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cba102cd71
Use libeth XDP infra to support running XDP program on Rx polling. This includes all of the possible verdicts/actions. XDP Tx queues are cleaned only in "lazy" mode when there are less than 1/4 free descriptors left on the ring. libeth helper macros to define driver-specific XDP functions make sure the compiler could uninline them when needed. Use __LIBETH_WORD_ACCESS to parse descriptors more efficiently when applicable. It really gives some good boosts and code size reduction on x86_64: XDP only: add/remove: 0/0 grow/shrink: 3/3 up/down: 5/-59 (-54) with XSk: add/remove: 0/0 grow/shrink: 5/6 up/down: 23/-124 (-101) with the most demanding workloads like XSk xmit differing in up to 5-8%. Co-developed-by: Michal Kubiak <michal.kubiak@intel.com> Signed-off-by: Michal Kubiak <michal.kubiak@intel.com> Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com> Tested-by: Ramu R <ramu.r@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>