1/* 2 * ng_hci_main.c 3 */ 4 5/*- 6 * Copyright (c) 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_hci_main.c,v 1.2 2003/03/18 00:09:36 max Exp $ 31 * $FreeBSD$ 32 */ 33 34#include <sys/param.h> 35#include <sys/systm.h> 36#include <sys/kernel.h> 37#include <sys/endian.h> 38#include <sys/malloc.h> 39#include <sys/mbuf.h> 40#include <sys/queue.h> 41#include <netgraph/ng_message.h> 42#include <netgraph/netgraph.h> 43#include <netgraph/ng_parse.h> 44#include <netgraph/bluetooth/include/ng_bluetooth.h> 45#include <netgraph/bluetooth/include/ng_hci.h> 46#include <netgraph/bluetooth/hci/ng_hci_var.h> 47#include <netgraph/bluetooth/hci/ng_hci_prse.h> 48#include <netgraph/bluetooth/hci/ng_hci_cmds.h> 49#include <netgraph/bluetooth/hci/ng_hci_evnt.h> 50#include <netgraph/bluetooth/hci/ng_hci_ulpi.h> 51#include <netgraph/bluetooth/hci/ng_hci_misc.h> 52 53/****************************************************************************** 54 ****************************************************************************** 55 ** This node implements Bluetooth Host Controller Interface (HCI) 56 ****************************************************************************** 57 ******************************************************************************/ 58 59/* MALLOC define */ 60#ifdef NG_SEPARATE_MALLOC 61MALLOC_DEFINE(M_NETGRAPH_HCI, "netgraph_hci", "Netgraph Bluetooth HCI node"); 62#else 63#define M_NETGRAPH_HCI M_NETGRAPH 64#endif /* NG_SEPARATE_MALLOC */ 65 66/* Netgraph node methods */ 67static ng_constructor_t ng_hci_constructor; 68static ng_shutdown_t ng_hci_shutdown; 69static ng_newhook_t ng_hci_newhook; 70static ng_connect_t ng_hci_connect; 71static ng_disconnect_t ng_hci_disconnect; 72static ng_rcvmsg_t ng_hci_default_rcvmsg; 73static ng_rcvmsg_t ng_hci_upper_rcvmsg; 74static ng_rcvdata_t ng_hci_drv_rcvdata; 75static ng_rcvdata_t ng_hci_acl_rcvdata; 76static ng_rcvdata_t ng_hci_sco_rcvdata; 77static ng_rcvdata_t ng_hci_raw_rcvdata; 78 79/* Netgraph node type descriptor */ 80static struct ng_type typestruct = { 81 .version = NG_ABI_VERSION, 82 .name = NG_HCI_NODE_TYPE, 83 .constructor = ng_hci_constructor, 84 .rcvmsg = ng_hci_default_rcvmsg, 85 .shutdown = ng_hci_shutdown, 86 .newhook = ng_hci_newhook, 87 .connect = ng_hci_connect, 88 .rcvdata = ng_hci_drv_rcvdata, 89 .disconnect = ng_hci_disconnect, 90 .cmdlist = ng_hci_cmdlist, 91}; 92NETGRAPH_INIT(hci, &typestruct); 93MODULE_VERSION(ng_hci, NG_BLUETOOTH_VERSION); 94MODULE_DEPEND(ng_hci, ng_bluetooth, NG_BLUETOOTH_VERSION, 95 NG_BLUETOOTH_VERSION, NG_BLUETOOTH_VERSION); 96 97/***************************************************************************** 98 ***************************************************************************** 99 ** Netgraph methods implementation 100 ***************************************************************************** 101 *****************************************************************************/ 102 103/* 104 * Create new instance of HCI node (new unit) 105 */ 106 107static int 108ng_hci_constructor(node_p node) 109{ 110 ng_hci_unit_p unit = NULL; 111 112 unit = malloc(sizeof(*unit), M_NETGRAPH_HCI, M_WAITOK | M_ZERO); 113 114 unit->node = node; 115 unit->debug = NG_HCI_WARN_LEVEL; 116 117 unit->link_policy_mask = 0xffff; /* Enable all supported modes */ 118 unit->packet_mask = 0xffff; /* Enable all packet types */ 119 unit->role_switch = 1; /* Enable role switch (if device supports it) */ 120 121 /* 122 * Set default buffer info 123 * 124 * One HCI command 125 * One ACL packet with max. size of 17 bytes (1 DM1 packet) 126 * One SCO packet with max. size of 10 bytes (1 HV1 packet) 127 */ 128 129 NG_HCI_BUFF_CMD_SET(unit->buffer, 1); 130 NG_HCI_BUFF_ACL_SET(unit->buffer, 1, 17, 1); 131 NG_HCI_BUFF_SCO_SET(unit->buffer, 1, 10, 1); 132 133 /* Init command queue & command timeout handler */ 134 ng_callout_init(&unit->cmd_timo); 135 NG_BT_MBUFQ_INIT(&unit->cmdq, NG_HCI_CMD_QUEUE_LEN); 136 137 /* Init lists */ 138 LIST_INIT(&unit->con_list); 139 LIST_INIT(&unit->neighbors); 140 141 /* 142 * This node has to be a WRITER because both data and messages 143 * can change node state. 144 */ 145 146 NG_NODE_FORCE_WRITER(node); 147 NG_NODE_SET_PRIVATE(node, unit); 148 149 return (0); 150} /* ng_hci_constructor */ 151 152/* 153 * Destroy the node 154 */ 155 156static int 157ng_hci_shutdown(node_p node) 158{ 159 ng_hci_unit_p unit = (ng_hci_unit_p) NG_NODE_PRIVATE(node); 160 161 NG_NODE_SET_PRIVATE(node, NULL); 162 NG_NODE_UNREF(node); 163 164 unit->node = NULL; 165 ng_hci_unit_clean(unit, 0x16 /* Connection terminated by local host */); 166 167 NG_BT_MBUFQ_DESTROY(&unit->cmdq); 168 169 bzero(unit, sizeof(*unit)); 170 free(unit, M_NETGRAPH_HCI); 171 172 return (0); 173} /* ng_hci_shutdown */ 174 175/* 176 * Give our OK for a hook to be added. Unit driver is connected to the driver 177 * (NG_HCI_HOOK_DRV) hook. Upper layer protocols are connected to appropriate 178 * (NG_HCI_HOOK_ACL or NG_HCI_HOOK_SCO) hooks. 179 */ 180 181static int 182ng_hci_newhook(node_p node, hook_p hook, char const *name) 183{ 184 ng_hci_unit_p unit = (ng_hci_unit_p) NG_NODE_PRIVATE(node); 185 hook_p *h = NULL; 186 187 if (strcmp(name, NG_HCI_HOOK_DRV) == 0) 188 h = &unit->drv; 189 else if (strcmp(name, NG_HCI_HOOK_ACL) == 0) 190 h = &unit->acl; 191 else if (strcmp(name, NG_HCI_HOOK_SCO) == 0) 192 h = &unit->sco; 193 else if (strcmp(name, NG_HCI_HOOK_RAW) == 0) 194 h = &unit->raw; 195 else 196 return (EINVAL); 197 198 if (*h != NULL) 199 return (EISCONN); 200 201 *h = hook; 202 203 return (0); 204} /* ng_hci_newhook */ 205 206/* 207 * Give our final OK to connect hook 208 */ 209 210static int 211ng_hci_connect(hook_p hook) 212{ 213 ng_hci_unit_p unit = (ng_hci_unit_p) NG_NODE_PRIVATE(NG_HOOK_NODE(hook)); 214 215 if (hook != unit->drv) { 216 if (hook == unit->acl) { 217 NG_HOOK_SET_RCVMSG(hook, ng_hci_upper_rcvmsg); 218 NG_HOOK_SET_RCVDATA(hook, ng_hci_acl_rcvdata); 219 } else if (hook == unit->sco) { 220 NG_HOOK_SET_RCVMSG(hook, ng_hci_upper_rcvmsg); 221 NG_HOOK_SET_RCVDATA(hook, ng_hci_sco_rcvdata); 222 } else 223 NG_HOOK_SET_RCVDATA(hook, ng_hci_raw_rcvdata); 224 225 /* Send delayed notification to the upper layers */ 226 if (hook != unit->raw) 227 ng_send_fn(unit->node, hook, ng_hci_node_is_up, NULL,0); 228 } else 229 unit->state |= NG_HCI_UNIT_CONNECTED; 230 231 return (0); 232} /* ng_hci_connect */ 233 234/* 235 * Disconnect the hook 236 */ 237 238static int 239ng_hci_disconnect(hook_p hook) 240{ 241 ng_hci_unit_p unit = (ng_hci_unit_p) NG_NODE_PRIVATE(NG_HOOK_NODE(hook)); 242 243 if (hook == unit->acl) 244 unit->acl = NULL; 245 else if (hook == unit->sco) 246 unit->sco = NULL; 247 else if (hook == unit->raw) 248 unit->raw = NULL; 249 else if (hook == unit->drv) { 250 unit->drv = NULL; 251 252 /* Connection terminated by local host */ 253 ng_hci_unit_clean(unit, 0x16); 254 unit->state &= ~(NG_HCI_UNIT_CONNECTED|NG_HCI_UNIT_INITED); 255 } else 256 return (EINVAL); 257 258 /* Shutdown when all hooks are disconnected */ 259 if ((NG_NODE_NUMHOOKS(NG_HOOK_NODE(hook)) == 0) && 260 (NG_NODE_IS_VALID(NG_HOOK_NODE(hook)))) 261 ng_rmnode_self(NG_HOOK_NODE(hook)); 262 263 return (0); 264} /* ng_hci_disconnect */ 265 266/* 267 * Default control message processing routine. Control message could be: 268 * 269 * 1) GENERIC Netgraph messages 270 * 271 * 2) Control message directed to the node itself. 272 */ 273 274static int 275ng_hci_default_rcvmsg(node_p node, item_p item, hook_p lasthook) 276{ 277 ng_hci_unit_p unit = (ng_hci_unit_p) NG_NODE_PRIVATE(node); 278 struct ng_mesg *msg = NULL, *rsp = NULL; 279 int error = 0; 280 281 NGI_GET_MSG(item, msg); 282 283 switch (msg->header.typecookie) { 284 case NGM_GENERIC_COOKIE: 285 switch (msg->header.cmd) { 286 case NGM_TEXT_STATUS: { 287 int cmd_avail, 288 acl_total, acl_avail, acl_size, 289 sco_total, sco_avail, sco_size; 290 291 NG_MKRESPONSE(rsp, msg, NG_TEXTRESPONSE, M_NOWAIT); 292 if (rsp == NULL) { 293 error = ENOMEM; 294 break; 295 } 296 297 NG_HCI_BUFF_CMD_GET(unit->buffer, cmd_avail); 298 299 NG_HCI_BUFF_ACL_AVAIL(unit->buffer, acl_avail); 300 NG_HCI_BUFF_ACL_TOTAL(unit->buffer, acl_total); 301 NG_HCI_BUFF_ACL_SIZE(unit->buffer, acl_size); 302 303 NG_HCI_BUFF_SCO_AVAIL(unit->buffer, sco_avail); 304 NG_HCI_BUFF_SCO_TOTAL(unit->buffer, sco_total); 305 NG_HCI_BUFF_SCO_SIZE(unit->buffer, sco_size); 306 307 snprintf(rsp->data, NG_TEXTRESPONSE, 308 "bdaddr %x:%x:%x:%x:%x:%x\n" \ 309 "Hooks %s %s %s %s\n" \ 310 "State %#x\n" \ 311 "Queue cmd:%d\n" \ 312 "Buffer cmd:%d,acl:%d,%d,%d,sco:%d,%d,%d", 313 unit->bdaddr.b[5], unit->bdaddr.b[4], 314 unit->bdaddr.b[3], unit->bdaddr.b[2], 315 unit->bdaddr.b[1], unit->bdaddr.b[0], 316 (unit->drv != NULL)? NG_HCI_HOOK_DRV : "", 317 (unit->acl != NULL)? NG_HCI_HOOK_ACL : "", 318 (unit->sco != NULL)? NG_HCI_HOOK_SCO : "", 319 (unit->raw != NULL)? NG_HCI_HOOK_RAW : "", 320 unit->state, 321 NG_BT_MBUFQ_LEN(&unit->cmdq), 322 cmd_avail, 323 acl_avail, acl_total, acl_size, 324 sco_avail, sco_total, sco_size); 325 } break; 326 327 default: 328 error = EINVAL; 329 break; 330 } 331 break; 332 333 case NGM_HCI_COOKIE: 334 switch (msg->header.cmd) { 335 /* Get current node state */ 336 case NGM_HCI_NODE_GET_STATE: 337 NG_MKRESPONSE(rsp, msg, sizeof(unit->state), M_NOWAIT); 338 if (rsp == NULL) { 339 error = ENOMEM; 340 break; 341 } 342 343 *((ng_hci_node_state_ep *)(rsp->data)) = unit->state; 344 break; 345 346 /* Turn INITED bit - node initialized */ 347 case NGM_HCI_NODE_INIT: 348 if (bcmp(&unit->bdaddr, NG_HCI_BDADDR_ANY, 349 sizeof(bdaddr_t)) == 0) { 350 error = ENXIO; 351 break; 352 } 353 354 unit->state |= NG_HCI_UNIT_INITED; 355 356 ng_hci_node_is_up(unit->node, unit->acl, NULL, 0); 357 ng_hci_node_is_up(unit->node, unit->sco, NULL, 0); 358 break; 359 360 /* Get node debug level */ 361 case NGM_HCI_NODE_GET_DEBUG: 362 NG_MKRESPONSE(rsp, msg, sizeof(unit->debug), M_NOWAIT); 363 if (rsp == NULL) { 364 error = ENOMEM; 365 break; 366 } 367 368 *((ng_hci_node_debug_ep *)(rsp->data)) = unit->debug; 369 break; 370 371 /* Set node debug level */ 372 case NGM_HCI_NODE_SET_DEBUG: 373 if (msg->header.arglen != sizeof(ng_hci_node_debug_ep)){ 374 error = EMSGSIZE; 375 break; 376 } 377 378 unit->debug = *((ng_hci_node_debug_ep *)(msg->data)); 379 break; 380 381 /* Get buffer info */ 382 case NGM_HCI_NODE_GET_BUFFER: { 383 ng_hci_node_buffer_ep *ep = NULL; 384 385 NG_MKRESPONSE(rsp, msg, sizeof(ng_hci_node_buffer_ep), 386 M_NOWAIT); 387 if (rsp == NULL) { 388 error = ENOMEM; 389 break; 390 } 391 392 ep = (ng_hci_node_buffer_ep *)(rsp->data); 393 394 NG_HCI_BUFF_CMD_GET(unit->buffer, ep->cmd_free); 395 NG_HCI_BUFF_ACL_AVAIL(unit->buffer, ep->acl_free); 396 NG_HCI_BUFF_ACL_TOTAL(unit->buffer, ep->acl_pkts); 397 NG_HCI_BUFF_ACL_SIZE(unit->buffer, ep->acl_size); 398 NG_HCI_BUFF_SCO_AVAIL(unit->buffer, ep->sco_free); 399 NG_HCI_BUFF_SCO_TOTAL(unit->buffer, ep->sco_pkts); 400 NG_HCI_BUFF_SCO_SIZE(unit->buffer, ep->sco_size); 401 } break; 402 403 /* Get BDADDR */ 404 case NGM_HCI_NODE_GET_BDADDR: 405 NG_MKRESPONSE(rsp, msg, sizeof(bdaddr_t), M_NOWAIT); 406 if (rsp == NULL) { 407 error = ENOMEM; 408 break; 409 } 410 411 bcopy(&unit->bdaddr, rsp->data, sizeof(bdaddr_t)); 412 break; 413 414 /* Get features */ 415 case NGM_HCI_NODE_GET_FEATURES: 416 NG_MKRESPONSE(rsp,msg,sizeof(unit->features),M_NOWAIT); 417 if (rsp == NULL) { 418 error = ENOMEM; 419 break; 420 } 421 422 bcopy(&unit->features,rsp->data,sizeof(unit->features)); 423 break; 424 425 /* Get stat */ 426 case NGM_HCI_NODE_GET_STAT: 427 NG_MKRESPONSE(rsp, msg, sizeof(unit->stat), M_NOWAIT); 428 if (rsp == NULL) { 429 error = ENOMEM; 430 break; 431 } 432 433 bcopy(&unit->stat, rsp->data, sizeof(unit->stat)); 434 break; 435 436 /* Reset stat */ 437 case NGM_HCI_NODE_RESET_STAT: 438 NG_HCI_STAT_RESET(unit->stat); 439 break; 440 441 /* Clean up neighbors list */ 442 case NGM_HCI_NODE_FLUSH_NEIGHBOR_CACHE: 443 ng_hci_flush_neighbor_cache(unit); 444 break; 445 446 /* Get neighbor cache entries */ 447 case NGM_HCI_NODE_GET_NEIGHBOR_CACHE: { 448 ng_hci_neighbor_p n = NULL; 449 ng_hci_node_get_neighbor_cache_ep *e1 = NULL; 450 ng_hci_node_neighbor_cache_entry_ep *e2 = NULL; 451 int s = 0; 452 453 /* Look for the fresh entries in the cache */ 454 for (n = LIST_FIRST(&unit->neighbors); n != NULL; ) { 455 ng_hci_neighbor_p nn = LIST_NEXT(n, next); 456 457 if (ng_hci_neighbor_stale(n)) 458 ng_hci_free_neighbor(n); 459 else 460 s ++; 461 462 n = nn; 463 } 464 if (s > NG_HCI_MAX_NEIGHBOR_NUM) 465 s = NG_HCI_MAX_NEIGHBOR_NUM; 466 467 /* Prepare response */ 468 NG_MKRESPONSE(rsp, msg, sizeof(*e1) + s * sizeof(*e2), 469 M_NOWAIT); 470 if (rsp == NULL) { 471 error = ENOMEM; 472 break; 473 } 474 475 e1 = (ng_hci_node_get_neighbor_cache_ep *)(rsp->data); 476 e2 = (ng_hci_node_neighbor_cache_entry_ep *)(e1 + 1); 477 478 e1->num_entries = s; 479 480 LIST_FOREACH(n, &unit->neighbors, next) { 481 e2->page_scan_rep_mode = n->page_scan_rep_mode; 482 e2->page_scan_mode = n->page_scan_mode; 483 e2->clock_offset = n->clock_offset; 484 bcopy(&n->bdaddr, &e2->bdaddr, 485 sizeof(e2->bdaddr)); 486 bcopy(&n->features, &e2->features, 487 sizeof(e2->features)); 488 489 e2 ++; 490 if (--s <= 0) 491 break; 492 } 493 } break; 494 495 /* Get connection list */ 496 case NGM_HCI_NODE_GET_CON_LIST: { 497 ng_hci_unit_con_p c = NULL; 498 ng_hci_node_con_list_ep *e1 = NULL; 499 ng_hci_node_con_ep *e2 = NULL; 500 int s = 0; 501 502 /* Count number of connections in the list */ 503 LIST_FOREACH(c, &unit->con_list, next) 504 s ++; 505 if (s > NG_HCI_MAX_CON_NUM) 506 s = NG_HCI_MAX_CON_NUM; 507 508 /* Prepare response */ 509 NG_MKRESPONSE(rsp, msg, sizeof(*e1) + s * sizeof(*e2), 510 M_NOWAIT); 511 if (rsp == NULL) { 512 error = ENOMEM; 513 break; 514 } 515 516 e1 = (ng_hci_node_con_list_ep *)(rsp->data); 517 e2 = (ng_hci_node_con_ep *)(e1 + 1); 518 519 e1->num_connections = s; 520 521 LIST_FOREACH(c, &unit->con_list, next) { 522 e2->link_type = c->link_type; 523 e2->encryption_mode= c->encryption_mode; 524 e2->mode = c->mode; 525 e2->role = c->role; 526 527 e2->state = c->state; 528 529 e2->pending = c->pending; 530 e2->queue_len = NG_BT_ITEMQ_LEN(&c->conq); 531 532 e2->con_handle = c->con_handle; 533 bcopy(&c->bdaddr, &e2->bdaddr, 534 sizeof(e2->bdaddr)); 535 536 e2 ++; 537 if (--s <= 0) 538 break; 539 } 540 } break; 541 542 /* Get link policy settings mask */ 543 case NGM_HCI_NODE_GET_LINK_POLICY_SETTINGS_MASK: 544 NG_MKRESPONSE(rsp, msg, sizeof(unit->link_policy_mask), 545 M_NOWAIT); 546 if (rsp == NULL) { 547 error = ENOMEM; 548 break; 549 } 550 551 *((ng_hci_node_link_policy_mask_ep *)(rsp->data)) = 552 unit->link_policy_mask; 553 break; 554 555 /* Set link policy settings mask */ 556 case NGM_HCI_NODE_SET_LINK_POLICY_SETTINGS_MASK: 557 if (msg->header.arglen != 558 sizeof(ng_hci_node_link_policy_mask_ep)) { 559 error = EMSGSIZE; 560 break; 561 } 562 563 unit->link_policy_mask = 564 *((ng_hci_node_link_policy_mask_ep *) 565 (msg->data)); 566 break; 567 568 /* Get packet mask */ 569 case NGM_HCI_NODE_GET_PACKET_MASK: 570 NG_MKRESPONSE(rsp, msg, sizeof(unit->packet_mask), 571 M_NOWAIT); 572 if (rsp == NULL) { 573 error = ENOMEM; 574 break; 575 } 576 577 *((ng_hci_node_packet_mask_ep *)(rsp->data)) = 578 unit->packet_mask; 579 break; 580 581 /* Set packet mask */ 582 case NGM_HCI_NODE_SET_PACKET_MASK: 583 if (msg->header.arglen != 584 sizeof(ng_hci_node_packet_mask_ep)) { 585 error = EMSGSIZE; 586 break; 587 } 588 589 unit->packet_mask = 590 *((ng_hci_node_packet_mask_ep *)(msg->data)); 591 break; 592 593 /* Get role switch */ 594 case NGM_HCI_NODE_GET_ROLE_SWITCH: 595 NG_MKRESPONSE(rsp, msg, sizeof(unit->role_switch), 596 M_NOWAIT); 597 if (rsp == NULL) { 598 error = ENOMEM; 599 break; 600 } 601 602 *((ng_hci_node_role_switch_ep *)(rsp->data)) = 603 unit->role_switch; 604 break; 605 606 /* Set role switch */ 607 case NGM_HCI_NODE_SET_ROLE_SWITCH: 608 if (msg->header.arglen != 609 sizeof(ng_hci_node_role_switch_ep)) { 610 error = EMSGSIZE; 611 break; 612 } 613 614 unit->role_switch = 615 *((ng_hci_node_role_switch_ep *)(msg->data)); 616 break; 617 618 default: 619 error = EINVAL; 620 break; 621 } 622 break; 623 624 default: 625 error = EINVAL; 626 break; 627 } 628 629 /* NG_RESPOND_MSG should take care of "item" and "rsp" */ 630 NG_RESPOND_MSG(error, node, item, rsp); 631 NG_FREE_MSG(msg); 632 633 return (error); 634} /* ng_hci_default_rcvmsg */ 635 636/* 637 * Process control message from upstream hooks (ACL and SCO). 638 * Handle LP_xxx messages here, give everything else to default routine. 639 */ 640 641static int 642ng_hci_upper_rcvmsg(node_p node, item_p item, hook_p lasthook) 643{ 644 ng_hci_unit_p unit = (ng_hci_unit_p) NG_NODE_PRIVATE(node); 645 int error = 0; 646 647 switch (NGI_MSG(item)->header.typecookie) { 648 case NGM_HCI_COOKIE: 649 switch (NGI_MSG(item)->header.cmd) { 650 case NGM_HCI_LP_CON_REQ: 651 error = ng_hci_lp_con_req(unit, item, lasthook); 652 break; 653 654 case NGM_HCI_LP_DISCON_REQ: /* XXX not defined by specs */ 655 error = ng_hci_lp_discon_req(unit, item, lasthook); 656 break; 657 658 case NGM_HCI_LP_CON_RSP: 659 error = ng_hci_lp_con_rsp(unit, item, lasthook); 660 break; 661 662 case NGM_HCI_LP_QOS_REQ: 663 error = ng_hci_lp_qos_req(unit, item, lasthook); 664 break; 665 666 default: 667 error = ng_hci_default_rcvmsg(node, item, lasthook); 668 break; 669 } 670 break; 671 672 default: 673 error = ng_hci_default_rcvmsg(node, item, lasthook); 674 break; 675 } 676 677 return (error); 678} /* ng_hci_upper_rcvmsg */ 679 680/* 681 * Process data packet from the driver hook. 682 * We expect HCI events, ACL or SCO data packets. 683 */ 684 685static int 686ng_hci_drv_rcvdata(hook_p hook, item_p item) 687{ 688 ng_hci_unit_p unit = (ng_hci_unit_p) NG_NODE_PRIVATE(NG_HOOK_NODE(hook)); 689 struct mbuf *m = NULL; 690 int error = 0; 691 692 /* Process packet */ 693 m = NGI_M(item); /* item still has mbuf, just peeking */ 694 m->m_flags |= M_PROTO1; /* mark as incoming packet */ 695 696 NG_HCI_STAT_BYTES_RECV(unit->stat, m->m_pkthdr.len); 697 698 /* Give copy packet to RAW hook */ 699 ng_hci_mtap(unit, m); 700 701 /* 702 * XXX XXX XXX 703 * Lower layer drivers MUST NOT send mbuf chain with empty mbuf at 704 * the beginning of the chain. HCI layer WILL NOT call m_pullup() here. 705 */ 706 707 switch (*mtod(m, u_int8_t *)) { 708 case NG_HCI_ACL_DATA_PKT: 709 NG_HCI_STAT_ACL_RECV(unit->stat); 710 711 if ((unit->state & NG_HCI_UNIT_READY) != NG_HCI_UNIT_READY || 712 unit->acl == NULL || NG_HOOK_NOT_VALID(unit->acl)) { 713 NG_HCI_WARN( 714"%s: %s - could not forward HCI ACL data packet, state=%#x, hook=%p\n", 715 __func__, NG_NODE_NAME(unit->node), 716 unit->state, unit->acl); 717 718 NG_FREE_ITEM(item); 719 } else 720 NG_FWD_ITEM_HOOK(error, item, unit->acl); 721 break; 722 723 case NG_HCI_SCO_DATA_PKT: 724 NG_HCI_STAT_SCO_RECV(unit->stat); 725 726 if ((unit->state & NG_HCI_UNIT_READY) != NG_HCI_UNIT_READY || 727 unit->sco == NULL || NG_HOOK_NOT_VALID(unit->sco)) { 728 NG_HCI_INFO( 729"%s: %s - could not forward HCI SCO data packet, state=%#x, hook=%p\n", 730 __func__, NG_NODE_NAME(unit->node), 731 unit->state, unit->sco); 732 733 NG_FREE_ITEM(item); 734 } else 735 NG_FWD_ITEM_HOOK(error, item, unit->sco); 736 break; 737 738 case NG_HCI_EVENT_PKT: 739 NG_HCI_STAT_EVNT_RECV(unit->stat); 740 741 /* Detach mbuf, discard item and process event */ 742 NGI_GET_M(item, m); 743 NG_FREE_ITEM(item); 744 745 error = ng_hci_process_event(unit, m); 746 break; 747 748 default: 749 NG_HCI_ALERT( 750"%s: %s - got unknown HCI packet type=%#x\n", 751 __func__, NG_NODE_NAME(unit->node), 752 *mtod(m, u_int8_t *)); 753 754 NG_FREE_ITEM(item); 755 756 error = EINVAL; 757 break; 758 } 759 760 return (error); 761} /* ng_hci_drv_rcvdata */ 762 763/* 764 * Process data packet from ACL upstream hook. 765 * We expect valid HCI ACL data packets. 766 */ 767 768static int 769ng_hci_acl_rcvdata(hook_p hook, item_p item) 770{ 771 ng_hci_unit_p unit = (ng_hci_unit_p) NG_NODE_PRIVATE(NG_HOOK_NODE(hook)); 772 struct mbuf *m = NULL; 773 ng_hci_unit_con_p con = NULL; 774 u_int16_t con_handle; 775 int size, error = 0; 776 777 NG_HCI_BUFF_ACL_SIZE(unit->buffer, size); 778 779 /* Check packet */ 780 NGI_GET_M(item, m); 781 782 if (*mtod(m, u_int8_t *) != NG_HCI_ACL_DATA_PKT) { 783 NG_HCI_ALERT( 784"%s: %s - invalid HCI data packet type=%#x\n", 785 __func__, NG_NODE_NAME(unit->node), 786 *mtod(m, u_int8_t *)); 787 788 error = EINVAL; 789 goto drop; 790 } 791 792 if (m->m_pkthdr.len < sizeof(ng_hci_acldata_pkt_t) || 793 m->m_pkthdr.len > sizeof(ng_hci_acldata_pkt_t) + size) { 794 NG_HCI_ALERT( 795"%s: %s - invalid HCI ACL data packet, len=%d, mtu=%d\n", 796 __func__, NG_NODE_NAME(unit->node), 797 m->m_pkthdr.len, size); 798 799 error = EMSGSIZE; 800 goto drop; 801 } 802 803 NG_HCI_M_PULLUP(m, sizeof(ng_hci_acldata_pkt_t)); 804 if (m == NULL) { 805 error = ENOBUFS; 806 goto drop; 807 } 808 809 con_handle = NG_HCI_CON_HANDLE(le16toh( 810 mtod(m, ng_hci_acldata_pkt_t *)->con_handle)); 811 size = le16toh(mtod(m, ng_hci_acldata_pkt_t *)->length); 812 813 if (m->m_pkthdr.len != sizeof(ng_hci_acldata_pkt_t) + size) { 814 NG_HCI_ALERT( 815"%s: %s - invalid HCI ACL data packet size, len=%d, length=%d\n", 816 __func__, NG_NODE_NAME(unit->node), 817 m->m_pkthdr.len, size); 818 819 error = EMSGSIZE; 820 goto drop; 821 } 822 823 /* Queue packet */ 824 con = ng_hci_con_by_handle(unit, con_handle); 825 if (con == NULL) { 826 NG_HCI_ERR( 827"%s: %s - unexpected HCI ACL data packet. Connection does not exists, " \ 828"con_handle=%d\n", __func__, NG_NODE_NAME(unit->node), con_handle); 829 830 error = ENOENT; 831 goto drop; 832 } 833 834 if (con->link_type != NG_HCI_LINK_ACL) { 835 NG_HCI_ERR( 836"%s: %s - unexpected HCI ACL data packet. Not ACL link, con_handle=%d, " \ 837"link_type=%d\n", __func__, NG_NODE_NAME(unit->node), 838 con_handle, con->link_type); 839 840 error = EINVAL; 841 goto drop; 842 } 843 844 if (con->state != NG_HCI_CON_OPEN) { 845 NG_HCI_ERR( 846"%s: %s - unexpected HCI ACL data packet. Invalid connection state=%d, " \ 847"con_handle=%d\n", __func__, NG_NODE_NAME(unit->node), 848 con->state, con_handle); 849 850 error = EHOSTDOWN; 851 goto drop; 852 } 853 854 if (NG_BT_ITEMQ_FULL(&con->conq)) { 855 NG_HCI_ALERT( 856"%s: %s - dropping HCI ACL data packet, con_handle=%d, len=%d, queue_len=%d\n", 857 __func__, NG_NODE_NAME(unit->node), con_handle, 858 m->m_pkthdr.len, NG_BT_ITEMQ_LEN(&con->conq)); 859 860 NG_BT_ITEMQ_DROP(&con->conq); 861 862 error = ENOBUFS; 863 goto drop; 864 } 865 866 /* Queue item and schedule data transfer */ 867 NGI_M(item) = m; 868 NG_BT_ITEMQ_ENQUEUE(&con->conq, item); 869 item = NULL; 870 m = NULL; 871 872 ng_hci_send_data(unit); 873drop: 874 if (item != NULL) 875 NG_FREE_ITEM(item); 876 877 NG_FREE_M(m); /* NG_FREE_M() checks for m != NULL */ 878 879 return (error); 880} /* ng_hci_acl_rcvdata */ 881 882/* 883 * Process data packet from SCO upstream hook. 884 * We expect valid HCI SCO data packets 885 */ 886 887static int 888ng_hci_sco_rcvdata(hook_p hook, item_p item) 889{ 890 ng_hci_unit_p unit = (ng_hci_unit_p) NG_NODE_PRIVATE(NG_HOOK_NODE(hook)); 891 struct mbuf *m = NULL; 892 ng_hci_unit_con_p con = NULL; 893 u_int16_t con_handle; 894 int size, error = 0; 895 896 NG_HCI_BUFF_SCO_SIZE(unit->buffer, size); 897 898 /* Check packet */ 899 NGI_GET_M(item, m); 900 901 if (*mtod(m, u_int8_t *) != NG_HCI_SCO_DATA_PKT) { 902 NG_HCI_ALERT( 903"%s: %s - invalid HCI data packet type=%#x\n", 904 __func__, NG_NODE_NAME(unit->node), 905 *mtod(m, u_int8_t *)); 906 907 error = EINVAL; 908 goto drop; 909 } 910 911 if (m->m_pkthdr.len < sizeof(ng_hci_scodata_pkt_t) || 912 m->m_pkthdr.len > sizeof(ng_hci_scodata_pkt_t) + size) { 913 NG_HCI_ALERT( 914"%s: %s - invalid HCI SCO data packet, len=%d, mtu=%d\n", 915 __func__, NG_NODE_NAME(unit->node), 916 m->m_pkthdr.len, size); 917 918 error = EMSGSIZE; 919 goto drop; 920 } 921 922 NG_HCI_M_PULLUP(m, sizeof(ng_hci_scodata_pkt_t)); 923 if (m == NULL) { 924 error = ENOBUFS; 925 goto drop; 926 } 927 928 con_handle = NG_HCI_CON_HANDLE(le16toh( 929 mtod(m, ng_hci_scodata_pkt_t *)->con_handle)); 930 size = mtod(m, ng_hci_scodata_pkt_t *)->length; 931 932 if (m->m_pkthdr.len != sizeof(ng_hci_scodata_pkt_t) + size) { 933 NG_HCI_ALERT( 934"%s: %s - invalid HCI SCO data packet size, len=%d, length=%d\n", 935 __func__, NG_NODE_NAME(unit->node), 936 m->m_pkthdr.len, size); 937 938 error = EMSGSIZE; 939 goto drop; 940 } 941 942 /* Queue packet */ 943 con = ng_hci_con_by_handle(unit, con_handle); 944 if (con == NULL) { 945 NG_HCI_ERR( 946"%s: %s - unexpected HCI SCO data packet. Connection does not exists, " \ 947"con_handle=%d\n", __func__, NG_NODE_NAME(unit->node), con_handle); 948 949 error = ENOENT; 950 goto drop; 951 } 952 953 if (con->link_type != NG_HCI_LINK_SCO) { 954 NG_HCI_ERR( 955"%s: %s - unexpected HCI SCO data packet. Not SCO link, con_handle=%d, " \ 956"link_type=%d\n", __func__, NG_NODE_NAME(unit->node), 957 con_handle, con->link_type); 958 959 error = EINVAL; 960 goto drop; 961 } 962 963 if (con->state != NG_HCI_CON_OPEN) { 964 NG_HCI_ERR( 965"%s: %s - unexpected HCI SCO data packet. Invalid connection state=%d, " \ 966"con_handle=%d\n", __func__, NG_NODE_NAME(unit->node), 967 con->state, con_handle); 968 969 error = EHOSTDOWN; 970 goto drop; 971 } 972 973 if (NG_BT_ITEMQ_FULL(&con->conq)) { 974 NG_HCI_ALERT( 975"%s: %s - dropping HCI SCO data packet, con_handle=%d, len=%d, queue_len=%d\n", 976 __func__, NG_NODE_NAME(unit->node), con_handle, 977 m->m_pkthdr.len, NG_BT_ITEMQ_LEN(&con->conq)); 978 979 NG_BT_ITEMQ_DROP(&con->conq); 980 981 error = ENOBUFS; 982 goto drop; 983 } 984 985 /* Queue item and schedule data transfer */ 986 NGI_M(item) = m; 987 NG_BT_ITEMQ_ENQUEUE(&con->conq, item); 988 item = NULL; 989 m = NULL; 990 991 ng_hci_send_data(unit); 992drop: 993 if (item != NULL) 994 NG_FREE_ITEM(item); 995 996 NG_FREE_M(m); /* NG_FREE_M() checks for m != NULL */ 997 998 return (error); 999} /* ng_hci_sco_rcvdata */ 1000 1001/* 1002 * Process data packet from uptream RAW hook. 1003 * We expect valid HCI command packets. 1004 */ 1005 1006static int 1007ng_hci_raw_rcvdata(hook_p hook, item_p item) 1008{ 1009 ng_hci_unit_p unit = (ng_hci_unit_p) NG_NODE_PRIVATE(NG_HOOK_NODE(hook)); 1010 struct mbuf *m = NULL; 1011 int error = 0; 1012 1013 NGI_GET_M(item, m); 1014 NG_FREE_ITEM(item); 1015 1016 /* Check packet */ 1017 if (*mtod(m, u_int8_t *) != NG_HCI_CMD_PKT) { 1018 NG_HCI_ALERT( 1019"%s: %s - invalid HCI command packet type=%#x\n", 1020 __func__, NG_NODE_NAME(unit->node), 1021 *mtod(m, u_int8_t *)); 1022 1023 error = EINVAL; 1024 goto drop; 1025 } 1026 1027 if (m->m_pkthdr.len < sizeof(ng_hci_cmd_pkt_t)) { 1028 NG_HCI_ALERT( 1029"%s: %s - invalid HCI command packet len=%d\n", 1030 __func__, NG_NODE_NAME(unit->node), m->m_pkthdr.len); 1031 1032 error = EMSGSIZE; 1033 goto drop; 1034 } 1035 1036 NG_HCI_M_PULLUP(m, sizeof(ng_hci_cmd_pkt_t)); 1037 if (m == NULL) { 1038 error = ENOBUFS; 1039 goto drop; 1040 } 1041 1042 if (m->m_pkthdr.len != 1043 mtod(m, ng_hci_cmd_pkt_t *)->length + sizeof(ng_hci_cmd_pkt_t)) { 1044 NG_HCI_ALERT( 1045"%s: %s - invalid HCI command packet size, len=%d, length=%d\n", 1046 __func__, NG_NODE_NAME(unit->node), m->m_pkthdr.len, 1047 mtod(m, ng_hci_cmd_pkt_t *)->length); 1048 1049 error = EMSGSIZE; 1050 goto drop; 1051 } 1052 1053 if (mtod(m, ng_hci_cmd_pkt_t *)->opcode == 0) { 1054 NG_HCI_ALERT( 1055"%s: %s - invalid HCI command opcode\n", 1056 __func__, NG_NODE_NAME(unit->node)); 1057 1058 error = EINVAL; 1059 goto drop; 1060 } 1061 1062 if (NG_BT_MBUFQ_FULL(&unit->cmdq)) { 1063 NG_HCI_ALERT( 1064"%s: %s - dropping HCI command packet, len=%d, queue_len=%d\n", 1065 __func__, NG_NODE_NAME(unit->node), m->m_pkthdr.len, 1066 NG_BT_MBUFQ_LEN(&unit->cmdq)); 1067 1068 NG_BT_MBUFQ_DROP(&unit->cmdq); 1069 1070 error = ENOBUFS; 1071 goto drop; 1072 } 1073 1074 /* Queue and send command */ 1075 NG_BT_MBUFQ_ENQUEUE(&unit->cmdq, m); 1076 m = NULL; 1077 1078 if (!(unit->state & NG_HCI_UNIT_COMMAND_PENDING)) 1079 error = ng_hci_send_command(unit); 1080drop: 1081 NG_FREE_M(m); /* NG_FREE_M() checks for m != NULL */ 1082 1083 return (error); 1084} /* ng_hci_raw_rcvdata */ 1085 1086