tailscale

Commit Graph

Author	SHA1	Message	Date
Josh Bleecher Snyder	f013960d87	tstime/mono: make json.Unmarshal of a zero time.Time yield a zero Time This was the proximate cause of #2579. #2582 is a deeper fix, but this will remain as a footgun, so may as well fix it too. Signed-off-by: Josh Bleecher Snyder <josh@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	0858673f1f	tstest/integration: regenerate test deps Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Joe Tsai	9d0c86b6ec	util/deephash: remove unnecessary formatting for structs and slices (#2571 ) The index for every struct field or slice element and the number of fields for the struct is unncessary. The hashing of Go values is unambiguous because every type (except maps) encodes in a parsable manner. So long as we know the type information, we could theoretically decode every value (except for maps). At a high level: * numbers are encoded as fixed-width records according to precision. * strings (and AppendTo output) are encoded with a fixed-width length, followed by the contents of the buffer. * slices are prefixed by a fixed-width length, followed by the encoding of each value. So long as we know the type of each element, we could theoretically decode each element. * arrays are encoded just like slices, but elide the length since it is determined from the Go type. * maps are encoded first with a byte indicating whether it is a cycle. If a cycle, it is followed by a fixed-width index for the pointer, otherwise followed by the SHA-256 hash of its contents. The encoding of maps is not decodeable, but a SHA-256 hash is sufficient to avoid ambiguities. * interfaces are encoded first with a byte indicating whether it is nil. If not nil, it is followed by a fixed-width index for the type, and then the encoding for the underlying value. Having the type be encoded first ensures that the value could theoretically be decoded next. * pointers are encoded first with a byte indicating whether it is 1) nil, 2) a cycle, or 3) newly seen. If a cycle, it is followed by a fixed-width index for the pointer. If newly seen, it is followed by the encoding for the pointed-at value. Removing unnecessary details speeds up hashing: name old time/op new time/op delta Hash-8 76.0µs ± 1% 55.8µs ± 2% -26.62% (p=0.000 n=10+10) HashMapAcyclic-8 61.9µs ± 0% 62.0µs ± 0% ~ (p=0.666 n=9+9) TailcfgNode-8 10.2µs ± 1% 7.5µs ± 1% -26.90% (p=0.000 n=10+9) HashArray-8 1.07µs ± 1% 0.70µs ± 1% -34.67% (p=0.000 n=10+9) Signed-off-by: Joe Tsai <joetsai@digital-static.net>	3 years ago
Brad Fitzpatrick	1db9032ff5	cmd/tailscaled: let portmap debug mode have an gateway/IP override knob For testing pfSense clients "behind" pfSense on Digital Ocean where the main interface still exists. This is easier for debugging. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Denton Gentry	260b85458c	net/dns: correct log message. Signed-off-by: Denton Gentry <dgentry@tailscale.com>	3 years ago
Brad Fitzpatrick	54e33b511a	net/dns/resolver: add test that I forgot to git add earlier This was meant to be part of `53a2f63658` earlier but I guess I failed at git. Updates #2436 Updates tailscale/corp#2250 Updates tailscale/corp#2238 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
David Crawshaw	eab80e3877	logpolicy: only log panics when running under systemd Given that https://github.com/golang/go/issues/42888 is coming, this catches most practical panics without interfering in our development environments. Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	3 years ago
Brad Fitzpatrick	24ee0ed3c3	tstest/integration: update test deps Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	31ea073a73	cmd/tailscaled: add debug -portmap mode Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Joe Tsai	d8fbce7eef	util/deephash: hash uint{8,16,32,64} explicitly (#2502 ) Instead of hashing the humanly formatted forms of a number, hash the native machine bits of the integers themselves. There is a small performance gain for this: name old time/op new time/op delta Hash-8 75.7µs ± 1% 76.0µs ± 2% ~ (p=0.315 n=10+9) HashMapAcyclic-8 63.1µs ± 3% 61.3µs ± 1% -2.77% (p=0.000 n=10+10) TailcfgNode-8 10.3µs ± 1% 10.2µs ± 1% -1.48% (p=0.000 n=10+10) HashArray-8 1.07µs ± 1% 1.05µs ± 1% -1.79% (p=0.000 n=10+10) Signed-off-by: Joe Tsai <joetsai@digital-static.net>	3 years ago
Joe Tsai	01d4dd331d	util/deephash: simplify hasher.hashMap (#2503 ) The swapping of bufio.Writer between hasher and mapHasher is subtle. Just embed a hasher in mapHasher to avoid complexity here. No notable change in performance: name old time/op new time/op delta Hash-8 76.7µs ± 1% 77.0µs ± 1% ~ (p=0.182 n=9+10) HashMapAcyclic-8 62.4µs ± 1% 62.5µs ± 1% ~ (p=0.315 n=10+9) TailcfgNode-8 10.3µs ± 1% 10.3µs ± 1% -0.62% (p=0.004 n=10+9) HashArray-8 1.07µs ± 1% 1.06µs ± 1% -0.98% (p=0.001 n=8+9) Signed-off-by: Joe Tsai <joetsai@digital-static.net>	3 years ago
Brad Fitzpatrick	be921d1a95	net/dns/resolver: fix skipped DoH test that bitrot Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Josh Bleecher Snyder	0373ba36f3	logtail: fix typo in comment Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
David Crawshaw	1606ef5219	logtail: print panics from previous runs on stderr Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	3 years ago
David Crawshaw	3e039daf95	logpolicy: actually collect panics (Written with Josh) For #2544 Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	3 years ago
Brad Fitzpatrick	7298e777d4	derp: reduce server memory by 30% by removing persistent bufio.Writer Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	5a7ff2b231	net/dnsfallback: re-run go generate	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
Matt Layher	effee49e45	net/interfaces: explicitly check netaddr.IP.Is6 in isUsableV6 Signed-off-by: Matt Layher <mdlayher@gmail.com>	3 years ago
Matt Layher	3ff8a55fa7	net/tsaddr: remove IsULA, replace with netaddr.IP.IsPrivate Signed-off-by: Matt Layher <mdlayher@gmail.com>	3 years ago
Brad Fitzpatrick	d37451bac6	cmd/derper: dial VPC address with right context Fix bug from just-submitted `e422e9f4c9`. Updates #2414 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	e422e9f4c9	cmd/derper: mesh over VPC network Updates #2414 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
David Crawshaw	0554b64452	ipnlocal: allow access to guest VMs/containers while using an exit node Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	3 years ago
Josh Bleecher Snyder	9da4181606	tstime/rate: new package This is a simplified rate limiter geared for exactly our needs: A fast, mono.Time-based rate limiter for use in tstun. It was generated by stripping down the x/time/rate rate limiter to just our needs and switching it to use mono.Time. It removes one time.Now call per packet. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	f6e833748b	wgengine: use mono.Time Migrate wgengine to mono.Time for performance-sensitive call sites. Signed-off-by: Josh Bleecher Snyder <josh@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
Josh Bleecher Snyder	c2202cc27c	net/tstun: use mono.Time There's a call to Now once per packet. Move to mono.Now. Though the current implementation provides high precision, we document it to be coarse, to preserve the ability to switch to a coarse monotonic time later. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	142670b8c2	tstime/mono: new package Package mono provides a fast monotonic time. Its primary advantage is that it is fast: It is approximately twice as fast as time.Now. This is because time.Now uses two clock calls, one for wall time and one for monotonic time. We ask for the current time 4-6 times per network packet. At ~50ns per call to time.Now, that's enough to show up in CPU profiles. Package mono is a first step towards addressing that. It is designed to be a near drop-in replacement for package time. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	881bb8bcdc	net/dns/resolver: allow an extra alloc for go closure allocation Go 1.17 switches to a register ABI on amd64 platforms. Part of that switch is that go and defer calls use an argument-less closure, which allocates. This means that we have an extra alloc in some DNS work. That's unfortunate but not a showstopper, and I don't see a clear path to fixing it. The other performance benefits from the register ABI will all but certainly outweigh this extra alloc. Fixes #2545 Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Brad Fitzpatrick	b6179b9e83	net/dnsfallback: add new nodes Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Pratik	2d35737a7a	Dockerfile: remove extra COPY step (#2355 ) Signed-off-by: pratikbalar <pratik@improwised.com>	3 years ago
Aaron Bieber	c179b9b535	cmd/tsshd: switch from github.com/kr/pty to github.com/creack/pty The kr/pty module moved to creack/pty per the kr/pty README[1]. creack/pty brings in support for a number of OS/arch combos that are lacking in kr/pty. Run `go mod tidy` while here. [1] https://github.com/kr/pty/blob/master/README.md Signed-off-by: Aaron Bieber <aaron@bolddaemon.com>	3 years ago
Brad Fitzpatrick	690ade4ee1	ipn/ipnlocal: add URL to IP forwarding error message Updates #606 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
David Crawshaw	f414a9cc01	net/dns/resolver: EDNS OPT record off-by-one I don't know how to get access to a real packet. Basing this commit entirely off: +------------+--------------+------------------------------+ \| Field Name \| Field Type \| Description \| +------------+--------------+------------------------------+ \| NAME \| domain name \| MUST be 0 (root domain) \| \| TYPE \| u_int16_t \| OPT (41) \| \| CLASS \| u_int16_t \| requestor's UDP payload size \| \| TTL \| u_int32_t \| extended RCODE and flags \| \| RDLEN \| u_int16_t \| length of all RDATA \| \| RDATA \| octet stream \| {attribute,value} pairs \| +------------+--------------+------------------------------+ From https://datatracker.ietf.org/doc/html/rfc6891#section-6.1.2 Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	3 years ago
Josh Bleecher Snyder	1034b17bc7	net/tstun: buffer outbound channel The handoff between tstun.Wrap's Read and poll methods is one of the per-packet hotspots. It shows up in pprof. Making outbound buffered increases throughput. It is hard to measure exactly how much, because the numbers are highly variable, but I'd estimate it at about 1%, using the best observed max throughput across three runs. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Josh Bleecher Snyder	965dccd4fc	net/tstun: buffer outbound channel The handoff between tstun.Wrap's Read and poll methods is one of the per-packet hotspots. It shows up in pprof. Making outbound buffered increases throughput. It is hard to measure exactly how much, because the numbers are highly variable, but I'd estimate it at about 1%, using the best observed max throughput across three runs. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Brad Fitzpatrick	7b9f02fcb1	cmd/tailscale/cli: document that empty string disable exit nodes, routes Updates #2529 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	d8d9036dbb	tailcfg: add Node.PrimaryRoutes Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	1b14e1d6bd	version: bump date Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Denton Gentry	bf7ad05230	VERSION.txt: this is v1.13.0. Signed-off-by: Denton Gentry <dgentry@tailscale.com>	3 years ago
Brad Fitzpatrick	68df379a7d	net/portmapper: rename ErrGatewayNotFound to ErrGatewayRange, reword text It confused & scared people. And it was just bad. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	aaf2df7ab1	net/{dnscache,interfaces}: use netaddr.IP.IsPrivate, delete copied code Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Christine Dodrill	dde8e28f00	disable vm tests on every commit to main This experiment apparently failed. Signed-off-by: Christine Dodrill <xe@tailscale.com>	3 years ago
Brad Fitzpatrick	c17d743886	net/dnscache: update a comment Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	281d503626	net/dnscache: make Dialer try all resolved IPs Tested manually with: $ go test -v ./net/dnscache/ -dial-test=bogusplane.dev.tailscale.com:80 Where bogusplane has three A records, only one of which works. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	dfa5e38fad	control/controlclient: report whether we're in a snap package Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	e299300b48	net/dnscache: cache all IPs per hostname Not yet used in the dialer, but plumbed around. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	7428ecfebd	ipn/ipnlocal: populate Hostinfo.Package on Android Fixes tailscale/corp#2266 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	5c266bdb73	wgengine: re-set DNS config on Linux after a major link change Updates #2458 (maybe fixes it) Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago

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