"net/ice" and "net/i40e" have not implemented outer UDP checksum offload, but the capability flag has been set.

https://bugs.dpdk.org/show_bug.cgi?id=1406

Bug ID: 1406
Summary: "net/ice" and "net/i40e" have not implemented outer
UDP checksum offload, but the capability flag has been set.
Product: DPDK
Version: 23.11
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: normal
Priority: Normal
Component: ethdev
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---

As shown in [1],a geneve packet with TSO request is transmitted, and resulting packets mismatch because of the wrong checksum in the outer UDP header (it is the same as the one in the original superframe). However, since the test sees capability bit TX_OFFLOAD_OUTER_UDP_CKSUM in device info, the checksum is expected to be offloaded.

Both X710 and E810 encounter the same issue. Upon reviewing the unloading portion of the code, it's evident that only adding capabilities without unloading part of the code was implemented.

[1] https://github.com/openvswitch/ovs-issues/issues/321

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