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, CTLFLAG_RW, 132 0, "Bluetooth raw HCI sockets family"); 133 SYSCTL_UINT(_net_bluetooth_hci_sockets_raw, OID_AUTO, debug_level, CTLFLAG_RW, 134 &ng_btsocket_hci_raw_debug_level, NG_BTSOCKET_WARN_LEVEL, 135 "Bluetooth raw HCI sockets debug level"); 136 SYSCTL_UINT(_net_bluetooth_hci_sockets_raw, OID_AUTO, ioctl_timeout, CTLFLAG_RW, 137 &ng_btsocket_hci_raw_ioctl_timeout, 5, 138 "Bluetooth raw HCI sockets ioctl timeout"); 139 SYSCTL_UINT(_net_bluetooth_hci_sockets_raw, OID_AUTO, queue_len, CTLFLAG_RD, 140 &ng_btsocket_hci_raw_queue.len, 0, 141 "Bluetooth raw HCI sockets input queue length"); 142 SYSCTL_UINT(_net_bluetooth_hci_sockets_raw, OID_AUTO, queue_maxlen, CTLFLAG_RD, 143 &ng_btsocket_hci_raw_queue.maxlen, 0, 144 "Bluetooth raw HCI sockets input queue max. length"); 145 SYSCTL_UINT(_net_bluetooth_hci_sockets_raw, OID_AUTO, queue_drops, CTLFLAG_RD, 146 &ng_btsocket_hci_raw_queue.drops, 0, 147 "Bluetooth raw HCI sockets input queue drops"); 148 149 /* Debug */ 150 #define NG_BTSOCKET_HCI_RAW_INFO \ 151 if (ng_btsocket_hci_raw_debug_level >= NG_BTSOCKET_INFO_LEVEL && \ 152 ppsratecheck(&ng_btsocket_hci_raw_lasttime, &ng_btsocket_hci_raw_curpps, 1)) \ 153 printf 154 155 #define NG_BTSOCKET_HCI_RAW_WARN \ 156 if (ng_btsocket_hci_raw_debug_level >= NG_BTSOCKET_WARN_LEVEL && \ 157 ppsratecheck(&ng_btsocket_hci_raw_lasttime, &ng_btsocket_hci_raw_curpps, 1)) \ 158 printf 159 160 #define NG_BTSOCKET_HCI_RAW_ERR \ 161 if (ng_btsocket_hci_raw_debug_level >= NG_BTSOCKET_ERR_LEVEL && \ 162 ppsratecheck(&ng_btsocket_hci_raw_lasttime, &ng_btsocket_hci_raw_curpps, 1)) \ 163 printf 164 165 #define NG_BTSOCKET_HCI_RAW_ALERT \ 166 if (ng_btsocket_hci_raw_debug_level >= NG_BTSOCKET_ALERT_LEVEL && \ 167 ppsratecheck(&ng_btsocket_hci_raw_lasttime, &ng_btsocket_hci_raw_curpps, 1)) \ 168 printf 169 170 /**************************************************************************** 171 **************************************************************************** 172 ** Netgraph specific 173 **************************************************************************** 174 ****************************************************************************/ 175 176 /* 177 * Netgraph node constructor. Do not allow to create node of this type. 178 */ 179 180 static int 181 ng_btsocket_hci_raw_node_constructor(node_p node) 182 { 183 return (EINVAL); 184 } /* ng_btsocket_hci_raw_node_constructor */ 185 186 /* 187 * Netgraph node destructor. Just let old node go and create new fresh one. 188 */ 189 190 static int 191 ng_btsocket_hci_raw_node_shutdown(node_p node) 192 { 193 int error = 0; 194 195 NG_NODE_UNREF(node); 196 197 error = ng_make_node_common(&typestruct, &ng_btsocket_hci_raw_node); 198 if (error != 0) { 199 NG_BTSOCKET_HCI_RAW_ALERT( 200 "%s: Could not create Netgraph node, error=%d\n", __func__, error); 201 202 ng_btsocket_hci_raw_node = NULL; 203 204 return (ENOMEM); 205 } 206 207 error = ng_name_node(ng_btsocket_hci_raw_node, 208 NG_BTSOCKET_HCI_RAW_NODE_TYPE); 209 if (error != 0) { 210 NG_BTSOCKET_HCI_RAW_ALERT( 211 "%s: Could not name Netgraph node, error=%d\n", __func__, error); 212 213 NG_NODE_UNREF(ng_btsocket_hci_raw_node); 214 ng_btsocket_hci_raw_node = NULL; 215 216 return (EINVAL); 217 } 218 219 return (0); 220 } /* ng_btsocket_hci_raw_node_shutdown */ 221 222 /* 223 * Create new hook. Just say "yes" 224 */ 225 226 static int 227 ng_btsocket_hci_raw_node_newhook(node_p node, hook_p hook, char const *name) 228 { 229 return (0); 230 } /* ng_btsocket_hci_raw_node_newhook */ 231 232 /* 233 * Connect hook. Just say "yes" 234 */ 235 236 static int 237 ng_btsocket_hci_raw_node_connect(hook_p hook) 238 { 239 return (0); 240 } /* ng_btsocket_hci_raw_node_connect */ 241 242 /* 243 * Disconnect hook 244 */ 245 246 static int 247 ng_btsocket_hci_raw_node_disconnect(hook_p hook) 248 { 249 return (0); 250 } /* ng_btsocket_hci_raw_node_disconnect */ 251 252 /* 253 * Receive control message. 254 * Make sure it is a message from HCI node and it is a response. 255 * Enqueue item and schedule input task. 256 */ 257 258 static int 259 ng_btsocket_hci_raw_node_rcvmsg(node_p node, item_p item, hook_p lasthook) 260 { 261 struct ng_mesg *msg = NGI_MSG(item); /* item still has message */ 262 int error = 0; 263 264 /* 265 * Check for empty sockets list creates LOR when both sender and 266 * receiver device are connected to the same host, so remove it 267 * for now 268 */ 269 270 if (msg != NULL && 271 (msg->header.typecookie == NGM_HCI_COOKIE || 272 msg->header.typecookie == NGM_GENERIC_COOKIE) && 273 msg->header.flags & NGF_RESP) { 274 if (msg->header.token == 0) { 275 NG_FREE_ITEM(item); 276 return (0); 277 } 278 279 mtx_lock(&ng_btsocket_hci_raw_queue_mtx); 280 if (NG_BT_ITEMQ_FULL(&ng_btsocket_hci_raw_queue)) { 281 NG_BTSOCKET_HCI_RAW_ERR( 282 "%s: Input queue is full\n", __func__); 283 284 NG_BT_ITEMQ_DROP(&ng_btsocket_hci_raw_queue); 285 NG_FREE_ITEM(item); 286 error = ENOBUFS; 287 } else { 288 NG_BT_ITEMQ_ENQUEUE(&ng_btsocket_hci_raw_queue, item); 289 error = ng_btsocket_hci_raw_wakeup_input_task(); 290 } 291 mtx_unlock(&ng_btsocket_hci_raw_queue_mtx); 292 } else { 293 NG_FREE_ITEM(item); 294 error = EINVAL; 295 } 296 297 return (error); 298 } /* ng_btsocket_hci_raw_node_rcvmsg */ 299 300 /* 301 * Receive packet from the one of our hook. 302 * Prepend every packet with sockaddr_hci and record sender's node name. 303 * Enqueue item and schedule input task. 304 */ 305 306 static int 307 ng_btsocket_hci_raw_node_rcvdata(hook_p hook, item_p item) 308 { 309 struct mbuf *nam = NULL; 310 int error; 311 312 /* 313 * Check for empty sockets list creates LOR when both sender and 314 * receiver device are connected to the same host, so remove it 315 * for now 316 */ 317 318 MGET(nam, M_NOWAIT, MT_SONAME); 319 if (nam != NULL) { 320 struct sockaddr_hci *sa = mtod(nam, struct sockaddr_hci *); 321 322 nam->m_len = sizeof(struct sockaddr_hci); 323 324 sa->hci_len = sizeof(*sa); 325 sa->hci_family = AF_BLUETOOTH; 326 strlcpy(sa->hci_node, NG_PEER_NODE_NAME(hook), 327 sizeof(sa->hci_node)); 328 329 NGI_GET_M(item, nam->m_next); 330 NGI_M(item) = nam; 331 332 mtx_lock(&ng_btsocket_hci_raw_queue_mtx); 333 if (NG_BT_ITEMQ_FULL(&ng_btsocket_hci_raw_queue)) { 334 NG_BTSOCKET_HCI_RAW_ERR( 335 "%s: Input queue is full\n", __func__); 336 337 NG_BT_ITEMQ_DROP(&ng_btsocket_hci_raw_queue); 338 NG_FREE_ITEM(item); 339 error = ENOBUFS; 340 } else { 341 NG_BT_ITEMQ_ENQUEUE(&ng_btsocket_hci_raw_queue, item); 342 error = ng_btsocket_hci_raw_wakeup_input_task(); 343 } 344 mtx_unlock(&ng_btsocket_hci_raw_queue_mtx); 345 } else { 346 NG_BTSOCKET_HCI_RAW_ERR( 347 "%s: Failed to allocate address mbuf\n", __func__); 348 349 NG_FREE_ITEM(item); 350 error = ENOBUFS; 351 } 352 353 return (error); 354 } /* ng_btsocket_hci_raw_node_rcvdata */ 355 356 /**************************************************************************** 357 **************************************************************************** 358 ** Sockets specific 359 **************************************************************************** 360 ****************************************************************************/ 361 362 /* 363 * Get next token. We need token to avoid theoretical race where process 364 * submits ioctl() message then interrupts ioctl() and re-submits another 365 * ioctl() on the same socket *before* first ioctl() complete. 366 */ 367 368 static void 369 ng_btsocket_hci_raw_get_token(u_int32_t *token) 370 { 371 mtx_lock(&ng_btsocket_hci_raw_token_mtx); 372 373 if (++ ng_btsocket_hci_raw_token == 0) 374 ng_btsocket_hci_raw_token = 1; 375 376 *token = ng_btsocket_hci_raw_token; 377 378 mtx_unlock(&ng_btsocket_hci_raw_token_mtx); 379 } /* ng_btsocket_hci_raw_get_token */ 380 381 /* 382 * Send Netgraph message to the node - do not expect reply 383 */ 384 385 static int 386 ng_btsocket_hci_raw_send_ngmsg(char *path, int cmd, void *arg, int arglen) 387 { 388 struct ng_mesg *msg = NULL; 389 int error = 0; 390 391 NG_MKMESSAGE(msg, NGM_HCI_COOKIE, cmd, arglen, M_NOWAIT); 392 if (msg == NULL) 393 return (ENOMEM); 394 395 if (arg != NULL && arglen > 0) 396 bcopy(arg, msg->data, arglen); 397 398 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, path, 0); 399 400 return (error); 401 } /* ng_btsocket_hci_raw_send_ngmsg */ 402 403 /* 404 * Send Netgraph message to the node (no data) and wait for reply 405 */ 406 407 static int 408 ng_btsocket_hci_raw_send_sync_ngmsg(ng_btsocket_hci_raw_pcb_p pcb, char *path, 409 int cmd, void *rsp, int rsplen) 410 { 411 struct ng_mesg *msg = NULL; 412 int error = 0; 413 414 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 415 416 NG_MKMESSAGE(msg, NGM_HCI_COOKIE, cmd, 0, M_NOWAIT); 417 if (msg == NULL) 418 return (ENOMEM); 419 420 ng_btsocket_hci_raw_get_token(&msg->header.token); 421 pcb->token = msg->header.token; 422 pcb->msg = NULL; 423 424 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, path, 0); 425 if (error != 0) { 426 pcb->token = 0; 427 return (error); 428 } 429 430 error = msleep(&pcb->msg, &pcb->pcb_mtx, PZERO|PCATCH, "hcictl", 431 ng_btsocket_hci_raw_ioctl_timeout * hz); 432 pcb->token = 0; 433 434 if (error != 0) 435 return (error); 436 437 if (pcb->msg != NULL && pcb->msg->header.cmd == cmd) 438 bcopy(pcb->msg->data, rsp, rsplen); 439 else 440 error = EINVAL; 441 442 NG_FREE_MSG(pcb->msg); /* checks for != NULL */ 443 444 return (0); 445 } /* ng_btsocket_hci_raw_send_sync_ngmsg */ 446 447 /* 448 * Create control information for the packet 449 */ 450 451 static void 452 ng_btsocket_hci_raw_savctl(ng_btsocket_hci_raw_pcb_p pcb, struct mbuf **ctl, 453 struct mbuf *m) 454 { 455 int dir; 456 struct timeval tv; 457 458 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 459 460 if (pcb->flags & NG_BTSOCKET_HCI_RAW_DIRECTION) { 461 dir = (m->m_flags & M_PROTO1)? 1 : 0; 462 *ctl = sbcreatecontrol((caddr_t) &dir, sizeof(dir), 463 SCM_HCI_RAW_DIRECTION, SOL_HCI_RAW); 464 if (*ctl != NULL) 465 ctl = &((*ctl)->m_next); 466 } 467 468 if (pcb->so->so_options & SO_TIMESTAMP) { 469 microtime(&tv); 470 *ctl = sbcreatecontrol((caddr_t) &tv, sizeof(tv), 471 SCM_TIMESTAMP, SOL_SOCKET); 472 if (*ctl != NULL) 473 ctl = &((*ctl)->m_next); 474 } 475 } /* ng_btsocket_hci_raw_savctl */ 476 477 /* 478 * Raw HCI sockets data input routine 479 */ 480 481 static void 482 ng_btsocket_hci_raw_data_input(struct mbuf *nam) 483 { 484 ng_btsocket_hci_raw_pcb_p pcb = NULL; 485 struct mbuf *m0 = NULL, *m = NULL; 486 struct sockaddr_hci *sa = NULL; 487 488 m0 = nam->m_next; 489 nam->m_next = NULL; 490 491 KASSERT((nam->m_type == MT_SONAME), 492 ("%s: m_type=%d\n", __func__, nam->m_type)); 493 KASSERT((m0->m_flags & M_PKTHDR), 494 ("%s: m_flags=%#x\n", __func__, m0->m_flags)); 495 496 sa = mtod(nam, struct sockaddr_hci *); 497 498 mtx_lock(&ng_btsocket_hci_raw_sockets_mtx); 499 500 LIST_FOREACH(pcb, &ng_btsocket_hci_raw_sockets, next) { 501 502 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); 863 864 /* Commands - Informational */ 865 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_INFO - 1]; 866 bit_set(f, NG_HCI_OCF_READ_LOCAL_VER - 1); 867 bit_set(f, NG_HCI_OCF_READ_LOCAL_FEATURES - 1); 868 bit_set(f, NG_HCI_OCF_READ_BUFFER_SIZE - 1); 869 bit_set(f, NG_HCI_OCF_READ_COUNTRY_CODE - 1); 870 bit_set(f, NG_HCI_OCF_READ_BDADDR - 1); 871 872 /* Commands - Status */ 873 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_STATUS - 1]; 874 bit_set(f, NG_HCI_OCF_READ_FAILED_CONTACT_CNTR - 1); 875 bit_set(f, NG_HCI_OCF_GET_LINK_QUALITY - 1); 876 bit_set(f, NG_HCI_OCF_READ_RSSI - 1); 877 878 /* Commands - Testing */ 879 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_TESTING - 1]; 880 bit_set(f, NG_HCI_OCF_READ_LOOPBACK_MODE - 1); 881 /*Commands - LE*/ 882 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_LE -1]; 883 884 } /* ng_btsocket_hci_raw_init */ 885 886 /* 887 * Abort connection on socket 888 */ 889 890 void 891 ng_btsocket_hci_raw_abort(struct socket *so) 892 { 893 } /* ng_btsocket_hci_raw_abort */ 894 895 void 896 ng_btsocket_hci_raw_close(struct socket *so) 897 { 898 } /* ng_btsocket_hci_raw_close */ 899 900 /* 901 * Create new raw HCI socket 902 */ 903 904 int 905 ng_btsocket_hci_raw_attach(struct socket *so, int proto, struct thread *td) 906 { 907 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 908 int error = 0; 909 910 if (pcb != NULL) 911 return (EISCONN); 912 913 if (ng_btsocket_hci_raw_node == NULL) 914 return (EPROTONOSUPPORT); 915 if (proto != BLUETOOTH_PROTO_HCI) 916 return (EPROTONOSUPPORT); 917 if (so->so_type != SOCK_RAW) 918 return (ESOCKTNOSUPPORT); 919 920 error = soreserve(so, NG_BTSOCKET_HCI_RAW_SENDSPACE, 921 NG_BTSOCKET_HCI_RAW_RECVSPACE); 922 if (error != 0) 923 return (error); 924 925 pcb = malloc(sizeof(*pcb), 926 M_NETGRAPH_BTSOCKET_HCI_RAW, M_NOWAIT|M_ZERO); 927 if (pcb == NULL) 928 return (ENOMEM); 929 930 so->so_pcb = (caddr_t) pcb; 931 pcb->so = so; 932 933 if (priv_check(td, PRIV_NETBLUETOOTH_RAW) == 0) 934 pcb->flags |= NG_BTSOCKET_HCI_RAW_PRIVILEGED; 935 936 /* 937 * Set default socket filter. By default socket only accepts HCI 938 * Command_Complete and Command_Status event packets. 939 */ 940 941 bit_set(pcb->filter.event_mask, NG_HCI_EVENT_COMMAND_COMPL - 1); 942 bit_set(pcb->filter.event_mask, NG_HCI_EVENT_COMMAND_STATUS - 1); 943 944 mtx_init(&pcb->pcb_mtx, "btsocks_hci_raw_pcb_mtx", NULL, MTX_DEF); 945 946 mtx_lock(&ng_btsocket_hci_raw_sockets_mtx); 947 LIST_INSERT_HEAD(&ng_btsocket_hci_raw_sockets, pcb, next); 948 mtx_unlock(&ng_btsocket_hci_raw_sockets_mtx); 949 950 return (0); 951 } /* ng_btsocket_hci_raw_attach */ 952 953 /* 954 * Bind raw HCI socket 955 */ 956 957 int 958 ng_btsocket_hci_raw_bind(struct socket *so, struct sockaddr *nam, 959 struct thread *td) 960 { 961 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 962 struct sockaddr_hci *sa = (struct sockaddr_hci *) nam; 963 964 if (pcb == NULL) 965 return (EINVAL); 966 if (ng_btsocket_hci_raw_node == NULL) 967 return (EINVAL); 968 969 if (sa == NULL) 970 return (EINVAL); 971 if (sa->hci_family != AF_BLUETOOTH) 972 return (EAFNOSUPPORT); 973 if (sa->hci_len != sizeof(*sa)) 974 return (EINVAL); 975 if (sa->hci_node[0] == 0) 976 return (EINVAL); 977 978 mtx_lock(&pcb->pcb_mtx); 979 bcopy(sa, &pcb->addr, sizeof(pcb->addr)); 980 mtx_unlock(&pcb->pcb_mtx); 981 982 return (0); 983 } /* ng_btsocket_hci_raw_bind */ 984 985 /* 986 * Connect raw HCI socket 987 */ 988 989 int 990 ng_btsocket_hci_raw_connect(struct socket *so, struct sockaddr *nam, 991 struct thread *td) 992 { 993 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 994 struct sockaddr_hci *sa = (struct sockaddr_hci *) nam; 995 996 if (pcb == NULL) 997 return (EINVAL); 998 if (ng_btsocket_hci_raw_node == NULL) 999 return (EINVAL); 1000 1001 if (sa == NULL) 1002 return (EINVAL); 1003 if (sa->hci_family != AF_BLUETOOTH) 1004 return (EAFNOSUPPORT); 1005 if (sa->hci_len != sizeof(*sa)) 1006 return (EINVAL); 1007 if (sa->hci_node[0] == 0) 1008 return (EDESTADDRREQ); 1009 1010 mtx_lock(&pcb->pcb_mtx); 1011 1012 if (bcmp(sa, &pcb->addr, sizeof(pcb->addr)) != 0) { 1013 mtx_unlock(&pcb->pcb_mtx); 1014 return (EADDRNOTAVAIL); 1015 } 1016 1017 soisconnected(so); 1018 1019 mtx_unlock(&pcb->pcb_mtx); 1020 1021 return (0); 1022 } /* ng_btsocket_hci_raw_connect */ 1023 1024 /* 1025 * Process ioctl on socket 1026 */ 1027 1028 int 1029 ng_btsocket_hci_raw_control(struct socket *so, u_long cmd, caddr_t data, 1030 struct ifnet *ifp, struct thread *td) 1031 { 1032 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1033 char path[NG_NODESIZ + 1]; 1034 struct ng_mesg *msg = NULL; 1035 int error = 0; 1036 1037 if (pcb == NULL) 1038 return (EINVAL); 1039 if (ng_btsocket_hci_raw_node == NULL) 1040 return (EINVAL); 1041 1042 mtx_lock(&pcb->pcb_mtx); 1043 1044 /* Check if we have device name */ 1045 if (pcb->addr.hci_node[0] == 0) { 1046 mtx_unlock(&pcb->pcb_mtx); 1047 return (EHOSTUNREACH); 1048 } 1049 1050 /* Check if we have pending ioctl() */ 1051 if (pcb->token != 0) { 1052 mtx_unlock(&pcb->pcb_mtx); 1053 return (EBUSY); 1054 } 1055 1056 snprintf(path, sizeof(path), "%s:", pcb->addr.hci_node); 1057 1058 switch (cmd) { 1059 case SIOC_HCI_RAW_NODE_GET_STATE: { 1060 struct ng_btsocket_hci_raw_node_state *p = 1061 (struct ng_btsocket_hci_raw_node_state *) data; 1062 1063 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1064 NGM_HCI_NODE_GET_STATE, 1065 &p->state, sizeof(p->state)); 1066 } break; 1067 1068 case SIOC_HCI_RAW_NODE_INIT: 1069 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1070 error = ng_btsocket_hci_raw_send_ngmsg(path, 1071 NGM_HCI_NODE_INIT, NULL, 0); 1072 else 1073 error = EPERM; 1074 break; 1075 1076 case SIOC_HCI_RAW_NODE_GET_DEBUG: { 1077 struct ng_btsocket_hci_raw_node_debug *p = 1078 (struct ng_btsocket_hci_raw_node_debug *) data; 1079 1080 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1081 NGM_HCI_NODE_GET_DEBUG, 1082 &p->debug, sizeof(p->debug)); 1083 } break; 1084 1085 case SIOC_HCI_RAW_NODE_SET_DEBUG: { 1086 struct ng_btsocket_hci_raw_node_debug *p = 1087 (struct ng_btsocket_hci_raw_node_debug *) data; 1088 1089 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1090 error = ng_btsocket_hci_raw_send_ngmsg(path, 1091 NGM_HCI_NODE_SET_DEBUG, &p->debug, 1092 sizeof(p->debug)); 1093 else 1094 error = EPERM; 1095 } break; 1096 1097 case SIOC_HCI_RAW_NODE_GET_BUFFER: { 1098 struct ng_btsocket_hci_raw_node_buffer *p = 1099 (struct ng_btsocket_hci_raw_node_buffer *) data; 1100 1101 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1102 NGM_HCI_NODE_GET_BUFFER, 1103 &p->buffer, sizeof(p->buffer)); 1104 } break; 1105 1106 case SIOC_HCI_RAW_NODE_GET_BDADDR: { 1107 struct ng_btsocket_hci_raw_node_bdaddr *p = 1108 (struct ng_btsocket_hci_raw_node_bdaddr *) data; 1109 1110 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1111 NGM_HCI_NODE_GET_BDADDR, 1112 &p->bdaddr, sizeof(p->bdaddr)); 1113 } break; 1114 1115 case SIOC_HCI_RAW_NODE_GET_FEATURES: { 1116 struct ng_btsocket_hci_raw_node_features *p = 1117 (struct ng_btsocket_hci_raw_node_features *) data; 1118 1119 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1120 NGM_HCI_NODE_GET_FEATURES, 1121 &p->features, sizeof(p->features)); 1122 } break; 1123 1124 case SIOC_HCI_RAW_NODE_GET_STAT: { 1125 struct ng_btsocket_hci_raw_node_stat *p = 1126 (struct ng_btsocket_hci_raw_node_stat *) data; 1127 1128 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1129 NGM_HCI_NODE_GET_STAT, 1130 &p->stat, sizeof(p->stat)); 1131 } break; 1132 1133 case SIOC_HCI_RAW_NODE_RESET_STAT: 1134 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1135 error = ng_btsocket_hci_raw_send_ngmsg(path, 1136 NGM_HCI_NODE_RESET_STAT, NULL, 0); 1137 else 1138 error = EPERM; 1139 break; 1140 1141 case SIOC_HCI_RAW_NODE_FLUSH_NEIGHBOR_CACHE: 1142 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1143 error = ng_btsocket_hci_raw_send_ngmsg(path, 1144 NGM_HCI_NODE_FLUSH_NEIGHBOR_CACHE, 1145 NULL, 0); 1146 else 1147 error = EPERM; 1148 break; 1149 1150 case SIOC_HCI_RAW_NODE_GET_NEIGHBOR_CACHE: { 1151 struct ng_btsocket_hci_raw_node_neighbor_cache *p = 1152 (struct ng_btsocket_hci_raw_node_neighbor_cache *) data; 1153 ng_hci_node_get_neighbor_cache_ep *p1 = NULL; 1154 ng_hci_node_neighbor_cache_entry_ep *p2 = NULL; 1155 1156 if (p->num_entries <= 0 || 1157 p->num_entries > NG_HCI_MAX_NEIGHBOR_NUM || 1158 p->entries == NULL) { 1159 error = EINVAL; 1160 break; 1161 } 1162 1163 NG_MKMESSAGE(msg, NGM_HCI_COOKIE, 1164 NGM_HCI_NODE_GET_NEIGHBOR_CACHE, 0, M_NOWAIT); 1165 if (msg == NULL) { 1166 error = ENOMEM; 1167 break; 1168 } 1169 ng_btsocket_hci_raw_get_token(&msg->header.token); 1170 pcb->token = msg->header.token; 1171 pcb->msg = NULL; 1172 1173 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, path, 0); 1174 if (error != 0) { 1175 pcb->token = 0; 1176 break; 1177 } 1178 1179 error = msleep(&pcb->msg, &pcb->pcb_mtx, 1180 PZERO|PCATCH, "hcictl", 1181 ng_btsocket_hci_raw_ioctl_timeout * hz); 1182 pcb->token = 0; 1183 1184 if (error != 0) 1185 break; 1186 1187 if (pcb->msg != NULL && 1188 pcb->msg->header.cmd == NGM_HCI_NODE_GET_NEIGHBOR_CACHE) { 1189 /* Return data back to user space */ 1190 p1 = (ng_hci_node_get_neighbor_cache_ep *) 1191 (pcb->msg->data); 1192 p2 = (ng_hci_node_neighbor_cache_entry_ep *) 1193 (p1 + 1); 1194 1195 p->num_entries = min(p->num_entries, p1->num_entries); 1196 if (p->num_entries > 0) 1197 error = copyout((caddr_t) p2, 1198 (caddr_t) p->entries, 1199 p->num_entries * sizeof(*p2)); 1200 } else 1201 error = EINVAL; 1202 1203 NG_FREE_MSG(pcb->msg); /* checks for != NULL */ 1204 }break; 1205 1206 case SIOC_HCI_RAW_NODE_GET_CON_LIST: { 1207 struct ng_btsocket_hci_raw_con_list *p = 1208 (struct ng_btsocket_hci_raw_con_list *) data; 1209 ng_hci_node_con_list_ep *p1 = NULL; 1210 ng_hci_node_con_ep *p2 = NULL; 1211 1212 if (p->num_connections == 0 || 1213 p->num_connections > NG_HCI_MAX_CON_NUM || 1214 p->connections == NULL) { 1215 error = EINVAL; 1216 break; 1217 } 1218 1219 NG_MKMESSAGE(msg, NGM_HCI_COOKIE, NGM_HCI_NODE_GET_CON_LIST, 1220 0, M_NOWAIT); 1221 if (msg == NULL) { 1222 error = ENOMEM; 1223 break; 1224 } 1225 ng_btsocket_hci_raw_get_token(&msg->header.token); 1226 pcb->token = msg->header.token; 1227 pcb->msg = NULL; 1228 1229 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, path, 0); 1230 if (error != 0) { 1231 pcb->token = 0; 1232 break; 1233 } 1234 1235 error = msleep(&pcb->msg, &pcb->pcb_mtx, 1236 PZERO|PCATCH, "hcictl", 1237 ng_btsocket_hci_raw_ioctl_timeout * hz); 1238 pcb->token = 0; 1239 1240 if (error != 0) 1241 break; 1242 1243 if (pcb->msg != NULL && 1244 pcb->msg->header.cmd == NGM_HCI_NODE_GET_CON_LIST) { 1245 /* Return data back to user space */ 1246 p1 = (ng_hci_node_con_list_ep *)(pcb->msg->data); 1247 p2 = (ng_hci_node_con_ep *)(p1 + 1); 1248 1249 p->num_connections = min(p->num_connections, 1250 p1->num_connections); 1251 if (p->num_connections > 0) 1252 error = copyout((caddr_t) p2, 1253 (caddr_t) p->connections, 1254 p->num_connections * sizeof(*p2)); 1255 } else 1256 error = EINVAL; 1257 1258 NG_FREE_MSG(pcb->msg); /* checks for != NULL */ 1259 } break; 1260 1261 case SIOC_HCI_RAW_NODE_GET_LINK_POLICY_MASK: { 1262 struct ng_btsocket_hci_raw_node_link_policy_mask *p = 1263 (struct ng_btsocket_hci_raw_node_link_policy_mask *) 1264 data; 1265 1266 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1267 NGM_HCI_NODE_GET_LINK_POLICY_SETTINGS_MASK, 1268 &p->policy_mask, sizeof(p->policy_mask)); 1269 } break; 1270 1271 case SIOC_HCI_RAW_NODE_SET_LINK_POLICY_MASK: { 1272 struct ng_btsocket_hci_raw_node_link_policy_mask *p = 1273 (struct ng_btsocket_hci_raw_node_link_policy_mask *) 1274 data; 1275 1276 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1277 error = ng_btsocket_hci_raw_send_ngmsg(path, 1278 NGM_HCI_NODE_SET_LINK_POLICY_SETTINGS_MASK, 1279 &p->policy_mask, 1280 sizeof(p->policy_mask)); 1281 else 1282 error = EPERM; 1283 } break; 1284 1285 case SIOC_HCI_RAW_NODE_GET_PACKET_MASK: { 1286 struct ng_btsocket_hci_raw_node_packet_mask *p = 1287 (struct ng_btsocket_hci_raw_node_packet_mask *) data; 1288 1289 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1290 NGM_HCI_NODE_GET_PACKET_MASK, 1291 &p->packet_mask, sizeof(p->packet_mask)); 1292 } break; 1293 1294 case SIOC_HCI_RAW_NODE_SET_PACKET_MASK: { 1295 struct ng_btsocket_hci_raw_node_packet_mask *p = 1296 (struct ng_btsocket_hci_raw_node_packet_mask *) 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_PACKET_MASK, 1301 &p->packet_mask, 1302 sizeof(p->packet_mask)); 1303 else 1304 error = EPERM; 1305 } break; 1306 1307 case SIOC_HCI_RAW_NODE_GET_ROLE_SWITCH: { 1308 struct ng_btsocket_hci_raw_node_role_switch *p = 1309 (struct ng_btsocket_hci_raw_node_role_switch *) data; 1310 1311 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1312 NGM_HCI_NODE_GET_ROLE_SWITCH, 1313 &p->role_switch, sizeof(p->role_switch)); 1314 } break; 1315 1316 case SIOC_HCI_RAW_NODE_SET_ROLE_SWITCH: { 1317 struct ng_btsocket_hci_raw_node_role_switch *p = 1318 (struct ng_btsocket_hci_raw_node_role_switch *) 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_ROLE_SWITCH, 1323 &p->role_switch, 1324 sizeof(p->role_switch)); 1325 else 1326 error = EPERM; 1327 } break; 1328 1329 case SIOC_HCI_RAW_NODE_LIST_NAMES: { 1330 struct ng_btsocket_hci_raw_node_list_names *nl = 1331 (struct ng_btsocket_hci_raw_node_list_names *) data; 1332 struct nodeinfo *ni = nl->names; 1333 1334 if (nl->num_names == 0) { 1335 error = EINVAL; 1336 break; 1337 } 1338 1339 NG_MKMESSAGE(msg, NGM_GENERIC_COOKIE, NGM_LISTNAMES, 1340 0, M_NOWAIT); 1341 if (msg == NULL) { 1342 error = ENOMEM; 1343 break; 1344 } 1345 ng_btsocket_hci_raw_get_token(&msg->header.token); 1346 pcb->token = msg->header.token; 1347 pcb->msg = NULL; 1348 1349 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, ".:", 0); 1350 if (error != 0) { 1351 pcb->token = 0; 1352 break; 1353 } 1354 1355 error = msleep(&pcb->msg, &pcb->pcb_mtx, 1356 PZERO|PCATCH, "hcictl", 1357 ng_btsocket_hci_raw_ioctl_timeout * hz); 1358 pcb->token = 0; 1359 1360 if (error != 0) 1361 break; 1362 1363 if (pcb->msg != NULL && pcb->msg->header.cmd == NGM_LISTNAMES) { 1364 /* Return data back to user space */ 1365 struct namelist *nl1 = (struct namelist *) pcb->msg->data; 1366 struct nodeinfo *ni1 = &nl1->nodeinfo[0]; 1367 1368 while (nl->num_names > 0 && nl1->numnames > 0) { 1369 if (strcmp(ni1->type, NG_HCI_NODE_TYPE) == 0) { 1370 error = copyout((caddr_t) ni1, 1371 (caddr_t) ni, 1372 sizeof(*ni)); 1373 if (error != 0) 1374 break; 1375 1376 nl->num_names --; 1377 ni ++; 1378 } 1379 1380 nl1->numnames --; 1381 ni1 ++; 1382 } 1383 1384 nl->num_names = ni - nl->names; 1385 } else 1386 error = EINVAL; 1387 1388 NG_FREE_MSG(pcb->msg); /* checks for != NULL */ 1389 } break; 1390 1391 default: 1392 error = EINVAL; 1393 break; 1394 } 1395 1396 mtx_unlock(&pcb->pcb_mtx); 1397 1398 return (error); 1399 } /* ng_btsocket_hci_raw_control */ 1400 1401 /* 1402 * Process getsockopt/setsockopt system calls 1403 */ 1404 1405 int 1406 ng_btsocket_hci_raw_ctloutput(struct socket *so, struct sockopt *sopt) 1407 { 1408 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1409 struct ng_btsocket_hci_raw_filter filter; 1410 int error = 0, dir; 1411 1412 if (pcb == NULL) 1413 return (EINVAL); 1414 if (ng_btsocket_hci_raw_node == NULL) 1415 return (EINVAL); 1416 1417 if (sopt->sopt_level != SOL_HCI_RAW) 1418 return (0); 1419 1420 mtx_lock(&pcb->pcb_mtx); 1421 1422 switch (sopt->sopt_dir) { 1423 case SOPT_GET: 1424 switch (sopt->sopt_name) { 1425 case SO_HCI_RAW_FILTER: 1426 error = sooptcopyout(sopt, &pcb->filter, 1427 sizeof(pcb->filter)); 1428 break; 1429 1430 case SO_HCI_RAW_DIRECTION: 1431 dir = (pcb->flags & NG_BTSOCKET_HCI_RAW_DIRECTION)?1:0; 1432 error = sooptcopyout(sopt, &dir, sizeof(dir)); 1433 break; 1434 1435 default: 1436 error = EINVAL; 1437 break; 1438 } 1439 break; 1440 1441 case SOPT_SET: 1442 switch (sopt->sopt_name) { 1443 case SO_HCI_RAW_FILTER: 1444 error = sooptcopyin(sopt, &filter, sizeof(filter), 1445 sizeof(filter)); 1446 if (error == 0) 1447 bcopy(&filter, &pcb->filter, 1448 sizeof(pcb->filter)); 1449 break; 1450 1451 case SO_HCI_RAW_DIRECTION: 1452 error = sooptcopyin(sopt, &dir, sizeof(dir), 1453 sizeof(dir)); 1454 if (error != 0) 1455 break; 1456 1457 if (dir) 1458 pcb->flags |= NG_BTSOCKET_HCI_RAW_DIRECTION; 1459 else 1460 pcb->flags &= ~NG_BTSOCKET_HCI_RAW_DIRECTION; 1461 break; 1462 1463 default: 1464 error = EINVAL; 1465 break; 1466 } 1467 break; 1468 1469 default: 1470 error = EINVAL; 1471 break; 1472 } 1473 1474 mtx_unlock(&pcb->pcb_mtx); 1475 1476 return (error); 1477 } /* ng_btsocket_hci_raw_ctloutput */ 1478 1479 /* 1480 * Detach raw HCI socket 1481 */ 1482 1483 void 1484 ng_btsocket_hci_raw_detach(struct socket *so) 1485 { 1486 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1487 1488 KASSERT(pcb != NULL, ("ng_btsocket_hci_raw_detach: pcb == NULL")); 1489 1490 if (ng_btsocket_hci_raw_node == NULL) 1491 return; 1492 1493 mtx_lock(&ng_btsocket_hci_raw_sockets_mtx); 1494 mtx_lock(&pcb->pcb_mtx); 1495 1496 LIST_REMOVE(pcb, next); 1497 1498 mtx_unlock(&pcb->pcb_mtx); 1499 mtx_unlock(&ng_btsocket_hci_raw_sockets_mtx); 1500 1501 mtx_destroy(&pcb->pcb_mtx); 1502 1503 bzero(pcb, sizeof(*pcb)); 1504 free(pcb, M_NETGRAPH_BTSOCKET_HCI_RAW); 1505 1506 so->so_pcb = NULL; 1507 } /* ng_btsocket_hci_raw_detach */ 1508 1509 /* 1510 * Disconnect raw HCI socket 1511 */ 1512 1513 int 1514 ng_btsocket_hci_raw_disconnect(struct socket *so) 1515 { 1516 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1517 1518 if (pcb == NULL) 1519 return (EINVAL); 1520 if (ng_btsocket_hci_raw_node == NULL) 1521 return (EINVAL); 1522 1523 mtx_lock(&pcb->pcb_mtx); 1524 soisdisconnected(so); 1525 mtx_unlock(&pcb->pcb_mtx); 1526 1527 return (0); 1528 } /* ng_btsocket_hci_raw_disconnect */ 1529 1530 /* 1531 * Get socket peer's address 1532 */ 1533 1534 int 1535 ng_btsocket_hci_raw_peeraddr(struct socket *so, struct sockaddr **nam) 1536 { 1537 return (ng_btsocket_hci_raw_sockaddr(so, nam)); 1538 } /* ng_btsocket_hci_raw_peeraddr */ 1539 1540 /* 1541 * Send data 1542 */ 1543 1544 int 1545 ng_btsocket_hci_raw_send(struct socket *so, int flags, struct mbuf *m, 1546 struct sockaddr *sa, struct mbuf *control, struct thread *td) 1547 { 1548 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1549 struct mbuf *nam = NULL; 1550 int error = 0; 1551 1552 if (ng_btsocket_hci_raw_node == NULL) { 1553 error = ENETDOWN; 1554 goto drop; 1555 } 1556 if (pcb == NULL) { 1557 error = EINVAL; 1558 goto drop; 1559 } 1560 if (control != NULL) { 1561 error = EINVAL; 1562 goto drop; 1563 } 1564 1565 if (m->m_pkthdr.len < sizeof(ng_hci_cmd_pkt_t) || 1566 m->m_pkthdr.len > sizeof(ng_hci_cmd_pkt_t) + NG_HCI_CMD_PKT_SIZE) { 1567 error = EMSGSIZE; 1568 goto drop; 1569 } 1570 1571 if (m->m_len < sizeof(ng_hci_cmd_pkt_t)) { 1572 if ((m = m_pullup(m, sizeof(ng_hci_cmd_pkt_t))) == NULL) { 1573 error = ENOBUFS; 1574 goto drop; 1575 } 1576 } 1577 if (*mtod(m, u_int8_t *) != NG_HCI_CMD_PKT) { 1578 error = ENOTSUP; 1579 goto drop; 1580 } 1581 1582 mtx_lock(&pcb->pcb_mtx); 1583 1584 error = ng_btsocket_hci_raw_filter(pcb, m, 0); 1585 if (error != 0) { 1586 mtx_unlock(&pcb->pcb_mtx); 1587 goto drop; 1588 } 1589 1590 if (sa == NULL) { 1591 if (pcb->addr.hci_node[0] == 0) { 1592 mtx_unlock(&pcb->pcb_mtx); 1593 error = EDESTADDRREQ; 1594 goto drop; 1595 } 1596 1597 sa = (struct sockaddr *) &pcb->addr; 1598 } 1599 1600 MGET(nam, M_NOWAIT, MT_SONAME); 1601 if (nam == NULL) { 1602 mtx_unlock(&pcb->pcb_mtx); 1603 error = ENOBUFS; 1604 goto drop; 1605 } 1606 1607 nam->m_len = sizeof(struct sockaddr_hci); 1608 bcopy(sa,mtod(nam, struct sockaddr_hci *),sizeof(struct sockaddr_hci)); 1609 1610 nam->m_next = m; 1611 m = NULL; 1612 1613 mtx_unlock(&pcb->pcb_mtx); 1614 1615 return (ng_send_fn(ng_btsocket_hci_raw_node, NULL, 1616 ng_btsocket_hci_raw_output, nam, 0)); 1617 drop: 1618 NG_FREE_M(control); /* NG_FREE_M checks for != NULL */ 1619 NG_FREE_M(nam); 1620 NG_FREE_M(m); 1621 1622 return (error); 1623 } /* ng_btsocket_hci_raw_send */ 1624 1625 /* 1626 * Get socket address 1627 */ 1628 1629 int 1630 ng_btsocket_hci_raw_sockaddr(struct socket *so, struct sockaddr **nam) 1631 { 1632 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1633 struct sockaddr_hci sa; 1634 1635 if (pcb == NULL) 1636 return (EINVAL); 1637 if (ng_btsocket_hci_raw_node == NULL) 1638 return (EINVAL); 1639 1640 bzero(&sa, sizeof(sa)); 1641 sa.hci_len = sizeof(sa); 1642 sa.hci_family = AF_BLUETOOTH; 1643 1644 mtx_lock(&pcb->pcb_mtx); 1645 strlcpy(sa.hci_node, pcb->addr.hci_node, sizeof(sa.hci_node)); 1646 mtx_unlock(&pcb->pcb_mtx); 1647 1648 *nam = sodupsockaddr((struct sockaddr *) &sa, M_NOWAIT); 1649 1650 return ((*nam == NULL)? ENOMEM : 0); 1651 } /* ng_btsocket_hci_raw_sockaddr */ 1652 1653