1 /****************************************************************************** 2 * 3 * Copyright (C) 2010-2014 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 LLCP entry points 22 * 23 ******************************************************************************/ 24 25 #include <string.h> 26 27 #include <android-base/stringprintf.h> 28 #include <base/logging.h> 29 30 #include "bt_types.h" 31 #include "gki.h" 32 #include "llcp_api.h" 33 #include "llcp_int.h" 34 #include "nfc_int.h" 35 36 using android::base::StringPrintf; 37 38 extern bool nfc_debug_enabled; 39 40 tLLCP_CB llcp_cb; 41 42 /******************************************************************************* 43 ** 44 ** Function llcp_init 45 ** 46 ** Description This function is called once at startup to initialize 47 ** all the LLCP structures 48 ** 49 ** Returns void 50 ** 51 *******************************************************************************/ 52 void llcp_init(void) { 53 uint32_t pool_count; 54 55 memset(&llcp_cb, 0, sizeof(tLLCP_CB)); 56 57 DLOG_IF(INFO, nfc_debug_enabled) << __func__; 58 59 llcp_cb.lcb.local_link_miu = 60 (LLCP_MIU <= LLCP_MAX_MIU ? LLCP_MIU : LLCP_MAX_MIU); 61 llcp_cb.lcb.local_opt = LLCP_OPT_VALUE; 62 llcp_cb.lcb.local_wt = LLCP_WAITING_TIME; 63 llcp_cb.lcb.local_lto = LLCP_LTO_VALUE; 64 65 llcp_cb.lcb.inact_timeout_init = LLCP_INIT_INACTIVITY_TIMEOUT; 66 llcp_cb.lcb.inact_timeout_target = LLCP_TARGET_INACTIVITY_TIMEOUT; 67 llcp_cb.lcb.symm_delay = LLCP_DELAY_RESP_TIME; 68 llcp_cb.lcb.data_link_timeout = LLCP_DATA_LINK_CONNECTION_TOUT; 69 llcp_cb.lcb.delay_first_pdu_timeout = LLCP_DELAY_TIME_TO_SEND_FIRST_PDU; 70 71 llcp_cb.lcb.wks = LLCP_WKS_MASK_LM; 72 73 /* total number of buffers for LLCP */ 74 pool_count = GKI_poolcount(LLCP_POOL_ID); 75 76 /* number of buffers for receiving data */ 77 llcp_cb.num_rx_buff = (pool_count * LLCP_RX_BUFF_RATIO) / 100; 78 79 /* rx congestion start/end threshold */ 80 llcp_cb.overall_rx_congest_start = 81 (uint8_t)((llcp_cb.num_rx_buff * LLCP_RX_CONGEST_START) / 100); 82 llcp_cb.overall_rx_congest_end = 83 (uint8_t)((llcp_cb.num_rx_buff * LLCP_RX_CONGEST_END) / 100); 84 85 /* max number of buffers for receiving data on logical data link */ 86 llcp_cb.max_num_ll_rx_buff = 87 (uint8_t)((llcp_cb.num_rx_buff * LLCP_LL_RX_BUFF_LIMIT) / 100); 88 89 DLOG_IF(INFO, nfc_debug_enabled) << StringPrintf( 90 "num_rx_buff = %d, rx_congest_start = %d, rx_congest_end = %d, " 91 "max_num_ll_rx_buff = %d", 92 llcp_cb.num_rx_buff, llcp_cb.overall_rx_congest_start, 93 llcp_cb.overall_rx_congest_end, llcp_cb.max_num_ll_rx_buff); 94 95 /* max number of buffers for transmitting data */ 96 llcp_cb.max_num_tx_buff = (uint8_t)(pool_count - llcp_cb.num_rx_buff); 97 98 /* max number of buffers for transmitting data on logical data link */ 99 llcp_cb.max_num_ll_tx_buff = 100 (uint8_t)((llcp_cb.max_num_tx_buff * LLCP_LL_TX_BUFF_LIMIT) / 100); 101 102 DLOG_IF(INFO, nfc_debug_enabled) 103 << StringPrintf("max_num_tx_buff = %d, max_num_ll_tx_buff = %d", 104 llcp_cb.max_num_tx_buff, llcp_cb.max_num_ll_tx_buff); 105 106 llcp_cb.ll_tx_uncongest_ntf_start_sap = LLCP_SAP_SDP + 1; 107 108 LLCP_RegisterServer(LLCP_SAP_SDP, LLCP_LINK_TYPE_DATA_LINK_CONNECTION, 109 "urn:nfc:sn:sdp", llcp_sdp_proc_data); 110 } 111 112 /******************************************************************************* 113 ** 114 ** Function llcp_cleanup 115 ** 116 ** Description This function is called once at closing to clean up 117 ** 118 ** Returns void 119 ** 120 *******************************************************************************/ 121 void llcp_cleanup(void) { 122 uint8_t sap; 123 tLLCP_APP_CB* p_app_cb; 124 125 DLOG_IF(INFO, nfc_debug_enabled) << __func__; 126 127 for (sap = LLCP_SAP_SDP; sap < LLCP_NUM_SAPS; sap++) { 128 p_app_cb = llcp_util_get_app_cb(sap); 129 130 if ((p_app_cb) && (p_app_cb->p_app_cback)) { 131 LLCP_Deregister(sap); 132 } 133 } 134 135 nfc_stop_quick_timer(&llcp_cb.lcb.inact_timer); 136 nfc_stop_quick_timer(&llcp_cb.lcb.timer); 137 } 138 139 /******************************************************************************* 140 ** 141 ** Function llcp_process_timeout 142 ** 143 ** Description This function is called when an LLCP-related timeout occurs 144 ** 145 ** Returns void 146 ** 147 *******************************************************************************/ 148 void llcp_process_timeout(TIMER_LIST_ENT* p_tle) { 149 uint8_t reason; 150 151 DLOG_IF(INFO, nfc_debug_enabled) 152 << StringPrintf("llcp_process_timeout: event=%d", p_tle->event); 153 154 switch (p_tle->event) { 155 case NFC_TTYPE_LLCP_LINK_MANAGER: 156 /* Link timeout or Symm timeout */ 157 llcp_link_process_link_timeout(); 158 break; 159 160 case NFC_TTYPE_LLCP_LINK_INACT: 161 /* inactivity timeout */ 162 llcp_link_deactivate(LLCP_LINK_LOCAL_INITIATED); 163 break; 164 165 case NFC_TTYPE_LLCP_DATA_LINK: 166 reason = LLCP_SAP_DISCONNECT_REASON_TIMEOUT; 167 llcp_dlsm_execute((tLLCP_DLCB*)(p_tle->param), LLCP_DLC_EVENT_TIMEOUT, 168 &reason); 169 break; 170 171 case NFC_TTYPE_LLCP_DELAY_FIRST_PDU: 172 llcp_link_check_send_data(); 173 break; 174 175 default: 176 break; 177 } 178 } 179
