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net/: Kill now superfluous ->last_rx stores.
[deliverable/linux.git] / net / bluetooth / bnep / core.c
1 /*
2 BNEP implementation for Linux Bluetooth stack (BlueZ).
3 Copyright (C) 2001-2002 Inventel Systemes
4 Written 2001-2002 by
5 Clément Moreau <clement.moreau@inventel.fr>
6 David Libault <david.libault@inventel.fr>
7
8 Copyright (C) 2002 Maxim Krasnyansky <maxk@qualcomm.com>
9
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License version 2 as
12 published by the Free Software Foundation;
13
14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
15 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
17 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
18 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
19 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
20 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
21 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
22
23 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
24 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
25 SOFTWARE IS DISCLAIMED.
26 */
27
28 #include <linux/module.h>
29
30 #include <linux/kernel.h>
31 #include <linux/sched.h>
32 #include <linux/signal.h>
33 #include <linux/init.h>
34 #include <linux/wait.h>
35 #include <linux/freezer.h>
36 #include <linux/errno.h>
37 #include <linux/net.h>
38 #include <net/sock.h>
39
40 #include <linux/socket.h>
41 #include <linux/file.h>
42
43 #include <linux/netdevice.h>
44 #include <linux/etherdevice.h>
45 #include <linux/skbuff.h>
46
47 #include <asm/unaligned.h>
48
49 #include <net/bluetooth/bluetooth.h>
50 #include <net/bluetooth/hci_core.h>
51 #include <net/bluetooth/l2cap.h>
52
53 #include "bnep.h"
54
55 #ifndef CONFIG_BT_BNEP_DEBUG
56 #undef BT_DBG
57 #define BT_DBG(D...)
58 #endif
59
60 #define VERSION "1.3"
61
62 static int compress_src = 1;
63 static int compress_dst = 1;
64
65 static LIST_HEAD(bnep_session_list);
66 static DECLARE_RWSEM(bnep_session_sem);
67
68 static struct bnep_session *__bnep_get_session(u8 *dst)
69 {
70 struct bnep_session *s;
71 struct list_head *p;
72
73 BT_DBG("");
74
75 list_for_each(p, &bnep_session_list) {
76 s = list_entry(p, struct bnep_session, list);
77 if (!compare_ether_addr(dst, s->eh.h_source))
78 return s;
79 }
80 return NULL;
81 }
82
83 static void __bnep_link_session(struct bnep_session *s)
84 {
85 /* It's safe to call __module_get() here because sessions are added
86 by the socket layer which has to hold the refference to this module.
87 */
88 __module_get(THIS_MODULE);
89 list_add(&s->list, &bnep_session_list);
90 }
91
92 static void __bnep_unlink_session(struct bnep_session *s)
93 {
94 list_del(&s->list);
95 module_put(THIS_MODULE);
96 }
97
98 static int bnep_send(struct bnep_session *s, void *data, size_t len)
99 {
100 struct socket *sock = s->sock;
101 struct kvec iv = { data, len };
102
103 return kernel_sendmsg(sock, &s->msg, &iv, 1, len);
104 }
105
106 static int bnep_send_rsp(struct bnep_session *s, u8 ctrl, u16 resp)
107 {
108 struct bnep_control_rsp rsp;
109 rsp.type = BNEP_CONTROL;
110 rsp.ctrl = ctrl;
111 rsp.resp = htons(resp);
112 return bnep_send(s, &rsp, sizeof(rsp));
113 }
114
115 #ifdef CONFIG_BT_BNEP_PROTO_FILTER
116 static inline void bnep_set_default_proto_filter(struct bnep_session *s)
117 {
118 /* (IPv4, ARP) */
119 s->proto_filter[0].start = ETH_P_IP;
120 s->proto_filter[0].end = ETH_P_ARP;
121 /* (RARP, AppleTalk) */
122 s->proto_filter[1].start = ETH_P_RARP;
123 s->proto_filter[1].end = ETH_P_AARP;
124 /* (IPX, IPv6) */
125 s->proto_filter[2].start = ETH_P_IPX;
126 s->proto_filter[2].end = ETH_P_IPV6;
127 }
128 #endif
129
130 static int bnep_ctrl_set_netfilter(struct bnep_session *s, __be16 *data, int len)
131 {
132 int n;
133
134 if (len < 2)
135 return -EILSEQ;
136
137 n = get_unaligned_be16(data);
138 data++; len -= 2;
139
140 if (len < n)
141 return -EILSEQ;
142
143 BT_DBG("filter len %d", n);
144
145 #ifdef CONFIG_BT_BNEP_PROTO_FILTER
146 n /= 4;
147 if (n <= BNEP_MAX_PROTO_FILTERS) {
148 struct bnep_proto_filter *f = s->proto_filter;
149 int i;
150
151 for (i = 0; i < n; i++) {
152 f[i].start = get_unaligned_be16(data++);
153 f[i].end = get_unaligned_be16(data++);
154
155 BT_DBG("proto filter start %d end %d",
156 f[i].start, f[i].end);
157 }
158
159 if (i < BNEP_MAX_PROTO_FILTERS)
160 memset(f + i, 0, sizeof(*f));
161
162 if (n == 0)
163 bnep_set_default_proto_filter(s);
164
165 bnep_send_rsp(s, BNEP_FILTER_NET_TYPE_RSP, BNEP_SUCCESS);
166 } else {
167 bnep_send_rsp(s, BNEP_FILTER_NET_TYPE_RSP, BNEP_FILTER_LIMIT_REACHED);
168 }
169 #else
170 bnep_send_rsp(s, BNEP_FILTER_NET_TYPE_RSP, BNEP_FILTER_UNSUPPORTED_REQ);
171 #endif
172 return 0;
173 }
174
175 static int bnep_ctrl_set_mcfilter(struct bnep_session *s, u8 *data, int len)
176 {
177 int n;
178
179 if (len < 2)
180 return -EILSEQ;
181
182 n = get_unaligned_be16(data);
183 data += 2; len -= 2;
184
185 if (len < n)
186 return -EILSEQ;
187
188 BT_DBG("filter len %d", n);
189
190 #ifdef CONFIG_BT_BNEP_MC_FILTER
191 n /= (ETH_ALEN * 2);
192
193 if (n > 0) {
194 s->mc_filter = 0;
195
196 /* Always send broadcast */
197 set_bit(bnep_mc_hash(s->dev->broadcast), (ulong *) &s->mc_filter);
198
199 /* Add address ranges to the multicast hash */
200 for (; n > 0; n--) {
201 u8 a1[6], *a2;
202
203 memcpy(a1, data, ETH_ALEN); data += ETH_ALEN;
204 a2 = data; data += ETH_ALEN;
205
206 BT_DBG("mc filter %s -> %s",
207 batostr((void *) a1), batostr((void *) a2));
208
209 #define INCA(a) { int i = 5; while (i >=0 && ++a[i--] == 0); }
210
211 /* Iterate from a1 to a2 */
212 set_bit(bnep_mc_hash(a1), (ulong *) &s->mc_filter);
213 while (memcmp(a1, a2, 6) < 0 && s->mc_filter != ~0LL) {
214 INCA(a1);
215 set_bit(bnep_mc_hash(a1), (ulong *) &s->mc_filter);
216 }
217 }
218 }
219
220 BT_DBG("mc filter hash 0x%llx", s->mc_filter);
221
222 bnep_send_rsp(s, BNEP_FILTER_MULTI_ADDR_RSP, BNEP_SUCCESS);
223 #else
224 bnep_send_rsp(s, BNEP_FILTER_MULTI_ADDR_RSP, BNEP_FILTER_UNSUPPORTED_REQ);
225 #endif
226 return 0;
227 }
228
229 static int bnep_rx_control(struct bnep_session *s, void *data, int len)
230 {
231 u8 cmd = *(u8 *)data;
232 int err = 0;
233
234 data++; len--;
235
236 switch (cmd) {
237 case BNEP_CMD_NOT_UNDERSTOOD:
238 case BNEP_SETUP_CONN_REQ:
239 case BNEP_SETUP_CONN_RSP:
240 case BNEP_FILTER_NET_TYPE_RSP:
241 case BNEP_FILTER_MULTI_ADDR_RSP:
242 /* Ignore these for now */
243 break;
244
245 case BNEP_FILTER_NET_TYPE_SET:
246 err = bnep_ctrl_set_netfilter(s, data, len);
247 break;
248
249 case BNEP_FILTER_MULTI_ADDR_SET:
250 err = bnep_ctrl_set_mcfilter(s, data, len);
251 break;
252
253 default: {
254 u8 pkt[3];
255 pkt[0] = BNEP_CONTROL;
256 pkt[1] = BNEP_CMD_NOT_UNDERSTOOD;
257 pkt[2] = cmd;
258 bnep_send(s, pkt, sizeof(pkt));
259 }
260 break;
261 }
262
263 return err;
264 }
265
266 static int bnep_rx_extension(struct bnep_session *s, struct sk_buff *skb)
267 {
268 struct bnep_ext_hdr *h;
269 int err = 0;
270
271 do {
272 h = (void *) skb->data;
273 if (!skb_pull(skb, sizeof(*h))) {
274 err = -EILSEQ;
275 break;
276 }
277
278 BT_DBG("type 0x%x len %d", h->type, h->len);
279
280 switch (h->type & BNEP_TYPE_MASK) {
281 case BNEP_EXT_CONTROL:
282 bnep_rx_control(s, skb->data, skb->len);
283 break;
284
285 default:
286 /* Unknown extension, skip it. */
287 break;
288 }
289
290 if (!skb_pull(skb, h->len)) {
291 err = -EILSEQ;
292 break;
293 }
294 } while (!err && (h->type & BNEP_EXT_HEADER));
295
296 return err;
297 }
298
299 static u8 __bnep_rx_hlen[] = {
300 ETH_HLEN, /* BNEP_GENERAL */
301 0, /* BNEP_CONTROL */
302 2, /* BNEP_COMPRESSED */
303 ETH_ALEN + 2, /* BNEP_COMPRESSED_SRC_ONLY */
304 ETH_ALEN + 2 /* BNEP_COMPRESSED_DST_ONLY */
305 };
306 #define BNEP_RX_TYPES (sizeof(__bnep_rx_hlen) - 1)
307
308 static inline int bnep_rx_frame(struct bnep_session *s, struct sk_buff *skb)
309 {
310 struct net_device *dev = s->dev;
311 struct sk_buff *nskb;
312 u8 type;
313
314 s->stats.rx_bytes += skb->len;
315
316 type = *(u8 *) skb->data; skb_pull(skb, 1);
317
318 if ((type & BNEP_TYPE_MASK) > BNEP_RX_TYPES)
319 goto badframe;
320
321 if ((type & BNEP_TYPE_MASK) == BNEP_CONTROL) {
322 bnep_rx_control(s, skb->data, skb->len);
323 kfree_skb(skb);
324 return 0;
325 }
326
327 skb_reset_mac_header(skb);
328
329 /* Verify and pull out header */
330 if (!skb_pull(skb, __bnep_rx_hlen[type & BNEP_TYPE_MASK]))
331 goto badframe;
332
333 s->eh.h_proto = get_unaligned((__be16 *) (skb->data - 2));
334
335 if (type & BNEP_EXT_HEADER) {
336 if (bnep_rx_extension(s, skb) < 0)
337 goto badframe;
338 }
339
340 /* Strip 802.1p header */
341 if (ntohs(s->eh.h_proto) == 0x8100) {
342 if (!skb_pull(skb, 4))
343 goto badframe;
344 s->eh.h_proto = get_unaligned((__be16 *) (skb->data - 2));
345 }
346
347 /* We have to alloc new skb and copy data here :(. Because original skb
348 * may not be modified and because of the alignment requirements. */
349 nskb = alloc_skb(2 + ETH_HLEN + skb->len, GFP_KERNEL);
350 if (!nskb) {
351 s->stats.rx_dropped++;
352 kfree_skb(skb);
353 return -ENOMEM;
354 }
355 skb_reserve(nskb, 2);
356
357 /* Decompress header and construct ether frame */
358 switch (type & BNEP_TYPE_MASK) {
359 case BNEP_COMPRESSED:
360 memcpy(__skb_put(nskb, ETH_HLEN), &s->eh, ETH_HLEN);
361 break;
362
363 case BNEP_COMPRESSED_SRC_ONLY:
364 memcpy(__skb_put(nskb, ETH_ALEN), s->eh.h_dest, ETH_ALEN);
365 memcpy(__skb_put(nskb, ETH_ALEN), skb_mac_header(skb), ETH_ALEN);
366 put_unaligned(s->eh.h_proto, (__be16 *) __skb_put(nskb, 2));
367 break;
368
369 case BNEP_COMPRESSED_DST_ONLY:
370 memcpy(__skb_put(nskb, ETH_ALEN), skb_mac_header(skb),
371 ETH_ALEN);
372 memcpy(__skb_put(nskb, ETH_ALEN + 2), s->eh.h_source,
373 ETH_ALEN + 2);
374 break;
375
376 case BNEP_GENERAL:
377 memcpy(__skb_put(nskb, ETH_ALEN * 2), skb_mac_header(skb),
378 ETH_ALEN * 2);
379 put_unaligned(s->eh.h_proto, (__be16 *) __skb_put(nskb, 2));
380 break;
381 }
382
383 skb_copy_from_linear_data(skb, __skb_put(nskb, skb->len), skb->len);
384 kfree_skb(skb);
385
386 s->stats.rx_packets++;
387 nskb->ip_summed = CHECKSUM_NONE;
388 nskb->protocol = eth_type_trans(nskb, dev);
389 netif_rx_ni(nskb);
390 return 0;
391
392 badframe:
393 s->stats.rx_errors++;
394 kfree_skb(skb);
395 return 0;
396 }
397
398 static u8 __bnep_tx_types[] = {
399 BNEP_GENERAL,
400 BNEP_COMPRESSED_SRC_ONLY,
401 BNEP_COMPRESSED_DST_ONLY,
402 BNEP_COMPRESSED
403 };
404
405 static inline int bnep_tx_frame(struct bnep_session *s, struct sk_buff *skb)
406 {
407 struct ethhdr *eh = (void *) skb->data;
408 struct socket *sock = s->sock;
409 struct kvec iv[3];
410 int len = 0, il = 0;
411 u8 type = 0;
412
413 BT_DBG("skb %p dev %p type %d", skb, skb->dev, skb->pkt_type);
414
415 if (!skb->dev) {
416 /* Control frame sent by us */
417 goto send;
418 }
419
420 iv[il++] = (struct kvec) { &type, 1 };
421 len++;
422
423 if (compress_src && !compare_ether_addr(eh->h_dest, s->eh.h_source))
424 type |= 0x01;
425
426 if (compress_dst && !compare_ether_addr(eh->h_source, s->eh.h_dest))
427 type |= 0x02;
428
429 if (type)
430 skb_pull(skb, ETH_ALEN * 2);
431
432 type = __bnep_tx_types[type];
433 switch (type) {
434 case BNEP_COMPRESSED_SRC_ONLY:
435 iv[il++] = (struct kvec) { eh->h_source, ETH_ALEN };
436 len += ETH_ALEN;
437 break;
438
439 case BNEP_COMPRESSED_DST_ONLY:
440 iv[il++] = (struct kvec) { eh->h_dest, ETH_ALEN };
441 len += ETH_ALEN;
442 break;
443 }
444
445 send:
446 iv[il++] = (struct kvec) { skb->data, skb->len };
447 len += skb->len;
448
449 /* FIXME: linearize skb */
450 {
451 len = kernel_sendmsg(sock, &s->msg, iv, il, len);
452 }
453 kfree_skb(skb);
454
455 if (len > 0) {
456 s->stats.tx_bytes += len;
457 s->stats.tx_packets++;
458 return 0;
459 }
460
461 return len;
462 }
463
464 static int bnep_session(void *arg)
465 {
466 struct bnep_session *s = arg;
467 struct net_device *dev = s->dev;
468 struct sock *sk = s->sock->sk;
469 struct sk_buff *skb;
470 wait_queue_t wait;
471
472 BT_DBG("");
473
474 daemonize("kbnepd %s", dev->name);
475 set_user_nice(current, -15);
476
477 init_waitqueue_entry(&wait, current);
478 add_wait_queue(sk->sk_sleep, &wait);
479 while (!atomic_read(&s->killed)) {
480 set_current_state(TASK_INTERRUPTIBLE);
481
482 // RX
483 while ((skb = skb_dequeue(&sk->sk_receive_queue))) {
484 skb_orphan(skb);
485 bnep_rx_frame(s, skb);
486 }
487
488 if (sk->sk_state != BT_CONNECTED)
489 break;
490
491 // TX
492 while ((skb = skb_dequeue(&sk->sk_write_queue)))
493 if (bnep_tx_frame(s, skb))
494 break;
495 netif_wake_queue(dev);
496
497 schedule();
498 }
499 set_current_state(TASK_RUNNING);
500 remove_wait_queue(sk->sk_sleep, &wait);
501
502 /* Cleanup session */
503 down_write(&bnep_session_sem);
504
505 /* Delete network device */
506 unregister_netdev(dev);
507
508 /* Wakeup user-space polling for socket errors */
509 s->sock->sk->sk_err = EUNATCH;
510
511 wake_up_interruptible(s->sock->sk->sk_sleep);
512
513 /* Release the socket */
514 fput(s->sock->file);
515
516 __bnep_unlink_session(s);
517
518 up_write(&bnep_session_sem);
519 free_netdev(dev);
520 return 0;
521 }
522
523 static struct device *bnep_get_device(struct bnep_session *session)
524 {
525 bdaddr_t *src = &bt_sk(session->sock->sk)->src;
526 bdaddr_t *dst = &bt_sk(session->sock->sk)->dst;
527 struct hci_dev *hdev;
528 struct hci_conn *conn;
529
530 hdev = hci_get_route(dst, src);
531 if (!hdev)
532 return NULL;
533
534 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, dst);
535
536 hci_dev_put(hdev);
537
538 return conn ? &conn->dev : NULL;
539 }
540
541 int bnep_add_connection(struct bnep_connadd_req *req, struct socket *sock)
542 {
543 struct net_device *dev;
544 struct bnep_session *s, *ss;
545 u8 dst[ETH_ALEN], src[ETH_ALEN];
546 int err;
547
548 BT_DBG("");
549
550 baswap((void *) dst, &bt_sk(sock->sk)->dst);
551 baswap((void *) src, &bt_sk(sock->sk)->src);
552
553 /* session struct allocated as private part of net_device */
554 dev = alloc_netdev(sizeof(struct bnep_session),
555 (*req->device) ? req->device : "bnep%d",
556 bnep_net_setup);
557 if (!dev)
558 return -ENOMEM;
559
560 down_write(&bnep_session_sem);
561
562 ss = __bnep_get_session(dst);
563 if (ss && ss->state == BT_CONNECTED) {
564 err = -EEXIST;
565 goto failed;
566 }
567
568 s = dev->priv;
569
570 /* This is rx header therefore addresses are swapped.
571 * ie eh.h_dest is our local address. */
572 memcpy(s->eh.h_dest, &src, ETH_ALEN);
573 memcpy(s->eh.h_source, &dst, ETH_ALEN);
574 memcpy(dev->dev_addr, s->eh.h_dest, ETH_ALEN);
575
576 s->dev = dev;
577 s->sock = sock;
578 s->role = req->role;
579 s->state = BT_CONNECTED;
580
581 s->msg.msg_flags = MSG_NOSIGNAL;
582
583 #ifdef CONFIG_BT_BNEP_MC_FILTER
584 /* Set default mc filter */
585 set_bit(bnep_mc_hash(dev->broadcast), (ulong *) &s->mc_filter);
586 #endif
587
588 #ifdef CONFIG_BT_BNEP_PROTO_FILTER
589 /* Set default protocol filter */
590 bnep_set_default_proto_filter(s);
591 #endif
592
593 SET_NETDEV_DEV(dev, bnep_get_device(s));
594
595 err = register_netdev(dev);
596 if (err) {
597 goto failed;
598 }
599
600 __bnep_link_session(s);
601
602 err = kernel_thread(bnep_session, s, CLONE_KERNEL);
603 if (err < 0) {
604 /* Session thread start failed, gotta cleanup. */
605 unregister_netdev(dev);
606 __bnep_unlink_session(s);
607 goto failed;
608 }
609
610 up_write(&bnep_session_sem);
611 strcpy(req->device, dev->name);
612 return 0;
613
614 failed:
615 up_write(&bnep_session_sem);
616 free_netdev(dev);
617 return err;
618 }
619
620 int bnep_del_connection(struct bnep_conndel_req *req)
621 {
622 struct bnep_session *s;
623 int err = 0;
624
625 BT_DBG("");
626
627 down_read(&bnep_session_sem);
628
629 s = __bnep_get_session(req->dst);
630 if (s) {
631 /* Wakeup user-space which is polling for socket errors.
632 * This is temporary hack untill we have shutdown in L2CAP */
633 s->sock->sk->sk_err = EUNATCH;
634
635 /* Kill session thread */
636 atomic_inc(&s->killed);
637 wake_up_interruptible(s->sock->sk->sk_sleep);
638 } else
639 err = -ENOENT;
640
641 up_read(&bnep_session_sem);
642 return err;
643 }
644
645 static void __bnep_copy_ci(struct bnep_conninfo *ci, struct bnep_session *s)
646 {
647 memcpy(ci->dst, s->eh.h_source, ETH_ALEN);
648 strcpy(ci->device, s->dev->name);
649 ci->flags = s->flags;
650 ci->state = s->state;
651 ci->role = s->role;
652 }
653
654 int bnep_get_connlist(struct bnep_connlist_req *req)
655 {
656 struct list_head *p;
657 int err = 0, n = 0;
658
659 down_read(&bnep_session_sem);
660
661 list_for_each(p, &bnep_session_list) {
662 struct bnep_session *s;
663 struct bnep_conninfo ci;
664
665 s = list_entry(p, struct bnep_session, list);
666
667 __bnep_copy_ci(&ci, s);
668
669 if (copy_to_user(req->ci, &ci, sizeof(ci))) {
670 err = -EFAULT;
671 break;
672 }
673
674 if (++n >= req->cnum)
675 break;
676
677 req->ci++;
678 }
679 req->cnum = n;
680
681 up_read(&bnep_session_sem);
682 return err;
683 }
684
685 int bnep_get_conninfo(struct bnep_conninfo *ci)
686 {
687 struct bnep_session *s;
688 int err = 0;
689
690 down_read(&bnep_session_sem);
691
692 s = __bnep_get_session(ci->dst);
693 if (s)
694 __bnep_copy_ci(ci, s);
695 else
696 err = -ENOENT;
697
698 up_read(&bnep_session_sem);
699 return err;
700 }
701
702 static int __init bnep_init(void)
703 {
704 char flt[50] = "";
705
706 l2cap_load();
707
708 #ifdef CONFIG_BT_BNEP_PROTO_FILTER
709 strcat(flt, "protocol ");
710 #endif
711
712 #ifdef CONFIG_BT_BNEP_MC_FILTER
713 strcat(flt, "multicast");
714 #endif
715
716 BT_INFO("BNEP (Ethernet Emulation) ver %s", VERSION);
717 if (flt[0])
718 BT_INFO("BNEP filters: %s", flt);
719
720 bnep_sock_init();
721 return 0;
722 }
723
724 static void __exit bnep_exit(void)
725 {
726 bnep_sock_cleanup();
727 }
728
729 module_init(bnep_init);
730 module_exit(bnep_exit);
731
732 module_param(compress_src, bool, 0644);
733 MODULE_PARM_DESC(compress_src, "Compress sources headers");
734
735 module_param(compress_dst, bool, 0644);
736 MODULE_PARM_DESC(compress_dst, "Compress destination headers");
737
738 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
739 MODULE_DESCRIPTION("Bluetooth BNEP ver " VERSION);
740 MODULE_VERSION(VERSION);
741 MODULE_LICENSE("GPL");
742 MODULE_ALIAS("bt-proto-4");
Linux kernel - Deliverables
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