diff --git a/drivers/net/ethernet/mellanox/mlx4/srq.c b/drivers/net/ethernet/mellanox/mlx4/srq.c
index e329fe1f11b736d8e717880c7e6e7e092db2a14c..79fd269e2c54b3e0a043ab072a4e2b0f888e0088 100644
--- a/drivers/net/ethernet/mellanox/mlx4/srq.c
+++ b/drivers/net/ethernet/mellanox/mlx4/srq.c
@@ -298,3 +298,18 @@ void mlx4_cleanup_srq_table(struct mlx4_dev *dev)
 		return;
 	mlx4_bitmap_cleanup(&mlx4_priv(dev)->srq_table.bitmap);
 }
+
+struct mlx4_srq *mlx4_srq_lookup(struct mlx4_dev *dev, u32 srqn)
+{
+	struct mlx4_srq_table *srq_table = &mlx4_priv(dev)->srq_table;
+	struct mlx4_srq *srq;
+	unsigned long flags;
+
+	spin_lock_irqsave(&srq_table->lock, flags);
+	srq = radix_tree_lookup(&srq_table->tree,
+				srqn & (dev->caps.num_srqs - 1));
+	spin_unlock_irqrestore(&srq_table->lock, flags);
+
+	return srq;
+}
+EXPORT_SYMBOL_GPL(mlx4_srq_lookup);
diff --git a/include/linux/mlx4/srq.h b/include/linux/mlx4/srq.h
index 799a0697a3835a751c4a63e02f82cf871d27c342..192e0f7784f2868e647eeb7b49abc15e7bab4639 100644
--- a/include/linux/mlx4/srq.h
+++ b/include/linux/mlx4/srq.h
@@ -39,4 +39,6 @@ struct mlx4_wqe_srq_next_seg {
 	u32			reserved2[3];
 };
 
+struct mlx4_srq *mlx4_srq_lookup(struct mlx4_dev *dev, u32 srqn);
+
 #endif /* MLX4_SRQ_H */