hci_socket.c revision 1.46
1 /* $NetBSD: hci_socket.c,v 1.46 2019/01/28 12:53:01 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 2005 Iain Hibbert. 5 * Copyright (c) 2006 Itronix Inc. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of Itronix Inc. may not be used to endorse 17 * or promote products derived from this software without specific 18 * prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY 24 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 25 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 27 * ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 __KERNEL_RCSID(0, "$NetBSD: hci_socket.c,v 1.46 2019/01/28 12:53:01 martin Exp $"); 35 36 /* load symbolic names */ 37 #ifdef BLUETOOTH_DEBUG 38 #define PRUREQUESTS 39 #define PRCOREQUESTS 40 #endif 41 42 #include <sys/param.h> 43 #include <sys/domain.h> 44 #include <sys/kauth.h> 45 #include <sys/kernel.h> 46 #include <sys/kmem.h> 47 #include <sys/mbuf.h> 48 #include <sys/proc.h> 49 #include <sys/protosw.h> 50 #include <sys/socket.h> 51 #include <sys/socketvar.h> 52 #include <sys/systm.h> 53 54 #include <netbt/bluetooth.h> 55 #include <netbt/hci.h> 56 57 /******************************************************************************* 58 * 59 * HCI SOCK_RAW Sockets - for control of Bluetooth Devices 60 * 61 */ 62 63 /* 64 * the raw HCI protocol control block 65 */ 66 struct hci_pcb { 67 struct socket *hp_socket; /* socket */ 68 kauth_cred_t hp_cred; /* owner credential */ 69 unsigned int hp_flags; /* flags */ 70 bdaddr_t hp_laddr; /* local address */ 71 bdaddr_t hp_raddr; /* remote address */ 72 struct hci_filter hp_efilter; /* user event filter */ 73 struct hci_filter hp_pfilter; /* user packet filter */ 74 LIST_ENTRY(hci_pcb) hp_next; /* next HCI pcb */ 75 }; 76 77 /* hp_flags */ 78 #define HCI_DIRECTION (1<<1) /* direction control messages */ 79 #define HCI_PROMISCUOUS (1<<2) /* listen to all units */ 80 81 LIST_HEAD(hci_pcb_list, hci_pcb) hci_pcb = LIST_HEAD_INITIALIZER(hci_pcb); 82 83 /* sysctl defaults */ 84 int hci_sendspace = HCI_CMD_PKT_SIZE; 85 int hci_recvspace = 4096; 86 87 /* unprivileged commands opcode table */ 88 static const struct { 89 uint16_t opcode; 90 uint8_t offs; /* 0 - 63 */ 91 uint8_t mask; /* bit 0 - 7 */ 92 uint8_t length; /* approved length */ 93 } hci_cmds[] = { 94 { HCI_CMD_INQUIRY, 95 0, 0x01, sizeof(hci_inquiry_cp) }, 96 { HCI_CMD_REMOTE_NAME_REQ, 97 2, 0x08, sizeof(hci_remote_name_req_cp) }, 98 { HCI_CMD_READ_REMOTE_FEATURES, 99 2, 0x20, sizeof(hci_read_remote_features_cp) }, 100 { HCI_CMD_READ_REMOTE_EXTENDED_FEATURES, 101 2, 0x40, sizeof(hci_read_remote_extended_features_cp) }, 102 { HCI_CMD_READ_REMOTE_VER_INFO, 103 2, 0x80, sizeof(hci_read_remote_ver_info_cp) }, 104 { HCI_CMD_READ_CLOCK_OFFSET, 105 3, 0x01, sizeof(hci_read_clock_offset_cp) }, 106 { HCI_CMD_READ_LMP_HANDLE, 107 3, 0x02, sizeof(hci_read_lmp_handle_cp) }, 108 { HCI_CMD_ROLE_DISCOVERY, 109 4, 0x80, sizeof(hci_role_discovery_cp) }, 110 { HCI_CMD_READ_LINK_POLICY_SETTINGS, 111 5, 0x02, sizeof(hci_read_link_policy_settings_cp) }, 112 { HCI_CMD_READ_DEFAULT_LINK_POLICY_SETTINGS, 113 5, 0x08, 0 }, 114 { HCI_CMD_READ_PIN_TYPE, 115 6, 0x04, 0 }, 116 { HCI_CMD_READ_LOCAL_NAME, 117 7, 0x02, 0 }, 118 { HCI_CMD_READ_CON_ACCEPT_TIMEOUT, 119 7, 0x04, 0 }, 120 { HCI_CMD_READ_PAGE_TIMEOUT, 121 7, 0x10, 0 }, 122 { HCI_CMD_READ_SCAN_ENABLE, 123 7, 0x40, 0 }, 124 { HCI_CMD_READ_PAGE_SCAN_ACTIVITY, 125 8, 0x01, 0 }, 126 { HCI_CMD_READ_INQUIRY_SCAN_ACTIVITY, 127 8, 0x04, 0 }, 128 { HCI_CMD_READ_AUTH_ENABLE, 129 8, 0x10, 0 }, 130 { HCI_CMD_READ_ENCRYPTION_MODE, 131 8, 0x40, 0 }, 132 { HCI_CMD_READ_UNIT_CLASS, 133 9, 0x01, 0 }, 134 { HCI_CMD_READ_VOICE_SETTING, 135 9, 0x04, 0 }, 136 { HCI_CMD_READ_AUTO_FLUSH_TIMEOUT, 137 9, 0x10, sizeof(hci_read_auto_flush_timeout_cp) }, 138 { HCI_CMD_READ_NUM_BROADCAST_RETRANS, 139 9, 0x40, 0 }, 140 { HCI_CMD_READ_HOLD_MODE_ACTIVITY, 141 10, 0x01, 0 }, 142 { HCI_CMD_READ_XMIT_LEVEL, 143 10, 0x04, sizeof(hci_read_xmit_level_cp) }, 144 { HCI_CMD_READ_SCO_FLOW_CONTROL, 145 10, 0x08, 0 }, 146 { HCI_CMD_READ_LINK_SUPERVISION_TIMEOUT, 147 11, 0x01, sizeof(hci_read_link_supervision_timeout_cp) }, 148 { HCI_CMD_READ_NUM_SUPPORTED_IAC, 149 11, 0x04, 0 }, 150 { HCI_CMD_READ_IAC_LAP, 151 11, 0x08, 0 }, 152 { HCI_CMD_READ_PAGE_SCAN_PERIOD, 153 11, 0x20, 0 }, 154 { HCI_CMD_READ_PAGE_SCAN, 155 11, 0x80, 0 }, 156 { HCI_CMD_READ_INQUIRY_SCAN_TYPE, 157 12, 0x10, 0 }, 158 { HCI_CMD_READ_INQUIRY_MODE, 159 12, 0x40, 0 }, 160 { HCI_CMD_READ_PAGE_SCAN_TYPE, 161 13, 0x01, 0 }, 162 { HCI_CMD_READ_AFH_ASSESSMENT, 163 13, 0x04, 0 }, 164 { HCI_CMD_READ_LOCAL_VER, 165 14, 0x08, 0 }, 166 { HCI_CMD_READ_LOCAL_COMMANDS, 167 14, 0x10, 0 }, 168 { HCI_CMD_READ_LOCAL_FEATURES, 169 14, 0x20, 0 }, 170 { HCI_CMD_READ_LOCAL_EXTENDED_FEATURES, 171 14, 0x40, sizeof(hci_read_local_extended_features_cp) }, 172 { HCI_CMD_READ_BUFFER_SIZE, 173 14, 0x80, 0 }, 174 { HCI_CMD_READ_COUNTRY_CODE, 175 15, 0x01, 0 }, 176 { HCI_CMD_READ_BDADDR, 177 15, 0x02, 0 }, 178 { HCI_CMD_READ_FAILED_CONTACT_CNTR, 179 15, 0x04, sizeof(hci_read_failed_contact_cntr_cp) }, 180 { HCI_CMD_READ_LINK_QUALITY, 181 15, 0x10, sizeof(hci_read_link_quality_cp) }, 182 { HCI_CMD_READ_RSSI, 183 15, 0x20, sizeof(hci_read_rssi_cp) }, 184 { HCI_CMD_READ_AFH_CHANNEL_MAP, 185 15, 0x40, sizeof(hci_read_afh_channel_map_cp) }, 186 { HCI_CMD_READ_CLOCK, 187 15, 0x80, sizeof(hci_read_clock_cp) }, 188 { HCI_CMD_READ_LOOPBACK_MODE, 189 16, 0x01, 0 }, 190 { HCI_CMD_READ_EXTENDED_INQUIRY_RSP, 191 17, 0x01, 0 }, 192 { HCI_CMD_READ_SIMPLE_PAIRING_MODE, 193 17, 0x20, 0 }, 194 { HCI_CMD_READ_INQUIRY_RSP_XMIT_POWER, 195 18, 0x01, 0 }, 196 { HCI_CMD_READ_DEFAULT_ERRDATA_REPORTING, 197 18, 0x04, 0 }, 198 }; 199 200 /* 201 * supply a basic device send/recv policy 202 */ 203 static int 204 hci_device_cb(kauth_cred_t cred, kauth_action_t action, void *cookie, 205 void *arg0, void *arg1, void *arg2, void *arg3) 206 { 207 int i, result; 208 209 result = KAUTH_RESULT_DEFER; 210 211 switch (action) { 212 case KAUTH_DEVICE_BLUETOOTH_SEND: { 213 struct hci_unit *unit = (struct hci_unit *)arg0; 214 hci_cmd_hdr_t *hdr = (hci_cmd_hdr_t *)arg1; 215 216 /* 217 * Allow sending unprivileged commands if the packet size 218 * is correct and the unit claims to support it 219 */ 220 221 if (hdr->type != HCI_CMD_PKT) 222 break; 223 224 for (i = 0; i < __arraycount(hci_cmds); i++) { 225 if (hdr->opcode == hci_cmds[i].opcode 226 && hdr->length == hci_cmds[i].length 227 && (unit->hci_cmds[hci_cmds[i].offs] & hci_cmds[i].mask)) { 228 result = KAUTH_RESULT_ALLOW; 229 break; 230 } 231 } 232 233 break; 234 } 235 236 case KAUTH_DEVICE_BLUETOOTH_RECV: 237 switch((uint8_t)(uintptr_t)arg0) { 238 case HCI_CMD_PKT: { 239 uint16_t opcode = (uint16_t)(uintptr_t)arg1; 240 241 /* 242 * Allow to see any unprivileged command packet 243 */ 244 245 for (i = 0; i < __arraycount(hci_cmds); i++) { 246 if (opcode == hci_cmds[i].opcode) { 247 result = KAUTH_RESULT_ALLOW; 248 break; 249 } 250 } 251 252 break; 253 } 254 255 case HCI_EVENT_PKT: { 256 uint8_t event = (uint8_t)(uintptr_t)arg1; 257 258 /* 259 * Allow to receive most events 260 */ 261 262 switch (event) { 263 case HCI_EVENT_RETURN_LINK_KEYS: 264 case HCI_EVENT_LINK_KEY_NOTIFICATION: 265 case HCI_EVENT_USER_CONFIRM_REQ: 266 case HCI_EVENT_USER_PASSKEY_NOTIFICATION: 267 case HCI_EVENT_VENDOR: 268 break; 269 270 default: 271 result = KAUTH_RESULT_ALLOW; 272 break; 273 } 274 275 break; 276 } 277 278 case HCI_ACL_DATA_PKT: 279 case HCI_SCO_DATA_PKT: { 280 /* uint16_t handle = (uint16_t)(uintptr_t)arg1; */ 281 /* 282 * don't normally allow receiving data packets 283 */ 284 break; 285 } 286 287 default: 288 break; 289 } 290 291 break; 292 293 default: 294 break; 295 } 296 297 return result; 298 } 299 300 /* 301 * HCI protocol init routine, 302 * - set up a kauth listener to provide basic packet access policy 303 */ 304 void 305 hci_init(void) 306 { 307 308 if (kauth_listen_scope(KAUTH_SCOPE_DEVICE, hci_device_cb, NULL) == NULL) 309 panic("Bluetooth HCI: cannot listen on device scope"); 310 } 311 312 /* 313 * When command packet reaches the device, we can drop 314 * it from the socket buffer (called from hci_output_acl) 315 */ 316 void 317 hci_drop(void *arg) 318 { 319 struct socket *so = arg; 320 321 sbdroprecord(&so->so_snd); 322 sowwakeup(so); 323 } 324 325 /* 326 * HCI socket is going away and has some pending packets. We let them 327 * go by design, but remove the context pointer as it will be invalid 328 * and we no longer need to be notified. 329 */ 330 static void 331 hci_cmdwait_flush(struct socket *so) 332 { 333 struct hci_unit *unit; 334 struct socket *ctx; 335 struct mbuf *m; 336 337 DPRINTF("flushing %p\n", so); 338 339 SIMPLEQ_FOREACH(unit, &hci_unit_list, hci_next) { 340 m = MBUFQ_FIRST(&unit->hci_cmdwait); 341 while (m != NULL) { 342 ctx = M_GETCTX(m, struct socket *); 343 if (ctx == so) 344 M_SETCTX(m, NULL); 345 346 m = MBUFQ_NEXT(m); 347 } 348 } 349 } 350 351 static int 352 hci_attach(struct socket *so, int proto) 353 { 354 struct hci_pcb *pcb; 355 int error; 356 357 KASSERT(so->so_pcb == NULL); 358 359 if (so->so_lock == NULL) { 360 mutex_obj_hold(bt_lock); 361 so->so_lock = bt_lock; 362 solock(so); 363 } 364 KASSERT(solocked(so)); 365 366 error = soreserve(so, hci_sendspace, hci_recvspace); 367 if (error) { 368 return error; 369 } 370 371 pcb = kmem_zalloc(sizeof(struct hci_pcb), KM_SLEEP); 372 pcb->hp_cred = kauth_cred_dup(curlwp->l_cred); 373 pcb->hp_socket = so; 374 375 /* 376 * Set default user filter. By default, socket only passes 377 * Command_Complete and Command_Status Events. 378 */ 379 hci_filter_set(HCI_EVENT_COMMAND_COMPL, &pcb->hp_efilter); 380 hci_filter_set(HCI_EVENT_COMMAND_STATUS, &pcb->hp_efilter); 381 hci_filter_set(HCI_EVENT_PKT, &pcb->hp_pfilter); 382 383 LIST_INSERT_HEAD(&hci_pcb, pcb, hp_next); 384 so->so_pcb = pcb; 385 386 return 0; 387 } 388 389 static void 390 hci_detach(struct socket *so) 391 { 392 struct hci_pcb *pcb; 393 394 pcb = (struct hci_pcb *)so->so_pcb; 395 KASSERT(pcb != NULL); 396 397 if (so->so_snd.sb_mb != NULL) 398 hci_cmdwait_flush(so); 399 400 if (pcb->hp_cred != NULL) 401 kauth_cred_free(pcb->hp_cred); 402 403 so->so_pcb = NULL; 404 LIST_REMOVE(pcb, hp_next); 405 kmem_free(pcb, sizeof(*pcb)); 406 } 407 408 static int 409 hci_accept(struct socket *so, struct sockaddr *nam) 410 { 411 KASSERT(solocked(so)); 412 413 return EOPNOTSUPP; 414 } 415 416 static int 417 hci_bind(struct socket *so, struct sockaddr *nam, struct lwp *l) 418 { 419 struct hci_pcb *pcb = so->so_pcb; 420 struct sockaddr_bt *sa = (struct sockaddr_bt *)nam; 421 422 KASSERT(solocked(so)); 423 KASSERT(pcb != NULL); 424 KASSERT(nam != NULL); 425 426 if (sa->bt_len != sizeof(struct sockaddr_bt)) 427 return EINVAL; 428 429 if (sa->bt_family != AF_BLUETOOTH) 430 return EAFNOSUPPORT; 431 432 bdaddr_copy(&pcb->hp_laddr, &sa->bt_bdaddr); 433 434 if (bdaddr_any(&sa->bt_bdaddr)) 435 pcb->hp_flags |= HCI_PROMISCUOUS; 436 else 437 pcb->hp_flags &= ~HCI_PROMISCUOUS; 438 439 return 0; 440 } 441 442 static int 443 hci_listen(struct socket *so, struct lwp *l) 444 { 445 KASSERT(solocked(so)); 446 447 return EOPNOTSUPP; 448 } 449 450 static int 451 hci_connect(struct socket *so, struct sockaddr *nam, struct lwp *l) 452 { 453 struct hci_pcb *pcb = so->so_pcb; 454 struct sockaddr_bt *sa = (struct sockaddr_bt *)nam; 455 456 KASSERT(solocked(so)); 457 KASSERT(pcb != NULL); 458 KASSERT(nam != NULL); 459 460 if (sa->bt_len != sizeof(struct sockaddr_bt)) 461 return EINVAL; 462 463 if (sa->bt_family != AF_BLUETOOTH) 464 return EAFNOSUPPORT; 465 466 if (hci_unit_lookup(&sa->bt_bdaddr) == NULL) 467 return EADDRNOTAVAIL; 468 469 bdaddr_copy(&pcb->hp_raddr, &sa->bt_bdaddr); 470 soisconnected(so); 471 return 0; 472 } 473 474 static int 475 hci_connect2(struct socket *so, struct socket *so2) 476 { 477 KASSERT(solocked(so)); 478 479 return EOPNOTSUPP; 480 } 481 482 static int 483 hci_disconnect(struct socket *so) 484 { 485 struct hci_pcb *pcb = so->so_pcb; 486 487 KASSERT(solocked(so)); 488 KASSERT(pcb != NULL); 489 490 bdaddr_copy(&pcb->hp_raddr, BDADDR_ANY); 491 492 /* XXX we cannot call soisdisconnected() here, as it sets 493 * SS_CANTRCVMORE and SS_CANTSENDMORE. The problem being, 494 * that soisconnected() does not clear these and if you 495 * try to reconnect this socket (which is permitted) you 496 * get a broken pipe when you try to write any data. 497 */ 498 so->so_state &= ~SS_ISCONNECTED; 499 return 0; 500 } 501 502 static int 503 hci_shutdown(struct socket *so) 504 { 505 KASSERT(solocked(so)); 506 507 socantsendmore(so); 508 return 0; 509 } 510 511 static int 512 hci_abort(struct socket *so) 513 { 514 KASSERT(solocked(so)); 515 516 soisdisconnected(so); 517 hci_detach(so); 518 return 0; 519 } 520 521 static int 522 hci_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp) 523 { 524 int err; 525 mutex_enter(bt_lock); 526 err = hci_ioctl_pcb(cmd, nam); 527 mutex_exit(bt_lock); 528 return err; 529 } 530 531 static int 532 hci_stat(struct socket *so, struct stat *ub) 533 { 534 KASSERT(solocked(so)); 535 536 return 0; 537 } 538 539 static int 540 hci_peeraddr(struct socket *so, struct sockaddr *nam) 541 { 542 struct hci_pcb *pcb = (struct hci_pcb *)so->so_pcb; 543 struct sockaddr_bt *sa = (struct sockaddr_bt *)nam; 544 545 KASSERT(solocked(so)); 546 KASSERT(pcb != NULL); 547 KASSERT(nam != NULL); 548 549 memset(sa, 0, sizeof(struct sockaddr_bt)); 550 sa->bt_len = sizeof(struct sockaddr_bt); 551 sa->bt_family = AF_BLUETOOTH; 552 bdaddr_copy(&sa->bt_bdaddr, &pcb->hp_raddr); 553 return 0; 554 } 555 556 static int 557 hci_sockaddr(struct socket *so, struct sockaddr *nam) 558 { 559 struct hci_pcb *pcb = (struct hci_pcb *)so->so_pcb; 560 struct sockaddr_bt *sa = (struct sockaddr_bt *)nam; 561 562 KASSERT(solocked(so)); 563 KASSERT(pcb != NULL); 564 KASSERT(nam != NULL); 565 566 memset(sa, 0, sizeof(struct sockaddr_bt)); 567 sa->bt_len = sizeof(struct sockaddr_bt); 568 sa->bt_family = AF_BLUETOOTH; 569 bdaddr_copy(&sa->bt_bdaddr, &pcb->hp_laddr); 570 return 0; 571 } 572 573 static int 574 hci_rcvd(struct socket *so, int flags, struct lwp *l) 575 { 576 KASSERT(solocked(so)); 577 578 return EOPNOTSUPP; 579 } 580 581 static int 582 hci_recvoob(struct socket *so, struct mbuf *m, int flags) 583 { 584 KASSERT(solocked(so)); 585 586 return EOPNOTSUPP; 587 } 588 589 static int 590 hci_send(struct socket *so, struct mbuf *m, struct sockaddr *nam, 591 struct mbuf *control, struct lwp *l) 592 { 593 struct hci_pcb *pcb = so->so_pcb; 594 struct sockaddr_bt *sa = (struct sockaddr_bt *)nam; 595 struct hci_unit *unit; 596 struct mbuf *m0; 597 hci_cmd_hdr_t hdr; 598 int err = 0; 599 600 KASSERT(solocked(so)); 601 KASSERT(pcb != NULL); 602 KASSERT(m != NULL); 603 604 if (control) /* have no use for this */ 605 m_freem(control); 606 607 if (sa) { 608 if (sa->bt_len != sizeof(struct sockaddr_bt)) { 609 err = EINVAL; 610 goto bad; 611 } 612 613 if (sa->bt_family != AF_BLUETOOTH) { 614 err = EAFNOSUPPORT; 615 goto bad; 616 } 617 } 618 619 /* 620 * this came from userland, so we check it out first 621 */ 622 623 /* wants at least a header to start with */ 624 if (m->m_pkthdr.len < sizeof(hdr)) { 625 err = EMSGSIZE; 626 goto bad; 627 } 628 m_copydata(m, 0, sizeof(hdr), &hdr); 629 hdr.opcode = le16toh(hdr.opcode); 630 631 /* only allows CMD packets to be sent */ 632 if (hdr.type != HCI_CMD_PKT) { 633 err = EINVAL; 634 goto bad; 635 } 636 637 /* validates packet length */ 638 if (m->m_pkthdr.len != sizeof(hdr) + hdr.length) { 639 err = EMSGSIZE; 640 goto bad; 641 } 642 643 /* finds destination */ 644 unit = hci_unit_lookup((sa ? &sa->bt_bdaddr : &pcb->hp_raddr)); 645 if (unit == NULL) { 646 err = ENETDOWN; 647 goto bad; 648 } 649 650 /* security checks for unprivileged users */ 651 if (pcb->hp_cred != NULL 652 && kauth_authorize_device(pcb->hp_cred, 653 KAUTH_DEVICE_BLUETOOTH_SEND, 654 unit, &hdr, NULL, NULL) != 0) { 655 err = EPERM; 656 goto bad; 657 } 658 659 /* makess a copy for precious to keep */ 660 m0 = m_copypacket(m, M_DONTWAIT); 661 if (m0 == NULL) { 662 err = ENOMEM; 663 goto bad; 664 } 665 sbappendrecord(&pcb->hp_socket->so_snd, m0); 666 M_SETCTX(m, pcb->hp_socket); /* enable drop callback */ 667 668 DPRINTFN(2, "(%s) opcode (%03x|%04x)\n", device_xname(unit->hci_dev), 669 HCI_OGF(hdr.opcode), HCI_OCF(hdr.opcode)); 670 671 /* Sendss it */ 672 if (unit->hci_num_cmd_pkts == 0) 673 MBUFQ_ENQUEUE(&unit->hci_cmdwait, m); 674 else 675 hci_output_cmd(unit, m); 676 677 return 0; 678 679 bad: 680 DPRINTF("packet (%d bytes) not sent (error %d)\n", 681 m->m_pkthdr.len, err); 682 if (m) 683 m_freem(m); 684 685 return err; 686 } 687 688 static int 689 hci_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control) 690 { 691 KASSERT(solocked(so)); 692 693 m_freem(m); 694 m_freem(control); 695 696 return EOPNOTSUPP; 697 } 698 699 static int 700 hci_purgeif(struct socket *so, struct ifnet *ifp) 701 { 702 703 return EOPNOTSUPP; 704 } 705 706 /* 707 * get/set socket options 708 */ 709 int 710 hci_ctloutput(int req, struct socket *so, struct sockopt *sopt) 711 { 712 struct hci_pcb *pcb = (struct hci_pcb *)so->so_pcb; 713 int optval, err = 0; 714 715 DPRINTFN(2, "req %s\n", prcorequests[req]); 716 717 if (pcb == NULL) 718 return EINVAL; 719 720 if (sopt->sopt_level != BTPROTO_HCI) 721 return ENOPROTOOPT; 722 723 switch(req) { 724 case PRCO_GETOPT: 725 switch (sopt->sopt_name) { 726 case SO_HCI_EVT_FILTER: 727 err = sockopt_set(sopt, &pcb->hp_efilter, 728 sizeof(struct hci_filter)); 729 730 break; 731 732 case SO_HCI_PKT_FILTER: 733 err = sockopt_set(sopt, &pcb->hp_pfilter, 734 sizeof(struct hci_filter)); 735 736 break; 737 738 case SO_HCI_DIRECTION: 739 err = sockopt_setint(sopt, 740 (pcb->hp_flags & HCI_DIRECTION ? 1 : 0)); 741 742 break; 743 744 default: 745 err = ENOPROTOOPT; 746 break; 747 } 748 break; 749 750 case PRCO_SETOPT: 751 switch (sopt->sopt_name) { 752 case SO_HCI_EVT_FILTER: /* set event filter */ 753 err = sockopt_get(sopt, &pcb->hp_efilter, 754 sizeof(pcb->hp_efilter)); 755 756 break; 757 758 case SO_HCI_PKT_FILTER: /* set packet filter */ 759 err = sockopt_get(sopt, &pcb->hp_pfilter, 760 sizeof(pcb->hp_pfilter)); 761 762 break; 763 764 case SO_HCI_DIRECTION: /* request direction ctl messages */ 765 err = sockopt_getint(sopt, &optval); 766 if (err) 767 break; 768 769 if (optval) 770 pcb->hp_flags |= HCI_DIRECTION; 771 else 772 pcb->hp_flags &= ~HCI_DIRECTION; 773 break; 774 775 default: 776 err = ENOPROTOOPT; 777 break; 778 } 779 break; 780 781 default: 782 err = ENOPROTOOPT; 783 break; 784 } 785 786 return err; 787 } 788 789 /* 790 * HCI mbuf tap routine 791 * 792 * copy packets to any raw HCI sockets that wish (and are 793 * permitted) to see them 794 */ 795 void 796 hci_mtap(struct mbuf *m, struct hci_unit *unit) 797 { 798 struct hci_pcb *pcb; 799 struct mbuf *m0, *ctlmsg, **ctl; 800 struct sockaddr_bt sa; 801 uint8_t type; 802 uint8_t event; 803 uint16_t arg1; 804 805 KASSERT(m->m_len >= sizeof(type)); 806 807 type = *mtod(m, uint8_t *); 808 809 memset(&sa, 0, sizeof(sa)); 810 sa.bt_len = sizeof(struct sockaddr_bt); 811 sa.bt_family = AF_BLUETOOTH; 812 bdaddr_copy(&sa.bt_bdaddr, &unit->hci_bdaddr); 813 814 LIST_FOREACH(pcb, &hci_pcb, hp_next) { 815 /* 816 * filter according to source address 817 */ 818 if ((pcb->hp_flags & HCI_PROMISCUOUS) == 0 819 && bdaddr_same(&pcb->hp_laddr, &sa.bt_bdaddr) == 0) 820 continue; 821 822 /* 823 * filter according to packet type filter 824 */ 825 if (hci_filter_test(type, &pcb->hp_pfilter) == 0) 826 continue; 827 828 /* 829 * filter according to event/security filters 830 */ 831 switch(type) { 832 case HCI_EVENT_PKT: 833 KASSERT(m->m_len >= sizeof(hci_event_hdr_t)); 834 835 event = mtod(m, hci_event_hdr_t *)->event; 836 837 if (hci_filter_test(event, &pcb->hp_efilter) == 0) 838 continue; 839 840 arg1 = event; 841 break; 842 843 case HCI_CMD_PKT: 844 KASSERT(m->m_len >= sizeof(hci_cmd_hdr_t)); 845 arg1 = le16toh(mtod(m, hci_cmd_hdr_t *)->opcode); 846 break; 847 848 case HCI_ACL_DATA_PKT: 849 KASSERT(m->m_len >= sizeof(hci_acldata_hdr_t)); 850 arg1 = le16toh(mtod(m, hci_acldata_hdr_t *)->con_handle); 851 arg1 = HCI_CON_HANDLE(arg1); 852 break; 853 854 case HCI_SCO_DATA_PKT: 855 KASSERT(m->m_len >= sizeof(hci_scodata_hdr_t)); 856 arg1 = le16toh(mtod(m, hci_scodata_hdr_t *)->con_handle); 857 arg1 = HCI_CON_HANDLE(arg1); 858 break; 859 860 default: 861 arg1 = 0; 862 break; 863 } 864 865 if (pcb->hp_cred != NULL 866 && kauth_authorize_device(pcb->hp_cred, 867 KAUTH_DEVICE_BLUETOOTH_RECV, 868 KAUTH_ARG(type), KAUTH_ARG(arg1), NULL, NULL) != 0) 869 continue; 870 871 /* 872 * create control messages 873 */ 874 ctlmsg = NULL; 875 ctl = &ctlmsg; 876 if (pcb->hp_flags & HCI_DIRECTION) { 877 int dir = m->m_flags & M_LINK0 ? 1 : 0; 878 879 *ctl = sbcreatecontrol(&dir, sizeof(dir), 880 SCM_HCI_DIRECTION, BTPROTO_HCI); 881 882 if (*ctl != NULL) 883 ctl = &((*ctl)->m_next); 884 } 885 if (pcb->hp_socket->so_options & SO_TIMESTAMP) { 886 struct timeval tv; 887 888 microtime(&tv); 889 *ctl = sbcreatecontrol(&tv, sizeof(tv), 890 SCM_TIMESTAMP, SOL_SOCKET); 891 892 if (*ctl != NULL) 893 ctl = &((*ctl)->m_next); 894 } 895 896 /* 897 * copy to socket 898 */ 899 m0 = m_copypacket(m, M_DONTWAIT); 900 if (m0 && sbappendaddr(&pcb->hp_socket->so_rcv, 901 (struct sockaddr *)&sa, m0, ctlmsg)) { 902 sorwakeup(pcb->hp_socket); 903 } else { 904 m_freem(ctlmsg); 905 m_freem(m0); 906 } 907 } 908 } 909 910 PR_WRAP_USRREQS(hci) 911 912 #define hci_attach hci_attach_wrapper 913 #define hci_detach hci_detach_wrapper 914 #define hci_accept hci_accept_wrapper 915 #define hci_bind hci_bind_wrapper 916 #define hci_listen hci_listen_wrapper 917 #define hci_connect hci_connect_wrapper 918 #define hci_connect2 hci_connect2_wrapper 919 #define hci_disconnect hci_disconnect_wrapper 920 #define hci_shutdown hci_shutdown_wrapper 921 #define hci_abort hci_abort_wrapper 922 #define hci_ioctl hci_ioctl_wrapper 923 #define hci_stat hci_stat_wrapper 924 #define hci_peeraddr hci_peeraddr_wrapper 925 #define hci_sockaddr hci_sockaddr_wrapper 926 #define hci_rcvd hci_rcvd_wrapper 927 #define hci_recvoob hci_recvoob_wrapper 928 #define hci_send hci_send_wrapper 929 #define hci_sendoob hci_sendoob_wrapper 930 #define hci_purgeif hci_purgeif_wrapper 931 932 const struct pr_usrreqs hci_usrreqs = { 933 .pr_attach = hci_attach, 934 .pr_detach = hci_detach, 935 .pr_accept = hci_accept, 936 .pr_bind = hci_bind, 937 .pr_listen = hci_listen, 938 .pr_connect = hci_connect, 939 .pr_connect2 = hci_connect2, 940 .pr_disconnect = hci_disconnect, 941 .pr_shutdown = hci_shutdown, 942 .pr_abort = hci_abort, 943 .pr_ioctl = hci_ioctl, 944 .pr_stat = hci_stat, 945 .pr_peeraddr = hci_peeraddr, 946 .pr_sockaddr = hci_sockaddr, 947 .pr_rcvd = hci_rcvd, 948 .pr_recvoob = hci_recvoob, 949 .pr_send = hci_send, 950 .pr_sendoob = hci_sendoob, 951 .pr_purgeif = hci_purgeif, 952 }; 953
Indexes created Fri Sep 26 20:09:58 GMT 2025