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 static int mac802154_header_create(struct sk_buff
*skb
,
106 struct net_device
*dev
,
112 struct ieee802154_hdr hdr
;
113 struct mac802154_sub_if_data
*priv
= netdev_priv(dev
);
119 memset(&hdr
.fc
, 0, sizeof(hdr
.fc
));
120 hdr
.fc
.type
= mac_cb_type(skb
);
121 hdr
.fc
.security_enabled
= mac_cb_is_secen(skb
);
122 hdr
.fc
.ack_request
= mac_cb_is_ackreq(skb
);
125 spin_lock_bh(&priv
->mib_lock
);
127 if (priv
->short_addr
== cpu_to_le16(IEEE802154_ADDR_BROADCAST
) ||
128 priv
->short_addr
== cpu_to_le16(IEEE802154_ADDR_UNDEF
) ||
129 priv
->pan_id
== cpu_to_le16(IEEE802154_PANID_BROADCAST
)) {
130 hdr
.source
.mode
= IEEE802154_ADDR_LONG
;
131 hdr
.source
.extended_addr
= priv
->extended_addr
;
133 hdr
.source
.mode
= IEEE802154_ADDR_SHORT
;
134 hdr
.source
.short_addr
= priv
->short_addr
;
137 hdr
.source
.pan_id
= priv
->pan_id
;
139 spin_unlock_bh(&priv
->mib_lock
);
141 hdr
.source
= *(const struct ieee802154_addr
*)saddr
;
144 hdr
.dest
= *(const struct ieee802154_addr
*)daddr
;
146 hlen
= ieee802154_hdr_push(skb
, &hdr
);
150 skb_reset_mac_header(skb
);
157 mac802154_header_parse(const struct sk_buff
*skb
, unsigned char *haddr
)
159 struct ieee802154_hdr hdr
;
160 struct ieee802154_addr
*addr
= (struct ieee802154_addr
*)haddr
;
162 if (ieee802154_hdr_peek_addrs(skb
, &hdr
) < 0) {
163 pr_debug("malformed packet\n");
168 return sizeof(*addr
);
172 mac802154_wpan_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
174 struct mac802154_sub_if_data
*priv
;
177 priv
= netdev_priv(dev
);
179 spin_lock_bh(&priv
->mib_lock
);
182 spin_unlock_bh(&priv
->mib_lock
);
184 if (chan
== MAC802154_CHAN_NONE
||
185 page
>= WPAN_NUM_PAGES
||
186 chan
>= WPAN_NUM_CHANNELS
) {
191 skb
->skb_iif
= dev
->ifindex
;
192 dev
->stats
.tx_packets
++;
193 dev
->stats
.tx_bytes
+= skb
->len
;
195 return mac802154_tx(priv
->hw
, skb
, page
, chan
);
198 static struct header_ops mac802154_header_ops
= {
199 .create
= mac802154_header_create
,
200 .parse
= mac802154_header_parse
,
203 static const struct net_device_ops mac802154_wpan_ops
= {
204 .ndo_open
= mac802154_slave_open
,
205 .ndo_stop
= mac802154_slave_close
,
206 .ndo_start_xmit
= mac802154_wpan_xmit
,
207 .ndo_do_ioctl
= mac802154_wpan_ioctl
,
208 .ndo_set_mac_address
= mac802154_wpan_mac_addr
,
211 void mac802154_wpan_setup(struct net_device
*dev
)
213 struct mac802154_sub_if_data
*priv
;
215 dev
->addr_len
= IEEE802154_ADDR_LEN
;
216 memset(dev
->broadcast
, 0xff, IEEE802154_ADDR_LEN
);
218 dev
->hard_header_len
= MAC802154_FRAME_HARD_HEADER_LEN
;
219 dev
->header_ops
= &mac802154_header_ops
;
220 dev
->needed_tailroom
= 2; /* FCS */
221 dev
->mtu
= IEEE802154_MTU
;
222 dev
->tx_queue_len
= 300;
223 dev
->type
= ARPHRD_IEEE802154
;
224 dev
->flags
= IFF_NOARP
| IFF_BROADCAST
;
225 dev
->watchdog_timeo
= 0;
227 dev
->destructor
= free_netdev
;
228 dev
->netdev_ops
= &mac802154_wpan_ops
;
229 dev
->ml_priv
= &mac802154_mlme_wpan
;
231 priv
= netdev_priv(dev
);
232 priv
->type
= IEEE802154_DEV_WPAN
;
234 priv
->chan
= MAC802154_CHAN_NONE
;
237 spin_lock_init(&priv
->mib_lock
);
239 get_random_bytes(&priv
->bsn
, 1);
240 get_random_bytes(&priv
->dsn
, 1);
242 priv
->pan_id
= cpu_to_le16(IEEE802154_PANID_BROADCAST
);
243 priv
->short_addr
= cpu_to_le16(IEEE802154_ADDR_BROADCAST
);
246 static int mac802154_process_data(struct net_device
*dev
, struct sk_buff
*skb
)
248 return netif_rx_ni(skb
);
252 mac802154_subif_frame(struct mac802154_sub_if_data
*sdata
, struct sk_buff
*skb
)
256 pr_debug("getting packet via slave interface %s\n", sdata
->dev
->name
);
258 spin_lock_bh(&sdata
->mib_lock
);
260 span
= sdata
->pan_id
;
261 sshort
= sdata
->short_addr
;
263 switch (mac_cb(skb
)->dest
.mode
) {
264 case IEEE802154_ADDR_NONE
:
265 if (mac_cb(skb
)->dest
.mode
!= IEEE802154_ADDR_NONE
)
266 /* FIXME: check if we are PAN coordinator */
267 skb
->pkt_type
= PACKET_OTHERHOST
;
269 /* ACK comes with both addresses empty */
270 skb
->pkt_type
= PACKET_HOST
;
272 case IEEE802154_ADDR_LONG
:
273 if (mac_cb(skb
)->dest
.pan_id
!= span
&&
274 mac_cb(skb
)->dest
.pan_id
!= cpu_to_le16(IEEE802154_PANID_BROADCAST
))
275 skb
->pkt_type
= PACKET_OTHERHOST
;
276 else if (mac_cb(skb
)->dest
.extended_addr
== sdata
->extended_addr
)
277 skb
->pkt_type
= PACKET_HOST
;
279 skb
->pkt_type
= PACKET_OTHERHOST
;
281 case IEEE802154_ADDR_SHORT
:
282 if (mac_cb(skb
)->dest
.pan_id
!= span
&&
283 mac_cb(skb
)->dest
.pan_id
!= cpu_to_le16(IEEE802154_PANID_BROADCAST
))
284 skb
->pkt_type
= PACKET_OTHERHOST
;
285 else if (mac_cb(skb
)->dest
.short_addr
== sshort
)
286 skb
->pkt_type
= PACKET_HOST
;
287 else if (mac_cb(skb
)->dest
.short_addr
==
288 cpu_to_le16(IEEE802154_ADDR_BROADCAST
))
289 skb
->pkt_type
= PACKET_BROADCAST
;
291 skb
->pkt_type
= PACKET_OTHERHOST
;
297 spin_unlock_bh(&sdata
->mib_lock
);
299 skb
->dev
= sdata
->dev
;
301 sdata
->dev
->stats
.rx_packets
++;
302 sdata
->dev
->stats
.rx_bytes
+= skb
->len
;
304 switch (mac_cb_type(skb
)) {
305 case IEEE802154_FC_TYPE_DATA
:
306 return mac802154_process_data(sdata
->dev
, skb
);
308 pr_warn("ieee802154: bad frame received (type = %d)\n",
315 static void mac802154_print_addr(const char *name
,
316 const struct ieee802154_addr
*addr
)
318 if (addr
->mode
== IEEE802154_ADDR_NONE
)
319 pr_debug("%s not present\n", name
);
321 pr_debug("%s PAN ID: %04x\n", name
, le16_to_cpu(addr
->pan_id
));
322 if (addr
->mode
== IEEE802154_ADDR_SHORT
) {
323 pr_debug("%s is short: %04x\n", name
,
324 le16_to_cpu(addr
->short_addr
));
326 u64 hw
= swab64((__force u64
) addr
->extended_addr
);
328 pr_debug("%s is hardware: %8phC\n", name
, &hw
);
332 static int mac802154_parse_frame_start(struct sk_buff
*skb
)
335 struct ieee802154_hdr hdr
;
337 hlen
= ieee802154_hdr_pull(skb
, &hdr
);
343 pr_debug("fc: %04x dsn: %02x\n", le16_to_cpup((__le16
*)&hdr
.fc
),
346 mac_cb(skb
)->flags
= hdr
.fc
.type
;
348 if (hdr
.fc
.ack_request
)
349 mac_cb(skb
)->flags
|= MAC_CB_FLAG_ACKREQ
;
350 if (hdr
.fc
.security_enabled
)
351 mac_cb(skb
)->flags
|= MAC_CB_FLAG_SECEN
;
353 mac802154_print_addr("destination", &hdr
.dest
);
354 mac802154_print_addr("source", &hdr
.source
);
356 mac_cb(skb
)->source
= hdr
.source
;
357 mac_cb(skb
)->dest
= hdr
.dest
;
359 if (hdr
.fc
.security_enabled
) {
362 pr_debug("seclevel %i\n", hdr
.sec
.level
);
364 switch (hdr
.sec
.key_id_mode
) {
365 case IEEE802154_SCF_KEY_IMPLICIT
:
366 pr_debug("implicit key\n");
369 case IEEE802154_SCF_KEY_INDEX
:
370 pr_debug("key %02x\n", hdr
.sec
.key_id
);
373 case IEEE802154_SCF_KEY_SHORT_INDEX
:
374 pr_debug("key %04x:%04x %02x\n",
375 le32_to_cpu(hdr
.sec
.short_src
) >> 16,
376 le32_to_cpu(hdr
.sec
.short_src
) & 0xffff,
380 case IEEE802154_SCF_KEY_HW_INDEX
:
381 key
= swab64((__force u64
) hdr
.sec
.extended_src
);
382 pr_debug("key source %8phC %02x\n", &key
,
393 void mac802154_wpans_rx(struct mac802154_priv
*priv
, struct sk_buff
*skb
)
396 struct sk_buff
*sskb
;
397 struct mac802154_sub_if_data
*sdata
;
399 ret
= mac802154_parse_frame_start(skb
);
401 pr_debug("got invalid frame\n");
406 list_for_each_entry_rcu(sdata
, &priv
->slaves
, list
) {
407 if (sdata
->type
!= IEEE802154_DEV_WPAN
)
410 sskb
= skb_clone(skb
, GFP_ATOMIC
);
412 mac802154_subif_frame(sdata
, sskb
);