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1305 Commits
Author SHA1 Message Date
David AndersonandDave Anderson 6ad44f9fdf wgengine: take in dns.Config, split out to resolver.Config and dns.OSConfig. 
Stepping stone towards having the DNS package handle the config splitting.

Signed-off-by: David Anderson <danderson@tailscale.com>
 2021-04-02 00:59:44 -07:00
David AndersonandDave Anderson 8af9d770cf net/dns: rename Config to OSConfig. 
Making way for a new higher level config struct.

Signed-off-by: David Anderson <danderson@tailscale.com>
 2021-04-02 00:59:44 -07:00
David Anderson fcfc0d3a08 net/dns: remove ManagerConfig, pass relevant args directly. 
Signed-off-by: David Anderson <danderson@tailscale.com>
 2021-04-01 23:26:52 -07:00
David Anderson f77ba75d6c wgengine/router: move DNS cleanup into the DNS package. 
Signed-off-by: David Anderson <danderson@tailscale.com>
 2021-04-01 22:35:34 -07:00
David Anderson 15875ccc63 wgengine/router: don't store unused tunname on windows. 2021-04-01 22:28:24 -07:00
Josh Bleecher SnyderandJosh Bleecher Snyder 34d4943357 all: gofmt -s 
The code is not obviously better or worse, but this makes the little warning
triangle in my editor go away, and the distraction removal is worth it.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
 2021-04-01 11:06:14 -07:00
Josh Bleecher SnyderandJosh Bleecher Snyder 1df162b05b wgengine/magicsock: adapt CreateEndpoint signature to match wireguard-go 
Part of a temporary change to make merging wireguard-go easier.
See https://github.com/tailscale/wireguard-go/pull/45.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
 2021-04-01 09:55:45 -07:00
Brad Fitzpatrick e64383a80e wgengine/router: document some fields a bit more 
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2021-04-01 07:50:50 -07:00
Denton GentryandDenton Gentry 35ab4020c7 wgengine/monitor: Linux fall back to polling 
Google Cloud Run does not implement NETLINK_ROUTE RTMGRP.
If initialization of the netlink socket or group membership
fails, fall back to a polling implementation.

Signed-off-by: Denton Gentry <dgentry@tailscale.com>
 2021-04-01 07:29:11 -07:00
David Anderson 90f82b6946 net/dns/resolver: add live reconfig, plumb through to ipnlocal. 
The resolver still only supports a single upstream config, and
ipn/wgengine still have to split up the DNS config, but this moves
closer to unifying the DNS configs.

As a handy side-effect of the refactor, IPv6 MagicDNS records exist
now.

Signed-off-by: David Anderson <danderson@tailscale.com>
 2021-04-01 01:44:03 -07:00
David Anderson f185d62dc8 net/dns/resolver: unexport Packet, only use it internally. 
Signed-off-by: David Anderson <danderson@tailscale.com>
 2021-03-31 23:12:31 -07:00
David Anderson 5fb9e00ecf net/dns/resolver: remove Start method, fully spin up in New instead. 
Signed-off-by: David Anderson <danderson@tailscale.com>
 2021-03-31 23:12:31 -07:00
David Anderson 075fb93e69 net/dns/resolver: remove the Config struct. 
In preparation for reintroducing a runtime reconfig Config struct.

Signed-off-by: David Anderson <danderson@tailscale.com>
 2021-03-31 23:12:31 -07:00
David Anderson bc81dd4690 net/dns/resolver: rename ResolverConfig to just Config. 
Signed-off-by: David Anderson <danderson@tailscale.com>
 2021-03-31 23:12:31 -07:00
David Anderson d99f5b1596 net/dns/resolver: factor the resolver out into a sub-package. 
Signed-off-by: David Anderson <danderson@tailscale.com>
 2021-03-31 23:12:30 -07:00
Naman SoodandGitHub 31c7745631 wgengine/netstack: stop re-adding IPs registered by active TCP connections (#1629) 
Signed-off-by: Naman Sood <mail@nsood.in>
 2021-03-31 15:32:33 -04:00
Brad Fitzpatrick 7f03c0f8fe wgengine/wgcfg/nmcfg: reduce some logging when a /0 route skipped 
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2021-03-31 09:51:55 -07:00
Josh Bleecher SnyderandJosh Bleecher Snyder 7b907615d5 wgengine/wgcfg/nmcfg: remove dead code 
The call to appendEndpoint updates cpeer.Endpoints.
Then it is overwritten in the next line.
The only errors from appendEndpoint occur when
the host/port pair is malformed, but that cannot happen.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
 2021-03-31 09:09:19 -07:00
Josh Bleecher SnyderandJosh Bleecher Snyder 36a85e1760 wgengine/magicsock: don't call t.Fatal in magicStack.IP 
It can end up executing an a new goroutine,
at which point instead of immediately stopping test execution, it hangs.
Since this is unexpected anyway, panic instead.
As a bonus, it makes call sites nicer and removes a kludge comment.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
 2021-03-30 11:48:13 -07:00
Brad Fitzpatrick 4c83bbf850 wgengine: add IsNetstack func and test 
So we have a documented & tested way to check whether we're in
netstack mode. To be used by future commits.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2021-03-30 09:53:12 -07:00
Brad Fitzpatrick 91bc723817 wgengine: add temp workaround for netstack WhoIs registration race 
Updates #1616

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2021-03-30 09:50:54 -07:00
Brad Fitzpatrick 41e4e02e57 net/{packet,tstun}: send peerapi port in TSMP pongs 
For discovery when an explicit hostname/IP is known. We'll still
also send it via control for finding peers by a list.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2021-03-29 15:18:23 -07:00
Naman SoodandGitHub 662fbd4a09 wgengine/netstack: Allow userspace networking mode to expose subnets (#1588) 
wgengine/netstack: Allow userspace networking mode to expose subnets

Updates #504

Updates #707

Signed-off-by: Naman Sood <mail@nsood.in>
 2021-03-29 14:33:05 -04:00
Brad FitzpatrickandBrad Fitzpatrick a4c679e646 wgengine/monitor: on wall time jump, synthesize network change event 
... to force rebinds of TCP connections

Fixes #1555
Updates tailscale/felicity#4

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2021-03-28 21:56:50 -07:00
David Anderson 07bf4eb685 wgengine: rename Fake to RespondToPing. 
"Fake" doesn't mean a lot any more, given that many components
of the engine can be faked out, including in valid production
configurations like userspace-networking.

Signed-off-by: David Anderson <danderson@tailscale.com>
 2021-03-28 21:45:02 -07:00
David Anderson 0fb738760f wgengine: make Tun optional again, default to fake. 
This makes setup more explicit in prod codepaths, without
requiring a bunch of arguments or helpers for tests and
userspace mode.

Signed-off-by: David Anderson <danderson@tailscale.com>
 2021-03-28 21:45:02 -07:00
Brad FitzpatrickandBrad Fitzpatrick e18c3a7d84 wgengine: optimize isLocalAddr a bit 
On macOS/iOS, this removes a map lookup per outgoing packet.

Noticed it while reading code, not from profiles, but can't hurt.

BenchmarkGenLocalAddrFunc
BenchmarkGenLocalAddrFunc/map1
BenchmarkGenLocalAddrFunc/map1-4                16184868                69.78 ns/op
BenchmarkGenLocalAddrFunc/map2
BenchmarkGenLocalAddrFunc/map2-4                16878140                70.73 ns/op
BenchmarkGenLocalAddrFunc/or1
BenchmarkGenLocalAddrFunc/or1-4                 623055721                1.950 ns/op
BenchmarkGenLocalAddrFunc/or2
BenchmarkGenLocalAddrFunc/or2-4                 472493098                2.589 ns/op

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2021-03-28 21:23:25 -07:00
David Anderson 93a4aa697c wgengine: default Router to a no-op router. 
Signed-off-by: David Anderson <danderson@tailscale.com>
 2021-03-28 18:59:48 -07:00
David Anderson 440effb21a wgengine: remove Config.TUN argument. 2021-03-28 18:45:17 -07:00
Josh Bleecher SnyderandJosh Bleecher Snyder 4954fbfda6 wgengine: extend TestWatchdog timeout on macOS 
This works around the close syscall being slow.
We can revert this if we find a fix or if Apple makes close fast again.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
 2021-03-27 09:27:11 -07:00
David Anderson 2df8adef9d wgengine: make the tun.Device required at construction. 
Signed-off-by: David Anderson <danderson@tailscale.com>
 2021-03-27 00:33:09 -07:00
David Anderson 016de16b2e net/tstun: rename TUN to Wrapper. 
The tstun packagen contains both constructors for generic tun
Devices, and a wrapper that provides additional functionality.

Signed-off-by: David Anderson <danderson@tailscale.com>
 2021-03-26 23:15:22 -07:00
David Anderson 82ab7972f4 net/tstun: rename NewFakeTUN to NewFake. 
Signed-off-by: David Anderson <danderson@tailscale.com>
 2021-03-26 22:46:47 -07:00
David AndersonandDave Anderson 588b70f468 net/tstun: merge in wgengine/tstun. 
Signed-off-by: David Anderson <danderson@tailscale.com>
 2021-03-26 22:31:54 -07:00
David AndersonandDave Anderson 2b4bfeda1a wgengine: pass in an explicit router.Router, rather than a generator. 
Signed-off-by: David Anderson <danderson@tailscale.com>
 2021-03-26 22:01:55 -07:00
David AndersonandDave Anderson 44d9929208 wgengine: remove Config.TUNName, require caller to create device. 
Also factors out device creation and associated OS workarounds to
net/tun.

Signed-off-by: David Anderson <danderson@tailscale.com>
 2021-03-26 21:08:11 -07:00
David AndersonandDave Anderson 0a84aaca0a wgengine/router: remove unused wireguard *Device argument. 
Signed-off-by: David Anderson <danderson@tailscale.com>
 2021-03-26 19:43:13 -07:00
Brad Fitzpatrick bcf571ec97 wgengine/monitor: fix OpenBSD build 
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2021-03-26 09:16:43 -07:00
Brad Fitzpatrick 7f174e84e6 net/interfaces: remove mutating methods, add EqualFiltered instead 
Now callers (wgengine/monitor) don't need to mutate the state to remove
boring interfaces before calling State.Equal. Instead, the methods
to remove boring interfaces from the State are removed, as is
the reflect-using Equal method itself, and in their place is
a new EqualFiltered method that takes a func predicate to match
interfaces to compare.

And then the FilterInteresting predicate is added for use
with EqualFiltered to do the job that that wgengine/monitor
previously wanted.

Now wgengine/monitor can keep the full interface state around,
including the "boring" interfaces, which we'll need for peerapi on
macOS/iOS to bind to the interface index of the utunN device.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2021-03-26 09:11:48 -07:00
David Anderson 672731ac6f many: gofmt. 
Signed-off-by: David Anderson <danderson@tailscale.com>
 2021-03-25 17:41:51 -07:00
David Anderson 6521f02ff6 Move DNS flush logic to net/dns. 
Signed-off-by: David Anderson <danderson@tailscale.com>
 2021-03-25 17:40:52 -07:00
David AndersonandDave Anderson 9f7f2af008 wgengine/router/dns: move to net/dns. 
Preparation for merging the APIs and whatnot.

Signed-off-by: David Anderson <danderson@tailscale.com>
 2021-03-25 16:25:30 -07:00
David AndersonandDave Anderson 8432999835 Move wgengine/tsdns to net/dns. 
Straight move+fixup, no other changes. In prep for merging with
wgengine/router/dns.

Signed-off-by: David Anderson <danderson@tailscale.com>
 2021-03-25 16:25:30 -07:00
Brad FitzpatrickandBrad Fitzpatrick 81143b6d9a ipn/ipnlocal: start of peerapi between nodes 
Also some necessary refactoring of the ipn/ipnstate too.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2021-03-25 16:00:35 -07:00
Josh Bleecher SnyderandJosh Bleecher Snyder 28af46fb3b wgengine: pass logger as a separate arg to device.NewDevice 
Adapt to minor API changes in wireguard-go.
And factor out device.DeviceOptions variables.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
 2021-03-24 10:39:58 -07:00
Brad FitzpatrickandBrad Fitzpatrick 2384c112c9 net/packet, wgengine/{filter,tstun}: add TSMP ping 
Fixes #1467

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2021-03-24 09:50:01 -07:00
Josh Bleecher SnyderandJosh Bleecher Snyder 4b77eca2de wgengine/magicsock: check returned error in addTestEndpoint 
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
 2021-03-24 09:46:36 -07:00
Brad FitzpatrickandBrad Fitzpatrick c99f260e40 wgengine/magicsock: prefer IPv6 transport if roughly equivalent latency 
Fixes #1566

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2021-03-23 17:34:01 -07:00
Brad FitzpatrickandBrad Fitzpatrick e2b3d9aa5f all: s/Magic DNS/MagicDNS/ for consistency 
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2021-03-23 14:25:28 -07:00
Brad Fitzpatrick 9643d8b34d wgengine/magicsock: add an addrLatency type to combine an IPPort+time.Duration 
Updates #1566 (but no behavior changes as of this change)

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2021-03-23 10:09:10 -07:00