I tried using openib userland libraries with mainline 2.6.16  kernel but ran into
a strange problem. A userland application which uses CM and VERBS library which works
fine with earlier releases stopped working with no error (in API's). When I put
the analyser on, I see the CM connect sequence is fine but when ibv_post_send (RC send)
the DLID field in the LRH header is zero causing the packet to be dropped.

I tried mainline 2.6.16 kernel (with IB stack from kernel tree)

openib userland libraies
[EMAIL PROTECTED] 216GEN2]# svn info
Path: .
URL: https://openib.org/svn/gen2/trunk
Repository UUID: 21a7a0b7-18d7-0310-8e21-e8b31bdbf5cd
Revision: 5989
Node Kind: directory
Schedule: normal
Last Changed Author: halr
Last Changed Rev: 5989
Last Changed Date: 2006-03-23 10:17:02 -0800 (Thu, 23 Mar 2006)


Any idea about the compatilibility issues ?

Thanks,
Viswa



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