4660a961eb
Processing a peer add/remove delta still materialized the full netmap (an O(n) slicesx.MapValues plus sort over all peers, at 10k+ peers in a large tailnet) twice per delta: once in UpdateNetmapDelta purely to hand the self node to Engine.SetSelfNode, and once in authReconfigLocked. Neither needs peers anymore. SetSelfNode gets the self node from the existing nodeBackend.Self accessor. authReconfigLocked only reads self-node fields (SelfNode, NodeKey, GetAddresses, HasCap) now that WireGuard peers ride the incremental route manager and per-peer config source, so it can use the peers-free NetMap accessor. That also makes nmcfg.WGCfg vestigial: since wgcfg.Config lost its Peers field, its peer walk existed only to emit the [v1] skip logs (expired peers, unselected exit nodes, unaccepted subnet routes), duplicating filtering the route manager already does. Delete the package and construct the two-field wgcfg.Config inline. The skip logs go away; if they're missed, the route manager can log them incrementally at upsert time instead of rescanning every peer on every reconfig. With this, the runtime.DidRange analysis (see the ts_rangehook test) shows a delta netmap update performing no O(n) range loops except updateRouteManagerExtras, and the delta phase of that test drops from 1.09s to 0.14s for 400 deltas at n=10000 (from 4.79s at the start of this effort, before the incremental route manager work). Updates #12542 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com> Change-Id: Ia0e03ef9db0c988790b2c29de1f0505305e93f58 |
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Tailscale
Private WireGuard® networks made easy
Overview
This repository contains the majority of Tailscale's open source code.
Notably, it includes the tailscaled daemon and
the tailscale CLI tool. The tailscaled daemon runs on Linux, Windows,
macOS, and to varying degrees
on FreeBSD and OpenBSD. The Tailscale iOS and Android apps use this repo's
code, but this repo doesn't contain the mobile GUI code.
Other Tailscale repos of note:
- the Android app is at https://github.com/tailscale/tailscale-android
- the Synology package is at https://github.com/tailscale/tailscale-synology
- the QNAP package is at https://github.com/tailscale/tailscale-qpkg
- the Chocolatey packaging is at https://github.com/tailscale/tailscale-chocolatey
For background on which parts of Tailscale are open source and why, see https://tailscale.com/opensource/.
Using
We serve packages for a variety of distros and platforms 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. The GUI wrappers on non-open source platforms are themselves not open source.
Building
We always require the latest Go release, currently Go 1.26. (While we build releases with our Go fork, its use is not required.)
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.
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.
See commit-messages.md (or skim git log) for our commit message style.
About Us
Tailscale is primarily developed by the people at https://github.com/orgs/tailscale/people. For other contributors, see:
- https://github.com/tailscale/tailscale/graphs/contributors
- https://github.com/tailscale/tailscale-android/graphs/contributors
Legal
WireGuard is a registered trademark of Jason A. Donenfeld.