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Date: Tue, 12 May 2015 10:24:27 -0400
From: Doug Ledford <dledford@...hat.com>
To: Michael Wang <yun.wang@...fitbricks.com>
Cc: "ira.weiny" <ira.weiny@...el.com>,
Roland Dreier <roland@...nel.org>,
Sean Hefty <sean.hefty@...el.com>,
Hal Rosenstock <hal@....mellanox.co.il>,
linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org,
Tom Tucker <tom@...ngridcomputing.com>,
Steve Wise <swise@...ngridcomputing.com>,
Hoang-Nam Nguyen <hnguyen@...ibm.com>,
Christoph Raisch <raisch@...ibm.com>,
Mike Marciniszyn <infinipath@...el.com>,
Eli Cohen <eli@...lanox.com>,
Faisal Latif <faisal.latif@...el.com>,
Jack Morgenstein <jackm@....mellanox.co.il>,
Or Gerlitz <ogerlitz@...lanox.com>,
Haggai Eran <haggaie@...lanox.com>,
Tom Talpey <tom@...pey.com>,
Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
Devesh Sharma <Devesh.Sharma@...lex.Com>,
Liran Liss <liranl@...lanox.com>,
Dave Goodell <dgoodell@...co.com>
Subject: Re: [PATCH v8 00/23] IB/Verbs: IB Management Helpers
On Tue, 2015-05-12 at 09:57 +0200, Michael Wang wrote:
>
> On 05/12/2015 02:27 AM, Doug Ledford wrote:
> > On Mon, 2015-05-11 at 19:49 -0400, ira.weiny wrote:
> >> I have run with this series and the only issue I have found is not with this
> >> patch set directly.
> >>
> >> This patch:
> >>
> >>> IB/Verbs: Use management helper rdma_cap_ib_mad()
> >>
> >> causes an error when you actually use the port passed from the ib_umad module.
> >> I have a patch to fix that which I found while trying to build on this series
> >> for the use of a bit mask.
> >>
> >> Doug, I don't know what you would like to do for this fix. I am submitting it
> >> shortly with a new version of the core capability bit patches. If you want to
> >> just add it after this series or force Michael to respin with the fix?
> >
> > As I recall, there was a comment from Or requesting to squash some of
> > the individual patches down, but I no longer have that email in my Inbox
> > to double check. And it seemed like there was one other review comment
> > not yet addressed. Do I have that right Michael? And if so, are you
> > working on a v9?
>
> AFAIK Or was asking to merge the #15~23, and want to reserve the changelog
> meanwhile reply the cover of prev version (I'm still confused on that...),
> I've replied but get no respond yet.
>
> I can make a v9 to merge the #15~#23 if that could benefit the maintainability,
> please let me know your opinion :-)
I don't think it would make a significant difference. I've pulled the
v8 patchset out of patchworks and I'll throw a new branch with it
included up to my github repo sometime today.
> About the Bug, if it was not introduced in this series, maybe including the
> fix in next series would be better?
>
> Regards,
> Michael Wang
>
> >
> >> Frankly
> >> I vote for the former because as it stands this series does not break directly.
> >> It was only after I changed the implementation of rdma_cap_ib_mad that it
> >> broke.
> >>
> >>
> >> For the rest of the series.
> >>
> >> Reviewed-by: Ira Weiny <ira.weiny@...el.com>
> >> Tested-by: Ira Weiny <ira.weiny@...el.com>
> >> -- Limited to mlx4, qib, and OPA (with additional patches.)
> >>
> >>
> >> On Tue, May 05, 2015 at 02:50:17PM +0200, Michael Wang wrote:
> >>> Since v7:
> >>> * Thanks to Doug, Ira, Devesh for the testing :-)
> >>> * Thanks for the comments from or, Doug, Ira, Jason :-)
> >>> Please remind me if anything missed :-P
> >>> * Use rdma_cap_XX() instead of cap_XX() for readability
> >>> * Remove CC list in git log for maintainability
> >>> * Use bool as return value
> >>> * Updated github repository to v8
> >>>
> >>> 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/feature is supported by the device/port.
> >>>
> >>> Thus instead of inferring, we should have our own mechanism for IB management
> >>> capability/protocol/feature checking, several proposals below.
> >>>
> >>> This patch set will introduce query_protocol() to check management requirement
> >>> instead of inferring from transport and link layer respectively, along with
> >>> the new enum on protocol type.
> >>>
> >>> Mapping List:
> >>> node-type link-layer transport protocol
> >>> nes RNIC ETH IWARP IWARP
> >>> amso1100 RNIC ETH IWARP IWARP
> >>> cxgb3 RNIC ETH IWARP IWARP
> >>> cxgb4 RNIC ETH IWARP IWARP
> >>> usnic USNIC_UDP ETH USNIC_UDP USNIC_UDP
> >>> ocrdma IB_CA ETH IB IBOE
> >>> mlx4 IB_CA IB/ETH IB IB/IBOE
> >>> mlx5 IB_CA IB IB IB
> >>> ehca IB_CA IB IB IB
> >>> ipath IB_CA IB IB IB
> >>> mthca IB_CA IB IB IB
> >>> qib IB_CA IB IB IB
> >>>
> >>> For example:
> >>> if (transport == IB) && (link-layer == ETH)
> >>> will now become:
> >>> if (query_protocol() == IBOE)
> >>>
> >>> Thus we will be able to get rid of the respective transport and link-layer
> >>> checking, and it will help us to add new protocol/Technology (like OPA) more
> >>> easier, also with the introduced management helpers, IB management logical
> >>> will be more clear and easier for extending.
> >>>
> >>> Highlights:
> >>> The long CC list in each patches was complained consider about the
> >>> maintainability, it was suggested folks to provide their reviewed-by or
> >>> Acked-by instead, so for those who used to be on the CC list, please
> >>> provide your signature voluntarily :-)
> >>>
> >>> The 'mgmt-helpers' branch of 'git@...hub.com:ywang-pb/infiniband-wy.git'
> >>> contain this series based on the latest 'infiniband/for-next'
> >>>
> >>> Patch 1#~14# included all the logical reform, 15#~23# introduced the
> >>> management helpers.
> >>>
> >>> Doug suggested the bitmask mechanism:
> >>> https://www.mail-archive.com/linux-rdma@vger.kernel.org/msg23765.html
> >>> which could be the plan for future reforming, we prefer that to be another
> >>> series which focus on semantic and performance.
> >>>
> >>> This patch-set is somewhat 'bloated' now and it may be a good timing for
> >>> staging, I'd like to suggest we focus on improving existed helpers and push
> >>> all the further reforms into next series ;-)
> >>>
> >>> 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
> >>> https://www.mail-archive.com/linux-rdma@vger.kernel.org/msg23765.html
> >>> Jason:
> >>> https://www.mail-archive.com/linux-rdma@vger.kernel.org/msg23425.html
> >>>
> >>> Michael Wang (23):
> >>> IB/Verbs: Implement new callback query_protocol()
> >>> IB/Verbs: Implement raw management helpers
> >>> IB/Verbs: Reform IB-core mad/agent/user_mad
> >>> IB/Verbs: Reform IB-core cm
> >>> IB/Verbs: Reform IB-core sa_query
> >>> IB/Verbs: Reform IB-core multicast
> >>> IB/Verbs: Reform IB-ulp ipoib
> >>> IB/Verbs: Reform IB-ulp xprtrdma
> >>> IB/Verbs: Reform IB-core verbs
> >>> IB/Verbs: Reform cm related part in IB-core cma/ucm
> >>> IB/Verbs: Reform route related part in IB-core cma
> >>> IB/Verbs: Reform mcast related part in IB-core cma
> >>> IB/Verbs: Reform cma_acquire_dev()
> >>> IB/Verbs: Reform rest part in IB-core cma
> >>> IB/Verbs: Use management helper rdma_cap_ib_mad()
> >>> IB/Verbs: Use management helper rdma_cap_ib_smi()
> >>> IB/Verbs: Use management helper rdma_cap_ib_cm()
> >>> IB/Verbs: Use management helper rdma_cap_iw_cm()
> >>> IB/Verbs: Use management helper rdma_cap_ib_sa()
> >>> IB/Verbs: Use management helper rdma_cap_ib_mcast()
> >>> IB/Verbs: Use management helper rdma_cap_read_multi_sge()
> >>> IB/Verbs: Use management helper rdma_cap_af_ib()
> >>> IB/Verbs: Use management helper rdma_cap_eth_ah()
> >>>
> >>> drivers/infiniband/core/agent.c | 2 +-
> >>> drivers/infiniband/core/cm.c | 20 ++-
> >>> drivers/infiniband/core/cma.c | 257 +++++++++++----------------
> >>> drivers/infiniband/core/device.c | 1 +
> >>> drivers/infiniband/core/mad.c | 43 +++--
> >>> drivers/infiniband/core/multicast.c | 12 +-
> >>> drivers/infiniband/core/sa_query.c | 30 ++--
> >>> drivers/infiniband/core/ucm.c | 3 +-
> >>> drivers/infiniband/core/ucma.c | 25 +--
> >>> drivers/infiniband/core/user_mad.c | 26 ++-
> >>> drivers/infiniband/core/verbs.c | 6 +-
> >>> drivers/infiniband/hw/amso1100/c2_provider.c | 7 +
> >>> drivers/infiniband/hw/cxgb3/iwch_provider.c | 7 +
> >>> drivers/infiniband/hw/cxgb4/provider.c | 7 +
> >>> drivers/infiniband/hw/ehca/ehca_hca.c | 6 +
> >>> drivers/infiniband/hw/ehca/ehca_iverbs.h | 3 +
> >>> drivers/infiniband/hw/ehca/ehca_main.c | 1 +
> >>> drivers/infiniband/hw/ipath/ipath_verbs.c | 7 +
> >>> drivers/infiniband/hw/mlx4/main.c | 10 ++
> >>> drivers/infiniband/hw/mlx5/main.c | 7 +
> >>> drivers/infiniband/hw/mthca/mthca_provider.c | 7 +
> >>> drivers/infiniband/hw/nes/nes_verbs.c | 6 +
> >>> drivers/infiniband/hw/ocrdma/ocrdma_main.c | 1 +
> >>> drivers/infiniband/hw/ocrdma/ocrdma_verbs.c | 6 +
> >>> drivers/infiniband/hw/ocrdma/ocrdma_verbs.h | 3 +
> >>> drivers/infiniband/hw/qib/qib_verbs.c | 7 +
> >>> drivers/infiniband/hw/usnic/usnic_ib_main.c | 1 +
> >>> drivers/infiniband/hw/usnic/usnic_ib_verbs.c | 6 +
> >>> drivers/infiniband/hw/usnic/usnic_ib_verbs.h | 2 +
> >>> drivers/infiniband/ulp/ipoib/ipoib_main.c | 15 +-
> >>> include/rdma/ib_verbs.h | 167 +++++++++++++++++
> >>> net/sunrpc/xprtrdma/svc_rdma_recvfrom.c | 4 +-
> >>> net/sunrpc/xprtrdma/svc_rdma_transport.c | 45 ++---
> >>> 33 files changed, 477 insertions(+), 273 deletions(-)
> >>>
> >>> --
> >>> 2.1.0
> >>>
> >> --
> >> To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
> >> the body of a message to majordomo@...r.kernel.org
> >> More majordomo info at http://vger.kernel.org/majordomo-info.html
> >
> >
> --
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--
Doug Ledford <dledford@...hat.com>
GPG KeyID: 0E572FDD
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