On 12/09/15 at 10:00am, Tom Herbert wrote: > On Wed, Dec 9, 2015 at 9:28 AM, Edward Cree <ec...@solarflare.com> wrote: > > Which only pushes the problem onto when someone wants to nest > > encapsulations. (I heard you like tunnels, so I put a tunnel in your > > tunnel so you can encapsulate while you encapsulate.) > > Or to put it another way, 2 isn't a number; the only numbers are 0, 1 > > and infinity ;) > > Perhaps in practice 2 csums would be enough, for now. But isn't the > > whole point of the brave new world of generic checksums that it should > > be future-proof? > > > If there is a need then we can add an arbitrary number. But no one has > proven there is a need, however we do have a real need for checksum > offload outside of the narrow uses of NETIF_F_IP[V6]_CSUM.
Need may be a strong word here but people have started doing nested tunneling by running container orchestration tools which use VXLAN to isolate containers inside of OpenStack virtual infrastructure which also creates virtual networks. I'm not saying it's sane or desirable but we will start seeing nested tunnels in the wild :-( -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
