[RFC PATCH 0/8] remove use of rte_memcpy from net/intel

Bruce Richardson bruce.richardson at intel.com
Wed May 20 16:53:24 CEST 2026


On Wed, May 20, 2026 at 03:50:34PM +0200, Morten Brørup wrote:
> > From: Bruce Richardson [mailto:bruce.richardson at intel.com]
> > Sent: Wednesday, 20 May 2026 09.45
> PATCH 0/8] remove use of rte_memcpy from net/intel
> > 
> > On Tue, May 19, 2026 at 12:43:32PM -0700, Stephen Hemminger wrote:
> > > On Tue, 19 May 2026 16:05:57 +0000
> > > Bruce Richardson <bruce.richardson at intel.com> wrote:
> > >
> > > > This RFC proposed to replace all instances of rte_memcpy in Intel
> > > > (and former-Intel) net drivers with just regular memcpy. This is
> > > > done on the basis that the memcpy use is not datapath, but is used
> > > > for flow configuration, virt-channel (to firmware or PF) messaging
> > > > and other control path functions.
> > >
> > > Makes sense. You might also want to look for where structure
> > > assignment can be used instead of memcpy. Keeping data types
> > > is a good thing.
> > 
> > Yes, it would be nice to use in places. However, it's not a mechanical
> > change so I've not taken the time to do the analysis. Just a quick set
> > of sed replacements for this RFC.
> 
> If you consider structure assignment, look out for fixed-size structures ending with field[1]; they are really (ill defined) flex-arrays.
> 

Yep, they were mentioned in a previous discussion on-list with Anatoly too.
Three is always more cleanup to be done! :-)


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