Taylor. That is much appreciated. I was on the 6.1.2 release. Thanks --
On Jan 27, 2014, at 1:17 PM, Taylor R Campbell wrote: > Date: Mon, 27 Jan 2014 13:05:58 -0600 > From: Frank Zerangue <[email protected]> > > I looked at hifn, amdpm, and bcm28335 RNG drivers and they all seem > to do the same. They setup a callout to periodically call there RNG > reader to prime the random pool with more bits; but I don't see how > the polling is based on entropy needed. Could you clarify for me > what I have missed in regard to your suggestion below. > > Perhaps you're not looking at the code in HEAD. See, e.g., > > http://nxr.netbsd.org/xref/src/sys/arch/arm/broadcom/bcm2835_rng.c#128 > > which sets up a callback so that when the system thinks it needs some > more entropy, it will call bcmrng_get_cb, which schedules a softintr > to actually read data from the hardware and feed it to the system > entropy pool. > > This API is not yet stable -- at least, some months ago, Thor and I > discussed changing it to render the softintr indirection and locking > dance unnecessary -- but it will work for now. -- Frank Zerangue [email protected]
