net/mlx4_en: Add DCB PFC support through CEE netlink commands
This patch adds support for reading and updating priority flow
control (PFC) attributes in the driver via netlink.
Signed-off-by: Rana Shahout <ranas@mellanox.com>
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Eugenia Emantayev <eugenia@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
index 8e318d2..d42083a 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
@@ -67,6 +67,17 @@
offset += priv->num_tx_rings_p_up;
}
+#ifdef CONFIG_MLX4_EN_DCB
+ if (!mlx4_is_slave(priv->mdev->dev)) {
+ if (up) {
+ priv->flags |= MLX4_EN_FLAG_DCB_ENABLED;
+ } else {
+ priv->flags &= ~MLX4_EN_FLAG_DCB_ENABLED;
+ priv->cee_params.dcb_cfg.pfc_state = false;
+ }
+ }
+#endif /* CONFIG_MLX4_EN_DCB */
+
return 0;
}
@@ -2815,6 +2826,9 @@
struct mlx4_en_priv *priv;
int i;
int err;
+#ifdef CONFIG_MLX4_EN_DCB
+ struct tc_configuration *tc;
+#endif
dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
MAX_TX_RINGS, MAX_RX_RINGS);
@@ -2881,6 +2895,17 @@
priv->msg_enable = MLX4_EN_MSG_LEVEL;
#ifdef CONFIG_MLX4_EN_DCB
if (!mlx4_is_slave(priv->mdev->dev)) {
+ priv->cee_params.dcbx_cap = DCB_CAP_DCBX_VER_CEE |
+ DCB_CAP_DCBX_HOST |
+ DCB_CAP_DCBX_VER_IEEE;
+ priv->flags |= MLX4_EN_DCB_ENABLED;
+ priv->cee_params.dcb_cfg.pfc_state = false;
+
+ for (i = 0; i < MLX4_EN_NUM_UP; i++) {
+ tc = &priv->cee_params.dcb_cfg.tc_config[i];
+ tc->dcb_pfc = pfc_disabled;
+ }
+
if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) {
dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
} else {