[ofa-general] [Bug report / partial patch] OFED 1.3 send max_sge lower than reported by ib_query_device

Jim Mott jimmott at austin.rr.com
Wed Sep 26 20:05:17 PDT 2007


IBV_QPT_RC

-----Original Message-----
From: Roland Dreier [mailto:rdreier at cisco.com] 
Sent: Wednesday, September 26, 2007 8:57 PM
To: Jim Mott
Cc: general at lists.openfabrics.org
Subject: Re: [ofa-general] [Bug report / partial patch] OFED 1.3 send max_sge lower than reported by ib_query_device

 > The same bug exists with mthca.  I saw it originally in the kernel doing RDS work, but I just put together a short user space
test.
 > 
 > ibv_query_device(MT25204) returns max_sge=30
 >   - ibv_create_qp with qp_attr.cap.max_send_sge = dev_attr.max_sge fails
 >   - ibv_create_qp with qp_attr.cap.max_send_sge = dev_attr.max_sge-1 works

Which transport type?

 - R.




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