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/* Copyright 1995, 1996, 1998, 1999, 2000, 2003, 2004, 2005
   Free Software Foundation, Inc.

This file is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.

In addition to the permissions in the GNU General Public License, the
Free Software Foundation gives you unlimited permission to link the
compiled version of this file into combinations with other programs,
and to distribute those combinations without any restriction coming
from the use of this file.  (The General Public License restrictions
do apply in other respects; for example, they cover modification of
the file, and distribution when not linked into a combine
executable.)

This file is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; see the file COPYING.  If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.  */


#include <linux/linkage.h>
#include <asm/assembler.h>

#ifdef __ARMEB__
#define al r1
#define ah r0
#else
#define al r0
#define ah r1
#endif

ENTRY(__ashldi3)
ENTRY(__aeabi_llsl)

	subs	r3, r2, #32
	rsb	ip, r2, #32
	movmi	ah, ah, lsl r2
	movpl	ah, al, lsl r3
 ARM(	orrmi	ah, ah, al, lsr ip	)
 THUMB(	lsrmi	r3, al, ip		)
 THUMB(	orrmi	ah, ah, r3		)
	mov	al, al, lsl r2
	ret	lr

ENDPROC(__ashldi3)
ENDPROC(__aeabi_llsl)
>`VNF`. It implements filtering and packet matching algorithms in order to support the enhanced traffic forwarding capability of the :term:`VNF`. The component supports a flow table (exploiting hashing algorithms for fast indexing of flows) and an inspection engine for traffic classification. The implementation used for these experiments exploits the nDPI library. The packet capturing mechanism is implemented using libpcap. When the :term:`DPI` engine identifies a new flow, the flow register is updated with the appropriate information and transmitted across the Traffic Forwarding module, which then applies any required policy updates. The Traffic Forwarding moudle is responsible for routing and packet forwarding. It accepts incoming network traffic, consults the flow table for classification information for each incoming flow and then applies pre-defined policies marking e.g. :term:`ToS`/:term:`DSCP` multimedia traffic for :term:`QoS` enablement on the forwarded traffic. It is assumed that the traffic is forwarded using the default policy until it is identified and new policies are enforced. The expected response delay is considered to be negligible, as only a small number of packets are required to identify each flow. Graphical Overview ================== .. code-block:: console +----------------------------+ | | | Virtual Traffic Classifier | | | | Analysing/Forwarding | | ------------> | | ethA ethB | | | +----------------------------+ | ^ | | v | +----------------------------+ | | | Virtual Switch | | | +----------------------------+ Install ======= run the build.sh with root privileges Run === sudo ./pfbridge -a eth1 -b eth2 Development Environment ======================= Ubuntu 14.04