Commit Graph

166 Commits

Author SHA1 Message Date
David Anderson
672731ac6f many: gofmt.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-03-25 17:41:51 -07:00
David 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
Josh 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 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
Brad Fitzpatrick
96dfeb2d7f wgengine: log tailscale pings
Fixes #1561

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-03-22 21:48:05 -07:00
Brad Fitzpatrick
85138d3183 health: track whether any network interface is up
Fixes #1562

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-03-22 21:42:14 -07:00
Brad Fitzpatrick
0994a9f7c4 wgengine{,/magicsock}: fix, improve "tailscale ping" to default routes and subnets
e.g.

$ tailscale ping 1.1.1.1
exit node found but not enabled

$ tailscale ping 10.2.200.2
node "tsbfvlan2" found, but not using its 10.2.200.0/24 route

$ sudo tailscale  up --accept-routes
$ tailscale ping 10.2.200.2
pong from tsbfvlan2 (100.124.196.94) via 10.2.200.34:41641 in 1ms

$ tailscale ping mon.ts.tailscale.com
pong from monitoring (100.88.178.64) via DERP(sfo) in 83ms
pong from monitoring (100.88.178.64) via DERP(sfo) in 21ms
pong from monitoring (100.88.178.64) via [2604:a880:4:d1::37:d001]:41641 in 22ms

This necessarily moves code up from magicsock to wgengine, so we can
look at the actual wireguard config.

Fixes #1564

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-03-22 21:29:44 -07:00
Brad Fitzpatrick
1eb95c7e32 net/packet, wgengine{,/filter}: remove net/packet IPProto forwarding consts
Only use the ones in types/ipproto now.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-03-20 21:45:47 -07:00
Naman Sood
770aa71ffb client, cmd/hello, ipn, wgengine: fix whois for netstack-forwarded connections
Updates #504

Updates #707

Signed-off-by: Naman Sood <mail@nsood.in>
2021-03-15 18:14:09 -04:00
Brad Fitzpatrick
44ab0acbdb net/portmapper, wgengine/monitor: cache gateway IP info until link changes
Cuts down allocs & CPU in steady state (on regular STUN probes) when network
is unchanging.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-03-15 14:27:39 -07:00
Brad Fitzpatrick
f9f3b67f3a wgengine{,tsdns}: rebind MagicDNS forwarders on link change
Fixes #1480

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-03-12 08:56:53 -08:00
Brad Fitzpatrick
ffa70a617d wgengine{,/monitor}: restore Engine.LinkChange, add Mon.InjectEvent
The Engine.LinkChange method was recently removed in
e3df29d488 while misremembering how
Android's link state mechanism worked.

Rather than do some last minute rearchitecting of link state on
Android before Tailscale 1.6, restore the old Engine.LinkChange hook
for now so the Android client doesn't need any changes. But change how
it's implemented to instead inject an event into the link monitor.

Fixes #1427

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-03-03 22:09:02 -08:00
Brad Fitzpatrick
487c520109 wgengine: fix bug from earlier commit
Commit e3df29d488 introduced this bug where the
interfaces-were-changed-or-not bit got lost.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-03-01 20:22:12 -08:00
Brad Fitzpatrick
e3df29d488 wgengine{,/monitor}: move interface state fetching/comparing to monitor
Gets it out of wgengine so the Engine isn't responsible for being a
callback registration hub for it.

This also removes the Engine.LinkChange method, as it's no longer
necessary.  The monitor tells us about changes; it doesn't seem to
need any help. (Currently it was only used by Swift, but as of
14dc790137 we just do the same from Go)

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-03-01 13:01:08 -08:00
Brad Fitzpatrick
38dc6fe758 cmd/tailscaled, wgengine: remove --fake, replace with netstack
And add a --socks5-server flag.

And fix a race in SOCKS5 replies where the response header was written
concurrently with the copy from the backend.

Co-authored with Naman Sood.

Updates #707
Updates #504

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-03-01 11:09:19 -08:00
Brad Fitzpatrick
34188d93d4 wgengine/monitor: start moving interface state accessor into monitor
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-03-01 07:56:06 -08:00
Brad Fitzpatrick
a55a03d5ff wgengine: let LinkMonitor be passed in to NewUserspaceEngine
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-02-27 21:55:06 -08:00
Brad Fitzpatrick
ee6475a44d wgengine: unify NewUserspaceEngine, NewUserspaceEngineAdvanced
Also rename EngineConfig to Config to avoid wgengine.EngineConfig
stutter.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-02-27 21:52:24 -08:00
Brad Fitzpatrick
dda03a911e wgengine/monitor: change API to permit multiple independent callbakcks
Currently it assumes exactly 1 registered callback. This changes it to
support 0, 1, or more than 1.

This is a step towards plumbing wgengine/monitor into more places (and
moving some of wgengine's interface state fetching into monitor in a
later step)

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-02-27 19:36:52 -08:00
Brad Fitzpatrick
0eea490724 wgengine: also close link monitor on NewUserspaceEngineAdvanced error
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-02-27 19:11:23 -08:00
Naman Sood
517c90d7e5
wgengine, cmd/tailscaled: refactor netstack, forward TCP to hello as demo (#1301)
Updates #707
Updates #504

Signed-off-by: Naman Sood <mail@nsood.in>
2021-02-25 14:18:16 -05:00
Aleksandar Pesic
daf6de4f14 wgengine: make NewUserspaceEngine wait for TUN interface to be up on Windows
Updates #474

Signed-off-by: Aleksandar Pesic <peske.nis@gmail.com>
2021-02-25 07:58:17 -08:00
Brad Fitzpatrick
188bb14269 wgengine: consistently close things when NewUserspaceEngineAdvanced errors
Fixes #1363

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-02-22 20:39:39 -08:00
Brad Fitzpatrick
fd8e070d01 health, control/controlclient, wgengine: report when router unhealthy
Updates tailscale/corp#1338

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-02-18 11:48:48 -08:00
Brad Fitzpatrick
bbb4631e04 safesocket, wgengine: add some darwin failure diagnostic hints 2021-02-15 08:40:52 -08:00
Josh Bleecher Snyder
e7caad61fb wgengine: remove IpcGetOperation filter
This was in place because retrieved allowed_ips was very expensive.
Upstream changed the data structure to make them cheaper to compute.

This commit is an experiment to find out whether they're now cheap enough.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-02-08 20:22:55 -08:00
Brad Fitzpatrick
1e7a35b225 types/netmap: split controlclient.NetworkMap off into its own leaf package
Updates #1278

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-02-05 16:18:52 -08:00
Josh Bleecher Snyder
aa6856a9eb wgengine: adapt to wireguard-go changes
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-02-04 15:15:33 -08:00
Brad Fitzpatrick
d76334d2f0 ipn: split LocalBackend off into new ipn/ipnlocal package
And move a couple other types down into leafier packages.

Now cmd/tailscale doesn't bring in netlink, magicsock, wgengine, etc.

Fixes #1181

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-02-04 14:04:23 -08:00
Josh Bleecher Snyder
fe7c3e9c17 all: move wgcfg from wireguard-go
This is mostly code movement from the wireguard-go repo.

Most of the new wgcfg package corresponds to the wireguard-go wgcfg package.

wgengine/wgcfg/device{_test}.go was device/config{_test}.go.
There were substantive but simple changes to device_test.go to remove
internal package device references.

The API of device.Config (now wgcfg.DeviceConfig) grew an error return;
we previously logged the error and threw it away.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-29 12:52:56 -08:00
Brad Fitzpatrick
4d943536f1 wgengine: don't leak TUN device in NewUserspaceEngine error path
Updates #1187

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-01-27 11:06:56 -08:00
Brad Fitzpatrick
9f5b0d058f wgengine: fix bugs from earlier fix
Fixes a regression from e970ed0995 that wasn't covered by tests
in this repo. (Our end-to-end tests in another repo caught this.)

Updates #1204
2021-01-27 10:32:08 -08:00
Brad Fitzpatrick
e970ed0995 wgengine: fix crash reading long UAPI lines from legacy peers
Also don't log.Fatalf in a function returning an error.

Fixes #1204

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-01-26 11:39:13 -08:00
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
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
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
Naman Sood
420c7a35e2
wgengine/netstack: use tailscale IPs instead of a hardcoded one (#1131)
Signed-off-by: Naman Sood <mail@nsood.in>
2021-01-15 09:16:28 -05:00
Josh Bleecher Snyder
654b5f1570 all: convert from []wgcfg.Endpoint to string
This eliminates a dependency on wgcfg.Endpoint,
as part of the effort to eliminate our wireguard-go fork.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-14 13:54:07 -08:00
Josh Bleecher Snyder
020084e84d wgengine: adapt to removal of wgcfg.Key in wireguard-go 2021-01-13 14:39:34 -08:00
Brad Fitzpatrick
85e54af0d7 wgengine: on TCP connect fail/timeout, log some clues about why it failed
So users can see why things aren't working.

A start. More diagnostics coming.

Updates #1094
2021-01-11 22:09:09 -08:00
Brad Fitzpatrick
5aa5db89d6 cmd/tailscaled, wgengine/netstack: add start of gvisor userspace netstack work
Not usefully functional yet (mostly a proof of concept), but getting
it submitted for some work @namansood is going to do atop this.

Updates #707
Updates #634
Updates #48
Updates #835
2021-01-11 09:31:14 -08:00
Josh Bleecher Snyder
1e4604f60e wgengine: quiet some wireguard-go logging
The log lines that wireguard-go prints as it starts
and stops its worker routines are mostly noise.
They also happen after other work is completed,
which causes failures in some of the log testing packages.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-08 17:10:48 -08:00
Josh Bleecher Snyder
56a7652dc9 wgkey: new package
This is a replacement for the key-related parts
of the wireguard-go wgcfg package.

This is almost a straight copy/paste from the wgcfg package.
I have slightly changed some of the exported functions and types
to avoid stutter, added and tweaked some comments,
and removed some now-unused code.

To avoid having wireguard-go depend on this new package,
wgcfg will keep its key types.

We translate into and out of those types at the last minute.
These few remaining uses will be eliminated alongside
the rest of the wgcfg package.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2020-12-30 17:33:02 -08:00
Josh Bleecher Snyder
2fe770ed72 all: replace wgcfg.IP and wgcfg.CIDR with netaddr types
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2020-12-28 13:00:42 -08:00
Brad Fitzpatrick
80c94168ae wgengine: finish updating isTrimmablePeer
I accidentally merged Dave's change with the XXXX DO NOT SUBMIT comment
in it.
2020-12-22 14:48:24 -08:00
David Anderson
cb96b14bf4 net/packet: remove the custom IP4/IP6 types in favor of netaddr.IP.
Upstream netaddr has a change that makes it alloc-free, so it's safe to
use in hot codepaths. This gets rid of one of the many IP types in our
codebase.

Performance is currently worse across the board. This is likely due in
part to netaddr.IP being a larger value type (4b -> 24b for IPv4,
16b -> 24b for IPv6), and in other part due to missing low-hanging fruit
optimizations in netaddr. However, the regression is less bad than
it looks at first glance, because we'd micro-optimized packet.IP* in
the past few weeks. This change drops us back to roughly where we
were at the 1.2 release, but with the benefit of a significant
code and architectural simplification.

name                   old time/op    new time/op    delta
pkg:tailscale.com/net/packet goos:linux goarch:amd64
Decode/tcp4-8            12.2ns ± 5%    29.7ns ± 2%  +142.32%  (p=0.008 n=5+5)
Decode/tcp6-8            12.6ns ± 3%    65.1ns ± 2%  +418.47%  (p=0.008 n=5+5)
Decode/udp4-8            11.8ns ± 3%    30.5ns ± 2%  +157.94%  (p=0.008 n=5+5)
Decode/udp6-8            27.1ns ± 1%    65.7ns ± 2%  +142.36%  (p=0.016 n=4+5)
Decode/icmp4-8           24.6ns ± 2%    30.5ns ± 2%   +23.65%  (p=0.016 n=4+5)
Decode/icmp6-8           22.9ns ±51%    65.5ns ± 2%  +186.19%  (p=0.008 n=5+5)
Decode/igmp-8            18.1ns ±44%    30.2ns ± 1%   +66.89%  (p=0.008 n=5+5)
Decode/unknown-8         20.8ns ± 1%    10.6ns ± 9%   -49.11%  (p=0.016 n=4+5)
pkg:tailscale.com/wgengine/filter goos:linux goarch:amd64
Filter/icmp4-8           30.5ns ± 1%    77.9ns ± 3%  +155.01%  (p=0.008 n=5+5)
Filter/tcp4_syn_in-8     43.7ns ± 3%   123.0ns ± 3%  +181.72%  (p=0.008 n=5+5)
Filter/tcp4_syn_out-8    24.5ns ± 2%    45.7ns ± 6%   +86.22%  (p=0.008 n=5+5)
Filter/udp4_in-8         64.8ns ± 1%   210.0ns ± 2%  +223.87%  (p=0.008 n=5+5)
Filter/udp4_out-8         119ns ± 0%     278ns ± 0%  +133.78%  (p=0.016 n=4+5)
Filter/icmp6-8           40.3ns ± 2%   204.4ns ± 4%  +407.70%  (p=0.008 n=5+5)
Filter/tcp6_syn_in-8     35.3ns ± 3%   199.2ns ± 2%  +464.95%  (p=0.008 n=5+5)
Filter/tcp6_syn_out-8    32.8ns ± 2%    81.0ns ± 2%  +147.10%  (p=0.008 n=5+5)
Filter/udp6_in-8          106ns ± 2%     290ns ± 2%  +174.48%  (p=0.008 n=5+5)
Filter/udp6_out-8         184ns ± 2%     314ns ± 3%   +70.43%  (p=0.016 n=4+5)
pkg:tailscale.com/wgengine/tstun goos:linux goarch:amd64
Write-8                  9.02ns ± 3%    8.92ns ± 1%      ~     (p=0.421 n=5+5)

name                   old alloc/op   new alloc/op   delta
pkg:tailscale.com/net/packet goos:linux goarch:amd64
Decode/tcp4-8             0.00B          0.00B           ~     (all equal)
Decode/tcp6-8             0.00B          0.00B           ~     (all equal)
Decode/udp4-8             0.00B          0.00B           ~     (all equal)
Decode/udp6-8             0.00B          0.00B           ~     (all equal)
Decode/icmp4-8            0.00B          0.00B           ~     (all equal)
Decode/icmp6-8            0.00B          0.00B           ~     (all equal)
Decode/igmp-8             0.00B          0.00B           ~     (all equal)
Decode/unknown-8          0.00B          0.00B           ~     (all equal)
pkg:tailscale.com/wgengine/filter goos:linux goarch:amd64
Filter/icmp4-8            0.00B          0.00B           ~     (all equal)
Filter/tcp4_syn_in-8      0.00B          0.00B           ~     (all equal)
Filter/tcp4_syn_out-8     0.00B          0.00B           ~     (all equal)
Filter/udp4_in-8          0.00B          0.00B           ~     (all equal)
Filter/udp4_out-8         16.0B ± 0%     64.0B ± 0%  +300.00%  (p=0.008 n=5+5)
Filter/icmp6-8            0.00B          0.00B           ~     (all equal)
Filter/tcp6_syn_in-8      0.00B          0.00B           ~     (all equal)
Filter/tcp6_syn_out-8     0.00B          0.00B           ~     (all equal)
Filter/udp6_in-8          0.00B          0.00B           ~     (all equal)
Filter/udp6_out-8         48.0B ± 0%     64.0B ± 0%   +33.33%  (p=0.008 n=5+5)

name                   old allocs/op  new allocs/op  delta
pkg:tailscale.com/net/packet goos:linux goarch:amd64
Decode/tcp4-8              0.00           0.00           ~     (all equal)
Decode/tcp6-8              0.00           0.00           ~     (all equal)
Decode/udp4-8              0.00           0.00           ~     (all equal)
Decode/udp6-8              0.00           0.00           ~     (all equal)
Decode/icmp4-8             0.00           0.00           ~     (all equal)
Decode/icmp6-8             0.00           0.00           ~     (all equal)
Decode/igmp-8              0.00           0.00           ~     (all equal)
Decode/unknown-8           0.00           0.00           ~     (all equal)
pkg:tailscale.com/wgengine/filter goos:linux goarch:amd64
Filter/icmp4-8             0.00           0.00           ~     (all equal)
Filter/tcp4_syn_in-8       0.00           0.00           ~     (all equal)
Filter/tcp4_syn_out-8      0.00           0.00           ~     (all equal)
Filter/udp4_in-8           0.00           0.00           ~     (all equal)
Filter/udp4_out-8          1.00 ± 0%      1.00 ± 0%      ~     (all equal)
Filter/icmp6-8             0.00           0.00           ~     (all equal)
Filter/tcp6_syn_in-8       0.00           0.00           ~     (all equal)
Filter/tcp6_syn_out-8      0.00           0.00           ~     (all equal)
Filter/udp6_in-8           0.00           0.00           ~     (all equal)
Filter/udp6_out-8          1.00 ± 0%      1.00 ± 0%      ~     (all equal)

Signed-off-by: David Anderson <danderson@tailscale.com>
2020-12-22 14:44:36 -08:00
Brad Fitzpatrick
053a1d1340 all: annotate log verbosity levels on most egregiously spammy log prints
Fixes #924
Fixes #282

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2020-12-21 12:59:33 -08:00
David Anderson
891110e64c wgengine: expand lazy config to work with dual-stacked peers.
Lazy wg configuration now triggers if a peer has only endpoint
addresses (/32 for IPv4, /128 for IPv6). Subnet routers still
trigger eager configuration to avoid the need for a CIDR match
in the hot packet path.

Signed-off-by: David Anderson <danderson@tailscale.com>
2020-12-19 13:50:44 -08:00
David Anderson
be6fe393c5 wgengine: don't try pinging IPv6 addresses in legacy pinger.
Signed-off-by: David Anderson <danderson@tailscale.com>
2020-12-01 20:09:32 -08:00
Brad Fitzpatrick
d9e2edb5ae wgengine: reconfigure wireguard peer in two steps when its disco key changes
First remove the device (to clear its wireguard session key), and then
add it back.

Fixes #929

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2020-11-16 15:26:42 -08:00