Take a look at this ticket: https://dev.openwrt.org/ticket/9631 ----- Original Message ----- From: Weedy To: OpenWrt Development List Sent: Friday, October 18, 2013 1:02 AM Subject: Re: [OpenWrt-Devel] Quick hack for kernel entropy problem on MIPS
On 17 Oct 2013 13:07, "chrono" <chr...@open-resource.org> wrote: >>>> >>>> root@OpenWrt:/# cat /proc/sys/kernel/random/entropy_avail >>>> 0 >>> >>> Uhhhhhh ok? >>> root@OpenWrt:~# cat /proc/sys/kernel/random/entropy_avail >>> 1189 >> >> >> What's your uptime? Entropy is added to the pool e.g. based on network >> activity. The issue is that the pool is empty right after boot up. > > > Well it's not anymore (with the patch). > That may be due to the fact that network is the only source of entropy > left on MIPS, that is something I personally wouldn't accept as enough > anymore. > > As I reckon there has been a lengthy discussion about it already and > many people raised their concerns. > > ecurity/meldung/Linux-auf-MIPS-jetzt-wieder-mit-mehr-Zufall-1963604.html > > (sorry for german link) > > That patch wouldn't work with 3.3.8 due to include dependencies I > wasn't willing to follow up. > > The attached patch will re-enable CPU interrupts as entropy source, > at least for AR71xx/mips32r3 and will do so right away, which might > also solve issues with hostapd/nginx that require some during init. Ahhhh, I can see how that might cause issues. I have made some sysctl tweaks and my network always has something going on. So I never noticed.
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