This is a note to let you know that I've just added the patch titled

net/mlx5e: Don't override vport admin link state in switchdev mode

to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: net-mlx5e-don-t-override-vport-admin-link-state-in-switchdev-mode.patch and it can be found in the queue-4.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From foo@baz Tue Apr 10 23:19:36 CEST 2018

From: Jianbo Liu jianbol@mellanox.com Date: Fri, 2 Mar 2018 02:09:08 +0000 Subject: net/mlx5e: Don't override vport admin link state in switchdev mode

From: Jianbo Liu jianbol@mellanox.com

The vport admin original link state will be re-applied after returning back to legacy mode, it is not right to change the admin link state value when in switchdev mode.

Use direct vport commands to alter logical vport state in netdev representor open/close flows rather than the administrative eswitch API.

Fixes: 20a1ea674783 ('net/mlx5e: Support VF vport link state control for SRIOV switchdev mode') Signed-off-by: Jianbo Liu jianbol@mellanox.com Reviewed-by: Roi Dayan roid@mellanox.com Reviewed-by: Or Gerlitz ogerlitz@mellanox.com Signed-off-by: Saeed Mahameed saeedm@mellanox.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/mellanox/mlx5/core/en_rep.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-)

--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c @@ -611,7 +611,6 @@ static int mlx5e_rep_open(struct net_dev struct mlx5e_priv *priv = netdev_priv(dev); struct mlx5e_rep_priv *rpriv = priv->ppriv; struct mlx5_eswitch_rep *rep = rpriv->rep; - struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; int err;

mutex_lock(&priv->state_lock); @@ -619,8 +618,9 @@ static int mlx5e_rep_open(struct net_dev if (err) goto unlock;

- if (!mlx5_eswitch_set_vport_state(esw, rep->vport, - MLX5_ESW_VPORT_ADMIN_STATE_UP)) + if (!mlx5_modify_vport_admin_state(priv->mdev, + MLX5_QUERY_VPORT_STATE_IN_OP_MOD_ESW_VPORT, + rep->vport, MLX5_ESW_VPORT_ADMIN_STATE_UP)) netif_carrier_on(dev);

unlock: @@ -633,11 +633,12 @@ static int mlx5e_rep_close(struct net_de struct mlx5e_priv *priv = netdev_priv(dev); struct mlx5e_rep_priv *rpriv = priv->ppriv; struct mlx5_eswitch_rep *rep = rpriv->rep; - struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; int ret;

mutex_lock(&priv->state_lock); - (void)mlx5_eswitch_set_vport_state(esw, rep->vport, MLX5_ESW_VPORT_ADMIN_STATE_DOWN); + mlx5_modify_vport_admin_state(priv->mdev, + MLX5_QUERY_VPORT_STATE_IN_OP_MOD_ESW_VPORT, + rep->vport, MLX5_ESW_VPORT_ADMIN_STATE_DOWN); ret = mlx5e_close_locked(dev); mutex_unlock(&priv->state_lock); return ret;

Patches currently in stable-queue which might be from jianbol@mellanox.com are

queue-4.15/net-mlx5e-fix-memory-usage-issues-in-offloading-tc-flows.patch queue-4.15/net-mlx5e-don-t-override-vport-admin-link-state-in-switchdev-mode.patch