linux-kernel - Re: [PATCH] tools lib traceevent: Add support for IP address formats

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Date:	Thu, 18 Dec 2014 14:04:59 +0900
From:	Namhyung Kim <namhyung@...nel.org>
To:	David Ahern <dsahern@...il.com>
Cc:	Arnaldo Carvalho de Melo <acme@...nel.org>,
	linux-kernel@...r.kernel.org, Jiri Olsa <jolsa@...nel.org>,
	Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [PATCH] tools lib traceevent: Add support for IP address formats

On Wed, Dec 17, 2014 at 09:32:27PM -0700, David Ahern wrote:
> On 12/17/14 9:26 PM, Namhyung Kim wrote:
> >
> >It'd be better if we do it like below..
> >
> >	char i = *ptr++;
> >
> >Why not passing ptr + 1 to print_ip_arg()?
> >
> 
> That parsing loop is a bit weird - and deep. And I only wanted to consume
> 'pi' and 'pI' with parse_ip_arg if and only if the next letters are '4', '6'
> and 'S'.

Yeah, I know - but I still think you can pass ptr + 1 (but not update
ptr) since everytime you only access to ptr + 1 unless I missed it.
Consuming ptr depends on the return value so it's irrelevant whether
you pass ptr or (ptr + 1) IMHO.

Thanks,
Namhyung
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