February 2020 - commits - lists.open-mesh.org

[linux-merge]linux integration; annotated tag, v5.6-rc3, created. v5.6-rc3

by postmaster＠open-mesh.org

The annotated tag, v5.6-rc3 has been created at 7ac2ca549c3b362873332019d4f62e71b0deab4a (tag) tagging f8788d86ab28f61f7b46eb6be375f8a726783636 (commit) replaces v5.6-rc2 tagged by Linus Torvalds on Sun Feb 23 16:17:57 2020 -0800 - Shortlog ------------------------------------------------------------ Linux 5.6-rc3 -----BEGIN PGP SIGNATURE----- iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAl5TFjYeHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGikYIAIhI4C8R87wyj/0m b2NWk6TZ5AFmiZLYSbsPYxdSC9OLdUmlGFKgL2SyLTwZCiHChm+cNBrngp3hJ6gz x1YH99HdjzkiaLa0hCc2+a/aOt8azGU2RiWEP8rbo0gFSk28wE6FjtzSxR95jyPz FRKo/sM+dHBMFXrthJbr+xHZ1De28MITzS2ddstr/10ojoRgm43I3qo1JKhjoDN5 9GGb6v0Md5eo+XZjjB50CvgF5GhpiqW7+HBB7npMsgTk37GdsR5RlosJ/TScLVC9 dNeanuqk8bqMGM0u2DFYdDqjcqAlYbt8aobuWWCB5xgPBXr5G2nox+IgF/f9G6UH EShA/xs= =OFPc -----END PGP SIGNATURE----- ----------------------------------------------------------------------- -- linux integration

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[batman-adv] maint's head updated: batman-adv: Don't schedule OGM for disabled interface (a089c55c)

by postmaster＠open-mesh.org

Repository : ssh://git@diktynna/batman-adv Branch 'maint' now includes: a089c55c batman-adv: Don't schedule OGM for disabled interface

11 months, 1 week

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[batman-adv] master: batman-adv: Don't schedule OGM for disabled interface (a089c55c)

by postmaster＠open-mesh.org

Repository : ssh://git@diktynna/batman-adv On branch : master >--------------------------------------------------------------- commit a089c55ca004b396d340baae58abe9a79f32cc0f Author: Sven Eckelmann <sven(a)narfation.org> Date: Sun Feb 16 13:02:06 2020 +0100 batman-adv: Don't schedule OGM for disabled interface A transmission scheduling for an interface which is currently dropped by batadv_iv_ogm_iface_disable could still be in progress. The B.A.T.M.A.N. V is simply cancelling the workqueue item in an synchronous way but this is not possible with B.A.T.M.A.N. IV because the OGM submissions are intertwined. Instead it has to stop submitting the OGM when it detect that the buffer pointer is set to NULL. Reported-by: syzbot+a98f2016f40b9cd3818a(a)syzkaller.appspotmail.com Reported-by: syzbot+ac36b6a33c28a491e929(a)syzkaller.appspotmail.com Fixes: c6c8fea29769 ("net: Add batman-adv meshing protocol") Signed-off-by: Sven Eckelmann <sven(a)narfation.org> Cc: Hillf Danton <hdanton(a)sina.com> Signed-off-by: Simon Wunderlich <sw(a)simonwunderlich.de> >--------------------------------------------------------------- a089c55ca004b396d340baae58abe9a79f32cc0f net/batman-adv/bat_iv_ogm.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index 5b0b20e6..d88a4de0 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -789,6 +789,10 @@ static void batadv_iv_ogm_schedule_buff(struct batadv_hard_iface *hard_iface) lockdep_assert_held(&hard_iface->bat_iv.ogm_buff_mutex); + /* interface already disabled by batadv_iv_ogm_iface_disable */ + if (!*ogm_buff) + return; + /* the interface gets activated here to avoid race conditions between * the moment of activating the interface in * hardif_activate_interface() where the originator mac is set and

11 months, 1 week

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[batman-adv] master: Merge branch 'maint' (0b7b07f5)

by postmaster＠open-mesh.org

Repository : ssh://git@diktynna/batman-adv On branch : master >--------------------------------------------------------------- commit 0b7b07f55b542d8242bb5697b472df4fbcea1982 Merge: dd5387bd a089c55c Author: Sven Eckelmann <sven(a)narfation.org> Date: Tue Feb 18 09:16:05 2020 +0100 Merge branch 'maint' >--------------------------------------------------------------- 0b7b07f55b542d8242bb5697b472df4fbcea1982 net/batman-adv/bat_iv_ogm.c | 4 ++++ 1 file changed, 4 insertions(+)

11 months, 1 week

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[linux-merge]linux integration; annotated tag, v5.6-rc2, created. v5.6-rc2

by postmaster＠open-mesh.org

The annotated tag, v5.6-rc2 has been created at f955178516c014cb4e40b6ce10f227fa0a6c2ae2 (tag) tagging 11a48a5a18c63fd7621bb050228cebf13566e4d8 (commit) replaces v5.6-rc1 tagged by Linus Torvalds on Sun Feb 16 13:17:08 2020 -0800 - Shortlog ------------------------------------------------------------ Linux 5.6-rc2 -----BEGIN PGP SIGNATURE----- iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAl5JsVQeHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGHZEH+wddtJO4dZk5TZdF KZB2w2ldsCvrBZAmas1TVvm8ncvUf+ATUZcSIzvZ3YbLmxsuLF2Cz3kD+n+36Mvy ejwq8Scl7jwnouYps/Gfd6rRj/uCafqST4qp15GMGeiy2ST4A8dJrv5IAgZhD8/N SN1bSr1AXpZ2JlEzzLDQ/NdVoNMS6IzCOsaINZcc60/XQoQZFRBWamMJFqu+CmXD SBJOybQNFJhziy45cGZSAl+67sSCcoPftwTs0Stu4CJsvFWRb3MsbNTDS51Hjcc4 3tdgGOhoNXzyzZr96MEAHmiaW4VLQv0PGgUfOajE35viMz48OrwCTru8Kbuae3XM YHV4qJk= =yiem -----END PGP SIGNATURE----- ----------------------------------------------------------------------- -- linux integration

11 months, 1 week

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[linux-merge]linux integration; annotated tag, v5.6-rc1, created. v5.6-rc1

by postmaster＠open-mesh.org

The annotated tag, v5.6-rc1 has been created at ec001be2a91bfa61dba0347677856410f82df0b4 (tag) tagging bb6d3fb354c5ee8d6bde2d576eb7220ea09862b9 (commit) replaces v5.5 tagged by Linus Torvalds on Sun Feb 9 16:08:57 2020 -0800 - Shortlog ------------------------------------------------------------ Linux 5.6-rc1 -----BEGIN PGP SIGNATURE----- iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAl5AnxkeHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGca0H+QHA5sm2Mxlg/4hk E3M+vDPwn69KeHAVL6OUl3LT03J1+KuBdtAcbHlTm6ikBBHVghKySSVVixguZnOO rExO9o7vVIto/HpzLWgWPHoFj9Z5ij/Xn0O+QD1qY1pbwuKPV4w6U/NpyN48nv6L gsVmhS9Z8FzNqvyyqXmiuxoVN3tYdhcoRtNMpgG0jkvgGMy0nGzhjCJGqnRiXKGo Xu1zNRJ7SUsp3/hzDAKm0WNSa+gEVAJEGjb/JYAu01XoXxX3Z8OxeOdygmmV3a7t dGW1yTsWOSZlRMPRu4TI+ktTNvYldXn8qRPmjilVaDtdvzayL/4JM2ZnAg5SlnBB Qb+qBc8= =6xDw -----END PGP SIGNATURE----- David S. Miller (3): Merge git://git.kernel.org/.../netdev/net Merge tag 'batadv-next-for-davem-20200114' of git://git.open-mesh.org/linux-merge Merge ra.kernel.org:/.../netdev/net René Treffer (1): batman-adv: ELP - use wifi tx bitrate as fallback throughput Simon Wunderlich (1): batman-adv: Start new development cycle Sven Eckelmann (5): batman-adv: Strip dots from variable macro kerneldoc batman-adv: Fix typo metAdata batman-adv: Annotate bitwise integer pointer casts batman-adv: Update copyright years for 2020 batman-adv: Disable CONFIG_BATMAN_ADV_SYSFS by default ----------------------------------------------------------------------- -- linux integration

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[doc] master: Merge branch 'backup-redmine/2020-02-08' (cee3a86)

by postmaster＠open-mesh.org

Repository : ssh://git@open-mesh.org/doc On branch : master >--------------------------------------------------------------- commit cee3a86f22e98abd854674d34e1990d627a21624 Merge: cbe4884 a6a1d67 Author: Sven Eckelmann <sven(a)narfation.org> Date: Sat Feb 8 21:05:19 2020 +0100 Merge branch 'backup-redmine/2020-02-08' >--------------------------------------------------------------- cee3a86f22e98abd854674d34e1990d627a21624 open-mesh/Kernel_hacking_Debian_image.rst | 1 + 1 file changed, 1 insertion(+) diff --cc open-mesh/Kernel_hacking_Debian_image.rst index 652104c,0000000..0797814 mode 100644,000000..100644 --- a/open-mesh/Kernel_hacking_Debian_image.rst +++ b/open-mesh/Kernel_hacking_Debian_image.rst @@@ -1,430 -1,0 +1,431 @@@ +.. SPDX-License-Identifier: GPL-2.0 + +Kernel hacking Debian image +=========================== + +The :doc:`OpenWrt image <OpenWrt_in_QEMU>` is an easy way to start multiple +virtual instances. But these instances usually don’t provide the +required infrastructure to test kernel modules extensively. And it also +depends on special toolchains to prepare the used tools/modules which +should tested. + +It is often easier to use the same operating system in the virtual +environment and on the host. Only the kernel is modified here to provide +the necessary helpers for in-kernel development. + +An interested reader might even extend this further to only provide a +modified kernel and use the currently running rootfs also in the virtual +environment. Such an approach is used in `hostap’s test +vm <https://w1.fi/cgit/hostap/tree/tests/hwsim/vm>`__ but it is out of +scope for this document. + +Create an Image +--------------- + +The debian root filesystem is used here to a minimal system to boot and +run the test programs. It is a simple ext4 filesystem with only +userspace components from Debian. The configuration is changed to: + +* automatically mount the shared folder +* automatically set up a static IPv4 address and hostname on bootup +* start a test-init.sh script from the shared folder on bootup +* disable root password +* prefer batctl binary from shared folder’s batctl subdirectory instead + of virtual environment binary + +The installation is also cleaned up at the end to reduce the required +storage space + +.. code-block:: sh + + 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 buster debian + sudo chroot debian apt update + 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 libperl-dev + + sudo mkdir debian/root/.ssh/ + ssh-add -L | sudo tee debian/root/.ssh/authorized_keys + + sudo mkdir debian/host + sudo sh -c 'cat > debian/etc/fstab << EOF + host /host 9p trans=virtio,version=9p2000.L 0 0 + EOF' + + sudo sh -c 'cat > debian/etc/rc.local << "EOF" + #!/bin/sh -e + + MAC_PART="$(ip link show enp0s1 | awk "/ether/ {print \$2}"| sed -e "s/.*://" -e "s/[\\n\\ ].*//"|awk "{print (\"0x\"\$1)*1 }")" + IP_PART="$(echo $MAC_PART|awk "{ print \$1+50 }")" + NODE_NR="$(echo $MAC_PART|awk "{ printf(\"%02d\", \$1) }")" + ip addr add 192.168.251.${IP_PART}/24 dev enp0s1 + ip link set up dev enp0s1 + hostname "node"$NODE_NR + ip link set up dev lo + [ ! -x /host/test-init.sh ] || /host/test-init.sh + exit 0 + EOF' + sudo chmod a+x debian/etc/rc.local + + sudo sed -i 's/^root:[^:]*:/root::/' debian/etc/shadow + + ## optionally: allow ssh logins without passwords + # sudo sed -i 's/^#PermitRootLogin.*/PermitRootLogin yes/' debian/etc/ssh/sshd_config + # sudo sed -i 's/^#PermitEmptyPasswords.*/PermitEmptyPasswords yes/' debian/etc/ssh/sshd_config + # sudo sed -i 's/^UsePAM.*/UsePAM no/' debian/etc/ssh/sshd_config + + ## optionally: enable autologin for user root + #sudo mkdir debian/etc/systemd/system/serial-getty(a)hvc0.service.d/ + #sudo sh -c 'cat > debian/etc/systemd/system/serial-getty(a)hvc0.service.d/autologin.conf << EOF + #[Service] + #ExecStart= + #ExecStart=-/sbin/agetty --autologin root -s %I 115200,38400,9600 vt102 + #EOF' + + sudo sh -c 'echo '\''PATH="/host/batctl/:$PATH"'\'' >> debian/etc/profile' + sudo rm debian/var/cache/apt/archives/*.deb + sudo rm debian/var/lib/apt/lists/* + sudo e4defrag -v debian/ + sudo umount debian + 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 + +Kernel compile +-------------- + +Any recent kernel can be used for the setup. We will use linux-next here +to get the most recent development kernels. It is also assumed that the +sources are copied to the same directory as the debian.img and a x86_64 +image will be used. + +The kernel will be build to enhance the virtualization and debugging +experience. It is configured with: + +* basic kernel features +* support for necessary drivers +* kernel hacking helpers +* kernel address + undefined sanitizers +* support for hwsim + +.. code-block:: sh + + # make sure that libelf-dev is installed or module build will fail with something like "No rule to make target 'net/batman-adv/bat_algo.o'" + + git clone git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git + cd linux-next + + make allnoconfig + cat >> .config << EOF + + # small configuration + CONFIG_SMP=y + CONFIG_EMBEDDED=n + # CONFIG_EXPERT is not set + CONFIG_MODULES=y + CONFIG_MODULE_UNLOAD=y + CONFIG_MODVERSIONS=y + CONFIG_MODULE_SRCVERSION_ALL=y + CONFIG_64BIT=y + CONFIG_X86_VSYSCALL_EMULATION=n + CONFIG_IA32_EMULATION=n + CONFIG_VOP_BUS=y + CONFIG_VOP=y + CONFIG_HW_RANDOM_VIRTIO=y + CONFIG_NET_9P_VIRTIO=y + CONFIG_VIRTIO_MENU=y + CONFIG_SCSI_VIRTIO=y + CONFIG_VIRTIO_BALLOON=y + CONFIG_VIRTIO_BLK=y + CONFIG_VIRTIO_CONSOLE=y + CONFIG_VIRTIO_INPUT=y + CONFIG_VIRTIO_NET=y + CONFIG_VIRTIO_PCI=y + CONFIG_VIRTIO_PCI_LEGACY=y + CONFIG_VIRTIO_BALLOON=y + CONFIG_VIRTIO_BLK_SCSI=y + CONFIG_VIRTIO_INPUT=y + CONFIG_VIRTIO_MMIO=y + CONFIG_VIRTIO_MMIO_CMDLINE_DEVICES=y + CONFIG_RPMSG_VIRTIO=y + CONFIG_VSOCKETS=y + CONFIG_VIRTIO_VSOCKETS=y + CONFIG_DRM=y + CONFIG_DRM_VIRTIO_GPU=y + CONFIG_CAIF=y + CONFIG_CAIF_VIRTIO=y + CONFIG_CRYPTO_DEV_VIRTIO=y + CONFIG_FUSE_FS=y + CONFIG_VIRTIO_FS=y + CONFIG_IOMMU_SUPPORT=y + CONFIG_VIRTIO_IOMMU=y + CONFIG_LIBNVDIMM=y + CONFIG_VIRTIO_PMEM=y + CONFIG_CRC16=y + CONFIG_LIBCRC32C=y + CONFIG_CRYPTO_SHA512=y + CONFIG_NET=y + CONFIG_INET=y + CONFIG_DEBUG_FS=y + CONFIG_IPV6=y + CONFIG_BRIDGE=y + CONFIG_VLAN_8021Q=y + CONFIG_WIRELESS=n + CONFIG_NET_9P=y + CONFIG_NETWORK_FILESYSTEMS=y + CONFIG_9P_FS=y + CONFIG_9P_FS_POSIX_ACL=y + CONFIG_9P_FS_SECURITY=y + CONFIG_BLOCK=y + CONFIG_BLK_DEV=y + CONFIG_EXT4_FS=y + CONFIG_EXT4_USE_FOR_EXT23=y + CONFIG_TTY=y + CONFIG_HW_RANDOM=y + CONFIG_VHOST_RING=y + CONFIG_GENERIC_ALLOCATOR=y + CONFIG_SCSI_LOWLEVEL=y + CONFIG_SCSI=y + CONFIG_NETDEVICES=y + CONFIG_NET_CORE=y + CONFIG_DEVTMPFS=y + CONFIG_HYPERVISOR_GUEST=y + CONFIG_PVH=y + CONFIG_PARAVIRT=y + CONFIG_PARAVIRT_TIME_ACCOUNTING=y + CONFIG_PARAVIRT_SPINLOCKS=y + CONFIG_KVM_GUEST=y + CONFIG_BINFMT_ELF=y + CONFIG_BINFMT_SCRIPT=y + CONFIG_BINFMT_MISC=y + CONFIG_PCI=y + CONFIG_SYSVIPC=y + CONFIG_POSIX_MQUEUE=y + CONFIG_CROSS_MEMORY_ATTACH=y + CONFIG_UNIX=y + CONFIG_TMPFS=y + CONFIG_CGROUPS=y + CONFIG_BLK_CGROUP=y + CONFIG_CGROUP_CPUACCT=y + CONFIG_CGROUP_DEVICE=y + CONFIG_CGROUP_FREEZER=y + CONFIG_CGROUP_HUGETLB=y + CONFIG_CGROUP_NET_CLASSID=y + CONFIG_CGROUP_NET_PRIO=y + CONFIG_CGROUP_PERF=y + CONFIG_CGROUP_SCHED=y + CONFIG_DEVPTS_MULTIPLE_INSTANCES=y + CONFIG_INOTIFY_USER=y + CONFIG_FHANDLE=y + CONFIG_CFG80211=y + CONFIG_DUMMY=y + CONFIG_PACKET=y + CONFIG_VETH=y + CONFIG_IP_MULTICAST=y + CONFIG_NET_IPGRE_DEMUX=y + CONFIG_NET_IP_TUNNEL=y + CONFIG_NET_IPGRE=y + CONFIG_NET_IPGRE_BROADCAST=y + # CONFIG_LEGACY_PTYS is not set + CONFIG_NO_HZ_IDLE=y + CONFIG_CPU_IDLE_GOV_HALTPOLL=y + CONFIG_PVPANIC=y + + # makes boot a lot slower but required for shutdown + CONFIG_ACPI=y + + + #debug stuff + CONFIG_CC_STACKPROTECTOR_STRONG=y + CONFIG_LOCKUP_DETECTOR=y + CONFIG_DETECT_HUNG_TASK=y + CONFIG_SCHED_STACK_END_CHECK=y + CONFIG_DEBUG_RT_MUTEXES=y + CONFIG_DEBUG_SPINLOCK=y + CONFIG_DEBUG_MUTEXES=y + CONFIG_PROVE_LOCKING=y + CONFIG_LOCK_STAT=y + CONFIG_DEBUG_LOCKDEP=y + CONFIG_DEBUG_ATOMIC_SLEEP=y + CONFIG_DEBUG_LIST=y + CONFIG_DEBUG_PI_LIST=y + CONFIG_DEBUG_SG=y + CONFIG_DEBUG_NOTIFIERS=y + CONFIG_PROVE_RCU_REPEATEDLY=y + CONFIG_SPARSE_RCU_POINTER=y + CONFIG_DEBUG_STRICT_USER_COPY_CHECKS=y + CONFIG_X86_VERBOSE_BOOTUP=y + CONFIG_DEBUG_RODATA=y + CONFIG_DEBUG_RODATA_TEST=n + CONFIG_DEBUG_SET_MODULE_RONX=y + CONFIG_PAGE_EXTENSION=y + CONFIG_DEBUG_PAGEALLOC=y + CONFIG_DEBUG_OBJECTS=y + CONFIG_DEBUG_OBJECTS_FREE=y + CONFIG_DEBUG_OBJECTS_TIMERS=y + CONFIG_DEBUG_OBJECTS_WORK=y + CONFIG_DEBUG_OBJECTS_RCU_HEAD=y + CONFIG_DEBUG_OBJECTS_PERCPU_COUNTER=y + CONFIG_DEBUG_KMEMLEAK=y + CONFIG_DEBUG_KMEMLEAK_EARLY_LOG_SIZE=8000 + CONFIG_DEBUG_STACK_USAGE=y + CONFIG_DEBUG_STACKOVERFLOW=y + CONFIG_DEBUG_INFO=y + CONFIG_DEBUG_INFO_DWARF4=y + CONFIG_GDB_SCRIPTS=y + CONFIG_READABLE_ASM=y + CONFIG_STACK_VALIDATION=y + CONFIG_WQ_WATCHDOG=y + CONFIG_DEBUG_KOBJECT_RELEASE=y + CONFIG_DEBUG_WQ_FORCE_RR_CPU=y + CONFIG_OPTIMIZE_INLINING=y + CONFIG_ENABLE_MUST_CHECK=y + CONFIG_ENABLE_WARN_DEPRECATED=y + CONFIG_DEBUG_SECTION_MISMATCH=y + CONFIG_UNWINDER_ORC=y + CONFIG_FTRACE=y + CONFIG_FUNCTION_TRACER=y + CONFIG_FUNCTION_GRAPH_TRACER=y + CONFIG_FTRACE_SYSCALLS=y + CONFIG_TRACER_SNAPSHOT=y + CONFIG_TRACER_SNAPSHOT_PER_CPU_SWAP=y + CONFIG_STACK_TRACER=y + CONFIG_UPROBE_EVENTS=y + CONFIG_DYNAMIC_FTRACE=y + CONFIG_FUNCTION_PROFILER=y + CONFIG_HIST_TRIGGERS=y + + # for GCC 5+ + CONFIG_KASAN=y + CONFIG_KASAN_INLINE=y + 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$(nproc || echo 1) + +Build the BIOS +-------------- + +The (sea)bios used by qemu is nice to boot all kind of legacy images but +reduces the performance for booting a paravirtualized Linux system. +Something like qboot works better for this purpose: + +.. code-block:: sh + + git clone https://github.com/bonzini/qboot.git + make -C qboot + +.. _open-mesh-kernel-hacking-debian-image-building-the-batman-adv-module: + +Building the batman-adv module +------------------------------ + +The kernel module can be build outside the virtual environment and +shared over the 9p mount. The path to the kernel sources have to be +provided to the make process + +.. code-block:: sh + + make KERNELPATH="$(pwd)/../linux-next" + +The kernel module can also be compiled in a way which creates better +stack traces and increases the usability with (k)gdb: + +.. code-block:: sh + + make EXTRA_CFLAGS="-fno-inline -Og -fno-optimize-sibling-calls" KERNELPATH="$(pwd)/../linux-next" V=1 + +Start of the environment +------------------------ + +virtual network initialization +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +The +:ref:`virtual-network.sh from the OpenWrt environment <open-mesh-openwrt-in-qemu-virtual-network-initialization>` +can be reused again. + +VM instances bringup +~~~~~~~~~~~~~~~~~~~~ + +The +:ref:`run.sh from the OpenWrt environment <open-mesh-openwrt-in-qemu-vm-instances-bringup>` +can mostly be reused. There are only minimal +adjustments required. + +The BASE_IMG is of course no longer the same because a new image +“debian.img” was created for our new environment. The image also doesn’t +contain a bootloader or kernel anymore. The kernel must now be supplied +manually to qemu. + +.. code-block:: sh + + BASE_IMG=debian.img + BOOTARGS+=("-bios" "qboot/bios.bin") + BOOTARGS+=("-kernel" "linux-next/arch/x86/boot/bzImage") + BOOTARGS+=("-append" "root=/dev/vda 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") + BOOTARGS+=("-device" "virtconsole,chardev=charconsole0,id=console0") + +It is also recommended to use linux-next/vmlinux instead of bzImage with +qemu 4.0.0 (or later) + +Automatic test initialization +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +The +:ref:`test-init.sh from the OpenWrt environment <open-mesh-openwrt-in-qemu-automatic-test-initialization>` +is always test specific. But its main +functionality is still the same as before. A simple example would be: + +.. code-block:: sh + + cat > test-init.sh << "EOF" + #! /bin/sh + + set -e + + ## get internet access + dhclient enp0s2 + + ## Simple batman-adv setup + + # ip link add dummy0 type dummy + ip link set up dummy0 + + rmmod batman-adv || true + insmod /host/batman-adv/net/batman-adv/batman-adv.ko + /host/batctl/batctl routing_algo BATMAN_IV + /host/batctl/batctl if add dummy0 + /host/batctl/batctl it 5000 + /host/batctl/batctl if add enp0s1 + ip link set up dev enp0s1 + ip link set up dev bat0 + EOF + + chmod +x test-init.sh + +Start +----- + +The startup method +:ref:`from the OpenWrt environment <open-mesh-openwrt-in-qemu-start>` +should be used here.

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[doc] backup-redmine/2020-02-08, master: doc: open-mesh/Kernel_hacking_Debian_image: create sparse file from image (a6a1d67)

by postmaster＠open-mesh.org

Repository : ssh://git@open-mesh.org/doc On branches: backup-redmine/2020-02-08,master >--------------------------------------------------------------- commit a6a1d67bc87d23524edd58e553029c4652f0467b Author: Sven Eckelmann <sven(a)narfation.org> Date: Fri Feb 7 23:29:02 2020 +0000 doc: open-mesh/Kernel_hacking_Debian_image: create sparse file from image >--------------------------------------------------------------- a6a1d67bc87d23524edd58e553029c4652f0467b open-mesh/Kernel_hacking_Debian_image.textile | 1 + 1 file changed, 1 insertion(+) diff --git a/open-mesh/Kernel_hacking_Debian_image.textile b/open-mesh/Kernel_hacking_Debian_image.textile index 076de3f..135afbb 100644 --- a/open-mesh/Kernel_hacking_Debian_image.textile +++ b/open-mesh/Kernel_hacking_Debian_image.textile @@ -73,6 +73,7 @@ sudo rm debian/var/lib/apt/lists/* sudo e4defrag -v debian/ sudo umount debian sudo zerofree -v debian.img +sudo fallocate --dig-holes debian.img ## optionally: convert image to qcow2

11 months, 2 weeks

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[doc] backup-redmine/2020-02-08, master: doc: batman-adv/SubmittingLinux: replace davem-only reference with the new netdev group (f2d2c8f)

by postmaster＠open-mesh.org

Repository : ssh://git@open-mesh.org/doc On branches: backup-redmine/2020-02-08,master >--------------------------------------------------------------- commit f2d2c8fce6dfa012a991778a23de52d1aa1c403c Author: Sven Eckelmann <sven(a)narfation.org> Date: Sun Feb 2 14:05:42 2020 +0000 doc: batman-adv/SubmittingLinux: replace davem-only reference with the new netdev group >--------------------------------------------------------------- f2d2c8fce6dfa012a991778a23de52d1aa1c403c batman-adv/SubmittingLinux.textile | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/batman-adv/SubmittingLinux.textile b/batman-adv/SubmittingLinux.textile index 6e243da..2c0c844 100644 --- a/batman-adv/SubmittingLinux.textile +++ b/batman-adv/SubmittingLinux.textile @@ -3,7 +3,7 @@ h1. Submitting Patches to Linux -We currently submit patches for Linux from our next branch. I try to give a short overview about it using some patches submitted to DaveM. +We currently submit patches for Linux from our next branch. I try to give a short overview about it using some patches submitted to DaveM/Kuba. Following steps must always be done: @@ -362,7 +362,7 @@ A good commit in has to be chosen. We should not send more than 20 patches for n Lets assume a good commit is 4e3e823b5a503235630921287f130e1d8d22d200 <pre> -TAG=batadv-next-for-davem-20160701 +TAG=batadv-next-for-netdev-20160701 git tag -s ${TAG} 4e3e823b5a503235630921287f130e1d8d22d200 # write a good commit message git push origin ${TAG} @@ -371,23 +371,23 @@ git push origin ${TAG} The patches then have to be prepared and the cover letter has to be created for the pull request. For net-next it would look like: <pre> -TAG=batadv-next-for-davem-20160701 +TAG=batadv-next-for-netdev-20160701 git format-patch --cover-letter base/net-next..${TAG} sed -i '/\*\*\* BLURB HERE \*\*\*/q' 0000-cover-letter.patch git request-pull base/net-next git://git.open-mesh.org/linux-merge.git ${TAG} >> 0000-cover-letter.patch # write cover letter -git send-email --to=davem(a)davemloft.net --cc=netdev(a)vger.kernel.org --cc=b.a.t.m.a.n(a)lists.open-mesh.org 00*.patch +git send-email --to=davem(a)davemloft.net --to=kuba(a)kernel.org --cc=netdev(a)vger.kernel.org --cc=b.a.t.m.a.n(a)lists.open-mesh.org 00*.patch </pre> or for net: <pre> -TAG=batadv-net-for-davem-20160701 +TAG=batadv-net-for-netdev-20160701 git format-patch --cover-letter base/net..${TAG} sed -i '/\*\*\* BLURB HERE \*\*\*/q' 0000-cover-letter.patch git request-pull base/net git://git.open-mesh.org/linux-merge.git ${TAG} >> 0000-cover-letter.patch # write cover letter -git send-email --to=davem(a)davemloft.net --cc=netdev(a)vger.kernel.org --cc=b.a.t.m.a.n(a)lists.open-mesh.org 00*.patch +git send-email --to=davem(a)davemloft.net --to=kuba(a)kernel.org --cc=netdev(a)vger.kernel.org --cc=b.a.t.m.a.n(a)lists.open-mesh.org 00*.patch </pre> Now I will write something like @@ -412,7 +412,7 @@ The following changes since commit 99860208bc62d8ebd5c57495b84856506fe075bc: are available in the git repository at: - git://git.open-mesh.org/linux-merge.git tags/batadv-next-for-davem-20160701 + git://git.open-mesh.org/linux-merge.git tags/batadv-next-for-netdev-20160701 for you to fetch changes up to 4e3e823b5a503235630921287f130e1d8d22d200:

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[doc] backup-redmine/2020-02-08, master: doc: batman-adv/SubmittingLinux (98dc45e)

by postmaster＠open-mesh.org

Repository : ssh://git@open-mesh.org/doc On branches: backup-redmine/2020-02-08,master >--------------------------------------------------------------- commit 98dc45e9f0934a83d3e046bd7ff755a64c7c0ef7 Author: Sven Eckelmann <sven(a)narfation.org> Date: Sun Feb 2 13:58:42 2020 +0000 doc: batman-adv/SubmittingLinux >--------------------------------------------------------------- 98dc45e9f0934a83d3e046bd7ff755a64c7c0ef7 batman-adv/SubmittingLinux.textile | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/batman-adv/SubmittingLinux.textile b/batman-adv/SubmittingLinux.textile index 0327149..6e243da 100644 --- a/batman-adv/SubmittingLinux.textile +++ b/batman-adv/SubmittingLinux.textile @@ -60,8 +60,8 @@ First step is to actually get the repositories and create the branches. You may <pre> git clone "${GIT_OM_SERVER}/linux-merge.git" linux-merge -git -C linux-merge remote add net-next git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git -git -C linux-merge remote add net git://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git +git -C linux-merge remote add net-next git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git +git -C linux-merge remote add net git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git git -C linux-merge remote update --prune git -C linux-merge branch base/net --track origin/base/net git -C linux-merge branch base/net-next --track origin/base/net-next

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commits February 2020