;;
;; Copyright (c) 2010-2017 Intel Corporation
;;
;; Licensed under the Apache License, Version 2.0 (the "License");
;; you may not use this file except in compliance with the License.
;; You may obtain a copy of the License at
;;
;;     http://www.apache.org/licenses/LICENSE-2.0
;;
;; Unless required by applicable law or agreed to in writing, software
;; distributed under the License is distributed on an "AS IS" BASIS,
;; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
;; See the License for the specific language governing permissions and
;; limitations under the License.
;;

;;
; This configuration is similar to config/nop.cfg with the difference being the
; type of interfaces. The physical ports are replaced by DPDK rings. To use this
; functionality, RTE_TARGET must be set to x86_64-ivshmem-linuxapp-gcc before
; compiling DPDK (i.e. export RTE_TARGET=x86_64-ivshmem-linuxapp-gcc). Also,
; DPDK needs to be compiled with both CONFIG_RTE_BUILD_COMBINE_LIBS=y and
; CONFIG_RTE_LIBRTE_VHOST=y
; The configuration can then be used inside a VM running on top of Open vSwitch.
; The SHA-1 of the Open vSwitch version that has been tested is c78a00b112c9. To
; run the VM, Qemu needs to be patched to support ivshmem with multiple regions
; and the right command line arguments to be used to share memory. Download and
; patch Qemu 1.6.2 using the following commands:
;   git clone git://git.qemu-project.org/qemu.git
;   cd qemu
;   git checkout v1.6.2
;   wget https://01.org/sites/default/files/page/qemu-v1.6.2-ivshmem-dpdk.patch
;   patch -p1 < qemu-v1.6.2-ivshmem-dpdk.patch
;   ./configure
;   make
; After Open vSwitch has been configured with DPDK rings as ports (i.e. ports
; with type dpdkr), Qemu needs to be started with the correct command line
; arguments. Refer to Section 11.1 from the DPDK Programmer's Guide on how to
; build the Qemu command line arguments.
; This configuration uses 4 ports. This means that 8 rings (4 for TX and 4 for
; RX) will need to be shared with the VM through ivshmem.
;;

[eal options]
-n=4 ; force number of memory channels
no-output=no ; disable DPDK debug output

[port 0]
name=if0
mac=00:00:00:00:00:01
rx_ring=dpdkr0_tx
tx_ring=dpdkr0_rx
[port 1]
name=if1
mac=00:00:00:00:00:02
rx_ring=dpdkr1_tx
tx_ring=dpdkr1_rx
[port 2]
name=if2
mac=00:00:00:00:00:03
rx_ring=dpdkr2_tx
tx_ring=dpdkr2_rx
[port 3]
name=if3
mac=00:00:00:00:00:04
rx_ring=dpdkr3_tx
tx_ring=dpdkr3_rx

[defaults]
mempool size=8K

[global]
start time=5
name=NOP forwarding rings (4x)

[core 0]
mode=master

[core 1]
name=nop
task=0
mode=nop
rx port=if0
tx port=if1
drop=no

[core 2]
name=nop
task=0
mode=nop
rx port=if1
tx port=if0
drop=no

[core 3]
name=nop
task=0
mode=nop
rx port=if2
tx port=if3
drop=no

[core 4]
name=nop
task=0
mode=nop
rx port=if3
tx port=if2
drop=no