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/mac802154.h>
28 #include <net/ieee802154_netdev.h>
29 #include <net/cfg802154.h>
31 #include "ieee802154_i.h"
32 #include "driver-ops.h"
34 static int mac802154_wpan_update_llsec(struct net_device
*dev
)
36 struct ieee802154_sub_if_data
*sdata
= IEEE802154_DEV_TO_SUB_IF(dev
);
37 struct ieee802154_mlme_ops
*ops
= ieee802154_mlme_ops(dev
);
38 struct wpan_dev
*wpan_dev
= &sdata
->wpan_dev
;
42 struct ieee802154_llsec_params params
;
45 params
.pan_id
= wpan_dev
->pan_id
;
46 changed
|= IEEE802154_LLSEC_PARAM_PAN_ID
;
48 params
.hwaddr
= wpan_dev
->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 wpan_dev
*wpan_dev
= &sdata
->wpan_dev
;
62 struct sockaddr_ieee802154
*sa
=
63 (struct sockaddr_ieee802154
*)&ifr
->ifr_addr
;
64 int err
= -ENOIOCTLCMD
;
68 spin_lock_bh(&sdata
->mib_lock
);
73 u16 pan_id
, short_addr
;
75 pan_id
= le16_to_cpu(wpan_dev
->pan_id
);
76 short_addr
= le16_to_cpu(wpan_dev
->short_addr
);
77 if (pan_id
== IEEE802154_PANID_BROADCAST
||
78 short_addr
== IEEE802154_ADDR_BROADCAST
) {
83 sa
->family
= AF_IEEE802154
;
84 sa
->addr
.addr_type
= IEEE802154_ADDR_SHORT
;
85 sa
->addr
.pan_id
= pan_id
;
86 sa
->addr
.short_addr
= short_addr
;
92 if (netif_running(dev
)) {
93 spin_unlock_bh(&sdata
->mib_lock
);
98 "Using DEBUGing ioctl SIOCSIFADDR isn't recommended!\n");
99 if (sa
->family
!= AF_IEEE802154
||
100 sa
->addr
.addr_type
!= IEEE802154_ADDR_SHORT
||
101 sa
->addr
.pan_id
== IEEE802154_PANID_BROADCAST
||
102 sa
->addr
.short_addr
== IEEE802154_ADDR_BROADCAST
||
103 sa
->addr
.short_addr
== IEEE802154_ADDR_UNDEF
) {
108 wpan_dev
->pan_id
= cpu_to_le16(sa
->addr
.pan_id
);
109 wpan_dev
->short_addr
= cpu_to_le16(sa
->addr
.short_addr
);
111 err
= mac802154_wpan_update_llsec(dev
);
115 spin_unlock_bh(&sdata
->mib_lock
);
119 static int mac802154_wpan_mac_addr(struct net_device
*dev
, void *p
)
121 struct ieee802154_sub_if_data
*sdata
= IEEE802154_DEV_TO_SUB_IF(dev
);
122 struct sockaddr
*addr
= p
;
123 __le64 extended_addr
;
125 if (netif_running(dev
))
128 ieee802154_be64_to_le64(&extended_addr
, addr
->sa_data
);
129 if (!ieee802154_is_valid_extended_addr(extended_addr
))
132 memcpy(dev
->dev_addr
, addr
->sa_data
, dev
->addr_len
);
133 sdata
->wpan_dev
.extended_addr
= extended_addr
;
135 return mac802154_wpan_update_llsec(dev
);
138 static int mac802154_slave_open(struct net_device
*dev
)
140 struct ieee802154_sub_if_data
*sdata
= IEEE802154_DEV_TO_SUB_IF(dev
);
141 struct ieee802154_sub_if_data
*subif
;
142 struct ieee802154_local
*local
= sdata
->local
;
147 if (sdata
->vif
.type
== IEEE802154_DEV_WPAN
) {
148 mutex_lock(&sdata
->local
->iflist_mtx
);
149 list_for_each_entry(subif
, &sdata
->local
->interfaces
, list
) {
150 if (subif
!= sdata
&&
151 subif
->vif
.type
== sdata
->vif
.type
&&
152 ieee802154_sdata_running(subif
)) {
153 mutex_unlock(&sdata
->local
->iflist_mtx
);
157 mutex_unlock(&sdata
->local
->iflist_mtx
);
160 set_bit(SDATA_STATE_RUNNING
, &sdata
->state
);
162 if (!local
->open_count
) {
163 res
= drv_start(local
);
170 netif_start_queue(dev
);
173 /* might already be clear but that doesn't matter */
174 clear_bit(SDATA_STATE_RUNNING
, &sdata
->state
);
179 static int mac802154_wpan_open(struct net_device
*dev
)
182 struct ieee802154_sub_if_data
*sdata
= IEEE802154_DEV_TO_SUB_IF(dev
);
183 struct ieee802154_local
*local
= sdata
->local
;
184 struct wpan_dev
*wpan_dev
= &sdata
->wpan_dev
;
185 struct wpan_phy
*phy
= sdata
->local
->phy
;
187 rc
= mac802154_slave_open(dev
);
191 mutex_lock(&phy
->pib_lock
);
193 if (local
->hw
.flags
& IEEE802154_HW_PROMISCUOUS
) {
194 rc
= drv_set_promiscuous_mode(local
,
195 wpan_dev
->promiscuous_mode
);
200 if (local
->hw
.flags
& IEEE802154_HW_AFILT
) {
201 rc
= drv_set_pan_id(local
, wpan_dev
->pan_id
);
205 rc
= drv_set_extended_addr(local
, wpan_dev
->extended_addr
);
209 rc
= drv_set_short_addr(local
, wpan_dev
->short_addr
);
214 if (local
->hw
.flags
& IEEE802154_HW_LBT
) {
215 rc
= drv_set_lbt_mode(local
, wpan_dev
->lbt
);
220 if (local
->hw
.flags
& IEEE802154_HW_CSMA_PARAMS
) {
221 rc
= drv_set_csma_params(local
, wpan_dev
->min_be
,
223 wpan_dev
->csma_retries
);
228 if (local
->hw
.flags
& IEEE802154_HW_FRAME_RETRIES
) {
229 rc
= drv_set_max_frame_retries(local
, wpan_dev
->frame_retries
);
234 mutex_unlock(&phy
->pib_lock
);
238 mutex_unlock(&phy
->pib_lock
);
242 static int mac802154_slave_close(struct net_device
*dev
)
244 struct ieee802154_sub_if_data
*sdata
= IEEE802154_DEV_TO_SUB_IF(dev
);
245 struct ieee802154_local
*local
= sdata
->local
;
249 netif_stop_queue(dev
);
252 clear_bit(SDATA_STATE_RUNNING
, &sdata
->state
);
254 if (!local
->open_count
)
260 static int mac802154_set_header_security(struct ieee802154_sub_if_data
*sdata
,
261 struct ieee802154_hdr
*hdr
,
262 const struct ieee802154_mac_cb
*cb
)
264 struct ieee802154_llsec_params params
;
267 mac802154_llsec_get_params(&sdata
->sec
, ¶ms
);
269 if (!params
.enabled
&& cb
->secen_override
&& cb
->secen
)
271 if (!params
.enabled
||
272 (cb
->secen_override
&& !cb
->secen
) ||
275 if (cb
->seclevel_override
&& !cb
->seclevel
)
278 level
= cb
->seclevel_override
? cb
->seclevel
: params
.out_level
;
280 hdr
->fc
.security_enabled
= 1;
281 hdr
->sec
.level
= level
;
282 hdr
->sec
.key_id_mode
= params
.out_key
.mode
;
283 if (params
.out_key
.mode
== IEEE802154_SCF_KEY_SHORT_INDEX
)
284 hdr
->sec
.short_src
= params
.out_key
.short_source
;
285 else if (params
.out_key
.mode
== IEEE802154_SCF_KEY_HW_INDEX
)
286 hdr
->sec
.extended_src
= params
.out_key
.extended_source
;
287 hdr
->sec
.key_id
= params
.out_key
.id
;
292 static int mac802154_header_create(struct sk_buff
*skb
,
293 struct net_device
*dev
,
299 struct ieee802154_hdr hdr
;
300 struct ieee802154_sub_if_data
*sdata
= IEEE802154_DEV_TO_SUB_IF(dev
);
301 struct wpan_dev
*wpan_dev
= &sdata
->wpan_dev
;
302 struct ieee802154_mac_cb
*cb
= mac_cb(skb
);
308 memset(&hdr
.fc
, 0, sizeof(hdr
.fc
));
309 hdr
.fc
.type
= cb
->type
;
310 hdr
.fc
.security_enabled
= cb
->secen
;
311 hdr
.fc
.ack_request
= cb
->ackreq
;
312 hdr
.seq
= ieee802154_mlme_ops(dev
)->get_dsn(dev
);
314 if (mac802154_set_header_security(sdata
, &hdr
, cb
) < 0)
318 spin_lock_bh(&sdata
->mib_lock
);
320 if (wpan_dev
->short_addr
== cpu_to_le16(IEEE802154_ADDR_BROADCAST
) ||
321 wpan_dev
->short_addr
== cpu_to_le16(IEEE802154_ADDR_UNDEF
) ||
322 wpan_dev
->pan_id
== cpu_to_le16(IEEE802154_PANID_BROADCAST
)) {
323 hdr
.source
.mode
= IEEE802154_ADDR_LONG
;
324 hdr
.source
.extended_addr
= wpan_dev
->extended_addr
;
326 hdr
.source
.mode
= IEEE802154_ADDR_SHORT
;
327 hdr
.source
.short_addr
= wpan_dev
->short_addr
;
330 hdr
.source
.pan_id
= wpan_dev
->pan_id
;
332 spin_unlock_bh(&sdata
->mib_lock
);
334 hdr
.source
= *(const struct ieee802154_addr
*)saddr
;
337 hdr
.dest
= *(const struct ieee802154_addr
*)daddr
;
339 hlen
= ieee802154_hdr_push(skb
, &hdr
);
343 skb_reset_mac_header(skb
);
346 if (len
> ieee802154_max_payload(&hdr
))
353 mac802154_header_parse(const struct sk_buff
*skb
, unsigned char *haddr
)
355 struct ieee802154_hdr hdr
;
356 struct ieee802154_addr
*addr
= (struct ieee802154_addr
*)haddr
;
358 if (ieee802154_hdr_peek_addrs(skb
, &hdr
) < 0) {
359 pr_debug("malformed packet\n");
364 return sizeof(*addr
);
367 static struct header_ops mac802154_header_ops
= {
368 .create
= mac802154_header_create
,
369 .parse
= mac802154_header_parse
,
372 static const struct net_device_ops mac802154_wpan_ops
= {
373 .ndo_open
= mac802154_wpan_open
,
374 .ndo_stop
= mac802154_slave_close
,
375 .ndo_start_xmit
= ieee802154_subif_start_xmit
,
376 .ndo_do_ioctl
= mac802154_wpan_ioctl
,
377 .ndo_set_mac_address
= mac802154_wpan_mac_addr
,
380 static const struct net_device_ops mac802154_monitor_ops
= {
381 .ndo_open
= mac802154_wpan_open
,
382 .ndo_stop
= mac802154_slave_close
,
383 .ndo_start_xmit
= ieee802154_monitor_start_xmit
,
386 static void mac802154_wpan_free(struct net_device
*dev
)
388 struct ieee802154_sub_if_data
*sdata
= IEEE802154_DEV_TO_SUB_IF(dev
);
390 mac802154_llsec_destroy(&sdata
->sec
);
395 static void ieee802154_if_setup(struct net_device
*dev
)
397 dev
->addr_len
= IEEE802154_EXTENDED_ADDR_LEN
;
398 memset(dev
->broadcast
, 0xff, IEEE802154_EXTENDED_ADDR_LEN
);
400 dev
->hard_header_len
= MAC802154_FRAME_HARD_HEADER_LEN
;
401 dev
->needed_tailroom
= 2 + 16; /* FCS + MIC */
402 dev
->mtu
= IEEE802154_MTU
;
403 dev
->tx_queue_len
= 300;
404 dev
->flags
= IFF_NOARP
| IFF_BROADCAST
;
408 ieee802154_setup_sdata(struct ieee802154_sub_if_data
*sdata
, int type
)
410 struct wpan_dev
*wpan_dev
= &sdata
->wpan_dev
;
412 /* set some type-dependent values */
413 sdata
->vif
.type
= type
;
414 sdata
->wpan_dev
.iftype
= type
;
416 get_random_bytes(&wpan_dev
->bsn
, 1);
417 get_random_bytes(&wpan_dev
->dsn
, 1);
419 /* defaults per 802.15.4-2011 */
420 wpan_dev
->min_be
= 3;
421 wpan_dev
->max_be
= 5;
422 wpan_dev
->csma_retries
= 4;
423 /* for compatibility, actual default is 3 */
424 wpan_dev
->frame_retries
= -1;
426 wpan_dev
->pan_id
= cpu_to_le16(IEEE802154_PANID_BROADCAST
);
427 wpan_dev
->short_addr
= cpu_to_le16(IEEE802154_ADDR_BROADCAST
);
430 case IEEE802154_DEV_WPAN
:
431 ieee802154_be64_to_le64(&wpan_dev
->extended_addr
,
432 sdata
->dev
->dev_addr
);
434 sdata
->dev
->header_ops
= &mac802154_header_ops
;
435 sdata
->dev
->destructor
= mac802154_wpan_free
;
436 sdata
->dev
->netdev_ops
= &mac802154_wpan_ops
;
437 sdata
->dev
->ml_priv
= &mac802154_mlme_wpan
;
438 wpan_dev
->promiscuous_mode
= false;
440 spin_lock_init(&sdata
->mib_lock
);
441 mutex_init(&sdata
->sec_mtx
);
443 mac802154_llsec_init(&sdata
->sec
);
445 case IEEE802154_DEV_MONITOR
:
446 sdata
->dev
->destructor
= free_netdev
;
447 sdata
->dev
->netdev_ops
= &mac802154_monitor_ops
;
448 wpan_dev
->promiscuous_mode
= true;
458 ieee802154_if_add(struct ieee802154_local
*local
, const char *name
,
459 struct wpan_dev
**new_wpan_dev
, int type
)
461 struct net_device
*ndev
= NULL
;
462 struct ieee802154_sub_if_data
*sdata
= NULL
;
467 ndev
= alloc_netdev(sizeof(*sdata
) + local
->hw
.vif_data_size
, name
,
468 NET_NAME_UNKNOWN
, ieee802154_if_setup
);
470 return ERR_PTR(-ENOMEM
);
472 ndev
->needed_headroom
= local
->hw
.extra_tx_headroom
;
474 ret
= dev_alloc_name(ndev
, ndev
->name
);
479 case IEEE802154_DEV_WPAN
:
480 ndev
->type
= ARPHRD_IEEE802154
;
482 case IEEE802154_DEV_MONITOR
:
483 ndev
->type
= ARPHRD_IEEE802154_MONITOR
;
490 ieee802154_le64_to_be64(ndev
->perm_addr
,
491 &local
->hw
.phy
->perm_extended_addr
);
492 memcpy(ndev
->dev_addr
, ndev
->perm_addr
, IEEE802154_EXTENDED_ADDR_LEN
);
493 /* TODO check this */
494 SET_NETDEV_DEV(ndev
, &local
->phy
->dev
);
495 sdata
= netdev_priv(ndev
);
496 ndev
->ieee802154_ptr
= &sdata
->wpan_dev
;
497 memcpy(sdata
->name
, ndev
->name
, IFNAMSIZ
);
499 sdata
->wpan_dev
.wpan_phy
= local
->hw
.phy
;
500 sdata
->local
= local
;
502 /* setup type-dependent data */
503 ret
= ieee802154_setup_sdata(sdata
, type
);
508 ret
= register_netdevice(ndev
);
513 mutex_lock(&local
->iflist_mtx
);
514 list_add_tail_rcu(&sdata
->list
, &local
->interfaces
);
515 mutex_unlock(&local
->iflist_mtx
);
518 *new_wpan_dev
= &sdata
->wpan_dev
;
527 void ieee802154_if_remove(struct ieee802154_sub_if_data
*sdata
)
531 mutex_lock(&sdata
->local
->iflist_mtx
);
532 list_del_rcu(&sdata
->list
);
533 mutex_unlock(&sdata
->local
->iflist_mtx
);
536 unregister_netdevice(sdata
->dev
);