Commit Graph

5783 Commits

Author SHA1 Message Date
Dmytro Shynkevych
154d1cde05
router: reload systemd-resolved after changing /etc/resolv.conf (#619)
Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>
2020-07-29 20:57:25 -04:00
Brad Fitzpatrick
cbf71d5eba ipn/ipnserver: fix bug in earlier commit where conn can be stranded
If a connection causes getEngine to transition from broken to fixed,
that connection was getting lost.
2020-07-29 17:46:58 -07:00
Brad Fitzpatrick
b3fc61b132 wgengine: disable wireguard config trimming for now except iOS w/ many peers
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2020-07-29 16:29:30 -07:00
Brad Fitzpatrick
9ff5b380cb ipn/ipnserver: staticcheck is not wrong
shamecube.gif
2020-07-29 15:15:05 -07:00
Brad Fitzpatrick
4aba86cc03 ipn/ipnserver: make Engine argument a func that tries again for each connection
So a backend in server-an-error state (as used by Windows) can try to
create a new Engine again each time somebody re-connects, relaunching
the GUI app.

(The proper fix is actually fixing Windows issues, but this makes things better
in the short term)

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2020-07-29 14:33:33 -07:00
Brad Fitzpatrick
d55fdd4669 wgengine/magicsock: update, flesh out a TODO 2020-07-29 12:59:25 -07:00
Brad Fitzpatrick
d96d26c22a wgengine/filter: don't spam logs on dropped outgoing IPv6 ICMP or IPv4 IGMP
The OS (tries) to send these but we drop them. No need to worry the
user with spam that we're dropping it.

Fixes #402

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2020-07-29 08:32:55 -07:00
Dmytro Shynkevych
c7582dc234
ipn: fix netmap change tracking and dns map generation (#609)
Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>
2020-07-28 21:47:23 -04:00
Brad Fitzpatrick
3e3c24b8f6 wgengine/packet: add IPVersion field, don't use IPProto to note version
As prep for IPv6 log spam fixes in a future change.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2020-07-28 16:29:28 -07:00
Brad Fitzpatrick
91d95dafd2 control/controlclient: remove an 'unexpected' log that no longer is
Fixes #611
2020-07-28 15:13:34 -07:00
Brad Fitzpatrick
77cad13c70 portlist: avoid syscall audit violation logspam on Android
If we don't have access, don't try, don't log, don't continue trying.

Fixes #521
2020-07-28 13:21:42 -07:00
Brad Fitzpatrick
84f2320972 go.sum: update 2020-07-28 11:49:56 -07:00
David Anderson
f8e4c75f6b wgengine/magicsock: check slightly less aggressively for connectivity.
Signed-off-by: David Anderson <danderson@tailscale.com>
2020-07-28 17:04:48 +00:00
Brad Fitzpatrick
33a748bec1 net/interfaces: fix likelyHomeRouterIP on Android 2020-07-28 09:12:04 -07:00
Brad Fitzpatrick
b77d752623 control/controlclient: populate OSVersion on Windows 2020-07-27 21:46:07 -07:00
Brad Fitzpatrick
cd21ba0a71 tailcfg, control/controlclient: add GoArch, populate OSVersion on Linux 2020-07-27 21:14:28 -07:00
Brad Fitzpatrick
58b721f374 wgengine/magicsock: deflake some tests with an ugly hack
Starting with fe68841dc7, some e2e tests
got flaky. Rather than debug them (they're gnarly), just revert to the old
behavior as far as those tests are concerned. The tests were somehow
using magicsock without a private key and expecting it to do ... something.

My goal with fe68841dc7 was to stop log spam
and unnecessary work I saw on the iOS app when when stopping the app.

Instead, only stop doing that work on any transition from
once-had-a-private-key to no-longer-have-a-private-key. That fixes
what I wanted to fix while still making the mysterious e2e tests
happy.
2020-07-27 16:32:35 -07:00
Brad Fitzpatrick
ec4feaf31c cmd/cloner, tailcfg: fix nil vs len 0 issues, add tests, use for Hostinfo
Also use go:generate and https://golang.org/s/generatedcode header style.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2020-07-27 14:11:41 -07:00
David Anderson
41d0c81859 wgengine/magicsock: make disco subtest name more precise.
Signed-off-by: David Anderson <danderson@tailscale.com>
2020-07-27 14:09:54 -07:00
David Anderson
9beea8b314 wgengine/magicsock: remove unnecessary use of context.
Signed-off-by: David Anderson <danderson@tailscale.com>
2020-07-27 14:09:54 -07:00
David Anderson
b62341d308 wgengine/magicsock: add docstring.
Signed-off-by: David Anderson <danderson@tailscale.com>
2020-07-27 14:09:54 -07:00
David Anderson
9265296b33 wgengine/magicsock: don't deadlock on shutdown if sending blocks.
Signed-off-by: David Anderson <danderson@tailscale.com>
2020-07-27 14:09:54 -07:00
David Anderson
0249236cc0 ipn/ipnstate: record assigned Tailscale IPs.
wgengine/magicsock: use ipnstate to find assigned Tailscale IPs.

Signed-off-by: David Anderson <danderson@tailscale.com>
2020-07-27 14:09:54 -07:00
David Anderson
c3958898f1 tstest/natlab: be a bit more lenient during test shutdown.
There is a race in natlab where we might start shutdown while natlab is still running
a goroutine or two to deliver packets. This adds a small grace period to try and receive
it before continuing shutdown.

Signed-off-by: David Anderson <danderson@tailscale.com>
2020-07-27 14:09:54 -07:00
David Anderson
7578c815be wgengine/magicsock: give pinger a more generous packet timeout.
The first packet to transit may take several seconds to do so, because
setup rates in wgengine may result in the initial WireGuard handshake
init to get dropped. So, we have to wait at least long enough for a
retransmit to correct the fault.

Signed-off-by: David Anderson <danderson@tailscale.com>
2020-07-27 14:09:54 -07:00
David Anderson
c3994fd77c derp: remove OnlyDisco option.
Active discovery lets us introspect the state of the network stack precisely
enough that it's unnecessary, and dropping the initial DERP packets greatly
slows down tests. Additionally, it's unrealistic since our production network
will never deliver _only_ discovery packets, it'll be all or nothing.

Signed-off-by: David Anderson <danderson@tailscale.com>
2020-07-27 14:09:54 -07:00
David Anderson
5455c64f1d wgengine/magicsock: add a test for two facing endpoint-independent NATs.
Signed-off-by: David Anderson <danderson@tailscale.com>
2020-07-27 14:09:54 -07:00
David Anderson
f794493b4f wgengine/magicsock: explicitly check path discovery, add a firewall test.
The test proves that active discovery can traverse two facing firewalls.

Signed-off-by: David Anderson <danderson@tailscale.com>
2020-07-27 14:09:54 -07:00
David Anderson
f582eeabd1 wgengine/magicsock: add a test for active path discovery.
Uses natlab only, because the point of this active discovery test is going to be
that it should get through a lot of obstacles.

Signed-off-by: David Anderson <danderson@tailscale.com>
2020-07-27 14:09:54 -07:00
David Anderson
a2b4ad839b net/netcheck: lower the hairpin check timeout to 100ms.
This single check is the long pole for netcheck, and significantly slows down magicsock
tests.

Signed-off-by: David Anderson <danderson@tailscale.com>
2020-07-27 14:09:54 -07:00
David Anderson
25288567ec net/netcheck: centralize all clock values in one place.
This makes it easier to see how long a netcheck might take, and what
the slow bits might be.

Signed-off-by: David Anderson <danderson@tailscale.com>
2020-07-27 14:09:54 -07:00
David Anderson
5a370d545a tstest/natlab: drop packets that can't be routed in a LAN.
LANs are authoritative for their prefixes, so we should not bounce
packets back and forth to the default gateway in that case.

Signed-off-by: David Anderson <danderson@tailscale.com>
2020-07-27 14:09:54 -07:00
Brad Fitzpatrick
37903a9056 wgengine/magicsock: fix occasional deadlock on Conn.Close on c.derpStarted
The deadlock was:

* Conn.Close was called, which acquired c.mu
* Then this goroutine scheduled:

    if firstDerp {
        startGate = c.derpStarted
        go func() {
            dc.Connect(ctx)
            close(c.derpStarted)
        }()
    }

* The getRegion hook for that derphttp.Client then ran, which also
  tries to acquire c.mu.

This change makes that hook first see if we're already in a closing
state and then it can pretend that region doesn't exist.
2020-07-27 12:27:10 -07:00
Elias Naur
bca9fe35ba logtail: return correct write size from logger.Write
Signed-off-by: Elias Naur <mail@eliasnaur.com>
2020-07-27 11:06:41 -07:00
Brad Fitzpatrick
38b0c3eea2 version: new week, new version 2020-07-27 10:20:58 -07:00
Brad Fitzpatrick
43e2efe441 go mod tidy 2020-07-27 10:20:30 -07:00
Brad Fitzpatrick
fe68841dc7 wgengine/magicsock: log better with less spam on transition to stopped state
Required a minor test update too, which now needs a private key to get far
enough to test the thing being tested.
2020-07-27 10:19:17 -07:00
Brad Fitzpatrick
69f3ceeb7c derp/derphttp: don't return all nil from dialRegion when STUNOnly nodes 2020-07-27 10:10:10 -07:00
David Crawshaw
990e2f1ae9 tailcfg: generate some Clone methods
Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
2020-07-27 11:08:09 +10:00
David Crawshaw
961b9c8abf cmd/cloner: tool to generate Clone methods
Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
2020-07-27 11:08:09 +10:00
Brad Fitzpatrick
e298327ba8 wgengine/magicsock: remove overkill, slow reflect.DeepEqual of NetworkMap
No need to allocate or compare all the fields we don't care about.
2020-07-25 19:37:08 -07:00
Brad Fitzpatrick
be3ca5cbfd control/controlclient: remove unused, slow, often-not-what-you-want NetworkMap.Equal 2020-07-25 19:36:39 -07:00
Brad Fitzpatrick
4970e771ab wgengine: add debug knob to disable the watchdog during debugging
It launches goroutines and interferes with panic-based debugging,
obscuring stacks.
2020-07-25 12:59:53 -07:00
David Anderson
3669296cef wgengine/magicsock: refactor twoDevicePing to make stack construction cleaner.
Signed-off-by: David Anderson <danderson@tailscale.com>
2020-07-24 15:12:15 -07:00
Elias Naur
0a42b0a726 ipn: add OSVersion, DeviceModel fields to Prefs and propagate to Hostinfos
Needed for Android.

Signed-off-by: Elias Naur <mail@eliasnaur.com>
2020-07-24 14:12:29 -07:00
Brad Fitzpatrick
16a9cfe2f4 wgengine: configure wireguard peers lazily, as needed
wireguard-go uses 3 goroutines per peer (with reasonably large stacks
& buffers).

Rather than tell wireguard-go about all our peers, only tell it about
peers we're actively communicating with. That means we need hooks into
magicsock's packet receiving path and tstun's packet sending path to
lazily create a wireguard peer on demand from the network map.

This frees up lots of memory for iOS (where we have almost nothing
left for larger domains with many users).

We should ideally do this in wireguard-go itself one day, but that'd
be a pretty big change.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2020-07-24 12:50:15 -07:00
Brad Fitzpatrick
5066b824a6 wgengine/magicsock: don't log about disco ping timeouts if we have a working address
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2020-07-24 11:21:50 -07:00
Brad Fitzpatrick
648268192b go.mod: bump wireguard-go 2020-07-24 08:54:17 -07:00
Brad Fitzpatrick
a89d610a3d wgengine/tstun: move sync.Pool to package global
sync.Pools should almost always be packate globals, even though in this
case we only have exactly 1 TUN device anyway, so it matters less.
Still, it's unusual to see a Pool that's not a package global, so move it.
2020-07-24 08:29:36 -07:00
Dmytro Shynkevych
318751c486 cmd/tailscaled: always flush logs properly
Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>
2020-07-23 19:08:17 -04:00