Commit Graph

2607 Commits

Author SHA1 Message Date
Josh Bleecher Snyder
d5baeeed5c wgengine: use Tailscale-style peer identifiers in logs
Rewrite log lines on the fly, based on the set of known peers.

This enables us to use upstream wireguard-go logging,
but maintain the Tailscale-style peer public key identifiers
that the rest of our systems (and people) expect.

Fixes #1183

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-21 19:13:32 -08:00
Brad Fitzpatrick
4306433d1c cmd/tailscale: make "tailscale ping" also resolve names without DNS
This lets "tailscale ping $NAME" work even if MagicDNS is off, letting you
ping a name that shows up in "tailscale status".

More user friendly.
2021-01-21 15:45:36 -08:00
Brad Fitzpatrick
9541886856 wgengine/magicsock: disable regular STUNs for all platforms by default
Reduces background CPU & network.

Updates #1034

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-01-21 14:56:07 -08:00
David Anderson
49d00b6a28 tailcfg: add StableID to Node. #1178
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-01-21 13:33:19 -08:00
Brad Fitzpatrick
54d0d83b67 safesocket: on Linux, make /var/run/tailscale be 0755
Continuation of earlier two umask changes,
5611f290eb and
d6e9fb1df0.

This change mostly affects us, running tailscaled as root by hand (wit
a umask of 0077), not under systemd. End users running tailscaled
under systemd won't have a umask.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-01-21 13:23:14 -08:00
Steve Coffman
fec9490378 Add docker build script to inject version information
Signed-off-by: Steve Coffman <steve@khanacademy.org>
2021-01-21 12:42:53 -08:00
Brad Fitzpatrick
c55d26967b wgengine/magicsock: log more details of endpoints learned over disco
Also, don't try to use IPv6 LinkLocalUnicast addresses for now. Like endpoints
exchanged with control, we share them but don't yet use them.

Updates #1172
2021-01-21 08:06:14 -08:00
Brad Fitzpatrick
9f1b02699a tstime: add RandomDurationBetween helper
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-01-21 07:54:14 -08:00
Brad Fitzpatrick
a905ce5607 control/controlclient: add debug knob to not use control's endpoints 2021-01-20 21:31:06 -08:00
Brad Fitzpatrick
359055d3fa wgengine/magicsock: fix logging regression
c8c493f3d9 made it always say
`created=false` which scared me when I saw it, as that would've implied
things were broken much worse. Fortunately the logging was just wrong.
2021-01-20 20:48:02 -08:00
Brad Fitzpatrick
b5628cee4e control/controlclient: add detail to verbose log about route skips 2021-01-20 19:28:21 -08:00
Brad Fitzpatrick
edf64e0901 wgengine/magicsock: send, use endpoints in CallMeMaybe messages
Fixes #1172

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-01-20 14:59:41 -08:00
Brad Fitzpatrick
ec77b80c53 tailcfg, control/controlclient: add mapver 10: MapResponse.PeerSeenChange
This adds a more wire-efficient way of updating peers' Node.LastSeen times.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-01-20 13:20:21 -08:00
Brad Fitzpatrick
b5b4992eff disco: support parsing/encoding endpoints in call-me-maybe frames
Updates #1172

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-01-20 12:16:33 -08:00
Josh Bleecher Snyder
d3dd7c6270 wgengine/magicsock: make legacy DstToString match Addrs
DstToString is used in two places in wireguard-go: Logging and uapi.

We are switching to use uapi for wireguard-go config.
To preserve existing behavior, we need the full set of addrs.

And for logging, having the full set of addrs seems useful.

(The Addrs method itself is slated for removal. When that happens,
the implementation will move to DstToString.)


Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-20 10:31:51 -08:00
Brad Fitzpatrick
187e22a756 wgengine/magicsock: don't run the DERP cleanup so often
To save CPU and wakeups, don't run the DERP cleanup timer regularly
unless there is a non-home DERP connection open.

Also eliminates the goroutine, moving to a time.AfterFunc.

Updates #1034

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-01-19 18:14:25 -08:00
David Anderson
ab9cccb292 cmd/tailscale/cli: require v4 and v6 default routes to be advertised together.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-01-19 16:49:06 -08:00
David Anderson
78338ac029 types/logger: trim spaces from the rate-limited example message.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-01-19 16:48:44 -08:00
Brad Fitzpatrick
b405644f5d api.md: add TOC 2021-01-19 12:35:09 -08:00
Josh Bleecher Snyder
5fe5402fcd Revert "wgengine/magicsock: shortcircuit discoEndpoint.heartbeat when its connection is closed"
This reverts commit 08baa17d9a.
It caused deadlocks due to lock ordering violations.
It was not the right fix, and thus should simply be reverted
while we look for the right fix (if we haven't already found it
in the interim; we've fixed other logging-after-test issues).

Fixes #1161
2021-01-19 11:44:32 -08:00
Josh Bleecher Snyder
e4c075cd95 wgengine/magicsock: prevent log-after-test in TestTwoDevicePing 2021-01-19 11:04:17 -08:00
Brad Fitzpatrick
edce91a8a6 wgengine/magicsock: fix a naked return bug/crash where we returned (nil, true)
The 'ok' from 'ipp, ok :=' above was the result parameter ok. Whoops.
2021-01-19 10:57:40 -08:00
Brad Fitzpatrick
51bd1feae4 wgengine/magicsock: add single element IPPort->endpoint cache in receive path
name           old time/op  new time/op  delta
ReceiveFrom-4  21.8µs ± 2%  20.9µs ± 2%  -4.27%  (p=0.000 n=10+10)

Updates #414

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-01-18 21:40:58 -08:00
David Anderson
da4ec54756 tailcfg: remove v6-overlay debug option.
It's about to become a no-op in control.

Signed-off-by: David Anderson <danderson@tailscale.com>
2021-01-18 17:47:23 -08:00
Brad Fitzpatrick
5c619882bc wgengine/magicsock: simplify ReceiveIPv4+DERP path
name           old time/op  new time/op  delta
ReceiveFrom-4  35.8µs ± 3%  21.9µs ± 5%  -38.92%  (p=0.008 n=5+5)

Fixes #1145
Updates #414

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-01-18 15:23:17 -08:00
David Anderson
9936cffc1a wgengine: correctly track all node IPs in lazy config.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-01-18 13:32:16 -08:00
Brad Fitzpatrick
3fa86a8b23 wgengine/magicsock: use relatively new netaddr.IPPort.IsZero method 2021-01-15 19:21:10 -08:00
Brad Fitzpatrick
4811236189 wgengine/magicsock: speed up BenchmarkReceiveFrom, store context.Done chan
context.cancelCtx.Done involves a mutex and isn't as cheap as I
previously assumed. Convert the donec method into a struct field and
store the channel value once. Our one magicsock.Conn gets one pointer
larger, but it cuts ~1% of the CPU time of the ReceiveFrom benchmark
and removes a bubble from the --svg output :)
2021-01-15 19:19:27 -08:00
Brad Fitzpatrick
c78ed5b399 go.sum: update (forgotten after earlier wireguard-go update again) 2021-01-15 19:19:27 -08:00
Denton Gentry
013da6660e logtail: add tests
+ add a test for parseAndRemoveLogLevel()
+ add a test for drainPendingMessages()
+ test JSON log encoding including several special cases

Other tests frequently send logs but a) don't check the result and
b) do so by happenstance, such that the code in encode() was not
consistently being exercised and leading to spurious changes in
code coverage. These tests attempt to more systematically test
the logging function.

This is the second attempt to add these tests, the first attempt
(in https://github.com/tailscale/tailscale/pull/1114) had two issues:
1. httptest.NewServer creates multiple goroutine handlers, and
   logtail uses goroutines to upload, but the first version had no
   locking in the server to guard this.
   Moved data handling into channels to get synchronization.
2. The channel to notify the test of the arrival of data had a depth
   of 1, in cases where the Logger sent multiple uploads it would
   block the server.

This resulted in the first iteration of these tests being flaky,
and we reverted it.

This new version of the tests has passed with
    go test -race -count=10000
and seems solid.

Signed-off-by: Denton Gentry <dgentry@tailscale.com>
2021-01-15 19:11:40 -08:00
Denton Gentry
8578b0445d tstun: add test to send a packet after Close()
This test serves two purposes:
+ check that Write() returns an error if the tstun has been
  closed.
+ ensure that the close-related code in tstun is exercised in
  a test case. We were getting spurious code coverage adds/drops
  based on timing of when the test case finished.

Signed-off-by: Denton Gentry <dgentry@tailscale.com>
2021-01-15 19:11:40 -08:00
Josh Bleecher Snyder
7c1a9e8616 net/nettest: de-flake tests on Windows
Windows has a low resolution timer.
Some of the tests assumed that unblock takes effect immediately.

Consider:

t := time.Now()
elapsed := time.Now().After(t)

It seems plausible that elapsed should always be true.
However, with a low resolution timer, that might fail.

Change time.Now().After to !time.Now().Before,
so that unblocking always takes effect immediately.

Fixes #873.
2021-01-15 18:21:56 -08:00
Josh Bleecher Snyder
a64d06f15c net/nettest: remove pointless checks in tests
If err == nil, then !errors.Is(err, anything).
2021-01-15 18:21:56 -08:00
Josh Bleecher Snyder
503db5540f net/nettest: add missing check at end of TestLimit
This appears to have been an oversight.
2021-01-15 18:21:56 -08:00
Josh Bleecher Snyder
ed2169ae99 wgengine/magicsock: prevent logging after TestActiveDiscovery completes 2021-01-15 18:19:20 -08:00
Josh Bleecher Snyder
12bb949178 go.mod: bump to pull in minor wireguard-go changes 2021-01-15 17:35:03 -08:00
Josh Bleecher Snyder
63af950d8c wgengine/magicsock: adapt to wireguard-go without UpdateDst
22507adf54 stopped relying on
our fork of wireguard-go's UpdateDst callback.
As a result, we can unwind that code,
and the extra return value of ReceiveIPv{4,6}.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-15 17:13:58 -08:00
Denton Gentry
23c2dc2165
magicksock: remove TestConnClosing. (#1140)
Test is flakey, remove it and figure out what to do differently later.

Signed-off-by: Denton Gentry <dgentry@tailscale.com>
2021-01-15 16:55:30 -08:00
David Anderson
e23b4191c4 wgengine/magicsock: disable legacy networking everywhere except TwoDevicePing.
TwoDevicePing is explicitly testing the behavior of the legacy codepath, everything
else is happy to assume that code no longer exists.

Signed-off-by: David Anderson <danderson@tailscale.com>
2021-01-15 16:02:31 -08:00
David Anderson
0733c5d2e0 wgengine/magicsock: disable legacy behavior in a few more tests.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-01-15 15:57:41 -08:00
David Anderson
57d95dd005 wgengine/magicsock: default legacy networking to off for some tests.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-01-15 15:54:45 -08:00
David Anderson
a2463e8948 wgengine/magicsock: add an option to disable legacy peer handling.
Used in tests to ensure we're not relying on behavior we're going
to remove eventually.

Signed-off-by: David Anderson <danderson@tailscale.com>
2021-01-15 15:01:33 -08:00
David Anderson
d456bfdc6d wgengine/magicsock: fix BenchmarkReceiveFrom.
Previously, this benchmark relied on behavior of the legacy
receive codepath, which I changed in 22507adf. With this
change, the benchmark instead relies on the new active discovery
path.

Signed-off-by: David Anderson <danderson@tailscale.com>
2021-01-15 15:01:33 -08:00
Josh Bleecher Snyder
2d837f79dc wgengine/magicsock: close test loggers once we're done with them
This is a big hammer approach to helping with #1132.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-15 14:44:56 -08:00
Josh Bleecher Snyder
08baa17d9a wgengine/magicsock: shortcircuit discoEndpoint.heartbeat when its connection is closed
This prevents us from continuing to do unnecessary work
(including logging) after the connection has closed.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-15 14:44:56 -08:00
Josh Bleecher Snyder
7c76435bf7 wgengine/magicsock: simplify
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-15 14:44:56 -08:00
Josh Bleecher Snyder
d2529affa2 wgengine/magicsock: quiet wireguard-go logging in tests
We already do this in newUserspaceEngineAdvanced.
Apply it to newMagicStack as well.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-15 14:44:56 -08:00
Josh Bleecher Snyder
3ad7c2133a wgengine/userspace: make wireguard-go log silencing include peer routines
Also suppress log lines like:

peer(Kksd…ySmc) - Routine: sequential sender - stopped

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-15 14:44:56 -08:00
Brad Fitzpatrick
b560386c1a net/packet, wgengine, tstun: add inter-node TSMP protocol for connect errors
This adds a new IP Protocol type, TSMP on protocol number 99 for
sending inter-tailscale messages over WireGuard, currently just for
why a peer rejects TCP SYNs (ACL rejection, shields up, and in the
future: nothing listening, something listening on that port but wrong
interface, etc)

Updates #1094
Updates tailscale/corp#1185

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-01-15 14:03:57 -08:00
David Anderson
01e8b7fb7e go.mod: bump wireguard-go version.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-01-15 10:53:49 -08:00