snow/wireguard-go
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Author SHA1 Message Date
Jason A. Donenfeld 73d3bd9cd5 wintun: take mutex first always 
This prevents an ABA deadlock with setupapi's internal locks.
 2019-09-01 21:32:28 -06:00
Jason A. Donenfeld f3dba4c194 wintun: consider abandoned mutexes as released 2019-09-01 21:25:47 -06:00
Jason A. Donenfeld 950ca2ba8c wintun: put mutex into private namespace 2019-08-30 11:03:21 -06:00
Jason A. Donenfeld df2bf34373 namespaceapi: fix mistake 2019-08-30 09:59:36 -06:00
Simon Rozman a12b765784 namespaceapi: initial version 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-08-30 15:34:17 +02:00
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 fa7763c268 wintun: delete all interfaces is not used anymore 2019-08-29 12:22:15 -06:00
Jason A. Donenfeld d94bae8348 wintun: Wintun->Interface 2019-08-29 12:20:40 -06:00
Jason A. Donenfeld 7689d09336 wintun: keep reference to pool in wintun object 2019-08-29 12:13:16 -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 e862131d3c wintun: simplify rename logic 2019-08-28 19:31:20 -06:00
Jason A. Donenfeld da28a3e9f3 wintun: give better errors when ndis interface listing fails 2019-08-28 08:39:26 -06:00
Jason A. Donenfeld 3bf3322b2c wintun: also check for numbered suffix and friendly name 2019-08-28 08:08:07 -06:00
Simon Rozman 7305b4ce93 wintun: upgrade deleting all interfaces and make it reusable 
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>
 2019-08-28 11:39:01 +02:00
Jason A. Donenfeld 26fb615b11 wintun: cleanup earlier 2019-08-27 11:59:15 -06:00
Jason A. Donenfeld 7fbb24afaa wintun: rename duplicate adapters instead of ourselves 2019-08-27 11:59:15 -06:00
Jason A. Donenfeld d9008ac35c wintun: match suffix numbers 2019-08-26 14:46:43 -06:00
Jason A. Donenfeld 0c540ad60e wintun: make description consistent across fields 2019-08-24 12:29:17 +02:00
Jason A. Donenfeld 3cedc22d7b wintun: try multiple names until one isn't a duplicate 2019-08-22 08:52:59 +02:00
Jason A. Donenfeld 68fea631d8 wintun: use nci.dll directly instead of buggy netshell 2019-08-21 09:16:12 +02:00
Jason A. Donenfeld ef23100a4f wintun: set friendly a bit better 
This is still wrong, but NETSETUPPKEY_Driver_FriendlyName seems a bit
tricky to use.
 2019-08-20 16:06:55 +02:00
Jason A. Donenfeld eb786cd7c1 wintun: also set friendly name after setting interface name 2019-08-19 10:12:50 +02:00
Jason A. Donenfeld 333de75370 wintun: defer requires unique variable 2019-08-19 10:12:50 +02:00
Jason A. Donenfeld d20459dc69 wintun: set adapter description name 2019-08-19 10:12:50 +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
Simon Rozman 1ff37e2b07 wintun: merge opening device registry key 
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>
 2019-08-02 16:08:49 +02:00
Simon Rozman f5e54932e6 wintun: simplify checking reboot requirement 
We never checked checkReboot() reported error anyway.

Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-08-02 16:08:49 +02:00
Simon Rozman 73698066d1 wintun: refactor err == nil error checking 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-08-02 15:18:58 +02:00
Jason A. Donenfeld 05ece4d167 wintun: handle error for deadgwdetect 2019-08-02 14:37:09 +02:00
Jason A. Donenfeld 6d78f89557 tun: darwin: do not attempt to close tun.event twice 
Previously it was possible for this to race. It turns out we really
don't need to set anything to -1 anyway.
 2019-08-02 12:24:17 +02:00
Jason A. Donenfeld a2249449d6 wintun: get interface path properly with cfgmgr 2019-07-23 14:58:46 +02:00
Jason A. Donenfeld eeeac287ef tun: windows: style 2019-07-23 11:45:48 +02:00
Jason A. Donenfeld b5a7cbf069 wintun: simplify resolution of dev node 2019-07-23 11:45:13 +02:00
Jason A. Donenfeld 50cd522cb0 wintun: enable sharing of pnp node 2019-07-22 17:01:27 +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 298d759f3e wintun: calculate path of NDIS device object symbolic link 2019-07-18 10:25:20 +02:00
Michael Zeltner 4d5819183e tun: openbsd: don't change MTU when it's already the expected size 
Allows for running wireguard-go as non-root user.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
 2019-07-18 10:25:20 +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 41fdbf0971 wintun: increase registry timeout 2019-06-11 00:33:07 +02:00
Jason A. Donenfeld 03eee4a778 wintun: add helper for cleaning up 2019-06-10 11:34:59 +02:00
Jason A. Donenfeld 700860f8e6 wintun: simplify error matching and remove dumb comments 2019-06-10 11:10:49 +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
Simon Rozman baafe92888 setupapi: add SetDeviceRegistryPropertyString description 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-06-10 10:43:04 +02:00
Simon Rozman a1a97d1e41 setupapi: unify ERROR_INSUFFICIENT_BUFFER handling 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-06-10 10:43:03 +02:00
Jason A. Donenfeld e924280baa wintun: allow controlling GUID 2019-06-10 10:43:02 +02:00
Jason A. Donenfeld bb3f1932fa setupapi: add DeviceInstanceID() 2019-06-10 10:43:01 +02:00
Jason A. Donenfeld eaf17becfa global: fixup TODO comment spacing 2019-06-06 23:00:15 +02:00
Jason A. Donenfeld 6d8b68c8f3 wintun: guid functions are upstream 2019-06-06 22:39:20 +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
Jason A. Donenfeld 108c37a056 wintun: don't run HrRenameConnection in separate thread 
It's very slow, but unfortunately we haven't a choice. NLA needs this to
have completed.
 2019-06-05 13:09:20 +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
Simon Rozman 625e445b22 setupapi, wintun: replace syscall with golang.org/x/sys/windows 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-06-04 14:54:56 +02:00
Simon Rozman 85b85e62e5 wintun: set DI_QUIETINSTALL flag for GUI-less device management 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-06-04 14:45:23 +02:00
Simon Rozman 014f736480 setupapi: define PropChangeParams struct 
This structure is required for calling DIF_PROPERTYCHANGE installer
class.

Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-06-04 14:45:23 +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
Matt Layher 32912dc778 device, tun: rearrange code and fix device tests 
Signed-off-by: Matt Layher <mdlayher@gmail.com>
 2019-05-29 18:34:55 +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
Jason A. Donenfeld 8fdcf5ee30 wintun: never return nil, nil 2019-05-23 15:25:53 +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
Jason A. Donenfeld 95c70b8032 wintun: make certain methods private 2019-05-17 15:01:08 +02:00
Simon Rozman 7d5f5bcc0d wintun: change acronyms to uppercase 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-05-17 10:22:34 +02:00
Jason A. Donenfeld 3bf41b06ae global: regroup all imports 2019-05-14 09:09:52 +02:00
Jason A. Donenfeld 3147f00089 wintun: registry: fix nits 2019-05-11 17:25:48 +02:00
Simon Rozman 6c1b66802f wintun: registry: revise value reading 
- Make getStringValueRetry() reusable for reading any value type. This
  merges code from GetIntegerValueWait().
- expandString() >> toString() and extend to support REG_MULTI_SZ
  (to return first value of REG_MULTI_SZ). Furthermore, doing our own
  UTF-16 to UTF-8 conversion works around a bug in windows/registry's
  GetStringValue() non-zero terminated string handling.
- Provide toInteger() analogous to toString()
- GetStringValueWait() tolerates and reads REG_MULTI_SZ too now. It
  returns REG_MULTI_SZ[0], making GetFirstStringValueWait() redundant.

Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-05-11 17:14:37 +02:00
Jason A. Donenfeld 5669ed326f wintun: call HrRenameConnection in another thread 2019-05-10 21:31:37 +02:00
Jason A. Donenfeld 2d847a38a2 wintun: add LUID accessor 2019-05-10 21:30:23 +02:00
Jason A. Donenfeld 7a8553aef0 wintun: enumerate faster by using COMPATDRIVER instead of CLASSDRIVER 2019-05-10 20:30:59 +02:00
Jason A. Donenfeld a6045ac042 wintun: destroy devinfolist after usage 2019-05-10 20:19:11 +02:00
Simon Rozman 1c92b48415 wintun: registry: replace REG_NOTIFY with NOTIFY 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-05-10 18:09:20 +02:00
Jason A. Donenfeld c267965bf8 wintun: IpConfig is a MULTI_SZ, and fix errors 2019-05-10 18:06:49 +02:00
Jason A. Donenfeld 1bf1dadf15 wintun: poll for device key 
It's actually pretty hard to guess where it is.
 2019-05-10 17:34:03 +02:00
Jason A. Donenfeld f9dcfccbb7 wintun: fix scope of error object 2019-05-10 16:59:24 +02:00
Simon Rozman 7e962a9932 wintun: wait for interface registry key on device creation 
By using RegNotifyChangeKeyValue(). Also disable dead gateway detection.

Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-05-10 16:43:58 +02:00
Simon Rozman dcb8f1aa6b wintun: fix GUID leading zero padding 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-05-09 12:16:21 +02:00
Jason A. Donenfeld 81ca08f1b3 setupapi: safer aliasing of slice types 2019-05-03 09:34:00 +02:00
Jason A. Donenfeld 2e988467c2 wintun: work around GetInterface staleness bug 2019-05-03 00:42:36 +02:00
Jason A. Donenfeld 46dbf54040 wintun: don't retry when not creating 
The only time we're trying to counteract the race condition is when
we're creating a driver. When we're simply looking up all drivers, it
doesn't make sense to retry.
 2019-05-02 23:53:15 +02:00
Jason A. Donenfeld 247e14693a wintun: try harder to open registry key 
This sucks. Can we please find a deterministic way of doing this
instead?
 2019-04-29 14:00:49 +02:00
Jason A. Donenfeld bb42ec7d18 tun: freebsd: work around numerous kernel panics on shutdown 
There are numerous race conditions. But even this will crash it:

while true; do ifconfig tun0 create; ifconfig tun0 destroy; done

It seems like LLv6 is related, which we're not using anyway, so
explicitly disable it on the interface.
 2019-04-23 18:00:23 +09:00
Simon Rozman f1dc167901 setupapi: Fix struct size mismatches 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-04-19 10:08:11 +02:00
Jason A. Donenfeld c7a26dfef3 setupapi: actually fix padding by rounding up to sizeof(void*) 2019-04-19 10:19:00 +09:00
Jason A. Donenfeld d024393335 tun: darwin: write routeSocket variable in helper 
Otherwise the race detector "complains".
 2019-04-19 07:53:19 +09:00
Simon Rozman 5811447b38 setupapi: Revise DrvInfoDetailData struct size calculation 
Go adds trailing padding to DrvInfoDetailData struct in GOARCH=386 which
confuses SetupAPI expecting exactly sizeof(SP_DRVINFO_DETAIL_DATA).

Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-04-18 10:39:22 +02:00
Jason A. Donenfeld e0a8c22aa6 windows: use proper constants from updated x/sys 2019-04-13 02:02:02 +02:00
Simon Rozman ef5f3ad80a tun: windows: Adopt new error codes returned by Wintun 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-04-11 19:38:11 +02:00
Simon Rozman a291fdd746 tun: windows: do not sleep after OPERATION_ABORTED on write 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-04-11 19:37:04 +02:00
Jason A. Donenfeld e680008700 tun: windows: do not sleep after OPERATION_ABORTED 2019-04-09 07:36:03 +02:00
Simon Rozman 767c86f8cb tun: windows: Retry R/W on ERROR_OPERATION_ABORTED 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-04-04 09:20:18 +02:00
Simon Rozman 421c1f9143 tun: windows: Attempt to reopen handle on all errors 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-04-03 05:41:38 +02:00
Jason A. Donenfeld ac25702eaf wintun: rename device using undocumented API that netsh.exe uses 2019-04-01 12:04:44 +02:00
Jason A. Donenfeld 92f8474832 wintun: add more retry loops 2019-04-01 09:07:43 +02:00
Jason A. Donenfeld 2e0ed4614a tun: windows: cancel ongoing reads on closing and delete after close 
This reverts commit 52ec440d79 and adds
some spice.
 2019-03-26 16:14:32 +01:00
Jason A. Donenfeld 2fa80c0cb7 wintun: query for NetCfgInstanceId several times 2019-03-22 16:48:40 -06:00
Jason A. Donenfeld 52ec440d79 tun: windows: delete interface before deleting file handles 2019-03-22 16:45:58 -06:00
Simon Rozman 2faf2dcf90 tun: windows: Make adapter rename asynchronous 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-22 16:36:30 +01:00
Simon Rozman 41c30a7279 tun: windows: Adapter devices renamed to WINTUN<LUID Index> 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-22 15:29:14 +01:00
Simon Rozman 4b1db1d39b tun: windows: Increase unavailable adapter timeout to 30sec 
5 seconds was too short when debugging.

Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-22 13:52:51 +01:00
Simon Rozman a80db5e65e tun: windows: Make writing persistent too 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-22 13:52:51 +01:00
Simon Rozman 9748a52073 tun: windows: Fix paused adapter test 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-22 13:52:51 +01:00
Jason A. Donenfeld 317d716d66 tun: windows: just open two file handles 2019-03-21 15:20:09 -06:00
Jason A. Donenfeld 6440f010ee receive: implement flush semantics 2019-03-21 14:45:41 -06:00
Jason A. Donenfeld 49ea0c9b1a tun: windows: add dummy overlapped events back 
These seem basically wrong to me, but we get crashes without them.
 2019-03-21 02:29:09 -06:00
Jason A. Donenfeld ca59b60aa7 tun: windows: use new constants in sys 2019-03-20 23:42:30 -06:00
Simon Rozman 91b4e909bb wintun: Use native Win32 API for I/O 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-21 00:56:45 +01:00
Jason A. Donenfeld 03f2e2614a tun: windows: wintun does iocp 2019-03-18 02:42:45 -06:00
Jason A. Donenfeld b0e0ab308d tun: windows: temporary hack for forcing MTU 2019-03-13 02:52:32 -06:00
Jason A. Donenfeld 66fb5caf02 wintun: Poll more often 2019-03-10 03:47:54 +01:00
Simon Rozman c2a2b8d739 wintun: Make errors more descriptive 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-08 10:03:57 +01:00
Simon Rozman 70449f1a97 wintun: Return correct reboot-req flag on CreateInterface() error too 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-08 10:03:57 +01:00
Simon Rozman 33c3528430 wintun: Fix double-quoted strings escaping on output 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-08 10:03:57 +01:00
Simon Rozman 30ab07e354 wintun: Introduce SetupAPI enumerator and machineName consts 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-08 10:03:57 +01:00
Simon Rozman 368dea72fe wintun: Cleanup 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-07 21:12:20 +01:00
Simon Rozman 9b22255cad wintun: Refactor network registry key name generation 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-07 21:12:20 +01:00
Simon Rozman 11f5780250 wintun: Revise interface creation wait 
DIF_INSTALLDEVICE returns almost immediately, while the device
installation continues in the background. It might take a while, before
all registry keys and values are populated.

Previously, wireguard-go waited for HKLM\SYSTEM\CurrentControlSet\
Control\Class\{4D36E972-E325-11CE-BFC1-08002BE10318}\<id> registry key
only.

Followed by a SetInterfaceName() method of Wintun struct which tried to
access HKLM\SYSTEM\CurrentControlSet\Control\Network\
{4D36E972-E325-11CE-BFC1-08002BE10318}\<id>\Connection registry key
might not be available yet.

This commit loops until both registry keys are available before
returning from CreateInterface() function.

Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-07 21:12:20 +01:00
Jason A. Donenfeld 92f72f5aa6 tun: linux: work out netpoll trick 2019-03-07 01:51:41 +01:00
Simon Rozman 1fdf7b19a3 wintun: Resolve some of golint warnings 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-04 16:37:11 +01:00
Simon Rozman a1aabb21ae Elaborate the failing step when forwarding errors on return 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-04 16:37:11 +01:00
Simon Rozman 9041d38e2d Simplify reading NetCfgInstanceId from registry 
As querying non-existing registry value and reading non-existing
registry string value both return ERROR_FILE_NOT_FOUND, we can
use later only.

Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-04 16:37:11 +01:00
Simon Rozman cddfd9a0d8 Unify interface-specific network registry key open 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-04 16:37:11 +01:00
Jason A. Donenfeld 68f0721c6a tun: import mobile particularities 2019-03-04 16:37:11 +01:00
Jason A. Donenfeld 69f0fe67b6 global: begin modularization 2019-03-03 05:00:40 +01:00
Jason A. Donenfeld d435be35ca tun: windows: expose GUID 2019-03-01 00:11:12 +01:00
Jason A. Donenfeld 967d1a0f3d tun: allow special methods in NativeTun 2019-03-01 00:05:57 +01:00
Jason A. Donenfeld 88ff67fb6f tun: linux: netpoll is broken for tun's epoll 
So this mostly reverts the switch to Sysconn for Linux.

Issue: https://github.com/golang/go/issues/30426
 2019-02-27 04:38:26 +01:00
Jason A. Donenfeld 971be13e77 tun: linux: netlink sock needs cleaning up but file will be gc'd 2019-02-27 04:11:41 +01:00
Jason A. Donenfeld 366cbd11a4 tun: use netpoll instead of rwcancel 
The new sysconn function of Go 1.12 makes this possible:

package main

import "log"
import "os"
import "unsafe"
import "time"
import "syscall"
import "sync"
import "golang.org/x/sys/unix"

func main() {
	fd, err := os.OpenFile("/dev/net/tun", os.O_RDWR, 0)
	if err != nil {
		log.Fatal(err)
	}

	var ifr [unix.IFNAMSIZ + 64]byte
	copy(ifr[:], []byte("cheese"))
	*(*uint16)(unsafe.Pointer(&ifr[unix.IFNAMSIZ])) = unix.IFF_TUN

	var errno syscall.Errno
	s, _ := fd.SyscallConn()
	s.Control(func(fd uintptr) {
		_, _, errno = unix.Syscall(
			unix.SYS_IOCTL,
			fd,
			uintptr(unix.TUNSETIFF),
			uintptr(unsafe.Pointer(&ifr[0])),
		)
	})
	if errno != 0 {
		log.Fatal(errno)
	}

	b := [4]byte{}
	wait := sync.WaitGroup{}
	wait.Add(1)
	go func() {
		_, err := fd.Read(b[:])
		log.Print("Read errored: ", err)
		wait.Done()
	}()
	time.Sleep(time.Second)
	log.Print("Closing")
	err = fd.Close()
	if err != nil {
		log.Print("Close errored: " , err)
	}
	wait.Wait()
	log.Print("Exiting")
}
 2019-02-27 01:52:55 +01:00
Jason A. Donenfeld ab0f442daf tun: use sysconn instead of .Fd with Go 1.12 2019-02-27 01:34:11 +01:00
Simon Rozman d002eff155 wintun: Read/write packet size from/to exchange buffer directly 
Driver <-> user-space communication is local and using native endian.

Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-22 16:16:14 +01:00
Simon Rozman e06a8f8f9f wintun: Make two-step slicing a one step 
Stop relying to Go compiler optimizations and calculate the end offset
directly.

Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-22 16:11:33 +01:00
Simon Rozman ac4944a708 wintun: Write exchange buffer increased back to 1MiB 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-20 20:13:33 +01:00
Simon Rozman 2491f9d454 wintun: Migrate from unsafe buffer handling to encoding/binary 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-20 20:10:24 +01:00
Simon Rozman 8091c6474a wintun: Adopt new packet data alignment 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-20 19:56:10 +01:00
Simon Rozman 040da43889 wintun: Cleanup 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-02-20 18:38:18 +01:00