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/******************************************************************************
*
* Copyright (C) 2009-2012 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.
*
******************************************************************************/
/*******************************************************************************
*
* Filename: btif_pan_internal.h
*
* Description: Bluetooth pan internal
*
******************************************************************************/
#ifndef BTIF_PAN_INTERNAL_H
#define BTIF_PAN_INTERNAL_H
#include "bt_types.h"
#include "btif_pan.h"
/*******************************************************************************
* Constants & Macros
******************************************************************************/
#define PAN_NAP_SERVICE_NAME "Android Network Access Point"
#define PANU_SERVICE_NAME "Android Network User"
#define TAP_IF_NAME "bt-pan"
#define TAP_MAX_PKT_WRITE_LEN 2000
#ifndef PAN_SECURITY
#define PAN_SECURITY \
(BTM_SEC_IN_AUTHENTICATE | BTM_SEC_OUT_AUTHENTICATE | BTM_SEC_IN_ENCRYPT | \
BTM_SEC_OUT_ENCRYPT)
#endif
#define PAN_STATE_UNKNOWN 0
#define PAN_STATE_OPEN 1
#define PAN_STATE_CLOSE 2
#ifndef PAN_ROLE_INACTIVE
#define PAN_ROLE_INACTIVE 0
#endif
/*******************************************************************************
* Type definitions and return values
******************************************************************************/
typedef struct eth_hdr {
RawAddress h_dest;
RawAddress h_src;
short h_proto;
} tETH_HDR;
typedef struct {
int handle;
int state;
uint16_t protocol;
RawAddress peer;
int local_role;
int remote_role;
RawAddress eth_addr;
} btpan_conn_t;
typedef struct {
int btl_if_handle;
int btl_if_handle_panu;
int tap_fd;
int enabled;
int open_count;
int flow; // 1: outbound data flow on; 0: outbound data flow off
btpan_conn_t conns[MAX_PAN_CONNS];
int congest_packet_size;
unsigned char congest_packet[1600]; // max ethernet packet size
} btpan_cb_t;
/*******************************************************************************
* Functions
******************************************************************************/
extern btpan_cb_t btpan_cb;
btpan_conn_t* btpan_new_conn(int handle, const RawAddress& addr, int local_role,
int peer_role);
btpan_conn_t* btpan_find_conn_addr(const RawAddress& addr);
btpan_conn_t* btpan_find_conn_handle(uint16_t handle);
void btpan_set_flow_control(bool enable);
int btpan_get_connected_count(void);
int btpan_tap_open(void);
void create_tap_read_thread(int tap_fd);
void destroy_tap_read_thread(void);
int btpan_tap_close(int tap_fd);
int btpan_tap_send(int tap_fd, const RawAddress& src, const RawAddress& dst,
uint16_t protocol, const char* buff, uint16_t size, bool ext,
bool forward);
static inline int is_empty_eth_addr(const RawAddress& addr) {
return addr == RawAddress::kEmpty;
}
static inline int is_valid_bt_eth_addr(const RawAddress& addr) {
if (is_empty_eth_addr(addr)) return 0;
return addr.address[0] & 1 ? 0 : 1; /* Cannot be multicasting address */
}
#endif
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