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eqmcc / lvs-dpdk

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lvs-dpdk

This project has ported LVS FULLNAT/DR/NAT and SNAT-GATEWAY to OpenFastPath(base on odp-dpdk).

NAT is only available on single core while FULLNAT,DR and SNAT-GATEWAY support multi-cores, because in lvs-dpdk each core has one local session table and depend on flow director.

LVS-FULLNAT origin source code is at https://github.com/alibaba/LVS

LVS-SNAT gateway origin source code is at https://github.com/jlijian3/lvs-snat

I had forked OpenFastPath project and added support for flow director and ofp_vs example, see https://github.com/lvsgate/ofp.git

I had forked odp-dpdk project and added support for flow director, see https://github.com/lvsgate/odp-dpdk.git

Please note that this project is Experimental, it only had limited testing and never run in production environment.

Prerequisites

  • Intel x86 CPU
  • NIC which support flow director, if you want to run on multi-cores
  • lvs-dpdk has been compiled and tested on Centos 7.2 with 3.10 kernel
  • 5G memory at least

Build steps

1. Fetch and compile DPDK

git clone git://dpdk.org/dpdk ./<dpdk-dir>
cd <dpdk-dir>
git checkout -b 17.02 tags/v17.02
make config T=x86_64-native-linuxapp-gcc O=x86_64-native-linuxapp-gcc
cd <dpdk-dir>/x86_64-native-linuxapp-gcc
sed -ri 's,(CONFIG_RTE_LIBRTE_PMD_PCAP=).*,\1y,' .config
sed -ri 's,(CONFIG_RTE_LIBRTE_PMD_OPENSSL=).*,\1y,' .config
cd ..
#SHARED library
	make install T=x86_64-native-linuxapp-gcc EXTRA_CFLAGS="-fPIC"
#STATIC library
	make install T=x86_64-native-linuxapp-gcc

#Add env value
export RTE_SDK=<dpdk-dir>
export RTE_TARGET=x86_64-native-linuxapp-gcc

2. Fetch and compile odp-dpdk

git clone  https://github.com/lvsgate/odp-dpdk.git <odp-dir>
cd <odp-dir>
./bootstrap
#SHARED library
./configure --enable-shared --with-platform=linux-dpdk --enable-helper-linux --with-sdk-install-path=<dpdk-dir>/x86_64-native-linuxapp-gcc --prefix=<INSTALL ODP-DPDK TO THIS DIR>
#STATIC library
./configure --disable-shared ......

make
make install

3. Fetch and compile ofp

yum install libnl3 libnl3-cli libnl3-devel
git clone https://github.com/lvsgate/ofp.git <ofp-dir>
cd <ofp-dir>
./bootstrap
./configure --with-odp-lib=odp-dpdk --with-odp=<ODP-DPDK INSTALLATION DIR> --enable-shared=no --enable-sp=yes --disable-mtrie CPPFLAGS=-I<ODP-DPDK INSTALLATION DIR>/include/odp/arch/x86_64-linux/
make

4. Fetch and compiled lvs-dpdk tools

git clone https://github.com/lvsgate/lvs-dpdk.git
cd lvs-dpdk/tools/keepalived
./configure
make
make install
cd lvs-dpdk/tools/ipvsadm
make
make install

5. Prepare DPDK for running lvs-dpdk

echo 2048 > /sys/devices/system/node/node0/hugepages/hugepages-2048kB/nr_hugepages
mkdir /mnt/huge
mount -t hugetlbfs nodev /mnt/huge
modprobe uio
insmod <dpdk-dir>/x86_64-native-linuxapp-gcc/kmod/igb_uio.ko
cd <dpdk-dir>
./usertools/dpdk-devbind.py --status
./usertools/dpdk-devbind.py --bind=igb_uio <pci-id-1>
./usertools/dpdk-devbind.py --bind=igb_uio <pci-id-2>

6. Run lvs-dpdk

modprobe ip_vs  #add this line to /etc/rc.local, because ipvsadm and keepalived depend on it.
cd <ofp-dir>/examples/ofp_vs
./ofp_vs -i 0,1 -c 2 -p 1 -f ofp.conf # -i <port1>,<port2>  
                                 # -c <worker core count> 
                                 # -o <required for snat-gw, outer port to wan, snat-gw fdir rule will be add to this port>
                                 # -p <required for fullnat, inner port to lan, fullnat fdir rule  will be add to this port>
                                 # -f <config file include default command which you can change in ofp cli>
#If worker core count > 0, -o is required for snat-gw, -p is required for fullnat.

7. Connect to ofp cli or edit ofp.conf to configure network

telnet localhost 2345
type in "?" or "help"
>>> ?
# fp0 equal to port number 0 in dpdk
>>> ifconfig fp0 <ip_addr>/<net_mask> 
>>> ifconfig fp1 <ip_addr>/<net_mask> 
#default gw don't work if enable mtries routing, may be ofp's bug.
>>> route add 0.0.0.0/0 gw <next hop> dev fp0
>>> route add <ip_addr>/<net_mask> gw <next hop> dev fp1

9. Connect to ofp or edit ofp.conf to configure SNAT-GATEWAY

telnet localhost 2345
>>> snat enable
>>> snat add from 10.1.0.0/16 to 0.0.0.0/0 out_dev fp0 source 192.168.50.253 - 192.168.50.253 algo sd
>>> snat add from 10.1.0.10/32 to 0.0.0.0/0 out_dev fp0 source 192.168.50.100 - 192.168.50.103 algo sdfn
>>> snat del from 10.1.0.10/32 to 0.0.0.0/0 out_dev fp0
>>> snat show

10. Use ipvsadm and keepalived to configure virtual server on ofp_vs

#The usage is unchanged.
#ipvsadm and keepalived will comunicate with ofp_vs process but not the kernel module.
#Create FULLNAT virtual server, local address count must be greater than worker count
ipvsadm  -A  -t <vip:vport> -s rr
ipvsadm  -a  -t <vip:vport> -r <rsip1:rsport> -b
ipvsadm  -a  -t <vip:vport> -r <rsip2:rsport> -b
ipvsadm  -P  -t <vip:vport> -z <local_addr1>
ipvsadm  -P  -t <vip:vport> -z <local_addr2>
ipvsadm  -P  -t <vip:vport> -z <local_addr3>
ipvsadm  -P  -t <vip:vport> -z <local_addr4>
ipvsadm -ln
ipvadm -G

11. Try to visit vs now

curl <vip:vport>

12. More details about ofp and odp-dpdk

http://www.openfastpath.org/
http://opendataplane.org/
https://github.com/OpenFastPath/ofp
https://github.com/lvsgate/ofp
https://github.com/lvsgate/odp-dpdk

13. Support

email: lvsgateservice@gmail.com
QQ group: 664555119

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