2797 Commits (31ea073a7382fd3df64d0f448a9a4b1da0328d4e)

 

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Author	SHA1	Message	Date
Josh Bleecher Snyder	6f62bbae79	cmd/tailscale: make ping --until-direct require direct connection to exit 0 ... If --until-direct is set, the goal is to make a direct connection. If we failed at that, say so, and exit with an error. RELNOTE=tailscale ping --until-direct (the default) now exits with a non-zero exit code if no direct connection was established. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Avery Pennarun	6fd4e8d244	ipnlocal: fix switching users while logged in + Stopped. ... This code path is very tricky since it was originally designed for the "re-authenticate to refresh my keys" use case, which didn't want to lose the original session even if the refresh cycle failed. This is why it acts differently from the Logout(); Login(); case. Maybe that's too fancy, considering that it probably never quite worked at all, for switching between users without logging out first. But it works now. This was more invasive than I hoped, but the necessary fixes actually removed several other suspicious BUG: lines from state_test.go, so I'm pretty confident this is a significant net improvement. Fixes tailscale/corp#1756. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	4 years ago
Avery Pennarun	6307a9285d	controlclient: update Persist.LoginName when it changes. ... Well, that was anticlimactic. Fixes tailscale/corp#461. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	4 years ago
Avery Pennarun	285d0e3b4d	ipnlocal: fix deadlock in RequestEngineStatusAndWait() error path. ... If the engine was shutting down from a previous session (e.closing=true), it would return an error code when trying to get status. In that case, ipnlocal would never unblock any callers that were waiting on the status. Not sure if this ever happened in real life, but I accidentally triggered it while writing a test. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	4 years ago
Brad Fitzpatrick	5a7c6f1678	tstest/integration{,/testcontrol}: add node update support, two node test ... Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Brad Fitzpatrick	d32667011d	tstest/integration: build test binaries with -race if test itself is ... Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Brad Fitzpatrick	314d15b3fb	version: add func IsRace to report whether race detector enabled ... Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Brad Fitzpatrick	ed9d825552	tstest/integration: fix integration test on linux/386 ... Apparently can't use GOBIN with GOARCH. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Brad Fitzpatrick	c0158bcd0b	tstest/integration{,/testcontrol}: add testcontrol.RequireAuth mode, new test ... Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Josh Bleecher Snyder	ebcd7ab890	wgengine: remove wireguard-go DeviceOptions ... We no longer need them. This also removes the 32 bytes of prefix junk before endpoints. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	aacb2107ae	all: add extra information to serialized endpoints ... magicsock.Conn.ParseEndpoint requires a peer's public key, disco key, and legacy ip/ports in order to do its job. We currently accomplish that by: * adding the public key in our wireguard-go fork * encoding the disco key as magic hostname * using a bespoke comma-separated encoding It's a bit messy. Instead, switch to something simpler: use a json-encoded struct containing exactly the information we need, in the form we use it. Our wireguard-go fork still adds the public key to the address when it passes it to ParseEndpoint, but now the code compensating for that is just a couple of simple, well-commented lines. Once this commit is in, we can remove that part of the fork and remove the compensating code. Signed-off-by: Josh Bleecher Snyder <josharian@gmail.com>	4 years ago
Josh Bleecher Snyder	98cae48e70	wgengine/wglog: optimize wireguardGoString ... The new code is ugly, but much faster and leaner. name old time/op new time/op delta SetPeers-8 7.81µs ± 1% 3.59µs ± 1% -54.04% (p=0.000 n=9+10) name old alloc/op new alloc/op delta SetPeers-8 7.68kB ± 0% 2.53kB ± 0% -67.08% (p=0.000 n=10+10) name old allocs/op new allocs/op delta SetPeers-8 237 ± 0% 99 ± 0% -58.23% (p=0.000 n=10+10) Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	9356912053	wgengine/wglog: add BenchmarkSetPeer ... Because it showed up on hello profiles. Cycle through some moderate-sized sets of peers. This should cover the "small tweaks to netmap" and the "up/down cycle" cases. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Brad Fitzpatrick	36a26e6a71	internal/deephash: rename from deepprint ... Yes, it printed, but that was an implementation detail for hashing. And coming optimization will make it print even less. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Josh Bleecher Snyder	6ab2176dc7	internal/deepprint: improve benchmark ... This more closely matches our real usage of deepprint. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	712774a697	internal/deepprint: close struct curly parens ... Not that it matters, but we were missing a close parens. It's cheap, so add it. name old time/op new time/op delta Hash-8 6.64µs ± 0% 6.67µs ± 1% +0.42% (p=0.008 n=9+10) name old alloc/op new alloc/op delta Hash-8 1.54kB ± 0% 1.54kB ± 0% ~ (all equal) name old allocs/op new allocs/op delta Hash-8 37.0 ± 0% 37.0 ± 0% ~ (all equal) Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	8368bac847	internal/deepprint: stop printing struct field names ... The struct field names don't change within a single run, so they are irrelevant. Use the field index instead. name old time/op new time/op delta Hash-8 6.52µs ± 0% 6.64µs ± 0% +1.91% (p=0.000 n=6+9) name old alloc/op new alloc/op delta Hash-8 1.67kB ± 0% 1.54kB ± 0% -7.66% (p=0.000 n=10+10) name old allocs/op new allocs/op delta Hash-8 53.0 ± 0% 37.0 ± 0% -30.19% (p=0.000 n=10+10) Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	dfa0c90955	internal/deepprint: replace Fprintf(w, const) with w.WriteString ... name old time/op new time/op delta Hash-8 7.77µs ± 0% 6.29µs ± 1% -19.11% (p=0.000 n=9+10) name old alloc/op new alloc/op delta Hash-8 1.67kB ± 0% 1.67kB ± 0% ~ (all equal) name old allocs/op new allocs/op delta Hash-8 53.0 ± 0% 53.0 ± 0% ~ (all equal) Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	d4f805339e	internal/deepprint: special-case some common types ... These show up a lot in our data structures. name old time/op new time/op delta Hash-8 11.5µs ± 1% 7.8µs ± 1% -32.17% (p=0.000 n=10+10) name old alloc/op new alloc/op delta Hash-8 1.98kB ± 0% 1.67kB ± 0% -15.73% (p=0.000 n=10+10) name old allocs/op new allocs/op delta Hash-8 82.0 ± 0% 53.0 ± 0% -35.37% (p=0.000 n=10+10) Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	752f8c0f2f	internal/deepprint: buffer writes ... The sha256 hash writer doesn't implement WriteString. (See https://github.com/golang/go/issues/38776.) As a consequence, we end up converting many strings to []byte. Wrapping a bufio.Writer around the hash writer lets us avoid these conversions by using WriteString. Using a bufio.Writer is, perhaps surprisingly, almost as cheap as using unsafe. The reason is that the sha256 writer does internal buffering, but doesn't do any when handed larger writers. Using a bufio.Writer merely shifts the data copying from one buffer to a different one. Using a concrete type for Print and print cuts 10% off of the execution time. name old time/op new time/op delta Hash-8 15.3µs ± 0% 11.5µs ± 0% -24.84% (p=0.000 n=10+10) name old alloc/op new alloc/op delta Hash-8 2.82kB ± 0% 1.98kB ± 0% -29.57% (p=0.000 n=10+10) name old allocs/op new allocs/op delta Hash-8 140 ± 0% 82 ± 0% -41.43% (p=0.000 n=10+10) Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	7891b34266	internal/deepprint: add BenchmarkHash ... deepprint currently accounts for 15% of allocs in tailscaled. This is a useful benchmark to have. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	cb97062bac	go.mod: bump inet.af/netaddr ... For IPPort.MarshalText optimizations. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	773fcfd007	Revert "wgengine/bench: skip flaky test" ... This reverts commit d707e2f7e5. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	68911f6778	wgengine/bench: ignore "engine closing" errors ... On benchmark completion, we shut down the wgengine. If we happen to poll for status during shutdown, we get an "engine closing" error. It doesn't hurt anything; ignore it. Fixes tailscale/corp#1776 Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Brad Fitzpatrick	d707e2f7e5	wgengine/bench: skip flaky test ... Updates tailscale/corp#1776 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
David Anderson	cfde997699	net/dns: don't use interfaces.Tailscale to find the tailscale interface index. ... interfaces.Tailscale only returns an interface if it has at least one Tailscale IP assigned to it. In the resolved DNS manager, when we're called upon to tear down DNS config, the interface no longer has IPs. Instead, look up the interface index on construction and reuse it throughout the daemon lifecycle. Fixes #1892. Signed-off-by: David Anderson <dave@natulte.net>	4 years ago
Brad Fitzpatrick	d82b28ba73	go.mod: bump wireguard-go	4 years ago
Brad Fitzpatrick	366b3d3f62	ipn{,/ipnserver}: delay JSON marshaling of ipn.Notifies ... If nobody is connected to the IPN bus, don't burn CPU & waste allocations (causing more GC) by encoding netmaps for nobody. This will notably help hello.ipn.dev. Updates tailscale/corp#1773 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
David Anderson	dc32b4695c	util/dnsname: normalize leading dots in ToFQDN. ... Fixes #1888. Signed-off-by: David Anderson <dave@natulte.net>	4 years ago
Josh Bleecher Snyder	c0a70f3a06	go.mod: pull in wintun alignment fix from upstream wireguard-go ... 6cd106ab13...030c638da3 Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Maisem Ali	7027fa06c3	wf: implement windows firewall using inet.af/wf. ... Signed-off-by: Maisem Ali <maisem@tailscale.com>	4 years ago
Josh Bleecher Snyder	8d2a90529e	wgengine/bench: hold lock in TrafficGen.GotPacket while calling first packet callback ... Without any synchronization here, the "first packet" callback can be delayed indefinitely, while other work continues. Since the callback starts the benchmark timer, this could skew results. Worse, if the benchmark manages to complete before the benchmark timer begins, it'll cause a data race with the benchmark shutdown performed by package testing. That is what is reported in #1881. This is a bit unfortunate, in that it means that users of TrafficGen have to be careful to keep this callback speedy and lightweight and to avoid deadlocks. Fixes #1881 Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	a72fb7ac0b	wgengine/bench: handle multiple Engine status callbacks ... It is possible to get multiple status callbacks from an Engine. We need to wait for at least one from each Engine. Without limiting to one per Engine, wait.Wait can exit early or can panic due to a negative counter. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	6618e82ba2	wgengine/bench: close Engines on benchmark completion ... This reduces the speed with which these benchmarks exhaust their supply fds. Not to zero unfortunately, but it's still helpful when doing long runs. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	e9066ee625	types/wgkey: optimize Key.ShortString ... name old time/op new time/op delta ShortString-8 82.6ns ± 0% 15.6ns ± 0% -81.07% (p=0.008 n=5+5) name old alloc/op new alloc/op delta ShortString-8 104B ± 0% 8B ± 0% -92.31% (p=0.008 n=5+5) name old allocs/op new allocs/op delta ShortString-8 3.00 ± 0% 1.00 ± 0% -66.67% (p=0.008 n=5+5) Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	7cd4766d5e	types/wgkey: add BenchmarkShortString ... Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Brad Fitzpatrick	3173c5a65c	net/interface: remove darwin fetchRoutingTable workaround ... Fixed upstream. Bump dep. Updates #1345 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Josh Bleecher Snyder	ceb568202b	tailcfg: optimize keyMarshalText ... This function accounted for ~1% of all allocs by tailscaled. It is trivial to improve, so may as well. name old time/op new time/op delta KeyMarshalText-8 197ns ± 0% 47ns ± 0% -76.12% (p=0.016 n=4+5) name old alloc/op new alloc/op delta KeyMarshalText-8 200B ± 0% 80B ± 0% -60.00% (p=0.008 n=5+5) name old allocs/op new allocs/op delta KeyMarshalText-8 5.00 ± 0% 1.00 ± 0% -80.00% (p=0.008 n=5+5) Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Brad Fitzpatrick	5190435d6e	cmd/tailscale: rewrite the "up" checker, fix bugs ... The old way was way too fragile and had felt like it had more special cases than normal cases. (see #1874, #1860, #1834, etc) It became very obvious the old algorithm didn't work when we made the output be pretty and try to show the user the command they need to run in 5ecc7c7200 for #1746) The new algorithm is to map the prefs (current and new) back to flags and then compare flags. This nicely handles the OS-specific flags and the n:1 and 1:n flag:pref cases. No change in the existing already-massive test suite, except some ordering differences (the missing items are now sorted), but some new tests are added for behavior that was broken before. In particular, it now: * preserves non-pref boolean flags set to false, and preserves exit node IPs (mapping them back from the ExitNodeID pref, as well as ExitNodeIP), * doesn't ignore --advertise-exit-node when doing an EditPrefs call (#1880) * doesn't lose the --operator on the non-EditPrefs paths (e.g. with --force-reauth, or when the backend was not in state Running). Fixes #1880 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Brad Fitzpatrick	e72ed3fcc2	ipn/{ipnlocal,ipnstate}: add PeerStatus.ID stable ID to status --json output ... Needed for the "up checker" to map back from exit node stable IDs (the ipn.Prefs.ExitNodeID) back to an IP address in error messages. But also previously requested so people can use it to then make API calls. The upcoming "tailscale admin" subcommand will probably need it too. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
David Anderson	3c8e230ee1	Revert "net/dns: set IPv4 auto mode in NM, so it lets us set DNS." ... This reverts commit 7d16c8228b. I have no idea how I ended up here. The bug I was fixing with this change fails to reproduce on Ubuntu 18.04 now, and this change definitely does break 20.04, 20.10, and Debian Buster. So, until we can reliably reproduce the problem this was meant to fix, reverting. Part of #1875 Signed-off-by: David Anderson <dave@natulte.net>	4 years ago
David Anderson	a3b15bdf7e	.github: remove verbose issue templates, add triage label. ... Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	5bd38b10b4	net/dns: log the correct error when NM Reapply fails. ... Found while debugging #1870. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	7d16c8228b	net/dns: set IPv4 auto mode in NM, so it lets us set DNS. ... Part of #1870. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	77e2375501	net/dns: don't try to configure LLMNR or mdns in NetworkManager. ... Fixes #1870. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
Brad Fitzpatrick	e78e26b6fb	cmd/tailscale: fix another up warning with exit nodes ... The --advertise-routes and --advertise-exit-node flags both mutating one pref is the gift that keeps on giving. I need to rewrite the this up warning code to first map prefs back to flag values and then just compare flags instead of comparing prefs, but this is the minimal fix for now. This also includes work on the tests, to make them easier to write (and more accurate), by letting you write the flag args directly and have that parse into the upArgs/MaskedPrefs directly, the same as the code, rather than them being possibly out of sync being written by hand. Fixes https://twitter.com/EXPbits/status/1390418145047887877 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Josh Bleecher Snyder	ddd85b9d91	wgengine/magicsock: rename discoEndpoint.wgEndpointHostPort to wgEndpoint ... Fields rename only. Part of the general effort to make our code agnostic about endpoint formatting. It's just a name, but it will soon be a misleading one; be more generic. Do this as a separate commit because it generates a lot of whitespace changes. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	e0bd3cc70c	wgengine/magicsock: use netaddr.MustParseIPPrefix ... Delete our bespoke helper. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	bc68e22c5b	all: s/CreateEndpoint/ParseEndpoint/ in docs ... Upstream wireguard-go renamed the interface method from CreateEndpoint to ParseEndpoint. I missed some comments. Fix them. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	9bce1b7fc1	wgengine/wgcfg: make device test endpoint-format-agnostic ... By using conn.NewDefaultBind, this test requires that our endpoints be comprehensible to wireguard-go. Instead, use a no-op bind that treats endpoints as opaque strings. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago