[dpdk-dev] [PATCH v2 5/6] ixgbe: support VxLAN & NVGRE TX checksum off-load

[Thomas Monjalon]

2016-02-15 05:32, Lu, Wenzhuo:
> From: Ananyev, Konstantin
> > From reading X550 spec, I don't really understand what for we need to specify is
> > it GRE or VXLAN packet, so probably we don't need that flag for now at all?
> The reason is we need to set the tunnel type in the Advanced Transmit Data Descriptor.

Why don't we use packet type?

> > If we really do, might bw worth to organise it like KT_TX_L4_CKSUM (as enum)
> > and reserve few values for future expansion (2 or 3 bits?).
> Now there're only VxLAN and NVGRE supported. So, only 1 bit is occupied for that. Not sure if more types will be supported in the future. Any suggestions? Thanks.

Yes there can be a lot of tunnel types.
Please check RTE_PTYPE_TUNNEL_*