Ubuntu 22.04安装IGH

查看设备是否支持

硬件

$ sudo lshw -class network -short
H/W path           Device     Class          Description
========================================================
/0/100/1c/0        enp1s0     network        I211 Gigabit Network Connection
/0/100/1c.1/0      enp2s0     network        RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
/0/100/1c.2/0      enp3s0     network        RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller

查看RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller使用的驱动

端口enp2s0连接的EtherCAT设备

$ ethtool -i enp2s0 | grep driver
driver: r8169

系统

实时内核

$ uname -a
Linux demo-O-E-M 5.15.0-1053-realtime #59-Ubuntu SMP PREEMPT_RT Fri Jan 12 20:29:00 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux

测试实时性

$ sudo cyclictest -t 5 -p 99
# /dev/cpu_dma_latency set to 0us
policy: fifo: loadavg: 3.68 2.48 1.44 1/802 2688596T: 0 (2687390) P:99 I:1000 C: 170479 Min:      3 Act:    4 Avg:    4 Max:      73
T: 1 (2687391) P:99 I:1500 C: 113653 Min:      3 Act:    4 Avg:    4 Max:      24
T: 2 (2687392) P:99 I:2000 C:  85239 Min:      3 Act:    4 Avg:    4 Max:      24
T: 3 (2687393) P:99 I:2500 C:  68191 Min:      4 Act:    4 Avg:    4 Max:      40
T: 4 (2687394) P:99 I:3000 C:  56826 Min:      4 Act:    4 Avg:    4 Max:      23

安装IGH主站

下载源码

$ git clone https://gitlab.com/etherlab.org/ethercat.git
$ cd ethercat
$ ./bootstrap
$ ./configure --enable-generic --enable-8139too=no --enable-r8169=yes
$ make
$ make modules
$ sudo make install
$ sudo make modules_install
$ sudo depmod

安装

# modprobe ec_generic ec_master
# lsmod | grep ec_
ec_generic             16384  0
ec_master             348160  1 ec_generic

配置

$ vim /usr/local/etc/ethercat.conf
MASTER0_DEVICE="68:ed:a6:08:b1:77"

测试

# ethercat master
Master0Phase: IdleActive: noSlaves: 1Ethernet devices:Main: 68:ed:a6:08:b1:77 (attached)Link: UPTx frames:   33700Tx bytes:    2099856Rx frames:   33700Rx bytes:    2099856Tx errors:   0Tx frame rate [1/s]:    186    186    184Tx rate [KByte/s]:     10.9   11.2   11.2Rx frame rate [1/s]:    186    186    184Rx rate [KByte/s]:     10.9   11.2   11.2Common:Tx frames:   33700Tx bytes:    2099856Rx frames:   33700Rx bytes:    2099856Lost frames: 0Tx frame rate [1/s]:    186    186    184Tx rate [KByte/s]:     10.9   11.2   11.2Rx frame rate [1/s]:    186    186    184Rx rate [KByte/s]:     10.9   11.2   11.2Loss rate [1/s]:          0      0      0Frame loss [%]:         0.0    0.0    0.0Distributed clocks:Reference clock:   Slave 0DC reference time: 0Application time:  02000-01-01 00:00:00.000000000
# ethercat slave
0  0:0  PREOP  +  SV660_1Axis_00916

TODO

文中使用ec_generic通用驱动，需换为ec_r8169
–>

编辑ethercat配置文件

# vim /usr/local/etc/sysconfig/ethercat
MASTER0_DEVICE="68:ed:a6:08:b1:77"
DEVICE_MODULES="r8169"
# /usr/local/etc/init.d/ethercat restart

问题: 虽然ethercat master也能够正常工作，但是ifconfig却看不到网卡了