CODEWITHSUNDEEP
ndis
user245481
user245481

Reputation: 17

How to prepend headers to a NetBuffer in NDIS 6?

We are upgrading our NDIS 5.1 Intermediate Miniport driver to NDIS 6.

We need to prepend some header information to a packet that is goind to be sent. In 5.1 we used NdisChainBufferAtFront().

We already did the entire kitchen to traverse and clone the entire NetBufferLists structure, we are down to preparing each cloned NetBuffer.

What is the correct way to prepend (means, at front!) a 22-byte header to a packet (NetBuffer) that is going to be sent? (We would prefer a method that avoids copying original MDL data)

Upvotes: 0

Views: 290

Answers (1)

user2963521
user2963521

Reputation: 28

You can use NdisRetreatNetBufferDataStart to add bytes for header information.

read this link till remarks to know how its done. It will surely help:

http://msdn.microsoft.com/en-in/library/windows/hardware/ff564527%28v=vs.85%29.aspx

ps: you dont at all need to copy mdl

Upvotes: 0

Related Questions