tailscale

Commit Graph

Author	SHA1	Message	Date
Brad Fitzpatrick	c3306bfd15	control/controlhttp/controlhttpserver: split out Accept to its own package Otherwise all the clients only using control/controlhttp for the ts2021 HTTP client were also pulling in WebSocket libraries, as the server side always needs to speak websockets, but only GOOS=js clients speak it. This doesn't yet totally remove the websocket dependency on Linux because Linux has a envknob opt-in to act like GOOS=js for manual testing and force the use of WebSockets for DERP only (not control). We can put that behind a build tag in a future change to eliminate the dep on all GOOSes. Updates #1278 Change-Id: I4f60508f4cad52bf8c8943c8851ecee506b7ebc9 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 weeks ago
Irbe Krumina	8ba9b558d2	envknob,kube/kubetypes,cmd/k8s-operator: add app type for ProxyGroup (#14029 ) Sets a custom hostinfo app type for ProxyGroup replicas, similarly to how we do it for all other Kubernetes Operator managed components. Updates tailscale/tailscale#13406,tailscale/corp#22920 Signed-off-by: Irbe Krumina <irbe@tailscale.com>	2 weeks ago
Brad Fitzpatrick	01185e436f	types/result, util/lineiter: add package for a result type, use it This adds a new generic result type (motivated by golang/go#70084) to try it out, and uses it in the new lineutil package (replacing the old lineread package), changing that package to return iterators: sometimes over []byte (when the input is all in memory), but sometimes iterators over results of []byte, if errors might happen at runtime. Updates #12912 Updates golang/go#70084 Change-Id: Iacdc1070e661b5fb163907b1e8b07ac7d51d3f83 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 weeks ago
Irbe Krumina	809a6eba80	cmd/k8s-operator: allow to optionally configure tailscaled port (#14005 ) Updates tailscale/tailscale#13981 Signed-off-by: Irbe Krumina <irbe@tailscale.com>	3 weeks ago
Nick Khyl	3f626c0d77	cmd/tailscale/cli, client/tailscale, ipn/localapi: add tailscale syspolicy {list,reload} commands In this PR, we add the tailscale syspolicy command with two subcommands: list, which displays policy settings, and reload, which forces a reload of those settings. We also update the LocalAPI and LocalClient to facilitate these additions. Updates #12687 Signed-off-by: Nick Khyl <nickk@tailscale.com>	3 weeks ago
Irbe Krumina	1103044598	cmd/k8s-operator,k8s-operator: add topology spread constraints to ProxyClass (#13959 ) Now when we have HA for egress proxies, it makes sense to support topology spread constraints that would allow users to define more complex topologies of how proxy Pods need to be deployed in relation with other Pods/across regions etc. Updates tailscale/tailscale#13406 Signed-off-by: Irbe Krumina <irbe@tailscale.com>	4 weeks ago
Nick Kirby	6ab39b7bcd	cmd/k8s-operator: validate that tailscale.com/tailnet-ip annotation value is a valid IP Fixes #13836 Signed-off-by: Nick Kirby <nrkirb@gmail.com>	4 weeks ago
Nick Khyl	e815ae0ec4	util/syspolicy, ipn/ipnlocal: update syspolicy package to utilize syspolicy/rsop In this PR, we update the syspolicy package to utilize syspolicy/rsop under the hood, and remove syspolicy.CachingHandler, syspolicy.windowsHandler and related code which is no longer used. We mark the syspolicy.Handler interface and RegisterHandler/SetHandlerForTest functions as deprecated, but keep them temporarily until they are no longer used in other repos. We also update the package to register setting definitions for all existing policy settings and to register the Registry-based, Windows-specific policy stores when running on Windows. Finally, we update existing internal and external tests to use the new API and add a few more tests and benchmarks. Updates #12687 Signed-off-by: Nick Khyl <nickk@tailscale.com>	4 weeks ago
Maisem Ali	d4d21a0bbf	net/tstun: restore tap mode functionality It had bit-rotted likely during the transition to vector io in `76389d8baf`. Tested on Ubuntu 24.04 by creating a netns and doing the DHCP dance to get an IP. Updates #2589 Signed-off-by: Maisem Ali <maisem@tailscale.com>	1 month ago
Andrea Gottardo	fd77965f23	net/tlsdial: call out firewalls blocking Tailscale in health warnings (#13840 ) Updates tailscale/tailscale#13839 Adds a new blockblame package which can detect common MITM SSL certificates used by network appliances. We use this in `tlsdial` to display a dedicated health warning when we cannot connect to control, and a network appliance MITM attack is detected. Signed-off-by: Andrea Gottardo <andrea@gottardo.me>	1 month ago
Mario Minardi	d32d742af0	ipn/ipnlocal: error when trying to use exit node on unsupported platform (#13726 ) Adds logic to `checkExitNodePrefsLocked` to return an error when attempting to use exit nodes on a platform where this is not supported. This mirrors logic that was added to error out when trying to use `ssh` on an unsupported platform, and has very similar semantics. Fixes https://github.com/tailscale/tailscale/issues/13724 Signed-off-by: Mario Minardi <mario@tailscale.com>	1 month ago
Percy Wegmann	f9949cde8b	client/tailscale,cmd/{cli,get-authkey,k8s-operator}: set distinct User-Agents This helps better distinguish what is generating activity to the Tailscale public API. Updates tailscale/corp#23838 Signed-off-by: Percy Wegmann <percy@tailscale.com>	1 month ago
Brad Fitzpatrick	1938685d39	clientupdate: don't link distsign on platforms that don't download Updates tailscale/corp#20099 Change-Id: Ie3b782379b19d5f7890a8d3a378096b4f3e8a612 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 months ago
Irbe Krumina	89ee6bbdae	cmd/k8s-operator,k8s-operator/apis: set a readiness condition on egress Services for ProxyGroup (#13746 ) cmd/k8s-operator,k8s-operator/apis: set a readiness condition on egress Services Set a readiness condition on ExternalName Services that define a tailnet target to route cluster traffic to via a ProxyGroup's proxies. The condition is set to true if at least one proxy is currently set up to route. Updates tailscale/tailscale#13406 Signed-off-by: Irbe Krumina <irbe@tailscale.com>	2 months ago
Irbe Krumina	f6d4d03355	cmd/k8s-operator: don't error out if ProxyClass for ProxyGroup not found. (#13736 ) We don't need to error out and continuously reconcile if ProxyClass has not (yet) been created, once it gets created the ProxyGroup reconciler will get triggered. Updates tailscale/tailscale#13406 Signed-off-by: Irbe Krumina <irbe@tailscale.com>	2 months ago
Irbe Krumina	60011e73b8	cmd/k8s-operator: fix Pod IP selection (#13743 ) Ensure that .status.podIPs is used to select Pod's IP in all reconcilers. Updates tailscale/tailscale#13406 Signed-off-by: Irbe Krumina <irbe@tailscale.com>	2 months ago
Nick Khyl	da40609abd	util/syspolicy, ipn: add "tailscale debug component-logs" support Fixes #13313 Fixes #12687 Signed-off-by: Nick Khyl <nickk@tailscale.com>	2 months ago
Tom Proctor	07c157ee9f	cmd/k8s-operator: base ProxyGroup StatefulSet on common proxy.yaml definition (#13714 ) As discussed in #13684, base the ProxyGroup's proxy definitions on the same scaffolding as the existing proxies, as defined in proxy.yaml Updates #13406 Signed-off-by: Tom Proctor <tomhjp@users.noreply.github.com>	2 months ago
Irbe Krumina	861dc3631c	cmd/{k8s-operator,containerboot},kube/egressservices: fix Pod IP check for dual stack clusters (#13721 ) Currently egress Services for ProxyGroup only work for Pods and Services with IPv4 addresses. Ensure that it works on dual stack clusters by reading proxy Pod's IP from the .status.podIPs list that always contains both IPv4 and IPv6 address (if the Pod has them) rather than .status.podIP that could contain IPv6 only for a dual stack cluster. Updates tailscale/tailscale#13406 Signed-off-by: Irbe Krumina <irbe@tailscale.com>	2 months ago
Tom Proctor	36cb2e4e5f	cmd/k8s-operator,k8s-operator: use default ProxyClass if set for ProxyGroup (#13720 ) The default ProxyClass can be set via helm chart or env var, and applies to all proxies that do not otherwise have an explicit ProxyClass set. This ensures proxies created by the new ProxyGroup CRD are consistent with the behaviour of existing proxies Nearby but unrelated changes: * Fix up double error logs (controller runtime logs returned errors) * Fix a couple of variable names Updates #13406 Signed-off-by: Tom Proctor <tomhjp@users.noreply.github.com>	2 months ago
Irbe Krumina	7f016baa87	cmd/k8s-operator,k8s-operator: create ConfigMap for egress services + small fixes for egress services (#13715 ) cmd/k8s-operator, k8s-operator: create ConfigMap for egress services + small reconciler fixes Updates tailscale/tailscale#13406 Signed-off-by: Irbe Krumina <irbe@tailscale.com>	2 months ago
Tom Proctor	e48cddfbb3	cmd/{containerboot,k8s-operator},k8s-operator,kube: add ProxyGroup controller (#13684 ) Implements the controller for the new ProxyGroup CRD, designed for running proxies in a high availability configuration. Each proxy gets its own config and state Secret, and its own tailscale node ID. We are currently mounting all of the config secrets into the container, but will stop mounting them and instead read them directly from the kube API once #13578 is implemented. Updates #13406 Signed-off-by: Tom Proctor <tomhjp@users.noreply.github.com>	2 months ago
Irbe Krumina	e8bb5d1be5	cmd/{k8s-operator,containerboot},k8s-operator,kube: reconcile ExternalName Services for ProxyGroup (#13635 ) Adds a new reconciler that reconciles ExternalName Services that define a tailnet target that should be exposed to cluster workloads on a ProxyGroup's proxies. The reconciler ensures that for each such service, the config mounted to the proxies is updated with the tailnet target definition and that and EndpointSlice and ClusterIP Service are created for the service. Adds a new reconciler that ensures that as proxy Pods become ready to route traffic to a tailnet target, the EndpointSlice for the target is updated with the Pods' endpoints. Updates tailscale/tailscale#13406 Signed-off-by: Irbe Krumina <irbe@tailscale.com>	2 months ago
Irbe Krumina	c62b0732d2	cmd/k8s-operator: remove auth key once proxy has logged in (#13612 ) The operator creates a non-reusable auth key for each of the cluster proxies that it creates and puts in the tailscaled configfile mounted to the proxies. The proxies are always tagged, and their state is persisted in a Kubernetes Secret, so their node keys are expected to never be regenerated, so that they don't need to re-auth. Some tailnet configurations however have seen issues where the auth keys being left in the tailscaled configfile cause the proxies to end up in unauthorized state after a restart at a later point in time. Currently, we have not found a way to reproduce this issue, however this commit removes the auth key from the config once the proxy can be assumed to have logged in. If an existing, logged-in proxy is upgraded to this version, its redundant auth key will be removed from the conffile. If an existing, logged-in proxy is downgraded from this version to a previous version, it will work as before without re-issuing key as the previous code did not enforce that a key must be present. Updates tailscale/tailscale#13451 Signed-off-by: Irbe Krumina <irbe@tailscale.com>	2 months ago
Tom Proctor	cab2e6ea67	cmd/k8s-operator,k8s-operator: add ProxyGroup CRD (#13591 ) The ProxyGroup CRD specifies a set of N pods which will each be a tailnet device, and will have M different ingress or egress services mapped onto them. It is the mechanism for specifying how highly available proxies need to be. This commit only adds the definition, no controller loop, and so it is not currently functional. This commit also splits out TailnetDevice and RecorderTailnetDevice into separate structs because the URL field is specific to recorders, but we want a more generic struct for use in the ProxyGroup status field. Updates #13406 Signed-off-by: Tom Proctor <tomhjp@users.noreply.github.com>	2 months ago
Cameron Stokes	65c26357b1	cmd/k8s-operator, k8s-operator: fix outdated kb links (#13585 ) updates #13583 Signed-off-by: Cameron Stokes <cameron@tailscale.com>	2 months ago
Tom Proctor	98f4dd9857	cmd/k8s-operator,k8s-operator,kube: Add TSRecorder CRD + controller (#13299 ) cmd/k8s-operator,k8s-operator,kube: Add TSRecorder CRD + controller Deploys tsrecorder images to the operator's cluster. S3 storage is configured via environment variables from a k8s Secret. Currently only supports a single tsrecorder replica, but I've tried to take early steps towards supporting multiple replicas by e.g. having a separate secret for auth and state storage. Example CR: ```yaml apiVersion: tailscale.com/v1alpha1 kind: Recorder metadata: name: rec spec: enableUI: true ``` Updates #13298 Signed-off-by: Tom Proctor <tomhjp@users.noreply.github.com>	2 months ago
Irbe Krumina	209567e7a0	kube,cmd/{k8s-operator,containerboot},envknob,ipn/store/kubestore,*/depaware.txt: rename packages (#13418 ) Rename kube/{types,client,api} -> kube/{kubetypes,kubeclient,kubeapi} so that we don't need to rename the package on each import to convey that it's kubernetes specific. Updates#cleanup Signed-off-by: Irbe Krumina <irbe@tailscale.com>	3 months ago
Irbe Krumina	d6dfb7f242	kube,cmd/{k8s-operator,containerboot},envknob,ipn/store/kubestore,*/depaware.txt: split out kube types (#13417 ) Further split kube package into kube/{client,api,types}. This is so that consumers who only need constants/static types don't have to import the client and api bits. Updates#cleanup Signed-off-by: Irbe Krumina <irbe@tailscale.com>	3 months ago
Irbe Krumina	ecd64f6ed9	cmd/k8s-operator,kube: set app name for Kubernetes Operator proxies (#13410 ) Updates tailscale/corp#22920 Signed-off-by: Irbe Krumina <irbe@tailscale.com>	3 months ago
Irbe Krumina	8e1c00f841	cmd/k8s-operator,k8s-operator/sessionrecording: ensure recording header contains terminal size for terminal sessions (#12965 ) * cmd/k8s-operator,k8s-operator/sessonrecording: ensure CastHeader contains terminal size For tsrecorder to be able to play session recordings, the recording's CastHeader must have '.Width' and '.Height' fields set to non-zero. Kubectl (or whoever is the client that initiates the 'kubectl exec' session recording) sends the terminal dimensions in a resize message that the API server proxy can intercept, however that races with the first server message that we need to record. This PR ensures we wait for the terminal dimensions to be processed from the first resize message before any other data is sent, so that for all sessions with terminal attached, the header of the session recording contains the terminal dimensions and the recording can be played by tsrecorder. Updates tailscale/tailscale#19821 Signed-off-by: Irbe Krumina <irbe@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
Nick Khyl	961ee321e8	ipn/{ipnauth,ipnlocal,ipnserver,localapi}: start baby step toward moving access checks from the localapi.Handler to the LocalBackend Currently, we use PermitRead/PermitWrite/PermitCert permission flags to determine which operations are allowed for a LocalAPI client. These checks are performed when localapi.Handler handles a request. Additionally, certain operations (e.g., changing the serve config) requires the connected user to be a local admin. This approach is inherently racey and is subject to TOCTOU issues. We consider it to be more critical on Windows environments, which are inherently multi-user, and therefore we prevent more than one OS user from connecting and utilizing the LocalBackend at the same time. However, the same type of issues is also applicable to other platforms when switching between profiles that have different OperatorUser values in ipn.Prefs. We'd like to allow more than one Windows user to connect, but limit what they can see and do based on their access rights on the device (e.g., an local admin or not) and to the currently active LoginProfile (e.g., owner/operator or not), while preventing TOCTOU issues on Windows and other platforms. Therefore, we'd like to pass an actor from the LocalAPI to the LocalBackend to represent the user performing the operation. The LocalBackend, or the profileManager down the line, will then check the actor's access rights to perform a given operation on the device and against the current (and/or the target) profile. This PR does not change the current permission model in any way, but it introduces the concept of an actor and includes some preparatory work to pass it around. Temporarily, the ipnauth.Actor interface has methods like IsLocalSystem and IsLocalAdmin, which are only relevant to the current permission model. It also lacks methods that will actually be used in the new model. We'll be adding these gradually in the next PRs and removing the deprecated methods and the Permit* flags at the end of the transition. Updates tailscale/corp#18342 Signed-off-by: Nick Khyl <nickk@tailscale.com>	3 months ago
Kristoffer Dalby	a2c42d3cd4	usermetric: add initial user-facing metrics This commit adds a new usermetric package and wires up metrics across the tailscale client. Updates tailscale/corp#22075 Co-authored-by: Anton Tolchanov <anton@tailscale.com> Signed-off-by: Kristoffer Dalby <kristoffer@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
Ilarion Kovalchuk	0cb7eb9b75	net/dns: updated gonotify dependency to v2 that supports closable context Signed-off-by: Ilarion Kovalchuk <illarion.kovalchuk@gmail.com>	3 months ago
Brad Fitzpatrick	696711cc17	all: switch to and require Go 1.23 Updates #12912 Change-Id: Ib4ae26eb5fb68ad2216cab4913811b94f7eed5b6 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Brad Fitzpatrick	0ff474ff37	all: fix new lint warnings from bumping staticcheck In prep for updating to new staticcheck required for Go 1.23. Updates #12912 Change-Id: If77892a023b79c6fa798f936fc80428fd4ce0673 Signed-off-by: Brad Fitzpatrick <bradfitz@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
ChandonPierre	93dc2ded6e	cmd/k8s-operator: support default proxy class in k8s-operator (#12711 ) Signed-off-by: ChandonPierre <cpierre@coreweave.com> Closes #12421	3 months ago
pierig-n3xtio	2105773874	cmd/k8s-operator/deploy: replace wildcards in Kubernetes Operator RBAC role definitions with verbs cmd/k8s-operator/deploy: replace wildcards in Kubernetes Operator RBAC role definitions with verbs fixes: #13168 Signed-off-by: Pierig Le Saux <pierig@n3xt.io>	3 months ago
tomholford	16bb541adb	wgengine/magicsock: replace deprecated poly1305 (#13184 ) Signed-off-by: tomholford <tomholford@users.noreply.github.com>	3 months ago
Kyle Carberry	6c852fa817	go.{mod,sum}: migrate from nhooyr.io/websocket to github.com/coder/websocket Coder has just adopted nhooyr/websocket which unfortunately changes the import path. `github.com/coder/coder` imports `tailscale.com/net/wsconn` which was still pointing to `nhooyr.io/websocket`, but this change updates it. See https://coder.com/blog/websocket Updates #13154 Change-Id: I3dec6512472b14eae337ae22c5bcc1e3758888d5 Signed-off-by: Kyle Carberry <kyle@carberry.com>	3 months ago
Irbe Krumina	a15ff1bade	cmd/k8s-operator,k8s-operator/sessionrecording: support recording kubectl exec sessions over WebSockets (#12947 ) cmd/k8s-operator,k8s-operator/sessionrecording: support recording WebSocket sessions Kubernetes currently supports two streaming protocols, SPDY and WebSockets. WebSockets are replacing SPDY, see https://github.com/kubernetes/enhancements/issues/4006. We were currently only supporting SPDY, erroring out if session was not SPDY and relying on the kube's built-in SPDY fallback. This PR: - adds support for parsing contents of 'kubectl exec' sessions streamed over WebSockets - adds logic to distinguish 'kubectl exec' requests for a SPDY/WebSockets sessions and call the relevant handler Updates tailscale/corp#19821 Signed-off-by: Irbe Krumina <irbe@tailscale.com> Co-authored-by: Tom Proctor <tomhjp@users.noreply.github.com>	3 months ago
Brad Fitzpatrick	4c2e978f1e	cmd/tailscale/cli: support passing network lock keys via files Fixes tailscale/corp#22356 Change-Id: I959efae716a22bcf582c20d261fb1b57bacf6dd9 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Irbe Krumina	adbab25bac	cmd/k8s-operator: fix DNS reconciler for dual-stack clusters (#13057 ) * cmd/k8s-operator: fix DNS reconciler for dual-stack clusters This fixes a bug where DNS reconciler logic was always assuming that no more than one EndpointSlice exists for a Service. In fact, there can be multiple, for example, in dual-stack clusters, but also in other cases this is valid (as per kube docs). This PR: - allows for multiple EndpointSlices - picks out the ones for IPv4 family - deduplicates addresses Updates tailscale/tailscale#13056 Signed-off-by: Irbe Krumina <irbe@tailscale.com> Co-authored-by: Tom Proctor <tomhjp@users.noreply.github.com>	3 months ago
Nick Khyl	67df9abdc6	util/syspolicy/setting: add package that contains types for the next syspolicy PRs Package setting contains types for defining and representing policy settings. It facilitates the registration of setting definitions using Register and RegisterDefinition, and the retrieval of registered setting definitions via Definitions and DefinitionOf. This package is intended for use primarily within the syspolicy package hierarchy, and added in a preparation for the next PRs. Updates #12687 Signed-off-by: Nick Khyl <nickk@tailscale.com>	3 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
Irbe Krumina	a21bf100f3	cmd/k8s-operator,k8s-operator/sessionrecording,sessionrecording,ssh/tailssh: refactor session recording functionality (#12945 ) cmd/k8s-operator,k8s-operator/sessionrecording,sessionrecording,ssh/tailssh: refactor session recording functionality Refactor SSH session recording functionality (mostly the bits related to Kubernetes API server proxy 'kubectl exec' session recording): - move the session recording bits used by both Tailscale SSH and the Kubernetes API server proxy into a shared sessionrecording package, to avoid having the operator to import ssh/tailssh - move the Kubernetes API server proxy session recording functionality into a k8s-operator/sessionrecording package, add some abstractions in preparation for adding support for a second streaming protocol (WebSockets) Updates tailscale/corp#19821 Signed-off-by: Irbe Krumina <irbe@tailscale.com>	4 months ago

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189 Commits (c3306bfd15e761e0ad38e3e3970becd0d301e4c7)