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 mtx_lock(&pcb->pcb_mtx); 503 504 /* 505 * If socket was bound then check address and 506 * make sure it matches. 507 */ 508 509 if (pcb->addr.hci_node[0] != 0 && 510 strcmp(sa->hci_node, pcb->addr.hci_node) != 0) 511 goto next; 512 513 /* 514 * Check packet against filters 515 * XXX do we have to call m_pullup() here? 516 */ 517 518 if (ng_btsocket_hci_raw_filter(pcb, m0, 1) != 0) 519 goto next; 520 521 /* 522 * Make a copy of the packet, append to the socket's 523 * receive queue and wakeup socket. sbappendaddr() 524 * will check if socket has enough buffer space. 525 */ 526 527 m = m_dup(m0, M_NOWAIT); 528 if (m != NULL) { 529 struct mbuf *ctl = NULL; 530 531 ng_btsocket_hci_raw_savctl(pcb, &ctl, m); 532 533 if (sbappendaddr(&pcb->so->so_rcv, 534 (struct sockaddr *) sa, m, ctl)) 535 sorwakeup(pcb->so); 536 else { 537 NG_BTSOCKET_HCI_RAW_INFO( 538 "%s: sbappendaddr() failed\n", __func__); 539 540 NG_FREE_M(m); 541 NG_FREE_M(ctl); 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 void 731 ng_btsocket_hci_raw_init(void) 732 { 733 bitstr_t *f = NULL; 734 int error = 0; 735 736 /* Skip initialization of globals for non-default instances. */ 737 if (!IS_DEFAULT_VNET(curvnet)) 738 return; 739 740 ng_btsocket_hci_raw_node = NULL; 741 ng_btsocket_hci_raw_debug_level = NG_BTSOCKET_WARN_LEVEL; 742 ng_btsocket_hci_raw_ioctl_timeout = 5; 743 744 /* Register Netgraph node type */ 745 error = ng_newtype(&typestruct); 746 if (error != 0) { 747 NG_BTSOCKET_HCI_RAW_ALERT( 748 "%s: Could not register Netgraph node type, error=%d\n", __func__, error); 749 750 return; 751 } 752 753 /* Create Netgrapg node */ 754 error = ng_make_node_common(&typestruct, &ng_btsocket_hci_raw_node); 755 if (error != 0) { 756 NG_BTSOCKET_HCI_RAW_ALERT( 757 "%s: Could not create Netgraph node, error=%d\n", __func__, error); 758 759 ng_btsocket_hci_raw_node = NULL; 760 761 return; 762 } 763 764 error = ng_name_node(ng_btsocket_hci_raw_node, 765 NG_BTSOCKET_HCI_RAW_NODE_TYPE); 766 if (error != 0) { 767 NG_BTSOCKET_HCI_RAW_ALERT( 768 "%s: Could not name Netgraph node, error=%d\n", __func__, error); 769 770 NG_NODE_UNREF(ng_btsocket_hci_raw_node); 771 ng_btsocket_hci_raw_node = NULL; 772 773 return; 774 } 775 776 /* Create input queue */ 777 NG_BT_ITEMQ_INIT(&ng_btsocket_hci_raw_queue, 300); 778 mtx_init(&ng_btsocket_hci_raw_queue_mtx, 779 "btsocks_hci_raw_queue_mtx", NULL, MTX_DEF); 780 TASK_INIT(&ng_btsocket_hci_raw_task, 0, 781 ng_btsocket_hci_raw_input, NULL); 782 783 /* Create list of sockets */ 784 LIST_INIT(&ng_btsocket_hci_raw_sockets); 785 mtx_init(&ng_btsocket_hci_raw_sockets_mtx, 786 "btsocks_hci_raw_sockets_mtx", NULL, MTX_DEF); 787 788 /* Tokens */ 789 ng_btsocket_hci_raw_token = 0; 790 mtx_init(&ng_btsocket_hci_raw_token_mtx, 791 "btsocks_hci_raw_token_mtx", NULL, MTX_DEF); 792 793 /* 794 * Security filter 795 * XXX never free()ed 796 */ 797 ng_btsocket_hci_raw_sec_filter = 798 malloc(sizeof(struct ng_btsocket_hci_raw_sec_filter), 799 M_NETGRAPH_BTSOCKET_HCI_RAW, M_NOWAIT|M_ZERO); 800 if (ng_btsocket_hci_raw_sec_filter == NULL) { 801 printf("%s: Could not allocate security filter!\n", __func__); 802 return; 803 } 804 805 /* 806 * XXX How paranoid can we get? 807 * 808 * Initialize security filter. If bit is set in the mask then 809 * unprivileged socket is allowed to send (receive) this command 810 * (event). 811 */ 812 813 /* Enable all events */ 814 memset(&ng_btsocket_hci_raw_sec_filter->events, 0xff, 815 sizeof(ng_btsocket_hci_raw_sec_filter->events)/ 816 sizeof(ng_btsocket_hci_raw_sec_filter->events[0])); 817 818 /* Disable some critical events */ 819 f = ng_btsocket_hci_raw_sec_filter->events; 820 bit_clear(f, NG_HCI_EVENT_RETURN_LINK_KEYS - 1); 821 bit_clear(f, NG_HCI_EVENT_LINK_KEY_NOTIFICATION - 1); 822 bit_clear(f, NG_HCI_EVENT_VENDOR - 1); 823 824 /* Commands - Link control */ 825 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_LINK_CONTROL-1]; 826 bit_set(f, NG_HCI_OCF_INQUIRY - 1); 827 bit_set(f, NG_HCI_OCF_INQUIRY_CANCEL - 1); 828 bit_set(f, NG_HCI_OCF_PERIODIC_INQUIRY - 1); 829 bit_set(f, NG_HCI_OCF_EXIT_PERIODIC_INQUIRY - 1); 830 bit_set(f, NG_HCI_OCF_REMOTE_NAME_REQ - 1); 831 bit_set(f, NG_HCI_OCF_READ_REMOTE_FEATURES - 1); 832 bit_set(f, NG_HCI_OCF_READ_REMOTE_VER_INFO - 1); 833 bit_set(f, NG_HCI_OCF_READ_CLOCK_OFFSET - 1); 834 835 /* Commands - Link policy */ 836 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_LINK_POLICY-1]; 837 bit_set(f, NG_HCI_OCF_ROLE_DISCOVERY - 1); 838 bit_set(f, NG_HCI_OCF_READ_LINK_POLICY_SETTINGS - 1); 839 840 /* Commands - Host controller and baseband */ 841 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_HC_BASEBAND-1]; 842 bit_set(f, NG_HCI_OCF_READ_PIN_TYPE - 1); 843 bit_set(f, NG_HCI_OCF_READ_LOCAL_NAME - 1); 844 bit_set(f, NG_HCI_OCF_READ_CON_ACCEPT_TIMO - 1); 845 bit_set(f, NG_HCI_OCF_READ_PAGE_TIMO - 1); 846 bit_set(f, NG_HCI_OCF_READ_SCAN_ENABLE - 1); 847 bit_set(f, NG_HCI_OCF_READ_PAGE_SCAN_ACTIVITY - 1); 848 bit_set(f, NG_HCI_OCF_READ_INQUIRY_SCAN_ACTIVITY - 1); 849 bit_set(f, NG_HCI_OCF_READ_AUTH_ENABLE - 1); 850 bit_set(f, NG_HCI_OCF_READ_ENCRYPTION_MODE - 1); 851 bit_set(f, NG_HCI_OCF_READ_UNIT_CLASS - 1); 852 bit_set(f, NG_HCI_OCF_READ_VOICE_SETTINGS - 1); 853 bit_set(f, NG_HCI_OCF_READ_AUTO_FLUSH_TIMO - 1); 854 bit_set(f, NG_HCI_OCF_READ_NUM_BROADCAST_RETRANS - 1); 855 bit_set(f, NG_HCI_OCF_READ_HOLD_MODE_ACTIVITY - 1); 856 bit_set(f, NG_HCI_OCF_READ_XMIT_LEVEL - 1); 857 bit_set(f, NG_HCI_OCF_READ_SCO_FLOW_CONTROL - 1); 858 bit_set(f, NG_HCI_OCF_READ_LINK_SUPERVISION_TIMO - 1); 859 bit_set(f, NG_HCI_OCF_READ_SUPPORTED_IAC_NUM - 1); 860 bit_set(f, NG_HCI_OCF_READ_IAC_LAP - 1); 861 bit_set(f, NG_HCI_OCF_READ_PAGE_SCAN_PERIOD - 1); 862 bit_set(f, NG_HCI_OCF_READ_PAGE_SCAN - 1); 863 bit_set(f, NG_HCI_OCF_READ_LE_HOST_SUPPORTED -1); 864 865 /* Commands - Informational */ 866 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_INFO - 1]; 867 bit_set(f, NG_HCI_OCF_READ_LOCAL_VER - 1); 868 bit_set(f, NG_HCI_OCF_READ_LOCAL_FEATURES - 1); 869 bit_set(f, NG_HCI_OCF_READ_BUFFER_SIZE - 1); 870 bit_set(f, NG_HCI_OCF_READ_COUNTRY_CODE - 1); 871 bit_set(f, NG_HCI_OCF_READ_BDADDR - 1); 872 873 /* Commands - Status */ 874 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_STATUS - 1]; 875 bit_set(f, NG_HCI_OCF_READ_FAILED_CONTACT_CNTR - 1); 876 bit_set(f, NG_HCI_OCF_GET_LINK_QUALITY - 1); 877 bit_set(f, NG_HCI_OCF_READ_RSSI - 1); 878 879 /* Commands - Testing */ 880 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_TESTING - 1]; 881 bit_set(f, NG_HCI_OCF_READ_LOOPBACK_MODE - 1); 882 /*Commands - LE*/ 883 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_LE -1]; 884 bit_set(f, NG_HCI_OCF_LE_SET_SCAN_ENABLE - 1); 885 bit_set(f, NG_HCI_OCF_LE_SET_SCAN_PARAMETERS - 1); 886 bit_set(f, NG_HCI_OCF_LE_READ_LOCAL_SUPPORTED_FEATURES - 1); 887 bit_set(f, NG_HCI_OCF_LE_READ_BUFFER_SIZE - 1); 888 bit_set(f, NG_HCI_OCF_LE_READ_WHITE_LIST_SIZE - 1); 889 890 } /* ng_btsocket_hci_raw_init */ 891 892 /* 893 * Abort connection on socket 894 */ 895 896 void 897 ng_btsocket_hci_raw_abort(struct socket *so) 898 { 899 } /* ng_btsocket_hci_raw_abort */ 900 901 void 902 ng_btsocket_hci_raw_close(struct socket *so) 903 { 904 } /* ng_btsocket_hci_raw_close */ 905 906 /* 907 * Create new raw HCI socket 908 */ 909 910 int 911 ng_btsocket_hci_raw_attach(struct socket *so, int proto, struct thread *td) 912 { 913 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 914 int error = 0; 915 916 if (pcb != NULL) 917 return (EISCONN); 918 919 if (ng_btsocket_hci_raw_node == NULL) 920 return (EPROTONOSUPPORT); 921 if (proto != BLUETOOTH_PROTO_HCI) 922 return (EPROTONOSUPPORT); 923 if (so->so_type != SOCK_RAW) 924 return (ESOCKTNOSUPPORT); 925 926 error = soreserve(so, NG_BTSOCKET_HCI_RAW_SENDSPACE, 927 NG_BTSOCKET_HCI_RAW_RECVSPACE); 928 if (error != 0) 929 return (error); 930 931 pcb = malloc(sizeof(*pcb), 932 M_NETGRAPH_BTSOCKET_HCI_RAW, M_NOWAIT|M_ZERO); 933 if (pcb == NULL) 934 return (ENOMEM); 935 936 so->so_pcb = (caddr_t) pcb; 937 pcb->so = so; 938 939 if (priv_check(td, PRIV_NETBLUETOOTH_RAW) == 0) 940 pcb->flags |= NG_BTSOCKET_HCI_RAW_PRIVILEGED; 941 942 /* 943 * Set default socket filter. By default socket only accepts HCI 944 * Command_Complete and Command_Status event packets. 945 */ 946 947 bit_set(pcb->filter.event_mask, NG_HCI_EVENT_COMMAND_COMPL - 1); 948 bit_set(pcb->filter.event_mask, NG_HCI_EVENT_COMMAND_STATUS - 1); 949 950 mtx_init(&pcb->pcb_mtx, "btsocks_hci_raw_pcb_mtx", NULL, MTX_DEF); 951 952 mtx_lock(&ng_btsocket_hci_raw_sockets_mtx); 953 LIST_INSERT_HEAD(&ng_btsocket_hci_raw_sockets, pcb, next); 954 mtx_unlock(&ng_btsocket_hci_raw_sockets_mtx); 955 956 return (0); 957 } /* ng_btsocket_hci_raw_attach */ 958 959 /* 960 * Bind raw HCI socket 961 */ 962 963 int 964 ng_btsocket_hci_raw_bind(struct socket *so, struct sockaddr *nam, 965 struct thread *td) 966 { 967 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 968 struct sockaddr_hci *sa = (struct sockaddr_hci *) nam; 969 970 if (pcb == NULL) 971 return (EINVAL); 972 if (ng_btsocket_hci_raw_node == NULL) 973 return (EINVAL); 974 975 if (sa == NULL) 976 return (EINVAL); 977 if (sa->hci_family != AF_BLUETOOTH) 978 return (EAFNOSUPPORT); 979 if (sa->hci_len != sizeof(*sa)) 980 return (EINVAL); 981 if (sa->hci_node[0] == 0) 982 return (EINVAL); 983 984 mtx_lock(&pcb->pcb_mtx); 985 bcopy(sa, &pcb->addr, sizeof(pcb->addr)); 986 mtx_unlock(&pcb->pcb_mtx); 987 988 return (0); 989 } /* ng_btsocket_hci_raw_bind */ 990 991 /* 992 * Connect raw HCI socket 993 */ 994 995 int 996 ng_btsocket_hci_raw_connect(struct socket *so, struct sockaddr *nam, 997 struct thread *td) 998 { 999 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1000 struct sockaddr_hci *sa = (struct sockaddr_hci *) nam; 1001 1002 if (pcb == NULL) 1003 return (EINVAL); 1004 if (ng_btsocket_hci_raw_node == NULL) 1005 return (EINVAL); 1006 1007 if (sa == NULL) 1008 return (EINVAL); 1009 if (sa->hci_family != AF_BLUETOOTH) 1010 return (EAFNOSUPPORT); 1011 if (sa->hci_len != sizeof(*sa)) 1012 return (EINVAL); 1013 if (sa->hci_node[0] == 0) 1014 return (EDESTADDRREQ); 1015 1016 mtx_lock(&pcb->pcb_mtx); 1017 1018 if (bcmp(sa, &pcb->addr, sizeof(pcb->addr)) != 0) { 1019 mtx_unlock(&pcb->pcb_mtx); 1020 return (EADDRNOTAVAIL); 1021 } 1022 1023 soisconnected(so); 1024 1025 mtx_unlock(&pcb->pcb_mtx); 1026 1027 return (0); 1028 } /* ng_btsocket_hci_raw_connect */ 1029 1030 /* 1031 * Process ioctl on socket 1032 */ 1033 1034 int 1035 ng_btsocket_hci_raw_control(struct socket *so, u_long cmd, caddr_t data, 1036 struct ifnet *ifp, struct thread *td) 1037 { 1038 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1039 char path[NG_NODESIZ + 1]; 1040 struct ng_mesg *msg = NULL; 1041 int error = 0; 1042 1043 if (pcb == NULL) 1044 return (EINVAL); 1045 if (ng_btsocket_hci_raw_node == NULL) 1046 return (EINVAL); 1047 1048 mtx_lock(&pcb->pcb_mtx); 1049 1050 /* Check if we have device name */ 1051 if (pcb->addr.hci_node[0] == 0) { 1052 mtx_unlock(&pcb->pcb_mtx); 1053 return (EHOSTUNREACH); 1054 } 1055 1056 /* Check if we have pending ioctl() */ 1057 if (pcb->token != 0) { 1058 mtx_unlock(&pcb->pcb_mtx); 1059 return (EBUSY); 1060 } 1061 1062 snprintf(path, sizeof(path), "%s:", pcb->addr.hci_node); 1063 1064 switch (cmd) { 1065 case SIOC_HCI_RAW_NODE_GET_STATE: { 1066 struct ng_btsocket_hci_raw_node_state *p = 1067 (struct ng_btsocket_hci_raw_node_state *) data; 1068 1069 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1070 NGM_HCI_NODE_GET_STATE, 1071 &p->state, sizeof(p->state)); 1072 } break; 1073 1074 case SIOC_HCI_RAW_NODE_INIT: 1075 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1076 error = ng_btsocket_hci_raw_send_ngmsg(path, 1077 NGM_HCI_NODE_INIT, NULL, 0); 1078 else 1079 error = EPERM; 1080 break; 1081 1082 case SIOC_HCI_RAW_NODE_GET_DEBUG: { 1083 struct ng_btsocket_hci_raw_node_debug *p = 1084 (struct ng_btsocket_hci_raw_node_debug *) data; 1085 1086 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1087 NGM_HCI_NODE_GET_DEBUG, 1088 &p->debug, sizeof(p->debug)); 1089 } break; 1090 1091 case SIOC_HCI_RAW_NODE_SET_DEBUG: { 1092 struct ng_btsocket_hci_raw_node_debug *p = 1093 (struct ng_btsocket_hci_raw_node_debug *) data; 1094 1095 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1096 error = ng_btsocket_hci_raw_send_ngmsg(path, 1097 NGM_HCI_NODE_SET_DEBUG, &p->debug, 1098 sizeof(p->debug)); 1099 else 1100 error = EPERM; 1101 } break; 1102 1103 case SIOC_HCI_RAW_NODE_GET_BUFFER: { 1104 struct ng_btsocket_hci_raw_node_buffer *p = 1105 (struct ng_btsocket_hci_raw_node_buffer *) data; 1106 1107 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1108 NGM_HCI_NODE_GET_BUFFER, 1109 &p->buffer, sizeof(p->buffer)); 1110 } break; 1111 1112 case SIOC_HCI_RAW_NODE_GET_BDADDR: { 1113 struct ng_btsocket_hci_raw_node_bdaddr *p = 1114 (struct ng_btsocket_hci_raw_node_bdaddr *) data; 1115 1116 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1117 NGM_HCI_NODE_GET_BDADDR, 1118 &p->bdaddr, sizeof(p->bdaddr)); 1119 } break; 1120 1121 case SIOC_HCI_RAW_NODE_GET_FEATURES: { 1122 struct ng_btsocket_hci_raw_node_features *p = 1123 (struct ng_btsocket_hci_raw_node_features *) data; 1124 1125 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1126 NGM_HCI_NODE_GET_FEATURES, 1127 &p->features, sizeof(p->features)); 1128 } break; 1129 1130 case SIOC_HCI_RAW_NODE_GET_STAT: { 1131 struct ng_btsocket_hci_raw_node_stat *p = 1132 (struct ng_btsocket_hci_raw_node_stat *) data; 1133 1134 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1135 NGM_HCI_NODE_GET_STAT, 1136 &p->stat, sizeof(p->stat)); 1137 } break; 1138 1139 case SIOC_HCI_RAW_NODE_RESET_STAT: 1140 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1141 error = ng_btsocket_hci_raw_send_ngmsg(path, 1142 NGM_HCI_NODE_RESET_STAT, NULL, 0); 1143 else 1144 error = EPERM; 1145 break; 1146 1147 case SIOC_HCI_RAW_NODE_FLUSH_NEIGHBOR_CACHE: 1148 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1149 error = ng_btsocket_hci_raw_send_ngmsg(path, 1150 NGM_HCI_NODE_FLUSH_NEIGHBOR_CACHE, 1151 NULL, 0); 1152 else 1153 error = EPERM; 1154 break; 1155 1156 case SIOC_HCI_RAW_NODE_GET_NEIGHBOR_CACHE: { 1157 struct ng_btsocket_hci_raw_node_neighbor_cache *p = 1158 (struct ng_btsocket_hci_raw_node_neighbor_cache *) data; 1159 ng_hci_node_get_neighbor_cache_ep *p1 = NULL; 1160 ng_hci_node_neighbor_cache_entry_ep *p2 = NULL; 1161 1162 if (p->num_entries <= 0 || 1163 p->num_entries > NG_HCI_MAX_NEIGHBOR_NUM || 1164 p->entries == NULL) { 1165 mtx_unlock(&pcb->pcb_mtx); 1166 return (EINVAL); 1167 } 1168 1169 NG_MKMESSAGE(msg, NGM_HCI_COOKIE, 1170 NGM_HCI_NODE_GET_NEIGHBOR_CACHE, 0, M_NOWAIT); 1171 if (msg == NULL) { 1172 mtx_unlock(&pcb->pcb_mtx); 1173 return (ENOMEM); 1174 } 1175 ng_btsocket_hci_raw_get_token(&msg->header.token); 1176 pcb->token = msg->header.token; 1177 pcb->msg = NULL; 1178 1179 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, path, 0); 1180 if (error != 0) { 1181 pcb->token = 0; 1182 mtx_unlock(&pcb->pcb_mtx); 1183 return (error); 1184 } 1185 1186 error = msleep(&pcb->msg, &pcb->pcb_mtx, 1187 PZERO|PCATCH, "hcictl", 1188 ng_btsocket_hci_raw_ioctl_timeout * hz); 1189 pcb->token = 0; 1190 1191 if (error != 0) { 1192 mtx_unlock(&pcb->pcb_mtx); 1193 return (error); 1194 } 1195 1196 msg = pcb->msg; 1197 pcb->msg = NULL; 1198 1199 mtx_unlock(&pcb->pcb_mtx); 1200 1201 if (msg != NULL && 1202 msg->header.cmd == NGM_HCI_NODE_GET_NEIGHBOR_CACHE) { 1203 /* Return data back to user space */ 1204 p1 = (ng_hci_node_get_neighbor_cache_ep *)(msg->data); 1205 p2 = (ng_hci_node_neighbor_cache_entry_ep *)(p1 + 1); 1206 1207 p->num_entries = min(p->num_entries, p1->num_entries); 1208 if (p->num_entries > 0) 1209 error = copyout((caddr_t) p2, 1210 (caddr_t) p->entries, 1211 p->num_entries * sizeof(*p2)); 1212 } else 1213 error = EINVAL; 1214 1215 NG_FREE_MSG(msg); /* checks for != NULL */ 1216 return (error); 1217 } /* NOTREACHED */ 1218 1219 case SIOC_HCI_RAW_NODE_GET_CON_LIST: { 1220 struct ng_btsocket_hci_raw_con_list *p = 1221 (struct ng_btsocket_hci_raw_con_list *) data; 1222 ng_hci_node_con_list_ep *p1 = NULL; 1223 ng_hci_node_con_ep *p2 = NULL; 1224 1225 if (p->num_connections == 0 || 1226 p->num_connections > NG_HCI_MAX_CON_NUM || 1227 p->connections == NULL) { 1228 mtx_unlock(&pcb->pcb_mtx); 1229 return (EINVAL); 1230 } 1231 1232 NG_MKMESSAGE(msg, NGM_HCI_COOKIE, NGM_HCI_NODE_GET_CON_LIST, 1233 0, M_NOWAIT); 1234 if (msg == NULL) { 1235 mtx_unlock(&pcb->pcb_mtx); 1236 return (ENOMEM); 1237 } 1238 ng_btsocket_hci_raw_get_token(&msg->header.token); 1239 pcb->token = msg->header.token; 1240 pcb->msg = NULL; 1241 1242 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, path, 0); 1243 if (error != 0) { 1244 pcb->token = 0; 1245 mtx_unlock(&pcb->pcb_mtx); 1246 return (error); 1247 } 1248 1249 error = msleep(&pcb->msg, &pcb->pcb_mtx, 1250 PZERO|PCATCH, "hcictl", 1251 ng_btsocket_hci_raw_ioctl_timeout * hz); 1252 pcb->token = 0; 1253 1254 if (error != 0) { 1255 mtx_unlock(&pcb->pcb_mtx); 1256 return (error); 1257 } 1258 1259 msg = pcb->msg; 1260 pcb->msg = NULL; 1261 1262 mtx_unlock(&pcb->pcb_mtx); 1263 1264 if (msg != NULL && 1265 msg->header.cmd == NGM_HCI_NODE_GET_CON_LIST) { 1266 /* Return data back to user space */ 1267 p1 = (ng_hci_node_con_list_ep *)(msg->data); 1268 p2 = (ng_hci_node_con_ep *)(p1 + 1); 1269 1270 p->num_connections = min(p->num_connections, 1271 p1->num_connections); 1272 if (p->num_connections > 0) 1273 error = copyout((caddr_t) p2, 1274 (caddr_t) p->connections, 1275 p->num_connections * sizeof(*p2)); 1276 } else 1277 error = EINVAL; 1278 1279 NG_FREE_MSG(msg); /* checks for != NULL */ 1280 return (error); 1281 } /* NOTREACHED */ 1282 1283 case SIOC_HCI_RAW_NODE_GET_LINK_POLICY_MASK: { 1284 struct ng_btsocket_hci_raw_node_link_policy_mask *p = 1285 (struct ng_btsocket_hci_raw_node_link_policy_mask *) 1286 data; 1287 1288 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1289 NGM_HCI_NODE_GET_LINK_POLICY_SETTINGS_MASK, 1290 &p->policy_mask, sizeof(p->policy_mask)); 1291 } break; 1292 1293 case SIOC_HCI_RAW_NODE_SET_LINK_POLICY_MASK: { 1294 struct ng_btsocket_hci_raw_node_link_policy_mask *p = 1295 (struct ng_btsocket_hci_raw_node_link_policy_mask *) 1296 data; 1297 1298 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1299 error = ng_btsocket_hci_raw_send_ngmsg(path, 1300 NGM_HCI_NODE_SET_LINK_POLICY_SETTINGS_MASK, 1301 &p->policy_mask, 1302 sizeof(p->policy_mask)); 1303 else 1304 error = EPERM; 1305 } break; 1306 1307 case SIOC_HCI_RAW_NODE_GET_PACKET_MASK: { 1308 struct ng_btsocket_hci_raw_node_packet_mask *p = 1309 (struct ng_btsocket_hci_raw_node_packet_mask *) data; 1310 1311 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1312 NGM_HCI_NODE_GET_PACKET_MASK, 1313 &p->packet_mask, sizeof(p->packet_mask)); 1314 } break; 1315 1316 case SIOC_HCI_RAW_NODE_SET_PACKET_MASK: { 1317 struct ng_btsocket_hci_raw_node_packet_mask *p = 1318 (struct ng_btsocket_hci_raw_node_packet_mask *) data; 1319 1320 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1321 error = ng_btsocket_hci_raw_send_ngmsg(path, 1322 NGM_HCI_NODE_SET_PACKET_MASK, 1323 &p->packet_mask, 1324 sizeof(p->packet_mask)); 1325 else 1326 error = EPERM; 1327 } break; 1328 1329 case SIOC_HCI_RAW_NODE_GET_ROLE_SWITCH: { 1330 struct ng_btsocket_hci_raw_node_role_switch *p = 1331 (struct ng_btsocket_hci_raw_node_role_switch *) data; 1332 1333 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1334 NGM_HCI_NODE_GET_ROLE_SWITCH, 1335 &p->role_switch, sizeof(p->role_switch)); 1336 } break; 1337 1338 case SIOC_HCI_RAW_NODE_SET_ROLE_SWITCH: { 1339 struct ng_btsocket_hci_raw_node_role_switch *p = 1340 (struct ng_btsocket_hci_raw_node_role_switch *) data; 1341 1342 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1343 error = ng_btsocket_hci_raw_send_ngmsg(path, 1344 NGM_HCI_NODE_SET_ROLE_SWITCH, 1345 &p->role_switch, 1346 sizeof(p->role_switch)); 1347 else 1348 error = EPERM; 1349 } break; 1350 1351 case SIOC_HCI_RAW_NODE_LIST_NAMES: { 1352 struct ng_btsocket_hci_raw_node_list_names *nl = 1353 (struct ng_btsocket_hci_raw_node_list_names *) data; 1354 struct nodeinfo *ni = nl->names; 1355 1356 if (nl->num_names == 0) { 1357 mtx_unlock(&pcb->pcb_mtx); 1358 return (EINVAL); 1359 } 1360 1361 NG_MKMESSAGE(msg, NGM_GENERIC_COOKIE, NGM_LISTNAMES, 1362 0, M_NOWAIT); 1363 if (msg == NULL) { 1364 mtx_unlock(&pcb->pcb_mtx); 1365 return (ENOMEM); 1366 } 1367 ng_btsocket_hci_raw_get_token(&msg->header.token); 1368 pcb->token = msg->header.token; 1369 pcb->msg = NULL; 1370 1371 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, ".:", 0); 1372 if (error != 0) { 1373 pcb->token = 0; 1374 mtx_unlock(&pcb->pcb_mtx); 1375 return (error); 1376 } 1377 1378 error = msleep(&pcb->msg, &pcb->pcb_mtx, 1379 PZERO|PCATCH, "hcictl", 1380 ng_btsocket_hci_raw_ioctl_timeout * hz); 1381 pcb->token = 0; 1382 1383 if (error != 0) { 1384 mtx_unlock(&pcb->pcb_mtx); 1385 return (error); 1386 } 1387 1388 msg = pcb->msg; 1389 pcb->msg = NULL; 1390 1391 mtx_unlock(&pcb->pcb_mtx); 1392 1393 if (msg != NULL && msg->header.cmd == NGM_LISTNAMES) { 1394 /* Return data back to user space */ 1395 struct namelist *nl1 = (struct namelist *) msg->data; 1396 struct nodeinfo *ni1 = &nl1->nodeinfo[0]; 1397 1398 while (nl->num_names > 0 && nl1->numnames > 0) { 1399 if (strcmp(ni1->type, NG_HCI_NODE_TYPE) == 0) { 1400 error = copyout((caddr_t) ni1, 1401 (caddr_t) ni, 1402 sizeof(*ni)); 1403 if (error != 0) 1404 break; 1405 1406 nl->num_names --; 1407 ni ++; 1408 } 1409 1410 nl1->numnames --; 1411 ni1 ++; 1412 } 1413 1414 nl->num_names = ni - nl->names; 1415 } else 1416 error = EINVAL; 1417 1418 NG_FREE_MSG(msg); /* checks for != NULL */ 1419 return (error); 1420 } /* NOTREACHED */ 1421 1422 default: 1423 error = EINVAL; 1424 break; 1425 } 1426 1427 mtx_unlock(&pcb->pcb_mtx); 1428 1429 return (error); 1430 } /* ng_btsocket_hci_raw_control */ 1431 1432 /* 1433 * Process getsockopt/setsockopt system calls 1434 */ 1435 1436 int 1437 ng_btsocket_hci_raw_ctloutput(struct socket *so, struct sockopt *sopt) 1438 { 1439 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1440 struct ng_btsocket_hci_raw_filter filter; 1441 int error = 0, dir; 1442 1443 if (pcb == NULL) 1444 return (EINVAL); 1445 if (ng_btsocket_hci_raw_node == NULL) 1446 return (EINVAL); 1447 1448 if (sopt->sopt_level != SOL_HCI_RAW) 1449 return (0); 1450 1451 mtx_lock(&pcb->pcb_mtx); 1452 1453 switch (sopt->sopt_dir) { 1454 case SOPT_GET: 1455 switch (sopt->sopt_name) { 1456 case SO_HCI_RAW_FILTER: 1457 error = sooptcopyout(sopt, &pcb->filter, 1458 sizeof(pcb->filter)); 1459 break; 1460 1461 case SO_HCI_RAW_DIRECTION: 1462 dir = (pcb->flags & NG_BTSOCKET_HCI_RAW_DIRECTION)?1:0; 1463 error = sooptcopyout(sopt, &dir, sizeof(dir)); 1464 break; 1465 1466 default: 1467 error = EINVAL; 1468 break; 1469 } 1470 break; 1471 1472 case SOPT_SET: 1473 switch (sopt->sopt_name) { 1474 case SO_HCI_RAW_FILTER: 1475 error = sooptcopyin(sopt, &filter, sizeof(filter), 1476 sizeof(filter)); 1477 if (error == 0) 1478 bcopy(&filter, &pcb->filter, 1479 sizeof(pcb->filter)); 1480 break; 1481 1482 case SO_HCI_RAW_DIRECTION: 1483 error = sooptcopyin(sopt, &dir, sizeof(dir), 1484 sizeof(dir)); 1485 if (error != 0) 1486 break; 1487 1488 if (dir) 1489 pcb->flags |= NG_BTSOCKET_HCI_RAW_DIRECTION; 1490 else 1491 pcb->flags &= ~NG_BTSOCKET_HCI_RAW_DIRECTION; 1492 break; 1493 1494 default: 1495 error = EINVAL; 1496 break; 1497 } 1498 break; 1499 1500 default: 1501 error = EINVAL; 1502 break; 1503 } 1504 1505 mtx_unlock(&pcb->pcb_mtx); 1506 1507 return (error); 1508 } /* ng_btsocket_hci_raw_ctloutput */ 1509 1510 /* 1511 * Detach raw HCI socket 1512 */ 1513 1514 void 1515 ng_btsocket_hci_raw_detach(struct socket *so) 1516 { 1517 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1518 1519 KASSERT(pcb != NULL, ("ng_btsocket_hci_raw_detach: pcb == NULL")); 1520 1521 if (ng_btsocket_hci_raw_node == NULL) 1522 return; 1523 1524 mtx_lock(&ng_btsocket_hci_raw_sockets_mtx); 1525 mtx_lock(&pcb->pcb_mtx); 1526 1527 LIST_REMOVE(pcb, next); 1528 1529 mtx_unlock(&pcb->pcb_mtx); 1530 mtx_unlock(&ng_btsocket_hci_raw_sockets_mtx); 1531 1532 mtx_destroy(&pcb->pcb_mtx); 1533 1534 bzero(pcb, sizeof(*pcb)); 1535 free(pcb, M_NETGRAPH_BTSOCKET_HCI_RAW); 1536 1537 so->so_pcb = NULL; 1538 } /* ng_btsocket_hci_raw_detach */ 1539 1540 /* 1541 * Disconnect raw HCI socket 1542 */ 1543 1544 int 1545 ng_btsocket_hci_raw_disconnect(struct socket *so) 1546 { 1547 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1548 1549 if (pcb == NULL) 1550 return (EINVAL); 1551 if (ng_btsocket_hci_raw_node == NULL) 1552 return (EINVAL); 1553 1554 mtx_lock(&pcb->pcb_mtx); 1555 soisdisconnected(so); 1556 mtx_unlock(&pcb->pcb_mtx); 1557 1558 return (0); 1559 } /* ng_btsocket_hci_raw_disconnect */ 1560 1561 /* 1562 * Get socket peer's address 1563 */ 1564 1565 int 1566 ng_btsocket_hci_raw_peeraddr(struct socket *so, struct sockaddr **nam) 1567 { 1568 return (ng_btsocket_hci_raw_sockaddr(so, nam)); 1569 } /* ng_btsocket_hci_raw_peeraddr */ 1570 1571 /* 1572 * Send data 1573 */ 1574 1575 int 1576 ng_btsocket_hci_raw_send(struct socket *so, int flags, struct mbuf *m, 1577 struct sockaddr *sa, struct mbuf *control, struct thread *td) 1578 { 1579 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1580 struct mbuf *nam = NULL; 1581 int error = 0; 1582 1583 if (ng_btsocket_hci_raw_node == NULL) { 1584 error = ENETDOWN; 1585 goto drop; 1586 } 1587 if (pcb == NULL) { 1588 error = EINVAL; 1589 goto drop; 1590 } 1591 if (control != NULL) { 1592 error = EINVAL; 1593 goto drop; 1594 } 1595 1596 if (m->m_pkthdr.len < sizeof(ng_hci_cmd_pkt_t) || 1597 m->m_pkthdr.len > sizeof(ng_hci_cmd_pkt_t) + NG_HCI_CMD_PKT_SIZE) { 1598 error = EMSGSIZE; 1599 goto drop; 1600 } 1601 1602 if (m->m_len < sizeof(ng_hci_cmd_pkt_t)) { 1603 if ((m = m_pullup(m, sizeof(ng_hci_cmd_pkt_t))) == NULL) { 1604 error = ENOBUFS; 1605 goto drop; 1606 } 1607 } 1608 if (*mtod(m, u_int8_t *) != NG_HCI_CMD_PKT) { 1609 error = ENOTSUP; 1610 goto drop; 1611 } 1612 1613 mtx_lock(&pcb->pcb_mtx); 1614 1615 error = ng_btsocket_hci_raw_filter(pcb, m, 0); 1616 if (error != 0) { 1617 mtx_unlock(&pcb->pcb_mtx); 1618 goto drop; 1619 } 1620 1621 if (sa == NULL) { 1622 if (pcb->addr.hci_node[0] == 0) { 1623 mtx_unlock(&pcb->pcb_mtx); 1624 error = EDESTADDRREQ; 1625 goto drop; 1626 } 1627 1628 sa = (struct sockaddr *) &pcb->addr; 1629 } 1630 1631 MGET(nam, M_NOWAIT, MT_SONAME); 1632 if (nam == NULL) { 1633 mtx_unlock(&pcb->pcb_mtx); 1634 error = ENOBUFS; 1635 goto drop; 1636 } 1637 1638 nam->m_len = sizeof(struct sockaddr_hci); 1639 bcopy(sa,mtod(nam, struct sockaddr_hci *),sizeof(struct sockaddr_hci)); 1640 1641 nam->m_next = m; 1642 m = NULL; 1643 1644 mtx_unlock(&pcb->pcb_mtx); 1645 1646 return (ng_send_fn(ng_btsocket_hci_raw_node, NULL, 1647 ng_btsocket_hci_raw_output, nam, 0)); 1648 drop: 1649 NG_FREE_M(control); /* NG_FREE_M checks for != NULL */ 1650 NG_FREE_M(nam); 1651 NG_FREE_M(m); 1652 1653 return (error); 1654 } /* ng_btsocket_hci_raw_send */ 1655 1656 /* 1657 * Get socket address 1658 */ 1659 1660 int 1661 ng_btsocket_hci_raw_sockaddr(struct socket *so, struct sockaddr **nam) 1662 { 1663 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1664 struct sockaddr_hci sa; 1665 1666 if (pcb == NULL) 1667 return (EINVAL); 1668 if (ng_btsocket_hci_raw_node == NULL) 1669 return (EINVAL); 1670 1671 bzero(&sa, sizeof(sa)); 1672 sa.hci_len = sizeof(sa); 1673 sa.hci_family = AF_BLUETOOTH; 1674 1675 mtx_lock(&pcb->pcb_mtx); 1676 strlcpy(sa.hci_node, pcb->addr.hci_node, sizeof(sa.hci_node)); 1677 mtx_unlock(&pcb->pcb_mtx); 1678 1679 *nam = sodupsockaddr((struct sockaddr *) &sa, M_NOWAIT); 1680 1681 return ((*nam == NULL)? ENOMEM : 0); 1682 } /* ng_btsocket_hci_raw_sockaddr */ 1683