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 * $FreeBSD$ 34 */ 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/bitstring.h> 39 #include <sys/domain.h> 40 #include <sys/endian.h> 41 #include <sys/errno.h> 42 #include <sys/filedesc.h> 43 #include <sys/ioccom.h> 44 #include <sys/kernel.h> 45 #include <sys/lock.h> 46 #include <sys/malloc.h> 47 #include <sys/mbuf.h> 48 #include <sys/mutex.h> 49 #include <sys/protosw.h> 50 #include <sys/queue.h> 51 #include <sys/socket.h> 52 #include <sys/socketvar.h> 53 #include <sys/sysctl.h> 54 #include <sys/taskqueue.h> 55 56 #include <net/vnet.h> 57 58 #include <netgraph/ng_message.h> 59 #include <netgraph/netgraph.h> 60 #include <netgraph/bluetooth/include/ng_bluetooth.h> 61 #include <netgraph/bluetooth/include/ng_hci.h> 62 #include <netgraph/bluetooth/include/ng_l2cap.h> 63 #include <netgraph/bluetooth/include/ng_btsocket.h> 64 #include <netgraph/bluetooth/include/ng_btsocket_l2cap.h> 65 66 /* MALLOC define */ 67 #ifdef NG_SEPARATE_MALLOC 68 static MALLOC_DEFINE(M_NETGRAPH_BTSOCKET_L2CAP, "netgraph_btsocks_l2cap", 69 "Netgraph Bluetooth L2CAP sockets"); 70 #else 71 #define M_NETGRAPH_BTSOCKET_L2CAP M_NETGRAPH 72 #endif /* NG_SEPARATE_MALLOC */ 73 74 /* Netgraph node methods */ 75 static ng_constructor_t ng_btsocket_l2cap_node_constructor; 76 static ng_rcvmsg_t ng_btsocket_l2cap_node_rcvmsg; 77 static ng_shutdown_t ng_btsocket_l2cap_node_shutdown; 78 static ng_newhook_t ng_btsocket_l2cap_node_newhook; 79 static ng_connect_t ng_btsocket_l2cap_node_connect; 80 static ng_rcvdata_t ng_btsocket_l2cap_node_rcvdata; 81 static ng_disconnect_t ng_btsocket_l2cap_node_disconnect; 82 83 static void ng_btsocket_l2cap_input (void *, int); 84 static void ng_btsocket_l2cap_rtclean (void *, int); 85 86 /* Netgraph type descriptor */ 87 static struct ng_type typestruct = { 88 .version = NG_ABI_VERSION, 89 .name = NG_BTSOCKET_L2CAP_NODE_TYPE, 90 .constructor = ng_btsocket_l2cap_node_constructor, 91 .rcvmsg = ng_btsocket_l2cap_node_rcvmsg, 92 .shutdown = ng_btsocket_l2cap_node_shutdown, 93 .newhook = ng_btsocket_l2cap_node_newhook, 94 .connect = ng_btsocket_l2cap_node_connect, 95 .rcvdata = ng_btsocket_l2cap_node_rcvdata, 96 .disconnect = ng_btsocket_l2cap_node_disconnect, 97 }; 98 99 /* Globals */ 100 extern int ifqmaxlen; 101 static u_int32_t ng_btsocket_l2cap_debug_level; 102 static node_p ng_btsocket_l2cap_node; 103 static struct ng_bt_itemq ng_btsocket_l2cap_queue; 104 static struct mtx ng_btsocket_l2cap_queue_mtx; 105 static struct task ng_btsocket_l2cap_queue_task; 106 static LIST_HEAD(, ng_btsocket_l2cap_pcb) ng_btsocket_l2cap_sockets; 107 static struct mtx ng_btsocket_l2cap_sockets_mtx; 108 static LIST_HEAD(, ng_btsocket_l2cap_rtentry) ng_btsocket_l2cap_rt; 109 static struct mtx ng_btsocket_l2cap_rt_mtx; 110 static struct task ng_btsocket_l2cap_rt_task; 111 static struct timeval ng_btsocket_l2cap_lasttime; 112 static int ng_btsocket_l2cap_curpps; 113 114 /* Sysctl tree */ 115 SYSCTL_DECL(_net_bluetooth_l2cap_sockets); 116 static SYSCTL_NODE(_net_bluetooth_l2cap_sockets, OID_AUTO, seq, 117 CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 118 "Bluetooth SEQPACKET L2CAP sockets family"); 119 SYSCTL_UINT(_net_bluetooth_l2cap_sockets_seq, OID_AUTO, debug_level, 120 CTLFLAG_RW, 121 &ng_btsocket_l2cap_debug_level, NG_BTSOCKET_WARN_LEVEL, 122 "Bluetooth SEQPACKET L2CAP sockets debug level"); 123 SYSCTL_UINT(_net_bluetooth_l2cap_sockets_seq, OID_AUTO, queue_len, 124 CTLFLAG_RD, 125 &ng_btsocket_l2cap_queue.len, 0, 126 "Bluetooth SEQPACKET L2CAP sockets input queue length"); 127 SYSCTL_UINT(_net_bluetooth_l2cap_sockets_seq, OID_AUTO, queue_maxlen, 128 CTLFLAG_RD, 129 &ng_btsocket_l2cap_queue.maxlen, 0, 130 "Bluetooth SEQPACKET L2CAP sockets input queue max. length"); 131 SYSCTL_UINT(_net_bluetooth_l2cap_sockets_seq, OID_AUTO, queue_drops, 132 CTLFLAG_RD, 133 &ng_btsocket_l2cap_queue.drops, 0, 134 "Bluetooth SEQPACKET L2CAP sockets input queue drops"); 135 136 /* Debug */ 137 #define NG_BTSOCKET_L2CAP_INFO \ 138 if (ng_btsocket_l2cap_debug_level >= NG_BTSOCKET_INFO_LEVEL && \ 139 ppsratecheck(&ng_btsocket_l2cap_lasttime, &ng_btsocket_l2cap_curpps, 1)) \ 140 printf 141 142 #define NG_BTSOCKET_L2CAP_WARN \ 143 if (ng_btsocket_l2cap_debug_level >= NG_BTSOCKET_WARN_LEVEL && \ 144 ppsratecheck(&ng_btsocket_l2cap_lasttime, &ng_btsocket_l2cap_curpps, 1)) \ 145 printf 146 147 #define NG_BTSOCKET_L2CAP_ERR \ 148 if (ng_btsocket_l2cap_debug_level >= NG_BTSOCKET_ERR_LEVEL && \ 149 ppsratecheck(&ng_btsocket_l2cap_lasttime, &ng_btsocket_l2cap_curpps, 1)) \ 150 printf 151 152 #define NG_BTSOCKET_L2CAP_ALERT \ 153 if (ng_btsocket_l2cap_debug_level >= NG_BTSOCKET_ALERT_LEVEL && \ 154 ppsratecheck(&ng_btsocket_l2cap_lasttime, &ng_btsocket_l2cap_curpps, 1)) \ 155 printf 156 157 /* 158 * Netgraph message processing routines 159 */ 160 161 static int ng_btsocket_l2cap_process_l2ca_con_req_rsp 162 (struct ng_mesg *, ng_btsocket_l2cap_rtentry_p); 163 static int ng_btsocket_l2cap_process_l2ca_con_rsp_rsp 164 (struct ng_mesg *, ng_btsocket_l2cap_rtentry_p); 165 static int ng_btsocket_l2cap_process_l2ca_con_ind 166 (struct ng_mesg *, ng_btsocket_l2cap_rtentry_p); 167 168 static int ng_btsocket_l2cap_process_l2ca_cfg_req_rsp 169 (struct ng_mesg *, ng_btsocket_l2cap_rtentry_p); 170 static int ng_btsocket_l2cap_process_l2ca_cfg_rsp_rsp 171 (struct ng_mesg *, ng_btsocket_l2cap_rtentry_p); 172 static int ng_btsocket_l2cap_process_l2ca_cfg_ind 173 (struct ng_mesg *, ng_btsocket_l2cap_rtentry_p); 174 175 static int ng_btsocket_l2cap_process_l2ca_discon_rsp 176 (struct ng_mesg *, ng_btsocket_l2cap_rtentry_p); 177 static int ng_btsocket_l2cap_process_l2ca_discon_ind 178 (struct ng_mesg *, ng_btsocket_l2cap_rtentry_p); 179 180 static int ng_btsocket_l2cap_process_l2ca_write_rsp 181 (struct ng_mesg *, ng_btsocket_l2cap_rtentry_p); 182 183 /* 184 * Send L2CA_xxx messages to the lower layer 185 */ 186 187 static int ng_btsocket_l2cap_send_l2ca_con_req 188 (ng_btsocket_l2cap_pcb_p); 189 static int ng_btsocket_l2cap_send_l2ca_con_rsp_req 190 (u_int32_t, ng_btsocket_l2cap_rtentry_p, bdaddr_p, int, int, int, int); 191 static int ng_btsocket_l2cap_send_l2ca_cfg_req 192 (ng_btsocket_l2cap_pcb_p); 193 static int ng_btsocket_l2cap_send_l2ca_cfg_rsp 194 (ng_btsocket_l2cap_pcb_p); 195 static int ng_btsocket_l2cap_send_l2ca_discon_req 196 (u_int32_t, ng_btsocket_l2cap_pcb_p); 197 198 static int ng_btsocket_l2cap_send2 199 (ng_btsocket_l2cap_pcb_p); 200 201 /* 202 * Timeout processing routines 203 */ 204 205 static void ng_btsocket_l2cap_timeout (ng_btsocket_l2cap_pcb_p); 206 static void ng_btsocket_l2cap_untimeout (ng_btsocket_l2cap_pcb_p); 207 static void ng_btsocket_l2cap_process_timeout (void *); 208 209 /* 210 * Other stuff 211 */ 212 213 static ng_btsocket_l2cap_pcb_p ng_btsocket_l2cap_pcb_by_addr(bdaddr_p, int); 214 static ng_btsocket_l2cap_pcb_p ng_btsocket_l2cap_pcb_by_token(u_int32_t); 215 static ng_btsocket_l2cap_pcb_p ng_btsocket_l2cap_pcb_by_cid (bdaddr_p, int,int); 216 static int ng_btsocket_l2cap_result2errno(int); 217 218 static int ng_btsock_l2cap_addrtype_to_linktype(int addrtype); 219 220 #define ng_btsocket_l2cap_wakeup_input_task() \ 221 taskqueue_enqueue(taskqueue_swi_giant, &ng_btsocket_l2cap_queue_task) 222 223 #define ng_btsocket_l2cap_wakeup_route_task() \ 224 taskqueue_enqueue(taskqueue_swi_giant, &ng_btsocket_l2cap_rt_task) 225 226 int ng_btsock_l2cap_addrtype_to_linktype(int addrtype) 227 { 228 switch(addrtype){ 229 case BDADDR_LE_PUBLIC: 230 return NG_HCI_LINK_LE_PUBLIC; 231 case BDADDR_LE_RANDOM: 232 return NG_HCI_LINK_LE_RANDOM; 233 default: 234 return NG_HCI_LINK_ACL; 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 ng_btsocket_l2cap_timeout(pcb); 471 pcb->state = NG_BTSOCKET_L2CAP_W4_ENC_CHANGE; 472 }else{ 473 pcb->state = NG_BTSOCKET_L2CAP_OPEN; 474 soisconnected(pcb->so); 475 } 476 }else{ 477 /* 478 * Channel is now open, so update local channel ID and 479 * start configuration process. Source and destination 480 * addresses as well as route must be already set. 481 */ 482 483 pcb->cid = op->lcid; 484 pcb->encryption = op->encryption; 485 error = ng_btsocket_l2cap_send_l2ca_cfg_req(pcb); 486 if (error != 0) { 487 /* Send disconnect request with "zero" token */ 488 ng_btsocket_l2cap_send_l2ca_discon_req(0, pcb); 489 490 /* ... and close the socket */ 491 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 492 soisdisconnected(pcb->so); 493 } else { 494 pcb->cfg_state = NG_BTSOCKET_L2CAP_CFG_IN_SENT; 495 pcb->state = NG_BTSOCKET_L2CAP_CONFIGURING; 496 497 ng_btsocket_l2cap_timeout(pcb); 498 } 499 } 500 } else { 501 /* 502 * We have failed to open connection, so convert result 503 * code to "errno" code and disconnect the socket. Channel 504 * already has been closed. 505 */ 506 507 pcb->so->so_error = ng_btsocket_l2cap_result2errno(op->result); 508 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 509 soisdisconnected(pcb->so); 510 } 511 mtx_unlock(&pcb->pcb_mtx); 512 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 513 514 return (error); 515 } /* ng_btsocket_l2cap_process_l2ca_con_req_rsp */ 516 517 /* 518 * Process L2CA_ConnectRsp response 519 */ 520 521 static int 522 ng_btsocket_l2cap_process_l2ca_con_rsp_rsp(struct ng_mesg *msg, 523 ng_btsocket_l2cap_rtentry_p rt) 524 { 525 ng_l2cap_l2ca_con_rsp_op *op = NULL; 526 ng_btsocket_l2cap_pcb_t *pcb = NULL; 527 528 if (msg->header.arglen != sizeof(*op)) 529 return (EMSGSIZE); 530 531 op = (ng_l2cap_l2ca_con_rsp_op *)(msg->data); 532 533 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 534 535 /* Look for the socket with the token */ 536 pcb = ng_btsocket_l2cap_pcb_by_token(msg->header.token); 537 if (pcb == NULL) { 538 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 539 return (ENOENT); 540 } 541 542 mtx_lock(&pcb->pcb_mtx); 543 544 NG_BTSOCKET_L2CAP_INFO( 545 "%s: Got L2CA_ConnectRsp response, token=%d, src bdaddr=%x:%x:%x:%x:%x:%x, " \ 546 "dst bdaddr=%x:%x:%x:%x:%x:%x, psm=%d, lcid=%d, result=%d, state=%d\n", 547 __func__, msg->header.token, 548 pcb->src.b[5], pcb->src.b[4], pcb->src.b[3], 549 pcb->src.b[2], pcb->src.b[1], pcb->src.b[0], 550 pcb->dst.b[5], pcb->dst.b[4], pcb->dst.b[3], 551 pcb->dst.b[2], pcb->dst.b[1], pcb->dst.b[0], 552 pcb->psm, pcb->cid, op->result, pcb->state); 553 554 if (pcb->state != NG_BTSOCKET_L2CAP_CONNECTING) { 555 mtx_unlock(&pcb->pcb_mtx); 556 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 557 558 return (ENOENT); 559 } 560 561 ng_btsocket_l2cap_untimeout(pcb); 562 563 /* Check the result and disconnect the socket on failure */ 564 if (op->result != NG_L2CAP_SUCCESS) { 565 /* Close the socket - channel already closed */ 566 pcb->so->so_error = ng_btsocket_l2cap_result2errno(op->result); 567 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 568 soisdisconnected(pcb->so); 569 } else { 570 /* Move to CONFIGURING state and wait for CONFIG_IND */ 571 pcb->cfg_state = 0; 572 pcb->state = NG_BTSOCKET_L2CAP_CONFIGURING; 573 ng_btsocket_l2cap_timeout(pcb); 574 } 575 576 mtx_unlock(&pcb->pcb_mtx); 577 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 578 579 return (0); 580 } /* ng_btsocket_process_l2ca_con_rsp_rsp */ 581 582 /* 583 * Process L2CA_Connect indicator. Find socket that listens on address 584 * and PSM. Find exact or closest match. Create new socket and initiate 585 * connection. 586 */ 587 588 static int 589 ng_btsocket_l2cap_process_l2ca_con_ind(struct ng_mesg *msg, 590 ng_btsocket_l2cap_rtentry_p rt) 591 { 592 ng_l2cap_l2ca_con_ind_ip *ip = NULL; 593 ng_btsocket_l2cap_pcb_t *pcb = NULL, *pcb1 = NULL; 594 int error = 0; 595 u_int32_t token = 0; 596 u_int16_t result = 0; 597 598 if (msg->header.arglen != sizeof(*ip)) 599 return (EMSGSIZE); 600 601 ip = (ng_l2cap_l2ca_con_ind_ip *)(msg->data); 602 603 NG_BTSOCKET_L2CAP_INFO( 604 "%s: Got L2CA_Connect indicator, src bdaddr=%x:%x:%x:%x:%x:%x, " \ 605 "dst bdaddr=%x:%x:%x:%x:%x:%x, psm=%d, lcid=%d, ident=%d\n", 606 __func__, 607 rt->src.b[5], rt->src.b[4], rt->src.b[3], 608 rt->src.b[2], rt->src.b[1], rt->src.b[0], 609 ip->bdaddr.b[5], ip->bdaddr.b[4], ip->bdaddr.b[3], 610 ip->bdaddr.b[2], ip->bdaddr.b[1], ip->bdaddr.b[0], 611 ip->psm, ip->lcid, ip->ident); 612 613 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 614 615 pcb = ng_btsocket_l2cap_pcb_by_addr(&rt->src, ip->psm); 616 if (pcb != NULL) { 617 struct socket *so1; 618 619 mtx_lock(&pcb->pcb_mtx); 620 621 CURVNET_SET(pcb->so->so_vnet); 622 so1 = sonewconn(pcb->so, 0); 623 CURVNET_RESTORE(); 624 if (so1 == NULL) { 625 result = NG_L2CAP_NO_RESOURCES; 626 goto respond; 627 } 628 629 /* 630 * If we got here than we have created new socket. So complete 631 * connection. If we we listening on specific address then copy 632 * source address from listening socket, otherwise copy source 633 * address from hook's routing information. 634 */ 635 636 pcb1 = so2l2cap_pcb(so1); 637 KASSERT((pcb1 != NULL), 638 ("%s: pcb1 == NULL\n", __func__)); 639 640 mtx_lock(&pcb1->pcb_mtx); 641 642 if (bcmp(&pcb->src, NG_HCI_BDADDR_ANY, sizeof(pcb->src)) != 0) 643 bcopy(&pcb->src, &pcb1->src, sizeof(pcb1->src)); 644 else 645 bcopy(&rt->src, &pcb1->src, sizeof(pcb1->src)); 646 647 pcb1->flags &= ~NG_BTSOCKET_L2CAP_CLIENT; 648 649 bcopy(&ip->bdaddr, &pcb1->dst, sizeof(pcb1->dst)); 650 pcb1->psm = ip->psm; 651 pcb1->cid = ip->lcid; 652 pcb1->rt = rt; 653 654 /* Copy socket settings */ 655 pcb1->imtu = pcb->imtu; 656 bcopy(&pcb->oflow, &pcb1->oflow, sizeof(pcb1->oflow)); 657 pcb1->flush_timo = pcb->flush_timo; 658 659 token = pcb1->token; 660 } else 661 /* Nobody listens on requested BDADDR/PSM */ 662 result = NG_L2CAP_PSM_NOT_SUPPORTED; 663 664 respond: 665 error = ng_btsocket_l2cap_send_l2ca_con_rsp_req(token, rt, 666 &ip->bdaddr, 667 ip->ident, ip->lcid, 668 result,ip->linktype); 669 if (pcb1 != NULL) { 670 if (error != 0) { 671 pcb1->so->so_error = error; 672 pcb1->state = NG_BTSOCKET_L2CAP_CLOSED; 673 soisdisconnected(pcb1->so); 674 } else { 675 pcb1->state = NG_BTSOCKET_L2CAP_CONNECTING; 676 soisconnecting(pcb1->so); 677 678 ng_btsocket_l2cap_timeout(pcb1); 679 } 680 681 mtx_unlock(&pcb1->pcb_mtx); 682 } 683 684 if (pcb != NULL) 685 mtx_unlock(&pcb->pcb_mtx); 686 687 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 688 689 return (error); 690 } /* ng_btsocket_l2cap_process_l2ca_con_ind */ 691 /*Encryption Change*/ 692 static int ng_btsocket_l2cap_process_l2ca_enc_change(struct ng_mesg *msg, ng_btsocket_l2cap_rtentry_p rt) 693 { 694 ng_l2cap_l2ca_enc_chg_op *op = NULL; 695 ng_btsocket_l2cap_pcb_t *pcb = NULL; 696 697 if (msg->header.arglen != sizeof(*op)) 698 return (EMSGSIZE); 699 700 op = (ng_l2cap_l2ca_enc_chg_op *)(msg->data); 701 702 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 703 704 pcb = ng_btsocket_l2cap_pcb_by_cid(&rt->src, op->lcid, 705 op->idtype); 706 if (pcb == NULL) { 707 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 708 return (ENOENT); 709 } 710 711 mtx_lock(&pcb->pcb_mtx); 712 pcb->encryption = op->result; 713 714 if(pcb->need_encrypt){ 715 ng_btsocket_l2cap_untimeout(pcb); 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 ng_btsocket_l2cap_send_l2ca_discon_req(0, pcb); 725 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 726 soisdisconnected(pcb->so); 727 } 728 } 729 mtx_unlock(&pcb->pcb_mtx); 730 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 731 732 return 0; 733 } 734 /* 735 * Process L2CA_Config response 736 */ 737 738 static int 739 ng_btsocket_l2cap_process_l2ca_cfg_req_rsp(struct ng_mesg *msg, 740 ng_btsocket_l2cap_rtentry_p rt) 741 { 742 ng_l2cap_l2ca_cfg_op *op = NULL; 743 ng_btsocket_l2cap_pcb_p pcb = NULL; 744 745 if (msg->header.arglen != sizeof(*op)) 746 return (EMSGSIZE); 747 748 op = (ng_l2cap_l2ca_cfg_op *)(msg->data); 749 750 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 751 752 /* 753 * Socket must have issued a Configure request, so we must have a 754 * socket that wants to be configured. Use Netgraph message token 755 * to find it 756 */ 757 758 pcb = ng_btsocket_l2cap_pcb_by_token(msg->header.token); 759 if (pcb == NULL) { 760 /* 761 * XXX FIXME what to do here? We could not find a 762 * socket with requested token. We even can not send 763 * Disconnect, because we do not know channel ID 764 */ 765 766 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 767 return (ENOENT); 768 } 769 770 mtx_lock(&pcb->pcb_mtx); 771 772 NG_BTSOCKET_L2CAP_INFO( 773 "%s: Got L2CA_Config response, token=%d, src bdaddr=%x:%x:%x:%x:%x:%x, " \ 774 "dst bdaddr=%x:%x:%x:%x:%x:%x, psm=%d, lcid=%d, result=%d, state=%d, " \ 775 "cfg_state=%x\n", 776 __func__, msg->header.token, 777 pcb->src.b[5], pcb->src.b[4], pcb->src.b[3], 778 pcb->src.b[2], pcb->src.b[1], pcb->src.b[0], 779 pcb->dst.b[5], pcb->dst.b[4], pcb->dst.b[3], 780 pcb->dst.b[2], pcb->dst.b[1], pcb->dst.b[0], 781 pcb->psm, pcb->cid, op->result, pcb->state, pcb->cfg_state); 782 783 if (pcb->state != NG_BTSOCKET_L2CAP_CONFIGURING) { 784 mtx_unlock(&pcb->pcb_mtx); 785 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 786 787 return (ENOENT); 788 } 789 790 if (op->result == NG_L2CAP_SUCCESS) { 791 /* 792 * XXX FIXME Actually set flush and link timeout. 793 * Set QoS here if required. Resolve conficts (flush_timo). 794 * Save incoming MTU (peer's outgoing MTU) and outgoing flow 795 * spec. 796 */ 797 798 pcb->imtu = op->imtu; 799 bcopy(&op->oflow, &pcb->oflow, sizeof(pcb->oflow)); 800 pcb->flush_timo = op->flush_timo; 801 802 /* 803 * We have configured incoming side, so record it and check 804 * if configuration is complete. If complete then mark socket 805 * as connected, otherwise wait for the peer. 806 */ 807 808 pcb->cfg_state &= ~NG_BTSOCKET_L2CAP_CFG_IN_SENT; 809 pcb->cfg_state |= NG_BTSOCKET_L2CAP_CFG_IN; 810 811 if (pcb->cfg_state == NG_BTSOCKET_L2CAP_CFG_BOTH) { 812 /* Configuration complete - mark socket as open */ 813 ng_btsocket_l2cap_untimeout(pcb); 814 pcb->state = NG_BTSOCKET_L2CAP_OPEN; 815 soisconnected(pcb->so); 816 } 817 } else { 818 /* 819 * Something went wrong. Could be unacceptable parameters, 820 * reject or unknown option. That's too bad, but we will 821 * not negotiate. Send Disconnect and close the channel. 822 */ 823 824 ng_btsocket_l2cap_untimeout(pcb); 825 826 switch (op->result) { 827 case NG_L2CAP_UNACCEPTABLE_PARAMS: 828 case NG_L2CAP_UNKNOWN_OPTION: 829 pcb->so->so_error = EINVAL; 830 break; 831 832 default: 833 pcb->so->so_error = ECONNRESET; 834 break; 835 } 836 837 /* Send disconnect with "zero" token */ 838 ng_btsocket_l2cap_send_l2ca_discon_req(0, pcb); 839 840 /* ... and close the socket */ 841 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 842 soisdisconnected(pcb->so); 843 } 844 845 mtx_unlock(&pcb->pcb_mtx); 846 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 847 848 return (0); 849 } /* ng_btsocket_l2cap_process_l2ca_cfg_req_rsp */ 850 851 /* 852 * Process L2CA_ConfigRsp response 853 */ 854 855 static int 856 ng_btsocket_l2cap_process_l2ca_cfg_rsp_rsp(struct ng_mesg *msg, 857 ng_btsocket_l2cap_rtentry_p rt) 858 { 859 ng_l2cap_l2ca_cfg_rsp_op *op = NULL; 860 ng_btsocket_l2cap_pcb_t *pcb = NULL; 861 int error = 0; 862 863 if (msg->header.arglen != sizeof(*op)) 864 return (EMSGSIZE); 865 866 op = (ng_l2cap_l2ca_cfg_rsp_op *)(msg->data); 867 868 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 869 870 /* Look for the socket with the token */ 871 pcb = ng_btsocket_l2cap_pcb_by_token(msg->header.token); 872 if (pcb == NULL) { 873 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 874 return (ENOENT); 875 } 876 877 mtx_lock(&pcb->pcb_mtx); 878 879 NG_BTSOCKET_L2CAP_INFO( 880 "%s: Got L2CA_ConfigRsp response, token=%d, src bdaddr=%x:%x:%x:%x:%x:%x, " \ 881 "dst bdaddr=%x:%x:%x:%x:%x:%x, psm=%d, lcid=%d, result=%d, state=%d, " \ 882 "cfg_state=%x\n", 883 __func__, msg->header.token, 884 pcb->src.b[5], pcb->src.b[4], pcb->src.b[3], 885 pcb->src.b[2], pcb->src.b[1], pcb->src.b[0], 886 pcb->dst.b[5], pcb->dst.b[4], pcb->dst.b[3], 887 pcb->dst.b[2], pcb->dst.b[1], pcb->dst.b[0], 888 pcb->psm, pcb->cid, op->result, pcb->state, pcb->cfg_state); 889 890 if (pcb->state != NG_BTSOCKET_L2CAP_CONFIGURING) { 891 mtx_unlock(&pcb->pcb_mtx); 892 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 893 894 return (ENOENT); 895 } 896 897 /* Check the result and disconnect socket of failure */ 898 if (op->result != NG_L2CAP_SUCCESS) 899 goto disconnect; 900 901 /* 902 * Now we done with remote side configuration. Configure local 903 * side if we have not done it yet. 904 */ 905 906 pcb->cfg_state &= ~NG_BTSOCKET_L2CAP_CFG_OUT_SENT; 907 pcb->cfg_state |= NG_BTSOCKET_L2CAP_CFG_OUT; 908 909 if (pcb->cfg_state == NG_BTSOCKET_L2CAP_CFG_BOTH) { 910 /* Configuration complete - mask socket as open */ 911 ng_btsocket_l2cap_untimeout(pcb); 912 pcb->state = NG_BTSOCKET_L2CAP_OPEN; 913 soisconnected(pcb->so); 914 } else { 915 if (!(pcb->cfg_state & NG_BTSOCKET_L2CAP_CFG_IN_SENT)) { 916 /* Send L2CA_Config request - incoming path */ 917 error = ng_btsocket_l2cap_send_l2ca_cfg_req(pcb); 918 if (error != 0) 919 goto disconnect; 920 921 pcb->cfg_state |= NG_BTSOCKET_L2CAP_CFG_IN_SENT; 922 } 923 } 924 925 mtx_unlock(&pcb->pcb_mtx); 926 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 927 928 return (error); 929 930 disconnect: 931 ng_btsocket_l2cap_untimeout(pcb); 932 933 /* Send disconnect with "zero" token */ 934 ng_btsocket_l2cap_send_l2ca_discon_req(0, pcb); 935 936 /* ... and close the socket */ 937 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 938 soisdisconnected(pcb->so); 939 940 mtx_unlock(&pcb->pcb_mtx); 941 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 942 943 return (error); 944 } /* ng_btsocket_l2cap_process_l2ca_cfg_rsp_rsp */ 945 946 /* 947 * Process L2CA_Config indicator 948 */ 949 950 static int 951 ng_btsocket_l2cap_process_l2ca_cfg_ind(struct ng_mesg *msg, 952 ng_btsocket_l2cap_rtentry_p rt) 953 { 954 ng_l2cap_l2ca_cfg_ind_ip *ip = NULL; 955 ng_btsocket_l2cap_pcb_t *pcb = NULL; 956 int error = 0; 957 958 if (msg->header.arglen != sizeof(*ip)) 959 return (EMSGSIZE); 960 961 ip = (ng_l2cap_l2ca_cfg_ind_ip *)(msg->data); 962 963 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 964 965 /* Check for the open socket that has given channel ID */ 966 pcb = ng_btsocket_l2cap_pcb_by_cid(&rt->src, ip->lcid, 967 NG_L2CAP_L2CA_IDTYPE_BREDR); 968 if (pcb == NULL) { 969 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 970 return (ENOENT); 971 } 972 973 mtx_lock(&pcb->pcb_mtx); 974 975 NG_BTSOCKET_L2CAP_INFO( 976 "%s: Got L2CA_Config indicator, src bdaddr=%x:%x:%x:%x:%x:%x, " \ 977 "dst bdaddr=%x:%x:%x:%x:%x:%x, psm=%d, lcid=%d, state=%d, cfg_state=%x\n", 978 __func__, 979 pcb->src.b[5], pcb->src.b[4], pcb->src.b[3], 980 pcb->src.b[2], pcb->src.b[1], pcb->src.b[0], 981 pcb->dst.b[5], pcb->dst.b[4], pcb->dst.b[3], 982 pcb->dst.b[2], pcb->dst.b[1], pcb->dst.b[0], 983 pcb->psm, pcb->cid, pcb->state, pcb->cfg_state); 984 985 /* XXX FIXME re-configuration on open socket */ 986 if (pcb->state != NG_BTSOCKET_L2CAP_CONFIGURING) { 987 mtx_unlock(&pcb->pcb_mtx); 988 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 989 990 return (ENOENT); 991 } 992 993 /* 994 * XXX FIXME Actually set flush and link timeout. Set QoS here if 995 * required. Resolve conficts (flush_timo). Note outgoing MTU (peer's 996 * incoming MTU) and incoming flow spec. 997 */ 998 999 pcb->omtu = ip->omtu; 1000 bcopy(&ip->iflow, &pcb->iflow, sizeof(pcb->iflow)); 1001 pcb->flush_timo = ip->flush_timo; 1002 1003 /* 1004 * Send L2CA_Config response to our peer and check for the errors, 1005 * if any send disconnect to close the channel. 1006 */ 1007 1008 if (!(pcb->cfg_state & NG_BTSOCKET_L2CAP_CFG_OUT_SENT)) { 1009 error = ng_btsocket_l2cap_send_l2ca_cfg_rsp(pcb); 1010 if (error != 0) { 1011 ng_btsocket_l2cap_untimeout(pcb); 1012 1013 pcb->so->so_error = error; 1014 1015 /* Send disconnect with "zero" token */ 1016 ng_btsocket_l2cap_send_l2ca_discon_req(0, pcb); 1017 1018 /* ... and close the socket */ 1019 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 1020 soisdisconnected(pcb->so); 1021 } else 1022 pcb->cfg_state |= NG_BTSOCKET_L2CAP_CFG_OUT_SENT; 1023 } 1024 1025 mtx_unlock(&pcb->pcb_mtx); 1026 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1027 1028 return (error); 1029 } /* ng_btsocket_l2cap_process_l2cap_cfg_ind */ 1030 1031 /* 1032 * Process L2CA_Disconnect response 1033 */ 1034 1035 static int 1036 ng_btsocket_l2cap_process_l2ca_discon_rsp(struct ng_mesg *msg, 1037 ng_btsocket_l2cap_rtentry_p rt) 1038 { 1039 ng_l2cap_l2ca_discon_op *op = NULL; 1040 ng_btsocket_l2cap_pcb_t *pcb = NULL; 1041 1042 /* Check message */ 1043 if (msg->header.arglen != sizeof(*op)) 1044 return (EMSGSIZE); 1045 1046 op = (ng_l2cap_l2ca_discon_op *)(msg->data); 1047 1048 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 1049 1050 /* 1051 * Socket layer must have issued L2CA_Disconnect request, so there 1052 * must be a socket that wants to be disconnected. Use Netgraph 1053 * message token to find it. 1054 */ 1055 1056 pcb = ng_btsocket_l2cap_pcb_by_token(msg->header.token); 1057 if (pcb == NULL) { 1058 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1059 return (0); 1060 } 1061 1062 mtx_lock(&pcb->pcb_mtx); 1063 1064 /* XXX Close socket no matter what op->result says */ 1065 if (pcb->state != NG_BTSOCKET_L2CAP_CLOSED) { 1066 NG_BTSOCKET_L2CAP_INFO( 1067 "%s: Got L2CA_Disconnect response, token=%d, src bdaddr=%x:%x:%x:%x:%x:%x, " \ 1068 "dst bdaddr=%x:%x:%x:%x:%x:%x, psm=%d, lcid=%d, result=%d, state=%d\n", 1069 __func__, msg->header.token, 1070 pcb->src.b[5], pcb->src.b[4], pcb->src.b[3], 1071 pcb->src.b[2], pcb->src.b[1], pcb->src.b[0], 1072 pcb->dst.b[5], pcb->dst.b[4], pcb->dst.b[3], 1073 pcb->dst.b[2], pcb->dst.b[1], pcb->dst.b[0], 1074 pcb->psm, pcb->cid, op->result, pcb->state); 1075 1076 ng_btsocket_l2cap_untimeout(pcb); 1077 1078 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 1079 soisdisconnected(pcb->so); 1080 } 1081 1082 mtx_unlock(&pcb->pcb_mtx); 1083 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1084 1085 return (0); 1086 } /* ng_btsocket_l2cap_process_l2ca_discon_rsp */ 1087 1088 /* 1089 * Process L2CA_Disconnect indicator 1090 */ 1091 1092 static int 1093 ng_btsocket_l2cap_process_l2ca_discon_ind(struct ng_mesg *msg, 1094 ng_btsocket_l2cap_rtentry_p rt) 1095 { 1096 ng_l2cap_l2ca_discon_ind_ip *ip = NULL; 1097 ng_btsocket_l2cap_pcb_t *pcb = NULL; 1098 1099 /* Check message */ 1100 if (msg->header.arglen != sizeof(*ip)) 1101 return (EMSGSIZE); 1102 1103 ip = (ng_l2cap_l2ca_discon_ind_ip *)(msg->data); 1104 1105 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 1106 1107 /* Look for the socket with given channel ID */ 1108 pcb = ng_btsocket_l2cap_pcb_by_cid(&rt->src, ip->lcid, 1109 ip->idtype); 1110 if (pcb == NULL) { 1111 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1112 return (0); 1113 } 1114 1115 /* 1116 * Channel has already been destroyed, so disconnect the socket 1117 * and be done with it. If there was any pending request we can 1118 * not do anything here anyway. 1119 */ 1120 1121 mtx_lock(&pcb->pcb_mtx); 1122 1123 NG_BTSOCKET_L2CAP_INFO( 1124 "%s: Got L2CA_Disconnect indicator, src bdaddr=%x:%x:%x:%x:%x:%x, " \ 1125 "dst bdaddr=%x:%x:%x:%x:%x:%x, psm=%d, lcid=%d, state=%d\n", 1126 __func__, 1127 pcb->src.b[5], pcb->src.b[4], pcb->src.b[3], 1128 pcb->src.b[2], pcb->src.b[1], pcb->src.b[0], 1129 pcb->dst.b[5], pcb->dst.b[4], pcb->dst.b[3], 1130 pcb->dst.b[2], pcb->dst.b[1], pcb->dst.b[0], 1131 pcb->psm, pcb->cid, pcb->state); 1132 1133 if (pcb->flags & NG_BTSOCKET_L2CAP_TIMO) 1134 ng_btsocket_l2cap_untimeout(pcb); 1135 1136 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 1137 soisdisconnected(pcb->so); 1138 1139 mtx_unlock(&pcb->pcb_mtx); 1140 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1141 1142 return (0); 1143 } /* ng_btsocket_l2cap_process_l2ca_discon_ind */ 1144 1145 /* 1146 * Process L2CA_Write response 1147 */ 1148 1149 static int 1150 ng_btsocket_l2cap_process_l2ca_write_rsp(struct ng_mesg *msg, 1151 ng_btsocket_l2cap_rtentry_p rt) 1152 { 1153 ng_l2cap_l2ca_write_op *op = NULL; 1154 ng_btsocket_l2cap_pcb_t *pcb = NULL; 1155 1156 /* Check message */ 1157 if (msg->header.arglen != sizeof(*op)) 1158 return (EMSGSIZE); 1159 1160 op = (ng_l2cap_l2ca_write_op *)(msg->data); 1161 1162 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 1163 1164 /* Look for the socket with given token */ 1165 pcb = ng_btsocket_l2cap_pcb_by_token(msg->header.token); 1166 if (pcb == NULL) { 1167 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1168 return (ENOENT); 1169 } 1170 1171 mtx_lock(&pcb->pcb_mtx); 1172 1173 NG_BTSOCKET_L2CAP_INFO( 1174 "%s: Got L2CA_Write response, src bdaddr=%x:%x:%x:%x:%x:%x, " \ 1175 "dst bdaddr=%x:%x:%x:%x:%x:%x, psm=%d, lcid=%d, result=%d, length=%d, " \ 1176 "state=%d\n", __func__, 1177 pcb->src.b[5], pcb->src.b[4], pcb->src.b[3], 1178 pcb->src.b[2], pcb->src.b[1], pcb->src.b[0], 1179 pcb->dst.b[5], pcb->dst.b[4], pcb->dst.b[3], 1180 pcb->dst.b[2], pcb->dst.b[1], pcb->dst.b[0], 1181 pcb->psm, pcb->cid, op->result, op->length, 1182 pcb->state); 1183 1184 if (pcb->state != NG_BTSOCKET_L2CAP_OPEN) { 1185 mtx_unlock(&pcb->pcb_mtx); 1186 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1187 1188 return (ENOENT); 1189 } 1190 1191 ng_btsocket_l2cap_untimeout(pcb); 1192 1193 /* 1194 * Check if we have more data to send 1195 */ 1196 sbdroprecord(&pcb->so->so_snd); 1197 if (sbavail(&pcb->so->so_snd) > 0) { 1198 if (ng_btsocket_l2cap_send2(pcb) == 0) 1199 ng_btsocket_l2cap_timeout(pcb); 1200 else 1201 sbdroprecord(&pcb->so->so_snd); /* XXX */ 1202 } 1203 1204 /* 1205 * Now set the result, drop packet from the socket send queue and 1206 * ask for more (wakeup sender) 1207 */ 1208 1209 pcb->so->so_error = ng_btsocket_l2cap_result2errno(op->result); 1210 sowwakeup(pcb->so); 1211 1212 mtx_unlock(&pcb->pcb_mtx); 1213 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1214 1215 return (0); 1216 } /* ng_btsocket_l2cap_process_l2ca_write_rsp */ 1217 1218 /* 1219 * Send L2CA_Connect request 1220 */ 1221 1222 static int 1223 ng_btsocket_l2cap_send_l2ca_con_req(ng_btsocket_l2cap_pcb_p pcb) 1224 { 1225 struct ng_mesg *msg = NULL; 1226 ng_l2cap_l2ca_con_ip *ip = NULL; 1227 int error = 0; 1228 1229 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 1230 1231 if (pcb->rt == NULL || 1232 pcb->rt->hook == NULL || NG_HOOK_NOT_VALID(pcb->rt->hook)) 1233 return (ENETDOWN); 1234 1235 NG_MKMESSAGE(msg, NGM_L2CAP_COOKIE, NGM_L2CAP_L2CA_CON, 1236 sizeof(*ip), M_NOWAIT); 1237 if (msg == NULL) 1238 return (ENOMEM); 1239 1240 msg->header.token = pcb->token; 1241 1242 ip = (ng_l2cap_l2ca_con_ip *)(msg->data); 1243 bcopy(&pcb->dst, &ip->bdaddr, sizeof(ip->bdaddr)); 1244 ip->psm = pcb->psm; 1245 ip->linktype = ng_btsock_l2cap_addrtype_to_linktype(pcb->dsttype); 1246 ip->idtype = pcb->idtype; 1247 NG_SEND_MSG_HOOK(error, ng_btsocket_l2cap_node, msg,pcb->rt->hook, 0); 1248 1249 return (error); 1250 } /* ng_btsocket_l2cap_send_l2ca_con_req */ 1251 1252 /* 1253 * Send L2CA_Connect response 1254 */ 1255 1256 static int 1257 ng_btsocket_l2cap_send_l2ca_con_rsp_req(u_int32_t token, 1258 ng_btsocket_l2cap_rtentry_p rt, bdaddr_p dst, int ident, 1259 int lcid, int result, int linktype) 1260 { 1261 struct ng_mesg *msg = NULL; 1262 ng_l2cap_l2ca_con_rsp_ip *ip = NULL; 1263 int error = 0; 1264 1265 if (rt == NULL || rt->hook == NULL || NG_HOOK_NOT_VALID(rt->hook)) 1266 return (ENETDOWN); 1267 1268 NG_MKMESSAGE(msg, NGM_L2CAP_COOKIE, NGM_L2CAP_L2CA_CON_RSP, 1269 sizeof(*ip), M_NOWAIT); 1270 if (msg == NULL) 1271 return (ENOMEM); 1272 1273 msg->header.token = token; 1274 1275 ip = (ng_l2cap_l2ca_con_rsp_ip *)(msg->data); 1276 bcopy(dst, &ip->bdaddr, sizeof(ip->bdaddr)); 1277 ip->ident = ident; 1278 ip->lcid = lcid; 1279 ip->linktype = linktype; 1280 ip->result = result; 1281 ip->status = 0; 1282 1283 NG_SEND_MSG_HOOK(error, ng_btsocket_l2cap_node, msg, rt->hook, 0); 1284 1285 return (error); 1286 } /* ng_btsocket_l2cap_send_l2ca_con_rsp_req */ 1287 1288 /* 1289 * Send L2CA_Config request 1290 */ 1291 1292 static int 1293 ng_btsocket_l2cap_send_l2ca_cfg_req(ng_btsocket_l2cap_pcb_p pcb) 1294 { 1295 struct ng_mesg *msg = NULL; 1296 ng_l2cap_l2ca_cfg_ip *ip = NULL; 1297 int error = 0; 1298 1299 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 1300 1301 if (pcb->rt == NULL || 1302 pcb->rt->hook == NULL || NG_HOOK_NOT_VALID(pcb->rt->hook)) 1303 return (ENETDOWN); 1304 1305 NG_MKMESSAGE(msg, NGM_L2CAP_COOKIE, NGM_L2CAP_L2CA_CFG, 1306 sizeof(*ip), M_NOWAIT); 1307 if (msg == NULL) 1308 return (ENOMEM); 1309 1310 msg->header.token = pcb->token; 1311 1312 ip = (ng_l2cap_l2ca_cfg_ip *)(msg->data); 1313 ip->lcid = pcb->cid; 1314 ip->imtu = pcb->imtu; 1315 bcopy(&pcb->oflow, &ip->oflow, sizeof(ip->oflow)); 1316 ip->flush_timo = pcb->flush_timo; 1317 ip->link_timo = pcb->link_timo; 1318 1319 NG_SEND_MSG_HOOK(error, ng_btsocket_l2cap_node, msg,pcb->rt->hook, 0); 1320 1321 return (error); 1322 } /* ng_btsocket_l2cap_send_l2ca_cfg_req */ 1323 1324 /* 1325 * Send L2CA_Config response 1326 */ 1327 1328 static int 1329 ng_btsocket_l2cap_send_l2ca_cfg_rsp(ng_btsocket_l2cap_pcb_p pcb) 1330 { 1331 struct ng_mesg *msg = NULL; 1332 ng_l2cap_l2ca_cfg_rsp_ip *ip = NULL; 1333 int error = 0; 1334 1335 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 1336 1337 if (pcb->rt == NULL || 1338 pcb->rt->hook == NULL || NG_HOOK_NOT_VALID(pcb->rt->hook)) 1339 return (ENETDOWN); 1340 1341 NG_MKMESSAGE(msg, NGM_L2CAP_COOKIE, NGM_L2CAP_L2CA_CFG_RSP, 1342 sizeof(*ip), M_NOWAIT); 1343 if (msg == NULL) 1344 return (ENOMEM); 1345 1346 msg->header.token = pcb->token; 1347 1348 ip = (ng_l2cap_l2ca_cfg_rsp_ip *)(msg->data); 1349 ip->lcid = pcb->cid; 1350 ip->omtu = pcb->omtu; 1351 bcopy(&pcb->iflow, &ip->iflow, sizeof(ip->iflow)); 1352 1353 NG_SEND_MSG_HOOK(error, ng_btsocket_l2cap_node, msg, pcb->rt->hook, 0); 1354 1355 return (error); 1356 } /* ng_btsocket_l2cap_send_l2ca_cfg_rsp */ 1357 1358 /* 1359 * Send L2CA_Disconnect request 1360 */ 1361 1362 static int 1363 ng_btsocket_l2cap_send_l2ca_discon_req(u_int32_t token, 1364 ng_btsocket_l2cap_pcb_p pcb) 1365 { 1366 struct ng_mesg *msg = NULL; 1367 ng_l2cap_l2ca_discon_ip *ip = NULL; 1368 int error = 0; 1369 1370 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 1371 1372 if (pcb->rt == NULL || 1373 pcb->rt->hook == NULL || NG_HOOK_NOT_VALID(pcb->rt->hook)) 1374 return (ENETDOWN); 1375 1376 NG_MKMESSAGE(msg, NGM_L2CAP_COOKIE, NGM_L2CAP_L2CA_DISCON, 1377 sizeof(*ip), M_NOWAIT); 1378 if (msg == NULL) 1379 return (ENOMEM); 1380 1381 msg->header.token = token; 1382 1383 ip = (ng_l2cap_l2ca_discon_ip *)(msg->data); 1384 ip->lcid = pcb->cid; 1385 ip->idtype = pcb->idtype; 1386 1387 NG_SEND_MSG_HOOK(error, ng_btsocket_l2cap_node, msg,pcb->rt->hook, 0); 1388 1389 return (error); 1390 } /* ng_btsocket_l2cap_send_l2ca_discon_req */ 1391 1392 /***************************************************************************** 1393 ***************************************************************************** 1394 ** Socket interface 1395 ***************************************************************************** 1396 *****************************************************************************/ 1397 1398 /* 1399 * L2CAP sockets data input routine 1400 */ 1401 1402 static void 1403 ng_btsocket_l2cap_data_input(struct mbuf *m, hook_p hook) 1404 { 1405 ng_l2cap_hdr_t *hdr = NULL; 1406 ng_l2cap_clt_hdr_t *clt_hdr = NULL; 1407 ng_btsocket_l2cap_pcb_t *pcb = NULL; 1408 ng_btsocket_l2cap_rtentry_t *rt = NULL; 1409 uint16_t idtype; 1410 1411 if (hook == NULL) { 1412 NG_BTSOCKET_L2CAP_ALERT( 1413 "%s: Invalid source hook for L2CAP data packet\n", __func__); 1414 goto drop; 1415 } 1416 1417 rt = (ng_btsocket_l2cap_rtentry_t *) NG_HOOK_PRIVATE(hook); 1418 if (rt == NULL) { 1419 NG_BTSOCKET_L2CAP_ALERT( 1420 "%s: Could not find out source bdaddr for L2CAP data packet\n", __func__); 1421 goto drop; 1422 } 1423 1424 m = m_pullup(m, sizeof(uint16_t)); 1425 idtype = *mtod(m, uint16_t *); 1426 m_adj(m, sizeof(uint16_t)); 1427 1428 /* Make sure we can access header */ 1429 if (m->m_pkthdr.len < sizeof(*hdr)) { 1430 NG_BTSOCKET_L2CAP_ERR( 1431 "%s: L2CAP data packet too small, len=%d\n", __func__, m->m_pkthdr.len); 1432 goto drop; 1433 } 1434 1435 if (m->m_len < sizeof(*hdr)) { 1436 m = m_pullup(m, sizeof(*hdr)); 1437 if (m == NULL) 1438 goto drop; 1439 } 1440 1441 /* Strip L2CAP packet header and verify packet length */ 1442 hdr = mtod(m, ng_l2cap_hdr_t *); 1443 m_adj(m, sizeof(*hdr)); 1444 1445 if (hdr->length != m->m_pkthdr.len) { 1446 NG_BTSOCKET_L2CAP_ERR( 1447 "%s: Bad L2CAP data packet length, len=%d, length=%d\n", 1448 __func__, m->m_pkthdr.len, hdr->length); 1449 goto drop; 1450 } 1451 1452 /* 1453 * Now process packet. Two cases: 1454 * 1455 * 1) Normal packet (cid != 2) then find connected socket and append 1456 * mbuf to the socket queue. Wakeup socket. 1457 * 1458 * 2) Broadcast packet (cid == 2) then find all sockets that connected 1459 * to the given PSM and have SO_BROADCAST bit set and append mbuf 1460 * to the socket queue. Wakeup socket. 1461 */ 1462 1463 NG_BTSOCKET_L2CAP_INFO( 1464 "%s: Received L2CAP data packet: src bdaddr=%x:%x:%x:%x:%x:%x, " \ 1465 "dcid=%d, length=%d\n", 1466 __func__, 1467 rt->src.b[5], rt->src.b[4], rt->src.b[3], 1468 rt->src.b[2], rt->src.b[1], rt->src.b[0], 1469 hdr->dcid, hdr->length); 1470 1471 if ((hdr->dcid >= NG_L2CAP_FIRST_CID) || 1472 (idtype == NG_L2CAP_L2CA_IDTYPE_ATT)|| 1473 (idtype == NG_L2CAP_L2CA_IDTYPE_SMP) 1474 ){ 1475 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 1476 1477 /* Normal packet: find connected socket */ 1478 pcb = ng_btsocket_l2cap_pcb_by_cid(&rt->src, hdr->dcid,idtype); 1479 if (pcb == NULL) { 1480 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1481 goto drop; 1482 } 1483 1484 mtx_lock(&pcb->pcb_mtx); 1485 1486 if (pcb->state != NG_BTSOCKET_L2CAP_OPEN) { 1487 NG_BTSOCKET_L2CAP_ERR( 1488 "%s: No connected socket found, src bdaddr=%x:%x:%x:%x:%x:%x, dcid=%d, " \ 1489 "state=%d\n", __func__, 1490 rt->src.b[5], rt->src.b[4], rt->src.b[3], 1491 rt->src.b[2], rt->src.b[1], rt->src.b[0], 1492 hdr->dcid, pcb->state); 1493 1494 mtx_unlock(&pcb->pcb_mtx); 1495 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1496 goto drop; 1497 } 1498 1499 /* Check packet size against socket's incoming MTU */ 1500 if (hdr->length > pcb->imtu) { 1501 NG_BTSOCKET_L2CAP_ERR( 1502 "%s: L2CAP data packet too big, src bdaddr=%x:%x:%x:%x:%x:%x, " \ 1503 "dcid=%d, length=%d, imtu=%d\n", 1504 __func__, 1505 rt->src.b[5], rt->src.b[4], rt->src.b[3], 1506 rt->src.b[2], rt->src.b[1], rt->src.b[0], 1507 hdr->dcid, hdr->length, pcb->imtu); 1508 1509 mtx_unlock(&pcb->pcb_mtx); 1510 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 1511 goto drop; 1512 } 1513 1514 /* Check if we have enough space in socket receive queue */ 1515 if (m->m_pkthdr.len > sbspace(&pcb->so->so_rcv)) { 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 static void 1891 ng_btsocket_l2cap_init(void *arg __unused) 1892 { 1893 int error = 0; 1894 1895 ng_btsocket_l2cap_node = NULL; 1896 ng_btsocket_l2cap_debug_level = NG_BTSOCKET_WARN_LEVEL; 1897 1898 /* Register Netgraph node type */ 1899 error = ng_newtype(&typestruct); 1900 if (error != 0) { 1901 NG_BTSOCKET_L2CAP_ALERT( 1902 "%s: Could not register Netgraph node type, error=%d\n", __func__, error); 1903 1904 return; 1905 } 1906 1907 /* Create Netgrapg node */ 1908 error = ng_make_node_common(&typestruct, &ng_btsocket_l2cap_node); 1909 if (error != 0) { 1910 NG_BTSOCKET_L2CAP_ALERT( 1911 "%s: Could not create Netgraph node, error=%d\n", __func__, error); 1912 1913 ng_btsocket_l2cap_node = NULL; 1914 1915 return; 1916 } 1917 1918 error = ng_name_node(ng_btsocket_l2cap_node, 1919 NG_BTSOCKET_L2CAP_NODE_TYPE); 1920 if (error != 0) { 1921 NG_BTSOCKET_L2CAP_ALERT( 1922 "%s: Could not name Netgraph node, error=%d\n", __func__, error); 1923 1924 NG_NODE_UNREF(ng_btsocket_l2cap_node); 1925 ng_btsocket_l2cap_node = NULL; 1926 1927 return; 1928 } 1929 1930 /* Create input queue */ 1931 NG_BT_ITEMQ_INIT(&ng_btsocket_l2cap_queue, ifqmaxlen); 1932 mtx_init(&ng_btsocket_l2cap_queue_mtx, 1933 "btsocks_l2cap_queue_mtx", NULL, MTX_DEF); 1934 TASK_INIT(&ng_btsocket_l2cap_queue_task, 0, 1935 ng_btsocket_l2cap_input, NULL); 1936 1937 /* Create list of sockets */ 1938 LIST_INIT(&ng_btsocket_l2cap_sockets); 1939 mtx_init(&ng_btsocket_l2cap_sockets_mtx, 1940 "btsocks_l2cap_sockets_mtx", NULL, MTX_DEF); 1941 1942 /* Routing table */ 1943 LIST_INIT(&ng_btsocket_l2cap_rt); 1944 mtx_init(&ng_btsocket_l2cap_rt_mtx, 1945 "btsocks_l2cap_rt_mtx", NULL, MTX_DEF); 1946 TASK_INIT(&ng_btsocket_l2cap_rt_task, 0, 1947 ng_btsocket_l2cap_rtclean, NULL); 1948 } /* ng_btsocket_l2cap_init */ 1949 SYSINIT(ng_btsocket_l2cap_init, SI_SUB_PROTO_DOMAIN, SI_ORDER_THIRD, 1950 ng_btsocket_l2cap_init, NULL); 1951 1952 /* 1953 * Abort connection on socket 1954 */ 1955 1956 void 1957 ng_btsocket_l2cap_abort(struct socket *so) 1958 { 1959 so->so_error = ECONNABORTED; 1960 1961 (void)ng_btsocket_l2cap_disconnect(so); 1962 } /* ng_btsocket_l2cap_abort */ 1963 1964 void 1965 ng_btsocket_l2cap_close(struct socket *so) 1966 { 1967 1968 (void)ng_btsocket_l2cap_disconnect(so); 1969 } /* ng_btsocket_l2cap_close */ 1970 1971 /* 1972 * Accept connection on socket. Nothing to do here, socket must be connected 1973 * and ready, so just return peer address and be done with it. 1974 */ 1975 1976 int 1977 ng_btsocket_l2cap_accept(struct socket *so, struct sockaddr **nam) 1978 { 1979 if (ng_btsocket_l2cap_node == NULL) 1980 return (EINVAL); 1981 1982 return (ng_btsocket_l2cap_peeraddr(so, nam)); 1983 } /* ng_btsocket_l2cap_accept */ 1984 1985 /* 1986 * Create and attach new socket 1987 */ 1988 1989 int 1990 ng_btsocket_l2cap_attach(struct socket *so, int proto, struct thread *td) 1991 { 1992 static u_int32_t token = 0; 1993 ng_btsocket_l2cap_pcb_p pcb = so2l2cap_pcb(so); 1994 int error; 1995 1996 /* Check socket and protocol */ 1997 if (ng_btsocket_l2cap_node == NULL) 1998 return (EPROTONOSUPPORT); 1999 if (so->so_type != SOCK_SEQPACKET) 2000 return (ESOCKTNOSUPPORT); 2001 2002 #if 0 /* XXX sonewconn() calls "pru_attach" with proto == 0 */ 2003 if (proto != 0) 2004 if (proto != BLUETOOTH_PROTO_L2CAP) 2005 return (EPROTONOSUPPORT); 2006 #endif /* XXX */ 2007 2008 if (pcb != NULL) 2009 return (EISCONN); 2010 2011 /* Reserve send and receive space if it is not reserved yet */ 2012 if ((so->so_snd.sb_hiwat == 0) || (so->so_rcv.sb_hiwat == 0)) { 2013 error = soreserve(so, NG_BTSOCKET_L2CAP_SENDSPACE, 2014 NG_BTSOCKET_L2CAP_RECVSPACE); 2015 if (error != 0) 2016 return (error); 2017 } 2018 2019 /* Allocate the PCB */ 2020 pcb = malloc(sizeof(*pcb), 2021 M_NETGRAPH_BTSOCKET_L2CAP, M_NOWAIT | M_ZERO); 2022 if (pcb == NULL) 2023 return (ENOMEM); 2024 2025 /* Link the PCB and the socket */ 2026 so->so_pcb = (caddr_t) pcb; 2027 pcb->so = so; 2028 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 2029 2030 /* Initialize PCB */ 2031 pcb->imtu = pcb->omtu = NG_L2CAP_MTU_DEFAULT; 2032 2033 /* Default flow */ 2034 pcb->iflow.flags = 0x0; 2035 pcb->iflow.service_type = NG_HCI_SERVICE_TYPE_BEST_EFFORT; 2036 pcb->iflow.token_rate = 0xffffffff; /* maximum */ 2037 pcb->iflow.token_bucket_size = 0xffffffff; /* maximum */ 2038 pcb->iflow.peak_bandwidth = 0x00000000; /* maximum */ 2039 pcb->iflow.latency = 0xffffffff; /* don't care */ 2040 pcb->iflow.delay_variation = 0xffffffff; /* don't care */ 2041 2042 bcopy(&pcb->iflow, &pcb->oflow, sizeof(pcb->oflow)); 2043 2044 pcb->flush_timo = NG_L2CAP_FLUSH_TIMO_DEFAULT; 2045 pcb->link_timo = NG_L2CAP_LINK_TIMO_DEFAULT; 2046 2047 /* 2048 * XXX Mark PCB mutex as DUPOK to prevent "duplicated lock of 2049 * the same type" message. When accepting new L2CAP connection 2050 * ng_btsocket_l2cap_process_l2ca_con_ind() holds both PCB mutexes 2051 * for "old" (accepting) PCB and "new" (created) PCB. 2052 */ 2053 2054 mtx_init(&pcb->pcb_mtx, "btsocks_l2cap_pcb_mtx", NULL, 2055 MTX_DEF|MTX_DUPOK); 2056 callout_init_mtx(&pcb->timo, &pcb->pcb_mtx, 0); 2057 2058 /* 2059 * Add the PCB to the list 2060 * 2061 * XXX FIXME VERY IMPORTANT! 2062 * 2063 * This is totally FUBAR. We could get here in two cases: 2064 * 2065 * 1) When user calls socket() 2066 * 2) When we need to accept new incoming connection and call 2067 * sonewconn() 2068 * 2069 * In the first case we must acquire ng_btsocket_l2cap_sockets_mtx. 2070 * In the second case we hold ng_btsocket_l2cap_sockets_mtx already. 2071 * So we now need to distinguish between these cases. From reading 2072 * /sys/kern/uipc_socket.c we can find out that sonewconn() calls 2073 * pru_attach with proto == 0 and td == NULL. For now use this fact 2074 * to figure out if we were called from socket() or from sonewconn(). 2075 */ 2076 2077 if (td != NULL) 2078 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 2079 else 2080 mtx_assert(&ng_btsocket_l2cap_sockets_mtx, MA_OWNED); 2081 2082 /* Set PCB token. Use ng_btsocket_l2cap_sockets_mtx for protection */ 2083 if (++ token == 0) 2084 token ++; 2085 2086 pcb->token = token; 2087 2088 LIST_INSERT_HEAD(&ng_btsocket_l2cap_sockets, pcb, next); 2089 2090 if (td != NULL) 2091 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 2092 2093 return (0); 2094 } /* ng_btsocket_l2cap_attach */ 2095 2096 /* 2097 * Bind socket 2098 */ 2099 2100 int 2101 ng_btsocket_l2cap_bind(struct socket *so, struct sockaddr *nam, 2102 struct thread *td) 2103 { 2104 ng_btsocket_l2cap_pcb_t *pcb = NULL; 2105 struct sockaddr_l2cap *sa = (struct sockaddr_l2cap *) nam; 2106 int psm, error = 0; 2107 2108 if (ng_btsocket_l2cap_node == NULL) 2109 return (EINVAL); 2110 2111 /* Verify address */ 2112 if (sa == NULL) 2113 return (EINVAL); 2114 if (sa->l2cap_family != AF_BLUETOOTH) 2115 return (EAFNOSUPPORT); 2116 /*For the time being, Not support LE binding.*/ 2117 if ((sa->l2cap_len != sizeof(*sa))&& 2118 (sa->l2cap_len != sizeof(struct sockaddr_l2cap_compat))) 2119 return (EINVAL); 2120 2121 psm = le16toh(sa->l2cap_psm); 2122 2123 /* 2124 * Check if other socket has this address already (look for exact 2125 * match PSM and bdaddr) and assign socket address if it's available. 2126 * 2127 * Note: socket can be bound to ANY PSM (zero) thus allowing several 2128 * channels with the same PSM between the same pair of BD_ADDR'es. 2129 */ 2130 2131 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 2132 2133 LIST_FOREACH(pcb, &ng_btsocket_l2cap_sockets, next) 2134 if (psm != 0 && psm == pcb->psm && 2135 bcmp(&pcb->src, &sa->l2cap_bdaddr, sizeof(bdaddr_t)) == 0) 2136 break; 2137 2138 if (pcb == NULL) { 2139 /* Set socket address */ 2140 pcb = so2l2cap_pcb(so); 2141 if (pcb != NULL) { 2142 bcopy(&sa->l2cap_bdaddr, &pcb->src, sizeof(pcb->src)); 2143 pcb->psm = psm; 2144 } else 2145 error = EINVAL; 2146 } else 2147 error = EADDRINUSE; 2148 2149 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 2150 2151 return (error); 2152 } /* ng_btsocket_l2cap_bind */ 2153 2154 /* 2155 * Connect socket 2156 */ 2157 2158 int 2159 ng_btsocket_l2cap_connect(struct socket *so, struct sockaddr *nam, 2160 struct thread *td) 2161 { 2162 ng_btsocket_l2cap_pcb_t *pcb = so2l2cap_pcb(so); 2163 struct sockaddr_l2cap_compat *sal = (struct sockaddr_l2cap_compat *) nam; 2164 struct sockaddr_l2cap *sa = (struct sockaddr_l2cap *)nam; 2165 struct sockaddr_l2cap ba; 2166 ng_btsocket_l2cap_rtentry_t *rt = NULL; 2167 int have_src, error = 0; 2168 int idtype = NG_L2CAP_L2CA_IDTYPE_BREDR; 2169 /* Check socket */ 2170 if (pcb == NULL) 2171 return (EINVAL); 2172 if (ng_btsocket_l2cap_node == NULL) 2173 return (EINVAL); 2174 if (pcb->state == NG_BTSOCKET_L2CAP_CONNECTING) 2175 return (EINPROGRESS); 2176 2177 /* Verify address */ 2178 if (sa == NULL) 2179 return (EINVAL); 2180 if (sa->l2cap_family != AF_BLUETOOTH) 2181 return (EAFNOSUPPORT); 2182 if (sa->l2cap_len == sizeof(*sal)){ 2183 bcopy(sal, &ba, sizeof(*sal)); 2184 sa = &ba; 2185 sa->l2cap_len = sizeof(*sa); 2186 sa->l2cap_bdaddr_type = BDADDR_BREDR; 2187 } 2188 if (sa->l2cap_len != sizeof(*sa)) 2189 return (EINVAL); 2190 if ((sa->l2cap_psm && sa->l2cap_cid)) 2191 return EINVAL; 2192 if (bcmp(&sa->l2cap_bdaddr, NG_HCI_BDADDR_ANY, sizeof(bdaddr_t)) == 0) 2193 return (EDESTADDRREQ); 2194 if((sa->l2cap_bdaddr_type == BDADDR_BREDR)&& 2195 (sa->l2cap_psm == 0)) 2196 return EDESTADDRREQ; 2197 if(sa->l2cap_bdaddr_type != BDADDR_BREDR){ 2198 if(sa->l2cap_cid == NG_L2CAP_ATT_CID){ 2199 idtype = NG_L2CAP_L2CA_IDTYPE_ATT; 2200 }else if (sa->l2cap_cid == NG_L2CAP_SMP_CID){ 2201 idtype =NG_L2CAP_L2CA_IDTYPE_SMP; 2202 }else{ 2203 //if cid == 0 idtype = NG_L2CAP_L2CA_IDTYPE_LE; 2204 // Not supported yet 2205 return EINVAL; 2206 } 2207 } 2208 if (pcb->psm != 0 && pcb->psm != le16toh(sa->l2cap_psm)) 2209 return (EINVAL); 2210 /* 2211 * Routing. Socket should be bound to some source address. The source 2212 * address can be ANY. Destination address must be set and it must not 2213 * be ANY. If source address is ANY then find first rtentry that has 2214 * src != dst. 2215 */ 2216 2217 mtx_lock(&ng_btsocket_l2cap_rt_mtx); 2218 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 2219 mtx_lock(&pcb->pcb_mtx); 2220 2221 /* Send destination address and PSM */ 2222 bcopy(&sa->l2cap_bdaddr, &pcb->dst, sizeof(pcb->dst)); 2223 pcb->psm = le16toh(sa->l2cap_psm); 2224 pcb->dsttype = sa->l2cap_bdaddr_type; 2225 pcb->cid = 0; 2226 pcb->idtype = idtype; 2227 pcb->rt = NULL; 2228 have_src = bcmp(&pcb->src, NG_HCI_BDADDR_ANY, sizeof(pcb->src)); 2229 2230 LIST_FOREACH(rt, &ng_btsocket_l2cap_rt, next) { 2231 if (rt->hook == NULL || NG_HOOK_NOT_VALID(rt->hook)) 2232 continue; 2233 2234 /* Match src and dst */ 2235 if (have_src) { 2236 if (bcmp(&pcb->src, &rt->src, sizeof(rt->src)) == 0) 2237 break; 2238 } else { 2239 if (bcmp(&pcb->dst, &rt->src, sizeof(rt->src)) != 0) 2240 break; 2241 } 2242 } 2243 2244 if (rt != NULL) { 2245 pcb->rt = rt; 2246 2247 if (!have_src){ 2248 bcopy(&rt->src, &pcb->src, sizeof(pcb->src)); 2249 pcb->srctype = 2250 (sa->l2cap_bdaddr_type == BDADDR_BREDR)? 2251 BDADDR_BREDR : BDADDR_LE_PUBLIC; 2252 } 2253 } else 2254 error = EHOSTUNREACH; 2255 2256 /* 2257 * Send L2CA_Connect request 2258 */ 2259 2260 if (error == 0) { 2261 error = ng_btsocket_l2cap_send_l2ca_con_req(pcb); 2262 if (error == 0) { 2263 pcb->flags |= NG_BTSOCKET_L2CAP_CLIENT; 2264 pcb->state = NG_BTSOCKET_L2CAP_CONNECTING; 2265 soisconnecting(pcb->so); 2266 2267 ng_btsocket_l2cap_timeout(pcb); 2268 } 2269 } 2270 2271 mtx_unlock(&pcb->pcb_mtx); 2272 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 2273 mtx_unlock(&ng_btsocket_l2cap_rt_mtx); 2274 2275 return (error); 2276 } /* ng_btsocket_l2cap_connect */ 2277 2278 /* 2279 * Process ioctl's calls on socket 2280 */ 2281 2282 int 2283 ng_btsocket_l2cap_control(struct socket *so, u_long cmd, void *data, 2284 struct ifnet *ifp, struct thread *td) 2285 { 2286 return (EINVAL); 2287 } /* ng_btsocket_l2cap_control */ 2288 2289 /* 2290 * Process getsockopt/setsockopt system calls 2291 */ 2292 2293 int 2294 ng_btsocket_l2cap_ctloutput(struct socket *so, struct sockopt *sopt) 2295 { 2296 ng_btsocket_l2cap_pcb_p pcb = so2l2cap_pcb(so); 2297 int error = 0; 2298 ng_l2cap_cfg_opt_val_t v; 2299 2300 if (pcb == NULL) 2301 return (EINVAL); 2302 if (ng_btsocket_l2cap_node == NULL) 2303 return (EINVAL); 2304 2305 if (sopt->sopt_level != SOL_L2CAP) 2306 return (0); 2307 2308 mtx_lock(&pcb->pcb_mtx); 2309 2310 switch (sopt->sopt_dir) { 2311 case SOPT_GET: 2312 switch (sopt->sopt_name) { 2313 case SO_L2CAP_IMTU: /* get incoming MTU */ 2314 error = sooptcopyout(sopt, &pcb->imtu, 2315 sizeof(pcb->imtu)); 2316 break; 2317 2318 case SO_L2CAP_OMTU: /* get outgoing (peer incoming) MTU */ 2319 error = sooptcopyout(sopt, &pcb->omtu, 2320 sizeof(pcb->omtu)); 2321 break; 2322 2323 case SO_L2CAP_IFLOW: /* get incoming flow spec. */ 2324 error = sooptcopyout(sopt, &pcb->iflow, 2325 sizeof(pcb->iflow)); 2326 break; 2327 2328 case SO_L2CAP_OFLOW: /* get outgoing flow spec. */ 2329 error = sooptcopyout(sopt, &pcb->oflow, 2330 sizeof(pcb->oflow)); 2331 break; 2332 2333 case SO_L2CAP_FLUSH: /* get flush timeout */ 2334 error = sooptcopyout(sopt, &pcb->flush_timo, 2335 sizeof(pcb->flush_timo)); 2336 break; 2337 case SO_L2CAP_ENCRYPTED: /* get encrypt required */ 2338 error = sooptcopyout(sopt, &pcb->need_encrypt, 2339 sizeof(pcb->need_encrypt)); 2340 break; 2341 2342 default: 2343 error = ENOPROTOOPT; 2344 break; 2345 } 2346 break; 2347 2348 case SOPT_SET: 2349 /* 2350 * XXX 2351 * We do not allow to change these parameters while socket is 2352 * connected or we are in the process of creating a connection. 2353 * May be this should indicate re-configuration of the open 2354 * channel? 2355 */ 2356 2357 if (pcb->state != NG_BTSOCKET_L2CAP_CLOSED) { 2358 error = EACCES; 2359 break; 2360 } 2361 2362 switch (sopt->sopt_name) { 2363 case SO_L2CAP_IMTU: /* set incoming MTU */ 2364 error = sooptcopyin(sopt, &v, sizeof(v), sizeof(v.mtu)); 2365 if (error == 0) 2366 pcb->imtu = v.mtu; 2367 break; 2368 2369 case SO_L2CAP_OFLOW: /* set outgoing flow spec. */ 2370 error = sooptcopyin(sopt, &v, sizeof(v),sizeof(v.flow)); 2371 if (error == 0) 2372 bcopy(&v.flow, &pcb->oflow, sizeof(pcb->oflow)); 2373 break; 2374 2375 case SO_L2CAP_FLUSH: /* set flush timeout */ 2376 error = sooptcopyin(sopt, &v, sizeof(v), 2377 sizeof(v.flush_timo)); 2378 if (error == 0) 2379 pcb->flush_timo = v.flush_timo; 2380 break; 2381 case SO_L2CAP_ENCRYPTED: /*set connect encryption opt*/ 2382 if((pcb->state != NG_BTSOCKET_L2CAP_OPEN) && 2383 (pcb->state != NG_BTSOCKET_L2CAP_W4_ENC_CHANGE)){ 2384 error = sooptcopyin(sopt, &v, sizeof(v), 2385 sizeof(v.encryption)); 2386 if(error == 0) 2387 pcb->need_encrypt = (v.encryption)?1:0; 2388 }else{ 2389 error = EINVAL; 2390 } 2391 break; 2392 default: 2393 error = ENOPROTOOPT; 2394 break; 2395 } 2396 break; 2397 2398 default: 2399 error = EINVAL; 2400 break; 2401 } 2402 2403 mtx_unlock(&pcb->pcb_mtx); 2404 2405 return (error); 2406 } /* ng_btsocket_l2cap_ctloutput */ 2407 2408 /* 2409 * Detach and destroy socket 2410 */ 2411 2412 void 2413 ng_btsocket_l2cap_detach(struct socket *so) 2414 { 2415 ng_btsocket_l2cap_pcb_p pcb = so2l2cap_pcb(so); 2416 2417 KASSERT(pcb != NULL, ("ng_btsocket_l2cap_detach: pcb == NULL")); 2418 2419 if (ng_btsocket_l2cap_node == NULL) 2420 return; 2421 2422 mtx_lock(&ng_btsocket_l2cap_sockets_mtx); 2423 mtx_lock(&pcb->pcb_mtx); 2424 2425 /* XXX what to do with pending request? */ 2426 if (pcb->flags & NG_BTSOCKET_L2CAP_TIMO) 2427 ng_btsocket_l2cap_untimeout(pcb); 2428 2429 if (pcb->state != NG_BTSOCKET_L2CAP_CLOSED && 2430 pcb->state != NG_BTSOCKET_L2CAP_DISCONNECTING) 2431 /* Send disconnect request with "zero" token */ 2432 ng_btsocket_l2cap_send_l2ca_discon_req(0, pcb); 2433 2434 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 2435 2436 LIST_REMOVE(pcb, next); 2437 2438 mtx_unlock(&pcb->pcb_mtx); 2439 mtx_unlock(&ng_btsocket_l2cap_sockets_mtx); 2440 2441 mtx_destroy(&pcb->pcb_mtx); 2442 bzero(pcb, sizeof(*pcb)); 2443 free(pcb, M_NETGRAPH_BTSOCKET_L2CAP); 2444 2445 soisdisconnected(so); 2446 so->so_pcb = NULL; 2447 } /* ng_btsocket_l2cap_detach */ 2448 2449 /* 2450 * Disconnect socket 2451 */ 2452 2453 int 2454 ng_btsocket_l2cap_disconnect(struct socket *so) 2455 { 2456 ng_btsocket_l2cap_pcb_p pcb = so2l2cap_pcb(so); 2457 int error = 0; 2458 2459 if (pcb == NULL) 2460 return (EINVAL); 2461 if (ng_btsocket_l2cap_node == NULL) 2462 return (EINVAL); 2463 2464 mtx_lock(&pcb->pcb_mtx); 2465 2466 if (pcb->state == NG_BTSOCKET_L2CAP_DISCONNECTING) { 2467 mtx_unlock(&pcb->pcb_mtx); 2468 return (EINPROGRESS); 2469 } 2470 2471 if (pcb->state != NG_BTSOCKET_L2CAP_CLOSED) { 2472 /* XXX FIXME what to do with pending request? */ 2473 if (pcb->flags & NG_BTSOCKET_L2CAP_TIMO) 2474 ng_btsocket_l2cap_untimeout(pcb); 2475 2476 error = ng_btsocket_l2cap_send_l2ca_discon_req(pcb->token, pcb); 2477 if (error == 0) { 2478 pcb->state = NG_BTSOCKET_L2CAP_DISCONNECTING; 2479 soisdisconnecting(so); 2480 2481 ng_btsocket_l2cap_timeout(pcb); 2482 } 2483 2484 /* XXX FIXME what to do if error != 0 */ 2485 } 2486 2487 mtx_unlock(&pcb->pcb_mtx); 2488 2489 return (error); 2490 } /* ng_btsocket_l2cap_disconnect */ 2491 2492 /* 2493 * Listen on socket 2494 */ 2495 2496 int 2497 ng_btsocket_l2cap_listen(struct socket *so, int backlog, struct thread *td) 2498 { 2499 ng_btsocket_l2cap_pcb_p pcb = so2l2cap_pcb(so); 2500 int error; 2501 2502 SOCK_LOCK(so); 2503 error = solisten_proto_check(so); 2504 if (error != 0) 2505 goto out; 2506 if (pcb == NULL) { 2507 solisten_proto_abort(so); 2508 error = EINVAL; 2509 goto out; 2510 } 2511 if (ng_btsocket_l2cap_node == NULL) { 2512 solisten_proto_abort(so); 2513 error = EINVAL; 2514 goto out; 2515 } 2516 if (pcb->psm == 0) { 2517 solisten_proto_abort(so); 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 against 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 successfully 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 || !SOLISTENING(p->so) || p->psm != psm) 2738 continue; 2739 2740 if (bcmp(&p->src, bdaddr, sizeof(p->src)) == 0) 2741 break; 2742 2743 if (bcmp(&p->src, NG_HCI_BDADDR_ANY, sizeof(p->src)) == 0) 2744 p1 = p; 2745 } 2746 2747 return ((p != NULL)? p : p1); 2748 } /* ng_btsocket_l2cap_pcb_by_addr */ 2749 2750 /* 2751 * Look for the socket that has given token. 2752 * Caller must hold ng_btsocket_l2cap_sockets_mtx. 2753 */ 2754 2755 static ng_btsocket_l2cap_pcb_p 2756 ng_btsocket_l2cap_pcb_by_token(u_int32_t token) 2757 { 2758 ng_btsocket_l2cap_pcb_p p = NULL; 2759 2760 if (token == 0) 2761 return (NULL); 2762 2763 mtx_assert(&ng_btsocket_l2cap_sockets_mtx, MA_OWNED); 2764 2765 LIST_FOREACH(p, &ng_btsocket_l2cap_sockets, next) 2766 if (p->token == token) 2767 break; 2768 2769 return (p); 2770 } /* ng_btsocket_l2cap_pcb_by_token */ 2771 2772 /* 2773 * Look for the socket that assigned to given source address and channel ID. 2774 * Caller must hold ng_btsocket_l2cap_sockets_mtx 2775 */ 2776 2777 static ng_btsocket_l2cap_pcb_p 2778 ng_btsocket_l2cap_pcb_by_cid(bdaddr_p src, int cid, int idtype) 2779 { 2780 ng_btsocket_l2cap_pcb_p p = NULL; 2781 2782 mtx_assert(&ng_btsocket_l2cap_sockets_mtx, MA_OWNED); 2783 2784 LIST_FOREACH(p, &ng_btsocket_l2cap_sockets, next){ 2785 if (p->cid == cid && 2786 bcmp(src, &p->src, sizeof(p->src)) == 0&& 2787 p->idtype == idtype) 2788 break; 2789 } 2790 return (p); 2791 } /* ng_btsocket_l2cap_pcb_by_cid */ 2792 2793 /* 2794 * Set timeout on socket 2795 */ 2796 2797 static void 2798 ng_btsocket_l2cap_timeout(ng_btsocket_l2cap_pcb_p pcb) 2799 { 2800 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 2801 2802 if (!(pcb->flags & NG_BTSOCKET_L2CAP_TIMO)) { 2803 pcb->flags |= NG_BTSOCKET_L2CAP_TIMO; 2804 callout_reset(&pcb->timo, bluetooth_l2cap_ertx_timeout(), 2805 ng_btsocket_l2cap_process_timeout, pcb); 2806 } else 2807 KASSERT(0, 2808 ("%s: Duplicated socket timeout?!\n", __func__)); 2809 } /* ng_btsocket_l2cap_timeout */ 2810 2811 /* 2812 * Unset timeout on socket 2813 */ 2814 2815 static void 2816 ng_btsocket_l2cap_untimeout(ng_btsocket_l2cap_pcb_p pcb) 2817 { 2818 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 2819 2820 if (pcb->flags & NG_BTSOCKET_L2CAP_TIMO) { 2821 callout_stop(&pcb->timo); 2822 pcb->flags &= ~NG_BTSOCKET_L2CAP_TIMO; 2823 } else 2824 KASSERT(0, 2825 ("%s: No socket timeout?!\n", __func__)); 2826 } /* ng_btsocket_l2cap_untimeout */ 2827 2828 /* 2829 * Process timeout on socket 2830 */ 2831 2832 static void 2833 ng_btsocket_l2cap_process_timeout(void *xpcb) 2834 { 2835 ng_btsocket_l2cap_pcb_p pcb = (ng_btsocket_l2cap_pcb_p) xpcb; 2836 2837 mtx_assert(&pcb->pcb_mtx, MA_OWNED); 2838 2839 pcb->flags &= ~NG_BTSOCKET_L2CAP_TIMO; 2840 pcb->so->so_error = ETIMEDOUT; 2841 2842 switch (pcb->state) { 2843 case NG_BTSOCKET_L2CAP_CONNECTING: 2844 case NG_BTSOCKET_L2CAP_CONFIGURING: 2845 case NG_BTSOCKET_L2CAP_W4_ENC_CHANGE: 2846 /* Send disconnect request with "zero" token */ 2847 if (pcb->cid != 0) 2848 ng_btsocket_l2cap_send_l2ca_discon_req(0, pcb); 2849 2850 /* ... and close the socket */ 2851 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 2852 soisdisconnected(pcb->so); 2853 break; 2854 2855 case NG_BTSOCKET_L2CAP_OPEN: 2856 /* Send timeout - drop packet and wakeup sender */ 2857 sbdroprecord(&pcb->so->so_snd); 2858 sowwakeup(pcb->so); 2859 break; 2860 2861 case NG_BTSOCKET_L2CAP_DISCONNECTING: 2862 /* Disconnect timeout - disconnect the socket anyway */ 2863 pcb->state = NG_BTSOCKET_L2CAP_CLOSED; 2864 soisdisconnected(pcb->so); 2865 break; 2866 2867 default: 2868 NG_BTSOCKET_L2CAP_ERR( 2869 "%s: Invalid socket state=%d\n", __func__, pcb->state); 2870 break; 2871 } 2872 } /* ng_btsocket_l2cap_process_timeout */ 2873 2874 /* 2875 * Translate HCI/L2CAP error code into "errno" code 2876 * XXX Note: Some L2CAP and HCI error codes have the same value, but 2877 * different meaning 2878 */ 2879 2880 static int 2881 ng_btsocket_l2cap_result2errno(int result) 2882 { 2883 switch (result) { 2884 case 0x00: /* No error */ 2885 return (0); 2886 2887 case 0x01: /* Unknown HCI command */ 2888 return (ENODEV); 2889 2890 case 0x02: /* No connection */ 2891 return (ENOTCONN); 2892 2893 case 0x03: /* Hardware failure */ 2894 return (EIO); 2895 2896 case 0x04: /* Page timeout */ 2897 return (EHOSTDOWN); 2898 2899 case 0x05: /* Authentication failure */ 2900 case 0x06: /* Key missing */ 2901 case 0x18: /* Pairing not allowed */ 2902 case 0x21: /* Role change not allowed */ 2903 case 0x24: /* LMP PSU not allowed */ 2904 case 0x25: /* Encryption mode not acceptable */ 2905 case 0x26: /* Unit key used */ 2906 return (EACCES); 2907 2908 case 0x07: /* Memory full */ 2909 return (ENOMEM); 2910 2911 case 0x08: /* Connection timeout */ 2912 case 0x10: /* Host timeout */ 2913 case 0x22: /* LMP response timeout */ 2914 case 0xee: /* HCI timeout */ 2915 case 0xeeee: /* L2CAP timeout */ 2916 return (ETIMEDOUT); 2917 2918 case 0x09: /* Max number of connections */ 2919 case 0x0a: /* Max number of SCO connections to a unit */ 2920 return (EMLINK); 2921 2922 case 0x0b: /* ACL connection already exists */ 2923 return (EEXIST); 2924 2925 case 0x0c: /* Command disallowed */ 2926 return (EBUSY); 2927 2928 case 0x0d: /* Host rejected due to limited resources */ 2929 case 0x0e: /* Host rejected due to securiity reasons */ 2930 case 0x0f: /* Host rejected due to remote unit is a personal unit */ 2931 case 0x1b: /* SCO offset rejected */ 2932 case 0x1c: /* SCO interval rejected */ 2933 case 0x1d: /* SCO air mode rejected */ 2934 return (ECONNREFUSED); 2935 2936 case 0x11: /* Unsupported feature or parameter value */ 2937 case 0x19: /* Unknown LMP PDU */ 2938 case 0x1a: /* Unsupported remote feature */ 2939 case 0x20: /* Unsupported LMP parameter value */ 2940 case 0x27: /* QoS is not supported */ 2941 case 0x29: /* Paring with unit key not supported */ 2942 return (EOPNOTSUPP); 2943 2944 case 0x12: /* Invalid HCI command parameter */ 2945 case 0x1e: /* Invalid LMP parameters */ 2946 return (EINVAL); 2947 2948 case 0x13: /* Other end terminated connection: User ended connection */ 2949 case 0x14: /* Other end terminated connection: Low resources */ 2950 case 0x15: /* Other end terminated connection: About to power off */ 2951 return (ECONNRESET); 2952 2953 case 0x16: /* Connection terminated by local host */ 2954 return (ECONNABORTED); 2955 2956 #if 0 /* XXX not yet */ 2957 case 0x17: /* Repeated attempts */ 2958 case 0x1f: /* Unspecified error */ 2959 case 0x23: /* LMP error transaction collision */ 2960 case 0x28: /* Instant passed */ 2961 #endif 2962 } 2963 2964 return (ENOSYS); 2965 } /* ng_btsocket_l2cap_result2errno */ 2966