2 * Sample driver for HardMAC IEEE 802.15.4 devices
4 * Copyright (C) 2009 Siemens AG
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20 * Dmitry Eremin-Solenikov <dmitry.baryshkov@siemens.com>
22 #include <linux/kernel.h>
23 #include <linux/module.h>
24 #include <linux/platform_device.h>
25 #include <linux/netdevice.h>
26 #include <linux/skbuff.h>
27 #include <linux/if_arp.h>
29 #include <net/ieee802154/af_ieee802154.h>
30 #include <net/ieee802154/netdevice.h>
31 #include <net/ieee802154/mac_def.h>
32 #include <net/ieee802154/nl802154.h>
34 static u16 fake_get_pan_id(struct net_device *dev)
36 BUG_ON(dev->type != ARPHRD_IEEE802154);
41 static u16 fake_get_short_addr(struct net_device *dev)
43 BUG_ON(dev->type != ARPHRD_IEEE802154);
48 static u8 fake_get_dsn(struct net_device *dev)
50 BUG_ON(dev->type != ARPHRD_IEEE802154);
52 return 0x00; /* DSN are implemented in HW, so return just 0 */
55 static u8 fake_get_bsn(struct net_device *dev)
57 BUG_ON(dev->type != ARPHRD_IEEE802154);
59 return 0x00; /* BSN are implemented in HW, so return just 0 */
62 static int fake_assoc_req(struct net_device *dev,
63 struct ieee802154_addr *addr, u8 channel, u8 cap)
65 /* We simply emulate it here */
66 return ieee802154_nl_assoc_confirm(dev, fake_get_short_addr(dev),
70 static int fake_assoc_resp(struct net_device *dev,
71 struct ieee802154_addr *addr, u16 short_addr, u8 status)
76 static int fake_disassoc_req(struct net_device *dev,
77 struct ieee802154_addr *addr, u8 reason)
79 return ieee802154_nl_disassoc_confirm(dev, IEEE802154_SUCCESS);
82 static int fake_start_req(struct net_device *dev, struct ieee802154_addr *addr,
84 u8 bcn_ord, u8 sf_ord, u8 pan_coord, u8 blx,
90 static int fake_scan_req(struct net_device *dev, u8 type, u32 channels,
94 return ieee802154_nl_scan_confirm(dev, IEEE802154_SUCCESS, type,
96 type == IEEE802154_MAC_SCAN_ED ? edl : NULL);
99 static struct ieee802154_mlme_ops fake_mlme = {
100 .assoc_req = fake_assoc_req,
101 .assoc_resp = fake_assoc_resp,
102 .disassoc_req = fake_disassoc_req,
103 .start_req = fake_start_req,
104 .scan_req = fake_scan_req,
106 .get_pan_id = fake_get_pan_id,
107 .get_short_addr = fake_get_short_addr,
108 .get_dsn = fake_get_dsn,
109 .get_bsn = fake_get_bsn,
112 static int ieee802154_fake_open(struct net_device *dev)
114 netif_start_queue(dev);
118 static int ieee802154_fake_close(struct net_device *dev)
120 netif_stop_queue(dev);
124 static int ieee802154_fake_xmit(struct sk_buff *skb, struct net_device *dev)
126 skb->iif = dev->ifindex;
128 dev->stats.tx_packets++;
129 dev->stats.tx_bytes += skb->len;
131 dev->trans_start = jiffies;
133 /* FIXME: do hardware work here ... */
139 static int ieee802154_fake_ioctl(struct net_device *dev, struct ifreq *ifr,
142 struct sockaddr_ieee802154 *sa =
143 (struct sockaddr_ieee802154 *)&ifr->ifr_addr;
144 u16 pan_id, short_addr;
148 /* FIXME: fixed here, get from device IRL */
149 pan_id = fake_get_pan_id(dev);
150 short_addr = fake_get_short_addr(dev);
151 if (pan_id == IEEE802154_PANID_BROADCAST ||
152 short_addr == IEEE802154_ADDR_BROADCAST)
153 return -EADDRNOTAVAIL;
155 sa->family = AF_IEEE802154;
156 sa->addr.addr_type = IEEE802154_ADDR_SHORT;
157 sa->addr.pan_id = pan_id;
158 sa->addr.short_addr = short_addr;
164 static int ieee802154_fake_mac_addr(struct net_device *dev, void *p)
166 return -EBUSY; /* HW address is built into the device */
169 static const struct net_device_ops fake_ops = {
170 .ndo_open = ieee802154_fake_open,
171 .ndo_stop = ieee802154_fake_close,
172 .ndo_start_xmit = ieee802154_fake_xmit,
173 .ndo_do_ioctl = ieee802154_fake_ioctl,
174 .ndo_set_mac_address = ieee802154_fake_mac_addr,
178 static void ieee802154_fake_setup(struct net_device *dev)
180 dev->addr_len = IEEE802154_ADDR_LEN;
181 memset(dev->broadcast, 0xff, IEEE802154_ADDR_LEN);
182 dev->features = NETIF_F_NO_CSUM;
183 dev->needed_tailroom = 2; /* FCS */
185 dev->tx_queue_len = 10;
186 dev->type = ARPHRD_IEEE802154;
187 dev->flags = IFF_NOARP | IFF_BROADCAST;
188 dev->watchdog_timeo = 0;
192 static int __devinit ieee802154fake_probe(struct platform_device *pdev)
194 struct net_device *dev =
195 alloc_netdev(0, "hardwpan%d", ieee802154_fake_setup);
201 memcpy(dev->dev_addr, "\xba\xbe\xca\xfe\xde\xad\xbe\xef",
203 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
205 dev->netdev_ops = &fake_ops;
206 dev->ml_priv = &fake_mlme;
209 * If the name is a format string the caller wants us to do a
212 if (strchr(dev->name, '%')) {
213 err = dev_alloc_name(dev, dev->name);
218 SET_NETDEV_DEV(dev, &pdev->dev);
220 platform_set_drvdata(pdev, dev);
222 err = register_netdev(dev);
227 dev_info(&pdev->dev, "Added ieee802154 HardMAC hardware\n");
231 unregister_netdev(dev);
235 static int __devexit ieee802154fake_remove(struct platform_device *pdev)
237 struct net_device *dev = platform_get_drvdata(pdev);
238 unregister_netdev(dev);
243 static struct platform_device *ieee802154fake_dev;
245 static struct platform_driver ieee802154fake_driver = {
246 .probe = ieee802154fake_probe,
247 .remove = __devexit_p(ieee802154fake_remove),
249 .name = "ieee802154hardmac",
250 .owner = THIS_MODULE,
254 static __init int fake_init(void)
256 ieee802154fake_dev = platform_device_register_simple(
257 "ieee802154hardmac", -1, NULL, 0);
258 return platform_driver_register(&ieee802154fake_driver);
261 static __exit void fake_exit(void)
263 platform_driver_unregister(&ieee802154fake_driver);
264 platform_device_unregister(ieee802154fake_dev);
267 module_init(fake_init);
268 module_exit(fake_exit);
269 MODULE_LICENSE("GPL");