This gauge will be reworked to include endpoint state in future.
Updates tailscale/corp#30820
Change-Id: I66f349d89422b46eec4ecbaf1a99ad656c7301f9
Signed-off-by: Alex Valiushko <alexvaliushko@tailscale.com>
Adding both user and client metrics for peer relay forwarded bytes and
packets, and the total endpoints gauge.
User metrics:
tailscaled_peer_relay_forwarded_packets_total{transport_in, transport_out}
tailscaled_peer_relay_forwarded_bytes_total{transport_in, transport_out}
tailscaled_peer_relay_endpoints_total{}
Where the transport labels can be of "udp4" or "udp6".
Client metrics:
udprelay_forwarded_(packets|bytes)_udp(4|6)_udp(4|6)
udprelay_endpoints
RELNOTE: Expose tailscaled metrics for peer relay.
Updates tailscale/corp#30820
Change-Id: I1a905d15bdc5ee84e28017e0b93210e2d9660259
Signed-off-by: Alex Valiushko <alexvaliushko@tailscale.com>
When the TS_DEBUG_DNS_FORWARD_SEND envknob is turned on, also log the
source IP:port of the query that tailscaled is forwarding.
Updates tailscale/corp#35374
Signed-off-by: Andrew Dunham <andrew@tailscale.com>
updates tailscale/corp#33891
Addresses several older the TODO's in netmon. This removes the
Major flag precomputes the ChangeDelta state, rather than making
consumers of ChangeDeltas sort that out themselves. We're also seeing
a lot of ChangeDelta's being flagged as "Major" when they are
not interesting, triggering rebinds in wgengine that are not needed. This
cleans that up and adds a host of additional tests.
The dependencies are cleaned, notably removing dependency on netmon
itself for calculating what is interesting, and what is not. This includes letting
individual platforms set a bespoke global "IsInterestingInterface"
function. This is only used on Darwin.
RebindRequired now roughly follows how "Major" was historically
calculated but includes some additional checks for various
uninteresting events such as changes in interface addresses that
shouldn't trigger a rebind. This significantly reduces thrashing (by
roughly half on Darwin clients which switching between nics). The individual
values that we roll into RebindRequired are also exposed so that
components consuming netmap.ChangeDelta can ask more
targeted questions.
Signed-off-by: Jonathan Nobels <jonathan@tailscale.com>
This commit also introduces a sync.Mutex for guarding mutatable fields
on serverEndpoint, now that it is no longer guarded by the sync.Mutex
in Server.
These changes reduce lock contention and by effect increase aggregate
throughput under high flow count load. A benchmark on Linux with AWS
c8gn instances showed a ~30% increase in aggregate throughput (37Gb/s
vs 28Gb/s) for 12 tailscaled flows.
Updates tailscale/corp#35264
Signed-off-by: Jordan Whited <jordan@tailscale.com>
When receiving a TSMPDiscoAdvertisement from peer, update the discokey
for said peer.
Some parts taken from: https://github.com/tailscale/tailscale/pull/18073/
Updates #12639
Co-authored-by: James Tucker <james@tailscale.com>
When using the resolve.conf file for setting DNS, it is possible that
some other services will trample the file and overwrite our set DNS
server. Experiments has shown this to be a racy error depending on how
quickly processes start.
Make an attempt to trample back the file a limited number of times if
the file is changed.
Updates #16635
Signed-off-by: Claus Lensbøl <claus@tailscale.com>
This commit uses SO_REUSEPORT (when supported) to bind multiple sockets
per address family. Increasing the number of sockets can increase
aggregate throughput when serving many peer relay client flows.
Benchmarks show 3x improvement in max aggregate bitrate in some
environments.
Updates tailscale/corp#34745
Signed-off-by: Jordan Whited <jordan@tailscale.com>
In preparation for exposing its configuration via ipn.ConfigVAlpha,
change {Masked}Prefs.RelayServerPort from *int to *uint16. This takes a
defensive stance against invalid inputs at JSON decode time.
'tailscale set --relay-server-port' is currently the only input to this
pref, and has always sanitized input to fit within a uint16.
Updates tailscale/corp#34591
Signed-off-by: Jordan Whited <jordan@tailscale.com>
Adds a new types of TSMP messages for advertising disco keys keys
to/from a peer, and implements the advertising triggered by a TSMP ping.
Needed as part of the effort to cache the netmap and still let clients
connect without control being reachable.
Updates #12639
Signed-off-by: Claus Lensbøl <claus@tailscale.com>
Co-authored-by: James Tucker <james@tailscale.com>
This commit replaces crypto/rand challenge generation with a blake2s-256
MAC. This enables the peer relay server to respond to multiple forward
disco.BindUDPRelayEndpoint messages per handshake generation without
sacrificing the proof of IP ownership properties of the handshake.
Responding to multiple forward disco.BindUDPRelayEndpoint messages per
handshake generation improves client address/path selection where
lowest client->server path/addr one-way delay does not necessarily
equate to lowest client<->server round trip delay.
It also improves situations where outbound traffic is filtered
independent of input, and the first reply
disco.BindUDPRelayEndpointChallenge message is dropped on the reply
path, but a later reply using a different source would make it through.
Reduction in serverEndpoint state saves 112 bytes per instance, trading
for slightly more expensive crypto ops: 277ns/op vs 321ns/op on an M1
Macbook Pro.
Updates tailscale/corp#34414
Signed-off-by: Jordan Whited <jordan@tailscale.com>
fixestailscale/tailscale#17990
The logging for the netns caps is spammy. Log only on changes
to the values and don't log Darwin specific stuff on non Darwin
clients.
Signed-off-by: Jonathan Nobels <jonathan@tailscale.com>
This commit enables user to set service backend to remote destinations, that can be a partial
URL or a full URL. The commit also prevents user to set remote destinations on linux system
when socket mark is not working. For user on any version of mac extension they can't serve a
service either. The socket mark usability is determined by a new local api.
Fixestailscale/corp#24783
Signed-off-by: KevinLiang10 <37811973+KevinLiang10@users.noreply.github.com>
Pick up a fix for https://pkg.go.dev/vuln/GO-2025-4116 (even though
we're not affected).
Updates #cleanup
Change-Id: I9f2571b17c1f14db58ece8a5a34785805217d9dd
Signed-off-by: Andrew Lytvynov <awly@tailscale.com>
LinkChangeLogLimiter keeps a subscription to track rate limits for log
messages. But when its context ended, it would exit the subscription loop,
leaving the subscriber still alive. Ensure the subscriber gets cleaned up
when the context ends, so we don't stall event processing.
Updates tailscale/corp#34311
Change-Id: I82749e482e9a00dfc47f04afbc69dd0237537cb2
Signed-off-by: M. J. Fromberger <fromberger@tailscale.com>
This commit replaces usage of local.Client in net/udprelay with DERPMap
plumbing over the eventbus. This has been a longstanding TODO. This work
was also accelerated by a memory leak in net/http when using
local.Client over long periods of time. So, this commit also addresses
said leak.
Updates #17801
Signed-off-by: Jordan Whited <jordan@tailscale.com>
updates tailscale/corp#31571
It appears that on the latest macOS, iOS and tVOS versions, the work
that netns is doing to bind outgoing connections to the default interface (and all
of the trimmings and workarounds in netmon et al that make that work) are
not needed. The kernel is extension-aware and doing nothing, is the right
thing. This is, however, not the case for tailscaled (which is not a
special process).
To allow us to test this assertion (and where it might break things), we add a
new node cap that turns this behaviour off only for network-extension equipped clients,
making it possible to turn this off tailnet-wide, without breaking any tailscaled
macos nodes.
Signed-off-by: Jonathan Nobels <jonathan@tailscale.com>
Use GetGlobalAddrs() to discover all STUN endpoints, handling bad NATs
that create multiple mappings. When MappingVariesByDestIP is true, also
add the first STUN IPv4 address with the relay's local port for static
port mapping scenarios.
Updates #17796
Signed-off-by: Raj Singh <raj@tailscale.com>
This rewrites the netlog package to support embedding node information in network flow logs.
Some bit of complexity comes in trying to pre-compute the expected size of the log message
after JSON serialization to ensure that we can respect maximum body limits in log uploading.
We also fix a bug in tstun, where we were recording the IP address after SNAT,
which was resulting in non-sensible connection flows being logged.
Updates tailscale/corp#33352
Signed-off-by: Joe Tsai <joetsai@digital-static.net>
Merge the connstats package into the netlog package
and unexport all of its declarations.
Remove the buildfeatures.HasConnStats and use HasNetLog instead.
Updates tailscale/corp#33352
Signed-off-by: Joe Tsai <joetsai@digital-static.net>
The connstats package was an unnecessary layer of indirection.
It was seperated out of wgengine/netlog so that net/tstun and
wgengine/magicsock wouldn't need a depenedency on the concrete
implementation of network flow logging.
Instead, we simply register a callback for counting connections.
This PR does the bare minimum work to prepare tstun and magicsock
to only care about that callback.
A future PR will delete connstats and merge it into netlog.
Updates tailscale/corp#33352
Signed-off-by: Joe Tsai <joetsai@digital-static.net>
Before synctest, timers was needed to allow the events to flow into the
test bus. There is still a timer, but this one is not derived from the
test deadline and it is mostly arbitrary as synctest will render it
practically non-existent.
With this approach, tests that do not need to test for the absence of
events do not rely on synctest.
Updates #15160
Signed-off-by: Claus Lensbøl <claus@tailscale.com>
The default representation of time.Duration has different
JSON representation between v1 and v2.
Apply an explicit format flag that uses the v1 representation
so that this behavior does not change if serialized with v2.
Updates tailscale/corp#791
Signed-off-by: Joe Tsai <joetsai@digital-static.net>
updates tailscale/tailscale#16836
Android's altNetInterfaces implementation now returns net.IPAddr
types which netmon wasn't handling.
Signed-off-by: Jonathan Nobels <jonathan@tailscale.com>
The lazy init led to confusion and a belief that was something was
wrong. It's reasonable to expect the daemon to listen on the port at the
time it's configured.
Updates tailscale/corp#33094
Signed-off-by: Jordan Whited <jordan@tailscale.com>
I got sidetracked apparently and never finished writing this Clone
code in 316afe7d02 (#17448). (It really should use views instead.)
And then I missed one of the users of "routerChanged" that was broken up
into "routerChanged" vs "dnsChanged".
This broke integration tests elsewhere.
Fixes#17506
Change-Id: I533bf0fcf3da9ac6eb4a6cdef03b8df2c1fb4c8e
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Part of making all netlink monitoring code optional.
Updates #17311 (how I got started down this path)
Updates #12614
Change-Id: Ic80d8a7a44dc261c4b8678b3c2241c3b3778370d
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Saves 45 KB from the min build, no longer pulling in deephash or
util/hashx, both with unsafe code.
It can actually be more efficient to not use deephash, as you don't
have to walk all bytes of all fields recursively to answer that two
things are not equal. Instead, you can just return false at the first
difference you see. And then with views (as we use ~everywhere
nowadays), the cloning the old value isn't expensive, as it's just a
pointer under the hood.
Updates #12614
Change-Id: I7b08616b8a09b3ade454bb5e0ac5672086fe8aec
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Saves ~102 KB from the min build.
Updates #12614
Change-Id: Ie1d4f439321267b9f98046593cb289ee3c4d6249
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Due to iOS memory limitations in 2020 (see
https://tailscale.com/blog/go-linker, etc) and wireguard-go using
multiple goroutines per peer, commit 16a9cfe2f4 introduced some
convoluted pathsways through Tailscale to look at packets before
they're delivered to wireguard-go and lazily reconfigure wireguard on
the fly before delivering a packet, only telling wireguard about peers
that are active.
We eventually want to remove that code and integrate wireguard-go's
configuration with Tailscale's existing netmap tracking.
To make it easier to find that code later, this makes it modular. It
saves 12 KB (of disk) to turn it off (at the expense of lots of RAM),
but that's not really the point. The point is rather making it obvious
(via the new constants) where this code even is.
Updates #12614
Change-Id: I113b040f3e35f7d861c457eaa710d35f47cee1cb
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Explain that this file stays forked from coder/websocket until we can
depend on an upstream release for the helper.
Updates #cleanup
Signed-off-by: kscooo <kscowork@gmail.com>
Saves only 12 KB, but notably removes some deps on packages that future
changes can then eliminate entirely.
Updates #12614
Change-Id: Ibf830d3ee08f621d0a2011b1d4cd175427ef50df
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Saves 262 KB so far. I'm sure I missed some places, but shotizam says
these were the low hanging fruit.
Updates #12614
Change-Id: Ia31c01b454f627e6d0470229aae4e19d615e45e3
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Saves 352 KB, removing one of our two HTTP/2 implementations linked
into the binary.
Fixes#17305
Updates #15015
Change-Id: I53a04b1f2687dca73c8541949465038b69aa6ade
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Anton Tolchanov
Jordan Whited
Andrew Dunham
Alex Valiushko
Jonathan Nobels
Claus Lensbøl
Simar
Jonathan Nobels
Brad Fitzpatrick
KevinLiang10
Alex Chan
Andrew Lytvynov
M. J. Fromberger
Sachin Iyer
Raj Singh
Joe Tsai
kscooo