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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 sizeof(ng_btsocket_hci_raw_sec_filter->events[0])); 813 814 /* Disable some critical events */ 815 f = ng_btsocket_hci_raw_sec_filter->events; 816 bit_clear(f, NG_HCI_EVENT_RETURN_LINK_KEYS - 1); 817 bit_clear(f, NG_HCI_EVENT_LINK_KEY_NOTIFICATION - 1); 818 bit_clear(f, NG_HCI_EVENT_VENDOR - 1); 819 820 /* Commands - Link control */ 821 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_LINK_CONTROL-1]; 822 bit_set(f, NG_HCI_OCF_INQUIRY - 1); 823 bit_set(f, NG_HCI_OCF_INQUIRY_CANCEL - 1); 824 bit_set(f, NG_HCI_OCF_PERIODIC_INQUIRY - 1); 825 bit_set(f, NG_HCI_OCF_EXIT_PERIODIC_INQUIRY - 1); 826 bit_set(f, NG_HCI_OCF_REMOTE_NAME_REQ - 1); 827 bit_set(f, NG_HCI_OCF_READ_REMOTE_FEATURES - 1); 828 bit_set(f, NG_HCI_OCF_READ_REMOTE_VER_INFO - 1); 829 bit_set(f, NG_HCI_OCF_READ_CLOCK_OFFSET - 1); 830 831 /* Commands - Link policy */ 832 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_LINK_POLICY-1]; 833 bit_set(f, NG_HCI_OCF_ROLE_DISCOVERY - 1); 834 bit_set(f, NG_HCI_OCF_READ_LINK_POLICY_SETTINGS - 1); 835 836 /* Commands - Host controller and baseband */ 837 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_HC_BASEBAND-1]; 838 bit_set(f, NG_HCI_OCF_READ_PIN_TYPE - 1); 839 bit_set(f, NG_HCI_OCF_READ_LOCAL_NAME - 1); 840 bit_set(f, NG_HCI_OCF_READ_CON_ACCEPT_TIMO - 1); 841 bit_set(f, NG_HCI_OCF_READ_PAGE_TIMO - 1); 842 bit_set(f, NG_HCI_OCF_READ_SCAN_ENABLE - 1); 843 bit_set(f, NG_HCI_OCF_READ_PAGE_SCAN_ACTIVITY - 1); 844 bit_set(f, NG_HCI_OCF_READ_INQUIRY_SCAN_ACTIVITY - 1); 845 bit_set(f, NG_HCI_OCF_READ_AUTH_ENABLE - 1); 846 bit_set(f, NG_HCI_OCF_READ_ENCRYPTION_MODE - 1); 847 bit_set(f, NG_HCI_OCF_READ_UNIT_CLASS - 1); 848 bit_set(f, NG_HCI_OCF_READ_VOICE_SETTINGS - 1); 849 bit_set(f, NG_HCI_OCF_READ_AUTO_FLUSH_TIMO - 1); 850 bit_set(f, NG_HCI_OCF_READ_NUM_BROADCAST_RETRANS - 1); 851 bit_set(f, NG_HCI_OCF_READ_HOLD_MODE_ACTIVITY - 1); 852 bit_set(f, NG_HCI_OCF_READ_XMIT_LEVEL - 1); 853 bit_set(f, NG_HCI_OCF_READ_SCO_FLOW_CONTROL - 1); 854 bit_set(f, NG_HCI_OCF_READ_LINK_SUPERVISION_TIMO - 1); 855 bit_set(f, NG_HCI_OCF_READ_SUPPORTED_IAC_NUM - 1); 856 bit_set(f, NG_HCI_OCF_READ_IAC_LAP - 1); 857 bit_set(f, NG_HCI_OCF_READ_PAGE_SCAN_PERIOD - 1); 858 bit_set(f, NG_HCI_OCF_READ_PAGE_SCAN - 1); 859 bit_set(f, NG_HCI_OCF_READ_LE_HOST_SUPPORTED -1); 860 861 /* Commands - Informational */ 862 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_INFO - 1]; 863 bit_set(f, NG_HCI_OCF_READ_LOCAL_VER - 1); 864 bit_set(f, NG_HCI_OCF_READ_LOCAL_FEATURES - 1); 865 bit_set(f, NG_HCI_OCF_READ_BUFFER_SIZE - 1); 866 bit_set(f, NG_HCI_OCF_READ_COUNTRY_CODE - 1); 867 bit_set(f, NG_HCI_OCF_READ_BDADDR - 1); 868 869 /* Commands - Status */ 870 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_STATUS - 1]; 871 bit_set(f, NG_HCI_OCF_READ_FAILED_CONTACT_CNTR - 1); 872 bit_set(f, NG_HCI_OCF_GET_LINK_QUALITY - 1); 873 bit_set(f, NG_HCI_OCF_READ_RSSI - 1); 874 875 /* Commands - Testing */ 876 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_TESTING - 1]; 877 bit_set(f, NG_HCI_OCF_READ_LOOPBACK_MODE - 1); 878 /*Commands - LE*/ 879 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_LE -1]; 880 bit_set(f, NG_HCI_OCF_LE_SET_SCAN_ENABLE - 1); 881 bit_set(f, NG_HCI_OCF_LE_SET_SCAN_PARAMETERS - 1); 882 bit_set(f, NG_HCI_OCF_LE_READ_LOCAL_SUPPORTED_FEATURES - 1); 883 bit_set(f, NG_HCI_OCF_LE_READ_BUFFER_SIZE - 1); 884 bit_set(f, NG_HCI_OCF_LE_READ_WHITE_LIST_SIZE - 1); 885 886 } /* ng_btsocket_hci_raw_init */ 887 SYSINIT(ng_btsocket_hci_raw_init, SI_SUB_PROTO_DOMAIN, SI_ORDER_THIRD, 888 ng_btsocket_hci_raw_init, NULL); 889 890 /* 891 * Abort connection on socket 892 */ 893 894 void 895 ng_btsocket_hci_raw_abort(struct socket *so) 896 { 897 } /* ng_btsocket_hci_raw_abort */ 898 899 void 900 ng_btsocket_hci_raw_close(struct socket *so) 901 { 902 } /* ng_btsocket_hci_raw_close */ 903 904 /* 905 * Create new raw HCI socket 906 */ 907 908 int 909 ng_btsocket_hci_raw_attach(struct socket *so, int proto, struct thread *td) 910 { 911 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 912 int error = 0; 913 914 if (pcb != NULL) 915 return (EISCONN); 916 917 if (ng_btsocket_hci_raw_node == NULL) 918 return (EPROTONOSUPPORT); 919 if (proto != BLUETOOTH_PROTO_HCI) 920 return (EPROTONOSUPPORT); 921 if (so->so_type != SOCK_RAW) 922 return (ESOCKTNOSUPPORT); 923 924 error = soreserve(so, NG_BTSOCKET_HCI_RAW_SENDSPACE, 925 NG_BTSOCKET_HCI_RAW_RECVSPACE); 926 if (error != 0) 927 return (error); 928 929 pcb = malloc(sizeof(*pcb), 930 M_NETGRAPH_BTSOCKET_HCI_RAW, M_NOWAIT|M_ZERO); 931 if (pcb == NULL) 932 return (ENOMEM); 933 934 so->so_pcb = (caddr_t) pcb; 935 pcb->so = so; 936 937 if (priv_check(td, PRIV_NETBLUETOOTH_RAW) == 0) 938 pcb->flags |= NG_BTSOCKET_HCI_RAW_PRIVILEGED; 939 940 /* 941 * Set default socket filter. By default socket only accepts HCI 942 * Command_Complete and Command_Status event packets. 943 */ 944 945 bit_set(pcb->filter.event_mask, NG_HCI_EVENT_COMMAND_COMPL - 1); 946 bit_set(pcb->filter.event_mask, NG_HCI_EVENT_COMMAND_STATUS - 1); 947 948 mtx_init(&pcb->pcb_mtx, "btsocks_hci_raw_pcb_mtx", NULL, MTX_DEF); 949 950 mtx_lock(&ng_btsocket_hci_raw_sockets_mtx); 951 LIST_INSERT_HEAD(&ng_btsocket_hci_raw_sockets, pcb, next); 952 mtx_unlock(&ng_btsocket_hci_raw_sockets_mtx); 953 954 return (0); 955 } /* ng_btsocket_hci_raw_attach */ 956 957 /* 958 * Bind raw HCI socket 959 */ 960 961 int 962 ng_btsocket_hci_raw_bind(struct socket *so, struct sockaddr *nam, 963 struct thread *td) 964 { 965 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 966 struct sockaddr_hci *sa = (struct sockaddr_hci *) nam; 967 968 if (pcb == NULL) 969 return (EINVAL); 970 if (ng_btsocket_hci_raw_node == NULL) 971 return (EINVAL); 972 973 if (sa == NULL) 974 return (EINVAL); 975 if (sa->hci_family != AF_BLUETOOTH) 976 return (EAFNOSUPPORT); 977 if (sa->hci_len != sizeof(*sa)) 978 return (EINVAL); 979 if (sa->hci_node[0] == 0) 980 return (EINVAL); 981 982 mtx_lock(&pcb->pcb_mtx); 983 bcopy(sa, &pcb->addr, sizeof(pcb->addr)); 984 mtx_unlock(&pcb->pcb_mtx); 985 986 return (0); 987 } /* ng_btsocket_hci_raw_bind */ 988 989 /* 990 * Connect raw HCI socket 991 */ 992 993 int 994 ng_btsocket_hci_raw_connect(struct socket *so, struct sockaddr *nam, 995 struct thread *td) 996 { 997 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 998 struct sockaddr_hci *sa = (struct sockaddr_hci *) nam; 999 1000 if (pcb == NULL) 1001 return (EINVAL); 1002 if (ng_btsocket_hci_raw_node == NULL) 1003 return (EINVAL); 1004 1005 if (sa == NULL) 1006 return (EINVAL); 1007 if (sa->hci_family != AF_BLUETOOTH) 1008 return (EAFNOSUPPORT); 1009 if (sa->hci_len != sizeof(*sa)) 1010 return (EINVAL); 1011 if (sa->hci_node[0] == 0) 1012 return (EDESTADDRREQ); 1013 1014 mtx_lock(&pcb->pcb_mtx); 1015 1016 if (bcmp(sa, &pcb->addr, sizeof(pcb->addr)) != 0) { 1017 mtx_unlock(&pcb->pcb_mtx); 1018 return (EADDRNOTAVAIL); 1019 } 1020 1021 soisconnected(so); 1022 1023 mtx_unlock(&pcb->pcb_mtx); 1024 1025 return (0); 1026 } /* ng_btsocket_hci_raw_connect */ 1027 1028 /* 1029 * Process ioctl on socket 1030 */ 1031 1032 int 1033 ng_btsocket_hci_raw_control(struct socket *so, u_long cmd, void *data, 1034 struct ifnet *ifp, struct thread *td) 1035 { 1036 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1037 char path[NG_NODESIZ + 1]; 1038 struct ng_mesg *msg = NULL; 1039 int error = 0; 1040 1041 if (pcb == NULL) 1042 return (EINVAL); 1043 if (ng_btsocket_hci_raw_node == NULL) 1044 return (EINVAL); 1045 1046 mtx_lock(&pcb->pcb_mtx); 1047 1048 /* Check if we have device name */ 1049 if (pcb->addr.hci_node[0] == 0) { 1050 mtx_unlock(&pcb->pcb_mtx); 1051 return (EHOSTUNREACH); 1052 } 1053 1054 /* Check if we have pending ioctl() */ 1055 if (pcb->token != 0) { 1056 mtx_unlock(&pcb->pcb_mtx); 1057 return (EBUSY); 1058 } 1059 1060 snprintf(path, sizeof(path), "%s:", pcb->addr.hci_node); 1061 1062 switch (cmd) { 1063 case SIOC_HCI_RAW_NODE_GET_STATE: { 1064 struct ng_btsocket_hci_raw_node_state *p = 1065 (struct ng_btsocket_hci_raw_node_state *) data; 1066 1067 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1068 NGM_HCI_NODE_GET_STATE, 1069 &p->state, sizeof(p->state)); 1070 } break; 1071 1072 case SIOC_HCI_RAW_NODE_INIT: 1073 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1074 error = ng_btsocket_hci_raw_send_ngmsg(path, 1075 NGM_HCI_NODE_INIT, NULL, 0); 1076 else 1077 error = EPERM; 1078 break; 1079 1080 case SIOC_HCI_RAW_NODE_GET_DEBUG: { 1081 struct ng_btsocket_hci_raw_node_debug *p = 1082 (struct ng_btsocket_hci_raw_node_debug *) data; 1083 1084 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1085 NGM_HCI_NODE_GET_DEBUG, 1086 &p->debug, sizeof(p->debug)); 1087 } break; 1088 1089 case SIOC_HCI_RAW_NODE_SET_DEBUG: { 1090 struct ng_btsocket_hci_raw_node_debug *p = 1091 (struct ng_btsocket_hci_raw_node_debug *) data; 1092 1093 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1094 error = ng_btsocket_hci_raw_send_ngmsg(path, 1095 NGM_HCI_NODE_SET_DEBUG, &p->debug, 1096 sizeof(p->debug)); 1097 else 1098 error = EPERM; 1099 } break; 1100 1101 case SIOC_HCI_RAW_NODE_GET_BUFFER: { 1102 struct ng_btsocket_hci_raw_node_buffer *p = 1103 (struct ng_btsocket_hci_raw_node_buffer *) data; 1104 1105 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1106 NGM_HCI_NODE_GET_BUFFER, 1107 &p->buffer, sizeof(p->buffer)); 1108 } break; 1109 1110 case SIOC_HCI_RAW_NODE_GET_BDADDR: { 1111 struct ng_btsocket_hci_raw_node_bdaddr *p = 1112 (struct ng_btsocket_hci_raw_node_bdaddr *) data; 1113 1114 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1115 NGM_HCI_NODE_GET_BDADDR, 1116 &p->bdaddr, sizeof(p->bdaddr)); 1117 } break; 1118 1119 case SIOC_HCI_RAW_NODE_GET_FEATURES: { 1120 struct ng_btsocket_hci_raw_node_features *p = 1121 (struct ng_btsocket_hci_raw_node_features *) data; 1122 1123 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1124 NGM_HCI_NODE_GET_FEATURES, 1125 &p->features, sizeof(p->features)); 1126 } break; 1127 1128 case SIOC_HCI_RAW_NODE_GET_STAT: { 1129 struct ng_btsocket_hci_raw_node_stat *p = 1130 (struct ng_btsocket_hci_raw_node_stat *) data; 1131 1132 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1133 NGM_HCI_NODE_GET_STAT, 1134 &p->stat, sizeof(p->stat)); 1135 } break; 1136 1137 case SIOC_HCI_RAW_NODE_RESET_STAT: 1138 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1139 error = ng_btsocket_hci_raw_send_ngmsg(path, 1140 NGM_HCI_NODE_RESET_STAT, NULL, 0); 1141 else 1142 error = EPERM; 1143 break; 1144 1145 case SIOC_HCI_RAW_NODE_FLUSH_NEIGHBOR_CACHE: 1146 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1147 error = ng_btsocket_hci_raw_send_ngmsg(path, 1148 NGM_HCI_NODE_FLUSH_NEIGHBOR_CACHE, 1149 NULL, 0); 1150 else 1151 error = EPERM; 1152 break; 1153 1154 case SIOC_HCI_RAW_NODE_GET_NEIGHBOR_CACHE: { 1155 struct ng_btsocket_hci_raw_node_neighbor_cache *p = 1156 (struct ng_btsocket_hci_raw_node_neighbor_cache *) data; 1157 ng_hci_node_get_neighbor_cache_ep *p1 = NULL; 1158 ng_hci_node_neighbor_cache_entry_ep *p2 = NULL; 1159 1160 if (p->num_entries <= 0 || 1161 p->num_entries > NG_HCI_MAX_NEIGHBOR_NUM || 1162 p->entries == NULL) { 1163 mtx_unlock(&pcb->pcb_mtx); 1164 return (EINVAL); 1165 } 1166 1167 NG_MKMESSAGE(msg, NGM_HCI_COOKIE, 1168 NGM_HCI_NODE_GET_NEIGHBOR_CACHE, 0, M_NOWAIT); 1169 if (msg == NULL) { 1170 mtx_unlock(&pcb->pcb_mtx); 1171 return (ENOMEM); 1172 } 1173 ng_btsocket_hci_raw_get_token(&msg->header.token); 1174 pcb->token = msg->header.token; 1175 pcb->msg = NULL; 1176 1177 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, path, 0); 1178 if (error != 0) { 1179 pcb->token = 0; 1180 mtx_unlock(&pcb->pcb_mtx); 1181 return (error); 1182 } 1183 1184 error = msleep(&pcb->msg, &pcb->pcb_mtx, 1185 PZERO|PCATCH, "hcictl", 1186 ng_btsocket_hci_raw_ioctl_timeout * hz); 1187 pcb->token = 0; 1188 1189 if (error != 0) { 1190 mtx_unlock(&pcb->pcb_mtx); 1191 return (error); 1192 } 1193 1194 msg = pcb->msg; 1195 pcb->msg = NULL; 1196 1197 mtx_unlock(&pcb->pcb_mtx); 1198 1199 if (msg != NULL && 1200 msg->header.cmd == NGM_HCI_NODE_GET_NEIGHBOR_CACHE) { 1201 /* Return data back to user space */ 1202 p1 = (ng_hci_node_get_neighbor_cache_ep *)(msg->data); 1203 p2 = (ng_hci_node_neighbor_cache_entry_ep *)(p1 + 1); 1204 1205 p->num_entries = min(p->num_entries, p1->num_entries); 1206 if (p->num_entries > 0) 1207 error = copyout((caddr_t) p2, 1208 (caddr_t) p->entries, 1209 p->num_entries * sizeof(*p2)); 1210 } else 1211 error = EINVAL; 1212 1213 NG_FREE_MSG(msg); /* checks for != NULL */ 1214 return (error); 1215 } /* NOTREACHED */ 1216 1217 case SIOC_HCI_RAW_NODE_GET_CON_LIST: { 1218 struct ng_btsocket_hci_raw_con_list *p = 1219 (struct ng_btsocket_hci_raw_con_list *) data; 1220 ng_hci_node_con_list_ep *p1 = NULL; 1221 ng_hci_node_con_ep *p2 = NULL; 1222 1223 if (p->num_connections == 0 || 1224 p->num_connections > NG_HCI_MAX_CON_NUM || 1225 p->connections == NULL) { 1226 mtx_unlock(&pcb->pcb_mtx); 1227 return (EINVAL); 1228 } 1229 1230 NG_MKMESSAGE(msg, NGM_HCI_COOKIE, NGM_HCI_NODE_GET_CON_LIST, 1231 0, M_NOWAIT); 1232 if (msg == NULL) { 1233 mtx_unlock(&pcb->pcb_mtx); 1234 return (ENOMEM); 1235 } 1236 ng_btsocket_hci_raw_get_token(&msg->header.token); 1237 pcb->token = msg->header.token; 1238 pcb->msg = NULL; 1239 1240 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, path, 0); 1241 if (error != 0) { 1242 pcb->token = 0; 1243 mtx_unlock(&pcb->pcb_mtx); 1244 return (error); 1245 } 1246 1247 error = msleep(&pcb->msg, &pcb->pcb_mtx, 1248 PZERO|PCATCH, "hcictl", 1249 ng_btsocket_hci_raw_ioctl_timeout * hz); 1250 pcb->token = 0; 1251 1252 if (error != 0) { 1253 mtx_unlock(&pcb->pcb_mtx); 1254 return (error); 1255 } 1256 1257 msg = pcb->msg; 1258 pcb->msg = NULL; 1259 1260 mtx_unlock(&pcb->pcb_mtx); 1261 1262 if (msg != NULL && 1263 msg->header.cmd == NGM_HCI_NODE_GET_CON_LIST) { 1264 /* Return data back to user space */ 1265 p1 = (ng_hci_node_con_list_ep *)(msg->data); 1266 p2 = (ng_hci_node_con_ep *)(p1 + 1); 1267 1268 p->num_connections = min(p->num_connections, 1269 p1->num_connections); 1270 if (p->num_connections > 0) 1271 error = copyout((caddr_t) p2, 1272 (caddr_t) p->connections, 1273 p->num_connections * sizeof(*p2)); 1274 } else 1275 error = EINVAL; 1276 1277 NG_FREE_MSG(msg); /* checks for != NULL */ 1278 return (error); 1279 } /* NOTREACHED */ 1280 1281 case SIOC_HCI_RAW_NODE_GET_LINK_POLICY_MASK: { 1282 struct ng_btsocket_hci_raw_node_link_policy_mask *p = 1283 (struct ng_btsocket_hci_raw_node_link_policy_mask *) 1284 data; 1285 1286 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1287 NGM_HCI_NODE_GET_LINK_POLICY_SETTINGS_MASK, 1288 &p->policy_mask, sizeof(p->policy_mask)); 1289 } break; 1290 1291 case SIOC_HCI_RAW_NODE_SET_LINK_POLICY_MASK: { 1292 struct ng_btsocket_hci_raw_node_link_policy_mask *p = 1293 (struct ng_btsocket_hci_raw_node_link_policy_mask *) 1294 data; 1295 1296 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1297 error = ng_btsocket_hci_raw_send_ngmsg(path, 1298 NGM_HCI_NODE_SET_LINK_POLICY_SETTINGS_MASK, 1299 &p->policy_mask, 1300 sizeof(p->policy_mask)); 1301 else 1302 error = EPERM; 1303 } break; 1304 1305 case SIOC_HCI_RAW_NODE_GET_PACKET_MASK: { 1306 struct ng_btsocket_hci_raw_node_packet_mask *p = 1307 (struct ng_btsocket_hci_raw_node_packet_mask *) data; 1308 1309 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1310 NGM_HCI_NODE_GET_PACKET_MASK, 1311 &p->packet_mask, sizeof(p->packet_mask)); 1312 } break; 1313 1314 case SIOC_HCI_RAW_NODE_SET_PACKET_MASK: { 1315 struct ng_btsocket_hci_raw_node_packet_mask *p = 1316 (struct ng_btsocket_hci_raw_node_packet_mask *) data; 1317 1318 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1319 error = ng_btsocket_hci_raw_send_ngmsg(path, 1320 NGM_HCI_NODE_SET_PACKET_MASK, 1321 &p->packet_mask, 1322 sizeof(p->packet_mask)); 1323 else 1324 error = EPERM; 1325 } break; 1326 1327 case SIOC_HCI_RAW_NODE_GET_ROLE_SWITCH: { 1328 struct ng_btsocket_hci_raw_node_role_switch *p = 1329 (struct ng_btsocket_hci_raw_node_role_switch *) data; 1330 1331 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1332 NGM_HCI_NODE_GET_ROLE_SWITCH, 1333 &p->role_switch, sizeof(p->role_switch)); 1334 } break; 1335 1336 case SIOC_HCI_RAW_NODE_SET_ROLE_SWITCH: { 1337 struct ng_btsocket_hci_raw_node_role_switch *p = 1338 (struct ng_btsocket_hci_raw_node_role_switch *) data; 1339 1340 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1341 error = ng_btsocket_hci_raw_send_ngmsg(path, 1342 NGM_HCI_NODE_SET_ROLE_SWITCH, 1343 &p->role_switch, 1344 sizeof(p->role_switch)); 1345 else 1346 error = EPERM; 1347 } break; 1348 1349 case SIOC_HCI_RAW_NODE_LIST_NAMES: { 1350 struct ng_btsocket_hci_raw_node_list_names *nl = 1351 (struct ng_btsocket_hci_raw_node_list_names *) data; 1352 struct nodeinfo *ni = nl->names; 1353 1354 if (nl->num_names == 0) { 1355 mtx_unlock(&pcb->pcb_mtx); 1356 return (EINVAL); 1357 } 1358 1359 NG_MKMESSAGE(msg, NGM_GENERIC_COOKIE, NGM_LISTNAMES, 1360 0, M_NOWAIT); 1361 if (msg == NULL) { 1362 mtx_unlock(&pcb->pcb_mtx); 1363 return (ENOMEM); 1364 } 1365 ng_btsocket_hci_raw_get_token(&msg->header.token); 1366 pcb->token = msg->header.token; 1367 pcb->msg = NULL; 1368 1369 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, ".:", 0); 1370 if (error != 0) { 1371 pcb->token = 0; 1372 mtx_unlock(&pcb->pcb_mtx); 1373 return (error); 1374 } 1375 1376 error = msleep(&pcb->msg, &pcb->pcb_mtx, 1377 PZERO|PCATCH, "hcictl", 1378 ng_btsocket_hci_raw_ioctl_timeout * hz); 1379 pcb->token = 0; 1380 1381 if (error != 0) { 1382 mtx_unlock(&pcb->pcb_mtx); 1383 return (error); 1384 } 1385 1386 msg = pcb->msg; 1387 pcb->msg = NULL; 1388 1389 mtx_unlock(&pcb->pcb_mtx); 1390 1391 if (msg != NULL && msg->header.cmd == NGM_LISTNAMES) { 1392 /* Return data back to user space */ 1393 struct namelist *nl1 = (struct namelist *) msg->data; 1394 struct nodeinfo *ni1 = &nl1->nodeinfo[0]; 1395 1396 while (nl->num_names > 0 && nl1->numnames > 0) { 1397 if (strcmp(ni1->type, NG_HCI_NODE_TYPE) == 0) { 1398 error = copyout((caddr_t) ni1, 1399 (caddr_t) ni, 1400 sizeof(*ni)); 1401 if (error != 0) 1402 break; 1403 1404 nl->num_names --; 1405 ni ++; 1406 } 1407 1408 nl1->numnames --; 1409 ni1 ++; 1410 } 1411 1412 nl->num_names = ni - nl->names; 1413 } else 1414 error = EINVAL; 1415 1416 NG_FREE_MSG(msg); /* checks for != NULL */ 1417 return (error); 1418 } /* NOTREACHED */ 1419 1420 default: 1421 error = EINVAL; 1422 break; 1423 } 1424 1425 mtx_unlock(&pcb->pcb_mtx); 1426 1427 return (error); 1428 } /* ng_btsocket_hci_raw_control */ 1429 1430 /* 1431 * Process getsockopt/setsockopt system calls 1432 */ 1433 1434 int 1435 ng_btsocket_hci_raw_ctloutput(struct socket *so, struct sockopt *sopt) 1436 { 1437 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1438 struct ng_btsocket_hci_raw_filter filter; 1439 int error = 0, dir; 1440 1441 if (pcb == NULL) 1442 return (EINVAL); 1443 if (ng_btsocket_hci_raw_node == NULL) 1444 return (EINVAL); 1445 1446 if (sopt->sopt_level != SOL_HCI_RAW) 1447 return (0); 1448 1449 mtx_lock(&pcb->pcb_mtx); 1450 1451 switch (sopt->sopt_dir) { 1452 case SOPT_GET: 1453 switch (sopt->sopt_name) { 1454 case SO_HCI_RAW_FILTER: 1455 error = sooptcopyout(sopt, &pcb->filter, 1456 sizeof(pcb->filter)); 1457 break; 1458 1459 case SO_HCI_RAW_DIRECTION: 1460 dir = (pcb->flags & NG_BTSOCKET_HCI_RAW_DIRECTION)?1:0; 1461 error = sooptcopyout(sopt, &dir, sizeof(dir)); 1462 break; 1463 1464 default: 1465 error = EINVAL; 1466 break; 1467 } 1468 break; 1469 1470 case SOPT_SET: 1471 switch (sopt->sopt_name) { 1472 case SO_HCI_RAW_FILTER: 1473 error = sooptcopyin(sopt, &filter, sizeof(filter), 1474 sizeof(filter)); 1475 if (error == 0) 1476 bcopy(&filter, &pcb->filter, 1477 sizeof(pcb->filter)); 1478 break; 1479 1480 case SO_HCI_RAW_DIRECTION: 1481 error = sooptcopyin(sopt, &dir, sizeof(dir), 1482 sizeof(dir)); 1483 if (error != 0) 1484 break; 1485 1486 if (dir) 1487 pcb->flags |= NG_BTSOCKET_HCI_RAW_DIRECTION; 1488 else 1489 pcb->flags &= ~NG_BTSOCKET_HCI_RAW_DIRECTION; 1490 break; 1491 1492 default: 1493 error = EINVAL; 1494 break; 1495 } 1496 break; 1497 1498 default: 1499 error = EINVAL; 1500 break; 1501 } 1502 1503 mtx_unlock(&pcb->pcb_mtx); 1504 1505 return (error); 1506 } /* ng_btsocket_hci_raw_ctloutput */ 1507 1508 /* 1509 * Detach raw HCI socket 1510 */ 1511 1512 void 1513 ng_btsocket_hci_raw_detach(struct socket *so) 1514 { 1515 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1516 1517 KASSERT(pcb != NULL, ("ng_btsocket_hci_raw_detach: pcb == NULL")); 1518 1519 if (ng_btsocket_hci_raw_node == NULL) 1520 return; 1521 1522 mtx_lock(&ng_btsocket_hci_raw_sockets_mtx); 1523 mtx_lock(&pcb->pcb_mtx); 1524 1525 LIST_REMOVE(pcb, next); 1526 1527 mtx_unlock(&pcb->pcb_mtx); 1528 mtx_unlock(&ng_btsocket_hci_raw_sockets_mtx); 1529 1530 mtx_destroy(&pcb->pcb_mtx); 1531 1532 bzero(pcb, sizeof(*pcb)); 1533 free(pcb, M_NETGRAPH_BTSOCKET_HCI_RAW); 1534 1535 so->so_pcb = NULL; 1536 } /* ng_btsocket_hci_raw_detach */ 1537 1538 /* 1539 * Disconnect raw HCI socket 1540 */ 1541 1542 int 1543 ng_btsocket_hci_raw_disconnect(struct socket *so) 1544 { 1545 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1546 1547 if (pcb == NULL) 1548 return (EINVAL); 1549 if (ng_btsocket_hci_raw_node == NULL) 1550 return (EINVAL); 1551 1552 mtx_lock(&pcb->pcb_mtx); 1553 soisdisconnected(so); 1554 mtx_unlock(&pcb->pcb_mtx); 1555 1556 return (0); 1557 } /* ng_btsocket_hci_raw_disconnect */ 1558 1559 /* 1560 * Send data 1561 */ 1562 1563 int 1564 ng_btsocket_hci_raw_send(struct socket *so, int flags, struct mbuf *m, 1565 struct sockaddr *sa, struct mbuf *control, struct thread *td) 1566 { 1567 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1568 struct mbuf *nam = NULL; 1569 int error = 0; 1570 1571 if (ng_btsocket_hci_raw_node == NULL) { 1572 error = ENETDOWN; 1573 goto drop; 1574 } 1575 if (pcb == NULL) { 1576 error = EINVAL; 1577 goto drop; 1578 } 1579 if (control != NULL) { 1580 error = EINVAL; 1581 goto drop; 1582 } 1583 1584 if (m->m_pkthdr.len < sizeof(ng_hci_cmd_pkt_t) || 1585 m->m_pkthdr.len > sizeof(ng_hci_cmd_pkt_t) + NG_HCI_CMD_PKT_SIZE) { 1586 error = EMSGSIZE; 1587 goto drop; 1588 } 1589 1590 if (m->m_len < sizeof(ng_hci_cmd_pkt_t)) { 1591 if ((m = m_pullup(m, sizeof(ng_hci_cmd_pkt_t))) == NULL) { 1592 error = ENOBUFS; 1593 goto drop; 1594 } 1595 } 1596 if (*mtod(m, u_int8_t *) != NG_HCI_CMD_PKT) { 1597 error = ENOTSUP; 1598 goto drop; 1599 } 1600 1601 mtx_lock(&pcb->pcb_mtx); 1602 1603 error = ng_btsocket_hci_raw_filter(pcb, m, 0); 1604 if (error != 0) { 1605 mtx_unlock(&pcb->pcb_mtx); 1606 goto drop; 1607 } 1608 1609 if (sa == NULL) { 1610 if (pcb->addr.hci_node[0] == 0) { 1611 mtx_unlock(&pcb->pcb_mtx); 1612 error = EDESTADDRREQ; 1613 goto drop; 1614 } 1615 1616 sa = (struct sockaddr *) &pcb->addr; 1617 } 1618 1619 MGET(nam, M_NOWAIT, MT_SONAME); 1620 if (nam == NULL) { 1621 mtx_unlock(&pcb->pcb_mtx); 1622 error = ENOBUFS; 1623 goto drop; 1624 } 1625 1626 nam->m_len = sizeof(struct sockaddr_hci); 1627 bcopy(sa,mtod(nam, struct sockaddr_hci *),sizeof(struct sockaddr_hci)); 1628 1629 nam->m_next = m; 1630 m = NULL; 1631 1632 mtx_unlock(&pcb->pcb_mtx); 1633 1634 return (ng_send_fn(ng_btsocket_hci_raw_node, NULL, 1635 ng_btsocket_hci_raw_output, nam, 0)); 1636 drop: 1637 NG_FREE_M(control); /* NG_FREE_M checks for != NULL */ 1638 NG_FREE_M(nam); 1639 NG_FREE_M(m); 1640 1641 return (error); 1642 } /* ng_btsocket_hci_raw_send */ 1643 1644 /* 1645 * Get socket address 1646 */ 1647 1648 int 1649 ng_btsocket_hci_raw_sockaddr(struct socket *so, struct sockaddr *sa) 1650 { 1651 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1652 struct sockaddr_hci *hci = (struct sockaddr_hci *)sa; 1653 1654 if (pcb == NULL) 1655 return (EINVAL); 1656 if (ng_btsocket_hci_raw_node == NULL) 1657 return (EINVAL); 1658 1659 *hci = (struct sockaddr_hci ){ 1660 .hci_len = sizeof(struct sockaddr_hci), 1661 .hci_family = AF_BLUETOOTH, 1662 }; 1663 1664 mtx_lock(&pcb->pcb_mtx); 1665 strlcpy(hci->hci_node, pcb->addr.hci_node, sizeof(hci->hci_node)); 1666 mtx_unlock(&pcb->pcb_mtx); 1667 1668 return (0); 1669 } 1670