netdev - Re: [RFC] packet: handle too big packets for PACKET

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Message-Id: <0B7AA838-0FC7-4B0C-881E-17FC71748140@alum.mit.edu>
Date:	Thu, 14 Aug 2014 22:02:27 -0700
From:	Guy Harris <guy@...m.mit.edu>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Hannes Frederic Sowa <hannes@...essinduktion.org>,
	Daniel Borkmann <dborkman@...hat.com>,
	Neil Horman <nhorman@...driver.com>,
	Jesper Dangaard Brouer <brouer@...hat.com>,
	David Miller <davem@...emloft.net>,
	netdev <netdev@...r.kernel.org>
Subject: Re: [RFC] packet: handle too big packets for PACKET_V3

On Aug 14, 2014, at 7:01 PM, Eric Dumazet <eric.dumazet@...il.com> wrote:

> I believe I am going to implement 2)  (clamp the snaplen)

If you mean "a packet that's too big to fit into a single block will be cut off at the size of the block, even if the user-requested snaplen is bigger than that", I, at least, have no problem whatsoever with that from libpcap's point of view.  We, the libpcap developers, could just boost the maximum snaplen if necessary.  (Disclaimer: I don't speak for all developers or users of libpcap.)--
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