1 /* 2 * ng_btsocket_hci_raw.c 3 */ 4 5 /*- 6 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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 * $FreeBSD$ 34 */ 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/bitstring.h> 39 #include <sys/domain.h> 40 #include <sys/endian.h> 41 #include <sys/errno.h> 42 #include <sys/filedesc.h> 43 #include <sys/ioccom.h> 44 #include <sys/kernel.h> 45 #include <sys/lock.h> 46 #include <sys/malloc.h> 47 #include <sys/mbuf.h> 48 #include <sys/mutex.h> 49 #include <sys/priv.h> 50 #include <sys/protosw.h> 51 #include <sys/queue.h> 52 #include <sys/socket.h> 53 #include <sys/socketvar.h> 54 #include <sys/sysctl.h> 55 #include <sys/taskqueue.h> 56 57 #include <net/vnet.h> 58 59 #include <netgraph/ng_message.h> 60 #include <netgraph/netgraph.h> 61 #include <netgraph/bluetooth/include/ng_bluetooth.h> 62 #include <netgraph/bluetooth/include/ng_hci.h> 63 #include <netgraph/bluetooth/include/ng_l2cap.h> 64 #include <netgraph/bluetooth/include/ng_btsocket.h> 65 #include <netgraph/bluetooth/include/ng_btsocket_hci_raw.h> 66 67 /* MALLOC define */ 68 #ifdef NG_SEPARATE_MALLOC 69 static MALLOC_DEFINE(M_NETGRAPH_BTSOCKET_HCI_RAW, "netgraph_btsocks_hci_raw", 70 "Netgraph Bluetooth raw HCI sockets"); 71 #else 72 #define M_NETGRAPH_BTSOCKET_HCI_RAW M_NETGRAPH 73 #endif /* NG_SEPARATE_MALLOC */ 74 75 /* Netgraph node methods */ 76 static ng_constructor_t ng_btsocket_hci_raw_node_constructor; 77 static ng_rcvmsg_t ng_btsocket_hci_raw_node_rcvmsg; 78 static ng_shutdown_t ng_btsocket_hci_raw_node_shutdown; 79 static ng_newhook_t ng_btsocket_hci_raw_node_newhook; 80 static ng_connect_t ng_btsocket_hci_raw_node_connect; 81 static ng_rcvdata_t ng_btsocket_hci_raw_node_rcvdata; 82 static ng_disconnect_t ng_btsocket_hci_raw_node_disconnect; 83 84 static void ng_btsocket_hci_raw_input (void *, int); 85 static void ng_btsocket_hci_raw_output(node_p, hook_p, void *, int); 86 static void ng_btsocket_hci_raw_savctl(ng_btsocket_hci_raw_pcb_p, 87 struct mbuf **, 88 struct mbuf *); 89 static int ng_btsocket_hci_raw_filter(ng_btsocket_hci_raw_pcb_p, 90 struct mbuf *, int); 91 92 #define ng_btsocket_hci_raw_wakeup_input_task() \ 93 taskqueue_enqueue(taskqueue_swi, &ng_btsocket_hci_raw_task) 94 95 /* Security filter */ 96 struct ng_btsocket_hci_raw_sec_filter { 97 bitstr_t bit_decl(events, 0xff); 98 bitstr_t bit_decl(commands[0x3f], 0x3ff); 99 }; 100 101 /* Netgraph type descriptor */ 102 static struct ng_type typestruct = { 103 .version = NG_ABI_VERSION, 104 .name = NG_BTSOCKET_HCI_RAW_NODE_TYPE, 105 .constructor = ng_btsocket_hci_raw_node_constructor, 106 .rcvmsg = ng_btsocket_hci_raw_node_rcvmsg, 107 .shutdown = ng_btsocket_hci_raw_node_shutdown, 108 .newhook = ng_btsocket_hci_raw_node_newhook, 109 .connect = ng_btsocket_hci_raw_node_connect, 110 .rcvdata = ng_btsocket_hci_raw_node_rcvdata, 111 .disconnect = ng_btsocket_hci_raw_node_disconnect, 112 }; 113 114 /* Globals */ 115 static u_int32_t ng_btsocket_hci_raw_debug_level; 116 static u_int32_t ng_btsocket_hci_raw_ioctl_timeout; 117 static node_p ng_btsocket_hci_raw_node; 118 static struct ng_bt_itemq ng_btsocket_hci_raw_queue; 119 static struct mtx ng_btsocket_hci_raw_queue_mtx; 120 static struct task ng_btsocket_hci_raw_task; 121 static LIST_HEAD(, ng_btsocket_hci_raw_pcb) ng_btsocket_hci_raw_sockets; 122 static struct mtx ng_btsocket_hci_raw_sockets_mtx; 123 static u_int32_t ng_btsocket_hci_raw_token; 124 static struct mtx ng_btsocket_hci_raw_token_mtx; 125 static struct ng_btsocket_hci_raw_sec_filter *ng_btsocket_hci_raw_sec_filter; 126 static struct timeval ng_btsocket_hci_raw_lasttime; 127 static int ng_btsocket_hci_raw_curpps; 128 129 /* Sysctl tree */ 130 SYSCTL_DECL(_net_bluetooth_hci_sockets); 131 static SYSCTL_NODE(_net_bluetooth_hci_sockets, OID_AUTO, raw, 132 CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 133 "Bluetooth raw HCI sockets family"); 134 SYSCTL_UINT(_net_bluetooth_hci_sockets_raw, OID_AUTO, debug_level, CTLFLAG_RW, 135 &ng_btsocket_hci_raw_debug_level, NG_BTSOCKET_WARN_LEVEL, 136 "Bluetooth raw HCI sockets debug level"); 137 SYSCTL_UINT(_net_bluetooth_hci_sockets_raw, OID_AUTO, ioctl_timeout, CTLFLAG_RW, 138 &ng_btsocket_hci_raw_ioctl_timeout, 5, 139 "Bluetooth raw HCI sockets ioctl timeout"); 140 SYSCTL_UINT(_net_bluetooth_hci_sockets_raw, OID_AUTO, queue_len, CTLFLAG_RD, 141 &ng_btsocket_hci_raw_queue.len, 0, 142 "Bluetooth raw HCI sockets input queue length"); 143 SYSCTL_UINT(_net_bluetooth_hci_sockets_raw, OID_AUTO, queue_maxlen, CTLFLAG_RD, 144 &ng_btsocket_hci_raw_queue.maxlen, 0, 145 "Bluetooth raw HCI sockets input queue max. length"); 146 SYSCTL_UINT(_net_bluetooth_hci_sockets_raw, OID_AUTO, queue_drops, CTLFLAG_RD, 147 &ng_btsocket_hci_raw_queue.drops, 0, 148 "Bluetooth raw HCI sockets input queue drops"); 149 150 /* Debug */ 151 #define NG_BTSOCKET_HCI_RAW_INFO \ 152 if (ng_btsocket_hci_raw_debug_level >= NG_BTSOCKET_INFO_LEVEL && \ 153 ppsratecheck(&ng_btsocket_hci_raw_lasttime, &ng_btsocket_hci_raw_curpps, 1)) \ 154 printf 155 156 #define NG_BTSOCKET_HCI_RAW_WARN \ 157 if (ng_btsocket_hci_raw_debug_level >= NG_BTSOCKET_WARN_LEVEL && \ 158 ppsratecheck(&ng_btsocket_hci_raw_lasttime, &ng_btsocket_hci_raw_curpps, 1)) \ 159 printf 160 161 #define NG_BTSOCKET_HCI_RAW_ERR \ 162 if (ng_btsocket_hci_raw_debug_level >= NG_BTSOCKET_ERR_LEVEL && \ 163 ppsratecheck(&ng_btsocket_hci_raw_lasttime, &ng_btsocket_hci_raw_curpps, 1)) \ 164 printf 165 166 #define NG_BTSOCKET_HCI_RAW_ALERT \ 167 if (ng_btsocket_hci_raw_debug_level >= NG_BTSOCKET_ALERT_LEVEL && \ 168 ppsratecheck(&ng_btsocket_hci_raw_lasttime, &ng_btsocket_hci_raw_curpps, 1)) \ 169 printf 170 171 /**************************************************************************** 172 **************************************************************************** 173 ** Netgraph specific 174 **************************************************************************** 175 ****************************************************************************/ 176 177 /* 178 * Netgraph node constructor. Do not allow to create node of this type. 179 */ 180 181 static int 182 ng_btsocket_hci_raw_node_constructor(node_p node) 183 { 184 return (EINVAL); 185 } /* ng_btsocket_hci_raw_node_constructor */ 186 187 /* 188 * Netgraph node destructor. Just let old node go and create new fresh one. 189 */ 190 191 static int 192 ng_btsocket_hci_raw_node_shutdown(node_p node) 193 { 194 int error = 0; 195 196 NG_NODE_UNREF(node); 197 198 error = ng_make_node_common(&typestruct, &ng_btsocket_hci_raw_node); 199 if (error != 0) { 200 NG_BTSOCKET_HCI_RAW_ALERT( 201 "%s: Could not create Netgraph node, error=%d\n", __func__, error); 202 203 ng_btsocket_hci_raw_node = NULL; 204 205 return (ENOMEM); 206 } 207 208 error = ng_name_node(ng_btsocket_hci_raw_node, 209 NG_BTSOCKET_HCI_RAW_NODE_TYPE); 210 if (error != 0) { 211 NG_BTSOCKET_HCI_RAW_ALERT( 212 "%s: Could not name Netgraph node, error=%d\n", __func__, error); 213 214 NG_NODE_UNREF(ng_btsocket_hci_raw_node); 215 ng_btsocket_hci_raw_node = NULL; 216 217 return (EINVAL); 218 } 219 220 return (0); 221 } /* ng_btsocket_hci_raw_node_shutdown */ 222 223 /* 224 * Create new hook. Just say "yes" 225 */ 226 227 static int 228 ng_btsocket_hci_raw_node_newhook(node_p node, hook_p hook, char const *name) 229 { 230 return (0); 231 } /* ng_btsocket_hci_raw_node_newhook */ 232 233 /* 234 * Connect hook. Just say "yes" 235 */ 236 237 static int 238 ng_btsocket_hci_raw_node_connect(hook_p hook) 239 { 240 return (0); 241 } /* ng_btsocket_hci_raw_node_connect */ 242 243 /* 244 * Disconnect hook 245 */ 246 247 static int 248 ng_btsocket_hci_raw_node_disconnect(hook_p hook) 249 { 250 return (0); 251 } /* ng_btsocket_hci_raw_node_disconnect */ 252 253 /* 254 * Receive control message. 255 * Make sure it is a message from HCI node and it is a response. 256 * Enqueue item and schedule input task. 257 */ 258 259 static int 260 ng_btsocket_hci_raw_node_rcvmsg(node_p node, item_p item, hook_p lasthook) 261 { 262 struct ng_mesg *msg = NGI_MSG(item); /* item still has message */ 263 int error = 0; 264 265 /* 266 * Check for empty sockets list creates LOR when both sender and 267 * receiver device are connected to the same host, so remove it 268 * for now 269 */ 270 271 if (msg != NULL && 272 (msg->header.typecookie == NGM_HCI_COOKIE || 273 msg->header.typecookie == NGM_GENERIC_COOKIE) && 274 msg->header.flags & NGF_RESP) { 275 if (msg->header.token == 0) { 276 NG_FREE_ITEM(item); 277 return (0); 278 } 279 280 mtx_lock(&ng_btsocket_hci_raw_queue_mtx); 281 if (NG_BT_ITEMQ_FULL(&ng_btsocket_hci_raw_queue)) { 282 NG_BTSOCKET_HCI_RAW_ERR( 283 "%s: Input queue is full\n", __func__); 284 285 NG_BT_ITEMQ_DROP(&ng_btsocket_hci_raw_queue); 286 NG_FREE_ITEM(item); 287 error = ENOBUFS; 288 } else { 289 NG_BT_ITEMQ_ENQUEUE(&ng_btsocket_hci_raw_queue, item); 290 error = ng_btsocket_hci_raw_wakeup_input_task(); 291 } 292 mtx_unlock(&ng_btsocket_hci_raw_queue_mtx); 293 } else { 294 NG_FREE_ITEM(item); 295 error = EINVAL; 296 } 297 298 return (error); 299 } /* ng_btsocket_hci_raw_node_rcvmsg */ 300 301 /* 302 * Receive packet from the one of our hook. 303 * Prepend every packet with sockaddr_hci and record sender's node name. 304 * Enqueue item and schedule input task. 305 */ 306 307 static int 308 ng_btsocket_hci_raw_node_rcvdata(hook_p hook, item_p item) 309 { 310 struct mbuf *nam = NULL; 311 int error; 312 313 /* 314 * Check for empty sockets list creates LOR when both sender and 315 * receiver device are connected to the same host, so remove it 316 * for now 317 */ 318 319 MGET(nam, M_NOWAIT, MT_SONAME); 320 if (nam != NULL) { 321 struct sockaddr_hci *sa = mtod(nam, struct sockaddr_hci *); 322 323 nam->m_len = sizeof(struct sockaddr_hci); 324 325 sa->hci_len = sizeof(*sa); 326 sa->hci_family = AF_BLUETOOTH; 327 strlcpy(sa->hci_node, NG_PEER_NODE_NAME(hook), 328 sizeof(sa->hci_node)); 329 330 NGI_GET_M(item, nam->m_next); 331 NGI_M(item) = nam; 332 333 mtx_lock(&ng_btsocket_hci_raw_queue_mtx); 334 if (NG_BT_ITEMQ_FULL(&ng_btsocket_hci_raw_queue)) { 335 NG_BTSOCKET_HCI_RAW_ERR( 336 "%s: Input queue is full\n", __func__); 337 338 NG_BT_ITEMQ_DROP(&ng_btsocket_hci_raw_queue); 339 NG_FREE_ITEM(item); 340 error = ENOBUFS; 341 } else { 342 NG_BT_ITEMQ_ENQUEUE(&ng_btsocket_hci_raw_queue, item); 343 error = ng_btsocket_hci_raw_wakeup_input_task(); 344 } 345 mtx_unlock(&ng_btsocket_hci_raw_queue_mtx); 346 } else { 347 NG_BTSOCKET_HCI_RAW_ERR( 348 "%s: Failed to allocate address mbuf\n", __func__); 349 350 NG_FREE_ITEM(item); 351 error = ENOBUFS; 352 } 353 354 return (error); 355 } /* ng_btsocket_hci_raw_node_rcvdata */ 356 357 /**************************************************************************** 358 **************************************************************************** 359 ** Sockets specific 360 **************************************************************************** 361 ****************************************************************************/ 362 363 /* 364 * Get next token. We need token to avoid theoretical race where process 365 * submits ioctl() message then interrupts ioctl() and re-submits another 366 * ioctl() on the same socket *before* first ioctl() complete. 367 */ 368 369 static void 370 ng_btsocket_hci_raw_get_token(u_int32_t *token) 371 { 372 mtx_lock(&ng_btsocket_hci_raw_token_mtx); 373 374 if (++ ng_btsocket_hci_raw_token == 0) 375 ng_btsocket_hci_raw_token = 1; 376 377 *token = ng_btsocket_hci_raw_token; 378 379 mtx_unlock(&ng_btsocket_hci_raw_token_mtx); 380 } /* ng_btsocket_hci_raw_get_token */ 381 382 /* 383 * Send Netgraph message to the node - do not expect reply 384 */ 385 386 static int 387 ng_btsocket_hci_raw_send_ngmsg(char *path, int cmd, void *arg, int arglen) 388 { 389 struct ng_mesg *msg = NULL; 390 int error = 0; 391 392 NG_MKMESSAGE(msg, NGM_HCI_COOKIE, cmd, arglen, M_NOWAIT); 393 if (msg == NULL) 394 return (ENOMEM); 395 396 if (arg != NULL && arglen > 0) 397 bcopy(arg, msg->data, arglen); 398 399 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, path, 0); 400 401 return (error); 402 } /* ng_btsocket_hci_raw_send_ngmsg */ 403 404 /* 405 * Send Netgraph message to the node (no data) and wait for reply 406 */ 407 408 static int 409 ng_btsocket_hci_raw_send_sync_ngmsg(ng_btsocket_hci_raw_pcb_p pcb, char *path, 410 int cmd, void *rsp, int rsplen) 411 { 412 struct ng_mesg *msg = NULL; 413 int error = 0; 414 415 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 416 417 NG_MKMESSAGE(msg, NGM_HCI_COOKIE, cmd, 0, M_NOWAIT); 418 if (msg == NULL) 419 return (ENOMEM); 420 421 ng_btsocket_hci_raw_get_token(&msg->header.token); 422 pcb->token = msg->header.token; 423 pcb->msg = NULL; 424 425 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, path, 0); 426 if (error != 0) { 427 pcb->token = 0; 428 return (error); 429 } 430 431 error = msleep(&pcb->msg, &pcb->pcb_mtx, PZERO|PCATCH, "hcictl", 432 ng_btsocket_hci_raw_ioctl_timeout * hz); 433 pcb->token = 0; 434 435 if (error != 0) 436 return (error); 437 438 if (pcb->msg != NULL && pcb->msg->header.cmd == cmd) 439 bcopy(pcb->msg->data, rsp, rsplen); 440 else 441 error = EINVAL; 442 443 NG_FREE_MSG(pcb->msg); /* checks for != NULL */ 444 445 return (0); 446 } /* ng_btsocket_hci_raw_send_sync_ngmsg */ 447 448 /* 449 * Create control information for the packet 450 */ 451 452 static void 453 ng_btsocket_hci_raw_savctl(ng_btsocket_hci_raw_pcb_p pcb, struct mbuf **ctl, 454 struct mbuf *m) 455 { 456 int dir; 457 struct timeval tv; 458 459 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 460 461 if (pcb->flags & NG_BTSOCKET_HCI_RAW_DIRECTION) { 462 dir = (m->m_flags & M_PROTO1)? 1 : 0; 463 *ctl = sbcreatecontrol((caddr_t) &dir, sizeof(dir), 464 SCM_HCI_RAW_DIRECTION, SOL_HCI_RAW); 465 if (*ctl != NULL) 466 ctl = &((*ctl)->m_next); 467 } 468 469 if (pcb->so->so_options & SO_TIMESTAMP) { 470 microtime(&tv); 471 *ctl = sbcreatecontrol((caddr_t) &tv, sizeof(tv), 472 SCM_TIMESTAMP, SOL_SOCKET); 473 if (*ctl != NULL) 474 ctl = &((*ctl)->m_next); 475 } 476 } /* ng_btsocket_hci_raw_savctl */ 477 478 /* 479 * Raw HCI sockets data input routine 480 */ 481 482 static void 483 ng_btsocket_hci_raw_data_input(struct mbuf *nam) 484 { 485 ng_btsocket_hci_raw_pcb_p pcb = NULL; 486 struct mbuf *m0 = NULL, *m = NULL; 487 struct sockaddr_hci *sa = NULL; 488 489 m0 = nam->m_next; 490 nam->m_next = NULL; 491 492 KASSERT((nam->m_type == MT_SONAME), 493 ("%s: m_type=%d\n", __func__, nam->m_type)); 494 KASSERT((m0->m_flags & M_PKTHDR), 495 ("%s: m_flags=%#x\n", __func__, m0->m_flags)); 496 497 sa = mtod(nam, struct sockaddr_hci *); 498 499 mtx_lock(&ng_btsocket_hci_raw_sockets_mtx); 500 501 LIST_FOREACH(pcb, &ng_btsocket_hci_raw_sockets, next) { 502 503 mtx_lock(&pcb->pcb_mtx); 504 505 /* 506 * If socket was bound then check address and 507 * make sure it matches. 508 */ 509 510 if (pcb->addr.hci_node[0] != 0 && 511 strcmp(sa->hci_node, pcb->addr.hci_node) != 0) 512 goto next; 513 514 /* 515 * Check packet against filters 516 * XXX do we have to call m_pullup() here? 517 */ 518 519 if (ng_btsocket_hci_raw_filter(pcb, m0, 1) != 0) 520 goto next; 521 522 /* 523 * Make a copy of the packet, append to the socket's 524 * receive queue and wakeup socket. sbappendaddr() 525 * will check if socket has enough buffer space. 526 */ 527 528 m = m_dup(m0, M_NOWAIT); 529 if (m != NULL) { 530 struct mbuf *ctl = NULL; 531 532 ng_btsocket_hci_raw_savctl(pcb, &ctl, m); 533 534 if (sbappendaddr(&pcb->so->so_rcv, 535 (struct sockaddr *) sa, m, ctl)) 536 sorwakeup(pcb->so); 537 else { 538 NG_BTSOCKET_HCI_RAW_INFO( 539 "%s: sbappendaddr() failed\n", __func__); 540 541 NG_FREE_M(m); 542 NG_FREE_M(ctl); 543 } 544 } 545 next: 546 mtx_unlock(&pcb->pcb_mtx); 547 } 548 549 mtx_unlock(&ng_btsocket_hci_raw_sockets_mtx); 550 551 NG_FREE_M(nam); 552 NG_FREE_M(m0); 553 } /* ng_btsocket_hci_raw_data_input */ 554 555 /* 556 * Raw HCI sockets message input routine 557 */ 558 559 static void 560 ng_btsocket_hci_raw_msg_input(struct ng_mesg *msg) 561 { 562 ng_btsocket_hci_raw_pcb_p pcb = NULL; 563 564 mtx_lock(&ng_btsocket_hci_raw_sockets_mtx); 565 566 LIST_FOREACH(pcb, &ng_btsocket_hci_raw_sockets, next) { 567 mtx_lock(&pcb->pcb_mtx); 568 569 if (msg->header.token == pcb->token) { 570 pcb->msg = msg; 571 wakeup(&pcb->msg); 572 573 mtx_unlock(&pcb->pcb_mtx); 574 mtx_unlock(&ng_btsocket_hci_raw_sockets_mtx); 575 576 return; 577 } 578 579 mtx_unlock(&pcb->pcb_mtx); 580 } 581 582 mtx_unlock(&ng_btsocket_hci_raw_sockets_mtx); 583 584 NG_FREE_MSG(msg); /* checks for != NULL */ 585 } /* ng_btsocket_hci_raw_msg_input */ 586 587 /* 588 * Raw HCI sockets input routines 589 */ 590 591 static void 592 ng_btsocket_hci_raw_input(void *context, int pending) 593 { 594 item_p item = NULL; 595 596 for (;;) { 597 mtx_lock(&ng_btsocket_hci_raw_queue_mtx); 598 NG_BT_ITEMQ_DEQUEUE(&ng_btsocket_hci_raw_queue, item); 599 mtx_unlock(&ng_btsocket_hci_raw_queue_mtx); 600 601 if (item == NULL) 602 break; 603 604 switch(item->el_flags & NGQF_TYPE) { 605 case NGQF_DATA: { 606 struct mbuf *m = NULL; 607 608 NGI_GET_M(item, m); 609 ng_btsocket_hci_raw_data_input(m); 610 } break; 611 612 case NGQF_MESG: { 613 struct ng_mesg *msg = NULL; 614 615 NGI_GET_MSG(item, msg); 616 ng_btsocket_hci_raw_msg_input(msg); 617 } break; 618 619 default: 620 KASSERT(0, 621 ("%s: invalid item type=%ld\n", __func__, (item->el_flags & NGQF_TYPE))); 622 break; 623 } 624 625 NG_FREE_ITEM(item); 626 } 627 } /* ng_btsocket_hci_raw_input */ 628 629 /* 630 * Raw HCI sockets output routine 631 */ 632 633 static void 634 ng_btsocket_hci_raw_output(node_p node, hook_p hook, void *arg1, int arg2) 635 { 636 struct mbuf *nam = (struct mbuf *) arg1, *m = NULL; 637 struct sockaddr_hci *sa = NULL; 638 int error; 639 640 m = nam->m_next; 641 nam->m_next = NULL; 642 643 KASSERT((nam->m_type == MT_SONAME), 644 ("%s: m_type=%d\n", __func__, nam->m_type)); 645 KASSERT((m->m_flags & M_PKTHDR), 646 ("%s: m_flags=%#x\n", __func__, m->m_flags)); 647 648 sa = mtod(nam, struct sockaddr_hci *); 649 650 /* 651 * Find downstream hook 652 * XXX For now access node hook list directly. Should be safe because 653 * we used ng_send_fn() and we should have exclusive lock on the node. 654 */ 655 656 LIST_FOREACH(hook, &node->nd_hooks, hk_hooks) { 657 if (hook == NULL || NG_HOOK_NOT_VALID(hook) || 658 NG_NODE_NOT_VALID(NG_PEER_NODE(hook))) 659 continue; 660 661 if (strcmp(sa->hci_node, NG_PEER_NODE_NAME(hook)) == 0) { 662 NG_SEND_DATA_ONLY(error, hook, m); /* sets m to NULL */ 663 break; 664 } 665 } 666 667 NG_FREE_M(nam); /* check for != NULL */ 668 NG_FREE_M(m); 669 } /* ng_btsocket_hci_raw_output */ 670 671 /* 672 * Check frame against security and socket filters. 673 * d (direction bit) == 1 means incoming frame. 674 */ 675 676 static int 677 ng_btsocket_hci_raw_filter(ng_btsocket_hci_raw_pcb_p pcb, struct mbuf *m, int d) 678 { 679 int type, event, opcode; 680 681 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 682 683 switch ((type = *mtod(m, u_int8_t *))) { 684 case NG_HCI_CMD_PKT: 685 if (!(pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED)) { 686 opcode = le16toh(mtod(m, ng_hci_cmd_pkt_t *)->opcode); 687 688 if (!bit_test( 689 ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF(opcode) - 1], 690 NG_HCI_OCF(opcode) - 1)) 691 return (EPERM); 692 } 693 694 if (d && !bit_test(pcb->filter.packet_mask, NG_HCI_CMD_PKT - 1)) 695 return (EPERM); 696 break; 697 698 case NG_HCI_ACL_DATA_PKT: 699 case NG_HCI_SCO_DATA_PKT: 700 if (!(pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) || 701 !bit_test(pcb->filter.packet_mask, type - 1) || 702 !d) 703 return (EPERM); 704 break; 705 706 case NG_HCI_EVENT_PKT: 707 if (!d) 708 return (EINVAL); 709 710 event = mtod(m, ng_hci_event_pkt_t *)->event - 1; 711 712 if (!(pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED)) 713 if (!bit_test(ng_btsocket_hci_raw_sec_filter->events, event)) 714 return (EPERM); 715 716 if (!bit_test(pcb->filter.event_mask, event)) 717 return (EPERM); 718 break; 719 720 default: 721 return (EINVAL); 722 } 723 724 return (0); 725 } /* ng_btsocket_hci_raw_filter */ 726 727 /* 728 * Initialize everything 729 */ 730 731 void 732 ng_btsocket_hci_raw_init(void) 733 { 734 bitstr_t *f = NULL; 735 int error = 0; 736 737 /* Skip initialization of globals for non-default instances. */ 738 if (!IS_DEFAULT_VNET(curvnet)) 739 return; 740 741 ng_btsocket_hci_raw_node = NULL; 742 ng_btsocket_hci_raw_debug_level = NG_BTSOCKET_WARN_LEVEL; 743 ng_btsocket_hci_raw_ioctl_timeout = 5; 744 745 /* Register Netgraph node type */ 746 error = ng_newtype(&typestruct); 747 if (error != 0) { 748 NG_BTSOCKET_HCI_RAW_ALERT( 749 "%s: Could not register Netgraph node type, error=%d\n", __func__, error); 750 751 return; 752 } 753 754 /* Create Netgrapg node */ 755 error = ng_make_node_common(&typestruct, &ng_btsocket_hci_raw_node); 756 if (error != 0) { 757 NG_BTSOCKET_HCI_RAW_ALERT( 758 "%s: Could not create Netgraph node, error=%d\n", __func__, error); 759 760 ng_btsocket_hci_raw_node = NULL; 761 762 return; 763 } 764 765 error = ng_name_node(ng_btsocket_hci_raw_node, 766 NG_BTSOCKET_HCI_RAW_NODE_TYPE); 767 if (error != 0) { 768 NG_BTSOCKET_HCI_RAW_ALERT( 769 "%s: Could not name Netgraph node, error=%d\n", __func__, error); 770 771 NG_NODE_UNREF(ng_btsocket_hci_raw_node); 772 ng_btsocket_hci_raw_node = NULL; 773 774 return; 775 } 776 777 /* Create input queue */ 778 NG_BT_ITEMQ_INIT(&ng_btsocket_hci_raw_queue, 300); 779 mtx_init(&ng_btsocket_hci_raw_queue_mtx, 780 "btsocks_hci_raw_queue_mtx", NULL, MTX_DEF); 781 TASK_INIT(&ng_btsocket_hci_raw_task, 0, 782 ng_btsocket_hci_raw_input, NULL); 783 784 /* Create list of sockets */ 785 LIST_INIT(&ng_btsocket_hci_raw_sockets); 786 mtx_init(&ng_btsocket_hci_raw_sockets_mtx, 787 "btsocks_hci_raw_sockets_mtx", NULL, MTX_DEF); 788 789 /* Tokens */ 790 ng_btsocket_hci_raw_token = 0; 791 mtx_init(&ng_btsocket_hci_raw_token_mtx, 792 "btsocks_hci_raw_token_mtx", NULL, MTX_DEF); 793 794 /* 795 * Security filter 796 * XXX never free()ed 797 */ 798 ng_btsocket_hci_raw_sec_filter = 799 malloc(sizeof(struct ng_btsocket_hci_raw_sec_filter), 800 M_NETGRAPH_BTSOCKET_HCI_RAW, M_NOWAIT|M_ZERO); 801 if (ng_btsocket_hci_raw_sec_filter == NULL) { 802 printf("%s: Could not allocate security filter!\n", __func__); 803 return; 804 } 805 806 /* 807 * XXX How paranoid can we get? 808 * 809 * Initialize security filter. If bit is set in the mask then 810 * unprivileged socket is allowed to send (receive) this command 811 * (event). 812 */ 813 814 /* Enable all events */ 815 memset(&ng_btsocket_hci_raw_sec_filter->events, 0xff, 816 sizeof(ng_btsocket_hci_raw_sec_filter->events)/ 817 sizeof(ng_btsocket_hci_raw_sec_filter->events[0])); 818 819 /* Disable some critical events */ 820 f = ng_btsocket_hci_raw_sec_filter->events; 821 bit_clear(f, NG_HCI_EVENT_RETURN_LINK_KEYS - 1); 822 bit_clear(f, NG_HCI_EVENT_LINK_KEY_NOTIFICATION - 1); 823 bit_clear(f, NG_HCI_EVENT_VENDOR - 1); 824 825 /* Commands - Link control */ 826 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_LINK_CONTROL-1]; 827 bit_set(f, NG_HCI_OCF_INQUIRY - 1); 828 bit_set(f, NG_HCI_OCF_INQUIRY_CANCEL - 1); 829 bit_set(f, NG_HCI_OCF_PERIODIC_INQUIRY - 1); 830 bit_set(f, NG_HCI_OCF_EXIT_PERIODIC_INQUIRY - 1); 831 bit_set(f, NG_HCI_OCF_REMOTE_NAME_REQ - 1); 832 bit_set(f, NG_HCI_OCF_READ_REMOTE_FEATURES - 1); 833 bit_set(f, NG_HCI_OCF_READ_REMOTE_VER_INFO - 1); 834 bit_set(f, NG_HCI_OCF_READ_CLOCK_OFFSET - 1); 835 836 /* Commands - Link policy */ 837 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_LINK_POLICY-1]; 838 bit_set(f, NG_HCI_OCF_ROLE_DISCOVERY - 1); 839 bit_set(f, NG_HCI_OCF_READ_LINK_POLICY_SETTINGS - 1); 840 841 /* Commands - Host controller and baseband */ 842 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_HC_BASEBAND-1]; 843 bit_set(f, NG_HCI_OCF_READ_PIN_TYPE - 1); 844 bit_set(f, NG_HCI_OCF_READ_LOCAL_NAME - 1); 845 bit_set(f, NG_HCI_OCF_READ_CON_ACCEPT_TIMO - 1); 846 bit_set(f, NG_HCI_OCF_READ_PAGE_TIMO - 1); 847 bit_set(f, NG_HCI_OCF_READ_SCAN_ENABLE - 1); 848 bit_set(f, NG_HCI_OCF_READ_PAGE_SCAN_ACTIVITY - 1); 849 bit_set(f, NG_HCI_OCF_READ_INQUIRY_SCAN_ACTIVITY - 1); 850 bit_set(f, NG_HCI_OCF_READ_AUTH_ENABLE - 1); 851 bit_set(f, NG_HCI_OCF_READ_ENCRYPTION_MODE - 1); 852 bit_set(f, NG_HCI_OCF_READ_UNIT_CLASS - 1); 853 bit_set(f, NG_HCI_OCF_READ_VOICE_SETTINGS - 1); 854 bit_set(f, NG_HCI_OCF_READ_AUTO_FLUSH_TIMO - 1); 855 bit_set(f, NG_HCI_OCF_READ_NUM_BROADCAST_RETRANS - 1); 856 bit_set(f, NG_HCI_OCF_READ_HOLD_MODE_ACTIVITY - 1); 857 bit_set(f, NG_HCI_OCF_READ_XMIT_LEVEL - 1); 858 bit_set(f, NG_HCI_OCF_READ_SCO_FLOW_CONTROL - 1); 859 bit_set(f, NG_HCI_OCF_READ_LINK_SUPERVISION_TIMO - 1); 860 bit_set(f, NG_HCI_OCF_READ_SUPPORTED_IAC_NUM - 1); 861 bit_set(f, NG_HCI_OCF_READ_IAC_LAP - 1); 862 bit_set(f, NG_HCI_OCF_READ_PAGE_SCAN_PERIOD - 1); 863 bit_set(f, NG_HCI_OCF_READ_PAGE_SCAN - 1); 864 bit_set(f, NG_HCI_OCF_READ_LE_HOST_SUPPORTED -1); 865 866 /* Commands - Informational */ 867 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_INFO - 1]; 868 bit_set(f, NG_HCI_OCF_READ_LOCAL_VER - 1); 869 bit_set(f, NG_HCI_OCF_READ_LOCAL_FEATURES - 1); 870 bit_set(f, NG_HCI_OCF_READ_BUFFER_SIZE - 1); 871 bit_set(f, NG_HCI_OCF_READ_COUNTRY_CODE - 1); 872 bit_set(f, NG_HCI_OCF_READ_BDADDR - 1); 873 874 /* Commands - Status */ 875 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_STATUS - 1]; 876 bit_set(f, NG_HCI_OCF_READ_FAILED_CONTACT_CNTR - 1); 877 bit_set(f, NG_HCI_OCF_GET_LINK_QUALITY - 1); 878 bit_set(f, NG_HCI_OCF_READ_RSSI - 1); 879 880 /* Commands - Testing */ 881 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_TESTING - 1]; 882 bit_set(f, NG_HCI_OCF_READ_LOOPBACK_MODE - 1); 883 /*Commands - LE*/ 884 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_LE -1]; 885 bit_set(f, NG_HCI_OCF_LE_SET_SCAN_ENABLE - 1); 886 bit_set(f, NG_HCI_OCF_LE_SET_SCAN_PARAMETERS - 1); 887 bit_set(f, NG_HCI_OCF_LE_READ_LOCAL_SUPPORTED_FEATURES - 1); 888 bit_set(f, NG_HCI_OCF_LE_READ_BUFFER_SIZE - 1); 889 bit_set(f, NG_HCI_OCF_LE_READ_WHITE_LIST_SIZE - 1); 890 891 } /* ng_btsocket_hci_raw_init */ 892 893 /* 894 * Abort connection on socket 895 */ 896 897 void 898 ng_btsocket_hci_raw_abort(struct socket *so) 899 { 900 } /* ng_btsocket_hci_raw_abort */ 901 902 void 903 ng_btsocket_hci_raw_close(struct socket *so) 904 { 905 } /* ng_btsocket_hci_raw_close */ 906 907 /* 908 * Create new raw HCI socket 909 */ 910 911 int 912 ng_btsocket_hci_raw_attach(struct socket *so, int proto, struct thread *td) 913 { 914 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 915 int error = 0; 916 917 if (pcb != NULL) 918 return (EISCONN); 919 920 if (ng_btsocket_hci_raw_node == NULL) 921 return (EPROTONOSUPPORT); 922 if (proto != BLUETOOTH_PROTO_HCI) 923 return (EPROTONOSUPPORT); 924 if (so->so_type != SOCK_RAW) 925 return (ESOCKTNOSUPPORT); 926 927 error = soreserve(so, NG_BTSOCKET_HCI_RAW_SENDSPACE, 928 NG_BTSOCKET_HCI_RAW_RECVSPACE); 929 if (error != 0) 930 return (error); 931 932 pcb = malloc(sizeof(*pcb), 933 M_NETGRAPH_BTSOCKET_HCI_RAW, M_NOWAIT|M_ZERO); 934 if (pcb == NULL) 935 return (ENOMEM); 936 937 so->so_pcb = (caddr_t) pcb; 938 pcb->so = so; 939 940 if (priv_check(td, PRIV_NETBLUETOOTH_RAW) == 0) 941 pcb->flags |= NG_BTSOCKET_HCI_RAW_PRIVILEGED; 942 943 /* 944 * Set default socket filter. By default socket only accepts HCI 945 * Command_Complete and Command_Status event packets. 946 */ 947 948 bit_set(pcb->filter.event_mask, NG_HCI_EVENT_COMMAND_COMPL - 1); 949 bit_set(pcb->filter.event_mask, NG_HCI_EVENT_COMMAND_STATUS - 1); 950 951 mtx_init(&pcb->pcb_mtx, "btsocks_hci_raw_pcb_mtx", NULL, MTX_DEF); 952 953 mtx_lock(&ng_btsocket_hci_raw_sockets_mtx); 954 LIST_INSERT_HEAD(&ng_btsocket_hci_raw_sockets, pcb, next); 955 mtx_unlock(&ng_btsocket_hci_raw_sockets_mtx); 956 957 return (0); 958 } /* ng_btsocket_hci_raw_attach */ 959 960 /* 961 * Bind raw HCI socket 962 */ 963 964 int 965 ng_btsocket_hci_raw_bind(struct socket *so, struct sockaddr *nam, 966 struct thread *td) 967 { 968 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 969 struct sockaddr_hci *sa = (struct sockaddr_hci *) nam; 970 971 if (pcb == NULL) 972 return (EINVAL); 973 if (ng_btsocket_hci_raw_node == NULL) 974 return (EINVAL); 975 976 if (sa == NULL) 977 return (EINVAL); 978 if (sa->hci_family != AF_BLUETOOTH) 979 return (EAFNOSUPPORT); 980 if (sa->hci_len != sizeof(*sa)) 981 return (EINVAL); 982 if (sa->hci_node[0] == 0) 983 return (EINVAL); 984 985 mtx_lock(&pcb->pcb_mtx); 986 bcopy(sa, &pcb->addr, sizeof(pcb->addr)); 987 mtx_unlock(&pcb->pcb_mtx); 988 989 return (0); 990 } /* ng_btsocket_hci_raw_bind */ 991 992 /* 993 * Connect raw HCI socket 994 */ 995 996 int 997 ng_btsocket_hci_raw_connect(struct socket *so, struct sockaddr *nam, 998 struct thread *td) 999 { 1000 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1001 struct sockaddr_hci *sa = (struct sockaddr_hci *) nam; 1002 1003 if (pcb == NULL) 1004 return (EINVAL); 1005 if (ng_btsocket_hci_raw_node == NULL) 1006 return (EINVAL); 1007 1008 if (sa == NULL) 1009 return (EINVAL); 1010 if (sa->hci_family != AF_BLUETOOTH) 1011 return (EAFNOSUPPORT); 1012 if (sa->hci_len != sizeof(*sa)) 1013 return (EINVAL); 1014 if (sa->hci_node[0] == 0) 1015 return (EDESTADDRREQ); 1016 1017 mtx_lock(&pcb->pcb_mtx); 1018 1019 if (bcmp(sa, &pcb->addr, sizeof(pcb->addr)) != 0) { 1020 mtx_unlock(&pcb->pcb_mtx); 1021 return (EADDRNOTAVAIL); 1022 } 1023 1024 soisconnected(so); 1025 1026 mtx_unlock(&pcb->pcb_mtx); 1027 1028 return (0); 1029 } /* ng_btsocket_hci_raw_connect */ 1030 1031 /* 1032 * Process ioctl on socket 1033 */ 1034 1035 int 1036 ng_btsocket_hci_raw_control(struct socket *so, u_long cmd, caddr_t data, 1037 struct ifnet *ifp, struct thread *td) 1038 { 1039 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1040 char path[NG_NODESIZ + 1]; 1041 struct ng_mesg *msg = NULL; 1042 int error = 0; 1043 1044 if (pcb == NULL) 1045 return (EINVAL); 1046 if (ng_btsocket_hci_raw_node == NULL) 1047 return (EINVAL); 1048 1049 mtx_lock(&pcb->pcb_mtx); 1050 1051 /* Check if we have device name */ 1052 if (pcb->addr.hci_node[0] == 0) { 1053 mtx_unlock(&pcb->pcb_mtx); 1054 return (EHOSTUNREACH); 1055 } 1056 1057 /* Check if we have pending ioctl() */ 1058 if (pcb->token != 0) { 1059 mtx_unlock(&pcb->pcb_mtx); 1060 return (EBUSY); 1061 } 1062 1063 snprintf(path, sizeof(path), "%s:", pcb->addr.hci_node); 1064 1065 switch (cmd) { 1066 case SIOC_HCI_RAW_NODE_GET_STATE: { 1067 struct ng_btsocket_hci_raw_node_state *p = 1068 (struct ng_btsocket_hci_raw_node_state *) data; 1069 1070 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1071 NGM_HCI_NODE_GET_STATE, 1072 &p->state, sizeof(p->state)); 1073 } break; 1074 1075 case SIOC_HCI_RAW_NODE_INIT: 1076 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1077 error = ng_btsocket_hci_raw_send_ngmsg(path, 1078 NGM_HCI_NODE_INIT, NULL, 0); 1079 else 1080 error = EPERM; 1081 break; 1082 1083 case SIOC_HCI_RAW_NODE_GET_DEBUG: { 1084 struct ng_btsocket_hci_raw_node_debug *p = 1085 (struct ng_btsocket_hci_raw_node_debug *) data; 1086 1087 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1088 NGM_HCI_NODE_GET_DEBUG, 1089 &p->debug, sizeof(p->debug)); 1090 } break; 1091 1092 case SIOC_HCI_RAW_NODE_SET_DEBUG: { 1093 struct ng_btsocket_hci_raw_node_debug *p = 1094 (struct ng_btsocket_hci_raw_node_debug *) data; 1095 1096 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1097 error = ng_btsocket_hci_raw_send_ngmsg(path, 1098 NGM_HCI_NODE_SET_DEBUG, &p->debug, 1099 sizeof(p->debug)); 1100 else 1101 error = EPERM; 1102 } break; 1103 1104 case SIOC_HCI_RAW_NODE_GET_BUFFER: { 1105 struct ng_btsocket_hci_raw_node_buffer *p = 1106 (struct ng_btsocket_hci_raw_node_buffer *) data; 1107 1108 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1109 NGM_HCI_NODE_GET_BUFFER, 1110 &p->buffer, sizeof(p->buffer)); 1111 } break; 1112 1113 case SIOC_HCI_RAW_NODE_GET_BDADDR: { 1114 struct ng_btsocket_hci_raw_node_bdaddr *p = 1115 (struct ng_btsocket_hci_raw_node_bdaddr *) data; 1116 1117 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1118 NGM_HCI_NODE_GET_BDADDR, 1119 &p->bdaddr, sizeof(p->bdaddr)); 1120 } break; 1121 1122 case SIOC_HCI_RAW_NODE_GET_FEATURES: { 1123 struct ng_btsocket_hci_raw_node_features *p = 1124 (struct ng_btsocket_hci_raw_node_features *) data; 1125 1126 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1127 NGM_HCI_NODE_GET_FEATURES, 1128 &p->features, sizeof(p->features)); 1129 } break; 1130 1131 case SIOC_HCI_RAW_NODE_GET_STAT: { 1132 struct ng_btsocket_hci_raw_node_stat *p = 1133 (struct ng_btsocket_hci_raw_node_stat *) data; 1134 1135 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1136 NGM_HCI_NODE_GET_STAT, 1137 &p->stat, sizeof(p->stat)); 1138 } break; 1139 1140 case SIOC_HCI_RAW_NODE_RESET_STAT: 1141 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1142 error = ng_btsocket_hci_raw_send_ngmsg(path, 1143 NGM_HCI_NODE_RESET_STAT, NULL, 0); 1144 else 1145 error = EPERM; 1146 break; 1147 1148 case SIOC_HCI_RAW_NODE_FLUSH_NEIGHBOR_CACHE: 1149 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1150 error = ng_btsocket_hci_raw_send_ngmsg(path, 1151 NGM_HCI_NODE_FLUSH_NEIGHBOR_CACHE, 1152 NULL, 0); 1153 else 1154 error = EPERM; 1155 break; 1156 1157 case SIOC_HCI_RAW_NODE_GET_NEIGHBOR_CACHE: { 1158 struct ng_btsocket_hci_raw_node_neighbor_cache *p = 1159 (struct ng_btsocket_hci_raw_node_neighbor_cache *) data; 1160 ng_hci_node_get_neighbor_cache_ep *p1 = NULL; 1161 ng_hci_node_neighbor_cache_entry_ep *p2 = NULL; 1162 1163 if (p->num_entries <= 0 || 1164 p->num_entries > NG_HCI_MAX_NEIGHBOR_NUM || 1165 p->entries == NULL) { 1166 mtx_unlock(&pcb->pcb_mtx); 1167 return (EINVAL); 1168 } 1169 1170 NG_MKMESSAGE(msg, NGM_HCI_COOKIE, 1171 NGM_HCI_NODE_GET_NEIGHBOR_CACHE, 0, M_NOWAIT); 1172 if (msg == NULL) { 1173 mtx_unlock(&pcb->pcb_mtx); 1174 return (ENOMEM); 1175 } 1176 ng_btsocket_hci_raw_get_token(&msg->header.token); 1177 pcb->token = msg->header.token; 1178 pcb->msg = NULL; 1179 1180 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, path, 0); 1181 if (error != 0) { 1182 pcb->token = 0; 1183 mtx_unlock(&pcb->pcb_mtx); 1184 return (error); 1185 } 1186 1187 error = msleep(&pcb->msg, &pcb->pcb_mtx, 1188 PZERO|PCATCH, "hcictl", 1189 ng_btsocket_hci_raw_ioctl_timeout * hz); 1190 pcb->token = 0; 1191 1192 if (error != 0) { 1193 mtx_unlock(&pcb->pcb_mtx); 1194 return (error); 1195 } 1196 1197 msg = pcb->msg; 1198 pcb->msg = NULL; 1199 1200 mtx_unlock(&pcb->pcb_mtx); 1201 1202 if (msg != NULL && 1203 msg->header.cmd == NGM_HCI_NODE_GET_NEIGHBOR_CACHE) { 1204 /* Return data back to user space */ 1205 p1 = (ng_hci_node_get_neighbor_cache_ep *)(msg->data); 1206 p2 = (ng_hci_node_neighbor_cache_entry_ep *)(p1 + 1); 1207 1208 p->num_entries = min(p->num_entries, p1->num_entries); 1209 if (p->num_entries > 0) 1210 error = copyout((caddr_t) p2, 1211 (caddr_t) p->entries, 1212 p->num_entries * sizeof(*p2)); 1213 } else 1214 error = EINVAL; 1215 1216 NG_FREE_MSG(msg); /* checks for != NULL */ 1217 return (error); 1218 } /* NOTREACHED */ 1219 1220 case SIOC_HCI_RAW_NODE_GET_CON_LIST: { 1221 struct ng_btsocket_hci_raw_con_list *p = 1222 (struct ng_btsocket_hci_raw_con_list *) data; 1223 ng_hci_node_con_list_ep *p1 = NULL; 1224 ng_hci_node_con_ep *p2 = NULL; 1225 1226 if (p->num_connections == 0 || 1227 p->num_connections > NG_HCI_MAX_CON_NUM || 1228 p->connections == NULL) { 1229 mtx_unlock(&pcb->pcb_mtx); 1230 return (EINVAL); 1231 } 1232 1233 NG_MKMESSAGE(msg, NGM_HCI_COOKIE, NGM_HCI_NODE_GET_CON_LIST, 1234 0, M_NOWAIT); 1235 if (msg == NULL) { 1236 mtx_unlock(&pcb->pcb_mtx); 1237 return (ENOMEM); 1238 } 1239 ng_btsocket_hci_raw_get_token(&msg->header.token); 1240 pcb->token = msg->header.token; 1241 pcb->msg = NULL; 1242 1243 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, path, 0); 1244 if (error != 0) { 1245 pcb->token = 0; 1246 mtx_unlock(&pcb->pcb_mtx); 1247 return (error); 1248 } 1249 1250 error = msleep(&pcb->msg, &pcb->pcb_mtx, 1251 PZERO|PCATCH, "hcictl", 1252 ng_btsocket_hci_raw_ioctl_timeout * hz); 1253 pcb->token = 0; 1254 1255 if (error != 0) { 1256 mtx_unlock(&pcb->pcb_mtx); 1257 return (error); 1258 } 1259 1260 msg = pcb->msg; 1261 pcb->msg = NULL; 1262 1263 mtx_unlock(&pcb->pcb_mtx); 1264 1265 if (msg != NULL && 1266 msg->header.cmd == NGM_HCI_NODE_GET_CON_LIST) { 1267 /* Return data back to user space */ 1268 p1 = (ng_hci_node_con_list_ep *)(msg->data); 1269 p2 = (ng_hci_node_con_ep *)(p1 + 1); 1270 1271 p->num_connections = min(p->num_connections, 1272 p1->num_connections); 1273 if (p->num_connections > 0) 1274 error = copyout((caddr_t) p2, 1275 (caddr_t) p->connections, 1276 p->num_connections * sizeof(*p2)); 1277 } else 1278 error = EINVAL; 1279 1280 NG_FREE_MSG(msg); /* checks for != NULL */ 1281 return (error); 1282 } /* NOTREACHED */ 1283 1284 case SIOC_HCI_RAW_NODE_GET_LINK_POLICY_MASK: { 1285 struct ng_btsocket_hci_raw_node_link_policy_mask *p = 1286 (struct ng_btsocket_hci_raw_node_link_policy_mask *) 1287 data; 1288 1289 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1290 NGM_HCI_NODE_GET_LINK_POLICY_SETTINGS_MASK, 1291 &p->policy_mask, sizeof(p->policy_mask)); 1292 } break; 1293 1294 case SIOC_HCI_RAW_NODE_SET_LINK_POLICY_MASK: { 1295 struct ng_btsocket_hci_raw_node_link_policy_mask *p = 1296 (struct ng_btsocket_hci_raw_node_link_policy_mask *) 1297 data; 1298 1299 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1300 error = ng_btsocket_hci_raw_send_ngmsg(path, 1301 NGM_HCI_NODE_SET_LINK_POLICY_SETTINGS_MASK, 1302 &p->policy_mask, 1303 sizeof(p->policy_mask)); 1304 else 1305 error = EPERM; 1306 } break; 1307 1308 case SIOC_HCI_RAW_NODE_GET_PACKET_MASK: { 1309 struct ng_btsocket_hci_raw_node_packet_mask *p = 1310 (struct ng_btsocket_hci_raw_node_packet_mask *) data; 1311 1312 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1313 NGM_HCI_NODE_GET_PACKET_MASK, 1314 &p->packet_mask, sizeof(p->packet_mask)); 1315 } break; 1316 1317 case SIOC_HCI_RAW_NODE_SET_PACKET_MASK: { 1318 struct ng_btsocket_hci_raw_node_packet_mask *p = 1319 (struct ng_btsocket_hci_raw_node_packet_mask *) data; 1320 1321 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1322 error = ng_btsocket_hci_raw_send_ngmsg(path, 1323 NGM_HCI_NODE_SET_PACKET_MASK, 1324 &p->packet_mask, 1325 sizeof(p->packet_mask)); 1326 else 1327 error = EPERM; 1328 } break; 1329 1330 case SIOC_HCI_RAW_NODE_GET_ROLE_SWITCH: { 1331 struct ng_btsocket_hci_raw_node_role_switch *p = 1332 (struct ng_btsocket_hci_raw_node_role_switch *) data; 1333 1334 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1335 NGM_HCI_NODE_GET_ROLE_SWITCH, 1336 &p->role_switch, sizeof(p->role_switch)); 1337 } break; 1338 1339 case SIOC_HCI_RAW_NODE_SET_ROLE_SWITCH: { 1340 struct ng_btsocket_hci_raw_node_role_switch *p = 1341 (struct ng_btsocket_hci_raw_node_role_switch *) data; 1342 1343 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1344 error = ng_btsocket_hci_raw_send_ngmsg(path, 1345 NGM_HCI_NODE_SET_ROLE_SWITCH, 1346 &p->role_switch, 1347 sizeof(p->role_switch)); 1348 else 1349 error = EPERM; 1350 } break; 1351 1352 case SIOC_HCI_RAW_NODE_LIST_NAMES: { 1353 struct ng_btsocket_hci_raw_node_list_names *nl = 1354 (struct ng_btsocket_hci_raw_node_list_names *) data; 1355 struct nodeinfo *ni = nl->names; 1356 1357 if (nl->num_names == 0) { 1358 mtx_unlock(&pcb->pcb_mtx); 1359 return (EINVAL); 1360 } 1361 1362 NG_MKMESSAGE(msg, NGM_GENERIC_COOKIE, NGM_LISTNAMES, 1363 0, M_NOWAIT); 1364 if (msg == NULL) { 1365 mtx_unlock(&pcb->pcb_mtx); 1366 return (ENOMEM); 1367 } 1368 ng_btsocket_hci_raw_get_token(&msg->header.token); 1369 pcb->token = msg->header.token; 1370 pcb->msg = NULL; 1371 1372 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, ".:", 0); 1373 if (error != 0) { 1374 pcb->token = 0; 1375 mtx_unlock(&pcb->pcb_mtx); 1376 return (error); 1377 } 1378 1379 error = msleep(&pcb->msg, &pcb->pcb_mtx, 1380 PZERO|PCATCH, "hcictl", 1381 ng_btsocket_hci_raw_ioctl_timeout * hz); 1382 pcb->token = 0; 1383 1384 if (error != 0) { 1385 mtx_unlock(&pcb->pcb_mtx); 1386 return (error); 1387 } 1388 1389 msg = pcb->msg; 1390 pcb->msg = NULL; 1391 1392 mtx_unlock(&pcb->pcb_mtx); 1393 1394 if (msg != NULL && msg->header.cmd == NGM_LISTNAMES) { 1395 /* Return data back to user space */ 1396 struct namelist *nl1 = (struct namelist *) msg->data; 1397 struct nodeinfo *ni1 = &nl1->nodeinfo[0]; 1398 1399 while (nl->num_names > 0 && nl1->numnames > 0) { 1400 if (strcmp(ni1->type, NG_HCI_NODE_TYPE) == 0) { 1401 error = copyout((caddr_t) ni1, 1402 (caddr_t) ni, 1403 sizeof(*ni)); 1404 if (error != 0) 1405 break; 1406 1407 nl->num_names --; 1408 ni ++; 1409 } 1410 1411 nl1->numnames --; 1412 ni1 ++; 1413 } 1414 1415 nl->num_names = ni - nl->names; 1416 } else 1417 error = EINVAL; 1418 1419 NG_FREE_MSG(msg); /* checks for != NULL */ 1420 return (error); 1421 } /* NOTREACHED */ 1422 1423 default: 1424 error = EINVAL; 1425 break; 1426 } 1427 1428 mtx_unlock(&pcb->pcb_mtx); 1429 1430 return (error); 1431 } /* ng_btsocket_hci_raw_control */ 1432 1433 /* 1434 * Process getsockopt/setsockopt system calls 1435 */ 1436 1437 int 1438 ng_btsocket_hci_raw_ctloutput(struct socket *so, struct sockopt *sopt) 1439 { 1440 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1441 struct ng_btsocket_hci_raw_filter filter; 1442 int error = 0, dir; 1443 1444 if (pcb == NULL) 1445 return (EINVAL); 1446 if (ng_btsocket_hci_raw_node == NULL) 1447 return (EINVAL); 1448 1449 if (sopt->sopt_level != SOL_HCI_RAW) 1450 return (0); 1451 1452 mtx_lock(&pcb->pcb_mtx); 1453 1454 switch (sopt->sopt_dir) { 1455 case SOPT_GET: 1456 switch (sopt->sopt_name) { 1457 case SO_HCI_RAW_FILTER: 1458 error = sooptcopyout(sopt, &pcb->filter, 1459 sizeof(pcb->filter)); 1460 break; 1461 1462 case SO_HCI_RAW_DIRECTION: 1463 dir = (pcb->flags & NG_BTSOCKET_HCI_RAW_DIRECTION)?1:0; 1464 error = sooptcopyout(sopt, &dir, sizeof(dir)); 1465 break; 1466 1467 default: 1468 error = EINVAL; 1469 break; 1470 } 1471 break; 1472 1473 case SOPT_SET: 1474 switch (sopt->sopt_name) { 1475 case SO_HCI_RAW_FILTER: 1476 error = sooptcopyin(sopt, &filter, sizeof(filter), 1477 sizeof(filter)); 1478 if (error == 0) 1479 bcopy(&filter, &pcb->filter, 1480 sizeof(pcb->filter)); 1481 break; 1482 1483 case SO_HCI_RAW_DIRECTION: 1484 error = sooptcopyin(sopt, &dir, sizeof(dir), 1485 sizeof(dir)); 1486 if (error != 0) 1487 break; 1488 1489 if (dir) 1490 pcb->flags |= NG_BTSOCKET_HCI_RAW_DIRECTION; 1491 else 1492 pcb->flags &= ~NG_BTSOCKET_HCI_RAW_DIRECTION; 1493 break; 1494 1495 default: 1496 error = EINVAL; 1497 break; 1498 } 1499 break; 1500 1501 default: 1502 error = EINVAL; 1503 break; 1504 } 1505 1506 mtx_unlock(&pcb->pcb_mtx); 1507 1508 return (error); 1509 } /* ng_btsocket_hci_raw_ctloutput */ 1510 1511 /* 1512 * Detach raw HCI socket 1513 */ 1514 1515 void 1516 ng_btsocket_hci_raw_detach(struct socket *so) 1517 { 1518 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1519 1520 KASSERT(pcb != NULL, ("ng_btsocket_hci_raw_detach: pcb == NULL")); 1521 1522 if (ng_btsocket_hci_raw_node == NULL) 1523 return; 1524 1525 mtx_lock(&ng_btsocket_hci_raw_sockets_mtx); 1526 mtx_lock(&pcb->pcb_mtx); 1527 1528 LIST_REMOVE(pcb, next); 1529 1530 mtx_unlock(&pcb->pcb_mtx); 1531 mtx_unlock(&ng_btsocket_hci_raw_sockets_mtx); 1532 1533 mtx_destroy(&pcb->pcb_mtx); 1534 1535 bzero(pcb, sizeof(*pcb)); 1536 free(pcb, M_NETGRAPH_BTSOCKET_HCI_RAW); 1537 1538 so->so_pcb = NULL; 1539 } /* ng_btsocket_hci_raw_detach */ 1540 1541 /* 1542 * Disconnect raw HCI socket 1543 */ 1544 1545 int 1546 ng_btsocket_hci_raw_disconnect(struct socket *so) 1547 { 1548 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1549 1550 if (pcb == NULL) 1551 return (EINVAL); 1552 if (ng_btsocket_hci_raw_node == NULL) 1553 return (EINVAL); 1554 1555 mtx_lock(&pcb->pcb_mtx); 1556 soisdisconnected(so); 1557 mtx_unlock(&pcb->pcb_mtx); 1558 1559 return (0); 1560 } /* ng_btsocket_hci_raw_disconnect */ 1561 1562 /* 1563 * Get socket peer's address 1564 */ 1565 1566 int 1567 ng_btsocket_hci_raw_peeraddr(struct socket *so, struct sockaddr **nam) 1568 { 1569 return (ng_btsocket_hci_raw_sockaddr(so, nam)); 1570 } /* ng_btsocket_hci_raw_peeraddr */ 1571 1572 /* 1573 * Send data 1574 */ 1575 1576 int 1577 ng_btsocket_hci_raw_send(struct socket *so, int flags, struct mbuf *m, 1578 struct sockaddr *sa, struct mbuf *control, struct thread *td) 1579 { 1580 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1581 struct mbuf *nam = NULL; 1582 int error = 0; 1583 1584 if (ng_btsocket_hci_raw_node == NULL) { 1585 error = ENETDOWN; 1586 goto drop; 1587 } 1588 if (pcb == NULL) { 1589 error = EINVAL; 1590 goto drop; 1591 } 1592 if (control != NULL) { 1593 error = EINVAL; 1594 goto drop; 1595 } 1596 1597 if (m->m_pkthdr.len < sizeof(ng_hci_cmd_pkt_t) || 1598 m->m_pkthdr.len > sizeof(ng_hci_cmd_pkt_t) + NG_HCI_CMD_PKT_SIZE) { 1599 error = EMSGSIZE; 1600 goto drop; 1601 } 1602 1603 if (m->m_len < sizeof(ng_hci_cmd_pkt_t)) { 1604 if ((m = m_pullup(m, sizeof(ng_hci_cmd_pkt_t))) == NULL) { 1605 error = ENOBUFS; 1606 goto drop; 1607 } 1608 } 1609 if (*mtod(m, u_int8_t *) != NG_HCI_CMD_PKT) { 1610 error = ENOTSUP; 1611 goto drop; 1612 } 1613 1614 mtx_lock(&pcb->pcb_mtx); 1615 1616 error = ng_btsocket_hci_raw_filter(pcb, m, 0); 1617 if (error != 0) { 1618 mtx_unlock(&pcb->pcb_mtx); 1619 goto drop; 1620 } 1621 1622 if (sa == NULL) { 1623 if (pcb->addr.hci_node[0] == 0) { 1624 mtx_unlock(&pcb->pcb_mtx); 1625 error = EDESTADDRREQ; 1626 goto drop; 1627 } 1628 1629 sa = (struct sockaddr *) &pcb->addr; 1630 } 1631 1632 MGET(nam, M_NOWAIT, MT_SONAME); 1633 if (nam == NULL) { 1634 mtx_unlock(&pcb->pcb_mtx); 1635 error = ENOBUFS; 1636 goto drop; 1637 } 1638 1639 nam->m_len = sizeof(struct sockaddr_hci); 1640 bcopy(sa,mtod(nam, struct sockaddr_hci *),sizeof(struct sockaddr_hci)); 1641 1642 nam->m_next = m; 1643 m = NULL; 1644 1645 mtx_unlock(&pcb->pcb_mtx); 1646 1647 return (ng_send_fn(ng_btsocket_hci_raw_node, NULL, 1648 ng_btsocket_hci_raw_output, nam, 0)); 1649 drop: 1650 NG_FREE_M(control); /* NG_FREE_M checks for != NULL */ 1651 NG_FREE_M(nam); 1652 NG_FREE_M(m); 1653 1654 return (error); 1655 } /* ng_btsocket_hci_raw_send */ 1656 1657 /* 1658 * Get socket address 1659 */ 1660 1661 int 1662 ng_btsocket_hci_raw_sockaddr(struct socket *so, struct sockaddr **nam) 1663 { 1664 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1665 struct sockaddr_hci sa; 1666 1667 if (pcb == NULL) 1668 return (EINVAL); 1669 if (ng_btsocket_hci_raw_node == NULL) 1670 return (EINVAL); 1671 1672 bzero(&sa, sizeof(sa)); 1673 sa.hci_len = sizeof(sa); 1674 sa.hci_family = AF_BLUETOOTH; 1675 1676 mtx_lock(&pcb->pcb_mtx); 1677 strlcpy(sa.hci_node, pcb->addr.hci_node, sizeof(sa.hci_node)); 1678 mtx_unlock(&pcb->pcb_mtx); 1679 1680 *nam = sodupsockaddr((struct sockaddr *) &sa, M_NOWAIT); 1681 1682 return ((*nam == NULL)? ENOMEM : 0); 1683 } /* ng_btsocket_hci_raw_sockaddr */ 1684 1685