The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Copyright (C) 2003-2012 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 module contains action functions of the link control state machine. |
| 22 | * |
| 23 | ******************************************************************************/ |
| 24 | |
| 25 | #include <string.h> |
Chris Manton | 83e2c34 | 2014-09-29 21:37:44 -0700 | [diff] [blame] | 26 | #include "bt_types.h" |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 27 | #include "bt_target.h" |
Mike J. Chen | 5cd8bff | 2014-01-31 18:16:59 -0800 | [diff] [blame] | 28 | #include "bt_utils.h" |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 29 | #include "avct_api.h" |
| 30 | #include "avct_int.h" |
Pavlin Radoslavov | 258c253 | 2015-09-27 20:59:05 -0700 | [diff] [blame] | 31 | #include "bt_common.h" |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 32 | #include "btm_api.h" |
| 33 | |
| 34 | /* packet header length lookup table */ |
| 35 | const UINT8 avct_lcb_pkt_type_len[] = { |
| 36 | AVCT_HDR_LEN_SINGLE, |
| 37 | AVCT_HDR_LEN_START, |
| 38 | AVCT_HDR_LEN_CONT, |
| 39 | AVCT_HDR_LEN_END |
| 40 | }; |
| 41 | |
| 42 | /******************************************************************************* |
| 43 | ** |
| 44 | ** Function avct_lcb_msg_asmbl |
| 45 | ** |
| 46 | ** Description Reassemble incoming message. |
| 47 | ** |
| 48 | ** |
| 49 | ** Returns Pointer to reassembled message; NULL if no message |
| 50 | ** available. |
| 51 | ** |
| 52 | *******************************************************************************/ |
| 53 | static BT_HDR *avct_lcb_msg_asmbl(tAVCT_LCB *p_lcb, BT_HDR *p_buf) |
| 54 | { |
| 55 | UINT8 *p; |
| 56 | UINT8 pkt_type; |
| 57 | BT_HDR *p_ret; |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 58 | |
| 59 | /* parse the message header */ |
| 60 | p = (UINT8 *)(p_buf + 1) + p_buf->offset; |
| 61 | AVCT_PRS_PKT_TYPE(p, pkt_type); |
| 62 | |
| 63 | /* quick sanity check on length */ |
| 64 | if (p_buf->len < avct_lcb_pkt_type_len[pkt_type]) |
| 65 | { |
Pavlin Radoslavov | cceb430 | 2016-02-05 13:54:43 -0800 | [diff] [blame] | 66 | osi_free(p_buf); |
Sharvil Nanavati | 158084e | 2014-05-04 09:53:44 -0700 | [diff] [blame] | 67 | AVCT_TRACE_WARNING("Bad length during reassembly"); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 68 | p_ret = NULL; |
| 69 | } |
| 70 | /* single packet */ |
| 71 | else if (pkt_type == AVCT_PKT_TYPE_SINGLE) |
| 72 | { |
| 73 | /* if reassembly in progress drop message and process new single */ |
| 74 | if (p_lcb->p_rx_msg != NULL) |
Sharvil Nanavati | 158084e | 2014-05-04 09:53:44 -0700 | [diff] [blame] | 75 | AVCT_TRACE_WARNING("Got single during reassembly"); |
Pavlin Radoslavov | 0a20dd4 | 2016-02-04 18:20:06 -0800 | [diff] [blame] | 76 | |
Pavlin Radoslavov | cceb430 | 2016-02-05 13:54:43 -0800 | [diff] [blame] | 77 | osi_free_and_reset((void **)&p_lcb->p_rx_msg); |
Pavlin Radoslavov | 0a20dd4 | 2016-02-04 18:20:06 -0800 | [diff] [blame] | 78 | |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 79 | p_ret = p_buf; |
| 80 | } |
| 81 | /* start packet */ |
| 82 | else if (pkt_type == AVCT_PKT_TYPE_START) |
| 83 | { |
| 84 | /* if reassembly in progress drop message and process new start */ |
| 85 | if (p_lcb->p_rx_msg != NULL) |
Sharvil Nanavati | 158084e | 2014-05-04 09:53:44 -0700 | [diff] [blame] | 86 | AVCT_TRACE_WARNING("Got start during reassembly"); |
Pavlin Radoslavov | 20524d3 | 2016-02-02 18:12:08 -0800 | [diff] [blame] | 87 | |
Pavlin Radoslavov | cceb430 | 2016-02-05 13:54:43 -0800 | [diff] [blame] | 88 | osi_free(p_lcb->p_rx_msg); |
Pavlin Radoslavov | 20524d3 | 2016-02-02 18:12:08 -0800 | [diff] [blame] | 89 | |
Pavlin Radoslavov | 0a20dd4 | 2016-02-04 18:20:06 -0800 | [diff] [blame] | 90 | /* |
| 91 | * Allocate bigger buffer for reassembly. As lower layers are |
| 92 | * not aware of possible packet size after reassembly, they |
Mallikarjuna GB | 0d65d4c | 2013-11-10 13:30:25 +0530 | [diff] [blame] | 93 | * would have allocated smaller buffer. |
| 94 | */ |
Pavlin Radoslavov | cceb430 | 2016-02-05 13:54:43 -0800 | [diff] [blame] | 95 | p_lcb->p_rx_msg = (BT_HDR *)osi_malloc(BT_DEFAULT_BUFFER_SIZE); |
Pavlin Radoslavov | 0a20dd4 | 2016-02-04 18:20:06 -0800 | [diff] [blame] | 96 | memcpy(p_lcb->p_rx_msg, p_buf, |
| 97 | sizeof(BT_HDR) + p_buf->offset + p_buf->len); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 98 | |
Pavlin Radoslavov | 0a20dd4 | 2016-02-04 18:20:06 -0800 | [diff] [blame] | 99 | /* Free original buffer */ |
Pavlin Radoslavov | cceb430 | 2016-02-05 13:54:43 -0800 | [diff] [blame] | 100 | osi_free(p_buf); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 101 | |
Pavlin Radoslavov | 0a20dd4 | 2016-02-04 18:20:06 -0800 | [diff] [blame] | 102 | /* update p to point to new buffer */ |
| 103 | p = (UINT8 *)(p_lcb->p_rx_msg + 1) + p_lcb->p_rx_msg->offset; |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 104 | |
Pavlin Radoslavov | 0a20dd4 | 2016-02-04 18:20:06 -0800 | [diff] [blame] | 105 | /* copy first header byte over nosp */ |
| 106 | *(p + 1) = *p; |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 107 | |
Pavlin Radoslavov | 0a20dd4 | 2016-02-04 18:20:06 -0800 | [diff] [blame] | 108 | /* set offset to point to where to copy next */ |
| 109 | p_lcb->p_rx_msg->offset += p_lcb->p_rx_msg->len; |
| 110 | |
| 111 | /* adjust length for packet header */ |
| 112 | p_lcb->p_rx_msg->len -= 1; |
| 113 | |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 114 | p_ret = NULL; |
| 115 | } |
| 116 | /* continue or end */ |
| 117 | else |
| 118 | { |
| 119 | /* if no reassembly in progress drop message */ |
| 120 | if (p_lcb->p_rx_msg == NULL) |
| 121 | { |
Pavlin Radoslavov | cceb430 | 2016-02-05 13:54:43 -0800 | [diff] [blame] | 122 | osi_free(p_buf); |
Sharvil Nanavati | 158084e | 2014-05-04 09:53:44 -0700 | [diff] [blame] | 123 | AVCT_TRACE_WARNING("Pkt type=%d out of order", pkt_type); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 124 | p_ret = NULL; |
| 125 | } |
| 126 | else |
| 127 | { |
| 128 | /* get size of buffer holding assembled message */ |
Pavlin Radoslavov | 0a20dd4 | 2016-02-04 18:20:06 -0800 | [diff] [blame] | 129 | /* |
| 130 | * NOTE: The buffer is allocated above at the beginning of the |
| 131 | * reassembly, and is always of size BT_DEFAULT_BUFFER_SIZE. |
| 132 | */ |
| 133 | UINT16 buf_len = BT_DEFAULT_BUFFER_SIZE - sizeof(BT_HDR); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 134 | |
| 135 | /* adjust offset and len of fragment for header byte */ |
| 136 | p_buf->offset += AVCT_HDR_LEN_CONT; |
| 137 | p_buf->len -= AVCT_HDR_LEN_CONT; |
| 138 | |
| 139 | /* verify length */ |
Pavlin Radoslavov | 0a20dd4 | 2016-02-04 18:20:06 -0800 | [diff] [blame] | 140 | if ((p_lcb->p_rx_msg->offset + p_buf->len) > buf_len) { |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 141 | /* won't fit; free everything */ |
Pavlin Radoslavov | 0a20dd4 | 2016-02-04 18:20:06 -0800 | [diff] [blame] | 142 | AVCT_TRACE_WARNING("%s: Fragmented message too big!", __func__); |
Pavlin Radoslavov | cceb430 | 2016-02-05 13:54:43 -0800 | [diff] [blame] | 143 | osi_free_and_reset((void **)&p_lcb->p_rx_msg); |
| 144 | osi_free(p_buf); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 145 | p_ret = NULL; |
Pavlin Radoslavov | 0a20dd4 | 2016-02-04 18:20:06 -0800 | [diff] [blame] | 146 | } else { |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 147 | /* copy contents of p_buf to p_rx_msg */ |
| 148 | memcpy((UINT8 *)(p_lcb->p_rx_msg + 1) + p_lcb->p_rx_msg->offset, |
| 149 | (UINT8 *)(p_buf + 1) + p_buf->offset, p_buf->len); |
| 150 | |
| 151 | if (pkt_type == AVCT_PKT_TYPE_END) |
| 152 | { |
| 153 | p_lcb->p_rx_msg->offset -= p_lcb->p_rx_msg->len; |
| 154 | p_lcb->p_rx_msg->len += p_buf->len; |
| 155 | p_ret = p_lcb->p_rx_msg; |
| 156 | p_lcb->p_rx_msg = NULL; |
| 157 | } |
| 158 | else |
| 159 | { |
| 160 | p_lcb->p_rx_msg->offset += p_buf->len; |
| 161 | p_lcb->p_rx_msg->len += p_buf->len; |
| 162 | p_ret = NULL; |
| 163 | } |
Pavlin Radoslavov | cceb430 | 2016-02-05 13:54:43 -0800 | [diff] [blame] | 164 | osi_free(p_buf); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 165 | } |
| 166 | } |
| 167 | } |
| 168 | return p_ret; |
| 169 | } |
| 170 | |
| 171 | |
| 172 | /******************************************************************************* |
| 173 | ** |
| 174 | ** Function avct_lcb_chnl_open |
| 175 | ** |
| 176 | ** Description Open L2CAP channel to peer |
| 177 | ** |
| 178 | ** |
| 179 | ** Returns Nothing. |
| 180 | ** |
| 181 | *******************************************************************************/ |
| 182 | void avct_lcb_chnl_open(tAVCT_LCB *p_lcb, tAVCT_LCB_EVT *p_data) |
| 183 | { |
| 184 | UINT16 result = AVCT_RESULT_FAIL; |
Mike J. Chen | 5cd8bff | 2014-01-31 18:16:59 -0800 | [diff] [blame] | 185 | UNUSED(p_data); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 186 | |
| 187 | BTM_SetOutService(p_lcb->peer_addr, BTM_SEC_SERVICE_AVCTP, 0); |
| 188 | /* call l2cap connect req */ |
| 189 | p_lcb->ch_state = AVCT_CH_CONN; |
| 190 | if ((p_lcb->ch_lcid = L2CA_ConnectReq(AVCT_PSM, p_lcb->peer_addr)) == 0) |
| 191 | { |
| 192 | /* if connect req failed, send ourselves close event */ |
| 193 | avct_lcb_event(p_lcb, AVCT_LCB_LL_CLOSE_EVT, (tAVCT_LCB_EVT *) &result); |
| 194 | } |
| 195 | } |
| 196 | |
| 197 | /******************************************************************************* |
| 198 | ** |
| 199 | ** Function avct_lcb_unbind_disc |
| 200 | ** |
| 201 | ** Description Deallocate ccb and call callback with disconnect event. |
| 202 | ** |
| 203 | ** |
| 204 | ** Returns Nothing. |
| 205 | ** |
| 206 | *******************************************************************************/ |
| 207 | void avct_lcb_unbind_disc(tAVCT_LCB *p_lcb, tAVCT_LCB_EVT *p_data) |
| 208 | { |
Mike J. Chen | 5cd8bff | 2014-01-31 18:16:59 -0800 | [diff] [blame] | 209 | UNUSED(p_lcb); |
| 210 | |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 211 | avct_ccb_dealloc(p_data->p_ccb, AVCT_DISCONNECT_CFM_EVT, 0, NULL); |
| 212 | } |
| 213 | |
| 214 | /******************************************************************************* |
| 215 | ** |
| 216 | ** Function avct_lcb_open_ind |
| 217 | ** |
| 218 | ** Description Handle an LL_OPEN event. For each allocated ccb already |
| 219 | ** bound to this lcb, send a connect event. For each |
| 220 | ** unbound ccb with a new PID, bind that ccb to this lcb and |
| 221 | ** send a connect event. |
| 222 | ** |
| 223 | ** |
| 224 | ** Returns Nothing. |
| 225 | ** |
| 226 | *******************************************************************************/ |
| 227 | void avct_lcb_open_ind(tAVCT_LCB *p_lcb, tAVCT_LCB_EVT *p_data) |
| 228 | { |
| 229 | tAVCT_CCB *p_ccb = &avct_cb.ccb[0]; |
| 230 | int i; |
| 231 | BOOLEAN bind = FALSE; |
| 232 | |
| 233 | for (i = 0; i < AVCT_NUM_CONN; i++, p_ccb++) |
| 234 | { |
| 235 | /* if ccb allocated and */ |
| 236 | if (p_ccb->allocated) |
| 237 | { |
| 238 | /* if bound to this lcb send connect confirm event */ |
| 239 | if (p_ccb->p_lcb == p_lcb) |
| 240 | { |
| 241 | bind = TRUE; |
| 242 | L2CA_SetTxPriority(p_lcb->ch_lcid, L2CAP_CHNL_PRIORITY_HIGH); |
| 243 | p_ccb->cc.p_ctrl_cback(avct_ccb_to_idx(p_ccb), AVCT_CONNECT_CFM_EVT, |
| 244 | 0, p_lcb->peer_addr); |
| 245 | } |
| 246 | /* if unbound acceptor and lcb doesn't already have a ccb for this PID */ |
| 247 | else if ((p_ccb->p_lcb == NULL) && (p_ccb->cc.role == AVCT_ACP) && |
| 248 | (avct_lcb_has_pid(p_lcb, p_ccb->cc.pid) == NULL)) |
| 249 | { |
| 250 | /* bind ccb to lcb and send connect ind event */ |
| 251 | bind = TRUE; |
| 252 | p_ccb->p_lcb = p_lcb; |
| 253 | L2CA_SetTxPriority(p_lcb->ch_lcid, L2CAP_CHNL_PRIORITY_HIGH); |
| 254 | p_ccb->cc.p_ctrl_cback(avct_ccb_to_idx(p_ccb), AVCT_CONNECT_IND_EVT, |
| 255 | 0, p_lcb->peer_addr); |
| 256 | } |
| 257 | } |
| 258 | } |
| 259 | |
| 260 | /* if no ccbs bound to this lcb, disconnect */ |
| 261 | if (bind == FALSE) |
| 262 | { |
| 263 | avct_lcb_event(p_lcb, AVCT_LCB_INT_CLOSE_EVT, p_data); |
| 264 | } |
| 265 | } |
| 266 | |
| 267 | /******************************************************************************* |
| 268 | ** |
| 269 | ** Function avct_lcb_open_fail |
| 270 | ** |
| 271 | ** Description L2CAP channel open attempt failed. Deallocate any ccbs |
| 272 | ** on this lcb and send connect confirm event with failure. |
| 273 | ** |
| 274 | ** |
| 275 | ** Returns Nothing. |
| 276 | ** |
| 277 | *******************************************************************************/ |
| 278 | void avct_lcb_open_fail(tAVCT_LCB *p_lcb, tAVCT_LCB_EVT *p_data) |
| 279 | { |
| 280 | tAVCT_CCB *p_ccb = &avct_cb.ccb[0]; |
| 281 | int i; |
| 282 | |
| 283 | for (i = 0; i < AVCT_NUM_CONN; i++, p_ccb++) |
| 284 | { |
| 285 | if (p_ccb->allocated && (p_ccb->p_lcb == p_lcb)) |
| 286 | { |
| 287 | avct_ccb_dealloc(p_ccb, AVCT_CONNECT_CFM_EVT, |
| 288 | p_data->result, p_lcb->peer_addr); |
| 289 | } |
| 290 | } |
| 291 | } |
| 292 | |
| 293 | /******************************************************************************* |
| 294 | ** |
| 295 | ** Function avct_lcb_close_ind |
| 296 | ** |
| 297 | ** Description L2CAP channel closed by peer. Deallocate any initiator |
| 298 | ** ccbs on this lcb and send disconnect ind event. |
| 299 | ** |
| 300 | ** |
| 301 | ** Returns Nothing. |
| 302 | ** |
| 303 | *******************************************************************************/ |
| 304 | void avct_lcb_close_ind(tAVCT_LCB *p_lcb, tAVCT_LCB_EVT *p_data) |
| 305 | { |
| 306 | tAVCT_CCB *p_ccb = &avct_cb.ccb[0]; |
| 307 | int i; |
Mike J. Chen | 5cd8bff | 2014-01-31 18:16:59 -0800 | [diff] [blame] | 308 | UNUSED(p_data); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 309 | |
| 310 | for (i = 0; i < AVCT_NUM_CONN; i++, p_ccb++) |
| 311 | { |
| 312 | if (p_ccb->allocated && (p_ccb->p_lcb == p_lcb)) |
| 313 | { |
| 314 | if (p_ccb->cc.role == AVCT_INT) |
| 315 | { |
| 316 | avct_ccb_dealloc(p_ccb, AVCT_DISCONNECT_IND_EVT, |
| 317 | 0, p_lcb->peer_addr); |
| 318 | } |
| 319 | else |
| 320 | { |
| 321 | p_ccb->p_lcb = NULL; |
| 322 | (*p_ccb->cc.p_ctrl_cback)(avct_ccb_to_idx(p_ccb), AVCT_DISCONNECT_IND_EVT, |
| 323 | 0, p_lcb->peer_addr); |
| 324 | } |
| 325 | } |
| 326 | } |
| 327 | } |
| 328 | |
| 329 | /******************************************************************************* |
| 330 | ** |
| 331 | ** Function avct_lcb_close_cfm |
| 332 | ** |
| 333 | ** Description L2CAP channel closed by us. Deallocate any initiator |
| 334 | ** ccbs on this lcb and send disconnect ind or cfm event. |
| 335 | ** |
| 336 | ** |
| 337 | ** Returns Nothing. |
| 338 | ** |
| 339 | *******************************************************************************/ |
| 340 | void avct_lcb_close_cfm(tAVCT_LCB *p_lcb, tAVCT_LCB_EVT *p_data) |
| 341 | { |
| 342 | tAVCT_CCB *p_ccb = &avct_cb.ccb[0]; |
| 343 | int i; |
| 344 | UINT8 event; |
| 345 | |
| 346 | for (i = 0; i < AVCT_NUM_CONN; i++, p_ccb++) |
| 347 | { |
| 348 | if (p_ccb->allocated && (p_ccb->p_lcb == p_lcb)) |
| 349 | { |
| 350 | /* if this ccb initiated close send disconnect cfm otherwise ind */ |
| 351 | if (p_ccb->ch_close) |
| 352 | { |
| 353 | p_ccb->ch_close = FALSE; |
| 354 | event = AVCT_DISCONNECT_CFM_EVT; |
| 355 | } |
| 356 | else |
| 357 | { |
| 358 | event = AVCT_DISCONNECT_IND_EVT; |
| 359 | } |
| 360 | |
| 361 | if (p_ccb->cc.role == AVCT_INT) |
| 362 | { |
| 363 | avct_ccb_dealloc(p_ccb, event, p_data->result, p_lcb->peer_addr); |
| 364 | } |
| 365 | else |
| 366 | { |
| 367 | p_ccb->p_lcb = NULL; |
| 368 | (*p_ccb->cc.p_ctrl_cback)(avct_ccb_to_idx(p_ccb), event, |
| 369 | p_data->result, p_lcb->peer_addr); |
| 370 | } |
| 371 | } |
| 372 | } |
| 373 | } |
| 374 | |
| 375 | /******************************************************************************* |
| 376 | ** |
| 377 | ** Function avct_lcb_bind_conn |
| 378 | ** |
| 379 | ** Description Bind ccb to lcb and send connect cfm event. |
| 380 | ** |
| 381 | ** |
| 382 | ** Returns Nothing. |
| 383 | ** |
| 384 | *******************************************************************************/ |
| 385 | void avct_lcb_bind_conn(tAVCT_LCB *p_lcb, tAVCT_LCB_EVT *p_data) |
| 386 | { |
| 387 | p_data->p_ccb->p_lcb = p_lcb; |
| 388 | (*p_data->p_ccb->cc.p_ctrl_cback)(avct_ccb_to_idx(p_data->p_ccb), |
| 389 | AVCT_CONNECT_CFM_EVT, 0, p_lcb->peer_addr); |
| 390 | } |
| 391 | |
| 392 | /******************************************************************************* |
| 393 | ** |
| 394 | ** Function avct_lcb_chk_disc |
| 395 | ** |
| 396 | ** Description A ccb wants to close; if it is the last ccb on this lcb, |
| 397 | ** close channel. Otherwise just deallocate and call |
| 398 | ** callback. |
| 399 | ** |
| 400 | ** |
| 401 | ** Returns Nothing. |
| 402 | ** |
| 403 | *******************************************************************************/ |
| 404 | void avct_lcb_chk_disc(tAVCT_LCB *p_lcb, tAVCT_LCB_EVT *p_data) |
| 405 | { |
Sharvil Nanavati | 158084e | 2014-05-04 09:53:44 -0700 | [diff] [blame] | 406 | AVCT_TRACE_WARNING("avct_lcb_chk_disc"); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 407 | #if (AVCT_BROWSE_INCLUDED == TRUE) |
| 408 | avct_close_bcb(p_lcb, p_data); |
| 409 | #endif |
| 410 | if (avct_lcb_last_ccb(p_lcb, p_data->p_ccb)) |
| 411 | { |
Sharvil Nanavati | 158084e | 2014-05-04 09:53:44 -0700 | [diff] [blame] | 412 | AVCT_TRACE_WARNING("closing"); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 413 | p_data->p_ccb->ch_close = TRUE; |
| 414 | avct_lcb_event(p_lcb, AVCT_LCB_INT_CLOSE_EVT, p_data); |
| 415 | } |
| 416 | else |
| 417 | { |
Sharvil Nanavati | 158084e | 2014-05-04 09:53:44 -0700 | [diff] [blame] | 418 | AVCT_TRACE_WARNING("dealloc ccb"); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 419 | avct_lcb_unbind_disc(p_lcb, p_data); |
| 420 | } |
| 421 | } |
| 422 | |
| 423 | /******************************************************************************* |
| 424 | ** |
| 425 | ** Function avct_lcb_chnl_disc |
| 426 | ** |
| 427 | ** Description Disconnect L2CAP channel. |
| 428 | ** |
| 429 | ** |
| 430 | ** Returns Nothing. |
| 431 | ** |
| 432 | *******************************************************************************/ |
| 433 | void avct_lcb_chnl_disc(tAVCT_LCB *p_lcb, tAVCT_LCB_EVT *p_data) |
| 434 | { |
Mike J. Chen | 5cd8bff | 2014-01-31 18:16:59 -0800 | [diff] [blame] | 435 | UNUSED(p_data); |
| 436 | |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 437 | L2CA_DisconnectReq(p_lcb->ch_lcid); |
| 438 | } |
| 439 | |
| 440 | /******************************************************************************* |
| 441 | ** |
| 442 | ** Function avct_lcb_bind_fail |
| 443 | ** |
| 444 | ** Description Deallocate ccb and call callback with connect event |
| 445 | ** with failure result. |
| 446 | ** |
| 447 | ** |
| 448 | ** Returns Nothing. |
| 449 | ** |
| 450 | *******************************************************************************/ |
| 451 | void avct_lcb_bind_fail(tAVCT_LCB *p_lcb, tAVCT_LCB_EVT *p_data) |
| 452 | { |
Mike J. Chen | 5cd8bff | 2014-01-31 18:16:59 -0800 | [diff] [blame] | 453 | UNUSED(p_lcb); |
| 454 | |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 455 | avct_ccb_dealloc(p_data->p_ccb, AVCT_CONNECT_CFM_EVT, AVCT_RESULT_FAIL, NULL); |
| 456 | } |
| 457 | |
| 458 | /******************************************************************************* |
| 459 | ** |
| 460 | ** Function avct_lcb_cong_ind |
| 461 | ** |
| 462 | ** Description Handle congestion indication from L2CAP. |
| 463 | ** |
| 464 | ** |
| 465 | ** Returns Nothing. |
| 466 | ** |
| 467 | *******************************************************************************/ |
| 468 | void avct_lcb_cong_ind(tAVCT_LCB *p_lcb, tAVCT_LCB_EVT *p_data) |
| 469 | { |
| 470 | tAVCT_CCB *p_ccb = &avct_cb.ccb[0]; |
| 471 | int i; |
| 472 | UINT8 event; |
| 473 | BT_HDR *p_buf; |
| 474 | |
| 475 | /* set event */ |
| 476 | event = (p_data->cong) ? AVCT_CONG_IND_EVT : AVCT_UNCONG_IND_EVT; |
| 477 | p_lcb->cong = p_data->cong; |
Pavlin Radoslavov | 1a3844f | 2015-09-25 11:21:15 -0700 | [diff] [blame] | 478 | if (p_lcb->cong == FALSE && !fixed_queue_is_empty(p_lcb->tx_q)) |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 479 | { |
Pavlin Radoslavov | 1a3844f | 2015-09-25 11:21:15 -0700 | [diff] [blame] | 480 | while (!p_lcb->cong && |
| 481 | (p_buf = (BT_HDR *)fixed_queue_try_dequeue(p_lcb->tx_q)) != NULL) |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 482 | { |
| 483 | if (L2CA_DataWrite(p_lcb->ch_lcid, p_buf) == L2CAP_DW_CONGESTED) |
| 484 | { |
| 485 | p_lcb->cong = TRUE; |
| 486 | } |
| 487 | } |
| 488 | } |
| 489 | |
| 490 | /* send event to all ccbs on this lcb */ |
| 491 | for (i = 0; i < AVCT_NUM_CONN; i++, p_ccb++) |
| 492 | { |
| 493 | if (p_ccb->allocated && (p_ccb->p_lcb == p_lcb)) |
| 494 | { |
| 495 | (*p_ccb->cc.p_ctrl_cback)(avct_ccb_to_idx(p_ccb), event, 0, p_lcb->peer_addr); |
| 496 | } |
| 497 | } |
| 498 | } |
| 499 | |
| 500 | /******************************************************************************* |
| 501 | ** |
| 502 | ** Function avct_lcb_discard_msg |
| 503 | ** |
| 504 | ** Description Discard a message sent in from the API. |
| 505 | ** |
| 506 | ** |
| 507 | ** Returns Nothing. |
| 508 | ** |
| 509 | *******************************************************************************/ |
| 510 | void avct_lcb_discard_msg(tAVCT_LCB *p_lcb, tAVCT_LCB_EVT *p_data) |
| 511 | { |
Mike J. Chen | 5cd8bff | 2014-01-31 18:16:59 -0800 | [diff] [blame] | 512 | UNUSED(p_lcb); |
| 513 | |
Pavlin Radoslavov | 20524d3 | 2016-02-02 18:12:08 -0800 | [diff] [blame] | 514 | AVCT_TRACE_WARNING("Dropping message"); |
Pavlin Radoslavov | cceb430 | 2016-02-05 13:54:43 -0800 | [diff] [blame] | 515 | osi_free_and_reset((void **)&p_data->ul_msg.p_buf); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 516 | } |
| 517 | |
| 518 | /******************************************************************************* |
| 519 | ** |
| 520 | ** Function avct_lcb_send_msg |
| 521 | ** |
| 522 | ** Description Build and send an AVCTP message. |
| 523 | ** |
| 524 | ** |
| 525 | ** Returns Nothing. |
| 526 | ** |
| 527 | *******************************************************************************/ |
| 528 | void avct_lcb_send_msg(tAVCT_LCB *p_lcb, tAVCT_LCB_EVT *p_data) |
| 529 | { |
| 530 | UINT16 curr_msg_len; |
| 531 | UINT8 pkt_type; |
| 532 | UINT8 hdr_len; |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 533 | UINT8 *p; |
| 534 | UINT8 nosp = 0; /* number of subsequent packets */ |
| 535 | UINT16 temp; |
| 536 | UINT16 buf_size = p_lcb->peer_mtu + L2CAP_MIN_OFFSET + BT_HDR_SIZE; |
| 537 | |
| 538 | |
| 539 | /* store msg len */ |
| 540 | curr_msg_len = p_data->ul_msg.p_buf->len; |
| 541 | |
| 542 | /* initialize packet type and other stuff */ |
| 543 | if (curr_msg_len <= (p_lcb->peer_mtu - AVCT_HDR_LEN_SINGLE)) |
| 544 | { |
| 545 | pkt_type = AVCT_PKT_TYPE_SINGLE; |
| 546 | } |
| 547 | else |
| 548 | { |
| 549 | pkt_type = AVCT_PKT_TYPE_START; |
| 550 | temp = (curr_msg_len + AVCT_HDR_LEN_START - p_lcb->peer_mtu); |
| 551 | nosp = temp / (p_lcb->peer_mtu - 1) + 1; |
| 552 | if ( (temp % (p_lcb->peer_mtu - 1)) != 0) |
| 553 | nosp++; |
| 554 | } |
| 555 | |
| 556 | /* while we haven't sent all packets */ |
Pavlin Radoslavov | 717a4a9 | 2016-02-06 08:36:06 -0800 | [diff] [blame^] | 557 | while (curr_msg_len != 0) { |
| 558 | BT_HDR *p_buf; |
| 559 | |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 560 | /* set header len */ |
| 561 | hdr_len = avct_lcb_pkt_type_len[pkt_type]; |
| 562 | |
| 563 | /* if remaining msg must be fragmented */ |
| 564 | if (p_data->ul_msg.p_buf->len > (p_lcb->peer_mtu - hdr_len)) |
| 565 | { |
| 566 | /* get a new buffer for fragment we are sending */ |
Pavlin Radoslavov | cceb430 | 2016-02-05 13:54:43 -0800 | [diff] [blame] | 567 | p_buf = (BT_HDR *)osi_malloc(buf_size); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 568 | |
| 569 | /* copy portion of data from current message to new buffer */ |
| 570 | p_buf->offset = L2CAP_MIN_OFFSET + hdr_len; |
| 571 | p_buf->len = p_lcb->peer_mtu - hdr_len; |
| 572 | |
| 573 | memcpy((UINT8 *)(p_buf + 1) + p_buf->offset, |
| 574 | (UINT8 *)(p_data->ul_msg.p_buf + 1) + p_data->ul_msg.p_buf->offset, p_buf->len); |
| 575 | |
| 576 | p_data->ul_msg.p_buf->offset += p_buf->len; |
| 577 | p_data->ul_msg.p_buf->len -= p_buf->len; |
| 578 | } |
| 579 | else |
| 580 | { |
| 581 | p_buf = p_data->ul_msg.p_buf; |
| 582 | } |
| 583 | |
| 584 | curr_msg_len -= p_buf->len; |
| 585 | |
| 586 | /* set up to build header */ |
| 587 | p_buf->len += hdr_len; |
| 588 | p_buf->offset -= hdr_len; |
| 589 | p = (UINT8 *)(p_buf + 1) + p_buf->offset; |
| 590 | |
| 591 | /* build header */ |
| 592 | AVCT_BLD_HDR(p, p_data->ul_msg.label, pkt_type, p_data->ul_msg.cr); |
| 593 | if (pkt_type == AVCT_PKT_TYPE_START) |
| 594 | { |
| 595 | UINT8_TO_STREAM(p, nosp); |
| 596 | } |
| 597 | if ((pkt_type == AVCT_PKT_TYPE_START) || (pkt_type == AVCT_PKT_TYPE_SINGLE)) |
| 598 | { |
| 599 | UINT16_TO_BE_STREAM(p, p_data->ul_msg.p_ccb->cc.pid); |
| 600 | } |
| 601 | |
| 602 | if (p_lcb->cong == TRUE) |
| 603 | { |
Pavlin Radoslavov | 1a3844f | 2015-09-25 11:21:15 -0700 | [diff] [blame] | 604 | fixed_queue_enqueue(p_lcb->tx_q, p_buf); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 605 | } |
| 606 | |
| 607 | /* send message to L2CAP */ |
| 608 | else |
| 609 | { |
| 610 | if (L2CA_DataWrite(p_lcb->ch_lcid, p_buf) == L2CAP_DW_CONGESTED) |
| 611 | { |
| 612 | p_lcb->cong = TRUE; |
| 613 | } |
| 614 | } |
| 615 | |
| 616 | /* update pkt type for next packet */ |
| 617 | if (curr_msg_len > (p_lcb->peer_mtu - AVCT_HDR_LEN_END)) |
| 618 | { |
| 619 | pkt_type = AVCT_PKT_TYPE_CONT; |
| 620 | } |
| 621 | else |
| 622 | { |
| 623 | pkt_type = AVCT_PKT_TYPE_END; |
| 624 | } |
| 625 | } |
Pavlin Radoslavov | 1a3844f | 2015-09-25 11:21:15 -0700 | [diff] [blame] | 626 | AVCT_TRACE_DEBUG ("avct_lcb_send_msg tx_q_count:%d", |
| 627 | fixed_queue_length(p_lcb->tx_q)); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 628 | return; |
| 629 | } |
| 630 | |
| 631 | /******************************************************************************* |
| 632 | ** |
| 633 | ** Function avct_lcb_free_msg_ind |
| 634 | ** |
| 635 | ** Description Discard an incoming AVCTP message. |
| 636 | ** |
| 637 | ** |
| 638 | ** Returns Nothing. |
| 639 | ** |
| 640 | *******************************************************************************/ |
| 641 | void avct_lcb_free_msg_ind(tAVCT_LCB *p_lcb, tAVCT_LCB_EVT *p_data) |
| 642 | { |
Mike J. Chen | 5cd8bff | 2014-01-31 18:16:59 -0800 | [diff] [blame] | 643 | UNUSED(p_lcb); |
| 644 | |
Pavlin Radoslavov | 20524d3 | 2016-02-02 18:12:08 -0800 | [diff] [blame] | 645 | if (p_data == NULL) |
| 646 | return; |
| 647 | |
Pavlin Radoslavov | cceb430 | 2016-02-05 13:54:43 -0800 | [diff] [blame] | 648 | osi_free_and_reset((void **)&p_data->p_buf); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 649 | } |
| 650 | |
| 651 | /******************************************************************************* |
| 652 | ** |
| 653 | ** Function avct_lcb_msg_ind |
| 654 | ** |
| 655 | ** Description Handle an incoming AVCTP message. |
| 656 | ** |
| 657 | ** |
| 658 | ** Returns Nothing. |
| 659 | ** |
| 660 | *******************************************************************************/ |
| 661 | void avct_lcb_msg_ind(tAVCT_LCB *p_lcb, tAVCT_LCB_EVT *p_data) |
| 662 | { |
| 663 | UINT8 *p; |
| 664 | UINT8 label, type, cr_ipid; |
| 665 | UINT16 pid; |
| 666 | tAVCT_CCB *p_ccb; |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 667 | |
| 668 | /* this p_buf is to be reported through p_msg_cback. The layer_specific |
| 669 | * needs to be set properly to indicate that it is received through |
| 670 | * control channel */ |
| 671 | p_data->p_buf->layer_specific = AVCT_DATA_CTRL; |
| 672 | |
| 673 | /* reassemble message; if no message available (we received a fragment) return */ |
| 674 | if ((p_data->p_buf = avct_lcb_msg_asmbl(p_lcb, p_data->p_buf)) == NULL) |
| 675 | { |
| 676 | return; |
| 677 | } |
| 678 | |
| 679 | p = (UINT8 *)(p_data->p_buf + 1) + p_data->p_buf->offset; |
| 680 | |
| 681 | /* parse header byte */ |
| 682 | AVCT_PRS_HDR(p, label, type, cr_ipid); |
Sharvil Nanavati | f1c764f | 2015-02-23 17:31:48 -0800 | [diff] [blame] | 683 | UNUSED(type); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 684 | |
| 685 | /* check for invalid cr_ipid */ |
| 686 | if (cr_ipid == AVCT_CR_IPID_INVALID) |
| 687 | { |
Sharvil Nanavati | 158084e | 2014-05-04 09:53:44 -0700 | [diff] [blame] | 688 | AVCT_TRACE_WARNING("Invalid cr_ipid", cr_ipid); |
Pavlin Radoslavov | cceb430 | 2016-02-05 13:54:43 -0800 | [diff] [blame] | 689 | osi_free_and_reset((void **)&p_data->p_buf); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 690 | return; |
| 691 | } |
| 692 | |
| 693 | /* parse and lookup PID */ |
| 694 | BE_STREAM_TO_UINT16(pid, p); |
| 695 | if ((p_ccb = avct_lcb_has_pid(p_lcb, pid)) != NULL) |
| 696 | { |
| 697 | /* PID found; send msg up, adjust bt hdr and call msg callback */ |
| 698 | p_data->p_buf->offset += AVCT_HDR_LEN_SINGLE; |
| 699 | p_data->p_buf->len -= AVCT_HDR_LEN_SINGLE; |
| 700 | (*p_ccb->cc.p_msg_cback)(avct_ccb_to_idx(p_ccb), label, cr_ipid, p_data->p_buf); |
| 701 | } |
| 702 | else |
| 703 | { |
| 704 | /* PID not found; drop message */ |
Sharvil Nanavati | 158084e | 2014-05-04 09:53:44 -0700 | [diff] [blame] | 705 | AVCT_TRACE_WARNING("No ccb for PID=%x", pid); |
Pavlin Radoslavov | cceb430 | 2016-02-05 13:54:43 -0800 | [diff] [blame] | 706 | osi_free_and_reset((void **)&p_data->p_buf); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 707 | |
| 708 | /* if command send reject */ |
| 709 | if (cr_ipid == AVCT_CMD) |
| 710 | { |
Pavlin Radoslavov | 717a4a9 | 2016-02-06 08:36:06 -0800 | [diff] [blame^] | 711 | BT_HDR *p_buf = (BT_HDR *)osi_malloc(AVCT_CMD_BUF_SIZE); |
| 712 | p_buf->len = AVCT_HDR_LEN_SINGLE; |
| 713 | p_buf->offset = AVCT_MSG_OFFSET - AVCT_HDR_LEN_SINGLE; |
| 714 | p = (UINT8 *)(p_buf + 1) + p_buf->offset; |
| 715 | AVCT_BLD_HDR(p, label, AVCT_PKT_TYPE_SINGLE, AVCT_REJ); |
| 716 | UINT16_TO_BE_STREAM(p, pid); |
| 717 | L2CA_DataWrite(p_lcb->ch_lcid, p_buf); |
The Android Open Source Project | 5738f83 | 2012-12-12 16:00:35 -0800 | [diff] [blame] | 718 | } |
| 719 | } |
| 720 | } |