+ efx_dword_t security_level; /* This number increases every time a serious security flaw */
+ /* is fixed. A secure NIC may not downgrade to any image */
+ /* with a lower security level than the current image. */
+ /* Note: The number in this header should only be used for */
+ /* determining the level of new images, not to determine */
+ /* the level of the current image as this header is not */
+ /* protected by a CMAC. */
+ efx_dword_t reserved_c[5]; /* (set to 0) */