tailscale

Commit Graph

Author	SHA1	Message	Date
Brad Fitzpatrick	7a243ae5b1	wgengine/magicsock: finish TODO to speed up peerMap.forEachEndpointWithDiscoKey Now that peerMap tracks the set of nodes for a DiscoKey. Updates #3088 Change-Id: I927bf2bdfd2b8126475f6b6acc44bc799fcb489f Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	11fdb14c53	wgengine/magicsock: don't check always-non-nil endpoint for nil-ness Continuation of `2aa5df7ac1`, remove nil check because it can never be nil. (It previously was able to be nil.) Change-Id: I59cd9ad611dbdcbfba680ed9b22e841b00c9d5e6 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
David Anderson	e7eb46bced	wgengine/magicsock: add an explicit else branch to peerMap update. Clarifies that the replace+delete of peerinfo data is only when peerInfo already exists. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	2aa5df7ac1	wgengine/magicsock: document and enforce that peerInfo.ep is non-nil. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	521b44e653	wgengine/magicsock: move discoKey fields to the mutex-protected section. Fixes #3106 Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
Brad Fitzpatrick	a6d02dc122	wgengine/magicsock: track which NodeKey each DiscoKey was last for This adds new fields (currently unused) to discoInfo to track what the last verified (unambiguous) NodeKey a DiscoKey last mapped to, and when. Then on CallMeMaybe, Pong and on most Pings, we update the mapping from DiscoKey to the current NodeKey for that DiscoKey. Updates #3088 Change-Id: Idc4261972084dec71cf8ec7f9861fb9178eb0a4d Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	c759fcc7d3	wgengine/magicsock: fix data race with sync.Pool in error+logging path Fixes #3122 Change-Id: Ib52e84f9bd5813d6cf2e80ce5b2296912a48e064 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	75a7779b42	disco, wgengine/magicsock: send self node key in disco pings This lets clients quickly (sub-millisecond within a local LAN) map from an ambiguous disco key to a node key without waiting for a CallMeMaybe (over relatively high latency DERP). Updates #3088 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Denton Gentry	def650b3e8	wgengine/magicsock: don't Rebind after STUN error if closed. https://github.com/tailscale/tailscale/pull/3014 added a rebind on STUN failure, which means there can now be a tailscale.com/wgengine/magicsock.(*RebindingUDPConn).ReadFromNetaddr in progress at the end of the test waiting for a STUN response which will never arrive. This causes a test flake due to the resource leak in those cases where the Conn decided to rebind. For whatever reason, it mostly flakes with Windows. If the Conn is closed, don't Rebind after a send error. Signed-off-by: Denton Gentry <dgentry@tailscale.com>	3 years ago
Brad Fitzpatrick	f55c2bccf5	wgengine/magicsock: don't call setAddrToDiscoLocked on DERP ping Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	569f70abfd	wgengine/magicsock: finish some renamings of discoEndpoint to endpoint Renames only; continuation of earlier `8049063d35` These kept confusing me while working on #3088 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	695df497ba	wgengine/magicsock: delete peerMap.endpointForDiscoKey, remove remaining caller The one remaining caller of peerMap.endpointForDiscoKey was making the improper assumption that there's exactly 1 node with a given DiscoKey in the network. That was the cause of #3088. Now that all the other callers have been updated to not use endpointForDiscoKey, there's no need to try to keep maintaining that prone-to-misuse index. Updates #3088 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	04fd94acd6	wgengine/magicsock: remove endpointForDiscoKey call from handleDiscoMessage A DiscoKey maps 1:n to endpoints. When we get a disco pong, we don't necessarily know which endpoint sent it to us. Ask them all. There will only usually be 1 (and in rare circumstances 2). So it's easier to ask all two rather than building new maps from the random ping TxID to its endpoint. Updates #3088 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	151b4415ca	wgengine/magicsock: remove endpoint parameter from handlePingLocked We can reply to a ping without knowing which exact node it's from. As long as it's in our netmap, it's safe to reply. If there's more than one node with that discokey, it doesn't matter who we're relpying to. Updates #3088 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	d86081f353	wgengine/magicsock: add new discoInfo type for DiscoKey state, move some fields As more prep for removing the false assumption that you're able to map from DiscoKey to a single peer, move the lastPingFrom and lastPingTime fields from the endpoint type to a new discoInfo type, effectively upgrading the old sharedDiscoKey map (which only held a *[32]byte nacl precomputed key as its value) to discoInfo which then includes that naclbox key. Then start plumbing it into handlePing in prep for removing the need for handlePing to take an endpoint parameter. Updates #3088 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	e5779f019e	wgengine/magicsock: move temporary endpoint lookup later, add TODO to remove Updates #3088 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	36a07089ee	wgengine/magicsock: remove redundant/wrong sharedDiscoKey delete The pass just after in this method handles cleaning up sharedDiscoKey. No need to do it wrong (assuming DiscoKey => 1 node) earlier. Updates #3088 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	3e80806804	wgengine/magicsock: pass src NodeKey to handleDiscoMessage for DERP disco msgs And then use it to avoid another lookup-by-DiscoKey. Updates #3088	3 years ago
Brad Fitzpatrick	82fa15fa3b	wgengine/magicsock: start removing endpointForDiscoKey It's not valid to assume that a discokey is globally unique. This removes the first two of the four callers. Updates #3088 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Avery Pennarun	0d4a0bf60e	magicsock: if STUN failed to send before, rebind before STUNning again. On iOS (and possibly other platforms), sometimes our UDP socket would get stuck in a state where it was bound to an invalid interface (or no interface) after a network reconfiguration. We can detect this by actually checking the error codes from sending our STUN packets. If we completely fail to send any STUN packets, we know something is very broken. So on the next STUN attempt, let's rebind the UDP socket to try to correct any problems. This fixes a problem where iOS would sometimes get stuck using DERP instead of direct connections until the backend was restarted. Fixes #2994 Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	3 years ago
David Anderson	830f641c6b	wgengine/magicsock: update discokeys on netmap change. Fixes #3008. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
Josh Bleecher Snyder	a722e48cef	wgengine/magicsock: skip alloc test with -race Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Brad Fitzpatrick	31c1331415	wgengine/magicsock: deflake TestReceiveFromAllocs 100 iterations isn't enough with background allocs happening apparently. 1000 seems to be reliable. Fixes #2826 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	2238814b99	wgengine/magicsock: fix crash introduced in recent cleanups Fixes #2801 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	640134421e	all: update tests to use tstest.MemLogger And give MemLogger a mutex, as one caller had, which does match the logf contract better. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
David Anderson	efe8020dfa	wgengine/magicsock: fix race condition in tests. AFAICT this was always present, the log read mid-execution was never safe. But it seems like the recent magicsock refactoring made the race much more likely. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
Brad Fitzpatrick	5bacbf3744	wgengine/magicsock, health, ipn/ipnstate: track DERP-advertised health And add health check errors to ipnstate.Status (tailscale status --json). Updates #2746 Updates #2775 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
David Anderson	bb10443edf	wgengine/wgcfg: use just the hexlified node key as the WireGuard endpoint. The node key is all magicsock needs to find the endpoint that WireGuard needs. Updates #2752 Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	d00341360f	wgengine/magicsock: remove unused debug knob. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	dfd978f0f2	wgengine/magicsock: use NodeKey, not DiscoKey, as the trigger for lazy reconfig. Updates #2752 Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	4c27e2fa22	wgengine/magicsock: remove Start method from Conn. Over time, other magicsock refactors have made Start effectively a no-op, except that some other functions choose to panic if called before Start. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	1a899344bd	wgengine/magicsock: don't store tailcfg.Nodes alongside endpoints. Updates #2752 Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	b2181608b5	wgengine/magicsock: eagerly create endpoints in SetNetworkMap. Updates #2752 Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
Emmanuel T Odeke	0daa32943e	all: add (*testing.B).ReportAllocs() to every benchmark This ensures that we can properly track and catch allocation slippages that could otherwise have been missed. Fixes #2748	3 years ago
David Anderson	44d71d1e42	wgengine/magicsock: fix race in test shutdown, again. We were returning an error almost, but not quite like errConnClosed in a single codepath, which could still trip the panic on reconfig in the test logic. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	f09ede9243	wgengine/magicsock: don't configure eager WireGuard handshaking in tests. Our prod code doesn't eagerly handshake, because our disco layer enables on-demand handshaking. Configuring both peers to eagerly handshake leads to WireGuard handshake races that make TestTwoDevicePing flaky. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	86d1c4eceb	wgengine/magicsock: ignore close races even harder. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	8bacfe6a37	wgengine/magicsock: remove unused sendLogLimit limiter. Magicsock these days gets its logs limited by the global log limiter. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	e151b74f93	wgengine/magicsock: remove opts.SimulatedNetwork. It only existed to override one test-only behavior with a different test-only behavior, in both cases working around an annoying feature of our CI environments. Instead, handle that weirdness entirely in the test code, with a tweaked TestOnlyPacketListener that gets injected. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	58c1f7d51a	wgengine/magicsock: rename opts.PacketListener to TestOnlyPacketListener. The docstring said it was meant for use in tests, but it's specifically a special codepath that is _only_ used in tests, so make the claim stronger. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	8049063d35	wgengine/magicsock: rename discoEndpoint to just endpoint. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	f2d949e2db	wgengine/magicsock: fold findEndpoint into its only remaining caller. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	fe2f89deab	wgengine/magicsock: fix rare shutdown race in test. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	97693f2e42	wgengine/magicsock: delete legacy AddrSet endpoints. Instead of using the legacy codepath, teach discoEndpoint to handle peers that have a home DERP, but no disco key. We can still communicate with them, but only over DERP. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
slowy07	ac0353e982	fix: typo spelling grammar Signed-off-by: slowy07 <slowy.arfy@gmail.com>	3 years ago
Brad Fitzpatrick	37053801bb	wgengine/magicsock: restore a bit of logging on node becoming active Fixes #2695 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	39610aeb09	wgengine/magicsock: move debug knobs to their own file, compile out on iOS No need for these knobs on iOS where you can set the environment variables anyway. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	f3c96df162	ipn/ipnstate: move tailscale status "active" determination to tailscaled Fixes #2579 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	b622c60ed0	derp,wgengine/magicsock: don't assume stringer is in $PATH for go:generate Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Josh Bleecher Snyder	8a3d52e882	wgengine/magicsock: use mono.Time magicsock makes multiple calls to Now per packet. Move to mono.Now. Changing some of the calls to use package mono has a cascading effect, causing non-per-packet call sites to also switch. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago

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433 Commits (7a243ae5b1968727e3f06ffd15c5c40ad8ab0026)