net/mlx5e: Add tunnel encap/decap to tc action infra

Add parsing support by implementing struct mlx5e_tc_act
for this action.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Oz Shlomo <ozsh@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

3 files changed, 75 insertions, 0 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/act.c b/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/act.c
index 6be1d1c7476c..4b406153db72 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/act.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/act.c
@@ -11,6 +11,15 @@ static struct mlx5e_tc_act *tc_acts_fdb[NUM_FLOW_ACTIONS] = {
 	&mlx5e_tc_act_drop,
 	&mlx5e_tc_act_trap,
 	&mlx5e_tc_act_goto,
+	NULL, /* FLOW_ACTION_REDIRECT, */
+	NULL, /* FLOW_ACTION_MIRRED, */
+	NULL, /* FLOW_ACTION_REDIRECT_INGRESS, */
+	NULL, /* FLOW_ACTION_MIRRED_INGRESS, */
+	NULL, /* FLOW_ACTION_VLAN_PUSH, */
+	NULL, /* FLOW_ACTION_VLAN_POP, */
+	NULL, /* FLOW_ACTION_VLAN_MANGLE, */
+	&mlx5e_tc_act_tun_encap,
+	&mlx5e_tc_act_tun_decap,
 };
 
 /* Must be aligned with enum flow_action_id. */
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/act.h b/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/act.h
index b72fc0c89b6f..b0d6333b24a3 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/act.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/act.h
@@ -14,6 +14,9 @@ struct mlx5e_tc_act_parse_state {
 	unsigned int num_actions;
 	struct mlx5e_tc_flow *flow;
 	struct netlink_ext_ack *extack;
+	bool encap;
+	bool decap;
+	const struct ip_tunnel_info *tun_info;
 };
 
 struct mlx5e_tc_act {
@@ -32,6 +35,8 @@ extern struct mlx5e_tc_act mlx5e_tc_act_trap;
 extern struct mlx5e_tc_act mlx5e_tc_act_accept;
 extern struct mlx5e_tc_act mlx5e_tc_act_mark;
 extern struct mlx5e_tc_act mlx5e_tc_act_goto;
+extern struct mlx5e_tc_act mlx5e_tc_act_tun_encap;
+extern struct mlx5e_tc_act mlx5e_tc_act_tun_decap;
 
 struct mlx5e_tc_act *
 mlx5e_tc_act_get(enum flow_action_id act_id,
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/tun.c b/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/tun.c
new file mode 100644
index 000000000000..6f4a2cf46afd
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/tun.c
@@ -0,0 +1,61 @@
+// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
+// Copyright (c) 2021, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+
+#include "act.h"
+#include "en/tc_tun_encap.h"
+#include "en/tc_priv.h"
+
+static bool
+tc_act_can_offload_tun_encap(struct mlx5e_tc_act_parse_state *parse_state,
+			     const struct flow_action_entry *act,
+			     int act_index)
+{
+	if (!act->tunnel) {
+		NL_SET_ERR_MSG_MOD(parse_state->extack,
+				   "Zero tunnel attributes is not supported");
+		return false;
+	}
+
+	return true;
+}
+
+static int
+tc_act_parse_tun_encap(struct mlx5e_tc_act_parse_state *parse_state,
+		       const struct flow_action_entry *act,
+		       struct mlx5e_priv *priv,
+		       struct mlx5_flow_attr *attr)
+{
+	parse_state->tun_info = act->tunnel;
+	parse_state->encap = true;
+
+	return 0;
+}
+
+static bool
+tc_act_can_offload_tun_decap(struct mlx5e_tc_act_parse_state *parse_state,
+			     const struct flow_action_entry *act,
+			     int act_index)
+{
+	return true;
+}
+
+static int
+tc_act_parse_tun_decap(struct mlx5e_tc_act_parse_state *parse_state,
+		       const struct flow_action_entry *act,
+		       struct mlx5e_priv *priv,
+		       struct mlx5_flow_attr *attr)
+{
+	parse_state->decap = true;
+
+	return 0;
+}
+
+struct mlx5e_tc_act mlx5e_tc_act_tun_encap = {
+	.can_offload = tc_act_can_offload_tun_encap,
+	.parse_action = tc_act_parse_tun_encap,
+};
+
+struct mlx5e_tc_act mlx5e_tc_act_tun_decap = {
+	.can_offload = tc_act_can_offload_tun_decap,
+	.parse_action = tc_act_parse_tun_decap,
+};