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Netgraph port from FreeBSD - initial porting work
[dragonfly.git] / sys / netgraph7 / bluetooth / socket / ng_btsocket_hci_raw.c
blobcc8bc699e413f727691004af3c156099fe606058
1 /*
2 * ng_btsocket_hci_raw.c
3 */
4
5 /*-
6 * Copyright (c) 2001-2002 Maksim Yevmenkin <m_evmenkin@yahoo.com>
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 * $Id: ng_btsocket_hci_raw.c,v 1.14 2003/09/14 23:29:06 max Exp $
31 * $FreeBSD: src/sys/netgraph/bluetooth/socket/ng_btsocket_hci_raw.c,v 1.23 2006/11/06 13:42:04 rwatson Exp $
32 * $DragonFly: src/sys/netgraph7/bluetooth/socket/ng_btsocket_hci_raw.c,v 1.2 2008/06/26 23:05:40 dillon Exp $
33 */
34
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/bitstring.h>
38 #include <sys/domain.h>
39 #include <sys/endian.h>
40 #include <sys/errno.h>
41 #include <sys/filedesc.h>
42 #include <sys/ioccom.h>
43 #include <sys/kernel.h>
44 #include <sys/lock.h>
45 #include <sys/malloc.h>
46 #include <sys/mbuf.h>
47 #include <sys/mutex.h>
48 #include <sys/priv.h>
49 #include <sys/protosw.h>
50 #include <sys/queue.h>
51 #include <sys/socket.h>
52 #include <sys/socketvar.h>
53 #include <sys/sysctl.h>
54 #include <sys/taskqueue.h>
55 #include "ng_message.h"
56 #include "netgraph.h"
57 #include "bluetooth/include/ng_bluetooth.h"
58 #include "bluetooth/include/ng_hci.h"
59 #include "bluetooth/include/ng_l2cap.h"
60 #include "bluetooth/include/ng_btsocket.h"
61 #include "bluetooth/include/ng_btsocket_hci_raw.h"
62
63 /* MALLOC define */
64 #ifdef NG_SEPARATE_MALLOC
65 MALLOC_DEFINE(M_NETGRAPH_BTSOCKET_HCI_RAW, "netgraph_btsocks_hci_raw",
66 "Netgraph Bluetooth raw HCI sockets");
67 #else
68 #define M_NETGRAPH_BTSOCKET_HCI_RAW M_NETGRAPH
69 #endif /* NG_SEPARATE_MALLOC */
70
71 /* Netgraph node methods */
72 static ng_constructor_t ng_btsocket_hci_raw_node_constructor;
73 static ng_rcvmsg_t ng_btsocket_hci_raw_node_rcvmsg;
74 static ng_shutdown_t ng_btsocket_hci_raw_node_shutdown;
75 static ng_newhook_t ng_btsocket_hci_raw_node_newhook;
76 static ng_connect_t ng_btsocket_hci_raw_node_connect;
77 static ng_rcvdata_t ng_btsocket_hci_raw_node_rcvdata;
78 static ng_disconnect_t ng_btsocket_hci_raw_node_disconnect;
79
80 static void ng_btsocket_hci_raw_input (void *, int);
81 static void ng_btsocket_hci_raw_output(node_p, hook_p, void *, int);
82 static void ng_btsocket_hci_raw_savctl(ng_btsocket_hci_raw_pcb_p,
83 struct mbuf **,
84 struct mbuf *);
85 static int ng_btsocket_hci_raw_filter(ng_btsocket_hci_raw_pcb_p,
86 struct mbuf *, int);
87
88 #define ng_btsocket_hci_raw_wakeup_input_task() \
89 taskqueue_enqueue(taskqueue_swi, &ng_btsocket_hci_raw_task)
90
91 /* Security filter */
92 struct ng_btsocket_hci_raw_sec_filter {
93 bitstr_t bit_decl(events, 0xff);
94 bitstr_t bit_decl(commands[0x3f], 0x3ff);
95 };
96
97 /* Netgraph type descriptor */
98 static struct ng_type typestruct = {
99 .version = NG_ABI_VERSION,
100 .name = NG_BTSOCKET_HCI_RAW_NODE_TYPE,
101 .constructor = ng_btsocket_hci_raw_node_constructor,
102 .rcvmsg = ng_btsocket_hci_raw_node_rcvmsg,
103 .shutdown = ng_btsocket_hci_raw_node_shutdown,
104 .newhook = ng_btsocket_hci_raw_node_newhook,
105 .connect = ng_btsocket_hci_raw_node_connect,
106 .rcvdata = ng_btsocket_hci_raw_node_rcvdata,
107 .disconnect = ng_btsocket_hci_raw_node_disconnect,
108 };
109
110 /* Globals */
111 extern int ifqmaxlen;
112 static u_int32_t ng_btsocket_hci_raw_debug_level;
113 static u_int32_t ng_btsocket_hci_raw_ioctl_timeout;
114 static node_p ng_btsocket_hci_raw_node;
115 static struct ng_bt_itemq ng_btsocket_hci_raw_queue;
116 static struct mtx ng_btsocket_hci_raw_queue_mtx;
117 static struct task ng_btsocket_hci_raw_task;
118 static LIST_HEAD(, ng_btsocket_hci_raw_pcb) ng_btsocket_hci_raw_sockets;
119 static struct mtx ng_btsocket_hci_raw_sockets_mtx;
120 static u_int32_t ng_btsocket_hci_raw_token;
121 static struct mtx ng_btsocket_hci_raw_token_mtx;
122 static struct ng_btsocket_hci_raw_sec_filter *ng_btsocket_hci_raw_sec_filter;
123
124 /* Sysctl tree */
125 SYSCTL_DECL(_net_bluetooth_hci_sockets);
126 SYSCTL_NODE(_net_bluetooth_hci_sockets, OID_AUTO, raw, CTLFLAG_RW,
127 0, "Bluetooth raw HCI sockets family");
128 SYSCTL_INT(_net_bluetooth_hci_sockets_raw, OID_AUTO, debug_level, CTLFLAG_RW,
129 &ng_btsocket_hci_raw_debug_level, NG_BTSOCKET_WARN_LEVEL,
130 "Bluetooth raw HCI sockets debug level");
131 SYSCTL_INT(_net_bluetooth_hci_sockets_raw, OID_AUTO, ioctl_timeout, CTLFLAG_RW,
132 &ng_btsocket_hci_raw_ioctl_timeout, 5,
133 "Bluetooth raw HCI sockets ioctl timeout");
134 SYSCTL_INT(_net_bluetooth_hci_sockets_raw, OID_AUTO, queue_len, CTLFLAG_RD,
135 &ng_btsocket_hci_raw_queue.len, 0,
136 "Bluetooth raw HCI sockets input queue length");
137 SYSCTL_INT(_net_bluetooth_hci_sockets_raw, OID_AUTO, queue_maxlen, CTLFLAG_RD,
138 &ng_btsocket_hci_raw_queue.maxlen, 0,
139 "Bluetooth raw HCI sockets input queue max. length");
140 SYSCTL_INT(_net_bluetooth_hci_sockets_raw, OID_AUTO, queue_drops, CTLFLAG_RD,
141 &ng_btsocket_hci_raw_queue.drops, 0,
142 "Bluetooth raw HCI sockets input queue drops");
143
144 /* Debug */
145 #define NG_BTSOCKET_HCI_RAW_INFO \
146 if (ng_btsocket_hci_raw_debug_level >= NG_BTSOCKET_INFO_LEVEL) \
147 printf
148
149 #define NG_BTSOCKET_HCI_RAW_WARN \
150 if (ng_btsocket_hci_raw_debug_level >= NG_BTSOCKET_WARN_LEVEL) \
151 printf
152
153 #define NG_BTSOCKET_HCI_RAW_ERR \
154 if (ng_btsocket_hci_raw_debug_level >= NG_BTSOCKET_ERR_LEVEL) \
155 printf
156
157 #define NG_BTSOCKET_HCI_RAW_ALERT \
158 if (ng_btsocket_hci_raw_debug_level >= NG_BTSOCKET_ALERT_LEVEL) \
159 printf
160
161 /****************************************************************************
162 ****************************************************************************
163 ** Netgraph specific
164 ****************************************************************************
165 ****************************************************************************/
166
167 /*
168 * Netgraph node constructor. Do not allow to create node of this type.
169 */
170
171 static int
172 ng_btsocket_hci_raw_node_constructor(node_p node)
173 {
174 return (EINVAL);
175 } /* ng_btsocket_hci_raw_node_constructor */
176
177 /*
178 * Netgraph node destructor. Just let old node go and create new fresh one.
179 */
180
181 static int
182 ng_btsocket_hci_raw_node_shutdown(node_p node)
183 {
184 int error = 0;
185
186 NG_NODE_UNREF(node);
187
188 error = ng_make_node_common(&typestruct, &ng_btsocket_hci_raw_node);
189 if (error != 0) {
190 NG_BTSOCKET_HCI_RAW_ALERT(
191 "%s: Could not create Netgraph node, error=%d\n", __func__, error);
192
193 ng_btsocket_hci_raw_node = NULL;
194
195 return (ENOMEM);
196 }
197
198 error = ng_name_node(ng_btsocket_hci_raw_node,
199 NG_BTSOCKET_HCI_RAW_NODE_TYPE);
200 if (error != 0) {
201 NG_BTSOCKET_HCI_RAW_ALERT(
202 "%s: Could not name Netgraph node, error=%d\n", __func__, error);
203
204 NG_NODE_UNREF(ng_btsocket_hci_raw_node);
205 ng_btsocket_hci_raw_node = NULL;
206
207 return (EINVAL);
208 }
209
210 return (0);
211 } /* ng_btsocket_hci_raw_node_shutdown */
212
213 /*
214 * Create new hook. Just say "yes"
215 */
216
217 static int
218 ng_btsocket_hci_raw_node_newhook(node_p node, hook_p hook, char const *name)
219 {
220 return (0);
221 } /* ng_btsocket_hci_raw_node_newhook */
222
223 /*
224 * Connect hook. Just say "yes"
225 */
226
227 static int
228 ng_btsocket_hci_raw_node_connect(hook_p hook)
229 {
230 return (0);
231 } /* ng_btsocket_hci_raw_node_connect */
232
233 /*
234 * Disconnect hook
235 */
236
237 static int
238 ng_btsocket_hci_raw_node_disconnect(hook_p hook)
239 {
240 return (0);
241 } /* ng_btsocket_hci_raw_node_disconnect */
242
243 /*
244 * Receive control message.
245 * Make sure it is a message from HCI node and it is a response.
246 * Enqueue item and schedule input task.
247 */
248
249 static int
250 ng_btsocket_hci_raw_node_rcvmsg(node_p node, item_p item, hook_p lasthook)
251 {
252 struct ng_mesg *msg = NGI_MSG(item); /* item still has message */
253 int error = 0;
254
255 /*
256 * Check for empty sockets list creates LOR when both sender and
257 * receiver device are connected to the same host, so remove it
258 * for now
259 */
260
261 if (msg != NULL &&
262 (msg->header.typecookie == NGM_HCI_COOKIE ||
263 msg->header.typecookie == NGM_GENERIC_COOKIE) &&
264 msg->header.flags & NGF_RESP) {
265 if (msg->header.token == 0) {
266 NG_FREE_ITEM(item);
267 return (0);
268 }
269
270 mtx_lock(&ng_btsocket_hci_raw_queue_mtx);
271 if (NG_BT_ITEMQ_FULL(&ng_btsocket_hci_raw_queue)) {
272 NG_BTSOCKET_HCI_RAW_ERR(
273 "%s: Input queue is full\n", __func__);
274
275 NG_BT_ITEMQ_DROP(&ng_btsocket_hci_raw_queue);
276 NG_FREE_ITEM(item);
277 error = ENOBUFS;
278 } else {
279 NG_BT_ITEMQ_ENQUEUE(&ng_btsocket_hci_raw_queue, item);
280 error = ng_btsocket_hci_raw_wakeup_input_task();
281 }
282 mtx_unlock(&ng_btsocket_hci_raw_queue_mtx);
283 } else {
284 NG_FREE_ITEM(item);
285 error = EINVAL;
286 }
287
288 return (error);
289 } /* ng_btsocket_hci_raw_node_rcvmsg */
290
291 /*
292 * Receive packet from the one of our hook.
293 * Prepend every packet with sockaddr_hci and record sender's node name.
294 * Enqueue item and schedule input task.
295 */
296
297 static int
298 ng_btsocket_hci_raw_node_rcvdata(hook_p hook, item_p item)
299 {
300 struct mbuf *nam = NULL;
301 int error;
302
303 /*
304 * Check for empty sockets list creates LOR when both sender and
305 * receiver device are connected to the same host, so remove it
306 * for now
307 */
308
309 MGET(nam, MB_DONTWAIT, MT_SONAME);
310 if (nam != NULL) {
311 struct sockaddr_hci *sa = mtod(nam, struct sockaddr_hci *);
312
313 nam->m_len = sizeof(struct sockaddr_hci);
314
315 sa->hci_len = sizeof(*sa);
316 sa->hci_family = AF_BLUETOOTH;
317 strlcpy(sa->hci_node, NG_PEER_NODE_NAME(hook),
318 sizeof(sa->hci_node));
319
320 NGI_GET_M(item, nam->m_next);
321 NGI_M(item) = nam;
322
323 mtx_lock(&ng_btsocket_hci_raw_queue_mtx);
324 if (NG_BT_ITEMQ_FULL(&ng_btsocket_hci_raw_queue)) {
325 NG_BTSOCKET_HCI_RAW_ERR(
326 "%s: Input queue is full\n", __func__);
327
328 NG_BT_ITEMQ_DROP(&ng_btsocket_hci_raw_queue);
329 NG_FREE_ITEM(item);
330 error = ENOBUFS;
331 } else {
332 NG_BT_ITEMQ_ENQUEUE(&ng_btsocket_hci_raw_queue, item);
333 error = ng_btsocket_hci_raw_wakeup_input_task();
334 }
335 mtx_unlock(&ng_btsocket_hci_raw_queue_mtx);
336 } else {
337 NG_BTSOCKET_HCI_RAW_ERR(
338 "%s: Failed to allocate address mbuf\n", __func__);
339
340 NG_FREE_ITEM(item);
341 error = ENOBUFS;
342 }
343
344 return (error);
345 } /* ng_btsocket_hci_raw_node_rcvdata */
346
347 /****************************************************************************
348 ****************************************************************************
349 ** Sockets specific
350 ****************************************************************************
351 ****************************************************************************/
352
353 /*
354 * Get next token. We need token to avoid theoretical race where process
355 * submits ioctl() message then interrupts ioctl() and re-submits another
356 * ioctl() on the same socket *before* first ioctl() complete.
357 */
358
359 static void
360 ng_btsocket_hci_raw_get_token(u_int32_t *token)
361 {
362 mtx_lock(&ng_btsocket_hci_raw_token_mtx);
363
364 if (++ ng_btsocket_hci_raw_token == 0)
365 ng_btsocket_hci_raw_token = 1;
366
367 *token = ng_btsocket_hci_raw_token;
368
369 mtx_unlock(&ng_btsocket_hci_raw_token_mtx);
370 } /* ng_btsocket_hci_raw_get_token */
371
372 /*
373 * Send Netgraph message to the node - do not expect reply
374 */
375
376 static int
377 ng_btsocket_hci_raw_send_ngmsg(char *path, int cmd, void *arg, int arglen)
378 {
379 struct ng_mesg *msg = NULL;
380 int error = 0;
381
382 NG_MKMESSAGE(msg, NGM_HCI_COOKIE, cmd, arglen, M_WAITOK | M_NULLOK);
383 if (msg == NULL)
384 return (ENOMEM);
385
386 if (arg != NULL && arglen > 0)
387 bcopy(arg, msg->data, arglen);
388
389 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, path, 0);
390
391 return (error);
392 } /* ng_btsocket_hci_raw_send_ngmsg */
393
394 /*
395 * Send Netgraph message to the node (no data) and wait for reply
396 */
397
398 static int
399 ng_btsocket_hci_raw_send_sync_ngmsg(ng_btsocket_hci_raw_pcb_p pcb, char *path,
400 int cmd, void *rsp, int rsplen)
401 {
402 struct ng_mesg *msg = NULL;
403 int error = 0;
404
405 mtx_assert(&pcb->pcb_mtx, MA_OWNED);
406
407 NG_MKMESSAGE(msg, NGM_HCI_COOKIE, cmd, 0, M_WAITOK | M_NULLOK);
408 if (msg == NULL)
409 return (ENOMEM);
410
411 ng_btsocket_hci_raw_get_token(&msg->header.token);
412 pcb->token = msg->header.token;
413 pcb->msg = NULL;
414
415 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, path, 0);
416 if (error != 0) {
417 pcb->token = 0;
418 return (error);
419 }
420
421 error = msleep(&pcb->msg, &pcb->pcb_mtx, PZERO|PCATCH, "hcictl",
422 ng_btsocket_hci_raw_ioctl_timeout * hz);
423 pcb->token = 0;
424
425 if (error != 0)
426 return (error);
427
428 if (pcb->msg != NULL && pcb->msg->header.cmd == cmd)
429 bcopy(pcb->msg->data, rsp, rsplen);
430 else
431 error = EINVAL;
432
433 NG_FREE_MSG(pcb->msg); /* checks for != NULL */
434
435 return (0);
436 } /* ng_btsocket_hci_raw_send_sync_ngmsg */
437
438 /*
439 * Create control information for the packet
440 */
441
442 static void
443 ng_btsocket_hci_raw_savctl(ng_btsocket_hci_raw_pcb_p pcb, struct mbuf **ctl,
444 struct mbuf *m)
445 {
446 int dir;
447 struct timeval tv;
448
449 mtx_assert(&pcb->pcb_mtx, MA_OWNED);
450
451 if (pcb->flags & NG_BTSOCKET_HCI_RAW_DIRECTION) {
452 dir = (m->m_flags & M_PROTO1)? 1 : 0;
453 *ctl = sbcreatecontrol((caddr_t) &dir, sizeof(dir),
454 SCM_HCI_RAW_DIRECTION, SOL_HCI_RAW);
455 if (*ctl != NULL)
456 ctl = &((*ctl)->m_next);
457 }
458
459 if (pcb->so->so_options & SO_TIMESTAMP) {
460 microtime(&tv);
461 *ctl = sbcreatecontrol((caddr_t) &tv, sizeof(tv),
462 SCM_TIMESTAMP, SOL_SOCKET);
463 if (*ctl != NULL)
464 ctl = &((*ctl)->m_next);
465 }
466 } /* ng_btsocket_hci_raw_savctl */
467
468 /*
469 * Raw HCI sockets data input routine
470 */
471
472 static void
473 ng_btsocket_hci_raw_data_input(struct mbuf *nam)
474 {
475 ng_btsocket_hci_raw_pcb_p pcb = NULL;
476 struct mbuf *m0 = NULL, *m = NULL;
477 struct sockaddr_hci *sa = NULL;
478
479 m0 = nam->m_next;
480 nam->m_next = NULL;
481
482 KASSERT((nam->m_type == MT_SONAME),
483 ("%s: m_type=%d\n", __func__, nam->m_type));
484 KASSERT((m0->m_flags & M_PKTHDR),
485 ("%s: m_flags=%#x\n", __func__, m0->m_flags));
486
487 sa = mtod(nam, struct sockaddr_hci *);
488
489 mtx_lock(&ng_btsocket_hci_raw_sockets_mtx);
490
491 LIST_FOREACH(pcb, &ng_btsocket_hci_raw_sockets, next) {
492
493 mtx_lock(&pcb->pcb_mtx);
494
495 /*
496 * If socket was bound then check address and
497 * make sure it matches.
498 */
499
500 if (pcb->addr.hci_node[0] != 0 &&
501 strcmp(sa->hci_node, pcb->addr.hci_node) != 0)
502 goto next;
503
504 /*
505 * Check packet against filters
506 * XXX do we have to call m_pullup() here?
507 */
508
509 if (ng_btsocket_hci_raw_filter(pcb, m0, 1) != 0)
510 goto next;
511
512 /*
513 * Make a copy of the packet, append to the socket's
514 * receive queue and wakeup socket. sbappendaddr()
515 * will check if socket has enough buffer space.
516 */
517
518 m = m_dup(m0, MB_DONTWAIT);
519 if (m != NULL) {
520 struct mbuf *ctl = NULL;
521
522 ng_btsocket_hci_raw_savctl(pcb, &ctl, m);
523
524 if (sbappendaddr(&pcb->so->so_rcv,
525 (struct sockaddr *) sa, m, ctl))
526 sorwakeup(pcb->so);
527 else {
528 NG_BTSOCKET_HCI_RAW_INFO(
529 "%s: sbappendaddr() failed\n", __func__);
530
531 NG_FREE_M(m);
532 NG_FREE_M(ctl);
533 }
534 }
535 next:
536 mtx_unlock(&pcb->pcb_mtx);
537 }
538
539 mtx_unlock(&ng_btsocket_hci_raw_sockets_mtx);
540
541 NG_FREE_M(nam);
542 NG_FREE_M(m0);
543 } /* ng_btsocket_hci_raw_data_input */
544
545 /*
546 * Raw HCI sockets message input routine
547 */
548
549 static void
550 ng_btsocket_hci_raw_msg_input(struct ng_mesg *msg)
551 {
552 ng_btsocket_hci_raw_pcb_p pcb = NULL;
553
554 mtx_lock(&ng_btsocket_hci_raw_sockets_mtx);
555
556 LIST_FOREACH(pcb, &ng_btsocket_hci_raw_sockets, next) {
557 mtx_lock(&pcb->pcb_mtx);
558
559 if (msg->header.token == pcb->token) {
560 pcb->msg = msg;
561 wakeup(&pcb->msg);
562
563 mtx_unlock(&pcb->pcb_mtx);
564 mtx_unlock(&ng_btsocket_hci_raw_sockets_mtx);
565
566 return;
567 }
568
569 mtx_unlock(&pcb->pcb_mtx);
570 }
571
572 mtx_unlock(&ng_btsocket_hci_raw_sockets_mtx);
573
574 NG_FREE_MSG(msg); /* checks for != NULL */
575 } /* ng_btsocket_hci_raw_msg_input */
576
577 /*
578 * Raw HCI sockets input routines
579 */
580
581 static void
582 ng_btsocket_hci_raw_input(void *context, int pending)
583 {
584 item_p item = NULL;
585
586 for (;;) {
587 mtx_lock(&ng_btsocket_hci_raw_queue_mtx);
588 NG_BT_ITEMQ_DEQUEUE(&ng_btsocket_hci_raw_queue, item);
589 mtx_unlock(&ng_btsocket_hci_raw_queue_mtx);
590
591 if (item == NULL)
592 break;
593
594 switch(item->el_flags & NGQF_TYPE) {
595 case NGQF_DATA: {
596 struct mbuf *m = NULL;
597
598 NGI_GET_M(item, m);
599 ng_btsocket_hci_raw_data_input(m);
600 } break;
601
602 case NGQF_MESG: {
603 struct ng_mesg *msg = NULL;
604
605 NGI_GET_MSG(item, msg);
606 ng_btsocket_hci_raw_msg_input(msg);
607 } break;
608
609 default:
610 KASSERT(0,
611 ("%s: invalid item type=%ld\n", __func__, (item->el_flags & NGQF_TYPE)));
612 break;
613 }
614
615 NG_FREE_ITEM(item);
616 }
617 } /* ng_btsocket_hci_raw_input */
618
619 /*
620 * Raw HCI sockets output routine
621 */
622
623 static void
624 ng_btsocket_hci_raw_output(node_p node, hook_p hook, void *arg1, int arg2)
625 {
626 struct mbuf *nam = (struct mbuf *) arg1, *m = NULL;
627 struct sockaddr_hci *sa = NULL;
628 int error;
629
630 m = nam->m_next;
631 nam->m_next = NULL;
632
633 KASSERT((nam->m_type == MT_SONAME),
634 ("%s: m_type=%d\n", __func__, nam->m_type));
635 KASSERT((m->m_flags & M_PKTHDR),
636 ("%s: m_flags=%#x\n", __func__, m->m_flags));
637
638 sa = mtod(nam, struct sockaddr_hci *);
639
640 /*
641 * Find downstream hook
642 * XXX For now access node hook list directly. Should be safe because
643 * we used ng_send_fn() and we should have exclusive lock on the node.
644 */
645
646 LIST_FOREACH(hook, &node->nd_hooks, hk_hooks) {
647 if (hook == NULL || NG_HOOK_NOT_VALID(hook) ||
648 NG_NODE_NOT_VALID(NG_PEER_NODE(hook)))
649 continue;
650
651 if (strcmp(sa->hci_node, NG_PEER_NODE_NAME(hook)) == 0) {
652 NG_SEND_DATA_ONLY(error, hook, m); /* sets m to NULL */
653 break;
654 }
655 }
656
657 NG_FREE_M(nam); /* check for != NULL */
658 NG_FREE_M(m);
659 } /* ng_btsocket_hci_raw_output */
660
661 /*
662 * Check frame against security and socket filters.
663 * d (direction bit) == 1 means incoming frame.
664 */
665
666 static int
667 ng_btsocket_hci_raw_filter(ng_btsocket_hci_raw_pcb_p pcb, struct mbuf *m, int d)
668 {
669 int type, event, opcode;
670
671 mtx_assert(&pcb->pcb_mtx, MA_OWNED);
672
673 switch ((type = *mtod(m, u_int8_t *))) {
674 case NG_HCI_CMD_PKT:
675 if (!(pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED)) {
676 opcode = le16toh(mtod(m, ng_hci_cmd_pkt_t *)->opcode);
677
678 if (!bit_test(
679 ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF(opcode) - 1],
680 NG_HCI_OCF(opcode) - 1))
681 return (EPERM);
682 }
683
684 if (d && !bit_test(pcb->filter.packet_mask, NG_HCI_CMD_PKT - 1))
685 return (EPERM);
686 break;
687
688 case NG_HCI_ACL_DATA_PKT:
689 case NG_HCI_SCO_DATA_PKT:
690 if (!(pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) ||
691 !bit_test(pcb->filter.packet_mask, type - 1) ||
692 !d)
693 return (EPERM);
694 break;
695
696 case NG_HCI_EVENT_PKT:
697 if (!d)
698 return (EINVAL);
699
700 event = mtod(m, ng_hci_event_pkt_t *)->event - 1;
701
702 if (!(pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED))
703 if (!bit_test(ng_btsocket_hci_raw_sec_filter->events, event))
704 return (EPERM);
705
706 if (!bit_test(pcb->filter.event_mask, event))
707 return (EPERM);
708 break;
709
710 default:
711 return (EINVAL);
712 }
713
714 return (0);
715 } /* ng_btsocket_hci_raw_filter */
716
717 /*
718 * Initialize everything
719 */
720
721 void
722 ng_btsocket_hci_raw_init(void)
723 {
724 bitstr_t *f = NULL;
725 int error = 0;
726
727 ng_btsocket_hci_raw_node = NULL;
728 ng_btsocket_hci_raw_debug_level = NG_BTSOCKET_WARN_LEVEL;
729 ng_btsocket_hci_raw_ioctl_timeout = 5;
730
731 /* Register Netgraph node type */
732 error = ng_newtype(&typestruct);
733 if (error != 0) {
734 NG_BTSOCKET_HCI_RAW_ALERT(
735 "%s: Could not register Netgraph node type, error=%d\n", __func__, error);
736
737 return;
738 }
739
740 /* Create Netgrapg node */
741 error = ng_make_node_common(&typestruct, &ng_btsocket_hci_raw_node);
742 if (error != 0) {
743 NG_BTSOCKET_HCI_RAW_ALERT(
744 "%s: Could not create Netgraph node, error=%d\n", __func__, error);
745
746 ng_btsocket_hci_raw_node = NULL;
747
748 return;
749 }
750
751 error = ng_name_node(ng_btsocket_hci_raw_node,
752 NG_BTSOCKET_HCI_RAW_NODE_TYPE);
753 if (error != 0) {
754 NG_BTSOCKET_HCI_RAW_ALERT(
755 "%s: Could not name Netgraph node, error=%d\n", __func__, error);
756
757 NG_NODE_UNREF(ng_btsocket_hci_raw_node);
758 ng_btsocket_hci_raw_node = NULL;
759
760 return;
761 }
762
763 /* Create input queue */
764 NG_BT_ITEMQ_INIT(&ng_btsocket_hci_raw_queue, ifqmaxlen);
765 mtx_init(&ng_btsocket_hci_raw_queue_mtx,
766 "btsocks_hci_raw_queue_mtx", NULL, MTX_DEF);
767 TASK_INIT(&ng_btsocket_hci_raw_task, 0,
768 ng_btsocket_hci_raw_input, NULL);
769
770 /* Create list of sockets */
771 LIST_INIT(&ng_btsocket_hci_raw_sockets);
772 mtx_init(&ng_btsocket_hci_raw_sockets_mtx,
773 "btsocks_hci_raw_sockets_mtx", NULL, MTX_DEF);
774
775 /* Tokens */
776 ng_btsocket_hci_raw_token = 0;
777 mtx_init(&ng_btsocket_hci_raw_token_mtx,
778 "btsocks_hci_raw_token_mtx", NULL, MTX_DEF);
779
780 /*
781 * Security filter
782 * XXX never FREE()ed
783 */
784
785 ng_btsocket_hci_raw_sec_filter = NULL;
786
787 MALLOC(ng_btsocket_hci_raw_sec_filter,
788 struct ng_btsocket_hci_raw_sec_filter *,
789 sizeof(struct ng_btsocket_hci_raw_sec_filter),
790 M_NETGRAPH_BTSOCKET_HCI_RAW, M_WAITOK | M_NULLOK | M_ZERO);
791 if (ng_btsocket_hci_raw_sec_filter == NULL) {
792 printf("%s: Could not allocate security filter!\n", __func__);
793 return;
794 }
795
796 /*
797 * XXX How paranoid can we get?
798 *
799 * Initialize security filter. If bit is set in the mask then
800 * unprivileged socket is allowed to send (receive) this command
801 * (event).
802 */
803
804 /* Enable all events */
805 memset(&ng_btsocket_hci_raw_sec_filter->events, 0xff,
806 sizeof(ng_btsocket_hci_raw_sec_filter->events)/
807 sizeof(ng_btsocket_hci_raw_sec_filter->events[0]));
808
809 /* Disable some critical events */
810 f = ng_btsocket_hci_raw_sec_filter->events;
811 bit_clear(f, NG_HCI_EVENT_RETURN_LINK_KEYS - 1);
812 bit_clear(f, NG_HCI_EVENT_LINK_KEY_NOTIFICATION - 1);
813 bit_clear(f, NG_HCI_EVENT_VENDOR - 1);
814
815 /* Commands - Link control */
816 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_LINK_CONTROL-1];
817 bit_set(f, NG_HCI_OCF_INQUIRY - 1);
818 bit_set(f, NG_HCI_OCF_INQUIRY_CANCEL - 1);
819 bit_set(f, NG_HCI_OCF_PERIODIC_INQUIRY - 1);
820 bit_set(f, NG_HCI_OCF_EXIT_PERIODIC_INQUIRY - 1);
821 bit_set(f, NG_HCI_OCF_REMOTE_NAME_REQ - 1);
822 bit_set(f, NG_HCI_OCF_READ_REMOTE_FEATURES - 1);
823 bit_set(f, NG_HCI_OCF_READ_REMOTE_VER_INFO - 1);
824 bit_set(f, NG_HCI_OCF_READ_CLOCK_OFFSET - 1);
825
826 /* Commands - Link policy */
827 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_LINK_POLICY-1];
828 bit_set(f, NG_HCI_OCF_ROLE_DISCOVERY - 1);
829 bit_set(f, NG_HCI_OCF_READ_LINK_POLICY_SETTINGS - 1);
830
831 /* Commands - Host controller and baseband */
832 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_HC_BASEBAND-1];
833 bit_set(f, NG_HCI_OCF_READ_PIN_TYPE - 1);
834 bit_set(f, NG_HCI_OCF_READ_LOCAL_NAME - 1);
835 bit_set(f, NG_HCI_OCF_READ_CON_ACCEPT_TIMO - 1);
836 bit_set(f, NG_HCI_OCF_READ_PAGE_TIMO - 1);
837 bit_set(f, NG_HCI_OCF_READ_SCAN_ENABLE - 1);
838 bit_set(f, NG_HCI_OCF_READ_PAGE_SCAN_ACTIVITY - 1);
839 bit_set(f, NG_HCI_OCF_READ_INQUIRY_SCAN_ACTIVITY - 1);
840 bit_set(f, NG_HCI_OCF_READ_AUTH_ENABLE - 1);
841 bit_set(f, NG_HCI_OCF_READ_ENCRYPTION_MODE - 1);
842 bit_set(f, NG_HCI_OCF_READ_UNIT_CLASS - 1);
843 bit_set(f, NG_HCI_OCF_READ_VOICE_SETTINGS - 1);
844 bit_set(f, NG_HCI_OCF_READ_AUTO_FLUSH_TIMO - 1);
845 bit_set(f, NG_HCI_OCF_READ_NUM_BROADCAST_RETRANS - 1);
846 bit_set(f, NG_HCI_OCF_READ_HOLD_MODE_ACTIVITY - 1);
847 bit_set(f, NG_HCI_OCF_READ_XMIT_LEVEL - 1);
848 bit_set(f, NG_HCI_OCF_READ_SCO_FLOW_CONTROL - 1);
849 bit_set(f, NG_HCI_OCF_READ_LINK_SUPERVISION_TIMO - 1);
850 bit_set(f, NG_HCI_OCF_READ_SUPPORTED_IAC_NUM - 1);
851 bit_set(f, NG_HCI_OCF_READ_IAC_LAP - 1);
852 bit_set(f, NG_HCI_OCF_READ_PAGE_SCAN_PERIOD - 1);
853 bit_set(f, NG_HCI_OCF_READ_PAGE_SCAN - 1);
854
855 /* Commands - Informational */
856 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_INFO - 1];
857 bit_set(f, NG_HCI_OCF_READ_LOCAL_VER - 1);
858 bit_set(f, NG_HCI_OCF_READ_LOCAL_FEATURES - 1);
859 bit_set(f, NG_HCI_OCF_READ_BUFFER_SIZE - 1);
860 bit_set(f, NG_HCI_OCF_READ_COUNTRY_CODE - 1);
861 bit_set(f, NG_HCI_OCF_READ_BDADDR - 1);
862
863 /* Commands - Status */
864 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_STATUS - 1];
865 bit_set(f, NG_HCI_OCF_READ_FAILED_CONTACT_CNTR - 1);
866 bit_set(f, NG_HCI_OCF_GET_LINK_QUALITY - 1);
867 bit_set(f, NG_HCI_OCF_READ_RSSI - 1);
868
869 /* Commands - Testing */
870 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_TESTING - 1];
871 bit_set(f, NG_HCI_OCF_READ_LOOPBACK_MODE - 1);
872 } /* ng_btsocket_hci_raw_init */
873
874 /*
875 * Abort connection on socket
876 */
877
878 void
879 ng_btsocket_hci_raw_abort(struct socket *so)
880 {
881 } /* ng_btsocket_hci_raw_abort */
882
883 void
884 ng_btsocket_hci_raw_close(struct socket *so)
885 {
886 } /* ng_btsocket_hci_raw_close */
887
888 /*
889 * Create new raw HCI socket
890 */
891
892 int
893 ng_btsocket_hci_raw_attach(struct socket *so, int proto, struct thread *td)
894 {
895 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so);
896 int error = 0;
897
898 if (pcb != NULL)
899 return (EISCONN);
900
901 if (ng_btsocket_hci_raw_node == NULL)
902 return (EPROTONOSUPPORT);
903 if (proto != BLUETOOTH_PROTO_HCI)
904 return (EPROTONOSUPPORT);
905 if (so->so_type != SOCK_RAW)
906 return (ESOCKTNOSUPPORT);
907
908 error = soreserve(so, NG_BTSOCKET_HCI_RAW_SENDSPACE,
909 NG_BTSOCKET_HCI_RAW_RECVSPACE);
910 if (error != 0)
911 return (error);
912
913 MALLOC(pcb, ng_btsocket_hci_raw_pcb_p, sizeof(*pcb),
914 M_NETGRAPH_BTSOCKET_HCI_RAW, M_WAITOK | M_NULLOK | M_ZERO);
915 if (pcb == NULL)
916 return (ENOMEM);
917
918 so->so_pcb = (caddr_t) pcb;
919 pcb->so = so;
920
921 if (priv_check(td, PRIV_NETBLUETOOTH_RAW) == 0)
922 pcb->flags |= NG_BTSOCKET_HCI_RAW_PRIVILEGED;
923
924 /*
925 * Set default socket filter. By default socket only accepts HCI
926 * Command_Complete and Command_Status event packets.
927 */
928
929 bit_set(pcb->filter.event_mask, NG_HCI_EVENT_COMMAND_COMPL - 1);
930 bit_set(pcb->filter.event_mask, NG_HCI_EVENT_COMMAND_STATUS - 1);
931
932 mtx_init(&pcb->pcb_mtx, "btsocks_hci_raw_pcb_mtx", NULL, MTX_DEF);
933
934 mtx_lock(&ng_btsocket_hci_raw_sockets_mtx);
935 LIST_INSERT_HEAD(&ng_btsocket_hci_raw_sockets, pcb, next);
936 mtx_unlock(&ng_btsocket_hci_raw_sockets_mtx);
937
938 return (0);
939 } /* ng_btsocket_hci_raw_attach */
940
941 /*
942 * Bind raw HCI socket
943 */
944
945 int
946 ng_btsocket_hci_raw_bind(struct socket *so, struct sockaddr *nam,
947 struct thread *td)
948 {
949 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so);
950 struct sockaddr_hci *sa = (struct sockaddr_hci *) nam;
951
952 if (pcb == NULL)
953 return (EINVAL);
954 if (ng_btsocket_hci_raw_node == NULL)
955 return (EINVAL);
956
957 if (sa == NULL)
958 return (EINVAL);
959 if (sa->hci_family != AF_BLUETOOTH)
960 return (EAFNOSUPPORT);
961 if (sa->hci_len != sizeof(*sa))
962 return (EINVAL);
963 if (sa->hci_node[0] == 0)
964 return (EINVAL);
965
966 mtx_lock(&pcb->pcb_mtx);
967 bcopy(sa, &pcb->addr, sizeof(pcb->addr));
968 mtx_unlock(&pcb->pcb_mtx);
969
970 return (0);
971 } /* ng_btsocket_hci_raw_bind */
972
973 /*
974 * Connect raw HCI socket
975 */
976
977 int
978 ng_btsocket_hci_raw_connect(struct socket *so, struct sockaddr *nam,
979 struct thread *td)
980 {
981 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so);
982 struct sockaddr_hci *sa = (struct sockaddr_hci *) nam;
983
984 if (pcb == NULL)
985 return (EINVAL);
986 if (ng_btsocket_hci_raw_node == NULL)
987 return (EINVAL);
988
989 if (sa == NULL)
990 return (EINVAL);
991 if (sa->hci_family != AF_BLUETOOTH)
992 return (EAFNOSUPPORT);
993 if (sa->hci_len != sizeof(*sa))
994 return (EINVAL);
995 if (sa->hci_node[0] == 0)
996 return (EDESTADDRREQ);
997
998 mtx_lock(&pcb->pcb_mtx);
999
1000 if (bcmp(sa, &pcb->addr, sizeof(pcb->addr)) != 0) {
1001 mtx_unlock(&pcb->pcb_mtx);
1002 return (EADDRNOTAVAIL);
1003 }
1004
1005 soisconnected(so);
1006
1007 mtx_unlock(&pcb->pcb_mtx);
1008
1009 return (0);
1010 } /* ng_btsocket_hci_raw_connect */
1011
1012 /*
1013 * Process ioctl on socket
1014 */
1015
1016 int
1017 ng_btsocket_hci_raw_control(struct socket *so, u_long cmd, caddr_t data,
1018 struct ifnet *ifp, struct thread *td)
1019 {
1020 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so);
1021 char path[NG_NODESIZ + 1];
1022 struct ng_mesg *msg = NULL;
1023 int error = 0;
1024
1025 if (pcb == NULL)
1026 return (EINVAL);
1027 if (ng_btsocket_hci_raw_node == NULL)
1028 return (EINVAL);
1029
1030 mtx_lock(&pcb->pcb_mtx);
1031
1032 /* Check if we have device name */
1033 if (pcb->addr.hci_node[0] == 0) {
1034 mtx_unlock(&pcb->pcb_mtx);
1035 return (EHOSTUNREACH);
1036 }
1037
1038 /* Check if we have pending ioctl() */
1039 if (pcb->token != 0) {
1040 mtx_unlock(&pcb->pcb_mtx);
1041 return (EBUSY);
1042 }
1043
1044 snprintf(path, sizeof(path), "%s:", pcb->addr.hci_node);
1045
1046 switch (cmd) {
1047 case SIOC_HCI_RAW_NODE_GET_STATE: {
1048 struct ng_btsocket_hci_raw_node_state *p =
1049 (struct ng_btsocket_hci_raw_node_state *) data;
1050
1051 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path,
1052 NGM_HCI_NODE_GET_STATE,
1053 &p->state, sizeof(p->state));
1054 } break;
1055
1056 case SIOC_HCI_RAW_NODE_INIT:
1057 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED)
1058 error = ng_btsocket_hci_raw_send_ngmsg(path,
1059 NGM_HCI_NODE_INIT, NULL, 0);
1060 else
1061 error = EPERM;
1062 break;
1063
1064 case SIOC_HCI_RAW_NODE_GET_DEBUG: {
1065 struct ng_btsocket_hci_raw_node_debug *p =
1066 (struct ng_btsocket_hci_raw_node_debug *) data;
1067
1068 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path,
1069 NGM_HCI_NODE_GET_DEBUG,
1070 &p->debug, sizeof(p->debug));
1071 } break;
1072
1073 case SIOC_HCI_RAW_NODE_SET_DEBUG: {
1074 struct ng_btsocket_hci_raw_node_debug *p =
1075 (struct ng_btsocket_hci_raw_node_debug *) data;
1076
1077 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED)
1078 error = ng_btsocket_hci_raw_send_ngmsg(path,
1079 NGM_HCI_NODE_SET_DEBUG, &p->debug,
1080 sizeof(p->debug));
1081 else
1082 error = EPERM;
1083 } break;
1084
1085 case SIOC_HCI_RAW_NODE_GET_BUFFER: {
1086 struct ng_btsocket_hci_raw_node_buffer *p =
1087 (struct ng_btsocket_hci_raw_node_buffer *) data;
1088
1089 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path,
1090 NGM_HCI_NODE_GET_BUFFER,
1091 &p->buffer, sizeof(p->buffer));
1092 } break;
1093
1094 case SIOC_HCI_RAW_NODE_GET_BDADDR: {
1095 struct ng_btsocket_hci_raw_node_bdaddr *p =
1096 (struct ng_btsocket_hci_raw_node_bdaddr *) data;
1097
1098 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path,
1099 NGM_HCI_NODE_GET_BDADDR,
1100 &p->bdaddr, sizeof(p->bdaddr));
1101 } break;
1102
1103 case SIOC_HCI_RAW_NODE_GET_FEATURES: {
1104 struct ng_btsocket_hci_raw_node_features *p =
1105 (struct ng_btsocket_hci_raw_node_features *) data;
1106
1107 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path,
1108 NGM_HCI_NODE_GET_FEATURES,
1109 &p->features, sizeof(p->features));
1110 } break;
1111
1112 case SIOC_HCI_RAW_NODE_GET_STAT: {
1113 struct ng_btsocket_hci_raw_node_stat *p =
1114 (struct ng_btsocket_hci_raw_node_stat *) data;
1115
1116 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path,
1117 NGM_HCI_NODE_GET_STAT,
1118 &p->stat, sizeof(p->stat));
1119 } break;
1120
1121 case SIOC_HCI_RAW_NODE_RESET_STAT:
1122 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED)
1123 error = ng_btsocket_hci_raw_send_ngmsg(path,
1124 NGM_HCI_NODE_RESET_STAT, NULL, 0);
1125 else
1126 error = EPERM;
1127 break;
1128
1129 case SIOC_HCI_RAW_NODE_FLUSH_NEIGHBOR_CACHE:
1130 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED)
1131 error = ng_btsocket_hci_raw_send_ngmsg(path,
1132 NGM_HCI_NODE_FLUSH_NEIGHBOR_CACHE,
1133 NULL, 0);
1134 else
1135 error = EPERM;
1136 break;
1137
1138 case SIOC_HCI_RAW_NODE_GET_NEIGHBOR_CACHE: {
1139 struct ng_btsocket_hci_raw_node_neighbor_cache *p =
1140 (struct ng_btsocket_hci_raw_node_neighbor_cache *) data;
1141 ng_hci_node_get_neighbor_cache_ep *p1 = NULL;
1142 ng_hci_node_neighbor_cache_entry_ep *p2 = NULL;
1143
1144 if (p->num_entries <= 0 ||
1145 p->num_entries > NG_HCI_MAX_NEIGHBOR_NUM ||
1146 p->entries == NULL) {
1147 error = EINVAL;
1148 break;
1149 }
1150
1151 NG_MKMESSAGE(msg, NGM_HCI_COOKIE,
1152 NGM_HCI_NODE_GET_NEIGHBOR_CACHE, 0, M_WAITOK | M_NULLOK);
1153 if (msg == NULL) {
1154 error = ENOMEM;
1155 break;
1156 }
1157 ng_btsocket_hci_raw_get_token(&msg->header.token);
1158 pcb->token = msg->header.token;
1159 pcb->msg = NULL;
1160
1161 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, path, 0);
1162 if (error != 0) {
1163 pcb->token = 0;
1164 break;
1165 }
1166
1167 error = msleep(&pcb->msg, &pcb->pcb_mtx,
1168 PZERO|PCATCH, "hcictl",
1169 ng_btsocket_hci_raw_ioctl_timeout * hz);
1170 pcb->token = 0;
1171
1172 if (error != 0)
1173 break;
1174
1175 if (pcb->msg != NULL &&
1176 pcb->msg->header.cmd == NGM_HCI_NODE_GET_NEIGHBOR_CACHE) {
1177 /* Return data back to user space */
1178 p1 = (ng_hci_node_get_neighbor_cache_ep *)
1179 (pcb->msg->data);
1180 p2 = (ng_hci_node_neighbor_cache_entry_ep *)
1181 (p1 + 1);
1182
1183 p->num_entries = min(p->num_entries, p1->num_entries);
1184 if (p->num_entries > 0)
1185 error = copyout((caddr_t) p2,
1186 (caddr_t) p->entries,
1187 p->num_entries * sizeof(*p2));
1188 } else
1189 error = EINVAL;
1190
1191 NG_FREE_MSG(pcb->msg); /* checks for != NULL */
1192 }break;
1193
1194 case SIOC_HCI_RAW_NODE_GET_CON_LIST: {
1195 struct ng_btsocket_hci_raw_con_list *p =
1196 (struct ng_btsocket_hci_raw_con_list *) data;
1197 ng_hci_node_con_list_ep *p1 = NULL;
1198 ng_hci_node_con_ep *p2 = NULL;
1199
1200 if (p->num_connections == 0 ||
1201 p->num_connections > NG_HCI_MAX_CON_NUM ||
1202 p->connections == NULL) {
1203 error = EINVAL;
1204 break;
1205 }
1206
1207 NG_MKMESSAGE(msg, NGM_HCI_COOKIE, NGM_HCI_NODE_GET_CON_LIST,
1208 0, M_WAITOK | M_NULLOK);
1209 if (msg == NULL) {
1210 error = ENOMEM;
1211 break;
1212 }
1213 ng_btsocket_hci_raw_get_token(&msg->header.token);
1214 pcb->token = msg->header.token;
1215 pcb->msg = NULL;
1216
1217 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, path, 0);
1218 if (error != 0) {
1219 pcb->token = 0;
1220 break;
1221 }
1222
1223 error = msleep(&pcb->msg, &pcb->pcb_mtx,
1224 PZERO|PCATCH, "hcictl",
1225 ng_btsocket_hci_raw_ioctl_timeout * hz);
1226 pcb->token = 0;
1227
1228 if (error != 0)
1229 break;
1230
1231 if (pcb->msg != NULL &&
1232 pcb->msg->header.cmd == NGM_HCI_NODE_GET_CON_LIST) {
1233 /* Return data back to user space */
1234 p1 = (ng_hci_node_con_list_ep *)(pcb->msg->data);
1235 p2 = (ng_hci_node_con_ep *)(p1 + 1);
1236
1237 p->num_connections = min(p->num_connections,
1238 p1->num_connections);
1239 if (p->num_connections > 0)
1240 error = copyout((caddr_t) p2,
1241 (caddr_t) p->connections,
1242 p->num_connections * sizeof(*p2));
1243 } else
1244 error = EINVAL;
1245
1246 NG_FREE_MSG(pcb->msg); /* checks for != NULL */
1247 } break;
1248
1249 case SIOC_HCI_RAW_NODE_GET_LINK_POLICY_MASK: {
1250 struct ng_btsocket_hci_raw_node_link_policy_mask *p =
1251 (struct ng_btsocket_hci_raw_node_link_policy_mask *)
1252 data;
1253
1254 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path,
1255 NGM_HCI_NODE_GET_LINK_POLICY_SETTINGS_MASK,
1256 &p->policy_mask, sizeof(p->policy_mask));
1257 } break;
1258
1259 case SIOC_HCI_RAW_NODE_SET_LINK_POLICY_MASK: {
1260 struct ng_btsocket_hci_raw_node_link_policy_mask *p =
1261 (struct ng_btsocket_hci_raw_node_link_policy_mask *)
1262 data;
1263
1264 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED)
1265 error = ng_btsocket_hci_raw_send_ngmsg(path,
1266 NGM_HCI_NODE_SET_LINK_POLICY_SETTINGS_MASK,
1267 &p->policy_mask,
1268 sizeof(p->policy_mask));
1269 else
1270 error = EPERM;
1271 } break;
1272
1273 case SIOC_HCI_RAW_NODE_GET_PACKET_MASK: {
1274 struct ng_btsocket_hci_raw_node_packet_mask *p =
1275 (struct ng_btsocket_hci_raw_node_packet_mask *) data;
1276
1277 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path,
1278 NGM_HCI_NODE_GET_PACKET_MASK,
1279 &p->packet_mask, sizeof(p->packet_mask));
1280 } break;
1281
1282 case SIOC_HCI_RAW_NODE_SET_PACKET_MASK: {
1283 struct ng_btsocket_hci_raw_node_packet_mask *p =
1284 (struct ng_btsocket_hci_raw_node_packet_mask *) data;
1285
1286 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED)
1287 error = ng_btsocket_hci_raw_send_ngmsg(path,
1288 NGM_HCI_NODE_SET_PACKET_MASK,
1289 &p->packet_mask,
1290 sizeof(p->packet_mask));
1291 else
1292 error = EPERM;
1293 } break;
1294
1295 case SIOC_HCI_RAW_NODE_GET_ROLE_SWITCH: {
1296 struct ng_btsocket_hci_raw_node_role_switch *p =
1297 (struct ng_btsocket_hci_raw_node_role_switch *) data;
1298
1299 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path,
1300 NGM_HCI_NODE_GET_ROLE_SWITCH,
1301 &p->role_switch, sizeof(p->role_switch));
1302 } break;
1303
1304 case SIOC_HCI_RAW_NODE_SET_ROLE_SWITCH: {
1305 struct ng_btsocket_hci_raw_node_role_switch *p =
1306 (struct ng_btsocket_hci_raw_node_role_switch *) data;
1307
1308 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED)
1309 error = ng_btsocket_hci_raw_send_ngmsg(path,
1310 NGM_HCI_NODE_SET_ROLE_SWITCH,
1311 &p->role_switch,
1312 sizeof(p->role_switch));
1313 else
1314 error = EPERM;
1315 } break;
1316
1317 case SIOC_HCI_RAW_NODE_LIST_NAMES: {
1318 struct ng_btsocket_hci_raw_node_list_names *nl =
1319 (struct ng_btsocket_hci_raw_node_list_names *) data;
1320 struct nodeinfo *ni = nl->names;
1321
1322 if (nl->num_names == 0) {
1323 error = EINVAL;
1324 break;
1325 }
1326
1327 NG_MKMESSAGE(msg, NGM_GENERIC_COOKIE, NGM_LISTNAMES,
1328 0, M_WAITOK | M_NULLOK);
1329 if (msg == NULL) {
1330 error = ENOMEM;
1331 break;
1332 }
1333 ng_btsocket_hci_raw_get_token(&msg->header.token);
1334 pcb->token = msg->header.token;
1335 pcb->msg = NULL;
1336
1337 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, ".:", 0);
1338 if (error != 0) {
1339 pcb->token = 0;
1340 break;
1341 }
1342
1343 error = msleep(&pcb->msg, &pcb->pcb_mtx,
1344 PZERO|PCATCH, "hcictl",
1345 ng_btsocket_hci_raw_ioctl_timeout * hz);
1346 pcb->token = 0;
1347
1348 if (error != 0)
1349 break;
1350
1351 if (pcb->msg != NULL && pcb->msg->header.cmd == NGM_LISTNAMES) {
1352 /* Return data back to user space */
1353 struct namelist *nl1 = (struct namelist *) pcb->msg->data;
1354 struct nodeinfo *ni1 = &nl1->nodeinfo[0];
1355
1356 while (nl->num_names > 0 && nl1->numnames > 0) {
1357 if (strcmp(ni1->type, NG_HCI_NODE_TYPE) == 0) {
1358 error = copyout((caddr_t) ni1,
1359 (caddr_t) ni,
1360 sizeof(*ni));
1361 if (error != 0)
1362 break;
1363
1364 nl->num_names --;
1365 ni ++;
1366 }
1367
1368 nl1->numnames --;
1369 ni1 ++;
1370 }
1371
1372 nl->num_names = ni - nl->names;
1373 } else
1374 error = EINVAL;
1375
1376 NG_FREE_MSG(pcb->msg); /* checks for != NULL */
1377 } break;
1378
1379 default:
1380 error = EINVAL;
1381 break;
1382 }
1383
1384 mtx_unlock(&pcb->pcb_mtx);
1385
1386 return (error);
1387 } /* ng_btsocket_hci_raw_control */
1388
1389 /*
1390 * Process getsockopt/setsockopt system calls
1391 */
1392
1393 int
1394 ng_btsocket_hci_raw_ctloutput(struct socket *so, struct sockopt *sopt)
1395 {
1396 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so);
1397 struct ng_btsocket_hci_raw_filter filter;
1398 int error = 0, dir;
1399
1400 if (pcb == NULL)
1401 return (EINVAL);
1402 if (ng_btsocket_hci_raw_node == NULL)
1403 return (EINVAL);
1404
1405 if (sopt->sopt_level != SOL_HCI_RAW)
1406 return (0);
1407
1408 mtx_lock(&pcb->pcb_mtx);
1409
1410 switch (sopt->sopt_dir) {
1411 case SOPT_GET:
1412 switch (sopt->sopt_name) {
1413 case SO_HCI_RAW_FILTER:
1414 error = sooptcopyout(sopt, &pcb->filter,
1415 sizeof(pcb->filter));
1416 break;
1417
1418 case SO_HCI_RAW_DIRECTION:
1419 dir = (pcb->flags & NG_BTSOCKET_HCI_RAW_DIRECTION)?1:0;
1420 error = sooptcopyout(sopt, &dir, sizeof(dir));
1421 break;
1422
1423 default:
1424 error = EINVAL;
1425 break;
1426 }
1427 break;
1428
1429 case SOPT_SET:
1430 switch (sopt->sopt_name) {
1431 case SO_HCI_RAW_FILTER:
1432 error = sooptcopyin(sopt, &filter, sizeof(filter),
1433 sizeof(filter));
1434 if (error == 0)
1435 bcopy(&filter, &pcb->filter,
1436 sizeof(pcb->filter));
1437 break;
1438
1439 case SO_HCI_RAW_DIRECTION:
1440 error = sooptcopyin(sopt, &dir, sizeof(dir),
1441 sizeof(dir));
1442 if (error != 0)
1443 break;
1444
1445 if (dir)
1446 pcb->flags |= NG_BTSOCKET_HCI_RAW_DIRECTION;
1447 else
1448 pcb->flags &= ~NG_BTSOCKET_HCI_RAW_DIRECTION;
1449 break;
1450
1451 default:
1452 error = EINVAL;
1453 break;
1454 }
1455 break;
1456
1457 default:
1458 error = EINVAL;
1459 break;
1460 }
1461
1462 mtx_unlock(&pcb->pcb_mtx);
1463
1464 return (error);
1465 } /* ng_btsocket_hci_raw_ctloutput */
1466
1467 /*
1468 * Detach raw HCI socket
1469 */
1470
1471 void
1472 ng_btsocket_hci_raw_detach(struct socket *so)
1473 {
1474 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so);
1475
1476 KASSERT(pcb != NULL, ("ng_btsocket_hci_raw_detach: pcb == NULL"));
1477
1478 if (ng_btsocket_hci_raw_node == NULL)
1479 return;
1480
1481 mtx_lock(&ng_btsocket_hci_raw_sockets_mtx);
1482 mtx_lock(&pcb->pcb_mtx);
1483
1484 LIST_REMOVE(pcb, next);
1485
1486 mtx_unlock(&pcb->pcb_mtx);
1487 mtx_unlock(&ng_btsocket_hci_raw_sockets_mtx);
1488
1489 mtx_destroy(&pcb->pcb_mtx);
1490
1491 bzero(pcb, sizeof(*pcb));
1492 FREE(pcb, M_NETGRAPH_BTSOCKET_HCI_RAW);
1493
1494 so->so_pcb = NULL;
1495 } /* ng_btsocket_hci_raw_detach */
1496
1497 /*
1498 * Disconnect raw HCI socket
1499 */
1500
1501 int
1502 ng_btsocket_hci_raw_disconnect(struct socket *so)
1503 {
1504 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so);
1505
1506 if (pcb == NULL)
1507 return (EINVAL);
1508 if (ng_btsocket_hci_raw_node == NULL)
1509 return (EINVAL);
1510
1511 mtx_lock(&pcb->pcb_mtx);
1512 soisdisconnected(so);
1513 mtx_unlock(&pcb->pcb_mtx);
1514
1515 return (0);
1516 } /* ng_btsocket_hci_raw_disconnect */
1517
1518 /*
1519 * Get socket peer's address
1520 */
1521
1522 int
1523 ng_btsocket_hci_raw_peeraddr(struct socket *so, struct sockaddr **nam)
1524 {
1525 return (ng_btsocket_hci_raw_sockaddr(so, nam));
1526 } /* ng_btsocket_hci_raw_peeraddr */
1527
1528 /*
1529 * Send data
1530 */
1531
1532 int
1533 ng_btsocket_hci_raw_send(struct socket *so, int flags, struct mbuf *m,
1534 struct sockaddr *sa, struct mbuf *control, struct thread *td)
1535 {
1536 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so);
1537 struct mbuf *nam = NULL;
1538 int error = 0;
1539
1540 if (ng_btsocket_hci_raw_node == NULL) {
1541 error = ENETDOWN;
1542 goto drop;
1543 }
1544 if (pcb == NULL) {
1545 error = EINVAL;
1546 goto drop;
1547 }
1548 if (control != NULL) {
1549 error = EINVAL;
1550 goto drop;
1551 }
1552
1553 if (m->m_pkthdr.len < sizeof(ng_hci_cmd_pkt_t) ||
1554 m->m_pkthdr.len > sizeof(ng_hci_cmd_pkt_t) + NG_HCI_CMD_PKT_SIZE) {
1555 error = EMSGSIZE;
1556 goto drop;
1557 }
1558
1559 if (m->m_len < sizeof(ng_hci_cmd_pkt_t)) {
1560 if ((m = m_pullup(m, sizeof(ng_hci_cmd_pkt_t))) == NULL) {
1561 error = ENOBUFS;
1562 goto drop;
1563 }
1564 }
1565 if (*mtod(m, u_int8_t *) != NG_HCI_CMD_PKT) {
1566 error = ENOTSUP;
1567 goto drop;
1568 }
1569
1570 mtx_lock(&pcb->pcb_mtx);
1571
1572 error = ng_btsocket_hci_raw_filter(pcb, m, 0);
1573 if (error != 0) {
1574 mtx_unlock(&pcb->pcb_mtx);
1575 goto drop;
1576 }
1577
1578 if (sa == NULL) {
1579 if (pcb->addr.hci_node[0] == 0) {
1580 mtx_unlock(&pcb->pcb_mtx);
1581 error = EDESTADDRREQ;
1582 goto drop;
1583 }
1584
1585 sa = (struct sockaddr *) &pcb->addr;
1586 }
1587
1588 MGET(nam, MB_DONTWAIT, MT_SONAME);
1589 if (nam == NULL) {
1590 mtx_unlock(&pcb->pcb_mtx);
1591 error = ENOBUFS;
1592 goto drop;
1593 }
1594
1595 nam->m_len = sizeof(struct sockaddr_hci);
1596 bcopy(sa,mtod(nam, struct sockaddr_hci *),sizeof(struct sockaddr_hci));
1597
1598 nam->m_next = m;
1599 m = NULL;
1600
1601 mtx_unlock(&pcb->pcb_mtx);
1602
1603 return (ng_send_fn(ng_btsocket_hci_raw_node, NULL,
1604 ng_btsocket_hci_raw_output, nam, 0));
1605 drop:
1606 NG_FREE_M(control); /* NG_FREE_M checks for != NULL */
1607 NG_FREE_M(nam);
1608 NG_FREE_M(m);
1609
1610 return (error);
1611 } /* ng_btsocket_hci_raw_send */
1612
1613 /*
1614 * Get socket address
1615 */
1616
1617 int
1618 ng_btsocket_hci_raw_sockaddr(struct socket *so, struct sockaddr **nam)
1619 {
1620 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so);
1621 struct sockaddr_hci sa;
1622
1623 if (pcb == NULL)
1624 return (EINVAL);
1625 if (ng_btsocket_hci_raw_node == NULL)
1626 return (EINVAL);
1627
1628 bzero(&sa, sizeof(sa));
1629 sa.hci_len = sizeof(sa);
1630 sa.hci_family = AF_BLUETOOTH;
1631
1632 mtx_lock(&pcb->pcb_mtx);
1633 strlcpy(sa.hci_node, pcb->addr.hci_node, sizeof(sa.hci_node));
1634 mtx_unlock(&pcb->pcb_mtx);
1635
1636 *nam = sodupsockaddr((struct sockaddr *) &sa, M_WAITOK | M_NULLOK);
1637
1638 return ((*nam == NULL)? ENOMEM : 0);
1639 } /* ng_btsocket_hci_raw_sockaddr */
1640
DragonFly BSD