Commit Graph
100 Commits
Author SHA1 Message Date
Brad FitzpatrickandBrad Fitzpatrick 5e81840b57 tstest: add RequireRoot helper
Start using a common helper for tests to declare that they require root.

This is step 1. A later step will then make this helper track which tests were
skipped so a subsequent pass will run these test as root.

Updates tailscale/corp#40007

Change-Id: I4979e1def0fa3691d38c83f48c89aaa443e7f62e
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-04-10 10:48:50 -07:00
Brad FitzpatrickandBrad Fitzpatrick dca1d8eea1 tstest/natlab: add TestSubnetRouterFreeBSD with FreeBSD cloud image support
As a warm-up to making natlab support multiple operating systems,
start with an easy one (in that it's also Unixy and open source like
Linux) and add FreeBSD 15.0 as a VM OS option for the vmtest
integration test framework, and add TestSubnetRouterFreeBSD which
tests subnet routing through a FreeBSD VM (Gokrazy → FreeBSD →
Gokrazy).

Key changes:
- Add FreeBSD150 OSImage using the official FreeBSD 15.0
  BASIC-CLOUDINIT cloud image (xz-compressed qcow2)
- Add GOOS()/IsFreeBSD() methods to OSImage for cross-compilation
  and OS-specific behavior
- Handle xz-compressed image downloads in ensureImage
- Refactor compileBinaries into compileBinariesForOS to support
  multiple GOOS targets (linux, freebsd), with binaries registered
  at <goos>/<name> paths on the file server VIP
- Add FreeBSD-specific cloud-init (nuageinit) user-data generation:
  string-form runcmd (nuageinit doesn't support YAML arrays),
  fetch(1) instead of curl, FreeBSD sysctl names for IP forwarding,
  mkdir /usr/local/bin, PATH setup for tta
- Skip network-config in cidata ISO for FreeBSD (DHCP via rc.conf)

Updates tailscale/tailscale#13038

Change-Id: Ibeb4f7d02659d5cd8e3a7c3a66ee7b1a92a0110d
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-04-09 07:49:07 -07:00
Brad FitzpatrickandBrad Fitzpatrick ec0b23a21f vmtest: add VM-based integration test framework
Add tstest/natlab/vmtest, a high-level framework for running multi-VM
integration tests with mixed OS types (gokrazy + Ubuntu/Debian cloud
images) connected via natlab's vnet virtual network.

The vmtest package provides:
  - Env type that orchestrates vnet, QEMU processes, and agent connections
  - OS image support (Gokrazy, Ubuntu2404, Debian12) with download/cache
  - QEMU launch per OS type (microvm for gokrazy, q35+KVM for cloud)
  - Cloud-init seed ISO generation with network-config for multi-NIC
  - Cross-compilation of test binaries for cloud VMs
  - Debug SSH NIC on cloud VMs for interactive debugging
  - Test helpers: ApproveRoutes, HTTPGet, TailscalePing, DumpStatus,
    WaitForPeerRoute, SSHExec

TTA enhancements (cmd/tta):
  - Parameterize /up (accept-routes, advertise-routes, snat-subnet-routes)
  - Add /set, /start-webserver, /http-get endpoints
  - /http-get uses local.Client.UserDial for Tailscale-routed requests
  - Fix /ping for non-gokrazy systems

TestSubnetRouter exercises a 3-VM subnet router scenario:
  client (gokrazy) → subnet-router (Ubuntu, dual-NIC) → backend (gokrazy)
  Verifies HTTP access to the backend webserver through the Tailscale
  subnet route. Passes in ~30 seconds.

Updates tailscale/tailscale#13038

Change-Id: I165b64af241d37f5f5870e796a52502fc56146fa
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-04-08 17:24:18 -07:00
Brad FitzpatrickandBrad Fitzpatrick 647deed2d9 misc: add install-git-hooks.go and git hook for Change-Id tracking
Add misc/install-git-hooks.go and misc/git_hook/ to the OSS repo,
adapted from the corp repo. The primary motivation is Change-Id
generation in commit messages, which provides a persistent identifier
for a change across cherry-picks between branches.

The installer uses "git rev-parse --git-common-dir" instead of go-git
to find the hooks directory, avoiding a new direct dependency while
still supporting worktrees.

Hooks included:
- commit-msg: adds Change-Id trailer
- pre-commit: blocks NOCOMMIT / DO NOT SUBMIT markers
- pre-push: blocks local-directory replace directives in go.mod
- post-checkout: warns when the hook binary is outdated

Also update docs/commit-messages.md to reflect that Change-Id is no
longer optional in the OSS repo.

Updates tailscale/corp#39860

Change-Id: I09066b889118840c0ec6995cc03a9cf464740ffa
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-04-08 15:10:53 -07:00
Brad FitzpatrickandBrad Fitzpatrick 8a9840d6a8 tool: replace go.cmd with a 19KB Rust go.exe wrapper
go.cmd used cmd.exe to invoke PowerShell, which mangled arguments:
cmd.exe treats ^ as an escape character (so -run "^$" became -run "$",
running all tests instead of none) and = signs also caused issues in
the PowerShell→cmd.exe argument passing layer.

Replace it with a tiny no_std Rust binary (19KB, 32-bit x86 for
universal Windows compat: x86/x64/ARM64) that directly invokes the
Tailscale Go toolchain via CreateProcessW. The raw command line from
GetCommandLineW is passed through to CreateProcessW with only argv[0]
replaced, so arguments are never parsed or re-escaped.

The binary also handles first-run toolchain download natively using
curl.exe and tar.exe (both ship with Windows 10+), so PowerShell is
no longer required for normal operation. The PowerShell fallback is
only used for the rare TS_USE_GOCROSS=1 path.

PowerShell prefers go.exe over go.cmd when resolving ./tool/go, so
this is a drop-in replacement.

With go.exe in place, the CI can use the natural -bench=. -benchtime=1x
-run="^$" flags directly.

Also removes tool/go-win.ps1 which is now unused.

Updates #19255

Change-Id: I80da23285b74796e7694b89cff29a9fa0eaa6281
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-04-08 14:08:30 -07:00
Brad FitzpatrickandBrad Fitzpatrick 814161303f tstest/natlab/vnet: add multi-NIC node support, DHCP fixes, and VIPs
Multi-NIC support:
  - Add nodeNIC type and node.extraNICs for secondary network interfaces
  - Add netForMAC/macForNet to route packets to the correct network by MAC
  - Update initFromConfig to allocate a MAC + LAN IP per network
  - Fix handleEthernetFrameFromVM, ServeUnixConn to use netForMAC
  - Fix MACOfIP, writeEth, WriteUDPPacketNoNAT, gVisor write path, and
    createARPResponse to use macForNet (return the MAC actually on that
    network, not the node's primary MAC)
  - Fix createDHCPResponse for multi-NIC (correct client IP and subnet)
  - Add nodeNICMac for secondary NIC MAC generation
  - Add Node accessors: NumNICs, NICMac, Networks, LanIP

DHCP fixes:
  - Include LeaseTime, SubnetMask, Router, DNS in DHCP Offer (not just
    Ack). systemd-networkd requires these to accept an Offer.
  - Fix DHCP response source IP: use gateway IP instead of echoing
    the request's destination (which was 255.255.255.255 for discovers)

New VIPs:
  - cloud-init.tailscale: serves per-node cloud-init meta-data, user-data,
    and network-config for VMs booting with nocloud datasource
  - files.tailscale: serves binary files (tta, tailscale, tailscaled)
    registered via RegisterFile for cloud VM provisioning
  - Add ControlServer() accessor for test control server

This is necessary for a three-VM natlab subnet router
integration test, coming later.

Updates #13038

Change-Id: I59f9f356bae9b5509c117265237983972dfdd5af
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-04-08 11:04:26 -07:00
Brad FitzpatrickandBrad Fitzpatrick ccef06b968 tstest/integration/testcontrol: notify peers when subnet routes change
When SetSubnetRoutes is called, also send updatePeerChanged to all
other connected nodes so they re-fetch their MapResponse and learn
about the updated AllowedIPs. Without this, peers never see new
subnet routes until they happen to reconnect to the control server.

Discovered while working on a three-VM natlab subnet router
integration test, coming later.

Updates #13038

Change-Id: I20e7a2fda994a8ab0e7a24240e6eae536f4f5f15
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-04-08 10:39:09 -07:00
Brad FitzpatrickandBrad Fitzpatrick a182b864ac tsd, all: add Sys.ExtraRootCAs, plumb through TLS dial paths
Add ExtraRootCAs *x509.CertPool to tsd.System and plumb it through
the control client, noise transport, DERP, and wgengine layers so
that platforms like Android can inject user-installed CA certificates
into Go's TLS verification.

tlsdial.Config now honors base.RootCAs as additional trusted roots,
tried after system roots and before the baked-in LetsEncrypt fallback.
SetConfigExpectedCert gets the same treatment for domain-fronted DERP.

The Android client will set sys.ExtraRootCAs with a pool built from
x509.SystemCertPool + user-installed certs obtained via the Android
KeyStore API, replacing the current SSL_CERT_DIR environment variable
approach.

Updates #8085

Change-Id: Iecce0fd140cd5aa0331b124e55a7045e24d8e0c2
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-04-07 18:10:54 -07:00
Brad FitzpatrickandBrad Fitzpatrick c4cb5eb809 go.toolchain.rev: update to Go 1.26.2
Updates tailscale/corp#39799

Change-Id: I87c8dbabbbb7df750eb751fd7bfc506f57ca5796
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-04-07 17:09:56 -07:00
Brad FitzpatrickandBrad Fitzpatrick 8a7e160a6e ipn/desktop: move behind feature/condregister
Move the ipn/desktop blank import from cmd/tailscaled/tailscaled_windows.go
into feature/condregister/maybe_desktop_sessions.go, consistent with how
all other modular features are registered. tailscaled already imports
feature/condregister, so it still gets ipn/desktop on Windows.

Updates #12614

Change-Id: I92418c4bf0e67f0ab40542e47584762ac0ffa2b2
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-04-07 11:37:47 -07:00
Brad FitzpatrickandBrad Fitzpatrick 1b5b43787c ipn/localapi, cli, clientmetric: add ipnbus feature tag; fix omit.go stub
Add a new "ipnbus" build feature tag so the watch-ipn-bus LocalAPI
endpoint can be independently controlled, rather than being gated
behind HasDebug || HasServe. Minimal/embedded builds that omit both
debug and serve were getting 404s on watch-ipn-bus, breaking
"tailscale up --authkey=..." and other CLI flows that depend on
WatchIPNBus.

In the CLI, check buildfeatures.HasIPNBus before attempting to watch
the IPN bus in "tailscale up"/"tailscale login", and exit early with
an informational message when the feature is omitted.

Also add the missing NewCounterFunc stub to clientmetric/omit.go,
which caused compilation errors when building with
ts_omit_clientmetrics and netstack enabled.

Fixes #19240

Change-Id: I2e3c69a72fc50fa02542b91b8a54859618a463d1
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-04-07 10:22:37 -07:00
Brad FitzpatrickandBrad Fitzpatrick 2b1cfa7c4d ssh/tailssh: fix race in session termination message delivery
When a recording upload fails mid-session, the recording goroutine
cancels the session context. This triggers two concurrent paths:
exec.CommandContext kills the process (causing cmd.Wait to return),
and killProcessOnContextDone tries to write the termination message
via exitOnce.Do. If cmd.Wait returns first, the main goroutine's
exitOnce.Do(func(){}) steals the once, and the termination message
is never written to the client.

Fix by waiting for killProcessOnContextDone to finish writing the
termination message (via <-ss.exitHandled) before claiming exitOnce,
when the context is already done.

Also fix the fallback path when launchProcess itself fails due to
context cancellation: use SSHTerminationMessage() with the correct
"\r\n\r\n" framing instead of fmt.Fprintf with the internal error
string.

Deflakes TestSSHRecordingCancelsSessionsOnUploadFailure, which was
failing consistently at a low rate due to the exitOnce race. After
this fix, flakestress passes with 8,668 runs, 0 failures.

Fixes #7707 (again. hopefully for good.)

Change-Id: I5ab911c71574db8d3f9d979fb839f273be51ecf9
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-04-07 05:31:16 -07:00
Brad FitzpatrickandBrad Fitzpatrick d0cd0906d5 go.toolchain.rev: bump our Go toolchain for caching fix
Updates tailscale/go#166
Updates tailscale/corp#36589

Change-Id: I7e286b392fda8f944440feaf62c0fe7b8b85ba21
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-04-06 12:43:02 -07:00
Brad FitzpatrickandBrad Fitzpatrick 4111d4be4b ssh/tailssh: fix integration test hang due to missing host keys
Commit f905871fb moved host key generation from the ipnLocalBackend
interface (GetSSH_HostKeys) to the standalone getHostKeys function,
which requires either system host keys in /etc/ssh/ or a valid
TailscaleVarRoot to generate keys into. The testBackend returned ""
for TailscaleVarRoot, and the Docker test containers only install
openssh-client (no server host keys), so getHostKeys always failed.

When getHostKeys fails, HandleSSHConn returns the error but never
closes the TCP connection, so SSH clients hang forever waiting for
the server hello.

Fix by creating a temp directory in TestMain and returning it from
testBackend.TailscaleVarRoot().

Regression from f905871fb #18949 ("ipn/ipnlocal, feature/ssh: move SSH code
out of LocalBackend to feature").

I was apparently too impatient to wait for the test to complete
and didn't connect the dots: https://github.com/tailscale/tailscale/actions/runs/22930275950

We should make that test faster (#19244) for the patience issue, but
also fail more nicely if this happens in the future.

Updates #19244

Change-Id: If82393b8f35413b04174e6f7d09a1ee3a2125a6b
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-04-06 09:29:31 -07:00
Brad FitzpatrickandBrad Fitzpatrick 86f42ea87b cmd/cloner, cmd/viewer: handle named map/slice types with Clone/View methods
The cloner and viewer code generators didn't handle named types
with basic underlying types (map/slice) that have their own Clone
or View methods. For example, a type like:

    type Map map[string]any
    func (m Map) Clone() Map { ... }
    func (m Map) View() MapView { ... }

When used as a struct field, the cloner would descend into the
underlying map[string]any and fail because it can't clone the any
(interface{}) value type. Similarly, the viewer would try to create
a MapFnOf view and fail.

Fix the cloner to check for a Clone method on the named type
before falling through to the underlying type handling.

Fix the viewer to check for a View method on named map/slice types,
so the type author can provide a purpose-built safe view that
doesn't leak raw any values. Named map/slice types without a View
method fall through to normal handling, which correctly rejects
types like map[string]any as unsupported.

Updates tailscale/corp#39502 (needed by tailscale/corp#39594)

Change-Id: Iaef0192a221e02b4b8e409c99ef8398090327744
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-04-05 20:20:32 -07:00
Brad FitzpatrickandBrad Fitzpatrick 5a899e406d ipn/ipnlocal: add health.Tracker to tests where it was warning in CI
To denoise log output, to make it easier to find real failures.

Updates #19252

Change-Id: Iae64a9278c70de24a236c39e3d181a509a512a0b
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-04-05 20:20:07 -07:00
Brad FitzpatrickandBrad Fitzpatrick 85827f7503 ci: fix Windows benchmarks running all tests instead of just benchmarks
The -run "^$" flag was being mangled by cmd.exe's argument processing.
The ^ character is cmd.exe's escape character, so go.cmd's cmd.exe layer
eats it, turning -run "^$" into -run "$" which matches all test names.
This caused the benchmark job to run every test, leading to timeouts
and Go runtime crashes.

Use -run XXXXNothingXXXX instead, which avoids special characters
entirely.

Updates #19252

Change-Id: I888c124254dd2767a40b61bcd68dbc9b22ad35a1
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-04-05 20:20:07 -07:00
Brad FitzpatrickandBrad Fitzpatrick 7b5b9f5ce2 client/web: fix nil metricCapture crash in mockLocalAPI
The upload-client-metrics handler called metricCapture without
checking if it was nil or if the metrics slice was empty. Most
tests pass nil for metricCapture, so if a metrics upload races
in during the test, it panics.

Fixes #19252

Change-Id: Ib904d1fe6779067dc2a153d1680b8f50cba9c773
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-04-05 20:20:07 -07:00
Brad FitzpatrickandBrad Fitzpatrick 5ef3713c9f cmd/vet: add subtestnames analyzer; fix all existing violations
Add a new vet analyzer that checks t.Run subtest names don't contain
characters requiring quoting when re-running via "go test -run". This
enforces the style guide rule: don't use spaces or punctuation in
subtest names.

The analyzer flags:
- Direct t.Run calls with string literal names containing spaces,
  regex metacharacters, quotes, or other problematic characters
- Table-driven t.Run(tt.name, ...) calls where tt ranges over a
  slice/map literal with bad name field values

Also fix all 978 existing violations across 81 test files, replacing
spaces with hyphens and shortening long sentence-like names to concise
hyphenated forms.

Updates #19242

Change-Id: Ib0ad96a111bd8e764582d1d4902fe2599454ab65
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-04-05 15:52:51 -07:00
Brad FitzpatrickandBrad Fitzpatrick 990d25c97d go.toolchain.rev, version: bump Tailscale Go, add IsTailscaleGo
Reports whether the current binary was built with Tailscale's
custom Go toolchain (the "tailscale_go" build tag).

For https://github.com/tailscale/go/pull/165

Updates tailscale/corp#39430

Change-Id: Ica437582ddf55d7df48b1453bad03ce14b1c0949
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-04-01 09:40:59 -07:00
Brad FitzpatrickandBrad Fitzpatrick 2b1030a431 release/dist/unixpkgs: include tailscale-online.target in packages
The tailscale-online.target and tailscale-wait-online.service systemd
units were added in 30e12310f1 but never included in the release
packaging (tarballs, debs, rpms).

Updates #11504

Change-Id: I93e03e1330a7ff8facf845c7ca062ed2f0d35eaa
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-03-26 13:42:58 -07:00
Brad FitzpatrickandBrad Fitzpatrick ac19bd5e7a feature/featuretags: skip TestAllOmitBuildTagsDeclared when not in a git repo
This test was failing on Alpine's CI which had 'git' but wasn't in a git repo:

https://github.com/tailscale/tailscale/commit/036b6a12621306da8368b167deb9858d4a8d6ce9#commitcomment-180001647

Updates #12614

Change-Id: Ic1b8856aaf020788a2a57e48738851e13ea85a93
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-03-19 10:34:21 -07:00
Brad FitzpatrickandGitHub 156d97c549 derp/derpserver: fix locking in a few expvar.Func metrics (#19031)
Fixes #19030
Fixes tailscale/corp#38782

Change-Id: I53082059d4012b9765b5596f7023717282132888

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-03-18 14:26:01 -04:00
Brad FitzpatrickandBrad Fitzpatrick 9826db3e06 docs: add new package to go:embed commit-messages.md
Updates tailscale/corp#12154

Change-Id: I8b253ce964f62736678f44bdf67881430636b14a
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-03-17 10:53:55 -07:00
Brad FitzpatrickandBrad Fitzpatrick 54606a0a89 wgengine/netstack: don't register subnet/4via6 TCP flows with proxymap
Fixes #18991

Change-Id: I29a609dcd401854026aef4a5ad8d5806c3249ea6
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-03-13 19:41:30 -07:00
Brad FitzpatrickandBrad Fitzpatrick 4c91f90776 tstest/integration: add userspace-networking + proxymap WhoIs integration test
Before sending a fix for #18991, this adds an integration test that
locks in that the proxymap WhoIs code works with two nodes running as
different users, with the second node running a localhost service and
able to use its local tailscaled to identify a Tailscale connection
from the other tailscaled.

Updates #18991

Change-Id: I6fbb0810204d77d2ac558f0cc786b73e3248d031
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-03-13 15:01:31 -07:00
Brad FitzpatrickandBrad Fitzpatrick dd480f0fb9 gokrazy: fix busybox breakglass support, add test
Updates #1866

Change-Id: Ica73ae8268b08a04ae97bc570869a04180585e75
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-03-12 11:25:31 -07:00
Brad FitzpatrickandBrad Fitzpatrick 073a9a8c9e wgengine{,/magicsock}: add DERP hooks for filtering+sending packets
Add two small APIs to support out-of-tree projects to exchange custom
signaling messages over DERP without requiring disco protocol
extensions:

- OnDERPRecv callback on magicsock.Options / wgengine.Config: called for
  every non-disco DERP packet before the peer map lookup, allowing callers
  to intercept packets from unknown peers that would otherwise be dropped.

- SendDERPPacketTo method on magicsock.Conn: sends arbitrary bytes to a
  node key via a DERP region, creating the connection if needed. Thin
  wrapper around the existing internal sendAddr.

Also allow netstack.Start to accept a nil LocalBackend for use cases
that wire up TCP/UDP handlers directly without a full LocalBackend.

Updates tailscale/corp#24454

Change-Id: I99a523ef281625b8c0024a963f5f5bf5d8792c17
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-03-11 16:37:19 -07:00
Brad FitzpatrickandBrad Fitzpatrick 70de111394 wgengine/magicsock: fix three race conditions in TestTwoDevicePing
Fix three independent flake sources, at least as debugged by Claude,
though empirically no longer flaking as it was before:

1. Poll for connection counter data instead of reading immediately.
   The conncount callback fires asynchronously on received WireGuard
   traffic, so after counts.Reset() there is no guarantee the counter
   has been repopulated before checkStats reads it. Use tstest.WaitFor
   with a 5s timeout to retry until a matching connection appears.

2. Replace the *2 symmetry assumption in global metric assertions.
   metricSendUDP and friends are AggregateCounters that sum per-conn
   expvars from both magicsock instances. The old assertion assumed
   both instances had identical packet counts, which breaks under
   asymmetric background WireGuard activity (handshake retries, etc).
   The new assertGlobalMetricsMatchPerConn computes the actual sum of
   both conns' expvars and compares against the AggregateCounter value.

3. Tolerate physical stats being 0 when user metrics are non-zero.
   A rebind event replaces the socket mid-measurement, resetting the
   physical connection counter while user metrics still reflect packets
   processed before the rebind. Log instead of failing in this case.
   Also move counts.Reset() after metric reads and reorder the reset
   sequence (counts before metrics) to minimize the race window.

Fixes tailscale/tailscale#13420

Change-Id: I7b090a4dc229a862c1a52161b3f2547ec1d1f23f
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-03-11 07:34:52 -07:00
Brad FitzpatrickandBrad Fitzpatrick 16fa81e804 wgengine: add API to force a disco key for experiments, testing
Updates #12639
Updates tailscale/corp#24454

Change-Id: I2361206aec197a7eecbdf29d87b1b75335ee8eec
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-03-10 20:42:29 -07:00
Brad FitzpatrickandBrad Fitzpatrick f905871fb1 ipn/ipnlocal, feature/ssh: move SSH code out of LocalBackend to feature
This makes tsnet apps not depend on x/crypto/ssh and locks that in with a test.

It also paves the wave for tsnet apps to opt-in to SSH support via a
blank feature import in the future.

Updates #12614

Change-Id: Ica85628f89c8f015413b074f5001b82b27c953a9
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-03-10 17:27:17 -07:00
Brad FitzpatrickandBrad Fitzpatrick 99e3e9af51 ssh/tailssh: mark TestSSHRecordingCancelsSessionsOnUploadFailure as flaky again
Updates #7707

Change-Id: I98cdace78cd5060643894fb0c9be02574edb2894
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-03-10 15:49:54 -07:00
Brad FitzpatrickandBrad Fitzpatrick 99bde5a406 tstest/integration: deflake TestCollectPanic
Two issues caused TestCollectPanic to flake:

1. ETXTBSY: The test exec'd the tailscaled binary directly without
   going through StartDaemon/awaitTailscaledRunnable, so it lacked
   the retry loop that other tests use to work around a mysterious
   ETXTBSY on GitHub Actions.

2. Shared filch files: The test didn't pass --statedir or TS_LOGS_DIR,
   so all parallel test instances wrote panic logs to the shared system
   state directory (~/.local/share/tailscale). Concurrent runs would
   clobber each other's filch log files, causing the second run to not
   find the panic data from the first.

Fix both by adding awaitTailscaledRunnable before the first exec, and
passing --statedir and TS_LOGS_DIR to isolate each test's log files,
matching what StartDaemon does.

It now passes x/tools/cmd/stress.

Fixes #15865

Change-Id: If18b9acf8dbe9a986446a42c5d98de7ad8aae098
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-03-10 14:16:47 -07:00
Brad FitzpatrickandBrad Fitzpatrick 525f7a1e47 types/key: add NodePrivate.Raw32 and DiscoPrivateFromRaw32
Raw byte accessors for key types, mirroring existing patterns
(NodePublic.Raw32 and DiscoPublicFromRaw32 already exist).

NodePrivate.Raw32 returns the raw 32 bytes of a node private key.
DiscoPrivateFromRaw32 parses a 32-byte raw value as a DiscoPrivate.

Updates tailscale/corp#24454

Change-Id: Ibc08bed14ab359eddefbebd811c375b6365c7919
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-03-10 07:36:35 -07:00
Brad FitzpatrickandBrad Fitzpatrick 32adca78f1 pull-toolchain.sh: advance the next hash if it's behind
Updates tailscale/corp#36382

Change-Id: Ida55b7b1a2cdd0a4653bb41852008e7088fc4a48
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-03-10 06:58:53 -07:00
Brad FitzpatrickandAaron Klotz 0023f1a969 .github/workflows: use tailscale/go for Windows CI too
We did so for Linux and macOS already, so also do so for Windows. We
only didn't already because originally we never produced binaries for
it (due to our corp repo not needing them), and later because we had
no ./tool/go wrapper. But we have both of those things now.

Updates #18884

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-03-09 15:36:24 -07:00
Brad FitzpatrickandBrad Fitzpatrick 633e892164 ssh/tailssh: fix race between termination message write and session teardown
When a recording upload fails mid-session, killProcessOnContextDone
writes the termination message to ss.Stderr() and kills the process.
Meanwhile, run() takes the ss.ctx.Done() path and proceeds to
ss.Exit(), which tears down the SSH channel. The termination message
write races with the channel teardown, so the client sometimes never
receives it.

Fix by adding an exitHandled channel that killProcessOnContextDone
closes when done. run() now waits on this channel after ctx.Done()
fires, ensuring the termination message is fully written before
the SSH channel is torn down.

Fixes #7707

Change-Id: Ib60116c928d3af46d553a4186a72963c2c731e3e
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-03-09 14:11:07 -07:00
Brad FitzpatrickandBrad Fitzpatrick e400d5aa7b cmd/testwrapper: make test tolerant of a GOEXPERIMENT being set
Otherwise it generates an syntactically invalid go.mod file
and subsequently fails.

Updates #18884

Change-Id: I1a0ea17a57b2a37bde3770187e1a6e2d8aa55bfe
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-03-06 14:05:35 -08:00
Brad FitzpatrickandBrad Fitzpatrick bd2a2d53d3 all: use Go 1.26 things, run most gofix modernizers
I omitted a lot of the min/max modernizers because they didn't
result in more clear code.

Some of it's older "for x := range 123".

Also: errors.AsType, any, fmt.Appendf, etc.

Updates #18682

Change-Id: I83a451577f33877f962766a5b65ce86f7696471c
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-03-06 13:32:03 -08:00
Brad FitzpatrickandBrad Fitzpatrick 4453cc5f53 go.mod: bump to Go 1.26.1
Updates #18682

Change-Id: I855c0dfa4c61eb33123bbb7b00c1ab5506e80b09
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-03-06 11:27:29 -08:00
Brad FitzpatrickandBrad Fitzpatrick 8e3d176f1c control/controlbase: deflake, speed up TestConnMemoryOverhead
This had gotten flaky with Go 1.26.

Use synctest + AllocsPerRun to make it fast and deterministic.

Updates #18682

Change-Id: If673d6ecd8c1177f59c1b9c0f3fca42309375dff
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-03-06 06:19:11 -08:00
Brad FitzpatrickandBrad Fitzpatrick 2a64c03c95 types/ptr: deprecate ptr.To, use Go 1.26 new
Updates #18682

Change-Id: I62f6aa0de2a15ef8c1435032c6aa74a181c25f8f
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-03-05 20:13:18 -08:00
Brad FitzpatrickandBrad Fitzpatrick 8cfbaa717d go.mod: bump staticcheck to version that supports Go 1.26
Otherwise it gets confused on new(123) etc.

Updates #18682

Change-Id: I9e2e93ea24f2b952b2396dceaf094b4db64424b0
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-03-05 14:28:58 -08:00
Brad FitzpatrickandBrad Fitzpatrick 2810f0c6f1 all: fix typos in comments
Fix its/it's, who's/whose, wether/whether, missing apostrophes
in contractions, and other misspellings across the codebase.

Updates #cleanup

Change-Id: I20453b81a7aceaa14ea2a551abba08a2e7f0a1d8
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-03-05 13:52:01 -08:00
Brad FitzpatrickandBrad Fitzpatrick d784dcc61b go.toolchain.branch: switch to Go 1.26
Updates #18682

Change-Id: I1eadfab950e55d004484af880a5d8df6893e85e8
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-03-04 21:57:05 -08:00
Brad FitzpatrickandBrad Fitzpatrick 87bf76de89 net/porttrack: change magic listen address format for Go 1.26
Go 1.26's url.Parser is stricter and made our tests elsewhere fail
with this scheme because when these listen addresses get shoved
into a URL, it can't parse back out.

I verified this makes tests elsewhere pass with Go 1.26.

Updates #18682

Change-Id: I04dd3cee591aa85a9417a0bbae2b6f699d8302fa
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-03-04 21:57:05 -08:00
Brad FitzpatrickandBrad Fitzpatrick 30adf4527b feature/portlist: address case where poller misses CollectServices updates
This is a minimal hacky fix for a case where the portlist poller extension
could miss updates to NetMap's CollectServices bool.

Updates tailscale/corp#36813

Change-Id: I9b50de8ba8b09e4a44f9fbfe90c9df4d8ab4d586
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-03-04 13:07:23 -08:00
Brad FitzpatrickandBrad Fitzpatrick d42b3743b7 net/porttrack: add net.Listen wrapper to help tests allocate ports race-free
Updates tailscale/corp#27805
Updates tailscale/corp#27806
Updates tailscale/corp#37964

Change-Id: I7bb5ed7f258e840a8208e5d725c7b2f126d7ef96
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-03-03 20:56:20 -08:00
Brad FitzpatrickandBrad Fitzpatrick a98036b41d go.mod: bump gvisor
Updates #8043

Change-Id: Ia229ad4f28f2ff20e0bdecb99ca9e1bd0356ad8e
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-02-26 18:29:36 -08:00
Brad FitzpatrickandBrad Fitzpatrick 15836e5624 util/set: make Set.Slice return elements in sorted order for ordered types
This makes Set.MarshalJSON produce deterministic output in many cases now.
We still need to do make it deterministic for non-ordered types.

Updates #18808

Change-Id: I7f341ec039c661a8e88d07d7f4dc0f15d5d4ab86
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-02-26 08:40:06 -08:00
Brad FitzpatrickandBrad Fitzpatrick 7370c24eb4 tool/listpkgs: add --affected-by-tag
For paring back build tag variant CI runs' set of packages to test.

Updates tailscale/corp#28679

Change-Id: Iba46fd1f58c1eaee1f7888ef573bc8b14fa73208
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-02-25 11:41:33 -08:00
Brad FitzpatrickandBrad Fitzpatrick eb819c580e cmd/containerboot, net/dns/resolver: remove unused funcs in tests
staticcheck was complaining about it on a PR
I sent: https://github.com/tailscale/tailscale/actions/runs/22408882872/job/64876543467?pr=18804

And: https://github.com/tailscale/tailscale/actions/runs/22408882872/job/64876543475?pr=18804

Updates #cleanup
Updates #18157

Change-Id: I6225481f3aab9e43ef1920aa1a12e86c5073a638
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-02-25 10:24:04 -08:00
Brad FitzpatrickandBrad Fitzpatrick a58a8fc1e8 .: permit running binary built with TS_GO_NEXT=1
The old check was too aggressive and required TS_GO_NEXT=1 at runtime
as well, which is too strict and onerous.

This is a sanity check only (and an outdated one, at that); it's okay for
it to be slightly loose and permit two possible values. If either is working,
we're already way past the old bug that this was introduced to catch.

Updates tailscale/corp#36382

Change-Id: Ib9a62e10382cd889ba590c3539e6b8535c6b19fe
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-02-23 09:37:04 -08:00
Brad FitzpatrickandBrad Fitzpatrick a7a864419d net/dns: make MagicDNS IPv6 registration opt-out now, not opt-in
This adds a new ControlKnob to make MagicDNS IPv6 registration
(telling systemd/etc) opt-out rather than opt-in.

Updates #15404

Change-Id: If008e1cb046b792c6aff7bb1d7c58638f7d650b1
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-02-17 07:29:12 -10:00
a6390ca008 ssh/tailssh: fix data race on conn auth state in OnPolicyChange
OnPolicyChange can observe a conn in activeConns before authentication
completes. The previous `c.info == nil` guard was itself a data race
against clientAuth writing c.info, and even when c.info appeared
non-nil, c.localUser could still be nil, causing a nil pointer
dereference at c.localUser.Username.

Add an authCompleted atomic.Bool to conn, stored true after all auth
fields are written in clientAuth. OnPolicyChange checks this atomic
instead of c.info, which provides the memory barrier guaranteeing all
prior writes are visible to the concurrent reader.

Updates tailscale/corp#36268 (fixes, but we might want to cherry-pick)

Co-authored-by: Gesa Stupperich <gesa@tailscale.com>
Change-Id: I4c69843541f5f9f04add9bf431e320c65a203a39
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-02-16 13:02:46 -10:00
Brad FitzpatrickandGitHub bfc15cb57c cmd/cigocacher: remove Windows-specific disk code moved upstream (#18697)
Updates tailscale/corp#10808
Updates bradfitz/go-tool-cache#27

Change-Id: I27a2af63d882d916998933521f17e410692255ca
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Signed-off-by: Tom Proctor <tomhjp@users.noreply.github.com>
2026-02-16 16:26:39 +00:00
Brad FitzpatrickandBrad Fitzpatrick 3f3af841af tool/gocross: respect TS_GO_NEXT=1 in gocross too
The gocross-wrapper.sh bash script already checks TS_GO_NEXT (as of
a374cc344e) to select go.toolchain.next.rev over go.toolchain.rev,
but when TS_USE_GOCROSS=1 the Go binary itself was hardcoded to read
go.toolchain.rev. This makes gocross also respect the TS_GO_NEXT=1
environment variable.

Updates tailscale/corp#36382

Change-Id: I04bef25a34e7ed3ccb1bfdb33a3a1f896236c6ee
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-02-15 16:51:30 -10:00
Brad FitzpatrickandBrad Fitzpatrick 371d6369cd gokrazy: use monorepo for gokrazy appliance builds (monogok)
This switches our gokrazy builds to use a new variant of cmd/gok called
opinionated about using monorepos: https://github.com/bradfitz/monogok

And with that, we can get rid of all the go.mod files and builddir forests
under gokrazy/**.

Updates #13038
Updates gokrazy/gokrazy#361

Change-Id: I9f18fbe59b8792286abc1e563d686ea9472c622d
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-02-13 16:19:14 -08:00
Brad FitzpatrickandBrad Fitzpatrick d468870310 .github/workflows: bump oss-fuzz builder hash
Fixes #18710

Change-Id: I2ebad48b1227321233172beb9801087963ece4fa
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-02-12 14:25:17 -08:00
Brad FitzpatrickandBrad Fitzpatrick 068074c109 portlist: also tb.Skip benchmarks (not just tests) on bad Linux kernels
Updates #16966

Change-Id: I0269927bdf8e6c4e949fcf755ce7e5fd21386d7d
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-02-12 13:19:09 -08:00
Brad FitzpatrickandBrad Fitzpatrick 8e39a0aa0f go.toolchain.next.rev: update to final Go 1.26.0 [next]
This updates the TS_GO_NEXT=1 (testing) toolchain to Go 1.26.0

The default one is still Go 1.25.x.

Updates #18682

Change-Id: I99747798c166ce162ee9eee74baa9ff6744a62f6
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-02-10 20:44:30 -08:00
Brad FitzpatrickandBrad Fitzpatrick dc1d811d48 magicsock, ipnlocal: revert eventbus-based node/filter updates, remove Synchronize hack
Restore synchronous method calls from LocalBackend to magicsock.Conn
for node views, filter, and delta mutations. The eventbus delivery
introduced in 8e6f63cf1 was invalid for these updates because
subsequent operations in the same call chain depend on magicsock
already having the current state. The Synchronize/settleEventBus
workaround was fragile and kept requiring more workarounds and
introducing new mystery bugs.

Since eventbus was added, we've since learned more about when to use
eventbus, and this wasn't one of the cases.

We can take another swing at using eventbus for netmap changes in a
future change.

Fixes #16369
Updates #18575 (likely fixes)

Change-Id: I79057cc9259993368bb1e350ff0e073adf6b9a8f
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-02-10 07:32:05 -08:00
Brad FitzpatrickandBrad Fitzpatrick d26d3fcb95 .github/workflows: add macos runner
Fixes #18118

Change-Id: I118fcc6537af9ccbdc7ce6b78134e8059b0b5ccf
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-02-09 15:09:19 -08:00
Brad FitzpatrickandBrad Fitzpatrick a3215f1f9d cmd/tailscale,feature/featuretags: make webbrowser and colorable deps omittable
Add new "webbrowser" and "colorable" feature tags so that the
github.com/toqueteos/webbrowser and mattn/go-colorable packages
can be excluded from minbox builds.

Updates #12614

Change-Id: Iabd38b242f5a56aa10ef2050113785283f4e1fe8
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-02-08 10:04:04 -08:00
Brad FitzpatrickandBrad Fitzpatrick 0c5b17c1d3 cmd/tailscale: don't depend on regexp in minbox builds
Updates #12614
Updates #18562

Change-Id: Ife4f10c55d1d68569938ffd68ffe72eef889e200
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-02-06 09:43:15 -08:00
Brad FitzpatrickandBrad Fitzpatrick 036b6a1262 feature/featuretags: add test that all ts_omit_foo tags are declared
Updates #12614

Change-Id: I49351fe0c463af0b8d940e8088d4748906a8aec3
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-02-04 13:15:41 -08:00
Brad FitzpatrickandBrad Fitzpatrick 40cd54daf7 cmd/tailscale: remove dep on clientupdate package if feature is omitted
We already had a featuretag for clientupdate, but the CLI wasn't using
it, making the "minbox" build (minimal combined tailscaled + CLI
build) larger than necessary.

Updates #12614

Change-Id: Idd7546c67dece7078f25b8f2ae9886f58d599002
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-02-04 10:44:48 -08:00
Brad FitzpatrickandBrad Fitzpatrick 7b96c4c23e cmd/testwrapper: support experimental -cachelink
Updates tailscale/go#149

Change-Id: If0483466eb1fc2196838c75f6d53925b1809abff
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-02-03 09:10:07 -08:00
Brad FitzpatrickandBrad Fitzpatrick 8736fbb754 cmd/tailscale/cli: add 'wait' listening subcommand and ip --assert=<ip>
This provides a mechanism to block, waiting for Tailscale's IP to be
ready for a bind/listen, to gate the starting of other services.

It also adds a new --assert=[IP] option to "tailscale ip", for services
that want extra paranoia about what IP is in use, if they're worried about
having switched to the wrong tailnet prior to reboot or something.

Updates #3340
Updates #11504

... and many more, IIRC

Change-Id: I88ab19ac5fae58fd8c516065bab685e292395565
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-02-02 15:19:06 -08:00
Brad FitzpatrickandBrad Fitzpatrick 274ab995d2 go.toolchain.*: bump our Go 1.25 and Go 1.26 toolchains
Go1.25 for tailscale/go#149
Go1.26 for tailscale/go#149 + upstream release-branch.go1.26 work since rc2.

Updates tailscale/go#149

Change-Id: Ib56b5b5119f181c4a81d4b599b8bbdb405ee6704
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-02-01 13:47:28 -08:00
Brad FitzpatrickandBrad Fitzpatrick 3ce13eb2b9 cmd/testwrapper: add support for the -vet test flag
So callers can run testwrapper with -vet=off if they're already
running vet explicitly in a concurrent test job.

Updates tailscale/corp#28679

Change-Id: I74ad56e560076d187f5e3a7d7381e1dac89d860c
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-01-30 12:49:05 -08:00
Brad FitzpatrickandBrad Fitzpatrick 2d2d5e6cc7 .github/workflows: set CMD_GO_USE_GIT_HASH=true for our cmd/go
Updates tailscale/go#150
Updates tailscale/corp#28679

Change-Id: Ieb4780f157451f5c6660c96c6efaec9ddcfcb415
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-01-28 18:45:12 -08:00
Brad FitzpatrickandBrad Fitzpatrick 9e7f536a7c cmd/testwrapper: show "(cached)" for packages that hit the cache
We weren't parsing that out previously, making it look like tests
were re-running even though they were cached.

Updates tailscale/go#150
Updates tailscale/corp#28679
Updates tailscale/corp#34696

Change-Id: I6254362852a82ccc86ac464a805379d941408dad
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-01-28 18:25:03 -08:00
Brad FitzpatrickandBrad Fitzpatrick e39a730594 go.toolchain.rev: bump for cmd/go caching work
This pulls in tailscale/go#153, which we want to begin experimenting with.

Updates tailscale/go#150

Change-Id: Id3e03558ee69e74361431650530e8227dfdef978
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-01-28 14:59:46 -08:00
Brad FitzpatrickandBrad Fitzpatrick aca1b5da0f go.toolchain.rev: bump for cmd/go caching work
This pulls in tailscale/go#151, which we want to begin experimenting with.

Updates tailscale/go#150

Change-Id: I69aa2631ecf36356430969f423ea3943643a144a
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-01-28 10:46:21 -08:00
Brad FitzpatrickandBrad Fitzpatrick 72f736134d cmd/testwrapper/flakytest: skip flaky tests if TS_SKIP_FLAKY_TESTS set
This is for a future test scheduler, so it can run potentially flaky
tests separately, doing all the non-flaky ones together in one batch.

Updates tailscale/corp#28679

Change-Id: Ic4a11f9bf394528ef75792fd622f17bc01a4ec8a
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-01-28 08:54:33 -08:00
Brad FitzpatrickandBrad Fitzpatrick 8f8236feb3 cmd/printdep: add --next flag to use rc Go build hash instead
Updates tailscale/corp#36382

Change-Id: Ib7474b0aab901e98f0fe22761e26fd181650743c
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-01-27 14:49:56 -08:00
Brad FitzpatrickandBrad Fitzpatrick a374cc344e tool/gocross, pull-toolchain.sh: support a "next" Go toolchain
When TS_GO_NEXT=1 is set, update/use the
go.toolchain.next.{branch,rev} files instead.

This lets us do test deploys of Go release candidates on some
backends, without affecting all backends.

Updates tailscale/corp#36382

Change-Id: I00dbde87b219b720be5ea142325c4711f101a364
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-01-27 14:07:35 -08:00
Brad FitzpatrickandBrad Fitzpatrick 0df4631308 ipn/ipnlocal: avoid ResetAndStop panic
Updates #18187

Change-Id: If7375efb7df0452a5e85b742fc4c4eecbbd62717
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-12-11 09:07:45 -08:00
Brad FitzpatrickandBrad Fitzpatrick b8c58ca7c1 wgengine: fix TSMP/ICMP callback leak
Fixes #18112

Change-Id: I85d5c482b01673799d51faeb6cb0579903597502
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-12-02 11:06:54 -08:00
Brad FitzpatrickandBrad Fitzpatrick 74ed589042 syncs: add means of declare locking assumptions for debug mode validation
Updates #17852

Change-Id: I42a64a990dcc8f708fa23a516a40731a19967aba
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-11-26 13:04:28 -08:00
8af7778ce0 util/execqueue: don't hold mutex in RunSync
We don't hold q.mu while running normal ExecQueue.Add funcs, so we
shouldn't in RunSync either. Otherwise code it calls can't shut down
the queue, as seen in #18502.

Updates #18052

Co-authored-by: Nick Khyl <nickk@tailscale.com>
Change-Id: Ic5e53440411eca5e9fabac7f4a68a9f6ef026de1
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-11-26 10:09:23 -08:00
Brad FitzpatrickandBrad Fitzpatrick ac0b15356d tailcfg, control/controlclient: start moving MapResponse.DefaultAutoUpdate to a nodeattr
And fix up the TestAutoUpdateDefaults integration tests as they
weren't testing reality: the DefaultAutoUpdate is supposed to only be
relevant on the first MapResponse in the stream, but the tests weren't
testing that. They were instead injecting a 2nd+ MapResponse.

This changes the test control server to add a hook to modify the first
map response, and then makes the test control when the node goes up
and down to make new map responses.

Also, the test now runs on macOS where the auto-update feature being
disabled would've previously t.Skipped the whole test.

Updates #11502

Change-Id: If2319bd1f71e108b57d79fe500b2acedbc76e1a6
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-11-25 10:45:34 -08:00
Brad FitzpatrickandBrad Fitzpatrick 7d19813618 net/batching: fix import formatting
From #17842

Updates #cleanup

Change-Id: Ie041b50659361b50558d5ec1f557688d09935f7c
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-11-19 18:13:46 -08:00
Brad FitzpatrickandBrad Fitzpatrick 6ac4356bce util/eventbus: simplify some reflect in Bus.pump
Updates #cleanup

Change-Id: Ib7b497e22c6cdd80578c69cf728d45754e6f909e
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-11-19 06:23:34 -08:00
Brad FitzpatrickandBrad Fitzpatrick 408336a089 feature/featuretags: add CacheNetMap feature tag for upcoming work
(trying to get in smaller obvious chunks ahead of later PRs to make
them smaller)

Updates #17925

Change-Id: I184002001055790484e4792af8ffe2a9a2465b2e
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-11-18 18:11:20 -08:00
Brad FitzpatrickandBrad Fitzpatrick 5b0c57f497 tailcfg: add some omitzero, adjust some omitempty to omitzero
Updates tailscale/corp#25406

Change-Id: I7832dbe3dce3774bcc831e3111feb75bcc9e021d
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-11-18 17:36:27 -08:00
Brad FitzpatrickandBrad Fitzpatrick bd29b189fe types/netmap,*: remove some redundant fields from NetMap
Updates #12639

Change-Id: Ia50b15529bd1c002cdd2c937cdfbe69c06fa2dc8
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-11-18 07:56:10 -08:00
Brad FitzpatrickandBrad Fitzpatrick 2a6cbb70d9 .github/workflows: make go_generate check detect new files
Updates #17957

Change-Id: I904fd5b544ac3090b58c678c4726e7ace41a52dd
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-11-18 06:42:08 -08:00
Brad FitzpatrickandBrad Fitzpatrick 4e2f2d1088 feature/buildfeatures: re-run go generate
6a73c0bdf5 added a feature tag but didn't re-run go generate on ./feature/buildfeatures.

Updates #9192

Change-Id: I7819450453e6b34c60cad29d2273e3e118291643
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-11-18 06:42:08 -08:00
Brad FitzpatrickandBrad Fitzpatrick f1cddc6ecf ipn{,/local},cmd/tailscale: add "sync" flag and pref to disable control map poll
For manual (human) testing, this lets the user disable control plane
map polls with "tailscale set --sync=false" (which survives restarts)
and "tailscale set --sync" to restore.

A high severity health warning is shown while this is active.

Updates #12639
Updates #17945

Change-Id: I83668fa5de3b5e5e25444df0815ec2a859153a6d
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-11-17 12:37:31 -08:00
Brad FitzpatrickandBrad Fitzpatrick 165a24744e tka: fix typo in comment
Let's fix all the typos, which lets the code be more readable, lest we
confuse our readers.

Updates #cleanup

Change-Id: I4954601b0592b1fda40269009647bb517a4457be
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-11-17 10:13:24 -08:00
Brad FitzpatrickandBrad Fitzpatrick 1e95bfa184 ipn: fix typo in comment
Updates #cleanup

Change-Id: Iec66518abd656c64943a58eb6d92f342e627a613
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-11-17 08:40:07 -08:00
Brad FitzpatrickandBrad Fitzpatrick a5b2f18567 control/controlclient: remove some public API, move to Options & test-only
Includes adding StartPaused, which will be used in a future change to
enable netmap caching testing.

Updates #12639

Change-Id: Iec39915d33b8d75e9b8315b281b1af2f5d13a44a
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-11-17 07:52:59 -08:00
Brad FitzpatrickandBrad Fitzpatrick 99b06eac49 syncs: add Mutex/RWMutex alias/wrappers for future mutex debugging
Updates #17852

Change-Id: I477340fb8e40686870e981ade11cd61597c34a20
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-11-16 19:13:59 -08:00
Brad FitzpatrickandBrad Fitzpatrick 653d0738f9 types/netmap: remove PrivateKey from NetworkMap
It's an unnecessary nuisance having it. We go out of our way to redact
it in so many places when we don't even need it there anyway.

Updates #12639

Change-Id: I5fc72e19e9cf36caeb42cf80ba430873f67167c3
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-11-16 15:32:51 -08:00
Brad FitzpatrickandBrad Fitzpatrick 98aadbaf54 util/cache: remove unused code
Updates #cleanup

Change-Id: I9be7029c5d2a7d6297125d0147e93205a7c68989
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-11-15 12:52:45 -08:00
Brad FitzpatrickandBrad Fitzpatrick 4e01e8a66e wgengine/netlog: fix send to closed channel in test
Fixes #17922

Change-Id: I2cd600b0ecda389079f2004985ac9a25ffbbfdd1
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-11-15 10:20:17 -08:00
Brad FitzpatrickandBrad Fitzpatrick ce10f7c14c wgengine/wgcfg/nmcfg: reduce wireguard reconfig log spam
On the corp tailnet (using Mullvad exit nodes + bunch of expired
devices + subnet routers), these were generating big ~35 KB blobs of
logging regularly.

This logging shouldn't even exist at this level, and should be rate
limited at a higher level, but for now as a bandaid, make it less
spammy.

Updates #cleanup

Change-Id: I0b5e9e6e859f13df5f982cd71cd5af85b73f0c0a
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-11-14 11:13:49 -08:00
Brad FitzpatrickandBrad Fitzpatrick 052602752f control/controlclient: make Observer optional
As a baby step towards eventbus-ifying controlclient, make the
Observer optional.

This also means callers that don't care (like this network lock test,
and some tests in other repos) can omit it, rather than passing in a
no-op one.

Updates #12639

Change-Id: Ibd776b45b4425c08db19405bc3172b238e87da4e
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-11-14 10:40:41 -08:00