You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
367 lines
12 KiB
367 lines
12 KiB
/******************************************************************************
|
|
*
|
|
* Copyright 2003-2012 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 AVCTP module interfaces to L2CAP
|
|
*
|
|
******************************************************************************/
|
|
|
|
#include "avct_api.h"
|
|
#include "avct_int.h"
|
|
#include "bt_target.h"
|
|
#include "bt_types.h"
|
|
#include "l2c_api.h"
|
|
#include "l2cdefs.h"
|
|
#include "osi/include/osi.h"
|
|
|
|
/* callback function declarations */
|
|
void avct_l2c_connect_ind_cback(const RawAddress& bd_addr, uint16_t lcid,
|
|
uint16_t psm, uint8_t id);
|
|
void avct_l2c_connect_cfm_cback(uint16_t lcid, uint16_t result);
|
|
void avct_l2c_config_cfm_cback(uint16_t lcid, uint16_t result,
|
|
tL2CAP_CFG_INFO* p_cfg);
|
|
void avct_l2c_config_ind_cback(uint16_t lcid, tL2CAP_CFG_INFO* p_cfg);
|
|
void avct_l2c_disconnect_ind_cback(uint16_t lcid, bool ack_needed);
|
|
void avct_l2c_congestion_ind_cback(uint16_t lcid, bool is_congested);
|
|
void avct_l2c_data_ind_cback(uint16_t lcid, BT_HDR* p_buf);
|
|
static void avct_on_l2cap_error(uint16_t lcid, uint16_t result);
|
|
|
|
/* L2CAP callback function structure */
|
|
const tL2CAP_APPL_INFO avct_l2c_appl = {
|
|
avct_l2c_connect_ind_cback, avct_l2c_connect_cfm_cback,
|
|
avct_l2c_config_ind_cback, avct_l2c_config_cfm_cback,
|
|
avct_l2c_disconnect_ind_cback, avct_l2c_data_ind_cback,
|
|
avct_l2c_congestion_ind_cback, NULL,
|
|
avct_on_l2cap_error, NULL,
|
|
NULL, NULL,
|
|
};
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function avct_l2c_is_passive
|
|
*
|
|
* Description check is the CCB associated with the given LCB was created
|
|
* as passive
|
|
*
|
|
* Returns true, if the given LCB is created as AVCT_PASSIVE
|
|
*
|
|
******************************************************************************/
|
|
static bool avct_l2c_is_passive(tAVCT_LCB* p_lcb) {
|
|
bool is_passive = false;
|
|
tAVCT_CCB* p_ccb = &avct_cb.ccb[0];
|
|
int i;
|
|
|
|
for (i = 0; i < AVCT_NUM_CONN; i++, p_ccb++) {
|
|
if (p_ccb->allocated && (p_ccb->p_lcb == p_lcb)) {
|
|
AVCT_TRACE_DEBUG("avct_l2c_is_ct control:x%x", p_ccb->cc.control);
|
|
if (p_ccb->cc.control & AVCT_PASSIVE) {
|
|
is_passive = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return is_passive;
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function avct_l2c_connect_ind_cback
|
|
*
|
|
* Description This is the L2CAP connect indication callback function.
|
|
*
|
|
*
|
|
* Returns void
|
|
*
|
|
******************************************************************************/
|
|
void avct_l2c_connect_ind_cback(const RawAddress& bd_addr, uint16_t lcid,
|
|
UNUSED_ATTR uint16_t psm, uint8_t id) {
|
|
tAVCT_LCB* p_lcb;
|
|
uint16_t result = L2CAP_CONN_OK;
|
|
|
|
/* do we already have a channel for this peer? */
|
|
p_lcb = avct_lcb_by_bd(bd_addr);
|
|
if (p_lcb == NULL) {
|
|
/* no, allocate lcb */
|
|
p_lcb = avct_lcb_alloc(bd_addr);
|
|
if (p_lcb == NULL) {
|
|
/* no ccb available, reject L2CAP connection */
|
|
result = L2CAP_CONN_NO_RESOURCES;
|
|
}
|
|
}
|
|
/* else we already have a channel for this peer */
|
|
else {
|
|
if (!avct_l2c_is_passive(p_lcb) || (p_lcb->ch_state == AVCT_CH_OPEN)) {
|
|
/* this LCB included CT role - reject */
|
|
result = L2CAP_CONN_NO_RESOURCES;
|
|
} else {
|
|
/* TG role only - accept the connection from CT. move the channel ID to
|
|
* the conflict list */
|
|
p_lcb->conflict_lcid = p_lcb->ch_lcid;
|
|
AVCT_TRACE_DEBUG("avct_l2c_connect_ind_cback conflict_lcid:0x%x",
|
|
p_lcb->conflict_lcid);
|
|
}
|
|
}
|
|
|
|
if (p_lcb) {
|
|
AVCT_TRACE_DEBUG("avct_l2c_connect_ind_cback: 0x%x, res: %d, ch_state: %d",
|
|
lcid, result, p_lcb->ch_state);
|
|
}
|
|
|
|
/* If we reject the connection, send DisconnectReq */
|
|
if (result != L2CAP_CONN_OK) {
|
|
L2CA_DisconnectReq(lcid);
|
|
}
|
|
|
|
/* if result ok, proceed with connection */
|
|
if (result == L2CAP_CONN_OK) {
|
|
/* store LCID */
|
|
p_lcb->ch_lcid = lcid;
|
|
|
|
/* transition to configuration state */
|
|
p_lcb->ch_state = AVCT_CH_CFG;
|
|
}
|
|
|
|
if (p_lcb) AVCT_TRACE_DEBUG("ch_state cni: %d ", p_lcb->ch_state);
|
|
}
|
|
|
|
static void avct_on_l2cap_error(uint16_t lcid, uint16_t result) {
|
|
tAVCT_LCB* p_lcb = avct_lcb_by_lcid(lcid);
|
|
if (p_lcb == nullptr) return;
|
|
if (p_lcb->ch_state == AVCT_CH_CONN) {
|
|
AVCT_TRACE_DEBUG("avct_l2c_connect_cfm_cback conflict_lcid:0x%x",
|
|
p_lcb->conflict_lcid);
|
|
if (p_lcb->conflict_lcid == lcid) {
|
|
p_lcb->conflict_lcid = 0;
|
|
} else {
|
|
tAVCT_LCB_EVT avct_lcb_evt;
|
|
avct_lcb_evt.result = result;
|
|
avct_lcb_event(p_lcb, AVCT_LCB_LL_CLOSE_EVT, &avct_lcb_evt);
|
|
}
|
|
} else if (p_lcb->ch_state == AVCT_CH_CFG) {
|
|
AVCT_TRACE_DEBUG("ERROR avct_l2c_config_cfm_cback L2CA_DisconnectReq %d ",
|
|
p_lcb->ch_state);
|
|
/* store result value */
|
|
p_lcb->ch_result = result;
|
|
|
|
/* Send L2CAP disconnect req */
|
|
L2CA_DisconnectReq(lcid);
|
|
}
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function avct_l2c_connect_cfm_cback
|
|
*
|
|
* Description This is the L2CAP connect confirm callback function.
|
|
*
|
|
*
|
|
* Returns void
|
|
*
|
|
******************************************************************************/
|
|
void avct_l2c_connect_cfm_cback(uint16_t lcid, uint16_t result) {
|
|
tAVCT_LCB* p_lcb;
|
|
|
|
/* look up lcb for this channel */
|
|
p_lcb = avct_lcb_by_lcid(lcid);
|
|
if (p_lcb != NULL) {
|
|
AVCT_TRACE_DEBUG(
|
|
"avct_l2c_connect_cfm_cback lcid:0x%x result: %d ch_state: %d, "
|
|
"conflict_lcid:0x%x",
|
|
lcid, result, p_lcb->ch_state, p_lcb->conflict_lcid);
|
|
/* if in correct state */
|
|
if (p_lcb->ch_state == AVCT_CH_CONN) {
|
|
/* if result successful */
|
|
if (result == L2CAP_CONN_OK) {
|
|
/* set channel state */
|
|
p_lcb->ch_state = AVCT_CH_CFG;
|
|
}
|
|
/* else failure */
|
|
else {
|
|
LOG(ERROR) << __func__ << ": invoked with non OK status";
|
|
}
|
|
} else if (p_lcb->conflict_lcid == lcid) {
|
|
/* we must be in AVCT_CH_CFG state for the ch_lcid channel */
|
|
AVCT_TRACE_DEBUG(
|
|
"avct_l2c_connect_cfm_cback ch_state: %d, conflict_lcid:0x%x",
|
|
p_lcb->ch_state, p_lcb->conflict_lcid);
|
|
if (result == L2CAP_CONN_OK) {
|
|
/* just in case the peer also accepts our connection - Send L2CAP
|
|
* disconnect req */
|
|
L2CA_DisconnectReq(lcid);
|
|
}
|
|
p_lcb->conflict_lcid = 0;
|
|
}
|
|
AVCT_TRACE_DEBUG("ch_state cnc: %d ", p_lcb->ch_state);
|
|
}
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function avct_l2c_config_cfm_cback
|
|
*
|
|
* Description This is the L2CAP config confirm callback function.
|
|
*
|
|
*
|
|
* Returns void
|
|
*
|
|
******************************************************************************/
|
|
void avct_l2c_config_cfm_cback(uint16_t lcid, uint16_t initiator,
|
|
tL2CAP_CFG_INFO* p_cfg) {
|
|
avct_l2c_config_ind_cback(lcid, p_cfg);
|
|
|
|
tAVCT_LCB* p_lcb;
|
|
|
|
/* look up lcb for this channel */
|
|
p_lcb = avct_lcb_by_lcid(lcid);
|
|
if (p_lcb != NULL) {
|
|
AVCT_TRACE_DEBUG("avct_l2c_config_cfm_cback: 0x%x, ch_state: %d,", lcid,
|
|
p_lcb->ch_state);
|
|
/* if in correct state */
|
|
if (p_lcb->ch_state == AVCT_CH_CFG) {
|
|
p_lcb->ch_state = AVCT_CH_OPEN;
|
|
avct_lcb_event(p_lcb, AVCT_LCB_LL_OPEN_EVT, NULL);
|
|
}
|
|
AVCT_TRACE_DEBUG("ch_state cfc: %d ", p_lcb->ch_state);
|
|
}
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function avct_l2c_config_ind_cback
|
|
*
|
|
* Description This is the L2CAP config indication callback function.
|
|
*
|
|
*
|
|
* Returns void
|
|
*
|
|
******************************************************************************/
|
|
void avct_l2c_config_ind_cback(uint16_t lcid, tL2CAP_CFG_INFO* p_cfg) {
|
|
tAVCT_LCB* p_lcb;
|
|
|
|
/* look up lcb for this channel */
|
|
p_lcb = avct_lcb_by_lcid(lcid);
|
|
if (p_lcb != NULL) {
|
|
AVCT_TRACE_DEBUG("avct_l2c_config_ind_cback: 0x%x, ch_state: %d", lcid,
|
|
p_lcb->ch_state);
|
|
/* store the mtu in tbl */
|
|
if (p_cfg->mtu_present) {
|
|
p_lcb->peer_mtu = p_cfg->mtu;
|
|
} else {
|
|
p_lcb->peer_mtu = L2CAP_DEFAULT_MTU;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function avct_l2c_disconnect_ind_cback
|
|
*
|
|
* Description This is the L2CAP disconnect indication callback function.
|
|
*
|
|
*
|
|
* Returns void
|
|
*
|
|
******************************************************************************/
|
|
void avct_l2c_disconnect_ind_cback(uint16_t lcid, bool ack_needed) {
|
|
tAVCT_LCB* p_lcb;
|
|
uint16_t result = AVCT_RESULT_FAIL;
|
|
|
|
/* look up lcb for this channel */
|
|
p_lcb = avct_lcb_by_lcid(lcid);
|
|
if (p_lcb != NULL) {
|
|
AVCT_TRACE_DEBUG("avct_l2c_disconnect_ind_cback: 0x%x, ch_state: %d", lcid,
|
|
p_lcb->ch_state);
|
|
tAVCT_LCB_EVT avct_lcb_evt;
|
|
avct_lcb_evt.result = result;
|
|
avct_lcb_event(p_lcb, AVCT_LCB_LL_CLOSE_EVT, &avct_lcb_evt);
|
|
AVCT_TRACE_DEBUG("ch_state di: %d ", p_lcb->ch_state);
|
|
}
|
|
}
|
|
|
|
void avct_l2c_disconnect(uint16_t lcid, uint16_t result) {
|
|
L2CA_DisconnectReq(lcid);
|
|
|
|
tAVCT_LCB* p_lcb;
|
|
uint16_t res;
|
|
|
|
/* look up lcb for this channel */
|
|
p_lcb = avct_lcb_by_lcid(lcid);
|
|
if (p_lcb != NULL) {
|
|
AVCT_TRACE_DEBUG(
|
|
"avct_l2c_disconnect_cfm_cback: 0x%x, ch_state: %d, res: %d", lcid,
|
|
p_lcb->ch_state, result);
|
|
/* result value may be previously stored */
|
|
res = (p_lcb->ch_result != 0) ? p_lcb->ch_result : result;
|
|
p_lcb->ch_result = 0;
|
|
|
|
tAVCT_LCB_EVT avct_lcb_evt;
|
|
avct_lcb_evt.result = res;
|
|
avct_lcb_event(p_lcb, AVCT_LCB_LL_CLOSE_EVT, &avct_lcb_evt);
|
|
AVCT_TRACE_DEBUG("ch_state dc: %d ", p_lcb->ch_state);
|
|
}
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function avct_l2c_congestion_ind_cback
|
|
*
|
|
* Description This is the L2CAP congestion indication callback function.
|
|
*
|
|
*
|
|
* Returns void
|
|
*
|
|
******************************************************************************/
|
|
void avct_l2c_congestion_ind_cback(uint16_t lcid, bool is_congested) {
|
|
tAVCT_LCB* p_lcb;
|
|
|
|
AVCT_TRACE_DEBUG("avct_l2c_congestion_ind_cback: 0x%x", lcid);
|
|
/* look up lcb for this channel */
|
|
p_lcb = avct_lcb_by_lcid(lcid);
|
|
if (p_lcb != NULL) {
|
|
tAVCT_LCB_EVT avct_lcb_evt;
|
|
avct_lcb_evt.cong = is_congested;
|
|
avct_lcb_event(p_lcb, AVCT_LCB_LL_CONG_EVT, &avct_lcb_evt);
|
|
}
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function avct_l2c_data_ind_cback
|
|
*
|
|
* Description This is the L2CAP data indication callback function.
|
|
*
|
|
*
|
|
* Returns void
|
|
*
|
|
******************************************************************************/
|
|
void avct_l2c_data_ind_cback(uint16_t lcid, BT_HDR* p_buf) {
|
|
tAVCT_LCB* p_lcb;
|
|
|
|
AVCT_TRACE_DEBUG("avct_l2c_data_ind_cback: 0x%x", lcid);
|
|
/* look up lcb for this channel */
|
|
p_lcb = avct_lcb_by_lcid(lcid);
|
|
if (p_lcb != NULL) {
|
|
avct_lcb_event(p_lcb, AVCT_LCB_LL_MSG_EVT, (tAVCT_LCB_EVT*)&p_buf);
|
|
} else /* prevent buffer leak */
|
|
{
|
|
AVCT_TRACE_WARNING("ERROR -> avct_l2c_data_ind_cback drop buffer");
|
|
osi_free(p_buf);
|
|
}
|
|
}
|