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 file contains interfaces which are internal to AVCTP. 22 * 23 ******************************************************************************/ 24 #ifndef AVCT_INT_H 25 #define AVCT_INT_H 26 27 #include "osi/include/fixed_queue.h" 28 #include "bt_common.h" 29 #include "avct_api.h" 30 #include "avct_defs.h" 31 #include "l2c_api.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 50 /* "states" used for L2CAP channel */ 51 #define AVCT_CH_IDLE 0 /* No connection */ 52 #define AVCT_CH_CONN 1 /* Waiting for connection confirm */ 53 #define AVCT_CH_CFG 2 /* Waiting for configuration complete */ 54 #define AVCT_CH_OPEN 3 /* Channel opened */ 55 56 /* "no event" indicator used by ccb dealloc */ 57 #define AVCT_NO_EVT 0xFF 58 59 /***************************************************************************** 60 ** data types 61 *****************************************************************************/ 62 /* sub control block type - common data members for tAVCT_LCB and tAVCT_BCB */ 63 typedef struct { 64 UINT16 peer_mtu; /* peer l2c mtu */ 65 UINT16 ch_result; /* L2CAP connection result value */ 66 UINT16 ch_lcid; /* L2CAP channel LCID */ 67 UINT8 allocated; /* 0, not allocated. index+1, otherwise. */ 68 UINT8 state; /* The state machine state */ 69 UINT8 ch_state; /* L2CAP channel state */ 70 UINT8 ch_flags; /* L2CAP configuration flags */ 71 } tAVCT_SCB; 72 73 /* link control block type */ 74 typedef struct { 75 UINT16 peer_mtu; /* peer l2c mtu */ 76 UINT16 ch_result; /* L2CAP connection result value */ 77 UINT16 ch_lcid; /* L2CAP channel LCID */ 78 UINT8 allocated; /* 0, not allocated. index+1, otherwise. */ 79 UINT8 state; /* The state machine state */ 80 UINT8 ch_state; /* L2CAP channel state */ 81 UINT8 ch_flags; /* L2CAP configuration flags */ 82 BT_HDR *p_rx_msg; /* Message being reassembled */ 83 UINT16 conflict_lcid; /* L2CAP channel LCID */ 84 BD_ADDR peer_addr; /* BD address of peer */ 85 fixed_queue_t *tx_q; /* Transmit data buffer queue */ 86 BOOLEAN cong; /* TRUE, if congested */ 87 } tAVCT_LCB; 88 89 /* browse control block type */ 90 typedef struct { 91 UINT16 peer_mtu; /* peer l2c mtu */ 92 UINT16 ch_result; /* L2CAP connection result value */ 93 UINT16 ch_lcid; /* L2CAP channel LCID */ 94 UINT8 allocated; /* 0, not allocated. index+1, otherwise. */ 95 UINT8 state; /* The state machine state */ 96 UINT8 ch_state; /* L2CAP channel state */ 97 UINT8 ch_flags; /* L2CAP configuration flags */ 98 BT_HDR *p_tx_msg; /* Message to be sent - in case the browsing channel is not open when MsgReg is called */ 99 UINT8 ch_close; /* CCB index+1, if CCB initiated channel close */ 100 } tAVCT_BCB; 101 102 #define AVCT_ALOC_LCB 0x01 103 #define AVCT_ALOC_BCB 0x02 104 /* connection control block */ 105 typedef struct { 106 tAVCT_CC cc; /* parameters from connection creation */ 107 tAVCT_LCB *p_lcb; /* Associated LCB */ 108 tAVCT_BCB *p_bcb; /* associated BCB */ 109 BOOLEAN ch_close; /* Whether CCB initiated channel close */ 110 UINT8 allocated; /* Whether LCB/BCB is allocated */ 111 } tAVCT_CCB; 112 113 /* data type associated with UL_MSG_EVT */ 114 typedef struct { 115 BT_HDR *p_buf; 116 tAVCT_CCB *p_ccb; 117 UINT8 label; 118 UINT8 cr; 119 } tAVCT_UL_MSG; 120 121 /* union associated with lcb state machine events */ 122 typedef union { 123 tAVCT_UL_MSG ul_msg; 124 BT_HDR *p_buf; 125 tAVCT_CCB *p_ccb; 126 UINT16 result; 127 BOOLEAN cong; 128 UINT8 err_code; 129 } tAVCT_LCB_EVT; 130 131 /* Control block for AVCT */ 132 typedef struct { 133 tAVCT_LCB lcb[AVCT_NUM_LINKS]; /* link control blocks */ 134 tAVCT_BCB bcb[AVCT_NUM_LINKS]; /* browse control blocks */ 135 tAVCT_CCB ccb[AVCT_NUM_CONN]; /* connection control blocks */ 136 UINT16 mtu; /* our L2CAP MTU */ 137 UINT16 mtu_br; /* our L2CAP MTU for the Browsing channel */ 138 UINT8 trace_level; /* trace level */ 139 } tAVCT_CB; 140 141 /***************************************************************************** 142 ** function declarations 143 *****************************************************************************/ 144 145 /* LCB function declarations */ 146 extern void avct_lcb_event(tAVCT_LCB *p_lcb, UINT8 event, tAVCT_LCB_EVT *p_data); 147 #if (AVCT_BROWSE_INCLUDED == TRUE) 148 extern void avct_bcb_event(tAVCT_BCB *p_bcb, UINT8 event, tAVCT_LCB_EVT *p_data); 149 extern void avct_close_bcb(tAVCT_LCB *p_lcb, tAVCT_LCB_EVT *p_data); 150 extern tAVCT_LCB *avct_lcb_by_bcb(tAVCT_BCB *p_bcb); 151 extern tAVCT_BCB *avct_bcb_by_lcb(tAVCT_LCB *p_lcb); 152 extern BOOLEAN avct_bcb_last_ccb(tAVCT_BCB *p_bcb, tAVCT_CCB *p_ccb_last); 153 extern tAVCT_BCB *avct_bcb_by_lcid(UINT16 lcid); 154 #endif 155 extern tAVCT_LCB *avct_lcb_by_bd(BD_ADDR bd_addr); 156 extern tAVCT_LCB *avct_lcb_alloc(BD_ADDR bd_addr); 157 extern void avct_lcb_dealloc(tAVCT_LCB *p_lcb, tAVCT_LCB_EVT *p_data); 158 extern tAVCT_LCB *avct_lcb_by_lcid(UINT16 lcid); 159 extern tAVCT_CCB *avct_lcb_has_pid(tAVCT_LCB *p_lcb, UINT16 pid); 160 extern BOOLEAN avct_lcb_last_ccb(tAVCT_LCB *p_lcb, tAVCT_CCB *p_ccb_last); 161 162 /* LCB action functions */ 163 extern void avct_lcb_chnl_open(tAVCT_LCB *p_lcb, tAVCT_LCB_EVT *p_data); 164 extern void avct_lcb_unbind_disc(tAVCT_LCB *p_lcb, tAVCT_LCB_EVT *p_data); 165 extern void avct_lcb_open_ind(tAVCT_LCB *p_lcb, tAVCT_LCB_EVT *p_data); 166 extern void avct_lcb_open_fail(tAVCT_LCB *p_lcb, tAVCT_LCB_EVT *p_data); 167 extern void avct_lcb_close_ind(tAVCT_LCB *p_lcb, tAVCT_LCB_EVT *p_data); 168 extern void avct_lcb_close_cfm(tAVCT_LCB *p_lcb, tAVCT_LCB_EVT *p_data); 169 extern void avct_lcb_bind_conn(tAVCT_LCB *p_lcb, tAVCT_LCB_EVT *p_data); 170 extern void avct_lcb_chk_disc(tAVCT_LCB *p_lcb, tAVCT_LCB_EVT *p_data); 171 extern void avct_lcb_chnl_disc(tAVCT_LCB *p_lcb, tAVCT_LCB_EVT *p_data); 172 extern void avct_lcb_bind_fail(tAVCT_LCB *p_lcb, tAVCT_LCB_EVT *p_data); 173 extern void avct_lcb_cong_ind(tAVCT_LCB *p_lcb, tAVCT_LCB_EVT *p_data); 174 extern void avct_lcb_discard_msg(tAVCT_LCB *p_lcb, tAVCT_LCB_EVT *p_data); 175 extern void avct_lcb_send_msg(tAVCT_LCB *p_lcb, tAVCT_LCB_EVT *p_data); 176 extern void avct_lcb_msg_ind(tAVCT_LCB *p_lcb, tAVCT_LCB_EVT *p_data); 177 extern void avct_lcb_free_msg_ind(tAVCT_LCB *p_lcb, tAVCT_LCB_EVT *p_data); 178 179 /* BCB action functions */ 180 #if (AVCT_BROWSE_INCLUDED == TRUE) 181 typedef void (*tAVCT_BCB_ACTION)(tAVCT_BCB *p_bcb, tAVCT_LCB_EVT *p_data); 182 extern void avct_bcb_chnl_open(tAVCT_BCB *p_bcb, tAVCT_LCB_EVT *p_data); 183 extern void avct_bcb_unbind_disc(tAVCT_BCB *p_bcb, tAVCT_LCB_EVT *p_data); 184 extern void avct_bcb_open_ind(tAVCT_BCB *p_bcb, tAVCT_LCB_EVT *p_data); 185 extern void avct_bcb_open_fail(tAVCT_BCB *p_bcb, tAVCT_LCB_EVT *p_data); 186 extern void avct_bcb_close_ind(tAVCT_BCB *p_bcb, tAVCT_LCB_EVT *p_data); 187 extern void avct_bcb_close_cfm(tAVCT_BCB *p_bcb, tAVCT_LCB_EVT *p_data); 188 extern void avct_bcb_bind_conn(tAVCT_BCB *p_bcb, tAVCT_LCB_EVT *p_data); 189 extern void avct_bcb_chk_disc(tAVCT_BCB *p_bcb, tAVCT_LCB_EVT *p_data); 190 extern void avct_bcb_chnl_disc(tAVCT_BCB *p_bcb, tAVCT_LCB_EVT *p_data); 191 extern void avct_bcb_bind_fail(tAVCT_BCB *p_bcb, tAVCT_LCB_EVT *p_data); 192 extern void avct_bcb_cong_ind(tAVCT_BCB *p_bcb, tAVCT_LCB_EVT *p_data); 193 extern void avct_bcb_discard_msg(tAVCT_BCB *p_bcb, tAVCT_LCB_EVT *p_data); 194 extern void avct_bcb_send_msg(tAVCT_BCB *p_bcb, tAVCT_LCB_EVT *p_data); 195 extern void avct_bcb_msg_ind(tAVCT_BCB *p_bcb, tAVCT_LCB_EVT *p_data); 196 extern void avct_bcb_free_msg_ind(tAVCT_BCB *p_bcb, tAVCT_LCB_EVT *p_data); 197 198 extern void avct_bcb_dealloc(tAVCT_BCB *p_bcb, tAVCT_LCB_EVT *p_data); 199 200 extern const tAVCT_BCB_ACTION avct_bcb_action[]; 201 extern const UINT8 avct_lcb_pkt_type_len[]; 202 extern const tL2CAP_FCR_OPTS avct_l2c_br_fcr_opts_def; 203 #endif 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 event, UINT16 result, BD_ADDR bd_addr); 208 extern UINT8 avct_ccb_to_idx(tAVCT_CCB *p_ccb); 209 extern tAVCT_CCB *avct_ccb_by_idx(UINT8 idx); 210 211 212 /***************************************************************************** 213 ** global data 214 *****************************************************************************/ 215 #ifdef __cplusplus 216 extern "C" 217 { 218 #endif 219 220 /* Main control block */ 221 #if AVCT_DYNAMIC_MEMORY == FALSE 222 extern tAVCT_CB avct_cb; 223 #else 224 extern tAVCT_CB *avct_cb_ptr; 225 #define avct_cb (*avct_cb_ptr) 226 #endif 227 228 /* L2CAP callback registration structure */ 229 extern const tL2CAP_APPL_INFO avct_l2c_appl; 230 #if (AVCT_BROWSE_INCLUDED == TRUE) 231 extern const tL2CAP_APPL_INFO avct_l2c_br_appl; 232 #endif 233 234 #ifdef __cplusplus 235 } 236 #endif 237 238 #endif /* AVCT_INT_H */ 239