primitives: make async backing params accessible for parachains

primitives/src/v5/mod.rs

@@ -1165,6 +1165,8 @@ pub struct AbridgedHostConfiguration {
 	pub validation_upgrade_cooldown: BlockNumber,
 	/// The delay, in blocks, before a validation upgrade is applied.
 	pub validation_upgrade_delay: BlockNumber,
+	/// Asynchronous backing parameters.
+	pub async_backing_params: super::vstaging::AsyncBackingParams,
 }
 
 /// Abridged version of `HrmpChannel` (from the `Hrmp` parachains host runtime module) meant to be

runtime/parachains/src/configuration.rs

@@ -124,13 +124,13 @@ pub struct HostConfiguration<BlockNumber> {
 	///
 	/// [#4601]: https://github.com/paritytech/polkadot/issues/4601
 	pub validation_upgrade_delay: BlockNumber,
+	/// Asynchronous backing parameters.
+	pub async_backing_params: AsyncBackingParams,
 
 	/**
 	 * The parameters that are not essential, but still may be of interest for parachains.
 	 */
 
-	/// Asynchronous backing parameters.
-	pub async_backing_params: AsyncBackingParams,
 	/// The maximum POV block size, in bytes.
 	pub max_pov_size: u32,
 	/// The maximum size of a message that can be put in a downward message queue.

runtime/parachains/src/configuration/tests.rs

@@ -487,7 +487,9 @@ fn verify_externally_accessible() {
 	use primitives::{well_known_keys, AbridgedHostConfiguration};
 
 	new_test_ext(Default::default()).execute_with(|| {
-		let ground_truth = HostConfiguration::default();
+		let mut ground_truth = HostConfiguration::default();
+		ground_truth.async_backing_params =
+			AsyncBackingParams { allowed_ancestry_len: 111, max_candidate_depth: 222 };
 
 		// Make sure that the configuration is stored in the storage.
 		ActiveConfig::<Test>::put(ground_truth.clone());
@@ -511,6 +513,7 @@ fn verify_externally_accessible() {
 				hrmp_max_message_num_per_candidate: ground_truth.hrmp_max_message_num_per_candidate,
 				validation_upgrade_cooldown: ground_truth.validation_upgrade_cooldown,
 				validation_upgrade_delay: ground_truth.validation_upgrade_delay,
+				async_backing_params: ground_truth.async_backing_params,
 			},
 		);
 	});