| /****************************************************************************** |
| * |
| * 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 the L2CAP channel state machine |
| * |
| ******************************************************************************/ |
| #define LOG_TAG "l2c_csm" |
| |
| #include <string> |
| |
| #include "bt_target.h" |
| #include "common/time_util.h" |
| #include "l2c_int.h" |
| #include "l2cdefs.h" |
| #include "osi/include/allocator.h" |
| #include "osi/include/log.h" |
| #include "stack/btm/btm_sec.h" |
| #include "stack/include/acl_api.h" |
| #include "stack/include/bt_hdr.h" |
| |
| #include <base/logging.h> |
| |
| /******************************************************************************/ |
| /* 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 l2c_csm_closed(tL2C_CCB* p_ccb, tL2CEVT event, void* p_data); |
| static void l2c_csm_orig_w4_sec_comp(tL2C_CCB* p_ccb, tL2CEVT event, |
| void* p_data); |
| static void l2c_csm_term_w4_sec_comp(tL2C_CCB* p_ccb, tL2CEVT event, |
| void* p_data); |
| static void l2c_csm_w4_l2cap_connect_rsp(tL2C_CCB* p_ccb, tL2CEVT event, |
| void* p_data); |
| static void l2c_csm_w4_l2ca_connect_rsp(tL2C_CCB* p_ccb, tL2CEVT event, |
| void* p_data); |
| static void l2c_csm_config(tL2C_CCB* p_ccb, tL2CEVT event, void* p_data); |
| static void l2c_csm_open(tL2C_CCB* p_ccb, tL2CEVT event, void* p_data); |
| static void l2c_csm_w4_l2cap_disconnect_rsp(tL2C_CCB* p_ccb, tL2CEVT event, |
| void* p_data); |
| static void l2c_csm_w4_l2ca_disconnect_rsp(tL2C_CCB* p_ccb, tL2CEVT event, |
| void* p_data); |
| |
| static const char* l2c_csm_get_event_name(tL2CEVT event); |
| |
| // Send a connect response with result OK and adjust the state machine |
| static void l2c_csm_send_connect_rsp(tL2C_CCB* p_ccb) { |
| l2c_csm_execute(p_ccb, L2CEVT_L2CA_CONNECT_RSP, NULL); |
| } |
| |
| // Send a config request and adjust the state machine |
| static void l2c_csm_send_config_req(tL2C_CCB* p_ccb) { |
| tL2CAP_CFG_INFO config{}; |
| config.mtu_present = true; |
| config.mtu = p_ccb->p_rcb->my_mtu; |
| p_ccb->max_rx_mtu = config.mtu; |
| if (p_ccb->p_rcb->ertm_info.preferred_mode != L2CAP_FCR_BASIC_MODE) { |
| config.fcr_present = true; |
| config.fcr = kDefaultErtmOptions; |
| } |
| p_ccb->our_cfg = config; |
| l2c_csm_execute(p_ccb, L2CEVT_L2CA_CONFIG_REQ, &config); |
| } |
| |
| // Send a config response with result OK and adjust the state machine |
| static void l2c_csm_send_config_rsp_ok(tL2C_CCB* p_ccb) { |
| tL2CAP_CFG_INFO config{}; |
| config.result = L2CAP_CFG_OK; |
| l2c_csm_execute(p_ccb, L2CEVT_L2CA_CONFIG_RSP, &config); |
| } |
| |
| static void l2c_csm_send_disconnect_rsp(tL2C_CCB* p_ccb) { |
| l2c_csm_execute(p_ccb, L2CEVT_L2CA_DISCONNECT_RSP, NULL); |
| } |
| |
| static void l2c_csm_indicate_connection_open(tL2C_CCB* p_ccb) { |
| if (p_ccb->connection_initiator == L2CAP_INITIATOR_LOCAL) { |
| (*p_ccb->p_rcb->api.pL2CA_ConnectCfm_Cb)(p_ccb->local_cid, L2CAP_CONN_OK); |
| } else { |
| (*p_ccb->p_rcb->api.pL2CA_ConnectInd_Cb)( |
| p_ccb->p_lcb->remote_bd_addr, p_ccb->local_cid, p_ccb->p_rcb->psm, |
| p_ccb->remote_id); |
| } |
| if (p_ccb->chnl_state == CST_OPEN && !p_ccb->p_lcb->is_transport_ble()) { |
| (*p_ccb->p_rcb->api.pL2CA_ConfigCfm_Cb)( |
| p_ccb->local_cid, p_ccb->connection_initiator, &p_ccb->peer_cfg); |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * Function l2c_csm_execute |
| * |
| * Description This function executes the state machine. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| void l2c_csm_execute(tL2C_CCB* p_ccb, tL2CEVT event, void* p_data) { |
| if (!l2cu_is_ccb_active(p_ccb)) { |
| LOG_WARN("CCB not in use, event (%d) cannot be processed", event); |
| return; |
| } |
| |
| LOG_DEBUG("Entry chnl_state=%s [%d], event=%s [%d]", |
| channel_state_text(p_ccb->chnl_state).c_str(), p_ccb->chnl_state, |
| l2c_csm_get_event_name(event), event); |
| |
| switch (p_ccb->chnl_state) { |
| case CST_CLOSED: |
| l2c_csm_closed(p_ccb, event, p_data); |
| break; |
| |
| case CST_ORIG_W4_SEC_COMP: |
| l2c_csm_orig_w4_sec_comp(p_ccb, event, p_data); |
| break; |
| |
| case CST_TERM_W4_SEC_COMP: |
| l2c_csm_term_w4_sec_comp(p_ccb, event, p_data); |
| break; |
| |
| case CST_W4_L2CAP_CONNECT_RSP: |
| l2c_csm_w4_l2cap_connect_rsp(p_ccb, event, p_data); |
| break; |
| |
| case CST_W4_L2CA_CONNECT_RSP: |
| l2c_csm_w4_l2ca_connect_rsp(p_ccb, event, p_data); |
| break; |
| |
| case CST_CONFIG: |
| l2c_csm_config(p_ccb, event, p_data); |
| break; |
| |
| case CST_OPEN: |
| l2c_csm_open(p_ccb, event, p_data); |
| break; |
| |
| case CST_W4_L2CAP_DISCONNECT_RSP: |
| l2c_csm_w4_l2cap_disconnect_rsp(p_ccb, event, p_data); |
| break; |
| |
| case CST_W4_L2CA_DISCONNECT_RSP: |
| l2c_csm_w4_l2ca_disconnect_rsp(p_ccb, event, p_data); |
| break; |
| |
| default: |
| LOG_ERROR("Unhandled state %d, event %d", p_ccb->chnl_state, event); |
| break; |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * Function l2c_csm_closed |
| * |
| * Description This function handles events when the channel is in |
| * CLOSED state. This state exists only when the link is |
| * being initially established. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| static void l2c_csm_closed(tL2C_CCB* p_ccb, tL2CEVT event, void* p_data) { |
| tL2C_CONN_INFO* p_ci = (tL2C_CONN_INFO*)p_data; |
| uint16_t local_cid = p_ccb->local_cid; |
| tL2CA_DISCONNECT_IND_CB* disconnect_ind; |
| |
| if (p_ccb->p_rcb == NULL) { |
| LOG_ERROR("LCID: 0x%04x st: CLOSED evt: %s p_rcb == NULL", |
| p_ccb->local_cid, l2c_csm_get_event_name(event)); |
| return; |
| } |
| |
| disconnect_ind = p_ccb->p_rcb->api.pL2CA_DisconnectInd_Cb; |
| |
| LOG_DEBUG("LCID: 0x%04x st: CLOSED evt: %s", p_ccb->local_cid, |
| l2c_csm_get_event_name(event)); |
| |
| switch (event) { |
| case L2CEVT_LP_DISCONNECT_IND: /* Link was disconnected */ |
| LOG_DEBUG("Calling Disconnect_Ind_Cb(), CID: 0x%04x No Conf Needed", |
| p_ccb->local_cid); |
| l2cu_release_ccb(p_ccb); |
| (*disconnect_ind)(local_cid, false); |
| break; |
| |
| case L2CEVT_LP_CONNECT_CFM: /* Link came up */ |
| if (p_ccb->p_lcb->transport == BT_TRANSPORT_LE) { |
| p_ccb->chnl_state = CST_ORIG_W4_SEC_COMP; |
| l2ble_sec_access_req(p_ccb->p_lcb->remote_bd_addr, p_ccb->p_rcb->psm, |
| true, &l2c_link_sec_comp2, p_ccb); |
| } else { |
| p_ccb->chnl_state = CST_ORIG_W4_SEC_COMP; |
| btm_sec_l2cap_access_req(p_ccb->p_lcb->remote_bd_addr, |
| p_ccb->p_rcb->psm, true, &l2c_link_sec_comp, |
| p_ccb); |
| } |
| break; |
| |
| case L2CEVT_LP_CONNECT_CFM_NEG: /* Link failed */ |
| if (p_ci->status == HCI_ERR_CONNECTION_EXISTS) { |
| btm_acl_notif_conn_collision(p_ccb->p_lcb->remote_bd_addr); |
| } else { |
| l2cu_release_ccb(p_ccb); |
| (*p_ccb->p_rcb->api.pL2CA_Error_Cb)(local_cid, L2CAP_CONN_OTHER_ERROR); |
| } |
| break; |
| |
| case L2CEVT_L2CA_CREDIT_BASED_CONNECT_REQ: /* API connect request */ |
| case L2CEVT_L2CA_CONNECT_REQ: |
| if (p_ccb->p_lcb->transport == BT_TRANSPORT_LE) { |
| p_ccb->chnl_state = CST_ORIG_W4_SEC_COMP; |
| l2ble_sec_access_req(p_ccb->p_lcb->remote_bd_addr, p_ccb->p_rcb->psm, |
| true, &l2c_link_sec_comp2, p_ccb); |
| } else { |
| if (!BTM_SetLinkPolicyActiveMode(p_ccb->p_lcb->remote_bd_addr)) { |
| LOG_WARN("Unable to set link policy active"); |
| } |
| /* If sec access does not result in started SEC_COM or COMP_NEG are |
| * already processed */ |
| if (btm_sec_l2cap_access_req( |
| p_ccb->p_lcb->remote_bd_addr, p_ccb->p_rcb->psm, true, |
| &l2c_link_sec_comp, p_ccb) == BTM_CMD_STARTED) { |
| p_ccb->chnl_state = CST_ORIG_W4_SEC_COMP; |
| } |
| } |
| break; |
| |
| case L2CEVT_SEC_COMP: |
| p_ccb->chnl_state = CST_W4_L2CAP_CONNECT_RSP; |
| |
| /* Wait for the info resp in this state before sending connect req (if |
| * needed) */ |
| if (!p_ccb->p_lcb->w4_info_rsp) { |
| /* Need to have at least one compatible channel to continue */ |
| if (!l2c_fcr_chk_chan_modes(p_ccb)) { |
| l2cu_release_ccb(p_ccb); |
| (*p_ccb->p_rcb->api.pL2CA_Error_Cb)(local_cid, |
| L2CAP_CONN_OTHER_ERROR); |
| } else { |
| l2cu_send_peer_connect_req(p_ccb); |
| alarm_set_on_mloop(p_ccb->l2c_ccb_timer, |
| L2CAP_CHNL_CONNECT_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb); |
| } |
| } |
| break; |
| |
| case L2CEVT_SEC_COMP_NEG: /* something is really bad with security */ |
| l2cu_release_ccb(p_ccb); |
| (*p_ccb->p_rcb->api.pL2CA_Error_Cb)(local_cid, L2CAP_CONN_OTHER_ERROR); |
| break; |
| |
| case L2CEVT_L2CAP_CREDIT_BASED_CONNECT_REQ: /* Peer connect request */ |
| case L2CEVT_L2CAP_CONNECT_REQ: |
| /* stop link timer to avoid race condition between A2MP, Security, and |
| * L2CAP */ |
| alarm_cancel(p_ccb->p_lcb->l2c_lcb_timer); |
| |
| if (p_ccb->p_lcb->transport == BT_TRANSPORT_LE) { |
| p_ccb->chnl_state = CST_TERM_W4_SEC_COMP; |
| tL2CAP_LE_RESULT_CODE result = l2ble_sec_access_req( |
| p_ccb->p_lcb->remote_bd_addr, p_ccb->p_rcb->psm, false, |
| &l2c_link_sec_comp2, p_ccb); |
| |
| switch (result) { |
| case L2CAP_LE_RESULT_INSUFFICIENT_AUTHORIZATION: |
| case L2CAP_LE_RESULT_UNACCEPTABLE_PARAMETERS: |
| case L2CAP_LE_RESULT_INVALID_PARAMETERS: |
| case L2CAP_LE_RESULT_INSUFFICIENT_AUTHENTICATION: |
| case L2CAP_LE_RESULT_INSUFFICIENT_ENCRYP_KEY_SIZE: |
| case L2CAP_LE_RESULT_INSUFFICIENT_ENCRYP: |
| l2cu_reject_ble_connection(p_ccb, p_ccb->remote_id, result); |
| l2cu_release_ccb(p_ccb); |
| break; |
| case L2CAP_LE_RESULT_CONN_OK: |
| case L2CAP_LE_RESULT_NO_PSM: |
| case L2CAP_LE_RESULT_NO_RESOURCES: |
| case L2CAP_LE_RESULT_INVALID_SOURCE_CID: |
| case L2CAP_LE_RESULT_SOURCE_CID_ALREADY_ALLOCATED: |
| break; |
| } |
| } else { |
| if (!BTM_SetLinkPolicyActiveMode(p_ccb->p_lcb->remote_bd_addr)) { |
| LOG_WARN("Unable to set link policy active"); |
| } |
| p_ccb->chnl_state = CST_TERM_W4_SEC_COMP; |
| auto status = btm_sec_l2cap_access_req(p_ccb->p_lcb->remote_bd_addr, |
| p_ccb->p_rcb->psm, false, |
| &l2c_link_sec_comp, p_ccb); |
| if (status == BTM_CMD_STARTED) { |
| // started the security process, tell the peer to set a longer timer |
| l2cu_send_peer_connect_rsp(p_ccb, L2CAP_CONN_PENDING, 0); |
| } else { |
| LOG_INFO("Check security for psm 0x%04x, status %d", |
| p_ccb->p_rcb->psm, status); |
| } |
| } |
| break; |
| |
| case L2CEVT_TIMEOUT: |
| l2cu_release_ccb(p_ccb); |
| (*p_ccb->p_rcb->api.pL2CA_Error_Cb)(local_cid, L2CAP_CONN_OTHER_ERROR); |
| break; |
| |
| case L2CEVT_L2CAP_DATA: /* Peer data packet rcvd */ |
| case L2CEVT_L2CA_DATA_WRITE: /* Upper layer data to send */ |
| osi_free(p_data); |
| break; |
| |
| case L2CEVT_L2CA_DISCONNECT_REQ: /* Upper wants to disconnect */ |
| l2cu_release_ccb(p_ccb); |
| break; |
| |
| default: |
| LOG_ERROR("Handling unexpected event:%s", l2c_csm_get_event_name(event)); |
| } |
| LOG_DEBUG("Exit chnl_state=%s [%d], event=%s [%d]", |
| channel_state_text(p_ccb->chnl_state).c_str(), p_ccb->chnl_state, |
| l2c_csm_get_event_name(event), event); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function l2c_csm_orig_w4_sec_comp |
| * |
| * Description This function handles events when the channel is in |
| * CST_ORIG_W4_SEC_COMP state. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| static void l2c_csm_orig_w4_sec_comp(tL2C_CCB* p_ccb, tL2CEVT event, |
| void* p_data) { |
| tL2CA_DISCONNECT_IND_CB* disconnect_ind = |
| p_ccb->p_rcb->api.pL2CA_DisconnectInd_Cb; |
| uint16_t local_cid = p_ccb->local_cid; |
| |
| LOG_DEBUG("%s - LCID: 0x%04x st: ORIG_W4_SEC_COMP evt: %s", |
| ((p_ccb->p_lcb) && (p_ccb->p_lcb->transport == BT_TRANSPORT_LE)) |
| ? "LE " |
| : "", |
| p_ccb->local_cid, l2c_csm_get_event_name(event)); |
| |
| switch (event) { |
| case L2CEVT_LP_DISCONNECT_IND: /* Link was disconnected */ |
| LOG_DEBUG("Calling Disconnect_Ind_Cb(), CID: 0x%04x No Conf Needed", |
| p_ccb->local_cid); |
| l2cu_release_ccb(p_ccb); |
| (*disconnect_ind)(local_cid, false); |
| break; |
| |
| case L2CEVT_SEC_RE_SEND_CMD: /* BTM has enough info to proceed */ |
| case L2CEVT_LP_CONNECT_CFM: /* Link came up */ |
| if (p_ccb->p_lcb->transport == BT_TRANSPORT_LE) { |
| l2ble_sec_access_req(p_ccb->p_lcb->remote_bd_addr, p_ccb->p_rcb->psm, |
| false, &l2c_link_sec_comp2, p_ccb); |
| } else { |
| btm_sec_l2cap_access_req(p_ccb->p_lcb->remote_bd_addr, |
| p_ccb->p_rcb->psm, true, &l2c_link_sec_comp, |
| p_ccb); |
| } |
| break; |
| |
| case L2CEVT_SEC_COMP: /* Security completed success */ |
| /* Wait for the info resp in this state before sending connect req (if |
| * needed) */ |
| p_ccb->chnl_state = CST_W4_L2CAP_CONNECT_RSP; |
| if (p_ccb->p_lcb->transport == BT_TRANSPORT_LE) { |
| alarm_set_on_mloop(p_ccb->l2c_ccb_timer, L2CAP_CHNL_CONNECT_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb); |
| l2cble_credit_based_conn_req(p_ccb); /* Start Connection */ |
| } else { |
| if (!p_ccb->p_lcb->w4_info_rsp) { |
| /* Need to have at least one compatible channel to continue */ |
| if (!l2c_fcr_chk_chan_modes(p_ccb)) { |
| l2cu_release_ccb(p_ccb); |
| (*p_ccb->p_rcb->api.pL2CA_Error_Cb)(local_cid, |
| L2CAP_CONN_OTHER_ERROR); |
| } else { |
| alarm_set_on_mloop(p_ccb->l2c_ccb_timer, |
| L2CAP_CHNL_CONNECT_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb); |
| l2cu_send_peer_connect_req(p_ccb); /* Start Connection */ |
| } |
| } |
| } |
| break; |
| |
| case L2CEVT_SEC_COMP_NEG: |
| /* If last channel immediately disconnect the ACL for better security. |
| Also prevents a race condition between BTM and L2CAP */ |
| if ((p_ccb == p_ccb->p_lcb->ccb_queue.p_first_ccb) && |
| (p_ccb == p_ccb->p_lcb->ccb_queue.p_last_ccb)) { |
| p_ccb->p_lcb->idle_timeout = 0; |
| } |
| |
| l2cu_release_ccb(p_ccb); |
| (*p_ccb->p_rcb->api.pL2CA_Error_Cb)(local_cid, L2CAP_CONN_OTHER_ERROR); |
| break; |
| |
| case L2CEVT_L2CA_DATA_WRITE: /* Upper layer data to send */ |
| case L2CEVT_L2CAP_DATA: /* Peer data packet rcvd */ |
| osi_free(p_data); |
| break; |
| |
| case L2CEVT_L2CA_DISCONNECT_REQ: /* Upper wants to disconnect */ |
| /* Tell security manager to abort */ |
| btm_sec_abort_access_req(p_ccb->p_lcb->remote_bd_addr); |
| |
| l2cu_release_ccb(p_ccb); |
| break; |
| |
| default: |
| LOG_ERROR("Handling unexpected event:%s", l2c_csm_get_event_name(event)); |
| } |
| LOG_DEBUG("Exit chnl_state=%s [%d], event=%s [%d]", |
| channel_state_text(p_ccb->chnl_state).c_str(), p_ccb->chnl_state, |
| l2c_csm_get_event_name(event), event); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function l2c_csm_term_w4_sec_comp |
| * |
| * Description This function handles events when the channel is in |
| * CST_TERM_W4_SEC_COMP state. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| static void l2c_csm_term_w4_sec_comp(tL2C_CCB* p_ccb, tL2CEVT event, |
| void* p_data) { |
| LOG_DEBUG("LCID: 0x%04x st: TERM_W4_SEC_COMP evt: %s", p_ccb->local_cid, |
| l2c_csm_get_event_name(event)); |
| |
| switch (event) { |
| case L2CEVT_LP_DISCONNECT_IND: /* Link was disconnected */ |
| /* Tell security manager to abort */ |
| btm_sec_abort_access_req(p_ccb->p_lcb->remote_bd_addr); |
| |
| l2cu_release_ccb(p_ccb); |
| break; |
| |
| case L2CEVT_SEC_COMP: |
| p_ccb->chnl_state = CST_W4_L2CA_CONNECT_RSP; |
| |
| /* Wait for the info resp in next state before sending connect ind (if |
| * needed) */ |
| if (!p_ccb->p_lcb->w4_info_rsp) { |
| LOG_DEBUG("Not waiting for info response, sending connect response"); |
| /* Don't need to get info from peer or already retrieved so continue */ |
| alarm_set_on_mloop(p_ccb->l2c_ccb_timer, L2CAP_CHNL_CONNECT_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb); |
| |
| if (p_ccb->p_lcb->transport != BT_TRANSPORT_LE) { |
| LOG_DEBUG("Not LE connection, sending configure request"); |
| l2c_csm_send_connect_rsp(p_ccb); |
| l2c_csm_send_config_req(p_ccb); |
| } else { |
| if (p_ccb->ecoc) { |
| /* Handle Credit Based Connection */ |
| LOG_DEBUG("Calling CreditBasedConnect_Ind_Cb(), num of cids: %d", |
| p_ccb->p_lcb->pending_ecoc_conn_cnt); |
| |
| std::vector<uint16_t> pending_cids; |
| for (int i = 0; i < p_ccb->p_lcb->pending_ecoc_conn_cnt; i++) { |
| uint16_t cid = p_ccb->p_lcb->pending_ecoc_connection_cids[i]; |
| if (cid != 0) pending_cids.push_back(cid); |
| } |
| |
| (*p_ccb->p_rcb->api.pL2CA_CreditBasedConnectInd_Cb)( |
| p_ccb->p_lcb->remote_bd_addr, pending_cids, p_ccb->p_rcb->psm, |
| p_ccb->peer_cfg.mtu, p_ccb->remote_id); |
| } else { |
| /* Handle BLE CoC */ |
| LOG_DEBUG("Calling Connect_Ind_Cb(), CID: 0x%04x", |
| p_ccb->local_cid); |
| l2c_csm_send_connect_rsp(p_ccb); |
| l2c_csm_indicate_connection_open(p_ccb); |
| } |
| } |
| } else { |
| /* |
| ** L2CAP Connect Response will be sent out by 3 sec timer expiration |
| ** because Bluesoleil doesn't respond to L2CAP Information Request. |
| ** Bluesoleil seems to disconnect ACL link as failure case, because |
| ** it takes too long (4~7secs) to get response. |
| ** product version : Bluesoleil 2.1.1.0 EDR Release 060123 |
| ** stack version : 05.04.11.20060119 |
| */ |
| |
| /* Cancel ccb timer as security complete. waiting for w4_info_rsp |
| ** once info rsp received, connection rsp timer will be started |
| ** while sending connection ind to profiles |
| */ |
| alarm_cancel(p_ccb->l2c_ccb_timer); |
| |
| /* Waiting for the info resp, tell the peer to set a longer timer */ |
| LOG_DEBUG("Waiting for info response, sending connect pending"); |
| l2cu_send_peer_connect_rsp(p_ccb, L2CAP_CONN_PENDING, 0); |
| } |
| break; |
| |
| case L2CEVT_SEC_COMP_NEG: |
| if (((tL2C_CONN_INFO*)p_data)->status == BTM_DELAY_CHECK) { |
| /* start a timer - encryption change not received before L2CAP connect |
| * req */ |
| alarm_set_on_mloop(p_ccb->l2c_ccb_timer, |
| L2CAP_DELAY_CHECK_SM4_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb); |
| } else { |
| if (p_ccb->p_lcb->transport == BT_TRANSPORT_LE) |
| l2cu_reject_ble_connection( |
| p_ccb, p_ccb->remote_id, |
| L2CAP_LE_RESULT_INSUFFICIENT_AUTHENTICATION); |
| else |
| l2cu_send_peer_connect_rsp(p_ccb, L2CAP_CONN_SECURITY_BLOCK, 0); |
| l2cu_release_ccb(p_ccb); |
| } |
| break; |
| |
| case L2CEVT_L2CA_DATA_WRITE: /* Upper layer data to send */ |
| case L2CEVT_L2CAP_DATA: /* Peer data packet rcvd */ |
| osi_free(p_data); |
| break; |
| |
| case L2CEVT_L2CA_DISCONNECT_REQ: /* Upper wants to disconnect */ |
| l2cu_release_ccb(p_ccb); |
| break; |
| |
| case L2CEVT_L2CAP_DISCONNECT_REQ: /* Peer disconnected request */ |
| l2cu_send_peer_disc_rsp(p_ccb->p_lcb, p_ccb->remote_id, p_ccb->local_cid, |
| p_ccb->remote_cid); |
| |
| /* Tell security manager to abort */ |
| btm_sec_abort_access_req(p_ccb->p_lcb->remote_bd_addr); |
| |
| l2cu_release_ccb(p_ccb); |
| break; |
| |
| case L2CEVT_TIMEOUT: |
| /* SM4 related. */ |
| acl_disconnect_from_handle(p_ccb->p_lcb->Handle(), HCI_ERR_AUTH_FAILURE); |
| break; |
| |
| case L2CEVT_SEC_RE_SEND_CMD: /* BTM has enough info to proceed */ |
| btm_sec_l2cap_access_req(p_ccb->p_lcb->remote_bd_addr, p_ccb->p_rcb->psm, |
| false, &l2c_link_sec_comp, p_ccb); |
| break; |
| |
| default: |
| LOG_ERROR("Handling unexpected event:%s", l2c_csm_get_event_name(event)); |
| } |
| LOG_DEBUG("Exit chnl_state=%s [%d], event=%s [%d]", |
| channel_state_text(p_ccb->chnl_state).c_str(), p_ccb->chnl_state, |
| l2c_csm_get_event_name(event), event); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function l2c_csm_w4_l2cap_connect_rsp |
| * |
| * Description This function handles events when the channel is in |
| * CST_W4_L2CAP_CONNECT_RSP state. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| static void l2c_csm_w4_l2cap_connect_rsp(tL2C_CCB* p_ccb, tL2CEVT event, |
| void* p_data) { |
| tL2C_CONN_INFO* p_ci = (tL2C_CONN_INFO*)p_data; |
| tL2CA_DISCONNECT_IND_CB* disconnect_ind = |
| p_ccb->p_rcb->api.pL2CA_DisconnectInd_Cb; |
| tL2CA_CREDIT_BASED_CONNECT_CFM_CB* credit_based_connect_cfm = |
| p_ccb->p_rcb->api.pL2CA_CreditBasedConnectCfm_Cb; |
| uint16_t local_cid = p_ccb->local_cid; |
| tL2C_LCB* p_lcb = p_ccb->p_lcb; |
| |
| LOG_DEBUG("LCID: 0x%04x st: W4_L2CAP_CON_RSP evt: %s", p_ccb->local_cid, |
| l2c_csm_get_event_name(event)); |
| |
| switch (event) { |
| case L2CEVT_LP_DISCONNECT_IND: /* Link was disconnected */ |
| /* Send disc indication unless peer to peer race condition AND normal |
| * disconnect */ |
| /* *((uint8_t *)p_data) != HCI_ERR_PEER_USER happens when peer device try |
| * to disconnect for normal reason */ |
| p_ccb->chnl_state = CST_CLOSED; |
| if ((p_ccb->flags & CCB_FLAG_NO_RETRY) || !p_data || |
| (*((uint8_t*)p_data) != HCI_ERR_PEER_USER)) { |
| LOG_DEBUG("Calling Disconnect_Ind_Cb(), CID: 0x%04x No Conf Needed", |
| p_ccb->local_cid); |
| l2cu_release_ccb(p_ccb); |
| (*disconnect_ind)(local_cid, false); |
| } |
| p_ccb->flags |= CCB_FLAG_NO_RETRY; |
| break; |
| |
| case L2CEVT_L2CAP_CONNECT_RSP: /* Got peer connect confirm */ |
| p_ccb->remote_cid = p_ci->remote_cid; |
| if (p_ccb->p_lcb->transport == BT_TRANSPORT_LE) { |
| /* Connection is completed */ |
| alarm_cancel(p_ccb->l2c_ccb_timer); |
| p_ccb->chnl_state = CST_OPEN; |
| l2c_csm_indicate_connection_open(p_ccb); |
| p_ccb->local_conn_cfg = p_ccb->p_rcb->coc_cfg; |
| p_ccb->remote_credit_count = p_ccb->p_rcb->coc_cfg.credits; |
| l2c_csm_execute(p_ccb, L2CEVT_L2CA_CONNECT_RSP, NULL); |
| } else { |
| p_ccb->chnl_state = CST_CONFIG; |
| alarm_set_on_mloop(p_ccb->l2c_ccb_timer, L2CAP_CHNL_CFG_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb); |
| } |
| LOG_DEBUG("Calling Connect_Cfm_Cb(), CID: 0x%04x, Success", |
| p_ccb->local_cid); |
| |
| l2c_csm_send_config_req(p_ccb); |
| break; |
| |
| case L2CEVT_L2CAP_CONNECT_RSP_PND: /* Got peer connect pending */ |
| p_ccb->remote_cid = p_ci->remote_cid; |
| alarm_set_on_mloop(p_ccb->l2c_ccb_timer, |
| L2CAP_CHNL_CONNECT_EXT_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb); |
| break; |
| |
| case L2CEVT_L2CAP_CREDIT_BASED_CONNECT_RSP: |
| alarm_cancel(p_ccb->l2c_ccb_timer); |
| p_ccb->chnl_state = CST_OPEN; |
| LOG_DEBUG( |
| "Calling credit_based_connect_cfm()," |
| "cid %d, result 0x%04x", |
| p_ccb->local_cid, L2CAP_CONN_OK); |
| |
| (*credit_based_connect_cfm)(p_lcb->remote_bd_addr, p_ccb->local_cid, |
| p_ci->peer_mtu, L2CAP_CONN_OK); |
| break; |
| |
| case L2CEVT_L2CAP_CREDIT_BASED_CONNECT_RSP_NEG: |
| LOG_DEBUG( |
| "Calling pL2CA_Error_Cb()," |
| "cid %d, result 0x%04x", |
| local_cid, p_ci->l2cap_result); |
| (*p_ccb->p_rcb->api.pL2CA_Error_Cb)(local_cid, p_ci->l2cap_result); |
| |
| l2cu_release_ccb(p_ccb); |
| break; |
| |
| case L2CEVT_L2CAP_CONNECT_RSP_NEG: /* Peer rejected connection */ |
| LOG(WARNING) << __func__ << ": L2CAP connection rejected, lcid=" |
| << loghex(p_ccb->local_cid) |
| << ", reason=" << loghex(p_ci->l2cap_result); |
| l2cu_release_ccb(p_ccb); |
| (*p_ccb->p_rcb->api.pL2CA_Error_Cb)(local_cid, L2CAP_CONN_OTHER_ERROR); |
| break; |
| |
| case L2CEVT_TIMEOUT: |
| LOG(WARNING) << __func__ << ": L2CAP connection timeout"; |
| |
| if (p_ccb->ecoc) { |
| for (int i = 0; i < p_lcb->pending_ecoc_conn_cnt; i++) { |
| uint16_t cid = p_lcb->pending_ecoc_connection_cids[i]; |
| tL2C_CCB* temp_p_ccb = l2cu_find_ccb_by_cid(p_lcb, cid); |
| LOG(WARNING) << __func__ << ": lcid= " << loghex(cid); |
| (*p_ccb->p_rcb->api.pL2CA_Error_Cb)(p_ccb->local_cid, |
| L2CAP_CONN_TIMEOUT); |
| l2cu_release_ccb(temp_p_ccb); |
| } |
| p_lcb->pending_ecoc_conn_cnt = 0; |
| memset(p_lcb->pending_ecoc_connection_cids, 0, |
| L2CAP_CREDIT_BASED_MAX_CIDS); |
| |
| } else { |
| LOG(WARNING) << __func__ << ": lcid= " << loghex(p_ccb->local_cid); |
| l2cu_release_ccb(p_ccb); |
| (*p_ccb->p_rcb->api.pL2CA_Error_Cb)(local_cid, L2CAP_CONN_OTHER_ERROR); |
| } |
| break; |
| |
| case L2CEVT_L2CA_DISCONNECT_REQ: /* Upper wants to disconnect */ |
| /* If we know peer CID from connect pending, we can send disconnect */ |
| if (p_ccb->remote_cid != 0) { |
| l2cu_send_peer_disc_req(p_ccb); |
| p_ccb->chnl_state = CST_W4_L2CAP_DISCONNECT_RSP; |
| alarm_set_on_mloop(p_ccb->l2c_ccb_timer, |
| L2CAP_CHNL_DISCONNECT_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb); |
| } else { |
| tL2CA_DISCONNECT_CFM_CB* disconnect_cfm = |
| p_ccb->p_rcb->api.pL2CA_DisconnectCfm_Cb; |
| l2cu_release_ccb(p_ccb); |
| if (disconnect_cfm != nullptr) { |
| (*disconnect_cfm)(local_cid, L2CAP_CONN_NO_LINK); |
| } |
| } |
| break; |
| |
| case L2CEVT_L2CA_DATA_WRITE: /* Upper layer data to send */ |
| case L2CEVT_L2CAP_DATA: /* Peer data packet rcvd */ |
| osi_free(p_data); |
| break; |
| |
| case L2CEVT_L2CAP_INFO_RSP: |
| /* Need to have at least one compatible channel to continue */ |
| if (!l2c_fcr_chk_chan_modes(p_ccb)) { |
| l2cu_release_ccb(p_ccb); |
| (*p_ccb->p_rcb->api.pL2CA_Error_Cb)(local_cid, L2CAP_CONN_OTHER_ERROR); |
| } else { |
| /* We have feature info, so now send peer connect request */ |
| alarm_set_on_mloop(p_ccb->l2c_ccb_timer, L2CAP_CHNL_CONNECT_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb); |
| l2cu_send_peer_connect_req(p_ccb); /* Start Connection */ |
| } |
| break; |
| |
| default: |
| LOG_ERROR("Handling unexpected event:%s", l2c_csm_get_event_name(event)); |
| } |
| LOG_DEBUG("Exit chnl_state=%s [%d], event=%s [%d]", |
| channel_state_text(p_ccb->chnl_state).c_str(), p_ccb->chnl_state, |
| l2c_csm_get_event_name(event), event); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function l2c_csm_w4_l2ca_connect_rsp |
| * |
| * Description This function handles events when the channel is in |
| * CST_W4_L2CA_CONNECT_RSP state. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| static void l2c_csm_w4_l2ca_connect_rsp(tL2C_CCB* p_ccb, tL2CEVT event, |
| void* p_data) { |
| tL2C_CONN_INFO* p_ci; |
| tL2CA_DISCONNECT_IND_CB* disconnect_ind = |
| p_ccb->p_rcb->api.pL2CA_DisconnectInd_Cb; |
| uint16_t local_cid = p_ccb->local_cid; |
| |
| LOG_DEBUG("LCID: 0x%04x st: W4_L2CA_CON_RSP evt: %s", p_ccb->local_cid, |
| l2c_csm_get_event_name(event)); |
| |
| switch (event) { |
| case L2CEVT_LP_DISCONNECT_IND: /* Link was disconnected */ |
| LOG_DEBUG("Calling Disconnect_Ind_Cb(), CID: 0x%04x No Conf Needed", |
| p_ccb->local_cid); |
| l2cu_release_ccb(p_ccb); |
| (*disconnect_ind)(local_cid, false); |
| break; |
| |
| case L2CEVT_L2CA_CREDIT_BASED_CONNECT_RSP: |
| p_ci = (tL2C_CONN_INFO*)p_data; |
| if (p_ccb->p_lcb && p_ccb->p_lcb->transport != BT_TRANSPORT_LE) { |
| LOG_WARN("LE link doesn't exist"); |
| return; |
| } |
| l2cu_send_peer_credit_based_conn_res(p_ccb, p_ci->lcids, |
| p_ci->l2cap_result); |
| alarm_cancel(p_ccb->l2c_ccb_timer); |
| |
| for (int i = 0; i < p_ccb->p_lcb->pending_ecoc_conn_cnt; i++) { |
| uint16_t cid = p_ccb->p_lcb->pending_ecoc_connection_cids[i]; |
| tL2C_CCB* temp_p_ccb = l2cu_find_ccb_by_cid(p_ccb->p_lcb, cid); |
| auto it = std::find(p_ci->lcids.begin(), p_ci->lcids.end(), cid); |
| if (it != p_ci->lcids.end()) { |
| temp_p_ccb->chnl_state = CST_OPEN; |
| } else { |
| l2cu_release_ccb(temp_p_ccb); |
| } |
| } |
| p_ccb->p_lcb->pending_ecoc_conn_cnt = 0; |
| memset(p_ccb->p_lcb->pending_ecoc_connection_cids, 0, |
| L2CAP_CREDIT_BASED_MAX_CIDS); |
| |
| break; |
| case L2CEVT_L2CA_CONNECT_RSP: |
| p_ci = (tL2C_CONN_INFO*)p_data; |
| if (p_ccb->p_lcb->transport == BT_TRANSPORT_LE) { |
| /* Result should be OK or Reject */ |
| if ((!p_ci) || (p_ci->l2cap_result == L2CAP_CONN_OK)) { |
| l2cble_credit_based_conn_res(p_ccb, L2CAP_CONN_OK); |
| p_ccb->chnl_state = CST_OPEN; |
| alarm_cancel(p_ccb->l2c_ccb_timer); |
| } else { |
| l2cble_credit_based_conn_res(p_ccb, p_ci->l2cap_result); |
| l2cu_release_ccb(p_ccb); |
| } |
| } else { |
| /* Result should be OK or PENDING */ |
| if ((!p_ci) || (p_ci->l2cap_result == L2CAP_CONN_OK)) { |
| LOG_DEBUG("Sending connection ok for BR_EDR"); |
| l2cu_send_peer_connect_rsp(p_ccb, L2CAP_CONN_OK, 0); |
| p_ccb->chnl_state = CST_CONFIG; |
| alarm_set_on_mloop(p_ccb->l2c_ccb_timer, L2CAP_CHNL_CFG_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb); |
| } else { |
| /* If pending, stay in same state and start extended timer */ |
| LOG_DEBUG("Sending connection result %d and status %d", |
| p_ci->l2cap_result, p_ci->l2cap_status); |
| l2cu_send_peer_connect_rsp(p_ccb, p_ci->l2cap_result, |
| p_ci->l2cap_status); |
| alarm_set_on_mloop(p_ccb->l2c_ccb_timer, |
| L2CAP_CHNL_CONNECT_EXT_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb); |
| } |
| } |
| break; |
| |
| case L2CEVT_L2CA_CREDIT_BASED_CONNECT_RSP_NEG: |
| p_ci = (tL2C_CONN_INFO*)p_data; |
| if (p_ccb->p_lcb && p_ccb->p_lcb->transport == BT_TRANSPORT_LE) { |
| l2cu_send_peer_credit_based_conn_res(p_ccb, p_ci->lcids, |
| p_ci->l2cap_result); |
| } |
| alarm_cancel(p_ccb->l2c_ccb_timer); |
| for (int i = 0; i < p_ccb->p_lcb->pending_ecoc_conn_cnt; i++) { |
| uint16_t cid = p_ccb->p_lcb->pending_ecoc_connection_cids[i]; |
| tL2C_CCB* temp_p_ccb = l2cu_find_ccb_by_cid(p_ccb->p_lcb, cid); |
| l2cu_release_ccb(temp_p_ccb); |
| } |
| |
| p_ccb->p_lcb->pending_ecoc_conn_cnt = 0; |
| memset(p_ccb->p_lcb->pending_ecoc_connection_cids, 0, |
| L2CAP_CREDIT_BASED_MAX_CIDS); |
| |
| break; |
| case L2CEVT_L2CA_CONNECT_RSP_NEG: |
| p_ci = (tL2C_CONN_INFO*)p_data; |
| if (p_ccb->p_lcb->transport == BT_TRANSPORT_LE) |
| l2cble_credit_based_conn_res(p_ccb, p_ci->l2cap_result); |
| else |
| l2cu_send_peer_connect_rsp(p_ccb, p_ci->l2cap_result, |
| p_ci->l2cap_status); |
| l2cu_release_ccb(p_ccb); |
| break; |
| |
| case L2CEVT_TIMEOUT: |
| l2cu_send_peer_connect_rsp(p_ccb, L2CAP_CONN_NO_PSM, 0); |
| LOG_DEBUG("Calling Disconnect_Ind_Cb(), CID: 0x%04x No Conf Needed", |
| p_ccb->local_cid); |
| l2cu_release_ccb(p_ccb); |
| (*disconnect_ind)(local_cid, false); |
| break; |
| |
| case L2CEVT_L2CA_DATA_WRITE: /* Upper layer data to send */ |
| case L2CEVT_L2CAP_DATA: /* Peer data packet rcvd */ |
| osi_free(p_data); |
| break; |
| |
| case L2CEVT_L2CA_DISCONNECT_REQ: /* Upper wants to disconnect */ |
| l2cu_send_peer_disc_req(p_ccb); |
| p_ccb->chnl_state = CST_W4_L2CAP_DISCONNECT_RSP; |
| alarm_set_on_mloop(p_ccb->l2c_ccb_timer, L2CAP_CHNL_DISCONNECT_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb); |
| break; |
| |
| case L2CEVT_L2CAP_INFO_RSP: |
| /* We have feature info, so now give the upper layer connect IND */ |
| alarm_set_on_mloop(p_ccb->l2c_ccb_timer, L2CAP_CHNL_CONNECT_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb); |
| LOG_DEBUG("Calling Connect_Ind_Cb(), CID: 0x%04x", p_ccb->local_cid); |
| |
| l2c_csm_send_connect_rsp(p_ccb); |
| l2c_csm_send_config_req(p_ccb); |
| break; |
| default: |
| LOG_ERROR("Handling unexpected event:%s", l2c_csm_get_event_name(event)); |
| } |
| LOG_DEBUG("Exit chnl_state=%s [%d], event=%s [%d]", |
| channel_state_text(p_ccb->chnl_state).c_str(), p_ccb->chnl_state, |
| l2c_csm_get_event_name(event), event); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function l2c_csm_config |
| * |
| * Description This function handles events when the channel is in |
| * CONFIG state. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| static void l2c_csm_config(tL2C_CCB* p_ccb, tL2CEVT event, void* p_data) { |
| tL2CAP_CFG_INFO* p_cfg = (tL2CAP_CFG_INFO*)p_data; |
| tL2CA_DISCONNECT_IND_CB* disconnect_ind = |
| p_ccb->p_rcb->api.pL2CA_DisconnectInd_Cb; |
| uint16_t local_cid = p_ccb->local_cid; |
| uint8_t cfg_result; |
| tL2C_LCB* p_lcb = p_ccb->p_lcb; |
| tL2C_CCB* temp_p_ccb; |
| tL2CAP_LE_CFG_INFO* p_le_cfg = (tL2CAP_LE_CFG_INFO*)p_data; |
| |
| LOG_DEBUG("LCID: 0x%04x st: CONFIG evt: %s", p_ccb->local_cid, |
| l2c_csm_get_event_name(event)); |
| |
| switch (event) { |
| case L2CEVT_LP_DISCONNECT_IND: /* Link was disconnected */ |
| LOG_DEBUG("Calling Disconnect_Ind_Cb(), CID: 0x%04x No Conf Needed", |
| p_ccb->local_cid); |
| l2cu_release_ccb(p_ccb); |
| (*disconnect_ind)(local_cid, false); |
| break; |
| |
| case L2CEVT_L2CAP_CREDIT_BASED_RECONFIG_REQ: |
| /* For ecoc reconfig is handled below in l2c_ble. In case of success |
| * let us notify upper layer about the reconfig |
| */ |
| LOG_DEBUG("Calling LeReconfigCompleted_Cb(), CID: 0x%04x", |
| p_ccb->local_cid); |
| |
| (*p_ccb->p_rcb->api.pL2CA_CreditBasedReconfigCompleted_Cb)( |
| p_lcb->remote_bd_addr, p_ccb->local_cid, false, p_le_cfg); |
| break; |
| case L2CEVT_L2CAP_CONFIG_REQ: /* Peer config request */ |
| cfg_result = l2cu_process_peer_cfg_req(p_ccb, p_cfg); |
| if (cfg_result == L2CAP_PEER_CFG_OK) { |
| LOG_DEBUG("Calling Config_Req_Cb(), CID: 0x%04x, C-bit %d", |
| p_ccb->local_cid, (p_cfg->flags & L2CAP_CFG_FLAGS_MASK_CONT)); |
| l2c_csm_send_config_rsp_ok(p_ccb); |
| if (p_ccb->config_done & OB_CFG_DONE) { |
| if (p_ccb->remote_config_rsp_result == L2CAP_CFG_OK) { |
| l2c_csm_indicate_connection_open(p_ccb); |
| } else { |
| if (p_ccb->connection_initiator == L2CAP_INITIATOR_LOCAL) { |
| (*p_ccb->p_rcb->api.pL2CA_Error_Cb)(p_ccb->local_cid, |
| L2CAP_CFG_FAILED_NO_REASON); |
| } |
| } |
| } |
| } else if (cfg_result == L2CAP_PEER_CFG_DISCONNECT) { |
| /* Disconnect if channels are incompatible */ |
| LOG_DEBUG("incompatible configurations disconnect"); |
| l2cu_disconnect_chnl(p_ccb); |
| } else /* Return error to peer so it can renegotiate if possible */ |
| { |
| LOG_DEBUG("incompatible configurations trying reconfig"); |
| l2cu_send_peer_config_rsp(p_ccb, p_cfg); |
| } |
| break; |
| |
| case L2CEVT_L2CAP_CREDIT_BASED_RECONFIG_RSP: |
| p_ccb->config_done |= OB_CFG_DONE; |
| p_ccb->config_done |= RECONFIG_FLAG; |
| p_ccb->chnl_state = CST_OPEN; |
| alarm_cancel(p_ccb->l2c_ccb_timer); |
| |
| LOG_DEBUG("Calling Config_Rsp_Cb(), CID: 0x%04x", p_ccb->local_cid); |
| |
| p_ccb->p_rcb->api.pL2CA_CreditBasedReconfigCompleted_Cb( |
| p_lcb->remote_bd_addr, p_ccb->local_cid, true, p_le_cfg); |
| |
| break; |
| case L2CEVT_L2CAP_CONFIG_RSP: /* Peer config response */ |
| l2cu_process_peer_cfg_rsp(p_ccb, p_cfg); |
| |
| /* TBD: When config options grow beyong minimum MTU (48 bytes) |
| * logic needs to be added to handle responses with |
| * continuation bit set in flags field. |
| * 1. Send additional config request out until C-bit is cleared in |
| * response |
| */ |
| p_ccb->config_done |= OB_CFG_DONE; |
| |
| if (p_ccb->config_done & IB_CFG_DONE) { |
| /* Verify two sides are in compatible modes before continuing */ |
| if (p_ccb->our_cfg.fcr.mode != p_ccb->peer_cfg.fcr.mode) { |
| l2cu_send_peer_disc_req(p_ccb); |
| LOG_WARN( |
| "Calling Disconnect_Ind_Cb(Incompatible CFG), CID: " |
| "0x%04x No Conf Needed", |
| p_ccb->local_cid); |
| l2cu_release_ccb(p_ccb); |
| (*disconnect_ind)(local_cid, false); |
| break; |
| } |
| |
| p_ccb->config_done |= RECONFIG_FLAG; |
| p_ccb->chnl_state = CST_OPEN; |
| l2c_link_adjust_chnl_allocation(); |
| alarm_cancel(p_ccb->l2c_ccb_timer); |
| |
| /* If using eRTM and waiting for an ACK, restart the ACK timer */ |
| if (p_ccb->fcrb.wait_ack) l2c_fcr_start_timer(p_ccb); |
| |
| /* |
| ** check p_ccb->our_cfg.fcr.mon_tout and |
| *p_ccb->our_cfg.fcr.rtrans_tout |
| ** we may set them to zero when sending config request during |
| *renegotiation |
| */ |
| if ((p_ccb->our_cfg.fcr.mode == L2CAP_FCR_ERTM_MODE) && |
| ((p_ccb->our_cfg.fcr.mon_tout == 0) || |
| (p_ccb->our_cfg.fcr.rtrans_tout))) { |
| l2c_fcr_adj_monitor_retran_timeout(p_ccb); |
| } |
| |
| /* See if we can forward anything on the hold queue */ |
| if (!fixed_queue_is_empty(p_ccb->xmit_hold_q)) { |
| l2c_link_check_send_pkts(p_ccb->p_lcb, 0, NULL); |
| } |
| } |
| |
| LOG_DEBUG("Calling Config_Rsp_Cb(), CID: 0x%04x", p_ccb->local_cid); |
| p_ccb->remote_config_rsp_result = p_cfg->result; |
| if (p_ccb->config_done & IB_CFG_DONE) { |
| l2c_csm_indicate_connection_open(p_ccb); |
| } |
| break; |
| |
| case L2CEVT_L2CAP_CONFIG_RSP_NEG: /* Peer config error rsp */ |
| /* Disable the Timer */ |
| alarm_cancel(p_ccb->l2c_ccb_timer); |
| |
| /* If failure was channel mode try to renegotiate */ |
| if (!l2c_fcr_renegotiate_chan(p_ccb, p_cfg)) { |
| LOG_DEBUG("Calling Config_Rsp_Cb(), CID: 0x%04x, Failure: %d", |
| p_ccb->local_cid, p_cfg->result); |
| if (p_ccb->connection_initiator == L2CAP_INITIATOR_LOCAL) { |
| (*p_ccb->p_rcb->api.pL2CA_Error_Cb)(p_ccb->local_cid, |
| L2CAP_CFG_FAILED_NO_REASON); |
| } |
| } |
| break; |
| |
| case L2CEVT_L2CAP_DISCONNECT_REQ: /* Peer disconnected request */ |
| alarm_set_on_mloop(p_ccb->l2c_ccb_timer, L2CAP_CHNL_DISCONNECT_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb); |
| p_ccb->chnl_state = CST_W4_L2CA_DISCONNECT_RSP; |
| LOG_DEBUG("Calling Disconnect_Ind_Cb(), CID: 0x%04x Conf Needed", |
| p_ccb->local_cid); |
| (*p_ccb->p_rcb->api.pL2CA_DisconnectInd_Cb)(p_ccb->local_cid, true); |
| l2c_csm_send_disconnect_rsp(p_ccb); |
| break; |
| |
| case L2CEVT_L2CA_CREDIT_BASED_RECONFIG_REQ: |
| l2cu_send_credit_based_reconfig_req(p_ccb, (tL2CAP_LE_CFG_INFO*)p_data); |
| alarm_set_on_mloop(p_ccb->l2c_ccb_timer, L2CAP_CHNL_CFG_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb); |
| break; |
| case L2CEVT_L2CA_CONFIG_REQ: /* Upper layer config req */ |
| l2cu_process_our_cfg_req(p_ccb, p_cfg); |
| l2cu_send_peer_config_req(p_ccb, p_cfg); |
| alarm_set_on_mloop(p_ccb->l2c_ccb_timer, L2CAP_CHNL_CFG_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb); |
| break; |
| |
| case L2CEVT_L2CA_CONFIG_RSP: /* Upper layer config rsp */ |
| l2cu_process_our_cfg_rsp(p_ccb, p_cfg); |
| |
| p_ccb->config_done |= IB_CFG_DONE; |
| |
| if (p_ccb->config_done & OB_CFG_DONE) { |
| /* Verify two sides are in compatible modes before continuing */ |
| if (p_ccb->our_cfg.fcr.mode != p_ccb->peer_cfg.fcr.mode) { |
| l2cu_send_peer_disc_req(p_ccb); |
| LOG_WARN( |
| "Calling Disconnect_Ind_Cb(Incompatible CFG), CID: " |
| "0x%04x No Conf Needed", |
| p_ccb->local_cid); |
| l2cu_release_ccb(p_ccb); |
| (*disconnect_ind)(local_cid, false); |
| break; |
| } |
| |
| p_ccb->config_done |= RECONFIG_FLAG; |
| p_ccb->chnl_state = CST_OPEN; |
| l2c_link_adjust_chnl_allocation(); |
| alarm_cancel(p_ccb->l2c_ccb_timer); |
| } |
| |
| l2cu_send_peer_config_rsp(p_ccb, p_cfg); |
| |
| /* If using eRTM and waiting for an ACK, restart the ACK timer */ |
| if (p_ccb->fcrb.wait_ack) l2c_fcr_start_timer(p_ccb); |
| |
| /* See if we can forward anything on the hold queue */ |
| if ((p_ccb->chnl_state == CST_OPEN) && |
| (!fixed_queue_is_empty(p_ccb->xmit_hold_q))) { |
| l2c_link_check_send_pkts(p_ccb->p_lcb, 0, NULL); |
| } |
| break; |
| |
| case L2CEVT_L2CA_DISCONNECT_REQ: /* Upper wants to disconnect */ |
| l2cu_send_peer_disc_req(p_ccb); |
| p_ccb->chnl_state = CST_W4_L2CAP_DISCONNECT_RSP; |
| alarm_set_on_mloop(p_ccb->l2c_ccb_timer, L2CAP_CHNL_DISCONNECT_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb); |
| break; |
| |
| case L2CEVT_L2CAP_DATA: /* Peer data packet rcvd */ |
| LOG_DEBUG("Calling DataInd_Cb(), CID: 0x%04x", p_ccb->local_cid); |
| if (p_ccb->local_cid >= L2CAP_FIRST_FIXED_CHNL && |
| p_ccb->local_cid <= L2CAP_LAST_FIXED_CHNL) { |
| if (p_ccb->local_cid < L2CAP_BASE_APPL_CID) { |
| if (l2cb.fixed_reg[p_ccb->local_cid - L2CAP_FIRST_FIXED_CHNL] |
| .pL2CA_FixedData_Cb != nullptr) { |
| p_ccb->metrics.rx(static_cast<BT_HDR*>(p_data)->len); |
| (*l2cb.fixed_reg[p_ccb->local_cid - L2CAP_FIRST_FIXED_CHNL] |
| .pL2CA_FixedData_Cb)(p_ccb->local_cid, |
| p_ccb->p_lcb->remote_bd_addr, |
| (BT_HDR*)p_data); |
| } else { |
| if (p_data != nullptr) osi_free_and_reset(&p_data); |
| } |
| break; |
| } |
| } |
| if (p_data) p_ccb->metrics.rx(static_cast<BT_HDR*>(p_data)->len); |
| (*p_ccb->p_rcb->api.pL2CA_DataInd_Cb)(p_ccb->local_cid, (BT_HDR*)p_data); |
| break; |
| |
| case L2CEVT_L2CA_DATA_WRITE: /* Upper layer data to send */ |
| if (p_ccb->config_done & OB_CFG_DONE) |
| l2c_enqueue_peer_data(p_ccb, (BT_HDR*)p_data); |
| else |
| osi_free(p_data); |
| break; |
| |
| case L2CEVT_TIMEOUT: |
| if (p_ccb->ecoc) { |
| for (temp_p_ccb = p_lcb->ccb_queue.p_first_ccb; temp_p_ccb; |
| temp_p_ccb = temp_p_ccb->p_next_ccb) { |
| if ((temp_p_ccb->in_use) && (temp_p_ccb->reconfig_started)) { |
| (*temp_p_ccb->p_rcb->api.pL2CA_DisconnectInd_Cb)( |
| temp_p_ccb->local_cid, false); |
| l2cu_release_ccb(temp_p_ccb); |
| } |
| } |
| |
| acl_disconnect_from_handle(p_ccb->p_lcb->Handle(), |
| HCI_ERR_CONN_CAUSE_LOCAL_HOST); |
| return; |
| } |
| |
| l2cu_send_peer_disc_req(p_ccb); |
| LOG_DEBUG("Calling Disconnect_Ind_Cb(), CID: 0x%04x No Conf Needed", |
| p_ccb->local_cid); |
| l2cu_release_ccb(p_ccb); |
| (*disconnect_ind)(local_cid, false); |
| break; |
| default: |
| LOG_ERROR("Handling unexpected event:%s", l2c_csm_get_event_name(event)); |
| } |
| LOG_DEBUG("Exit chnl_state=%s [%d], event=%s [%d]", |
| channel_state_text(p_ccb->chnl_state).c_str(), p_ccb->chnl_state, |
| l2c_csm_get_event_name(event), event); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function l2c_csm_open |
| * |
| * Description This function handles events when the channel is in |
| * OPEN state. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| static void l2c_csm_open(tL2C_CCB* p_ccb, tL2CEVT event, void* p_data) { |
| uint16_t local_cid = p_ccb->local_cid; |
| tL2CAP_CFG_INFO* p_cfg; |
| tL2C_CHNL_STATE tempstate; |
| uint8_t tempcfgdone; |
| uint8_t cfg_result; |
| uint16_t credit = 0; |
| tL2CAP_LE_CFG_INFO* p_le_cfg = (tL2CAP_LE_CFG_INFO*)p_data; |
| |
| LOG_DEBUG("LCID: 0x%04x st: OPEN evt: %s", p_ccb->local_cid, |
| l2c_csm_get_event_name(event)); |
| |
| switch (event) { |
| case L2CEVT_LP_DISCONNECT_IND: /* Link was disconnected */ |
| LOG_DEBUG("Calling Disconnect_Ind_Cb(), CID: 0x%04x No Conf Needed", |
| p_ccb->local_cid); |
| l2cu_release_ccb(p_ccb); |
| if (p_ccb->p_rcb) |
| (*p_ccb->p_rcb->api.pL2CA_DisconnectInd_Cb)(local_cid, false); |
| break; |
| |
| case L2CEVT_L2CAP_CREDIT_BASED_RECONFIG_REQ: |
| /* For ecoc reconfig is handled below in l2c_ble. In case of success |
| * let us notify upper layer about the reconfig |
| */ |
| LOG_DEBUG("Calling LeReconfigCompleted_Cb(), CID: 0x%04x", |
| p_ccb->local_cid); |
| |
| (*p_ccb->p_rcb->api.pL2CA_CreditBasedReconfigCompleted_Cb)( |
| p_ccb->p_lcb->remote_bd_addr, p_ccb->local_cid, false, p_le_cfg); |
| break; |
| |
| case L2CEVT_L2CAP_CONFIG_REQ: /* Peer config request */ |
| p_cfg = (tL2CAP_CFG_INFO*)p_data; |
| |
| tempstate = p_ccb->chnl_state; |
| tempcfgdone = p_ccb->config_done; |
| p_ccb->chnl_state = CST_CONFIG; |
| // clear cached configuration in case reconfig takes place later |
| p_ccb->peer_cfg.mtu_present = false; |
| p_ccb->peer_cfg.flush_to_present = false; |
| p_ccb->peer_cfg.qos_present = false; |
| p_ccb->config_done &= ~IB_CFG_DONE; |
| |
| alarm_set_on_mloop(p_ccb->l2c_ccb_timer, L2CAP_CHNL_CFG_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb); |
| |
| cfg_result = l2cu_process_peer_cfg_req(p_ccb, p_cfg); |
| if (cfg_result == L2CAP_PEER_CFG_OK) { |
| (*p_ccb->p_rcb->api.pL2CA_ConfigInd_Cb)(p_ccb->local_cid, p_cfg); |
| l2c_csm_send_config_rsp_ok(p_ccb); |
| } |
| |
| /* Error in config parameters: reset state and config flag */ |
| else if (cfg_result == L2CAP_PEER_CFG_UNACCEPTABLE) { |
| alarm_cancel(p_ccb->l2c_ccb_timer); |
| p_ccb->chnl_state = tempstate; |
| p_ccb->config_done = tempcfgdone; |
| l2cu_send_peer_config_rsp(p_ccb, p_cfg); |
| } else /* L2CAP_PEER_CFG_DISCONNECT */ |
| { |
| /* Disconnect if channels are incompatible |
| * Note this should not occur if reconfigure |
| * since this should have never passed original config. |
| */ |
| l2cu_disconnect_chnl(p_ccb); |
| } |
| break; |
| |
| case L2CEVT_L2CAP_DISCONNECT_REQ: /* Peer disconnected request */ |
| if (p_ccb->p_lcb->transport != BT_TRANSPORT_LE) { |
| if (!BTM_SetLinkPolicyActiveMode(p_ccb->p_lcb->remote_bd_addr)) { |
| LOG_WARN("Unable to set link policy active"); |
| } |
| } |
| |
| p_ccb->chnl_state = CST_W4_L2CA_DISCONNECT_RSP; |
| alarm_set_on_mloop(p_ccb->l2c_ccb_timer, L2CAP_CHNL_DISCONNECT_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb); |
| LOG_DEBUG("Calling Disconnect_Ind_Cb(), CID: 0x%04x Conf Needed", |
| p_ccb->local_cid); |
| (*p_ccb->p_rcb->api.pL2CA_DisconnectInd_Cb)(p_ccb->local_cid, true); |
| l2c_csm_send_disconnect_rsp(p_ccb); |
| break; |
| |
| case L2CEVT_L2CAP_DATA: /* Peer data packet rcvd */ |
| if ((p_ccb->p_rcb) && (p_ccb->p_rcb->api.pL2CA_DataInd_Cb)) { |
| p_ccb->metrics.rx(static_cast<BT_HDR*>(p_data)->len); |
| (*p_ccb->p_rcb->api.pL2CA_DataInd_Cb)(p_ccb->local_cid, |
| (BT_HDR*)p_data); |
| } |
| break; |
| |
| case L2CEVT_L2CA_DISCONNECT_REQ: /* Upper wants to disconnect */ |
| if (p_ccb->p_lcb->transport != BT_TRANSPORT_LE) { |
| /* Make sure we are not in sniff mode */ |
| if (!BTM_SetLinkPolicyActiveMode(p_ccb->p_lcb->remote_bd_addr)) { |
| LOG_WARN("Unable to set link policy active"); |
| } |
| } |
| |
| if (p_ccb->p_lcb->transport == BT_TRANSPORT_LE) |
| l2cble_send_peer_disc_req(p_ccb); |
| else |
| l2cu_send_peer_disc_req(p_ccb); |
| |
| p_ccb->chnl_state = CST_W4_L2CAP_DISCONNECT_RSP; |
| alarm_set_on_mloop(p_ccb->l2c_ccb_timer, L2CAP_CHNL_DISCONNECT_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb); |
| break; |
| |
| case L2CEVT_L2CA_DATA_WRITE: /* Upper layer data to send */ |
| l2c_enqueue_peer_data(p_ccb, (BT_HDR*)p_data); |
| l2c_link_check_send_pkts(p_ccb->p_lcb, 0, NULL); |
| break; |
| |
| case L2CEVT_L2CA_CREDIT_BASED_RECONFIG_REQ: |
| p_ccb->chnl_state = CST_CONFIG; |
| p_ccb->config_done &= ~OB_CFG_DONE; |
| |
| l2cu_send_credit_based_reconfig_req(p_ccb, (tL2CAP_LE_CFG_INFO*)p_data); |
| |
| alarm_set_on_mloop(p_ccb->l2c_ccb_timer, L2CAP_CHNL_CFG_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb); |
| break; |
| |
| case L2CEVT_L2CA_CONFIG_REQ: /* Upper layer config req */ |
| LOG_ERROR( |
| "Dropping L2CAP re-config request because there is no usage and " |
| "should not be invoked"); |
| break; |
| |
| case L2CEVT_TIMEOUT: |
| /* Process the monitor/retransmission time-outs in flow control/retrans |
| * mode */ |
| if (p_ccb->peer_cfg.fcr.mode == L2CAP_FCR_ERTM_MODE) |
| l2c_fcr_proc_tout(p_ccb); |
| break; |
| |
| case L2CEVT_ACK_TIMEOUT: |
| l2c_fcr_proc_ack_tout(p_ccb); |
| break; |
| |
| case L2CEVT_L2CA_SEND_FLOW_CONTROL_CREDIT: |
| LOG_DEBUG("Sending credit"); |
| credit = *(uint16_t*)p_data; |
| l2cble_send_flow_control_credit(p_ccb, credit); |
| break; |
| |
| case L2CEVT_L2CAP_RECV_FLOW_CONTROL_CREDIT: |
| credit = *(uint16_t*)p_data; |
| LOG_DEBUG("Credits received %d", credit); |
| if ((p_ccb->peer_conn_cfg.credits + credit) > L2CAP_LE_CREDIT_MAX) { |
| /* we have received credits more than max coc credits, |
| * so disconnecting the Le Coc Channel |
| */ |
| l2cble_send_peer_disc_req(p_ccb); |
| } else { |
| p_ccb->peer_conn_cfg.credits += credit; |
| l2c_link_check_send_pkts(p_ccb->p_lcb, 0, NULL); |
| } |
| break; |
| default: |
| LOG_ERROR("Handling unexpected event:%s", l2c_csm_get_event_name(event)); |
| } |
| LOG_DEBUG("Exit chnl_state=%s [%d], event=%s [%d]", |
| channel_state_text(p_ccb->chnl_state).c_str(), p_ccb->chnl_state, |
| l2c_csm_get_event_name(event), event); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function l2c_csm_w4_l2cap_disconnect_rsp |
| * |
| * Description This function handles events when the channel is in |
| * CST_W4_L2CAP_DISCONNECT_RSP state. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| static void l2c_csm_w4_l2cap_disconnect_rsp(tL2C_CCB* p_ccb, tL2CEVT event, |
| void* p_data) { |
| tL2CA_DISCONNECT_CFM_CB* disconnect_cfm = |
| p_ccb->p_rcb->api.pL2CA_DisconnectCfm_Cb; |
| uint16_t local_cid = p_ccb->local_cid; |
| |
| LOG_DEBUG("LCID: 0x%04x st: W4_L2CAP_DISC_RSP evt: %s", p_ccb->local_cid, |
| l2c_csm_get_event_name(event)); |
| |
| switch (event) { |
| case L2CEVT_L2CAP_DISCONNECT_RSP: /* Peer disconnect response */ |
| l2cu_release_ccb(p_ccb); |
| if (disconnect_cfm != nullptr) { |
| (*disconnect_cfm)(local_cid, L2CAP_DISC_OK); |
| } |
| break; |
| |
| case L2CEVT_L2CAP_DISCONNECT_REQ: /* Peer disconnect request */ |
| l2cu_send_peer_disc_rsp(p_ccb->p_lcb, p_ccb->remote_id, p_ccb->local_cid, |
| p_ccb->remote_cid); |
| l2cu_release_ccb(p_ccb); |
| if (disconnect_cfm != nullptr) { |
| (*disconnect_cfm)(local_cid, L2CAP_DISC_OK); |
| } |
| break; |
| |
| case L2CEVT_LP_DISCONNECT_IND: /* Link was disconnected */ |
| case L2CEVT_TIMEOUT: /* Timeout */ |
| l2cu_release_ccb(p_ccb); |
| if (disconnect_cfm != nullptr) { |
| (*disconnect_cfm)(local_cid, L2CAP_DISC_TIMEOUT); |
| } |
| |
| break; |
| |
| case L2CEVT_L2CAP_DATA: /* Peer data packet rcvd */ |
| case L2CEVT_L2CA_DATA_WRITE: /* Upper layer data to send */ |
| osi_free(p_data); |
| break; |
| default: |
| LOG_ERROR("Handling unexpected event:%s", l2c_csm_get_event_name(event)); |
| } |
| LOG_DEBUG("Exit chnl_state=%s [%d], event=%s [%d]", |
| channel_state_text(p_ccb->chnl_state).c_str(), p_ccb->chnl_state, |
| l2c_csm_get_event_name(event), event); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function l2c_csm_w4_l2ca_disconnect_rsp |
| * |
| * Description This function handles events when the channel is in |
| * CST_W4_L2CA_DISCONNECT_RSP state. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| static void l2c_csm_w4_l2ca_disconnect_rsp(tL2C_CCB* p_ccb, tL2CEVT event, |
| void* p_data) { |
| tL2CA_DISCONNECT_IND_CB* disconnect_ind = |
| p_ccb->p_rcb->api.pL2CA_DisconnectInd_Cb; |
| uint16_t local_cid = p_ccb->local_cid; |
| |
| LOG_DEBUG("LCID: 0x%04x st: W4_L2CA_DISC_RSP evt: %s", p_ccb->local_cid, |
| l2c_csm_get_event_name(event)); |
| |
| switch (event) { |
| case L2CEVT_LP_DISCONNECT_IND: /* Link was disconnected */ |
| LOG_DEBUG("Calling Disconnect_Ind_Cb(), CID: 0x%04x No Conf Needed", |
| p_ccb->local_cid); |
| l2cu_release_ccb(p_ccb); |
| (*disconnect_ind)(local_cid, false); |
| break; |
| |
| case L2CEVT_TIMEOUT: |
| l2cu_send_peer_disc_rsp(p_ccb->p_lcb, p_ccb->remote_id, p_ccb->local_cid, |
| p_ccb->remote_cid); |
| LOG_DEBUG("Calling Disconnect_Ind_Cb(), CID: 0x%04x No Conf Needed", |
| p_ccb->local_cid); |
| l2cu_release_ccb(p_ccb); |
| (*disconnect_ind)(local_cid, false); |
| break; |
| |
| case L2CEVT_L2CA_DISCONNECT_REQ: /* Upper disconnect request */ |
| case L2CEVT_L2CA_DISCONNECT_RSP: /* Upper disconnect response */ |
| l2cu_send_peer_disc_rsp(p_ccb->p_lcb, p_ccb->remote_id, p_ccb->local_cid, |
| p_ccb->remote_cid); |
| l2cu_release_ccb(p_ccb); |
| break; |
| |
| case L2CEVT_L2CAP_DATA: /* Peer data packet rcvd */ |
| case L2CEVT_L2CA_DATA_WRITE: /* Upper layer data to send */ |
| osi_free(p_data); |
| break; |
| default: |
| LOG_ERROR("Handling unexpected event:%s", l2c_csm_get_event_name(event)); |
| } |
| LOG_DEBUG("Exit chnl_state=%s [%d], event=%s [%d]", |
| channel_state_text(p_ccb->chnl_state).c_str(), p_ccb->chnl_state, |
| l2c_csm_get_event_name(event), event); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function l2c_csm_get_event_name |
| * |
| * Description This function returns the event name. |
| * |
| * NOTE conditionally compiled to save memory. |
| * |
| * Returns pointer to the name |
| * |
| ******************************************************************************/ |
| static const char* l2c_csm_get_event_name(tL2CEVT event) { |
| switch (event) { |
| case L2CEVT_LP_CONNECT_CFM: /* Lower layer connect confirm */ |
| return ("LOWER_LAYER_CONNECT_CFM"); |
| case L2CEVT_LP_CONNECT_CFM_NEG: /* Lower layer connect confirm (failed) */ |
| return ("LOWER_LAYER_CONNECT_CFM_NEG"); |
| case L2CEVT_LP_CONNECT_IND: /* Lower layer connect indication */ |
| return ("LOWER_LAYER_CONNECT_IND"); |
| case L2CEVT_LP_DISCONNECT_IND: /* Lower layer disconnect indication */ |
| return ("LOWER_LAYER_DISCONNECT_IND"); |
| |
| case L2CEVT_SEC_COMP: /* Security cleared successfully */ |
| return ("SECURITY_COMPLETE"); |
| case L2CEVT_SEC_COMP_NEG: /* Security procedure failed */ |
| return ("SECURITY_COMPLETE_NEG"); |
| |
| case L2CEVT_L2CAP_CONNECT_REQ: /* Peer connection request */ |
| return ("PEER_CONNECT_REQ"); |
| case L2CEVT_L2CAP_CONNECT_RSP: /* Peer connection response */ |
| return ("PEER_CONNECT_RSP"); |
| case L2CEVT_L2CAP_CONNECT_RSP_PND: /* Peer connection response pending */ |
| return ("PEER_CONNECT_RSP_PND"); |
| case L2CEVT_L2CAP_CONNECT_RSP_NEG: /* Peer connection response (failed) */ |
| return ("PEER_CONNECT_RSP_NEG"); |
| case L2CEVT_L2CAP_CONFIG_REQ: /* Peer configuration request */ |
| return ("PEER_CONFIG_REQ"); |
| case L2CEVT_L2CAP_CONFIG_RSP: /* Peer configuration response */ |
| return ("PEER_CONFIG_RSP"); |
| case L2CEVT_L2CAP_CONFIG_RSP_NEG: /* Peer configuration response (failed) */ |
| return ("PEER_CONFIG_RSP_NEG"); |
| case L2CEVT_L2CAP_DISCONNECT_REQ: /* Peer disconnect request */ |
| return ("PEER_DISCONNECT_REQ"); |
| case L2CEVT_L2CAP_DISCONNECT_RSP: /* Peer disconnect response */ |
| return ("PEER_DISCONNECT_RSP"); |
| case L2CEVT_L2CAP_DATA: /* Peer data */ |
| return ("PEER_DATA"); |
| |
| case L2CEVT_L2CA_CONNECT_REQ: /* Upper layer connect request */ |
| return ("UPPER_LAYER_CONNECT_REQ"); |
| case L2CEVT_L2CA_CONNECT_RSP: /* Upper layer connect response */ |
| return ("UPPER_LAYER_CONNECT_RSP"); |
| case L2CEVT_L2CA_CONNECT_RSP_NEG: /* Upper layer connect response (failed)*/ |
| return ("UPPER_LAYER_CONNECT_RSP_NEG"); |
| case L2CEVT_L2CA_CONFIG_REQ: /* Upper layer config request */ |
| return ("UPPER_LAYER_CONFIG_REQ"); |
| case L2CEVT_L2CA_CONFIG_RSP: /* Upper layer config response */ |
| return ("UPPER_LAYER_CONFIG_RSP"); |
| case L2CEVT_L2CA_DISCONNECT_REQ: /* Upper layer disconnect request */ |
| return ("UPPER_LAYER_DISCONNECT_REQ"); |
| case L2CEVT_L2CA_DISCONNECT_RSP: /* Upper layer disconnect response */ |
| return ("UPPER_LAYER_DISCONNECT_RSP"); |
| case L2CEVT_L2CA_DATA_READ: /* Upper layer data read */ |
| return ("UPPER_LAYER_DATA_READ"); |
| case L2CEVT_L2CA_DATA_WRITE: /* Upper layer data write */ |
| return ("UPPER_LAYER_DATA_WRITE"); |
| case L2CEVT_TIMEOUT: /* Timeout */ |
| return ("TIMEOUT"); |
| case L2CEVT_SEC_RE_SEND_CMD: |
| return ("SEC_RE_SEND_CMD"); |
| case L2CEVT_L2CAP_INFO_RSP: /* Peer information response */ |
| return ("L2CEVT_L2CAP_INFO_RSP"); |
| case L2CEVT_ACK_TIMEOUT: |
| return ("L2CEVT_ACK_TIMEOUT"); |
| case L2CEVT_L2CA_SEND_FLOW_CONTROL_CREDIT: /* Upper layer send credit packet |
| */ |
| return ("SEND_FLOW_CONTROL_CREDIT"); |
| case L2CEVT_L2CA_CREDIT_BASED_CONNECT_REQ: /* Upper layer credit based |
| connect request */ |
| return ("SEND_CREDIT_BASED_CONNECT_REQ"); |
| case L2CEVT_L2CA_CREDIT_BASED_CONNECT_RSP: /* Upper layer credit based |
| connect response */ |
| return ("SEND_CREDIT_BASED_CONNECT_RSP"); |
| case L2CEVT_L2CA_CREDIT_BASED_RECONFIG_REQ: /* Upper layer credit based |
| reconfig request */ |
| return ("SEND_CREDIT_BASED_RECONFIG_REQ"); |
| case L2CEVT_L2CAP_RECV_FLOW_CONTROL_CREDIT: /* Peer send credit packet */ |
| return ("RECV_FLOW_CONTROL_CREDIT"); |
| case L2CEVT_L2CAP_CREDIT_BASED_CONNECT_REQ: /* Peer send credit based |
| connect request */ |
| return ("RECV_CREDIT_BASED_CONNECT_REQ"); |
| case L2CEVT_L2CAP_CREDIT_BASED_CONNECT_RSP: /* Peer send credit based |
| connect response */ |
| return ("RECV_CREDIT_BASED_CONNECT_RSP"); |
| case L2CEVT_L2CAP_CREDIT_BASED_CONNECT_RSP_NEG: /* Peer send reject credit |
| based connect response */ |
| return ("RECV_CREDIT_BASED_CONNECT_RSP_NEG"); |
| case L2CEVT_L2CAP_CREDIT_BASED_RECONFIG_REQ: /* Peer send credit based |
| reconfig request */ |
| return ("RECV_CREDIT_BASED_RECONFIG_REQ"); |
| case L2CEVT_L2CAP_CREDIT_BASED_RECONFIG_RSP: /* Peer send credit based |
| reconfig response */ |
| return ("RECV_CREDIT_BASED_RECONFIG_RSP"); |
| default: |
| return ("???? UNKNOWN EVENT"); |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * Function l2c_enqueue_peer_data |
| * |
| * Description Enqueues data destined for the peer in the ccb. Handles |
| * FCR segmentation and checks for congestion. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| void l2c_enqueue_peer_data(tL2C_CCB* p_ccb, BT_HDR* p_buf) { |
| CHECK(p_ccb != nullptr); |
| |
| p_ccb->metrics.tx(p_buf->len); |
| |
| uint8_t* p; |
| |
| if (p_ccb->peer_cfg.fcr.mode != L2CAP_FCR_BASIC_MODE) { |
| p_buf->event = 0; |
| } else { |
| /* Save the channel ID for faster counting */ |
| p_buf->event = p_ccb->local_cid; |
| |
| /* Step back to add the L2CAP header */ |
| p_buf->offset -= L2CAP_PKT_OVERHEAD; |
| p_buf->len += L2CAP_PKT_OVERHEAD; |
| |
| /* Set the pointer to the beginning of the data */ |
| p = (uint8_t*)(p_buf + 1) + p_buf->offset; |
| |
| /* Now the L2CAP header */ |
| UINT16_TO_STREAM(p, p_buf->len - L2CAP_PKT_OVERHEAD); |
| UINT16_TO_STREAM(p, p_ccb->remote_cid); |
| } |
| |
| if (p_ccb->xmit_hold_q == NULL) { |
| LOG_ERROR( |
| "empty queue: p_ccb = %p p_ccb->in_use = %d p_ccb->chnl_state = %d " |
| "p_ccb->local_cid = %u p_ccb->remote_cid = %u", |
| p_ccb, p_ccb->in_use, p_ccb->chnl_state, p_ccb->local_cid, |
| p_ccb->remote_cid); |
| } else { |
| fixed_queue_enqueue(p_ccb->xmit_hold_q, p_buf); |
| } |
| |
| l2cu_check_channel_congestion(p_ccb); |
| |
| /* if new packet is higher priority than serving ccb and it is not overrun */ |
| if ((p_ccb->p_lcb->rr_pri > p_ccb->ccb_priority) && |
| (p_ccb->p_lcb->rr_serv[p_ccb->ccb_priority].quota > 0)) { |
| /* send out higher priority packet */ |
| p_ccb->p_lcb->rr_pri = p_ccb->ccb_priority; |
| } |
| |
| /* if we are doing a round robin scheduling, set the flag */ |
| if (p_ccb->p_lcb->link_xmit_quota == 0) l2cb.check_round_robin = true; |
| } |
