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/************************************************************************************
 *
 *  Filename:      btif_pan_internal.h
 *
 *  Description:   Bluetooth pan internal
 *
 *
 ***********************************************************************************/

#ifndef btif_pan_internal_h_
#define btif_pan_internal_h_
#include "btif_pan.h"
#include "bt_types.h"

#define PAN_NAP_SERVICE_NAME "Android Network Access Point"
#define PANU_SERVICE_NAME "Android Network User"
#define TAP_IF_NAME "bt-pan"
#define ETH_ADDR_LEN        6
#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
typedef struct eth_hdr
{
    unsigned char h_dest[ETH_ADDR_LEN];
    unsigned char h_src[ETH_ADDR_LEN];
    short         h_proto;
} tETH_HDR;
typedef struct
{
    int handle;
    int state;
    UINT16 protocol;
    BD_ADDR peer;
    int local_role;
    int remote_role;
    unsigned char eth_addr[ETH_ADDR_LEN];
} btpan_conn_t;

typedef struct
{
    int btl_if_handle;
    int btl_if_handle_panu;
    int tap_fd;
    int enabled;
    int open_count;
    btpan_conn_t conns[MAX_PAN_CONNS];
} btpan_cb_t;
extern btpan_cb_t btpan_cb;
btpan_conn_t *btpan_new_conn(int handle, const BD_ADDR addr, int local_role, int peer_role);
btpan_conn_t *btpan_find_conn_addr(const BD_ADDR addr);
btpan_conn_t *btpan_find_conn_handle(UINT16 handle);
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 BD_ADDR src, const BD_ADDR dst, UINT16 protocol,
                   const char* buff, UINT16 size, BOOLEAN ext, BOOLEAN forward);
static inline int is_empty_eth_addr(const BD_ADDR addr)
{
    int i;
    for(i = 0; i < BD_ADDR_LEN; i++)
        if(addr[i] != 0)
            return 0;
    return 1;
}
static inline int is_valid_bt_eth_addr(const BD_ADDR addr)
{
    if(is_empty_eth_addr(addr))
        return 0;
    return addr[0] & 1 ? 0 : 1; //cannot be multicasting address
}

#endif