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 */
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 */
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void *  packet_get_data( const packet_t packet );
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void *  packet_get_data( const packet_t packet );
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/** Returns the stored packet addresses and their length.
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/** Returns the stored packet addresses and their length.
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 *  @param packet The packet. Input parameter.
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 *  @param packet The packet. Input parameter.
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 *  @param src The source address. Output parameter.
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 *  @param src The source address. May be NULL if not desired. Output parameter.
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 *  @param dest The destination address. Output parameter.
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 *  @param dest The destination address. May be NULL if not desired. Output parameter.
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 *  @returns The addresses length.
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 *  @returns The stored addresses length.
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 *  @returns Zero (0) if the addresses are not present.
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 *  @returns Zero (0) if the addresses are not present.
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 *  @returns EINVAL if the packet is not valid.
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 *  @returns EINVAL if the packet is not valid.
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 *  @returns EINVAL if the src and/or the dest parameter is NULL.
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 */
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 */
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int packet_get_addr( const packet_t packet, uint8_t ** src, uint8_t ** dest );
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int packet_get_addr( const packet_t packet, uint8_t ** src, uint8_t ** dest );
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/** Sets the packet addresses.
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/** Sets the packet addresses.
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 *  @param packet The packet. Input parameter.
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 *  @param packet The packet. Input parameter.
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 *  @param src The new source address. Output parameter.
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 *  @param src The new source address. May be NULL. Input parameter.
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 *  @param dest The new destination address. Output parameter.
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 *  @param dest The new destination address. May be NULL. Input parameter.
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 *  @param addr_len The addresses length.
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 *  @param addr_len The addresses length.
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 *  @returns EOK on success.
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 *  @returns EOK on success.
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 *  @returns EINVAL if the packet is not valid.
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 *  @returns EINVAL if the packet is not valid.
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 *  @returns ENOMEM if there is not enough memory left.
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 *  @returns ENOMEM if there is not enough memory left.
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 */
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 */