blob: 526d0273991a5c99ee2bb2e664bf394640f7a25f [file] [log] [blame]
Remi Denis-Courmont4b07b3f2008-09-22 20:02:10 -07001/*
2 * File: af_phonet.c
3 *
4 * Phonet protocols family
5 *
6 * Copyright (C) 2008 Nokia Corporation.
7 *
8 * Contact: Remi Denis-Courmont <remi.denis-courmont@nokia.com>
9 * Original author: Sakari Ailus <sakari.ailus@nokia.com>
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * version 2 as published by the Free Software Foundation.
14 *
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
23 * 02110-1301 USA
24 */
25
26#include <linux/kernel.h>
27#include <linux/module.h>
28#include <asm/unaligned.h>
29#include <net/sock.h>
30
31#include <linux/if_phonet.h>
32#include <linux/phonet.h>
33#include <net/phonet/phonet.h>
Remi Denis-Courmontf8ff6022008-09-22 20:03:44 -070034#include <net/phonet/pn_dev.h>
Remi Denis-Courmont4b07b3f2008-09-22 20:02:10 -070035
Alexey Dobriyan566521d2008-11-19 14:17:41 -080036/* Transport protocol registration */
37static struct phonet_protocol *proto_tab[PHONET_NPROTO] __read_mostly;
Alexey Dobriyan566521d2008-11-19 14:17:41 -080038
39static struct phonet_protocol *phonet_proto_get(int protocol)
40{
41 struct phonet_protocol *pp;
42
43 if (protocol >= PHONET_NPROTO)
44 return NULL;
45
Rémi Denis-Courmont7ed01322009-11-13 05:01:18 +000046 rcu_read_lock();
Rémi Denis-Courmontb2a5dec2009-11-16 22:17:24 +000047 pp = rcu_dereference(proto_tab[protocol]);
Alexey Dobriyan566521d2008-11-19 14:17:41 -080048 if (pp && !try_module_get(pp->prot->owner))
49 pp = NULL;
Rémi Denis-Courmont7ed01322009-11-13 05:01:18 +000050 rcu_read_unlock();
Alexey Dobriyan566521d2008-11-19 14:17:41 -080051
52 return pp;
53}
54
55static inline void phonet_proto_put(struct phonet_protocol *pp)
56{
57 module_put(pp->prot->owner);
58}
Remi Denis-Courmont4b07b3f2008-09-22 20:02:10 -070059
60/* protocol family functions */
61
Eric Paris3f378b62009-11-05 22:18:14 -080062static int pn_socket_create(struct net *net, struct socket *sock, int protocol,
63 int kern)
Remi Denis-Courmont4b07b3f2008-09-22 20:02:10 -070064{
Remi Denis-Courmontba113a92008-09-22 20:05:19 -070065 struct sock *sk;
66 struct pn_sock *pn;
Remi Denis-Courmont4b07b3f2008-09-22 20:02:10 -070067 struct phonet_protocol *pnp;
68 int err;
69
Remi Denis-Courmont4b07b3f2008-09-22 20:02:10 -070070 if (!capable(CAP_SYS_ADMIN))
71 return -EPERM;
72
73 if (protocol == 0) {
74 /* Default protocol selection */
75 switch (sock->type) {
76 case SOCK_DGRAM:
77 protocol = PN_PROTO_PHONET;
78 break;
Rémi Denis-Courmont96414582008-10-05 11:15:13 -070079 case SOCK_SEQPACKET:
80 protocol = PN_PROTO_PIPE;
81 break;
Remi Denis-Courmont4b07b3f2008-09-22 20:02:10 -070082 default:
83 return -EPROTONOSUPPORT;
84 }
85 }
86
87 pnp = phonet_proto_get(protocol);
Rémi Denis-Courmont25532822008-10-05 11:14:27 -070088 if (pnp == NULL &&
89 request_module("net-pf-%d-proto-%d", PF_PHONET, protocol) == 0)
90 pnp = phonet_proto_get(protocol);
Johannes Berg95a5afc2008-10-16 15:24:51 -070091
Remi Denis-Courmont4b07b3f2008-09-22 20:02:10 -070092 if (pnp == NULL)
93 return -EPROTONOSUPPORT;
94 if (sock->type != pnp->sock_type) {
95 err = -EPROTONOSUPPORT;
96 goto out;
97 }
98
Remi Denis-Courmontba113a92008-09-22 20:05:19 -070099 sk = sk_alloc(net, PF_PHONET, GFP_KERNEL, pnp->prot);
100 if (sk == NULL) {
101 err = -ENOMEM;
102 goto out;
103 }
104
105 sock_init_data(sock, sk);
106 sock->state = SS_UNCONNECTED;
107 sock->ops = pnp->ops;
108 sk->sk_backlog_rcv = sk->sk_prot->backlog_rcv;
109 sk->sk_protocol = protocol;
110 pn = pn_sk(sk);
111 pn->sobject = 0;
112 pn->resource = 0;
113 sk->sk_prot->init(sk);
114 err = 0;
Remi Denis-Courmont4b07b3f2008-09-22 20:02:10 -0700115
116out:
117 phonet_proto_put(pnp);
118 return err;
119}
120
Stephen Hemmingerec1b4cf2009-10-05 05:58:39 +0000121static const struct net_proto_family phonet_proto_family = {
Rémi Denis-Courmont25532822008-10-05 11:14:27 -0700122 .family = PF_PHONET,
Remi Denis-Courmont4b07b3f2008-09-22 20:02:10 -0700123 .create = pn_socket_create,
124 .owner = THIS_MODULE,
125};
126
Remi Denis-Courmont5f770762008-09-22 20:08:04 -0700127/* Phonet device header operations */
128static int pn_header_create(struct sk_buff *skb, struct net_device *dev,
129 unsigned short type, const void *daddr,
130 const void *saddr, unsigned len)
131{
132 u8 *media = skb_push(skb, 1);
133
134 if (type != ETH_P_PHONET)
135 return -1;
136
137 if (!saddr)
138 saddr = dev->dev_addr;
139 *media = *(const u8 *)saddr;
140 return 1;
141}
142
143static int pn_header_parse(const struct sk_buff *skb, unsigned char *haddr)
144{
145 const u8 *media = skb_mac_header(skb);
146 *haddr = *media;
147 return 1;
148}
149
150struct header_ops phonet_header_ops = {
151 .create = pn_header_create,
152 .parse = pn_header_parse,
153};
154EXPORT_SYMBOL(phonet_header_ops);
155
Remi Denis-Courmont107d0d92008-09-22 20:05:57 -0700156/*
157 * Prepends an ISI header and sends a datagram.
158 */
159static int pn_send(struct sk_buff *skb, struct net_device *dev,
Remi Denis-Courmontbe0c52b2008-09-22 20:09:13 -0700160 u16 dst, u16 src, u8 res, u8 irq)
Remi Denis-Courmont107d0d92008-09-22 20:05:57 -0700161{
162 struct phonethdr *ph;
163 int err;
164
Rémi Denis-Courmontebfe92c2008-11-16 19:48:49 -0800165 if (skb->len + 2 > 0xffff /* Phonet length field limit */ ||
166 skb->len + sizeof(struct phonethdr) > dev->mtu) {
Remi Denis-Courmont107d0d92008-09-22 20:05:57 -0700167 err = -EMSGSIZE;
168 goto drop;
169 }
170
Rémi Denis-Courmont18a11662009-09-23 03:17:11 +0000171 /* Broadcast sending is not implemented */
172 if (pn_addr(dst) == PNADDR_BROADCAST) {
173 err = -EOPNOTSUPP;
174 goto drop;
175 }
176
Remi Denis-Courmont107d0d92008-09-22 20:05:57 -0700177 skb_reset_transport_header(skb);
178 WARN_ON(skb_headroom(skb) & 1); /* HW assumes word alignment */
179 skb_push(skb, sizeof(struct phonethdr));
180 skb_reset_network_header(skb);
181 ph = pn_hdr(skb);
182 ph->pn_rdev = pn_dev(dst);
183 ph->pn_sdev = pn_dev(src);
184 ph->pn_res = res;
185 ph->pn_length = __cpu_to_be16(skb->len + 2 - sizeof(*ph));
186 ph->pn_robj = pn_obj(dst);
187 ph->pn_sobj = pn_obj(src);
188
189 skb->protocol = htons(ETH_P_PHONET);
190 skb->priority = 0;
191 skb->dev = dev;
192
Rémi Denis-Courmontaa6c45f2009-10-14 00:48:30 +0000193 if (skb->pkt_type == PACKET_LOOPBACK) {
Remi Denis-Courmont107d0d92008-09-22 20:05:57 -0700194 skb_reset_mac_header(skb);
Remi Denis-Courmont107d0d92008-09-22 20:05:57 -0700195 skb_orphan(skb);
Remi Denis-Courmontbe0c52b2008-09-22 20:09:13 -0700196 if (irq)
197 netif_rx(skb);
198 else
199 netif_rx_ni(skb);
Remi Denis-Courmont107d0d92008-09-22 20:05:57 -0700200 err = 0;
201 } else {
202 err = dev_hard_header(skb, dev, ntohs(skb->protocol),
203 NULL, NULL, skb->len);
204 if (err < 0) {
205 err = -EHOSTUNREACH;
206 goto drop;
207 }
208 err = dev_queue_xmit(skb);
209 }
210
211 return err;
212drop:
213 kfree_skb(skb);
214 return err;
215}
216
Remi Denis-Courmontbe0c52b2008-09-22 20:09:13 -0700217static int pn_raw_send(const void *data, int len, struct net_device *dev,
218 u16 dst, u16 src, u8 res)
219{
220 struct sk_buff *skb = alloc_skb(MAX_PHONET_HEADER + len, GFP_ATOMIC);
221 if (skb == NULL)
222 return -ENOMEM;
223
Rémi Denis-Courmontaa6c45f2009-10-14 00:48:30 +0000224 if (phonet_address_lookup(dev_net(dev), pn_addr(dst)) == 0)
225 skb->pkt_type = PACKET_LOOPBACK;
226
Remi Denis-Courmontbe0c52b2008-09-22 20:09:13 -0700227 skb_reserve(skb, MAX_PHONET_HEADER);
228 __skb_put(skb, len);
229 skb_copy_to_linear_data(skb, data, len);
230 return pn_send(skb, dev, dst, src, res, 1);
231}
232
Remi Denis-Courmont107d0d92008-09-22 20:05:57 -0700233/*
234 * Create a Phonet header for the skb and send it out. Returns
235 * non-zero error code if failed. The skb is freed then.
236 */
237int pn_skb_send(struct sock *sk, struct sk_buff *skb,
238 const struct sockaddr_pn *target)
239{
Rémi Denis-Courmontaa6c45f2009-10-14 00:48:30 +0000240 struct net *net = sock_net(sk);
Remi Denis-Courmont107d0d92008-09-22 20:05:57 -0700241 struct net_device *dev;
242 struct pn_sock *pn = pn_sk(sk);
243 int err;
244 u16 src;
245 u8 daddr = pn_sockaddr_get_addr(target), saddr = PN_NO_ADDR;
246
247 err = -EHOSTUNREACH;
248 if (sk->sk_bound_dev_if)
Rémi Denis-Courmontaa6c45f2009-10-14 00:48:30 +0000249 dev = dev_get_by_index(net, sk->sk_bound_dev_if);
250 else if (phonet_address_lookup(net, daddr) == 0) {
251 dev = phonet_device_get(net);
252 skb->pkt_type = PACKET_LOOPBACK;
253 } else
254 dev = phonet_route_output(net, daddr);
255
Remi Denis-Courmont107d0d92008-09-22 20:05:57 -0700256 if (!dev || !(dev->flags & IFF_UP))
257 goto drop;
258
259 saddr = phonet_address_get(dev, daddr);
260 if (saddr == PN_NO_ADDR)
261 goto drop;
262
263 src = pn->sobject;
264 if (!pn_addr(src))
265 src = pn_object(saddr, pn_obj(src));
266
267 err = pn_send(skb, dev, pn_sockaddr_get_object(target),
Remi Denis-Courmontbe0c52b2008-09-22 20:09:13 -0700268 src, pn_sockaddr_get_resource(target), 0);
Remi Denis-Courmont107d0d92008-09-22 20:05:57 -0700269 dev_put(dev);
270 return err;
271
272drop:
273 kfree_skb(skb);
274 if (dev)
275 dev_put(dev);
276 return err;
277}
278EXPORT_SYMBOL(pn_skb_send);
279
Remi Denis-Courmontbe0c52b2008-09-22 20:09:13 -0700280/* Do not send an error message in response to an error message */
281static inline int can_respond(struct sk_buff *skb)
282{
283 const struct phonethdr *ph;
284 const struct phonetmsg *pm;
285 u8 submsg_id;
286
287 if (!pskb_may_pull(skb, 3))
288 return 0;
289
290 ph = pn_hdr(skb);
Remi Denis-Courmontbe0c52b2008-09-22 20:09:13 -0700291 if (ph->pn_res == PN_PREFIX && !pskb_may_pull(skb, 5))
292 return 0;
Remi Denis-Courmontc3a90c72008-10-26 23:07:25 -0700293 if (ph->pn_res == PN_COMMGR) /* indications */
294 return 0;
Remi Denis-Courmontbe0c52b2008-09-22 20:09:13 -0700295
296 ph = pn_hdr(skb); /* re-acquires the pointer */
297 pm = pn_msg(skb);
298 if (pm->pn_msg_id != PN_COMMON_MESSAGE)
299 return 1;
300 submsg_id = (ph->pn_res == PN_PREFIX)
301 ? pm->pn_e_submsg_id : pm->pn_submsg_id;
302 if (submsg_id != PN_COMM_ISA_ENTITY_NOT_REACHABLE_RESP &&
303 pm->pn_e_submsg_id != PN_COMM_SERVICE_NOT_IDENTIFIED_RESP)
304 return 1;
305 return 0;
306}
307
308static int send_obj_unreachable(struct sk_buff *rskb)
309{
310 const struct phonethdr *oph = pn_hdr(rskb);
311 const struct phonetmsg *opm = pn_msg(rskb);
312 struct phonetmsg resp;
313
314 memset(&resp, 0, sizeof(resp));
315 resp.pn_trans_id = opm->pn_trans_id;
316 resp.pn_msg_id = PN_COMMON_MESSAGE;
317 if (oph->pn_res == PN_PREFIX) {
318 resp.pn_e_res_id = opm->pn_e_res_id;
319 resp.pn_e_submsg_id = PN_COMM_ISA_ENTITY_NOT_REACHABLE_RESP;
320 resp.pn_e_orig_msg_id = opm->pn_msg_id;
321 resp.pn_e_status = 0;
322 } else {
323 resp.pn_submsg_id = PN_COMM_ISA_ENTITY_NOT_REACHABLE_RESP;
324 resp.pn_orig_msg_id = opm->pn_msg_id;
325 resp.pn_status = 0;
326 }
327 return pn_raw_send(&resp, sizeof(resp), rskb->dev,
328 pn_object(oph->pn_sdev, oph->pn_sobj),
329 pn_object(oph->pn_rdev, oph->pn_robj),
330 oph->pn_res);
331}
332
333static int send_reset_indications(struct sk_buff *rskb)
334{
335 struct phonethdr *oph = pn_hdr(rskb);
336 static const u8 data[4] = {
337 0x00 /* trans ID */, 0x10 /* subscribe msg */,
338 0x00 /* subscription count */, 0x00 /* dummy */
339 };
340
341 return pn_raw_send(data, sizeof(data), rskb->dev,
342 pn_object(oph->pn_sdev, 0x00),
Remi Denis-Courmontc3a90c72008-10-26 23:07:25 -0700343 pn_object(oph->pn_rdev, oph->pn_robj),
344 PN_COMMGR);
Remi Denis-Courmontbe0c52b2008-09-22 20:09:13 -0700345}
346
347
Remi Denis-Courmont4b07b3f2008-09-22 20:02:10 -0700348/* packet type functions */
349
350/*
351 * Stuff received packets to associated sockets.
352 * On error, returns non-zero and releases the skb.
353 */
354static int phonet_rcv(struct sk_buff *skb, struct net_device *dev,
355 struct packet_type *pkttype,
356 struct net_device *orig_dev)
357{
remi.denis-courmont@nokia4b8f7042009-01-23 03:00:26 +0000358 struct net *net = dev_net(dev);
Remi Denis-Courmont4b07b3f2008-09-22 20:02:10 -0700359 struct phonethdr *ph;
360 struct sockaddr_pn sa;
361 u16 len;
362
Remi Denis-Courmont4b07b3f2008-09-22 20:02:10 -0700363 /* check we have at least a full Phonet header */
364 if (!pskb_pull(skb, sizeof(struct phonethdr)))
365 goto out;
366
367 /* check that the advertised length is correct */
368 ph = pn_hdr(skb);
369 len = get_unaligned_be16(&ph->pn_length);
370 if (len < 2)
371 goto out;
372 len -= 2;
373 if ((len > skb->len) || pskb_trim(skb, len))
374 goto out;
375 skb_reset_transport_header(skb);
376
377 pn_skb_get_dst_sockaddr(skb, &sa);
Remi Denis-Courmont4b07b3f2008-09-22 20:02:10 -0700378
Rémi Denis-Courmontf14001f2009-10-14 00:48:27 +0000379 /* check if this is broadcasted */
380 if (pn_sockaddr_get_addr(&sa) == PNADDR_BROADCAST) {
381 pn_deliver_sock_broadcast(net, skb);
382 goto out;
383 }
384
remi.denis-courmont@nokia4b8f7042009-01-23 03:00:26 +0000385 /* check if we are the destination */
386 if (phonet_address_lookup(net, pn_sockaddr_get_addr(&sa)) == 0) {
387 /* Phonet packet input */
388 struct sock *sk = pn_find_sock_by_sa(net, &sa);
389
390 if (sk)
391 return sk_receive_skb(sk, skb, 0);
392
Remi Denis-Courmontbe0c52b2008-09-22 20:09:13 -0700393 if (can_respond(skb)) {
394 send_obj_unreachable(skb);
395 send_reset_indications(skb);
396 }
Rémi Denis-Courmont86a0a1e2009-10-14 00:48:31 +0000397 } else if (unlikely(skb->pkt_type == PACKET_LOOPBACK))
398 goto out; /* Race between address deletion and loopback */
399 else {
400 /* Phonet packet routing */
401 struct net_device *out_dev;
402
403 out_dev = phonet_route_output(net, pn_sockaddr_get_addr(&sa));
404 if (!out_dev) {
405 LIMIT_NETDEBUG(KERN_WARNING"No Phonet route to %02X\n",
406 pn_sockaddr_get_addr(&sa));
407 goto out;
408 }
409
410 __skb_push(skb, sizeof(struct phonethdr));
411 skb->dev = out_dev;
412 if (out_dev == dev) {
413 LIMIT_NETDEBUG(KERN_ERR"Phonet loop to %02X on %s\n",
414 pn_sockaddr_get_addr(&sa), dev->name);
415 goto out_dev;
416 }
417 /* Some drivers (e.g. TUN) do not allocate HW header space */
418 if (skb_cow_head(skb, out_dev->hard_header_len))
419 goto out_dev;
420
421 if (dev_hard_header(skb, out_dev, ETH_P_PHONET, NULL, NULL,
422 skb->len) < 0)
423 goto out_dev;
424 dev_queue_xmit(skb);
425 dev_put(out_dev);
426 return NET_RX_SUCCESS;
427out_dev:
428 dev_put(out_dev);
Remi Denis-Courmontbe0c52b2008-09-22 20:09:13 -0700429 }
Remi Denis-Courmontba113a92008-09-22 20:05:19 -0700430
Remi Denis-Courmont4b07b3f2008-09-22 20:02:10 -0700431out:
432 kfree_skb(skb);
433 return NET_RX_DROP;
434}
435
Stephen Hemminger7546dd92009-03-09 08:18:29 +0000436static struct packet_type phonet_packet_type __read_mostly = {
Harvey Harrison09640e62009-02-01 00:45:17 -0800437 .type = cpu_to_be16(ETH_P_PHONET),
Remi Denis-Courmont4b07b3f2008-09-22 20:02:10 -0700438 .func = phonet_rcv,
439};
440
Rémi Denis-Courmont7ed01322009-11-13 05:01:18 +0000441static DEFINE_MUTEX(proto_tab_lock);
442
Remi Denis-Courmont4b07b3f2008-09-22 20:02:10 -0700443int __init_or_module phonet_proto_register(int protocol,
444 struct phonet_protocol *pp)
445{
446 int err = 0;
447
448 if (protocol >= PHONET_NPROTO)
449 return -EINVAL;
450
451 err = proto_register(pp->prot, 1);
452 if (err)
453 return err;
454
Rémi Denis-Courmont7ed01322009-11-13 05:01:18 +0000455 mutex_lock(&proto_tab_lock);
Remi Denis-Courmont4b07b3f2008-09-22 20:02:10 -0700456 if (proto_tab[protocol])
457 err = -EBUSY;
458 else
Rémi Denis-Courmont7ed01322009-11-13 05:01:18 +0000459 rcu_assign_pointer(proto_tab[protocol], pp);
460 mutex_unlock(&proto_tab_lock);
Remi Denis-Courmont4b07b3f2008-09-22 20:02:10 -0700461
462 return err;
463}
464EXPORT_SYMBOL(phonet_proto_register);
465
466void phonet_proto_unregister(int protocol, struct phonet_protocol *pp)
467{
Rémi Denis-Courmont7ed01322009-11-13 05:01:18 +0000468 mutex_lock(&proto_tab_lock);
Remi Denis-Courmont4b07b3f2008-09-22 20:02:10 -0700469 BUG_ON(proto_tab[protocol] != pp);
Rémi Denis-Courmont7ed01322009-11-13 05:01:18 +0000470 rcu_assign_pointer(proto_tab[protocol], NULL);
471 mutex_unlock(&proto_tab_lock);
472 synchronize_rcu();
Remi Denis-Courmont4b07b3f2008-09-22 20:02:10 -0700473 proto_unregister(pp->prot);
474}
475EXPORT_SYMBOL(phonet_proto_unregister);
476
Remi Denis-Courmont4b07b3f2008-09-22 20:02:10 -0700477/* Module registration */
478static int __init phonet_init(void)
479{
480 int err;
481
remi.denis-courmont@nokia76e02cf2009-01-23 03:00:27 +0000482 err = phonet_device_init();
483 if (err)
484 return err;
485
Rémi Denis-Courmont6b0d07b2009-11-09 02:17:01 +0000486 pn_sock_init();
Remi Denis-Courmont4b07b3f2008-09-22 20:02:10 -0700487 err = sock_register(&phonet_proto_family);
488 if (err) {
489 printk(KERN_ALERT
490 "phonet protocol family initialization failed\n");
remi.denis-courmont@nokia76e02cf2009-01-23 03:00:27 +0000491 goto err_sock;
Remi Denis-Courmont4b07b3f2008-09-22 20:02:10 -0700492 }
493
494 dev_add_pack(&phonet_packet_type);
Remi Denis-Courmont87ab4e22008-09-22 20:08:39 -0700495 phonet_sysctl_init();
Remi Denis-Courmont107d0d92008-09-22 20:05:57 -0700496
497 err = isi_register();
498 if (err)
499 goto err;
Remi Denis-Courmont4b07b3f2008-09-22 20:02:10 -0700500 return 0;
Remi Denis-Courmont107d0d92008-09-22 20:05:57 -0700501
502err:
Remi Denis-Courmont87ab4e22008-09-22 20:08:39 -0700503 phonet_sysctl_exit();
Rémi Denis-Courmont25532822008-10-05 11:14:27 -0700504 sock_unregister(PF_PHONET);
Remi Denis-Courmont107d0d92008-09-22 20:05:57 -0700505 dev_remove_pack(&phonet_packet_type);
remi.denis-courmont@nokia76e02cf2009-01-23 03:00:27 +0000506err_sock:
Remi Denis-Courmont107d0d92008-09-22 20:05:57 -0700507 phonet_device_exit();
508 return err;
Remi Denis-Courmont4b07b3f2008-09-22 20:02:10 -0700509}
510
511static void __exit phonet_exit(void)
512{
Remi Denis-Courmont107d0d92008-09-22 20:05:57 -0700513 isi_unregister();
Remi Denis-Courmont87ab4e22008-09-22 20:08:39 -0700514 phonet_sysctl_exit();
Rémi Denis-Courmont25532822008-10-05 11:14:27 -0700515 sock_unregister(PF_PHONET);
Remi Denis-Courmont4b07b3f2008-09-22 20:02:10 -0700516 dev_remove_pack(&phonet_packet_type);
Remi Denis-Courmontf8ff6022008-09-22 20:03:44 -0700517 phonet_device_exit();
Remi Denis-Courmont4b07b3f2008-09-22 20:02:10 -0700518}
519
520module_init(phonet_init);
521module_exit(phonet_exit);
522MODULE_DESCRIPTION("Phonet protocol stack for Linux");
523MODULE_LICENSE("GPL");
Rémi Denis-Courmont25532822008-10-05 11:14:27 -0700524MODULE_ALIAS_NETPROTO(PF_PHONET);