436 lines
14 KiB
C
Executable file
436 lines
14 KiB
C
Executable file
/******************************************************************************
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*
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* Copyright (C) 2003-2012 Broadcom Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************/
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/******************************************************************************
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*
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* This AVCTP module interfaces to L2CAP
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*
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******************************************************************************/
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#include <string.h>
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#include "bt_types.h"
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#include "bt_target.h"
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#include "bt_utils.h"
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#include "avct_api.h"
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#include "avct_int.h"
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#include "l2c_api.h"
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#include "l2cdefs.h"
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/* Configuration flags. */
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#define AVCT_L2C_CFG_IND_DONE (1<<0)
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#define AVCT_L2C_CFG_CFM_DONE (1<<1)
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/* callback function declarations */
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void avct_l2c_connect_ind_cback(BD_ADDR bd_addr, UINT16 lcid, UINT16 psm, UINT8 id);
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void avct_l2c_connect_cfm_cback(UINT16 lcid, UINT16 result);
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void avct_l2c_config_cfm_cback(UINT16 lcid, tL2CAP_CFG_INFO *p_cfg);
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void avct_l2c_config_ind_cback(UINT16 lcid, tL2CAP_CFG_INFO *p_cfg);
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void avct_l2c_disconnect_ind_cback(UINT16 lcid, BOOLEAN ack_needed);
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void avct_l2c_disconnect_cfm_cback(UINT16 lcid, UINT16 result);
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void avct_l2c_congestion_ind_cback(UINT16 lcid, BOOLEAN is_congested);
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void avct_l2c_data_ind_cback(UINT16 lcid, BT_HDR *p_buf);
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/* L2CAP callback function structure */
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const tL2CAP_APPL_INFO avct_l2c_appl = {
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avct_l2c_connect_ind_cback,
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avct_l2c_connect_cfm_cback,
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NULL,
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avct_l2c_config_ind_cback,
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avct_l2c_config_cfm_cback,
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avct_l2c_disconnect_ind_cback,
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avct_l2c_disconnect_cfm_cback,
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NULL,
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avct_l2c_data_ind_cback,
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avct_l2c_congestion_ind_cback,
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NULL /* tL2CA_TX_COMPLETE_CB */
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};
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/*******************************************************************************
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**
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** Function avct_l2c_is_passive
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**
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** Description check is the CCB associated with the given LCB was created
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** as passive
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**
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** Returns TRUE, if the given LCB is created as AVCT_PASSIVE
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**
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*******************************************************************************/
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static BOOLEAN avct_l2c_is_passive (tAVCT_LCB *p_lcb)
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{
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BOOLEAN is_passive = FALSE;
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tAVCT_CCB *p_ccb = &avct_cb.ccb[0];
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int i;
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for (i = 0; i < AVCT_NUM_CONN; i++, p_ccb++)
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{
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if (p_ccb->allocated && (p_ccb->p_lcb == p_lcb))
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{
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AVCT_TRACE_DEBUG("avct_l2c_is_ct control:x%x", p_ccb->cc.control);
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if (p_ccb->cc.control & AVCT_PASSIVE)
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{
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is_passive = TRUE;
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break;
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}
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}
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}
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return is_passive;
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}
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/*******************************************************************************
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**
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** Function avct_l2c_connect_ind_cback
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**
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** Description This is the L2CAP connect indication callback function.
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**
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**
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** Returns void
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**
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*******************************************************************************/
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void avct_l2c_connect_ind_cback(BD_ADDR bd_addr, UINT16 lcid, UINT16 psm, UINT8 id)
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{
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tAVCT_LCB *p_lcb;
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UINT16 result = L2CAP_CONN_OK;
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tL2CAP_CFG_INFO cfg;
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UNUSED(psm);
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/* do we already have a channel for this peer? */
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if ((p_lcb = avct_lcb_by_bd(bd_addr)) == NULL)
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{
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/* no, allocate lcb */
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if ((p_lcb = avct_lcb_alloc(bd_addr)) == NULL)
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{
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/* no ccb available, reject L2CAP connection */
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result = L2CAP_CONN_NO_RESOURCES;
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}
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}
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/* else we already have a channel for this peer */
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else
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{
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if (!avct_l2c_is_passive (p_lcb) || (p_lcb->ch_state == AVCT_CH_OPEN))
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{
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/* this LCB included CT role - reject */
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result = L2CAP_CONN_NO_RESOURCES;
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}
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else
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{
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/* TG role only - accept the connection from CT. move the channel ID to the conflict list */
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p_lcb->conflict_lcid = p_lcb->ch_lcid;
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AVCT_TRACE_DEBUG("avct_l2c_connect_ind_cback conflict_lcid:0x%x", p_lcb->conflict_lcid);
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}
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}
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if(p_lcb)
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{
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AVCT_TRACE_DEBUG("avct_l2c_connect_ind_cback: 0x%x, res: %d, ch_state: %d",
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lcid, result, p_lcb->ch_state);
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}
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/* Send L2CAP connect rsp */
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L2CA_ConnectRsp(bd_addr, id, lcid, result, 0);
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/* if result ok, proceed with connection */
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if (result == L2CAP_CONN_OK)
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{
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/* store LCID */
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p_lcb->ch_lcid = lcid;
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/* transition to configuration state */
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p_lcb->ch_state = AVCT_CH_CFG;
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/* Send L2CAP config req */
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memset(&cfg, 0, sizeof(tL2CAP_CFG_INFO));
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cfg.mtu_present = TRUE;
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cfg.mtu = avct_cb.mtu;
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L2CA_ConfigReq(lcid, &cfg);
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AVCT_TRACE_DEBUG("avct_l2c snd Cfg Req");
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}
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#if (BT_USE_TRACES == TRUE)
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if(p_lcb)
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AVCT_TRACE_DEBUG("ch_state cni: %d ", p_lcb->ch_state);
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#endif
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}
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/*******************************************************************************
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**
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** Function avct_l2c_connect_cfm_cback
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**
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** Description This is the L2CAP connect confirm callback function.
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**
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**
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** Returns void
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**
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*******************************************************************************/
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void avct_l2c_connect_cfm_cback(UINT16 lcid, UINT16 result)
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{
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tAVCT_LCB *p_lcb;
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tL2CAP_CFG_INFO cfg;
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/* look up lcb for this channel */
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if ((p_lcb = avct_lcb_by_lcid(lcid)) != NULL)
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{
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AVCT_TRACE_DEBUG("avct_l2c_connect_cfm_cback lcid:0x%x result: %d ch_state: %d, conflict_lcid:0x%x",
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lcid, result, p_lcb->ch_state, p_lcb->conflict_lcid);
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/* if in correct state */
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if (p_lcb->ch_state == AVCT_CH_CONN)
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{
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/* if result successful */
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if (result == L2CAP_CONN_OK)
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{
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/* set channel state */
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p_lcb->ch_state = AVCT_CH_CFG;
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/* Send L2CAP config req */
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memset(&cfg, 0, sizeof(tL2CAP_CFG_INFO));
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cfg.mtu_present = TRUE;
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cfg.mtu = avct_cb.mtu;
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L2CA_ConfigReq(lcid, &cfg);
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AVCT_TRACE_DEBUG("avct_l2c snd Cfg Req");
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}
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/* else failure */
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else
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{
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AVCT_TRACE_DEBUG("avct_l2c_connect_cfm_cback conflict_lcid:0x%x", p_lcb->conflict_lcid);
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if (p_lcb->conflict_lcid == lcid)
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p_lcb->conflict_lcid = 0;
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else
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avct_lcb_event(p_lcb, AVCT_LCB_LL_CLOSE_EVT, (tAVCT_LCB_EVT *) &result);
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}
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}
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else if (p_lcb->conflict_lcid == lcid)
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{
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/* we must be in AVCT_CH_CFG state for the ch_lcid channel */
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AVCT_TRACE_DEBUG("avct_l2c_connect_cfm_cback ch_state: %d, conflict_lcid:0x%x", p_lcb->ch_state, p_lcb->conflict_lcid);
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if (result == L2CAP_CONN_OK)
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{
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/* just in case the peer also accepts our connection - Send L2CAP disconnect req */
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L2CA_DisconnectReq(lcid);
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}
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p_lcb->conflict_lcid = 0;
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}
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AVCT_TRACE_DEBUG("ch_state cnc: %d ", p_lcb->ch_state);
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}
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}
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/*******************************************************************************
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**
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** Function avct_l2c_config_cfm_cback
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**
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** Description This is the L2CAP config confirm callback function.
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**
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**
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** Returns void
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**
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*******************************************************************************/
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void avct_l2c_config_cfm_cback(UINT16 lcid, tL2CAP_CFG_INFO *p_cfg)
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{
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tAVCT_LCB *p_lcb;
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/* look up lcb for this channel */
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if ((p_lcb = avct_lcb_by_lcid(lcid)) != NULL)
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{
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AVCT_TRACE_DEBUG("avct_l2c_config_cfm_cback: 0x%x, ch_state: %d, res: %d",
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lcid, p_lcb->ch_state, p_cfg->result);
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/* if in correct state */
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if (p_lcb->ch_state == AVCT_CH_CFG)
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{
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/* if result successful */
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if (p_cfg->result == L2CAP_CFG_OK)
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{
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/* update flags */
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p_lcb->ch_flags |= AVCT_L2C_CFG_CFM_DONE;
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/* if configuration complete */
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if (p_lcb->ch_flags & AVCT_L2C_CFG_IND_DONE)
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{
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p_lcb->ch_state = AVCT_CH_OPEN;
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avct_lcb_event(p_lcb, AVCT_LCB_LL_OPEN_EVT, NULL);
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}
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}
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/* else failure */
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else
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{
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AVCT_TRACE_DEBUG("ERROR avct_l2c_config_cfm_cback L2CA_DisconnectReq %d ", p_lcb->ch_state);
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/* store result value */
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p_lcb->ch_result = p_cfg->result;
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/* Send L2CAP disconnect req */
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L2CA_DisconnectReq(lcid);
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}
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}
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AVCT_TRACE_DEBUG("ch_state cfc: %d ", p_lcb->ch_state);
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}
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}
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/*******************************************************************************
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**
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** Function avct_l2c_config_ind_cback
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**
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** Description This is the L2CAP config indication callback function.
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**
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**
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** Returns void
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**
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*******************************************************************************/
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void avct_l2c_config_ind_cback(UINT16 lcid, tL2CAP_CFG_INFO *p_cfg)
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{
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tAVCT_LCB *p_lcb;
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/* look up lcb for this channel */
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if ((p_lcb = avct_lcb_by_lcid(lcid)) != NULL)
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{
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AVCT_TRACE_DEBUG("avct_l2c_config_ind_cback: 0x%x, ch_state: %d", lcid, p_lcb->ch_state);
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/* store the mtu in tbl */
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if (p_cfg->mtu_present)
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{
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p_lcb->peer_mtu = p_cfg->mtu;
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}
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else
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{
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p_lcb->peer_mtu = L2CAP_DEFAULT_MTU;
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}
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/* send L2CAP configure response */
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memset(p_cfg, 0, sizeof(tL2CAP_CFG_INFO));
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p_cfg->result = L2CAP_CFG_OK;
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L2CA_ConfigRsp(lcid, p_cfg);
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/* if first config ind */
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if ((p_lcb->ch_flags & AVCT_L2C_CFG_IND_DONE) == 0)
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{
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/* update flags */
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p_lcb->ch_flags |= AVCT_L2C_CFG_IND_DONE;
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/* if configuration complete */
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if (p_lcb->ch_flags & AVCT_L2C_CFG_CFM_DONE)
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{
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p_lcb->ch_state = AVCT_CH_OPEN;
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avct_lcb_event(p_lcb, AVCT_LCB_LL_OPEN_EVT, NULL);
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}
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}
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AVCT_TRACE_DEBUG("ch_state cfi: %d ", p_lcb->ch_state);
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}
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}
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/*******************************************************************************
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**
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** Function avct_l2c_disconnect_ind_cback
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**
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** Description This is the L2CAP disconnect indication callback function.
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**
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**
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** Returns void
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**
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*******************************************************************************/
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void avct_l2c_disconnect_ind_cback(UINT16 lcid, BOOLEAN ack_needed)
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{
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tAVCT_LCB *p_lcb;
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UINT16 result = AVCT_RESULT_FAIL;
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/* look up lcb for this channel */
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if ((p_lcb = avct_lcb_by_lcid(lcid)) != NULL)
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{
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AVCT_TRACE_DEBUG("avct_l2c_disconnect_ind_cback: 0x%x, ch_state: %d", lcid, p_lcb->ch_state);
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if (ack_needed)
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{
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/* send L2CAP disconnect response */
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L2CA_DisconnectRsp(lcid);
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}
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avct_lcb_event(p_lcb, AVCT_LCB_LL_CLOSE_EVT, (tAVCT_LCB_EVT *) &result);
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AVCT_TRACE_DEBUG("ch_state di: %d ", p_lcb->ch_state);
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}
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}
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/*******************************************************************************
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**
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** Function avct_l2c_disconnect_cfm_cback
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**
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** Description This is the L2CAP disconnect confirm callback function.
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**
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**
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** Returns void
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**
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*******************************************************************************/
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void avct_l2c_disconnect_cfm_cback(UINT16 lcid, UINT16 result)
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{
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tAVCT_LCB *p_lcb;
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UINT16 res;
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/* look up lcb for this channel */
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if ((p_lcb = avct_lcb_by_lcid(lcid)) != NULL)
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{
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AVCT_TRACE_DEBUG("avct_l2c_disconnect_cfm_cback: 0x%x, ch_state: %d, res: %d",
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lcid, p_lcb->ch_state, result);
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/* result value may be previously stored */
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res = (p_lcb->ch_result != 0) ? p_lcb->ch_result : result;
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p_lcb->ch_result = 0;
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avct_lcb_event(p_lcb, AVCT_LCB_LL_CLOSE_EVT, (tAVCT_LCB_EVT *) &res);
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AVCT_TRACE_DEBUG("ch_state dc: %d ", p_lcb->ch_state);
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}
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}
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/*******************************************************************************
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**
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** Function avct_l2c_congestion_ind_cback
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**
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** Description This is the L2CAP congestion indication callback function.
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**
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**
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** Returns void
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**
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*******************************************************************************/
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void avct_l2c_congestion_ind_cback(UINT16 lcid, BOOLEAN is_congested)
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{
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tAVCT_LCB *p_lcb;
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AVCT_TRACE_DEBUG("avct_l2c_congestion_ind_cback: 0x%x", lcid);
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/* look up lcb for this channel */
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if ((p_lcb = avct_lcb_by_lcid(lcid)) != NULL)
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{
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avct_lcb_event(p_lcb, AVCT_LCB_LL_CONG_EVT, (tAVCT_LCB_EVT *) &is_congested);
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}
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}
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/*******************************************************************************
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**
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** Function avct_l2c_data_ind_cback
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**
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** Description This is the L2CAP data indication callback function.
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**
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**
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** Returns void
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**
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*******************************************************************************/
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void avct_l2c_data_ind_cback(UINT16 lcid, BT_HDR *p_buf)
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{
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tAVCT_LCB *p_lcb;
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AVCT_TRACE_DEBUG("avct_l2c_data_ind_cback: 0x%x", lcid);
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/* look up lcb for this channel */
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if ((p_lcb = avct_lcb_by_lcid(lcid)) != NULL)
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{
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avct_lcb_event(p_lcb, AVCT_LCB_LL_MSG_EVT, (tAVCT_LCB_EVT *) &p_buf);
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}
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else /* prevent buffer leak */
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{
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AVCT_TRACE_WARNING("ERROR -> avct_l2c_data_ind_cback drop buffer");
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GKI_freebuf(p_buf);
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}
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}
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