Re: [PATCH] CONFIG_PACKET_MMAP should depend on MMU

From: Aubrey Li
Date: Tue Apr 17 2007 - 06:36:38 EST


On 4/11/07, Robin Getz <rgetz@xxxxxxxxxxxxxxxxxxxx> wrote:
On Tue 10 Apr 2007 08:55, David Howells pondered:
> Looking at alloc_pg_vec() in af_packet.c, I will place my bets on the
> latter case. I don't know that this is a problem; it depends on how things
> work, and that I don't know offhand. If someone can give me a simple test
> program, I would be able to evaluate it better.

Hmm - the only think I have used in the past is tcpdump/libpcap from
http://public.lanl.gov/cpw/

Documentation/networking/packet_mmap.txt also seems to be a little dated, but
does have some code snippets if you wanted to make something lightweight...

Does anyone else on netdev have a small test app?

Here, in the attachment I wrote a small test app. Please correct if
there is anything wrong, and feel free to improve it.

-Aubrey

Attachment: packet-mmap.tar.gz
Description: GNU Zip compressed data