NDIS Mux IM Driver : NDIS Test Fail - Should not have resent any packets

Hello,

I am developing a NDIS Mux intermediate driver for
winXP/2003 Server OS. I had use Mux Intermediate Driver
Sample code from Microsoft DDK 2003 as a base. For
send/receive packet,
I allocate new packet and copy original packet to it and
use that packet for send/receive. This
version of my driver work fine with microsoft NDIS
4.03.0044 Test with Load/Unload and packet transmission
related test.

Now for improve performance, I had implemented NDIS
Packet Stacking method for NDIS 51 and
receive/transmit packet. It works fine with ping and file
transfer. But in NDIS test It gives some error like.

FAILED: [23078] Should not have resent any packets.

May be my PtReceiveComplete Routin not call
proplerly or call many time than necessary.

May be this error come with also from other test of NDIS.
I attached log of this 2c_LoadUnlod test Log.

Can you tell me that what test error does mean ?
Also help me related to implement of Packet _stack in
receive/transmit routine so I can remove above error.


Thankyou.

Amit Dhaduk


Log of my Load/Unlod test fail :---

GetReceiveResults
- OpenId = 0x02010001

***** Per-Source-Address Packet reception data ****
Source Address : 06-0A-D1-00-45-01
Packets Received = 200 (Sum of next two
lines)
-- Receive handler = 200 (Ndis calls to
ProtocolReceive)
-- ReceivePacket handler = 0 (Ndis calls to
ProtocolReceivePacket)
Packet Receives Complete = 300 (Ndis calls to
ProtocolReceiveComplete)
Packets Resent = 100
Packet Resends Pended = 100
Packet Resends Completed = 100

Source Address : 0E-1A-D1-89-57-89
Packets Received = 100 (Sum of next two
lines)
-- Receive handler = 0 (Ndis calls to
ProtocolReceive)
-- ReceivePacket handler = 100 (Ndis calls to
ProtocolReceivePacket)
Packet Receives Complete = 0 (Ndis calls to
ProtocolReceiveComplete)

***** Aggregated Packet reception data ****
Total Packets Received = 300 (Sum of
next two lines)
-- Total Receive handler = 200 (Ndis
calls to ProtocolReceive)
-- Total ReceivePacket handler = 100 (Ndis
calls to ProtocolReceivePacket)
Total Packet Receives Complete = 300 (Ndis
calls to ProtocolReceiveComplete)
Total Packets Resent = 100
Total Packet Resends Pended = 100
Total Packet Resends Completed = 100

FAILED: [23078] Should not have resent any packets

WARNED: Received acceptable but less than expected number
of packets

 

Are you possibly not filtering out (all) loopback packets? Or maybe
you do it ok in your ProtocolReceivePacket() but not in your
ProtocolReceive() routine or vice versa?

Loopback is usually a problem because NDIS does not always filter
and/or loopback as one would expect (there are also differences
between W2K and WXP/WK3).

Carefully count all the packets that you send and receive in your
respective handlers. Count all of directed/multicast/broadcast. This
should give you a hint.

Stephan
---

 

Hello

Thanks for guide me to set NDIS_FLAG_DONT_LOOPBACK flag
in my send routine. after implemented this, I solved
my "don't send resent packet" in NDIS test.

Amit Dhaduk