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>	3 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
Andrea Gottardo	90be06bd5b	health: introduce captive-portal-detected Warnable (#12707 ) Updates tailscale/tailscale#1634 This PR introduces a new `captive-portal-detected` Warnable which is set to an unhealthy state whenever a captive portal is detected on the local network, preventing Tailscale from connecting. ipn/ipnlocal: fix captive portal loop shutdown Change-Id: I7cafdbce68463a16260091bcec1741501a070c95 net/captivedetection: fix mutex misuse ipn/ipnlocal: ensure that we don't fail to start the timer Change-Id: I3e43fb19264d793e8707c5031c0898e48e3e7465 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Signed-off-by: Andrea Gottardo <andrea@gottardo.me>	4 months ago
Nick Khyl	726d5d507d	cmd/k8s-operator: update depaware.txt This fixes an issue caused by the merge order of `2b638f550d` and `8bd442ba8c`. Updates #Cleanup Signed-off-by: Nick Khyl <nickk@tailscale.com>	4 months ago
Nick Khyl	e21d8768f9	types/opt: add generic Value[T any] for optional values of any types Updates #12736 Signed-off-by: Nick Khyl <nickk@tailscale.com>	4 months ago
Irbe Krumina	ba517ab388	cmd/k8s-operator,ssh/tailssh,tsnet: optionally record 'kubectl exec' sessions via Kubernetes operator's API server proxy (#12274 ) cmd/k8s-operator,ssh/tailssh,tsnet: optionally record kubectl exec sessions The Kubernetes operator's API server proxy, when it receives a request for 'kubectl exec' session now reads 'RecorderAddrs', 'EnforceRecorder' fields from tailcfg.KubernetesCapRule. If 'RecorderAddrs' is set to one or more addresses (of a tsrecorder instance(s)), it attempts to connect to those and sends the session contents to the recorder before forwarding the request to the kube API server. If connection cannot be established or fails midway, it is only allowed if 'EnforceRecorder' is not true (fail open). Updates tailscale/corp#19821 Signed-off-by: Irbe Krumina <irbe@tailscale.com> Co-authored-by: Maisem Ali <maisem@tailscale.com>	4 months ago
Maisem Ali	2b638f550d	cmd/k8s-operator: add depaware.txt Updates #12742 Signed-off-by: Maisem Ali <maisem@tailscale.com>	4 months ago

8 Commits (1dd9c44d51535f4234163f0c7576a844fd296ead)