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2020-04-02tun: return a better error message if /dev/net/tun doesn't existBrad Fitzpatrick
It was just returning "no such file or directory" (the String of the syscall.Errno returned by CreateTUN). Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2020-04-02tun: NetlinkListener: don't send EventDown before sending EventUpAvery Pennarun
This works around a startup race condition when competing with HackListener, which is trying to do the same job. If HackListener detects that the tundev is running while there is still an event in the netlink queue that says it isn't running, then the device receives a string of events like EventUp (HackListener) EventDown (NetlinkListener) EventUp (NetlinkListener) Unfortunately, after the first EventDown, the device stops itself, thinking incorrectly that the administrator has downed its tundev. The device is ignoring the initial EventDown anyway, so just don't emit it. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>
2020-04-01tuntest: split out testing packageDavid Crawshaw
This code is useful to other packages writing tests. Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
2020-03-30tun: fix data race on name fieldBrad Fitzpatrick
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2020-03-30tun: remove unused isUp methodBrad Fitzpatrick
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2020-03-30wintun: split error message for create vs open namespace.Avery Pennarun
Signed-off-by: Avery Pennarun <apenwarr@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>
2020-01-15tun: darwin: ignore ENOMEM errorsJason A. Donenfeld
Coauthored-by: Andrej Mihajlov <and@mullvad.net>
2020-01-07tun: windows: serialize write callsJason A. Donenfeld
2019-11-22wintun: manage ring memory manuallyJason A. Donenfeld
It's large and Go's garbage collector doesn't deal with it especially well.
2019-10-22global: fix a few typos courtesy of codespellJonathan Tooker
Signed-off-by: Jonathan Tooker <jonathan.tooker@netprotect.com>
2019-10-21namespaceapi: remove tasteless commentJason A. Donenfeld
2019-10-17wintun: normalize variable names for their typesJason A. Donenfeld
2019-10-17wintun: quickly ignore non-Wintun devicesAvery Pennarun
Some devices take ~2 seconds to enumerate on Windows if we try to get their instance name. The hardware id property, on the other hand, is available right away. Signed-off-by: Avery Pennarun <apenwarr@gmail.com> [zx2c4: inlined this to where it makes sense, reused setupapi const]
2019-10-17tun: match windows CreateTUN signature to the Linux variantAvery Pennarun
Signed-off-by: Avery Pennarun <apenwarr@gmail.com> [zx2c4: fix default value]
2019-10-08wintun: expose versionJason A. Donenfeld
2019-10-04mod: bump versionsJason A. Donenfeld
2019-09-16winpipe: use x/sys/windows instead of syscallJason A. Donenfeld
2019-09-16wintun: use correct length for security attributesJason A. Donenfeld
2019-09-08tun: windows: unify error message formatJason A. Donenfeld
2019-09-07tun: openbsd: check for interface already being upJason A. Donenfeld
In some cases, we operate on an already-up interface, or the user brings up the interface before we start monitoring. For those situations, we should first check if the interface is already up. This still technically races between the initial check and the start of the route loop, but fixing that is a bit ugly and probably not worth it at the moment. Reported-by: Theo Buehler <tb@theobuehler.org>
2019-09-05namespaceapi: AddSIDToBoundaryDescriptor modifies the handleJason A. Donenfeld
2019-09-01wintun: take mutex first alwaysJason A. Donenfeld
This prevents an ABA deadlock with setupapi's internal locks.
2019-09-01wintun: consider abandoned mutexes as releasedJason A. Donenfeld
2019-08-30wintun: put mutex into private namespaceJason A. Donenfeld
2019-08-30namespaceapi: fix mistakeJason A. Donenfeld
2019-08-30namespaceapi: initial versionSimon Rozman
Signed-off-by: Simon Rozman <simon@rozman.si>
2019-08-30wintun: take mutex so that deletion uses the right nameJason A. Donenfeld
2019-08-29wintun: move ring constants into moduleJason A. Donenfeld
2019-08-29wintun: delete all interfaces is not used anymoreJason A. Donenfeld
2019-08-29wintun: Wintun->InterfaceJason A. Donenfeld
2019-08-29wintun: keep reference to pool in wintun objectJason A. Donenfeld
2019-08-29wintun: introduce adapter poolsSimon Rozman
This makes wintun package reusable for non-WireGuard applications. Signed-off-by: Simon Rozman <simon@rozman.si>
2019-08-28wintun: simplify rename logicJason A. Donenfeld
2019-08-28wintun: give better errors when ndis interface listing failsJason A. Donenfeld
2019-08-28wintun: also check for numbered suffix and friendly nameJason A. Donenfeld
2019-08-28wintun: upgrade deleting all interfaces and make it reusableSimon Rozman
DeleteAllInterfaces() didn't check if SPDRP_DEVICEDESC == "WireGuard Tunnel". It deleted _all_ Wintun adapters, not just WireGuard's. Furthermore, the DeleteAllInterfaces() was upgraded into a new function called DeleteMatchingInterfaces() for selectively deletion. This will be used by WireGuard to clean stale Wintun adapters. Signed-off-by: Simon Rozman <simon@rozman.si>
2019-08-27wintun: cleanup earlierJason A. Donenfeld
2019-08-27wintun: rename duplicate adapters instead of ourselvesJason A. Donenfeld
2019-08-26wintun: match suffix numbersJason A. Donenfeld
2019-08-24wintun: make description consistent across fieldsJason A. Donenfeld
2019-08-22wintun: try multiple names until one isn't a duplicateJason A. Donenfeld
2019-08-21wintun: use nci.dll directly instead of buggy netshellJason A. Donenfeld
2019-08-20wintun: set friendly a bit betterJason A. Donenfeld
This is still wrong, but NETSETUPPKEY_Driver_FriendlyName seems a bit tricky to use.
2019-08-19wintun: also set friendly name after setting interface nameJason A. Donenfeld
2019-08-19wintun: defer requires unique variableJason A. Donenfeld
2019-08-19wintun: set adapter description nameJason A. Donenfeld
2019-08-19tun: windows: don't spin unless we really need itJason A. Donenfeld
2019-08-03tun: windows: spin for only a millisecond/80Jason A. Donenfeld
Performance stays the same as before.
2019-08-02wintun: merge opening device registry keySimon Rozman
This also introduces waiting for key to appear on initial access. See if this resolves the issue caused by HDD power-up delay resulting in failure to create the adapter. Signed-off-by: Simon Rozman <simon@rozman.si>
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