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Message-ID: <CAGb2v67zxs03xScN8OfWXR1gf8tddJciXrjw3FQZcL7pR3ocxA@mail.gmail.com> Date: Tue, 16 Jul 2024 23:18:48 +0800 From: Chen-Yu Tsai <wens@...nel.org> To: Diederik de Haas <didi.debian@...ow.org> Cc: Daniel Golle <daniel@...rotopia.org>, linux-rockchip@...ts.infradead.org, linux-arm-kernel@...ts.infradead.org, Rob Herring <robh@...nel.org>, Conor Dooley <conor+dt@...nel.org>, linux-kernel@...r.kernel.org, Herbert Xu <herbert@...dor.apana.org.au>, Martin Kaiser <martin@...ser.cx>, Sascha Hauer <s.hauer@...gutronix.de>, Sebastian Reichel <sebastian.reichel@...labora.com>, Ard Biesheuvel <ardb@...nel.org>, Uwe Kleine-König <ukleinek@...ian.org>, devicetree@...r.kernel.org, linux-crypto@...r.kernel.org, Philipp Zabel <p.zabel@...gutronix.de>, Olivia Mackall <olivia@...enic.com>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Dragan Simic <dsimic@...jaro.org>, Aurelien Jarno <aurelien@...el32.net>, Heiko Stuebner <heiko@...ech.de> Subject: Re: [PATCH v7 0/3] hwrng: add hwrng support for Rockchip RK3568 On Tue, Jul 16, 2024 at 10:13 PM Diederik de Haas <didi.debian@...ow.org> wrote: > > On Tuesday, 16 July 2024 15:59:40 CEST Diederik de Haas wrote: > > For shits and giggles, I tried it on my PineTab2 too (also rk3566): > > > > =========================================================== > > root@...etab2:~# uname -a > > Linux pinetab2 6.10+unreleased-arm64 #1 SMP Debian 6.10-1~cknow (2024-04-24) > > aarch64 GNU/Linux > > > > root@...etab2:~# dd if=/dev/hwrng bs=100000 count=1 > /dev/null > > 1+0 records in > > 1+0 records out > > 100000 bytes (100 kB, 98 KiB) copied, 5,69533 s, 17,6 kB/s > > > > root@...bian-pinetab2:~# cat /dev/hwrng | rngtest -c 1000 > > rngtest 5 > > Copyright (c) 2004 by Henrique de Moraes Holschuh > > This is free software; see the source for copying conditions. > > There is NO warranty; not even for MERCHANTABILITY or > > FITNESS FOR A PARTICULAR PURPOSE. > > > > rngtest: starting FIPS tests... > > rngtest: bits received from input: 20000032 > > rngtest: FIPS 140-2 successes: 730 > > rngtest: FIPS 140-2 failures: 270 > > rngtest: FIPS 140-2(2001-10-10) Monobit: 266 > > rngtest: FIPS 140-2(2001-10-10) Poker: 23 > > rngtest: FIPS 140-2(2001-10-10) Runs: 9 > > rngtest: FIPS 140-2(2001-10-10) Long run: 0 > > rngtest: FIPS 140-2(2001-10-10) Continuous run: 0 > > rngtest: input channel speed: (min=2.615; avg=137.889; > > max=9765625.000)Kibits/s rngtest: FIPS tests speed: (min=24.643; > > avg=34.518; max=68.364)Mibits/s rngtest: Program run time: 149674336 > > microseconds > > =========================================================== > > > > That's looking quite a lot better ... and I have no idea why. > > > > The Q64-A is used as headless server and the PineTab2 is not, > > but I connected to both over SSH and they were freshly booted > > into, thus I haven't actually/normally used the PT2 since boot. > > I did freshly install rng-tools5 package before running the test, so > I rebooted again to make sure that wasn't a factor: > > =========================================================== > root@...etab2:~# cat /dev/hwrng | rngtest -c 1000 > rngtest 5 > ... > > rngtest: starting FIPS tests... > rngtest: bits received from input: 20000032 > rngtest: FIPS 140-2 successes: 704 > rngtest: FIPS 140-2 failures: 296 > rngtest: FIPS 140-2(2001-10-10) Monobit: 293 > rngtest: FIPS 140-2(2001-10-10) Poker: 32 > rngtest: FIPS 140-2(2001-10-10) Runs: 10 > rngtest: FIPS 140-2(2001-10-10) Long run: 0 > rngtest: FIPS 140-2(2001-10-10) Continuous run: 0 > rngtest: input channel speed: (min=2.612; avg=137.833; max=9765625.000)Kibits/s > rngtest: FIPS tests speed: (min=24.391; avg=34.416; max=68.364)Mibits/s > rngtest: Program run time: 149736205 microseconds > =========================================================== > > So that 704/296 vs 730/270 in the previous run on the PT2. > > In case it helps: > =========================================================== > root@...rtz64a:~# grep . /sys/devices/virtual/misc/hw_random/rng_* > /sys/devices/virtual/misc/hw_random/rng_available:rockchip-rng > /sys/devices/virtual/misc/hw_random/rng_current:rockchip-rng > /sys/devices/virtual/misc/hw_random/rng_quality:900 > /sys/devices/virtual/misc/hw_random/rng_selected:0 > > root@...etab2:~# grep . /sys/devices/virtual/misc/hw_random/rng_* > /sys/devices/virtual/misc/hw_random/rng_available:rockchip-rng > /sys/devices/virtual/misc/hw_random/rng_current:rockchip-rng > /sys/devices/virtual/misc/hw_random/rng_quality:900 > /sys/devices/virtual/misc/hw_random/rng_selected:0 > =========================================================== On my Rock 3A: wens@...k-3a:~$ sudo cat /dev/hwrng | rngtest -c 1000 rngtest 5 Copyright (c) 2004 by Henrique de Moraes Holschuh This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. rngtest: starting FIPS tests... rngtest: bits received from input: 20000032 rngtest: FIPS 140-2 successes: 992 rngtest: FIPS 140-2 failures: 8 rngtest: FIPS 140-2(2001-10-10) Monobit: 7 rngtest: FIPS 140-2(2001-10-10) Poker: 0 rngtest: FIPS 140-2(2001-10-10) Runs: 0 rngtest: FIPS 140-2(2001-10-10) Long run: 1 rngtest: FIPS 140-2(2001-10-10) Continuous run: 0 rngtest: input channel speed: (min=2.658; avg=140.067; max=9765625.000)Kibits/s rngtest: FIPS tests speed: (min=26.751; avg=34.901; max=65.320)Mibits/s rngtest: Program run time: 147367594 microseconds wens@...k-3a:~$ uname -a Linux rock-3a 6.10.0-rc7-next-20240712-12899-g7df602fe7c8b #9 SMP Mon Jul 15 00:39:32 CST 2024 aarch64 GNU/Linux ChenYu
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