Hello Mirza, As promised. Here is what I, after some lengthily investigation, found using Beaglebone Black and Vbox Virtual machine, which passes through host (my host is pass-through VT-d capable).
VBox VM and BBB HW are connected via private IP network, NOT influencing host PC at all. I created two vcan0 interfaces on both ends, and using user space app Cannelloni: https://github.com/mguentner/cannelloni as binding application, I use CAN tunneling via ETH phys. I, actually use socketCAN-Fd framework from the Linux 4.17.2 LTS kernel, playing with user space can-utils app. Here is the condensed Beaglebone Black local.conf for such kind of setup: CONF_VERSION = "1" PATCHRESOLVE = "noop" SSTATE_DIR ?= "${TOPDIR}/sstate-cache" DL_DIR ?= "${TOPDIR}/downloads" TMPDIR ?= "${TOPDIR}/tmp" PACKAGE_CLASSES ?= "package_rpm package_deb" BBMASK = "meta-bbb/recipes-mender" EXTRA_IMAGE_FEATURES = "debug-tweaks" CORE_IMAGE_EXTRA_INSTALL_append = "openssh cmake canutils libsocketcan nfs-utils rt-tests strace procps packagegroup-core-buildessential " DISTRO_FEATURES_append = " ram" IMAGE_FSTYPES_append = " cpio.xz" MACHINE ??= "beaglebone" DISTRO ??= "poky" BBMULTICONFIG ?= "" And, the setup (on both sides) is shown here: https://stackoverflow.com/questions/36568167/can-fd-support-for-virtual-can-vcan-on-socketcan/51376306#51376306 (signed as _nobody_, aka me). _______ It works as a charm. Here is what I did, following your advice. Please, do note that command are generic, and that there is a environment preparation I do NOT want to go into! To set socketCAN framework beneath Linux kernel (I am using 4.17.2), please, as root: lsmod | grep can modprobe can modprobe can_raw modprobe can-bcm modprobe can-dev modprobe can-gw modprobe vcan lsmod | grep can To set the socketCAN-Fd framework, the following should be done (also as root): ip link add dev vcan0 type vcan ip link set vcan0 mtu 72 ip link set dev vcan0 up ifconfig The can-utils package is required to test the socketCAN-Fd framework. Also, the following is required: https://github.com/mguentner/cannelloni And, everything works like a Swatch! ;-) On the xmit side: cangen -f vcan0 -v vcan0 2C3##0.25.5A.FF.1E.DC.BD.CB.42.25.5A.FF.1E.DC.BD.CB.42.25.5A.FF.1E.DC. BD.CB.42.25.5A.FF.1E.DC.BD.CB.42.25.5A.FF.1E.DC.BD.CB.42.25.5A.FF.1E. DC.BD.CB.42.25.5A.FF.1E.DC.BD.CB.42.25.5A.FF.1E.DC.BD.CB.42 On the receiving side: candump vcan0 vcan0 2C3 [64] 25 5A FF 1E DC BD CB 42 25 5A FF 1E DC BD CB 42 25 5A FF 1E DC BD CB 42 25 5A FF 1E DC BD CB 42 25 5A FF 1E DC BD CB 42 25 5A FF 1E DC BD CB 42 25 5A FF 1E DC BD CB 42 25 5A FF 1E DC BD CB 42 _______ True socketCAN-Fd framework. :-) Zoran Stojsavljevic _______ On Tue, Jun 12, 2018 at 11:12 AM, Mirza Krak <mirza.k...@gmail.com> wrote: > On 6 June 2018 at 11:35, Zoran Stojsavljevic > <zoran.stojsavlje...@gmail.com> wrote: >> Hello to YOCTO community, >> >> I am looking into the new CAN FD (CAN Flexible Data rate) protocol. It >> is very similar to classical CAN. >> >> I am wondering the following (I'll ask very basic questions, just to >> see if I am on the right tracks): >> [1] Do YOCTO kernels have CAN drivers left as mandatory drivers in the >> drivers/ tree (CAN drivers exist on kernel.org kernels)? >> [2] If YES, are these drivers enabled by default, or I need to enable >> them? Anybody to quickly refresh me how to manipulate make menuconfig >> in YOCTO tree? > > SocketCAN is very hardware specific and you do not mention which > hardware you are using. > >> >> I also need the feature called: SocketCAN. The following questions arise: >> [3] Do we have in the socket I/Fs added PF_CAN protocol family handling? >> https://en.wikipedia.org/wiki/SocketCAN >> [4] Does added SocketCAN layer exist, which covers this topic? It'll >> be layer on the top of the YOCTO-BSP layer, my best guess. Any >> examples, using such a layer? Or any Open Source example(s) of such a >> layer? > > I am not aware of any layers and I do not believe that there is any. > SocketCAN is a Linux kernel feature and there are a set of utils to > use SocketCAN [1] and there seems to be a recipe for can-utils in > meta-oe [2] which should be enough to get you started. > > [1]. https://github.com/linux-can/can-utils > [2]. http://layers.openembedded.org/layerindex/recipe/24252/ > > -- > Med Vänliga Hälsningar / Best Regards > > Mirza Krak -- _______________________________________________ yocto mailing list yocto@yoctoproject.org https://lists.yoctoproject.org/listinfo/yocto
