Re: [PATCH 2/8] qla2xxx: Merge notify ack functions in qla_target.c.

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On Mon, 2011-10-17 at 09:52 -0700, Roland Dreier wrote:
> On Sat, Oct 15, 2011 at 2:57 PM, Madhuranath N Iyengar
> <mni@xxxxxxxxxxxxxxxxxxxxx> wrote:
> > +       if (IS_FWI2_CAPABLE(ha))
> > +               iocb = (void *)&imm->imm.imm_ntfy24;
> > +       else
> > +               iocb = (void *)&imm->imm.imm_ntfy;
> > +
> > +       qla_tgt_send_notify_ack(vha, iocb, 0, 0, 0,
> > +               NOTIFY_ACK_SRR_FLAGS_REJECT,
> > +               NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
> > +               NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
> 
> The code would look even nicer if we could get rid of more of these
> "if (IS_FWI2_CAPABLE(ha))" tests.  And imm_ntfy24 and imm_ntfy
> point to the same memory anyway.  So maybe we could add a void *
> member to the union (raw_iocb or something?) and not have to worry
> about HBA type we're running on?
> 
>  - R.

Roland, I agree. My goal, with merging was not just to rename (and in
the process reduce code), but also eliminate some unneeded constructs
like what you talk about above, and maybe simply things a bit. However,
I got stuck in some cases, as code is a bit involved, and didn't want to
risk breaking something. 

I can replace the union with a single field in some of those structs.
We can then access the field using void *, or using the specific IOCB
pointer and eliminate the above macro in some cases.

I'll add this to my TODO list.

Nic,

For all future changes associated with cleanups, I'll submit a newer
batch of patches, on top of the earlier batch. The reason is, since
these are huge changes, rebasing them becomes a headache sometimes.
This way, others can keep reviewing and point to anything they see that
needs changes, and I can add them to my todo list, build newer patches,
and send them in my next batch.

Regards,
Madhu
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