| /****************************************************************************** |
| * |
| * Copyright 1999-2012 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. |
| * |
| ******************************************************************************/ |
| |
| /****************************************************************************** |
| * |
| * This file contains state machine and action routines for multiplexer |
| * channel of the RFCOMM unit |
| * |
| ******************************************************************************/ |
| |
| #include <cstdint> |
| |
| #include "main/shim/dumpsys.h" |
| #include "osi/include/allocator.h" |
| #include "osi/include/log.h" |
| #include "osi/include/osi.h" // UNUSED_ATTR |
| #include "stack/include/bt_hdr.h" |
| #include "stack/include/bt_types.h" |
| #include "stack/include/l2c_api.h" |
| #include "stack/rfcomm/port_int.h" |
| #include "stack/rfcomm/rfc_int.h" |
| |
| #include <base/logging.h> |
| |
| #define L2CAP_SUCCESS 0 |
| #define L2CAP_ERROR 1 |
| |
| /******************************************************************************/ |
| /* L O C A L F U N C T I O N P R O T O T Y P E S */ |
| /******************************************************************************/ |
| static void rfc_mx_sm_state_idle(tRFC_MCB* p_mcb, tRFC_MX_EVENT event, |
| void* p_data); |
| static void rfc_mx_sm_state_wait_conn_cnf(tRFC_MCB* p_mcb, tRFC_MX_EVENT event, |
| void* p_data); |
| static void rfc_mx_sm_state_configure(tRFC_MCB* p_mcb, tRFC_MX_EVENT event, |
| void* p_data); |
| static void rfc_mx_sm_sabme_wait_ua(tRFC_MCB* p_mcb, tRFC_MX_EVENT event, |
| void* p_data); |
| static void rfc_mx_sm_state_wait_sabme(tRFC_MCB* p_mcb, tRFC_MX_EVENT event, |
| void* p_data); |
| static void rfc_mx_sm_state_connected(tRFC_MCB* p_mcb, tRFC_MX_EVENT event, |
| UNUSED_ATTR void* p_data); |
| static void rfc_mx_sm_state_disc_wait_ua(tRFC_MCB* p_mcb, tRFC_MX_EVENT event, |
| void* p_data); |
| |
| static void rfc_mx_conf_ind(tRFC_MCB* p_mcb, tL2CAP_CFG_INFO* p_cfg); |
| static void rfc_mx_conf_cnf(tRFC_MCB* p_mcb, uint16_t result); |
| |
| /******************************************************************************* |
| * |
| * Function rfc_mx_sm_execute |
| * |
| * Description This function sends multiplexor events through the state |
| * machine. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| void rfc_mx_sm_execute(tRFC_MCB* p_mcb, tRFC_MX_EVENT event, void* p_data) { |
| CHECK(p_mcb != nullptr) << __func__ << ": NULL mcb for event " << event; |
| |
| LOG_INFO( |
| "RFCOMM peer:%s event:%d state:%s", PRIVATE_ADDRESS(p_mcb->bd_addr), |
| event, |
| rfcomm_mx_state_text(static_cast<tRFC_MX_STATE>(p_mcb->state)).c_str()); |
| |
| switch (p_mcb->state) { |
| case RFC_MX_STATE_IDLE: |
| rfc_mx_sm_state_idle(p_mcb, event, p_data); |
| break; |
| |
| case RFC_MX_STATE_WAIT_CONN_CNF: |
| rfc_mx_sm_state_wait_conn_cnf(p_mcb, event, p_data); |
| break; |
| |
| case RFC_MX_STATE_CONFIGURE: |
| rfc_mx_sm_state_configure(p_mcb, event, p_data); |
| break; |
| |
| case RFC_MX_STATE_SABME_WAIT_UA: |
| rfc_mx_sm_sabme_wait_ua(p_mcb, event, p_data); |
| break; |
| |
| case RFC_MX_STATE_WAIT_SABME: |
| rfc_mx_sm_state_wait_sabme(p_mcb, event, p_data); |
| break; |
| |
| case RFC_MX_STATE_CONNECTED: |
| rfc_mx_sm_state_connected(p_mcb, event, p_data); |
| break; |
| |
| case RFC_MX_STATE_DISC_WAIT_UA: |
| rfc_mx_sm_state_disc_wait_ua(p_mcb, event, p_data); |
| break; |
| |
| default: |
| LOG_ERROR("Received unexpected event:%hu in state:%hhu", event, |
| p_mcb->state); |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * Function rfc_mx_sm_state_idle |
| * |
| * Description This function handles events when the multiplexer is in |
| * IDLE state. This state exists when connection is being |
| * initially established. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| void rfc_mx_sm_state_idle(tRFC_MCB* p_mcb, tRFC_MX_EVENT event, void* p_data) { |
| switch (event) { |
| case RFC_MX_EVENT_START_REQ: { |
| /* Initialize L2CAP MTU */ |
| p_mcb->peer_l2cap_mtu = L2CAP_DEFAULT_MTU - RFCOMM_MIN_OFFSET - 1; |
| |
| uint16_t lcid = L2CA_ConnectReq(BT_PSM_RFCOMM, p_mcb->bd_addr); |
| if (lcid == 0) { |
| LOG(ERROR) << __func__ << ": failed to open L2CAP channel for " |
| << p_mcb->bd_addr; |
| rfc_save_lcid_mcb(nullptr, p_mcb->lcid); |
| p_mcb->lcid = 0; |
| PORT_StartCnf(p_mcb, RFCOMM_ERROR); |
| return; |
| } |
| p_mcb->lcid = lcid; |
| /* Save entry for quicker access to mcb based on the LCID */ |
| rfc_save_lcid_mcb(p_mcb, p_mcb->lcid); |
| |
| p_mcb->state = RFC_MX_STATE_WAIT_CONN_CNF; |
| return; |
| } |
| |
| case RFC_MX_EVENT_CONN_IND: |
| |
| rfc_timer_start(p_mcb, RFCOMM_CONN_TIMEOUT); |
| |
| p_mcb->state = RFC_MX_STATE_CONFIGURE; |
| return; |
| |
| case RFC_MX_EVENT_SABME: |
| break; |
| |
| case RFC_MX_EVENT_UA: |
| case RFC_MX_EVENT_DM: |
| return; |
| |
| case RFC_MX_EVENT_DISC: |
| rfc_send_dm(p_mcb, RFCOMM_MX_DLCI, true); |
| return; |
| |
| case RFC_MX_EVENT_UIH: |
| rfc_send_dm(p_mcb, RFCOMM_MX_DLCI, false); |
| return; |
| |
| default: |
| RFCOMM_TRACE_ERROR("Mx error state %d event %d", p_mcb->state, event); |
| return; |
| } |
| RFCOMM_TRACE_EVENT("RFCOMM MX ignored - evt:%d in state:%d", event, |
| p_mcb->state); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function rfc_mx_sm_state_wait_conn_cnf |
| * |
| * Description This function handles events when the multiplexer is |
| * waiting for Connection Confirm from L2CAP. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| void rfc_mx_sm_state_wait_conn_cnf(tRFC_MCB* p_mcb, tRFC_MX_EVENT event, |
| void* p_data) { |
| RFCOMM_TRACE_EVENT("%s: evt %d", __func__, event); |
| switch (event) { |
| case RFC_MX_EVENT_START_REQ: |
| RFCOMM_TRACE_ERROR("Mx error state %d event %d", p_mcb->state, event); |
| return; |
| |
| /* There is some new timing so that Config Ind comes before security is |
| completed |
| so we are still waiting fo the confirmation. */ |
| case RFC_MX_EVENT_CONF_IND: |
| rfc_mx_conf_ind(p_mcb, (tL2CAP_CFG_INFO*)p_data); |
| return; |
| |
| case RFC_MX_EVENT_CONN_CNF: |
| if (*((uint16_t*)p_data) != L2CAP_SUCCESS) { |
| p_mcb->state = RFC_MX_STATE_IDLE; |
| |
| PORT_StartCnf(p_mcb, *((uint16_t*)p_data)); |
| return; |
| } |
| p_mcb->state = RFC_MX_STATE_CONFIGURE; |
| return; |
| |
| case RFC_MX_EVENT_DISC_IND: |
| p_mcb->state = RFC_MX_STATE_IDLE; |
| PORT_CloseInd(p_mcb); |
| return; |
| |
| case RFC_MX_EVENT_TIMEOUT: |
| p_mcb->state = RFC_MX_STATE_IDLE; |
| L2CA_DisconnectReq(p_mcb->lcid); |
| |
| /* we gave up outgoing connection request then try peer's request */ |
| if (p_mcb->pending_lcid) { |
| uint16_t i; |
| uint8_t handle; |
| |
| RFCOMM_TRACE_DEBUG( |
| "RFCOMM MX retry as acceptor in collision case - evt:%d in " |
| "state:%d", |
| event, p_mcb->state); |
| |
| rfc_save_lcid_mcb(NULL, p_mcb->lcid); |
| p_mcb->lcid = p_mcb->pending_lcid; |
| rfc_save_lcid_mcb(p_mcb, p_mcb->lcid); |
| |
| p_mcb->is_initiator = false; |
| |
| /* update direction bit */ |
| for (i = 0; i < RFCOMM_MAX_DLCI; i += 2) { |
| handle = p_mcb->port_handles[i]; |
| if (handle != 0) { |
| p_mcb->port_handles[i] = 0; |
| p_mcb->port_handles[i + 1] = handle; |
| rfc_cb.port.port[handle - 1].dlci += 1; |
| RFCOMM_TRACE_DEBUG("RFCOMM MX - DLCI:%d -> %d", i, |
| rfc_cb.port.port[handle - 1].dlci); |
| } |
| } |
| |
| rfc_mx_sm_execute(p_mcb, RFC_MX_EVENT_CONN_IND, nullptr); |
| } else { |
| PORT_CloseInd(p_mcb); |
| } |
| return; |
| default: |
| LOG_ERROR("Received unexpected event:%hu in state:%hhu", event, |
| p_mcb->state); |
| } |
| RFCOMM_TRACE_EVENT("RFCOMM MX ignored - evt:%d in state:%d", event, |
| p_mcb->state); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function rfc_mx_sm_state_configure |
| * |
| * Description This function handles events when the multiplexer in the |
| * configuration state. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| void rfc_mx_sm_state_configure(tRFC_MCB* p_mcb, tRFC_MX_EVENT event, |
| void* p_data) { |
| RFCOMM_TRACE_EVENT("%s: event %d", __func__, event); |
| switch (event) { |
| case RFC_MX_EVENT_START_REQ: |
| case RFC_MX_EVENT_CONN_CNF: |
| |
| RFCOMM_TRACE_ERROR("Mx error state %d event %d", p_mcb->state, event); |
| return; |
| |
| case RFC_MX_EVENT_CONF_IND: |
| rfc_mx_conf_ind(p_mcb, (tL2CAP_CFG_INFO*)p_data); |
| return; |
| |
| case RFC_MX_EVENT_CONF_CNF: |
| rfc_mx_conf_cnf(p_mcb, (uintptr_t)p_data); |
| return; |
| |
| case RFC_MX_EVENT_DISC_IND: |
| p_mcb->state = RFC_MX_STATE_IDLE; |
| PORT_CloseInd(p_mcb); |
| return; |
| |
| case RFC_MX_EVENT_TIMEOUT: |
| LOG(ERROR) << __func__ << ": L2CAP configuration timeout for " |
| << p_mcb->bd_addr; |
| p_mcb->state = RFC_MX_STATE_IDLE; |
| L2CA_DisconnectReq(p_mcb->lcid); |
| |
| PORT_StartCnf(p_mcb, RFCOMM_ERROR); |
| return; |
| default: |
| LOG_ERROR("Received unexpected event:%hu in state:%hhu", event, |
| p_mcb->state); |
| } |
| RFCOMM_TRACE_EVENT("RFCOMM MX ignored - evt:%d in state:%d", event, |
| p_mcb->state); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function rfc_mx_sm_sabme_wait_ua |
| * |
| * Description This function handles events when the multiplexer sent |
| * SABME and is waiting for UA reply. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| void rfc_mx_sm_sabme_wait_ua(tRFC_MCB* p_mcb, tRFC_MX_EVENT event, |
| UNUSED_ATTR void* p_data) { |
| RFCOMM_TRACE_EVENT("%s: event %d", __func__, event); |
| switch (event) { |
| case RFC_MX_EVENT_START_REQ: |
| case RFC_MX_EVENT_CONN_CNF: |
| RFCOMM_TRACE_ERROR("Mx error state %d event %d", p_mcb->state, event); |
| return; |
| |
| /* workaround: we don't support reconfig */ |
| /* commented out until we support reconfig |
| case RFC_MX_EVENT_CONF_IND: |
| rfc_mx_conf_ind (p_mcb, (tL2CAP_CFG_INFO *)p_data); |
| return; |
| |
| case RFC_MX_EVENT_CONF_CNF: |
| rfc_mx_conf_cnf (p_mcb, (tL2CAP_CFG_INFO *)p_data); |
| return; |
| */ |
| |
| case RFC_MX_EVENT_DISC_IND: |
| p_mcb->state = RFC_MX_STATE_IDLE; |
| PORT_CloseInd(p_mcb); |
| return; |
| |
| case RFC_MX_EVENT_UA: |
| rfc_timer_stop(p_mcb); |
| |
| p_mcb->state = RFC_MX_STATE_CONNECTED; |
| p_mcb->peer_ready = true; |
| |
| PORT_StartCnf(p_mcb, RFCOMM_SUCCESS); |
| return; |
| |
| case RFC_MX_EVENT_DM: |
| rfc_timer_stop(p_mcb); |
| FALLTHROUGH_INTENDED; /* FALLTHROUGH */ |
| |
| case RFC_MX_EVENT_CONF_IND: /* workaround: we don't support reconfig */ |
| case RFC_MX_EVENT_CONF_CNF: /* workaround: we don't support reconfig */ |
| case RFC_MX_EVENT_TIMEOUT: |
| p_mcb->state = RFC_MX_STATE_IDLE; |
| L2CA_DisconnectReq(p_mcb->lcid); |
| |
| PORT_StartCnf(p_mcb, RFCOMM_ERROR); |
| return; |
| default: |
| LOG_ERROR("Received unexpected event:%hu in state:%hhu", event, |
| p_mcb->state); |
| } |
| RFCOMM_TRACE_EVENT("RFCOMM MX ignored - evt:%d in state:%d", event, |
| p_mcb->state); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function rfc_mx_sm_state_wait_sabme |
| * |
| * Description This function handles events when the multiplexer is |
| * waiting for SABME on the acceptor side after configuration |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| void rfc_mx_sm_state_wait_sabme(tRFC_MCB* p_mcb, tRFC_MX_EVENT event, |
| void* p_data) { |
| RFCOMM_TRACE_EVENT("%s: event %d", __func__, event); |
| switch (event) { |
| case RFC_MX_EVENT_DISC_IND: |
| p_mcb->state = RFC_MX_STATE_IDLE; |
| PORT_CloseInd(p_mcb); |
| return; |
| |
| case RFC_MX_EVENT_SABME: |
| /* if we gave up outgoing connection request */ |
| if (p_mcb->pending_lcid) { |
| p_mcb->pending_lcid = 0; |
| |
| rfc_send_ua(p_mcb, RFCOMM_MX_DLCI); |
| |
| rfc_timer_stop(p_mcb); |
| p_mcb->state = RFC_MX_STATE_CONNECTED; |
| p_mcb->peer_ready = true; |
| |
| /* MX channel collision has been resolved, continue to open ports */ |
| PORT_StartCnf(p_mcb, RFCOMM_SUCCESS); |
| } else { |
| rfc_timer_stop(p_mcb); |
| PORT_StartInd(p_mcb); |
| } |
| return; |
| |
| case RFC_MX_EVENT_START_RSP: |
| if (*((uint16_t*)p_data) != RFCOMM_SUCCESS) |
| rfc_send_dm(p_mcb, RFCOMM_MX_DLCI, true); |
| else { |
| rfc_send_ua(p_mcb, RFCOMM_MX_DLCI); |
| |
| p_mcb->state = RFC_MX_STATE_CONNECTED; |
| p_mcb->peer_ready = true; |
| PORT_StartCnf(p_mcb, RFCOMM_SUCCESS); |
| } |
| return; |
| |
| case RFC_MX_EVENT_CONF_IND: /* workaround: we don't support reconfig */ |
| case RFC_MX_EVENT_CONF_CNF: /* workaround: we don't support reconfig */ |
| case RFC_MX_EVENT_TIMEOUT: |
| p_mcb->state = RFC_MX_STATE_IDLE; |
| L2CA_DisconnectReq(p_mcb->lcid); |
| |
| PORT_CloseInd(p_mcb); |
| return; |
| |
| default: |
| LOG_WARN("RFCOMM MX ignored - evt:%d in state:%d", event, p_mcb->state); |
| } |
| RFCOMM_TRACE_EVENT("RFCOMM MX ignored - evt:%d in state:%d", event, |
| p_mcb->state); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function rfc_mx_sm_state_connected |
| * |
| * Description This function handles events when the multiplexer is |
| * in the CONNECTED state |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| void rfc_mx_sm_state_connected(tRFC_MCB* p_mcb, tRFC_MX_EVENT event, |
| UNUSED_ATTR void* p_data) { |
| RFCOMM_TRACE_EVENT("%s: event %d", __func__, event); |
| |
| switch (event) { |
| case RFC_MX_EVENT_TIMEOUT: |
| case RFC_MX_EVENT_CLOSE_REQ: |
| rfc_timer_start(p_mcb, RFC_DISC_TIMEOUT); |
| p_mcb->state = RFC_MX_STATE_DISC_WAIT_UA; |
| rfc_send_disc(p_mcb, RFCOMM_MX_DLCI); |
| return; |
| |
| case RFC_MX_EVENT_DISC_IND: |
| p_mcb->state = RFC_MX_STATE_IDLE; |
| PORT_CloseInd(p_mcb); |
| return; |
| |
| case RFC_MX_EVENT_DISC: |
| /* Reply with UA. If initiator bring down L2CAP connection */ |
| /* If server wait for some time if client decide to reinitiate channel */ |
| rfc_send_ua(p_mcb, RFCOMM_MX_DLCI); |
| if (p_mcb->is_initiator) { |
| L2CA_DisconnectReq(p_mcb->lcid); |
| } |
| /* notify all ports that connection is gone */ |
| PORT_CloseInd(p_mcb); |
| return; |
| default: |
| LOG_ERROR("Received unexpected event:%hu in state:%hhu", event, |
| p_mcb->state); |
| } |
| RFCOMM_TRACE_EVENT("RFCOMM MX ignored - evt:%d in state:%d", event, |
| p_mcb->state); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function rfc_mx_sm_state_disc_wait_ua |
| * |
| * Description This function handles events when the multiplexer sent |
| * DISC and is waiting for UA reply. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| void rfc_mx_sm_state_disc_wait_ua(tRFC_MCB* p_mcb, tRFC_MX_EVENT event, |
| void* p_data) { |
| BT_HDR* p_buf; |
| |
| RFCOMM_TRACE_EVENT("%s: event %d", __func__, event); |
| switch (event) { |
| case RFC_MX_EVENT_UA: |
| case RFC_MX_EVENT_DM: |
| case RFC_MX_EVENT_TIMEOUT: |
| L2CA_DisconnectReq(p_mcb->lcid); |
| |
| if (p_mcb->restart_required) { |
| /* Start Request was received while disconnecting. Execute it again */ |
| uint16_t lcid = L2CA_ConnectReq(BT_PSM_RFCOMM, p_mcb->bd_addr); |
| if (lcid == 0) { |
| rfc_save_lcid_mcb(NULL, p_mcb->lcid); |
| p_mcb->lcid = 0; |
| PORT_StartCnf(p_mcb, RFCOMM_ERROR); |
| return; |
| } |
| p_mcb->lcid = lcid; |
| /* Save entry for quicker access to mcb based on the LCID */ |
| rfc_save_lcid_mcb(p_mcb, p_mcb->lcid); |
| |
| /* clean up before reuse it */ |
| while ((p_buf = (BT_HDR*)fixed_queue_try_dequeue(p_mcb->cmd_q)) != NULL) |
| osi_free(p_buf); |
| |
| rfc_timer_start(p_mcb, RFC_MCB_INIT_INACT_TIMER); |
| |
| p_mcb->is_initiator = true; |
| p_mcb->restart_required = false; |
| |
| p_mcb->state = RFC_MX_STATE_WAIT_CONN_CNF; |
| return; |
| } |
| rfc_release_multiplexer_channel(p_mcb); |
| return; |
| |
| case RFC_MX_EVENT_DISC: |
| rfc_send_ua(p_mcb, RFCOMM_MX_DLCI); |
| return; |
| |
| case RFC_MX_EVENT_UIH: |
| osi_free(p_data); |
| rfc_send_dm(p_mcb, RFCOMM_MX_DLCI, false); |
| return; |
| |
| case RFC_MX_EVENT_START_REQ: |
| p_mcb->restart_required = true; |
| return; |
| |
| case RFC_MX_EVENT_DISC_IND: |
| p_mcb->state = RFC_MX_STATE_IDLE; |
| PORT_CloseInd(p_mcb); |
| return; |
| |
| case RFC_MX_EVENT_CLOSE_REQ: |
| return; |
| |
| case RFC_MX_EVENT_QOS_VIOLATION_IND: |
| break; |
| default: |
| LOG_ERROR("Received unexpected event:%hu in state:%hhu", event, |
| p_mcb->state); |
| } |
| RFCOMM_TRACE_EVENT("RFCOMM MX ignored - evt:%d in state:%d", event, |
| p_mcb->state); |
| } |
| |
| void rfc_on_l2cap_error(uint16_t lcid, uint16_t result) { |
| tRFC_MCB* p_mcb = rfc_find_lcid_mcb(lcid); |
| if (p_mcb == nullptr) return; |
| |
| if (result == L2CAP_CONN_OTHER_ERROR) { |
| /* if peer rejects our connect request but peer's connect request is pending |
| */ |
| if (p_mcb->pending_lcid) { |
| RFCOMM_TRACE_DEBUG( |
| "RFCOMM_ConnectCnf retry as acceptor on pending LCID(0x%x)", |
| p_mcb->pending_lcid); |
| |
| /* remove mcb from mapping table */ |
| rfc_save_lcid_mcb(NULL, p_mcb->lcid); |
| |
| p_mcb->lcid = p_mcb->pending_lcid; |
| p_mcb->is_initiator = false; |
| p_mcb->state = RFC_MX_STATE_IDLE; |
| |
| /* store mcb into mapping table */ |
| rfc_save_lcid_mcb(p_mcb, p_mcb->lcid); |
| |
| /* update direction bit */ |
| for (int i = 0; i < RFCOMM_MAX_DLCI; i += 2) { |
| uint8_t handle = p_mcb->port_handles[i]; |
| if (handle != 0) { |
| p_mcb->port_handles[i] = 0; |
| p_mcb->port_handles[i + 1] = handle; |
| rfc_cb.port.port[handle - 1].dlci += 1; |
| RFCOMM_TRACE_DEBUG("RFCOMM MX, port_handle=%d, DLCI[%d->%d]", handle, |
| i, rfc_cb.port.port[handle - 1].dlci); |
| } |
| } |
| rfc_mx_sm_execute(p_mcb, RFC_MX_EVENT_CONN_IND, nullptr); |
| if (p_mcb->pending_configure_complete) { |
| LOG_INFO("Configuration of the pending connection was completed"); |
| p_mcb->pending_configure_complete = false; |
| uintptr_t result_as_ptr = L2CAP_CFG_OK; |
| rfc_mx_sm_execute(p_mcb, RFC_MX_EVENT_CONF_IND, |
| &p_mcb->pending_cfg_info); |
| rfc_mx_sm_execute(p_mcb, RFC_MX_EVENT_CONF_CNF, (void*)result_as_ptr); |
| } |
| return; |
| } |
| |
| p_mcb->lcid = lcid; |
| rfc_mx_sm_execute(p_mcb, RFC_MX_EVENT_CONN_CNF, &result); |
| } else if (result == L2CAP_CFG_FAILED_NO_REASON) { |
| LOG(ERROR) << __func__ << ": failed to configure L2CAP for " |
| << p_mcb->bd_addr; |
| if (p_mcb->is_initiator) { |
| LOG(ERROR) << __func__ << ": disconnect L2CAP due to config failure for " |
| << p_mcb->bd_addr; |
| PORT_StartCnf(p_mcb, result); |
| L2CA_DisconnectReq(p_mcb->lcid); |
| } |
| rfc_release_multiplexer_channel(p_mcb); |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * Function rfc_mx_conf_cnf |
| * |
| * Description This function handles L2CA_ConfigCnf message from the |
| * L2CAP. If result is not success tell upper layer that |
| * start has not been accepted. If initiator send SABME |
| * on DLCI 0. T1 is still running. |
| * |
| ******************************************************************************/ |
| static void rfc_mx_conf_cnf(tRFC_MCB* p_mcb, uint16_t result) { |
| if (p_mcb->state == RFC_MX_STATE_CONFIGURE) { |
| if (p_mcb->is_initiator) { |
| p_mcb->state = RFC_MX_STATE_SABME_WAIT_UA; |
| rfc_send_sabme(p_mcb, RFCOMM_MX_DLCI); |
| rfc_timer_start(p_mcb, RFC_T1_TIMEOUT); |
| } else { |
| p_mcb->state = RFC_MX_STATE_WAIT_SABME; |
| rfc_timer_start( |
| p_mcb, RFCOMM_CONN_TIMEOUT); /* - increased from T2=20 to CONN=120 |
| to allow the user more than 10 sec to type in the |
| pin which can be e.g. 16 digits */ |
| } |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * Function rfc_mx_conf_ind |
| * |
| * Description This function handles L2CA_ConfigInd message from the |
| * L2CAP. Send the L2CA_ConfigRsp message. |
| * |
| ******************************************************************************/ |
| static void rfc_mx_conf_ind(tRFC_MCB* p_mcb, tL2CAP_CFG_INFO* p_cfg) { |
| /* Save peer L2CAP MTU if present */ |
| /* RFCOMM adds 3-4 bytes in the beginning and 1 bytes FCS */ |
| if (p_cfg->mtu_present) { |
| p_mcb->peer_l2cap_mtu = p_cfg->mtu - RFCOMM_MIN_OFFSET - 1; |
| } else { |
| p_mcb->peer_l2cap_mtu = L2CAP_DEFAULT_MTU - RFCOMM_MIN_OFFSET - 1; |
| } |
| } |
