tailscale

Commit Graph

Author	SHA1	Message	Date
Dmytro Shynkevych	737124ef70	tstun: tolerate zero reads Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>	4 years ago
David Anderson	7317e73bf4	control/controlclient: move direct_test back to corp repo. It can only be built with corp deps anyway, and having it split from the control code makes our lives harder. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
Dmytro Shynkevych	7508b67c54	cmd/tailscale: expose --enable-derp Signed-off-by: Dmytro Shynkevych <dm.shynk@gmail.com>	4 years ago
Brad Fitzpatrick	703d789005	tailcfg: add MapResponse.Debug mechanism to trigger logging heap pprof Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Brad Fitzpatrick	b0c10fa610	stun, netcheck: move under net	4 years ago
Brad Fitzpatrick	43ded2b581	wgengine/packet: add some tests, more docs, minor Go style, performance changes	4 years ago
Brad Fitzpatrick	3f4a567032	types/strbuilder: add a variant of strings.Builder that uses sync.Pool ... and thus does not need to worry about when it escapes into unprovable fmt interface{} land. Also, add some convenience methods for efficiently writing integers.	4 years ago
Brad Fitzpatrick	e6b84f2159	all: make client use server-provided DERP map, add DERP region support Instead of hard-coding the DERP map (except for cmd/tailscale netcheck for now), get it from the control server at runtime. And make the DERP map support multiple nodes per region with clients picking the first one that's available. (The server will balance the order presented to clients for load balancing) This deletes the stunner package, merging it into the netcheck package instead, to minimize all the config hooks that would've been required. Also fix some test flakes & races. Fixes #387 (Don't hard-code the DERP map) Updates #388 (Add DERP region support) Fixes #399 (wgengine: flaky tests) Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 years ago
David Anderson	e8b3a5e7a1	wgengine/filter: implement a destination IP pre-filter. Signed-off-by: David Anderson <danderson@tailscale.com>	5 years ago
Brad Fitzpatrick	35a8586f7e	go.sum: go mod tidy	5 years ago
Avery Pennarun	3ed2124356	ipn: Resolve some resource leaks in test. Updates tailscale/corp#255. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	5 years ago
Avery Pennarun	ea8f92b312	ipn/local: get rid of some straggling calls to the log module. Use b.logf() instead. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	5 years ago
Avery Pennarun	af9328c1b7	log rate limiting: reformat limiter messages, and use nonempty burst size. - Reformat the warning about a message being rate limited to print the format string, rather than the formatted message. This helps give a clue what "type" of message is being limited. - Change the rate limit warning to be [RATE LIMITED] in all caps. This uses less space on each line, plus is more noticeable. - In tailscaled, change the frequency to be less often (once every 5 seconds per format string) but to allow bursts of up to 5 messages. This greatly reduces the number of messages that are rate limited during startup, but allows us to tighten the limit even further during normal runtime. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	5 years ago
Avery Pennarun	f2db4ac277	cmd/tailscaled: SetGCPercent() if GOGC is not set. This cuts RSS from ~30MB to ~20MB on my machine, after the previous fix to get rid of unnecessary zstd buffers. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	5 years ago
Avery Pennarun	db051fb013	ipnserver and logpolicy: configure zstd with low-memory settings. The compressed blobs we send back and forth are small and infrequent, which doesn't justify the 8MB * GOMAXPROCS memory that was being allocated. This was the overwhelming majority of memory use in tailscaled. On my system it goes from ~100M RSS to ~15M RSS (which is still suspiciously high, but we can worry about that more later). Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	5 years ago
Avery Pennarun	d074ec6571	cmd/tailscaled: eliminate unnecessary use of an init() function. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	5 years ago
Avery Pennarun	c5fcc38bf1	controlclient tests: fix more memory leaks and add resource checking. I can now run these tests with -count=1000 without running out of RAM. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	5 years ago
Avery Pennarun	d03de31404	controlclient/direct: fix a race condition accessing auth keys. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	5 years ago
Avery Pennarun	1013cda799	controlclient/auto_test: don't print the s.control object. This contains atomic ints that trigger a race check error if we access them non-atomically. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	5 years ago
Avery Pennarun	806de4ac94	portlist: fix "readdirent: no such file or directory" errors on Linux. This could happen when a process disappeared while we were reading its file descriptor list. I was able to replicate the problem by running this in another terminal: while :; do for i in $(seq 10); do /bin/true & done >&/dev/null; wait >&/dev/null; done And then running the portlist tests thousands of times. Fixes #339. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	5 years ago
David Anderson	c97c45f268	ipn: sprinkle documentation and clarity rewrites through LocalBackend. Signed-off-by: David Anderson <danderson@tailscale.com>	5 years ago
David Anderson	39d20e8a75	go.mod: bump wireguard-go version.	5 years ago
David Anderson	cd2f6679bb	go.mod: bump wireguard-go version. Signed-off-by: David Anderson <danderson@tailscale.com>	5 years ago
David Anderson	7fb33123d3	wgengine/router: warn about another variation of busybox's `ip`. Signed-off-by: David Anderson <danderson@tailscale.com>	5 years ago
Wendi Yu	bb55694c95	wgengine: log node IDs when peers are added/removed (#381 ) Also stop logging data sent/received from nodes we're not connected to (ie all those `x`s being logged in the `peers: ` line) Signed-off-by: Wendi <wendi.yu@yahoo.ca>	5 years ago
Dmytro Shynkevych	635f7b99f1	wgengine: pass tun.NativeDevice to router Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>	5 years ago
David Anderson	9c914dc7dd	wgengine/router: stop using -m comment. The comment module is compiled out on several embedded systems (and also gentoo, because netfilter can't go brrrr with comments holding it back). Attempting to use comments results in a confusing error, and a non-functional firewall. Additionally, make the legacy rule cleanup non-fatal, because we do have to probe for the existence of these -m comment rules, and doing so will error out on these systems. Signed-off-by: David Anderson <danderson@tailscale.com>	5 years ago
David Anderson	3e27b3c33c	wgengine/router: more comments. Signed-off-by: David Anderson <danderson@tailscale.com>	5 years ago
David Anderson	0fe262f093	ipn: plumb NetfilterMode all the way out to the CLI. Signed-off-by: David Anderson <danderson@tailscale.com>	5 years ago
David Anderson	c67c8913c3	wgengine/router: add a test for linux router state transitions. Signed-off-by: David Anderson <danderson@tailscale.com>	5 years ago
David Anderson	292606a975	wgengine/router: support multiple levels of netfilter involvement. Signed-off-by: David Anderson <danderson@tailscale.com>	5 years ago
Brad Fitzpatrick	cff53c6e6d	tailcfg: add DERP map structures Updates #387 Updates #388 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 years ago
Brad Fitzpatrick	5ec7ac1d02	tstest: document PanicOnLog	5 years ago
Brad Fitzpatrick	e6d0c92b1d	wgengine/magicsock: clean up earlier fix a bit Move WaitReady from `fc88e34f42` into the test code, and keep the derp-reading goroutine named for debugging.	5 years ago
Avery Pennarun	d0754760e7	controlclient/auto_test: fix flake "peer OS is not linux" on macOS. We were mis-counting the number of Synchronized messages that we should have been generating.	5 years ago
Avery Pennarun	8f8607b6bf	control/controlclient/auto_test: clean up logging to defeat 'go test' idiocy. By default, nothing differentiates errors or fatals from regular logs, so they just blend into the rest of the logs. As a bonus, if you run a test using t.Run(), the log messages printed via the sub-t.Run() are printed at a different time from log messages printed via the parent t.Run(), making debugging almost impossible. This doesn't actually fix the test flake I'm looking for, but at least I can find it in the logs now. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	5 years ago
Avery Pennarun	d53e8fc0da	router_darwin_support: we can build this on every platform. Our new build scripts try to build ipn-go-bridge on more than just linux and darwin, so let's enable this file so it can be successful on every platform.	5 years ago
Avery Pennarun	3b1ce30967	Merge branch 'master' of github.com:tailscale/tailscale * 'master' of github.com:tailscale/tailscale: derp/derphttp: don't use x/net/proxy for SOCKS on iOS	5 years ago
Avery Pennarun	286f96e412	control/controlclient: fix a very rare httptest.Server log.Printf. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	5 years ago
Brad Fitzpatrick	040a0d5121	derp/derphttp: don't use x/net/proxy for SOCKS on iOS We don't want those extra dependencies on iOS, at least yet. Especially since there's no way to set the relevant environment variables so it's just bloat with no benefits. Perhaps we'll need to do SOCKS on iOS later, but probably differently if/when so. Updates #227 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 years ago
Avery Pennarun	fc88e34f42	wgengine/magicsock/tests: wait for home DERP connection before sending packets. This fixes an elusive test flake. Fixes #161. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	5 years ago
Avery Pennarun	4f128745d8	magicsock/test: oops, fix a data race in nested-test logf hack. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	5 years ago
Avery Pennarun	42a0e0c601	wgengine/magicsock/tests: call tstest.ResourceCheck for each test. This didn't catch anything yet, but it's good practice for detecting goroutine leaks that we might not find otherwise. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	5 years ago
Avery Pennarun	08acb502e5	Add tstest.PanicOnLog(), and fix various problems detected by this. If a test calls log.Printf, 'go test' horrifyingly rearranges the output to no longer be in chronological order, which makes debugging virtually impossible. Let's stop that from happening by making log.Printf panic if called from any module, no matter how deep, during tests. This required us to change the default error handler in at least one http.Server, as well as plumbing a bunch of logf functions around, especially in magicsock and wgengine, but also in logtail and backoff. To add insult to injury, 'go test' also rearranges the output when a parent test has multiple sub-tests (all the sub-test's t.Logf is always printed after all the parent tests t.Logf), so we need to screw around with a special Logf that can point at the "current" t (current_t.Logf) in some places. Probably our entire way of using subtests is wrong, since 'go test' would probably like to run them all in parallel if you called t.Parallel(), but it definitely can't because the're all manipulating the shared state created by the parent test. They should probably all be separate toplevel tests instead, with common setup/teardown logic. But that's a job for another time. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	5 years ago
Avery Pennarun	e0b666c5d2	tstest.ResourceCheck: clarify success message. Inclusion of the word "assert" made it seem like a failure, even though it was supposed to be identifying the name of the function (Assert()). Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	5 years ago
Avery Pennarun	89a6f27cf8	Merge remote-tracking branch 'origin/master' into base * origin/master: types/logger: add ArgWriter wgengine: wrap tun.Device to support filtering and packet injection (#358)	5 years ago
Avery Pennarun	a7edf11a40	{ipn,control/controlclient}/tests: pass a logf function to control.New(). This matches the new API requirements. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	5 years ago
Brad Fitzpatrick	fe97bedf67	types/logger: add ArgWriter	5 years ago
Dmytro Shynkevych	33b2f30cea	wgengine: wrap tun.Device to support filtering and packet injection (#358 ) Right now, filtering and packet injection in wgengine depend on a patch to wireguard-go that probably isn't suitable for upstreaming. This need not be the case: wireguard-go/tun.Device is an interface. For example, faketun.go implements it to mock a TUN device for testing. This patch implements the same interface to provide filtering and packet injection at the tunnel device level, at which point the wireguard-go patch should no longer be necessary. This patch has the following performance impact on i7-7500U @ 2.70GHz, tested in the following namespace configuration: ┌────────────────┐ ┌─────────────────────────────────┐ ┌────────────────┐ │ $ns1 │ │ $ns0 │ │ $ns2 │ │ client0 │ │ tailcontrol, logcatcher │ │ client1 │ │ ┌─────┐ │ │ ┌──────┐ ┌──────┐ │ │ ┌─────┐ │ │ │vethc│───────┼────┼──│vethrc│ │vethrs│──────┼─────┼──│veths│ │ │ ├─────┴─────┐ │ │ ├──────┴────┐ ├──────┴────┐ │ │ ├─────┴─────┐ │ │ │10.0.0.2/24│ │ │ │10.0.0.1/24│ │10.0.1.1/24│ │ │ │10.0.1.2/24│ │ │ └───────────┘ │ │ └───────────┘ └───────────┘ │ │ └───────────┘ │ └────────────────┘ └─────────────────────────────────┘ └────────────────┘ Before: --------------------------------------------------- \| TCP send \| UDP send \| \|------------------------\|------------------------\| \| 557.0 (±8.5) Mbits/sec \| 3.03 (±0.02) Gbits/sec \| --------------------------------------------------- After: --------------------------------------------------- \| TCP send \| UDP send \| \|------------------------\|------------------------\| \| 544.8 (±1.6) Mbits/sec \| 3.13 (±0.02) Gbits/sec \| --------------------------------------------------- The impact on receive performance is similar. Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>	5 years ago
David Anderson	9ccbcda612	wgengine/router: rename config.Settings to config.Config, make pointer. Signed-off-by: David Anderson <danderson@tailscale.com>	5 years ago

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