From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jack Wang Subject: Re: [PATCH RFC v2 00/10] Introduce Signature feature Date: Thu, 31 Oct 2013 14:29:09 +0100 Message-ID: <52725B25.9070708@gmail.com> References: <1383222255-22699-1-git-send-email-sagig@mellanox.com> <5272535D.4090805@gmail.com> <52725930.7030702@mellanox.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <52725930.7030702-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Sagi Grimberg Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, oren-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org, tzahio-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org, Nicholas Bellinger List-Id: linux-rdma@vger.kernel.org On 10/31/2013 02:20 PM, Sagi Grimberg wrote: > On 10/31/2013 2:55 PM, Jack Wang wrote: >> Hi Sagi, >> >> I wander what's the performance overhead with this DIF support? >> And is there a roadmap for support SRP/ISER and target side for DIF? >> >> Regards, >> Jack > > Well, all DIF operations are fully offloaded by the HCA so we don't expect > any performance degradation other than the obvious 8-bytes integrity > overhead. > We have yet to take benchmarks on this and we definitely plan to do so. > > Regarding our roadmap, we plan to support iSER target (LIO) and > initiator first. > Some prior support for DIF needs to be added in target core level, > then transport implementation is pretty straight-forward (iSER/SRP). > > So I aim for iSER DIF support (target+initiator) to make it into v3.14. > > Hope this helps, > > Sagi. Good to know, thanks Jack -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html