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2023-10-10conn, device: use UDP GSO and GRO on LinuxJordan Whited
StdNetBind probes for UDP GSO and GRO support 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. 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 052af4a without UDP GSO or GRO. Starting Test: protocol: TCP, 1 streams, 131072 byte blocks [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-10.00 sec 9.85 GBytes 8.46 Gbits/sec 1139 3.01 MBytes - - - - - - - - - - - - - - - - - - - - - - - - - Test Complete. Summary Results: [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 9.85 GBytes 8.46 Gbits/sec 1139 sender [ 5] 0.00-10.04 sec 9.85 GBytes 8.42 Gbits/sec receiver The second result is with UDP GSO and GRO. Starting Test: protocol: TCP, 1 streams, 131072 byte blocks [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-10.00 sec 12.3 GBytes 10.6 Gbits/sec 232 3.15 MBytes - - - - - - - - - - - - - - - - - - - - - - - - - Test Complete. Summary Results: [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 12.3 GBytes 10.6 Gbits/sec 232 sender [ 5] 0.00-10.04 sec 12.3 GBytes 10.6 Gbits/sec receiver Reviewed-by: Adrian Dewhurst <adrian@tailscale.com> Signed-off-by: Jordan Whited <jordan@tailscale.com> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2023-03-17go.mod: bump to Go 1.20Jordan Whited
Reviewed-by: Maisem Ali <maisem@tailscale.com> Signed-off-by: Jordan Whited <jordan@tailscale.com> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2023-03-10go.mod: bump depsJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2023-03-10conn, device, tun: implement vectorized I/O on LinuxJordan Whited
Implement TCP offloading via TSO and GRO for the Linux tun.Device, which is made possible by virtio extensions in the kernel's TUN driver. Delete conn.LinuxSocketEndpoint in favor of a collapsed conn.StdNetBind. conn.StdNetBind makes use of recvmmsg() and sendmmsg() on Linux. All platforms now fall under conn.StdNetBind, except for Windows, which remains in conn.WinRingBind, which still needs to be adjusted to handle multiple packets. Also refactor sticky sockets support to eventually be applicable on platforms other than just Linux. However Linux remains the sole platform that fully implements it for now. Co-authored-by: James Tucker <james@tailscale.com> Signed-off-by: James Tucker <james@tailscale.com> Signed-off-by: Jordan Whited <jordan@tailscale.com> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2023-02-07tun/netstack: bump gvisorColin Adler
Bump gVisor to a recent known-good version. Signed-off-by: Colin Adler <colin1adler@gmail.com> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2022-09-04all: use Go 1.19 and its atomic typesBrad Fitzpatrick
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2022-08-29tun/netstack: remove separate moduleJason A. Donenfeld
Now that the gvisor deps aren't insane, we can just do this in the main module. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2022-03-16mod: bump packages and remove compat netipJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2022-03-16all: update to Go 1.18Josh Bleecher Snyder
Bump go.mod and README. Switch to upstream net/netip. Use strings.Cut. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-11-23global: use netip where possible nowJason A. Donenfeld
There are more places where we'll need to add it later, when Go 1.18 comes out with support for it in the "net" package. Also, allowedips still uses slices internally, which might be suboptimal. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-11-04tun: move wintun to its own repoJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-10-20wintun: allow retrieving DLL versionJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-10-11memmod: import from wireguard-windowsJason A. Donenfeld
We'll eventually be getting rid of it here, but keep it sync'd up for now. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-09-27rwcancel: use unix.Poll again but bump x/sys so it uses ppoll under the hoodJason A. Donenfeld
This reverts commit fcc601dbf0f6b626ec1d47a880cbe64f9c8fe385 but then bumps go.mod. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-05-25go.mod: bump golang.org/x/sys againJosh Bleecher Snyder
To pick up https://go-review.googlesource.com/c/sys/+/307129. Signed-off-by: Josh Bleecher Snyder <josharian@gmail.com>
2021-03-08mod: bump x/sysJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-02-25conn: implement RIO for fast Windows UDP socketsJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-02-16conn: bump to 1.16 and get rid of NetErrClosed hackJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-01-21netstack: further sequester with own go.mod and go.sumJason A. Donenfeld
In order to avoid even the flirtation with passing on these dependencies to ordinary consumers of wireguard-go, this commit makes a new go.mod that's entirely separate from the root one. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-01-20device: allow compiling with Go 1.15Jason A. Donenfeld
Until we depend on Go 1.16 (which isn't released yet), alias our own variable to the private member of the net package. This will allow an easy find replace to make this go away when we eventually switch to 1.16. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-01-13tun: add tcpip stack tunnel abstractionJason A. Donenfeld
This allows people to initiate connections over WireGuard without any underlying operating system support. I'm not crazy about the trash it adds to go.sum, but the code this actually adds to the binaries seems contained to the gvisor repo. For the TCP/IP implementation, it uses gvisor. And it borrows some internals from the Go standard library's resolver in order to bring Dial and DialContext to tun_net, along with the LookupHost helper function. This allows for things like HTTP2-over-TLS to work quite well: package main import ( "io" "log" "net" "net/http" "golang.zx2c4.com/wireguard/device" "golang.zx2c4.com/wireguard/tun" ) func main() { tun, tnet, err := tun.CreateNetTUN([]net.IP{net.ParseIP("192.168.4.29")}, []net.IP{net.ParseIP("8.8.8.8"), net.ParseIP("8.8.4.4")}, 1420) if err != nil { log.Panic(err) } dev := device.NewDevice(tun, &device.Logger{log.Default(), log.Default(), log.Default()}) dev.IpcSet(`private_key=a8dac1d8a70a751f0f699fb14ba1cff7b79cf4fbd8f09f44c6e6a90d0369604f public_key=25123c5dcd3328ff645e4f2a3fce0d754400d3887a0cb7c56f0267e20fbf3c5b endpoint=163.172.161.0:12912 allowed_ip=0.0.0.0/0 `) dev.Up() client := http.Client{ Transport: &http.Transport{ DialContext: tnet.DialContext, }, } resp, err := client.Get("https://www.zx2c4.com/ip") if err != nil { log.Panic(err) } body, err := io.ReadAll(resp.Body) if err != nil { log.Panic(err) } log.Println(string(body)) } Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-01-08device: receive: do not exit immediately on transient UDP receive errorsJason A. Donenfeld
Some users report seeing lines like: > Routine: receive incoming IPv4 - stopped Popping up unexpectedly. Let's sleep and try again before failing, and also log the error, and perhaps we'll eventually understand this situation better in future versions. Because we have to distinguish between the socket being closed explicitly and whatever error this is, we bump the module to require Go 1.16. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-01-07device: make test setup more robustJosh Bleecher Snyder
Picking two free ports to use for a test is difficult. The free port we selected might no longer be free when we reach for it a second time. On my machine, this failure mode led to failures approximately once per thousand test runs. Since failures are rare, and threading through and checking for all possible errors is complicated, fix this with a big hammer: Retry if either device fails to come up. Also, if you accidentally pick the same port twice, delightful confusion ensues. The handshake failures manifest as crypto errors, which look scary. Again, fix with retries. To make these retries easier to implement, use testing.T.Cleanup instead of defer to close devices. This requires Go 1.14. Update go.mod accordingly. Go 1.13 is no longer supported anyway. With these fixes, 'go test -race' ran 100,000 times without failure. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2020-11-27memmod: fix import loading function usageJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2020-11-18mod: bumpJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2020-11-07mod: update depsJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2020-11-07wintun: load wintun.dll from RCDATA resourceSimon Rozman
Signed-off-by: Simon Rozman <simon@rozman.si> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2020-10-27go.mod: bump golang.org/x/sys to latest versionTobias Klauser
This adds the fixes for golang/go#41868 which are needed to build wireguard without direct syscalls on macOS. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2020-10-21tun/wintun/registry: fix Go 1.15 race/checkptr failureBrad Fitzpatrick
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com> [Jason: ran go mod tidy.] Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2020-05-02global: update header comments and modulesJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2020-05-02device: return generic error from Ipc{Get,Set}Operation.David Anderson
This makes uapi.go's public API conform to Go style in terms of error types. Signed-off-by: David Anderson <danderson@tailscale.com>
2020-03-17global: use RTMGRP_* consts from x/sys/unixTobias Klauser
Update the golang.org/x/sys/unix dependency and use the newly introduced RTMGRP_* consts instead of using the corresponding RTNLGRP_* const to create a mask. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2019-10-04mod: bump versionsJason A. Donenfeld
2019-08-30wintun: take mutex so that deletion uses the right nameJason A. Donenfeld
2019-06-18tun: windows: never retry open on Windows 10Jason A. Donenfeld
2019-06-06wintun: guid functions are upstreamJason A. Donenfeld
2019-05-23ipc: use simplified fork of winioJason A. Donenfeld
2019-05-03mod: update depsJason A. Donenfeld
2019-04-29go.mod: use vendored winioJason A. Donenfeld
2019-04-13windows: use proper constants from updated x/sysJason A. Donenfeld
2019-03-20tun: windows: use new constants in sysJason A. Donenfeld
2019-03-03global: begin modularizationJason A. Donenfeld
2019-02-18Change package pathJason A. Donenfeld
2019-02-14Bump dependencies for ARM ChaCha20Jason A. Donenfeld
2019-02-05Import windows scafoldingJason A. Donenfeld
2018-12-10Update go x/ librariesJason A. Donenfeld
Android 9's Bionic disallows inotify_init with seccomp, so we want the latest unix change, and while we're at it, we update the others too. Reported-by: Berk D. Demir <bdd@mindcast.org> Go CL: https://go-review.googlesource.com/c/sys/+/153318 Fixes: https://lists.zx2c4.com/pipermail/wireguard/2018-December/003642.html
2018-10-09Switch to go modulesJason A. Donenfeld
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