Skip to content

Latest commit

 

History

History
66 lines (44 loc) · 2.05 KB

README.md

File metadata and controls

66 lines (44 loc) · 2.05 KB
Raw

linux network drivers

The subdirectory 'linux' contains hacked linux network drivers to directly communicate with the nic instead of using raw socket of the network stack. These drivers are inspired by IGH's EtherCAT master drivers. Contrary to this here we provide an interface to user-level processes.

Build

Change working directory to the linux subdirecty and build the driver for your os/kernel.

  • Build drivers (guess os/kernel):

    make

    or (specify os/kernel dir):

    make KERNEL_SOURCE_DIR=/usr/src/linux-rt

  • Install drivers:

    sudo make modules_install

Blacklist original linux igb driver.

type vim /etc/modprobe.d/blacklist-igb.conf and add following content:

# prevent linux from loading it's own igb network driver
blacklist igb

Attaching network device as EtherCAT interface.

All network devices which should be used as an EtherCAT interface have to be specified explicitly. Therefore you have to pass the MAC-addressses to the kernel module. Type vim /etc/default/grub and change:

GRUB_CMDLINE_LINUX_DEFAULT="resume=/dev/disk/by-partlabel/swap0 showopts splash=silent  intel_iommu=on preempt=full quiet security=apparmor mitigations=auto processor.max_cstate=1 intel_idle.max_cstate=0 nortsched isolcpus=2,3,4,5 nohz_full=2,3,4,5 mitigations=off idle=poll nosmt systemd.unit=default-offline.target"

to

GRUB_CMDLINE_LINUX_DEFAULT="resume=/dev/disk/by-partlabel/swap0 showopts splash=silent igb_ethercat.ethercat_mac_addr=00:1b:21:ed:35:41 intel_iommu=on preempt=full quiet security=apparmor mitigations=auto processor.max_cstate=1 intel_idle.max_cstate=0 nortsched isolcpus=2,3,4,5 nohz_full=2,3,4,5 mitigations=off idle=poll nosmt systemd.unit=default-offline.target"

Rebuild grub config file

Enter

grub2-mkconfig -o /boot/grub2/grub.cfg

Create udev rule for devices

Create /etc/udev/rules.d/991-ecat.rules with following content:

# udev rules for EtherCAT devices:
SUBSYSTEM=="ecat", KERNEL=="ecat?", MODE="0666"