Date: Tue, 14 Apr 2015 11:40:13 -0400
From: "ira.weiny" <ira.weiny@intel.com>
To: Michael Wang <yun.wang@profitbricks.com>
Cc: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>,
        Roland Dreier <roland@kernel.org>, Sean Hefty <sean.hefty@intel.com>,
        Hal Rosenstock <hal.rosenstock@gmail.com>, linux-rdma@vger.kernel.org,
        linux-kernel@vger.kernel.org, Tom Tucker <tom@opengridcomputing.com>,
        Steve Wise <swise@opengridcomputing.com>,
        Hoang-Nam Nguyen <hnguyen@de.ibm.com>,
        Christoph Raisch <raisch@de.ibm.com>,
        Mike Marciniszyn <infinipath@intel.com>, Eli Cohen <eli@mellanox.com>,
        Faisal Latif <faisal.latif@intel.com>,
        Jack Morgenstein <jackm@dev.mellanox.co.il>,
        Or Gerlitz <ogerlitz@mellanox.com>, Haggai Eran <haggaie@mellanox.com>,
        Tom Talpey <tom@talpey.com>, Doug Ledford <dledford@redhat.com>
Subject: Re: [PATCH v3 07/28] IB/Verbs: Reform IB-ulp ipoib
Message-ID: <20150414154012.GA13852@phlsvsds.ph.intel.com>
References: <552BB470.4090407@profitbricks.com> <552BB5AC.6050101@profitbricks.com> <20150413192701.GA19112@obsidianresearch.com> <20150413194602.GA21467@phlsvsds.ph.intel.com> <20150413200138.GC19112@obsidianresearch.com> <20150414141806.GA7354@phlsvsds.ph.intel.com> <552D2519.6000500@profitbricks.com>
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On Tue, Apr 14, 2015 at 04:32:57PM +0200, Michael Wang wrote:
> 
> 
> On 04/14/2015 04:18 PM, ira.weiny wrote:
> [snip]
> >  
> >  /**
> > - * cap_ib_cm_dev - Check if any port of device has the capability Infiniband
> > - * Communication Manager.
> > + * cap_ib_cm_any_port - Check if any port of the device has Infiniband
> > + * Communication Manager (CM) support.
> >   *
> >   * @device: Device to be checked
> >   *
> > - * Return 0 when all port of the device don't support Infiniband
> > - * Communication Manager.
> > + * Return 1 if any port of the device supports the IB CM.
> >   */
> > -static inline int cap_ib_cm_dev(struct ib_device *device)
> > +static inline int cap_ib_cm_any_port(struct ib_device *device)
> >  {
> >         int i;
> 
> I think we maybe able to get rid of this helper according to Sean's suggestion :-)
> 
> We just need to check the port 1 of HCA see if it support ib cm, seems like
> currently there is no case that port 1 support cm while others doesn't.

But that moves us in the wrong direction.  If we later support port 2 without
port 1 that code will be broken.

Ira

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