From c5447c70594b6a8e1e62a9dd9373813cb38f1c69 Mon Sep 17 00:00:00 2001 From: Mark Bloch Date: Tue, 23 Jan 2018 11:24:13 +0000 Subject: [PATCH] net/mlx5: E-Switch, Reload IB interface when switching devlink modes Up until this point it wasn't possible to activate IB representors when switching to switchdev mode, remove this limitation. We trigger reload of the PF IB interface in order to make sure that already allocated resources are invalid and new resources will be opened correctly with all the limitations of switchdev mode applied (only raw packet capabilities, without RoCE). We also move the remove/add to a place where the E-Switch mode is set/unset to better control when to trigger this action, this will allow the IB side to start in the correct mode. For better code reuse, create a function which reloads an interface and export it. Signed-off-by: Mark Bloch Reviewed-by: Or Gerlitz Signed-off-by: Leon Romanovsky Signed-off-by: Saeed Mahameed --- drivers/net/ethernet/mellanox/mlx5/core/dev.c | 8 ++++++++ drivers/net/ethernet/mellanox/mlx5/core/eswitch.c | 17 +++++++++++++++-- .../net/ethernet/mellanox/mlx5/core/eswitch_offloads.c | 17 ++--------------- drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h | 1 + 4 files changed, 26 insertions(+), 17 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/dev.c b/drivers/net/ethernet/mellanox/mlx5/core/dev.c index 17b7232..b994b80 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/dev.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/dev.c @@ -337,6 +337,14 @@ void mlx5_unregister_interface(struct mlx5_interface *intf) } EXPORT_SYMBOL(mlx5_unregister_interface); +void mlx5_reload_interface(struct mlx5_core_dev *mdev, int protocol) +{ + mutex_lock(&mlx5_intf_mutex); + mlx5_remove_dev_by_protocol(mdev, protocol); + mlx5_add_dev_by_protocol(mdev, protocol); + mutex_unlock(&mlx5_intf_mutex); +} + void *mlx5_get_protocol_dev(struct mlx5_core_dev *mdev, int protocol) { struct mlx5_priv *priv = &mdev->priv; diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c index aec4653..964cd8c 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c @@ -1619,10 +1619,14 @@ int mlx5_eswitch_enable_sriov(struct mlx5_eswitch *esw, int nvfs, int mode) esw_info(esw->dev, "E-Switch enable SRIOV: nvfs(%d) mode (%d)\n", nvfs, mode); esw->mode = mode; - if (mode == SRIOV_LEGACY) + if (mode == SRIOV_LEGACY) { err = esw_create_legacy_fdb_table(esw, nvfs + 1); - else + } else { + mlx5_reload_interface(esw->dev, MLX5_INTERFACE_PROTOCOL_IB); + err = esw_offloads_init(esw, nvfs + 1); + } + if (err) goto abort; @@ -1644,12 +1648,17 @@ int mlx5_eswitch_enable_sriov(struct mlx5_eswitch *esw, int nvfs, int mode) abort: esw->mode = SRIOV_NONE; + + if (mode == SRIOV_OFFLOADS) + mlx5_reload_interface(esw->dev, MLX5_INTERFACE_PROTOCOL_IB); + return err; } void mlx5_eswitch_disable_sriov(struct mlx5_eswitch *esw) { struct esw_mc_addr *mc_promisc; + int old_mode; int nvports; int i; @@ -1675,7 +1684,11 @@ void mlx5_eswitch_disable_sriov(struct mlx5_eswitch *esw) else if (esw->mode == SRIOV_OFFLOADS) esw_offloads_cleanup(esw, nvports); + old_mode = esw->mode; esw->mode = SRIOV_NONE; + + if (old_mode == SRIOV_OFFLOADS) + mlx5_reload_interface(esw->dev, MLX5_INTERFACE_PROTOCOL_IB); } int mlx5_eswitch_init(struct mlx5_core_dev *dev) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c index 0692d28..0a8303c 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c @@ -827,14 +827,9 @@ int esw_offloads_init(struct mlx5_eswitch *esw, int nvports) { int err; - /* disable PF RoCE so missed packets don't go through RoCE steering */ - mlx5_dev_list_lock(); - mlx5_remove_dev_by_protocol(esw->dev, MLX5_INTERFACE_PROTOCOL_IB); - mlx5_dev_list_unlock(); - err = esw_create_offloads_fdb_tables(esw, nvports); if (err) - goto create_fdb_err; + return err; err = esw_create_offloads_table(esw); if (err) @@ -859,12 +854,6 @@ create_fg_err: create_ft_err: esw_destroy_offloads_fdb_tables(esw); -create_fdb_err: - /* enable back PF RoCE */ - mlx5_dev_list_lock(); - mlx5_add_dev_by_protocol(esw->dev, MLX5_INTERFACE_PROTOCOL_IB); - mlx5_dev_list_unlock(); - return err; } @@ -882,9 +871,7 @@ static int esw_offloads_stop(struct mlx5_eswitch *esw) } /* enable back PF RoCE */ - mlx5_dev_list_lock(); - mlx5_add_dev_by_protocol(esw->dev, MLX5_INTERFACE_PROTOCOL_IB); - mlx5_dev_list_unlock(); + mlx5_reload_interface(esw->dev, MLX5_INTERFACE_PROTOCOL_IB); return err; } diff --git a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h index ee1a42a..4e25f2b 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h @@ -201,4 +201,5 @@ static inline int mlx5_lag_is_lacp_owner(struct mlx5_core_dev *dev) int mlx5_lag_allow(struct mlx5_core_dev *dev); int mlx5_lag_forbid(struct mlx5_core_dev *dev); +void mlx5_reload_interface(struct mlx5_core_dev *mdev, int protocol); #endif /* __MLX5_CORE_H__ */ -- 2.7.4