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alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +00001/*
2 * Copyright 2007-2012 Siemens AG
3 *
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.
7 *
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.
12 *
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.
16 *
17 * Written by:
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>
22 */
23
24#include <linux/netdevice.h>
25#include <linux/module.h>
26#include <linux/if_arp.h>
27
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>
35
36#include "mac802154.h"
37
Phoebe Buckheister9b0bb4a2014-05-16 17:46:43 +020038static int mac802154_wpan_update_llsec(struct net_device *dev)
39{
40 struct mac802154_sub_if_data *priv = netdev_priv(dev);
41 struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
42 int rc = 0;
43
44 if (ops->llsec) {
45 struct ieee802154_llsec_params params;
46 int changed = 0;
47
48 params.pan_id = priv->pan_id;
49 changed |= IEEE802154_LLSEC_PARAM_PAN_ID;
50
51 params.hwaddr = priv->extended_addr;
52 changed |= IEEE802154_LLSEC_PARAM_HWADDR;
53
54 rc = ops->llsec->set_params(dev, &params, changed);
55 }
56
57 return rc;
58}
59
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +000060static int
61mac802154_wpan_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
62{
63 struct mac802154_sub_if_data *priv = netdev_priv(dev);
64 struct sockaddr_ieee802154 *sa =
65 (struct sockaddr_ieee802154 *)&ifr->ifr_addr;
66 int err = -ENOIOCTLCMD;
67
68 spin_lock_bh(&priv->mib_lock);
69
70 switch (cmd) {
71 case SIOCGIFADDR:
Phoebe Buckheisterb70ab2e2014-03-14 21:23:59 +010072 {
73 u16 pan_id, short_addr;
74
75 pan_id = le16_to_cpu(priv->pan_id);
76 short_addr = le16_to_cpu(priv->short_addr);
77 if (pan_id == IEEE802154_PANID_BROADCAST ||
78 short_addr == IEEE802154_ADDR_BROADCAST) {
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +000079 err = -EADDRNOTAVAIL;
80 break;
81 }
82
83 sa->family = AF_IEEE802154;
84 sa->addr.addr_type = IEEE802154_ADDR_SHORT;
Phoebe Buckheisterb70ab2e2014-03-14 21:23:59 +010085 sa->addr.pan_id = pan_id;
86 sa->addr.short_addr = short_addr;
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +000087
88 err = 0;
89 break;
Phoebe Buckheisterb70ab2e2014-03-14 21:23:59 +010090 }
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +000091 case SIOCSIFADDR:
92 dev_warn(&dev->dev,
93 "Using DEBUGing ioctl SIOCSIFADDR isn't recommened!\n");
94 if (sa->family != AF_IEEE802154 ||
95 sa->addr.addr_type != IEEE802154_ADDR_SHORT ||
96 sa->addr.pan_id == IEEE802154_PANID_BROADCAST ||
97 sa->addr.short_addr == IEEE802154_ADDR_BROADCAST ||
98 sa->addr.short_addr == IEEE802154_ADDR_UNDEF) {
99 err = -EINVAL;
100 break;
101 }
102
Phoebe Buckheisterb70ab2e2014-03-14 21:23:59 +0100103 priv->pan_id = cpu_to_le16(sa->addr.pan_id);
104 priv->short_addr = cpu_to_le16(sa->addr.short_addr);
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000105
Phoebe Buckheister9b0bb4a2014-05-16 17:46:43 +0200106 err = mac802154_wpan_update_llsec(dev);
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000107 break;
108 }
109
110 spin_unlock_bh(&priv->mib_lock);
111 return err;
112}
113
114static int mac802154_wpan_mac_addr(struct net_device *dev, void *p)
115{
116 struct sockaddr *addr = p;
117
118 if (netif_running(dev))
119 return -EBUSY;
120
121 /* FIXME: validate addr */
122 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
123 mac802154_dev_set_ieee_addr(dev);
Phoebe Buckheister9b0bb4a2014-05-16 17:46:43 +0200124 return mac802154_wpan_update_llsec(dev);
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000125}
126
Phoebe Buckheistere462ded2014-03-31 21:37:46 +0200127int mac802154_set_mac_params(struct net_device *dev,
128 const struct ieee802154_mac_params *params)
129{
130 struct mac802154_sub_if_data *priv = netdev_priv(dev);
131
132 mutex_lock(&priv->hw->slaves_mtx);
133 priv->mac_params = *params;
134 mutex_unlock(&priv->hw->slaves_mtx);
135
136 return 0;
137}
138
139void mac802154_get_mac_params(struct net_device *dev,
140 struct ieee802154_mac_params *params)
141{
142 struct mac802154_sub_if_data *priv = netdev_priv(dev);
143
144 mutex_lock(&priv->hw->slaves_mtx);
145 *params = priv->mac_params;
146 mutex_unlock(&priv->hw->slaves_mtx);
147}
148
Phoebe Buckheister6ef00232014-05-14 17:43:11 +0200149static int mac802154_wpan_open(struct net_device *dev)
Phoebe Buckheistere462ded2014-03-31 21:37:46 +0200150{
151 int rc;
152 struct mac802154_sub_if_data *priv = netdev_priv(dev);
153 struct wpan_phy *phy = priv->hw->phy;
154
155 rc = mac802154_slave_open(dev);
156 if (rc < 0)
157 return rc;
158
159 mutex_lock(&phy->pib_lock);
160
161 if (phy->set_txpower) {
162 rc = phy->set_txpower(phy, priv->mac_params.transmit_power);
163 if (rc < 0)
164 goto out;
165 }
166
167 if (phy->set_lbt) {
168 rc = phy->set_lbt(phy, priv->mac_params.lbt);
169 if (rc < 0)
170 goto out;
171 }
172
173 if (phy->set_cca_mode) {
174 rc = phy->set_cca_mode(phy, priv->mac_params.cca_mode);
175 if (rc < 0)
176 goto out;
177 }
178
179 if (phy->set_cca_ed_level) {
180 rc = phy->set_cca_ed_level(phy, priv->mac_params.cca_ed_level);
181 if (rc < 0)
182 goto out;
183 }
184
185 if (phy->set_csma_params) {
186 rc = phy->set_csma_params(phy, priv->mac_params.min_be,
187 priv->mac_params.max_be,
188 priv->mac_params.csma_retries);
189 if (rc < 0)
190 goto out;
191 }
192
193 if (phy->set_frame_retries) {
194 rc = phy->set_frame_retries(phy,
195 priv->mac_params.frame_retries);
196 if (rc < 0)
197 goto out;
198 }
199
200 mutex_unlock(&phy->pib_lock);
201 return 0;
202
203out:
204 mutex_unlock(&phy->pib_lock);
205 return rc;
206}
207
Phoebe Buckheisterf30be4d2014-05-16 17:46:40 +0200208static int mac802154_set_header_security(struct mac802154_sub_if_data *priv,
209 struct ieee802154_hdr *hdr,
210 const struct ieee802154_mac_cb *cb)
211{
212 struct ieee802154_llsec_params params;
213 u8 level;
214
215 mac802154_llsec_get_params(&priv->sec, &params);
216
217 if (!params.enabled && cb->secen_override && cb->secen)
218 return -EINVAL;
219 if (!params.enabled ||
220 (cb->secen_override && !cb->secen) ||
221 !params.out_level)
222 return 0;
223 if (cb->seclevel_override && !cb->seclevel)
224 return -EINVAL;
225
226 level = cb->seclevel_override ? cb->seclevel : params.out_level;
227
228 hdr->fc.security_enabled = 1;
229 hdr->sec.level = level;
230 hdr->sec.key_id_mode = params.out_key.mode;
231 if (params.out_key.mode == IEEE802154_SCF_KEY_SHORT_INDEX)
232 hdr->sec.short_src = params.out_key.short_source;
233 else if (params.out_key.mode == IEEE802154_SCF_KEY_HW_INDEX)
234 hdr->sec.extended_src = params.out_key.extended_source;
235 hdr->sec.key_id = params.out_key.id;
236
237 return 0;
238}
239
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000240static int mac802154_header_create(struct sk_buff *skb,
241 struct net_device *dev,
242 unsigned short type,
Phoebe Buckheistere6278d92014-03-14 21:24:01 +0100243 const void *daddr,
244 const void *saddr,
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000245 unsigned len)
246{
Phoebe Buckheistere6278d92014-03-14 21:24:01 +0100247 struct ieee802154_hdr hdr;
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000248 struct mac802154_sub_if_data *priv = netdev_priv(dev);
Phoebe Buckheister32edc402014-05-14 17:43:08 +0200249 struct ieee802154_mac_cb *cb = mac_cb(skb);
Phoebe Buckheistere6278d92014-03-14 21:24:01 +0100250 int hlen;
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000251
252 if (!daddr)
253 return -EINVAL;
254
Phoebe Buckheistere6278d92014-03-14 21:24:01 +0100255 memset(&hdr.fc, 0, sizeof(hdr.fc));
Phoebe Buckheister32edc402014-05-14 17:43:08 +0200256 hdr.fc.type = cb->type;
257 hdr.fc.security_enabled = cb->secen;
258 hdr.fc.ack_request = cb->ackreq;
259 hdr.seq = ieee802154_mlme_ops(dev)->get_dsn(dev);
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000260
Phoebe Buckheisterf30be4d2014-05-16 17:46:40 +0200261 if (mac802154_set_header_security(priv, &hdr, cb) < 0)
262 return -EINVAL;
263
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000264 if (!saddr) {
265 spin_lock_bh(&priv->mib_lock);
266
Phoebe Buckheisterb70ab2e2014-03-14 21:23:59 +0100267 if (priv->short_addr == cpu_to_le16(IEEE802154_ADDR_BROADCAST) ||
268 priv->short_addr == cpu_to_le16(IEEE802154_ADDR_UNDEF) ||
269 priv->pan_id == cpu_to_le16(IEEE802154_PANID_BROADCAST)) {
Phoebe Buckheistere6278d92014-03-14 21:24:01 +0100270 hdr.source.mode = IEEE802154_ADDR_LONG;
271 hdr.source.extended_addr = priv->extended_addr;
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000272 } else {
Phoebe Buckheistere6278d92014-03-14 21:24:01 +0100273 hdr.source.mode = IEEE802154_ADDR_SHORT;
274 hdr.source.short_addr = priv->short_addr;
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000275 }
276
Phoebe Buckheistere6278d92014-03-14 21:24:01 +0100277 hdr.source.pan_id = priv->pan_id;
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000278
279 spin_unlock_bh(&priv->mib_lock);
Phoebe Buckheistere6278d92014-03-14 21:24:01 +0100280 } else {
281 hdr.source = *(const struct ieee802154_addr *)saddr;
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000282 }
283
Phoebe Buckheistere6278d92014-03-14 21:24:01 +0100284 hdr.dest = *(const struct ieee802154_addr *)daddr;
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000285
Phoebe Buckheistere6278d92014-03-14 21:24:01 +0100286 hlen = ieee802154_hdr_push(skb, &hdr);
287 if (hlen < 0)
288 return -EINVAL;
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000289
Alexander Aring3e691622013-10-30 09:18:22 +0100290 skb_reset_mac_header(skb);
Phoebe Buckheistere6278d92014-03-14 21:24:01 +0100291 skb->mac_len = hlen;
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000292
Phoebe Buckheister8c842962014-05-14 17:43:07 +0200293 if (len > ieee802154_max_payload(&hdr))
Phoebe Buckheisterd1d73582014-03-14 21:24:04 +0100294 return -EMSGSIZE;
295
Phoebe Buckheistere6278d92014-03-14 21:24:01 +0100296 return hlen;
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000297}
298
299static int
300mac802154_header_parse(const struct sk_buff *skb, unsigned char *haddr)
301{
Phoebe Buckheistere6278d92014-03-14 21:24:01 +0100302 struct ieee802154_hdr hdr;
303 struct ieee802154_addr *addr = (struct ieee802154_addr *)haddr;
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000304
Phoebe Buckheistere6278d92014-03-14 21:24:01 +0100305 if (ieee802154_hdr_peek_addrs(skb, &hdr) < 0) {
306 pr_debug("malformed packet\n");
307 return 0;
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000308 }
309
Phoebe Buckheistere6278d92014-03-14 21:24:01 +0100310 *addr = hdr.source;
311 return sizeof(*addr);
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000312}
313
314static netdev_tx_t
315mac802154_wpan_xmit(struct sk_buff *skb, struct net_device *dev)
316{
317 struct mac802154_sub_if_data *priv;
318 u8 chan, page;
Phoebe Buckheisterf30be4d2014-05-16 17:46:40 +0200319 int rc;
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000320
321 priv = netdev_priv(dev);
322
323 spin_lock_bh(&priv->mib_lock);
324 chan = priv->chan;
325 page = priv->page;
326 spin_unlock_bh(&priv->mib_lock);
327
328 if (chan == MAC802154_CHAN_NONE ||
329 page >= WPAN_NUM_PAGES ||
Alan Ottfcefbe92012-11-29 18:25:10 +0000330 chan >= WPAN_NUM_CHANNELS) {
331 kfree_skb(skb);
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000332 return NETDEV_TX_OK;
Alan Ottfcefbe92012-11-29 18:25:10 +0000333 }
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000334
Phoebe Buckheisterf30be4d2014-05-16 17:46:40 +0200335 rc = mac802154_llsec_encrypt(&priv->sec, skb);
336 if (rc) {
337 pr_warn("encryption failed: %i\n", rc);
338 kfree_skb(skb);
339 return NETDEV_TX_OK;
340 }
341
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000342 skb->skb_iif = dev->ifindex;
343 dev->stats.tx_packets++;
344 dev->stats.tx_bytes += skb->len;
345
346 return mac802154_tx(priv->hw, skb, page, chan);
347}
348
349static struct header_ops mac802154_header_ops = {
350 .create = mac802154_header_create,
351 .parse = mac802154_header_parse,
352};
353
354static const struct net_device_ops mac802154_wpan_ops = {
Phoebe Buckheistere462ded2014-03-31 21:37:46 +0200355 .ndo_open = mac802154_wpan_open,
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000356 .ndo_stop = mac802154_slave_close,
357 .ndo_start_xmit = mac802154_wpan_xmit,
358 .ndo_do_ioctl = mac802154_wpan_ioctl,
359 .ndo_set_mac_address = mac802154_wpan_mac_addr,
360};
361
Phoebe Buckheisterf30be4d2014-05-16 17:46:40 +0200362static void mac802154_wpan_free(struct net_device *dev)
363{
364 struct mac802154_sub_if_data *priv = netdev_priv(dev);
365
366 mac802154_llsec_destroy(&priv->sec);
367
368 free_netdev(dev);
369}
370
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000371void mac802154_wpan_setup(struct net_device *dev)
372{
373 struct mac802154_sub_if_data *priv;
374
375 dev->addr_len = IEEE802154_ADDR_LEN;
376 memset(dev->broadcast, 0xff, IEEE802154_ADDR_LEN);
377
378 dev->hard_header_len = MAC802154_FRAME_HARD_HEADER_LEN;
379 dev->header_ops = &mac802154_header_ops;
Phoebe Buckheisterf30be4d2014-05-16 17:46:40 +0200380 dev->needed_tailroom = 2 + 16; /* FCS + MIC */
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000381 dev->mtu = IEEE802154_MTU;
Alan Otte937f5832013-04-03 04:00:57 +0000382 dev->tx_queue_len = 300;
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000383 dev->type = ARPHRD_IEEE802154;
384 dev->flags = IFF_NOARP | IFF_BROADCAST;
385 dev->watchdog_timeo = 0;
386
Phoebe Buckheisterf30be4d2014-05-16 17:46:40 +0200387 dev->destructor = mac802154_wpan_free;
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000388 dev->netdev_ops = &mac802154_wpan_ops;
389 dev->ml_priv = &mac802154_mlme_wpan;
390
391 priv = netdev_priv(dev);
392 priv->type = IEEE802154_DEV_WPAN;
393
394 priv->chan = MAC802154_CHAN_NONE;
395 priv->page = 0;
396
397 spin_lock_init(&priv->mib_lock);
Phoebe Buckheisterf30be4d2014-05-16 17:46:40 +0200398 mutex_init(&priv->sec_mtx);
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000399
400 get_random_bytes(&priv->bsn, 1);
401 get_random_bytes(&priv->dsn, 1);
402
Phoebe Buckheistere462ded2014-03-31 21:37:46 +0200403 /* defaults per 802.15.4-2011 */
404 priv->mac_params.min_be = 3;
405 priv->mac_params.max_be = 5;
406 priv->mac_params.csma_retries = 4;
407 priv->mac_params.frame_retries = -1; /* for compatibility, actual default is 3 */
408
Phoebe Buckheisterb70ab2e2014-03-14 21:23:59 +0100409 priv->pan_id = cpu_to_le16(IEEE802154_PANID_BROADCAST);
410 priv->short_addr = cpu_to_le16(IEEE802154_ADDR_BROADCAST);
Phoebe Buckheisterf30be4d2014-05-16 17:46:40 +0200411
412 mac802154_llsec_init(&priv->sec);
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000413}
414
415static int mac802154_process_data(struct net_device *dev, struct sk_buff *skb)
416{
Alexander Aring5ff3fec2013-01-02 01:01:10 +0000417 return netif_rx_ni(skb);
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000418}
419
420static int
Phoebe Buckheisterf30be4d2014-05-16 17:46:40 +0200421mac802154_subif_frame(struct mac802154_sub_if_data *sdata, struct sk_buff *skb,
422 const struct ieee802154_hdr *hdr)
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000423{
Phoebe Buckheisterae531b92014-03-14 21:24:02 +0100424 __le16 span, sshort;
Phoebe Buckheisterf30be4d2014-05-16 17:46:40 +0200425 int rc;
Phoebe Buckheisterb70ab2e2014-03-14 21:23:59 +0100426
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000427 pr_debug("getting packet via slave interface %s\n", sdata->dev->name);
428
429 spin_lock_bh(&sdata->mib_lock);
430
Phoebe Buckheisterae531b92014-03-14 21:24:02 +0100431 span = sdata->pan_id;
432 sshort = sdata->short_addr;
Phoebe Buckheisterb70ab2e2014-03-14 21:23:59 +0100433
Phoebe Buckheisterae531b92014-03-14 21:24:02 +0100434 switch (mac_cb(skb)->dest.mode) {
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000435 case IEEE802154_ADDR_NONE:
Phoebe Buckheisterae531b92014-03-14 21:24:02 +0100436 if (mac_cb(skb)->dest.mode != IEEE802154_ADDR_NONE)
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000437 /* FIXME: check if we are PAN coordinator */
438 skb->pkt_type = PACKET_OTHERHOST;
439 else
440 /* ACK comes with both addresses empty */
441 skb->pkt_type = PACKET_HOST;
442 break;
443 case IEEE802154_ADDR_LONG:
Phoebe Buckheisterae531b92014-03-14 21:24:02 +0100444 if (mac_cb(skb)->dest.pan_id != span &&
445 mac_cb(skb)->dest.pan_id != cpu_to_le16(IEEE802154_PANID_BROADCAST))
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000446 skb->pkt_type = PACKET_OTHERHOST;
Phoebe Buckheisterae531b92014-03-14 21:24:02 +0100447 else if (mac_cb(skb)->dest.extended_addr == sdata->extended_addr)
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000448 skb->pkt_type = PACKET_HOST;
449 else
450 skb->pkt_type = PACKET_OTHERHOST;
451 break;
452 case IEEE802154_ADDR_SHORT:
Phoebe Buckheisterae531b92014-03-14 21:24:02 +0100453 if (mac_cb(skb)->dest.pan_id != span &&
454 mac_cb(skb)->dest.pan_id != cpu_to_le16(IEEE802154_PANID_BROADCAST))
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000455 skb->pkt_type = PACKET_OTHERHOST;
Phoebe Buckheisterae531b92014-03-14 21:24:02 +0100456 else if (mac_cb(skb)->dest.short_addr == sshort)
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000457 skb->pkt_type = PACKET_HOST;
Phoebe Buckheisterae531b92014-03-14 21:24:02 +0100458 else if (mac_cb(skb)->dest.short_addr ==
459 cpu_to_le16(IEEE802154_ADDR_BROADCAST))
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000460 skb->pkt_type = PACKET_BROADCAST;
461 else
462 skb->pkt_type = PACKET_OTHERHOST;
463 break;
464 default:
Martin Townsend6e361d62014-08-19 19:03:30 +0200465 spin_unlock_bh(&sdata->mib_lock);
466 pr_debug("invalid dest mode\n");
467 kfree_skb(skb);
468 return NET_RX_DROP;
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000469 }
470
471 spin_unlock_bh(&sdata->mib_lock);
472
473 skb->dev = sdata->dev;
474
Phoebe Buckheisterf30be4d2014-05-16 17:46:40 +0200475 rc = mac802154_llsec_decrypt(&sdata->sec, skb);
476 if (rc) {
477 pr_debug("decryption failed: %i\n", rc);
Phoebe Buckheistera374eeb2014-06-11 12:03:06 +0200478 kfree_skb(skb);
Phoebe Buckheisterf30be4d2014-05-16 17:46:40 +0200479 return NET_RX_DROP;
480 }
481
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000482 sdata->dev->stats.rx_packets++;
483 sdata->dev->stats.rx_bytes += skb->len;
484
Phoebe Buckheister32edc402014-05-14 17:43:08 +0200485 switch (mac_cb(skb)->type) {
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000486 case IEEE802154_FC_TYPE_DATA:
487 return mac802154_process_data(sdata->dev, skb);
488 default:
Weilong Chen2cc33c72013-12-19 09:22:26 +0800489 pr_warn("ieee802154: bad frame received (type = %d)\n",
Phoebe Buckheister32edc402014-05-14 17:43:08 +0200490 mac_cb(skb)->type);
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000491 kfree_skb(skb);
492 return NET_RX_DROP;
493 }
494}
495
Phoebe Buckheistere6278d92014-03-14 21:24:01 +0100496static void mac802154_print_addr(const char *name,
497 const struct ieee802154_addr *addr)
498{
499 if (addr->mode == IEEE802154_ADDR_NONE)
500 pr_debug("%s not present\n", name);
501
502 pr_debug("%s PAN ID: %04x\n", name, le16_to_cpu(addr->pan_id));
503 if (addr->mode == IEEE802154_ADDR_SHORT) {
504 pr_debug("%s is short: %04x\n", name,
505 le16_to_cpu(addr->short_addr));
506 } else {
507 u64 hw = swab64((__force u64) addr->extended_addr);
508
509 pr_debug("%s is hardware: %8phC\n", name, &hw);
510 }
511}
512
Phoebe Buckheisterf30be4d2014-05-16 17:46:40 +0200513static int mac802154_parse_frame_start(struct sk_buff *skb,
514 struct ieee802154_hdr *hdr)
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000515{
Phoebe Buckheistere6278d92014-03-14 21:24:01 +0100516 int hlen;
Phoebe Buckheister32edc402014-05-14 17:43:08 +0200517 struct ieee802154_mac_cb *cb = mac_cb_init(skb);
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000518
Phoebe Buckheisterf30be4d2014-05-16 17:46:40 +0200519 hlen = ieee802154_hdr_pull(skb, hdr);
Phoebe Buckheistere6278d92014-03-14 21:24:01 +0100520 if (hlen < 0)
521 return -EINVAL;
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000522
Phoebe Buckheistere6278d92014-03-14 21:24:01 +0100523 skb->mac_len = hlen;
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000524
Phoebe Buckheisterf30be4d2014-05-16 17:46:40 +0200525 pr_debug("fc: %04x dsn: %02x\n", le16_to_cpup((__le16 *)&hdr->fc),
526 hdr->seq);
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000527
Phoebe Buckheisterf30be4d2014-05-16 17:46:40 +0200528 cb->type = hdr->fc.type;
529 cb->ackreq = hdr->fc.ack_request;
530 cb->secen = hdr->fc.security_enabled;
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000531
Phoebe Buckheisterf30be4d2014-05-16 17:46:40 +0200532 mac802154_print_addr("destination", &hdr->dest);
533 mac802154_print_addr("source", &hdr->source);
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000534
Phoebe Buckheisterf30be4d2014-05-16 17:46:40 +0200535 cb->source = hdr->source;
536 cb->dest = hdr->dest;
Phoebe Buckheisterae531b92014-03-14 21:24:02 +0100537
Phoebe Buckheisterf30be4d2014-05-16 17:46:40 +0200538 if (hdr->fc.security_enabled) {
Phoebe Buckheistere6278d92014-03-14 21:24:01 +0100539 u64 key;
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000540
Phoebe Buckheisterf30be4d2014-05-16 17:46:40 +0200541 pr_debug("seclevel %i\n", hdr->sec.level);
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000542
Phoebe Buckheisterf30be4d2014-05-16 17:46:40 +0200543 switch (hdr->sec.key_id_mode) {
Phoebe Buckheistere6278d92014-03-14 21:24:01 +0100544 case IEEE802154_SCF_KEY_IMPLICIT:
545 pr_debug("implicit key\n");
546 break;
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000547
Phoebe Buckheistere6278d92014-03-14 21:24:01 +0100548 case IEEE802154_SCF_KEY_INDEX:
Phoebe Buckheisterf30be4d2014-05-16 17:46:40 +0200549 pr_debug("key %02x\n", hdr->sec.key_id);
Phoebe Buckheistere6278d92014-03-14 21:24:01 +0100550 break;
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000551
Phoebe Buckheistere6278d92014-03-14 21:24:01 +0100552 case IEEE802154_SCF_KEY_SHORT_INDEX:
553 pr_debug("key %04x:%04x %02x\n",
Phoebe Buckheisterf30be4d2014-05-16 17:46:40 +0200554 le32_to_cpu(hdr->sec.short_src) >> 16,
555 le32_to_cpu(hdr->sec.short_src) & 0xffff,
556 hdr->sec.key_id);
Phoebe Buckheistere6278d92014-03-14 21:24:01 +0100557 break;
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000558
Phoebe Buckheistere6278d92014-03-14 21:24:01 +0100559 case IEEE802154_SCF_KEY_HW_INDEX:
Phoebe Buckheisterf30be4d2014-05-16 17:46:40 +0200560 key = swab64((__force u64) hdr->sec.extended_src);
Phoebe Buckheistere6278d92014-03-14 21:24:01 +0100561 pr_debug("key source %8phC %02x\n", &key,
Phoebe Buckheisterf30be4d2014-05-16 17:46:40 +0200562 hdr->sec.key_id);
Phoebe Buckheistere6278d92014-03-14 21:24:01 +0100563 break;
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000564 }
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000565 }
566
567 return 0;
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000568}
569
570void mac802154_wpans_rx(struct mac802154_priv *priv, struct sk_buff *skb)
571{
572 int ret;
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000573 struct mac802154_sub_if_data *sdata;
Phoebe Buckheisterf30be4d2014-05-16 17:46:40 +0200574 struct ieee802154_hdr hdr;
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000575
Phoebe Buckheisterf30be4d2014-05-16 17:46:40 +0200576 ret = mac802154_parse_frame_start(skb, &hdr);
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000577 if (ret) {
578 pr_debug("got invalid frame\n");
Martin Townsend7629d1e2014-08-19 19:03:28 +0200579 kfree_skb(skb);
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000580 return;
581 }
582
583 rcu_read_lock();
584 list_for_each_entry_rcu(sdata, &priv->slaves, list) {
Phoebe Buckheister2d3b5b02014-06-11 12:03:07 +0200585 if (sdata->type != IEEE802154_DEV_WPAN ||
586 !netif_running(sdata->dev))
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000587 continue;
588
Phoebe Buckheister2d3b5b02014-06-11 12:03:07 +0200589 mac802154_subif_frame(sdata, skb, &hdr);
590 skb = NULL;
591 break;
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000592 }
593 rcu_read_unlock();
Phoebe Buckheister2d3b5b02014-06-11 12:03:07 +0200594
595 if (skb)
596 kfree_skb(skb);
alex.bluesman.smirnov@gmail.com32bad7e2012-06-25 23:24:48 +0000597}