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, CTLFLAG_RW, 116 0, "Bluetooth SEQPACKET SCO sockets family"); 117 SYSCTL_UINT(_net_bluetooth_sco_sockets_seq, OID_AUTO, debug_level, 118 CTLFLAG_RW, 119 &ng_btsocket_sco_debug_level, NG_BTSOCKET_WARN_LEVEL, 120 "Bluetooth SEQPACKET SCO sockets debug level"); 121 SYSCTL_UINT(_net_bluetooth_sco_sockets_seq, OID_AUTO, queue_len, 122 CTLFLAG_RD, 123 &ng_btsocket_sco_queue.len, 0, 124 "Bluetooth SEQPACKET SCO sockets input queue length"); 125 SYSCTL_UINT(_net_bluetooth_sco_sockets_seq, OID_AUTO, queue_maxlen, 126 CTLFLAG_RD, 127 &ng_btsocket_sco_queue.maxlen, 0, 128 "Bluetooth SEQPACKET SCO sockets input queue max. length"); 129 SYSCTL_UINT(_net_bluetooth_sco_sockets_seq, OID_AUTO, queue_drops, 130 CTLFLAG_RD, 131 &ng_btsocket_sco_queue.drops, 0, 132 "Bluetooth SEQPACKET SCO sockets input queue drops"); 133 134 /* Debug */ 135 #define NG_BTSOCKET_SCO_INFO \ 136 if (ng_btsocket_sco_debug_level >= NG_BTSOCKET_INFO_LEVEL && \ 137 ppsratecheck(&ng_btsocket_sco_lasttime, &ng_btsocket_sco_curpps, 1)) \ 138 printf 139 140 #define NG_BTSOCKET_SCO_WARN \ 141 if (ng_btsocket_sco_debug_level >= NG_BTSOCKET_WARN_LEVEL && \ 142 ppsratecheck(&ng_btsocket_sco_lasttime, &ng_btsocket_sco_curpps, 1)) \ 143 printf 144 145 #define NG_BTSOCKET_SCO_ERR \ 146 if (ng_btsocket_sco_debug_level >= NG_BTSOCKET_ERR_LEVEL && \ 147 ppsratecheck(&ng_btsocket_sco_lasttime, &ng_btsocket_sco_curpps, 1)) \ 148 printf 149 150 #define NG_BTSOCKET_SCO_ALERT \ 151 if (ng_btsocket_sco_debug_level >= NG_BTSOCKET_ALERT_LEVEL && \ 152 ppsratecheck(&ng_btsocket_sco_lasttime, &ng_btsocket_sco_curpps, 1)) \ 153 printf 154 155 /* 156 * Netgraph message processing routines 157 */ 158 159 static int ng_btsocket_sco_process_lp_con_cfm 160 (struct ng_mesg *, ng_btsocket_sco_rtentry_p); 161 static int ng_btsocket_sco_process_lp_con_ind 162 (struct ng_mesg *, ng_btsocket_sco_rtentry_p); 163 static int ng_btsocket_sco_process_lp_discon_ind 164 (struct ng_mesg *, ng_btsocket_sco_rtentry_p); 165 166 /* 167 * Send LP messages to the lower layer 168 */ 169 170 static int ng_btsocket_sco_send_lp_con_req 171 (ng_btsocket_sco_pcb_p); 172 static int ng_btsocket_sco_send_lp_con_rsp 173 (ng_btsocket_sco_rtentry_p, bdaddr_p, int); 174 static int ng_btsocket_sco_send_lp_discon_req 175 (ng_btsocket_sco_pcb_p); 176 177 static int ng_btsocket_sco_send2 178 (ng_btsocket_sco_pcb_p); 179 180 /* 181 * Timeout processing routines 182 */ 183 184 static void ng_btsocket_sco_timeout (ng_btsocket_sco_pcb_p); 185 static void ng_btsocket_sco_untimeout (ng_btsocket_sco_pcb_p); 186 static void ng_btsocket_sco_process_timeout (void *); 187 188 /* 189 * Other stuff 190 */ 191 192 static ng_btsocket_sco_pcb_p ng_btsocket_sco_pcb_by_addr(bdaddr_p); 193 static ng_btsocket_sco_pcb_p ng_btsocket_sco_pcb_by_handle(bdaddr_p, int); 194 static ng_btsocket_sco_pcb_p ng_btsocket_sco_pcb_by_addrs(bdaddr_p, bdaddr_p); 195 196 #define ng_btsocket_sco_wakeup_input_task() \ 197 taskqueue_enqueue(taskqueue_swi, &ng_btsocket_sco_queue_task) 198 199 #define ng_btsocket_sco_wakeup_route_task() \ 200 taskqueue_enqueue(taskqueue_swi, &ng_btsocket_sco_rt_task) 201 202 /***************************************************************************** 203 ***************************************************************************** 204 ** Netgraph node interface 205 ***************************************************************************** 206 *****************************************************************************/ 207 208 /* 209 * Netgraph node constructor. Do not allow to create node of this type. 210 */ 211 212 static int 213 ng_btsocket_sco_node_constructor(node_p node) 214 { 215 return (EINVAL); 216 } /* ng_btsocket_sco_node_constructor */ 217 218 /* 219 * Do local shutdown processing. Let old node go and create new fresh one. 220 */ 221 222 static int 223 ng_btsocket_sco_node_shutdown(node_p node) 224 { 225 int error = 0; 226 227 NG_NODE_UNREF(node); 228 229 /* Create new node */ 230 error = ng_make_node_common(&typestruct, &ng_btsocket_sco_node); 231 if (error != 0) { 232 NG_BTSOCKET_SCO_ALERT( 233 "%s: Could not create Netgraph node, error=%d\n", __func__, error); 234 235 ng_btsocket_sco_node = NULL; 236 237 return (error); 238 } 239 240 error = ng_name_node(ng_btsocket_sco_node, 241 NG_BTSOCKET_SCO_NODE_TYPE); 242 if (error != 0) { 243 NG_BTSOCKET_SCO_ALERT( 244 "%s: Could not name Netgraph node, error=%d\n", __func__, error); 245 246 NG_NODE_UNREF(ng_btsocket_sco_node); 247 ng_btsocket_sco_node = NULL; 248 249 return (error); 250 } 251 252 return (0); 253 } /* ng_btsocket_sco_node_shutdown */ 254 255 /* 256 * We allow any hook to be connected to the node. 257 */ 258 259 static int 260 ng_btsocket_sco_node_newhook(node_p node, hook_p hook, char const *name) 261 { 262 return (0); 263 } /* ng_btsocket_sco_node_newhook */ 264 265 /* 266 * Just say "YEP, that's OK by me!" 267 */ 268 269 static int 270 ng_btsocket_sco_node_connect(hook_p hook) 271 { 272 NG_HOOK_SET_PRIVATE(hook, NULL); 273 NG_HOOK_REF(hook); /* Keep extra reference to the hook */ 274 275 #if 0 276 NG_HOOK_FORCE_QUEUE(NG_HOOK_PEER(hook)); 277 NG_HOOK_FORCE_QUEUE(hook); 278 #endif 279 280 return (0); 281 } /* ng_btsocket_sco_node_connect */ 282 283 /* 284 * Hook disconnection. Schedule route cleanup task 285 */ 286 287 static int 288 ng_btsocket_sco_node_disconnect(hook_p hook) 289 { 290 /* 291 * If hook has private information than we must have this hook in 292 * the routing table and must schedule cleaning for the routing table. 293 * Otherwise hook was connected but we never got "hook_info" message, 294 * so we have never added this hook to the routing table and it save 295 * to just delete it. 296 */ 297 298 if (NG_HOOK_PRIVATE(hook) != NULL) 299 return (ng_btsocket_sco_wakeup_route_task()); 300 301 NG_HOOK_UNREF(hook); /* Remove extra reference */ 302 303 return (0); 304 } /* ng_btsocket_sco_node_disconnect */ 305 306 /* 307 * Process incoming messages 308 */ 309 310 static int 311 ng_btsocket_sco_node_rcvmsg(node_p node, item_p item, hook_p hook) 312 { 313 struct ng_mesg *msg = NGI_MSG(item); /* item still has message */ 314 int error = 0; 315 316 if (msg != NULL && msg->header.typecookie == NGM_HCI_COOKIE) { 317 mtx_lock(&ng_btsocket_sco_queue_mtx); 318 if (NG_BT_ITEMQ_FULL(&ng_btsocket_sco_queue)) { 319 NG_BTSOCKET_SCO_ERR( 320 "%s: Input queue is full (msg)\n", __func__); 321 322 NG_BT_ITEMQ_DROP(&ng_btsocket_sco_queue); 323 NG_FREE_ITEM(item); 324 error = ENOBUFS; 325 } else { 326 if (hook != NULL) { 327 NG_HOOK_REF(hook); 328 NGI_SET_HOOK(item, hook); 329 } 330 331 NG_BT_ITEMQ_ENQUEUE(&ng_btsocket_sco_queue, item); 332 error = ng_btsocket_sco_wakeup_input_task(); 333 } 334 mtx_unlock(&ng_btsocket_sco_queue_mtx); 335 } else { 336 NG_FREE_ITEM(item); 337 error = EINVAL; 338 } 339 340 return (error); 341 } /* ng_btsocket_sco_node_rcvmsg */ 342 343 /* 344 * Receive data on a hook 345 */ 346 347 static int 348 ng_btsocket_sco_node_rcvdata(hook_p hook, item_p item) 349 { 350 int error = 0; 351 352 mtx_lock(&ng_btsocket_sco_queue_mtx); 353 if (NG_BT_ITEMQ_FULL(&ng_btsocket_sco_queue)) { 354 NG_BTSOCKET_SCO_ERR( 355 "%s: Input queue is full (data)\n", __func__); 356 357 NG_BT_ITEMQ_DROP(&ng_btsocket_sco_queue); 358 NG_FREE_ITEM(item); 359 error = ENOBUFS; 360 } else { 361 NG_HOOK_REF(hook); 362 NGI_SET_HOOK(item, hook); 363 364 NG_BT_ITEMQ_ENQUEUE(&ng_btsocket_sco_queue, item); 365 error = ng_btsocket_sco_wakeup_input_task(); 366 } 367 mtx_unlock(&ng_btsocket_sco_queue_mtx); 368 369 return (error); 370 } /* ng_btsocket_sco_node_rcvdata */ 371 372 /* 373 * Process LP_ConnectCfm event from the lower layer protocol 374 */ 375 376 static int 377 ng_btsocket_sco_process_lp_con_cfm(struct ng_mesg *msg, 378 ng_btsocket_sco_rtentry_p rt) 379 { 380 ng_hci_lp_con_cfm_ep *ep = NULL; 381 ng_btsocket_sco_pcb_t *pcb = NULL; 382 int error = 0; 383 384 if (msg->header.arglen != sizeof(*ep)) 385 return (EMSGSIZE); 386 387 ep = (ng_hci_lp_con_cfm_ep *)(msg->data); 388 389 mtx_lock(&ng_btsocket_sco_sockets_mtx); 390 391 /* Look for the socket with the token */ 392 pcb = ng_btsocket_sco_pcb_by_addrs(&rt->src, &ep->bdaddr); 393 if (pcb == NULL) { 394 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 395 return (ENOENT); 396 } 397 398 /* pcb is locked */ 399 400 NG_BTSOCKET_SCO_INFO( 401 "%s: Got LP_ConnectCfm response, src bdaddr=%x:%x:%x:%x:%x:%x, " \ 402 "dst bdaddr=%x:%x:%x:%x:%x:%x, status=%d, handle=%d, state=%d\n", 403 __func__, 404 pcb->src.b[5], pcb->src.b[4], pcb->src.b[3], 405 pcb->src.b[2], pcb->src.b[1], pcb->src.b[0], 406 pcb->dst.b[5], pcb->dst.b[4], pcb->dst.b[3], 407 pcb->dst.b[2], pcb->dst.b[1], pcb->dst.b[0], 408 ep->status, ep->con_handle, pcb->state); 409 410 if (pcb->state != NG_BTSOCKET_SCO_CONNECTING) { 411 mtx_unlock(&pcb->pcb_mtx); 412 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 413 414 return (ENOENT); 415 } 416 417 ng_btsocket_sco_untimeout(pcb); 418 419 if (ep->status == 0) { 420 /* 421 * Connection is open. Update connection handle and 422 * socket state 423 */ 424 425 pcb->con_handle = ep->con_handle; 426 pcb->state = NG_BTSOCKET_SCO_OPEN; 427 soisconnected(pcb->so); 428 } else { 429 /* 430 * We have failed to open connection, so disconnect the socket 431 */ 432 433 pcb->so->so_error = ECONNREFUSED; /* XXX convert status ??? */ 434 pcb->state = NG_BTSOCKET_SCO_CLOSED; 435 soisdisconnected(pcb->so); 436 } 437 438 mtx_unlock(&pcb->pcb_mtx); 439 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 440 441 return (error); 442 } /* ng_btsocket_sco_process_lp_con_cfm */ 443 444 /* 445 * Process LP_ConnectInd indicator. Find socket that listens on address. 446 * Find exact or closest match. 447 */ 448 449 static int 450 ng_btsocket_sco_process_lp_con_ind(struct ng_mesg *msg, 451 ng_btsocket_sco_rtentry_p rt) 452 { 453 ng_hci_lp_con_ind_ep *ep = NULL; 454 ng_btsocket_sco_pcb_t *pcb = NULL, *pcb1 = NULL; 455 int error = 0; 456 u_int16_t status = 0; 457 458 if (msg->header.arglen != sizeof(*ep)) 459 return (EMSGSIZE); 460 461 ep = (ng_hci_lp_con_ind_ep *)(msg->data); 462 463 NG_BTSOCKET_SCO_INFO( 464 "%s: Got LP_ConnectInd indicator, src bdaddr=%x:%x:%x:%x:%x:%x, " \ 465 "dst bdaddr=%x:%x:%x:%x:%x:%x\n", 466 __func__, 467 rt->src.b[5], rt->src.b[4], rt->src.b[3], 468 rt->src.b[2], rt->src.b[1], rt->src.b[0], 469 ep->bdaddr.b[5], ep->bdaddr.b[4], ep->bdaddr.b[3], 470 ep->bdaddr.b[2], ep->bdaddr.b[1], ep->bdaddr.b[0]); 471 472 mtx_lock(&ng_btsocket_sco_sockets_mtx); 473 474 pcb = ng_btsocket_sco_pcb_by_addr(&rt->src); 475 if (pcb != NULL) { 476 struct socket *so1; 477 478 /* pcb is locked */ 479 480 CURVNET_SET(pcb->so->so_vnet); 481 so1 = sonewconn(pcb->so, 0); 482 CURVNET_RESTORE(); 483 484 if (so1 == NULL) { 485 status = 0x0d; /* Rejected due to limited resources */ 486 goto respond; 487 } 488 489 /* 490 * If we got here than we have created new socket. So complete 491 * connection. If we we listening on specific address then copy 492 * source address from listening socket, otherwise copy source 493 * address from hook's routing information. 494 */ 495 496 pcb1 = so2sco_pcb(so1); 497 KASSERT((pcb1 != NULL), 498 ("%s: pcb1 == NULL\n", __func__)); 499 500 mtx_lock(&pcb1->pcb_mtx); 501 502 if (bcmp(&pcb->src, NG_HCI_BDADDR_ANY, sizeof(pcb->src)) != 0) 503 bcopy(&pcb->src, &pcb1->src, sizeof(pcb1->src)); 504 else 505 bcopy(&rt->src, &pcb1->src, sizeof(pcb1->src)); 506 507 pcb1->flags &= ~NG_BTSOCKET_SCO_CLIENT; 508 509 bcopy(&ep->bdaddr, &pcb1->dst, sizeof(pcb1->dst)); 510 pcb1->rt = rt; 511 } else 512 /* Nobody listens on requested BDADDR */ 513 status = 0x1f; /* Unspecified Error */ 514 515 respond: 516 error = ng_btsocket_sco_send_lp_con_rsp(rt, &ep->bdaddr, status); 517 if (pcb1 != NULL) { 518 if (error != 0) { 519 pcb1->so->so_error = error; 520 pcb1->state = NG_BTSOCKET_SCO_CLOSED; 521 soisdisconnected(pcb1->so); 522 } else { 523 pcb1->state = NG_BTSOCKET_SCO_CONNECTING; 524 soisconnecting(pcb1->so); 525 526 ng_btsocket_sco_timeout(pcb1); 527 } 528 529 mtx_unlock(&pcb1->pcb_mtx); 530 } 531 532 if (pcb != NULL) 533 mtx_unlock(&pcb->pcb_mtx); 534 535 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 536 537 return (error); 538 } /* ng_btsocket_sco_process_lp_con_ind */ 539 540 /* 541 * Process LP_DisconnectInd indicator 542 */ 543 544 static int 545 ng_btsocket_sco_process_lp_discon_ind(struct ng_mesg *msg, 546 ng_btsocket_sco_rtentry_p rt) 547 { 548 ng_hci_lp_discon_ind_ep *ep = NULL; 549 ng_btsocket_sco_pcb_t *pcb = NULL; 550 551 /* Check message */ 552 if (msg->header.arglen != sizeof(*ep)) 553 return (EMSGSIZE); 554 555 ep = (ng_hci_lp_discon_ind_ep *)(msg->data); 556 557 mtx_lock(&ng_btsocket_sco_sockets_mtx); 558 559 /* Look for the socket with given channel ID */ 560 pcb = ng_btsocket_sco_pcb_by_handle(&rt->src, ep->con_handle); 561 if (pcb == NULL) { 562 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 563 return (0); 564 } 565 566 /* 567 * Disconnect the socket. If there was any pending request we can 568 * not do anything here anyway. 569 */ 570 571 /* pcb is locked */ 572 573 NG_BTSOCKET_SCO_INFO( 574 "%s: Got LP_DisconnectInd indicator, src bdaddr=%x:%x:%x:%x:%x:%x, " \ 575 "dst bdaddr=%x:%x:%x:%x:%x:%x, handle=%d, state=%d\n", 576 __func__, 577 pcb->src.b[5], pcb->src.b[4], pcb->src.b[3], 578 pcb->src.b[2], pcb->src.b[1], pcb->src.b[0], 579 pcb->dst.b[5], pcb->dst.b[4], pcb->dst.b[3], 580 pcb->dst.b[2], pcb->dst.b[1], pcb->dst.b[0], 581 pcb->con_handle, pcb->state); 582 583 if (pcb->flags & NG_BTSOCKET_SCO_TIMO) 584 ng_btsocket_sco_untimeout(pcb); 585 586 pcb->state = NG_BTSOCKET_SCO_CLOSED; 587 soisdisconnected(pcb->so); 588 589 mtx_unlock(&pcb->pcb_mtx); 590 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 591 592 return (0); 593 } /* ng_btsocket_sco_process_lp_discon_ind */ 594 595 /* 596 * Send LP_ConnectReq request 597 */ 598 599 static int 600 ng_btsocket_sco_send_lp_con_req(ng_btsocket_sco_pcb_p pcb) 601 { 602 struct ng_mesg *msg = NULL; 603 ng_hci_lp_con_req_ep *ep = NULL; 604 int error = 0; 605 606 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 607 608 if (pcb->rt == NULL || 609 pcb->rt->hook == NULL || NG_HOOK_NOT_VALID(pcb->rt->hook)) 610 return (ENETDOWN); 611 612 NG_MKMESSAGE(msg, NGM_HCI_COOKIE, NGM_HCI_LP_CON_REQ, 613 sizeof(*ep), M_NOWAIT); 614 if (msg == NULL) 615 return (ENOMEM); 616 617 ep = (ng_hci_lp_con_req_ep *)(msg->data); 618 ep->link_type = NG_HCI_LINK_SCO; 619 bcopy(&pcb->dst, &ep->bdaddr, sizeof(ep->bdaddr)); 620 621 NG_SEND_MSG_HOOK(error, ng_btsocket_sco_node, msg, pcb->rt->hook, 0); 622 623 return (error); 624 } /* ng_btsocket_sco_send_lp_con_req */ 625 626 /* 627 * Send LP_ConnectRsp response 628 */ 629 630 static int 631 ng_btsocket_sco_send_lp_con_rsp(ng_btsocket_sco_rtentry_p rt, bdaddr_p dst, int status) 632 { 633 struct ng_mesg *msg = NULL; 634 ng_hci_lp_con_rsp_ep *ep = NULL; 635 int error = 0; 636 637 if (rt == NULL || rt->hook == NULL || NG_HOOK_NOT_VALID(rt->hook)) 638 return (ENETDOWN); 639 640 NG_MKMESSAGE(msg, NGM_HCI_COOKIE, NGM_HCI_LP_CON_RSP, 641 sizeof(*ep), M_NOWAIT); 642 if (msg == NULL) 643 return (ENOMEM); 644 645 ep = (ng_hci_lp_con_rsp_ep *)(msg->data); 646 ep->status = status; 647 ep->link_type = NG_HCI_LINK_SCO; 648 bcopy(dst, &ep->bdaddr, sizeof(ep->bdaddr)); 649 650 NG_SEND_MSG_HOOK(error, ng_btsocket_sco_node, msg, rt->hook, 0); 651 652 return (error); 653 } /* ng_btsocket_sco_send_lp_con_rsp */ 654 655 /* 656 * Send LP_DisconReq request 657 */ 658 659 static int 660 ng_btsocket_sco_send_lp_discon_req(ng_btsocket_sco_pcb_p pcb) 661 { 662 struct ng_mesg *msg = NULL; 663 ng_hci_lp_discon_req_ep *ep = NULL; 664 int error = 0; 665 666 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 667 668 if (pcb->rt == NULL || 669 pcb->rt->hook == NULL || NG_HOOK_NOT_VALID(pcb->rt->hook)) 670 return (ENETDOWN); 671 672 NG_MKMESSAGE(msg, NGM_HCI_COOKIE, NGM_HCI_LP_DISCON_REQ, 673 sizeof(*ep), M_NOWAIT); 674 if (msg == NULL) 675 return (ENOMEM); 676 677 ep = (ng_hci_lp_discon_req_ep *)(msg->data); 678 ep->con_handle = pcb->con_handle; 679 ep->reason = 0x13; /* User Ended Connection */ 680 681 NG_SEND_MSG_HOOK(error, ng_btsocket_sco_node, msg, pcb->rt->hook, 0); 682 683 return (error); 684 } /* ng_btsocket_sco_send_lp_discon_req */ 685 686 /***************************************************************************** 687 ***************************************************************************** 688 ** Socket interface 689 ***************************************************************************** 690 *****************************************************************************/ 691 692 /* 693 * SCO sockets data input routine 694 */ 695 696 static void 697 ng_btsocket_sco_data_input(struct mbuf *m, hook_p hook) 698 { 699 ng_hci_scodata_pkt_t *hdr = NULL; 700 ng_btsocket_sco_pcb_t *pcb = NULL; 701 ng_btsocket_sco_rtentry_t *rt = NULL; 702 u_int16_t con_handle; 703 704 if (hook == NULL) { 705 NG_BTSOCKET_SCO_ALERT( 706 "%s: Invalid source hook for SCO data packet\n", __func__); 707 goto drop; 708 } 709 710 rt = (ng_btsocket_sco_rtentry_t *) NG_HOOK_PRIVATE(hook); 711 if (rt == NULL) { 712 NG_BTSOCKET_SCO_ALERT( 713 "%s: Could not find out source bdaddr for SCO data packet\n", __func__); 714 goto drop; 715 } 716 717 /* Make sure we can access header */ 718 if (m->m_pkthdr.len < sizeof(*hdr)) { 719 NG_BTSOCKET_SCO_ERR( 720 "%s: SCO data packet too small, len=%d\n", __func__, m->m_pkthdr.len); 721 goto drop; 722 } 723 724 if (m->m_len < sizeof(*hdr)) { 725 m = m_pullup(m, sizeof(*hdr)); 726 if (m == NULL) 727 goto drop; 728 } 729 730 /* Strip SCO packet header and verify packet length */ 731 hdr = mtod(m, ng_hci_scodata_pkt_t *); 732 m_adj(m, sizeof(*hdr)); 733 734 if (hdr->length != m->m_pkthdr.len) { 735 NG_BTSOCKET_SCO_ERR( 736 "%s: Bad SCO data packet length, len=%d, length=%d\n", 737 __func__, m->m_pkthdr.len, hdr->length); 738 goto drop; 739 } 740 741 /* 742 * Now process packet 743 */ 744 745 con_handle = NG_HCI_CON_HANDLE(le16toh(hdr->con_handle)); 746 747 NG_BTSOCKET_SCO_INFO( 748 "%s: Received SCO data packet: src bdaddr=%x:%x:%x:%x:%x:%x, handle=%d, " \ 749 "length=%d\n", __func__, 750 rt->src.b[5], rt->src.b[4], rt->src.b[3], 751 rt->src.b[2], rt->src.b[1], rt->src.b[0], 752 con_handle, hdr->length); 753 754 mtx_lock(&ng_btsocket_sco_sockets_mtx); 755 756 /* Find socket */ 757 pcb = ng_btsocket_sco_pcb_by_handle(&rt->src, con_handle); 758 if (pcb == NULL) { 759 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 760 goto drop; 761 } 762 763 /* pcb is locked */ 764 765 if (pcb->state != NG_BTSOCKET_SCO_OPEN) { 766 NG_BTSOCKET_SCO_ERR( 767 "%s: No connected socket found, src bdaddr=%x:%x:%x:%x:%x:%x, state=%d\n", 768 __func__, 769 rt->src.b[5], rt->src.b[4], rt->src.b[3], 770 rt->src.b[2], rt->src.b[1], rt->src.b[0], 771 pcb->state); 772 773 mtx_unlock(&pcb->pcb_mtx); 774 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 775 goto drop; 776 } 777 778 /* Check if we have enough space in socket receive queue */ 779 if (m->m_pkthdr.len > sbspace(&pcb->so->so_rcv)) { 780 NG_BTSOCKET_SCO_ERR( 781 "%s: Not enough space in socket receive queue. Dropping SCO data packet, " \ 782 "src bdaddr=%x:%x:%x:%x:%x:%x, len=%d, space=%ld\n", 783 __func__, 784 rt->src.b[5], rt->src.b[4], rt->src.b[3], 785 rt->src.b[2], rt->src.b[1], rt->src.b[0], 786 m->m_pkthdr.len, 787 sbspace(&pcb->so->so_rcv)); 788 789 mtx_unlock(&pcb->pcb_mtx); 790 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 791 goto drop; 792 } 793 794 /* Append packet to the socket receive queue and wakeup */ 795 sbappendrecord(&pcb->so->so_rcv, m); 796 m = NULL; 797 798 sorwakeup(pcb->so); 799 800 mtx_unlock(&pcb->pcb_mtx); 801 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 802 drop: 803 NG_FREE_M(m); /* checks for m != NULL */ 804 } /* ng_btsocket_sco_data_input */ 805 806 /* 807 * SCO sockets default message input routine 808 */ 809 810 static void 811 ng_btsocket_sco_default_msg_input(struct ng_mesg *msg, hook_p hook) 812 { 813 ng_btsocket_sco_rtentry_t *rt = NULL; 814 815 if (hook == NULL || NG_HOOK_NOT_VALID(hook)) 816 return; 817 818 rt = (ng_btsocket_sco_rtentry_t *) NG_HOOK_PRIVATE(hook); 819 820 switch (msg->header.cmd) { 821 case NGM_HCI_NODE_UP: { 822 ng_hci_node_up_ep *ep = NULL; 823 824 if (msg->header.arglen != sizeof(*ep)) 825 break; 826 827 ep = (ng_hci_node_up_ep *)(msg->data); 828 if (bcmp(&ep->bdaddr, NG_HCI_BDADDR_ANY, sizeof(bdaddr_t)) == 0) 829 break; 830 831 if (rt == NULL) { 832 rt = malloc(sizeof(*rt), 833 M_NETGRAPH_BTSOCKET_SCO, M_NOWAIT|M_ZERO); 834 if (rt == NULL) 835 break; 836 837 NG_HOOK_SET_PRIVATE(hook, rt); 838 839 mtx_lock(&ng_btsocket_sco_rt_mtx); 840 841 LIST_INSERT_HEAD(&ng_btsocket_sco_rt, rt, next); 842 } else 843 mtx_lock(&ng_btsocket_sco_rt_mtx); 844 845 bcopy(&ep->bdaddr, &rt->src, sizeof(rt->src)); 846 rt->pkt_size = (ep->pkt_size == 0)? 60 : ep->pkt_size; 847 rt->num_pkts = ep->num_pkts; 848 rt->hook = hook; 849 850 mtx_unlock(&ng_btsocket_sco_rt_mtx); 851 852 NG_BTSOCKET_SCO_INFO( 853 "%s: Updating hook \"%s\", src bdaddr=%x:%x:%x:%x:%x:%x, pkt_size=%d, " \ 854 "num_pkts=%d\n", __func__, NG_HOOK_NAME(hook), 855 rt->src.b[5], rt->src.b[4], rt->src.b[3], 856 rt->src.b[2], rt->src.b[1], rt->src.b[0], 857 rt->pkt_size, rt->num_pkts); 858 } break; 859 860 case NGM_HCI_SYNC_CON_QUEUE: { 861 ng_hci_sync_con_queue_ep *ep = NULL; 862 ng_btsocket_sco_pcb_t *pcb = NULL; 863 864 if (rt == NULL || msg->header.arglen != sizeof(*ep)) 865 break; 866 867 ep = (ng_hci_sync_con_queue_ep *)(msg->data); 868 869 rt->pending -= ep->completed; 870 if (rt->pending < 0) { 871 NG_BTSOCKET_SCO_WARN( 872 "%s: Pending packet counter is out of sync! bdaddr=%x:%x:%x:%x:%x:%x, " \ 873 "handle=%d, pending=%d, completed=%d\n", 874 __func__, 875 rt->src.b[5], rt->src.b[4], rt->src.b[3], 876 rt->src.b[2], rt->src.b[1], rt->src.b[0], 877 ep->con_handle, rt->pending, 878 ep->completed); 879 880 rt->pending = 0; 881 } 882 883 mtx_lock(&ng_btsocket_sco_sockets_mtx); 884 885 /* Find socket */ 886 pcb = ng_btsocket_sco_pcb_by_handle(&rt->src, ep->con_handle); 887 if (pcb == NULL) { 888 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 889 break; 890 } 891 892 /* pcb is locked */ 893 894 /* Check state */ 895 if (pcb->state == NG_BTSOCKET_SCO_OPEN) { 896 /* Remove timeout */ 897 ng_btsocket_sco_untimeout(pcb); 898 899 /* Drop completed packets from the send queue */ 900 for (; ep->completed > 0; ep->completed --) 901 sbdroprecord(&pcb->so->so_snd); 902 903 /* Send more if we have any */ 904 if (sbavail(&pcb->so->so_snd) > 0) 905 if (ng_btsocket_sco_send2(pcb) == 0) 906 ng_btsocket_sco_timeout(pcb); 907 908 /* Wake up writers */ 909 sowwakeup(pcb->so); 910 } 911 912 mtx_unlock(&pcb->pcb_mtx); 913 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 914 } break; 915 916 default: 917 NG_BTSOCKET_SCO_WARN( 918 "%s: Unknown message, cmd=%d\n", __func__, msg->header.cmd); 919 break; 920 } 921 922 NG_FREE_MSG(msg); /* Checks for msg != NULL */ 923 } /* ng_btsocket_sco_default_msg_input */ 924 925 /* 926 * SCO sockets LP message input routine 927 */ 928 929 static void 930 ng_btsocket_sco_lp_msg_input(struct ng_mesg *msg, hook_p hook) 931 { 932 ng_btsocket_sco_rtentry_p rt = NULL; 933 934 if (hook == NULL) { 935 NG_BTSOCKET_SCO_ALERT( 936 "%s: Invalid source hook for LP message\n", __func__); 937 goto drop; 938 } 939 940 rt = (ng_btsocket_sco_rtentry_p) NG_HOOK_PRIVATE(hook); 941 if (rt == NULL) { 942 NG_BTSOCKET_SCO_ALERT( 943 "%s: Could not find out source bdaddr for LP message\n", __func__); 944 goto drop; 945 } 946 947 switch (msg->header.cmd) { 948 case NGM_HCI_LP_CON_CFM: /* Connection Confirmation Event */ 949 ng_btsocket_sco_process_lp_con_cfm(msg, rt); 950 break; 951 952 case NGM_HCI_LP_CON_IND: /* Connection Indication Event */ 953 ng_btsocket_sco_process_lp_con_ind(msg, rt); 954 break; 955 956 case NGM_HCI_LP_DISCON_IND: /* Disconnection Indication Event */ 957 ng_btsocket_sco_process_lp_discon_ind(msg, rt); 958 break; 959 960 /* XXX FIXME add other LP messages */ 961 962 default: 963 NG_BTSOCKET_SCO_WARN( 964 "%s: Unknown LP message, cmd=%d\n", __func__, msg->header.cmd); 965 break; 966 } 967 drop: 968 NG_FREE_MSG(msg); 969 } /* ng_btsocket_sco_lp_msg_input */ 970 971 /* 972 * SCO sockets input routine 973 */ 974 975 static void 976 ng_btsocket_sco_input(void *context, int pending) 977 { 978 item_p item = NULL; 979 hook_p hook = NULL; 980 981 for (;;) { 982 mtx_lock(&ng_btsocket_sco_queue_mtx); 983 NG_BT_ITEMQ_DEQUEUE(&ng_btsocket_sco_queue, item); 984 mtx_unlock(&ng_btsocket_sco_queue_mtx); 985 986 if (item == NULL) 987 break; 988 989 NGI_GET_HOOK(item, hook); 990 if (hook != NULL && NG_HOOK_NOT_VALID(hook)) 991 goto drop; 992 993 switch(item->el_flags & NGQF_TYPE) { 994 case NGQF_DATA: { 995 struct mbuf *m = NULL; 996 997 NGI_GET_M(item, m); 998 ng_btsocket_sco_data_input(m, hook); 999 } break; 1000 1001 case NGQF_MESG: { 1002 struct ng_mesg *msg = NULL; 1003 1004 NGI_GET_MSG(item, msg); 1005 1006 switch (msg->header.cmd) { 1007 case NGM_HCI_LP_CON_CFM: 1008 case NGM_HCI_LP_CON_IND: 1009 case NGM_HCI_LP_DISCON_IND: 1010 /* XXX FIXME add other LP messages */ 1011 ng_btsocket_sco_lp_msg_input(msg, hook); 1012 break; 1013 1014 default: 1015 ng_btsocket_sco_default_msg_input(msg, hook); 1016 break; 1017 } 1018 } break; 1019 1020 default: 1021 KASSERT(0, 1022 ("%s: invalid item type=%ld\n", __func__, (item->el_flags & NGQF_TYPE))); 1023 break; 1024 } 1025 drop: 1026 if (hook != NULL) 1027 NG_HOOK_UNREF(hook); 1028 1029 NG_FREE_ITEM(item); 1030 } 1031 } /* ng_btsocket_sco_input */ 1032 1033 /* 1034 * Route cleanup task. Gets scheduled when hook is disconnected. Here we 1035 * will find all sockets that use "invalid" hook and disconnect them. 1036 */ 1037 1038 static void 1039 ng_btsocket_sco_rtclean(void *context, int pending) 1040 { 1041 ng_btsocket_sco_pcb_p pcb = NULL, pcb_next = NULL; 1042 ng_btsocket_sco_rtentry_p rt = NULL; 1043 1044 /* 1045 * First disconnect all sockets that use "invalid" hook 1046 */ 1047 1048 mtx_lock(&ng_btsocket_sco_sockets_mtx); 1049 1050 for(pcb = LIST_FIRST(&ng_btsocket_sco_sockets); pcb != NULL; ) { 1051 mtx_lock(&pcb->pcb_mtx); 1052 pcb_next = LIST_NEXT(pcb, next); 1053 1054 if (pcb->rt != NULL && 1055 pcb->rt->hook != NULL && NG_HOOK_NOT_VALID(pcb->rt->hook)) { 1056 if (pcb->flags & NG_BTSOCKET_SCO_TIMO) 1057 ng_btsocket_sco_untimeout(pcb); 1058 1059 pcb->rt = NULL; 1060 pcb->so->so_error = ENETDOWN; 1061 pcb->state = NG_BTSOCKET_SCO_CLOSED; 1062 soisdisconnected(pcb->so); 1063 } 1064 1065 mtx_unlock(&pcb->pcb_mtx); 1066 pcb = pcb_next; 1067 } 1068 1069 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 1070 1071 /* 1072 * Now cleanup routing table 1073 */ 1074 1075 mtx_lock(&ng_btsocket_sco_rt_mtx); 1076 1077 for (rt = LIST_FIRST(&ng_btsocket_sco_rt); rt != NULL; ) { 1078 ng_btsocket_sco_rtentry_p rt_next = LIST_NEXT(rt, next); 1079 1080 if (rt->hook != NULL && NG_HOOK_NOT_VALID(rt->hook)) { 1081 LIST_REMOVE(rt, next); 1082 1083 NG_HOOK_SET_PRIVATE(rt->hook, NULL); 1084 NG_HOOK_UNREF(rt->hook); /* Remove extra reference */ 1085 1086 bzero(rt, sizeof(*rt)); 1087 free(rt, M_NETGRAPH_BTSOCKET_SCO); 1088 } 1089 1090 rt = rt_next; 1091 } 1092 1093 mtx_unlock(&ng_btsocket_sco_rt_mtx); 1094 } /* ng_btsocket_sco_rtclean */ 1095 1096 /* 1097 * Initialize everything 1098 */ 1099 1100 void 1101 ng_btsocket_sco_init(void) 1102 { 1103 int error = 0; 1104 1105 /* Skip initialization of globals for non-default instances. */ 1106 if (!IS_DEFAULT_VNET(curvnet)) 1107 return; 1108 1109 ng_btsocket_sco_node = NULL; 1110 ng_btsocket_sco_debug_level = NG_BTSOCKET_WARN_LEVEL; 1111 1112 /* Register Netgraph node type */ 1113 error = ng_newtype(&typestruct); 1114 if (error != 0) { 1115 NG_BTSOCKET_SCO_ALERT( 1116 "%s: Could not register Netgraph node type, error=%d\n", __func__, error); 1117 1118 return; 1119 } 1120 1121 /* Create Netgrapg node */ 1122 error = ng_make_node_common(&typestruct, &ng_btsocket_sco_node); 1123 if (error != 0) { 1124 NG_BTSOCKET_SCO_ALERT( 1125 "%s: Could not create Netgraph node, error=%d\n", __func__, error); 1126 1127 ng_btsocket_sco_node = NULL; 1128 1129 return; 1130 } 1131 1132 error = ng_name_node(ng_btsocket_sco_node, NG_BTSOCKET_SCO_NODE_TYPE); 1133 if (error != 0) { 1134 NG_BTSOCKET_SCO_ALERT( 1135 "%s: Could not name Netgraph node, error=%d\n", __func__, error); 1136 1137 NG_NODE_UNREF(ng_btsocket_sco_node); 1138 ng_btsocket_sco_node = NULL; 1139 1140 return; 1141 } 1142 1143 /* Create input queue */ 1144 NG_BT_ITEMQ_INIT(&ng_btsocket_sco_queue, 300); 1145 mtx_init(&ng_btsocket_sco_queue_mtx, 1146 "btsocks_sco_queue_mtx", NULL, MTX_DEF); 1147 TASK_INIT(&ng_btsocket_sco_queue_task, 0, 1148 ng_btsocket_sco_input, NULL); 1149 1150 /* Create list of sockets */ 1151 LIST_INIT(&ng_btsocket_sco_sockets); 1152 mtx_init(&ng_btsocket_sco_sockets_mtx, 1153 "btsocks_sco_sockets_mtx", NULL, MTX_DEF); 1154 1155 /* Routing table */ 1156 LIST_INIT(&ng_btsocket_sco_rt); 1157 mtx_init(&ng_btsocket_sco_rt_mtx, 1158 "btsocks_sco_rt_mtx", NULL, MTX_DEF); 1159 TASK_INIT(&ng_btsocket_sco_rt_task, 0, 1160 ng_btsocket_sco_rtclean, NULL); 1161 } /* ng_btsocket_sco_init */ 1162 1163 /* 1164 * Abort connection on socket 1165 */ 1166 1167 void 1168 ng_btsocket_sco_abort(struct socket *so) 1169 { 1170 so->so_error = ECONNABORTED; 1171 1172 (void) ng_btsocket_sco_disconnect(so); 1173 } /* ng_btsocket_sco_abort */ 1174 1175 void 1176 ng_btsocket_sco_close(struct socket *so) 1177 { 1178 (void) ng_btsocket_sco_disconnect(so); 1179 } /* ng_btsocket_sco_close */ 1180 1181 /* 1182 * Accept connection on socket. Nothing to do here, socket must be connected 1183 * and ready, so just return peer address and be done with it. 1184 */ 1185 1186 int 1187 ng_btsocket_sco_accept(struct socket *so, struct sockaddr **nam) 1188 { 1189 if (ng_btsocket_sco_node == NULL) 1190 return (EINVAL); 1191 1192 return (ng_btsocket_sco_peeraddr(so, nam)); 1193 } /* ng_btsocket_sco_accept */ 1194 1195 /* 1196 * Create and attach new socket 1197 */ 1198 1199 int 1200 ng_btsocket_sco_attach(struct socket *so, int proto, struct thread *td) 1201 { 1202 ng_btsocket_sco_pcb_p pcb = so2sco_pcb(so); 1203 int error; 1204 1205 /* Check socket and protocol */ 1206 if (ng_btsocket_sco_node == NULL) 1207 return (EPROTONOSUPPORT); 1208 if (so->so_type != SOCK_SEQPACKET) 1209 return (ESOCKTNOSUPPORT); 1210 1211 #if 0 /* XXX sonewconn() calls "pru_attach" with proto == 0 */ 1212 if (proto != 0) 1213 if (proto != BLUETOOTH_PROTO_SCO) 1214 return (EPROTONOSUPPORT); 1215 #endif /* XXX */ 1216 1217 if (pcb != NULL) 1218 return (EISCONN); 1219 1220 /* Reserve send and receive space if it is not reserved yet */ 1221 if ((so->so_snd.sb_hiwat == 0) || (so->so_rcv.sb_hiwat == 0)) { 1222 error = soreserve(so, NG_BTSOCKET_SCO_SENDSPACE, 1223 NG_BTSOCKET_SCO_RECVSPACE); 1224 if (error != 0) 1225 return (error); 1226 } 1227 1228 /* Allocate the PCB */ 1229 pcb = malloc(sizeof(*pcb), 1230 M_NETGRAPH_BTSOCKET_SCO, M_NOWAIT | M_ZERO); 1231 if (pcb == NULL) 1232 return (ENOMEM); 1233 1234 /* Link the PCB and the socket */ 1235 so->so_pcb = (caddr_t) pcb; 1236 pcb->so = so; 1237 pcb->state = NG_BTSOCKET_SCO_CLOSED; 1238 1239 callout_init(&pcb->timo, 1); 1240 1241 /* 1242 * Mark PCB mutex as DUPOK to prevent "duplicated lock of 1243 * the same type" message. When accepting new SCO connection 1244 * ng_btsocket_sco_process_lp_con_ind() holds both PCB mutexes 1245 * for "old" (accepting) PCB and "new" (created) PCB. 1246 */ 1247 1248 mtx_init(&pcb->pcb_mtx, "btsocks_sco_pcb_mtx", NULL, 1249 MTX_DEF|MTX_DUPOK); 1250 1251 /* 1252 * Add the PCB to the list 1253 * 1254 * XXX FIXME VERY IMPORTANT! 1255 * 1256 * This is totally FUBAR. We could get here in two cases: 1257 * 1258 * 1) When user calls socket() 1259 * 2) When we need to accept new incoming connection and call 1260 * sonewconn() 1261 * 1262 * In the first case we must acquire ng_btsocket_sco_sockets_mtx. 1263 * In the second case we hold ng_btsocket_sco_sockets_mtx already. 1264 * So we now need to distinguish between these cases. From reading 1265 * /sys/kern/uipc_socket2.c we can find out that sonewconn() calls 1266 * pru_attach with proto == 0 and td == NULL. For now use this fact 1267 * to figure out if we were called from socket() or from sonewconn(). 1268 */ 1269 1270 if (td != NULL) 1271 mtx_lock(&ng_btsocket_sco_sockets_mtx); 1272 else 1273 mtx_assert(&ng_btsocket_sco_sockets_mtx, MA_OWNED); 1274 1275 LIST_INSERT_HEAD(&ng_btsocket_sco_sockets, pcb, next); 1276 1277 if (td != NULL) 1278 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 1279 1280 return (0); 1281 } /* ng_btsocket_sco_attach */ 1282 1283 /* 1284 * Bind socket 1285 */ 1286 1287 int 1288 ng_btsocket_sco_bind(struct socket *so, struct sockaddr *nam, 1289 struct thread *td) 1290 { 1291 ng_btsocket_sco_pcb_t *pcb = NULL; 1292 struct sockaddr_sco *sa = (struct sockaddr_sco *) nam; 1293 1294 if (ng_btsocket_sco_node == NULL) 1295 return (EINVAL); 1296 1297 /* Verify address */ 1298 if (sa == NULL) 1299 return (EINVAL); 1300 if (sa->sco_family != AF_BLUETOOTH) 1301 return (EAFNOSUPPORT); 1302 if (sa->sco_len != sizeof(*sa)) 1303 return (EINVAL); 1304 1305 mtx_lock(&ng_btsocket_sco_sockets_mtx); 1306 1307 /* 1308 * Check if other socket has this address already (look for exact 1309 * match in bdaddr) and assign socket address if it's available. 1310 */ 1311 1312 if (bcmp(&sa->sco_bdaddr, NG_HCI_BDADDR_ANY, sizeof(sa->sco_bdaddr)) != 0) { 1313 LIST_FOREACH(pcb, &ng_btsocket_sco_sockets, next) { 1314 mtx_lock(&pcb->pcb_mtx); 1315 1316 if (bcmp(&pcb->src, &sa->sco_bdaddr, sizeof(bdaddr_t)) == 0) { 1317 mtx_unlock(&pcb->pcb_mtx); 1318 mtx_unlock(&ng_btsocket_sco_sockets_mtx); 1319 1320 return (EADDRINUSE); 1321 } 1322 1323 mtx_unlock(&pcb->pcb_mtx); 1324 } 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 1983