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esp-idf/components/bt/bluedroid/stack/l2cap/l2c_csm.c
Tian Hao b80325604d component/bt: add bluedroid 1st version 
1. add bluedroid 1st version
2. alarm adapter
3. task semaphore lock
4. other bugs resolved
2016-09-26 21:37:39 +08:00

1329 lines
53 KiB
C
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Raw Blame History

/******************************************************************************
*
* 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 "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:
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 */
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 */
/* Cancel sniff mode if needed */
{
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);
}
/* 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_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 */
btu_stop_timer (&p_ccb->p_lcb->timer_entry);
/* Cancel sniff mode if needed */
{
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);
}
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 */
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_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 */
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_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 */
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_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 */
btu_start_timer (&p_ccb->timer_entry, BTU_TTYPE_L2CAP_CHNL, L2CAP_CHNL_CONNECT_TOUT);
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 */
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_API ("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_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;
p_ccb->chnl_state = CST_CONFIG;
btu_start_timer (&p_ccb->timer_entry, BTU_TTYPE_L2CAP_CHNL, L2CAP_CHNL_CFG_TIMEOUT);
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;
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_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;
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_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;
/* 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_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 */
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_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 ();
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 (!GKI_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 */
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_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 */
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_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);
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_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 ();
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) && (!GKI_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);
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_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
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_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;
#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;
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 */
{
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);
}
// 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_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 */
/* 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);
}
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_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 */
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_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 */
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;
}
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