1 /****************************************************************************** 2 * 3 * Copyright (C) 2009-2012 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 is the implementation file for the MCAP Data Channel Action 22 * Functions. 23 * 24 ******************************************************************************/ 25 #include "bt_target.h" 26 #include "gki.h" 27 #include "mca_api.h" 28 #include "mca_int.h" 29 30 /******************************************************************************* 31 ** 32 ** Function mca_dcb_report_cong 33 ** 34 ** Description This function is called to report the congestion flag. 35 ** 36 ** Returns void. 37 ** 38 *******************************************************************************/ 39 void mca_dcb_report_cong (tMCA_DCB *p_dcb) 40 { 41 tMCA_CTRL evt_data; 42 43 evt_data.cong_chg.cong = p_dcb->cong; 44 evt_data.cong_chg.mdl = mca_dcb_to_hdl(p_dcb); 45 evt_data.cong_chg.mdl_id = p_dcb->mdl_id; 46 mca_ccb_report_event (p_dcb->p_ccb, MCA_CONG_CHG_EVT, &evt_data); 47 } 48 49 /******************************************************************************* 50 ** 51 ** Function mca_dcb_tc_open 52 ** 53 ** Description This function is called to report MCA_OPEN_IND_EVT or 54 ** MCA_OPEN_CFM_EVT event. 55 ** It also clears the congestion flag (dcb.cong). 56 ** 57 ** Returns void. 58 ** 59 *******************************************************************************/ 60 void mca_dcb_tc_open (tMCA_DCB *p_dcb, tMCA_DCB_EVT *p_data) 61 { 62 tMCA_CTRL evt_data; 63 tMCA_CCB *p_ccb = p_dcb->p_ccb; 64 UINT8 event = MCA_OPEN_IND_EVT; 65 66 if (p_data->open.param == MCA_INT) 67 event = MCA_OPEN_CFM_EVT; 68 p_dcb->cong = FALSE; 69 evt_data.open_cfm.mtu = p_data->open.peer_mtu; 70 evt_data.open_cfm.mdl_id = p_dcb->mdl_id; 71 evt_data.open_cfm.mdl = mca_dcb_to_hdl(p_dcb); 72 mca_ccb_event (p_ccb, MCA_CCB_DL_OPEN_EVT, NULL); 73 mca_ccb_report_event (p_ccb, event, &evt_data); 74 } 75 76 /******************************************************************************* 77 ** 78 ** Function mca_dcb_cong 79 ** 80 ** Description This function sets the congestion state for the DCB. 81 ** 82 ** Returns void. 83 ** 84 *******************************************************************************/ 85 void mca_dcb_cong (tMCA_DCB *p_dcb, tMCA_DCB_EVT *p_data) 86 { 87 p_dcb->cong = p_data->llcong; 88 mca_dcb_report_cong(p_dcb); 89 } 90 91 /******************************************************************************* 92 ** 93 ** Function mca_dcb_free_data 94 ** 95 ** Description This function frees the received message. 96 ** 97 ** Returns void. 98 ** 99 *******************************************************************************/ 100 void mca_dcb_free_data (tMCA_DCB *p_dcb, tMCA_DCB_EVT *p_data) 101 { 102 GKI_freebuf (p_data); 103 } 104 105 /******************************************************************************* 106 ** 107 ** Function mca_dcb_do_disconn 108 ** 109 ** Description This function closes a data channel. 110 ** 111 ** Returns void. 112 ** 113 *******************************************************************************/ 114 void mca_dcb_do_disconn (tMCA_DCB *p_dcb, tMCA_DCB_EVT *p_data) 115 { 116 tMCA_CLOSE close; 117 if ((p_dcb->lcid == 0) || (L2CA_DisconnectReq(p_dcb->lcid) == FALSE)) 118 { 119 close.param = MCA_INT; 120 close.reason = L2CAP_DISC_OK; 121 close.lcid = 0; 122 mca_dcb_event(p_dcb, MCA_DCB_TC_CLOSE_EVT, (tMCA_DCB_EVT *) &close); 123 } 124 } 125 126 /******************************************************************************* 127 ** 128 ** Function mca_dcb_snd_data 129 ** 130 ** Description This function sends the data from application to the peer device. 131 ** 132 ** Returns void. 133 ** 134 *******************************************************************************/ 135 void mca_dcb_snd_data (tMCA_DCB *p_dcb, tMCA_DCB_EVT *p_data) 136 { 137 UINT8 status; 138 139 /* do not need to check cong, because API already checked the status */ 140 status = L2CA_DataWrite (p_dcb->lcid, p_data->p_pkt); 141 if (status == L2CAP_DW_CONGESTED) 142 { 143 p_dcb->cong = TRUE; 144 mca_dcb_report_cong(p_dcb); 145 } 146 } 147 148 /******************************************************************************* 149 ** 150 ** Function mca_dcb_hdl_data 151 ** 152 ** Description This function reports the received data through the data 153 ** callback function. 154 ** 155 ** Returns void. 156 ** 157 *******************************************************************************/ 158 void mca_dcb_hdl_data (tMCA_DCB *p_dcb, tMCA_DCB_EVT *p_data) 159 { 160 (*p_dcb->p_cs->p_data_cback) (mca_dcb_to_hdl(p_dcb), (BT_HDR *)p_data); 161 } 162 163
