[dpdk-dev] [PATCH v4 4/6] i40e: add Tx preparation

[Wu, Jingjing]

>  #include "i40e_logs.h"
>  #include "base/i40e_prototype.h"
> @@ -79,6 +81,17 @@
>  		PKT_TX_TCP_SEG |		 \
>  		PKT_TX_OUTER_IP_CKSUM)
> 
> +#define I40E_TX_OFFLOAD_MASK (  \
> +		PKT_TX_IP_CKSUM |       \
> +		PKT_TX_L4_MASK |        \
> +		PKT_TX_OUTER_IP_CKSUM | \
> +		PKT_TX_TCP_SEG |        \
> +		PKT_TX_QINQ_PKT |       \
> +		PKT_TX_VLAN_PKT)
> +
More TX flags are added for tunneling as below.
/**
 * Bits 45:48 used for the tunnel type.
 * When doing Tx offload like TSO or checksum, the HW needs to configure the
 * tunnel type into the HW descriptors.
 */
#define PKT_TX_TUNNEL_VXLAN   (0x1ULL << 45)
#define PKT_TX_TUNNEL_GRE     (0x2ULL << 45)
#define PKT_TX_TUNNEL_IPIP    (0x3ULL << 45)
#define PKT_TX_TUNNEL_GENEVE  (0x4ULL << 45)
/* add new TX TUNNEL type here */
#define PKT_TX_TUNNEL_MASK    (0xFULL << 45)

Please check:
commit 63c0d74daaa9a807fbca8a3e363bbe41d6fb715f
Author: Jianfeng Tan <jianfeng.tan at intel.com>
Date:   Mon Aug 1 03:56:53 2016 +0000

    mbuf: add Tx side tunneling type


Thanks
Jingjing