/***************************************************************************** ** ** Name: l2c_csm.c ** ** Description: This file contains the L2CAP channel state machine ** ** ** ** Copyright (c) 1999-2011, Broadcom Corp, All Rights Reserved. ** Broadcom Bluetooth Core. Proprietary and confidential. ******************************************************************************/ #include #include #include #include "bt_target.h" #include "gki.h" #include "hcidefs.h" #include "hcimsgs.h" #include "l2cdefs.h" #include "l2c_int.h" #include "btm_int.h" #include "btu.h" #include "hcimsgs.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, 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) { 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: 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_ERROR2 ("L2CAP - LCID: 0x%04x st: CLOSED evt: %s p_rcb == NULL", p_ccb->local_cid, l2c_csm_get_event_name (event)); #else L2CAP_TRACE_ERROR2 ("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_EVENT2 ("L2CAP - LCID: 0x%04x st: CLOSED evt: %s", p_ccb->local_cid, l2c_csm_get_event_name (event)); #else L2CAP_TRACE_EVENT1 ("L2CAP - st: CLOSED evt: %d", event); #endif switch (event) { case L2CEVT_LP_DISCONNECT_IND: /* Link was disconnected */ L2CAP_TRACE_API1 ("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 */ 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_API2 ("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 */ /* Cancel sniff mode if needed */ #if BTM_PWR_MGR_INCLUDED == TRUE { tBTM_PM_PWR_MD settings; // btla-specific ++ memset((void*)&settings, 0, sizeof(settings)); // btla-specific -- 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); } #else BTM_CancelSniffMode (p_ccb->p_lcb->remote_bd_addr); #endif /* 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); btu_start_timer (&p_ccb->timer_entry, BTU_TTYPE_L2CAP_CHNL, L2CAP_CHNL_CONNECT_TOUT); } } break; case L2CEVT_SEC_COMP_NEG: /* something is really bad with security */ L2CAP_TRACE_API2 ("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 */ btu_stop_timer (&p_ccb->p_lcb->timer_entry); /* Cancel sniff mode if needed */ #if BTM_PWR_MGR_INCLUDED == TRUE { tBTM_PM_PWR_MD settings; // btla-specific ++ memset((void*)&settings, 0, sizeof(settings)); // btla-specific -- 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); } #else BTM_CancelSniffMode (p_ccb->p_lcb->remote_bd_addr); #endif 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_API2 ("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 */ GKI_freebuf (p_data); break; case L2CEVT_L2CA_DISCONNECT_REQ: /* Upper wants to disconnect */ l2cu_release_ccb (p_ccb); 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_EVENT2 ("L2CAP - LCID: 0x%04x st: ORIG_W4_SEC_COMP evt: %s", p_ccb->local_cid, l2c_csm_get_event_name (event)); #else L2CAP_TRACE_EVENT1 ("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_API1 ("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 */ 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->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 { btu_start_timer (&p_ccb->timer_entry, BTU_TTYPE_L2CAP_CHNL, L2CAP_CHNL_CONNECT_TOUT); l2cu_send_peer_connect_req (p_ccb); /* Start Connection */ } } break; case L2CEVT_SEC_COMP_NEG: L2CAP_TRACE_API2 ("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 */ GKI_freebuf (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_EVENT2 ("L2CAP - LCID: 0x%04x st: TERM_W4_SEC_COMP evt: %s", p_ccb->local_cid, l2c_csm_get_event_name (event)); #else L2CAP_TRACE_EVENT1 ("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 */ btu_start_timer (&p_ccb->timer_entry, BTU_TTYPE_L2CAP_CHNL, L2CAP_CHNL_CONNECT_TOUT); L2CAP_TRACE_API1 ("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 */ btu_start_timer (&p_ccb->timer_entry, BTU_TTYPE_L2CAP_CHNL, L2CAP_DELAY_CHECK_SM4); } 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 */ GKI_freebuf (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_API1 ("L2CAP - Calling btsnd_hcic_disconnect for handle %i failed", p_ccb->p_lcb->handle); btu_start_timer (&p_ccb->timer_entry, BTU_TTYPE_L2CAP_CHNL, 1); } 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_EVENT2 ("L2CAP - LCID: 0x%04x st: W4_L2CAP_CON_RSP evt: %s", p_ccb->local_cid, l2c_csm_get_event_name (event)); #else L2CAP_TRACE_EVENT1 ("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_API1 ("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; p_ccb->chnl_state = CST_CONFIG; btu_start_timer (&p_ccb->timer_entry, BTU_TTYPE_L2CAP_CHNL, L2CAP_CHNL_CFG_TIMEOUT); L2CAP_TRACE_API1 ("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; btu_start_timer (&p_ccb->timer_entry, BTU_TTYPE_L2CAP_CHNL, L2CAP_CHNL_CONNECT_TOUT_EXT); if (p_ccb->p_rcb->api.pL2CA_ConnectPnd_Cb) { L2CAP_TRACE_API1 ("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_API2 ("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_API1 ("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; btu_start_timer (&p_ccb->timer_entry, BTU_TTYPE_L2CAP_CHNL, L2CAP_CHNL_DISCONNECT_TOUT); } 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 */ GKI_freebuf (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 */ btu_start_timer (&p_ccb->timer_entry, BTU_TTYPE_L2CAP_CHNL, L2CAP_CHNL_CONNECT_TOUT); l2cu_send_peer_connect_req (p_ccb); /* Start Connection */ } 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_EVENT2 ("L2CAP - LCID: 0x%04x st: W4_L2CA_CON_RSP evt: %s", p_ccb->local_cid, l2c_csm_get_event_name (event)); #else L2CAP_TRACE_EVENT1 ("L2CAP - st: W4_L2CA_CON_RSP evt: %d", event); #endif switch (event) { case L2CEVT_LP_DISCONNECT_IND: /* Link was disconnected */ L2CAP_TRACE_API1 ("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; /* 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; btu_start_timer (&p_ccb->timer_entry, BTU_TTYPE_L2CAP_CHNL, L2CAP_CHNL_CFG_TIMEOUT); } 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); btu_start_timer (&p_ccb->timer_entry, BTU_TTYPE_L2CAP_CHNL, L2CAP_CHNL_CONNECT_TOUT_EXT); } break; case L2CEVT_L2CA_CONNECT_RSP_NEG: p_ci = (tL2C_CONN_INFO *)p_data; 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_API1 ("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 */ GKI_freebuf (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; btu_start_timer (&p_ccb->timer_entry, BTU_TTYPE_L2CAP_CHNL, L2CAP_CHNL_DISCONNECT_TOUT); break; case L2CEVT_L2CAP_INFO_RSP: /* We have feature info, so now give the upper layer connect IND */ btu_start_timer (&p_ccb->timer_entry, BTU_TTYPE_L2CAP_CHNL, L2CAP_CHNL_CONNECT_TOUT); L2CAP_TRACE_API1 ("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_EVENT2 ("L2CAP - LCID: 0x%04x st: CONFIG evt: %s", p_ccb->local_cid, l2c_csm_get_event_name (event)); #else L2CAP_TRACE_EVENT1 ("L2CAP - st: CONFIG evt: %d", event); #endif switch (event) { case L2CEVT_LP_DISCONNECT_IND: /* Link was disconnected */ L2CAP_TRACE_API1 ("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_EVENT2 ("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_EVENT0 ("L2CAP - incompatible configurations disconnect"); l2cu_disconnect_chnl (p_ccb); } else /* Return error to peer so he can renegotiate if possible */ { L2CAP_TRACE_EVENT0 ("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_WARNING1 ("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 (); btu_stop_timer (&p_ccb->timer_entry); /* 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 = GKI_get_os_tick_count(); #endif /* See if we can forward anything on the hold queue */ if (p_ccb->xmit_hold_q.count) { l2c_link_check_send_pkts (p_ccb->p_lcb, NULL, NULL); } } } L2CAP_TRACE_API1 ("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 */ btu_stop_timer (&p_ccb->timer_entry); /* If failure was channel mode try to renegotiate */ if (l2c_fcr_renegotiate_chan(p_ccb, p_cfg) == FALSE) { L2CAP_TRACE_API2 ("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 */ btu_start_timer (&p_ccb->timer_entry, BTU_TTYPE_L2CAP_CHNL, L2CAP_CHNL_DISCONNECT_TOUT); p_ccb->chnl_state = CST_W4_L2CA_DISCONNECT_RSP; L2CAP_TRACE_API1 ("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); btu_start_timer (&p_ccb->timer_entry, BTU_TTYPE_L2CAP_CHNL, L2CAP_CHNL_CFG_TIMEOUT); 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_WARNING1 ("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 (); btu_stop_timer (&p_ccb->timer_entry); } 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 = GKI_get_os_tick_count(); #endif /* See if we can forward anything on the hold queue */ if ( (p_ccb->chnl_state == CST_OPEN) && (p_ccb->xmit_hold_q.count) ) { 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); btu_start_timer (&p_ccb->timer_entry, BTU_TTYPE_L2CAP_CHNL, L2CAP_CHNL_CFG_TIMEOUT); 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; btu_start_timer (&p_ccb->timer_entry, BTU_TTYPE_L2CAP_CHNL, L2CAP_CHNL_DISCONNECT_TOUT); break; case L2CEVT_L2CAP_DATA: /* Peer data packet rcvd */ L2CAP_TRACE_API1 ("L2CAP - Calling DataInd_Cb(), CID: 0x%04x", p_ccb->local_cid); #if (L2CAP_NUM_FIXED_CHNLS > 0) 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->p_lcb->remote_bd_addr,(BT_HDR *)p_data); else GKI_freebuf (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 GKI_freebuf (p_data); break; case L2CEVT_TIMEOUT: l2cu_send_peer_disc_req (p_ccb); L2CAP_TRACE_API1 ("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; #if (BT_TRACE_VERBOSE == TRUE) L2CAP_TRACE_EVENT2 ("L2CAP - LCID: 0x%04x st: OPEN evt: %s", p_ccb->local_cid, l2c_csm_get_event_name (event)); #else L2CAP_TRACE_EVENT1 ("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_API1 ("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; btu_start_timer (&p_ccb->timer_entry, BTU_TTYPE_L2CAP_CHNL, L2CAP_CHNL_CFG_TIMEOUT); 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) { btu_stop_timer(&p_ccb->timer_entry); 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 */ // btla-specific ++ /* Make sure we are not in sniff mode */ #if BTM_PWR_MGR_INCLUDED == TRUE { tBTM_PM_PWR_MD settings; settings.mode = BTM_PM_MD_ACTIVE; BTM_SetPowerMode (BTM_PM_SET_ONLY_ID, p_ccb->p_lcb->remote_bd_addr, &settings); } #else BTM_CancelSniffMode (p_ccb->p_lcb->remote_bd_addr); #endif // btla-specific -- p_ccb->chnl_state = CST_W4_L2CA_DISCONNECT_RSP; btu_start_timer (&p_ccb->timer_entry, BTU_TTYPE_L2CAP_CHNL, L2CAP_CHNL_DISCONNECT_TOUT); L2CAP_TRACE_API1 ("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 */ (*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 */ /* Make sure we are not in sniff mode */ #if BTM_PWR_MGR_INCLUDED == TRUE { tBTM_PM_PWR_MD settings; settings.mode = BTM_PM_MD_ACTIVE; BTM_SetPowerMode (BTM_PM_SET_ONLY_ID, p_ccb->p_lcb->remote_bd_addr, &settings); } #else BTM_CancelSniffMode (p_ccb->p_lcb->remote_bd_addr); #endif l2cu_send_peer_disc_req (p_ccb); p_ccb->chnl_state = CST_W4_L2CAP_DISCONNECT_RSP; btu_start_timer (&p_ccb->timer_entry, BTU_TTYPE_L2CAP_CHNL, L2CAP_CHNL_DISCONNECT_TOUT); 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); btu_start_timer (&p_ccb->timer_entry, BTU_TTYPE_L2CAP_CHNL, L2CAP_CHNL_CFG_TIMEOUT); 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; } } /******************************************************************************* ** ** 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_EVENT2 ("L2CAP - LCID: 0x%04x st: W4_L2CAP_DISC_RSP evt: %s", p_ccb->local_cid, l2c_csm_get_event_name (event)); #else L2CAP_TRACE_EVENT1 ("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_API1 ("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_API1 ("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_API1 ("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 */ GKI_freebuf (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_EVENT2 ("L2CAP - LCID: 0x%04x st: W4_L2CA_DISC_RSP evt: %s", p_ccb->local_cid, l2c_csm_get_event_name (event)); #else L2CAP_TRACE_EVENT1 ("L2CAP - st: W4_L2CA_DISC_RSP evt: %d", event); #endif switch (event) { case L2CEVT_LP_DISCONNECT_IND: /* Link was disconnected */ L2CAP_TRACE_API1 ("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_API1 ("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 */ GKI_freebuf (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"); 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); } GKI_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; }