public inbox for linux-rdma@vger.kernel.org
 help / color / mirror / Atom feed
From: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
To: Jack Wang <xjtuwjp-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	oren-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org,
	tzahio-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org,
	Nicholas Bellinger <nab-PEzghdH756F8UrSeD/g0lQ@public.gmane.org>
Subject: Re: [PATCH RFC v2 00/10] Introduce Signature feature
Date: Thu, 31 Oct 2013 15:20:48 +0200	[thread overview]
Message-ID: <52725930.7030702@mellanox.com> (raw)
In-Reply-To: <5272535D.4090805-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>

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.
--
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

  parent reply	other threads:[~2013-10-31 13:20 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-10-31 12:24 [PATCH RFC v2 00/10] Introduce Signature feature Sagi Grimberg
     [not found] ` <1383222255-22699-1-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2013-10-31 12:24   ` [PATCH RFC v2 01/10] IB/core: Introduce protected memory regions Sagi Grimberg
     [not found]     ` <1383222255-22699-2-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2013-11-01 17:09       ` Bart Van Assche
     [not found]         ` <5273E03C.3010501-HInyCGIudOg@public.gmane.org>
2013-11-03 12:14           ` Sagi Grimberg
2013-10-31 12:24   ` [PATCH RFC v2 02/10] IB/core: Introduce Signature Verbs API Sagi Grimberg
     [not found]     ` <1383222255-22699-3-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2013-11-01 15:13       ` Bart Van Assche
     [not found]         ` <5273C4FC.4070708-HInyCGIudOg@public.gmane.org>
2013-11-03 12:15           ` Sagi Grimberg
2013-11-01 18:46       ` Bart Van Assche
     [not found]         ` <5273F6F4.3000300-HInyCGIudOg@public.gmane.org>
2013-11-03 12:15           ` Sagi Grimberg
     [not found]             ` <52763E68.2040605-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2013-11-03 14:41               ` Bart Van Assche
     [not found]                 ` <5276608D.2020605-HInyCGIudOg@public.gmane.org>
2013-11-03 16:30                   ` Sagi Grimberg
2013-11-01 22:23       ` Bart Van Assche
     [not found]         ` <527429E7.7010705-HInyCGIudOg@public.gmane.org>
2013-11-03 12:16           ` Sagi Grimberg
2013-10-31 12:24   ` [PATCH RFC v2 03/10] IB/mlx5, mlx5_core: Support for create_mr and destroy_mr Sagi Grimberg
     [not found]     ` <1383222255-22699-4-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2013-10-31 12:52       ` Jack Wang
     [not found]         ` <52725299.7020105-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2013-10-31 12:59           ` Sagi Grimberg
2013-10-31 12:24   ` [PATCH RFC v2 04/10] IB/mlx5: Initialize mlx5_ib_qp signature related Sagi Grimberg
2013-10-31 12:24   ` [PATCH RFC v2 05/10] IB/mlx5: Break wqe handling to begin & finish routines Sagi Grimberg
2013-10-31 12:24   ` [PATCH RFC v2 06/10] IB/mlx5: remove MTT access mode from umr flags helper function Sagi Grimberg
2013-10-31 12:24   ` [PATCH RFC v2 07/10] IB/mlx5: Keep mlx5 MRs in a radix tree under device Sagi Grimberg
     [not found]     ` <1383222255-22699-8-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2013-11-01 20:46       ` Bart Van Assche
     [not found]         ` <5274131C.90601-HInyCGIudOg@public.gmane.org>
2013-11-03 12:16           ` Sagi Grimberg
     [not found]             ` <52763E88.4050300-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2013-11-03 13:40               ` Or Gerlitz
2013-10-31 12:24   ` [PATCH RFC v2 08/10] IB/mlx5: Support IB_WR_REG_SIG_MR Sagi Grimberg
     [not found]     ` <1383222255-22699-9-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2013-10-31 13:01       ` Jack Wang
2013-11-01 15:05       ` Bart Van Assche
     [not found]         ` <5273C32E.2020405-HInyCGIudOg@public.gmane.org>
2013-11-03 12:16           ` Sagi Grimberg
2013-11-01 20:37       ` Bart Van Assche
     [not found]         ` <527410F3.6040704-HInyCGIudOg@public.gmane.org>
2013-11-02 19:21           ` Or Gerlitz
     [not found]             ` <CAJZOPZLnyqzzx91ohmW+exy0k8g-FX6reSBCGmh_F2tTGWWOog-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-11-02 21:59               ` Bart Van Assche
     [not found]                 ` <527575D0.9050802-HInyCGIudOg@public.gmane.org>
2013-11-03 12:20                   ` Sagi Grimberg
2013-10-31 12:24   ` [PATCH RFC v2 09/10] IB/mlx5: Collect signature error completion Sagi Grimberg
2013-10-31 12:24   ` [PATCH RFC v2 10/10] IB/mlx5: Publish support in signature feature Sagi Grimberg
2013-10-31 12:55   ` [PATCH RFC v2 00/10] Introduce Signature feature Jack Wang
     [not found]     ` <5272535D.4090805-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2013-10-31 13:20       ` Sagi Grimberg [this message]
     [not found]         ` <52725930.7030702-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2013-10-31 13:29           ` Jack Wang
2013-11-01 15:03   ` Bart Van Assche
     [not found]     ` <5273C2B6.7010901-HInyCGIudOg@public.gmane.org>
2013-11-02  1:36       ` Nicholas A. Bellinger
     [not found]         ` <1383356167.4216.16.camel-XoQW25Eq2zviZyQQd+hFbcojREIfoBdhmpATvIKMPHk@public.gmane.org>
2013-11-02 21:57           ` Bart Van Assche
     [not found]             ` <52757555.6090907-HInyCGIudOg@public.gmane.org>
2013-11-04 18:41               ` Nicholas A. Bellinger
     [not found]                 ` <1383590471.4216.22.camel-XoQW25Eq2zviZyQQd+hFbcojREIfoBdhmpATvIKMPHk@public.gmane.org>
2013-11-05  9:13                   ` Sagi Grimberg
     [not found]                     ` <5278B6B2.1010006-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2013-11-05 18:30                       ` Nicholas A. Bellinger
2013-11-01 22:06   ` Bart Van Assche
     [not found]     ` <527425DA.7040609-HInyCGIudOg@public.gmane.org>
2013-11-03 12:13       ` Sagi Grimberg
2013-11-03 12:14       ` Sagi Grimberg

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=52725930.7030702@mellanox.com \
    --to=sagig-vpraknaxozvwk0htik3j/w@public.gmane.org \
    --cc=linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
    --cc=nab-PEzghdH756F8UrSeD/g0lQ@public.gmane.org \
    --cc=oren-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org \
    --cc=tzahio-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org \
    --cc=xjtuwjp-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox