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Date: Fri, 22 Apr 2016 22:00:42 +0300
From: Saeed Mahameed <saeedm@...lanox.com>
To: "David S. Miller" <davem@...emloft.net>
Cc: netdev@...r.kernel.org, Or Gerlitz <ogerlitz@...lanox.com>,
Tal Alon <talal@...lanox.com>,
Eran Ben Elisha <eranbe@...lanox.com>,
Gal Pressman <galp@...lanox.com>,
Saeed Mahameed <saeedm@...lanox.com>
Subject: [PATCH net-next 07/12] net/mlx5e: Add support for RXALL netdev feature
From: Eran Ben Elisha <eranbe@...lanox.com>
Introduce new access register named Ports Check Mask Register (PCMR) to
control all HW checks on port. With this register, the driver can
enable/disable Hardware FCS validation.
When RXALL is enabled/disabled using ndo_set_features, enable/disable
fcs check at HW.
User can change HW configuration using rx-all flag at ethtool.
Signed-off-by: Eran Ben Elisha <eranbe@...lanox.com>
Signed-off-by: Gal Pressman <galp@...lanox.com>
Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
---
drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 20 ++++++++
drivers/net/ethernet/mellanox/mlx5/core/port.c | 49 +++++++++++++++++++++
include/linux/mlx5/driver.h | 1 +
include/linux/mlx5/port.h | 4 ++
4 files changed, 74 insertions(+), 0 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index d82bc6b..ad0cb4a 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -2139,6 +2139,14 @@ static int set_feature_tc_num_filters(struct net_device *netdev, bool enable)
return 0;
}
+static int set_feature_rx_all(struct net_device *netdev, bool enable)
+{
+ struct mlx5e_priv *priv = netdev_priv(netdev);
+ struct mlx5_core_dev *mdev = priv->mdev;
+
+ return mlx5_set_port_fcs(mdev, !enable);
+}
+
static int mlx5e_handle_feature(struct net_device *netdev,
netdev_features_t wanted_features,
netdev_features_t feature,
@@ -2174,6 +2182,8 @@ static int mlx5e_set_features(struct net_device *netdev,
set_feature_vlan_filter);
err |= mlx5e_handle_feature(netdev, features, NETIF_F_HW_TC,
set_feature_tc_num_filters);
+ err |= mlx5e_handle_feature(netdev, features, NETIF_F_RXALL,
+ set_feature_rx_all);
return err ? -EINVAL : 0;
}
@@ -2564,6 +2574,8 @@ static void mlx5e_build_netdev(struct net_device *netdev)
{
struct mlx5e_priv *priv = netdev_priv(netdev);
struct mlx5_core_dev *mdev = priv->mdev;
+ bool fcs_supported;
+ bool fcs_enabled;
SET_NETDEV_DEV(netdev, &mdev->pdev->dev);
@@ -2607,10 +2619,18 @@ static void mlx5e_build_netdev(struct net_device *netdev)
netdev->hw_enc_features |= NETIF_F_GSO_UDP_TUNNEL;
}
+ mlx5_query_port_fcs(mdev, &fcs_supported, &fcs_enabled);
+
+ if (fcs_supported)
+ netdev->hw_features |= NETIF_F_RXALL;
+
netdev->features = netdev->hw_features;
if (!priv->params.lro_en)
netdev->features &= ~NETIF_F_LRO;
+ if (fcs_enabled)
+ netdev->features &= ~NETIF_F_RXALL;
+
#define FT_CAP(f) MLX5_CAP_FLOWTABLE(mdev, flow_table_properties_nic_receive.f)
if (FT_CAP(flow_modify_en) &&
FT_CAP(modify_root) &&
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/port.c b/drivers/net/ethernet/mellanox/mlx5/core/port.c
index ae378c5..c37740f 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/port.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/port.c
@@ -607,3 +607,52 @@ int mlx5_query_port_wol(struct mlx5_core_dev *mdev, u8 *wol_mode)
return err;
}
EXPORT_SYMBOL_GPL(mlx5_query_port_wol);
+
+static int mlx5_query_ports_check(struct mlx5_core_dev *mdev, u32 *out,
+ int outlen)
+{
+ u32 in[MLX5_ST_SZ_DW(pcmr_reg)];
+
+ memset(in, 0, sizeof(in));
+ MLX5_SET(pcmr_reg, in, local_port, 1);
+
+ return mlx5_core_access_reg(mdev, in, sizeof(in), out,
+ outlen, MLX5_REG_PCMR, 0, 0);
+}
+
+static int mlx5_set_ports_check(struct mlx5_core_dev *mdev, u32 *in, int inlen)
+{
+ u32 out[MLX5_ST_SZ_DW(pcmr_reg)];
+
+ return mlx5_core_access_reg(mdev, in, inlen, out,
+ sizeof(out), MLX5_REG_PCMR, 0, 1);
+}
+
+int mlx5_set_port_fcs(struct mlx5_core_dev *mdev, u8 enable)
+{
+ u32 in[MLX5_ST_SZ_DW(pcmr_reg)];
+
+ memset(in, 0, sizeof(in));
+ MLX5_SET(pcmr_reg, in, local_port, 1);
+ MLX5_SET(pcmr_reg, in, fcs_chk, enable);
+
+ return mlx5_set_ports_check(mdev, in, sizeof(in));
+}
+
+void mlx5_query_port_fcs(struct mlx5_core_dev *mdev, bool *supported,
+ bool *enabled)
+{
+ u32 out[MLX5_ST_SZ_DW(pcmr_reg)];
+ /* Default values for FW which do not support MLX5_REG_PCMR */
+ *supported = false;
+ *enabled = true;
+
+ if (!MLX5_CAP_GEN(mdev, ports_check))
+ return;
+
+ if (mlx5_query_ports_check(mdev, out, sizeof(out)))
+ return;
+
+ *supported = !!(MLX5_GET(pcmr_reg, out, fcs_cap));
+ *enabled = !!(MLX5_GET(pcmr_reg, out, fcs_chk));
+}
diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h
index dcd5ac8..497a4db 100644
--- a/include/linux/mlx5/driver.h
+++ b/include/linux/mlx5/driver.h
@@ -112,6 +112,7 @@ enum {
MLX5_REG_PMPE = 0x5010,
MLX5_REG_PELC = 0x500e,
MLX5_REG_PVLC = 0x500f,
+ MLX5_REG_PCMR = 0x5041,
MLX5_REG_PMLP = 0, /* TBD */
MLX5_REG_NODE_DESC = 0x6001,
MLX5_REG_HOST_ENDIANNESS = 0x7004,
diff --git a/include/linux/mlx5/port.h b/include/linux/mlx5/port.h
index a1d145a..577e953 100644
--- a/include/linux/mlx5/port.h
+++ b/include/linux/mlx5/port.h
@@ -84,4 +84,8 @@ int mlx5_query_port_ets_rate_limit(struct mlx5_core_dev *mdev,
int mlx5_set_port_wol(struct mlx5_core_dev *mdev, u8 wol_mode);
int mlx5_query_port_wol(struct mlx5_core_dev *mdev, u8 *wol_mode);
+int mlx5_set_port_fcs(struct mlx5_core_dev *mdev, u8 enable);
+void mlx5_query_port_fcs(struct mlx5_core_dev *mdev, bool *supported,
+ bool *enabled);
+
#endif /* __MLX5_PORT_H__ */
--
1.7.1
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