1 /* 2 * ng_btsocket_l2cap.c 3 */ 4 5 /*- 6 * Copyright (c) 2001-2002 Maksim Yevmenkin <m_evmenkin@yahoo.com> 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * $Id: ng_btsocket_l2cap.c,v 1.16 2003/09/14 23:29:06 max Exp $ 31 * $FreeBSD$ 32 */ 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/bitstring.h> 37 #include <sys/domain.h> 38 #include <sys/endian.h> 39 #include <sys/errno.h> 40 #include <sys/filedesc.h> 41 #include <sys/ioccom.h> 42 #include <sys/kernel.h> 43 #include <sys/lock.h> 44 #include <sys/malloc.h> 45 #include <sys/mbuf.h> 46 #include <sys/mutex.h> 47 #include <sys/protosw.h> 48 #include <sys/queue.h> 49 #include <sys/socket.h> 50 #include <sys/socketvar.h> 51 #include <sys/sysctl.h> 52 #include <sys/taskqueue.h> 53 54 #include <net/vnet.h> 55 56 #include <netgraph/ng_message.h> 57 #include <netgraph/netgraph.h> 58 #include <netgraph/bluetooth/include/ng_bluetooth.h> 59 #include <netgraph/bluetooth/include/ng_hci.h> 60 #include <netgraph/bluetooth/include/ng_l2cap.h> 61 #include <netgraph/bluetooth/include/ng_btsocket.h> 62 #include <netgraph/bluetooth/include/ng_btsocket_l2cap.h> 63 64 /* MALLOC define */ 65 #ifdef NG_SEPARATE_MALLOC 66 static MALLOC_DEFINE(M_NETGRAPH_BTSOCKET_L2CAP, "netgraph_btsocks_l2cap", 67 "Netgraph Bluetooth L2CAP sockets"); 68 #else 69 #define M_NETGRAPH_BTSOCKET_L2CAP M_NETGRAPH 70 #endif /* NG_SEPARATE_MALLOC */ 71 72 /* Netgraph node methods */ 73 static ng_constructor_t ng_btsocket_l2cap_node_constructor; 74 static ng_rcvmsg_t ng_btsocket_l2cap_node_rcvmsg; 75 static ng_shutdown_t ng_btsocket_l2cap_node_shutdown; 76 static ng_newhook_t ng_btsocket_l2cap_node_newhook; 77 static ng_connect_t ng_btsocket_l2cap_node_connect; 78 static ng_rcvdata_t ng_btsocket_l2cap_node_rcvdata; 79 static ng_disconnect_t ng_btsocket_l2cap_node_disconnect; 80 81 static void ng_btsocket_l2cap_input (void *, int); 82 static void ng_btsocket_l2cap_rtclean (void *, int); 83 84 /* Netgraph type descriptor */ 85 static struct ng_type typestruct = { 86 .version = NG_ABI_VERSION, 87 .name = NG_BTSOCKET_L2CAP_NODE_TYPE, 88 .constructor = ng_btsocket_l2cap_node_constructor, 89 .rcvmsg = ng_btsocket_l2cap_node_rcvmsg, 90 .shutdown = ng_btsocket_l2cap_node_shutdown, 91 .newhook = ng_btsocket_l2cap_node_newhook, 92 .connect = ng_btsocket_l2cap_node_connect, 93 .rcvdata = ng_btsocket_l2cap_node_rcvdata, 94 .disconnect = ng_btsocket_l2cap_node_disconnect, 95 }; 96 97 /* Globals */ 98 extern int ifqmaxlen; 99 static u_int32_t ng_btsocket_l2cap_debug_level; 100 static node_p ng_btsocket_l2cap_node; 101 static struct ng_bt_itemq ng_btsocket_l2cap_queue; 102 static struct mtx ng_btsocket_l2cap_queue_mtx; 103 static struct task ng_btsocket_l2cap_queue_task; 104 static LIST_HEAD(, ng_btsocket_l2cap_pcb) ng_btsocket_l2cap_sockets; 105 static struct mtx ng_btsocket_l2cap_sockets_mtx; 106 static LIST_HEAD(, ng_btsocket_l2cap_rtentry) ng_btsocket_l2cap_rt; 107 static struct mtx ng_btsocket_l2cap_rt_mtx; 108 static struct task ng_btsocket_l2cap_rt_task; 109 static struct timeval ng_btsocket_l2cap_lasttime; 110 static int ng_btsocket_l2cap_curpps; 111 112 /* Sysctl tree */ 113 SYSCTL_DECL(_net_bluetooth_l2cap_sockets); 114 static SYSCTL_NODE(_net_bluetooth_l2cap_sockets, OID_AUTO, seq, CTLFLAG_RW, 115 0, "Bluetooth SEQPACKET L2CAP sockets family"); 116 SYSCTL_UINT(_net_bluetooth_l2cap_sockets_seq, OID_AUTO, debug_level, 117 CTLFLAG_RW, 118 &ng_btsocket_l2cap_debug_level, NG_BTSOCKET_WARN_LEVEL, 119 "Bluetooth SEQPACKET L2CAP sockets debug level"); 120 SYSCTL_UINT(_net_bluetooth_l2cap_sockets_seq, OID_AUTO, queue_len, 121 CTLFLAG_RD, 122 &ng_btsocket_l2cap_queue.len, 0, 123 "Bluetooth SEQPACKET L2CAP sockets input queue length"); 124 SYSCTL_UINT(_net_bluetooth_l2cap_sockets_seq, OID_AUTO, queue_maxlen, 125 CTLFLAG_RD, 126 &ng_btsocket_l2cap_queue.maxlen, 0, 127 "Bluetooth SEQPACKET L2CAP sockets input queue max. length"); 128 SYSCTL_UINT(_net_bluetooth_l2cap_sockets_seq, OID_AUTO, queue_drops, 129 CTLFLAG_RD, 130 &ng_btsocket_l2cap_queue.drops, 0, 131 "Bluetooth SEQPACKET L2CAP sockets input queue drops"); 132 133 /* Debug */ 134 #define NG_BTSOCKET_L2CAP_INFO \ 135 if (ng_btsocket_l2cap_debug_level >= NG_BTSOCKET_INFO_LEVEL && \ 136 ppsratecheck(&ng_btsocket_l2cap_lasttime, &ng_btsocket_l2cap_curpps, 1)) \ 137 printf 138 139 #define NG_BTSOCKET_L2CAP_WARN \ 140 if (ng_btsocket_l2cap_debug_level >= NG_BTSOCKET_WARN_LEVEL && \ 141 ppsratecheck(&ng_btsocket_l2cap_lasttime, &ng_btsocket_l2cap_curpps, 1)) \ 142 printf 143 144 #define NG_BTSOCKET_L2CAP_ERR \ 145 if (ng_btsocket_l2cap_debug_level >= NG_BTSOCKET_ERR_LEVEL && \ 146 ppsratecheck(&ng_btsocket_l2cap_lasttime, &ng_btsocket_l2cap_curpps, 1)) \ 147 printf 148 149 #define NG_BTSOCKET_L2CAP_ALERT \ 150 if (ng_btsocket_l2cap_debug_level >= NG_BTSOCKET_ALERT_LEVEL && \ 151 ppsratecheck(&ng_btsocket_l2cap_lasttime, &ng_btsocket_l2cap_curpps, 1)) \ 152 printf 153 154 /* 155 * Netgraph message processing routines 156 */ 157 158 static int ng_btsocket_l2cap_process_l2ca_con_req_rsp 159 (struct ng_mesg *, ng_btsocket_l2cap_rtentry_p); 160 static int ng_btsocket_l2cap_process_l2ca_con_rsp_rsp 161 (struct ng_mesg *, ng_btsocket_l2cap_rtentry_p); 162 static int ng_btsocket_l2cap_process_l2ca_con_ind 163 (struct ng_mesg *, ng_btsocket_l2cap_rtentry_p); 164 165 static int ng_btsocket_l2cap_process_l2ca_cfg_req_rsp 166 (struct ng_mesg *, ng_btsocket_l2cap_rtentry_p); 167 static int ng_btsocket_l2cap_process_l2ca_cfg_rsp_rsp 168 (struct ng_mesg *, ng_btsocket_l2cap_rtentry_p); 169 static int ng_btsocket_l2cap_process_l2ca_cfg_ind 170 (struct ng_mesg *, ng_btsocket_l2cap_rtentry_p); 171 172 static int ng_btsocket_l2cap_process_l2ca_discon_rsp 173 (struct ng_mesg *, ng_btsocket_l2cap_rtentry_p); 174 static int ng_btsocket_l2cap_process_l2ca_discon_ind 175 (struct ng_mesg *, ng_btsocket_l2cap_rtentry_p); 176 177 static int ng_btsocket_l2cap_process_l2ca_write_rsp 178 (struct ng_mesg *, ng_btsocket_l2cap_rtentry_p); 179 180 /* 181 * Send L2CA_xxx messages to the lower layer 182 */ 183 184 static int ng_btsocket_l2cap_send_l2ca_con_req 185 (ng_btsocket_l2cap_pcb_p); 186 static int ng_btsocket_l2cap_send_l2ca_con_rsp_req 187 (u_int32_t, ng_btsocket_l2cap_rtentry_p, bdaddr_p, int, int, int, int); 188 static int ng_btsocket_l2cap_send_l2ca_cfg_req 189 (ng_btsocket_l2cap_pcb_p); 190 static int ng_btsocket_l2cap_send_l2ca_cfg_rsp 191 (ng_btsocket_l2cap_pcb_p); 192 static int ng_btsocket_l2cap_send_l2ca_discon_req 193 (u_int32_t, ng_btsocket_l2cap_pcb_p); 194 195 static int ng_btsocket_l2cap_send2 196 (ng_btsocket_l2cap_pcb_p); 197 198 /* 199 * Timeout processing routines 200 */ 201 202 static void ng_btsocket_l2cap_timeout (ng_btsocket_l2cap_pcb_p); 203 static void ng_btsocket_l2cap_untimeout (ng_btsocket_l2cap_pcb_p); 204 static void ng_btsocket_l2cap_process_timeout (void *); 205 206 /* 207 * Other stuff 208 */ 209 210 static ng_btsocket_l2cap_pcb_p ng_btsocket_l2cap_pcb_by_addr(bdaddr_p, int); 211 static ng_btsocket_l2cap_pcb_p ng_btsocket_l2cap_pcb_by_token(u_int32_t); 212 static ng_btsocket_l2cap_pcb_p ng_btsocket_l2cap_pcb_by_cid (bdaddr_p, int,int); 213 static int ng_btsocket_l2cap_result2errno(int); 214 215 static int ng_btsock_l2cap_addrtype_to_linktype(int addrtype); 216 217 #define ng_btsocket_l2cap_wakeup_input_task() \ 218 taskqueue_enqueue(taskqueue_swi_giant, &ng_btsocket_l2cap_queue_task) 219 220 #define ng_btsocket_l2cap_wakeup_route_task() \ 221 taskqueue_enqueue(taskqueue_swi_giant, &ng_btsocket_l2cap_rt_task) 222 223 224 225 int 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 ***************************************************************************** 240 ** Netgraph node interface 241 ***************************************************************************** 242 *****************************************************************************/ 243 244 /* 245 * Netgraph node constructor. Do not allow to create node of this type. 246 */ 247 248 static int 249 ng_btsocket_l2cap_node_constructor(node_p node) 250 { 251 return (EINVAL); 252 } /* ng_btsocket_l2cap_node_constructor */ 253 254 /* 255 * Do local shutdown processing. Let old node go and create new fresh one. 256 */ 257 258 static int 259 ng_btsocket_l2cap_node_shutdown(node_p node) 260 { 261 int error = 0; 262 263 NG_NODE_UNREF(node); 264 265 /* Create new node */ 266 error = ng_make_node_common(&typestruct, &ng_btsocket_l2cap_node); 267 if (error != 0) { 268 NG_BTSOCKET_L2CAP_ALERT( 269 "%s: Could not create Netgraph node, error=%d\n", __func__, error); 270 271 ng_btsocket_l2cap_node = NULL; 272 273 return (error); 274 } 275 276 error = ng_name_node(ng_btsocket_l2cap_node, 277 NG_BTSOCKET_L2CAP_NODE_TYPE); 278 if (error != 0) { 279 NG_BTSOCKET_L2CAP_ALERT( 280 "%s: Could not name Netgraph node, error=%d\n", __func__, error); 281 282 NG_NODE_UNREF(ng_btsocket_l2cap_node); 283 ng_btsocket_l2cap_node = NULL; 284 285 return (error); 286 } 287 288 return (0); 289 } /* ng_btsocket_l2cap_node_shutdown */ 290 291 /* 292 * We allow any hook to be connected to the node. 293 */ 294 295 static int 296 ng_btsocket_l2cap_node_newhook(node_p node, hook_p hook, char const *name) 297 { 298 return (0); 299 } /* ng_btsocket_l2cap_node_newhook */ 300 301 /* 302 * Just say "YEP, that's OK by me!" 303 */ 304 305 static int 306 ng_btsocket_l2cap_node_connect(hook_p hook) 307 { 308 NG_HOOK_SET_PRIVATE(hook, NULL); 309 NG_HOOK_REF(hook); /* Keep extra reference to the hook */ 310 311 #if 0 312 NG_HOOK_FORCE_QUEUE(NG_HOOK_PEER(hook)); 313 NG_HOOK_FORCE_QUEUE(hook); 314 #endif 315 316 return (0); 317 } /* ng_btsocket_l2cap_node_connect */ 318 319 /* 320 * Hook disconnection. Schedule route cleanup task 321 */ 322 323 static int 324 ng_btsocket_l2cap_node_disconnect(hook_p hook) 325 { 326 /* 327 * If hook has private information than we must have this hook in 328 * the routing table and must schedule cleaning for the routing table. 329 * Otherwise hook was connected but we never got "hook_info" message, 330 * so we have never added this hook to the routing table and it save 331 * to just delete it. 332 */ 333 334 if (NG_HOOK_PRIVATE(hook) != NULL) 335 return (ng_btsocket_l2cap_wakeup_route_task()); 336 337 NG_HOOK_UNREF(hook); /* Remove extra reference */ 338 339 return (0); 340 } /* ng_btsocket_l2cap_node_disconnect */ 341 342 /* 343 * Process incoming messages 344 */ 345 346 static int 347 ng_btsocket_l2cap_node_rcvmsg(node_p node, item_p item, hook_p hook) 348 { 349 struct ng_mesg *msg = NGI_MSG(item); /* item still has message */ 350 int error = 0; 351 352 if (msg != NULL && msg->header.typecookie == NGM_L2CAP_COOKIE) { 353 mtx_lock(&ng_btsocket_l2cap_queue_mtx); 354 if (NG_BT_ITEMQ_FULL(&ng_btsocket_l2cap_queue)) { 355 NG_BTSOCKET_L2CAP_ERR( 356 "%s: Input queue is full (msg)\n", __func__); 357 358 NG_BT_ITEMQ_DROP(&ng_btsocket_l2cap_queue); 359 NG_FREE_ITEM(item); 360 error = ENOBUFS; 361 } else { 362 if (hook != NULL) { 363 NG_HOOK_REF(hook); 364 NGI_SET_HOOK(item, hook); 365 } 366 367 NG_BT_ITEMQ_ENQUEUE(&ng_btsocket_l2cap_queue, item); 368 error = ng_btsocket_l2cap_wakeup_input_task(); 369 } 370 mtx_unlock(&ng_btsocket_l2cap_queue_mtx); 371 } else { 372 NG_FREE_ITEM(item); 373 error = EINVAL; 374 } 375 376 return (error); 377 } /* ng_btsocket_l2cap_node_rcvmsg */ 378 379 /* 380 * Receive data on a hook 381 */ 382 383 static int 384 ng_btsocket_l2cap_node_rcvdata(hook_p hook, item_p item) 385 { 386 int error = 0; 387 388 mtx_lock(&ng_btsocket_l2cap_queue_mtx); 389 if (NG_BT_ITEMQ_FULL(&ng_btsocket_l2cap_queue)) { 390 NG_BTSOCKET_L2CAP_ERR( 391 "%s: Input queue is full (data)\n", __func__); 392 393 NG_BT_ITEMQ_DROP(&ng_btsocket_l2cap_queue); 394 NG_FREE_ITEM(item); 395 error = ENOBUFS; 396 } else { 397 NG_HOOK_REF(hook); 398 NGI_SET_HOOK(item, hook); 399 400 NG_BT_ITEMQ_ENQUEUE(&ng_btsocket_l2cap_queue, item); 401 error = ng_btsocket_l2cap_wakeup_input_task(); 402 } 403 mtx_unlock(&ng_btsocket_l2cap_queue_mtx); 404 405 return (error); 406 } /* ng_btsocket_l2cap_node_rcvdata */ 407 408 /* 409 * Process L2CA_Connect respose. Socket layer must have initiated connection, 410 * so we have to have a socket associated with message token. 411 */ 412 413 static int 414 ng_btsocket_l2cap_process_l2ca_con_req_rsp(struct ng_mesg *msg, 415 ng_btsocket_l2cap_rtentry_p rt) 416 { 417 ng_l2cap_l2ca_con_op *op = NULL; 418 ng_btsocket_l2cap_pcb_t *pcb = NULL; 419 int error = 0; 420 421 if (msg->header.arglen != sizeof(*op)) 422 return (EMSGSIZE); 423 424 op = (ng_l2cap_l2ca_con_op *)(msg->data); 425 426 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 427 428 /* Look for the socket with the token */ 429 pcb = ng_btsocket_l2cap_pcb_by_token(msg->header.token); 430 if (pcb == NULL) { 431 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 432 return (ENOENT); 433 } 434 435 mtx_lock(&pcb->pcb_mtx); 436 437 NG_BTSOCKET_L2CAP_INFO( 438 "%s: Got L2CA_Connect response, token=%d, src bdaddr=%x:%x:%x:%x:%x:%x, " \ 439 "dst bdaddr=%x:%x:%x:%x:%x:%x, psm=%d, lcid=%d, result=%d, status=%d, " \ 440 "state=%d\n", __func__, msg->header.token, 441 pcb->src.b[5], pcb->src.b[4], pcb->src.b[3], 442 pcb->src.b[2], pcb->src.b[1], pcb->src.b[0], 443 pcb->dst.b[5], pcb->dst.b[4], pcb->dst.b[3], 444 pcb->dst.b[2], pcb->dst.b[1], pcb->dst.b[0], 445 pcb->psm, op->lcid, op->result, op->status, 446 pcb->state); 447 448 if (pcb->state != NG_BTSOCKET_L2CAP_CONNECTING) { 449 mtx_unlock(&pcb->pcb_mtx); 450 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 451 452 return (ENOENT); 453 } 454 455 ng_btsocket_l2cap_untimeout(pcb); 456 457 if (op->result == NG_L2CAP_PENDING) { 458 ng_btsocket_l2cap_timeout(pcb); 459 mtx_unlock(&pcb->pcb_mtx); 460 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 461 462 return (0); 463 } 464 465 if (op->result == NG_L2CAP_SUCCESS){ 466 if((pcb->idtype == NG_L2CAP_L2CA_IDTYPE_ATT)|| 467 (pcb->idtype == NG_L2CAP_L2CA_IDTYPE_SMP)){ 468 pcb->encryption = op->encryption; pcb->cid = op->lcid; 469 if(pcb->need_encrypt && !(pcb->encryption)){ 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 */ 519 520 static int 521 ng_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 */ 586 587 static int 588 ng_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 = NULL; 617 618 mtx_lock(&pcb->pcb_mtx); 619 620 /* 621 * First check the pending connections queue and if we have 622 * space then create new socket and set proper source address. 623 */ 624 625 if (pcb->so->so_qlen <= pcb->so->so_qlimit) { 626 CURVNET_SET(pcb->so->so_vnet); 627 so1 = sonewconn(pcb->so, 0); 628 CURVNET_RESTORE(); 629 } 630 631 if (so1 == NULL) { 632 result = NG_L2CAP_NO_RESOURCES; 633 goto respond; 634 } 635 636 /* 637 * If we got here than we have created new socket. So complete 638 * connection. If we we listening on specific address then copy 639 * source address from listening socket, otherwise copy source 640 * address from hook's routing information. 641 */ 642 643 pcb1 = so2l2cap_pcb(so1); 644 KASSERT((pcb1 != NULL), 645 ("%s: pcb1 == NULL\n", __func__)); 646 647 mtx_lock(&pcb1->pcb_mtx); 648 649 if (bcmp(&pcb->src, NG_HCI_BDADDR_ANY, sizeof(pcb->src)) != 0) 650 bcopy(&pcb->src, &pcb1->src, sizeof(pcb1->src)); 651 else 652 bcopy(&rt->src, &pcb1->src, sizeof(pcb1->src)); 653 654 pcb1->flags &= ~NG_BTSOCKET_L2CAP_CLIENT; 655 656 bcopy(&ip->bdaddr, &pcb1->dst, sizeof(pcb1->dst)); 657 pcb1->psm = ip->psm; 658 pcb1->cid = ip->lcid; 659 pcb1->rt = rt; 660 661 /* Copy socket settings */ 662 pcb1->imtu = pcb->imtu; 663 bcopy(&pcb->oflow, &pcb1->oflow, sizeof(pcb1->oflow)); 664 pcb1->flush_timo = pcb->flush_timo; 665 666 token = pcb1->token; 667 } else 668 /* Nobody listens on requested BDADDR/PSM */ 669 result = NG_L2CAP_PSM_NOT_SUPPORTED; 670 671 respond: 672 error = ng_btsocket_l2cap_send_l2ca_con_rsp_req(token, rt, 673 &ip->bdaddr, 674 ip->ident, ip->lcid, 675 result,ip->linktype); 676 if (pcb1 != NULL) { 677 if (error != 0) { 678 pcb1->so->so_error = error; 679 pcb1->state = NG_BTSOCKET_L2CAP_CLOSED; 680 soisdisconnected(pcb1->so); 681 } else { 682 pcb1->state = NG_BTSOCKET_L2CAP_CONNECTING; 683 soisconnecting(pcb1->so); 684 685 ng_btsocket_l2cap_timeout(pcb1); 686 } 687 688 mtx_unlock(&pcb1->pcb_mtx); 689 } 690 691 if (pcb != NULL) 692 mtx_unlock(&pcb->pcb_mtx); 693 694 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 695 696 return (error); 697 } /* ng_btsocket_l2cap_process_l2ca_con_ind */ 698 /*Encryption Change*/ 699 static int ng_btsocket_l2cap_process_l2ca_enc_change(struct ng_mesg *msg, ng_btsocket_l2cap_rtentry_p rt) 700 { 701 ng_l2cap_l2ca_enc_chg_op *op = NULL; 702 ng_btsocket_l2cap_pcb_t *pcb = NULL; 703 704 705 if (msg->header.arglen != sizeof(*op)) 706 return (EMSGSIZE); 707 708 op = (ng_l2cap_l2ca_enc_chg_op *)(msg->data); 709 710 pcb = ng_btsocket_l2cap_pcb_by_cid(&rt->src, op->lcid, 711 op->idtype); 712 mtx_lock(&pcb->pcb_mtx); 713 pcb->encryption = op->result; 714 715 if(pcb->need_encrypt){ 716 if(pcb->state != NG_BTSOCKET_L2CAP_W4_ENC_CHANGE){ 717 NG_BTSOCKET_L2CAP_WARN("%s: Invalid pcb status %d", 718 __func__, pcb->state); 719 }else if(pcb->encryption){ 720 pcb->state = NG_BTSOCKET_L2CAP_OPEN; 721 soisconnected(pcb->so); 722 }else{ 723 pcb->so->so_error = EPERM; 724 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 725 soisdisconnected(pcb->so); 726 } 727 } 728 mtx_unlock(&pcb->pcb_mtx); 729 730 return 0; 731 } 732 /* 733 * Process L2CA_Config response 734 */ 735 736 static int 737 ng_btsocket_l2cap_process_l2ca_cfg_req_rsp(struct ng_mesg *msg, 738 ng_btsocket_l2cap_rtentry_p rt) 739 { 740 ng_l2cap_l2ca_cfg_op *op = NULL; 741 ng_btsocket_l2cap_pcb_p pcb = NULL; 742 743 if (msg->header.arglen != sizeof(*op)) 744 return (EMSGSIZE); 745 746 op = (ng_l2cap_l2ca_cfg_op *)(msg->data); 747 748 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 749 750 /* 751 * Socket must have issued a Configure request, so we must have a 752 * socket that wants to be configured. Use Netgraph message token 753 * to find it 754 */ 755 756 pcb = ng_btsocket_l2cap_pcb_by_token(msg->header.token); 757 if (pcb == NULL) { 758 /* 759 * XXX FIXME what to do here? We could not find a 760 * socket with requested token. We even can not send 761 * Disconnect, because we do not know channel ID 762 */ 763 764 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 765 return (ENOENT); 766 } 767 768 mtx_lock(&pcb->pcb_mtx); 769 770 NG_BTSOCKET_L2CAP_INFO( 771 "%s: Got L2CA_Config response, token=%d, src bdaddr=%x:%x:%x:%x:%x:%x, " \ 772 "dst bdaddr=%x:%x:%x:%x:%x:%x, psm=%d, lcid=%d, result=%d, state=%d, " \ 773 "cfg_state=%x\n", 774 __func__, msg->header.token, 775 pcb->src.b[5], pcb->src.b[4], pcb->src.b[3], 776 pcb->src.b[2], pcb->src.b[1], pcb->src.b[0], 777 pcb->dst.b[5], pcb->dst.b[4], pcb->dst.b[3], 778 pcb->dst.b[2], pcb->dst.b[1], pcb->dst.b[0], 779 pcb->psm, pcb->cid, op->result, pcb->state, pcb->cfg_state); 780 781 if (pcb->state != NG_BTSOCKET_L2CAP_CONFIGURING) { 782 mtx_unlock(&pcb->pcb_mtx); 783 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 784 785 return (ENOENT); 786 } 787 788 if (op->result == NG_L2CAP_SUCCESS) { 789 /* 790 * XXX FIXME Actually set flush and link timeout. 791 * Set QoS here if required. Resolve conficts (flush_timo). 792 * Save incoming MTU (peer's outgoing MTU) and outgoing flow 793 * spec. 794 */ 795 796 pcb->imtu = op->imtu; 797 bcopy(&op->oflow, &pcb->oflow, sizeof(pcb->oflow)); 798 pcb->flush_timo = op->flush_timo; 799 800 /* 801 * We have configured incoming side, so record it and check 802 * if configuration is complete. If complete then mark socket 803 * as connected, otherwise wait for the peer. 804 */ 805 806 pcb->cfg_state &= ~NG_BTSOCKET_L2CAP_CFG_IN_SENT; 807 pcb->cfg_state |= NG_BTSOCKET_L2CAP_CFG_IN; 808 809 if (pcb->cfg_state == NG_BTSOCKET_L2CAP_CFG_BOTH) { 810 /* Configuration complete - mark socket as open */ 811 ng_btsocket_l2cap_untimeout(pcb); 812 pcb->state = NG_BTSOCKET_L2CAP_OPEN; 813 soisconnected(pcb->so); 814 } 815 } else { 816 /* 817 * Something went wrong. Could be unacceptable parameters, 818 * reject or unknown option. That's too bad, but we will 819 * not negotiate. Send Disconnect and close the channel. 820 */ 821 822 ng_btsocket_l2cap_untimeout(pcb); 823 824 switch (op->result) { 825 case NG_L2CAP_UNACCEPTABLE_PARAMS: 826 case NG_L2CAP_UNKNOWN_OPTION: 827 pcb->so->so_error = EINVAL; 828 break; 829 830 default: 831 pcb->so->so_error = ECONNRESET; 832 break; 833 } 834 835 /* Send disconnect with "zero" token */ 836 ng_btsocket_l2cap_send_l2ca_discon_req(0, pcb); 837 838 /* ... and close the socket */ 839 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 840 soisdisconnected(pcb->so); 841 } 842 843 mtx_unlock(&pcb->pcb_mtx); 844 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 845 846 return (0); 847 } /* ng_btsocket_l2cap_process_l2ca_cfg_req_rsp */ 848 849 /* 850 * Process L2CA_ConfigRsp response 851 */ 852 853 static int 854 ng_btsocket_l2cap_process_l2ca_cfg_rsp_rsp(struct ng_mesg *msg, 855 ng_btsocket_l2cap_rtentry_p rt) 856 { 857 ng_l2cap_l2ca_cfg_rsp_op *op = NULL; 858 ng_btsocket_l2cap_pcb_t *pcb = NULL; 859 int error = 0; 860 861 if (msg->header.arglen != sizeof(*op)) 862 return (EMSGSIZE); 863 864 op = (ng_l2cap_l2ca_cfg_rsp_op *)(msg->data); 865 866 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 867 868 /* Look for the socket with the token */ 869 pcb = ng_btsocket_l2cap_pcb_by_token(msg->header.token); 870 if (pcb == NULL) { 871 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 872 return (ENOENT); 873 } 874 875 mtx_lock(&pcb->pcb_mtx); 876 877 NG_BTSOCKET_L2CAP_INFO( 878 "%s: Got L2CA_ConfigRsp response, token=%d, src bdaddr=%x:%x:%x:%x:%x:%x, " \ 879 "dst bdaddr=%x:%x:%x:%x:%x:%x, psm=%d, lcid=%d, result=%d, state=%d, " \ 880 "cfg_state=%x\n", 881 __func__, msg->header.token, 882 pcb->src.b[5], pcb->src.b[4], pcb->src.b[3], 883 pcb->src.b[2], pcb->src.b[1], pcb->src.b[0], 884 pcb->dst.b[5], pcb->dst.b[4], pcb->dst.b[3], 885 pcb->dst.b[2], pcb->dst.b[1], pcb->dst.b[0], 886 pcb->psm, pcb->cid, op->result, pcb->state, pcb->cfg_state); 887 888 if (pcb->state != NG_BTSOCKET_L2CAP_CONFIGURING) { 889 mtx_unlock(&pcb->pcb_mtx); 890 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 891 892 return (ENOENT); 893 } 894 895 /* Check the result and disconnect socket of failure */ 896 if (op->result != NG_L2CAP_SUCCESS) 897 goto disconnect; 898 899 /* 900 * Now we done with remote side configuration. Configure local 901 * side if we have not done it yet. 902 */ 903 904 pcb->cfg_state &= ~NG_BTSOCKET_L2CAP_CFG_OUT_SENT; 905 pcb->cfg_state |= NG_BTSOCKET_L2CAP_CFG_OUT; 906 907 if (pcb->cfg_state == NG_BTSOCKET_L2CAP_CFG_BOTH) { 908 /* Configuration complete - mask socket as open */ 909 ng_btsocket_l2cap_untimeout(pcb); 910 pcb->state = NG_BTSOCKET_L2CAP_OPEN; 911 soisconnected(pcb->so); 912 } else { 913 if (!(pcb->cfg_state & NG_BTSOCKET_L2CAP_CFG_IN_SENT)) { 914 /* Send L2CA_Config request - incoming path */ 915 error = ng_btsocket_l2cap_send_l2ca_cfg_req(pcb); 916 if (error != 0) 917 goto disconnect; 918 919 pcb->cfg_state |= NG_BTSOCKET_L2CAP_CFG_IN_SENT; 920 } 921 } 922 923 mtx_unlock(&pcb->pcb_mtx); 924 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 925 926 return (error); 927 928 disconnect: 929 ng_btsocket_l2cap_untimeout(pcb); 930 931 /* Send disconnect with "zero" token */ 932 ng_btsocket_l2cap_send_l2ca_discon_req(0, pcb); 933 934 /* ... and close the socket */ 935 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 936 soisdisconnected(pcb->so); 937 938 mtx_unlock(&pcb->pcb_mtx); 939 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 940 941 return (error); 942 } /* ng_btsocket_l2cap_process_l2ca_cfg_rsp_rsp */ 943 944 /* 945 * Process L2CA_Config indicator 946 */ 947 948 static int 949 ng_btsocket_l2cap_process_l2ca_cfg_ind(struct ng_mesg *msg, 950 ng_btsocket_l2cap_rtentry_p rt) 951 { 952 ng_l2cap_l2ca_cfg_ind_ip *ip = NULL; 953 ng_btsocket_l2cap_pcb_t *pcb = NULL; 954 int error = 0; 955 956 if (msg->header.arglen != sizeof(*ip)) 957 return (EMSGSIZE); 958 959 ip = (ng_l2cap_l2ca_cfg_ind_ip *)(msg->data); 960 961 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 962 963 /* Check for the open socket that has given channel ID */ 964 pcb = ng_btsocket_l2cap_pcb_by_cid(&rt->src, ip->lcid, 965 NG_L2CAP_L2CA_IDTYPE_BREDR); 966 if (pcb == NULL) { 967 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 968 return (ENOENT); 969 } 970 971 mtx_lock(&pcb->pcb_mtx); 972 973 NG_BTSOCKET_L2CAP_INFO( 974 "%s: Got L2CA_Config indicator, src bdaddr=%x:%x:%x:%x:%x:%x, " \ 975 "dst bdaddr=%x:%x:%x:%x:%x:%x, psm=%d, lcid=%d, state=%d, cfg_state=%x\n", 976 __func__, 977 pcb->src.b[5], pcb->src.b[4], pcb->src.b[3], 978 pcb->src.b[2], pcb->src.b[1], pcb->src.b[0], 979 pcb->dst.b[5], pcb->dst.b[4], pcb->dst.b[3], 980 pcb->dst.b[2], pcb->dst.b[1], pcb->dst.b[0], 981 pcb->psm, pcb->cid, pcb->state, pcb->cfg_state); 982 983 /* XXX FIXME re-configuration on open socket */ 984 if (pcb->state != NG_BTSOCKET_L2CAP_CONFIGURING) { 985 mtx_unlock(&pcb->pcb_mtx); 986 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 987 988 return (ENOENT); 989 } 990 991 /* 992 * XXX FIXME Actually set flush and link timeout. Set QoS here if 993 * required. Resolve conficts (flush_timo). Note outgoing MTU (peer's 994 * incoming MTU) and incoming flow spec. 995 */ 996 997 pcb->omtu = ip->omtu; 998 bcopy(&ip->iflow, &pcb->iflow, sizeof(pcb->iflow)); 999 pcb->flush_timo = ip->flush_timo; 1000 1001 /* 1002 * Send L2CA_Config response to our peer and check for the errors, 1003 * if any send disconnect to close the channel. 1004 */ 1005 1006 if (!(pcb->cfg_state & NG_BTSOCKET_L2CAP_CFG_OUT_SENT)) { 1007 error = ng_btsocket_l2cap_send_l2ca_cfg_rsp(pcb); 1008 if (error != 0) { 1009 ng_btsocket_l2cap_untimeout(pcb); 1010 1011 pcb->so->so_error = error; 1012 1013 /* Send disconnect with "zero" token */ 1014 ng_btsocket_l2cap_send_l2ca_discon_req(0, pcb); 1015 1016 /* ... and close the socket */ 1017 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 1018 soisdisconnected(pcb->so); 1019 } else 1020 pcb->cfg_state |= NG_BTSOCKET_L2CAP_CFG_OUT_SENT; 1021 } 1022 1023 mtx_unlock(&pcb->pcb_mtx); 1024 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1025 1026 return (error); 1027 } /* ng_btsocket_l2cap_process_l2cap_cfg_ind */ 1028 1029 /* 1030 * Process L2CA_Disconnect response 1031 */ 1032 1033 static int 1034 ng_btsocket_l2cap_process_l2ca_discon_rsp(struct ng_mesg *msg, 1035 ng_btsocket_l2cap_rtentry_p rt) 1036 { 1037 ng_l2cap_l2ca_discon_op *op = NULL; 1038 ng_btsocket_l2cap_pcb_t *pcb = NULL; 1039 1040 /* Check message */ 1041 if (msg->header.arglen != sizeof(*op)) 1042 return (EMSGSIZE); 1043 1044 op = (ng_l2cap_l2ca_discon_op *)(msg->data); 1045 1046 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 1047 1048 /* 1049 * Socket layer must have issued L2CA_Disconnect request, so there 1050 * must be a socket that wants to be disconnected. Use Netgraph 1051 * message token to find it. 1052 */ 1053 1054 pcb = ng_btsocket_l2cap_pcb_by_token(msg->header.token); 1055 if (pcb == NULL) { 1056 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1057 return (0); 1058 } 1059 1060 mtx_lock(&pcb->pcb_mtx); 1061 1062 /* XXX Close socket no matter what op->result says */ 1063 if (pcb->state != NG_BTSOCKET_L2CAP_CLOSED) { 1064 NG_BTSOCKET_L2CAP_INFO( 1065 "%s: Got L2CA_Disconnect response, token=%d, src bdaddr=%x:%x:%x:%x:%x:%x, " \ 1066 "dst bdaddr=%x:%x:%x:%x:%x:%x, psm=%d, lcid=%d, result=%d, state=%d\n", 1067 __func__, msg->header.token, 1068 pcb->src.b[5], pcb->src.b[4], pcb->src.b[3], 1069 pcb->src.b[2], pcb->src.b[1], pcb->src.b[0], 1070 pcb->dst.b[5], pcb->dst.b[4], pcb->dst.b[3], 1071 pcb->dst.b[2], pcb->dst.b[1], pcb->dst.b[0], 1072 pcb->psm, pcb->cid, op->result, pcb->state); 1073 1074 ng_btsocket_l2cap_untimeout(pcb); 1075 1076 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 1077 soisdisconnected(pcb->so); 1078 } 1079 1080 mtx_unlock(&pcb->pcb_mtx); 1081 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1082 1083 return (0); 1084 } /* ng_btsocket_l2cap_process_l2ca_discon_rsp */ 1085 1086 /* 1087 * Process L2CA_Disconnect indicator 1088 */ 1089 1090 static int 1091 ng_btsocket_l2cap_process_l2ca_discon_ind(struct ng_mesg *msg, 1092 ng_btsocket_l2cap_rtentry_p rt) 1093 { 1094 ng_l2cap_l2ca_discon_ind_ip *ip = NULL; 1095 ng_btsocket_l2cap_pcb_t *pcb = NULL; 1096 1097 /* Check message */ 1098 if (msg->header.arglen != sizeof(*ip)) 1099 return (EMSGSIZE); 1100 1101 ip = (ng_l2cap_l2ca_discon_ind_ip *)(msg->data); 1102 1103 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 1104 1105 /* Look for the socket with given channel ID */ 1106 pcb = ng_btsocket_l2cap_pcb_by_cid(&rt->src, ip->lcid, 1107 NG_L2CAP_L2CA_IDTYPE_BREDR); 1108 if (pcb == NULL) { 1109 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1110 return (0); 1111 } 1112 1113 /* 1114 * Channel has already been destroyed, so disconnect the socket 1115 * and be done with it. If there was any pending request we can 1116 * not do anything here anyway. 1117 */ 1118 1119 mtx_lock(&pcb->pcb_mtx); 1120 1121 NG_BTSOCKET_L2CAP_INFO( 1122 "%s: Got L2CA_Disconnect indicator, src bdaddr=%x:%x:%x:%x:%x:%x, " \ 1123 "dst bdaddr=%x:%x:%x:%x:%x:%x, psm=%d, lcid=%d, state=%d\n", 1124 __func__, 1125 pcb->src.b[5], pcb->src.b[4], pcb->src.b[3], 1126 pcb->src.b[2], pcb->src.b[1], pcb->src.b[0], 1127 pcb->dst.b[5], pcb->dst.b[4], pcb->dst.b[3], 1128 pcb->dst.b[2], pcb->dst.b[1], pcb->dst.b[0], 1129 pcb->psm, pcb->cid, pcb->state); 1130 1131 if (pcb->flags & NG_BTSOCKET_L2CAP_TIMO) 1132 ng_btsocket_l2cap_untimeout(pcb); 1133 1134 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 1135 soisdisconnected(pcb->so); 1136 1137 mtx_unlock(&pcb->pcb_mtx); 1138 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1139 1140 return (0); 1141 } /* ng_btsocket_l2cap_process_l2ca_discon_ind */ 1142 1143 /* 1144 * Process L2CA_Write response 1145 */ 1146 1147 static int 1148 ng_btsocket_l2cap_process_l2ca_write_rsp(struct ng_mesg *msg, 1149 ng_btsocket_l2cap_rtentry_p rt) 1150 { 1151 ng_l2cap_l2ca_write_op *op = NULL; 1152 ng_btsocket_l2cap_pcb_t *pcb = NULL; 1153 1154 /* Check message */ 1155 if (msg->header.arglen != sizeof(*op)) 1156 return (EMSGSIZE); 1157 1158 op = (ng_l2cap_l2ca_write_op *)(msg->data); 1159 1160 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 1161 1162 /* Look for the socket with given token */ 1163 pcb = ng_btsocket_l2cap_pcb_by_token(msg->header.token); 1164 if (pcb == NULL) { 1165 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1166 return (ENOENT); 1167 } 1168 1169 mtx_lock(&pcb->pcb_mtx); 1170 1171 NG_BTSOCKET_L2CAP_INFO( 1172 "%s: Got L2CA_Write response, src bdaddr=%x:%x:%x:%x:%x:%x, " \ 1173 "dst bdaddr=%x:%x:%x:%x:%x:%x, psm=%d, lcid=%d, result=%d, length=%d, " \ 1174 "state=%d\n", __func__, 1175 pcb->src.b[5], pcb->src.b[4], pcb->src.b[3], 1176 pcb->src.b[2], pcb->src.b[1], pcb->src.b[0], 1177 pcb->dst.b[5], pcb->dst.b[4], pcb->dst.b[3], 1178 pcb->dst.b[2], pcb->dst.b[1], pcb->dst.b[0], 1179 pcb->psm, pcb->cid, op->result, op->length, 1180 pcb->state); 1181 1182 if (pcb->state != NG_BTSOCKET_L2CAP_OPEN) { 1183 mtx_unlock(&pcb->pcb_mtx); 1184 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1185 1186 return (ENOENT); 1187 } 1188 1189 ng_btsocket_l2cap_untimeout(pcb); 1190 1191 /* 1192 * Check if we have more data to send 1193 */ 1194 sbdroprecord(&pcb->so->so_snd); 1195 if (sbavail(&pcb->so->so_snd) > 0) { 1196 if (ng_btsocket_l2cap_send2(pcb) == 0) 1197 ng_btsocket_l2cap_timeout(pcb); 1198 else 1199 sbdroprecord(&pcb->so->so_snd); /* XXX */ 1200 } 1201 1202 /* 1203 * Now set the result, drop packet from the socket send queue and 1204 * ask for more (wakeup sender) 1205 */ 1206 1207 pcb->so->so_error = ng_btsocket_l2cap_result2errno(op->result); 1208 sowwakeup(pcb->so); 1209 1210 mtx_unlock(&pcb->pcb_mtx); 1211 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1212 1213 return (0); 1214 } /* ng_btsocket_l2cap_process_l2ca_write_rsp */ 1215 1216 /* 1217 * Send L2CA_Connect request 1218 */ 1219 1220 static int 1221 ng_btsocket_l2cap_send_l2ca_con_req(ng_btsocket_l2cap_pcb_p pcb) 1222 { 1223 struct ng_mesg *msg = NULL; 1224 ng_l2cap_l2ca_con_ip *ip = NULL; 1225 int error = 0; 1226 1227 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 1228 1229 if (pcb->rt == NULL || 1230 pcb->rt->hook == NULL || NG_HOOK_NOT_VALID(pcb->rt->hook)) 1231 return (ENETDOWN); 1232 1233 NG_MKMESSAGE(msg, NGM_L2CAP_COOKIE, NGM_L2CAP_L2CA_CON, 1234 sizeof(*ip), M_NOWAIT); 1235 if (msg == NULL) 1236 return (ENOMEM); 1237 1238 msg->header.token = pcb->token; 1239 1240 ip = (ng_l2cap_l2ca_con_ip *)(msg->data); 1241 bcopy(&pcb->dst, &ip->bdaddr, sizeof(ip->bdaddr)); 1242 ip->psm = pcb->psm; 1243 ip->linktype = ng_btsock_l2cap_addrtype_to_linktype(pcb->dsttype); 1244 ip->idtype = pcb->idtype; 1245 NG_SEND_MSG_HOOK(error, ng_btsocket_l2cap_node, msg,pcb->rt->hook, 0); 1246 1247 return (error); 1248 } /* ng_btsocket_l2cap_send_l2ca_con_req */ 1249 1250 /* 1251 * Send L2CA_Connect response 1252 */ 1253 1254 static int 1255 ng_btsocket_l2cap_send_l2ca_con_rsp_req(u_int32_t token, 1256 ng_btsocket_l2cap_rtentry_p rt, bdaddr_p dst, int ident, 1257 int lcid, int result, int linktype) 1258 { 1259 struct ng_mesg *msg = NULL; 1260 ng_l2cap_l2ca_con_rsp_ip *ip = NULL; 1261 int error = 0; 1262 1263 if (rt == NULL || rt->hook == NULL || NG_HOOK_NOT_VALID(rt->hook)) 1264 return (ENETDOWN); 1265 1266 NG_MKMESSAGE(msg, NGM_L2CAP_COOKIE, NGM_L2CAP_L2CA_CON_RSP, 1267 sizeof(*ip), M_NOWAIT); 1268 if (msg == NULL) 1269 return (ENOMEM); 1270 1271 msg->header.token = token; 1272 1273 ip = (ng_l2cap_l2ca_con_rsp_ip *)(msg->data); 1274 bcopy(dst, &ip->bdaddr, sizeof(ip->bdaddr)); 1275 ip->ident = ident; 1276 ip->lcid = lcid; 1277 ip->linktype = linktype; 1278 ip->result = result; 1279 ip->status = 0; 1280 1281 NG_SEND_MSG_HOOK(error, ng_btsocket_l2cap_node, msg, rt->hook, 0); 1282 1283 return (error); 1284 } /* ng_btsocket_l2cap_send_l2ca_con_rsp_req */ 1285 1286 /* 1287 * Send L2CA_Config request 1288 */ 1289 1290 static int 1291 ng_btsocket_l2cap_send_l2ca_cfg_req(ng_btsocket_l2cap_pcb_p pcb) 1292 { 1293 struct ng_mesg *msg = NULL; 1294 ng_l2cap_l2ca_cfg_ip *ip = NULL; 1295 int error = 0; 1296 1297 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 1298 1299 if (pcb->rt == NULL || 1300 pcb->rt->hook == NULL || NG_HOOK_NOT_VALID(pcb->rt->hook)) 1301 return (ENETDOWN); 1302 1303 NG_MKMESSAGE(msg, NGM_L2CAP_COOKIE, NGM_L2CAP_L2CA_CFG, 1304 sizeof(*ip), M_NOWAIT); 1305 if (msg == NULL) 1306 return (ENOMEM); 1307 1308 msg->header.token = pcb->token; 1309 1310 ip = (ng_l2cap_l2ca_cfg_ip *)(msg->data); 1311 ip->lcid = pcb->cid; 1312 ip->imtu = pcb->imtu; 1313 bcopy(&pcb->oflow, &ip->oflow, sizeof(ip->oflow)); 1314 ip->flush_timo = pcb->flush_timo; 1315 ip->link_timo = pcb->link_timo; 1316 1317 NG_SEND_MSG_HOOK(error, ng_btsocket_l2cap_node, msg,pcb->rt->hook, 0); 1318 1319 return (error); 1320 } /* ng_btsocket_l2cap_send_l2ca_cfg_req */ 1321 1322 /* 1323 * Send L2CA_Config response 1324 */ 1325 1326 static int 1327 ng_btsocket_l2cap_send_l2ca_cfg_rsp(ng_btsocket_l2cap_pcb_p pcb) 1328 { 1329 struct ng_mesg *msg = NULL; 1330 ng_l2cap_l2ca_cfg_rsp_ip *ip = NULL; 1331 int error = 0; 1332 1333 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 1334 1335 if (pcb->rt == NULL || 1336 pcb->rt->hook == NULL || NG_HOOK_NOT_VALID(pcb->rt->hook)) 1337 return (ENETDOWN); 1338 1339 NG_MKMESSAGE(msg, NGM_L2CAP_COOKIE, NGM_L2CAP_L2CA_CFG_RSP, 1340 sizeof(*ip), M_NOWAIT); 1341 if (msg == NULL) 1342 return (ENOMEM); 1343 1344 msg->header.token = pcb->token; 1345 1346 ip = (ng_l2cap_l2ca_cfg_rsp_ip *)(msg->data); 1347 ip->lcid = pcb->cid; 1348 ip->omtu = pcb->omtu; 1349 bcopy(&pcb->iflow, &ip->iflow, sizeof(ip->iflow)); 1350 1351 NG_SEND_MSG_HOOK(error, ng_btsocket_l2cap_node, msg, pcb->rt->hook, 0); 1352 1353 return (error); 1354 } /* ng_btsocket_l2cap_send_l2ca_cfg_rsp */ 1355 1356 /* 1357 * Send L2CA_Disconnect request 1358 */ 1359 1360 static int 1361 ng_btsocket_l2cap_send_l2ca_discon_req(u_int32_t token, 1362 ng_btsocket_l2cap_pcb_p pcb) 1363 { 1364 struct ng_mesg *msg = NULL; 1365 ng_l2cap_l2ca_discon_ip *ip = NULL; 1366 int error = 0; 1367 1368 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 1369 1370 if (pcb->rt == NULL || 1371 pcb->rt->hook == NULL || NG_HOOK_NOT_VALID(pcb->rt->hook)) 1372 return (ENETDOWN); 1373 1374 NG_MKMESSAGE(msg, NGM_L2CAP_COOKIE, NGM_L2CAP_L2CA_DISCON, 1375 sizeof(*ip), M_NOWAIT); 1376 if (msg == NULL) 1377 return (ENOMEM); 1378 1379 msg->header.token = token; 1380 1381 ip = (ng_l2cap_l2ca_discon_ip *)(msg->data); 1382 ip->lcid = pcb->cid; 1383 ip->idtype = pcb->idtype; 1384 1385 NG_SEND_MSG_HOOK(error, ng_btsocket_l2cap_node, msg,pcb->rt->hook, 0); 1386 1387 return (error); 1388 } /* ng_btsocket_l2cap_send_l2ca_discon_req */ 1389 1390 /***************************************************************************** 1391 ***************************************************************************** 1392 ** Socket interface 1393 ***************************************************************************** 1394 *****************************************************************************/ 1395 1396 /* 1397 * L2CAP sockets data input routine 1398 */ 1399 1400 static void 1401 ng_btsocket_l2cap_data_input(struct mbuf *m, hook_p hook) 1402 { 1403 ng_l2cap_hdr_t *hdr = NULL; 1404 ng_l2cap_clt_hdr_t *clt_hdr = NULL; 1405 ng_btsocket_l2cap_pcb_t *pcb = NULL; 1406 ng_btsocket_l2cap_rtentry_t *rt = NULL; 1407 uint16_t idtype; 1408 1409 if (hook == NULL) { 1410 NG_BTSOCKET_L2CAP_ALERT( 1411 "%s: Invalid source hook for L2CAP data packet\n", __func__); 1412 goto drop; 1413 } 1414 1415 rt = (ng_btsocket_l2cap_rtentry_t *) NG_HOOK_PRIVATE(hook); 1416 if (rt == NULL) { 1417 NG_BTSOCKET_L2CAP_ALERT( 1418 "%s: Could not find out source bdaddr for L2CAP data packet\n", __func__); 1419 goto drop; 1420 } 1421 1422 m = m_pullup(m, sizeof(uint16_t)); 1423 idtype = *mtod(m, uint16_t *); 1424 m_adj(m, sizeof(uint16_t)); 1425 1426 /* Make sure we can access header */ 1427 if (m->m_pkthdr.len < sizeof(*hdr)) { 1428 NG_BTSOCKET_L2CAP_ERR( 1429 "%s: L2CAP data packet too small, len=%d\n", __func__, m->m_pkthdr.len); 1430 goto drop; 1431 } 1432 1433 if (m->m_len < sizeof(*hdr)) { 1434 m = m_pullup(m, sizeof(*hdr)); 1435 if (m == NULL) 1436 goto drop; 1437 } 1438 1439 /* Strip L2CAP packet header and verify packet length */ 1440 hdr = mtod(m, ng_l2cap_hdr_t *); 1441 m_adj(m, sizeof(*hdr)); 1442 1443 if (hdr->length != m->m_pkthdr.len) { 1444 NG_BTSOCKET_L2CAP_ERR( 1445 "%s: Bad L2CAP data packet length, len=%d, length=%d\n", 1446 __func__, m->m_pkthdr.len, hdr->length); 1447 goto drop; 1448 } 1449 1450 /* 1451 * Now process packet. Two cases: 1452 * 1453 * 1) Normal packet (cid != 2) then find connected socket and append 1454 * mbuf to the socket queue. Wakeup socket. 1455 * 1456 * 2) Broadcast packet (cid == 2) then find all sockets that connected 1457 * to the given PSM and have SO_BROADCAST bit set and append mbuf 1458 * to the socket queue. Wakeup socket. 1459 */ 1460 1461 NG_BTSOCKET_L2CAP_INFO( 1462 "%s: Received L2CAP data packet: src bdaddr=%x:%x:%x:%x:%x:%x, " \ 1463 "dcid=%d, length=%d\n", 1464 __func__, 1465 rt->src.b[5], rt->src.b[4], rt->src.b[3], 1466 rt->src.b[2], rt->src.b[1], rt->src.b[0], 1467 hdr->dcid, hdr->length); 1468 1469 if ((hdr->dcid >= NG_L2CAP_FIRST_CID) || 1470 (idtype == NG_L2CAP_L2CA_IDTYPE_ATT)|| 1471 (idtype == NG_L2CAP_L2CA_IDTYPE_SMP) 1472 ){ 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 /* 1517 * This is really bad. Receive queue on socket does 1518 * not have enough space for the packet. We do not 1519 * have any other choice but drop the packet. L2CAP 1520 * does not provide any flow control. 1521 */ 1522 1523 NG_BTSOCKET_L2CAP_ERR( 1524 "%s: Not enough space in socket receive queue. Dropping L2CAP data packet, " \ 1525 "src bdaddr=%x:%x:%x:%x:%x:%x, dcid=%d, len=%d, space=%ld\n", 1526 __func__, 1527 rt->src.b[5], rt->src.b[4], rt->src.b[3], 1528 rt->src.b[2], rt->src.b[1], rt->src.b[0], 1529 hdr->dcid, m->m_pkthdr.len, 1530 sbspace(&pcb->so->so_rcv)); 1531 1532 mtx_unlock(&pcb->pcb_mtx); 1533 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1534 goto drop; 1535 } 1536 1537 /* Append packet to the socket receive queue and wakeup */ 1538 sbappendrecord(&pcb->so->so_rcv, m); 1539 m = NULL; 1540 1541 sorwakeup(pcb->so); 1542 1543 mtx_unlock(&pcb->pcb_mtx); 1544 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1545 } else if (hdr->dcid == NG_L2CAP_CLT_CID) { 1546 /* Broadcast packet: give packet to all sockets */ 1547 1548 /* Check packet size against connectionless MTU */ 1549 if (hdr->length > NG_L2CAP_MTU_DEFAULT) { 1550 NG_BTSOCKET_L2CAP_ERR( 1551 "%s: Connectionless L2CAP data packet too big, " \ 1552 "src bdaddr=%x:%x:%x:%x:%x:%x, length=%d\n", 1553 __func__, 1554 rt->src.b[5], rt->src.b[4], rt->src.b[3], 1555 rt->src.b[2], rt->src.b[1], rt->src.b[0], 1556 hdr->length); 1557 goto drop; 1558 } 1559 1560 /* Make sure we can access connectionless header */ 1561 if (m->m_pkthdr.len < sizeof(*clt_hdr)) { 1562 NG_BTSOCKET_L2CAP_ERR( 1563 "%s: Can not get L2CAP connectionless packet header, " \ 1564 "src bdaddr=%x:%x:%x:%x:%x:%x, length=%d\n", 1565 __func__, 1566 rt->src.b[5], rt->src.b[4], rt->src.b[3], 1567 rt->src.b[2], rt->src.b[1], rt->src.b[0], 1568 hdr->length); 1569 goto drop; 1570 } 1571 1572 if (m->m_len < sizeof(*clt_hdr)) { 1573 m = m_pullup(m, sizeof(*clt_hdr)); 1574 if (m == NULL) 1575 goto drop; 1576 } 1577 1578 /* Strip connectionless header and deliver packet */ 1579 clt_hdr = mtod(m, ng_l2cap_clt_hdr_t *); 1580 m_adj(m, sizeof(*clt_hdr)); 1581 1582 NG_BTSOCKET_L2CAP_INFO( 1583 "%s: Got L2CAP connectionless data packet, " \ 1584 "src bdaddr=%x:%x:%x:%x:%x:%x, psm=%d, length=%d\n", 1585 __func__, 1586 rt->src.b[5], rt->src.b[4], rt->src.b[3], 1587 rt->src.b[2], rt->src.b[1], rt->src.b[0], 1588 clt_hdr->psm, hdr->length); 1589 1590 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 1591 1592 LIST_FOREACH(pcb, &ng_btsocket_l2cap_sockets, next) { 1593 struct mbuf *copy = NULL; 1594 1595 mtx_lock(&pcb->pcb_mtx); 1596 1597 if (bcmp(&rt->src, &pcb->src, sizeof(pcb->src)) != 0 || 1598 pcb->psm != clt_hdr->psm || 1599 pcb->state != NG_BTSOCKET_L2CAP_OPEN || 1600 (pcb->so->so_options & SO_BROADCAST) == 0 || 1601 m->m_pkthdr.len > sbspace(&pcb->so->so_rcv)) 1602 goto next; 1603 1604 /* 1605 * Create a copy of the packet and append it to the 1606 * socket's queue. If m_dup() failed - no big deal 1607 * it is a broadcast traffic after all 1608 */ 1609 1610 copy = m_dup(m, M_NOWAIT); 1611 if (copy != NULL) { 1612 sbappendrecord(&pcb->so->so_rcv, copy); 1613 sorwakeup(pcb->so); 1614 } 1615 next: 1616 mtx_unlock(&pcb->pcb_mtx); 1617 } 1618 1619 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1620 } 1621 drop: 1622 NG_FREE_M(m); /* checks for m != NULL */ 1623 } /* ng_btsocket_l2cap_data_input */ 1624 1625 /* 1626 * L2CAP sockets default message input routine 1627 */ 1628 1629 static void 1630 ng_btsocket_l2cap_default_msg_input(struct ng_mesg *msg, hook_p hook) 1631 { 1632 switch (msg->header.cmd) { 1633 case NGM_L2CAP_NODE_HOOK_INFO: { 1634 ng_btsocket_l2cap_rtentry_t *rt = NULL; 1635 ng_l2cap_node_hook_info_ep *ep = 1636 (ng_l2cap_node_hook_info_ep *)msg->data; 1637 if (hook == NULL || msg->header.arglen != sizeof(*ep)) 1638 break; 1639 1640 if (bcmp(&ep->addr, NG_HCI_BDADDR_ANY, sizeof(bdaddr_t)) == 0) 1641 break; 1642 1643 mtx_lock(&ng_btsocket_l2cap_rt_mtx); 1644 1645 rt = (ng_btsocket_l2cap_rtentry_t *) NG_HOOK_PRIVATE(hook); 1646 if (rt == NULL) { 1647 rt = malloc(sizeof(*rt), 1648 M_NETGRAPH_BTSOCKET_L2CAP, M_NOWAIT|M_ZERO); 1649 if (rt == NULL) { 1650 mtx_unlock(&ng_btsocket_l2cap_rt_mtx); 1651 break; 1652 } 1653 1654 LIST_INSERT_HEAD(&ng_btsocket_l2cap_rt, rt, next); 1655 1656 NG_HOOK_SET_PRIVATE(hook, rt); 1657 } 1658 1659 bcopy(&ep->addr, &rt->src, sizeof(rt->src)); 1660 rt->hook = hook; 1661 1662 mtx_unlock(&ng_btsocket_l2cap_rt_mtx); 1663 1664 NG_BTSOCKET_L2CAP_INFO( 1665 "%s: Updating hook \"%s\", src bdaddr=%x:%x:%x:%x:%x:%x\n", 1666 __func__, NG_HOOK_NAME(hook), 1667 rt->src.b[5], rt->src.b[4], rt->src.b[3], 1668 rt->src.b[2], rt->src.b[1], rt->src.b[0]); 1669 } break; 1670 1671 default: 1672 NG_BTSOCKET_L2CAP_WARN( 1673 "%s: Unknown message, cmd=%d\n", __func__, msg->header.cmd); 1674 break; 1675 } 1676 1677 NG_FREE_MSG(msg); /* Checks for msg != NULL */ 1678 } /* ng_btsocket_l2cap_default_msg_input */ 1679 1680 /* 1681 * L2CAP sockets L2CA message input routine 1682 */ 1683 1684 static void 1685 ng_btsocket_l2cap_l2ca_msg_input(struct ng_mesg *msg, hook_p hook) 1686 { 1687 ng_btsocket_l2cap_rtentry_p rt = NULL; 1688 1689 if (hook == NULL) { 1690 NG_BTSOCKET_L2CAP_ALERT( 1691 "%s: Invalid source hook for L2CA message\n", __func__); 1692 goto drop; 1693 } 1694 1695 rt = (ng_btsocket_l2cap_rtentry_p) NG_HOOK_PRIVATE(hook); 1696 if (rt == NULL) { 1697 NG_BTSOCKET_L2CAP_ALERT( 1698 "%s: Could not find out source bdaddr for L2CA message\n", __func__); 1699 goto drop; 1700 } 1701 1702 switch (msg->header.cmd) { 1703 case NGM_L2CAP_L2CA_CON: /* L2CA_Connect response */ 1704 ng_btsocket_l2cap_process_l2ca_con_req_rsp(msg, rt); 1705 break; 1706 1707 case NGM_L2CAP_L2CA_CON_RSP: /* L2CA_ConnectRsp response */ 1708 ng_btsocket_l2cap_process_l2ca_con_rsp_rsp(msg, rt); 1709 break; 1710 1711 case NGM_L2CAP_L2CA_CON_IND: /* L2CA_Connect indicator */ 1712 ng_btsocket_l2cap_process_l2ca_con_ind(msg, rt); 1713 break; 1714 1715 case NGM_L2CAP_L2CA_CFG: /* L2CA_Config response */ 1716 ng_btsocket_l2cap_process_l2ca_cfg_req_rsp(msg, rt); 1717 break; 1718 1719 case NGM_L2CAP_L2CA_CFG_RSP: /* L2CA_ConfigRsp response */ 1720 ng_btsocket_l2cap_process_l2ca_cfg_rsp_rsp(msg, rt); 1721 break; 1722 1723 case NGM_L2CAP_L2CA_CFG_IND: /* L2CA_Config indicator */ 1724 ng_btsocket_l2cap_process_l2ca_cfg_ind(msg, rt); 1725 break; 1726 1727 case NGM_L2CAP_L2CA_DISCON: /* L2CA_Disconnect response */ 1728 ng_btsocket_l2cap_process_l2ca_discon_rsp(msg, rt); 1729 break; 1730 1731 case NGM_L2CAP_L2CA_DISCON_IND: /* L2CA_Disconnect indicator */ 1732 ng_btsocket_l2cap_process_l2ca_discon_ind(msg, rt); 1733 break; 1734 1735 case NGM_L2CAP_L2CA_WRITE: /* L2CA_Write response */ 1736 ng_btsocket_l2cap_process_l2ca_write_rsp(msg, rt); 1737 break; 1738 case NGM_L2CAP_L2CA_ENC_CHANGE: 1739 ng_btsocket_l2cap_process_l2ca_enc_change(msg, rt); 1740 1741 break; 1742 /* XXX FIXME add other L2CA messages */ 1743 1744 default: 1745 NG_BTSOCKET_L2CAP_WARN( 1746 "%s: Unknown L2CA message, cmd=%d\n", __func__, msg->header.cmd); 1747 break; 1748 } 1749 drop: 1750 NG_FREE_MSG(msg); 1751 } /* ng_btsocket_l2cap_l2ca_msg_input */ 1752 1753 /* 1754 * L2CAP sockets input routine 1755 */ 1756 1757 static void 1758 ng_btsocket_l2cap_input(void *context, int pending) 1759 { 1760 item_p item = NULL; 1761 hook_p hook = NULL; 1762 1763 for (;;) { 1764 mtx_lock(&ng_btsocket_l2cap_queue_mtx); 1765 NG_BT_ITEMQ_DEQUEUE(&ng_btsocket_l2cap_queue, item); 1766 mtx_unlock(&ng_btsocket_l2cap_queue_mtx); 1767 1768 if (item == NULL) 1769 break; 1770 1771 NGI_GET_HOOK(item, hook); 1772 if (hook != NULL && NG_HOOK_NOT_VALID(hook)) 1773 goto drop; 1774 1775 switch(item->el_flags & NGQF_TYPE) { 1776 case NGQF_DATA: { 1777 struct mbuf *m = NULL; 1778 1779 NGI_GET_M(item, m); 1780 ng_btsocket_l2cap_data_input(m, hook); 1781 } break; 1782 1783 case NGQF_MESG: { 1784 struct ng_mesg *msg = NULL; 1785 1786 NGI_GET_MSG(item, msg); 1787 1788 switch (msg->header.cmd) { 1789 case NGM_L2CAP_L2CA_CON: 1790 case NGM_L2CAP_L2CA_CON_RSP: 1791 case NGM_L2CAP_L2CA_CON_IND: 1792 case NGM_L2CAP_L2CA_CFG: 1793 case NGM_L2CAP_L2CA_CFG_RSP: 1794 case NGM_L2CAP_L2CA_CFG_IND: 1795 case NGM_L2CAP_L2CA_DISCON: 1796 case NGM_L2CAP_L2CA_DISCON_IND: 1797 case NGM_L2CAP_L2CA_WRITE: 1798 case NGM_L2CAP_L2CA_ENC_CHANGE: 1799 /* XXX FIXME add other L2CA messages */ 1800 ng_btsocket_l2cap_l2ca_msg_input(msg, hook); 1801 break; 1802 1803 default: 1804 ng_btsocket_l2cap_default_msg_input(msg, hook); 1805 break; 1806 } 1807 } break; 1808 1809 default: 1810 KASSERT(0, 1811 ("%s: invalid item type=%ld\n", __func__, (item->el_flags & NGQF_TYPE))); 1812 break; 1813 } 1814 drop: 1815 if (hook != NULL) 1816 NG_HOOK_UNREF(hook); 1817 1818 NG_FREE_ITEM(item); 1819 } 1820 } /* ng_btsocket_l2cap_input */ 1821 1822 /* 1823 * Route cleanup task. Gets scheduled when hook is disconnected. Here we 1824 * will find all sockets that use "invalid" hook and disconnect them. 1825 */ 1826 1827 static void 1828 ng_btsocket_l2cap_rtclean(void *context, int pending) 1829 { 1830 ng_btsocket_l2cap_pcb_p pcb = NULL, pcb_next = NULL; 1831 ng_btsocket_l2cap_rtentry_p rt = NULL; 1832 1833 mtx_lock(&ng_btsocket_l2cap_rt_mtx); 1834 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 1835 1836 /* 1837 * First disconnect all sockets that use "invalid" hook 1838 */ 1839 1840 for (pcb = LIST_FIRST(&ng_btsocket_l2cap_sockets); pcb != NULL; ) { 1841 mtx_lock(&pcb->pcb_mtx); 1842 pcb_next = LIST_NEXT(pcb, next); 1843 1844 if (pcb->rt != NULL && 1845 pcb->rt->hook != NULL && NG_HOOK_NOT_VALID(pcb->rt->hook)) { 1846 if (pcb->flags & NG_BTSOCKET_L2CAP_TIMO) 1847 ng_btsocket_l2cap_untimeout(pcb); 1848 1849 pcb->so->so_error = ENETDOWN; 1850 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 1851 soisdisconnected(pcb->so); 1852 1853 pcb->token = 0; 1854 pcb->cid = 0; 1855 pcb->rt = NULL; 1856 } 1857 1858 mtx_unlock(&pcb->pcb_mtx); 1859 pcb = pcb_next; 1860 } 1861 1862 /* 1863 * Now cleanup routing table 1864 */ 1865 1866 for (rt = LIST_FIRST(&ng_btsocket_l2cap_rt); rt != NULL; ) { 1867 ng_btsocket_l2cap_rtentry_p rt_next = LIST_NEXT(rt, next); 1868 1869 if (rt->hook != NULL && NG_HOOK_NOT_VALID(rt->hook)) { 1870 LIST_REMOVE(rt, next); 1871 1872 NG_HOOK_SET_PRIVATE(rt->hook, NULL); 1873 NG_HOOK_UNREF(rt->hook); /* Remove extra reference */ 1874 1875 bzero(rt, sizeof(*rt)); 1876 free(rt, M_NETGRAPH_BTSOCKET_L2CAP); 1877 } 1878 1879 rt = rt_next; 1880 } 1881 1882 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1883 mtx_unlock(&ng_btsocket_l2cap_rt_mtx); 1884 } /* ng_btsocket_l2cap_rtclean */ 1885 1886 /* 1887 * Initialize everything 1888 */ 1889 1890 void 1891 ng_btsocket_l2cap_init(void) 1892 { 1893 int error = 0; 1894 1895 /* Skip initialization of globals for non-default instances. */ 1896 if (!IS_DEFAULT_VNET(curvnet)) 1897 return; 1898 1899 ng_btsocket_l2cap_node = NULL; 1900 ng_btsocket_l2cap_debug_level = NG_BTSOCKET_WARN_LEVEL; 1901 1902 /* Register Netgraph node type */ 1903 error = ng_newtype(&typestruct); 1904 if (error != 0) { 1905 NG_BTSOCKET_L2CAP_ALERT( 1906 "%s: Could not register Netgraph node type, error=%d\n", __func__, error); 1907 1908 return; 1909 } 1910 1911 /* Create Netgrapg node */ 1912 error = ng_make_node_common(&typestruct, &ng_btsocket_l2cap_node); 1913 if (error != 0) { 1914 NG_BTSOCKET_L2CAP_ALERT( 1915 "%s: Could not create Netgraph node, error=%d\n", __func__, error); 1916 1917 ng_btsocket_l2cap_node = NULL; 1918 1919 return; 1920 } 1921 1922 error = ng_name_node(ng_btsocket_l2cap_node, 1923 NG_BTSOCKET_L2CAP_NODE_TYPE); 1924 if (error != 0) { 1925 NG_BTSOCKET_L2CAP_ALERT( 1926 "%s: Could not name Netgraph node, error=%d\n", __func__, error); 1927 1928 NG_NODE_UNREF(ng_btsocket_l2cap_node); 1929 ng_btsocket_l2cap_node = NULL; 1930 1931 return; 1932 } 1933 1934 /* Create input queue */ 1935 NG_BT_ITEMQ_INIT(&ng_btsocket_l2cap_queue, ifqmaxlen); 1936 mtx_init(&ng_btsocket_l2cap_queue_mtx, 1937 "btsocks_l2cap_queue_mtx", NULL, MTX_DEF); 1938 TASK_INIT(&ng_btsocket_l2cap_queue_task, 0, 1939 ng_btsocket_l2cap_input, NULL); 1940 1941 /* Create list of sockets */ 1942 LIST_INIT(&ng_btsocket_l2cap_sockets); 1943 mtx_init(&ng_btsocket_l2cap_sockets_mtx, 1944 "btsocks_l2cap_sockets_mtx", NULL, MTX_DEF); 1945 1946 /* Routing table */ 1947 LIST_INIT(&ng_btsocket_l2cap_rt); 1948 mtx_init(&ng_btsocket_l2cap_rt_mtx, 1949 "btsocks_l2cap_rt_mtx", NULL, MTX_DEF); 1950 TASK_INIT(&ng_btsocket_l2cap_rt_task, 0, 1951 ng_btsocket_l2cap_rtclean, NULL); 1952 } /* ng_btsocket_l2cap_init */ 1953 1954 /* 1955 * Abort connection on socket 1956 */ 1957 1958 void 1959 ng_btsocket_l2cap_abort(struct socket *so) 1960 { 1961 so->so_error = ECONNABORTED; 1962 1963 (void)ng_btsocket_l2cap_disconnect(so); 1964 } /* ng_btsocket_l2cap_abort */ 1965 1966 void 1967 ng_btsocket_l2cap_close(struct socket *so) 1968 { 1969 1970 (void)ng_btsocket_l2cap_disconnect(so); 1971 } /* ng_btsocket_l2cap_close */ 1972 1973 /* 1974 * Accept connection on socket. Nothing to do here, socket must be connected 1975 * and ready, so just return peer address and be done with it. 1976 */ 1977 1978 int 1979 ng_btsocket_l2cap_accept(struct socket *so, struct sockaddr **nam) 1980 { 1981 if (ng_btsocket_l2cap_node == NULL) 1982 return (EINVAL); 1983 1984 return (ng_btsocket_l2cap_peeraddr(so, nam)); 1985 } /* ng_btsocket_l2cap_accept */ 1986 1987 /* 1988 * Create and attach new socket 1989 */ 1990 1991 int 1992 ng_btsocket_l2cap_attach(struct socket *so, int proto, struct thread *td) 1993 { 1994 static u_int32_t token = 0; 1995 ng_btsocket_l2cap_pcb_p pcb = so2l2cap_pcb(so); 1996 int error; 1997 1998 /* Check socket and protocol */ 1999 if (ng_btsocket_l2cap_node == NULL) 2000 return (EPROTONOSUPPORT); 2001 if (so->so_type != SOCK_SEQPACKET) 2002 return (ESOCKTNOSUPPORT); 2003 2004 #if 0 /* XXX sonewconn() calls "pru_attach" with proto == 0 */ 2005 if (proto != 0) 2006 if (proto != BLUETOOTH_PROTO_L2CAP) 2007 return (EPROTONOSUPPORT); 2008 #endif /* XXX */ 2009 2010 if (pcb != NULL) 2011 return (EISCONN); 2012 2013 /* Reserve send and receive space if it is not reserved yet */ 2014 if ((so->so_snd.sb_hiwat == 0) || (so->so_rcv.sb_hiwat == 0)) { 2015 error = soreserve(so, NG_BTSOCKET_L2CAP_SENDSPACE, 2016 NG_BTSOCKET_L2CAP_RECVSPACE); 2017 if (error != 0) 2018 return (error); 2019 } 2020 2021 /* Allocate the PCB */ 2022 pcb = malloc(sizeof(*pcb), 2023 M_NETGRAPH_BTSOCKET_L2CAP, M_NOWAIT | M_ZERO); 2024 if (pcb == NULL) 2025 return (ENOMEM); 2026 2027 /* Link the PCB and the socket */ 2028 so->so_pcb = (caddr_t) pcb; 2029 pcb->so = so; 2030 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 2031 2032 /* Initialize PCB */ 2033 pcb->imtu = pcb->omtu = NG_L2CAP_MTU_DEFAULT; 2034 2035 /* Default flow */ 2036 pcb->iflow.flags = 0x0; 2037 pcb->iflow.service_type = NG_HCI_SERVICE_TYPE_BEST_EFFORT; 2038 pcb->iflow.token_rate = 0xffffffff; /* maximum */ 2039 pcb->iflow.token_bucket_size = 0xffffffff; /* maximum */ 2040 pcb->iflow.peak_bandwidth = 0x00000000; /* maximum */ 2041 pcb->iflow.latency = 0xffffffff; /* don't care */ 2042 pcb->iflow.delay_variation = 0xffffffff; /* don't care */ 2043 2044 bcopy(&pcb->iflow, &pcb->oflow, sizeof(pcb->oflow)); 2045 2046 pcb->flush_timo = NG_L2CAP_FLUSH_TIMO_DEFAULT; 2047 pcb->link_timo = NG_L2CAP_LINK_TIMO_DEFAULT; 2048 2049 /* 2050 * XXX Mark PCB mutex as DUPOK to prevent "duplicated lock of 2051 * the same type" message. When accepting new L2CAP connection 2052 * ng_btsocket_l2cap_process_l2ca_con_ind() holds both PCB mutexes 2053 * for "old" (accepting) PCB and "new" (created) PCB. 2054 */ 2055 2056 mtx_init(&pcb->pcb_mtx, "btsocks_l2cap_pcb_mtx", NULL, 2057 MTX_DEF|MTX_DUPOK); 2058 callout_init_mtx(&pcb->timo, &pcb->pcb_mtx, 0); 2059 2060 /* 2061 * Add the PCB to the list 2062 * 2063 * XXX FIXME VERY IMPORTANT! 2064 * 2065 * This is totally FUBAR. We could get here in two cases: 2066 * 2067 * 1) When user calls socket() 2068 * 2) When we need to accept new incomming connection and call 2069 * sonewconn() 2070 * 2071 * In the first case we must acquire ng_btsocket_l2cap_sockets_mtx. 2072 * In the second case we hold ng_btsocket_l2cap_sockets_mtx already. 2073 * So we now need to distinguish between these cases. From reading 2074 * /sys/kern/uipc_socket.c we can find out that sonewconn() calls 2075 * pru_attach with proto == 0 and td == NULL. For now use this fact 2076 * to figure out if we were called from socket() or from sonewconn(). 2077 */ 2078 2079 if (td != NULL) 2080 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 2081 else 2082 mtx_assert(&ng_btsocket_l2cap_sockets_mtx, MA_OWNED); 2083 2084 /* Set PCB token. Use ng_btsocket_l2cap_sockets_mtx for protection */ 2085 if (++ token == 0) 2086 token ++; 2087 2088 pcb->token = token; 2089 2090 LIST_INSERT_HEAD(&ng_btsocket_l2cap_sockets, pcb, next); 2091 2092 if (td != NULL) 2093 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 2094 2095 return (0); 2096 } /* ng_btsocket_l2cap_attach */ 2097 2098 /* 2099 * Bind socket 2100 */ 2101 2102 int 2103 ng_btsocket_l2cap_bind(struct socket *so, struct sockaddr *nam, 2104 struct thread *td) 2105 { 2106 ng_btsocket_l2cap_pcb_t *pcb = NULL; 2107 struct sockaddr_l2cap *sa = (struct sockaddr_l2cap *) nam; 2108 int psm, error = 0; 2109 2110 if (ng_btsocket_l2cap_node == NULL) 2111 return (EINVAL); 2112 2113 /* Verify address */ 2114 if (sa == NULL) 2115 return (EINVAL); 2116 if (sa->l2cap_family != AF_BLUETOOTH) 2117 return (EAFNOSUPPORT); 2118 /*For the time being, Not support LE binding.*/ 2119 if ((sa->l2cap_len != sizeof(*sa))&& 2120 (sa->l2cap_len != sizeof(struct sockaddr_l2cap_compat))) 2121 return (EINVAL); 2122 2123 psm = le16toh(sa->l2cap_psm); 2124 2125 /* 2126 * Check if other socket has this address already (look for exact 2127 * match PSM and bdaddr) and assign socket address if it's available. 2128 * 2129 * Note: socket can be bound to ANY PSM (zero) thus allowing several 2130 * channels with the same PSM between the same pair of BD_ADDR'es. 2131 */ 2132 2133 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 2134 2135 LIST_FOREACH(pcb, &ng_btsocket_l2cap_sockets, next) 2136 if (psm != 0 && psm == pcb->psm && 2137 bcmp(&pcb->src, &sa->l2cap_bdaddr, sizeof(bdaddr_t)) == 0) 2138 break; 2139 2140 if (pcb == NULL) { 2141 /* Set socket address */ 2142 pcb = so2l2cap_pcb(so); 2143 if (pcb != NULL) { 2144 bcopy(&sa->l2cap_bdaddr, &pcb->src, sizeof(pcb->src)); 2145 pcb->psm = psm; 2146 } else 2147 error = EINVAL; 2148 } else 2149 error = EADDRINUSE; 2150 2151 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 2152 2153 return (error); 2154 } /* ng_btsocket_l2cap_bind */ 2155 2156 /* 2157 * Connect socket 2158 */ 2159 2160 int 2161 ng_btsocket_l2cap_connect(struct socket *so, struct sockaddr *nam, 2162 struct thread *td) 2163 { 2164 ng_btsocket_l2cap_pcb_t *pcb = so2l2cap_pcb(so); 2165 struct sockaddr_l2cap_compat *sal = (struct sockaddr_l2cap_compat *) nam; 2166 struct sockaddr_l2cap *sa = (struct sockaddr_l2cap *)nam; 2167 struct sockaddr_l2cap ba; 2168 ng_btsocket_l2cap_rtentry_t *rt = NULL; 2169 int have_src, error = 0; 2170 int idtype = NG_L2CAP_L2CA_IDTYPE_BREDR; 2171 /* Check socket */ 2172 if (pcb == NULL) 2173 return (EINVAL); 2174 if (ng_btsocket_l2cap_node == NULL) 2175 return (EINVAL); 2176 if (pcb->state == NG_BTSOCKET_L2CAP_CONNECTING) 2177 return (EINPROGRESS); 2178 2179 /* Verify address */ 2180 if (sa == NULL) 2181 return (EINVAL); 2182 if (sa->l2cap_family != AF_BLUETOOTH) 2183 return (EAFNOSUPPORT); 2184 if (sa->l2cap_len == sizeof(*sal)){ 2185 bcopy(sal, &ba, sizeof(*sal)); 2186 sa = &ba; 2187 sa->l2cap_len = sizeof(*sa); 2188 sa->l2cap_bdaddr_type = BDADDR_BREDR; 2189 } 2190 if (sa->l2cap_len != sizeof(*sa)) 2191 return (EINVAL); 2192 if ((sa->l2cap_psm && sa->l2cap_cid)) 2193 return EINVAL; 2194 if (bcmp(&sa->l2cap_bdaddr, NG_HCI_BDADDR_ANY, sizeof(bdaddr_t)) == 0) 2195 return (EDESTADDRREQ); 2196 if((sa->l2cap_bdaddr_type == BDADDR_BREDR)&& 2197 (sa->l2cap_psm == 0)) 2198 return EDESTADDRREQ; 2199 if(sa->l2cap_bdaddr_type != BDADDR_BREDR){ 2200 if(sa->l2cap_cid == NG_L2CAP_ATT_CID){ 2201 idtype = NG_L2CAP_L2CA_IDTYPE_ATT; 2202 }else if (sa->l2cap_cid == NG_L2CAP_SMP_CID){ 2203 idtype =NG_L2CAP_L2CA_IDTYPE_SMP; 2204 }else{ 2205 //if cid == 0 idtype = NG_L2CAP_L2CA_IDTYPE_LE; 2206 // Not supported yet 2207 return EINVAL; 2208 } 2209 } 2210 if (pcb->psm != 0 && pcb->psm != le16toh(sa->l2cap_psm)) 2211 return (EINVAL); 2212 /* 2213 * Routing. Socket should be bound to some source address. The source 2214 * address can be ANY. Destination address must be set and it must not 2215 * be ANY. If source address is ANY then find first rtentry that has 2216 * src != dst. 2217 */ 2218 2219 mtx_lock(&ng_btsocket_l2cap_rt_mtx); 2220 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 2221 mtx_lock(&pcb->pcb_mtx); 2222 2223 /* Send destination address and PSM */ 2224 bcopy(&sa->l2cap_bdaddr, &pcb->dst, sizeof(pcb->dst)); 2225 pcb->psm = le16toh(sa->l2cap_psm); 2226 pcb->dsttype = sa->l2cap_bdaddr_type; 2227 pcb->cid = 0; 2228 pcb->idtype = idtype; 2229 pcb->rt = NULL; 2230 have_src = bcmp(&pcb->src, NG_HCI_BDADDR_ANY, sizeof(pcb->src)); 2231 2232 LIST_FOREACH(rt, &ng_btsocket_l2cap_rt, next) { 2233 if (rt->hook == NULL || NG_HOOK_NOT_VALID(rt->hook)) 2234 continue; 2235 2236 /* Match src and dst */ 2237 if (have_src) { 2238 if (bcmp(&pcb->src, &rt->src, sizeof(rt->src)) == 0) 2239 break; 2240 } else { 2241 if (bcmp(&pcb->dst, &rt->src, sizeof(rt->src)) != 0) 2242 break; 2243 } 2244 } 2245 2246 if (rt != NULL) { 2247 pcb->rt = rt; 2248 2249 if (!have_src){ 2250 bcopy(&rt->src, &pcb->src, sizeof(pcb->src)); 2251 pcb->srctype = 2252 (sa->l2cap_bdaddr_type == BDADDR_BREDR)? 2253 BDADDR_BREDR : BDADDR_LE_PUBLIC; 2254 } 2255 } else 2256 error = EHOSTUNREACH; 2257 2258 /* 2259 * Send L2CA_Connect request 2260 */ 2261 2262 if (error == 0) { 2263 error = ng_btsocket_l2cap_send_l2ca_con_req(pcb); 2264 if (error == 0) { 2265 pcb->flags |= NG_BTSOCKET_L2CAP_CLIENT; 2266 pcb->state = NG_BTSOCKET_L2CAP_CONNECTING; 2267 soisconnecting(pcb->so); 2268 2269 ng_btsocket_l2cap_timeout(pcb); 2270 } 2271 } 2272 2273 mtx_unlock(&pcb->pcb_mtx); 2274 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 2275 mtx_unlock(&ng_btsocket_l2cap_rt_mtx); 2276 2277 return (error); 2278 } /* ng_btsocket_l2cap_connect */ 2279 2280 /* 2281 * Process ioctl's calls on socket 2282 */ 2283 2284 int 2285 ng_btsocket_l2cap_control(struct socket *so, u_long cmd, caddr_t data, 2286 struct ifnet *ifp, struct thread *td) 2287 { 2288 return (EINVAL); 2289 } /* ng_btsocket_l2cap_control */ 2290 2291 /* 2292 * Process getsockopt/setsockopt system calls 2293 */ 2294 2295 int 2296 ng_btsocket_l2cap_ctloutput(struct socket *so, struct sockopt *sopt) 2297 { 2298 ng_btsocket_l2cap_pcb_p pcb = so2l2cap_pcb(so); 2299 int error = 0; 2300 ng_l2cap_cfg_opt_val_t v; 2301 2302 if (pcb == NULL) 2303 return (EINVAL); 2304 if (ng_btsocket_l2cap_node == NULL) 2305 return (EINVAL); 2306 2307 if (sopt->sopt_level != SOL_L2CAP) 2308 return (0); 2309 2310 mtx_lock(&pcb->pcb_mtx); 2311 2312 switch (sopt->sopt_dir) { 2313 case SOPT_GET: 2314 switch (sopt->sopt_name) { 2315 case SO_L2CAP_IMTU: /* get incoming MTU */ 2316 error = sooptcopyout(sopt, &pcb->imtu, 2317 sizeof(pcb->imtu)); 2318 break; 2319 2320 case SO_L2CAP_OMTU: /* get outgoing (peer incoming) MTU */ 2321 error = sooptcopyout(sopt, &pcb->omtu, 2322 sizeof(pcb->omtu)); 2323 break; 2324 2325 case SO_L2CAP_IFLOW: /* get incoming flow spec. */ 2326 error = sooptcopyout(sopt, &pcb->iflow, 2327 sizeof(pcb->iflow)); 2328 break; 2329 2330 case SO_L2CAP_OFLOW: /* get outgoing flow spec. */ 2331 error = sooptcopyout(sopt, &pcb->oflow, 2332 sizeof(pcb->oflow)); 2333 break; 2334 2335 case SO_L2CAP_FLUSH: /* get flush timeout */ 2336 error = sooptcopyout(sopt, &pcb->flush_timo, 2337 sizeof(pcb->flush_timo)); 2338 break; 2339 case SO_L2CAP_ENCRYPTED: /* get encrypt required */ 2340 error = sooptcopyout(sopt, &pcb->need_encrypt, 2341 sizeof(pcb->need_encrypt)); 2342 break; 2343 2344 2345 default: 2346 error = ENOPROTOOPT; 2347 break; 2348 } 2349 break; 2350 2351 case SOPT_SET: 2352 /* 2353 * XXX 2354 * We do not allow to change these parameters while socket is 2355 * connected or we are in the process of creating a connection. 2356 * May be this should indicate re-configuration of the open 2357 * channel? 2358 */ 2359 2360 if (pcb->state != NG_BTSOCKET_L2CAP_CLOSED) { 2361 error = EACCES; 2362 break; 2363 } 2364 2365 switch (sopt->sopt_name) { 2366 case SO_L2CAP_IMTU: /* set incoming MTU */ 2367 error = sooptcopyin(sopt, &v, sizeof(v), sizeof(v.mtu)); 2368 if (error == 0) 2369 pcb->imtu = v.mtu; 2370 break; 2371 2372 case SO_L2CAP_OFLOW: /* set outgoing flow spec. */ 2373 error = sooptcopyin(sopt, &v, sizeof(v),sizeof(v.flow)); 2374 if (error == 0) 2375 bcopy(&v.flow, &pcb->oflow, sizeof(pcb->oflow)); 2376 break; 2377 2378 case SO_L2CAP_FLUSH: /* set flush timeout */ 2379 error = sooptcopyin(sopt, &v, sizeof(v), 2380 sizeof(v.flush_timo)); 2381 if (error == 0) 2382 pcb->flush_timo = v.flush_timo; 2383 break; 2384 case SO_L2CAP_ENCRYPTED: /*set connect encryption opt*/ 2385 if((pcb->state != NG_BTSOCKET_L2CAP_OPEN) && 2386 (pcb->state != NG_BTSOCKET_L2CAP_W4_ENC_CHANGE)){ 2387 error = sooptcopyin(sopt, &v, sizeof(v), 2388 sizeof(v.encryption)); 2389 if(error == 0) 2390 pcb->need_encrypt = (v.encryption)?1:0; 2391 }else{ 2392 error = EINVAL; 2393 } 2394 break; 2395 default: 2396 error = ENOPROTOOPT; 2397 break; 2398 } 2399 break; 2400 2401 default: 2402 error = EINVAL; 2403 break; 2404 } 2405 2406 mtx_unlock(&pcb->pcb_mtx); 2407 2408 return (error); 2409 } /* ng_btsocket_l2cap_ctloutput */ 2410 2411 /* 2412 * Detach and destroy socket 2413 */ 2414 2415 void 2416 ng_btsocket_l2cap_detach(struct socket *so) 2417 { 2418 ng_btsocket_l2cap_pcb_p pcb = so2l2cap_pcb(so); 2419 2420 KASSERT(pcb != NULL, ("ng_btsocket_l2cap_detach: pcb == NULL")); 2421 2422 if (ng_btsocket_l2cap_node == NULL) 2423 return; 2424 2425 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 2426 mtx_lock(&pcb->pcb_mtx); 2427 2428 /* XXX what to do with pending request? */ 2429 if (pcb->flags & NG_BTSOCKET_L2CAP_TIMO) 2430 ng_btsocket_l2cap_untimeout(pcb); 2431 2432 if (pcb->state != NG_BTSOCKET_L2CAP_CLOSED && 2433 pcb->state != NG_BTSOCKET_L2CAP_DISCONNECTING) 2434 /* Send disconnect request with "zero" token */ 2435 ng_btsocket_l2cap_send_l2ca_discon_req(0, pcb); 2436 2437 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 2438 2439 LIST_REMOVE(pcb, next); 2440 2441 mtx_unlock(&pcb->pcb_mtx); 2442 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 2443 2444 mtx_destroy(&pcb->pcb_mtx); 2445 bzero(pcb, sizeof(*pcb)); 2446 free(pcb, M_NETGRAPH_BTSOCKET_L2CAP); 2447 2448 soisdisconnected(so); 2449 so->so_pcb = NULL; 2450 } /* ng_btsocket_l2cap_detach */ 2451 2452 /* 2453 * Disconnect socket 2454 */ 2455 2456 int 2457 ng_btsocket_l2cap_disconnect(struct socket *so) 2458 { 2459 ng_btsocket_l2cap_pcb_p pcb = so2l2cap_pcb(so); 2460 int error = 0; 2461 2462 if (pcb == NULL) 2463 return (EINVAL); 2464 if (ng_btsocket_l2cap_node == NULL) 2465 return (EINVAL); 2466 2467 mtx_lock(&pcb->pcb_mtx); 2468 2469 if (pcb->state == NG_BTSOCKET_L2CAP_DISCONNECTING) { 2470 mtx_unlock(&pcb->pcb_mtx); 2471 return (EINPROGRESS); 2472 } 2473 2474 if (pcb->state != NG_BTSOCKET_L2CAP_CLOSED) { 2475 /* XXX FIXME what to do with pending request? */ 2476 if (pcb->flags & NG_BTSOCKET_L2CAP_TIMO) 2477 ng_btsocket_l2cap_untimeout(pcb); 2478 2479 error = ng_btsocket_l2cap_send_l2ca_discon_req(pcb->token, pcb); 2480 if (error == 0) { 2481 pcb->state = NG_BTSOCKET_L2CAP_DISCONNECTING; 2482 soisdisconnecting(so); 2483 2484 ng_btsocket_l2cap_timeout(pcb); 2485 } 2486 2487 /* XXX FIXME what to do if error != 0 */ 2488 } 2489 2490 mtx_unlock(&pcb->pcb_mtx); 2491 2492 return (error); 2493 } /* ng_btsocket_l2cap_disconnect */ 2494 2495 /* 2496 * Listen on socket 2497 */ 2498 2499 int 2500 ng_btsocket_l2cap_listen(struct socket *so, int backlog, struct thread *td) 2501 { 2502 ng_btsocket_l2cap_pcb_p pcb = so2l2cap_pcb(so); 2503 int error; 2504 2505 SOCK_LOCK(so); 2506 error = solisten_proto_check(so); 2507 if (error != 0) 2508 goto out; 2509 if (pcb == NULL) { 2510 error = EINVAL; 2511 goto out; 2512 } 2513 if (ng_btsocket_l2cap_node == NULL) { 2514 error = EINVAL; 2515 goto out; 2516 } 2517 if (pcb->psm == 0) { 2518 error = EADDRNOTAVAIL; 2519 goto out; 2520 } 2521 solisten_proto(so, backlog); 2522 out: 2523 SOCK_UNLOCK(so); 2524 return (error); 2525 } /* ng_btsocket_listen */ 2526 2527 /* 2528 * Get peer address 2529 */ 2530 2531 int 2532 ng_btsocket_l2cap_peeraddr(struct socket *so, struct sockaddr **nam) 2533 { 2534 ng_btsocket_l2cap_pcb_p pcb = so2l2cap_pcb(so); 2535 struct sockaddr_l2cap sa; 2536 2537 if (pcb == NULL) 2538 return (EINVAL); 2539 if (ng_btsocket_l2cap_node == NULL) 2540 return (EINVAL); 2541 2542 bcopy(&pcb->dst, &sa.l2cap_bdaddr, sizeof(sa.l2cap_bdaddr)); 2543 sa.l2cap_psm = htole16(pcb->psm); 2544 sa.l2cap_len = sizeof(sa); 2545 sa.l2cap_family = AF_BLUETOOTH; 2546 switch(pcb->idtype){ 2547 case NG_L2CAP_L2CA_IDTYPE_ATT: 2548 sa.l2cap_cid = NG_L2CAP_ATT_CID; 2549 break; 2550 case NG_L2CAP_L2CA_IDTYPE_SMP: 2551 sa.l2cap_cid = NG_L2CAP_SMP_CID; 2552 break; 2553 default: 2554 sa.l2cap_cid = 0; 2555 break; 2556 } 2557 sa.l2cap_bdaddr_type = pcb->dsttype; 2558 *nam = sodupsockaddr((struct sockaddr *) &sa, M_NOWAIT); 2559 2560 return ((*nam == NULL)? ENOMEM : 0); 2561 } /* ng_btsocket_l2cap_peeraddr */ 2562 2563 /* 2564 * Send data to socket 2565 */ 2566 2567 int 2568 ng_btsocket_l2cap_send(struct socket *so, int flags, struct mbuf *m, 2569 struct sockaddr *nam, struct mbuf *control, struct thread *td) 2570 { 2571 ng_btsocket_l2cap_pcb_t *pcb = so2l2cap_pcb(so); 2572 int error = 0; 2573 2574 if (ng_btsocket_l2cap_node == NULL) { 2575 error = ENETDOWN; 2576 goto drop; 2577 } 2578 2579 /* Check socket and input */ 2580 if (pcb == NULL || m == NULL || control != NULL) { 2581 error = EINVAL; 2582 goto drop; 2583 } 2584 2585 mtx_lock(&pcb->pcb_mtx); 2586 2587 /* Make sure socket is connected */ 2588 if (pcb->state != NG_BTSOCKET_L2CAP_OPEN) { 2589 mtx_unlock(&pcb->pcb_mtx); 2590 error = ENOTCONN; 2591 goto drop; 2592 } 2593 2594 /* Check route */ 2595 if (pcb->rt == NULL || 2596 pcb->rt->hook == NULL || NG_HOOK_NOT_VALID(pcb->rt->hook)) { 2597 mtx_unlock(&pcb->pcb_mtx); 2598 error = ENETDOWN; 2599 goto drop; 2600 } 2601 2602 /* Check packet size agains outgoing (peer's incoming) MTU) */ 2603 if (m->m_pkthdr.len > pcb->omtu) { 2604 NG_BTSOCKET_L2CAP_ERR( 2605 "%s: Packet too big, len=%d, omtu=%d\n", __func__, m->m_pkthdr.len, pcb->omtu); 2606 2607 mtx_unlock(&pcb->pcb_mtx); 2608 error = EMSGSIZE; 2609 goto drop; 2610 } 2611 2612 /* 2613 * First put packet on socket send queue. Then check if we have 2614 * pending timeout. If we do not have timeout then we must send 2615 * packet and schedule timeout. Otherwise do nothing and wait for 2616 * L2CA_WRITE_RSP. 2617 */ 2618 2619 sbappendrecord(&pcb->so->so_snd, m); 2620 m = NULL; 2621 2622 if (!(pcb->flags & NG_BTSOCKET_L2CAP_TIMO)) { 2623 error = ng_btsocket_l2cap_send2(pcb); 2624 if (error == 0) 2625 ng_btsocket_l2cap_timeout(pcb); 2626 else 2627 sbdroprecord(&pcb->so->so_snd); /* XXX */ 2628 } 2629 2630 mtx_unlock(&pcb->pcb_mtx); 2631 drop: 2632 NG_FREE_M(m); /* checks for != NULL */ 2633 NG_FREE_M(control); 2634 2635 return (error); 2636 } /* ng_btsocket_l2cap_send */ 2637 2638 /* 2639 * Send first packet in the socket queue to the L2CAP layer 2640 */ 2641 2642 static int 2643 ng_btsocket_l2cap_send2(ng_btsocket_l2cap_pcb_p pcb) 2644 { 2645 struct mbuf *m = NULL; 2646 ng_l2cap_l2ca_hdr_t *hdr = NULL; 2647 int error = 0; 2648 2649 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 2650 2651 if (sbavail(&pcb->so->so_snd) == 0) 2652 return (EINVAL); /* XXX */ 2653 2654 m = m_dup(pcb->so->so_snd.sb_mb, M_NOWAIT); 2655 if (m == NULL) 2656 return (ENOBUFS); 2657 2658 /* Create L2CA packet header */ 2659 M_PREPEND(m, sizeof(*hdr), M_NOWAIT); 2660 if (m != NULL) 2661 if (m->m_len < sizeof(*hdr)) 2662 m = m_pullup(m, sizeof(*hdr)); 2663 2664 if (m == NULL) { 2665 NG_BTSOCKET_L2CAP_ERR( 2666 "%s: Failed to create L2CA packet header\n", __func__); 2667 2668 return (ENOBUFS); 2669 } 2670 2671 hdr = mtod(m, ng_l2cap_l2ca_hdr_t *); 2672 hdr->token = pcb->token; 2673 hdr->length = m->m_pkthdr.len - sizeof(*hdr); 2674 hdr->lcid = pcb->cid; 2675 hdr->idtype = pcb->idtype; 2676 NG_BTSOCKET_L2CAP_INFO( 2677 "%s: Sending packet: len=%d, length=%d, lcid=%d, token=%d, state=%d\n", 2678 __func__, m->m_pkthdr.len, hdr->length, hdr->lcid, 2679 hdr->token, pcb->state); 2680 2681 /* 2682 * If we got here than we have successfuly creates new L2CAP 2683 * data packet and now we can send it to the L2CAP layer 2684 */ 2685 2686 NG_SEND_DATA_ONLY(error, pcb->rt->hook, m); 2687 2688 return (error); 2689 } /* ng_btsocket_l2cap_send2 */ 2690 2691 /* 2692 * Get socket address 2693 */ 2694 2695 int 2696 ng_btsocket_l2cap_sockaddr(struct socket *so, struct sockaddr **nam) 2697 { 2698 ng_btsocket_l2cap_pcb_p pcb = so2l2cap_pcb(so); 2699 struct sockaddr_l2cap sa; 2700 2701 if (pcb == NULL) 2702 return (EINVAL); 2703 if (ng_btsocket_l2cap_node == NULL) 2704 return (EINVAL); 2705 2706 bcopy(&pcb->src, &sa.l2cap_bdaddr, sizeof(sa.l2cap_bdaddr)); 2707 sa.l2cap_psm = htole16(pcb->psm); 2708 sa.l2cap_len = sizeof(sa); 2709 sa.l2cap_family = AF_BLUETOOTH; 2710 sa.l2cap_cid = 0; 2711 sa.l2cap_bdaddr_type = pcb->srctype; 2712 2713 *nam = sodupsockaddr((struct sockaddr *) &sa, M_NOWAIT); 2714 2715 return ((*nam == NULL)? ENOMEM : 0); 2716 } /* ng_btsocket_l2cap_sockaddr */ 2717 2718 /***************************************************************************** 2719 ***************************************************************************** 2720 ** Misc. functions 2721 ***************************************************************************** 2722 *****************************************************************************/ 2723 2724 /* 2725 * Look for the socket that listens on given PSM and bdaddr. Returns exact or 2726 * close match (if any). Caller must hold ng_btsocket_l2cap_sockets_mtx. 2727 */ 2728 2729 static ng_btsocket_l2cap_pcb_p 2730 ng_btsocket_l2cap_pcb_by_addr(bdaddr_p bdaddr, int psm) 2731 { 2732 ng_btsocket_l2cap_pcb_p p = NULL, p1 = NULL; 2733 2734 mtx_assert(&ng_btsocket_l2cap_sockets_mtx, MA_OWNED); 2735 2736 LIST_FOREACH(p, &ng_btsocket_l2cap_sockets, next) { 2737 if (p->so == NULL || !(p->so->so_options & SO_ACCEPTCONN) || 2738 p->psm != psm) 2739 continue; 2740 2741 if (bcmp(&p->src, bdaddr, sizeof(p->src)) == 0) 2742 break; 2743 2744 if (bcmp(&p->src, NG_HCI_BDADDR_ANY, sizeof(p->src)) == 0) 2745 p1 = p; 2746 } 2747 2748 return ((p != NULL)? p : p1); 2749 } /* ng_btsocket_l2cap_pcb_by_addr */ 2750 2751 /* 2752 * Look for the socket that has given token. 2753 * Caller must hold ng_btsocket_l2cap_sockets_mtx. 2754 */ 2755 2756 static ng_btsocket_l2cap_pcb_p 2757 ng_btsocket_l2cap_pcb_by_token(u_int32_t token) 2758 { 2759 ng_btsocket_l2cap_pcb_p p = NULL; 2760 2761 if (token == 0) 2762 return (NULL); 2763 2764 mtx_assert(&ng_btsocket_l2cap_sockets_mtx, MA_OWNED); 2765 2766 LIST_FOREACH(p, &ng_btsocket_l2cap_sockets, next) 2767 if (p->token == token) 2768 break; 2769 2770 return (p); 2771 } /* ng_btsocket_l2cap_pcb_by_token */ 2772 2773 /* 2774 * Look for the socket that assigned to given source address and channel ID. 2775 * Caller must hold ng_btsocket_l2cap_sockets_mtx 2776 */ 2777 2778 static ng_btsocket_l2cap_pcb_p 2779 ng_btsocket_l2cap_pcb_by_cid(bdaddr_p src, int cid, int idtype) 2780 { 2781 ng_btsocket_l2cap_pcb_p p = NULL; 2782 2783 mtx_assert(&ng_btsocket_l2cap_sockets_mtx, MA_OWNED); 2784 2785 LIST_FOREACH(p, &ng_btsocket_l2cap_sockets, next){ 2786 if (p->cid == cid && 2787 bcmp(src, &p->src, sizeof(p->src)) == 0&& 2788 p->idtype == idtype) 2789 break; 2790 2791 } 2792 return (p); 2793 } /* ng_btsocket_l2cap_pcb_by_cid */ 2794 2795 /* 2796 * Set timeout on socket 2797 */ 2798 2799 static void 2800 ng_btsocket_l2cap_timeout(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 pcb->flags |= NG_BTSOCKET_L2CAP_TIMO; 2806 callout_reset(&pcb->timo, bluetooth_l2cap_ertx_timeout(), 2807 ng_btsocket_l2cap_process_timeout, pcb); 2808 } else 2809 KASSERT(0, 2810 ("%s: Duplicated socket timeout?!\n", __func__)); 2811 } /* ng_btsocket_l2cap_timeout */ 2812 2813 /* 2814 * Unset timeout on socket 2815 */ 2816 2817 static void 2818 ng_btsocket_l2cap_untimeout(ng_btsocket_l2cap_pcb_p pcb) 2819 { 2820 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 2821 2822 if (pcb->flags & NG_BTSOCKET_L2CAP_TIMO) { 2823 callout_stop(&pcb->timo); 2824 pcb->flags &= ~NG_BTSOCKET_L2CAP_TIMO; 2825 } else 2826 KASSERT(0, 2827 ("%s: No socket timeout?!\n", __func__)); 2828 } /* ng_btsocket_l2cap_untimeout */ 2829 2830 /* 2831 * Process timeout on socket 2832 */ 2833 2834 static void 2835 ng_btsocket_l2cap_process_timeout(void *xpcb) 2836 { 2837 ng_btsocket_l2cap_pcb_p pcb = (ng_btsocket_l2cap_pcb_p) xpcb; 2838 2839 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 2840 2841 pcb->flags &= ~NG_BTSOCKET_L2CAP_TIMO; 2842 pcb->so->so_error = ETIMEDOUT; 2843 2844 switch (pcb->state) { 2845 case NG_BTSOCKET_L2CAP_CONNECTING: 2846 case NG_BTSOCKET_L2CAP_CONFIGURING: 2847 /* Send disconnect request with "zero" token */ 2848 if (pcb->cid != 0) 2849 ng_btsocket_l2cap_send_l2ca_discon_req(0, pcb); 2850 2851 /* ... and close the socket */ 2852 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 2853 soisdisconnected(pcb->so); 2854 break; 2855 2856 case NG_BTSOCKET_L2CAP_OPEN: 2857 /* Send timeout - drop packet and wakeup sender */ 2858 sbdroprecord(&pcb->so->so_snd); 2859 sowwakeup(pcb->so); 2860 break; 2861 2862 case NG_BTSOCKET_L2CAP_DISCONNECTING: 2863 /* Disconnect timeout - disconnect the socket anyway */ 2864 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 2865 soisdisconnected(pcb->so); 2866 break; 2867 2868 default: 2869 NG_BTSOCKET_L2CAP_ERR( 2870 "%s: Invalid socket state=%d\n", __func__, pcb->state); 2871 break; 2872 } 2873 } /* ng_btsocket_l2cap_process_timeout */ 2874 2875 /* 2876 * Translate HCI/L2CAP error code into "errno" code 2877 * XXX Note: Some L2CAP and HCI error codes have the same value, but 2878 * different meaning 2879 */ 2880 2881 static int 2882 ng_btsocket_l2cap_result2errno(int result) 2883 { 2884 switch (result) { 2885 case 0x00: /* No error */ 2886 return (0); 2887 2888 case 0x01: /* Unknown HCI command */ 2889 return (ENODEV); 2890 2891 case 0x02: /* No connection */ 2892 return (ENOTCONN); 2893 2894 case 0x03: /* Hardware failure */ 2895 return (EIO); 2896 2897 case 0x04: /* Page timeout */ 2898 return (EHOSTDOWN); 2899 2900 case 0x05: /* Authentication failure */ 2901 case 0x06: /* Key missing */ 2902 case 0x18: /* Pairing not allowed */ 2903 case 0x21: /* Role change not allowed */ 2904 case 0x24: /* LMP PSU not allowed */ 2905 case 0x25: /* Encryption mode not acceptable */ 2906 case 0x26: /* Unit key used */ 2907 return (EACCES); 2908 2909 case 0x07: /* Memory full */ 2910 return (ENOMEM); 2911 2912 case 0x08: /* Connection timeout */ 2913 case 0x10: /* Host timeout */ 2914 case 0x22: /* LMP response timeout */ 2915 case 0xee: /* HCI timeout */ 2916 case 0xeeee: /* L2CAP timeout */ 2917 return (ETIMEDOUT); 2918 2919 case 0x09: /* Max number of connections */ 2920 case 0x0a: /* Max number of SCO connections to a unit */ 2921 return (EMLINK); 2922 2923 case 0x0b: /* ACL connection already exists */ 2924 return (EEXIST); 2925 2926 case 0x0c: /* Command disallowed */ 2927 return (EBUSY); 2928 2929 case 0x0d: /* Host rejected due to limited resources */ 2930 case 0x0e: /* Host rejected due to securiity reasons */ 2931 case 0x0f: /* Host rejected due to remote unit is a personal unit */ 2932 case 0x1b: /* SCO offset rejected */ 2933 case 0x1c: /* SCO interval rejected */ 2934 case 0x1d: /* SCO air mode rejected */ 2935 return (ECONNREFUSED); 2936 2937 case 0x11: /* Unsupported feature or parameter value */ 2938 case 0x19: /* Unknown LMP PDU */ 2939 case 0x1a: /* Unsupported remote feature */ 2940 case 0x20: /* Unsupported LMP parameter value */ 2941 case 0x27: /* QoS is not supported */ 2942 case 0x29: /* Paring with unit key not supported */ 2943 return (EOPNOTSUPP); 2944 2945 case 0x12: /* Invalid HCI command parameter */ 2946 case 0x1e: /* Invalid LMP parameters */ 2947 return (EINVAL); 2948 2949 case 0x13: /* Other end terminated connection: User ended connection */ 2950 case 0x14: /* Other end terminated connection: Low resources */ 2951 case 0x15: /* Other end terminated connection: About to power off */ 2952 return (ECONNRESET); 2953 2954 case 0x16: /* Connection terminated by local host */ 2955 return (ECONNABORTED); 2956 2957 #if 0 /* XXX not yet */ 2958 case 0x17: /* Repeated attempts */ 2959 case 0x1f: /* Unspecified error */ 2960 case 0x23: /* LMP error transaction collision */ 2961 case 0x28: /* Instant passed */ 2962 #endif 2963 } 2964 2965 return (ENOSYS); 2966 } /* ng_btsocket_l2cap_result2errno */ 2967 2968