1 /****************************************************************************** 2 * 3 * Copyright 2001-2012 Broadcom Corporation 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at: 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 ******************************************************************************/ 18 19 /****************************************************************************** 20 * 21 * this file contains the main BNEP functions 22 * 23 ******************************************************************************/ 24 25 #include <stdio.h> 26 #include <stdlib.h> 27 #include <string.h> 28 #include "bt_target.h" 29 30 #include "bt_common.h" 31 #include "bt_types.h" 32 #include "hcidefs.h" 33 #include "hcimsgs.h" 34 35 #include "l2c_api.h" 36 #include "l2cdefs.h" 37 #include "log/log.h" 38 39 #include "btm_api.h" 40 #include "btu.h" 41 42 #include "bnep_api.h" 43 #include "bnep_int.h" 44 #include "bt_utils.h" 45 46 #include "device/include/controller.h" 47 #include "osi/include/osi.h" 48 49 /******************************************************************************/ 50 /* G L O B A L B N E P D A T A */ 51 /******************************************************************************/ 52 tBNEP_CB bnep_cb; 53 54 const uint16_t bnep_frame_hdr_sizes[] = {14, 1, 2, 8, 8}; 55 56 /******************************************************************************/ 57 /* L O C A L F U N C T I O N P R O T O T Y P E S */ 58 /******************************************************************************/ 59 static void bnep_connect_ind(const RawAddress& bd_addr, uint16_t l2cap_cid, 60 uint16_t psm, uint8_t l2cap_id); 61 static void bnep_connect_cfm(uint16_t l2cap_cid, uint16_t result); 62 static void bnep_config_ind(uint16_t l2cap_cid, tL2CAP_CFG_INFO* p_cfg); 63 static void bnep_config_cfm(uint16_t l2cap_cid, tL2CAP_CFG_INFO* p_cfg); 64 static void bnep_disconnect_ind(uint16_t l2cap_cid, bool ack_needed); 65 static void bnep_disconnect_cfm(uint16_t l2cap_cid, uint16_t result); 66 static void bnep_data_ind(uint16_t l2cap_cid, BT_HDR* p_msg); 67 static void bnep_congestion_ind(uint16_t lcid, bool is_congested); 68 69 /******************************************************************************* 70 * 71 * Function bnep_register_with_l2cap 72 * 73 * Description This function registers BNEP PSM with L2CAP 74 * 75 * Returns void 76 * 77 ******************************************************************************/ 78 tBNEP_RESULT bnep_register_with_l2cap(void) { 79 /* Initialize the L2CAP configuration. We only care about MTU and flush */ 80 memset(&bnep_cb.l2cap_my_cfg, 0, sizeof(tL2CAP_CFG_INFO)); 81 82 bnep_cb.l2cap_my_cfg.mtu_present = true; 83 bnep_cb.l2cap_my_cfg.mtu = BNEP_MTU_SIZE; 84 bnep_cb.l2cap_my_cfg.flush_to_present = true; 85 bnep_cb.l2cap_my_cfg.flush_to = BNEP_FLUSH_TO; 86 87 bnep_cb.reg_info.pL2CA_ConnectInd_Cb = bnep_connect_ind; 88 bnep_cb.reg_info.pL2CA_ConnectCfm_Cb = bnep_connect_cfm; 89 bnep_cb.reg_info.pL2CA_ConfigInd_Cb = bnep_config_ind; 90 bnep_cb.reg_info.pL2CA_ConfigCfm_Cb = bnep_config_cfm; 91 bnep_cb.reg_info.pL2CA_DisconnectInd_Cb = bnep_disconnect_ind; 92 bnep_cb.reg_info.pL2CA_DisconnectCfm_Cb = bnep_disconnect_cfm; 93 bnep_cb.reg_info.pL2CA_DataInd_Cb = bnep_data_ind; 94 bnep_cb.reg_info.pL2CA_CongestionStatus_Cb = bnep_congestion_ind; 95 96 /* Now, register with L2CAP */ 97 if (!L2CA_Register(BT_PSM_BNEP, &bnep_cb.reg_info)) { 98 BNEP_TRACE_ERROR("BNEP - Registration failed"); 99 return BNEP_SECURITY_FAIL; 100 } 101 102 return BNEP_SUCCESS; 103 } 104 105 /******************************************************************************* 106 * 107 * Function bnep_connect_ind 108 * 109 * Description This function handles an inbound connection indication 110 * from L2CAP. This is the case where we are acting as a 111 * server. 112 * 113 * Returns void 114 * 115 ******************************************************************************/ 116 static void bnep_connect_ind(const RawAddress& bd_addr, uint16_t l2cap_cid, 117 UNUSED_ATTR uint16_t psm, uint8_t l2cap_id) { 118 tBNEP_CONN* p_bcb = bnepu_find_bcb_by_bd_addr(bd_addr); 119 120 /* If we are not acting as server, or already have a connection, or have */ 121 /* no more resources to handle the connection, reject the connection. */ 122 if (!(bnep_cb.profile_registered) || (p_bcb) || 123 ((p_bcb = bnepu_allocate_bcb(bd_addr)) == NULL)) { 124 L2CA_ConnectRsp(bd_addr, l2cap_id, l2cap_cid, L2CAP_CONN_NO_PSM, 0); 125 return; 126 } 127 128 /* Transition to the next appropriate state, waiting for config setup. */ 129 p_bcb->con_state = BNEP_STATE_CFG_SETUP; 130 131 /* Save the L2CAP Channel ID. */ 132 p_bcb->l2cap_cid = l2cap_cid; 133 134 /* Send response to the L2CAP layer. */ 135 L2CA_ConnectRsp(bd_addr, l2cap_id, l2cap_cid, L2CAP_CONN_OK, L2CAP_CONN_OK); 136 137 /* Send a Configuration Request. */ 138 L2CA_ConfigReq(l2cap_cid, &bnep_cb.l2cap_my_cfg); 139 140 /* Start timer waiting for config setup */ 141 alarm_set_on_mloop(p_bcb->conn_timer, BNEP_CONN_TIMEOUT_MS, 142 bnep_conn_timer_timeout, p_bcb); 143 144 BNEP_TRACE_EVENT("BNEP - Rcvd L2CAP conn ind, CID: 0x%x", p_bcb->l2cap_cid); 145 } 146 147 /******************************************************************************* 148 * 149 * Function bnep_connect_cfm 150 * 151 * Description This function handles the connect confirm events 152 * from L2CAP. This is the case when we are acting as a 153 * client and have sent a connect request. 154 * 155 * Returns void 156 * 157 ******************************************************************************/ 158 static void bnep_connect_cfm(uint16_t l2cap_cid, uint16_t result) { 159 tBNEP_CONN* p_bcb; 160 161 /* Find CCB based on CID */ 162 p_bcb = bnepu_find_bcb_by_cid(l2cap_cid); 163 if (p_bcb == NULL) { 164 BNEP_TRACE_WARNING("BNEP - Rcvd conn cnf for unknown CID 0x%x", l2cap_cid); 165 return; 166 } 167 168 /* If the connection response contains success status, then */ 169 /* Transition to the next state and startup the timer. */ 170 if ((result == L2CAP_CONN_OK) && 171 (p_bcb->con_state == BNEP_STATE_CONN_START)) { 172 p_bcb->con_state = BNEP_STATE_CFG_SETUP; 173 174 /* Send a Configuration Request. */ 175 L2CA_ConfigReq(l2cap_cid, &bnep_cb.l2cap_my_cfg); 176 177 /* Start timer waiting for config results */ 178 alarm_set_on_mloop(p_bcb->conn_timer, BNEP_CONN_TIMEOUT_MS, 179 bnep_conn_timer_timeout, p_bcb); 180 181 BNEP_TRACE_EVENT("BNEP - got conn cnf, sent cfg req, CID: 0x%x", 182 p_bcb->l2cap_cid); 183 } else { 184 BNEP_TRACE_WARNING("BNEP - Rcvd conn cnf with error: 0x%x CID 0x%x", 185 result, p_bcb->l2cap_cid); 186 187 /* Tell the upper layer, if he has a callback */ 188 if (bnep_cb.p_conn_state_cb && p_bcb->con_flags & BNEP_FLAGS_IS_ORIG) { 189 (*bnep_cb.p_conn_state_cb)(p_bcb->handle, p_bcb->rem_bda, 190 BNEP_CONN_FAILED, false); 191 } 192 193 bnepu_release_bcb(p_bcb); 194 } 195 } 196 197 /******************************************************************************* 198 * 199 * Function bnep_config_ind 200 * 201 * Description This function processes the L2CAP configuration indication 202 * event. 203 * 204 * Returns void 205 * 206 ******************************************************************************/ 207 static void bnep_config_ind(uint16_t l2cap_cid, tL2CAP_CFG_INFO* p_cfg) { 208 tBNEP_CONN* p_bcb; 209 uint16_t result, mtu = 0; 210 211 /* Find CCB based on CID */ 212 p_bcb = bnepu_find_bcb_by_cid(l2cap_cid); 213 if (p_bcb == NULL) { 214 BNEP_TRACE_WARNING("BNEP - Rcvd L2CAP cfg ind, unknown CID: 0x%x", 215 l2cap_cid); 216 return; 217 } 218 219 BNEP_TRACE_EVENT("BNEP - Rcvd cfg ind, CID: 0x%x", l2cap_cid); 220 221 /* Remember the remote MTU size */ 222 if ((!p_cfg->mtu_present) || (p_cfg->mtu < BNEP_MIN_MTU_SIZE)) { 223 mtu = p_cfg->mtu; 224 p_cfg->flush_to_present = false; 225 p_cfg->mtu_present = true; 226 p_cfg->mtu = BNEP_MIN_MTU_SIZE; 227 p_cfg->result = result = L2CAP_CFG_UNACCEPTABLE_PARAMS; 228 } else { 229 if (p_cfg->mtu > BNEP_MTU_SIZE) 230 p_bcb->rem_mtu_size = BNEP_MTU_SIZE; 231 else 232 p_bcb->rem_mtu_size = p_cfg->mtu; 233 234 /* For now, always accept configuration from the other side */ 235 p_cfg->flush_to_present = false; 236 p_cfg->mtu_present = false; 237 p_cfg->result = result = L2CAP_CFG_OK; 238 } 239 240 L2CA_ConfigRsp(l2cap_cid, p_cfg); 241 242 if (result != L2CAP_CFG_OK) { 243 BNEP_TRACE_EVENT("BNEP - Rcvd cfg ind with bad MTU %d, CID: 0x%x", mtu, 244 l2cap_cid); 245 return; 246 } 247 248 p_bcb->con_flags |= BNEP_FLAGS_HIS_CFG_DONE; 249 250 if (p_bcb->con_flags & BNEP_FLAGS_MY_CFG_DONE) { 251 p_bcb->con_state = BNEP_STATE_SEC_CHECKING; 252 253 /* Start timer waiting for setup or response */ 254 alarm_set_on_mloop(p_bcb->conn_timer, BNEP_HOST_TIMEOUT_MS, 255 bnep_conn_timer_timeout, p_bcb); 256 257 if (p_bcb->con_flags & BNEP_FLAGS_IS_ORIG) { 258 btm_sec_mx_access_request(p_bcb->rem_bda, BT_PSM_BNEP, true, 259 BTM_SEC_PROTO_BNEP, p_bcb->src_uuid.As32Bit(), 260 &bnep_sec_check_complete, p_bcb); 261 } 262 } 263 } 264 265 /******************************************************************************* 266 * 267 * Function bnep_config_cfm 268 * 269 * Description This function processes the L2CAP configuration confirmation 270 * event. 271 * 272 * Returns void 273 * 274 ******************************************************************************/ 275 static void bnep_config_cfm(uint16_t l2cap_cid, tL2CAP_CFG_INFO* p_cfg) { 276 tBNEP_CONN* p_bcb; 277 278 BNEP_TRACE_EVENT("BNEP - Rcvd cfg cfm, CID: 0x%x Result: %d", l2cap_cid, 279 p_cfg->result); 280 281 /* Find CCB based on CID */ 282 p_bcb = bnepu_find_bcb_by_cid(l2cap_cid); 283 if (p_bcb == NULL) { 284 BNEP_TRACE_WARNING("BNEP - Rcvd L2CAP cfg ind, unknown CID: 0x%x", 285 l2cap_cid); 286 return; 287 } 288 289 /* For now, always accept configuration from the other side */ 290 if (p_cfg->result == L2CAP_CFG_OK) { 291 p_bcb->con_flags |= BNEP_FLAGS_MY_CFG_DONE; 292 293 if (p_bcb->con_flags & BNEP_FLAGS_HIS_CFG_DONE) { 294 p_bcb->con_state = BNEP_STATE_SEC_CHECKING; 295 296 /* Start timer waiting for setup or response */ 297 alarm_set_on_mloop(p_bcb->conn_timer, BNEP_HOST_TIMEOUT_MS, 298 bnep_conn_timer_timeout, p_bcb); 299 300 if (p_bcb->con_flags & BNEP_FLAGS_IS_ORIG) { 301 btm_sec_mx_access_request(p_bcb->rem_bda, BT_PSM_BNEP, true, 302 BTM_SEC_PROTO_BNEP, p_bcb->src_uuid.As32Bit(), 303 &bnep_sec_check_complete, p_bcb); 304 } 305 } 306 } else { 307 /* Tell the upper layer, if he has a callback */ 308 if ((p_bcb->con_flags & BNEP_FLAGS_IS_ORIG) && (bnep_cb.p_conn_state_cb)) { 309 (*bnep_cb.p_conn_state_cb)(p_bcb->handle, p_bcb->rem_bda, 310 BNEP_CONN_FAILED_CFG, false); 311 } 312 313 L2CA_DisconnectReq(p_bcb->l2cap_cid); 314 315 bnepu_release_bcb(p_bcb); 316 } 317 } 318 319 /******************************************************************************* 320 * 321 * Function bnep_disconnect_ind 322 * 323 * Description This function handles a disconnect event from L2CAP. If 324 * requested to, we ack the disconnect before dropping the CCB 325 * 326 * Returns void 327 * 328 ******************************************************************************/ 329 static void bnep_disconnect_ind(uint16_t l2cap_cid, bool ack_needed) { 330 tBNEP_CONN* p_bcb; 331 332 if (ack_needed) L2CA_DisconnectRsp(l2cap_cid); 333 334 /* Find CCB based on CID */ 335 p_bcb = bnepu_find_bcb_by_cid(l2cap_cid); 336 if (p_bcb == NULL) { 337 BNEP_TRACE_WARNING("BNEP - Rcvd L2CAP disc, unknown CID: 0x%x", l2cap_cid); 338 return; 339 } 340 341 BNEP_TRACE_EVENT("BNEP - Rcvd L2CAP disc, CID: 0x%x", l2cap_cid); 342 343 /* Tell the user if he has a callback */ 344 if (p_bcb->con_state == BNEP_STATE_CONNECTED) { 345 if (bnep_cb.p_conn_state_cb) 346 (*bnep_cb.p_conn_state_cb)(p_bcb->handle, p_bcb->rem_bda, 347 BNEP_CONN_DISCONNECTED, false); 348 } else { 349 if ((bnep_cb.p_conn_state_cb) && 350 ((p_bcb->con_flags & BNEP_FLAGS_IS_ORIG) || 351 (p_bcb->con_flags & BNEP_FLAGS_CONN_COMPLETED))) 352 (*bnep_cb.p_conn_state_cb)(p_bcb->handle, p_bcb->rem_bda, 353 BNEP_CONN_FAILED, false); 354 } 355 356 bnepu_release_bcb(p_bcb); 357 } 358 359 /******************************************************************************* 360 * 361 * Function bnep_disconnect_cfm 362 * 363 * Description This function gets the disconnect confirm event from L2CAP 364 * 365 * Returns void 366 * 367 ******************************************************************************/ 368 static void bnep_disconnect_cfm(uint16_t l2cap_cid, uint16_t result) { 369 BNEP_TRACE_EVENT("BNEP - Rcvd L2CAP disc cfm, CID: 0x%x, Result 0x%x", 370 l2cap_cid, result); 371 } 372 373 /******************************************************************************* 374 * 375 * Function bnep_congestion_ind 376 * 377 * Description This is a callback function called by L2CAP when 378 * congestion status changes 379 * 380 ******************************************************************************/ 381 static void bnep_congestion_ind(uint16_t l2cap_cid, bool is_congested) { 382 tBNEP_CONN* p_bcb; 383 384 /* Find BCB based on CID */ 385 p_bcb = bnepu_find_bcb_by_cid(l2cap_cid); 386 if (p_bcb == NULL) { 387 BNEP_TRACE_WARNING("BNEP - Rcvd L2CAP cong, unknown CID: 0x%x", l2cap_cid); 388 return; 389 } 390 391 if (is_congested) { 392 p_bcb->con_flags |= BNEP_FLAGS_L2CAP_CONGESTED; 393 if (bnep_cb.p_tx_data_flow_cb) { 394 bnep_cb.p_tx_data_flow_cb(p_bcb->handle, BNEP_TX_FLOW_OFF); 395 } 396 } else { 397 p_bcb->con_flags &= ~BNEP_FLAGS_L2CAP_CONGESTED; 398 399 if (bnep_cb.p_tx_data_flow_cb) { 400 bnep_cb.p_tx_data_flow_cb(p_bcb->handle, BNEP_TX_FLOW_ON); 401 } 402 403 /* While not congested, send as many buffers as we can */ 404 while (!(p_bcb->con_flags & BNEP_FLAGS_L2CAP_CONGESTED)) { 405 BT_HDR* p_buf = (BT_HDR*)fixed_queue_try_dequeue(p_bcb->xmit_q); 406 407 if (!p_buf) break; 408 409 L2CA_DataWrite(l2cap_cid, p_buf); 410 } 411 } 412 } 413 414 /******************************************************************************* 415 * 416 * Function bnep_data_ind 417 * 418 * Description This function is called when data is received from L2CAP. 419 * if we are the originator of the connection, we are the SDP 420 * client, and the received message is queued for the client. 421 * 422 * If we are the destination of the connection, we are the SDP 423 * server, so the message is passed to the server processing 424 * function. 425 * 426 * Returns void 427 * 428 ******************************************************************************/ 429 static void bnep_data_ind(uint16_t l2cap_cid, BT_HDR* p_buf) { 430 tBNEP_CONN* p_bcb; 431 uint8_t* p = (uint8_t*)(p_buf + 1) + p_buf->offset; 432 uint16_t rem_len = p_buf->len; 433 if (rem_len == 0) { 434 android_errorWriteLog(0x534e4554, "78286118"); 435 osi_free(p_buf); 436 return; 437 } 438 uint8_t type, ctrl_type, ext_type = 0; 439 bool extension_present, fw_ext_present; 440 uint16_t protocol = 0; 441 442 /* Find CCB based on CID */ 443 p_bcb = bnepu_find_bcb_by_cid(l2cap_cid); 444 if (p_bcb == NULL) { 445 BNEP_TRACE_WARNING("BNEP - Rcvd L2CAP data, unknown CID: 0x%x", l2cap_cid); 446 osi_free(p_buf); 447 return; 448 } 449 450 /* Get the type and extension bits */ 451 type = *p++; 452 extension_present = type >> 7; 453 type &= 0x7f; 454 if (type >= sizeof(bnep_frame_hdr_sizes) / sizeof(bnep_frame_hdr_sizes[0])) { 455 BNEP_TRACE_EVENT("BNEP - rcvd frame, bad type: 0x%02x", type); 456 android_errorWriteLog(0x534e4554, "68818034"); 457 osi_free(p_buf); 458 return; 459 } 460 if ((rem_len <= bnep_frame_hdr_sizes[type]) || (rem_len > BNEP_MTU_SIZE)) { 461 BNEP_TRACE_EVENT("BNEP - rcvd frame, bad len: %d type: 0x%02x", p_buf->len, 462 type); 463 osi_free(p_buf); 464 return; 465 } 466 467 rem_len--; 468 469 if ((p_bcb->con_state != BNEP_STATE_CONNECTED) && 470 (!(p_bcb->con_flags & BNEP_FLAGS_CONN_COMPLETED)) && 471 (type != BNEP_FRAME_CONTROL)) { 472 BNEP_TRACE_WARNING( 473 "BNEP - Ignored L2CAP data while in state: %d, CID: 0x%x", 474 p_bcb->con_state, l2cap_cid); 475 476 if (extension_present) { 477 /* 478 ** When there is no connection if a data packet is received 479 ** with unknown control extension headers then those should be processed 480 ** according to complain/ignore law 481 */ 482 uint8_t ext, length; 483 uint16_t org_len, new_len; 484 /* parse the extension headers and process unknown control headers */ 485 org_len = rem_len; 486 do { 487 if (org_len < 2) { 488 android_errorWriteLog(0x534e4554, "67863755"); 489 break; 490 } 491 ext = *p++; 492 length = *p++; 493 494 new_len = (length + 2); 495 if (new_len > org_len) { 496 android_errorWriteLog(0x534e4554, "67863755"); 497 break; 498 } 499 500 if ((ext & 0x7F) == BNEP_EXTENSION_FILTER_CONTROL) { 501 if (length == 0) { 502 android_errorWriteLog(0x534e4554, "79164722"); 503 break; 504 } 505 if (*p > BNEP_FILTER_MULTI_ADDR_RESPONSE_MSG) { 506 bnep_send_command_not_understood(p_bcb, *p); 507 } 508 } 509 510 p += length; 511 512 org_len -= new_len; 513 } while (ext & 0x80); 514 } 515 osi_free(p_buf); 516 return; 517 } 518 519 if (type > BNEP_FRAME_COMPRESSED_ETHERNET_DEST_ONLY) { 520 BNEP_TRACE_EVENT("BNEP - rcvd frame, unknown type: 0x%02x", type); 521 osi_free(p_buf); 522 return; 523 } 524 525 BNEP_TRACE_DEBUG("BNEP - rcv frame, type: %d len: %d Ext: %d", type, 526 p_buf->len, extension_present); 527 528 /* Initialize addresses to 'not supplied' */ 529 const RawAddress *p_src_addr, *p_dst_addr; 530 p_src_addr = p_dst_addr = NULL; 531 532 switch (type) { 533 case BNEP_FRAME_GENERAL_ETHERNET: 534 p_dst_addr = (RawAddress*)p; 535 p += BD_ADDR_LEN; 536 p_src_addr = (RawAddress*)p; 537 p += BD_ADDR_LEN; 538 BE_STREAM_TO_UINT16(protocol, p); 539 rem_len -= 14; 540 break; 541 542 case BNEP_FRAME_CONTROL: 543 ctrl_type = *p; 544 p = bnep_process_control_packet(p_bcb, p, &rem_len, false); 545 546 if (ctrl_type == BNEP_SETUP_CONNECTION_REQUEST_MSG && 547 p_bcb->con_state != BNEP_STATE_CONNECTED && extension_present && p && 548 rem_len) { 549 osi_free(p_bcb->p_pending_data); 550 p_bcb->p_pending_data = (BT_HDR*)osi_malloc(rem_len + sizeof(BT_HDR)); 551 memcpy((uint8_t*)(p_bcb->p_pending_data + 1), p, rem_len); 552 p_bcb->p_pending_data->len = rem_len; 553 p_bcb->p_pending_data->offset = 0; 554 } else { 555 while (extension_present && p && rem_len) { 556 ext_type = *p++; 557 rem_len--; 558 extension_present = ext_type >> 7; 559 ext_type &= 0x7F; 560 561 /* if unknown extension present stop processing */ 562 if (ext_type != BNEP_EXTENSION_FILTER_CONTROL) break; 563 564 android_errorWriteLog(0x534e4554, "69271284"); 565 p = bnep_process_control_packet(p_bcb, p, &rem_len, true); 566 } 567 } 568 osi_free(p_buf); 569 return; 570 571 case BNEP_FRAME_COMPRESSED_ETHERNET: 572 BE_STREAM_TO_UINT16(protocol, p); 573 rem_len -= 2; 574 break; 575 576 case BNEP_FRAME_COMPRESSED_ETHERNET_SRC_ONLY: 577 p_src_addr = (RawAddress*)p; 578 p += BD_ADDR_LEN; 579 BE_STREAM_TO_UINT16(protocol, p); 580 rem_len -= 8; 581 break; 582 583 case BNEP_FRAME_COMPRESSED_ETHERNET_DEST_ONLY: 584 p_dst_addr = (RawAddress*)p; 585 p += BD_ADDR_LEN; 586 BE_STREAM_TO_UINT16(protocol, p); 587 rem_len -= 8; 588 break; 589 } 590 591 /* Process the header extension if there is one */ 592 while (extension_present && p && rem_len) { 593 ext_type = *p; 594 extension_present = ext_type >> 7; 595 ext_type &= 0x7F; 596 597 /* if unknown extension present stop processing */ 598 if (ext_type) { 599 BNEP_TRACE_EVENT("Data extension type 0x%x found", ext_type); 600 break; 601 } 602 603 p++; 604 rem_len--; 605 p = bnep_process_control_packet(p_bcb, p, &rem_len, true); 606 } 607 608 p_buf->offset += p_buf->len - rem_len; 609 p_buf->len = rem_len; 610 611 /* Always give the upper layer MAC addresses */ 612 if (!p_src_addr) p_src_addr = &p_bcb->rem_bda; 613 614 if (!p_dst_addr) p_dst_addr = controller_get_interface()->get_address(); 615 616 /* check whether there are any extensions to be forwarded */ 617 if (ext_type) 618 fw_ext_present = true; 619 else 620 fw_ext_present = false; 621 622 if (bnep_cb.p_data_buf_cb) { 623 (*bnep_cb.p_data_buf_cb)(p_bcb->handle, *p_src_addr, *p_dst_addr, protocol, 624 p_buf, fw_ext_present); 625 } else if (bnep_cb.p_data_ind_cb) { 626 (*bnep_cb.p_data_ind_cb)(p_bcb->handle, *p_src_addr, *p_dst_addr, protocol, 627 p, rem_len, fw_ext_present); 628 osi_free(p_buf); 629 } 630 } 631 632 /******************************************************************************* 633 * 634 * Function bnep_conn_timer_timeout 635 * 636 * Description This function processes a timeout. If it is a startup 637 * timeout, we check for reading our BD address. If it 638 * is an L2CAP timeout, we send a disconnect req to L2CAP. 639 * 640 * Returns void 641 * 642 ******************************************************************************/ 643 void bnep_conn_timer_timeout(void* data) { 644 tBNEP_CONN* p_bcb = (tBNEP_CONN*)data; 645 646 BNEP_TRACE_EVENT( 647 "BNEP - CCB timeout in state: %d CID: 0x%x flags %x, re_transmit %d", 648 p_bcb->con_state, p_bcb->l2cap_cid, p_bcb->con_flags, 649 p_bcb->re_transmits); 650 651 if (p_bcb->con_state == BNEP_STATE_CONN_SETUP) { 652 BNEP_TRACE_EVENT("BNEP - CCB timeout in state: %d CID: 0x%x", 653 p_bcb->con_state, p_bcb->l2cap_cid); 654 655 if (!(p_bcb->con_flags & BNEP_FLAGS_IS_ORIG)) { 656 L2CA_DisconnectReq(p_bcb->l2cap_cid); 657 658 bnepu_release_bcb(p_bcb); 659 return; 660 } 661 662 if (p_bcb->re_transmits++ != BNEP_MAX_RETRANSMITS) { 663 bnep_send_conn_req(p_bcb); 664 alarm_set_on_mloop(p_bcb->conn_timer, BNEP_CONN_TIMEOUT_MS, 665 bnep_conn_timer_timeout, p_bcb); 666 } else { 667 L2CA_DisconnectReq(p_bcb->l2cap_cid); 668 669 if ((p_bcb->con_flags & BNEP_FLAGS_IS_ORIG) && (bnep_cb.p_conn_state_cb)) 670 (*bnep_cb.p_conn_state_cb)(p_bcb->handle, p_bcb->rem_bda, 671 BNEP_CONN_FAILED, false); 672 673 bnepu_release_bcb(p_bcb); 674 return; 675 } 676 } else if (p_bcb->con_state != BNEP_STATE_CONNECTED) { 677 BNEP_TRACE_EVENT("BNEP - CCB timeout in state: %d CID: 0x%x", 678 p_bcb->con_state, p_bcb->l2cap_cid); 679 680 L2CA_DisconnectReq(p_bcb->l2cap_cid); 681 682 /* Tell the user if he has a callback */ 683 if ((p_bcb->con_flags & BNEP_FLAGS_IS_ORIG) && (bnep_cb.p_conn_state_cb)) 684 (*bnep_cb.p_conn_state_cb)(p_bcb->handle, p_bcb->rem_bda, 685 BNEP_CONN_FAILED, false); 686 687 bnepu_release_bcb(p_bcb); 688 } else if (p_bcb->con_flags & BNEP_FLAGS_FILTER_RESP_PEND) { 689 if (p_bcb->re_transmits++ != BNEP_MAX_RETRANSMITS) { 690 bnepu_send_peer_our_filters(p_bcb); 691 alarm_set_on_mloop(p_bcb->conn_timer, BNEP_FILTER_SET_TIMEOUT_MS, 692 bnep_conn_timer_timeout, p_bcb); 693 } else { 694 L2CA_DisconnectReq(p_bcb->l2cap_cid); 695 696 /* Tell the user if he has a callback */ 697 if (bnep_cb.p_conn_state_cb) 698 (*bnep_cb.p_conn_state_cb)(p_bcb->handle, p_bcb->rem_bda, 699 BNEP_SET_FILTER_FAIL, false); 700 701 bnepu_release_bcb(p_bcb); 702 return; 703 } 704 } else if (p_bcb->con_flags & BNEP_FLAGS_MULTI_RESP_PEND) { 705 if (p_bcb->re_transmits++ != BNEP_MAX_RETRANSMITS) { 706 bnepu_send_peer_our_multi_filters(p_bcb); 707 alarm_set_on_mloop(p_bcb->conn_timer, BNEP_FILTER_SET_TIMEOUT_MS, 708 bnep_conn_timer_timeout, p_bcb); 709 } else { 710 L2CA_DisconnectReq(p_bcb->l2cap_cid); 711 712 /* Tell the user if he has a callback */ 713 if (bnep_cb.p_conn_state_cb) 714 (*bnep_cb.p_conn_state_cb)(p_bcb->handle, p_bcb->rem_bda, 715 BNEP_SET_FILTER_FAIL, false); 716 717 bnepu_release_bcb(p_bcb); 718 return; 719 } 720 } 721 } 722 723 /******************************************************************************* 724 * 725 * Function bnep_connected 726 * 727 * Description This function is called when a connection is established 728 * (after config). 729 * 730 * Returns void 731 * 732 ******************************************************************************/ 733 void bnep_connected(tBNEP_CONN* p_bcb) { 734 bool is_role_change; 735 736 if (p_bcb->con_flags & BNEP_FLAGS_CONN_COMPLETED) 737 is_role_change = true; 738 else 739 is_role_change = false; 740 741 p_bcb->con_state = BNEP_STATE_CONNECTED; 742 p_bcb->con_flags |= BNEP_FLAGS_CONN_COMPLETED; 743 p_bcb->con_flags &= (~BNEP_FLAGS_SETUP_RCVD); 744 745 /* Ensure timer is stopped */ 746 alarm_cancel(p_bcb->conn_timer); 747 p_bcb->re_transmits = 0; 748 749 /* Tell the upper layer, if he has a callback */ 750 if (bnep_cb.p_conn_state_cb) 751 (*bnep_cb.p_conn_state_cb)(p_bcb->handle, p_bcb->rem_bda, BNEP_SUCCESS, 752 is_role_change); 753 } 754
