[rds-devel] Help with sample RDS RDMA code by Jon

[Milind Dumbare]

Hello,

Anyone actively using/developing application on RDS? Especially the zero
copy RDMA area? I need help running basic things like rds-stress.

Thanks,
-Milind


On Wed, Feb 19, 2014 at 1:40 PM, Milind Dumbare <milind at linux.com> wrote:

> Hi,
>
> I was trying to run sample example to to RDS RDMA communication. But I
> can't make it work. Following thing works great on without "--rdma" on
> rds_tcp stack. I do have infiniband and "rds_ping" is working on it.
>
> If you have any other sample code which can run RDS RDMA please give me
> the pointers.
>
> On Server:
> ./a.out --rdma -s 192.168.16.2
>
> On client
> ./a.out --rdma -s 192.168.16.2 -c 192.168.16.1
>
> And the Client says it sent the packet over RDMA but Server prints blank
> payload and then exits. While client is waiting on the recvmsg() call.
>
> This is probably because of the following code
>
> 156: if (msg.msg_controllen) {
> 157:               rc = do_rdma_read(sock, &msg, buf);
>
> Server never gets non-zero "msg.msg_controllen" and it never goes and
> runs "do_rdma_read()".
>
> Please help.
>
> Thanks,
> -Milind
>
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