diff mbox series

[net-next] eth: mlx5: let NETIF_F_NTUPLE float when ARFS is not enabled

Message ID 20240710175502.760194-1-kuba@kernel.org (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series [net-next] eth: mlx5: let NETIF_F_NTUPLE float when ARFS is not enabled | expand

Checks

Context Check Description
netdev/series_format success Single patches do not need cover letters
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers warning 2 maintainers not CCed: leon@kernel.org linux-rdma@vger.kernel.org
netdev/build_clang success Errors and warnings before: 821 this patch: 821
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 822 this patch: 822
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 94 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/build_32bit success Manual override
netdev/contest success net-next-2024-07-11--18-00 (tests: 696)

Commit Message

Jakub Kicinski July 10, 2024, 5:55 p.m. UTC
ARFS depends on NTUPLE filters, but the inverse is not true.
Drivers which don't support ARFS commonly still support NTUPLE
filtering. mlx5 has a Kconfig option to disable ARFS (MLX5_EN_ARFS)
and does not advertise NTUPLE filters as a feature at all when ARFS
is compiled out. That's not correct, ntuple filters indeed still work
just fine (as long as MLX5_EN_RXNFC is enabled).

This is needed to make the RSS test not skip all RSS context
related testing.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
CC: tariqt@nvidia.com
CC: rrameshbabu@nvidia.com
CC: saeedm@nvidia.com
CC: yuehaibing@huawei.com
CC: horms@kernel.org
CC: jacob.e.keller@intel.com
CC: afaris@nvidia.com
---
 drivers/net/ethernet/mellanox/mlx5/core/en/fs.h     | 13 +++++++++++++
 .../net/ethernet/mellanox/mlx5/core/en_ethtool.c    |  2 +-
 drivers/net/ethernet/mellanox/mlx5/core/en_fs.c     |  5 ++---
 drivers/net/ethernet/mellanox/mlx5/core/en_main.c   |  6 +++---
 .../net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c   |  8 +++-----
 5 files changed, 22 insertions(+), 12 deletions(-)

Comments

Simon Horman July 11, 2024, 1:30 p.m. UTC | #1
On Wed, Jul 10, 2024 at 10:55:02AM -0700, Jakub Kicinski wrote:
> ARFS depends on NTUPLE filters, but the inverse is not true.
> Drivers which don't support ARFS commonly still support NTUPLE
> filtering. mlx5 has a Kconfig option to disable ARFS (MLX5_EN_ARFS)
> and does not advertise NTUPLE filters as a feature at all when ARFS
> is compiled out. That's not correct, ntuple filters indeed still work
> just fine (as long as MLX5_EN_RXNFC is enabled).
> 
> This is needed to make the RSS test not skip all RSS context
> related testing.
> 
> Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Reviewed-by: Simon Horman <horms@kernel.org>
diff mbox series

Patch

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/fs.h b/drivers/net/ethernet/mellanox/mlx5/core/en/fs.h
index 4d6225e0eec7..1e8b7d330701 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/fs.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/fs.h
@@ -154,6 +154,19 @@  struct mlx5e_tc_table *mlx5e_fs_get_tc(struct mlx5e_flow_steering *fs);
 struct mlx5e_l2_table *mlx5e_fs_get_l2(struct mlx5e_flow_steering *fs);
 struct mlx5_flow_namespace *mlx5e_fs_get_ns(struct mlx5e_flow_steering *fs, bool egress);
 void mlx5e_fs_set_ns(struct mlx5e_flow_steering *fs, struct mlx5_flow_namespace *ns, bool egress);
+
+static inline bool mlx5e_fs_has_arfs(struct net_device *netdev)
+{
+	return IS_ENABLED(CONFIG_MLX5_EN_ARFS) &&
+		netdev->hw_features & NETIF_F_NTUPLE;
+}
+
+static inline bool mlx5e_fs_want_arfs(struct net_device *netdev)
+{
+	return IS_ENABLED(CONFIG_MLX5_EN_ARFS) &&
+		netdev->features & NETIF_F_NTUPLE;
+}
+
 #ifdef CONFIG_MLX5_EN_RXNFC
 struct mlx5e_ethtool_steering *mlx5e_fs_get_ethtool(struct mlx5e_flow_steering *fs);
 #endif
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
index 3320f12ba2db..5582c93a62f1 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
@@ -525,7 +525,7 @@  int mlx5e_ethtool_set_channels(struct mlx5e_priv *priv,
 
 	opened = test_bit(MLX5E_STATE_OPENED, &priv->state);
 
-	arfs_enabled = opened && (priv->netdev->features & NETIF_F_NTUPLE);
+	arfs_enabled = opened && mlx5e_fs_want_arfs(priv->netdev);
 	if (arfs_enabled)
 		mlx5e_arfs_disable(priv->fs);
 
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c b/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c
index 8c5b291a171f..05058710d2c7 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c
@@ -1307,8 +1307,7 @@  int mlx5e_create_flow_steering(struct mlx5e_flow_steering *fs,
 		return -EOPNOTSUPP;
 
 	mlx5e_fs_set_ns(fs, ns, false);
-	err = mlx5e_arfs_create_tables(fs, rx_res,
-				       !!(netdev->hw_features & NETIF_F_NTUPLE));
+	err = mlx5e_arfs_create_tables(fs, rx_res, mlx5e_fs_has_arfs(netdev));
 	if (err) {
 		fs_err(fs, "Failed to create arfs tables, err=%d\n", err);
 		netdev->hw_features &= ~NETIF_F_NTUPLE;
@@ -1355,7 +1354,7 @@  int mlx5e_create_flow_steering(struct mlx5e_flow_steering *fs,
 err_destroy_inner_ttc_table:
 	mlx5e_destroy_inner_ttc_table(fs);
 err_destroy_arfs_tables:
-	mlx5e_arfs_destroy_tables(fs, !!(netdev->hw_features & NETIF_F_NTUPLE));
+	mlx5e_arfs_destroy_tables(fs, mlx5e_fs_has_arfs(netdev));
 
 	return err;
 }
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index ff335527c10a..c2c56ffc08d5 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -5556,7 +5556,7 @@  static void mlx5e_build_nic_netdev(struct net_device *netdev)
 #if IS_ENABLED(CONFIG_MLX5_CLS_ACT)
 		netdev->hw_features      |= NETIF_F_HW_TC;
 #endif
-#ifdef CONFIG_MLX5_EN_ARFS
+#if IS_ENABLED(CONFIG_MLX5_EN_ARFS) || IS_ENABLED(CONFIG_MLX5_EN_RXNFC)
 		netdev->hw_features	 |= NETIF_F_NTUPLE;
 #endif
 	}
@@ -5731,7 +5731,7 @@  static int mlx5e_init_nic_rx(struct mlx5e_priv *priv)
 err_tc_nic_cleanup:
 	mlx5e_tc_nic_cleanup(priv);
 err_destroy_flow_steering:
-	mlx5e_destroy_flow_steering(priv->fs, !!(priv->netdev->hw_features & NETIF_F_NTUPLE),
+	mlx5e_destroy_flow_steering(priv->fs, mlx5e_fs_has_arfs(priv->netdev),
 				    priv->profile);
 err_destroy_rx_res:
 	mlx5e_rx_res_destroy(priv->rx_res);
@@ -5747,7 +5747,7 @@  static void mlx5e_cleanup_nic_rx(struct mlx5e_priv *priv)
 {
 	mlx5e_accel_cleanup_rx(priv);
 	mlx5e_tc_nic_cleanup(priv);
-	mlx5e_destroy_flow_steering(priv->fs, !!(priv->netdev->hw_features & NETIF_F_NTUPLE),
+	mlx5e_destroy_flow_steering(priv->fs, mlx5e_fs_has_arfs(priv->netdev),
 				    priv->profile);
 	mlx5e_rx_res_destroy(priv->rx_res);
 	priv->rx_res = NULL;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c b/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c
index 8e0404c0d1ca..0979d672d47f 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c
@@ -372,7 +372,7 @@  static int mlx5i_create_flow_steering(struct mlx5e_priv *priv)
 
 	mlx5e_fs_set_ns(priv->fs, ns, false);
 	err = mlx5e_arfs_create_tables(priv->fs, priv->rx_res,
-				       !!(priv->netdev->hw_features & NETIF_F_NTUPLE));
+				       mlx5e_fs_has_arfs(priv->netdev));
 	if (err) {
 		netdev_err(priv->netdev, "Failed to create arfs tables, err=%d\n",
 			   err);
@@ -391,8 +391,7 @@  static int mlx5i_create_flow_steering(struct mlx5e_priv *priv)
 	return 0;
 
 err_destroy_arfs_tables:
-	mlx5e_arfs_destroy_tables(priv->fs,
-				  !!(priv->netdev->hw_features & NETIF_F_NTUPLE));
+	mlx5e_arfs_destroy_tables(priv->fs, mlx5e_fs_has_arfs(priv->netdev));
 
 	return err;
 }
@@ -400,8 +399,7 @@  static int mlx5i_create_flow_steering(struct mlx5e_priv *priv)
 static void mlx5i_destroy_flow_steering(struct mlx5e_priv *priv)
 {
 	mlx5e_destroy_ttc_table(priv->fs);
-	mlx5e_arfs_destroy_tables(priv->fs,
-				  !!(priv->netdev->hw_features & NETIF_F_NTUPLE));
+	mlx5e_arfs_destroy_tables(priv->fs, mlx5e_fs_has_arfs(priv->netdev));
 	mlx5e_ethtool_cleanup_steering(priv->fs);
 }