1587 Commits (4084c6186d254a9d6e7cbede476f0590949a8df1)

Author	SHA1	Message	Date
Jordan Whited	4084c6186d	wgengine/magicsock: add side-effect-free function for netcheck UDP sends (#13487) ... Updates #13484 Updates tailscale/corp#17879 Signed-off-by: Jordan Whited <jordan@tailscale.com>	2 months ago
Andrew Dunham	40833a7524	wgengine/magicsock: disable raw disco by default; add envknob to enable ... Updates #13140 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: Ica85b2ac8ac7eab4ec5413b212f004aecc453279	2 months ago
Jordan Whited	afec2d41b4	wgengine/magicsock: remove redundant deadline from netcheck report call (#13395) ... netcheck.Client.GetReport() applies its own deadlines. This 2s deadline was causing GetReport() to never fall back to HTTPS/ICMP measurements as it was shorter than netcheck.stunProbeTimeout, leaving no time for fallbacks. Updates #13394 Updates #6187 Signed-off-by: Jordan Whited <jordan@tailscale.com>	2 months ago
Brad Fitzpatrick	9f9470fc10	ipnlocal,proxymap,wgengine/netstack: add optional WhoIs/proxymap debug ... Updates tailscale/corp#20600 Change-Id: I2bb17af0f40603ada1ba4cecc087443e00f9392a Co-authored-by: Maisem Ali <maisem@tailscale.com> Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Jordan Whited	7aa766ee65	net/tstun: probe TCP GRO (#13376) ... Disable TCP & UDP GRO if the probe fails. torvalds/linux@e269d79c7d broke virtio_net TCP & UDP GRO causing GRO writes to return EINVAL. The bug was then resolved later in torvalds/linux@89add40066. The offending commit was pulled into various LTS releases. Updates #13041 Signed-off-by: Jordan Whited <jordan@tailscale.com>	3 months ago
Brad Fitzpatrick	3d401c11fa	all: use new Go 1.23 slices.Sorted more ... Updates #12912 Change-Id: If1294e5bc7b5d3cf0067535ae10db75e8b988d8b Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Andrew Dunham	1c972bc7cb	wgengine/magicsock: actually use AF_PACKET socket for raw disco ... Previously, despite what the commit said, we were using a raw IP socket that was *not* an AF_PACKET socket, and thus was subject to the host firewall rules. Switch to using a real AF_PACKET socket to actually get the functionality we want. Updates #13140 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: If657daeeda9ab8d967e75a4f049c66e2bca54b78	3 months ago
Brad Fitzpatrick	65fe0ba7b5	wgengine/magicsock: fix panic regression from cryptokey routing change ... Fixes #13332 Updates tailscale/corp#20732 Change-Id: I30f12746844bf77f5a664bf8e8d8ebf2511a2b27 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Jordan Whited	0926954cf5	net/tstun,wgengine/netstack: implement TCP GRO for local services (#13315) ... Throughput improves substantially when measured via netstack loopback (TS_DEBUG_NETSTACK_LOOPBACK_PORT). Before (d21ebc2): jwhited@i5-12400-2:~$ iperf3 -V -c 100.100.100.100 Starting Test: protocol: TCP, 1 streams, 131072 byte blocks Test Complete. Summary Results: [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 5.77 GBytes 4.95 Gbits/sec 0 sender [ 5] 0.00-10.01 sec 5.77 GBytes 4.95 Gbits/sec receiver After: jwhited@i5-12400-2:~$ iperf3 -V -c 100.100.100.100 Starting Test: protocol: TCP, 1 streams, 131072 byte blocks Test Complete. Summary Results: [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 12.7 GBytes 10.9 Gbits/sec 0 sender [ 5] 0.00-10.00 sec 12.7 GBytes 10.9 Gbits/sec receiver Updates tailscale/corp#22754 Signed-off-by: Jordan Whited <jordan@tailscale.com>	3 months ago
Jordan Whited	d21ebc28af	wgengine/netstack: implement netstack loopback (#13301) ... When the TS_DEBUG_NETSTACK_LOOPBACK_PORT environment variable is set, netstack will loop back (dnat to addressFamilyLoopback:loopbackPort) TCP & UDP flows originally destined to localServicesIP:loopbackPort. localServicesIP is quad-100 or the IPv6 equivalent. Updates tailscale/corp#22713 Signed-off-by: Jordan Whited <jordan@tailscale.com>	3 months ago
Jordan Whited	31cdbd68b1	net/tstun: fix gvisor inbound GSO packet injection (#13283) ... buffs[0] was not sized to hold pkt with GSO, resulting in a panic. Updates tailscale/corp#22511 Signed-off-by: Jordan Whited <jordan@tailscale.com>	3 months ago
Jordan Whited	bfcb3562e6	wgengine/netstack: re-enable gVisor GSO on Linux (#13269) ... This was previously disabled in 8e42510 due to missing GSO-awareness in tstun, which was resolved in d097096. Updates tailscale/corp#22511 Signed-off-by: Jordan Whited <jordan@tailscale.com>	3 months ago
Jordan Whited	d097096ddc	net/tstun,wgengine/netstack: make inbound synthetic packet injection GSO-aware (#13266) ... Updates tailscale/corp#22511 Signed-off-by: Jordan Whited <jordan@tailscale.com>	3 months ago
Jordan Whited	6d4973e1e0	wgengine/netstack: use types/logger.Logf instead of stdlib log.Printf (#13267) ... Updates #cleanup Signed-off-by: Jordan Whited <jordan@tailscale.com>	3 months ago
Percy Wegmann	d00d6d6dc2	go.mod: update to github.com/tailscale/netlink library that doesn't require vishvananda/netlink ... After the upstream PR is merged, we can point directly at github.com/vishvananda/netlink and retire github.com/tailscale/netlink. See https://github.com/vishvananda/netlink/pull/1006 Updates #12298 Signed-off-by: Percy Wegmann <percy@tailscale.com>	3 months ago
Jordan Whited	8e42510a71	wgengine/netstack: disable gVisor GSO on Linux (#13215) ... net/tstun.Wrapper.InjectInboundPacketBuffer is not GSO-aware, which can break quad-100 TCP streams as a result. Linux is the only platform where gVisor GSO was previously enabled. Updates tailscale/corp#22511 Updates #13211 Signed-off-by: Jordan Whited <jordan@tailscale.com>	3 months ago
Jordan Whited	7675c3ebf2	wgengine/netstack/gro: exclude importation of gVisor GRO pkg on iOS (#13202) ... In df6014f1d7 we removed build tag gating preventing importation, which tripped a NetworkExtension limit test in corp. This was a reversal of 25f0a3fc8f which actually made the situation worse, hence the simplification. This commit goes back to the strategy in 25f0a3fc8f, and gets us back under the limit in my local testing. Admittedly, we don't fully understand the effects of importing or excluding importation of this package, and have seen mixed results, but this commit allows us to move forward again. Updates tailscale/corp#22125 Signed-off-by: Jordan Whited <jordan@tailscale.com>	3 months ago
Jordan Whited	df6014f1d7	net/tstun,wgengine{/netstack/gro}: refactor and re-enable gVisor GRO for Linux (#13172) ... In 2f27319baf we disabled GRO due to a data race around concurrent calls to tstun.Wrapper.Write(). This commit refactors GRO to be thread-safe, and re-enables it on Linux. This refactor now carries a GRO type across tstun and netstack APIs with a lifetime that is scoped to a single tstun.Wrapper.Write() call. In 25f0a3fc8f we used build tags to prevent importation of gVisor's GRO package on iOS as at the time we believed it was contributing to additional memory usage on that platform. It wasn't, so this commit simplifies and removes those build tags. Updates tailscale/corp#22353 Updates tailscale/corp#22125 Updates #6816 Signed-off-by: Jordan Whited <jordan@tailscale.com>	3 months ago
tomholford	16bb541adb	wgengine/magicsock: replace deprecated poly1305 (#13184) ... Signed-off-by: tomholford <tomholford@users.noreply.github.com>	3 months ago
Jordan Whited	ccf091e4a6	wgengine/magicsock: don't upgrade to linuxBatchingConn on Android (#13161) ... In a93dc6cdb1 tryUpgradeToBatchingConn() moved to build tag gated files, but the runtime.GOOS condition excluding Android was removed unintentionally from batching_conn_linux.go. Add it back. Updates tailscale/corp#22348 Signed-off-by: Jordan Whited <jordan@tailscale.com>	3 months ago
Andrew Dunham	e107977f75	wgengine/magicsock: disable SIO_UDP_NETRESET on Windows ... By default, Windows sets the SIO_UDP_CONNRESET and SIO_UDP_NETRESET options on created UDP sockets. These behaviours make the UDP socket ICMP-aware; when the system gets an ICMP message (e.g. an "ICMP Port Unreachable" message, in the case of SIO_UDP_CONNRESET), it will cause the underlying UDP socket to throw an error. Confusingly, this can occur even on reads, if the same UDP socket is used to write a packet that triggers this response. The Go runtime disabled the SIO_UDP_CONNRESET behavior in 3114bd6, but did not change SIO_UDP_NETRESET–probably because that socket option isn't documented particularly well. Various other networking code seem to disable this behaviour, such as the Godot game engine (godotengine/godot#22332) and the Eclipse TCF agent (link below). Others appear to work around this by ignoring the error returned (anacrolix/dht#16, among others). For now, until it's clear whether this ends up in the upstream Go implementation or not, let's also disable the SIO_UDP_NETRESET in a similar manner to SIO_UDP_CONNRESET. Eclipse TCF agent: https://gitlab.eclipse.org/eclipse/tcf/tcf.agent/-/blob/master/agent/tcf/framework/mdep.c Updates #10976 Updates golang/go#68614 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I70a2f19855f8dec1bfb82e63f6d14fc4a22ed5c3	3 months ago
Jordan Whited	2f27319baf	wgengine/netstack: disable gVisor TCP GRO for Linux (#13138) ... A SIGSEGV was observed around packet merging logic in gVisor's GRO package. Updates tailscale/corp#22353 Signed-off-by: Jordan Whited <jordan@tailscale.com>	3 months ago
Brad Fitzpatrick	2dd71e64ac	wgengine/magicsock: log when a ReceiveFunc fails ... Updates #10976 Change-Id: I86d30151a25c7d42ed36e273fb207873f4acfdb4 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Brad Fitzpatrick	a61825c7b8	cmd/tta, vnet: add host firewall, env var support, more tests ... In particular, tests showing that #3824 works. But that test doesn't actually work yet; it only gets a DERP connection. (why?) Updates #13038 Change-Id: Ie1fd1b6a38d4e90fae7e72a0b9a142a95f0b2e8f Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Jordan Whited	a93dc6cdb1	wgengine/magicsock: refactor batchingUDPConn to batchingConn interface (#13042) ... This commit adds a batchingConn interface, and renames batchingUDPConn to linuxBatchingConn. tryUpgradeToBatchingConn() may return a platform- specific implementation of batchingConn. So far only a Linux implementation of this interface exists, but this refactor is being done in anticipation of a Windows implementation. Updates tailscale/corp#21874 Signed-off-by: Jordan Whited <jordan@tailscale.com>	4 months ago
Jordan Whited	25f0a3fc8f	wgengine/netstack: use build tags to exclude gVisor GRO importation on iOS (#13015) ... Updates tailscale/corp#22125 Signed-off-by: Jordan Whited <jordan@tailscale.com>	4 months ago
Maisem Ali	07e2487c1d	wgengine/capture: fix v6 field typo in wireshark dissector ... It was using a v4 field for a v6 address. Updates tailscale/corp#8020 Signed-off-by: Maisem Ali <maisem@tailscale.com>	4 months ago
Maisem Ali	a917718353	util/linuxfw: return nil interface not concrete type ... It was returning a nil `*iptablesRunner` instead of a nil `NetfilterRunner` interface which would then fail checks later. Fixes #13012 Signed-off-by: Maisem Ali <maisem@tailscale.com>	4 months ago
Jordan Whited	d9d9d525d9	wgengine/netstack: increase gVisor's TCP send and receive buffer sizes (#12994) ... This commit increases gVisor's TCP max send (4->6MiB) and receive (4->8MiB) buffer sizes on all platforms except iOS. These values are biased towards higher throughput on high bandwidth-delay product paths. The iperf3 results below demonstrate the effect of this commit between two Linux computers with i5-12400 CPUs. 100ms of RTT latency is introduced via Linux's traffic control network emulator queue discipline. The first set of results are from commit f0230ce prior to TCP buffer resizing. gVisor write direction: Test Complete. Summary Results: [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 180 MBytes 151 Mbits/sec 0 sender [ 5] 0.00-10.10 sec 179 MBytes 149 Mbits/sec receiver gVisor read direction: Test Complete. Summary Results: [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.10 sec 337 MBytes 280 Mbits/sec 20 sender [ 5] 0.00-10.00 sec 323 MBytes 271 Mbits/sec receiver The second set of results are from this commit with increased TCP buffer sizes. gVisor write direction: [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 297 MBytes 249 Mbits/sec 0 sender [ 5] 0.00-10.10 sec 297 MBytes 247 Mbits/sec receiver gVisor read direction: [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.10 sec 501 MBytes 416 Mbits/sec 17 sender [ 5] 0.00-10.00 sec 485 MBytes 407 Mbits/sec receiver Updates #9707 Updates tailscale/corp#22119 Signed-off-by: Jordan Whited <jordan@tailscale.com>	4 months ago
Andrew Dunham	9939374c48	wgengine/magicsock: use cloud metadata to get public IPs ... Updates #12774 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I1661b6a2da7966ab667b075894837afd96f4742f	4 months ago
Jordan Whited	f0230ce0b5	go.mod,net/tstun,wgengine/netstack: implement gVisor TCP GRO for Linux (#12921) ... This commit implements TCP GRO for packets being written to gVisor on Linux. Windows support will follow later. The wireguard-go dependency is updated in order to make use of newly exported IP checksum functions. gVisor is updated in order to make use of newly exported stack.PacketBuffer GRO logic. TCP throughput towards gVisor, i.e. TUN write direction, is dramatically improved as a result of this commit. Benchmarks show substantial improvement, sometimes as high as 2x. High bandwidth-delay product paths remain receive window limited, bottlenecked by gVisor's default TCP receive socket buffer size. This will be addressed in a follow-on commit. The iperf3 results below demonstrate the effect of this commit between two Linux computers with i5-12400 CPUs. There is roughly ~13us of round trip latency between them. The first result is from commit 57856fc without TCP GRO. Starting Test: protocol: TCP, 1 streams, 131072 byte blocks - - - - - - - - - - - - - - - - - - - - - - - - - Test Complete. Summary Results: [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 4.77 GBytes 4.10 Gbits/sec 20 sender [ 5] 0.00-10.00 sec 4.77 GBytes 4.10 Gbits/sec receiver The second result is from this commit with TCP GRO. Starting Test: protocol: TCP, 1 streams, 131072 byte blocks - - - - - - - - - - - - - - - - - - - - - - - - - Test Complete. Summary Results: [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 10.6 GBytes 9.14 Gbits/sec 20 sender [ 5] 0.00-10.00 sec 10.6 GBytes 9.14 Gbits/sec receiver Updates #6816 Signed-off-by: Jordan Whited <jordan@tailscale.com>	4 months ago
Jordan Whited	7bc2ddaedc	go.mod,net/tstun,wgengine/netstack: implement gVisor TCP GSO for Linux (#12869) ... This commit implements TCP GSO for packets being read from gVisor on Linux. Windows support will follow later. The wireguard-go dependency is updated in order to make use of newly exported GSO logic from its tun package. A new gVisor stack.LinkEndpoint implementation has been established (linkEndpoint) that is loosely modeled after its predecessor (channel.Endpoint). This new implementation supports GSO of monster TCP segments up to 64K in size, whereas channel.Endpoint only supports up to 32K. linkEndpoint will also be required for GRO, which will be implemented in a follow-on commit. TCP throughput from gVisor, i.e. TUN read direction, is dramatically improved as a result of this commit. Benchmarks show substantial improvement through a wide range of RTT and loss conditions, sometimes as high as 5x. The iperf3 results below demonstrate the effect of this commit between two Linux computers with i5-12400 CPUs. There is roughly ~13us of round trip latency between them. The first result is from commit 57856fc without TCP GSO. Starting Test: protocol: TCP, 1 streams, 131072 byte blocks - - - - - - - - - - - - - - - - - - - - - - - - - Test Complete. Summary Results: [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 2.51 GBytes 2.15 Gbits/sec 154 sender [ 5] 0.00-10.00 sec 2.49 GBytes 2.14 Gbits/sec receiver The second result is from this commit with TCP GSO. Starting Test: protocol: TCP, 1 streams, 131072 byte blocks - - - - - - - - - - - - - - - - - - - - - - - - - Test Complete. Summary Results: [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 12.6 GBytes 10.8 Gbits/sec 6 sender [ 5] 0.00-10.00 sec 12.6 GBytes 10.8 Gbits/sec receiver Updates #6816 Signed-off-by: Jordan Whited <jordan@tailscale.com>	4 months ago
Brad Fitzpatrick	cf97cff33b	wgengine/netstack: simplify netaddrIPFromNetstackIP ... Updates #cleanup Change-Id: I66878b08a75d44170460cbf33c895277c187bd8d Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 months ago
Irbe Krumina	57856fc0d5	ipn,wgengine/magicsock: allow setting static node endpoints via tailscaled configfile (#12882) ... wgengine/magicsock,ipn: allow setting static node endpoints via tailscaled config file. Adds a new StaticEndpoints field to tailscaled config that can be used to statically configure the endpoints that the node advertizes. This field will replace TS_DEBUG_PRETENDPOINTS env var that can be used to achieve the same. Additionally adds some functionality that ensures that endpoints are updated when configfile is reloaded. Also, refactor configuring/reconfiguring components to use the same functionality when configfile is parsed the first time or subsequent times (after reload). Previously a configfile reload did not result in resetting of prefs. Now it does- but does not yet tell the relevant components to consume the new prefs. This is to be done in a follow-up. Updates tailscale/tailscale#12578 Signed-off-by: Irbe Krumina <irbe@tailscale.com>	4 months ago
Nick Khyl	1608831c33	wgengine/router: use quad-100 as the nexthop on Windows ... Windows requires routes to have a nexthop. Routes created using the interface's local IP address or an unspecified IP address ("0.0.0.0" or "::") as the nexthop are considered on-link routes. Notably, Windows treats on-link subnet routes differently, reserving the last IP in the range as the broadcast IP and therefore prohibiting TCP connections to it, resulting in WSA error 10049: "The requested address is not valid in its context. This does not happen with single-host routes, such as routes to Tailscale IP addresses, but becomes a problem with advertised subnets when all IPs in the range should be reachable. Before Windows 8, only routes created with an unspecified IP address were considered on-link, so our previous approach of using the interface's own IP as the nexthop likely worked on Windows 7. This PR updates configureInterface to use the TailscaleServiceIP (100.100.100.100) and its IPv6 counterpart as the nexthop for subnet routes. Fixes tailscale/support-escalations#57 Signed-off-by: Nick Khyl <nickk@tailscale.com>	4 months ago
Brad Fitzpatrick	808b4139ee	wgengine/magicsock: use wireguard-go/conn.PeerAwareEndpoint ... If we get an non-disco presumably-wireguard-encrypted UDP packet from an IP:port we don't recognize, rather than drop the packet, give it to WireGuard anyway and let WireGuard try to figure out who it's from and tell us. This uses the new hook added in https://github.com/tailscale/wireguard-go/pull/27 Updates tailscale/corp#20732 Change-Id: I5c61a40143810592f9efac6c12808a87f924ecf2 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
Lee Briggs	b546a6e758	wgengine/magicsock: allow a CSV list for pretendpoint ... Load Balancers often have more than one ingress IP, so allowing us to add multiple means we can offer multiple options. Updates #12578 Change-Id: I4aa49a698d457627d2f7011796d665c67d4c7952 Signed-off-by: Lee Briggs <lee@leebriggs.co.uk>	5 months ago
Brad Fitzpatrick	c6af5bbfe8	all: add test for package comments, fix, add comments as needed ... Updates #cleanup Change-Id: Ic4304e909d2131a95a38b26911f49e7b1729aaef Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
Brad Fitzpatrick	42dac7c5c2	wgengine/magicsock: add debug envknob for injecting an endpoint ... For testing. Lee wants to play with 'AWS Global Accelerator Custom Routing with Amazon Elastic Kubernetes Service'. If this works well enough, we can promote it. Updates #12578 Change-Id: I5018347ed46c15c9709910717d27305d0aedf8f4 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
Brad Fitzpatrick	d2fef01206	control/controlknobs,tailcfg,wgengine/magicsock: remove DRPO shutoff switch ... The DERP Return Path Optimization (DRPO) is over four years old (and on by default for over two) and we haven't had problems, so time to remove the emergency shutoff code (controlknob) which we've never used. The controlknobs are only meant for new features, to mitigate risk. But we don't want to keep them forever, as they kinda pollute the code. Updates #150 Change-Id: If021bc8fd1b51006d8bddd1ffab639bb1abb0ad1 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
Brad Fitzpatrick	9df107f4f0	wgengine/magicsock: use derp-region-as-magic-AddrPort hack in fewer places ... And fix up a bogus comment and flesh out some other comments. Updates #cleanup Change-Id: Ia60a1c04b0f5e44e8d9587914af819df8e8f442a Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
Andrew Dunham	8487fd2ec2	wgengine/magicsock: add more DERP home clientmetrics ... Updates tailscale/corp#18095 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I423adca2de0730092394bb5fd5796cd35557d352	5 months ago
Andrew Dunham	8161024176	wgengine/magicsock: always set home DERP if no control conn ... The logic we added in #11378 would prevent selecting a home DERP if we have no control connection. Updates tailscale/corp#18095 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I44bb6ac4393989444e4961b8cfa27dc149a33c6e	5 months ago
Brad Fitzpatrick	5ec01bf3ce	wgengine/filter: support FilterRules matching on srcIP node caps [capver 100] ... See #12542 for background. Updates #12542 Change-Id: Ida312f700affc00d17681dc7551ee9672eeb1789 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
Keli	bd50a3457d	wgengine/filter: add "Accept" TCP log lines to verbose logging (#12525) ... Changes "Accept" TCP logs to display in verbose logs only, and removes lines from default logging behavior. Updates #12158 Signed-off-by: Keli Velazquez <keli@tailscale.com>	5 months ago
Brad Fitzpatrick	21460a5b14	tailcfg, wgengine/filter: remove most FilterRule.SrcBits code ... The control plane hasn't sent it to clients in ages. Updates tailscale/corp#20965 Change-Id: I1d71a4b6dd3f75010a05c544ee39827837c30772 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
Brad Fitzpatrick	9e0a5cc551	net/flowtrack: optimize Tuple type for use as map key ... This gets UDP filter overhead closer to TCP. Still ~2x, but no longer ~3x. goos: darwin goarch: arm64 pkg: tailscale.com/wgengine/filter │ before │ after │ │ sec/op │ sec/op vs base │ FilterMatch/tcp-not-syn-v4-8 15.43n ± 3% 15.38n ± 5% ~ (p=0.339 n=10) FilterMatch/udp-existing-flow-v4-8 42.45n ± 0% 34.77n ± 1% -18.08% (p=0.000 n=10) geomean 25.59n 23.12n -9.65% Updates #12486 Change-Id: I595cfadcc6b7234604bed9c4dd4261e087c0d4c4 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
Brad Fitzpatrick	bd93c3067e	wgengine/filter/filtertype: make Match.IPProto a view ... I noticed we were allocating these every time when they could just share the same memory. Rather than document ownership, just lock it down with a view. I was considering doing all of the fields but decided to just do this one first as test to see how infectious it became. Conclusion: not very. Updates #cleanup (while working towards tailscale/corp#20514) Change-Id: I8ce08519de0c9a53f20292adfbecd970fe362de0 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago
Andrew Dunham	45d2f4301f	proxymap, various: distinguish between different protocols ... Previously, we were registering TCP and UDP connections in the same map, which could result in erroneously removing a mapping if one of the two connections completes while the other one is still active. Add a "proto string" argument to these functions to avoid this. Additionally, take the "proto" argument in LocalAPI, and plumb that through from the CLI and add a new LocalClient method. Updates tailscale/corp#20600 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I35d5efaefdfbf4721e315b8ca123f0c8af9125fb	5 months ago
Brad Fitzpatrick	20a5f939ba	wgengine/filter: add UDP flow benchmark ... To show the effects of the flow LRU accounting on e.g. QUIC traffic. For an open TCP connection: BenchmarkFilterMatch/tcp-not-syn-v4-8 66602070 16.74 ns/op BenchmarkFilterMatch/tcp-not-syn-v4-8 67718179 16.60 ns/op BenchmarkFilterMatch/tcp-not-syn-v4-8 68403351 16.84 ns/op BenchmarkFilterMatch/tcp-not-syn-v4-8 66076416 16.87 ns/op BenchmarkFilterMatch/tcp-not-syn-v4-8 67159012 16.67 ns/op BenchmarkFilterMatch/tcp-not-syn-v4-8 65009526 16.58 ns/op BenchmarkFilterMatch/tcp-not-syn-v4-8 66588055 16.62 ns/op BenchmarkFilterMatch/tcp-not-syn-v4-8 63037071 16.58 ns/op BenchmarkFilterMatch/tcp-not-syn-v4-8 69124975 21.15 ns/op BenchmarkFilterMatch/tcp-not-syn-v4-8 54482922 20.41 ns/op And an open UDP connection: BenchmarkFilterMatch/udp-existing-flow-v4-8 25570020 44.09 ns/op BenchmarkFilterMatch/udp-existing-flow-v4-8 26725958 46.99 ns/op BenchmarkFilterMatch/udp-existing-flow-v4-8 25936412 47.11 ns/op BenchmarkFilterMatch/udp-existing-flow-v4-8 25418325 45.99 ns/op BenchmarkFilterMatch/udp-existing-flow-v4-8 25759848 44.73 ns/op BenchmarkFilterMatch/udp-existing-flow-v4-8 25212488 46.26 ns/op BenchmarkFilterMatch/udp-existing-flow-v4-8 25344370 44.55 ns/op BenchmarkFilterMatch/udp-existing-flow-v4-8 26399372 45.26 ns/op BenchmarkFilterMatch/udp-existing-flow-v4-8 26274159 47.51 ns/op BenchmarkFilterMatch/udp-existing-flow-v4-8 26070472 46.79 ns/op Updates #12486 Change-Id: Ica4263fb77972cf43db5a2e9433b4429506edfde Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 months ago