net/mlx5e: Retrieve the switchdev id from the firmware only once

Avoid firmware command execution each time the switchdev HW ID attr get
call is made. We do that by reading the ID (PF NIC MAC) only once at
load time and store it on the representor structure.

Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 65258b2595798b6c96789c8c72f8fd8ebf3de305..03d944c0077eed75d6c6e8d9e27cfc0e03ff83ce 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -3387,6 +3387,7 @@ static void mlx5e_nic_enable(struct mlx5e_priv *priv)
        queue_work(priv->wq, &priv->set_rx_mode_work);
 
        if (MLX5_CAP_GEN(mdev, vport_group_manager)) {
+               mlx5_query_nic_vport_mac_address(mdev, 0, rep.hw_id);
                rep.load = mlx5e_nic_rep_load;
                rep.unload = mlx5e_nic_rep_unload;
                rep.vport = 0;
@@ -3505,16 +3506,20 @@ static void mlx5e_register_vport_rep(struct mlx5_core_dev *mdev)
        struct mlx5_eswitch *esw = mdev->priv.eswitch;
        int total_vfs = MLX5_TOTAL_VPORTS(mdev);
        int vport;
+       u8 mac[ETH_ALEN];
 
        if (!MLX5_CAP_GEN(mdev, vport_group_manager))
                return;
 
+       mlx5_query_nic_vport_mac_address(mdev, 0, mac);
+
        for (vport = 1; vport < total_vfs; vport++) {
                struct mlx5_eswitch_rep rep;
 
                rep.load = mlx5e_vport_rep_load;
                rep.unload = mlx5e_vport_rep_unload;
                rep.vport = vport;
+               ether_addr_copy(rep.hw_id, mac);
                mlx5_eswitch_register_vport_rep(esw, &rep);
        }
 }

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
index 1c7d8b8314bf43cc084aad96f5d4515dedfc36f3..134de4a11f1d9e65a4cad91be63638884e1a4706 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
@@ -135,17 +135,16 @@ static const struct ethtool_ops mlx5e_rep_ethtool_ops = {
 int mlx5e_attr_get(struct net_device *dev, struct switchdev_attr *attr)
 {
        struct mlx5e_priv *priv = netdev_priv(dev);
+       struct mlx5_eswitch_rep *rep = priv->ppriv;
        struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
-       u8 mac[ETH_ALEN];
 
        if (esw->mode == SRIOV_NONE)
                return -EOPNOTSUPP;
 
        switch (attr->id) {
        case SWITCHDEV_ATTR_ID_PORT_PARENT_ID:
-               mlx5_query_nic_vport_mac_address(priv->mdev, 0, mac);
                attr->u.ppid.id_len = ETH_ALEN;
-               memcpy(&attr->u.ppid.id, &mac, ETH_ALEN);
+               ether_addr_copy(attr->u.ppid.id, rep->hw_id);
                break;
        default:
                return -EOPNOTSUPP;

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
index c0b05603fc31e54a4068d4b4144284ac338d4d4d..a96140971d77a5a9fd63c019135a15354c21b04f 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
@@ -174,6 +174,7 @@ struct mlx5_eswitch_rep {
        void                  *priv_data;
        struct list_head       vport_sqs_list;
        bool                   valid;
+       u8                     hw_id[ETH_ALEN];
 };
 
 struct mlx5_esw_offload {