在 2022/1/11 23:16, Haakon Bugge 写道:
On 11 Jan 2022, at 15:42, Yanjun Zhu <yanjun.zhu@xxxxxxxxx> wrote:
在 2022/1/10 13:17, yangx.jy@xxxxxxxxxxx 写道:
On 2022/1/7 19:49, Yanjun Zhu wrote:
It seems that it does not mean to check the last packet. It means that
it receives a MSN response.
Hi Yanjun,
Checking the last packet is a way to indicate that responder has
completed an entire request(including multiple packets) and then
increases a msn.
Hi, Xiao
What does the msn mean?
Message Sequence Number.
Thanks, Haakon
I am reading the following from the spec.
"
C9-148: An HCA responder using Reliable Connection service shall initialize
its MSN value to zero. The responder shall increment its MSN
whenever it has successfully completed processing a new, valid request
message. The MSN shall not be incremented for duplicate requests. The
incremented MSN shall be returned in the last or only packet of an RDMA
READ or Atomic response. For RDMA READ requests, the responder
may increment its MSN after it has completed validating the request and
before it has begun transmitting any of the requested data, and may return
the incremented MSN in the AETH of the first response packet. The MSN
shall be incremented only once for any given request message.
"
It seems that the above describe how to handle MSN increment in details.
Zhu Yanjun
Thxs, Håkon
Thanks a lot.
Zhu Yanjun
Best Regards,
Xiao Yang
