3046 Commits (93c2882a2fe9b8058440bad60943ac2ad7a97ef2)

 

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Author	SHA1	Message	Date
Denton Gentry	93c2882a2f	wgengine: flush DNS cache after major link change. ... Windows has a public dns.Flush used in router_windows.go. However that won't work for platforms like Linux, where we need a different flush mechanism for resolved versus other implementations. We're instead adding a FlushCaches method to the dns Manager, which can be made to work on all platforms as needed. Fixes https://github.com/tailscale/tailscale/issues/2132 Signed-off-by: Denton Gentry <dgentry@tailscale.com>	3 years ago
Denton Gentry	280c84e46a	ipn/ipnserver, paths, logpolicy: move Window config files out of %LocalAppData% ... C:\WINDOWS\system32\config\systemprofile\AppData\Local\ is frequently cleared for almost any reason: Windows updates, System Restore, even various System Cleaner utilities. The server-state.conf file in AppData\Local could be deleted at any time, which would break login until the node is removed from the Admin Panel allowing it to create a new key. Carefully copy any AppData state to ProgramData at startup. If copying the state fails, continue to use AppData so at least there will be connectivity. If there is no state, use ProgramData. We also migrate the log.conf file. Very old versions of Tailscale named the EXE tailscale-ipn, so the log conf was tailscale-ipn.log.conf and more recent versions preserved this filename and cmdName in logs. In this migration we always update the filename to c:\ProgramData\Tailscale\tailscaled.log.conf Updates https://github.com/tailscale/tailscale/issues/2856 Signed-off-by: Denton Gentry <dgentry@tailscale.com>	3 years ago
Brad Fitzpatrick	aae622314e	tailcfg, health: add way for control plane to add problems to health check ... So if the control plane knows that something's broken about the node, it can include problem(s) in MapResponse and "tailscale status" will show it. (and GUIs in the future, as it's in ipnstate.Status/JSON) This also bumps the MapRequest.Version, though it's not strictly required. Doesn't hurt. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Josh Bleecher Snyder	b14db5d943	util/codegen: reorder AssertStructUnchanged args ... The fully qualified name of the type is thisPkg.tname, so write the args like that too. Suggested-by: Joe Tsai <joetsai@digital-static.net> Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	3cd85c0ca6	util/codegen: add ContainsPointers ... And use it in cmd/cloner. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	d5a0a4297e	cmd/cloner: unify switch cases ... And in the process, fix a bug: The fmt formatting was being applied by writef, not fmt.Sprintf, thus emitting a MISSING string. And there's no guarantee that fmt will be imported in the generated code. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	d8a8f70000	util/codegen: add NamedTypes ... And use it in cmd/cloner. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	367a973dc2	cmd/cloner: delete some debug code ... Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	081be3e96b	cmd/cloner: simplify code ... Change from a single-case type switch to a type assertion with an early return. That exposes that the name arg to gen is unneeded. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	d5ab18b2e6	cmd/cloner: add Clone context to regen struct assignments ... Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	618376dbc0	util/codegen: add AssertStructUnchanged ... Refactored out from cmd/cloner. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	fb66ff7c78	util/codegen: add package ... This is a package for shared utilities used in doing codegen programs. The inaugural API is for writing gofmt'd code to a file. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Adrian Dewhurst	4da559d7cc	control/controlclient: update machine certificate signature version ... This iterates on the original signature format. Signed-off-by: Adrian Dewhurst <adrian@tailscale.com>	3 years ago
Josh Bleecher Snyder	a722e48cef	wgengine/magicsock: skip alloc test with -race ... Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	07c09f470d	ipn/ipnlocal: do not shut down the backend halfway through TestStateMachine ... LocalBackend.Shutdown's docs say: > The backend can no longer be used after Shutdown returns. Nevertheless, TestStateMachine blithely calls Shutdown, talks some smack, and continues on, expecting things to work. Other uses of Shutdown in the codebase are as intended. Things mostly kinda work anyway, except that the wgengine.Engine has been shut down, so calls to Reconfig fail. Those get logged: > local.go:603: wgengine status error: engine closing; no status but otherwise ignored. However, the Reconfig failure caused one fewer call to pause/unpause than normal. Now the assertCalls lines match the equivalent ones earlier in the test. I don't see an obvious correct replacement for Shutdown in the context of this test; I'm not sure entirely what it is trying to accomplish. It is possible that many of the tests remaining after the prior call to Shutdown are now extraneous. They don't harm anything, though, so err on the side of safety and leave them for now. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	f834a4ade5	ipn/ipnlocal: fix minor typo in comment ... Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	221cc5f8f2	ipn/ipnlocal: reduce line noise in tests ... Use helpers and variadic functions to make the call sites a lot easier to read, since they occur a lot. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	45d3174c0d	ipn/ipnlocal: add LocalBackend.broadcastStatusChanged ... To reduce repetition. Also, document why we acquire the lock. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	b7ede14396	Revert "ipn/ipnlocal: remove locks around sync.Cond.Broadcast call" ... Reason for revert: Causes ipnlocal tests to deadlock intermittently. This reverts commit 1b15349e01. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Brad Fitzpatrick	a05086ef86	portlist: add debug knob to disable portlist collection ... For big servers. Per discussion with @crawshaw. Updates tailscale/corp#2566 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	4549d3151c	cmd/tailscale: make status show health check problems ... Fixes #2775 RELNOTE=tailscale status now shows health check problems Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	73f177e4d5	derp: throttle client sends if server advertises rate limits ... Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Maxim Merzhanov	d43fcd2f02	net/dns: fix error wrapping for SetLinkDefaultRoute in resolved ... Signed-off-by: Maxim Merzhanov <maksimmerzh@gmail.com>	3 years ago
Josh Bleecher Snyder	3ea8cf9c62	ipn/ipnlocal: use quicktest.IsNotNil in tests ... This didn't exist when the test was written. Now it does (frankban/quicktest#94); use it. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	1b15349e01	ipn/ipnlocal: remove locks around sync.Cond.Broadcast call ... They are unnecessary. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	3b58c118dd	ipn/ipnlocal: inline LocalBackend.getEngineStatus ... For uniformity. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	0f4c0e558b	ipn/ipnlocal: use a switch statement instead of an else-if chain ... For clarity. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	7421ba91ec	ipn/ipnlocal: only call UpdateEndpoints when the endpoints change ... Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	5b02ad16b9	control/controlclient: replace TODO with explanation ... Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	b681edc572	ipn/ipnlocal: add failing test ... Concurrent calls to LocalBackend.setWgengineStatus could result in some of the status updates being dropped. This was exacerbated by 92077ae78c, which increases the probability of concurrent status updates, causing test failures (tailscale/corp#2579). It's going to take a bit of work to fix this test. The ipnlocal state machine is difficult to reason about, particularly in the face of concurrency. We could fix the test trivially by throwing a new mutex around setWgengineStatus to serialize calls to it, but I'd like to at least try to do better than cosmetics. In the meantime, commit the test. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	7693d36aed	all: close fake userspace engines when tests complete ... We were leaking FDs. In a few places, switch from defer to t.Cleanup. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	008f36986e	.github/workflows: remove separate "build stringer" step ... We now use "go run" instead of compiling stringer separately. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	9faee90744	.github/workflows: skip net/dnsfallback go generate check on release branch ... We don't want to force ourselves to update the DERP list every time we want to cut a new release. Having an outdated DERP list on release branches is OK. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	4bbf5a8636	cmd/cloner: reduce diff noise when changing command ... Spelling out the command to run for every type means that changing the command makes for a large, repetitive diff. Stop doing that. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	865d8c0d23	cmd: upgrade to ffcli v3 ... None of the breaking changes from v2 to v3 are relevant to us. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	a3c5de641b	portlist: stop logging stray UDP ports ... These "weird" port lines show up in logs frequently. They're the result of uninteresting races, and they're not actionable. Remove the noise. Remove the isLoopbackAddr case to placate staticcheck. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Brad Fitzpatrick	a83f08c54b	cmd/tailscale: provide a better error message when tailscaled isn't running ... Fixes #2797 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	3e2a7de2e9	tailcfg: don't panic on clone of nil RegisterRequest ... Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	dabeda21e0	net/tstun: block looped disco traffic ... Updates #1526 (maybe fixes? time will tell) Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Josh Bleecher Snyder	3759fb8987	derp: deflake TestSendFreeze ... On about 1 out of 500 runs, TestSendFreeze failed: derp_test.go:416: bob: unexpected message type derp.PeerGoneMessage Closing alice before bob created a race. If bob closed promptly, the test passed. If bob closed slowly, and alice's disappearance caused bob to receive a PeerGoneMessage before closing, the test failed. Deflake the test by closing bob first. With this fix, the test passed 12,000 times locally. Fixes #2668 Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Brad Fitzpatrick	0be26599ca	cmd/derper: refactor STUN path for testing, add serverSTUN benchmark ... Real goal is to eliminate some allocs in the STUN path, but that requires work in the standard library. See comments in #2783. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	0eb6cc9321	portlist: cache field index position between runs, cut two more allocs (Linux) ... name old time/op new time/op delta ParsePorts-6 6.41ms ± 7% 3.15ms ± 2% -50.84% (p=0.000 n=9+9) name old alloc/op new alloc/op delta ParsePorts-6 408B ± 0% 216B ± 0% -47.06% (p=0.002 n=8+10) name old allocs/op new allocs/op delta ParsePorts-6 7.00 ± 0% 4.00 ± 0% -42.86% (p=0.000 n=10+10) Updates tailscale/corp#2566 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	61f201f33d	portlist: reuse bufio.Reader between files ... name old time/op new time/op delta ListPorts-6 1.18ms ± 5% 1.16ms ± 5% ~ (p=0.075 n=10+10) name old alloc/op new alloc/op delta ListPorts-6 27.2kB ± 0% 14.9kB ± 0% -45.14% (p=0.001 n=8+9) name old allocs/op new allocs/op delta ListPorts-6 90.0 ± 0% 84.0 ± 0% -6.67% (p=0.000 n=10+10) Updates tailscale/corp#2566 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	5a9d977c78	portlist: reduce CPU parsing portlist ... Avoid splitting fields in the common case. Field splitting was 84% of the overall CPU. name old time/op new time/op delta ParsePorts-6 33.3ms ± 2% 6.3ms ± 4% -80.97% (p=0.000 n=9+10) name old alloc/op new alloc/op delta ParsePorts-6 520B ±79% 408B ± 0% -21.49% (p=0.046 n=10+8) name old allocs/op new allocs/op delta ParsePorts-6 7.00 ± 0% 7.00 ± 0% ~ (all equal) Updates tailscale/corp#2566 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	64e9ce8df1	portlist: reduce allocs on Linux ... Notably, it no longer allocates proportional to the number of open sockets on the machine. Any alloc reduction numbers are a little contrived with such a reduction but e.g. on a machine with 50,000 connections open: name old time/op new time/op delta ParsePorts-6 57.7ms ± 6% 32.8ms ± 3% -43.04% (p=0.000 n=9+10) name old alloc/op new alloc/op delta ParsePorts-6 24.0MB ± 0% 0.0MB ± 0% -100.00% (p=0.000 n=10+9) name old allocs/op new allocs/op delta ParsePorts-6 100k ± 0% 0k ± 0% -99.99% (p=0.000 n=10+10) Updates tailscale/corp#2566 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	4f648e6fcc	cmd/tailscaled: disable netns earlier in userspace-networking mode ... The earlier 382b349c54 was too late, as engine creation itself needed to listen on things. Fixes #2827 Updates #2822 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	382b349c54	cmd/tailscaled: disable netns in userspace-networking mode ... Updates #2827 Updates #2822 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	31c1331415	wgengine/magicsock: deflake TestReceiveFromAllocs ... 100 iterations isn't enough with background allocs happening apparently. 1000 seems to be reliable. Fixes #2826 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	a353fbd3b4	tstest: make MemLogger.String acquire its mutex ... Updates #2781 (might even fix it, but its real issue is that SetPrivateKey starts a ReSTUN goroutines which then logs, and that bug and data race existed prior to MemLogger existing)	3 years ago
Brad Fitzpatrick	a76c8eea58	api: document new API to authorize a device (#2825) ... Fixes #2813 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago