Re: [dpdk-dev] [RFC PATCH] eal: rte_rand yields only 62 random bits

[Neil Horman <nhorman@tuxdriver.com>]

On Mon, Mar 30, 2015 at 06:19:28PM -0400, Robert Sanford wrote:
> Yes, applications have many choices for PRNGs. But, we still need one
> internally for the following libs: PMDs (e1000, fm10k, i40e, ixgbe, virtio,
> xenvirt), sched, and timer.
> 
They can be updated to use the apropriate rng from an external library.
Neil

> 
> On Fri, Mar 27, 2015 at 8:03 PM, Stephen Hemminger <
> stephen@networkplumber.org> wrote:
> > I would argue remove rte_rand from DPDK.
> 
> 
> 
> On Mon, Mar 30, 2015 at 1:28 AM, Stephen Hemminger <
> stephen@networkplumber.org> wrote:
> 
> > if some one needs PRNG, th GNU scientific library has lots of them
> >
> > https://www.gnu.org/software/gsl/manual/html_node/Random-number-generator-algorithms.html
> >
> > On Fri, Mar 27, 2015 at 5:38 PM, Matthew Hall <mhall@mhcomputing.net>
> > wrote:
> >
> > > On Fri, Mar 27, 2015 at 05:03:02PM -0700, Stephen Hemminger wrote:
> > > > I would argue remove rte_rand from DPDK.
> > >
> > > +1
> > >
> > > To paraphrase Donald Knuth, "Random numbers should not be generated
> > [using
> > > a
> > > function coded] at random."
> > >
> > > It'd be better to fix libc, or considering that has a slow dev cycle and
> > > platform compatibility limits, use some simple, semi-random,
> > > high-performance
> > > BSD licensed routine from a known-good library.
> > >
> > > Matthew.
> > >
> >
>