DOKK / manpages / debian 12 / libnvme-dev / nvmf_tcp_sectype.2.en
libnvme(2) API Manual libnvme(2)

enum nvmf_tcp_sectype - Transport Specific Address Subtype Definition for NVMe/TCP Transport

enum nvmf_tcp_sectype {
NVMF_TCP_SECTYPE_NONE ,
NVMF_TCP_SECTYPE_TLS ,
NVMF_TCP_SECTYPE_TLS13

};

No Security
Transport Layer Security version 1.2
Transport Layer Security version 1.3 or a subsequent version. The TLS protocol negotiates the version and cipher suite for each TCP connection.
enum nvmf_tcp_sectype January 2023