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