Python script to loop over the journal and reset the onboard Intel I225-V (rev 03) when it barfs with "igc: Failed to read reg 0xc030!"

i225_reset.py

#!/usr/bin/env python3

import pyudev
import re
from systemd import journal

def get_pci_id():
    context = pyudev.Context()
    pci_pattern = re.compile(r'^[0-9a-f]{4}:[0-9a-f]{2}:[0-9a-f]{2}\.[0-9].*Ethernet controller: Intel Corporation.*I225-V.*rev 03$', re.IGNORECASE)
    
    for device in context.list_devices(subsystem='pci'):
        if 'ID_MODEL_FROM_DATABASE' in device:
            device_info = f"{device.sys_name} {device['ID_MODEL_FROM_DATABASE']}"
            if pci_pattern.search(device_info):
                return device.sys_name
    return None

def remove_and_rescan_pci_device(pci_id):
    remove_path = f"/sys/bus/pci/devices/{pci_id}/remove"
    rescan_path = f"/sys/bus/pci/rescan"

    with open(remove_path, 'w') as f:
        f.write('1')

    with open(rescan_path, 'w') as f:
        f.write('1')

def monitor_journal():
    j = journal.Reader()
    j.this_boot()
    j.log_level(journal.LOG_INFO)
    j.add_match(_SYSTEMD_UNIT="network.target")

    pci_id = None

    while True:
        j.seek_tail()
        j.get_previous()
        for entry in j:
            message = entry['MESSAGE']
            if 'igc: Failed to read reg 0xc030!' in message:
                if pci_id is None:
                    pci_id = get_pci_id()
                if pci_id:
                    remove_and_rescan_pci_device(pci_id)
        j.wait(1000000)

if __name__ == '__main__':
    monitor_journal()