[PATCH net v3 0/2] net/mlx5e: Prevent stale XSK buffer release on refill retries

[Jerome Tollet <jtollet@cisco.com>]

Prevent duplicate XSK buffer release when a deferred RX refill fails and
the same WQE is retried.

Patch 1 fixes legacy cyclic RQ. It is unchanged from v2 and retains
Dragos' Reviewed-by tag.

Patch 2 fixes the analogous striding-RQ MPWQE path pointed out by the
Sashiko automated review. Targeted fault injection forced three
consecutive allocation failures for one MPWQE. Stock freed the same 16
XSK buffer pointers three times; the fix freed each pointer only once,
made subsequent releases no-ops, and preserved the successful
allocation path's bitmap reset.

Changes in v3:
- Turn the submission into a two-patch series.
- Add the striding-RQ MPWQE fix and its dedicated Fixes tag.
- Rebase onto net/main at 4e15e89faac9.

v2: https://lore.kernel.org/netdev/20260820151558.11015-1-jtollet@cisco.com/

Jerome Tollet (2):
  net/mlx5e: Prevent stale XSK buffer release on refill retry
  net/mlx5e: Prevent stale XSK buffer release on MPWQE refill retry

 drivers/net/ethernet/mellanox/mlx5/core/en_rx.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

-- 
2.55.0