[PATCH 02/30] net/mlx5: add flow_hw_get_reg_id_from_ctx()

[Gregory Etelson <getelson@nvidia.com>]

The new function call `flow_hw_get_reg_id_from_ctx()` maps input
DR5 context and register type to REG_C register.

Signed-off-by: Gregory Etelson <getelson@nvidia.com>
Acked-by: Ori Kam <orika@nvidia.com>
---
 drivers/net/mlx5/mlx5_flow.h | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/drivers/net/mlx5/mlx5_flow.h b/drivers/net/mlx5/mlx5_flow.h
index 3ea2548d2b..92dfd9a3a4 100644
--- a/drivers/net/mlx5/mlx5_flow.h
+++ b/drivers/net/mlx5/mlx5_flow.h
@@ -1711,6 +1711,28 @@ flow_hw_get_reg_id(enum rte_flow_item_type type, uint32_t id)
 	}
 }
 
+static __rte_always_inline int
+flow_hw_get_reg_id_from_ctx(void *dr_ctx,
+			    enum rte_flow_item_type type, uint32_t id)
+{
+#ifdef HAVE_IBV_FLOW_DV_SUPPORT
+	uint16_t port;
+
+	MLX5_ETH_FOREACH_DEV(port, NULL) {
+		struct mlx5_priv *priv;
+
+		priv = rte_eth_devices[port].data->dev_private;
+		if (priv->dr_ctx == dr_ctx)
+			return flow_hw_get_reg_id(type, id);
+	}
+#else
+	RTE_SET_USED(dr_ctx);
+	RTE_SET_USED(type);
+	RTE_SET_USED(id);
+#endif
+	return REG_NON;
+}
+
 void flow_hw_set_port_info(struct rte_eth_dev *dev);
 void flow_hw_clear_port_info(struct rte_eth_dev *dev);
 
-- 
2.39.2