what does a TCP_NODELAY IRP lookk like?

Can anyone tell me what a TCP_NODELAY looks like (which disables the nagle algorithm). Most specifically, AssociatedIrp.SystemBuffer points to some structure where 24 bytes down is the 1 ro 0 that disables/enables nagle algorithm. What is that structure? I just need tto be able to disable the nagle algorithm from within my driver.

see http://www.ureader.com/message/794467.aspx

wrote in message news:xxxxx@ntdev…
> Can anyone tell me what a TCP_NODELAY looks like (which disables the nagle
> algorithm). Most specifically, AssociatedIrp.SystemBuffer points to some
> structure where 24 bytes down is the 1 ro 0 that disables/enables nagle
> algorithm. What is that structure? I just need tto be able to disable the
> nagle algorithm from within my driver.
>