glxsb0: Random generator not generating randomness?

[Martijn van Buul <pino%dohd.org@localhost>]

Hello,

Is anyone out there using NetBSD 5.1.1 on a PCEngines ALIX board? These
boards are supposed to have a hardware random number generator, but the
one in my board isn't generating much data. It's properly detected at
boot:

glxsb0 at pci0 dev 1 function 2: RNG AES

but according to rndctl it's not generating any entropy:

# rndctl -l
Source                 Bits Type      Flags
wd1                10550881 disk estimate, collect
wd0                 1437488 disk estimate, collect
vr1                       0 net
vr0                       0 net
glxsb0                    0 rng  collect

This came as a bit of a surprise (and some concern), as this would indicate
that this particular box will be rather low on entropy (wd0 is a compact
flash disk, so it will be a rather poor source of randomness and wd1 is idle
most of the time).

Any suggestions?

-- 
Martijn van Buul - pino%dohd.org@localhost