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 (addr_len < sizeof(uaddr->sa_family))
133 if (uaddr->sa_family == AF_UNSPEC)
134 return sk->sk_prot->disconnect(sk, flags);
136 return sk->sk_prot->connect(sk, uaddr, addr_len);
139 static int ieee802154_dev_ioctl(struct sock *sk, struct ifreq __user *arg,
143 int ret = -ENOIOCTLCMD;
144 struct net_device *dev;
146 if (copy_from_user(&ifr, arg, sizeof(struct ifreq)))
149 ifr.ifr_name[IFNAMSIZ-1] = 0;
151 dev_load(sock_net(sk), ifr.ifr_name);
152 dev = dev_get_by_name(sock_net(sk), ifr.ifr_name);
154 if (dev->type == ARPHRD_IEEE802154 && dev->netdev_ops->ndo_do_ioctl)
155 ret = dev->netdev_ops->ndo_do_ioctl(dev, &ifr, cmd);
157 if (!ret && copy_to_user(arg, &ifr, sizeof(struct ifreq)))
164 static int ieee802154_sock_ioctl(struct socket *sock, unsigned int cmd,
167 struct sock *sk = sock->sk;
171 return sock_get_timestamp(sk, (struct timeval __user *)arg);
173 return sock_get_timestampns(sk, (struct timespec __user *)arg);
176 return ieee802154_dev_ioctl(sk, (struct ifreq __user *)arg,
179 if (!sk->sk_prot->ioctl)
181 return sk->sk_prot->ioctl(sk, cmd, arg);
185 static const struct proto_ops ieee802154_raw_ops = {
186 .family = PF_IEEE802154,
187 .owner = THIS_MODULE,
188 .release = ieee802154_sock_release,
189 .bind = ieee802154_sock_bind,
190 .connect = ieee802154_sock_connect,
191 .socketpair = sock_no_socketpair,
192 .accept = sock_no_accept,
193 .getname = sock_no_getname,
194 .poll = datagram_poll,
195 .ioctl = ieee802154_sock_ioctl,
196 .listen = sock_no_listen,
197 .shutdown = sock_no_shutdown,
198 .setsockopt = sock_common_setsockopt,
199 .getsockopt = sock_common_getsockopt,
200 .sendmsg = ieee802154_sock_sendmsg,
201 .recvmsg = sock_common_recvmsg,
202 .mmap = sock_no_mmap,
203 .sendpage = sock_no_sendpage,
205 .compat_setsockopt = compat_sock_common_setsockopt,
206 .compat_getsockopt = compat_sock_common_getsockopt,
210 static const struct proto_ops ieee802154_dgram_ops = {
211 .family = PF_IEEE802154,
212 .owner = THIS_MODULE,
213 .release = ieee802154_sock_release,
214 .bind = ieee802154_sock_bind,
215 .connect = ieee802154_sock_connect,
216 .socketpair = sock_no_socketpair,
217 .accept = sock_no_accept,
218 .getname = sock_no_getname,
219 .poll = datagram_poll,
220 .ioctl = ieee802154_sock_ioctl,
221 .listen = sock_no_listen,
222 .shutdown = sock_no_shutdown,
223 .setsockopt = sock_common_setsockopt,
224 .getsockopt = sock_common_getsockopt,
225 .sendmsg = ieee802154_sock_sendmsg,
226 .recvmsg = sock_common_recvmsg,
227 .mmap = sock_no_mmap,
228 .sendpage = sock_no_sendpage,
230 .compat_setsockopt = compat_sock_common_setsockopt,
231 .compat_getsockopt = compat_sock_common_getsockopt,
237 * Create a socket. Initialise the socket, blank the addresses
240 static int ieee802154_create(struct net *net, struct socket *sock,
241 int protocol, int kern)
246 const struct proto_ops *ops;
248 if (!net_eq(net, &init_net))
249 return -EAFNOSUPPORT;
251 switch (sock->type) {
253 proto = &ieee802154_raw_prot;
254 ops = &ieee802154_raw_ops;
257 proto = &ieee802154_dgram_prot;
258 ops = &ieee802154_dgram_ops;
261 rc = -ESOCKTNOSUPPORT;
266 sk = sk_alloc(net, PF_IEEE802154, GFP_KERNEL, proto);
273 sock_init_data(sock, sk);
274 /* FIXME: sk->sk_destruct */
275 sk->sk_family = PF_IEEE802154;
277 /* Checksums on by default */
278 sock_set_flag(sk, SOCK_ZAPPED);
280 if (sk->sk_prot->hash)
281 sk->sk_prot->hash(sk);
283 if (sk->sk_prot->init) {
284 rc = sk->sk_prot->init(sk);
286 sk_common_release(sk);
292 static const struct net_proto_family ieee802154_family_ops = {
293 .family = PF_IEEE802154,
294 .create = ieee802154_create,
295 .owner = THIS_MODULE,
298 static int ieee802154_rcv(struct sk_buff *skb, struct net_device *dev,
299 struct packet_type *pt, struct net_device *orig_dev)
301 if (!netif_running(dev))
303 pr_debug("got frame, type %d, dev %p\n", dev->type, dev);
305 print_hex_dump_bytes("ieee802154_rcv ", DUMP_PREFIX_NONE, skb->data, skb->len);
308 if (!net_eq(dev_net(dev), &init_net))
311 ieee802154_raw_deliver(dev, skb);
313 if (dev->type != ARPHRD_IEEE802154)
316 if (skb->pkt_type != PACKET_OTHERHOST)
317 return ieee802154_dgram_deliver(dev, skb);
325 static struct packet_type ieee802154_packet_type = {
326 .type = __constant_htons(ETH_P_IEEE802154),
327 .func = ieee802154_rcv,
330 static int __init af_ieee802154_init(void)
334 rc = proto_register(&ieee802154_raw_prot, 1);
338 rc = proto_register(&ieee802154_dgram_prot, 1);
342 /* Tell SOCKET that we are alive */
343 rc = sock_register(&ieee802154_family_ops);
346 dev_add_pack(&ieee802154_packet_type);
352 proto_unregister(&ieee802154_dgram_prot);
354 proto_unregister(&ieee802154_raw_prot);
358 static void __exit af_ieee802154_remove(void)
360 dev_remove_pack(&ieee802154_packet_type);
361 sock_unregister(PF_IEEE802154);
362 proto_unregister(&ieee802154_dgram_prot);
363 proto_unregister(&ieee802154_raw_prot);
366 module_init(af_ieee802154_init);
367 module_exit(af_ieee802154_remove);
369 MODULE_LICENSE("GPL");
370 MODULE_ALIAS_NETPROTO(PF_IEEE802154);