[PATCH 02/10] net/mlx5: add checking if unicast flow rule exists

[Dariusz Sosnowski <dsosnowski@nvidia.com>]

Add 2 internal functions for checking if:

- unicast DMAC control flow rule or
- unicast DMAC with VLAN control flow rule,

was created.

Signed-off-by: Dariusz Sosnowski <dsosnowski@nvidia.com>
---
 drivers/net/mlx5/mlx5.h      | 11 +++++++++++
 drivers/net/mlx5/mlx5_flow.c | 37 ++++++++++++++++++++++++++++++++++++
 2 files changed, 48 insertions(+)

diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h
index 80829be5b4..3551b793d6 100644
--- a/drivers/net/mlx5/mlx5.h
+++ b/drivers/net/mlx5/mlx5.h
@@ -1831,6 +1831,17 @@ struct mlx5_hw_ctrl_flow_info {
 	};
 };
 
+/** Returns true if a control flow rule with unicast DMAC match on given address was created. */
+bool mlx5_ctrl_flow_uc_dmac_exists(struct rte_eth_dev *dev, const struct rte_ether_addr *addr);
+
+/**
+ * Returns true if a control flow rule with unicast DMAC and VLAN match
+ * on given values was created.
+ */
+bool mlx5_ctrl_flow_uc_dmac_vlan_exists(struct rte_eth_dev *dev,
+					const struct rte_ether_addr *addr,
+					const uint16_t vid);
+
 /** Entry for tracking control flow rules in HWS. */
 struct mlx5_hw_ctrl_flow {
 	LIST_ENTRY(mlx5_hw_ctrl_flow) next;
diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c
index effc61cdc9..69f8bd8d97 100644
--- a/drivers/net/mlx5/mlx5_flow.c
+++ b/drivers/net/mlx5/mlx5_flow.c
@@ -12180,3 +12180,40 @@ rte_pmd_mlx5_destroy_geneve_tlv_parser(void *handle)
 	return -rte_errno;
 #endif
 }
+
+bool
+mlx5_ctrl_flow_uc_dmac_exists(struct rte_eth_dev *dev, const struct rte_ether_addr *addr)
+{
+	struct mlx5_priv *priv = dev->data->dev_private;
+	struct mlx5_hw_ctrl_flow *entry;
+	bool exists = false;
+
+	LIST_FOREACH(entry, &priv->hw_ctrl_flows, next) {
+		if (entry->info.type == MLX5_HW_CTRL_FLOW_TYPE_DEFAULT_RX_RSS_UNICAST_DMAC &&
+		    rte_is_same_ether_addr(addr, &entry->info.uc.dmac)) {
+			exists = true;
+			break;
+		}
+	}
+	return exists;
+}
+
+bool
+mlx5_ctrl_flow_uc_dmac_vlan_exists(struct rte_eth_dev *dev,
+				   const struct rte_ether_addr *addr,
+				   const uint16_t vid)
+{
+	struct mlx5_priv *priv = dev->data->dev_private;
+	struct mlx5_hw_ctrl_flow *entry;
+	bool exists = false;
+
+	LIST_FOREACH(entry, &priv->hw_ctrl_flows, next) {
+		if (entry->info.type == MLX5_HW_CTRL_FLOW_TYPE_DEFAULT_RX_RSS_UNICAST_DMAC_VLAN &&
+		    rte_is_same_ether_addr(addr, &entry->info.uc.dmac) &&
+		    vid == entry->info.uc.vlan) {
+			exists = true;
+			break;
+		}
+	}
+	return exists;
+}
-- 
2.39.5