tailscale

Commit Graph

Author	SHA1	Message	Date
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
Jordan Whited	f0b9d3f477	net/tstun: fix docstring for Wrapper.SetWGConfig (#12796 ) Updates #cleanup Signed-off-by: Jordan Whited <jordan@tailscale.com>	4 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
Maisem Ali	2238ca8a05	go.mod: bump bart Updates #bart Signed-off-by: Maisem Ali <maisem@tailscale.com>	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
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
Maisem Ali	1f51bb6891	net/tstun: do SNAT after filterPacketOutboundToWireGuard In a configuration where the local node (ip1) has a different IP (ip2) that it uses to communicate with a peer (ip3) we would do UDP flow tracking on the `ip2->ip3` tuple. When we receive the response from the peer `ip3->ip2` we would dnat it back to `ip3->ip1` which would then not match the flow track state and the packet would get dropped. To fix this, we should do flow tracking on the `ip1->ip3` tuple instead of `ip2->ip3` which requires doing SNAT after the running filterPacketOutboundToWireGuard. Updates tailscale/corp#19971, tailscale/corp#8020 Signed-off-by: Maisem Ali <maisem@tailscale.com>	6 months ago
Maisem Ali	af97e7a793	tailcfg,all: add/plumb Node.IsJailed This adds a new bool that can be sent down from control to do jailing on the client side. Previously this would only be done from control by modifying the packet filter we sent down to clients. This would result in a lot of additional work/CPU on control, we could instead just do this on the client. This has always been a TODO which we keep putting off, might as well do it now. Updates tailscale/corp#19623 Signed-off-by: Maisem Ali <maisem@tailscale.com>	7 months ago
Maisem Ali	e67069550b	ipn/ipnlocal,net/tstun,wgengine: create and plumb jailed packet filter This plumbs a packet filter for jailed nodes through to the tstun.Wrapper; the filter for a jailed node is equivalent to a "shields up" filter. Currently a no-op as there is no way for control to tell the client whether a peer is jailed. Updates tailscale/corp#19623 Co-authored-by: Andrew Dunham <andrew@du.nham.ca> Signed-off-by: Maisem Ali <maisem@tailscale.com> Change-Id: I5ccc5f00e197fde15dd567485b2a99d8254391ad	7 months ago
Maisem Ali	5ef178fdca	net/tstun: refactor peerConfig to allow storing more details This refactors the peerConfig struct to allow storing more details about a peer and not just the masq addresses. To be used in a follow up change. As a side effect, this also makes the DNAT logic on the inbound packet stricter. Previously it would only match against the packets dst IP, not it also takes the src IP into consideration. The beahvior is at parity with the SNAT case. Updates tailscale/corp#19623 Co-authored-by: Andrew Dunham <andrew@du.nham.ca> Signed-off-by: Maisem Ali <maisem@tailscale.com> Change-Id: I5f40802bebbf0f055436eb8824e4511d0052772d	7 months ago
Andrew Dunham	be663c84c1	net/tstun: rename natConfig to peerConfig So that we can use this for additional, non-NAT configuration without it being confusing. Updates #cleanup Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I1658d59c9824217917a94ee76d2d08f0a682986f	7 months ago
Andrew Dunham	10497acc95	net/tstun: refactor natConfig to not be per-family This was a holdover from the older, pre-BART days and is no longer necessary. Updates #cleanup Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I71b892bab1898077767b9ff51cef33d59c08faf8	7 months ago
Jordan Whited	a47ce618bd	net/tstun: implement env var for disabling UDP GRO on Linux (#11924 ) Certain device drivers (e.g. vxlan, geneve) do not properly handle coalesced UDP packets later in the stack, resulting in packet loss. Updates #11026 Signed-off-by: Jordan Whited <jordan@tailscale.com>	7 months ago
Brad Fitzpatrick	7c1d6e35a5	all: use Go 1.22 range-over-int Updates #11058 Change-Id: I35e7ef9b90e83cac04ca93fd964ad00ed5b48430 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	7 months ago
Brad Fitzpatrick	a1abd12f35	cmd/tailscaled, net/tstun: build for aix/ppc64 At least in userspace-networking mode. Fixes #11361 Change-Id: I78d33f0f7e05fe9e9ee95b97c99b593f8fe498f2 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	7 months ago
Percy Wegmann	8b8b315258	net/tstun: use gaissmai/bart instead of tempfork/device This implementation uses less memory than tempfork/device, which helps avoid OOM conditions in the iOS VPN extension when switching to a Tailnet with ExitNode routing enabled. Updates tailscale/corp#18514 Signed-off-by: Percy Wegmann <percy@tailscale.com>	8 months ago
Andrew Dunham	62cf83eb92	go.mod: bump gvisor The `stack.PacketBufferPtr` type no longer exists; replace it with `*stack.PacketBuffer` instead. Updates #8043 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: Ib56ceff09166a042aa3d9b80f50b2aa2d34b3683	9 months ago
Andrew Dunham	3dd8ae2f26	net/tstun: fix spelling of "WireGuard" Updates #cleanup Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: Ida7e30f4689bc18f5f7502f53a0adb5ac3c7981a	9 months ago
Andrew Lytvynov	2716250ee8	all: cleanup unused code, part 2 (#10670 ) And enable U1000 check in staticcheck. Updates #cleanup Signed-off-by: Andrew Lytvynov <awly@tailscale.com>	11 months ago
Andrew Lytvynov	1302bd1181	all: cleanup unused code, part 1 (#10661 ) Run `staticcheck` with `U1000` to find unused code. This cleans up about a half of it. I'll do the other half separately to keep PRs manageable. Updates #cleanup Signed-off-by: Andrew Lytvynov <awly@tailscale.com>	11 months ago
Maisem Ali	5297bd2cff	cmd/tailscaled,net/tstun: fix data race on start-up in TUN mode Fixes #7894 Change-Id: Ice3f8019405714dd69d02bc07694f3872bb598b8 Co-authored-by: Brad Fitzpatrick <bradfitz@tailscale.com> Signed-off-by: Maisem Ali <maisem@tailscale.com>	1 year ago
Maisem Ali	9d96e05267	net/packet: split off checksum munging into different pkg The current structure meant that we were embedding netstack in the tailscale CLI and in the GUIs. This removes that by isolating the checksum munging to a different pkg which is only called from `net/tstun`. Fixes #9756 Signed-off-by: Maisem Ali <maisem@tailscale.com>	1 year ago
Maisem Ali	78a083e144	types/ipproto: drop IPProto from IPProtoVersion Based on https://github.com/golang/go/wiki/CodeReviewComments#package-names. Updates #cleanup Signed-off-by: Maisem Ali <maisem@tailscale.com>	1 year ago
Val	893bdd729c	disco,net/tstun,wgengine/magicsock: probe peer MTU Automatically probe the path MTU to a peer when peer MTU is enabled, but do not use the MTU information for anything yet. Updates #311 Signed-off-by: Val <valerie@tailscale.com>	1 year ago
Tom DNetto	da1b917575	net/tstun: finish wiring IPv6 NAT support Updates https://github.com/tailscale/corp/issues/11202 Updates ENG-991 Signed-off-by: Tom DNetto <tom@tailscale.com>	1 year ago
Val	c26d91d6bd	net/tstun: remove unused function DefaultMTU() Now that corp is updated, remove the shim code to bridge the rename from DefaultMTU() to DefaultTUNMTU. Updates #311 Signed-off-by: Val <valerie@tailscale.com>	1 year ago
Andrea Barisani	b5b4298325	go.mod,*: bump gvisor Updates #9253 Signed-off-by: Andrea Barisani <andrea@inversepath.com> Signed-off-by: James Tucker <james@tailscale.com>	1 year ago
Val	c608660d12	wgengine,net,ipn,disco: split up and define different types of MTU Prepare for path MTU discovery by splitting up the concept of DefaultMTU() into the concepts of the Tailscale TUN MTU, MTUs of underlying network interfaces, minimum "safe" TUN MTU, user configured TUN MTU, probed path MTU to a peer, and maximum probed MTU. Add a set of likely MTUs to probe. Updates #311 Signed-off-by: Val <valerie@tailscale.com>	1 year ago
Brad Fitzpatrick	241c983920	net/tstun: use untyped consts, simplify DefaultMTU func Updates #cleanup Change-Id: Ic9ad1d6134818699f777c66a31024e846dfdc5d4 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
Val	6cc5b272d8	Revert "wgengine,net,ipn,disco: split up and define different types of MTU" This reverts commit `059051c58a`. Signed-off-by: Val <valerie@tailscale.com>	1 year ago
Val	059051c58a	wgengine,net,ipn,disco: split up and define different types of MTU Prepare for path MTU discovery by splitting up the concept of DefaultMTU() into the concepts of the Tailscale TUN MTU, MTUs of underlying network interfaces, minimum "safe" TUN MTU, user configured TUN MTU, probed path MTU to a peer, and maximum probed MTU. Add a set of likely MTUs to probe. Updates #311 Signed-off-by: Val <valerie@tailscale.com>	1 year ago
Maisem Ali	3056a98bbd	net/tstun: add better logging of natV4Config It might as well have been spewing out gibberish. This adds a nicer output format for us to be able to read and identify whats going on. Sample output ``` natV4Config{nativeAddr: 100.83.114.95, listenAddrs: [10.32.80.33], dstMasqAddrs: [10.32.80.33: 407 peers]} ``` Fixes tailscale/corp#14650 Signed-off-by: Maisem Ali <maisem@tailscale.com>	1 year ago
Tom DNetto	c08cf2a9c6	all: declare & plumb IPv6 masquerade address for peer This PR plumbs through awareness of an IPv6 SNAT/masquerade address from the wire protocol through to the low-level (tstun / wgengine). This PR is the first in two PRs for implementing IPv6 NAT support to/from peers. A subsequent PR will implement the data-plane changes to implement IPv6 NAT - this is just plumbing. Signed-off-by: Tom DNetto <tom@tailscale.com> Updates ENG-991	1 year ago
Brad Fitzpatrick	dc7aa98b76	all: use set.Set consistently instead of map[T]struct{} I didn't clean up the more idiomatic map[T]bool with true values, at least yet. I just converted the relatively awkward struct{}-valued maps. Updates #cleanup Change-Id: I758abebd2bb1f64bc7a9d0f25c32298f4679c14f Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	1 year ago
Andrea Barisani	0a74d46568	adjust build tags for tamago Signed-off-by: Andrea Barisani <andrea@inversepath.com>	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	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
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
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
Andrew Dunham	04a3118d45	net/tstun: add tests for captureHook Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I630f852d9f16c951c721b34f2bc4128e68fe9475	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
Tom DNetto	6a627e5a33	net, wgengine/capture: encode NAT addresses in pcap stream Signed-off-by: Tom DNetto <tom@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
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
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

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134 Commits (d0e8375b53620da9fc490ebf704bde389291d5b2)