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| author | Maciej Fijalkowski <maciej.fijalkowski@intel.com> | 2022-01-25 17:04:46 +0100 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2022-01-27 17:25:33 +0100 |
| commit | 59e92bfe4df71a833678a94b9947843a4c9f55bb (patch) | |
| tree | c2350d03fe3d1bc0860f7b084fc3f69d1725c1e0 /tools/testing/selftests/bpf/trace_helpers.c | |
| parent | 126cdfe1007acb3632d054a4a68a0174bd47f17d (diff) | |
ice: xsk: Borrow xdp_tx_active logic from i40e
One of the things that commit 5574ff7b7b3d ("i40e: optimize AF_XDP Tx
completion path") introduced was the @xdp_tx_active field. Its usage
from i40e can be adjusted to ice driver and give us positive performance
results.
If the descriptor that @next_dd points to has been sent by HW (its DD
bit is set), then we are sure that at least quarter of the ring is ready
to be cleaned. If @xdp_tx_active is 0 which means that related xdp_ring
is not used for XDP_{TX, REDIRECT} workloads, then we know how many XSK
entries should placed to completion queue, IOW walking through the ring
can be skipped.
Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Alexander Lobakin <alexandr.lobakin@intel.com>
Acked-by: Magnus Karlsson <magnus.karlsson@intel.com>
Link: https://lore.kernel.org/bpf/20220125160446.78976-9-maciej.fijalkowski@intel.com
Diffstat (limited to 'tools/testing/selftests/bpf/trace_helpers.c')
0 files changed, 0 insertions, 0 deletions