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Author SHA1 Message Date
Simon Rozman
5e5cb74553 Limit minimum size of exchange buffer 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-28 12:08:14 +01:00
Simon Rozman
6085957d9d Check buffer for oversize after MDL size consultation 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-28 11:48:01 +01:00
Simon Rozman
69d6f003e4 Clean TunQueueProcess() 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-28 11:48:01 +01:00
Simon Rozman
745acc8b95 Tighten code analysis annotations 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-28 11:22:16 +01:00
Simon Rozman
49847b5508 Skip IRPs we fail to get MDL access from 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-28 11:12:59 +01:00
Jason A. Donenfeld
f0275285a3 Skip impossibly large NBs when removing 
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
 2019-03-28 09:11:06 +01:00
Jason A. Donenfeld
64c408a2e4 Don't discard unfitting NBLs and fix prepend ref counting 
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
 2019-03-28 08:30:37 +01:00
Simon Rozman
9294d4b498 Fix uninitialized status and remove redundant locking in TunQueueProcess 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-28 07:41:44 +01:00
Simon Rozman
5e87977cf8 Kill some more Camels 
Disclaimer: No animals were hurt in this commit.

Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-28 07:41:43 +01:00
Jason A. Donenfeld
03a45fb768 Better ctx management 
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
 2019-03-27 17:16:35 +01:00
Jason A. Donenfeld
51f9f59ea9 Further specify LUID member 2019-03-27 16:13:00 +01:00
Simon Rozman
7c6591b4f6 Update documentation 
Device name actually uses LUID index only. Not an entire LUID. IfType
in LUID is always 53 (IF_TYPE_PROP_VIRTUAL).

Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-27 15:18:37 +01:00
Simon Rozman
015999430f Simplify adapter context extraction from device extension 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-27 15:18:37 +01:00
Simon Rozman
b157105c58 Revise adapter pausing 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-27 13:47:38 +01:00
Jason A. Donenfeld
2ee3a99690 Add basic usage info 
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
 2019-03-27 11:44:15 +01:00
Simon Rozman
269007f606 Kill some more Camels 
Disclaimer: No animals were hurt in this commit.

Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-27 10:12:53 +01:00
Simon Rozman
894a7f54a1 Upgrade TunNBLRefDec() to provide IRQL hints to NDIS 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-27 09:18:47 +01:00
Jason A. Donenfeld
0dac9b2bc7 Use CSQ instead of StartIO 
This also introduces a proper queueing and refcounting system, which
should increase performance and allow for IRP cancelation.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-27 09:00:19 +01:00
Jason A. Donenfeld
ce9936089c Add description of IO_CSQ algorithms 
Remove this file when this is done.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
 2019-03-26 08:01:50 +01:00
Simon Rozman
9704a4d11f Terminate device connection on NDIS pause 
If device connection is not terminated on NDIS pause, the driver doesn't
unload when adapter is disabled. This also prevents driver updates
without reboot.

Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-22 16:52:31 -06:00
Simon Rozman
9fbc8091ab Add some basic assert checks 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-22 16:52:31 -06:00
Simon Rozman
b6f0e07c2f Unify and revise NDIS pause checks 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-22 16:52:31 -06:00
Simon Rozman
d6dfda0421 Rename ActiveNBLCount to ActiveTransactionCount 
We are not using this counter for NBL counting only.

Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-22 16:52:31 -06:00
Simon Rozman
775386173c Enable better debugging support for Debug driver builds 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-22 16:52:31 -06:00
Simon Rozman
2e35974a24 Fix ActiveNBLCount management in TunDispatchWrite() 
The ActiveNBLCount must be bumped _before_ adapter state is checked.
Otherwise, there is a window of code that may allow adapter transition
from pausing to paused state, followed by a
NdisMIndicateReceiveNetBufferLists() call.

Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-22 16:52:31 -06:00
Simon Rozman
999cfaabcc Optimize ActiveNBLCount management in TunSendNetBufferLists 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-22 16:52:31 -06:00
Simon Rozman
a9afa3a692 Fix the UAF issue with premature MDL release in IRP_MJ_WRITE 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-22 16:52:31 -06:00
Jason A. Donenfeld
03479caf9d Initial commit 
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Simon Rozman <simon@rozman.si>
 2019-03-22 16:52:31 -06:00