[Seagate] Feature 0xc001 on Seagate ("Logical ports")

[bluecmd]

My Seagate disk seems to report an undocumented 0xC001 feature in the Level0.

pysed seems to have a reference: https://github.com/Seagate/TCGstorageAPI/blob/master/pysed/Tcg.h#L59

[bluecmd]

This is the feature descriptor pysed uses:

    struct PortDesc {
            DescHdr     hdr;
            struct PortEntry {
                beint32_t   portIdentifier;
                uint8_t     portLocked;
                uint8_t     reserved[3];
            } __attribute__((__packed__)) portEntry[1];
    } __attribute__((__packed__));