commits September 2019

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279 discussions

[doc] backup-redmine/2019-09-14, master: doc: open-mesh/Emulation_Debug: document creation of dummy device (c47f2a6)
by postmaster＠open-mesh.org 15 Sep '19

15 Sep '19

1 0

[doc] backup-redmine/2019-09-14, master: doc: open-mesh/News-draft (b446a33)
by postmaster＠open-mesh.org 15 Sep '19

15 Sep '19

1 0

[doc] backup-redmine/2019-09-14, master: doc: open-mesh/Emulation_Debug: update to debian buster and fix missing sysfs+proc (17172d2)
by postmaster＠open-mesh.org 15 Sep '19

15 Sep '19

Repository : ssh://git@open-mesh.org/doc On branches: backup-redmine/2019-09-14,master >--------------------------------------------------------------- commit 17172d212f1aaa46a3635429234d95be235be48d Author: Sven Eckelmann <sven(a)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

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[doc] backup-redmine/2019-09-14, master: doc: open-mesh/Download (3070d2e)
by postmaster＠open-mesh.org 15 Sep '19

15 Sep '19

Repository : ssh://git@open-mesh.org/doc On branches: backup-redmine/2019-09-14,master >--------------------------------------------------------------- commit 3070d2e7f4ae6a74c3df1147746f92a6966468b4 Author: Simon Wunderlich <sw(a)simonwunderlich.de> Date: Thu Mar 28 16:19:16 2019 +0000 doc: open-mesh/Download >--------------------------------------------------------------- 3070d2e7f4ae6a74c3df1147746f92a6966468b4 open-mesh/Download.textile | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/open-mesh/Download.textile b/open-mesh/Download.textile index 3b43e7d..4f6e417 100644 --- a/open-mesh/Download.textile +++ b/open-mesh/Download.textile @@ -7,9 +7,9 @@ Please use the maint branch for your public infrastructure unless you know exact h2. Download Released Source Code -* The latest version of [[batman-adv:Wiki|batman-adv]] is "batman-adv-2019.0.tar.gz":https://downloads.open-mesh.org/batman/stable/sources/batman-adv/batman-adv-2019.0.tar.gz "md5":https://downloads.open-mesh.org/batman/stable/sources/batman-adv/batman-adv-2019.0.tar.gz.md5 "sha1":https://downloads.open-mesh.org/batman/stable/sources/batman-adv/batman-adv-2019.0.tar.gz.sha1 "asc":https://downloads.open-mesh.org/batman/stable/sources/batman-adv/batman-adv-2019.0.tar.gz.asc -* The latest version of batctl (management and control tool for batman-adv) is "batctl-2019.0.tar.gz":https://downloads.open-mesh.org/batman/stable/sources/batctl/batctl-2019.0.tar.gz "md5":https://downloads.open-mesh.org/batman/stable/sources/batctl/batctl-2019.0.tar.gz.md5 "sha1":https://downloads.open-mesh.org/batman/stable/sources/batctl/batctl-2019.0.tar.gz.sha1 "asc":https://downloads.open-mesh.org/batman/stable/sources/batctl/batctl-2019.0.tar.gz.asc -* The latest version of alfred (Almighty Lightweight Fact Remote Exchange Daemon) is "alfred-2019.0.tar.gz":https://downloads.open-mesh.org/batman/stable/sources/alfred/alfred-2019.0.tar.gz "md5":https://downloads.open-mesh.org/batman/stable/sources/alfred/alfred-2019.0.tar.gz.md5 "sha1":https://downloads.open-mesh.org/batman/stable/sources/alfred/alfred-2019.0.tar.gz.sha1 "asc":https://downloads.open-mesh.org/batman/stable/sources/alfred/alfred-2019.0.tar.gz.asc +* The latest version of [[batman-adv:Wiki|batman-adv]] is "batman-adv-2019.1.tar.gz":https://downloads.open-mesh.org/batman/stable/sources/batman-adv/batman-adv-2019.1.tar.gz "md5":https://downloads.open-mesh.org/batman/stable/sources/batman-adv/batman-adv-2019.1.tar.gz.md5 "sha1":https://downloads.open-mesh.org/batman/stable/sources/batman-adv/batman-adv-2019.1.tar.gz.sha1 "asc":https://downloads.open-mesh.org/batman/stable/sources/batman-adv/batman-adv-2019.1.tar.gz.asc +* The latest version of batctl (management and control tool for batman-adv) is "batctl-2019.1.tar.gz":https://downloads.open-mesh.org/batman/stable/sources/batctl/batctl-2019.1.tar.gz "md5":https://downloads.open-mesh.org/batman/stable/sources/batctl/batctl-2019.1.tar.gz.md5 "sha1":https://downloads.open-mesh.org/batman/stable/sources/batctl/batctl-2019.1.tar.gz.sha1 "asc":https://downloads.open-mesh.org/batman/stable/sources/batctl/batctl-2019.1.tar.gz.asc +* The latest version of alfred (Almighty Lightweight Fact Remote Exchange Daemon) is "alfred-2019.1.tar.gz":https://downloads.open-mesh.org/batman/stable/sources/alfred/alfred-2019.1.tar.gz "md5":https://downloads.open-mesh.org/batman/stable/sources/alfred/alfred-2019.1.tar.gz.md5 "sha1":https://downloads.open-mesh.org/batman/stable/sources/alfred/alfred-2019.1.tar.gz.sha1 "asc":https://downloads.open-mesh.org/batman/stable/sources/alfred/alfred-2019.1.tar.gz.asc * The latest stable version of batmand ([[open-mesh:BranchesExplained#batmand|unmaintained]]) is "batman-0.3.2.tar.gz":https://downloads.open-mesh.org/batman/releases/batman-0.3.2/batman-0.3.2.tar.gz "md5":https://downloads.open-mesh.org/batman/releases/batman-0.3.2/batman-0.3.2.tar.gz.md5 "sha1":https://downloads.open-mesh.org/batman/releases/batman-0.3.2/batman-0.3.2.tar.gz.sha1 "asc":https://downloads.open-mesh.org/batman/releases/batman-0.3.2/batman-0.3.2.tar.gz.asc * The latest version of the vis server for the batmand (package not needed for batman-adv) is "vis-0.3.2.tar.gz":https://downloads.open-mesh.org/batman/releases/batman-0.3.2/vis-0.3.2.tar.gz "md5":https://downloads.open-mesh.org/batman/releases/batman-0.3.2/vis-0.3.2.tar.gz.md5 "sha1":https://downloads.open-mesh.org/batman/releases/batman-0.3.2/vis-0.3.2.tar.gz.sha1 "asc":https://downloads.open-mesh.org/batman/releases/batman-0.3.2/vis-0.3.2.tar.gz.asc @@ -77,6 +77,7 @@ It follows an overview of linux versions and the batman-adv version they contain * linux 4.19 => batman-adv 2018.3 (get batctl 2018.3 from "here":https://downloads.open-mesh.org/batman/stable/sources/batctl/) * linux 4.20 => batman-adv 2018.4 (get batctl 2018.4 from "here":https://downloads.open-mesh.org/batman/stable/sources/batctl/) * linux 5.0 => batman-adv 2019.0 (get batctl 2019.0 from "here":https://downloads.open-mesh.org/batman/stable/sources/batctl/) +* linux 5.0 => batman-adv 2019.1 (get batctl 2019.1 from "here":https://downloads.open-mesh.org/batman/stable/sources/batctl/) h2. Arch Linux

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[doc] backup-redmine/2019-09-14, master: doc: open-mesh/Emulation (dbfe2e7)
by postmaster＠open-mesh.org 15 Sep '19

15 Sep '19

1 0

[doc] backup-redmine/2019-09-14, master: doc: batman-adv/Multicast-optimizations: don't reference deprecated sysfs files (2fcf3c2)
by postmaster＠open-mesh.org 15 Sep '19

15 Sep '19

1 0

[doc] backup-redmine/2019-09-14, master: doc: batman-adv/Batman-adv-openwrt-config (eb0450b)
by postmaster＠open-mesh.org 15 Sep '19

15 Sep '19

1 0

[doc] backup-redmine/2019-09-14, master: doc: batman-adv/Broadcast (8b8a4fe)
by postmaster＠open-mesh.org 15 Sep '19

15 Sep '19

Repository : ssh://git@open-mesh.org/doc On branches: backup-redmine/2019-09-14,master >--------------------------------------------------------------- commit 8b8a4fecfa06291872ce9c0545a2f00c750669db Author: Linus Lüssing <linus.luessing(a)c0d3.blue> Date: Fri May 3 23:42:12 2019 +0000 doc: batman-adv/Broadcast >--------------------------------------------------------------- 8b8a4fecfa06291872ce9c0545a2f00c750669db batman-adv/Broadcast.textile | 25 ++++++++++++++++++++++++- 1 file changed, 24 insertions(+), 1 deletion(-) diff --git a/batman-adv/Broadcast.textile b/batman-adv/Broadcast.textile index 3733a63..94352eb 100644 --- a/batman-adv/Broadcast.textile +++ b/batman-adv/Broadcast.textile @@ -30,9 +30,32 @@ h2. IP Multicast Optimizations todo - h2. Broadcast Avoidances +When a node sees just one or no neighbor on a specific interface, then the following, simple rules can be applied to avoid broadcasts on this interface: + +h3. I.I) No Neighbor + +!bcast-avoid-no-neighbor.png! + +* If an interface has no neighbor, then no broadcast is necessary. + +We can avoid sending a packet into the void. + +h3. I.II) Single Neighbor: Is Originator + +!bcast-avoid-single-orig.png! + +_Three nodes with a single neighbor per interface each_ + +* If an interface has just one neighbor and it matches the OGM2 or broadcast packets originator address, then no broadcast is necessary. + +We can avoid echoing a packet back to the node it originally came from. + +h3. I.III) Single Neighbor: Is Previous Sender + +!bcast-avoid-single-fwd.png! + h2. __noflood__ Tagging todo \ No newline at end of file

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[doc] backup-redmine/2019-09-14, master: doc: batman-adv/Features (fdc57be)
by postmaster＠open-mesh.org 15 Sep '19

15 Sep '19

Repository : ssh://git@open-mesh.org/doc On branches: backup-redmine/2019-09-14,master >--------------------------------------------------------------- commit fdc57be412c140d3a1a3a5fb933f18da6709f406 Author: Linus Lüssing <linus.luessing(a)c0d3.blue> Date: Sat May 4 00:53:57 2019 +0000 doc: batman-adv/Features >--------------------------------------------------------------- fdc57be412c140d3a1a3a5fb933f18da6709f406 batman-adv/Features.textile | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/batman-adv/Features.textile b/batman-adv/Features.textile index 0b87dda..6ffc2d2 100644 --- a/batman-adv/Features.textile +++ b/batman-adv/Features.textile @@ -2,15 +2,17 @@ h2. Features __Miscellaneous Features__ - * news#38 - The inner workings of the non-mesh client integration revealed. * [[bridge-loop-avoidance|Bridge loop avoidance]] - Document explaining the bridge loop avoidance implemented in batman-adv. -* [[Multi-link-optimize|Multi-Link Optimizations]] - how to optimize traffic by using multiple links * [[ap-isolation|AP Isolation]] - How to prevent wifi-client to wifi-client communication. * news#43 - basic concept behind the layer2 fragmentation (GSoC final report) -* [[NetworkCoding|Network Coding]] - Combine two packets into a single transmission to save air time. * [[alfred:|Alfred]] - Use alfred to send local information or visualize your mesh network +__Link-Forwarding Optimizations__ + +* [[Multi-link-optimize|Multi-Link Optimizations]] - how to optimize traffic by using multiple links +* [[NetworkCoding|Network Coding]] - Combine two packets into a single transmission to save air time. + __Broadcast & Multicast__ * [[Broadcast|Broadcasts in B.A.T.M.A.N. Advanced]] - An overview of broadcast/multicast support

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[doc] backup-redmine/2019-09-14, master: doc: batman-adv/noflood-assembly.dia (69142ce)
by postmaster＠open-mesh.org 15 Sep '19

15 Sep '19

Repository : ssh://git@open-mesh.org/doc On branches: backup-redmine/2019-09-14,master >--------------------------------------------------------------- commit 69142ce9919c3e758db552a651c4f2fe0f963199 Author: Linus Lüssing <linus.luessing(a)c0d3.blue> Date: Sat May 4 02:34:03 2019 +0000 doc: batman-adv/noflood-assembly.dia >--------------------------------------------------------------- 69142ce9919c3e758db552a651c4f2fe0f963199 batman-adv/noflood-assembly.dia | Bin 0 -> 3066 bytes 1 file changed, 0 insertions(+), 0 deletions(-) diff --git a/batman-adv/noflood-assembly.dia b/batman-adv/noflood-assembly.dia new file mode 100644 index 0000000..fb95dad Binary files /dev/null and b/batman-adv/noflood-assembly.dia differ

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commits September 2019