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(&dir, sizeof(dir), 464 SCM_HCI_RAW_DIRECTION, SOL_HCI_RAW, M_NOWAIT); 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(&tv, sizeof(tv), SCM_TIMESTAMP, 472 SOL_SOCKET, M_NOWAIT); 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 soroverflow(pcb->so); 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 static void 732 ng_btsocket_hci_raw_init(void *arg __unused) 733 { 734 bitstr_t *f = NULL; 735 int error = 0; 736 737 ng_btsocket_hci_raw_node = NULL; 738 ng_btsocket_hci_raw_debug_level = NG_BTSOCKET_WARN_LEVEL; 739 ng_btsocket_hci_raw_ioctl_timeout = 5; 740 741 /* Register Netgraph node type */ 742 error = ng_newtype(&typestruct); 743 if (error != 0) { 744 NG_BTSOCKET_HCI_RAW_ALERT( 745 "%s: Could not register Netgraph node type, error=%d\n", __func__, error); 746 747 return; 748 } 749 750 /* Create Netgrapg node */ 751 error = ng_make_node_common(&typestruct, &ng_btsocket_hci_raw_node); 752 if (error != 0) { 753 NG_BTSOCKET_HCI_RAW_ALERT( 754 "%s: Could not create Netgraph node, error=%d\n", __func__, error); 755 756 ng_btsocket_hci_raw_node = NULL; 757 758 return; 759 } 760 761 error = ng_name_node(ng_btsocket_hci_raw_node, 762 NG_BTSOCKET_HCI_RAW_NODE_TYPE); 763 if (error != 0) { 764 NG_BTSOCKET_HCI_RAW_ALERT( 765 "%s: Could not name Netgraph node, error=%d\n", __func__, error); 766 767 NG_NODE_UNREF(ng_btsocket_hci_raw_node); 768 ng_btsocket_hci_raw_node = NULL; 769 770 return; 771 } 772 773 /* Create input queue */ 774 NG_BT_ITEMQ_INIT(&ng_btsocket_hci_raw_queue, 300); 775 mtx_init(&ng_btsocket_hci_raw_queue_mtx, 776 "btsocks_hci_raw_queue_mtx", NULL, MTX_DEF); 777 TASK_INIT(&ng_btsocket_hci_raw_task, 0, 778 ng_btsocket_hci_raw_input, NULL); 779 780 /* Create list of sockets */ 781 LIST_INIT(&ng_btsocket_hci_raw_sockets); 782 mtx_init(&ng_btsocket_hci_raw_sockets_mtx, 783 "btsocks_hci_raw_sockets_mtx", NULL, MTX_DEF); 784 785 /* Tokens */ 786 ng_btsocket_hci_raw_token = 0; 787 mtx_init(&ng_btsocket_hci_raw_token_mtx, 788 "btsocks_hci_raw_token_mtx", NULL, MTX_DEF); 789 790 /* 791 * Security filter 792 * XXX never free()ed 793 */ 794 ng_btsocket_hci_raw_sec_filter = 795 malloc(sizeof(struct ng_btsocket_hci_raw_sec_filter), 796 M_NETGRAPH_BTSOCKET_HCI_RAW, M_NOWAIT|M_ZERO); 797 if (ng_btsocket_hci_raw_sec_filter == NULL) { 798 printf("%s: Could not allocate security filter!\n", __func__); 799 return; 800 } 801 802 /* 803 * XXX How paranoid can we get? 804 * 805 * Initialize security filter. If bit is set in the mask then 806 * unprivileged socket is allowed to send (receive) this command 807 * (event). 808 */ 809 810 /* Enable all events */ 811 memset(&ng_btsocket_hci_raw_sec_filter->events, 0xff, 812 sizeof(ng_btsocket_hci_raw_sec_filter->events)/ 813 sizeof(ng_btsocket_hci_raw_sec_filter->events[0])); 814 815 /* Disable some critical events */ 816 f = ng_btsocket_hci_raw_sec_filter->events; 817 bit_clear(f, NG_HCI_EVENT_RETURN_LINK_KEYS - 1); 818 bit_clear(f, NG_HCI_EVENT_LINK_KEY_NOTIFICATION - 1); 819 bit_clear(f, NG_HCI_EVENT_VENDOR - 1); 820 821 /* Commands - Link control */ 822 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_LINK_CONTROL-1]; 823 bit_set(f, NG_HCI_OCF_INQUIRY - 1); 824 bit_set(f, NG_HCI_OCF_INQUIRY_CANCEL - 1); 825 bit_set(f, NG_HCI_OCF_PERIODIC_INQUIRY - 1); 826 bit_set(f, NG_HCI_OCF_EXIT_PERIODIC_INQUIRY - 1); 827 bit_set(f, NG_HCI_OCF_REMOTE_NAME_REQ - 1); 828 bit_set(f, NG_HCI_OCF_READ_REMOTE_FEATURES - 1); 829 bit_set(f, NG_HCI_OCF_READ_REMOTE_VER_INFO - 1); 830 bit_set(f, NG_HCI_OCF_READ_CLOCK_OFFSET - 1); 831 832 /* Commands - Link policy */ 833 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_LINK_POLICY-1]; 834 bit_set(f, NG_HCI_OCF_ROLE_DISCOVERY - 1); 835 bit_set(f, NG_HCI_OCF_READ_LINK_POLICY_SETTINGS - 1); 836 837 /* Commands - Host controller and baseband */ 838 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_HC_BASEBAND-1]; 839 bit_set(f, NG_HCI_OCF_READ_PIN_TYPE - 1); 840 bit_set(f, NG_HCI_OCF_READ_LOCAL_NAME - 1); 841 bit_set(f, NG_HCI_OCF_READ_CON_ACCEPT_TIMO - 1); 842 bit_set(f, NG_HCI_OCF_READ_PAGE_TIMO - 1); 843 bit_set(f, NG_HCI_OCF_READ_SCAN_ENABLE - 1); 844 bit_set(f, NG_HCI_OCF_READ_PAGE_SCAN_ACTIVITY - 1); 845 bit_set(f, NG_HCI_OCF_READ_INQUIRY_SCAN_ACTIVITY - 1); 846 bit_set(f, NG_HCI_OCF_READ_AUTH_ENABLE - 1); 847 bit_set(f, NG_HCI_OCF_READ_ENCRYPTION_MODE - 1); 848 bit_set(f, NG_HCI_OCF_READ_UNIT_CLASS - 1); 849 bit_set(f, NG_HCI_OCF_READ_VOICE_SETTINGS - 1); 850 bit_set(f, NG_HCI_OCF_READ_AUTO_FLUSH_TIMO - 1); 851 bit_set(f, NG_HCI_OCF_READ_NUM_BROADCAST_RETRANS - 1); 852 bit_set(f, NG_HCI_OCF_READ_HOLD_MODE_ACTIVITY - 1); 853 bit_set(f, NG_HCI_OCF_READ_XMIT_LEVEL - 1); 854 bit_set(f, NG_HCI_OCF_READ_SCO_FLOW_CONTROL - 1); 855 bit_set(f, NG_HCI_OCF_READ_LINK_SUPERVISION_TIMO - 1); 856 bit_set(f, NG_HCI_OCF_READ_SUPPORTED_IAC_NUM - 1); 857 bit_set(f, NG_HCI_OCF_READ_IAC_LAP - 1); 858 bit_set(f, NG_HCI_OCF_READ_PAGE_SCAN_PERIOD - 1); 859 bit_set(f, NG_HCI_OCF_READ_PAGE_SCAN - 1); 860 bit_set(f, NG_HCI_OCF_READ_LE_HOST_SUPPORTED -1); 861 862 /* Commands - Informational */ 863 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_INFO - 1]; 864 bit_set(f, NG_HCI_OCF_READ_LOCAL_VER - 1); 865 bit_set(f, NG_HCI_OCF_READ_LOCAL_FEATURES - 1); 866 bit_set(f, NG_HCI_OCF_READ_BUFFER_SIZE - 1); 867 bit_set(f, NG_HCI_OCF_READ_COUNTRY_CODE - 1); 868 bit_set(f, NG_HCI_OCF_READ_BDADDR - 1); 869 870 /* Commands - Status */ 871 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_STATUS - 1]; 872 bit_set(f, NG_HCI_OCF_READ_FAILED_CONTACT_CNTR - 1); 873 bit_set(f, NG_HCI_OCF_GET_LINK_QUALITY - 1); 874 bit_set(f, NG_HCI_OCF_READ_RSSI - 1); 875 876 /* Commands - Testing */ 877 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_TESTING - 1]; 878 bit_set(f, NG_HCI_OCF_READ_LOOPBACK_MODE - 1); 879 /*Commands - LE*/ 880 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_LE -1]; 881 bit_set(f, NG_HCI_OCF_LE_SET_SCAN_ENABLE - 1); 882 bit_set(f, NG_HCI_OCF_LE_SET_SCAN_PARAMETERS - 1); 883 bit_set(f, NG_HCI_OCF_LE_READ_LOCAL_SUPPORTED_FEATURES - 1); 884 bit_set(f, NG_HCI_OCF_LE_READ_BUFFER_SIZE - 1); 885 bit_set(f, NG_HCI_OCF_LE_READ_WHITE_LIST_SIZE - 1); 886 887 } /* ng_btsocket_hci_raw_init */ 888 SYSINIT(ng_btsocket_hci_raw_init, SI_SUB_PROTO_DOMAIN, SI_ORDER_THIRD, 889 ng_btsocket_hci_raw_init, NULL); 890 891 /* 892 * Abort connection on socket 893 */ 894 895 void 896 ng_btsocket_hci_raw_abort(struct socket *so) 897 { 898 } /* ng_btsocket_hci_raw_abort */ 899 900 void 901 ng_btsocket_hci_raw_close(struct socket *so) 902 { 903 } /* ng_btsocket_hci_raw_close */ 904 905 /* 906 * Create new raw HCI socket 907 */ 908 909 int 910 ng_btsocket_hci_raw_attach(struct socket *so, int proto, struct thread *td) 911 { 912 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 913 int error = 0; 914 915 if (pcb != NULL) 916 return (EISCONN); 917 918 if (ng_btsocket_hci_raw_node == NULL) 919 return (EPROTONOSUPPORT); 920 if (proto != BLUETOOTH_PROTO_HCI) 921 return (EPROTONOSUPPORT); 922 if (so->so_type != SOCK_RAW) 923 return (ESOCKTNOSUPPORT); 924 925 error = soreserve(so, NG_BTSOCKET_HCI_RAW_SENDSPACE, 926 NG_BTSOCKET_HCI_RAW_RECVSPACE); 927 if (error != 0) 928 return (error); 929 930 pcb = malloc(sizeof(*pcb), 931 M_NETGRAPH_BTSOCKET_HCI_RAW, M_NOWAIT|M_ZERO); 932 if (pcb == NULL) 933 return (ENOMEM); 934 935 so->so_pcb = (caddr_t) pcb; 936 pcb->so = so; 937 938 if (priv_check(td, PRIV_NETBLUETOOTH_RAW) == 0) 939 pcb->flags |= NG_BTSOCKET_HCI_RAW_PRIVILEGED; 940 941 /* 942 * Set default socket filter. By default socket only accepts HCI 943 * Command_Complete and Command_Status event packets. 944 */ 945 946 bit_set(pcb->filter.event_mask, NG_HCI_EVENT_COMMAND_COMPL - 1); 947 bit_set(pcb->filter.event_mask, NG_HCI_EVENT_COMMAND_STATUS - 1); 948 949 mtx_init(&pcb->pcb_mtx, "btsocks_hci_raw_pcb_mtx", NULL, MTX_DEF); 950 951 mtx_lock(&ng_btsocket_hci_raw_sockets_mtx); 952 LIST_INSERT_HEAD(&ng_btsocket_hci_raw_sockets, pcb, next); 953 mtx_unlock(&ng_btsocket_hci_raw_sockets_mtx); 954 955 return (0); 956 } /* ng_btsocket_hci_raw_attach */ 957 958 /* 959 * Bind raw HCI socket 960 */ 961 962 int 963 ng_btsocket_hci_raw_bind(struct socket *so, struct sockaddr *nam, 964 struct thread *td) 965 { 966 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 967 struct sockaddr_hci *sa = (struct sockaddr_hci *) nam; 968 969 if (pcb == NULL) 970 return (EINVAL); 971 if (ng_btsocket_hci_raw_node == NULL) 972 return (EINVAL); 973 974 if (sa == NULL) 975 return (EINVAL); 976 if (sa->hci_family != AF_BLUETOOTH) 977 return (EAFNOSUPPORT); 978 if (sa->hci_len != sizeof(*sa)) 979 return (EINVAL); 980 if (sa->hci_node[0] == 0) 981 return (EINVAL); 982 983 mtx_lock(&pcb->pcb_mtx); 984 bcopy(sa, &pcb->addr, sizeof(pcb->addr)); 985 mtx_unlock(&pcb->pcb_mtx); 986 987 return (0); 988 } /* ng_btsocket_hci_raw_bind */ 989 990 /* 991 * Connect raw HCI socket 992 */ 993 994 int 995 ng_btsocket_hci_raw_connect(struct socket *so, struct sockaddr *nam, 996 struct thread *td) 997 { 998 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 999 struct sockaddr_hci *sa = (struct sockaddr_hci *) nam; 1000 1001 if (pcb == NULL) 1002 return (EINVAL); 1003 if (ng_btsocket_hci_raw_node == NULL) 1004 return (EINVAL); 1005 1006 if (sa == NULL) 1007 return (EINVAL); 1008 if (sa->hci_family != AF_BLUETOOTH) 1009 return (EAFNOSUPPORT); 1010 if (sa->hci_len != sizeof(*sa)) 1011 return (EINVAL); 1012 if (sa->hci_node[0] == 0) 1013 return (EDESTADDRREQ); 1014 1015 mtx_lock(&pcb->pcb_mtx); 1016 1017 if (bcmp(sa, &pcb->addr, sizeof(pcb->addr)) != 0) { 1018 mtx_unlock(&pcb->pcb_mtx); 1019 return (EADDRNOTAVAIL); 1020 } 1021 1022 soisconnected(so); 1023 1024 mtx_unlock(&pcb->pcb_mtx); 1025 1026 return (0); 1027 } /* ng_btsocket_hci_raw_connect */ 1028 1029 /* 1030 * Process ioctl on socket 1031 */ 1032 1033 int 1034 ng_btsocket_hci_raw_control(struct socket *so, u_long cmd, void *data, 1035 struct ifnet *ifp, struct thread *td) 1036 { 1037 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1038 char path[NG_NODESIZ + 1]; 1039 struct ng_mesg *msg = NULL; 1040 int error = 0; 1041 1042 if (pcb == NULL) 1043 return (EINVAL); 1044 if (ng_btsocket_hci_raw_node == NULL) 1045 return (EINVAL); 1046 1047 mtx_lock(&pcb->pcb_mtx); 1048 1049 /* Check if we have device name */ 1050 if (pcb->addr.hci_node[0] == 0) { 1051 mtx_unlock(&pcb->pcb_mtx); 1052 return (EHOSTUNREACH); 1053 } 1054 1055 /* Check if we have pending ioctl() */ 1056 if (pcb->token != 0) { 1057 mtx_unlock(&pcb->pcb_mtx); 1058 return (EBUSY); 1059 } 1060 1061 snprintf(path, sizeof(path), "%s:", pcb->addr.hci_node); 1062 1063 switch (cmd) { 1064 case SIOC_HCI_RAW_NODE_GET_STATE: { 1065 struct ng_btsocket_hci_raw_node_state *p = 1066 (struct ng_btsocket_hci_raw_node_state *) data; 1067 1068 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1069 NGM_HCI_NODE_GET_STATE, 1070 &p->state, sizeof(p->state)); 1071 } break; 1072 1073 case SIOC_HCI_RAW_NODE_INIT: 1074 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1075 error = ng_btsocket_hci_raw_send_ngmsg(path, 1076 NGM_HCI_NODE_INIT, NULL, 0); 1077 else 1078 error = EPERM; 1079 break; 1080 1081 case SIOC_HCI_RAW_NODE_GET_DEBUG: { 1082 struct ng_btsocket_hci_raw_node_debug *p = 1083 (struct ng_btsocket_hci_raw_node_debug *) data; 1084 1085 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1086 NGM_HCI_NODE_GET_DEBUG, 1087 &p->debug, sizeof(p->debug)); 1088 } break; 1089 1090 case SIOC_HCI_RAW_NODE_SET_DEBUG: { 1091 struct ng_btsocket_hci_raw_node_debug *p = 1092 (struct ng_btsocket_hci_raw_node_debug *) data; 1093 1094 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1095 error = ng_btsocket_hci_raw_send_ngmsg(path, 1096 NGM_HCI_NODE_SET_DEBUG, &p->debug, 1097 sizeof(p->debug)); 1098 else 1099 error = EPERM; 1100 } break; 1101 1102 case SIOC_HCI_RAW_NODE_GET_BUFFER: { 1103 struct ng_btsocket_hci_raw_node_buffer *p = 1104 (struct ng_btsocket_hci_raw_node_buffer *) data; 1105 1106 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1107 NGM_HCI_NODE_GET_BUFFER, 1108 &p->buffer, sizeof(p->buffer)); 1109 } break; 1110 1111 case SIOC_HCI_RAW_NODE_GET_BDADDR: { 1112 struct ng_btsocket_hci_raw_node_bdaddr *p = 1113 (struct ng_btsocket_hci_raw_node_bdaddr *) data; 1114 1115 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1116 NGM_HCI_NODE_GET_BDADDR, 1117 &p->bdaddr, sizeof(p->bdaddr)); 1118 } break; 1119 1120 case SIOC_HCI_RAW_NODE_GET_FEATURES: { 1121 struct ng_btsocket_hci_raw_node_features *p = 1122 (struct ng_btsocket_hci_raw_node_features *) data; 1123 1124 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1125 NGM_HCI_NODE_GET_FEATURES, 1126 &p->features, sizeof(p->features)); 1127 } break; 1128 1129 case SIOC_HCI_RAW_NODE_GET_STAT: { 1130 struct ng_btsocket_hci_raw_node_stat *p = 1131 (struct ng_btsocket_hci_raw_node_stat *) data; 1132 1133 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1134 NGM_HCI_NODE_GET_STAT, 1135 &p->stat, sizeof(p->stat)); 1136 } break; 1137 1138 case SIOC_HCI_RAW_NODE_RESET_STAT: 1139 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1140 error = ng_btsocket_hci_raw_send_ngmsg(path, 1141 NGM_HCI_NODE_RESET_STAT, NULL, 0); 1142 else 1143 error = EPERM; 1144 break; 1145 1146 case SIOC_HCI_RAW_NODE_FLUSH_NEIGHBOR_CACHE: 1147 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1148 error = ng_btsocket_hci_raw_send_ngmsg(path, 1149 NGM_HCI_NODE_FLUSH_NEIGHBOR_CACHE, 1150 NULL, 0); 1151 else 1152 error = EPERM; 1153 break; 1154 1155 case SIOC_HCI_RAW_NODE_GET_NEIGHBOR_CACHE: { 1156 struct ng_btsocket_hci_raw_node_neighbor_cache *p = 1157 (struct ng_btsocket_hci_raw_node_neighbor_cache *) data; 1158 ng_hci_node_get_neighbor_cache_ep *p1 = NULL; 1159 ng_hci_node_neighbor_cache_entry_ep *p2 = NULL; 1160 1161 if (p->num_entries <= 0 || 1162 p->num_entries > NG_HCI_MAX_NEIGHBOR_NUM || 1163 p->entries == NULL) { 1164 mtx_unlock(&pcb->pcb_mtx); 1165 return (EINVAL); 1166 } 1167 1168 NG_MKMESSAGE(msg, NGM_HCI_COOKIE, 1169 NGM_HCI_NODE_GET_NEIGHBOR_CACHE, 0, M_NOWAIT); 1170 if (msg == NULL) { 1171 mtx_unlock(&pcb->pcb_mtx); 1172 return (ENOMEM); 1173 } 1174 ng_btsocket_hci_raw_get_token(&msg->header.token); 1175 pcb->token = msg->header.token; 1176 pcb->msg = NULL; 1177 1178 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, path, 0); 1179 if (error != 0) { 1180 pcb->token = 0; 1181 mtx_unlock(&pcb->pcb_mtx); 1182 return (error); 1183 } 1184 1185 error = msleep(&pcb->msg, &pcb->pcb_mtx, 1186 PZERO|PCATCH, "hcictl", 1187 ng_btsocket_hci_raw_ioctl_timeout * hz); 1188 pcb->token = 0; 1189 1190 if (error != 0) { 1191 mtx_unlock(&pcb->pcb_mtx); 1192 return (error); 1193 } 1194 1195 msg = pcb->msg; 1196 pcb->msg = NULL; 1197 1198 mtx_unlock(&pcb->pcb_mtx); 1199 1200 if (msg != NULL && 1201 msg->header.cmd == NGM_HCI_NODE_GET_NEIGHBOR_CACHE) { 1202 /* Return data back to user space */ 1203 p1 = (ng_hci_node_get_neighbor_cache_ep *)(msg->data); 1204 p2 = (ng_hci_node_neighbor_cache_entry_ep *)(p1 + 1); 1205 1206 p->num_entries = min(p->num_entries, p1->num_entries); 1207 if (p->num_entries > 0) 1208 error = copyout((caddr_t) p2, 1209 (caddr_t) p->entries, 1210 p->num_entries * sizeof(*p2)); 1211 } else 1212 error = EINVAL; 1213 1214 NG_FREE_MSG(msg); /* checks for != NULL */ 1215 return (error); 1216 } /* NOTREACHED */ 1217 1218 case SIOC_HCI_RAW_NODE_GET_CON_LIST: { 1219 struct ng_btsocket_hci_raw_con_list *p = 1220 (struct ng_btsocket_hci_raw_con_list *) data; 1221 ng_hci_node_con_list_ep *p1 = NULL; 1222 ng_hci_node_con_ep *p2 = NULL; 1223 1224 if (p->num_connections == 0 || 1225 p->num_connections > NG_HCI_MAX_CON_NUM || 1226 p->connections == NULL) { 1227 mtx_unlock(&pcb->pcb_mtx); 1228 return (EINVAL); 1229 } 1230 1231 NG_MKMESSAGE(msg, NGM_HCI_COOKIE, NGM_HCI_NODE_GET_CON_LIST, 1232 0, M_NOWAIT); 1233 if (msg == NULL) { 1234 mtx_unlock(&pcb->pcb_mtx); 1235 return (ENOMEM); 1236 } 1237 ng_btsocket_hci_raw_get_token(&msg->header.token); 1238 pcb->token = msg->header.token; 1239 pcb->msg = NULL; 1240 1241 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, path, 0); 1242 if (error != 0) { 1243 pcb->token = 0; 1244 mtx_unlock(&pcb->pcb_mtx); 1245 return (error); 1246 } 1247 1248 error = msleep(&pcb->msg, &pcb->pcb_mtx, 1249 PZERO|PCATCH, "hcictl", 1250 ng_btsocket_hci_raw_ioctl_timeout * hz); 1251 pcb->token = 0; 1252 1253 if (error != 0) { 1254 mtx_unlock(&pcb->pcb_mtx); 1255 return (error); 1256 } 1257 1258 msg = pcb->msg; 1259 pcb->msg = NULL; 1260 1261 mtx_unlock(&pcb->pcb_mtx); 1262 1263 if (msg != NULL && 1264 msg->header.cmd == NGM_HCI_NODE_GET_CON_LIST) { 1265 /* Return data back to user space */ 1266 p1 = (ng_hci_node_con_list_ep *)(msg->data); 1267 p2 = (ng_hci_node_con_ep *)(p1 + 1); 1268 1269 p->num_connections = min(p->num_connections, 1270 p1->num_connections); 1271 if (p->num_connections > 0) 1272 error = copyout((caddr_t) p2, 1273 (caddr_t) p->connections, 1274 p->num_connections * sizeof(*p2)); 1275 } else 1276 error = EINVAL; 1277 1278 NG_FREE_MSG(msg); /* checks for != NULL */ 1279 return (error); 1280 } /* NOTREACHED */ 1281 1282 case SIOC_HCI_RAW_NODE_GET_LINK_POLICY_MASK: { 1283 struct ng_btsocket_hci_raw_node_link_policy_mask *p = 1284 (struct ng_btsocket_hci_raw_node_link_policy_mask *) 1285 data; 1286 1287 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1288 NGM_HCI_NODE_GET_LINK_POLICY_SETTINGS_MASK, 1289 &p->policy_mask, sizeof(p->policy_mask)); 1290 } break; 1291 1292 case SIOC_HCI_RAW_NODE_SET_LINK_POLICY_MASK: { 1293 struct ng_btsocket_hci_raw_node_link_policy_mask *p = 1294 (struct ng_btsocket_hci_raw_node_link_policy_mask *) 1295 data; 1296 1297 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1298 error = ng_btsocket_hci_raw_send_ngmsg(path, 1299 NGM_HCI_NODE_SET_LINK_POLICY_SETTINGS_MASK, 1300 &p->policy_mask, 1301 sizeof(p->policy_mask)); 1302 else 1303 error = EPERM; 1304 } break; 1305 1306 case SIOC_HCI_RAW_NODE_GET_PACKET_MASK: { 1307 struct ng_btsocket_hci_raw_node_packet_mask *p = 1308 (struct ng_btsocket_hci_raw_node_packet_mask *) data; 1309 1310 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1311 NGM_HCI_NODE_GET_PACKET_MASK, 1312 &p->packet_mask, sizeof(p->packet_mask)); 1313 } break; 1314 1315 case SIOC_HCI_RAW_NODE_SET_PACKET_MASK: { 1316 struct ng_btsocket_hci_raw_node_packet_mask *p = 1317 (struct ng_btsocket_hci_raw_node_packet_mask *) data; 1318 1319 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1320 error = ng_btsocket_hci_raw_send_ngmsg(path, 1321 NGM_HCI_NODE_SET_PACKET_MASK, 1322 &p->packet_mask, 1323 sizeof(p->packet_mask)); 1324 else 1325 error = EPERM; 1326 } break; 1327 1328 case SIOC_HCI_RAW_NODE_GET_ROLE_SWITCH: { 1329 struct ng_btsocket_hci_raw_node_role_switch *p = 1330 (struct ng_btsocket_hci_raw_node_role_switch *) data; 1331 1332 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1333 NGM_HCI_NODE_GET_ROLE_SWITCH, 1334 &p->role_switch, sizeof(p->role_switch)); 1335 } break; 1336 1337 case SIOC_HCI_RAW_NODE_SET_ROLE_SWITCH: { 1338 struct ng_btsocket_hci_raw_node_role_switch *p = 1339 (struct ng_btsocket_hci_raw_node_role_switch *) data; 1340 1341 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1342 error = ng_btsocket_hci_raw_send_ngmsg(path, 1343 NGM_HCI_NODE_SET_ROLE_SWITCH, 1344 &p->role_switch, 1345 sizeof(p->role_switch)); 1346 else 1347 error = EPERM; 1348 } break; 1349 1350 case SIOC_HCI_RAW_NODE_LIST_NAMES: { 1351 struct ng_btsocket_hci_raw_node_list_names *nl = 1352 (struct ng_btsocket_hci_raw_node_list_names *) data; 1353 struct nodeinfo *ni = nl->names; 1354 1355 if (nl->num_names == 0) { 1356 mtx_unlock(&pcb->pcb_mtx); 1357 return (EINVAL); 1358 } 1359 1360 NG_MKMESSAGE(msg, NGM_GENERIC_COOKIE, NGM_LISTNAMES, 1361 0, M_NOWAIT); 1362 if (msg == NULL) { 1363 mtx_unlock(&pcb->pcb_mtx); 1364 return (ENOMEM); 1365 } 1366 ng_btsocket_hci_raw_get_token(&msg->header.token); 1367 pcb->token = msg->header.token; 1368 pcb->msg = NULL; 1369 1370 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, ".:", 0); 1371 if (error != 0) { 1372 pcb->token = 0; 1373 mtx_unlock(&pcb->pcb_mtx); 1374 return (error); 1375 } 1376 1377 error = msleep(&pcb->msg, &pcb->pcb_mtx, 1378 PZERO|PCATCH, "hcictl", 1379 ng_btsocket_hci_raw_ioctl_timeout * hz); 1380 pcb->token = 0; 1381 1382 if (error != 0) { 1383 mtx_unlock(&pcb->pcb_mtx); 1384 return (error); 1385 } 1386 1387 msg = pcb->msg; 1388 pcb->msg = NULL; 1389 1390 mtx_unlock(&pcb->pcb_mtx); 1391 1392 if (msg != NULL && msg->header.cmd == NGM_LISTNAMES) { 1393 /* Return data back to user space */ 1394 struct namelist *nl1 = (struct namelist *) msg->data; 1395 struct nodeinfo *ni1 = &nl1->nodeinfo[0]; 1396 1397 while (nl->num_names > 0 && nl1->numnames > 0) { 1398 if (strcmp(ni1->type, NG_HCI_NODE_TYPE) == 0) { 1399 error = copyout((caddr_t) ni1, 1400 (caddr_t) ni, 1401 sizeof(*ni)); 1402 if (error != 0) 1403 break; 1404 1405 nl->num_names --; 1406 ni ++; 1407 } 1408 1409 nl1->numnames --; 1410 ni1 ++; 1411 } 1412 1413 nl->num_names = ni - nl->names; 1414 } else 1415 error = EINVAL; 1416 1417 NG_FREE_MSG(msg); /* checks for != NULL */ 1418 return (error); 1419 } /* NOTREACHED */ 1420 1421 default: 1422 error = EINVAL; 1423 break; 1424 } 1425 1426 mtx_unlock(&pcb->pcb_mtx); 1427 1428 return (error); 1429 } /* ng_btsocket_hci_raw_control */ 1430 1431 /* 1432 * Process getsockopt/setsockopt system calls 1433 */ 1434 1435 int 1436 ng_btsocket_hci_raw_ctloutput(struct socket *so, struct sockopt *sopt) 1437 { 1438 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1439 struct ng_btsocket_hci_raw_filter filter; 1440 int error = 0, dir; 1441 1442 if (pcb == NULL) 1443 return (EINVAL); 1444 if (ng_btsocket_hci_raw_node == NULL) 1445 return (EINVAL); 1446 1447 if (sopt->sopt_level != SOL_HCI_RAW) 1448 return (0); 1449 1450 mtx_lock(&pcb->pcb_mtx); 1451 1452 switch (sopt->sopt_dir) { 1453 case SOPT_GET: 1454 switch (sopt->sopt_name) { 1455 case SO_HCI_RAW_FILTER: 1456 error = sooptcopyout(sopt, &pcb->filter, 1457 sizeof(pcb->filter)); 1458 break; 1459 1460 case SO_HCI_RAW_DIRECTION: 1461 dir = (pcb->flags & NG_BTSOCKET_HCI_RAW_DIRECTION)?1:0; 1462 error = sooptcopyout(sopt, &dir, sizeof(dir)); 1463 break; 1464 1465 default: 1466 error = EINVAL; 1467 break; 1468 } 1469 break; 1470 1471 case SOPT_SET: 1472 switch (sopt->sopt_name) { 1473 case SO_HCI_RAW_FILTER: 1474 error = sooptcopyin(sopt, &filter, sizeof(filter), 1475 sizeof(filter)); 1476 if (error == 0) 1477 bcopy(&filter, &pcb->filter, 1478 sizeof(pcb->filter)); 1479 break; 1480 1481 case SO_HCI_RAW_DIRECTION: 1482 error = sooptcopyin(sopt, &dir, sizeof(dir), 1483 sizeof(dir)); 1484 if (error != 0) 1485 break; 1486 1487 if (dir) 1488 pcb->flags |= NG_BTSOCKET_HCI_RAW_DIRECTION; 1489 else 1490 pcb->flags &= ~NG_BTSOCKET_HCI_RAW_DIRECTION; 1491 break; 1492 1493 default: 1494 error = EINVAL; 1495 break; 1496 } 1497 break; 1498 1499 default: 1500 error = EINVAL; 1501 break; 1502 } 1503 1504 mtx_unlock(&pcb->pcb_mtx); 1505 1506 return (error); 1507 } /* ng_btsocket_hci_raw_ctloutput */ 1508 1509 /* 1510 * Detach raw HCI socket 1511 */ 1512 1513 void 1514 ng_btsocket_hci_raw_detach(struct socket *so) 1515 { 1516 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1517 1518 KASSERT(pcb != NULL, ("ng_btsocket_hci_raw_detach: pcb == NULL")); 1519 1520 if (ng_btsocket_hci_raw_node == NULL) 1521 return; 1522 1523 mtx_lock(&ng_btsocket_hci_raw_sockets_mtx); 1524 mtx_lock(&pcb->pcb_mtx); 1525 1526 LIST_REMOVE(pcb, next); 1527 1528 mtx_unlock(&pcb->pcb_mtx); 1529 mtx_unlock(&ng_btsocket_hci_raw_sockets_mtx); 1530 1531 mtx_destroy(&pcb->pcb_mtx); 1532 1533 bzero(pcb, sizeof(*pcb)); 1534 free(pcb, M_NETGRAPH_BTSOCKET_HCI_RAW); 1535 1536 so->so_pcb = NULL; 1537 } /* ng_btsocket_hci_raw_detach */ 1538 1539 /* 1540 * Disconnect raw HCI socket 1541 */ 1542 1543 int 1544 ng_btsocket_hci_raw_disconnect(struct socket *so) 1545 { 1546 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1547 1548 if (pcb == NULL) 1549 return (EINVAL); 1550 if (ng_btsocket_hci_raw_node == NULL) 1551 return (EINVAL); 1552 1553 mtx_lock(&pcb->pcb_mtx); 1554 soisdisconnected(so); 1555 mtx_unlock(&pcb->pcb_mtx); 1556 1557 return (0); 1558 } /* ng_btsocket_hci_raw_disconnect */ 1559 1560 /* 1561 * Get socket peer's address 1562 */ 1563 1564 int 1565 ng_btsocket_hci_raw_peeraddr(struct socket *so, struct sockaddr **nam) 1566 { 1567 return (ng_btsocket_hci_raw_sockaddr(so, nam)); 1568 } /* ng_btsocket_hci_raw_peeraddr */ 1569 1570 /* 1571 * Send data 1572 */ 1573 1574 int 1575 ng_btsocket_hci_raw_send(struct socket *so, int flags, struct mbuf *m, 1576 struct sockaddr *sa, struct mbuf *control, struct thread *td) 1577 { 1578 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1579 struct mbuf *nam = NULL; 1580 int error = 0; 1581 1582 if (ng_btsocket_hci_raw_node == NULL) { 1583 error = ENETDOWN; 1584 goto drop; 1585 } 1586 if (pcb == NULL) { 1587 error = EINVAL; 1588 goto drop; 1589 } 1590 if (control != NULL) { 1591 error = EINVAL; 1592 goto drop; 1593 } 1594 1595 if (m->m_pkthdr.len < sizeof(ng_hci_cmd_pkt_t) || 1596 m->m_pkthdr.len > sizeof(ng_hci_cmd_pkt_t) + NG_HCI_CMD_PKT_SIZE) { 1597 error = EMSGSIZE; 1598 goto drop; 1599 } 1600 1601 if (m->m_len < sizeof(ng_hci_cmd_pkt_t)) { 1602 if ((m = m_pullup(m, sizeof(ng_hci_cmd_pkt_t))) == NULL) { 1603 error = ENOBUFS; 1604 goto drop; 1605 } 1606 } 1607 if (*mtod(m, u_int8_t *) != NG_HCI_CMD_PKT) { 1608 error = ENOTSUP; 1609 goto drop; 1610 } 1611 1612 mtx_lock(&pcb->pcb_mtx); 1613 1614 error = ng_btsocket_hci_raw_filter(pcb, m, 0); 1615 if (error != 0) { 1616 mtx_unlock(&pcb->pcb_mtx); 1617 goto drop; 1618 } 1619 1620 if (sa == NULL) { 1621 if (pcb->addr.hci_node[0] == 0) { 1622 mtx_unlock(&pcb->pcb_mtx); 1623 error = EDESTADDRREQ; 1624 goto drop; 1625 } 1626 1627 sa = (struct sockaddr *) &pcb->addr; 1628 } 1629 1630 MGET(nam, M_NOWAIT, MT_SONAME); 1631 if (nam == NULL) { 1632 mtx_unlock(&pcb->pcb_mtx); 1633 error = ENOBUFS; 1634 goto drop; 1635 } 1636 1637 nam->m_len = sizeof(struct sockaddr_hci); 1638 bcopy(sa,mtod(nam, struct sockaddr_hci *),sizeof(struct sockaddr_hci)); 1639 1640 nam->m_next = m; 1641 m = NULL; 1642 1643 mtx_unlock(&pcb->pcb_mtx); 1644 1645 return (ng_send_fn(ng_btsocket_hci_raw_node, NULL, 1646 ng_btsocket_hci_raw_output, nam, 0)); 1647 drop: 1648 NG_FREE_M(control); /* NG_FREE_M checks for != NULL */ 1649 NG_FREE_M(nam); 1650 NG_FREE_M(m); 1651 1652 return (error); 1653 } /* ng_btsocket_hci_raw_send */ 1654 1655 /* 1656 * Get socket address 1657 */ 1658 1659 int 1660 ng_btsocket_hci_raw_sockaddr(struct socket *so, struct sockaddr **nam) 1661 { 1662 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1663 struct sockaddr_hci sa; 1664 1665 if (pcb == NULL) 1666 return (EINVAL); 1667 if (ng_btsocket_hci_raw_node == NULL) 1668 return (EINVAL); 1669 1670 bzero(&sa, sizeof(sa)); 1671 sa.hci_len = sizeof(sa); 1672 sa.hci_family = AF_BLUETOOTH; 1673 1674 mtx_lock(&pcb->pcb_mtx); 1675 strlcpy(sa.hci_node, pcb->addr.hci_node, sizeof(sa.hci_node)); 1676 mtx_unlock(&pcb->pcb_mtx); 1677 1678 *nam = sodupsockaddr((struct sockaddr *) &sa, M_NOWAIT); 1679 1680 return ((*nam == NULL)? ENOMEM : 0); 1681 } /* ng_btsocket_hci_raw_sockaddr */ 1682