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/** Type definition of the Ethernet header SNAP extension pointer.
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/** Type definition of the Ethernet header SNAP extension pointer.
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 *  @see eth_header_snap
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 *  @see eth_header_snap
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 */
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 */
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typedef eth_header_snap_t *     eth_header_snap_ref;
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typedef eth_header_snap_t *     eth_header_snap_ref;
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/** Type definition of the Ethernet header preamble.
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 *  @see preamble
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 */
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typedef struct eth_preamble eth_preamble_t;
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/** Type definition of the Ethernet header preamble pointer.
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 *  @see eth_preamble
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 */
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typedef eth_preamble_t *        eth_preamble_ref;
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/** Type definition of the Ethernet header.
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/** Type definition of the Ethernet header.
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 *  @see eth_header
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 *  @see eth_header
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 */
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 */
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typedef struct eth_header   eth_header_t;
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typedef struct eth_header   eth_header_t;
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     *  @see ethernet_protocols.h
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     *  @see ethernet_protocols.h
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     */
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     */
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    uint16_t    ethertype;
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    uint16_t    ethertype;
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};
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};
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/** Ethernet header.
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/** Ethernet header preamble.
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 *  Used for dummy devices.
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 */
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 */
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struct eth_header{
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struct eth_preamble{
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    /** Controlling preamble used for the frame transmission synchronization.
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    /** Controlling preamble used for the frame transmission synchronization.
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     *  All should be set to ETH_PREAMBLE.
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     *  All should be set to ETH_PREAMBLE.
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     */
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     */
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    uint8_t     preamble[ 7 ];
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    uint8_t     preamble[ 7 ];
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    /** Start of Frame Delimiter used for the frame transmission synchronization.
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    /** Start of Frame Delimiter used for the frame transmission synchronization.
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     *  Should be set to ETH_SFD.
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     *  Should be set to ETH_SFD.
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     */
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     */
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    uint8_t     sfd;
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    uint8_t     sfd;
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};
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/** Ethernet header.
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 */
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struct eth_header{
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    /** Destination host Ethernet address (MAC address).
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    /** Destination host Ethernet address (MAC address).
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     */
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     */
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    uint8_t     dest[ ETH_ADDR ];
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    uint8_t     dest[ ETH_ADDR ];
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    /** Source host Ethernet address (MAC address).
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    /** Source host Ethernet address (MAC address).
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     */
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     */