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db733ccd65
Commit Graph

103 Commits

Author SHA1 Message Date
Jason A. Donenfeld
db733ccd65 tun: windows: rearrange struct to avoid alignment trap on 32bit 
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
 2021-05-07 09:19:00 +02:00
Jason A. Donenfeld
69a42a4eef tun: windows: send MTU update when forced MTU changes 
Otherwise the padding doesn't get updated.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
 2021-05-05 11:42:45 +02:00
Jason A. Donenfeld
097af6e135 tun: windows: protect reads from closing 
The code previously used the old errors channel for checking, rather
than the simpler boolean, which caused issues on shutdown, since the
errors channel was meaningless. However, looking at this exposed a more
basic problem: Close() and all the other functions that check the closed
boolean can race. So protect with a basic RW lock, to ensure that
Close() waits for all pending operations to complete.

Reported-by: Joshua Sjoding <joshua.sjoding@scjalliance.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
 2021-04-26 22:22:45 -04:00
Brad Fitzpatrick
0f4809f366 tun: make NativeTun.Close well behaved, not crash on double close 
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2021-02-22 15:26:29 +01:00
Jason A. Donenfeld
d4112d9096 global: bump copyright 
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
 2021-01-28 17:52:15 +01:00
Jason A. Donenfeld
d664444928 tun: make customization of WintunPool and requested GUID more obvious 
Persnickety consumers can now do:

    func init() {
        tun.WintunPool, _ = wintun.MakePool("Flurp")
        tun.WintunStaticRequestedGUID, _ = windows.GUIDFromString("{5ae2716f-0b3e-4dc4-a8b5-48eba11a6e16}")
    }

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
 2021-01-07 14:49:44 +01:00
Simon Rozman
c9fabbd5bf wintun: log when reboot is suggested by Windows 
Which really shouldn't happen. But it is a useful information for
troubleshooting.

Signed-off-by: Simon Rozman <simon@rozman.si>
 2020-11-25 13:58:11 +01:00
Simon Rozman
4cc7a7a455 wintun: keep original error when Wintun session start fails 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2020-11-25 13:57:05 +01:00
Jason A. Donenfeld
82128c47d9 global: switch to using %w instead of %v for Errorf 
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
 2020-11-07 21:56:32 +01:00
Simon Rozman
a3b231b31e wintun: ring management moved to wintun.dll 
Signed-off-by: Simon Rozman <simon@rozman.si>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
 2020-11-07 15:20:49 +01:00
Simon Rozman
3e08b8aee0 wintun: migrate to wintun.dll API 
Rather than having every application using Wintun driver reinvent the
wheel, the Wintun device/adapter/interface management has been moved
from wireguard-go to wintun.dll deployed with Wintun itself.

Signed-off-by: Simon Rozman <simon@rozman.si>
 2020-11-07 12:46:35 +01:00
Jason A. Donenfeld
db0aa39b76 global: update header comments and modules 
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
 2020-05-02 02:08:26 -06:00
Jason A. Donenfeld
4fa2ea6a2d tun: windows: serialize write calls 2020-01-07 11:40:45 -05:00
Jason A. Donenfeld
2b242f9393 wintun: manage ring memory manually 
It's large and Go's garbage collector doesn't deal with it especially
well.
 2019-11-22 13:13:55 +01:00
Avery Pennarun
1b6c8ddbe8 tun: match windows CreateTUN signature to the Linux variant 
Signed-off-by: Avery Pennarun <apenwarr@gmail.com>
[zx2c4: fix default value]
 2019-10-17 15:19:20 +02:00
Jason A. Donenfeld
1f146a5e7a wintun: expose version 2019-10-08 09:58:58 +02:00
Jason A. Donenfeld
bb0b2514c0 tun: windows: unify error message format 2019-09-08 13:52:44 -05:00
Jason A. Donenfeld
14df9c3e75 wintun: take mutex so that deletion uses the right name 2019-08-30 15:34:17 +02:00
Jason A. Donenfeld
353f0956bc wintun: move ring constants into module 2019-08-29 13:22:17 -06:00
Jason A. Donenfeld
d94bae8348 wintun: Wintun->Interface 2019-08-29 12:20:40 -06:00
Simon Rozman
69c26dc258 wintun: introduce adapter pools 
This makes wintun package reusable for non-WireGuard applications.

Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-08-29 18:00:44 +02:00
Jason A. Donenfeld
0c540ad60e wintun: make description consistent across fields 2019-08-24 12:29:17 +02:00
Jason A. Donenfeld
01786286c1 tun: windows: don't spin unless we really need it 2019-08-19 10:12:50 +02:00
Jason A. Donenfeld
b4010123f7 tun: windows: spin for only a millisecond/80 
Performance stays the same as before.
 2019-08-03 19:11:21 +02:00
Jason A. Donenfeld
eeeac287ef tun: windows: style 2019-07-23 11:45:48 +02:00
Jason A. Donenfeld
5ba866a5c8 tun: windows: close event handle on shutdown 2019-07-22 09:37:20 +02:00
Jason A. Donenfeld
3341e2d444 tun: windows: get rid of retry logic 
Things work fine on Windows 8.
 2019-07-19 14:01:34 +02:00
Jason A. Donenfeld
1b550f6583 tun: windows: use specific IOCTL code 2019-07-19 08:30:19 +02:00
Jason A. Donenfeld
31ff9c02fe tun: windows: open file at startup time 2019-07-18 19:27:27 +02:00
Jason A. Donenfeld
1e39c33ab1 tun: windows: silently drop packet when ring is full 2019-07-18 15:48:34 +02:00
Jason A. Donenfeld
6c50fedd8e tun: windows: switch to NDIS device object 2019-07-18 12:26:57 +02:00
Jason A. Donenfeld
9ea9a92117 tun: windows: spin for a bit before falling back to event object 2019-07-18 10:25:20 +02:00
Simon Rozman
2e24e7dcae tun: windows: implement ring buffers 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-07-17 14:32:13 +02:00
Jason A. Donenfeld
5c3d333f10 tun: windows: registration of write buffer no longer required 2019-07-05 14:17:48 +02:00
Jason A. Donenfeld
d8448f8a02 tun: windows: decrease alignment to 4 2019-07-05 07:53:19 +02:00
Jason A. Donenfeld
13abbdf14b tun: windows: delay initial write 
Otherwise we provoke Wintun 0.3.
 2019-07-04 22:41:42 +02:00
Jason A. Donenfeld
b844f1b3cc tun: windows: packetNum is unused 2019-07-01 15:23:44 +02:00
Jason A. Donenfeld
5e6eff81b6 tun: windows: inform wintun of maximum buffer length for writes 2019-06-26 13:27:48 +02:00
Jason A. Donenfeld
c69d026649 tun: windows: never retry open on Windows 10 2019-06-18 17:51:29 +02:00
Matt Layher
1f48971a80 tun: remove TUN prefix from types to reduce stutter elsewhere 
Signed-off-by: Matt Layher <mdlayher@gmail.com>
 2019-06-14 18:35:57 +02:00
Jason A. Donenfeld
a304f69e0d wintun: fix comments and remove hwnd param 
This now looks more idiomatic.
 2019-06-10 11:03:36 +02:00
Jason A. Donenfeld
e924280baa wintun: allow controlling GUID 2019-06-10 10:43:02 +02:00
Jason A. Donenfeld
eaf17becfa global: fixup TODO comment spacing 2019-06-06 23:00:15 +02:00
Simon Rozman
c2ed133df8 wintun: simplify DeleteInterface method signature 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-06-06 08:58:26 +02:00
Simon Rozman
e4b0ef29a1 tun: windows: obsolete 256 packets per exchange buffer limitation 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-06-05 11:55:28 +02:00
Jason A. Donenfeld
da61947ec3 tun: windows: mitigate infinite loop in Flush() 
It's possible that for whatever reason, we keep returning EOF, resulting
in repeated close/open/write operations, except with empty packets.
 2019-05-31 16:55:03 +02:00
Jason A. Donenfeld
d4034e5f8a wintun: remove extra / 2019-05-26 02:20:01 +02:00
Simon Rozman
6a0a3a5406 wintun: revise GetInterface() 
- Make foreign interface found error numeric to ease condition
  detection.
- Update GetInterface() documentation.
- Make tun.CreateTUN() quit when foreign interface found before
  attempting to create a Wintun interface with a duplicate name.
  Creation is futile.

Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-05-24 09:29:57 +02:00
Simon Rozman
dc9bbec9db setupapi: trim "Get" from getters 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-05-22 19:31:52 +02:00
Jason A. Donenfeld
a6dbe4f475 wintun: don't try to flush interface, but rather delete 2019-05-17 16:06:02 +02:00