2 * Copyright 2007-2012 Siemens AG
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2
6 * as published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
14 * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
15 * Sergey Lapin <slapin@ossfans.org>
16 * Maxim Gorbachyov <maxim.gorbachev@siemens.com>
17 * Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
20 #include <linux/netdevice.h>
21 #include <linux/module.h>
22 #include <linux/if_arp.h>
23 #include <linux/ieee802154.h>
25 #include <net/rtnetlink.h>
26 #include <linux/nl802154.h>
27 #include <net/af_ieee802154.h>
28 #include <net/mac802154.h>
29 #include <net/ieee802154_netdev.h>
30 #include <net/cfg802154.h>
32 #include "ieee802154_i.h"
33 #include "driver-ops.h"
35 static int mac802154_wpan_update_llsec(struct net_device
*dev
)
37 struct ieee802154_sub_if_data
*sdata
= IEEE802154_DEV_TO_SUB_IF(dev
);
38 struct ieee802154_mlme_ops
*ops
= ieee802154_mlme_ops(dev
);
42 struct ieee802154_llsec_params params
;
45 params
.pan_id
= sdata
->pan_id
;
46 changed
|= IEEE802154_LLSEC_PARAM_PAN_ID
;
48 params
.hwaddr
= sdata
->extended_addr
;
49 changed
|= IEEE802154_LLSEC_PARAM_HWADDR
;
51 rc
= ops
->llsec
->set_params(dev
, ¶ms
, changed
);
58 mac802154_wpan_ioctl(struct net_device
*dev
, struct ifreq
*ifr
, int cmd
)
60 struct ieee802154_sub_if_data
*sdata
= IEEE802154_DEV_TO_SUB_IF(dev
);
61 struct sockaddr_ieee802154
*sa
=
62 (struct sockaddr_ieee802154
*)&ifr
->ifr_addr
;
63 int err
= -ENOIOCTLCMD
;
65 spin_lock_bh(&sdata
->mib_lock
);
70 u16 pan_id
, short_addr
;
72 pan_id
= le16_to_cpu(sdata
->pan_id
);
73 short_addr
= le16_to_cpu(sdata
->short_addr
);
74 if (pan_id
== IEEE802154_PANID_BROADCAST
||
75 short_addr
== IEEE802154_ADDR_BROADCAST
) {
80 sa
->family
= AF_IEEE802154
;
81 sa
->addr
.addr_type
= IEEE802154_ADDR_SHORT
;
82 sa
->addr
.pan_id
= pan_id
;
83 sa
->addr
.short_addr
= short_addr
;
90 "Using DEBUGing ioctl SIOCSIFADDR isn't recommended!\n");
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
) {
100 sdata
->pan_id
= cpu_to_le16(sa
->addr
.pan_id
);
101 sdata
->short_addr
= cpu_to_le16(sa
->addr
.short_addr
);
103 err
= mac802154_wpan_update_llsec(dev
);
107 spin_unlock_bh(&sdata
->mib_lock
);
111 static int mac802154_wpan_mac_addr(struct net_device
*dev
, void *p
)
113 struct ieee802154_sub_if_data
*sdata
= IEEE802154_DEV_TO_SUB_IF(dev
);
114 struct sockaddr
*addr
= p
;
115 __le64 extended_addr
;
117 if (netif_running(dev
))
120 extended_addr
= ieee802154_netdev_to_extended_addr(addr
->sa_data
);
121 if (!ieee802154_is_valid_extended_addr(extended_addr
))
124 memcpy(dev
->dev_addr
, addr
->sa_data
, dev
->addr_len
);
125 sdata
->extended_addr
= extended_addr
;
127 return mac802154_wpan_update_llsec(dev
);
130 static int mac802154_slave_open(struct net_device
*dev
)
132 struct ieee802154_sub_if_data
*sdata
= IEEE802154_DEV_TO_SUB_IF(dev
);
133 struct ieee802154_sub_if_data
*subif
;
134 struct ieee802154_local
*local
= sdata
->local
;
139 if (sdata
->type
== IEEE802154_DEV_WPAN
) {
140 mutex_lock(&sdata
->local
->iflist_mtx
);
141 list_for_each_entry(subif
, &sdata
->local
->interfaces
, list
) {
142 if (subif
!= sdata
&& subif
->type
== sdata
->type
&&
143 ieee802154_sdata_running(subif
)) {
144 mutex_unlock(&sdata
->local
->iflist_mtx
);
148 mutex_unlock(&sdata
->local
->iflist_mtx
);
151 set_bit(SDATA_STATE_RUNNING
, &sdata
->state
);
153 if (!local
->open_count
) {
154 res
= drv_start(local
);
161 netif_start_queue(dev
);
164 /* might already be clear but that doesn't matter */
165 clear_bit(SDATA_STATE_RUNNING
, &sdata
->state
);
170 static int mac802154_wpan_open(struct net_device
*dev
)
173 struct ieee802154_sub_if_data
*sdata
= IEEE802154_DEV_TO_SUB_IF(dev
);
174 struct ieee802154_local
*local
= sdata
->local
;
175 struct wpan_phy
*phy
= sdata
->local
->phy
;
177 rc
= mac802154_slave_open(dev
);
181 mutex_lock(&phy
->pib_lock
);
183 if (local
->hw
.flags
& IEEE802154_HW_PROMISCUOUS
) {
184 rc
= drv_set_promiscuous_mode(local
, sdata
->promisuous_mode
);
189 if (local
->hw
.flags
& IEEE802154_HW_AFILT
) {
190 rc
= drv_set_pan_id(local
, sdata
->pan_id
);
194 rc
= drv_set_extended_addr(local
, sdata
->extended_addr
);
198 rc
= drv_set_short_addr(local
, sdata
->short_addr
);
203 if (local
->hw
.flags
& IEEE802154_HW_LBT
) {
204 rc
= drv_set_lbt_mode(local
, sdata
->mac_params
.lbt
);
209 if (local
->hw
.flags
& IEEE802154_HW_CSMA_PARAMS
) {
210 rc
= drv_set_csma_params(local
, sdata
->mac_params
.min_be
,
211 sdata
->mac_params
.max_be
,
212 sdata
->mac_params
.csma_retries
);
217 if (local
->hw
.flags
& IEEE802154_HW_FRAME_RETRIES
) {
218 rc
= drv_set_max_frame_retries(local
,
219 sdata
->mac_params
.frame_retries
);
224 mutex_unlock(&phy
->pib_lock
);
228 mutex_unlock(&phy
->pib_lock
);
232 static int mac802154_slave_close(struct net_device
*dev
)
234 struct ieee802154_sub_if_data
*sdata
= IEEE802154_DEV_TO_SUB_IF(dev
);
235 struct ieee802154_local
*local
= sdata
->local
;
239 netif_stop_queue(dev
);
242 clear_bit(SDATA_STATE_RUNNING
, &sdata
->state
);
244 if (!local
->open_count
)
250 static int mac802154_set_header_security(struct ieee802154_sub_if_data
*sdata
,
251 struct ieee802154_hdr
*hdr
,
252 const struct ieee802154_mac_cb
*cb
)
254 struct ieee802154_llsec_params params
;
257 mac802154_llsec_get_params(&sdata
->sec
, ¶ms
);
259 if (!params
.enabled
&& cb
->secen_override
&& cb
->secen
)
261 if (!params
.enabled
||
262 (cb
->secen_override
&& !cb
->secen
) ||
265 if (cb
->seclevel_override
&& !cb
->seclevel
)
268 level
= cb
->seclevel_override
? cb
->seclevel
: params
.out_level
;
270 hdr
->fc
.security_enabled
= 1;
271 hdr
->sec
.level
= level
;
272 hdr
->sec
.key_id_mode
= params
.out_key
.mode
;
273 if (params
.out_key
.mode
== IEEE802154_SCF_KEY_SHORT_INDEX
)
274 hdr
->sec
.short_src
= params
.out_key
.short_source
;
275 else if (params
.out_key
.mode
== IEEE802154_SCF_KEY_HW_INDEX
)
276 hdr
->sec
.extended_src
= params
.out_key
.extended_source
;
277 hdr
->sec
.key_id
= params
.out_key
.id
;
282 static int mac802154_header_create(struct sk_buff
*skb
,
283 struct net_device
*dev
,
289 struct ieee802154_hdr hdr
;
290 struct ieee802154_sub_if_data
*sdata
= IEEE802154_DEV_TO_SUB_IF(dev
);
291 struct ieee802154_mac_cb
*cb
= mac_cb(skb
);
297 memset(&hdr
.fc
, 0, sizeof(hdr
.fc
));
298 hdr
.fc
.type
= cb
->type
;
299 hdr
.fc
.security_enabled
= cb
->secen
;
300 hdr
.fc
.ack_request
= cb
->ackreq
;
301 hdr
.seq
= ieee802154_mlme_ops(dev
)->get_dsn(dev
);
303 if (mac802154_set_header_security(sdata
, &hdr
, cb
) < 0)
307 spin_lock_bh(&sdata
->mib_lock
);
309 if (sdata
->short_addr
== cpu_to_le16(IEEE802154_ADDR_BROADCAST
) ||
310 sdata
->short_addr
== cpu_to_le16(IEEE802154_ADDR_UNDEF
) ||
311 sdata
->pan_id
== cpu_to_le16(IEEE802154_PANID_BROADCAST
)) {
312 hdr
.source
.mode
= IEEE802154_ADDR_LONG
;
313 hdr
.source
.extended_addr
= sdata
->extended_addr
;
315 hdr
.source
.mode
= IEEE802154_ADDR_SHORT
;
316 hdr
.source
.short_addr
= sdata
->short_addr
;
319 hdr
.source
.pan_id
= sdata
->pan_id
;
321 spin_unlock_bh(&sdata
->mib_lock
);
323 hdr
.source
= *(const struct ieee802154_addr
*)saddr
;
326 hdr
.dest
= *(const struct ieee802154_addr
*)daddr
;
328 hlen
= ieee802154_hdr_push(skb
, &hdr
);
332 skb_reset_mac_header(skb
);
335 if (len
> ieee802154_max_payload(&hdr
))
342 mac802154_header_parse(const struct sk_buff
*skb
, unsigned char *haddr
)
344 struct ieee802154_hdr hdr
;
345 struct ieee802154_addr
*addr
= (struct ieee802154_addr
*)haddr
;
347 if (ieee802154_hdr_peek_addrs(skb
, &hdr
) < 0) {
348 pr_debug("malformed packet\n");
353 return sizeof(*addr
);
356 static struct header_ops mac802154_header_ops
= {
357 .create
= mac802154_header_create
,
358 .parse
= mac802154_header_parse
,
361 static const struct net_device_ops mac802154_wpan_ops
= {
362 .ndo_open
= mac802154_wpan_open
,
363 .ndo_stop
= mac802154_slave_close
,
364 .ndo_start_xmit
= ieee802154_subif_start_xmit
,
365 .ndo_do_ioctl
= mac802154_wpan_ioctl
,
366 .ndo_set_mac_address
= mac802154_wpan_mac_addr
,
369 static const struct net_device_ops mac802154_monitor_ops
= {
370 .ndo_open
= mac802154_wpan_open
,
371 .ndo_stop
= mac802154_slave_close
,
372 .ndo_start_xmit
= ieee802154_monitor_start_xmit
,
375 static void mac802154_wpan_free(struct net_device
*dev
)
377 struct ieee802154_sub_if_data
*sdata
= IEEE802154_DEV_TO_SUB_IF(dev
);
379 mac802154_llsec_destroy(&sdata
->sec
);
384 void mac802154_wpan_setup(struct net_device
*dev
)
386 struct ieee802154_sub_if_data
*sdata
;
388 dev
->addr_len
= IEEE802154_ADDR_LEN
;
389 memset(dev
->broadcast
, 0xff, IEEE802154_ADDR_LEN
);
391 dev
->hard_header_len
= MAC802154_FRAME_HARD_HEADER_LEN
;
392 dev
->header_ops
= &mac802154_header_ops
;
393 dev
->needed_tailroom
= 2 + 16; /* FCS + MIC */
394 dev
->mtu
= IEEE802154_MTU
;
395 dev
->tx_queue_len
= 300;
396 dev
->type
= ARPHRD_IEEE802154
;
397 dev
->flags
= IFF_NOARP
| IFF_BROADCAST
;
399 dev
->destructor
= mac802154_wpan_free
;
400 dev
->netdev_ops
= &mac802154_wpan_ops
;
401 dev
->ml_priv
= &mac802154_mlme_wpan
;
403 sdata
= IEEE802154_DEV_TO_SUB_IF(dev
);
404 sdata
->type
= IEEE802154_DEV_WPAN
;
406 spin_lock_init(&sdata
->mib_lock
);
407 mutex_init(&sdata
->sec_mtx
);
409 get_random_bytes(&sdata
->bsn
, 1);
410 get_random_bytes(&sdata
->dsn
, 1);
412 /* defaults per 802.15.4-2011 */
413 sdata
->mac_params
.min_be
= 3;
414 sdata
->mac_params
.max_be
= 5;
415 sdata
->mac_params
.csma_retries
= 4;
416 /* for compatibility, actual default is 3 */
417 sdata
->mac_params
.frame_retries
= -1;
419 sdata
->pan_id
= cpu_to_le16(IEEE802154_PANID_BROADCAST
);
420 sdata
->short_addr
= cpu_to_le16(IEEE802154_ADDR_BROADCAST
);
422 sdata
->promisuous_mode
= false;
424 mac802154_llsec_init(&sdata
->sec
);
427 void mac802154_monitor_setup(struct net_device
*dev
)
429 struct ieee802154_sub_if_data
*sdata
;
431 dev
->needed_tailroom
= 2; /* room for FCS */
432 dev
->mtu
= IEEE802154_MTU
;
433 dev
->tx_queue_len
= 10;
434 dev
->type
= ARPHRD_IEEE802154_MONITOR
;
435 dev
->flags
= IFF_NOARP
| IFF_BROADCAST
;
437 dev
->destructor
= free_netdev
;
438 dev
->netdev_ops
= &mac802154_monitor_ops
;
439 dev
->ml_priv
= &mac802154_mlme_reduced
;
441 sdata
= IEEE802154_DEV_TO_SUB_IF(dev
);
442 sdata
->type
= IEEE802154_DEV_MONITOR
;
444 sdata
->promisuous_mode
= true;
448 mac802154_netdev_register(struct ieee802154_local
*local
,
449 struct net_device
*dev
)
451 struct ieee802154_sub_if_data
*sdata
= IEEE802154_DEV_TO_SUB_IF(dev
);
455 sdata
->local
= local
;
457 dev
->needed_headroom
= local
->hw
.extra_tx_headroom
;
459 SET_NETDEV_DEV(dev
, &local
->phy
->dev
);
461 err
= register_netdev(dev
);
466 mutex_lock(&local
->iflist_mtx
);
467 list_add_tail_rcu(&sdata
->list
, &local
->interfaces
);
468 mutex_unlock(&local
->iflist_mtx
);
475 ieee802154_if_add(struct ieee802154_local
*local
, const char *name
,
476 struct wpan_dev
**new_wpan_dev
, int type
)
478 struct net_device
*dev
;
482 case IEEE802154_DEV_MONITOR
:
483 dev
= alloc_netdev(sizeof(struct ieee802154_sub_if_data
),
484 name
, NET_NAME_UNKNOWN
,
485 mac802154_monitor_setup
);
487 case IEEE802154_DEV_WPAN
:
488 dev
= alloc_netdev(sizeof(struct ieee802154_sub_if_data
),
489 name
, NET_NAME_UNKNOWN
,
490 mac802154_wpan_setup
);
500 err
= mac802154_netdev_register(local
, dev
);
512 void ieee802154_if_remove(struct ieee802154_sub_if_data
*sdata
)
516 mutex_lock(&sdata
->local
->iflist_mtx
);
517 list_del_rcu(&sdata
->list
);
518 mutex_unlock(&sdata
->local
->iflist_mtx
);
521 unregister_netdevice(sdata
->dev
);