This is a note to let you know that I've just added the patch titled
net: ena: Flush XDP packets on error.
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-ena-flush-xdp-packets-on-error.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 067c9ec47f0494ce29238d5a763ab8ddc5b2e725
Author: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
Date: Mon Sep 18 17:36:09 2023 +0200
net: ena: Flush XDP packets on error.
[ Upstream commit 6f411fb5ca9419090bee6a0a46425e0a5060b734 ]
xdp_do_flush() should be invoked before leaving the NAPI poll function
after a XDP-redirect. This is not the case if the driver leaves via
the error path (after having a redirect in one of its previous
iterations).
Invoke xdp_do_flush() also in the error path.
Cc: Arthur Kiyanovski <akiyano@xxxxxxxxxx>
Cc: David Arinzon <darinzon@xxxxxxxxxx>
Cc: Noam Dagan <ndagan@xxxxxxxxxx>
Cc: Saeed Bishara <saeedb@xxxxxxxxxx>
Cc: Shay Agroskin <shayagr@xxxxxxxxxx>
Fixes: a318c70ad152b ("net: ena: introduce XDP redirect implementation")
Acked-by: Arthur Kiyanovski <akiyano@xxxxxxxxxx>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
Acked-by: Jesper Dangaard Brouer <hawk@xxxxxxxxxx>
Signed-off-by: Paolo Abeni <pabeni@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.c b/drivers/net/ethernet/amazon/ena/ena_netdev.c
index f3673be4fc087..3eba01de95259 100644
--- a/drivers/net/ethernet/amazon/ena/ena_netdev.c
+++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c
@@ -1788,6 +1788,9 @@ static int ena_clean_rx_irq(struct ena_ring *rx_ring, struct napi_struct *napi,
return work_done;
error:
+ if (xdp_flags & ENA_XDP_REDIRECT)
+ xdp_do_flush();
+
adapter = netdev_priv(rx_ring->netdev);
if (rc == -ENOSPC) {
