/****************************************************************************** * * Copyright (C) 2003-2012 Broadcom Corporation * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * ******************************************************************************/ #include "bt_target.h" #if SMP_INCLUDED == TRUE #include #include "smp_int.h" const char * const smp_state_name [] = { "SMP_ST_IDLE", "SMP_ST_WAIT_APP_RSP", "SMP_ST_SEC_REQ_PENDING", "SMP_ST_PAIR_REQ_RSP", "SMP_ST_WAIT_CONFIRM", "SMP_ST_CONFIRM", "SMP_ST_RAND", "SMP_ST_ENC_PENDING", "SMP_ST_BOND_PENDING", "SMP_ST_RELEASE_DELAY", "SMP_ST_MAX" }; const char * const smp_event_name [] = { "PAIRING_REQ_EVT", "PAIRING_RSP_EVT", "CONFIRM_EVT", "RAND_EVT", "PAIRING_FAILED_EVT", "ENC_INFO_EVT", "MASTER_ID_EVT", "ID_INFO_EVT", "ID_ADDR_EVT", "SIGN_INFO_EVT", "SECURITY_REQ_EVT", "KEY_READY_EVT", "ENCRYPTED_EVT", "L2CAP_CONN_EVT", "L2CAP_DISCONN_EVT", "API_IO_RSP_EVT", "API_SEC_GRANT_EVT", "TK_REQ_EVT", "AUTH_CMPL_EVT", "ENC_REQ_EVT", "BOND_REQ_EVT", "DISCARD_SEC_REQ_EVT", "RELEASE_DELAY_EVT", "RELEASE_DELAY_TOUT_EVT", "MAX_EVT" }; const char * smp_get_event_name(tSMP_EVENT event); const char * smp_get_state_name(tSMP_STATE state); #define SMP_SM_IGNORE 0 #define SMP_NUM_ACTIONS 2 #define SMP_SME_NEXT_STATE 2 #define SMP_SM_NUM_COLS 3 typedef const UINT8 (*tSMP_SM_TBL)[SMP_SM_NUM_COLS]; enum { SMP_PROC_SEC_REQ, SMP_SEND_PAIR_REQ, SMP_SEND_PAIR_RSP, SMP_SEND_CONFIRM, SMP_SEND_PAIR_FAIL, SMP_SEND_INIT, SMP_SEND_SECU_INFO, SMP_SEND_ID_INFO, SMP_SEND_LTK_REPLY, SMP_PROC_PAIR_CMD, SMP_PROC_PAIR_FAIL, SMP_PROC_CONFIRM, SMP_PROC_INIT, SMP_PROC_ENC_INFO, SMP_PROC_MASTER_ID, SMP_PROC_ID_INFO, SMP_PROC_ID_ADDR, SMP_PROC_SRK_INFO, SMP_PROC_SEC_GRANT, SMP_PROC_SL_KEY, SMP_PROC_COMPARE, SMP_PROC_IO_RSP, SMP_GENERATE_COMPARE, SMP_GENERATE_CONFIRM, SMP_GENERATE_STK, SMP_KEY_DISTRIBUTE, SMP_START_ENC, SMP_PAIRING_CMPL, SMP_DECIDE_ASSO_MODEL, SMP_SEND_APP_CBACK, SMP_CHECK_AUTH_REQ, SMP_PAIR_TERMINATE, SMP_ENC_CMPL, SMP_PROC_DISCARD, SMP_PROC_REL_DELAY, SMP_PROC_REL_DELAY_TOUT, SMP_SM_NO_ACTION }; static const tSMP_ACT smp_sm_action[] = { smp_proc_sec_req, smp_send_pair_req, smp_send_pair_rsp, smp_send_confirm, smp_send_pair_fail, smp_send_init, smp_send_enc_info, smp_send_id_info, smp_send_ltk_reply, smp_proc_pair_cmd, smp_proc_pair_fail, smp_proc_confirm, smp_proc_init, smp_proc_enc_info, smp_proc_master_id, smp_proc_id_info, smp_proc_id_addr, smp_proc_srk_info, smp_proc_sec_grant, smp_proc_sl_key, smp_proc_compare, smp_proc_io_rsp, smp_generate_compare, smp_generate_confirm, smp_generate_stk, smp_key_distribution, smp_start_enc, smp_pairing_cmpl, smp_decide_asso_model, smp_send_app_cback, smp_check_auth_req, smp_pair_terminate, smp_enc_cmpl, smp_proc_discard, smp_proc_release_delay, smp_proc_release_delay_tout, }; /************ SMP Master FSM State/Event Indirection Table **************/ static const UINT8 smp_ma_entry_map[][SMP_ST_MAX] = { /* state name: Idle WaitApp SecReq Pair Wait Confirm Init Enc Bond Rel Rsp Pend ReqRsp Cfm Pend Pend Delay */ /* PAIR_REQ */{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* PAIR_RSP */{ 0, 0, 0, 1, 0, 0, 0, 0, 0, 0 }, /* CONFIRM */{ 0, 0, 0, 0, 0, 1, 0, 0, 0, 0 }, /* INIT */{ 0, 0, 0, 0, 0, 0, 1, 0, 0, 0 }, /* PAIR_FAIL */{ 0, 0x81, 0, 0x81, 0x81,0x81, 0x81,0, 0, 0 }, /* ENC_INFO */{ 0, 0, 0, 0, 0, 0, 0, 0, 1, 0 }, /* MASTER_ID */{ 0, 0, 0, 0, 0, 0, 0, 0, 4, 0 }, /* ID_INFO */{ 0, 0, 0, 0, 0, 0, 0, 0, 2, 0 }, /* ID_ADDR */{ 0, 0, 0, 0, 0, 0, 0, 0, 5, 0 }, /* SIGN_INFO */{ 0, 0, 0, 0, 0, 0, 0, 0, 3, 0 }, /* SEC_REQ */{ 2, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* KEY_READY */{ 0, 3, 0, 3, 1, 0, 2, 1, 6, 0 }, /* ENC_CMPL */{ 0, 0, 0, 0, 0, 0, 0, 2, 0, 0 }, /* L2C_CONN */{ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* L2C_DISC */{ 0, 0x83, 0, 0x83, 0x83,0x83, 0x83,0x83, 0x83, 2 }, /* IO_RSP */{ 0, 2, 0, 0, 0, 0, 0, 0, 0, 0 }, /* SEC_GRANT */{ 0, 1, 0, 0, 0, 0, 0, 0, 0, 0 }, /* TK_REQ */{ 0, 0, 0, 2, 0, 0, 0, 0, 0, 0 }, /* AUTH_CMPL */{ 0, 0x82, 0, 0x82, 0x82,0x82, 0x82,0x82, 0x82, 0 }, /* ENC_REQ */{ 0, 4, 0, 0, 0, 0, 3, 0, 0, 0 }, /* BOND_REQ */{ 0, 0, 0, 0, 0, 0, 0, 3, 0, 0 }, /* DISCARD_SEC_REQ */{ 0, 5, 0, 0, 0, 0, 0, 3, 0, 0 }, /* RELEASE_DELAY */{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 }, /* RELEASE_DELAY_TOUT */{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 2 }, }; static const UINT8 smp_all_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* PAIR_FAIL */ {SMP_PROC_PAIR_FAIL, SMP_PROC_REL_DELAY_TOUT, SMP_ST_IDLE}, /* AUTH_CMPL */ {SMP_SEND_PAIR_FAIL, SMP_PAIRING_CMPL, SMP_ST_RELEASE_DELAY}, /* L2C_DISC */ {SMP_PAIR_TERMINATE, SMP_SM_NO_ACTION, SMP_ST_IDLE} }; static const UINT8 smp_ma_idle_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* L2C_CONN */ {SMP_SEND_APP_CBACK, SMP_SM_NO_ACTION, SMP_ST_WAIT_APP_RSP}, /* SEC_REQ */ {SMP_PROC_SEC_REQ, SMP_SEND_APP_CBACK, SMP_ST_WAIT_APP_RSP} }; static const UINT8 smp_ma_wait_app_rsp_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* SEC_GRANT */ { SMP_PROC_SEC_GRANT, SMP_SEND_APP_CBACK, SMP_ST_WAIT_APP_RSP}, /* IO_RSP */ { SMP_SEND_PAIR_REQ, SMP_SM_NO_ACTION, SMP_ST_PAIR_REQ_RSP}, /* KEY_READY */ { SMP_GENERATE_CONFIRM, SMP_SM_NO_ACTION, SMP_ST_WAIT_CONFIRM},/* TK ready */ /* ENC_REQ */ { SMP_START_ENC, SMP_SM_NO_ACTION, SMP_ST_ENC_PENDING},/* start enc mode setup */ /* DISCARD_SEC_REQ */ { SMP_PROC_DISCARD, SMP_SM_NO_ACTION, SMP_ST_IDLE} }; static const UINT8 smp_ma_pair_req_rsp_table [][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* PAIR_RSP */ { SMP_PROC_PAIR_CMD, SMP_DECIDE_ASSO_MODEL, SMP_ST_PAIR_REQ_RSP}, /* TK_REQ */ { SMP_SEND_APP_CBACK, SMP_SM_NO_ACTION, SMP_ST_WAIT_APP_RSP}, /* KEY_READY */{ SMP_GENERATE_CONFIRM, SMP_SM_NO_ACTION, SMP_ST_WAIT_CONFIRM} /* TK ready */ }; static const UINT8 smp_ma_wait_confirm_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* KEY_READY*/ {SMP_SEND_CONFIRM, SMP_SM_NO_ACTION, SMP_ST_CONFIRM}/* CONFIRM ready */ }; static const UINT8 smp_ma_confirm_table [][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* CONFIRM */ { SMP_PROC_CONFIRM, SMP_SEND_INIT, SMP_ST_RAND} }; static const UINT8 smp_ma_init_table [][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* INIT */ { SMP_PROC_INIT, SMP_GENERATE_COMPARE, SMP_ST_RAND}, /* KEY_READY*/ { SMP_PROC_COMPARE, SMP_SM_NO_ACTION, SMP_ST_RAND}, /* Compare ready */ /* ENC_REQ */ { SMP_GENERATE_STK, SMP_SM_NO_ACTION, SMP_ST_ENC_PENDING} }; static const UINT8 smp_ma_enc_pending_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* KEY_READY */ { SMP_START_ENC, SMP_SM_NO_ACTION, SMP_ST_ENC_PENDING}, /* STK ready */ /* ENCRYPTED */ { SMP_CHECK_AUTH_REQ, SMP_SM_NO_ACTION, SMP_ST_ENC_PENDING}, /* BOND_REQ */ { SMP_KEY_DISTRIBUTE, SMP_SM_NO_ACTION, SMP_ST_BOND_PENDING} }; static const UINT8 smp_ma_bond_pending_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* ENC_INFO */ { SMP_PROC_ENC_INFO, SMP_SM_NO_ACTION, SMP_ST_BOND_PENDING}, /* ID_INFO */ { SMP_PROC_ID_INFO, SMP_SM_NO_ACTION, SMP_ST_BOND_PENDING}, /* SIGN_INFO*/ { SMP_PROC_SRK_INFO, SMP_SM_NO_ACTION, SMP_ST_BOND_PENDING}, /* MASTER_ID*/ { SMP_PROC_MASTER_ID, SMP_SM_NO_ACTION, SMP_ST_BOND_PENDING}, /* ID_ADDR */ { SMP_PROC_ID_ADDR, SMP_SM_NO_ACTION, SMP_ST_BOND_PENDING}, /* KEY_READY */ {SMP_SEND_SECU_INFO, SMP_SM_NO_ACTION, SMP_ST_BOND_PENDING} /* LTK ready */ }; static const UINT8 smp_ma_rel_delay_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* RELEASE_DELAY*/ {SMP_PROC_REL_DELAY, SMP_SM_NO_ACTION, SMP_ST_RELEASE_DELAY}, /* RELEASE_DELAY_TOUT*/ {SMP_PROC_REL_DELAY_TOUT, SMP_SM_NO_ACTION, SMP_ST_IDLE} }; /************ SMP Slave FSM State/Event Indirection Table **************/ static const UINT8 smp_sl_entry_map[][SMP_ST_MAX] = { /* state name: Idle Wait SecReq Pair Wait Confirm Init Enc Bond Rel AppRsp Pend ReqRsp Cfm Pend Pend Delay */ /* PAIR_REQ */ { 2, 0, 1, 0, 0, 0, 0, 0, 0, 0 }, /* PAIR_RSP */ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* CONFIRM */ { 0, 4, 0, 1, 1, 0, 0, 0, 0, 0 }, /* INIT */ { 0, 0, 0, 0, 0, 1, 2, 0, 0, 0 }, /* PAIR_FAIL*/ { 0, 0x81, 0x81, 0x81, 0x81,0x81, 0x81,0x81, 0, 0 }, /* ENC_INFO */ { 0, 0, 0, 0, 0, 0, 0, 0, 3, 0 }, /* MASTER_ID*/ { 0, 0, 0, 0, 0, 0, 0, 0, 5, 0 }, /* ID_INFO */ { 0, 0, 0, 0, 0, 0, 0, 0, 4, 0 }, /* ID_ADDR */ { 0, 0, 0, 0, 0, 0, 0, 0, 6, 0 }, /* SIGN_INFO*/ { 0, 0, 0, 0, 0, 0, 0, 0, 2, 0 }, /* SEC_REQ */ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* KEY_READY*/ { 0, 3, 0, 3, 2, 2, 1, 2, 1, 0 }, /* ENC_CMPL */ { 0, 0, 2, 0, 0, 0, 0, 3, 0, 0 }, /* L2C_CONN */ { 1, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* L2C_DISC */ { 0, 0x83, 0x83, 0x83, 0x83,0x83, 0x83,0x83, 0x83, 2 }, /* IO_RSP */ { 0, 1, 0, 0, 0, 0, 0, 0, 0, 0 }, /* SEC_GRANT*/ { 0, 2, 0, 0, 0, 0, 0, 0, 0, 0 }, /* TK_REQ */ { 0, 0, 0, 2, 0, 0, 0, 0, 0, 0 }, /* AUTH_CMPL*/ { 0, 0x82, 0x82, 0x82, 0x82,0x82, 0x82,0x82, 0x82, 0 }, /* ENC_REQ */ { 0, 0, 0, 0, 0, 0, 0, 1, 0, 0 }, /* BOND_REQ */ { 0, 0, 0, 0, 0, 0, 0, 4, 0, 0 }, /* DISCARD_SEC_REQ */ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* RELEASE_DELAY */ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 }, /* RELEASE_DELAY_TOUT */ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 2 }, }; static const UINT8 smp_sl_idle_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* L2C_CONN */ {SMP_SEND_APP_CBACK, SMP_SM_NO_ACTION, SMP_ST_WAIT_APP_RSP}, /* PAIR_REQ */ {SMP_PROC_PAIR_CMD, SMP_SEND_APP_CBACK, SMP_ST_WAIT_APP_RSP} }; static const UINT8 smp_sl_wait_app_rsp_table [][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* IO_RSP */ {SMP_PROC_IO_RSP, SMP_SM_NO_ACTION, SMP_ST_PAIR_REQ_RSP}, /* SEC_GRANT */ {SMP_PROC_SEC_GRANT, SMP_SEND_APP_CBACK, SMP_ST_WAIT_APP_RSP}, /* KEY_READY */ {SMP_PROC_SL_KEY, SMP_SM_NO_ACTION, SMP_ST_WAIT_APP_RSP},/* TK ready */ /* CONFIRM */ {SMP_PROC_CONFIRM, SMP_SM_NO_ACTION, SMP_ST_CONFIRM} }; static const UINT8 smp_sl_sec_request_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* PAIR_REQ */{SMP_PROC_PAIR_CMD, SMP_SEND_PAIR_RSP, SMP_ST_PAIR_REQ_RSP}, /* ENCRYPTED*/{SMP_ENC_CMPL, SMP_SM_NO_ACTION, SMP_ST_PAIR_REQ_RSP}, }; static const UINT8 smp_sl_pair_req_rsp_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* CONFIRM */ {SMP_PROC_CONFIRM, SMP_SM_NO_ACTION, SMP_ST_CONFIRM}, /* TK_REQ */ {SMP_SEND_APP_CBACK, SMP_SM_NO_ACTION, SMP_ST_WAIT_APP_RSP}, /* KEY_READY */{SMP_PROC_SL_KEY, SMP_SM_NO_ACTION, SMP_ST_PAIR_REQ_RSP} /* TK/Confirm ready */ }; static const UINT8 smp_sl_wait_confirm_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* CONFIRM */ {SMP_PROC_CONFIRM, SMP_SEND_CONFIRM, SMP_ST_CONFIRM}, /* KEY_READY*/ {SMP_PROC_SL_KEY, SMP_SM_NO_ACTION, SMP_ST_WAIT_CONFIRM} }; static const UINT8 smp_sl_confirm_table [][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* INIT_EVT */{ SMP_PROC_INIT, SMP_GENERATE_COMPARE, SMP_ST_RAND}, /* KEY_READY*/ {SMP_PROC_SL_KEY, SMP_SM_NO_ACTION, SMP_ST_CONFIRM} /* TK/Confirm ready */ }; static const UINT8 smp_sl_init_table [][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* KEY_READY */ {SMP_PROC_COMPARE, SMP_SM_NO_ACTION, SMP_ST_RAND}, /* compare match */ /* INIT_EVT */ {SMP_SEND_INIT, SMP_SM_NO_ACTION, SMP_ST_ENC_PENDING} }; static const UINT8 smp_sl_enc_pending_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* ENC_REQ */ {SMP_GENERATE_STK, SMP_SM_NO_ACTION, SMP_ST_ENC_PENDING}, /* KEY_READY */ {SMP_SEND_LTK_REPLY, SMP_SM_NO_ACTION, SMP_ST_ENC_PENDING},/* STK ready */ /* ENCRYPTED */ {SMP_CHECK_AUTH_REQ, SMP_SM_NO_ACTION, SMP_ST_ENC_PENDING}, /* BOND_REQ */ {SMP_KEY_DISTRIBUTE, SMP_SM_NO_ACTION, SMP_ST_BOND_PENDING} }; static const UINT8 smp_sl_bond_pending_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* KEY_READY */ {SMP_SEND_SECU_INFO, SMP_SM_NO_ACTION, SMP_ST_BOND_PENDING}, /* LTK ready */ /* SIGN_INFO */ {SMP_PROC_SRK_INFO, SMP_SM_NO_ACTION, SMP_ST_BOND_PENDING}, /* rev SRK */ /* ENC_INFO */ { SMP_PROC_ENC_INFO, SMP_SM_NO_ACTION, SMP_ST_BOND_PENDING}, /* ID_INFO */ { SMP_PROC_ID_INFO, SMP_SM_NO_ACTION, SMP_ST_BOND_PENDING}, /* MASTER_ID*/ { SMP_PROC_MASTER_ID, SMP_SM_NO_ACTION, SMP_ST_BOND_PENDING}, /* ID_ADDR */ { SMP_PROC_ID_ADDR, SMP_SM_NO_ACTION, SMP_ST_BOND_PENDING} }; static const UINT8 smp_sl_rel_delay_table[][SMP_SM_NUM_COLS] = { /* Event Action Next State */ /* RELEASE_DELAY*/ {SMP_PROC_REL_DELAY, SMP_SM_NO_ACTION, SMP_ST_RELEASE_DELAY}, /* RELEASE_DELAY_TOUT*/ {SMP_PROC_REL_DELAY_TOUT, SMP_SM_NO_ACTION, SMP_ST_IDLE} }; static const tSMP_SM_TBL smp_state_table[][2] = { {smp_ma_idle_table, smp_sl_idle_table}, /* SMP_ST_IDLE*/ {smp_ma_wait_app_rsp_table, smp_sl_wait_app_rsp_table}, /* SMP_ST_WAIT_APP_RSP */ {NULL, smp_sl_sec_request_table}, /* SMP_ST_SEC_REQ_PENDING */ {smp_ma_pair_req_rsp_table, smp_sl_pair_req_rsp_table}, /* SMP_ST_PAIR_REQ_RSP */ {smp_ma_wait_confirm_table, smp_sl_wait_confirm_table}, /* SMP_ST_WAIT_CONFIRM */ {smp_ma_confirm_table, smp_sl_confirm_table}, /* SMP_ST_CONFIRM */ {smp_ma_init_table, smp_sl_init_table}, /* SMP_ST_RAND */ {smp_ma_enc_pending_table, smp_sl_enc_pending_table}, /* SMP_ST_ENC_PENDING */ {smp_ma_bond_pending_table, smp_sl_bond_pending_table}, /* SMP_ST_BOND_PENDING */ {smp_ma_rel_delay_table, smp_sl_rel_delay_table} /* SMP_ST_RELEASE_DELAY */ }; typedef const UINT8 (*tSMP_ENTRY_TBL)[SMP_ST_MAX]; static const tSMP_ENTRY_TBL smp_entry_table[] ={ smp_ma_entry_map, smp_sl_entry_map }; #if SMP_DYNAMIC_MEMORY == FALSE tSMP_CB smp_cb; #endif #define SMP_ALL_TBL_MASK 0x80 /******************************************************************************* ** Function smp_set_state ** Returns None *******************************************************************************/ void smp_set_state(tSMP_STATE state) { if (state < SMP_ST_MAX) { SMP_TRACE_DEBUG4( "State change: %s(%d) ==> %s(%d)", smp_get_state_name(smp_cb.state), smp_cb.state, smp_get_state_name(state), state ); smp_cb.state = state; } else { SMP_TRACE_DEBUG1("smp_set_state invalid state =%d", state ); } } /******************************************************************************* ** Function smp_get_state ** Returns The smp state *******************************************************************************/ tSMP_STATE smp_get_state(void) { return smp_cb.state; } /******************************************************************************* ** ** Function smp_sm_event ** ** Description Handle events to the state machine. It looks up the entry ** in the smp_entry_table array. ** If it is a valid entry, it gets the state table.Set the next state, ** if not NULL state.Execute the action function according to the ** state table. If the state returned by action function is not NULL ** state, adjust the new state to the returned state.If (api_evt != MAX), ** call callback function. ** ** Returns void. ** *******************************************************************************/ void smp_sm_event(tSMP_CB *p_cb, tSMP_EVENT event, void *p_data) { UINT8 curr_state = p_cb->state; tSMP_SM_TBL state_table; UINT8 action, entry, i; tSMP_ENTRY_TBL entry_table = smp_entry_table[p_cb->role]; SMP_TRACE_EVENT0("main smp_sm_event"); if (curr_state >= SMP_ST_MAX) { SMP_TRACE_DEBUG1( "Invalid state: %d", curr_state) ; return; } SMP_TRACE_DEBUG5( "SMP Role: %s State: [%s (%d)], Event: [%s (%d)]",\ (p_cb->role == 0x01) ?"Slave" : "Master", smp_get_state_name( p_cb->state), p_cb->state, smp_get_event_name(event), event) ; /* look up the state table for the current state */ /* lookup entry /w event & curr_state */ /* If entry is ignore, return. * Otherwise, get state table (according to curr_state or all_state) */ if ( (entry = entry_table[event - 1][curr_state]) != SMP_SM_IGNORE ) { if (entry & SMP_ALL_TBL_MASK) { entry &= ~SMP_ALL_TBL_MASK; state_table = smp_all_table; } else state_table = smp_state_table[curr_state][p_cb->role]; } else { SMP_TRACE_DEBUG4( "Ignore event [%s (%d)] in state [%s (%d)]", smp_get_event_name(event), event, smp_get_state_name(curr_state), curr_state); return; } /* Get possible next state from state table. */ smp_set_state(state_table[entry-1][SMP_SME_NEXT_STATE]); /* If action is not ignore, clear param, exec action and get next state. * The action function may set the Param for cback. * Depending on param, call cback or free buffer. */ /* execute action */ /* execute action functions */ for (i = 0; i < SMP_NUM_ACTIONS; i++) { if ((action = state_table[entry-1][i]) != SMP_SM_NO_ACTION) { (*smp_sm_action[action])(p_cb, (tSMP_INT_DATA *)p_data); } else { break; } } SMP_TRACE_DEBUG1( "result state = %s", smp_get_state_name( p_cb->state ) ) ; } /******************************************************************************* ** Function smp_get_state_name ** Returns The smp state name. *******************************************************************************/ const char * smp_get_state_name(tSMP_STATE state) { const char * p_str = smp_state_name[SMP_ST_MAX]; if (state < SMP_ST_MAX) { p_str = smp_state_name[state]; } return p_str; } /******************************************************************************* ** Function smp_get_event_name ** Returns The smp event name. *******************************************************************************/ const char * smp_get_event_name(tSMP_EVENT event) { const char * p_str = smp_event_name[SMP_MAX_EVT - 1]; if (event < SMP_MAX_EVT) { p_str = smp_event_name[event- 1]; } return p_str; } #endif