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#ifndef _LLC_H_
#define _LLC_H_

/*
 * INCLUDE FILES
 ****************************************************************************************
 */

#include "co_int.h"

/*
 * DEFINES
 ****************************************************************************************
 */

#define LLC_LLC_LEN                  3
#define LLC_DSAP                     0xAA
#define LLC_SSAP                     0xAA
#define LLC_CTRL                     0x03

#define LLC_SNAP_LEN                 5
#define LLC_OUI_LEN                  3

#define LLC_802_2_HDR_LEN            (LLC_LLC_LEN + LLC_SNAP_LEN)



#define LLC_ETHER_MTU                1500
#define LLC_ETHER_HDR_LEN            14
#define LLC_ETHERTYPE_LEN            2
#define LLC_ETHERTYPE_LEN_OFT        12
#define LLC_802_2_ETHERTYPE_OFT      6
#define LLC_FRAMELENGTH_MAXVALUE     0x600

#define LLC_ETHERTYPE_APPLETALK      0x809B
#define LLC_ETHERTYPE_IPX            0x8137
#define LLC_ETHERTYPE_AARP           0x80F3
#define LLC_ETHERTYPE_EAP_T          0x888E
#define LLC_ETHERTYPE_802_1Q         0x8100
#define LLC_ETHERTYPE_IP             0x0800
#define LLC_ETHERTYPE_ARP            0x0806

#define LLC_802_1Q_TCI_VID_MASK       0x0FFF
#define LLC_802_1Q_TCI_PRI_MASK       0xE000
#define LLC_802_1Q_TCI_CFI_MASK       0x1000
#define LLC_802_1Q_HDR_LEN            4
#define LLC_802_1Q_VID_NULL           0
#define LLC_OFFSET_ETHERTYPE          12
#define LLC_OFFSET_IPV4_PRIO          15
#define LLC_OFFSET_802_1Q_TCI         14


/*
 * TYPES DEFINITION
 ****************************************************************************************
 */

struct llc_snap_short
{
    uint16_t dsap_ssap;
    uint16_t control_oui0;
    uint16_t oui1_2;
};

struct llc_snap
{
    uint16_t dsap_ssap;
    uint16_t control_oui0;
    uint16_t oui1_2;
    uint16_t proto_id;
};

/*
 * CONSTANTS
 ****************************************************************************************
 */
extern const struct llc_snap_short llc_rfc1042_hdr;

extern const struct llc_snap_short llc_bridge_tunnel_hdr;


#endif // _LLC_H_

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