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/** Type definition of the internet version 4 pseudo header.

 *  @see ipv4_pseudo_header

 */

typedef struct ipv4_pseudo_header   ipv4_pseudo_header_t;

/** Type definition of the internet version 4 pseudo header pointer.

 *  @see ipv4_pseudo_header

 */

typedef ipv4_pseudo_header_t *      ipv4_pseudo_header_ref;

/** Internet version 4 pseudo header.

 */

struct ipv4_pseudo_header{

    /** The source address.

     */

    uint32_t    source_address;

    /** The destination address.

     */

    uint32_t    destination_address;

    /** Zero byte.

     */

    uint8_t     zero;

    /** This field indicates the next level protocol used in the data portion of the internet datagram.

     */

    uint8_t     protocol;

    /** Data length is the length of the datagram, measured in octets.

     */

    uint16_t    data_length;

} __attribute__ ((packed));