On 03/16/17 12:26, Harry Schmalzbauer wrote: > Hello, > > I'm wondering if I really loose [RT]XCSUM_IPV6 on if_igb(4) vlan(4) > children. > My igb0 (Kawela, aka 82576) options end with > "TSO6,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6" > > The vlan(4) filtered interfaces show these: > options=303<RXCSUM,TXCSUM,TSO4,TSO6> > > So TSO6 is inherited, but RC/TXCSUM_IPV6 dropped? > > In general, how is offloading implemented? If enabled, does the API > simply generate packets lacking the checksum header and NIC (silicon) > fills in the checksum if not adviesd not to do so (by the driver)? > Or is the driver utilizing NIC registers for calculation, but ensures > every packet will have a checksum? > > Thanks, > > -harry > >
That looks like a bug. Which version of FreeBSD is this? sean
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