As per benchmark results below, these changes speed up encoding/decoding of
consensus objects a bit.

    name                             old time/op    new time/op    delta
    EncodeRLP/legacy-header-8           384ns ± 1%     331ns ± 3%  -13.83%  (p=0.000 n=7+8)
    EncodeRLP/london-header-8           411ns ± 1%     359ns ± 2%  -12.53%  (p=0.000 n=8+8)
    EncodeRLP/receipt-for-storage-8     251ns ± 0%     239ns ± 0%   -4.97%  (p=0.000 n=8+8)
    EncodeRLP/receipt-full-8            319ns ± 0%     300ns ± 0%   -5.89%  (p=0.000 n=8+7)
    EncodeRLP/legacy-transaction-8      389ns ± 1%     387ns ± 1%     ~     (p=0.099 n=8+8)
    EncodeRLP/access-transaction-8      607ns ± 0%     581ns ± 0%   -4.26%  (p=0.000 n=8+8)
    EncodeRLP/1559-transaction-8        627ns ± 0%     606ns ± 1%   -3.44%  (p=0.000 n=8+8)
    DecodeRLP/legacy-header-8           831ns ± 1%     813ns ± 1%   -2.20%  (p=0.000 n=8+8)
    DecodeRLP/london-header-8           824ns ± 0%     804ns ± 1%   -2.44%  (p=0.000 n=8+7)

* rlp: pass length to byteArrayBytes

This makes it possible to inline byteArrayBytes. For arrays, the length is known
at encoder construction time, so the call to v.Len() can be avoided.

* rlp: avoid IsNil for pointer encoding

It's actually cheaper to use Elem first, because it performs less checks
on the value. If the pointer was nil, the result of Elem is 'invalid'.

* rlp: minor optimizations for slice/array encoding

For empty slices/arrays, we can avoid storing a list header entry in the
encoder buffer. Also avoid doing the tail check at encoding time because
it is already known at encoder construction time.

Generated by go1.17 fmt ./...

This PR adds functionality to the evm t8n to calculate ethash difficulty. If the caller does not provide a currentDifficulty, but instead provides the parentTimestamp (well, semi-optional, will default to 0 if not given), and parentDifficulty, we can calculate it for him.

The caller can also provide a parentUncleHash. In most, but not all cases, the parent uncle hash also affects the formula. If no such hash is provided (or, if the empty all-zero hash is provided), it's assumed that there were no uncles.

The new linter version is built with go 1.17 and thus includes the go vet
check for mismatched +build and go:build lines.

Fortunately, no new warnings are reported with this update.

This reverts commit c368f728.

* core: make txpool reject too sudden changes

* core: add some metrics to txpool

Co-authored-by: Felix Lange <fjl@twurst.com>

Co-authored-by: Felix Lange <fjl@twurst.com>
Co-authored-by: Sina Mahmoodi <1591639+s1na@users.noreply.github.com>

Before:

316M .git/modules/tests/

After:

171M .git/modules/tests/

This fixes a rare crash which could occur when two different errors happened
in the same bloombits.MatcherSession.

In p2p/dial.go, conn.flags was accessed without using sync/atomic.
This race is fixed by removing the access.

In p2p/enode/iter_test.go, a similar race is resolved by writing the field atomically.

Co-authored-by: Felix Lange <fjl@twurst.com>

* core/vm: more detailed benchmark for jumpdest analysis

* core/vm: make jd analysis benchmark alloc free

* core/vm: improve jumpdest analysis

* core/vm: improve worst-case

* core/vm: further improvements in analysis

* core/vm: improve jumpdest analysis >PUSH15

* core/vm: make jd analysis ref by value

* core/vm: fix misspell

* core/vm: improve set8 and set16 a bit

* core/vm: reduce amount of code

* core/vm: optimize byte copying

* eth/gasprice: cache feeHistory results

* eth/gasprice: changed feeHistory block count limitation

* eth/gasprice: do not use embedded struct in blockFees

* eth/gasprice: fee processing logic cleanup

* eth/gasprice: purge feeHistory cache at chain reorgs

Makes the RPC block return the POA sealer for clique blocks on the 'miner' field (was previously zeroes)

Adds --nousb as a deprecated flag when someone runs the geth show-deprecated-flags command.

Removes references to the short-lived Calaveras testnet

cmd, metrics: add support for influxdb-v2 (cherry-picking from italoacasas' changes), leave existing support for v1 to maintain backwards-compatibility. (#23194)

This PR adds flag to enable InfluxDB v2 (--metrics.influxdbv2), flags for v2-specific features (--metrics.influxdb.token, --metrics.influxdb.bucket), also carries over addition of support for specifying organization (--metrics.influxdb.organization), but still retains backwards compatibility with InfluxDB v1.

* tests: update, enable legacy tests, remove vm tests

* tests: minor fixes

* accounts/external: handle 0 chainid as not-set for the Clef API

* accounts/external: document SignTx

Co-authored-by: Felix Lange <fjl@twurst.com>

eth: drop eth/65, the last non-reqid protocol version

* core/rawdb: implement sequential reads in freezer_table

* core/rawdb, ethdb: add sequential reader to db interface

* core/rawdb: lint nitpicks

* core/rawdb: fix some nitpicks

* core/rawdb: fix flaw with deferred reads not being performed

* core/rawdb: better documentation