Vector Packet Processing (VPP) portability on FreeBSD

[Mark Johnston]

On Tue, May 11, 2021 at 12:43:10PM +0000, Francois ten Krooden wrote:
> On  Monday, 10 May 2021 16:10 Konstantin Belousov wrote:
> 
> 
> > On Mon, May 10, 2021 at 11:08:18AM +0000, Francois ten Krooden wrote:
> > > 3. What are suitable alternatives for reading information from procfs and
> > sysfs on FreeBSD?
> > Understand what information is obtained, then what for is it actually used,
> > then match it against equivalent FreeBSD approach, then gather the
> > required information.
> 
> Thank you.  This was basically what we suspected.
> One of the ones we are unsure about is what the equivalent of /proc/self/pagemap on Linux would be.
> The one idea we had is using procstat_getvmmap from libprocstat, but haven't finished investigating yet.

I believe DPDK's libeal uses /proc/pagemap to look up the physical
address of large page mappings.  Assuming you want to do the same thing,
there is the MEM_EXTRACT_PADDR /dev/mem ioctl.  It was added
specifically for DPDK.  See the mem(4) man page for details on its
usage.