netdev - [net-next 13/14] net/mlx5: DR, Add support for flow table id destination action

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Date:   Fri, 13 Mar 2020 18:16:21 -0700
From:   Saeed Mahameed <saeedm@...lanox.com>
To:     "David S. Miller" <davem@...emloft.net>
Cc:     kuba@...nel.org, netdev@...r.kernel.org,
        Alex Vesker <valex@...lanox.com>,
        Erez Shitrit <erezsh@...lanox.com>,
        Saeed Mahameed <saeedm@...lanox.com>
Subject: [net-next 13/14] net/mlx5: DR, Add support for flow table id destination action

From: Alex Vesker <valex@...lanox.com>

This action allows to go to a flow table based on the table id.
Goto flow table id is required for supporting user space SW.

Signed-off-by: Alex Vesker <valex@...lanox.com>
Reviewed-by: Erez Shitrit <erezsh@...lanox.com>
Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
---
 .../mellanox/mlx5/core/steering/dr_action.c    | 18 ++++++++++++++++++
 .../mellanox/mlx5/core/steering/fs_dr.c        | 12 ++++++++++++
 .../mellanox/mlx5/core/steering/mlx5dr.h       |  3 +++
 3 files changed, 33 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_action.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_action.c
index f899da9f8488..4b323a7ae794 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_action.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_action.c
@@ -964,6 +964,24 @@ struct mlx5dr_action *mlx5dr_action_create_drop(void)
 	return dr_action_create_generic(DR_ACTION_TYP_DROP);
 }
 
+struct mlx5dr_action *
+mlx5dr_action_create_dest_table_num(struct mlx5dr_domain *dmn, u32 table_num)
+{
+	struct mlx5dr_action *action;
+
+	action = dr_action_create_generic(DR_ACTION_TYP_FT);
+	if (!action)
+		return NULL;
+
+	action->dest_tbl.is_fw_tbl = true;
+	action->dest_tbl.fw_tbl.dmn = dmn;
+	action->dest_tbl.fw_tbl.id = table_num;
+	action->dest_tbl.fw_tbl.type = FS_FT_FDB;
+	refcount_inc(&dmn->refcount);
+
+	return action;
+}
+
 struct mlx5dr_action *
 mlx5dr_action_create_dest_table(struct mlx5dr_table *tbl)
 {
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/fs_dr.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/fs_dr.c
index d12d3a2d46ab..3b3f5b9d4f95 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/fs_dr.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/fs_dr.c
@@ -384,6 +384,7 @@ static int mlx5_cmd_dr_create_fte(struct mlx5_flow_root_namespace *ns,
 	if (fte->action.action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
 		list_for_each_entry(dst, &fte->node.children, node.list) {
 			enum mlx5_flow_destination_type type = dst->dest_attr.type;
+			u32 ft_id;
 
 			if (num_actions == MLX5_FLOW_CONTEXT_ACTION_MAX ||
 			    num_term_actions >= MLX5_FLOW_CONTEXT_ACTION_MAX) {
@@ -420,6 +421,17 @@ static int mlx5_cmd_dr_create_fte(struct mlx5_flow_root_namespace *ns,
 
 				num_term_actions++;
 				break;
+			case MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE_NUM:
+				ft_id = dst->dest_attr.ft_num;
+				tmp_action = mlx5dr_action_create_dest_table_num(domain,
+										 ft_id);
+				if (!tmp_action) {
+					err = -ENOMEM;
+					goto free_actions;
+				}
+				fs_dr_actions[fs_dr_num_actions++] = tmp_action;
+				term_actions[num_term_actions++].dest = tmp_action;
+				break;
 			default:
 				err = -EOPNOTSUPP;
 				goto free_actions;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/mlx5dr.h b/drivers/net/ethernet/mellanox/mlx5/core/steering/mlx5dr.h
index e09e4ea1b045..1ee10e3e0d52 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/mlx5dr.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/mlx5dr.h
@@ -76,6 +76,9 @@ int mlx5dr_rule_destroy(struct mlx5dr_rule *rule);
 int mlx5dr_table_set_miss_action(struct mlx5dr_table *tbl,
 				 struct mlx5dr_action *action);
 
+struct mlx5dr_action *
+mlx5dr_action_create_dest_table_num(struct mlx5dr_domain *dmn, u32 table_num);
+
 struct mlx5dr_action *
 mlx5dr_action_create_dest_table(struct mlx5dr_table *table);
 
-- 
2.24.1