1/* 2 * ng_btsocket_l2cap.c 3 */ 4 5/*- 6 * SPDX-License-Identifier: BSD-2-Clause 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_l2cap.c,v 1.16 2003/09/14 23:29:06 max Exp $ 33 */ 34 35#include <sys/param.h> 36#include <sys/systm.h> 37#include <sys/bitstring.h> 38#include <sys/domain.h> 39#include <sys/endian.h> 40#include <sys/errno.h> 41#include <sys/filedesc.h> 42#include <sys/ioccom.h> 43#include <sys/kernel.h> 44#include <sys/lock.h> 45#include <sys/malloc.h> 46#include <sys/mbuf.h> 47#include <sys/mutex.h> 48#include <sys/protosw.h> 49#include <sys/queue.h> 50#include <sys/socket.h> 51#include <sys/socketvar.h> 52#include <sys/sysctl.h> 53#include <sys/taskqueue.h> 54 55#include <net/vnet.h> 56 57#include <netgraph/ng_message.h> 58#include <netgraph/netgraph.h> 59#include <netgraph/bluetooth/include/ng_bluetooth.h> 60#include <netgraph/bluetooth/include/ng_hci.h> 61#include <netgraph/bluetooth/include/ng_l2cap.h> 62#include <netgraph/bluetooth/include/ng_btsocket.h> 63#include <netgraph/bluetooth/include/ng_btsocket_l2cap.h> 64 65/* MALLOC define */ 66#ifdef NG_SEPARATE_MALLOC 67static MALLOC_DEFINE(M_NETGRAPH_BTSOCKET_L2CAP, "netgraph_btsocks_l2cap", 68 "Netgraph Bluetooth L2CAP sockets"); 69#else 70#define M_NETGRAPH_BTSOCKET_L2CAP M_NETGRAPH 71#endif /* NG_SEPARATE_MALLOC */ 72 73/* Netgraph node methods */ 74static ng_constructor_t ng_btsocket_l2cap_node_constructor; 75static ng_rcvmsg_t ng_btsocket_l2cap_node_rcvmsg; 76static ng_shutdown_t ng_btsocket_l2cap_node_shutdown; 77static ng_newhook_t ng_btsocket_l2cap_node_newhook; 78static ng_connect_t ng_btsocket_l2cap_node_connect; 79static ng_rcvdata_t ng_btsocket_l2cap_node_rcvdata; 80static ng_disconnect_t ng_btsocket_l2cap_node_disconnect; 81 82static void ng_btsocket_l2cap_input (void *, int); 83static void ng_btsocket_l2cap_rtclean (void *, int); 84 85/* Netgraph type descriptor */ 86static struct ng_type typestruct = { 87 .version = NG_ABI_VERSION, 88 .name = NG_BTSOCKET_L2CAP_NODE_TYPE, 89 .constructor = ng_btsocket_l2cap_node_constructor, 90 .rcvmsg = ng_btsocket_l2cap_node_rcvmsg, 91 .shutdown = ng_btsocket_l2cap_node_shutdown, 92 .newhook = ng_btsocket_l2cap_node_newhook, 93 .connect = ng_btsocket_l2cap_node_connect, 94 .rcvdata = ng_btsocket_l2cap_node_rcvdata, 95 .disconnect = ng_btsocket_l2cap_node_disconnect, 96}; 97 98/* Globals */ 99extern int ifqmaxlen; 100static u_int32_t ng_btsocket_l2cap_debug_level; 101static node_p ng_btsocket_l2cap_node; 102static struct ng_bt_itemq ng_btsocket_l2cap_queue; 103static struct mtx ng_btsocket_l2cap_queue_mtx; 104static struct task ng_btsocket_l2cap_queue_task; 105static LIST_HEAD(, ng_btsocket_l2cap_pcb) ng_btsocket_l2cap_sockets; 106static struct mtx ng_btsocket_l2cap_sockets_mtx; 107static LIST_HEAD(, ng_btsocket_l2cap_rtentry) ng_btsocket_l2cap_rt; 108static struct mtx ng_btsocket_l2cap_rt_mtx; 109static struct task ng_btsocket_l2cap_rt_task; 110static struct timeval ng_btsocket_l2cap_lasttime; 111static int ng_btsocket_l2cap_curpps; 112 113/* Sysctl tree */ 114SYSCTL_DECL(_net_bluetooth_l2cap_sockets); 115static SYSCTL_NODE(_net_bluetooth_l2cap_sockets, OID_AUTO, seq, 116 CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 117 "Bluetooth SEQPACKET L2CAP sockets family"); 118SYSCTL_UINT(_net_bluetooth_l2cap_sockets_seq, OID_AUTO, debug_level, 119 CTLFLAG_RW, 120 &ng_btsocket_l2cap_debug_level, NG_BTSOCKET_WARN_LEVEL, 121 "Bluetooth SEQPACKET L2CAP sockets debug level"); 122SYSCTL_UINT(_net_bluetooth_l2cap_sockets_seq, OID_AUTO, queue_len, 123 CTLFLAG_RD, 124 &ng_btsocket_l2cap_queue.len, 0, 125 "Bluetooth SEQPACKET L2CAP sockets input queue length"); 126SYSCTL_UINT(_net_bluetooth_l2cap_sockets_seq, OID_AUTO, queue_maxlen, 127 CTLFLAG_RD, 128 &ng_btsocket_l2cap_queue.maxlen, 0, 129 "Bluetooth SEQPACKET L2CAP sockets input queue max. length"); 130SYSCTL_UINT(_net_bluetooth_l2cap_sockets_seq, OID_AUTO, queue_drops, 131 CTLFLAG_RD, 132 &ng_btsocket_l2cap_queue.drops, 0, 133 "Bluetooth SEQPACKET L2CAP sockets input queue drops"); 134 135/* Debug */ 136#define NG_BTSOCKET_L2CAP_INFO \ 137 if (ng_btsocket_l2cap_debug_level >= NG_BTSOCKET_INFO_LEVEL && \ 138 ppsratecheck(&ng_btsocket_l2cap_lasttime, &ng_btsocket_l2cap_curpps, 1)) \ 139 printf 140 141#define NG_BTSOCKET_L2CAP_WARN \ 142 if (ng_btsocket_l2cap_debug_level >= NG_BTSOCKET_WARN_LEVEL && \ 143 ppsratecheck(&ng_btsocket_l2cap_lasttime, &ng_btsocket_l2cap_curpps, 1)) \ 144 printf 145 146#define NG_BTSOCKET_L2CAP_ERR \ 147 if (ng_btsocket_l2cap_debug_level >= NG_BTSOCKET_ERR_LEVEL && \ 148 ppsratecheck(&ng_btsocket_l2cap_lasttime, &ng_btsocket_l2cap_curpps, 1)) \ 149 printf 150 151#define NG_BTSOCKET_L2CAP_ALERT \ 152 if (ng_btsocket_l2cap_debug_level >= NG_BTSOCKET_ALERT_LEVEL && \ 153 ppsratecheck(&ng_btsocket_l2cap_lasttime, &ng_btsocket_l2cap_curpps, 1)) \ 154 printf 155 156/* 157 * Netgraph message processing routines 158 */ 159 160static int ng_btsocket_l2cap_process_l2ca_con_req_rsp 161 (struct ng_mesg *, ng_btsocket_l2cap_rtentry_p); 162static int ng_btsocket_l2cap_process_l2ca_con_rsp_rsp 163 (struct ng_mesg *, ng_btsocket_l2cap_rtentry_p); 164static int ng_btsocket_l2cap_process_l2ca_con_ind 165 (struct ng_mesg *, ng_btsocket_l2cap_rtentry_p); 166 167static int ng_btsocket_l2cap_process_l2ca_cfg_req_rsp 168 (struct ng_mesg *, ng_btsocket_l2cap_rtentry_p); 169static int ng_btsocket_l2cap_process_l2ca_cfg_rsp_rsp 170 (struct ng_mesg *, ng_btsocket_l2cap_rtentry_p); 171static int ng_btsocket_l2cap_process_l2ca_cfg_ind 172 (struct ng_mesg *, ng_btsocket_l2cap_rtentry_p); 173 174static int ng_btsocket_l2cap_process_l2ca_discon_rsp 175 (struct ng_mesg *, ng_btsocket_l2cap_rtentry_p); 176static int ng_btsocket_l2cap_process_l2ca_discon_ind 177 (struct ng_mesg *, ng_btsocket_l2cap_rtentry_p); 178 179static int ng_btsocket_l2cap_process_l2ca_write_rsp 180 (struct ng_mesg *, ng_btsocket_l2cap_rtentry_p); 181 182/* 183 * Send L2CA_xxx messages to the lower layer 184 */ 185 186static int ng_btsocket_l2cap_send_l2ca_con_req 187 (ng_btsocket_l2cap_pcb_p); 188static int ng_btsocket_l2cap_send_l2ca_con_rsp_req 189 (u_int32_t, ng_btsocket_l2cap_rtentry_p, bdaddr_p, int, int, int, int); 190static int ng_btsocket_l2cap_send_l2ca_cfg_req 191 (ng_btsocket_l2cap_pcb_p); 192static int ng_btsocket_l2cap_send_l2ca_cfg_rsp 193 (ng_btsocket_l2cap_pcb_p); 194static int ng_btsocket_l2cap_send_l2ca_discon_req 195 (u_int32_t, ng_btsocket_l2cap_pcb_p); 196 197static int ng_btsocket_l2cap_send2 198 (ng_btsocket_l2cap_pcb_p); 199 200/* 201 * Timeout processing routines 202 */ 203 204static void ng_btsocket_l2cap_timeout (ng_btsocket_l2cap_pcb_p); 205static void ng_btsocket_l2cap_untimeout (ng_btsocket_l2cap_pcb_p); 206static void ng_btsocket_l2cap_process_timeout (void *); 207 208/* 209 * Other stuff 210 */ 211 212static ng_btsocket_l2cap_pcb_p ng_btsocket_l2cap_pcb_by_addr(bdaddr_p, int); 213static ng_btsocket_l2cap_pcb_p ng_btsocket_l2cap_pcb_by_token(u_int32_t); 214static ng_btsocket_l2cap_pcb_p ng_btsocket_l2cap_pcb_by_cid (bdaddr_p, int,int); 215static int ng_btsocket_l2cap_result2errno(int); 216 217static int ng_btsock_l2cap_addrtype_to_linktype(int addrtype); 218 219#define ng_btsocket_l2cap_wakeup_input_task() \ 220 taskqueue_enqueue(taskqueue_swi_giant, &ng_btsocket_l2cap_queue_task) 221 222#define ng_btsocket_l2cap_wakeup_route_task() \ 223 taskqueue_enqueue(taskqueue_swi_giant, &ng_btsocket_l2cap_rt_task) 224 225int ng_btsock_l2cap_addrtype_to_linktype(int addrtype) 226{ 227 switch(addrtype){ 228 case BDADDR_LE_PUBLIC: 229 return NG_HCI_LINK_LE_PUBLIC; 230 case BDADDR_LE_RANDOM: 231 return NG_HCI_LINK_LE_RANDOM; 232 default: 233 return NG_HCI_LINK_ACL; 234 } 235} 236 237/***************************************************************************** 238 ***************************************************************************** 239 ** Netgraph node interface 240 ***************************************************************************** 241 *****************************************************************************/ 242 243/* 244 * Netgraph node constructor. Do not allow to create node of this type. 245 */ 246 247static int 248ng_btsocket_l2cap_node_constructor(node_p node) 249{ 250 return (EINVAL); 251} /* ng_btsocket_l2cap_node_constructor */ 252 253/* 254 * Do local shutdown processing. Let old node go and create new fresh one. 255 */ 256 257static int 258ng_btsocket_l2cap_node_shutdown(node_p node) 259{ 260 int error = 0; 261 262 NG_NODE_UNREF(node); 263 264 /* Create new node */ 265 error = ng_make_node_common(&typestruct, &ng_btsocket_l2cap_node); 266 if (error != 0) { 267 NG_BTSOCKET_L2CAP_ALERT( 268"%s: Could not create Netgraph node, error=%d\n", __func__, error); 269 270 ng_btsocket_l2cap_node = NULL; 271 272 return (error); 273 } 274 275 error = ng_name_node(ng_btsocket_l2cap_node, 276 NG_BTSOCKET_L2CAP_NODE_TYPE); 277 if (error != 0) { 278 NG_BTSOCKET_L2CAP_ALERT( 279"%s: Could not name Netgraph node, error=%d\n", __func__, error); 280 281 NG_NODE_UNREF(ng_btsocket_l2cap_node); 282 ng_btsocket_l2cap_node = NULL; 283 284 return (error); 285 } 286 287 return (0); 288} /* ng_btsocket_l2cap_node_shutdown */ 289 290/* 291 * We allow any hook to be connected to the node. 292 */ 293 294static int 295ng_btsocket_l2cap_node_newhook(node_p node, hook_p hook, char const *name) 296{ 297 return (0); 298} /* ng_btsocket_l2cap_node_newhook */ 299 300/* 301 * Just say "YEP, that's OK by me!" 302 */ 303 304static int 305ng_btsocket_l2cap_node_connect(hook_p hook) 306{ 307 NG_HOOK_SET_PRIVATE(hook, NULL); 308 NG_HOOK_REF(hook); /* Keep extra reference to the hook */ 309 310#if 0 311 NG_HOOK_FORCE_QUEUE(NG_HOOK_PEER(hook)); 312 NG_HOOK_FORCE_QUEUE(hook); 313#endif 314 315 return (0); 316} /* ng_btsocket_l2cap_node_connect */ 317 318/* 319 * Hook disconnection. Schedule route cleanup task 320 */ 321 322static int 323ng_btsocket_l2cap_node_disconnect(hook_p hook) 324{ 325 /* 326 * If hook has private information than we must have this hook in 327 * the routing table and must schedule cleaning for the routing table. 328 * Otherwise hook was connected but we never got "hook_info" message, 329 * so we have never added this hook to the routing table and it save 330 * to just delete it. 331 */ 332 333 if (NG_HOOK_PRIVATE(hook) != NULL) 334 return (ng_btsocket_l2cap_wakeup_route_task()); 335 336 NG_HOOK_UNREF(hook); /* Remove extra reference */ 337 338 return (0); 339} /* ng_btsocket_l2cap_node_disconnect */ 340 341/* 342 * Process incoming messages 343 */ 344 345static int 346ng_btsocket_l2cap_node_rcvmsg(node_p node, item_p item, hook_p hook) 347{ 348 struct ng_mesg *msg = NGI_MSG(item); /* item still has message */ 349 int error = 0; 350 351 if (msg != NULL && msg->header.typecookie == NGM_L2CAP_COOKIE) { 352 mtx_lock(&ng_btsocket_l2cap_queue_mtx); 353 if (NG_BT_ITEMQ_FULL(&ng_btsocket_l2cap_queue)) { 354 NG_BTSOCKET_L2CAP_ERR( 355"%s: Input queue is full (msg)\n", __func__); 356 357 NG_BT_ITEMQ_DROP(&ng_btsocket_l2cap_queue); 358 NG_FREE_ITEM(item); 359 error = ENOBUFS; 360 } else { 361 if (hook != NULL) { 362 NG_HOOK_REF(hook); 363 NGI_SET_HOOK(item, hook); 364 } 365 366 NG_BT_ITEMQ_ENQUEUE(&ng_btsocket_l2cap_queue, item); 367 error = ng_btsocket_l2cap_wakeup_input_task(); 368 } 369 mtx_unlock(&ng_btsocket_l2cap_queue_mtx); 370 } else { 371 NG_FREE_ITEM(item); 372 error = EINVAL; 373 } 374 375 return (error); 376} /* ng_btsocket_l2cap_node_rcvmsg */ 377 378/* 379 * Receive data on a hook 380 */ 381 382static int 383ng_btsocket_l2cap_node_rcvdata(hook_p hook, item_p item) 384{ 385 int error = 0; 386 387 mtx_lock(&ng_btsocket_l2cap_queue_mtx); 388 if (NG_BT_ITEMQ_FULL(&ng_btsocket_l2cap_queue)) { 389 NG_BTSOCKET_L2CAP_ERR( 390"%s: Input queue is full (data)\n", __func__); 391 392 NG_BT_ITEMQ_DROP(&ng_btsocket_l2cap_queue); 393 NG_FREE_ITEM(item); 394 error = ENOBUFS; 395 } else { 396 NG_HOOK_REF(hook); 397 NGI_SET_HOOK(item, hook); 398 399 NG_BT_ITEMQ_ENQUEUE(&ng_btsocket_l2cap_queue, item); 400 error = ng_btsocket_l2cap_wakeup_input_task(); 401 } 402 mtx_unlock(&ng_btsocket_l2cap_queue_mtx); 403 404 return (error); 405} /* ng_btsocket_l2cap_node_rcvdata */ 406 407/* 408 * Process L2CA_Connect respose. Socket layer must have initiated connection, 409 * so we have to have a socket associated with message token. 410 */ 411 412static int 413ng_btsocket_l2cap_process_l2ca_con_req_rsp(struct ng_mesg *msg, 414 ng_btsocket_l2cap_rtentry_p rt) 415{ 416 ng_l2cap_l2ca_con_op *op = NULL; 417 ng_btsocket_l2cap_pcb_t *pcb = NULL; 418 int error = 0; 419 420 if (msg->header.arglen != sizeof(*op)) 421 return (EMSGSIZE); 422 423 op = (ng_l2cap_l2ca_con_op *)(msg->data); 424 425 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 426 427 /* Look for the socket with the token */ 428 pcb = ng_btsocket_l2cap_pcb_by_token(msg->header.token); 429 if (pcb == NULL) { 430 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 431 return (ENOENT); 432 } 433 434 mtx_lock(&pcb->pcb_mtx); 435 436 NG_BTSOCKET_L2CAP_INFO( 437"%s: Got L2CA_Connect response, token=%d, src bdaddr=%x:%x:%x:%x:%x:%x, " \ 438"dst bdaddr=%x:%x:%x:%x:%x:%x, psm=%d, lcid=%d, result=%d, status=%d, " \ 439"state=%d\n", __func__, msg->header.token, 440 pcb->src.b[5], pcb->src.b[4], pcb->src.b[3], 441 pcb->src.b[2], pcb->src.b[1], pcb->src.b[0], 442 pcb->dst.b[5], pcb->dst.b[4], pcb->dst.b[3], 443 pcb->dst.b[2], pcb->dst.b[1], pcb->dst.b[0], 444 pcb->psm, op->lcid, op->result, op->status, 445 pcb->state); 446 447 if (pcb->state != NG_BTSOCKET_L2CAP_CONNECTING) { 448 mtx_unlock(&pcb->pcb_mtx); 449 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 450 451 return (ENOENT); 452 } 453 454 ng_btsocket_l2cap_untimeout(pcb); 455 456 if (op->result == NG_L2CAP_PENDING) { 457 ng_btsocket_l2cap_timeout(pcb); 458 mtx_unlock(&pcb->pcb_mtx); 459 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 460 461 return (0); 462 } 463 464 if (op->result == NG_L2CAP_SUCCESS){ 465 if((pcb->idtype == NG_L2CAP_L2CA_IDTYPE_ATT)|| 466 (pcb->idtype == NG_L2CAP_L2CA_IDTYPE_SMP)){ 467 pcb->encryption = op->encryption; pcb->cid = op->lcid; 468 if(pcb->need_encrypt && !(pcb->encryption)){ 469 ng_btsocket_l2cap_timeout(pcb); 470 pcb->state = NG_BTSOCKET_L2CAP_W4_ENC_CHANGE; 471 }else{ 472 pcb->state = NG_BTSOCKET_L2CAP_OPEN; 473 soisconnected(pcb->so); 474 } 475 }else{ 476 /* 477 * Channel is now open, so update local channel ID and 478 * start configuration process. Source and destination 479 * addresses as well as route must be already set. 480 */ 481 482 pcb->cid = op->lcid; 483 pcb->encryption = op->encryption; 484 error = ng_btsocket_l2cap_send_l2ca_cfg_req(pcb); 485 if (error != 0) { 486 /* Send disconnect request with "zero" token */ 487 ng_btsocket_l2cap_send_l2ca_discon_req(0, pcb); 488 489 /* ... and close the socket */ 490 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 491 soisdisconnected(pcb->so); 492 } else { 493 pcb->cfg_state = NG_BTSOCKET_L2CAP_CFG_IN_SENT; 494 pcb->state = NG_BTSOCKET_L2CAP_CONFIGURING; 495 496 ng_btsocket_l2cap_timeout(pcb); 497 } 498 } 499 } else { 500 /* 501 * We have failed to open connection, so convert result 502 * code to "errno" code and disconnect the socket. Channel 503 * already has been closed. 504 */ 505 506 pcb->so->so_error = ng_btsocket_l2cap_result2errno(op->result); 507 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 508 soisdisconnected(pcb->so); 509 } 510 mtx_unlock(&pcb->pcb_mtx); 511 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 512 513 return (error); 514} /* ng_btsocket_l2cap_process_l2ca_con_req_rsp */ 515 516/* 517 * Process L2CA_ConnectRsp response 518 */ 519 520static int 521ng_btsocket_l2cap_process_l2ca_con_rsp_rsp(struct ng_mesg *msg, 522 ng_btsocket_l2cap_rtentry_p rt) 523{ 524 ng_l2cap_l2ca_con_rsp_op *op = NULL; 525 ng_btsocket_l2cap_pcb_t *pcb = NULL; 526 527 if (msg->header.arglen != sizeof(*op)) 528 return (EMSGSIZE); 529 530 op = (ng_l2cap_l2ca_con_rsp_op *)(msg->data); 531 532 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 533 534 /* Look for the socket with the token */ 535 pcb = ng_btsocket_l2cap_pcb_by_token(msg->header.token); 536 if (pcb == NULL) { 537 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 538 return (ENOENT); 539 } 540 541 mtx_lock(&pcb->pcb_mtx); 542 543 NG_BTSOCKET_L2CAP_INFO( 544"%s: Got L2CA_ConnectRsp response, token=%d, src bdaddr=%x:%x:%x:%x:%x:%x, " \ 545"dst bdaddr=%x:%x:%x:%x:%x:%x, psm=%d, lcid=%d, result=%d, state=%d\n", 546 __func__, msg->header.token, 547 pcb->src.b[5], pcb->src.b[4], pcb->src.b[3], 548 pcb->src.b[2], pcb->src.b[1], pcb->src.b[0], 549 pcb->dst.b[5], pcb->dst.b[4], pcb->dst.b[3], 550 pcb->dst.b[2], pcb->dst.b[1], pcb->dst.b[0], 551 pcb->psm, pcb->cid, op->result, pcb->state); 552 553 if (pcb->state != NG_BTSOCKET_L2CAP_CONNECTING) { 554 mtx_unlock(&pcb->pcb_mtx); 555 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 556 557 return (ENOENT); 558 } 559 560 ng_btsocket_l2cap_untimeout(pcb); 561 562 /* Check the result and disconnect the socket on failure */ 563 if (op->result != NG_L2CAP_SUCCESS) { 564 /* Close the socket - channel already closed */ 565 pcb->so->so_error = ng_btsocket_l2cap_result2errno(op->result); 566 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 567 soisdisconnected(pcb->so); 568 } else { 569 /* Move to CONFIGURING state and wait for CONFIG_IND */ 570 pcb->cfg_state = 0; 571 pcb->state = NG_BTSOCKET_L2CAP_CONFIGURING; 572 ng_btsocket_l2cap_timeout(pcb); 573 } 574 575 mtx_unlock(&pcb->pcb_mtx); 576 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 577 578 return (0); 579} /* ng_btsocket_process_l2ca_con_rsp_rsp */ 580 581/* 582 * Process L2CA_Connect indicator. Find socket that listens on address 583 * and PSM. Find exact or closest match. Create new socket and initiate 584 * connection. 585 */ 586 587static int 588ng_btsocket_l2cap_process_l2ca_con_ind(struct ng_mesg *msg, 589 ng_btsocket_l2cap_rtentry_p rt) 590{ 591 ng_l2cap_l2ca_con_ind_ip *ip = NULL; 592 ng_btsocket_l2cap_pcb_t *pcb = NULL, *pcb1 = NULL; 593 int error = 0; 594 u_int32_t token = 0; 595 u_int16_t result = 0; 596 597 if (msg->header.arglen != sizeof(*ip)) 598 return (EMSGSIZE); 599 600 ip = (ng_l2cap_l2ca_con_ind_ip *)(msg->data); 601 602 NG_BTSOCKET_L2CAP_INFO( 603"%s: Got L2CA_Connect indicator, src bdaddr=%x:%x:%x:%x:%x:%x, " \ 604"dst bdaddr=%x:%x:%x:%x:%x:%x, psm=%d, lcid=%d, ident=%d\n", 605 __func__, 606 rt->src.b[5], rt->src.b[4], rt->src.b[3], 607 rt->src.b[2], rt->src.b[1], rt->src.b[0], 608 ip->bdaddr.b[5], ip->bdaddr.b[4], ip->bdaddr.b[3], 609 ip->bdaddr.b[2], ip->bdaddr.b[1], ip->bdaddr.b[0], 610 ip->psm, ip->lcid, ip->ident); 611 612 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 613 614 pcb = ng_btsocket_l2cap_pcb_by_addr(&rt->src, ip->psm); 615 if (pcb != NULL) { 616 struct socket *so1; 617 618 mtx_lock(&pcb->pcb_mtx); 619 620 CURVNET_SET(pcb->so->so_vnet); 621 so1 = sonewconn(pcb->so, 0); 622 CURVNET_RESTORE(); 623 if (so1 == NULL) { 624 result = NG_L2CAP_NO_RESOURCES; 625 goto respond; 626 } 627 628 /* 629 * If we got here than we have created new socket. So complete 630 * connection. If we we listening on specific address then copy 631 * source address from listening socket, otherwise copy source 632 * address from hook's routing information. 633 */ 634 635 pcb1 = so2l2cap_pcb(so1); 636 KASSERT((pcb1 != NULL), 637("%s: pcb1 == NULL\n", __func__)); 638 639 mtx_lock(&pcb1->pcb_mtx); 640 641 if (bcmp(&pcb->src, NG_HCI_BDADDR_ANY, sizeof(pcb->src)) != 0) 642 bcopy(&pcb->src, &pcb1->src, sizeof(pcb1->src)); 643 else 644 bcopy(&rt->src, &pcb1->src, sizeof(pcb1->src)); 645 646 pcb1->flags &= ~NG_BTSOCKET_L2CAP_CLIENT; 647 648 bcopy(&ip->bdaddr, &pcb1->dst, sizeof(pcb1->dst)); 649 pcb1->psm = ip->psm; 650 pcb1->cid = ip->lcid; 651 pcb1->rt = rt; 652 653 /* Copy socket settings */ 654 pcb1->imtu = pcb->imtu; 655 bcopy(&pcb->oflow, &pcb1->oflow, sizeof(pcb1->oflow)); 656 pcb1->flush_timo = pcb->flush_timo; 657 658 token = pcb1->token; 659 } else 660 /* Nobody listens on requested BDADDR/PSM */ 661 result = NG_L2CAP_PSM_NOT_SUPPORTED; 662 663respond: 664 error = ng_btsocket_l2cap_send_l2ca_con_rsp_req(token, rt, 665 &ip->bdaddr, 666 ip->ident, ip->lcid, 667 result,ip->linktype); 668 if (pcb1 != NULL) { 669 if (error != 0) { 670 pcb1->so->so_error = error; 671 pcb1->state = NG_BTSOCKET_L2CAP_CLOSED; 672 soisdisconnected(pcb1->so); 673 } else { 674 pcb1->state = NG_BTSOCKET_L2CAP_CONNECTING; 675 soisconnecting(pcb1->so); 676 677 ng_btsocket_l2cap_timeout(pcb1); 678 } 679 680 mtx_unlock(&pcb1->pcb_mtx); 681 } 682 683 if (pcb != NULL) 684 mtx_unlock(&pcb->pcb_mtx); 685 686 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 687 688 return (error); 689} /* ng_btsocket_l2cap_process_l2ca_con_ind */ 690/*Encryption Change*/ 691static int ng_btsocket_l2cap_process_l2ca_enc_change(struct ng_mesg *msg, ng_btsocket_l2cap_rtentry_p rt) 692{ 693 ng_l2cap_l2ca_enc_chg_op *op = NULL; 694 ng_btsocket_l2cap_pcb_t *pcb = NULL; 695 696 if (msg->header.arglen != sizeof(*op)) 697 return (EMSGSIZE); 698 699 op = (ng_l2cap_l2ca_enc_chg_op *)(msg->data); 700 701 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 702 703 pcb = ng_btsocket_l2cap_pcb_by_cid(&rt->src, op->lcid, 704 op->idtype); 705 if (pcb == NULL) { 706 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 707 return (ENOENT); 708 } 709 710 mtx_lock(&pcb->pcb_mtx); 711 pcb->encryption = op->result; 712 713 if(pcb->need_encrypt){ 714 ng_btsocket_l2cap_untimeout(pcb); 715 if(pcb->state != NG_BTSOCKET_L2CAP_W4_ENC_CHANGE){ 716 NG_BTSOCKET_L2CAP_WARN("%s: Invalid pcb status %d", 717 __func__, pcb->state); 718 }else if(pcb->encryption){ 719 pcb->state = NG_BTSOCKET_L2CAP_OPEN; 720 soisconnected(pcb->so); 721 }else{ 722 pcb->so->so_error = EPERM; 723 ng_btsocket_l2cap_send_l2ca_discon_req(0, pcb); 724 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 725 soisdisconnected(pcb->so); 726 } 727 } 728 mtx_unlock(&pcb->pcb_mtx); 729 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 730 731 return 0; 732} 733/* 734 * Process L2CA_Config response 735 */ 736 737static int 738ng_btsocket_l2cap_process_l2ca_cfg_req_rsp(struct ng_mesg *msg, 739 ng_btsocket_l2cap_rtentry_p rt) 740{ 741 ng_l2cap_l2ca_cfg_op *op = NULL; 742 ng_btsocket_l2cap_pcb_p pcb = NULL; 743 744 if (msg->header.arglen != sizeof(*op)) 745 return (EMSGSIZE); 746 747 op = (ng_l2cap_l2ca_cfg_op *)(msg->data); 748 749 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 750 751 /* 752 * Socket must have issued a Configure request, so we must have a 753 * socket that wants to be configured. Use Netgraph message token 754 * to find it 755 */ 756 757 pcb = ng_btsocket_l2cap_pcb_by_token(msg->header.token); 758 if (pcb == NULL) { 759 /* 760 * XXX FIXME what to do here? We could not find a 761 * socket with requested token. We even can not send 762 * Disconnect, because we do not know channel ID 763 */ 764 765 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 766 return (ENOENT); 767 } 768 769 mtx_lock(&pcb->pcb_mtx); 770 771 NG_BTSOCKET_L2CAP_INFO( 772"%s: Got L2CA_Config response, token=%d, src bdaddr=%x:%x:%x:%x:%x:%x, " \ 773"dst bdaddr=%x:%x:%x:%x:%x:%x, psm=%d, lcid=%d, result=%d, state=%d, " \ 774"cfg_state=%x\n", 775 __func__, msg->header.token, 776 pcb->src.b[5], pcb->src.b[4], pcb->src.b[3], 777 pcb->src.b[2], pcb->src.b[1], pcb->src.b[0], 778 pcb->dst.b[5], pcb->dst.b[4], pcb->dst.b[3], 779 pcb->dst.b[2], pcb->dst.b[1], pcb->dst.b[0], 780 pcb->psm, pcb->cid, op->result, pcb->state, pcb->cfg_state); 781 782 if (pcb->state != NG_BTSOCKET_L2CAP_CONFIGURING) { 783 mtx_unlock(&pcb->pcb_mtx); 784 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 785 786 return (ENOENT); 787 } 788 789 if (op->result == NG_L2CAP_SUCCESS) { 790 /* 791 * XXX FIXME Actually set flush and link timeout. 792 * Set QoS here if required. Resolve conficts (flush_timo). 793 * Save incoming MTU (peer's outgoing MTU) and outgoing flow 794 * spec. 795 */ 796 797 pcb->imtu = op->imtu; 798 bcopy(&op->oflow, &pcb->oflow, sizeof(pcb->oflow)); 799 pcb->flush_timo = op->flush_timo; 800 801 /* 802 * We have configured incoming side, so record it and check 803 * if configuration is complete. If complete then mark socket 804 * as connected, otherwise wait for the peer. 805 */ 806 807 pcb->cfg_state &= ~NG_BTSOCKET_L2CAP_CFG_IN_SENT; 808 pcb->cfg_state |= NG_BTSOCKET_L2CAP_CFG_IN; 809 810 if (pcb->cfg_state == NG_BTSOCKET_L2CAP_CFG_BOTH) { 811 /* Configuration complete - mark socket as open */ 812 ng_btsocket_l2cap_untimeout(pcb); 813 pcb->state = NG_BTSOCKET_L2CAP_OPEN; 814 soisconnected(pcb->so); 815 } 816 } else { 817 /* 818 * Something went wrong. Could be unacceptable parameters, 819 * reject or unknown option. That's too bad, but we will 820 * not negotiate. Send Disconnect and close the channel. 821 */ 822 823 ng_btsocket_l2cap_untimeout(pcb); 824 825 switch (op->result) { 826 case NG_L2CAP_UNACCEPTABLE_PARAMS: 827 case NG_L2CAP_UNKNOWN_OPTION: 828 pcb->so->so_error = EINVAL; 829 break; 830 831 default: 832 pcb->so->so_error = ECONNRESET; 833 break; 834 } 835 836 /* Send disconnect with "zero" token */ 837 ng_btsocket_l2cap_send_l2ca_discon_req(0, pcb); 838 839 /* ... and close the socket */ 840 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 841 soisdisconnected(pcb->so); 842 } 843 844 mtx_unlock(&pcb->pcb_mtx); 845 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 846 847 return (0); 848} /* ng_btsocket_l2cap_process_l2ca_cfg_req_rsp */ 849 850/* 851 * Process L2CA_ConfigRsp response 852 */ 853 854static int 855ng_btsocket_l2cap_process_l2ca_cfg_rsp_rsp(struct ng_mesg *msg, 856 ng_btsocket_l2cap_rtentry_p rt) 857{ 858 ng_l2cap_l2ca_cfg_rsp_op *op = NULL; 859 ng_btsocket_l2cap_pcb_t *pcb = NULL; 860 int error = 0; 861 862 if (msg->header.arglen != sizeof(*op)) 863 return (EMSGSIZE); 864 865 op = (ng_l2cap_l2ca_cfg_rsp_op *)(msg->data); 866 867 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 868 869 /* Look for the socket with the token */ 870 pcb = ng_btsocket_l2cap_pcb_by_token(msg->header.token); 871 if (pcb == NULL) { 872 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 873 return (ENOENT); 874 } 875 876 mtx_lock(&pcb->pcb_mtx); 877 878 NG_BTSOCKET_L2CAP_INFO( 879"%s: Got L2CA_ConfigRsp response, token=%d, src bdaddr=%x:%x:%x:%x:%x:%x, " \ 880"dst bdaddr=%x:%x:%x:%x:%x:%x, psm=%d, lcid=%d, result=%d, state=%d, " \ 881"cfg_state=%x\n", 882 __func__, msg->header.token, 883 pcb->src.b[5], pcb->src.b[4], pcb->src.b[3], 884 pcb->src.b[2], pcb->src.b[1], pcb->src.b[0], 885 pcb->dst.b[5], pcb->dst.b[4], pcb->dst.b[3], 886 pcb->dst.b[2], pcb->dst.b[1], pcb->dst.b[0], 887 pcb->psm, pcb->cid, op->result, pcb->state, pcb->cfg_state); 888 889 if (pcb->state != NG_BTSOCKET_L2CAP_CONFIGURING) { 890 mtx_unlock(&pcb->pcb_mtx); 891 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 892 893 return (ENOENT); 894 } 895 896 /* Check the result and disconnect socket of failure */ 897 if (op->result != NG_L2CAP_SUCCESS) 898 goto disconnect; 899 900 /* 901 * Now we done with remote side configuration. Configure local 902 * side if we have not done it yet. 903 */ 904 905 pcb->cfg_state &= ~NG_BTSOCKET_L2CAP_CFG_OUT_SENT; 906 pcb->cfg_state |= NG_BTSOCKET_L2CAP_CFG_OUT; 907 908 if (pcb->cfg_state == NG_BTSOCKET_L2CAP_CFG_BOTH) { 909 /* Configuration complete - mask socket as open */ 910 ng_btsocket_l2cap_untimeout(pcb); 911 pcb->state = NG_BTSOCKET_L2CAP_OPEN; 912 soisconnected(pcb->so); 913 } else { 914 if (!(pcb->cfg_state & NG_BTSOCKET_L2CAP_CFG_IN_SENT)) { 915 /* Send L2CA_Config request - incoming path */ 916 error = ng_btsocket_l2cap_send_l2ca_cfg_req(pcb); 917 if (error != 0) 918 goto disconnect; 919 920 pcb->cfg_state |= NG_BTSOCKET_L2CAP_CFG_IN_SENT; 921 } 922 } 923 924 mtx_unlock(&pcb->pcb_mtx); 925 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 926 927 return (error); 928 929disconnect: 930 ng_btsocket_l2cap_untimeout(pcb); 931 932 /* Send disconnect with "zero" token */ 933 ng_btsocket_l2cap_send_l2ca_discon_req(0, pcb); 934 935 /* ... and close the socket */ 936 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 937 soisdisconnected(pcb->so); 938 939 mtx_unlock(&pcb->pcb_mtx); 940 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 941 942 return (error); 943} /* ng_btsocket_l2cap_process_l2ca_cfg_rsp_rsp */ 944 945/* 946 * Process L2CA_Config indicator 947 */ 948 949static int 950ng_btsocket_l2cap_process_l2ca_cfg_ind(struct ng_mesg *msg, 951 ng_btsocket_l2cap_rtentry_p rt) 952{ 953 ng_l2cap_l2ca_cfg_ind_ip *ip = NULL; 954 ng_btsocket_l2cap_pcb_t *pcb = NULL; 955 int error = 0; 956 957 if (msg->header.arglen != sizeof(*ip)) 958 return (EMSGSIZE); 959 960 ip = (ng_l2cap_l2ca_cfg_ind_ip *)(msg->data); 961 962 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 963 964 /* Check for the open socket that has given channel ID */ 965 pcb = ng_btsocket_l2cap_pcb_by_cid(&rt->src, ip->lcid, 966 NG_L2CAP_L2CA_IDTYPE_BREDR); 967 if (pcb == NULL) { 968 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 969 return (ENOENT); 970 } 971 972 mtx_lock(&pcb->pcb_mtx); 973 974 NG_BTSOCKET_L2CAP_INFO( 975"%s: Got L2CA_Config indicator, src bdaddr=%x:%x:%x:%x:%x:%x, " \ 976"dst bdaddr=%x:%x:%x:%x:%x:%x, psm=%d, lcid=%d, state=%d, cfg_state=%x\n", 977 __func__, 978 pcb->src.b[5], pcb->src.b[4], pcb->src.b[3], 979 pcb->src.b[2], pcb->src.b[1], pcb->src.b[0], 980 pcb->dst.b[5], pcb->dst.b[4], pcb->dst.b[3], 981 pcb->dst.b[2], pcb->dst.b[1], pcb->dst.b[0], 982 pcb->psm, pcb->cid, pcb->state, pcb->cfg_state); 983 984 /* XXX FIXME re-configuration on open socket */ 985 if (pcb->state != NG_BTSOCKET_L2CAP_CONFIGURING) { 986 mtx_unlock(&pcb->pcb_mtx); 987 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 988 989 return (ENOENT); 990 } 991 992 /* 993 * XXX FIXME Actually set flush and link timeout. Set QoS here if 994 * required. Resolve conficts (flush_timo). Note outgoing MTU (peer's 995 * incoming MTU) and incoming flow spec. 996 */ 997 998 pcb->omtu = ip->omtu; 999 bcopy(&ip->iflow, &pcb->iflow, sizeof(pcb->iflow)); 1000 pcb->flush_timo = ip->flush_timo; 1001 1002 /* 1003 * Send L2CA_Config response to our peer and check for the errors, 1004 * if any send disconnect to close the channel. 1005 */ 1006 1007 if (!(pcb->cfg_state & NG_BTSOCKET_L2CAP_CFG_OUT_SENT)) { 1008 error = ng_btsocket_l2cap_send_l2ca_cfg_rsp(pcb); 1009 if (error != 0) { 1010 ng_btsocket_l2cap_untimeout(pcb); 1011 1012 pcb->so->so_error = error; 1013 1014 /* Send disconnect with "zero" token */ 1015 ng_btsocket_l2cap_send_l2ca_discon_req(0, pcb); 1016 1017 /* ... and close the socket */ 1018 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 1019 soisdisconnected(pcb->so); 1020 } else 1021 pcb->cfg_state |= NG_BTSOCKET_L2CAP_CFG_OUT_SENT; 1022 } 1023 1024 mtx_unlock(&pcb->pcb_mtx); 1025 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1026 1027 return (error); 1028} /* ng_btsocket_l2cap_process_l2cap_cfg_ind */ 1029 1030/* 1031 * Process L2CA_Disconnect response 1032 */ 1033 1034static int 1035ng_btsocket_l2cap_process_l2ca_discon_rsp(struct ng_mesg *msg, 1036 ng_btsocket_l2cap_rtentry_p rt) 1037{ 1038 ng_l2cap_l2ca_discon_op *op = NULL; 1039 ng_btsocket_l2cap_pcb_t *pcb = NULL; 1040 1041 /* Check message */ 1042 if (msg->header.arglen != sizeof(*op)) 1043 return (EMSGSIZE); 1044 1045 op = (ng_l2cap_l2ca_discon_op *)(msg->data); 1046 1047 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 1048 1049 /* 1050 * Socket layer must have issued L2CA_Disconnect request, so there 1051 * must be a socket that wants to be disconnected. Use Netgraph 1052 * message token to find it. 1053 */ 1054 1055 pcb = ng_btsocket_l2cap_pcb_by_token(msg->header.token); 1056 if (pcb == NULL) { 1057 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1058 return (0); 1059 } 1060 1061 mtx_lock(&pcb->pcb_mtx); 1062 1063 /* XXX Close socket no matter what op->result says */ 1064 if (pcb->state != NG_BTSOCKET_L2CAP_CLOSED) { 1065 NG_BTSOCKET_L2CAP_INFO( 1066"%s: Got L2CA_Disconnect response, token=%d, src bdaddr=%x:%x:%x:%x:%x:%x, " \ 1067"dst bdaddr=%x:%x:%x:%x:%x:%x, psm=%d, lcid=%d, result=%d, state=%d\n", 1068 __func__, msg->header.token, 1069 pcb->src.b[5], pcb->src.b[4], pcb->src.b[3], 1070 pcb->src.b[2], pcb->src.b[1], pcb->src.b[0], 1071 pcb->dst.b[5], pcb->dst.b[4], pcb->dst.b[3], 1072 pcb->dst.b[2], pcb->dst.b[1], pcb->dst.b[0], 1073 pcb->psm, pcb->cid, op->result, pcb->state); 1074 1075 ng_btsocket_l2cap_untimeout(pcb); 1076 1077 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 1078 soisdisconnected(pcb->so); 1079 } 1080 1081 mtx_unlock(&pcb->pcb_mtx); 1082 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1083 1084 return (0); 1085} /* ng_btsocket_l2cap_process_l2ca_discon_rsp */ 1086 1087/* 1088 * Process L2CA_Disconnect indicator 1089 */ 1090 1091static int 1092ng_btsocket_l2cap_process_l2ca_discon_ind(struct ng_mesg *msg, 1093 ng_btsocket_l2cap_rtentry_p rt) 1094{ 1095 ng_l2cap_l2ca_discon_ind_ip *ip = NULL; 1096 ng_btsocket_l2cap_pcb_t *pcb = NULL; 1097 1098 /* Check message */ 1099 if (msg->header.arglen != sizeof(*ip)) 1100 return (EMSGSIZE); 1101 1102 ip = (ng_l2cap_l2ca_discon_ind_ip *)(msg->data); 1103 1104 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 1105 1106 /* Look for the socket with given channel ID */ 1107 pcb = ng_btsocket_l2cap_pcb_by_cid(&rt->src, ip->lcid, 1108 ip->idtype); 1109 if (pcb == NULL) { 1110 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1111 return (0); 1112 } 1113 1114 /* 1115 * Channel has already been destroyed, so disconnect the socket 1116 * and be done with it. If there was any pending request we can 1117 * not do anything here anyway. 1118 */ 1119 1120 mtx_lock(&pcb->pcb_mtx); 1121 1122 NG_BTSOCKET_L2CAP_INFO( 1123"%s: Got L2CA_Disconnect indicator, src bdaddr=%x:%x:%x:%x:%x:%x, " \ 1124"dst bdaddr=%x:%x:%x:%x:%x:%x, psm=%d, lcid=%d, state=%d\n", 1125 __func__, 1126 pcb->src.b[5], pcb->src.b[4], pcb->src.b[3], 1127 pcb->src.b[2], pcb->src.b[1], pcb->src.b[0], 1128 pcb->dst.b[5], pcb->dst.b[4], pcb->dst.b[3], 1129 pcb->dst.b[2], pcb->dst.b[1], pcb->dst.b[0], 1130 pcb->psm, pcb->cid, pcb->state); 1131 1132 if (pcb->flags & NG_BTSOCKET_L2CAP_TIMO) 1133 ng_btsocket_l2cap_untimeout(pcb); 1134 1135 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 1136 soisdisconnected(pcb->so); 1137 1138 mtx_unlock(&pcb->pcb_mtx); 1139 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1140 1141 return (0); 1142} /* ng_btsocket_l2cap_process_l2ca_discon_ind */ 1143 1144/* 1145 * Process L2CA_Write response 1146 */ 1147 1148static int 1149ng_btsocket_l2cap_process_l2ca_write_rsp(struct ng_mesg *msg, 1150 ng_btsocket_l2cap_rtentry_p rt) 1151{ 1152 ng_l2cap_l2ca_write_op *op = NULL; 1153 ng_btsocket_l2cap_pcb_t *pcb = NULL; 1154 1155 /* Check message */ 1156 if (msg->header.arglen != sizeof(*op)) 1157 return (EMSGSIZE); 1158 1159 op = (ng_l2cap_l2ca_write_op *)(msg->data); 1160 1161 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 1162 1163 /* Look for the socket with given token */ 1164 pcb = ng_btsocket_l2cap_pcb_by_token(msg->header.token); 1165 if (pcb == NULL) { 1166 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1167 return (ENOENT); 1168 } 1169 1170 mtx_lock(&pcb->pcb_mtx); 1171 1172 NG_BTSOCKET_L2CAP_INFO( 1173"%s: Got L2CA_Write response, src bdaddr=%x:%x:%x:%x:%x:%x, " \ 1174"dst bdaddr=%x:%x:%x:%x:%x:%x, psm=%d, lcid=%d, result=%d, length=%d, " \ 1175"state=%d\n", __func__, 1176 pcb->src.b[5], pcb->src.b[4], pcb->src.b[3], 1177 pcb->src.b[2], pcb->src.b[1], pcb->src.b[0], 1178 pcb->dst.b[5], pcb->dst.b[4], pcb->dst.b[3], 1179 pcb->dst.b[2], pcb->dst.b[1], pcb->dst.b[0], 1180 pcb->psm, pcb->cid, op->result, op->length, 1181 pcb->state); 1182 1183 if (pcb->state != NG_BTSOCKET_L2CAP_OPEN) { 1184 mtx_unlock(&pcb->pcb_mtx); 1185 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1186 1187 return (ENOENT); 1188 } 1189 1190 ng_btsocket_l2cap_untimeout(pcb); 1191 1192 /* 1193 * Check if we have more data to send 1194 */ 1195 sbdroprecord(&pcb->so->so_snd); 1196 if (sbavail(&pcb->so->so_snd) > 0) { 1197 if (ng_btsocket_l2cap_send2(pcb) == 0) 1198 ng_btsocket_l2cap_timeout(pcb); 1199 else 1200 sbdroprecord(&pcb->so->so_snd); /* XXX */ 1201 } 1202 1203 /* 1204 * Now set the result, drop packet from the socket send queue and 1205 * ask for more (wakeup sender) 1206 */ 1207 1208 pcb->so->so_error = ng_btsocket_l2cap_result2errno(op->result); 1209 sowwakeup(pcb->so); 1210 1211 mtx_unlock(&pcb->pcb_mtx); 1212 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1213 1214 return (0); 1215} /* ng_btsocket_l2cap_process_l2ca_write_rsp */ 1216 1217/* 1218 * Send L2CA_Connect request 1219 */ 1220 1221static int 1222ng_btsocket_l2cap_send_l2ca_con_req(ng_btsocket_l2cap_pcb_p pcb) 1223{ 1224 struct ng_mesg *msg = NULL; 1225 ng_l2cap_l2ca_con_ip *ip = NULL; 1226 int error = 0; 1227 1228 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 1229 1230 if (pcb->rt == NULL || 1231 pcb->rt->hook == NULL || NG_HOOK_NOT_VALID(pcb->rt->hook)) 1232 return (ENETDOWN); 1233 1234 NG_MKMESSAGE(msg, NGM_L2CAP_COOKIE, NGM_L2CAP_L2CA_CON, 1235 sizeof(*ip), M_NOWAIT); 1236 if (msg == NULL) 1237 return (ENOMEM); 1238 1239 msg->header.token = pcb->token; 1240 1241 ip = (ng_l2cap_l2ca_con_ip *)(msg->data); 1242 bcopy(&pcb->dst, &ip->bdaddr, sizeof(ip->bdaddr)); 1243 ip->psm = pcb->psm; 1244 ip->linktype = ng_btsock_l2cap_addrtype_to_linktype(pcb->dsttype); 1245 ip->idtype = pcb->idtype; 1246 NG_SEND_MSG_HOOK(error, ng_btsocket_l2cap_node, msg,pcb->rt->hook, 0); 1247 1248 return (error); 1249} /* ng_btsocket_l2cap_send_l2ca_con_req */ 1250 1251/* 1252 * Send L2CA_Connect response 1253 */ 1254 1255static int 1256ng_btsocket_l2cap_send_l2ca_con_rsp_req(u_int32_t token, 1257 ng_btsocket_l2cap_rtentry_p rt, bdaddr_p dst, int ident, 1258 int lcid, int result, int linktype) 1259{ 1260 struct ng_mesg *msg = NULL; 1261 ng_l2cap_l2ca_con_rsp_ip *ip = NULL; 1262 int error = 0; 1263 1264 if (rt == NULL || rt->hook == NULL || NG_HOOK_NOT_VALID(rt->hook)) 1265 return (ENETDOWN); 1266 1267 NG_MKMESSAGE(msg, NGM_L2CAP_COOKIE, NGM_L2CAP_L2CA_CON_RSP, 1268 sizeof(*ip), M_NOWAIT); 1269 if (msg == NULL) 1270 return (ENOMEM); 1271 1272 msg->header.token = token; 1273 1274 ip = (ng_l2cap_l2ca_con_rsp_ip *)(msg->data); 1275 bcopy(dst, &ip->bdaddr, sizeof(ip->bdaddr)); 1276 ip->ident = ident; 1277 ip->lcid = lcid; 1278 ip->linktype = linktype; 1279 ip->result = result; 1280 ip->status = 0; 1281 1282 NG_SEND_MSG_HOOK(error, ng_btsocket_l2cap_node, msg, rt->hook, 0); 1283 1284 return (error); 1285} /* ng_btsocket_l2cap_send_l2ca_con_rsp_req */ 1286 1287/* 1288 * Send L2CA_Config request 1289 */ 1290 1291static int 1292ng_btsocket_l2cap_send_l2ca_cfg_req(ng_btsocket_l2cap_pcb_p pcb) 1293{ 1294 struct ng_mesg *msg = NULL; 1295 ng_l2cap_l2ca_cfg_ip *ip = NULL; 1296 int error = 0; 1297 1298 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 1299 1300 if (pcb->rt == NULL || 1301 pcb->rt->hook == NULL || NG_HOOK_NOT_VALID(pcb->rt->hook)) 1302 return (ENETDOWN); 1303 1304 NG_MKMESSAGE(msg, NGM_L2CAP_COOKIE, NGM_L2CAP_L2CA_CFG, 1305 sizeof(*ip), M_NOWAIT); 1306 if (msg == NULL) 1307 return (ENOMEM); 1308 1309 msg->header.token = pcb->token; 1310 1311 ip = (ng_l2cap_l2ca_cfg_ip *)(msg->data); 1312 ip->lcid = pcb->cid; 1313 ip->imtu = pcb->imtu; 1314 bcopy(&pcb->oflow, &ip->oflow, sizeof(ip->oflow)); 1315 ip->flush_timo = pcb->flush_timo; 1316 ip->link_timo = pcb->link_timo; 1317 1318 NG_SEND_MSG_HOOK(error, ng_btsocket_l2cap_node, msg,pcb->rt->hook, 0); 1319 1320 return (error); 1321} /* ng_btsocket_l2cap_send_l2ca_cfg_req */ 1322 1323/* 1324 * Send L2CA_Config response 1325 */ 1326 1327static int 1328ng_btsocket_l2cap_send_l2ca_cfg_rsp(ng_btsocket_l2cap_pcb_p pcb) 1329{ 1330 struct ng_mesg *msg = NULL; 1331 ng_l2cap_l2ca_cfg_rsp_ip *ip = NULL; 1332 int error = 0; 1333 1334 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 1335 1336 if (pcb->rt == NULL || 1337 pcb->rt->hook == NULL || NG_HOOK_NOT_VALID(pcb->rt->hook)) 1338 return (ENETDOWN); 1339 1340 NG_MKMESSAGE(msg, NGM_L2CAP_COOKIE, NGM_L2CAP_L2CA_CFG_RSP, 1341 sizeof(*ip), M_NOWAIT); 1342 if (msg == NULL) 1343 return (ENOMEM); 1344 1345 msg->header.token = pcb->token; 1346 1347 ip = (ng_l2cap_l2ca_cfg_rsp_ip *)(msg->data); 1348 ip->lcid = pcb->cid; 1349 ip->omtu = pcb->omtu; 1350 bcopy(&pcb->iflow, &ip->iflow, sizeof(ip->iflow)); 1351 1352 NG_SEND_MSG_HOOK(error, ng_btsocket_l2cap_node, msg, pcb->rt->hook, 0); 1353 1354 return (error); 1355} /* ng_btsocket_l2cap_send_l2ca_cfg_rsp */ 1356 1357/* 1358 * Send L2CA_Disconnect request 1359 */ 1360 1361static int 1362ng_btsocket_l2cap_send_l2ca_discon_req(u_int32_t token, 1363 ng_btsocket_l2cap_pcb_p pcb) 1364{ 1365 struct ng_mesg *msg = NULL; 1366 ng_l2cap_l2ca_discon_ip *ip = NULL; 1367 int error = 0; 1368 1369 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 1370 1371 if (pcb->rt == NULL || 1372 pcb->rt->hook == NULL || NG_HOOK_NOT_VALID(pcb->rt->hook)) 1373 return (ENETDOWN); 1374 1375 NG_MKMESSAGE(msg, NGM_L2CAP_COOKIE, NGM_L2CAP_L2CA_DISCON, 1376 sizeof(*ip), M_NOWAIT); 1377 if (msg == NULL) 1378 return (ENOMEM); 1379 1380 msg->header.token = token; 1381 1382 ip = (ng_l2cap_l2ca_discon_ip *)(msg->data); 1383 ip->lcid = pcb->cid; 1384 ip->idtype = pcb->idtype; 1385 1386 NG_SEND_MSG_HOOK(error, ng_btsocket_l2cap_node, msg,pcb->rt->hook, 0); 1387 1388 return (error); 1389} /* ng_btsocket_l2cap_send_l2ca_discon_req */ 1390 1391/***************************************************************************** 1392 ***************************************************************************** 1393 ** Socket interface 1394 ***************************************************************************** 1395 *****************************************************************************/ 1396 1397/* 1398 * L2CAP sockets data input routine 1399 */ 1400 1401static void 1402ng_btsocket_l2cap_data_input(struct mbuf *m, hook_p hook) 1403{ 1404 ng_l2cap_hdr_t *hdr = NULL; 1405 ng_l2cap_clt_hdr_t *clt_hdr = NULL; 1406 ng_btsocket_l2cap_pcb_t *pcb = NULL; 1407 ng_btsocket_l2cap_rtentry_t *rt = NULL; 1408 uint16_t idtype; 1409 1410 if (hook == NULL) { 1411 NG_BTSOCKET_L2CAP_ALERT( 1412"%s: Invalid source hook for L2CAP data packet\n", __func__); 1413 goto drop; 1414 } 1415 1416 rt = (ng_btsocket_l2cap_rtentry_t *) NG_HOOK_PRIVATE(hook); 1417 if (rt == NULL) { 1418 NG_BTSOCKET_L2CAP_ALERT( 1419"%s: Could not find out source bdaddr for L2CAP data packet\n", __func__); 1420 goto drop; 1421 } 1422 1423 m = m_pullup(m, sizeof(uint16_t)); 1424 idtype = *mtod(m, uint16_t *); 1425 m_adj(m, sizeof(uint16_t)); 1426 1427 /* Make sure we can access header */ 1428 if (m->m_pkthdr.len < sizeof(*hdr)) { 1429 NG_BTSOCKET_L2CAP_ERR( 1430"%s: L2CAP data packet too small, len=%d\n", __func__, m->m_pkthdr.len); 1431 goto drop; 1432 } 1433 1434 if (m->m_len < sizeof(*hdr)) { 1435 m = m_pullup(m, sizeof(*hdr)); 1436 if (m == NULL) 1437 goto drop; 1438 } 1439 1440 /* Strip L2CAP packet header and verify packet length */ 1441 hdr = mtod(m, ng_l2cap_hdr_t *); 1442 m_adj(m, sizeof(*hdr)); 1443 1444 if (hdr->length != m->m_pkthdr.len) { 1445 NG_BTSOCKET_L2CAP_ERR( 1446"%s: Bad L2CAP data packet length, len=%d, length=%d\n", 1447 __func__, m->m_pkthdr.len, hdr->length); 1448 goto drop; 1449 } 1450 1451 /* 1452 * Now process packet. Two cases: 1453 * 1454 * 1) Normal packet (cid != 2) then find connected socket and append 1455 * mbuf to the socket queue. Wakeup socket. 1456 * 1457 * 2) Broadcast packet (cid == 2) then find all sockets that connected 1458 * to the given PSM and have SO_BROADCAST bit set and append mbuf 1459 * to the socket queue. Wakeup socket. 1460 */ 1461 1462 NG_BTSOCKET_L2CAP_INFO( 1463"%s: Received L2CAP data packet: src bdaddr=%x:%x:%x:%x:%x:%x, " \ 1464"dcid=%d, length=%d\n", 1465 __func__, 1466 rt->src.b[5], rt->src.b[4], rt->src.b[3], 1467 rt->src.b[2], rt->src.b[1], rt->src.b[0], 1468 hdr->dcid, hdr->length); 1469 1470 if ((hdr->dcid >= NG_L2CAP_FIRST_CID) || 1471 (idtype == NG_L2CAP_L2CA_IDTYPE_ATT)|| 1472 (idtype == NG_L2CAP_L2CA_IDTYPE_SMP) 1473 ){ 1474 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 1475 1476 /* Normal packet: find connected socket */ 1477 pcb = ng_btsocket_l2cap_pcb_by_cid(&rt->src, hdr->dcid,idtype); 1478 if (pcb == NULL) { 1479 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1480 goto drop; 1481 } 1482 1483 mtx_lock(&pcb->pcb_mtx); 1484 1485 if (pcb->state != NG_BTSOCKET_L2CAP_OPEN) { 1486 NG_BTSOCKET_L2CAP_ERR( 1487"%s: No connected socket found, src bdaddr=%x:%x:%x:%x:%x:%x, dcid=%d, " \ 1488"state=%d\n", __func__, 1489 rt->src.b[5], rt->src.b[4], rt->src.b[3], 1490 rt->src.b[2], rt->src.b[1], rt->src.b[0], 1491 hdr->dcid, pcb->state); 1492 1493 mtx_unlock(&pcb->pcb_mtx); 1494 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1495 goto drop; 1496 } 1497 1498 /* Check packet size against socket's incoming MTU */ 1499 if (hdr->length > pcb->imtu) { 1500 NG_BTSOCKET_L2CAP_ERR( 1501"%s: L2CAP data packet too big, src bdaddr=%x:%x:%x:%x:%x:%x, " \ 1502"dcid=%d, length=%d, imtu=%d\n", 1503 __func__, 1504 rt->src.b[5], rt->src.b[4], rt->src.b[3], 1505 rt->src.b[2], rt->src.b[1], rt->src.b[0], 1506 hdr->dcid, hdr->length, pcb->imtu); 1507 1508 mtx_unlock(&pcb->pcb_mtx); 1509 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1510 goto drop; 1511 } 1512 1513 /* Check if we have enough space in socket receive queue */ 1514 if (m->m_pkthdr.len > sbspace(&pcb->so->so_rcv)) { 1515 /* 1516 * This is really bad. Receive queue on socket does 1517 * not have enough space for the packet. We do not 1518 * have any other choice but drop the packet. L2CAP 1519 * does not provide any flow control. 1520 */ 1521 1522 NG_BTSOCKET_L2CAP_ERR( 1523"%s: Not enough space in socket receive queue. Dropping L2CAP data packet, " \ 1524"src bdaddr=%x:%x:%x:%x:%x:%x, dcid=%d, len=%d, space=%ld\n", 1525 __func__, 1526 rt->src.b[5], rt->src.b[4], rt->src.b[3], 1527 rt->src.b[2], rt->src.b[1], rt->src.b[0], 1528 hdr->dcid, m->m_pkthdr.len, 1529 sbspace(&pcb->so->so_rcv)); 1530 1531 mtx_unlock(&pcb->pcb_mtx); 1532 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1533 goto drop; 1534 } 1535 1536 /* Append packet to the socket receive queue and wakeup */ 1537 sbappendrecord(&pcb->so->so_rcv, m); 1538 m = NULL; 1539 1540 sorwakeup(pcb->so); 1541 1542 mtx_unlock(&pcb->pcb_mtx); 1543 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1544 } else if (hdr->dcid == NG_L2CAP_CLT_CID) { 1545 /* Broadcast packet: give packet to all sockets */ 1546 1547 /* Check packet size against connectionless MTU */ 1548 if (hdr->length > NG_L2CAP_MTU_DEFAULT) { 1549 NG_BTSOCKET_L2CAP_ERR( 1550"%s: Connectionless L2CAP data packet too big, " \ 1551"src bdaddr=%x:%x:%x:%x:%x:%x, length=%d\n", 1552 __func__, 1553 rt->src.b[5], rt->src.b[4], rt->src.b[3], 1554 rt->src.b[2], rt->src.b[1], rt->src.b[0], 1555 hdr->length); 1556 goto drop; 1557 } 1558 1559 /* Make sure we can access connectionless header */ 1560 if (m->m_pkthdr.len < sizeof(*clt_hdr)) { 1561 NG_BTSOCKET_L2CAP_ERR( 1562"%s: Can not get L2CAP connectionless packet header, " \ 1563"src bdaddr=%x:%x:%x:%x:%x:%x, length=%d\n", 1564 __func__, 1565 rt->src.b[5], rt->src.b[4], rt->src.b[3], 1566 rt->src.b[2], rt->src.b[1], rt->src.b[0], 1567 hdr->length); 1568 goto drop; 1569 } 1570 1571 if (m->m_len < sizeof(*clt_hdr)) { 1572 m = m_pullup(m, sizeof(*clt_hdr)); 1573 if (m == NULL) 1574 goto drop; 1575 } 1576 1577 /* Strip connectionless header and deliver packet */ 1578 clt_hdr = mtod(m, ng_l2cap_clt_hdr_t *); 1579 m_adj(m, sizeof(*clt_hdr)); 1580 1581 NG_BTSOCKET_L2CAP_INFO( 1582"%s: Got L2CAP connectionless data packet, " \ 1583"src bdaddr=%x:%x:%x:%x:%x:%x, psm=%d, length=%d\n", 1584 __func__, 1585 rt->src.b[5], rt->src.b[4], rt->src.b[3], 1586 rt->src.b[2], rt->src.b[1], rt->src.b[0], 1587 clt_hdr->psm, hdr->length); 1588 1589 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 1590 1591 LIST_FOREACH(pcb, &ng_btsocket_l2cap_sockets, next) { 1592 struct mbuf *copy = NULL; 1593 1594 mtx_lock(&pcb->pcb_mtx); 1595 1596 if (bcmp(&rt->src, &pcb->src, sizeof(pcb->src)) != 0 || 1597 pcb->psm != clt_hdr->psm || 1598 pcb->state != NG_BTSOCKET_L2CAP_OPEN || 1599 (pcb->so->so_options & SO_BROADCAST) == 0 || 1600 m->m_pkthdr.len > sbspace(&pcb->so->so_rcv)) 1601 goto next; 1602 1603 /* 1604 * Create a copy of the packet and append it to the 1605 * socket's queue. If m_dup() failed - no big deal 1606 * it is a broadcast traffic after all 1607 */ 1608 1609 copy = m_dup(m, M_NOWAIT); 1610 if (copy != NULL) { 1611 sbappendrecord(&pcb->so->so_rcv, copy); 1612 sorwakeup(pcb->so); 1613 } 1614next: 1615 mtx_unlock(&pcb->pcb_mtx); 1616 } 1617 1618 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1619 } 1620drop: 1621 NG_FREE_M(m); /* checks for m != NULL */ 1622} /* ng_btsocket_l2cap_data_input */ 1623 1624/* 1625 * L2CAP sockets default message input routine 1626 */ 1627 1628static void 1629ng_btsocket_l2cap_default_msg_input(struct ng_mesg *msg, hook_p hook) 1630{ 1631 switch (msg->header.cmd) { 1632 case NGM_L2CAP_NODE_HOOK_INFO: { 1633 ng_btsocket_l2cap_rtentry_t *rt = NULL; 1634 ng_l2cap_node_hook_info_ep *ep = 1635 (ng_l2cap_node_hook_info_ep *)msg->data; 1636 if (hook == NULL || msg->header.arglen != sizeof(*ep)) 1637 break; 1638 1639 if (bcmp(&ep->addr, NG_HCI_BDADDR_ANY, sizeof(bdaddr_t)) == 0) 1640 break; 1641 1642 mtx_lock(&ng_btsocket_l2cap_rt_mtx); 1643 1644 rt = (ng_btsocket_l2cap_rtentry_t *) NG_HOOK_PRIVATE(hook); 1645 if (rt == NULL) { 1646 rt = malloc(sizeof(*rt), 1647 M_NETGRAPH_BTSOCKET_L2CAP, M_NOWAIT|M_ZERO); 1648 if (rt == NULL) { 1649 mtx_unlock(&ng_btsocket_l2cap_rt_mtx); 1650 break; 1651 } 1652 1653 LIST_INSERT_HEAD(&ng_btsocket_l2cap_rt, rt, next); 1654 1655 NG_HOOK_SET_PRIVATE(hook, rt); 1656 } 1657 1658 bcopy(&ep->addr, &rt->src, sizeof(rt->src)); 1659 rt->hook = hook; 1660 1661 mtx_unlock(&ng_btsocket_l2cap_rt_mtx); 1662 1663 NG_BTSOCKET_L2CAP_INFO( 1664"%s: Updating hook \"%s\", src bdaddr=%x:%x:%x:%x:%x:%x\n", 1665 __func__, NG_HOOK_NAME(hook), 1666 rt->src.b[5], rt->src.b[4], rt->src.b[3], 1667 rt->src.b[2], rt->src.b[1], rt->src.b[0]); 1668 } break; 1669 1670 default: 1671 NG_BTSOCKET_L2CAP_WARN( 1672"%s: Unknown message, cmd=%d\n", __func__, msg->header.cmd); 1673 break; 1674 } 1675 1676 NG_FREE_MSG(msg); /* Checks for msg != NULL */ 1677} /* ng_btsocket_l2cap_default_msg_input */ 1678 1679/* 1680 * L2CAP sockets L2CA message input routine 1681 */ 1682 1683static void 1684ng_btsocket_l2cap_l2ca_msg_input(struct ng_mesg *msg, hook_p hook) 1685{ 1686 ng_btsocket_l2cap_rtentry_p rt = NULL; 1687 1688 if (hook == NULL) { 1689 NG_BTSOCKET_L2CAP_ALERT( 1690"%s: Invalid source hook for L2CA message\n", __func__); 1691 goto drop; 1692 } 1693 1694 rt = (ng_btsocket_l2cap_rtentry_p) NG_HOOK_PRIVATE(hook); 1695 if (rt == NULL) { 1696 NG_BTSOCKET_L2CAP_ALERT( 1697"%s: Could not find out source bdaddr for L2CA message\n", __func__); 1698 goto drop; 1699 } 1700 1701 switch (msg->header.cmd) { 1702 case NGM_L2CAP_L2CA_CON: /* L2CA_Connect response */ 1703 ng_btsocket_l2cap_process_l2ca_con_req_rsp(msg, rt); 1704 break; 1705 1706 case NGM_L2CAP_L2CA_CON_RSP: /* L2CA_ConnectRsp response */ 1707 ng_btsocket_l2cap_process_l2ca_con_rsp_rsp(msg, rt); 1708 break; 1709 1710 case NGM_L2CAP_L2CA_CON_IND: /* L2CA_Connect indicator */ 1711 ng_btsocket_l2cap_process_l2ca_con_ind(msg, rt); 1712 break; 1713 1714 case NGM_L2CAP_L2CA_CFG: /* L2CA_Config response */ 1715 ng_btsocket_l2cap_process_l2ca_cfg_req_rsp(msg, rt); 1716 break; 1717 1718 case NGM_L2CAP_L2CA_CFG_RSP: /* L2CA_ConfigRsp response */ 1719 ng_btsocket_l2cap_process_l2ca_cfg_rsp_rsp(msg, rt); 1720 break; 1721 1722 case NGM_L2CAP_L2CA_CFG_IND: /* L2CA_Config indicator */ 1723 ng_btsocket_l2cap_process_l2ca_cfg_ind(msg, rt); 1724 break; 1725 1726 case NGM_L2CAP_L2CA_DISCON: /* L2CA_Disconnect response */ 1727 ng_btsocket_l2cap_process_l2ca_discon_rsp(msg, rt); 1728 break; 1729 1730 case NGM_L2CAP_L2CA_DISCON_IND: /* L2CA_Disconnect indicator */ 1731 ng_btsocket_l2cap_process_l2ca_discon_ind(msg, rt); 1732 break; 1733 1734 case NGM_L2CAP_L2CA_WRITE: /* L2CA_Write response */ 1735 ng_btsocket_l2cap_process_l2ca_write_rsp(msg, rt); 1736 break; 1737 case NGM_L2CAP_L2CA_ENC_CHANGE: 1738 ng_btsocket_l2cap_process_l2ca_enc_change(msg, rt); 1739 1740 break; 1741 /* XXX FIXME add other L2CA messages */ 1742 1743 default: 1744 NG_BTSOCKET_L2CAP_WARN( 1745"%s: Unknown L2CA message, cmd=%d\n", __func__, msg->header.cmd); 1746 break; 1747 } 1748drop: 1749 NG_FREE_MSG(msg); 1750} /* ng_btsocket_l2cap_l2ca_msg_input */ 1751 1752/* 1753 * L2CAP sockets input routine 1754 */ 1755 1756static void 1757ng_btsocket_l2cap_input(void *context, int pending) 1758{ 1759 item_p item = NULL; 1760 hook_p hook = NULL; 1761 1762 for (;;) { 1763 mtx_lock(&ng_btsocket_l2cap_queue_mtx); 1764 NG_BT_ITEMQ_DEQUEUE(&ng_btsocket_l2cap_queue, item); 1765 mtx_unlock(&ng_btsocket_l2cap_queue_mtx); 1766 1767 if (item == NULL) 1768 break; 1769 1770 NGI_GET_HOOK(item, hook); 1771 if (hook != NULL && NG_HOOK_NOT_VALID(hook)) 1772 goto drop; 1773 1774 switch(item->el_flags & NGQF_TYPE) { 1775 case NGQF_DATA: { 1776 struct mbuf *m = NULL; 1777 1778 NGI_GET_M(item, m); 1779 ng_btsocket_l2cap_data_input(m, hook); 1780 } break; 1781 1782 case NGQF_MESG: { 1783 struct ng_mesg *msg = NULL; 1784 1785 NGI_GET_MSG(item, msg); 1786 1787 switch (msg->header.cmd) { 1788 case NGM_L2CAP_L2CA_CON: 1789 case NGM_L2CAP_L2CA_CON_RSP: 1790 case NGM_L2CAP_L2CA_CON_IND: 1791 case NGM_L2CAP_L2CA_CFG: 1792 case NGM_L2CAP_L2CA_CFG_RSP: 1793 case NGM_L2CAP_L2CA_CFG_IND: 1794 case NGM_L2CAP_L2CA_DISCON: 1795 case NGM_L2CAP_L2CA_DISCON_IND: 1796 case NGM_L2CAP_L2CA_WRITE: 1797 case NGM_L2CAP_L2CA_ENC_CHANGE: 1798 /* XXX FIXME add other L2CA messages */ 1799 ng_btsocket_l2cap_l2ca_msg_input(msg, hook); 1800 break; 1801 1802 default: 1803 ng_btsocket_l2cap_default_msg_input(msg, hook); 1804 break; 1805 } 1806 } break; 1807 1808 default: 1809 KASSERT(0, 1810("%s: invalid item type=%ld\n", __func__, (item->el_flags & NGQF_TYPE))); 1811 break; 1812 } 1813drop: 1814 if (hook != NULL) 1815 NG_HOOK_UNREF(hook); 1816 1817 NG_FREE_ITEM(item); 1818 } 1819} /* ng_btsocket_l2cap_input */ 1820 1821/* 1822 * Route cleanup task. Gets scheduled when hook is disconnected. Here we 1823 * will find all sockets that use "invalid" hook and disconnect them. 1824 */ 1825 1826static void 1827ng_btsocket_l2cap_rtclean(void *context, int pending) 1828{ 1829 ng_btsocket_l2cap_pcb_p pcb = NULL, pcb_next = NULL; 1830 ng_btsocket_l2cap_rtentry_p rt = NULL; 1831 1832 mtx_lock(&ng_btsocket_l2cap_rt_mtx); 1833 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 1834 1835 /* 1836 * First disconnect all sockets that use "invalid" hook 1837 */ 1838 1839 for (pcb = LIST_FIRST(&ng_btsocket_l2cap_sockets); pcb != NULL; ) { 1840 mtx_lock(&pcb->pcb_mtx); 1841 pcb_next = LIST_NEXT(pcb, next); 1842 1843 if (pcb->rt != NULL && 1844 pcb->rt->hook != NULL && NG_HOOK_NOT_VALID(pcb->rt->hook)) { 1845 if (pcb->flags & NG_BTSOCKET_L2CAP_TIMO) 1846 ng_btsocket_l2cap_untimeout(pcb); 1847 1848 pcb->so->so_error = ENETDOWN; 1849 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 1850 soisdisconnected(pcb->so); 1851 1852 pcb->token = 0; 1853 pcb->cid = 0; 1854 pcb->rt = NULL; 1855 } 1856 1857 mtx_unlock(&pcb->pcb_mtx); 1858 pcb = pcb_next; 1859 } 1860 1861 /* 1862 * Now cleanup routing table 1863 */ 1864 1865 for (rt = LIST_FIRST(&ng_btsocket_l2cap_rt); rt != NULL; ) { 1866 ng_btsocket_l2cap_rtentry_p rt_next = LIST_NEXT(rt, next); 1867 1868 if (rt->hook != NULL && NG_HOOK_NOT_VALID(rt->hook)) { 1869 LIST_REMOVE(rt, next); 1870 1871 NG_HOOK_SET_PRIVATE(rt->hook, NULL); 1872 NG_HOOK_UNREF(rt->hook); /* Remove extra reference */ 1873 1874 bzero(rt, sizeof(*rt)); 1875 free(rt, M_NETGRAPH_BTSOCKET_L2CAP); 1876 } 1877 1878 rt = rt_next; 1879 } 1880 1881 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1882 mtx_unlock(&ng_btsocket_l2cap_rt_mtx); 1883} /* ng_btsocket_l2cap_rtclean */ 1884 1885/* 1886 * Initialize everything 1887 */ 1888 1889static void 1890ng_btsocket_l2cap_init(void *arg __unused) 1891{ 1892 int error = 0; 1893 1894 ng_btsocket_l2cap_node = NULL; 1895 ng_btsocket_l2cap_debug_level = NG_BTSOCKET_WARN_LEVEL; 1896 1897 /* Register Netgraph node type */ 1898 error = ng_newtype(&typestruct); 1899 if (error != 0) { 1900 NG_BTSOCKET_L2CAP_ALERT( 1901"%s: Could not register Netgraph node type, error=%d\n", __func__, error); 1902 1903 return; 1904 } 1905 1906 /* Create Netgrapg node */ 1907 error = ng_make_node_common(&typestruct, &ng_btsocket_l2cap_node); 1908 if (error != 0) { 1909 NG_BTSOCKET_L2CAP_ALERT( 1910"%s: Could not create Netgraph node, error=%d\n", __func__, error); 1911 1912 ng_btsocket_l2cap_node = NULL; 1913 1914 return; 1915 } 1916 1917 error = ng_name_node(ng_btsocket_l2cap_node, 1918 NG_BTSOCKET_L2CAP_NODE_TYPE); 1919 if (error != 0) { 1920 NG_BTSOCKET_L2CAP_ALERT( 1921"%s: Could not name Netgraph node, error=%d\n", __func__, error); 1922 1923 NG_NODE_UNREF(ng_btsocket_l2cap_node); 1924 ng_btsocket_l2cap_node = NULL; 1925 1926 return; 1927 } 1928 1929 /* Create input queue */ 1930 NG_BT_ITEMQ_INIT(&ng_btsocket_l2cap_queue, ifqmaxlen); 1931 mtx_init(&ng_btsocket_l2cap_queue_mtx, 1932 "btsocks_l2cap_queue_mtx", NULL, MTX_DEF); 1933 TASK_INIT(&ng_btsocket_l2cap_queue_task, 0, 1934 ng_btsocket_l2cap_input, NULL); 1935 1936 /* Create list of sockets */ 1937 LIST_INIT(&ng_btsocket_l2cap_sockets); 1938 mtx_init(&ng_btsocket_l2cap_sockets_mtx, 1939 "btsocks_l2cap_sockets_mtx", NULL, MTX_DEF); 1940 1941 /* Routing table */ 1942 LIST_INIT(&ng_btsocket_l2cap_rt); 1943 mtx_init(&ng_btsocket_l2cap_rt_mtx, 1944 "btsocks_l2cap_rt_mtx", NULL, MTX_DEF); 1945 TASK_INIT(&ng_btsocket_l2cap_rt_task, 0, 1946 ng_btsocket_l2cap_rtclean, NULL); 1947} /* ng_btsocket_l2cap_init */ 1948SYSINIT(ng_btsocket_l2cap_init, SI_SUB_PROTO_DOMAIN, SI_ORDER_THIRD, 1949 ng_btsocket_l2cap_init, NULL); 1950 1951/* 1952 * Abort connection on socket 1953 */ 1954 1955void 1956ng_btsocket_l2cap_abort(struct socket *so) 1957{ 1958 so->so_error = ECONNABORTED; 1959 1960 (void)ng_btsocket_l2cap_disconnect(so); 1961} /* ng_btsocket_l2cap_abort */ 1962 1963void 1964ng_btsocket_l2cap_close(struct socket *so) 1965{ 1966 1967 (void)ng_btsocket_l2cap_disconnect(so); 1968} /* ng_btsocket_l2cap_close */ 1969 1970/* 1971 * Create and attach new socket 1972 */ 1973 1974int 1975ng_btsocket_l2cap_attach(struct socket *so, int proto, struct thread *td) 1976{ 1977 static u_int32_t token = 0; 1978 ng_btsocket_l2cap_pcb_p pcb = so2l2cap_pcb(so); 1979 int error; 1980 1981 /* Check socket and protocol */ 1982 if (ng_btsocket_l2cap_node == NULL) 1983 return (EPROTONOSUPPORT); 1984 if (so->so_type != SOCK_SEQPACKET) 1985 return (ESOCKTNOSUPPORT); 1986 1987#if 0 /* XXX sonewconn() calls "pru_attach" with proto == 0 */ 1988 if (proto != 0) 1989 if (proto != BLUETOOTH_PROTO_L2CAP) 1990 return (EPROTONOSUPPORT); 1991#endif /* XXX */ 1992 1993 if (pcb != NULL) 1994 return (EISCONN); 1995 1996 /* Reserve send and receive space if it is not reserved yet */ 1997 if ((so->so_snd.sb_hiwat == 0) || (so->so_rcv.sb_hiwat == 0)) { 1998 error = soreserve(so, NG_BTSOCKET_L2CAP_SENDSPACE, 1999 NG_BTSOCKET_L2CAP_RECVSPACE); 2000 if (error != 0) 2001 return (error); 2002 } 2003 2004 /* Allocate the PCB */ 2005 pcb = malloc(sizeof(*pcb), 2006 M_NETGRAPH_BTSOCKET_L2CAP, M_NOWAIT | M_ZERO); 2007 if (pcb == NULL) 2008 return (ENOMEM); 2009 2010 /* Link the PCB and the socket */ 2011 so->so_pcb = (caddr_t) pcb; 2012 pcb->so = so; 2013 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 2014 2015 /* Initialize PCB */ 2016 pcb->imtu = pcb->omtu = NG_L2CAP_MTU_DEFAULT; 2017 2018 /* Default flow */ 2019 pcb->iflow.flags = 0x0; 2020 pcb->iflow.service_type = NG_HCI_SERVICE_TYPE_BEST_EFFORT; 2021 pcb->iflow.token_rate = 0xffffffff; /* maximum */ 2022 pcb->iflow.token_bucket_size = 0xffffffff; /* maximum */ 2023 pcb->iflow.peak_bandwidth = 0x00000000; /* maximum */ 2024 pcb->iflow.latency = 0xffffffff; /* don't care */ 2025 pcb->iflow.delay_variation = 0xffffffff; /* don't care */ 2026 2027 bcopy(&pcb->iflow, &pcb->oflow, sizeof(pcb->oflow)); 2028 2029 pcb->flush_timo = NG_L2CAP_FLUSH_TIMO_DEFAULT; 2030 pcb->link_timo = NG_L2CAP_LINK_TIMO_DEFAULT; 2031 2032 /* 2033 * XXX Mark PCB mutex as DUPOK to prevent "duplicated lock of 2034 * the same type" message. When accepting new L2CAP connection 2035 * ng_btsocket_l2cap_process_l2ca_con_ind() holds both PCB mutexes 2036 * for "old" (accepting) PCB and "new" (created) PCB. 2037 */ 2038 2039 mtx_init(&pcb->pcb_mtx, "btsocks_l2cap_pcb_mtx", NULL, 2040 MTX_DEF|MTX_DUPOK); 2041 callout_init_mtx(&pcb->timo, &pcb->pcb_mtx, 0); 2042 2043 /* 2044 * Add the PCB to the list 2045 * 2046 * XXX FIXME VERY IMPORTANT! 2047 * 2048 * This is totally FUBAR. We could get here in two cases: 2049 * 2050 * 1) When user calls socket() 2051 * 2) When we need to accept new incoming connection and call 2052 * sonewconn() 2053 * 2054 * In the first case we must acquire ng_btsocket_l2cap_sockets_mtx. 2055 * In the second case we hold ng_btsocket_l2cap_sockets_mtx already. 2056 * So we now need to distinguish between these cases. From reading 2057 * /sys/kern/uipc_socket.c we can find out that sonewconn() calls 2058 * pru_attach with proto == 0 and td == NULL. For now use this fact 2059 * to figure out if we were called from socket() or from sonewconn(). 2060 */ 2061 2062 if (td != NULL) 2063 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 2064 else 2065 mtx_assert(&ng_btsocket_l2cap_sockets_mtx, MA_OWNED); 2066 2067 /* Set PCB token. Use ng_btsocket_l2cap_sockets_mtx for protection */ 2068 if (++ token == 0) 2069 token ++; 2070 2071 pcb->token = token; 2072 2073 LIST_INSERT_HEAD(&ng_btsocket_l2cap_sockets, pcb, next); 2074 2075 if (td != NULL) 2076 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 2077 2078 return (0); 2079} /* ng_btsocket_l2cap_attach */ 2080 2081/* 2082 * Bind socket 2083 */ 2084 2085int 2086ng_btsocket_l2cap_bind(struct socket *so, struct sockaddr *nam, 2087 struct thread *td) 2088{ 2089 ng_btsocket_l2cap_pcb_t *pcb = NULL; 2090 struct sockaddr_l2cap *sa = (struct sockaddr_l2cap *) nam; 2091 int psm, error = 0; 2092 2093 if (ng_btsocket_l2cap_node == NULL) 2094 return (EINVAL); 2095 2096 /* Verify address */ 2097 if (sa == NULL) 2098 return (EINVAL); 2099 if (sa->l2cap_family != AF_BLUETOOTH) 2100 return (EAFNOSUPPORT); 2101 /*For the time being, Not support LE binding.*/ 2102 if ((sa->l2cap_len != sizeof(*sa))&& 2103 (sa->l2cap_len != sizeof(struct sockaddr_l2cap_compat))) 2104 return (EINVAL); 2105 2106 psm = le16toh(sa->l2cap_psm); 2107 2108 /* 2109 * Check if other socket has this address already (look for exact 2110 * match PSM and bdaddr) and assign socket address if it's available. 2111 * 2112 * Note: socket can be bound to ANY PSM (zero) thus allowing several 2113 * channels with the same PSM between the same pair of BD_ADDR'es. 2114 */ 2115 2116 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 2117 2118 LIST_FOREACH(pcb, &ng_btsocket_l2cap_sockets, next) 2119 if (psm != 0 && psm == pcb->psm && 2120 bcmp(&pcb->src, &sa->l2cap_bdaddr, sizeof(bdaddr_t)) == 0) 2121 break; 2122 2123 if (pcb == NULL) { 2124 /* Set socket address */ 2125 pcb = so2l2cap_pcb(so); 2126 if (pcb != NULL) { 2127 bcopy(&sa->l2cap_bdaddr, &pcb->src, sizeof(pcb->src)); 2128 pcb->psm = psm; 2129 } else 2130 error = EINVAL; 2131 } else 2132 error = EADDRINUSE; 2133 2134 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 2135 2136 return (error); 2137} /* ng_btsocket_l2cap_bind */ 2138 2139/* 2140 * Connect socket 2141 */ 2142 2143int 2144ng_btsocket_l2cap_connect(struct socket *so, struct sockaddr *nam, 2145 struct thread *td) 2146{ 2147 ng_btsocket_l2cap_pcb_t *pcb = so2l2cap_pcb(so); 2148 struct sockaddr_l2cap_compat *sal = (struct sockaddr_l2cap_compat *) nam; 2149 struct sockaddr_l2cap *sa = (struct sockaddr_l2cap *)nam; 2150 struct sockaddr_l2cap ba; 2151 ng_btsocket_l2cap_rtentry_t *rt = NULL; 2152 int have_src, error = 0; 2153 int idtype = NG_L2CAP_L2CA_IDTYPE_BREDR; 2154 /* Check socket */ 2155 if (pcb == NULL) 2156 return (EINVAL); 2157 if (ng_btsocket_l2cap_node == NULL) 2158 return (EINVAL); 2159 if (pcb->state == NG_BTSOCKET_L2CAP_CONNECTING) 2160 return (EINPROGRESS); 2161 2162 /* Verify address */ 2163 if (sa == NULL) 2164 return (EINVAL); 2165 if (sa->l2cap_family != AF_BLUETOOTH) 2166 return (EAFNOSUPPORT); 2167 if (sa->l2cap_len == sizeof(*sal)){ 2168 bcopy(sal, &ba, sizeof(*sal)); 2169 sa = &ba; 2170 sa->l2cap_len = sizeof(*sa); 2171 sa->l2cap_bdaddr_type = BDADDR_BREDR; 2172 } 2173 if (sa->l2cap_len != sizeof(*sa)) 2174 return (EINVAL); 2175 if ((sa->l2cap_psm && sa->l2cap_cid)) 2176 return EINVAL; 2177 if (bcmp(&sa->l2cap_bdaddr, NG_HCI_BDADDR_ANY, sizeof(bdaddr_t)) == 0) 2178 return (EDESTADDRREQ); 2179 if((sa->l2cap_bdaddr_type == BDADDR_BREDR)&& 2180 (sa->l2cap_psm == 0)) 2181 return EDESTADDRREQ; 2182 if(sa->l2cap_bdaddr_type != BDADDR_BREDR){ 2183 if(sa->l2cap_cid == NG_L2CAP_ATT_CID){ 2184 idtype = NG_L2CAP_L2CA_IDTYPE_ATT; 2185 }else if (sa->l2cap_cid == NG_L2CAP_SMP_CID){ 2186 idtype =NG_L2CAP_L2CA_IDTYPE_SMP; 2187 }else{ 2188 //if cid == 0 idtype = NG_L2CAP_L2CA_IDTYPE_LE; 2189 // Not supported yet 2190 return EINVAL; 2191 } 2192 } 2193 if (pcb->psm != 0 && pcb->psm != le16toh(sa->l2cap_psm)) 2194 return (EINVAL); 2195 /* 2196 * Routing. Socket should be bound to some source address. The source 2197 * address can be ANY. Destination address must be set and it must not 2198 * be ANY. If source address is ANY then find first rtentry that has 2199 * src != dst. 2200 */ 2201 2202 mtx_lock(&ng_btsocket_l2cap_rt_mtx); 2203 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 2204 mtx_lock(&pcb->pcb_mtx); 2205 2206 /* Send destination address and PSM */ 2207 bcopy(&sa->l2cap_bdaddr, &pcb->dst, sizeof(pcb->dst)); 2208 pcb->psm = le16toh(sa->l2cap_psm); 2209 pcb->dsttype = sa->l2cap_bdaddr_type; 2210 pcb->cid = 0; 2211 pcb->idtype = idtype; 2212 pcb->rt = NULL; 2213 have_src = bcmp(&pcb->src, NG_HCI_BDADDR_ANY, sizeof(pcb->src)); 2214 2215 LIST_FOREACH(rt, &ng_btsocket_l2cap_rt, next) { 2216 if (rt->hook == NULL || NG_HOOK_NOT_VALID(rt->hook)) 2217 continue; 2218 2219 /* Match src and dst */ 2220 if (have_src) { 2221 if (bcmp(&pcb->src, &rt->src, sizeof(rt->src)) == 0) 2222 break; 2223 } else { 2224 if (bcmp(&pcb->dst, &rt->src, sizeof(rt->src)) != 0) 2225 break; 2226 } 2227 } 2228 2229 if (rt != NULL) { 2230 pcb->rt = rt; 2231 2232 if (!have_src){ 2233 bcopy(&rt->src, &pcb->src, sizeof(pcb->src)); 2234 pcb->srctype = 2235 (sa->l2cap_bdaddr_type == BDADDR_BREDR)? 2236 BDADDR_BREDR : BDADDR_LE_PUBLIC; 2237 } 2238 } else 2239 error = EHOSTUNREACH; 2240 2241 /* 2242 * Send L2CA_Connect request 2243 */ 2244 2245 if (error == 0) { 2246 error = ng_btsocket_l2cap_send_l2ca_con_req(pcb); 2247 if (error == 0) { 2248 pcb->flags |= NG_BTSOCKET_L2CAP_CLIENT; 2249 pcb->state = NG_BTSOCKET_L2CAP_CONNECTING; 2250 soisconnecting(pcb->so); 2251 2252 ng_btsocket_l2cap_timeout(pcb); 2253 } 2254 } 2255 2256 mtx_unlock(&pcb->pcb_mtx); 2257 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 2258 mtx_unlock(&ng_btsocket_l2cap_rt_mtx); 2259 2260 return (error); 2261} /* ng_btsocket_l2cap_connect */ 2262 2263/* 2264 * Process ioctl's calls on socket 2265 */ 2266 2267int 2268ng_btsocket_l2cap_control(struct socket *so, u_long cmd, void *data, 2269 struct ifnet *ifp, struct thread *td) 2270{ 2271 return (EINVAL); 2272} /* ng_btsocket_l2cap_control */ 2273 2274/* 2275 * Process getsockopt/setsockopt system calls 2276 */ 2277 2278int 2279ng_btsocket_l2cap_ctloutput(struct socket *so, struct sockopt *sopt) 2280{ 2281 ng_btsocket_l2cap_pcb_p pcb = so2l2cap_pcb(so); 2282 int error = 0; 2283 ng_l2cap_cfg_opt_val_t v; 2284 2285 if (pcb == NULL) 2286 return (EINVAL); 2287 if (ng_btsocket_l2cap_node == NULL) 2288 return (EINVAL); 2289 2290 if (sopt->sopt_level != SOL_L2CAP) 2291 return (0); 2292 2293 mtx_lock(&pcb->pcb_mtx); 2294 2295 switch (sopt->sopt_dir) { 2296 case SOPT_GET: 2297 switch (sopt->sopt_name) { 2298 case SO_L2CAP_IMTU: /* get incoming MTU */ 2299 error = sooptcopyout(sopt, &pcb->imtu, 2300 sizeof(pcb->imtu)); 2301 break; 2302 2303 case SO_L2CAP_OMTU: /* get outgoing (peer incoming) MTU */ 2304 error = sooptcopyout(sopt, &pcb->omtu, 2305 sizeof(pcb->omtu)); 2306 break; 2307 2308 case SO_L2CAP_IFLOW: /* get incoming flow spec. */ 2309 error = sooptcopyout(sopt, &pcb->iflow, 2310 sizeof(pcb->iflow)); 2311 break; 2312 2313 case SO_L2CAP_OFLOW: /* get outgoing flow spec. */ 2314 error = sooptcopyout(sopt, &pcb->oflow, 2315 sizeof(pcb->oflow)); 2316 break; 2317 2318 case SO_L2CAP_FLUSH: /* get flush timeout */ 2319 error = sooptcopyout(sopt, &pcb->flush_timo, 2320 sizeof(pcb->flush_timo)); 2321 break; 2322 case SO_L2CAP_ENCRYPTED: /* get encrypt required */ 2323 error = sooptcopyout(sopt, &pcb->need_encrypt, 2324 sizeof(pcb->need_encrypt)); 2325 break; 2326 2327 default: 2328 error = ENOPROTOOPT; 2329 break; 2330 } 2331 break; 2332 2333 case SOPT_SET: 2334 /* 2335 * XXX 2336 * We do not allow to change these parameters while socket is 2337 * connected or we are in the process of creating a connection. 2338 * May be this should indicate re-configuration of the open 2339 * channel? 2340 */ 2341 2342 if (pcb->state != NG_BTSOCKET_L2CAP_CLOSED) { 2343 error = EACCES; 2344 break; 2345 } 2346 2347 switch (sopt->sopt_name) { 2348 case SO_L2CAP_IMTU: /* set incoming MTU */ 2349 error = sooptcopyin(sopt, &v, sizeof(v), sizeof(v.mtu)); 2350 if (error == 0) 2351 pcb->imtu = v.mtu; 2352 break; 2353 2354 case SO_L2CAP_OFLOW: /* set outgoing flow spec. */ 2355 error = sooptcopyin(sopt, &v, sizeof(v),sizeof(v.flow)); 2356 if (error == 0) 2357 bcopy(&v.flow, &pcb->oflow, sizeof(pcb->oflow)); 2358 break; 2359 2360 case SO_L2CAP_FLUSH: /* set flush timeout */ 2361 error = sooptcopyin(sopt, &v, sizeof(v), 2362 sizeof(v.flush_timo)); 2363 if (error == 0) 2364 pcb->flush_timo = v.flush_timo; 2365 break; 2366 case SO_L2CAP_ENCRYPTED: /*set connect encryption opt*/ 2367 if((pcb->state != NG_BTSOCKET_L2CAP_OPEN) && 2368 (pcb->state != NG_BTSOCKET_L2CAP_W4_ENC_CHANGE)){ 2369 error = sooptcopyin(sopt, &v, sizeof(v), 2370 sizeof(v.encryption)); 2371 if(error == 0) 2372 pcb->need_encrypt = (v.encryption)?1:0; 2373 }else{ 2374 error = EINVAL; 2375 } 2376 break; 2377 default: 2378 error = ENOPROTOOPT; 2379 break; 2380 } 2381 break; 2382 2383 default: 2384 error = EINVAL; 2385 break; 2386 } 2387 2388 mtx_unlock(&pcb->pcb_mtx); 2389 2390 return (error); 2391} /* ng_btsocket_l2cap_ctloutput */ 2392 2393/* 2394 * Detach and destroy socket 2395 */ 2396 2397void 2398ng_btsocket_l2cap_detach(struct socket *so) 2399{ 2400 ng_btsocket_l2cap_pcb_p pcb = so2l2cap_pcb(so); 2401 2402 KASSERT(pcb != NULL, ("ng_btsocket_l2cap_detach: pcb == NULL")); 2403 2404 if (ng_btsocket_l2cap_node == NULL) 2405 return; 2406 2407 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 2408 mtx_lock(&pcb->pcb_mtx); 2409 2410 /* XXX what to do with pending request? */ 2411 if (pcb->flags & NG_BTSOCKET_L2CAP_TIMO) 2412 ng_btsocket_l2cap_untimeout(pcb); 2413 2414 if (pcb->state != NG_BTSOCKET_L2CAP_CLOSED && 2415 pcb->state != NG_BTSOCKET_L2CAP_DISCONNECTING) 2416 /* Send disconnect request with "zero" token */ 2417 ng_btsocket_l2cap_send_l2ca_discon_req(0, pcb); 2418 2419 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 2420 2421 LIST_REMOVE(pcb, next); 2422 2423 mtx_unlock(&pcb->pcb_mtx); 2424 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 2425 2426 mtx_destroy(&pcb->pcb_mtx); 2427 bzero(pcb, sizeof(*pcb)); 2428 free(pcb, M_NETGRAPH_BTSOCKET_L2CAP); 2429 2430 soisdisconnected(so); 2431 so->so_pcb = NULL; 2432} /* ng_btsocket_l2cap_detach */ 2433 2434/* 2435 * Disconnect socket 2436 */ 2437 2438int 2439ng_btsocket_l2cap_disconnect(struct socket *so) 2440{ 2441 ng_btsocket_l2cap_pcb_p pcb = so2l2cap_pcb(so); 2442 int error = 0; 2443 2444 if (pcb == NULL) 2445 return (EINVAL); 2446 if (ng_btsocket_l2cap_node == NULL) 2447 return (EINVAL); 2448 2449 mtx_lock(&pcb->pcb_mtx); 2450 2451 if (pcb->state == NG_BTSOCKET_L2CAP_DISCONNECTING) { 2452 mtx_unlock(&pcb->pcb_mtx); 2453 return (EINPROGRESS); 2454 } 2455 2456 if (pcb->state != NG_BTSOCKET_L2CAP_CLOSED) { 2457 /* XXX FIXME what to do with pending request? */ 2458 if (pcb->flags & NG_BTSOCKET_L2CAP_TIMO) 2459 ng_btsocket_l2cap_untimeout(pcb); 2460 2461 error = ng_btsocket_l2cap_send_l2ca_discon_req(pcb->token, pcb); 2462 if (error == 0) { 2463 pcb->state = NG_BTSOCKET_L2CAP_DISCONNECTING; 2464 soisdisconnecting(so); 2465 2466 ng_btsocket_l2cap_timeout(pcb); 2467 } 2468 2469 /* XXX FIXME what to do if error != 0 */ 2470 } 2471 2472 mtx_unlock(&pcb->pcb_mtx); 2473 2474 return (error); 2475} /* ng_btsocket_l2cap_disconnect */ 2476 2477/* 2478 * Listen on socket 2479 */ 2480 2481int 2482ng_btsocket_l2cap_listen(struct socket *so, int backlog, struct thread *td) 2483{ 2484 ng_btsocket_l2cap_pcb_p pcb = so2l2cap_pcb(so); 2485 int error; 2486 2487 SOCK_LOCK(so); 2488 error = solisten_proto_check(so); 2489 if (error != 0) 2490 goto out; 2491 if (pcb == NULL) { 2492 solisten_proto_abort(so); 2493 error = EINVAL; 2494 goto out; 2495 } 2496 if (ng_btsocket_l2cap_node == NULL) { 2497 solisten_proto_abort(so); 2498 error = EINVAL; 2499 goto out; 2500 } 2501 if (pcb->psm == 0) { 2502 solisten_proto_abort(so); 2503 error = EADDRNOTAVAIL; 2504 goto out; 2505 } 2506 solisten_proto(so, backlog); 2507out: 2508 SOCK_UNLOCK(so); 2509 return (error); 2510} /* ng_btsocket_listen */ 2511 2512/* 2513 * Return peer address for getpeername(2) or for accept(2). For the latter 2514 * case no extra work to do here, socket must be connected and ready. 2515 */ 2516int 2517ng_btsocket_l2cap_peeraddr(struct socket *so, struct sockaddr *sa) 2518{ 2519 ng_btsocket_l2cap_pcb_p pcb = so2l2cap_pcb(so); 2520 struct sockaddr_l2cap *l2cap = (struct sockaddr_l2cap *)sa; 2521 2522 if (pcb == NULL) 2523 return (EINVAL); 2524 if (ng_btsocket_l2cap_node == NULL) 2525 return (EINVAL); 2526 2527 *l2cap = (struct sockaddr_l2cap ){ 2528 .l2cap_len = sizeof(struct sockaddr_l2cap), 2529 .l2cap_family = AF_BLUETOOTH, 2530 .l2cap_psm = htole16(pcb->psm), 2531 }; 2532 bcopy(&pcb->dst, &l2cap->l2cap_bdaddr, sizeof(l2cap->l2cap_bdaddr)); 2533 switch(pcb->idtype){ 2534 case NG_L2CAP_L2CA_IDTYPE_ATT: 2535 l2cap->l2cap_cid = NG_L2CAP_ATT_CID; 2536 break; 2537 case NG_L2CAP_L2CA_IDTYPE_SMP: 2538 l2cap->l2cap_cid = NG_L2CAP_SMP_CID; 2539 break; 2540 default: 2541 l2cap->l2cap_cid = 0; 2542 break; 2543 } 2544 l2cap->l2cap_bdaddr_type = pcb->dsttype; 2545 2546 return (0); 2547} 2548 2549/* 2550 * Send data to socket 2551 */ 2552 2553int 2554ng_btsocket_l2cap_send(struct socket *so, int flags, struct mbuf *m, 2555 struct sockaddr *nam, struct mbuf *control, struct thread *td) 2556{ 2557 ng_btsocket_l2cap_pcb_t *pcb = so2l2cap_pcb(so); 2558 int error = 0; 2559 2560 if (ng_btsocket_l2cap_node == NULL) { 2561 error = ENETDOWN; 2562 goto drop; 2563 } 2564 2565 /* Check socket and input */ 2566 if (pcb == NULL || m == NULL || control != NULL) { 2567 error = EINVAL; 2568 goto drop; 2569 } 2570 2571 mtx_lock(&pcb->pcb_mtx); 2572 2573 /* Make sure socket is connected */ 2574 if (pcb->state != NG_BTSOCKET_L2CAP_OPEN) { 2575 mtx_unlock(&pcb->pcb_mtx); 2576 error = ENOTCONN; 2577 goto drop; 2578 } 2579 2580 /* Check route */ 2581 if (pcb->rt == NULL || 2582 pcb->rt->hook == NULL || NG_HOOK_NOT_VALID(pcb->rt->hook)) { 2583 mtx_unlock(&pcb->pcb_mtx); 2584 error = ENETDOWN; 2585 goto drop; 2586 } 2587 2588 /* Check packet size against outgoing (peer's incoming) MTU) */ 2589 if (m->m_pkthdr.len > pcb->omtu) { 2590 NG_BTSOCKET_L2CAP_ERR( 2591"%s: Packet too big, len=%d, omtu=%d\n", __func__, m->m_pkthdr.len, pcb->omtu); 2592 2593 mtx_unlock(&pcb->pcb_mtx); 2594 error = EMSGSIZE; 2595 goto drop; 2596 } 2597 2598 /* 2599 * First put packet on socket send queue. Then check if we have 2600 * pending timeout. If we do not have timeout then we must send 2601 * packet and schedule timeout. Otherwise do nothing and wait for 2602 * L2CA_WRITE_RSP. 2603 */ 2604 2605 sbappendrecord(&pcb->so->so_snd, m); 2606 m = NULL; 2607 2608 if (!(pcb->flags & NG_BTSOCKET_L2CAP_TIMO)) { 2609 error = ng_btsocket_l2cap_send2(pcb); 2610 if (error == 0) 2611 ng_btsocket_l2cap_timeout(pcb); 2612 else 2613 sbdroprecord(&pcb->so->so_snd); /* XXX */ 2614 } 2615 2616 mtx_unlock(&pcb->pcb_mtx); 2617drop: 2618 NG_FREE_M(m); /* checks for != NULL */ 2619 NG_FREE_M(control); 2620 2621 return (error); 2622} /* ng_btsocket_l2cap_send */ 2623 2624/* 2625 * Send first packet in the socket queue to the L2CAP layer 2626 */ 2627 2628static int 2629ng_btsocket_l2cap_send2(ng_btsocket_l2cap_pcb_p pcb) 2630{ 2631 struct mbuf *m = NULL; 2632 ng_l2cap_l2ca_hdr_t *hdr = NULL; 2633 int error = 0; 2634 2635 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 2636 2637 if (sbavail(&pcb->so->so_snd) == 0) 2638 return (EINVAL); /* XXX */ 2639 2640 m = m_dup(pcb->so->so_snd.sb_mb, M_NOWAIT); 2641 if (m == NULL) 2642 return (ENOBUFS); 2643 2644 /* Create L2CA packet header */ 2645 M_PREPEND(m, sizeof(*hdr), M_NOWAIT); 2646 if (m != NULL) 2647 if (m->m_len < sizeof(*hdr)) 2648 m = m_pullup(m, sizeof(*hdr)); 2649 2650 if (m == NULL) { 2651 NG_BTSOCKET_L2CAP_ERR( 2652"%s: Failed to create L2CA packet header\n", __func__); 2653 2654 return (ENOBUFS); 2655 } 2656 2657 hdr = mtod(m, ng_l2cap_l2ca_hdr_t *); 2658 hdr->token = pcb->token; 2659 hdr->length = m->m_pkthdr.len - sizeof(*hdr); 2660 hdr->lcid = pcb->cid; 2661 hdr->idtype = pcb->idtype; 2662 NG_BTSOCKET_L2CAP_INFO( 2663"%s: Sending packet: len=%d, length=%d, lcid=%d, token=%d, state=%d\n", 2664 __func__, m->m_pkthdr.len, hdr->length, hdr->lcid, 2665 hdr->token, pcb->state); 2666 2667 /* 2668 * If we got here than we have successfully creates new L2CAP 2669 * data packet and now we can send it to the L2CAP layer 2670 */ 2671 2672 NG_SEND_DATA_ONLY(error, pcb->rt->hook, m); 2673 2674 return (error); 2675} /* ng_btsocket_l2cap_send2 */ 2676 2677/* 2678 * Get socket address 2679 */ 2680int 2681ng_btsocket_l2cap_sockaddr(struct socket *so, struct sockaddr *sa) 2682{ 2683 ng_btsocket_l2cap_pcb_p pcb = so2l2cap_pcb(so); 2684 struct sockaddr_l2cap *l2cap = (struct sockaddr_l2cap *)sa; 2685 2686 if (pcb == NULL) 2687 return (EINVAL); 2688 if (ng_btsocket_l2cap_node == NULL) 2689 return (EINVAL); 2690 2691 *l2cap = (struct sockaddr_l2cap ){ 2692 .l2cap_len = sizeof(struct sockaddr_l2cap), 2693 .l2cap_family = AF_BLUETOOTH, 2694 .l2cap_psm = htole16(pcb->psm), 2695 .l2cap_bdaddr_type = pcb->srctype, 2696 }; 2697 bcopy(&pcb->src, &l2cap->l2cap_bdaddr, sizeof(l2cap->l2cap_bdaddr)); 2698 2699 return (0); 2700} 2701 2702/***************************************************************************** 2703 ***************************************************************************** 2704 ** Misc. functions 2705 ***************************************************************************** 2706 *****************************************************************************/ 2707 2708/* 2709 * Look for the socket that listens on given PSM and bdaddr. Returns exact or 2710 * close match (if any). Caller must hold ng_btsocket_l2cap_sockets_mtx. 2711 */ 2712 2713static ng_btsocket_l2cap_pcb_p 2714ng_btsocket_l2cap_pcb_by_addr(bdaddr_p bdaddr, int psm) 2715{ 2716 ng_btsocket_l2cap_pcb_p p = NULL, p1 = NULL; 2717 2718 mtx_assert(&ng_btsocket_l2cap_sockets_mtx, MA_OWNED); 2719 2720 LIST_FOREACH(p, &ng_btsocket_l2cap_sockets, next) { 2721 if (p->so == NULL || !SOLISTENING(p->so) || p->psm != psm) 2722 continue; 2723 2724 if (bcmp(&p->src, bdaddr, sizeof(p->src)) == 0) 2725 break; 2726 2727 if (bcmp(&p->src, NG_HCI_BDADDR_ANY, sizeof(p->src)) == 0) 2728 p1 = p; 2729 } 2730 2731 return ((p != NULL)? p : p1); 2732} /* ng_btsocket_l2cap_pcb_by_addr */ 2733 2734/* 2735 * Look for the socket that has given token. 2736 * Caller must hold ng_btsocket_l2cap_sockets_mtx. 2737 */ 2738 2739static ng_btsocket_l2cap_pcb_p 2740ng_btsocket_l2cap_pcb_by_token(u_int32_t token) 2741{ 2742 ng_btsocket_l2cap_pcb_p p = NULL; 2743 2744 if (token == 0) 2745 return (NULL); 2746 2747 mtx_assert(&ng_btsocket_l2cap_sockets_mtx, MA_OWNED); 2748 2749 LIST_FOREACH(p, &ng_btsocket_l2cap_sockets, next) 2750 if (p->token == token) 2751 break; 2752 2753 return (p); 2754} /* ng_btsocket_l2cap_pcb_by_token */ 2755 2756/* 2757 * Look for the socket that assigned to given source address and channel ID. 2758 * Caller must hold ng_btsocket_l2cap_sockets_mtx 2759 */ 2760 2761static ng_btsocket_l2cap_pcb_p 2762ng_btsocket_l2cap_pcb_by_cid(bdaddr_p src, int cid, int idtype) 2763{ 2764 ng_btsocket_l2cap_pcb_p p = NULL; 2765 2766 mtx_assert(&ng_btsocket_l2cap_sockets_mtx, MA_OWNED); 2767 2768 LIST_FOREACH(p, &ng_btsocket_l2cap_sockets, next){ 2769 if (p->cid == cid && 2770 bcmp(src, &p->src, sizeof(p->src)) == 0&& 2771 p->idtype == idtype) 2772 break; 2773 } 2774 return (p); 2775} /* ng_btsocket_l2cap_pcb_by_cid */ 2776 2777/* 2778 * Set timeout on socket 2779 */ 2780 2781static void 2782ng_btsocket_l2cap_timeout(ng_btsocket_l2cap_pcb_p pcb) 2783{ 2784 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 2785 2786 if (!(pcb->flags & NG_BTSOCKET_L2CAP_TIMO)) { 2787 pcb->flags |= NG_BTSOCKET_L2CAP_TIMO; 2788 callout_reset(&pcb->timo, bluetooth_l2cap_ertx_timeout(), 2789 ng_btsocket_l2cap_process_timeout, pcb); 2790 } else 2791 KASSERT(0, 2792("%s: Duplicated socket timeout?!\n", __func__)); 2793} /* ng_btsocket_l2cap_timeout */ 2794 2795/* 2796 * Unset timeout on socket 2797 */ 2798 2799static void 2800ng_btsocket_l2cap_untimeout(ng_btsocket_l2cap_pcb_p pcb) 2801{ 2802 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 2803 2804 if (pcb->flags & NG_BTSOCKET_L2CAP_TIMO) { 2805 callout_stop(&pcb->timo); 2806 pcb->flags &= ~NG_BTSOCKET_L2CAP_TIMO; 2807 } else 2808 KASSERT(0, 2809("%s: No socket timeout?!\n", __func__)); 2810} /* ng_btsocket_l2cap_untimeout */ 2811 2812/* 2813 * Process timeout on socket 2814 */ 2815 2816static void 2817ng_btsocket_l2cap_process_timeout(void *xpcb) 2818{ 2819 ng_btsocket_l2cap_pcb_p pcb = (ng_btsocket_l2cap_pcb_p) xpcb; 2820 2821 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 2822 2823 pcb->flags &= ~NG_BTSOCKET_L2CAP_TIMO; 2824 pcb->so->so_error = ETIMEDOUT; 2825 2826 switch (pcb->state) { 2827 case NG_BTSOCKET_L2CAP_CONNECTING: 2828 case NG_BTSOCKET_L2CAP_CONFIGURING: 2829 case NG_BTSOCKET_L2CAP_W4_ENC_CHANGE: 2830 /* Send disconnect request with "zero" token */ 2831 if (pcb->cid != 0) 2832 ng_btsocket_l2cap_send_l2ca_discon_req(0, pcb); 2833 2834 /* ... and close the socket */ 2835 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 2836 soisdisconnected(pcb->so); 2837 break; 2838 2839 case NG_BTSOCKET_L2CAP_OPEN: 2840 /* Send timeout - drop packet and wakeup sender */ 2841 sbdroprecord(&pcb->so->so_snd); 2842 sowwakeup(pcb->so); 2843 break; 2844 2845 case NG_BTSOCKET_L2CAP_DISCONNECTING: 2846 /* Disconnect timeout - disconnect the socket anyway */ 2847 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 2848 soisdisconnected(pcb->so); 2849 break; 2850 2851 default: 2852 NG_BTSOCKET_L2CAP_ERR( 2853"%s: Invalid socket state=%d\n", __func__, pcb->state); 2854 break; 2855 } 2856} /* ng_btsocket_l2cap_process_timeout */ 2857 2858/* 2859 * Translate HCI/L2CAP error code into "errno" code 2860 * XXX Note: Some L2CAP and HCI error codes have the same value, but 2861 * different meaning 2862 */ 2863 2864static int 2865ng_btsocket_l2cap_result2errno(int result) 2866{ 2867 switch (result) { 2868 case 0x00: /* No error */ 2869 return (0); 2870 2871 case 0x01: /* Unknown HCI command */ 2872 return (ENODEV); 2873 2874 case 0x02: /* No connection */ 2875 return (ENOTCONN); 2876 2877 case 0x03: /* Hardware failure */ 2878 return (EIO); 2879 2880 case 0x04: /* Page timeout */ 2881 return (EHOSTDOWN); 2882 2883 case 0x05: /* Authentication failure */ 2884 case 0x06: /* Key missing */ 2885 case 0x18: /* Pairing not allowed */ 2886 case 0x21: /* Role change not allowed */ 2887 case 0x24: /* LMP PSU not allowed */ 2888 case 0x25: /* Encryption mode not acceptable */ 2889 case 0x26: /* Unit key used */ 2890 return (EACCES); 2891 2892 case 0x07: /* Memory full */ 2893 return (ENOMEM); 2894 2895 case 0x08: /* Connection timeout */ 2896 case 0x10: /* Host timeout */ 2897 case 0x22: /* LMP response timeout */ 2898 case 0xee: /* HCI timeout */ 2899 case 0xeeee: /* L2CAP timeout */ 2900 return (ETIMEDOUT); 2901 2902 case 0x09: /* Max number of connections */ 2903 case 0x0a: /* Max number of SCO connections to a unit */ 2904 return (EMLINK); 2905 2906 case 0x0b: /* ACL connection already exists */ 2907 return (EEXIST); 2908 2909 case 0x0c: /* Command disallowed */ 2910 return (EBUSY); 2911 2912 case 0x0d: /* Host rejected due to limited resources */ 2913 case 0x0e: /* Host rejected due to securiity reasons */ 2914 case 0x0f: /* Host rejected due to remote unit is a personal unit */ 2915 case 0x1b: /* SCO offset rejected */ 2916 case 0x1c: /* SCO interval rejected */ 2917 case 0x1d: /* SCO air mode rejected */ 2918 return (ECONNREFUSED); 2919 2920 case 0x11: /* Unsupported feature or parameter value */ 2921 case 0x19: /* Unknown LMP PDU */ 2922 case 0x1a: /* Unsupported remote feature */ 2923 case 0x20: /* Unsupported LMP parameter value */ 2924 case 0x27: /* QoS is not supported */ 2925 case 0x29: /* Paring with unit key not supported */ 2926 return (EOPNOTSUPP); 2927 2928 case 0x12: /* Invalid HCI command parameter */ 2929 case 0x1e: /* Invalid LMP parameters */ 2930 return (EINVAL); 2931 2932 case 0x13: /* Other end terminated connection: User ended connection */ 2933 case 0x14: /* Other end terminated connection: Low resources */ 2934 case 0x15: /* Other end terminated connection: About to power off */ 2935 return (ECONNRESET); 2936 2937 case 0x16: /* Connection terminated by local host */ 2938 return (ECONNABORTED); 2939 2940#if 0 /* XXX not yet */ 2941 case 0x17: /* Repeated attempts */ 2942 case 0x1f: /* Unspecified error */ 2943 case 0x23: /* LMP error transaction collision */ 2944 case 0x28: /* Instant passed */ 2945#endif 2946 } 2947 2948 return (ENOSYS); 2949} /* ng_btsocket_l2cap_result2errno */ 2950