Version vom 27. März 2024, 21:12 Uhr

Setup dev environment for Opennet Firmware

We want to have a dev environment for Opennet firmware development.

What do we need?

• 2x UGW AP (virtual x86)
• 2x User AP (virtual x86)
• 2x Clients

Network structure

see file

networks:

• internet (with NAT; also for admin access later on)
• mesh
• br-lan (for each AP)
• mgmt (for ssh/web access)

Setup virtualization infrastructure

Install kvm + quemu + virt-manager.

Create networks:

• “default”
  • virbr0
  • 192.168.122.0/24
  • NAT for Internet connection
• “network2-mesh”
  • virbr1
  • mesh
  • 192.168.100.0/24
  • Open network
• “network3-mgmt”
  • virbr2
  • additional interface on AP (for ssh/web access)
  • 192.168.101.0/24
  • Open network
• “network4-devnull”
  • virbr3
  • connect all br-lan here when br-lan is not needed
  • Open network, 192.168.110.0/24, no DHCP
• “network4-lan0XY” (011, 021)
  • virbrZ ( 4, 6)
  • br-lan for AP0XY (011, 021)
  • Open network, 192.168.1XY.0/24, no DHCP

Create OpenWrt VM

download image *-x86-generic-combined-ext4.img.gz

Name file: oni-{0123}-{DATE}-{VERSIONNR}-{STUFF}

# start networks
virsh net-list --all
virsh net-start ...

##########################################
# Dies ist UGW AP mit 0.5.8 stable
VM_ID=10    # between 10..250; 
AP_NR=2.1   # e.g. 2.50 for AP2.50
VIRBR_NR=3  # number of virbr for br-lan, e.g. virbr4
GZ_IMAGE=openwrt-0.5.8-3013-x86-generic-generic-ext4-combined.img.gz

# Dies ist User AP mit 0.5.8 stable
VM_ID=11  # between 10..250; SET ID HERE!!!
AP_NR=2.50  # e.g. AP2.50;     SET NR HERE!!!
VIRBR_NR=4
GZ_IMAGE=openwrt-0.5.8-3013-x86-generic-generic-ext4-combined.img.gz

# Dies ist Client mit vanilla OpenWrt
VM_ID=12
AP_NR=XX    #not of interest here because no olsr
VIRBR_NR=4  #will be reassigned to WAN later on
GZ_IMAGE=openwrt-23.05.2-x86-generic-generic-ext4-combined.img.gz

##########################################

#UGW unstable
VM_ID=20
AP_NR=1.238 
VIRBR_NR=3
GZ_IMAGE=openwrt-0.5.9-unstable-3054-c6ff47f6-x86-generic-generic-ext4-combined.img.gz

#User-AP unstable
VM_ID=21
AP_NR=2.51
VIRBR_NR=6
GZ_IMAGE=openwrt-0.5.9-unstable-3054-c6ff47f6-x86-generic-generic-ext4-combined.img.gz

# Dies ist Client mit vanilla OpenWrt
VM_ID=22
AP_NR=YY    #not of interest here because no olsr
VIRBR_NR=6  #will be reassigned to WAN later on
GZ_IMAGE=openwrt-23.05.2-x86-generic-generic-ext4-combined.img.gz

##########################################

VM_NAME=oni-00${VM_ID}-AP${AP_NR}-${GZ_IMAGE%-x86*}
VM_IMAGE=$VM_NAME.img

ls $GZ_IMAGE
zcat $GZ_IMAGE > $VM_IMAGE

sudo virt-install --connect "qemu:///system" -n "$VM_NAME" -r 1024 --vcpus=1 \
    --import --disk "path=$VM_IMAGE,format=raw,bus=sata,size=512" \
    --graphics vnc,keymap=de --serial pty --noautoconsole \
    --osinfo linux2020 \
    --network bridge=virbr${VIRBR_NR},model=e1000 \
    --network bridge=virbr0,model=e1000 \
    --network bridge=virbr1,model=e1000 \
    --network bridge=virbr2,model=e1000 \
    --hvm
#eth0 - LAN  - virbr${VIRBR_NR}
#eth1 - WAN  - virbr0
#eth2 - MESH - virbr1
#eth3 - MGMT - virbr2

#if you see an error: 
#  You will need to grant the 'libvirt-qemu' user search permissions for the following directories: ['/home/leo']
#then exec: setfacl -m u:libvirt-qemu:x  /home/leo 

Configure OpenWrt VM

sudo virsh console $VM_NAME
#exit from console via Ctrl+5
#Hinweis: Wenn das '=' Zeichen in der Console nicht zu schreiben ist, dann Keyboard Language mit "no dead key" installieren.

#if you want to delete VM then exec:
# sudo virsh destroy $VM_NAME
# sudo virsh undefine $VM_NAME

VMID=21   # insert VM_ID here!!!

#for all ONI Firmware (insert your publ. SSH key here)
echo "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDKfDzl26SnrS2sWq1fhkTTyEd+ASDJ6ta4CDLcBLIlR9I7SRYOhO+v1Y4agvDcQZilD+YVO7X5dlRMdnqogmbk30TGYRIZyo3TPG8vTMrjXigs8y8pcXcBPmPNOi5ZZqp7Vyqjb3w1mrtv5rKGYkd4PkMIU+WmH6WGAdMGYaLi5Zzh34mBPihT7zdheVIDhSB1+5YNhqKL0dyKss8VW+ivGfFXZd0OB078n0MW5Fx/z17YSgCMzbU6uAXPzm9jqWPgXoyX8ld4Ng+1vLdzJGSR0APHfwxWQ6z8JniTEoNIp7QRCOiAuQRS4MynicMEEiwkOgqz2Sa6lxf7bYfElg// leo@lini" > /etc/dropbear/authorized_keys

uci set network.on_eth_0.device='eth2'  #for mesh

uci set network.mgmt=interface
uci set network.mgmt.device='eth3'
uci set network.mgmt.proto='static'
uci set network.mgmt.netmask="255.255.255.0"
uci set network.mgmt.ipaddr="192.168.101.$VMID"

uci commit
/etc/init.d/network restart

#ssh root@192.168.101.${VMID}  # oder http

#for User-AP: deactivate wan(eth1)
uci set network.wan.auto='0'
uci set network.wan6.auto='0'
uci set network.wan.disabled="1"
uci set network.wan6.disabled="1"
uci commit
/etc/init.d/network restart

#for Client: free eth0(from br-lan) and assign eth0 to wan
uci delete network.@device[0].ports
uci set network.wan.device='eth0'
uci set network.wan6.device='eth0'
uci commit
/etc/init.d/network restart
uci add_list firewall.@zone[0].network='mgmt'
uci commit
/etc/init.d/firewall restart
uci set system.@system[0].hostname="192-168-101-${VMID}"
uci commit
/etc/init.d/system restart