> > We will not get what we want, the ipv6 packets sent out from IXIA can be > > received by i40e, but cannot forward to another port. > > The root cause is when HW doing the TSO offload for packets, it does not > > only > > depends on the context descriptor to define the MSS and TSO payload size, it > > also need to know whether this packets is ipv4 or ipv6, we use > > i40e_txd_enable_checksum to generate the related fields for data descriptor. > > But PMD will not call i40e_txd_enable_checksum if only the TSO offload flag > > is > > set. The reason why ipv4 works fine for TSO in testpmd csum mode is csum > > engine > > will set the ip csum flag when the packet is ipv4 and TSO is enabled but > > will not set the flag for ipv6 and this flag will cause the > > i40e_txd_enable_checksum to be invoked. For both the cases the TSO flag > > will be > > set, so we need to use TSO flag to trigger the i40e_txd_enable_checksum. > > The right logic here is we enable csum offload for both ipv4 and ipv6 when > > TSO > > flag is set. > > > > Fixes: e3f0151f (i40e: enable Tx checksum only for offloaded packets) > > > > Signed-off-by: Zhe Tao <zhe.tao at intel.com> > > Acked-by: Konstantin Ananyev <konstantin.ananyev at intel.com>
Applied, thanks
