ng_btsocket_hci_raw.c revision 158672
1/* 2 * ng_btsocket_hci_raw.c 3 */ 4 5/*- 6 * Copyright (c) 2001-2002 Maksim Yevmenkin <m_evmenkin@yahoo.com> 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * $Id: ng_btsocket_hci_raw.c,v 1.14 2003/09/14 23:29:06 max Exp $ 31 * $FreeBSD: head/sys/netgraph/bluetooth/socket/ng_btsocket_hci_raw.c 158672 2006-05-17 00:13:07Z emax $ 32 */ 33 34#include <sys/param.h> 35#include <sys/systm.h> 36#include <sys/bitstring.h> 37#include <sys/domain.h> 38#include <sys/endian.h> 39#include <sys/errno.h> 40#include <sys/filedesc.h> 41#include <sys/ioccom.h> 42#include <sys/kernel.h> 43#include <sys/lock.h> 44#include <sys/malloc.h> 45#include <sys/mbuf.h> 46#include <sys/mutex.h> 47#include <sys/protosw.h> 48#include <sys/queue.h> 49#include <sys/socket.h> 50#include <sys/socketvar.h> 51#include <sys/sysctl.h> 52#include <sys/taskqueue.h> 53#include <netgraph/ng_message.h> 54#include <netgraph/netgraph.h> 55#include <netgraph/bluetooth/include/ng_bluetooth.h> 56#include <netgraph/bluetooth/include/ng_hci.h> 57#include <netgraph/bluetooth/include/ng_l2cap.h> 58#include <netgraph/bluetooth/include/ng_btsocket.h> 59#include <netgraph/bluetooth/include/ng_btsocket_hci_raw.h> 60 61/* MALLOC define */ 62#ifdef NG_SEPARATE_MALLOC 63MALLOC_DEFINE(M_NETGRAPH_BTSOCKET_HCI_RAW, "netgraph_btsocks_hci_raw", 64 "Netgraph Bluetooth raw HCI sockets"); 65#else 66#define M_NETGRAPH_BTSOCKET_HCI_RAW M_NETGRAPH 67#endif /* NG_SEPARATE_MALLOC */ 68 69/* Netgraph node methods */ 70static ng_constructor_t ng_btsocket_hci_raw_node_constructor; 71static ng_rcvmsg_t ng_btsocket_hci_raw_node_rcvmsg; 72static ng_shutdown_t ng_btsocket_hci_raw_node_shutdown; 73static ng_newhook_t ng_btsocket_hci_raw_node_newhook; 74static ng_connect_t ng_btsocket_hci_raw_node_connect; 75static ng_rcvdata_t ng_btsocket_hci_raw_node_rcvdata; 76static ng_disconnect_t ng_btsocket_hci_raw_node_disconnect; 77 78static void ng_btsocket_hci_raw_input (void *, int); 79static void ng_btsocket_hci_raw_output(node_p, hook_p, void *, int); 80static void ng_btsocket_hci_raw_savctl(ng_btsocket_hci_raw_pcb_p, 81 struct mbuf **, 82 struct mbuf *); 83static int ng_btsocket_hci_raw_filter(ng_btsocket_hci_raw_pcb_p, 84 struct mbuf *, int); 85 86#define ng_btsocket_hci_raw_wakeup_input_task() \ 87 taskqueue_enqueue(taskqueue_swi, &ng_btsocket_hci_raw_task) 88 89/* Security filter */ 90struct ng_btsocket_hci_raw_sec_filter { 91 bitstr_t bit_decl(events, 0xff); 92 bitstr_t bit_decl(commands[0x3f], 0x3ff); 93}; 94 95/* Netgraph type descriptor */ 96static struct ng_type typestruct = { 97 .version = NG_ABI_VERSION, 98 .name = NG_BTSOCKET_HCI_RAW_NODE_TYPE, 99 .constructor = ng_btsocket_hci_raw_node_constructor, 100 .rcvmsg = ng_btsocket_hci_raw_node_rcvmsg, 101 .shutdown = ng_btsocket_hci_raw_node_shutdown, 102 .newhook = ng_btsocket_hci_raw_node_newhook, 103 .connect = ng_btsocket_hci_raw_node_connect, 104 .rcvdata = ng_btsocket_hci_raw_node_rcvdata, 105 .disconnect = ng_btsocket_hci_raw_node_disconnect, 106}; 107 108/* Globals */ 109extern int ifqmaxlen; 110static u_int32_t ng_btsocket_hci_raw_debug_level; 111static u_int32_t ng_btsocket_hci_raw_ioctl_timeout; 112static node_p ng_btsocket_hci_raw_node; 113static struct ng_bt_itemq ng_btsocket_hci_raw_queue; 114static struct mtx ng_btsocket_hci_raw_queue_mtx; 115static struct task ng_btsocket_hci_raw_task; 116static LIST_HEAD(, ng_btsocket_hci_raw_pcb) ng_btsocket_hci_raw_sockets; 117static struct mtx ng_btsocket_hci_raw_sockets_mtx; 118static u_int32_t ng_btsocket_hci_raw_token; 119static struct mtx ng_btsocket_hci_raw_token_mtx; 120static struct ng_btsocket_hci_raw_sec_filter *ng_btsocket_hci_raw_sec_filter; 121 122/* Sysctl tree */ 123SYSCTL_DECL(_net_bluetooth_hci_sockets); 124SYSCTL_NODE(_net_bluetooth_hci_sockets, OID_AUTO, raw, CTLFLAG_RW, 125 0, "Bluetooth raw HCI sockets family"); 126SYSCTL_INT(_net_bluetooth_hci_sockets_raw, OID_AUTO, debug_level, CTLFLAG_RW, 127 &ng_btsocket_hci_raw_debug_level, NG_BTSOCKET_WARN_LEVEL, 128 "Bluetooth raw HCI sockets debug level"); 129SYSCTL_INT(_net_bluetooth_hci_sockets_raw, OID_AUTO, ioctl_timeout, CTLFLAG_RW, 130 &ng_btsocket_hci_raw_ioctl_timeout, 5, 131 "Bluetooth raw HCI sockets ioctl timeout"); 132SYSCTL_INT(_net_bluetooth_hci_sockets_raw, OID_AUTO, queue_len, CTLFLAG_RD, 133 &ng_btsocket_hci_raw_queue.len, 0, 134 "Bluetooth raw HCI sockets input queue length"); 135SYSCTL_INT(_net_bluetooth_hci_sockets_raw, OID_AUTO, queue_maxlen, CTLFLAG_RD, 136 &ng_btsocket_hci_raw_queue.maxlen, 0, 137 "Bluetooth raw HCI sockets input queue max. length"); 138SYSCTL_INT(_net_bluetooth_hci_sockets_raw, OID_AUTO, queue_drops, CTLFLAG_RD, 139 &ng_btsocket_hci_raw_queue.drops, 0, 140 "Bluetooth raw HCI sockets input queue drops"); 141 142/* Debug */ 143#define NG_BTSOCKET_HCI_RAW_INFO \ 144 if (ng_btsocket_hci_raw_debug_level >= NG_BTSOCKET_INFO_LEVEL) \ 145 printf 146 147#define NG_BTSOCKET_HCI_RAW_WARN \ 148 if (ng_btsocket_hci_raw_debug_level >= NG_BTSOCKET_WARN_LEVEL) \ 149 printf 150 151#define NG_BTSOCKET_HCI_RAW_ERR \ 152 if (ng_btsocket_hci_raw_debug_level >= NG_BTSOCKET_ERR_LEVEL) \ 153 printf 154 155#define NG_BTSOCKET_HCI_RAW_ALERT \ 156 if (ng_btsocket_hci_raw_debug_level >= NG_BTSOCKET_ALERT_LEVEL) \ 157 printf 158 159/**************************************************************************** 160 **************************************************************************** 161 ** Netgraph specific 162 **************************************************************************** 163 ****************************************************************************/ 164 165/* 166 * Netgraph node constructor. Do not allow to create node of this type. 167 */ 168 169static int 170ng_btsocket_hci_raw_node_constructor(node_p node) 171{ 172 return (EINVAL); 173} /* ng_btsocket_hci_raw_node_constructor */ 174 175/* 176 * Netgraph node destructor. Just let old node go and create new fresh one. 177 */ 178 179static int 180ng_btsocket_hci_raw_node_shutdown(node_p node) 181{ 182 int error = 0; 183 184 NG_NODE_UNREF(node); 185 186 error = ng_make_node_common(&typestruct, &ng_btsocket_hci_raw_node); 187 if (error != 0) { 188 NG_BTSOCKET_HCI_RAW_ALERT( 189"%s: Could not create Netgraph node, error=%d\n", __func__, error); 190 191 ng_btsocket_hci_raw_node = NULL; 192 193 return (ENOMEM); 194 } 195 196 error = ng_name_node(ng_btsocket_hci_raw_node, 197 NG_BTSOCKET_HCI_RAW_NODE_TYPE); 198 if (error != 0) { 199 NG_BTSOCKET_HCI_RAW_ALERT( 200"%s: Could not name Netgraph node, error=%d\n", __func__, error); 201 202 NG_NODE_UNREF(ng_btsocket_hci_raw_node); 203 ng_btsocket_hci_raw_node = NULL; 204 205 return (EINVAL); 206 } 207 208 return (0); 209} /* ng_btsocket_hci_raw_node_shutdown */ 210 211/* 212 * Create new hook. Just say "yes" 213 */ 214 215static int 216ng_btsocket_hci_raw_node_newhook(node_p node, hook_p hook, char const *name) 217{ 218 return (0); 219} /* ng_btsocket_hci_raw_node_newhook */ 220 221/* 222 * Connect hook. Just say "yes" 223 */ 224 225static int 226ng_btsocket_hci_raw_node_connect(hook_p hook) 227{ 228 return (0); 229} /* ng_btsocket_hci_raw_node_connect */ 230 231/* 232 * Disconnect hook 233 */ 234 235static int 236ng_btsocket_hci_raw_node_disconnect(hook_p hook) 237{ 238 return (0); 239} /* ng_btsocket_hci_raw_node_disconnect */ 240 241/* 242 * Receive control message. 243 * Make sure it is a message from HCI node and it is a response. 244 * Enqueue item and schedule input task. 245 */ 246 247static int 248ng_btsocket_hci_raw_node_rcvmsg(node_p node, item_p item, hook_p lasthook) 249{ 250 struct ng_mesg *msg = NGI_MSG(item); /* item still has message */ 251 int error = 0; 252 253 /* 254 * Check for empty sockets list creates LOR when both sender and 255 * receiver device are connected to the same host, so remove it 256 * for now 257 */ 258 259 if (msg != NULL && 260 (msg->header.typecookie == NGM_HCI_COOKIE || 261 msg->header.typecookie == NGM_GENERIC_COOKIE) && 262 msg->header.flags & NGF_RESP) { 263 if (msg->header.token == 0) { 264 NG_FREE_ITEM(item); 265 return (0); 266 } 267 268 mtx_lock(&ng_btsocket_hci_raw_queue_mtx); 269 if (NG_BT_ITEMQ_FULL(&ng_btsocket_hci_raw_queue)) { 270 NG_BTSOCKET_HCI_RAW_ERR( 271"%s: Input queue is full\n", __func__); 272 273 NG_BT_ITEMQ_DROP(&ng_btsocket_hci_raw_queue); 274 NG_FREE_ITEM(item); 275 error = ENOBUFS; 276 } else { 277 NG_BT_ITEMQ_ENQUEUE(&ng_btsocket_hci_raw_queue, item); 278 error = ng_btsocket_hci_raw_wakeup_input_task(); 279 } 280 mtx_unlock(&ng_btsocket_hci_raw_queue_mtx); 281 } else { 282 NG_FREE_ITEM(item); 283 error = EINVAL; 284 } 285 286 return (error); 287} /* ng_btsocket_hci_raw_node_rcvmsg */ 288 289/* 290 * Receive packet from the one of our hook. 291 * Prepend every packet with sockaddr_hci and record sender's node name. 292 * Enqueue item and schedule input task. 293 */ 294 295static int 296ng_btsocket_hci_raw_node_rcvdata(hook_p hook, item_p item) 297{ 298 struct mbuf *nam = NULL; 299 int error; 300 301 /* 302 * Check for empty sockets list creates LOR when both sender and 303 * receiver device are connected to the same host, so remove it 304 * for now 305 */ 306 307 MGET(nam, M_DONTWAIT, MT_SONAME); 308 if (nam != NULL) { 309 struct sockaddr_hci *sa = mtod(nam, struct sockaddr_hci *); 310 311 nam->m_len = sizeof(struct sockaddr_hci); 312 313 sa->hci_len = sizeof(*sa); 314 sa->hci_family = AF_BLUETOOTH; 315 strlcpy(sa->hci_node, NG_PEER_NODE_NAME(hook), 316 sizeof(sa->hci_node)); 317 318 NGI_GET_M(item, nam->m_next); 319 NGI_M(item) = nam; 320 321 mtx_lock(&ng_btsocket_hci_raw_queue_mtx); 322 if (NG_BT_ITEMQ_FULL(&ng_btsocket_hci_raw_queue)) { 323 NG_BTSOCKET_HCI_RAW_ERR( 324"%s: Input queue is full\n", __func__); 325 326 NG_BT_ITEMQ_DROP(&ng_btsocket_hci_raw_queue); 327 NG_FREE_ITEM(item); 328 error = ENOBUFS; 329 } else { 330 NG_BT_ITEMQ_ENQUEUE(&ng_btsocket_hci_raw_queue, item); 331 error = ng_btsocket_hci_raw_wakeup_input_task(); 332 } 333 mtx_unlock(&ng_btsocket_hci_raw_queue_mtx); 334 } else { 335 NG_BTSOCKET_HCI_RAW_ERR( 336"%s: Failed to allocate address mbuf\n", __func__); 337 338 NG_FREE_ITEM(item); 339 error = ENOBUFS; 340 } 341 342 return (error); 343} /* ng_btsocket_hci_raw_node_rcvdata */ 344 345/**************************************************************************** 346 **************************************************************************** 347 ** Sockets specific 348 **************************************************************************** 349 ****************************************************************************/ 350 351/* 352 * Get next token. We need token to avoid theoretical race where process 353 * submits ioctl() message then interrupts ioctl() and re-submits another 354 * ioctl() on the same socket *before* first ioctl() complete. 355 */ 356 357static void 358ng_btsocket_hci_raw_get_token(u_int32_t *token) 359{ 360 mtx_lock(&ng_btsocket_hci_raw_token_mtx); 361 362 if (++ ng_btsocket_hci_raw_token == 0) 363 ng_btsocket_hci_raw_token = 1; 364 365 *token = ng_btsocket_hci_raw_token; 366 367 mtx_unlock(&ng_btsocket_hci_raw_token_mtx); 368} /* ng_btsocket_hci_raw_get_token */ 369 370/* 371 * Send Netgraph message to the node - do not expect reply 372 */ 373 374static int 375ng_btsocket_hci_raw_send_ngmsg(char *path, int cmd, void *arg, int arglen) 376{ 377 struct ng_mesg *msg = NULL; 378 int error = 0; 379 380 NG_MKMESSAGE(msg, NGM_HCI_COOKIE, cmd, arglen, M_NOWAIT); 381 if (msg == NULL) 382 return (ENOMEM); 383 384 if (arg != NULL && arglen > 0) 385 bcopy(arg, msg->data, arglen); 386 387 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, path, 0); 388 389 return (error); 390} /* ng_btsocket_hci_raw_send_ngmsg */ 391 392/* 393 * Send Netgraph message to the node (no data) and wait for reply 394 */ 395 396static int 397ng_btsocket_hci_raw_send_sync_ngmsg(ng_btsocket_hci_raw_pcb_p pcb, char *path, 398 int cmd, void *rsp, int rsplen) 399{ 400 struct ng_mesg *msg = NULL; 401 int error = 0; 402 403 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 404 405 NG_MKMESSAGE(msg, NGM_HCI_COOKIE, cmd, 0, M_NOWAIT); 406 if (msg == NULL) 407 return (ENOMEM); 408 409 ng_btsocket_hci_raw_get_token(&msg->header.token); 410 pcb->token = msg->header.token; 411 pcb->msg = NULL; 412 413 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, path, 0); 414 if (error != 0) { 415 pcb->token = 0; 416 return (error); 417 } 418 419 error = msleep(&pcb->msg, &pcb->pcb_mtx, PZERO|PCATCH, "hcictl", 420 ng_btsocket_hci_raw_ioctl_timeout * hz); 421 pcb->token = 0; 422 423 if (error != 0) 424 return (error); 425 426 if (pcb->msg != NULL && pcb->msg->header.cmd == cmd) 427 bcopy(pcb->msg->data, rsp, rsplen); 428 else 429 error = EINVAL; 430 431 NG_FREE_MSG(pcb->msg); /* checks for != NULL */ 432 433 return (0); 434} /* ng_btsocket_hci_raw_send_sync_ngmsg */ 435 436/* 437 * Create control information for the packet 438 */ 439 440static void 441ng_btsocket_hci_raw_savctl(ng_btsocket_hci_raw_pcb_p pcb, struct mbuf **ctl, 442 struct mbuf *m) 443{ 444 int dir; 445 struct timeval tv; 446 447 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 448 449 if (pcb->flags & NG_BTSOCKET_HCI_RAW_DIRECTION) { 450 dir = (m->m_flags & M_PROTO1)? 1 : 0; 451 *ctl = sbcreatecontrol((caddr_t) &dir, sizeof(dir), 452 SCM_HCI_RAW_DIRECTION, SOL_HCI_RAW); 453 if (*ctl != NULL) 454 ctl = &((*ctl)->m_next); 455 } 456 457 if (pcb->so->so_options & SO_TIMESTAMP) { 458 microtime(&tv); 459 *ctl = sbcreatecontrol((caddr_t) &tv, sizeof(tv), 460 SCM_TIMESTAMP, SOL_SOCKET); 461 if (*ctl != NULL) 462 ctl = &((*ctl)->m_next); 463 } 464} /* ng_btsocket_hci_raw_savctl */ 465 466/* 467 * Raw HCI sockets data input routine 468 */ 469 470static void 471ng_btsocket_hci_raw_data_input(struct mbuf *nam) 472{ 473 ng_btsocket_hci_raw_pcb_p pcb = NULL; 474 struct mbuf *m0 = NULL, *m = NULL; 475 struct sockaddr_hci *sa = NULL; 476 477 m0 = nam->m_next; 478 nam->m_next = NULL; 479 480 KASSERT((nam->m_type == MT_SONAME), 481 ("%s: m_type=%d\n", __func__, nam->m_type)); 482 KASSERT((m0->m_flags & M_PKTHDR), 483 ("%s: m_flags=%#x\n", __func__, m0->m_flags)); 484 485 sa = mtod(nam, struct sockaddr_hci *); 486 487 mtx_lock(&ng_btsocket_hci_raw_sockets_mtx); 488 489 LIST_FOREACH(pcb, &ng_btsocket_hci_raw_sockets, next) { 490 491 mtx_lock(&pcb->pcb_mtx); 492 493 /* 494 * If socket was bound then check address and 495 * make sure it matches. 496 */ 497 498 if (pcb->addr.hci_node[0] != 0 && 499 strcmp(sa->hci_node, pcb->addr.hci_node) != 0) 500 goto next; 501 502 /* 503 * Check packet against filters 504 * XXX do we have to call m_pullup() here? 505 */ 506 507 if (ng_btsocket_hci_raw_filter(pcb, m0, 1) != 0) 508 goto next; 509 510 /* 511 * Make a copy of the packet, append to the socket's 512 * receive queue and wakeup socket. sbappendaddr() 513 * will check if socket has enough buffer space. 514 */ 515 516 m = m_dup(m0, M_DONTWAIT); 517 if (m != NULL) { 518 struct mbuf *ctl = NULL; 519 520 ng_btsocket_hci_raw_savctl(pcb, &ctl, m); 521 522 if (sbappendaddr(&pcb->so->so_rcv, 523 (struct sockaddr *) sa, m, ctl)) 524 sorwakeup(pcb->so); 525 else { 526 NG_BTSOCKET_HCI_RAW_INFO( 527"%s: sbappendaddr() failed\n", __func__); 528 529 NG_FREE_M(m); 530 NG_FREE_M(ctl); 531 } 532 } 533next: 534 mtx_unlock(&pcb->pcb_mtx); 535 } 536 537 mtx_unlock(&ng_btsocket_hci_raw_sockets_mtx); 538 539 NG_FREE_M(nam); 540 NG_FREE_M(m0); 541} /* ng_btsocket_hci_raw_data_input */ 542 543/* 544 * Raw HCI sockets message input routine 545 */ 546 547static void 548ng_btsocket_hci_raw_msg_input(struct ng_mesg *msg) 549{ 550 ng_btsocket_hci_raw_pcb_p pcb = NULL; 551 552 mtx_lock(&ng_btsocket_hci_raw_sockets_mtx); 553 554 LIST_FOREACH(pcb, &ng_btsocket_hci_raw_sockets, next) { 555 mtx_lock(&pcb->pcb_mtx); 556 557 if (msg->header.token == pcb->token) { 558 pcb->msg = msg; 559 wakeup(&pcb->msg); 560 561 mtx_unlock(&pcb->pcb_mtx); 562 mtx_unlock(&ng_btsocket_hci_raw_sockets_mtx); 563 564 return; 565 } 566 567 mtx_unlock(&pcb->pcb_mtx); 568 } 569 570 mtx_unlock(&ng_btsocket_hci_raw_sockets_mtx); 571 572 NG_FREE_MSG(msg); /* checks for != NULL */ 573} /* ng_btsocket_hci_raw_msg_input */ 574 575/* 576 * Raw HCI sockets input routines 577 */ 578 579static void 580ng_btsocket_hci_raw_input(void *context, int pending) 581{ 582 item_p item = NULL; 583 584 for (;;) { 585 mtx_lock(&ng_btsocket_hci_raw_queue_mtx); 586 NG_BT_ITEMQ_DEQUEUE(&ng_btsocket_hci_raw_queue, item); 587 mtx_unlock(&ng_btsocket_hci_raw_queue_mtx); 588 589 if (item == NULL) 590 break; 591 592 switch(item->el_flags & NGQF_TYPE) { 593 case NGQF_DATA: { 594 struct mbuf *m = NULL; 595 596 NGI_GET_M(item, m); 597 ng_btsocket_hci_raw_data_input(m); 598 } break; 599 600 case NGQF_MESG: { 601 struct ng_mesg *msg = NULL; 602 603 NGI_GET_MSG(item, msg); 604 ng_btsocket_hci_raw_msg_input(msg); 605 } break; 606 607 default: 608 KASSERT(0, 609("%s: invalid item type=%ld\n", __func__, (item->el_flags & NGQF_TYPE))); 610 break; 611 } 612 613 NG_FREE_ITEM(item); 614 } 615} /* ng_btsocket_hci_raw_input */ 616 617/* 618 * Raw HCI sockets output routine 619 */ 620 621static void 622ng_btsocket_hci_raw_output(node_p node, hook_p hook, void *arg1, int arg2) 623{ 624 struct mbuf *nam = (struct mbuf *) arg1, *m = NULL; 625 struct sockaddr_hci *sa = NULL; 626 int error; 627 628 m = nam->m_next; 629 nam->m_next = NULL; 630 631 KASSERT((nam->m_type == MT_SONAME), 632 ("%s: m_type=%d\n", __func__, nam->m_type)); 633 KASSERT((m->m_flags & M_PKTHDR), 634 ("%s: m_flags=%#x\n", __func__, m->m_flags)); 635 636 sa = mtod(nam, struct sockaddr_hci *); 637 638 /* 639 * Find downstream hook 640 * XXX For now access node hook list directly. Should be safe because 641 * we used ng_send_fn() and we should have exclusive lock on the node. 642 */ 643 644 LIST_FOREACH(hook, &node->nd_hooks, hk_hooks) { 645 if (hook == NULL || NG_HOOK_NOT_VALID(hook) || 646 NG_NODE_NOT_VALID(NG_PEER_NODE(hook))) 647 continue; 648 649 if (strcmp(sa->hci_node, NG_PEER_NODE_NAME(hook)) == 0) { 650 NG_SEND_DATA_ONLY(error, hook, m); /* sets m to NULL */ 651 break; 652 } 653 } 654 655 NG_FREE_M(nam); /* check for != NULL */ 656 NG_FREE_M(m); 657} /* ng_btsocket_hci_raw_output */ 658 659/* 660 * Check frame against security and socket filters. 661 * d (direction bit) == 1 means incoming frame. 662 */ 663 664static int 665ng_btsocket_hci_raw_filter(ng_btsocket_hci_raw_pcb_p pcb, struct mbuf *m, int d) 666{ 667 int type, event, opcode; 668 669 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 670 671 switch ((type = *mtod(m, u_int8_t *))) { 672 case NG_HCI_CMD_PKT: 673 if (!(pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED)) { 674 opcode = le16toh(mtod(m, ng_hci_cmd_pkt_t *)->opcode); 675 676 if (!bit_test( 677ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF(opcode) - 1], 678NG_HCI_OCF(opcode) - 1)) 679 return (EPERM); 680 } 681 682 if (d && !bit_test(pcb->filter.packet_mask, NG_HCI_CMD_PKT - 1)) 683 return (EPERM); 684 break; 685 686 case NG_HCI_ACL_DATA_PKT: 687 case NG_HCI_SCO_DATA_PKT: 688 if (!(pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) || 689 !bit_test(pcb->filter.packet_mask, type - 1) || 690 !d) 691 return (EPERM); 692 break; 693 694 case NG_HCI_EVENT_PKT: 695 if (!d) 696 return (EINVAL); 697 698 event = mtod(m, ng_hci_event_pkt_t *)->event - 1; 699 700 if (!(pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED)) 701 if (!bit_test(ng_btsocket_hci_raw_sec_filter->events, event)) 702 return (EPERM); 703 704 if (!bit_test(pcb->filter.event_mask, event)) 705 return (EPERM); 706 break; 707 708 default: 709 return (EINVAL); 710 } 711 712 return (0); 713} /* ng_btsocket_hci_raw_filter */ 714 715/* 716 * Initialize everything 717 */ 718 719void 720ng_btsocket_hci_raw_init(void) 721{ 722 bitstr_t *f = NULL; 723 int error = 0; 724 725 ng_btsocket_hci_raw_node = NULL; 726 ng_btsocket_hci_raw_debug_level = NG_BTSOCKET_WARN_LEVEL; 727 ng_btsocket_hci_raw_ioctl_timeout = 5; 728 729 /* Register Netgraph node type */ 730 error = ng_newtype(&typestruct); 731 if (error != 0) { 732 NG_BTSOCKET_HCI_RAW_ALERT( 733"%s: Could not register Netgraph node type, error=%d\n", __func__, error); 734 735 return; 736 } 737 738 /* Create Netgrapg node */ 739 error = ng_make_node_common(&typestruct, &ng_btsocket_hci_raw_node); 740 if (error != 0) { 741 NG_BTSOCKET_HCI_RAW_ALERT( 742"%s: Could not create Netgraph node, error=%d\n", __func__, error); 743 744 ng_btsocket_hci_raw_node = NULL; 745 746 return; 747 } 748 749 error = ng_name_node(ng_btsocket_hci_raw_node, 750 NG_BTSOCKET_HCI_RAW_NODE_TYPE); 751 if (error != 0) { 752 NG_BTSOCKET_HCI_RAW_ALERT( 753"%s: Could not name Netgraph node, error=%d\n", __func__, error); 754 755 NG_NODE_UNREF(ng_btsocket_hci_raw_node); 756 ng_btsocket_hci_raw_node = NULL; 757 758 return; 759 } 760 761 /* Create input queue */ 762 NG_BT_ITEMQ_INIT(&ng_btsocket_hci_raw_queue, ifqmaxlen); 763 mtx_init(&ng_btsocket_hci_raw_queue_mtx, 764 "btsocks_hci_raw_queue_mtx", NULL, MTX_DEF); 765 TASK_INIT(&ng_btsocket_hci_raw_task, 0, 766 ng_btsocket_hci_raw_input, NULL); 767 768 /* Create list of sockets */ 769 LIST_INIT(&ng_btsocket_hci_raw_sockets); 770 mtx_init(&ng_btsocket_hci_raw_sockets_mtx, 771 "btsocks_hci_raw_sockets_mtx", NULL, MTX_DEF); 772 773 /* Tokens */ 774 ng_btsocket_hci_raw_token = 0; 775 mtx_init(&ng_btsocket_hci_raw_token_mtx, 776 "btsocks_hci_raw_token_mtx", NULL, MTX_DEF); 777 778 /* 779 * Security filter 780 * XXX never FREE()ed 781 */ 782 783 ng_btsocket_hci_raw_sec_filter = NULL; 784 785 MALLOC(ng_btsocket_hci_raw_sec_filter, 786 struct ng_btsocket_hci_raw_sec_filter *, 787 sizeof(struct ng_btsocket_hci_raw_sec_filter), 788 M_NETGRAPH_BTSOCKET_HCI_RAW, M_NOWAIT|M_ZERO); 789 if (ng_btsocket_hci_raw_sec_filter == NULL) { 790 printf("%s: Could not allocate security filter!\n", __func__); 791 return; 792 } 793 794 /* 795 * XXX How paranoid can we get? 796 * 797 * Initialize security filter. If bit is set in the mask then 798 * unprivileged socket is allowed to send (receive) this command 799 * (event). 800 */ 801 802 /* Enable all events */ 803 memset(&ng_btsocket_hci_raw_sec_filter->events, 0xff, 804 sizeof(ng_btsocket_hci_raw_sec_filter->events)/ 805 sizeof(ng_btsocket_hci_raw_sec_filter->events[0])); 806 807 /* Disable some critical events */ 808 f = ng_btsocket_hci_raw_sec_filter->events; 809 bit_clear(f, NG_HCI_EVENT_RETURN_LINK_KEYS - 1); 810 bit_clear(f, NG_HCI_EVENT_LINK_KEY_NOTIFICATION - 1); 811 bit_clear(f, NG_HCI_EVENT_VENDOR - 1); 812 813 /* Commands - Link control */ 814 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_LINK_CONTROL-1]; 815 bit_set(f, NG_HCI_OCF_INQUIRY - 1); 816 bit_set(f, NG_HCI_OCF_INQUIRY_CANCEL - 1); 817 bit_set(f, NG_HCI_OCF_PERIODIC_INQUIRY - 1); 818 bit_set(f, NG_HCI_OCF_EXIT_PERIODIC_INQUIRY - 1); 819 bit_set(f, NG_HCI_OCF_REMOTE_NAME_REQ - 1); 820 bit_set(f, NG_HCI_OCF_READ_REMOTE_FEATURES - 1); 821 bit_set(f, NG_HCI_OCF_READ_REMOTE_VER_INFO - 1); 822 bit_set(f, NG_HCI_OCF_READ_CLOCK_OFFSET - 1); 823 824 /* Commands - Link policy */ 825 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_LINK_POLICY-1]; 826 bit_set(f, NG_HCI_OCF_ROLE_DISCOVERY - 1); 827 bit_set(f, NG_HCI_OCF_READ_LINK_POLICY_SETTINGS - 1); 828 829 /* Commands - Host controller and baseband */ 830 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_HC_BASEBAND-1]; 831 bit_set(f, NG_HCI_OCF_READ_PIN_TYPE - 1); 832 bit_set(f, NG_HCI_OCF_READ_LOCAL_NAME - 1); 833 bit_set(f, NG_HCI_OCF_READ_CON_ACCEPT_TIMO - 1); 834 bit_set(f, NG_HCI_OCF_READ_PAGE_TIMO - 1); 835 bit_set(f, NG_HCI_OCF_READ_SCAN_ENABLE - 1); 836 bit_set(f, NG_HCI_OCF_READ_PAGE_SCAN_ACTIVITY - 1); 837 bit_set(f, NG_HCI_OCF_READ_INQUIRY_SCAN_ACTIVITY - 1); 838 bit_set(f, NG_HCI_OCF_READ_AUTH_ENABLE - 1); 839 bit_set(f, NG_HCI_OCF_READ_ENCRYPTION_MODE - 1); 840 bit_set(f, NG_HCI_OCF_READ_UNIT_CLASS - 1); 841 bit_set(f, NG_HCI_OCF_READ_VOICE_SETTINGS - 1); 842 bit_set(f, NG_HCI_OCF_READ_AUTO_FLUSH_TIMO - 1); 843 bit_set(f, NG_HCI_OCF_READ_NUM_BROADCAST_RETRANS - 1); 844 bit_set(f, NG_HCI_OCF_READ_HOLD_MODE_ACTIVITY - 1); 845 bit_set(f, NG_HCI_OCF_READ_XMIT_LEVEL - 1); 846 bit_set(f, NG_HCI_OCF_READ_SCO_FLOW_CONTROL - 1); 847 bit_set(f, NG_HCI_OCF_READ_LINK_SUPERVISION_TIMO - 1); 848 bit_set(f, NG_HCI_OCF_READ_SUPPORTED_IAC_NUM - 1); 849 bit_set(f, NG_HCI_OCF_READ_IAC_LAP - 1); 850 bit_set(f, NG_HCI_OCF_READ_PAGE_SCAN_PERIOD - 1); 851 bit_set(f, NG_HCI_OCF_READ_PAGE_SCAN - 1); 852 853 /* Commands - Informational */ 854 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_INFO - 1]; 855 bit_set(f, NG_HCI_OCF_READ_LOCAL_VER - 1); 856 bit_set(f, NG_HCI_OCF_READ_LOCAL_FEATURES - 1); 857 bit_set(f, NG_HCI_OCF_READ_BUFFER_SIZE - 1); 858 bit_set(f, NG_HCI_OCF_READ_COUNTRY_CODE - 1); 859 bit_set(f, NG_HCI_OCF_READ_BDADDR - 1); 860 861 /* Commands - Status */ 862 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_STATUS - 1]; 863 bit_set(f, NG_HCI_OCF_READ_FAILED_CONTACT_CNTR - 1); 864 bit_set(f, NG_HCI_OCF_GET_LINK_QUALITY - 1); 865 bit_set(f, NG_HCI_OCF_READ_RSSI - 1); 866 867 /* Commands - Testing */ 868 f = ng_btsocket_hci_raw_sec_filter->commands[NG_HCI_OGF_TESTING - 1]; 869 bit_set(f, NG_HCI_OCF_READ_LOOPBACK_MODE - 1); 870} /* ng_btsocket_hci_raw_init */ 871 872/* 873 * Abort connection on socket 874 */ 875 876void 877ng_btsocket_hci_raw_abort(struct socket *so) 878{ 879 ng_btsocket_hci_raw_detach(so); 880} /* ng_btsocket_hci_raw_abort */ 881 882/* 883 * Create new raw HCI socket 884 */ 885 886int 887ng_btsocket_hci_raw_attach(struct socket *so, int proto, struct thread *td) 888{ 889 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 890 int error = 0; 891 892 if (pcb != NULL) 893 return (EISCONN); 894 895 if (ng_btsocket_hci_raw_node == NULL) 896 return (EPROTONOSUPPORT); 897 if (proto != BLUETOOTH_PROTO_HCI) 898 return (EPROTONOSUPPORT); 899 if (so->so_type != SOCK_RAW) 900 return (ESOCKTNOSUPPORT); 901 902 error = soreserve(so, NG_BTSOCKET_HCI_RAW_SENDSPACE, 903 NG_BTSOCKET_HCI_RAW_RECVSPACE); 904 if (error != 0) 905 return (error); 906 907 MALLOC(pcb, ng_btsocket_hci_raw_pcb_p, sizeof(*pcb), 908 M_NETGRAPH_BTSOCKET_HCI_RAW, M_NOWAIT|M_ZERO); 909 if (pcb == NULL) 910 return (ENOMEM); 911 912 so->so_pcb = (caddr_t) pcb; 913 pcb->so = so; 914 915 if (suser(td) == 0) 916 pcb->flags |= NG_BTSOCKET_HCI_RAW_PRIVILEGED; 917 918 /* 919 * Set default socket filter. By default socket only accepts HCI 920 * Command_Complete and Command_Status event packets. 921 */ 922 923 bit_set(pcb->filter.event_mask, NG_HCI_EVENT_COMMAND_COMPL - 1); 924 bit_set(pcb->filter.event_mask, NG_HCI_EVENT_COMMAND_STATUS - 1); 925 926 mtx_init(&pcb->pcb_mtx, "btsocks_hci_raw_pcb_mtx", NULL, MTX_DEF); 927 928 mtx_lock(&ng_btsocket_hci_raw_sockets_mtx); 929 LIST_INSERT_HEAD(&ng_btsocket_hci_raw_sockets, pcb, next); 930 mtx_unlock(&ng_btsocket_hci_raw_sockets_mtx); 931 932 return (0); 933} /* ng_btsocket_hci_raw_attach */ 934 935/* 936 * Bind raw HCI socket 937 */ 938 939int 940ng_btsocket_hci_raw_bind(struct socket *so, struct sockaddr *nam, 941 struct thread *td) 942{ 943 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 944 struct sockaddr_hci *sa = (struct sockaddr_hci *) nam; 945 946 if (pcb == NULL) 947 return (EINVAL); 948 if (ng_btsocket_hci_raw_node == NULL) 949 return (EINVAL); 950 951 if (sa == NULL) 952 return (EINVAL); 953 if (sa->hci_family != AF_BLUETOOTH) 954 return (EAFNOSUPPORT); 955 if (sa->hci_len != sizeof(*sa)) 956 return (EINVAL); 957 if (sa->hci_node[0] == 0) 958 return (EINVAL); 959 960 mtx_lock(&pcb->pcb_mtx); 961 bcopy(sa, &pcb->addr, sizeof(pcb->addr)); 962 mtx_unlock(&pcb->pcb_mtx); 963 964 return (0); 965} /* ng_btsocket_hci_raw_bind */ 966 967/* 968 * Connect raw HCI socket 969 */ 970 971int 972ng_btsocket_hci_raw_connect(struct socket *so, struct sockaddr *nam, 973 struct thread *td) 974{ 975 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 976 struct sockaddr_hci *sa = (struct sockaddr_hci *) nam; 977 978 if (pcb == NULL) 979 return (EINVAL); 980 if (ng_btsocket_hci_raw_node == NULL) 981 return (EINVAL); 982 983 if (sa == NULL) 984 return (EINVAL); 985 if (sa->hci_family != AF_BLUETOOTH) 986 return (EAFNOSUPPORT); 987 if (sa->hci_len != sizeof(*sa)) 988 return (EINVAL); 989 if (sa->hci_node[0] == 0) 990 return (EDESTADDRREQ); 991 992 mtx_lock(&pcb->pcb_mtx); 993 994 if (bcmp(sa, &pcb->addr, sizeof(pcb->addr)) != 0) { 995 mtx_unlock(&pcb->pcb_mtx); 996 return (EADDRNOTAVAIL); 997 } 998 999 soisconnected(so); 1000 1001 mtx_unlock(&pcb->pcb_mtx); 1002 1003 return (0); 1004} /* ng_btsocket_hci_raw_connect */ 1005 1006/* 1007 * Process ioctl on socket 1008 */ 1009 1010int 1011ng_btsocket_hci_raw_control(struct socket *so, u_long cmd, caddr_t data, 1012 struct ifnet *ifp, struct thread *td) 1013{ 1014 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1015 char path[NG_NODESIZ + 1]; 1016 struct ng_mesg *msg = NULL; 1017 int error = 0; 1018 1019 if (pcb == NULL) 1020 return (EINVAL); 1021 if (ng_btsocket_hci_raw_node == NULL) 1022 return (EINVAL); 1023 1024 mtx_lock(&pcb->pcb_mtx); 1025 1026 /* Check if we have device name */ 1027 if (pcb->addr.hci_node[0] == 0) { 1028 mtx_unlock(&pcb->pcb_mtx); 1029 return (EHOSTUNREACH); 1030 } 1031 1032 /* Check if we have pending ioctl() */ 1033 if (pcb->token != 0) { 1034 mtx_unlock(&pcb->pcb_mtx); 1035 return (EBUSY); 1036 } 1037 1038 snprintf(path, sizeof(path), "%s:", pcb->addr.hci_node); 1039 1040 switch (cmd) { 1041 case SIOC_HCI_RAW_NODE_GET_STATE: { 1042 struct ng_btsocket_hci_raw_node_state *p = 1043 (struct ng_btsocket_hci_raw_node_state *) data; 1044 1045 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1046 NGM_HCI_NODE_GET_STATE, 1047 &p->state, sizeof(p->state)); 1048 } break; 1049 1050 case SIOC_HCI_RAW_NODE_INIT: 1051 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1052 error = ng_btsocket_hci_raw_send_ngmsg(path, 1053 NGM_HCI_NODE_INIT, NULL, 0); 1054 else 1055 error = EPERM; 1056 break; 1057 1058 case SIOC_HCI_RAW_NODE_GET_DEBUG: { 1059 struct ng_btsocket_hci_raw_node_debug *p = 1060 (struct ng_btsocket_hci_raw_node_debug *) data; 1061 1062 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1063 NGM_HCI_NODE_GET_DEBUG, 1064 &p->debug, sizeof(p->debug)); 1065 } break; 1066 1067 case SIOC_HCI_RAW_NODE_SET_DEBUG: { 1068 struct ng_btsocket_hci_raw_node_debug *p = 1069 (struct ng_btsocket_hci_raw_node_debug *) data; 1070 1071 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1072 error = ng_btsocket_hci_raw_send_ngmsg(path, 1073 NGM_HCI_NODE_SET_DEBUG, &p->debug, 1074 sizeof(p->debug)); 1075 else 1076 error = EPERM; 1077 } break; 1078 1079 case SIOC_HCI_RAW_NODE_GET_BUFFER: { 1080 struct ng_btsocket_hci_raw_node_buffer *p = 1081 (struct ng_btsocket_hci_raw_node_buffer *) data; 1082 1083 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1084 NGM_HCI_NODE_GET_BUFFER, 1085 &p->buffer, sizeof(p->buffer)); 1086 } break; 1087 1088 case SIOC_HCI_RAW_NODE_GET_BDADDR: { 1089 struct ng_btsocket_hci_raw_node_bdaddr *p = 1090 (struct ng_btsocket_hci_raw_node_bdaddr *) data; 1091 1092 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1093 NGM_HCI_NODE_GET_BDADDR, 1094 &p->bdaddr, sizeof(p->bdaddr)); 1095 } break; 1096 1097 case SIOC_HCI_RAW_NODE_GET_FEATURES: { 1098 struct ng_btsocket_hci_raw_node_features *p = 1099 (struct ng_btsocket_hci_raw_node_features *) data; 1100 1101 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1102 NGM_HCI_NODE_GET_FEATURES, 1103 &p->features, sizeof(p->features)); 1104 } break; 1105 1106 case SIOC_HCI_RAW_NODE_GET_STAT: { 1107 struct ng_btsocket_hci_raw_node_stat *p = 1108 (struct ng_btsocket_hci_raw_node_stat *) data; 1109 1110 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1111 NGM_HCI_NODE_GET_STAT, 1112 &p->stat, sizeof(p->stat)); 1113 } break; 1114 1115 case SIOC_HCI_RAW_NODE_RESET_STAT: 1116 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1117 error = ng_btsocket_hci_raw_send_ngmsg(path, 1118 NGM_HCI_NODE_RESET_STAT, NULL, 0); 1119 else 1120 error = EPERM; 1121 break; 1122 1123 case SIOC_HCI_RAW_NODE_FLUSH_NEIGHBOR_CACHE: 1124 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1125 error = ng_btsocket_hci_raw_send_ngmsg(path, 1126 NGM_HCI_NODE_FLUSH_NEIGHBOR_CACHE, 1127 NULL, 0); 1128 else 1129 error = EPERM; 1130 break; 1131 1132 case SIOC_HCI_RAW_NODE_GET_NEIGHBOR_CACHE: { 1133 struct ng_btsocket_hci_raw_node_neighbor_cache *p = 1134 (struct ng_btsocket_hci_raw_node_neighbor_cache *) data; 1135 ng_hci_node_get_neighbor_cache_ep *p1 = NULL; 1136 ng_hci_node_neighbor_cache_entry_ep *p2 = NULL; 1137 1138 if (p->num_entries <= 0 || 1139 p->num_entries > NG_HCI_MAX_NEIGHBOR_NUM || 1140 p->entries == NULL) { 1141 error = EINVAL; 1142 break; 1143 } 1144 1145 NG_MKMESSAGE(msg, NGM_HCI_COOKIE, 1146 NGM_HCI_NODE_GET_NEIGHBOR_CACHE, 0, M_NOWAIT); 1147 if (msg == NULL) { 1148 error = ENOMEM; 1149 break; 1150 } 1151 ng_btsocket_hci_raw_get_token(&msg->header.token); 1152 pcb->token = msg->header.token; 1153 pcb->msg = NULL; 1154 1155 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, path, 0); 1156 if (error != 0) { 1157 pcb->token = 0; 1158 break; 1159 } 1160 1161 error = msleep(&pcb->msg, &pcb->pcb_mtx, 1162 PZERO|PCATCH, "hcictl", 1163 ng_btsocket_hci_raw_ioctl_timeout * hz); 1164 pcb->token = 0; 1165 1166 if (error != 0) 1167 break; 1168 1169 if (pcb->msg != NULL && 1170 pcb->msg->header.cmd == NGM_HCI_NODE_GET_NEIGHBOR_CACHE) { 1171 /* Return data back to user space */ 1172 p1 = (ng_hci_node_get_neighbor_cache_ep *) 1173 (pcb->msg->data); 1174 p2 = (ng_hci_node_neighbor_cache_entry_ep *) 1175 (p1 + 1); 1176 1177 p->num_entries = min(p->num_entries, p1->num_entries); 1178 if (p->num_entries > 0) 1179 error = copyout((caddr_t) p2, 1180 (caddr_t) p->entries, 1181 p->num_entries * sizeof(*p2)); 1182 } else 1183 error = EINVAL; 1184 1185 NG_FREE_MSG(pcb->msg); /* checks for != NULL */ 1186 }break; 1187 1188 case SIOC_HCI_RAW_NODE_GET_CON_LIST: { 1189 struct ng_btsocket_hci_raw_con_list *p = 1190 (struct ng_btsocket_hci_raw_con_list *) data; 1191 ng_hci_node_con_list_ep *p1 = NULL; 1192 ng_hci_node_con_ep *p2 = NULL; 1193 1194 if (p->num_connections == 0 || 1195 p->num_connections > NG_HCI_MAX_CON_NUM || 1196 p->connections == NULL) { 1197 error = EINVAL; 1198 break; 1199 } 1200 1201 NG_MKMESSAGE(msg, NGM_HCI_COOKIE, NGM_HCI_NODE_GET_CON_LIST, 1202 0, M_NOWAIT); 1203 if (msg == NULL) { 1204 error = ENOMEM; 1205 break; 1206 } 1207 ng_btsocket_hci_raw_get_token(&msg->header.token); 1208 pcb->token = msg->header.token; 1209 pcb->msg = NULL; 1210 1211 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, path, 0); 1212 if (error != 0) { 1213 pcb->token = 0; 1214 break; 1215 } 1216 1217 error = msleep(&pcb->msg, &pcb->pcb_mtx, 1218 PZERO|PCATCH, "hcictl", 1219 ng_btsocket_hci_raw_ioctl_timeout * hz); 1220 pcb->token = 0; 1221 1222 if (error != 0) 1223 break; 1224 1225 if (pcb->msg != NULL && 1226 pcb->msg->header.cmd == NGM_HCI_NODE_GET_CON_LIST) { 1227 /* Return data back to user space */ 1228 p1 = (ng_hci_node_con_list_ep *)(pcb->msg->data); 1229 p2 = (ng_hci_node_con_ep *)(p1 + 1); 1230 1231 p->num_connections = min(p->num_connections, 1232 p1->num_connections); 1233 if (p->num_connections > 0) 1234 error = copyout((caddr_t) p2, 1235 (caddr_t) p->connections, 1236 p->num_connections * sizeof(*p2)); 1237 } else 1238 error = EINVAL; 1239 1240 NG_FREE_MSG(pcb->msg); /* checks for != NULL */ 1241 } break; 1242 1243 case SIOC_HCI_RAW_NODE_GET_LINK_POLICY_MASK: { 1244 struct ng_btsocket_hci_raw_node_link_policy_mask *p = 1245 (struct ng_btsocket_hci_raw_node_link_policy_mask *) 1246 data; 1247 1248 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1249 NGM_HCI_NODE_GET_LINK_POLICY_SETTINGS_MASK, 1250 &p->policy_mask, sizeof(p->policy_mask)); 1251 } break; 1252 1253 case SIOC_HCI_RAW_NODE_SET_LINK_POLICY_MASK: { 1254 struct ng_btsocket_hci_raw_node_link_policy_mask *p = 1255 (struct ng_btsocket_hci_raw_node_link_policy_mask *) 1256 data; 1257 1258 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1259 error = ng_btsocket_hci_raw_send_ngmsg(path, 1260 NGM_HCI_NODE_SET_LINK_POLICY_SETTINGS_MASK, 1261 &p->policy_mask, 1262 sizeof(p->policy_mask)); 1263 else 1264 error = EPERM; 1265 } break; 1266 1267 case SIOC_HCI_RAW_NODE_GET_PACKET_MASK: { 1268 struct ng_btsocket_hci_raw_node_packet_mask *p = 1269 (struct ng_btsocket_hci_raw_node_packet_mask *) data; 1270 1271 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1272 NGM_HCI_NODE_GET_PACKET_MASK, 1273 &p->packet_mask, sizeof(p->packet_mask)); 1274 } break; 1275 1276 case SIOC_HCI_RAW_NODE_SET_PACKET_MASK: { 1277 struct ng_btsocket_hci_raw_node_packet_mask *p = 1278 (struct ng_btsocket_hci_raw_node_packet_mask *) data; 1279 1280 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1281 error = ng_btsocket_hci_raw_send_ngmsg(path, 1282 NGM_HCI_NODE_SET_PACKET_MASK, 1283 &p->packet_mask, 1284 sizeof(p->packet_mask)); 1285 else 1286 error = EPERM; 1287 } break; 1288 1289 case SIOC_HCI_RAW_NODE_GET_ROLE_SWITCH: { 1290 struct ng_btsocket_hci_raw_node_role_switch *p = 1291 (struct ng_btsocket_hci_raw_node_role_switch *) data; 1292 1293 error = ng_btsocket_hci_raw_send_sync_ngmsg(pcb, path, 1294 NGM_HCI_NODE_GET_ROLE_SWITCH, 1295 &p->role_switch, sizeof(p->role_switch)); 1296 } break; 1297 1298 case SIOC_HCI_RAW_NODE_SET_ROLE_SWITCH: { 1299 struct ng_btsocket_hci_raw_node_role_switch *p = 1300 (struct ng_btsocket_hci_raw_node_role_switch *) data; 1301 1302 if (pcb->flags & NG_BTSOCKET_HCI_RAW_PRIVILEGED) 1303 error = ng_btsocket_hci_raw_send_ngmsg(path, 1304 NGM_HCI_NODE_SET_ROLE_SWITCH, 1305 &p->role_switch, 1306 sizeof(p->role_switch)); 1307 else 1308 error = EPERM; 1309 } break; 1310 1311 case SIOC_HCI_RAW_NODE_LIST_NAMES: { 1312 struct ng_btsocket_hci_raw_node_list_names *nl = 1313 (struct ng_btsocket_hci_raw_node_list_names *) data; 1314 struct nodeinfo *ni = nl->names; 1315 1316 if (nl->num_names == 0) { 1317 error = EINVAL; 1318 break; 1319 } 1320 1321 NG_MKMESSAGE(msg, NGM_GENERIC_COOKIE, NGM_LISTNAMES, 1322 0, M_NOWAIT); 1323 if (msg == NULL) { 1324 error = ENOMEM; 1325 break; 1326 } 1327 ng_btsocket_hci_raw_get_token(&msg->header.token); 1328 pcb->token = msg->header.token; 1329 pcb->msg = NULL; 1330 1331 NG_SEND_MSG_PATH(error, ng_btsocket_hci_raw_node, msg, ".:", 0); 1332 if (error != 0) { 1333 pcb->token = 0; 1334 break; 1335 } 1336 1337 error = msleep(&pcb->msg, &pcb->pcb_mtx, 1338 PZERO|PCATCH, "hcictl", 1339 ng_btsocket_hci_raw_ioctl_timeout * hz); 1340 pcb->token = 0; 1341 1342 if (error != 0) 1343 break; 1344 1345 if (pcb->msg != NULL && pcb->msg->header.cmd == NGM_LISTNAMES) { 1346 /* Return data back to user space */ 1347 struct namelist *nl1 = (struct namelist *) pcb->msg->data; 1348 struct nodeinfo *ni1 = &nl1->nodeinfo[0]; 1349 1350 while (nl->num_names > 0 && nl1->numnames > 0) { 1351 if (strcmp(ni1->type, NG_HCI_NODE_TYPE) == 0) { 1352 error = copyout((caddr_t) ni1, 1353 (caddr_t) ni, 1354 sizeof(*ni)); 1355 if (error != 0) 1356 break; 1357 1358 nl->num_names --; 1359 ni ++; 1360 } 1361 1362 nl1->numnames --; 1363 ni1 ++; 1364 } 1365 1366 nl->num_names = ni - nl->names; 1367 } else 1368 error = EINVAL; 1369 1370 NG_FREE_MSG(pcb->msg); /* checks for != NULL */ 1371 } break; 1372 1373 default: 1374 error = EINVAL; 1375 break; 1376 } 1377 1378 mtx_unlock(&pcb->pcb_mtx); 1379 1380 return (error); 1381} /* ng_btsocket_hci_raw_control */ 1382 1383/* 1384 * Process getsockopt/setsockopt system calls 1385 */ 1386 1387int 1388ng_btsocket_hci_raw_ctloutput(struct socket *so, struct sockopt *sopt) 1389{ 1390 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1391 struct ng_btsocket_hci_raw_filter filter; 1392 int error = 0, dir; 1393 1394 if (pcb == NULL) 1395 return (EINVAL); 1396 if (ng_btsocket_hci_raw_node == NULL) 1397 return (EINVAL); 1398 1399 if (sopt->sopt_level != SOL_HCI_RAW) 1400 return (0); 1401 1402 mtx_lock(&pcb->pcb_mtx); 1403 1404 switch (sopt->sopt_dir) { 1405 case SOPT_GET: 1406 switch (sopt->sopt_name) { 1407 case SO_HCI_RAW_FILTER: 1408 error = sooptcopyout(sopt, &pcb->filter, 1409 sizeof(pcb->filter)); 1410 break; 1411 1412 case SO_HCI_RAW_DIRECTION: 1413 dir = (pcb->flags & NG_BTSOCKET_HCI_RAW_DIRECTION)?1:0; 1414 error = sooptcopyout(sopt, &dir, sizeof(dir)); 1415 break; 1416 1417 default: 1418 error = EINVAL; 1419 break; 1420 } 1421 break; 1422 1423 case SOPT_SET: 1424 switch (sopt->sopt_name) { 1425 case SO_HCI_RAW_FILTER: 1426 error = sooptcopyin(sopt, &filter, sizeof(filter), 1427 sizeof(filter)); 1428 if (error == 0) 1429 bcopy(&filter, &pcb->filter, 1430 sizeof(pcb->filter)); 1431 break; 1432 1433 case SO_HCI_RAW_DIRECTION: 1434 error = sooptcopyin(sopt, &dir, sizeof(dir), 1435 sizeof(dir)); 1436 if (error != 0) 1437 break; 1438 1439 if (dir) 1440 pcb->flags |= NG_BTSOCKET_HCI_RAW_DIRECTION; 1441 else 1442 pcb->flags &= ~NG_BTSOCKET_HCI_RAW_DIRECTION; 1443 break; 1444 1445 default: 1446 error = EINVAL; 1447 break; 1448 } 1449 break; 1450 1451 default: 1452 error = EINVAL; 1453 break; 1454 } 1455 1456 mtx_unlock(&pcb->pcb_mtx); 1457 1458 return (error); 1459} /* ng_btsocket_hci_raw_ctloutput */ 1460 1461/* 1462 * Detach raw HCI socket 1463 */ 1464 1465void 1466ng_btsocket_hci_raw_detach(struct socket *so) 1467{ 1468 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1469 1470 KASSERT(pcb != NULL, ("ng_btsocket_hci_raw_detach: pcb == NULL")); 1471 1472 if (ng_btsocket_hci_raw_node == NULL) 1473 return; 1474 1475 mtx_lock(&ng_btsocket_hci_raw_sockets_mtx); 1476 mtx_lock(&pcb->pcb_mtx); 1477 1478 LIST_REMOVE(pcb, next); 1479 1480 mtx_unlock(&pcb->pcb_mtx); 1481 mtx_unlock(&ng_btsocket_hci_raw_sockets_mtx); 1482 1483 mtx_destroy(&pcb->pcb_mtx); 1484 1485 bzero(pcb, sizeof(*pcb)); 1486 FREE(pcb, M_NETGRAPH_BTSOCKET_HCI_RAW); 1487 1488 so->so_pcb = NULL; 1489} /* ng_btsocket_hci_raw_detach */ 1490 1491/* 1492 * Disconnect raw HCI socket 1493 */ 1494 1495int 1496ng_btsocket_hci_raw_disconnect(struct socket *so) 1497{ 1498 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1499 1500 if (pcb == NULL) 1501 return (EINVAL); 1502 if (ng_btsocket_hci_raw_node == NULL) 1503 return (EINVAL); 1504 1505 mtx_lock(&pcb->pcb_mtx); 1506 soisdisconnected(so); 1507 mtx_unlock(&pcb->pcb_mtx); 1508 1509 return (0); 1510} /* ng_btsocket_hci_raw_disconnect */ 1511 1512/* 1513 * Get socket peer's address 1514 */ 1515 1516int 1517ng_btsocket_hci_raw_peeraddr(struct socket *so, struct sockaddr **nam) 1518{ 1519 return (ng_btsocket_hci_raw_sockaddr(so, nam)); 1520} /* ng_btsocket_hci_raw_peeraddr */ 1521 1522/* 1523 * Send data 1524 */ 1525 1526int 1527ng_btsocket_hci_raw_send(struct socket *so, int flags, struct mbuf *m, 1528 struct sockaddr *sa, struct mbuf *control, struct thread *td) 1529{ 1530 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1531 struct mbuf *nam = NULL; 1532 int error = 0; 1533 1534 if (ng_btsocket_hci_raw_node == NULL) { 1535 error = ENETDOWN; 1536 goto drop; 1537 } 1538 if (pcb == NULL) { 1539 error = EINVAL; 1540 goto drop; 1541 } 1542 if (control != NULL) { 1543 error = EINVAL; 1544 goto drop; 1545 } 1546 1547 if (m->m_pkthdr.len < sizeof(ng_hci_cmd_pkt_t) || 1548 m->m_pkthdr.len > sizeof(ng_hci_cmd_pkt_t) + NG_HCI_CMD_PKT_SIZE) { 1549 error = EMSGSIZE; 1550 goto drop; 1551 } 1552 1553 if (m->m_len < sizeof(ng_hci_cmd_pkt_t)) { 1554 if ((m = m_pullup(m, sizeof(ng_hci_cmd_pkt_t))) == NULL) { 1555 error = ENOBUFS; 1556 goto drop; 1557 } 1558 } 1559 if (*mtod(m, u_int8_t *) != NG_HCI_CMD_PKT) { 1560 error = ENOTSUP; 1561 goto drop; 1562 } 1563 1564 mtx_lock(&pcb->pcb_mtx); 1565 1566 error = ng_btsocket_hci_raw_filter(pcb, m, 0); 1567 if (error != 0) { 1568 mtx_unlock(&pcb->pcb_mtx); 1569 goto drop; 1570 } 1571 1572 if (sa == NULL) { 1573 if (pcb->addr.hci_node[0] == 0) { 1574 mtx_unlock(&pcb->pcb_mtx); 1575 error = EDESTADDRREQ; 1576 goto drop; 1577 } 1578 1579 sa = (struct sockaddr *) &pcb->addr; 1580 } 1581 1582 MGET(nam, M_DONTWAIT, MT_SONAME); 1583 if (nam == NULL) { 1584 mtx_unlock(&pcb->pcb_mtx); 1585 error = ENOBUFS; 1586 goto drop; 1587 } 1588 1589 nam->m_len = sizeof(struct sockaddr_hci); 1590 bcopy(sa,mtod(nam, struct sockaddr_hci *),sizeof(struct sockaddr_hci)); 1591 1592 nam->m_next = m; 1593 m = NULL; 1594 1595 mtx_unlock(&pcb->pcb_mtx); 1596 1597 return (ng_send_fn(ng_btsocket_hci_raw_node, NULL, 1598 ng_btsocket_hci_raw_output, nam, 0)); 1599drop: 1600 NG_FREE_M(control); /* NG_FREE_M checks for != NULL */ 1601 NG_FREE_M(nam); 1602 NG_FREE_M(m); 1603 1604 return (error); 1605} /* ng_btsocket_hci_raw_send */ 1606 1607/* 1608 * Get socket address 1609 */ 1610 1611int 1612ng_btsocket_hci_raw_sockaddr(struct socket *so, struct sockaddr **nam) 1613{ 1614 ng_btsocket_hci_raw_pcb_p pcb = so2hci_raw_pcb(so); 1615 struct sockaddr_hci sa; 1616 1617 if (pcb == NULL) 1618 return (EINVAL); 1619 if (ng_btsocket_hci_raw_node == NULL) 1620 return (EINVAL); 1621 1622 bzero(&sa, sizeof(sa)); 1623 sa.hci_len = sizeof(sa); 1624 sa.hci_family = AF_BLUETOOTH; 1625 1626 mtx_lock(&pcb->pcb_mtx); 1627 strlcpy(sa.hci_node, pcb->addr.hci_node, sizeof(sa.hci_node)); 1628 mtx_unlock(&pcb->pcb_mtx); 1629 1630 *nam = sodupsockaddr((struct sockaddr *) &sa, M_NOWAIT); 1631 1632 return ((*nam == NULL)? ENOMEM : 0); 1633} /* ng_btsocket_hci_raw_sockaddr */ 1634 1635