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
47 ieee802154_get_dev(struct net *net, const struct ieee802154_addr *addr)
49 struct net_device *dev = NULL;
50 struct net_device *tmp;
51 __le16 pan_id, short_addr;
52 u8 hwaddr[IEEE802154_ADDR_LEN];
55 case IEEE802154_ADDR_LONG:
56 ieee802154_devaddr_to_raw(hwaddr, addr->extended_addr);
58 dev = dev_getbyhwaddr_rcu(net, ARPHRD_IEEE802154, hwaddr);
63 case IEEE802154_ADDR_SHORT:
64 if (addr->pan_id == cpu_to_le16(IEEE802154_PANID_BROADCAST) ||
65 addr->short_addr == cpu_to_le16(IEEE802154_ADDR_UNDEF) ||
66 addr->short_addr == cpu_to_le16(IEEE802154_ADDR_UNDEF))
71 for_each_netdev(net, tmp) {
72 if (tmp->type != ARPHRD_IEEE802154)
75 pan_id = ieee802154_mlme_ops(tmp)->get_pan_id(tmp);
77 ieee802154_mlme_ops(tmp)->get_short_addr(tmp);
79 if (pan_id == addr->pan_id &&
80 short_addr == addr->short_addr) {
90 pr_warning("Unsupported ieee802154 address type: %d\n",
98 static int ieee802154_sock_release(struct socket *sock)
100 struct sock *sk = sock->sk;
104 sk->sk_prot->close(sk, 0);
108 static int ieee802154_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
109 struct msghdr *msg, size_t len)
111 struct sock *sk = sock->sk;
113 return sk->sk_prot->sendmsg(iocb, sk, msg, len);
116 static int ieee802154_sock_bind(struct socket *sock, struct sockaddr *uaddr,
119 struct sock *sk = sock->sk;
121 if (sk->sk_prot->bind)
122 return sk->sk_prot->bind(sk, uaddr, addr_len);
124 return sock_no_bind(sock, uaddr, addr_len);
127 static int ieee802154_sock_connect(struct socket *sock, struct sockaddr *uaddr,
128 int addr_len, int flags)
130 struct sock *sk = sock->sk;
132 if (addr_len < sizeof(uaddr->sa_family))
135 if (uaddr->sa_family == AF_UNSPEC)
136 return sk->sk_prot->disconnect(sk, flags);
138 return sk->sk_prot->connect(sk, uaddr, addr_len);
141 static int ieee802154_dev_ioctl(struct sock *sk, struct ifreq __user *arg,
145 int ret = -ENOIOCTLCMD;
146 struct net_device *dev;
148 if (copy_from_user(&ifr, arg, sizeof(struct ifreq)))
151 ifr.ifr_name[IFNAMSIZ-1] = 0;
153 dev_load(sock_net(sk), ifr.ifr_name);
154 dev = dev_get_by_name(sock_net(sk), ifr.ifr_name);
159 if (dev->type == ARPHRD_IEEE802154 && dev->netdev_ops->ndo_do_ioctl)
160 ret = dev->netdev_ops->ndo_do_ioctl(dev, &ifr, cmd);
162 if (!ret && copy_to_user(arg, &ifr, sizeof(struct ifreq)))
169 static int ieee802154_sock_ioctl(struct socket *sock, unsigned int cmd,
172 struct sock *sk = sock->sk;
176 return sock_get_timestamp(sk, (struct timeval __user *)arg);
178 return sock_get_timestampns(sk, (struct timespec __user *)arg);
181 return ieee802154_dev_ioctl(sk, (struct ifreq __user *)arg,
184 if (!sk->sk_prot->ioctl)
186 return sk->sk_prot->ioctl(sk, cmd, arg);
190 static const struct proto_ops ieee802154_raw_ops = {
191 .family = PF_IEEE802154,
192 .owner = THIS_MODULE,
193 .release = ieee802154_sock_release,
194 .bind = ieee802154_sock_bind,
195 .connect = ieee802154_sock_connect,
196 .socketpair = sock_no_socketpair,
197 .accept = sock_no_accept,
198 .getname = sock_no_getname,
199 .poll = datagram_poll,
200 .ioctl = ieee802154_sock_ioctl,
201 .listen = sock_no_listen,
202 .shutdown = sock_no_shutdown,
203 .setsockopt = sock_common_setsockopt,
204 .getsockopt = sock_common_getsockopt,
205 .sendmsg = ieee802154_sock_sendmsg,
206 .recvmsg = sock_common_recvmsg,
207 .mmap = sock_no_mmap,
208 .sendpage = sock_no_sendpage,
210 .compat_setsockopt = compat_sock_common_setsockopt,
211 .compat_getsockopt = compat_sock_common_getsockopt,
215 static const struct proto_ops ieee802154_dgram_ops = {
216 .family = PF_IEEE802154,
217 .owner = THIS_MODULE,
218 .release = ieee802154_sock_release,
219 .bind = ieee802154_sock_bind,
220 .connect = ieee802154_sock_connect,
221 .socketpair = sock_no_socketpair,
222 .accept = sock_no_accept,
223 .getname = sock_no_getname,
224 .poll = datagram_poll,
225 .ioctl = ieee802154_sock_ioctl,
226 .listen = sock_no_listen,
227 .shutdown = sock_no_shutdown,
228 .setsockopt = sock_common_setsockopt,
229 .getsockopt = sock_common_getsockopt,
230 .sendmsg = ieee802154_sock_sendmsg,
231 .recvmsg = sock_common_recvmsg,
232 .mmap = sock_no_mmap,
233 .sendpage = sock_no_sendpage,
235 .compat_setsockopt = compat_sock_common_setsockopt,
236 .compat_getsockopt = compat_sock_common_getsockopt,
242 * Create a socket. Initialise the socket, blank the addresses
245 static int ieee802154_create(struct net *net, struct socket *sock,
246 int protocol, int kern)
251 const struct proto_ops *ops;
253 if (!net_eq(net, &init_net))
254 return -EAFNOSUPPORT;
256 switch (sock->type) {
258 proto = &ieee802154_raw_prot;
259 ops = &ieee802154_raw_ops;
262 proto = &ieee802154_dgram_prot;
263 ops = &ieee802154_dgram_ops;
266 rc = -ESOCKTNOSUPPORT;
271 sk = sk_alloc(net, PF_IEEE802154, GFP_KERNEL, proto);
278 sock_init_data(sock, sk);
279 /* FIXME: sk->sk_destruct */
280 sk->sk_family = PF_IEEE802154;
282 /* Checksums on by default */
283 sock_set_flag(sk, SOCK_ZAPPED);
285 if (sk->sk_prot->hash)
286 sk->sk_prot->hash(sk);
288 if (sk->sk_prot->init) {
289 rc = sk->sk_prot->init(sk);
291 sk_common_release(sk);
297 static const struct net_proto_family ieee802154_family_ops = {
298 .family = PF_IEEE802154,
299 .create = ieee802154_create,
300 .owner = THIS_MODULE,
303 static int ieee802154_rcv(struct sk_buff *skb, struct net_device *dev,
304 struct packet_type *pt, struct net_device *orig_dev)
306 if (!netif_running(dev))
308 pr_debug("got frame, type %d, dev %p\n", dev->type, dev);
310 print_hex_dump_bytes("ieee802154_rcv ", DUMP_PREFIX_NONE, skb->data, skb->len);
313 if (!net_eq(dev_net(dev), &init_net))
316 ieee802154_raw_deliver(dev, skb);
318 if (dev->type != ARPHRD_IEEE802154)
321 if (skb->pkt_type != PACKET_OTHERHOST)
322 return ieee802154_dgram_deliver(dev, skb);
330 static struct packet_type ieee802154_packet_type = {
331 .type = htons(ETH_P_IEEE802154),
332 .func = ieee802154_rcv,
335 static int __init af_ieee802154_init(void)
339 rc = proto_register(&ieee802154_raw_prot, 1);
343 rc = proto_register(&ieee802154_dgram_prot, 1);
347 /* Tell SOCKET that we are alive */
348 rc = sock_register(&ieee802154_family_ops);
351 dev_add_pack(&ieee802154_packet_type);
357 proto_unregister(&ieee802154_dgram_prot);
359 proto_unregister(&ieee802154_raw_prot);
363 static void __exit af_ieee802154_remove(void)
365 dev_remove_pack(&ieee802154_packet_type);
366 sock_unregister(PF_IEEE802154);
367 proto_unregister(&ieee802154_dgram_prot);
368 proto_unregister(&ieee802154_raw_prot);
371 module_init(af_ieee802154_init);
372 module_exit(af_ieee802154_remove);
374 MODULE_LICENSE("GPL");
375 MODULE_ALIAS_NETPROTO(PF_IEEE802154);