PMD tx path does not support VXLAN_GPE tunnel offload. Because it does not
process RTE_MBUF_F_TX_TUNNEL_VXLAN_GPE flag in mbuf, and then the "L4TUNT"
field will not be set in Tx context descriptor.
This patch is to add the RTE_MBUF_F_TX_TUNNEL_VXLAN_GPE flag to
support Tx VXLAN_GPE offload under the scenario if the offload tso
and VXLAN_GPE tunnel are both required, so that it would avoid
tx queue overflowing.
Fixes: daa02b5cddbb ("mbuf: add namespace to offload flags")
Cc: stable@dpdk.org
Signed-off-by: Mingjin Ye <mingjinx.ye@intel.com>
Tested-by: Ke Xu <ke1.xu@intel.com>
e91659806a