The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Copyright (C) 1999-2012 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 state machine and action routines for multiplexer |
| 22 | * channel of the RFCOMM unit |
| 23 | * |
| 24 | ******************************************************************************/ |
| 25 | #include <string.h> |
| 26 | #include "gki.h" |
| 27 | #include "bt_types.h" |
| 28 | #include "rfcdefs.h" |
| 29 | #include "l2cdefs.h" |
| 30 | #include "port_api.h" |
| 31 | #include "port_int.h" |
| 32 | #include "l2c_api.h" |
| 33 | #include "rfc_int.h" |
Mike J. Chen | 5cd8bff | 2014-01-31 18:16:59 -0800 | [diff] [blame] | 34 | #include "bt_utils.h" |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 35 | |
| 36 | #define L2CAP_SUCCESS 0 |
| 37 | #define L2CAP_ERROR 1 |
| 38 | |
| 39 | |
| 40 | /********************************************************************************/ |
| 41 | /* L O C A L F U N C T I O N P R O T O T Y P E S */ |
| 42 | /********************************************************************************/ |
| 43 | static void rfc_mx_sm_state_idle (tRFC_MCB *p_mcb, UINT16 event, void *p_data); |
| 44 | static void rfc_mx_sm_state_wait_conn_cnf (tRFC_MCB *p_mcb, UINT16 event, void *p_data); |
| 45 | static void rfc_mx_sm_state_configure (tRFC_MCB *p_mcb, UINT16 event, void *p_data); |
| 46 | static void rfc_mx_sm_sabme_wait_ua (tRFC_MCB *p_mcb, UINT16 event, void *p_data); |
| 47 | static void rfc_mx_sm_state_wait_sabme (tRFC_MCB *p_mcb, UINT16 event, void *p_data); |
| 48 | static void rfc_mx_sm_state_connected (tRFC_MCB *p_mcb, UINT16 event, void *p_data); |
| 49 | static void rfc_mx_sm_state_disc_wait_ua (tRFC_MCB *p_mcb, UINT16 event, void *p_data); |
| 50 | |
| 51 | static void rfc_mx_send_config_req (tRFC_MCB *p_mcb); |
| 52 | static void rfc_mx_conf_ind (tRFC_MCB *p_mcb, tL2CAP_CFG_INFO *p_cfg); |
| 53 | static void rfc_mx_conf_cnf (tRFC_MCB *p_mcb, tL2CAP_CFG_INFO *p_cfg); |
| 54 | |
| 55 | |
| 56 | |
| 57 | /******************************************************************************* |
| 58 | ** |
| 59 | ** Function rfc_mx_sm_execute |
| 60 | ** |
| 61 | ** Description This function sends multiplexor events through the state |
| 62 | ** machine. |
| 63 | ** |
| 64 | ** Returns void |
| 65 | ** |
| 66 | *******************************************************************************/ |
| 67 | void rfc_mx_sm_execute (tRFC_MCB *p_mcb, UINT16 event, void *p_data) |
| 68 | { |
| 69 | switch (p_mcb->state) |
| 70 | { |
| 71 | case RFC_MX_STATE_IDLE: |
| 72 | rfc_mx_sm_state_idle (p_mcb, event, p_data); |
| 73 | break; |
| 74 | |
| 75 | case RFC_MX_STATE_WAIT_CONN_CNF: |
| 76 | rfc_mx_sm_state_wait_conn_cnf (p_mcb, event, p_data); |
| 77 | break; |
| 78 | |
| 79 | case RFC_MX_STATE_CONFIGURE: |
| 80 | rfc_mx_sm_state_configure (p_mcb, event, p_data); |
| 81 | break; |
| 82 | |
| 83 | case RFC_MX_STATE_SABME_WAIT_UA: |
| 84 | rfc_mx_sm_sabme_wait_ua (p_mcb, event, p_data); |
| 85 | break; |
| 86 | |
| 87 | case RFC_MX_STATE_WAIT_SABME: |
| 88 | rfc_mx_sm_state_wait_sabme (p_mcb, event, p_data); |
| 89 | break; |
| 90 | |
| 91 | case RFC_MX_STATE_CONNECTED: |
| 92 | rfc_mx_sm_state_connected (p_mcb, event, p_data); |
| 93 | break; |
| 94 | |
| 95 | case RFC_MX_STATE_DISC_WAIT_UA: |
| 96 | rfc_mx_sm_state_disc_wait_ua (p_mcb, event, p_data); |
| 97 | break; |
| 98 | |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | |
| 103 | /******************************************************************************* |
| 104 | ** |
| 105 | ** Function rfc_mx_sm_state_idle |
| 106 | ** |
| 107 | ** Description This function handles events when the multiplexer is in |
| 108 | ** IDLE state. This state exists when connection is being |
| 109 | ** initially established. |
| 110 | ** |
| 111 | ** Returns void |
| 112 | ** |
| 113 | *******************************************************************************/ |
| 114 | void rfc_mx_sm_state_idle (tRFC_MCB *p_mcb, UINT16 event, void *p_data) |
| 115 | { |
| 116 | RFCOMM_TRACE_EVENT1 ("rfc_mx_sm_state_idle - evt:%d", event); |
| 117 | switch (event) |
| 118 | { |
| 119 | case RFC_MX_EVENT_START_REQ: |
| 120 | |
| 121 | /* Initialize L2CAP MTU */ |
| 122 | p_mcb->peer_l2cap_mtu = L2CAP_DEFAULT_MTU - RFCOMM_MIN_OFFSET - 1; |
| 123 | |
| 124 | if ((p_mcb->lcid = L2CA_ConnectReq (BT_PSM_RFCOMM, p_mcb->bd_addr)) == 0) |
| 125 | { |
| 126 | PORT_StartCnf (p_mcb, RFCOMM_ERROR); |
| 127 | return; |
| 128 | } |
| 129 | /* Save entry for quicker access to mcb based on the LCID */ |
| 130 | rfc_save_lcid_mcb (p_mcb, p_mcb->lcid); |
| 131 | |
| 132 | p_mcb->state = RFC_MX_STATE_WAIT_CONN_CNF; |
| 133 | return; |
| 134 | |
| 135 | case RFC_MX_EVENT_START_RSP: |
| 136 | case RFC_MX_EVENT_CONN_CNF: |
| 137 | case RFC_MX_EVENT_CONF_IND: |
| 138 | case RFC_MX_EVENT_CONF_CNF: |
| 139 | RFCOMM_TRACE_ERROR2 ("Mx error state %d event %d", p_mcb->state, event); |
| 140 | return; |
| 141 | |
| 142 | case RFC_MX_EVENT_CONN_IND: |
| 143 | |
| 144 | rfc_timer_start (p_mcb, RFCOMM_CONN_TIMEOUT); |
| 145 | L2CA_ConnectRsp (p_mcb->bd_addr, *((UINT8 *)p_data), p_mcb->lcid, L2CAP_CONN_OK, 0); |
| 146 | |
| 147 | rfc_mx_send_config_req (p_mcb); |
| 148 | |
| 149 | p_mcb->state = RFC_MX_STATE_CONFIGURE; |
| 150 | return; |
| 151 | |
| 152 | case RFC_EVENT_SABME: |
| 153 | break; |
| 154 | |
| 155 | case RFC_EVENT_UA: |
| 156 | case RFC_EVENT_DM: |
| 157 | return; |
| 158 | |
| 159 | case RFC_EVENT_DISC: |
| 160 | rfc_send_dm (p_mcb, RFCOMM_MX_DLCI, TRUE); |
| 161 | return; |
| 162 | |
| 163 | case RFC_EVENT_UIH: |
| 164 | rfc_send_dm (p_mcb, RFCOMM_MX_DLCI, FALSE); |
| 165 | return; |
| 166 | } |
| 167 | RFCOMM_TRACE_EVENT2 ("RFCOMM MX ignored - evt:%d in state:%d", event, p_mcb->state); |
| 168 | } |
| 169 | |
| 170 | |
| 171 | /******************************************************************************* |
| 172 | ** |
| 173 | ** Function rfc_mx_sm_state_wait_conn_cnf |
| 174 | ** |
| 175 | ** Description This function handles events when the multiplexer is |
| 176 | ** waiting for Connection Confirm from L2CAP. |
| 177 | ** |
| 178 | ** Returns void |
| 179 | ** |
| 180 | *******************************************************************************/ |
| 181 | void rfc_mx_sm_state_wait_conn_cnf (tRFC_MCB *p_mcb, UINT16 event, void *p_data) |
| 182 | { |
| 183 | RFCOMM_TRACE_EVENT1 ("rfc_mx_sm_state_wait_conn_cnf - evt:%d", event); |
| 184 | switch (event) |
| 185 | { |
| 186 | case RFC_MX_EVENT_START_REQ: |
| 187 | RFCOMM_TRACE_ERROR2 ("Mx error state %d event %d", p_mcb->state, event); |
| 188 | return; |
| 189 | |
| 190 | /* There is some new timing so that Config Ind comes before security is completed |
| 191 | so we are still waiting fo the confirmation. */ |
| 192 | case RFC_MX_EVENT_CONF_IND: |
| 193 | rfc_mx_conf_ind (p_mcb, (tL2CAP_CFG_INFO *)p_data); |
| 194 | return; |
| 195 | |
| 196 | case RFC_MX_EVENT_CONN_CNF: |
| 197 | if (*((UINT16 *)p_data) != L2CAP_SUCCESS) |
| 198 | { |
| 199 | p_mcb->state = RFC_MX_STATE_IDLE; |
| 200 | |
| 201 | PORT_StartCnf (p_mcb, *((UINT16 *)p_data)); |
| 202 | return; |
| 203 | } |
| 204 | p_mcb->state = RFC_MX_STATE_CONFIGURE; |
| 205 | rfc_mx_send_config_req (p_mcb); |
| 206 | return; |
| 207 | |
| 208 | case RFC_MX_EVENT_DISC_IND: |
| 209 | p_mcb->state = RFC_MX_STATE_IDLE; |
| 210 | PORT_CloseInd (p_mcb); |
| 211 | return; |
| 212 | |
| 213 | case RFC_EVENT_TIMEOUT: |
| 214 | p_mcb->state = RFC_MX_STATE_IDLE; |
| 215 | L2CA_DisconnectReq (p_mcb->lcid); |
| 216 | |
| 217 | /* we gave up outgoing connection request then try peer's request */ |
| 218 | if (p_mcb->pending_lcid) |
| 219 | { |
| 220 | UINT16 i; |
| 221 | UINT8 idx; |
| 222 | |
| 223 | RFCOMM_TRACE_DEBUG2 ("RFCOMM MX retry as acceptor in collision case - evt:%d in state:%d", event, p_mcb->state); |
| 224 | |
| 225 | rfc_save_lcid_mcb (NULL, p_mcb->lcid); |
| 226 | p_mcb->lcid = p_mcb->pending_lcid; |
| 227 | rfc_save_lcid_mcb (p_mcb, p_mcb->lcid); |
| 228 | |
| 229 | p_mcb->is_initiator = FALSE; |
| 230 | |
| 231 | /* update direction bit */ |
| 232 | for (i = 0; i < RFCOMM_MAX_DLCI; i += 2) |
| 233 | { |
| 234 | if ((idx = p_mcb->port_inx[i]) != 0) |
| 235 | { |
| 236 | p_mcb->port_inx[i] = 0; |
| 237 | p_mcb->port_inx[i+1] = idx; |
| 238 | rfc_cb.port.port[idx - 1].dlci += 1; |
| 239 | RFCOMM_TRACE_DEBUG2 ("RFCOMM MX - DLCI:%d -> %d", i, rfc_cb.port.port[idx - 1].dlci); |
| 240 | } |
| 241 | } |
| 242 | |
| 243 | rfc_mx_sm_execute (p_mcb, RFC_MX_EVENT_CONN_IND, &(p_mcb->pending_id)); |
| 244 | } |
| 245 | else |
| 246 | { |
| 247 | PORT_CloseInd (p_mcb); |
| 248 | } |
| 249 | return; |
| 250 | } |
| 251 | RFCOMM_TRACE_EVENT2 ("RFCOMM MX ignored - evt:%d in state:%d", event, p_mcb->state); |
| 252 | } |
| 253 | |
| 254 | |
| 255 | /******************************************************************************* |
| 256 | ** |
| 257 | ** Function rfc_mx_sm_state_configure |
| 258 | ** |
| 259 | ** Description This function handles events when the multiplexer in the |
| 260 | ** configuration state. |
| 261 | ** |
| 262 | ** Returns void |
| 263 | ** |
| 264 | *******************************************************************************/ |
| 265 | void rfc_mx_sm_state_configure (tRFC_MCB *p_mcb, UINT16 event, void *p_data) |
| 266 | { |
| 267 | RFCOMM_TRACE_EVENT1 ("rfc_mx_sm_state_configure - evt:%d", event); |
| 268 | switch (event) |
| 269 | { |
| 270 | case RFC_MX_EVENT_START_REQ: |
| 271 | case RFC_MX_EVENT_CONN_CNF: |
| 272 | |
| 273 | RFCOMM_TRACE_ERROR2 ("Mx error state %d event %d", p_mcb->state, event); |
| 274 | return; |
| 275 | |
| 276 | case RFC_MX_EVENT_CONF_IND: |
| 277 | rfc_mx_conf_ind (p_mcb, (tL2CAP_CFG_INFO *)p_data); |
| 278 | return; |
| 279 | |
| 280 | case RFC_MX_EVENT_CONF_CNF: |
| 281 | rfc_mx_conf_cnf (p_mcb, (tL2CAP_CFG_INFO *)p_data); |
| 282 | return; |
| 283 | |
| 284 | case RFC_MX_EVENT_DISC_IND: |
| 285 | p_mcb->state = RFC_MX_STATE_IDLE; |
| 286 | PORT_CloseInd (p_mcb); |
| 287 | return; |
| 288 | |
| 289 | case RFC_EVENT_TIMEOUT: |
| 290 | p_mcb->state = RFC_MX_STATE_IDLE; |
| 291 | L2CA_DisconnectReq (p_mcb->lcid); |
| 292 | |
| 293 | PORT_StartCnf (p_mcb, RFCOMM_ERROR); |
| 294 | return; |
| 295 | } |
| 296 | RFCOMM_TRACE_EVENT2 ("RFCOMM MX ignored - evt:%d in state:%d", event, p_mcb->state); |
| 297 | } |
| 298 | |
| 299 | |
| 300 | /******************************************************************************* |
| 301 | ** |
| 302 | ** Function rfc_mx_sm_sabme_wait_ua |
| 303 | ** |
| 304 | ** Description This function handles events when the multiplexer sent |
| 305 | ** SABME and is waiting for UA reply. |
| 306 | ** |
| 307 | ** Returns void |
| 308 | ** |
| 309 | *******************************************************************************/ |
| 310 | void rfc_mx_sm_sabme_wait_ua (tRFC_MCB *p_mcb, UINT16 event, void *p_data) |
| 311 | { |
Mike J. Chen | 5cd8bff | 2014-01-31 18:16:59 -0800 | [diff] [blame] | 312 | UNUSED(p_data); |
| 313 | |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 314 | RFCOMM_TRACE_EVENT1 ("rfc_mx_sm_sabme_wait_ua - evt:%d", event); |
| 315 | switch (event) |
| 316 | { |
| 317 | case RFC_MX_EVENT_START_REQ: |
| 318 | case RFC_MX_EVENT_CONN_CNF: |
| 319 | RFCOMM_TRACE_ERROR2 ("Mx error state %d event %d", p_mcb->state, event); |
| 320 | return; |
| 321 | |
| 322 | /* workaround: we don't support reconfig */ |
| 323 | /* commented out until we support reconfig |
| 324 | case RFC_MX_EVENT_CONF_IND: |
| 325 | rfc_mx_conf_ind (p_mcb, (tL2CAP_CFG_INFO *)p_data); |
| 326 | return; |
| 327 | |
| 328 | case RFC_MX_EVENT_CONF_CNF: |
| 329 | rfc_mx_conf_cnf (p_mcb, (tL2CAP_CFG_INFO *)p_data); |
| 330 | return; |
| 331 | */ |
| 332 | |
| 333 | case RFC_MX_EVENT_DISC_IND: |
| 334 | p_mcb->state = RFC_MX_STATE_IDLE; |
| 335 | PORT_CloseInd (p_mcb); |
| 336 | return; |
| 337 | |
| 338 | case RFC_EVENT_UA: |
| 339 | rfc_timer_stop (p_mcb); |
| 340 | |
| 341 | p_mcb->state = RFC_MX_STATE_CONNECTED; |
| 342 | p_mcb->peer_ready = TRUE; |
| 343 | |
| 344 | PORT_StartCnf (p_mcb, RFCOMM_SUCCESS); |
| 345 | return; |
| 346 | |
| 347 | case RFC_EVENT_DM: |
| 348 | rfc_timer_stop (p_mcb); |
| 349 | /* Case falls through */ |
| 350 | |
| 351 | case RFC_MX_EVENT_CONF_IND: /* workaround: we don't support reconfig */ |
| 352 | case RFC_MX_EVENT_CONF_CNF: /* workaround: we don't support reconfig */ |
| 353 | case RFC_EVENT_TIMEOUT: |
| 354 | p_mcb->state = RFC_MX_STATE_IDLE; |
| 355 | L2CA_DisconnectReq (p_mcb->lcid); |
| 356 | |
| 357 | PORT_StartCnf (p_mcb, RFCOMM_ERROR); |
| 358 | return; |
| 359 | } |
| 360 | RFCOMM_TRACE_EVENT2 ("RFCOMM MX ignored - evt:%d in state:%d", event, p_mcb->state); |
| 361 | } |
| 362 | |
| 363 | /******************************************************************************* |
| 364 | ** |
| 365 | ** Function rfc_mx_sm_state_wait_sabme |
| 366 | ** |
| 367 | ** Description This function handles events when the multiplexer is |
| 368 | ** waiting for SABME on the acceptor side after configuration |
| 369 | ** |
| 370 | ** Returns void |
| 371 | ** |
| 372 | *******************************************************************************/ |
| 373 | void rfc_mx_sm_state_wait_sabme (tRFC_MCB *p_mcb, UINT16 event, void *p_data) |
| 374 | { |
| 375 | RFCOMM_TRACE_EVENT1 ("rfc_mx_sm_state_wait_sabme - evt:%d", event); |
| 376 | switch (event) |
| 377 | { |
| 378 | case RFC_MX_EVENT_DISC_IND: |
| 379 | p_mcb->state = RFC_MX_STATE_IDLE; |
| 380 | PORT_CloseInd (p_mcb); |
| 381 | return; |
| 382 | |
| 383 | case RFC_EVENT_SABME: |
| 384 | /* if we gave up outgoing connection request */ |
| 385 | if (p_mcb->pending_lcid) |
| 386 | { |
| 387 | p_mcb->pending_lcid = 0; |
| 388 | |
| 389 | rfc_send_ua (p_mcb, RFCOMM_MX_DLCI); |
| 390 | |
| 391 | rfc_timer_stop (p_mcb); |
| 392 | p_mcb->state = RFC_MX_STATE_CONNECTED; |
| 393 | p_mcb->peer_ready = TRUE; |
| 394 | |
| 395 | /* MX channel collision has been resolved, continue to open ports */ |
| 396 | PORT_StartCnf (p_mcb, RFCOMM_SUCCESS); |
| 397 | } |
| 398 | else |
| 399 | { |
| 400 | rfc_timer_stop (p_mcb); |
| 401 | PORT_StartInd (p_mcb); |
| 402 | } |
| 403 | return; |
| 404 | |
| 405 | case RFC_MX_EVENT_START_RSP: |
| 406 | if (*((UINT16 *)p_data) != RFCOMM_SUCCESS) |
| 407 | rfc_send_dm (p_mcb, RFCOMM_MX_DLCI, TRUE); |
| 408 | else |
| 409 | { |
| 410 | rfc_send_ua (p_mcb, RFCOMM_MX_DLCI); |
| 411 | |
| 412 | p_mcb->state = RFC_MX_STATE_CONNECTED; |
| 413 | p_mcb->peer_ready = TRUE; |
| 414 | } |
| 415 | return; |
| 416 | |
| 417 | case RFC_MX_EVENT_CONF_IND: /* workaround: we don't support reconfig */ |
| 418 | case RFC_MX_EVENT_CONF_CNF: /* workaround: we don't support reconfig */ |
| 419 | case RFC_EVENT_TIMEOUT: |
| 420 | p_mcb->state = RFC_MX_STATE_IDLE; |
| 421 | L2CA_DisconnectReq (p_mcb->lcid); |
| 422 | |
| 423 | PORT_CloseInd (p_mcb); |
| 424 | return; |
| 425 | } |
| 426 | RFCOMM_TRACE_EVENT2 ("RFCOMM MX ignored - evt:%d in state:%d", event, p_mcb->state); |
| 427 | } |
| 428 | |
| 429 | |
| 430 | /******************************************************************************* |
| 431 | ** |
| 432 | ** Function rfc_mx_sm_state_connected |
| 433 | ** |
| 434 | ** Description This function handles events when the multiplexer is |
| 435 | ** in the CONNECTED state |
| 436 | ** |
| 437 | ** Returns void |
| 438 | ** |
| 439 | *******************************************************************************/ |
| 440 | void rfc_mx_sm_state_connected (tRFC_MCB *p_mcb, UINT16 event, void *p_data) |
| 441 | { |
Mike J. Chen | 5cd8bff | 2014-01-31 18:16:59 -0800 | [diff] [blame] | 442 | UNUSED(p_data); |
| 443 | |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 444 | RFCOMM_TRACE_EVENT1 ("rfc_mx_sm_state_connected - evt:%d", event); |
| 445 | |
| 446 | switch (event) |
| 447 | { |
| 448 | case RFC_EVENT_TIMEOUT: |
| 449 | case RFC_MX_EVENT_CLOSE_REQ: |
| 450 | rfc_timer_start (p_mcb, RFC_DISC_TIMEOUT); |
| 451 | p_mcb->state = RFC_MX_STATE_DISC_WAIT_UA; |
| 452 | rfc_send_disc (p_mcb, RFCOMM_MX_DLCI); |
| 453 | return; |
| 454 | |
| 455 | case RFC_MX_EVENT_DISC_IND: |
| 456 | p_mcb->state = RFC_MX_STATE_IDLE; |
| 457 | PORT_CloseInd (p_mcb); |
| 458 | return; |
| 459 | |
| 460 | case RFC_EVENT_DISC: |
| 461 | /* Reply with UA. If initiator bring down L2CAP connection */ |
| 462 | /* If server wait for some time if client decide to reinitiate channel */ |
| 463 | rfc_send_ua (p_mcb, RFCOMM_MX_DLCI); |
| 464 | if (p_mcb->is_initiator) |
| 465 | { |
| 466 | L2CA_DisconnectReq (p_mcb->lcid); |
| 467 | } |
| 468 | /* notify all ports that connection is gone */ |
| 469 | PORT_CloseInd (p_mcb); |
| 470 | return; |
| 471 | } |
| 472 | RFCOMM_TRACE_EVENT2 ("RFCOMM MX ignored - evt:%d in state:%d", event, p_mcb->state); |
| 473 | } |
| 474 | |
| 475 | |
| 476 | /******************************************************************************* |
| 477 | ** |
| 478 | ** Function rfc_mx_sm_state_disc_wait_ua |
| 479 | ** |
| 480 | ** Description This function handles events when the multiplexer sent |
| 481 | ** DISC and is waiting for UA reply. |
| 482 | ** |
| 483 | ** Returns void |
| 484 | ** |
| 485 | *******************************************************************************/ |
| 486 | void rfc_mx_sm_state_disc_wait_ua (tRFC_MCB *p_mcb, UINT16 event, void *p_data) |
| 487 | { |
| 488 | BT_HDR *p_buf; |
| 489 | |
| 490 | RFCOMM_TRACE_EVENT1 ("rfc_mx_sm_state_disc_wait_ua - evt:%d", event); |
| 491 | switch (event) |
| 492 | { |
| 493 | case RFC_EVENT_UA: |
| 494 | case RFC_EVENT_DM: |
| 495 | case RFC_EVENT_TIMEOUT: |
| 496 | L2CA_DisconnectReq (p_mcb->lcid); |
| 497 | |
| 498 | if (p_mcb->restart_required) |
| 499 | { |
| 500 | /* Start Request was received while disconnecting. Execute it again */ |
| 501 | if ((p_mcb->lcid = L2CA_ConnectReq (BT_PSM_RFCOMM, p_mcb->bd_addr)) == 0) |
| 502 | { |
| 503 | PORT_StartCnf (p_mcb, RFCOMM_ERROR); |
| 504 | return; |
| 505 | } |
| 506 | /* Save entry for quicker access to mcb based on the LCID */ |
| 507 | rfc_save_lcid_mcb (p_mcb, p_mcb->lcid); |
| 508 | |
| 509 | /* clean up before reuse it */ |
| 510 | while ((p_buf = (BT_HDR *)GKI_dequeue(&p_mcb->cmd_q)) != NULL) |
| 511 | GKI_freebuf(p_buf); |
| 512 | |
| 513 | rfc_timer_start (p_mcb, RFC_MCB_INIT_INACT_TIMER); |
| 514 | |
| 515 | p_mcb->is_initiator = TRUE; |
| 516 | p_mcb->restart_required = FALSE; |
| 517 | p_mcb->local_cfg_sent = FALSE; |
| 518 | p_mcb->peer_cfg_rcvd = FALSE; |
| 519 | |
| 520 | p_mcb->state = RFC_MX_STATE_WAIT_CONN_CNF; |
| 521 | return; |
| 522 | } |
| 523 | rfc_release_multiplexer_channel (p_mcb); |
| 524 | return; |
| 525 | |
| 526 | case RFC_EVENT_DISC: |
| 527 | rfc_send_ua (p_mcb, RFCOMM_MX_DLCI); |
| 528 | return; |
| 529 | |
| 530 | case RFC_EVENT_UIH: |
| 531 | GKI_freebuf (p_data); |
| 532 | rfc_send_dm (p_mcb, RFCOMM_MX_DLCI, FALSE); |
| 533 | return; |
| 534 | |
| 535 | case RFC_MX_EVENT_START_REQ: |
| 536 | p_mcb->restart_required = TRUE; |
| 537 | return; |
| 538 | |
| 539 | case RFC_MX_EVENT_DISC_IND: |
| 540 | p_mcb->state = RFC_MX_STATE_IDLE; |
| 541 | PORT_CloseInd (p_mcb); |
| 542 | return; |
| 543 | |
| 544 | case RFC_MX_EVENT_CLOSE_REQ: |
| 545 | return; |
| 546 | |
| 547 | case RFC_MX_EVENT_QOS_VIOLATION_IND: |
| 548 | break; |
| 549 | } |
| 550 | RFCOMM_TRACE_EVENT2 ("RFCOMM MX ignored - evt:%d in state:%d", event, p_mcb->state); |
| 551 | } |
| 552 | |
| 553 | |
| 554 | /******************************************************************************* |
| 555 | ** |
| 556 | ** Function rfc_mx_send_config_req |
| 557 | ** |
| 558 | ** Description This function handles L2CA_ConnectInd message from the |
| 559 | ** L2CAP. Accept connection. |
| 560 | ** |
| 561 | *******************************************************************************/ |
| 562 | static void rfc_mx_send_config_req (tRFC_MCB *p_mcb) |
| 563 | { |
| 564 | tL2CAP_CFG_INFO cfg; |
| 565 | |
| 566 | RFCOMM_TRACE_EVENT0 ("rfc_mx_send_config_req"); |
| 567 | |
| 568 | memset (&cfg, 0, sizeof (tL2CAP_CFG_INFO)); |
| 569 | |
| 570 | cfg.mtu_present = TRUE; |
| 571 | cfg.mtu = L2CAP_MTU_SIZE; |
| 572 | |
| 573 | /* Defaults set by memset |
| 574 | cfg.flush_to_present = FALSE; |
| 575 | cfg.qos_present = FALSE; |
| 576 | cfg.fcr_present = FALSE; |
| 577 | cfg.fcr.mode = L2CAP_FCR_BASIC_MODE; |
| 578 | cfg.fcs_present = FALSE; |
| 579 | cfg.fcs = N/A when fcs_present is FALSE; |
| 580 | */ |
| 581 | L2CA_ConfigReq (p_mcb->lcid, &cfg); |
| 582 | } |
| 583 | |
| 584 | |
| 585 | /******************************************************************************* |
| 586 | ** |
| 587 | ** Function rfc_mx_conf_cnf |
| 588 | ** |
| 589 | ** Description This function handles L2CA_ConfigCnf message from the |
| 590 | ** L2CAP. If result is not success tell upper layer that |
| 591 | ** start has not been accepted. If initiator send SABME |
| 592 | ** on DLCI 0. T1 is still running. |
| 593 | ** |
| 594 | *******************************************************************************/ |
| 595 | static void rfc_mx_conf_cnf (tRFC_MCB *p_mcb, tL2CAP_CFG_INFO *p_cfg) |
| 596 | { |
| 597 | RFCOMM_TRACE_EVENT2 ("rfc_mx_conf_cnf p_cfg:%08x res:%d ", p_cfg, (p_cfg) ? p_cfg->result : 0); |
| 598 | |
| 599 | if (p_cfg->result != L2CAP_CFG_OK) |
| 600 | { |
| 601 | if (p_mcb->is_initiator) |
| 602 | { |
| 603 | PORT_StartCnf (p_mcb, p_cfg->result); |
| 604 | L2CA_DisconnectReq (p_mcb->lcid); |
| 605 | } |
| 606 | rfc_release_multiplexer_channel (p_mcb); |
| 607 | return; |
| 608 | } |
| 609 | |
| 610 | p_mcb->local_cfg_sent = TRUE; |
| 611 | if ((p_mcb->state == RFC_MX_STATE_CONFIGURE) && p_mcb->peer_cfg_rcvd) |
| 612 | { |
| 613 | if (p_mcb->is_initiator) |
| 614 | { |
| 615 | p_mcb->state = RFC_MX_STATE_SABME_WAIT_UA; |
| 616 | rfc_send_sabme (p_mcb, RFCOMM_MX_DLCI); |
| 617 | rfc_timer_start (p_mcb, RFC_T1_TIMEOUT); |
| 618 | } |
| 619 | else |
| 620 | { |
| 621 | p_mcb->state = RFC_MX_STATE_WAIT_SABME; |
kschulz | 5acd502 | 2013-11-05 14:37:02 +0100 | [diff] [blame] | 622 | rfc_timer_start (p_mcb, RFCOMM_CONN_TIMEOUT); /* - increased from T2=20 to CONN=120 |
| 623 | to allow the user more than 10 sec to type in the |
| 624 | pin which can be e.g. 16 digits */ |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 625 | } |
| 626 | } |
| 627 | } |
| 628 | |
| 629 | |
| 630 | /******************************************************************************* |
| 631 | ** |
| 632 | ** Function rfc_mx_conf_ind |
| 633 | ** |
| 634 | ** Description This function handles L2CA_ConfigInd message from the |
| 635 | ** L2CAP. Send the L2CA_ConfigRsp message. |
| 636 | ** |
| 637 | *******************************************************************************/ |
| 638 | static void rfc_mx_conf_ind (tRFC_MCB *p_mcb, tL2CAP_CFG_INFO *p_cfg) |
| 639 | { |
| 640 | /* Save peer L2CAP MTU if present */ |
| 641 | /* RFCOMM adds 3-4 bytes in the beginning and 1 bytes FCS */ |
| 642 | if (p_cfg->mtu_present) |
| 643 | p_mcb->peer_l2cap_mtu = p_cfg->mtu - RFCOMM_MIN_OFFSET - 1; |
| 644 | else |
| 645 | p_mcb->peer_l2cap_mtu = L2CAP_DEFAULT_MTU - RFCOMM_MIN_OFFSET - 1; |
| 646 | |
| 647 | p_cfg->mtu_present = FALSE; |
| 648 | p_cfg->flush_to_present = FALSE; |
| 649 | p_cfg->qos_present = FALSE; |
| 650 | |
| 651 | p_cfg->result = L2CAP_CFG_OK; |
| 652 | |
| 653 | L2CA_ConfigRsp (p_mcb->lcid, p_cfg); |
| 654 | |
| 655 | p_mcb->peer_cfg_rcvd = TRUE; |
| 656 | if ((p_mcb->state == RFC_MX_STATE_CONFIGURE) && p_mcb->local_cfg_sent) |
| 657 | { |
| 658 | if (p_mcb->is_initiator) |
| 659 | { |
| 660 | p_mcb->state = RFC_MX_STATE_SABME_WAIT_UA; |
| 661 | rfc_send_sabme (p_mcb, RFCOMM_MX_DLCI); |
| 662 | rfc_timer_start (p_mcb, RFC_T1_TIMEOUT); |
| 663 | } |
| 664 | else |
| 665 | { |
| 666 | p_mcb->state = RFC_MX_STATE_WAIT_SABME; |
kschulz | 5acd502 | 2013-11-05 14:37:02 +0100 | [diff] [blame] | 667 | rfc_timer_start (p_mcb, RFCOMM_CONN_TIMEOUT); /* - increased from T2=20 to CONN=120 |
| 668 | to allow the user more than 10 sec to type in the |
| 669 | pin which can be e.g. 16 digits */ |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 670 | } |
| 671 | } |
| 672 | } |