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Date:      Sat, 15 Apr 2017 00:12:33 -0700
From:      Navdeep Parhar <np@freebsd.org>
To:        rgrimes@freebsd.org
Cc:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   Re: svn commit: r316936 - head/sys/dev/cxgbe/iw_cxgbe
Message-ID:  <20170415071233.GA12250@ox>
In-Reply-To: <201704150115.v3F1FAbU009132@pdx.rh.CN85.dnsmgr.net>
References:  <201704141915.v3EJFVMX093441@repo.freebsd.org> <201704150115.v3F1FAbU009132@pdx.rh.CN85.dnsmgr.net>

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On Fri, Apr 14, 2017 at 06:15:10PM -0700, Rodney W. Grimes wrote:
> [ Charset UTF-8 unsupported, converting... ]
> > Author: np
> > Date: Fri Apr 14 19:15:31 2017
> > New Revision: 316936
> > URL: https://svnweb.freebsd.org/changeset/base/316936
> > 
> > Log:
> >   cxgbe/iw_cxgbe: hw supports 64K (not 32K) Protection Domains.
> >   
> >   MFC after:	3 days
> >   Sponsored by:	Chelsio Communications
> > 
> > Modified:
> >   head/sys/dev/cxgbe/iw_cxgbe/t4.h
> > 
> > Modified: head/sys/dev/cxgbe/iw_cxgbe/t4.h
> > ==============================================================================
> > --- head/sys/dev/cxgbe/iw_cxgbe/t4.h	Fri Apr 14 18:56:00 2017	(r316935)
> > +++ head/sys/dev/cxgbe/iw_cxgbe/t4.h	Fri Apr 14 19:15:31 2017	(r316936)
> > @@ -61,7 +61,7 @@
> >  
> >  #define T4_MAX_NUM_QP (1<<16)
> >  #define T4_MAX_NUM_CQ (1<<15)
> > -#define T4_MAX_NUM_PD (1<<15)
> > +#define T4_MAX_NUM_PD 65536
> 
> Why the change in methods of expressing powers of 2 here?
> This, imho, would better match the near by code as
> #define	T4_MAX_NUM_PD (1<<16)
> 

r316940 removed both of the 1<<foo lines above MAX_NUM_PD and all macros
in this part of the header match nearby code:

#define T4_MAX_NUM_PD 65536
#define T4_MAX_EQ_SIZE 65520
#define T4_MAX_IQ_SIZE 65520
#define T4_MAX_RQ_SIZE(n) (8192 - (n) - 1)

Regards,
Navdeep



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