3.16.7-ckt10 -stable review patch. If anyone has any objections, please let me
know.
------------------
From: Ido Shamay <i...@mellanox.com>
commit e5eda89d97ec256ba14e7e861387cc0468259c18 upstream.
Netdevice registration should be performed a the end of the driver
initialization flow. If we don't do that, after calling register_netdevice,
device callbacks may be issued by higher layers of the stack before
final configuration of the device is done.
For example (VXLAN configuration race), mlx4_SET_PORT_VXLAN was issued
after the register_netdev command. System network scripts may configure
the interface (UP) right after the registration, which also attach
unicast VXLAN steering rule, before mlx4_SET_PORT_VXLAN was called,
causing the firmware to fail the rule attachment.
Fixes: 837052d0ccc5 ("net/mlx4_en: Add netdev support for TCP/IP offloads of
vxlan tunneling")
Signed-off-by: Ido Shamay <i...@mellanox.com>
Signed-off-by: Or Gerlitz <ogerl...@mellanox.com>
Signed-off-by: David S. Miller <da...@davemloft.net>
[ luis: backported to 3.16: adjusted context ]
Signed-off-by: Luis Henriques <luis.henriq...@canonical.com>
---
drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 15 ++++++++-------
1 file changed, 8 insertions(+), 7 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
index 04b2d8e117cb..1b67e902aee6 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
@@ -2619,13 +2619,6 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int
port,
netif_carrier_off(dev);
mlx4_en_set_default_moderation(priv);
- err = register_netdev(dev);
- if (err) {
- en_err(priv, "Netdev registration failed for port %d\n", port);
- goto out;
- }
- priv->registered = 1;
-
en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
@@ -2665,6 +2658,14 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int
port,
queue_delayed_work(mdev->workqueue, &priv->service_task,
SERVICE_TASK_DELAY);
+ err = register_netdev(dev);
+ if (err) {
+ en_err(priv, "Netdev registration failed for port %d\n", port);
+ goto out;
+ }
+
+ priv->registered = 1;
+
return 0;
out:
--
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