From bcf87f1dbbec0d9abaf89073dd761a41876bc6c1 Mon Sep 17 00:00:00 2001 From: Mark Bloch Date: Tue, 16 Jan 2018 15:02:36 +0000 Subject: [PATCH] IB/mlx5: Listen to netdev register/unresiter events in switchdev mode Currently we listen to netdev register/unregister event based on PCI device. When in switchdev mode PF and representors share the same PCI device, so in order to pair ib device and netdev in switchdev mode compare the netdev that triggered the event to that of the representor. Expose a function that lets you receive the netdev associated what a given representor. Signed-off-by: Mark Bloch Reviewed-by: Or Gerlitz Signed-off-by: Leon Romanovsky Signed-off-by: Saeed Mahameed --- drivers/infiniband/hw/mlx5/ib_rep.h | 8 ++++++++ drivers/infiniband/hw/mlx5/main.c | 13 +++++++++++-- 2 files changed, 19 insertions(+), 2 deletions(-) diff --git a/drivers/infiniband/hw/mlx5/ib_rep.h b/drivers/infiniband/hw/mlx5/ib_rep.h index 64ab54b82820..923ad4cba941 100644 --- a/drivers/infiniband/hw/mlx5/ib_rep.h +++ b/drivers/infiniband/hw/mlx5/ib_rep.h @@ -17,6 +17,8 @@ struct mlx5_eswitch_rep *mlx5_ib_vport_rep(struct mlx5_eswitch *esw, int vport_index); void mlx5_ib_register_vport_reps(struct mlx5_ib_dev *dev); void mlx5_ib_unregister_vport_reps(struct mlx5_ib_dev *dev); +struct net_device *mlx5_ib_get_rep_netdev(struct mlx5_eswitch *esw, + int vport_index); #else /* CONFIG_MLX5_ESWITCH */ static inline u8 mlx5_ib_eswitch_mode(struct mlx5_eswitch *esw) { @@ -39,6 +41,12 @@ struct mlx5_eswitch_rep *mlx5_ib_vport_rep(struct mlx5_eswitch *esw, static inline void mlx5_ib_register_vport_reps(struct mlx5_ib_dev *dev) {} static inline void mlx5_ib_unregister_vport_reps(struct mlx5_ib_dev *dev) {} +static inline +struct net_device *mlx5_ib_get_rep_netdev(struct mlx5_eswitch *esw, + int vport_index) +{ + return NULL; +} #endif static inline diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index 5624c5eba2ed..bc97c73704c4 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -155,10 +155,19 @@ static int mlx5_netdev_event(struct notifier_block *this, case NETDEV_REGISTER: case NETDEV_UNREGISTER: write_lock(&roce->netdev_lock); + if (ibdev->rep) { + struct mlx5_eswitch *esw = ibdev->mdev->priv.eswitch; + struct net_device *rep_ndev; - if (ndev->dev.parent == &mdev->pdev->dev) - roce->netdev = (event == NETDEV_UNREGISTER) ? + rep_ndev = mlx5_ib_get_rep_netdev(esw, + ibdev->rep->vport); + if (rep_ndev == ndev) + roce->netdev = (event == NETDEV_UNREGISTER) ? NULL : ndev; + } else if (ndev->dev.parent == &ibdev->mdev->pdev->dev) { + roce->netdev = (event == NETDEV_UNREGISTER) ? + NULL : ndev; + } write_unlock(&roce->netdev_lock); break;