netdev - Re: [RFC PATCH 00/11] IB/Verbs: IB Management Helpers

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Message-ID: <20150406202255.GA31445@phlsvsds.ph.intel.com>
Date:	Mon, 6 Apr 2015 16:22:56 -0400
From:	"ira.weiny" <ira.weiny@...el.com>
To:	Michael Wang <yun.wang@...fitbricks.com>
Cc:	Roland Dreier <roland@...nel.org>,
	Sean Hefty <sean.hefty@...el.com>,
	Hal Rosenstock <hal.rosenstock@...il.com>,
	linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-nfs@...r.kernel.org, netdev@...r.kernel.org,
	"J. Bruce Fields" <bfields@...ldses.org>,
	Trond Myklebust <trond.myklebust@...marydata.com>,
	"David S. Miller" <davem@...emloft.net>,
	Or Gerlitz <ogerlitz@...lanox.com>,
	Moni Shoua <monis@...lanox.com>,
	PJ Waskiewicz <pj.waskiewicz@...idfire.com>,
	Tatyana Nikolova <Tatyana.E.Nikolova@...el.com>,
	Yan Burman <yanb@...lanox.com>,
	Jack Morgenstein <jackm@....mellanox.co.il>,
	Bart Van Assche <bvanassche@....org>,
	Yann Droneaud <ydroneaud@...eya.com>,
	Colin Ian King <colin.king@...onical.com>,
	Majd Dibbiny <majd@...lanox.com>,
	Jiri Kosina <jkosina@...e.cz>,
	Matan Barak <matanb@...lanox.com>,
	Alex Estrin <alex.estrin@...el.com>,
	Doug Ledford <dledford@...hat.com>,
	Eric Dumazet <edumazet@...gle.com>,
	Erez Shitrit <erezsh@...lanox.com>,
	Sagi Grimberg <sagig@...lanox.com>,
	Haggai Eran <haggaie@...lanox.com>,
	Shachar Raindel <raindel@...lanox.com>,
	Mike Marciniszyn <mike.marciniszyn@...el.com>,
	Steve Wise <swise@...ngridcomputing.com>,
	Tom Tucker <tom@....us>, Chuck Lever <chuck.lever@...cle.com>
Subject: Re: [RFC PATCH 00/11] IB/Verbs: IB Management Helpers

On Fri, Mar 27, 2015 at 04:39:54PM +0100, Michael Wang wrote:
> 
> There are plenty of lengthy code to check the transport type of IB device,
> or the link layer type of it's port, but actually we are just speculating
> whether a particular management is supported by the device/port.

Michael,

There was a lot of input on this patch series which I believe indicates we
would like to move forward.  Were you working through another version of the
series with the suggested changes?

Thanks,
Ira


> 
> Thus instead of inferring, we should have our own mechanism for
> IB management capability/protocol checking, several proposals below.
> 
> This patch set is the pioneer which try to collecting all the cases where
> a management helper applicable, and put all the speculating logical together,
> in order to be easily integrated to the new querying mechanism in future.
> 
> TODO:
>     The helper in patch 10 and 11 are still to be classified, that is
>     cap_ib() and cap_eth().
> 
>     The name/description of each helper may not correct enough, those folks
>     who are familiar with these particular parts, your suggestion would be
>     invaluable ;-)
> 
> Proposals:
>     Sean:
>     https://www.mail-archive.com/linux-rdma@vger.kernel.org/msg23339.html
>     Doug:
>     https://www.mail-archive.com/linux-rdma@vger.kernel.org/msg23418.html
>     Jason:
>     https://www.mail-archive.com/linux-rdma@vger.kernel.org/msg23425.html
> 
> Michael Wang (11):
>     [PATCH 01/11] IB/Verbs: Use helpers to check transport and link layer
>     [RFC PATCH 02/11] IB/Verbs: Use management helper tech_iboe() for iboe-check
>     [RFC PATCH 03/11] IB/Verbs: Use management helper has_mad() for mad-check
>     [RFC PATCH 04/11] IB/Verbs: Use management helper cap_smi() for smi-check
>     [RFC PATCH 05/11] IB/Verbs: Use management helper has_cm() for cm-check
>     [RFC PATCH 06/11] IB/Verbs: Use management helper has_sa() and cap_sa() for sa-check
>     [RFC PATCH 07/11] IB/Verbs: Use management helper has_mcast() and cap_mcast() for mcast-check
>     [RFC PATCH 08/11] IB/Verbs: Use management helper has_iwarp() for iwarp-check
>     [RFC PATCH 09/11] IB/Verbs: Use management helper has_ipoib() and cap_ipoib() for ipoib-check
>     [RFC PATCH 10/11] IB/Verbs: Use management helper cap_ib() for ib-check
>     [RFC PATCH 11/11] IB/Verbs: Use management helper cap_eth() for eth-check
> 
> ---
>  drivers/infiniband/core/agent.c           |    6
>  drivers/infiniband/core/cm.c              |    6
>  drivers/infiniband/core/cma.c             |   79 ++++------
>  drivers/infiniband/core/mad.c             |   18 +-
>  drivers/infiniband/core/multicast.c       |   30 +---
>  drivers/infiniband/core/sa_query.c        |   42 ++---
>  drivers/infiniband/core/ucm.c             |    8 -
>  drivers/infiniband/core/user_mad.c        |    6
>  drivers/infiniband/core/verbs.c           |   14 -
>  drivers/infiniband/hw/mlx4/ah.c           |    6
>  drivers/infiniband/hw/mlx4/cq.c           |   10 -
>  drivers/infiniband/hw/mlx4/mad.c          |   36 +---
>  drivers/infiniband/hw/mlx4/main.c         |   23 +--
>  drivers/infiniband/hw/mlx4/mlx4_ib.h      |    6
>  drivers/infiniband/hw/mlx4/qp.c           |   57 ++-----
>  drivers/infiniband/hw/mlx4/sysfs.c        |   16 --
>  drivers/infiniband/ulp/ipoib/ipoib_main.c |   18 +-
>  include/rdma/ib_verbs.h                   |  218 ++++++++++++++++++++++++++++++
>  net/sunrpc/xprtrdma/svc_rdma_recvfrom.c   |    8 -
>  19 files changed, 381 insertions(+), 226 deletions(-)
> 
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