From f6dc1264f1c01976a84239d1038359604ee42001 Mon Sep 17 00:00:00 2001 From: Paul Blakey Date: Mon, 24 Jun 2019 15:04:58 +0300 Subject: [PATCH] net/mlx5e: Disallow tc redirect offload cases we don't support After changing the parent_id to be the same for both NICs of same the hardware device, netdev_port_same_parent_id now returns true for more cases (all the lower devices in the hierarchy are on the same hardware device). If merged eswitch isn't enabled, these cases aren't supported, so disallow them. Signed-off-by: Paul Blakey Reviewed-by: Roi Dayan Signed-off-by: Saeed Mahameed --- .../ethernet/mellanox/mlx5/core/en/tc_tun.c | 4 +++- .../net/ethernet/mellanox/mlx5/core/en_tc.c | 22 +++++++++++++++---- .../net/ethernet/mellanox/mlx5/core/en_tc.h | 3 +++ 3 files changed, 24 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c index f5ad531e1749..3739646b653f 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c @@ -5,6 +5,7 @@ #include #include #include "en/tc_tun.h" +#include "en_tc.h" struct mlx5e_tc_tunnel *mlx5e_get_tc_tun(struct net_device *tunnel_dev) { @@ -47,7 +48,8 @@ static int get_route_and_out_devs(struct mlx5e_priv *priv, *route_dev = dev; if (is_vlan_dev(*route_dev)) *out_dev = uplink_dev; - else if (mlx5e_eswitch_rep(dev)) + else if (mlx5e_eswitch_rep(dev) && + mlx5e_is_valid_eswitch_fwd_dev(priv, dev)) *out_dev = *route_dev; else return -EOPNOTSUPP; diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c index 1453da6ef559..e6b199cd68ea 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c @@ -2802,6 +2802,16 @@ static int add_vlan_pop_action(struct mlx5e_priv *priv, return err; } +bool mlx5e_is_valid_eswitch_fwd_dev(struct mlx5e_priv *priv, + struct net_device *out_dev) +{ + if (is_merged_eswitch_dev(priv, out_dev)) + return true; + + return mlx5e_eswitch_rep(out_dev) && + same_hw_devs(priv, netdev_priv(out_dev)); +} + static int parse_tc_fdb_actions(struct mlx5e_priv *priv, struct flow_action *flow_action, struct mlx5e_tc_flow *flow, @@ -2867,9 +2877,7 @@ static int parse_tc_fdb_actions(struct mlx5e_priv *priv, action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST | MLX5_FLOW_CONTEXT_ACTION_COUNT; - if (netdev_port_same_parent_id(priv->netdev, - out_dev) || - is_merged_eswitch_dev(priv, out_dev)) { + if (netdev_port_same_parent_id(priv->netdev, out_dev)) { struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; struct net_device *uplink_dev = mlx5_eswitch_uplink_get_proto_dev(esw, REP_ETH); struct net_device *uplink_upper = netdev_master_upper_dev_get(uplink_dev); @@ -2886,6 +2894,7 @@ static int parse_tc_fdb_actions(struct mlx5e_priv *priv, if (err) return err; } + if (is_vlan_dev(parse_attr->filter_dev)) { err = add_vlan_pop_action(priv, attr, &action); @@ -2893,8 +2902,13 @@ static int parse_tc_fdb_actions(struct mlx5e_priv *priv, return err; } - if (!mlx5e_eswitch_rep(out_dev)) + if (!mlx5e_is_valid_eswitch_fwd_dev(priv, out_dev)) { + NL_SET_ERR_MSG_MOD(extack, + "devices are not on same switch HW, can't offload forwarding"); + pr_err("devices %s %s not on same switch HW, can't offload forwarding\n", + priv->netdev->name, out_dev->name); return -EOPNOTSUPP; + } out_priv = netdev_priv(out_dev); rpriv = out_priv->ppriv; diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.h b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.h index f62e81902d27..8f288cc53cee 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.h @@ -74,6 +74,9 @@ int mlx5e_tc_num_filters(struct mlx5e_priv *priv, int flags); void mlx5e_tc_reoffload_flows_work(struct work_struct *work); +bool mlx5e_is_valid_eswitch_fwd_dev(struct mlx5e_priv *priv, + struct net_device *out_dev); + #else /* CONFIG_MLX5_ESWITCH */ static inline int mlx5e_tc_nic_init(struct mlx5e_priv *priv) { return 0; } static inline void mlx5e_tc_nic_cleanup(struct mlx5e_priv *priv) {} -- 2.20.1