1 files changed, 78 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/redirect_ingress.c b/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/redirect_ingress.c
new file mode 100644
index 000000000000..ad09a8a5f36e
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/redirect_ingress.c
@@ -0,0 +1,78 @@
+// 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_redirect_ingress(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_parse_attr *parse_attr;
+	struct net_device *out_dev = act->dev;
+	struct mlx5_esw_flow_attr *esw_attr;
+
+	parse_attr = attr->parse_attr;
+	esw_attr = attr->esw_attr;
+
+	if (!out_dev)
+		return false;
+
+	if (!netif_is_ovs_master(out_dev)) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "redirect to ingress is supported only for OVS internal ports");
+		return false;
+	}
+
+	if (netif_is_ovs_master(parse_attr->filter_dev)) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "redirect to ingress is not supported from internal port");
+		return false;
+	}
+
+	if (!parse_state->ptype_host) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "redirect to int port ingress requires ptype=host action");
+		return false;
+	}
+
+	if (esw_attr->out_count) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "redirect to int port ingress is supported only as single destination");
+		return false;
+	}
+
+	return true;
+}
+
+static int
+tc_act_parse_redirect_ingress(struct mlx5e_tc_act_parse_state *parse_state,
+			      const struct flow_action_entry *act,
+			      struct mlx5e_priv *priv,
+			      struct mlx5_flow_attr *attr)
+{
+	struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
+	struct net_device *out_dev = act->dev;
+	int err;
+
+	attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
+
+	err = mlx5e_set_fwd_to_int_port_actions(priv, attr, out_dev->ifindex,
+						MLX5E_TC_INT_PORT_INGRESS,
+						&attr->action, esw_attr->out_count);
+	if (err)
+		return err;
+
+	esw_attr->out_count++;
+
+	return 0;
+}
+
+struct mlx5e_tc_act mlx5e_tc_act_redirect_ingress = {
+	.can_offload = tc_act_can_offload_redirect_ingress,
+	.parse_action = tc_act_parse_redirect_ingress,
+};
+