Commit Graph

489 Commits

Author SHA1 Message Date
Maisem Ali
d06a75dcd0 ipn/ipnlocal: fix deadlock in resetControlClientLocked
resetControlClientLocked is called while b.mu was held and
would call cc.Shutdown which would wait for the observer queue
to drain.
However, there may be active callbacks from cc already waiting for
b.mu resulting in a deadlock.

This makes it so that resetControlClientLocked does not call
Shutdown, and instead just returns the value.
It also makes it so that any status received from previous cc
are ignored.

Updates tailscale/corp#12827

Signed-off-by: Maisem Ali <maisem@tailscale.com>
2023-09-02 13:47:32 -07:00
Joe Tsai
c6fadd6d71
all: implement AppendText alongside MarshalText (#9207)
This eventually allows encoding packages that may respect
the proposed encoding.TextAppender interface.
The performance gains from this is between 10-30%.

Updates tailscale/corp#14379

Signed-off-by: Joe Tsai <joetsai@digital-static.net>
2023-09-01 18:15:19 -07:00
Brad Fitzpatrick
003e4aff71 control/controlclient: clean up various things in prep for state overhaul
We want the overall state (used only for tests) to be computed from
the individual states of each component, rather than moving the state
around by hand in dozens of places.

In working towards that, we found a lot of things to clean up.

Updates #cleanup

Change-Id: Ieaaae5355dfae789a8ec7a56ce212f1d7e3a92db
Co-authored-by: Maisem Ali <maisem@tailscale.com>
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-09-01 12:23:34 -07:00
Brad Fitzpatrick
9cbec4519b control/controlclient: serialize Observer calls
Don't just start goroutines and hope for them to be ordered.

Fixes potential regression from earlier 7074a40c0.

Updates #cleanup

Change-Id: I501a6f3e4e8e6306b958bccdc1e47869991c31f7
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-09-01 10:25:37 -07:00
Brad Fitzpatrick
f7b7ccf835 control/controlclient, ipn/ipnlocal: unplumb a bool true literal opt
Updates #cleanup

Change-Id: I664f280a2e06b9875942458afcaf6be42a5e462a
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-08-31 22:34:21 -07:00
Maisem Ali
959362a1f4 ipn/ipnlocal,control/controlclient: make Logout more sync
We already removed the async API, make it more sync and remove
the FinishLogout state too.

This also makes the callback be synchronous again as the previous
attempt was trying to work around the logout callback resulting
in a client shutdown getting blocked forever.

Updates #3833

Signed-off-by: Maisem Ali <maisem@tailscale.com>
2023-08-31 21:29:12 -07:00
Maisem Ali
7074a40c06 control/controlclient: run SetControlClientStatus in goroutine
We have cases where the SetControlClientStatus would result in
a Shutdown call back into the auto client that would block
forever. The right thing to do here is to fix the LocalBackend
state machine but thats a different dumpster fire that we
are slowly making progress towards.

This makes it so that the SetControlClientStatus happens in a
different goroutine so that calls back into the auto client
do not block.

Also add a few missing mu.Unlocks in LocalBackend.Start.

Updates #9181

Signed-off-by: Maisem Ali <maisem@tailscale.com>
2023-08-31 14:54:02 -07:00
Brad Fitzpatrick
86dc0af5ae control/controlclient: rename Auto cancel methods, add missing Lock variant
Then use the Locked variants in Shutdown while we already hold the lock.

Updates #cleanup

Change-Id: I367d53e6be6f37f783c8f43fc9c4d498d0adf501
Co-authored-by: Maisem Ali <maisem@tailscale.com>
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-08-31 14:53:48 -07:00
Brad Fitzpatrick
04e1ce0034 control/controlclient: remove unused StartLogout
Updates #cleanup

Co-authored-by: Maisem Ali <maisem@tailscale.com>
Change-Id: I9d052fdbee787f1e8c872124e4bee61c7f04d142
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-08-30 20:23:03 -07:00
Brad Fitzpatrick
c621141746 control/controlclient: cancel map poll when logging out
Don't depend on the server to do it.

Updates #cleanup

Change-Id: I8ff40b02aa877155a71fd4db58cbecb872241ac8
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-08-30 13:46:54 -07:00
Brad Fitzpatrick
313a129fe5 control/controlclient: use slices package more
Updates #cleanup

Change-Id: Ic17384266dc59bc4e710efdda311d6e0719529da
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-08-30 13:45:20 -07:00
Brad Fitzpatrick
f5bfdefa00 control/controlclient: de-pointer Status.PersistView, document more
Updates #cleanup
Updates #1909

Change-Id: I31d91e120e3b299508de2136021eab3b34131a44
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-08-30 11:48:58 -07:00
Brad Fitzpatrick
7053e19562 control/controlclient: delete Status.Log{in,out}Finished
They were entirely redundant and 1:1 with the status field
so this turns them into methods instead.

Updates #cleanup
Updates #1909

Change-Id: I7d939750749edf7dae4c97566bbeb99f2f75adbc
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-08-30 11:21:06 -07:00
Brad Fitzpatrick
9ce1f5c7d2 control/controlclient: unexport Status.state, add test-only accessor
Updates #cleanup
Updates #1909

Change-Id: I38dcde6fa0de0f58ede4529992cee2e36de33dd6
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-08-30 10:40:05 -07:00
Brad Fitzpatrick
14320290c3 control/controlclient: merge, simplify two health check calls
I'm trying to remove some stuff from the netmap update path.

Updates #1909

Change-Id: Iad2c728dda160cd52f33ef9cf0b75b4940e0ce64
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-08-30 09:14:01 -07:00
Brad Fitzpatrick
6b882a1511 control/controlclient: clean up a few little things
De-pointer a *time.Time type, move it after the mutex which guard is,
rename two test-only methods with our conventional "ForTest" suffix.

Updates #cleanup

Change-Id: I4f4d1acd9c2de33d9c3cb6465d7349ed051aa9f9
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-08-29 08:17:23 -07:00
Brad Fitzpatrick
55bb7314f2 control/controlclient: replace a status func with Observer interface
For now the method has only one interface (the same as the func it's
replacing) but it will grow, eventually with the goal to remove the
controlclient.Status type for most purposes.

Updates #1909

Change-Id: I715c8bf95e3f5943055a94e76af98d988558a2f2
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-08-28 21:07:04 -07:00
Brad Fitzpatrick
590c693b96 types/logger: add AsJSON
Printing out JSON representation things in log output is pretty common.

Updates #cleanup

Change-Id: Ife2d2e321a18e6e1185efa8b699a23061ac5e5a4
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-08-28 15:14:24 -07:00
Brad Fitzpatrick
a79b1d23b8 control/controlclient: convert PeersChanged nodes to patches internally
So even if the server doesn't support sending patches (neither the
Tailscale control server nor Headscale yet do), this makes the client
convert a changed node to its diff so the diffs can be processed
individually in a follow-up change.

This lets us make progress on #1909 without adding a dependency on
finishing the server-side part, and also means other control servers
will get the same upcoming optimizations.

And add some clientmetrics while here.

Updates #1909

Change-Id: I9533bcb8bba5227e17389f0b10dff71f33ee54ec
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-08-28 15:03:12 -07:00
Brad Fitzpatrick
947def7688 types/netmap: remove redundant Netmap.Hostinfo
It was in SelfNode.Hostinfo anyway. The redundant copy was just
costing us an allocation per netmap (a Hostinfo.Clone).

Updates #1909

Change-Id: Ifac568aa5f8054d9419828489442a0f4559bc099
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-08-22 09:54:02 -07:00
Brad Fitzpatrick
db017d3b12 control/controlclient: remove quadratic allocs in mapSession
The mapSession code was previously quadratic: N clients in a netmap
send updates proportional to N and then for each, we do N units of
work. This removes most of that "N units of work" per update. There's
still a netmap-sized slice allocation per update (that's #8963), but
that's it.

Bit more efficient now, especially with larger netmaps:

                                 │     before     │                after                │
                                 │     sec/op     │   sec/op     vs base                │
    MapSessionDelta/size_10-8       47.935µ ±  3%   1.232µ ± 2%  -97.43% (p=0.000 n=10)
    MapSessionDelta/size_100-8      79.950µ ±  3%   1.642µ ± 2%  -97.95% (p=0.000 n=10)
    MapSessionDelta/size_1000-8    355.747µ ± 10%   4.400µ ± 1%  -98.76% (p=0.000 n=10)
    MapSessionDelta/size_10000-8   3079.71µ ±  3%   27.89µ ± 3%  -99.09% (p=0.000 n=10)
    geomean                          254.6µ         3.969µ       -98.44%

                                 │     before     │                after                 │
                                 │      B/op      │     B/op      vs base                │
    MapSessionDelta/size_10-8        9.651Ki ± 0%   2.395Ki ± 0%  -75.19% (p=0.000 n=10)
    MapSessionDelta/size_100-8      83.097Ki ± 0%   3.192Ki ± 0%  -96.16% (p=0.000 n=10)
    MapSessionDelta/size_1000-8     800.25Ki ± 0%   10.32Ki ± 0%  -98.71% (p=0.000 n=10)
    MapSessionDelta/size_10000-8   7896.04Ki ± 0%   82.32Ki ± 0%  -98.96% (p=0.000 n=10)
    geomean                          266.8Ki        8.977Ki       -96.64%

                                 │    before     │               after                │
                                 │   allocs/op   │ allocs/op   vs base                │
    MapSessionDelta/size_10-8         72.00 ± 0%   20.00 ± 0%  -72.22% (p=0.000 n=10)
    MapSessionDelta/size_100-8       523.00 ± 0%   20.00 ± 0%  -96.18% (p=0.000 n=10)
    MapSessionDelta/size_1000-8     5024.00 ± 0%   20.00 ± 0%  -99.60% (p=0.000 n=10)
    MapSessionDelta/size_10000-8   50024.00 ± 0%   20.00 ± 0%  -99.96% (p=0.000 n=10)
    geomean                          1.754k        20.00       -98.86%

Updates #1909

Change-Id: I41ee29358a5521ed762216a76d4cc5b0d16e46ac
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-08-22 08:59:57 -07:00
Brad Fitzpatrick
cb4a61f951 control/controlclient: don't clone self node on each NetworkMap
Drop in the bucket, but have to start somewhere.

Real wins will come once this is done for peers.

                                 │     before     │                after                │
                                 │      B/op      │     B/op       vs base              │
    MapSessionDelta/size_10-8      10.213Ki ± ∞ ¹   9.650Ki ± ∞ ¹  -5.51% (p=0.008 n=5)
    MapSessionDelta/size_100-8      83.64Ki ± ∞ ¹   83.08Ki ± ∞ ¹  -0.67% (p=0.008 n=5)
    MapSessionDelta/size_1000-8     800.8Ki ± ∞ ¹   800.3Ki ± ∞ ¹  -0.07% (p=0.008 n=5)
    MapSessionDelta/size_10000-8    7.712Mi ± ∞ ¹   7.711Mi ± ∞ ¹  -0.01% (p=0.008 n=5)
    geomean                         271.1Ki         266.8Ki        -1.59%

                                 │    before    │               after                │
                                 │  allocs/op   │  allocs/op    vs base              │
    MapSessionDelta/size_10-8       73.00 ± ∞ ¹    72.00 ± ∞ ¹  -1.37% (p=0.008 n=5)
    MapSessionDelta/size_100-8      524.0 ± ∞ ¹    523.0 ± ∞ ¹  -0.19% (p=0.008 n=5)
    MapSessionDelta/size_1000-8    5.025k ± ∞ ¹   5.024k ± ∞ ¹  -0.02% (p=0.008 n=5)
    MapSessionDelta/size_10000-8   50.02k ± ∞ ¹   50.02k ± ∞ ¹  -0.00% (p=0.040 n=5)
    geomean                        1.761k         1.754k        -0.40%

Updates #1909

Change-Id: Ie19dea3371de251d64d4373dd00422f53c2675ea
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-08-21 15:42:33 -07:00
Brad Fitzpatrick
84b94b3146 types/netmap, all: make NetworkMap.SelfNode a tailcfg.NodeView
Updates #1909

Change-Id: I8c470cbc147129a652c1d58eac9b790691b87606
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-08-21 13:34:49 -07:00
Brad Fitzpatrick
b5ff68a968 control/controlclient: flesh out mapSession to break up gigantic method
Now mapSession has a bunch more fields and methods, rather than being
just one massive func with a ton of local variables.

So far there are no major new optimizations, though. It should behave
the same as before.

This has been done with an eye towards testability (so tests can set
all the callback funcs as needed, or not, without a huge Direct client
or long-running HTTP requests), but this change doesn't add new tests
yet. That will follow in the changes which flesh out the NetmapUpdater
interface.

Updates #1909

Change-Id: Iad4e7442d5bbbe2614bd4b1dc4b02e27504898df
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-08-21 10:38:32 -07:00
Brad Fitzpatrick
165f0116f1 types/netmap: move some mutations earlier, remove, document some fields
And optimize the Persist setting a bit, allocating later and only mutating
fields when there's been a Node change.

Updates #1909

Change-Id: Iaddfd9e88ef76e1d18e8d0a41926eb44d0955312
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-08-20 16:26:11 -07:00
Brad Fitzpatrick
21170fb175 control/controlclient: scope a variable tighter, de-pointer a *time.Time
Just misc cleanups.

Updates #1909

Change-Id: I9d64cb6c46d634eb5fdf725c13a6c5e514e02e9a
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-08-20 15:06:24 -07:00
Brad Fitzpatrick
4511e7d64e ipn/ipnstate: add PeerStatus.AltSharerUserID, stop mangling Node.User
In b987b2ab18 (2021-01-12) when we introduced sharing we mapped
the sharer to the userid at a low layer, mostly to fix the display of
"tailscale status" and the client UIs, but also some tests.

The commit earlier today, 7dec09d169, removed the 2.5yo option
to let clients disable that automatic mapping, as clearly we were never
getting around to it.

This plumbs the Sharer UserID all the way to ipnstatus so the CLI
itself can choose to print out the Sharer's identity over the node's
original owner.

Then we stop mangling Node.User and let clients decide how they want
to render things.

To ease the migration for the Windows GUI (which currently operates on
tailcfg.Node via the NetMap from WatchIPNBus, instead of PeerStatus),
a new method Node.SharerOrUser is added to do the mapping of
Sharer-else-User.

Updates #1909
Updates tailscale/corp#1183

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-08-20 08:18:52 -07:00
Brad Fitzpatrick
7dec09d169 control/controlclient: remove Opts.KeepSharerAndUserSplit
It was added 2.5 years ago in c1dabd9436 but was never used.
Clearly that migration didn't matter.

We can attempt this again later if/when this matters.

Meanwhile this simplifies the code and thus makes working on other
current efforts in these parts of the code easier.

Updates #1909

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-08-19 15:06:05 -07:00
Brad Fitzpatrick
58a4fd43d8 types/netmap, all: use read-only tailcfg.NodeView in NetworkMap
Updates #8948

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-08-18 20:04:35 -07:00
Brad Fitzpatrick
af2e4909b6 all: remove some Debug fields, NetworkMap.Debug, Reconfig Debug arg
Updates #8923

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-08-17 19:04:30 -07:00
Brad Fitzpatrick
121d1d002c tailcfg: add nodeAttrs for forcing OneCGNAT on/off [capver 71]
Updates #8923

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-08-17 13:32:12 -07:00
Brad Fitzpatrick
25663b1307 tailcfg: remove most Debug fields, move bulk to nodeAttrs [capver 70]
Now a nodeAttr: ForceBackgroundSTUN, DERPRoute, TrimWGConfig,
DisableSubnetsIfPAC, DisableUPnP.

Kept support for, but also now a NodeAttr: RandomizeClientPort.

Removed: SetForceBackgroundSTUN, SetRandomizeClientPort (both never
used, sadly... never got around to them. But nodeAttrs are better
anyway), EnableSilentDisco (will be a nodeAttr later when that effort
resumes).

Updates #8923

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-08-17 10:52:47 -07:00
Brad Fitzpatrick
239ad57446 tailcfg: move LogHeapPprof from Debug to c2n [capver 69]
And delete Debug.GoroutineDumpURL, which was already in c2n.

Updates #8923

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-08-16 20:35:04 -07:00
Brad Fitzpatrick
1fcae42055 control/controlclient: move lastUpdateGenInformed to tighter scope
No need to have it on Auto or be behind a mutex; it's only read/written
from a single goroutine. Move it there.

Updates tailscale/corp#5761

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-08-13 10:39:17 -07:00
Brad Fitzpatrick
2398993804 control/controlclient: refactor in prep for optimized delta handling
See issue. This is a baby step towards passing through deltas
end-to-end from node to control back to node and down to the various
engine subsystems, not computing diffs from two full netmaps at
various levels. This will then let us support larger netmaps without
burning CPU.

But this change itself changes no behavior. It just changes a func
type to an interface with one method. That paves the way for future
changes to then add new NetmapUpdater methods that do more
fine-grained work than updating the whole world.

Updates #1909

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-08-12 16:09:58 -07:00
M. J. Fromberger
9e24a6508a
control/controlclient: avert a data race when logging (#8863)
The read of the synced field for logging takes place outside the lock, and
races with other (locked) writes of this field, including for example the one
at current line 556 in mapRoutine.

Updates tailscale/corp#13856

Change-Id: I056b36d7a93025aafdf73528dd7645f10b791af6
Signed-off-by: M. J. Fromberger <fromberger@tailscale.com>
2023-08-11 18:49:40 -07:00
Maisem Ali
d16946854f control/controlclient: add Auto.updateRoutine
Instead of having updates replace the map polls, create
a third goroutine which is solely responsible for making
sure that control is aware of the latest client state.

This also makes it so that the streaming map polls are only
broken when there are auth changes, or the client is paused.

Updates tailscale/corp#5761

Signed-off-by: Maisem Ali <maisem@tailscale.com>
2023-08-10 12:23:08 -07:00
Maisem Ali
734928d3cb control/controlclient: make Direct own all changes to Persist
It was being modified in two places in Direct for the auth routine
and then in LocalBackend when a new NetMap was received. This was
confusing, so make Direct also own changes to Persist when a new
NetMap is received.

Updates #7726

Signed-off-by: Maisem Ali <maisem@tailscale.com>
2023-08-08 13:43:37 -06:00
Maisem Ali
6aaf1d48df types/persist: drop duplicated Persist.LoginName
It was duplicated from Persist.UserProfile.LoginName, drop it.

Updates #7726

Signed-off-by: Maisem Ali <maisem@tailscale.com>
2023-08-08 13:43:37 -06:00
Maisem Ali
17ed2da94d control/controlclient: use ptr.To
Updates #cleanup

Signed-off-by: Maisem Ali <maisem@tailscale.com>
2023-08-08 10:47:24 -06:00
salman aljammaz
25a7204bb4
wgengine,ipn,cmd/tailscale: add size option to ping (#8739)
This adds the capability to pad disco ping message payloads to reach a
specified size. It also plumbs it through to the tailscale ping -size
flag.

Disco pings used for actual endpoint discovery do not use this yet.

Updates #311.

Signed-off-by: salman <salman@tailscale.com>
Co-authored-by: Val <valerie@tailscale.com>
2023-08-08 13:11:28 +01:00
Claire Wang
a17c45fd6e
control: use tstime instead of time (#8595)
Updates #8587
Signed-off-by: Claire Wang <claire@tailscale.com>
2023-08-04 19:29:44 -04:00
Maisem Ali
60e5761d60 control/controlclient: reset backoff in mapRoutine on netmap recv
We were never resetting the backoff in streaming mapResponses.
The call to `PollNetMap` always returns with an error. Changing that contract
is harder, so manually reset backoff when a netmap is received.

Updates tailscale/corp#12894

Signed-off-by: Maisem Ali <maisem@tailscale.com>
2023-07-13 21:08:28 -07:00
Andrew Dunham
7aba0b0d78 net/netcheck, tailcfg: add DERPHomeParams and use it
This allows providing additional information to the client about how to
select a home DERP region, such as preferring a given DERP region over
all others.

Updates #8603

Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: I7c4a270f31d8585112fab5408799ffba5b75266f
2023-07-13 22:41:21 -04:00
Maisem Ali
9d1a3a995c control/controlclient: use ctx passed down to NoiseClient.getConn
Without this, the client would just get stuck dialing even if the
context was canceled.

Updates tailscale/corp#12590

Signed-off-by: Maisem Ali <maisem@tailscale.com>
2023-07-07 15:11:44 -07:00
Brad Fitzpatrick
7c1068b7ac util/goroutines: let ScrubbedGoroutineDump get only current stack
ScrubbedGoroutineDump previously only returned the stacks of all
goroutines. I also want to be able to use this for only the current
goroutine's stack. Add a bool param to support both ways.

Updates tailscale/corp#5149

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-06-23 12:50:45 -07:00
Andrew Dunham
42fd964090 control/controlclient: use dnscache.Resolver for Noise client
This passes the *dnscache.Resolver down from the Direct client into the
Noise client and from there into the controlhttp client. This retains
the Resolver so that it can share state across calls instead of creating
a new resolver.

Updates #4845
Updates #6110

Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: Ia5d6af1870f3b5b5d7dd5685d775dcf300aec7af
2023-05-01 13:22:10 -07:00
Mihai Parparita
7330aa593e all: avoid repeated default interface lookups
On some platforms (notably macOS and iOS) we look up the default
interface to bind outgoing connections to. This is both duplicated
work and results in logspam when the default interface is not available
(i.e. when a phone has no connectivity, we log an error and thus cause
more things that we will try to upload and fail).

Fixed by passing around a netmon.Monitor to more places, so that we can
use its cached interface state.

Fixes #7850
Updates #7621

Signed-off-by: Mihai Parparita <mihai@tailscale.com>
2023-04-20 15:46:01 -07:00
Mihai Parparita
4722f7e322 all: move network monitoring from wgengine/monitor to net/netmon
We're using it in more and more places, and it's not really specific to
our use of Wireguard (and does more just link/interface monitoring).

Also removes the separate interface we had for it in sockstats -- it's
a small enough package (we already pull in all of its dependencies
via other paths) that it's not worth the extra complexity.

Updates #7621
Updates #7850

Signed-off-by: Mihai Parparita <mihai@tailscale.com>
2023-04-20 10:15:59 -07:00
Mihai Parparita
9a655a1d58 net/dnsfallback: more explicitly pass through logf function
Redoes the approach from #5550 and #7539 to explicitly pass in the logf
function, instead of having global state that can be overridden.

Signed-off-by: Mihai Parparita <mihai@tailscale.com>
2023-04-17 12:06:23 -07:00
Mihai Parparita
edb02b63f8 net/sockstats: pass in logger to sockstats.WithSockStats
Using log.Printf may end up being printed out to the console, which
is not desirable. I noticed this when I was investigating some client
logs with `sockstats: trace "NetcheckClient" was overwritten by another`.
That turns to be harmless/expected (the netcheck client will fall back
to the DERP client in some cases, which does its own sockstats trace).

However, the log output could be visible to users if running the
`tailscale netcheck` CLI command, which would be needlessly confusing.

Updates tailscale/corp#9230

Signed-off-by: Mihai Parparita <mihai@tailscale.com>
2023-04-12 18:40:03 -07:00
Kurnia D Win
9526858b1e control/controlclient: fix accidental backoff reset
Signed-off-by: Kurnia D Win <kurnia.d.win@gmail.com>
2023-03-15 10:25:48 -07:00
Andrew Dunham
83fa17d26c various: pass logger.Logf through to more places
Updates #7537

Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: Id89acab70ea678c8c7ff0f44792d54c7223337c6
2023-03-12 12:38:38 -04:00
Maisem Ali
be027a9899 control/controlclient: improve handling of concurrent lite map requests
This reverts commit 6eca47b16c and fixes forward.

Previously the first ever streaming MapRequest that a client sent would also
set ReadOnly to true as it didn't have any endpoints and expected/relied on the
map poll to restart as soon as it got endpoints. However with 48f6c1eba4,
we would no longer restart MapRequests as frequently as we used to, so control
would only ever get the first streaming MapRequest which had ReadOnly=true.

Control would treat this as an uninteresting request and would not send it
any further netmaps, while the client would happily stay in the map poll forever
while litemap updates happened in parallel.

This makes it so that we never set `ReadOnly=true` when we are doing a streaming
MapRequest. This is no longer necessary either as most endpoint discovery happens
over disco anyway.

Co-authored-by: Andrew Dunham <andrew@du.nham.ca>
Signed-off-by: Maisem Ali <maisem@tailscale.com>
2023-03-09 11:36:44 -08:00
Tom DNetto
ce99474317 all: implement preauth-key support with tailnet lock
Signed-off-by: Tom DNetto <tom@tailscale.com>
2023-03-08 11:56:46 -10:00
Tom DNetto
6eca47b16c Revert "control/controlclient: improve handling of concurrent lite map requests"
This reverts commit 48f6c1eba4.

It unfortunately breaks mapresponse wakeups.

Signed-off-by: Tom DNetto <tom@tailscale.com>
2023-03-08 09:47:44 -10:00
Andrew Dunham
48f6c1eba4 control/controlclient: improve handling of concurrent lite map requests
Prior to this change, if we were in the middle of a lite map update we'd
tear down the entire map session and restart it. With this change, we'll
cancel an in-flight lite map request up to 10 times and restart before
we tear down the streaming map request. We tear down everything after 10
retries to ensure that a steady stream of calls to sendNewMapRequest
doesn't fail to make progress by repeatedly canceling and restarting.

Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Co-authored-by: Maisem Ali <maisem@tailscale.com>
Change-Id: I9392bf8cf674e7a58ccd1e476039300a359ef3b1
2023-03-07 19:29:55 -05:00
Mihai Parparita
6ac6ddbb47 sockstats: switch label to enum
Makes it cheaper/simpler to persist values, and encourages reuse of
labels as opposed to generating an arbitrary number.

Updates tailscale/corp#9230
Updates #3363

Signed-off-by: Mihai Parparita <mihai@tailscale.com>
2023-03-06 15:54:35 -08:00
Maisem Ali
1a30b2d73f all: use tstest.Replace more
Signed-off-by: Maisem Ali <maisem@tailscale.com>
2023-03-04 12:24:55 -08:00
Mihai Parparita
9cb332f0e2 sockstats: instrument networking code paths
Uses the hooks added by tailscale/go#45 to instrument the reads and
writes on the major code paths that do network I/O in the client. The
convention is to use "<package>.<type>:<label>" as the annotation for
the responsible code path.

Enabled on iOS, macOS and Android only, since mobile platforms are the
ones we're most interested in, and we are less sensitive to any
throughput degradation due to the per-I/O callback overhead (macOS is
also enabled for ease of testing during development).

For now just exposed as counters on a /v0/sockstats PeerAPI endpoint.

We also keep track of the current interface so that we can break out
the stats by interface.

Updates tailscale/corp#9230
Updates #3363

Signed-off-by: Mihai Parparita <mihai@tailscale.com>
2023-03-01 12:09:31 -08:00
Will Norris
71029cea2d all: update copyright and license headers
This updates all source files to use a new standard header for copyright
and license declaration.  Notably, copyright no longer includes a date,
and we now use the standard SPDX-License-Identifier header.

This commit was done almost entirely mechanically with perl, and then
some minimal manual fixes.

Updates #6865

Signed-off-by: Will Norris <will@tailscale.com>
2023-01-27 15:36:29 -08:00
Brad Fitzpatrick
6edf357b96 all: start groundwork for using capver for localapi & peerapi
Updates #7015

Change-Id: I3d4c11b42a727a62eaac3262a879f29bb4ce82dd
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-01-19 14:53:47 -08:00
Andrew Dunham
3a018e51bb ipn/ipnlocal: move handling of expired nodes to LocalBackend
In order to be able to synthesize a new NetMap when a node expires, have
LocalBackend start a timer when receiving a new NetMap that fires
slightly after the next node expires. Additionally, move the logic that
updates expired nodes into LocalBackend so it runs on every netmap
(whether received from controlclient or self-triggered).

Updates #6932

Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: I833390e16ad188983eac29eb34cc7574f555f2f3
2023-01-14 16:35:02 -05:00
Andrew Dunham
1e67947cfa control/controlclient, tailcfg: add Node.Expired field, set for expired nodes
Nodes that are expired, taking into account the time delta calculated
from MapResponse.ControlTime have the newly-added Expired boolean set.
For additional defense-in-depth, also replicate what control does and
clear the Endpoints and DERP fields, and additionally set the node key
to a bogus value.

Updates #6932

Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: Ia2bd6b56064416feee28aef5699ca7090940662a
2023-01-11 09:45:21 -05:00
Brad Fitzpatrick
eafbf8886d ipn/localapi: add localapi debug endpoints for packet filter/matches
For debugging #6423. This is easier than TS_DEBUG_MAP, as this means I
can pipe things into jq, etc.

Updates #6423

Change-Id: Ib3e7496b2eb3f47d4bed42e9b8045a441424b23c
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-01-03 15:54:51 -08:00
Brad Fitzpatrick
197a4f1ae8 types/ptr: move all the ptrTo funcs to one new package's ptr.To
Change-Id: Ia0b820ffe7aa72897515f19bd415204b6fe743c7
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-11-30 17:50:51 -08:00
Brad Fitzpatrick
20b27df4d0 tailcfg, ipn, controlclient: add MapResponse.ClientVersion, plumb to IPN bus
Updates #6480

Change-Id: I6321071425cd091148d8140d1eb24dd536bb7984
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-11-23 20:24:12 -08:00
Maisem Ali
513780f4f8 ipn/ipnlocal: move URL validation to LocalBackend
Updates tailscale/corp#7948

Signed-off-by: Maisem Ali <maisem@tailscale.com>
2022-11-16 21:54:58 +05:00
Brad Fitzpatrick
97319a1970 control/controlclient: filter PopBrowserURL values to https schemes
No need for http://, etc. In case a control server sends a bogus value
and GUIs don't also validate.

Updates tailscale/corp#7948

Change-Id: I0b7dd86aa396bdabd88f0c4fe51831fb2ec4175a
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-11-16 07:54:52 -08:00
Maisem Ali
235309adc4 all: store NL keys per profile
This moves the NetworkLock key from a dedicated StateKey to be part of the persist.Persist struct.
This struct is stored as part for ipn.Prefs and is also the place where we store the NodeKey.

It also moves the ChonkDir from "/tka" to "/tka-profile/<profile-id>". The rename was intentional
to be able to delete the "/tka" dir if it exists.

This means that we will have a unique key per profile, and a unique directory per profile.

Note: `tailscale logout` will delete the entire profile, including any keys. It currently does not
delete the ChonkDir.

Signed-off-by: Maisem Ali <maisem@tailscale.com>
2022-11-15 19:51:52 +00:00
Brad Fitzpatrick
3f8e185003 health: add Warnable, move ownership of warnable items to callers
The health package was turning into a rando dumping ground. Make a new
Warnable type instead that callers can request an instance of, and
then Set it locally in their code without the health package being
aware of all the things that are warnable. (For plenty of things the
health package will want to know details of how Tailscale works so it
can better prioritize/suppress errors, but lots of the warnings are
pretty leaf-y and unrelated)

This just moves two of the health warnings. Can probably move more
later.

Change-Id: I51e50e46eb633f4e96ced503d3b18a1891de1452
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-11-13 08:00:27 -08:00
Maisem Ali
f00a49667d control/controlclient: make Status.Persist a PersistView
Signed-off-by: Maisem Ali <maisem@tailscale.com>
2022-11-11 10:45:47 +05:00
Maisem Ali
4d330bac14 ipn/ipnlocal: add support for multiple user profiles
Signed-off-by: Maisem Ali <maisem@tailscale.com>
2022-11-11 10:45:47 +05:00
Brad Fitzpatrick
da8def8e13 all: remove old +build tags
The //go:build syntax was introduced in Go 1.17:

https://go.dev/doc/go1.17#build-lines

gofmt has kept the +build and go:build lines in sync since
then, but enough time has passed. Time to remove them.

Done with:

    perl -i -npe 's,^// \+build.*\n,,' $(git grep -l -F '+build')

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-11-04 07:25:42 -07:00
Maisem Ali
a413fa4f85 control/controlclient: export NoiseClient
This allows reusing the NoiseClient in other repos without having to reimplement the earlyPayload logic.

Signed-off-by: Maisem Ali <maisem@tailscale.com>
2022-11-04 01:44:43 +05:00
Brad Fitzpatrick
910db02652 client/tailscale, tsnet, ipn/ipnlocal: prove nodekey ownership over noise
Fixes #5972

Change-Id: Ic33a93d3613ac5dbf172d6a8a459ca06a7f9e547
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-11-02 09:22:26 -07:00
Brad Fitzpatrick
988c1f0ac7 control/controlclient, tailcfg: add support for EarlyNoise payload before http/2
Not yet used, but skipped over, parsed, and tested.

Updates #5972

Change-Id: Icd00196959ce266ae16a6c9244bd5e458e2c2947
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-11-01 15:11:22 -07:00
Tom DNetto
d98305c537 cmd,ipn/ipnlocal,tailcfg: implement TKA disablement
* Plumb disablement values through some of the internals of TKA enablement.
 * Transmit the node's TKA hash at the end of sync so the control plane understands each node's head.
 * Implement /machine/tka/disable RPC to actuate disablement on the control plane.

There is a partner PR for the control server I'll send shortly.

Signed-off-by: Tom DNetto <tom@tailscale.com>
2022-10-31 11:05:44 -05:00
Brad Fitzpatrick
231b88cc51 control/controlclient: add start of noise+http2 upgrade test
Basic HTTP/2-over-noise client test. To be fleshed out in subsequent
commits that add more functionality to the noise client.

Updates #5972

Change-Id: I0178343523ef4ae8e8fc87bae53cbc81f4e32fde
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-10-30 05:17:59 -07:00
Brad Fitzpatrick
120bfc97ce control/controlclient: refactor noiseClient, connections, http2
In prep for stateful http2 noise connections.

Updates #5972

Change-Id: I9ebecc3b2d5d193621b87d39b506f231d6c82145
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-10-28 15:49:36 -07:00
Maisem Ali
a2d15924fb types/persist: add PublicNodeKey helper
Signed-off-by: Maisem Ali <maisem@tailscale.com>
2022-10-24 15:57:00 -07:00
Brad Fitzpatrick
246274b8e9 control/controlhttp: allow setting, getting Upgrade headers in Noise upgrade
Not currently used, but will allow us to usually remove a round-trip for
a future feature.

Updates #5972

Change-Id: I2770ea28e3e6ec9626d1cbb505a38ba51df7fba2
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-10-17 15:11:03 -07:00
Tom DNetto
227777154a control/controlclient,ipn/ipnlocal,tailcfg: rotate node-key signature on register
CAPVER 47

Signed-off-by: Tom DNetto <tom@tailscale.com>
2022-10-14 10:23:40 -07:00
Emmanuel T Odeke
680f8d9793 all: fix more resource leaks found by staticmajor
Updates #5706

Signed-off-by: Emmanuel T Odeke <emmanuel@orijtech.com>
2022-10-10 20:46:56 -07:00
Joe Tsai
82f5f438e0
wgengine/wgcfg: plumb down audit log IDs (#5855)
The node and domain audit log IDs are provided in the map response,
but are ultimately going to be used in wgengine since
that's the layer that manages the tstun.Wrapper.

Do the plumbing work to get this field passed down the stack.

Signed-off-by: Joe Tsai <joetsai@digital-static.net>
2022-10-06 16:19:38 -07:00
Josh Soref
d4811f11a0 all: fix spelling mistakes
Signed-off-by: Josh Soref <2119212+jsoref@users.noreply.github.com>
2022-09-29 13:36:13 -07:00
Brad Fitzpatrick
9bdf0cd8cd ipn/ipnlocal: add c2n /debug/{goroutines,prefs,metrics}
* and move goroutine scrubbing code to its own package for reuse
* bump capver to 45

Change-Id: I9b4dfa5af44d2ecada6cc044cd1b5674ee427575
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-09-26 11:16:38 -07:00
Brad Fitzpatrick
8a0cb4ef20 control/controlclient: fix recent set-dns regression
SetDNS calls were broken by 6d04184325 the other day. Unreleased.

Caught by tests in another repo.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-09-25 16:23:55 -07:00
Brad Fitzpatrick
fb4e23506f control/controlclient: stop restarting map polls on health change
At some point we started restarting map polls on health change, but we
don't remember why. Maybe it was a desperate workaround for something.
I'm not sure it ever worked.

Rather than have a haunted graveyard, remove it.

In its place, though, and somewhat as a safety backup, send those
updates over the HTTP/2 noise channel if we have one open. Then if
there was a reason that a map poll restart would help we could do it
server-side. But mostly we can gather error stats and show
machine-level health info for debugging.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-09-24 08:51:34 -07:00
Brad Fitzpatrick
6d04184325 control/controlclient: add a noiseClient.post helper method
In prep for a future change that would've been very copy/paste-y.

And because the set-dns call doesn't currently use a context,
so timeouts/cancelations are plumbed.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-09-23 13:18:22 -07:00
Andrew Dunham
e1bdbfe710
tailcfg, control/controlhttp, control/controlclient: add ControlDialPlan field (#5648)
* tailcfg, control/controlhttp, control/controlclient: add ControlDialPlan field

This field allows the control server to provide explicit information
about how to connect to it; useful if the client's link status can
change after the initial connection, or if the DNS settings pushed by
the control server break future connections.

Change-Id: I720afe6289ec27d40a41b3dcb310ec45bd7e5f3e
Signed-off-by: Andrew Dunham <andrew@tailscale.com>
2022-09-23 13:06:55 -04:00
Tom DNetto
e9b98dd2e1 control/controlclient,ipn/ipnlocal: wire tka enable/disable
Signed-off-by: Tom DNetto <tom@tailscale.com>
2022-09-21 12:57:59 -07:00
Andrew Dunham
9b71008ef2
control/controlhttp: move Dial options into options struct (#5661)
This turns 'dialParams' into something more like net.Dialer, where
configuration fields are public on the struct.

Split out of #5648

Change-Id: I0c56fd151dc5489c3c94fb40d18fd639e06473bc
Signed-off-by: Andrew Dunham <andrew@tailscale.com>
2022-09-16 15:06:25 -04:00
Eng Zer Jun
f0347e841f refactor: move from io/ioutil to io and os packages
The io/ioutil package has been deprecated as of Go 1.16 [1]. This commit
replaces the existing io/ioutil functions with their new definitions in
io and os packages.

Reference: https://golang.org/doc/go1.16#ioutil
Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>
2022-09-15 21:45:53 -07:00
Brad Fitzpatrick
74674b110d envknob: support changing envknobs post-init
Updates #5114

Change-Id: Ia423fc7486e1b3f3180a26308278be0086fae49b
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-09-15 15:04:02 -07:00
Brad Fitzpatrick
45a3de14a6 cmd/tailscaled, tailcfg, hostinfo: add flag to disable logging + support
As noted in #5617, our documented method of blocking log.tailscale.io
DNS no longer works due to bootstrap DNS.

Instead, provide an explicit flag (--no-logs-no-support) and/or env
variable (TS_NO_LOGS_NO_SUPPORT=true) to explicitly disable logcatcher
uploads. It also sets a bit on Hostinfo to say that the node is in that
mode so we can end any support tickets from such nodes more quickly.

This does not yet provide an easy mechanism for users on some
platforms (such as Windows, macOS, Synology) to set flags/env. On
Linux you'd used /etc/default/tailscaled typically. Making it easier
to set flags for other platforms is tracked in #5114.

Fixes #5617
Fixes tailscale/corp#1475

Change-Id: I72404e1789f9e56ec47f9b7021b44c025f7a373a
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-09-13 11:47:36 -07:00
Brad Fitzpatrick
c66f99fcdc tailcfg, control/controlclient, ipn/ipnlocal: add c2n (control-to-node) system
This lets the control plane can make HTTP requests to nodes.

Then we can use this for future things rather than slapping more stuff
into MapResponse, etc.

Change-Id: Ic802078c50d33653ae1f79d1e5257e7ade4408fd
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-08-29 15:18:40 -07:00
Tom DNetto
18edd79421 control/controlclient,tailcfg: [capver 40] create KeySignature field in tailcfg.Node
We calve out a space to put the node-key signature (used on tailnets where network lock is enabled).

Signed-off-by: Tom DNetto <tom@tailscale.com>
2022-08-22 11:25:41 -07:00
Juan Font Alonso
64d482ff48 Allow any port for HTTPS when using Noise over TLS
Signed-off-by: Juan Font Alonso <juanfontalonso@gmail.com>
2022-08-15 06:43:43 -07:00
Brad Fitzpatrick
90555c5cb2 tailcfg, control/controlclient: add PingRequest.URLIsNoise [capver 38]
Change-Id: I19bb63b6d99e96b2f9fd2c440afcc31d38137ded
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-08-11 09:41:06 -07:00