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| author | Maciej Fijalkowski <[email protected]> | 2022-01-25 16:04:46 +0000 |
|---|---|---|
| committer | Daniel Borkmann <[email protected]> | 2022-01-27 16:25:33 +0000 |
| commit | 59e92bfe4df71a833678a94b9947843a4c9f55bb (patch) | |
| tree | c2350d03fe3d1bc0860f7b084fc3f69d1725c1e0 /tools/testing/selftests/bpf/prog_tests/sockmap_basic.c | |
| parent | ice: xsk: Improve AF_XDP ZC Tx and use batching API (diff) | |
| download | kernel-59e92bfe4df71a833678a94b9947843a4c9f55bb.tar.gz kernel-59e92bfe4df71a833678a94b9947843a4c9f55bb.zip | |
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 <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
Reviewed-by: Alexander Lobakin <[email protected]>
Acked-by: Magnus Karlsson <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/sockmap_basic.c')
0 files changed, 0 insertions, 0 deletions