netdev - Re: [rfc 13/13] [RFC 13/13] IPVS: sip persistence engine

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Message-ID: <20100806014600.GD12311@verge.net.au>
Date:	Fri, 6 Aug 2010 10:46:00 +0900
From:	Simon Horman <horms@...ge.net.au>
To:	Jan Engelhardt <jengelh@...ozas.de>
Cc:	lvs-devel@...r.kernel.org, netdev@...r.kernel.org,
	netfilter@...r.kernel.org, netfilter-devel@...r.kernel.org,
	Wensong Zhang <wensong@...ux-vs.org>,
	Julian Anastasov <ja@....bg>, Patrick McHardy <kaber@...sh.net>
Subject: Re: [rfc 13/13] [RFC 13/13] IPVS: sip persistence engine

On Thu, Aug 05, 2010 at 02:50:11PM +0200, Jan Engelhardt wrote:
> On Thursday 2010-08-05 13:48, Simon Horman wrote:
> >+
> >+static const char *ip_vs_dbg_callid(char *buf, size_t buf_len,
> >+				    const char *callid, size_t callid_len,
> >+				    int *idx)
> >+{
> >+	size_t len = min(min(callid_len, (size_t)64), buf_len - *idx - 1);
> >+	memcpy(buf + *idx, callid, len);
> >+	*(buf + *idx + len) = '\0';
> 
> Nothing particular wrong, though I just noticed that I would have 
> personally, instinctively written
> 
> 	buf[*idx+len] = '\0';
> 
> instead. Sure you have your reasons ;-)

Actually, I had a bit of trouble writing that code clearly
(though I'm not sure why, perhaps it was late in the day).
I think your suggestion looks good.

> >+	/* RFC 2543 allows lines to be terminated with CR, LF or CRLF,
> >+	 * RFC 3261 allows only CRLF, we support both. */
> >+	if (*(dptr + *matchoff + *matchlen) != '\r' &&
> >+	    *(dptr + *matchoff + *matchlen) != '\n')
> >+		return -EINVAL;
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