This simplifies some netmon code in prep for other changes.
It breaks up Monitor.debounce into a helper method so locking is
easier to read and things unindent, and then it simplifies the polling
netmon implementation to remove the redundant stuff that the caller
(the Monitor.debounce loop) was already basically doing.
Updates #9040
Change-Id: Idcfb45201d00ae64017042a7bdee6ef86ad37a9f
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Actually fixed in 77ff705545 but that was cherry-picked to a branch
and we don't bump capver in branches.
This tells the control plane that UPnP should be re-enabled going
forward.
Updates #8992
Change-Id: I5c4743eb52fdee94175668c368c0f712536dc26b
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Upcoming work on incremental netmap change handling will require some
replumbing of which subsystems get notified about what. Done naively,
it could break "tailscale status --json" visibility later. To make sure
I understood the flow of all the updates I was rereading the status code
and realized parts of ipnstate.Status were being populated by the wrong
subsystems.
The engine (wireguard) and magicsock (data plane, NAT traveral) should
only populate the stuff that they uniquely know. The WireGuard bits
were fine but magicsock was populating stuff stuff that LocalBackend
could've better handled, so move it there.
Updates #1909
Change-Id: I6d1b95d19a2d1b70fbb3c875fac8ea1e169e8cb0
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
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>
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>
And flesh it out and use idiomatic doc style ("whether" for bools)
and end in a period while there anyway.
Updates #cleanup
Change-Id: Ieb82f13969656e2340c3510e7b102dc8e6932611
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
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>
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>
I screwed this up in 58a4fd43d as I expected. I even looked out for
cases like this (because this always happens) and I still missed
it. Vet doesn't flag these because they're not the standard printf
funcs it knows about. TODO: make our vet recognize all our
"logger.Logf" types.
Updates #8948
Change-Id: Iae267d5f81da49d0876b91c0e6dc451bf7dcd721
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
I'd added a test case of deephash against a tailcfg.Node to make sure
it worked at all more than anything. We don't care what the exact
bytes are in this test, just that it doesn't fail. So adjust for that.
Then when we make changes to tailcfg.Node and types under it, we don't
need to keep adjusting this test.
Updates #cleanup
Change-Id: Ibf4fa42820aeab8f5292fe65f9f92ffdb0b4407b
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
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>
Make it just a views.Slice[netip.Prefix] instead of its own named type.
Having the special case led to circular dependencies in another WIP PR
of mine.
Updates #8948
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This is basically https://github.com/bradfitz/iter which was
a joke but now that Go's adding range over int soonish, might
as well. It simplies our code elsewher that uses slice views.
Updates #8948
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
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>
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>
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>
This removes the unsafe/linkname and only uses the standard library.
It's a bit slower, for now, but https://go.dev/cl/518336 should get us
back.
On darwin/arm64, without https://go.dev/cl/518336
pkg: tailscale.com/tstime/mono
│ before │ after │
│ sec/op │ sec/op vs base │
MonoNow-8 16.20n ± 0% 19.75n ± 0% +21.92% (p=0.000 n=10)
TimeNow-8 39.46n ± 0% 39.40n ± 0% -0.16% (p=0.002 n=10)
geomean 25.28n 27.89n +10.33%
And with it,
MonoNow-8 16.34n ± 1% 16.93n ± 0% +3.67% (p=0.001 n=10)
TimeNow-8 39.55n ± 15% 38.46n ± 1% -2.76% (p=0.000 n=10)
geomean 25.42n 25.52n +0.41%
Updates #8839
Updates tailscale/go#70
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Go style is for error variables to start with "err" (or "Err")
and for error types to end in "Error".
Updates #cleanup
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Rather than make each ipn.StateStore implementation guard against
useless writes (a write of the same value that's already in the
store), do writes via a new wrapper that has a fast path for the
unchanged case.
This then fixes profileManager's flood of useless writes to AWS SSM,
etc.
Updates #8785
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Like net/http.Server.BaseContext, this lets callers specify a base
context for dials.
Updates tailscale/corp#12702
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
The util/linuxfw/iptables.go had a bunch of code that wasn't yet used
(in prep for future work) but because of its imports, ended up
initializing code deep within gvisor that panicked on init on arm64
systems not using 4KB pages.
This deletes the unused code to delete the imports and remove the
panic. We can then cherry-pick this back to the branch and restore it
later in a different way.
A new test makes sure we don't regress in the future by depending on
the panicking package in question.
Fixes#8658
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
We were storing a lot of "ExitNodeFilteredSet":null in the database.
Updates tailscale/corp#1818 (found in the process)
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
The server hasn't sent it in ages.
Updates #cleanup
Change-Id: I9695ab0f074ec6fb006e11faf3cdfc5ca049fbf8
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
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>
Also fix a js/wasm issue with tsnet in the process. (same issue as WASI)
Updates #8320Fixes#8315
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
58ab66ec51 added LDAP support
for #4945 by shelling out to getdent.
It was supposed to fall back to the old method when getdent wasn't
found, but some variable name confusion (uid vs username) meant the
old path wasn't calling the right lookup function (user.LookupId
instead of user.Lookup).
Which meant that changed probably also broke FreeBSD and macOS SSH
support in addition to the reported OpenWRT regression.
The gokrazy support didn't look right either.
Fixes#8180
Change-Id: I273bbe96fe98b2517fbf0335fd476b483c051554
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
The client/tailscale is a stable-ish API we try not to break. Revert
the Client.CreateKey method as it was and add a new
CreateKeyWithExpiry method to do the new thing. And document the
expiry field and enforce that the time.Duration can't be between in
range greater than 0 and less than a second.
Updates #7143
Updates #8124 (reverts it, effectively)
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
We have two other types of Sets here. Add the basic obvious one too.
Needed for a change elsewhere.
Updates #cleanup
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
I noticed cmd/{cloner,viewer} didn't support structs with embedded
fields while working on a change in another repo. This adds support.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
The previous commit 58ab66e added ssh/tailssh/user.go as part of
working on #4945. So move some more user-related code over to it.
Updates #cleanup
Change-Id: I24de66df25ffb8f867e1a0a540d410f9ef16d7b0
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
It was supposed to be best effort but in some cases (macsys at least,
per @marwan-at-work) it hangs and exhausts the whole context.Context
deadline so we fail to make the SetDNS call to the server.
Updates #8067
Updates #3273 etc
Change-Id: Ie1f04abe9689951484748aecdeae312afbafdb0f
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This is part of an effort to clean up tailscaled initialization between
tailscaled, tailscaled Windows service, tsnet, and the mac GUI.
Updates #8036
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This holds back gvisor, kubernetes, goreleaser, and esbuild, which all
had breaking API changes.
Updates #8043
Updates #7381
Updates #8042 (updates u-root which adds deps)
Change-Id: I889759bea057cd3963037d41f608c99eb7466a5b
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Looks like on some systems there's an IPv6 address, but then opening
a IPv6 UDP socket fails later. Probably some firewall. Tolerate it
better and don't crash.
To repro: check the "udp6" to something like "udp7" (something that'll
fail) and run "go run ./cmd/tailscale netcheck" on a machine with
active IPv6. It used to crash and now it doesn't.
Fixes#7949
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
TestMonitorMode skips by default, without the --monitor flag, and then
it previously ran forever. This adds an option --monitor-duration flag
that defaults to zero (run forever) but if non-zero bounds how long
the tests runs. This means you can then also use e.g. `go test
--cpuprofile` and capture a CPU/mem profile for a minute or two.
Updates #7621
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This is a continuation of the earlier 2a67beaacf but more aggressive;
this now remembers that we failed to find the "home" router IP so we
don't try again later on the next call.
Updates #7621
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
The comment still said *magicsock.Conn implemented wireguard-go conn.Bind.
That wasn't accurate anymore.
A doc #cleanup.
Change-Id: I7fd003b939497889cc81147bfb937b93e4f6865c
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
So we're staying within the netip.Addr/AddrPort consistently and
avoiding allocs/conversions to the legacy net addr types.
Updates #5162
Change-Id: I59feba60d3de39f773e68292d759766bac98c917
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
To get the tree green again for other people.
Updates #7866
Change-Id: Ibdad2e1408e5f0c97e49a148bfd77aad17c2c5e5
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
