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android / platform / external / libnfc-nci / 24d5f0d / . / src / nfc / llcp / llcp_api.c
blob: fb70b0d2b3acdee301dca248b88e35c3e9d915a4 [file] [log] [blame]
/******************************************************************************
*
* Copyright (C) 2010-2014 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 LLCP API code
*
******************************************************************************/
#include <string.h>
#include "gki.h"
#include "nfc_target.h"
#include "bt_types.h"
#include "llcp_api.h"
#include "llcp_int.h"
#include "llcp_defs.h"
#if (LLCP_TEST_INCLUDED == TRUE) /* this is for LLCP testing */
tLLCP_TEST_PARAMS llcp_test_params =
{
LLCP_VERSION_VALUE,
0, /* not override */
};
/*******************************************************************************
**
** Function LLCP_SetTestParams
**
** Description Set test parameters for LLCP
**
**
** Returns void
**
*******************************************************************************/
void LLCP_SetTestParams (UINT8 version, UINT16 wks)
{
LLCP_TRACE_API2 ("LLCP_SetTestParams () version:0x%02X, wks:0x%04X",
version, wks);
if (version != 0xFF)
llcp_test_params.version = version;
if (wks != 0xFFFF)
llcp_test_params.wks = wks;
}
#endif
/*******************************************************************************
**
** Function LLCP_SetConfig
**
** Description Set configuration parameters for LLCP
** - Local Link MIU
** - Option parameter
** - Response Waiting Time Index
** - Local Link Timeout
** - Inactivity Timeout as initiator role
** - Inactivity Timeout as target role
** - Delay SYMM response
** - Data link connection timeout
** - Delay timeout to send first PDU as initiator
**
** Returns void
**
*******************************************************************************/
void LLCP_SetConfig (UINT16 link_miu,
UINT8 opt,
UINT8 wt,
UINT16 link_timeout,
UINT16 inact_timeout_init,
UINT16 inact_timeout_target,
UINT16 symm_delay,
UINT16 data_link_timeout,
UINT16 delay_first_pdu_timeout)
{
LLCP_TRACE_API4 ("LLCP_SetConfig () link_miu:%d, opt:0x%02X, wt:%d, link_timeout:%d",
link_miu, opt, wt, link_timeout);
LLCP_TRACE_API4 (" inact_timeout (init:%d,target:%d), symm_delay:%d, data_link_timeout:%d",
inact_timeout_init, inact_timeout_target, symm_delay, data_link_timeout);
LLCP_TRACE_API1 (" delay_first_pdu_timeout:%d", delay_first_pdu_timeout);
if (link_miu < LLCP_DEFAULT_MIU)
{
LLCP_TRACE_ERROR1 ("LLCP_SetConfig (): link_miu shall not be smaller than LLCP_DEFAULT_MIU (%d)",
LLCP_DEFAULT_MIU);
link_miu = LLCP_DEFAULT_MIU;
}
else if (link_miu > LLCP_MAX_MIU)
{
LLCP_TRACE_ERROR1 ("LLCP_SetConfig (): link_miu shall not be bigger than LLCP_MAX_MIU (%d)",
LLCP_MAX_MIU);
link_miu = LLCP_MAX_MIU;
}
/* if Link MIU is bigger than GKI buffer */
if (link_miu > LLCP_MIU)
{
LLCP_TRACE_ERROR1 ("LLCP_SetConfig (): link_miu shall not be bigger than LLCP_MIU (%d)",
LLCP_MIU);
llcp_cb.lcb.local_link_miu = LLCP_MIU;
}
else
llcp_cb.lcb.local_link_miu = link_miu;
llcp_cb.lcb.local_opt = opt;
llcp_cb.lcb.local_wt = wt;
if (link_timeout < LLCP_LTO_UNIT)
{
LLCP_TRACE_ERROR1 ("LLCP_SetConfig (): link_timeout shall not be smaller than LLCP_LTO_UNIT (%d ms)",
LLCP_LTO_UNIT);
llcp_cb.lcb.local_lto = LLCP_DEFAULT_LTO_IN_MS;
}
else if (link_timeout > LLCP_MAX_LTO_IN_MS)
{
LLCP_TRACE_ERROR1 ("LLCP_SetConfig (): link_timeout shall not be bigger than LLCP_MAX_LTO_IN_MS (%d ms)",
LLCP_MAX_LTO_IN_MS);
llcp_cb.lcb.local_lto = LLCP_MAX_LTO_IN_MS;
}
else
llcp_cb.lcb.local_lto = link_timeout;
llcp_cb.lcb.inact_timeout_init = inact_timeout_init;
llcp_cb.lcb.inact_timeout_target = inact_timeout_target;
llcp_cb.lcb.symm_delay = symm_delay;
llcp_cb.lcb.data_link_timeout = data_link_timeout;
llcp_cb.lcb.delay_first_pdu_timeout = delay_first_pdu_timeout;
}
/*******************************************************************************
**
** Function LLCP_GetConfig
**
** Description Get configuration parameters for LLCP
** - Local Link MIU
** - Option parameter
** - Response Waiting Time Index
** - Local Link Timeout
** - Inactivity Timeout as initiator role
** - Inactivity Timeout as target role
** - Delay SYMM response
** - Data link connection timeout
** - Delay timeout to send first PDU as initiator
**
** Returns void
**
*******************************************************************************/
void LLCP_GetConfig (UINT16 *p_link_miu,
UINT8 *p_opt,
UINT8 *p_wt,
UINT16 *p_link_timeout,
UINT16 *p_inact_timeout_init,
UINT16 *p_inact_timeout_target,
UINT16 *p_symm_delay,
UINT16 *p_data_link_timeout,
UINT16 *p_delay_first_pdu_timeout)
{
*p_link_miu = llcp_cb.lcb.local_link_miu;
*p_opt = llcp_cb.lcb.local_opt;
*p_wt = llcp_cb.lcb.local_wt;
*p_link_timeout = llcp_cb.lcb.local_lto;
*p_inact_timeout_init = llcp_cb.lcb.inact_timeout_init;
*p_inact_timeout_target = llcp_cb.lcb.inact_timeout_target;
*p_symm_delay = llcp_cb.lcb.symm_delay;
*p_data_link_timeout = llcp_cb.lcb.data_link_timeout;
*p_delay_first_pdu_timeout = llcp_cb.lcb.delay_first_pdu_timeout;
LLCP_TRACE_API4 ("LLCP_GetConfig () link_miu:%d, opt:0x%02X, wt:%d, link_timeout:%d",
*p_link_miu, *p_opt, *p_wt, *p_link_timeout);
LLCP_TRACE_API4 (" inact_timeout (init:%d, target:%d), symm_delay:%d, data_link_timeout:%d",
*p_inact_timeout_init, *p_inact_timeout_target, *p_symm_delay, *p_data_link_timeout);
LLCP_TRACE_API1 (" delay_first_pdu_timeout:%d", *p_delay_first_pdu_timeout);
}
/*******************************************************************************
**
** Function LLCP_GetDiscoveryConfig
**
** Description Returns discovery config for ISO 18092 MAC link activation
** This function is called to get general bytes for NFC_PMID_ATR_REQ_GEN_BYTES
** or NFC_PMID_ATR_RES_GEN_BYTES before starting discovery.
**
** wt:Waiting time 0 - 8, only for listen
** p_gen_bytes: pointer to store LLCP magic number and paramters
** p_gen_bytes_len: length of buffer for gen bytes as input
** (NOTE:it must be bigger than LLCP_MIN_GEN_BYTES)
** actual gen bytes size as output
**
** Restrictions on the use of ISO 18092
** 1. The DID features shall not be used.
** 2. the NAD features shall not be used.
** 3. Frame waiting time extentions (WTX) shall not be used.
**
** Returns None
**
*******************************************************************************/
void LLCP_GetDiscoveryConfig (UINT8 *p_wt,
UINT8 *p_gen_bytes,
UINT8 *p_gen_bytes_len)
{
UINT8 *p = p_gen_bytes;
LLCP_TRACE_API0 ("LLCP_GetDiscoveryConfig ()");
if (*p_gen_bytes_len < LLCP_MIN_GEN_BYTES)
{
LLCP_TRACE_ERROR1 ("LLCP_GetDiscoveryConfig (): GenBytes length shall not be smaller than LLCP_MIN_GEN_BYTES (%d)",
LLCP_MIN_GEN_BYTES);
*p_gen_bytes_len = 0;
return;
}
*p_wt = llcp_cb.lcb.local_wt;
UINT8_TO_BE_STREAM (p, LLCP_MAGIC_NUMBER_BYTE0);
UINT8_TO_BE_STREAM (p, LLCP_MAGIC_NUMBER_BYTE1);
UINT8_TO_BE_STREAM (p, LLCP_MAGIC_NUMBER_BYTE2);
#if (LLCP_TEST_INCLUDED == TRUE) /* this is for LLCP testing */
UINT8_TO_BE_STREAM (p, LLCP_VERSION_TYPE);
UINT8_TO_BE_STREAM (p, LLCP_VERSION_LEN);
UINT8_TO_BE_STREAM (p, llcp_test_params.version);
UINT8_TO_BE_STREAM (p, LLCP_MIUX_TYPE);
UINT8_TO_BE_STREAM (p, LLCP_MIUX_LEN);
UINT16_TO_BE_STREAM (p, (llcp_cb.lcb.local_link_miu - LLCP_DEFAULT_MIU));
UINT8_TO_BE_STREAM (p, LLCP_WKS_TYPE);
UINT8_TO_BE_STREAM (p, LLCP_WKS_LEN);
if (llcp_test_params.wks == 0) /* not override */
{
UINT16_TO_BE_STREAM (p, llcp_cb.lcb.wks);
}
else
{
UINT16_TO_BE_STREAM (p, llcp_test_params.wks);
}
#else
UINT8_TO_BE_STREAM (p, LLCP_VERSION_TYPE);
UINT8_TO_BE_STREAM (p, LLCP_VERSION_LEN);
UINT8_TO_BE_STREAM (p, LLCP_VERSION_VALUE);
UINT8_TO_BE_STREAM (p, LLCP_MIUX_TYPE);
UINT8_TO_BE_STREAM (p, LLCP_MIUX_LEN);
UINT16_TO_BE_STREAM (p, (llcp_cb.lcb.local_link_miu - LLCP_DEFAULT_MIU));
UINT8_TO_BE_STREAM (p, LLCP_WKS_TYPE);
UINT8_TO_BE_STREAM (p, LLCP_WKS_LEN);
UINT16_TO_BE_STREAM (p, llcp_cb.lcb.wks);
#endif
UINT8_TO_BE_STREAM (p, LLCP_LTO_TYPE);
UINT8_TO_BE_STREAM (p, LLCP_LTO_LEN);
UINT8_TO_BE_STREAM (p, (llcp_cb.lcb.local_lto/LLCP_LTO_UNIT));
UINT8_TO_BE_STREAM (p, LLCP_OPT_TYPE);
UINT8_TO_BE_STREAM (p, LLCP_OPT_LEN);
UINT8_TO_BE_STREAM (p, llcp_cb.lcb.local_opt);
*p_gen_bytes_len = (UINT8) (p - p_gen_bytes);
}
/*******************************************************************************
**
** Function LLCP_ActivateLink
**
** Description This function will activate LLCP link with LR, WT and Gen Bytes
** in activation NTF from NFCC.
**
** LLCP_LINK_ACTIVATION_COMPLETE_EVT will be returned through
** callback function if successful.
** Otherwise, LLCP_LINK_ACTIVATION_FAILED_EVT will be returned.
**
** Returns LLCP_STATUS_SUCCESS if success
**
*******************************************************************************/
tLLCP_STATUS LLCP_ActivateLink (tLLCP_ACTIVATE_CONFIG config,
tLLCP_LINK_CBACK *p_link_cback)
{
LLCP_TRACE_API1 ("LLCP_ActivateLink () link_state = %d", llcp_cb.lcb.link_state);
if ( (llcp_cb.lcb.link_state == LLCP_LINK_STATE_DEACTIVATED)
&&(p_link_cback) )
{
llcp_cb.lcb.p_link_cback = p_link_cback;
return (llcp_link_activate (&config));
}
else
return LLCP_STATUS_FAIL;
}
/*******************************************************************************
**
** Function LLCP_DeactivateLink
**
** Description Deactivate LLCP link
**
** LLCP_LINK_DEACTIVATED_EVT will be returned through callback
** when LLCP link is deactivated. Then NFC link may be deactivated.
**
** Returns LLCP_STATUS_SUCCESS if success
**
*******************************************************************************/
tLLCP_STATUS LLCP_DeactivateLink (void)
{
LLCP_TRACE_API1 ("LLCP_DeactivateLink () link_state = %d", llcp_cb.lcb.link_state);
if (llcp_cb.lcb.link_state != LLCP_LINK_STATE_DEACTIVATED)
{
llcp_link_deactivate (LLCP_LINK_LOCAL_INITIATED);
return LLCP_STATUS_SUCCESS;
}
else
return LLCP_STATUS_FAIL;
}
/*******************************************************************************
**
** Function LLCP_RegisterServer
**
** Description Register server and callback function
**
** reg_sap : Well-Known SAP except LM and SDP (0x02 - 0x0F)
** Advertized by SDP (0x10 - 0x1F)
** LLCP_INVALID_SAP, LLCP will allocate between 0x10 and 0x1F
** link_type : LLCP_LINK_TYPE_LOGICAL_DATA_LINK
** and/or LLCP_LINK_TYPE_DATA_LINK_CONNECTION
** p_service_name : Null-terminated string up to LLCP_MAX_SN_LEN
**
** Returns SAP between 0x02 and 0x1F, if success
** LLCP_INVALID_SAP, otherwise
**
*******************************************************************************/
UINT8 LLCP_RegisterServer (UINT8 reg_sap,
UINT8 link_type,
char *p_service_name,
tLLCP_APP_CBACK *p_app_cback)
{
UINT8 sap;
UINT16 length;
tLLCP_APP_CB *p_app_cb;
LLCP_TRACE_API3 ("LLCP_RegisterServer (): SAP:0x%x, link_type:0x%x, ServiceName:<%s>",
reg_sap, link_type, ((p_service_name == NULL) ? "" : p_service_name));
if (!p_app_cback)
{
LLCP_TRACE_ERROR0 ("LLCP_RegisterServer (): Callback must be provided");
return LLCP_INVALID_SAP;
}
else if ( ((link_type & LLCP_LINK_TYPE_LOGICAL_DATA_LINK) == 0x00)
&&((link_type & LLCP_LINK_TYPE_DATA_LINK_CONNECTION) == 0x00) )
{
LLCP_TRACE_ERROR1 ("LLCP_RegisterServer (): link type (0x%x) must be specified", link_type);
return LLCP_INVALID_SAP;
}
if (reg_sap == LLCP_INVALID_SAP)
{
/* allocate a SAP between 0x10 and 0x1F */
for (sap = 0; sap < LLCP_MAX_SERVER; sap++)
{
if (llcp_cb.server_cb[sap].p_app_cback == NULL)
{
p_app_cb = &llcp_cb.server_cb[sap];
reg_sap = LLCP_LOWER_BOUND_SDP_SAP + sap;
break;
}
}
if (reg_sap == LLCP_INVALID_SAP)
{
LLCP_TRACE_ERROR0 ("LLCP_RegisterServer (): out of resource");
return LLCP_INVALID_SAP;
}
}
else if (reg_sap == LLCP_SAP_LM)
{
LLCP_TRACE_ERROR1 ("LLCP_RegisterServer (): SAP (0x%x) is for link manager", reg_sap);
return LLCP_INVALID_SAP;
}
else if (reg_sap <= LLCP_UPPER_BOUND_WK_SAP)
{
if (reg_sap >= LLCP_MAX_WKS)
{
LLCP_TRACE_ERROR1 ("LLCP_RegisterServer (): out of resource for SAP (0x%x)", reg_sap);
return LLCP_INVALID_SAP;
}
else if (llcp_cb.wks_cb[reg_sap].p_app_cback)
{
LLCP_TRACE_ERROR1 ("LLCP_RegisterServer (): SAP (0x%x) is already registered", reg_sap);
return LLCP_INVALID_SAP;
}
else
{
p_app_cb = &llcp_cb.wks_cb[reg_sap];
}
}
else if (reg_sap <= LLCP_UPPER_BOUND_SDP_SAP)
{
if (reg_sap - LLCP_LOWER_BOUND_SDP_SAP >= LLCP_MAX_SERVER)
{
LLCP_TRACE_ERROR1 ("LLCP_RegisterServer (): out of resource for SAP (0x%x)", reg_sap);
return LLCP_INVALID_SAP;
}
else if (llcp_cb.server_cb[reg_sap - LLCP_LOWER_BOUND_SDP_SAP].p_app_cback)
{
LLCP_TRACE_ERROR1 ("LLCP_RegisterServer (): SAP (0x%x) is already registered", reg_sap);
return LLCP_INVALID_SAP;
}
else
{
p_app_cb = &llcp_cb.server_cb[reg_sap - LLCP_LOWER_BOUND_SDP_SAP];
}
}
else if (reg_sap >= LLCP_LOWER_BOUND_LOCAL_SAP)
{
LLCP_TRACE_ERROR2 ("LLCP_RegisterServer (): SAP (0x%x) must be less than 0x%x",
reg_sap, LLCP_LOWER_BOUND_LOCAL_SAP);
return LLCP_INVALID_SAP;
}
memset (p_app_cb, 0x00, sizeof (tLLCP_APP_CB));
if (p_service_name)
{
length = (UINT8) strlen (p_service_name);
if (length > LLCP_MAX_SN_LEN)
{
LLCP_TRACE_ERROR1 ("LLCP_RegisterServer (): Service Name (%d bytes) is too long", length);
return LLCP_INVALID_SAP;
}
p_app_cb->p_service_name = (UINT8 *) GKI_getbuf ((UINT16) (length + 1));
if (p_app_cb->p_service_name == NULL)
{
LLCP_TRACE_ERROR0 ("LLCP_RegisterServer (): Out of resource");
return LLCP_INVALID_SAP;
}
BCM_STRNCPY_S ((char *) p_app_cb->p_service_name, length + 1, (char *) p_service_name, length + 1);
p_app_cb->p_service_name[length] = 0;
}
else
p_app_cb->p_service_name = NULL;
p_app_cb->p_app_cback = p_app_cback;
p_app_cb->link_type = link_type;
if (reg_sap <= LLCP_UPPER_BOUND_WK_SAP)
{
llcp_cb.lcb.wks |= (1 << reg_sap);
}
LLCP_TRACE_DEBUG1 ("LLCP_RegisterServer (): Registered SAP = 0x%02X", reg_sap);
if (link_type & LLCP_LINK_TYPE_LOGICAL_DATA_LINK)
{
llcp_cb.num_logical_data_link++;
llcp_util_adjust_ll_congestion ();
}
return reg_sap;
}
/*******************************************************************************
**
** Function LLCP_RegisterClient
**
** Description Register client and callback function
**
** link_type : LLCP_LINK_TYPE_LOGICAL_DATA_LINK
** and/or LLCP_LINK_TYPE_DATA_LINK_CONNECTION
**
** Returns SAP between 0x20 and 0x3F, if success
** LLCP_INVALID_SAP, otherwise
**
*******************************************************************************/
UINT8 LLCP_RegisterClient (UINT8 link_type,
tLLCP_APP_CBACK *p_app_cback)
{
UINT8 reg_sap = LLCP_INVALID_SAP;
UINT8 sap;
tLLCP_APP_CB *p_app_cb;
LLCP_TRACE_API1 ("LLCP_RegisterClient (): link_type = 0x%x", link_type);
if (!p_app_cback)
{
LLCP_TRACE_ERROR0 ("LLCP_RegisterClient (): Callback must be provided");
return LLCP_INVALID_SAP;
}
else if ( ((link_type & LLCP_LINK_TYPE_LOGICAL_DATA_LINK) == 0x00)
&&((link_type & LLCP_LINK_TYPE_DATA_LINK_CONNECTION) == 0x00) )
{
LLCP_TRACE_ERROR1 ("LLCP_RegisterClient (): link type (0x%x) must be specified", link_type);
return LLCP_INVALID_SAP;
}
/* allocate a SAP between 0x20 and 0x3F */
for (sap = 0; sap < LLCP_MAX_CLIENT; sap++)
{
if (llcp_cb.client_cb[sap].p_app_cback == NULL)
{
p_app_cb = &llcp_cb.client_cb[sap];
memset (p_app_cb, 0x00, sizeof (tLLCP_APP_CB));
reg_sap = LLCP_LOWER_BOUND_LOCAL_SAP + sap;
break;
}
}
if (reg_sap == LLCP_INVALID_SAP)
{
LLCP_TRACE_ERROR0 ("LLCP_RegisterClient (): out of resource");
return LLCP_INVALID_SAP;
}
p_app_cb->p_app_cback = p_app_cback;
p_app_cb->p_service_name = NULL;
p_app_cb->link_type = link_type;
LLCP_TRACE_DEBUG1 ("LLCP_RegisterClient (): Registered SAP = 0x%02X", reg_sap);
if (link_type & LLCP_LINK_TYPE_LOGICAL_DATA_LINK)
{
llcp_cb.num_logical_data_link++;
llcp_util_adjust_ll_congestion ();
}
return reg_sap;
}
/*******************************************************************************
**
** Function LLCP_Deregister
**
** Description Deregister server or client
**
**
** Returns LLCP_STATUS_SUCCESS if success
**
*******************************************************************************/
tLLCP_STATUS LLCP_Deregister (UINT8 local_sap)
{
UINT8 idx;
tLLCP_APP_CB *p_app_cb;
LLCP_TRACE_API1 ("LLCP_Deregister () SAP:0x%x", local_sap);
p_app_cb = llcp_util_get_app_cb (local_sap);
if ((!p_app_cb) || (p_app_cb->p_app_cback == NULL))
{
LLCP_TRACE_ERROR1 ("LLCP_Deregister (): SAP (0x%x) is not registered", local_sap);
return LLCP_STATUS_FAIL;
}
if (p_app_cb->p_service_name)
GKI_freebuf (p_app_cb->p_service_name);
/* update WKS bit map */
if (local_sap <= LLCP_UPPER_BOUND_WK_SAP)
{
llcp_cb.lcb.wks &= ~ (1 << local_sap);
}
/* discard any received UI PDU on this SAP */
LLCP_FlushLogicalLinkRxData (local_sap);
llcp_cb.total_rx_ui_pdu = 0;
/* deallocate any data link connection on this SAP */
for (idx = 0; idx < LLCP_MAX_DATA_LINK; idx++)
{
if ( (llcp_cb.dlcb[idx].state != LLCP_DLC_STATE_IDLE)
&&(llcp_cb.dlcb[idx].local_sap == local_sap) )
{
llcp_util_deallocate_data_link (&llcp_cb.dlcb[idx]);
}
}
p_app_cb->p_app_cback = NULL;
/* discard any pending tx UI PDU from this SAP */
while (p_app_cb->ui_xmit_q.p_first)
{
GKI_freebuf (GKI_dequeue (&p_app_cb->ui_xmit_q));
llcp_cb.total_tx_ui_pdu--;
}
if (p_app_cb->link_type & LLCP_LINK_TYPE_LOGICAL_DATA_LINK)
{
llcp_cb.num_logical_data_link--;
llcp_util_adjust_ll_congestion ();
}
/* check rx congestion status */
llcp_util_check_rx_congested_status ();
return LLCP_STATUS_SUCCESS;
}
/*******************************************************************************
**
** Function LLCP_IsLogicalLinkCongested
**
** Description Check if logical link is congested
**
**
** Returns TRUE if congested
**
*******************************************************************************/
BOOLEAN LLCP_IsLogicalLinkCongested (UINT8 local_sap,
UINT8 num_pending_ui_pdu,
UINT8 total_pending_ui_pdu,
UINT8 total_pending_i_pdu)
{
tLLCP_APP_CB *p_app_cb;
LLCP_TRACE_API4 ("LLCP_IsLogicalLinkCongested () Local SAP:0x%x, pending = (%d, %d, %d)",
local_sap, num_pending_ui_pdu, total_pending_ui_pdu, total_pending_i_pdu);
p_app_cb = llcp_util_get_app_cb (local_sap);
if ( (llcp_cb.lcb.link_state != LLCP_LINK_STATE_ACTIVATED)
||(p_app_cb == NULL)
||(p_app_cb->p_app_cback == NULL)
||((p_app_cb->link_type & LLCP_LINK_TYPE_LOGICAL_DATA_LINK) == 0)
||(p_app_cb->is_ui_tx_congested) )
{
return (TRUE);
}
else if ( (num_pending_ui_pdu + p_app_cb->ui_xmit_q.count >= llcp_cb.ll_tx_congest_start)
||(total_pending_ui_pdu + llcp_cb.total_tx_ui_pdu >= llcp_cb.max_num_ll_tx_buff)
||(total_pending_ui_pdu + total_pending_i_pdu + llcp_cb.total_tx_ui_pdu + llcp_cb.total_tx_i_pdu >= llcp_cb.max_num_tx_buff) )
{
/* set flag so LLCP can notify uncongested status later */
p_app_cb->is_ui_tx_congested = TRUE;
return (TRUE);
}
return (FALSE);
}
/*******************************************************************************
**
** Function LLCP_SendUI
**
** Description Send connnectionless data to DSAP
**
**
** Returns LLCP_STATUS_SUCCESS if success
** LLCP_STATUS_CONGESTED if logical link is congested
** LLCP_STATUS_FAIL, otherwise
**
*******************************************************************************/
tLLCP_STATUS LLCP_SendUI (UINT8 ssap,
UINT8 dsap,
BT_HDR *p_buf)
{
tLLCP_STATUS status = LLCP_STATUS_FAIL;
tLLCP_APP_CB *p_app_cb;
LLCP_TRACE_API2 ("LLCP_SendUI () SSAP=0x%x, DSAP=0x%x", ssap, dsap);
p_app_cb = llcp_util_get_app_cb (ssap);
if ( (p_app_cb == NULL)
||(p_app_cb->p_app_cback == NULL) )
{
LLCP_TRACE_ERROR1 ("LLCP_SendUI (): SSAP (0x%x) is not registered", ssap);
}
else if ((p_app_cb->link_type & LLCP_LINK_TYPE_LOGICAL_DATA_LINK) == 0)
{
LLCP_TRACE_ERROR1 ("LLCP_SendUI (): Logical link on SSAP (0x%x) is not enabled", ssap);
}
else if (llcp_cb.lcb.link_state != LLCP_LINK_STATE_ACTIVATED)
{
LLCP_TRACE_ERROR0 ("LLCP_SendUI (): LLCP link is not activated");
}
else if ( (llcp_cb.lcb.peer_opt == LLCP_LSC_UNKNOWN)
||(llcp_cb.lcb.peer_opt & LLCP_LSC_1) )
{
if (p_buf->len <= llcp_cb.lcb.peer_miu)
{
if (p_buf->offset >= LLCP_MIN_OFFSET)
{
status = llcp_util_send_ui (ssap, dsap, p_app_cb, p_buf);
}
else
{
LLCP_TRACE_ERROR2 ("LLCP_SendUI (): offset (%d) must be %d at least",
p_buf->offset, LLCP_MIN_OFFSET );
}
}
else
{
LLCP_TRACE_ERROR0 ("LLCP_SendUI (): Data length shall not be bigger than peer's link MIU");
}
}
else
{
LLCP_TRACE_ERROR0 ("LLCP_SendUI (): Peer doesn't support connectionless link");
}
if (status == LLCP_STATUS_FAIL)
{
GKI_freebuf (p_buf);
}
return status;
}
/*******************************************************************************
**
** Function LLCP_ReadLogicalLinkData
**
** Description Read information of UI PDU for local SAP
**
** - Remote SAP who sent UI PDU is returned.
** - Information of UI PDU up to max_data_len is copied into p_data.
** - Information of next UI PDU is not concatenated.
** - Recommended max_data_len is link MIU of local device
**
** Returns TRUE if more information of UI PDU or more UI PDU in queue
**
*******************************************************************************/
BOOLEAN LLCP_ReadLogicalLinkData (UINT8 local_sap,
UINT32 max_data_len,
UINT8 *p_remote_sap,
UINT32 *p_data_len,
UINT8 *p_data)
{
tLLCP_APP_CB *p_app_cb;
BT_HDR *p_buf;
UINT8 *p_ui_pdu;
UINT16 pdu_hdr, ui_pdu_length;
LLCP_TRACE_API1 ("LLCP_ReadLogicalLinkData () Local SAP:0x%x", local_sap);
*p_data_len = 0;
p_app_cb = llcp_util_get_app_cb (local_sap);
/* if application is registered */
if ((p_app_cb) && (p_app_cb->p_app_cback))
{
/* if any UI PDU in rx queue */
if (p_app_cb->ui_rx_q.p_first)
{
p_buf = (BT_HDR *) p_app_cb->ui_rx_q.p_first;
p_ui_pdu = (UINT8*) (p_buf + 1) + p_buf->offset;
/* get length of UI PDU */
BE_STREAM_TO_UINT16 (ui_pdu_length, p_ui_pdu);
/* get remote SAP from LLCP header */
BE_STREAM_TO_UINT16 (pdu_hdr, p_ui_pdu);
*p_remote_sap = LLCP_GET_SSAP (pdu_hdr);
/* layer_specific has the offset to read within UI PDU */
p_ui_pdu += p_buf->layer_specific;
/* copy data up to max_data_len */
if (max_data_len >= (UINT32) (ui_pdu_length - LLCP_PDU_HEADER_SIZE - p_buf->layer_specific))
{
/* copy information without LLCP header */
*p_data_len = (UINT32) (ui_pdu_length - LLCP_PDU_HEADER_SIZE - p_buf->layer_specific);
/* move to next UI PDU if any */
p_buf->layer_specific = 0; /* reset offset to read from the first byte of next UI PDU */
p_buf->offset += LLCP_PDU_AGF_LEN_SIZE + ui_pdu_length;
p_buf->len -= LLCP_PDU_AGF_LEN_SIZE + ui_pdu_length;
}
else
{
*p_data_len = max_data_len;
/* update offset to read from remaining UI PDU next time */
p_buf->layer_specific += max_data_len;
}
memcpy (p_data, p_ui_pdu, *p_data_len);
/* if read all of UI PDU */
if (p_buf->len == 0)
{
GKI_dequeue (&p_app_cb->ui_rx_q);
GKI_freebuf (p_buf);
/* decrease number of received UI PDU in in all of ui_rx_q and check rx congestion status */
llcp_cb.total_rx_ui_pdu--;
llcp_util_check_rx_congested_status ();
}
}
/* if there is more UI PDU in rx queue */
if (p_app_cb->ui_rx_q.p_first)
{
return (TRUE);
}
else
{
return (FALSE);
}
}
else
{
LLCP_TRACE_ERROR1 ("LLCP_ReadLogicalLinkData (): Unregistered SAP:0x%x", local_sap);
return (FALSE);
}
}
/*******************************************************************************
**
** Function LLCP_FlushLogicalLinkRxData
**
** Description Discard received data in logical data link of local SAP
**
**
** Returns length of data flushed
**
*******************************************************************************/
UINT32 LLCP_FlushLogicalLinkRxData (UINT8 local_sap)
{
BT_HDR *p_buf;
UINT32 flushed_length = 0;
tLLCP_APP_CB *p_app_cb;
UINT8 *p_ui_pdu;
UINT16 ui_pdu_length;
LLCP_TRACE_API1 ("LLCP_FlushLogicalLinkRxData () Local SAP:0x%x", local_sap);
p_app_cb = llcp_util_get_app_cb (local_sap);
/* if application is registered */
if ((p_app_cb) && (p_app_cb->p_app_cback))
{
/* if any UI PDU in rx queue */
while (p_app_cb->ui_rx_q.p_first)
{
p_buf = (BT_HDR *) p_app_cb->ui_rx_q.p_first;
p_ui_pdu = (UINT8*) (p_buf + 1) + p_buf->offset;
/* get length of UI PDU */
BE_STREAM_TO_UINT16 (ui_pdu_length, p_ui_pdu);
flushed_length += (UINT32) (ui_pdu_length - LLCP_PDU_HEADER_SIZE - p_buf->layer_specific);
/* move to next UI PDU if any */
p_buf->layer_specific = 0; /* offset */
p_buf->offset += LLCP_PDU_AGF_LEN_SIZE + ui_pdu_length;
p_buf->len -= LLCP_PDU_AGF_LEN_SIZE + ui_pdu_length;
/* if read all of UI PDU */
if (p_buf->len == 0)
{
GKI_dequeue (&p_app_cb->ui_rx_q);
GKI_freebuf (p_buf);
llcp_cb.total_rx_ui_pdu--;
}
}
/* number of received UI PDU is decreased so check rx congestion status */
llcp_util_check_rx_congested_status ();
}
else
{
LLCP_TRACE_ERROR1 ("LLCP_FlushLogicalLinkRxData (): Unregistered SAP:0x%x", local_sap);
}
return (flushed_length);
}
/*******************************************************************************
**
** Function LLCP_ConnectReq
**
** Description Create data link connection between registered SAP and DSAP
** in peer LLCP,
**
**
** Returns LLCP_STATUS_SUCCESS if success
** LLCP_STATUS_FAIL, otherwise
**
*******************************************************************************/
tLLCP_STATUS LLCP_ConnectReq (UINT8 reg_sap,
UINT8 dsap,
tLLCP_CONNECTION_PARAMS *p_params)
{
tLLCP_DLCB *p_dlcb;
tLLCP_STATUS status;
tLLCP_APP_CB *p_app_cb;
tLLCP_CONNECTION_PARAMS params;
LLCP_TRACE_API2 ("LLCP_ConnectReq () reg_sap=0x%x, DSAP=0x%x", reg_sap, dsap);
if ( (llcp_cb.lcb.peer_opt != LLCP_LSC_UNKNOWN)
&&((llcp_cb.lcb.peer_opt & LLCP_LSC_2) == 0) )
{
LLCP_TRACE_ERROR0 ("LLCP_ConnectReq (): Peer doesn't support connection-oriented link");
return LLCP_STATUS_FAIL;
}
if (!p_params)
{
params.miu = LLCP_DEFAULT_MIU;
params.rw = LLCP_DEFAULT_RW;
params.sn[0] = 0;
p_params = &params;
}
p_app_cb = llcp_util_get_app_cb (reg_sap);
/* if application is registered */
if ( (p_app_cb == NULL)
||(p_app_cb->p_app_cback == NULL) )
{
LLCP_TRACE_ERROR1 ("LLCP_ConnectReq (): SSAP (0x%x) is not registered", reg_sap);
return LLCP_STATUS_FAIL;
}
if (dsap == LLCP_SAP_LM)
{
LLCP_TRACE_ERROR1 ("LLCP_ConnectReq (): DSAP (0x%x) must not be link manager SAP", dsap);
return LLCP_STATUS_FAIL;
}
if (dsap == LLCP_SAP_SDP)
{
if (strlen (p_params->sn) > LLCP_MAX_SN_LEN)
{
LLCP_TRACE_ERROR1 ("LLCP_ConnectReq (): Service Name (%d bytes) is too long",
strlen (p_params->sn));
return LLCP_STATUS_FAIL;
}
}
if ((p_params) && (p_params->miu > llcp_cb.lcb.local_link_miu))
{
LLCP_TRACE_ERROR0 ("LLCP_ConnectReq (): Data link MIU shall not be bigger than local link MIU");
return LLCP_STATUS_FAIL;
}
/* check if any pending connection request on this reg_sap */
p_dlcb = llcp_dlc_find_dlcb_by_sap (reg_sap, LLCP_INVALID_SAP);
if (p_dlcb)
{
/*
** Accepting LLCP may change SAP in CC, so we cannot find right data link connection
** if there is multiple pending connection request on the same local SAP.
*/
LLCP_TRACE_ERROR0 ("LLCP_ConnectReq (): There is pending connect request on this reg_sap");
return LLCP_STATUS_FAIL;
}
p_dlcb = llcp_util_allocate_data_link (reg_sap, dsap);
if (p_dlcb)
{
status = llcp_dlsm_execute (p_dlcb, LLCP_DLC_EVENT_API_CONNECT_REQ, p_params);
if (status != LLCP_STATUS_SUCCESS)
{
LLCP_TRACE_ERROR0 ("LLCP_ConnectReq (): Error in state machine");
llcp_util_deallocate_data_link (p_dlcb);
return LLCP_STATUS_FAIL;
}
}
else
{
return LLCP_STATUS_FAIL;
}
return LLCP_STATUS_SUCCESS;
}
/*******************************************************************************
**
** Function LLCP_ConnectCfm
**
** Description Accept connection request from peer LLCP
**
**
** Returns LLCP_STATUS_SUCCESS if success
** LLCP_STATUS_FAIL, otherwise
**
*******************************************************************************/
tLLCP_STATUS LLCP_ConnectCfm (UINT8 local_sap,
UINT8 remote_sap,
tLLCP_CONNECTION_PARAMS *p_params)
{
tLLCP_STATUS status;
tLLCP_DLCB *p_dlcb;
tLLCP_CONNECTION_PARAMS params;
LLCP_TRACE_API2 ("LLCP_ConnectCfm () Local SAP:0x%x, Remote SAP:0x%x)",
local_sap, remote_sap);
if (!p_params)
{
params.miu = LLCP_DEFAULT_MIU;
params.rw = LLCP_DEFAULT_RW;
params.sn[0] = 0;
p_params = &params;
}
if (p_params->miu > llcp_cb.lcb.local_link_miu)
{
LLCP_TRACE_ERROR0 ("LLCP_ConnectCfm (): Data link MIU shall not be bigger than local link MIU");
return LLCP_STATUS_FAIL;
}
p_dlcb = llcp_dlc_find_dlcb_by_sap (local_sap, remote_sap);
if (p_dlcb)
{
status = llcp_dlsm_execute (p_dlcb, LLCP_DLC_EVENT_API_CONNECT_CFM, p_params);
}
else
{
LLCP_TRACE_ERROR0 ("LLCP_ConnectCfm (): No data link");
status = LLCP_STATUS_FAIL;
}
return status;
}
/*******************************************************************************
**
** Function LLCP_ConnectReject
**
** Description Reject connection request from peer LLCP
**
** reason : LLCP_SAP_DM_REASON_APP_REJECTED
** LLCP_SAP_DM_REASON_PERM_REJECT_THIS
** LLCP_SAP_DM_REASON_PERM_REJECT_ANY
** LLCP_SAP_DM_REASON_TEMP_REJECT_THIS
** LLCP_SAP_DM_REASON_TEMP_REJECT_ANY
**
** Returns LLCP_STATUS_SUCCESS if success
** LLCP_STATUS_FAIL, otherwise
**
*******************************************************************************/
tLLCP_STATUS LLCP_ConnectReject (UINT8 local_sap,
UINT8 remote_sap,
UINT8 reason)
{
tLLCP_STATUS status;
tLLCP_DLCB *p_dlcb;
LLCP_TRACE_API3 ("LLCP_ConnectReject () Local SAP:0x%x, Remote SAP:0x%x, reason:0x%x",
local_sap, remote_sap, reason);
p_dlcb = llcp_dlc_find_dlcb_by_sap (local_sap, remote_sap);
if (p_dlcb)
{
status = llcp_dlsm_execute (p_dlcb, LLCP_DLC_EVENT_API_CONNECT_REJECT, &reason);
llcp_util_deallocate_data_link (p_dlcb);
}
else
{
LLCP_TRACE_ERROR0 ("LLCP_ConnectReject (): No data link");
status = LLCP_STATUS_FAIL;
}
return status;
}
/*******************************************************************************
**
** Function LLCP_IsDataLinkCongested
**
** Description Check if data link connection is congested
**
**
** Returns TRUE if congested
**
*******************************************************************************/
BOOLEAN LLCP_IsDataLinkCongested (UINT8 local_sap,
UINT8 remote_sap,
UINT8 num_pending_i_pdu,
UINT8 total_pending_ui_pdu,
UINT8 total_pending_i_pdu)
{
tLLCP_DLCB *p_dlcb;
LLCP_TRACE_API5 ("LLCP_IsDataLinkCongested () Local SAP:0x%x, Remote SAP:0x%x, pending = (%d, %d, %d)",
local_sap, remote_sap, num_pending_i_pdu, total_pending_ui_pdu, total_pending_i_pdu);
p_dlcb = llcp_dlc_find_dlcb_by_sap (local_sap, remote_sap);
if (p_dlcb)
{
if ( (p_dlcb->is_tx_congested)
||(p_dlcb->remote_busy) )
{
return (TRUE);
}
else if ( (num_pending_i_pdu + p_dlcb->i_xmit_q.count >= p_dlcb->remote_rw)
||(total_pending_ui_pdu + total_pending_i_pdu + llcp_cb.total_tx_ui_pdu + llcp_cb.total_tx_i_pdu >= llcp_cb.max_num_tx_buff) )
{
/* set flag so LLCP can notify uncongested status later */
p_dlcb->is_tx_congested = TRUE;
return (TRUE);
}
return (FALSE);
}
return (TRUE);
}
/*******************************************************************************
**
** Function LLCP_SendData
**
** Description Send connection-oriented data
**
**
** Returns LLCP_STATUS_SUCCESS if success
** LLCP_STATUS_CONGESTED if data link is congested
**
*******************************************************************************/
tLLCP_STATUS LLCP_SendData (UINT8 local_sap,
UINT8 remote_sap,
BT_HDR *p_buf)
{
tLLCP_STATUS status = LLCP_STATUS_FAIL;
tLLCP_DLCB *p_dlcb;
LLCP_TRACE_API2 ("LLCP_SendData () Local SAP:0x%x, Remote SAP:0x%x",
local_sap, remote_sap);
p_dlcb = llcp_dlc_find_dlcb_by_sap (local_sap, remote_sap);
if (p_dlcb)
{
if (p_dlcb->remote_miu >= p_buf->len)
{
if (p_buf->offset >= LLCP_MIN_OFFSET)
{
status = llcp_dlsm_execute (p_dlcb, LLCP_DLC_EVENT_API_DATA_REQ, p_buf);
}
else
{
LLCP_TRACE_ERROR2 ("LLCP_SendData (): offset (%d) must be %d at least",
p_buf->offset, LLCP_MIN_OFFSET );
}
}
else
{
LLCP_TRACE_ERROR2 ("LLCP_SendData (): Information (%d bytes) cannot be more than peer MIU (%d bytes)",
p_buf->len, p_dlcb->remote_miu);
}
}
else
{
LLCP_TRACE_ERROR0 ("LLCP_SendData (): No data link");
}
if (status == LLCP_STATUS_FAIL)
{
GKI_freebuf (p_buf);
}
return status;
}
/*******************************************************************************
**
** Function LLCP_ReadDataLinkData
**
** Description Read information of I PDU for data link connection
**
** - Information of I PDU up to max_data_len is copied into p_data.
** - Information of next I PDU is not concatenated.
** - Recommended max_data_len is data link connection MIU of local
** end point
**
** Returns TRUE if more data in queue
**
*******************************************************************************/
BOOLEAN LLCP_ReadDataLinkData (UINT8 local_sap,
UINT8 remote_sap,
UINT32 max_data_len,
UINT32 *p_data_len,
UINT8 *p_data)
{
tLLCP_DLCB *p_dlcb;
BT_HDR *p_buf;
UINT8 *p_i_pdu;
UINT16 i_pdu_length;
LLCP_TRACE_API2 ("LLCP_ReadDataLinkData () Local SAP:0x%x, Remote SAP:0x%x",
local_sap, remote_sap);
p_dlcb = llcp_dlc_find_dlcb_by_sap (local_sap, remote_sap);
*p_data_len = 0;
if (p_dlcb)
{
/* if any I PDU in rx queue */
if (p_dlcb->i_rx_q.p_first)
{
p_buf = (BT_HDR *) p_dlcb->i_rx_q.p_first;
p_i_pdu = (UINT8*) (p_buf + 1) + p_buf->offset;
/* get length of I PDU */
BE_STREAM_TO_UINT16 (i_pdu_length, p_i_pdu);
/* layer_specific has the offset to read within I PDU */
p_i_pdu += p_buf->layer_specific;
/* copy data up to max_data_len */
if (max_data_len >= (UINT32) (i_pdu_length - p_buf->layer_specific))
{
/* copy information */
*p_data_len = (UINT32) (i_pdu_length - p_buf->layer_specific);
/* move to next I PDU if any */
p_buf->layer_specific = 0; /* reset offset to read from the first byte of next I PDU */
p_buf->offset += LLCP_PDU_AGF_LEN_SIZE + i_pdu_length;
p_buf->len -= LLCP_PDU_AGF_LEN_SIZE + i_pdu_length;
}
else
{
*p_data_len = max_data_len;
/* update offset to read from remaining I PDU next time */
p_buf->layer_specific += max_data_len;
}
memcpy (p_data, p_i_pdu, *p_data_len);
if (p_buf->layer_specific == 0)
{
p_dlcb->num_rx_i_pdu--;
}
/* if read all of I PDU */
if (p_buf->len == 0)
{
GKI_dequeue (&p_dlcb->i_rx_q);
GKI_freebuf (p_buf);
/* decrease number of received I PDU in in all of ui_rx_q and check rx congestion status */
llcp_cb.total_rx_i_pdu--;
llcp_util_check_rx_congested_status ();
}
}
/* if getting out of rx congestion */
if ( (!p_dlcb->local_busy)
&&(p_dlcb->is_rx_congested)
&&(p_dlcb->num_rx_i_pdu <= p_dlcb->rx_congest_threshold / 2) )
{
/* send RR */
p_dlcb->is_rx_congested = FALSE;
p_dlcb->flags |= LLCP_DATA_LINK_FLAG_PENDING_RR_RNR;
}
/* if there is more I PDU in rx queue */
if (p_dlcb->i_rx_q.p_first)
{
return (TRUE);
}
else
{
return (FALSE);
}
}
else
{
LLCP_TRACE_ERROR0 ("LLCP_ReadDataLinkData (): No data link connection");
return (FALSE);
}
}
/*******************************************************************************
**
** Function LLCP_FlushDataLinkRxData
**
** Description Discard received data in data link connection
**
**
** Returns length of rx data flushed
**
*******************************************************************************/
UINT32 LLCP_FlushDataLinkRxData (UINT8 local_sap,
UINT8 remote_sap)
{
tLLCP_DLCB *p_dlcb;
BT_HDR *p_buf;
UINT32 flushed_length = 0;
UINT8 *p_i_pdu;
UINT16 i_pdu_length;
LLCP_TRACE_API2 ("LLCP_FlushDataLinkRxData () Local SAP:0x%x, Remote SAP:0x%x",
local_sap, remote_sap);
p_dlcb = llcp_dlc_find_dlcb_by_sap (local_sap, remote_sap);
if (p_dlcb)
{
/* if any I PDU in rx queue */
while (p_dlcb->i_rx_q.p_first)
{
p_buf = (BT_HDR *) p_dlcb->i_rx_q.p_first;
p_i_pdu = (UINT8*) (p_buf + 1) + p_buf->offset;
/* get length of I PDU */
BE_STREAM_TO_UINT16 (i_pdu_length, p_i_pdu);
flushed_length += (UINT32) (i_pdu_length - p_buf->layer_specific);
/* move to next I PDU if any */
p_buf->layer_specific = 0; /* offset */
p_buf->offset += LLCP_PDU_AGF_LEN_SIZE + i_pdu_length;
p_buf->len -= LLCP_PDU_AGF_LEN_SIZE + i_pdu_length;
/* if read all of I PDU */
if (p_buf->len == 0)
{
GKI_dequeue (&p_dlcb->i_rx_q);
GKI_freebuf (p_buf);
llcp_cb.total_rx_i_pdu--;
}
}
p_dlcb->num_rx_i_pdu = 0;
/* if getting out of rx congestion */
if ( (!p_dlcb->local_busy)
&&(p_dlcb->is_rx_congested) )
{
/* send RR */
p_dlcb->is_rx_congested = FALSE;
p_dlcb->flags |= LLCP_DATA_LINK_FLAG_PENDING_RR_RNR;
}
/* number of received I PDU is decreased so check rx congestion status */
llcp_util_check_rx_congested_status ();
}
else
{
LLCP_TRACE_ERROR0 ("LLCP_FlushDataLinkRxData (): No data link connection");
}
return (flushed_length);
}
/*******************************************************************************
**
** Function LLCP_DisconnectReq
**
** Description Disconnect data link
** discard any pending data if flush is set to TRUE
**
** Returns LLCP_STATUS_SUCCESS if success
**
*******************************************************************************/
tLLCP_STATUS LLCP_DisconnectReq (UINT8 local_sap,
UINT8 remote_sap,
BOOLEAN flush)
{
tLLCP_STATUS status;
tLLCP_DLCB *p_dlcb;
LLCP_TRACE_API3 ("LLCP_DisconnectReq () Local SAP:0x%x, Remote SAP:0x%x, flush=%d",
local_sap, remote_sap, flush);
p_dlcb = llcp_dlc_find_dlcb_by_sap (local_sap, remote_sap);
if (p_dlcb)
{
status = llcp_dlsm_execute (p_dlcb, LLCP_DLC_EVENT_API_DISCONNECT_REQ, &flush);
}
else
{
LLCP_TRACE_ERROR0 ("LLCP_DisconnectReq (): No data link");
status = LLCP_STATUS_FAIL;
}
return status;
}
/*******************************************************************************
**
** Function LLCP_SetTxCompleteNtf
**
** Description This function is called to get LLCP_SERVICE_TX_COMPLETE
** when Tx queue is empty and all PDU is acked.
** This is one time event, so upper layer shall call this function
** again to get next LLCP_SERVICE_TX_COMPLETE.
**
** Returns LLCP_STATUS_SUCCESS if success
**
*******************************************************************************/
tLLCP_STATUS LLCP_SetTxCompleteNtf (UINT8 local_sap,
UINT8 remote_sap)
{
tLLCP_STATUS status;
tLLCP_DLCB *p_dlcb;
LLCP_TRACE_API2 ("LLCP_SetTxCompleteNtf () Local SAP:0x%x, Remote SAP:0x%x",
local_sap, remote_sap);
p_dlcb = llcp_dlc_find_dlcb_by_sap (local_sap, remote_sap);
if (p_dlcb)
{
/* set flag to notify upper later when tx complete */
p_dlcb->flags |= LLCP_DATA_LINK_FLAG_NOTIFY_TX_DONE;
status = LLCP_STATUS_SUCCESS;
}
else
{
LLCP_TRACE_ERROR0 ("LLCP_SetTxCompleteNtf (): No data link");
status = LLCP_STATUS_FAIL;
}
return status;
}
/*******************************************************************************
**
** Function LLCP_SetLocalBusyStatus
**
** Description Set local busy status
**
**
** Returns LLCP_STATUS_SUCCESS if success
**
*******************************************************************************/
tLLCP_STATUS LLCP_SetLocalBusyStatus (UINT8 local_sap,
UINT8 remote_sap,
BOOLEAN is_busy)
{
tLLCP_STATUS status;
tLLCP_DLCB *p_dlcb;
LLCP_TRACE_API2 ("LLCP_SetLocalBusyStatus () Local SAP:0x%x, is_busy=%d",
local_sap, is_busy);
p_dlcb = llcp_dlc_find_dlcb_by_sap (local_sap, remote_sap);
if (p_dlcb)
{
if (p_dlcb->local_busy != is_busy)
{
p_dlcb->local_busy = is_busy;
/* send RR or RNR with valid sequence */
p_dlcb->flags |= LLCP_DATA_LINK_FLAG_PENDING_RR_RNR;
if (is_busy == FALSE)
{
if (p_dlcb->i_rx_q.count)
{
llcp_dlsm_execute (p_dlcb, LLCP_DLC_EVENT_PEER_DATA_IND, NULL);
}
}
}
status = LLCP_STATUS_SUCCESS;
}
else
{
LLCP_TRACE_ERROR0 ("LLCP_SetLocalBusyStatus (): No data link");
status = LLCP_STATUS_FAIL;
}
return status;
}
/*******************************************************************************
**
** Function LLCP_GetRemoteWKS
**
** Description Return well-known service bitmap of connected device
**
**
** Returns WKS bitmap if success
**
*******************************************************************************/
UINT16 LLCP_GetRemoteWKS (void)
{
LLCP_TRACE_API1 ("LLCP_GetRemoteWKS () WKS:0x%04x",
(llcp_cb.lcb.link_state == LLCP_LINK_STATE_ACTIVATED) ? llcp_cb.lcb.peer_wks :0);
if (llcp_cb.lcb.link_state == LLCP_LINK_STATE_ACTIVATED)
return (llcp_cb.lcb.peer_wks);
else
return (0);
}
/*******************************************************************************
**
** Function LLCP_GetRemoteLSC
**
** Description Return link service class of connected device
**
**
** Returns link service class
**
*******************************************************************************/
UINT8 LLCP_GetRemoteLSC (void)
{
LLCP_TRACE_API1 ("LLCP_GetRemoteLSC () LSC:0x%x",
(llcp_cb.lcb.link_state == LLCP_LINK_STATE_ACTIVATED)
? llcp_cb.lcb.peer_opt & (LLCP_LSC_1 | LLCP_LSC_2) :0);
if (llcp_cb.lcb.link_state == LLCP_LINK_STATE_ACTIVATED)
return (llcp_cb.lcb.peer_opt & (LLCP_LSC_1 | LLCP_LSC_2));
else
return (LLCP_LSC_UNKNOWN);
}
/*******************************************************************************
**
** Function LLCP_GetRemoteVersion
**
** Description Return LLCP version of connected device
**
**
** Returns LLCP version
**
*******************************************************************************/
UINT8 LLCP_GetRemoteVersion (void)
{
LLCP_TRACE_API1 ("LLCP_GetRemoteVersion () Version: 0x%x",
(llcp_cb.lcb.link_state == LLCP_LINK_STATE_ACTIVATED)
? llcp_cb.lcb.peer_version : 0);
if (llcp_cb.lcb.link_state == LLCP_LINK_STATE_ACTIVATED)
return (llcp_cb.lcb.peer_version);
else
return 0;
}
/*******************************************************************************
**
** Function LLCP_GetLinkMIU
**
** Description Return local and remote link MIU
**
**
** Returns None
**
*******************************************************************************/
LLCP_API void LLCP_GetLinkMIU (UINT16 *p_local_link_miu,
UINT16 *p_remote_link_miu)
{
LLCP_TRACE_API0 ("LLCP_GetLinkMIU ()");
if (llcp_cb.lcb.link_state == LLCP_LINK_STATE_ACTIVATED)
{
*p_local_link_miu = llcp_cb.lcb.local_link_miu;
*p_remote_link_miu = llcp_cb.lcb.effective_miu;
}
else
{
*p_local_link_miu = 0;
*p_remote_link_miu = 0;
}
LLCP_TRACE_DEBUG2 ("LLCP_GetLinkMIU (): local_link_miu = %d, remote_link_miu = %d",
*p_local_link_miu, *p_remote_link_miu);
}
/*******************************************************************************
**
** Function LLCP_DiscoverService
**
** Description Return SAP of service name in connected device through callback
**
**
** Returns LLCP_STATUS_SUCCESS if success
**
*******************************************************************************/
tLLCP_STATUS LLCP_DiscoverService (char *p_name,
tLLCP_SDP_CBACK *p_cback,
UINT8 *p_tid)
{
tLLCP_STATUS status;
UINT8 i;
LLCP_TRACE_API1 ("LLCP_DiscoverService () Service Name:%s",
p_name);
if (llcp_cb.lcb.link_state != LLCP_LINK_STATE_ACTIVATED)
{
LLCP_TRACE_ERROR0 ("LLCP_DiscoverService (): Link is not activated");
return LLCP_STATUS_FAIL;
}
if (!p_cback)
{
LLCP_TRACE_ERROR0 ("LLCP_DiscoverService (): Callback must be provided.");
return LLCP_STATUS_FAIL;
}
/* if peer version is less than V1.1 then SNL is not supported */
if ((llcp_cb.lcb.agreed_major_version == 0x01) && (llcp_cb.lcb.agreed_minor_version < 0x01))
{
LLCP_TRACE_ERROR0 ("LLCP_DiscoverService (): Peer doesn't support SNL");
return LLCP_STATUS_FAIL;
}
for (i = 0; i < LLCP_MAX_SDP_TRANSAC; i++)
{
if (!llcp_cb.sdp_cb.transac[i].p_cback)
{
llcp_cb.sdp_cb.transac[i].tid = llcp_cb.sdp_cb.next_tid;
llcp_cb.sdp_cb.next_tid++;
llcp_cb.sdp_cb.transac[i].p_cback = p_cback;
status = llcp_sdp_send_sdreq (llcp_cb.sdp_cb.transac[i].tid, p_name);
if (status == LLCP_STATUS_FAIL)
{
llcp_cb.sdp_cb.transac[i].p_cback = NULL;
}
*p_tid = llcp_cb.sdp_cb.transac[i].tid;
return (status);
}
}
LLCP_TRACE_ERROR0 ("LLCP_DiscoverService (): Out of resource");
return LLCP_STATUS_FAIL;
}