[net-next 12/12] net/mlx5e: Update ethtool setting of CQE compression

[Saeed Mahameed]

From: Aya Levin <a...@nvidia.com>

Remove restriction blocking configuration of CQE compression when PTP rx
filter is set. Instead turn on indication for RX PTP, and try to reopen
the channels.

Signed-off-by: Aya Levin <a...@nvidia.com>
Reviewed-by: Tariq Toukan <tar...@nvidia.com>
Signed-off-by: Saeed Mahameed <sae...@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en.h       |  1 +
 .../net/ethernet/mellanox/mlx5/core/en_ethtool.c   | 14 ++++++++------
 drivers/net/ethernet/mellanox/mlx5/core/en_main.c  |  2 +-
 3 files changed, 10 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h 
b/drivers/net/ethernet/mellanox/mlx5/core/en.h
index 2ad12ee9d100..b425b4a539bf 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h
@@ -1023,6 +1023,7 @@ int mlx5e_num_channels_changed(struct mlx5e_priv *priv);
 int mlx5e_num_channels_changed_ctx(struct mlx5e_priv *priv, void *context);
 void mlx5e_activate_priv_channels(struct mlx5e_priv *priv);
 void mlx5e_deactivate_priv_channels(struct mlx5e_priv *priv);
+int mlx5e_ptp_rx_manage_fs_ctx(struct mlx5e_priv *priv, void *ctx);
 
 void mlx5e_build_default_indir_rqt(u32 *indirection_rqt, int len,
                                   int num_channels);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c 
b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
index cf319f06521d..964558086ad6 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
@@ -34,6 +34,7 @@
 #include "en/port.h"
 #include "en/params.h"
 #include "en/xsk/pool.h"
+#include "en/ptp.h"
 #include "lib/clock.h"
 
 void mlx5e_ethtool_get_drvinfo(struct mlx5e_priv *priv,
@@ -1865,13 +1866,19 @@ int mlx5e_modify_rx_cqe_compression_locked(struct 
mlx5e_priv *priv, bool new_val
 
        new_channels.params = priv->channels.params;
        MLX5E_SET_PFLAG(&new_channels.params, MLX5E_PFLAG_RX_CQE_COMPRESS, 
new_val);
+       if (priv->tstamp.rx_filter != HWTSTAMP_FILTER_NONE)
+               new_channels.params.ptp_rx = new_val;
 
        if (!test_bit(MLX5E_STATE_OPENED, &priv->state)) {
                priv->channels.params = new_channels.params;
                return 0;
        }
 
-       err = mlx5e_safe_switch_channels(priv, &new_channels, NULL, NULL);
+       if (new_channels.params.ptp_rx == priv->channels.params.ptp_rx)
+               err = mlx5e_safe_switch_channels(priv, &new_channels, NULL, 
NULL);
+       else
+               err = mlx5e_safe_switch_channels(priv, &new_channels, 
mlx5e_ptp_rx_manage_fs_ctx,
+                                                &new_channels.params.ptp_rx);
        if (err)
                return err;
 
@@ -1892,11 +1899,6 @@ static int set_pflag_rx_cqe_compress(struct net_device 
*netdev,
        if (!MLX5_CAP_GEN(mdev, cqe_compression))
                return -EOPNOTSUPP;
 
-       if (enable && priv->tstamp.rx_filter != HWTSTAMP_FILTER_NONE) {
-               netdev_err(netdev, "Can't enable cqe compression while 
timestamping is enabled.\n");
-               return -EINVAL;
-       }
-
        err = mlx5e_modify_rx_cqe_compression_locked(priv, enable);
        if (err)
                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 c6227725733a..db2942b61fd5 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -3970,7 +3970,7 @@ static int mlx5e_change_nic_mtu(struct net_device 
*netdev, int new_mtu)
        return mlx5e_change_mtu(netdev, new_mtu, mlx5e_set_dev_port_mtu_ctx);
 }
 
-static int mlx5e_ptp_rx_manage_fs_ctx(struct mlx5e_priv *priv, void *ctx)
+int mlx5e_ptp_rx_manage_fs_ctx(struct mlx5e_priv *priv, void *ctx)
 {
        bool set  = *(bool *)ctx;
 
-- 
2.30.2