netdev - Re: [patch] svcrdma: endian bug in send_write

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Message-ID: <20120112213210.GR3644@mwanda>
Date:	Fri, 13 Jan 2012 00:32:10 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	"J. Bruce Fields" <bfields@...ldses.org>
Cc:	Trond Myklebust <Trond.Myklebust@...app.com>,
	"David S. Miller" <davem@...emloft.net>, linux-nfs@...r.kernel.org,
	netdev@...r.kernel.org, kernel-janitors@...r.kernel.org,
	Tom Tucker <tom@...ngridcomputing.com>
Subject: Re: [patch] svcrdma: endian bug in send_write_chunks()

On Thu, Jan 12, 2012 at 11:21:41AM -0500, J. Bruce Fields wrote:
> On Thu, Jan 12, 2012 at 09:47:22AM +0300, Dan Carpenter wrote:
> > Sparse complains because arg_ch->rs_length is declared as network
> > endian but we're treating it as CPU endian.
> 
> This looks like it would actually change behavior on a little endian
> architecture, so how did this work before?
> 
> >From some quick grepping, I see assignments both of the form
> 
> 	...rs_length = ntohl(...)
> 
> and
> 
> 	...rs_length = htonl(...)
> 
> but only see one declaration for a field named rs_length.
> 
> So my best guess would be that the code is ugly but working as is, and
> needs cleanup by someone who knows how this field was intended to be
> used.

Gar.  Sorry for that.  I knew it changed the behavior, and I tried
to see how the original code worked, but I didn't read carefully
enough.  I'll try be more careful next time.

Thanks for catching that.

regards,
dan carpenter


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