ucc_geth: Reset BQL queue when stopping device

[ Upstream commit e15aa3b2b1388c399c1a2ce08550d2cc4f7e3e14 ]

After a timeout event caused by for example a broadcast storm, when
the MAC and PHY are reset, the BQL TX queue needs to be reset as
well. Otherwise, the device will exhibit severe performance issues
even after the storm has ended.

Co-authored-by: David Gounaris <david.gounaris@infinera.com>
Signed-off-by: Mathias Thore <mathias.thore@infinera.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/ethernet/freescale/ucc_geth.c b/drivers/net/ethernet/freescale/ucc_geth.c
index ef9bc26ebc1ad8ce59c41f10b276d09dbc2b94ce..714593023bbccbeb3e1a4e5dd56d82aee8ad3f92 100644 (file)
--- a/drivers/net/ethernet/freescale/ucc_geth.c
+++ b/drivers/net/ethernet/freescale/ucc_geth.c
@@ -1888,6 +1888,8 @@ static void ucc_geth_free_tx(struct ucc_geth_private *ugeth)
        u16 i, j;
        u8 __iomem *bd;
 
+       netdev_reset_queue(ugeth->ndev);
+
        ug_info = ugeth->ug_info;
        uf_info = &ug_info->uf_info;