igb io error.

[namdala]

Hello,

when I execte timple_talker command, I got the error message.

• command : $sudo ./simple_talker -i enp3so -t 2

• error msg
  attaching to 0000:03:00.0
  attach failed! (Unknown error -6)
  connet failed (No such file or directory) - are you running as root?

I checked igb.c code in ./lib/igb_avb/lib folder.

problem code is
"adapter->ldev = open("/dev/igb_avb", O_RDWR);"

In the system I built, /dev/igb_avb does not exist, so I changed it to /sys/class/net/enp3s0. However, the return value of ldev is -1.
If you have encountered the same error message, please share how you resolved it.

thanks.

[MarcinMiklas]

Hello,

/dev/igb_avb is provided by igb_avb module see https://github.com/AVnu/igb_avb/

run_igb.sh shows how to load that module properly.

Regards,
Marcin

[namdala]

execute result is as blow.

mmtp@mmtp-B80GV-AP05D6E:~/OpenAvnu$ ./run_igb.sh enp3s0
rmmod: ERROR: ../libkmod/libkmod-module.c:799 kmod_module_remove_module() could not remove 'igb': Operation not permitted
rmmod: ERROR: could not remove module igb: Operation not permitted
insmod: ERROR: could not load module kmod/igb/igb_avb.ko: No such file or directory
driver: igb
version: 6.2.0-39-generic
firmware-version: 3.25, 0x800005cd, 1.924.0
expansion-rom-version:
bus-info: 0000:03:00.0
supports-statistics: yes
supports-test: yes
supports-eeprom-access: yes
supports-register-dump: yes
supports-priv-flags: yes

when I execute command as insmod, I got always error message as "Operation not permitted".
could you help me?

[MarcinMiklas]

Try

sudo ./run_igb.sh enp3s0

Familiarity with linux is required to use OpenAvnu.

[namdala]

It is same.

mmtp@mmtp-B80GV-AP05D6E:/sys/class/net$ ls
eno1 enp3s0 lo
mmtp@mmtp-B80GV-AP05D6E:/sys/class/net$ sudo ~/OpenAvnu/run_igb.sh enp3s0
[sudo] password for mmtp:
insmod: ERROR: could not load module kmod/igb/igb_avb.ko: No such file or directory
Cannot get driver information: No such device
mmtp@mmtp-B80GV-AP05D6E:/sys/class/net$ ls
eno1 lo
mmtp@mmtp-B80GV-AP05D6E:/sys/class/net$

What more can I do?

[anishkhannayellapu124]

Why TC command is used when igb driver exposed with 2 queues in userspace for TSN. how will the TSN effected bt tc when running tx queues from userspace ?