Am Mittwoch, 4. November 2015, 07:13:07 schrieb Eric Dumazet: > On Wed, 2015-11-04 at 15:09 +0100, Wolfgang Walter wrote: > > Yes, maybe igb has a problem sending a gro-packet if it is an isatap in > > gre. > We might detect this condition properly from igb ndo_features_check > method. > > It currently uses plain passthru_features_check() > > > igb has no problem sending gro-packets which are pure isatap or which are > > ipv4 (tcp/udp) in gre with 4.1.12 + these patches. > > > > And it had no problem with 4.1.11 with isatap in gre. > > > > Disabling gso for the interface does help. > > My patch was aimed for 4.4, not sure about backports to old kernels...
I know. I cannot test 4.4 (or net-next) on that router, though, as I don't have easy physical access to it if it crashes or I loose network connectivity. For such tests I must send someone in situ. As 4.4 will be the next longterm kernel I definitivly will do that for 4.4-rc2 or 4.4-rc3. I think your patch is correct for 4.1 in the sense that ISATAP is correctly handled. Only SIT in GRE triggers this and if it is indeed igb I will see it probably in 4.4 ;-), too. I now tested an unmodified 4.1.12 and it shows no problems. Regards, -- Wolfgang Walter Studentenwerk München Anstalt des öffentlichen Rechts -- 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
