netdev - Re: [RFC PATCH] rtnetlink: Fix problem with buffer allocation

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Message-Id: <20120210.142452.2227318248629247303.davem@davemloft.net>
Date:	Fri, 10 Feb 2012 14:24:52 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	gregory.v.rose@...el.com
Cc:	netdev@...r.kernel.org
Subject: Re: [RFC PATCH] rtnetlink: Fix problem with buffer allocation

From: "Rose, Gregory V" <gregory.v.rose@...el.com>
Date: Fri, 10 Feb 2012 19:07:15 +0000

> OK, sounds good.  How about I also add a field to indicate the
> application buffer size?

How can this help, we already have it.  It's the length field to
the recvmsg() call.

Also, either the user provided a large enough buffer or he didn't.  If
he didn't we return an error to the recvmsg() call, and the user can
increase the buffer size and try again.

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