RE: [PATCH bpf-next] xsk: update rings for load-acquire/store-release semantics

From: Björn Töpel <redacted>

Currently, the AF_XDP rings uses fences for the kernel-side
produce/consume functions. By updating rings for
load-acquire/store-release semantics, the full barrier (smp_mb()) on
the consumer side can be replaced.

Signed-off-by: Björn Töpel <redacted>
---
 net/xdp/xsk_queue.h | 31 ++++++++++++++-----------------
 1 file changed, 14 insertions(+), 17 deletions(-)

diff --git a/net/xdp/xsk_queue.h b/net/xdp/xsk_queue.h
index bec2af11853a..2fff80576ee1 100644
--- a/net/xdp/xsk_queue.h
+++ b/net/xdp/xsk_queue.h

@@ -39,19 +39,18 @@ struct xsk_queue {
 	u64 invalid_descs;
 };