From: Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: "ira.weiny" <ira.weiny-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Cc: Jason Gunthorpe
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Tatyana Nikolova
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Or Gerlitz <ogerlitz@mellanox.c
Subject: Re: [PATCH v2 01/17] IB/Verbs: Implement new callback query_transport() for each HW
Date: Fri, 10 Apr 2015 13:49:32 -0400 [thread overview]
Message-ID: <1428688172.2980.372.camel@redhat.com> (raw)
In-Reply-To: <20150410173836.GE10675-W4f6Xiosr+yv7QzWx2u06xL4W9x8LtSr@public.gmane.org>
[-- Attachment #1: Type: text/plain, Size: 1650 bytes --]
On Fri, 2015-04-10 at 13:38 -0400, ira.weiny wrote:
> Isn't ocrdma an iWarp device?
No, it's roce. It and mlx4 roce devices currently interoperate.
> > I think if we look closely we'll find that IPoIB today has a hard
> > requirement on cap_sa being true, so lets use that?
>
> I don't think that is appropriate. You have been advocating that the checks
> be clear as to what support we need. While currently the IPoIB layer does (for
> IB and OPA) require an SA I think those checks are only appropriate when it is
> attempting an SA query.
>
> The choice to run IPoIB at all is a different matter.
Appropriately named or not, Jason's choice of words "has a hard
requirement" is correct ;-) For IPoIB, the broadcast group of the fake
Ethernet fabric is a very specific IB multicast group per the IPoIB
spec.
> >
> > In fact any ULP that unconditionally uses the SA can use that.
>
> They _can_ use that but the point of this exercise (and additional checks going
> forward) is that we don't "hide" meaning like this.
>
> IPoIB should restrict itself to running on IB link layers. Should additional
> link layers be added which IPoIB works on then we add that check.
I think your right that checking the link layer is the right thing, and
for now, there is no need to check cap_sa because the link layer check
enforces it. In the future, if there is a new link layer we want to use
this on, and it doesn't have an sa, then we have to enable sa checks and
alternate methods at that time.
--
Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
GPG KeyID: 0E572FDD
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next prev parent reply other threads:[~2015-04-10 17:49 UTC|newest]
Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-07 12:25 [PATCH v2 00/17] IB/Verbs: IB Management Helpers Michael Wang
2015-04-07 12:31 ` [PATCH v2 04/17] IB/Verbs: Use management helper cap_ib_smi() for smi-check Michael Wang
2015-04-07 12:34 ` [PATCH v2 09/17] IB/Verbs: Use helper cap_read_multi_sge() and reform svc_rdma_accept() Michael Wang
[not found] ` <5523CEE4.5060901-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>
2015-04-07 15:46 ` Tom Talpey
[not found] ` <5523FBF1.80304-CLs1Zie5N5HQT0dZR+AlfA@public.gmane.org>
2015-04-07 16:05 ` Michael Wang
2015-04-07 17:42 ` Jason Gunthorpe
2015-04-07 12:35 ` [PATCH v2 10/17] IB/Verbs: Adopt management helpers for IB helpers Michael Wang
2015-04-07 18:40 ` Hefty, Sean
[not found] ` <1828884A29C6694DAF28B7E6B8A82373A8FBE2A5-P5GAC/sN6hkd3b2yrw5b5LfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2015-04-08 8:24 ` Michael Wang
[not found] ` <5523CF0A.5090206-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>
2015-04-07 20:12 ` Jason Gunthorpe
[not found] ` <20150407201259.GA17147-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-04-07 20:16 ` Steve Wise
2015-04-08 8:28 ` Michael Wang
2015-04-09 5:36 ` ira.weiny
2015-04-07 20:18 ` Hefty, Sean
2015-04-07 12:36 ` [PATCH v2 11/17] IB/Verbs: Reform link_layer_show() and ib_uverbs_query_port() Michael Wang
[not found] ` <5523CF30.7000608-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>
2015-04-07 18:49 ` Hefty, Sean
[not found] ` <1828884A29C6694DAF28B7E6B8A82373A8FBE2FA-P5GAC/sN6hkd3b2yrw5b5LfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2015-04-07 18:56 ` Steve Wise
2015-04-08 8:29 ` Michael Wang
2015-04-07 12:36 ` [PATCH v2 12/17] IB/Verbs: Use management helper cap_ib_cm_dev() for cm-device-check Michael Wang
2015-04-07 12:38 ` [PATCH v2 14/17] IB/Verbs: Reserve legacy transport type for 'struct rdma_dev_addr' Michael Wang
2015-04-07 12:42 ` [PATCH v2 01/17] IB/Verbs: Implement new callback query_transport() for each HW Michael Wang
[not found] ` <5523D098.3020007-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>
2015-04-08 18:29 ` Doug Ledford
[not found] ` <1428517786.2980.180.camel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-04-08 18:41 ` Hefty, Sean
[not found] ` <1828884A29C6694DAF28B7E6B8A82373A8FBF0E8-P5GAC/sN6hkd3b2yrw5b5LfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2015-04-08 19:35 ` Jason Gunthorpe
2015-04-08 20:10 ` Jason Gunthorpe
2015-04-08 20:55 ` Tom Talpey
[not found] ` <20150408201015.GB28666-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-04-09 9:45 ` Michael Wang
2015-04-09 12:42 ` Michael Wang
2015-04-09 16:00 ` Jason Gunthorpe
[not found] ` <20150409160054.GB2035-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-04-10 8:19 ` Michael Wang
2015-04-09 14:34 ` Doug Ledford
2015-04-09 16:01 ` Jason Gunthorpe
2015-04-09 21:19 ` Doug Ledford
[not found] ` <1428614348.2980.287.camel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-04-09 21:36 ` Jason Gunthorpe
2015-04-10 7:46 ` Michael Wang
[not found] ` <55277FE8.50107-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>
2015-04-10 16:48 ` Doug Ledford
2015-04-10 6:16 ` ira.weiny
2015-04-10 8:25 ` Michael Wang
2015-04-10 14:56 ` ira.weiny
[not found] ` <20150410061610.GA26288-W4f6Xiosr+yv7QzWx2u06xL4W9x8LtSr@public.gmane.org>
2015-04-10 16:15 ` Jason Gunthorpe
[not found] ` <20150410161551.GA26419-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-04-10 17:38 ` ira.weiny
[not found] ` <20150410173836.GE10675-W4f6Xiosr+yv7QzWx2u06xL4W9x8LtSr@public.gmane.org>
2015-04-10 17:49 ` Doug Ledford [this message]
2015-04-10 18:11 ` ira.weiny
2015-04-10 18:04 ` Jason Gunthorpe
[not found] ` <20150410180455.GA1277-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-04-10 18:24 ` Doug Ledford
2015-04-10 19:17 ` Jason Gunthorpe
[not found] ` <20150410191723.GC1277-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-04-10 21:06 ` ira.weiny
[not found] ` <20150410210639.GB19907-W4f6Xiosr+yv7QzWx2u06xL4W9x8LtSr@public.gmane.org>
2015-04-11 0:01 ` Tom Talpey
2015-04-10 20:38 ` ira.weiny
2015-04-10 7:48 ` ira.weiny
[not found] ` <20150410074805.GA11855-W4f6Xiosr+yv7QzWx2u06xL4W9x8LtSr@public.gmane.org>
2015-04-10 17:10 ` Doug Ledford
2015-04-10 17:36 ` Jason Gunthorpe
2015-04-13 7:40 ` Michael Wang
2015-04-10 17:50 ` Tom Talpey
[not found] ` <55280D51.20402-CLs1Zie5N5HQT0dZR+AlfA@public.gmane.org>
2015-04-10 18:17 ` Doug Ledford
[not found] ` <5523CCD5.6030401-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>
2015-04-07 12:28 ` [PATCH " Michael Wang
[not found] ` <5523CD62.1070102-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>
2015-04-07 12:44 ` Michael Wang
2015-04-07 12:29 ` [PATCH v2 02/17] IB/Verbs: Implement raw management helpers Michael Wang
[not found] ` <5523CDA7.8090902-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>
2015-04-07 21:25 ` Hefty, Sean
[not found] ` <1828884A29C6694DAF28B7E6B8A82373A8FBE403-P5GAC/sN6hkd3b2yrw5b5LfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2015-04-08 8:41 ` Michael Wang
2015-04-07 12:30 ` [PATCH v2 03/17] IB/Verbs: Use management helper cap_ib_mad() for mad-check Michael Wang
[not found] ` <5523CDDE.4050209-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>
2015-04-07 17:26 ` Jason Gunthorpe
[not found] ` <20150407172612.GA15704-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-04-08 8:13 ` Michael Wang
2015-04-07 12:32 ` [PATCH v2 05/17] IB/Verbs: Use management helper cap_ib_cm() for cm-check Michael Wang
2015-04-07 12:32 ` [PATCH v2 06/17] IB/Verbs: Use management helper cap_ib_sa() for sa-check Michael Wang
2015-04-07 12:33 ` [PATCH v2 07/17] IB/Verbs: Use management helper cap_ib_mcast() for mcast-check Michael Wang
2015-04-07 12:34 ` [PATCH v2 08/17] IB/Verbs: Use management helper cap_ipoib() for ipoib-check Michael Wang
2015-04-07 12:37 ` [PATCH v2 13/17] IB/Verbs: Reform cma/ucma with management helpers Michael Wang
[not found] ` <5523CF74.8020004-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>
2015-04-07 21:11 ` Steve Wise
2015-04-07 21:36 ` Hefty, Sean
2015-04-08 9:37 ` Michael Wang
2015-04-08 17:02 ` Hefty, Sean
2015-04-07 12:38 ` [PATCH v2 15/17] IB/Verbs: Reform cma_acquire_dev() " Michael Wang
2015-04-07 12:39 ` [PATCH v2 16/17] IB/Verbs: Cleanup rdma_node_get_transport() Michael Wang
2015-04-07 12:39 ` [PATCH v2 17/17] IB/Verbs: Move rdma_port_get_link_layer() to mlx4 head file Michael Wang
2015-04-08 11:38 ` [PATCH v2 00/17] IB/Verbs: IB Management Helpers Tom Talpey
[not found] ` <5525132F.1020004-CLs1Zie5N5HQT0dZR+AlfA@public.gmane.org>
2015-04-08 12:41 ` Michael Wang
[not found] ` <552521EE.5060206-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>
2015-04-08 15:51 ` Jason Gunthorpe
[not found] ` <20150408155145.GA25178-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-04-08 16:05 ` Michael Wang
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