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esp-idf/components/bt/host/bluedroid/stack/hid/hidh_conn.c

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/******************************************************************************
*
* Copyright (C) 2002-2012 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 HID HOST internal definitions
*
******************************************************************************/
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include "common/bt_target.h"
#include "osi/allocator.h"
#include "stack/bt_types.h"
#include "stack/l2cdefs.h"
#include "stack/l2c_api.h"
#include "stack/btu.h"
#include "stack/btm_api.h"
#include "btm_int.h"
#include "stack/hiddefs.h"
#include "stack/hidh_api.h"
#include "hid_int.h"
#include "osi/osi.h"
#if (HID_HOST_INCLUDED == TRUE)
static UINT8 find_conn_by_cid (UINT16 cid);
static void hidh_conn_retry (UINT8 dhandle);
/********************************************************************************/
/* 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 hidh_l2cif_connect_ind (BD_ADDR bd_addr, UINT16 l2cap_cid,
UINT16 psm, UINT8 l2cap_id);
static void hidh_l2cif_connect_cfm (UINT16 l2cap_cid, UINT16 result);
static void hidh_l2cif_config_ind (UINT16 l2cap_cid, tL2CAP_CFG_INFO *p_cfg);
static void hidh_l2cif_config_cfm (UINT16 l2cap_cid, tL2CAP_CFG_INFO *p_cfg);
static void hidh_l2cif_disconnect_ind (UINT16 l2cap_cid, BOOLEAN ack_needed);
static void hidh_l2cif_data_ind (UINT16 l2cap_cid, BT_HDR *p_msg);
static void hidh_l2cif_disconnect_cfm (UINT16 l2cap_cid, UINT16 result);
static void hidh_l2cif_cong_ind (UINT16 l2cap_cid, BOOLEAN congested);
static const tL2CAP_APPL_INFO hst_reg_info = {
hidh_l2cif_connect_ind,
hidh_l2cif_connect_cfm,
NULL,
hidh_l2cif_config_ind,
hidh_l2cif_config_cfm,
hidh_l2cif_disconnect_ind,
hidh_l2cif_disconnect_cfm,
NULL,
hidh_l2cif_data_ind,
hidh_l2cif_cong_ind,
NULL /* tL2CA_TX_COMPLETE_CB */
};
/*******************************************************************************
**
** Function hidh_l2cif_reg
**
** Description This function initializes the SDP unit.
**
** Returns void
**
*******************************************************************************/
tHID_STATUS hidh_conn_reg (void)
{
int xx;
/* Initialize the L2CAP configuration. We only care about MTU and flush */
memset(&hh_cb.l2cap_cfg, 0, sizeof(tL2CAP_CFG_INFO));
hh_cb.l2cap_cfg.mtu_present = TRUE;
hh_cb.l2cap_cfg.mtu = HID_HOST_MTU;
hh_cb.l2cap_cfg.flush_to_present = TRUE;
hh_cb.l2cap_cfg.flush_to = HID_HOST_FLUSH_TO;
/* Now, register with L2CAP */
if (!L2CA_Register (HID_PSM_CONTROL, (tL2CAP_APPL_INFO *) &hst_reg_info)) {
HIDH_TRACE_ERROR ("HID-Host Control Registration failed");
return (HID_ERR_L2CAP_FAILED) ;
}
if (!L2CA_Register (HID_PSM_INTERRUPT, (tL2CAP_APPL_INFO *) &hst_reg_info)) {
L2CA_Deregister( HID_PSM_CONTROL ) ;
HIDH_TRACE_ERROR ("HID-Host Interrupt Registration failed");
return (HID_ERR_L2CAP_FAILED) ;
}
for (xx = 0; xx < HID_HOST_MAX_DEVICES; xx++) {
hh_cb.devices[xx].in_use = FALSE ;
hh_cb.devices[xx].delay_remove = FALSE;
hh_cb.devices[xx].conn.conn_state = HID_CONN_STATE_UNUSED;
}
return (HID_SUCCESS);
}
/*******************************************************************************
**
** Function hidh_conn_disconnect
**
** Description This function disconnects a connection.
**
** Returns TRUE if disconnect started, FALSE if already disconnected
**
*******************************************************************************/
tHID_STATUS hidh_conn_disconnect (UINT8 dhandle)
{
tHID_CONN *p_hcon = &hh_cb.devices[dhandle].conn;
HIDH_TRACE_EVENT ("HID-Host disconnect");
if ((p_hcon->ctrl_cid != 0) || (p_hcon->intr_cid != 0)) {
/* Set l2cap idle timeout to 0 (so ACL link is disconnected
* immediately after last channel is closed) */
L2CA_SetIdleTimeoutByBdAddr(hh_cb.devices[dhandle].addr, 0, BT_TRANSPORT_BR_EDR);
/* Disconnect both interrupt and control channels */
if (p_hcon->intr_cid) {
p_hcon->conn_state = HID_CONN_STATE_DISCONNECTING_INTR;
L2CA_DisconnectReq (p_hcon->intr_cid);
} else if (p_hcon->ctrl_cid) {
p_hcon->conn_state = HID_CONN_STATE_DISCONNECTING_CTRL;
L2CA_DisconnectReq (p_hcon->ctrl_cid);
}
} else {
p_hcon->conn_state = HID_CONN_STATE_UNUSED;
}
return (HID_SUCCESS);
}
/*******************************************************************************
**
** Function hidh_sec_check_complete_term
**
** Description HID security check complete callback function.
**
** Returns Send L2CA_ConnectRsp OK if secutiry check succeed; otherwise
** send security block L2C connection response.
**
*******************************************************************************/
void hidh_sec_check_complete_term (BD_ADDR bd_addr, tBT_TRANSPORT transport, void *p_ref_data, UINT8 res)
{
tHID_HOST_DEV_CTB *p_dev = (tHID_HOST_DEV_CTB *) p_ref_data;
UNUSED(bd_addr);
UNUSED (transport);
if ( res == BTM_SUCCESS && p_dev->conn.conn_state == HID_CONN_STATE_SECURITY ) {
p_dev->conn.disc_reason = HID_SUCCESS; /* Authentication passed. Reset disc_reason (from HID_ERR_AUTH_FAILED) */
p_dev->conn.conn_state = HID_CONN_STATE_CONNECTING_INTR;
/* Send response to the L2CAP layer. */
L2CA_ConnectRsp (p_dev->addr, p_dev->conn.ctrl_id, p_dev->conn.ctrl_cid, L2CAP_CONN_OK, L2CAP_CONN_OK);
/* Send a Configuration Request. */
L2CA_ConfigReq (p_dev->conn.ctrl_cid, &hh_cb.l2cap_cfg);
}
/* security check fail */
else if (res != BTM_SUCCESS) {
p_dev->conn.disc_reason = HID_ERR_AUTH_FAILED; /* Save reason for disconnecting */
p_dev->conn.conn_state = HID_CONN_STATE_UNUSED;
L2CA_ConnectRsp (p_dev->addr, p_dev->conn.ctrl_id, p_dev->conn.ctrl_cid, L2CAP_CONN_SECURITY_BLOCK, L2CAP_CONN_OK);
}
}
/*******************************************************************************
**
** Function hidh_l2cif_connect_ind
**
** Description This function handles an inbound connection indication
** from L2CAP. This is the case where we are acting as a
** server.
**
** Returns void
**
*******************************************************************************/
static void hidh_l2cif_connect_ind (BD_ADDR bd_addr, UINT16 l2cap_cid, UINT16 psm, UINT8 l2cap_id)
{
tHID_CONN *p_hcon;
BOOLEAN bAccept = TRUE;
UINT8 i = HID_HOST_MAX_DEVICES;
tHID_HOST_DEV_CTB *p_dev;
HIDH_TRACE_EVENT ("HID-Host Rcvd L2CAP conn ind, PSM: 0x%04x CID 0x%x", psm, l2cap_cid);
/* always add incoming connection device into HID database by default */
if (HID_HostAddDev(bd_addr, HID_SEC_REQUIRED, &i) != HID_SUCCESS) {
L2CA_ConnectRsp (bd_addr, l2cap_id, l2cap_cid, L2CAP_CONN_SECURITY_BLOCK, 0);
return;
}
p_hcon = &hh_cb.devices[i].conn;
p_dev = &hh_cb.devices[i];
/* Check we are in the correct state for this */
if (psm == HID_PSM_INTERRUPT) {
if (p_hcon->ctrl_cid == 0) {
HIDH_TRACE_WARNING ("HID-Host Rcvd INTR L2CAP conn ind, but no CTL channel");
bAccept = FALSE;
}
if (p_hcon->conn_state != HID_CONN_STATE_CONNECTING_INTR) {
HIDH_TRACE_WARNING ("HID-Host Rcvd INTR L2CAP conn ind, wrong state: %d",
p_hcon->conn_state);
bAccept = FALSE;
}
} else { /* CTRL channel */
#if defined(HID_HOST_ACPT_NEW_CONN) && (HID_HOST_ACPT_NEW_CONN == TRUE)
p_hcon->ctrl_cid = p_hcon->intr_cid = 0;
p_hcon->conn_state = HID_CONN_STATE_UNUSED;
#else
if (p_hcon->conn_state != HID_CONN_STATE_UNUSED) {
HIDH_TRACE_WARNING ("HID-Host - Rcvd CTL L2CAP conn ind, wrong state: %d",
p_hcon->conn_state);
bAccept = FALSE;
}
#endif
}
if (!bAccept) {
L2CA_ConnectRsp (bd_addr, l2cap_id, l2cap_cid, L2CAP_CONN_NO_RESOURCES, 0);
return;
}
if (psm == HID_PSM_CONTROL) {
p_hcon->conn_flags = 0;
p_hcon->ctrl_cid = l2cap_cid;
p_hcon->ctrl_id = l2cap_id;
p_hcon->disc_reason = HID_L2CAP_CONN_FAIL; /* In case disconnection occurs before security is completed, then set CLOSE_EVT reason code to 'connection failure' */
p_hcon->conn_state = HID_CONN_STATE_SECURITY;
if (btm_sec_mx_access_request (p_dev->addr, HID_PSM_CONTROL,
FALSE, BTM_SEC_PROTO_HID,
(p_dev->attr_mask & HID_SEC_REQUIRED) ? HID_SEC_CHN : HID_NOSEC_CHN,
&hidh_sec_check_complete_term, p_dev) == BTM_CMD_STARTED) {
L2CA_ConnectRsp (bd_addr, l2cap_id, l2cap_cid, L2CAP_CONN_PENDING, L2CAP_CONN_OK);
}
return;
}
/* Transition to the next appropriate state, configuration */
p_hcon->conn_state = HID_CONN_STATE_CONFIG;
p_hcon->intr_cid = l2cap_cid;
/* Send response to the L2CAP layer. */
L2CA_ConnectRsp (bd_addr, l2cap_id, l2cap_cid, L2CAP_CONN_OK, L2CAP_CONN_OK);
/* Send a Configuration Request. */
L2CA_ConfigReq (l2cap_cid, &hh_cb.l2cap_cfg);
HIDH_TRACE_EVENT ("HID-Host Rcvd L2CAP conn ind, sent config req, PSM: 0x%04x CID 0x%x",
psm, l2cap_cid);
}
/*******************************************************************************
**
** Function hidh_proc_repage_timeout
**
** Description This function handles timeout (to page device).
**
** Returns void
**
*******************************************************************************/
void hidh_proc_repage_timeout (TIMER_LIST_ENT *p_tle)
{
hidh_conn_initiate( (UINT8) p_tle->param ) ;
hh_cb.devices[p_tle->param].conn_tries++;
hh_cb.callback( (UINT8) p_tle->param, hh_cb.devices[p_tle->param].addr,
HID_HDEV_EVT_RETRYING, hh_cb.devices[p_tle->param].conn_tries, NULL ) ;
}
/*******************************************************************************
**
** Function hidh_sec_check_complete_orig
**
** Description This function checks to see if security procedures are being
** carried out or not..
**
** Returns void
**
*******************************************************************************/
void hidh_sec_check_complete_orig (BD_ADDR bd_addr, tBT_TRANSPORT transport, void *p_ref_data, UINT8 res)
{
tHID_HOST_DEV_CTB *p_dev = (tHID_HOST_DEV_CTB *) p_ref_data;
UINT8 dhandle;
UNUSED(bd_addr);
UNUSED (transport);
dhandle = ((UINT32)p_dev - (UINT32) & (hh_cb.devices[0])) / sizeof(tHID_HOST_DEV_CTB);
if ( res == BTM_SUCCESS && p_dev->conn.conn_state == HID_CONN_STATE_SECURITY ) {
HIDH_TRACE_EVENT ("HID-Host Originator security pass.");
p_dev->conn.disc_reason = HID_SUCCESS; /* Authentication passed. Reset disc_reason (from HID_ERR_AUTH_FAILED) */
/* Transition to the next appropriate state, configuration */
p_dev->conn.conn_state = HID_CONN_STATE_CONFIG;
L2CA_ConfigReq (p_dev->conn.ctrl_cid, &hh_cb.l2cap_cfg);
HIDH_TRACE_EVENT ("HID-Host Got Control conn cnf, sent cfg req, CID: 0x%x", p_dev->conn.ctrl_cid);
}
if ( res != BTM_SUCCESS && p_dev->conn.conn_state == HID_CONN_STATE_SECURITY ) {
#if (HID_HOST_MAX_CONN_RETRY > 0)
if ( res == BTM_DEVICE_TIMEOUT ) {
if ( p_dev->conn_tries <= HID_HOST_MAX_CONN_RETRY ) {
hidh_conn_retry (dhandle);
return;
}
}
#endif
p_dev->conn.disc_reason = HID_ERR_AUTH_FAILED; /* Save reason for disconnecting */
hidh_conn_disconnect(dhandle);
}
}
/*******************************************************************************
**
** Function hidh_l2cif_connect_cfm
**
** Description This function handles the connect confirm events
** from L2CAP. This is the case when we are acting as a
** client and have sent a connect request.
**
** Returns void
**
*******************************************************************************/
static void hidh_l2cif_connect_cfm (UINT16 l2cap_cid, UINT16 result)
{
UINT8 dhandle;
tHID_CONN *p_hcon = NULL;
UINT32 reason;
tHID_HOST_DEV_CTB *p_dev = NULL;
/* Find CCB based on CID, and verify we are in a state to accept this message */
if ( (dhandle = find_conn_by_cid(l2cap_cid)) < HID_HOST_MAX_DEVICES ) {
p_dev = &hh_cb.devices[dhandle];
p_hcon = &hh_cb.devices[dhandle].conn;
}
if ((p_hcon == NULL) || (!(p_hcon->conn_flags & HID_CONN_FLAGS_IS_ORIG)) ||
((l2cap_cid == p_hcon->ctrl_cid) && (p_hcon->conn_state != HID_CONN_STATE_CONNECTING_CTRL) &&
(p_hcon->conn_state != HID_CONN_STATE_DISCONNECTING_INTR)) ||
((l2cap_cid == p_hcon->intr_cid) && (p_hcon->conn_state != HID_CONN_STATE_CONNECTING_INTR) &&
(p_hcon->conn_state != HID_CONN_STATE_DISCONNECTING_CTRL))) {
HIDH_TRACE_WARNING("HID-Host Rcvd unexpected conn cnf, CID 0x%x ", l2cap_cid);
return;
}
if (result != L2CAP_CONN_OK) {
if (l2cap_cid == p_hcon->ctrl_cid) {
p_hcon->ctrl_cid = 0;
} else {
p_hcon->intr_cid = 0;
}
hidh_conn_disconnect(dhandle);
#if (HID_HOST_MAX_CONN_RETRY > 0)
if ( (hh_cb.devices[dhandle].conn_tries <= HID_HOST_MAX_CONN_RETRY) &&
(result == HCI_ERR_CONNECTION_TOUT || result == HCI_ERR_UNSPECIFIED ||
result == HCI_ERR_PAGE_TIMEOUT) ) {
hidh_conn_retry(dhandle);
} else
#endif
{
reason = HID_L2CAP_CONN_FAIL | (UINT32) result ;
hh_cb.callback( dhandle, hh_cb.devices[dhandle].addr, HID_HDEV_EVT_CLOSE, reason, NULL ) ;
}
return;
}
/* receive Control Channel connect confirmation */
if (l2cap_cid == p_hcon->ctrl_cid) {
/* check security requirement */
p_hcon->conn_state = HID_CONN_STATE_SECURITY;
p_hcon->disc_reason = HID_L2CAP_CONN_FAIL; /* In case disconnection occurs before security is completed, then set CLOSE_EVT reason code to "connection failure" */
btm_sec_mx_access_request (p_dev->addr, HID_PSM_CONTROL,
TRUE, BTM_SEC_PROTO_HID,
(p_dev->attr_mask & HID_SEC_REQUIRED) ? HID_SEC_CHN : HID_NOSEC_CHN,
&hidh_sec_check_complete_orig, p_dev);
} else {
p_hcon->conn_state = HID_CONN_STATE_CONFIG;
/* Send a Configuration Request. */
L2CA_ConfigReq (l2cap_cid, &hh_cb.l2cap_cfg);
HIDH_TRACE_EVENT ("HID-Host got Interrupt conn cnf, sent cfg req, CID: 0x%x", l2cap_cid);
}
return;
}
/*******************************************************************************
**
** Function hidh_l2cif_config_ind
**
** Description This function processes the L2CAP configuration indication
** event.
**
** Returns void
**
*******************************************************************************/
static void hidh_l2cif_config_ind (UINT16 l2cap_cid, tL2CAP_CFG_INFO *p_cfg)
{
UINT8 dhandle;
tHID_CONN *p_hcon = NULL;
UINT32 reason;
/* Find CCB based on CID */
if ( (dhandle = find_conn_by_cid(l2cap_cid)) < HID_HOST_MAX_DEVICES ) {
p_hcon = &hh_cb.devices[dhandle].conn;
}
if (p_hcon == NULL) {
HIDH_TRACE_WARNING ("HID-Host Rcvd L2CAP cfg ind, unknown CID: 0x%x", l2cap_cid);
return;
}
HIDH_TRACE_EVENT ("HID-Host Rcvd cfg ind, sent cfg cfm, CID: 0x%x", l2cap_cid);
/* Remember the remote MTU size */
if ((!p_cfg->mtu_present) || (p_cfg->mtu > HID_HOST_MTU)) {
p_hcon->rem_mtu_size = HID_HOST_MTU;
} else {
p_hcon->rem_mtu_size = p_cfg->mtu;
}
/* For now, always accept configuration from the other side */
p_cfg->flush_to_present = FALSE;
p_cfg->mtu_present = FALSE;
p_cfg->result = L2CAP_CFG_OK;
L2CA_ConfigRsp (l2cap_cid, p_cfg);
if (l2cap_cid == p_hcon->ctrl_cid) {
p_hcon->conn_flags |= HID_CONN_FLAGS_HIS_CTRL_CFG_DONE;
if ((p_hcon->conn_flags & HID_CONN_FLAGS_IS_ORIG) && (p_hcon->conn_flags & HID_CONN_FLAGS_MY_CTRL_CFG_DONE) &&
(p_hcon->conn_state != HID_CONN_STATE_CONNECTING_INTR)) {
/* Connect interrupt channel */
p_hcon->disc_reason = HID_L2CAP_CONN_FAIL; /* Reset initial reason for CLOSE_EVT: Connection Attempt was made but failed */
if ((p_hcon->intr_cid = L2CA_ConnectReq (HID_PSM_INTERRUPT, hh_cb.devices[dhandle].addr)) == 0) {
HIDH_TRACE_WARNING ("HID-Host INTR Originate failed");
reason = HID_L2CAP_REQ_FAIL ;
p_hcon->conn_state = HID_CONN_STATE_UNUSED;
hidh_conn_disconnect (dhandle);
hh_cb.callback( dhandle, hh_cb.devices[dhandle].addr, HID_HDEV_EVT_CLOSE, reason, NULL ) ;
return;
} else {
/* Transition to the next appropriate state, waiting for connection confirm on interrupt channel. */
p_hcon->conn_state = HID_CONN_STATE_CONNECTING_INTR;
}
}
} else {
p_hcon->conn_flags |= HID_CONN_FLAGS_HIS_INTR_CFG_DONE;
}
/* If all configuration is complete, change state and tell management we are up */
if (((p_hcon->conn_flags & HID_CONN_FLAGS_ALL_CONFIGURED) == HID_CONN_FLAGS_ALL_CONFIGURED)
&& (p_hcon->conn_state == HID_CONN_STATE_CONFIG)) {
p_hcon->conn_state = HID_CONN_STATE_CONNECTED;
/* Reset disconnect reason to success, as connection successful */
p_hcon->disc_reason = HID_SUCCESS;
hh_cb.devices[dhandle].state = HID_DEV_CONNECTED;
hh_cb.callback( dhandle, hh_cb.devices[dhandle].addr, HID_HDEV_EVT_OPEN, 0, NULL ) ;
}
}
/*******************************************************************************
**
** Function hidh_l2cif_config_cfm
**
** Description This function processes the L2CAP configuration confirmation
** event.
**
** Returns void
**
*******************************************************************************/
static void hidh_l2cif_config_cfm (UINT16 l2cap_cid, tL2CAP_CFG_INFO *p_cfg)
{
UINT8 dhandle;
tHID_CONN *p_hcon = NULL;
UINT32 reason;
HIDH_TRACE_EVENT ("HID-Host Rcvd cfg cfm, CID: 0x%x Result: %d", l2cap_cid, p_cfg->result);
/* Find CCB based on CID */
if ( (dhandle = find_conn_by_cid(l2cap_cid)) < HID_HOST_MAX_DEVICES ) {
p_hcon = &hh_cb.devices[dhandle].conn;
}
if (p_hcon == NULL) {
HIDH_TRACE_WARNING ("HID-Host Rcvd L2CAP cfg ind, unknown CID: 0x%x", l2cap_cid);
return;
}
/* If configuration failed, disconnect the channel(s) */
if (p_cfg->result != L2CAP_CFG_OK) {
hidh_conn_disconnect (dhandle);
reason = HID_L2CAP_CFG_FAIL | (UINT32) p_cfg->result ;
hh_cb.callback( dhandle, hh_cb.devices[dhandle].addr, HID_HDEV_EVT_CLOSE, reason, NULL ) ;
return;
}
if (l2cap_cid == p_hcon->ctrl_cid) {
p_hcon->conn_flags |= HID_CONN_FLAGS_MY_CTRL_CFG_DONE;
if ((p_hcon->conn_flags & HID_CONN_FLAGS_IS_ORIG) && (p_hcon->conn_flags & HID_CONN_FLAGS_HIS_CTRL_CFG_DONE) &&
(p_hcon->conn_state != HID_CONN_STATE_CONNECTING_INTR)) {
/* Connect interrupt channel */
p_hcon->disc_reason = HID_L2CAP_CONN_FAIL; /* Reset initial reason for CLOSE_EVT: Connection Attempt was made but failed */
if ((p_hcon->intr_cid = L2CA_ConnectReq (HID_PSM_INTERRUPT, hh_cb.devices[dhandle].addr)) == 0) {
HIDH_TRACE_WARNING ("HID-Host INTR Originate failed");
reason = HID_L2CAP_REQ_FAIL ;
p_hcon->conn_state = HID_CONN_STATE_UNUSED;
hidh_conn_disconnect (dhandle);
hh_cb.callback( dhandle, hh_cb.devices[dhandle].addr, HID_HDEV_EVT_CLOSE, reason, NULL ) ;
return;
} else {
/* Transition to the next appropriate state, waiting for connection confirm on interrupt channel. */
p_hcon->conn_state = HID_CONN_STATE_CONNECTING_INTR;
}
}
} else {
p_hcon->conn_flags |= HID_CONN_FLAGS_MY_INTR_CFG_DONE;
}
/* If all configuration is complete, change state and tell management we are up */
if (((p_hcon->conn_flags & HID_CONN_FLAGS_ALL_CONFIGURED) == HID_CONN_FLAGS_ALL_CONFIGURED)
&& (p_hcon->conn_state == HID_CONN_STATE_CONFIG)) {
p_hcon->conn_state = HID_CONN_STATE_CONNECTED;
/* Reset disconnect reason to success, as connection successful */
p_hcon->disc_reason = HID_SUCCESS;
hh_cb.devices[dhandle].state = HID_DEV_CONNECTED;
hh_cb.callback( dhandle, hh_cb.devices[dhandle].addr, HID_HDEV_EVT_OPEN, 0, NULL ) ;
}
}
/*******************************************************************************
**
** Function hidh_l2cif_disconnect_ind
**
** Description This function handles a disconnect event from L2CAP. If
** requested to, we ack the disconnect before dropping the CCB
**
** Returns void
**
*******************************************************************************/
static void hidh_l2cif_disconnect_ind (UINT16 l2cap_cid, BOOLEAN ack_needed)
{
UINT8 dhandle;
tHID_CONN *p_hcon = NULL;
UINT16 disc_res = HCI_SUCCESS;
UINT16 hid_close_evt_reason;
/* Find CCB based on CID */
if ( (dhandle = find_conn_by_cid(l2cap_cid)) < HID_HOST_MAX_DEVICES ) {
p_hcon = &hh_cb.devices[dhandle].conn;
}
if (p_hcon == NULL) {
HIDH_TRACE_WARNING ("HID-Host Rcvd L2CAP disc, unknown CID: 0x%x", l2cap_cid);
return;
}
if (ack_needed) {
L2CA_DisconnectRsp (l2cap_cid);
}
HIDH_TRACE_EVENT ("HID-Host Rcvd L2CAP disc, CID: 0x%x", l2cap_cid);
if (l2cap_cid == p_hcon->ctrl_cid) {
p_hcon->ctrl_cid = 0;
p_hcon->conn_state = HID_CONN_STATE_DISCONNECTING_CTRL;
} else {
p_hcon->intr_cid = 0;
p_hcon->conn_state = HID_CONN_STATE_DISCONNECTING_INTR;
}
if ((p_hcon->ctrl_cid == 0) && (p_hcon->intr_cid == 0)) {
hh_cb.devices[dhandle].state = HID_DEV_NO_CONN;
p_hcon->conn_state = HID_CONN_STATE_UNUSED;
if ( !ack_needed ) {
disc_res = btm_get_acl_disc_reason_code();
}
#if (HID_HOST_MAX_CONN_RETRY > 0)
if ( (disc_res == HCI_ERR_CONNECTION_TOUT || disc_res == HCI_ERR_UNSPECIFIED) &&
(!(hh_cb.devices[dhandle].attr_mask & HID_RECONN_INIT)) &&
(hh_cb.devices[dhandle].attr_mask & HID_NORMALLY_CONNECTABLE)) {
hh_cb.devices[dhandle].conn_tries = 0;
hh_cb.devices[dhandle].conn.timer_entry.param = (UINT32) dhandle;
btu_start_timer (&(hh_cb.devices[dhandle].conn.timer_entry), BTU_TTYPE_HID_HOST_REPAGE_TO, HID_HOST_REPAGE_WIN);
hh_cb.callback( dhandle, hh_cb.devices[dhandle].addr, HID_HDEV_EVT_CLOSE, disc_res, NULL);
} else
#endif
{
/* Set reason code for HID_HDEV_EVT_CLOSE */
hid_close_evt_reason = p_hcon->disc_reason;
/* If we got baseband sent HCI_DISCONNECT_COMPLETE_EVT due to security failure, then set reason to HID_ERR_AUTH_FAILED */
if ((disc_res == HCI_ERR_AUTH_FAILURE) ||
(disc_res == HCI_ERR_KEY_MISSING) ||
(disc_res == HCI_ERR_HOST_REJECT_SECURITY) ||
(disc_res == HCI_ERR_PAIRING_NOT_ALLOWED) ||
(disc_res == HCI_ERR_UNIT_KEY_USED) ||
(disc_res == HCI_ERR_PAIRING_WITH_UNIT_KEY_NOT_SUPPORTED) ||
(disc_res == HCI_ERR_ENCRY_MODE_NOT_ACCEPTABLE) ||
(disc_res == HCI_ERR_REPEATED_ATTEMPTS)) {
hid_close_evt_reason = HID_ERR_AUTH_FAILED;
}
hh_cb.callback( dhandle, hh_cb.devices[dhandle].addr, HID_HDEV_EVT_CLOSE, hid_close_evt_reason, NULL ) ;
}
}
}
/*******************************************************************************
**
** Function hidh_l2cif_disconnect_cfm
**
** Description This function handles a disconnect confirm event from L2CAP.
**
** Returns void
**
*******************************************************************************/
static void hidh_l2cif_disconnect_cfm (UINT16 l2cap_cid, UINT16 result)
{
UINT8 dhandle;
tHID_CONN *p_hcon = NULL;
UNUSED(result);
/* Find CCB based on CID */
if ( (dhandle = find_conn_by_cid(l2cap_cid)) < HID_HOST_MAX_DEVICES ) {
p_hcon = &hh_cb.devices[dhandle].conn;
}
if (p_hcon == NULL) {
HIDH_TRACE_WARNING ("HID-Host Rcvd L2CAP disc cfm, unknown CID: 0x%x", l2cap_cid);
return;
}
HIDH_TRACE_EVENT ("HID-Host Rcvd L2CAP disc cfm, CID: 0x%x", l2cap_cid);
if (l2cap_cid == p_hcon->ctrl_cid) {
p_hcon->ctrl_cid = 0;
} else {
p_hcon->intr_cid = 0;
if (p_hcon->ctrl_cid) {
HIDH_TRACE_EVENT ("HID-Host Initiating L2CAP Ctrl disconnection");
L2CA_DisconnectReq (p_hcon->ctrl_cid);
}
}
if ((p_hcon->ctrl_cid == 0) && (p_hcon->intr_cid == 0)) {
hh_cb.devices[dhandle].state = HID_DEV_NO_CONN;
p_hcon->conn_state = HID_CONN_STATE_UNUSED;
// removes the device from list devices that host has to manage
if (hh_cb.devices[dhandle].delay_remove) {
hh_cb.devices[dhandle].in_use = FALSE;
hh_cb.devices[dhandle].delay_remove = FALSE;
hh_cb.devices[dhandle].attr_mask = 0;
}
hh_cb.callback( dhandle, hh_cb.devices[dhandle].addr, HID_HDEV_EVT_CLOSE, p_hcon->disc_reason, NULL ) ;
}
}
/*******************************************************************************
**
** Function hidh_l2cif_cong_ind
**
** Description This function handles a congestion status event from L2CAP.
**
** Returns void
**
*******************************************************************************/
static void hidh_l2cif_cong_ind (UINT16 l2cap_cid, BOOLEAN congested)
{
UINT8 dhandle;
tHID_CONN *p_hcon = NULL;
/* Find CCB based on CID */
if ( (dhandle = find_conn_by_cid(l2cap_cid)) < HID_HOST_MAX_DEVICES ) {
p_hcon = &hh_cb.devices[dhandle].conn;
}
if (p_hcon == NULL) {
HIDH_TRACE_WARNING ("HID-Host Rcvd L2CAP congestion status, unknown CID: 0x%x", l2cap_cid);
return;
}
HIDH_TRACE_EVENT ("HID-Host Rcvd L2CAP congestion status, CID: 0x%x Cong: %d", l2cap_cid, congested);
if (congested) {
p_hcon->conn_flags |= HID_CONN_FLAGS_CONGESTED;
} else {
p_hcon->conn_flags &= ~HID_CONN_FLAGS_CONGESTED;
}
}
/*******************************************************************************
**
** Function hidh_l2cif_data_ind
**
** Description This function is called when data is received from L2CAP.
** if we are the originator of the connection, we are the SDP
** client, and the received message is queued up for the client.
**
** If we are the destination of the connection, we are the SDP
** server, so the message is passed to the server processing
** function.
**
** Returns void
**
*******************************************************************************/
static void hidh_l2cif_data_ind (UINT16 l2cap_cid, BT_HDR *p_msg)
{
UINT8 *p_data = (UINT8 *)(p_msg + 1) + p_msg->offset;
UINT8 ttype, param, rep_type, evt;
UINT8 dhandle;
tHID_CONN *p_hcon = NULL;
HIDH_TRACE_DEBUG ("HID-Host hidh_l2cif_data_ind [l2cap_cid=0x%04x]", l2cap_cid);
/* Find CCB based on CID */
if ((dhandle = find_conn_by_cid(l2cap_cid)) < HID_HOST_MAX_DEVICES) {
p_hcon = &hh_cb.devices[dhandle].conn;
}
if (p_hcon == NULL) {
HIDH_TRACE_WARNING ("HID-Host Rcvd L2CAP data, unknown CID: 0x%x", l2cap_cid);
osi_free (p_msg);
return;
}
ttype = HID_GET_TRANS_FROM_HDR(*p_data);
param = HID_GET_PARAM_FROM_HDR(*p_data);
rep_type = param & HID_PAR_REP_TYPE_MASK;
p_data++;
/* Get rid of the data type */
p_msg->len--;
p_msg->offset++;
switch (ttype) {
case HID_TRANS_HANDSHAKE:
hh_cb.callback(dhandle, hh_cb.devices[dhandle].addr, HID_HDEV_EVT_HANDSHAKE, param, NULL);
osi_free (p_msg);
break;
case HID_TRANS_CONTROL:
switch (param) {
case HID_PAR_CONTROL_VIRTUAL_CABLE_UNPLUG:
hidh_conn_disconnect( dhandle ) ;
/* Device is unplugging from us. Tell USB */
hh_cb.callback(dhandle, hh_cb.devices[dhandle].addr, HID_HDEV_EVT_VC_UNPLUG, 0, NULL);
break;
default:
break;
}
osi_free (p_msg);
break;
case HID_TRANS_DATA:
evt = (hh_cb.devices[dhandle].conn.intr_cid == l2cap_cid) ?
HID_HDEV_EVT_INTR_DATA : HID_HDEV_EVT_CTRL_DATA;
hh_cb.callback(dhandle, hh_cb.devices[dhandle].addr, evt, rep_type, p_msg);
break;
case HID_TRANS_DATAC:
evt = (hh_cb.devices[dhandle].conn.intr_cid == l2cap_cid) ?
HID_HDEV_EVT_INTR_DATC : HID_HDEV_EVT_CTRL_DATC;
hh_cb.callback(dhandle, hh_cb.devices[dhandle].addr, evt, rep_type, p_msg);
break;
default:
osi_free (p_msg);
break;
}
}
/*******************************************************************************
**
** Function hidh_conn_snd_data
**
** Description This function is sends out data.
**
** Returns tHID_STATUS
**
*******************************************************************************/
tHID_STATUS hidh_conn_snd_data (UINT8 dhandle, UINT8 trans_type, UINT8 param,
UINT16 data, UINT8 report_id, BT_HDR *buf)
{
tHID_CONN *p_hcon = &hh_cb.devices[dhandle].conn;
BT_HDR *p_buf;
UINT8 *p_out;
UINT16 bytes_copied;
BOOLEAN seg_req = FALSE;
UINT16 data_size;
UINT16 cid;
UINT16 buf_size;
UINT8 use_data = 0 ;
BOOLEAN blank_datc = FALSE;
if (!BTM_IsAclConnectionUp(hh_cb.devices[dhandle].addr, BT_TRANSPORT_BR_EDR)) {
if (buf) {
osi_free ((void *)buf);
}
return ( HID_ERR_NO_CONNECTION );
}
if (p_hcon->conn_flags & HID_CONN_FLAGS_CONGESTED) {
if (buf) {
osi_free ((void *)buf);
}
return ( HID_ERR_CONGESTED );
}
switch ( trans_type ) {
case HID_TRANS_CONTROL:
case HID_TRANS_GET_REPORT:
case HID_TRANS_SET_REPORT:
case HID_TRANS_GET_PROTOCOL:
case HID_TRANS_SET_PROTOCOL:
case HID_TRANS_GET_IDLE:
case HID_TRANS_SET_IDLE:
cid = p_hcon->ctrl_cid;
buf_size = HID_CONTROL_BUF_SIZE;
break;
case HID_TRANS_DATA:
cid = p_hcon->intr_cid;
buf_size = HID_INTERRUPT_BUF_SIZE;
break;
default:
return (HID_ERR_INVALID_PARAM) ;
}
if ( trans_type == HID_TRANS_SET_IDLE ) {
use_data = 1;
} else if ( (trans_type == HID_TRANS_GET_REPORT) && (param & 0x08) ) {
use_data = 2;
}
do {
if ( buf == NULL || blank_datc ) {
if ((p_buf = (BT_HDR *)osi_malloc(buf_size)) == NULL) {
return (HID_ERR_NO_RESOURCES);
}
p_buf->offset = L2CAP_MIN_OFFSET;
seg_req = FALSE;
data_size = 0;
bytes_copied = 0;
blank_datc = FALSE;
} else if ( (buf->len > (p_hcon->rem_mtu_size - 1))) {
if ((p_buf = (BT_HDR *)osi_malloc(buf_size)) == NULL) {
return (HID_ERR_NO_RESOURCES);
}
p_buf->offset = L2CAP_MIN_OFFSET;
seg_req = TRUE;
data_size = buf->len;
bytes_copied = p_hcon->rem_mtu_size - 1;
} else {
p_buf = buf ;
p_buf->offset -= 1;
seg_req = FALSE;
data_size = buf->len;
bytes_copied = buf->len;
}
p_out = (UINT8 *)(p_buf + 1) + p_buf->offset;
*p_out++ = HID_BUILD_HDR(trans_type, param);
/* If report ID required for this device */
if ( (trans_type == HID_TRANS_GET_REPORT) && (report_id != 0) ) {
*p_out = report_id;
data_size = bytes_copied = 1;
}
if (seg_req) {
memcpy (p_out, (((UINT8 *)(buf + 1)) + buf->offset), bytes_copied);
buf->offset += bytes_copied;
buf->len -= bytes_copied;
} else if ( use_data == 1) {
*(p_out + bytes_copied) = data & 0xff;
} else if ( use_data == 2 ) {
*(p_out + bytes_copied) = data & 0xff;
*(p_out + bytes_copied + 1) = (data >> 8) & 0xff ;
}
p_buf->len = bytes_copied + 1 + use_data;
data_size -= bytes_copied;
/* Send the buffer through L2CAP */
if (L2CA_DataWrite(cid, p_buf) == L2CAP_DW_FAILED) {
return (HID_ERR_CONGESTED);
}
if (data_size) {
trans_type = HID_TRANS_DATAC;
} else if ( bytes_copied == (p_hcon->rem_mtu_size - 1) ) {
trans_type = HID_TRANS_DATAC;
blank_datc = TRUE;
}
} while ((data_size != 0) || blank_datc ) ;
return (HID_SUCCESS);
}
/*******************************************************************************
**
** Function hidh_conn_initiate
**
** Description This function is called by the management to create a connection.
**
** Returns void
**
*******************************************************************************/
tHID_STATUS hidh_conn_initiate (UINT8 dhandle)
{
UINT8 service_id = BTM_SEC_SERVICE_HIDH_NOSEC_CTRL;
UINT32 mx_chan_id = HID_NOSEC_CHN;
tHID_HOST_DEV_CTB *p_dev = &hh_cb.devices[dhandle];
if ( p_dev->conn.conn_state != HID_CONN_STATE_UNUSED ) {
return ( HID_ERR_CONN_IN_PROCESS );
}
p_dev->conn.ctrl_cid = 0;
p_dev->conn.intr_cid = 0;
p_dev->conn.disc_reason = HID_L2CAP_CONN_FAIL; /* Reset initial reason for CLOSE_EVT: Connection Attempt was made but failed */
/* We are the originator of this connection */
p_dev->conn.conn_flags |= HID_CONN_FLAGS_IS_ORIG;
if (p_dev->attr_mask & HID_SEC_REQUIRED) {
service_id = BTM_SEC_SERVICE_HIDH_SEC_CTRL;
mx_chan_id = HID_SEC_CHN;
}
BTM_SetOutService (p_dev->addr, service_id, mx_chan_id);
/* Check if L2CAP started the connection process */
if ((p_dev->conn.ctrl_cid = L2CA_ConnectReq (HID_PSM_CONTROL, p_dev->addr)) == 0) {
HIDH_TRACE_WARNING ("HID-Host Originate failed");
hh_cb.callback( dhandle, hh_cb.devices[dhandle].addr, HID_HDEV_EVT_CLOSE,
HID_ERR_L2CAP_FAILED, NULL ) ;
} else {
/* Transition to the next appropriate state, waiting for connection confirm on control channel. */
p_dev->conn.conn_state = HID_CONN_STATE_CONNECTING_CTRL;
}
return ( HID_SUCCESS );
}
/*******************************************************************************
**
** Function hidh_conn_is_orig
**
** Description This function check if we are the originator of this connection
**
** Returns BOOLEAN
**
*******************************************************************************/
BOOLEAN hidh_conn_is_orig(UINT8 dhandle)
{
tHID_HOST_DEV_CTB *p_dev = &hh_cb.devices[dhandle];
return (p_dev->conn.conn_flags & HID_CONN_FLAGS_IS_ORIG);
}
/*******************************************************************************
**
** Function find_conn_by_cid
**
** Description This function finds a connection control block based on CID
**
** Returns address of control block, or NULL if not found
**
*******************************************************************************/
static UINT8 find_conn_by_cid (UINT16 cid)
{
UINT8 xx;
for (xx = 0; xx < HID_HOST_MAX_DEVICES; xx++) {
if ((hh_cb.devices[xx].in_use) && (hh_cb.devices[xx].conn.conn_state != HID_CONN_STATE_UNUSED)
&& ((hh_cb.devices[xx].conn.ctrl_cid == cid) || (hh_cb.devices[xx].conn.intr_cid == cid))) {
break;
}
}
return (xx);
}
void hidh_conn_dereg( void )
{
L2CA_Deregister (HID_PSM_CONTROL);
L2CA_Deregister (HID_PSM_INTERRUPT);
}
/*******************************************************************************
**
** Function hidh_conn_retry
**
** Description This function is called to retry a failed connection.
**
** Returns void
**
*******************************************************************************/
static void hidh_conn_retry( UINT8 dhandle )
{
tHID_HOST_DEV_CTB *p_dev = &hh_cb.devices[dhandle];
p_dev->conn.conn_state = HID_CONN_STATE_UNUSED;
p_dev->conn.timer_entry.param = (UINT32) dhandle;
#if (HID_HOST_REPAGE_WIN > 0)
btu_start_timer (&(p_dev->conn.timer_entry), BTU_TTYPE_HID_HOST_REPAGE_TO, HID_HOST_REPAGE_WIN);
#else
hidh_proc_repage_timeout( &(p_dev->conn.timer_entry) );
#endif
}
#endif // HID_HOST_INCLUDED
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