On 2022/1/15 11:38, Yanjun Zhu wrote: > > 在 2022/1/12 11:58, yangx.jy@xxxxxxxxxxx 写道: >> 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 > > Does your commit take into account of duplicate requests? Hi Yanjun, Responder will check duplicate requests by check_psn() and process them by duplicate_request(). According to the logic of duplicate_request(), responder doesn't increase msn for duplicate requests. Best Regards, Xiao Yang > > Zhu Yanjun > >> Number(MSN). >> >> Best Regards, >> Xiao Yang >>> Zhu Yanjun >>> >>>> >>>> Thxs, Håkon >>>> >>>>> Thanks a lot. >>>>> >>>>> Zhu Yanjun >>>>> >>>>>> Best Regards, >>>>>> Xiao Yang
