1 files changed, 51 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/mirred_nic.c b/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/mirred_nic.c
new file mode 100644
index 000000000000..90b4c1b34776
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/mirred_nic.c
@@ -0,0 +1,51 @@
+// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
+// Copyright (c) 2021, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+
+#include "act.h"
+#include "en/tc_priv.h"
+
+static bool
+tc_act_can_offload_mirred_nic(struct mlx5e_tc_act_parse_state *parse_state,
+			      const struct flow_action_entry *act,
+			      int act_index,
+			      struct mlx5_flow_attr *attr)
+{
+	struct netlink_ext_ack *extack = parse_state->extack;
+	struct mlx5e_tc_flow *flow = parse_state->flow;
+	struct net_device *out_dev = act->dev;
+	struct mlx5e_priv *priv = flow->priv;
+
+	if (act->id != FLOW_ACTION_REDIRECT)
+		return false;
+
+	if (priv->netdev->netdev_ops != out_dev->netdev_ops ||
+	    !mlx5e_same_hw_devs(priv, netdev_priv(out_dev))) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "devices are not on same switch HW, can't offload forwarding");
+		netdev_warn(priv->netdev,
+			    "devices %s %s not on same switch HW, can't offload forwarding\n",
+			    netdev_name(priv->netdev),
+			    out_dev->name);
+		return false;
+	}
+
+	return true;
+}
+
+static int
+tc_act_parse_mirred_nic(struct mlx5e_tc_act_parse_state *parse_state,
+			const struct flow_action_entry *act,
+			struct mlx5e_priv *priv,
+			struct mlx5_flow_attr *attr)
+{
+	attr->parse_attr->mirred_ifindex[0] = act->dev->ifindex;
+	flow_flag_set(parse_state->flow, HAIRPIN);
+	attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
+
+	return 0;
+}
+
+struct mlx5e_tc_act mlx5e_tc_act_mirred_nic = {
+	.can_offload = tc_act_can_offload_mirred_nic,
+	.parse_action = tc_act_parse_mirred_nic,
+};