1 /* 2 * ng_btsocket_sco.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_sco.c,v 1.2 2005/10/31 18:08:51 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/protosw.h> 50 #include <sys/queue.h> 51 #include <sys/socket.h> 52 #include <sys/socketvar.h> 53 #include <sys/sysctl.h> 54 #include <sys/taskqueue.h> 55 56 #include <net/vnet.h> 57 58 #include <netgraph/ng_message.h> 59 #include <netgraph/netgraph.h> 60 #include <netgraph/bluetooth/include/ng_bluetooth.h> 61 #include <netgraph/bluetooth/include/ng_hci.h> 62 #include <netgraph/bluetooth/include/ng_l2cap.h> 63 #include <netgraph/bluetooth/include/ng_btsocket.h> 64 #include <netgraph/bluetooth/include/ng_btsocket_sco.h> 65 66 /* MALLOC define */ 67 #ifdef NG_SEPARATE_MALLOC 68 static MALLOC_DEFINE(M_NETGRAPH_BTSOCKET_SCO, "netgraph_btsocks_sco", 69 "Netgraph Bluetooth SCO sockets"); 70 #else 71 #define M_NETGRAPH_BTSOCKET_SCO M_NETGRAPH 72 #endif /* NG_SEPARATE_MALLOC */ 73 74 /* Netgraph node methods */ 75 static ng_constructor_t ng_btsocket_sco_node_constructor; 76 static ng_rcvmsg_t ng_btsocket_sco_node_rcvmsg; 77 static ng_shutdown_t ng_btsocket_sco_node_shutdown; 78 static ng_newhook_t ng_btsocket_sco_node_newhook; 79 static ng_connect_t ng_btsocket_sco_node_connect; 80 static ng_rcvdata_t ng_btsocket_sco_node_rcvdata; 81 static ng_disconnect_t ng_btsocket_sco_node_disconnect; 82 83 static void ng_btsocket_sco_input (void *, int); 84 static void ng_btsocket_sco_rtclean (void *, int); 85 86 /* Netgraph type descriptor */ 87 static struct ng_type typestruct = { 88 .version = NG_ABI_VERSION, 89 .name = NG_BTSOCKET_SCO_NODE_TYPE, 90 .constructor = ng_btsocket_sco_node_constructor, 91 .rcvmsg = ng_btsocket_sco_node_rcvmsg, 92 .shutdown = ng_btsocket_sco_node_shutdown, 93 .newhook = ng_btsocket_sco_node_newhook, 94 .connect = ng_btsocket_sco_node_connect, 95 .rcvdata = ng_btsocket_sco_node_rcvdata, 96 .disconnect = ng_btsocket_sco_node_disconnect, 97 }; 98 99 /* Globals */ 100 static u_int32_t ng_btsocket_sco_debug_level; 101 static node_p ng_btsocket_sco_node; 102 static struct ng_bt_itemq ng_btsocket_sco_queue; 103 static struct mtx ng_btsocket_sco_queue_mtx; 104 static struct task ng_btsocket_sco_queue_task; 105 static struct mtx ng_btsocket_sco_sockets_mtx; 106 static LIST_HEAD(, ng_btsocket_sco_pcb) ng_btsocket_sco_sockets; 107 static LIST_HEAD(, ng_btsocket_sco_rtentry) ng_btsocket_sco_rt; 108 static struct mtx ng_btsocket_sco_rt_mtx; 109 static struct task ng_btsocket_sco_rt_task; 110 static struct timeval ng_btsocket_sco_lasttime; 111 static int ng_btsocket_sco_curpps; 112 113 /* Sysctl tree */ 114 SYSCTL_DECL(_net_bluetooth_sco_sockets); 115 static SYSCTL_NODE(_net_bluetooth_sco_sockets, OID_AUTO, seq, 116 CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 117 "Bluetooth SEQPACKET SCO sockets family"); 118 SYSCTL_UINT(_net_bluetooth_sco_sockets_seq, OID_AUTO, debug_level, 119 CTLFLAG_RW, 120 &ng_btsocket_sco_debug_level, NG_BTSOCKET_WARN_LEVEL, 121 "Bluetooth SEQPACKET SCO sockets debug level"); 122 SYSCTL_UINT(_net_bluetooth_sco_sockets_seq, OID_AUTO, queue_len, 123 CTLFLAG_RD, 124 &ng_btsocket_sco_queue.len, 0, 125 "Bluetooth SEQPACKET SCO sockets input queue length"); 126 SYSCTL_UINT(_net_bluetooth_sco_sockets_seq, OID_AUTO, queue_maxlen, 127 CTLFLAG_RD, 128 &ng_btsocket_sco_queue.maxlen, 0, 129 "Bluetooth SEQPACKET SCO sockets input queue max. length"); 130 SYSCTL_UINT(_net_bluetooth_sco_sockets_seq, OID_AUTO, queue_drops, 131 CTLFLAG_RD, 132 &ng_btsocket_sco_queue.drops, 0, 133 "Bluetooth SEQPACKET SCO sockets input queue drops"); 134 135 /* Debug */ 136 #define NG_BTSOCKET_SCO_INFO \ 137 if (ng_btsocket_sco_debug_level >= NG_BTSOCKET_INFO_LEVEL && \ 138 ppsratecheck(&ng_btsocket_sco_lasttime, &ng_btsocket_sco_curpps, 1)) \ 139 printf 140 141 #define NG_BTSOCKET_SCO_WARN \ 142 if (ng_btsocket_sco_debug_level >= NG_BTSOCKET_WARN_LEVEL && \ 143 ppsratecheck(&ng_btsocket_sco_lasttime, &ng_btsocket_sco_curpps, 1)) \ 144 printf 145 146 #define NG_BTSOCKET_SCO_ERR \ 147 if (ng_btsocket_sco_debug_level >= NG_BTSOCKET_ERR_LEVEL && \ 148 ppsratecheck(&ng_btsocket_sco_lasttime, &ng_btsocket_sco_curpps, 1)) \ 149 printf 150 151 #define NG_BTSOCKET_SCO_ALERT \ 152 if (ng_btsocket_sco_debug_level >= NG_BTSOCKET_ALERT_LEVEL && \ 153 ppsratecheck(&ng_btsocket_sco_lasttime, &ng_btsocket_sco_curpps, 1)) \ 154 printf 155 156 /* 157 * Netgraph message processing routines 158 */ 159 160 static int ng_btsocket_sco_process_lp_con_cfm 161 (struct ng_mesg *, ng_btsocket_sco_rtentry_p); 162 static int ng_btsocket_sco_process_lp_con_ind 163 (struct ng_mesg *, ng_btsocket_sco_rtentry_p); 164 static int ng_btsocket_sco_process_lp_discon_ind 165 (struct ng_mesg *, ng_btsocket_sco_rtentry_p); 166 167 /* 168 * Send LP messages to the lower layer 169 */ 170 171 static int ng_btsocket_sco_send_lp_con_req 172 (ng_btsocket_sco_pcb_p); 173 static int ng_btsocket_sco_send_lp_con_rsp 174 (ng_btsocket_sco_rtentry_p, bdaddr_p, int); 175 static int ng_btsocket_sco_send_lp_discon_req 176 (ng_btsocket_sco_pcb_p); 177 178 static int ng_btsocket_sco_send2 179 (ng_btsocket_sco_pcb_p); 180 181 /* 182 * Timeout processing routines 183 */ 184 185 static void ng_btsocket_sco_timeout (ng_btsocket_sco_pcb_p); 186 static void ng_btsocket_sco_untimeout (ng_btsocket_sco_pcb_p); 187 static void ng_btsocket_sco_process_timeout (void *); 188 189 /* 190 * Other stuff 191 */ 192 193 static ng_btsocket_sco_pcb_p ng_btsocket_sco_pcb_by_addr(bdaddr_p); 194 static ng_btsocket_sco_pcb_p ng_btsocket_sco_pcb_by_handle(bdaddr_p, int); 195 static ng_btsocket_sco_pcb_p ng_btsocket_sco_pcb_by_addrs(bdaddr_p, bdaddr_p); 196 197 #define ng_btsocket_sco_wakeup_input_task() \ 198 taskqueue_enqueue(taskqueue_swi, &ng_btsocket_sco_queue_task) 199 200 #define ng_btsocket_sco_wakeup_route_task() \ 201 taskqueue_enqueue(taskqueue_swi, &ng_btsocket_sco_rt_task) 202 203 /***************************************************************************** 204 ***************************************************************************** 205 ** Netgraph node interface 206 ***************************************************************************** 207 *****************************************************************************/ 208 209 /* 210 * Netgraph node constructor. Do not allow to create node of this type. 211 */ 212 213 static int 214 ng_btsocket_sco_node_constructor(node_p node) 215 { 216 return (EINVAL); 217 } /* ng_btsocket_sco_node_constructor */ 218 219 /* 220 * Do local shutdown processing. Let old node go and create new fresh one. 221 */ 222 223 static int 224 ng_btsocket_sco_node_shutdown(node_p node) 225 { 226 int error = 0; 227 228 NG_NODE_UNREF(node); 229 230 /* Create new node */ 231 error = ng_make_node_common(&typestruct, &ng_btsocket_sco_node); 232 if (error != 0) { 233 NG_BTSOCKET_SCO_ALERT( 234 "%s: Could not create Netgraph node, error=%d\n", __func__, error); 235 236 ng_btsocket_sco_node = NULL; 237 238 return (error); 239 } 240 241 error = ng_name_node(ng_btsocket_sco_node, 242 NG_BTSOCKET_SCO_NODE_TYPE); 243 if (error != 0) { 244 NG_BTSOCKET_SCO_ALERT( 245 "%s: Could not name Netgraph node, error=%d\n", __func__, error); 246 247 NG_NODE_UNREF(ng_btsocket_sco_node); 248 ng_btsocket_sco_node = NULL; 249 250 return (error); 251 } 252 253 return (0); 254 } /* ng_btsocket_sco_node_shutdown */ 255 256 /* 257 * We allow any hook to be connected to the node. 258 */ 259 260 static int 261 ng_btsocket_sco_node_newhook(node_p node, hook_p hook, char const *name) 262 { 263 return (0); 264 } /* ng_btsocket_sco_node_newhook */ 265 266 /* 267 * Just say "YEP, that's OK by me!" 268 */ 269 270 static int 271 ng_btsocket_sco_node_connect(hook_p hook) 272 { 273 NG_HOOK_SET_PRIVATE(hook, NULL); 274 NG_HOOK_REF(hook); /* Keep extra reference to the hook */ 275 276 #if 0 277 NG_HOOK_FORCE_QUEUE(NG_HOOK_PEER(hook)); 278 NG_HOOK_FORCE_QUEUE(hook); 279 #endif 280 281 return (0); 282 } /* ng_btsocket_sco_node_connect */ 283 284 /* 285 * Hook disconnection. Schedule route cleanup task 286 */ 287 288 static int 289 ng_btsocket_sco_node_disconnect(hook_p hook) 290 { 291 /* 292 * If hook has private information than we must have this hook in 293 * the routing table and must schedule cleaning for the routing table. 294 * Otherwise hook was connected but we never got "hook_info" message, 295 * so we have never added this hook to the routing table and it save 296 * to just delete it. 297 */ 298 299 if (NG_HOOK_PRIVATE(hook) != NULL) 300 return (ng_btsocket_sco_wakeup_route_task()); 301 302 NG_HOOK_UNREF(hook); /* Remove extra reference */ 303 304 return (0); 305 } /* ng_btsocket_sco_node_disconnect */ 306 307 /* 308 * Process incoming messages 309 */ 310 311 static int 312 ng_btsocket_sco_node_rcvmsg(node_p node, item_p item, hook_p hook) 313 { 314 struct ng_mesg *msg = NGI_MSG(item); /* item still has message */ 315 int error = 0; 316 317 if (msg != NULL && msg->header.typecookie == NGM_HCI_COOKIE) { 318 mtx_lock(&ng_btsocket_sco_queue_mtx); 319 if (NG_BT_ITEMQ_FULL(&ng_btsocket_sco_queue)) { 320 NG_BTSOCKET_SCO_ERR( 321 "%s: Input queue is full (msg)\n", __func__); 322 323 NG_BT_ITEMQ_DROP(&ng_btsocket_sco_queue); 324 NG_FREE_ITEM(item); 325 error = ENOBUFS; 326 } else { 327 if (hook != NULL) { 328 NG_HOOK_REF(hook); 329 NGI_SET_HOOK(item, hook); 330 } 331 332 NG_BT_ITEMQ_ENQUEUE(&ng_btsocket_sco_queue, item); 333 error = ng_btsocket_sco_wakeup_input_task(); 334 } 335 mtx_unlock(&ng_btsocket_sco_queue_mtx); 336 } else { 337 NG_FREE_ITEM(item); 338 error = EINVAL; 339 } 340 341 return (error); 342 } /* ng_btsocket_sco_node_rcvmsg */ 343 344 /* 345 * Receive data on a hook 346 */ 347 348 static int 349 ng_btsocket_sco_node_rcvdata(hook_p hook, item_p item) 350 { 351 int error = 0; 352 353 mtx_lock(&ng_btsocket_sco_queue_mtx); 354 if (NG_BT_ITEMQ_FULL(&ng_btsocket_sco_queue)) { 355 NG_BTSOCKET_SCO_ERR( 356 "%s: Input queue is full (data)\n", __func__); 357 358 NG_BT_ITEMQ_DROP(&ng_btsocket_sco_queue); 359 NG_FREE_ITEM(item); 360 error = ENOBUFS; 361 } else { 362 NG_HOOK_REF(hook); 363 NGI_SET_HOOK(item, hook); 364 365 NG_BT_ITEMQ_ENQUEUE(&ng_btsocket_sco_queue, item); 366 error = ng_btsocket_sco_wakeup_input_task(); 367 } 368 mtx_unlock(&ng_btsocket_sco_queue_mtx); 369 370 return (error); 371 } /* ng_btsocket_sco_node_rcvdata */ 372 373 /* 374 * Process LP_ConnectCfm event from the lower layer protocol 375 */ 376 377 static int 378 ng_btsocket_sco_process_lp_con_cfm(struct ng_mesg *msg, 379 ng_btsocket_sco_rtentry_p rt) 380 { 381 ng_hci_lp_con_cfm_ep *ep = NULL; 382 ng_btsocket_sco_pcb_t *pcb = NULL; 383 int error = 0; 384 385 if (msg->header.arglen != sizeof(*ep)) 386 return (EMSGSIZE); 387 388 ep = (ng_hci_lp_con_cfm_ep *)(msg->data); 389 390 mtx_lock(&ng_btsocket_sco_sockets_mtx); 391 392 /* Look for the socket with the token */ 393 pcb = ng_btsocket_sco_pcb_by_addrs(&rt->src, &ep->bdaddr); 394 if (pcb == NULL) { 395 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 396 return (ENOENT); 397 } 398 399 /* pcb is locked */ 400 401 NG_BTSOCKET_SCO_INFO( 402 "%s: Got LP_ConnectCfm response, src bdaddr=%x:%x:%x:%x:%x:%x, " \ 403 "dst bdaddr=%x:%x:%x:%x:%x:%x, status=%d, handle=%d, state=%d\n", 404 __func__, 405 pcb->src.b[5], pcb->src.b[4], pcb->src.b[3], 406 pcb->src.b[2], pcb->src.b[1], pcb->src.b[0], 407 pcb->dst.b[5], pcb->dst.b[4], pcb->dst.b[3], 408 pcb->dst.b[2], pcb->dst.b[1], pcb->dst.b[0], 409 ep->status, ep->con_handle, pcb->state); 410 411 if (pcb->state != NG_BTSOCKET_SCO_CONNECTING) { 412 mtx_unlock(&pcb->pcb_mtx); 413 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 414 415 return (ENOENT); 416 } 417 418 ng_btsocket_sco_untimeout(pcb); 419 420 if (ep->status == 0) { 421 /* 422 * Connection is open. Update connection handle and 423 * socket state 424 */ 425 426 pcb->con_handle = ep->con_handle; 427 pcb->state = NG_BTSOCKET_SCO_OPEN; 428 soisconnected(pcb->so); 429 } else { 430 /* 431 * We have failed to open connection, so disconnect the socket 432 */ 433 434 pcb->so->so_error = ECONNREFUSED; /* XXX convert status ??? */ 435 pcb->state = NG_BTSOCKET_SCO_CLOSED; 436 soisdisconnected(pcb->so); 437 } 438 439 mtx_unlock(&pcb->pcb_mtx); 440 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 441 442 return (error); 443 } /* ng_btsocket_sco_process_lp_con_cfm */ 444 445 /* 446 * Process LP_ConnectInd indicator. Find socket that listens on address. 447 * Find exact or closest match. 448 */ 449 450 static int 451 ng_btsocket_sco_process_lp_con_ind(struct ng_mesg *msg, 452 ng_btsocket_sco_rtentry_p rt) 453 { 454 ng_hci_lp_con_ind_ep *ep = NULL; 455 ng_btsocket_sco_pcb_t *pcb = NULL, *pcb1 = NULL; 456 int error = 0; 457 u_int16_t status = 0; 458 459 if (msg->header.arglen != sizeof(*ep)) 460 return (EMSGSIZE); 461 462 ep = (ng_hci_lp_con_ind_ep *)(msg->data); 463 464 NG_BTSOCKET_SCO_INFO( 465 "%s: Got LP_ConnectInd indicator, src bdaddr=%x:%x:%x:%x:%x:%x, " \ 466 "dst bdaddr=%x:%x:%x:%x:%x:%x\n", 467 __func__, 468 rt->src.b[5], rt->src.b[4], rt->src.b[3], 469 rt->src.b[2], rt->src.b[1], rt->src.b[0], 470 ep->bdaddr.b[5], ep->bdaddr.b[4], ep->bdaddr.b[3], 471 ep->bdaddr.b[2], ep->bdaddr.b[1], ep->bdaddr.b[0]); 472 473 mtx_lock(&ng_btsocket_sco_sockets_mtx); 474 475 pcb = ng_btsocket_sco_pcb_by_addr(&rt->src); 476 if (pcb != NULL) { 477 struct socket *so1; 478 479 /* pcb is locked */ 480 481 CURVNET_SET(pcb->so->so_vnet); 482 so1 = sonewconn(pcb->so, 0); 483 CURVNET_RESTORE(); 484 485 if (so1 == NULL) { 486 status = 0x0d; /* Rejected due to limited resources */ 487 goto respond; 488 } 489 490 /* 491 * If we got here than we have created new socket. So complete 492 * connection. If we we listening on specific address then copy 493 * source address from listening socket, otherwise copy source 494 * address from hook's routing information. 495 */ 496 497 pcb1 = so2sco_pcb(so1); 498 KASSERT((pcb1 != NULL), 499 ("%s: pcb1 == NULL\n", __func__)); 500 501 mtx_lock(&pcb1->pcb_mtx); 502 503 if (bcmp(&pcb->src, NG_HCI_BDADDR_ANY, sizeof(pcb->src)) != 0) 504 bcopy(&pcb->src, &pcb1->src, sizeof(pcb1->src)); 505 else 506 bcopy(&rt->src, &pcb1->src, sizeof(pcb1->src)); 507 508 pcb1->flags &= ~NG_BTSOCKET_SCO_CLIENT; 509 510 bcopy(&ep->bdaddr, &pcb1->dst, sizeof(pcb1->dst)); 511 pcb1->rt = rt; 512 } else 513 /* Nobody listens on requested BDADDR */ 514 status = 0x1f; /* Unspecified Error */ 515 516 respond: 517 error = ng_btsocket_sco_send_lp_con_rsp(rt, &ep->bdaddr, status); 518 if (pcb1 != NULL) { 519 if (error != 0) { 520 pcb1->so->so_error = error; 521 pcb1->state = NG_BTSOCKET_SCO_CLOSED; 522 soisdisconnected(pcb1->so); 523 } else { 524 pcb1->state = NG_BTSOCKET_SCO_CONNECTING; 525 soisconnecting(pcb1->so); 526 527 ng_btsocket_sco_timeout(pcb1); 528 } 529 530 mtx_unlock(&pcb1->pcb_mtx); 531 } 532 533 if (pcb != NULL) 534 mtx_unlock(&pcb->pcb_mtx); 535 536 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 537 538 return (error); 539 } /* ng_btsocket_sco_process_lp_con_ind */ 540 541 /* 542 * Process LP_DisconnectInd indicator 543 */ 544 545 static int 546 ng_btsocket_sco_process_lp_discon_ind(struct ng_mesg *msg, 547 ng_btsocket_sco_rtentry_p rt) 548 { 549 ng_hci_lp_discon_ind_ep *ep = NULL; 550 ng_btsocket_sco_pcb_t *pcb = NULL; 551 552 /* Check message */ 553 if (msg->header.arglen != sizeof(*ep)) 554 return (EMSGSIZE); 555 556 ep = (ng_hci_lp_discon_ind_ep *)(msg->data); 557 558 mtx_lock(&ng_btsocket_sco_sockets_mtx); 559 560 /* Look for the socket with given channel ID */ 561 pcb = ng_btsocket_sco_pcb_by_handle(&rt->src, ep->con_handle); 562 if (pcb == NULL) { 563 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 564 return (0); 565 } 566 567 /* 568 * Disconnect the socket. If there was any pending request we can 569 * not do anything here anyway. 570 */ 571 572 /* pcb is locked */ 573 574 NG_BTSOCKET_SCO_INFO( 575 "%s: Got LP_DisconnectInd indicator, src bdaddr=%x:%x:%x:%x:%x:%x, " \ 576 "dst bdaddr=%x:%x:%x:%x:%x:%x, handle=%d, state=%d\n", 577 __func__, 578 pcb->src.b[5], pcb->src.b[4], pcb->src.b[3], 579 pcb->src.b[2], pcb->src.b[1], pcb->src.b[0], 580 pcb->dst.b[5], pcb->dst.b[4], pcb->dst.b[3], 581 pcb->dst.b[2], pcb->dst.b[1], pcb->dst.b[0], 582 pcb->con_handle, pcb->state); 583 584 if (pcb->flags & NG_BTSOCKET_SCO_TIMO) 585 ng_btsocket_sco_untimeout(pcb); 586 587 pcb->state = NG_BTSOCKET_SCO_CLOSED; 588 soisdisconnected(pcb->so); 589 590 mtx_unlock(&pcb->pcb_mtx); 591 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 592 593 return (0); 594 } /* ng_btsocket_sco_process_lp_discon_ind */ 595 596 /* 597 * Send LP_ConnectReq request 598 */ 599 600 static int 601 ng_btsocket_sco_send_lp_con_req(ng_btsocket_sco_pcb_p pcb) 602 { 603 struct ng_mesg *msg = NULL; 604 ng_hci_lp_con_req_ep *ep = NULL; 605 int error = 0; 606 607 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 608 609 if (pcb->rt == NULL || 610 pcb->rt->hook == NULL || NG_HOOK_NOT_VALID(pcb->rt->hook)) 611 return (ENETDOWN); 612 613 NG_MKMESSAGE(msg, NGM_HCI_COOKIE, NGM_HCI_LP_CON_REQ, 614 sizeof(*ep), M_NOWAIT); 615 if (msg == NULL) 616 return (ENOMEM); 617 618 ep = (ng_hci_lp_con_req_ep *)(msg->data); 619 ep->link_type = NG_HCI_LINK_SCO; 620 bcopy(&pcb->dst, &ep->bdaddr, sizeof(ep->bdaddr)); 621 622 NG_SEND_MSG_HOOK(error, ng_btsocket_sco_node, msg, pcb->rt->hook, 0); 623 624 return (error); 625 } /* ng_btsocket_sco_send_lp_con_req */ 626 627 /* 628 * Send LP_ConnectRsp response 629 */ 630 631 static int 632 ng_btsocket_sco_send_lp_con_rsp(ng_btsocket_sco_rtentry_p rt, bdaddr_p dst, int status) 633 { 634 struct ng_mesg *msg = NULL; 635 ng_hci_lp_con_rsp_ep *ep = NULL; 636 int error = 0; 637 638 if (rt == NULL || rt->hook == NULL || NG_HOOK_NOT_VALID(rt->hook)) 639 return (ENETDOWN); 640 641 NG_MKMESSAGE(msg, NGM_HCI_COOKIE, NGM_HCI_LP_CON_RSP, 642 sizeof(*ep), M_NOWAIT); 643 if (msg == NULL) 644 return (ENOMEM); 645 646 ep = (ng_hci_lp_con_rsp_ep *)(msg->data); 647 ep->status = status; 648 ep->link_type = NG_HCI_LINK_SCO; 649 bcopy(dst, &ep->bdaddr, sizeof(ep->bdaddr)); 650 651 NG_SEND_MSG_HOOK(error, ng_btsocket_sco_node, msg, rt->hook, 0); 652 653 return (error); 654 } /* ng_btsocket_sco_send_lp_con_rsp */ 655 656 /* 657 * Send LP_DisconReq request 658 */ 659 660 static int 661 ng_btsocket_sco_send_lp_discon_req(ng_btsocket_sco_pcb_p pcb) 662 { 663 struct ng_mesg *msg = NULL; 664 ng_hci_lp_discon_req_ep *ep = NULL; 665 int error = 0; 666 667 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 668 669 if (pcb->rt == NULL || 670 pcb->rt->hook == NULL || NG_HOOK_NOT_VALID(pcb->rt->hook)) 671 return (ENETDOWN); 672 673 NG_MKMESSAGE(msg, NGM_HCI_COOKIE, NGM_HCI_LP_DISCON_REQ, 674 sizeof(*ep), M_NOWAIT); 675 if (msg == NULL) 676 return (ENOMEM); 677 678 ep = (ng_hci_lp_discon_req_ep *)(msg->data); 679 ep->con_handle = pcb->con_handle; 680 ep->reason = 0x13; /* User Ended Connection */ 681 682 NG_SEND_MSG_HOOK(error, ng_btsocket_sco_node, msg, pcb->rt->hook, 0); 683 684 return (error); 685 } /* ng_btsocket_sco_send_lp_discon_req */ 686 687 /***************************************************************************** 688 ***************************************************************************** 689 ** Socket interface 690 ***************************************************************************** 691 *****************************************************************************/ 692 693 /* 694 * SCO sockets data input routine 695 */ 696 697 static void 698 ng_btsocket_sco_data_input(struct mbuf *m, hook_p hook) 699 { 700 ng_hci_scodata_pkt_t *hdr = NULL; 701 ng_btsocket_sco_pcb_t *pcb = NULL; 702 ng_btsocket_sco_rtentry_t *rt = NULL; 703 u_int16_t con_handle; 704 705 if (hook == NULL) { 706 NG_BTSOCKET_SCO_ALERT( 707 "%s: Invalid source hook for SCO data packet\n", __func__); 708 goto drop; 709 } 710 711 rt = (ng_btsocket_sco_rtentry_t *) NG_HOOK_PRIVATE(hook); 712 if (rt == NULL) { 713 NG_BTSOCKET_SCO_ALERT( 714 "%s: Could not find out source bdaddr for SCO data packet\n", __func__); 715 goto drop; 716 } 717 718 /* Make sure we can access header */ 719 if (m->m_pkthdr.len < sizeof(*hdr)) { 720 NG_BTSOCKET_SCO_ERR( 721 "%s: SCO data packet too small, len=%d\n", __func__, m->m_pkthdr.len); 722 goto drop; 723 } 724 725 if (m->m_len < sizeof(*hdr)) { 726 m = m_pullup(m, sizeof(*hdr)); 727 if (m == NULL) 728 goto drop; 729 } 730 731 /* Strip SCO packet header and verify packet length */ 732 hdr = mtod(m, ng_hci_scodata_pkt_t *); 733 m_adj(m, sizeof(*hdr)); 734 735 if (hdr->length != m->m_pkthdr.len) { 736 NG_BTSOCKET_SCO_ERR( 737 "%s: Bad SCO data packet length, len=%d, length=%d\n", 738 __func__, m->m_pkthdr.len, hdr->length); 739 goto drop; 740 } 741 742 /* 743 * Now process packet 744 */ 745 746 con_handle = NG_HCI_CON_HANDLE(le16toh(hdr->con_handle)); 747 748 NG_BTSOCKET_SCO_INFO( 749 "%s: Received SCO data packet: src bdaddr=%x:%x:%x:%x:%x:%x, handle=%d, " \ 750 "length=%d\n", __func__, 751 rt->src.b[5], rt->src.b[4], rt->src.b[3], 752 rt->src.b[2], rt->src.b[1], rt->src.b[0], 753 con_handle, hdr->length); 754 755 mtx_lock(&ng_btsocket_sco_sockets_mtx); 756 757 /* Find socket */ 758 pcb = ng_btsocket_sco_pcb_by_handle(&rt->src, con_handle); 759 if (pcb == NULL) { 760 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 761 goto drop; 762 } 763 764 /* pcb is locked */ 765 766 if (pcb->state != NG_BTSOCKET_SCO_OPEN) { 767 NG_BTSOCKET_SCO_ERR( 768 "%s: No connected socket found, src bdaddr=%x:%x:%x:%x:%x:%x, state=%d\n", 769 __func__, 770 rt->src.b[5], rt->src.b[4], rt->src.b[3], 771 rt->src.b[2], rt->src.b[1], rt->src.b[0], 772 pcb->state); 773 774 mtx_unlock(&pcb->pcb_mtx); 775 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 776 goto drop; 777 } 778 779 /* Check if we have enough space in socket receive queue */ 780 if (m->m_pkthdr.len > sbspace(&pcb->so->so_rcv)) { 781 NG_BTSOCKET_SCO_ERR( 782 "%s: Not enough space in socket receive queue. Dropping SCO data packet, " \ 783 "src bdaddr=%x:%x:%x:%x:%x:%x, len=%d, space=%ld\n", 784 __func__, 785 rt->src.b[5], rt->src.b[4], rt->src.b[3], 786 rt->src.b[2], rt->src.b[1], rt->src.b[0], 787 m->m_pkthdr.len, 788 sbspace(&pcb->so->so_rcv)); 789 790 mtx_unlock(&pcb->pcb_mtx); 791 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 792 goto drop; 793 } 794 795 /* Append packet to the socket receive queue and wakeup */ 796 sbappendrecord(&pcb->so->so_rcv, m); 797 m = NULL; 798 799 sorwakeup(pcb->so); 800 801 mtx_unlock(&pcb->pcb_mtx); 802 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 803 drop: 804 NG_FREE_M(m); /* checks for m != NULL */ 805 } /* ng_btsocket_sco_data_input */ 806 807 /* 808 * SCO sockets default message input routine 809 */ 810 811 static void 812 ng_btsocket_sco_default_msg_input(struct ng_mesg *msg, hook_p hook) 813 { 814 ng_btsocket_sco_rtentry_t *rt = NULL; 815 816 if (hook == NULL || NG_HOOK_NOT_VALID(hook)) 817 return; 818 819 rt = (ng_btsocket_sco_rtentry_t *) NG_HOOK_PRIVATE(hook); 820 821 switch (msg->header.cmd) { 822 case NGM_HCI_NODE_UP: { 823 ng_hci_node_up_ep *ep = NULL; 824 825 if (msg->header.arglen != sizeof(*ep)) 826 break; 827 828 ep = (ng_hci_node_up_ep *)(msg->data); 829 if (bcmp(&ep->bdaddr, NG_HCI_BDADDR_ANY, sizeof(bdaddr_t)) == 0) 830 break; 831 832 if (rt == NULL) { 833 rt = malloc(sizeof(*rt), 834 M_NETGRAPH_BTSOCKET_SCO, M_NOWAIT|M_ZERO); 835 if (rt == NULL) 836 break; 837 838 NG_HOOK_SET_PRIVATE(hook, rt); 839 840 mtx_lock(&ng_btsocket_sco_rt_mtx); 841 842 LIST_INSERT_HEAD(&ng_btsocket_sco_rt, rt, next); 843 } else 844 mtx_lock(&ng_btsocket_sco_rt_mtx); 845 846 bcopy(&ep->bdaddr, &rt->src, sizeof(rt->src)); 847 rt->pkt_size = (ep->pkt_size == 0)? 60 : ep->pkt_size; 848 rt->num_pkts = ep->num_pkts; 849 rt->hook = hook; 850 851 mtx_unlock(&ng_btsocket_sco_rt_mtx); 852 853 NG_BTSOCKET_SCO_INFO( 854 "%s: Updating hook \"%s\", src bdaddr=%x:%x:%x:%x:%x:%x, pkt_size=%d, " \ 855 "num_pkts=%d\n", __func__, NG_HOOK_NAME(hook), 856 rt->src.b[5], rt->src.b[4], rt->src.b[3], 857 rt->src.b[2], rt->src.b[1], rt->src.b[0], 858 rt->pkt_size, rt->num_pkts); 859 } break; 860 861 case NGM_HCI_SYNC_CON_QUEUE: { 862 ng_hci_sync_con_queue_ep *ep = NULL; 863 ng_btsocket_sco_pcb_t *pcb = NULL; 864 865 if (rt == NULL || msg->header.arglen != sizeof(*ep)) 866 break; 867 868 ep = (ng_hci_sync_con_queue_ep *)(msg->data); 869 870 rt->pending -= ep->completed; 871 if (rt->pending < 0) { 872 NG_BTSOCKET_SCO_WARN( 873 "%s: Pending packet counter is out of sync! bdaddr=%x:%x:%x:%x:%x:%x, " \ 874 "handle=%d, pending=%d, completed=%d\n", 875 __func__, 876 rt->src.b[5], rt->src.b[4], rt->src.b[3], 877 rt->src.b[2], rt->src.b[1], rt->src.b[0], 878 ep->con_handle, rt->pending, 879 ep->completed); 880 881 rt->pending = 0; 882 } 883 884 mtx_lock(&ng_btsocket_sco_sockets_mtx); 885 886 /* Find socket */ 887 pcb = ng_btsocket_sco_pcb_by_handle(&rt->src, ep->con_handle); 888 if (pcb == NULL) { 889 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 890 break; 891 } 892 893 /* pcb is locked */ 894 895 /* Check state */ 896 if (pcb->state == NG_BTSOCKET_SCO_OPEN) { 897 /* Remove timeout */ 898 ng_btsocket_sco_untimeout(pcb); 899 900 /* Drop completed packets from the send queue */ 901 for (; ep->completed > 0; ep->completed --) 902 sbdroprecord(&pcb->so->so_snd); 903 904 /* Send more if we have any */ 905 if (sbavail(&pcb->so->so_snd) > 0) 906 if (ng_btsocket_sco_send2(pcb) == 0) 907 ng_btsocket_sco_timeout(pcb); 908 909 /* Wake up writers */ 910 sowwakeup(pcb->so); 911 } 912 913 mtx_unlock(&pcb->pcb_mtx); 914 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 915 } break; 916 917 default: 918 NG_BTSOCKET_SCO_WARN( 919 "%s: Unknown message, cmd=%d\n", __func__, msg->header.cmd); 920 break; 921 } 922 923 NG_FREE_MSG(msg); /* Checks for msg != NULL */ 924 } /* ng_btsocket_sco_default_msg_input */ 925 926 /* 927 * SCO sockets LP message input routine 928 */ 929 930 static void 931 ng_btsocket_sco_lp_msg_input(struct ng_mesg *msg, hook_p hook) 932 { 933 ng_btsocket_sco_rtentry_p rt = NULL; 934 935 if (hook == NULL) { 936 NG_BTSOCKET_SCO_ALERT( 937 "%s: Invalid source hook for LP message\n", __func__); 938 goto drop; 939 } 940 941 rt = (ng_btsocket_sco_rtentry_p) NG_HOOK_PRIVATE(hook); 942 if (rt == NULL) { 943 NG_BTSOCKET_SCO_ALERT( 944 "%s: Could not find out source bdaddr for LP message\n", __func__); 945 goto drop; 946 } 947 948 switch (msg->header.cmd) { 949 case NGM_HCI_LP_CON_CFM: /* Connection Confirmation Event */ 950 ng_btsocket_sco_process_lp_con_cfm(msg, rt); 951 break; 952 953 case NGM_HCI_LP_CON_IND: /* Connection Indication Event */ 954 ng_btsocket_sco_process_lp_con_ind(msg, rt); 955 break; 956 957 case NGM_HCI_LP_DISCON_IND: /* Disconnection Indication Event */ 958 ng_btsocket_sco_process_lp_discon_ind(msg, rt); 959 break; 960 961 /* XXX FIXME add other LP messages */ 962 963 default: 964 NG_BTSOCKET_SCO_WARN( 965 "%s: Unknown LP message, cmd=%d\n", __func__, msg->header.cmd); 966 break; 967 } 968 drop: 969 NG_FREE_MSG(msg); 970 } /* ng_btsocket_sco_lp_msg_input */ 971 972 /* 973 * SCO sockets input routine 974 */ 975 976 static void 977 ng_btsocket_sco_input(void *context, int pending) 978 { 979 item_p item = NULL; 980 hook_p hook = NULL; 981 982 for (;;) { 983 mtx_lock(&ng_btsocket_sco_queue_mtx); 984 NG_BT_ITEMQ_DEQUEUE(&ng_btsocket_sco_queue, item); 985 mtx_unlock(&ng_btsocket_sco_queue_mtx); 986 987 if (item == NULL) 988 break; 989 990 NGI_GET_HOOK(item, hook); 991 if (hook != NULL && NG_HOOK_NOT_VALID(hook)) 992 goto drop; 993 994 switch(item->el_flags & NGQF_TYPE) { 995 case NGQF_DATA: { 996 struct mbuf *m = NULL; 997 998 NGI_GET_M(item, m); 999 ng_btsocket_sco_data_input(m, hook); 1000 } break; 1001 1002 case NGQF_MESG: { 1003 struct ng_mesg *msg = NULL; 1004 1005 NGI_GET_MSG(item, msg); 1006 1007 switch (msg->header.cmd) { 1008 case NGM_HCI_LP_CON_CFM: 1009 case NGM_HCI_LP_CON_IND: 1010 case NGM_HCI_LP_DISCON_IND: 1011 /* XXX FIXME add other LP messages */ 1012 ng_btsocket_sco_lp_msg_input(msg, hook); 1013 break; 1014 1015 default: 1016 ng_btsocket_sco_default_msg_input(msg, hook); 1017 break; 1018 } 1019 } break; 1020 1021 default: 1022 KASSERT(0, 1023 ("%s: invalid item type=%ld\n", __func__, (item->el_flags & NGQF_TYPE))); 1024 break; 1025 } 1026 drop: 1027 if (hook != NULL) 1028 NG_HOOK_UNREF(hook); 1029 1030 NG_FREE_ITEM(item); 1031 } 1032 } /* ng_btsocket_sco_input */ 1033 1034 /* 1035 * Route cleanup task. Gets scheduled when hook is disconnected. Here we 1036 * will find all sockets that use "invalid" hook and disconnect them. 1037 */ 1038 1039 static void 1040 ng_btsocket_sco_rtclean(void *context, int pending) 1041 { 1042 ng_btsocket_sco_pcb_p pcb = NULL, pcb_next = NULL; 1043 ng_btsocket_sco_rtentry_p rt = NULL; 1044 1045 /* 1046 * First disconnect all sockets that use "invalid" hook 1047 */ 1048 1049 mtx_lock(&ng_btsocket_sco_sockets_mtx); 1050 1051 for(pcb = LIST_FIRST(&ng_btsocket_sco_sockets); pcb != NULL; ) { 1052 mtx_lock(&pcb->pcb_mtx); 1053 pcb_next = LIST_NEXT(pcb, next); 1054 1055 if (pcb->rt != NULL && 1056 pcb->rt->hook != NULL && NG_HOOK_NOT_VALID(pcb->rt->hook)) { 1057 if (pcb->flags & NG_BTSOCKET_SCO_TIMO) 1058 ng_btsocket_sco_untimeout(pcb); 1059 1060 pcb->rt = NULL; 1061 pcb->so->so_error = ENETDOWN; 1062 pcb->state = NG_BTSOCKET_SCO_CLOSED; 1063 soisdisconnected(pcb->so); 1064 } 1065 1066 mtx_unlock(&pcb->pcb_mtx); 1067 pcb = pcb_next; 1068 } 1069 1070 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 1071 1072 /* 1073 * Now cleanup routing table 1074 */ 1075 1076 mtx_lock(&ng_btsocket_sco_rt_mtx); 1077 1078 for (rt = LIST_FIRST(&ng_btsocket_sco_rt); rt != NULL; ) { 1079 ng_btsocket_sco_rtentry_p rt_next = LIST_NEXT(rt, next); 1080 1081 if (rt->hook != NULL && NG_HOOK_NOT_VALID(rt->hook)) { 1082 LIST_REMOVE(rt, next); 1083 1084 NG_HOOK_SET_PRIVATE(rt->hook, NULL); 1085 NG_HOOK_UNREF(rt->hook); /* Remove extra reference */ 1086 1087 bzero(rt, sizeof(*rt)); 1088 free(rt, M_NETGRAPH_BTSOCKET_SCO); 1089 } 1090 1091 rt = rt_next; 1092 } 1093 1094 mtx_unlock(&ng_btsocket_sco_rt_mtx); 1095 } /* ng_btsocket_sco_rtclean */ 1096 1097 /* 1098 * Initialize everything 1099 */ 1100 1101 void 1102 ng_btsocket_sco_init(void) 1103 { 1104 int error = 0; 1105 1106 /* Skip initialization of globals for non-default instances. */ 1107 if (!IS_DEFAULT_VNET(curvnet)) 1108 return; 1109 1110 ng_btsocket_sco_node = NULL; 1111 ng_btsocket_sco_debug_level = NG_BTSOCKET_WARN_LEVEL; 1112 1113 /* Register Netgraph node type */ 1114 error = ng_newtype(&typestruct); 1115 if (error != 0) { 1116 NG_BTSOCKET_SCO_ALERT( 1117 "%s: Could not register Netgraph node type, error=%d\n", __func__, error); 1118 1119 return; 1120 } 1121 1122 /* Create Netgrapg node */ 1123 error = ng_make_node_common(&typestruct, &ng_btsocket_sco_node); 1124 if (error != 0) { 1125 NG_BTSOCKET_SCO_ALERT( 1126 "%s: Could not create Netgraph node, error=%d\n", __func__, error); 1127 1128 ng_btsocket_sco_node = NULL; 1129 1130 return; 1131 } 1132 1133 error = ng_name_node(ng_btsocket_sco_node, NG_BTSOCKET_SCO_NODE_TYPE); 1134 if (error != 0) { 1135 NG_BTSOCKET_SCO_ALERT( 1136 "%s: Could not name Netgraph node, error=%d\n", __func__, error); 1137 1138 NG_NODE_UNREF(ng_btsocket_sco_node); 1139 ng_btsocket_sco_node = NULL; 1140 1141 return; 1142 } 1143 1144 /* Create input queue */ 1145 NG_BT_ITEMQ_INIT(&ng_btsocket_sco_queue, 300); 1146 mtx_init(&ng_btsocket_sco_queue_mtx, 1147 "btsocks_sco_queue_mtx", NULL, MTX_DEF); 1148 TASK_INIT(&ng_btsocket_sco_queue_task, 0, 1149 ng_btsocket_sco_input, NULL); 1150 1151 /* Create list of sockets */ 1152 LIST_INIT(&ng_btsocket_sco_sockets); 1153 mtx_init(&ng_btsocket_sco_sockets_mtx, 1154 "btsocks_sco_sockets_mtx", NULL, MTX_DEF); 1155 1156 /* Routing table */ 1157 LIST_INIT(&ng_btsocket_sco_rt); 1158 mtx_init(&ng_btsocket_sco_rt_mtx, 1159 "btsocks_sco_rt_mtx", NULL, MTX_DEF); 1160 TASK_INIT(&ng_btsocket_sco_rt_task, 0, 1161 ng_btsocket_sco_rtclean, NULL); 1162 } /* ng_btsocket_sco_init */ 1163 1164 /* 1165 * Abort connection on socket 1166 */ 1167 1168 void 1169 ng_btsocket_sco_abort(struct socket *so) 1170 { 1171 so->so_error = ECONNABORTED; 1172 1173 (void) ng_btsocket_sco_disconnect(so); 1174 } /* ng_btsocket_sco_abort */ 1175 1176 void 1177 ng_btsocket_sco_close(struct socket *so) 1178 { 1179 (void) ng_btsocket_sco_disconnect(so); 1180 } /* ng_btsocket_sco_close */ 1181 1182 /* 1183 * Accept connection on socket. Nothing to do here, socket must be connected 1184 * and ready, so just return peer address and be done with it. 1185 */ 1186 1187 int 1188 ng_btsocket_sco_accept(struct socket *so, struct sockaddr **nam) 1189 { 1190 if (ng_btsocket_sco_node == NULL) 1191 return (EINVAL); 1192 1193 return (ng_btsocket_sco_peeraddr(so, nam)); 1194 } /* ng_btsocket_sco_accept */ 1195 1196 /* 1197 * Create and attach new socket 1198 */ 1199 1200 int 1201 ng_btsocket_sco_attach(struct socket *so, int proto, struct thread *td) 1202 { 1203 ng_btsocket_sco_pcb_p pcb = so2sco_pcb(so); 1204 int error; 1205 1206 /* Check socket and protocol */ 1207 if (ng_btsocket_sco_node == NULL) 1208 return (EPROTONOSUPPORT); 1209 if (so->so_type != SOCK_SEQPACKET) 1210 return (ESOCKTNOSUPPORT); 1211 1212 #if 0 /* XXX sonewconn() calls "pru_attach" with proto == 0 */ 1213 if (proto != 0) 1214 if (proto != BLUETOOTH_PROTO_SCO) 1215 return (EPROTONOSUPPORT); 1216 #endif /* XXX */ 1217 1218 if (pcb != NULL) 1219 return (EISCONN); 1220 1221 /* Reserve send and receive space if it is not reserved yet */ 1222 if ((so->so_snd.sb_hiwat == 0) || (so->so_rcv.sb_hiwat == 0)) { 1223 error = soreserve(so, NG_BTSOCKET_SCO_SENDSPACE, 1224 NG_BTSOCKET_SCO_RECVSPACE); 1225 if (error != 0) 1226 return (error); 1227 } 1228 1229 /* Allocate the PCB */ 1230 pcb = malloc(sizeof(*pcb), 1231 M_NETGRAPH_BTSOCKET_SCO, M_NOWAIT | M_ZERO); 1232 if (pcb == NULL) 1233 return (ENOMEM); 1234 1235 /* Link the PCB and the socket */ 1236 so->so_pcb = (caddr_t) pcb; 1237 pcb->so = so; 1238 pcb->state = NG_BTSOCKET_SCO_CLOSED; 1239 1240 callout_init(&pcb->timo, 1); 1241 1242 /* 1243 * Mark PCB mutex as DUPOK to prevent "duplicated lock of 1244 * the same type" message. When accepting new SCO connection 1245 * ng_btsocket_sco_process_lp_con_ind() holds both PCB mutexes 1246 * for "old" (accepting) PCB and "new" (created) PCB. 1247 */ 1248 1249 mtx_init(&pcb->pcb_mtx, "btsocks_sco_pcb_mtx", NULL, 1250 MTX_DEF|MTX_DUPOK); 1251 1252 /* 1253 * Add the PCB to the list 1254 * 1255 * XXX FIXME VERY IMPORTANT! 1256 * 1257 * This is totally FUBAR. We could get here in two cases: 1258 * 1259 * 1) When user calls socket() 1260 * 2) When we need to accept new incoming connection and call 1261 * sonewconn() 1262 * 1263 * In the first case we must acquire ng_btsocket_sco_sockets_mtx. 1264 * In the second case we hold ng_btsocket_sco_sockets_mtx already. 1265 * So we now need to distinguish between these cases. From reading 1266 * /sys/kern/uipc_socket2.c we can find out that sonewconn() calls 1267 * pru_attach with proto == 0 and td == NULL. For now use this fact 1268 * to figure out if we were called from socket() or from sonewconn(). 1269 */ 1270 1271 if (td != NULL) 1272 mtx_lock(&ng_btsocket_sco_sockets_mtx); 1273 else 1274 mtx_assert(&ng_btsocket_sco_sockets_mtx, MA_OWNED); 1275 1276 LIST_INSERT_HEAD(&ng_btsocket_sco_sockets, pcb, next); 1277 1278 if (td != NULL) 1279 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 1280 1281 return (0); 1282 } /* ng_btsocket_sco_attach */ 1283 1284 /* 1285 * Bind socket 1286 */ 1287 1288 int 1289 ng_btsocket_sco_bind(struct socket *so, struct sockaddr *nam, 1290 struct thread *td) 1291 { 1292 ng_btsocket_sco_pcb_t *pcb = NULL; 1293 struct sockaddr_sco *sa = (struct sockaddr_sco *) nam; 1294 1295 if (ng_btsocket_sco_node == NULL) 1296 return (EINVAL); 1297 1298 /* Verify address */ 1299 if (sa == NULL) 1300 return (EINVAL); 1301 if (sa->sco_family != AF_BLUETOOTH) 1302 return (EAFNOSUPPORT); 1303 if (sa->sco_len != sizeof(*sa)) 1304 return (EINVAL); 1305 1306 mtx_lock(&ng_btsocket_sco_sockets_mtx); 1307 1308 /* 1309 * Check if other socket has this address already (look for exact 1310 * match in bdaddr) and assign socket address if it's available. 1311 */ 1312 1313 if (bcmp(&sa->sco_bdaddr, NG_HCI_BDADDR_ANY, sizeof(sa->sco_bdaddr)) != 0) { 1314 LIST_FOREACH(pcb, &ng_btsocket_sco_sockets, next) { 1315 mtx_lock(&pcb->pcb_mtx); 1316 1317 if (bcmp(&pcb->src, &sa->sco_bdaddr, sizeof(bdaddr_t)) == 0) { 1318 mtx_unlock(&pcb->pcb_mtx); 1319 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 1320 1321 return (EADDRINUSE); 1322 } 1323 1324 mtx_unlock(&pcb->pcb_mtx); 1325 } 1326 } 1327 1328 pcb = so2sco_pcb(so); 1329 if (pcb == NULL) { 1330 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 1331 return (EINVAL); 1332 } 1333 1334 mtx_lock(&pcb->pcb_mtx); 1335 bcopy(&sa->sco_bdaddr, &pcb->src, sizeof(pcb->src)); 1336 mtx_unlock(&pcb->pcb_mtx); 1337 1338 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 1339 1340 return (0); 1341 } /* ng_btsocket_sco_bind */ 1342 1343 /* 1344 * Connect socket 1345 */ 1346 1347 int 1348 ng_btsocket_sco_connect(struct socket *so, struct sockaddr *nam, 1349 struct thread *td) 1350 { 1351 ng_btsocket_sco_pcb_t *pcb = so2sco_pcb(so); 1352 struct sockaddr_sco *sa = (struct sockaddr_sco *) nam; 1353 ng_btsocket_sco_rtentry_t *rt = NULL; 1354 int have_src, error = 0; 1355 1356 /* Check socket */ 1357 if (pcb == NULL) 1358 return (EINVAL); 1359 if (ng_btsocket_sco_node == NULL) 1360 return (EINVAL); 1361 1362 /* Verify address */ 1363 if (sa == NULL) 1364 return (EINVAL); 1365 if (sa->sco_family != AF_BLUETOOTH) 1366 return (EAFNOSUPPORT); 1367 if (sa->sco_len != sizeof(*sa)) 1368 return (EINVAL); 1369 if (bcmp(&sa->sco_bdaddr, NG_HCI_BDADDR_ANY, sizeof(bdaddr_t)) == 0) 1370 return (EDESTADDRREQ); 1371 1372 /* 1373 * Routing. Socket should be bound to some source address. The source 1374 * address can be ANY. Destination address must be set and it must not 1375 * be ANY. If source address is ANY then find first rtentry that has 1376 * src != dst. 1377 */ 1378 1379 mtx_lock(&ng_btsocket_sco_rt_mtx); 1380 mtx_lock(&pcb->pcb_mtx); 1381 1382 if (pcb->state == NG_BTSOCKET_SCO_CONNECTING) { 1383 mtx_unlock(&pcb->pcb_mtx); 1384 mtx_unlock(&ng_btsocket_sco_rt_mtx); 1385 1386 return (EINPROGRESS); 1387 } 1388 1389 if (bcmp(&sa->sco_bdaddr, &pcb->src, sizeof(pcb->src)) == 0) { 1390 mtx_unlock(&pcb->pcb_mtx); 1391 mtx_unlock(&ng_btsocket_sco_rt_mtx); 1392 1393 return (EINVAL); 1394 } 1395 1396 /* Send destination address and PSM */ 1397 bcopy(&sa->sco_bdaddr, &pcb->dst, sizeof(pcb->dst)); 1398 1399 pcb->rt = NULL; 1400 have_src = bcmp(&pcb->src, NG_HCI_BDADDR_ANY, sizeof(pcb->src)); 1401 1402 LIST_FOREACH(rt, &ng_btsocket_sco_rt, next) { 1403 if (rt->hook == NULL || NG_HOOK_NOT_VALID(rt->hook)) 1404 continue; 1405 1406 /* Match src and dst */ 1407 if (have_src) { 1408 if (bcmp(&pcb->src, &rt->src, sizeof(rt->src)) == 0) 1409 break; 1410 } else { 1411 if (bcmp(&pcb->dst, &rt->src, sizeof(rt->src)) != 0) 1412 break; 1413 } 1414 } 1415 1416 if (rt != NULL) { 1417 pcb->rt = rt; 1418 1419 if (!have_src) 1420 bcopy(&rt->src, &pcb->src, sizeof(pcb->src)); 1421 } else 1422 error = EHOSTUNREACH; 1423 1424 /* 1425 * Send LP_Connect request 1426 */ 1427 1428 if (error == 0) { 1429 error = ng_btsocket_sco_send_lp_con_req(pcb); 1430 if (error == 0) { 1431 pcb->flags |= NG_BTSOCKET_SCO_CLIENT; 1432 pcb->state = NG_BTSOCKET_SCO_CONNECTING; 1433 soisconnecting(pcb->so); 1434 1435 ng_btsocket_sco_timeout(pcb); 1436 } 1437 } 1438 1439 mtx_unlock(&pcb->pcb_mtx); 1440 mtx_unlock(&ng_btsocket_sco_rt_mtx); 1441 1442 return (error); 1443 } /* ng_btsocket_sco_connect */ 1444 1445 /* 1446 * Process ioctl's calls on socket 1447 */ 1448 1449 int 1450 ng_btsocket_sco_control(struct socket *so, u_long cmd, caddr_t data, 1451 struct ifnet *ifp, struct thread *td) 1452 { 1453 return (EINVAL); 1454 } /* ng_btsocket_sco_control */ 1455 1456 /* 1457 * Process getsockopt/setsockopt system calls 1458 */ 1459 1460 int 1461 ng_btsocket_sco_ctloutput(struct socket *so, struct sockopt *sopt) 1462 { 1463 ng_btsocket_sco_pcb_p pcb = so2sco_pcb(so); 1464 int error, tmp; 1465 1466 if (ng_btsocket_sco_node == NULL) 1467 return (EINVAL); 1468 if (pcb == NULL) 1469 return (EINVAL); 1470 1471 if (sopt->sopt_level != SOL_SCO) 1472 return (0); 1473 1474 mtx_lock(&pcb->pcb_mtx); 1475 1476 switch (sopt->sopt_dir) { 1477 case SOPT_GET: 1478 if (pcb->state != NG_BTSOCKET_SCO_OPEN) { 1479 error = ENOTCONN; 1480 break; 1481 } 1482 1483 switch (sopt->sopt_name) { 1484 case SO_SCO_MTU: 1485 tmp = pcb->rt->pkt_size; 1486 error = sooptcopyout(sopt, &tmp, sizeof(tmp)); 1487 break; 1488 1489 case SO_SCO_CONNINFO: 1490 tmp = pcb->con_handle; 1491 error = sooptcopyout(sopt, &tmp, sizeof(tmp)); 1492 break; 1493 1494 default: 1495 error = EINVAL; 1496 break; 1497 } 1498 break; 1499 1500 case SOPT_SET: 1501 error = ENOPROTOOPT; 1502 break; 1503 1504 default: 1505 error = EINVAL; 1506 break; 1507 } 1508 1509 mtx_unlock(&pcb->pcb_mtx); 1510 1511 return (error); 1512 } /* ng_btsocket_sco_ctloutput */ 1513 1514 /* 1515 * Detach and destroy socket 1516 */ 1517 1518 void 1519 ng_btsocket_sco_detach(struct socket *so) 1520 { 1521 ng_btsocket_sco_pcb_p pcb = so2sco_pcb(so); 1522 1523 KASSERT(pcb != NULL, ("ng_btsocket_sco_detach: pcb == NULL")); 1524 1525 if (ng_btsocket_sco_node == NULL) 1526 return; 1527 1528 mtx_lock(&ng_btsocket_sco_sockets_mtx); 1529 mtx_lock(&pcb->pcb_mtx); 1530 1531 if (pcb->flags & NG_BTSOCKET_SCO_TIMO) 1532 ng_btsocket_sco_untimeout(pcb); 1533 1534 if (pcb->state == NG_BTSOCKET_SCO_OPEN) 1535 ng_btsocket_sco_send_lp_discon_req(pcb); 1536 1537 pcb->state = NG_BTSOCKET_SCO_CLOSED; 1538 1539 LIST_REMOVE(pcb, next); 1540 1541 mtx_unlock(&pcb->pcb_mtx); 1542 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 1543 1544 mtx_destroy(&pcb->pcb_mtx); 1545 bzero(pcb, sizeof(*pcb)); 1546 free(pcb, M_NETGRAPH_BTSOCKET_SCO); 1547 1548 soisdisconnected(so); 1549 so->so_pcb = NULL; 1550 } /* ng_btsocket_sco_detach */ 1551 1552 /* 1553 * Disconnect socket 1554 */ 1555 1556 int 1557 ng_btsocket_sco_disconnect(struct socket *so) 1558 { 1559 ng_btsocket_sco_pcb_p pcb = so2sco_pcb(so); 1560 1561 if (pcb == NULL) 1562 return (EINVAL); 1563 if (ng_btsocket_sco_node == NULL) 1564 return (EINVAL); 1565 1566 mtx_lock(&pcb->pcb_mtx); 1567 1568 if (pcb->state == NG_BTSOCKET_SCO_DISCONNECTING) { 1569 mtx_unlock(&pcb->pcb_mtx); 1570 1571 return (EINPROGRESS); 1572 } 1573 1574 if (pcb->flags & NG_BTSOCKET_SCO_TIMO) 1575 ng_btsocket_sco_untimeout(pcb); 1576 1577 if (pcb->state == NG_BTSOCKET_SCO_OPEN) { 1578 ng_btsocket_sco_send_lp_discon_req(pcb); 1579 1580 pcb->state = NG_BTSOCKET_SCO_DISCONNECTING; 1581 soisdisconnecting(so); 1582 1583 ng_btsocket_sco_timeout(pcb); 1584 } else { 1585 pcb->state = NG_BTSOCKET_SCO_CLOSED; 1586 soisdisconnected(so); 1587 } 1588 1589 mtx_unlock(&pcb->pcb_mtx); 1590 1591 return (0); 1592 } /* ng_btsocket_sco_disconnect */ 1593 1594 /* 1595 * Listen on socket 1596 */ 1597 1598 int 1599 ng_btsocket_sco_listen(struct socket *so, int backlog, struct thread *td) 1600 { 1601 ng_btsocket_sco_pcb_p pcb = so2sco_pcb(so); 1602 int error; 1603 1604 if (pcb == NULL) 1605 return (EINVAL); 1606 if (ng_btsocket_sco_node == NULL) 1607 return (EINVAL); 1608 1609 SOCK_LOCK(so); 1610 mtx_lock(&pcb->pcb_mtx); 1611 1612 error = solisten_proto_check(so); 1613 if (error != 0) 1614 goto out; 1615 #if 0 1616 if (bcmp(&pcb->src, NG_HCI_BDADDR_ANY, sizeof(bdaddr_t)) == 0) { 1617 error = EDESTADDRREQ; 1618 goto out; 1619 } 1620 #endif 1621 solisten_proto(so, backlog); 1622 out: 1623 mtx_unlock(&pcb->pcb_mtx); 1624 SOCK_UNLOCK(so); 1625 1626 return (error); 1627 } /* ng_btsocket_listen */ 1628 1629 /* 1630 * Get peer address 1631 */ 1632 1633 int 1634 ng_btsocket_sco_peeraddr(struct socket *so, struct sockaddr **nam) 1635 { 1636 ng_btsocket_sco_pcb_p pcb = so2sco_pcb(so); 1637 struct sockaddr_sco sa; 1638 1639 if (pcb == NULL) 1640 return (EINVAL); 1641 if (ng_btsocket_sco_node == NULL) 1642 return (EINVAL); 1643 1644 mtx_lock(&pcb->pcb_mtx); 1645 bcopy(&pcb->dst, &sa.sco_bdaddr, sizeof(sa.sco_bdaddr)); 1646 mtx_unlock(&pcb->pcb_mtx); 1647 1648 sa.sco_len = sizeof(sa); 1649 sa.sco_family = AF_BLUETOOTH; 1650 1651 *nam = sodupsockaddr((struct sockaddr *) &sa, M_NOWAIT); 1652 1653 return ((*nam == NULL)? ENOMEM : 0); 1654 } /* ng_btsocket_sco_peeraddr */ 1655 1656 /* 1657 * Send data to socket 1658 */ 1659 1660 int 1661 ng_btsocket_sco_send(struct socket *so, int flags, struct mbuf *m, 1662 struct sockaddr *nam, struct mbuf *control, struct thread *td) 1663 { 1664 ng_btsocket_sco_pcb_t *pcb = so2sco_pcb(so); 1665 int error = 0; 1666 1667 if (ng_btsocket_sco_node == NULL) { 1668 error = ENETDOWN; 1669 goto drop; 1670 } 1671 1672 /* Check socket and input */ 1673 if (pcb == NULL || m == NULL || control != NULL) { 1674 error = EINVAL; 1675 goto drop; 1676 } 1677 1678 mtx_lock(&pcb->pcb_mtx); 1679 1680 /* Make sure socket is connected */ 1681 if (pcb->state != NG_BTSOCKET_SCO_OPEN) { 1682 mtx_unlock(&pcb->pcb_mtx); 1683 error = ENOTCONN; 1684 goto drop; 1685 } 1686 1687 /* Check route */ 1688 if (pcb->rt == NULL || 1689 pcb->rt->hook == NULL || NG_HOOK_NOT_VALID(pcb->rt->hook)) { 1690 mtx_unlock(&pcb->pcb_mtx); 1691 error = ENETDOWN; 1692 goto drop; 1693 } 1694 1695 /* Check packet size */ 1696 if (m->m_pkthdr.len > pcb->rt->pkt_size) { 1697 NG_BTSOCKET_SCO_ERR( 1698 "%s: Packet too big, len=%d, pkt_size=%d\n", 1699 __func__, m->m_pkthdr.len, pcb->rt->pkt_size); 1700 1701 mtx_unlock(&pcb->pcb_mtx); 1702 error = EMSGSIZE; 1703 goto drop; 1704 } 1705 1706 /* 1707 * First put packet on socket send queue. Then check if we have 1708 * pending timeout. If we do not have timeout then we must send 1709 * packet and schedule timeout. Otherwise do nothing and wait for 1710 * NGM_HCI_SYNC_CON_QUEUE message. 1711 */ 1712 1713 sbappendrecord(&pcb->so->so_snd, m); 1714 m = NULL; 1715 1716 if (!(pcb->flags & NG_BTSOCKET_SCO_TIMO)) { 1717 error = ng_btsocket_sco_send2(pcb); 1718 if (error == 0) 1719 ng_btsocket_sco_timeout(pcb); 1720 else 1721 sbdroprecord(&pcb->so->so_snd); /* XXX */ 1722 } 1723 1724 mtx_unlock(&pcb->pcb_mtx); 1725 drop: 1726 NG_FREE_M(m); /* checks for != NULL */ 1727 NG_FREE_M(control); 1728 1729 return (error); 1730 } /* ng_btsocket_sco_send */ 1731 1732 /* 1733 * Send first packet in the socket queue to the SCO layer 1734 */ 1735 1736 static int 1737 ng_btsocket_sco_send2(ng_btsocket_sco_pcb_p pcb) 1738 { 1739 struct mbuf *m = NULL; 1740 ng_hci_scodata_pkt_t *hdr = NULL; 1741 int error = 0; 1742 1743 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 1744 1745 while (pcb->rt->pending < pcb->rt->num_pkts && 1746 sbavail(&pcb->so->so_snd) > 0) { 1747 /* Get a copy of the first packet on send queue */ 1748 m = m_dup(pcb->so->so_snd.sb_mb, M_NOWAIT); 1749 if (m == NULL) { 1750 error = ENOBUFS; 1751 break; 1752 } 1753 1754 /* Create SCO packet header */ 1755 M_PREPEND(m, sizeof(*hdr), M_NOWAIT); 1756 if (m != NULL) 1757 if (m->m_len < sizeof(*hdr)) 1758 m = m_pullup(m, sizeof(*hdr)); 1759 1760 if (m == NULL) { 1761 error = ENOBUFS; 1762 break; 1763 } 1764 1765 /* Fill in the header */ 1766 hdr = mtod(m, ng_hci_scodata_pkt_t *); 1767 hdr->type = NG_HCI_SCO_DATA_PKT; 1768 hdr->con_handle = htole16(NG_HCI_MK_CON_HANDLE(pcb->con_handle, 0, 0)); 1769 hdr->length = m->m_pkthdr.len - sizeof(*hdr); 1770 1771 /* Send packet */ 1772 NG_SEND_DATA_ONLY(error, pcb->rt->hook, m); 1773 if (error != 0) 1774 break; 1775 1776 pcb->rt->pending ++; 1777 } 1778 1779 return ((pcb->rt->pending > 0)? 0 : error); 1780 } /* ng_btsocket_sco_send2 */ 1781 1782 /* 1783 * Get socket address 1784 */ 1785 1786 int 1787 ng_btsocket_sco_sockaddr(struct socket *so, struct sockaddr **nam) 1788 { 1789 ng_btsocket_sco_pcb_p pcb = so2sco_pcb(so); 1790 struct sockaddr_sco sa; 1791 1792 if (pcb == NULL) 1793 return (EINVAL); 1794 if (ng_btsocket_sco_node == NULL) 1795 return (EINVAL); 1796 1797 mtx_lock(&pcb->pcb_mtx); 1798 bcopy(&pcb->src, &sa.sco_bdaddr, sizeof(sa.sco_bdaddr)); 1799 mtx_unlock(&pcb->pcb_mtx); 1800 1801 sa.sco_len = sizeof(sa); 1802 sa.sco_family = AF_BLUETOOTH; 1803 1804 *nam = sodupsockaddr((struct sockaddr *) &sa, M_NOWAIT); 1805 1806 return ((*nam == NULL)? ENOMEM : 0); 1807 } /* ng_btsocket_sco_sockaddr */ 1808 1809 /***************************************************************************** 1810 ***************************************************************************** 1811 ** Misc. functions 1812 ***************************************************************************** 1813 *****************************************************************************/ 1814 1815 /* 1816 * Look for the socket that listens on given bdaddr. 1817 * Returns exact or close match (if any). 1818 * Caller must hold ng_btsocket_sco_sockets_mtx. 1819 * Returns with locked pcb. 1820 */ 1821 1822 static ng_btsocket_sco_pcb_p 1823 ng_btsocket_sco_pcb_by_addr(bdaddr_p bdaddr) 1824 { 1825 ng_btsocket_sco_pcb_p p = NULL, p1 = NULL; 1826 1827 mtx_assert(&ng_btsocket_sco_sockets_mtx, MA_OWNED); 1828 1829 LIST_FOREACH(p, &ng_btsocket_sco_sockets, next) { 1830 mtx_lock(&p->pcb_mtx); 1831 1832 if (p->so == NULL || !(p->so->so_options & SO_ACCEPTCONN)) { 1833 mtx_unlock(&p->pcb_mtx); 1834 continue; 1835 } 1836 1837 if (bcmp(&p->src, bdaddr, sizeof(p->src)) == 0) 1838 return (p); /* return with locked pcb */ 1839 1840 if (bcmp(&p->src, NG_HCI_BDADDR_ANY, sizeof(p->src)) == 0) 1841 p1 = p; 1842 1843 mtx_unlock(&p->pcb_mtx); 1844 } 1845 1846 if (p1 != NULL) 1847 mtx_lock(&p1->pcb_mtx); 1848 1849 return (p1); 1850 } /* ng_btsocket_sco_pcb_by_addr */ 1851 1852 /* 1853 * Look for the socket that assigned to given source address and handle. 1854 * Caller must hold ng_btsocket_sco_sockets_mtx. 1855 * Returns with locked pcb. 1856 */ 1857 1858 static ng_btsocket_sco_pcb_p 1859 ng_btsocket_sco_pcb_by_handle(bdaddr_p src, int con_handle) 1860 { 1861 ng_btsocket_sco_pcb_p p = NULL; 1862 1863 mtx_assert(&ng_btsocket_sco_sockets_mtx, MA_OWNED); 1864 1865 LIST_FOREACH(p, &ng_btsocket_sco_sockets, next) { 1866 mtx_lock(&p->pcb_mtx); 1867 1868 if (p->con_handle == con_handle && 1869 bcmp(src, &p->src, sizeof(p->src)) == 0) 1870 return (p); /* return with locked pcb */ 1871 1872 mtx_unlock(&p->pcb_mtx); 1873 } 1874 1875 return (NULL); 1876 } /* ng_btsocket_sco_pcb_by_handle */ 1877 1878 /* 1879 * Look for the socket in CONNECTING state with given source and destination 1880 * addresses. Caller must hold ng_btsocket_sco_sockets_mtx. 1881 * Returns with locked pcb. 1882 */ 1883 1884 static ng_btsocket_sco_pcb_p 1885 ng_btsocket_sco_pcb_by_addrs(bdaddr_p src, bdaddr_p dst) 1886 { 1887 ng_btsocket_sco_pcb_p p = NULL; 1888 1889 mtx_assert(&ng_btsocket_sco_sockets_mtx, MA_OWNED); 1890 1891 LIST_FOREACH(p, &ng_btsocket_sco_sockets, next) { 1892 mtx_lock(&p->pcb_mtx); 1893 1894 if (p->state == NG_BTSOCKET_SCO_CONNECTING && 1895 bcmp(src, &p->src, sizeof(p->src)) == 0 && 1896 bcmp(dst, &p->dst, sizeof(p->dst)) == 0) 1897 return (p); /* return with locked pcb */ 1898 1899 mtx_unlock(&p->pcb_mtx); 1900 } 1901 1902 return (NULL); 1903 } /* ng_btsocket_sco_pcb_by_addrs */ 1904 1905 /* 1906 * Set timeout on socket 1907 */ 1908 1909 static void 1910 ng_btsocket_sco_timeout(ng_btsocket_sco_pcb_p pcb) 1911 { 1912 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 1913 1914 if (!(pcb->flags & NG_BTSOCKET_SCO_TIMO)) { 1915 pcb->flags |= NG_BTSOCKET_SCO_TIMO; 1916 callout_reset(&pcb->timo, bluetooth_sco_rtx_timeout(), 1917 ng_btsocket_sco_process_timeout, pcb); 1918 } else 1919 KASSERT(0, 1920 ("%s: Duplicated socket timeout?!\n", __func__)); 1921 } /* ng_btsocket_sco_timeout */ 1922 1923 /* 1924 * Unset timeout on socket 1925 */ 1926 1927 static void 1928 ng_btsocket_sco_untimeout(ng_btsocket_sco_pcb_p pcb) 1929 { 1930 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 1931 1932 if (pcb->flags & NG_BTSOCKET_SCO_TIMO) { 1933 callout_stop(&pcb->timo); 1934 pcb->flags &= ~NG_BTSOCKET_SCO_TIMO; 1935 } else 1936 KASSERT(0, 1937 ("%s: No socket timeout?!\n", __func__)); 1938 } /* ng_btsocket_sco_untimeout */ 1939 1940 /* 1941 * Process timeout on socket 1942 */ 1943 1944 static void 1945 ng_btsocket_sco_process_timeout(void *xpcb) 1946 { 1947 ng_btsocket_sco_pcb_p pcb = (ng_btsocket_sco_pcb_p) xpcb; 1948 1949 mtx_lock(&pcb->pcb_mtx); 1950 1951 pcb->flags &= ~NG_BTSOCKET_SCO_TIMO; 1952 pcb->so->so_error = ETIMEDOUT; 1953 1954 switch (pcb->state) { 1955 case NG_BTSOCKET_SCO_CONNECTING: 1956 /* Connect timeout - close the socket */ 1957 pcb->state = NG_BTSOCKET_SCO_CLOSED; 1958 soisdisconnected(pcb->so); 1959 break; 1960 1961 case NG_BTSOCKET_SCO_OPEN: 1962 /* Send timeout - did not get NGM_HCI_SYNC_CON_QUEUE */ 1963 sbdroprecord(&pcb->so->so_snd); 1964 sowwakeup(pcb->so); 1965 /* XXX FIXME what to do with pcb->rt->pending??? */ 1966 break; 1967 1968 case NG_BTSOCKET_SCO_DISCONNECTING: 1969 /* Disconnect timeout - disconnect the socket anyway */ 1970 pcb->state = NG_BTSOCKET_SCO_CLOSED; 1971 soisdisconnected(pcb->so); 1972 break; 1973 1974 default: 1975 NG_BTSOCKET_SCO_ERR( 1976 "%s: Invalid socket state=%d\n", __func__, pcb->state); 1977 break; 1978 } 1979 1980 mtx_unlock(&pcb->pcb_mtx); 1981 } /* ng_btsocket_sco_process_timeout */ 1982