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https://github.com/ethereum/go-ethereum.git
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2ed7456a4b
* feat: update L2 base fee formula * update 1559 unit test * use current block's base fee in txpool * fix unit test * Revert "use current block's base fee in txpool" This reverts commit 8a7d7ff87d6a9fb5124d72767c9ca24302673752.
75 lines
2.7 KiB
Go
75 lines
2.7 KiB
Go
// Copyright 2021 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package misc
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import (
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"fmt"
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"math/big"
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"github.com/scroll-tech/go-ethereum/core/types"
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"github.com/scroll-tech/go-ethereum/params"
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)
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// Protocol-enforced maximum L2 base fee.
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// We would only go above this if L1 base fee hits 2931 Gwei.
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const MaximumL2BaseFee = 10000000000
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// VerifyEip1559Header verifies some header attributes which were changed in EIP-1559,
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// - gas limit check
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// - basefee check
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func VerifyEip1559Header(config *params.ChainConfig, parent, header *types.Header) error {
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// Verify that the gas limit remains within allowed bounds
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if err := VerifyGaslimit(parent.GasLimit, header.GasLimit); err != nil {
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return err
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}
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// Verify the header is not malformed
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if header.BaseFee == nil {
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return fmt.Errorf("header is missing baseFee")
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}
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// note: we do not verify L2 base fee, the sequencer has the
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// right to set any base fee below the maximum. L2 base fee
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// is not subject to L2 consensus or zk verification.
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if header.BaseFee.Cmp(big.NewInt(MaximumL2BaseFee)) > 0 {
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return fmt.Errorf("invalid baseFee: have %s, maximum %d", header.BaseFee, MaximumL2BaseFee)
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}
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return nil
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}
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// CalcBaseFee calculates the basefee of the header.
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func CalcBaseFee(config *params.ChainConfig, parent *types.Header, parentL1BaseFee *big.Int) *big.Int {
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if config.Clique != nil && config.Clique.ShadowForkHeight != 0 && parent.Number.Uint64() >= config.Clique.ShadowForkHeight {
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return big.NewInt(10000000) // 0.01 Gwei
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}
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l2SequencerFee := big.NewInt(1000000) // 0.001 Gwei
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provingFee := big.NewInt(38200000) // 0.0382 Gwei
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// L1_base_fee * 0.00017
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verificationFee := parentL1BaseFee
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verificationFee = new(big.Int).Mul(verificationFee, big.NewInt(17))
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verificationFee = new(big.Int).Div(verificationFee, big.NewInt(100000))
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baseFee := big.NewInt(0)
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baseFee.Add(baseFee, l2SequencerFee)
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baseFee.Add(baseFee, provingFee)
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baseFee.Add(baseFee, verificationFee)
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if baseFee.Cmp(big.NewInt(MaximumL2BaseFee)) > 0 {
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baseFee = big.NewInt(MaximumL2BaseFee)
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}
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return baseFee
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}
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