wwan: T1988: add support for Sierra Wireless MC7710 modem

2 files changed, 21 insertions, 1 deletions

diff --git a/src/conf_mode/interfaces-wirelessmodem.py b/src/conf_mode/interfaces-wirelessmodem.py
index 388d98f4e..93f60d038 100755
--- a/src/conf_mode/interfaces-wirelessmodem.py
+++ b/src/conf_mode/interfaces-wirelessmodem.py
@@ -32,6 +32,9 @@ config_wwan_tmpl = """### Autogenerated by interfaces-wirelessmodem.py ###
 # {{ description }}
 {% endif %}
 
+# physical device
+/dev/{{ device }}
+
 ipparam {{ intf }} {{ metric }}
 {% if on_demand -%}
 demand
@@ -53,6 +56,7 @@ crtscts
 lock
 persist
 
+
 """
 
 default_config_data = {
@@ -136,9 +140,14 @@ def get_config():
     return wwan
 
 def verify(wwan):
-    if wwan is None:
+    if wwan['deleted']:
         return None
 
+    # we can not use isfile() here as Linux device files are no regular files
+    # thus the check will return False
+    if not os.path.exists(f"/dev/{wwan['device']}"):
+        raise ConfigError(f"Device {wwan['device']} does not exist")
+
     return None
 
 def generate(wwan):
diff --git a/src/etc/udev/rules.d/99-vyos-wwan.rules b/src/etc/udev/rules.d/99-vyos-wwan.rules
new file mode 100644
index 000000000..67f30a3dd
--- /dev/null
+++ b/src/etc/udev/rules.d/99-vyos-wwan.rules
@@ -0,0 +1,11 @@
+ACTION!="add|change", GOTO="mbim_to_qmi_rules_end"
+
+SUBSYSTEM!="usb", GOTO="mbim_to_qmi_rules_end"
+
+# ignore any device with only one configuration
+ATTR{bNumConfigurations}=="1", GOTO="mbim_to_qmi_rules_end"
+
+# force Sierra Wireless MC7710 to configuration #1
+ATTR{idVendor}=="1199",ATTR{idProduct}=="68a2",ATTR{bConfigurationValue}="1"
+
+LABEL="mbim_to_qmi_rules_end"