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Joe Tsai 31bf3874d6 util/deephash: use unsafe.Pointer instead of reflect.Value (#5459 ) Use of reflect.Value.SetXXX panics if the provided argument was obtained from an unexported struct field. Instead, pass an unsafe.Pointer around and convert to a reflect.Value when necessary (i.e., for maps and interfaces). Converting from unsafe.Pointer to reflect.Value guarantees that none of the read-only bits will be populated. When running in race mode, we attach type information to the pointer so that we can type check every pointer operation. This also type-checks that direct memory hashing is within the valid range of a struct value. We add test cases that previously caused deephash to panic, but now pass. Performance: name old time/op new time/op delta Hash 14.1µs ± 1% 14.1µs ± 1% ~ (p=0.590 n=10+9) HashPacketFilter 2.53µs ± 2% 2.44µs ± 1% -3.79% (p=0.000 n=9+10) TailcfgNode 1.45µs ± 1% 1.43µs ± 0% -1.36% (p=0.000 n=9+9) HashArray 318ns ± 2% 318ns ± 2% ~ (p=0.541 n=10+10) HashMapAcyclic 32.9µs ± 1% 31.6µs ± 1% -4.16% (p=0.000 n=10+9) There is a slight performance gain due to the use of unsafe.Pointer over reflect.Value methods. Also, passing an unsafe.Pointer (1 word) on the stack is cheaper than passing a reflect.Value (3 words). Performance gains are diminishing since SHA-256 hashing now dominates the runtime. Signed-off-by: Joe Tsai <joetsai@digital-static.net>		2 years ago
.bencher	bencher: add config to suppress failures on benchmark regressions.	3 years ago
.github	.github/actions: add signoff to go-licenses commits	2 years ago
atomicfile	atomicfile: update docs to clarify behavior of argument	2 years ago
chirp	all: use any instead of interface{}	3 years ago
client/tailscale	client,cmd/tailscale,ipn,tka,types: implement tka initialization flow	2 years ago
cmd	cmd/tailscale: use platform specific license link	2 years ago
control	control/controlclient,tailcfg: [capver 40] create KeySignature field in tailcfg.Node	2 years ago
derp	all: use syncs.AtomicValue	2 years ago
disco	all: migrate more code code to net/netip directly	2 years ago
docs	docs/k8s: add prefix to (#5167 )	2 years ago
envknob	ipn/ipnlocal: reject tailscale up --ssh if disabled on tailnet	3 years ago
health	cmd/tailscale: surface authentication errors in status.Health (#4748 )	3 years ago
hostinfo	tailcfg: add Hostinfo.GoVersion	2 years ago
internal/tooldeps	.github/workflows: add gofmt (goimports) check	2 years ago
ipn	tka: make storage a parameter rather than an Authority struct member	2 years ago
jsondb	jsondb: small package to load/save JSON DBs.	2 years ago
kube	all: use any instead of interface{}	3 years ago
licenses	licenses: update android licenses	2 years ago
log	wasm: drop pprof dependency	3 years ago
logpolicy	logtail,logpolicy: tweak minor cosmetic things	2 years ago
logtail	cmd/tsconnect: make logtail uploading work	2 years ago
metrics	all: use testingutil.MinAllocsPerRun	3 years ago
net	net/dns/publicdns: Add Mullvad DoH	2 years ago
packages/deb	all: use any instead of interface{}	3 years ago
paths	all: use syncs.AtomicValue	2 years ago
portlist	syncs, all: move to using Go's new atomic types instead of ours	2 years ago
prober	syncs, all: move to using Go's new atomic types instead of ours	2 years ago
safesocket	all: gofmt for Go 1.19	2 years ago
scripts	scripts/installer.sh: add `-y` for unattended install	2 years ago
smallzstd	smallzstd: new package that constructs zstd small encoders/decoders.	4 years ago
ssh/tailssh	syncs, all: move to using Go's new atomic types instead of ours	2 years ago
syncs	syncs: add generic AtomicValue	2 years ago
tailcfg	tailcfg: add Hostinfo.GoVersion	2 years ago
tempfork	all: gofmt for Go 1.19	2 years ago
tka	tka: make storage a parameter rather than an Authority struct member	2 years ago
tool	.github/workflows: add tsconnect static build to wasm GitHub action	2 years ago
tsconst	net/interfaces/windows: update Tailscale interface detection logic to	3 years ago
tsnet	tsnet: cleanup resources upon start failure (#5301 )	2 years ago
tstest	all: use syncs.AtomicValue	2 years ago
tstime	tstime/mono: fix Before function comment	3 years ago
tsweb	all: gofmt for Go 1.19	2 years ago
types	tka: support rotating node-keys in node-key signatures	2 years ago
util	util/deephash: use unsafe.Pointer instead of reflect.Value (#5459 )	2 years ago
version	all: use syncs.AtomicValue	2 years ago
wf	all: convert more code to use net/netip directly	2 years ago
wgengine	wgengine: use a singleflight.Group to reduce status contention (#5450 )	2 years ago
words	words: The lists continue to drag-on. (#4780 )	3 years ago
.gitattributes	.: add .gitattributes entry to use Go hunk-header driver	3 years ago
.gitignore	Makefile: update make spk target to use the new go spk builder	3 years ago
ALPINE.txt	Docker: add ALPINE.txt to manage alpine versions	2 years ago
AUTHORS	Move Linux client & common packages into a public repo.	5 years ago
CODE_OF_CONDUCT.md	Add a code of conduct.	5 years ago
Dockerfile	docs/k8s: use job control in run.sh	2 years ago
Dockerfile.base	Dockerfile: bump alpine to 3.16	2 years ago
LICENSE	LICENSE: Reformat for Github	4 years ago
Makefile	Makefile: add target for wasm and make it part of check	2 years ago
PATENTS	Move Linux client & common packages into a public repo.	5 years ago
README.md	all: require Go 1.19	2 years ago
SECURITY.md	Add a SECURITY.md for vulnerability reports.	5 years ago
VERSION.txt	VERSION.txt: this is v1.29.0	2 years ago
api.md	api.md: added missing quote to POST DNS Searchpaths request body example	2 years ago
build_dist.sh	build_dist.sh: add --box and --extra-small flag to produce smaller and boxed binaries	2 years ago
build_docker.sh	Dockerfile: bump alpine to 3.16	2 years ago
go.mod	build(deps): bump github.com/u-root/u-root from 0.8.0 to 0.9.0	2 years ago
go.sum	build(deps): bump github.com/u-root/u-root from 0.8.0 to 0.9.0	2 years ago
go.toolchain.branch	go.toolchain.rev: switch to Go 1.19rc2+	2 years ago
go.toolchain.rev	all: require Go 1.19	2 years ago
pull-toolchain.sh	go.toolchain.rev: add update script	3 years ago
shell.nix	shell.nix: update Go toolchain to 1.19	2 years ago
staticcheck.conf	staticcheck.conf: remove unnecessary warning	3 years ago
version-embed.go	Docker: add ALPINE.txt to manage alpine versions	2 years ago

README.md

Tailscale

https://tailscale.com

Private WireGuard® networks made easy

Overview

This repository contains all the open source Tailscale client code and the tailscaled daemon and tailscale CLI tool. The tailscaled daemon runs on Linux, Windows and macOS, and to varying degrees on FreeBSD, OpenBSD, and Darwin. (The Tailscale iOS and Android apps use this repo's code, but this repo doesn't contain the mobile GUI code.)

The Android app is at https://github.com/tailscale/tailscale-android

The Synology package is at https://github.com/tailscale/tailscale-synology

Using

We serve packages for a variety of distros at https://pkgs.tailscale.com .

Other clients

The macOS, iOS, and Windows clients use the code in this repository but additionally include small GUI wrappers that are not open source.

Building

go install tailscale.com/cmd/tailscale{,d}

If you're packaging Tailscale for distribution, use build_dist.sh instead, to burn commit IDs and version info into the binaries:

./build_dist.sh tailscale.com/cmd/tailscale
./build_dist.sh tailscale.com/cmd/tailscaled

If your distro has conventions that preclude the use of build_dist.sh, please do the equivalent of what it does in your distro's way, so that bug reports contain useful version information.

We require the latest Go release, currently Go 1.19.

Bugs

Please file any issues about this code or the hosted service on the issue tracker.

Contributing

PRs welcome! But please file bugs. Commit messages should reference bugs.

We require Developer Certificate of Origin Signed-off-by lines in commits.

About Us

Tailscale is primarily developed by the people at https://github.com/orgs/tailscale/people. For other contributors, see:

Legal

WireGuard is a registered trademark of Jason A. Donenfeld.