Hi Jeff, Good point, thanks! We will update the draft accordingly.
One potential issue might be that UDP source port has 2-byte and QP has 3-byte. Since there are only 2^16 UDP source ports, each UD QP should choose a source port number smaller than 65535. And the total number of UD QPs should not exceed 65536. Otherwise, it will have problems. Regards David -----Original Message----- From: Jeff Tantsura <[email protected]> Sent: Saturday, 4 February 2023 21:08 To: zhouyujing (A) <[email protected]> Cc: [email protected]; [email protected]; Zhe Lou <[email protected]> Subject: Re: [sfc] New draft about In-network Computing Solution (draft-zhou-sfc-sinc) Hey, QPs are never exposed to the Eth/IP/UDP RoCEv2 network/devices, however, in most cases, to preserve ordering within QPs, QPs are mapped into 5 tuples, since the only mutable header in RoCEv2(or similar RDMA over IP/UDP protocols) is the UDP source port (destination is set to 4791), each QP between a given pair of sender and receiver gets its own UDP source port (which also allows to per QP/flow hashing in the network). Cheers, Jeff > On Oct 28, 2022, at 01:37, zhouyujing (A) > <[email protected]> wrote: > > Hi all, > > We submitted a new draft about In-Network Computing > (https://datatracker.ietf.org/doc/draft-zhou-sfc-sinc/). In this draft, we > want to discuss a mechanism "Signaling In-Network Computing operations" > (SINC) to enable in-packet operation signaling for in-network computing for > specific scenarios. > > Hope to get your review and comments. > > Many thanks! > > Best, > Yujing Zhou > > -----Original Message----- > From: [email protected] <[email protected]> > Sent: 2022年10月24日 9:56 > To: Zhangcuimin <[email protected]>; Luigi IANNONE > <[email protected]>; zhouyujing (A) <[email protected]>; > Zhangcuimin <[email protected]>; Zhe Lou <[email protected]> > Subject: New Version Notification for draft-zhou-sfc-sinc-00.txt > > > A new version of I-D, draft-zhou-sfc-sinc-00.txt has been successfully > submitted by Yujing Zhou and posted to the IETF repository. > > Name: draft-zhou-sfc-sinc > Revision: 00 > Title: Signaling In-Network Computing operations (SINC) > Document date: 2022-10-23 > Group: Individual Submission > Pages: 19 > URL: https://www.ietf.org/archive/id/draft-zhou-sfc-sinc-00.txt > Status: https://datatracker.ietf.org/doc/draft-zhou-sfc-sinc/ > Html: https://www.ietf.org/archive/id/draft-zhou-sfc-sinc-00.html > Htmlized: https://datatracker.ietf.org/doc/html/draft-zhou-sfc-sinc > > > Abstract: > This memo introduces "Signaling In-Network Computing operations" > (SINC), a mechanism to enable in-packet operation signaling for in- > network computing for specific scenarios like NetReduce, > NetDistributedLock, NetSequencer, etc. In particular, this solution > allows to flexibly communicate computation parameters to be used in > conjunction with the packets' payload, to signal to in-network SINC- > enabled devices the computing operations to be performed. > > > > > The IETF Secretariat > > > > _______________________________________________ > rtgwg mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/rtgwg _______________________________________________ rtgwg mailing list [email protected] https://www.ietf.org/mailman/listinfo/rtgwg
