-
Tariq Toukan authored
Add XDP support over Striding RQ. Now that linear SKB is supported over Striding RQ, we can support XDP by setting stride size to PAGE_SIZE and headroom to XDP_PACKET_HEADROOM. Upon a MPWQE free, do not release pages that are being XDP xmit, they will be released upon completions. Striding RQ is capable of a higher packet-rate than conventional RQ. A performance gain is expected for all cases that had a HW packet-rate bottleneck. This is the case whenever using many flows that distribute to many cores. Performance testing: ConnectX-5, 24 rings, default MTU. CQE compression ON (to reduce completions BW in PCI). XDP_DROP packet rate: -------------------------------------------------- | pkt size | XDP rate | 100GbE linerate | pct% | -------------------------------------------------- | 64byte | 126.2 Mpps | 148.0 Mpps | 85% | | 128byte | 80.0 Mpps | 84.8 Mpps | 94% | | 256byte | 42.7 Mpps | 42.7 Mpps | 100% | | 512byte | 23.4 Mpps | 23.4 Mpps | 100% | -------------------------------------------------- Signed-off-by:
Tariq Toukan <tariqt@mellanox.com> Signed-off-by:
Saeed Mahameed <saeedm@mellanox.com>
22f45398