928 Commits (cbd0b60743008e01d7ef97f9e7ef8dd02328bc40)

Author	SHA1	Message	Date
Andrew Dunham	c86a610eb3	cmd/tailscale, net/portmapper: add --log-http option to "debug portmap" ... This option allows logging the raw HTTP requests and responses that the portmapper Client makes when using UPnP. This can be extremely helpful when debugging strange UPnP issues with users' devices, and might allow us to avoid having to instruct users to perform a packet capture. Updates #8992 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I2c3cf6930b09717028deaff31738484cc9b008e4	1 year ago
Brad Fitzpatrick	98a5116434	all: adjust some build tags for plan9 ... I'm not saying it works, but it compiles. Updates #5794 Change-Id: I2f3c99732e67fe57a05edb25b758d083417f083e Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
Brad Fitzpatrick	d58ba59fd5	cmd/tailscale/cli: make netcheck run even if machine lacks TLS certs ... We have a fancy package for doing TLS cert validation even if the machine doesn't have TLS certs (for LetsEncrypt only) but the CLI's netcheck command wasn't using it. Also, update the tlsdial's outdated package docs while here. Updates #cleanup Change-Id: I74b3cb645d07af4d8ae230fb39a60c809ec129ad Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
Brad Fitzpatrick	e881c1caec	net/netmon: factor out debounce loop, simplify polling impl ... This simplifies some netmon code in prep for other changes. It breaks up Monitor.debounce into a helper method so locking is easier to read and things unindent, and then it simplifies the polling netmon implementation to remove the redundant stuff that the caller (the Monitor.debounce loop) was already basically doing. Updates #9040 Change-Id: Idcfb45201d00ae64017042a7bdee6ef86ad37a9f Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
Brad Fitzpatrick	9089efea06	net/netmon: make ChangeFunc's signature take new ChangeDelta, not bool ... Updates #9040 Change-Id: Ia43752064a1a6ecefc8802b58d6eaa0b71cf1f84 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
Andrew Dunham	77ff705545	net/portmapper: never select port 0 in UPnP ... Port 0 is interpreted, per the spec (but inconsistently among router software) as requesting to map every single available port on the UPnP gateway to the internal IP address. We'd previously avoided picking ports below 1024 for one of the two UPnP methods (in #7457), and this change moves that logic so that we avoid it in all cases. Updates #8992 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I20d652c0cd47a24aef27f75c81f78ae53cc3c71e	1 year ago
Brad Fitzpatrick	58a4fd43d8	types/netmap, all: use read-only tailcfg.NodeView in NetworkMap ... Updates #8948 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
Brad Fitzpatrick	6e57dee7eb	cmd/viewer, types/views, all: un-special case slice of netip.Prefix ... Make it just a views.Slice[netip.Prefix] instead of its own named type. Having the special case led to circular dependencies in another WIP PR of mine. Updates #8948 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
David Anderson	e92adfe5e4	net/art: allow non-pointers as values ... Values are still turned into pointers internally to maintain the invariants of strideTable, but from the user's perspective it's now possible to tbl.Insert(pfx, true) rather than tbl.Insert(pfx, ptr.To(true)). Updates #7781 Signed-off-by: David Anderson <danderson@tailscale.com>	1 year ago
Brad Fitzpatrick	e8551d6b40	all: use Go 1.21 slices, maps instead of x/exp/{slices,maps} ... Updates #8419 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
David Anderson	623d72c83b	net/art: move child table pointers out of strideEntry ... In preparation for a different refactor, but incidentally also saves 10-25% memory on overall table size in benchmarks. Updates #7781 Signed-off-by: David Anderson <danderson@tailscale.com>	1 year ago
James Tucker	de8e55fda6	net/netcheck,wgengine/magicsock: reduce coupling between netcheck and magicsock ... Netcheck no longer performs I/O itself, instead it makes requests via SendPacket and expects users to route reply traffic to ReceiveSTUNPacket. Netcheck gains a Standalone function that stands up sockets and goroutines to implement I/O when used in a standalone fashion. Magicsock now unconditionally routes STUN traffic to the netcheck.Client that it hosts, and plumbs the send packet sink. The CLI is updated to make use of the Standalone mode. Fixes #8723 Signed-off-by: James Tucker <james@tailscale.com>	1 year ago
Maisem Ali	98ec8924c2	ipn/ipnlocal,net/tsdial: update docs/rename funcs ... Updates #cleanup Signed-off-by: Maisem Ali <maisem@tailscale.com>	1 year ago
Will Norris	69f1324c9e	cmd/tailscale: refactor shared utility methods ... Refactor two shared functions used by the tailscale cli, calcAdvertiseRoutes and licensesURL. These are used by the web client as well as other tailscale subcommands. The web client is being moved out of the cli package, so move these two functions to new locations. Updates tailscale/corp#13775 Signed-off-by: Will Norris <will@tailscale.com>	1 year ago
Brad Fitzpatrick	be4eb6a39e	derp, net/dns/recursive: use Go 1.21 min ... Updates #8419 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
Brad Fitzpatrick	66e46bf501	ipnlocal, net/*: deprecate interfaces.GetState, use netmon more for it ... Updates #cleanup Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
David Anderson	52212f4323	all: update exp/slices and fix call sites ... slices.SortFunc suffered a late-in-cycle API breakage. Updates #cleanup Signed-off-by: David Anderson <danderson@tailscale.com>	1 year ago
David Anderson	6afffece8a	net/art: use more intelligible, go-ish state tracking in table.Get ... Updates #7781 Signed-off-by: David Anderson <danderson@tailscale.com>	1 year ago
David Anderson	4f14ed2ad6	net/art: use encoding/binary for address bit twiddling ... Updates #7781 Signed-off-by: David Anderson <danderson@tailscale.com>	1 year ago
David Anderson	f1cd67488d	net/art: move slice closer to its use ... Updates #7781 Signed-off-by: David Anderson <danderson@tailscale.com>	1 year ago
David Anderson	44ad7b3746	net/art: factor out picking the right strideTable for addr family ... Updates #7781 Signed-off-by: David Anderson <danderson@tailscale.com>	1 year ago
David Anderson	125b982ba5	net/art: make Table.Get alloc-free ... Updates #7781 Signed-off-by: David Anderson <danderson@tailscale.com>	1 year ago
David Anderson	b76d8a88ae	net/art: document return value of strideTable.delete ... Updates #7781 Signed-off-by: David Anderson <danderson@tailscale.com>	1 year ago
David Anderson	b242e2c2cb	net/art: reword confusing function docstring ... Updates #7781 Signed-off-by: David Anderson <danderson@tailscale.com>	1 year ago
David Anderson	8478358d77	net/art: use "index", not "idx" in function names ... Updates #7781 Signed-off-by: David Anderson <danderson@tailscale.com>	1 year ago
David Anderson	de5c6ed4be	net/art: document valid values of strideTable.prefix ... Updates #7781 Signed-off-by: David Anderson <danderson@tailscale.com>	1 year ago
David Anderson	736a44264f	net/art: fix comment typo ... Updates #7781 Signed-off-by: David Anderson <danderson@tailscale.com>	1 year ago
David Anderson	1e6f0bb608	net/art: fix slowPrefixTable bugs found by fuzzing ... One is a straight "I forgot how to Go" bug, the others are semantic mismatches with the main implementation around masking the prefixes passed to insert/delete. Updates #7781 Signed-off-by: David Anderson <danderson@tailscale.com>	1 year ago
David Anderson	aaca911904	net/art: add another consistency test for insert/delete ... Updates #7781 Signed-off-by: David Anderson <danderson@tailscale.com>	1 year ago
David Anderson	b145a22f55	net/art: add more exhaustive table testing ... Updates #7781 Signed-off-by: David Anderson <danderson@tailscale.com>	1 year ago
David Anderson	9cc3f7a3d6	net/art: fix format of debug output ... Updates #7781 Signed-off-by: David Anderson <danderson@tailscale.com>	1 year ago
David Anderson	ac657caaf1	net/art: add debug hooks to strideTable ... Updates #7781 Signed-off-by: David Anderson <danderson@tailscale.com>	1 year ago
David Anderson	fcf4d044fa	net/art: implement path compression optimization ... Updates #7781 Signed-off-by: David Anderson <danderson@tailscale.com>	1 year ago
David Anderson	486195edf0	net/art: make each strideTable track the IP prefix it represents ... This is a prerequisite for path compression, so that insert/delete can determine when compression occurred. Updates #7781 Signed-off-by: David Anderson <danderson@tailscale.com>	1 year ago
David Anderson	45b5d0983c	net/art: fix running tests outside of CI ... Updates #7866 Signed-off-by: David Anderson <danderson@tailscale.com>	1 year ago
Michael Stapelberg	2a6c237d4c	net/dns: overwrite /tmp/resolv.conf on gokrazy ... Appliances built using https://gokrazy.org/ have a read-only root file system, including /etc/resolv.conf, which is a symlink to /tmp/resolv.conf. The system’s dhcp client overwrites /tmp/resolv.conf instead, so we need to use this path in Tailscale, too. related to https://github.com/gokrazy/gokrazy/issues/209 fixes https://github.com/tailscale/tailscale/issues/8689 Signed-off-by: Michael Stapelberg <michael@stapelberg.de>	1 year ago
Anton Tolchanov	388b124513	net/dns: detect when libnss_resolve is used ... Having `127.0.0.53` is not the only way to use `systemd-resolved`. An alternative way is to enable `libnss_resolve` module, which seems to now be used by default on Debian 12 bookworm. Fixes #8549 Signed-off-by: Anton Tolchanov <anton@tailscale.com>	1 year ago
Andrew Dunham	9b5e29761c	net/netcheck: ignore PreferredDERP changes that are small ... If the absolute value of the difference between the current PreferredDERP's latency and the best latency is <= 10ms, don't change it and instead prefer the previous value. This is in addition to the existing hysteresis that tries to remain on the previous DERP region if the relative improvement is small, but handles nodes that have low latency to >1 DERP region better. Updates #8603 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I1e34c94178f8c9a68a69921c5bc0227337514c70	1 year ago
Andrew Dunham	7aba0b0d78	net/netcheck, tailcfg: add DERPHomeParams and use it ... This allows providing additional information to the client about how to select a home DERP region, such as preferring a given DERP region over all others. Updates #8603 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I7c4a270f31d8585112fab5408799ffba5b75266f	1 year ago
Andrew Dunham	a7648a6723	net/dnsfallback: run recursive resolver and compare results ... When performing a fallback DNS query, run the recursive resolver in a separate goroutine and compare the results returned by the recursive resolver with the results we get from "regular" bootstrap DNS. This will allow us to gather data about whether the recursive DNS resolver works better, worse, or about the same as "regular" bootstrap DNS. Updates #5853 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: Ifa0b0cc9eeb0dccd6f7a3d91675fe44b3b34bd48	1 year ago
Adrian Dewhurst	cd4c71c122	tstest: prepare for Clock API changes ... This change introduces tstime.NewClock and tstime.ClockOpts as a new way to construct tstime.Clock. This is a subset of #8464 as a stepping stone so that we can update our internal code to use the new API before making the second round of changes. Updates #8463 Change-Id: Ib26edb60e5355802aeca83ed60e4fdf806c90e27 Signed-off-by: Adrian Dewhurst <adrian@tailscale.com>	1 year ago
Andrew Dunham	d9eca20ee2	net/tcpinfo: add package to allow fetching TCP information ... This package contains platform-independent abstractions for fetching information about an open TCP connection. Updates #8413 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I236657b1060d7e6a45efc7a2f6aacf474547a2fe	1 year ago
KevinLiang10	243ce6ccc1	util/linuxfw: decoupling IPTables logic from linux router ... This change is introducing new netfilterRunner interface and moving iptables manipulation to a lower leveled iptables runner. For #391 Signed-off-by: KevinLiang10 <kevinliang@tailscale.com>	1 year ago
Ross Zurowski	832f1028c7	net/netutil: parse IP forwarding val as int, not bool (#8455) ... This commit updates our IP forwarding parsing logic to allow the less common but still valid value of `2` to be parsed as `true`, which fixes an error some users encountered. Fixes #8375 Signed-off-by: Ross Zurowski <ross@rosszurowski.com>	1 year ago
Brad Fitzpatrick	a874f1afd8	all: adjust case of "IPv4" and "IPv6" ... Updates #docs Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
Andrew Dunham	b6d20e6f8f	go.mod, net/dns/recursive: update github.com/miekg/dns ... Updates #cleanup Change-Id: If4de6a84448a17dd81cc2a8af788bd18c3d0bbe3 Signed-off-by: Andrew Dunham <andrew@du.nham.ca>	1 year ago
Brad Fitzpatrick	a076213f58	net/memnet: add optional Listener.NewConn config knob ... Updates tailscale/corp#11620 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
Brad Fitzpatrick	1543e233e6	net/tstun, tsnet: make happier on WASI ... Also fix a js/wasm issue with tsnet in the process. (same issue as WASI) Updates #8320 Fixes #8315 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
Andrew Dunham	f077b672e4	net/dns/recursive: add initial implementation of recursive DNS resolver ... We've talked in the past about reworking how bootstrap DNS works to instead do recursive DNS resolution from the root; this would better support on-prem customers and Headscale users where the DERP servers don't currently resolve their DNS server. This package is an initial implementation of recursive resolution for A and AAAA records. Updates #5853 Change-Id: Ibe974d78709b4b03674b47c4ef61f9a00addf8b4 Signed-off-by: Andrew Dunham <andrew@du.nham.ca>	1 year ago
Brad Fitzpatrick	eefee6f149	all: use cmpx.Or where it made sense ... I left a few out where writing it explicitly was better for various reasons. Updates #8296 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
Denton Gentry	64f16f7f38	net/dnscache: use PreferGo on Windows. ... Updates https://github.com/tailscale/tailscale/issues/5161 Signed-off-by: Denton Gentry <dgentry@tailscale.com>	1 year ago
James Tucker	da90fab899	net/netcheck: reenable TestBasic on Windows ... This test was either fixed by intermediate changes or was mis-flagged as failing during #7876 triage. Updates #7876 Signed-off-by: James Tucker <jftucker@gmail.com>	2 years ago
Will Norris	ea84fc9ad2	net/sockstats: wait before reporting battery usage ... Wait 2 minutes before we start reporting battery usage. There is always radio activity on initial startup, which gets reported as 100% high power usage. Let that settle before we report usage data. Updates tailscale/corp#9230 Signed-off-by: Will Norris <will@tailscale.com>	2 years ago
James Tucker	9ed3a061c3	net/netns: fix segv when no tailscale interface is found ... `interfaces.Tailscale()` returns all zero values when it finds no Tailscale interface and encounters no errors. The netns package was treating no error as a signal that it would receive a non-zero pointer value leading to nil pointer dereference. Observed in: ``` --- FAIL: TestGetInterfaceIndex (0.00s) --- FAIL: TestGetInterfaceIndex/IP_and_port (0.00s) panic: runtime error: invalid memory address or nil pointer dereference [recovered] panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x2 addr=0x0 pc=0x1029eb7d8] goroutine 7 [running]: testing.tRunner.func1.2({0x102a691e0, 0x102bc05c0}) /Users/raggi/.cache/tailscale-go/src/testing/testing.go:1526 +0x1c8 testing.tRunner.func1() /Users/raggi/.cache/tailscale-go/src/testing/testing.go:1529 +0x384 panic({0x102a691e0, 0x102bc05c0}) /Users/raggi/.cache/tailscale-go/src/runtime/panic.go:884 +0x204 tailscale.com/net/netns.getInterfaceIndex(0x14000073f28, 0x1028d0284?, {0x1029ef3b7, 0xa}) /Users/raggi/src/github.com/tailscale/tailscale/net/netns/netns_darwin.go:114 +0x228 tailscale.com/net/netns.TestGetInterfaceIndex.func2(0x14000138000) /Users/raggi/src/github.com/tailscale/tailscale/net/netns/netns_darwin_test.go:37 +0x54 testing.tRunner(0x14000138000, 0x140000551b0) /Users/raggi/.cache/tailscale-go/src/testing/testing.go:1576 +0x10c created by testing.(*T).Run /Users/raggi/.cache/tailscale-go/src/testing/testing.go:1629 +0x368 FAIL tailscale.com/net/netns 0.824s ``` Fixes #8064 Signed-off-by: James Tucker <jftucker@gmail.com>	2 years ago
Brad Fitzpatrick	6e967446e4	tsd: add package with System type to unify subsystem init, discovery ... This is part of an effort to clean up tailscaled initialization between tailscaled, tailscaled Windows service, tsnet, and the mac GUI. Updates #8036 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Maisem Ali	3ae7140690	net/tstun: handle exit nodes in NAT configs ... In the case where the exit node requires SNAT, we would SNAT all traffic not just the traffic meant to go through the exit node. This was a result of the default route being added to the routing table which would match basically everything. In this case, we need to account for all peers in the routing table not just the ones that require NAT. Fix and add a test. Updates tailscale/corp#8020 Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Charlotte Brandhorst-Satzkorn	161d1d281a	net/ping,netcheck: add v6 pinging capabilities to pinger (#7971) ... This change adds a v6conn to the pinger to enable sending pings to v6 addrs. Updates #7826 Signed-off-by: Charlotte Brandhorst-Satzkorn <charlotte@tailscale.com>	2 years ago
Maisem Ali	f58751eb2b	net/packet: add NAT support for DCCP and GRE ... Updates tailscale/corp#8020 Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Brad Fitzpatrick	90ba26cea1	net/netcheck: fix crash when IPv6 kinda but not really works ... Looks like on some systems there's an IPv6 address, but then opening a IPv6 UDP socket fails later. Probably some firewall. Tolerate it better and don't crash. To repro: check the "udp6" to something like "udp7" (something that'll fail) and run "go run ./cmd/tailscale netcheck" on a machine with active IPv6. It used to crash and now it doesn't. Fixes #7949 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Andrew Dunham	04a3118d45	net/tstun: add tests for captureHook ... Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I630f852d9f16c951c721b34f2bc4128e68fe9475	2 years ago
Mihai Parparita	7330aa593e	all: avoid repeated default interface lookups ... On some platforms (notably macOS and iOS) we look up the default interface to bind outgoing connections to. This is both duplicated work and results in logspam when the default interface is not available (i.e. when a phone has no connectivity, we log an error and thus cause more things that we will try to upload and fail). Fixed by passing around a netmon.Monitor to more places, so that we can use its cached interface state. Fixes #7850 Updates #7621 Signed-off-by: Mihai Parparita <mihai@tailscale.com>	2 years ago
Mihai Parparita	4722f7e322	all: move network monitoring from wgengine/monitor to net/netmon ... We're using it in more and more places, and it's not really specific to our use of Wireguard (and does more just link/interface monitoring). Also removes the separate interface we had for it in sockstats -- it's a small enough package (we already pull in all of its dependencies via other paths) that it's not worth the extra complexity. Updates #7621 Updates #7850 Signed-off-by: Mihai Parparita <mihai@tailscale.com>	2 years ago
Andrew Dunham	f85dc6f97c	ci: add more lints (#7909) ... This is a follow-up to #7905 that adds two more linters and fixes the corresponding findings. As per the previous PR, this only flags things that are "obviously" wrong, and fixes the issues found. Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I8739bdb7bc4f75666a7385a7a26d56ec13741b7c	2 years ago
Maisem Ali	85de580455	net/tsdial: do not use proxies when dialing out to PeerAPI ... Found this when adding a test that does a ping over PeerAPI. Our integration tests set up a trafficTrap to ensure that tailscaled does not call out to the internet, and it does so via a HTTP_PROXY. When adding a test for pings over PeerAPI, it triggered the trap and investigation lead to the realization that we were not removing the Proxy when trying to dial out to the PeerAPI. Updates tailscale/corp#8020 Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Mihai Parparita	d0906cda97	net/sockstats: expose debug info ... Exposes some internal state of the sockstats package via the C2N and PeerAPI endpoints, so that it can be used for debugging. For now this includes the estimated radio on percentage and a second-by-second view of the times the radio was active. Also fixes another off-by-one error in the radio on percentage that was leading to >100% values (if n seconds have passed since we started to monitor, there may be n + 1 possible seconds where the radio could have been on). Updates tailscale/corp#9230 Signed-off-by: Mihai Parparita <mihai@tailscale.com>	2 years ago
Will Norris	7c386ca6d2	net/sockstats: fix calculation of radio power usage ... When splitting the radio monitor usage array, we were splitting at now % 3600 to get values into chronological order. This caused the value for the final second to be included at the beginning of the ordered slice rather than the end. If there was activity during that final second, an extra five seconds of high power usage would get recorded in some cases. This could result in a final calculation of greater than 100% usage. This corrects that by splitting values at (now+1 % 3600). This also simplifies the percentage calculation by always rounding values down, which is sufficient for our usage. Signed-off-by: Will Norris <will@tailscale.com>	2 years ago
Mihai Parparita	c7cea825ae	net/netns: don't log errors when we can't get the default route on Darwin ... It's somewhat common (e.g. when a phone has no reception), and leads to lots of logspam. Updates #7850 Signed-off-by: Mihai Parparita <mihai@tailscale.com>	2 years ago
Andrew Dunham	280255acae	various: add golangci-lint, fix issues (#7905) ... This adds an initial and intentionally minimal configuration for golang-ci, fixes the issues reported, and adds a GitHub Action to check new pull requests against this linter configuration. Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I8f38fbc315836a19a094d0d3e986758b9313f163	2 years ago
Joe Tsai	ff1b35ec6c	net/connstats: exclude traffic with internal Tailscale service (#7904) ... Exclude traffic with 100.100.100.100 (for IPv4) and with fd7a:115c:a1e0::53 (for IPv6) since this traffic with the Tailscale service running locally on the node. This traffic never left the node. It also happens to be a high volume amount of traffic since DNS requests occur over UDP with each request coming from a unique port, thus resulting in many discrete traffic flows. Fixes tailscale/corp#10554 Signed-off-by: Joe Tsai <joetsai@digital-static.net>	2 years ago
Mihai Parparita	9a655a1d58	net/dnsfallback: more explicitly pass through logf function ... Redoes the approach from #5550 and #7539 to explicitly pass in the logf function, instead of having global state that can be overridden. Signed-off-by: Mihai Parparita <mihai@tailscale.com>	2 years ago
Brad Fitzpatrick	162488a775	net/interfaces: cache "home" router lookup on big Linux routers ... This is a continuation of the earlier 2a67beaacf but more aggressive; this now remembers that we failed to find the "home" router IP so we don't try again later on the next call. Updates #7621 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
James Tucker	c5150eae67	net/netcheck: reenable TestNodeAddrResolve on Windows ... Updates #7876 Co-authored-by: Andrew Dunham <andrew@du.nham.ca> Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Signed-off-by: James Tucker <james@tailscale.com> Change-Id: Idb2e6cc2edf6ca123b751d6c8f8729b0cba86023	2 years ago
Brad Fitzpatrick	10f1c90f4d	wgengine/magicsock, types/nettype, etc: finish ReadFromUDPAddrPort netip migration ... So we're staying within the netip.Addr/AddrPort consistently and avoiding allocs/conversions to the legacy net addr types. Updates #5162 Change-Id: I59feba60d3de39f773e68292d759766bac98c917 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	29f7df9d8f	wgengine/magicsock, etc: remove mostly unused WriteTo methods ... Updates #2331 Updates #5162 Change-Id: I8291884425481eeaedde38a54adfd8ed7292a497 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	83c41f3697	net/netcheck: remove unused method from interface ... Updates #2331 Updates #5162 Change-Id: I77ff956c2d59bde611d47523659a07afb4a6da2d Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
James Tucker	8dec1a8724	.github/workflows: reenable Windows CI, disable broken tests ... We accidentally switched to ./tool/go in 4022796484 which resulted in no longer running Windows builds, as this is attempting to run a bash script. I was unable to quickly fix the various tests that have regressed, so instead I've added skips referencing #7876, which we need to back and fix. Updates #7262 Updates #7876 Signed-off-by: James Tucker <james@tailscale.com>	2 years ago
Brad Fitzpatrick	c889254b42	net/art: skip tests on CI for now ... To get the tree green again for other people. Updates #7866 Change-Id: Ibdad2e1408e5f0c97e49a148bfd77aad17c2c5e5 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Andrew Dunham	228d0c6aea	net/netcheck: use dnscache.Resolver when resolving DERP IPs ... This also adds a bunch of tests for this function to ensure that we're returning the proper IP(s) in all cases. Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I0d9d57170dbab5f2bf07abdf78ecd17e0e635399	2 years ago
Maisem Ali	64bbf1738e	tailcfg: make SelfNodeV4MasqAddrForThisPeer a pointer ... This makes `omitempty` actually work, and saves bytes in each map response. Updates tailscale/corp#8020 Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
David Anderson	a5fd51ebdc	net/art: disable the IPv6 100k routes benchmark. ... At the current unoptimized memory utilization of the various data structures, 100k IPv6 routes consumes in the ballpark of 3-4GiB, which risks OOMing our 386 test machine. Until we have the optimizations to (drastically) reduce that consumption, skip the test that bloats too much for 32-bit machines. Signed-off-by: David Anderson <danderson@tailscale.com>	2 years ago
David Anderson	a7c910e361	net/art: implement the Table type, a multi-level art route table. ... Updates #7781 │ sec/op │ TableInsertion/ipv4/10 1.562µ ± 2% TableInsertion/ipv4/100 2.398µ ± 5% TableInsertion/ipv4/1000 2.097µ ± 3% TableInsertion/ipv4/10000 2.756µ ± 4% TableInsertion/ipv4/100000 2.473µ ± 13% TableInsertion/ipv6/10 7.649µ ± 2% TableInsertion/ipv6/100 12.09µ ± 3% TableInsertion/ipv6/1000 14.84µ ± 5% TableInsertion/ipv6/10000 14.72µ ± 8% TableInsertion/ipv6/100000 13.23µ ± 41% TableDelete/ipv4/10 378.4n ± 5% TableDelete/ipv4/100 366.9n ± 3% TableDelete/ipv4/1000 418.6n ± 3% TableDelete/ipv4/10000 609.2n ± 11% TableDelete/ipv4/100000 679.2n ± 28% TableDelete/ipv6/10 504.2n ± 4% TableDelete/ipv6/100 959.5n ± 12% TableDelete/ipv6/1000 1.436µ ± 6% TableDelete/ipv6/10000 1.772µ ± 15% TableDelete/ipv6/100000 1.172µ ± 113% TableGet/ipv4/10 32.14n ± 11% TableGet/ipv4/100 38.58n ± 2% TableGet/ipv4/1000 45.03n ± 2% TableGet/ipv4/10000 52.90n ± 7% TableGet/ipv4/100000 135.2n ± 11% TableGet/ipv6/10 41.55n ± 1% TableGet/ipv6/100 44.78n ± 2% TableGet/ipv6/1000 49.03n ± 2% TableGet/ipv6/10000 65.38n ± 5% TableGet/ipv6/100000 525.0n ± 39% │ avg-B/op │ TableInsertion/ipv4/10 25.18Ki ± 0% TableInsertion/ipv4/100 17.63Ki ± 0% TableInsertion/ipv4/1000 14.14Ki ± 0% TableInsertion/ipv4/10000 12.92Ki ± 0% TableInsertion/ipv4/100000 11.13Ki ± 0% TableInsertion/ipv6/10 76.87Ki ± 0% TableInsertion/ipv6/100 98.33Ki ± 0% TableInsertion/ipv6/1000 91.44Ki ± 0% TableInsertion/ipv6/10000 90.39Ki ± 0% TableInsertion/ipv6/100000 87.19Ki ± 0% TableDelete/ipv4/10 3.230 ± 0% TableDelete/ipv4/100 4.020 ± 0% TableDelete/ipv4/1000 3.990 ± 0% TableDelete/ipv4/10000 4.000 ± 0% TableDelete/ipv4/100000 4.000 ± 0% TableDelete/ipv6/10 16.00 ± 0% TableDelete/ipv6/100 16.00 ± 0% TableDelete/ipv6/1000 16.00 ± 0% TableDelete/ipv6/10000 16.00 ± 0% TableDelete/ipv6/100000 16.00 ± 0% │ avg-allocs/op │ TableInsertion/ipv4/10 2.900 ± 0% TableInsertion/ipv4/100 2.330 ± 0% TableInsertion/ipv4/1000 2.070 ± 0% TableInsertion/ipv4/10000 1.980 ± 0% TableInsertion/ipv4/100000 1.840 ± 0% TableInsertion/ipv6/10 6.800 ± 0% TableInsertion/ipv6/100 8.420 ± 0% TableInsertion/ipv6/1000 7.900 ± 0% TableInsertion/ipv6/10000 7.820 ± 0% TableInsertion/ipv6/100000 7.580 ± 0% TableDelete/ipv4/10 1.000 ± 0% TableDelete/ipv4/100 1.000 ± 0% TableDelete/ipv4/1000 1.000 ± 0% TableDelete/ipv4/10000 1.000 ± 0% TableDelete/ipv4/100000 1.000 ± 0% TableDelete/ipv6/10 1.000 ± 0% TableDelete/ipv6/100 1.000 ± 0% TableDelete/ipv6/1000 1.000 ± 0% TableDelete/ipv6/10000 1.000 ± 0% TableDelete/ipv6/100000 1.000 ± 0% │ routes/s │ TableInsertion/ipv4/10 640.3k ± 2% TableInsertion/ipv4/100 417.1k ± 5% TableInsertion/ipv4/1000 477.0k ± 3% TableInsertion/ipv4/10000 362.8k ± 5% TableInsertion/ipv4/100000 404.5k ± 15% TableInsertion/ipv6/10 130.7k ± 1% TableInsertion/ipv6/100 82.69k ± 3% TableInsertion/ipv6/1000 67.37k ± 5% TableInsertion/ipv6/10000 67.93k ± 9% TableInsertion/ipv6/100000 75.63k ± 29% TableDelete/ipv4/10 2.642M ± 6% TableDelete/ipv4/100 2.726M ± 3% TableDelete/ipv4/1000 2.389M ± 3% TableDelete/ipv4/10000 1.641M ± 12% TableDelete/ipv4/100000 1.472M ± 27% TableDelete/ipv6/10 1.984M ± 4% TableDelete/ipv6/100 1.042M ± 11% TableDelete/ipv6/1000 696.5k ± 6% TableDelete/ipv6/10000 564.4k ± 13% TableDelete/ipv6/100000 853.6k ± 53% │ addrs/s │ TableGet/ipv4/10 31.11M ± 10% TableGet/ipv4/100 25.92M ± 2% TableGet/ipv4/1000 22.21M ± 2% TableGet/ipv4/10000 18.91M ± 8% TableGet/ipv4/100000 7.397M ± 12% TableGet/ipv6/10 24.07M ± 1% TableGet/ipv6/100 22.33M ± 2% TableGet/ipv6/1000 20.40M ± 2% TableGet/ipv6/10000 15.30M ± 5% TableGet/ipv6/100000 1.905M ± 28% │ B/op │ TableGet/ipv4/10 4.000 ± 0% TableGet/ipv4/100 4.000 ± 0% TableGet/ipv4/1000 4.000 ± 0% TableGet/ipv4/10000 4.000 ± 0% TableGet/ipv4/100000 4.000 ± 0% TableGet/ipv6/10 16.00 ± 0% TableGet/ipv6/100 16.00 ± 0% TableGet/ipv6/1000 16.00 ± 0% TableGet/ipv6/10000 16.00 ± 0% TableGet/ipv6/100000 16.00 ± 0% │ allocs/op │ TableGet/ipv4/10 1.000 ± 0% TableGet/ipv4/100 1.000 ± 0% TableGet/ipv4/1000 1.000 ± 0% TableGet/ipv4/10000 1.000 ± 0% TableGet/ipv4/100000 1.000 ± 0% TableGet/ipv6/10 1.000 ± 0% TableGet/ipv6/100 1.000 ± 0% TableGet/ipv6/1000 1.000 ± 0% TableGet/ipv6/10000 1.000 ± 0% TableGet/ipv6/100000 1.000 ± 0% Signed-off-by: David Anderson <danderson@tailscale.com>	2 years ago
Mihai Parparita	edb02b63f8	net/sockstats: pass in logger to sockstats.WithSockStats ... Using log.Printf may end up being printed out to the console, which is not desirable. I noticed this when I was investigating some client logs with `sockstats: trace "NetcheckClient" was overwritten by another`. That turns to be harmless/expected (the netcheck client will fall back to the DERP client in some cases, which does its own sockstats trace). However, the log output could be visible to users if running the `tailscale netcheck` CLI command, which would be needlessly confusing. Updates tailscale/corp#9230 Signed-off-by: Mihai Parparita <mihai@tailscale.com>	2 years ago
Mihai Parparita	782ccb5655	.github/workflows: run one set of tests with the tailscale_go build tag ... We use it to gate code that depends on custom Go toolchain, but it's currently only passed in the corp runners. Add a set on OSS so that we can catch regressions earlier. To specifically test sockstats this required adding a build tag to explicitly enable them -- they're normally on for iOS, macOS and Android only, and we don't run tests on those platforms normally. Signed-off-by: Mihai Parparita <mihai@tailscale.com>	2 years ago
Mihai Parparita	e978299bf0	net/sockstats: disable deltas for the cell radio power state metric ... Updates tailscale/corp#9230 Signed-off-by: Mihai Parparita <mihai@tailscale.com>	2 years ago
Will Norris	22680a11ae	net/sockstats: return early if no radio period length ... Signed-off-by: Will Norris <will@tailscale.com>	2 years ago
Will Norris	75784e10e2	sockstats: add client metrics for radio power state ... power state is very roughly approximated based on observed network activity and AT&T's state transition timings for a typical 3G radio. Updates tailscale/corp#9230 Updates #3363 Signed-off-by: Will Norris <will@tailscale.com>	2 years ago
Tom DNetto	6a627e5a33	net, wgengine/capture: encode NAT addresses in pcap stream ... Signed-off-by: Tom DNetto <tom@tailscale.com>	2 years ago
Jordan Whited	f475e5550c	net/neterror, wgengine/magicsock: use UDP GSO and GRO on Linux (#7791) ... This commit implements UDP offloading for Linux. GSO size is passed to and from the kernel via socket control messages. Support is probed at runtime. UDP GSO is dependent on checksum offload support on the egress netdev. UDP GSO will be disabled in the event sendmmsg() returns EIO, which is a strong signal that the egress netdev does not support checksum offload. Updates tailscale/corp#8734 Signed-off-by: Jordan Whited <jordan@tailscale.com>	2 years ago
David Anderson	4d1b3bc26f	net/art: implement the stride table building block of ART ... A stride table is an 8-bit routing table implemented as an array binary tree, with a special tree updating function (allot) that enables lightning fast address lookups and reasonably fast insertion and deletion. Insertion, deletion and lookup are all allocation-free. Updates #7781 │ sec/op │ StrideTableInsertion/10/random_order 16.79n ± 2% StrideTableInsertion/10/largest_first 16.83n ± 1% StrideTableInsertion/10/smallest_first 16.83n ± 0% StrideTableInsertion/50/random_order 17.84n ± 1% StrideTableInsertion/50/largest_first 20.04n ± 1% StrideTableInsertion/50/smallest_first 16.39n ± 0% StrideTableInsertion/100/random_order 14.63n ± 0% StrideTableInsertion/100/largest_first 17.45n ± 4% StrideTableInsertion/100/smallest_first 12.98n ± 0% StrideTableInsertion/200/random_order 12.51n ± 4% StrideTableInsertion/200/largest_first 18.36n ± 3% StrideTableInsertion/200/smallest_first 9.609n ± 3% StrideTableDeletion/10/random_order 19.50n ± 1% StrideTableDeletion/10/largest_first 19.34n ± 0% StrideTableDeletion/10/smallest_first 19.43n ± 0% StrideTableDeletion/50/random_order 14.58n ± 1% StrideTableDeletion/50/largest_first 14.27n ± 2% StrideTableDeletion/50/smallest_first 15.51n ± 0% StrideTableDeletion/100/random_order 12.02n ± 3% StrideTableDeletion/100/largest_first 10.64n ± 0% StrideTableDeletion/100/smallest_first 13.21n ± 3% StrideTableDeletion/200/random_order 14.05n ± 4% StrideTableDeletion/200/largest_first 9.288n ± 5% StrideTableDeletion/200/smallest_first 18.51n ± 1% StrideTableGet 0.5010n ± 0% │ routes/s │ StrideTableInsertion/10/random_order 59.55M ± 2% StrideTableInsertion/10/largest_first 59.42M ± 1% StrideTableInsertion/10/smallest_first 59.43M ± 0% StrideTableInsertion/50/random_order 56.04M ± 1% StrideTableInsertion/50/largest_first 49.91M ± 1% StrideTableInsertion/50/smallest_first 61.00M ± 0% StrideTableInsertion/100/random_order 68.35M ± 0% StrideTableInsertion/100/largest_first 57.32M ± 3% StrideTableInsertion/100/smallest_first 77.06M ± 0% StrideTableInsertion/200/random_order 79.93M ± 4% StrideTableInsertion/200/largest_first 54.47M ± 3% StrideTableInsertion/200/smallest_first 104.1M ± 3% StrideTableDeletion/10/random_order 51.28M ± 1% StrideTableDeletion/10/largest_first 51.70M ± 0% StrideTableDeletion/10/smallest_first 51.48M ± 0% StrideTableDeletion/50/random_order 68.60M ± 1% StrideTableDeletion/50/largest_first 70.09M ± 2% StrideTableDeletion/50/smallest_first 64.45M ± 0% StrideTableDeletion/100/random_order 83.21M ± 3% StrideTableDeletion/100/largest_first 94.03M ± 0% StrideTableDeletion/100/smallest_first 75.69M ± 3% StrideTableDeletion/200/random_order 71.20M ± 5% StrideTableDeletion/200/largest_first 107.7M ± 5% StrideTableDeletion/200/smallest_first 54.02M ± 1% StrideTableGet 1.996G ± 0% Signed-off-by: David Anderson <danderson@tailscale.com>	2 years ago
James Tucker	40fa2a420c	envknob,net/tstun,wgengine: use TS_DEBUG_MTU consistently ... Noted on #5915 TS_DEBUG_MTU was not used consistently everywhere. Extract the default into a function that can apply this centrally and use it everywhere. Added envknob.Lookup{Int,Uint}Sized to make it easier to keep CodeQL happy when using converted values. Updates #5915 Signed-off-by: James Tucker <james@tailscale.com>	2 years ago
Will Norris	e99c7c3ee5	sockstats: add labels for netlog and sockstatlog packages ... Signed-off-by: Will Norris <will@tailscale.com>	2 years ago
Andrew Dunham	38e4d303a2	net/tshttpproxy: don't proxy through ourselves ... When running a SOCKS or HTTP proxy, configure the tshttpproxy package to drop those addresses from any HTTP_PROXY or HTTPS_PROXY environment variables. Fixes #7407 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I6cd7cad7a609c639780484bad521c7514841764b	2 years ago
Maisem Ali	985535aebc	net/tstun,wgengine/*: add support for NAT to routes ... This adds support to make exit nodes and subnet routers work when in scenarios where NAT is required. It also updates the NATConfig to be generated from a `wgcfg.Config` as that handles merging prefs with the netmap, so it has the required information about whether an exit node is already configured and whether routes are accepted. Updates tailscale/corp#8020 Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Maisem Ali	d1d5d52b2c	net/tstun/table: add initial RoutingTable implementation ... It is based on `*tempfork/device.AllowedIPs`. Updates tailscale/corp#8020 Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Jordan Whited	27e37cf9b3	go.mod, net/tstun, wgengine/magicsock: update wireguard-go (#7712) ... This commit updates the wireguard-go dependency to pull in fixes for the tun package, specifically 052af4a and aad7fca. Signed-off-by: Jordan Whited <jordan@tailscale.com>	2 years ago
Maisem Ali	d2fd101eb4	net/tstun: only log natConfig on changes ... Updates tailscale/corp#8020 Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Andrew Dunham	33b359642e	net/dns: don't send on closed channel in resolvedManager ... Fixes #7686 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: Ibffb05539ab876b12407d77dcf2201d467895981	2 years ago
Andrew Dunham	4cb1bfee44	net/netcheck: improve determinism in hairpinning test ... If multiple Go channels have a value (or are closed), receiving from them all in a select will nondeterministically return one of the two arms. In this case, it's possible that the hairpin check timer will have expired between when we start checking and before we check at all, but the hairpin packet has already been received. In such cases, we'd nondeterministically set report.HairPinning. Instead, check if we have a value in our results channel first, then select on the value and timeout channel after. Also, add a test that catches this particular failure. Fixes #1795 Change-Id: I842ab0bd38d66fabc6cabf2c2c1bb9bd32febf35 Signed-off-by: Andrew Dunham <andrew@du.nham.ca>	2 years ago
Maisem Ali	0e203e414f	net/packet: add checksum update tests ... Updates tailscale/corp#8020 Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
Maisem Ali	0bf8c8e710	net/tstun: use p.Buffer() in more places ... Updates tailscale/corp#8020 Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago