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 #include "bt_target.h" 20 21 #if SMP_INCLUDED == TRUE 22 23 #include <string.h> 24 #include "smp_int.h" 25 26 27 const char * const smp_state_name [] = 28 { 29 "SMP_ST_IDLE", 30 "SMP_ST_WAIT_APP_RSP", 31 "SMP_ST_SEC_REQ_PENDING", 32 "SMP_ST_PAIR_REQ_RSP", 33 "SMP_ST_WAIT_CONFIRM", 34 "SMP_ST_CONFIRM", 35 "SMP_ST_RAND", 36 "SMP_ST_ENC_PENDING", 37 "SMP_ST_BOND_PENDING", 38 "SMP_ST_RELEASE_DELAY", 39 "SMP_ST_MAX" 40 }; 41 const char * const smp_event_name [] = 42 { 43 "PAIRING_REQ_EVT", 44 "PAIRING_RSP_EVT", 45 "CONFIRM_EVT", 46 "RAND_EVT", 47 "PAIRING_FAILED_EVT", 48 "ENC_INFO_EVT", 49 "MASTER_ID_EVT", 50 "ID_INFO_EVT", 51 "ID_ADDR_EVT", 52 "SIGN_INFO_EVT", 53 "SECURITY_REQ_EVT", 54 "KEY_READY_EVT", 55 "ENCRYPTED_EVT", 56 "L2CAP_CONN_EVT", 57 "L2CAP_DISCONN_EVT", 58 "API_IO_RSP_EVT", 59 "API_SEC_GRANT_EVT", 60 "TK_REQ_EVT", 61 "AUTH_CMPL_EVT", 62 "ENC_REQ_EVT", 63 "BOND_REQ_EVT", 64 "DISCARD_SEC_REQ_EVT", 65 "RELEASE_DELAY_EVT", 66 "RELEASE_DELAY_TOUT_EVT", 67 "MAX_EVT" 68 }; 69 const char * smp_get_event_name(tSMP_EVENT event); 70 const char * smp_get_state_name(tSMP_STATE state); 71 72 #define SMP_SM_IGNORE 0 73 #define SMP_NUM_ACTIONS 2 74 #define SMP_SME_NEXT_STATE 2 75 #define SMP_SM_NUM_COLS 3 76 typedef const UINT8 (*tSMP_SM_TBL)[SMP_SM_NUM_COLS]; 77 78 enum 79 { 80 SMP_PROC_SEC_REQ, 81 SMP_SEND_PAIR_REQ, 82 SMP_SEND_PAIR_RSP, 83 SMP_SEND_CONFIRM, 84 SMP_SEND_PAIR_FAIL, 85 SMP_SEND_INIT, 86 SMP_SEND_SECU_INFO, 87 SMP_SEND_ID_INFO, 88 SMP_SEND_LTK_REPLY, 89 SMP_PROC_PAIR_CMD, 90 SMP_PROC_PAIR_FAIL, 91 SMP_PROC_CONFIRM, 92 SMP_PROC_INIT, 93 SMP_PROC_ENC_INFO, 94 SMP_PROC_MASTER_ID, 95 SMP_PROC_ID_INFO, 96 SMP_PROC_ID_ADDR, 97 SMP_PROC_SRK_INFO, 98 SMP_PROC_SEC_GRANT, 99 SMP_PROC_SL_KEY, 100 SMP_PROC_COMPARE, 101 SMP_PROC_IO_RSP, 102 SMP_GENERATE_COMPARE, 103 SMP_GENERATE_CONFIRM, 104 SMP_GENERATE_STK, 105 SMP_KEY_DISTRIBUTE, 106 SMP_START_ENC, 107 SMP_PAIRING_CMPL, 108 SMP_DECIDE_ASSO_MODEL, 109 SMP_SEND_APP_CBACK, 110 SMP_CHECK_AUTH_REQ, 111 SMP_PAIR_TERMINATE, 112 SMP_ENC_CMPL, 113 SMP_PROC_DISCARD, 114 SMP_PROC_REL_DELAY, 115 SMP_PROC_REL_DELAY_TOUT, 116 SMP_DELAY_TERMINATE, 117 SMP_SM_NO_ACTION 118 }; 119 120 static const tSMP_ACT smp_sm_action[] = 121 { 122 smp_proc_sec_req, 123 smp_send_pair_req, 124 smp_send_pair_rsp, 125 smp_send_confirm, 126 smp_send_pair_fail, 127 smp_send_init, 128 smp_send_enc_info, 129 smp_send_id_info, 130 smp_send_ltk_reply, 131 smp_proc_pair_cmd, 132 smp_proc_pair_fail, 133 smp_proc_confirm, 134 smp_proc_init, 135 smp_proc_enc_info, 136 smp_proc_master_id, 137 smp_proc_id_info, 138 smp_proc_id_addr, 139 smp_proc_srk_info, 140 smp_proc_sec_grant, 141 smp_proc_sl_key, 142 smp_proc_compare, 143 smp_proc_io_rsp, 144 smp_generate_compare, 145 smp_generate_confirm, 146 smp_generate_stk, 147 smp_key_distribution, 148 smp_start_enc, 149 smp_pairing_cmpl, 150 smp_decide_asso_model, 151 smp_send_app_cback, 152 smp_check_auth_req, 153 smp_pair_terminate, 154 smp_enc_cmpl, 155 smp_proc_discard, 156 smp_proc_release_delay, 157 smp_proc_release_delay_tout, 158 smp_delay_terminate, 159 }; 160 /************ SMP Master FSM State/Event Indirection Table **************/ 161 static const UINT8 smp_ma_entry_map[][SMP_ST_MAX] = 162 { 163 /* state name: Idle WaitApp SecReq Pair Wait Confirm Init Enc Bond Rel 164 Rsp Pend ReqRsp Cfm Pend Pend Delay */ 165 /* PAIR_REQ */{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 166 /* PAIR_RSP */{ 0, 0, 0, 1, 0, 0, 0, 0, 0, 0 }, 167 /* CONFIRM */{ 0, 0, 0, 0, 0, 1, 0, 0, 0, 0 }, 168 /* INIT */{ 0, 0, 0, 0, 0, 0, 1, 0, 0, 0 }, 169 /* PAIR_FAIL */{ 0, 0x81, 0, 0x81, 0x81,0x81, 0x81,0, 0, 0 }, 170 /* ENC_INFO */{ 0, 0, 0, 0, 0, 0, 0, 0, 1, 0 }, 171 /* MASTER_ID */{ 0, 0, 0, 0, 0, 0, 0, 0, 4, 0 }, 172 /* ID_INFO */{ 0, 0, 0, 0, 0, 0, 0, 0, 2, 0 }, 173 /* ID_ADDR */{ 0, 0, 0, 0, 0, 0, 0, 0, 5, 0 }, 174 /* SIGN_INFO */{ 0, 0, 0, 0, 0, 0, 0, 0, 3, 0 }, 175 /* SEC_REQ */{ 2, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 176 /* KEY_READY */{ 0, 3, 0, 3, 1, 0, 2, 1, 6, 0 }, 177 /* ENC_CMPL */{ 0, 0, 0, 0, 0, 0, 0, 2, 0, 0 }, 178 /* L2C_CONN */{ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 179 /* L2C_DISC */{ 0x83, 0x83, 0, 0x83, 0x83,0x83, 0x83,0x83, 0x83, 3 }, 180 /* IO_RSP */{ 0, 2, 0, 0, 0, 0, 0, 0, 0, 0 }, 181 /* SEC_GRANT */{ 0, 1, 0, 0, 0, 0, 0, 0, 0, 0 }, 182 /* TK_REQ */{ 0, 0, 0, 2, 0, 0, 0, 0, 0, 0 }, 183 /* AUTH_CMPL */{ 0, 0x82, 0, 0x82, 0x82,0x82, 0x82,0x82, 0x82, 0 }, 184 /* ENC_REQ */{ 0, 4, 0, 0, 0, 0, 3, 0, 0, 0 }, 185 /* BOND_REQ */{ 0, 0, 0, 0, 0, 0, 0, 3, 0, 0 }, 186 /* DISCARD_SEC_REQ */{ 0, 5, 0, 0, 0, 0, 0, 3, 0, 0 }, 187 /* RELEASE_DELAY */{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 }, 188 /* RELEASE_DELAY_TOUT */{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 2 }, 189 }; 190 191 static const UINT8 smp_all_table[][SMP_SM_NUM_COLS] = { 192 /* Event Action Next State */ 193 /* PAIR_FAIL */ {SMP_PROC_PAIR_FAIL, SMP_PROC_REL_DELAY_TOUT, SMP_ST_IDLE}, 194 /* AUTH_CMPL */ {SMP_SEND_PAIR_FAIL, SMP_PAIRING_CMPL, SMP_ST_RELEASE_DELAY}, 195 /* L2C_DISC */ {SMP_PAIR_TERMINATE, SMP_SM_NO_ACTION, SMP_ST_IDLE} 196 }; 197 198 static const UINT8 smp_ma_idle_table[][SMP_SM_NUM_COLS] = { 199 /* Event Action Next State */ 200 /* L2C_CONN */ {SMP_SEND_APP_CBACK, SMP_SM_NO_ACTION, SMP_ST_WAIT_APP_RSP}, 201 /* SEC_REQ */ {SMP_PROC_SEC_REQ, SMP_SEND_APP_CBACK, SMP_ST_WAIT_APP_RSP} 202 }; 203 204 static const UINT8 smp_ma_wait_app_rsp_table[][SMP_SM_NUM_COLS] = { 205 /* Event Action Next State */ 206 /* SEC_GRANT */ { SMP_PROC_SEC_GRANT, SMP_SEND_APP_CBACK, SMP_ST_WAIT_APP_RSP}, 207 /* IO_RSP */ { SMP_SEND_PAIR_REQ, SMP_SM_NO_ACTION, SMP_ST_PAIR_REQ_RSP}, 208 /* KEY_READY */ { SMP_GENERATE_CONFIRM, SMP_SM_NO_ACTION, SMP_ST_WAIT_CONFIRM},/* TK ready */ 209 /* ENC_REQ */ { SMP_START_ENC, SMP_SM_NO_ACTION, SMP_ST_ENC_PENDING},/* start enc mode setup */ 210 /* DISCARD_SEC_REQ */ { SMP_PROC_DISCARD, SMP_SM_NO_ACTION, SMP_ST_IDLE} 211 }; 212 213 static const UINT8 smp_ma_pair_req_rsp_table [][SMP_SM_NUM_COLS] = { 214 /* Event Action Next State */ 215 /* PAIR_RSP */ { SMP_PROC_PAIR_CMD, SMP_DECIDE_ASSO_MODEL, SMP_ST_PAIR_REQ_RSP}, 216 /* TK_REQ */ { SMP_SEND_APP_CBACK, SMP_SM_NO_ACTION, SMP_ST_WAIT_APP_RSP}, 217 /* KEY_READY */{ SMP_GENERATE_CONFIRM, SMP_SM_NO_ACTION, SMP_ST_WAIT_CONFIRM} /* TK ready */ 218 }; 219 220 static const UINT8 smp_ma_wait_confirm_table[][SMP_SM_NUM_COLS] = { 221 /* Event Action Next State */ 222 /* KEY_READY*/ {SMP_SEND_CONFIRM, SMP_SM_NO_ACTION, SMP_ST_CONFIRM}/* CONFIRM ready */ 223 }; 224 225 static const UINT8 smp_ma_confirm_table [][SMP_SM_NUM_COLS] = { 226 /* Event Action Next State */ 227 /* CONFIRM */ { SMP_PROC_CONFIRM, SMP_SEND_INIT, SMP_ST_RAND} 228 }; 229 230 static const UINT8 smp_ma_init_table [][SMP_SM_NUM_COLS] = { 231 /* Event Action Next State */ 232 /* INIT */ { SMP_PROC_INIT, SMP_GENERATE_COMPARE, SMP_ST_RAND}, 233 /* KEY_READY*/ { SMP_PROC_COMPARE, SMP_SM_NO_ACTION, SMP_ST_RAND}, /* Compare ready */ 234 /* ENC_REQ */ { SMP_GENERATE_STK, SMP_SM_NO_ACTION, SMP_ST_ENC_PENDING} 235 }; 236 static const UINT8 smp_ma_enc_pending_table[][SMP_SM_NUM_COLS] = { 237 /* Event Action Next State */ 238 /* KEY_READY */ { SMP_START_ENC, SMP_SM_NO_ACTION, SMP_ST_ENC_PENDING}, /* STK ready */ 239 /* ENCRYPTED */ { SMP_CHECK_AUTH_REQ, SMP_SM_NO_ACTION, SMP_ST_ENC_PENDING}, 240 /* BOND_REQ */ { SMP_KEY_DISTRIBUTE, SMP_SM_NO_ACTION, SMP_ST_BOND_PENDING} 241 }; 242 static const UINT8 smp_ma_bond_pending_table[][SMP_SM_NUM_COLS] = { 243 /* Event Action Next State */ 244 /* ENC_INFO */ { SMP_PROC_ENC_INFO, SMP_SM_NO_ACTION, SMP_ST_BOND_PENDING}, 245 /* ID_INFO */ { SMP_PROC_ID_INFO, SMP_SM_NO_ACTION, SMP_ST_BOND_PENDING}, 246 /* SIGN_INFO*/ { SMP_PROC_SRK_INFO, SMP_SM_NO_ACTION, SMP_ST_BOND_PENDING}, 247 /* MASTER_ID*/ { SMP_PROC_MASTER_ID, SMP_SM_NO_ACTION, SMP_ST_BOND_PENDING}, 248 /* ID_ADDR */ { SMP_PROC_ID_ADDR, SMP_SM_NO_ACTION, SMP_ST_BOND_PENDING}, 249 /* KEY_READY */ {SMP_SEND_SECU_INFO, SMP_SM_NO_ACTION, SMP_ST_BOND_PENDING} /* LTK ready */ 250 }; 251 252 static const UINT8 smp_ma_rel_delay_table[][SMP_SM_NUM_COLS] = { 253 /* Event Action Next State */ 254 /* RELEASE_DELAY*/ {SMP_PROC_REL_DELAY, SMP_SM_NO_ACTION, SMP_ST_RELEASE_DELAY}, 255 /* RELEASE_DELAY_TOUT*/ {SMP_PROC_REL_DELAY_TOUT, SMP_SM_NO_ACTION, SMP_ST_IDLE}, 256 /* L2C_DISC*/ {SMP_DELAY_TERMINATE, SMP_SM_NO_ACTION, SMP_ST_IDLE} 257 }; 258 259 260 /************ SMP Slave FSM State/Event Indirection Table **************/ 261 static const UINT8 smp_sl_entry_map[][SMP_ST_MAX] = 262 { 263 /* state name: Idle Wait SecReq Pair Wait Confirm Init Enc Bond Rel 264 AppRsp Pend ReqRsp Cfm Pend Pend Delay */ 265 /* PAIR_REQ */ { 2, 0, 1, 0, 0, 0, 0, 0, 0, 0 }, 266 /* PAIR_RSP */ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 267 /* CONFIRM */ { 0, 4, 0, 1, 1, 0, 0, 0, 0, 0 }, 268 /* INIT */ { 0, 0, 0, 0, 0, 1, 2, 0, 0, 0 }, 269 /* PAIR_FAIL*/ { 0, 0x81, 0x81, 0x81, 0x81,0x81, 0x81,0x81, 0, 0 }, 270 /* ENC_INFO */ { 0, 0, 0, 0, 0, 0, 0, 0, 3, 0 }, 271 /* MASTER_ID*/ { 0, 0, 0, 0, 0, 0, 0, 0, 5, 0 }, 272 /* ID_INFO */ { 0, 0, 0, 0, 0, 0, 0, 0, 4, 0 }, 273 /* ID_ADDR */ { 0, 0, 0, 0, 0, 0, 0, 0, 6, 0 }, 274 /* SIGN_INFO*/ { 0, 0, 0, 0, 0, 0, 0, 0, 2, 0 }, 275 /* SEC_REQ */ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 276 277 /* KEY_READY*/ { 0, 3, 0, 3, 2, 2, 1, 2, 1, 0 }, 278 /* ENC_CMPL */ { 0, 0, 2, 0, 0, 0, 0, 3, 0, 0 }, 279 /* L2C_CONN */ { 1, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 280 /* L2C_DISC */ { 0, 0x83, 0x83, 0x83, 0x83,0x83, 0x83,0x83, 0x83, 2 }, 281 /* IO_RSP */ { 0, 1, 0, 0, 0, 0, 0, 0, 0, 0 }, 282 /* SEC_GRANT*/ { 0, 2, 0, 0, 0, 0, 0, 0, 0, 0 }, 283 284 /* TK_REQ */ { 0, 0, 0, 2, 0, 0, 0, 0, 0, 0 }, 285 /* AUTH_CMPL*/ { 0, 0x82, 0x82, 0x82, 0x82,0x82, 0x82,0x82, 0x82, 0 }, 286 /* ENC_REQ */ { 0, 0, 0, 0, 0, 0, 0, 1, 0, 0 }, 287 /* BOND_REQ */ { 0, 0, 0, 0, 0, 0, 0, 4, 0, 0 }, 288 /* DISCARD_SEC_REQ */ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 289 /* RELEASE_DELAY */ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 }, 290 /* RELEASE_DELAY_TOUT */ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 2 }, 291 }; 292 293 static const UINT8 smp_sl_idle_table[][SMP_SM_NUM_COLS] = { 294 /* Event Action Next State */ 295 /* L2C_CONN */ {SMP_SEND_APP_CBACK, SMP_SM_NO_ACTION, SMP_ST_WAIT_APP_RSP}, 296 /* PAIR_REQ */ {SMP_PROC_PAIR_CMD, SMP_SEND_APP_CBACK, SMP_ST_WAIT_APP_RSP} 297 }; 298 299 static const UINT8 smp_sl_wait_app_rsp_table [][SMP_SM_NUM_COLS] = { 300 /* Event Action Next State */ 301 /* IO_RSP */ {SMP_PROC_IO_RSP, SMP_SM_NO_ACTION, SMP_ST_PAIR_REQ_RSP}, 302 /* SEC_GRANT */ {SMP_PROC_SEC_GRANT, SMP_SEND_APP_CBACK, SMP_ST_WAIT_APP_RSP}, 303 /* KEY_READY */ {SMP_PROC_SL_KEY, SMP_SM_NO_ACTION, SMP_ST_WAIT_APP_RSP},/* TK ready */ 304 /* CONFIRM */ {SMP_PROC_CONFIRM, SMP_SM_NO_ACTION, SMP_ST_CONFIRM} 305 }; 306 307 static const UINT8 smp_sl_sec_request_table[][SMP_SM_NUM_COLS] = { 308 /* Event Action Next State */ 309 /* PAIR_REQ */{SMP_PROC_PAIR_CMD, SMP_SEND_PAIR_RSP, SMP_ST_PAIR_REQ_RSP}, 310 /* ENCRYPTED*/{SMP_ENC_CMPL, SMP_SM_NO_ACTION, SMP_ST_PAIR_REQ_RSP}, 311 }; 312 313 static const UINT8 smp_sl_pair_req_rsp_table[][SMP_SM_NUM_COLS] = { 314 /* Event Action Next State */ 315 /* CONFIRM */ {SMP_PROC_CONFIRM, SMP_SM_NO_ACTION, SMP_ST_CONFIRM}, 316 /* TK_REQ */ {SMP_SEND_APP_CBACK, SMP_SM_NO_ACTION, SMP_ST_WAIT_APP_RSP}, 317 /* KEY_READY */{SMP_PROC_SL_KEY, SMP_SM_NO_ACTION, SMP_ST_PAIR_REQ_RSP} /* TK/Confirm ready */ 318 319 }; 320 321 static const UINT8 smp_sl_wait_confirm_table[][SMP_SM_NUM_COLS] = { 322 /* Event Action Next State */ 323 /* CONFIRM */ {SMP_PROC_CONFIRM, SMP_SEND_CONFIRM, SMP_ST_CONFIRM}, 324 /* KEY_READY*/ {SMP_PROC_SL_KEY, SMP_SM_NO_ACTION, SMP_ST_WAIT_CONFIRM} 325 }; 326 static const UINT8 smp_sl_confirm_table [][SMP_SM_NUM_COLS] = { 327 /* Event Action Next State */ 328 /* INIT_EVT */{ SMP_PROC_INIT, SMP_GENERATE_COMPARE, SMP_ST_RAND}, 329 /* KEY_READY*/ {SMP_PROC_SL_KEY, SMP_SM_NO_ACTION, SMP_ST_CONFIRM} /* TK/Confirm ready */ 330 }; 331 static const UINT8 smp_sl_init_table [][SMP_SM_NUM_COLS] = { 332 /* Event Action Next State */ 333 /* KEY_READY */ {SMP_PROC_COMPARE, SMP_SM_NO_ACTION, SMP_ST_RAND}, /* compare match */ 334 /* INIT_EVT */ {SMP_SEND_INIT, SMP_SM_NO_ACTION, SMP_ST_ENC_PENDING} 335 }; 336 static const UINT8 smp_sl_enc_pending_table[][SMP_SM_NUM_COLS] = { 337 /* Event Action Next State */ 338 /* ENC_REQ */ {SMP_GENERATE_STK, SMP_SM_NO_ACTION, SMP_ST_ENC_PENDING}, 339 /* KEY_READY */ {SMP_SEND_LTK_REPLY, SMP_SM_NO_ACTION, SMP_ST_ENC_PENDING},/* STK ready */ 340 /* ENCRYPTED */ {SMP_CHECK_AUTH_REQ, SMP_SM_NO_ACTION, SMP_ST_ENC_PENDING}, 341 /* BOND_REQ */ {SMP_KEY_DISTRIBUTE, SMP_SM_NO_ACTION, SMP_ST_BOND_PENDING} 342 }; 343 static const UINT8 smp_sl_bond_pending_table[][SMP_SM_NUM_COLS] = { 344 /* Event Action Next State */ 345 /* KEY_READY */ {SMP_SEND_SECU_INFO, SMP_SM_NO_ACTION, SMP_ST_BOND_PENDING}, /* LTK ready */ 346 /* SIGN_INFO */ {SMP_PROC_SRK_INFO, SMP_SM_NO_ACTION, SMP_ST_BOND_PENDING}, /* rev SRK */ 347 /* ENC_INFO */ { SMP_PROC_ENC_INFO, SMP_SM_NO_ACTION, SMP_ST_BOND_PENDING}, 348 /* ID_INFO */ { SMP_PROC_ID_INFO, SMP_SM_NO_ACTION, SMP_ST_BOND_PENDING}, 349 /* MASTER_ID*/ { SMP_PROC_MASTER_ID, SMP_SM_NO_ACTION, SMP_ST_BOND_PENDING}, 350 /* ID_ADDR */ { SMP_PROC_ID_ADDR, SMP_SM_NO_ACTION, SMP_ST_BOND_PENDING} 351 352 }; 353 354 static const UINT8 smp_sl_rel_delay_table[][SMP_SM_NUM_COLS] = { 355 /* Event Action Next State */ 356 /* RELEASE_DELAY*/ {SMP_PROC_REL_DELAY, SMP_SM_NO_ACTION, SMP_ST_RELEASE_DELAY}, 357 /* RELEASE_DELAY_TOUT*/ {SMP_PROC_REL_DELAY_TOUT, SMP_SM_NO_ACTION, SMP_ST_IDLE} 358 }; 359 360 static const tSMP_SM_TBL smp_state_table[][2] = { 361 {smp_ma_idle_table, smp_sl_idle_table}, /* SMP_ST_IDLE*/ 362 {smp_ma_wait_app_rsp_table, smp_sl_wait_app_rsp_table}, /* SMP_ST_WAIT_APP_RSP */ 363 {NULL, smp_sl_sec_request_table}, /* SMP_ST_SEC_REQ_PENDING */ 364 {smp_ma_pair_req_rsp_table, smp_sl_pair_req_rsp_table}, /* SMP_ST_PAIR_REQ_RSP */ 365 {smp_ma_wait_confirm_table, smp_sl_wait_confirm_table}, /* SMP_ST_WAIT_CONFIRM */ 366 {smp_ma_confirm_table, smp_sl_confirm_table}, /* SMP_ST_CONFIRM */ 367 {smp_ma_init_table, smp_sl_init_table}, /* SMP_ST_RAND */ 368 {smp_ma_enc_pending_table, smp_sl_enc_pending_table}, /* SMP_ST_ENC_PENDING */ 369 {smp_ma_bond_pending_table, smp_sl_bond_pending_table}, /* SMP_ST_BOND_PENDING */ 370 {smp_ma_rel_delay_table, smp_sl_rel_delay_table} /* SMP_ST_RELEASE_DELAY */ 371 }; 372 373 typedef const UINT8 (*tSMP_ENTRY_TBL)[SMP_ST_MAX]; 374 static const tSMP_ENTRY_TBL smp_entry_table[] ={ 375 smp_ma_entry_map, 376 smp_sl_entry_map 377 }; 378 379 #if SMP_DYNAMIC_MEMORY == FALSE 380 tSMP_CB smp_cb; 381 #endif 382 #define SMP_ALL_TBL_MASK 0x80 383 384 385 /******************************************************************************* 386 ** Function smp_set_state 387 ** Returns None 388 *******************************************************************************/ 389 void smp_set_state(tSMP_STATE state) 390 { 391 if (state < SMP_ST_MAX) 392 { 393 SMP_TRACE_DEBUG4( "State change: %s(%d) ==> %s(%d)", 394 smp_get_state_name(smp_cb.state), smp_cb.state, 395 smp_get_state_name(state), state ); 396 smp_cb.state = state; 397 } 398 else 399 { 400 SMP_TRACE_DEBUG1("smp_set_state invalid state =%d", state ); 401 } 402 } 403 404 /******************************************************************************* 405 ** Function smp_get_state 406 ** Returns The smp state 407 *******************************************************************************/ 408 tSMP_STATE smp_get_state(void) 409 { 410 return smp_cb.state; 411 } 412 413 414 /******************************************************************************* 415 ** 416 ** Function smp_sm_event 417 ** 418 ** Description Handle events to the state machine. It looks up the entry 419 ** in the smp_entry_table array. 420 ** If it is a valid entry, it gets the state table.Set the next state, 421 ** if not NULL state.Execute the action function according to the 422 ** state table. If the state returned by action function is not NULL 423 ** state, adjust the new state to the returned state.If (api_evt != MAX), 424 ** call callback function. 425 ** 426 ** Returns void. 427 ** 428 *******************************************************************************/ 429 void smp_sm_event(tSMP_CB *p_cb, tSMP_EVENT event, void *p_data) 430 { 431 UINT8 curr_state = p_cb->state; 432 tSMP_SM_TBL state_table; 433 UINT8 action, entry, i; 434 tSMP_ENTRY_TBL entry_table = smp_entry_table[p_cb->role]; 435 436 SMP_TRACE_EVENT0("main smp_sm_event"); 437 if (curr_state >= SMP_ST_MAX) 438 { 439 SMP_TRACE_DEBUG1( "Invalid state: %d", curr_state) ; 440 return; 441 } 442 443 SMP_TRACE_DEBUG5( "SMP Role: %s State: [%s (%d)], Event: [%s (%d)]",\ 444 (p_cb->role == 0x01) ?"Slave" : "Master", smp_get_state_name( p_cb->state), 445 p_cb->state, smp_get_event_name(event), event) ; 446 447 /* look up the state table for the current state */ 448 /* lookup entry /w event & curr_state */ 449 /* If entry is ignore, return. 450 * Otherwise, get state table (according to curr_state or all_state) */ 451 if ((event < SMP_MAX_EVT) && ( (entry = entry_table[event - 1][curr_state]) != SMP_SM_IGNORE )) 452 { 453 if (entry & SMP_ALL_TBL_MASK) 454 { 455 entry &= ~SMP_ALL_TBL_MASK; 456 state_table = smp_all_table; 457 } 458 else 459 state_table = smp_state_table[curr_state][p_cb->role]; 460 } 461 else 462 { 463 SMP_TRACE_DEBUG4( "Ignore event [%s (%d)] in state [%s (%d)]", 464 smp_get_event_name(event), event, smp_get_state_name(curr_state), curr_state); 465 return; 466 } 467 468 /* Get possible next state from state table. */ 469 470 smp_set_state(state_table[entry-1][SMP_SME_NEXT_STATE]); 471 472 /* If action is not ignore, clear param, exec action and get next state. 473 * The action function may set the Param for cback. 474 * Depending on param, call cback or free buffer. */ 475 /* execute action */ 476 /* execute action functions */ 477 for (i = 0; i < SMP_NUM_ACTIONS; i++) 478 { 479 if ((action = state_table[entry-1][i]) != SMP_SM_NO_ACTION) 480 { 481 (*smp_sm_action[action])(p_cb, (tSMP_INT_DATA *)p_data); 482 } 483 else 484 { 485 break; 486 } 487 } 488 SMP_TRACE_DEBUG1( "result state = %s", smp_get_state_name( p_cb->state ) ) ; 489 } 490 491 492 /******************************************************************************* 493 ** Function smp_get_state_name 494 ** Returns The smp state name. 495 *******************************************************************************/ 496 const char * smp_get_state_name(tSMP_STATE state) 497 { 498 const char * p_str = smp_state_name[SMP_ST_MAX]; 499 500 if (state < SMP_ST_MAX) 501 { 502 p_str = smp_state_name[state]; 503 } 504 return p_str; 505 } 506 /******************************************************************************* 507 ** Function smp_get_event_name 508 ** Returns The smp event name. 509 *******************************************************************************/ 510 const char * smp_get_event_name(tSMP_EVENT event) 511 { 512 const char * p_str = smp_event_name[SMP_MAX_EVT - 1]; 513 514 if (event < SMP_MAX_EVT) 515 { 516 p_str = smp_event_name[event- 1]; 517 } 518 return p_str; 519 } 520 #endif 521 522
