Re: [PATCH v27 12/12] LRNG - add power-on and runtime self-tests
From: Randy Dunlap <hidden>
Date: 2020-01-10 00:23:26
Also in:
linux-crypto, lkml
Hi, On 1/9/20 12:35 AM, Stephan Müller wrote:
quoted hunk ↗ jump to hunk
--- drivers/char/lrng/Kconfig | 25 ++ drivers/char/lrng/Makefile | 1 + drivers/char/lrng/lrng_selftest.c | 418 ++++++++++++++++++++++++++++++ 3 files changed, 444 insertions(+) create mode 100644 drivers/char/lrng/lrng_selftest.cdiff --git a/drivers/char/lrng/Kconfig b/drivers/char/lrng/Kconfig index 394066aa5a86..e9827e7df715 100644 --- a/drivers/char/lrng/Kconfig +++ b/drivers/char/lrng/Kconfig@@ -175,4 +175,29 @@ config LRNG_TESTING If unsure, say N. +config LRNG_SELFTEST + bool "Enable power-on and on-demand self-tests" + help + The power-on self tests are executed during boot time
self-tests
+ covering the ChaCha20 DRNG, the LFSR processing and the + time stamp management of the LRNG. + + The on-demand self-tests are triggered by writing any + value into the SysFS file selftest_status. At the same + time, when reading this file, the test status is + returned. A zero indicates that all tests were executed + successfully. + + If unsure, say Y. + +if LRNG_SELFTEST + +config LRNG_SELFTEST_PANIC + bool "Panic the kernel upon self-test failure" + help + If the option is enabled, the kernel is terminated if an + LRNG power-on self-test failure is detected. + +endif # LRNG_SELFTEST + endif # LRNG
-- ~Randy