tailscale

Commit Graph

Author	SHA1	Message	Date
Jordan Whited	8b47322acc	wgengine/magicsock: implement probing of UDP path lifetime (#10844 ) This commit implements probing of UDP path lifetime on the tail end of an active direct connection. Probing configuration has two parts - Cliffs, which are various timeout cliffs of interest, and CycleCanStartEvery, which limits how often a probing cycle can start, per-endpoint. Initially a statically defined default configuration will be used. The default configuration has cliffs of 10s, 30s, and 60s, with a CycleCanStartEvery of 24h. Probing results are communicated via clientmetric counters. Probing is off by default, and can be enabled via control knob. Probing is purely informational and does not yet drive any magicsock behaviors. Updates #540 Signed-off-by: Jordan Whited <jordan@tailscale.com>	4 months ago
James Tucker	7e3bcd297e	go.mod,wgengine/netstack: bump gvisor Updates #8043 Signed-off-by: James Tucker <james@tailscale.com>	4 months ago
Claire Wang	213d696db0	magicsock: mute noisy expected peer mtu related error (#10870 )	4 months ago
Andrew Dunham	7a0392a8a3	wgengine/netstack: expose gVisor metrics through expvar When tailscaled is run with "-debug 127.0.0.1:12345", these metrics are available at: http://localhost:12345/debug/metrics Updates #8210 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I19db6c445ac1f8344df2bc1066a3d9c9030606f8	4 months ago
Andrew Dunham	6540d1f018	wgengine/router: look up absolute path to netsh.exe on Windows This is in response to logs from a customer that show that we're unable to run netsh due to the following error: router: firewall: adding Tailscale-Process rule to allow UDP for "C:\\Program Files\\Tailscale\\tailscaled.exe" ... router: firewall: error adding Tailscale-Process rule: exec: "netsh": cannot run executable found relative to current directory: There's approximately no reason to ever dynamically look up the path of a system utility like netsh.exe, so instead let's first look for it in the System32 directory and only if that fails fall back to the previous behaviour. Updates #10804 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I68cfeb4cab091c79ccff3187d35f50359a690573	5 months ago
Jordan Whited	b084888e4d	wgengine/magicsock: fix typos in docs (#10729 ) Updates #cleanup Signed-off-by: Jordan Whited <jordan@tailscale.com>	5 months ago
Andrew Lytvynov	2716250ee8	all: cleanup unused code, part 2 (#10670 ) And enable U1000 check in staticcheck. Updates #cleanup Signed-off-by: Andrew Lytvynov <awly@tailscale.com>	5 months ago
Andrew Lytvynov	1302bd1181	all: cleanup unused code, part 1 (#10661 ) Run `staticcheck` with `U1000` to find unused code. This cleans up about a half of it. I'll do the other half separately to keep PRs manageable. Updates #cleanup Signed-off-by: Andrew Lytvynov <awly@tailscale.com>	5 months ago
Jordan Whited	685b853763	wgengine/magicsock: fix handling of derp.PeerGoneMessage (#10589 ) The switch in Conn.runDerpReader() on the derp.ReceivedMessage type contained cases other than derp.ReceivedPacket that fell through to writing to c.derpRecvCh, which should only be reached for derp.ReceivedPacket. This can result in the last/previous derp.ReceivedPacket to be re-handled, effectively creating a duplicate packet. If the last derp.ReceivedPacket happens to be a disco.CallMeMaybe it may result in a disco ping scan towards the originating peer on the endpoints contained. The change in this commit moves the channel write on c.derpRecvCh and subsequent select awaiting the result into the derp.ReceivedMessage case, preventing it from being reached from any other case. Explicit continue statements are also added to non-derp.ReceivedPacket cases where they were missing, in order to signal intent to the reader. Fixes #10586 Signed-off-by: Jordan Whited <jordan@tailscale.com>	6 months ago
Andrew Dunham	727acf96a6	net/netcheck: use DERP frames as a signal for home region liveness This uses the fact that we've received a frame from a given DERP region within a certain time as a signal that the region is stil present (and thus can still be a node's PreferredDERP / home region) even if we don't get a STUN response from that region during a netcheck. This should help avoid DERP flaps that occur due to losing STUN probes while still having a valid and active TCP connection to the DERP server. RELNOTE=Reduce home DERP flapping when there's still an active connection Updates #8603 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: If7da6312581e1d434d5c0811697319c621e187a0	6 months ago
Naman Sood	97f84200ac	wgengine/router: implement UpdateMagicsockPort for CallbackRouter (#10494 ) Updates #9084. Signed-off-by: Naman Sood <mail@nsood.in>	6 months ago
Naman Sood	d46a4eced5	util/linuxfw, wgengine: allow ingress to magicsock UDP port on Linux (#10370 ) * util/linuxfw, wgengine: allow ingress to magicsock UDP port on Linux Updates #9084. Currently, we have to tell users to manually open UDP ports on Linux when certain firewalls (like ufw) are enabled. This change automates the process of adding and updating those firewall rules as magicsock changes what port it listens on. Signed-off-by: Naman Sood <mail@nsood.in>	6 months ago
Naman Sood	0a59754eda	linuxfw,wgengine/route,ipn: add c2n and nodeattrs to control linux netfilter Updates tailscale/corp#14029. Signed-off-by: Naman Sood <mail@nsood.in>	6 months ago
James Tucker	215f657a5e	wgengine/router: create netfilter runner in setNetfilterMode This will enable the runner to be replaced as a configuration side effect in a later change. Updates tailscale/corp#14029 Signed-off-by: James Tucker <james@tailscale.com>	6 months ago
Andrew Lytvynov	263e01c47b	wgengine/filter: add protocol-agnostic packet checker (#10446 ) For use in ACL tests, we need a way to check whether a packet is allowed not just with TCP, but any protocol. Updates #3561 Signed-off-by: Andrew Lytvynov <awly@tailscale.com>	6 months ago
Jordan Whited	5e861c3871	wgengine/netstack: disable RACK on Windows (#10402 ) Updates #9707 Signed-off-by: Jordan Whited <jordan@tailscale.com>	6 months ago
Jordan Whited	1af7f5b549	wgengine/magicsock: fix typo in Conn.handlePingLocked() (#10365 ) Updates #cleanup Signed-off-by: Jordan Whited <jordan@tailscale.com>	6 months ago
Brad Fitzpatrick	4d196c12d9	health: don't report a warning in DERP homeless mode Updates #3363 Updates tailscale/corp#396 Change-Id: Ibfb0496821cb58a78399feb88d4206d81e95ca0f Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	7 months ago
Brad Fitzpatrick	3bd382f369	wgengine/magicsock: add DERP homeless debug mode for testing In DERP homeless mode, a DERP home connection is not sought or maintained and the local node is not reachable. Updates #3363 Updates tailscale/corp#396 Change-Id: Ibc30488ac2e3cfe4810733b96c2c9f10a51b8331 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	7 months ago
Jordan Whited	2ff54f9d12	wgengine/magicsock: move trustBestAddrUntil forward on non-disco rx (#10274 ) This is gated behind the silent disco control knob, which is still in its infancy. Prior to this change disco pong reception was the only event that could move trustBestAddrUntil forward, so even though we weren't heartbeating, we would kick off discovery pings every trustUDPAddrDuration and mirror to DERP. Updates #540 Signed-off-by: Jordan Whited <jordan@tailscale.com>	7 months ago
Jordan Whited	c99488ea19	wgengine/magicsock: fix typo in endpoint.sendDiscoPing() docs (#10232 ) Updates #cleanup Signed-off-by: Jordan Whited <jordan@tailscale.com>	7 months ago
Jordan Whited	e848736927	control/controlknobs,wgengine/magicsock: implement SilentDisco toggle (#10195 ) This change exposes SilentDisco as a control knob, and plumbs it down to magicsock.endpoint. No changes are being made to magicsock.endpoint disco behavior, yet. Updates #540 Signed-off-by: Jordan Whited <jordan@tailscale.com> Co-authored-by: Brad Fitzpatrick <bradfitz@tailscale.com>	7 months ago
Charlotte Brandhorst-Satzkorn	839fee9ef4	wgengine/magicsock: handle wireguard only clean up and log messages This change updates log messaging when cleaning up wireguard only peers. This change also stops us unnecessarily attempting to clean up disco pings for wireguard only endpoints. Updates #7826 Signed-off-by: Charlotte Brandhorst-Satzkorn <charlotte@tailscale.com>	7 months ago
Maisem Ali	d0f2c0664b	wgengine/netstack: standardize var names in UpdateNetstackIPs Updates #cleanup Signed-off-by: Maisem Ali <maisem@tailscale.com>	7 months ago
Maisem Ali	eaf8aa63fc	wgengine/netstack: remove unnecessary map in UpdateNetstackIPs Updates #cleanup Signed-off-by: Maisem Ali <maisem@tailscale.com>	7 months ago
Maisem Ali	d601c81c51	wgengine/netstack: use netip.Prefix as map keys Updates #cleanup Signed-off-by: Maisem Ali <maisem@tailscale.com>	7 months ago
James Tucker	6f69fe8ad7	wgnengine: remove unused field in userspaceEngine Updates #cleanup Signed-off-by: James Tucker <james@tailscale.com>	7 months ago
Brad Fitzpatrick	514539b611	wgengine/magicsock: close disco listeners on Conn.Close, fix Linux root TestNewConn TestNewConn now passes as root on Linux. It wasn't closing the BPF listeners and their goroutines. The code is still a mess of two Close overlapping code paths, but that can be refactored later. For now, make the two close paths more similar. Updates #9945 Change-Id: I8a3cf5fb04d22ba29094243b8e645de293d9ed85 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	7 months ago
James Tucker	7df6f8736a	wgengine/netstack: only add addresses to correct protocols Prior to an earlier netstack bump this code used a string conversion path to cover multiple cases of behavior seemingly checking for unspecified addresses, adding unspecified addresses to v6. The behavior is now crashy in netstack, as it is enforcing address length in various areas of the API, one in particular being address removal. As netstack is now protocol specific, we must not create invalid protocol addresses - an address is v4 or v6, and the address value contained inside must match. If a control path attempts to do something otherwise it is now logged and skipped rather than incorrect addressing being added. Fixes tailscale/corp#15377 Signed-off-by: James Tucker <james@tailscale.com>	7 months ago
Jordan Whited	891d964bd4	wgengine/magicsock: simplify tryEnableUDPOffload() (#9872 ) Don't assume Linux lacks UDP_GRO support if it lacks UDP_SEGMENT support. This mirrors a similar change in wireguard/wireguard-go@177caa7 for consistency sake. We haven't found any issues here, just being overly paranoid. Updates #cleanup Signed-off-by: Jordan Whited <jordan@tailscale.com>	8 months ago
Brad Fitzpatrick	c363b9055d	tstest/integration: add tests for tun mode (requiring root) Updates #7894 Change-Id: Iff0b07b21ae28c712dd665b12918fa28d6f601d0 Co-authored-by: Maisem Ali <maisem@tailscale.com> Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	8 months ago
Brad Fitzpatrick	a6270826a3	wgengine/magicsock: fix data race regression in disco ping callbacks Regression from `c15997511d`. The callback could be run multiple times from different endpoints. Fixes #9801 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	8 months ago
Maisem Ali	5297bd2cff	cmd/tailscaled,net/tstun: fix data race on start-up in TUN mode Fixes #7894 Change-Id: Ice3f8019405714dd69d02bc07694f3872bb598b8 Co-authored-by: Brad Fitzpatrick <bradfitz@tailscale.com> Signed-off-by: Maisem Ali <maisem@tailscale.com>	8 months ago
Brad Fitzpatrick	8b630c91bc	wgengine/filter: use slices.Contains in another place We keep finding these. Updates #cleanup Change-Id: Iabc049b0f8da07341011356f0ecd5315c33ff548 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	8 months ago
Maisem Ali	fbfee6a8c0	cmd/containerboot: use linuxfw.NetfilterRunner This migrates containerboot to reuse the NetfilterRunner used by tailscaled instead of manipulating iptables rule itself. This has the added advantage of now working with nftables and we can potentially drop the `iptables` command from the container image in the future. Updates #9310 Co-authored-by: Irbe Krumina <irbe@tailscale.com> Signed-off-by: Maisem Ali <maisem@tailscale.com>	8 months ago
Maisem Ali	05a1f5bf71	util/linuxfw: move detection logic Just a refactor to consolidate the firewall detection logic in a single package so that it can be reused in a later commit by containerboot. Updates #9310 Signed-off-by: Maisem Ali <maisem@tailscale.com>	8 months ago
Val	249edaa349	wgengine/magicsock: add probed MTU metrics Record the number of MTU probes sent, the total bytes sent, the number of times we got a successful return from an MTU probe of a particular size, and the max MTU recorded. Updates #311 Signed-off-by: Val <valerie@tailscale.com>	8 months ago
Val	893bdd729c	disco,net/tstun,wgengine/magicsock: probe peer MTU Automatically probe the path MTU to a peer when peer MTU is enabled, but do not use the MTU information for anything yet. Updates #311 Signed-off-by: Val <valerie@tailscale.com>	8 months ago
Brad Fitzpatrick	6f36f8842c	cmd/tailscale, magicsock: add debug command to flip DERP homes For testing netmap patchification server-side. Updates #1909 Change-Id: Ib1d784bd97b8d4a31e48374b4567404aae5280cc Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	8 months ago
Brad Fitzpatrick	f991c8a61f	tstest: make ResourceCheck panic on parallel tests To find potential flakes earlier. Updates #deflake-effort Change-Id: I52add6111d660821c3a23d4b1dd032821344bc48 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	8 months ago
Jordan Whited	eb22c0dfc7	wgengine/magicsock: use binary.NativeEndian for UDP GSO control data (#9640 ) Updates #cleanup Signed-off-by: Jordan Whited <jordan@tailscale.com>	8 months ago
Val	4130851f12	wgengine/magicsock: probe but don't use path MTU from CLI ping When sending a CLI ping with a specific size, continue to probe all possible UDP paths to the peer until we find one with a large enough MTU to accommodate the ping. Record any peer path MTU information we discover (but don't use it for anything other than CLI pings). Updates #311 Signed-off-by: Val <valerie@tailscale.com>	8 months ago
Val	67926ede39	wgengine/magicsock: add MTU to addrLatency and rename to addrQuality Add a field to record the wire MTU of the path to this address to the addrLatency struct and rename it addrQuality. Updates #311 Signed-off-by: Val <valerie@tailscale.com>	8 months ago
Brad Fitzpatrick	425cf9aa9d	tailcfg, all: use []netip.AddrPort instead of []string for Endpoints It's JSON wire compatible. Updates #cleanup Change-Id: Ifa5c17768fec35b305b06d75eb5f0611c8a135a6 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	8 months ago
Brad Fitzpatrick	5f5c9142cc	util/slicesx: add EqualSameNil, like slices.Equal but same nilness Then use it in tailcfg which had it duplicated a couple times. I think we have it a few other places too. And use slices.Equal in wgengine/router too. (found while looking for callers) Updates #cleanup Change-Id: If5350eee9b3ef071882a3db29a305081e4cd9d23 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	8 months ago
James Tucker	324f0d5f80	cmd/cloner,*: revert: optimize nillable slice cloner This reverts commit `ee90cd02fd`. The outcome is not identical for empty slices. Cloner really needs tests! Updates #9601 Signed-off-by: James Tucker <james@tailscale.com>	8 months ago
James Tucker	ee90cd02fd	cmd/cloner,*: optimize nillable slice cloner A wild @josharian appears with a good suggestion for a refactor, thanks Josh! Updates #9410 Signed-off-by: James Tucker <james@tailscale.com>	8 months ago
Jordan Whited	16fa3c24ea	wgengine/magicsock: use x/sys/unix constants for UDP GSO (#9597 ) Updates #cleanup Signed-off-by: Jordan Whited <jordan@tailscale.com>	8 months ago
Andrea Barisani	f50b2a87ec	wgengine/netstack: refactor address construction and conversion Updates #9252 Updates #9253 Signed-off-by: Andrea Barisani <andrea@inversepath.com> Signed-off-by: James Tucker <james@tailscale.com>	8 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>	8 months ago

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1443 Commits (13f8a669d5cd3bd2af39c693f4878ecbbb4d56d1)