[ofa-general] ***SPAM*** rdma write to pci address

Tzahi Oved tzahio at voltaire.com
Tue Jan 6 08:34:43 PST 2009


Hi,
I'm trying to RDMA write from one server directly to a pci bar address in a
remote server.
I'm using ConnectX HCA with OFED 1.4 on a DL160 platform.
Basically I'm using the following calls:
ib_get_dma_mr() - get a general mr for physical bus memory space
dma_map_single()  - map my ioremap()ed kernel virtual address of the io
device to the HCA bus address space
Then with mr->rkey and the bus address I'm trying to rdma write from a
remote server.
The RDMA operation returns with cq.status 10 (rem op err).
Any ideas why it fails? should I take a different approach?
Many thanks,
Tzahi
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