| /****************************************************************************** |
| * |
| * Copyright (C) 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 |
| * |
| ******************************************************************************/ |
| |
| #include <stdlib.h> |
| #include <string.h> |
| #include <stdio.h> |
| |
| #include "bt_target.h" |
| #include "bt_common.h" |
| #include "hcidefs.h" |
| #include "hcimsgs.h" |
| #include "l2cdefs.h" |
| #include "l2c_int.h" |
| #include "btm_int.h" |
| #include "btu.h" |
| #include "hcimsgs.h" |
| |
| |
| extern fixed_queue_t *btu_general_alarm_queue; |
| |
| /********************************************************************************/ |
| /* 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, UINT16 event, void *p_data); |
| static void l2c_csm_orig_w4_sec_comp (tL2C_CCB *p_ccb, UINT16 event, void *p_data); |
| static void l2c_csm_term_w4_sec_comp (tL2C_CCB *p_ccb, UINT16 event, void *p_data); |
| static void l2c_csm_w4_l2cap_connect_rsp (tL2C_CCB *p_ccb, UINT16 event, void *p_data); |
| static void l2c_csm_w4_l2ca_connect_rsp (tL2C_CCB *p_ccb, UINT16 event, void *p_data); |
| static void l2c_csm_config (tL2C_CCB *p_ccb, UINT16 event, void *p_data); |
| static void l2c_csm_open (tL2C_CCB *p_ccb, UINT16 event, void *p_data); |
| static void l2c_csm_w4_l2cap_disconnect_rsp (tL2C_CCB *p_ccb, UINT16 event, void *p_data); |
| static void l2c_csm_w4_l2ca_disconnect_rsp (tL2C_CCB *p_ccb, UINT16 event, void *p_data); |
| |
| #if (BT_TRACE_VERBOSE == TRUE) |
| static char *l2c_csm_get_event_name (UINT16 event); |
| #endif |
| |
| /******************************************************************************* |
| ** |
| ** Function l2c_csm_execute |
| ** |
| ** Description This function executes the state machine. |
| ** |
| ** Returns void |
| ** |
| *******************************************************************************/ |
| void l2c_csm_execute (tL2C_CCB *p_ccb, UINT16 event, void *p_data) |
| { |
| if (!l2cu_is_ccb_active(p_ccb)) { |
| L2CAP_TRACE_WARNING("%s CCB not in use, event (%d) cannot be processed", __func__, event); |
| return; |
| } |
| |
| 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: |
| L2CAP_TRACE_DEBUG("Unhandled event! event = %d",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, UINT16 event, void *p_data) |
| { |
| tL2C_CONN_INFO *p_ci = (tL2C_CONN_INFO *)p_data; |
| UINT16 local_cid = p_ccb->local_cid; |
| tL2CA_DISCONNECT_IND_CB *disconnect_ind; |
| tL2CA_CONNECT_CFM_CB *connect_cfm; |
| |
| if (p_ccb->p_rcb == NULL) |
| { |
| #if (BT_TRACE_VERBOSE == TRUE) |
| L2CAP_TRACE_ERROR ("L2CAP - LCID: 0x%04x st: CLOSED evt: %s p_rcb == NULL", p_ccb->local_cid, l2c_csm_get_event_name (event)); |
| #else |
| L2CAP_TRACE_ERROR ("L2CAP - LCID: 0x%04x st: CLOSED evt: 0x%04x p_rcb == NULL", p_ccb->local_cid, event); |
| #endif |
| return; |
| } |
| |
| #if (L2CAP_UCD_INCLUDED == TRUE) |
| if ( local_cid == L2CAP_CONNECTIONLESS_CID ) |
| { |
| /* check if this event can be processed by UCD */ |
| if ( l2c_ucd_process_event (p_ccb, event, p_data) ) |
| { |
| /* The event is processed by UCD state machine */ |
| return; |
| } |
| } |
| #endif |
| |
| disconnect_ind = p_ccb->p_rcb->api.pL2CA_DisconnectInd_Cb; |
| connect_cfm = p_ccb->p_rcb->api.pL2CA_ConnectCfm_Cb; |
| |
| #if (BT_TRACE_VERBOSE == TRUE) |
| L2CAP_TRACE_EVENT ("L2CAP - LCID: 0x%04x st: CLOSED evt: %s", p_ccb->local_cid, l2c_csm_get_event_name (event)); |
| #else |
| L2CAP_TRACE_EVENT ("L2CAP - st: CLOSED evt: %d", event); |
| #endif |
| |
| switch (event) |
| { |
| case L2CEVT_LP_DISCONNECT_IND: /* Link was disconnected */ |
| L2CAP_TRACE_API ("L2CAP - 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_comp, 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, |
| p_ccb->p_lcb->handle, TRUE, &l2c_link_sec_comp, p_ccb); |
| } |
| break; |
| |
| case L2CEVT_LP_CONNECT_CFM_NEG: /* Link failed */ |
| /* Disconnect unless ACL collision and upper layer wants to handle it */ |
| if (p_ci->status != HCI_ERR_CONNECTION_EXISTS |
| || !btm_acl_notif_conn_collision(p_ccb->p_lcb->remote_bd_addr)) |
| { |
| L2CAP_TRACE_API ("L2CAP - Calling ConnectCfm_Cb(), CID: 0x%04x Status: %d", p_ccb->local_cid, p_ci->status); |
| l2cu_release_ccb (p_ccb); |
| (*connect_cfm)(local_cid, p_ci->status); |
| } |
| break; |
| |
| case L2CEVT_L2CA_CONNECT_REQ: /* API connect request */ |
| 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_comp, p_ccb); |
| } |
| else |
| { |
| /* Cancel sniff mode if needed */ |
| { |
| tBTM_PM_PWR_MD settings; |
| memset((void*)&settings, 0, sizeof(settings)); |
| settings.mode = BTM_PM_MD_ACTIVE; |
| /* COVERITY |
| Event uninit_use_in_call: Using uninitialized value "settings" (field "settings".timeout uninitialized) in call to function "BTM_SetPowerMode" [details] |
| Event uninit_use_in_call: Using uninitialized value "settings.max" in call to function "BTM_SetPowerMode" [details] |
| Event uninit_use_in_call: Using uninitialized value "settings.min" in call to function "BTM_SetPowerMode" |
| // FALSE-POSITIVE error from Coverity test-tool. Please do NOT remove following comment. |
| // coverity[uninit_use_in_call] False-positive: setting the mode to BTM_PM_MD_ACTIVE only uses settings.mode the other data members of tBTM_PM_PWR_MD are ignored |
| */ |
| BTM_SetPowerMode (BTM_PM_SET_ONLY_ID, p_ccb->p_lcb->remote_bd_addr, &settings); |
| } |
| |
| /* 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, |
| p_ccb->p_lcb->handle, 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_ConnectCfm_Cb)(local_cid, L2CAP_CONN_NO_LINK); |
| } |
| else |
| { |
| l2cu_send_peer_connect_req (p_ccb); |
| alarm_set_on_queue(p_ccb->l2c_ccb_timer, |
| L2CAP_CHNL_CONNECT_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb, |
| btu_general_alarm_queue); |
| } |
| } |
| break; |
| |
| case L2CEVT_SEC_COMP_NEG: /* something is really bad with security */ |
| L2CAP_TRACE_API ("L2CAP - Calling ConnectCfm_Cb(), CID: 0x%04x Status: %d", p_ccb->local_cid, L2CAP_CONN_TIMEOUT); |
| l2cu_release_ccb (p_ccb); |
| (*connect_cfm)(local_cid, L2CAP_CONN_SECURITY_BLOCK); |
| break; |
| |
| case L2CEVT_L2CAP_CONNECT_REQ: /* Peer connect request */ |
| /* 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; |
| l2ble_sec_access_req(p_ccb->p_lcb->remote_bd_addr, p_ccb->p_rcb->psm, FALSE, |
| &l2c_link_sec_comp, p_ccb); |
| } |
| else |
| { |
| /* Cancel sniff mode if needed */ |
| { |
| tBTM_PM_PWR_MD settings; |
| memset((void*)&settings, 0, sizeof(settings)); |
| settings.mode = BTM_PM_MD_ACTIVE; |
| /* COVERITY |
| Event uninit_use_in_call: Using uninitialized value "settings" (field "settings".timeout uninitialized) in call to function "BTM_SetPowerMode" [details] |
| Event uninit_use_in_call: Using uninitialized value "settings.max" in call to function "BTM_SetPowerMode" [details] |
| Event uninit_use_in_call: Using uninitialized value "settings.min" in call to function "BTM_SetPowerMode" |
| // FALSE-POSITIVE error from Coverity test-tool. Please do NOT remove following comment. |
| // coverity[uninit_use_in_call] False-positive: setting the mode to BTM_PM_MD_ACTIVE only uses settings.mode the other data members of tBTM_PM_PWR_MD are ignored |
| */ |
| BTM_SetPowerMode (BTM_PM_SET_ONLY_ID, p_ccb->p_lcb->remote_bd_addr, &settings); |
| } |
| |
| p_ccb->chnl_state = CST_TERM_W4_SEC_COMP; |
| if (btm_sec_l2cap_access_req (p_ccb->p_lcb->remote_bd_addr, p_ccb->p_rcb->psm, |
| p_ccb->p_lcb->handle, FALSE, &l2c_link_sec_comp, p_ccb) == 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); |
| } |
| } |
| break; |
| |
| case L2CEVT_TIMEOUT: |
| L2CAP_TRACE_API ("L2CAP - Calling ConnectCfm_Cb(), CID: 0x%04x Status: %d", p_ccb->local_cid, L2CAP_CONN_TIMEOUT); |
| l2cu_release_ccb (p_ccb); |
| (*connect_cfm)(local_cid, L2CAP_CONN_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; |
| |
| case L2CEVT_L2CA_DISCONNECT_REQ: /* Upper wants to disconnect */ |
| l2cu_release_ccb (p_ccb); |
| break; |
| |
| case L2CEVT_L2CA_SEND_FLOW_CONTROL_CREDIT: |
| case L2CEVT_L2CAP_RECV_FLOW_CONTROL_CREDIT: |
| osi_free(p_data); |
| break; |
| } |
| } |
| |
| |
| /******************************************************************************* |
| ** |
| ** 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, UINT16 event, void *p_data) |
| { |
| tL2CA_DISCONNECT_IND_CB *disconnect_ind = p_ccb->p_rcb->api.pL2CA_DisconnectInd_Cb; |
| tL2CA_CONNECT_CFM_CB *connect_cfm = p_ccb->p_rcb->api.pL2CA_ConnectCfm_Cb; |
| UINT16 local_cid = p_ccb->local_cid; |
| |
| #if (BT_TRACE_VERBOSE == TRUE) |
| L2CAP_TRACE_EVENT ("L2CAP - LCID: 0x%04x st: ORIG_W4_SEC_COMP evt: %s", p_ccb->local_cid, l2c_csm_get_event_name (event)); |
| #else |
| L2CAP_TRACE_EVENT ("L2CAP - st: ORIG_W4_SEC_COMP evt: %d", event); |
| #endif |
| |
| #if (L2CAP_UCD_INCLUDED == TRUE) |
| if ( local_cid == L2CAP_CONNECTIONLESS_CID ) |
| { |
| /* check if this event can be processed by UCD */ |
| if ( l2c_ucd_process_event (p_ccb, event, p_data) ) |
| { |
| /* The event is processed by UCD state machine */ |
| return; |
| } |
| } |
| #endif |
| |
| switch (event) |
| { |
| case L2CEVT_LP_DISCONNECT_IND: /* Link was disconnected */ |
| L2CAP_TRACE_API ("L2CAP - 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_comp, p_ccb); |
| } |
| else |
| { |
| btm_sec_l2cap_access_req (p_ccb->p_lcb->remote_bd_addr, p_ccb->p_rcb->psm, |
| p_ccb->p_lcb->handle, 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_queue(p_ccb->l2c_ccb_timer, |
| L2CAP_CHNL_CONNECT_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb, |
| btu_general_alarm_queue); |
| 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); |
| (*connect_cfm)(local_cid, L2CAP_CONN_NO_LINK); |
| } |
| else |
| { |
| alarm_set_on_queue(p_ccb->l2c_ccb_timer, |
| L2CAP_CHNL_CONNECT_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb, |
| btu_general_alarm_queue); |
| l2cu_send_peer_connect_req (p_ccb); /* Start Connection */ |
| } |
| } |
| } |
| break; |
| |
| case L2CEVT_SEC_COMP_NEG: |
| L2CAP_TRACE_API ("L2CAP - Calling ConnectCfm_Cb(), CID: 0x%04x Status: %d", p_ccb->local_cid, HCI_ERR_AUTH_FAILURE); |
| |
| /* 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); |
| (*connect_cfm)(local_cid, HCI_ERR_AUTH_FAILURE); |
| 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; |
| } |
| } |
| |
| |
| /******************************************************************************* |
| ** |
| ** 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, UINT16 event, void *p_data) |
| { |
| #if (BT_TRACE_VERBOSE == TRUE) |
| L2CAP_TRACE_EVENT ("L2CAP - LCID: 0x%04x st: TERM_W4_SEC_COMP evt: %s", p_ccb->local_cid, l2c_csm_get_event_name (event)); |
| #else |
| L2CAP_TRACE_EVENT ("L2CAP - st: TERM_W4_SEC_COMP evt: %d", event); |
| #endif |
| |
| #if (L2CAP_UCD_INCLUDED == TRUE) |
| if ( p_ccb->local_cid == L2CAP_CONNECTIONLESS_CID ) |
| { |
| /* check if this event can be processed by UCD */ |
| if ( l2c_ucd_process_event (p_ccb, event, p_data) ) |
| { |
| /* The event is processed by UCD state machine */ |
| return; |
| } |
| } |
| #endif |
| |
| 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) |
| { |
| /* Don't need to get info from peer or already retrieved so continue */ |
| alarm_set_on_queue(p_ccb->l2c_ccb_timer, |
| L2CAP_CHNL_CONNECT_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb, |
| btu_general_alarm_queue); |
| L2CAP_TRACE_API ("L2CAP - Calling Connect_Ind_Cb(), CID: 0x%04x", p_ccb->local_cid); |
| |
| (*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); |
| } |
| 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 |
| */ |
| |
| /* Waiting for the info resp, tell the peer to set a longer timer */ |
| 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_queue(p_ccb->l2c_ccb_timer, |
| L2CAP_DELAY_CHECK_SM4_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb, |
| btu_general_alarm_queue); |
| } |
| else |
| { |
| if (p_ccb->p_lcb->transport == BT_TRANSPORT_LE) |
| l2cu_reject_ble_connection(p_ccb->p_lcb, p_ccb->remote_id, L2CAP_LE_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. */ |
| if (!btsnd_hcic_disconnect (p_ccb->p_lcb->handle, HCI_ERR_AUTH_FAILURE)) |
| { |
| L2CAP_TRACE_API ("L2CAP - Calling btsnd_hcic_disconnect for handle %i failed", p_ccb->p_lcb->handle); |
| alarm_set_on_queue(p_ccb->l2c_ccb_timer, BT_1SEC_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb, |
| btu_general_alarm_queue); |
| } |
| 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, |
| p_ccb->p_lcb->handle, FALSE, &l2c_link_sec_comp, p_ccb); |
| break; |
| } |
| } |
| |
| |
| /******************************************************************************* |
| ** |
| ** 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, UINT16 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_CONNECT_CFM_CB *connect_cfm = p_ccb->p_rcb->api.pL2CA_ConnectCfm_Cb; |
| UINT16 local_cid = p_ccb->local_cid; |
| |
| #if (BT_TRACE_VERBOSE == TRUE) |
| L2CAP_TRACE_EVENT ("L2CAP - LCID: 0x%04x st: W4_L2CAP_CON_RSP evt: %s", p_ccb->local_cid, l2c_csm_get_event_name (event)); |
| #else |
| L2CAP_TRACE_EVENT ("L2CAP - st: W4_L2CAP_CON_RSP evt: %d", event); |
| #endif |
| |
| switch (event) |
| { |
| case L2CEVT_LP_DISCONNECT_IND: /* Link was disconnected */ |
| /* Send disc indication unless peer to peer race condition AND normal disconnect */ |
| /* *((UINT8 *)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 *)p_data) != HCI_ERR_PEER_USER)) |
| { |
| L2CAP_TRACE_API ("L2CAP - 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; |
| } |
| else |
| { |
| p_ccb->chnl_state = CST_CONFIG; |
| alarm_set_on_queue(p_ccb->l2c_ccb_timer, L2CAP_CHNL_CFG_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb, |
| btu_general_alarm_queue); |
| } |
| L2CAP_TRACE_API ("L2CAP - Calling Connect_Cfm_Cb(), CID: 0x%04x, Success", p_ccb->local_cid); |
| |
| (*p_ccb->p_rcb->api.pL2CA_ConnectCfm_Cb)(local_cid, L2CAP_CONN_OK); |
| break; |
| |
| case L2CEVT_L2CAP_CONNECT_RSP_PND: /* Got peer connect pending */ |
| p_ccb->remote_cid = p_ci->remote_cid; |
| alarm_set_on_queue(p_ccb->l2c_ccb_timer, |
| L2CAP_CHNL_CONNECT_EXT_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb, |
| btu_general_alarm_queue); |
| if (p_ccb->p_rcb->api.pL2CA_ConnectPnd_Cb) |
| { |
| L2CAP_TRACE_API ("L2CAP - Calling Connect_Pnd_Cb(), CID: 0x%04x", p_ccb->local_cid); |
| (*p_ccb->p_rcb->api.pL2CA_ConnectPnd_Cb)(p_ccb->local_cid); |
| } |
| break; |
| |
| case L2CEVT_L2CAP_CONNECT_RSP_NEG: /* Peer rejected connection */ |
| L2CAP_TRACE_API ("L2CAP - Calling Connect_Cfm_Cb(), CID: 0x%04x, Failure Code: %d", p_ccb->local_cid, p_ci->l2cap_result); |
| l2cu_release_ccb (p_ccb); |
| (*connect_cfm)(local_cid, p_ci->l2cap_result); |
| break; |
| |
| case L2CEVT_TIMEOUT: |
| L2CAP_TRACE_API ("L2CAP - Calling Connect_Cfm_Cb(), CID: 0x%04x, Timeout", p_ccb->local_cid); |
| l2cu_release_ccb (p_ccb); |
| (*connect_cfm)(local_cid, L2CAP_CONN_TIMEOUT); |
| 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_queue(p_ccb->l2c_ccb_timer, |
| L2CAP_CHNL_DISCONNECT_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb, |
| btu_general_alarm_queue); |
| } |
| else |
| 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_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); |
| (*connect_cfm)(local_cid, L2CAP_CONN_NO_LINK); |
| } |
| else |
| { |
| /* We have feature info, so now send peer connect request */ |
| alarm_set_on_queue(p_ccb->l2c_ccb_timer, |
| L2CAP_CHNL_CONNECT_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb, |
| btu_general_alarm_queue); |
| l2cu_send_peer_connect_req (p_ccb); /* Start Connection */ |
| } |
| break; |
| |
| case L2CEVT_L2CA_SEND_FLOW_CONTROL_CREDIT: |
| case L2CEVT_L2CAP_RECV_FLOW_CONTROL_CREDIT: |
| osi_free(p_data); |
| break; |
| } |
| } |
| |
| |
| /******************************************************************************* |
| ** |
| ** 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, UINT16 event, void *p_data) |
| { |
| tL2C_CONN_INFO *p_ci; |
| tL2CA_DISCONNECT_IND_CB *disconnect_ind = p_ccb->p_rcb->api.pL2CA_DisconnectInd_Cb; |
| UINT16 local_cid = p_ccb->local_cid; |
| |
| #if (BT_TRACE_VERBOSE == TRUE) |
| L2CAP_TRACE_EVENT ("L2CAP - LCID: 0x%04x st: W4_L2CA_CON_RSP evt: %s", p_ccb->local_cid, l2c_csm_get_event_name (event)); |
| #else |
| L2CAP_TRACE_EVENT ("L2CAP - st: W4_L2CA_CON_RSP evt: %d", event); |
| #endif |
| |
| switch (event) |
| { |
| case L2CEVT_LP_DISCONNECT_IND: /* Link was disconnected */ |
| L2CAP_TRACE_API ("L2CAP - 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_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)) |
| { |
| l2cu_send_peer_connect_rsp (p_ccb, L2CAP_CONN_OK, 0); |
| p_ccb->chnl_state = CST_CONFIG; |
| alarm_set_on_queue(p_ccb->l2c_ccb_timer, |
| L2CAP_CHNL_CFG_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb, |
| btu_general_alarm_queue); |
| } |
| else |
| { |
| /* If pending, stay in same state and start extended timer */ |
| l2cu_send_peer_connect_rsp (p_ccb, p_ci->l2cap_result, p_ci->l2cap_status); |
| alarm_set_on_queue(p_ccb->l2c_ccb_timer, |
| L2CAP_CHNL_CONNECT_EXT_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb, |
| btu_general_alarm_queue); |
| } |
| } |
| 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); |
| L2CAP_TRACE_API ("L2CAP - 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_queue(p_ccb->l2c_ccb_timer, |
| L2CAP_CHNL_DISCONNECT_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb, |
| btu_general_alarm_queue); |
| break; |
| |
| case L2CEVT_L2CAP_INFO_RSP: |
| /* We have feature info, so now give the upper layer connect IND */ |
| alarm_set_on_queue(p_ccb->l2c_ccb_timer, |
| L2CAP_CHNL_CONNECT_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb, |
| btu_general_alarm_queue); |
| L2CAP_TRACE_API ("L2CAP - Calling Connect_Ind_Cb(), CID: 0x%04x", p_ccb->local_cid); |
| |
| (*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); |
| break; |
| } |
| } |
| |
| |
| /******************************************************************************* |
| ** |
| ** 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, UINT16 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 local_cid = p_ccb->local_cid; |
| UINT8 cfg_result; |
| |
| #if (BT_TRACE_VERBOSE == TRUE) |
| L2CAP_TRACE_EVENT ("L2CAP - LCID: 0x%04x st: CONFIG evt: %s", p_ccb->local_cid, l2c_csm_get_event_name (event)); |
| #else |
| L2CAP_TRACE_EVENT ("L2CAP - st: CONFIG evt: %d", event); |
| #endif |
| |
| switch (event) |
| { |
| case L2CEVT_LP_DISCONNECT_IND: /* Link was disconnected */ |
| L2CAP_TRACE_API ("L2CAP - 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_CONFIG_REQ: /* Peer config request */ |
| |
| if ((cfg_result = l2cu_process_peer_cfg_req (p_ccb, p_cfg)) == L2CAP_PEER_CFG_OK) |
| { |
| L2CAP_TRACE_EVENT ("L2CAP - Calling Config_Req_Cb(), CID: 0x%04x, C-bit %d", |
| p_ccb->local_cid, (p_cfg->flags & L2CAP_CFG_FLAGS_MASK_CONT)); |
| (*p_ccb->p_rcb->api.pL2CA_ConfigInd_Cb)(p_ccb->local_cid, p_cfg); |
| } |
| else if (cfg_result == L2CAP_PEER_CFG_DISCONNECT) |
| { |
| /* Disconnect if channels are incompatible */ |
| L2CAP_TRACE_EVENT ("L2CAP - incompatible configurations disconnect"); |
| l2cu_disconnect_chnl (p_ccb); |
| } |
| else /* Return error to peer so he can renegotiate if possible */ |
| { |
| L2CAP_TRACE_EVENT ("L2CAP - incompatible configurations trying reconfig"); |
| l2cu_send_peer_config_rsp (p_ccb, p_cfg); |
| } |
| break; |
| |
| case L2CEVT_L2CAP_CONFIG_RSP: /* Peer config response */ |
| l2cu_process_peer_cfg_rsp (p_ccb, p_cfg); |
| |
| if (p_cfg->result != L2CAP_CFG_PENDING) |
| { |
| /* 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); |
| L2CAP_TRACE_WARNING ("L2CAP - 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); |
| } |
| |
| #if (L2CAP_ERTM_STATS == TRUE) |
| p_ccb->fcrb.connect_tick_count = time_get_os_boottime_ms(); |
| #endif |
| /* 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, NULL, NULL); |
| } |
| } |
| } |
| |
| L2CAP_TRACE_API ("L2CAP - Calling Config_Rsp_Cb(), CID: 0x%04x", p_ccb->local_cid); |
| (*p_ccb->p_rcb->api.pL2CA_ConfigCfm_Cb)(p_ccb->local_cid, p_cfg); |
| 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) == FALSE) |
| { |
| L2CAP_TRACE_API ("L2CAP - Calling Config_Rsp_Cb(), CID: 0x%04x, Failure: %d", p_ccb->local_cid, p_cfg->result); |
| (*p_ccb->p_rcb->api.pL2CA_ConfigCfm_Cb)(p_ccb->local_cid, p_cfg); |
| } |
| break; |
| |
| case L2CEVT_L2CAP_DISCONNECT_REQ: /* Peer disconnected request */ |
| alarm_set_on_queue(p_ccb->l2c_ccb_timer, |
| L2CAP_CHNL_DISCONNECT_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb, |
| btu_general_alarm_queue); |
| p_ccb->chnl_state = CST_W4_L2CA_DISCONNECT_RSP; |
| L2CAP_TRACE_API ("L2CAP - 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); |
| 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_queue(p_ccb->l2c_ccb_timer, |
| L2CAP_CHNL_CFG_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb, |
| btu_general_alarm_queue); |
| break; |
| |
| case L2CEVT_L2CA_CONFIG_RSP: /* Upper layer config rsp */ |
| l2cu_process_our_cfg_rsp (p_ccb, p_cfg); |
| |
| /* Not finished if continuation flag is set */ |
| if ( (p_cfg->flags & L2CAP_CFG_FLAGS_MASK_CONT) || (p_cfg->result == L2CAP_CFG_PENDING) ) |
| { |
| /* Send intermediate response; remain in cfg state */ |
| l2cu_send_peer_config_rsp (p_ccb, p_cfg); |
| break; |
| } |
| |
| /* Local config done; 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; |
| |
| 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); |
| L2CAP_TRACE_WARNING ("L2CAP - 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); |
| |
| #if (L2CAP_ERTM_STATS == TRUE) |
| p_ccb->fcrb.connect_tick_count = time_get_os_boottime_ms(); |
| #endif |
| |
| /* 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, NULL, NULL); |
| } |
| break; |
| |
| case L2CEVT_L2CA_CONFIG_RSP_NEG: /* Upper layer config reject */ |
| l2cu_send_peer_config_rsp (p_ccb, p_cfg); |
| alarm_set_on_queue(p_ccb->l2c_ccb_timer, |
| L2CAP_CHNL_CFG_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb, |
| btu_general_alarm_queue); |
| 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_queue(p_ccb->l2c_ccb_timer, |
| L2CAP_CHNL_DISCONNECT_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb, |
| btu_general_alarm_queue); |
| break; |
| |
| case L2CEVT_L2CAP_DATA: /* Peer data packet rcvd */ |
| L2CAP_TRACE_API ("L2CAP - Calling DataInd_Cb(), CID: 0x%04x", p_ccb->local_cid); |
| #if (L2CAP_NUM_FIXED_CHNLS > 0) |
| 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) |
| (*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 |
| osi_free(p_data); |
| break; |
| } |
| } |
| #endif |
| (*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: |
| l2cu_send_peer_disc_req (p_ccb); |
| L2CAP_TRACE_API ("L2CAP - 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; |
| } |
| } |
| |
| |
| /******************************************************************************* |
| ** |
| ** 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, UINT16 event, void *p_data) |
| { |
| UINT16 local_cid = p_ccb->local_cid; |
| tL2CAP_CFG_INFO *p_cfg; |
| tL2C_CHNL_STATE tempstate; |
| UINT8 tempcfgdone; |
| UINT8 cfg_result; |
| UINT16 *credit; |
| |
| #if (BT_TRACE_VERBOSE == TRUE) |
| L2CAP_TRACE_EVENT ("L2CAP - LCID: 0x%04x st: OPEN evt: %s", |
| p_ccb->local_cid, l2c_csm_get_event_name (event)); |
| #else |
| L2CAP_TRACE_EVENT ("L2CAP - st: OPEN evt: %d", event); |
| #endif |
| |
| #if (L2CAP_UCD_INCLUDED == TRUE) |
| if ( local_cid == L2CAP_CONNECTIONLESS_CID ) |
| { |
| /* check if this event can be processed by UCD */ |
| if ( l2c_ucd_process_event (p_ccb, event, p_data) ) |
| { |
| /* The event is processed by UCD state machine */ |
| return; |
| } |
| } |
| #endif |
| |
| switch (event) |
| { |
| case L2CEVT_LP_DISCONNECT_IND: /* Link was disconnected */ |
| L2CAP_TRACE_API ("L2CAP - 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_LP_QOS_VIOLATION_IND: /* QOS violation */ |
| /* Tell upper layer. If service guaranteed, then clear the channel */ |
| if (p_ccb->p_rcb->api.pL2CA_QoSViolationInd_Cb) |
| (*p_ccb->p_rcb->api.pL2CA_QoSViolationInd_Cb)(p_ccb->p_lcb->remote_bd_addr); |
| 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; |
| p_ccb->config_done &= ~CFG_DONE_MASK; |
| |
| alarm_set_on_queue(p_ccb->l2c_ccb_timer, |
| L2CAP_CHNL_CFG_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb, |
| btu_general_alarm_queue); |
| |
| if ((cfg_result = l2cu_process_peer_cfg_req (p_ccb, p_cfg)) == L2CAP_PEER_CFG_OK) |
| { |
| (*p_ccb->p_rcb->api.pL2CA_ConfigInd_Cb)(p_ccb->local_cid, p_cfg); |
| } |
| |
| /* 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) |
| { |
| /* Make sure we are not in sniff mode */ |
| { |
| tBTM_PM_PWR_MD settings; |
| memset((void*)&settings, 0, sizeof(settings)); |
| settings.mode = BTM_PM_MD_ACTIVE; |
| BTM_SetPowerMode (BTM_PM_SET_ONLY_ID, p_ccb->p_lcb->remote_bd_addr, &settings); |
| } |
| } |
| |
| p_ccb->chnl_state = CST_W4_L2CA_DISCONNECT_RSP; |
| alarm_set_on_queue(p_ccb->l2c_ccb_timer, |
| L2CAP_CHNL_DISCONNECT_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb, |
| btu_general_alarm_queue); |
| L2CAP_TRACE_API ("L2CAP - 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); |
| break; |
| |
| case L2CEVT_L2CAP_DATA: /* Peer data packet rcvd */ |
| if ((p_ccb->p_rcb) && (p_ccb->p_rcb->api.pL2CA_DataInd_Cb)) |
| (*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 */ |
| { |
| tBTM_PM_PWR_MD settings; |
| memset((void*)&settings, 0, sizeof(settings)); |
| settings.mode = BTM_PM_MD_ACTIVE; |
| BTM_SetPowerMode (BTM_PM_SET_ONLY_ID, p_ccb->p_lcb->remote_bd_addr, &settings); |
| } |
| } |
| |
| 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_queue(p_ccb->l2c_ccb_timer, |
| L2CAP_CHNL_DISCONNECT_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb, |
| btu_general_alarm_queue); |
| 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, NULL, NULL); |
| break; |
| |
| case L2CEVT_L2CA_CONFIG_REQ: /* Upper layer config req */ |
| p_ccb->chnl_state = CST_CONFIG; |
| p_ccb->config_done &= ~CFG_DONE_MASK; |
| l2cu_process_our_cfg_req (p_ccb, (tL2CAP_CFG_INFO *)p_data); |
| l2cu_send_peer_config_req (p_ccb, (tL2CAP_CFG_INFO *)p_data); |
| alarm_set_on_queue(p_ccb->l2c_ccb_timer, |
| L2CAP_CHNL_CFG_TIMEOUT_MS, |
| l2c_ccb_timer_timeout, p_ccb, |
| btu_general_alarm_queue); |
| 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: |
| L2CAP_TRACE_DEBUG("%s Sending credit",__func__); |
| credit = (UINT16*)p_data; |
| l2cble_send_flow_control_credit(p_ccb, *credit); |
| break; |
| |
| case L2CEVT_L2CAP_RECV_FLOW_CONTROL_CREDIT: |
| credit = (UINT16*)p_data; |
| L2CAP_TRACE_DEBUG("%s Credits received %d",__func__, *credit); |
| if((p_ccb->peer_conn_cfg.credits + *credit) > L2CAP_LE_MAX_CREDIT) |
| { |
| /* 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, NULL, NULL); |
| } |
| break; |
| } |
| } |
| |
| |
| /******************************************************************************* |
| ** |
| ** 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, UINT16 event, void *p_data) |
| { |
| tL2CA_DISCONNECT_CFM_CB *disconnect_cfm = p_ccb->p_rcb->api.pL2CA_DisconnectCfm_Cb; |
| UINT16 local_cid = p_ccb->local_cid; |
| |
| #if (BT_TRACE_VERBOSE == TRUE) |
| L2CAP_TRACE_EVENT ("L2CAP - LCID: 0x%04x st: W4_L2CAP_DISC_RSP evt: %s", p_ccb->local_cid, l2c_csm_get_event_name (event)); |
| #else |
| L2CAP_TRACE_EVENT ("L2CAP - st: W4_L2CAP_DISC_RSP evt: %d", event); |
| #endif |
| |
| switch (event) |
| { |
| case L2CEVT_L2CAP_DISCONNECT_RSP: /* Peer disconnect response */ |
| l2cu_release_ccb (p_ccb); |
| if (disconnect_cfm) |
| { |
| L2CAP_TRACE_API ("L2CAP - Calling DisconnectCfm_Cb(), CID: 0x%04x", local_cid); |
| (*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) |
| { |
| L2CAP_TRACE_API ("L2CAP - Calling DisconnectCfm_Cb(), CID: 0x%04x", local_cid); |
| (*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) |
| { |
| L2CAP_TRACE_API ("L2CAP - Calling DisconnectCfm_Cb(), CID: 0x%04x", local_cid); |
| (*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; |
| |
| case L2CEVT_L2CA_SEND_FLOW_CONTROL_CREDIT: |
| case L2CEVT_L2CAP_RECV_FLOW_CONTROL_CREDIT: |
| osi_free(p_data); |
| break; |
| } |
| } |
| |
| |
| /******************************************************************************* |
| ** |
| ** 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, UINT16 event, void *p_data) |
| { |
| tL2CA_DISCONNECT_IND_CB *disconnect_ind = p_ccb->p_rcb->api.pL2CA_DisconnectInd_Cb; |
| UINT16 local_cid = p_ccb->local_cid; |
| |
| #if (BT_TRACE_VERBOSE == TRUE) |
| L2CAP_TRACE_EVENT ("L2CAP - LCID: 0x%04x st: W4_L2CA_DISC_RSP evt: %s", p_ccb->local_cid, l2c_csm_get_event_name (event)); |
| #else |
| L2CAP_TRACE_EVENT ("L2CAP - st: W4_L2CA_DISC_RSP evt: %d", event); |
| #endif |
| |
| switch (event) |
| { |
| case L2CEVT_LP_DISCONNECT_IND: /* Link was disconnected */ |
| L2CAP_TRACE_API ("L2CAP - 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); |
| L2CAP_TRACE_API ("L2CAP - 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; |
| } |
| } |
| |
| |
| #if (BT_TRACE_VERBOSE == TRUE) |
| /******************************************************************************* |
| ** |
| ** 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 char *l2c_csm_get_event_name (UINT16 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_LP_QOS_CFM: /* Lower layer QOS confirmation */ |
| return ("LOWER_LAYER_QOS_CFM"); |
| case L2CEVT_LP_QOS_CFM_NEG: /* Lower layer QOS confirmation (failed)*/ |
| return ("LOWER_LAYER_QOS_CFM_NEG"); |
| case L2CEVT_LP_QOS_VIOLATION_IND: /* Lower layer QOS violation indication */ |
| return ("LOWER_LAYER_QOS_VIOLATION_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_CONFIG_RSP_NEG: /* Upper layer config response (failed) */ |
| return ("UPPER_LAYER_CONFIG_RSP_NEG"); |
| 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_L2CAP_RECV_FLOW_CONTROL_CREDIT: /* Peer send credit packet */ |
| return ("RECV_FLOW_CONTROL_CREDIT"); |
| |
| default: |
| return ("???? UNKNOWN EVENT"); |
| } |
| } |
| #endif /* (BT_TRACE_VERBOSE == TRUE) */ |
| |
| |
| /******************************************************************************* |
| ** |
| ** 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) |
| { |
| UINT8 *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 *)(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) { |
| L2CAP_TRACE_ERROR("%s: 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", |
| __func__, p_ccb, p_ccb->in_use, p_ccb->chnl_state, |
| p_ccb->local_cid, p_ccb->remote_cid); |
| } |
| fixed_queue_enqueue(p_ccb->xmit_hold_q, p_buf); |
| |
| l2cu_check_channel_congestion (p_ccb); |
| |
| #if (L2CAP_ROUND_ROBIN_CHANNEL_SERVICE == TRUE) |
| /* 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; |
| } |
| #endif |
| |
| /* 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; |
| } |
| |
| |
