| Commit message (Collapse) | Author | Age | Files | Lines |
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Should client desire to prepare packets for Wintun inside the ring
memory (e.g. to reduce memory copying), the final sending packet size is
not always known at the WintunAllocateSendPacket() time.
This commit modifies Wintun to calculate the packet size on delivery to
NDIS. The packet size is derived from IPv4/IPv6 packet header.
Signed-off-by: Simon Rozman <simon@rozman.si>
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To avoid additional packet memory allocation and copy when sending or
receiving packets, this commit introduces additional available space
before and after layer 3 IPv4 or IPv6 packet in the Wintun rings. Wintun
will ignore data in those areas.
Requested-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Simon Rozman <simon@rozman.si>
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Signed-off-by: Simon Rozman <simon@rozman.si>
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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Discourage use of kernel interface, which gives us more flexibility if
we ever want to change it.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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"Create" and "Open" natural names for these.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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This makes the API parallel:
Wintun*Allocate*SendPacket -> WintunSendPacket
WintunReceivePacket -> Wintun*Release*ReceivePacket
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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Signed-off-by: Simon Rozman <simon@rozman.si>
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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This makes our intentions a lot more clear, and in case we ever add
other version functions, makes the forward path simpler.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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Signed-off-by: Simon Rozman <simon@rozman.si>
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Spinning on the WintunReceivePacket() while it returns
ERROR_NO_MORE_ITEMS achieves the same.
Signed-off-by: Simon Rozman <simon@rozman.si>
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- Return pointer to ring buffer with packet data allowing clients to
read/write directly. This eliminates one memcpy().
- Make sending/receiving packets thread-safe.
Signed-off-by: Simon Rozman <simon@rozman.si>
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Signed-off-by: Simon Rozman <simon@rozman.si>
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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NdisMGetDeviceProperty() should always return non-NULL
FunctionalDeviceObject according to _Outptr_opt_. An explicit
FunctionalDeviceObject NULL check has been added to keep the SDV happy
and not calling our driver "defective".
Signed-off-by: Simon Rozman <simon@rozman.si>
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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This demonstrates the use of ring buffers in its simplest, purest form.
No performance optimizations were made.
Signed-off-by: Simon Rozman <simon@rozman.si>
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Reported-by: Shay Sharon <Shay.Sharon@audiocodes.com>
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Fixes: 09dc932 ("Create copies of NBLs to complete them faster")
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This avoids needless page table modifications and also lets us enforce
having writable pages.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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After confirming with Microsoft Documentation that Wintun is already
NDIS 6.83 compliant, we declare it so.
In order to build NDIS 6.83 miniport driver, WDK for Windows 10, version
1903 is required: documentation updated.
https://docs.microsoft.com/en-us/windows-hardware/drivers/network/introduction-to-ndis-6-81
https://docs.microsoft.com/en-us/windows-hardware/drivers/network/introduction-to-ndis-6-82
https://docs.microsoft.com/en-us/windows-hardware/drivers/network/introduction-to-ndis-6-83
Signed-off-by: Simon Rozman <simon@rozman.si>
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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Signed-off-by: Simon Rozman <simon@rozman.si>
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Signed-off-by: Simon Rozman <simon@rozman.si>
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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Signed-off-by: Simon Rozman <simon@rozman.si>
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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Signed-off-by: Simon Rozman <simon@rozman.si>
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This allows common version and other configuration in wintun.props.
- MSM packaging migrated to WiX MSBuild project and extended to support
digital signing
- Building supports single Platform|Configuration per run - again :(
- wintun.vcxproj cleanup
Signed-off-by: Simon Rozman <simon@rozman.si>
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