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24#include <linux/net.h>
25#include <linux/capability.h>
26#include <linux/module.h>
27#include <linux/if_arp.h>
28#include <linux/if.h>
29#include <linux/termios.h>
30#include <linux/list.h>
31#include <net/datalink.h>
32#include <net/psnap.h>
33#include <net/sock.h>
34#include <net/tcp_states.h>
35#include <net/route.h>
36
37#include <net/af_ieee802154.h>
38#include <net/ieee802154_netdev.h>
39
40#include "af802154.h"
41
42
43
44
45struct net_device *ieee802154_get_dev(struct net *net,
46 struct ieee802154_addr *addr)
47{
48 struct net_device *dev = NULL;
49 struct net_device *tmp;
50 u16 pan_id, short_addr;
51
52 switch (addr->addr_type) {
53 case IEEE802154_ADDR_LONG:
54 rtnl_lock();
55 dev = dev_getbyhwaddr(net, ARPHRD_IEEE802154, addr->hwaddr);
56 if (dev)
57 dev_hold(dev);
58 rtnl_unlock();
59 break;
60 case IEEE802154_ADDR_SHORT:
61 if (addr->pan_id == 0xffff ||
62 addr->short_addr == IEEE802154_ADDR_UNDEF ||
63 addr->short_addr == 0xffff)
64 break;
65
66 rtnl_lock();
67
68 for_each_netdev(net, tmp) {
69 if (tmp->type != ARPHRD_IEEE802154)
70 continue;
71
72 pan_id = ieee802154_mlme_ops(tmp)->get_pan_id(tmp);
73 short_addr =
74 ieee802154_mlme_ops(tmp)->get_short_addr(tmp);
75
76 if (pan_id == addr->pan_id &&
77 short_addr == addr->short_addr) {
78 dev = tmp;
79 dev_hold(dev);
80 break;
81 }
82 }
83
84 rtnl_unlock();
85 break;
86 default:
87 pr_warning("Unsupported ieee802154 address type: %d\n",
88 addr->addr_type);
89 break;
90 }
91
92 return dev;
93}
94
95static int ieee802154_sock_release(struct socket *sock)
96{
97 struct sock *sk = sock->sk;
98
99 if (sk) {
100 sock->sk = NULL;
101 sk->sk_prot->close(sk, 0);
102 }
103 return 0;
104}
105static int ieee802154_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
106 struct msghdr *msg, size_t len)
107{
108 struct sock *sk = sock->sk;
109
110 return sk->sk_prot->sendmsg(iocb, sk, msg, len);
111}
112
113static int ieee802154_sock_bind(struct socket *sock, struct sockaddr *uaddr,
114 int addr_len)
115{
116 struct sock *sk = sock->sk;
117
118 if (sk->sk_prot->bind)
119 return sk->sk_prot->bind(sk, uaddr, addr_len);
120
121 return sock_no_bind(sock, uaddr, addr_len);
122}
123
124static int ieee802154_sock_connect(struct socket *sock, struct sockaddr *uaddr,
125 int addr_len, int flags)
126{
127 struct sock *sk = sock->sk;
128
129 if (uaddr->sa_family == AF_UNSPEC)
130 return sk->sk_prot->disconnect(sk, flags);
131
132 return sk->sk_prot->connect(sk, uaddr, addr_len);
133}
134
135static int ieee802154_dev_ioctl(struct sock *sk, struct ifreq __user *arg,
136 unsigned int cmd)
137{
138 struct ifreq ifr;
139 int ret = -ENOIOCTLCMD;
140 struct net_device *dev;
141
142 if (copy_from_user(&ifr, arg, sizeof(struct ifreq)))
143 return -EFAULT;
144
145 ifr.ifr_name[IFNAMSIZ-1] = 0;
146
147 dev_load(sock_net(sk), ifr.ifr_name);
148 dev = dev_get_by_name(sock_net(sk), ifr.ifr_name);
149
150 if (dev->type == ARPHRD_IEEE802154 && dev->netdev_ops->ndo_do_ioctl)
151 ret = dev->netdev_ops->ndo_do_ioctl(dev, &ifr, cmd);
152
153 if (!ret && copy_to_user(arg, &ifr, sizeof(struct ifreq)))
154 ret = -EFAULT;
155 dev_put(dev);
156
157 return ret;
158}
159
160static int ieee802154_sock_ioctl(struct socket *sock, unsigned int cmd,
161 unsigned long arg)
162{
163 struct sock *sk = sock->sk;
164
165 switch (cmd) {
166 case SIOCGSTAMP:
167 return sock_get_timestamp(sk, (struct timeval __user *)arg);
168 case SIOCGSTAMPNS:
169 return sock_get_timestampns(sk, (struct timespec __user *)arg);
170 case SIOCGIFADDR:
171 case SIOCSIFADDR:
172 return ieee802154_dev_ioctl(sk, (struct ifreq __user *)arg,
173 cmd);
174 default:
175 if (!sk->sk_prot->ioctl)
176 return -ENOIOCTLCMD;
177 return sk->sk_prot->ioctl(sk, cmd, arg);
178 }
179}
180
181static const struct proto_ops ieee802154_raw_ops = {
182 .family = PF_IEEE802154,
183 .owner = THIS_MODULE,
184 .release = ieee802154_sock_release,
185 .bind = ieee802154_sock_bind,
186 .connect = ieee802154_sock_connect,
187 .socketpair = sock_no_socketpair,
188 .accept = sock_no_accept,
189 .getname = sock_no_getname,
190 .poll = datagram_poll,
191 .ioctl = ieee802154_sock_ioctl,
192 .listen = sock_no_listen,
193 .shutdown = sock_no_shutdown,
194 .setsockopt = sock_common_setsockopt,
195 .getsockopt = sock_common_getsockopt,
196 .sendmsg = ieee802154_sock_sendmsg,
197 .recvmsg = sock_common_recvmsg,
198 .mmap = sock_no_mmap,
199 .sendpage = sock_no_sendpage,
200#ifdef CONFIG_COMPAT
201 .compat_setsockopt = compat_sock_common_setsockopt,
202 .compat_getsockopt = compat_sock_common_getsockopt,
203#endif
204};
205
206static const struct proto_ops ieee802154_dgram_ops = {
207 .family = PF_IEEE802154,
208 .owner = THIS_MODULE,
209 .release = ieee802154_sock_release,
210 .bind = ieee802154_sock_bind,
211 .connect = ieee802154_sock_connect,
212 .socketpair = sock_no_socketpair,
213 .accept = sock_no_accept,
214 .getname = sock_no_getname,
215 .poll = datagram_poll,
216 .ioctl = ieee802154_sock_ioctl,
217 .listen = sock_no_listen,
218 .shutdown = sock_no_shutdown,
219 .setsockopt = sock_common_setsockopt,
220 .getsockopt = sock_common_getsockopt,
221 .sendmsg = ieee802154_sock_sendmsg,
222 .recvmsg = sock_common_recvmsg,
223 .mmap = sock_no_mmap,
224 .sendpage = sock_no_sendpage,
225#ifdef CONFIG_COMPAT
226 .compat_setsockopt = compat_sock_common_setsockopt,
227 .compat_getsockopt = compat_sock_common_getsockopt,
228#endif
229};
230
231
232
233
234
235
236static int ieee802154_create(struct net *net, struct socket *sock,
237 int protocol)
238{
239 struct sock *sk;
240 int rc;
241 struct proto *proto;
242 const struct proto_ops *ops;
243
244 if (net != &init_net)
245 return -EAFNOSUPPORT;
246
247 switch (sock->type) {
248 case SOCK_RAW:
249 proto = &ieee802154_raw_prot;
250 ops = &ieee802154_raw_ops;
251 break;
252 case SOCK_DGRAM:
253 proto = &ieee802154_dgram_prot;
254 ops = &ieee802154_dgram_ops;
255 break;
256 default:
257 rc = -ESOCKTNOSUPPORT;
258 goto out;
259 }
260
261 rc = -ENOMEM;
262 sk = sk_alloc(net, PF_IEEE802154, GFP_KERNEL, proto);
263 if (!sk)
264 goto out;
265 rc = 0;
266
267 sock->ops = ops;
268
269 sock_init_data(sock, sk);
270
271 sk->sk_family = PF_IEEE802154;
272
273
274 sock_set_flag(sk, SOCK_ZAPPED);
275
276 if (sk->sk_prot->hash)
277 sk->sk_prot->hash(sk);
278
279 if (sk->sk_prot->init) {
280 rc = sk->sk_prot->init(sk);
281 if (rc)
282 sk_common_release(sk);
283 }
284out:
285 return rc;
286}
287
288static struct net_proto_family ieee802154_family_ops = {
289 .family = PF_IEEE802154,
290 .create = ieee802154_create,
291 .owner = THIS_MODULE,
292};
293
294static int ieee802154_rcv(struct sk_buff *skb, struct net_device *dev,
295 struct packet_type *pt, struct net_device *orig_dev)
296{
297 if (!netif_running(dev))
298 return -ENODEV;
299 pr_debug("got frame, type %d, dev %p\n", dev->type, dev);
300#ifdef DEBUG
301 print_hex_dump_bytes("ieee802154_rcv ", DUMP_PREFIX_NONE, skb->data, skb->len);
302#endif
303
304 if (!net_eq(dev_net(dev), &init_net))
305 goto drop;
306
307 ieee802154_raw_deliver(dev, skb);
308
309 if (dev->type != ARPHRD_IEEE802154)
310 goto drop;
311
312 if (skb->pkt_type != PACKET_OTHERHOST)
313 return ieee802154_dgram_deliver(dev, skb);
314
315drop:
316 kfree_skb(skb);
317 return NET_RX_DROP;
318}
319
320
321static struct packet_type ieee802154_packet_type = {
322 .type = __constant_htons(ETH_P_IEEE802154),
323 .func = ieee802154_rcv,
324};
325
326static int __init af_ieee802154_init(void)
327{
328 int rc = -EINVAL;
329
330 rc = proto_register(&ieee802154_raw_prot, 1);
331 if (rc)
332 goto out;
333
334 rc = proto_register(&ieee802154_dgram_prot, 1);
335 if (rc)
336 goto err_dgram;
337
338
339 rc = sock_register(&ieee802154_family_ops);
340 if (rc)
341 goto err_sock;
342 dev_add_pack(&ieee802154_packet_type);
343
344 rc = 0;
345 goto out;
346
347err_sock:
348 proto_unregister(&ieee802154_dgram_prot);
349err_dgram:
350 proto_unregister(&ieee802154_raw_prot);
351out:
352 return rc;
353}
354static void __exit af_ieee802154_remove(void)
355{
356 dev_remove_pack(&ieee802154_packet_type);
357 sock_unregister(PF_IEEE802154);
358 proto_unregister(&ieee802154_dgram_prot);
359 proto_unregister(&ieee802154_raw_prot);
360}
361
362module_init(af_ieee802154_init);
363module_exit(af_ieee802154_remove);
364
365MODULE_LICENSE("GPL");
366MODULE_ALIAS_NETPROTO(PF_IEEE802154);
367
