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[mirror_ubuntu-hirsute-kernel.git] / net / mac802154 / iface.c
CommitLineData
1802d0be 1// SPDX-License-Identifier: GPL-2.0-only
32bad7e3 2/*
3 * Copyright 2007-2012 Siemens AG
4 *
32bad7e3 5 * Written by:
6 * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
7 * Sergey Lapin <slapin@ossfans.org>
8 * Maxim Gorbachyov <maxim.gorbachev@siemens.com>
9 * Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
10 */
11
12#include <linux/netdevice.h>
13#include <linux/module.h>
14#include <linux/if_arp.h>
4ca24aca 15#include <linux/ieee802154.h>
32bad7e3 16
944742a3 17#include <net/nl802154.h>
32bad7e3 18#include <net/mac802154.h>
19#include <net/ieee802154_netdev.h>
5ad60d36 20#include <net/cfg802154.h>
32bad7e3 21
0f1556bc 22#include "ieee802154_i.h"
59cb300f 23#include "driver-ops.h"
32bad7e3 24
d77b4852 25int mac802154_wpan_update_llsec(struct net_device *dev)
9b0bb4a8 26{
59d19cd7 27 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
9b0bb4a8 28 struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
863e88f2 29 struct wpan_dev *wpan_dev = &sdata->wpan_dev;
9b0bb4a8
PB		 30 int rc = 0;
31
32 if (ops->llsec) {
33 struct ieee802154_llsec_params params;
34 int changed = 0;
35
863e88f2 36 params.pan_id = wpan_dev->pan_id;
9b0bb4a8
PB		 37 changed |= IEEE802154_LLSEC_PARAM_PAN_ID;
38
863e88f2 39 params.hwaddr = wpan_dev->extended_addr;
9b0bb4a8
PB		 40 changed |= IEEE802154_LLSEC_PARAM_HWADDR;
41
42 rc = ops->llsec->set_params(dev, &params, changed);
43 }
44
45 return rc;
46}
47
32bad7e3 48static int
49mac802154_wpan_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
50{
59d19cd7 51 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
863e88f2 52 struct wpan_dev *wpan_dev = &sdata->wpan_dev;
32bad7e3 53 struct sockaddr_ieee802154 *sa =
54 (struct sockaddr_ieee802154 *)&ifr->ifr_addr;
55 int err = -ENOIOCTLCMD;
56
e34fd879
LB		 57 if (cmd != SIOCGIFADDR && cmd != SIOCSIFADDR)
58 return err;
59
4a669f7d 60 rtnl_lock();
32bad7e3 61
62 switch (cmd) {
63 case SIOCGIFADDR:
b70ab2e8
PB		 64 {
65 u16 pan_id, short_addr;
66
863e88f2
AA		 67 pan_id = le16_to_cpu(wpan_dev->pan_id);
68 short_addr = le16_to_cpu(wpan_dev->short_addr);
b70ab2e8
PB		 69 if (pan_id == IEEE802154_PANID_BROADCAST ||
70 short_addr == IEEE802154_ADDR_BROADCAST) {
32bad7e3 71 err = -EADDRNOTAVAIL;
72 break;
73 }
74
75 sa->family = AF_IEEE802154;
76 sa->addr.addr_type = IEEE802154_ADDR_SHORT;
b70ab2e8
PB		 77 sa->addr.pan_id = pan_id;
78 sa->addr.short_addr = short_addr;
32bad7e3 79
80 err = 0;
81 break;
b70ab2e8 82 }
32bad7e3 83 case SIOCSIFADDR:
f7cb96f1 84 if (netif_running(dev)) {
4a669f7d 85 rtnl_unlock();
f7cb96f1
AA		 86 return -EBUSY;
87 }
88
32bad7e3 89 dev_warn(&dev->dev,
9b13494c 90 "Using DEBUGing ioctl SIOCSIFADDR isn't recommended!\n");
32bad7e3 91 if (sa->family != AF_IEEE802154 ||
92 sa->addr.addr_type != IEEE802154_ADDR_SHORT ||
93 sa->addr.pan_id == IEEE802154_PANID_BROADCAST ||
94 sa->addr.short_addr == IEEE802154_ADDR_BROADCAST ||
95 sa->addr.short_addr == IEEE802154_ADDR_UNDEF) {
96 err = -EINVAL;
97 break;
98 }
99
863e88f2
AA		 100 wpan_dev->pan_id = cpu_to_le16(sa->addr.pan_id);
101 wpan_dev->short_addr = cpu_to_le16(sa->addr.short_addr);
32bad7e3 102
9b0bb4a8 103 err = mac802154_wpan_update_llsec(dev);
32bad7e3 104 break;
105 }
106
4a669f7d 107 rtnl_unlock();
32bad7e3 108 return err;
109}
110
111static int mac802154_wpan_mac_addr(struct net_device *dev, void *p)
112{
776e59de 113 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
32bad7e3 114 struct sockaddr *addr = p;
ea7053c1 115 __le64 extended_addr;
32bad7e3 116
117 if (netif_running(dev))
118 return -EBUSY;
119
09095fdc
AA		 120 /* lowpan need to be down for update
121 * SLAAC address after ifup
122 */
123 if (sdata->wpan_dev.lowpan_dev) {
124 if (netif_running(sdata->wpan_dev.lowpan_dev))
125 return -EBUSY;
126 }
127
705cbbbe 128 ieee802154_be64_to_le64(&extended_addr, addr->sa_data);
daf4e2c8 129 if (!ieee802154_is_valid_extended_unicast_addr(extended_addr))
ea7053c1
AA		 130 return -EINVAL;
131
32bad7e3 132 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
863e88f2 133 sdata->wpan_dev.extended_addr = extended_addr;
776e59de 134
09095fdc
AA		 135 /* update lowpan interface mac address when
136 * wpan mac has been changed
137 */
138 if (sdata->wpan_dev.lowpan_dev)
139 memcpy(sdata->wpan_dev.lowpan_dev->dev_addr, dev->dev_addr,
140 dev->addr_len);
141
9b0bb4a8 142 return mac802154_wpan_update_llsec(dev);
32bad7e3 143}
144
95c0aa15
AA		 145static int ieee802154_setup_hw(struct ieee802154_sub_if_data *sdata)
146{
147 struct ieee802154_local *local = sdata->local;
148 struct wpan_dev *wpan_dev = &sdata->wpan_dev;
149 int ret;
150
151 if (local->hw.flags & IEEE802154_HW_PROMISCUOUS) {
152 ret = drv_set_promiscuous_mode(local,
153 wpan_dev->promiscuous_mode);
154 if (ret < 0)
155 return ret;
156 }
157
158 if (local->hw.flags & IEEE802154_HW_AFILT) {
159 ret = drv_set_pan_id(local, wpan_dev->pan_id);
160 if (ret < 0)
161 return ret;
162
163 ret = drv_set_extended_addr(local, wpan_dev->extended_addr);
164 if (ret < 0)
165 return ret;
166
167 ret = drv_set_short_addr(local, wpan_dev->short_addr);
168 if (ret < 0)
169 return ret;
170 }
171
172 if (local->hw.flags & IEEE802154_HW_LBT) {
173 ret = drv_set_lbt_mode(local, wpan_dev->lbt);
174 if (ret < 0)
175 return ret;
176 }
177
178 if (local->hw.flags & IEEE802154_HW_CSMA_PARAMS) {
179 ret = drv_set_csma_params(local, wpan_dev->min_be,
180 wpan_dev->max_be,
181 wpan_dev->csma_retries);
182 if (ret < 0)
183 return ret;
184 }
185
186 if (local->hw.flags & IEEE802154_HW_FRAME_RETRIES) {
187 ret = drv_set_max_frame_retries(local, wpan_dev->frame_retries);
188 if (ret < 0)
189 return ret;
190 }
191
192 return 0;
193}
194
19ec690a
AA		 195static int mac802154_slave_open(struct net_device *dev)
196{
197 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
19ec690a 198 struct ieee802154_local *local = sdata->local;
5c698e8b 199 int res;
19ec690a
AA		 200
201 ASSERT_RTNL();
202
0ea3da64 203 set_bit(SDATA_STATE_RUNNING, &sdata->state);
19ec690a 204
74457641 205 if (!local->open_count) {
95c0aa15
AA		 206 res = ieee802154_setup_hw(sdata);
207 if (res)
208 goto err;
209
59cb300f 210 res = drv_start(local);
19ec690a
AA		 211 if (res)
212 goto err;
213 }
214
74457641 215 local->open_count++;
19ec690a
AA		 216 netif_start_queue(dev);
217 return 0;
218err:
0ea3da64
AA		 219 /* might already be clear but that doesn't matter */
220 clear_bit(SDATA_STATE_RUNNING, &sdata->state);
19ec690a
AA		 221
222 return res;
223}
224
bd37a78d
AA		 225static int
226ieee802154_check_mac_settings(struct ieee802154_local *local,
227 struct wpan_dev *wpan_dev,
228 struct wpan_dev *nwpan_dev)
229{
230 ASSERT_RTNL();
231
232 if (local->hw.flags & IEEE802154_HW_PROMISCUOUS) {
233 if (wpan_dev->promiscuous_mode != nwpan_dev->promiscuous_mode)
234 return -EBUSY;
235 }
236
237 if (local->hw.flags & IEEE802154_HW_AFILT) {
8bf9538a
AA		 238 if (wpan_dev->pan_id != nwpan_dev->pan_id ||
239 wpan_dev->short_addr != nwpan_dev->short_addr ||
240 wpan_dev->extended_addr != nwpan_dev->extended_addr)
bd37a78d
AA		 241 return -EBUSY;
242 }
243
244 if (local->hw.flags & IEEE802154_HW_CSMA_PARAMS) {
8bf9538a
AA		 245 if (wpan_dev->min_be != nwpan_dev->min_be ||
246 wpan_dev->max_be != nwpan_dev->max_be ||
247 wpan_dev->csma_retries != nwpan_dev->csma_retries)
bd37a78d
AA		 248 return -EBUSY;
249 }
250
251 if (local->hw.flags & IEEE802154_HW_FRAME_RETRIES) {
252 if (wpan_dev->frame_retries != nwpan_dev->frame_retries)
253 return -EBUSY;
254 }
255
256 if (local->hw.flags & IEEE802154_HW_LBT) {
257 if (wpan_dev->lbt != nwpan_dev->lbt)
258 return -EBUSY;
259 }
260
261 return 0;
262}
263
264static int
265ieee802154_check_concurrent_iface(struct ieee802154_sub_if_data *sdata,
266 enum nl802154_iftype iftype)
267{
268 struct ieee802154_local *local = sdata->local;
269 struct wpan_dev *wpan_dev = &sdata->wpan_dev;
270 struct ieee802154_sub_if_data *nsdata;
271
272 /* we hold the RTNL here so can safely walk the list */
273 list_for_each_entry(nsdata, &local->interfaces, list) {
274 if (nsdata != sdata && ieee802154_sdata_running(nsdata)) {
275 int ret;
276
cd1c5665
AA		 277 /* TODO currently we don't support multiple node types
278 * we need to run skb_clone at rx path. Check if there
279 * exist really an use case if we need to support
280 * multiple node types at the same time.
281 */
ed65963b
AA		 282 if (wpan_dev->iftype == NL802154_IFTYPE_NODE &&
283 nsdata->wpan_dev.iftype == NL802154_IFTYPE_NODE)
cd1c5665
AA		 284 return -EBUSY;
285
bd37a78d
AA		 286 /* check all phy mac sublayer settings are the same.
287 * We have only one phy, different values makes trouble.
288 */
289 ret = ieee802154_check_mac_settings(local, wpan_dev,
290 &nsdata->wpan_dev);
291 if (ret < 0)
292 return ret;
293 }
294 }
295
296 return 0;
297}
298
6ef0023a 299static int mac802154_wpan_open(struct net_device *dev)
e462ded6
PB		 300{
301 int rc;
59d19cd7 302 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
863e88f2 303 struct wpan_dev *wpan_dev = &sdata->wpan_dev;
e462ded6 304
ed65963b 305 rc = ieee802154_check_concurrent_iface(sdata, wpan_dev->iftype);
bd37a78d
AA		 306 if (rc < 0)
307 return rc;
308
95c0aa15 309 return mac802154_slave_open(dev);
e462ded6
PB		 310}
311
19ec690a
AA		 312static int mac802154_slave_close(struct net_device *dev)
313{
314 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
315 struct ieee802154_local *local = sdata->local;
316
317 ASSERT_RTNL();
318
319 netif_stop_queue(dev);
74457641 320 local->open_count--;
19ec690a 321
0ea3da64 322 clear_bit(SDATA_STATE_RUNNING, &sdata->state);
19ec690a 323
c4227c8a
AA		 324 if (!local->open_count)
325 ieee802154_stop_device(local);
19ec690a
AA		 326
327 return 0;
328}
329
036562f9 330static int mac802154_set_header_security(struct ieee802154_sub_if_data *sdata,
f30be4d5
PB		 331 struct ieee802154_hdr *hdr,
332 const struct ieee802154_mac_cb *cb)
333{
334 struct ieee802154_llsec_params params;
335 u8 level;
336
036562f9 337 mac802154_llsec_get_params(&sdata->sec, &params);
f30be4d5
PB		 338
339 if (!params.enabled && cb->secen_override && cb->secen)
340 return -EINVAL;
341 if (!params.enabled ||
342 (cb->secen_override && !cb->secen) ||
343 !params.out_level)
344 return 0;
345 if (cb->seclevel_override && !cb->seclevel)
346 return -EINVAL;
347
348 level = cb->seclevel_override ? cb->seclevel : params.out_level;
349
350 hdr->fc.security_enabled = 1;
351 hdr->sec.level = level;
352 hdr->sec.key_id_mode = params.out_key.mode;
353 if (params.out_key.mode == IEEE802154_SCF_KEY_SHORT_INDEX)
354 hdr->sec.short_src = params.out_key.short_source;
355 else if (params.out_key.mode == IEEE802154_SCF_KEY_HW_INDEX)
356 hdr->sec.extended_src = params.out_key.extended_source;
357 hdr->sec.key_id = params.out_key.id;
358
359 return 0;
360}
361
838b83d6
AA		 362static int ieee802154_header_create(struct sk_buff *skb,
363 struct net_device *dev,
364 const struct ieee802154_addr *daddr,
365 const struct ieee802154_addr *saddr,
366 unsigned len)
32bad7e3 367{
e6278d92 368 struct ieee802154_hdr hdr;
59d19cd7 369 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
863e88f2 370 struct wpan_dev *wpan_dev = &sdata->wpan_dev;
32edc40a 371 struct ieee802154_mac_cb *cb = mac_cb(skb);
e6278d92 372 int hlen;
32bad7e3 373
374 if (!daddr)
375 return -EINVAL;
376
e6278d92 377 memset(&hdr.fc, 0, sizeof(hdr.fc));
32edc40a
PB		 378 hdr.fc.type = cb->type;
379 hdr.fc.security_enabled = cb->secen;
380 hdr.fc.ack_request = cb->ackreq;
344f8c11 381 hdr.seq = atomic_inc_return(&dev->ieee802154_ptr->dsn) & 0xFF;
32bad7e3 382
036562f9 383 if (mac802154_set_header_security(sdata, &hdr, cb) < 0)
f30be4d5
PB		 384 return -EINVAL;
385
32bad7e3 386 if (!saddr) {
863e88f2
AA		 387 if (wpan_dev->short_addr == cpu_to_le16(IEEE802154_ADDR_BROADCAST) ||
388 wpan_dev->short_addr == cpu_to_le16(IEEE802154_ADDR_UNDEF) ||
389 wpan_dev->pan_id == cpu_to_le16(IEEE802154_PANID_BROADCAST)) {
e6278d92 390 hdr.source.mode = IEEE802154_ADDR_LONG;
863e88f2 391 hdr.source.extended_addr = wpan_dev->extended_addr;
32bad7e3 392 } else {
e6278d92 393 hdr.source.mode = IEEE802154_ADDR_SHORT;
863e88f2 394 hdr.source.short_addr = wpan_dev->short_addr;
32bad7e3 395 }
396
863e88f2 397 hdr.source.pan_id = wpan_dev->pan_id;
e6278d92
PB		 398 } else {
399 hdr.source = *(const struct ieee802154_addr *)saddr;
32bad7e3 400 }
401
e6278d92 402 hdr.dest = *(const struct ieee802154_addr *)daddr;
32bad7e3 403
e6278d92
PB		 404 hlen = ieee802154_hdr_push(skb, &hdr);
405 if (hlen < 0)
406 return -EINVAL;
32bad7e3 407
3e69162e 408 skb_reset_mac_header(skb);
e6278d92 409 skb->mac_len = hlen;
32bad7e3 410
8c84296f 411 if (len > ieee802154_max_payload(&hdr))
d1d7358e
PB		 412 return -EMSGSIZE;
413
e6278d92 414 return hlen;
32bad7e3 415}
416
838b83d6
AA		 417static const struct wpan_dev_header_ops ieee802154_header_ops = {
418 .create = ieee802154_header_create,
419};
420
421/* This header create functionality assumes a 8 byte array for
422 * source and destination pointer at maximum. To adapt this for
423 * the 802.15.4 dataframe header we use extended address handling
424 * here only and intra pan connection. fc fields are mostly fallback
425 * handling. For provide dev_hard_header for dgram sockets.
426 */
427static int mac802154_header_create(struct sk_buff *skb,
428 struct net_device *dev,
429 unsigned short type,
430 const void *daddr,
431 const void *saddr,
432 unsigned len)
433{
434 struct ieee802154_hdr hdr;
435 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
436 struct wpan_dev *wpan_dev = &sdata->wpan_dev;
437 struct ieee802154_mac_cb cb = { };
438 int hlen;
439
440 if (!daddr)
441 return -EINVAL;
442
443 memset(&hdr.fc, 0, sizeof(hdr.fc));
444 hdr.fc.type = IEEE802154_FC_TYPE_DATA;
445 hdr.fc.ack_request = wpan_dev->ackreq;
446 hdr.seq = atomic_inc_return(&dev->ieee802154_ptr->dsn) & 0xFF;
447
448 /* TODO currently a workaround to give zero cb block to set
449 * security parameters defaults according MIB.
450 */
451 if (mac802154_set_header_security(sdata, &hdr, &cb) < 0)
452 return -EINVAL;
453
454 hdr.dest.pan_id = wpan_dev->pan_id;
455 hdr.dest.mode = IEEE802154_ADDR_LONG;
c2d5ecfa 456 ieee802154_be64_to_le64(&hdr.dest.extended_addr, daddr);
838b83d6
AA		 457
458 hdr.source.pan_id = hdr.dest.pan_id;
459 hdr.source.mode = IEEE802154_ADDR_LONG;
460
461 if (!saddr)
462 hdr.source.extended_addr = wpan_dev->extended_addr;
463 else
c2d5ecfa 464 ieee802154_be64_to_le64(&hdr.source.extended_addr, saddr);
838b83d6
AA		 465
466 hlen = ieee802154_hdr_push(skb, &hdr);
467 if (hlen < 0)
468 return -EINVAL;
469
470 skb_reset_mac_header(skb);
471 skb->mac_len = hlen;
472
473 if (len > ieee802154_max_payload(&hdr))
474 return -EMSGSIZE;
475
476 return hlen;
477}
478
32bad7e3 479static int
480mac802154_header_parse(const struct sk_buff *skb, unsigned char *haddr)
481{
e6278d92 482 struct ieee802154_hdr hdr;
32bad7e3 483
e6278d92
PB		 484 if (ieee802154_hdr_peek_addrs(skb, &hdr) < 0) {
485 pr_debug("malformed packet\n");
486 return 0;
32bad7e3 487 }
488
838b83d6 489 if (hdr.source.mode == IEEE802154_ADDR_LONG) {
c2d5ecfa 490 ieee802154_le64_to_be64(haddr, &hdr.source.extended_addr);
838b83d6
AA		 491 return IEEE802154_EXTENDED_ADDR_LEN;
492 }
493
494 return 0;
32bad7e3 495}
496
838b83d6
AA		 497static const struct header_ops mac802154_header_ops = {
498 .create = mac802154_header_create,
499 .parse = mac802154_header_parse,
32bad7e3 500};
501
502static const struct net_device_ops mac802154_wpan_ops = {
e462ded6 503 .ndo_open = mac802154_wpan_open,
32bad7e3 504 .ndo_stop = mac802154_slave_close,
e5e584fc 505 .ndo_start_xmit = ieee802154_subif_start_xmit,
32bad7e3 506 .ndo_do_ioctl = mac802154_wpan_ioctl,
507 .ndo_set_mac_address = mac802154_wpan_mac_addr,
508};
509
b9ff77e5 510static const struct net_device_ops mac802154_monitor_ops = {
38130c31 511 .ndo_open = mac802154_wpan_open,
b9ff77e5
AA		 512 .ndo_stop = mac802154_slave_close,
513 .ndo_start_xmit = ieee802154_monitor_start_xmit,
514};
515
f30be4d5
PB		 516static void mac802154_wpan_free(struct net_device *dev)
517{
59d19cd7 518 struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
f30be4d5 519
036562f9 520 mac802154_llsec_destroy(&sdata->sec);
f30be4d5
PB		 521}
522
d5ae67ba 523static void ieee802154_if_setup(struct net_device *dev)
32bad7e3 524{
e57a8946
AA		 525 dev->addr_len = IEEE802154_EXTENDED_ADDR_LEN;
526 memset(dev->broadcast, 0xff, IEEE802154_EXTENDED_ADDR_LEN);
32bad7e3 527
87a93e4e
AA		 528 /* Let hard_header_len set to IEEE802154_MIN_HEADER_LEN. AF_PACKET
529 * will not send frames without any payload, but ack frames
530 * has no payload, so substract one that we can send a 3 bytes
531 * frame. The xmit callback assumes at least a hard header where two
532 * bytes fc and sequence field are set.
533 */
534 dev->hard_header_len = IEEE802154_MIN_HEADER_LEN - 1;
535 /* The auth_tag header is for security and places in private payload
536 * room of mac frame which stucks between payload and FCS field.
537 */
538 dev->needed_tailroom = IEEE802154_MAX_AUTH_TAG_LEN +
539 IEEE802154_FCS_LEN;
b40988c4
AA		 540 /* The mtu size is the payload without mac header in this case.
541 * We have a dynamic length header with a minimum header length
542 * which is hard_header_len. In this case we let mtu to the size
543 * of maximum payload which is IEEE802154_MTU - IEEE802154_FCS_LEN -
544 * hard_header_len. The FCS which is set by hardware or ndo_start_xmit
545 * and the minimum mac header which can be evaluated inside driver
546 * layer. The rest of mac header will be part of payload if greater
547 * than hard_header_len.
548 */
549 dev->mtu = IEEE802154_MTU - IEEE802154_FCS_LEN -
550 dev->hard_header_len;
e937f583 551 dev->tx_queue_len = 300;
32bad7e3 552 dev->flags = IFF_NOARP | IFF_BROADCAST;
d5ae67ba 553}
32bad7e3 554
d5ae67ba 555static int
944742a3
AA		 556ieee802154_setup_sdata(struct ieee802154_sub_if_data *sdata,
557 enum nl802154_iftype type)
d5ae67ba 558{
863e88f2 559 struct wpan_dev *wpan_dev = &sdata->wpan_dev;
d77b4852 560 int ret;
344f8c11 561 u8 tmp;
863e88f2 562
d5ae67ba 563 /* set some type-dependent values */
190ac1ca 564 sdata->wpan_dev.iftype = type;
32bad7e3 565
344f8c11
AA		 566 get_random_bytes(&tmp, sizeof(tmp));
567 atomic_set(&wpan_dev->bsn, tmp);
568 get_random_bytes(&tmp, sizeof(tmp));
569 atomic_set(&wpan_dev->dsn, tmp);
32bad7e3 570
e462ded6 571 /* defaults per 802.15.4-2011 */
5fb3f026
AA		 572 wpan_dev->min_be = 3;
573 wpan_dev->max_be = 5;
574 wpan_dev->csma_retries = 4;
89c7d788 575 wpan_dev->frame_retries = 3;
e462ded6 576
863e88f2
AA		 577 wpan_dev->pan_id = cpu_to_le16(IEEE802154_PANID_BROADCAST);
578 wpan_dev->short_addr = cpu_to_le16(IEEE802154_ADDR_BROADCAST);
f30be4d5 579
d5ae67ba 580 switch (type) {
944742a3 581 case NL802154_IFTYPE_NODE:
b03c9ccc
AA		 582 ieee802154_be64_to_le64(&wpan_dev->extended_addr,
583 sdata->dev->dev_addr);
584
d5ae67ba 585 sdata->dev->header_ops = &mac802154_header_ops;
cf124db5
DM		 586 sdata->dev->needs_free_netdev = true;
587 sdata->dev->priv_destructor = mac802154_wpan_free;
d5ae67ba
AA		 588 sdata->dev->netdev_ops = &mac802154_wpan_ops;
589 sdata->dev->ml_priv = &mac802154_mlme_wpan;
863e88f2 590 wpan_dev->promiscuous_mode = false;
838b83d6 591 wpan_dev->header_ops = &ieee802154_header_ops;
986a8abf 592
d5ae67ba 593 mutex_init(&sdata->sec_mtx);
986a8abf 594
d5ae67ba 595 mac802154_llsec_init(&sdata->sec);
d77b4852
AA		 596 ret = mac802154_wpan_update_llsec(sdata->dev);
597 if (ret < 0)
598 return ret;
599
d5ae67ba 600 break;
944742a3 601 case NL802154_IFTYPE_MONITOR:
cf124db5 602 sdata->dev->needs_free_netdev = true;
d5ae67ba 603 sdata->dev->netdev_ops = &mac802154_monitor_ops;
863e88f2 604 wpan_dev->promiscuous_mode = true;
d5ae67ba
AA		 605 break;
606 default:
607 BUG();
608 }
986a8abf
AA		 609
610 return 0;
611}
612
613struct net_device *
614ieee802154_if_add(struct ieee802154_local *local, const char *name,
5b4a1039
VB		 615 unsigned char name_assign_type, enum nl802154_iftype type,
616 __le64 extended_addr)
986a8abf 617{
d5ae67ba
AA		 618 struct net_device *ndev = NULL;
619 struct ieee802154_sub_if_data *sdata = NULL;
620 int ret = -ENOMEM;
621
622 ASSERT_RTNL();
623
ed65963b 624 ndev = alloc_netdev(sizeof(*sdata), name,
5b4a1039 625 name_assign_type, ieee802154_if_setup);
d5ae67ba
AA		 626 if (!ndev)
627 return ERR_PTR(-ENOMEM);
628
87a93e4e
AA		 629 ndev->needed_headroom = local->hw.extra_tx_headroom +
630 IEEE802154_MAX_HEADER_LEN;
d5ae67ba
AA		 631
632 ret = dev_alloc_name(ndev, ndev->name);
633 if (ret < 0)
634 goto err;
986a8abf 635
0e57547e
AA		 636 ieee802154_le64_to_be64(ndev->perm_addr,
637 &local->hw.phy->perm_extended_addr);
986a8abf 638 switch (type) {
944742a3 639 case NL802154_IFTYPE_NODE:
d5ae67ba 640 ndev->type = ARPHRD_IEEE802154;
daf4e2c8 641 if (ieee802154_is_valid_extended_unicast_addr(extended_addr))
0e57547e
AA		 642 ieee802154_le64_to_be64(ndev->dev_addr, &extended_addr);
643 else
644 memcpy(ndev->dev_addr, ndev->perm_addr,
645 IEEE802154_EXTENDED_ADDR_LEN);
986a8abf 646 break;
944742a3 647 case NL802154_IFTYPE_MONITOR:
d5ae67ba 648 ndev->type = ARPHRD_IEEE802154_MONITOR;
986a8abf 649 break;
d5ae67ba
AA		 650 default:
651 ret = -EINVAL;
652 goto err;
986a8abf 653 }
d5ae67ba
AA		 654
655 /* TODO check this */
656 SET_NETDEV_DEV(ndev, &local->phy->dev);
abbcc341 657 dev_net_set(ndev, wpan_phy_net(local->hw.phy));
d5ae67ba
AA		 658 sdata = netdev_priv(ndev);
659 ndev->ieee802154_ptr = &sdata->wpan_dev;
660 memcpy(sdata->name, ndev->name, IFNAMSIZ);
661 sdata->dev = ndev;
662 sdata->wpan_dev.wpan_phy = local->hw.phy;
663 sdata->local = local;
664
665 /* setup type-dependent data */
666 ret = ieee802154_setup_sdata(sdata, type);
667 if (ret)
986a8abf
AA		 668 goto err;
669
473f3766
VB		 670 ret = register_netdevice(ndev);
671 if (ret < 0)
672 goto err;
d5ae67ba
AA		 673
674 mutex_lock(&local->iflist_mtx);
675 list_add_tail_rcu(&sdata->list, &local->interfaces);
676 mutex_unlock(&local->iflist_mtx);
986a8abf 677
d5ae67ba 678 return ndev;
986a8abf 679
986a8abf 680err:
d5ae67ba
AA		 681 free_netdev(ndev);
682 return ERR_PTR(ret);
986a8abf
AA		 683}
684
b210b187
AA		 685void ieee802154_if_remove(struct ieee802154_sub_if_data *sdata)
686{
687 ASSERT_RTNL();
688
689 mutex_lock(&sdata->local->iflist_mtx);
690 list_del_rcu(&sdata->list);
691 mutex_unlock(&sdata->local->iflist_mtx);
692
693 synchronize_rcu();
694 unregister_netdevice(sdata->dev);
695}
592dfbfc
AA		 696
697void ieee802154_remove_interfaces(struct ieee802154_local *local)
698{
d14e1c71 699 struct ieee802154_sub_if_data *sdata, *tmp;
592dfbfc 700
2789e629 701 mutex_lock(&local->iflist_mtx);
d14e1c71 702 list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) {
592dfbfc 703 list_del(&sdata->list);
592dfbfc
AA		 704
705 unregister_netdevice(sdata->dev);
706 }
2789e629 707 mutex_unlock(&local->iflist_mtx);
592dfbfc 708}
be4fd8e5
AA		 709
710static int netdev_notify(struct notifier_block *nb,
711 unsigned long state, void *ptr)
712{
713 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
714 struct ieee802154_sub_if_data *sdata;
715
716 if (state != NETDEV_CHANGENAME)
717 return NOTIFY_DONE;
718
719 if (!dev->ieee802154_ptr || !dev->ieee802154_ptr->wpan_phy)
720 return NOTIFY_DONE;
721
722 if (dev->ieee802154_ptr->wpan_phy->privid != mac802154_wpan_phy_privid)
723 return NOTIFY_DONE;
724
725 sdata = IEEE802154_DEV_TO_SUB_IF(dev);
726 memcpy(sdata->name, dev->name, IFNAMSIZ);
727
728 return NOTIFY_OK;
729}
730
731static struct notifier_block mac802154_netdev_notifier = {
732 .notifier_call = netdev_notify,
733};
734
735int ieee802154_iface_init(void)
736{
737 return register_netdevice_notifier(&mac802154_netdev_notifier);
738}
739
740void ieee802154_iface_exit(void)
741{
742 unregister_netdevice_notifier(&mac802154_netdev_notifier);
743}
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