net/ice: support VXLAN-GPE tunnel offload

[ upstream commit e916598 ]

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: daa02b5 ("mbuf: add namespace to offload flags")

Signed-off-by: Mingjin Ye <mingjinx.ye@intel.com>
Tested-by: Ke Xu <ke1.xu@intel.com>

drivers/net/ice/ice_rxtx.c

@@ -2506,6 +2506,7 @@ ice_parse_tunneling_params(uint64_t ol_flags,
 		/* for non UDP / GRE tunneling, set to 00b */
 		break;
 	case RTE_MBUF_F_TX_TUNNEL_VXLAN:
+	case RTE_MBUF_F_TX_TUNNEL_VXLAN_GPE:
 	case RTE_MBUF_F_TX_TUNNEL_GTP:
 	case RTE_MBUF_F_TX_TUNNEL_GENEVE:
 		*cd_tunneling |= ICE_TXD_CTX_UDP_TUNNELING;