tailscale

Commit Graph

Author	SHA1	Message	Date
Josh Bleecher Snyder	aa9d7f4665	tstime: add Parse3339B, for byte slices Use go4.org/mem for memory safety. A slight performance hit, but a huge performance win for clients who start with a []byte. The perf hit is due largely to the MapHash call, which adds ~25ns. That is necessary to keep the fast path allocation-free. name old time/op new time/op delta GoParse3339/Z-8 281ns ± 1% 283ns ± 2% ~ (p=0.366 n=9+9) GoParse3339/TZ-8 509ns ± 0% 510ns ± 1% ~ (p=0.059 n=9+9) GoParse3339InLocation-8 330ns ± 1% 330ns ± 0% ~ (p=0.802 n=10+6) Parse3339/Z-8 69.3ns ± 1% 74.4ns ± 1% +7.45% (p=0.000 n=9+10) Parse3339/TZ-8 110ns ± 1% 140ns ± 3% +27.42% (p=0.000 n=9+10) ParseInt-8 8.20ns ± 1% 8.17ns ± 1% ~ (p=0.452 n=9+9) name old alloc/op new alloc/op delta GoParse3339/Z-8 0.00B 0.00B ~ (all equal) GoParse3339/TZ-8 160B ± 0% 160B ± 0% ~ (all equal) GoParse3339InLocation-8 0.00B 0.00B ~ (all equal) Parse3339/Z-8 0.00B 0.00B ~ (all equal) Parse3339/TZ-8 0.00B 0.00B ~ (all equal) name old allocs/op new allocs/op delta GoParse3339/Z-8 0.00 0.00 ~ (all equal) GoParse3339/TZ-8 3.00 ± 0% 3.00 ± 0% ~ (all equal) GoParse3339InLocation-8 0.00 0.00 ~ (all equal) Parse3339/Z-8 0.00 0.00 ~ (all equal) Parse3339/TZ-8 0.00 0.00 ~ (all equal) Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	a5dd0bcb09	util/jsonutil: new package The cornerstone API is a more memory-efficient Unmarshal. The savings come from re-using a json.Decoder. BenchmarkUnmarshal-8 4016418 288 ns/op 8 B/op 1 allocs/op BenchmarkStdUnmarshal-8 4189261 283 ns/op 184 B/op 2 allocs/op It also includes a Bytes type to reduce allocations when unmarshalling a non-hex-encoded JSON string into a []byte. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	b65eee0745	util/lineread: add docs to Reader In particular, point out how to stop reading and detect it on the other side. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	1ebbaaaebb	net/interfaces: make syscall and netstat agree when multiple gateways are present likelyHomeRouterIPDarwinSyscall iterates through the list of routes, looking for a private gateway, returning the first one it finds. likelyHomeRouterIPDarwinExec does the same thing, except that it returns the last one it finds. As a result, when there are multiple gateways, TestLikelyHomeRouterIPSyscallExec fails. (At least, I think that that is what is happening; I am going inferring from observed behavior.) Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Brad Fitzpatrick	eccc167733	wgengine/monitor: fix memory corruption in Windows implementation I used the Windows APIs wrong previously, but it had worked just enough. Updates #921 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Brad Fitzpatrick	8f76548fd9	tempfork/osexec: remove old fork of os/exec This package was a temporary fork of os/exec to fix an EINTR loop bug that was fixed upstream for Go 1.15 in `8c1db77a92` (https://go-review.googlesource.com/c/go/+/232862), in src/os/exec_unix.go: `8c1db77a92 (diff-72072cbd53a7240debad8aa506ff7ec795f9cfac7322e779f9bac29a4d0d0bd4)`	4 years ago
Brad Fitzpatrick	5b338bf011	tempfork/registry: delete It's unused.	4 years ago
Brad Fitzpatrick	acade77c86	ipn/ipnserver: add knob to disable babysitter	4 years ago
Brad Fitzpatrick	5d96ecd5e6	net/netstat: remove a bit more unsafe Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Brad Fitzpatrick	c8939ab7c7	util/endian: add Native variable to get the platform's native binary.ByteOrder Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Josh Bleecher Snyder	883a11f2a8	logtail: fix typo in comment Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Brad Fitzpatrick	d9e2edb5ae	wgengine: reconfigure wireguard peer in two steps when its disco key changes First remove the device (to clear its wireguard session key), and then add it back. Fixes #929 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
David Anderson	3c508a58cc	wgengine/filter: don't filter GCP DNS. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
Brad Fitzpatrick	51c8fd1dfc	logpolicy: add -race suffix to Go version when race detector in use	4 years ago
Brad Fitzpatrick	ff50ddf1ee	util/racebuild: add package to export a race-is-enabled const	4 years ago
Brad Fitzpatrick	fc8bc76e58	wgengine/router: lock goroutine to OS thread before using OLE [windows] See https://github.com/tailscale/tailscale/issues/921#issuecomment-727526807 Not yet sure whether this is our problem, but it can't hurt at least, and seems like what we're supposed to do. Updates #921	4 years ago
Brad Fitzpatrick	7a01cd27ca	net/netstat: remove some unsafe Just removing any unnecessary unsafe while auditing unsafe usage for #921.	4 years ago
Brad Fitzpatrick	45d96788b5	net/netns: remove use of unsafe on Windows Found while auditing unsafe for #921 via the list at: https://github.com/tailscale/tailscale/issues/921#issuecomment-727365383 No need for unsafe here, so remove it.	4 years ago
Brad Fitzpatrick	000347d4cf	util/endian: add package with const for whether platform is big endian	4 years ago
Josh Bleecher Snyder	b0526e8284	net/packet: remove unnecessary mark There's no need to mask out the bottom four bits of b[0] if we are about to shift them away.	4 years ago
Josh Bleecher Snyder	efad55cf86	net/packet: speed up packet decoding The compiler is failing to draw the connection between slice cap and slice len, so is missing some obvious BCE opportunities. Give it a hint by making the cap equal to the length. The generated code is smaller and cleaner, and a bit faster. name old time/op new time/op delta Decode/tcp4-8 12.2ns ± 1% 11.6ns ± 3% -5.31% (p=0.000 n=28+29) Decode/tcp6-8 12.5ns ± 2% 11.9ns ± 2% -4.84% (p=0.000 n=30+30) Decode/udp4-8 11.5ns ± 1% 11.1ns ± 1% -3.11% (p=0.000 n=25+24) Decode/udp6-8 11.8ns ± 3% 11.4ns ± 1% -3.08% (p=0.000 n=30+26) Decode/icmp4-8 11.0ns ± 3% 10.6ns ± 1% -3.38% (p=0.000 n=25+30) Decode/icmp6-8 11.4ns ± 1% 11.1ns ± 2% -2.29% (p=0.000 n=27+30) Decode/igmp-8 10.3ns ± 0% 10.0ns ± 1% -3.26% (p=0.000 n=19+23) Decode/unknown-8 8.68ns ± 1% 8.38ns ± 1% -3.55% (p=0.000 n=28+29)	4 years ago
Brad Fitzpatrick	cccdd81441	go.mod: update some deps to get past a wireguard-windows checkptr fix	4 years ago
David Anderson	2eb474dd8d	wgengine/filter: add test cases for len(dsts) > 1. While the code was correct, I broke it during a refactoring and tests didn't detect it. This fixes that glitch. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	ce45f4f3ff	wgengine/filter: inline ip6InList into match. matchIPsOnly gets 5% slower when inlining, despite significantly reduced memory ops and slightly tighter code. Part of #19. Filter/tcp6_syn_in-8 45.5ns ± 1% 42.4ns ± 2% -6.86% (p=0.000 n=10+10) Filter/udp6_in-8 107ns ± 2% 94ns ± 2% -11.50% (p=0.000 n=9+10) Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	3fdae12f0c	wgengine/filter: eliminate unnecessary memory loads. Doesn't materially affect benchmarks, but shrinks match6 by 30 instructions and halves memory loads. Part of #19. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
Josh Bleecher Snyder	47380ebcfb	wgengine/filter: twiddle bits to optimize Part of #19. name old time/op new time/op delta Filter/icmp4-8 32.2ns ± 3% 32.5ns ± 2% ~ (p=0.524 n=10+8) Filter/icmp6-8 49.7ns ± 6% 43.1ns ± 4% -13.12% (p=0.000 n=9+10) Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	5062131aad	wgengine/filter: treat * as both a v4 and v6 wildcard. Part of #19. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	2d604b3791	net/packet: represent IP6 as two uint64s. For the operations we perform on these types (mostly net6.Contains), this encoding is much faster. Part of #19. name old time/op new time/op delta Filter/icmp4-8 27.5ns ± 1% 28.0ns ± 2% +1.89% (p=0.016 n=5+5) Filter/tcp4_syn_in-8 38.8ns ± 2% 38.3ns ± 1% -1.24% (p=0.024 n=5+5) Filter/tcp4_syn_out-8 27.6ns ±12% 24.6ns ± 1% ~ (p=0.063 n=5+5) Filter/udp4_in-8 71.5ns ± 5% 65.9ns ± 1% -7.94% (p=0.008 n=5+5) Filter/udp4_out-8 132ns ±13% 119ns ± 1% -10.29% (p=0.008 n=5+5) Filter/icmp6-8 169ns ±10% 54ns ± 1% -68.35% (p=0.008 n=5+5) Filter/tcp6_syn_in-8 149ns ± 6% 43ns ± 1% -71.11% (p=0.008 n=5+5) Filter/tcp6_syn_out-8 37.7ns ± 4% 24.3ns ± 3% -35.51% (p=0.008 n=5+5) Filter/udp6_in-8 179ns ± 5% 103ns ± 1% -42.75% (p=0.008 n=5+5) Filter/udp6_out-8 156ns ± 3% 191ns ± 1% +22.54% (p=0.008 n=5+5) Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	04ff3c91ee	wgengine/filter: add full IPv6 support. Part of #19. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
Brad Fitzpatrick	fac2b30eff	control/controlclient: diagnose zero bytes from control Updates #921 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
David Anderson	a664aac877	wgengine/router: disable IPv6 if v6 policy routing is unavailable. Fixes #895. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
Brad Fitzpatrick	a2d78b4d3e	net/dnscache, control/controlclient: use DNS cache when dialing control Cache DNS results of earlier login.tailscale.com control dials, and use them for future dials if DNS is slow or broken. Fixes various issues with trickier setups with the domain's DNS server behind a subnet router. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Brad Fitzpatrick	97e82c6cc0	net/netcheck: remove unused DNSCache from netcheck It's easy to add back later if/when the TODO is implemented.	4 years ago
Brad Fitzpatrick	19b0cfe89e	all: prepare for GOOS=ios in Go 1.16 Work with either way for now on iOS (darwin/arm64 vs ios/arm64). In February when Go 1.16 comes out we'll have a universal binary for darwin/arm64 (macOS) and will drop support for Go 1.15 and its darwin/amd64 meaning iOS. (it'll mean macOS). Context: * https://tip.golang.org/doc/go1.16#darwin * https://github.com/golang/go/issues/38485 * https://github.com/golang/go/issues/42100	4 years ago
Sean Klein	258b680bc5	Patch docker to use valid Go version As documented in the README, tailscale only build with the latest Go version (Go 1.15). As a result, a handful of undefined errors would pop up using an older verison. This patch updates the base image to 1.15, allowing "docker build" to function correctly once more. Signed-off-by: Sean Klein <seanmarionklein@gmail.com>	4 years ago
Avery Pennarun	563d43b2a5	Merge remote-tracking branch 'origin/main' into HEAD * origin/main: net/packet: documentation pass. net/packet: remove NewIP, offer only a netaddr constructor. net/packet: documentation cleanups. net/packet: fix panic on invalid IHL field. net/packet: remove {get,put}{16,32} indirection to encoding/binary. net/packet: support full IPv6 decoding. net/packet: add IPv6 source and destination IPs to Parsed.	4 years ago
Avery Pennarun	b246810377	.gitignore: ignore .tmp files. This fixes the problem where, while running `redo version-info.sh`, the repo would always show up as dirty, because redo creates a temp file named .tmp. This caused the version code to always have a -dirty tag, but not when you run version.sh by hand. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	4 years ago
Avery Pennarun	c03543dbe2	version.sh: keep the short version even if there are patches on top. Instead of reverting to 0.0.0, keep the same version number (eg. 1.2.4) but add an extra suffix with the change count, eg. 1.2.4-6-tb35d95ad7-gcb8be72e6. This avoids the problem where a small patch causes the code to report a totally different version to the server, which might change its behaviour based on version code. (The server might enable various bug workarounds since it thinks 0.0.0 is very old.) Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	4 years ago
Avery Pennarun	0050070493	version.sh: remove use of `git describe --exclude` This option isn't available on slightly older versions of git. We were no longer using the real describe functionality anyway, so let's just do something simpler to detect a dirty worktree. While we're here, fix up a little bit of sh style. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	4 years ago
Avery Pennarun	f99f6608ff	Reverse earlier "allow tag without 'tag:' prefix" changes. These accidentally make the tag syntax more flexible than was intended, which will create forward compatibility problems later. Let's go back to the old stricter parser. Revert "cmd/tailscale/cli: fix double tag: prefix in tailscale up" Revert "cmd/tailscale/cli, tailcfg: allow tag without "tag:" prefix in 'tailscale up'" This reverts commit `a702921620`. This reverts commit `cd07437ade`. Affects #861. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	4 years ago
David Anderson	a38e28da07	net/packet: documentation pass. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	c2cc3acbaf	net/packet: remove NewIP, offer only a netaddr constructor. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	d7ee3096dd	net/packet: documentation cleanups. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	9ef39af2f2	net/packet: fix panic on invalid IHL field. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	22bf48f37c	net/packet: remove {get,put}{16,32} indirection to encoding/binary. name old time/op new time/op delta Decode/tcp4-8 28.8ns ± 2% 13.1ns ± 4% -54.44% (p=0.008 n=5+5) Decode/tcp6-8 20.6ns ± 1% 12.6ns ± 2% -38.72% (p=0.008 n=5+5) Decode/udp4-8 28.2ns ± 1% 12.1ns ± 4% -57.01% (p=0.008 n=5+5) Decode/udp6-8 20.0ns ± 6% 12.1ns ± 2% -39.38% (p=0.008 n=5+5) Decode/icmp4-8 21.7ns ± 2% 11.5ns ± 1% -47.01% (p=0.008 n=5+5) Decode/icmp6-8 14.1ns ± 2% 11.8ns ± 4% -16.60% (p=0.008 n=5+5) Decode/unknown-8 9.43ns ± 2% 9.30ns ± 3% ~ (p=0.222 n=5+5) Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	55b1221db2	net/packet: support full IPv6 decoding. The packet filter still rejects all IPv6, but decodes enough from v6 packets to do something smarter in a followup. name time/op Decode/tcp4-8 28.8ns ± 2% Decode/tcp6-8 20.6ns ± 1% Decode/udp4-8 28.2ns ± 1% Decode/udp6-8 20.0ns ± 6% Decode/icmp4-8 21.7ns ± 2% Decode/icmp6-8 14.1ns ± 2% Decode/unknown-8 9.43ns ± 2% Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	89894c6930	net/packet: add IPv6 source and destination IPs to Parsed. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
Brad Fitzpatrick	d192bd0f86	net/interfaces: ignore bogus proxy URLs from winhttp [windows] Updates tailscale/corp#853	4 years ago
Brad Fitzpatrick	d21956436a	ipn, tailcfg: change Windows subnet disabling behavior w/ WPAD In 1.0, subnet relays were not specially handled when WPAD+PAC was present on the network. In 1.2, on Windows, subnet relays were disabled if WPAD+PAC was present. That was what some users wanted, but not others. This makes it configurable per domain, reverting back to the 1.0 default state of them not being special. Users who want that behavior can then enable it. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	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

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