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.
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
19 * Sergey Lapin <slapin@ossfans.org>
20 * Maxim Gorbachyov <maxim.gorbachev@siemens.com>
21 * Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
24 #include <linux/netdevice.h>
25 #include <linux/module.h>
26 #include <linux/if_arp.h>
28 #include <net/rtnetlink.h>
29 #include <linux/nl802154.h>
30 #include <net/af_ieee802154.h>
31 #include <net/mac802154.h>
32 #include <net/ieee802154_netdev.h>
33 #include <net/ieee802154.h>
34 #include <net/wpan-phy.h>
36 #include "mac802154.h"
39 mac802154_wpan_ioctl(struct net_device
*dev
, struct ifreq
*ifr
, int cmd
)
41 struct mac802154_sub_if_data
*priv
= netdev_priv(dev
);
42 struct sockaddr_ieee802154
*sa
=
43 (struct sockaddr_ieee802154
*)&ifr
->ifr_addr
;
44 int err
= -ENOIOCTLCMD
;
46 spin_lock_bh(&priv
->mib_lock
);
51 u16 pan_id
, short_addr
;
53 pan_id
= le16_to_cpu(priv
->pan_id
);
54 short_addr
= le16_to_cpu(priv
->short_addr
);
55 if (pan_id
== IEEE802154_PANID_BROADCAST
||
56 short_addr
== IEEE802154_ADDR_BROADCAST
) {
61 sa
->family
= AF_IEEE802154
;
62 sa
->addr
.addr_type
= IEEE802154_ADDR_SHORT
;
63 sa
->addr
.pan_id
= pan_id
;
64 sa
->addr
.short_addr
= short_addr
;
71 "Using DEBUGing ioctl SIOCSIFADDR isn't recommened!\n");
72 if (sa
->family
!= AF_IEEE802154
||
73 sa
->addr
.addr_type
!= IEEE802154_ADDR_SHORT
||
74 sa
->addr
.pan_id
== IEEE802154_PANID_BROADCAST
||
75 sa
->addr
.short_addr
== IEEE802154_ADDR_BROADCAST
||
76 sa
->addr
.short_addr
== IEEE802154_ADDR_UNDEF
) {
81 priv
->pan_id
= cpu_to_le16(sa
->addr
.pan_id
);
82 priv
->short_addr
= cpu_to_le16(sa
->addr
.short_addr
);
88 spin_unlock_bh(&priv
->mib_lock
);
92 static int mac802154_wpan_mac_addr(struct net_device
*dev
, void *p
)
94 struct sockaddr
*addr
= p
;
96 if (netif_running(dev
))
99 /* FIXME: validate addr */
100 memcpy(dev
->dev_addr
, addr
->sa_data
, dev
->addr_len
);
101 mac802154_dev_set_ieee_addr(dev
);
105 int mac802154_set_mac_params(struct net_device
*dev
,
106 const struct ieee802154_mac_params
*params
)
108 struct mac802154_sub_if_data
*priv
= netdev_priv(dev
);
110 mutex_lock(&priv
->hw
->slaves_mtx
);
111 priv
->mac_params
= *params
;
112 mutex_unlock(&priv
->hw
->slaves_mtx
);
117 void mac802154_get_mac_params(struct net_device
*dev
,
118 struct ieee802154_mac_params
*params
)
120 struct mac802154_sub_if_data
*priv
= netdev_priv(dev
);
122 mutex_lock(&priv
->hw
->slaves_mtx
);
123 *params
= priv
->mac_params
;
124 mutex_unlock(&priv
->hw
->slaves_mtx
);
127 int mac802154_wpan_open(struct net_device
*dev
)
130 struct mac802154_sub_if_data
*priv
= netdev_priv(dev
);
131 struct wpan_phy
*phy
= priv
->hw
->phy
;
133 rc
= mac802154_slave_open(dev
);
137 mutex_lock(&phy
->pib_lock
);
139 if (phy
->set_txpower
) {
140 rc
= phy
->set_txpower(phy
, priv
->mac_params
.transmit_power
);
146 rc
= phy
->set_lbt(phy
, priv
->mac_params
.lbt
);
151 if (phy
->set_cca_mode
) {
152 rc
= phy
->set_cca_mode(phy
, priv
->mac_params
.cca_mode
);
157 if (phy
->set_cca_ed_level
) {
158 rc
= phy
->set_cca_ed_level(phy
, priv
->mac_params
.cca_ed_level
);
163 if (phy
->set_csma_params
) {
164 rc
= phy
->set_csma_params(phy
, priv
->mac_params
.min_be
,
165 priv
->mac_params
.max_be
,
166 priv
->mac_params
.csma_retries
);
171 if (phy
->set_frame_retries
) {
172 rc
= phy
->set_frame_retries(phy
,
173 priv
->mac_params
.frame_retries
);
178 mutex_unlock(&phy
->pib_lock
);
182 mutex_unlock(&phy
->pib_lock
);
186 static int mac802154_header_create(struct sk_buff
*skb
,
187 struct net_device
*dev
,
193 struct ieee802154_hdr hdr
;
194 struct mac802154_sub_if_data
*priv
= netdev_priv(dev
);
200 memset(&hdr
.fc
, 0, sizeof(hdr
.fc
));
201 hdr
.fc
.type
= mac_cb_type(skb
);
202 hdr
.fc
.security_enabled
= mac_cb_is_secen(skb
);
203 hdr
.fc
.ack_request
= mac_cb_is_ackreq(skb
);
206 spin_lock_bh(&priv
->mib_lock
);
208 if (priv
->short_addr
== cpu_to_le16(IEEE802154_ADDR_BROADCAST
) ||
209 priv
->short_addr
== cpu_to_le16(IEEE802154_ADDR_UNDEF
) ||
210 priv
->pan_id
== cpu_to_le16(IEEE802154_PANID_BROADCAST
)) {
211 hdr
.source
.mode
= IEEE802154_ADDR_LONG
;
212 hdr
.source
.extended_addr
= priv
->extended_addr
;
214 hdr
.source
.mode
= IEEE802154_ADDR_SHORT
;
215 hdr
.source
.short_addr
= priv
->short_addr
;
218 hdr
.source
.pan_id
= priv
->pan_id
;
220 spin_unlock_bh(&priv
->mib_lock
);
222 hdr
.source
= *(const struct ieee802154_addr
*)saddr
;
225 hdr
.dest
= *(const struct ieee802154_addr
*)daddr
;
227 hlen
= ieee802154_hdr_push(skb
, &hdr
);
231 skb_reset_mac_header(skb
);
234 if (hlen
+ len
+ 2 > dev
->mtu
)
241 mac802154_header_parse(const struct sk_buff
*skb
, unsigned char *haddr
)
243 struct ieee802154_hdr hdr
;
244 struct ieee802154_addr
*addr
= (struct ieee802154_addr
*)haddr
;
246 if (ieee802154_hdr_peek_addrs(skb
, &hdr
) < 0) {
247 pr_debug("malformed packet\n");
252 return sizeof(*addr
);
256 mac802154_wpan_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
258 struct mac802154_sub_if_data
*priv
;
261 priv
= netdev_priv(dev
);
263 spin_lock_bh(&priv
->mib_lock
);
266 spin_unlock_bh(&priv
->mib_lock
);
268 if (chan
== MAC802154_CHAN_NONE
||
269 page
>= WPAN_NUM_PAGES
||
270 chan
>= WPAN_NUM_CHANNELS
) {
275 skb
->skb_iif
= dev
->ifindex
;
276 dev
->stats
.tx_packets
++;
277 dev
->stats
.tx_bytes
+= skb
->len
;
279 return mac802154_tx(priv
->hw
, skb
, page
, chan
);
282 static struct header_ops mac802154_header_ops
= {
283 .create
= mac802154_header_create
,
284 .parse
= mac802154_header_parse
,
287 static const struct net_device_ops mac802154_wpan_ops
= {
288 .ndo_open
= mac802154_wpan_open
,
289 .ndo_stop
= mac802154_slave_close
,
290 .ndo_start_xmit
= mac802154_wpan_xmit
,
291 .ndo_do_ioctl
= mac802154_wpan_ioctl
,
292 .ndo_set_mac_address
= mac802154_wpan_mac_addr
,
295 void mac802154_wpan_setup(struct net_device
*dev
)
297 struct mac802154_sub_if_data
*priv
;
299 dev
->addr_len
= IEEE802154_ADDR_LEN
;
300 memset(dev
->broadcast
, 0xff, IEEE802154_ADDR_LEN
);
302 dev
->hard_header_len
= MAC802154_FRAME_HARD_HEADER_LEN
;
303 dev
->header_ops
= &mac802154_header_ops
;
304 dev
->needed_tailroom
= 2; /* FCS */
305 dev
->mtu
= IEEE802154_MTU
;
306 dev
->tx_queue_len
= 300;
307 dev
->type
= ARPHRD_IEEE802154
;
308 dev
->flags
= IFF_NOARP
| IFF_BROADCAST
;
309 dev
->watchdog_timeo
= 0;
311 dev
->destructor
= free_netdev
;
312 dev
->netdev_ops
= &mac802154_wpan_ops
;
313 dev
->ml_priv
= &mac802154_mlme_wpan
;
315 priv
= netdev_priv(dev
);
316 priv
->type
= IEEE802154_DEV_WPAN
;
318 priv
->chan
= MAC802154_CHAN_NONE
;
321 spin_lock_init(&priv
->mib_lock
);
323 get_random_bytes(&priv
->bsn
, 1);
324 get_random_bytes(&priv
->dsn
, 1);
326 /* defaults per 802.15.4-2011 */
327 priv
->mac_params
.min_be
= 3;
328 priv
->mac_params
.max_be
= 5;
329 priv
->mac_params
.csma_retries
= 4;
330 priv
->mac_params
.frame_retries
= -1; /* for compatibility, actual default is 3 */
332 priv
->pan_id
= cpu_to_le16(IEEE802154_PANID_BROADCAST
);
333 priv
->short_addr
= cpu_to_le16(IEEE802154_ADDR_BROADCAST
);
336 static int mac802154_process_data(struct net_device
*dev
, struct sk_buff
*skb
)
338 return netif_rx_ni(skb
);
342 mac802154_subif_frame(struct mac802154_sub_if_data
*sdata
, struct sk_buff
*skb
)
346 pr_debug("getting packet via slave interface %s\n", sdata
->dev
->name
);
348 spin_lock_bh(&sdata
->mib_lock
);
350 span
= sdata
->pan_id
;
351 sshort
= sdata
->short_addr
;
353 switch (mac_cb(skb
)->dest
.mode
) {
354 case IEEE802154_ADDR_NONE
:
355 if (mac_cb(skb
)->dest
.mode
!= IEEE802154_ADDR_NONE
)
356 /* FIXME: check if we are PAN coordinator */
357 skb
->pkt_type
= PACKET_OTHERHOST
;
359 /* ACK comes with both addresses empty */
360 skb
->pkt_type
= PACKET_HOST
;
362 case IEEE802154_ADDR_LONG
:
363 if (mac_cb(skb
)->dest
.pan_id
!= span
&&
364 mac_cb(skb
)->dest
.pan_id
!= cpu_to_le16(IEEE802154_PANID_BROADCAST
))
365 skb
->pkt_type
= PACKET_OTHERHOST
;
366 else if (mac_cb(skb
)->dest
.extended_addr
== sdata
->extended_addr
)
367 skb
->pkt_type
= PACKET_HOST
;
369 skb
->pkt_type
= PACKET_OTHERHOST
;
371 case IEEE802154_ADDR_SHORT
:
372 if (mac_cb(skb
)->dest
.pan_id
!= span
&&
373 mac_cb(skb
)->dest
.pan_id
!= cpu_to_le16(IEEE802154_PANID_BROADCAST
))
374 skb
->pkt_type
= PACKET_OTHERHOST
;
375 else if (mac_cb(skb
)->dest
.short_addr
== sshort
)
376 skb
->pkt_type
= PACKET_HOST
;
377 else if (mac_cb(skb
)->dest
.short_addr
==
378 cpu_to_le16(IEEE802154_ADDR_BROADCAST
))
379 skb
->pkt_type
= PACKET_BROADCAST
;
381 skb
->pkt_type
= PACKET_OTHERHOST
;
387 spin_unlock_bh(&sdata
->mib_lock
);
389 skb
->dev
= sdata
->dev
;
391 sdata
->dev
->stats
.rx_packets
++;
392 sdata
->dev
->stats
.rx_bytes
+= skb
->len
;
394 switch (mac_cb_type(skb
)) {
395 case IEEE802154_FC_TYPE_DATA
:
396 return mac802154_process_data(sdata
->dev
, skb
);
398 pr_warn("ieee802154: bad frame received (type = %d)\n",
405 static void mac802154_print_addr(const char *name
,
406 const struct ieee802154_addr
*addr
)
408 if (addr
->mode
== IEEE802154_ADDR_NONE
)
409 pr_debug("%s not present\n", name
);
411 pr_debug("%s PAN ID: %04x\n", name
, le16_to_cpu(addr
->pan_id
));
412 if (addr
->mode
== IEEE802154_ADDR_SHORT
) {
413 pr_debug("%s is short: %04x\n", name
,
414 le16_to_cpu(addr
->short_addr
));
416 u64 hw
= swab64((__force u64
) addr
->extended_addr
);
418 pr_debug("%s is hardware: %8phC\n", name
, &hw
);
422 static int mac802154_parse_frame_start(struct sk_buff
*skb
)
425 struct ieee802154_hdr hdr
;
427 hlen
= ieee802154_hdr_pull(skb
, &hdr
);
433 pr_debug("fc: %04x dsn: %02x\n", le16_to_cpup((__le16
*)&hdr
.fc
),
436 mac_cb(skb
)->flags
= hdr
.fc
.type
;
438 if (hdr
.fc
.ack_request
)
439 mac_cb(skb
)->flags
|= MAC_CB_FLAG_ACKREQ
;
440 if (hdr
.fc
.security_enabled
)
441 mac_cb(skb
)->flags
|= MAC_CB_FLAG_SECEN
;
443 mac802154_print_addr("destination", &hdr
.dest
);
444 mac802154_print_addr("source", &hdr
.source
);
446 mac_cb(skb
)->source
= hdr
.source
;
447 mac_cb(skb
)->dest
= hdr
.dest
;
449 if (hdr
.fc
.security_enabled
) {
452 pr_debug("seclevel %i\n", hdr
.sec
.level
);
454 switch (hdr
.sec
.key_id_mode
) {
455 case IEEE802154_SCF_KEY_IMPLICIT
:
456 pr_debug("implicit key\n");
459 case IEEE802154_SCF_KEY_INDEX
:
460 pr_debug("key %02x\n", hdr
.sec
.key_id
);
463 case IEEE802154_SCF_KEY_SHORT_INDEX
:
464 pr_debug("key %04x:%04x %02x\n",
465 le32_to_cpu(hdr
.sec
.short_src
) >> 16,
466 le32_to_cpu(hdr
.sec
.short_src
) & 0xffff,
470 case IEEE802154_SCF_KEY_HW_INDEX
:
471 key
= swab64((__force u64
) hdr
.sec
.extended_src
);
472 pr_debug("key source %8phC %02x\n", &key
,
483 void mac802154_wpans_rx(struct mac802154_priv
*priv
, struct sk_buff
*skb
)
486 struct sk_buff
*sskb
;
487 struct mac802154_sub_if_data
*sdata
;
489 ret
= mac802154_parse_frame_start(skb
);
491 pr_debug("got invalid frame\n");
496 list_for_each_entry_rcu(sdata
, &priv
->slaves
, list
) {
497 if (sdata
->type
!= IEEE802154_DEV_WPAN
)
500 sskb
= skb_clone(skb
, GFP_ATOMIC
);
502 mac802154_subif_frame(sdata
, sskb
);