[etherlab-users] Problem at unplug and reconnection of network cable with Etherlab master patchset 20190904

[BUSSIERES Vincent]

Dear Etherlab users,

I am developing a software using Etherlab master patchset 20190904 for recent kernels.
My environment is Linux Debian 9.5 with 4.9.0-8-amd64 kernel. I am using a add-in network card, Kernel driver in use is ec_e100e.
I connect only one slave to the master.

I noticed strange behaviours when I unplug and reconnect network cable. First times everythings is OK, I can see state link jump from up to down and down to up, communication resumes.
But sometimes my software doesn't respond neither ethercat tools. Communication is break down, command etherlab master doesn't work too.
I must reboot computer to make it works again.

As advised in the patch documentation, I add a rule with the following content : ACTION=="add",KERNEL=="mei0",ATTR{../../power/control}="on" but that didn't solve the problem.

I didn't notice something wrong in dmesg log below.

[  171.720209] EtherCAT DEBUG: 0C D1 00 00 00 00 1D 00 00 00 00 00 00 00 00 00
[  171.720214] EtherCAT DEBUG: 00 00 00 00 00 00 0F 00 00 00 00 00 00 00 00 00
[  171.720218] EtherCAT DEBUG: 00 08 00 38 C0 37 06 00 00 00 00 00
[  171.721186] EtherCAT DEBUG 0: Datagram ffff8cb3d35a93d8 already queued (skipping).
[  171.721187] EtherCAT DEBUG 0: ec_master_send_datagrams(device_index = 0)
[  171.721187] EtherCAT DEBUG 0: Adding datagram 0xD2
[  171.721188] EtherCAT DEBUG 0: frame size: 46
[  171.721188] EtherCAT DEBUG 0: Sending frame:
[  171.721188] EtherCAT DEBUG: FF FF FF FF FF FF 68 05 CA 8B CE EB 88 A4 29 10
[  171.721192] EtherCAT DEBUG: 0C D2 00 00 00 00 1D 00 00 00 00 00 00 00 00 00
[  171.721196] EtherCAT DEBUG: 00 00 00 00 00 00 0F 00 00 00 00 00 00 00 00 00
[  171.721200] EtherCAT DEBUG: 00 08 00 38 C0 37 06 00 00 00 00 00
[  171.722184] EtherCAT DEBUG 0: Datagram ffff8cb3d35a93d8 already queued (skipping).
[  171.722185] EtherCAT DEBUG 0: ec_master_send_datagrams(device_index = 0)
[  171.722185] EtherCAT DEBUG 0: Adding datagram 0xD3
[  171.722186] EtherCAT DEBUG 0: frame size: 46
[  171.722186] EtherCAT DEBUG 0: Sending frame:
[  171.722186] EtherCAT DEBUG: FF FF FF FF FF FF 68 05 CA 8B CE EB 88 A4 29 10
[  171.722190] EtherCAT DEBUG: 0C D3 00 00 00 00 1D 00 00 00 00 00 00 00 00 00
[  171.722194] EtherCAT DEBUG: 00 00 00 00 00 00 0F 00 00 00 00 00 00 00 00 00
[  171.722198] EtherCAT DEBUG: 00 08 00 38 C0 37 06 00 00 00 00 00
[  171.723188] EtherCAT DEBUG 0: Datagram ffff8cb3d35a93d8 already queued (skipping).
[  171.723189] EtherCAT DEBUG 0: ec_master_send_datagrams(device_index = 0)
[  171.723189] EtherCAT DEBUG 0: Adding datagram 0xD4
[  171.723190] EtherCAT DEBUG 0: frame size: 46
[  171.723190] EtherCAT DEBUG 0: Sending frame:
[  171.723190] EtherCAT DEBUG: FF FF FF FF FF FF 68 05 CA 8B CE EB 88 A4 29 10
[  171.723194] EtherCAT DEBUG: 0C D4 00 00 00 00 1D 00 00 00 00 00 00 00 00 00
[  171.723198] EtherCAT DEBUG: 00 00 00 00 00 00 0F 00 00 00 00 00 00 00 00 00
[  171.723202] EtherCAT DEBUG: 00 08 00 38 C0 37 06 00 00 00 00 00
[  171.723898] EtherCAT 0: 0 slave(s) responding on main device.
[  171.723899] EtherCAT 0: Stopping EoE thread.

Does anybody has got an idea ? Thanks a lot.

Best regards

Vincent BUSSIERES
Responsable Technique Logiciel

[1572337113342]
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36, Impasse Félix Nadar
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