[PATCH 5.16 126/227] atl1c: fix tx timeout after link flap on Mikrotik 10/25G NIC

Greg Kroah-Hartman
2022-02-21T09:54:29Z

From: Gatis Peisenieks <gatis@mikrotik.com>

commit bf8e59fd315f304eb538546e35de6dc603e4709f upstream.

If NIC had packets in tx queue at the moment link down event
happened, it could result in tx timeout when link got back up.

Since device has more than one tx queue we need to reset them
accordingly.

Fixes: 057f4af2b171 ("atl1c: add 4 RX/TX queue support for Mikrotik 10/25G NIC")
Signed-off-by: Gatis Peisenieks <gatis@mikrotik.com>
Link: https://lore.kernel.org/r/20220211065123.4187615-1-gatis@mikrotik.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/atheros/atl1c/atl1c_main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
@@ -900,7 +900,7 @@ static void atl1c_clean_tx_ring(struct a
atl1c_clean_buffer(pdev, buffer_info);
}

- netdev_reset_queue(adapter->netdev);
+ netdev_tx_reset_queue(netdev_get_tx_queue(adapter->netdev, queue));

/* Zero out Tx-buffers */
memset(tpd_ring->desc, 0, sizeof(struct atl1c_tpd_desc) *