2 * IEEE802154.4 socket interface
4 * Copyright 2007, 2008 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 * Sergey Lapin <slapin@ossfans.org>
21 * Maxim Gorbachyov <maxim.gorbachev@siemens.com>
24 #include <linux/net.h>
25 #include <linux/capability.h>
26 #include <linux/module.h>
27 #include <linux/if_arp.h>
29 #include <linux/termios.h> /* For TIOCOUTQ/INQ */
30 #include <linux/list.h>
31 #include <net/datalink.h>
32 #include <net/psnap.h>
34 #include <net/tcp_states.h>
35 #include <net/route.h>
37 #include <net/ieee802154/af_ieee802154.h>
38 #include <net/ieee802154/netdevice.h>
43 * Utility function for families
45 struct net_device *ieee802154_get_dev(struct net *net,
46 struct ieee802154_addr *addr)
48 struct net_device *dev = NULL;
49 struct net_device *tmp;
50 u16 pan_id, short_addr;
52 switch (addr->addr_type) {
53 case IEEE802154_ADDR_LONG:
55 dev = dev_getbyhwaddr(net, ARPHRD_IEEE802154, addr->hwaddr);
60 case IEEE802154_ADDR_SHORT:
61 if (addr->pan_id == 0xffff ||
62 addr->short_addr == IEEE802154_ADDR_UNDEF ||
63 addr->short_addr == 0xffff)
68 for_each_netdev(net, tmp) {
69 if (tmp->type != ARPHRD_IEEE802154)
72 pan_id = ieee802154_mlme_ops(tmp)->get_pan_id(tmp);
74 ieee802154_mlme_ops(tmp)->get_short_addr(tmp);
76 if (pan_id == addr->pan_id &&
77 short_addr == addr->short_addr) {
87 pr_warning("Unsupported ieee802154 address type: %d\n",
95 static int ieee802154_sock_release(struct socket *sock)
97 struct sock *sk = sock->sk;
101 sk->sk_prot->close(sk, 0);
105 static int ieee802154_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
106 struct msghdr *msg, size_t len)
108 struct sock *sk = sock->sk;
110 return sk->sk_prot->sendmsg(iocb, sk, msg, len);
113 static int ieee802154_sock_bind(struct socket *sock, struct sockaddr *uaddr,
116 struct sock *sk = sock->sk;
118 if (sk->sk_prot->bind)
119 return sk->sk_prot->bind(sk, uaddr, addr_len);
121 return sock_no_bind(sock, uaddr, addr_len);
124 static int ieee802154_sock_connect(struct socket *sock, struct sockaddr *uaddr,
125 int addr_len, int flags)
127 struct sock *sk = sock->sk;
129 if (uaddr->sa_family == AF_UNSPEC)
130 return sk->sk_prot->disconnect(sk, flags);
132 return sk->sk_prot->connect(sk, uaddr, addr_len);
135 static int ieee802154_dev_ioctl(struct sock *sk, struct ifreq __user *arg,
139 int ret = -ENOIOCTLCMD;
140 struct net_device *dev;
142 if (copy_from_user(&ifr, arg, sizeof(struct ifreq)))
145 ifr.ifr_name[IFNAMSIZ-1] = 0;
147 dev_load(sock_net(sk), ifr.ifr_name);
148 dev = dev_get_by_name(sock_net(sk), ifr.ifr_name);
150 if ((dev->type == ARPHRD_IEEE802154 ||
151 dev->type == ARPHRD_IEEE802154_PHY) &&
152 dev->netdev_ops->ndo_do_ioctl)
153 ret = dev->netdev_ops->ndo_do_ioctl(dev, &ifr, cmd);
155 if (!ret && copy_to_user(arg, &ifr, sizeof(struct ifreq)))
162 static int ieee802154_sock_ioctl(struct socket *sock, unsigned int cmd,
165 struct sock *sk = sock->sk;
169 return sock_get_timestamp(sk, (struct timeval __user *)arg);
171 return sock_get_timestampns(sk, (struct timespec __user *)arg);
174 return ieee802154_dev_ioctl(sk, (struct ifreq __user *)arg,
177 if (!sk->sk_prot->ioctl)
179 return sk->sk_prot->ioctl(sk, cmd, arg);
183 static const struct proto_ops ieee802154_raw_ops = {
184 .family = PF_IEEE802154,
185 .owner = THIS_MODULE,
186 .release = ieee802154_sock_release,
187 .bind = ieee802154_sock_bind,
188 .connect = ieee802154_sock_connect,
189 .socketpair = sock_no_socketpair,
190 .accept = sock_no_accept,
191 .getname = sock_no_getname,
192 .poll = datagram_poll,
193 .ioctl = ieee802154_sock_ioctl,
194 .listen = sock_no_listen,
195 .shutdown = sock_no_shutdown,
196 .setsockopt = sock_common_setsockopt,
197 .getsockopt = sock_common_getsockopt,
198 .sendmsg = ieee802154_sock_sendmsg,
199 .recvmsg = sock_common_recvmsg,
200 .mmap = sock_no_mmap,
201 .sendpage = sock_no_sendpage,
203 .compat_setsockopt = compat_sock_common_setsockopt,
204 .compat_getsockopt = compat_sock_common_getsockopt,
208 static const struct proto_ops ieee802154_dgram_ops = {
209 .family = PF_IEEE802154,
210 .owner = THIS_MODULE,
211 .release = ieee802154_sock_release,
212 .bind = ieee802154_sock_bind,
213 .connect = ieee802154_sock_connect,
214 .socketpair = sock_no_socketpair,
215 .accept = sock_no_accept,
216 .getname = sock_no_getname,
217 .poll = datagram_poll,
218 .ioctl = ieee802154_sock_ioctl,
219 .listen = sock_no_listen,
220 .shutdown = sock_no_shutdown,
221 .setsockopt = sock_common_setsockopt,
222 .getsockopt = sock_common_getsockopt,
223 .sendmsg = ieee802154_sock_sendmsg,
224 .recvmsg = sock_common_recvmsg,
225 .mmap = sock_no_mmap,
226 .sendpage = sock_no_sendpage,
228 .compat_setsockopt = compat_sock_common_setsockopt,
229 .compat_getsockopt = compat_sock_common_getsockopt,
235 * Create a socket. Initialise the socket, blank the addresses
238 static int ieee802154_create(struct net *net, struct socket *sock,
244 const struct proto_ops *ops;
246 if (net != &init_net)
247 return -EAFNOSUPPORT;
249 switch (sock->type) {
251 proto = &ieee802154_raw_prot;
252 ops = &ieee802154_raw_ops;
255 proto = &ieee802154_dgram_prot;
256 ops = &ieee802154_dgram_ops;
259 rc = -ESOCKTNOSUPPORT;
264 sk = sk_alloc(net, PF_IEEE802154, GFP_KERNEL, proto);
271 sock_init_data(sock, sk);
272 /* FIXME: sk->sk_destruct */
273 sk->sk_family = PF_IEEE802154;
275 /* Checksums on by default */
276 sock_set_flag(sk, SOCK_ZAPPED);
278 if (sk->sk_prot->hash)
279 sk->sk_prot->hash(sk);
281 if (sk->sk_prot->init) {
282 rc = sk->sk_prot->init(sk);
284 sk_common_release(sk);
290 static struct net_proto_family ieee802154_family_ops = {
291 .family = PF_IEEE802154,
292 .create = ieee802154_create,
293 .owner = THIS_MODULE,
296 static int ieee802154_rcv(struct sk_buff *skb, struct net_device *dev,
297 struct packet_type *pt, struct net_device *orig_dev)
299 if (!netif_running(dev))
301 pr_debug("got frame, type %d, dev %p\n", dev->type, dev);
303 print_hex_dump_bytes("ieee802154_rcv ", DUMP_PREFIX_NONE, skb->data, skb->len);
306 if (!net_eq(dev_net(dev), &init_net))
309 ieee802154_raw_deliver(dev, skb);
311 if (dev->type != ARPHRD_IEEE802154)
314 if (skb->pkt_type != PACKET_OTHERHOST)
315 return ieee802154_dgram_deliver(dev, skb);
323 static struct packet_type ieee802154_packet_type = {
324 .type = __constant_htons(ETH_P_IEEE802154),
325 .func = ieee802154_rcv,
328 static int __init af_ieee802154_init(void)
332 rc = proto_register(&ieee802154_raw_prot, 1);
336 rc = proto_register(&ieee802154_dgram_prot, 1);
340 /* Tell SOCKET that we are alive */
341 rc = sock_register(&ieee802154_family_ops);
344 dev_add_pack(&ieee802154_packet_type);
350 proto_unregister(&ieee802154_dgram_prot);
352 proto_unregister(&ieee802154_raw_prot);
356 static void __exit af_ieee802154_remove(void)
358 dev_remove_pack(&ieee802154_packet_type);
359 sock_unregister(PF_IEEE802154);
360 proto_unregister(&ieee802154_dgram_prot);
361 proto_unregister(&ieee802154_raw_prot);
364 module_init(af_ieee802154_init);
365 module_exit(af_ieee802154_remove);
367 MODULE_LICENSE("GPL");
368 MODULE_ALIAS_NETPROTO(PF_IEEE802154);