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-rwxr-xr-xsrc/conf_mode/interfaces-wwan.py53
1 files changed, 52 insertions, 1 deletions
diff --git a/src/conf_mode/interfaces-wwan.py b/src/conf_mode/interfaces-wwan.py
index faa5eb628..a4b033374 100755
--- a/src/conf_mode/interfaces-wwan.py
+++ b/src/conf_mode/interfaces-wwan.py
@@ -17,6 +17,7 @@
import os
from sys import exit
+from time import sleep
from vyos.config import Config
from vyos.configdict import get_interface_dict
@@ -25,11 +26,18 @@ from vyos.configverify import verify_interface_exists
from vyos.configverify import verify_vrf
from vyos.ifconfig import WWANIf
from vyos.util import cmd
+from vyos.util import call
from vyos.util import dict_search
+from vyos.util import DEVNULL
+from vyos.util import is_systemd_service_active
+from vyos.util import write_file
from vyos import ConfigError
from vyos import airbag
airbag.enable()
+service_name = 'ModemManager.service'
+cron_script = '/etc/cron.d/wwan'
+
def get_config(config=None):
"""
Retrive CLI config as dictionary. Dictionary can never be empty, as at least the
@@ -42,6 +50,20 @@ def get_config(config=None):
base = ['interfaces', 'wwan']
wwan = get_interface_dict(conf, base)
+ # We need to know the amount of other WWAN interfaces as ModemManager needs
+ # to be started or stopped.
+ conf.set_level(base)
+ wwan['other_interfaces'] = conf.get_config_dict([], key_mangling=('-', '_'),
+ get_first_key=True,
+ no_tag_node_value_mangle=True)
+
+ # This if-clause is just to be sure - it will always evaluate to true
+ ifname = wwan['ifname']
+ if ifname in wwan['other_interfaces']:
+ del wwan['other_interfaces'][ifname]
+ if len(wwan['other_interfaces']) == 0:
+ del wwan['other_interfaces']
+
return wwan
def verify(wwan):
@@ -59,9 +81,26 @@ def verify(wwan):
return None
def generate(wwan):
+ if 'deleted' in wwan:
+ return None
+
+ if not os.path.exists(cron_script):
+ write_file(cron_script, '*/5 * * * * root /usr/libexec/vyos/vyos-check-wwan.py')
return None
def apply(wwan):
+ if not is_systemd_service_active(service_name):
+ cmd(f'systemctl start {service_name}')
+
+ counter = 100
+ # Wait until a modem is detected and then we can continue
+ while counter > 0:
+ counter -= 1
+ tmp = cmd('mmcli -L')
+ if tmp != 'No modems were found':
+ break
+ sleep(0.250)
+
# we only need the modem number. wwan0 -> 0, wwan1 -> 1
modem = wwan['ifname'].lstrip('wwan')
base_cmd = f'mmcli --modem {modem}'
@@ -71,6 +110,15 @@ def apply(wwan):
w = WWANIf(wwan['ifname'])
if 'deleted' in wwan or 'disable' in wwan:
w.remove()
+
+ # There are no other WWAN interfaces - stop the daemon
+ if 'other_interfaces' not in wwan:
+ cmd(f'systemctl stop {service_name}')
+ # Clean CRON helper script which is used for to re-connect when
+ # RF signal is lost
+ if os.path.exists(cron_script):
+ os.unlink(cron_script)
+
return None
ip_type = 'ipv4'
@@ -88,9 +136,12 @@ def apply(wwan):
options += ',user={user},password={password}'.format(**wwan['authentication'])
command = f'{base_cmd} --simple-connect="{options}"'
- cmd(command)
+ call(command, stdout=DEVNULL)
w.update(wwan)
+ if 'other_interfaces' not in wwan and 'deleted' in wwan:
+ cmd(f'systemctl start {service_name}')
+
return None
if __name__ == '__main__':