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

[Hal Rosenstock]

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.

-- 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
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