netdev - [RFD][PATCH] Add JMEMCMP to Berkeley Packet Filters

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Date:	Thu, 10 Feb 2011 12:31:06 +0000
From:	Ian Molton <ian.molton@...labora.co.uk>
To:	netdev@...r.kernel.org
Cc:	rdunlap@...otime.net, isdn@...ux-pingi.de, paulus@...ba.org,
	arnd@...db.de, davem@...emloft.net, herbert@...dor.apana.org.au,
	ebiederm@...ssion.com, alban.crequy@...labora.co.uk
Subject: [RFD][PATCH] Add JMEMCMP to Berkeley Packet Filters


 Documentation/networking/filter.txt |    9 ++
 drivers/isdn/i4l/isdn_ppp.c         |    2 
 drivers/net/ppp_generic.c           |    2 
 include/asm-generic/socket.h        |    2 
 include/linux/filter.h              |   17 ++++-
 include/linux/ptp_classify.h        |    2 
 net/core/filter.c                   |  115 ++++++++++++++++++++++++++++++++++--
 net/core/sock.c                     |   14 ++++
 net/core/timestamping.c             |    4 -
 net/packet/af_packet.c              |    3 

This patch adds support for adding a data section to BPF. It is intended to be
used by the JMEMCMP instruction also added in this patch.

There are some issues, mostly noted int he commit message, and I'd like to
check that sk_run_filter() does not get called from a context that cannot sleep
(I dont think so).

Comments welcome!

-Ian
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