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

[Robert Sanford]

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.


On Fri, Mar 27, 2015 at 8:03 PM, Stephen Hemminger <
stephen at networkplumber.org> wrote:
> I would argue remove rte_rand from DPDK.



On Mon, Mar 30, 2015 at 1:28 AM, Stephen Hemminger <
stephen at 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 at 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.
> >
>