linux-kernel - Re: [RFC] ib_srpt: initial .40-rc1 drivers/infiniband/ulp/srpt merge

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Message-ID: <BANLkTikOCeNcDvoCM=BOSxQaSECFhJ05Gg@mail.gmail.com>
Date:	Thu, 19 May 2011 19:29:21 +0200
From:	Bart Van Assche <bvanassche@....org>
To:	Jason Gunthorpe <jgunthorpe@...idianresearch.com>
Cc:	"Nicholas A. Bellinger" <nab@...ux-iscsi.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-scsi <linux-scsi@...r.kernel.org>,
	linux-rmda <linux-rdma@...r.kernel.org>,
	Roland Dreier <roland@...estorage.com>,
	Vu Pham <vu@...lanox.com>, David Dillow <dillowda@...l.gov>,
	James Bottomley <James.Bottomley@...senpartnership.com>
Subject: Re: [RFC] ib_srpt: initial .40-rc1 drivers/infiniband/ulp/srpt merge

On Wed, May 18, 2011 at 7:05 PM, Jason Gunthorpe
<jgunthorpe@...idianresearch.com> wrote:
> Many installations run dual rail IB with a desire
> for both ports to be active and handling traffic at once. Not sure how
> this translates to SRPT, but a good goal would be for a SRPT target to
> be available on both HCA ports and support APM between them, at the
> discretion of the client.

Regarding APM: the Linux kernel already has multipath support and
duplicate functionality is in general not welcomed. So you will have
to come up with a very good reason before APM support in ib_srp or
ib_srpt would be considered for acceptance.

Bart.
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