Commit Graph

43 Commits (4c0494185b65a81b50b543e14292c161bd6ff56f)

Author SHA1 Message Date
Brad Fitzpatrick ddb8726c98 util/deephash: don't reflect.Copy if element type is a defined uint8
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick df176c82f5 util/deephash: skip alloc test under race detector
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 6dc38ff25c util/deephash: optimize hashing of byte arrays, reduce allocs in Hash
name              old time/op    new time/op    delta
Hash-6               173µs ± 4%     101µs ± 3%   -41.69%  (p=0.000 n=10+9)
HashMapAcyclic-6     101µs ± 5%     105µs ± 3%    +3.52%  (p=0.001 n=9+10)
TailcfgNode-6       29.4µs ± 2%    16.4µs ± 3%   -44.25%  (p=0.000 n=8+10)

name              old alloc/op   new alloc/op   delta
Hash-6              3.60kB ± 0%    1.13kB ± 0%   -68.70%  (p=0.000 n=10+10)
HashMapAcyclic-6    2.53kB ± 0%    2.53kB ± 0%      ~     (p=0.137 n=10+8)
TailcfgNode-6         528B ± 0%        0B       -100.00%  (p=0.000 n=10+10)

name              old allocs/op  new allocs/op  delta
Hash-6                84.0 ± 0%      40.0 ± 0%   -52.38%  (p=0.000 n=10+10)
HashMapAcyclic-6       202 ± 0%       202 ± 0%      ~     (all equal)
TailcfgNode-6         11.0 ± 0%       0.0       -100.00%  (p=0.000 n=10+10)

Updates tailscale/corp#2130

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 3962744450 util/deephash: prevent infinite loop on map cycle
Fixes #2340

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick aceaa70b16 util/deephash: move funcs to methods
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 14f901da6d util/deephash: fix sync.Pool usage
Whoops.

From yesterday's 9ae3bd0939 (not yet
used by anything, fortunately)

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick e0258ffd92 util/deephash: use keyed struct literal, fix vet
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick bf9f279768 util/deephash: optimize CPU a bit by by avoiding fmt in more places
name              old time/op    new time/op    delta
Hash-6               179µs ± 5%     173µs ± 4%   -3.12%  (p=0.004 n=10+10)
HashMapAcyclic-6     115µs ± 3%     101µs ± 5%  -11.51%  (p=0.000 n=9+9)
TailcfgNode-6       30.8µs ± 4%    29.4µs ± 2%   -4.51%  (p=0.000 n=10+8)

name              old alloc/op   new alloc/op   delta
Hash-6              3.60kB ± 0%    3.60kB ± 0%     ~     (p=0.445 n=9+10)
HashMapAcyclic-6    2.53kB ± 0%    2.53kB ± 0%     ~     (p=0.065 n=9+10)
TailcfgNode-6         528B ± 0%      528B ± 0%     ~     (all equal)

name              old allocs/op  new allocs/op  delta
Hash-6                84.0 ± 0%      84.0 ± 0%     ~     (all equal)
HashMapAcyclic-6       202 ± 0%       202 ± 0%     ~     (all equal)
TailcfgNode-6         11.0 ± 0%      11.0 ± 0%     ~     (all equal)

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 58f2ef6085 util/deephash: add a benchmark and some benchmark data
No code changes.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 9ae3bd0939 util/deephash: export a Hash func for use by the control plane
name              old time/op    new time/op    delta
Hash-6              69.4µs ± 6%    68.4µs ± 4%     ~     (p=0.286 n=9+9)
HashMapAcyclic-6     115µs ± 5%     115µs ± 4%     ~     (p=1.000 n=10+10)

name              old alloc/op   new alloc/op   delta
Hash-6              2.29kB ± 0%    1.88kB ± 0%  -18.13%  (p=0.000 n=10+10)
HashMapAcyclic-6    2.53kB ± 0%    2.53kB ± 0%     ~     (all equal)

name              old allocs/op  new allocs/op  delta
Hash-6                58.0 ± 0%      54.0 ± 0%   -6.90%  (p=0.000 n=10+10)
HashMapAcyclic-6       202 ± 0%       202 ± 0%     ~     (all equal)

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 700badd8f8 util/deephash: move internal/deephash to util/deephash
No code changes. Just a minor package doc addition about lack of API
stability.
3 years ago
David Crawshaw 6b9f8208f4 net/dns: do not run wsl.exe as LocalSystem
It doesn't work. It needs to run as the user.

	https://github.com/microsoft/WSL/issues/4803

The mechanism for doing this was extracted from:

	https://web.archive.org/web/20101009012531/http://blogs.msdn.com/b/winsdk/archive/2009/07/14/launching-an-interactive-process-from-windows-service-in-windows-vista-and-later.aspx

While here, we also reclaculate WSL distro set on SetDNS.
This accounts for:

	1. potential inability to access wsl.exe on startup
	2. WSL being installed while Tailscale is running
	3. A new WSL distrobution being installed

Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
3 years ago
Maisem Ali f944614c5c cmd/tailscale/web: add support for QNAP
Signed-off-by: Maisem Ali <maisem@tailscale.com>
3 years ago
David Anderson c54cc24e87 util/dnsname: make ToFQDN take exactly 0 or 1 allocs for everything.
name                                    old time/op    new time/op    delta
ToFQDN/www.tailscale.com.-32              9.55ns ± 2%   12.13ns ± 3%  +27.03%  (p=0.000 n=10+10)
ToFQDN/www.tailscale.com-32               86.3ns ± 1%    40.7ns ± 1%  -52.86%  (p=0.000 n=10+9)
ToFQDN/.www.tailscale.com-32              86.5ns ± 1%    40.4ns ± 1%  -53.29%  (p=0.000 n=10+9)
ToFQDN/_ssh._tcp.www.tailscale.com.-32    12.8ns ± 2%    14.7ns ± 2%  +14.24%  (p=0.000 n=9+10)
ToFQDN/_ssh._tcp.www.tailscale.com-32      104ns ± 1%      45ns ± 0%  -57.16%  (p=0.000 n=10+9)

name                                    old alloc/op   new alloc/op   delta
ToFQDN/www.tailscale.com.-32               0.00B          0.00B          ~     (all equal)
ToFQDN/www.tailscale.com-32                72.0B ± 0%     24.0B ± 0%  -66.67%  (p=0.000 n=10+10)
ToFQDN/.www.tailscale.com-32               72.0B ± 0%     24.0B ± 0%  -66.67%  (p=0.000 n=10+10)
ToFQDN/_ssh._tcp.www.tailscale.com.-32     0.00B          0.00B          ~     (all equal)
ToFQDN/_ssh._tcp.www.tailscale.com-32       112B ± 0%       32B ± 0%  -71.43%  (p=0.000 n=10+10)

name                                    old allocs/op  new allocs/op  delta
ToFQDN/www.tailscale.com.-32                0.00           0.00          ~     (all equal)
ToFQDN/www.tailscale.com-32                 2.00 ± 0%      1.00 ± 0%  -50.00%  (p=0.000 n=10+10)
ToFQDN/.www.tailscale.com-32                2.00 ± 0%      1.00 ± 0%  -50.00%  (p=0.000 n=10+10)
ToFQDN/_ssh._tcp.www.tailscale.com.-32      0.00           0.00          ~     (all equal)
ToFQDN/_ssh._tcp.www.tailscale.com-32       2.00 ± 0%      1.00 ± 0%  -50.00%  (p=0.000 n=10+10)

Signed-off-by: David Anderson <danderson@tailscale.com>
3 years ago
David Anderson d7f6ef3a79 util/dnsname: add a benchmark for ToFQDN.
Signed-off-by: David Anderson <danderson@tailscale.com>
3 years ago
David Anderson caaefa00a0 util/dnsname: don't validate the contents of DNS labels.
DNS names consist of labels, but outside of length limits, DNS
itself permits any content within the labels. Some records require
labels to conform to hostname limitations (which is what we implemented
before), but not all.

Fixes #2024.

Signed-off-by: David Anderson <danderson@tailscale.com>
3 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
David Anderson 31f81b782e util/cmpver: move into OSS from corp repo.
Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
Aleksandar Pesic 7c985e4944 ipn/ipnlocal: add file sharing to windows shell
Updates: tailscale/winmin#33

Signed-off-by: Aleksandar Pesic <peske.nis@gmail.com>
4 years ago
David Anderson 7055f870f8 control/controlclient: only use a single DNS label as the hostname.
Fixes #971

Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson 1a371b93be util/dnsname: add FQDN type, use throughout codebase.
Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson 9f105d3968 net/dns/resolver: teach the forwarder to do per-domain routing.
Given a DNS route map, the forwarder selects the right set of
upstreams for a given name.

Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
Christine Dodrill a480b1baa5
logpolicy: set log target on windows based on a registry key (#1542)
Signed-off-by: Christine Dodrill <xe@tailscale.com>
4 years ago
Matt Layher 719de8f0e1 util/systemd: explicitly check for os.ErrNotExist from sdnotify
Signed-off-by: Matt Layher <mdlayher@gmail.com>
4 years ago
Brad Fitzpatrick 2d5db90161 util/winutil: make it actually compile
Helps to use the right GOOS after refactoring, sigh.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Brad Fitzpatrick e98cdbb8b6 util/winutil: add little Windows utility package
Code from Alex Brainman, split out of another change. I changed it to
a comma-ok return and tweaked the docs a bit.
4 years ago
Sonia Appasamy 76fb27bea7
dnsname,tailcfg: add hostname sanitation logic to node display names (#1304)
Signed-off-by: Sonia Appasamy <sonia@tailscale.com>
4 years ago
Josh Bleecher Snyder 635e4c7435 wgengine/magicsock: increase legacy ping timeout again
I based my estimation of the required timeout based on locally
observed behavior. But CI machines are worse than my local machine.
16s was enough to reduce flakiness but not eliminate it. Bump it up again.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
4 years ago
Sonia Appasamy 4dab0c1702
tailcfg: update node display name fields and methods (#1207)
Signed-off-by: Sonia Appasamy <sonia@tailscale.com>

Consolidates the node display name logic from each of the clients into
tailcfg.Node. UI clients can use these names directly, rather than computing
them independently.
4 years ago
Sonia Appasamy 567c5a6d9e
tailcfg, controlclient: add DisplayName field to tailcfg.Node and populate it from controlclient (#1191)
Signed-off-by: Sonia Appasamy <sonia@tailscale.com>
4 years ago
Brad Fitzpatrick 5efb0a8bca cmd/tailscale: change formatting of "tailscale status"
* show DNS name over hostname, removing domain's common MagicDNS suffix.
  only show hostname if there's no DNS name.
  but still show shared devices' MagicDNS FQDN.

* remove nerdy low-level details by default: endpoints, DERP relay,
  public key.  They're available in JSON mode still for those who need
  them.

* only show endpoint or DERP relay when it's active with the goal of
  making debugging easier. (so it's easier for users to understand
  what's happening) The asterisks are gone.

* remove Tx/Rx numbers by default for idle peers; only show them when
  there's traffic.

* include peers' owner login names

* add CLI option to not show peers (matching --self=true, --peers= also
  defaults to true)

* sort by DNS/host name, not public key

* reorder columns
4 years ago
Brad Fitzpatrick 5f07da4854 util/systemd: don't log warnings when not running under systemd
It caused our integration tests to fail, which prohibit logging to
os.Stderr for test cleanliness reasons.
4 years ago
Christine Dodrill 7ea809897d ipn/ipnserver: enable systemd-notify support
Addresses #964

Still to be done:
- Figure out the correct logging lines in util/systemd
- Figure out if we need to slip the systemd.Status function anywhere
  else
- Log util/systemd errors? (most of the errors are of the "you cannot do
  anything about this, but it might be a bad idea to crash the program if
  it errors" kind)

Assistance in getting this over the finish line would help a lot.

Signed-off-by: Christine Dodrill <me@christine.website>

util/systemd: rename the nonlinux file to appease the magic

Signed-off-by: Christine Dodrill <me@christine.website>

util/systemd: fix package name

Signed-off-by: Christine Dodrill <me@christine.website>

util/systemd: fix review feedback from @mdlayher

Signed-off-by: Christine Dodrill <me@christine.website>

cmd/tailscale{,d}: update depaware manifests

Signed-off-by: Christine Dodrill <me@christine.website>

util/systemd: use sync.Once instead of func init

Signed-off-by: Christine Dodrill <me@christine.website>

control/controlclient: minor review feedback fixes

Signed-off-by: Christine Dodrill <me@christine.website>

{control,ipn,systemd}: fix review feedback

Signed-off-by: Christine Dodrill <me@christine.website>

review feedback fixes

Signed-off-by: Christine Dodrill <me@christine.website>

ipn: fix sprintf call

Signed-off-by: Christine Dodrill <me@christine.website>

ipn: make staticcheck less sad

Signed-off-by: Christine Dodrill <me@christine.website>

ipn: print IP address in connected status

Signed-off-by: Christine Dodrill <me@christine.website>

ipn: review feedback

Signed-off-by: Christine Dodrill <me@christine.website>

final fixups

Signed-off-by: Christine Dodrill <me@christine.website>
4 years ago
Josh Bleecher Snyder a5dd0bcb09 util/jsonutil: new package
The cornerstone API is a more memory-efficient Unmarshal.
The savings come from re-using a json.Decoder.

BenchmarkUnmarshal-8      	 4016418	       288 ns/op	       8 B/op	       1 allocs/op
BenchmarkStdUnmarshal-8   	 4189261	       283 ns/op	     184 B/op	       2 allocs/op

It also includes a Bytes type to reduce allocations
when unmarshalling a non-hex-encoded JSON string into a []byte.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
4 years ago
Josh Bleecher Snyder b65eee0745 util/lineread: add docs to Reader
In particular, point out how to stop reading
and detect it on the other side.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
4 years ago
Brad Fitzpatrick c8939ab7c7 util/endian: add Native variable to get the platform's native binary.ByteOrder
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
Brad Fitzpatrick ff50ddf1ee util/racebuild: add package to export a race-is-enabled const 4 years ago
Brad Fitzpatrick 000347d4cf util/endian: add package with const for whether platform is big endian 4 years ago
Josh Bleecher Snyder 9784cae23b util/uniq: add new package
This makes it easy to compact slices that contain duplicate elements
by sorting and then uniqing.

This is an alternative to constructing an intermediate map
and then extracting elements from it. It also provides
more control over equality than using a map key does.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
4 years ago
Brad Fitzpatrick bc1751a376 util/pidowner: add missing copyright header 4 years ago
Brad Fitzpatrick b14288f96c util/pidowner: add two missing copyright headers 4 years ago
Brad Fitzpatrick 23f01174ea util/pidowner: new package to map from process ID to its user ID 4 years ago
Brad Fitzpatrick c3c607e78a util/lineread: add little package to read lines from files/Readers 4 years ago