sja1105_table_header_packing
sja1105_table_header_packing(final_header_ptr, &final_header, UNPACK);
sja1105_table_header_packing(final_header_ptr, &final_header, PACK);
sja1105_table_header_packing(p, &header, PACK);
sja1105_table_header_packing(buf, hdr, PACK);
size_t sja1105_table_header_packing(void *buf, void *hdr, enum packing_op op);