[dpdk-dev] [PATCH v1 0/6] Introduce AF_XDP PMD

[Karlsson, Magnus]

> -----Original Message-----
> From: Zhang, Qi Z
> Sent: Tuesday, March 12, 2019 2:52 AM
> To: Thomas Monjalon <thomas at monjalon.net>; Yigit, Ferruh
> <ferruh.yigit at intel.com>; Ye, Xiaolong <xiaolong.ye at intel.com>
> Cc: dev at dpdk.org; Richardson, Bruce <bruce.richardson at intel.com>;
> Karlsson, Magnus <magnus.karlsson at intel.com>; Topel, Bjorn
> <bjorn.topel at intel.com>
> Subject: RE: [dpdk-dev] [PATCH v1 0/6] Introduce AF_XDP PMD
> 
> + Magnus & Bjorn who can give more accurate comment about kernel
> upstream status.
> 
> 
> > -----Original Message-----
> > From: Thomas Monjalon [mailto:thomas at monjalon.net]
> > Sent: Tuesday, March 12, 2019 1:20 AM
> > To: Yigit, Ferruh <ferruh.yigit at intel.com>; Ye, Xiaolong
> > <xiaolong.ye at intel.com>
> > Cc: dev at dpdk.org; Zhang, Qi Z <qi.z.zhang at intel.com>; Richardson,
> > Bruce <bruce.richardson at intel.com>
> > Subject: Re: [dpdk-dev] [PATCH v1 0/6] Introduce AF_XDP PMD
> >
> > 11/03/2019 17:43, Ferruh Yigit:
> > > On 3/1/2019 8:09 AM, Xiaolong Ye wrote:
> > > > Overview
> > > > ========
> > > >
> > > > This patchset adds a new PMD driver for AF_XDP which is a proposed
> > > > faster version of AF_PACKET interface in Linux, see below links
> > > > [1] [2] for details of AF_XDP introduction:
> > > >
> > > > AF_XDP roadmap
> > > > ==============
> > > > - AF_XDP is included in upstream kernel since 4.18, and AF_XDP support
> > > >   in libbpf has been merged in bpf-next/master. [3]
> > >
> > > And it seems it has been merged into main repo [1], I assume it will
> > > be part of 5.1, which I guess will be released mid May.
> > >
> > > And we have release on 10 May. Taking into account that libbpf APIs
> > > used extensively, does it mean we can't release af_xdp on 19.05?
> > >
> > > [1]
> > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/c
> > > om
> > > mit?id=1cad078842396f0047a796694b6130fc096d97e2
> >
> > I think the requirement is to have all dependencies upstream, so we
> > avoid releasing a feature not working when dependency is ready.
> >
> > If all is ready in Linux mainline branch, I guess we are fine, are we?

Libbpf is in linux-next which means it will be in the 5.1 release. This release will likely be in the end of April if we count the normal 8 week cadence of releases. 8 weeks means April 28, 9 weeks = May 5. 10 weeks = May 12. So unless we go all the way to 10 weeks, this feature should be in a stable release before DPDK 19.05.

/Magnus