1 /*
2 * ng_btsocket_hci_raw.c
3 */
4
5 /*-
6 * SPDX-License-Identifier: BSD-2-Clause
7 *
8 * Copyright (c) 2001-2002 Maksim Yevmenkin <m_evmenkin@yahoo.com>
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * $Id: ng_btsocket_hci_raw.c,v 1.14 2003/09/14 23:29:06 max 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
56 #include <net/vnet.h>
57
58 #include <netgraph/ng_message.h>
59 #include <netgraph/netgraph.h>
60 #include <netgraph/bluetooth/include/ng_bluetooth.h>
61 #include <netgraph/bluetooth/include/ng_hci.h>
62 #include <netgraph/bluetooth/include/ng_l2cap.h>
63 #include <netgraph/bluetooth/include/ng_btsocket.h>
64 #include <netgraph/bluetooth/include/ng_btsocket_hci_raw.h>
65
66 /* MALLOC define */
67 #ifdef NG_SEPARATE_MALLOC
68 static MALLOC_DEFINE(M_NETGRAPH_BTSOCKET_HCI_RAW, "netgraph_btsocks_hci_raw",
69 "Netgraph Bluetooth raw HCI sockets");
70 #else
71 #define M_NETGRAPH_BTSOCKET_HCI_RAW M_NETGRAPH
72 #endif /* NG_SEPARATE_MALLOC */
73
74 /* Netgraph node methods */
75 static ng_constructor_t ng_btsocket_hci_raw_node_constructor;
76 static ng_rcvmsg_t ng_btsocket_hci_raw_node_rcvmsg;
77 static ng_shutdown_t ng_btsocket_hci_raw_node_shutdown;
78 static ng_newhook_t ng_btsocket_hci_raw_node_newhook;
79 static ng_connect_t ng_btsocket_hci_raw_node_connect;
80 static ng_rcvdata_t ng_btsocket_hci_raw_node_rcvdata;
81 static ng_disconnect_t ng_btsocket_hci_raw_node_disconnect;
82
83 static void ng_btsocket_hci_raw_input (void *, int);
84 static void ng_btsocket_hci_raw_output(node_p, hook_p, void *, int);
85 static void ng_btsocket_hci_raw_savctl(ng_btsocket_hci_raw_pcb_p,
86 struct mbuf **,
87 struct mbuf *);
88 static int ng_btsocket_hci_raw_filter(ng_btsocket_hci_raw_pcb_p,
89 struct mbuf *, int);
90
91 #define ng_btsocket_hci_raw_wakeup_input_task() \
92 taskqueue_enqueue(taskqueue_swi, &ng_btsocket_hci_raw_task)
93
94 /* Security filter */
95 struct ng_btsocket_hci_raw_sec_filter {
96 bitstr_t bit_decl(events, 0xff);
97 bitstr_t bit_decl(commands[0x3f], 0x3ff);
98 };
99
100 /* Netgraph type descriptor */
101 static struct ng_type typestruct = {
102 .version = NG_ABI_VERSION,
103 .name = NG_BTSOCKET_HCI_RAW_NODE_TYPE,
104 .constructor = ng_btsocket_hci_raw_node_constructor,
105 .rcvmsg = ng_btsocket_hci_raw_node_rcvmsg,
106 .shutdown = ng_btsocket_hci_raw_node_shutdown,
107 .newhook = ng_btsocket_hci_raw_node_newhook,
108 .connect = ng_btsocket_hci_raw_node_connect,
109 .rcvdata = ng_btsocket_hci_raw_node_rcvdata,
110 .disconnect = ng_btsocket_hci_raw_node_disconnect,
111 };
112
113 /* Globals */
114 static u_int32_t ng_btsocket_hci_raw_debug_level;
115 static u_int32_t ng_btsocket_hci_raw_ioctl_timeout;
116 static node_p ng_btsocket_hci_raw_node;
117 static struct ng_bt_itemq ng_btsocket_hci_raw_queue;
118 static struct mtx ng_btsocket_hci_raw_queue_mtx;
119 static struct task ng_btsocket_hci_raw_task;
120 static LIST_HEAD(, ng_btsocket_hci_raw_pcb) ng_btsocket_hci_raw_sockets;
121 static struct mtx ng_btsocket_hci_raw_sockets_mtx;
122 static u_int32_t ng_btsocket_hci_raw_token;
123 static struct mtx ng_btsocket_hci_raw_token_mtx;
124 static struct ng_btsocket_hci_raw_sec_filter *ng_btsocket_hci_raw_sec_filter;
125 static struct timeval ng_btsocket_hci_raw_lasttime;
126 static int ng_btsocket_hci_raw_curpps;
127
128 /* Sysctl tree */
129 SYSCTL_DECL(_net_bluetooth_hci_sockets);
130 static SYSCTL_NODE(_net_bluetooth_hci_sockets, OID_AUTO, raw,
131 CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
132 "Bluetooth raw HCI sockets family");
133 SYSCTL_UINT(_net_bluetooth_hci_sockets_raw, OID_AUTO, debug_level, CTLFLAG_RW,
134 &ng_btsocket_hci_raw_debug_level, NG_BTSOCKET_WARN_LEVEL,
135 "Bluetooth raw HCI sockets debug level");
136 SYSCTL_UINT(_net_bluetooth_hci_sockets_raw, OID_AUTO, ioctl_timeout, CTLFLAG_RW,
137 &ng_btsocket_hci_raw_ioctl_timeout, 5,
138 "Bluetooth raw HCI sockets ioctl timeout");
139 SYSCTL_UINT(_net_bluetooth_hci_sockets_raw, OID_AUTO, queue_len, CTLFLAG_RD,
140 &ng_btsocket_hci_raw_queue.len, 0,
141 "Bluetooth raw HCI sockets input queue length");
142 SYSCTL_UINT(_net_bluetooth_hci_sockets_raw, OID_AUTO, queue_maxlen, CTLFLAG_RD,
143 &ng_btsocket_hci_raw_queue.maxlen, 0,
144 "Bluetooth raw HCI sockets input queue max. length");
145 SYSCTL_UINT(_net_bluetooth_hci_sockets_raw, OID_AUTO, queue_drops, CTLFLAG_RD,
146 &ng_btsocket_hci_raw_queue.drops, 0,
147 "Bluetooth raw HCI sockets input queue drops");
148
149 /* Debug */
150 #define NG_BTSOCKET_HCI_RAW_INFO \
151 if (ng_btsocket_hci_raw_debug_level >= NG_BTSOCKET_INFO_LEVEL && \
152 ppsratecheck(&ng_btsocket_hci_raw_lasttime, &ng_btsocket_hci_raw_curpps, 1)) \
153 printf
154
155 #define NG_BTSOCKET_HCI_RAW_WARN \
156 if (ng_btsocket_hci_raw_debug_level >= NG_BTSOCKET_WARN_LEVEL && \
157 ppsratecheck(&ng_btsocket_hci_raw_lasttime, &ng_btsocket_hci_raw_curpps, 1)) \
158 printf
159
160 #define NG_BTSOCKET_HCI_RAW_ERR \
161 if (ng_btsocket_hci_raw_debug_level >= NG_BTSOCKET_ERR_LEVEL && \
162 ppsratecheck(&ng_btsocket_hci_raw_lasttime, &ng_btsocket_hci_raw_curpps, 1)) \
163 printf
164
165 #define NG_BTSOCKET_HCI_RAW_ALERT \
166 if (ng_btsocket_hci_raw_debug_level >= NG_BTSOCKET_ALERT_LEVEL && \
167 ppsratecheck(&ng_btsocket_hci_raw_lasttime, &ng_btsocket_hci_raw_curpps, 1)) \
168 printf
169
170 /****************************************************************************
171 ****************************************************************************
172 ** Netgraph specific
173 ****************************************************************************
174 ****************************************************************************/
175
176 /*
177 * Netgraph node constructor. Do not allow to create node of this type.
178 */
179
180 static int
ng_btsocket_hci_raw_node_constructor(node_p node)181 ng_btsocket_hci_raw_node_constructor(node_p node)
182 {
183 return (EINVAL);
184 } /* ng_btsocket_hci_raw_node_constructor */
185
186 /*
187 * Netgraph node destructor. Just let old node go and create new fresh one.
188 */
189
190 static int
ng_btsocket_hci_raw_node_shutdown(node_p node)191 ng_btsocket_hci_raw_node_shutdown(node_p node)
192 {
193 int error = 0;
194
195 NG_NODE_UNREF(node);
196
197 error = ng_make_node_common(&typestruct, &ng_btsocket_hci_raw_node);
198 if (error != 0) {
199 NG_BTSOCKET_HCI_RAW_ALERT(
200 "%s: Could not create Netgraph node, error=%d\n", __func__, error);
201
202 ng_btsocket_hci_raw_node = NULL;
203
204 return (ENOMEM);
205 }
206
207 error = ng_name_node(ng_btsocket_hci_raw_node,
208 NG_BTSOCKET_HCI_RAW_NODE_TYPE);
209 if (error != 0) {
210 NG_BTSOCKET_HCI_RAW_ALERT(
211 "%s: Could not name Netgraph node, error=%d\n", __func__, error);
212
213 NG_NODE_UNREF(ng_btsocket_hci_raw_node);
214 ng_btsocket_hci_raw_node = NULL;
215
216 return (EINVAL);
217 }
218
219 return (0);
220 } /* ng_btsocket_hci_raw_node_shutdown */
221
222 /*
223 * Create new hook. Just say "yes"
224 */
225
226 static int
ng_btsocket_hci_raw_node_newhook(node_p node,hook_p hook,char const * name)227 ng_btsocket_hci_raw_node_newhook(node_p node, hook_p hook, char const *name)
228 {
229 return (0);
230 } /* ng_btsocket_hci_raw_node_newhook */
231
232 /*
233 * Connect hook. Just say "yes"
234 */
235
236 static int
ng_btsocket_hci_raw_node_connect(hook_p hook)237 ng_btsocket_hci_raw_node_connect(hook_p hook)
238 {
239 return (0);
240 } /* ng_btsocket_hci_raw_node_connect */
241
242 /*
243 * Disconnect hook
244 */
245
246 static int
ng_btsocket_hci_raw_node_disconnect(hook_p hook)247 ng_btsocket_hci_raw_node_disconnect(hook_p hook)
248 {
249 return (0);
250 } /* ng_btsocket_hci_raw_node_disconnect */
251
252 /*
253 * Receive control message.
254 * Make sure it is a message from HCI node and it is a response.
255 * Enqueue item and schedule input task.
256 */
257
258 static int
ng_btsocket_hci_raw_node_rcvmsg(node_p node,item_p item,hook_p lasthook)259 ng_btsocket_hci_raw_node_rcvmsg(node_p node, item_p item, hook_p lasthook)
260 {
261 struct ng_mesg *msg = NGI_MSG(item); /* item still has message */
262 int error = 0;
263
264 /*
265 * Check for empty sockets list creates LOR when both sender and
266 * receiver device are connected to the same host, so remove it
267 * for now
268 */
269
270 if (msg != NULL &&
271 (msg->header.typecookie == NGM_HCI_COOKIE ||
272 msg->header.typecookie == NGM_GENERIC_COOKIE) &&
273 msg->header.flags & NGF_RESP) {
274 if (msg->header.token == 0) {
275 NG_FREE_ITEM(item);
276 return (0);
277 }
278
279 mtx_lock(&ng_btsocket_hci_raw_queue_mtx);
280 if (NG_BT_ITEMQ_FULL(&ng_btsocket_hci_raw_queue)) {
281 NG_BTSOCKET_HCI_RAW_ERR(
282 "%s: Input queue is full\n", __func__);
283
284 NG_BT_ITEMQ_DROP(&ng_btsocket_hci_raw_queue);
285 NG_FREE_ITEM(item);
286 error = ENOBUFS;
287 } else {
288 NG_BT_ITEMQ_ENQUEUE(&ng_btsocket_hci_raw_queue, item);
289 error = ng_btsocket_hci_raw_wakeup_input_task();
290 }
291 mtx_unlock(&ng_btsocket_hci_raw_queue_mtx);
292 } else {
293 NG_FREE_ITEM(item);
294 error = EINVAL;
295 }
296
297 return (error);
298 } /* ng_btsocket_hci_raw_node_rcvmsg */
299
300 /*
301 * Receive packet from the one of our hook.
302 * Prepend every packet with sockaddr_hci and record sender's node name.
303 * Enqueue item and schedule input task.
304 */
305
306 static int
ng_btsocket_hci_raw_node_rcvdata(hook_p hook,item_p item)307 ng_btsocket_hci_raw_node_rcvdata(hook_p hook, item_p item)
308 {
309 struct mbuf *nam = NULL;
310 int error;
311
312 /*
313 * Check for empty sockets list creates LOR when both sender and
314 * receiver device are connected to the same host, so remove it
315 * for now
316 */
317
318 MGET(nam, M_NOWAIT, MT_SONAME);
319 if (nam != NULL) {
320 struct sockaddr_hci *sa = mtod(nam, struct sockaddr_hci *);
321
322 nam->m_len = sizeof(struct sockaddr_hci);
323
324 sa->hci_len = sizeof(*sa);
325 sa->hci_family = AF_BLUETOOTH;
326 strlcpy(sa->hci_node, NG_PEER_NODE_NAME(hook),
327 sizeof(sa->hci_node));
328
329 NGI_GET_M(item, nam->m_next);
330 NGI_M(item) = nam;
331
332 mtx_lock(&ng_btsocket_hci_raw_queue_mtx);
333 if (NG_BT_ITEMQ_FULL(&ng_btsocket_hci_raw_queue)) {
334 NG_BTSOCKET_HCI_RAW_ERR(
335 "%s: Input queue is full\n", __func__);
336
337 NG_BT_ITEMQ_DROP(&ng_btsocket_hci_raw_queue);
338 NG_FREE_ITEM(item);
339 error = ENOBUFS;
340 } else {
341 NG_BT_ITEMQ_ENQUEUE(&ng_btsocket_hci_raw_queue, item);
342 error = ng_btsocket_hci_raw_wakeup_input_task();
343 }
344 mtx_unlock(&ng_btsocket_hci_raw_queue_mtx);
345 } else {
346 NG_BTSOCKET_HCI_RAW_ERR(
347 "%s: Failed to allocate address mbuf\n", __func__);
348
349 NG_FREE_ITEM(item);
350 error = ENOBUFS;
351 }
352
353 return (error);
354 } /* ng_btsocket_hci_raw_node_rcvdata */
355
356 /****************************************************************************
357 ****************************************************************************
358 ** Sockets specific
359 ****************************************************************************
360 ****************************************************************************/
361
362 /*
363 * Get next token. We need token to avoid theoretical race where process
364 * submits ioctl() message then interrupts ioctl() and re-submits another
365 * ioctl() on the same socket *before* first ioctl() complete.
366 */
367
368 static void
ng_btsocket_hci_raw_get_token(u_int32_t * token)369 ng_btsocket_hci_raw_get_token(u_int32_t *token)
370 {
371 mtx_lock(&ng_btsocket_hci_raw_token_mtx);
372
373 if (++ ng_btsocket_hci_raw_token == 0)
374 ng_btsocket_hci_raw_token = 1;
375
376 *token = ng_btsocket_hci_raw_token;
377
378 mtx_unlock(&ng_btsocket_hci_raw_token_mtx);
379 } /* ng_btsocket_hci_raw_get_token */
380
381 /*
382 * Send Netgraph message to the node - do not expect reply
383 */
384
385 static int
ng_btsocket_hci_raw_send_ngmsg(char * path,int cmd,void * arg,int arglen)386 ng_btsocket_hci_raw_send_ngmsg(char *path, int cmd, void *arg, int arglen)
387 {
388 struct ng_mesg *msg = NULL;
389 int error = 0;
390
391 NG_MKMESSAGE(msg, NGM_HCI_COOKIE, cmd, arglen, M_NOWAIT);
392 if (msg == NULL)
393 return (ENOMEM);
394
395 if (arg != NULL && arglen > 0)
396 bcopy(arg, msg->data, arglen);
397
398 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, path, 0);
399
400 return (error);
401 } /* ng_btsocket_hci_raw_send_ngmsg */
402
403 /*
404 * Send Netgraph message to the node (no data) and wait for reply
405 */
406
407 static int
ng_btsocket_hci_raw_send_sync_ngmsg(ng_btsocket_hci_raw_pcb_p pcb,char * path,int cmd,void * rsp,int rsplen)408 ng_btsocket_hci_raw_send_sync_ngmsg(ng_btsocket_hci_raw_pcb_p pcb, char *path,
409 int cmd, void *rsp, int rsplen)
410 {
411 struct ng_mesg *msg = NULL;
412 int error = 0;
413
414 mtx_assert(&pcb->pcb_mtx, MA_OWNED);
415
416 NG_MKMESSAGE(msg, NGM_HCI_COOKIE, cmd, 0, M_NOWAIT);
417 if (msg == NULL)
418 return (ENOMEM);
419
420 ng_btsocket_hci_raw_get_token(&msg->header.token);
421 pcb->token = msg->header.token;
422 pcb->msg = NULL;
423
424 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, path, 0);
425 if (error != 0) {
426 pcb->token = 0;
427 return (error);
428 }
429
430 error = msleep(&pcb->msg, &pcb->pcb_mtx, PZERO|PCATCH, "hcictl",
431 ng_btsocket_hci_raw_ioctl_timeout * hz);
432 pcb->token = 0;
433
434 if (error != 0)
435 return (error);
436
437 if (pcb->msg != NULL && pcb->msg->header.cmd == cmd)
438 bcopy(pcb->msg->data, rsp, rsplen);
439 else
440 error = EINVAL;
441
442 NG_FREE_MSG(pcb->msg); /* checks for != NULL */
443
444 return (0);
445 } /* ng_btsocket_hci_raw_send_sync_ngmsg */
446
447 /*
448 * Create control information for the packet
449 */
450
451 static void
ng_btsocket_hci_raw_savctl(ng_btsocket_hci_raw_pcb_p pcb,struct mbuf ** ctl,struct mbuf * m)452 ng_btsocket_hci_raw_savctl(ng_btsocket_hci_raw_pcb_p pcb, struct mbuf **ctl,
453 struct mbuf *m)
454 {
455 int dir;
456 struct timeval tv;
457
458 mtx_assert(&pcb->pcb_mtx, MA_OWNED);
459
460 if (pcb->flags & NG_BTSOCKET_HCI_RAW_DIRECTION) {
461 dir = (m->m_flags & M_PROTO1)? 1 : 0;
462 *ctl = sbcreatecontrol(&dir, sizeof(dir),
463 SCM_HCI_RAW_DIRECTION, SOL_HCI_RAW, M_NOWAIT);
464 if (*ctl != NULL)
465 ctl = &((*ctl)->m_next);
466 }
467
468 if (pcb->so->so_options & SO_TIMESTAMP) {
469 microtime(&tv);
470 *ctl = sbcreatecontrol(&tv, sizeof(tv), SCM_TIMESTAMP,
471 SOL_SOCKET, M_NOWAIT);
472 if (*ctl != NULL)
473 ctl = &((*ctl)->m_next);
474 }
475 } /* ng_btsocket_hci_raw_savctl */
476
477 /*
478 * Raw HCI sockets data input routine
479 */
480
481 static void
ng_btsocket_hci_raw_data_input(struct mbuf * nam)482 ng_btsocket_hci_raw_data_input(struct mbuf *nam)
483 {
484 ng_btsocket_hci_raw_pcb_p pcb = NULL;
485 struct mbuf *m0 = NULL, *m = NULL;
486 struct sockaddr_hci *sa = NULL;
487
488 m0 = nam->m_next;
489 nam->m_next = NULL;
490
491 KASSERT((nam->m_type == MT_SONAME),
492 ("%s: m_type=%d\n", __func__, nam->m_type));
493 KASSERT((m0->m_flags & M_PKTHDR),
494 ("%s: m_flags=%#x\n", __func__, m0->m_flags));
495
496 sa = mtod(nam, struct sockaddr_hci *);
497
498 mtx_lock(&ng_btsocket_hci_raw_sockets_mtx);
499
500 LIST_FOREACH(pcb, &ng_btsocket_hci_raw_sockets, next) {
501 mtx_lock(&pcb->pcb_mtx);
502
503 /*
504 * If socket was bound then check address and
505 * make sure it matches.
506 */
507
508 if (pcb->addr.hci_node[0] != 0 &&
509 strcmp(sa->hci_node, pcb->addr.hci_node) != 0)
510 goto next;
511
512 /*
513 * Check packet against filters
514 * XXX do we have to call m_pullup() here?
515 */
516
517 if (ng_btsocket_hci_raw_filter(pcb, m0, 1) != 0)
518 goto next;
519
520 /*
521 * Make a copy of the packet, append to the socket's
522 * receive queue and wakeup socket. sbappendaddr()
523 * will check if socket has enough buffer space.
524 */
525
526 m = m_dup(m0, M_NOWAIT);
527 if (m != NULL) {
528 struct mbuf *ctl = NULL;
529
530 ng_btsocket_hci_raw_savctl(pcb, &ctl, m);
531
532 if (sbappendaddr(&pcb->so->so_rcv,
533 (struct sockaddr *) sa, m, ctl))
534 sorwakeup(pcb->so);
535 else {
536 NG_BTSOCKET_HCI_RAW_INFO(
537 "%s: sbappendaddr() failed\n", __func__);
538
539 NG_FREE_M(m);
540 NG_FREE_M(ctl);
541 soroverflow(pcb->so);
542 }
543 }
544 next:
545 mtx_unlock(&pcb->pcb_mtx);
546 }
547
548 mtx_unlock(&ng_btsocket_hci_raw_sockets_mtx);
549
550 NG_FREE_M(nam);
551 NG_FREE_M(m0);
552 } /* ng_btsocket_hci_raw_data_input */
553
554 /*
555 * Raw HCI sockets message input routine
556 */
557
558 static void
ng_btsocket_hci_raw_msg_input(struct ng_mesg * msg)559 ng_btsocket_hci_raw_msg_input(struct ng_mesg *msg)
560 {
561 ng_btsocket_hci_raw_pcb_p pcb = NULL;
562
563 mtx_lock(&ng_btsocket_hci_raw_sockets_mtx);
564
565 LIST_FOREACH(pcb, &ng_btsocket_hci_raw_sockets, next) {
566 mtx_lock(&pcb->pcb_mtx);
567
568 if (msg->header.token == pcb->token) {
569 pcb->msg = msg;
570 wakeup(&pcb->msg);
571
572 mtx_unlock(&pcb->pcb_mtx);
573 mtx_unlock(&ng_btsocket_hci_raw_sockets_mtx);
574
575 return;
576 }
577
578 mtx_unlock(&pcb->pcb_mtx);
579 }
580
581 mtx_unlock(&ng_btsocket_hci_raw_sockets_mtx);
582
583 NG_FREE_MSG(msg); /* checks for != NULL */
584 } /* ng_btsocket_hci_raw_msg_input */
585
586 /*
587 * Raw HCI sockets input routines
588 */
589
590 static void
ng_btsocket_hci_raw_input(void * context,int pending)591 ng_btsocket_hci_raw_input(void *context, int pending)
592 {
593 item_p item = NULL;
594
595 for (;;) {
596 mtx_lock(&ng_btsocket_hci_raw_queue_mtx);
597 NG_BT_ITEMQ_DEQUEUE(&ng_btsocket_hci_raw_queue, item);
598 mtx_unlock(&ng_btsocket_hci_raw_queue_mtx);
599
600 if (item == NULL)
601 break;
602
603 switch(item->el_flags & NGQF_TYPE) {
604 case NGQF_DATA: {
605 struct mbuf *m = NULL;
606
607 NGI_GET_M(item, m);
608 ng_btsocket_hci_raw_data_input(m);
609 } break;
610
611 case NGQF_MESG: {
612 struct ng_mesg *msg = NULL;
613
614 NGI_GET_MSG(item, msg);
615 ng_btsocket_hci_raw_msg_input(msg);
616 } break;
617
618 default:
619 KASSERT(0,
620 ("%s: invalid item type=%ld\n", __func__, (item->el_flags & NGQF_TYPE)));
621 break;
622 }
623
624 NG_FREE_ITEM(item);
625 }
626 } /* ng_btsocket_hci_raw_input */
627
628 /*
629 * Raw HCI sockets output routine
630 */
631
632 static void
ng_btsocket_hci_raw_output(node_p node,hook_p hook,void * arg1,int arg2)633 ng_btsocket_hci_raw_output(node_p node, hook_p hook, void *arg1, int arg2)
634 {
635 struct mbuf *nam = (struct mbuf *) arg1, *m = NULL;
636 struct sockaddr_hci *sa = NULL;
637 int error;
638
639 m = nam->m_next;
640 nam->m_next = NULL;
641
642 KASSERT((nam->m_type == MT_SONAME),
643 ("%s: m_type=%d\n", __func__, nam->m_type));
644 KASSERT((m->m_flags & M_PKTHDR),
645 ("%s: m_flags=%#x\n", __func__, m->m_flags));
646
647 sa = mtod(nam, struct sockaddr_hci *);
648
649 /*
650 * Find downstream hook
651 * XXX For now access node hook list directly. Should be safe because
652 * we used ng_send_fn() and we should have exclusive lock on the node.
653 */
654
655 LIST_FOREACH(hook, &node->nd_hooks, hk_hooks) {
656 if (hook == NULL || NG_HOOK_NOT_VALID(hook) ||
657 NG_NODE_NOT_VALID(NG_PEER_NODE(hook)))
658 continue;
659
660 if (strcmp(sa->hci_node, NG_PEER_NODE_NAME(hook)) == 0) {
661 NG_SEND_DATA_ONLY(error, hook, m); /* sets m to NULL */
662 break;
663 }
664 }
665
666 NG_FREE_M(nam); /* check for != NULL */
667 NG_FREE_M(m);
668 } /* ng_btsocket_hci_raw_output */
669
670 /*
671 * Check frame against security and socket filters.
672 * d (direction bit) == 1 means incoming frame.
673 */
674
675 static int
ng_btsocket_hci_raw_filter(ng_btsocket_hci_raw_pcb_p pcb,struct mbuf * m,int d)676 ng_btsocket_hci_raw_filter(ng_btsocket_hci_raw_pcb_p pcb, struct mbuf *m, int d)
677 {
678 int type, event, opcode;
679
680 mtx_assert(&pcb->pcb_mtx, MA_OWNED);
681
682 switch ((type = *mtod(m, u_int8_t *))) {
683 case NG_HCI_CMD_PKT:
684 if (!(pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED)) {
685 opcode = le16toh(mtod(m, ng_hci_cmd_pkt_t *)->opcode);
686
687 if (!bit_test(
688 ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF(opcode) - 1],
689 NG_HCI_OCF(opcode) - 1))
690 return (EPERM);
691 }
692
693 if (d && !bit_test(pcb->filter.packet_mask, NG_HCI_CMD_PKT - 1))
694 return (EPERM);
695 break;
696
697 case NG_HCI_ACL_DATA_PKT:
698 case NG_HCI_SCO_DATA_PKT:
699 if (!(pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) ||
700 !bit_test(pcb->filter.packet_mask, type - 1) ||
701 !d)
702 return (EPERM);
703 break;
704
705 case NG_HCI_EVENT_PKT:
706 if (!d)
707 return (EINVAL);
708
709 event = mtod(m, ng_hci_event_pkt_t *)->event - 1;
710
711 if (!(pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED))
712 if (!bit_test(ng_btsocket_hci_raw_sec_filter->events, event))
713 return (EPERM);
714
715 if (!bit_test(pcb->filter.event_mask, event))
716 return (EPERM);
717 break;
718
719 default:
720 return (EINVAL);
721 }
722
723 return (0);
724 } /* ng_btsocket_hci_raw_filter */
725
726 /*
727 * Initialize everything
728 */
729
730 static void
ng_btsocket_hci_raw_init(void * arg __unused)731 ng_btsocket_hci_raw_init(void *arg __unused)
732 {
733 bitstr_t *f = NULL;
734 int error = 0;
735
736 ng_btsocket_hci_raw_node = NULL;
737 ng_btsocket_hci_raw_debug_level = NG_BTSOCKET_WARN_LEVEL;
738 ng_btsocket_hci_raw_ioctl_timeout = 5;
739
740 /* Register Netgraph node type */
741 error = ng_newtype(&typestruct);
742 if (error != 0) {
743 NG_BTSOCKET_HCI_RAW_ALERT(
744 "%s: Could not register Netgraph node type, error=%d\n", __func__, error);
745
746 return;
747 }
748
749 /* Create Netgrapg node */
750 error = ng_make_node_common(&typestruct, &ng_btsocket_hci_raw_node);
751 if (error != 0) {
752 NG_BTSOCKET_HCI_RAW_ALERT(
753 "%s: Could not create Netgraph node, error=%d\n", __func__, error);
754
755 ng_btsocket_hci_raw_node = NULL;
756
757 return;
758 }
759
760 error = ng_name_node(ng_btsocket_hci_raw_node,
761 NG_BTSOCKET_HCI_RAW_NODE_TYPE);
762 if (error != 0) {
763 NG_BTSOCKET_HCI_RAW_ALERT(
764 "%s: Could not name Netgraph node, error=%d\n", __func__, error);
765
766 NG_NODE_UNREF(ng_btsocket_hci_raw_node);
767 ng_btsocket_hci_raw_node = NULL;
768
769 return;
770 }
771
772 /* Create input queue */
773 NG_BT_ITEMQ_INIT(&ng_btsocket_hci_raw_queue, 300);
774 mtx_init(&ng_btsocket_hci_raw_queue_mtx,
775 "btsocks_hci_raw_queue_mtx", NULL, MTX_DEF);
776 TASK_INIT(&ng_btsocket_hci_raw_task, 0,
777 ng_btsocket_hci_raw_input, NULL);
778
779 /* Create list of sockets */
780 LIST_INIT(&ng_btsocket_hci_raw_sockets);
781 mtx_init(&ng_btsocket_hci_raw_sockets_mtx,
782 "btsocks_hci_raw_sockets_mtx", NULL, MTX_DEF);
783
784 /* Tokens */
785 ng_btsocket_hci_raw_token = 0;
786 mtx_init(&ng_btsocket_hci_raw_token_mtx,
787 "btsocks_hci_raw_token_mtx", NULL, MTX_DEF);
788
789 /*
790 * Security filter
791 * XXX never free()ed
792 */
793 ng_btsocket_hci_raw_sec_filter =
794 malloc(sizeof(struct ng_btsocket_hci_raw_sec_filter),
795 M_NETGRAPH_BTSOCKET_HCI_RAW, M_NOWAIT|M_ZERO);
796 if (ng_btsocket_hci_raw_sec_filter == NULL) {
797 printf("%s: Could not allocate security filter!\n", __func__);
798 return;
799 }
800
801 /*
802 * XXX How paranoid can we get?
803 *
804 * Initialize security filter. If bit is set in the mask then
805 * unprivileged socket is allowed to send (receive) this command
806 * (event).
807 */
808
809 /* Enable all events */
810 memset(&ng_btsocket_hci_raw_sec_filter->events, 0xff,
811 sizeof(ng_btsocket_hci_raw_sec_filter->events));
812
813 /* Disable some critical events */
814 f = ng_btsocket_hci_raw_sec_filter->events;
815 bit_clear(f, NG_HCI_EVENT_RETURN_LINK_KEYS - 1);
816 bit_clear(f, NG_HCI_EVENT_LINK_KEY_NOTIFICATION - 1);
817 bit_clear(f, NG_HCI_EVENT_VENDOR - 1);
818
819 /* Commands - Link control */
820 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_LINK_CONTROL-1];
821 bit_set(f, NG_HCI_OCF_INQUIRY - 1);
822 bit_set(f, NG_HCI_OCF_INQUIRY_CANCEL - 1);
823 bit_set(f, NG_HCI_OCF_PERIODIC_INQUIRY - 1);
824 bit_set(f, NG_HCI_OCF_EXIT_PERIODIC_INQUIRY - 1);
825 bit_set(f, NG_HCI_OCF_REMOTE_NAME_REQ - 1);
826 bit_set(f, NG_HCI_OCF_READ_REMOTE_FEATURES - 1);
827 bit_set(f, NG_HCI_OCF_READ_REMOTE_VER_INFO - 1);
828 bit_set(f, NG_HCI_OCF_READ_CLOCK_OFFSET - 1);
829
830 /* Commands - Link policy */
831 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_LINK_POLICY-1];
832 bit_set(f, NG_HCI_OCF_ROLE_DISCOVERY - 1);
833 bit_set(f, NG_HCI_OCF_READ_LINK_POLICY_SETTINGS - 1);
834
835 /* Commands - Host controller and baseband */
836 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_HC_BASEBAND-1];
837 bit_set(f, NG_HCI_OCF_READ_PIN_TYPE - 1);
838 bit_set(f, NG_HCI_OCF_READ_LOCAL_NAME - 1);
839 bit_set(f, NG_HCI_OCF_READ_CON_ACCEPT_TIMO - 1);
840 bit_set(f, NG_HCI_OCF_READ_PAGE_TIMO - 1);
841 bit_set(f, NG_HCI_OCF_READ_SCAN_ENABLE - 1);
842 bit_set(f, NG_HCI_OCF_READ_PAGE_SCAN_ACTIVITY - 1);
843 bit_set(f, NG_HCI_OCF_READ_INQUIRY_SCAN_ACTIVITY - 1);
844 bit_set(f, NG_HCI_OCF_READ_AUTH_ENABLE - 1);
845 bit_set(f, NG_HCI_OCF_READ_ENCRYPTION_MODE - 1);
846 bit_set(f, NG_HCI_OCF_READ_UNIT_CLASS - 1);
847 bit_set(f, NG_HCI_OCF_READ_VOICE_SETTINGS - 1);
848 bit_set(f, NG_HCI_OCF_READ_AUTO_FLUSH_TIMO - 1);
849 bit_set(f, NG_HCI_OCF_READ_NUM_BROADCAST_RETRANS - 1);
850 bit_set(f, NG_HCI_OCF_READ_HOLD_MODE_ACTIVITY - 1);
851 bit_set(f, NG_HCI_OCF_READ_XMIT_LEVEL - 1);
852 bit_set(f, NG_HCI_OCF_READ_SCO_FLOW_CONTROL - 1);
853 bit_set(f, NG_HCI_OCF_READ_LINK_SUPERVISION_TIMO - 1);
854 bit_set(f, NG_HCI_OCF_READ_SUPPORTED_IAC_NUM - 1);
855 bit_set(f, NG_HCI_OCF_READ_IAC_LAP - 1);
856 bit_set(f, NG_HCI_OCF_READ_PAGE_SCAN_PERIOD - 1);
857 bit_set(f, NG_HCI_OCF_READ_PAGE_SCAN - 1);
858 bit_set(f, NG_HCI_OCF_READ_LE_HOST_SUPPORTED -1);
859
860 /* Commands - Informational */
861 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_INFO - 1];
862 bit_set(f, NG_HCI_OCF_READ_LOCAL_VER - 1);
863 bit_set(f, NG_HCI_OCF_READ_LOCAL_FEATURES - 1);
864 bit_set(f, NG_HCI_OCF_READ_BUFFER_SIZE - 1);
865 bit_set(f, NG_HCI_OCF_READ_COUNTRY_CODE - 1);
866 bit_set(f, NG_HCI_OCF_READ_BDADDR - 1);
867
868 /* Commands - Status */
869 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_STATUS - 1];
870 bit_set(f, NG_HCI_OCF_READ_FAILED_CONTACT_CNTR - 1);
871 bit_set(f, NG_HCI_OCF_GET_LINK_QUALITY - 1);
872 bit_set(f, NG_HCI_OCF_READ_RSSI - 1);
873
874 /* Commands - Testing */
875 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_TESTING - 1];
876 bit_set(f, NG_HCI_OCF_READ_LOOPBACK_MODE - 1);
877 /*Commands - LE*/
878 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_LE -1];
879 bit_set(f, NG_HCI_OCF_LE_SET_SCAN_ENABLE - 1);
880 bit_set(f, NG_HCI_OCF_LE_SET_SCAN_PARAMETERS - 1);
881 bit_set(f, NG_HCI_OCF_LE_READ_LOCAL_SUPPORTED_FEATURES - 1);
882 bit_set(f, NG_HCI_OCF_LE_READ_BUFFER_SIZE - 1);
883 bit_set(f, NG_HCI_OCF_LE_READ_WHITE_LIST_SIZE - 1);
884
885 } /* ng_btsocket_hci_raw_init */
886 SYSINIT(ng_btsocket_hci_raw_init, SI_SUB_PROTO_DOMAIN, SI_ORDER_THIRD,
887 ng_btsocket_hci_raw_init, NULL);
888
889 /*
890 * Abort connection on socket
891 */
892
893 void
ng_btsocket_hci_raw_abort(struct socket * so)894 ng_btsocket_hci_raw_abort(struct socket *so)
895 {
896 } /* ng_btsocket_hci_raw_abort */
897
898 void
ng_btsocket_hci_raw_close(struct socket * so)899 ng_btsocket_hci_raw_close(struct socket *so)
900 {
901 } /* ng_btsocket_hci_raw_close */
902
903 /*
904 * Create new raw HCI socket
905 */
906
907 int
ng_btsocket_hci_raw_attach(struct socket * so,int proto,struct thread * td)908 ng_btsocket_hci_raw_attach(struct socket *so, int proto, struct thread *td)
909 {
910 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so);
911 int error = 0;
912
913 if (pcb != NULL)
914 return (EISCONN);
915
916 if (ng_btsocket_hci_raw_node == NULL)
917 return (EPROTONOSUPPORT);
918 if (proto != BLUETOOTH_PROTO_HCI)
919 return (EPROTONOSUPPORT);
920 if (so->so_type != SOCK_RAW)
921 return (ESOCKTNOSUPPORT);
922
923 error = soreserve(so, NG_BTSOCKET_HCI_RAW_SENDSPACE,
924 NG_BTSOCKET_HCI_RAW_RECVSPACE);
925 if (error != 0)
926 return (error);
927
928 pcb = malloc(sizeof(*pcb),
929 M_NETGRAPH_BTSOCKET_HCI_RAW, M_NOWAIT|M_ZERO);
930 if (pcb == NULL)
931 return (ENOMEM);
932
933 so->so_pcb = (caddr_t) pcb;
934 pcb->so = so;
935
936 if (priv_check(td, PRIV_NETBLUETOOTH_RAW) == 0)
937 pcb->flags |= NG_BTSOCKET_HCI_RAW_PRIVILEGED;
938
939 /*
940 * Set default socket filter. By default socket only accepts HCI
941 * Command_Complete and Command_Status event packets.
942 */
943
944 bit_set(pcb->filter.event_mask, NG_HCI_EVENT_COMMAND_COMPL - 1);
945 bit_set(pcb->filter.event_mask, NG_HCI_EVENT_COMMAND_STATUS - 1);
946
947 mtx_init(&pcb->pcb_mtx, "btsocks_hci_raw_pcb_mtx", NULL, MTX_DEF);
948
949 mtx_lock(&ng_btsocket_hci_raw_sockets_mtx);
950 LIST_INSERT_HEAD(&ng_btsocket_hci_raw_sockets, pcb, next);
951 mtx_unlock(&ng_btsocket_hci_raw_sockets_mtx);
952
953 return (0);
954 } /* ng_btsocket_hci_raw_attach */
955
956 /*
957 * Bind raw HCI socket
958 */
959
960 int
ng_btsocket_hci_raw_bind(struct socket * so,struct sockaddr * nam,struct thread * td)961 ng_btsocket_hci_raw_bind(struct socket *so, struct sockaddr *nam,
962 struct thread *td)
963 {
964 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so);
965 struct sockaddr_hci *sa = (struct sockaddr_hci *) nam;
966
967 if (pcb == NULL)
968 return (EINVAL);
969 if (ng_btsocket_hci_raw_node == NULL)
970 return (EINVAL);
971
972 if (sa == NULL)
973 return (EINVAL);
974 if (sa->hci_family != AF_BLUETOOTH)
975 return (EAFNOSUPPORT);
976 if (sa->hci_len != sizeof(*sa))
977 return (EINVAL);
978 if (sa->hci_node[0] == 0)
979 return (EINVAL);
980
981 mtx_lock(&pcb->pcb_mtx);
982 bcopy(sa, &pcb->addr, sizeof(pcb->addr));
983 mtx_unlock(&pcb->pcb_mtx);
984
985 return (0);
986 } /* ng_btsocket_hci_raw_bind */
987
988 /*
989 * Connect raw HCI socket
990 */
991
992 int
ng_btsocket_hci_raw_connect(struct socket * so,struct sockaddr * nam,struct thread * td)993 ng_btsocket_hci_raw_connect(struct socket *so, struct sockaddr *nam,
994 struct thread *td)
995 {
996 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so);
997 struct sockaddr_hci *sa = (struct sockaddr_hci *) nam;
998
999 if (pcb == NULL)
1000 return (EINVAL);
1001 if (ng_btsocket_hci_raw_node == NULL)
1002 return (EINVAL);
1003
1004 if (sa == NULL)
1005 return (EINVAL);
1006 if (sa->hci_family != AF_BLUETOOTH)
1007 return (EAFNOSUPPORT);
1008 if (sa->hci_len != sizeof(*sa))
1009 return (EINVAL);
1010 if (sa->hci_node[0] == 0)
1011 return (EDESTADDRREQ);
1012
1013 mtx_lock(&pcb->pcb_mtx);
1014
1015 if (bcmp(sa, &pcb->addr, sizeof(pcb->addr)) != 0) {
1016 mtx_unlock(&pcb->pcb_mtx);
1017 return (EADDRNOTAVAIL);
1018 }
1019
1020 soisconnected(so);
1021
1022 mtx_unlock(&pcb->pcb_mtx);
1023
1024 return (0);
1025 } /* ng_btsocket_hci_raw_connect */
1026
1027 /*
1028 * Process ioctl on socket
1029 */
1030
1031 int
ng_btsocket_hci_raw_control(struct socket * so,u_long cmd,void * data,struct ifnet * ifp,struct thread * td)1032 ng_btsocket_hci_raw_control(struct socket *so, u_long cmd, void *data,
1033 struct ifnet *ifp, struct thread *td)
1034 {
1035 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so);
1036 char path[NG_NODESIZ + 1];
1037 struct ng_mesg *msg = NULL;
1038 int error = 0;
1039
1040 if (pcb == NULL)
1041 return (EINVAL);
1042 if (ng_btsocket_hci_raw_node == NULL)
1043 return (EINVAL);
1044
1045 mtx_lock(&pcb->pcb_mtx);
1046
1047 /* Check if we have device name */
1048 if (pcb->addr.hci_node[0] == 0) {
1049 mtx_unlock(&pcb->pcb_mtx);
1050 return (EHOSTUNREACH);
1051 }
1052
1053 /* Check if we have pending ioctl() */
1054 if (pcb->token != 0) {
1055 mtx_unlock(&pcb->pcb_mtx);
1056 return (EBUSY);
1057 }
1058
1059 snprintf(path, sizeof(path), "%s:", pcb->addr.hci_node);
1060
1061 switch (cmd) {
1062 case SIOC_HCI_RAW_NODE_GET_STATE: {
1063 struct ng_btsocket_hci_raw_node_state *p =
1064 (struct ng_btsocket_hci_raw_node_state *) data;
1065
1066 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path,
1067 NGM_HCI_NODE_GET_STATE,
1068 &p->state, sizeof(p->state));
1069 } break;
1070
1071 case SIOC_HCI_RAW_NODE_INIT:
1072 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED)
1073 error = ng_btsocket_hci_raw_send_ngmsg(path,
1074 NGM_HCI_NODE_INIT, NULL, 0);
1075 else
1076 error = EPERM;
1077 break;
1078
1079 case SIOC_HCI_RAW_NODE_GET_DEBUG: {
1080 struct ng_btsocket_hci_raw_node_debug *p =
1081 (struct ng_btsocket_hci_raw_node_debug *) data;
1082
1083 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path,
1084 NGM_HCI_NODE_GET_DEBUG,
1085 &p->debug, sizeof(p->debug));
1086 } break;
1087
1088 case SIOC_HCI_RAW_NODE_SET_DEBUG: {
1089 struct ng_btsocket_hci_raw_node_debug *p =
1090 (struct ng_btsocket_hci_raw_node_debug *) data;
1091
1092 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED)
1093 error = ng_btsocket_hci_raw_send_ngmsg(path,
1094 NGM_HCI_NODE_SET_DEBUG, &p->debug,
1095 sizeof(p->debug));
1096 else
1097 error = EPERM;
1098 } break;
1099
1100 case SIOC_HCI_RAW_NODE_GET_BUFFER: {
1101 struct ng_btsocket_hci_raw_node_buffer *p =
1102 (struct ng_btsocket_hci_raw_node_buffer *) data;
1103
1104 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path,
1105 NGM_HCI_NODE_GET_BUFFER,
1106 &p->buffer, sizeof(p->buffer));
1107 } break;
1108
1109 case SIOC_HCI_RAW_NODE_GET_BDADDR: {
1110 struct ng_btsocket_hci_raw_node_bdaddr *p =
1111 (struct ng_btsocket_hci_raw_node_bdaddr *) data;
1112
1113 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path,
1114 NGM_HCI_NODE_GET_BDADDR,
1115 &p->bdaddr, sizeof(p->bdaddr));
1116 } break;
1117
1118 case SIOC_HCI_RAW_NODE_GET_FEATURES: {
1119 struct ng_btsocket_hci_raw_node_features *p =
1120 (struct ng_btsocket_hci_raw_node_features *) data;
1121
1122 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path,
1123 NGM_HCI_NODE_GET_FEATURES,
1124 &p->features, sizeof(p->features));
1125 } break;
1126
1127 case SIOC_HCI_RAW_NODE_GET_STAT: {
1128 struct ng_btsocket_hci_raw_node_stat *p =
1129 (struct ng_btsocket_hci_raw_node_stat *) data;
1130
1131 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path,
1132 NGM_HCI_NODE_GET_STAT,
1133 &p->stat, sizeof(p->stat));
1134 } break;
1135
1136 case SIOC_HCI_RAW_NODE_RESET_STAT:
1137 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED)
1138 error = ng_btsocket_hci_raw_send_ngmsg(path,
1139 NGM_HCI_NODE_RESET_STAT, NULL, 0);
1140 else
1141 error = EPERM;
1142 break;
1143
1144 case SIOC_HCI_RAW_NODE_FLUSH_NEIGHBOR_CACHE:
1145 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED)
1146 error = ng_btsocket_hci_raw_send_ngmsg(path,
1147 NGM_HCI_NODE_FLUSH_NEIGHBOR_CACHE,
1148 NULL, 0);
1149 else
1150 error = EPERM;
1151 break;
1152
1153 case SIOC_HCI_RAW_NODE_GET_NEIGHBOR_CACHE: {
1154 struct ng_btsocket_hci_raw_node_neighbor_cache *p =
1155 (struct ng_btsocket_hci_raw_node_neighbor_cache *) data;
1156 ng_hci_node_get_neighbor_cache_ep *p1 = NULL;
1157 ng_hci_node_neighbor_cache_entry_ep *p2 = NULL;
1158
1159 if (p->num_entries <= 0 ||
1160 p->num_entries > NG_HCI_MAX_NEIGHBOR_NUM ||
1161 p->entries == NULL) {
1162 mtx_unlock(&pcb->pcb_mtx);
1163 return (EINVAL);
1164 }
1165
1166 NG_MKMESSAGE(msg, NGM_HCI_COOKIE,
1167 NGM_HCI_NODE_GET_NEIGHBOR_CACHE, 0, M_NOWAIT);
1168 if (msg == NULL) {
1169 mtx_unlock(&pcb->pcb_mtx);
1170 return (ENOMEM);
1171 }
1172 ng_btsocket_hci_raw_get_token(&msg->header.token);
1173 pcb->token = msg->header.token;
1174 pcb->msg = NULL;
1175
1176 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, path, 0);
1177 if (error != 0) {
1178 pcb->token = 0;
1179 mtx_unlock(&pcb->pcb_mtx);
1180 return (error);
1181 }
1182
1183 error = msleep(&pcb->msg, &pcb->pcb_mtx,
1184 PZERO|PCATCH, "hcictl",
1185 ng_btsocket_hci_raw_ioctl_timeout * hz);
1186 pcb->token = 0;
1187
1188 if (error != 0) {
1189 mtx_unlock(&pcb->pcb_mtx);
1190 return (error);
1191 }
1192
1193 msg = pcb->msg;
1194 pcb->msg = NULL;
1195
1196 mtx_unlock(&pcb->pcb_mtx);
1197
1198 if (msg != NULL &&
1199 msg->header.cmd == NGM_HCI_NODE_GET_NEIGHBOR_CACHE) {
1200 /* Return data back to user space */
1201 p1 = (ng_hci_node_get_neighbor_cache_ep *)(msg->data);
1202 p2 = (ng_hci_node_neighbor_cache_entry_ep *)(p1 + 1);
1203
1204 p->num_entries = min(p->num_entries, p1->num_entries);
1205 if (p->num_entries > 0)
1206 error = copyout((caddr_t) p2,
1207 (caddr_t) p->entries,
1208 p->num_entries * sizeof(*p2));
1209 } else
1210 error = EINVAL;
1211
1212 NG_FREE_MSG(msg); /* checks for != NULL */
1213 return (error);
1214 } /* NOTREACHED */
1215
1216 case SIOC_HCI_RAW_NODE_GET_CON_LIST: {
1217 struct ng_btsocket_hci_raw_con_list *p =
1218 (struct ng_btsocket_hci_raw_con_list *) data;
1219 ng_hci_node_con_list_ep *p1 = NULL;
1220 ng_hci_node_con_ep *p2 = NULL;
1221
1222 if (p->num_connections == 0 ||
1223 p->num_connections > NG_HCI_MAX_CON_NUM ||
1224 p->connections == NULL) {
1225 mtx_unlock(&pcb->pcb_mtx);
1226 return (EINVAL);
1227 }
1228
1229 NG_MKMESSAGE(msg, NGM_HCI_COOKIE, NGM_HCI_NODE_GET_CON_LIST,
1230 0, M_NOWAIT);
1231 if (msg == NULL) {
1232 mtx_unlock(&pcb->pcb_mtx);
1233 return (ENOMEM);
1234 }
1235 ng_btsocket_hci_raw_get_token(&msg->header.token);
1236 pcb->token = msg->header.token;
1237 pcb->msg = NULL;
1238
1239 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, path, 0);
1240 if (error != 0) {
1241 pcb->token = 0;
1242 mtx_unlock(&pcb->pcb_mtx);
1243 return (error);
1244 }
1245
1246 error = msleep(&pcb->msg, &pcb->pcb_mtx,
1247 PZERO|PCATCH, "hcictl",
1248 ng_btsocket_hci_raw_ioctl_timeout * hz);
1249 pcb->token = 0;
1250
1251 if (error != 0) {
1252 mtx_unlock(&pcb->pcb_mtx);
1253 return (error);
1254 }
1255
1256 msg = pcb->msg;
1257 pcb->msg = NULL;
1258
1259 mtx_unlock(&pcb->pcb_mtx);
1260
1261 if (msg != NULL &&
1262 msg->header.cmd == NGM_HCI_NODE_GET_CON_LIST) {
1263 /* Return data back to user space */
1264 p1 = (ng_hci_node_con_list_ep *)(msg->data);
1265 p2 = (ng_hci_node_con_ep *)(p1 + 1);
1266
1267 p->num_connections = min(p->num_connections,
1268 p1->num_connections);
1269 if (p->num_connections > 0)
1270 error = copyout((caddr_t) p2,
1271 (caddr_t) p->connections,
1272 p->num_connections * sizeof(*p2));
1273 } else
1274 error = EINVAL;
1275
1276 NG_FREE_MSG(msg); /* checks for != NULL */
1277 return (error);
1278 } /* NOTREACHED */
1279
1280 case SIOC_HCI_RAW_NODE_GET_LINK_POLICY_MASK: {
1281 struct ng_btsocket_hci_raw_node_link_policy_mask *p =
1282 (struct ng_btsocket_hci_raw_node_link_policy_mask *)
1283 data;
1284
1285 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path,
1286 NGM_HCI_NODE_GET_LINK_POLICY_SETTINGS_MASK,
1287 &p->policy_mask, sizeof(p->policy_mask));
1288 } break;
1289
1290 case SIOC_HCI_RAW_NODE_SET_LINK_POLICY_MASK: {
1291 struct ng_btsocket_hci_raw_node_link_policy_mask *p =
1292 (struct ng_btsocket_hci_raw_node_link_policy_mask *)
1293 data;
1294
1295 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED)
1296 error = ng_btsocket_hci_raw_send_ngmsg(path,
1297 NGM_HCI_NODE_SET_LINK_POLICY_SETTINGS_MASK,
1298 &p->policy_mask,
1299 sizeof(p->policy_mask));
1300 else
1301 error = EPERM;
1302 } break;
1303
1304 case SIOC_HCI_RAW_NODE_GET_PACKET_MASK: {
1305 struct ng_btsocket_hci_raw_node_packet_mask *p =
1306 (struct ng_btsocket_hci_raw_node_packet_mask *) data;
1307
1308 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path,
1309 NGM_HCI_NODE_GET_PACKET_MASK,
1310 &p->packet_mask, sizeof(p->packet_mask));
1311 } break;
1312
1313 case SIOC_HCI_RAW_NODE_SET_PACKET_MASK: {
1314 struct ng_btsocket_hci_raw_node_packet_mask *p =
1315 (struct ng_btsocket_hci_raw_node_packet_mask *) data;
1316
1317 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED)
1318 error = ng_btsocket_hci_raw_send_ngmsg(path,
1319 NGM_HCI_NODE_SET_PACKET_MASK,
1320 &p->packet_mask,
1321 sizeof(p->packet_mask));
1322 else
1323 error = EPERM;
1324 } break;
1325
1326 case SIOC_HCI_RAW_NODE_GET_ROLE_SWITCH: {
1327 struct ng_btsocket_hci_raw_node_role_switch *p =
1328 (struct ng_btsocket_hci_raw_node_role_switch *) data;
1329
1330 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path,
1331 NGM_HCI_NODE_GET_ROLE_SWITCH,
1332 &p->role_switch, sizeof(p->role_switch));
1333 } break;
1334
1335 case SIOC_HCI_RAW_NODE_SET_ROLE_SWITCH: {
1336 struct ng_btsocket_hci_raw_node_role_switch *p =
1337 (struct ng_btsocket_hci_raw_node_role_switch *) data;
1338
1339 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED)
1340 error = ng_btsocket_hci_raw_send_ngmsg(path,
1341 NGM_HCI_NODE_SET_ROLE_SWITCH,
1342 &p->role_switch,
1343 sizeof(p->role_switch));
1344 else
1345 error = EPERM;
1346 } break;
1347
1348 case SIOC_HCI_RAW_NODE_LIST_NAMES: {
1349 struct ng_btsocket_hci_raw_node_list_names *nl =
1350 (struct ng_btsocket_hci_raw_node_list_names *) data;
1351 struct nodeinfo *ni = nl->names;
1352
1353 if (nl->num_names == 0) {
1354 mtx_unlock(&pcb->pcb_mtx);
1355 return (EINVAL);
1356 }
1357
1358 NG_MKMESSAGE(msg, NGM_GENERIC_COOKIE, NGM_LISTNAMES,
1359 0, M_NOWAIT);
1360 if (msg == NULL) {
1361 mtx_unlock(&pcb->pcb_mtx);
1362 return (ENOMEM);
1363 }
1364 ng_btsocket_hci_raw_get_token(&msg->header.token);
1365 pcb->token = msg->header.token;
1366 pcb->msg = NULL;
1367
1368 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, ".:", 0);
1369 if (error != 0) {
1370 pcb->token = 0;
1371 mtx_unlock(&pcb->pcb_mtx);
1372 return (error);
1373 }
1374
1375 error = msleep(&pcb->msg, &pcb->pcb_mtx,
1376 PZERO|PCATCH, "hcictl",
1377 ng_btsocket_hci_raw_ioctl_timeout * hz);
1378 pcb->token = 0;
1379
1380 if (error != 0) {
1381 mtx_unlock(&pcb->pcb_mtx);
1382 return (error);
1383 }
1384
1385 msg = pcb->msg;
1386 pcb->msg = NULL;
1387
1388 mtx_unlock(&pcb->pcb_mtx);
1389
1390 if (msg != NULL && msg->header.cmd == NGM_LISTNAMES) {
1391 /* Return data back to user space */
1392 struct namelist *nl1 = (struct namelist *) msg->data;
1393 struct nodeinfo *ni1 = &nl1->nodeinfo[0];
1394
1395 while (nl->num_names > 0 && nl1->numnames > 0) {
1396 if (strcmp(ni1->type, NG_HCI_NODE_TYPE) == 0) {
1397 error = copyout((caddr_t) ni1,
1398 (caddr_t) ni,
1399 sizeof(*ni));
1400 if (error != 0)
1401 break;
1402
1403 nl->num_names --;
1404 ni ++;
1405 }
1406
1407 nl1->numnames --;
1408 ni1 ++;
1409 }
1410
1411 nl->num_names = ni - nl->names;
1412 } else
1413 error = EINVAL;
1414
1415 NG_FREE_MSG(msg); /* checks for != NULL */
1416 return (error);
1417 } /* NOTREACHED */
1418
1419 default:
1420 error = EINVAL;
1421 break;
1422 }
1423
1424 mtx_unlock(&pcb->pcb_mtx);
1425
1426 return (error);
1427 } /* ng_btsocket_hci_raw_control */
1428
1429 /*
1430 * Process getsockopt/setsockopt system calls
1431 */
1432
1433 int
ng_btsocket_hci_raw_ctloutput(struct socket * so,struct sockopt * sopt)1434 ng_btsocket_hci_raw_ctloutput(struct socket *so, struct sockopt *sopt)
1435 {
1436 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so);
1437 struct ng_btsocket_hci_raw_filter filter;
1438 int error = 0, dir;
1439
1440 if (pcb == NULL)
1441 return (EINVAL);
1442 if (ng_btsocket_hci_raw_node == NULL)
1443 return (EINVAL);
1444
1445 if (sopt->sopt_level != SOL_HCI_RAW)
1446 return (0);
1447
1448 mtx_lock(&pcb->pcb_mtx);
1449
1450 switch (sopt->sopt_dir) {
1451 case SOPT_GET:
1452 switch (sopt->sopt_name) {
1453 case SO_HCI_RAW_FILTER:
1454 error = sooptcopyout(sopt, &pcb->filter,
1455 sizeof(pcb->filter));
1456 break;
1457
1458 case SO_HCI_RAW_DIRECTION:
1459 dir = (pcb->flags & NG_BTSOCKET_HCI_RAW_DIRECTION)?1:0;
1460 error = sooptcopyout(sopt, &dir, sizeof(dir));
1461 break;
1462
1463 default:
1464 error = EINVAL;
1465 break;
1466 }
1467 break;
1468
1469 case SOPT_SET:
1470 switch (sopt->sopt_name) {
1471 case SO_HCI_RAW_FILTER:
1472 error = sooptcopyin(sopt, &filter, sizeof(filter),
1473 sizeof(filter));
1474 if (error == 0)
1475 bcopy(&filter, &pcb->filter,
1476 sizeof(pcb->filter));
1477 break;
1478
1479 case SO_HCI_RAW_DIRECTION:
1480 error = sooptcopyin(sopt, &dir, sizeof(dir),
1481 sizeof(dir));
1482 if (error != 0)
1483 break;
1484
1485 if (dir)
1486 pcb->flags |= NG_BTSOCKET_HCI_RAW_DIRECTION;
1487 else
1488 pcb->flags &= ~NG_BTSOCKET_HCI_RAW_DIRECTION;
1489 break;
1490
1491 default:
1492 error = EINVAL;
1493 break;
1494 }
1495 break;
1496
1497 default:
1498 error = EINVAL;
1499 break;
1500 }
1501
1502 mtx_unlock(&pcb->pcb_mtx);
1503
1504 return (error);
1505 } /* ng_btsocket_hci_raw_ctloutput */
1506
1507 /*
1508 * Detach raw HCI socket
1509 */
1510
1511 void
ng_btsocket_hci_raw_detach(struct socket * so)1512 ng_btsocket_hci_raw_detach(struct socket *so)
1513 {
1514 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so);
1515
1516 KASSERT(pcb != NULL, ("ng_btsocket_hci_raw_detach: pcb == NULL"));
1517
1518 if (ng_btsocket_hci_raw_node == NULL)
1519 return;
1520
1521 mtx_lock(&ng_btsocket_hci_raw_sockets_mtx);
1522 mtx_lock(&pcb->pcb_mtx);
1523
1524 LIST_REMOVE(pcb, next);
1525
1526 mtx_unlock(&pcb->pcb_mtx);
1527 mtx_unlock(&ng_btsocket_hci_raw_sockets_mtx);
1528
1529 mtx_destroy(&pcb->pcb_mtx);
1530
1531 bzero(pcb, sizeof(*pcb));
1532 free(pcb, M_NETGRAPH_BTSOCKET_HCI_RAW);
1533
1534 so->so_pcb = NULL;
1535 } /* ng_btsocket_hci_raw_detach */
1536
1537 /*
1538 * Disconnect raw HCI socket
1539 */
1540
1541 int
ng_btsocket_hci_raw_disconnect(struct socket * so)1542 ng_btsocket_hci_raw_disconnect(struct socket *so)
1543 {
1544 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so);
1545
1546 if (pcb == NULL)
1547 return (EINVAL);
1548 if (ng_btsocket_hci_raw_node == NULL)
1549 return (EINVAL);
1550
1551 mtx_lock(&pcb->pcb_mtx);
1552 soisdisconnected(so);
1553 mtx_unlock(&pcb->pcb_mtx);
1554
1555 return (0);
1556 } /* ng_btsocket_hci_raw_disconnect */
1557
1558 /*
1559 * Send data
1560 */
1561
1562 int
ng_btsocket_hci_raw_send(struct socket * so,int flags,struct mbuf * m,struct sockaddr * sa,struct mbuf * control,struct thread * td)1563 ng_btsocket_hci_raw_send(struct socket *so, int flags, struct mbuf *m,
1564 struct sockaddr *sa, struct mbuf *control, struct thread *td)
1565 {
1566 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so);
1567 struct mbuf *nam = NULL;
1568 int error = 0;
1569
1570 if (ng_btsocket_hci_raw_node == NULL) {
1571 error = ENETDOWN;
1572 goto drop;
1573 }
1574 if (pcb == NULL) {
1575 error = EINVAL;
1576 goto drop;
1577 }
1578 if (control != NULL) {
1579 error = EINVAL;
1580 goto drop;
1581 }
1582
1583 if (m->m_pkthdr.len < sizeof(ng_hci_cmd_pkt_t) ||
1584 m->m_pkthdr.len > sizeof(ng_hci_cmd_pkt_t) + NG_HCI_CMD_PKT_SIZE) {
1585 error = EMSGSIZE;
1586 goto drop;
1587 }
1588
1589 if (m->m_len < sizeof(ng_hci_cmd_pkt_t)) {
1590 if ((m = m_pullup(m, sizeof(ng_hci_cmd_pkt_t))) == NULL) {
1591 error = ENOBUFS;
1592 goto drop;
1593 }
1594 }
1595 if (*mtod(m, u_int8_t *) != NG_HCI_CMD_PKT) {
1596 error = ENOTSUP;
1597 goto drop;
1598 }
1599
1600 if (sa != NULL) {
1601 if (sa->sa_family != AF_BLUETOOTH) {
1602 error = EAFNOSUPPORT;
1603 goto drop;
1604 }
1605 if (sa->sa_len != sizeof(struct sockaddr_hci)) {
1606 error = EINVAL;
1607 goto drop;
1608 }
1609 }
1610
1611 mtx_lock(&pcb->pcb_mtx);
1612
1613 error = ng_btsocket_hci_raw_filter(pcb, m, 0);
1614 if (error != 0) {
1615 mtx_unlock(&pcb->pcb_mtx);
1616 goto drop;
1617 }
1618
1619 if (sa == NULL) {
1620 if (pcb->addr.hci_node[0] == 0) {
1621 mtx_unlock(&pcb->pcb_mtx);
1622 error = EDESTADDRREQ;
1623 goto drop;
1624 }
1625
1626 sa = (struct sockaddr *) &pcb->addr;
1627 }
1628
1629 MGET(nam, M_NOWAIT, MT_SONAME);
1630 if (nam == NULL) {
1631 mtx_unlock(&pcb->pcb_mtx);
1632 error = ENOBUFS;
1633 goto drop;
1634 }
1635
1636 nam->m_len = sizeof(struct sockaddr_hci);
1637 bcopy(sa,mtod(nam, struct sockaddr_hci *),sizeof(struct sockaddr_hci));
1638
1639 nam->m_next = m;
1640 m = NULL;
1641
1642 mtx_unlock(&pcb->pcb_mtx);
1643
1644 return (ng_send_fn(ng_btsocket_hci_raw_node, NULL,
1645 ng_btsocket_hci_raw_output, nam, 0));
1646 drop:
1647 NG_FREE_M(control); /* NG_FREE_M checks for != NULL */
1648 NG_FREE_M(nam);
1649 NG_FREE_M(m);
1650
1651 return (error);
1652 } /* ng_btsocket_hci_raw_send */
1653
1654 /*
1655 * Get socket address
1656 */
1657
1658 int
ng_btsocket_hci_raw_sockaddr(struct socket * so,struct sockaddr * sa)1659 ng_btsocket_hci_raw_sockaddr(struct socket *so, struct sockaddr *sa)
1660 {
1661 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so);
1662 struct sockaddr_hci *hci = (struct sockaddr_hci *)sa;
1663
1664 if (pcb == NULL)
1665 return (EINVAL);
1666 if (ng_btsocket_hci_raw_node == NULL)
1667 return (EINVAL);
1668
1669 *hci = (struct sockaddr_hci ){
1670 .hci_len = sizeof(struct sockaddr_hci),
1671 .hci_family = AF_BLUETOOTH,
1672 };
1673
1674 mtx_lock(&pcb->pcb_mtx);
1675 strlcpy(hci->hci_node, pcb->addr.hci_node, sizeof(hci->hci_node));
1676 mtx_unlock(&pcb->pcb_mtx);
1677
1678 return (0);
1679 }
1680