[PATCH V4] app/testpmd: fix GENEVE parsing in csum forward mode

[Ferruh Yigit]

On 2/21/2022 1:24 PM, Raja Zidane wrote:
> The csum FWD mode parses any received packet to set mbuf offloads for the
> transmitting burst, mainly in the checksum/TSO areas.
> In the case of a tunnel header, the csum FWD tries to detect known tunnels
> by the standard definition using the header'sdata and fallback to check the
> packet type in the mbuf to see if the Rx port driver already sign the
> packet as a tunnel.
> In the fallback case, the csum assumes the tunnel is VXLAN and parses the
> tunnel as VXLAN.
> When the GENEVE tunnel was added to the known tunnels in csum, its parsing
> trial was wrongly located after the pkt type detection, causing the csum to
> parse the GENEVE header as VXLAN when the Rx port set the tunnel packet
> type.
> 
> Remove the fall back case to VxLan.
> Log error of unrecognized tunnel if no tunnel was parsed successfully.
> 
> Fixes: c10a026c3b03 ("app/testpmd: introduce vxlan parsing function in csum fwd engine")
> Cc:stable at dpdk.org
> 
> Signed-off-by: Raja Zidane<rzidane at nvidia.com>

Moving Aman's ack from previous version:
Acked-by: Aman Singh <aman.deep.singh at intel.com>

Acked-by: Ferruh Yigit <ferruh.yigit at intel.com>

Applied to dpdk-next-net/main, thanks.