Commit Graph

906 Commits (a56e58c244994d81411de5caf92772695f9dab1e)

Author SHA1 Message Date
James Tucker 84acf83019 go.mod,net/dnsfallback: bump go4.org/netipx
Updates #8043
Signed-off-by: James Tucker <james@tailscale.com>
9 months ago
Andrea Barisani b5b4298325 go.mod,*: bump gvisor
Updates #9253

Signed-off-by: Andrea Barisani <andrea@inversepath.com>
Signed-off-by: James Tucker <james@tailscale.com>
9 months ago
Andrew Dunham d31460f793 net/portmapper: fix invalid UPnP metric name
Fixes #9551

Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: I06f3a15a668be621675be6cbc7e5bdcc006e8570
9 months ago
Val c608660d12 wgengine,net,ipn,disco: split up and define different types of MTU
Prepare for path MTU discovery by splitting up the concept of
DefaultMTU() into the concepts of the Tailscale TUN MTU, MTUs of
underlying network interfaces, minimum "safe" TUN MTU, user configured
TUN MTU, probed path MTU to a peer, and maximum probed MTU. Add a set
of likely MTUs to probe.

Updates #311

Signed-off-by: Val <valerie@tailscale.com>
9 months ago
Andrew Dunham 530aaa52f1 net/dns: retry forwarder requests over TCP
We weren't correctly retrying truncated requests to an upstream DNS
server with TCP. Instead, we'd return a truncated request to the user,
even if the user was querying us over TCP and thus able to handle a
large response.

Also, add an envknob and controlknob to allow users/us to disable this
behaviour if it turns out to be buggy ( DNS ).

Updates #9264

Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: Ifb04b563839a9614c0ba03e9c564e8924c1a2bfd
9 months ago
Brad Fitzpatrick 241c983920 net/tstun: use untyped consts, simplify DefaultMTU func
Updates #cleanup

Change-Id: Ic9ad1d6134818699f777c66a31024e846dfdc5d4
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
9 months ago
Brad Fitzpatrick 3b32d6c679 wgengine/magicsock, controlclient, net/dns: reduce some logspam
Updates #cleanup

Change-Id: I78b0697a01e94baa33f3de474b591e616fa5e6af
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
9 months ago
Val 6cc5b272d8 Revert "wgengine,net,ipn,disco: split up and define different types of MTU"
This reverts commit 059051c58a.

Signed-off-by: Val <valerie@tailscale.com>
9 months ago
Val 059051c58a wgengine,net,ipn,disco: split up and define different types of MTU
Prepare for path MTU discovery by splitting up the concept of
DefaultMTU() into the concepts of the Tailscale TUN MTU, MTUs of
underlying network interfaces, minimum "safe" TUN MTU, user configured
TUN MTU, probed path MTU to a peer, and maximum probed MTU. Add a set
of likely MTUs to probe.

Updates #311

Signed-off-by: Val <valerie@tailscale.com>
9 months ago
James Tucker 1c88a77f68 net/dns/publicdns: update Quad9 addresses and references
One Quad9 IPv6 address was incorrect, and an additional group needed
adding. Additionally I checked Cloudflare and included source reference
URLs for both.

Updates #cleanup
Signed-off-by: James Tucker <james@tailscale.com>
9 months ago
Maisem Ali 3056a98bbd net/tstun: add better logging of natV4Config
It might as well have been spewing out gibberish. This adds
a nicer output format for us to be able to read and identify
whats going on.

Sample output
```
natV4Config{nativeAddr: 100.83.114.95, listenAddrs: [10.32.80.33], dstMasqAddrs: [10.32.80.33: 407 peers]}
```

Fixes tailscale/corp#14650

Signed-off-by: Maisem Ali <maisem@tailscale.com>
9 months ago
Tom DNetto c08cf2a9c6 all: declare & plumb IPv6 masquerade address for peer
This PR plumbs through awareness of an IPv6 SNAT/masquerade address from the wire protocol
through to the low-level (tstun / wgengine). This PR is the first in two PRs for implementing
IPv6 NAT support to/from peers.

A subsequent PR will implement the data-plane changes to implement IPv6 NAT - this is just plumbing.

Signed-off-by: Tom DNetto <tom@tailscale.com>
Updates ENG-991
9 months ago
Andrew Dunham d9ae7d670e net/portmapper: add clientmetric for UPnP error codes
This should allow us to gather a bit more information about errors that
we encounter when creating UPnP mappings. Since we don't have a
"LabelMap" construction for clientmetrics, do what sockstats does and
lazily register a new metric when we see a new code.

Updates #9343

Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: Ibb5aadd6138beb58721f98123debcc7273b611ba
9 months ago
Brad Fitzpatrick 0d991249e1 types/netmap: remove NetworkMap.{Addresses,MachineStatus}
And convert all callers over to the methods that check SelfNode.

Now we don't have multiple ways to express things in tests (setting
fields on SelfNode vs NetworkMap, sometimes inconsistently) and don't
have multiple ways to check those two fields (often only checking one
or the other).

Updates #9443

Change-Id: I2d7ba1cf6556142d219fae2be6f484f528756e3c
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
9 months ago
Brad Fitzpatrick 926c990a09 types/netmap: start phasing out Addresses, add GetAddresses method
NetworkMap.Addresses is redundant with the SelfNode.Addresses. This
works towards a TODO to delete NetworkMap.Addresses and replace it
with a method.

This is similar to #9389.

Updates #cleanup

Change-Id: Id000509ca5d16bb636401763d41bdb5f38513ba0
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
9 months ago
James Tucker 8ab46952d4 net/ping: fix ICMP echo code field to 0
The code was trying to pass the ICMP protocol number here (1), which is
not a valid code. Many servers will not respond to echo messages with
codes other than 0.

https://www.iana.org/assignments/icmp-parameters/icmp-parameters.xhtml#icmp-parameters-codes-8

Updates #9299
Signed-off-by: James Tucker <james@tailscale.com>
10 months ago
James Tucker 4c693d2ee8 net/dns/publicdns: update Mullvad DoH server list
The following IPs are not used anymore: 193.19.108.2 and 193.19.108.3.
All of the servers are now named consistently under dns.mullvad.net.
Several new servers were added.

https://mullvad.net/en/help/dns-over-https-and-dns-over-tls/

Updates #5416
Updates #9345

Signed-off-by: James Tucker <james@tailscale.com>
10 months ago
Andrew Dunham ad4c11aca1 net/netmon: log when the gateway/self IP changes
This logs that the gateway/self IP address has changed if one of the new
values differs.

Updates #8992

Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: I0919424b68ad97fbe1204dd36317ed6f5915411f
10 months ago
Andrew Dunham 9ee173c256 net/portmapper: fall back to permanent UPnP leases if necessary
Some routers don't support lease times for UPnP portmapping; let's fall
back to adding a permanent lease in these cases. Additionally, add a
proper end-to-end test case for the UPnP portmapping behaviour.

Updates #9343

Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: I17dec600b0595a5bfc9b4d530aff6ee3109a8b12
10 months ago
Brad Fitzpatrick 4e91cf20a8 control/controlknobs, all: add plumbed Knobs type, not global variables
Previously two tsnet nodes in the same process couldn't have disjoint
sets of controlknob settings from control as both would overwrite each
other's global variables.

This plumbs a new controlknobs.Knobs type around everywhere and hangs
the knobs sent by control on that instead.

Updates #9351

Change-Id: I75338646d36813ed971b4ffad6f9a8b41ec91560
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
10 months ago
Brad Fitzpatrick dc7aa98b76 all: use set.Set consistently instead of map[T]struct{}
I didn't clean up the more idiomatic map[T]bool with true values, at
least yet.  I just converted the relatively awkward struct{}-valued
maps.

Updates #cleanup

Change-Id: I758abebd2bb1f64bc7a9d0f25c32298f4679c14f
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
10 months ago
Andrew Dunham d413dd7ee5 net/dns/publicdns: add support for Wikimedia DNS
RELNOTE=Adds support for Wikimedia DNS

Updates #9255

Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: I4213c29e0f91ea5aa0304a5a026c32b6690fead9
10 months ago
Brad Fitzpatrick 1262df0578 net/netmon, net/tsdial: add some link change metrics
Updates #9040

Change-Id: I2c87572d79d2118bcf1f0122eccfe712c1bea9d5
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
10 months ago
Brad Fitzpatrick 8b3ea13af0 net/tsdial: be smarter about when to close SystemDial conns
It was too aggressive before, as it only had the ill-defined "Major"
bool to work with. Now it can check more precisely.

Updates #9040

Change-Id: I20967283b64af6a9cad3f8e90cff406de91653b8
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
10 months ago
Andrea Barisani 0a74d46568 adjust build tags for tamago
Signed-off-by: Andrea Barisani <andrea@inversepath.com>
10 months ago
David Anderson 8b492b4121 net/wsconn: accept a remote addr string and plumb it through
This makes wsconn.Conns somewhat present reasonably when they are
the client of an http.Request, rather than just put a placeholder
in that field.

Updates tailscale/corp#13777

Signed-off-by: David Anderson <danderson@tailscale.com>
10 months ago
Brad Fitzpatrick 11ece02f52 net/{interfaces,netmon}: remove "interesting", EqualFiltered API
This removes a lot of API from net/interfaces (including all the
filter types, EqualFiltered, active Tailscale interface func, etc) and
moves the "major" change detection to net/netmon which knows more
about the world and the previous/new states.

Updates #9040

Change-Id: I7fe66a23039c6347ae5458745b709e7ebdcce245
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
10 months ago
Joe Tsai fcbb2bf348
net/memnet: export the network name (#9111)
This makes it more maintainable for other code to statically depend
on the exact value of this string. It also makes it easier to
identify what code might depend on this string by looking up
references to this constant.

Updates tailscale/corp#13777

Signed-off-by: Joe Tsai <joetsai@digital-static.net>
10 months ago
Andrew Dunham c86a610eb3 cmd/tailscale, net/portmapper: add --log-http option to "debug portmap"
This option allows logging the raw HTTP requests and responses that the
portmapper Client makes when using UPnP. This can be extremely helpful
when debugging strange UPnP issues with users' devices, and might allow
us to avoid having to instruct users to perform a packet capture.

Updates #8992

Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: I2c3cf6930b09717028deaff31738484cc9b008e4
10 months ago
Brad Fitzpatrick 98a5116434 all: adjust some build tags for plan9
I'm not saying it works, but it compiles.

Updates #5794

Change-Id: I2f3c99732e67fe57a05edb25b758d083417f083e
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
10 months ago
Brad Fitzpatrick d58ba59fd5 cmd/tailscale/cli: make netcheck run even if machine lacks TLS certs
We have a fancy package for doing TLS cert validation even if the machine
doesn't have TLS certs (for LetsEncrypt only) but the CLI's netcheck command
wasn't using it.

Also, update the tlsdial's outdated package docs while here.

Updates #cleanup

Change-Id: I74b3cb645d07af4d8ae230fb39a60c809ec129ad
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
10 months ago
Brad Fitzpatrick e881c1caec net/netmon: factor out debounce loop, simplify polling impl
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>
10 months ago
Brad Fitzpatrick 9089efea06 net/netmon: make ChangeFunc's signature take new ChangeDelta, not bool
Updates #9040

Change-Id: Ia43752064a1a6ecefc8802b58d6eaa0b71cf1f84
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
10 months ago
Andrew Dunham 77ff705545 net/portmapper: never select port 0 in UPnP
Port 0 is interpreted, per the spec (but inconsistently among router
software) as requesting to map every single available port on the UPnP
gateway to the internal IP address. We'd previously avoided picking
ports below 1024 for one of the two UPnP methods (in #7457), and this
change moves that logic so that we avoid it in all cases.

Updates #8992

Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: I20d652c0cd47a24aef27f75c81f78ae53cc3c71e
10 months ago
Brad Fitzpatrick 58a4fd43d8 types/netmap, all: use read-only tailcfg.NodeView in NetworkMap
Updates #8948

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
10 months ago
Brad Fitzpatrick 6e57dee7eb cmd/viewer, types/views, all: un-special case slice of netip.Prefix
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>
10 months ago
David Anderson e92adfe5e4 net/art: allow non-pointers as values
Values are still turned into pointers internally to maintain the
invariants of strideTable, but from the user's perspective it's
now possible to tbl.Insert(pfx, true) rather than
tbl.Insert(pfx, ptr.To(true)).

Updates #7781

Signed-off-by: David Anderson <danderson@tailscale.com>
11 months ago
Brad Fitzpatrick e8551d6b40 all: use Go 1.21 slices, maps instead of x/exp/{slices,maps}
Updates #8419

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
11 months ago
David Anderson 623d72c83b net/art: move child table pointers out of strideEntry
In preparation for a different refactor, but incidentally also saves
10-25% memory on overall table size in benchmarks.

Updates #7781

Signed-off-by: David Anderson <danderson@tailscale.com>
11 months ago
James Tucker de8e55fda6 net/netcheck,wgengine/magicsock: reduce coupling between netcheck and magicsock
Netcheck no longer performs I/O itself, instead it makes requests via
SendPacket and expects users to route reply traffic to
ReceiveSTUNPacket.

Netcheck gains a Standalone function that stands up sockets and
goroutines to implement I/O when used in a standalone fashion.

Magicsock now unconditionally routes STUN traffic to the netcheck.Client
that it hosts, and plumbs the send packet sink.

The CLI is updated to make use of the Standalone mode.

Fixes #8723

Signed-off-by: James Tucker <james@tailscale.com>
11 months ago
Maisem Ali 98ec8924c2 ipn/ipnlocal,net/tsdial: update docs/rename funcs
Updates #cleanup

Signed-off-by: Maisem Ali <maisem@tailscale.com>
11 months ago
Will Norris 69f1324c9e cmd/tailscale: refactor shared utility methods
Refactor two shared functions used by the tailscale cli,
calcAdvertiseRoutes and licensesURL. These are used by the web client as
well as other tailscale subcommands. The web client is being moved out
of the cli package, so move these two functions to new locations.

Updates tailscale/corp#13775

Signed-off-by: Will Norris <will@tailscale.com>
11 months ago
Brad Fitzpatrick be4eb6a39e derp, net/dns/recursive: use Go 1.21 min
Updates #8419

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
11 months ago
Brad Fitzpatrick 66e46bf501 ipnlocal, net/*: deprecate interfaces.GetState, use netmon more for it
Updates #cleanup

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
11 months ago
David Anderson 52212f4323 all: update exp/slices and fix call sites
slices.SortFunc suffered a late-in-cycle API breakage.

Updates #cleanup

Signed-off-by: David Anderson <danderson@tailscale.com>
11 months ago
David Anderson 6afffece8a net/art: use more intelligible, go-ish state tracking in table.Get
Updates #7781

Signed-off-by: David Anderson <danderson@tailscale.com>
11 months ago
David Anderson 4f14ed2ad6 net/art: use encoding/binary for address bit twiddling
Updates #7781

Signed-off-by: David Anderson <danderson@tailscale.com>
11 months ago
David Anderson f1cd67488d net/art: move slice closer to its use
Updates #7781

Signed-off-by: David Anderson <danderson@tailscale.com>
11 months ago
David Anderson 44ad7b3746 net/art: factor out picking the right strideTable for addr family
Updates #7781

Signed-off-by: David Anderson <danderson@tailscale.com>
11 months ago
David Anderson 125b982ba5 net/art: make Table.Get alloc-free
Updates #7781

Signed-off-by: David Anderson <danderson@tailscale.com>
11 months ago