSMA_MAX_BE]); |
525 | |
526 | if (info->attrs[IEEE802154_ATTR_FRAME_RETRIES]) |
527 | params.frame_retries = nla_get_s8(nla: info->attrs[IEEE802154_ATTR_FRAME_RETRIES]); |
528 | |
529 | rc = ops->set_mac_params(dev, ¶ms); |
530 | rtnl_unlock(); |
531 | |
532 | wpan_phy_put(phy); |
533 | dev_put(dev); |
534 | |
535 | return 0; |
536 | |
537 | out: |
538 | dev_put(dev); |
539 | return rc; |
540 | } |
541 | |
542 | static int |
543 | ieee802154_llsec_parse_key_id(struct genl_info *info, |
544 | struct ieee802154_llsec_key_id *desc) |
545 | { |
546 | memset(desc, 0, sizeof(*desc)); |
547 | |
548 | if (!info->attrs[IEEE802154_ATTR_LLSEC_KEY_MODE]) |
549 | return -EINVAL; |
550 | |
551 | desc->mode = nla_get_u8(nla: info->attrs[IEEE802154_ATTR_LLSEC_KEY_MODE]); |
552 | |
553 | if (desc->mode == IEEE802154_SCF_KEY_IMPLICIT) { |
554 | if (!info->attrs[IEEE802154_ATTR_PAN_ID]) |
555 | return -EINVAL; |
556 | |
557 | desc->device_addr.pan_id = nla_get_shortaddr(nla: info->attrs[IEEE802154_ATTR_PAN_ID]); |
558 | |
559 | if (info->attrs[IEEE802154_ATTR_SHORT_ADDR]) { |
560 | desc->device_addr.mode = IEEE802154_ADDR_SHORT; |
561 | desc->device_addr.short_addr = nla_get_shortaddr(nla: info->attrs[IEEE802154_ATTR_SHORT_ADDR]); |
562 | } else { |
563 | if (!info->attrs[IEEE802154_ATTR_HW_ADDR]) |
564 | return -EINVAL; |
565 | |
566 | desc->device_addr.mode = IEEE802154_ADDR_LONG; |
567 | desc->device_addr.extended_addr = nla_get_hwaddr(nla: info->attrs[IEEE802154_ATTR_HW_ADDR]); |
568 | } |
569 | } |
570 | |
571 | if (desc->mode != IEEE802154_SCF_KEY_IMPLICIT && |
572 | !info->attrs[IEEE802154_ATTR_LLSEC_KEY_ID]) |
573 | return -EINVAL; |
574 | |
575 | if (desc->mode == IEEE802154_SCF_KEY_SHORT_INDEX && |
576 | !info->attrs[IEEE802154_ATTR_LLSEC_KEY_SOURCE_SHORT]) |
577 | return -EINVAL; |
578 | |
579 | if (desc->mode == IEEE802154_SCF_KEY_HW_INDEX && |
580 | !info->attrs[IEEE802154_ATTR_LLSEC_KEY_SOURCE_EXTENDED]) |
581 | return -EINVAL; |
582 | |
583 | if (desc->mode != IEEE802154_SCF_KEY_IMPLICIT) |
584 | desc->id = nla_get_u8(nla: info->attrs[IEEE802154_ATTR_LLSEC_KEY_ID]); |
585 | |
586 | switch (desc->mode) { |
587 | case IEEE802154_SCF_KEY_SHORT_INDEX: |
588 | { |
589 | u32 source = nla_get_u32(nla: info->attrs[IEEE802154_ATTR_LLSEC_KEY_SOURCE_SHORT]); |
590 | |
591 | desc->short_source = cpu_to_le32(source); |
592 | break; |
593 | } |
594 | case IEEE802154_SCF_KEY_HW_INDEX: |
595 | desc->extended_source = nla_get_hwaddr(nla: info->attrs[IEEE802154_ATTR_LLSEC_KEY_SOURCE_EXTENDED]); |
596 | break; |
597 | } |
598 | |
599 | return 0; |
600 | } |
601 | |
602 | static int |
603 | ieee802154_llsec_fill_key_id(struct sk_buff *msg, |
604 | const struct ieee802154_llsec_key_id *desc) |
605 | { |
606 | if (nla_put_u8(skb: msg, attrtype: IEEE802154_ATTR_LLSEC_KEY_MODE, value: desc->mode)) |
607 | return -EMSGSIZE; |
608 | |
609 | if (desc->mode == IEEE802154_SCF_KEY_IMPLICIT) { |
610 | if (nla_put_shortaddr(msg, type: IEEE802154_ATTR_PAN_ID, |
611 | addr: desc->device_addr.pan_id)) |
612 | return -EMSGSIZE; |
613 | |
614 | if (desc->device_addr.mode == IEEE802154_ADDR_SHORT && |
615 | nla_put_shortaddr(msg, type: IEEE802154_ATTR_SHORT_ADDR, |
616 | addr: desc->device_addr.short_addr)) |
617 | return -EMSGSIZE; |
618 | |
619 | if (desc->device_addr.mode == IEEE802154_ADDR_LONG && |
620 | nla_put_hwaddr(msg, type: IEEE802154_ATTR_HW_ADDR, |
621 | hwaddr: desc->device_addr.extended_addr, |
622 | padattr: IEEE802154_ATTR_PAD)) |
623 | return -EMSGSIZE; |
624 | } |
625 | |
626 | if (desc->mode != IEEE802154_SCF_KEY_IMPLICIT && |
627 | nla_put_u8(skb: msg, attrtype: IEEE802154_ATTR_LLSEC_KEY_ID, value: desc->id)) |
628 | return -EMSGSIZE; |
629 | |
630 | if (desc->mode == IEEE802154_SCF_KEY_SHORT_INDEX && |
631 | nla_put_u32(skb: msg, attrtype: IEEE802154_ATTR_LLSEC_KEY_SOURCE_SHORT, |
632 | le32_to_cpu(desc->short_source))) |
633 | return -EMSGSIZE; |
634 | |
635 | if (desc->mode == IEEE802154_SCF_KEY_HW_INDEX && |
636 | nla_put_hwaddr(msg, type: IEEE802154_ATTR_LLSEC_KEY_SOURCE_EXTENDED, |
637 | hwaddr: desc->extended_source, padattr: IEEE802154_ATTR_PAD)) |
638 | return -EMSGSIZE; |
639 | |
640 | return 0; |
641 | } |
642 | |
643 | int ieee802154_llsec_getparams(struct sk_buff *skb, struct genl_info *info) |
644 | { |
645 | struct sk_buff *msg; |
646 | struct net_device *dev = NULL; |
647 | int rc = -ENOBUFS; |
648 | struct ieee802154_mlme_ops *ops; |
649 | void *hdr; |
650 | struct ieee802154_llsec_params params; |
651 | |
652 | pr_debug("%s\n" , __func__); |
653 | |
654 | dev = ieee802154_nl_get_dev(info); |
655 | if (!dev) |
656 | return -ENODEV; |
657 | |
658 | ops = ieee802154_mlme_ops(dev); |
659 | if (!ops->llsec) { |
660 | rc = -EOPNOTSUPP; |
661 | goto out_dev; |
662 | } |
663 | |
664 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
665 | if (!msg) |
666 | goto out_dev; |
667 | |
668 | hdr = genlmsg_put(skb: msg, portid: 0, seq: info->snd_seq, family: &nl802154_family, flags: 0, |
669 | cmd: IEEE802154_LLSEC_GETPARAMS); |
670 | if (!hdr) |
671 | goto out_free; |
672 | |
673 | rc = ops->llsec->get_params(dev, ¶ms); |
674 | if (rc < 0) |
675 | goto out_free; |
676 | |
677 | if (nla_put_string(skb: msg, attrtype: IEEE802154_ATTR_DEV_NAME, str: dev->name) || |
678 | nla_put_u32(skb: msg, attrtype: IEEE802154_ATTR_DEV_INDEX, value: dev->ifindex) || |
679 | nla_put_u8(skb: msg, attrtype: IEEE802154_ATTR_LLSEC_ENABLED, value: params.enabled) || |
680 | nla_put_u8(skb: msg, attrtype: IEEE802154_ATTR_LLSEC_SECLEVEL, value: params.out_level) || |
681 | nla_put_u32(skb: msg, attrtype: IEEE802154_ATTR_LLSEC_FRAME_COUNTER, |
682 | be32_to_cpu(params.frame_counter)) || |
683 | ieee802154_llsec_fill_key_id(msg, desc: ¶ms.out_key)) { |
684 | rc = -ENOBUFS; |
685 | goto out_free; |
686 | } |
687 | |
688 | dev_put(dev); |
689 | |
690 | return ieee802154_nl_reply(msg, info); |
691 | out_free: |
692 | nlmsg_free(skb: msg); |
693 | out_dev: |
694 | dev_put(dev); |
695 | return rc; |
696 | } |
697 | |
698 | int ieee802154_llsec_setparams(struct sk_buff *skb, struct genl_info *info) |
699 | { |
700 | struct net_device *dev = NULL; |
701 | int rc = -EINVAL; |
702 | struct ieee802154_mlme_ops *ops; |
703 | struct ieee802154_llsec_params params; |
704 | int changed = 0; |
705 | |
706 | pr_debug("%s\n" , __func__); |
707 | |
708 | dev = ieee802154_nl_get_dev(info); |
709 | if (!dev) |
710 | return -ENODEV; |
711 | |
712 | if (!info->attrs[IEEE802154_ATTR_LLSEC_ENABLED] && |
713 | !info->attrs[IEEE802154_ATTR_LLSEC_KEY_MODE] && |
714 | !info->attrs[IEEE802154_ATTR_LLSEC_SECLEVEL]) |
715 | goto out; |
716 | |
717 | ops = ieee802154_mlme_ops(dev); |
718 | if (!ops->llsec) { |
719 | rc = -EOPNOTSUPP; |
720 | goto out; |
721 | } |
722 | |
723 | if (info->attrs[IEEE802154_ATTR_LLSEC_SECLEVEL] && |
724 | nla_get_u8(nla: info->attrs[IEEE802154_ATTR_LLSEC_SECLEVEL]) > 7) |
725 | goto out; |
726 | |
727 | if (info->attrs[IEEE802154_ATTR_LLSEC_ENABLED]) { |
728 | params.enabled = nla_get_u8(nla: info->attrs[IEEE802154_ATTR_LLSEC_ENABLED]); |
729 | changed |= IEEE802154_LLSEC_PARAM_ENABLED; |
730 | } |
731 | |
732 | if (info->attrs[IEEE802154_ATTR_LLSEC_KEY_MODE]) { |
733 | if (ieee802154_llsec_parse_key_id(info, desc: ¶ms.out_key)) |
734 | goto out; |
735 | |
736 | changed |= IEEE802154_LLSEC_PARAM_OUT_KEY; |
737 | } |
738 | |
739 | if (info->attrs[IEEE802154_ATTR_LLSEC_SECLEVEL]) { |
740 | params.out_level = nla_get_u8(nla: info->attrs[IEEE802154_ATTR_LLSEC_SECLEVEL]); |
741 | changed |= IEEE802154_LLSEC_PARAM_OUT_LEVEL; |
742 | } |
743 | |
744 | if (info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER]) { |
745 | u32 fc = nla_get_u32(nla: info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER]); |
746 | |
747 | params.frame_counter = cpu_to_be32(fc); |
748 | changed |= IEEE802154_LLSEC_PARAM_FRAME_COUNTER; |
749 | } |
750 | |
751 | rc = ops->llsec->set_params(dev, ¶ms, changed); |
752 | |
753 | dev_put(dev); |
754 | |
755 | return rc; |
756 | out: |
757 | dev_put(dev); |
758 | return rc; |
759 | } |
760 | |
761 | struct llsec_dump_data { |
762 | struct sk_buff *skb; |
763 | int s_idx, s_idx2; |
764 | int portid; |
765 | int nlmsg_seq; |
766 | struct net_device *dev; |
767 | struct ieee802154_mlme_ops *ops; |
768 | struct ieee802154_llsec_table *table; |
769 | }; |
770 | |
771 | static int |
772 | ieee802154_llsec_dump_table(struct sk_buff *skb, struct netlink_callback *cb, |
773 | int (*step)(struct llsec_dump_data *)) |
774 | { |
775 | struct net *net = sock_net(sk: skb->sk); |
776 | struct net_device *dev; |
777 | struct llsec_dump_data data; |
778 | int idx = 0; |
779 | int first_dev = cb->args[0]; |
780 | int rc; |
781 | |
782 | for_each_netdev(net, dev) { |
783 | if (idx < first_dev || dev->type != ARPHRD_IEEE802154) |
784 | goto skip; |
785 | |
786 | data.ops = ieee802154_mlme_ops(dev); |
787 | if (!data.ops->llsec) |
788 | goto skip; |
789 | |
790 | data.skb = skb; |
791 | data.s_idx = cb->args[1]; |
792 | data.s_idx2 = cb->args[2]; |
793 | data.dev = dev; |
794 | data.portid = NETLINK_CB(cb->skb).portid; |
795 | data.nlmsg_seq = cb->nlh->nlmsg_seq; |
796 | |
797 | data.ops->llsec->lock_table(dev); |
798 | data.ops->llsec->get_table(data.dev, &data.table); |
799 | rc = step(&data); |
800 | data.ops->llsec->unlock_table(dev); |
801 | |
802 | if (rc < 0) |
803 | break; |
804 | |
805 | skip: |
806 | idx++; |
807 | } |
808 | cb->args[0] = idx; |
809 | |
810 | return skb->len; |
811 | } |
812 | |
813 | static int |
814 | ieee802154_nl_llsec_change(struct sk_buff *skb, struct genl_info *info, |
815 | int (*fn)(struct net_device*, struct genl_info*)) |
816 | { |
817 | struct net_device *dev = NULL; |
818 | int rc = -EINVAL; |
819 | |
820 | dev = ieee802154_nl_get_dev(info); |
821 | if (!dev) |
822 | return -ENODEV; |
823 | |
824 | if (!ieee802154_mlme_ops(dev)->llsec) |
825 | rc = -EOPNOTSUPP; |
826 | else |
827 | rc = fn(dev, info); |
828 | |
829 | dev_put(dev); |
830 | return rc; |
831 | } |
832 | |
833 | static int |
834 | ieee802154_llsec_parse_key(struct genl_info *info, |
835 | struct ieee802154_llsec_key *key) |
836 | { |
837 | u8 frames; |
838 | u32 commands[256 / 32]; |
839 | |
840 | memset(key, 0, sizeof(*key)); |
841 | |
842 | if (!info->attrs[IEEE802154_ATTR_LLSEC_KEY_USAGE_FRAME_TYPES] || |
843 | !info->attrs[IEEE802154_ATTR_LLSEC_KEY_BYTES]) |
844 | return -EINVAL; |
845 | |
846 | frames = nla_get_u8(nla: info->attrs[IEEE802154_ATTR_LLSEC_KEY_USAGE_FRAME_TYPES]); |
847 | if ((frames & BIT(IEEE802154_FC_TYPE_MAC_CMD)) && |
848 | !info->attrs[IEEE802154_ATTR_LLSEC_KEY_USAGE_COMMANDS]) |
849 | return -EINVAL; |
850 | |
851 | if (info->attrs[IEEE802154_ATTR_LLSEC_KEY_USAGE_COMMANDS]) { |
852 | nla_memcpy(dest: commands, |
853 | src: info->attrs[IEEE802154_ATTR_LLSEC_KEY_USAGE_COMMANDS], |
854 | count: 256 / 8); |
855 | |
856 | if (commands[0] || commands[1] || commands[2] || commands[3] || |
857 | commands[4] || commands[5] || commands[6] || |
858 | commands[7] >= BIT(IEEE802154_CMD_GTS_REQ + 1)) |
859 | return -EINVAL; |
860 | |
861 | key->cmd_frame_ids = commands[7]; |
862 | } |
863 | |
864 | key->frame_types = frames; |
865 | |
866 | nla_memcpy(dest: key->key, src: info->attrs[IEEE802154_ATTR_LLSEC_KEY_BYTES], |
867 | IEEE802154_LLSEC_KEY_SIZE); |
868 | |
869 | return 0; |
870 | } |
871 | |
872 | static int llsec_add_key(struct net_device *dev, struct genl_info *info) |
873 | { |
874 | struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev); |
875 | struct ieee802154_llsec_key key; |
876 | struct ieee802154_llsec_key_id id; |
877 | |
878 | if (ieee802154_llsec_parse_key(info, key: &key) || |
879 | ieee802154_llsec_parse_key_id(info, desc: &id)) |
880 | return -EINVAL; |
881 | |
882 | return ops->llsec->add_key(dev, &id, &key); |
883 | } |
884 | |
885 | int ieee802154_llsec_add_key(struct sk_buff *skb, struct genl_info *info) |
886 | { |
887 | if ((info->nlhdr->nlmsg_flags & (NLM_F_CREATE | NLM_F_EXCL)) != |
888 | (NLM_F_CREATE | NLM_F_EXCL)) |
889 | return -EINVAL; |
890 | |
891 | return ieee802154_nl_llsec_change(skb, info, fn: llsec_add_key); |
892 | } |
893 | |
894 | static int llsec_remove_key(struct net_device *dev, struct genl_info *info) |
895 | { |
896 | struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev); |
897 | struct ieee802154_llsec_key_id id; |
898 | |
899 | if (ieee802154_llsec_parse_key_id(info, desc: &id)) |
900 | return -EINVAL; |
901 | |
902 | return ops->llsec->del_key(dev, &id); |
903 | } |
904 | |
905 | int ieee802154_llsec_del_key(struct sk_buff *skb, struct genl_info *info) |
906 | { |
907 | return ieee802154_nl_llsec_change(skb, info, fn: llsec_remove_key); |
908 | } |
909 | |
910 | static int |
911 | ieee802154_nl_fill_key(struct sk_buff *msg, u32 portid, u32 seq, |
912 | const struct ieee802154_llsec_key_entry *key, |
913 | const struct net_device *dev) |
914 | { |
915 | void *hdr; |
916 | u32 commands[256 / 32]; |
917 | |
918 | hdr = genlmsg_put(skb: msg, portid: 0, seq, family: &nl802154_family, NLM_F_MULTI, |
919 | cmd: IEEE802154_LLSEC_LIST_KEY); |
920 | if (!hdr) |
921 | goto out; |
922 | |
923 | if (nla_put_string(skb: msg, attrtype: IEEE802154_ATTR_DEV_NAME, str: dev->name) || |
924 | nla_put_u32(skb: msg, attrtype: IEEE802154_ATTR_DEV_INDEX, value: dev->ifindex) || |
925 | ieee802154_llsec_fill_key_id(msg, desc: &key->id) || |
926 | nla_put_u8(skb: msg, attrtype: IEEE802154_ATTR_LLSEC_KEY_USAGE_FRAME_TYPES, |
927 | value: key->key->frame_types)) |
928 | goto nla_put_failure; |
929 | |
930 | if (key->key->frame_types & BIT(IEEE802154_FC_TYPE_MAC_CMD)) { |
931 | memset(commands, 0, sizeof(commands)); |
932 | commands[7] = key->key->cmd_frame_ids; |
933 | if (nla_put(skb: msg, attrtype: IEEE802154_ATTR_LLSEC_KEY_USAGE_COMMANDS, |
934 | attrlen: sizeof(commands), data: commands)) |
935 | goto nla_put_failure; |
936 | } |
937 | |
938 | if (nla_put(skb: msg, attrtype: IEEE802154_ATTR_LLSEC_KEY_BYTES, |
939 | IEEE802154_LLSEC_KEY_SIZE, data: key->key->key)) |
940 | goto nla_put_failure; |
941 | |
942 | genlmsg_end(skb: msg, hdr); |
943 | return 0; |
944 | |
945 | nla_put_failure: |
946 | genlmsg_cancel(skb: msg, hdr); |
947 | out: |
948 | return -EMSGSIZE; |
949 | } |
950 | |
951 | static int llsec_iter_keys(struct llsec_dump_data *data) |
952 | { |
953 | struct ieee802154_llsec_key_entry *pos; |
954 | int rc = 0, idx = 0; |
955 | |
956 | list_for_each_entry(pos, &data->table->keys, list) { |
957 | if (idx++ < data->s_idx) |
958 | continue; |
959 | |
960 | if (ieee802154_nl_fill_key(msg: data->skb, portid: data->portid, |
961 | seq: data->nlmsg_seq, key: pos, dev: data->dev)) { |
962 | rc = -EMSGSIZE; |
963 | break; |
964 | } |
965 | |
966 | data->s_idx++; |
967 | } |
968 | |
969 | return rc; |
970 | } |
971 | |
972 | int ieee802154_llsec_dump_keys(struct sk_buff *skb, struct netlink_callback *cb) |
973 | { |
974 | return ieee802154_llsec_dump_table(skb, cb, step: llsec_iter_keys); |
975 | } |
976 | |
977 | static int |
978 | llsec_parse_dev(struct genl_info *info, |
979 | struct ieee802154_llsec_device *dev) |
980 | { |
981 | memset(dev, 0, sizeof(*dev)); |
982 | |
983 | if (!info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER] || |
984 | !info->attrs[IEEE802154_ATTR_HW_ADDR] || |
985 | !info->attrs[IEEE802154_ATTR_LLSEC_DEV_OVERRIDE] || |
986 | !info->attrs[IEEE802154_ATTR_LLSEC_DEV_KEY_MODE] || |
987 | (!!info->attrs[IEEE802154_ATTR_PAN_ID] != |
988 | !!info->attrs[IEEE802154_ATTR_SHORT_ADDR])) |
989 | return -EINVAL; |
990 | |
991 | if (info->attrs[IEEE802154_ATTR_PAN_ID]) { |
992 | dev->pan_id = nla_get_shortaddr(nla: info->attrs[IEEE802154_ATTR_PAN_ID]); |
993 | dev->short_addr = nla_get_shortaddr(nla: info->attrs[IEEE802154_ATTR_SHORT_ADDR]); |
994 | } else { |
995 | dev->short_addr = cpu_to_le16(IEEE802154_ADDR_UNDEF); |
996 | } |
997 | |
998 | dev->hwaddr = nla_get_hwaddr(nla: info->attrs[IEEE802154_ATTR_HW_ADDR]); |
999 | dev->frame_counter = nla_get_u32(nla: info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER]); |
1000 | dev->seclevel_exempt = !!nla_get_u8(nla: info->attrs[IEEE802154_ATTR_LLSEC_DEV_OVERRIDE]); |
1001 | dev->key_mode = nla_get_u8(nla: info->attrs[IEEE802154_ATTR_LLSEC_DEV_KEY_MODE]); |
1002 | |
1003 | if (dev->key_mode >= __IEEE802154_LLSEC_DEVKEY_MAX) |
1004 | return -EINVAL; |
1005 | |
1006 | return 0; |
1007 | } |
1008 | |
1009 | static int llsec_add_dev(struct net_device *dev, struct genl_info *info) |
1010 | { |
1011 | struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev); |
1012 | struct ieee802154_llsec_device desc; |
1013 | |
1014 | if (llsec_parse_dev(info, dev: &desc)) |
1015 | return -EINVAL; |
1016 | |
1017 | return ops->llsec->add_dev(dev, &desc); |
1018 | } |
1019 | |
1020 | int ieee802154_llsec_add_dev(struct sk_buff *skb, struct genl_info *info) |
1021 | { |
1022 | if ((info->nlhdr->nlmsg_flags & (NLM_F_CREATE | NLM_F_EXCL)) != |
1023 | (NLM_F_CREATE | NLM_F_EXCL)) |
1024 | return -EINVAL; |
1025 | |
1026 | return ieee802154_nl_llsec_change(skb, info, fn: llsec_add_dev); |
1027 | } |
1028 | |
1029 | static int llsec_del_dev(struct net_device *dev, struct genl_info *info) |
1030 | { |
1031 | struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev); |
1032 | __le64 devaddr; |
1033 | |
1034 | if (!info->attrs[IEEE802154_ATTR_HW_ADDR]) |
1035 | return -EINVAL; |
1036 | |
1037 | devaddr = nla_get_hwaddr(nla: info->attrs[IEEE802154_ATTR_HW_ADDR]); |
1038 | |
1039 | return ops->llsec->del_dev(dev, devaddr); |
1040 | } |
1041 | |
1042 | int ieee802154_llsec_del_dev(struct sk_buff *skb, struct genl_info *info) |
1043 | { |
1044 | return ieee802154_nl_llsec_change(skb, info, fn: llsec_del_dev); |
1045 | } |
1046 | |
1047 | static int |
1048 | ieee802154_nl_fill_dev(struct sk_buff *msg, u32 portid, u32 seq, |
1049 | const struct ieee802154_llsec_device *desc, |
1050 | const struct net_device *dev) |
1051 | { |
1052 | void *hdr; |
1053 | |
1054 | hdr = genlmsg_put(skb: msg, portid: 0, seq, family: &nl802154_family, NLM_F_MULTI, |
1055 | cmd: IEEE802154_LLSEC_LIST_DEV); |
1056 | if (!hdr) |
1057 | goto out; |
1058 | |
1059 | if (nla_put_string(skb: msg, attrtype: IEEE802154_ATTR_DEV_NAME, str: dev->name) || |
1060 | nla_put_u32(skb: msg, attrtype: IEEE802154_ATTR_DEV_INDEX, value: dev->ifindex) || |
1061 | nla_put_shortaddr(msg, type: IEEE802154_ATTR_PAN_ID, addr: desc->pan_id) || |
1062 | nla_put_shortaddr(msg, type: IEEE802154_ATTR_SHORT_ADDR, |
1063 | addr: desc->short_addr) || |
1064 | nla_put_hwaddr(msg, type: IEEE802154_ATTR_HW_ADDR, hwaddr: desc->hwaddr, |
1065 | padattr: IEEE802154_ATTR_PAD) || |
1066 | nla_put_u32(skb: msg, attrtype: IEEE802154_ATTR_LLSEC_FRAME_COUNTER, |
1067 | value: desc->frame_counter) || |
1068 | nla_put_u8(skb: msg, attrtype: IEEE802154_ATTR_LLSEC_DEV_OVERRIDE, |
1069 | value: desc->seclevel_exempt) || |
1070 | nla_put_u8(skb: msg, attrtype: IEEE802154_ATTR_LLSEC_DEV_KEY_MODE, value: desc->key_mode)) |
1071 | goto nla_put_failure; |
1072 | |
1073 | genlmsg_end(skb: msg, hdr); |
1074 | return 0; |
1075 | |
1076 | nla_put_failure: |
1077 | genlmsg_cancel(skb: msg, hdr); |
1078 | out: |
1079 | return -EMSGSIZE; |
1080 | } |
1081 | |
1082 | static int llsec_iter_devs(struct llsec_dump_data *data) |
1083 | { |
1084 | struct ieee802154_llsec_device *pos; |
1085 | int rc = 0, idx = 0; |
1086 | |
1087 | list_for_each_entry(pos, &data->table->devices, list) { |
1088 | if (idx++ < data->s_idx) |
1089 | continue; |
1090 | |
1091 | if (ieee802154_nl_fill_dev(msg: data->skb, portid: data->portid, |
1092 | seq: data->nlmsg_seq, desc: pos, dev: data->dev)) { |
1093 | rc = -EMSGSIZE; |
1094 | break; |
1095 | } |
1096 | |
1097 | data->s_idx++; |
1098 | } |
1099 | |
1100 | return rc; |
1101 | } |
1102 | |
1103 | int ieee802154_llsec_dump_devs(struct sk_buff *skb, struct netlink_callback *cb) |
1104 | { |
1105 | return ieee802154_llsec_dump_table(skb, cb, step: llsec_iter_devs); |
1106 | } |
1107 | |
1108 | static int llsec_add_devkey(struct net_device *dev, struct genl_info *info) |
1109 | { |
1110 | struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev); |
1111 | struct ieee802154_llsec_device_key key; |
1112 | __le64 devaddr; |
1113 | |
1114 | if (!info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER] || |
1115 | !info->attrs[IEEE802154_ATTR_HW_ADDR] || |
1116 | ieee802154_llsec_parse_key_id(info, desc: &key.key_id)) |
1117 | return -EINVAL; |
1118 | |
1119 | devaddr = nla_get_hwaddr(nla: info->attrs[IEEE802154_ATTR_HW_ADDR]); |
1120 | key.frame_counter = nla_get_u32(nla: info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER]); |
1121 | |
1122 | return ops->llsec->add_devkey(dev, devaddr, &key); |
1123 | } |
1124 | |
1125 | int ieee802154_llsec_add_devkey(struct sk_buff *skb, struct genl_info *info) |
1126 | { |
1127 | if ((info->nlhdr->nlmsg_flags & (NLM_F_CREATE | NLM_F_EXCL)) != |
1128 | (NLM_F_CREATE | NLM_F_EXCL)) |
1129 | return -EINVAL; |
1130 | |
1131 | return ieee802154_nl_llsec_change(skb, info, fn: llsec_add_devkey); |
1132 | } |
1133 | |
1134 | static int llsec_del_devkey(struct net_device *dev, struct genl_info *info) |
1135 | { |
1136 | struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev); |
1137 | struct ieee802154_llsec_device_key key; |
1138 | __le64 devaddr; |
1139 | |
1140 | if (!info->attrs[IEEE802154_ATTR_HW_ADDR] || |
1141 | ieee802154_llsec_parse_key_id(info, desc: &key.key_id)) |
1142 | return -EINVAL; |
1143 | |
1144 | devaddr = nla_get_hwaddr(nla: info->attrs[IEEE802154_ATTR_HW_ADDR]); |
1145 | |
1146 | return ops->llsec->del_devkey(dev, devaddr, &key); |
1147 | } |
1148 | |
1149 | int ieee802154_llsec_del_devkey(struct sk_buff *skb, struct genl_info *info) |
1150 | { |
1151 | return ieee802154_nl_llsec_change(skb, info, fn: llsec_del_devkey); |
1152 | } |
1153 | |
1154 | static int |
1155 | ieee802154_nl_fill_devkey(struct sk_buff *msg, u32 portid, u32 seq, |
1156 | __le64 devaddr, |
1157 | const struct ieee802154_llsec_device_key *devkey, |
1158 | const struct net_device *dev) |
1159 | { |
1160 | void *hdr; |
1161 | |
1162 | hdr = genlmsg_put(skb: msg, portid: 0, seq, family: &nl802154_family, NLM_F_MULTI, |
1163 | cmd: IEEE802154_LLSEC_LIST_DEVKEY); |
1164 | if (!hdr) |
1165 | goto out; |
1166 | |
1167 | if (nla_put_string(skb: msg, attrtype: IEEE802154_ATTR_DEV_NAME, str: dev->name) || |
1168 | nla_put_u32(skb: msg, attrtype: IEEE802154_ATTR_DEV_INDEX, value: dev->ifindex) || |
1169 | nla_put_hwaddr(msg, type: IEEE802154_ATTR_HW_ADDR, hwaddr: devaddr, |
1170 | padattr: IEEE802154_ATTR_PAD) || |
1171 | nla_put_u32(skb: msg, attrtype: IEEE802154_ATTR_LLSEC_FRAME_COUNTER, |
1172 | value: devkey->frame_counter) || |
1173 | ieee802154_llsec_fill_key_id(msg, desc: &devkey->key_id)) |
1174 | goto nla_put_failure; |
1175 | |
1176 | genlmsg_end(skb: msg, hdr); |
1177 | return 0; |
1178 | |
1179 | nla_put_failure: |
1180 | genlmsg_cancel(skb: msg, hdr); |
1181 | out: |
1182 | return -EMSGSIZE; |
1183 | } |
1184 | |
1185 | static int llsec_iter_devkeys(struct llsec_dump_data *data) |
1186 | { |
1187 | struct ieee802154_llsec_device *dpos; |
1188 | struct ieee802154_llsec_device_key *kpos; |
1189 | int idx = 0, idx2; |
1190 | |
1191 | list_for_each_entry(dpos, &data->table->devices, list) { |
1192 | if (idx++ < data->s_idx) |
1193 | continue; |
1194 | |
1195 | idx2 = 0; |
1196 | |
1197 | list_for_each_entry(kpos, &dpos->keys, list) { |
1198 | if (idx2++ < data->s_idx2) |
1199 | continue; |
1200 | |
1201 | if (ieee802154_nl_fill_devkey(msg: data->skb, portid: data->portid, |
1202 | seq: data->nlmsg_seq, |
1203 | devaddr: dpos->hwaddr, devkey: kpos, |
1204 | dev: data->dev)) { |
1205 | return -EMSGSIZE; |
1206 | } |
1207 | |
1208 | data->s_idx2++; |
1209 | } |
1210 | |
1211 | data->s_idx++; |
1212 | } |
1213 | |
1214 | return 0; |
1215 | } |
1216 | |
1217 | int ieee802154_llsec_dump_devkeys(struct sk_buff *skb, |
1218 | struct netlink_callback *cb) |
1219 | { |
1220 | return ieee802154_llsec_dump_table(skb, cb, step: llsec_iter_devkeys); |
1221 | } |
1222 | |
1223 | static int |
1224 | llsec_parse_seclevel(struct genl_info *info, |
1225 | struct ieee802154_llsec_seclevel *sl) |
1226 | { |
1227 | memset(sl, 0, sizeof(*sl)); |
1228 | |
1229 | if (!info->attrs[IEEE802154_ATTR_LLSEC_FRAME_TYPE] || |
1230 | !info->attrs[IEEE802154_ATTR_LLSEC_SECLEVELS] || |
1231 | !info->attrs[IEEE802154_ATTR_LLSEC_DEV_OVERRIDE]) |
1232 | return -EINVAL; |
1233 | |
1234 | sl->frame_type = nla_get_u8(nla: info->attrs[IEEE802154_ATTR_LLSEC_FRAME_TYPE]); |
1235 | if (sl->frame_type == IEEE802154_FC_TYPE_MAC_CMD) { |
1236 | if (!info->attrs[IEEE802154_ATTR_LLSEC_CMD_FRAME_ID]) |
1237 | return -EINVAL; |
1238 | |
1239 | sl->cmd_frame_id = nla_get_u8(nla: info->attrs[IEEE802154_ATTR_LLSEC_CMD_FRAME_ID]); |
1240 | } |
1241 | |
1242 | sl->sec_levels = nla_get_u8(nla: info->attrs[IEEE802154_ATTR_LLSEC_SECLEVELS]); |
1243 | sl->device_override = nla_get_u8(nla: info->attrs[IEEE802154_ATTR_LLSEC_DEV_OVERRIDE]); |
1244 | |
1245 | return 0; |
1246 | } |
1247 | |
1248 | static int llsec_add_seclevel(struct net_device *dev, struct genl_info *info) |
1249 | { |
1250 | struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev); |
1251 | struct ieee802154_llsec_seclevel sl; |
1252 | |
1253 | if (llsec_parse_seclevel(info, sl: &sl)) |
1254 | return -EINVAL; |
1255 | |
1256 | return ops->llsec->add_seclevel(dev, &sl); |
1257 | } |
1258 | |
1259 | int ieee802154_llsec_add_seclevel(struct sk_buff *skb, struct genl_info *info) |
1260 | { |
1261 | if ((info->nlhdr->nlmsg_flags & (NLM_F_CREATE | NLM_F_EXCL)) != |
1262 | (NLM_F_CREATE | NLM_F_EXCL)) |
1263 | return -EINVAL; |
1264 | |
1265 | return ieee802154_nl_llsec_change(skb, info, fn: llsec_add_seclevel); |
1266 | } |
1267 | |
1268 | static int llsec_del_seclevel(struct net_device *dev, struct genl_info *info) |
1269 | { |
1270 | struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev); |
1271 | struct ieee802154_llsec_seclevel sl; |
1272 | |
1273 | if (llsec_parse_seclevel(info, sl: &sl)) |
1274 | return -EINVAL; |
1275 | |
1276 | return ops->llsec->del_seclevel(dev, &sl); |
1277 | } |
1278 | |
1279 | int ieee802154_llsec_del_seclevel(struct sk_buff *skb, struct genl_info *info) |
1280 | { |
1281 | return ieee802154_nl_llsec_change(skb, info, fn: llsec_del_seclevel); |
1282 | } |
1283 | |
1284 | static int |
1285 | ieee802154_nl_fill_seclevel(struct sk_buff *msg, u32 portid, u32 seq, |
1286 | const struct ieee802154_llsec_seclevel *sl, |
1287 | const struct net_device *dev) |
1288 | { |
1289 | void *hdr; |
1290 | |
1291 | hdr = genlmsg_put(skb: msg, portid: 0, seq, family: &nl802154_family, NLM_F_MULTI, |
1292 | cmd: IEEE802154_LLSEC_LIST_SECLEVEL); |
1293 | if (!hdr) |
1294 | goto out; |
1295 | |
1296 | if (nla_put_string(skb: msg, attrtype: IEEE802154_ATTR_DEV_NAME, str: dev->name) || |
1297 | nla_put_u32(skb: msg, attrtype: IEEE802154_ATTR_DEV_INDEX, value: dev->ifindex) || |
1298 | nla_put_u8(skb: msg, attrtype: IEEE802154_ATTR_LLSEC_FRAME_TYPE, value: sl->frame_type) || |
1299 | nla_put_u8(skb: msg, attrtype: IEEE802154_ATTR_LLSEC_SECLEVELS, value: sl->sec_levels) || |
1300 | nla_put_u8(skb: msg, attrtype: IEEE802154_ATTR_LLSEC_DEV_OVERRIDE, |
1301 | value: sl->device_override)) |
1302 | goto nla_put_failure; |
1303 | |
1304 | if (sl->frame_type == IEEE802154_FC_TYPE_MAC_CMD && |
1305 | nla_put_u8(skb: msg, attrtype: IEEE802154_ATTR_LLSEC_CMD_FRAME_ID, |
1306 | value: sl->cmd_frame_id)) |
1307 | goto nla_put_failure; |
1308 | |
1309 | genlmsg_end(skb: msg, hdr); |
1310 | return 0; |
1311 | |
1312 | nla_put_failure: |
1313 | genlmsg_cancel(skb: msg, hdr); |
1314 | out: |
1315 | return -EMSGSIZE; |
1316 | } |
1317 | |
1318 | static int llsec_iter_seclevels(struct llsec_dump_data *data) |
1319 | { |
1320 | struct ieee802154_llsec_seclevel *pos; |
1321 | int rc = 0, idx = 0; |
1322 | |
1323 | list_for_each_entry(pos, &data->table->security_levels, list) { |
1324 | if (idx++ < data->s_idx) |
1325 | continue; |
1326 | |
1327 | if (ieee802154_nl_fill_seclevel(msg: data->skb, portid: data->portid, |
1328 | seq: data->nlmsg_seq, sl: pos, |
1329 | dev: data->dev)) { |
1330 | rc = -EMSGSIZE; |
1331 | break; |
1332 | } |
1333 | |
1334 | data->s_idx++; |
1335 | } |
1336 | |
1337 | return rc; |
1338 | } |
1339 | |
1340 | int ieee802154_llsec_dump_seclevels(struct sk_buff *skb, |
1341 | struct netlink_callback *cb) |
1342 | { |
1343 | return ieee802154_llsec_dump_table(skb, cb, step: llsec_iter_seclevels); |
1344 | } |
1345 | |