>> We have got some feedback about backward compatibility of VXLAN TX >> checksum offload API with 1G/10G NIC after the i40e VXLAN TX checksum >> codes were applied, so we have to rework the APIs on i40e, including >> the changes of mbuf, i40e PMD and csum engine. >> >> The main changes in mbuf are as follows, >> In place of removing PKT_TX_VXLAN_CKSUM, we introducing 2 new flags: >> PKT_TX_OUT_IP_CKSUM, PKT_TX_UDP_TUNNEL_PKT, and a new field: l4_tun_len. > > What about PKT_TX_OUT_UDP_CKSUM instead of PKT_TX_UDP_TUNNEL_PKT? It's > maybe more coherent with the other names.
oh I just realized that the flag is not for asking to the hardware to calculate the outer UDP checksum. So why does the hardware need this information?
