[ofw] Re: [ofa-general] [RFC] 3/5: IB ACM: libibacm

[Hal Rosenstock]

On Thu, Sep 17, 2009 at 5:40 PM, Ira Weiny <weiny2 at llnl.gov> wrote:

>  On Thu, 17 Sep 2009 17:41:30 -0400
> Hal Rosenstock <hal.rosenstock at gmail.com> wrote:
>
> > On Thu, Sep 17, 2009 at 4:20 PM, Ira Weiny <weiny2 at llnl.gov> wrote:
> >
> > > On Thu, 17 Sep 2009 10:35:39 -0700
> > > "Sean Hefty" <sean.hefty at intel.com> wrote:
> > >
> > >  > >> #define IB_PATH_RECORD_REVERSIBLE 0x80
> > > > >>
> > > > >> struct ib_path_record
> > > > >> {
> > > > >>    uint64_t        service_id;
> > > > >>    union ibv_gid   dgid;
> > > > >>    union ibv_gid   sgid;
> > > > >>    uint16_t        dlid;
> > > > >>    uint16_t        slid;
> > > > >>    uint32_t        flowlabel_hoplimit; /* resv-31:28 flow
> label-27:8
> > > hop
> > > > >limit-7:0*/
> > > > >>    uint8_t         tclass;
> > > > >>    uint8_t         reversible_numpath; /* reversible-7:7 num
> path-6:0
> > > */
> > > > >>    uint16_t        pkey;
> > > > >>    uint16_t        qosclass_sl;        /* qos class-15:4 sl-3:0 */
> > > > >>    uint8_t         mtu;                /* mtu selector-7:6 mtu-5:0
> */
> > > > >>    uint8_t         rate;               /* rate selector-7:6
> rate-5:0
> > > */
> > > > >>    uint8_t         packetlifetime;     /* lifetime selector-7:6
> > > > lifetime-5:0
> > > > >*/
> > > > >>    uint8_t         preference;
> > > > >>    uint8_t         reserved[6];
> > > > >> };
> > > > >
> > > > >I would prefer to use the structures already defined in
> ib_types.h...  I
> > > > >understand your not wanting to make ACM dependant on the OpenSM
> packages
> > > so is
> > > > >it time to move ib_types.h out of the OpenSM tree and somewhere more
> > > generic?
> > > > >Perhaps libibumad?  This also applies to ib_sa_mad in your 5th
> patch.
> > > > >
> > > > >OTOH, ib_types.h is a 10K line file with multiple long (>10 lines)
> > > inlined
> > > > >functions.  Perhaps it deserves it's own library?
> > > >
> > > > Defining some of these types in libibumad isn't a bad idea.
>  Although,
> > > WinOF
> > > > actually has 2 copies of ib_types.h (that differ...)  I find using
> > > ib_types.h
> > > > painful given its size; separate header files may help.
> > >
> > > Yes I was thinking multiple headers.  There seems like there is already
> > > some precedent in ib_cm_types.h (although that entire file seems to be
> > > enclosed in a #ifndef WIN32 clause?  So am I wrong on this?)
> > >
> > > In the end I would like to make ib_types.h just list the specific
> headers.
> > >
> > > Sasha, would you be willing to accept such a patch?  First move
> ib_types.h
> > > to umad
> >
> >
> > I'm not sure this is a good idea. ibutils (ibis and ibmgtsim) wants
> > ib_types.h but does not want libibumad.
>

I miswrote about ibis as it uses osm_vendor layer so it can use libibumad
but there are other vendor layers other than osm_vendor_ibumad in use.

There are other combinations where umad isn't used (even Windows is not
fully moved over still).


>
> Would a separate library be a better solution then?


Maybe but what aside from the header would be in the library ?

-- Hal


>  I would prefer that as well.
>
> Ira
>
> >
> > -- Hal
> >
> >
> >
> > > and then move the long inline functions into the lib and separate out
> the
> > > remaining header.
> > >
> > > Or would you prefer a new library?  I think there is enough code there
> but
> > > I leave it up to you.
> > >
> > > Ira
> > >
> > > >
> > > > - Sean
> > > >
> > >
> > >
> > > --
> > > Ira Weiny
> > > Math Programmer/Computer Scientist
> > > Lawrence Livermore National Lab
> > > 925-423-8008
> > > weiny2 at llnl.gov
> > > _______________________________________________
> > >  ofw mailing list
> > > ofw at lists.openfabrics.org
> > > http://*lists.openfabrics.org/cgi-bin/mailman/listinfo/ofw
> > >
> >
>
>
> --
>  Ira Weiny
> Math Programmer/Computer Scientist
> Lawrence Livermore National Lab
> 925-423-8008
> weiny2 at llnl.gov
>
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