[PATCH 4.19 19/42] net/mlx5e: Claim TC hw offloads support only under a proper build config

Greg Kroah-Hartman
2018-11-21T19:07:03Z

From: Or Gerlitz <ogerlitz@mellanox.com>

[ Upstream commit 077ecd785d90c6cbba08d719faa4be8561aa0a1e ]

Currently, we are only supporting tc hw offloads when the eswitch
support is compiled in, but we are not gating the adevertizment
of the NETIF_F_HW_TC feature on this config being set.

Fix it, and while doing that, also avoid dealing with the feature
on ethtool when the config is not set.

Fixes: e8f887ac6a45 ('net/mlx5e: Introduce tc offload support')
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Reviewed-by: Roi Dayan <roid@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_main.c | 6 ++++++
1 file changed, 6 insertions(+)

--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -3566,6 +3566,7 @@ static int set_feature_cvlan_filter(stru
return 0;
}

+#ifdef CONFIG_MLX5_ESWITCH
static int set_feature_tc_num_filters(struct net_device *netdev, bool enable)
{
struct mlx5e_priv *priv = netdev_priv(netdev);
@@ -3578,6 +3579,7 @@ static int set_feature_tc_num_filters(st

return 0;
}
+#endif

static int set_feature_rx_all(struct net_device *netdev, bool enable)
{
@@ -3676,7 +3678,9 @@ static int mlx5e_set_features(struct net
err |= MLX5E_HANDLE_FEATURE(NETIF_F_LRO, set_feature_lro);
err |= MLX5E_HANDLE_FEATURE(NETIF_F_HW_VLAN_CTAG_FILTER,
set_feature_cvlan_filter);
+#ifdef CONFIG_MLX5_ESWITCH
err |= MLX5E_HANDLE_FEATURE(NETIF_F_HW_TC, set_feature_tc_num_filters);
+#endif
err |= MLX5E_HANDLE_FEATURE(NETIF_F_RXALL, set_feature_rx_all);
err |= MLX5E_HANDLE_FEATURE(NETIF_F_RXFCS, set_feature_rx_fcs);
err |= MLX5E_HANDLE_FEATURE(NETIF_F_HW_VLAN_CTAG_RX, set_feature_rx_vlan);
@@ -4685,7 +4689,9 @@ static void mlx5e_build_nic_netdev(struc
FT_CAP(modify_root) &&
FT_CAP(identified_miss_table_mode) &&
FT_CAP(flow_table_modify)) {
+#ifdef CONFIG_MLX5_ESWITCH
netdev->hw_features |= NETIF_F_HW_TC;
+#endif
#ifdef CONFIG_MLX5_EN_ARFS
netdev->hw_features |= NETIF_F_NTUPLE;
#endif