Repository : ssh://git@open-mesh.org/doc

On branches: backup-redmine/2019-09-14,master

commit 17172d212f1aaa46a3635429234d95be235be48d Author: Sven Eckelmann sven@narfation.org Date: Sun Jul 7 17:31:45 2019 +0000

doc: open-mesh/Emulation_Debug: update to debian buster and fix missing sysfs+proc

17172d212f1aaa46a3635429234d95be235be48d open-mesh/Emulation_Debug.textile | 106 ++++++++++++++++++++++++++++++++++---- open-mesh/fstab | 2 - open-mesh/hub.sh | 17 ------ open-mesh/rc.local | 28 ---------- open-mesh/run.sh | 14 ----- 5 files changed, 96 insertions(+), 71 deletions(-)

diff --git a/open-mesh/Emulation_Debug.textile b/open-mesh/Emulation_Debug.textile index 14274d6..cf87dc3 100644 --- a/open-mesh/Emulation_Debug.textile +++ b/open-mesh/Emulation_Debug.textile @@ -2,16 +2,14 @@ h1. Emulation Debug

h2. Create an Image

-Download the fstab and rc.local file attached to this wiki page into your directory before getting started. - <pre> qemu-img create debian.img 8G sudo mkfs.ext4 -O '^has_journal' -F debian.img sudo mkdir debian sudo mount -o loop debian.img debian -sudo debootstrap stretch debian +sudo debootstrap buster debian sudo chroot debian apt update -sudo chroot debian apt install build-essential vim openssh-server less \ +sudo chroot debian apt install --no-install-recommends build-essential vim openssh-server less \ pkg-config libnl-3-dev libnl-genl-3-dev libcap-dev tcpdump \ trace-cmd flex bison libelf-dev libdw-dev binutils-dev libunwind-dev libssl-dev libslang2-dev liblzma-dev

@@ -19,13 +17,24 @@ sudo mkdir debian/root/.ssh/ ssh-add -L | sudo tee debian/root/.ssh/authorized_keys

sudo mkdir debian/host -sudo mkdir debian/host sudo sh -c 'cat > debian/etc/fstab << EOF host /host 9p trans=virtio,version=9p2000.L 0 0 none /sys/kernel/debug debugfs default 0 0 EOF'

-sudo cp rc.local debian/etc/rc.local +sudo sh -c 'cat > debian/etc/rc.local << "EOF" +#!/bin/sh -e + +MAC_PART="$(ip link show enp0s3 | awk "/ether/ {print $2}"| sed -e "s/.*://" -e "s/[\n\ ].*//"|awk "{print ("0x"$1)*1 }")" +IP_PART="$(echo $MAC_PART|awk "{ print $1+50 }")" +NODE_NR="$(echo $MAC_PART|awk "{ printf("%02d", $1) }")" +ip addr add 192.168.2.${IP_PART}/24 dev enp0s3 +ip link set up dev enp0s3 +hostname "node"$NODE_NR +ip link set up dev lo +[ ! -x /host/test-init.sh ] || /host/test-init.sh +exit 0 +EOF' sudo chmod a+x debian/etc/rc.local

sudo sed -i 's/^root:[^:]*:/root::/' debian/etc/shadow @@ -43,7 +52,7 @@ sudo sed -i 's/^root:[^:]*:/root::/' debian/etc/shadow #ExecStart=-/sbin/agetty --autologin root -s %I 115200,38400,9600 vt102 #EOF'

-sudo sh -c 'echo '''PATH="$PATH":/host/batctl/''' >> debian/etc/profile' +sudo sh -c 'echo '''PATH="/host/batctl/:$PATH"''' >> debian/etc/profile' sudo rm debian/var/cache/apt/archives/*.deb sudo rm debian/var/lib/apt/lists/* sudo e4defrag -v debian/ @@ -72,7 +81,7 @@ cat >> .config << EOF # small configuration CONFIG_SMP=y CONFIG_EMBEDDED=n -CONFIG_EXPERT=y +CONFIG_EXPERT=n CONFIG_MODULES=y CONFIG_MODULE_UNLOAD=y CONFIG_MODVERSIONS=y @@ -166,8 +175,6 @@ CONFIG_CONFIG_X86_ACPI_CPUFREQ=y CONFIG_CPU_FREQ_GOV_ONDEMAND=y CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y CONFIG_CFG80211=y -CONFIG_CFG80211_CERTIFICATION_ONUS=y -# CONFIG_CFG80211_REQUIRE_SIGNED_REGDB is not set CONFIG_PARAVIRT_SPINLOCKS=y CONFIG_DUMMY=y CONFIG_PACKET=y @@ -248,8 +255,16 @@ CONFIG_UBSAN_SANITIZE_ALL=y CONFIG_UBSAN=y CONFIG_UBSAN_NULL=y EOF +make olddefconfig

+cat >> .config << EOF +# allow to use unsigned regdb with hwsim +CONFIG_EXPERT=y +CONFIG_CFG80211_CERTIFICATION_ONUS=y +# CONFIG_CFG80211_REQUIRE_SIGNED_REGDB is not set +EOF make olddefconfig + make all -j$(nproc || echo 1) </pre>

@@ -258,9 +273,80 @@ h2. Start of the simple environment The two node environment must be started inside a screen session. The hub (bridge with eth0 + 2 tap devices) has to be started first to have a simple network. A more complex network setup can be on the page [[Emulation]]

The @ETH@ in hub.sh has to be changed to the real interface which provides internet-connectivity + +<pre> +cat > hub.sh << "EOF" +#! /bin/sh +USER="$(whoami)" +BRIDGE=br0 +ETH=enp8s0 + +sudo ip link add "${BRIDGE}" type bridge +for i in `seq 1 5`; do + sudo ip tuntap add dev tap$i mode tap user "$USER" + sudo ip link set tap$i up + sudo ip link set tap$i master "${BRIDGE}" +done + +sudo ip link set "${BRIDGE}" up + +sudo ip addr flush dev "${ETH}" +sudo ip link set "${ETH}" master "${BRIDGE}" +sudo dhclient "${BRIDGE}" +EOF + +chmod +x hub.sh +</pre> + The @SHARED_PATH@ in run.sh has to be changed to a valid path which is used to share the precompiled batman-adv.ko and other tools

<pre> +cat > run.sh << "EOF" +#! /bin/sh + +SHARED_PATH=/home/sven/tmp/qemu-batman/ + +for i in `seq 1 5`; do + qemu-img create -b debian.img -f qcow2 root.cow$i + normalized_id=`echo "$i"|awk '{ printf "%02d\n",$1 }'` + screen qemu-system-x86_64 -enable-kvm -kernel linux-next/arch/x86/boot/bzImage -append "root=/dev/vda rw console=ttyS0" \ + -smp 2 -m 512 -drive file=root.cow$i,if=virtio \ + -netdev type=tap,id=net0,ifname=tap$i,script=no -device virtio-net-pci,mac=02:ba:de:af:fe:`echo $i|awk '{ printf "%02X", $1 }'`,netdev=net0 \ + -virtfs local,path="${SHARED_PATH}",security_model=none,mount_tag=host \ + -device virtio-rng-pci -nographic + sleep 1 +done +EOF + +chmod +x run.sh +</pre> + +The test-init.sh script can be used to automatically initialize the testsetup during boot: + +<pre> +cat > test-init.sh << "EOF" +#! /bin/sh + +set -e +export PATH="/host/batctl/:$PATH" + +rmmod batman-adv || true +insmod /host/batman-adv/net/batman-adv/batman-adv.ko +batctl routing_algo BATMAN_IV +/host/batctl/batctl if add dummy0 +/host/batctl/batctl it 5000 +/host/batctl/batctl if add enp0s3 +ip link set up dev enp0s3 +ip link set up dev bat0 +EOF + +chmod +x test-init.sh +</pre> + + +Everything can then be started up inside a screen session + +<pre> screen ./hub.sh ./run.sh diff --git a/open-mesh/fstab b/open-mesh/fstab deleted file mode 100644 index c9e7c85..0000000 --- a/open-mesh/fstab +++ /dev/null @@ -1,2 +0,0 @@ -host /host 9p trans=virtio,version=9p2000.L 0 0 -none /sys/kernel/debug debugfs default 0 0 diff --git a/open-mesh/hub.sh b/open-mesh/hub.sh deleted file mode 100644 index 3e44e95..0000000 --- a/open-mesh/hub.sh +++ /dev/null @@ -1,17 +0,0 @@ -#! /bin/sh -USER="$(whoami)" -BRIDGE=br0 -ETH=eth0 - -sudo ip link add "${BRIDGE}" type bridge -for i in `seq 1 2`; do - sudo ip tuntap add dev tap$i mode tap user "$USER" - sudo ip link set tap$i up - sudo ip link set tap$i master "${BRIDGE}" -done - -sudo ip link set "${BRIDGE}" up - -sudo ip addr flush dev "${ETH}" -sudo ip link set "${ETH}" master "${BRIDGE}" -sudo dhclient "${BRIDGE}" diff --git a/open-mesh/rc.local b/open-mesh/rc.local deleted file mode 100644 index bcc80a2..0000000 --- a/open-mesh/rc.local +++ /dev/null @@ -1,28 +0,0 @@ -#!/bin/sh -e -# -# rc.local -# -# This script is executed at the end of each multiuser runlevel. -# Make sure that the script will "exit 0" on success or any other -# value on error. -# -# In order to enable or disable this script just change the execution -# bits. -# -# By default this script does nothing. - -MAC_PART="$(ip link show enp0s3 | awk '/ether/ {print $2}'| sed -e 's/.*://' -e 's/[\n\ ].*//'|awk '{print ("0x"$1)*1 }')" -IP_PART="$(echo $MAC_PART|awk '{ print $1+50 }')" -NODE_NR="$(echo $MAC_PART|awk '{ printf("%02d", $1) }')" -ip addr add 192.168.2.${IP_PART}/24 dev enp0s3 -ip link set up dev enp0s3 -hostname "node"$NODE_NR -ip link set up dev lo - -insmod /host/batman-adv/build/net/batman-adv/batman-adv.ko -/host/batctl/batctl if add enp0s3 -ip addr add 192.168.5.${IP_PART}/24 dev bat0 -ip link set up dev bat0 -#/host/batctl/batctl it 20000 - -exit 0 diff --git a/open-mesh/run.sh b/open-mesh/run.sh deleted file mode 100644 index 4306bda..0000000 --- a/open-mesh/run.sh +++ /dev/null @@ -1,14 +0,0 @@ -#! /bin/sh - -SHARED_PATH=/home/sven/tmp/qemu-batman/ - -for i in `seq 1 5`; do - qemu-img create -b debian.img -f qed root.cow$i - normalized_id=`echo "$i"|awk '{ printf "%02d\n",$1 }'` - screen qemu-system-x86_64 -enable-kvm -kernel bzImage -append "root=/dev/vda rw console=ttyS0" \ - -smp 2 -m 512 -drive file=root.cow$i,if=virtio \ - -netdev type=tap,id=net0,ifname=tap$i,script=no -device virtio-net-pci,mac=02:ba:de:af:fe:`echo $i|awk '{ printf "%02X", $1 }'`,netdev=net0 \ - -virtfs local,path="${SHARED_PATH}",security_model=none,mount_tag=host \ - -nographic - sleep 1 -done