650 lines
21 KiB
C++
650 lines
21 KiB
C++
/******************************************************************************
|
|
*
|
|
* 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 module contains action functions of the link control state machine.
|
|
*
|
|
******************************************************************************/
|
|
|
|
#include <string.h>
|
|
|
|
#include "avct_api.h"
|
|
#include "avct_int.h"
|
|
#include "bt_target.h"
|
|
#include "bt_utils.h"
|
|
#include "bta/include/bta_api.h"
|
|
#include "btm_api.h"
|
|
#include "osi/include/allocator.h"
|
|
#include "osi/include/log.h"
|
|
#include "osi/include/osi.h"
|
|
#include "stack/btm/btm_sec.h"
|
|
#include "stack/include/bt_hdr.h"
|
|
|
|
/* packet header length lookup table */
|
|
const uint8_t avct_lcb_pkt_type_len[] = {AVCT_HDR_LEN_SINGLE,
|
|
AVCT_HDR_LEN_START, AVCT_HDR_LEN_CONT,
|
|
AVCT_HDR_LEN_END};
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function avct_lcb_msg_asmbl
|
|
*
|
|
* Description Reassemble incoming message.
|
|
*
|
|
*
|
|
* Returns Pointer to reassembled message; NULL if no message
|
|
* available.
|
|
*
|
|
******************************************************************************/
|
|
static BT_HDR* avct_lcb_msg_asmbl(tAVCT_LCB* p_lcb, BT_HDR* p_buf) {
|
|
uint8_t* p;
|
|
uint8_t pkt_type;
|
|
BT_HDR* p_ret;
|
|
|
|
if (p_buf->len < 1) {
|
|
osi_free(p_buf);
|
|
p_ret = NULL;
|
|
return p_ret;
|
|
}
|
|
|
|
/* parse the message header */
|
|
p = (uint8_t*)(p_buf + 1) + p_buf->offset;
|
|
pkt_type = AVCT_PKT_TYPE(p);
|
|
|
|
/* quick sanity check on length */
|
|
if (p_buf->len < avct_lcb_pkt_type_len[pkt_type] ||
|
|
(sizeof(BT_HDR) + p_buf->offset + p_buf->len) > BT_DEFAULT_BUFFER_SIZE) {
|
|
osi_free(p_buf);
|
|
AVCT_TRACE_WARNING("Bad length during reassembly");
|
|
p_ret = NULL;
|
|
}
|
|
/* single packet */
|
|
else if (pkt_type == AVCT_PKT_TYPE_SINGLE) {
|
|
/* if reassembly in progress drop message and process new single */
|
|
if (p_lcb->p_rx_msg != NULL)
|
|
AVCT_TRACE_WARNING("Got single during reassembly");
|
|
|
|
osi_free_and_reset((void**)&p_lcb->p_rx_msg);
|
|
|
|
p_ret = p_buf;
|
|
}
|
|
/* start packet */
|
|
else if (pkt_type == AVCT_PKT_TYPE_START) {
|
|
/* if reassembly in progress drop message and process new start */
|
|
if (p_lcb->p_rx_msg != NULL)
|
|
AVCT_TRACE_WARNING("Got start during reassembly");
|
|
|
|
osi_free_and_reset((void**)&p_lcb->p_rx_msg);
|
|
|
|
/*
|
|
* Allocate bigger buffer for reassembly. As lower layers are
|
|
* not aware of possible packet size after reassembly, they
|
|
* would have allocated smaller buffer.
|
|
*/
|
|
if (sizeof(BT_HDR) + p_buf->offset + p_buf->len > BT_DEFAULT_BUFFER_SIZE) {
|
|
osi_free(p_buf);
|
|
p_ret = NULL;
|
|
return p_ret;
|
|
}
|
|
p_lcb->p_rx_msg = (BT_HDR*)osi_malloc(BT_DEFAULT_BUFFER_SIZE);
|
|
memcpy(p_lcb->p_rx_msg, p_buf, sizeof(BT_HDR) + p_buf->offset + p_buf->len);
|
|
|
|
/* Free original buffer */
|
|
osi_free(p_buf);
|
|
|
|
/* update p to point to new buffer */
|
|
p = (uint8_t*)(p_lcb->p_rx_msg + 1) + p_lcb->p_rx_msg->offset;
|
|
|
|
/* copy first header byte over nosp */
|
|
*(p + 1) = *p;
|
|
|
|
/* set offset to point to where to copy next */
|
|
p_lcb->p_rx_msg->offset += p_lcb->p_rx_msg->len;
|
|
|
|
/* adjust length for packet header */
|
|
p_lcb->p_rx_msg->len -= 1;
|
|
|
|
p_ret = NULL;
|
|
}
|
|
/* continue or end */
|
|
else {
|
|
/* if no reassembly in progress drop message */
|
|
if (p_lcb->p_rx_msg == NULL) {
|
|
osi_free(p_buf);
|
|
AVCT_TRACE_WARNING("Pkt type=%d out of order", pkt_type);
|
|
p_ret = NULL;
|
|
} else {
|
|
/* get size of buffer holding assembled message */
|
|
/*
|
|
* NOTE: The buffer is allocated above at the beginning of the
|
|
* reassembly, and is always of size BT_DEFAULT_BUFFER_SIZE.
|
|
*/
|
|
uint16_t buf_len = BT_DEFAULT_BUFFER_SIZE - sizeof(BT_HDR);
|
|
|
|
/* adjust offset and len of fragment for header byte */
|
|
p_buf->offset += AVCT_HDR_LEN_CONT;
|
|
p_buf->len -= AVCT_HDR_LEN_CONT;
|
|
|
|
/* verify length */
|
|
if ((p_lcb->p_rx_msg->offset + p_buf->len) > buf_len) {
|
|
/* won't fit; free everything */
|
|
AVCT_TRACE_WARNING("%s: Fragmented message too big!", __func__);
|
|
osi_free_and_reset((void**)&p_lcb->p_rx_msg);
|
|
osi_free(p_buf);
|
|
p_ret = NULL;
|
|
} else {
|
|
/* copy contents of p_buf to p_rx_msg */
|
|
memcpy((uint8_t*)(p_lcb->p_rx_msg + 1) + p_lcb->p_rx_msg->offset,
|
|
(uint8_t*)(p_buf + 1) + p_buf->offset, p_buf->len);
|
|
|
|
if (pkt_type == AVCT_PKT_TYPE_END) {
|
|
p_lcb->p_rx_msg->offset -= p_lcb->p_rx_msg->len;
|
|
p_lcb->p_rx_msg->len += p_buf->len;
|
|
p_ret = p_lcb->p_rx_msg;
|
|
p_lcb->p_rx_msg = NULL;
|
|
} else {
|
|
p_lcb->p_rx_msg->offset += p_buf->len;
|
|
p_lcb->p_rx_msg->len += p_buf->len;
|
|
p_ret = NULL;
|
|
}
|
|
osi_free(p_buf);
|
|
}
|
|
}
|
|
}
|
|
return p_ret;
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function avct_lcb_chnl_open
|
|
*
|
|
* Description Open L2CAP channel to peer
|
|
*
|
|
*
|
|
* Returns Nothing.
|
|
*
|
|
******************************************************************************/
|
|
void avct_lcb_chnl_open(tAVCT_LCB* p_lcb, UNUSED_ATTR tAVCT_LCB_EVT* p_data) {
|
|
uint16_t result = AVCT_RESULT_FAIL;
|
|
|
|
p_lcb->ch_state = AVCT_CH_CONN;
|
|
p_lcb->ch_lcid =
|
|
L2CA_ConnectReq2(AVCT_PSM, p_lcb->peer_addr, BTA_SEC_AUTHENTICATE);
|
|
if (p_lcb->ch_lcid == 0) {
|
|
/* if connect req failed, send ourselves close event */
|
|
tAVCT_LCB_EVT avct_lcb_evt;
|
|
avct_lcb_evt.result = result;
|
|
avct_lcb_event(p_lcb, AVCT_LCB_LL_CLOSE_EVT, &avct_lcb_evt);
|
|
}
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function avct_lcb_unbind_disc
|
|
*
|
|
* Description Deallocate ccb and call callback with disconnect event.
|
|
*
|
|
*
|
|
* Returns Nothing.
|
|
*
|
|
******************************************************************************/
|
|
void avct_lcb_unbind_disc(UNUSED_ATTR tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data) {
|
|
avct_ccb_dealloc(p_data->p_ccb, AVCT_DISCONNECT_CFM_EVT, 0, NULL);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function avct_lcb_open_ind
|
|
*
|
|
* Description Handle an LL_OPEN event. For each allocated ccb already
|
|
* bound to this lcb, send a connect event. For each
|
|
* unbound ccb with a new PID, bind that ccb to this lcb and
|
|
* send a connect event.
|
|
*
|
|
*
|
|
* Returns Nothing.
|
|
*
|
|
******************************************************************************/
|
|
void avct_lcb_open_ind(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data) {
|
|
tAVCT_CCB* p_ccb = &avct_cb.ccb[0];
|
|
int i;
|
|
bool bind = false;
|
|
|
|
for (i = 0; i < AVCT_NUM_CONN; i++, p_ccb++) {
|
|
/* if ccb allocated and */
|
|
if (p_ccb->allocated) {
|
|
/* if bound to this lcb send connect confirm event */
|
|
if (p_ccb->p_lcb == p_lcb) {
|
|
bind = true;
|
|
L2CA_SetTxPriority(p_lcb->ch_lcid, L2CAP_CHNL_PRIORITY_HIGH);
|
|
p_ccb->cc.p_ctrl_cback(avct_ccb_to_idx(p_ccb), AVCT_CONNECT_CFM_EVT, 0,
|
|
&p_lcb->peer_addr);
|
|
}
|
|
/* if unbound acceptor and lcb doesn't already have a ccb for this PID */
|
|
else if ((p_ccb->p_lcb == NULL) && (p_ccb->cc.role == AVCT_ACP) &&
|
|
(avct_lcb_has_pid(p_lcb, p_ccb->cc.pid) == NULL)) {
|
|
/* bind ccb to lcb and send connect ind event */
|
|
bind = true;
|
|
p_ccb->p_lcb = p_lcb;
|
|
L2CA_SetTxPriority(p_lcb->ch_lcid, L2CAP_CHNL_PRIORITY_HIGH);
|
|
p_ccb->cc.p_ctrl_cback(avct_ccb_to_idx(p_ccb), AVCT_CONNECT_IND_EVT, 0,
|
|
&p_lcb->peer_addr);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* if no ccbs bound to this lcb, disconnect */
|
|
if (!bind) {
|
|
avct_lcb_event(p_lcb, AVCT_LCB_INT_CLOSE_EVT, p_data);
|
|
}
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function avct_lcb_open_fail
|
|
*
|
|
* Description L2CAP channel open attempt failed. Deallocate any ccbs
|
|
* on this lcb and send connect confirm event with failure.
|
|
*
|
|
*
|
|
* Returns Nothing.
|
|
*
|
|
******************************************************************************/
|
|
void avct_lcb_open_fail(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data) {
|
|
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_ccb_dealloc(p_ccb, AVCT_CONNECT_CFM_EVT, p_data->result,
|
|
&p_lcb->peer_addr);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function avct_lcb_close_ind
|
|
*
|
|
* Description L2CAP channel closed by peer. Deallocate any initiator
|
|
* ccbs on this lcb and send disconnect ind event.
|
|
*
|
|
*
|
|
* Returns Nothing.
|
|
*
|
|
******************************************************************************/
|
|
void avct_lcb_close_ind(tAVCT_LCB* p_lcb, UNUSED_ATTR tAVCT_LCB_EVT* p_data) {
|
|
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)) {
|
|
if (p_ccb->cc.role == AVCT_INT) {
|
|
avct_ccb_dealloc(p_ccb, AVCT_DISCONNECT_IND_EVT, 0, &p_lcb->peer_addr);
|
|
} else {
|
|
p_ccb->p_lcb = NULL;
|
|
(*p_ccb->cc.p_ctrl_cback)(avct_ccb_to_idx(p_ccb),
|
|
AVCT_DISCONNECT_IND_EVT, 0,
|
|
&p_lcb->peer_addr);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function avct_lcb_close_cfm
|
|
*
|
|
* Description L2CAP channel closed by us. Deallocate any initiator
|
|
* ccbs on this lcb and send disconnect ind or cfm event.
|
|
*
|
|
*
|
|
* Returns Nothing.
|
|
*
|
|
******************************************************************************/
|
|
void avct_lcb_close_cfm(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data) {
|
|
tAVCT_CCB* p_ccb = &avct_cb.ccb[0];
|
|
int i;
|
|
uint8_t event;
|
|
|
|
for (i = 0; i < AVCT_NUM_CONN; i++, p_ccb++) {
|
|
if (p_ccb->allocated && (p_ccb->p_lcb == p_lcb)) {
|
|
/* if this ccb initiated close send disconnect cfm otherwise ind */
|
|
if (p_ccb->ch_close) {
|
|
p_ccb->ch_close = false;
|
|
event = AVCT_DISCONNECT_CFM_EVT;
|
|
} else {
|
|
event = AVCT_DISCONNECT_IND_EVT;
|
|
}
|
|
|
|
if (p_ccb->cc.role == AVCT_INT) {
|
|
avct_ccb_dealloc(p_ccb, event, p_data->result, &p_lcb->peer_addr);
|
|
} else {
|
|
p_ccb->p_lcb = NULL;
|
|
(*p_ccb->cc.p_ctrl_cback)(avct_ccb_to_idx(p_ccb), event, p_data->result,
|
|
&p_lcb->peer_addr);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function avct_lcb_bind_conn
|
|
*
|
|
* Description Bind ccb to lcb and send connect cfm event.
|
|
*
|
|
*
|
|
* Returns Nothing.
|
|
*
|
|
******************************************************************************/
|
|
void avct_lcb_bind_conn(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data) {
|
|
p_data->p_ccb->p_lcb = p_lcb;
|
|
(*p_data->p_ccb->cc.p_ctrl_cback)(avct_ccb_to_idx(p_data->p_ccb),
|
|
AVCT_CONNECT_CFM_EVT, 0, &p_lcb->peer_addr);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function avct_lcb_chk_disc
|
|
*
|
|
* Description A ccb wants to close; if it is the last ccb on this lcb,
|
|
* close channel. Otherwise just deallocate and call
|
|
* callback.
|
|
*
|
|
* Returns Nothing.
|
|
*
|
|
******************************************************************************/
|
|
void avct_lcb_chk_disc(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data) {
|
|
avct_close_bcb(p_lcb, p_data);
|
|
if (avct_lcb_last_ccb(p_lcb, p_data->p_ccb)) {
|
|
LOG_INFO("Closing last avct channel to device");
|
|
p_data->p_ccb->ch_close = true;
|
|
avct_lcb_event(p_lcb, AVCT_LCB_INT_CLOSE_EVT, p_data);
|
|
} else {
|
|
LOG_INFO("Closing avct channel with active remaining channels");
|
|
avct_lcb_unbind_disc(p_lcb, p_data);
|
|
}
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function avct_lcb_chnl_disc
|
|
*
|
|
* Description Disconnect L2CAP channel.
|
|
*
|
|
*
|
|
* Returns Nothing.
|
|
*
|
|
******************************************************************************/
|
|
void avct_lcb_chnl_disc(tAVCT_LCB* p_lcb, UNUSED_ATTR tAVCT_LCB_EVT* p_data) {
|
|
avct_l2c_disconnect(p_lcb->ch_lcid, 0);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function avct_lcb_bind_fail
|
|
*
|
|
* Description Deallocate ccb and call callback with connect event
|
|
* with failure result.
|
|
*
|
|
*
|
|
* Returns Nothing.
|
|
*
|
|
******************************************************************************/
|
|
void avct_lcb_bind_fail(UNUSED_ATTR tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data) {
|
|
avct_ccb_dealloc(p_data->p_ccb, AVCT_CONNECT_CFM_EVT, AVCT_RESULT_FAIL, NULL);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function avct_lcb_cong_ind
|
|
*
|
|
* Description Handle congestion indication from L2CAP.
|
|
*
|
|
*
|
|
* Returns Nothing.
|
|
*
|
|
******************************************************************************/
|
|
void avct_lcb_cong_ind(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data) {
|
|
tAVCT_CCB* p_ccb = &avct_cb.ccb[0];
|
|
int i;
|
|
uint8_t event;
|
|
BT_HDR* p_buf;
|
|
|
|
/* set event */
|
|
event = (p_data->cong) ? AVCT_CONG_IND_EVT : AVCT_UNCONG_IND_EVT;
|
|
p_lcb->cong = p_data->cong;
|
|
if (!p_lcb->cong && !fixed_queue_is_empty(p_lcb->tx_q)) {
|
|
while (!p_lcb->cong &&
|
|
(p_buf = (BT_HDR*)fixed_queue_try_dequeue(p_lcb->tx_q)) != NULL) {
|
|
if (L2CA_DataWrite(p_lcb->ch_lcid, p_buf) == L2CAP_DW_CONGESTED) {
|
|
p_lcb->cong = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* send event to all ccbs on this lcb */
|
|
for (i = 0; i < AVCT_NUM_CONN; i++, p_ccb++) {
|
|
if (p_ccb->allocated && (p_ccb->p_lcb == p_lcb)) {
|
|
(*p_ccb->cc.p_ctrl_cback)(avct_ccb_to_idx(p_ccb), event, 0,
|
|
&p_lcb->peer_addr);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function avct_lcb_discard_msg
|
|
*
|
|
* Description Discard a message sent in from the API.
|
|
*
|
|
*
|
|
* Returns Nothing.
|
|
*
|
|
******************************************************************************/
|
|
void avct_lcb_discard_msg(UNUSED_ATTR tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data) {
|
|
AVCT_TRACE_WARNING("%s Dropping message", __func__);
|
|
osi_free_and_reset((void**)&p_data->ul_msg.p_buf);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function avct_lcb_send_msg
|
|
*
|
|
* Description Build and send an AVCTP message.
|
|
*
|
|
*
|
|
* Returns Nothing.
|
|
*
|
|
******************************************************************************/
|
|
void avct_lcb_send_msg(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data) {
|
|
uint16_t curr_msg_len;
|
|
uint8_t pkt_type;
|
|
uint8_t hdr_len;
|
|
uint8_t* p;
|
|
uint8_t nosp = 0; /* number of subsequent packets */
|
|
uint16_t temp;
|
|
uint16_t buf_size = p_lcb->peer_mtu + L2CAP_MIN_OFFSET + BT_HDR_SIZE;
|
|
|
|
/* store msg len */
|
|
curr_msg_len = p_data->ul_msg.p_buf->len;
|
|
|
|
/* initialize packet type and other stuff */
|
|
if (curr_msg_len <= (p_lcb->peer_mtu - AVCT_HDR_LEN_SINGLE)) {
|
|
pkt_type = AVCT_PKT_TYPE_SINGLE;
|
|
} else {
|
|
pkt_type = AVCT_PKT_TYPE_START;
|
|
temp = (curr_msg_len + AVCT_HDR_LEN_START - p_lcb->peer_mtu);
|
|
nosp = temp / (p_lcb->peer_mtu - 1) + 1;
|
|
if ((temp % (p_lcb->peer_mtu - 1)) != 0) nosp++;
|
|
}
|
|
|
|
/* while we haven't sent all packets */
|
|
while (curr_msg_len != 0) {
|
|
BT_HDR* p_buf;
|
|
|
|
/* set header len */
|
|
hdr_len = avct_lcb_pkt_type_len[pkt_type];
|
|
|
|
/* if remaining msg must be fragmented */
|
|
if (p_data->ul_msg.p_buf->len > (p_lcb->peer_mtu - hdr_len)) {
|
|
/* get a new buffer for fragment we are sending */
|
|
p_buf = (BT_HDR*)osi_malloc(buf_size);
|
|
|
|
/* copy portion of data from current message to new buffer */
|
|
p_buf->offset = L2CAP_MIN_OFFSET + hdr_len;
|
|
p_buf->len = p_lcb->peer_mtu - hdr_len;
|
|
|
|
memcpy(
|
|
(uint8_t*)(p_buf + 1) + p_buf->offset,
|
|
(uint8_t*)(p_data->ul_msg.p_buf + 1) + p_data->ul_msg.p_buf->offset,
|
|
p_buf->len);
|
|
|
|
p_data->ul_msg.p_buf->offset += p_buf->len;
|
|
p_data->ul_msg.p_buf->len -= p_buf->len;
|
|
} else {
|
|
p_buf = p_data->ul_msg.p_buf;
|
|
}
|
|
|
|
curr_msg_len -= p_buf->len;
|
|
|
|
/* set up to build header */
|
|
p_buf->len += hdr_len;
|
|
p_buf->offset -= hdr_len;
|
|
p = (uint8_t*)(p_buf + 1) + p_buf->offset;
|
|
|
|
/* build header */
|
|
AVCT_BUILD_HDR(p, p_data->ul_msg.label, pkt_type, p_data->ul_msg.cr);
|
|
if (pkt_type == AVCT_PKT_TYPE_START) {
|
|
UINT8_TO_STREAM(p, nosp);
|
|
}
|
|
if ((pkt_type == AVCT_PKT_TYPE_START) ||
|
|
(pkt_type == AVCT_PKT_TYPE_SINGLE)) {
|
|
UINT16_TO_BE_STREAM(p, p_data->ul_msg.p_ccb->cc.pid);
|
|
}
|
|
|
|
if (p_lcb->cong) {
|
|
fixed_queue_enqueue(p_lcb->tx_q, p_buf);
|
|
}
|
|
|
|
/* send message to L2CAP */
|
|
else {
|
|
if (L2CA_DataWrite(p_lcb->ch_lcid, p_buf) == L2CAP_DW_CONGESTED) {
|
|
p_lcb->cong = true;
|
|
}
|
|
}
|
|
|
|
/* update pkt type for next packet */
|
|
if (curr_msg_len > (p_lcb->peer_mtu - AVCT_HDR_LEN_END)) {
|
|
pkt_type = AVCT_PKT_TYPE_CONT;
|
|
} else {
|
|
pkt_type = AVCT_PKT_TYPE_END;
|
|
}
|
|
}
|
|
AVCT_TRACE_DEBUG("%s tx_q_count:%d", __func__,
|
|
fixed_queue_length(p_lcb->tx_q));
|
|
return;
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function avct_lcb_free_msg_ind
|
|
*
|
|
* Description Discard an incoming AVCTP message.
|
|
*
|
|
*
|
|
* Returns Nothing.
|
|
*
|
|
******************************************************************************/
|
|
void avct_lcb_free_msg_ind(UNUSED_ATTR tAVCT_LCB* p_lcb,
|
|
tAVCT_LCB_EVT* p_data) {
|
|
if (p_data == NULL) return;
|
|
|
|
osi_free_and_reset((void**)&p_data->p_buf);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function avct_lcb_msg_ind
|
|
*
|
|
* Description Handle an incoming AVCTP message.
|
|
*
|
|
*
|
|
* Returns Nothing.
|
|
*
|
|
******************************************************************************/
|
|
void avct_lcb_msg_ind(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data) {
|
|
uint8_t* p;
|
|
uint8_t label, type, cr_ipid;
|
|
uint16_t pid;
|
|
tAVCT_CCB* p_ccb;
|
|
|
|
/* this p_buf is to be reported through p_msg_cback. The layer_specific
|
|
* needs to be set properly to indicate that it is received through
|
|
* control channel */
|
|
p_data->p_buf->layer_specific = AVCT_DATA_CTRL;
|
|
|
|
/* reassemble message; if no message available (we received a fragment) return
|
|
*/
|
|
p_data->p_buf = avct_lcb_msg_asmbl(p_lcb, p_data->p_buf);
|
|
if (p_data->p_buf == NULL) {
|
|
return;
|
|
}
|
|
|
|
p = (uint8_t*)(p_data->p_buf + 1) + p_data->p_buf->offset;
|
|
|
|
/* parse header byte */
|
|
AVCT_PARSE_HDR(p, label, type, cr_ipid);
|
|
|
|
/* check for invalid cr_ipid */
|
|
if (cr_ipid == AVCT_CR_IPID_INVALID) {
|
|
AVCT_TRACE_WARNING("Invalid cr_ipid", cr_ipid);
|
|
osi_free_and_reset((void**)&p_data->p_buf);
|
|
return;
|
|
}
|
|
|
|
/* parse and lookup PID */
|
|
BE_STREAM_TO_UINT16(pid, p);
|
|
p_ccb = avct_lcb_has_pid(p_lcb, pid);
|
|
if (p_ccb) {
|
|
/* PID found; send msg up, adjust bt hdr and call msg callback */
|
|
p_data->p_buf->offset += AVCT_HDR_LEN_SINGLE;
|
|
p_data->p_buf->len -= AVCT_HDR_LEN_SINGLE;
|
|
(*p_ccb->cc.p_msg_cback)(avct_ccb_to_idx(p_ccb), label, cr_ipid,
|
|
p_data->p_buf);
|
|
return;
|
|
}
|
|
|
|
/* PID not found; drop message */
|
|
AVCT_TRACE_WARNING("No ccb for PID=%x", pid);
|
|
osi_free_and_reset((void**)&p_data->p_buf);
|
|
|
|
/* if command send reject */
|
|
if (cr_ipid == AVCT_CMD) {
|
|
BT_HDR* p_buf = (BT_HDR*)osi_malloc(AVCT_CMD_BUF_SIZE);
|
|
p_buf->len = AVCT_HDR_LEN_SINGLE;
|
|
p_buf->offset = AVCT_MSG_OFFSET - AVCT_HDR_LEN_SINGLE;
|
|
p = (uint8_t*)(p_buf + 1) + p_buf->offset;
|
|
AVCT_BUILD_HDR(p, label, AVCT_PKT_TYPE_SINGLE, AVCT_REJ);
|
|
UINT16_TO_BE_STREAM(p, pid);
|
|
L2CA_DataWrite(p_lcb->ch_lcid, p_buf);
|
|
}
|
|
}
|