| What: /sys/kernel/debug/nx-crypto/* |
| Date: March 2012 |
| KernelVersion: 3.4 |
| Contact: Kent Yoder <key@linux.vnet.ibm.com> |
| Description: |
| |
| These debugfs interfaces are built by the nx-crypto driver, built in |
| arch/powerpc/crypto/nx. |
| |
| Error Detection |
| =============== |
| |
| errors: |
| - A u32 providing a total count of errors since the driver was loaded. The |
| only errors counted here are those returned from the hcall, H_COP_OP. |
| |
| last_error: |
| - The most recent non-zero return code from the H_COP_OP hcall. -EBUSY is not |
| recorded here (the hcall will retry until -EBUSY goes away). |
| |
| last_error_pid: |
| - The process ID of the process who received the most recent error from the |
| hcall. |
| |
| Device Use |
| ========== |
| |
| aes_bytes: |
| - The total number of bytes encrypted using AES in any of the driver's |
| supported modes. |
| |
| aes_ops: |
| - The total number of AES operations submitted to the hardware. |
| |
| sha256_bytes: |
| - The total number of bytes hashed by the hardware using SHA-256. |
| |
| sha256_ops: |
| - The total number of SHA-256 operations submitted to the hardware. |
| |
| sha512_bytes: |
| - The total number of bytes hashed by the hardware using SHA-512. |
| |
| sha512_ops: |
| - The total number of SHA-512 operations submitted to the hardware. |
