1 /****************************************************************************** 2 * 3 * Copyright 2003-2016 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 interfaces which are internal to AVCTP. 22 * 23 ******************************************************************************/ 24 #ifndef AVCT_INT_H 25 #define AVCT_INT_H 26 27 #include "avct_api.h" 28 #include "avct_defs.h" 29 #include "bt_common.h" 30 #include "l2c_api.h" 31 #include "osi/include/fixed_queue.h" 32 33 /***************************************************************************** 34 * constants 35 ****************************************************************************/ 36 37 /* lcb state machine events */ 38 enum { 39 AVCT_LCB_UL_BIND_EVT, 40 AVCT_LCB_UL_UNBIND_EVT, 41 AVCT_LCB_UL_MSG_EVT, 42 AVCT_LCB_INT_CLOSE_EVT, 43 AVCT_LCB_LL_OPEN_EVT, 44 AVCT_LCB_LL_CLOSE_EVT, 45 AVCT_LCB_LL_MSG_EVT, 46 AVCT_LCB_LL_CONG_EVT 47 }; 48 49 /* "states" used for L2CAP channel */ 50 #define AVCT_CH_IDLE 0 /* No connection */ 51 #define AVCT_CH_CONN 1 /* Waiting for connection confirm */ 52 #define AVCT_CH_CFG 2 /* Waiting for configuration complete */ 53 #define AVCT_CH_OPEN 3 /* Channel opened */ 54 55 /* "no event" indicator used by ccb dealloc */ 56 #define AVCT_NO_EVT 0xFF 57 58 /***************************************************************************** 59 * data types 60 ****************************************************************************/ 61 /* sub control block type - common data members for tAVCT_LCB and tAVCT_BCB */ 62 typedef struct { 63 uint16_t peer_mtu; /* peer l2c mtu */ 64 uint16_t ch_result; /* L2CAP connection result value */ 65 uint16_t ch_lcid; /* L2CAP channel LCID */ 66 uint8_t allocated; /* 0, not allocated. index+1, otherwise. */ 67 uint8_t state; /* The state machine state */ 68 uint8_t ch_state; /* L2CAP channel state */ 69 uint8_t ch_flags; /* L2CAP configuration flags */ 70 } tAVCT_SCB; 71 72 /* link control block type */ 73 typedef struct { 74 uint16_t peer_mtu; /* peer l2c mtu */ 75 uint16_t ch_result; /* L2CAP connection result value */ 76 uint16_t ch_lcid; /* L2CAP channel LCID */ 77 uint8_t allocated; /* 0, not allocated. index+1, otherwise. */ 78 uint8_t state; /* The state machine state */ 79 uint8_t ch_state; /* L2CAP channel state */ 80 uint8_t ch_flags; /* L2CAP configuration flags */ 81 BT_HDR* p_rx_msg; /* Message being reassembled */ 82 uint16_t conflict_lcid; /* L2CAP channel LCID */ 83 RawAddress peer_addr; /* BD address of peer */ 84 fixed_queue_t* tx_q; /* Transmit data buffer queue */ 85 bool cong; /* true, if congested */ 86 } tAVCT_LCB; 87 88 /* browse control block type */ 89 typedef struct { 90 uint16_t peer_mtu; /* peer l2c mtu */ 91 uint16_t ch_result; /* L2CAP connection result value */ 92 uint16_t ch_lcid; /* L2CAP channel LCID */ 93 uint8_t allocated; /* 0, not allocated. index+1, otherwise. */ 94 uint8_t state; /* The state machine state */ 95 uint8_t ch_state; /* L2CAP channel state */ 96 uint8_t ch_flags; /* L2CAP configuration flags */ 97 BT_HDR* p_tx_msg; /* Message to be sent - in case the browsing channel is not 98 open when MsgReg is called */ 99 uint8_t ch_close; /* CCB index+1, if CCB initiated channel close */ 100 RawAddress peer_addr; /* BD address of peer */ 101 } tAVCT_BCB; 102 103 #define AVCT_ALOC_LCB 0x01 104 #define AVCT_ALOC_BCB 0x02 105 /* connection control block */ 106 typedef struct { 107 tAVCT_CC cc; /* parameters from connection creation */ 108 tAVCT_LCB* p_lcb; /* Associated LCB */ 109 tAVCT_BCB* p_bcb; /* associated BCB */ 110 bool ch_close; /* Whether CCB initiated channel close */ 111 uint8_t allocated; /* Whether LCB/BCB is allocated */ 112 } tAVCT_CCB; 113 114 /* data type associated with UL_MSG_EVT */ 115 typedef struct { 116 BT_HDR* p_buf; 117 tAVCT_CCB* p_ccb; 118 uint8_t label; 119 uint8_t cr; 120 } tAVCT_UL_MSG; 121 122 /* union associated with lcb state machine events */ 123 typedef union { 124 tAVCT_UL_MSG ul_msg; 125 BT_HDR* p_buf; 126 tAVCT_CCB* p_ccb; 127 uint16_t result; 128 bool cong; 129 uint8_t err_code; 130 } tAVCT_LCB_EVT; 131 132 /* Control block for AVCT */ 133 typedef struct { 134 tAVCT_LCB lcb[AVCT_NUM_LINKS]; /* link control blocks */ 135 tAVCT_BCB bcb[AVCT_NUM_LINKS]; /* browse control blocks */ 136 tAVCT_CCB ccb[AVCT_NUM_CONN]; /* connection control blocks */ 137 uint16_t mtu; /* our L2CAP MTU */ 138 uint16_t mtu_br; /* our L2CAP MTU for the Browsing channel */ 139 uint8_t trace_level; /* trace level */ 140 } tAVCT_CB; 141 142 /***************************************************************************** 143 * function declarations 144 ****************************************************************************/ 145 146 /* LCB function declarations */ 147 extern void avct_lcb_event(tAVCT_LCB* p_lcb, uint8_t event, 148 tAVCT_LCB_EVT* p_data); 149 extern void avct_bcb_event(tAVCT_BCB* p_bcb, uint8_t event, 150 tAVCT_LCB_EVT* p_data); 151 extern void avct_close_bcb(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data); 152 extern tAVCT_LCB* avct_lcb_by_bcb(tAVCT_BCB* p_bcb); 153 extern tAVCT_BCB* avct_bcb_by_lcb(tAVCT_LCB* p_lcb); 154 extern uint8_t avct_bcb_get_last_ccb_index(tAVCT_BCB* p_bcb, 155 tAVCT_CCB* p_ccb_last); 156 extern tAVCT_BCB* avct_bcb_by_lcid(uint16_t lcid); 157 extern tAVCT_LCB* avct_lcb_by_bd(const RawAddress& bd_addr); 158 extern tAVCT_LCB* avct_lcb_alloc(const RawAddress& bd_addr); 159 extern void avct_lcb_dealloc(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data); 160 extern tAVCT_LCB* avct_lcb_by_lcid(uint16_t lcid); 161 extern tAVCT_CCB* avct_lcb_has_pid(tAVCT_LCB* p_lcb, uint16_t pid); 162 extern bool avct_lcb_last_ccb(tAVCT_LCB* p_lcb, tAVCT_CCB* p_ccb_last); 163 164 /* LCB action functions */ 165 extern void avct_lcb_chnl_open(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data); 166 extern void avct_lcb_unbind_disc(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data); 167 extern void avct_lcb_open_ind(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data); 168 extern void avct_lcb_open_fail(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data); 169 extern void avct_lcb_close_ind(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data); 170 extern void avct_lcb_close_cfm(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data); 171 extern void avct_lcb_bind_conn(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data); 172 extern void avct_lcb_chk_disc(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data); 173 extern void avct_lcb_chnl_disc(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data); 174 extern void avct_lcb_bind_fail(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data); 175 extern void avct_lcb_cong_ind(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data); 176 extern void avct_lcb_discard_msg(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data); 177 extern void avct_lcb_send_msg(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data); 178 extern void avct_lcb_msg_ind(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data); 179 extern void avct_lcb_free_msg_ind(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data); 180 181 /* BCB action functions */ 182 typedef void (*tAVCT_BCB_ACTION)(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data); 183 extern void avct_bcb_chnl_open(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data); 184 extern void avct_bcb_unbind_disc(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data); 185 extern void avct_bcb_open_ind(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data); 186 extern void avct_bcb_open_fail(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data); 187 extern void avct_bcb_close_ind(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data); 188 extern void avct_bcb_close_cfm(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data); 189 extern void avct_bcb_bind_conn(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data); 190 extern void avct_bcb_chk_disc(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data); 191 extern void avct_bcb_chnl_disc(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data); 192 extern void avct_bcb_bind_fail(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data); 193 extern void avct_bcb_cong_ind(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data); 194 extern void avct_bcb_discard_msg(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data); 195 extern void avct_bcb_send_msg(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data); 196 extern void avct_bcb_msg_ind(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data); 197 extern void avct_bcb_free_msg_ind(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data); 198 199 extern void avct_bcb_dealloc(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data); 200 201 extern const tAVCT_BCB_ACTION avct_bcb_action[]; 202 extern const uint8_t avct_lcb_pkt_type_len[]; 203 extern const tL2CAP_FCR_OPTS avct_l2c_br_fcr_opts_def; 204 205 /* CCB function declarations */ 206 extern tAVCT_CCB* avct_ccb_alloc(tAVCT_CC* p_cc); 207 extern void avct_ccb_dealloc(tAVCT_CCB* p_ccb, uint8_t event, uint16_t result, 208 const RawAddress* bd_addr); 209 extern uint8_t avct_ccb_to_idx(tAVCT_CCB* p_ccb); 210 extern tAVCT_CCB* avct_ccb_by_idx(uint8_t idx); 211 212 /***************************************************************************** 213 * global data 214 ****************************************************************************/ 215 216 /* Main control block */ 217 extern tAVCT_CB avct_cb; 218 219 /* L2CAP callback registration structure */ 220 extern const tL2CAP_APPL_INFO avct_l2c_appl; 221 extern const tL2CAP_APPL_INFO avct_l2c_br_appl; 222 223 #endif /* AVCT_INT_H */ 224