Westend: Support Meta Transactions

cumulus/parachains/runtimes/assets/asset-hub-westend/Cargo.toml

@@ -47,6 +47,7 @@ pallet-delegated-staking = { workspace = true }
 pallet-election-provider-multi-block = { workspace = true }
 pallet-fast-unstake = { workspace = true }
 pallet-indices = { workspace = true }
+pallet-meta-tx = { workspace = true }
 pallet-migrations = { workspace = true }
 pallet-multi-asset-bounties = { workspace = true }
 pallet-multisig = { workspace = true }
@@ -73,6 +74,7 @@ pallet-transaction-payment-rpc-runtime-api = { workspace = true }
 pallet-treasury = { workspace = true }
 pallet-uniques = { workspace = true }
 pallet-utility = { workspace = true }
+pallet-verify-signature = { workspace = true }
 pallet-vesting = { workspace = true }
 pallet-whitelist = { workspace = true }
 sp-api = { workspace = true }
@@ -191,6 +193,7 @@ runtime-benchmarks = [
 	"pallet-fast-unstake/runtime-benchmarks",
 	"pallet-indices/runtime-benchmarks",
 	"pallet-message-queue/runtime-benchmarks",
+	"pallet-meta-tx/runtime-benchmarks",
 	"pallet-migrations/runtime-benchmarks",
 	"pallet-multi-asset-bounties/runtime-benchmarks",
 	"pallet-multisig/runtime-benchmarks",
@@ -213,6 +216,7 @@ runtime-benchmarks = [
 	"pallet-treasury/runtime-benchmarks",
 	"pallet-uniques/runtime-benchmarks",
 	"pallet-utility/runtime-benchmarks",
+	"pallet-verify-signature/runtime-benchmarks",
 	"pallet-vesting/runtime-benchmarks",
 	"pallet-whitelist/runtime-benchmarks",
 	"pallet-xcm-benchmarks/runtime-benchmarks",
@@ -268,6 +272,7 @@ try-runtime = [
 	"pallet-fast-unstake/try-runtime",
 	"pallet-indices/try-runtime",
 	"pallet-message-queue/try-runtime",
+	"pallet-meta-tx/try-runtime",
 	"pallet-migrations/try-runtime",
 	"pallet-multi-asset-bounties/try-runtime",
 	"pallet-multisig/try-runtime",
@@ -290,6 +295,7 @@ try-runtime = [
 	"pallet-treasury/try-runtime",
 	"pallet-uniques/try-runtime",
 	"pallet-utility/try-runtime",
+	"pallet-verify-signature/try-runtime",
 	"pallet-vesting/try-runtime",
 	"pallet-whitelist/try-runtime",
 	"pallet-xcm-bridge-hub-router/try-runtime",
@@ -351,6 +357,7 @@ std = [
 	"pallet-fast-unstake/std",
 	"pallet-indices/std",
 	"pallet-message-queue/std",
+	"pallet-meta-tx/std",
 	"pallet-migrations/std",
 	"pallet-multi-asset-bounties/std",
 	"pallet-multisig/std",
@@ -377,6 +384,7 @@ std = [
 	"pallet-treasury/std",
 	"pallet-uniques/std",
 	"pallet-utility/std",
+	"pallet-verify-signature/std",
 	"pallet-vesting/std",
 	"pallet-whitelist/std",
 	"pallet-xcm-benchmarks?/std",

cumulus/parachains/runtimes/assets/asset-hub-westend/src/lib.rs

@@ -88,7 +88,7 @@ use sp_runtime::{
 	generic, impl_opaque_keys,
 	traits::{AccountIdConversion, BlakeTwo256, Block as BlockT, ConvertInto, Saturating, Verify},
 	transaction_validity::{TransactionSource, TransactionValidity},
-	ApplyExtrinsicResult, Debug, FixedU128, Perbill, Permill,
+	ApplyExtrinsicResult, Debug, FixedU128, MultiSignature, MultiSigner, Perbill, Permill,
 };
 #[cfg(feature = "std")]
 use sp_version::NativeVersion;
@@ -1380,6 +1380,35 @@ impl pallet_sudo::Config for Runtime {
 	type WeightInfo = weights::pallet_sudo::WeightInfo<Runtime>;
 }
 
+pub type MetaTxExtension = (
+	pallet_verify_signature::VerifySignature<Runtime>,
+	pallet_meta_tx::MetaTxMarker<Runtime>,
+	frame_system::CheckNonZeroSender<Runtime>,
+	frame_system::CheckSpecVersion<Runtime>,
+	frame_system::CheckTxVersion<Runtime>,
+	frame_system::CheckGenesis<Runtime>,
+	frame_system::CheckEra<Runtime>,
+	frame_system::CheckNonce<Runtime>,
+	frame_metadata_hash_extension::CheckMetadataHash<Runtime>,
+);
+
+impl pallet_meta_tx::Config for Runtime {
+	type WeightInfo = weights::pallet_meta_tx::WeightInfo<Runtime>;
+	type RuntimeEvent = RuntimeEvent;
+	#[cfg(not(feature = "runtime-benchmarks"))]
+	type Extension = MetaTxExtension;
+	#[cfg(feature = "runtime-benchmarks")]
+	type Extension = weights::pallet_meta_tx::WeightlessExtension<Runtime>;
+}
+
+impl pallet_verify_signature::Config for Runtime {
+	type Signature = MultiSignature;
+	type AccountIdentifier = MultiSigner;
+	type WeightInfo = weights::pallet_verify_signature::WeightInfo<Runtime>;
+	#[cfg(feature = "runtime-benchmarks")]
+	type BenchmarkHelper = ();
+}
+
 // Create the runtime by composing the FRAME pallets that were previously configured.
 construct_runtime!(
 	pub enum Runtime
@@ -1425,6 +1454,8 @@ construct_runtime!(
 		Multisig: pallet_multisig = 41,
 		Proxy: pallet_proxy = 42,
 		Indices: pallet_indices = 43,
+		MetaTx: pallet_meta_tx = 44,
+		VerifySignature: pallet_verify_signature = 45,
 
 		// The main stage.
 		Assets: pallet_assets::<Instance1> = 50,
@@ -1480,6 +1511,7 @@ construct_runtime!(
 		AssetConversionMigration: pallet_asset_conversion_ops = 200,
 
 		AhOps: pallet_ah_ops = 254,
+
 	}
 );
 
@@ -1806,6 +1838,8 @@ mod benches {
 		[pallet_staking_async_rc_client, StakingRcClientBench::<Runtime>]
 		[pallet_uniques, Uniques]
 		[pallet_utility, Utility]
+		[pallet_meta_tx, MetaTx]
+		[pallet_verify_signature, VerifySignature]
 		[pallet_timestamp, Timestamp]
 		[pallet_transaction_payment, TransactionPayment]
 		[pallet_collator_selection, CollatorSelection]

cumulus/parachains/runtimes/assets/asset-hub-westend/src/weights/mod.rs

@@ -40,6 +40,7 @@ pub mod pallet_election_provider_multi_block_unsigned;
 pub mod pallet_election_provider_multi_block_verifier;
 pub mod pallet_indices;
 pub mod pallet_message_queue;
+pub mod pallet_meta_tx;
 pub mod pallet_migrations;
 pub mod pallet_multisig;
 pub mod pallet_nft_fractionalization;
@@ -58,6 +59,7 @@ pub mod pallet_transaction_payment;
 pub mod pallet_treasury;
 pub mod pallet_uniques;
 pub mod pallet_utility;
+pub mod pallet_verify_signature;
 pub mod pallet_vesting;
 pub mod pallet_whitelist;
 pub mod pallet_xcm;

cumulus/parachains/runtimes/assets/asset-hub-westend/src/weights/pallet_meta_tx.rs

@@ -0,0 +1,64 @@
+// Copyright (C) Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: Apache-2.0
+
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//! Autogenerated weights for `pallet_meta_tx`
+//!
+//! THIS FILE WAS AUTO-GENERATED USING THE SUBSTRATE BENCHMARK CLI VERSION 32.0.0
+//! DATE: 2026-03-23, STEPS: `50`, REPEAT: `20`, LOW RANGE: `[]`, HIGH RANGE: `[]`
+//! WORST CASE MAP SIZE: `1000000`
+//! HOSTNAME: `507b76bae137`, CPU: `Intel(R) Xeon(R) CPU @ 2.60GHz`
+//! WASM-EXECUTION: `Compiled`, CHAIN: `None`, DB CACHE: 1024
+
+// Executed Command:
+// frame-omni-bencher
+// v1
+// benchmark
+// pallet
+// --extrinsic=*
+// --runtime=target/production/wbuild/asset-hub-westend-runtime/asset_hub_westend_runtime.wasm
+// --pallet=pallet_meta_tx
+// --header=/__w/polkadot-sdk/polkadot-sdk/cumulus/file_header.txt
+// --output=./cumulus/parachains/runtimes/assets/asset-hub-westend/src/weights
+// --wasm-execution=compiled
+// --steps=50
+// --repeat=20
+// --heap-pages=4096
+// --no-storage-info
+// --no-min-squares
+// --no-median-slopes
+
+#![cfg_attr(rustfmt, rustfmt_skip)]
+#![allow(unused_parens)]
+#![allow(unused_imports)]
+#![allow(missing_docs)]
+
+use frame_support::{traits::Get, weights::Weight};
+use core::marker::PhantomData;
+
+/// Weight functions for `pallet_meta_tx`.
+pub struct WeightInfo<T>(PhantomData<T>);
+impl<T: frame_system::Config> pallet_meta_tx::WeightInfo for WeightInfo<T> {
+	/// The range of component `n` is `[8, 100]`.
+	fn bare_dispatch(n: u32, ) -> Weight {
+		// Proof Size summary in bytes:
+		//  Measured:  `0`
+		//  Estimated: `0`
+		// Minimum execution time: 7_909_000 picoseconds.
+		Weight::from_parts(8_635_922, 0)
+			.saturating_add(Weight::from_parts(0, 0))
+			// Standard Error: 32
+			.saturating_add(Weight::from_parts(4_392, 0).saturating_mul(n.into()))
+	}
+}

cumulus/parachains/runtimes/assets/asset-hub-westend/src/weights/pallet_verify_signature.rs

@@ -0,0 +1,61 @@
+// Copyright (C) Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: Apache-2.0
+
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//! Autogenerated weights for `pallet_verify_signature`
+//!
+//! THIS FILE WAS AUTO-GENERATED USING THE SUBSTRATE BENCHMARK CLI VERSION 32.0.0
+//! DATE: 2026-03-23, STEPS: `50`, REPEAT: `20`, LOW RANGE: `[]`, HIGH RANGE: `[]`
+//! WORST CASE MAP SIZE: `1000000`
+//! HOSTNAME: `9c015ccade1b`, CPU: `Intel(R) Xeon(R) CPU @ 2.60GHz`
+//! WASM-EXECUTION: `Compiled`, CHAIN: `None`, DB CACHE: 1024
+
+// Executed Command:
+// frame-omni-bencher
+// v1
+// benchmark
+// pallet
+// --extrinsic=*
+// --runtime=target/production/wbuild/asset-hub-westend-runtime/asset_hub_westend_runtime.wasm
+// --pallet=pallet_verify_signature
+// --header=/__w/polkadot-sdk/polkadot-sdk/cumulus/file_header.txt
+// --output=./cumulus/parachains/runtimes/assets/asset-hub-westend/src/weights
+// --wasm-execution=compiled
+// --steps=50
+// --repeat=20
+// --heap-pages=4096
+// --no-storage-info
+// --no-min-squares
+// --no-median-slopes
+
+#![cfg_attr(rustfmt, rustfmt_skip)]
+#![allow(unused_parens)]
+#![allow(unused_imports)]
+#![allow(missing_docs)]
+
+use frame_support::{traits::Get, weights::Weight};
+use core::marker::PhantomData;
+
+/// Weight functions for `pallet_verify_signature`.
+pub struct WeightInfo<T>(PhantomData<T>);
+impl<T: frame_system::Config> pallet_verify_signature::WeightInfo for WeightInfo<T> {
+	fn verify_signature() -> Weight {
+		// Proof Size summary in bytes:
+		//  Measured:  `0`
+		//  Estimated: `0`
+		// Minimum execution time: 42_154_000 picoseconds.
+		Weight::from_parts(43_685_000, 0)
+			.saturating_add(Weight::from_parts(0, 0))
+	}
+}