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[doc] backup-redmine,main: doc: batman-adv/Multicast-IGMP-MLD-Report-Forwarding (ceaf821b)
by postmaster＠open-mesh.org 10 May '24

10 May '24

Repository : ssh://git@diktynna/doc On branches: backup-redmine,main >--------------------------------------------------------------- commit ceaf821bbcd8a94c3f7894962e95f23618e038f8 Author: Linus Lüssing <linus.luessing(a)c0d3.blue> Date: Fri Apr 19 21:18:21 2024 +0000 doc: batman-adv/Multicast-IGMP-MLD-Report-Forwarding >--------------------------------------------------------------- ceaf821bbcd8a94c3f7894962e95f23618e038f8 batman-adv/Multicast-IGMP-MLD-Report-Forwarding.textile | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/batman-adv/Multicast-IGMP-MLD-Report-Forwarding.textile b/batman-adv/Multicast-IGMP-MLD-Report-Forwarding.textile index dde5ce51..3cbc1330 100644 --- a/batman-adv/Multicast-IGMP-MLD-Report-Forwarding.textile +++ b/batman-adv/Multicast-IGMP-MLD-Report-Forwarding.textile @@ -107,8 +107,10 @@ Answer: **no!** **Potential Workarounds:** A) Set bridge port _multicast_router_ setting for bat0 to 2 (e.g.: _$ echo 2 > /sys/class/net/bat0/brport/multicast_router_) => always forwards multicast packets to bat0 -B) Send report not just to multicast routers, but also to queriers (not implemented) -C) Export batman-adv TT-global to bridge MDB (not implemented) +B) Run a multicast router on br0 of node Y (disadvantage: receives all multicast packets) +C) Run a bridged-in multicast router (which supports MRD) on node Y (disadvantage: receives all multicast packets) +D) Send report not just to multicast routers, but also to queriers (not implemented) +E) Export batman-adv TT-global to bridge MDB (not implemented) h3. Scenario D: Multicast to/from host on node with a bridged-in querier

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[doc] backup-redmine,main: doc: devtools/Kernel_hacking_Debian_image: switch to Debian bookworm (771ef99e)
by postmaster＠open-mesh.org 10 May '24

10 May '24

Repository : ssh://git@diktynna/doc On branches: backup-redmine,main >--------------------------------------------------------------- commit 771ef99eb0437448e8e17d37f8a649cfa24a829a Author: Sven Eckelmann <sven(a)narfation.org> Date: Sat May 4 19:49:47 2024 +0000 doc: devtools/Kernel_hacking_Debian_image: switch to Debian bookworm >--------------------------------------------------------------- 771ef99eb0437448e8e17d37f8a649cfa24a829a devtools/Kernel_hacking_Debian_image.textile | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/devtools/Kernel_hacking_Debian_image.textile b/devtools/Kernel_hacking_Debian_image.textile index 60059d78..c7403497 100644 --- a/devtools/Kernel_hacking_Debian_image.textile +++ b/devtools/Kernel_hacking_Debian_image.textile @@ -23,12 +23,11 @@ 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 bullseye debian +sudo debootstrap bookworm debian sudo systemd-nspawn -D debian apt update sudo systemd-nspawn -D debian apt install --no-install-recommends build-essential vim openssh-server less \ pkg-config libnl-3-dev libnl-genl-3-dev libcap-dev tcpdump rng-tools5 \ trace-cmd flex bison libelf-dev libdw-dev binutils-dev libunwind-dev libssl-dev libslang2-dev liblzma-dev libperl-dev -sudo systemd-nspawn -D debian apt remove rsyslog sudo systemd-nspawn -D debian systemctl enable fstrim.timer sudo mkdir debian/root/.ssh/ @@ -39,8 +38,8 @@ sudo sh -c 'cat > debian/etc/fstab << EOF host /host 9p trans=virtio,version=9p2000.L,posixacl,msize=524288 0 0 EOF' -sudo sh -c 'cat > debian/etc/rc.local << "EOF" -#!/bin/sh -e +sudo sh -c 'cat > debian/etc/boot.d/test-init << "EOF" +#!/bin/sh MAC_PART="$(ip link show enp0s1 | awk "/ether/ {print \$2}"| sed -e "s/.*://" -e "s/[\\n\\ ].*//"|awk "{print (\"0x\"\$1)*1 }")" IP_PART="$(echo $MAC_PART|awk "{ print \$1+50 }")" @@ -52,7 +51,7 @@ 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 chmod a+x debian/etc/boot.d/test-init sudo sed -i 's/^root:[^:]*:/root::/' debian/etc/shadow

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[doc] backup-redmine,main: doc: devtools/Kernel_hacking_Debian_image: fix same "random" mac addresses with udev after 6d36464065601f79a352367cf099be8907d8f9aa due to shared machine-id (e56d1a0f)
by postmaster＠open-mesh.org 10 May '24

10 May '24

Repository : ssh://git@diktynna/doc On branches: backup-redmine,main >--------------------------------------------------------------- commit e56d1a0f7631e818eca1b215d19f97f208f0df3b Author: Sven Eckelmann <sven(a)narfation.org> Date: Sat May 4 21:15:50 2024 +0000 doc: devtools/Kernel_hacking_Debian_image: fix same "random" mac addresses with udev after 6d36464065601f79a352367cf099be8907d8f9aa due to shared machine-id >--------------------------------------------------------------- e56d1a0f7631e818eca1b215d19f97f208f0df3b devtools/Kernel_hacking_Debian_image.textile | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/devtools/Kernel_hacking_Debian_image.textile b/devtools/Kernel_hacking_Debian_image.textile index c7403497..641de3f7 100644 --- a/devtools/Kernel_hacking_Debian_image.textile +++ b/devtools/Kernel_hacking_Debian_image.textile @@ -26,9 +26,10 @@ sudo mount -o loop debian.img debian sudo debootstrap bookworm debian sudo systemd-nspawn -D debian apt update sudo systemd-nspawn -D debian apt install --no-install-recommends build-essential vim openssh-server less \ - pkg-config libnl-3-dev libnl-genl-3-dev libcap-dev tcpdump rng-tools5 \ + pkg-config libnl-3-dev libnl-genl-3-dev libcap-dev tcpdump rng-tools5 initscripts \ trace-cmd flex bison libelf-dev libdw-dev binutils-dev libunwind-dev libssl-dev libslang2-dev liblzma-dev libperl-dev sudo systemd-nspawn -D debian systemctl enable fstrim.timer +sudo rm debian/etc/machine-id sudo mkdir debian/root/.ssh/ ssh-add -L | sudo tee debian/root/.ssh/authorized_keys @@ -38,6 +39,7 @@ sudo sh -c 'cat > debian/etc/fstab << EOF host /host 9p trans=virtio,version=9p2000.L,posixacl,msize=524288 0 0 EOF' +sudo mkdir -p debian/etc/boot.d/ sudo sh -c 'cat > debian/etc/boot.d/test-init << "EOF" #!/bin/sh

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[doc] backup-redmine,main: doc: devtools/Kernel_hacking_Debian_image (797997cb)
by postmaster＠open-mesh.org 10 May '24

10 May '24

Repository : ssh://git@diktynna/doc On branches: backup-redmine,main >--------------------------------------------------------------- commit 797997cb413c1cbfe8ae5b0541f6f10a8408e286 Author: Sven Eckelmann <sven(a)narfation.org> Date: Sat May 4 21:21:04 2024 +0000 doc: devtools/Kernel_hacking_Debian_image >--------------------------------------------------------------- 797997cb413c1cbfe8ae5b0541f6f10a8408e286 devtools/Kernel_hacking_Debian_image.textile | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/devtools/Kernel_hacking_Debian_image.textile b/devtools/Kernel_hacking_Debian_image.textile index 641de3f7..4c13ad27 100644 --- a/devtools/Kernel_hacking_Debian_image.textile +++ b/devtools/Kernel_hacking_Debian_image.textile @@ -88,9 +88,8 @@ sudo zerofree -v debian.img sudo fallocate --dig-holes debian.img -## optionally: convert image to qcow2 -#sudo qemu-img convert -c -f raw -O qcow2 debian.img debian.qcow2 -#sudo mv debian.qcow2 debian.img +sudo qemu-img convert -c -f raw -O qcow2 debian.img debian.qcow2 +sudo mv debian.qcow2 debian.img </code></pre> h2. Kernel compile

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[doc] backup-redmine,main: doc: devtools/OpenWrt_in_QEMU: Ensure that user specifies backing format (c38cc429)
by postmaster＠open-mesh.org 10 May '24

10 May '24

Repository : ssh://git@diktynna/doc On branches: backup-redmine,main >--------------------------------------------------------------- commit c38cc4294bd7b0deaf62f60f2c17760271af4169 Author: Sven Eckelmann <sven(a)narfation.org> Date: Sat May 4 21:26:16 2024 +0000 doc: devtools/OpenWrt_in_QEMU: Ensure that user specifies backing format >--------------------------------------------------------------- c38cc4294bd7b0deaf62f60f2c17760271af4169 devtools/OpenWrt_in_QEMU.textile | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/devtools/OpenWrt_in_QEMU.textile b/devtools/OpenWrt_in_QEMU.textile index aba6f9ef..d814fdfd 100644 --- a/devtools/OpenWrt_in_QEMU.textile +++ b/devtools/OpenWrt_in_QEMU.textile @@ -95,10 +95,12 @@ NUM_SESSIONS=3 ## OpenWrt in QEMU BASE_IMG=openwrt-x86-64-combined-ext4.img +BASE_IMG_FMT=raw BOOTARGS+=("-serial" "chardev:charconsole0") ## Kernel hacking Debian image -#BASE_IMG=debian.img +#BASE_IMG=debian.qcow2 +#BASE_IMG_FMT=qcow2 #BOOTARGS+=("-bios" "qboot/build/bios.bin") #BOOTARGS+=("-kernel" "linux-next/arch/x86/boot/bzImage") #BOOTARGS+=("-append" "root=/dev/sda rw console=hvc0 nokaslr tsc=reliable no_timer_check noreplace-smp rootfstype=ext4 rcupdate.rcu_expedited=1 reboot=t pci=lastbus=0 i8042.direct=1 i8042.dumbkbd=1 i8042.nopnp=1 i8042.noaux=1 no_hash_pointers") @@ -115,7 +117,7 @@ for i in $(seq 1 "${NUM_SESSIONS}"); do normalized_id="$(echo "$i"|awk '{ printf "%02d\n",$1 }')" twodigit_id="$(echo $i|awk '{ printf "%02X", $1 }')" - qemu-img create -b "${BASE_IMG}" -f qcow2 -F qcow2 root.cow$i + qemu-img create -b "${BASE_IMG}" -f qcow2 -F "${BASE_IMG_FMT}" root.cow$i screen qemu-system-x86_64 -enable-kvm -name "instance${i}" \ -display none -no-user-config -nodefaults \ -m 512M,maxmem=2G,slots=2 -device virtio-balloon \

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[doc] backup-redmine,main: doc: batman-adv/mld-to-mcast-routers-only-scenario-C.png (a8a2f431)
by postmaster＠open-mesh.org 10 May '24

10 May '24

Repository : ssh://git@diktynna/doc On branches: backup-redmine,main >--------------------------------------------------------------- commit a8a2f43140713eeb3848bb41c148b0a0729c26db Author: Linus Lüssing <linus.luessing(a)c0d3.blue> Date: Fri Apr 19 21:08:32 2024 +0000 doc: batman-adv/mld-to-mcast-routers-only-scenario-C.png >--------------------------------------------------------------- a8a2f43140713eeb3848bb41c148b0a0729c26db batman-adv/mld-to-mcast-routers-only-scenario-C.png | Bin 0 -> 67036 bytes 1 file changed, 0 insertions(+), 0 deletions(-) diff --git a/batman-adv/mld-to-mcast-routers-only-scenario-C.png b/batman-adv/mld-to-mcast-routers-only-scenario-C.png new file mode 100644 index 00000000..e2b456f4 Binary files /dev/null and b/batman-adv/mld-to-mcast-routers-only-scenario-C.png differ

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[doc] backup-redmine,main: doc: batman-adv/mld-to-mcast-routers-only-scenario-B.dia (c39edaa2)
by postmaster＠open-mesh.org 10 May '24

10 May '24

Repository : ssh://git@diktynna/doc On branches: backup-redmine,main >--------------------------------------------------------------- commit c39edaa26d000ad9dc9c579a317cbec937ee2f17 Author: Linus Lüssing <linus.luessing(a)c0d3.blue> Date: Fri Apr 19 21:08:33 2024 +0000 doc: batman-adv/mld-to-mcast-routers-only-scenario-B.dia >--------------------------------------------------------------- c39edaa26d000ad9dc9c579a317cbec937ee2f17 batman-adv/mld-to-mcast-routers-only-scenario-B.dia | Bin 0 -> 3494 bytes 1 file changed, 0 insertions(+), 0 deletions(-) diff --git a/batman-adv/mld-to-mcast-routers-only-scenario-B.dia b/batman-adv/mld-to-mcast-routers-only-scenario-B.dia new file mode 100644 index 00000000..59c2c473 Binary files /dev/null and b/batman-adv/mld-to-mcast-routers-only-scenario-B.dia differ

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[doc] backup-redmine,main: doc: batman-adv/mld-to-mcast-routers-only-scenario-C.dia (2bb4f79a)
by postmaster＠open-mesh.org 10 May '24

10 May '24

Repository : ssh://git@diktynna/doc On branches: backup-redmine,main >--------------------------------------------------------------- commit 2bb4f79a90600de7045f9df949c3b4d17bfa81e1 Author: Linus Lüssing <linus.luessing(a)c0d3.blue> Date: Fri Apr 19 21:08:33 2024 +0000 doc: batman-adv/mld-to-mcast-routers-only-scenario-C.dia >--------------------------------------------------------------- 2bb4f79a90600de7045f9df949c3b4d17bfa81e1 batman-adv/mld-to-mcast-routers-only-scenario-C.dia | Bin 0 -> 3589 bytes 1 file changed, 0 insertions(+), 0 deletions(-) diff --git a/batman-adv/mld-to-mcast-routers-only-scenario-C.dia b/batman-adv/mld-to-mcast-routers-only-scenario-C.dia new file mode 100644 index 00000000..372a1111 Binary files /dev/null and b/batman-adv/mld-to-mcast-routers-only-scenario-C.dia differ

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[doc] backup-redmine,main: doc: batman-adv/Multicast-IGMP-MLD-Report-Forwarding (e7e3c932)
by postmaster＠open-mesh.org 10 May '24

10 May '24

Repository : ssh://git@diktynna/doc On branches: backup-redmine,main >--------------------------------------------------------------- commit e7e3c932a90b1413ceefdaca4e18e280ee2ba956 Author: Linus Lüssing <linus.luessing(a)c0d3.blue> Date: Fri Apr 19 21:08:34 2024 +0000 doc: batman-adv/Multicast-IGMP-MLD-Report-Forwarding >--------------------------------------------------------------- e7e3c932a90b1413ceefdaca4e18e280ee2ba956

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[doc] backup-redmine,main: doc: batman-adv/Multicast-IGMP-MLD-Report-Forwarding (f0ed77e2)
by postmaster＠open-mesh.org 10 May '24

10 May '24

Repository : ssh://git@diktynna/doc On branches: backup-redmine,main >--------------------------------------------------------------- commit f0ed77e2a33a8432e7d6217e4b584d05a1ebc0e7 Author: Linus Lüssing <linus.luessing(a)c0d3.blue> Date: Fri Apr 19 21:14:50 2024 +0000 doc: batman-adv/Multicast-IGMP-MLD-Report-Forwarding >--------------------------------------------------------------- f0ed77e2a33a8432e7d6217e4b584d05a1ebc0e7 batman-adv/Multicast-IGMP-MLD-Report-Forwarding.textile | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/batman-adv/Multicast-IGMP-MLD-Report-Forwarding.textile b/batman-adv/Multicast-IGMP-MLD-Report-Forwarding.textile index 533ac971..dde5ce51 100644 --- a/batman-adv/Multicast-IGMP-MLD-Report-Forwarding.textile +++ b/batman-adv/Multicast-IGMP-MLD-Report-Forwarding.textile @@ -109,3 +109,15 @@ Answer: **no!** A) Set bridge port _multicast_router_ setting for bat0 to 2 (e.g.: _$ echo 2 > /sys/class/net/bat0/brport/multicast_router_) => always forwards multicast packets to bat0 B) Send report not just to multicast routers, but also to queriers (not implemented) C) Export batman-adv TT-global to bridge MDB (not implemented) + +h3. Scenario D: Multicast to/from host on node with a bridged-in querier + +WIP + +h4. Scenario D, Overview: + +_Can bridged-in host A send multicast to bridged-in host B?_ + +h4. Scenario D, Analysis: + +Answer: yes \ No newline at end of file

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