nvmf_ext_attr - Man Page

struct nvmf_ext_attr {
   __le16 exattype;
   __le16 exatlen;
   __u8 exatval[];
};

exattype

Extended Attribute Type (EXATTYPE) - see enum nvmf_exattype

exatlen

Extended Attribute Length (EXATLEN)

exatval

Extended Attribute Value (EXATVAL) - size allocated for array must be a multiple of 4 bytes