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 <linux/slab.h>
32 #include <net/datalink.h>
33 #include <net/psnap.h>
35 #include <net/tcp_states.h>
36 #include <net/route.h>
38 #include <net/af_ieee802154.h>
39 #include <net/ieee802154_netdev.h>
44 * Utility function for families
46 struct net_device *ieee802154_get_dev(struct net *net,
47 struct ieee802154_addr *addr)
49 struct net_device *dev = NULL;
50 struct net_device *tmp;
51 u16 pan_id, short_addr;
53 switch (addr->addr_type) {
54 case IEEE802154_ADDR_LONG:
56 dev = dev_getbyhwaddr(net, ARPHRD_IEEE802154, addr->hwaddr);
61 case IEEE802154_ADDR_SHORT:
62 if (addr->pan_id == 0xffff ||
63 addr->short_addr == IEEE802154_ADDR_UNDEF ||
64 addr->short_addr == 0xffff)
69 for_each_netdev(net, tmp) {
70 if (tmp->type != ARPHRD_IEEE802154)
73 pan_id = ieee802154_mlme_ops(tmp)->get_pan_id(tmp);
75 ieee802154_mlme_ops(tmp)->get_short_addr(tmp);
77 if (pan_id == addr->pan_id &&
78 short_addr == addr->short_addr) {
88 pr_warning("Unsupported ieee802154 address type: %d\n",
96 static int ieee802154_sock_release(struct socket *sock)
98 struct sock *sk = sock->sk;
102 sk->sk_prot->close(sk, 0);
106 static int ieee802154_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
107 struct msghdr *msg, size_t len)
109 struct sock *sk = sock->sk;
111 return sk->sk_prot->sendmsg(iocb, sk, msg, len);
114 static int ieee802154_sock_bind(struct socket *sock, struct sockaddr *uaddr,
117 struct sock *sk = sock->sk;
119 if (sk->sk_prot->bind)
120 return sk->sk_prot->bind(sk, uaddr, addr_len);
122 return sock_no_bind(sock, uaddr, addr_len);
125 static int ieee802154_sock_connect(struct socket *sock, struct sockaddr *uaddr,
126 int addr_len, int flags)
128 struct sock *sk = sock->sk;
130 if (uaddr->sa_family == AF_UNSPEC)
131 return sk->sk_prot->disconnect(sk, flags);
133 return sk->sk_prot->connect(sk, uaddr, addr_len);
136 static int ieee802154_dev_ioctl(struct sock *sk, struct ifreq __user *arg,
140 int ret = -ENOIOCTLCMD;
141 struct net_device *dev;
143 if (copy_from_user(&ifr, arg, sizeof(struct ifreq)))
146 ifr.ifr_name[IFNAMSIZ-1] = 0;
148 dev_load(sock_net(sk), ifr.ifr_name);
149 dev = dev_get_by_name(sock_net(sk), ifr.ifr_name);
151 if (dev->type == ARPHRD_IEEE802154 && dev->netdev_ops->ndo_do_ioctl)
152 ret = dev->netdev_ops->ndo_do_ioctl(dev, &ifr, cmd);
154 if (!ret && copy_to_user(arg, &ifr, sizeof(struct ifreq)))
161 static int ieee802154_sock_ioctl(struct socket *sock, unsigned int cmd,
164 struct sock *sk = sock->sk;
168 return sock_get_timestamp(sk, (struct timeval __user *)arg);
170 return sock_get_timestampns(sk, (struct timespec __user *)arg);
173 return ieee802154_dev_ioctl(sk, (struct ifreq __user *)arg,
176 if (!sk->sk_prot->ioctl)
178 return sk->sk_prot->ioctl(sk, cmd, arg);
182 static const struct proto_ops ieee802154_raw_ops = {
183 .family = PF_IEEE802154,
184 .owner = THIS_MODULE,
185 .release = ieee802154_sock_release,
186 .bind = ieee802154_sock_bind,
187 .connect = ieee802154_sock_connect,
188 .socketpair = sock_no_socketpair,
189 .accept = sock_no_accept,
190 .getname = sock_no_getname,
191 .poll = datagram_poll,
192 .ioctl = ieee802154_sock_ioctl,
193 .listen = sock_no_listen,
194 .shutdown = sock_no_shutdown,
195 .setsockopt = sock_common_setsockopt,
196 .getsockopt = sock_common_getsockopt,
197 .sendmsg = ieee802154_sock_sendmsg,
198 .recvmsg = sock_common_recvmsg,
199 .mmap = sock_no_mmap,
200 .sendpage = sock_no_sendpage,
202 .compat_setsockopt = compat_sock_common_setsockopt,
203 .compat_getsockopt = compat_sock_common_getsockopt,
207 static const struct proto_ops ieee802154_dgram_ops = {
208 .family = PF_IEEE802154,
209 .owner = THIS_MODULE,
210 .release = ieee802154_sock_release,
211 .bind = ieee802154_sock_bind,
212 .connect = ieee802154_sock_connect,
213 .socketpair = sock_no_socketpair,
214 .accept = sock_no_accept,
215 .getname = sock_no_getname,
216 .poll = datagram_poll,
217 .ioctl = ieee802154_sock_ioctl,
218 .listen = sock_no_listen,
219 .shutdown = sock_no_shutdown,
220 .setsockopt = sock_common_setsockopt,
221 .getsockopt = sock_common_getsockopt,
222 .sendmsg = ieee802154_sock_sendmsg,
223 .recvmsg = sock_common_recvmsg,
224 .mmap = sock_no_mmap,
225 .sendpage = sock_no_sendpage,
227 .compat_setsockopt = compat_sock_common_setsockopt,
228 .compat_getsockopt = compat_sock_common_getsockopt,
234 * Create a socket. Initialise the socket, blank the addresses
237 static int ieee802154_create(struct net *net, struct socket *sock,
238 int protocol, int kern)
243 const struct proto_ops *ops;
245 if (!net_eq(net, &init_net))
246 return -EAFNOSUPPORT;
248 switch (sock->type) {
250 proto = &ieee802154_raw_prot;
251 ops = &ieee802154_raw_ops;
254 proto = &ieee802154_dgram_prot;
255 ops = &ieee802154_dgram_ops;
258 rc = -ESOCKTNOSUPPORT;
263 sk = sk_alloc(net, PF_IEEE802154, GFP_KERNEL, proto);
270 sock_init_data(sock, sk);
271 /* FIXME: sk->sk_destruct */
272 sk->sk_family = PF_IEEE802154;
274 /* Checksums on by default */
275 sock_set_flag(sk, SOCK_ZAPPED);
277 if (sk->sk_prot->hash)
278 sk->sk_prot->hash(sk);
280 if (sk->sk_prot->init) {
281 rc = sk->sk_prot->init(sk);
283 sk_common_release(sk);
289 static const struct net_proto_family ieee802154_family_ops = {
290 .family = PF_IEEE802154,
291 .create = ieee802154_create,
292 .owner = THIS_MODULE,
295 static int ieee802154_rcv(struct sk_buff *skb, struct net_device *dev,
296 struct packet_type *pt, struct net_device *orig_dev)
298 if (!netif_running(dev))
300 pr_debug("got frame, type %d, dev %p\n", dev->type, dev);
302 print_hex_dump_bytes("ieee802154_rcv ", DUMP_PREFIX_NONE, skb->data, skb->len);
305 if (!net_eq(dev_net(dev), &init_net))
308 ieee802154_raw_deliver(dev, skb);
310 if (dev->type != ARPHRD_IEEE802154)
313 if (skb->pkt_type != PACKET_OTHERHOST)
314 return ieee802154_dgram_deliver(dev, skb);
322 static struct packet_type ieee802154_packet_type = {
323 .type = __constant_htons(ETH_P_IEEE802154),
324 .func = ieee802154_rcv,
327 static int __init af_ieee802154_init(void)
331 rc = proto_register(&ieee802154_raw_prot, 1);
335 rc = proto_register(&ieee802154_dgram_prot, 1);
339 /* Tell SOCKET that we are alive */
340 rc = sock_register(&ieee802154_family_ops);
343 dev_add_pack(&ieee802154_packet_type);
349 proto_unregister(&ieee802154_dgram_prot);
351 proto_unregister(&ieee802154_raw_prot);
355 static void __exit af_ieee802154_remove(void)
357 dev_remove_pack(&ieee802154_packet_type);
358 sock_unregister(PF_IEEE802154);
359 proto_unregister(&ieee802154_dgram_prot);
360 proto_unregister(&ieee802154_raw_prot);
363 module_init(af_ieee802154_init);
364 module_exit(af_ieee802154_remove);
366 MODULE_LICENSE("GPL");
367 MODULE_ALIAS_NETPROTO(PF_IEEE802154);