On 2022/1/12 9:19, Yanjun Zhu wrote: > > 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. Hi Yanjun, Sorry for the late reply. Right, 9.7.7.1 GENERATING MSN VALUE section explains Message Sequence Number(MSN). Best Regards, Xiao Yang > > Zhu Yanjun > >> >> >> Thxs, Håkon >> >>> Thanks a lot. >>> >>> Zhu Yanjun >>> >>>> Best Regards, >>>> Xiao Yang
