tailscale

Commit Graph

Author	SHA1	Message	Date
Brad Fitzpatrick	4811236189	wgengine/magicsock: speed up BenchmarkReceiveFrom, store context.Done chan context.cancelCtx.Done involves a mutex and isn't as cheap as I previously assumed. Convert the donec method into a struct field and store the channel value once. Our one magicsock.Conn gets one pointer larger, but it cuts ~1% of the CPU time of the ReceiveFrom benchmark and removes a bubble from the --svg output :)	3 years ago
Josh Bleecher Snyder	ed2169ae99	wgengine/magicsock: prevent logging after TestActiveDiscovery completes	3 years ago
Josh Bleecher Snyder	63af950d8c	wgengine/magicsock: adapt to wireguard-go without UpdateDst `22507adf54` stopped relying on our fork of wireguard-go's UpdateDst callback. As a result, we can unwind that code, and the extra return value of ReceiveIPv{4,6}. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Denton Gentry	23c2dc2165	magicksock: remove TestConnClosing. (#1140 ) Test is flakey, remove it and figure out what to do differently later. Signed-off-by: Denton Gentry <dgentry@tailscale.com>	3 years ago
David Anderson	e23b4191c4	wgengine/magicsock: disable legacy networking everywhere except TwoDevicePing. TwoDevicePing is explicitly testing the behavior of the legacy codepath, everything else is happy to assume that code no longer exists. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	0733c5d2e0	wgengine/magicsock: disable legacy behavior in a few more tests. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	57d95dd005	wgengine/magicsock: default legacy networking to off for some tests. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	a2463e8948	wgengine/magicsock: add an option to disable legacy peer handling. Used in tests to ensure we're not relying on behavior we're going to remove eventually. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	d456bfdc6d	wgengine/magicsock: fix BenchmarkReceiveFrom. Previously, this benchmark relied on behavior of the legacy receive codepath, which I changed in `22507adf`. With this change, the benchmark instead relies on the new active discovery path. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
Josh Bleecher Snyder	2d837f79dc	wgengine/magicsock: close test loggers once we're done with them This is a big hammer approach to helping with #1132. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	08baa17d9a	wgengine/magicsock: shortcircuit discoEndpoint.heartbeat when its connection is closed This prevents us from continuing to do unnecessary work (including logging) after the connection has closed. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	7c76435bf7	wgengine/magicsock: simplify Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	d2529affa2	wgengine/magicsock: quiet wireguard-go logging in tests We already do this in newUserspaceEngineAdvanced. Apply it to newMagicStack as well. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	654b5f1570	all: convert from []wgcfg.Endpoint to string This eliminates a dependency on wgcfg.Endpoint, as part of the effort to eliminate our wireguard-go fork. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
David Anderson	9abcb18061	wgengine/magicsock: import more of wireguard-go, update docstrings. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	22507adf54	wgengine/magicsock: stop depending on UpdateDst in legacy codepaths. This makes connectivity between ancient and new tailscale nodes slightly worse in some cases, but only in cases where the ancient version would likely have failed to get connectivity anyway. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
Denton Gentry	8349e10907	magicsock: add description of testClosingContext Signed-off-by: Denton Gentry <dgentry@tailscale.com>	4 years ago
Denton Gentry	2e9728023b	magicsock: test error case in sendDiscoMessage In sendDiscoMessage there is a check of whether the connection is closed, which is not being reliably exercised by other tests. This shows up in code coverage reports, the lines of code in sendDiscoMessage are alternately added and subtracted from code coverage. Add a test to specifically exercise and verify this code path. Signed-off-by: Denton Gentry <dgentry@tailscale.com>	4 years ago
Denton Gentry	0aa55bffce	magicsock: test error case in derpWriteChanOfAddr In derpWriteChanOfAddr when we call derphttp.NewRegionClient(), there is a check of whether the connection is already errored and if so it returns before grabbing the lock. The lock might already be held and would be a deadlock. This corner case is not being reliably exercised by other tests. This shows up in code coverage reports, the lines of code in derpWriteChanOfAddr are alternately added and subtracted from code coverage. Add a test to specifically exercise this code path, and verify that it doesn't deadlock. This is the best tradeoff I could come up with: + the moment code calls Err() to check if there is an error, we grab the lock to make sure it would deadlock if it tries to grab the lock itself. + if a new call to Err() is added in this code path, only the first one will be covered and the rest will not be tested. + this test doesn't verify whether code is checking for Err() in the right place, which ideally I guess it would. Signed-off-by: Denton Gentry <dgentry@tailscale.com>	4 years ago
Brad Fitzpatrick	85e54af0d7	wgengine: on TCP connect fail/timeout, log some clues about why it failed So users can see why things aren't working. A start. More diagnostics coming. Updates #1094	4 years ago
Brad Fitzpatrick	f85769b1ed	wgengine/magicsock: drop netaddr.IPPort cache netaddr.IP no longer allocates, so don't need a cache or all its associated code/complexity. This totally removes groupcache/lru from the deps. Also go mod tidy.	4 years ago
Brad Fitzpatrick	5aa5db89d6	cmd/tailscaled, wgengine/netstack: add start of gvisor userspace netstack work Not usefully functional yet (mostly a proof of concept), but getting it submitted for some work @namansood is going to do atop this. Updates #707 Updates #634 Updates #48 Updates #835	4 years ago
Brad Fitzpatrick	5efb0a8bca	cmd/tailscale: change formatting of "tailscale status" * show DNS name over hostname, removing domain's common MagicDNS suffix. only show hostname if there's no DNS name. but still show shared devices' MagicDNS FQDN. * remove nerdy low-level details by default: endpoints, DERP relay, public key. They're available in JSON mode still for those who need them. * only show endpoint or DERP relay when it's active with the goal of making debugging easier. (so it's easier for users to understand what's happening) The asterisks are gone. * remove Tx/Rx numbers by default for idle peers; only show them when there's traffic. * include peers' owner login names * add CLI option to not show peers (matching --self=true, --peers= also defaults to true) * sort by DNS/host name, not public key * reorder columns	4 years ago
Brad Fitzpatrick	b5b9866ba2	wgengine/magicsock: copy self DNS name to PeerStatus, re-fill OS The OS used to be sent back from the server but that has since been removed as being redundant.	4 years ago
David Anderson	86fe22a1b1	Update netaddr, and adjust wgengine/magicsock due to API change. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
Josh Bleecher Snyder	56a7652dc9	wgkey: new package This is a replacement for the key-related parts of the wireguard-go wgcfg package. This is almost a straight copy/paste from the wgcfg package. I have slightly changed some of the exported functions and types to avoid stutter, added and tweaked some comments, and removed some now-unused code. To avoid having wireguard-go depend on this new package, wgcfg will keep its key types. We translate into and out of those types at the last minute. These few remaining uses will be eliminated alongside the rest of the wgcfg package. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	2fe770ed72	all: replace wgcfg.IP and wgcfg.CIDR with netaddr types Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Brad Fitzpatrick	053a1d1340	all: annotate log verbosity levels on most egregiously spammy log prints Fixes #924 Fixes #282 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
David Anderson	294ceb513c	ipn, wgengine/magicsock: fix `tailscale status` display. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	c8c493f3d9	wgengine/magicsock: make ReceiveIPv4 a little easier to follow. The previous code used a lot of whole-function variables and shared behavior that only triggered based on prior action from a single codepath. Instead of that, move the small amounts of "shared" code into each switch case. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	0ad109f63d	wgengine/magicsock: move legacy endpoint creation into legacy.go. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	f873da5b16	wgengine/magicsock: move more legacy endpoint handling. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	58fcd103c4	wgengine/magicsock: move legacy sending code to legacy.go. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	65ae66260f	wgengine/magicsock: unexport AddrSet. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	c9b9afd761	wgengine/magicsock: move most legacy nat traversal bits to another file. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	554a20becb	wgengine/magicsock: only log about lazy config when actually doing lazy config. Before, tailscaled would log every 10 seconds when the periodic noteRecvActivity call happens. This is noisy, but worse it's misleading, because the message suggests that the disco code is starting a lazy config run for a missing peer, whereas in fact it's just an internal piece of keepalive logic. With this change, we still log when going from 0->1 tunnel for the peer, but not every 10s thereafter. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
Brad Fitzpatrick	fa412c8760	wgengine/filter, wgengine/magicsock: use new IP.BitLen to simplify some code	4 years ago
David Anderson	9cee0bfa8c	wgengine/magicsock: sprinkle more docstrings. Magicsock is too damn big, but this might help me page it back in faster next time. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
Brad Fitzpatrick	7b92f8e718	wgengine/magicsock: add start of magicsock benchmarks (Conn.ReceiveIPv4 for now) And only single-threaded for now. Will get fancier later. Updates #414	4 years ago
Brad Fitzpatrick	713cbe84c1	wgengine/magicsock: use net.JoinHostPort when host might have colons (udp6) Only affected tests. (where it just generated log spam)	4 years ago
Brad Fitzpatrick	450cfedeba	wgengine/magicsock: quiet an IPv6 warning in tests In tests, we force binding to localhost to avoid OS firewall warning dialogs. But for IPv6, we were trying (and failing) to bind to 127.0.0.1. You'd think we'd just say "localhost", but that's apparently ill defined. See https://tools.ietf.org/html/draft-ietf-dnsop-let-localhost-be-localhost and golang/go#22826. (It's bitten me in the past, but I can't remember specific bugs.) So use "::1" explicitly for "udp6", which makes the test quieter.	4 years ago
David Anderson	7a54910990	wgengine/filter: remove helper vars, mark NewAllowAll test-only. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	b3634f020d	wgengine/filter: use netaddr types in public API. We still use the packet.* alloc-free types in the data path, but the compilation from netaddr to packet happens within the filter package. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
Brad Fitzpatrick	fd2a30cd32	wgengine/magicsock: make test pass on Windows and without firewall dialog box Updates #50	4 years ago
Brad Fitzpatrick	ac866054c7	wgengine/magicsock: add a backoff on DERP reconnects Fixes #808	4 years ago
Brad Fitzpatrick	105a820622	wgengine/magicsock: skip an endpoint update at start-up At startup the client doesn't yet have the DERP map so can't do STUN queries against DERP servers, so it only knows it local interface addresses, not its STUN-mapped addresses. We were reporting the interface-local addresses to control, getting the DERP map, and then immediately reporting the full set of updates. That was an extra HTTP request to control, but worse: it was an extra broadcast from control out to all the peers in the network. Now, skip the initial update if there are no stun results and we don't have a DERP map. More work remains optimizing start-up requests/map updates, but this is a start. Updates tailscale/corp#557	4 years ago
Brad Fitzpatrick	2076a50862	wgengine/magicsock: finish a comment sentence that ended prematurely	4 years ago
Brad Fitzpatrick	3e4c46259d	wgengine/magicsock: don't do netchecks either when network is down A continuation of `6ee219a25d` Updates #640	4 years ago
Brad Fitzpatrick	6ee219a25d	ipn, wgengine, magicsock, tsdns: be quieter and less aggressive when offline If no interfaces are up, calm down and stop spamming so much. It was noticed as especially bad on Windows, but probably was bad everywhere. I just have the best network conditions testing on a Windows VM. Updates #604	4 years ago
Brad Fitzpatrick	c86761cfd1	Remove tuntap references. We only use TUN.	4 years ago

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282 Commits (48112361894cc741416168b00f101e46822aa4c8)