netdev - [net-next 13/14] net/mlx5e: Add listener to DMAC filter trap event

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Message-ID: <20210126232419.175836-14-saeedm@nvidia.com>
Date:   Tue, 26 Jan 2021 15:24:18 -0800
From:   Saeed Mahameed <saeedm@...dia.com>
To:     Jakub Kicinski <kuba@...nel.org>,
        "David S. Miller" <davem@...emloft.net>
CC:     <netdev@...r.kernel.org>, Aya Levin <ayal@...dia.com>,
        Moshe Shemesh <moshe@...dia.com>,
        Tariq Toukan <tariqt@...dia.com>,
        Saeed Mahameed <saeedm@...dia.com>
Subject: [net-next 13/14] net/mlx5e: Add listener to DMAC filter trap event

From: Aya Levin <ayal@...dia.com>

Add support for trapping packets which didn't match any DMAC in the MAC
table. Add a listener which adds/removes MAC trap rule in the flow
steering according to the trap's action trap/drop.

Signed-off-by: Aya Levin <ayal@...dia.com>
Reviewed-by: Moshe Shemesh <moshe@...dia.com>
Reviewed-by: Tariq Toukan <tariqt@...dia.com>
Signed-off-by: Tariq Toukan <tariqt@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en/trap.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/trap.c b/drivers/net/ethernet/mellanox/mlx5/core/en/trap.c
index 5507efacb9dc..d078281dbd1d 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/trap.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/trap.c
@@ -360,6 +360,11 @@ static int mlx5e_handle_action_trap(struct mlx5e_priv *priv, int trap_id)
 		if (err)
 			goto err_out;
 		break;
+	case DEVLINK_TRAP_GENERIC_ID_DMAC_FILTER:
+		err = mlx5e_add_mac_trap(priv, trap_id, mlx5e_trap_get_tirn(priv->en_trap));
+		if (err)
+			goto err_out;
+		break;
 	default:
 		netdev_warn(priv->netdev, "%s: Unknown trap id %d\n", __func__, trap_id);
 		err = -EINVAL;
@@ -379,6 +384,9 @@ static int mlx5e_handle_action_drop(struct mlx5e_priv *priv, int trap_id)
 	case DEVLINK_TRAP_GENERIC_ID_INGRESS_VLAN_FILTER:
 		mlx5e_remove_vlan_trap(priv);
 		break;
+	case DEVLINK_TRAP_GENERIC_ID_DMAC_FILTER:
+		mlx5e_remove_mac_trap(priv);
+		break;
 	default:
 		netdev_warn(priv->netdev, "%s: Unknown trap id %d\n", __func__, trap_id);
 		return -EINVAL;
-- 
2.29.2