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From: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
To: "Weiny, Ira" <ira.weiny-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Cc: "Wan, Kaike" <kaike.wan-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
	"linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
	<linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	"Fleck,
	John" <john.fleck-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Subject: Re: [PATCH v5 1/1] ibacm: Add support for pathrecord query through netlink
Date: Thu, 11 Jun 2015 14:22:00 -0600	[thread overview]
Message-ID: <20150611202200.GA25813@obsidianresearch.com> (raw)
In-Reply-To: <2807E5FD2F6FDA4886F6618EAC48510E1109BDCF-8k97q/ur5Z2krb+BlOpmy7fspsVTdybXVpNB7YpNyf8@public.gmane.org>

On Thu, Jun 11, 2015 at 08:16:41PM +0000, Weiny, Ira wrote:
> > For instance if we add SL it would be mandatory, but policy information like
> > requesting net_device would be optional.
> 
> Why would SL be mandatory?

If the kernel asks for a specific SL then user space must respect that
and return a path with that exact SL.

If userspace does not know how to do that, then it must not answer the
query. It cannot ignore the SL requirement and return a random SL.

Hypothetically, assuming we add SL..

Jason
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  parent reply	other threads:[~2015-06-11 20:22 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-06-11 17:04 [PATCH v5 1/1] ibacm: Add support for pathrecord query through netlink kaike.wan-ral2JQCrhuEAvxtiuMwx3w
     [not found] ` <1434042265-5066-1-git-send-email-kaike.wan-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2015-06-11 17:59   ` Jason Gunthorpe
     [not found]     ` <20150611175940.GD20142-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-06-11 18:31       ` Wan, Kaike
     [not found]         ` <3F128C9216C9B84BB6ED23EF16290AFB0CABD2BD-8k97q/ur5Z2krb+BlOpmy7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
2015-06-11 18:46           ` Jason Gunthorpe
     [not found]             ` <20150611184641.GB20779-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-06-11 18:52               ` Wan, Kaike
     [not found]                 ` <3F128C9216C9B84BB6ED23EF16290AFB0CABD316-8k97q/ur5Z2krb+BlOpmy7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
2015-06-11 19:27                   ` Jason Gunthorpe
     [not found]                     ` <20150611192719.GA24457-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-06-11 19:35                       ` Wan, Kaike
     [not found]                         ` <3F128C9216C9B84BB6ED23EF16290AFB0CABD362-8k97q/ur5Z2krb+BlOpmy7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
2015-06-11 19:54                           ` Jason Gunthorpe
2015-06-11 20:16       ` Weiny, Ira
     [not found]         ` <2807E5FD2F6FDA4886F6618EAC48510E1109BDCF-8k97q/ur5Z2krb+BlOpmy7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
2015-06-11 20:22           ` Jason Gunthorpe [this message]
     [not found]             ` <20150611202200.GA25813-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-06-11 20:55               ` Weiny, Ira

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