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Diffstat (limited to 'Documentation/ABI/stable/sysfs-block')
| -rw-r--r-- | Documentation/ABI/stable/sysfs-block | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/Documentation/ABI/stable/sysfs-block b/Documentation/ABI/stable/sysfs-block index 8dd3e84a8aad..e8797cd09aff 100644 --- a/Documentation/ABI/stable/sysfs-block +++ b/Documentation/ABI/stable/sysfs-block @@ -155,6 +155,55 @@ Description: last zone of the device which may be smaller. +What: /sys/block/<disk>/queue/crypto/ +Date: February 2022 +Contact: linux-block@vger.kernel.org +Description: + The presence of this subdirectory of /sys/block/<disk>/queue/ + indicates that the device supports inline encryption. This + subdirectory contains files which describe the inline encryption + capabilities of the device. For more information about inline + encryption, refer to Documentation/block/inline-encryption.rst. + + +What: /sys/block/<disk>/queue/crypto/max_dun_bits +Date: February 2022 +Contact: linux-block@vger.kernel.org +Description: + [RO] This file shows the maximum length, in bits, of data unit + numbers accepted by the device in inline encryption requests. + + +What: /sys/block/<disk>/queue/crypto/modes/<mode> +Date: February 2022 +Contact: linux-block@vger.kernel.org +Description: + [RO] For each crypto mode (i.e., encryption/decryption + algorithm) the device supports with inline encryption, a file + will exist at this location. It will contain a hexadecimal + number that is a bitmask of the supported data unit sizes, in + bytes, for that crypto mode. + + Currently, the crypto modes that may be supported are: + + * AES-256-XTS + * AES-128-CBC-ESSIV + * Adiantum + + For example, if a device supports AES-256-XTS inline encryption + with data unit sizes of 512 and 4096 bytes, the file + /sys/block/<disk>/queue/crypto/modes/AES-256-XTS will exist and + will contain "0x1200". + + +What: /sys/block/<disk>/queue/crypto/num_keyslots +Date: February 2022 +Contact: linux-block@vger.kernel.org +Description: + [RO] This file shows the number of keyslots the device has for + use with inline encryption. + + What: /sys/block/<disk>/queue/dax Date: June 2016 Contact: linux-block@vger.kernel.org |